Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
3666a048 | 3 | Copyright (C) 1988-2021 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
3b3dac9b | 30 | #include "process-stratum-target.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
268a13a5 TT |
45 | #include "gdbsupport/filestuff.h" |
46 | #include "gdbsupport/rsp-low.h" | |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
268a13a5 | 50 | #include "gdbsupport/gdb_sys_time.h" |
c906108c | 51 | |
400b5eca | 52 | #include "gdbsupport/event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
7e10abd1 | 59 | #include "gdbcore.h" |
6240bebf | 60 | |
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
268a13a5 | 71 | #include "gdbsupport/agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
268a13a5 TT |
75 | #include "gdbsupport/scoped_restore.h" |
76 | #include "gdbsupport/environ.h" | |
77 | #include "gdbsupport/byte-vector.h" | |
4a72de73 | 78 | #include "gdbsupport/search.h" |
39ef2f62 | 79 | #include <algorithm> |
9d6eea31 | 80 | #include <unordered_map> |
93b54c8e | 81 | #include "async-event.h" |
35b1e5cc | 82 | |
f6ac5f3d PA |
83 | /* The remote target. */ |
84 | ||
d9f719f1 PA |
85 | static const char remote_doc[] = N_("\ |
86 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
87 | Specify the serial device it is connected to\n\ | |
88 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
89 | ||
6b8edb51 PA |
90 | #define OPAQUETHREADBYTES 8 |
91 | ||
92 | /* a 64 bit opaque identifier */ | |
93 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
94 | ||
95 | struct gdb_ext_thread_info; | |
96 | struct threads_listing_context; | |
97 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
98 | struct protocol_feature; | |
99 | struct packet_reg; | |
100 | ||
101 | struct stop_reply; | |
32603266 | 102 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
103 | |
104 | /* Generic configuration support for packets the stub optionally | |
105 | supports. Allows the user to specify the use of the packet as well | |
106 | as allowing GDB to auto-detect support in the remote stub. */ | |
107 | ||
108 | enum packet_support | |
109 | { | |
110 | PACKET_SUPPORT_UNKNOWN = 0, | |
111 | PACKET_ENABLE, | |
112 | PACKET_DISABLE | |
113 | }; | |
114 | ||
115 | /* Analyze a packet's return value and update the packet config | |
116 | accordingly. */ | |
117 | ||
118 | enum packet_result | |
119 | { | |
120 | PACKET_ERROR, | |
121 | PACKET_OK, | |
122 | PACKET_UNKNOWN | |
123 | }; | |
124 | ||
125 | struct threads_listing_context; | |
3c69da40 PA |
126 | |
127 | /* Stub vCont actions support. | |
128 | ||
129 | Each field is a boolean flag indicating whether the stub reports | |
130 | support for the corresponding action. */ | |
131 | ||
132 | struct vCont_action_support | |
133 | { | |
134 | /* vCont;t */ | |
135 | bool t = false; | |
136 | ||
137 | /* vCont;r */ | |
138 | bool r = false; | |
139 | ||
140 | /* vCont;s */ | |
141 | bool s = false; | |
142 | ||
143 | /* vCont;S */ | |
144 | bool S = false; | |
145 | }; | |
146 | ||
405feb71 | 147 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
148 | |
149 | #define MAXTHREADLISTRESULTS 32 | |
150 | ||
151 | /* Data for the vFile:pread readahead cache. */ | |
152 | ||
153 | struct readahead_cache | |
154 | { | |
155 | /* Invalidate the readahead cache. */ | |
156 | void invalidate (); | |
157 | ||
158 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
159 | void invalidate_fd (int fd); | |
160 | ||
161 | /* Serve pread from the readahead cache. Returns number of bytes | |
162 | read, or 0 if the request can't be served from the cache. */ | |
163 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
164 | ||
165 | /* The file descriptor for the file that is being cached. -1 if the | |
166 | cache is invalid. */ | |
167 | int fd = -1; | |
168 | ||
169 | /* The offset into the file that the cache buffer corresponds | |
170 | to. */ | |
171 | ULONGEST offset = 0; | |
172 | ||
173 | /* The buffer holding the cache contents. */ | |
174 | gdb_byte *buf = nullptr; | |
175 | /* The buffer's size. We try to read as much as fits into a packet | |
176 | at a time. */ | |
177 | size_t bufsize = 0; | |
178 | ||
179 | /* Cache hit and miss counters. */ | |
180 | ULONGEST hit_count = 0; | |
181 | ULONGEST miss_count = 0; | |
182 | }; | |
183 | ||
184 | /* Description of the remote protocol for a given architecture. */ | |
185 | ||
186 | struct packet_reg | |
187 | { | |
188 | long offset; /* Offset into G packet. */ | |
189 | long regnum; /* GDB's internal register number. */ | |
190 | LONGEST pnum; /* Remote protocol register number. */ | |
191 | int in_g_packet; /* Always part of G packet. */ | |
192 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
193 | at present. */ | |
194 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
195 | at present. */ | |
196 | }; | |
197 | ||
198 | struct remote_arch_state | |
199 | { | |
200 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
201 | ||
202 | /* Description of the remote protocol registers. */ | |
203 | long sizeof_g_packet; | |
204 | ||
205 | /* Description of the remote protocol registers indexed by REGNUM | |
206 | (making an array gdbarch_num_regs in size). */ | |
207 | std::unique_ptr<packet_reg[]> regs; | |
208 | ||
209 | /* This is the size (in chars) of the first response to the ``g'' | |
210 | packet. It is used as a heuristic when determining the maximum | |
211 | size of memory-read and memory-write packets. A target will | |
212 | typically only reserve a buffer large enough to hold the ``g'' | |
213 | packet. The size does not include packet overhead (headers and | |
214 | trailers). */ | |
215 | long actual_register_packet_size; | |
216 | ||
217 | /* This is the maximum size (in chars) of a non read/write packet. | |
218 | It is also used as a cap on the size of read/write packets. */ | |
219 | long remote_packet_size; | |
220 | }; | |
221 | ||
222 | /* Description of the remote protocol state for the currently | |
223 | connected target. This is per-target state, and independent of the | |
224 | selected architecture. */ | |
225 | ||
226 | class remote_state | |
227 | { | |
228 | public: | |
229 | ||
230 | remote_state (); | |
231 | ~remote_state (); | |
232 | ||
233 | /* Get the remote arch state for GDBARCH. */ | |
234 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
235 | ||
236 | public: /* data */ | |
237 | ||
238 | /* A buffer to use for incoming packets, and its current size. The | |
239 | buffer is grown dynamically for larger incoming packets. | |
240 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 241 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
242 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
243 | packets. */ | |
8d64371b | 244 | gdb::char_vector buf; |
3c69da40 PA |
245 | |
246 | /* True if we're going through initial connection setup (finding out | |
247 | about the remote side's threads, relocating symbols, etc.). */ | |
248 | bool starting_up = false; | |
249 | ||
250 | /* If we negotiated packet size explicitly (and thus can bypass | |
251 | heuristics for the largest packet size that will not overflow | |
252 | a buffer in the stub), this will be set to that packet size. | |
253 | Otherwise zero, meaning to use the guessed size. */ | |
254 | long explicit_packet_size = 0; | |
255 | ||
256 | /* remote_wait is normally called when the target is running and | |
257 | waits for a stop reply packet. But sometimes we need to call it | |
258 | when the target is already stopped. We can send a "?" packet | |
259 | and have remote_wait read the response. Or, if we already have | |
260 | the response, we can stash it in BUF and tell remote_wait to | |
261 | skip calling getpkt. This flag is set when BUF contains a | |
262 | stop reply packet and the target is not waiting. */ | |
263 | int cached_wait_status = 0; | |
264 | ||
265 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
266 | expect acks from each other. The connection is assumed to be | |
267 | reliable. */ | |
268 | bool noack_mode = false; | |
269 | ||
270 | /* True if we're connected in extended remote mode. */ | |
271 | bool extended = false; | |
272 | ||
273 | /* True if we resumed the target and we're waiting for the target to | |
274 | stop. In the mean time, we can't start another command/query. | |
275 | The remote server wouldn't be ready to process it, so we'd | |
276 | timeout waiting for a reply that would never come and eventually | |
277 | we'd close the connection. This can happen in asynchronous mode | |
278 | because we allow GDB commands while the target is running. */ | |
279 | bool waiting_for_stop_reply = false; | |
280 | ||
281 | /* The status of the stub support for the various vCont actions. */ | |
282 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
283 | /* Whether vCont support was probed already. This is a workaround |
284 | until packet_support is per-connection. */ | |
285 | bool supports_vCont_probed; | |
3c69da40 PA |
286 | |
287 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
288 | responded to that. */ | |
289 | bool ctrlc_pending_p = false; | |
290 | ||
291 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
292 | remote descriptor. At that point it is not safe to send a remote | |
293 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
294 | process it once we're done with sending/receiving the current | |
295 | packet, which should be shortly. If however that takes too long, | |
296 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
297 | bool got_ctrlc_during_io = false; | |
298 | ||
299 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
300 | remote_open knows that we don't have a file open when the program | |
301 | starts. */ | |
302 | struct serial *remote_desc = nullptr; | |
303 | ||
304 | /* These are the threads which we last sent to the remote system. The | |
305 | TID member will be -1 for all or -2 for not sent yet. */ | |
306 | ptid_t general_thread = null_ptid; | |
307 | ptid_t continue_thread = null_ptid; | |
308 | ||
309 | /* This is the traceframe which we last selected on the remote system. | |
310 | It will be -1 if no traceframe is selected. */ | |
311 | int remote_traceframe_number = -1; | |
312 | ||
313 | char *last_pass_packet = nullptr; | |
314 | ||
315 | /* The last QProgramSignals packet sent to the target. We bypass | |
316 | sending a new program signals list down to the target if the new | |
317 | packet is exactly the same as the last we sent. IOW, we only let | |
318 | the target know about program signals list changes. */ | |
319 | char *last_program_signals_packet = nullptr; | |
320 | ||
321 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
322 | ||
323 | bool last_sent_step = false; | |
324 | ||
325 | /* The execution direction of the last resume we got. */ | |
326 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
327 | ||
328 | char *finished_object = nullptr; | |
329 | char *finished_annex = nullptr; | |
330 | ULONGEST finished_offset = 0; | |
331 | ||
332 | /* Should we try the 'ThreadInfo' query packet? | |
333 | ||
334 | This variable (NOT available to the user: auto-detect only!) | |
335 | determines whether GDB will use the new, simpler "ThreadInfo" | |
336 | query or the older, more complex syntax for thread queries. | |
337 | This is an auto-detect variable (set to true at each connect, | |
338 | and set to false when the target fails to recognize it). */ | |
339 | bool use_threadinfo_query = false; | |
340 | bool use_threadextra_query = false; | |
341 | ||
342 | threadref echo_nextthread {}; | |
343 | threadref nextthread {}; | |
344 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
345 | ||
346 | /* The state of remote notification. */ | |
347 | struct remote_notif_state *notif_state = nullptr; | |
348 | ||
349 | /* The branch trace configuration. */ | |
350 | struct btrace_config btrace_config {}; | |
351 | ||
352 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
353 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
354 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
355 | has yet been sent. */ | |
356 | int fs_pid = -1; | |
357 | ||
358 | /* A readahead cache for vFile:pread. Often, reading a binary | |
359 | involves a sequence of small reads. E.g., when parsing an ELF | |
360 | file. A readahead cache helps mostly the case of remote | |
361 | debugging on a connection with higher latency, due to the | |
362 | request/reply nature of the RSP. We only cache data for a single | |
363 | file descriptor at a time. */ | |
364 | struct readahead_cache readahead_cache; | |
365 | ||
366 | /* The list of already fetched and acknowledged stop events. This | |
367 | queue is used for notification Stop, and other notifications | |
368 | don't need queue for their events, because the notification | |
369 | events of Stop can't be consumed immediately, so that events | |
370 | should be queued first, and be consumed by remote_wait_{ns,as} | |
371 | one per time. Other notifications can consume their events | |
372 | immediately, so queue is not needed for them. */ | |
953edf2b | 373 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
374 | |
375 | /* Asynchronous signal handle registered as event loop source for | |
376 | when we have pending events ready to be passed to the core. */ | |
377 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
378 | ||
379 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
380 | ``forever'' still use the normal timeout mechanism. This is | |
381 | currently used by the ASYNC code to guarentee that target reads | |
382 | during the initial connect always time-out. Once getpkt has been | |
383 | modified to return a timeout indication and, in turn | |
384 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
385 | this can go away. */ | |
386 | int wait_forever_enabled_p = 1; | |
387 | ||
388 | private: | |
389 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
390 | is only one entry here, though we may see more with stubs that | |
391 | support multi-process. */ | |
392 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
393 | m_arch_states; | |
394 | }; | |
6b8edb51 | 395 | |
d9f719f1 PA |
396 | static const target_info remote_target_info = { |
397 | "remote", | |
398 | N_("Remote serial target in gdb-specific protocol"), | |
399 | remote_doc | |
400 | }; | |
401 | ||
3b3dac9b | 402 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
403 | { |
404 | public: | |
3b3dac9b | 405 | remote_target () = default; |
6b8edb51 | 406 | ~remote_target () override; |
f6ac5f3d | 407 | |
d9f719f1 PA |
408 | const target_info &info () const override |
409 | { return remote_target_info; } | |
f6ac5f3d | 410 | |
121b3efd PA |
411 | const char *connection_string () override; |
412 | ||
f6ac5f3d PA |
413 | thread_control_capabilities get_thread_control_capabilities () override |
414 | { return tc_schedlock; } | |
415 | ||
d9f719f1 PA |
416 | /* Open a remote connection. */ |
417 | static void open (const char *, int); | |
418 | ||
f6ac5f3d PA |
419 | void close () override; |
420 | ||
421 | void detach (inferior *, int) override; | |
422 | void disconnect (const char *, int) override; | |
423 | ||
424 | void commit_resume () override; | |
425 | void resume (ptid_t, int, enum gdb_signal) override; | |
b60cea74 | 426 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
f6ac5f3d PA |
427 | |
428 | void fetch_registers (struct regcache *, int) override; | |
429 | void store_registers (struct regcache *, int) override; | |
430 | void prepare_to_store (struct regcache *) override; | |
431 | ||
432 | void files_info () override; | |
433 | ||
434 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
435 | ||
436 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
437 | enum remove_bp_reason) override; | |
438 | ||
439 | ||
57810aa7 PA |
440 | bool stopped_by_sw_breakpoint () override; |
441 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 442 | |
57810aa7 | 443 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 444 | |
57810aa7 | 445 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 446 | |
57810aa7 | 447 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 448 | |
57810aa7 | 449 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 450 | |
57810aa7 | 451 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
452 | |
453 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
454 | ||
455 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
456 | ||
457 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
458 | ||
459 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
460 | ||
461 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
462 | struct expression *) override; | |
463 | ||
464 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
465 | struct expression *) override; | |
466 | ||
467 | void kill () override; | |
468 | ||
469 | void load (const char *, int) override; | |
470 | ||
471 | void mourn_inferior () override; | |
472 | ||
adc6a863 | 473 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
474 | |
475 | int set_syscall_catchpoint (int, bool, int, | |
476 | gdb::array_view<const int>) override; | |
477 | ||
adc6a863 | 478 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 479 | |
57810aa7 | 480 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
481 | |
482 | const char *thread_name (struct thread_info *) override; | |
483 | ||
484 | void update_thread_list () override; | |
485 | ||
a068643d | 486 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
487 | |
488 | const char *extra_thread_info (struct thread_info *) override; | |
489 | ||
490 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
491 | ||
492 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
493 | int handle_len, | |
494 | inferior *inf) override; | |
495 | ||
3d6c6204 KB |
496 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
497 | override; | |
498 | ||
f6ac5f3d PA |
499 | void stop (ptid_t) override; |
500 | ||
501 | void interrupt () override; | |
502 | ||
503 | void pass_ctrlc () override; | |
504 | ||
505 | enum target_xfer_status xfer_partial (enum target_object object, | |
506 | const char *annex, | |
507 | gdb_byte *readbuf, | |
508 | const gdb_byte *writebuf, | |
509 | ULONGEST offset, ULONGEST len, | |
510 | ULONGEST *xfered_len) override; | |
511 | ||
512 | ULONGEST get_memory_xfer_limit () override; | |
513 | ||
514 | void rcmd (const char *command, struct ui_file *output) override; | |
515 | ||
516 | char *pid_to_exec_file (int pid) override; | |
517 | ||
518 | void log_command (const char *cmd) override | |
519 | { | |
520 | serial_log_command (this, cmd); | |
521 | } | |
522 | ||
523 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
524 | CORE_ADDR load_module_addr, | |
525 | CORE_ADDR offset) override; | |
526 | ||
57810aa7 | 527 | bool can_execute_reverse () override; |
f6ac5f3d PA |
528 | |
529 | std::vector<mem_region> memory_map () override; | |
530 | ||
531 | void flash_erase (ULONGEST address, LONGEST length) override; | |
532 | ||
533 | void flash_done () override; | |
534 | ||
535 | const struct target_desc *read_description () override; | |
536 | ||
537 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
538 | const gdb_byte *pattern, ULONGEST pattern_len, | |
539 | CORE_ADDR *found_addrp) override; | |
540 | ||
57810aa7 | 541 | bool can_async_p () override; |
f6ac5f3d | 542 | |
57810aa7 | 543 | bool is_async_p () override; |
f6ac5f3d PA |
544 | |
545 | void async (int) override; | |
546 | ||
5b6d1e4f PA |
547 | int async_wait_fd () override; |
548 | ||
f6ac5f3d PA |
549 | void thread_events (int) override; |
550 | ||
551 | int can_do_single_step () override; | |
552 | ||
553 | void terminal_inferior () override; | |
554 | ||
555 | void terminal_ours () override; | |
556 | ||
57810aa7 | 557 | bool supports_non_stop () override; |
f6ac5f3d | 558 | |
57810aa7 | 559 | bool supports_multi_process () override; |
f6ac5f3d | 560 | |
57810aa7 | 561 | bool supports_disable_randomization () override; |
f6ac5f3d | 562 | |
57810aa7 | 563 | bool filesystem_is_local () override; |
f6ac5f3d PA |
564 | |
565 | ||
566 | int fileio_open (struct inferior *inf, const char *filename, | |
567 | int flags, int mode, int warn_if_slow, | |
568 | int *target_errno) override; | |
569 | ||
570 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
571 | ULONGEST offset, int *target_errno) override; | |
572 | ||
573 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
574 | ULONGEST offset, int *target_errno) override; | |
575 | ||
576 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
577 | ||
578 | int fileio_close (int fd, int *target_errno) override; | |
579 | ||
580 | int fileio_unlink (struct inferior *inf, | |
581 | const char *filename, | |
582 | int *target_errno) override; | |
583 | ||
584 | gdb::optional<std::string> | |
585 | fileio_readlink (struct inferior *inf, | |
586 | const char *filename, | |
587 | int *target_errno) override; | |
588 | ||
57810aa7 | 589 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 590 | |
57810aa7 | 591 | bool supports_string_tracing () override; |
f6ac5f3d | 592 | |
57810aa7 | 593 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 594 | |
57810aa7 | 595 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
596 | |
597 | void trace_init () override; | |
598 | ||
599 | void download_tracepoint (struct bp_location *location) override; | |
600 | ||
57810aa7 | 601 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
602 | |
603 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
604 | ||
605 | void enable_tracepoint (struct bp_location *location) override; | |
606 | ||
607 | void disable_tracepoint (struct bp_location *location) override; | |
608 | ||
609 | void trace_set_readonly_regions () override; | |
610 | ||
611 | void trace_start () override; | |
612 | ||
613 | int get_trace_status (struct trace_status *ts) override; | |
614 | ||
615 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
616 | override; | |
617 | ||
618 | void trace_stop () override; | |
619 | ||
620 | int trace_find (enum trace_find_type type, int num, | |
621 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
622 | ||
57810aa7 | 623 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
624 | |
625 | int save_trace_data (const char *filename) override; | |
626 | ||
627 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
628 | ||
629 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
630 | ||
631 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
632 | ||
633 | int get_min_fast_tracepoint_insn_len () override; | |
634 | ||
635 | void set_disconnected_tracing (int val) override; | |
636 | ||
637 | void set_circular_trace_buffer (int val) override; | |
638 | ||
639 | void set_trace_buffer_size (LONGEST val) override; | |
640 | ||
57810aa7 PA |
641 | bool set_trace_notes (const char *user, const char *notes, |
642 | const char *stopnotes) override; | |
f6ac5f3d PA |
643 | |
644 | int core_of_thread (ptid_t ptid) override; | |
645 | ||
646 | int verify_memory (const gdb_byte *data, | |
647 | CORE_ADDR memaddr, ULONGEST size) override; | |
648 | ||
649 | ||
57810aa7 | 650 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
651 | |
652 | void set_permissions () override; | |
653 | ||
654 | bool static_tracepoint_marker_at (CORE_ADDR, | |
655 | struct static_tracepoint_marker *marker) | |
656 | override; | |
657 | ||
658 | std::vector<static_tracepoint_marker> | |
659 | static_tracepoint_markers_by_strid (const char *id) override; | |
660 | ||
661 | traceframe_info_up traceframe_info () override; | |
662 | ||
57810aa7 PA |
663 | bool use_agent (bool use) override; |
664 | bool can_use_agent () override; | |
f6ac5f3d PA |
665 | |
666 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
667 | const struct btrace_config *conf) override; | |
668 | ||
669 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
670 | ||
671 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
672 | ||
673 | enum btrace_error read_btrace (struct btrace_data *data, | |
674 | struct btrace_target_info *btinfo, | |
675 | enum btrace_read_type type) override; | |
676 | ||
677 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 678 | bool augmented_libraries_svr4_read () override; |
5ab2fbf1 | 679 | bool follow_fork (bool, bool) override; |
4ca51187 | 680 | void follow_exec (struct inferior *, const char *) override; |
f6ac5f3d PA |
681 | int insert_fork_catchpoint (int) override; |
682 | int remove_fork_catchpoint (int) override; | |
683 | int insert_vfork_catchpoint (int) override; | |
684 | int remove_vfork_catchpoint (int) override; | |
685 | int insert_exec_catchpoint (int) override; | |
686 | int remove_exec_catchpoint (int) override; | |
687 | enum exec_direction_kind execution_direction () override; | |
688 | ||
6b8edb51 PA |
689 | public: /* Remote specific methods. */ |
690 | ||
691 | void remote_download_command_source (int num, ULONGEST addr, | |
692 | struct command_line *cmds); | |
693 | ||
694 | void remote_file_put (const char *local_file, const char *remote_file, | |
695 | int from_tty); | |
696 | void remote_file_get (const char *remote_file, const char *local_file, | |
697 | int from_tty); | |
698 | void remote_file_delete (const char *remote_file, int from_tty); | |
699 | ||
700 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
701 | ULONGEST offset, int *remote_errno); | |
702 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
703 | ULONGEST offset, int *remote_errno); | |
704 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
705 | ULONGEST offset, int *remote_errno); | |
706 | ||
707 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
708 | int *remote_errno, char **attachment, | |
709 | int *attachment_len); | |
710 | int remote_hostio_set_filesystem (struct inferior *inf, | |
711 | int *remote_errno); | |
712 | /* We should get rid of this and use fileio_open directly. */ | |
713 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
714 | int flags, int mode, int warn_if_slow, | |
715 | int *remote_errno); | |
716 | int remote_hostio_close (int fd, int *remote_errno); | |
717 | ||
718 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
719 | int *remote_errno); | |
720 | ||
721 | struct remote_state *get_remote_state (); | |
722 | ||
723 | long get_remote_packet_size (void); | |
724 | long get_memory_packet_size (struct memory_packet_config *config); | |
725 | ||
726 | long get_memory_write_packet_size (); | |
727 | long get_memory_read_packet_size (); | |
728 | ||
729 | char *append_pending_thread_resumptions (char *p, char *endp, | |
730 | ptid_t ptid); | |
d9f719f1 | 731 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 732 | void start_remote (int from_tty, int extended_p); |
00431a78 | 733 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
734 | |
735 | char *append_resumption (char *p, char *endp, | |
736 | ptid_t ptid, int step, gdb_signal siggnal); | |
737 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
738 | gdb_signal siggnal); | |
739 | ||
740 | void add_current_inferior_and_thread (char *wait_status); | |
741 | ||
742 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 743 | target_wait_flags options); |
6b8edb51 | 744 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 745 | target_wait_flags options); |
6b8edb51 PA |
746 | |
747 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
748 | target_waitstatus *status); | |
749 | ||
750 | void remote_notice_new_inferior (ptid_t currthread, int executing); | |
751 | ||
752 | void process_initial_stop_replies (int from_tty); | |
753 | ||
00431a78 | 754 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
755 | |
756 | void btrace_sync_conf (const btrace_config *conf); | |
757 | ||
758 | void remote_btrace_maybe_reopen (); | |
759 | ||
760 | void remove_new_fork_children (threads_listing_context *context); | |
761 | void kill_new_fork_children (int pid); | |
762 | void discard_pending_stop_replies (struct inferior *inf); | |
763 | int stop_reply_queue_length (); | |
764 | ||
765 | void check_pending_events_prevent_wildcard_vcont | |
766 | (int *may_global_wildcard_vcont); | |
767 | ||
768 | void discard_pending_stop_replies_in_queue (); | |
769 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
770 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
771 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 772 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
773 | |
774 | void remote_stop_ns (ptid_t ptid); | |
775 | void remote_interrupt_as (); | |
776 | void remote_interrupt_ns (); | |
777 | ||
778 | char *remote_get_noisy_reply (); | |
779 | int remote_query_attached (int pid); | |
9ab8741a | 780 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
781 | int try_open_exec); |
782 | ||
783 | ptid_t remote_current_thread (ptid_t oldpid); | |
784 | ptid_t get_current_thread (char *wait_status); | |
785 | ||
786 | void set_thread (ptid_t ptid, int gen); | |
787 | void set_general_thread (ptid_t ptid); | |
788 | void set_continue_thread (ptid_t ptid); | |
789 | void set_general_process (); | |
790 | ||
791 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
792 | ||
793 | int remote_unpack_thread_info_response (char *pkt, threadref *expectedref, | |
794 | gdb_ext_thread_info *info); | |
795 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
796 | gdb_ext_thread_info *info); | |
797 | ||
798 | int parse_threadlist_response (char *pkt, int result_limit, | |
799 | threadref *original_echo, | |
800 | threadref *resultlist, | |
801 | int *doneflag); | |
802 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
803 | int result_limit, int *done, int *result_count, | |
804 | threadref *threadlist); | |
805 | ||
806 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
807 | void *context, int looplimit); | |
808 | ||
809 | int remote_get_threads_with_ql (threads_listing_context *context); | |
810 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
811 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
812 | ||
813 | void extended_remote_restart (); | |
814 | ||
815 | void get_offsets (); | |
816 | ||
817 | void remote_check_symbols (); | |
818 | ||
819 | void remote_supported_packet (const struct protocol_feature *feature, | |
820 | enum packet_support support, | |
821 | const char *argument); | |
822 | ||
823 | void remote_query_supported (); | |
824 | ||
825 | void remote_packet_size (const protocol_feature *feature, | |
826 | packet_support support, const char *value); | |
827 | ||
828 | void remote_serial_quit_handler (); | |
829 | ||
830 | void remote_detach_pid (int pid); | |
831 | ||
832 | void remote_vcont_probe (); | |
833 | ||
834 | void remote_resume_with_hc (ptid_t ptid, int step, | |
835 | gdb_signal siggnal); | |
836 | ||
837 | void send_interrupt_sequence (); | |
838 | void interrupt_query (); | |
839 | ||
840 | void remote_notif_get_pending_events (notif_client *nc); | |
841 | ||
842 | int fetch_register_using_p (struct regcache *regcache, | |
843 | packet_reg *reg); | |
844 | int send_g_packet (); | |
845 | void process_g_packet (struct regcache *regcache); | |
846 | void fetch_registers_using_g (struct regcache *regcache); | |
847 | int store_register_using_P (const struct regcache *regcache, | |
848 | packet_reg *reg); | |
849 | void store_registers_using_G (const struct regcache *regcache); | |
850 | ||
851 | void set_remote_traceframe (); | |
852 | ||
853 | void check_binary_download (CORE_ADDR addr); | |
854 | ||
855 | target_xfer_status remote_write_bytes_aux (const char *header, | |
856 | CORE_ADDR memaddr, | |
857 | const gdb_byte *myaddr, | |
858 | ULONGEST len_units, | |
859 | int unit_size, | |
860 | ULONGEST *xfered_len_units, | |
861 | char packet_format, | |
862 | int use_length); | |
863 | ||
864 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
865 | const gdb_byte *myaddr, ULONGEST len, | |
866 | int unit_size, ULONGEST *xfered_len); | |
867 | ||
868 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
869 | ULONGEST len_units, | |
870 | int unit_size, ULONGEST *xfered_len_units); | |
871 | ||
872 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
873 | ULONGEST memaddr, | |
874 | ULONGEST len, | |
875 | int unit_size, | |
876 | ULONGEST *xfered_len); | |
877 | ||
878 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
879 | gdb_byte *myaddr, ULONGEST len, | |
880 | int unit_size, | |
881 | ULONGEST *xfered_len); | |
882 | ||
883 | packet_result remote_send_printf (const char *format, ...) | |
884 | ATTRIBUTE_PRINTF (2, 3); | |
885 | ||
886 | target_xfer_status remote_flash_write (ULONGEST address, | |
887 | ULONGEST length, ULONGEST *xfered_len, | |
888 | const gdb_byte *data); | |
889 | ||
890 | int readchar (int timeout); | |
891 | ||
892 | void remote_serial_write (const char *str, int len); | |
893 | ||
894 | int putpkt (const char *buf); | |
895 | int putpkt_binary (const char *buf, int cnt); | |
896 | ||
8d64371b TT |
897 | int putpkt (const gdb::char_vector &buf) |
898 | { | |
899 | return putpkt (buf.data ()); | |
900 | } | |
901 | ||
6b8edb51 | 902 | void skip_frame (); |
8d64371b TT |
903 | long read_frame (gdb::char_vector *buf_p); |
904 | void getpkt (gdb::char_vector *buf, int forever); | |
905 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 906 | int expecting_notif, int *is_notif); |
8d64371b TT |
907 | int getpkt_sane (gdb::char_vector *buf, int forever); |
908 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
909 | int *is_notif); |
910 | int remote_vkill (int pid); | |
911 | void remote_kill_k (); | |
912 | ||
913 | void extended_remote_disable_randomization (int val); | |
914 | int extended_remote_run (const std::string &args); | |
915 | ||
916 | void send_environment_packet (const char *action, | |
917 | const char *packet, | |
918 | const char *value); | |
919 | ||
920 | void extended_remote_environment_support (); | |
3c69da40 | 921 | void extended_remote_set_inferior_cwd (); |
80152258 | 922 | |
3c69da40 PA |
923 | target_xfer_status remote_write_qxfer (const char *object_name, |
924 | const char *annex, | |
925 | const gdb_byte *writebuf, | |
926 | ULONGEST offset, LONGEST len, | |
927 | ULONGEST *xfered_len, | |
928 | struct packet_config *packet); | |
43c3a0e4 | 929 | |
3c69da40 PA |
930 | target_xfer_status remote_read_qxfer (const char *object_name, |
931 | const char *annex, | |
932 | gdb_byte *readbuf, ULONGEST offset, | |
933 | LONGEST len, | |
934 | ULONGEST *xfered_len, | |
935 | struct packet_config *packet); | |
43c3a0e4 | 936 | |
3c69da40 | 937 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 938 | |
3c69da40 | 939 | bool vcont_r_supported (); |
43c3a0e4 | 940 | |
3c69da40 | 941 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 942 | |
3c69da40 | 943 | private: /* data fields */ |
43c3a0e4 | 944 | |
3c69da40 PA |
945 | /* The remote state. Don't reference this directly. Use the |
946 | get_remote_state method instead. */ | |
947 | remote_state m_remote_state; | |
43c3a0e4 PA |
948 | }; |
949 | ||
3c69da40 PA |
950 | static const target_info extended_remote_target_info = { |
951 | "extended-remote", | |
952 | N_("Extended remote serial target in gdb-specific protocol"), | |
953 | remote_doc | |
954 | }; | |
ea9c271d | 955 | |
3c69da40 PA |
956 | /* Set up the extended remote target by extending the standard remote |
957 | target and adding to it. */ | |
958 | ||
959 | class extended_remote_target final : public remote_target | |
ea9c271d | 960 | { |
9d6eea31 | 961 | public: |
3c69da40 PA |
962 | const target_info &info () const override |
963 | { return extended_remote_target_info; } | |
9d6eea31 | 964 | |
3c69da40 PA |
965 | /* Open an extended-remote connection. */ |
966 | static void open (const char *, int); | |
de44f5a7 | 967 | |
3c69da40 PA |
968 | bool can_create_inferior () override { return true; } |
969 | void create_inferior (const char *, const std::string &, | |
970 | char **, int) override; | |
9d6eea31 | 971 | |
3c69da40 | 972 | void detach (inferior *, int) override; |
9d6eea31 | 973 | |
3c69da40 PA |
974 | bool can_attach () override { return true; } |
975 | void attach (const char *, int) override; | |
be2a5f71 | 976 | |
3c69da40 PA |
977 | void post_attach (int) override; |
978 | bool supports_disable_randomization () override; | |
979 | }; | |
1e51243a | 980 | |
3c69da40 | 981 | /* Per-program-space data key. */ |
7b4a314f TT |
982 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
983 | remote_pspace_data; | |
2d717e4f | 984 | |
3c69da40 PA |
985 | /* The variable registered as the control variable used by the |
986 | remote exec-file commands. While the remote exec-file setting is | |
987 | per-program-space, the set/show machinery uses this as the | |
988 | location of the remote exec-file value. */ | |
989 | static char *remote_exec_file_var; | |
a6f3e723 | 990 | |
3c69da40 PA |
991 | /* The size to align memory write packets, when practical. The protocol |
992 | does not guarantee any alignment, and gdb will generate short | |
993 | writes and unaligned writes, but even as a best-effort attempt this | |
994 | can improve bulk transfers. For instance, if a write is misaligned | |
995 | relative to the target's data bus, the stub may need to make an extra | |
996 | round trip fetching data from the target. This doesn't make a | |
997 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 998 | |
3c69da40 PA |
999 | The alignment chosen is arbitrary; usually data bus width is |
1000 | important here, not the possibly larger cache line size. */ | |
1001 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1002 | |
3c69da40 | 1003 | /* Prototypes for local functions. */ |
74531fed | 1004 | |
3c69da40 | 1005 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1006 | |
3c69da40 | 1007 | static int stubhex (int ch); |
5d93a237 | 1008 | |
3c69da40 | 1009 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1010 | |
3c69da40 | 1011 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1012 | |
3c69da40 | 1013 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1014 | |
3c69da40 | 1015 | static void print_packet (const char *); |
747dc59d | 1016 | |
3c69da40 | 1017 | static int stub_unpack_int (char *buff, int fieldlength); |
5e4a05c4 | 1018 | |
3c69da40 | 1019 | struct packet_config; |
b73be471 | 1020 | |
3c69da40 | 1021 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1022 | |
3c69da40 PA |
1023 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1024 | int from_tty, | |
1025 | struct cmd_list_element *c, | |
1026 | const char *value); | |
8e88304f | 1027 | |
3c69da40 | 1028 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1029 | |
3c69da40 | 1030 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1031 | |
eefce37f | 1032 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1033 | |
05be00a8 | 1034 | static void remote_console_output (const char *msg); |
5965e028 | 1035 | |
3c69da40 | 1036 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1037 | |
5b6d1e4f | 1038 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1039 | |
3c69da40 | 1040 | /* For "remote". */ |
80152258 | 1041 | |
3c69da40 | 1042 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1043 | |
3c69da40 | 1044 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1045 | |
3c69da40 PA |
1046 | static struct cmd_list_element *remote_set_cmdlist; |
1047 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1048 | |
3c69da40 | 1049 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1050 | |
491144b5 | 1051 | static bool use_range_stepping = true; |
3c69da40 | 1052 | |
7aabaf9d SM |
1053 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1054 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1055 | { |
7aabaf9d SM |
1056 | std::string extra; |
1057 | std::string name; | |
1058 | int core = -1; | |
799a2abe | 1059 | |
f6327dcb KB |
1060 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1061 | sequence of bytes. */ | |
7aabaf9d | 1062 | gdb::byte_vector thread_handle; |
f6327dcb | 1063 | |
799a2abe | 1064 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1065 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1066 | |
1067 | /* This is set to the data address of the access causing the target | |
1068 | to stop for a watchpoint. */ | |
7aabaf9d | 1069 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
1070 | |
1071 | /* Fields used by the vCont action coalescing implemented in | |
1072 | remote_resume / remote_commit_resume. remote_resume stores each | |
1073 | thread's last resume request in these fields, so that a later | |
1074 | remote_commit_resume knows which is the proper action for this | |
1075 | thread to include in the vCont packet. */ | |
1076 | ||
1077 | /* True if the last target_resume call for this thread was a step | |
1078 | request, false if a continue request. */ | |
7aabaf9d | 1079 | int last_resume_step = 0; |
85ad3aaf PA |
1080 | |
1081 | /* The signal specified in the last target_resume call for this | |
1082 | thread. */ | |
7aabaf9d | 1083 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
1084 | |
1085 | /* Whether this thread was already vCont-resumed on the remote | |
1086 | side. */ | |
7aabaf9d | 1087 | int vcont_resumed = 0; |
dc146f7c VP |
1088 | }; |
1089 | ||
de44f5a7 | 1090 | remote_state::remote_state () |
8d64371b | 1091 | : buf (400) |
de44f5a7 | 1092 | { |
de44f5a7 PA |
1093 | } |
1094 | ||
1095 | remote_state::~remote_state () | |
1096 | { | |
1097 | xfree (this->last_pass_packet); | |
1098 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1099 | xfree (this->finished_object); |
1100 | xfree (this->finished_annex); | |
cf792862 TT |
1101 | } |
1102 | ||
35b1e5cc SS |
1103 | /* Utility: generate error from an incoming stub packet. */ |
1104 | static void | |
1105 | trace_error (char *buf) | |
1106 | { | |
1107 | if (*buf++ != 'E') | |
1108 | return; /* not an error msg */ | |
1109 | switch (*buf) | |
1110 | { | |
1111 | case '1': /* malformed packet error */ | |
1112 | if (*++buf == '0') /* general case: */ | |
1113 | error (_("remote.c: error in outgoing packet.")); | |
1114 | else | |
1115 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1116 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1117 | default: |
1118 | error (_("Target returns error code '%s'."), buf); | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1123 | |
6b8edb51 PA |
1124 | char * |
1125 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1126 | { |
b6bb3468 PA |
1127 | struct remote_state *rs = get_remote_state (); |
1128 | ||
35b1e5cc SS |
1129 | do /* Loop on reply from remote stub. */ |
1130 | { | |
1131 | char *buf; | |
a744cf53 | 1132 | |
0df8b418 | 1133 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1134 | getpkt (&rs->buf, 0); |
1135 | buf = rs->buf.data (); | |
ad91cd99 | 1136 | if (buf[0] == 'E') |
35b1e5cc | 1137 | trace_error (buf); |
61012eef | 1138 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1139 | { |
1140 | ULONGEST ul; | |
1141 | CORE_ADDR from, to, org_to; | |
256642e8 | 1142 | const char *p, *pp; |
dde08ee1 | 1143 | int adjusted_size = 0; |
7556d4a4 | 1144 | int relocated = 0; |
dde08ee1 PA |
1145 | |
1146 | p = buf + strlen ("qRelocInsn:"); | |
1147 | pp = unpack_varlen_hex (p, &ul); | |
1148 | if (*pp != ';') | |
cb91c06a | 1149 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1150 | from = ul; |
1151 | ||
1152 | p = pp + 1; | |
a9cbf802 | 1153 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1154 | to = ul; |
1155 | ||
1156 | org_to = to; | |
1157 | ||
a70b8144 | 1158 | try |
dde08ee1 | 1159 | { |
f5656ead | 1160 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1161 | relocated = 1; |
dde08ee1 | 1162 | } |
230d2906 | 1163 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1164 | { |
1165 | if (ex.error == MEMORY_ERROR) | |
1166 | { | |
1167 | /* Propagate memory errors silently back to the | |
1168 | target. The stub may have limited the range of | |
1169 | addresses we can write to, for example. */ | |
1170 | } | |
1171 | else | |
1172 | { | |
1173 | /* Something unexpectedly bad happened. Be verbose | |
1174 | so we can tell what, and propagate the error back | |
1175 | to the stub, so it doesn't get stuck waiting for | |
1176 | a response. */ | |
1177 | exception_fprintf (gdb_stderr, ex, | |
1178 | _("warning: relocating instruction: ")); | |
1179 | } | |
1180 | putpkt ("E01"); | |
1181 | } | |
1182 | ||
1183 | if (relocated) | |
dde08ee1 PA |
1184 | { |
1185 | adjusted_size = to - org_to; | |
1186 | ||
8d64371b | 1187 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1188 | putpkt (buf); |
1189 | } | |
dde08ee1 | 1190 | } |
ad91cd99 | 1191 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1192 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1193 | else | |
0df8b418 | 1194 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1195 | } |
1196 | while (1); | |
1197 | } | |
3c3bea1c | 1198 | |
9d6eea31 PA |
1199 | struct remote_arch_state * |
1200 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1201 | { |
43c3a0e4 PA |
1202 | remote_arch_state *rsa; |
1203 | ||
1204 | auto it = this->m_arch_states.find (gdbarch); | |
1205 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1206 | { |
43c3a0e4 PA |
1207 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1208 | std::forward_as_tuple (gdbarch), | |
1209 | std::forward_as_tuple (gdbarch)); | |
1210 | rsa = &p.first->second; | |
9d6eea31 PA |
1211 | |
1212 | /* Make sure that the packet buffer is plenty big enough for | |
1213 | this architecture. */ | |
8d64371b TT |
1214 | if (this->buf.size () < rsa->remote_packet_size) |
1215 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1216 | } |
43c3a0e4 PA |
1217 | else |
1218 | rsa = &it->second; | |
1219 | ||
1220 | return rsa; | |
d01949b6 AC |
1221 | } |
1222 | ||
0b83947e DJ |
1223 | /* Fetch the global remote target state. */ |
1224 | ||
6b8edb51 PA |
1225 | remote_state * |
1226 | remote_target::get_remote_state () | |
0b83947e DJ |
1227 | { |
1228 | /* Make sure that the remote architecture state has been | |
1229 | initialized, because doing so might reallocate rs->buf. Any | |
1230 | function which calls getpkt also needs to be mindful of changes | |
1231 | to rs->buf, but this call limits the number of places which run | |
1232 | into trouble. */ | |
3c69da40 | 1233 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1234 | |
3c69da40 | 1235 | return &m_remote_state; |
0b83947e DJ |
1236 | } |
1237 | ||
94585166 DB |
1238 | /* Fetch the remote exec-file from the current program space. */ |
1239 | ||
1240 | static const char * | |
1241 | get_remote_exec_file (void) | |
1242 | { | |
1243 | char *remote_exec_file; | |
1244 | ||
7b4a314f | 1245 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1246 | if (remote_exec_file == NULL) |
1247 | return ""; | |
1248 | ||
1249 | return remote_exec_file; | |
1250 | } | |
1251 | ||
1252 | /* Set the remote exec file for PSPACE. */ | |
1253 | ||
1254 | static void | |
1255 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1256 | const char *remote_exec_file) |
94585166 | 1257 | { |
7b4a314f | 1258 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1259 | |
1260 | xfree (old_file); | |
7b4a314f | 1261 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1262 | } |
1263 | ||
1264 | /* The "set/show remote exec-file" set command hook. */ | |
1265 | ||
1266 | static void | |
eb4c3f4a | 1267 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1268 | struct cmd_list_element *c) |
1269 | { | |
1270 | gdb_assert (remote_exec_file_var != NULL); | |
1271 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1272 | } | |
1273 | ||
1274 | /* The "set/show remote exec-file" show command hook. */ | |
1275 | ||
1276 | static void | |
1277 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1278 | struct cmd_list_element *cmd, const char *value) | |
1279 | { | |
acdf84a6 | 1280 | fprintf_filtered (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1281 | } |
1282 | ||
c21236dc PA |
1283 | static int |
1284 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1285 | { |
74ca34ce | 1286 | int regnum, num_remote_regs, offset; |
74ca34ce | 1287 | struct packet_reg **remote_regs; |
ea9c271d | 1288 | |
4a22f64d | 1289 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1290 | { |
c21236dc | 1291 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1292 | |
4a22f64d | 1293 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1294 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1295 | r->pnum = -1; | |
1296 | else | |
1297 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1298 | ||
b323314b | 1299 | r->regnum = regnum; |
74ca34ce DJ |
1300 | } |
1301 | ||
1302 | /* Define the g/G packet format as the contents of each register | |
1303 | with a remote protocol number, in order of ascending protocol | |
1304 | number. */ | |
1305 | ||
224c3ddb | 1306 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1307 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1308 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1309 | regnum++) |
c21236dc PA |
1310 | if (regs[regnum].pnum != -1) |
1311 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1312 | |
39ef2f62 CB |
1313 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1314 | [] (const packet_reg *a, const packet_reg *b) | |
1315 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1316 | |
1317 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1318 | { | |
1319 | remote_regs[regnum]->in_g_packet = 1; | |
1320 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1321 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1322 | } |
1323 | ||
c21236dc PA |
1324 | return offset; |
1325 | } | |
1326 | ||
1327 | /* Given the architecture described by GDBARCH, return the remote | |
1328 | protocol register's number and the register's offset in the g/G | |
1329 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1330 | If the target does not have a mapping for REGNUM, return false, | |
1331 | otherwise, return true. */ | |
1332 | ||
1333 | int | |
1334 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1335 | int *pnum, int *poffset) | |
1336 | { | |
c21236dc PA |
1337 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1338 | ||
b80406ac | 1339 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1340 | |
b80406ac | 1341 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1342 | |
1343 | *pnum = regs[regnum].pnum; | |
1344 | *poffset = regs[regnum].offset; | |
1345 | ||
c21236dc PA |
1346 | return *pnum != -1; |
1347 | } | |
1348 | ||
9d6eea31 | 1349 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1350 | { |
c21236dc PA |
1351 | /* Use the architecture to build a regnum<->pnum table, which will be |
1352 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1353 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1354 | |
74ca34ce DJ |
1355 | /* Record the maximum possible size of the g packet - it may turn out |
1356 | to be smaller. */ | |
9d6eea31 PA |
1357 | this->sizeof_g_packet |
1358 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1359 | |
0df8b418 | 1360 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1361 | remote stubs have a hardwired buffer size of 400 bytes |
1362 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1363 | as the maximum packet-size to ensure that the packet and an extra | |
1364 | NUL character can always fit in the buffer. This stops GDB | |
1365 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1366 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1367 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1368 | |
ea9c271d | 1369 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1370 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1371 | |
1372 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1373 | default, adjust the size accordingly. Remember that each byte is |
1374 | encoded as two characters. 32 is the overhead for the packet | |
1375 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1376 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1377 | little. */ |
9d6eea31 PA |
1378 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1379 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1380 | } |
1381 | ||
6b8edb51 PA |
1382 | /* Get a pointer to the current remote target. If not connected to a |
1383 | remote target, return NULL. */ | |
1384 | ||
1385 | static remote_target * | |
1386 | get_current_remote_target () | |
1387 | { | |
5b6d1e4f | 1388 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1389 | return dynamic_cast<remote_target *> (proc_target); |
1390 | } | |
1391 | ||
ea9c271d DJ |
1392 | /* Return the current allowed size of a remote packet. This is |
1393 | inferred from the current architecture, and should be used to | |
1394 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1395 | long |
1396 | remote_target::get_remote_packet_size () | |
ea9c271d | 1397 | { |
be2a5f71 | 1398 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1399 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1400 | |
be2a5f71 DJ |
1401 | if (rs->explicit_packet_size) |
1402 | return rs->explicit_packet_size; | |
1403 | ||
ea9c271d | 1404 | return rsa->remote_packet_size; |
d01949b6 AC |
1405 | } |
1406 | ||
ad10f812 | 1407 | static struct packet_reg * |
5cd63fda PA |
1408 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1409 | long regnum) | |
ad10f812 | 1410 | { |
5cd63fda | 1411 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1412 | return NULL; |
1413 | else | |
ad10f812 | 1414 | { |
ea9c271d | 1415 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1416 | |
b323314b AC |
1417 | gdb_assert (r->regnum == regnum); |
1418 | return r; | |
ad10f812 | 1419 | } |
ad10f812 AC |
1420 | } |
1421 | ||
1422 | static struct packet_reg * | |
5cd63fda PA |
1423 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1424 | LONGEST pnum) | |
ad10f812 | 1425 | { |
b323314b | 1426 | int i; |
a744cf53 | 1427 | |
5cd63fda | 1428 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1429 | { |
ea9c271d | 1430 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1431 | |
b323314b AC |
1432 | if (r->pnum == pnum) |
1433 | return r; | |
ad10f812 AC |
1434 | } |
1435 | return NULL; | |
d01949b6 AC |
1436 | } |
1437 | ||
9a7071a8 JB |
1438 | /* Allow the user to specify what sequence to send to the remote |
1439 | when he requests a program interruption: Although ^C is usually | |
1440 | what remote systems expect (this is the default, here), it is | |
1441 | sometimes preferable to send a break. On other systems such | |
1442 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1443 | is required in order to interrupt the execution. */ | |
1444 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1445 | const char interrupt_sequence_break[] = "BREAK"; | |
1446 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1447 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1448 | { |
1449 | interrupt_sequence_control_c, | |
1450 | interrupt_sequence_break, | |
1451 | interrupt_sequence_break_g, | |
1452 | NULL | |
1453 | }; | |
1454 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1455 | ||
1456 | static void | |
1457 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1458 | struct cmd_list_element *c, | |
1459 | const char *value) | |
1460 | { | |
1461 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1462 | fprintf_filtered (file, | |
1463 | _("Send the ASCII ETX character (Ctrl-c) " | |
1464 | "to the remote target to interrupt the " | |
1465 | "execution of the program.\n")); | |
1466 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1467 | fprintf_filtered (file, | |
1468 | _("send a break signal to the remote target " | |
1469 | "to interrupt the execution of the program.\n")); | |
1470 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1471 | fprintf_filtered (file, | |
1472 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1473 | "the remote target to interrupt the execution " | |
1474 | "of Linux kernel.\n")); | |
1475 | else | |
1476 | internal_error (__FILE__, __LINE__, | |
1477 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1478 | interrupt_sequence_mode); | |
1479 | } | |
6426a772 | 1480 | |
9a7071a8 JB |
1481 | /* This boolean variable specifies whether interrupt_sequence is sent |
1482 | to the remote target when gdb connects to it. | |
1483 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1484 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1485 | static bool interrupt_on_connect = false; |
c906108c | 1486 | |
9a7071a8 JB |
1487 | /* This variable is used to implement the "set/show remotebreak" commands. |
1488 | Since these commands are now deprecated in favor of "set/show remote | |
1489 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1490 | static bool remote_break; |
c906108c | 1491 | |
9a7071a8 | 1492 | static void |
eb4c3f4a | 1493 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1494 | { |
1495 | if (remote_break) | |
1496 | interrupt_sequence_mode = interrupt_sequence_break; | |
1497 | else | |
1498 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1499 | } | |
1500 | ||
1501 | static void | |
1502 | show_remotebreak (struct ui_file *file, int from_tty, | |
1503 | struct cmd_list_element *c, | |
1504 | const char *value) | |
1505 | { | |
1506 | } | |
1507 | ||
c906108c SS |
1508 | /* This variable sets the number of bits in an address that are to be |
1509 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1510 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1511 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1512 | initial implementation of remote.c restricted the address sent in | |
1513 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1514 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1515 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1516 | some remote targets this variable is principally provided to |
23860348 | 1517 | facilitate backward compatibility. */ |
c906108c | 1518 | |
883b9c6c | 1519 | static unsigned int remote_address_size; |
c906108c | 1520 | |
11cf8741 | 1521 | \f |
11cf8741 | 1522 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1523 | memory read/write packet. MIN (rsa->remote_packet_size, |
1524 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1525 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1526 | (speed up transfers). The variables ``preferred_*'' (the user |
1527 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1528 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1529 | |
1530 | struct memory_packet_config | |
1531 | { | |
a121b7c1 | 1532 | const char *name; |
11cf8741 JM |
1533 | long size; |
1534 | int fixed_p; | |
1535 | }; | |
1536 | ||
cc0be08f PA |
1537 | /* The default max memory-write-packet-size, when the setting is |
1538 | "fixed". The 16k is historical. (It came from older GDB's using | |
1539 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1540 | don't cope very well with large alloca calls.) */ | |
1541 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1542 | |
1543 | /* The minimum remote packet size for memory transfers. Ensures we | |
1544 | can write at least one byte. */ | |
1545 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1546 | ||
cc0be08f PA |
1547 | /* Get the memory packet size, assuming it is fixed. */ |
1548 | ||
1549 | static long | |
1550 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1551 | { | |
1552 | gdb_assert (config->fixed_p); | |
1553 | ||
1554 | if (config->size <= 0) | |
1555 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1556 | else | |
1557 | return config->size; | |
1558 | } | |
1559 | ||
11cf8741 JM |
1560 | /* Compute the current size of a read/write packet. Since this makes |
1561 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1562 | ||
6b8edb51 PA |
1563 | long |
1564 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1565 | { |
d01949b6 | 1566 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1567 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1568 | |
11cf8741 JM |
1569 | long what_they_get; |
1570 | if (config->fixed_p) | |
cc0be08f | 1571 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1572 | else |
1573 | { | |
ea9c271d | 1574 | what_they_get = get_remote_packet_size (); |
23860348 | 1575 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1576 | if (config->size > 0 |
1577 | && what_they_get > config->size) | |
1578 | what_they_get = config->size; | |
be2a5f71 DJ |
1579 | |
1580 | /* Limit it to the size of the targets ``g'' response unless we have | |
1581 | permission from the stub to use a larger packet size. */ | |
1582 | if (rs->explicit_packet_size == 0 | |
1583 | && rsa->actual_register_packet_size > 0 | |
1584 | && what_they_get > rsa->actual_register_packet_size) | |
1585 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1586 | } |
a5c0808e PA |
1587 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1588 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1589 | |
1590 | /* Make sure there is room in the global buffer for this packet | |
1591 | (including its trailing NUL byte). */ | |
8d64371b TT |
1592 | if (rs->buf.size () < what_they_get + 1) |
1593 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1594 | |
11cf8741 JM |
1595 | return what_they_get; |
1596 | } | |
1597 | ||
0df8b418 | 1598 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1599 | something really big then do a sanity check. */ |
11cf8741 JM |
1600 | |
1601 | static void | |
ac88e2de | 1602 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1603 | { |
1604 | int fixed_p = config->fixed_p; | |
1605 | long size = config->size; | |
a744cf53 | 1606 | |
11cf8741 | 1607 | if (args == NULL) |
8a3fe4f8 | 1608 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1609 | else if (strcmp (args, "hard") == 0 |
1610 | || strcmp (args, "fixed") == 0) | |
1611 | fixed_p = 1; | |
1612 | else if (strcmp (args, "soft") == 0 | |
1613 | || strcmp (args, "limit") == 0) | |
1614 | fixed_p = 0; | |
1615 | else | |
1616 | { | |
1617 | char *end; | |
a744cf53 | 1618 | |
11cf8741 JM |
1619 | size = strtoul (args, &end, 0); |
1620 | if (args == end) | |
8a3fe4f8 | 1621 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1622 | |
1623 | /* Instead of explicitly capping the size of a packet to or | |
1624 | disallowing it, the user is allowed to set the size to | |
1625 | something arbitrarily large. */ | |
11cf8741 | 1626 | } |
a5c0808e | 1627 | |
23860348 | 1628 | /* Extra checks? */ |
11cf8741 JM |
1629 | if (fixed_p && !config->fixed_p) |
1630 | { | |
cc0be08f PA |
1631 | /* So that the query shows the correct value. */ |
1632 | long query_size = (size <= 0 | |
1633 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1634 | : size); | |
1635 | ||
e2e0b3e5 AC |
1636 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1637 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1638 | config->name, query_size)) |
8a3fe4f8 | 1639 | error (_("Packet size not changed.")); |
11cf8741 | 1640 | } |
23860348 | 1641 | /* Update the config. */ |
11cf8741 JM |
1642 | config->fixed_p = fixed_p; |
1643 | config->size = size; | |
1644 | } | |
1645 | ||
1646 | static void | |
1647 | show_memory_packet_size (struct memory_packet_config *config) | |
1648 | { | |
cc0be08f PA |
1649 | if (config->size == 0) |
1650 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1651 | else | |
1652 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1653 | if (config->fixed_p) |
a3f17187 | 1654 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1655 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1656 | else |
cc0be08f | 1657 | { |
6b8edb51 | 1658 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1659 | |
6b8edb51 | 1660 | if (remote != NULL) |
cc0be08f | 1661 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1662 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1663 | else |
1664 | puts_filtered ("The actual limit will be further reduced " | |
1665 | "dependent on the target.\n"); | |
1666 | } | |
11cf8741 JM |
1667 | } |
1668 | ||
5b6d1e4f | 1669 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1670 | static struct memory_packet_config memory_write_packet_config = |
1671 | { | |
1672 | "memory-write-packet-size", | |
1673 | }; | |
1674 | ||
1675 | static void | |
ac88e2de | 1676 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1677 | { |
1678 | set_memory_packet_size (args, &memory_write_packet_config); | |
1679 | } | |
1680 | ||
1681 | static void | |
ac88e2de | 1682 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1683 | { |
1684 | show_memory_packet_size (&memory_write_packet_config); | |
1685 | } | |
1686 | ||
055303e2 AB |
1687 | /* Show the number of hardware watchpoints that can be used. */ |
1688 | ||
1689 | static void | |
1690 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1691 | struct cmd_list_element *c, | |
1692 | const char *value) | |
1693 | { | |
1694 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1695 | "watchpoints is %s.\n"), value); | |
1696 | } | |
1697 | ||
1698 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1699 | ||
1700 | static void | |
1701 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1702 | struct cmd_list_element *c, | |
1703 | const char *value) | |
1704 | { | |
1705 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1706 | "hardware watchpoint is %s.\n"), value); | |
1707 | } | |
1708 | ||
1709 | /* Show the number of hardware breakpoints that can be used. */ | |
1710 | ||
1711 | static void | |
1712 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1713 | struct cmd_list_element *c, | |
1714 | const char *value) | |
1715 | { | |
1716 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1717 | "breakpoints is %s.\n"), value); | |
1718 | } | |
1719 | ||
6cc8564b LM |
1720 | /* Controls the maximum number of characters to display in the debug output |
1721 | for each remote packet. The remaining characters are omitted. */ | |
1722 | ||
1723 | static int remote_packet_max_chars = 512; | |
1724 | ||
1725 | /* Show the maximum number of characters to display for each remote packet | |
1726 | when remote debugging is enabled. */ | |
1727 | ||
1728 | static void | |
1729 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1730 | struct cmd_list_element *c, | |
1731 | const char *value) | |
1732 | { | |
1733 | fprintf_filtered (file, _("Number of remote packet characters to " | |
1734 | "display is %s.\n"), value); | |
1735 | } | |
1736 | ||
6b8edb51 PA |
1737 | long |
1738 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1739 | { |
1740 | return get_memory_packet_size (&memory_write_packet_config); | |
1741 | } | |
1742 | ||
5b6d1e4f | 1743 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1744 | static struct memory_packet_config memory_read_packet_config = |
1745 | { | |
1746 | "memory-read-packet-size", | |
1747 | }; | |
1748 | ||
1749 | static void | |
ac88e2de | 1750 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1751 | { |
1752 | set_memory_packet_size (args, &memory_read_packet_config); | |
1753 | } | |
1754 | ||
1755 | static void | |
ac88e2de | 1756 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1757 | { |
1758 | show_memory_packet_size (&memory_read_packet_config); | |
1759 | } | |
1760 | ||
6b8edb51 PA |
1761 | long |
1762 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1763 | { |
1764 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1765 | |
11cf8741 JM |
1766 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1767 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1768 | increased beyond this. */ |
1769 | if (size > get_remote_packet_size ()) | |
1770 | size = get_remote_packet_size (); | |
11cf8741 JM |
1771 | return size; |
1772 | } | |
1773 | ||
11cf8741 | 1774 | \f |
5a2468f5 | 1775 | |
5a2468f5 JM |
1776 | struct packet_config |
1777 | { | |
bb572ddd DJ |
1778 | const char *name; |
1779 | const char *title; | |
4082afcc PA |
1780 | |
1781 | /* If auto, GDB auto-detects support for this packet or feature, | |
1782 | either through qSupported, or by trying the packet and looking | |
1783 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1784 | packet. If false, the packet is disabled. Configs that don't |
1785 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1786 | enum auto_boolean detect; |
4082afcc PA |
1787 | |
1788 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1789 | enum packet_support support; |
1790 | }; | |
1791 | ||
4082afcc PA |
1792 | static enum packet_support packet_config_support (struct packet_config *config); |
1793 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1794 | |
1795 | static void | |
fba45db2 | 1796 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1797 | { |
a121b7c1 | 1798 | const char *support = "internal-error"; |
a744cf53 | 1799 | |
4082afcc | 1800 | switch (packet_config_support (config)) |
5a2468f5 JM |
1801 | { |
1802 | case PACKET_ENABLE: | |
1803 | support = "enabled"; | |
1804 | break; | |
1805 | case PACKET_DISABLE: | |
1806 | support = "disabled"; | |
1807 | break; | |
1808 | case PACKET_SUPPORT_UNKNOWN: | |
1809 | support = "unknown"; | |
1810 | break; | |
1811 | } | |
1812 | switch (config->detect) | |
1813 | { | |
7f19b9a2 | 1814 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1815 | printf_filtered (_("Support for the `%s' packet " |
1816 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1817 | config->name, support); |
5a2468f5 | 1818 | break; |
7f19b9a2 AC |
1819 | case AUTO_BOOLEAN_TRUE: |
1820 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1821 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1822 | config->name, support); | |
8e248173 | 1823 | break; |
5a2468f5 JM |
1824 | } |
1825 | } | |
1826 | ||
1827 | static void | |
bb572ddd DJ |
1828 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1829 | const char *title, int legacy) | |
d471ea57 | 1830 | { |
5a2468f5 JM |
1831 | char *set_doc; |
1832 | char *show_doc; | |
d471ea57 | 1833 | char *cmd_name; |
3ed07be4 | 1834 | |
5a2468f5 JM |
1835 | config->name = name; |
1836 | config->title = title; | |
590042fc | 1837 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", |
b435e160 | 1838 | name, title); |
3e43a32a | 1839 | show_doc = xstrprintf ("Show current use of remote " |
590042fc | 1840 | "protocol `%s' (%s) packet.", |
b435e160 | 1841 | name, title); |
d471ea57 | 1842 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1843 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1844 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1845 | &config->detect, set_doc, |
1846 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1847 | NULL, |
bb572ddd DJ |
1848 | show_remote_protocol_packet_cmd, |
1849 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1850 | /* The command code copies the documentation strings. */ |
1851 | xfree (set_doc); | |
1852 | xfree (show_doc); | |
23860348 | 1853 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1854 | if (legacy) |
1855 | { | |
1856 | char *legacy_name; | |
a744cf53 | 1857 | |
b435e160 | 1858 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1859 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1860 | &remote_set_cmdlist); |
d471ea57 | 1861 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1862 | &remote_show_cmdlist); |
d471ea57 | 1863 | } |
5a2468f5 JM |
1864 | } |
1865 | ||
d471ea57 | 1866 | static enum packet_result |
a76d924d | 1867 | packet_check_result (const char *buf) |
5a2468f5 | 1868 | { |
d471ea57 | 1869 | if (buf[0] != '\0') |
5a2468f5 | 1870 | { |
d471ea57 | 1871 | /* The stub recognized the packet request. Check that the |
23860348 | 1872 | operation succeeded. */ |
a76d924d DJ |
1873 | if (buf[0] == 'E' |
1874 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1875 | && buf[3] == '\0') | |
85102364 | 1876 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
1877 | return PACKET_ERROR; |
1878 | ||
1879 | /* Always treat "E." as an error. This will be used for | |
1880 | more verbose error messages, such as E.memtypes. */ | |
1881 | if (buf[0] == 'E' && buf[1] == '.') | |
1882 | return PACKET_ERROR; | |
1883 | ||
1884 | /* The packet may or may not be OK. Just assume it is. */ | |
1885 | return PACKET_OK; | |
1886 | } | |
1887 | else | |
1888 | /* The stub does not support the packet. */ | |
1889 | return PACKET_UNKNOWN; | |
1890 | } | |
1891 | ||
8d64371b TT |
1892 | static enum packet_result |
1893 | packet_check_result (const gdb::char_vector &buf) | |
1894 | { | |
1895 | return packet_check_result (buf.data ()); | |
1896 | } | |
1897 | ||
a76d924d DJ |
1898 | static enum packet_result |
1899 | packet_ok (const char *buf, struct packet_config *config) | |
1900 | { | |
1901 | enum packet_result result; | |
1902 | ||
4082afcc PA |
1903 | if (config->detect != AUTO_BOOLEAN_TRUE |
1904 | && config->support == PACKET_DISABLE) | |
1905 | internal_error (__FILE__, __LINE__, | |
1906 | _("packet_ok: attempt to use a disabled packet")); | |
1907 | ||
a76d924d DJ |
1908 | result = packet_check_result (buf); |
1909 | switch (result) | |
1910 | { | |
1911 | case PACKET_OK: | |
1912 | case PACKET_ERROR: | |
1913 | /* The stub recognized the packet request. */ | |
4082afcc | 1914 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1915 | { |
d471ea57 AC |
1916 | if (remote_debug) |
1917 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1918 | "Packet %s (%s) is supported\n", |
1919 | config->name, config->title); | |
d471ea57 | 1920 | config->support = PACKET_ENABLE; |
d471ea57 | 1921 | } |
a76d924d DJ |
1922 | break; |
1923 | case PACKET_UNKNOWN: | |
23860348 | 1924 | /* The stub does not support the packet. */ |
4082afcc PA |
1925 | if (config->detect == AUTO_BOOLEAN_AUTO |
1926 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1927 | { |
4082afcc PA |
1928 | /* If the stub previously indicated that the packet was |
1929 | supported then there is a protocol error. */ | |
1930 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1931 | config->name, config->title); | |
1932 | } | |
1933 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1934 | { | |
1935 | /* The user set it wrong. */ | |
1936 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1937 | config->name, config->title); | |
d471ea57 | 1938 | } |
4082afcc PA |
1939 | |
1940 | if (remote_debug) | |
1941 | fprintf_unfiltered (gdb_stdlog, | |
1942 | "Packet %s (%s) is NOT supported\n", | |
1943 | config->name, config->title); | |
1944 | config->support = PACKET_DISABLE; | |
a76d924d | 1945 | break; |
5a2468f5 | 1946 | } |
a76d924d DJ |
1947 | |
1948 | return result; | |
5a2468f5 JM |
1949 | } |
1950 | ||
8d64371b TT |
1951 | static enum packet_result |
1952 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
1953 | { | |
1954 | return packet_ok (buf.data (), config); | |
1955 | } | |
1956 | ||
444abaca DJ |
1957 | enum { |
1958 | PACKET_vCont = 0, | |
1959 | PACKET_X, | |
1960 | PACKET_qSymbol, | |
1961 | PACKET_P, | |
1962 | PACKET_p, | |
1963 | PACKET_Z0, | |
1964 | PACKET_Z1, | |
1965 | PACKET_Z2, | |
1966 | PACKET_Z3, | |
1967 | PACKET_Z4, | |
15a201c8 | 1968 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1969 | PACKET_vFile_open, |
1970 | PACKET_vFile_pread, | |
1971 | PACKET_vFile_pwrite, | |
1972 | PACKET_vFile_close, | |
1973 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1974 | PACKET_vFile_readlink, |
0a93529c | 1975 | PACKET_vFile_fstat, |
0876f84a | 1976 | PACKET_qXfer_auxv, |
23181151 | 1977 | PACKET_qXfer_features, |
c78fa86a | 1978 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1979 | PACKET_qXfer_libraries, |
2268b414 | 1980 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1981 | PACKET_qXfer_memory_map, |
07e059b5 | 1982 | PACKET_qXfer_osdata, |
dc146f7c | 1983 | PACKET_qXfer_threads, |
0fb4aa4b | 1984 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1985 | PACKET_qXfer_traceframe_info, |
169081d0 | 1986 | PACKET_qXfer_uib, |
711e434b | 1987 | PACKET_qGetTIBAddr, |
444abaca | 1988 | PACKET_qGetTLSAddr, |
be2a5f71 | 1989 | PACKET_qSupported, |
bd3eecc3 | 1990 | PACKET_qTStatus, |
89be2091 | 1991 | PACKET_QPassSignals, |
82075af2 | 1992 | PACKET_QCatchSyscalls, |
9b224c5e | 1993 | PACKET_QProgramSignals, |
bc3b087d | 1994 | PACKET_QSetWorkingDir, |
aefd8b33 | 1995 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1996 | PACKET_QEnvironmentHexEncoded, |
1997 | PACKET_QEnvironmentReset, | |
1998 | PACKET_QEnvironmentUnset, | |
936d2992 | 1999 | PACKET_qCRC, |
08388c79 | 2000 | PACKET_qSearch_memory, |
2d717e4f DJ |
2001 | PACKET_vAttach, |
2002 | PACKET_vRun, | |
a6f3e723 | 2003 | PACKET_QStartNoAckMode, |
82f73884 | 2004 | PACKET_vKill, |
4aa995e1 PA |
2005 | PACKET_qXfer_siginfo_read, |
2006 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2007 | PACKET_qAttached, |
4082afcc PA |
2008 | |
2009 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2010 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2011 | |
2012 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2013 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2014 | |
2015 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2016 | PACKET_BreakpointCommands, |
4082afcc PA |
2017 | |
2018 | /* Support for fast tracepoints. */ | |
7a697b8d | 2019 | PACKET_FastTracepoints, |
4082afcc PA |
2020 | |
2021 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2022 | PACKET_StaticTracepoints, |
4082afcc PA |
2023 | |
2024 | /* Support for installing tracepoints while a trace experiment is | |
2025 | running. */ | |
1e4d1764 | 2026 | PACKET_InstallInTrace, |
4082afcc | 2027 | |
40ab02ce MS |
2028 | PACKET_bc, |
2029 | PACKET_bs, | |
409873ef | 2030 | PACKET_TracepointSource, |
d914c394 | 2031 | PACKET_QAllow, |
78d85199 | 2032 | PACKET_qXfer_fdpic, |
03583c20 | 2033 | PACKET_QDisableRandomization, |
d1feda86 | 2034 | PACKET_QAgent, |
f6f899bf | 2035 | PACKET_QTBuffer_size, |
9accd112 MM |
2036 | PACKET_Qbtrace_off, |
2037 | PACKET_Qbtrace_bts, | |
b20a6524 | 2038 | PACKET_Qbtrace_pt, |
9accd112 | 2039 | PACKET_qXfer_btrace, |
4082afcc PA |
2040 | |
2041 | /* Support for the QNonStop packet. */ | |
2042 | PACKET_QNonStop, | |
2043 | ||
65706a29 PA |
2044 | /* Support for the QThreadEvents packet. */ |
2045 | PACKET_QThreadEvents, | |
2046 | ||
4082afcc PA |
2047 | /* Support for multi-process extensions. */ |
2048 | PACKET_multiprocess_feature, | |
2049 | ||
2050 | /* Support for enabling and disabling tracepoints while a trace | |
2051 | experiment is running. */ | |
2052 | PACKET_EnableDisableTracepoints_feature, | |
2053 | ||
2054 | /* Support for collecting strings using the tracenz bytecode. */ | |
2055 | PACKET_tracenz_feature, | |
2056 | ||
2057 | /* Support for continuing to run a trace experiment while GDB is | |
2058 | disconnected. */ | |
2059 | PACKET_DisconnectedTracing_feature, | |
2060 | ||
2061 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2062 | PACKET_augmented_libraries_svr4_read_feature, | |
2063 | ||
f4abbc16 MM |
2064 | /* Support for the qXfer:btrace-conf:read packet. */ |
2065 | PACKET_qXfer_btrace_conf, | |
2066 | ||
d33501a5 MM |
2067 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2068 | PACKET_Qbtrace_conf_bts_size, | |
2069 | ||
f7e6eed5 PA |
2070 | /* Support for swbreak+ feature. */ |
2071 | PACKET_swbreak_feature, | |
2072 | ||
2073 | /* Support for hwbreak+ feature. */ | |
2074 | PACKET_hwbreak_feature, | |
2075 | ||
89245bc0 DB |
2076 | /* Support for fork events. */ |
2077 | PACKET_fork_event_feature, | |
2078 | ||
2079 | /* Support for vfork events. */ | |
2080 | PACKET_vfork_event_feature, | |
2081 | ||
b20a6524 MM |
2082 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2083 | PACKET_Qbtrace_conf_pt_size, | |
2084 | ||
94585166 DB |
2085 | /* Support for exec events. */ |
2086 | PACKET_exec_event_feature, | |
2087 | ||
750ce8d1 YQ |
2088 | /* Support for query supported vCont actions. */ |
2089 | PACKET_vContSupported, | |
2090 | ||
de979965 PA |
2091 | /* Support remote CTRL-C. */ |
2092 | PACKET_vCtrlC, | |
2093 | ||
f2faf941 PA |
2094 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2095 | PACKET_no_resumed, | |
2096 | ||
444abaca DJ |
2097 | PACKET_MAX |
2098 | }; | |
506fb367 | 2099 | |
5b6d1e4f PA |
2100 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2101 | assuming all remote targets are the same server (thus all support | |
2102 | the same packets). */ | |
444abaca | 2103 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2104 | |
f7e6eed5 PA |
2105 | /* Returns the packet's corresponding "set remote foo-packet" command |
2106 | state. See struct packet_config for more details. */ | |
2107 | ||
2108 | static enum auto_boolean | |
2109 | packet_set_cmd_state (int packet) | |
2110 | { | |
2111 | return remote_protocol_packets[packet].detect; | |
2112 | } | |
2113 | ||
4082afcc PA |
2114 | /* Returns whether a given packet or feature is supported. This takes |
2115 | into account the state of the corresponding "set remote foo-packet" | |
2116 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2117 | |
4082afcc PA |
2118 | static enum packet_support |
2119 | packet_config_support (struct packet_config *config) | |
2120 | { | |
2121 | switch (config->detect) | |
444abaca | 2122 | { |
4082afcc PA |
2123 | case AUTO_BOOLEAN_TRUE: |
2124 | return PACKET_ENABLE; | |
2125 | case AUTO_BOOLEAN_FALSE: | |
2126 | return PACKET_DISABLE; | |
2127 | case AUTO_BOOLEAN_AUTO: | |
2128 | return config->support; | |
2129 | default: | |
2130 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2131 | } |
4082afcc PA |
2132 | } |
2133 | ||
2134 | /* Same as packet_config_support, but takes the packet's enum value as | |
2135 | argument. */ | |
2136 | ||
2137 | static enum packet_support | |
2138 | packet_support (int packet) | |
2139 | { | |
2140 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2141 | ||
2142 | return packet_config_support (config); | |
dc8acb97 MS |
2143 | } |
2144 | ||
5a2468f5 | 2145 | static void |
444abaca DJ |
2146 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2147 | struct cmd_list_element *c, | |
2148 | const char *value) | |
5a2468f5 | 2149 | { |
444abaca | 2150 | struct packet_config *packet; |
5a2468f5 | 2151 | |
444abaca DJ |
2152 | for (packet = remote_protocol_packets; |
2153 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2154 | packet++) | |
2155 | { | |
2156 | if (&packet->detect == c->var) | |
2157 | { | |
2158 | show_packet_config_cmd (packet); | |
2159 | return; | |
2160 | } | |
2161 | } | |
9b20d036 | 2162 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2163 | c->name); |
5a2468f5 JM |
2164 | } |
2165 | ||
d471ea57 AC |
2166 | /* Should we try one of the 'Z' requests? */ |
2167 | ||
2168 | enum Z_packet_type | |
2169 | { | |
2170 | Z_PACKET_SOFTWARE_BP, | |
2171 | Z_PACKET_HARDWARE_BP, | |
2172 | Z_PACKET_WRITE_WP, | |
2173 | Z_PACKET_READ_WP, | |
2174 | Z_PACKET_ACCESS_WP, | |
2175 | NR_Z_PACKET_TYPES | |
2176 | }; | |
96baa820 | 2177 | |
d471ea57 | 2178 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2179 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2180 | |
7f19b9a2 | 2181 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2182 | |
2183 | static void | |
eb4c3f4a | 2184 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2185 | struct cmd_list_element *c) |
96baa820 | 2186 | { |
d471ea57 | 2187 | int i; |
a744cf53 | 2188 | |
d471ea57 | 2189 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2190 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2191 | } |
2192 | ||
2193 | static void | |
08546159 AC |
2194 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2195 | struct cmd_list_element *c, | |
2196 | const char *value) | |
96baa820 | 2197 | { |
d471ea57 | 2198 | int i; |
a744cf53 | 2199 | |
d471ea57 AC |
2200 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2201 | { | |
444abaca | 2202 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2203 | } |
96baa820 JM |
2204 | } |
2205 | ||
4082afcc PA |
2206 | /* Returns true if the multi-process extensions are in effect. */ |
2207 | ||
2208 | static int | |
2209 | remote_multi_process_p (struct remote_state *rs) | |
2210 | { | |
2211 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2212 | } | |
2213 | ||
de0d863e DB |
2214 | /* Returns true if fork events are supported. */ |
2215 | ||
2216 | static int | |
2217 | remote_fork_event_p (struct remote_state *rs) | |
2218 | { | |
2219 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2220 | } | |
2221 | ||
c269dbdb DB |
2222 | /* Returns true if vfork events are supported. */ |
2223 | ||
2224 | static int | |
2225 | remote_vfork_event_p (struct remote_state *rs) | |
2226 | { | |
2227 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2228 | } | |
2229 | ||
d46addbb DB |
2230 | /* Returns true if exec events are supported. */ |
2231 | ||
2232 | static int | |
2233 | remote_exec_event_p (struct remote_state *rs) | |
2234 | { | |
2235 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2236 | } | |
2237 | ||
cbb8991c DB |
2238 | /* Insert fork catchpoint target routine. If fork events are enabled |
2239 | then return success, nothing more to do. */ | |
2240 | ||
f6ac5f3d PA |
2241 | int |
2242 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2243 | { |
2244 | struct remote_state *rs = get_remote_state (); | |
2245 | ||
2246 | return !remote_fork_event_p (rs); | |
2247 | } | |
2248 | ||
2249 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2250 | return success. */ | |
2251 | ||
f6ac5f3d PA |
2252 | int |
2253 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2254 | { |
2255 | return 0; | |
2256 | } | |
2257 | ||
2258 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2259 | then return success, nothing more to do. */ | |
2260 | ||
f6ac5f3d PA |
2261 | int |
2262 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2263 | { |
2264 | struct remote_state *rs = get_remote_state (); | |
2265 | ||
2266 | return !remote_vfork_event_p (rs); | |
2267 | } | |
2268 | ||
2269 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2270 | return success. */ | |
2271 | ||
f6ac5f3d PA |
2272 | int |
2273 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2274 | { |
2275 | return 0; | |
2276 | } | |
2277 | ||
d46addbb DB |
2278 | /* Insert exec catchpoint target routine. If exec events are |
2279 | enabled, just return success. */ | |
2280 | ||
f6ac5f3d PA |
2281 | int |
2282 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2283 | { |
2284 | struct remote_state *rs = get_remote_state (); | |
2285 | ||
2286 | return !remote_exec_event_p (rs); | |
2287 | } | |
2288 | ||
2289 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2290 | return success. */ | |
2291 | ||
f6ac5f3d PA |
2292 | int |
2293 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2294 | { |
2295 | return 0; | |
2296 | } | |
2297 | ||
c906108c SS |
2298 | \f |
2299 | ||
ffdd69cf TT |
2300 | /* Take advantage of the fact that the TID field is not used, to tag |
2301 | special ptids with it set to != 0. */ | |
2302 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2303 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2304 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2305 | |
0b16c5cf PA |
2306 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2307 | detach instead of killing it when bailing out). */ | |
2308 | ||
6b8edb51 PA |
2309 | int |
2310 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2311 | { |
2312 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2313 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2314 | |
4082afcc | 2315 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2316 | return 0; |
2317 | ||
2318 | if (remote_multi_process_p (rs)) | |
8d64371b | 2319 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2320 | else |
8d64371b | 2321 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2322 | |
2323 | putpkt (rs->buf); | |
8d64371b | 2324 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2325 | |
2326 | switch (packet_ok (rs->buf, | |
1554e9be | 2327 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2328 | { |
2329 | case PACKET_OK: | |
8d64371b | 2330 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2331 | return 1; |
2332 | break; | |
2333 | case PACKET_ERROR: | |
8d64371b | 2334 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2335 | break; |
2336 | case PACKET_UNKNOWN: | |
2337 | break; | |
2338 | } | |
2339 | ||
2340 | return 0; | |
2341 | } | |
2342 | ||
49c62f2e PA |
2343 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2344 | has been invented by GDB, instead of reported by the target. Since | |
2345 | we can be connected to a remote system before before knowing about | |
2346 | any inferior, mark the target with execution when we find the first | |
2347 | inferior. If ATTACHED is 1, then we had just attached to this | |
2348 | inferior. If it is 0, then we just created this inferior. If it | |
2349 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2350 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2351 | attempt to open this inferior's executable as the main executable | |
2352 | if no main executable is open already. */ | |
1941c569 | 2353 | |
6b8edb51 | 2354 | inferior * |
9ab8741a | 2355 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2356 | int try_open_exec) |
1941c569 | 2357 | { |
1941c569 PA |
2358 | struct inferior *inf; |
2359 | ||
0b16c5cf PA |
2360 | /* Check whether this process we're learning about is to be |
2361 | considered attached, or if is to be considered to have been | |
2362 | spawned by the stub. */ | |
2363 | if (attached == -1) | |
2364 | attached = remote_query_attached (pid); | |
2365 | ||
f5656ead | 2366 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2367 | { |
2368 | /* If the target shares code across all inferiors, then every | |
2369 | attach adds a new inferior. */ | |
2370 | inf = add_inferior (pid); | |
2371 | ||
2372 | /* ... and every inferior is bound to the same program space. | |
2373 | However, each inferior may still have its own address | |
2374 | space. */ | |
2375 | inf->aspace = maybe_new_address_space (); | |
2376 | inf->pspace = current_program_space; | |
2377 | } | |
2378 | else | |
2379 | { | |
2380 | /* In the traditional debugging scenario, there's a 1-1 match | |
2381 | between program/address spaces. We simply bind the inferior | |
2382 | to the program space's address space. */ | |
2383 | inf = current_inferior (); | |
78f2c40a PA |
2384 | |
2385 | /* However, if the current inferior is already bound to a | |
2386 | process, find some other empty inferior. */ | |
2387 | if (inf->pid != 0) | |
2388 | { | |
2389 | inf = nullptr; | |
2390 | for (inferior *it : all_inferiors ()) | |
2391 | if (it->pid == 0) | |
2392 | { | |
2393 | inf = it; | |
2394 | break; | |
2395 | } | |
2396 | } | |
2397 | if (inf == nullptr) | |
2398 | { | |
2399 | /* Since all inferiors were already bound to a process, add | |
2400 | a new inferior. */ | |
2401 | inf = add_inferior_with_spaces (); | |
2402 | } | |
2403 | switch_to_inferior_no_thread (inf); | |
5b6d1e4f | 2404 | push_target (this); |
6c95b8df PA |
2405 | inferior_appeared (inf, pid); |
2406 | } | |
1941c569 | 2407 | |
0b16c5cf | 2408 | inf->attach_flag = attached; |
49c62f2e | 2409 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2410 | |
1b6e6f5c GB |
2411 | /* If no main executable is currently open then attempt to |
2412 | open the file that was executed to create this inferior. */ | |
835205d0 | 2413 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2414 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2415 | |
a2fedca9 PW |
2416 | /* Check for exec file mismatch, and let the user solve it. */ |
2417 | validate_exec_file (1); | |
2418 | ||
1941c569 PA |
2419 | return inf; |
2420 | } | |
2421 | ||
7aabaf9d | 2422 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2423 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2424 | ptid_t ptid); | |
85ad3aaf | 2425 | |
1941c569 PA |
2426 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2427 | according to RUNNING. */ | |
2428 | ||
00431a78 | 2429 | thread_info * |
6b8edb51 | 2430 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2431 | { |
b7ea362b | 2432 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2433 | struct thread_info *thread; |
b7ea362b PA |
2434 | |
2435 | /* GDB historically didn't pull threads in the initial connection | |
2436 | setup. If the remote target doesn't even have a concept of | |
2437 | threads (e.g., a bare-metal target), even if internally we | |
2438 | consider that a single-threaded target, mentioning a new thread | |
2439 | might be confusing to the user. Be silent then, preserving the | |
2440 | age old behavior. */ | |
2441 | if (rs->starting_up) | |
5b6d1e4f | 2442 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2443 | else |
5b6d1e4f | 2444 | thread = add_thread (this, ptid); |
1941c569 | 2445 | |
7aabaf9d | 2446 | get_remote_thread_info (thread)->vcont_resumed = executing; |
5b6d1e4f PA |
2447 | set_executing (this, ptid, executing); |
2448 | set_running (this, ptid, running); | |
00431a78 PA |
2449 | |
2450 | return thread; | |
1941c569 PA |
2451 | } |
2452 | ||
2453 | /* Come here when we learn about a thread id from the remote target. | |
2454 | It may be the first time we hear about such thread, so take the | |
2455 | opportunity to add it to GDB's thread list. In case this is the | |
2456 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2457 | GDB's inferior list as well. EXECUTING indicates whether the |
2458 | thread is (internally) executing or stopped. */ | |
1941c569 | 2459 | |
6b8edb51 PA |
2460 | void |
2461 | remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) | |
1941c569 | 2462 | { |
0d5b594f PA |
2463 | /* In non-stop mode, we assume new found threads are (externally) |
2464 | running until proven otherwise with a stop reply. In all-stop, | |
2465 | we can only get here if all threads are stopped. */ | |
2466 | int running = target_is_non_stop_p () ? 1 : 0; | |
2467 | ||
c906108c SS |
2468 | /* If this is a new thread, add it to GDB's thread list. |
2469 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2470 | |
5b6d1e4f | 2471 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2472 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2473 | { |
2474 | /* We're seeing an event on a thread id we knew had exited. | |
2475 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2476 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2477 | return; |
2478 | } | |
2479 | ||
5b6d1e4f | 2480 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2481 | { |
1941c569 | 2482 | struct inferior *inf = NULL; |
e99b03dc | 2483 | int pid = currthread.pid (); |
1941c569 | 2484 | |
0e998d96 | 2485 | if (inferior_ptid.is_pid () |
e99b03dc | 2486 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2487 | { |
2488 | /* inferior_ptid has no thread member yet. This can happen | |
2489 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2490 | stub doesn't support qC. This is the first stop reported | |
2491 | after an attach, so this is the main thread. Update the | |
2492 | ptid in the thread list. */ | |
5b6d1e4f PA |
2493 | if (in_thread_list (this, ptid_t (pid))) |
2494 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2495 | else |
2496 | { | |
0ac55310 PA |
2497 | thread_info *thr |
2498 | = remote_add_thread (currthread, running, executing); | |
2499 | switch_to_thread (thr); | |
bad34192 | 2500 | } |
dc146f7c | 2501 | return; |
c0a2216e | 2502 | } |
82f73884 | 2503 | |
d7e15655 | 2504 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2505 | { |
2506 | /* inferior_ptid is not set yet. This can happen with the | |
2507 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2508 | doesn't support qC. This is the first stop reported | |
2509 | after an attach, so this is the main thread. Update the | |
2510 | ptid in the thread list. */ | |
5b6d1e4f | 2511 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2512 | return; |
c0a2216e | 2513 | } |
82f73884 | 2514 | |
29c87f7f PA |
2515 | /* When connecting to a target remote, or to a target |
2516 | extended-remote which already was debugging an inferior, we | |
2517 | may not know about it yet. Add it before adding its child | |
2518 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2519 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2520 | { |
2521 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2522 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2523 | |
2524 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2525 | currthread.pid (), -1, 1); |
49c62f2e | 2526 | } |
29c87f7f | 2527 | |
82f73884 | 2528 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2529 | thread_info *new_thr |
2530 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2531 | |
2532 | /* If we found a new inferior, let the common code do whatever | |
2533 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2534 | breakpoints), unless we're just setting up an all-stop |
2535 | connection. */ | |
1941c569 | 2536 | if (inf != NULL) |
b7ea362b PA |
2537 | { |
2538 | struct remote_state *rs = get_remote_state (); | |
2539 | ||
6efcd9a8 | 2540 | if (!rs->starting_up) |
00431a78 | 2541 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2542 | } |
c0a2216e | 2543 | } |
c906108c SS |
2544 | } |
2545 | ||
85ad3aaf | 2546 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2547 | |
7aabaf9d SM |
2548 | static remote_thread_info * |
2549 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2550 | { |
85ad3aaf | 2551 | gdb_assert (thread != NULL); |
dc146f7c | 2552 | |
85ad3aaf | 2553 | if (thread->priv == NULL) |
7aabaf9d | 2554 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2555 | |
7aabaf9d | 2556 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2557 | } |
2558 | ||
5b6d1e4f PA |
2559 | /* Return PTID's private thread data, creating it if necessary. */ |
2560 | ||
7aabaf9d | 2561 | static remote_thread_info * |
5b6d1e4f | 2562 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2563 | { |
5b6d1e4f | 2564 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2565 | return get_remote_thread_info (thr); |
dc146f7c VP |
2566 | } |
2567 | ||
74531fed PA |
2568 | /* Call this function as a result of |
2569 | 1) A halt indication (T packet) containing a thread id | |
2570 | 2) A direct query of currthread | |
0df8b418 | 2571 | 3) Successful execution of set thread */ |
74531fed PA |
2572 | |
2573 | static void | |
47f8a51d | 2574 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2575 | { |
47f8a51d | 2576 | rs->general_thread = currthread; |
74531fed PA |
2577 | } |
2578 | ||
89be2091 DJ |
2579 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2580 | it can simply pass through to the inferior without reporting. */ | |
2581 | ||
f6ac5f3d | 2582 | void |
adc6a863 | 2583 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2584 | { |
4082afcc | 2585 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2586 | { |
2587 | char *pass_packet, *p; | |
adc6a863 | 2588 | int count = 0; |
747dc59d | 2589 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2590 | |
adc6a863 PA |
2591 | gdb_assert (pass_signals.size () < 256); |
2592 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2593 | { |
2455069d | 2594 | if (pass_signals[i]) |
89be2091 DJ |
2595 | count++; |
2596 | } | |
224c3ddb | 2597 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2598 | strcpy (pass_packet, "QPassSignals:"); |
2599 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2600 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2601 | { |
2455069d | 2602 | if (pass_signals[i]) |
89be2091 DJ |
2603 | { |
2604 | if (i >= 16) | |
2605 | *p++ = tohex (i >> 4); | |
2606 | *p++ = tohex (i & 15); | |
2607 | if (count) | |
2608 | *p++ = ';'; | |
2609 | else | |
2610 | break; | |
2611 | count--; | |
2612 | } | |
2613 | } | |
2614 | *p = 0; | |
747dc59d | 2615 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2616 | { |
89be2091 | 2617 | putpkt (pass_packet); |
8d64371b | 2618 | getpkt (&rs->buf, 0); |
8dc5b319 | 2619 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
84d53fa9 | 2620 | xfree (rs->last_pass_packet); |
747dc59d | 2621 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2622 | } |
2623 | else | |
2624 | xfree (pass_packet); | |
2625 | } | |
2626 | } | |
2627 | ||
82075af2 JS |
2628 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2629 | to report syscalls to GDB. */ | |
2630 | ||
f6ac5f3d PA |
2631 | int |
2632 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2633 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2634 | { |
b80406ac | 2635 | const char *catch_packet; |
82075af2 JS |
2636 | enum packet_result result; |
2637 | int n_sysno = 0; | |
2638 | ||
2639 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2640 | { | |
2641 | /* Not supported. */ | |
2642 | return 1; | |
2643 | } | |
2644 | ||
649a140c | 2645 | if (needed && any_count == 0) |
82075af2 | 2646 | { |
649a140c PA |
2647 | /* Count how many syscalls are to be caught. */ |
2648 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2649 | { |
649a140c | 2650 | if (syscall_counts[i] != 0) |
82075af2 JS |
2651 | n_sysno++; |
2652 | } | |
2653 | } | |
2654 | ||
2655 | if (remote_debug) | |
2656 | { | |
2657 | fprintf_unfiltered (gdb_stdlog, | |
2658 | "remote_set_syscall_catchpoint " | |
2659 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2660 | pid, needed, any_count, n_sysno); | |
2661 | } | |
2662 | ||
1b81856f | 2663 | std::string built_packet; |
82075af2 JS |
2664 | if (needed) |
2665 | { | |
2666 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2667 | characters for a sysno. If the resulting packet size is too | |
2668 | big, fallback on the non-selective packet. */ | |
2669 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2670 | built_packet.reserve (maxpktsz); |
2671 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2672 | if (any_count == 0) |
82075af2 | 2673 | { |
649a140c PA |
2674 | /* Add in each syscall to be caught. */ |
2675 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2676 | { |
649a140c PA |
2677 | if (syscall_counts[i] != 0) |
2678 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2679 | } |
2680 | } | |
1b81856f | 2681 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2682 | { |
2683 | /* catch_packet too big. Fallback to less efficient | |
2684 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2685 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2686 | } |
b80406ac | 2687 | else |
1b81856f | 2688 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2689 | } |
2690 | else | |
b80406ac | 2691 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2692 | |
b80406ac | 2693 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2694 | |
b80406ac | 2695 | putpkt (catch_packet); |
8d64371b | 2696 | getpkt (&rs->buf, 0); |
b80406ac TT |
2697 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2698 | if (result == PACKET_OK) | |
2699 | return 0; | |
2700 | else | |
2701 | return -1; | |
82075af2 JS |
2702 | } |
2703 | ||
9b224c5e PA |
2704 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2705 | signals it should pass through to the inferior when detaching. */ | |
2706 | ||
f6ac5f3d | 2707 | void |
adc6a863 | 2708 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2709 | { |
4082afcc | 2710 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2711 | { |
2712 | char *packet, *p; | |
adc6a863 | 2713 | int count = 0; |
5e4a05c4 | 2714 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2715 | |
adc6a863 PA |
2716 | gdb_assert (signals.size () < 256); |
2717 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2718 | { |
2719 | if (signals[i]) | |
2720 | count++; | |
2721 | } | |
224c3ddb | 2722 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2723 | strcpy (packet, "QProgramSignals:"); |
2724 | p = packet + strlen (packet); | |
adc6a863 | 2725 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2726 | { |
2727 | if (signal_pass_state (i)) | |
2728 | { | |
2729 | if (i >= 16) | |
2730 | *p++ = tohex (i >> 4); | |
2731 | *p++ = tohex (i & 15); | |
2732 | if (count) | |
2733 | *p++ = ';'; | |
2734 | else | |
2735 | break; | |
2736 | count--; | |
2737 | } | |
2738 | } | |
2739 | *p = 0; | |
5e4a05c4 TT |
2740 | if (!rs->last_program_signals_packet |
2741 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2742 | { |
9b224c5e | 2743 | putpkt (packet); |
8d64371b | 2744 | getpkt (&rs->buf, 0); |
8dc5b319 | 2745 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2746 | xfree (rs->last_program_signals_packet); |
2747 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2748 | } |
2749 | else | |
2750 | xfree (packet); | |
2751 | } | |
2752 | } | |
2753 | ||
79d7f229 PA |
2754 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2755 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2756 | thread. If GEN is set, set the general thread, if not, then set | |
2757 | the step/continue thread. */ | |
6b8edb51 PA |
2758 | void |
2759 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2760 | { |
d01949b6 | 2761 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2762 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2763 | char *buf = rs->buf.data (); |
2764 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2765 | |
d7e15655 | 2766 | if (state == ptid) |
c906108c SS |
2767 | return; |
2768 | ||
79d7f229 PA |
2769 | *buf++ = 'H'; |
2770 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2771 | if (ptid == magic_null_ptid) |
79d7f229 | 2772 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2773 | else if (ptid == any_thread_ptid) |
79d7f229 | 2774 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2775 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2776 | xsnprintf (buf, endbuf - buf, "-1"); |
2777 | else | |
82f73884 | 2778 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2779 | putpkt (rs->buf); |
8d64371b | 2780 | getpkt (&rs->buf, 0); |
c906108c | 2781 | if (gen) |
47f8a51d | 2782 | rs->general_thread = ptid; |
c906108c | 2783 | else |
47f8a51d | 2784 | rs->continue_thread = ptid; |
c906108c | 2785 | } |
79d7f229 | 2786 | |
6b8edb51 PA |
2787 | void |
2788 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2789 | { |
2790 | set_thread (ptid, 1); | |
2791 | } | |
2792 | ||
6b8edb51 PA |
2793 | void |
2794 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2795 | { |
2796 | set_thread (ptid, 0); | |
2797 | } | |
2798 | ||
3c9c4b83 PA |
2799 | /* Change the remote current process. Which thread within the process |
2800 | ends up selected isn't important, as long as it is the same process | |
2801 | as what INFERIOR_PTID points to. | |
2802 | ||
2803 | This comes from that fact that there is no explicit notion of | |
2804 | "selected process" in the protocol. The selected process for | |
2805 | general operations is the process the selected general thread | |
2806 | belongs to. */ | |
2807 | ||
6b8edb51 PA |
2808 | void |
2809 | remote_target::set_general_process () | |
3c9c4b83 PA |
2810 | { |
2811 | struct remote_state *rs = get_remote_state (); | |
2812 | ||
2813 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2814 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2815 | return; |
2816 | ||
2817 | /* We only need to change the remote current thread if it's pointing | |
2818 | at some other process. */ | |
e99b03dc | 2819 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2820 | set_general_thread (inferior_ptid); |
2821 | } | |
2822 | ||
c906108c | 2823 | \f |
7d1a114c PA |
2824 | /* Return nonzero if this is the main thread that we made up ourselves |
2825 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2826 | |
2827 | static int | |
f6ac5f3d | 2828 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2829 | { |
d7e15655 | 2830 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2831 | /* The main thread is always alive. */ |
2832 | return 1; | |
2833 | ||
e38504b3 | 2834 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2835 | /* The main thread is always alive. This can happen after a |
2836 | vAttach, if the remote side doesn't support | |
2837 | multi-threading. */ | |
2838 | return 1; | |
2839 | ||
7d1a114c PA |
2840 | return 0; |
2841 | } | |
2842 | ||
2843 | /* Return nonzero if the thread PTID is still alive on the remote | |
2844 | system. */ | |
2845 | ||
57810aa7 | 2846 | bool |
f6ac5f3d | 2847 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2848 | { |
2849 | struct remote_state *rs = get_remote_state (); | |
2850 | char *p, *endp; | |
2851 | ||
2852 | /* Check if this is a thread that we made up ourselves to model | |
2853 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2854 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2855 | return 1; |
2856 | ||
8d64371b TT |
2857 | p = rs->buf.data (); |
2858 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2859 | |
2860 | *p++ = 'T'; | |
2861 | write_ptid (p, endp, ptid); | |
2862 | ||
2e9f7625 | 2863 | putpkt (rs->buf); |
8d64371b | 2864 | getpkt (&rs->buf, 0); |
2e9f7625 | 2865 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2866 | } |
2867 | ||
79efa585 SM |
2868 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2869 | The thread_info object owns the memory for the name. */ | |
2870 | ||
f6ac5f3d PA |
2871 | const char * |
2872 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2873 | { |
2874 | if (info->priv != NULL) | |
a9334058 SM |
2875 | { |
2876 | const std::string &name = get_remote_thread_info (info)->name; | |
2877 | return !name.empty () ? name.c_str () : NULL; | |
2878 | } | |
79efa585 SM |
2879 | |
2880 | return NULL; | |
2881 | } | |
2882 | ||
c906108c SS |
2883 | /* About these extended threadlist and threadinfo packets. They are |
2884 | variable length packets but, the fields within them are often fixed | |
30baf67b | 2885 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
2886 | remote protocol in general. There is a matching unit test module |
2887 | in libstub. */ | |
2888 | ||
23860348 | 2889 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2890 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2891 | changable. */ |
cce74817 JM |
2892 | |
2893 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2894 | Plan to fix this. */ |
cce74817 | 2895 | |
23860348 | 2896 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2897 | |
9d1f7ab2 | 2898 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2899 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2900 | |
2901 | struct gdb_ext_thread_info | |
c5aa993b | 2902 | { |
23860348 | 2903 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2904 | int active; /* Has state interesting to GDB? |
23860348 | 2905 | regs, stack. */ |
2bc416ba | 2906 | char display[256]; /* Brief state display, name, |
cedea757 | 2907 | blocked/suspended. */ |
23860348 | 2908 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2909 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2910 | whatever. */ |
c5aa993b | 2911 | }; |
cce74817 JM |
2912 | |
2913 | /* The volume of remote transfers can be limited by submitting | |
2914 | a mask containing bits specifying the desired information. | |
2915 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2916 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2917 | |
2918 | #define TAG_THREADID 1 | |
2919 | #define TAG_EXISTS 2 | |
2920 | #define TAG_DISPLAY 4 | |
2921 | #define TAG_THREADNAME 8 | |
c5aa993b | 2922 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2923 | |
23860348 | 2924 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2925 | |
a14ed312 | 2926 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2927 | |
a14ed312 | 2928 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2929 | |
a14ed312 | 2930 | static char *pack_int (char *buf, int value); |
cce74817 | 2931 | |
a14ed312 | 2932 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2933 | |
a14ed312 | 2934 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2935 | |
23860348 | 2936 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2937 | |
23860348 | 2938 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2939 | |
23860348 | 2940 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2941 | |
23860348 | 2942 | static int threadref_to_int (threadref *ref); |
cce74817 | 2943 | |
23860348 | 2944 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2945 | |
23860348 | 2946 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2947 | |
2bc416ba | 2948 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2949 | threadref *id); |
cce74817 | 2950 | |
a14ed312 KB |
2951 | static char *pack_threadlist_request (char *pkt, int startflag, |
2952 | int threadcount, | |
23860348 | 2953 | threadref *nextthread); |
cce74817 | 2954 | |
23860348 | 2955 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2956 | |
82f73884 PA |
2957 | |
2958 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2959 | buffer we're allowed to write to. Returns | |
2960 | BUF+CHARACTERS_WRITTEN. */ | |
2961 | ||
6b8edb51 PA |
2962 | char * |
2963 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
2964 | { |
2965 | int pid, tid; | |
2966 | struct remote_state *rs = get_remote_state (); | |
2967 | ||
2968 | if (remote_multi_process_p (rs)) | |
2969 | { | |
e99b03dc | 2970 | pid = ptid.pid (); |
82f73884 PA |
2971 | if (pid < 0) |
2972 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2973 | else | |
2974 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2975 | } | |
e38504b3 | 2976 | tid = ptid.lwp (); |
82f73884 PA |
2977 | if (tid < 0) |
2978 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2979 | else | |
2980 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2981 | ||
2982 | return buf; | |
2983 | } | |
2984 | ||
256642e8 PA |
2985 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2986 | last parsed char. Returns null_ptid if no thread id is found, and | |
2987 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2988 | |
2989 | static ptid_t | |
256642e8 | 2990 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2991 | { |
256642e8 PA |
2992 | const char *p = buf; |
2993 | const char *pp; | |
82f73884 | 2994 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2995 | |
2996 | if (*p == 'p') | |
2997 | { | |
2998 | /* Multi-process ptid. */ | |
2999 | pp = unpack_varlen_hex (p + 1, &pid); | |
3000 | if (*pp != '.') | |
b37520b6 | 3001 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3002 | |
3003 | p = pp; | |
3004 | pp = unpack_varlen_hex (p + 1, &tid); | |
3005 | if (obuf) | |
3006 | *obuf = pp; | |
fd79271b | 3007 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3008 | } |
3009 | ||
3010 | /* No multi-process. Just a tid. */ | |
3011 | pp = unpack_varlen_hex (p, &tid); | |
3012 | ||
c9f35b34 KB |
3013 | /* Return null_ptid when no thread id is found. */ |
3014 | if (p == pp) | |
3015 | { | |
3016 | if (obuf) | |
3017 | *obuf = pp; | |
3018 | return null_ptid; | |
3019 | } | |
3020 | ||
82f73884 | 3021 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
3022 | what's in inferior_ptid, unless it's null at this point. If so, |
3023 | then since there's no way to know the pid of the reported | |
3024 | threads, use the magic number. */ | |
d7e15655 | 3025 | if (inferior_ptid == null_ptid) |
e99b03dc | 3026 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3027 | else |
e99b03dc | 3028 | pid = inferior_ptid.pid (); |
82f73884 PA |
3029 | |
3030 | if (obuf) | |
3031 | *obuf = pp; | |
fd79271b | 3032 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3033 | } |
3034 | ||
c906108c | 3035 | static int |
fba45db2 | 3036 | stubhex (int ch) |
c906108c SS |
3037 | { |
3038 | if (ch >= 'a' && ch <= 'f') | |
3039 | return ch - 'a' + 10; | |
3040 | if (ch >= '0' && ch <= '9') | |
3041 | return ch - '0'; | |
3042 | if (ch >= 'A' && ch <= 'F') | |
3043 | return ch - 'A' + 10; | |
3044 | return -1; | |
3045 | } | |
3046 | ||
3047 | static int | |
fba45db2 | 3048 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
3049 | { |
3050 | int nibble; | |
3051 | int retval = 0; | |
3052 | ||
3053 | while (fieldlength) | |
3054 | { | |
3055 | nibble = stubhex (*buff++); | |
3056 | retval |= nibble; | |
3057 | fieldlength--; | |
3058 | if (fieldlength) | |
3059 | retval = retval << 4; | |
3060 | } | |
3061 | return retval; | |
3062 | } | |
3063 | ||
c906108c | 3064 | static char * |
fba45db2 | 3065 | unpack_nibble (char *buf, int *val) |
c906108c | 3066 | { |
b7589f7d | 3067 | *val = fromhex (*buf++); |
c906108c SS |
3068 | return buf; |
3069 | } | |
3070 | ||
c906108c | 3071 | static char * |
fba45db2 | 3072 | unpack_byte (char *buf, int *value) |
c906108c SS |
3073 | { |
3074 | *value = stub_unpack_int (buf, 2); | |
3075 | return buf + 2; | |
3076 | } | |
3077 | ||
3078 | static char * | |
fba45db2 | 3079 | pack_int (char *buf, int value) |
c906108c SS |
3080 | { |
3081 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3082 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3083 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3084 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3085 | return buf; | |
3086 | } | |
3087 | ||
3088 | static char * | |
fba45db2 | 3089 | unpack_int (char *buf, int *value) |
c906108c SS |
3090 | { |
3091 | *value = stub_unpack_int (buf, 8); | |
3092 | return buf + 8; | |
3093 | } | |
3094 | ||
23860348 | 3095 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3096 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3097 | |
3098 | static char * | |
fba45db2 | 3099 | pack_string (char *pkt, char *string) |
c906108c SS |
3100 | { |
3101 | char ch; | |
3102 | int len; | |
3103 | ||
3104 | len = strlen (string); | |
3105 | if (len > 200) | |
23860348 | 3106 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3107 | pkt = pack_hex_byte (pkt, len); |
3108 | while (len-- > 0) | |
3109 | { | |
3110 | ch = *string++; | |
3111 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3112 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3113 | *pkt++ = ch; |
3114 | } | |
3115 | return pkt; | |
3116 | } | |
3117 | #endif /* 0 (unused) */ | |
3118 | ||
3119 | static char * | |
fba45db2 | 3120 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
3121 | { |
3122 | while (length--) | |
3123 | *dest++ = *src++; | |
3124 | *dest = '\0'; | |
3125 | return src; | |
3126 | } | |
3127 | ||
3128 | static char * | |
fba45db2 | 3129 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3130 | { |
3131 | char *limit; | |
3132 | unsigned char *altid; | |
3133 | ||
3134 | altid = (unsigned char *) id; | |
3135 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3136 | while (pkt < limit) | |
3137 | pkt = pack_hex_byte (pkt, *altid++); | |
3138 | return pkt; | |
3139 | } | |
3140 | ||
3141 | ||
3142 | static char * | |
fba45db2 | 3143 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
3144 | { |
3145 | char *altref; | |
3146 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
3147 | int x, y; | |
3148 | ||
3149 | altref = (char *) id; | |
3150 | ||
3151 | while (inbuf < limit) | |
3152 | { | |
3153 | x = stubhex (*inbuf++); | |
3154 | y = stubhex (*inbuf++); | |
3155 | *altref++ = (x << 4) | y; | |
3156 | } | |
3157 | return inbuf; | |
3158 | } | |
3159 | ||
3160 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3161 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3162 | to use 64bit thread references internally. This is an adapter |
3163 | function. */ | |
3164 | ||
3165 | void | |
fba45db2 | 3166 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3167 | { |
3168 | unsigned char *scan; | |
3169 | ||
3170 | scan = (unsigned char *) id; | |
3171 | { | |
3172 | int i = 4; | |
3173 | while (i--) | |
3174 | *scan++ = 0; | |
3175 | } | |
3176 | *scan++ = (value >> 24) & 0xff; | |
3177 | *scan++ = (value >> 16) & 0xff; | |
3178 | *scan++ = (value >> 8) & 0xff; | |
3179 | *scan++ = (value & 0xff); | |
3180 | } | |
3181 | ||
3182 | static int | |
fba45db2 | 3183 | threadref_to_int (threadref *ref) |
c906108c SS |
3184 | { |
3185 | int i, value = 0; | |
3186 | unsigned char *scan; | |
3187 | ||
cfd77fa1 | 3188 | scan = *ref; |
c906108c SS |
3189 | scan += 4; |
3190 | i = 4; | |
3191 | while (i-- > 0) | |
3192 | value = (value << 8) | ((*scan++) & 0xff); | |
3193 | return value; | |
3194 | } | |
3195 | ||
3196 | static void | |
fba45db2 | 3197 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3198 | { |
3199 | int i; | |
3200 | unsigned char *csrc, *cdest; | |
3201 | ||
3202 | csrc = (unsigned char *) src; | |
3203 | cdest = (unsigned char *) dest; | |
3204 | i = 8; | |
3205 | while (i--) | |
3206 | *cdest++ = *csrc++; | |
3207 | } | |
3208 | ||
3209 | static int | |
fba45db2 | 3210 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3211 | { |
23860348 | 3212 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3213 | #if 0 |
3214 | unsigned char *srcp, *destp; | |
3215 | int i, result; | |
3216 | srcp = (char *) src; | |
3217 | destp = (char *) dest; | |
3218 | ||
3219 | result = 1; | |
3220 | while (i-- > 0) | |
3221 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3222 | return result; | |
3223 | #endif | |
3224 | return 1; | |
3225 | } | |
3226 | ||
3227 | /* | |
c5aa993b JM |
3228 | threadid:1, # always request threadid |
3229 | context_exists:2, | |
3230 | display:4, | |
3231 | unique_name:8, | |
3232 | more_display:16 | |
3233 | */ | |
c906108c SS |
3234 | |
3235 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3236 | ||
3237 | static char * | |
fba45db2 | 3238 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3239 | { |
23860348 MS |
3240 | *pkt++ = 'q'; /* Info Query */ |
3241 | *pkt++ = 'P'; /* process or thread info */ | |
3242 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3243 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3244 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3245 | return pkt; |
3246 | } | |
3247 | ||
23860348 | 3248 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3249 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3250 | add more fields as time goes by. */ |
c906108c | 3251 | |
23860348 | 3252 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3253 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3254 | fetch registers and its stack? */ |
c5aa993b | 3255 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3256 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3257 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3258 | the process. */ |
c906108c | 3259 | |
6b8edb51 PA |
3260 | int |
3261 | remote_target::remote_unpack_thread_info_response (char *pkt, | |
3262 | threadref *expectedref, | |
3263 | gdb_ext_thread_info *info) | |
c906108c | 3264 | { |
d01949b6 | 3265 | struct remote_state *rs = get_remote_state (); |
c906108c | 3266 | int mask, length; |
cfd77fa1 | 3267 | int tag; |
c906108c | 3268 | threadref ref; |
8d64371b | 3269 | char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3270 | int retval = 1; |
3271 | ||
23860348 | 3272 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3273 | info->active = 0; |
3274 | info->display[0] = '\0'; | |
3275 | info->shortname[0] = '\0'; | |
3276 | info->more_display[0] = '\0'; | |
3277 | ||
23860348 MS |
3278 | /* Assume the characters indicating the packet type have been |
3279 | stripped. */ | |
c906108c SS |
3280 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3281 | pkt = unpack_threadid (pkt, &ref); | |
3282 | ||
3283 | if (mask == 0) | |
8a3fe4f8 | 3284 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3285 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3286 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3287 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3288 | return 0; |
3289 | } | |
3290 | copy_threadref (&info->threadid, &ref); | |
3291 | ||
405feb71 | 3292 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3293 | |
23860348 MS |
3294 | /* Packets are terminated with nulls. */ |
3295 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3296 | { |
3297 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3298 | pkt = unpack_byte (pkt, &length); /* length */ |
3299 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3300 | { |
8a3fe4f8 | 3301 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3302 | retval = 0; |
3303 | break; | |
3304 | } | |
3305 | if (tag == TAG_THREADID) | |
3306 | { | |
3307 | if (length != 16) | |
3308 | { | |
8a3fe4f8 | 3309 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3310 | retval = 0; |
3311 | break; | |
3312 | } | |
3313 | pkt = unpack_threadid (pkt, &ref); | |
3314 | mask = mask & ~TAG_THREADID; | |
3315 | continue; | |
3316 | } | |
3317 | if (tag == TAG_EXISTS) | |
3318 | { | |
3319 | info->active = stub_unpack_int (pkt, length); | |
3320 | pkt += length; | |
3321 | mask = mask & ~(TAG_EXISTS); | |
3322 | if (length > 8) | |
3323 | { | |
8a3fe4f8 | 3324 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3325 | retval = 0; |
3326 | break; | |
3327 | } | |
3328 | continue; | |
3329 | } | |
3330 | if (tag == TAG_THREADNAME) | |
3331 | { | |
3332 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3333 | mask = mask & ~TAG_THREADNAME; | |
3334 | continue; | |
3335 | } | |
3336 | if (tag == TAG_DISPLAY) | |
3337 | { | |
3338 | pkt = unpack_string (pkt, &info->display[0], length); | |
3339 | mask = mask & ~TAG_DISPLAY; | |
3340 | continue; | |
3341 | } | |
3342 | if (tag == TAG_MOREDISPLAY) | |
3343 | { | |
3344 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3345 | mask = mask & ~TAG_MOREDISPLAY; | |
3346 | continue; | |
3347 | } | |
8a3fe4f8 | 3348 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3349 | break; /* Not a tag we know about. */ |
c906108c SS |
3350 | } |
3351 | return retval; | |
3352 | } | |
3353 | ||
6b8edb51 PA |
3354 | int |
3355 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3356 | int fieldset, | |
3357 | gdb_ext_thread_info *info) | |
c906108c | 3358 | { |
d01949b6 | 3359 | struct remote_state *rs = get_remote_state (); |
c906108c | 3360 | int result; |
c906108c | 3361 | |
8d64371b | 3362 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3363 | putpkt (rs->buf); |
8d64371b | 3364 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3365 | |
3366 | if (rs->buf[0] == '\0') | |
3367 | return 0; | |
3368 | ||
8d64371b | 3369 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3370 | threadid, info); |
c906108c SS |
3371 | return result; |
3372 | } | |
3373 | ||
c906108c SS |
3374 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3375 | ||
3376 | static char * | |
fba45db2 KB |
3377 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3378 | threadref *nextthread) | |
c906108c SS |
3379 | { |
3380 | *pkt++ = 'q'; /* info query packet */ | |
3381 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3382 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3383 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3384 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3385 | *pkt = '\0'; | |
3386 | return pkt; | |
3387 | } | |
3388 | ||
3389 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3390 | ||
6b8edb51 PA |
3391 | int |
3392 | remote_target::parse_threadlist_response (char *pkt, int result_limit, | |
3393 | threadref *original_echo, | |
3394 | threadref *resultlist, | |
3395 | int *doneflag) | |
c906108c | 3396 | { |
d01949b6 | 3397 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3398 | char *limit; |
3399 | int count, resultcount, done; | |
3400 | ||
3401 | resultcount = 0; | |
3402 | /* Assume the 'q' and 'M chars have been stripped. */ | |
8d64371b | 3403 | limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3404 | /* done parse past here */ |
c906108c SS |
3405 | pkt = unpack_byte (pkt, &count); /* count field */ |
3406 | pkt = unpack_nibble (pkt, &done); | |
3407 | /* The first threadid is the argument threadid. */ | |
3408 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3409 | while ((count-- > 0) && (pkt < limit)) | |
3410 | { | |
3411 | pkt = unpack_threadid (pkt, resultlist++); | |
3412 | if (resultcount++ >= result_limit) | |
3413 | break; | |
3414 | } | |
3415 | if (doneflag) | |
3416 | *doneflag = done; | |
3417 | return resultcount; | |
3418 | } | |
3419 | ||
6dc54d91 PA |
3420 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3421 | qL packet is not supported, 0 on error and 1 on success. */ | |
3422 | ||
6b8edb51 PA |
3423 | int |
3424 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3425 | int result_limit, int *done, int *result_count, | |
3426 | threadref *threadlist) | |
c906108c | 3427 | { |
d01949b6 | 3428 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3429 | int result = 1; |
3430 | ||
405feb71 | 3431 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3432 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3433 | >= get_remote_packet_size ()) | |
ea9c271d | 3434 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3435 | |
8d64371b TT |
3436 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3437 | nextthread); | |
6d820c5c | 3438 | putpkt (rs->buf); |
8d64371b TT |
3439 | getpkt (&rs->buf, 0); |
3440 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3441 | { |
3442 | /* Packet not supported. */ | |
3443 | return -1; | |
3444 | } | |
3445 | ||
3446 | *result_count = | |
8d64371b | 3447 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3448 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3449 | |
0d031856 | 3450 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3451 | { |
23860348 | 3452 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3453 | /* Possibly, there is a duplicate response. */ |
3454 | /* Possibilities : | |
dda83cd7 SM |
3455 | retransmit immediatly - race conditions |
3456 | retransmit after timeout - yes | |
3457 | exit | |
3458 | wait for packet, then exit | |
c906108c | 3459 | */ |
8a3fe4f8 | 3460 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3461 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3462 | } |
3463 | if (*result_count <= 0) | |
3464 | { | |
3465 | if (*done != 1) | |
3466 | { | |
8a3fe4f8 | 3467 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3468 | result = 0; |
3469 | } | |
3470 | return result; /* break; */ | |
3471 | } | |
3472 | if (*result_count > result_limit) | |
3473 | { | |
3474 | *result_count = 0; | |
8a3fe4f8 | 3475 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3476 | return 0; |
3477 | } | |
3478 | return result; | |
3479 | } | |
3480 | ||
6dc54d91 PA |
3481 | /* Fetch the list of remote threads, with the qL packet, and call |
3482 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3483 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3484 | STEPFUNCTION returns false. If the packet is not supported, | |
3485 | returns -1. */ | |
c906108c | 3486 | |
6b8edb51 PA |
3487 | int |
3488 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3489 | void *context, int looplimit) | |
c906108c | 3490 | { |
0d031856 | 3491 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3492 | int done, i, result_count; |
3493 | int startflag = 1; | |
3494 | int result = 1; | |
3495 | int loopcount = 0; | |
c906108c SS |
3496 | |
3497 | done = 0; | |
3498 | while (!done) | |
3499 | { | |
3500 | if (loopcount++ > looplimit) | |
3501 | { | |
3502 | result = 0; | |
8a3fe4f8 | 3503 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3504 | break; |
3505 | } | |
6dc54d91 PA |
3506 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3507 | MAXTHREADLISTRESULTS, | |
3508 | &done, &result_count, | |
3509 | rs->resultthreadlist); | |
3510 | if (result <= 0) | |
3511 | break; | |
23860348 | 3512 | /* Clear for later iterations. */ |
c906108c SS |
3513 | startflag = 0; |
3514 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3515 | if (result_count >= 1) | |
0d031856 TT |
3516 | copy_threadref (&rs->nextthread, |
3517 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3518 | i = 0; |
3519 | while (result_count--) | |
6dc54d91 PA |
3520 | { |
3521 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3522 | { | |
3523 | result = 0; | |
3524 | break; | |
3525 | } | |
3526 | } | |
c906108c SS |
3527 | } |
3528 | return result; | |
3529 | } | |
3530 | ||
6dc54d91 PA |
3531 | /* A thread found on the remote target. */ |
3532 | ||
21fe1c75 | 3533 | struct thread_item |
6dc54d91 | 3534 | { |
21fe1c75 SM |
3535 | explicit thread_item (ptid_t ptid_) |
3536 | : ptid (ptid_) | |
3537 | {} | |
3538 | ||
3539 | thread_item (thread_item &&other) = default; | |
3540 | thread_item &operator= (thread_item &&other) = default; | |
3541 | ||
3542 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3543 | ||
6dc54d91 PA |
3544 | /* The thread's PTID. */ |
3545 | ptid_t ptid; | |
3546 | ||
21fe1c75 SM |
3547 | /* The thread's extra info. */ |
3548 | std::string extra; | |
6dc54d91 | 3549 | |
21fe1c75 SM |
3550 | /* The thread's name. */ |
3551 | std::string name; | |
79efa585 | 3552 | |
6dc54d91 | 3553 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3554 | int core = -1; |
f6327dcb KB |
3555 | |
3556 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3557 | gdb::byte_vector thread_handle; |
21fe1c75 | 3558 | }; |
6dc54d91 PA |
3559 | |
3560 | /* Context passed around to the various methods listing remote | |
3561 | threads. As new threads are found, they're added to the ITEMS | |
3562 | vector. */ | |
3563 | ||
3564 | struct threads_listing_context | |
3565 | { | |
21fe1c75 SM |
3566 | /* Return true if this object contains an entry for a thread with ptid |
3567 | PTID. */ | |
6dc54d91 | 3568 | |
21fe1c75 SM |
3569 | bool contains_thread (ptid_t ptid) const |
3570 | { | |
3571 | auto match_ptid = [&] (const thread_item &item) | |
3572 | { | |
3573 | return item.ptid == ptid; | |
3574 | }; | |
80134cf5 | 3575 | |
21fe1c75 SM |
3576 | auto it = std::find_if (this->items.begin (), |
3577 | this->items.end (), | |
3578 | match_ptid); | |
80134cf5 | 3579 | |
21fe1c75 SM |
3580 | return it != this->items.end (); |
3581 | } | |
80134cf5 | 3582 | |
21fe1c75 | 3583 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3584 | |
21fe1c75 SM |
3585 | void remove_thread (ptid_t ptid) |
3586 | { | |
3587 | auto match_ptid = [&] (const thread_item &item) | |
3588 | { | |
dda83cd7 | 3589 | return item.ptid == ptid; |
21fe1c75 | 3590 | }; |
cbb8991c | 3591 | |
21fe1c75 SM |
3592 | auto it = std::remove_if (this->items.begin (), |
3593 | this->items.end (), | |
3594 | match_ptid); | |
cbb8991c | 3595 | |
21fe1c75 SM |
3596 | if (it != this->items.end ()) |
3597 | this->items.erase (it); | |
3598 | } | |
3599 | ||
3600 | /* The threads found on the remote target. */ | |
3601 | std::vector<thread_item> items; | |
3602 | }; | |
cbb8991c | 3603 | |
c906108c | 3604 | static int |
6dc54d91 | 3605 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3606 | { |
19ba03f4 SM |
3607 | struct threads_listing_context *context |
3608 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3609 | int pid = inferior_ptid.pid (); |
3610 | int lwp = threadref_to_int (ref); | |
3611 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3612 | |
21fe1c75 | 3613 | context->items.emplace_back (ptid); |
6dc54d91 | 3614 | |
c906108c SS |
3615 | return 1; /* continue iterator */ |
3616 | } | |
3617 | ||
3618 | #define CRAZY_MAX_THREADS 1000 | |
3619 | ||
6b8edb51 PA |
3620 | ptid_t |
3621 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3622 | { |
d01949b6 | 3623 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3624 | |
3625 | putpkt ("qC"); | |
8d64371b | 3626 | getpkt (&rs->buf, 0); |
2e9f7625 | 3627 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3628 | { |
256642e8 | 3629 | const char *obuf; |
c9f35b34 KB |
3630 | ptid_t result; |
3631 | ||
3632 | result = read_ptid (&rs->buf[2], &obuf); | |
3633 | if (*obuf != '\0' && remote_debug) | |
dda83cd7 SM |
3634 | fprintf_unfiltered (gdb_stdlog, |
3635 | "warning: garbage in qC reply\n"); | |
c9f35b34 KB |
3636 | |
3637 | return result; | |
3638 | } | |
c906108c SS |
3639 | else |
3640 | return oldpid; | |
3641 | } | |
3642 | ||
6dc54d91 | 3643 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3644 | |
6b8edb51 PA |
3645 | int |
3646 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3647 | { |
6dc54d91 PA |
3648 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3649 | CRAZY_MAX_THREADS) >= 0) | |
3650 | return 1; | |
3651 | ||
3652 | return 0; | |
c906108c SS |
3653 | } |
3654 | ||
dc146f7c VP |
3655 | #if defined(HAVE_LIBEXPAT) |
3656 | ||
dc146f7c VP |
3657 | static void |
3658 | start_thread (struct gdb_xml_parser *parser, | |
3659 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3660 | void *user_data, |
3661 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3662 | { |
19ba03f4 SM |
3663 | struct threads_listing_context *data |
3664 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3665 | struct gdb_xml_value *attr; |
dc146f7c | 3666 | |
4d0fdd9b | 3667 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3668 | ptid_t ptid = read_ptid (id, NULL); |
3669 | ||
3670 | data->items.emplace_back (ptid); | |
3671 | thread_item &item = data->items.back (); | |
dc146f7c | 3672 | |
3d2c1d41 PA |
3673 | attr = xml_find_attribute (attributes, "core"); |
3674 | if (attr != NULL) | |
4d0fdd9b | 3675 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3676 | |
79efa585 | 3677 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3678 | if (attr != NULL) |
4d0fdd9b | 3679 | item.name = (const char *) attr->value.get (); |
79efa585 | 3680 | |
f6327dcb KB |
3681 | attr = xml_find_attribute (attributes, "handle"); |
3682 | if (attr != NULL) | |
4d0fdd9b | 3683 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3684 | } |
3685 | ||
3686 | static void | |
3687 | end_thread (struct gdb_xml_parser *parser, | |
3688 | const struct gdb_xml_element *element, | |
3689 | void *user_data, const char *body_text) | |
3690 | { | |
19ba03f4 SM |
3691 | struct threads_listing_context *data |
3692 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3693 | |
21fe1c75 SM |
3694 | if (body_text != NULL && *body_text != '\0') |
3695 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3696 | } |
3697 | ||
3698 | const struct gdb_xml_attribute thread_attributes[] = { | |
3699 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3700 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3701 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3702 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3703 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3704 | }; | |
3705 | ||
3706 | const struct gdb_xml_element thread_children[] = { | |
3707 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3708 | }; | |
3709 | ||
3710 | const struct gdb_xml_element threads_children[] = { | |
3711 | { "thread", thread_attributes, thread_children, | |
3712 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3713 | start_thread, end_thread }, | |
3714 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3715 | }; | |
3716 | ||
3717 | const struct gdb_xml_element threads_elements[] = { | |
3718 | { "threads", NULL, threads_children, | |
3719 | GDB_XML_EF_NONE, NULL, NULL }, | |
3720 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3721 | }; | |
3722 | ||
3723 | #endif | |
3724 | ||
6dc54d91 | 3725 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3726 | |
6b8edb51 PA |
3727 | int |
3728 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3729 | { |
dc146f7c | 3730 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3731 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3732 | { |
9018be22 | 3733 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3734 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3735 | |
9018be22 | 3736 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3737 | { |
6dc54d91 | 3738 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3739 | threads_elements, xml->data (), context); |
dc146f7c VP |
3740 | } |
3741 | ||
6dc54d91 | 3742 | return 1; |
dc146f7c VP |
3743 | } |
3744 | #endif | |
3745 | ||
6dc54d91 PA |
3746 | return 0; |
3747 | } | |
3748 | ||
3749 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3750 | ||
6b8edb51 PA |
3751 | int |
3752 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3753 | { |
3754 | struct remote_state *rs = get_remote_state (); | |
3755 | ||
b80fafe3 | 3756 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3757 | { |
256642e8 | 3758 | const char *bufp; |
6dc54d91 | 3759 | |
9d1f7ab2 | 3760 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3761 | getpkt (&rs->buf, 0); |
3762 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3763 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3764 | { |
9d1f7ab2 MS |
3765 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3766 | { | |
3767 | do | |
3768 | { | |
21fe1c75 SM |
3769 | ptid_t ptid = read_ptid (bufp, &bufp); |
3770 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3771 | } |
3772 | while (*bufp++ == ','); /* comma-separated list */ | |
3773 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3774 | getpkt (&rs->buf, 0); |
3775 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3776 | } |
6dc54d91 PA |
3777 | return 1; |
3778 | } | |
3779 | else | |
3780 | { | |
3781 | /* Packet not recognized. */ | |
3782 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3783 | } |
3784 | } | |
3785 | ||
6dc54d91 PA |
3786 | return 0; |
3787 | } | |
3788 | ||
a05575d3 TBA |
3789 | /* Return true if INF only has one non-exited thread. */ |
3790 | ||
3791 | static bool | |
3792 | has_single_non_exited_thread (inferior *inf) | |
3793 | { | |
3794 | int count = 0; | |
3795 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
3796 | if (++count > 1) | |
3797 | break; | |
3798 | return count == 1; | |
3799 | } | |
3800 | ||
e8032dde | 3801 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3802 | targets. */ |
3803 | ||
f6ac5f3d PA |
3804 | void |
3805 | remote_target::update_thread_list () | |
6dc54d91 | 3806 | { |
6dc54d91 | 3807 | struct threads_listing_context context; |
ab970af1 | 3808 | int got_list = 0; |
e8032dde | 3809 | |
6dc54d91 PA |
3810 | /* We have a few different mechanisms to fetch the thread list. Try |
3811 | them all, starting with the most preferred one first, falling | |
3812 | back to older methods. */ | |
6b8edb51 PA |
3813 | if (remote_get_threads_with_qxfer (&context) |
3814 | || remote_get_threads_with_qthreadinfo (&context) | |
3815 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3816 | { |
ab970af1 PA |
3817 | got_list = 1; |
3818 | ||
21fe1c75 | 3819 | if (context.items.empty () |
f6ac5f3d | 3820 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3821 | { |
3822 | /* Some targets don't really support threads, but still | |
3823 | reply an (empty) thread list in response to the thread | |
3824 | listing packets, instead of replying "packet not | |
3825 | supported". Exit early so we don't delete the main | |
3826 | thread. */ | |
7d1a114c PA |
3827 | return; |
3828 | } | |
3829 | ||
ab970af1 PA |
3830 | /* CONTEXT now holds the current thread list on the remote |
3831 | target end. Delete GDB-side threads no longer found on the | |
3832 | target. */ | |
08036331 | 3833 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3834 | { |
5b6d1e4f PA |
3835 | if (tp->inf->process_target () != this) |
3836 | continue; | |
3837 | ||
21fe1c75 | 3838 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 3839 | { |
a05575d3 TBA |
3840 | /* Do not remove the thread if it is the last thread in |
3841 | the inferior. This situation happens when we have a | |
3842 | pending exit process status to process. Otherwise we | |
3843 | may end up with a seemingly live inferior (i.e. pid | |
3844 | != 0) that has no threads. */ | |
3845 | if (has_single_non_exited_thread (tp->inf)) | |
3846 | continue; | |
3847 | ||
ab970af1 | 3848 | /* Not found. */ |
00431a78 | 3849 | delete_thread (tp); |
ab970af1 | 3850 | } |
cbb8991c DB |
3851 | } |
3852 | ||
3853 | /* Remove any unreported fork child threads from CONTEXT so | |
3854 | that we don't interfere with follow fork, which is where | |
3855 | creation of such threads is handled. */ | |
3856 | remove_new_fork_children (&context); | |
74531fed | 3857 | |
ab970af1 | 3858 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3859 | for (thread_item &item : context.items) |
6dc54d91 | 3860 | { |
21fe1c75 | 3861 | if (item.ptid != null_ptid) |
6dc54d91 | 3862 | { |
6dc54d91 | 3863 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3864 | executing until proven otherwise with a stop reply. |
3865 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3866 | stopped. */ |
0d5b594f | 3867 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3868 | |
21fe1c75 | 3869 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3870 | |
5b6d1e4f | 3871 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 3872 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3873 | info->core = item.core; |
7aabaf9d SM |
3874 | info->extra = std::move (item.extra); |
3875 | info->name = std::move (item.name); | |
3876 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3877 | } |
3878 | } | |
3879 | } | |
3880 | ||
ab970af1 PA |
3881 | if (!got_list) |
3882 | { | |
3883 | /* If no thread listing method is supported, then query whether | |
3884 | each known thread is alive, one by one, with the T packet. | |
3885 | If the target doesn't support threads at all, then this is a | |
3886 | no-op. See remote_thread_alive. */ | |
3887 | prune_threads (); | |
3888 | } | |
9d1f7ab2 MS |
3889 | } |
3890 | ||
802188a7 | 3891 | /* |
9d1f7ab2 MS |
3892 | * Collect a descriptive string about the given thread. |
3893 | * The target may say anything it wants to about the thread | |
3894 | * (typically info about its blocked / runnable state, name, etc.). | |
3895 | * This string will appear in the info threads display. | |
802188a7 | 3896 | * |
9d1f7ab2 MS |
3897 | * Optional: targets are not required to implement this function. |
3898 | */ | |
3899 | ||
f6ac5f3d PA |
3900 | const char * |
3901 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3902 | { |
d01949b6 | 3903 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3904 | int set; |
3905 | threadref id; | |
3906 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 3907 | |
5d93a237 | 3908 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3909 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3910 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3911 | |
d7e15655 | 3912 | if (tp->ptid == magic_null_ptid |
e38504b3 | 3913 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
3914 | /* This is the main thread which was added by GDB. The remote |
3915 | server doesn't know about it. */ | |
3916 | return NULL; | |
3917 | ||
c76a8ea3 PA |
3918 | std::string &extra = get_remote_thread_info (tp)->extra; |
3919 | ||
3920 | /* If already have cached info, use it. */ | |
3921 | if (!extra.empty ()) | |
3922 | return extra.c_str (); | |
3923 | ||
4082afcc | 3924 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3925 | { |
c76a8ea3 PA |
3926 | /* If we're using qXfer:threads:read, then the extra info is |
3927 | included in the XML. So if we didn't have anything cached, | |
3928 | it's because there's really no extra info. */ | |
3929 | return NULL; | |
dc146f7c VP |
3930 | } |
3931 | ||
b80fafe3 | 3932 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3933 | { |
8d64371b TT |
3934 | char *b = rs->buf.data (); |
3935 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
3936 | |
3937 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3938 | b += strlen (b); | |
3939 | write_ptid (b, endb, tp->ptid); | |
3940 | ||
2e9f7625 | 3941 | putpkt (rs->buf); |
8d64371b | 3942 | getpkt (&rs->buf, 0); |
2e9f7625 | 3943 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3944 | { |
8d64371b TT |
3945 | extra.resize (strlen (rs->buf.data ()) / 2); |
3946 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 3947 | return extra.c_str (); |
9d1f7ab2 | 3948 | } |
0f71a2f6 | 3949 | } |
9d1f7ab2 MS |
3950 | |
3951 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3952 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3953 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3954 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 3955 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
3956 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3957 | if (threadinfo.active) | |
0f71a2f6 | 3958 | { |
9d1f7ab2 | 3959 | if (*threadinfo.shortname) |
c76a8ea3 | 3960 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 3961 | if (*threadinfo.display) |
c76a8ea3 PA |
3962 | { |
3963 | if (!extra.empty ()) | |
3964 | extra += ','; | |
3965 | string_appendf (extra, " State: %s", threadinfo.display); | |
3966 | } | |
9d1f7ab2 | 3967 | if (*threadinfo.more_display) |
c5aa993b | 3968 | { |
c76a8ea3 PA |
3969 | if (!extra.empty ()) |
3970 | extra += ','; | |
3971 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 3972 | } |
c76a8ea3 | 3973 | return extra.c_str (); |
0f71a2f6 | 3974 | } |
9d1f7ab2 | 3975 | return NULL; |
0f71a2f6 | 3976 | } |
c906108c | 3977 | \f |
c5aa993b | 3978 | |
f6ac5f3d PA |
3979 | bool |
3980 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3981 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3982 | { |
3983 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 3984 | char *p = rs->buf.data (); |
0fb4aa4b | 3985 | |
bba74b36 | 3986 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3987 | p += strlen (p); |
3988 | p += hexnumstr (p, addr); | |
3989 | putpkt (rs->buf); | |
8d64371b TT |
3990 | getpkt (&rs->buf, 0); |
3991 | p = rs->buf.data (); | |
0fb4aa4b PA |
3992 | |
3993 | if (*p == 'E') | |
3994 | error (_("Remote failure reply: %s"), p); | |
3995 | ||
3996 | if (*p++ == 'm') | |
3997 | { | |
256642e8 | 3998 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3999 | return true; |
0fb4aa4b PA |
4000 | } |
4001 | ||
5d9310c4 | 4002 | return false; |
0fb4aa4b PA |
4003 | } |
4004 | ||
f6ac5f3d PA |
4005 | std::vector<static_tracepoint_marker> |
4006 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4007 | { |
4008 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4009 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4010 | const char *p; |
5d9310c4 | 4011 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4012 | |
4013 | /* Ask for a first packet of static tracepoint marker | |
4014 | definition. */ | |
4015 | putpkt ("qTfSTM"); | |
8d64371b TT |
4016 | getpkt (&rs->buf, 0); |
4017 | p = rs->buf.data (); | |
0fb4aa4b PA |
4018 | if (*p == 'E') |
4019 | error (_("Remote failure reply: %s"), p); | |
4020 | ||
0fb4aa4b PA |
4021 | while (*p++ == 'm') |
4022 | { | |
0fb4aa4b PA |
4023 | do |
4024 | { | |
5d9310c4 | 4025 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4026 | |
5d9310c4 SM |
4027 | if (strid == NULL || marker.str_id == strid) |
4028 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4029 | } |
4030 | while (*p++ == ','); /* comma-separated list */ | |
4031 | /* Ask for another packet of static tracepoint definition. */ | |
4032 | putpkt ("qTsSTM"); | |
8d64371b TT |
4033 | getpkt (&rs->buf, 0); |
4034 | p = rs->buf.data (); | |
0fb4aa4b PA |
4035 | } |
4036 | ||
0fb4aa4b PA |
4037 | return markers; |
4038 | } | |
4039 | ||
4040 | \f | |
10760264 JB |
4041 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4042 | ||
f6ac5f3d PA |
4043 | ptid_t |
4044 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 4045 | { |
e99b03dc | 4046 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
4047 | } |
4048 | \f | |
4049 | ||
24b06219 | 4050 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4051 | |
6b8edb51 PA |
4052 | void |
4053 | remote_target::extended_remote_restart () | |
c906108c | 4054 | { |
d01949b6 | 4055 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4056 | |
4057 | /* Send the restart command; for reasons I don't understand the | |
4058 | remote side really expects a number after the "R". */ | |
8d64371b | 4059 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4060 | putpkt (rs->buf); |
c906108c | 4061 | |
ad9a8f3f | 4062 | remote_fileio_reset (); |
c906108c SS |
4063 | } |
4064 | \f | |
4065 | /* Clean up connection to a remote debugger. */ | |
4066 | ||
f6ac5f3d PA |
4067 | void |
4068 | remote_target::close () | |
c906108c | 4069 | { |
048094ac | 4070 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4071 | terminal_ours (); |
ce5ce7ed | 4072 | |
6b8edb51 PA |
4073 | trace_reset_local_state (); |
4074 | ||
4075 | delete this; | |
4076 | } | |
4077 | ||
4078 | remote_target::~remote_target () | |
4079 | { | |
4080 | struct remote_state *rs = get_remote_state (); | |
4081 | ||
4082 | /* Check for NULL because we may get here with a partially | |
4083 | constructed target/connection. */ | |
4084 | if (rs->remote_desc == nullptr) | |
4085 | return; | |
4086 | ||
4087 | serial_close (rs->remote_desc); | |
4088 | ||
4089 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4090 | everything of this target. */ |
6b8edb51 | 4091 | discard_pending_stop_replies_in_queue (); |
74531fed | 4092 | |
6b8edb51 PA |
4093 | if (rs->remote_async_inferior_event_token) |
4094 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4095 | |
97dfbadd | 4096 | delete rs->notif_state; |
c906108c SS |
4097 | } |
4098 | ||
23860348 | 4099 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4100 | |
6b8edb51 PA |
4101 | void |
4102 | remote_target::get_offsets () | |
c906108c | 4103 | { |
d01949b6 | 4104 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4105 | char *buf; |
085dd6e6 | 4106 | char *ptr; |
31d99776 DJ |
4107 | int lose, num_segments = 0, do_sections, do_segments; |
4108 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4109 | |
a42d7dd8 | 4110 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4111 | return; |
c906108c SS |
4112 | |
4113 | putpkt ("qOffsets"); | |
8d64371b TT |
4114 | getpkt (&rs->buf, 0); |
4115 | buf = rs->buf.data (); | |
c906108c SS |
4116 | |
4117 | if (buf[0] == '\000') | |
4118 | return; /* Return silently. Stub doesn't support | |
23860348 | 4119 | this command. */ |
c906108c SS |
4120 | if (buf[0] == 'E') |
4121 | { | |
8a3fe4f8 | 4122 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4123 | return; |
4124 | } | |
4125 | ||
4126 | /* Pick up each field in turn. This used to be done with scanf, but | |
4127 | scanf will make trouble if CORE_ADDR size doesn't match | |
4128 | conversion directives correctly. The following code will work | |
4129 | with any size of CORE_ADDR. */ | |
4130 | text_addr = data_addr = bss_addr = 0; | |
4131 | ptr = buf; | |
4132 | lose = 0; | |
4133 | ||
61012eef | 4134 | if (startswith (ptr, "Text=")) |
c906108c SS |
4135 | { |
4136 | ptr += 5; | |
4137 | /* Don't use strtol, could lose on big values. */ | |
4138 | while (*ptr && *ptr != ';') | |
4139 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4140 | |
61012eef | 4141 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4142 | { |
4143 | ptr += 6; | |
4144 | while (*ptr && *ptr != ';') | |
4145 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4146 | } | |
4147 | else | |
4148 | lose = 1; | |
4149 | ||
61012eef | 4150 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4151 | { |
4152 | ptr += 5; | |
4153 | while (*ptr && *ptr != ';') | |
4154 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4155 | |
31d99776 DJ |
4156 | if (bss_addr != data_addr) |
4157 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4158 | } | |
4159 | else | |
4160 | lose = 1; | |
4161 | } | |
61012eef | 4162 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4163 | { |
31d99776 DJ |
4164 | ptr += 8; |
4165 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4166 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4167 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4168 | num_segments = 1; | |
4169 | ||
61012eef | 4170 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4171 | { |
4172 | ptr += 9; | |
4173 | while (*ptr && *ptr != ';') | |
4174 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4175 | num_segments++; | |
4176 | } | |
c906108c SS |
4177 | } |
4178 | else | |
4179 | lose = 1; | |
4180 | ||
4181 | if (lose) | |
8a3fe4f8 | 4182 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4183 | else if (*ptr != '\0') |
4184 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4185 | |
a42d7dd8 TT |
4186 | objfile *objf = current_program_space->symfile_object_file; |
4187 | section_offsets offs = objf->section_offsets; | |
c906108c | 4188 | |
a42d7dd8 | 4189 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd); |
31d99776 DJ |
4190 | do_segments = (data != NULL); |
4191 | do_sections = num_segments == 0; | |
c906108c | 4192 | |
28c32713 | 4193 | if (num_segments > 0) |
31d99776 | 4194 | { |
31d99776 DJ |
4195 | segments[0] = text_addr; |
4196 | segments[1] = data_addr; | |
4197 | } | |
28c32713 JB |
4198 | /* If we have two segments, we can still try to relocate everything |
4199 | by assuming that the .text and .data offsets apply to the whole | |
4200 | text and data segments. Convert the offsets given in the packet | |
4201 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4202 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4203 | { |
68b888ff SM |
4204 | segments[0] = data->segments[0].base + text_addr; |
4205 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4206 | num_segments = 2; |
4207 | } | |
8d385431 DJ |
4208 | /* If the object file has only one segment, assume that it is text |
4209 | rather than data; main programs with no writable data are rare, | |
4210 | but programs with no code are useless. Of course the code might | |
4211 | have ended up in the data segment... to detect that we would need | |
4212 | the permissions here. */ | |
68b888ff | 4213 | else if (data && data->segments.size () == 1) |
8d385431 | 4214 | { |
68b888ff | 4215 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4216 | num_segments = 1; |
4217 | } | |
28c32713 JB |
4218 | /* There's no way to relocate by segment. */ |
4219 | else | |
4220 | do_segments = 0; | |
31d99776 DJ |
4221 | |
4222 | if (do_segments) | |
4223 | { | |
a42d7dd8 | 4224 | int ret = symfile_map_offsets_to_segments (objf->obfd, |
62982abd SM |
4225 | data.get (), offs, |
4226 | num_segments, segments); | |
31d99776 DJ |
4227 | |
4228 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4229 | error (_("Can not handle qOffsets TextSeg " |
4230 | "response with this symbol file")); | |
31d99776 DJ |
4231 | |
4232 | if (ret > 0) | |
4233 | do_sections = 0; | |
4234 | } | |
c906108c | 4235 | |
31d99776 DJ |
4236 | if (do_sections) |
4237 | { | |
a42d7dd8 | 4238 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4239 | |
3e43a32a MS |
4240 | /* This is a temporary kludge to force data and bss to use the |
4241 | same offsets because that's what nlmconv does now. The real | |
4242 | solution requires changes to the stub and remote.c that I | |
4243 | don't have time to do right now. */ | |
31d99776 | 4244 | |
a42d7dd8 TT |
4245 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4246 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4247 | } |
c906108c | 4248 | |
a42d7dd8 | 4249 | objfile_relocate (objf, offs); |
c906108c SS |
4250 | } |
4251 | ||
9a7071a8 | 4252 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4253 | |
4254 | void | |
4255 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4256 | { |
5d93a237 TT |
4257 | struct remote_state *rs = get_remote_state (); |
4258 | ||
9a7071a8 | 4259 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4260 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4261 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4262 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4263 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4264 | { | |
5d93a237 | 4265 | serial_send_break (rs->remote_desc); |
c33e31fd | 4266 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4267 | } |
4268 | else | |
4269 | internal_error (__FILE__, __LINE__, | |
4270 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4271 | interrupt_sequence_mode); | |
4272 | } | |
4273 | ||
3405876a PA |
4274 | |
4275 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4276 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4277 | ||
4278 | static ptid_t | |
4279 | stop_reply_extract_thread (char *stop_reply) | |
4280 | { | |
4281 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4282 | { | |
256642e8 | 4283 | const char *p; |
3405876a PA |
4284 | |
4285 | /* Txx r:val ; r:val (...) */ | |
4286 | p = &stop_reply[3]; | |
4287 | ||
4288 | /* Look for "register" named "thread". */ | |
4289 | while (*p != '\0') | |
4290 | { | |
256642e8 | 4291 | const char *p1; |
3405876a PA |
4292 | |
4293 | p1 = strchr (p, ':'); | |
4294 | if (p1 == NULL) | |
4295 | return null_ptid; | |
4296 | ||
4297 | if (strncmp (p, "thread", p1 - p) == 0) | |
4298 | return read_ptid (++p1, &p); | |
4299 | ||
4300 | p1 = strchr (p, ';'); | |
4301 | if (p1 == NULL) | |
4302 | return null_ptid; | |
4303 | p1++; | |
4304 | ||
4305 | p = p1; | |
4306 | } | |
4307 | } | |
4308 | ||
4309 | return null_ptid; | |
4310 | } | |
4311 | ||
b7ea362b PA |
4312 | /* Determine the remote side's current thread. If we have a stop |
4313 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4314 | "thread" register we can extract the current thread from. If not, | |
4315 | ask the remote which is the current thread with qC. The former | |
4316 | method avoids a roundtrip. */ | |
4317 | ||
6b8edb51 PA |
4318 | ptid_t |
4319 | remote_target::get_current_thread (char *wait_status) | |
b7ea362b | 4320 | { |
6a49a997 | 4321 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4322 | |
4323 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4324 | the target architecture, which we haven't yet fully determined at | |
4325 | this point. */ | |
4326 | if (wait_status != NULL) | |
4327 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4328 | if (ptid == null_ptid) |
b7ea362b PA |
4329 | ptid = remote_current_thread (inferior_ptid); |
4330 | ||
4331 | return ptid; | |
4332 | } | |
4333 | ||
49c62f2e PA |
4334 | /* Query the remote target for which is the current thread/process, |
4335 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4336 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4337 | to return the current thread. |
4338 | ||
4339 | This function is called after handling the '?' or 'vRun' packets, | |
4340 | whose response is a stop reply from which we can also try | |
4341 | extracting the thread. If the target doesn't support the explicit | |
4342 | qC query, we infer the current thread from that stop reply, passed | |
4343 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e | 4344 | |
6b8edb51 PA |
4345 | void |
4346 | remote_target::add_current_inferior_and_thread (char *wait_status) | |
49c62f2e PA |
4347 | { |
4348 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4349 | bool fake_pid_p = false; |
49c62f2e | 4350 | |
0ac55310 | 4351 | switch_to_no_thread (); |
49c62f2e | 4352 | |
0ac55310 PA |
4353 | /* Now, if we have thread information, update the current thread's |
4354 | ptid. */ | |
87215ad1 | 4355 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4356 | |
87215ad1 | 4357 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4358 | { |
4359 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4360 | fake_pid_p = true; |
49c62f2e PA |
4361 | } |
4362 | else | |
4363 | { | |
4364 | /* Without this, some commands which require an active target | |
4365 | (such as kill) won't work. This variable serves (at least) | |
4366 | double duty as both the pid of the target process (if it has | |
4367 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4368 | curr_ptid = magic_null_ptid; |
9ab8741a | 4369 | fake_pid_p = true; |
49c62f2e PA |
4370 | } |
4371 | ||
e99b03dc | 4372 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4373 | |
87215ad1 SDJ |
4374 | /* Add the main thread and switch to it. Don't try reading |
4375 | registers yet, since we haven't fetched the target description | |
4376 | yet. */ | |
5b6d1e4f | 4377 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4378 | switch_to_thread_no_regs (tp); |
49c62f2e PA |
4379 | } |
4380 | ||
6efcd9a8 PA |
4381 | /* Print info about a thread that was found already stopped on |
4382 | connection. */ | |
4383 | ||
4384 | static void | |
4385 | print_one_stopped_thread (struct thread_info *thread) | |
4386 | { | |
4387 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4388 | ||
00431a78 | 4389 | switch_to_thread (thread); |
f2ffa92b | 4390 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4391 | set_current_sal_from_frame (get_current_frame ()); |
4392 | ||
4393 | thread->suspend.waitstatus_pending_p = 0; | |
4394 | ||
4395 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4396 | { | |
4397 | enum gdb_signal sig = ws->value.sig; | |
4398 | ||
4399 | if (signal_print_state (sig)) | |
76727919 | 4400 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4401 | } |
76727919 | 4402 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4403 | } |
4404 | ||
221e1a37 PA |
4405 | /* Process all initial stop replies the remote side sent in response |
4406 | to the ? packet. These indicate threads that were already stopped | |
4407 | on initial connection. We mark these threads as stopped and print | |
4408 | their current frame before giving the user the prompt. */ | |
4409 | ||
6b8edb51 PA |
4410 | void |
4411 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4412 | { |
4413 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4414 | struct thread_info *selected = NULL; |
4415 | struct thread_info *lowest_stopped = NULL; | |
4416 | struct thread_info *first = NULL; | |
221e1a37 PA |
4417 | |
4418 | /* Consume the initial pending events. */ | |
4419 | while (pending_stop_replies-- > 0) | |
4420 | { | |
4421 | ptid_t waiton_ptid = minus_one_ptid; | |
4422 | ptid_t event_ptid; | |
4423 | struct target_waitstatus ws; | |
4424 | int ignore_event = 0; | |
4425 | ||
4426 | memset (&ws, 0, sizeof (ws)); | |
4427 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4428 | if (remote_debug) | |
4429 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4430 | ||
4431 | switch (ws.kind) | |
4432 | { | |
4433 | case TARGET_WAITKIND_IGNORE: | |
4434 | case TARGET_WAITKIND_NO_RESUMED: | |
4435 | case TARGET_WAITKIND_SIGNALLED: | |
4436 | case TARGET_WAITKIND_EXITED: | |
4437 | /* We shouldn't see these, but if we do, just ignore. */ | |
4438 | if (remote_debug) | |
4439 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4440 | ignore_event = 1; | |
4441 | break; | |
4442 | ||
4443 | case TARGET_WAITKIND_EXECD: | |
4444 | xfree (ws.value.execd_pathname); | |
4445 | break; | |
4446 | default: | |
4447 | break; | |
4448 | } | |
4449 | ||
4450 | if (ignore_event) | |
4451 | continue; | |
4452 | ||
5b6d1e4f | 4453 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 PA |
4454 | |
4455 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4456 | { | |
4457 | enum gdb_signal sig = ws.value.sig; | |
4458 | ||
4459 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4460 | instead of signal 0. Suppress it. */ | |
4461 | if (sig == GDB_SIGNAL_TRAP) | |
4462 | sig = GDB_SIGNAL_0; | |
b926417a | 4463 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4464 | ws.value.sig = sig; |
4465 | } | |
221e1a37 | 4466 | |
b926417a | 4467 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4468 | |
4469 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4470 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4471 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 | 4472 | |
719546c4 SM |
4473 | set_executing (this, event_ptid, false); |
4474 | set_running (this, event_ptid, false); | |
b926417a | 4475 | get_remote_thread_info (evthread)->vcont_resumed = 0; |
6efcd9a8 PA |
4476 | } |
4477 | ||
4478 | /* "Notice" the new inferiors before anything related to | |
4479 | registers/memory. */ | |
5b6d1e4f | 4480 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4481 | { |
6efcd9a8 PA |
4482 | inf->needs_setup = 1; |
4483 | ||
4484 | if (non_stop) | |
4485 | { | |
08036331 | 4486 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4487 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4488 | from_tty); |
4489 | } | |
4490 | } | |
4491 | ||
4492 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4493 | records the threads' stop pc, so must be done after "noticing" | |
4494 | the inferiors. */ | |
4495 | if (!non_stop) | |
4496 | { | |
4497 | stop_all_threads (); | |
4498 | ||
4499 | /* If all threads of an inferior were already stopped, we | |
4500 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4501 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4502 | { |
6efcd9a8 PA |
4503 | if (inf->needs_setup) |
4504 | { | |
08036331 | 4505 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4506 | switch_to_thread_no_regs (thread); |
4507 | setup_inferior (0); | |
4508 | } | |
4509 | } | |
221e1a37 | 4510 | } |
6efcd9a8 PA |
4511 | |
4512 | /* Now go over all threads that are stopped, and print their current | |
4513 | frame. If all-stop, then if there's a signalled thread, pick | |
4514 | that as current. */ | |
5b6d1e4f | 4515 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4516 | { |
6efcd9a8 PA |
4517 | if (first == NULL) |
4518 | first = thread; | |
4519 | ||
4520 | if (!non_stop) | |
00431a78 | 4521 | thread->set_running (false); |
6efcd9a8 PA |
4522 | else if (thread->state != THREAD_STOPPED) |
4523 | continue; | |
4524 | ||
6efcd9a8 PA |
4525 | if (selected == NULL |
4526 | && thread->suspend.waitstatus_pending_p) | |
4527 | selected = thread; | |
4528 | ||
5d5658a1 PA |
4529 | if (lowest_stopped == NULL |
4530 | || thread->inf->num < lowest_stopped->inf->num | |
4531 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4532 | lowest_stopped = thread; |
4533 | ||
4534 | if (non_stop) | |
4535 | print_one_stopped_thread (thread); | |
4536 | } | |
4537 | ||
4538 | /* In all-stop, we only print the status of one thread, and leave | |
4539 | others with their status pending. */ | |
4540 | if (!non_stop) | |
4541 | { | |
08036331 | 4542 | thread_info *thread = selected; |
6efcd9a8 PA |
4543 | if (thread == NULL) |
4544 | thread = lowest_stopped; | |
4545 | if (thread == NULL) | |
4546 | thread = first; | |
4547 | ||
4548 | print_one_stopped_thread (thread); | |
4549 | } | |
4550 | ||
4551 | /* For "info program". */ | |
08036331 | 4552 | thread_info *thread = inferior_thread (); |
6efcd9a8 | 4553 | if (thread->state == THREAD_STOPPED) |
5b6d1e4f | 4554 | set_last_target_status (this, inferior_ptid, thread->suspend.waitstatus); |
221e1a37 PA |
4555 | } |
4556 | ||
048094ac PA |
4557 | /* Start the remote connection and sync state. */ |
4558 | ||
f6ac5f3d PA |
4559 | void |
4560 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4561 | { |
c8d104ad PA |
4562 | struct remote_state *rs = get_remote_state (); |
4563 | struct packet_config *noack_config; | |
2d717e4f | 4564 | char *wait_status = NULL; |
8621d6a9 | 4565 | |
048094ac PA |
4566 | /* Signal other parts that we're going through the initial setup, |
4567 | and so things may not be stable yet. E.g., we don't try to | |
4568 | install tracepoints until we've relocated symbols. Also, a | |
4569 | Ctrl-C before we're connected and synced up can't interrupt the | |
4570 | target. Instead, it offers to drop the (potentially wedged) | |
4571 | connection. */ | |
4572 | rs->starting_up = 1; | |
4573 | ||
522002f9 | 4574 | QUIT; |
c906108c | 4575 | |
9a7071a8 JB |
4576 | if (interrupt_on_connect) |
4577 | send_interrupt_sequence (); | |
4578 | ||
57e12211 | 4579 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4580 | remote_serial_write ("+", 1); |
1e51243a | 4581 | |
c8d104ad PA |
4582 | /* The first packet we send to the target is the optional "supported |
4583 | packets" request. If the target can answer this, it will tell us | |
4584 | which later probes to skip. */ | |
4585 | remote_query_supported (); | |
4586 | ||
d914c394 | 4587 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4588 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4589 | set_permissions (); |
d914c394 | 4590 | |
57809e5e JK |
4591 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4592 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4593 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4594 | invalid reply and GDB would return error in | |
4595 | remote_hostio_set_filesystem, making remote files access impossible. | |
4596 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4597 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4598 | { | |
4599 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4600 | ||
4601 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4602 | getpkt (&rs->buf, 0); |
4603 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4604 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4605 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4606 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4607 | rs->buf.data ()); |
57809e5e JK |
4608 | } |
4609 | ||
c8d104ad PA |
4610 | /* Next, we possibly activate noack mode. |
4611 | ||
4612 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4613 | enable noack mode if the stub reported a wish for it with | |
4614 | qSupported. | |
4615 | ||
4616 | If set to TRUE, then enable noack mode even if the stub didn't | |
4617 | report it in qSupported. If the stub doesn't reply OK, the | |
4618 | session ends with an error. | |
4619 | ||
4620 | If FALSE, then don't activate noack mode, regardless of what the | |
4621 | stub claimed should be the default with qSupported. */ | |
4622 | ||
4623 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4624 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4625 | { |
4626 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4627 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4628 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4629 | rs->noack_mode = 1; | |
4630 | } | |
4631 | ||
04bd08de | 4632 | if (extended_p) |
5fe04517 PA |
4633 | { |
4634 | /* Tell the remote that we are using the extended protocol. */ | |
4635 | putpkt ("!"); | |
8d64371b | 4636 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4637 | } |
4638 | ||
9b224c5e PA |
4639 | /* Let the target know which signals it is allowed to pass down to |
4640 | the program. */ | |
4641 | update_signals_program_target (); | |
4642 | ||
d962ef82 DJ |
4643 | /* Next, if the target can specify a description, read it. We do |
4644 | this before anything involving memory or registers. */ | |
4645 | target_find_description (); | |
4646 | ||
6c95b8df PA |
4647 | /* Next, now that we know something about the target, update the |
4648 | address spaces in the program spaces. */ | |
4649 | update_address_spaces (); | |
4650 | ||
50c71eaf PA |
4651 | /* On OSs where the list of libraries is global to all |
4652 | processes, we fetch them early. */ | |
f5656ead | 4653 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4654 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4655 | |
6efcd9a8 | 4656 | if (target_is_non_stop_p ()) |
74531fed | 4657 | { |
4082afcc | 4658 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4659 | error (_("Non-stop mode requested, but remote " |
4660 | "does not support non-stop")); | |
74531fed PA |
4661 | |
4662 | putpkt ("QNonStop:1"); | |
8d64371b | 4663 | getpkt (&rs->buf, 0); |
74531fed | 4664 | |
8d64371b TT |
4665 | if (strcmp (rs->buf.data (), "OK") != 0) |
4666 | error (_("Remote refused setting non-stop mode with: %s"), | |
4667 | rs->buf.data ()); | |
74531fed PA |
4668 | |
4669 | /* Find about threads and processes the stub is already | |
4670 | controlling. We default to adding them in the running state. | |
4671 | The '?' query below will then tell us about which threads are | |
4672 | stopped. */ | |
f6ac5f3d | 4673 | this->update_thread_list (); |
74531fed | 4674 | } |
4082afcc | 4675 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4676 | { |
4677 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4678 | Request it explicitly. */ |
74531fed | 4679 | putpkt ("QNonStop:0"); |
8d64371b | 4680 | getpkt (&rs->buf, 0); |
74531fed | 4681 | |
8d64371b TT |
4682 | if (strcmp (rs->buf.data (), "OK") != 0) |
4683 | error (_("Remote refused setting all-stop mode with: %s"), | |
4684 | rs->buf.data ()); | |
74531fed PA |
4685 | } |
4686 | ||
a0743c90 YQ |
4687 | /* Upload TSVs regardless of whether the target is running or not. The |
4688 | remote stub, such as GDBserver, may have some predefined or builtin | |
4689 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4690 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4691 | { |
4692 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4693 | ||
f6ac5f3d | 4694 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4695 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4696 | } | |
4697 | ||
2d717e4f DJ |
4698 | /* Check whether the target is running now. */ |
4699 | putpkt ("?"); | |
8d64371b | 4700 | getpkt (&rs->buf, 0); |
2d717e4f | 4701 | |
6efcd9a8 | 4702 | if (!target_is_non_stop_p ()) |
2d717e4f | 4703 | { |
74531fed | 4704 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4705 | { |
04bd08de | 4706 | if (!extended_p) |
74531fed | 4707 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4708 | |
4709 | /* We're connected, but not running. Drop out before we | |
4710 | call start_remote. */ | |
e278ad5b | 4711 | rs->starting_up = 0; |
c35b1492 | 4712 | return; |
2d717e4f DJ |
4713 | } |
4714 | else | |
74531fed | 4715 | { |
74531fed | 4716 | /* Save the reply for later. */ |
8d64371b TT |
4717 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4718 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4719 | } |
4720 | ||
b7ea362b | 4721 | /* Fetch thread list. */ |
e8032dde | 4722 | target_update_thread_list (); |
b7ea362b | 4723 | |
74531fed PA |
4724 | /* Let the stub know that we want it to return the thread. */ |
4725 | set_continue_thread (minus_one_ptid); | |
4726 | ||
5b6d1e4f | 4727 | if (thread_count (this) == 0) |
b7ea362b PA |
4728 | { |
4729 | /* Target has no concept of threads at all. GDB treats | |
4730 | non-threaded target as single-threaded; add a main | |
4731 | thread. */ | |
4732 | add_current_inferior_and_thread (wait_status); | |
4733 | } | |
4734 | else | |
4735 | { | |
4736 | /* We have thread information; select the thread the target | |
4737 | says should be current. If we're reconnecting to a | |
4738 | multi-threaded program, this will ideally be the thread | |
4739 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4740 | ptid_t curr_thread = get_current_thread (wait_status); |
4741 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4742 | { |
4743 | /* Odd... The target was able to list threads, but not | |
4744 | tell us which thread was current (no "thread" | |
4745 | register in T stop reply?). Just pick the first | |
4746 | thread in the thread list then. */ | |
c9f35b34 KB |
4747 | |
4748 | if (remote_debug) | |
4749 | fprintf_unfiltered (gdb_stdlog, | |
dda83cd7 | 4750 | "warning: couldn't determine remote " |
c9f35b34 KB |
4751 | "current thread; picking first in list.\n"); |
4752 | ||
5b6d1e4f PA |
4753 | for (thread_info *tp : all_non_exited_threads (this, |
4754 | minus_one_ptid)) | |
75c6c844 PA |
4755 | { |
4756 | switch_to_thread (tp); | |
4757 | break; | |
4758 | } | |
b7ea362b | 4759 | } |
75c6c844 | 4760 | else |
5b6d1e4f | 4761 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4762 | } |
74531fed | 4763 | |
6e586cc5 YQ |
4764 | /* init_wait_for_inferior should be called before get_offsets in order |
4765 | to manage `inserted' flag in bp loc in a correct state. | |
4766 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4767 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4768 | start_remote, set `inserted' flag to 1. In the initialization of | |
4769 | inferior, breakpoint_init_inferior should be called first, and then | |
4770 | breakpoint_re_set can be called. If this order is broken, state of | |
4771 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4772 | manipulation. */ | |
4773 | init_wait_for_inferior (); | |
4774 | ||
74531fed PA |
4775 | get_offsets (); /* Get text, data & bss offsets. */ |
4776 | ||
d962ef82 DJ |
4777 | /* If we could not find a description using qXfer, and we know |
4778 | how to do it some other way, try again. This is not | |
4779 | supported for non-stop; it could be, but it is tricky if | |
4780 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4781 | if (remote_read_description_p (this) |
f5656ead | 4782 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4783 | { |
4784 | target_clear_description (); | |
4785 | target_find_description (); | |
4786 | } | |
4787 | ||
74531fed PA |
4788 | /* Use the previously fetched status. */ |
4789 | gdb_assert (wait_status != NULL); | |
8d64371b | 4790 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4791 | rs->cached_wait_status = 1; |
4792 | ||
f6ac5f3d | 4793 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4794 | } |
4795 | else | |
4796 | { | |
68c97600 PA |
4797 | /* Clear WFI global state. Do this before finding about new |
4798 | threads and inferiors, and setting the current inferior. | |
4799 | Otherwise we would clear the proceed status of the current | |
4800 | inferior when we want its stop_soon state to be preserved | |
4801 | (see notice_new_inferior). */ | |
4802 | init_wait_for_inferior (); | |
4803 | ||
74531fed PA |
4804 | /* In non-stop, we will either get an "OK", meaning that there |
4805 | are no stopped threads at this time; or, a regular stop | |
4806 | reply. In the latter case, there may be more than one thread | |
4807 | stopped --- we pull them all out using the vStopped | |
4808 | mechanism. */ | |
8d64371b | 4809 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4810 | { |
722247f1 | 4811 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4812 | |
722247f1 YQ |
4813 | /* remote_notif_get_pending_replies acks this one, and gets |
4814 | the rest out. */ | |
f48ff2a7 | 4815 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4816 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4817 | remote_notif_get_pending_events (notif); |
74531fed | 4818 | } |
2d717e4f | 4819 | |
5b6d1e4f | 4820 | if (thread_count (this) == 0) |
74531fed | 4821 | { |
04bd08de | 4822 | if (!extended_p) |
74531fed | 4823 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4824 | |
c35b1492 PA |
4825 | /* We're connected, but not running. Drop out before we |
4826 | call start_remote. */ | |
e278ad5b | 4827 | rs->starting_up = 0; |
c35b1492 PA |
4828 | return; |
4829 | } | |
74531fed | 4830 | |
74531fed PA |
4831 | /* In non-stop mode, any cached wait status will be stored in |
4832 | the stop reply queue. */ | |
4833 | gdb_assert (wait_status == NULL); | |
f0223081 | 4834 | |
2455069d | 4835 | /* Report all signals during attach/startup. */ |
adc6a863 | 4836 | pass_signals ({}); |
221e1a37 PA |
4837 | |
4838 | /* If there are already stopped threads, mark them stopped and | |
4839 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4840 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4841 | |
4842 | if (target_can_async_p ()) | |
4843 | target_async (1); | |
74531fed | 4844 | } |
c8d104ad | 4845 | |
c8d104ad | 4846 | /* If we connected to a live target, do some additional setup. */ |
55f6301a | 4847 | if (target_has_execution ()) |
c8d104ad | 4848 | { |
a42d7dd8 TT |
4849 | /* No use without a symbol-file. */ |
4850 | if (current_program_space->symfile_object_file) | |
36d25514 | 4851 | remote_check_symbols (); |
c8d104ad | 4852 | } |
50c71eaf | 4853 | |
d5551862 SS |
4854 | /* Possibly the target has been engaged in a trace run started |
4855 | previously; find out where things are at. */ | |
f6ac5f3d | 4856 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4857 | { |
00bf0b85 | 4858 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4859 | |
00bf0b85 SS |
4860 | if (current_trace_status ()->running) |
4861 | printf_filtered (_("Trace is already running on the target.\n")); | |
4862 | ||
f6ac5f3d | 4863 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4864 | |
4865 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4866 | } |
4867 | ||
c0272db5 TW |
4868 | /* Possibly the target has been engaged in a btrace record started |
4869 | previously; find out where things are at. */ | |
4870 | remote_btrace_maybe_reopen (); | |
4871 | ||
1e51243a PA |
4872 | /* The thread and inferior lists are now synchronized with the |
4873 | target, our symbols have been relocated, and we're merged the | |
4874 | target's tracepoints with ours. We're done with basic start | |
4875 | up. */ | |
4876 | rs->starting_up = 0; | |
4877 | ||
a25a5a45 PA |
4878 | /* Maybe breakpoints are global and need to be inserted now. */ |
4879 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4880 | insert_breakpoints (); |
c906108c SS |
4881 | } |
4882 | ||
121b3efd PA |
4883 | const char * |
4884 | remote_target::connection_string () | |
4885 | { | |
4886 | remote_state *rs = get_remote_state (); | |
4887 | ||
4888 | if (rs->remote_desc->name != NULL) | |
4889 | return rs->remote_desc->name; | |
4890 | else | |
4891 | return NULL; | |
4892 | } | |
4893 | ||
c906108c SS |
4894 | /* Open a connection to a remote debugger. |
4895 | NAME is the filename used for communication. */ | |
4896 | ||
f6ac5f3d PA |
4897 | void |
4898 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4899 | { |
f6ac5f3d | 4900 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4901 | } |
4902 | ||
c906108c SS |
4903 | /* Open a connection to a remote debugger using the extended |
4904 | remote gdb protocol. NAME is the filename used for communication. */ | |
4905 | ||
f6ac5f3d PA |
4906 | void |
4907 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4908 | { |
f6ac5f3d | 4909 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4910 | } |
4911 | ||
ca4f7f8b PA |
4912 | /* Reset all packets back to "unknown support". Called when opening a |
4913 | new connection to a remote target. */ | |
c906108c | 4914 | |
d471ea57 | 4915 | static void |
ca4f7f8b | 4916 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4917 | { |
4918 | int i; | |
a744cf53 | 4919 | |
444abaca | 4920 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4921 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4922 | } |
4923 | ||
ca4f7f8b PA |
4924 | /* Initialize all packet configs. */ |
4925 | ||
4926 | static void | |
4927 | init_all_packet_configs (void) | |
4928 | { | |
4929 | int i; | |
4930 | ||
4931 | for (i = 0; i < PACKET_MAX; i++) | |
4932 | { | |
4933 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4934 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4935 | } | |
4936 | } | |
4937 | ||
23860348 | 4938 | /* Symbol look-up. */ |
dc8acb97 | 4939 | |
6b8edb51 PA |
4940 | void |
4941 | remote_target::remote_check_symbols () | |
dc8acb97 | 4942 | { |
8d64371b | 4943 | char *tmp; |
dc8acb97 MS |
4944 | int end; |
4945 | ||
63154eca PA |
4946 | /* The remote side has no concept of inferiors that aren't running |
4947 | yet, it only knows about running processes. If we're connected | |
4948 | but our current inferior is not running, we should not invite the | |
4949 | remote target to request symbol lookups related to its | |
4950 | (unrelated) current process. */ | |
55f6301a | 4951 | if (!target_has_execution ()) |
63154eca PA |
4952 | return; |
4953 | ||
4082afcc | 4954 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4955 | return; |
4956 | ||
63154eca PA |
4957 | /* Make sure the remote is pointing at the right process. Note |
4958 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4959 | set_general_process (); |
4960 | ||
6d820c5c DJ |
4961 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4962 | because we need both at the same time. */ | |
66644cd3 | 4963 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 4964 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 4965 | |
23860348 | 4966 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4967 | |
4968 | putpkt ("qSymbol::"); | |
8d64371b | 4969 | getpkt (&reply, 0); |
28170b88 | 4970 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 4971 | |
8d64371b | 4972 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 4973 | { |
77e371c0 TT |
4974 | struct bound_minimal_symbol sym; |
4975 | ||
dc8acb97 | 4976 | tmp = &reply[8]; |
66644cd3 AB |
4977 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
4978 | strlen (tmp) / 2); | |
dc8acb97 | 4979 | msg[end] = '\0'; |
66644cd3 | 4980 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 4981 | if (sym.minsym == NULL) |
66644cd3 AB |
4982 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
4983 | &reply[8]); | |
dc8acb97 | 4984 | else |
2bbe3cc1 | 4985 | { |
f5656ead | 4986 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4987 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4988 | |
4989 | /* If this is a function address, return the start of code | |
4990 | instead of any data function descriptor. */ | |
f5656ead | 4991 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4992 | sym_addr, |
8b88a78e | 4993 | current_top_target ()); |
2bbe3cc1 | 4994 | |
66644cd3 | 4995 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 4996 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 4997 | } |
66644cd3 AB |
4998 | |
4999 | putpkt (msg.data ()); | |
8d64371b | 5000 | getpkt (&reply, 0); |
dc8acb97 MS |
5001 | } |
5002 | } | |
5003 | ||
9db8d71f | 5004 | static struct serial * |
baa336ce | 5005 | remote_serial_open (const char *name) |
9db8d71f DJ |
5006 | { |
5007 | static int udp_warning = 0; | |
5008 | ||
5009 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5010 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5011 | serial connection is reliable and not the serial connection promising | |
5012 | to be. */ | |
61012eef | 5013 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5014 | { |
3e43a32a MS |
5015 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5016 | "Some events may be lost, rendering further debugging " | |
5017 | "impossible.")); | |
9db8d71f DJ |
5018 | udp_warning = 1; |
5019 | } | |
5020 | ||
5021 | return serial_open (name); | |
5022 | } | |
5023 | ||
d914c394 SS |
5024 | /* Inform the target of our permission settings. The permission flags |
5025 | work without this, but if the target knows the settings, it can do | |
5026 | a couple things. First, it can add its own check, to catch cases | |
5027 | that somehow manage to get by the permissions checks in target | |
5028 | methods. Second, if the target is wired to disallow particular | |
5029 | settings (for instance, a system in the field that is not set up to | |
5030 | be able to stop at a breakpoint), it can object to any unavailable | |
5031 | permissions. */ | |
5032 | ||
5033 | void | |
f6ac5f3d | 5034 | remote_target::set_permissions () |
d914c394 SS |
5035 | { |
5036 | struct remote_state *rs = get_remote_state (); | |
5037 | ||
8d64371b | 5038 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5039 | "WriteReg:%x;WriteMem:%x;" |
5040 | "InsertBreak:%x;InsertTrace:%x;" | |
5041 | "InsertFastTrace:%x;Stop:%x", | |
5042 | may_write_registers, may_write_memory, | |
5043 | may_insert_breakpoints, may_insert_tracepoints, | |
5044 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5045 | putpkt (rs->buf); |
8d64371b | 5046 | getpkt (&rs->buf, 0); |
d914c394 SS |
5047 | |
5048 | /* If the target didn't like the packet, warn the user. Do not try | |
5049 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5050 | if (strcmp (rs->buf.data (), "OK") != 0) |
5051 | warning (_("Remote refused setting permissions with: %s"), | |
5052 | rs->buf.data ()); | |
d914c394 SS |
5053 | } |
5054 | ||
be2a5f71 DJ |
5055 | /* This type describes each known response to the qSupported |
5056 | packet. */ | |
5057 | struct protocol_feature | |
5058 | { | |
5059 | /* The name of this protocol feature. */ | |
5060 | const char *name; | |
5061 | ||
5062 | /* The default for this protocol feature. */ | |
5063 | enum packet_support default_support; | |
5064 | ||
5065 | /* The function to call when this feature is reported, or after | |
5066 | qSupported processing if the feature is not supported. | |
5067 | The first argument points to this structure. The second | |
5068 | argument indicates whether the packet requested support be | |
5069 | enabled, disabled, or probed (or the default, if this function | |
5070 | is being called at the end of processing and this feature was | |
5071 | not reported). The third argument may be NULL; if not NULL, it | |
5072 | is a NUL-terminated string taken from the packet following | |
5073 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5074 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5075 | enum packet_support, const char *); | |
be2a5f71 DJ |
5076 | |
5077 | /* The corresponding packet for this feature. Only used if | |
5078 | FUNC is remote_supported_packet. */ | |
5079 | int packet; | |
5080 | }; | |
5081 | ||
be2a5f71 | 5082 | static void |
6b8edb51 PA |
5083 | remote_supported_packet (remote_target *remote, |
5084 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5085 | enum packet_support support, |
5086 | const char *argument) | |
5087 | { | |
5088 | if (argument) | |
5089 | { | |
5090 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5091 | " \"%s\"."), feature->name); | |
5092 | return; | |
5093 | } | |
5094 | ||
4082afcc | 5095 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5096 | } |
be2a5f71 | 5097 | |
6b8edb51 PA |
5098 | void |
5099 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5100 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5101 | { |
5102 | struct remote_state *rs = get_remote_state (); | |
5103 | ||
5104 | int packet_size; | |
5105 | char *value_end; | |
5106 | ||
5107 | if (support != PACKET_ENABLE) | |
5108 | return; | |
5109 | ||
5110 | if (value == NULL || *value == '\0') | |
5111 | { | |
5112 | warning (_("Remote target reported \"%s\" without a size."), | |
5113 | feature->name); | |
5114 | return; | |
5115 | } | |
5116 | ||
5117 | errno = 0; | |
5118 | packet_size = strtol (value, &value_end, 16); | |
5119 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5120 | { | |
5121 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5122 | feature->name, value); | |
5123 | return; | |
5124 | } | |
5125 | ||
be2a5f71 DJ |
5126 | /* Record the new maximum packet size. */ |
5127 | rs->explicit_packet_size = packet_size; | |
5128 | } | |
5129 | ||
cb8c24b6 | 5130 | static void |
6b8edb51 PA |
5131 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5132 | enum packet_support support, const char *value) | |
5133 | { | |
5134 | remote->remote_packet_size (feature, support, value); | |
5135 | } | |
5136 | ||
dc473cfb | 5137 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5138 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5139 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5140 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5141 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5142 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5143 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5144 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5145 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5146 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5147 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5148 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5149 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5150 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5151 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5152 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5153 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5154 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5155 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5156 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5157 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5158 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5159 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5160 | PACKET_QPassSignals }, | |
82075af2 JS |
5161 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5162 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5163 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5164 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5165 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5166 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5167 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5168 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5169 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5170 | PACKET_QEnvironmentHexEncoded }, | |
5171 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5172 | PACKET_QEnvironmentReset }, | |
5173 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5174 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5175 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5176 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5177 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5178 | PACKET_multiprocess_feature }, | |
5179 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5180 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5181 | PACKET_qXfer_siginfo_read }, | |
5182 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5183 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5184 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5185 | PACKET_ConditionalTracepoints }, |
4082afcc | 5186 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5187 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5188 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5189 | PACKET_BreakpointCommands }, |
4082afcc | 5190 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5191 | PACKET_FastTracepoints }, |
4082afcc | 5192 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5193 | PACKET_StaticTracepoints }, |
4082afcc | 5194 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5195 | PACKET_InstallInTrace}, |
4082afcc PA |
5196 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5197 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5198 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5199 | PACKET_bc }, | |
5200 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5201 | PACKET_bs }, | |
409873ef SS |
5202 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5203 | PACKET_TracepointSource }, | |
d914c394 SS |
5204 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5205 | PACKET_QAllow }, | |
4082afcc PA |
5206 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5207 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5208 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5209 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5210 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5211 | PACKET_qXfer_uib }, | |
03583c20 UW |
5212 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5213 | PACKET_QDisableRandomization }, | |
d1feda86 | 5214 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5215 | { "QTBuffer:size", PACKET_DISABLE, |
5216 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5217 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5218 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5219 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5220 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5221 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5222 | PACKET_qXfer_btrace }, |
5223 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5224 | PACKET_qXfer_btrace_conf }, |
5225 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5226 | PACKET_Qbtrace_conf_bts_size }, |
5227 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5228 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5229 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5230 | PACKET_fork_event_feature }, | |
5231 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5232 | PACKET_vfork_event_feature }, | |
94585166 DB |
5233 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5234 | PACKET_exec_event_feature }, | |
b20a6524 | 5235 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5236 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5237 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5238 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5239 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
5240 | }; |
5241 | ||
c8d5aac9 L |
5242 | static char *remote_support_xml; |
5243 | ||
5244 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5245 | ||
5246 | void | |
6e39997a | 5247 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5248 | { |
5249 | #if defined(HAVE_LIBEXPAT) | |
5250 | if (remote_support_xml == NULL) | |
c4f7c687 | 5251 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5252 | else |
5253 | { | |
5254 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5255 | char *saveptr; |
5256 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5257 | |
5258 | do | |
5259 | { | |
5260 | if (strcmp (p, xml) == 0) | |
5261 | { | |
5262 | /* already there */ | |
5263 | xfree (copy); | |
5264 | return; | |
5265 | } | |
5266 | } | |
ca3a04f6 | 5267 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5268 | xfree (copy); |
5269 | ||
94b0dee1 PA |
5270 | remote_support_xml = reconcat (remote_support_xml, |
5271 | remote_support_xml, ",", xml, | |
5272 | (char *) NULL); | |
c8d5aac9 L |
5273 | } |
5274 | #endif | |
5275 | } | |
5276 | ||
69b6ecb0 TT |
5277 | static void |
5278 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5279 | { |
69b6ecb0 TT |
5280 | if (!msg->empty ()) |
5281 | msg->append (";"); | |
5282 | msg->append (append); | |
c8d5aac9 L |
5283 | } |
5284 | ||
6b8edb51 PA |
5285 | void |
5286 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5287 | { |
5288 | struct remote_state *rs = get_remote_state (); | |
5289 | char *next; | |
5290 | int i; | |
5291 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5292 | ||
5293 | /* The packet support flags are handled differently for this packet | |
5294 | than for most others. We treat an error, a disabled packet, and | |
5295 | an empty response identically: any features which must be reported | |
5296 | to be used will be automatically disabled. An empty buffer | |
5297 | accomplishes this, since that is also the representation for a list | |
5298 | containing no features. */ | |
5299 | ||
5300 | rs->buf[0] = 0; | |
4082afcc | 5301 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5302 | { |
69b6ecb0 | 5303 | std::string q; |
c8d5aac9 | 5304 | |
73b8c1fd | 5305 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5306 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5307 | |
f7e6eed5 | 5308 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5309 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5310 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5311 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5312 | |
69b6ecb0 | 5313 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5314 | |
8020350c DB |
5315 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5316 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5317 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5318 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5319 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5320 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5321 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5322 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5323 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5324 | |
750ce8d1 | 5325 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5326 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5327 | |
65706a29 | 5328 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5329 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5330 | |
f2faf941 | 5331 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5332 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5333 | |
b35d5edb PA |
5334 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5335 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5336 | if (remote_support_xml != NULL |
5337 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5338 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5339 | |
69b6ecb0 TT |
5340 | q = "qSupported:" + q; |
5341 | putpkt (q.c_str ()); | |
94b0dee1 | 5342 | |
8d64371b | 5343 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5344 | |
5345 | /* If an error occured, warn, but do not return - just reset the | |
5346 | buffer to empty and go on to disable features. */ | |
5347 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5348 | == PACKET_ERROR) | |
5349 | { | |
8d64371b | 5350 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5351 | rs->buf[0] = 0; |
5352 | } | |
5353 | } | |
5354 | ||
5355 | memset (seen, 0, sizeof (seen)); | |
5356 | ||
8d64371b | 5357 | next = rs->buf.data (); |
be2a5f71 DJ |
5358 | while (*next) |
5359 | { | |
5360 | enum packet_support is_supported; | |
5361 | char *p, *end, *name_end, *value; | |
5362 | ||
5363 | /* First separate out this item from the rest of the packet. If | |
5364 | there's another item after this, we overwrite the separator | |
5365 | (terminated strings are much easier to work with). */ | |
5366 | p = next; | |
5367 | end = strchr (p, ';'); | |
5368 | if (end == NULL) | |
5369 | { | |
5370 | end = p + strlen (p); | |
5371 | next = end; | |
5372 | } | |
5373 | else | |
5374 | { | |
89be2091 DJ |
5375 | *end = '\0'; |
5376 | next = end + 1; | |
5377 | ||
be2a5f71 DJ |
5378 | if (end == p) |
5379 | { | |
5380 | warning (_("empty item in \"qSupported\" response")); | |
5381 | continue; | |
5382 | } | |
be2a5f71 DJ |
5383 | } |
5384 | ||
5385 | name_end = strchr (p, '='); | |
5386 | if (name_end) | |
5387 | { | |
5388 | /* This is a name=value entry. */ | |
5389 | is_supported = PACKET_ENABLE; | |
5390 | value = name_end + 1; | |
5391 | *name_end = '\0'; | |
5392 | } | |
5393 | else | |
5394 | { | |
5395 | value = NULL; | |
5396 | switch (end[-1]) | |
5397 | { | |
5398 | case '+': | |
5399 | is_supported = PACKET_ENABLE; | |
5400 | break; | |
5401 | ||
5402 | case '-': | |
5403 | is_supported = PACKET_DISABLE; | |
5404 | break; | |
5405 | ||
5406 | case '?': | |
5407 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5408 | break; | |
5409 | ||
5410 | default: | |
3e43a32a MS |
5411 | warning (_("unrecognized item \"%s\" " |
5412 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5413 | continue; |
5414 | } | |
5415 | end[-1] = '\0'; | |
5416 | } | |
5417 | ||
5418 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5419 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5420 | { | |
5421 | const struct protocol_feature *feature; | |
5422 | ||
5423 | seen[i] = 1; | |
5424 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5425 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5426 | break; |
5427 | } | |
5428 | } | |
5429 | ||
5430 | /* If we increased the packet size, make sure to increase the global | |
5431 | buffer size also. We delay this until after parsing the entire | |
5432 | qSupported packet, because this is the same buffer we were | |
5433 | parsing. */ | |
8d64371b TT |
5434 | if (rs->buf.size () < rs->explicit_packet_size) |
5435 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5436 | |
5437 | /* Handle the defaults for unmentioned features. */ | |
5438 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5439 | if (!seen[i]) | |
5440 | { | |
5441 | const struct protocol_feature *feature; | |
5442 | ||
5443 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5444 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5445 | } |
5446 | } | |
5447 | ||
048094ac PA |
5448 | /* Serial QUIT handler for the remote serial descriptor. |
5449 | ||
5450 | Defers handling a Ctrl-C until we're done with the current | |
5451 | command/response packet sequence, unless: | |
5452 | ||
5453 | - We're setting up the connection. Don't send a remote interrupt | |
5454 | request, as we're not fully synced yet. Quit immediately | |
5455 | instead. | |
5456 | ||
5457 | - The target has been resumed in the foreground | |
223ffa71 | 5458 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5459 | packet, and we're blocked waiting for the stop reply, thus a |
5460 | Ctrl-C should be immediately sent to the target. | |
5461 | ||
5462 | - We get a second Ctrl-C while still within the same serial read or | |
5463 | write. In that case the serial is seemingly wedged --- offer to | |
5464 | quit/disconnect. | |
5465 | ||
5466 | - We see a second Ctrl-C without target response, after having | |
5467 | previously interrupted the target. In that case the target/stub | |
5468 | is probably wedged --- offer to quit/disconnect. | |
5469 | */ | |
5470 | ||
6b8edb51 PA |
5471 | void |
5472 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5473 | { |
5474 | struct remote_state *rs = get_remote_state (); | |
5475 | ||
5476 | if (check_quit_flag ()) | |
5477 | { | |
5478 | /* If we're starting up, we're not fully synced yet. Quit | |
5479 | immediately. */ | |
5480 | if (rs->starting_up) | |
5481 | quit (); | |
5482 | else if (rs->got_ctrlc_during_io) | |
5483 | { | |
5484 | if (query (_("The target is not responding to GDB commands.\n" | |
5485 | "Stop debugging it? "))) | |
5b6d1e4f | 5486 | remote_unpush_and_throw (this); |
048094ac PA |
5487 | } |
5488 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5489 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5490 | interrupt_query (); |
5491 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5492 | an interrupt request. */ | |
223ffa71 | 5493 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5494 | target_interrupt (); |
048094ac PA |
5495 | else |
5496 | rs->got_ctrlc_during_io = 1; | |
5497 | } | |
5498 | } | |
5499 | ||
6b8edb51 PA |
5500 | /* The remote_target that is current while the quit handler is |
5501 | overridden with remote_serial_quit_handler. */ | |
5502 | static remote_target *curr_quit_handler_target; | |
5503 | ||
5504 | static void | |
5505 | remote_serial_quit_handler () | |
5506 | { | |
5507 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5508 | } | |
5509 | ||
5b6d1e4f PA |
5510 | /* Remove the remote target from the target stack of each inferior |
5511 | that is using it. Upper targets depend on it so remove them | |
5512 | first. */ | |
78a095c3 JK |
5513 | |
5514 | static void | |
5b6d1e4f | 5515 | remote_unpush_target (remote_target *target) |
78a095c3 | 5516 | { |
5b6d1e4f PA |
5517 | /* We have to unpush the target from all inferiors, even those that |
5518 | aren't running. */ | |
5519 | scoped_restore_current_inferior restore_current_inferior; | |
5520 | ||
5521 | for (inferior *inf : all_inferiors (target)) | |
5522 | { | |
5523 | switch_to_inferior_no_thread (inf); | |
5524 | pop_all_targets_at_and_above (process_stratum); | |
5525 | generic_mourn_inferior (); | |
5526 | } | |
78a095c3 | 5527 | } |
be2a5f71 | 5528 | |
048094ac | 5529 | static void |
5b6d1e4f | 5530 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5531 | { |
5b6d1e4f | 5532 | remote_unpush_target (target); |
048094ac PA |
5533 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5534 | } | |
5535 | ||
f6ac5f3d PA |
5536 | void |
5537 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5538 | { |
6b8edb51 | 5539 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5540 | |
c906108c | 5541 | if (name == 0) |
8a3fe4f8 | 5542 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5543 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5544 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5545 | |
2d717e4f | 5546 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5547 | Ask this question first, before target_preopen has a chance to kill |
5548 | anything. */ | |
55f6301a | 5549 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5550 | { |
78a095c3 JK |
5551 | if (from_tty |
5552 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5553 | error (_("Still connected.")); |
5554 | } | |
5555 | ||
78a095c3 | 5556 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5557 | target_preopen (from_tty); |
5558 | ||
ad9a8f3f | 5559 | remote_fileio_reset (); |
1dd41f16 NS |
5560 | reopen_exec_file (); |
5561 | reread_symbols (); | |
5562 | ||
6b8edb51 PA |
5563 | remote_target *remote |
5564 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5565 | target_ops_up target_holder (remote); | |
5566 | ||
5567 | remote_state *rs = remote->get_remote_state (); | |
5568 | ||
5569 | /* See FIXME above. */ | |
5570 | if (!target_async_permitted) | |
5571 | rs->wait_forever_enabled_p = 1; | |
5572 | ||
5d93a237 TT |
5573 | rs->remote_desc = remote_serial_open (name); |
5574 | if (!rs->remote_desc) | |
c906108c SS |
5575 | perror_with_name (name); |
5576 | ||
5577 | if (baud_rate != -1) | |
5578 | { | |
5d93a237 | 5579 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5580 | { |
9b74d5d3 KB |
5581 | /* The requested speed could not be set. Error out to |
5582 | top level after closing remote_desc. Take care to | |
5583 | set remote_desc to NULL to avoid closing remote_desc | |
5584 | more than once. */ | |
5d93a237 TT |
5585 | serial_close (rs->remote_desc); |
5586 | rs->remote_desc = NULL; | |
c906108c SS |
5587 | perror_with_name (name); |
5588 | } | |
5589 | } | |
5590 | ||
236af5e3 | 5591 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5592 | serial_raw (rs->remote_desc); |
c906108c SS |
5593 | |
5594 | /* If there is something sitting in the buffer we might take it as a | |
5595 | response to a command, which would be bad. */ | |
5d93a237 | 5596 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5597 | |
5598 | if (from_tty) | |
5599 | { | |
5600 | puts_filtered ("Remote debugging using "); | |
5601 | puts_filtered (name); | |
5602 | puts_filtered ("\n"); | |
5603 | } | |
d9f719f1 | 5604 | |
6b8edb51 | 5605 | /* Switch to using the remote target now. */ |
dea57a62 | 5606 | push_target (std::move (target_holder)); |
c906108c | 5607 | |
74531fed | 5608 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5609 | rs->remote_async_inferior_event_token |
db20ebdf SM |
5610 | = create_async_event_handler (remote_async_inferior_event_handler, remote, |
5611 | "remote"); | |
6b8edb51 | 5612 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 5613 | |
be2a5f71 DJ |
5614 | /* Reset the target state; these things will be queried either by |
5615 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5616 | reset_all_packet_configs_support (); |
74531fed | 5617 | rs->cached_wait_status = 0; |
be2a5f71 | 5618 | rs->explicit_packet_size = 0; |
a6f3e723 | 5619 | rs->noack_mode = 0; |
82f73884 | 5620 | rs->extended = extended_p; |
e24a49d8 | 5621 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5622 | rs->ctrlc_pending_p = 0; |
048094ac | 5623 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5624 | |
47f8a51d TT |
5625 | rs->general_thread = not_sent_ptid; |
5626 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5627 | rs->remote_traceframe_number = -1; |
c906108c | 5628 | |
3a00c802 PA |
5629 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5630 | ||
9d1f7ab2 | 5631 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5632 | rs->use_threadinfo_query = 1; |
5633 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5634 | |
dd194f6b | 5635 | rs->readahead_cache.invalidate (); |
80152258 | 5636 | |
c6ebd6cf | 5637 | if (target_async_permitted) |
92d1e331 | 5638 | { |
92d1e331 DJ |
5639 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5640 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5641 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5642 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5643 | around this. Eventually a mechanism that allows |
92d1e331 | 5644 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5645 | implemented. */ |
6b8edb51 | 5646 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5647 | } |
5648 | ||
23860348 | 5649 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5650 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5651 | |
36918e70 | 5652 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5653 | target (we'd otherwise be in an inconsistent state) and then |
5654 | propogate the error on up the exception chain. This ensures that | |
5655 | the caller doesn't stumble along blindly assuming that the | |
5656 | function succeeded. The CLI doesn't have this problem but other | |
5657 | UI's, such as MI do. | |
36918e70 AC |
5658 | |
5659 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5660 | this function should return an error indication letting the | |
ce2826aa | 5661 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5662 | ``target remote'' is directly wired to this function making that |
5663 | impossible. On a positive note, the CLI side of this problem has | |
5664 | been fixed - the function set_cmd_context() makes it possible for | |
5665 | all the ``target ....'' commands to share a common callback | |
5666 | function. See cli-dump.c. */ | |
109c3e39 | 5667 | { |
2d717e4f | 5668 | |
a70b8144 | 5669 | try |
04bd08de | 5670 | { |
6b8edb51 | 5671 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5672 | } |
230d2906 | 5673 | catch (const gdb_exception &ex) |
109c3e39 | 5674 | { |
c8d104ad PA |
5675 | /* Pop the partially set up target - unless something else did |
5676 | already before throwing the exception. */ | |
6b8edb51 | 5677 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5678 | remote_unpush_target (remote); |
eedc3f4f | 5679 | throw; |
109c3e39 AC |
5680 | } |
5681 | } | |
c906108c | 5682 | |
6b8edb51 | 5683 | remote_btrace_reset (rs); |
f4abbc16 | 5684 | |
c6ebd6cf | 5685 | if (target_async_permitted) |
6b8edb51 | 5686 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5687 | } |
5688 | ||
de0d863e DB |
5689 | /* Detach the specified process. */ |
5690 | ||
6b8edb51 PA |
5691 | void |
5692 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5693 | { |
5694 | struct remote_state *rs = get_remote_state (); | |
5695 | ||
4c7333b3 PA |
5696 | /* This should not be necessary, but the handling for D;PID in |
5697 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5698 | selected process points to the same process we're detaching, | |
5699 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5700 | does not. Since it's easy and cheap, work around it by forcing | |
5701 | GDBserver to select GDB's current process. */ | |
5702 | set_general_process (); | |
5703 | ||
de0d863e | 5704 | if (remote_multi_process_p (rs)) |
8d64371b | 5705 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5706 | else |
8d64371b | 5707 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5708 | |
5709 | putpkt (rs->buf); | |
8d64371b | 5710 | getpkt (&rs->buf, 0); |
de0d863e DB |
5711 | |
5712 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5713 | ; | |
5714 | else if (rs->buf[0] == '\0') | |
5715 | error (_("Remote doesn't know how to detach")); | |
5716 | else | |
5717 | error (_("Can't detach process.")); | |
5718 | } | |
5719 | ||
5720 | /* This detaches a program to which we previously attached, using | |
5721 | inferior_ptid to identify the process. After this is done, GDB | |
5722 | can be used to debug some other program. We better not have left | |
5723 | any breakpoints in the target program or it'll die when it hits | |
5724 | one. */ | |
c906108c | 5725 | |
6b8edb51 | 5726 | void |
00431a78 | 5727 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5728 | { |
e99b03dc | 5729 | int pid = inferior_ptid.pid (); |
d01949b6 | 5730 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5731 | int is_fork_parent; |
c906108c | 5732 | |
55f6301a | 5733 | if (!target_has_execution ()) |
2d717e4f DJ |
5734 | error (_("No process to detach from.")); |
5735 | ||
0f48b757 | 5736 | target_announce_detach (from_tty); |
7cee1e54 | 5737 | |
c906108c | 5738 | /* Tell the remote target to detach. */ |
de0d863e | 5739 | remote_detach_pid (pid); |
82f73884 | 5740 | |
8020350c | 5741 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5742 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
7cee1e54 | 5743 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5744 | |
5b6d1e4f | 5745 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 5746 | |
de0d863e DB |
5747 | /* Check to see if we are detaching a fork parent. Note that if we |
5748 | are detaching a fork child, tp == NULL. */ | |
5749 | is_fork_parent = (tp != NULL | |
5750 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5751 | ||
5752 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5753 | breakpoints that should be available for the followed inferior. */ | |
5754 | if (!is_fork_parent) | |
f67c0c91 | 5755 | { |
249b5733 PA |
5756 | /* Save the pid as a string before mourning, since that will |
5757 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5758 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5759 | |
5760 | target_mourn_inferior (inferior_ptid); | |
5761 | if (print_inferior_events) | |
5762 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5763 | inf->num, infpid.c_str ()); | |
5764 | } | |
de0d863e DB |
5765 | else |
5766 | { | |
0ac55310 | 5767 | switch_to_no_thread (); |
00431a78 | 5768 | detach_inferior (current_inferior ()); |
de0d863e | 5769 | } |
2d717e4f DJ |
5770 | } |
5771 | ||
f6ac5f3d PA |
5772 | void |
5773 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5774 | { |
00431a78 | 5775 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5776 | } |
5777 | ||
f6ac5f3d PA |
5778 | void |
5779 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5780 | { |
00431a78 | 5781 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5782 | } |
5783 | ||
5784 | /* Target follow-fork function for remote targets. On entry, and | |
5785 | at return, the current inferior is the fork parent. | |
5786 | ||
5787 | Note that although this is currently only used for extended-remote, | |
5788 | it is named remote_follow_fork in anticipation of using it for the | |
5789 | remote target as well. */ | |
5790 | ||
5ab2fbf1 SM |
5791 | bool |
5792 | remote_target::follow_fork (bool follow_child, bool detach_fork) | |
de0d863e DB |
5793 | { |
5794 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5795 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5796 | |
c269dbdb DB |
5797 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5798 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5799 | { |
5800 | /* When following the parent and detaching the child, we detach | |
5801 | the child here. For the case of following the child and | |
5802 | detaching the parent, the detach is done in the target- | |
5803 | independent follow fork code in infrun.c. We can't use | |
5804 | target_detach when detaching an unfollowed child because | |
5805 | the client side doesn't know anything about the child. */ | |
5806 | if (detach_fork && !follow_child) | |
5807 | { | |
5808 | /* Detach the fork child. */ | |
5809 | ptid_t child_ptid; | |
5810 | pid_t child_pid; | |
5811 | ||
5812 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5813 | child_pid = child_ptid.pid (); |
de0d863e DB |
5814 | |
5815 | remote_detach_pid (child_pid); | |
de0d863e DB |
5816 | } |
5817 | } | |
5ab2fbf1 SM |
5818 | |
5819 | return false; | |
c906108c SS |
5820 | } |
5821 | ||
94585166 DB |
5822 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5823 | in the program space of the new inferior. On entry and at return the | |
5824 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5825 | inferior, which may be the same as the exec'ing inferior unless | |
5826 | follow-exec-mode is "new". */ | |
5827 | ||
f6ac5f3d | 5828 | void |
4ca51187 | 5829 | remote_target::follow_exec (struct inferior *inf, const char *execd_pathname) |
94585166 DB |
5830 | { |
5831 | /* We know that this is a target file name, so if it has the "target:" | |
5832 | prefix we strip it off before saving it in the program space. */ | |
5833 | if (is_target_filename (execd_pathname)) | |
5834 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5835 | ||
5836 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5837 | } | |
5838 | ||
6ad8ae5c DJ |
5839 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5840 | ||
f6ac5f3d PA |
5841 | void |
5842 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5843 | { |
43ff13b4 | 5844 | if (args) |
2d717e4f | 5845 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5846 | |
8020350c | 5847 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
5848 | target_mourn_inferior won't unpush, and |
5849 | remote_target::mourn_inferior won't unpush if there is more than | |
5850 | one inferior left. */ | |
5851 | remote_unpush_target (this); | |
2d717e4f | 5852 | |
43ff13b4 JM |
5853 | if (from_tty) |
5854 | puts_filtered ("Ending remote debugging.\n"); | |
5855 | } | |
5856 | ||
2d717e4f DJ |
5857 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5858 | be chatty about it. */ | |
5859 | ||
f6ac5f3d PA |
5860 | void |
5861 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5862 | { |
5863 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5864 | int pid; |
96ef3384 | 5865 | char *wait_status = NULL; |
2d717e4f | 5866 | |
74164c56 | 5867 | pid = parse_pid_to_attach (args); |
2d717e4f | 5868 | |
74164c56 JK |
5869 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5870 | way as in other targets. */ | |
2d717e4f | 5871 | |
4082afcc | 5872 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5873 | error (_("This target does not support attaching to a process")); |
5874 | ||
7cee1e54 PA |
5875 | if (from_tty) |
5876 | { | |
d9fa87f4 | 5877 | const char *exec_file = get_exec_file (0); |
7cee1e54 PA |
5878 | |
5879 | if (exec_file) | |
5880 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 5881 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5882 | else |
5883 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 5884 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5885 | } |
5886 | ||
8d64371b | 5887 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 5888 | putpkt (rs->buf); |
8d64371b | 5889 | getpkt (&rs->buf, 0); |
2d717e4f | 5890 | |
4082afcc PA |
5891 | switch (packet_ok (rs->buf, |
5892 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5893 | { |
4082afcc | 5894 | case PACKET_OK: |
6efcd9a8 | 5895 | if (!target_is_non_stop_p ()) |
74531fed PA |
5896 | { |
5897 | /* Save the reply for later. */ | |
8d64371b TT |
5898 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5899 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 5900 | } |
8d64371b | 5901 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5902 | error (_("Attaching to %s failed with: %s"), |
a068643d | 5903 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 5904 | rs->buf.data ()); |
4082afcc PA |
5905 | break; |
5906 | case PACKET_UNKNOWN: | |
5907 | error (_("This target does not support attaching to a process")); | |
5908 | default: | |
50fa3001 SDJ |
5909 | error (_("Attaching to %s failed"), |
5910 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 5911 | } |
2d717e4f | 5912 | |
0ac55310 | 5913 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 5914 | |
f2907e49 | 5915 | inferior_ptid = ptid_t (pid); |
79d7f229 | 5916 | |
6efcd9a8 | 5917 | if (target_is_non_stop_p ()) |
bad34192 | 5918 | { |
bad34192 | 5919 | /* Get list of threads. */ |
f6ac5f3d | 5920 | update_thread_list (); |
82f73884 | 5921 | |
0ac55310 PA |
5922 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
5923 | if (thread != nullptr) | |
5924 | switch_to_thread (thread); | |
bad34192 PA |
5925 | |
5926 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5927 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5928 | } |
74531fed | 5929 | else |
bad34192 | 5930 | { |
0ac55310 PA |
5931 | /* Now, if we have thread information, update the main thread's |
5932 | ptid. */ | |
5933 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 PA |
5934 | |
5935 | /* Add the main thread to the thread list. */ | |
0ac55310 PA |
5936 | thread_info *thr = add_thread_silent (this, curr_ptid); |
5937 | ||
5938 | switch_to_thread (thr); | |
5939 | ||
00aecdcf PA |
5940 | /* Don't consider the thread stopped until we've processed the |
5941 | saved stop reply. */ | |
5b6d1e4f | 5942 | set_executing (this, thr->ptid, true); |
bad34192 | 5943 | } |
c0a2216e | 5944 | |
96ef3384 UW |
5945 | /* Next, if the target can specify a description, read it. We do |
5946 | this before anything involving memory or registers. */ | |
5947 | target_find_description (); | |
5948 | ||
6efcd9a8 | 5949 | if (!target_is_non_stop_p ()) |
74531fed PA |
5950 | { |
5951 | /* Use the previously fetched status. */ | |
5952 | gdb_assert (wait_status != NULL); | |
5953 | ||
5954 | if (target_can_async_p ()) | |
5955 | { | |
722247f1 | 5956 | struct notif_event *reply |
6b8edb51 | 5957 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 5958 | |
722247f1 | 5959 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5960 | |
6a3753b3 | 5961 | target_async (1); |
74531fed PA |
5962 | } |
5963 | else | |
5964 | { | |
5965 | gdb_assert (wait_status != NULL); | |
8d64371b | 5966 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
5967 | rs->cached_wait_status = 1; |
5968 | } | |
5969 | } | |
5970 | else | |
5971 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5972 | } |
5973 | ||
b9c1d481 AS |
5974 | /* Implementation of the to_post_attach method. */ |
5975 | ||
f6ac5f3d PA |
5976 | void |
5977 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5978 | { |
6efcd9a8 PA |
5979 | /* Get text, data & bss offsets. */ |
5980 | get_offsets (); | |
5981 | ||
b9c1d481 AS |
5982 | /* In certain cases GDB might not have had the chance to start |
5983 | symbol lookup up until now. This could happen if the debugged | |
5984 | binary is not using shared libraries, the vsyscall page is not | |
5985 | present (on Linux) and the binary itself hadn't changed since the | |
5986 | debugging process was started. */ | |
a42d7dd8 | 5987 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
5988 | remote_check_symbols(); |
5989 | } | |
5990 | ||
c906108c | 5991 | \f |
506fb367 DJ |
5992 | /* Check for the availability of vCont. This function should also check |
5993 | the response. */ | |
c906108c | 5994 | |
6b8edb51 PA |
5995 | void |
5996 | remote_target::remote_vcont_probe () | |
c906108c | 5997 | { |
6b8edb51 | 5998 | remote_state *rs = get_remote_state (); |
2e9f7625 | 5999 | char *buf; |
6d820c5c | 6000 | |
8d64371b | 6001 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6002 | putpkt (rs->buf); |
8d64371b TT |
6003 | getpkt (&rs->buf, 0); |
6004 | buf = rs->buf.data (); | |
c906108c | 6005 | |
506fb367 | 6006 | /* Make sure that the features we assume are supported. */ |
61012eef | 6007 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6008 | { |
6009 | char *p = &buf[5]; | |
750ce8d1 | 6010 | int support_c, support_C; |
506fb367 | 6011 | |
750ce8d1 YQ |
6012 | rs->supports_vCont.s = 0; |
6013 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6014 | support_c = 0; |
6015 | support_C = 0; | |
d458bd84 | 6016 | rs->supports_vCont.t = 0; |
c1e36e3e | 6017 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6018 | while (p && *p == ';') |
6019 | { | |
6020 | p++; | |
6021 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6022 | rs->supports_vCont.s = 1; |
506fb367 | 6023 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6024 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6025 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6026 | support_c = 1; | |
6027 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6028 | support_C = 1; | |
74531fed | 6029 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6030 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6031 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6032 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6033 | |
6034 | p = strchr (p, ';'); | |
6035 | } | |
c906108c | 6036 | |
750ce8d1 YQ |
6037 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6038 | BUF will make packet_ok disable the packet. */ | |
6039 | if (!support_c || !support_C) | |
506fb367 DJ |
6040 | buf[0] = 0; |
6041 | } | |
c906108c | 6042 | |
8d64371b | 6043 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6044 | rs->supports_vCont_probed = true; |
506fb367 | 6045 | } |
c906108c | 6046 | |
0d8f58ca PA |
6047 | /* Helper function for building "vCont" resumptions. Write a |
6048 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6049 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6050 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6051 | resumed thread should be single-stepped and/or signalled. If PTID | |
6052 | equals minus_one_ptid, then all threads are resumed; if PTID | |
6053 | represents a process, then all threads of the process are resumed; | |
6054 | the thread to be stepped and/or signalled is given in the global | |
6055 | INFERIOR_PTID. */ | |
6056 | ||
6b8edb51 PA |
6057 | char * |
6058 | remote_target::append_resumption (char *p, char *endp, | |
6059 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6060 | { |
6061 | struct remote_state *rs = get_remote_state (); | |
6062 | ||
a493e3e2 | 6063 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6064 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6065 | else if (step |
6066 | /* GDB is willing to range step. */ | |
6067 | && use_range_stepping | |
6068 | /* Target supports range stepping. */ | |
6069 | && rs->supports_vCont.r | |
6070 | /* We don't currently support range stepping multiple | |
6071 | threads with a wildcard (though the protocol allows it, | |
6072 | so stubs shouldn't make an active effort to forbid | |
6073 | it). */ | |
0e998d96 | 6074 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6075 | { |
6076 | struct thread_info *tp; | |
6077 | ||
d7e15655 | 6078 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6079 | { |
6080 | /* If we don't know about the target thread's tid, then | |
6081 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6082 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6083 | } |
6084 | else | |
5b6d1e4f | 6085 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6086 | gdb_assert (tp != NULL); |
6087 | ||
6088 | if (tp->control.may_range_step) | |
6089 | { | |
6090 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6091 | ||
6092 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6093 | phex_nz (tp->control.step_range_start, | |
6094 | addr_size), | |
6095 | phex_nz (tp->control.step_range_end, | |
6096 | addr_size)); | |
6097 | } | |
6098 | else | |
6099 | p += xsnprintf (p, endp - p, ";s"); | |
6100 | } | |
0d8f58ca PA |
6101 | else if (step) |
6102 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6103 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6104 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6105 | else | |
6106 | p += xsnprintf (p, endp - p, ";c"); | |
6107 | ||
0e998d96 | 6108 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6109 | { |
6110 | ptid_t nptid; | |
6111 | ||
6112 | /* All (-1) threads of process. */ | |
e99b03dc | 6113 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6114 | |
6115 | p += xsnprintf (p, endp - p, ":"); | |
6116 | p = write_ptid (p, endp, nptid); | |
6117 | } | |
d7e15655 | 6118 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6119 | { |
6120 | p += xsnprintf (p, endp - p, ":"); | |
6121 | p = write_ptid (p, endp, ptid); | |
6122 | } | |
6123 | ||
6124 | return p; | |
6125 | } | |
6126 | ||
799a2abe PA |
6127 | /* Clear the thread's private info on resume. */ |
6128 | ||
6129 | static void | |
6130 | resume_clear_thread_private_info (struct thread_info *thread) | |
6131 | { | |
6132 | if (thread->priv != NULL) | |
6133 | { | |
7aabaf9d SM |
6134 | remote_thread_info *priv = get_remote_thread_info (thread); |
6135 | ||
6136 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6137 | priv->watch_data_address = 0; | |
799a2abe PA |
6138 | } |
6139 | } | |
6140 | ||
e5ef252a PA |
6141 | /* Append a vCont continue-with-signal action for threads that have a |
6142 | non-zero stop signal. */ | |
6143 | ||
6b8edb51 PA |
6144 | char * |
6145 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6146 | ptid_t ptid) | |
e5ef252a | 6147 | { |
5b6d1e4f | 6148 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6149 | if (inferior_ptid != thread->ptid |
70509625 | 6150 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6151 | { |
6152 | p = append_resumption (p, endp, thread->ptid, | |
6153 | 0, thread->suspend.stop_signal); | |
6154 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6155 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6156 | } |
6157 | ||
6158 | return p; | |
6159 | } | |
6160 | ||
7b68ffbb PA |
6161 | /* Set the target running, using the packets that use Hc |
6162 | (c/s/C/S). */ | |
6163 | ||
6b8edb51 PA |
6164 | void |
6165 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6166 | gdb_signal siggnal) | |
7b68ffbb PA |
6167 | { |
6168 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6169 | char *buf; |
6170 | ||
6171 | rs->last_sent_signal = siggnal; | |
6172 | rs->last_sent_step = step; | |
6173 | ||
6174 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6175 | thread. */ | |
d7e15655 | 6176 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6177 | set_continue_thread (any_thread_ptid); |
6178 | else | |
6179 | set_continue_thread (ptid); | |
6180 | ||
5b6d1e4f | 6181 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6182 | resume_clear_thread_private_info (thread); |
6183 | ||
8d64371b | 6184 | buf = rs->buf.data (); |
6b8edb51 | 6185 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6186 | { |
6187 | /* We don't pass signals to the target in reverse exec mode. */ | |
6188 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6189 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6190 | siggnal); | |
6191 | ||
6192 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6193 | error (_("Remote reverse-step not supported.")); | |
6194 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6195 | error (_("Remote reverse-continue not supported.")); | |
6196 | ||
6197 | strcpy (buf, step ? "bs" : "bc"); | |
6198 | } | |
6199 | else if (siggnal != GDB_SIGNAL_0) | |
6200 | { | |
6201 | buf[0] = step ? 'S' : 'C'; | |
6202 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6203 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6204 | buf[3] = '\0'; | |
6205 | } | |
6206 | else | |
6207 | strcpy (buf, step ? "s" : "c"); | |
6208 | ||
6209 | putpkt (buf); | |
6210 | } | |
6211 | ||
506fb367 DJ |
6212 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6213 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6214 | resumed thread should be single-stepped and/or signalled. If PTID |
6215 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6216 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6217 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6218 | |
7b68ffbb PA |
6219 | This function issues a strict subset of all possible vCont commands |
6220 | at the moment. */ | |
44eaed12 | 6221 | |
6b8edb51 PA |
6222 | int |
6223 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6224 | enum gdb_signal siggnal) | |
506fb367 DJ |
6225 | { |
6226 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6227 | char *p; |
6228 | char *endp; | |
44eaed12 | 6229 | |
7b68ffbb | 6230 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6231 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6232 | return 0; |
6233 | ||
4082afcc | 6234 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6235 | remote_vcont_probe (); |
44eaed12 | 6236 | |
4082afcc | 6237 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6238 | return 0; |
44eaed12 | 6239 | |
8d64371b TT |
6240 | p = rs->buf.data (); |
6241 | endp = p + get_remote_packet_size (); | |
82f73884 | 6242 | |
506fb367 DJ |
6243 | /* If we could generate a wider range of packets, we'd have to worry |
6244 | about overflowing BUF. Should there be a generic | |
6245 | "multi-part-packet" packet? */ | |
6246 | ||
0d8f58ca PA |
6247 | p += xsnprintf (p, endp - p, "vCont"); |
6248 | ||
d7e15655 | 6249 | if (ptid == magic_null_ptid) |
c906108c | 6250 | { |
79d7f229 PA |
6251 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6252 | so we don't have any TID numbers the inferior will | |
6253 | understand. Make sure to only send forms that do not specify | |
6254 | a TID. */ | |
a9cbf802 | 6255 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6256 | } |
d7e15655 | 6257 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6258 | { |
0d8f58ca PA |
6259 | /* Resume all threads (of all processes, or of a single |
6260 | process), with preference for INFERIOR_PTID. This assumes | |
6261 | inferior_ptid belongs to the set of all threads we are about | |
6262 | to resume. */ | |
a493e3e2 | 6263 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6264 | { |
0d8f58ca PA |
6265 | /* Step inferior_ptid, with or without signal. */ |
6266 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6267 | } |
0d8f58ca | 6268 | |
e5ef252a PA |
6269 | /* Also pass down any pending signaled resumption for other |
6270 | threads not the current. */ | |
6271 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6272 | ||
0d8f58ca | 6273 | /* And continue others without a signal. */ |
a493e3e2 | 6274 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6275 | } |
6276 | else | |
506fb367 DJ |
6277 | { |
6278 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6279 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6280 | } |
c906108c | 6281 | |
8d64371b | 6282 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6283 | putpkt (rs->buf); |
506fb367 | 6284 | |
6efcd9a8 | 6285 | if (target_is_non_stop_p ()) |
74531fed PA |
6286 | { |
6287 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6288 | reply will be reported asynchronously by means of a `%Stop' | |
6289 | notification. */ | |
8d64371b TT |
6290 | getpkt (&rs->buf, 0); |
6291 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6292 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6293 | rs->buf.data ()); | |
74531fed PA |
6294 | } |
6295 | ||
506fb367 | 6296 | return 1; |
c906108c | 6297 | } |
43ff13b4 | 6298 | |
506fb367 DJ |
6299 | /* Tell the remote machine to resume. */ |
6300 | ||
f6ac5f3d PA |
6301 | void |
6302 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6303 | { |
d01949b6 | 6304 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6305 | |
85ad3aaf PA |
6306 | /* When connected in non-stop mode, the core resumes threads |
6307 | individually. Resuming remote threads directly in target_resume | |
6308 | would thus result in sending one packet per thread. Instead, to | |
6309 | minimize roundtrip latency, here we just store the resume | |
6310 | request; the actual remote resumption will be done in | |
6311 | target_commit_resume / remote_commit_resume, where we'll be able | |
6312 | to do vCont action coalescing. */ | |
f6ac5f3d | 6313 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6314 | { |
7aabaf9d | 6315 | remote_thread_info *remote_thr; |
85ad3aaf | 6316 | |
d7e15655 | 6317 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
5b6d1e4f | 6318 | remote_thr = get_remote_thread_info (this, inferior_ptid); |
85ad3aaf | 6319 | else |
5b6d1e4f | 6320 | remote_thr = get_remote_thread_info (this, ptid); |
7aabaf9d | 6321 | |
85ad3aaf PA |
6322 | remote_thr->last_resume_step = step; |
6323 | remote_thr->last_resume_sig = siggnal; | |
6324 | return; | |
6325 | } | |
6326 | ||
722247f1 YQ |
6327 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6328 | (explained in remote-notif.c:handle_notification) so | |
6329 | remote_notif_process is not called. We need find a place where | |
6330 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6331 | before resuming inferior, because inferior was stopped and no RSP | |
6332 | traffic at that moment. */ | |
6efcd9a8 | 6333 | if (!target_is_non_stop_p ()) |
5965e028 | 6334 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6335 | |
f6ac5f3d | 6336 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6337 | |
7b68ffbb PA |
6338 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6339 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6340 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6341 | |
2acceee2 | 6342 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6343 | with the event loop. NOTE: this is the one place where all the |
6344 | execution commands end up. We could alternatively do this in each | |
23860348 | 6345 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6346 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6347 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6348 | NOT asynchronously. */ |
362646f5 | 6349 | if (target_can_async_p ()) |
6a3753b3 | 6350 | target_async (1); |
e24a49d8 PA |
6351 | |
6352 | /* We've just told the target to resume. The remote server will | |
6353 | wait for the inferior to stop, and then send a stop reply. In | |
6354 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6355 | because the stub wouldn't be ready to process it. This applies |
6356 | only to the base all-stop protocol, however. In non-stop (which | |
6357 | only supports vCont), the stub replies with an "OK", and is | |
6358 | immediate able to process further serial input. */ | |
6efcd9a8 | 6359 | if (!target_is_non_stop_p ()) |
74531fed | 6360 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6361 | } |
85ad3aaf | 6362 | |
85ad3aaf PA |
6363 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6364 | ||
6365 | /* Private per-inferior info for target remote processes. */ | |
6366 | ||
089354bb | 6367 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6368 | { |
6369 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6370 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6371 | }; |
6372 | ||
089354bb SM |
6373 | /* Get the remote private inferior data associated to INF. */ |
6374 | ||
6375 | static remote_inferior * | |
6376 | get_remote_inferior (inferior *inf) | |
6377 | { | |
6378 | if (inf->priv == NULL) | |
6379 | inf->priv.reset (new remote_inferior); | |
6380 | ||
6381 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6382 | } | |
6383 | ||
f5db4863 | 6384 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6385 | outgoing packet buffer. This is used to send multiple vCont |
6386 | packets if we have more actions than would fit a single packet. */ | |
6387 | ||
f5db4863 | 6388 | class vcont_builder |
85ad3aaf | 6389 | { |
f5db4863 | 6390 | public: |
6b8edb51 PA |
6391 | explicit vcont_builder (remote_target *remote) |
6392 | : m_remote (remote) | |
f5db4863 PA |
6393 | { |
6394 | restart (); | |
6395 | } | |
6396 | ||
6397 | void flush (); | |
6398 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6399 | ||
6400 | private: | |
6401 | void restart (); | |
6402 | ||
6b8edb51 PA |
6403 | /* The remote target. */ |
6404 | remote_target *m_remote; | |
6405 | ||
85ad3aaf PA |
6406 | /* Pointer to the first action. P points here if no action has been |
6407 | appended yet. */ | |
f5db4863 | 6408 | char *m_first_action; |
85ad3aaf PA |
6409 | |
6410 | /* Where the next action will be appended. */ | |
f5db4863 | 6411 | char *m_p; |
85ad3aaf PA |
6412 | |
6413 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6414 | char *m_endp; |
85ad3aaf PA |
6415 | }; |
6416 | ||
6417 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6418 | ||
f5db4863 PA |
6419 | void |
6420 | vcont_builder::restart () | |
85ad3aaf | 6421 | { |
6b8edb51 | 6422 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6423 | |
8d64371b TT |
6424 | m_p = rs->buf.data (); |
6425 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6426 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6427 | m_first_action = m_p; | |
85ad3aaf PA |
6428 | } |
6429 | ||
6430 | /* If the vCont packet being built has any action, send it to the | |
6431 | remote end. */ | |
6432 | ||
f5db4863 PA |
6433 | void |
6434 | vcont_builder::flush () | |
85ad3aaf PA |
6435 | { |
6436 | struct remote_state *rs; | |
6437 | ||
f5db4863 | 6438 | if (m_p == m_first_action) |
85ad3aaf PA |
6439 | return; |
6440 | ||
6b8edb51 PA |
6441 | rs = m_remote->get_remote_state (); |
6442 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6443 | m_remote->getpkt (&rs->buf, 0); |
6444 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6445 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6446 | } |
6447 | ||
6448 | /* The largest action is range-stepping, with its two addresses. This | |
6449 | is more than sufficient. If a new, bigger action is created, it'll | |
6450 | quickly trigger a failed assertion in append_resumption (and we'll | |
6451 | just bump this). */ | |
6452 | #define MAX_ACTION_SIZE 200 | |
6453 | ||
6454 | /* Append a new vCont action in the outgoing packet being built. If | |
6455 | the action doesn't fit the packet along with previous actions, push | |
6456 | what we've got so far to the remote end and start over a new vCont | |
6457 | packet (with the new action). */ | |
6458 | ||
f5db4863 PA |
6459 | void |
6460 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6461 | { |
6462 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6463 | |
6b8edb51 PA |
6464 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6465 | ptid, step, siggnal); | |
85ad3aaf PA |
6466 | |
6467 | /* Check whether this new action would fit in the vCont packet along | |
6468 | with previous actions. If not, send what we've got so far and | |
6469 | start a new vCont packet. */ | |
f5db4863 PA |
6470 | size_t rsize = endp - buf; |
6471 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6472 | { |
f5db4863 PA |
6473 | flush (); |
6474 | restart (); | |
85ad3aaf PA |
6475 | |
6476 | /* Should now fit. */ | |
f5db4863 | 6477 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6478 | } |
6479 | ||
f5db4863 PA |
6480 | memcpy (m_p, buf, rsize); |
6481 | m_p += rsize; | |
6482 | *m_p = '\0'; | |
85ad3aaf PA |
6483 | } |
6484 | ||
6485 | /* to_commit_resume implementation. */ | |
6486 | ||
f6ac5f3d PA |
6487 | void |
6488 | remote_target::commit_resume () | |
85ad3aaf | 6489 | { |
85ad3aaf PA |
6490 | int any_process_wildcard; |
6491 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6492 | |
6493 | /* If connected in all-stop mode, we'd send the remote resume | |
6494 | request directly from remote_resume. Likewise if | |
6495 | reverse-debugging, as there are no defined vCont actions for | |
6496 | reverse execution. */ | |
f6ac5f3d | 6497 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6498 | return; |
6499 | ||
6500 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6501 | instead of resuming all threads of each process individually. | |
6502 | However, if any thread of a process must remain halted, we can't | |
6503 | send wildcard resumes and must send one action per thread. | |
6504 | ||
6505 | Care must be taken to not resume threads/processes the server | |
6506 | side already told us are stopped, but the core doesn't know about | |
6507 | yet, because the events are still in the vStopped notification | |
6508 | queue. For example: | |
6509 | ||
6510 | #1 => vCont s:p1.1;c | |
6511 | #2 <= OK | |
6512 | #3 <= %Stopped T05 p1.1 | |
6513 | #4 => vStopped | |
6514 | #5 <= T05 p1.2 | |
6515 | #6 => vStopped | |
6516 | #7 <= OK | |
6517 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6518 | #9 => vCont s:p1.1;c | |
6519 | ||
6520 | The last vCont above would resume thread p1.2 by mistake, because | |
6521 | the server has no idea that the event for p1.2 had not been | |
6522 | handled yet. | |
6523 | ||
6524 | The server side must similarly ignore resume actions for the | |
6525 | thread that has a pending %Stopped notification (and any other | |
6526 | threads with events pending), until GDB acks the notification | |
6527 | with vStopped. Otherwise, e.g., the following case is | |
6528 | mishandled: | |
6529 | ||
6530 | #1 => g (or any other packet) | |
6531 | #2 <= [registers] | |
6532 | #3 <= %Stopped T05 p1.2 | |
6533 | #4 => vCont s:p1.1;c | |
6534 | #5 <= OK | |
6535 | ||
6536 | Above, the server must not resume thread p1.2. GDB can't know | |
6537 | that p1.2 stopped until it acks the %Stopped notification, and | |
6538 | since from GDB's perspective all threads should be running, it | |
6539 | sends a "c" action. | |
6540 | ||
6541 | Finally, special care must also be given to handling fork/vfork | |
6542 | events. A (v)fork event actually tells us that two processes | |
6543 | stopped -- the parent and the child. Until we follow the fork, | |
6544 | we must not resume the child. Therefore, if we have a pending | |
6545 | fork follow, we must not send a global wildcard resume action | |
6546 | (vCont;c). We can still send process-wide wildcards though. */ | |
6547 | ||
6548 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6549 | may_global_wildcard_vcont = 1; | |
6550 | ||
6551 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6552 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6553 | { |
089354bb SM |
6554 | remote_inferior *priv = get_remote_inferior (inf); |
6555 | ||
6556 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6557 | } |
6558 | ||
6559 | /* Check for any pending events (not reported or processed yet) and | |
6560 | disable process and global wildcard resumes appropriately. */ | |
6561 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6562 | ||
5b6d1e4f | 6563 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf PA |
6564 | { |
6565 | /* If a thread of a process is not meant to be resumed, then we | |
6566 | can't wildcard that process. */ | |
6567 | if (!tp->executing) | |
6568 | { | |
089354bb | 6569 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6570 | |
6571 | /* And if we can't wildcard a process, we can't wildcard | |
6572 | everything either. */ | |
6573 | may_global_wildcard_vcont = 0; | |
6574 | continue; | |
6575 | } | |
6576 | ||
6577 | /* If a thread is the parent of an unfollowed fork, then we | |
6578 | can't do a global wildcard, as that would resume the fork | |
6579 | child. */ | |
6580 | if (is_pending_fork_parent_thread (tp)) | |
6581 | may_global_wildcard_vcont = 0; | |
6582 | } | |
6583 | ||
6584 | /* Now let's build the vCont packet(s). Actions must be appended | |
6585 | from narrower to wider scopes (thread -> process -> global). If | |
6586 | we end up with too many actions for a single packet vcont_builder | |
6587 | flushes the current vCont packet to the remote side and starts a | |
6588 | new one. */ | |
6b8edb51 | 6589 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6590 | |
6591 | /* Threads first. */ | |
5b6d1e4f | 6592 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6593 | { |
7aabaf9d | 6594 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6595 | |
6596 | if (!tp->executing || remote_thr->vcont_resumed) | |
6597 | continue; | |
6598 | ||
6599 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6600 | ||
6601 | if (!remote_thr->last_resume_step | |
6602 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6603 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6604 | { |
6605 | /* We'll send a wildcard resume instead. */ | |
6606 | remote_thr->vcont_resumed = 1; | |
6607 | continue; | |
6608 | } | |
6609 | ||
f5db4863 | 6610 | vcont_builder.push_action (tp->ptid, |
85ad3aaf PA |
6611 | remote_thr->last_resume_step, |
6612 | remote_thr->last_resume_sig); | |
6613 | remote_thr->vcont_resumed = 1; | |
6614 | } | |
6615 | ||
6616 | /* Now check whether we can send any process-wide wildcard. This is | |
6617 | to avoid sending a global wildcard in the case nothing is | |
6618 | supposed to be resumed. */ | |
6619 | any_process_wildcard = 0; | |
6620 | ||
5b6d1e4f | 6621 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6622 | { |
089354bb | 6623 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6624 | { |
6625 | any_process_wildcard = 1; | |
6626 | break; | |
6627 | } | |
6628 | } | |
6629 | ||
6630 | if (any_process_wildcard) | |
6631 | { | |
6632 | /* If all processes are wildcard-able, then send a single "c" | |
6633 | action, otherwise, send an "all (-1) threads of process" | |
6634 | continue action for each running process, if any. */ | |
6635 | if (may_global_wildcard_vcont) | |
6636 | { | |
f5db4863 PA |
6637 | vcont_builder.push_action (minus_one_ptid, |
6638 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6639 | } |
6640 | else | |
6641 | { | |
5b6d1e4f | 6642 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6643 | { |
089354bb | 6644 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6645 | { |
f2907e49 | 6646 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6647 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6648 | } |
6649 | } | |
6650 | } | |
6651 | } | |
6652 | ||
f5db4863 | 6653 | vcont_builder.flush (); |
85ad3aaf PA |
6654 | } |
6655 | ||
c906108c | 6656 | \f |
43ff13b4 | 6657 | |
74531fed PA |
6658 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6659 | thread, all threads of a remote process, or all threads of all | |
6660 | processes. */ | |
6661 | ||
6b8edb51 PA |
6662 | void |
6663 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6664 | { |
6665 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6666 | char *p = rs->buf.data (); |
6667 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6668 | |
5b6d1e4f PA |
6669 | /* FIXME: This supports_vCont_probed check is a workaround until |
6670 | packet_support is per-connection. */ | |
6671 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
6672 | || !rs->supports_vCont_probed) | |
6b8edb51 | 6673 | remote_vcont_probe (); |
74531fed | 6674 | |
d458bd84 | 6675 | if (!rs->supports_vCont.t) |
74531fed PA |
6676 | error (_("Remote server does not support stopping threads")); |
6677 | ||
d7e15655 | 6678 | if (ptid == minus_one_ptid |
0e998d96 | 6679 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6680 | p += xsnprintf (p, endp - p, "vCont;t"); |
6681 | else | |
6682 | { | |
6683 | ptid_t nptid; | |
6684 | ||
74531fed PA |
6685 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6686 | ||
0e998d96 | 6687 | if (ptid.is_pid ()) |
74531fed | 6688 | /* All (-1) threads of process. */ |
e99b03dc | 6689 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6690 | else |
6691 | { | |
6692 | /* Small optimization: if we already have a stop reply for | |
6693 | this thread, no use in telling the stub we want this | |
6694 | stopped. */ | |
6695 | if (peek_stop_reply (ptid)) | |
6696 | return; | |
6697 | ||
6698 | nptid = ptid; | |
6699 | } | |
6700 | ||
a9cbf802 | 6701 | write_ptid (p, endp, nptid); |
74531fed PA |
6702 | } |
6703 | ||
6704 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6705 | come in asynchronously by notification. */ | |
6706 | putpkt (rs->buf); | |
8d64371b TT |
6707 | getpkt (&rs->buf, 0); |
6708 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 6709 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 6710 | rs->buf.data ()); |
74531fed PA |
6711 | } |
6712 | ||
bfedc46a PA |
6713 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6714 | interrupt the remote target. It is undefined which thread of which | |
6715 | process reports the interrupt. */ | |
74531fed | 6716 | |
6b8edb51 PA |
6717 | void |
6718 | remote_target::remote_interrupt_as () | |
74531fed PA |
6719 | { |
6720 | struct remote_state *rs = get_remote_state (); | |
6721 | ||
3a29589a DJ |
6722 | rs->ctrlc_pending_p = 1; |
6723 | ||
74531fed PA |
6724 | /* If the inferior is stopped already, but the core didn't know |
6725 | about it yet, just ignore the request. The cached wait status | |
6726 | will be collected in remote_wait. */ | |
6727 | if (rs->cached_wait_status) | |
6728 | return; | |
6729 | ||
9a7071a8 JB |
6730 | /* Send interrupt_sequence to remote target. */ |
6731 | send_interrupt_sequence (); | |
74531fed PA |
6732 | } |
6733 | ||
de979965 PA |
6734 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6735 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6736 | reports the interrupt. Throws an error if the packet is not |
6737 | supported by the server. */ | |
de979965 | 6738 | |
6b8edb51 PA |
6739 | void |
6740 | remote_target::remote_interrupt_ns () | |
de979965 PA |
6741 | { |
6742 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6743 | char *p = rs->buf.data (); |
6744 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
6745 | |
6746 | xsnprintf (p, endp - p, "vCtrlC"); | |
6747 | ||
6748 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6749 | come in asynchronously by notification. */ | |
6750 | putpkt (rs->buf); | |
8d64371b | 6751 | getpkt (&rs->buf, 0); |
de979965 PA |
6752 | |
6753 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6754 | { | |
6755 | case PACKET_OK: | |
6756 | break; | |
6757 | case PACKET_UNKNOWN: | |
e42de8c7 | 6758 | error (_("No support for interrupting the remote target.")); |
de979965 | 6759 | case PACKET_ERROR: |
8d64371b | 6760 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 6761 | } |
de979965 PA |
6762 | } |
6763 | ||
bfedc46a | 6764 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6765 | |
f6ac5f3d PA |
6766 | void |
6767 | remote_target::stop (ptid_t ptid) | |
c906108c | 6768 | { |
7a292a7a | 6769 | if (remote_debug) |
0f71a2f6 | 6770 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6771 | |
6efcd9a8 | 6772 | if (target_is_non_stop_p ()) |
74531fed | 6773 | remote_stop_ns (ptid); |
c906108c | 6774 | else |
bfedc46a PA |
6775 | { |
6776 | /* We don't currently have a way to transparently pause the | |
6777 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6778 | remote_interrupt_as (); |
bfedc46a PA |
6779 | } |
6780 | } | |
6781 | ||
6782 | /* Implement the to_interrupt function for the remote targets. */ | |
6783 | ||
f6ac5f3d PA |
6784 | void |
6785 | remote_target::interrupt () | |
bfedc46a PA |
6786 | { |
6787 | if (remote_debug) | |
6788 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6789 | ||
e42de8c7 PA |
6790 | if (target_is_non_stop_p ()) |
6791 | remote_interrupt_ns (); | |
bfedc46a | 6792 | else |
e42de8c7 | 6793 | remote_interrupt_as (); |
c906108c SS |
6794 | } |
6795 | ||
93692b58 PA |
6796 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6797 | ||
f6ac5f3d PA |
6798 | void |
6799 | remote_target::pass_ctrlc () | |
93692b58 PA |
6800 | { |
6801 | struct remote_state *rs = get_remote_state (); | |
6802 | ||
6803 | if (remote_debug) | |
6804 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6805 | ||
6806 | /* If we're starting up, we're not fully synced yet. Quit | |
6807 | immediately. */ | |
6808 | if (rs->starting_up) | |
6809 | quit (); | |
6810 | /* If ^C has already been sent once, offer to disconnect. */ | |
6811 | else if (rs->ctrlc_pending_p) | |
6812 | interrupt_query (); | |
6813 | else | |
e671cd59 | 6814 | target_interrupt (); |
93692b58 PA |
6815 | } |
6816 | ||
c906108c SS |
6817 | /* Ask the user what to do when an interrupt is received. */ |
6818 | ||
6b8edb51 PA |
6819 | void |
6820 | remote_target::interrupt_query () | |
c906108c | 6821 | { |
abc56d60 | 6822 | struct remote_state *rs = get_remote_state (); |
c906108c | 6823 | |
abc56d60 | 6824 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6825 | { |
abc56d60 PA |
6826 | if (query (_("The target is not responding to interrupt requests.\n" |
6827 | "Stop debugging it? "))) | |
74531fed | 6828 | { |
5b6d1e4f | 6829 | remote_unpush_target (this); |
abc56d60 | 6830 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6831 | } |
6832 | } | |
abc56d60 PA |
6833 | else |
6834 | { | |
6835 | if (query (_("Interrupted while waiting for the program.\n" | |
6836 | "Give up waiting? "))) | |
6837 | quit (); | |
6838 | } | |
c906108c SS |
6839 | } |
6840 | ||
6426a772 JM |
6841 | /* Enable/disable target terminal ownership. Most targets can use |
6842 | terminal groups to control terminal ownership. Remote targets are | |
6843 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6844 | is required. */ |
6426a772 | 6845 | |
f6ac5f3d PA |
6846 | void |
6847 | remote_target::terminal_inferior () | |
6426a772 | 6848 | { |
6426a772 JM |
6849 | /* NOTE: At this point we could also register our selves as the |
6850 | recipient of all input. Any characters typed could then be | |
23860348 | 6851 | passed on down to the target. */ |
6426a772 JM |
6852 | } |
6853 | ||
f6ac5f3d PA |
6854 | void |
6855 | remote_target::terminal_ours () | |
6426a772 | 6856 | { |
6426a772 JM |
6857 | } |
6858 | ||
176a6961 | 6859 | static void |
05be00a8 | 6860 | remote_console_output (const char *msg) |
c906108c | 6861 | { |
05be00a8 | 6862 | const char *p; |
c906108c | 6863 | |
c5aa993b | 6864 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6865 | { |
6866 | char tb[2]; | |
6867 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6868 | |
c906108c SS |
6869 | tb[0] = c; |
6870 | tb[1] = 0; | |
da5bd37e | 6871 | gdb_stdtarg->puts (tb); |
c906108c | 6872 | } |
da5bd37e | 6873 | gdb_stdtarg->flush (); |
00db5b94 | 6874 | } |
74531fed | 6875 | |
32603266 | 6876 | struct stop_reply : public notif_event |
74531fed | 6877 | { |
32603266 | 6878 | ~stop_reply (); |
74531fed | 6879 | |
722247f1 | 6880 | /* The identifier of the thread about this event */ |
74531fed PA |
6881 | ptid_t ptid; |
6882 | ||
340e3c99 | 6883 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6884 | connection, represented by a remote_state object, is closed, |
6885 | all the associated stop_reply events should be released. */ | |
6886 | struct remote_state *rs; | |
6887 | ||
74531fed PA |
6888 | struct target_waitstatus ws; |
6889 | ||
5cd63fda PA |
6890 | /* The architecture associated with the expedited registers. */ |
6891 | gdbarch *arch; | |
6892 | ||
15148d6a PA |
6893 | /* Expedited registers. This makes remote debugging a bit more |
6894 | efficient for those targets that provide critical registers as | |
6895 | part of their normal status mechanism (as another roundtrip to | |
6896 | fetch them is avoided). */ | |
32603266 | 6897 | std::vector<cached_reg_t> regcache; |
74531fed | 6898 | |
f7e6eed5 PA |
6899 | enum target_stop_reason stop_reason; |
6900 | ||
74531fed PA |
6901 | CORE_ADDR watch_data_address; |
6902 | ||
dc146f7c | 6903 | int core; |
32603266 | 6904 | }; |
c906108c | 6905 | |
221e1a37 PA |
6906 | /* Return the length of the stop reply queue. */ |
6907 | ||
6b8edb51 PA |
6908 | int |
6909 | remote_target::stop_reply_queue_length () | |
221e1a37 | 6910 | { |
6b8edb51 | 6911 | remote_state *rs = get_remote_state (); |
953edf2b | 6912 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
6913 | } |
6914 | ||
cb8c24b6 | 6915 | static void |
6b8edb51 | 6916 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 6917 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6918 | struct notif_event *event) |
6919 | { | |
6b8edb51 | 6920 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
6921 | } |
6922 | ||
6923 | static void | |
6b8edb51 | 6924 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 6925 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6926 | struct notif_event *event) |
6927 | { | |
6928 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6929 | ||
6930 | /* acknowledge */ | |
6b8edb51 | 6931 | putpkt (remote, self->ack_command); |
722247f1 YQ |
6932 | |
6933 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6b8edb51 | 6934 | { |
722247f1 YQ |
6935 | /* We got an unknown stop reply. */ |
6936 | error (_("Unknown stop reply")); | |
6b8edb51 | 6937 | } |
722247f1 | 6938 | |
6b8edb51 | 6939 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
6940 | } |
6941 | ||
6942 | static int | |
6b8edb51 PA |
6943 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
6944 | struct notif_client *self) | |
722247f1 YQ |
6945 | { |
6946 | /* We can't get pending events in remote_notif_process for | |
6947 | notification stop, and we have to do this in remote_wait_ns | |
6948 | instead. If we fetch all queued events from stub, remote stub | |
6949 | may exit and we have no chance to process them back in | |
6950 | remote_wait_ns. */ | |
6b8edb51 PA |
6951 | remote_state *rs = remote->get_remote_state (); |
6952 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
6953 | return 0; |
6954 | } | |
6955 | ||
32603266 | 6956 | stop_reply::~stop_reply () |
722247f1 | 6957 | { |
32603266 TT |
6958 | for (cached_reg_t ® : regcache) |
6959 | xfree (reg.data); | |
722247f1 YQ |
6960 | } |
6961 | ||
32603266 TT |
6962 | static notif_event_up |
6963 | remote_notif_stop_alloc_reply () | |
722247f1 | 6964 | { |
32603266 | 6965 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
6966 | } |
6967 | ||
6968 | /* A client of notification Stop. */ | |
6969 | ||
6970 | struct notif_client notif_client_stop = | |
6971 | { | |
6972 | "Stop", | |
6973 | "vStopped", | |
6974 | remote_notif_stop_parse, | |
6975 | remote_notif_stop_ack, | |
6976 | remote_notif_stop_can_get_pending_events, | |
6977 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6978 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6979 | }; |
6980 | ||
85ad3aaf | 6981 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6982 | the pid of the process that owns the threads we want to check, or |
6983 | -1 if we want to check all threads. */ | |
6984 | ||
6985 | static int | |
6986 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6987 | ptid_t thread_ptid) | |
6988 | { | |
6989 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6990 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6991 | { | |
e99b03dc | 6992 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
6993 | return 1; |
6994 | } | |
6995 | ||
6996 | return 0; | |
6997 | } | |
6998 | ||
85ad3aaf PA |
6999 | /* Return the thread's pending status used to determine whether the |
7000 | thread is a fork parent stopped at a fork event. */ | |
7001 | ||
7002 | static struct target_waitstatus * | |
7003 | thread_pending_fork_status (struct thread_info *thread) | |
7004 | { | |
7005 | if (thread->suspend.waitstatus_pending_p) | |
7006 | return &thread->suspend.waitstatus; | |
7007 | else | |
7008 | return &thread->pending_follow; | |
7009 | } | |
7010 | ||
7011 | /* Determine if THREAD is a pending fork parent thread. */ | |
7012 | ||
7013 | static int | |
7014 | is_pending_fork_parent_thread (struct thread_info *thread) | |
7015 | { | |
7016 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
7017 | int pid = -1; | |
7018 | ||
7019 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
7020 | } | |
7021 | ||
cbb8991c DB |
7022 | /* If CONTEXT contains any fork child threads that have not been |
7023 | reported yet, remove them from the CONTEXT list. If such a | |
7024 | thread exists it is because we are stopped at a fork catchpoint | |
7025 | and have not yet called follow_fork, which will set up the | |
7026 | host-side data structures for the new process. */ | |
7027 | ||
6b8edb51 PA |
7028 | void |
7029 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7030 | { |
cbb8991c DB |
7031 | int pid = -1; |
7032 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
7033 | |
7034 | /* For any threads stopped at a fork event, remove the corresponding | |
7035 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7036 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7037 | { |
85ad3aaf | 7038 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
7039 | |
7040 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 7041 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
7042 | } |
7043 | ||
7044 | /* Check for any pending fork events (not reported or processed yet) | |
7045 | in process PID and remove those fork child threads from the | |
7046 | CONTEXT list as well. */ | |
7047 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7048 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7049 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
7050 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
7051 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
7052 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
7053 | } |
7054 | ||
7055 | /* Check whether any event pending in the vStopped queue would prevent | |
7056 | a global or process wildcard vCont action. Clear | |
7057 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
7058 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
7059 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
7060 | ||
6b8edb51 PA |
7061 | void |
7062 | remote_target::check_pending_events_prevent_wildcard_vcont | |
7063 | (int *may_global_wildcard) | |
85ad3aaf PA |
7064 | { |
7065 | struct notif_client *notif = ¬if_client_stop; | |
7066 | ||
7067 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7068 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7069 | { | |
7070 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7071 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7072 | continue; | |
85ad3aaf | 7073 | |
953edf2b TT |
7074 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7075 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
7076 | *may_global_wildcard = 0; | |
722247f1 | 7077 | |
5b6d1e4f | 7078 | struct inferior *inf = find_inferior_ptid (this, event->ptid); |
722247f1 | 7079 | |
953edf2b TT |
7080 | /* This may be the first time we heard about this process. |
7081 | Regardless, we must not do a global wildcard resume, otherwise | |
7082 | we'd resume this process too. */ | |
7083 | *may_global_wildcard = 0; | |
7084 | if (inf != NULL) | |
7085 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
722247f1 | 7086 | } |
722247f1 YQ |
7087 | } |
7088 | ||
f48ff2a7 | 7089 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7090 | |
6b8edb51 PA |
7091 | void |
7092 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7093 | { |
f48ff2a7 YQ |
7094 | struct stop_reply *reply; |
7095 | struct remote_state *rs = get_remote_state (); | |
7096 | struct remote_notif_state *rns = rs->notif_state; | |
7097 | ||
7098 | /* This function can be notified when an inferior exists. When the | |
7099 | target is not remote, the notification state is NULL. */ | |
7100 | if (rs->remote_desc == NULL) | |
7101 | return; | |
7102 | ||
7103 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7104 | |
74531fed | 7105 | /* Discard the in-flight notification. */ |
e99b03dc | 7106 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7107 | { |
32603266 | 7108 | delete reply; |
f48ff2a7 | 7109 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 7110 | } |
c906108c | 7111 | |
74531fed PA |
7112 | /* Discard the stop replies we have already pulled with |
7113 | vStopped. */ | |
953edf2b TT |
7114 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7115 | rs->stop_reply_queue.end (), | |
7116 | [=] (const stop_reply_up &event) | |
7117 | { | |
7118 | return event->ptid.pid () == inf->pid; | |
7119 | }); | |
7120 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7121 | } |
7122 | ||
7123 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7124 | |
6b8edb51 PA |
7125 | void |
7126 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7127 | { |
6b8edb51 | 7128 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7129 | |
f48ff2a7 YQ |
7130 | /* Discard the stop replies we have already pulled with |
7131 | vStopped. */ | |
953edf2b TT |
7132 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7133 | rs->stop_reply_queue.end (), | |
7134 | [=] (const stop_reply_up &event) | |
7135 | { | |
7136 | return event->rs == rs; | |
7137 | }); | |
7138 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7139 | } |
43ff13b4 | 7140 | |
722247f1 YQ |
7141 | /* Remove the first reply in 'stop_reply_queue' which matches |
7142 | PTID. */ | |
2e9f7625 | 7143 | |
6b8edb51 PA |
7144 | struct stop_reply * |
7145 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7146 | { |
953edf2b | 7147 | remote_state *rs = get_remote_state (); |
722247f1 | 7148 | |
953edf2b TT |
7149 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7150 | rs->stop_reply_queue.end (), | |
7151 | [=] (const stop_reply_up &event) | |
7152 | { | |
7153 | return event->ptid.matches (ptid); | |
7154 | }); | |
7155 | struct stop_reply *result; | |
7156 | if (iter == rs->stop_reply_queue.end ()) | |
7157 | result = nullptr; | |
7158 | else | |
7159 | { | |
7160 | result = iter->release (); | |
7161 | rs->stop_reply_queue.erase (iter); | |
7162 | } | |
722247f1 | 7163 | |
722247f1 YQ |
7164 | if (notif_debug) |
7165 | fprintf_unfiltered (gdb_stdlog, | |
7166 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7167 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7168 | |
953edf2b | 7169 | return result; |
74531fed | 7170 | } |
75c99385 | 7171 | |
74531fed PA |
7172 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7173 | remove it from the queue, and return it. Returns NULL if none is | |
7174 | found. If there are still queued events left to process, tell the | |
7175 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7176 | |
6b8edb51 PA |
7177 | struct stop_reply * |
7178 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7179 | { |
953edf2b | 7180 | remote_state *rs = get_remote_state (); |
722247f1 | 7181 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7182 | |
953edf2b | 7183 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7184 | { |
6b8edb51 PA |
7185 | /* There's still at least an event left. */ |
7186 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7187 | } | |
74531fed | 7188 | |
722247f1 | 7189 | return r; |
74531fed PA |
7190 | } |
7191 | ||
7192 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7193 | know that we now have at least one queued event left to pass to the | |
7194 | core side, tell the event loop to get back to target_wait soon. */ | |
7195 | ||
6b8edb51 PA |
7196 | void |
7197 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7198 | { |
6b8edb51 | 7199 | remote_state *rs = get_remote_state (); |
953edf2b | 7200 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7201 | |
722247f1 YQ |
7202 | if (notif_debug) |
7203 | fprintf_unfiltered (gdb_stdlog, | |
7204 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7205 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7206 | int (rs->stop_reply_queue.size ())); |
74531fed | 7207 | |
6b8edb51 | 7208 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7209 | } |
7210 | ||
7211 | /* Returns true if we have a stop reply for PTID. */ | |
7212 | ||
6b8edb51 PA |
7213 | int |
7214 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7215 | { |
6b8edb51 | 7216 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7217 | for (auto &event : rs->stop_reply_queue) |
7218 | if (ptid == event->ptid | |
7219 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7220 | return 1; | |
7221 | return 0; | |
74531fed PA |
7222 | } |
7223 | ||
26d56a93 SL |
7224 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7225 | starting with P and ending with PEND matches PREFIX. */ | |
7226 | ||
7227 | static int | |
7228 | strprefix (const char *p, const char *pend, const char *prefix) | |
7229 | { | |
7230 | for ( ; p < pend; p++, prefix++) | |
7231 | if (*p != *prefix) | |
7232 | return 0; | |
7233 | return *prefix == '\0'; | |
7234 | } | |
7235 | ||
74531fed PA |
7236 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7237 | result is stored in EVENT, or throws an error. */ | |
7238 | ||
6b8edb51 | 7239 | void |
bb277751 | 7240 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7241 | { |
5cd63fda | 7242 | remote_arch_state *rsa = NULL; |
74531fed | 7243 | ULONGEST addr; |
256642e8 | 7244 | const char *p; |
94585166 | 7245 | int skipregs = 0; |
74531fed PA |
7246 | |
7247 | event->ptid = null_ptid; | |
bcc75809 | 7248 | event->rs = get_remote_state (); |
74531fed PA |
7249 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7250 | event->ws.value.integer = 0; | |
f7e6eed5 | 7251 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7252 | event->regcache.clear (); |
dc146f7c | 7253 | event->core = -1; |
74531fed PA |
7254 | |
7255 | switch (buf[0]) | |
7256 | { | |
7257 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7258 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7259 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7260 | ss = signal number | |
7261 | n... = register number | |
7262 | r... = register contents | |
7263 | */ | |
7264 | ||
7265 | p = &buf[3]; /* after Txx */ | |
7266 | while (*p) | |
7267 | { | |
256642e8 | 7268 | const char *p1; |
cea39f65 | 7269 | int fieldsize; |
43ff13b4 | 7270 | |
1f10ba14 PA |
7271 | p1 = strchr (p, ':'); |
7272 | if (p1 == NULL) | |
7273 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7274 | Packet: '%s'\n"), | |
7275 | p, buf); | |
7276 | if (p == p1) | |
7277 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7278 | Packet: '%s'\n"), | |
7279 | p, buf); | |
3c3bea1c | 7280 | |
1f10ba14 PA |
7281 | /* Some "registers" are actually extended stop information. |
7282 | Note if you're adding a new entry here: GDB 7.9 and | |
7283 | earlier assume that all register "numbers" that start | |
7284 | with an hex digit are real register numbers. Make sure | |
7285 | the server only sends such a packet if it knows the | |
7286 | client understands it. */ | |
c8e38a49 | 7287 | |
26d56a93 | 7288 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7289 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7290 | else if (strprefix (p, p1, "syscall_entry")) |
7291 | { | |
7292 | ULONGEST sysno; | |
7293 | ||
7294 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7295 | p = unpack_varlen_hex (++p1, &sysno); | |
7296 | event->ws.value.syscall_number = (int) sysno; | |
7297 | } | |
7298 | else if (strprefix (p, p1, "syscall_return")) | |
7299 | { | |
7300 | ULONGEST sysno; | |
7301 | ||
7302 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7303 | p = unpack_varlen_hex (++p1, &sysno); | |
7304 | event->ws.value.syscall_number = (int) sysno; | |
7305 | } | |
26d56a93 SL |
7306 | else if (strprefix (p, p1, "watch") |
7307 | || strprefix (p, p1, "rwatch") | |
7308 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7309 | { |
f7e6eed5 | 7310 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7311 | p = unpack_varlen_hex (++p1, &addr); |
7312 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7313 | } |
26d56a93 | 7314 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7315 | { |
7316 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7317 | ||
7318 | /* Make sure the stub doesn't forget to indicate support | |
7319 | with qSupported. */ | |
7320 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7321 | error (_("Unexpected swbreak stop reason")); | |
7322 | ||
7323 | /* The value part is documented as "must be empty", | |
7324 | though we ignore it, in case we ever decide to make | |
7325 | use of it in a backward compatible way. */ | |
8424cc97 | 7326 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7327 | } |
26d56a93 | 7328 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7329 | { |
7330 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7331 | ||
7332 | /* Make sure the stub doesn't forget to indicate support | |
7333 | with qSupported. */ | |
7334 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7335 | error (_("Unexpected hwbreak stop reason")); | |
7336 | ||
7337 | /* See above. */ | |
8424cc97 | 7338 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7339 | } |
26d56a93 | 7340 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7341 | { |
1f10ba14 | 7342 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7343 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7344 | } |
26d56a93 | 7345 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7346 | { |
7347 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7348 | /* p1 will indicate "begin" or "end", but it makes | |
7349 | no difference for now, so ignore it. */ | |
8424cc97 | 7350 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7351 | } |
26d56a93 | 7352 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7353 | { |
7354 | ULONGEST c; | |
a744cf53 | 7355 | |
1f10ba14 PA |
7356 | p = unpack_varlen_hex (++p1, &c); |
7357 | event->core = c; | |
cea39f65 | 7358 | } |
26d56a93 | 7359 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7360 | { |
7361 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7362 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7363 | } | |
26d56a93 | 7364 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7365 | { |
7366 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7367 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7368 | } | |
26d56a93 | 7369 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7370 | { |
7371 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7372 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7373 | } |
6ab24463 | 7374 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7375 | { |
7376 | ULONGEST ignored; | |
94585166 DB |
7377 | int pathlen; |
7378 | ||
7379 | /* Determine the length of the execd pathname. */ | |
7380 | p = unpack_varlen_hex (++p1, &ignored); | |
7381 | pathlen = (p - p1) / 2; | |
7382 | ||
7383 | /* Save the pathname for event reporting and for | |
7384 | the next run command. */ | |
c6321f19 TT |
7385 | gdb::unique_xmalloc_ptr<char[]> pathname |
7386 | ((char *) xmalloc (pathlen + 1)); | |
7387 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
94585166 DB |
7388 | pathname[pathlen] = '\0'; |
7389 | ||
7390 | /* This is freed during event handling. */ | |
c6321f19 | 7391 | event->ws.value.execd_pathname = pathname.release (); |
94585166 DB |
7392 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7393 | ||
7394 | /* Skip the registers included in this packet, since | |
7395 | they may be for an architecture different from the | |
7396 | one used by the original program. */ | |
7397 | skipregs = 1; | |
7398 | } | |
65706a29 PA |
7399 | else if (strprefix (p, p1, "create")) |
7400 | { | |
7401 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7402 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7403 | } |
cea39f65 MS |
7404 | else |
7405 | { | |
1f10ba14 | 7406 | ULONGEST pnum; |
256642e8 | 7407 | const char *p_temp; |
1f10ba14 | 7408 | |
94585166 DB |
7409 | if (skipregs) |
7410 | { | |
8424cc97 | 7411 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7412 | p++; |
7413 | continue; | |
7414 | } | |
7415 | ||
1f10ba14 PA |
7416 | /* Maybe a real ``P'' register number. */ |
7417 | p_temp = unpack_varlen_hex (p, &pnum); | |
7418 | /* If the first invalid character is the colon, we got a | |
7419 | register number. Otherwise, it's an unknown stop | |
7420 | reason. */ | |
7421 | if (p_temp == p1) | |
7422 | { | |
5cd63fda PA |
7423 | /* If we haven't parsed the event's thread yet, find |
7424 | it now, in order to find the architecture of the | |
7425 | reported expedited registers. */ | |
7426 | if (event->ptid == null_ptid) | |
7427 | { | |
24ed6739 AB |
7428 | /* If there is no thread-id information then leave |
7429 | the event->ptid as null_ptid. Later in | |
7430 | process_stop_reply we will pick a suitable | |
7431 | thread. */ | |
5cd63fda PA |
7432 | const char *thr = strstr (p1 + 1, ";thread:"); |
7433 | if (thr != NULL) | |
7434 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7435 | NULL); | |
5cd63fda PA |
7436 | } |
7437 | ||
7438 | if (rsa == NULL) | |
7439 | { | |
5b6d1e4f PA |
7440 | inferior *inf |
7441 | = (event->ptid == null_ptid | |
7442 | ? NULL | |
7443 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7444 | /* If this is the first time we learn anything |
7445 | about this process, skip the registers | |
7446 | included in this packet, since we don't yet | |
7447 | know which architecture to use to parse them. | |
7448 | We'll determine the architecture later when | |
7449 | we process the stop reply and retrieve the | |
7450 | target description, via | |
7451 | remote_notice_new_inferior -> | |
7452 | post_create_inferior. */ | |
7453 | if (inf == NULL) | |
7454 | { | |
7455 | p = strchrnul (p1 + 1, ';'); | |
7456 | p++; | |
7457 | continue; | |
7458 | } | |
7459 | ||
7460 | event->arch = inf->gdbarch; | |
9d6eea31 | 7461 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7462 | } |
7463 | ||
7464 | packet_reg *reg | |
7465 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7466 | cached_reg_t cached_reg; |
43ff13b4 | 7467 | |
1f10ba14 PA |
7468 | if (reg == NULL) |
7469 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7470 | Packet: '%s'\n"), |
1f10ba14 | 7471 | hex_string (pnum), p, buf); |
c8e38a49 | 7472 | |
1f10ba14 | 7473 | cached_reg.num = reg->regnum; |
d1dff226 | 7474 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7475 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7476 | |
1f10ba14 PA |
7477 | p = p1 + 1; |
7478 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7479 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7480 | p += 2 * fieldsize; |
5cd63fda | 7481 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7482 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7483 | |
32603266 | 7484 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7485 | } |
7486 | else | |
7487 | { | |
7488 | /* Not a number. Silently skip unknown optional | |
7489 | info. */ | |
8424cc97 | 7490 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7491 | } |
cea39f65 | 7492 | } |
c8e38a49 | 7493 | |
cea39f65 MS |
7494 | if (*p != ';') |
7495 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7496 | buf, p); | |
7497 | ++p; | |
7498 | } | |
5b5596ff PA |
7499 | |
7500 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7501 | break; | |
7502 | ||
c8e38a49 PA |
7503 | /* fall through */ |
7504 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7505 | { |
7506 | int sig; | |
7507 | ||
7508 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7509 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7510 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7511 | event->ws.value.sig = (enum gdb_signal) sig; | |
7512 | else | |
7513 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7514 | } | |
c8e38a49 | 7515 | break; |
65706a29 PA |
7516 | case 'w': /* Thread exited. */ |
7517 | { | |
65706a29 PA |
7518 | ULONGEST value; |
7519 | ||
7520 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7521 | p = unpack_varlen_hex (&buf[1], &value); | |
7522 | event->ws.value.integer = value; | |
7523 | if (*p != ';') | |
7524 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7525 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7526 | break; |
7527 | } | |
c8e38a49 PA |
7528 | case 'W': /* Target exited. */ |
7529 | case 'X': | |
7530 | { | |
c8e38a49 | 7531 | ULONGEST value; |
82f73884 | 7532 | |
c8e38a49 PA |
7533 | /* GDB used to accept only 2 hex chars here. Stubs should |
7534 | only send more if they detect GDB supports multi-process | |
7535 | support. */ | |
7536 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7537 | |
c8e38a49 PA |
7538 | if (buf[0] == 'W') |
7539 | { | |
7540 | /* The remote process exited. */ | |
74531fed PA |
7541 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7542 | event->ws.value.integer = value; | |
c8e38a49 PA |
7543 | } |
7544 | else | |
7545 | { | |
7546 | /* The remote process exited with a signal. */ | |
74531fed | 7547 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7548 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7549 | event->ws.value.sig = (enum gdb_signal) value; | |
7550 | else | |
7551 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7552 | } |
82f73884 | 7553 | |
e7af6c70 TBA |
7554 | /* If no process is specified, return null_ptid, and let the |
7555 | caller figure out the right process to use. */ | |
7556 | int pid = 0; | |
c8e38a49 PA |
7557 | if (*p == '\0') |
7558 | ; | |
7559 | else if (*p == ';') | |
7560 | { | |
7561 | p++; | |
7562 | ||
0b24eb2d | 7563 | if (*p == '\0') |
82f73884 | 7564 | ; |
61012eef | 7565 | else if (startswith (p, "process:")) |
82f73884 | 7566 | { |
c8e38a49 | 7567 | ULONGEST upid; |
a744cf53 | 7568 | |
c8e38a49 PA |
7569 | p += sizeof ("process:") - 1; |
7570 | unpack_varlen_hex (p, &upid); | |
7571 | pid = upid; | |
82f73884 PA |
7572 | } |
7573 | else | |
7574 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7575 | } |
c8e38a49 PA |
7576 | else |
7577 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7578 | event->ptid = ptid_t (pid); |
74531fed PA |
7579 | } |
7580 | break; | |
f2faf941 PA |
7581 | case 'N': |
7582 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7583 | event->ptid = minus_one_ptid; | |
7584 | break; | |
74531fed | 7585 | } |
74531fed PA |
7586 | } |
7587 | ||
722247f1 YQ |
7588 | /* When the stub wants to tell GDB about a new notification reply, it |
7589 | sends a notification (%Stop, for example). Those can come it at | |
7590 | any time, hence, we have to make sure that any pending | |
7591 | putpkt/getpkt sequence we're making is finished, before querying | |
7592 | the stub for more events with the corresponding ack command | |
7593 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7594 | immediately upon receiving the notification, something like this | |
7595 | could happen: | |
74531fed PA |
7596 | |
7597 | 1.1) --> Hg 1 | |
7598 | 1.2) <-- OK | |
7599 | 1.3) --> g | |
7600 | 1.4) <-- %Stop | |
7601 | 1.5) --> vStopped | |
7602 | 1.6) <-- (registers reply to step #1.3) | |
7603 | ||
7604 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7605 | query. | |
7606 | ||
796cb314 | 7607 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7608 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7609 | doing whatever we were doing: | |
7610 | ||
7611 | 2.1) --> Hg 1 | |
7612 | 2.2) <-- OK | |
7613 | 2.3) --> g | |
7614 | 2.4) <-- %Stop | |
7615 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7616 | 2.5) <-- (registers reply to step #2.3) | |
7617 | ||
85102364 | 7618 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7619 | notices there's an event on the |
7620 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7621 | associated callback --- the function below. At this point, we're | |
7622 | always safe to start a vStopped sequence. : | |
7623 | ||
7624 | 2.6) --> vStopped | |
7625 | 2.7) <-- T05 thread:2 | |
7626 | 2.8) --> vStopped | |
7627 | 2.9) --> OK | |
7628 | */ | |
7629 | ||
722247f1 | 7630 | void |
6b8edb51 | 7631 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7632 | { |
7633 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7634 | |
f48ff2a7 | 7635 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7636 | { |
722247f1 YQ |
7637 | if (notif_debug) |
7638 | fprintf_unfiltered (gdb_stdlog, | |
7639 | "notif: process: '%s' ack pending event\n", | |
7640 | nc->name); | |
74531fed | 7641 | |
722247f1 | 7642 | /* acknowledge */ |
8d64371b TT |
7643 | nc->ack (this, nc, rs->buf.data (), |
7644 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7645 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7646 | |
7647 | while (1) | |
7648 | { | |
8d64371b TT |
7649 | getpkt (&rs->buf, 0); |
7650 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7651 | break; |
7652 | else | |
8d64371b | 7653 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7654 | } |
7655 | } | |
722247f1 YQ |
7656 | else |
7657 | { | |
7658 | if (notif_debug) | |
7659 | fprintf_unfiltered (gdb_stdlog, | |
7660 | "notif: process: '%s' no pending reply\n", | |
7661 | nc->name); | |
7662 | } | |
74531fed PA |
7663 | } |
7664 | ||
6b8edb51 PA |
7665 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7666 | avoid having to export the whole remote_target class. */ | |
7667 | ||
7668 | void | |
7669 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7670 | { | |
7671 | remote->remote_notif_get_pending_events (nc); | |
7672 | } | |
7673 | ||
74531fed PA |
7674 | /* Called when it is decided that STOP_REPLY holds the info of the |
7675 | event that is to be returned to the core. This function always | |
7676 | destroys STOP_REPLY. */ | |
7677 | ||
6b8edb51 PA |
7678 | ptid_t |
7679 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
7680 | struct target_waitstatus *status) | |
74531fed PA |
7681 | { |
7682 | ptid_t ptid; | |
7683 | ||
7684 | *status = stop_reply->ws; | |
7685 | ptid = stop_reply->ptid; | |
7686 | ||
24ed6739 AB |
7687 | /* If no thread/process was reported by the stub then use the first |
7688 | non-exited thread in the current target. */ | |
d7e15655 | 7689 | if (ptid == null_ptid) |
24ed6739 | 7690 | { |
cada5fc9 AB |
7691 | /* Some stop events apply to all threads in an inferior, while others |
7692 | only apply to a single thread. */ | |
7693 | bool is_stop_for_all_threads | |
7694 | = (status->kind == TARGET_WAITKIND_EXITED | |
7695 | || status->kind == TARGET_WAITKIND_SIGNALLED); | |
7696 | ||
24ed6739 AB |
7697 | for (thread_info *thr : all_non_exited_threads (this)) |
7698 | { | |
cada5fc9 AB |
7699 | if (ptid != null_ptid |
7700 | && (!is_stop_for_all_threads | |
7701 | || ptid.pid () != thr->ptid.pid ())) | |
24ed6739 AB |
7702 | { |
7703 | static bool warned = false; | |
7704 | ||
7705 | if (!warned) | |
7706 | { | |
7707 | /* If you are seeing this warning then the remote target | |
cada5fc9 AB |
7708 | has stopped without specifying a thread-id, but the |
7709 | target does have multiple threads (or inferiors), and | |
7710 | so GDB is having to guess which thread stopped. | |
7711 | ||
7712 | Examples of what might cause this are the target | |
7713 | sending and 'S' stop packet, or a 'T' stop packet and | |
7714 | not including a thread-id. | |
7715 | ||
7716 | Additionally, the target might send a 'W' or 'X | |
7717 | packet without including a process-id, when the target | |
7718 | has multiple running inferiors. */ | |
7719 | if (is_stop_for_all_threads) | |
7720 | warning (_("multi-inferior target stopped without " | |
7721 | "sending a process-id, using first " | |
7722 | "non-exited inferior")); | |
7723 | else | |
7724 | warning (_("multi-threaded target stopped without " | |
7725 | "sending a thread-id, using first " | |
7726 | "non-exited thread")); | |
24ed6739 AB |
7727 | warned = true; |
7728 | } | |
7729 | break; | |
7730 | } | |
cada5fc9 AB |
7731 | |
7732 | /* If this is a stop for all threads then don't use a particular | |
7733 | threads ptid, instead create a new ptid where only the pid | |
7734 | field is set. */ | |
7735 | if (is_stop_for_all_threads) | |
7736 | ptid = ptid_t (thr->ptid.pid ()); | |
7737 | else | |
7738 | ptid = thr->ptid; | |
24ed6739 AB |
7739 | } |
7740 | gdb_assert (ptid != null_ptid); | |
7741 | } | |
74531fed | 7742 | |
5f3563ea | 7743 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7744 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7745 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7746 | { |
5f3563ea | 7747 | /* Expedited registers. */ |
32603266 | 7748 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 7749 | { |
217f1f79 | 7750 | struct regcache *regcache |
5b6d1e4f | 7751 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 7752 | |
32603266 TT |
7753 | for (cached_reg_t ® : stop_reply->regcache) |
7754 | { | |
7755 | regcache->raw_supply (reg.num, reg.data); | |
7756 | xfree (reg.data); | |
7757 | } | |
d1dff226 | 7758 | |
32603266 | 7759 | stop_reply->regcache.clear (); |
5f3563ea | 7760 | } |
74531fed | 7761 | |
1941c569 | 7762 | remote_notice_new_inferior (ptid, 0); |
5b6d1e4f | 7763 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
7764 | remote_thr->core = stop_reply->core; |
7765 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7766 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7767 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7768 | } |
7769 | ||
32603266 | 7770 | delete stop_reply; |
74531fed PA |
7771 | return ptid; |
7772 | } | |
7773 | ||
7774 | /* The non-stop mode version of target_wait. */ | |
7775 | ||
6b8edb51 | 7776 | ptid_t |
b60cea74 TT |
7777 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
7778 | target_wait_flags options) | |
74531fed PA |
7779 | { |
7780 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7781 | struct stop_reply *stop_reply; |
7782 | int ret; | |
fee9eda9 | 7783 | int is_notif = 0; |
74531fed PA |
7784 | |
7785 | /* If in non-stop mode, get out of getpkt even if a | |
7786 | notification is received. */ | |
7787 | ||
8d64371b | 7788 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
7789 | while (1) |
7790 | { | |
fee9eda9 | 7791 | if (ret != -1 && !is_notif) |
74531fed PA |
7792 | switch (rs->buf[0]) |
7793 | { | |
7794 | case 'E': /* Error of some sort. */ | |
7795 | /* We're out of sync with the target now. Did it continue | |
7796 | or not? We can't tell which thread it was in non-stop, | |
7797 | so just ignore this. */ | |
8d64371b | 7798 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
7799 | break; |
7800 | case 'O': /* Console output. */ | |
8d64371b | 7801 | remote_console_output (&rs->buf[1]); |
74531fed PA |
7802 | break; |
7803 | default: | |
8d64371b | 7804 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
7805 | break; |
7806 | } | |
7807 | ||
7808 | /* Acknowledge a pending stop reply that may have arrived in the | |
7809 | mean time. */ | |
f48ff2a7 | 7810 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7811 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7812 | |
7813 | /* If indeed we noticed a stop reply, we're done. */ | |
7814 | stop_reply = queued_stop_reply (ptid); | |
7815 | if (stop_reply != NULL) | |
7816 | return process_stop_reply (stop_reply, status); | |
7817 | ||
47608cb1 | 7818 | /* Still no event. If we're just polling for an event, then |
74531fed | 7819 | return to the event loop. */ |
47608cb1 | 7820 | if (options & TARGET_WNOHANG) |
74531fed PA |
7821 | { |
7822 | status->kind = TARGET_WAITKIND_IGNORE; | |
7823 | return minus_one_ptid; | |
7824 | } | |
7825 | ||
47608cb1 | 7826 | /* Otherwise do a blocking wait. */ |
8d64371b | 7827 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
7828 | } |
7829 | } | |
7830 | ||
31ba933e PA |
7831 | /* Return the first resumed thread. */ |
7832 | ||
7833 | static ptid_t | |
5b6d1e4f | 7834 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 7835 | { |
5b6d1e4f | 7836 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
31ba933e PA |
7837 | if (tp->resumed) |
7838 | return tp->ptid; | |
7839 | return null_ptid; | |
7840 | } | |
7841 | ||
74531fed PA |
7842 | /* Wait until the remote machine stops, then return, storing status in |
7843 | STATUS just as `wait' would. */ | |
7844 | ||
6b8edb51 | 7845 | ptid_t |
b60cea74 TT |
7846 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
7847 | target_wait_flags options) | |
74531fed PA |
7848 | { |
7849 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7850 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7851 | char *buf; |
74531fed PA |
7852 | struct stop_reply *stop_reply; |
7853 | ||
47608cb1 PA |
7854 | again: |
7855 | ||
74531fed PA |
7856 | status->kind = TARGET_WAITKIND_IGNORE; |
7857 | status->value.integer = 0; | |
7858 | ||
7859 | stop_reply = queued_stop_reply (ptid); | |
7860 | if (stop_reply != NULL) | |
7861 | return process_stop_reply (stop_reply, status); | |
7862 | ||
7863 | if (rs->cached_wait_status) | |
7864 | /* Use the cached wait status, but only once. */ | |
7865 | rs->cached_wait_status = 0; | |
7866 | else | |
7867 | { | |
7868 | int ret; | |
722247f1 | 7869 | int is_notif; |
567420d1 | 7870 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 7871 | && rs->wait_forever_enabled_p); |
567420d1 PA |
7872 | |
7873 | if (!rs->waiting_for_stop_reply) | |
7874 | { | |
7875 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7876 | return minus_one_ptid; | |
7877 | } | |
74531fed | 7878 | |
74531fed PA |
7879 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7880 | _never_ wait for ever -> test on target_is_async_p(). | |
7881 | However, before we do that we need to ensure that the caller | |
7882 | knows how to take the target into/out of async mode. */ | |
8d64371b | 7883 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
7884 | |
7885 | /* GDB gets a notification. Return to core as this event is | |
7886 | not interesting. */ | |
7887 | if (ret != -1 && is_notif) | |
7888 | return minus_one_ptid; | |
567420d1 PA |
7889 | |
7890 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7891 | return minus_one_ptid; | |
74531fed PA |
7892 | } |
7893 | ||
8d64371b | 7894 | buf = rs->buf.data (); |
74531fed | 7895 | |
3a29589a DJ |
7896 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7897 | an 'F' or 'O' packet. */ | |
7898 | if (buf[0] != 'F' && buf[0] != 'O') | |
7899 | rs->ctrlc_pending_p = 0; | |
7900 | ||
74531fed PA |
7901 | switch (buf[0]) |
7902 | { | |
7903 | case 'E': /* Error of some sort. */ | |
7904 | /* We're out of sync with the target now. Did it continue or | |
7905 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7906 | rs->waiting_for_stop_reply = 0; |
7907 | ||
74531fed PA |
7908 | warning (_("Remote failure reply: %s"), buf); |
7909 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7910 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7911 | break; |
7912 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7913 | /* GDB may access the inferior memory while handling the File-I/O |
7914 | request, but we don't want GDB accessing memory while waiting | |
7915 | for a stop reply. See the comments in putpkt_binary. Set | |
7916 | waiting_for_stop_reply to 0 temporarily. */ | |
7917 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 7918 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 7919 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
7920 | /* GDB handled the File-I/O request, and the target is running |
7921 | again. Keep waiting for events. */ | |
7922 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7923 | break; |
f2faf941 | 7924 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7925 | { |
29090fb6 LM |
7926 | /* There is a stop reply to handle. */ |
7927 | rs->waiting_for_stop_reply = 0; | |
7928 | ||
7929 | stop_reply | |
6b8edb51 PA |
7930 | = (struct stop_reply *) remote_notif_parse (this, |
7931 | ¬if_client_stop, | |
8d64371b | 7932 | rs->buf.data ()); |
74531fed | 7933 | |
74531fed | 7934 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7935 | break; |
7936 | } | |
7937 | case 'O': /* Console output. */ | |
7938 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7939 | break; |
7940 | case '\0': | |
b73be471 | 7941 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7942 | { |
7943 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7944 | remote system doesn't support it. */ | |
223ffa71 | 7945 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7946 | printf_filtered |
7947 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7948 | gdb_signal_to_name (rs->last_sent_signal)); |
7949 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7950 | target_terminal::inferior (); |
c8e38a49 | 7951 | |
f5c4fcd9 TT |
7952 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7953 | putpkt (buf); | |
c8e38a49 | 7954 | break; |
43ff13b4 | 7955 | } |
86a73007 | 7956 | /* fallthrough */ |
c8e38a49 PA |
7957 | default: |
7958 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7959 | break; |
43ff13b4 | 7960 | } |
c8e38a49 | 7961 | |
f2faf941 PA |
7962 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7963 | return minus_one_ptid; | |
7964 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7965 | { |
7966 | /* Nothing interesting happened. If we're doing a non-blocking | |
7967 | poll, we're done. Otherwise, go back to waiting. */ | |
7968 | if (options & TARGET_WNOHANG) | |
7969 | return minus_one_ptid; | |
7970 | else | |
7971 | goto again; | |
7972 | } | |
74531fed PA |
7973 | else if (status->kind != TARGET_WAITKIND_EXITED |
7974 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 7975 | { |
d7e15655 | 7976 | if (event_ptid != null_ptid) |
47f8a51d | 7977 | record_currthread (rs, event_ptid); |
82f73884 | 7978 | else |
5b6d1e4f | 7979 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 7980 | } |
74531fed | 7981 | else |
e7af6c70 TBA |
7982 | { |
7983 | /* A process exit. Invalidate our notion of current thread. */ | |
7984 | record_currthread (rs, minus_one_ptid); | |
7985 | /* It's possible that the packet did not include a pid. */ | |
7986 | if (event_ptid == null_ptid) | |
5b6d1e4f | 7987 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
7988 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
7989 | if (event_ptid == null_ptid) | |
7990 | event_ptid = magic_null_ptid; | |
7991 | } | |
79d7f229 | 7992 | |
82f73884 | 7993 | return event_ptid; |
43ff13b4 JM |
7994 | } |
7995 | ||
74531fed PA |
7996 | /* Wait until the remote machine stops, then return, storing status in |
7997 | STATUS just as `wait' would. */ | |
7998 | ||
f6ac5f3d | 7999 | ptid_t |
b60cea74 TT |
8000 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8001 | target_wait_flags options) | |
c8e38a49 PA |
8002 | { |
8003 | ptid_t event_ptid; | |
8004 | ||
6efcd9a8 | 8005 | if (target_is_non_stop_p ()) |
6b8edb51 | 8006 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8007 | else |
6b8edb51 | 8008 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8009 | |
d9d41e78 | 8010 | if (target_is_async_p ()) |
c8e38a49 | 8011 | { |
6b8edb51 PA |
8012 | remote_state *rs = get_remote_state (); |
8013 | ||
74531fed PA |
8014 | /* If there are are events left in the queue tell the event loop |
8015 | to return here. */ | |
953edf2b | 8016 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 8017 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8018 | } |
c8e38a49 PA |
8019 | |
8020 | return event_ptid; | |
8021 | } | |
8022 | ||
74ca34ce | 8023 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8024 | |
6b8edb51 PA |
8025 | int |
8026 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8027 | packet_reg *reg) | |
b96ec7ac | 8028 | { |
ac7936df | 8029 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8030 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8031 | char *buf, *p; |
9890e433 | 8032 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8033 | int i; |
8034 | ||
4082afcc | 8035 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8036 | return 0; |
8037 | ||
8038 | if (reg->pnum == -1) | |
8039 | return 0; | |
8040 | ||
8d64371b | 8041 | p = rs->buf.data (); |
fcad0fa4 | 8042 | *p++ = 'p'; |
74ca34ce | 8043 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8044 | *p++ = '\0'; |
1f4437a4 | 8045 | putpkt (rs->buf); |
8d64371b | 8046 | getpkt (&rs->buf, 0); |
3f9a994c | 8047 | |
8d64371b | 8048 | buf = rs->buf.data (); |
2e9f7625 | 8049 | |
8d64371b | 8050 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
8051 | { |
8052 | case PACKET_OK: | |
8053 | break; | |
8054 | case PACKET_UNKNOWN: | |
8055 | return 0; | |
8056 | case PACKET_ERROR: | |
27a9c0bf | 8057 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8058 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8059 | reg->regnum), |
8060 | buf); | |
74ca34ce | 8061 | } |
3f9a994c JB |
8062 | |
8063 | /* If this register is unfetchable, tell the regcache. */ | |
8064 | if (buf[0] == 'x') | |
8480adf2 | 8065 | { |
73e1c03f | 8066 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8067 | return 1; |
b96ec7ac | 8068 | } |
b96ec7ac | 8069 | |
3f9a994c JB |
8070 | /* Otherwise, parse and supply the value. */ |
8071 | p = buf; | |
8072 | i = 0; | |
8073 | while (p[0] != 0) | |
8074 | { | |
8075 | if (p[1] == 0) | |
74ca34ce | 8076 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8077 | |
8078 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8079 | p += 2; | |
8080 | } | |
73e1c03f | 8081 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8082 | return 1; |
b96ec7ac AC |
8083 | } |
8084 | ||
74ca34ce DJ |
8085 | /* Fetch the registers included in the target's 'g' packet. */ |
8086 | ||
6b8edb51 PA |
8087 | int |
8088 | remote_target::send_g_packet () | |
c906108c | 8089 | { |
d01949b6 | 8090 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8091 | int buf_len; |
c906108c | 8092 | |
8d64371b | 8093 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8094 | putpkt (rs->buf); |
8d64371b | 8095 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8096 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8097 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8098 | rs->buf.data ()); |
c906108c | 8099 | |
29709017 DJ |
8100 | /* We can get out of synch in various cases. If the first character |
8101 | in the buffer is not a hex character, assume that has happened | |
8102 | and try to fetch another packet to read. */ | |
8103 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8104 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8105 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8106 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8107 | { | |
8108 | if (remote_debug) | |
8109 | fprintf_unfiltered (gdb_stdlog, | |
8110 | "Bad register packet; fetching a new packet\n"); | |
8d64371b | 8111 | getpkt (&rs->buf, 0); |
29709017 DJ |
8112 | } |
8113 | ||
8d64371b | 8114 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8115 | |
8116 | /* Sanity check the received packet. */ | |
8117 | if (buf_len % 2 != 0) | |
8d64371b | 8118 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8119 | |
8120 | return buf_len / 2; | |
8121 | } | |
8122 | ||
6b8edb51 PA |
8123 | void |
8124 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8125 | { |
ac7936df | 8126 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8127 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8128 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8129 | int i, buf_len; |
8130 | char *p; | |
8131 | char *regs; | |
8132 | ||
8d64371b | 8133 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8134 | |
8135 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8136 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8137 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8138 | "bytes): %s"), |
8139 | rsa->sizeof_g_packet, buf_len / 2, | |
8140 | rs->buf.data ()); | |
74ca34ce DJ |
8141 | |
8142 | /* Save the size of the packet sent to us by the target. It is used | |
8143 | as a heuristic when determining the max size of packets that the | |
8144 | target can safely receive. */ | |
8145 | if (rsa->actual_register_packet_size == 0) | |
8146 | rsa->actual_register_packet_size = buf_len; | |
8147 | ||
8148 | /* If this is smaller than we guessed the 'g' packet would be, | |
8149 | update our records. A 'g' reply that doesn't include a register's | |
8150 | value implies either that the register is not available, or that | |
8151 | the 'p' packet must be used. */ | |
8152 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8153 | { |
9dc193c3 | 8154 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8155 | |
4a22f64d | 8156 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8157 | { |
9dc193c3 LF |
8158 | long offset = rsa->regs[i].offset; |
8159 | long reg_size = register_size (gdbarch, i); | |
8160 | ||
74ca34ce DJ |
8161 | if (rsa->regs[i].pnum == -1) |
8162 | continue; | |
8163 | ||
9dc193c3 | 8164 | if (offset >= sizeof_g_packet) |
74ca34ce | 8165 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8166 | else if (offset + reg_size > sizeof_g_packet) |
8167 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8168 | else |
74ca34ce | 8169 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8170 | } |
9dc193c3 LF |
8171 | |
8172 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8173 | for a 'g' packet. It's important not to adjust |
8174 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8175 | this "if" won't be run the next time the method is called | |
8176 | with a packet of the same size and one of the internal errors | |
8177 | below will trigger instead. */ | |
9dc193c3 | 8178 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8179 | } |
b323314b | 8180 | |
224c3ddb | 8181 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8182 | |
8183 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8184 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8185 | |
c906108c SS |
8186 | /* Reply describes registers byte by byte, each byte encoded as two |
8187 | hex characters. Suck them all up, then supply them to the | |
8188 | register cacheing/storage mechanism. */ | |
8189 | ||
8d64371b | 8190 | p = rs->buf.data (); |
ea9c271d | 8191 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8192 | { |
74ca34ce DJ |
8193 | if (p[0] == 0 || p[1] == 0) |
8194 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8195 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8196 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8197 | |
c906108c | 8198 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8199 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8200 | else |
8201 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8202 | p += 2; | |
8203 | } | |
8204 | ||
a744cf53 MS |
8205 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8206 | { | |
8207 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8208 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8209 | |
8210 | if (r->in_g_packet) | |
8211 | { | |
8d64371b | 8212 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8213 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8214 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8215 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8216 | else if (rs->buf[r->offset * 2] == 'x') |
8217 | { | |
8d64371b | 8218 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8219 | /* The register isn't available, mark it as such (at |
8220 | the same time setting the value to zero). */ | |
73e1c03f | 8221 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8222 | } |
8223 | else | |
73e1c03f | 8224 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8225 | } |
8226 | } | |
c906108c SS |
8227 | } |
8228 | ||
6b8edb51 PA |
8229 | void |
8230 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8231 | { |
8232 | send_g_packet (); | |
56be3814 | 8233 | process_g_packet (regcache); |
29709017 DJ |
8234 | } |
8235 | ||
e6e4e701 PA |
8236 | /* Make the remote selected traceframe match GDB's selected |
8237 | traceframe. */ | |
8238 | ||
6b8edb51 PA |
8239 | void |
8240 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8241 | { |
8242 | int newnum; | |
262e1174 | 8243 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8244 | |
262e1174 | 8245 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8246 | return; |
8247 | ||
8248 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8249 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8250 | |
8251 | newnum = target_trace_find (tfind_number, | |
8252 | get_traceframe_number (), 0, 0, NULL); | |
8253 | ||
8254 | /* Should not happen. If it does, all bets are off. */ | |
8255 | if (newnum != get_traceframe_number ()) | |
8256 | warning (_("could not set remote traceframe")); | |
8257 | } | |
8258 | ||
f6ac5f3d PA |
8259 | void |
8260 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8261 | { |
ac7936df | 8262 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8263 | struct remote_state *rs = get_remote_state (); |
8264 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8265 | int i; |
8266 | ||
e6e4e701 | 8267 | set_remote_traceframe (); |
222312d3 | 8268 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8269 | |
8270 | if (regnum >= 0) | |
8271 | { | |
5cd63fda | 8272 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8273 | |
74ca34ce DJ |
8274 | gdb_assert (reg != NULL); |
8275 | ||
8276 | /* If this register might be in the 'g' packet, try that first - | |
8277 | we are likely to read more than one register. If this is the | |
8278 | first 'g' packet, we might be overly optimistic about its | |
8279 | contents, so fall back to 'p'. */ | |
8280 | if (reg->in_g_packet) | |
8281 | { | |
56be3814 | 8282 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8283 | if (reg->in_g_packet) |
8284 | return; | |
8285 | } | |
8286 | ||
56be3814 | 8287 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8288 | return; |
8289 | ||
8290 | /* This register is not available. */ | |
73e1c03f | 8291 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8292 | |
8293 | return; | |
8294 | } | |
8295 | ||
56be3814 | 8296 | fetch_registers_using_g (regcache); |
74ca34ce | 8297 | |
5cd63fda | 8298 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8299 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8300 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8301 | { |
8302 | /* This register is not available. */ | |
73e1c03f | 8303 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8304 | } |
8305 | } | |
8306 | ||
c906108c SS |
8307 | /* Prepare to store registers. Since we may send them all (using a |
8308 | 'G' request), we have to read out the ones we don't want to change | |
8309 | first. */ | |
8310 | ||
f6ac5f3d PA |
8311 | void |
8312 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8313 | { |
9d6eea31 PA |
8314 | struct remote_state *rs = get_remote_state (); |
8315 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8316 | int i; |
cf0e1e0d | 8317 | |
c906108c | 8318 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8319 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8320 | { |
8321 | case PACKET_DISABLE: | |
8322 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8323 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8324 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8325 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8326 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8327 | break; |
8328 | case PACKET_ENABLE: | |
8329 | break; | |
8330 | } | |
8331 | } | |
8332 | ||
ad10f812 | 8333 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8334 | packet was not recognized. */ |
5a2468f5 | 8335 | |
6b8edb51 PA |
8336 | int |
8337 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8338 | packet_reg *reg) | |
5a2468f5 | 8339 | { |
ac7936df | 8340 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8341 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8342 | /* Try storing a single register. */ |
8d64371b | 8343 | char *buf = rs->buf.data (); |
9890e433 | 8344 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8345 | char *p; |
5a2468f5 | 8346 | |
4082afcc | 8347 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8348 | return 0; |
8349 | ||
8350 | if (reg->pnum == -1) | |
8351 | return 0; | |
8352 | ||
ea9c271d | 8353 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8354 | p = buf + strlen (buf); |
34a79281 | 8355 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8356 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8357 | putpkt (rs->buf); |
8d64371b | 8358 | getpkt (&rs->buf, 0); |
5a2468f5 | 8359 | |
74ca34ce DJ |
8360 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8361 | { | |
8362 | case PACKET_OK: | |
8363 | return 1; | |
8364 | case PACKET_ERROR: | |
27a9c0bf | 8365 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8366 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8367 | case PACKET_UNKNOWN: |
8368 | return 0; | |
8369 | default: | |
8370 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8371 | } | |
c906108c SS |
8372 | } |
8373 | ||
23860348 MS |
8374 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8375 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8376 | |
6b8edb51 PA |
8377 | void |
8378 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8379 | { |
d01949b6 | 8380 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8381 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8382 | gdb_byte *regs; |
c906108c SS |
8383 | char *p; |
8384 | ||
193cb69f AC |
8385 | /* Extract all the registers in the regcache copying them into a |
8386 | local buffer. */ | |
8387 | { | |
b323314b | 8388 | int i; |
a744cf53 | 8389 | |
224c3ddb | 8390 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8391 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8392 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8393 | { |
ea9c271d | 8394 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8395 | |
b323314b | 8396 | if (r->in_g_packet) |
34a79281 | 8397 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8398 | } |
8399 | } | |
c906108c SS |
8400 | |
8401 | /* Command describes registers byte by byte, | |
8402 | each byte encoded as two hex characters. */ | |
8d64371b | 8403 | p = rs->buf.data (); |
193cb69f | 8404 | *p++ = 'G'; |
74ca34ce | 8405 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8406 | putpkt (rs->buf); |
8d64371b | 8407 | getpkt (&rs->buf, 0); |
1f4437a4 | 8408 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8409 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8410 | rs->buf.data ()); |
c906108c | 8411 | } |
74ca34ce DJ |
8412 | |
8413 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8414 | of the register cache buffer. FIXME: ignores errors. */ | |
8415 | ||
f6ac5f3d PA |
8416 | void |
8417 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8418 | { |
5cd63fda | 8419 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8420 | struct remote_state *rs = get_remote_state (); |
8421 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8422 | int i; |
8423 | ||
e6e4e701 | 8424 | set_remote_traceframe (); |
222312d3 | 8425 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8426 | |
8427 | if (regnum >= 0) | |
8428 | { | |
5cd63fda | 8429 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8430 | |
74ca34ce DJ |
8431 | gdb_assert (reg != NULL); |
8432 | ||
8433 | /* Always prefer to store registers using the 'P' packet if | |
8434 | possible; we often change only a small number of registers. | |
8435 | Sometimes we change a larger number; we'd need help from a | |
8436 | higher layer to know to use 'G'. */ | |
56be3814 | 8437 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8438 | return; |
8439 | ||
8440 | /* For now, don't complain if we have no way to write the | |
8441 | register. GDB loses track of unavailable registers too | |
8442 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8443 | any way to read the register, either... */ |
74ca34ce DJ |
8444 | if (!reg->in_g_packet) |
8445 | return; | |
8446 | ||
56be3814 | 8447 | store_registers_using_G (regcache); |
74ca34ce DJ |
8448 | return; |
8449 | } | |
8450 | ||
56be3814 | 8451 | store_registers_using_G (regcache); |
74ca34ce | 8452 | |
5cd63fda | 8453 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8454 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8455 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8456 | /* See above for why we do not issue an error here. */ |
8457 | continue; | |
8458 | } | |
c906108c SS |
8459 | \f |
8460 | ||
8461 | /* Return the number of hex digits in num. */ | |
8462 | ||
8463 | static int | |
fba45db2 | 8464 | hexnumlen (ULONGEST num) |
c906108c SS |
8465 | { |
8466 | int i; | |
8467 | ||
8468 | for (i = 0; num != 0; i++) | |
8469 | num >>= 4; | |
8470 | ||
325fac50 | 8471 | return std::max (i, 1); |
c906108c SS |
8472 | } |
8473 | ||
2df3850c | 8474 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8475 | |
8476 | static int | |
fba45db2 | 8477 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8478 | { |
c906108c | 8479 | int len = hexnumlen (num); |
a744cf53 | 8480 | |
2df3850c JM |
8481 | return hexnumnstr (buf, num, len); |
8482 | } | |
8483 | ||
c906108c | 8484 | |
2df3850c | 8485 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8486 | |
2df3850c | 8487 | static int |
fba45db2 | 8488 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8489 | { |
8490 | int i; | |
8491 | ||
8492 | buf[width] = '\0'; | |
8493 | ||
8494 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8495 | { |
c5aa993b | 8496 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8497 | num >>= 4; |
8498 | } | |
8499 | ||
2df3850c | 8500 | return width; |
c906108c SS |
8501 | } |
8502 | ||
23860348 | 8503 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8504 | |
8505 | static CORE_ADDR | |
fba45db2 | 8506 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8507 | { |
883b9c6c | 8508 | unsigned int address_size = remote_address_size; |
a744cf53 | 8509 | |
911c95a5 UW |
8510 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8511 | if (!address_size) | |
f5656ead | 8512 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8513 | |
8514 | if (address_size > 0 | |
8515 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8516 | { |
8517 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 8518 | in a ULONGEST variable. */ |
c906108c | 8519 | ULONGEST mask = 1; |
a744cf53 | 8520 | |
911c95a5 | 8521 | mask = (mask << address_size) - 1; |
c906108c SS |
8522 | addr &= mask; |
8523 | } | |
8524 | return addr; | |
8525 | } | |
8526 | ||
8527 | /* Determine whether the remote target supports binary downloading. | |
8528 | This is accomplished by sending a no-op memory write of zero length | |
8529 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8530 | the whole packet, since many stubs strip the eighth bit and |
8531 | subsequently compute a wrong checksum, which causes real havoc with | |
8532 | remote_write_bytes. | |
7a292a7a | 8533 | |
96baa820 | 8534 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8535 | clean. In cases like this, the user should clear "remote |
23860348 | 8536 | X-packet". */ |
96baa820 | 8537 | |
6b8edb51 PA |
8538 | void |
8539 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8540 | { |
d01949b6 | 8541 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8542 | |
4082afcc | 8543 | switch (packet_support (PACKET_X)) |
c906108c | 8544 | { |
96baa820 JM |
8545 | case PACKET_DISABLE: |
8546 | break; | |
8547 | case PACKET_ENABLE: | |
8548 | break; | |
8549 | case PACKET_SUPPORT_UNKNOWN: | |
8550 | { | |
96baa820 | 8551 | char *p; |
802188a7 | 8552 | |
8d64371b | 8553 | p = rs->buf.data (); |
96baa820 JM |
8554 | *p++ = 'X'; |
8555 | p += hexnumstr (p, (ULONGEST) addr); | |
8556 | *p++ = ','; | |
8557 | p += hexnumstr (p, (ULONGEST) 0); | |
8558 | *p++ = ':'; | |
8559 | *p = '\0'; | |
802188a7 | 8560 | |
8d64371b TT |
8561 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8562 | getpkt (&rs->buf, 0); | |
c906108c | 8563 | |
2e9f7625 | 8564 | if (rs->buf[0] == '\0') |
96baa820 JM |
8565 | { |
8566 | if (remote_debug) | |
8567 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8568 | "binary downloading NOT " |
8569 | "supported by target\n"); | |
444abaca | 8570 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8571 | } |
8572 | else | |
8573 | { | |
8574 | if (remote_debug) | |
8575 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8576 | "binary downloading supported by target\n"); |
444abaca | 8577 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8578 | } |
8579 | break; | |
8580 | } | |
c906108c SS |
8581 | } |
8582 | } | |
8583 | ||
124e13d9 SM |
8584 | /* Helper function to resize the payload in order to try to get a good |
8585 | alignment. We try to write an amount of data such that the next write will | |
8586 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8587 | ||
8588 | static int | |
8589 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8590 | { | |
8591 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8592 | } | |
8593 | ||
c906108c SS |
8594 | /* Write memory data directly to the remote machine. |
8595 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8596 | HEADER is the starting part of the packet. |
c906108c SS |
8597 | MEMADDR is the address in the remote memory space. |
8598 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8599 | LEN_UNITS is the number of addressable units to write. |
8600 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8601 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8602 | should send data as binary ('X'), or hex-encoded ('M'). | |
8603 | ||
8604 | The function creates packet of the form | |
8605 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8606 | ||
124e13d9 | 8607 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8608 | |
8609 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8610 | are omitted. | |
8611 | ||
9b409511 | 8612 | Return the transferred status, error or OK (an |
124e13d9 SM |
8613 | 'enum target_xfer_status' value). Save the number of addressable units |
8614 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8615 | ||
8616 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8617 | exchange between gdb and the stub could look like (?? in place of the | |
8618 | checksum): | |
8619 | ||
8620 | -> $m1000,4#?? | |
8621 | <- aaaabbbbccccdddd | |
8622 | ||
8623 | -> $M1000,3:eeeeffffeeee#?? | |
8624 | <- OK | |
8625 | ||
8626 | -> $m1000,4#?? | |
8627 | <- eeeeffffeeeedddd */ | |
c906108c | 8628 | |
6b8edb51 PA |
8629 | target_xfer_status |
8630 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8631 | const gdb_byte *myaddr, | |
8632 | ULONGEST len_units, | |
8633 | int unit_size, | |
8634 | ULONGEST *xfered_len_units, | |
8635 | char packet_format, int use_length) | |
c906108c | 8636 | { |
6d820c5c | 8637 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8638 | char *p; |
a76d924d DJ |
8639 | char *plen = NULL; |
8640 | int plenlen = 0; | |
124e13d9 SM |
8641 | int todo_units; |
8642 | int units_written; | |
8643 | int payload_capacity_bytes; | |
8644 | int payload_length_bytes; | |
a76d924d DJ |
8645 | |
8646 | if (packet_format != 'X' && packet_format != 'M') | |
8647 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8648 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8649 | |
124e13d9 | 8650 | if (len_units == 0) |
9b409511 | 8651 | return TARGET_XFER_EOF; |
b2182ed2 | 8652 | |
124e13d9 | 8653 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8654 | |
6d820c5c DJ |
8655 | /* The packet buffer will be large enough for the payload; |
8656 | get_memory_packet_size ensures this. */ | |
a76d924d | 8657 | rs->buf[0] = '\0'; |
c906108c | 8658 | |
a257b5bb | 8659 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8660 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8661 | ||
124e13d9 | 8662 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8663 | if (!use_length) |
0df8b418 | 8664 | /* The comma won't be used. */ |
124e13d9 SM |
8665 | payload_capacity_bytes += 1; |
8666 | payload_capacity_bytes -= strlen (header); | |
8667 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8668 | |
a76d924d | 8669 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8670 | |
8d64371b TT |
8671 | strcat (rs->buf.data (), header); |
8672 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8673 | |
8674 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8675 | if (packet_format == 'X') | |
c906108c | 8676 | { |
23860348 | 8677 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8678 | todo_units = std::min (len_units, |
8679 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8680 | if (use_length) |
124e13d9 | 8681 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8682 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8683 | } |
8684 | else | |
8685 | { | |
124e13d9 | 8686 | /* Number of bytes that will fit. */ |
325fac50 PA |
8687 | todo_units |
8688 | = std::min (len_units, | |
8689 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8690 | if (use_length) |
124e13d9 | 8691 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8692 | todo_units = std::min (todo_units, |
8693 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8694 | } |
a76d924d | 8695 | |
124e13d9 | 8696 | if (todo_units <= 0) |
3de11b2e | 8697 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8698 | _("minimum packet size too small to write data")); |
802188a7 | 8699 | |
6765f3e5 DJ |
8700 | /* If we already need another packet, then try to align the end |
8701 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8702 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8703 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8704 | |
a257b5bb | 8705 | /* Append "<memaddr>". */ |
917317f4 JM |
8706 | memaddr = remote_address_masked (memaddr); |
8707 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8708 | |
a76d924d DJ |
8709 | if (use_length) |
8710 | { | |
8711 | /* Append ",". */ | |
8712 | *p++ = ','; | |
802188a7 | 8713 | |
124e13d9 | 8714 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 8715 | adjusted once the packet body has been created. */ |
a76d924d | 8716 | plen = p; |
124e13d9 | 8717 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8718 | p += plenlen; |
8719 | } | |
a257b5bb AC |
8720 | |
8721 | /* Append ":". */ | |
917317f4 JM |
8722 | *p++ = ':'; |
8723 | *p = '\0'; | |
802188a7 | 8724 | |
a257b5bb | 8725 | /* Append the packet body. */ |
a76d924d | 8726 | if (packet_format == 'X') |
917317f4 | 8727 | { |
917317f4 JM |
8728 | /* Binary mode. Send target system values byte by byte, in |
8729 | increasing byte addresses. Only escape certain critical | |
8730 | characters. */ | |
124e13d9 SM |
8731 | payload_length_bytes = |
8732 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8733 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8734 | |
124e13d9 | 8735 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8736 | a second try to keep the end of the packet aligned. Don't do |
8737 | this if the packet is tiny. */ | |
124e13d9 | 8738 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8739 | { |
124e13d9 SM |
8740 | int new_todo_units; |
8741 | ||
8742 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8743 | ||
8744 | if (new_todo_units != units_written) | |
8745 | payload_length_bytes = | |
8746 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8747 | (gdb_byte *) p, &units_written, | |
8748 | payload_capacity_bytes); | |
6765f3e5 DJ |
8749 | } |
8750 | ||
124e13d9 SM |
8751 | p += payload_length_bytes; |
8752 | if (use_length && units_written < todo_units) | |
c906108c | 8753 | { |
802188a7 | 8754 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8755 | and we have actually sent fewer units than planned. |
917317f4 JM |
8756 | Fix-up the length field of the packet. Use the same |
8757 | number of characters as before. */ | |
124e13d9 SM |
8758 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8759 | plenlen); | |
917317f4 | 8760 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8761 | } |
a76d924d DJ |
8762 | } |
8763 | else | |
8764 | { | |
917317f4 JM |
8765 | /* Normal mode: Send target system values byte by byte, in |
8766 | increasing byte addresses. Each byte is encoded as a two hex | |
8767 | value. */ | |
124e13d9 SM |
8768 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8769 | units_written = todo_units; | |
c906108c | 8770 | } |
802188a7 | 8771 | |
8d64371b TT |
8772 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8773 | getpkt (&rs->buf, 0); | |
802188a7 | 8774 | |
2e9f7625 | 8775 | if (rs->buf[0] == 'E') |
00d84524 | 8776 | return TARGET_XFER_E_IO; |
802188a7 | 8777 | |
124e13d9 SM |
8778 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8779 | send fewer units than we'd planned. */ | |
8780 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8781 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8782 | } |
8783 | ||
a76d924d DJ |
8784 | /* Write memory data directly to the remote machine. |
8785 | This does not inform the data cache; the data cache uses this. | |
8786 | MEMADDR is the address in the remote memory space. | |
8787 | MYADDR is the address of the buffer in our space. | |
8788 | LEN is the number of bytes. | |
8789 | ||
9b409511 YQ |
8790 | Return the transferred status, error or OK (an |
8791 | 'enum target_xfer_status' value). Save the number of bytes | |
8792 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8793 | |
6b8edb51 PA |
8794 | target_xfer_status |
8795 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
8796 | ULONGEST len, int unit_size, | |
8797 | ULONGEST *xfered_len) | |
a76d924d | 8798 | { |
a121b7c1 | 8799 | const char *packet_format = NULL; |
a76d924d DJ |
8800 | |
8801 | /* Check whether the target supports binary download. */ | |
8802 | check_binary_download (memaddr); | |
8803 | ||
4082afcc | 8804 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8805 | { |
8806 | case PACKET_ENABLE: | |
8807 | packet_format = "X"; | |
8808 | break; | |
8809 | case PACKET_DISABLE: | |
8810 | packet_format = "M"; | |
8811 | break; | |
8812 | case PACKET_SUPPORT_UNKNOWN: | |
8813 | internal_error (__FILE__, __LINE__, | |
8814 | _("remote_write_bytes: bad internal state")); | |
8815 | default: | |
8816 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8817 | } | |
8818 | ||
8819 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8820 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8821 | packet_format[0], 1); |
a76d924d DJ |
8822 | } |
8823 | ||
9217e74e YQ |
8824 | /* Read memory data directly from the remote machine. |
8825 | This does not use the data cache; the data cache uses this. | |
8826 | MEMADDR is the address in the remote memory space. | |
8827 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8828 | LEN_UNITS is the number of addressable memory units to read.. |
8829 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8830 | |
8831 | Return the transferred status, error or OK (an | |
8832 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8833 | transferred in *XFERED_LEN_UNITS. |
8834 | ||
8835 | See the comment of remote_write_bytes_aux for an example of | |
8836 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 8837 | |
6b8edb51 PA |
8838 | target_xfer_status |
8839 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
8840 | ULONGEST len_units, | |
8841 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8842 | { |
8843 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8844 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8845 | char *p; |
124e13d9 SM |
8846 | int todo_units; |
8847 | int decoded_bytes; | |
9217e74e | 8848 | |
124e13d9 | 8849 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8850 | /* The packet buffer will be large enough for the payload; |
8851 | get_memory_packet_size ensures this. */ | |
8852 | ||
124e13d9 | 8853 | /* Number of units that will fit. */ |
325fac50 PA |
8854 | todo_units = std::min (len_units, |
8855 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8856 | |
8857 | /* Construct "m"<memaddr>","<len>". */ | |
8858 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 8859 | p = rs->buf.data (); |
9217e74e YQ |
8860 | *p++ = 'm'; |
8861 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8862 | *p++ = ','; | |
124e13d9 | 8863 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8864 | *p = '\0'; |
8865 | putpkt (rs->buf); | |
8d64371b | 8866 | getpkt (&rs->buf, 0); |
9217e74e YQ |
8867 | if (rs->buf[0] == 'E' |
8868 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8869 | && rs->buf[3] == '\0') | |
8870 | return TARGET_XFER_E_IO; | |
8871 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8872 | characters. */ | |
8d64371b | 8873 | p = rs->buf.data (); |
124e13d9 | 8874 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8875 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8876 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8877 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8878 | } |
8879 | ||
b55fbac4 YQ |
8880 | /* Using the set of read-only target sections of remote, read live |
8881 | read-only memory. | |
8acf9577 YQ |
8882 | |
8883 | For interface/parameters/return description see target.h, | |
8884 | to_xfer_partial. */ | |
8885 | ||
6b8edb51 PA |
8886 | target_xfer_status |
8887 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
8888 | ULONGEST memaddr, | |
8889 | ULONGEST len, | |
8890 | int unit_size, | |
8891 | ULONGEST *xfered_len) | |
8acf9577 YQ |
8892 | { |
8893 | struct target_section *secp; | |
8acf9577 | 8894 | |
6b8edb51 | 8895 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 8896 | if (secp != NULL |
fd361982 | 8897 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 8898 | { |
8acf9577 YQ |
8899 | ULONGEST memend = memaddr + len; |
8900 | ||
d7a78e5c TT |
8901 | target_section_table *table = target_get_section_table (this); |
8902 | for (target_section &p : *table) | |
8acf9577 | 8903 | { |
bb2a6777 | 8904 | if (memaddr >= p.addr) |
8acf9577 | 8905 | { |
bb2a6777 | 8906 | if (memend <= p.endaddr) |
8acf9577 YQ |
8907 | { |
8908 | /* Entire transfer is within this section. */ | |
124e13d9 | 8909 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8910 | xfered_len); |
8acf9577 | 8911 | } |
bb2a6777 | 8912 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
8913 | { |
8914 | /* This section ends before the transfer starts. */ | |
8915 | continue; | |
8916 | } | |
8917 | else | |
8918 | { | |
8919 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 8920 | len = p.endaddr - memaddr; |
124e13d9 | 8921 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8922 | xfered_len); |
8acf9577 YQ |
8923 | } |
8924 | } | |
8925 | } | |
8926 | } | |
8927 | ||
8928 | return TARGET_XFER_EOF; | |
8929 | } | |
8930 | ||
9217e74e YQ |
8931 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8932 | first if the requested memory is unavailable in traceframe. | |
8933 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8934 | |
6b8edb51 PA |
8935 | target_xfer_status |
8936 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
8937 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
8938 | ULONGEST *xfered_len) | |
c906108c | 8939 | { |
6b6aa828 | 8940 | if (len == 0) |
96c4f946 | 8941 | return TARGET_XFER_EOF; |
b2182ed2 | 8942 | |
8acf9577 YQ |
8943 | if (get_traceframe_number () != -1) |
8944 | { | |
a79b1bc6 | 8945 | std::vector<mem_range> available; |
8acf9577 YQ |
8946 | |
8947 | /* If we fail to get the set of available memory, then the | |
8948 | target does not support querying traceframe info, and so we | |
8949 | attempt reading from the traceframe anyway (assuming the | |
8950 | target implements the old QTro packet then). */ | |
8951 | if (traceframe_available_memory (&available, memaddr, len)) | |
8952 | { | |
a79b1bc6 | 8953 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8954 | { |
8955 | enum target_xfer_status res; | |
8956 | ||
8957 | /* Don't read into the traceframe's available | |
8958 | memory. */ | |
a79b1bc6 | 8959 | if (!available.empty ()) |
8acf9577 YQ |
8960 | { |
8961 | LONGEST oldlen = len; | |
8962 | ||
a79b1bc6 | 8963 | len = available[0].start - memaddr; |
8acf9577 YQ |
8964 | gdb_assert (len <= oldlen); |
8965 | } | |
8966 | ||
8acf9577 | 8967 | /* This goes through the topmost target again. */ |
6b8edb51 | 8968 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 8969 | len, unit_size, xfered_len); |
8acf9577 YQ |
8970 | if (res == TARGET_XFER_OK) |
8971 | return TARGET_XFER_OK; | |
8972 | else | |
8973 | { | |
8974 | /* No use trying further, we know some memory starting | |
8975 | at MEMADDR isn't available. */ | |
8976 | *xfered_len = len; | |
92ffd475 PC |
8977 | return (*xfered_len != 0) ? |
8978 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8979 | } |
8980 | } | |
8981 | ||
8982 | /* Don't try to read more than how much is available, in | |
8983 | case the target implements the deprecated QTro packet to | |
8984 | cater for older GDBs (the target's knowledge of read-only | |
8985 | sections may be outdated by now). */ | |
a79b1bc6 | 8986 | len = available[0].length; |
8acf9577 YQ |
8987 | } |
8988 | } | |
8989 | ||
124e13d9 | 8990 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8991 | } |
74531fed | 8992 | |
c906108c | 8993 | \f |
c906108c | 8994 | |
a76d924d DJ |
8995 | /* Sends a packet with content determined by the printf format string |
8996 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8997 | whether the packet was a success, a failure, or unknown. */ | |
8998 | ||
6b8edb51 PA |
8999 | packet_result |
9000 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9001 | { |
9002 | struct remote_state *rs = get_remote_state (); | |
9003 | int max_size = get_remote_packet_size (); | |
a76d924d | 9004 | va_list ap; |
a744cf53 | 9005 | |
a76d924d DJ |
9006 | va_start (ap, format); |
9007 | ||
9008 | rs->buf[0] = '\0'; | |
8d64371b | 9009 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9010 | |
9011 | va_end (ap); | |
9012 | ||
9013 | if (size >= max_size) | |
9b20d036 | 9014 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
9015 | |
9016 | if (putpkt (rs->buf) < 0) | |
9017 | error (_("Communication problem with target.")); | |
9018 | ||
9019 | rs->buf[0] = '\0'; | |
8d64371b | 9020 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9021 | |
9022 | return packet_check_result (rs->buf); | |
9023 | } | |
9024 | ||
a76d924d DJ |
9025 | /* Flash writing can take quite some time. We'll set |
9026 | effectively infinite timeout for flash operations. | |
9027 | In future, we'll need to decide on a better approach. */ | |
9028 | static const int remote_flash_timeout = 1000; | |
9029 | ||
f6ac5f3d PA |
9030 | void |
9031 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9032 | { |
f5656ead | 9033 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9034 | enum packet_result ret; |
2ec845e7 TT |
9035 | scoped_restore restore_timeout |
9036 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9037 | |
9038 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9039 | phex (address, addr_size), |
a76d924d DJ |
9040 | phex (length, 4)); |
9041 | switch (ret) | |
9042 | { | |
9043 | case PACKET_UNKNOWN: | |
9044 | error (_("Remote target does not support flash erase")); | |
9045 | case PACKET_ERROR: | |
9046 | error (_("Error erasing flash with vFlashErase packet")); | |
9047 | default: | |
9048 | break; | |
9049 | } | |
a76d924d DJ |
9050 | } |
9051 | ||
6b8edb51 PA |
9052 | target_xfer_status |
9053 | remote_target::remote_flash_write (ULONGEST address, | |
9054 | ULONGEST length, ULONGEST *xfered_len, | |
9055 | const gdb_byte *data) | |
a76d924d | 9056 | { |
2ec845e7 TT |
9057 | scoped_restore restore_timeout |
9058 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9059 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9060 | xfered_len,'X', 0); | |
a76d924d DJ |
9061 | } |
9062 | ||
f6ac5f3d PA |
9063 | void |
9064 | remote_target::flash_done () | |
a76d924d | 9065 | { |
a76d924d | 9066 | int ret; |
a76d924d | 9067 | |
2ec845e7 TT |
9068 | scoped_restore restore_timeout |
9069 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9070 | ||
a76d924d | 9071 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9072 | |
9073 | switch (ret) | |
9074 | { | |
9075 | case PACKET_UNKNOWN: | |
9076 | error (_("Remote target does not support vFlashDone")); | |
9077 | case PACKET_ERROR: | |
9078 | error (_("Error finishing flash operation")); | |
9079 | default: | |
9080 | break; | |
9081 | } | |
9082 | } | |
9083 | ||
f6ac5f3d PA |
9084 | void |
9085 | remote_target::files_info () | |
c906108c SS |
9086 | { |
9087 | puts_filtered ("Debugging a target over a serial line.\n"); | |
9088 | } | |
9089 | \f | |
9090 | /* Stuff for dealing with the packets which are part of this protocol. | |
9091 | See comment at top of file for details. */ | |
9092 | ||
1927e618 PA |
9093 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9094 | error to higher layers. Called when a serial error is detected. | |
9095 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9096 | the system error message for errno at function entry and final dot |
9097 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9098 | |
9099 | static void | |
5b6d1e4f | 9100 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9101 | { |
d6cb50a2 | 9102 | int saved_errno = errno; |
1927e618 | 9103 | |
5b6d1e4f | 9104 | remote_unpush_target (target); |
d6cb50a2 JK |
9105 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9106 | safe_strerror (saved_errno)); | |
1927e618 PA |
9107 | } |
9108 | ||
048094ac PA |
9109 | /* Read a single character from the remote end. The current quit |
9110 | handler is overridden to avoid quitting in the middle of packet | |
9111 | sequence, as that would break communication with the remote server. | |
9112 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9113 | |
6b8edb51 PA |
9114 | int |
9115 | remote_target::readchar (int timeout) | |
c906108c SS |
9116 | { |
9117 | int ch; | |
5d93a237 | 9118 | struct remote_state *rs = get_remote_state (); |
048094ac | 9119 | |
2ec845e7 | 9120 | { |
6b8edb51 PA |
9121 | scoped_restore restore_quit_target |
9122 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9123 | scoped_restore restore_quit |
6b8edb51 | 9124 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9125 | |
2ec845e7 | 9126 | rs->got_ctrlc_during_io = 0; |
c906108c | 9127 | |
2ec845e7 | 9128 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9129 | |
2ec845e7 TT |
9130 | if (rs->got_ctrlc_during_io) |
9131 | set_quit_flag (); | |
9132 | } | |
048094ac | 9133 | |
2acceee2 | 9134 | if (ch >= 0) |
0876f84a | 9135 | return ch; |
2acceee2 JM |
9136 | |
9137 | switch ((enum serial_rc) ch) | |
c906108c SS |
9138 | { |
9139 | case SERIAL_EOF: | |
5b6d1e4f | 9140 | remote_unpush_target (this); |
598d3636 | 9141 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9142 | /* no return */ |
c906108c | 9143 | case SERIAL_ERROR: |
5b6d1e4f PA |
9144 | unpush_and_perror (this, _("Remote communication error. " |
9145 | "Target disconnected.")); | |
2acceee2 | 9146 | /* no return */ |
c906108c | 9147 | case SERIAL_TIMEOUT: |
2acceee2 | 9148 | break; |
c906108c | 9149 | } |
2acceee2 | 9150 | return ch; |
c906108c SS |
9151 | } |
9152 | ||
c33e31fd | 9153 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9154 | writing fails. The current quit handler is overridden to avoid |
9155 | quitting in the middle of packet sequence, as that would break | |
9156 | communication with the remote server. See | |
9157 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9158 | |
6b8edb51 PA |
9159 | void |
9160 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9161 | { |
5d93a237 | 9162 | struct remote_state *rs = get_remote_state (); |
048094ac | 9163 | |
6b8edb51 PA |
9164 | scoped_restore restore_quit_target |
9165 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9166 | scoped_restore restore_quit |
6b8edb51 | 9167 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9168 | |
9169 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9170 | |
9171 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9172 | { |
5b6d1e4f PA |
9173 | unpush_and_perror (this, _("Remote communication error. " |
9174 | "Target disconnected.")); | |
c33e31fd | 9175 | } |
048094ac PA |
9176 | |
9177 | if (rs->got_ctrlc_during_io) | |
9178 | set_quit_flag (); | |
c33e31fd PA |
9179 | } |
9180 | ||
b3ced9ba PA |
9181 | /* Return a string representing an escaped version of BUF, of len N. |
9182 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9183 | |
b3ced9ba | 9184 | static std::string |
6e5abd65 PA |
9185 | escape_buffer (const char *buf, int n) |
9186 | { | |
d7e74731 | 9187 | string_file stb; |
6e5abd65 | 9188 | |
d7e74731 PA |
9189 | stb.putstrn (buf, n, '\\'); |
9190 | return std::move (stb.string ()); | |
6e5abd65 PA |
9191 | } |
9192 | ||
c906108c SS |
9193 | /* Display a null-terminated packet on stdout, for debugging, using C |
9194 | string notation. */ | |
9195 | ||
9196 | static void | |
baa336ce | 9197 | print_packet (const char *buf) |
c906108c SS |
9198 | { |
9199 | puts_filtered ("\""); | |
43e526b9 | 9200 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9201 | puts_filtered ("\""); |
9202 | } | |
9203 | ||
9204 | int | |
6b8edb51 | 9205 | remote_target::putpkt (const char *buf) |
c906108c SS |
9206 | { |
9207 | return putpkt_binary (buf, strlen (buf)); | |
9208 | } | |
9209 | ||
6b8edb51 PA |
9210 | /* Wrapper around remote_target::putpkt to avoid exporting |
9211 | remote_target. */ | |
9212 | ||
9213 | int | |
9214 | putpkt (remote_target *remote, const char *buf) | |
9215 | { | |
9216 | return remote->putpkt (buf); | |
9217 | } | |
9218 | ||
c906108c | 9219 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9220 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9221 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9222 | and for a possible /0 if we are debugging (remote_debug) and want |
9223 | to print the sent packet as a string. */ | |
c906108c | 9224 | |
6b8edb51 PA |
9225 | int |
9226 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9227 | { |
2d717e4f | 9228 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9229 | int i; |
9230 | unsigned char csum = 0; | |
b80406ac TT |
9231 | gdb::def_vector<char> data (cnt + 6); |
9232 | char *buf2 = data.data (); | |
085dd6e6 | 9233 | |
c906108c SS |
9234 | int ch; |
9235 | int tcount = 0; | |
9236 | char *p; | |
9237 | ||
e24a49d8 PA |
9238 | /* Catch cases like trying to read memory or listing threads while |
9239 | we're waiting for a stop reply. The remote server wouldn't be | |
9240 | ready to handle this request, so we'd hang and timeout. We don't | |
9241 | have to worry about this in synchronous mode, because in that | |
9242 | case it's not possible to issue a command while the target is | |
74531fed PA |
9243 | running. This is not a problem in non-stop mode, because in that |
9244 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9245 | if (!target_is_non_stop_p () |
9246 | && target_is_async_p () | |
9247 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9248 | { |
9249 | error (_("Cannot execute this command while the target is running.\n" | |
9250 | "Use the \"interrupt\" command to stop the target\n" | |
9251 | "and then try again.")); | |
9252 | } | |
e24a49d8 | 9253 | |
2d717e4f DJ |
9254 | /* We're sending out a new packet. Make sure we don't look at a |
9255 | stale cached response. */ | |
9256 | rs->cached_wait_status = 0; | |
9257 | ||
c906108c SS |
9258 | /* Copy the packet into buffer BUF2, encapsulating it |
9259 | and giving it a checksum. */ | |
9260 | ||
c906108c SS |
9261 | p = buf2; |
9262 | *p++ = '$'; | |
9263 | ||
9264 | for (i = 0; i < cnt; i++) | |
9265 | { | |
9266 | csum += buf[i]; | |
9267 | *p++ = buf[i]; | |
9268 | } | |
9269 | *p++ = '#'; | |
9270 | *p++ = tohex ((csum >> 4) & 0xf); | |
9271 | *p++ = tohex (csum & 0xf); | |
9272 | ||
9273 | /* Send it over and over until we get a positive ack. */ | |
9274 | ||
9275 | while (1) | |
9276 | { | |
9277 | int started_error_output = 0; | |
9278 | ||
9279 | if (remote_debug) | |
9280 | { | |
9281 | *p = '\0'; | |
b3ced9ba | 9282 | |
6f8976bf | 9283 | int len = (int) (p - buf2); |
6cc8564b LM |
9284 | int max_chars; |
9285 | ||
9286 | if (remote_packet_max_chars < 0) | |
9287 | max_chars = len; | |
9288 | else | |
9289 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9290 | |
9291 | std::string str | |
6cc8564b | 9292 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf YQ |
9293 | |
9294 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9295 | ||
6cc8564b | 9296 | if (len > max_chars) |
567a3e54 | 9297 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", |
6cc8564b | 9298 | len - max_chars); |
6f8976bf YQ |
9299 | |
9300 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9301 | |
0f71a2f6 | 9302 | gdb_flush (gdb_stdlog); |
c906108c | 9303 | } |
c33e31fd | 9304 | remote_serial_write (buf2, p - buf2); |
c906108c | 9305 | |
a6f3e723 SL |
9306 | /* If this is a no acks version of the remote protocol, send the |
9307 | packet and move on. */ | |
9308 | if (rs->noack_mode) | |
dda83cd7 | 9309 | break; |
a6f3e723 | 9310 | |
74531fed PA |
9311 | /* Read until either a timeout occurs (-2) or '+' is read. |
9312 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9313 | while (1) |
9314 | { | |
9315 | ch = readchar (remote_timeout); | |
9316 | ||
c5aa993b | 9317 | if (remote_debug) |
c906108c SS |
9318 | { |
9319 | switch (ch) | |
9320 | { | |
9321 | case '+': | |
1216fa2c | 9322 | case '-': |
c906108c SS |
9323 | case SERIAL_TIMEOUT: |
9324 | case '$': | |
74531fed | 9325 | case '%': |
c906108c SS |
9326 | if (started_error_output) |
9327 | { | |
9328 | putchar_unfiltered ('\n'); | |
9329 | started_error_output = 0; | |
9330 | } | |
9331 | } | |
9332 | } | |
9333 | ||
9334 | switch (ch) | |
9335 | { | |
9336 | case '+': | |
9337 | if (remote_debug) | |
0f71a2f6 | 9338 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9339 | return 1; |
1216fa2c AC |
9340 | case '-': |
9341 | if (remote_debug) | |
9342 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9343 | /* FALLTHROUGH */ |
c906108c | 9344 | case SERIAL_TIMEOUT: |
c5aa993b | 9345 | tcount++; |
c906108c | 9346 | if (tcount > 3) |
b80406ac | 9347 | return 0; |
23860348 | 9348 | break; /* Retransmit buffer. */ |
c906108c SS |
9349 | case '$': |
9350 | { | |
dda83cd7 | 9351 | if (remote_debug) |
2bc416ba | 9352 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9353 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9354 | /* It's probably an old response sent because an ACK |
9355 | was lost. Gobble up the packet and ack it so it | |
9356 | doesn't get retransmitted when we resend this | |
9357 | packet. */ | |
6d820c5c | 9358 | skip_frame (); |
c33e31fd | 9359 | remote_serial_write ("+", 1); |
23860348 | 9360 | continue; /* Now, go look for +. */ |
c906108c | 9361 | } |
74531fed PA |
9362 | |
9363 | case '%': | |
9364 | { | |
9365 | int val; | |
9366 | ||
9367 | /* If we got a notification, handle it, and go back to looking | |
9368 | for an ack. */ | |
9369 | /* We've found the start of a notification. Now | |
9370 | collect the data. */ | |
8d64371b | 9371 | val = read_frame (&rs->buf); |
74531fed PA |
9372 | if (val >= 0) |
9373 | { | |
9374 | if (remote_debug) | |
9375 | { | |
8d64371b | 9376 | std::string str = escape_buffer (rs->buf.data (), val); |
6e5abd65 | 9377 | |
6e5abd65 PA |
9378 | fprintf_unfiltered (gdb_stdlog, |
9379 | " Notification received: %s\n", | |
b3ced9ba | 9380 | str.c_str ()); |
74531fed | 9381 | } |
8d64371b | 9382 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9383 | /* We're in sync now, rewait for the ack. */ |
9384 | tcount = 0; | |
9385 | } | |
9386 | else | |
9387 | { | |
9388 | if (remote_debug) | |
9389 | { | |
9390 | if (!started_error_output) | |
9391 | { | |
9392 | started_error_output = 1; | |
9393 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9394 | } | |
9395 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8d64371b | 9396 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf.data ()); |
74531fed PA |
9397 | } |
9398 | } | |
9399 | continue; | |
9400 | } | |
9401 | /* fall-through */ | |
c906108c SS |
9402 | default: |
9403 | if (remote_debug) | |
9404 | { | |
9405 | if (!started_error_output) | |
9406 | { | |
9407 | started_error_output = 1; | |
0f71a2f6 | 9408 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9409 | } |
0f71a2f6 | 9410 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9411 | } |
9412 | continue; | |
9413 | } | |
23860348 | 9414 | break; /* Here to retransmit. */ |
c906108c SS |
9415 | } |
9416 | ||
9417 | #if 0 | |
9418 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9419 | able to get out next time we call QUIT, without anything as |
9420 | violent as interrupt_query. If we want to provide a way out of | |
9421 | here without getting to the next QUIT, it should be based on | |
9422 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9423 | if (quit_flag) |
9424 | { | |
9425 | quit_flag = 0; | |
9426 | interrupt_query (); | |
9427 | } | |
9428 | #endif | |
9429 | } | |
a5c0808e | 9430 | |
a6f3e723 | 9431 | return 0; |
c906108c SS |
9432 | } |
9433 | ||
6d820c5c DJ |
9434 | /* Come here after finding the start of a frame when we expected an |
9435 | ack. Do our best to discard the rest of this packet. */ | |
9436 | ||
6b8edb51 PA |
9437 | void |
9438 | remote_target::skip_frame () | |
6d820c5c DJ |
9439 | { |
9440 | int c; | |
9441 | ||
9442 | while (1) | |
9443 | { | |
9444 | c = readchar (remote_timeout); | |
9445 | switch (c) | |
9446 | { | |
9447 | case SERIAL_TIMEOUT: | |
9448 | /* Nothing we can do. */ | |
9449 | return; | |
9450 | case '#': | |
9451 | /* Discard the two bytes of checksum and stop. */ | |
9452 | c = readchar (remote_timeout); | |
9453 | if (c >= 0) | |
9454 | c = readchar (remote_timeout); | |
9455 | ||
9456 | return; | |
9457 | case '*': /* Run length encoding. */ | |
9458 | /* Discard the repeat count. */ | |
9459 | c = readchar (remote_timeout); | |
9460 | if (c < 0) | |
9461 | return; | |
9462 | break; | |
9463 | default: | |
9464 | /* A regular character. */ | |
9465 | break; | |
9466 | } | |
9467 | } | |
9468 | } | |
9469 | ||
c906108c | 9470 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9471 | into *BUF, verifying the checksum, length, and handling run-length |
9472 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9473 | expand *BUF. |
c906108c | 9474 | |
c2d11a7d JM |
9475 | Returns -1 on error, number of characters in buffer (ignoring the |
9476 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9477 | SERIAL status indications). */ |
c2d11a7d | 9478 | |
6b8edb51 | 9479 | long |
8d64371b | 9480 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9481 | { |
9482 | unsigned char csum; | |
c2d11a7d | 9483 | long bc; |
c906108c | 9484 | int c; |
8d64371b | 9485 | char *buf = buf_p->data (); |
a6f3e723 | 9486 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9487 | |
9488 | csum = 0; | |
c2d11a7d | 9489 | bc = 0; |
c906108c SS |
9490 | |
9491 | while (1) | |
9492 | { | |
9493 | c = readchar (remote_timeout); | |
c906108c SS |
9494 | switch (c) |
9495 | { | |
9496 | case SERIAL_TIMEOUT: | |
9497 | if (remote_debug) | |
0f71a2f6 | 9498 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9499 | return -1; |
c906108c SS |
9500 | case '$': |
9501 | if (remote_debug) | |
0f71a2f6 JM |
9502 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9503 | gdb_stdlog); | |
23860348 | 9504 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9505 | case '#': |
9506 | { | |
9507 | unsigned char pktcsum; | |
e1b09194 AC |
9508 | int check_0 = 0; |
9509 | int check_1 = 0; | |
c906108c | 9510 | |
c2d11a7d | 9511 | buf[bc] = '\0'; |
c906108c | 9512 | |
e1b09194 AC |
9513 | check_0 = readchar (remote_timeout); |
9514 | if (check_0 >= 0) | |
9515 | check_1 = readchar (remote_timeout); | |
802188a7 | 9516 | |
e1b09194 AC |
9517 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9518 | { | |
9519 | if (remote_debug) | |
2bc416ba | 9520 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9521 | gdb_stdlog); |
e1b09194 AC |
9522 | return -1; |
9523 | } | |
9524 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9525 | { |
9526 | if (remote_debug) | |
2bc416ba | 9527 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9528 | gdb_stdlog); |
40e3f985 FN |
9529 | return -1; |
9530 | } | |
c906108c | 9531 | |
a6f3e723 SL |
9532 | /* Don't recompute the checksum; with no ack packets we |
9533 | don't have any way to indicate a packet retransmission | |
9534 | is necessary. */ | |
9535 | if (rs->noack_mode) | |
9536 | return bc; | |
9537 | ||
e1b09194 | 9538 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9539 | if (csum == pktcsum) |
dda83cd7 | 9540 | return bc; |
c906108c | 9541 | |
c5aa993b | 9542 | if (remote_debug) |
c906108c | 9543 | { |
b3ced9ba | 9544 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9545 | |
6e5abd65 | 9546 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9547 | "Bad checksum, sentsum=0x%x, " |
9548 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9549 | pktcsum, csum, str.c_str ()); |
c906108c | 9550 | } |
c2d11a7d | 9551 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9552 | NULL. */ |
c2d11a7d | 9553 | return -1; |
c906108c | 9554 | } |
23860348 | 9555 | case '*': /* Run length encoding. */ |
dda83cd7 | 9556 | { |
c2c6d25f | 9557 | int repeat; |
c906108c | 9558 | |
a744cf53 | 9559 | csum += c; |
b4501125 AC |
9560 | c = readchar (remote_timeout); |
9561 | csum += c; | |
23860348 | 9562 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9563 | |
23860348 | 9564 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9565 | |
6d820c5c | 9566 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9567 | { |
8d64371b | 9568 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9569 | { |
9570 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9571 | buf_p->resize (buf_p->size () + repeat); |
9572 | buf = buf_p->data (); | |
6d820c5c DJ |
9573 | } |
9574 | ||
c2d11a7d JM |
9575 | memset (&buf[bc], buf[bc - 1], repeat); |
9576 | bc += repeat; | |
c2c6d25f JM |
9577 | continue; |
9578 | } | |
9579 | ||
c2d11a7d | 9580 | buf[bc] = '\0'; |
6d820c5c | 9581 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9582 | return -1; |
c2c6d25f | 9583 | } |
c906108c | 9584 | default: |
8d64371b | 9585 | if (bc >= buf_p->size () - 1) |
c906108c | 9586 | { |
6d820c5c | 9587 | /* Make some more room in the buffer. */ |
8d64371b TT |
9588 | buf_p->resize (buf_p->size () * 2); |
9589 | buf = buf_p->data (); | |
c906108c SS |
9590 | } |
9591 | ||
6d820c5c DJ |
9592 | buf[bc++] = c; |
9593 | csum += c; | |
9594 | continue; | |
c906108c SS |
9595 | } |
9596 | } | |
9597 | } | |
9598 | ||
ed2b7c17 TT |
9599 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9600 | in target_wait(). If this timer times out, then it generates an error and | |
9601 | the command is aborted. This replaces most of the need for timeouts in the | |
9602 | GDB test suite, and makes it possible to distinguish between a hung target | |
9603 | and one with slow communications. */ | |
9604 | ||
9605 | static int watchdog = 0; | |
9606 | static void | |
9607 | show_watchdog (struct ui_file *file, int from_tty, | |
9608 | struct cmd_list_element *c, const char *value) | |
9609 | { | |
9610 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9611 | } | |
9612 | ||
c906108c | 9613 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9614 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9615 | FOREVER, wait forever rather than timing out; this is used (in | |
9616 | synchronous mode) to wait for a target that is is executing user | |
9617 | code to stop. */ | |
d9fcf2fb JM |
9618 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9619 | don't have to change all the calls to getpkt to deal with the | |
9620 | return value, because at the moment I don't know what the right | |
23860348 | 9621 | thing to do it for those. */ |
6b8edb51 | 9622 | |
c906108c | 9623 | void |
8d64371b | 9624 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9625 | { |
8d64371b | 9626 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9627 | } |
9628 | ||
9629 | ||
9630 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9631 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9632 | FOREVER, wait forever rather than timing out; this is used (in | |
9633 | synchronous mode) to wait for a target that is is executing user | |
9634 | code to stop. If FOREVER == 0, this function is allowed to time | |
9635 | out gracefully and return an indication of this to the caller. | |
9636 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9637 | consider receiving a notification enough reason to return to the | |
9638 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9639 | holds a notification or not (a regular packet). */ | |
74531fed | 9640 | |
6b8edb51 | 9641 | int |
8d64371b | 9642 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9643 | int forever, int expecting_notif, |
9644 | int *is_notif) | |
c906108c | 9645 | { |
2d717e4f | 9646 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9647 | int c; |
9648 | int tries; | |
9649 | int timeout; | |
df4b58fe | 9650 | int val = -1; |
c906108c | 9651 | |
2d717e4f DJ |
9652 | /* We're reading a new response. Make sure we don't look at a |
9653 | previously cached response. */ | |
9654 | rs->cached_wait_status = 0; | |
9655 | ||
8d64371b | 9656 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9657 | |
9658 | if (forever) | |
74531fed PA |
9659 | timeout = watchdog > 0 ? watchdog : -1; |
9660 | else if (expecting_notif) | |
9661 | timeout = 0; /* There should already be a char in the buffer. If | |
9662 | not, bail out. */ | |
c906108c SS |
9663 | else |
9664 | timeout = remote_timeout; | |
9665 | ||
9666 | #define MAX_TRIES 3 | |
9667 | ||
74531fed PA |
9668 | /* Process any number of notifications, and then return when |
9669 | we get a packet. */ | |
9670 | for (;;) | |
c906108c | 9671 | { |
d9c43928 | 9672 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9673 | times. */ |
9674 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9675 | { |
74531fed PA |
9676 | /* This can loop forever if the remote side sends us |
9677 | characters continuously, but if it pauses, we'll get | |
9678 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9679 | we'll count that as a retry. | |
9680 | ||
9681 | Note that even when forever is set, we will only wait | |
9682 | forever prior to the start of a packet. After that, we | |
9683 | expect characters to arrive at a brisk pace. They should | |
9684 | show up within remote_timeout intervals. */ | |
9685 | do | |
9686 | c = readchar (timeout); | |
9687 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9688 | |
9689 | if (c == SERIAL_TIMEOUT) | |
9690 | { | |
74531fed PA |
9691 | if (expecting_notif) |
9692 | return -1; /* Don't complain, it's normal to not get | |
9693 | anything in this case. */ | |
9694 | ||
23860348 | 9695 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9696 | { |
5b6d1e4f | 9697 | remote_unpush_target (this); |
598d3636 JK |
9698 | throw_error (TARGET_CLOSE_ERROR, |
9699 | _("Watchdog timeout has expired. " | |
9700 | "Target detached.")); | |
c906108c | 9701 | } |
c906108c | 9702 | if (remote_debug) |
0f71a2f6 | 9703 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9704 | } |
74531fed PA |
9705 | else |
9706 | { | |
9707 | /* We've found the start of a packet or notification. | |
9708 | Now collect the data. */ | |
8d64371b | 9709 | val = read_frame (buf); |
74531fed PA |
9710 | if (val >= 0) |
9711 | break; | |
9712 | } | |
9713 | ||
c33e31fd | 9714 | remote_serial_write ("-", 1); |
c906108c | 9715 | } |
c906108c | 9716 | |
74531fed PA |
9717 | if (tries > MAX_TRIES) |
9718 | { | |
9719 | /* We have tried hard enough, and just can't receive the | |
9720 | packet/notification. Give up. */ | |
9721 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9722 | |
74531fed PA |
9723 | /* Skip the ack char if we're in no-ack mode. */ |
9724 | if (!rs->noack_mode) | |
c33e31fd | 9725 | remote_serial_write ("+", 1); |
74531fed PA |
9726 | return -1; |
9727 | } | |
c906108c | 9728 | |
74531fed PA |
9729 | /* If we got an ordinary packet, return that to our caller. */ |
9730 | if (c == '$') | |
c906108c SS |
9731 | { |
9732 | if (remote_debug) | |
43e526b9 | 9733 | { |
6cc8564b LM |
9734 | int max_chars; |
9735 | ||
9736 | if (remote_packet_max_chars < 0) | |
9737 | max_chars = val; | |
9738 | else | |
9739 | max_chars = remote_packet_max_chars; | |
9740 | ||
6f8976bf | 9741 | std::string str |
8d64371b | 9742 | = escape_buffer (buf->data (), |
6cc8564b | 9743 | std::min (val, max_chars)); |
6f8976bf YQ |
9744 | |
9745 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9746 | str.c_str ()); | |
9747 | ||
6cc8564b | 9748 | if (val > max_chars) |
567a3e54 | 9749 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", |
6cc8564b | 9750 | val - max_chars); |
6e5abd65 | 9751 | |
6f8976bf | 9752 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9753 | } |
a6f3e723 SL |
9754 | |
9755 | /* Skip the ack char if we're in no-ack mode. */ | |
9756 | if (!rs->noack_mode) | |
c33e31fd | 9757 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9758 | if (is_notif != NULL) |
9759 | *is_notif = 0; | |
0876f84a | 9760 | return val; |
c906108c SS |
9761 | } |
9762 | ||
74531fed PA |
9763 | /* If we got a notification, handle it, and go back to looking |
9764 | for a packet. */ | |
9765 | else | |
9766 | { | |
9767 | gdb_assert (c == '%'); | |
9768 | ||
9769 | if (remote_debug) | |
9770 | { | |
8d64371b | 9771 | std::string str = escape_buffer (buf->data (), val); |
6e5abd65 | 9772 | |
6e5abd65 PA |
9773 | fprintf_unfiltered (gdb_stdlog, |
9774 | " Notification received: %s\n", | |
b3ced9ba | 9775 | str.c_str ()); |
74531fed | 9776 | } |
fee9eda9 YQ |
9777 | if (is_notif != NULL) |
9778 | *is_notif = 1; | |
c906108c | 9779 | |
8d64371b | 9780 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 9781 | |
74531fed | 9782 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9783 | |
74531fed | 9784 | if (expecting_notif) |
fee9eda9 | 9785 | return val; |
74531fed PA |
9786 | } |
9787 | } | |
9788 | } | |
9789 | ||
6b8edb51 | 9790 | int |
8d64371b | 9791 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 9792 | { |
8d64371b | 9793 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
9794 | } |
9795 | ||
6b8edb51 | 9796 | int |
8d64371b | 9797 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 9798 | int *is_notif) |
74531fed | 9799 | { |
8d64371b | 9800 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 9801 | } |
74531fed | 9802 | |
cbb8991c DB |
9803 | /* Kill any new fork children of process PID that haven't been |
9804 | processed by follow_fork. */ | |
9805 | ||
6b8edb51 PA |
9806 | void |
9807 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 9808 | { |
6b8edb51 | 9809 | remote_state *rs = get_remote_state (); |
cbb8991c | 9810 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
9811 | |
9812 | /* Kill the fork child threads of any threads in process PID | |
9813 | that are stopped at a fork event. */ | |
5b6d1e4f | 9814 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c DB |
9815 | { |
9816 | struct target_waitstatus *ws = &thread->pending_follow; | |
9817 | ||
9818 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9819 | { | |
953edf2b | 9820 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
9821 | int res; |
9822 | ||
6b8edb51 | 9823 | res = remote_vkill (child_pid); |
cbb8991c DB |
9824 | if (res != 0) |
9825 | error (_("Can't kill fork child process %d"), child_pid); | |
9826 | } | |
9827 | } | |
9828 | ||
9829 | /* Check for any pending fork events (not reported or processed yet) | |
9830 | in process PID and kill those fork child threads as well. */ | |
9831 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
9832 | for (auto &event : rs->stop_reply_queue) |
9833 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
9834 | { | |
9835 | int child_pid = event->ws.value.related_pid.pid (); | |
9836 | int res; | |
9837 | ||
9838 | res = remote_vkill (child_pid); | |
9839 | if (res != 0) | |
9840 | error (_("Can't kill fork child process %d"), child_pid); | |
9841 | } | |
cbb8991c DB |
9842 | } |
9843 | ||
c906108c | 9844 | \f |
8020350c DB |
9845 | /* Target hook to kill the current inferior. */ |
9846 | ||
f6ac5f3d PA |
9847 | void |
9848 | remote_target::kill () | |
43ff13b4 | 9849 | { |
8020350c | 9850 | int res = -1; |
e99b03dc | 9851 | int pid = inferior_ptid.pid (); |
8020350c | 9852 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 9853 | |
8020350c | 9854 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9855 | { |
8020350c DB |
9856 | /* If we're stopped while forking and we haven't followed yet, |
9857 | kill the child task. We need to do this before killing the | |
9858 | parent task because if this is a vfork then the parent will | |
9859 | be sleeping. */ | |
6b8edb51 | 9860 | kill_new_fork_children (pid); |
8020350c | 9861 | |
6b8edb51 | 9862 | res = remote_vkill (pid); |
8020350c | 9863 | if (res == 0) |
0fdf84ca | 9864 | { |
bc1e6c81 | 9865 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9866 | return; |
9867 | } | |
8020350c | 9868 | } |
0fdf84ca | 9869 | |
8020350c DB |
9870 | /* If we are in 'target remote' mode and we are killing the only |
9871 | inferior, then we will tell gdbserver to exit and unpush the | |
9872 | target. */ | |
9873 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 9874 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
9875 | { |
9876 | remote_kill_k (); | |
9877 | ||
9878 | /* We've killed the remote end, we get to mourn it. If we are | |
9879 | not in extended mode, mourning the inferior also unpushes | |
9880 | remote_ops from the target stack, which closes the remote | |
9881 | connection. */ | |
bc1e6c81 | 9882 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9883 | |
9884 | return; | |
0fdf84ca | 9885 | } |
43ff13b4 | 9886 | |
8020350c | 9887 | error (_("Can't kill process")); |
43ff13b4 JM |
9888 | } |
9889 | ||
8020350c DB |
9890 | /* Send a kill request to the target using the 'vKill' packet. */ |
9891 | ||
6b8edb51 PA |
9892 | int |
9893 | remote_target::remote_vkill (int pid) | |
82f73884 | 9894 | { |
4082afcc | 9895 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9896 | return -1; |
9897 | ||
6b8edb51 PA |
9898 | remote_state *rs = get_remote_state (); |
9899 | ||
82f73884 | 9900 | /* Tell the remote target to detach. */ |
8d64371b | 9901 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 9902 | putpkt (rs->buf); |
8d64371b | 9903 | getpkt (&rs->buf, 0); |
82f73884 | 9904 | |
4082afcc PA |
9905 | switch (packet_ok (rs->buf, |
9906 | &remote_protocol_packets[PACKET_vKill])) | |
9907 | { | |
9908 | case PACKET_OK: | |
9909 | return 0; | |
9910 | case PACKET_ERROR: | |
9911 | return 1; | |
9912 | case PACKET_UNKNOWN: | |
9913 | return -1; | |
9914 | default: | |
9915 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9916 | } | |
82f73884 PA |
9917 | } |
9918 | ||
8020350c DB |
9919 | /* Send a kill request to the target using the 'k' packet. */ |
9920 | ||
6b8edb51 PA |
9921 | void |
9922 | remote_target::remote_kill_k () | |
82f73884 | 9923 | { |
8020350c DB |
9924 | /* Catch errors so the user can quit from gdb even when we |
9925 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 9926 | try |
82f73884 | 9927 | { |
82f73884 | 9928 | putpkt ("k"); |
82f73884 | 9929 | } |
230d2906 | 9930 | catch (const gdb_exception_error &ex) |
8020350c DB |
9931 | { |
9932 | if (ex.error == TARGET_CLOSE_ERROR) | |
9933 | { | |
9934 | /* If we got an (EOF) error that caused the target | |
9935 | to go away, then we're done, that's what we wanted. | |
9936 | "k" is susceptible to cause a premature EOF, given | |
9937 | that the remote server isn't actually required to | |
9938 | reply to "k", and it can happen that it doesn't | |
9939 | even get to reply ACK to the "k". */ | |
9940 | return; | |
9941 | } | |
82f73884 | 9942 | |
8020350c DB |
9943 | /* Otherwise, something went wrong. We didn't actually kill |
9944 | the target. Just propagate the exception, and let the | |
9945 | user or higher layers decide what to do. */ | |
eedc3f4f | 9946 | throw; |
8020350c | 9947 | } |
82f73884 PA |
9948 | } |
9949 | ||
f6ac5f3d PA |
9950 | void |
9951 | remote_target::mourn_inferior () | |
c906108c | 9952 | { |
8020350c | 9953 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9954 | |
9607784a PA |
9955 | /* We're no longer interested in notification events of an inferior |
9956 | that exited or was killed/detached. */ | |
9957 | discard_pending_stop_replies (current_inferior ()); | |
9958 | ||
8020350c | 9959 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 9960 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 9961 | { |
5b6d1e4f | 9962 | remote_unpush_target (this); |
8020350c DB |
9963 | return; |
9964 | } | |
c906108c | 9965 | |
e24a49d8 PA |
9966 | /* In case we got here due to an error, but we're going to stay |
9967 | connected. */ | |
9968 | rs->waiting_for_stop_reply = 0; | |
9969 | ||
dc1981d7 PA |
9970 | /* If the current general thread belonged to the process we just |
9971 | detached from or has exited, the remote side current general | |
9972 | thread becomes undefined. Considering a case like this: | |
9973 | ||
9974 | - We just got here due to a detach. | |
9975 | - The process that we're detaching from happens to immediately | |
9976 | report a global breakpoint being hit in non-stop mode, in the | |
9977 | same thread we had selected before. | |
9978 | - GDB attaches to this process again. | |
9979 | - This event happens to be the next event we handle. | |
9980 | ||
9981 | GDB would consider that the current general thread didn't need to | |
9982 | be set on the stub side (with Hg), since for all it knew, | |
9983 | GENERAL_THREAD hadn't changed. | |
9984 | ||
9985 | Notice that although in all-stop mode, the remote server always | |
9986 | sets the current thread to the thread reporting the stop event, | |
9987 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9988 | not* change the current thread when reporting a breakpoint hit, | |
9989 | due to the decoupling of event reporting and event handling. | |
9990 | ||
9991 | To keep things simple, we always invalidate our notion of the | |
9992 | current thread. */ | |
47f8a51d | 9993 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9994 | |
8020350c | 9995 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 9996 | generic_mourn_inferior (); |
2d717e4f | 9997 | } |
c906108c | 9998 | |
57810aa7 | 9999 | bool |
f6ac5f3d | 10000 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10001 | { |
4082afcc | 10002 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
10003 | } |
10004 | ||
6b8edb51 PA |
10005 | void |
10006 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10007 | { |
10008 | struct remote_state *rs = get_remote_state (); | |
10009 | char *reply; | |
10010 | ||
8d64371b TT |
10011 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10012 | "QDisableRandomization:%x", val); | |
03583c20 | 10013 | putpkt (rs->buf); |
b6bb3468 | 10014 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10015 | if (*reply == '\0') |
10016 | error (_("Target does not support QDisableRandomization.")); | |
10017 | if (strcmp (reply, "OK") != 0) | |
10018 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10019 | } | |
10020 | ||
6b8edb51 PA |
10021 | int |
10022 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10023 | { |
10024 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10025 | int len; |
94585166 | 10026 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10027 | |
2d717e4f DJ |
10028 | /* If the user has disabled vRun support, or we have detected that |
10029 | support is not available, do not try it. */ | |
4082afcc | 10030 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10031 | return -1; |
424163ea | 10032 | |
8d64371b TT |
10033 | strcpy (rs->buf.data (), "vRun;"); |
10034 | len = strlen (rs->buf.data ()); | |
c906108c | 10035 | |
2d717e4f DJ |
10036 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10037 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10038 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10039 | strlen (remote_exec_file)); |
2d717e4f | 10040 | |
7c5ded6a | 10041 | if (!args.empty ()) |
2d717e4f | 10042 | { |
2d717e4f | 10043 | int i; |
2d717e4f | 10044 | |
773a1edc | 10045 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10046 | for (i = 0; argv[i] != NULL; i++) |
10047 | { | |
10048 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10049 | error (_("Argument list too long for run packet")); | |
10050 | rs->buf[len++] = ';'; | |
8d64371b | 10051 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10052 | strlen (argv[i])); |
2d717e4f | 10053 | } |
2d717e4f DJ |
10054 | } |
10055 | ||
10056 | rs->buf[len++] = '\0'; | |
10057 | ||
10058 | putpkt (rs->buf); | |
8d64371b | 10059 | getpkt (&rs->buf, 0); |
2d717e4f | 10060 | |
4082afcc | 10061 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 10062 | { |
4082afcc | 10063 | case PACKET_OK: |
3405876a | 10064 | /* We have a wait response. All is well. */ |
2d717e4f | 10065 | return 0; |
4082afcc PA |
10066 | case PACKET_UNKNOWN: |
10067 | return -1; | |
10068 | case PACKET_ERROR: | |
2d717e4f DJ |
10069 | if (remote_exec_file[0] == '\0') |
10070 | error (_("Running the default executable on the remote target failed; " | |
10071 | "try \"set remote exec-file\"?")); | |
10072 | else | |
10073 | error (_("Running \"%s\" on the remote target failed"), | |
10074 | remote_exec_file); | |
4082afcc PA |
10075 | default: |
10076 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 10077 | } |
c906108c SS |
10078 | } |
10079 | ||
0a2dde4a SDJ |
10080 | /* Helper function to send set/unset environment packets. ACTION is |
10081 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10082 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10083 | sent. */ | |
10084 | ||
6b8edb51 PA |
10085 | void |
10086 | remote_target::send_environment_packet (const char *action, | |
10087 | const char *packet, | |
10088 | const char *value) | |
0a2dde4a | 10089 | { |
6b8edb51 PA |
10090 | remote_state *rs = get_remote_state (); |
10091 | ||
0a2dde4a SDJ |
10092 | /* Convert the environment variable to an hex string, which |
10093 | is the best format to be transmitted over the wire. */ | |
10094 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10095 | strlen (value)); | |
10096 | ||
8d64371b | 10097 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10098 | "%s:%s", packet, encoded_value.c_str ()); |
10099 | ||
10100 | putpkt (rs->buf); | |
8d64371b TT |
10101 | getpkt (&rs->buf, 0); |
10102 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10103 | warning (_("Unable to %s environment variable '%s' on remote."), |
10104 | action, value); | |
10105 | } | |
10106 | ||
10107 | /* Helper function to handle the QEnvironment* packets. */ | |
10108 | ||
6b8edb51 PA |
10109 | void |
10110 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10111 | { |
6b8edb51 PA |
10112 | remote_state *rs = get_remote_state (); |
10113 | ||
0a2dde4a SDJ |
10114 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10115 | { | |
10116 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10117 | getpkt (&rs->buf, 0); |
10118 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10119 | warning (_("Unable to reset environment on remote.")); |
10120 | } | |
10121 | ||
10122 | gdb_environ *e = ¤t_inferior ()->environment; | |
10123 | ||
10124 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10125 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10126 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10127 | el.c_str ()); |
10128 | ||
10129 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10130 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10131 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10132 | } |
10133 | ||
bc3b087d SDJ |
10134 | /* Helper function to set the current working directory for the |
10135 | inferior in the remote target. */ | |
10136 | ||
6b8edb51 PA |
10137 | void |
10138 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10139 | { |
10140 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10141 | { | |
10142 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10143 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10144 | |
10145 | if (inferior_cwd != NULL) | |
10146 | { | |
10147 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10148 | strlen (inferior_cwd)); | |
10149 | ||
8d64371b | 10150 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10151 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10152 | } | |
10153 | else | |
10154 | { | |
10155 | /* An empty inferior_cwd means that the user wants us to | |
10156 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10157 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10158 | "QSetWorkingDir:"); |
10159 | } | |
10160 | ||
10161 | putpkt (rs->buf); | |
8d64371b | 10162 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10163 | if (packet_ok (rs->buf, |
10164 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10165 | != PACKET_OK) | |
10166 | error (_("\ | |
10167 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10168 | directory: %s"), | |
8d64371b | 10169 | rs->buf.data ()); |
bc3b087d SDJ |
10170 | |
10171 | } | |
10172 | } | |
10173 | ||
2d717e4f DJ |
10174 | /* In the extended protocol we want to be able to do things like |
10175 | "run" and have them basically work as expected. So we need | |
10176 | a special create_inferior function. We support changing the | |
10177 | executable file and the command line arguments, but not the | |
10178 | environment. */ | |
10179 | ||
f6ac5f3d PA |
10180 | void |
10181 | extended_remote_target::create_inferior (const char *exec_file, | |
10182 | const std::string &args, | |
10183 | char **env, int from_tty) | |
43ff13b4 | 10184 | { |
3405876a PA |
10185 | int run_worked; |
10186 | char *stop_reply; | |
10187 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10188 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10189 | |
43ff13b4 | 10190 | /* If running asynchronously, register the target file descriptor |
23860348 | 10191 | with the event loop. */ |
75c99385 | 10192 | if (target_can_async_p ()) |
6a3753b3 | 10193 | target_async (1); |
43ff13b4 | 10194 | |
03583c20 | 10195 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10196 | if (supports_disable_randomization ()) |
03583c20 UW |
10197 | extended_remote_disable_randomization (disable_randomization); |
10198 | ||
aefd8b33 SDJ |
10199 | /* If startup-with-shell is on, we inform gdbserver to start the |
10200 | remote inferior using a shell. */ | |
10201 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10202 | { | |
8d64371b | 10203 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10204 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10205 | putpkt (rs->buf); | |
8d64371b TT |
10206 | getpkt (&rs->buf, 0); |
10207 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10208 | error (_("\ |
10209 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10210 | rs->buf.data ()); |
aefd8b33 SDJ |
10211 | } |
10212 | ||
6b8edb51 | 10213 | extended_remote_environment_support (); |
0a2dde4a | 10214 | |
6b8edb51 | 10215 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10216 | |
43ff13b4 | 10217 | /* Now restart the remote server. */ |
3405876a PA |
10218 | run_worked = extended_remote_run (args) != -1; |
10219 | if (!run_worked) | |
2d717e4f DJ |
10220 | { |
10221 | /* vRun was not supported. Fail if we need it to do what the | |
10222 | user requested. */ | |
10223 | if (remote_exec_file[0]) | |
10224 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10225 | if (!args.empty ()) |
65e65158 | 10226 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10227 | |
2d717e4f DJ |
10228 | /* Fall back to "R". */ |
10229 | extended_remote_restart (); | |
10230 | } | |
424163ea | 10231 | |
3405876a | 10232 | /* vRun's success return is a stop reply. */ |
8d64371b | 10233 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10234 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10235 | |
2d717e4f DJ |
10236 | /* Get updated offsets, if the stub uses qOffsets. */ |
10237 | get_offsets (); | |
2d717e4f | 10238 | } |
c906108c | 10239 | \f |
c5aa993b | 10240 | |
b775012e LM |
10241 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10242 | the list of conditions (in agent expression bytecode format), if any, the | |
10243 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10244 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10245 | |
10246 | static int | |
10247 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10248 | struct bp_target_info *bp_tgt, char *buf, |
10249 | char *buf_end) | |
b775012e | 10250 | { |
3cde5c42 | 10251 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10252 | return 0; |
10253 | ||
10254 | buf += strlen (buf); | |
bba74b36 | 10255 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10256 | buf++; |
10257 | ||
83621223 | 10258 | /* Send conditions to the target. */ |
d538e36d | 10259 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10260 | { |
bba74b36 | 10261 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10262 | buf += strlen (buf); |
3cde5c42 | 10263 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10264 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10265 | *buf = '\0'; | |
10266 | } | |
b775012e LM |
10267 | return 0; |
10268 | } | |
10269 | ||
d3ce09f5 SS |
10270 | static void |
10271 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10272 | struct bp_target_info *bp_tgt, char *buf) | |
10273 | { | |
3cde5c42 | 10274 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10275 | return; |
10276 | ||
10277 | buf += strlen (buf); | |
10278 | ||
10279 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10280 | buf += strlen (buf); | |
10281 | ||
10282 | /* Concatenate all the agent expressions that are commands into the | |
10283 | cmds parameter. */ | |
df97be55 | 10284 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10285 | { |
10286 | sprintf (buf, "X%x,", aexpr->len); | |
10287 | buf += strlen (buf); | |
3cde5c42 | 10288 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10289 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10290 | *buf = '\0'; | |
10291 | } | |
d3ce09f5 SS |
10292 | } |
10293 | ||
8181d85f DJ |
10294 | /* Insert a breakpoint. On targets that have software breakpoint |
10295 | support, we ask the remote target to do the work; on targets | |
10296 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10297 | |
f6ac5f3d PA |
10298 | int |
10299 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10300 | struct bp_target_info *bp_tgt) | |
c906108c | 10301 | { |
d471ea57 AC |
10302 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10303 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10304 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10305 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10306 | |
4082afcc | 10307 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10308 | { |
0d5ed153 | 10309 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10310 | struct remote_state *rs; |
bba74b36 | 10311 | char *p, *endbuf; |
4fff2411 | 10312 | |
28439a30 PA |
10313 | /* Make sure the remote is pointing at the right process, if |
10314 | necessary. */ | |
10315 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10316 | set_general_process (); | |
10317 | ||
4fff2411 | 10318 | rs = get_remote_state (); |
8d64371b TT |
10319 | p = rs->buf.data (); |
10320 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10321 | |
96baa820 JM |
10322 | *(p++) = 'Z'; |
10323 | *(p++) = '0'; | |
10324 | *(p++) = ','; | |
7c0f6dcc | 10325 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10326 | p += hexnumstr (p, addr); |
579c6ad9 | 10327 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10328 | |
f6ac5f3d | 10329 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10330 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10331 | |
f6ac5f3d | 10332 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10333 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10334 | ||
6d820c5c | 10335 | putpkt (rs->buf); |
8d64371b | 10336 | getpkt (&rs->buf, 0); |
96baa820 | 10337 | |
6d820c5c | 10338 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10339 | { |
d471ea57 AC |
10340 | case PACKET_ERROR: |
10341 | return -1; | |
10342 | case PACKET_OK: | |
10343 | return 0; | |
10344 | case PACKET_UNKNOWN: | |
10345 | break; | |
96baa820 JM |
10346 | } |
10347 | } | |
c906108c | 10348 | |
0000e5cc PA |
10349 | /* If this breakpoint has target-side commands but this stub doesn't |
10350 | support Z0 packets, throw error. */ | |
3cde5c42 | 10351 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10352 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10353 | Target doesn't support breakpoints that have target side commands.")); | |
10354 | ||
f6ac5f3d | 10355 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10356 | } |
10357 | ||
f6ac5f3d PA |
10358 | int |
10359 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10360 | struct bp_target_info *bp_tgt, | |
10361 | enum remove_bp_reason reason) | |
c906108c | 10362 | { |
8181d85f | 10363 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10364 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10365 | |
4082afcc | 10366 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10367 | { |
8d64371b TT |
10368 | char *p = rs->buf.data (); |
10369 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10370 | |
28439a30 PA |
10371 | /* Make sure the remote is pointing at the right process, if |
10372 | necessary. */ | |
10373 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10374 | set_general_process (); | |
10375 | ||
96baa820 JM |
10376 | *(p++) = 'z'; |
10377 | *(p++) = '0'; | |
10378 | *(p++) = ','; | |
10379 | ||
8181d85f DJ |
10380 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10381 | p += hexnumstr (p, addr); | |
579c6ad9 | 10382 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10383 | |
6d820c5c | 10384 | putpkt (rs->buf); |
8d64371b | 10385 | getpkt (&rs->buf, 0); |
96baa820 | 10386 | |
6d820c5c | 10387 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10388 | } |
10389 | ||
f6ac5f3d | 10390 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10391 | } |
10392 | ||
f486487f | 10393 | static enum Z_packet_type |
d471ea57 AC |
10394 | watchpoint_to_Z_packet (int type) |
10395 | { | |
10396 | switch (type) | |
10397 | { | |
10398 | case hw_write: | |
bb858e6a | 10399 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10400 | break; |
10401 | case hw_read: | |
bb858e6a | 10402 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10403 | break; |
10404 | case hw_access: | |
bb858e6a | 10405 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10406 | break; |
10407 | default: | |
8e65ff28 | 10408 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10409 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10410 | } |
10411 | } | |
10412 | ||
f6ac5f3d PA |
10413 | int |
10414 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10415 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10416 | { |
d01949b6 | 10417 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10418 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10419 | char *p; |
d471ea57 | 10420 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10421 | |
4082afcc | 10422 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10423 | return 1; |
802188a7 | 10424 | |
28439a30 PA |
10425 | /* Make sure the remote is pointing at the right process, if |
10426 | necessary. */ | |
10427 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10428 | set_general_process (); | |
10429 | ||
8d64371b TT |
10430 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10431 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10432 | addr = remote_address_masked (addr); |
10433 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10434 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10435 | |
6d820c5c | 10436 | putpkt (rs->buf); |
8d64371b | 10437 | getpkt (&rs->buf, 0); |
96baa820 | 10438 | |
6d820c5c | 10439 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10440 | { |
10441 | case PACKET_ERROR: | |
d471ea57 | 10442 | return -1; |
85d721b8 PA |
10443 | case PACKET_UNKNOWN: |
10444 | return 1; | |
d471ea57 AC |
10445 | case PACKET_OK: |
10446 | return 0; | |
10447 | } | |
8e65ff28 | 10448 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10449 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10450 | } |
10451 | ||
57810aa7 | 10452 | bool |
f6ac5f3d PA |
10453 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10454 | CORE_ADDR start, int length) | |
283002cf MR |
10455 | { |
10456 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10457 | ||
10458 | return diff < length; | |
10459 | } | |
10460 | ||
d471ea57 | 10461 | |
f6ac5f3d PA |
10462 | int |
10463 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10464 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10465 | { |
d01949b6 | 10466 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10467 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10468 | char *p; |
d471ea57 AC |
10469 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10470 | ||
4082afcc | 10471 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10472 | return -1; |
802188a7 | 10473 | |
28439a30 PA |
10474 | /* Make sure the remote is pointing at the right process, if |
10475 | necessary. */ | |
10476 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10477 | set_general_process (); | |
10478 | ||
8d64371b TT |
10479 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10480 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10481 | addr = remote_address_masked (addr); |
10482 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10483 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10484 | putpkt (rs->buf); |
8d64371b | 10485 | getpkt (&rs->buf, 0); |
96baa820 | 10486 | |
6d820c5c | 10487 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10488 | { |
10489 | case PACKET_ERROR: | |
10490 | case PACKET_UNKNOWN: | |
10491 | return -1; | |
10492 | case PACKET_OK: | |
10493 | return 0; | |
10494 | } | |
8e65ff28 | 10495 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10496 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10497 | } |
10498 | ||
3c3bea1c | 10499 | |
60fcc1c3 TT |
10500 | static int remote_hw_watchpoint_limit = -1; |
10501 | static int remote_hw_watchpoint_length_limit = -1; | |
10502 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10503 | |
f6ac5f3d PA |
10504 | int |
10505 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10506 | { |
10507 | if (remote_hw_watchpoint_length_limit == 0) | |
10508 | return 0; | |
10509 | else if (remote_hw_watchpoint_length_limit < 0) | |
10510 | return 1; | |
10511 | else if (len <= remote_hw_watchpoint_length_limit) | |
10512 | return 1; | |
10513 | else | |
10514 | return 0; | |
10515 | } | |
10516 | ||
f6ac5f3d PA |
10517 | int |
10518 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10519 | { |
3c3bea1c GS |
10520 | if (type == bp_hardware_breakpoint) |
10521 | { | |
10522 | if (remote_hw_breakpoint_limit == 0) | |
10523 | return 0; | |
501eef12 AC |
10524 | else if (remote_hw_breakpoint_limit < 0) |
10525 | return 1; | |
3c3bea1c GS |
10526 | else if (cnt <= remote_hw_breakpoint_limit) |
10527 | return 1; | |
10528 | } | |
10529 | else | |
10530 | { | |
10531 | if (remote_hw_watchpoint_limit == 0) | |
10532 | return 0; | |
501eef12 AC |
10533 | else if (remote_hw_watchpoint_limit < 0) |
10534 | return 1; | |
3c3bea1c GS |
10535 | else if (ot) |
10536 | return -1; | |
10537 | else if (cnt <= remote_hw_watchpoint_limit) | |
10538 | return 1; | |
10539 | } | |
10540 | return -1; | |
10541 | } | |
10542 | ||
f7e6eed5 PA |
10543 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10544 | ||
57810aa7 | 10545 | bool |
f6ac5f3d | 10546 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10547 | { |
799a2abe | 10548 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10549 | |
799a2abe | 10550 | return (thread->priv != NULL |
7aabaf9d SM |
10551 | && (get_remote_thread_info (thread)->stop_reason |
10552 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10553 | } |
10554 | ||
10555 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10556 | remote. */ | |
10557 | ||
57810aa7 | 10558 | bool |
f6ac5f3d | 10559 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10560 | { |
f7e6eed5 PA |
10561 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10562 | } | |
10563 | ||
10564 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10565 | ||
57810aa7 | 10566 | bool |
f6ac5f3d | 10567 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10568 | { |
799a2abe | 10569 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10570 | |
799a2abe | 10571 | return (thread->priv != NULL |
7aabaf9d SM |
10572 | && (get_remote_thread_info (thread)->stop_reason |
10573 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10574 | } |
10575 | ||
10576 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10577 | remote. */ | |
10578 | ||
57810aa7 | 10579 | bool |
f6ac5f3d | 10580 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10581 | { |
f7e6eed5 PA |
10582 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10583 | } | |
10584 | ||
57810aa7 | 10585 | bool |
f6ac5f3d | 10586 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10587 | { |
799a2abe | 10588 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10589 | |
799a2abe | 10590 | return (thread->priv != NULL |
7aabaf9d SM |
10591 | && (get_remote_thread_info (thread)->stop_reason |
10592 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10593 | } |
10594 | ||
57810aa7 | 10595 | bool |
f6ac5f3d | 10596 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10597 | { |
799a2abe | 10598 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10599 | |
799a2abe | 10600 | if (thread->priv != NULL |
7aabaf9d SM |
10601 | && (get_remote_thread_info (thread)->stop_reason |
10602 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10603 | { |
7aabaf9d | 10604 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10605 | return true; |
4aa7a7f5 JJ |
10606 | } |
10607 | ||
57810aa7 | 10608 | return false; |
3c3bea1c GS |
10609 | } |
10610 | ||
10611 | ||
f6ac5f3d PA |
10612 | int |
10613 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10614 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10615 | { |
0d5ed153 | 10616 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10617 | struct remote_state *rs; |
bba74b36 | 10618 | char *p, *endbuf; |
dd61ec5c | 10619 | char *message; |
3c3bea1c | 10620 | |
4082afcc | 10621 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10622 | return -1; |
2bc416ba | 10623 | |
28439a30 PA |
10624 | /* Make sure the remote is pointing at the right process, if |
10625 | necessary. */ | |
10626 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10627 | set_general_process (); | |
10628 | ||
4fff2411 | 10629 | rs = get_remote_state (); |
8d64371b TT |
10630 | p = rs->buf.data (); |
10631 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10632 | |
96baa820 JM |
10633 | *(p++) = 'Z'; |
10634 | *(p++) = '1'; | |
10635 | *(p++) = ','; | |
802188a7 | 10636 | |
0d5ed153 | 10637 | addr = remote_address_masked (addr); |
96baa820 | 10638 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10639 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10640 | |
f6ac5f3d | 10641 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10642 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10643 | |
f6ac5f3d | 10644 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10645 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10646 | ||
6d820c5c | 10647 | putpkt (rs->buf); |
8d64371b | 10648 | getpkt (&rs->buf, 0); |
96baa820 | 10649 | |
6d820c5c | 10650 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10651 | { |
10652 | case PACKET_ERROR: | |
dd61ec5c | 10653 | if (rs->buf[1] == '.') |
dda83cd7 SM |
10654 | { |
10655 | message = strchr (&rs->buf[2], '.'); | |
10656 | if (message) | |
10657 | error (_("Remote failure reply: %s"), message + 1); | |
10658 | } | |
dd61ec5c | 10659 | return -1; |
d471ea57 AC |
10660 | case PACKET_UNKNOWN: |
10661 | return -1; | |
10662 | case PACKET_OK: | |
10663 | return 0; | |
10664 | } | |
8e65ff28 | 10665 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10666 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10667 | } |
10668 | ||
d471ea57 | 10669 | |
f6ac5f3d PA |
10670 | int |
10671 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10672 | struct bp_target_info *bp_tgt) | |
96baa820 | 10673 | { |
8181d85f | 10674 | CORE_ADDR addr; |
d01949b6 | 10675 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10676 | char *p = rs->buf.data (); |
10677 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10678 | |
4082afcc | 10679 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10680 | return -1; |
802188a7 | 10681 | |
28439a30 PA |
10682 | /* Make sure the remote is pointing at the right process, if |
10683 | necessary. */ | |
10684 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10685 | set_general_process (); | |
10686 | ||
96baa820 JM |
10687 | *(p++) = 'z'; |
10688 | *(p++) = '1'; | |
10689 | *(p++) = ','; | |
802188a7 | 10690 | |
8181d85f | 10691 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10692 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10693 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10694 | |
6d820c5c | 10695 | putpkt (rs->buf); |
8d64371b | 10696 | getpkt (&rs->buf, 0); |
802188a7 | 10697 | |
6d820c5c | 10698 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10699 | { |
10700 | case PACKET_ERROR: | |
10701 | case PACKET_UNKNOWN: | |
10702 | return -1; | |
10703 | case PACKET_OK: | |
10704 | return 0; | |
10705 | } | |
8e65ff28 | 10706 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10707 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10708 | } |
96baa820 | 10709 | |
4a5e7a5b PA |
10710 | /* Verify memory using the "qCRC:" request. */ |
10711 | ||
f6ac5f3d PA |
10712 | int |
10713 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10714 | { |
10715 | struct remote_state *rs = get_remote_state (); | |
10716 | unsigned long host_crc, target_crc; | |
10717 | char *tmp; | |
10718 | ||
936d2992 PA |
10719 | /* It doesn't make sense to use qCRC if the remote target is |
10720 | connected but not running. */ | |
55f6301a TT |
10721 | if (target_has_execution () |
10722 | && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
936d2992 PA |
10723 | { |
10724 | enum packet_result result; | |
28439a30 | 10725 | |
936d2992 PA |
10726 | /* Make sure the remote is pointing at the right process. */ |
10727 | set_general_process (); | |
4a5e7a5b | 10728 | |
936d2992 | 10729 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10730 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10731 | (long) lma, (long) size); |
10732 | putpkt (rs->buf); | |
4a5e7a5b | 10733 | |
936d2992 PA |
10734 | /* Be clever; compute the host_crc before waiting for target |
10735 | reply. */ | |
10736 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10737 | ||
8d64371b | 10738 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10739 | |
936d2992 PA |
10740 | result = packet_ok (rs->buf, |
10741 | &remote_protocol_packets[PACKET_qCRC]); | |
10742 | if (result == PACKET_ERROR) | |
10743 | return -1; | |
10744 | else if (result == PACKET_OK) | |
10745 | { | |
10746 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10747 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10748 | |
936d2992 PA |
10749 | return (host_crc == target_crc); |
10750 | } | |
10751 | } | |
4a5e7a5b | 10752 | |
f6ac5f3d | 10753 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10754 | } |
10755 | ||
c906108c SS |
10756 | /* compare-sections command |
10757 | ||
10758 | With no arguments, compares each loadable section in the exec bfd | |
10759 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10760 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10761 | |
c906108c | 10762 | static void |
ac88e2de | 10763 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10764 | { |
10765 | asection *s; | |
ce359b09 | 10766 | const char *sectname; |
c906108c SS |
10767 | bfd_size_type size; |
10768 | bfd_vma lma; | |
10769 | int matched = 0; | |
10770 | int mismatched = 0; | |
4a5e7a5b | 10771 | int res; |
95cf3b38 | 10772 | int read_only = 0; |
c906108c | 10773 | |
7e10abd1 | 10774 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 10775 | error (_("command cannot be used without an exec file")); |
c906108c | 10776 | |
95cf3b38 DT |
10777 | if (args != NULL && strcmp (args, "-r") == 0) |
10778 | { | |
10779 | read_only = 1; | |
10780 | args = NULL; | |
10781 | } | |
10782 | ||
7e10abd1 | 10783 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
10784 | { |
10785 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10786 | continue; /* Skip non-loadable section. */ |
c906108c | 10787 | |
95cf3b38 DT |
10788 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10789 | continue; /* Skip writeable sections */ | |
10790 | ||
fd361982 | 10791 | size = bfd_section_size (s); |
c906108c | 10792 | if (size == 0) |
0df8b418 | 10793 | continue; /* Skip zero-length section. */ |
c906108c | 10794 | |
fd361982 | 10795 | sectname = bfd_section_name (s); |
c906108c | 10796 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10797 | continue; /* Not the section selected by user. */ |
c906108c | 10798 | |
0df8b418 | 10799 | matched = 1; /* Do this section. */ |
c906108c | 10800 | lma = s->lma; |
c906108c | 10801 | |
b80406ac | 10802 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
10803 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
10804 | sectdata.data (), 0, size); | |
c906108c | 10805 | |
b80406ac | 10806 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10807 | |
10808 | if (res == -1) | |
5af949e3 | 10809 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10810 | paddress (target_gdbarch (), lma), |
10811 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10812 | |
5af949e3 | 10813 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10814 | paddress (target_gdbarch (), lma), |
10815 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10816 | if (res) |
c906108c SS |
10817 | printf_filtered ("matched.\n"); |
10818 | else | |
c5aa993b JM |
10819 | { |
10820 | printf_filtered ("MIS-MATCHED!\n"); | |
10821 | mismatched++; | |
10822 | } | |
c906108c SS |
10823 | } |
10824 | if (mismatched > 0) | |
936d2992 | 10825 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10826 | the loaded file\n")); |
c906108c | 10827 | if (args && !matched) |
a3f17187 | 10828 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10829 | } |
10830 | ||
0e7f50da UW |
10831 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10832 | into remote target. The number of bytes written to the remote | |
10833 | target is returned, or -1 for error. */ | |
10834 | ||
6b8edb51 PA |
10835 | target_xfer_status |
10836 | remote_target::remote_write_qxfer (const char *object_name, | |
10837 | const char *annex, const gdb_byte *writebuf, | |
10838 | ULONGEST offset, LONGEST len, | |
10839 | ULONGEST *xfered_len, | |
10840 | struct packet_config *packet) | |
0e7f50da UW |
10841 | { |
10842 | int i, buf_len; | |
10843 | ULONGEST n; | |
0e7f50da UW |
10844 | struct remote_state *rs = get_remote_state (); |
10845 | int max_size = get_memory_write_packet_size (); | |
10846 | ||
7cc244de | 10847 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10848 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10849 | |
10850 | /* Insert header. */ | |
8d64371b | 10851 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
10852 | "qXfer:%s:write:%s:%s:", |
10853 | object_name, annex ? annex : "", | |
10854 | phex_nz (offset, sizeof offset)); | |
10855 | max_size -= (i + 1); | |
10856 | ||
10857 | /* Escape as much data as fits into rs->buf. */ | |
10858 | buf_len = remote_escape_output | |
8d64371b | 10859 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 10860 | |
8d64371b TT |
10861 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
10862 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 10863 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10864 | return TARGET_XFER_E_IO; |
0e7f50da | 10865 | |
8d64371b | 10866 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
10867 | |
10868 | *xfered_len = n; | |
92ffd475 | 10869 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10870 | } |
10871 | ||
0876f84a DJ |
10872 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10873 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10874 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10875 | The number of bytes read may be less than LEN without indicating an | |
10876 | EOF. PACKET is checked and updated to indicate whether the remote | |
10877 | target supports this object. */ | |
10878 | ||
6b8edb51 PA |
10879 | target_xfer_status |
10880 | remote_target::remote_read_qxfer (const char *object_name, | |
10881 | const char *annex, | |
10882 | gdb_byte *readbuf, ULONGEST offset, | |
10883 | LONGEST len, | |
10884 | ULONGEST *xfered_len, | |
10885 | struct packet_config *packet) | |
0876f84a | 10886 | { |
0876f84a | 10887 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10888 | LONGEST i, n, packet_len; |
10889 | ||
7cc244de | 10890 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10891 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10892 | |
10893 | /* Check whether we've cached an end-of-object packet that matches | |
10894 | this request. */ | |
8e88304f | 10895 | if (rs->finished_object) |
0876f84a | 10896 | { |
8e88304f TT |
10897 | if (strcmp (object_name, rs->finished_object) == 0 |
10898 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10899 | && offset == rs->finished_offset) | |
9b409511 YQ |
10900 | return TARGET_XFER_EOF; |
10901 | ||
0876f84a DJ |
10902 | |
10903 | /* Otherwise, we're now reading something different. Discard | |
10904 | the cache. */ | |
8e88304f TT |
10905 | xfree (rs->finished_object); |
10906 | xfree (rs->finished_annex); | |
10907 | rs->finished_object = NULL; | |
10908 | rs->finished_annex = NULL; | |
0876f84a DJ |
10909 | } |
10910 | ||
10911 | /* Request only enough to fit in a single packet. The actual data | |
10912 | may not, since we don't know how much of it will need to be escaped; | |
10913 | the target is free to respond with slightly less data. We subtract | |
10914 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10915 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
10916 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
10917 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
10918 | object_name, annex ? annex : "", |
10919 | phex_nz (offset, sizeof offset), | |
10920 | phex_nz (n, sizeof n)); | |
10921 | i = putpkt (rs->buf); | |
10922 | if (i < 0) | |
2ed4b548 | 10923 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10924 | |
10925 | rs->buf[0] = '\0'; | |
8d64371b | 10926 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 10927 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10928 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10929 | |
10930 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 10931 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
10932 | |
10933 | /* 'm' means there is (or at least might be) more data after this | |
10934 | batch. That does not make sense unless there's at least one byte | |
10935 | of data in this reply. */ | |
10936 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10937 | error (_("Remote qXfer reply contained no data.")); | |
10938 | ||
10939 | /* Got some data. */ | |
8d64371b | 10940 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 10941 | packet_len - 1, readbuf, n); |
0876f84a DJ |
10942 | |
10943 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10944 | or possibly empty. If we have the final block of a non-empty |
10945 | object, record this fact to bypass a subsequent partial read. */ | |
10946 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10947 | { |
8e88304f TT |
10948 | rs->finished_object = xstrdup (object_name); |
10949 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10950 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10951 | } |
10952 | ||
9b409511 YQ |
10953 | if (i == 0) |
10954 | return TARGET_XFER_EOF; | |
10955 | else | |
10956 | { | |
10957 | *xfered_len = i; | |
10958 | return TARGET_XFER_OK; | |
10959 | } | |
0876f84a DJ |
10960 | } |
10961 | ||
f6ac5f3d PA |
10962 | enum target_xfer_status |
10963 | remote_target::xfer_partial (enum target_object object, | |
10964 | const char *annex, gdb_byte *readbuf, | |
10965 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10966 | ULONGEST *xfered_len) | |
c906108c | 10967 | { |
82f73884 | 10968 | struct remote_state *rs; |
c906108c | 10969 | int i; |
6d820c5c | 10970 | char *p2; |
1e3ff5ad | 10971 | char query_type; |
124e13d9 | 10972 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10973 | |
e6e4e701 | 10974 | set_remote_traceframe (); |
82f73884 PA |
10975 | set_general_thread (inferior_ptid); |
10976 | ||
10977 | rs = get_remote_state (); | |
10978 | ||
b2182ed2 | 10979 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10980 | if (object == TARGET_OBJECT_MEMORY) |
10981 | { | |
2d717e4f DJ |
10982 | /* If the remote target is connected but not running, we should |
10983 | pass this request down to a lower stratum (e.g. the executable | |
10984 | file). */ | |
55f6301a | 10985 | if (!target_has_execution ()) |
9b409511 | 10986 | return TARGET_XFER_EOF; |
2d717e4f | 10987 | |
21e3b9b9 | 10988 | if (writebuf != NULL) |
124e13d9 SM |
10989 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10990 | xfered_len); | |
21e3b9b9 | 10991 | else |
6b8edb51 | 10992 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 10993 | xfered_len); |
21e3b9b9 DJ |
10994 | } |
10995 | ||
4aa995e1 PA |
10996 | /* Handle extra signal info using qxfer packets. */ |
10997 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10998 | { | |
10999 | if (readbuf) | |
f6ac5f3d | 11000 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 11001 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
11002 | [PACKET_qXfer_siginfo_read]); |
11003 | else | |
f6ac5f3d | 11004 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 11005 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
11006 | &remote_protocol_packets |
11007 | [PACKET_qXfer_siginfo_write]); | |
11008 | } | |
11009 | ||
0fb4aa4b PA |
11010 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11011 | { | |
11012 | if (readbuf) | |
f6ac5f3d | 11013 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11014 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
11015 | &remote_protocol_packets |
11016 | [PACKET_qXfer_statictrace_read]); | |
11017 | else | |
2ed4b548 | 11018 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11019 | } |
11020 | ||
a76d924d DJ |
11021 | /* Only handle flash writes. */ |
11022 | if (writebuf != NULL) | |
11023 | { | |
a76d924d DJ |
11024 | switch (object) |
11025 | { | |
11026 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11027 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11028 | writebuf); |
a76d924d DJ |
11029 | |
11030 | default: | |
2ed4b548 | 11031 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11032 | } |
11033 | } | |
4b8a223f | 11034 | |
1e3ff5ad AC |
11035 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11036 | objects!!! Instead specify new query packets. */ | |
11037 | switch (object) | |
c906108c | 11038 | { |
1e3ff5ad AC |
11039 | case TARGET_OBJECT_AVR: |
11040 | query_type = 'R'; | |
11041 | break; | |
802188a7 RM |
11042 | |
11043 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11044 | gdb_assert (annex == NULL); |
f6ac5f3d | 11045 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 11046 | xfered_len, |
0876f84a | 11047 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 11048 | |
23181151 DJ |
11049 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11050 | return remote_read_qxfer | |
f6ac5f3d | 11051 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
11052 | &remote_protocol_packets[PACKET_qXfer_features]); |
11053 | ||
cfa9d6d9 DJ |
11054 | case TARGET_OBJECT_LIBRARIES: |
11055 | return remote_read_qxfer | |
f6ac5f3d | 11056 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
11057 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
11058 | ||
2268b414 JK |
11059 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11060 | return remote_read_qxfer | |
f6ac5f3d | 11061 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
11062 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
11063 | ||
fd79ecee DJ |
11064 | case TARGET_OBJECT_MEMORY_MAP: |
11065 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11066 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 11067 | xfered_len, |
fd79ecee DJ |
11068 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
11069 | ||
07e059b5 VP |
11070 | case TARGET_OBJECT_OSDATA: |
11071 | /* Should only get here if we're connected. */ | |
5d93a237 | 11072 | gdb_assert (rs->remote_desc); |
07e059b5 | 11073 | return remote_read_qxfer |
f6ac5f3d | 11074 | ("osdata", annex, readbuf, offset, len, xfered_len, |
dda83cd7 | 11075 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
07e059b5 | 11076 | |
dc146f7c VP |
11077 | case TARGET_OBJECT_THREADS: |
11078 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11079 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11080 | xfered_len, |
dc146f7c VP |
11081 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11082 | ||
b3b9301e PA |
11083 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11084 | gdb_assert (annex == NULL); | |
11085 | return remote_read_qxfer | |
f6ac5f3d | 11086 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11087 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11088 | |
11089 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11090 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11091 | xfered_len, |
78d85199 | 11092 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11093 | |
11094 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11095 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11096 | xfered_len, |
169081d0 TG |
11097 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11098 | ||
9accd112 | 11099 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11100 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11101 | xfered_len, |
dda83cd7 | 11102 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9accd112 | 11103 | |
f4abbc16 | 11104 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11105 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11106 | len, xfered_len, |
11107 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11108 | ||
c78fa86a | 11109 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11110 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11111 | len, xfered_len, |
11112 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11113 | ||
1e3ff5ad | 11114 | default: |
2ed4b548 | 11115 | return TARGET_XFER_E_IO; |
c906108c SS |
11116 | } |
11117 | ||
0df8b418 | 11118 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11119 | large enough let the caller deal with it. */ |
ea9c271d | 11120 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11121 | return TARGET_XFER_E_IO; |
ea9c271d | 11122 | len = get_remote_packet_size (); |
1e3ff5ad | 11123 | |
23860348 | 11124 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11125 | if (!rs->remote_desc) |
8a3fe4f8 | 11126 | error (_("remote query is only available after target open")); |
c906108c | 11127 | |
1e3ff5ad | 11128 | gdb_assert (annex != NULL); |
4b8a223f | 11129 | gdb_assert (readbuf != NULL); |
c906108c | 11130 | |
8d64371b | 11131 | p2 = rs->buf.data (); |
c906108c SS |
11132 | *p2++ = 'q'; |
11133 | *p2++ = query_type; | |
11134 | ||
23860348 MS |
11135 | /* We used one buffer char for the remote protocol q command and |
11136 | another for the query type. As the remote protocol encapsulation | |
11137 | uses 4 chars plus one extra in case we are debugging | |
11138 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11139 | string. */ | |
c906108c | 11140 | i = 0; |
ea9c271d | 11141 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11142 | { |
1e3ff5ad AC |
11143 | /* Bad caller may have sent forbidden characters. */ |
11144 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11145 | *p2++ = annex[i]; | |
c906108c SS |
11146 | i++; |
11147 | } | |
1e3ff5ad AC |
11148 | *p2 = '\0'; |
11149 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11150 | |
6d820c5c | 11151 | i = putpkt (rs->buf); |
c5aa993b | 11152 | if (i < 0) |
2ed4b548 | 11153 | return TARGET_XFER_E_IO; |
c906108c | 11154 | |
8d64371b TT |
11155 | getpkt (&rs->buf, 0); |
11156 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11157 | |
9b409511 | 11158 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11159 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11160 | } |
11161 | ||
09c98b44 DB |
11162 | /* Implementation of to_get_memory_xfer_limit. */ |
11163 | ||
f6ac5f3d PA |
11164 | ULONGEST |
11165 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11166 | { |
11167 | return get_memory_write_packet_size (); | |
11168 | } | |
11169 | ||
f6ac5f3d PA |
11170 | int |
11171 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11172 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11173 | CORE_ADDR *found_addrp) | |
08388c79 | 11174 | { |
f5656ead | 11175 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11176 | struct remote_state *rs = get_remote_state (); |
11177 | int max_size = get_memory_write_packet_size (); | |
11178 | struct packet_config *packet = | |
11179 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11180 | /* Number of packet bytes used to encode the pattern; |
11181 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11182 | int escaped_pattern_len; |
0df8b418 | 11183 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11184 | int used_pattern_len; |
11185 | int i; | |
11186 | int found; | |
11187 | ULONGEST found_addr; | |
11188 | ||
4a72de73 TT |
11189 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
11190 | { | |
11191 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11192 | == len); | |
11193 | }; | |
11194 | ||
7cc244de PA |
11195 | /* Don't go to the target if we don't have to. This is done before |
11196 | checking packet_config_support to avoid the possibility that a | |
11197 | success for this edge case means the facility works in | |
11198 | general. */ | |
08388c79 DE |
11199 | if (pattern_len > search_space_len) |
11200 | return 0; | |
11201 | if (pattern_len == 0) | |
11202 | { | |
11203 | *found_addrp = start_addr; | |
11204 | return 1; | |
11205 | } | |
11206 | ||
11207 | /* If we already know the packet isn't supported, fall back to the simple | |
11208 | way of searching memory. */ | |
11209 | ||
4082afcc | 11210 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11211 | { |
11212 | /* Target doesn't provided special support, fall back and use the | |
11213 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11214 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11215 | pattern, pattern_len, found_addrp); |
11216 | } | |
11217 | ||
28439a30 PA |
11218 | /* Make sure the remote is pointing at the right process. */ |
11219 | set_general_process (); | |
11220 | ||
08388c79 | 11221 | /* Insert header. */ |
8d64371b | 11222 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11223 | "qSearch:memory:%s;%s;", |
5af949e3 | 11224 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11225 | phex_nz (search_space_len, sizeof (search_space_len))); |
11226 | max_size -= (i + 1); | |
11227 | ||
11228 | /* Escape as much data as fits into rs->buf. */ | |
11229 | escaped_pattern_len = | |
8d64371b TT |
11230 | remote_escape_output (pattern, pattern_len, 1, |
11231 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11232 | &used_pattern_len, max_size); |
11233 | ||
11234 | /* Bail if the pattern is too large. */ | |
11235 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11236 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11237 | |
8d64371b TT |
11238 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11239 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11240 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11241 | { | |
11242 | /* The request may not have worked because the command is not | |
11243 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11244 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11245 | { |
4a72de73 | 11246 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11247 | pattern, pattern_len, found_addrp); |
11248 | } | |
11249 | return -1; | |
11250 | } | |
11251 | ||
11252 | if (rs->buf[0] == '0') | |
11253 | found = 0; | |
11254 | else if (rs->buf[0] == '1') | |
11255 | { | |
11256 | found = 1; | |
11257 | if (rs->buf[1] != ',') | |
8d64371b TT |
11258 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11259 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11260 | *found_addrp = found_addr; |
11261 | } | |
11262 | else | |
8d64371b | 11263 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11264 | |
11265 | return found; | |
11266 | } | |
11267 | ||
f6ac5f3d PA |
11268 | void |
11269 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11270 | { |
d01949b6 | 11271 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11272 | char *p = rs->buf.data (); |
96baa820 | 11273 | |
5d93a237 | 11274 | if (!rs->remote_desc) |
8a3fe4f8 | 11275 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11276 | |
23860348 | 11277 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11278 | if (command == NULL) |
11279 | command = ""; | |
11280 | ||
23860348 | 11281 | /* The query prefix. */ |
8d64371b TT |
11282 | strcpy (rs->buf.data (), "qRcmd,"); |
11283 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11284 | |
8d64371b | 11285 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11286 | > get_remote_packet_size ()) |
8a3fe4f8 | 11287 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11288 | |
23860348 | 11289 | /* Encode the actual command. */ |
a30bf1f1 | 11290 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11291 | |
6d820c5c | 11292 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11293 | error (_("Communication problem with target.")); |
96baa820 JM |
11294 | |
11295 | /* get/display the response */ | |
11296 | while (1) | |
11297 | { | |
2e9f7625 DJ |
11298 | char *buf; |
11299 | ||
00bf0b85 | 11300 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11301 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11302 | rs->buf[0] = '\0'; |
8d64371b | 11303 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11304 | { |
11305 | /* Timeout. Continue to (try to) read responses. | |
11306 | This is better than stopping with an error, assuming the stub | |
11307 | is still executing the (long) monitor command. | |
11308 | If needed, the user can interrupt gdb using C-c, obtaining | |
11309 | an effect similar to stop on timeout. */ | |
11310 | continue; | |
11311 | } | |
8d64371b | 11312 | buf = rs->buf.data (); |
96baa820 | 11313 | if (buf[0] == '\0') |
8a3fe4f8 | 11314 | error (_("Target does not support this command.")); |
96baa820 JM |
11315 | if (buf[0] == 'O' && buf[1] != 'K') |
11316 | { | |
23860348 | 11317 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11318 | continue; |
11319 | } | |
11320 | if (strcmp (buf, "OK") == 0) | |
11321 | break; | |
7be570e7 JM |
11322 | if (strlen (buf) == 3 && buf[0] == 'E' |
11323 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11324 | { | |
8a3fe4f8 | 11325 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11326 | } |
96baa820 JM |
11327 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11328 | { | |
11329 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11330 | |
96baa820 JM |
11331 | fputc_unfiltered (c, outbuf); |
11332 | } | |
11333 | break; | |
11334 | } | |
11335 | } | |
11336 | ||
f6ac5f3d PA |
11337 | std::vector<mem_region> |
11338 | remote_target::memory_map () | |
fd79ecee | 11339 | { |
a664f67e | 11340 | std::vector<mem_region> result; |
9018be22 | 11341 | gdb::optional<gdb::char_vector> text |
8b88a78e | 11342 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11343 | |
11344 | if (text) | |
9018be22 | 11345 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11346 | |
11347 | return result; | |
11348 | } | |
11349 | ||
c906108c | 11350 | static void |
ac88e2de | 11351 | packet_command (const char *args, int from_tty) |
c906108c | 11352 | { |
6b8edb51 | 11353 | remote_target *remote = get_current_remote_target (); |
c906108c | 11354 | |
6b8edb51 | 11355 | if (remote == nullptr) |
8a3fe4f8 | 11356 | error (_("command can only be used with remote target")); |
c906108c | 11357 | |
6b8edb51 PA |
11358 | remote->packet_command (args, from_tty); |
11359 | } | |
11360 | ||
11361 | void | |
11362 | remote_target::packet_command (const char *args, int from_tty) | |
11363 | { | |
c5aa993b | 11364 | if (!args) |
8a3fe4f8 | 11365 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11366 | |
11367 | puts_filtered ("sending: "); | |
11368 | print_packet (args); | |
11369 | puts_filtered ("\n"); | |
11370 | putpkt (args); | |
11371 | ||
6b8edb51 PA |
11372 | remote_state *rs = get_remote_state (); |
11373 | ||
8d64371b | 11374 | getpkt (&rs->buf, 0); |
c906108c | 11375 | puts_filtered ("received: "); |
8d64371b | 11376 | print_packet (rs->buf.data ()); |
c906108c SS |
11377 | puts_filtered ("\n"); |
11378 | } | |
11379 | ||
11380 | #if 0 | |
23860348 | 11381 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11382 | |
a14ed312 | 11383 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11384 | |
a14ed312 | 11385 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11386 | |
a14ed312 | 11387 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11388 | |
a14ed312 | 11389 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11390 | |
23860348 | 11391 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11392 | |
a14ed312 | 11393 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11394 | |
23860348 | 11395 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11396 | |
a14ed312 | 11397 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11398 | |
a14ed312 | 11399 | static void init_remote_threadtests (void); |
c906108c | 11400 | |
23860348 | 11401 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11402 | |
11403 | static void | |
0b39b52e | 11404 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11405 | { |
11406 | int sample_thread = SAMPLE_THREAD; | |
11407 | ||
a3f17187 | 11408 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11409 | set_general_thread (sample_thread); |
c906108c SS |
11410 | } |
11411 | ||
11412 | ||
11413 | static void | |
0b39b52e | 11414 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11415 | { |
11416 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11417 | int pid = inferior_ptid.pid (); |
fd79271b | 11418 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11419 | |
79d7f229 | 11420 | if (remote_thread_alive (ptid)) |
c906108c SS |
11421 | printf_filtered ("PASS: Thread alive test\n"); |
11422 | else | |
11423 | printf_filtered ("FAIL: Thread alive test\n"); | |
11424 | } | |
11425 | ||
23860348 | 11426 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11427 | |
11428 | void | |
fba45db2 | 11429 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11430 | { |
11431 | char hexid[20]; | |
11432 | ||
405feb71 | 11433 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c SS |
11434 | hexid[16] = 0; |
11435 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11436 | } | |
11437 | ||
11438 | static void | |
0b39b52e | 11439 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11440 | { |
11441 | int startflag = 1; | |
11442 | threadref nextthread; | |
11443 | int done, result_count; | |
11444 | threadref threadlist[3]; | |
11445 | ||
11446 | printf_filtered ("Remote Threadlist test\n"); | |
11447 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11448 | &result_count, &threadlist[0])) | |
11449 | printf_filtered ("FAIL: threadlist test\n"); | |
11450 | else | |
11451 | { | |
11452 | threadref *scan = threadlist; | |
11453 | threadref *limit = scan + result_count; | |
11454 | ||
11455 | while (scan < limit) | |
11456 | output_threadid (" thread ", scan++); | |
11457 | } | |
11458 | } | |
11459 | ||
11460 | void | |
fba45db2 | 11461 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11462 | { |
11463 | output_threadid ("Threadid: ", &info->threadid); | |
11464 | printf_filtered ("Name: %s\n ", info->shortname); | |
11465 | printf_filtered ("State: %s\n", info->display); | |
11466 | printf_filtered ("other: %s\n\n", info->more_display); | |
11467 | } | |
11468 | ||
11469 | int | |
fba45db2 | 11470 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11471 | { |
11472 | int result; | |
11473 | int set; | |
11474 | struct gdb_ext_thread_info threadinfo; | |
11475 | ||
11476 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11477 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11478 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11479 | display_thread_info (&threadinfo); | |
11480 | return result; | |
11481 | } | |
11482 | ||
11483 | static void | |
0b39b52e | 11484 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11485 | { |
11486 | int athread = SAMPLE_THREAD; | |
11487 | threadref thread; | |
11488 | int set; | |
11489 | ||
11490 | int_to_threadref (&thread, athread); | |
11491 | printf_filtered ("Remote Threadinfo test\n"); | |
11492 | if (!get_and_display_threadinfo (&thread)) | |
11493 | printf_filtered ("FAIL cannot get thread info\n"); | |
11494 | } | |
11495 | ||
11496 | static int | |
fba45db2 | 11497 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11498 | { |
11499 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11500 | return get_and_display_threadinfo (ref); | |
11501 | } | |
11502 | ||
11503 | static void | |
0b39b52e | 11504 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11505 | { |
11506 | printf_filtered ("Remote Threadlist update test\n"); | |
11507 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11508 | } | |
11509 | ||
11510 | static void | |
11511 | init_remote_threadtests (void) | |
11512 | { | |
3e43a32a MS |
11513 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11514 | _("Fetch and print the remote list of " | |
590042fc | 11515 | "thread identifiers, one pkt only.")); |
c906108c | 11516 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11517 | _("Fetch and display info about one thread.")); |
c906108c | 11518 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11519 | _("Test setting to a different thread.")); |
c906108c | 11520 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11521 | _("Iterate through updating all remote thread info.")); |
c906108c | 11522 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11523 | _("Remote thread alive test.")); |
c906108c SS |
11524 | } |
11525 | ||
11526 | #endif /* 0 */ | |
11527 | ||
a068643d | 11528 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11529 | |
a068643d | 11530 | std::string |
f6ac5f3d | 11531 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11532 | { |
82f73884 | 11533 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11534 | |
d7e15655 | 11535 | if (ptid == null_ptid) |
7cee1e54 | 11536 | return normal_pid_to_str (ptid); |
0e998d96 | 11537 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11538 | { |
11539 | /* Printing an inferior target id. */ | |
11540 | ||
11541 | /* When multi-process extensions are off, there's no way in the | |
11542 | remote protocol to know the remote process id, if there's any | |
11543 | at all. There's one exception --- when we're connected with | |
11544 | target extended-remote, and we manually attached to a process | |
11545 | with "attach PID". We don't record anywhere a flag that | |
11546 | allows us to distinguish that case from the case of | |
11547 | connecting with extended-remote and the stub already being | |
11548 | attached to a process, and reporting yes to qAttached, hence | |
11549 | no smart special casing here. */ | |
11550 | if (!remote_multi_process_p (rs)) | |
a068643d | 11551 | return "Remote target"; |
ecd0ada5 PA |
11552 | |
11553 | return normal_pid_to_str (ptid); | |
82f73884 | 11554 | } |
ecd0ada5 | 11555 | else |
79d7f229 | 11556 | { |
d7e15655 | 11557 | if (magic_null_ptid == ptid) |
a068643d | 11558 | return "Thread <main>"; |
8020350c | 11559 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11560 | if (ptid.lwp () == 0) |
de0d863e DB |
11561 | return normal_pid_to_str (ptid); |
11562 | else | |
a068643d TT |
11563 | return string_printf ("Thread %d.%ld", |
11564 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11565 | else |
a068643d | 11566 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11567 | } |
f3fb8c85 MS |
11568 | } |
11569 | ||
38691318 KB |
11570 | /* Get the address of the thread local variable in OBJFILE which is |
11571 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11572 | ||
f6ac5f3d PA |
11573 | CORE_ADDR |
11574 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11575 | CORE_ADDR offset) | |
38691318 | 11576 | { |
4082afcc | 11577 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11578 | { |
11579 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11580 | char *p = rs->buf.data (); |
11581 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11582 | enum packet_result result; |
38691318 KB |
11583 | |
11584 | strcpy (p, "qGetTLSAddr:"); | |
11585 | p += strlen (p); | |
82f73884 | 11586 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11587 | *p++ = ','; |
11588 | p += hexnumstr (p, offset); | |
11589 | *p++ = ','; | |
11590 | p += hexnumstr (p, lm); | |
11591 | *p++ = '\0'; | |
11592 | ||
6d820c5c | 11593 | putpkt (rs->buf); |
8d64371b | 11594 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11595 | result = packet_ok (rs->buf, |
11596 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11597 | if (result == PACKET_OK) |
38691318 | 11598 | { |
b926417a | 11599 | ULONGEST addr; |
38691318 | 11600 | |
8d64371b | 11601 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11602 | return addr; |
38691318 | 11603 | } |
571dd617 | 11604 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11605 | throw_error (TLS_GENERIC_ERROR, |
11606 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11607 | else |
109c3e39 AC |
11608 | throw_error (TLS_GENERIC_ERROR, |
11609 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11610 | } |
11611 | else | |
109c3e39 AC |
11612 | throw_error (TLS_GENERIC_ERROR, |
11613 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11614 | /* Not reached. */ |
11615 | return 0; | |
11616 | } | |
11617 | ||
711e434b PM |
11618 | /* Provide thread local base, i.e. Thread Information Block address. |
11619 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11620 | ||
57810aa7 | 11621 | bool |
f6ac5f3d | 11622 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11623 | { |
4082afcc | 11624 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11625 | { |
11626 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11627 | char *p = rs->buf.data (); |
11628 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11629 | enum packet_result result; |
11630 | ||
11631 | strcpy (p, "qGetTIBAddr:"); | |
11632 | p += strlen (p); | |
11633 | p = write_ptid (p, endp, ptid); | |
11634 | *p++ = '\0'; | |
11635 | ||
11636 | putpkt (rs->buf); | |
8d64371b | 11637 | getpkt (&rs->buf, 0); |
711e434b PM |
11638 | result = packet_ok (rs->buf, |
11639 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11640 | if (result == PACKET_OK) | |
11641 | { | |
b926417a | 11642 | ULONGEST val; |
8d64371b | 11643 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11644 | if (addr) |
b926417a | 11645 | *addr = (CORE_ADDR) val; |
57810aa7 | 11646 | return true; |
711e434b PM |
11647 | } |
11648 | else if (result == PACKET_UNKNOWN) | |
11649 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11650 | else | |
11651 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11652 | } | |
11653 | else | |
11654 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11655 | /* Not reached. */ | |
57810aa7 | 11656 | return false; |
711e434b PM |
11657 | } |
11658 | ||
29709017 DJ |
11659 | /* Support for inferring a target description based on the current |
11660 | architecture and the size of a 'g' packet. While the 'g' packet | |
11661 | can have any size (since optional registers can be left off the | |
11662 | end), some sizes are easily recognizable given knowledge of the | |
11663 | approximate architecture. */ | |
11664 | ||
11665 | struct remote_g_packet_guess | |
11666 | { | |
eefce37f TT |
11667 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11668 | : bytes (bytes_), | |
11669 | tdesc (tdesc_) | |
11670 | { | |
11671 | } | |
11672 | ||
29709017 DJ |
11673 | int bytes; |
11674 | const struct target_desc *tdesc; | |
11675 | }; | |
29709017 | 11676 | |
eefce37f | 11677 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11678 | { |
eefce37f | 11679 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11680 | }; |
11681 | ||
11682 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11683 | ||
11684 | static void * | |
11685 | remote_g_packet_data_init (struct obstack *obstack) | |
11686 | { | |
eefce37f | 11687 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11688 | } |
11689 | ||
11690 | void | |
11691 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11692 | const struct target_desc *tdesc) | |
11693 | { | |
11694 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11695 | = ((struct remote_g_packet_data *) |
11696 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11697 | |
11698 | gdb_assert (tdesc != NULL); | |
11699 | ||
eefce37f TT |
11700 | for (const remote_g_packet_guess &guess : data->guesses) |
11701 | if (guess.bytes == bytes) | |
29709017 | 11702 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11703 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11704 | bytes); |
11705 | ||
eefce37f | 11706 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11707 | } |
11708 | ||
eefce37f TT |
11709 | /* Return true if remote_read_description would do anything on this target |
11710 | and architecture, false otherwise. */ | |
d962ef82 | 11711 | |
eefce37f | 11712 | static bool |
d962ef82 DJ |
11713 | remote_read_description_p (struct target_ops *target) |
11714 | { | |
11715 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11716 | = ((struct remote_g_packet_data *) |
11717 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11718 | |
eefce37f | 11719 | return !data->guesses.empty (); |
d962ef82 DJ |
11720 | } |
11721 | ||
f6ac5f3d PA |
11722 | const struct target_desc * |
11723 | remote_target::read_description () | |
29709017 DJ |
11724 | { |
11725 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11726 | = ((struct remote_g_packet_data *) |
11727 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11728 | |
d962ef82 DJ |
11729 | /* Do not try this during initial connection, when we do not know |
11730 | whether there is a running but stopped thread. */ | |
55f6301a | 11731 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 11732 | return beneath ()->read_description (); |
d962ef82 | 11733 | |
eefce37f | 11734 | if (!data->guesses.empty ()) |
29709017 | 11735 | { |
29709017 DJ |
11736 | int bytes = send_g_packet (); |
11737 | ||
eefce37f TT |
11738 | for (const remote_g_packet_guess &guess : data->guesses) |
11739 | if (guess.bytes == bytes) | |
11740 | return guess.tdesc; | |
29709017 DJ |
11741 | |
11742 | /* We discard the g packet. A minor optimization would be to | |
11743 | hold on to it, and fill the register cache once we have selected | |
11744 | an architecture, but it's too tricky to do safely. */ | |
11745 | } | |
11746 | ||
b6a8c27b | 11747 | return beneath ()->read_description (); |
29709017 DJ |
11748 | } |
11749 | ||
a6b151f1 DJ |
11750 | /* Remote file transfer support. This is host-initiated I/O, not |
11751 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11752 | ||
11753 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11754 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11755 | decrease *LEFT. Otherwise raise an error. */ | |
11756 | ||
11757 | static void | |
a121b7c1 | 11758 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11759 | { |
11760 | int len = strlen (string); | |
11761 | ||
11762 | if (len > *left) | |
11763 | error (_("Packet too long for target.")); | |
11764 | ||
11765 | memcpy (*buffer, string, len); | |
11766 | *buffer += len; | |
11767 | *left -= len; | |
11768 | ||
11769 | /* NUL-terminate the buffer as a convenience, if there is | |
11770 | room. */ | |
11771 | if (*left) | |
11772 | **buffer = '\0'; | |
11773 | } | |
11774 | ||
11775 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11776 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11777 | decrease *LEFT. Otherwise raise an error. */ | |
11778 | ||
11779 | static void | |
11780 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11781 | int len) | |
11782 | { | |
11783 | if (2 * len > *left) | |
11784 | error (_("Packet too long for target.")); | |
11785 | ||
11786 | bin2hex (bytes, *buffer, len); | |
11787 | *buffer += 2 * len; | |
11788 | *left -= 2 * len; | |
11789 | ||
11790 | /* NUL-terminate the buffer as a convenience, if there is | |
11791 | room. */ | |
11792 | if (*left) | |
11793 | **buffer = '\0'; | |
11794 | } | |
11795 | ||
11796 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11797 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11798 | decrease *LEFT. Otherwise raise an error. */ | |
11799 | ||
11800 | static void | |
11801 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11802 | { | |
11803 | int len = hexnumlen (value); | |
11804 | ||
11805 | if (len > *left) | |
11806 | error (_("Packet too long for target.")); | |
11807 | ||
11808 | hexnumstr (*buffer, value); | |
11809 | *buffer += len; | |
11810 | *left -= len; | |
11811 | ||
11812 | /* NUL-terminate the buffer as a convenience, if there is | |
11813 | room. */ | |
11814 | if (*left) | |
11815 | **buffer = '\0'; | |
11816 | } | |
11817 | ||
11818 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11819 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11820 | was included, and *ATTACHMENT to point to the start of the annex | |
11821 | if any. The length of the packet isn't needed here; there may | |
11822 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11823 | ||
11824 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11825 | -1 is returned, the other variables may not be initialized. */ | |
11826 | ||
11827 | static int | |
11828 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11829 | int *remote_errno, char **attachment) | |
11830 | { | |
11831 | char *p, *p2; | |
11832 | ||
11833 | *remote_errno = 0; | |
11834 | *attachment = NULL; | |
11835 | ||
11836 | if (buffer[0] != 'F') | |
11837 | return -1; | |
11838 | ||
11839 | errno = 0; | |
11840 | *retcode = strtol (&buffer[1], &p, 16); | |
11841 | if (errno != 0 || p == &buffer[1]) | |
11842 | return -1; | |
11843 | ||
11844 | /* Check for ",errno". */ | |
11845 | if (*p == ',') | |
11846 | { | |
11847 | errno = 0; | |
11848 | *remote_errno = strtol (p + 1, &p2, 16); | |
11849 | if (errno != 0 || p + 1 == p2) | |
11850 | return -1; | |
11851 | p = p2; | |
11852 | } | |
11853 | ||
11854 | /* Check for ";attachment". If there is no attachment, the | |
11855 | packet should end here. */ | |
11856 | if (*p == ';') | |
11857 | { | |
11858 | *attachment = p + 1; | |
11859 | return 0; | |
11860 | } | |
11861 | else if (*p == '\0') | |
11862 | return 0; | |
11863 | else | |
11864 | return -1; | |
11865 | } | |
11866 | ||
11867 | /* Send a prepared I/O packet to the target and read its response. | |
11868 | The prepared packet is in the global RS->BUF before this function | |
11869 | is called, and the answer is there when we return. | |
11870 | ||
11871 | COMMAND_BYTES is the length of the request to send, which may include | |
11872 | binary data. WHICH_PACKET is the packet configuration to check | |
11873 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11874 | is set to the error number and -1 is returned. Otherwise the value | |
11875 | returned by the function is returned. | |
11876 | ||
11877 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11878 | attachment is expected; an error will be reported if there's a | |
11879 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11880 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11881 | attachment's length. */ | |
11882 | ||
6b8edb51 PA |
11883 | int |
11884 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
11885 | int *remote_errno, char **attachment, | |
11886 | int *attachment_len) | |
a6b151f1 DJ |
11887 | { |
11888 | struct remote_state *rs = get_remote_state (); | |
11889 | int ret, bytes_read; | |
11890 | char *attachment_tmp; | |
11891 | ||
20db9c52 | 11892 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11893 | { |
11894 | *remote_errno = FILEIO_ENOSYS; | |
11895 | return -1; | |
11896 | } | |
11897 | ||
8d64371b TT |
11898 | putpkt_binary (rs->buf.data (), command_bytes); |
11899 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
11900 | |
11901 | /* If it timed out, something is wrong. Don't try to parse the | |
11902 | buffer. */ | |
11903 | if (bytes_read < 0) | |
11904 | { | |
11905 | *remote_errno = FILEIO_EINVAL; | |
11906 | return -1; | |
11907 | } | |
11908 | ||
11909 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11910 | { | |
11911 | case PACKET_ERROR: | |
11912 | *remote_errno = FILEIO_EINVAL; | |
11913 | return -1; | |
11914 | case PACKET_UNKNOWN: | |
11915 | *remote_errno = FILEIO_ENOSYS; | |
11916 | return -1; | |
11917 | case PACKET_OK: | |
11918 | break; | |
11919 | } | |
11920 | ||
8d64371b | 11921 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
11922 | &attachment_tmp)) |
11923 | { | |
11924 | *remote_errno = FILEIO_EINVAL; | |
11925 | return -1; | |
11926 | } | |
11927 | ||
11928 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11929 | if ((attachment_tmp == NULL && attachment != NULL) | |
11930 | || (attachment_tmp != NULL && attachment == NULL)) | |
11931 | { | |
11932 | *remote_errno = FILEIO_EINVAL; | |
11933 | return -1; | |
11934 | } | |
11935 | ||
11936 | /* If an attachment was found, it must point into the packet buffer; | |
11937 | work out how many bytes there were. */ | |
11938 | if (attachment_tmp != NULL) | |
11939 | { | |
11940 | *attachment = attachment_tmp; | |
8d64371b | 11941 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
11942 | } |
11943 | ||
11944 | return ret; | |
11945 | } | |
11946 | ||
dd194f6b | 11947 | /* See declaration.h. */ |
80152258 | 11948 | |
dd194f6b PA |
11949 | void |
11950 | readahead_cache::invalidate () | |
80152258 | 11951 | { |
dd194f6b | 11952 | this->fd = -1; |
80152258 PA |
11953 | } |
11954 | ||
dd194f6b | 11955 | /* See declaration.h. */ |
80152258 | 11956 | |
dd194f6b PA |
11957 | void |
11958 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 11959 | { |
dd194f6b PA |
11960 | if (this->fd == fd) |
11961 | this->fd = -1; | |
80152258 PA |
11962 | } |
11963 | ||
15a201c8 GB |
11964 | /* Set the filesystem remote_hostio functions that take FILENAME |
11965 | arguments will use. Return 0 on success, or -1 if an error | |
11966 | occurs (and set *REMOTE_ERRNO). */ | |
11967 | ||
6b8edb51 PA |
11968 | int |
11969 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
11970 | int *remote_errno) | |
15a201c8 GB |
11971 | { |
11972 | struct remote_state *rs = get_remote_state (); | |
11973 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 11974 | char *p = rs->buf.data (); |
15a201c8 GB |
11975 | int left = get_remote_packet_size () - 1; |
11976 | char arg[9]; | |
11977 | int ret; | |
11978 | ||
11979 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11980 | return 0; | |
11981 | ||
11982 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11983 | return 0; | |
11984 | ||
11985 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11986 | ||
11987 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11988 | remote_buffer_add_string (&p, &left, arg); | |
11989 | ||
8d64371b | 11990 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
11991 | remote_errno, NULL, NULL); |
11992 | ||
11993 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11994 | return 0; | |
11995 | ||
11996 | if (ret == 0) | |
11997 | rs->fs_pid = required_pid; | |
11998 | ||
11999 | return ret; | |
12000 | } | |
12001 | ||
12e2a5fd | 12002 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12003 | |
6b8edb51 PA |
12004 | int |
12005 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12006 | int flags, int mode, int warn_if_slow, | |
12007 | int *remote_errno) | |
a6b151f1 DJ |
12008 | { |
12009 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12010 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12011 | int left = get_remote_packet_size () - 1; |
12012 | ||
4313b8c0 GB |
12013 | if (warn_if_slow) |
12014 | { | |
12015 | static int warning_issued = 0; | |
12016 | ||
12017 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
12018 | filename); | |
12019 | ||
12020 | if (!warning_issued) | |
12021 | { | |
12022 | warning (_("File transfers from remote targets can be slow." | |
12023 | " Use \"set sysroot\" to access files locally" | |
12024 | " instead.")); | |
12025 | warning_issued = 1; | |
12026 | } | |
12027 | } | |
12028 | ||
15a201c8 GB |
12029 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12030 | return -1; | |
12031 | ||
a6b151f1 DJ |
12032 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12033 | ||
12034 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12035 | strlen (filename)); | |
12036 | remote_buffer_add_string (&p, &left, ","); | |
12037 | ||
12038 | remote_buffer_add_int (&p, &left, flags); | |
12039 | remote_buffer_add_string (&p, &left, ","); | |
12040 | ||
12041 | remote_buffer_add_int (&p, &left, mode); | |
12042 | ||
8d64371b | 12043 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12044 | remote_errno, NULL, NULL); |
12045 | } | |
12046 | ||
f6ac5f3d PA |
12047 | int |
12048 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12049 | int flags, int mode, int warn_if_slow, | |
12050 | int *remote_errno) | |
12051 | { | |
6b8edb51 | 12052 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12053 | remote_errno); |
12054 | } | |
12055 | ||
12e2a5fd | 12056 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12057 | |
6b8edb51 PA |
12058 | int |
12059 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12060 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12061 | { |
12062 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12063 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12064 | int left = get_remote_packet_size (); |
12065 | int out_len; | |
12066 | ||
dd194f6b | 12067 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12068 | |
a6b151f1 DJ |
12069 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12070 | ||
12071 | remote_buffer_add_int (&p, &left, fd); | |
12072 | remote_buffer_add_string (&p, &left, ","); | |
12073 | ||
12074 | remote_buffer_add_int (&p, &left, offset); | |
12075 | remote_buffer_add_string (&p, &left, ","); | |
12076 | ||
124e13d9 | 12077 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12078 | (get_remote_packet_size () |
12079 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12080 | |
8d64371b | 12081 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12082 | remote_errno, NULL, NULL); |
12083 | } | |
12084 | ||
f6ac5f3d PA |
12085 | int |
12086 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12087 | ULONGEST offset, int *remote_errno) | |
12088 | { | |
6b8edb51 | 12089 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12090 | } |
12091 | ||
80152258 PA |
12092 | /* Helper for the implementation of to_fileio_pread. Read the file |
12093 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12094 | |
6b8edb51 PA |
12095 | int |
12096 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12097 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12098 | { |
12099 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12100 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12101 | char *attachment; |
12102 | int left = get_remote_packet_size (); | |
12103 | int ret, attachment_len; | |
12104 | int read_len; | |
12105 | ||
12106 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12107 | ||
12108 | remote_buffer_add_int (&p, &left, fd); | |
12109 | remote_buffer_add_string (&p, &left, ","); | |
12110 | ||
12111 | remote_buffer_add_int (&p, &left, len); | |
12112 | remote_buffer_add_string (&p, &left, ","); | |
12113 | ||
12114 | remote_buffer_add_int (&p, &left, offset); | |
12115 | ||
8d64371b | 12116 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12117 | remote_errno, &attachment, |
12118 | &attachment_len); | |
12119 | ||
12120 | if (ret < 0) | |
12121 | return ret; | |
12122 | ||
bc20a4af | 12123 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12124 | read_buf, len); |
12125 | if (read_len != ret) | |
12126 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12127 | ||
12128 | return ret; | |
12129 | } | |
12130 | ||
dd194f6b | 12131 | /* See declaration.h. */ |
80152258 | 12132 | |
dd194f6b PA |
12133 | int |
12134 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12135 | ULONGEST offset) | |
80152258 | 12136 | { |
dd194f6b PA |
12137 | if (this->fd == fd |
12138 | && this->offset <= offset | |
12139 | && offset < this->offset + this->bufsize) | |
80152258 | 12140 | { |
dd194f6b | 12141 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12142 | |
12143 | if (offset + len > max) | |
12144 | len = max - offset; | |
12145 | ||
dd194f6b | 12146 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12147 | return len; |
12148 | } | |
12149 | ||
12150 | return 0; | |
12151 | } | |
12152 | ||
12153 | /* Implementation of to_fileio_pread. */ | |
12154 | ||
6b8edb51 PA |
12155 | int |
12156 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12157 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12158 | { |
12159 | int ret; | |
12160 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12161 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12162 | |
dd194f6b | 12163 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12164 | if (ret > 0) |
12165 | { | |
12166 | cache->hit_count++; | |
12167 | ||
12168 | if (remote_debug) | |
12169 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
12170 | pulongest (cache->hit_count)); | |
12171 | return ret; | |
12172 | } | |
12173 | ||
12174 | cache->miss_count++; | |
12175 | if (remote_debug) | |
12176 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
12177 | pulongest (cache->miss_count)); | |
12178 | ||
12179 | cache->fd = fd; | |
12180 | cache->offset = offset; | |
12181 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12182 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12183 | |
6b8edb51 | 12184 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12185 | cache->offset, remote_errno); |
12186 | if (ret <= 0) | |
12187 | { | |
dd194f6b | 12188 | cache->invalidate_fd (fd); |
80152258 PA |
12189 | return ret; |
12190 | } | |
12191 | ||
12192 | cache->bufsize = ret; | |
dd194f6b | 12193 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12194 | } |
12195 | ||
f6ac5f3d PA |
12196 | int |
12197 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12198 | ULONGEST offset, int *remote_errno) | |
12199 | { | |
6b8edb51 | 12200 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12201 | } |
12202 | ||
12e2a5fd | 12203 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12204 | |
6b8edb51 PA |
12205 | int |
12206 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12207 | { |
12208 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12209 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12210 | int left = get_remote_packet_size () - 1; |
12211 | ||
dd194f6b | 12212 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12213 | |
a6b151f1 DJ |
12214 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12215 | ||
12216 | remote_buffer_add_int (&p, &left, fd); | |
12217 | ||
8d64371b | 12218 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12219 | remote_errno, NULL, NULL); |
12220 | } | |
12221 | ||
f6ac5f3d PA |
12222 | int |
12223 | remote_target::fileio_close (int fd, int *remote_errno) | |
12224 | { | |
6b8edb51 | 12225 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12226 | } |
12227 | ||
12e2a5fd | 12228 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12229 | |
6b8edb51 PA |
12230 | int |
12231 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12232 | int *remote_errno) | |
a6b151f1 DJ |
12233 | { |
12234 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12235 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12236 | int left = get_remote_packet_size () - 1; |
12237 | ||
15a201c8 GB |
12238 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12239 | return -1; | |
12240 | ||
a6b151f1 DJ |
12241 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12242 | ||
12243 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12244 | strlen (filename)); | |
12245 | ||
8d64371b | 12246 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12247 | remote_errno, NULL, NULL); |
12248 | } | |
12249 | ||
f6ac5f3d PA |
12250 | int |
12251 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12252 | int *remote_errno) | |
12253 | { | |
6b8edb51 | 12254 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12255 | } |
12256 | ||
12e2a5fd | 12257 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12258 | |
f6ac5f3d PA |
12259 | gdb::optional<std::string> |
12260 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12261 | int *remote_errno) | |
b9e7b9c3 UW |
12262 | { |
12263 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12264 | char *p = rs->buf.data (); |
b9e7b9c3 UW |
12265 | char *attachment; |
12266 | int left = get_remote_packet_size (); | |
12267 | int len, attachment_len; | |
12268 | int read_len; | |
b9e7b9c3 | 12269 | |
15a201c8 | 12270 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12271 | return {}; |
15a201c8 | 12272 | |
b9e7b9c3 UW |
12273 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12274 | ||
12275 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12276 | strlen (filename)); | |
12277 | ||
8d64371b | 12278 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12279 | remote_errno, &attachment, |
12280 | &attachment_len); | |
12281 | ||
12282 | if (len < 0) | |
e0d3522b | 12283 | return {}; |
b9e7b9c3 | 12284 | |
e0d3522b | 12285 | std::string ret (len, '\0'); |
b9e7b9c3 | 12286 | |
bc20a4af | 12287 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12288 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12289 | if (read_len != len) |
12290 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12291 | ||
b9e7b9c3 UW |
12292 | return ret; |
12293 | } | |
12294 | ||
12e2a5fd | 12295 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12296 | |
f6ac5f3d PA |
12297 | int |
12298 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12299 | { |
12300 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12301 | char *p = rs->buf.data (); |
0a93529c GB |
12302 | int left = get_remote_packet_size (); |
12303 | int attachment_len, ret; | |
12304 | char *attachment; | |
12305 | struct fio_stat fst; | |
12306 | int read_len; | |
12307 | ||
464b0089 GB |
12308 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12309 | ||
12310 | remote_buffer_add_int (&p, &left, fd); | |
12311 | ||
8d64371b | 12312 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12313 | remote_errno, &attachment, |
12314 | &attachment_len); | |
12315 | if (ret < 0) | |
0a93529c | 12316 | { |
464b0089 GB |
12317 | if (*remote_errno != FILEIO_ENOSYS) |
12318 | return ret; | |
12319 | ||
0a93529c GB |
12320 | /* Strictly we should return -1, ENOSYS here, but when |
12321 | "set sysroot remote:" was implemented in August 2008 | |
12322 | BFD's need for a stat function was sidestepped with | |
12323 | this hack. This was not remedied until March 2015 | |
12324 | so we retain the previous behavior to avoid breaking | |
12325 | compatibility. | |
12326 | ||
12327 | Note that the memset is a March 2015 addition; older | |
12328 | GDBs set st_size *and nothing else* so the structure | |
12329 | would have garbage in all other fields. This might | |
12330 | break something but retaining the previous behavior | |
12331 | here would be just too wrong. */ | |
12332 | ||
12333 | memset (st, 0, sizeof (struct stat)); | |
12334 | st->st_size = INT_MAX; | |
12335 | return 0; | |
12336 | } | |
12337 | ||
0a93529c GB |
12338 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12339 | (gdb_byte *) &fst, sizeof (fst)); | |
12340 | ||
12341 | if (read_len != ret) | |
12342 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12343 | ||
12344 | if (read_len != sizeof (fst)) | |
12345 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12346 | read_len, (int) sizeof (fst)); | |
12347 | ||
12348 | remote_fileio_to_host_stat (&fst, st); | |
12349 | ||
12350 | return 0; | |
12351 | } | |
12352 | ||
12e2a5fd | 12353 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12354 | |
57810aa7 | 12355 | bool |
f6ac5f3d | 12356 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12357 | { |
12358 | /* Valgrind GDB presents itself as a remote target but works | |
12359 | on the local filesystem: it does not implement remote get | |
12360 | and users are not expected to set a sysroot. To handle | |
12361 | this case we treat the remote filesystem as local if the | |
12362 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12363 | does not support vFile:open. */ | |
a3be80c3 | 12364 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12365 | { |
12366 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12367 | ||
12368 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12369 | { | |
12370 | int fd, remote_errno; | |
12371 | ||
12372 | /* Try opening a file to probe support. The supplied | |
12373 | filename is irrelevant, we only care about whether | |
12374 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12375 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12376 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12377 | &remote_errno); |
12378 | ||
12379 | if (fd >= 0) | |
6b8edb51 | 12380 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12381 | |
12382 | ps = packet_support (PACKET_vFile_open); | |
12383 | } | |
12384 | ||
12385 | if (ps == PACKET_DISABLE) | |
12386 | { | |
12387 | static int warning_issued = 0; | |
12388 | ||
12389 | if (!warning_issued) | |
12390 | { | |
12391 | warning (_("remote target does not support file" | |
12392 | " transfer, attempting to access files" | |
12393 | " from local filesystem.")); | |
12394 | warning_issued = 1; | |
12395 | } | |
12396 | ||
57810aa7 | 12397 | return true; |
e3dd7556 GB |
12398 | } |
12399 | } | |
12400 | ||
57810aa7 | 12401 | return false; |
e3dd7556 GB |
12402 | } |
12403 | ||
a6b151f1 DJ |
12404 | static int |
12405 | remote_fileio_errno_to_host (int errnum) | |
12406 | { | |
12407 | switch (errnum) | |
12408 | { | |
12409 | case FILEIO_EPERM: | |
dda83cd7 | 12410 | return EPERM; |
a6b151f1 | 12411 | case FILEIO_ENOENT: |
dda83cd7 | 12412 | return ENOENT; |
a6b151f1 | 12413 | case FILEIO_EINTR: |
dda83cd7 | 12414 | return EINTR; |
a6b151f1 | 12415 | case FILEIO_EIO: |
dda83cd7 | 12416 | return EIO; |
a6b151f1 | 12417 | case FILEIO_EBADF: |
dda83cd7 | 12418 | return EBADF; |
a6b151f1 | 12419 | case FILEIO_EACCES: |
dda83cd7 | 12420 | return EACCES; |
a6b151f1 | 12421 | case FILEIO_EFAULT: |
dda83cd7 | 12422 | return EFAULT; |
a6b151f1 | 12423 | case FILEIO_EBUSY: |
dda83cd7 | 12424 | return EBUSY; |
a6b151f1 | 12425 | case FILEIO_EEXIST: |
dda83cd7 | 12426 | return EEXIST; |
a6b151f1 | 12427 | case FILEIO_ENODEV: |
dda83cd7 | 12428 | return ENODEV; |
a6b151f1 | 12429 | case FILEIO_ENOTDIR: |
dda83cd7 | 12430 | return ENOTDIR; |
a6b151f1 | 12431 | case FILEIO_EISDIR: |
dda83cd7 | 12432 | return EISDIR; |
a6b151f1 | 12433 | case FILEIO_EINVAL: |
dda83cd7 | 12434 | return EINVAL; |
a6b151f1 | 12435 | case FILEIO_ENFILE: |
dda83cd7 | 12436 | return ENFILE; |
a6b151f1 | 12437 | case FILEIO_EMFILE: |
dda83cd7 | 12438 | return EMFILE; |
a6b151f1 | 12439 | case FILEIO_EFBIG: |
dda83cd7 | 12440 | return EFBIG; |
a6b151f1 | 12441 | case FILEIO_ENOSPC: |
dda83cd7 | 12442 | return ENOSPC; |
a6b151f1 | 12443 | case FILEIO_ESPIPE: |
dda83cd7 | 12444 | return ESPIPE; |
a6b151f1 | 12445 | case FILEIO_EROFS: |
dda83cd7 | 12446 | return EROFS; |
a6b151f1 | 12447 | case FILEIO_ENOSYS: |
dda83cd7 | 12448 | return ENOSYS; |
a6b151f1 | 12449 | case FILEIO_ENAMETOOLONG: |
dda83cd7 | 12450 | return ENAMETOOLONG; |
a6b151f1 DJ |
12451 | } |
12452 | return -1; | |
12453 | } | |
12454 | ||
12455 | static char * | |
12456 | remote_hostio_error (int errnum) | |
12457 | { | |
12458 | int host_error = remote_fileio_errno_to_host (errnum); | |
12459 | ||
12460 | if (host_error == -1) | |
12461 | error (_("Unknown remote I/O error %d"), errnum); | |
12462 | else | |
12463 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12464 | } | |
12465 | ||
440b7aec PA |
12466 | /* A RAII wrapper around a remote file descriptor. */ |
12467 | ||
12468 | class scoped_remote_fd | |
a6b151f1 | 12469 | { |
440b7aec | 12470 | public: |
6b8edb51 PA |
12471 | scoped_remote_fd (remote_target *remote, int fd) |
12472 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12473 | { |
12474 | } | |
a6b151f1 | 12475 | |
440b7aec PA |
12476 | ~scoped_remote_fd () |
12477 | { | |
12478 | if (m_fd != -1) | |
12479 | { | |
12480 | try | |
12481 | { | |
12482 | int remote_errno; | |
6b8edb51 | 12483 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12484 | } |
12485 | catch (...) | |
12486 | { | |
12487 | /* Swallow exception before it escapes the dtor. If | |
12488 | something goes wrong, likely the connection is gone, | |
12489 | and there's nothing else that can be done. */ | |
12490 | } | |
12491 | } | |
12492 | } | |
12493 | ||
12494 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12495 | ||
12496 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12497 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12498 | { |
12499 | int fd = m_fd; | |
12500 | m_fd = -1; | |
12501 | return fd; | |
12502 | } | |
12503 | ||
12504 | /* Return the owned file descriptor. */ | |
12505 | int get () const noexcept | |
12506 | { | |
12507 | return m_fd; | |
12508 | } | |
12509 | ||
12510 | private: | |
6b8edb51 PA |
12511 | /* The remote target. */ |
12512 | remote_target *m_remote; | |
12513 | ||
440b7aec PA |
12514 | /* The owned remote I/O file descriptor. */ |
12515 | int m_fd; | |
12516 | }; | |
a6b151f1 DJ |
12517 | |
12518 | void | |
12519 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12520 | { |
12521 | remote_target *remote = get_current_remote_target (); | |
12522 | ||
12523 | if (remote == nullptr) | |
12524 | error (_("command can only be used with remote target")); | |
12525 | ||
12526 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12527 | } | |
12528 | ||
12529 | void | |
12530 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12531 | int from_tty) | |
a6b151f1 | 12532 | { |
440b7aec | 12533 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12534 | int bytes_in_buffer; |
12535 | int saw_eof; | |
12536 | ULONGEST offset; | |
a6b151f1 | 12537 | |
d419f42d | 12538 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12539 | if (file == NULL) |
12540 | perror_with_name (local_file); | |
a6b151f1 | 12541 | |
440b7aec | 12542 | scoped_remote_fd fd |
6b8edb51 PA |
12543 | (this, remote_hostio_open (NULL, |
12544 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12545 | | FILEIO_O_TRUNC), | |
12546 | 0700, 0, &remote_errno)); | |
440b7aec | 12547 | if (fd.get () == -1) |
a6b151f1 DJ |
12548 | remote_hostio_error (remote_errno); |
12549 | ||
12550 | /* Send up to this many bytes at once. They won't all fit in the | |
12551 | remote packet limit, so we'll transfer slightly fewer. */ | |
12552 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12553 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12554 | |
a6b151f1 DJ |
12555 | bytes_in_buffer = 0; |
12556 | saw_eof = 0; | |
12557 | offset = 0; | |
12558 | while (bytes_in_buffer || !saw_eof) | |
12559 | { | |
12560 | if (!saw_eof) | |
12561 | { | |
5ca3b260 | 12562 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12563 | io_size - bytes_in_buffer, |
d419f42d | 12564 | file.get ()); |
a6b151f1 DJ |
12565 | if (bytes == 0) |
12566 | { | |
d419f42d | 12567 | if (ferror (file.get ())) |
a6b151f1 DJ |
12568 | error (_("Error reading %s."), local_file); |
12569 | else | |
12570 | { | |
12571 | /* EOF. Unless there is something still in the | |
12572 | buffer from the last iteration, we are done. */ | |
12573 | saw_eof = 1; | |
12574 | if (bytes_in_buffer == 0) | |
12575 | break; | |
12576 | } | |
12577 | } | |
12578 | } | |
12579 | else | |
12580 | bytes = 0; | |
12581 | ||
12582 | bytes += bytes_in_buffer; | |
12583 | bytes_in_buffer = 0; | |
12584 | ||
5ca3b260 | 12585 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12586 | offset, &remote_errno); |
a6b151f1 DJ |
12587 | |
12588 | if (retcode < 0) | |
12589 | remote_hostio_error (remote_errno); | |
12590 | else if (retcode == 0) | |
12591 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12592 | else if (retcode < bytes) | |
12593 | { | |
12594 | /* Short write. Save the rest of the read data for the next | |
12595 | write. */ | |
12596 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12597 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12598 | } |
12599 | ||
12600 | offset += retcode; | |
12601 | } | |
12602 | ||
6b8edb51 | 12603 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12604 | remote_hostio_error (remote_errno); |
12605 | ||
12606 | if (from_tty) | |
12607 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12608 | } |
12609 | ||
12610 | void | |
12611 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12612 | { |
12613 | remote_target *remote = get_current_remote_target (); | |
12614 | ||
12615 | if (remote == nullptr) | |
12616 | error (_("command can only be used with remote target")); | |
12617 | ||
12618 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12619 | } | |
12620 | ||
12621 | void | |
12622 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12623 | int from_tty) | |
a6b151f1 | 12624 | { |
440b7aec | 12625 | int remote_errno, bytes, io_size; |
a6b151f1 | 12626 | ULONGEST offset; |
a6b151f1 | 12627 | |
440b7aec | 12628 | scoped_remote_fd fd |
6b8edb51 PA |
12629 | (this, remote_hostio_open (NULL, |
12630 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12631 | &remote_errno)); | |
440b7aec | 12632 | if (fd.get () == -1) |
a6b151f1 DJ |
12633 | remote_hostio_error (remote_errno); |
12634 | ||
d419f42d | 12635 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12636 | if (file == NULL) |
12637 | perror_with_name (local_file); | |
a6b151f1 DJ |
12638 | |
12639 | /* Send up to this many bytes at once. They won't all fit in the | |
12640 | remote packet limit, so we'll transfer slightly fewer. */ | |
12641 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12642 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12643 | |
a6b151f1 DJ |
12644 | offset = 0; |
12645 | while (1) | |
12646 | { | |
5ca3b260 | 12647 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12648 | &remote_errno); |
a6b151f1 DJ |
12649 | if (bytes == 0) |
12650 | /* Success, but no bytes, means end-of-file. */ | |
12651 | break; | |
12652 | if (bytes == -1) | |
12653 | remote_hostio_error (remote_errno); | |
12654 | ||
12655 | offset += bytes; | |
12656 | ||
5ca3b260 | 12657 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12658 | if (bytes == 0) |
12659 | perror_with_name (local_file); | |
12660 | } | |
12661 | ||
6b8edb51 | 12662 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12663 | remote_hostio_error (remote_errno); |
12664 | ||
12665 | if (from_tty) | |
12666 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12667 | } |
12668 | ||
12669 | void | |
12670 | remote_file_delete (const char *remote_file, int from_tty) | |
12671 | { | |
6b8edb51 | 12672 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12673 | |
6b8edb51 | 12674 | if (remote == nullptr) |
a6b151f1 DJ |
12675 | error (_("command can only be used with remote target")); |
12676 | ||
6b8edb51 PA |
12677 | remote->remote_file_delete (remote_file, from_tty); |
12678 | } | |
12679 | ||
12680 | void | |
12681 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12682 | { | |
12683 | int retcode, remote_errno; | |
12684 | ||
12685 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12686 | if (retcode == -1) |
12687 | remote_hostio_error (remote_errno); | |
12688 | ||
12689 | if (from_tty) | |
12690 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12691 | } | |
12692 | ||
12693 | static void | |
ac88e2de | 12694 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12695 | { |
d1a41061 PP |
12696 | if (args == NULL) |
12697 | error_no_arg (_("file to put")); | |
12698 | ||
773a1edc | 12699 | gdb_argv argv (args); |
a6b151f1 DJ |
12700 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12701 | error (_("Invalid parameters to remote put")); | |
12702 | ||
12703 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12704 | } |
12705 | ||
12706 | static void | |
ac88e2de | 12707 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12708 | { |
d1a41061 PP |
12709 | if (args == NULL) |
12710 | error_no_arg (_("file to get")); | |
12711 | ||
773a1edc | 12712 | gdb_argv argv (args); |
a6b151f1 DJ |
12713 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12714 | error (_("Invalid parameters to remote get")); | |
12715 | ||
12716 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12717 | } |
12718 | ||
12719 | static void | |
ac88e2de | 12720 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12721 | { |
d1a41061 PP |
12722 | if (args == NULL) |
12723 | error_no_arg (_("file to delete")); | |
12724 | ||
773a1edc | 12725 | gdb_argv argv (args); |
a6b151f1 DJ |
12726 | if (argv[0] == NULL || argv[1] != NULL) |
12727 | error (_("Invalid parameters to remote delete")); | |
12728 | ||
12729 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12730 | } |
12731 | ||
57810aa7 | 12732 | bool |
f6ac5f3d | 12733 | remote_target::can_execute_reverse () |
b2175913 | 12734 | { |
4082afcc PA |
12735 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12736 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12737 | return true; |
40ab02ce | 12738 | else |
57810aa7 | 12739 | return false; |
b2175913 MS |
12740 | } |
12741 | ||
57810aa7 | 12742 | bool |
f6ac5f3d | 12743 | remote_target::supports_non_stop () |
74531fed | 12744 | { |
57810aa7 | 12745 | return true; |
74531fed PA |
12746 | } |
12747 | ||
57810aa7 | 12748 | bool |
f6ac5f3d | 12749 | remote_target::supports_disable_randomization () |
03583c20 UW |
12750 | { |
12751 | /* Only supported in extended mode. */ | |
57810aa7 | 12752 | return false; |
03583c20 UW |
12753 | } |
12754 | ||
57810aa7 | 12755 | bool |
f6ac5f3d | 12756 | remote_target::supports_multi_process () |
8a305172 PA |
12757 | { |
12758 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12759 | |
8020350c | 12760 | return remote_multi_process_p (rs); |
8a305172 PA |
12761 | } |
12762 | ||
70221824 | 12763 | static int |
f6ac5f3d | 12764 | remote_supports_cond_tracepoints () |
782b2b07 | 12765 | { |
4082afcc | 12766 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12767 | } |
12768 | ||
57810aa7 | 12769 | bool |
f6ac5f3d | 12770 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12771 | { |
4082afcc | 12772 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12773 | } |
12774 | ||
70221824 | 12775 | static int |
f6ac5f3d | 12776 | remote_supports_fast_tracepoints () |
7a697b8d | 12777 | { |
4082afcc | 12778 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12779 | } |
12780 | ||
0fb4aa4b | 12781 | static int |
f6ac5f3d | 12782 | remote_supports_static_tracepoints () |
0fb4aa4b | 12783 | { |
4082afcc | 12784 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12785 | } |
12786 | ||
1e4d1764 | 12787 | static int |
f6ac5f3d | 12788 | remote_supports_install_in_trace () |
1e4d1764 | 12789 | { |
4082afcc | 12790 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12791 | } |
12792 | ||
57810aa7 | 12793 | bool |
f6ac5f3d | 12794 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12795 | { |
4082afcc PA |
12796 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12797 | == PACKET_ENABLE); | |
d248b706 KY |
12798 | } |
12799 | ||
57810aa7 | 12800 | bool |
f6ac5f3d | 12801 | remote_target::supports_string_tracing () |
3065dfb6 | 12802 | { |
4082afcc | 12803 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12804 | } |
12805 | ||
57810aa7 | 12806 | bool |
f6ac5f3d | 12807 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12808 | { |
4082afcc | 12809 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12810 | } |
12811 | ||
f6ac5f3d PA |
12812 | void |
12813 | remote_target::trace_init () | |
35b1e5cc | 12814 | { |
b6bb3468 PA |
12815 | struct remote_state *rs = get_remote_state (); |
12816 | ||
35b1e5cc | 12817 | putpkt ("QTinit"); |
b6bb3468 | 12818 | remote_get_noisy_reply (); |
8d64371b | 12819 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
12820 | error (_("Target does not support this command.")); |
12821 | } | |
12822 | ||
409873ef SS |
12823 | /* Recursive routine to walk through command list including loops, and |
12824 | download packets for each command. */ | |
12825 | ||
6b8edb51 PA |
12826 | void |
12827 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
12828 | struct command_line *cmds) | |
409873ef SS |
12829 | { |
12830 | struct remote_state *rs = get_remote_state (); | |
12831 | struct command_line *cmd; | |
12832 | ||
12833 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12834 | { | |
0df8b418 | 12835 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12836 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12837 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
12838 | rs->buf.data () + strlen (rs->buf.data ()), |
12839 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12840 | putpkt (rs->buf); |
b6bb3468 | 12841 | remote_get_noisy_reply (); |
8d64371b | 12842 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12843 | warning (_("Target does not support source download.")); |
12844 | ||
12845 | if (cmd->control_type == while_control | |
12846 | || cmd->control_type == while_stepping_control) | |
12847 | { | |
12973681 | 12848 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12849 | |
0df8b418 | 12850 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12851 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12852 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
12853 | rs->buf.data () + strlen (rs->buf.data ()), |
12854 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12855 | putpkt (rs->buf); |
b6bb3468 | 12856 | remote_get_noisy_reply (); |
8d64371b | 12857 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12858 | warning (_("Target does not support source download.")); |
12859 | } | |
12860 | } | |
12861 | } | |
12862 | ||
f6ac5f3d PA |
12863 | void |
12864 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
12865 | { |
12866 | CORE_ADDR tpaddr; | |
409873ef | 12867 | char addrbuf[40]; |
b44ec619 SM |
12868 | std::vector<std::string> tdp_actions; |
12869 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12870 | char *pkt; |
e8ba3115 | 12871 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12872 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12873 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 12874 | int ret; |
ff36536c | 12875 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
12876 | size_t size_left; |
12877 | ||
12878 | /* We use a buffer other than rs->buf because we'll build strings | |
12879 | across multiple statements, and other statements in between could | |
12880 | modify rs->buf. */ | |
12881 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 12882 | |
dc673c81 | 12883 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12884 | |
12885 | tpaddr = loc->address; | |
53807e9f | 12886 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
12887 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
12888 | b->number, addrbuf, /* address */ | |
12889 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12890 | t->step_count, t->pass_count); | |
12891 | ||
12892 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12893 | error ("%s", err_msg); |
3df3a985 | 12894 | |
e8ba3115 YQ |
12895 | /* Fast tracepoints are mostly handled by the target, but we can |
12896 | tell the target how big of an instruction block should be moved | |
12897 | around. */ | |
12898 | if (b->type == bp_fast_tracepoint) | |
12899 | { | |
12900 | /* Only test for support at download time; we may not know | |
12901 | target capabilities at definition time. */ | |
12902 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12903 | { |
6b940e6a PL |
12904 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12905 | NULL)) | |
3df3a985 PFC |
12906 | { |
12907 | size_left = buf.size () - strlen (buf.data ()); | |
12908 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12909 | size_left, ":F%x", | |
12910 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
12911 | ||
12912 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12913 | error ("%s", err_msg); |
3df3a985 | 12914 | } |
35b1e5cc | 12915 | else |
e8ba3115 YQ |
12916 | /* If it passed validation at definition but fails now, |
12917 | something is very wrong. */ | |
12918 | internal_error (__FILE__, __LINE__, | |
12919 | _("Fast tracepoint not " | |
12920 | "valid during download")); | |
35b1e5cc | 12921 | } |
e8ba3115 YQ |
12922 | else |
12923 | /* Fast tracepoints are functionally identical to regular | |
12924 | tracepoints, so don't take lack of support as a reason to | |
12925 | give up on the trace run. */ | |
12926 | warning (_("Target does not support fast tracepoints, " | |
12927 | "downloading %d as regular tracepoint"), b->number); | |
12928 | } | |
12929 | else if (b->type == bp_static_tracepoint) | |
12930 | { | |
12931 | /* Only test for support at download time; we may not know | |
12932 | target capabilities at definition time. */ | |
12933 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12934 | { |
e8ba3115 | 12935 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12936 | |
e8ba3115 | 12937 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
12938 | { |
12939 | size_left = buf.size () - strlen (buf.data ()); | |
12940 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12941 | size_left, ":S"); | |
12942 | ||
12943 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12944 | error ("%s", err_msg); |
3df3a985 | 12945 | } |
0fb4aa4b | 12946 | else |
e8ba3115 | 12947 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12948 | } |
e8ba3115 YQ |
12949 | else |
12950 | /* Fast tracepoints are functionally identical to regular | |
12951 | tracepoints, so don't take lack of support as a reason | |
12952 | to give up on the trace run. */ | |
12953 | error (_("Target does not support static tracepoints")); | |
12954 | } | |
12955 | /* If the tracepoint has a conditional, make it into an agent | |
12956 | expression and append to the definition. */ | |
12957 | if (loc->cond) | |
12958 | { | |
12959 | /* Only test support at download time, we may not know target | |
12960 | capabilities at definition time. */ | |
12961 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12962 | { |
3df3a985 PFC |
12963 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
12964 | loc->cond.get ()); | |
12965 | ||
12966 | size_left = buf.size () - strlen (buf.data ()); | |
12967 | ||
12968 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12969 | size_left, ":X%x,", aexpr->len); | |
12970 | ||
12971 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12972 | error ("%s", err_msg); |
3df3a985 PFC |
12973 | |
12974 | size_left = buf.size () - strlen (buf.data ()); | |
12975 | ||
12976 | /* Two bytes to encode each aexpr byte, plus the terminating | |
12977 | null byte. */ | |
12978 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 12979 | error ("%s", err_msg); |
3df3a985 PFC |
12980 | |
12981 | pkt = buf.data () + strlen (buf.data ()); | |
12982 | ||
b44ec619 | 12983 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12984 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12985 | *pkt = '\0'; | |
35b1e5cc | 12986 | } |
e8ba3115 YQ |
12987 | else |
12988 | warning (_("Target does not support conditional tracepoints, " | |
12989 | "ignoring tp %d cond"), b->number); | |
12990 | } | |
35b1e5cc | 12991 | |
d9b3f62e | 12992 | if (b->commands || *default_collect) |
3df3a985 PFC |
12993 | { |
12994 | size_left = buf.size () - strlen (buf.data ()); | |
12995 | ||
12996 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12997 | size_left, "-"); | |
12998 | ||
12999 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13000 | error ("%s", err_msg); |
3df3a985 PFC |
13001 | } |
13002 | ||
13003 | putpkt (buf.data ()); | |
b6bb3468 | 13004 | remote_get_noisy_reply (); |
8d64371b | 13005 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13006 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13007 | |
e8ba3115 | 13008 | /* do_single_steps (t); */ |
b44ec619 SM |
13009 | for (auto action_it = tdp_actions.begin (); |
13010 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13011 | { |
b44ec619 SM |
13012 | QUIT; /* Allow user to bail out with ^C. */ |
13013 | ||
aa6f3694 | 13014 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13015 | || !stepping_actions.empty ()); |
13016 | ||
3df3a985 PFC |
13017 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13018 | b->number, addrbuf, /* address */ | |
13019 | action_it->c_str (), | |
13020 | has_more ? '-' : 0); | |
13021 | ||
13022 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13023 | error ("%s", err_msg); |
3df3a985 PFC |
13024 | |
13025 | putpkt (buf.data ()); | |
b44ec619 | 13026 | remote_get_noisy_reply (); |
8d64371b | 13027 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13028 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13029 | } |
409873ef | 13030 | |
05abfc39 PFC |
13031 | for (auto action_it = stepping_actions.begin (); |
13032 | action_it != stepping_actions.end (); action_it++) | |
13033 | { | |
13034 | QUIT; /* Allow user to bail out with ^C. */ | |
13035 | ||
13036 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13037 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13038 | |
3df3a985 PFC |
13039 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13040 | b->number, addrbuf, /* address */ | |
13041 | is_first ? "S" : "", | |
13042 | action_it->c_str (), | |
13043 | has_more ? "-" : ""); | |
13044 | ||
13045 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13046 | error ("%s", err_msg); |
3df3a985 PFC |
13047 | |
13048 | putpkt (buf.data ()); | |
05abfc39 | 13049 | remote_get_noisy_reply (); |
8d64371b | 13050 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13051 | error (_("Error on target while setting tracepoints.")); |
13052 | } | |
b44ec619 | 13053 | |
4082afcc | 13054 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13055 | { |
f00aae0f | 13056 | if (b->location != NULL) |
409873ef | 13057 | { |
3df3a985 PFC |
13058 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13059 | ||
13060 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13061 | error ("%s", err_msg); |
3df3a985 | 13062 | |
f00aae0f | 13063 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 13064 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
13065 | buf.data () + strlen (buf.data ()), |
13066 | buf.size () - strlen (buf.data ())); | |
13067 | putpkt (buf.data ()); | |
b6bb3468 | 13068 | remote_get_noisy_reply (); |
8d64371b | 13069 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13070 | warning (_("Target does not support source download.")); |
409873ef | 13071 | } |
e8ba3115 YQ |
13072 | if (b->cond_string) |
13073 | { | |
3df3a985 PFC |
13074 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13075 | ||
13076 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13077 | error ("%s", err_msg); |
3df3a985 | 13078 | |
e8ba3115 | 13079 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
13080 | "cond", b->cond_string, |
13081 | buf.data () + strlen (buf.data ()), | |
13082 | buf.size () - strlen (buf.data ())); | |
13083 | putpkt (buf.data ()); | |
b6bb3468 | 13084 | remote_get_noisy_reply (); |
8d64371b | 13085 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13086 | warning (_("Target does not support source download.")); |
13087 | } | |
13088 | remote_download_command_source (b->number, loc->address, | |
13089 | breakpoint_commands (b)); | |
35b1e5cc | 13090 | } |
35b1e5cc SS |
13091 | } |
13092 | ||
57810aa7 | 13093 | bool |
f6ac5f3d | 13094 | remote_target::can_download_tracepoint () |
1e4d1764 | 13095 | { |
1e51243a PA |
13096 | struct remote_state *rs = get_remote_state (); |
13097 | struct trace_status *ts; | |
13098 | int status; | |
13099 | ||
13100 | /* Don't try to install tracepoints until we've relocated our | |
13101 | symbols, and fetched and merged the target's tracepoint list with | |
13102 | ours. */ | |
13103 | if (rs->starting_up) | |
57810aa7 | 13104 | return false; |
1e51243a PA |
13105 | |
13106 | ts = current_trace_status (); | |
f6ac5f3d | 13107 | status = get_trace_status (ts); |
1e4d1764 YQ |
13108 | |
13109 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13110 | return false; |
1e4d1764 YQ |
13111 | |
13112 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13113 | installing tracepoint in trace, we have to return. */ | |
13114 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13115 | return false; |
1e4d1764 | 13116 | |
57810aa7 | 13117 | return true; |
1e4d1764 YQ |
13118 | } |
13119 | ||
13120 | ||
f6ac5f3d PA |
13121 | void |
13122 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13123 | { |
13124 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13125 | char *p; |
35b1e5cc | 13126 | |
8d64371b | 13127 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13128 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13129 | tsv.builtin); | |
8d64371b TT |
13130 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13131 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13132 | >= get_remote_packet_size ()) | |
00bf0b85 | 13133 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13134 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13135 | *p++ = '\0'; |
35b1e5cc | 13136 | putpkt (rs->buf); |
b6bb3468 | 13137 | remote_get_noisy_reply (); |
8d64371b | 13138 | if (rs->buf[0] == '\0') |
ad91cd99 | 13139 | error (_("Target does not support this command.")); |
8d64371b | 13140 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13141 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13142 | } |
13143 | ||
f6ac5f3d PA |
13144 | void |
13145 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13146 | { |
13147 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13148 | |
8d64371b | 13149 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13150 | location->owner->number, |
13151 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13152 | putpkt (rs->buf); |
b6bb3468 | 13153 | remote_get_noisy_reply (); |
8d64371b | 13154 | if (rs->buf[0] == '\0') |
d248b706 | 13155 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13156 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13157 | error (_("Error on target while enabling tracepoint.")); |
13158 | } | |
13159 | ||
f6ac5f3d PA |
13160 | void |
13161 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13162 | { |
13163 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13164 | |
8d64371b | 13165 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13166 | location->owner->number, |
13167 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13168 | putpkt (rs->buf); |
b6bb3468 | 13169 | remote_get_noisy_reply (); |
8d64371b | 13170 | if (rs->buf[0] == '\0') |
d248b706 | 13171 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13172 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13173 | error (_("Error on target while disabling tracepoint.")); |
13174 | } | |
13175 | ||
f6ac5f3d PA |
13176 | void |
13177 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13178 | { |
13179 | asection *s; | |
13180 | bfd_size_type size; | |
608bcef2 | 13181 | bfd_vma vma; |
35b1e5cc | 13182 | int anysecs = 0; |
c2fa21f1 | 13183 | int offset = 0; |
35b1e5cc | 13184 | |
7e10abd1 | 13185 | if (!current_program_space->exec_bfd ()) |
35b1e5cc SS |
13186 | return; /* No information to give. */ |
13187 | ||
b6bb3468 PA |
13188 | struct remote_state *rs = get_remote_state (); |
13189 | ||
8d64371b TT |
13190 | strcpy (rs->buf.data (), "QTro"); |
13191 | offset = strlen (rs->buf.data ()); | |
7e10abd1 | 13192 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
35b1e5cc SS |
13193 | { |
13194 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13195 | int sec_length; |
35b1e5cc SS |
13196 | |
13197 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13198 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13199 | (s->flags & SEC_READONLY) == 0) |
13200 | continue; | |
13201 | ||
13202 | anysecs = 1; | |
fd361982 AM |
13203 | vma = bfd_section_vma (s); |
13204 | size = bfd_section_size (s); | |
608bcef2 HZ |
13205 | sprintf_vma (tmp1, vma); |
13206 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13207 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13208 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13209 | { |
4082afcc | 13210 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13211 | warning (_("\ |
c2fa21f1 HZ |
13212 | Too many sections for read-only sections definition packet.")); |
13213 | break; | |
13214 | } | |
8d64371b | 13215 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13216 | tmp1, tmp2); |
c2fa21f1 | 13217 | offset += sec_length; |
35b1e5cc SS |
13218 | } |
13219 | if (anysecs) | |
13220 | { | |
b6bb3468 | 13221 | putpkt (rs->buf); |
8d64371b | 13222 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13223 | } |
13224 | } | |
13225 | ||
f6ac5f3d PA |
13226 | void |
13227 | remote_target::trace_start () | |
35b1e5cc | 13228 | { |
b6bb3468 PA |
13229 | struct remote_state *rs = get_remote_state (); |
13230 | ||
35b1e5cc | 13231 | putpkt ("QTStart"); |
b6bb3468 | 13232 | remote_get_noisy_reply (); |
8d64371b | 13233 | if (rs->buf[0] == '\0') |
ad91cd99 | 13234 | error (_("Target does not support this command.")); |
8d64371b TT |
13235 | if (strcmp (rs->buf.data (), "OK") != 0) |
13236 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13237 | } |
13238 | ||
f6ac5f3d PA |
13239 | int |
13240 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13241 | { |
953b98d1 | 13242 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13243 | char *p = NULL; |
bd3eecc3 | 13244 | enum packet_result result; |
b6bb3468 | 13245 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13246 | |
4082afcc | 13247 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13248 | return -1; |
a744cf53 | 13249 | |
7b9a15e1 | 13250 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13251 | trace_regblock_size |
9d6eea31 | 13252 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13253 | |
049dc89b JK |
13254 | putpkt ("qTStatus"); |
13255 | ||
a70b8144 | 13256 | try |
67f41397 | 13257 | { |
b6bb3468 | 13258 | p = remote_get_noisy_reply (); |
67f41397 | 13259 | } |
230d2906 | 13260 | catch (const gdb_exception_error &ex) |
67f41397 | 13261 | { |
598d3636 JK |
13262 | if (ex.error != TARGET_CLOSE_ERROR) |
13263 | { | |
13264 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13265 | return -1; | |
13266 | } | |
eedc3f4f | 13267 | throw; |
67f41397 | 13268 | } |
00bf0b85 | 13269 | |
bd3eecc3 PA |
13270 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13271 | ||
00bf0b85 | 13272 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13273 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13274 | return -1; |
35b1e5cc | 13275 | |
00bf0b85 | 13276 | /* We're working with a live target. */ |
f5911ea1 | 13277 | ts->filename = NULL; |
00bf0b85 | 13278 | |
00bf0b85 | 13279 | if (*p++ != 'T') |
8d64371b | 13280 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13281 | |
84cebc4a YQ |
13282 | /* Function 'parse_trace_status' sets default value of each field of |
13283 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13284 | parse_trace_status (p, ts); |
13285 | ||
13286 | return ts->running; | |
35b1e5cc SS |
13287 | } |
13288 | ||
f6ac5f3d PA |
13289 | void |
13290 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13291 | struct uploaded_tp *utp) | |
f196051f SS |
13292 | { |
13293 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13294 | char *reply; |
13295 | struct bp_location *loc; | |
13296 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13297 | size_t size = get_remote_packet_size (); |
f196051f SS |
13298 | |
13299 | if (tp) | |
13300 | { | |
c1fc2657 | 13301 | tp->hit_count = 0; |
f196051f | 13302 | tp->traceframe_usage = 0; |
c1fc2657 | 13303 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13304 | { |
13305 | /* If the tracepoint was never downloaded, don't go asking for | |
13306 | any status. */ | |
13307 | if (tp->number_on_target == 0) | |
13308 | continue; | |
8d64371b | 13309 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13310 | phex_nz (loc->address, 0)); |
f196051f | 13311 | putpkt (rs->buf); |
b6bb3468 | 13312 | reply = remote_get_noisy_reply (); |
f196051f SS |
13313 | if (reply && *reply) |
13314 | { | |
13315 | if (*reply == 'V') | |
13316 | parse_tracepoint_status (reply + 1, bp, utp); | |
13317 | } | |
13318 | } | |
13319 | } | |
13320 | else if (utp) | |
13321 | { | |
13322 | utp->hit_count = 0; | |
13323 | utp->traceframe_usage = 0; | |
8d64371b | 13324 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13325 | phex_nz (utp->addr, 0)); |
f196051f | 13326 | putpkt (rs->buf); |
b6bb3468 | 13327 | reply = remote_get_noisy_reply (); |
f196051f SS |
13328 | if (reply && *reply) |
13329 | { | |
13330 | if (*reply == 'V') | |
13331 | parse_tracepoint_status (reply + 1, bp, utp); | |
13332 | } | |
13333 | } | |
13334 | } | |
13335 | ||
f6ac5f3d PA |
13336 | void |
13337 | remote_target::trace_stop () | |
35b1e5cc | 13338 | { |
b6bb3468 PA |
13339 | struct remote_state *rs = get_remote_state (); |
13340 | ||
35b1e5cc | 13341 | putpkt ("QTStop"); |
b6bb3468 | 13342 | remote_get_noisy_reply (); |
8d64371b | 13343 | if (rs->buf[0] == '\0') |
ad91cd99 | 13344 | error (_("Target does not support this command.")); |
8d64371b TT |
13345 | if (strcmp (rs->buf.data (), "OK") != 0) |
13346 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13347 | } |
13348 | ||
f6ac5f3d PA |
13349 | int |
13350 | remote_target::trace_find (enum trace_find_type type, int num, | |
13351 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13352 | int *tpp) | |
35b1e5cc SS |
13353 | { |
13354 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13355 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13356 | char *p, *reply; |
13357 | int target_frameno = -1, target_tracept = -1; | |
13358 | ||
e6e4e701 PA |
13359 | /* Lookups other than by absolute frame number depend on the current |
13360 | trace selected, so make sure it is correct on the remote end | |
13361 | first. */ | |
13362 | if (type != tfind_number) | |
13363 | set_remote_traceframe (); | |
13364 | ||
8d64371b | 13365 | p = rs->buf.data (); |
35b1e5cc SS |
13366 | strcpy (p, "QTFrame:"); |
13367 | p = strchr (p, '\0'); | |
13368 | switch (type) | |
13369 | { | |
13370 | case tfind_number: | |
bba74b36 | 13371 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13372 | break; |
13373 | case tfind_pc: | |
bba74b36 | 13374 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13375 | break; |
13376 | case tfind_tp: | |
bba74b36 | 13377 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13378 | break; |
13379 | case tfind_range: | |
bba74b36 YQ |
13380 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13381 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13382 | break; |
13383 | case tfind_outside: | |
bba74b36 YQ |
13384 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13385 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13386 | break; |
13387 | default: | |
9b20d036 | 13388 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13389 | } |
13390 | ||
13391 | putpkt (rs->buf); | |
b6bb3468 | 13392 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13393 | if (*reply == '\0') |
13394 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13395 | |
13396 | while (reply && *reply) | |
13397 | switch (*reply) | |
13398 | { | |
13399 | case 'F': | |
f197e0f1 VP |
13400 | p = ++reply; |
13401 | target_frameno = (int) strtol (p, &reply, 16); | |
13402 | if (reply == p) | |
13403 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13404 | /* Don't update our remote traceframe number cache on failure |
13405 | to select a remote traceframe. */ | |
f197e0f1 VP |
13406 | if (target_frameno == -1) |
13407 | return -1; | |
35b1e5cc SS |
13408 | break; |
13409 | case 'T': | |
f197e0f1 VP |
13410 | p = ++reply; |
13411 | target_tracept = (int) strtol (p, &reply, 16); | |
13412 | if (reply == p) | |
13413 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13414 | break; |
13415 | case 'O': /* "OK"? */ | |
13416 | if (reply[1] == 'K' && reply[2] == '\0') | |
13417 | reply += 2; | |
13418 | else | |
13419 | error (_("Bogus reply from target: %s"), reply); | |
13420 | break; | |
13421 | default: | |
13422 | error (_("Bogus reply from target: %s"), reply); | |
13423 | } | |
13424 | if (tpp) | |
13425 | *tpp = target_tracept; | |
e6e4e701 | 13426 | |
262e1174 | 13427 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13428 | return target_frameno; |
13429 | } | |
13430 | ||
57810aa7 | 13431 | bool |
f6ac5f3d | 13432 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13433 | { |
13434 | struct remote_state *rs = get_remote_state (); | |
13435 | char *reply; | |
13436 | ULONGEST uval; | |
13437 | ||
e6e4e701 PA |
13438 | set_remote_traceframe (); |
13439 | ||
8d64371b | 13440 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13441 | putpkt (rs->buf); |
b6bb3468 | 13442 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13443 | if (reply && *reply) |
13444 | { | |
13445 | if (*reply == 'V') | |
13446 | { | |
13447 | unpack_varlen_hex (reply + 1, &uval); | |
13448 | *val = (LONGEST) uval; | |
57810aa7 | 13449 | return true; |
35b1e5cc SS |
13450 | } |
13451 | } | |
57810aa7 | 13452 | return false; |
35b1e5cc SS |
13453 | } |
13454 | ||
f6ac5f3d PA |
13455 | int |
13456 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13457 | { |
13458 | struct remote_state *rs = get_remote_state (); | |
13459 | char *p, *reply; | |
13460 | ||
8d64371b | 13461 | p = rs->buf.data (); |
00bf0b85 SS |
13462 | strcpy (p, "QTSave:"); |
13463 | p += strlen (p); | |
8d64371b TT |
13464 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13465 | >= get_remote_packet_size ()) | |
00bf0b85 | 13466 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13467 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13468 | *p++ = '\0'; |
13469 | putpkt (rs->buf); | |
b6bb3468 | 13470 | reply = remote_get_noisy_reply (); |
d6c5869f | 13471 | if (*reply == '\0') |
ad91cd99 PA |
13472 | error (_("Target does not support this command.")); |
13473 | if (strcmp (reply, "OK") != 0) | |
13474 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13475 | return 0; |
13476 | } | |
13477 | ||
13478 | /* This is basically a memory transfer, but needs to be its own packet | |
13479 | because we don't know how the target actually organizes its trace | |
13480 | memory, plus we want to be able to ask for as much as possible, but | |
13481 | not be unhappy if we don't get as much as we ask for. */ | |
13482 | ||
f6ac5f3d PA |
13483 | LONGEST |
13484 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13485 | { |
13486 | struct remote_state *rs = get_remote_state (); | |
13487 | char *reply; | |
13488 | char *p; | |
13489 | int rslt; | |
13490 | ||
8d64371b | 13491 | p = rs->buf.data (); |
00bf0b85 SS |
13492 | strcpy (p, "qTBuffer:"); |
13493 | p += strlen (p); | |
13494 | p += hexnumstr (p, offset); | |
13495 | *p++ = ','; | |
13496 | p += hexnumstr (p, len); | |
13497 | *p++ = '\0'; | |
13498 | ||
13499 | putpkt (rs->buf); | |
b6bb3468 | 13500 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13501 | if (reply && *reply) |
13502 | { | |
13503 | /* 'l' by itself means we're at the end of the buffer and | |
13504 | there is nothing more to get. */ | |
13505 | if (*reply == 'l') | |
13506 | return 0; | |
13507 | ||
13508 | /* Convert the reply into binary. Limit the number of bytes to | |
13509 | convert according to our passed-in buffer size, rather than | |
13510 | what was returned in the packet; if the target is | |
13511 | unexpectedly generous and gives us a bigger reply than we | |
13512 | asked for, we don't want to crash. */ | |
b6bb3468 | 13513 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13514 | return rslt; |
13515 | } | |
13516 | ||
13517 | /* Something went wrong, flag as an error. */ | |
13518 | return -1; | |
13519 | } | |
13520 | ||
f6ac5f3d PA |
13521 | void |
13522 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13523 | { |
13524 | struct remote_state *rs = get_remote_state (); | |
13525 | ||
4082afcc | 13526 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13527 | { |
ad91cd99 PA |
13528 | char *reply; |
13529 | ||
8d64371b TT |
13530 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13531 | "QTDisconnected:%x", val); | |
33da3f1c | 13532 | putpkt (rs->buf); |
b6bb3468 | 13533 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13534 | if (*reply == '\0') |
33da3f1c | 13535 | error (_("Target does not support this command.")); |
ad91cd99 | 13536 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13537 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13538 | } |
13539 | else if (val) | |
13540 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13541 | } |
13542 | ||
f6ac5f3d PA |
13543 | int |
13544 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13545 | { |
5b6d1e4f | 13546 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13547 | |
7aabaf9d SM |
13548 | if (info != NULL && info->priv != NULL) |
13549 | return get_remote_thread_info (info)->core; | |
13550 | ||
dc146f7c VP |
13551 | return -1; |
13552 | } | |
13553 | ||
f6ac5f3d PA |
13554 | void |
13555 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13556 | { |
13557 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13558 | char *reply; |
4daf5ac0 | 13559 | |
8d64371b TT |
13560 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13561 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13562 | putpkt (rs->buf); |
b6bb3468 | 13563 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13564 | if (*reply == '\0') |
4daf5ac0 | 13565 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13566 | if (strcmp (reply, "OK") != 0) |
13567 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13568 | } |
13569 | ||
f6ac5f3d PA |
13570 | traceframe_info_up |
13571 | remote_target::traceframe_info () | |
b3b9301e | 13572 | { |
9018be22 | 13573 | gdb::optional<gdb::char_vector> text |
8b88a78e | 13574 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13575 | NULL); |
9018be22 SM |
13576 | if (text) |
13577 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13578 | |
13579 | return NULL; | |
13580 | } | |
13581 | ||
405f8e94 SS |
13582 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13583 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13584 | if the packet is not supported, and 0 if the minimum instruction | |
13585 | length is unknown. */ | |
13586 | ||
f6ac5f3d PA |
13587 | int |
13588 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13589 | { |
13590 | struct remote_state *rs = get_remote_state (); | |
13591 | char *reply; | |
13592 | ||
e886a173 PA |
13593 | /* If we're not debugging a process yet, the IPA can't be |
13594 | loaded. */ | |
55f6301a | 13595 | if (!target_has_execution ()) |
e886a173 PA |
13596 | return 0; |
13597 | ||
13598 | /* Make sure the remote is pointing at the right process. */ | |
13599 | set_general_process (); | |
13600 | ||
8d64371b | 13601 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13602 | putpkt (rs->buf); |
b6bb3468 | 13603 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13604 | if (*reply == '\0') |
13605 | return -1; | |
13606 | else | |
13607 | { | |
13608 | ULONGEST min_insn_len; | |
13609 | ||
13610 | unpack_varlen_hex (reply, &min_insn_len); | |
13611 | ||
13612 | return (int) min_insn_len; | |
13613 | } | |
13614 | } | |
13615 | ||
f6ac5f3d PA |
13616 | void |
13617 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13618 | { |
4082afcc | 13619 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13620 | { |
13621 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13622 | char *buf = rs->buf.data (); |
13623 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13624 | enum packet_result result; |
13625 | ||
13626 | gdb_assert (val >= 0 || val == -1); | |
13627 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13628 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13629 | if (val < 0) | |
13630 | { | |
13631 | *buf++ = '-'; | |
dda83cd7 | 13632 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
13633 | } |
13634 | else | |
13635 | buf += hexnumstr (buf, (ULONGEST) val); | |
13636 | ||
13637 | putpkt (rs->buf); | |
b6bb3468 | 13638 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13639 | result = packet_ok (rs->buf, |
13640 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13641 | ||
13642 | if (result != PACKET_OK) | |
8d64371b | 13643 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13644 | } |
13645 | } | |
13646 | ||
57810aa7 | 13647 | bool |
f6ac5f3d PA |
13648 | remote_target::set_trace_notes (const char *user, const char *notes, |
13649 | const char *stop_notes) | |
f196051f SS |
13650 | { |
13651 | struct remote_state *rs = get_remote_state (); | |
13652 | char *reply; | |
8d64371b TT |
13653 | char *buf = rs->buf.data (); |
13654 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13655 | int nbytes; |
13656 | ||
13657 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13658 | if (user) | |
13659 | { | |
13660 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13661 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13662 | buf += 2 * nbytes; |
13663 | *buf++ = ';'; | |
13664 | } | |
13665 | if (notes) | |
13666 | { | |
13667 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13668 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13669 | buf += 2 * nbytes; |
13670 | *buf++ = ';'; | |
13671 | } | |
13672 | if (stop_notes) | |
13673 | { | |
13674 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13675 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13676 | buf += 2 * nbytes; |
13677 | *buf++ = ';'; | |
13678 | } | |
13679 | /* Ensure the buffer is terminated. */ | |
13680 | *buf = '\0'; | |
13681 | ||
13682 | putpkt (rs->buf); | |
b6bb3468 | 13683 | reply = remote_get_noisy_reply (); |
f196051f | 13684 | if (*reply == '\0') |
57810aa7 | 13685 | return false; |
f196051f SS |
13686 | |
13687 | if (strcmp (reply, "OK") != 0) | |
13688 | error (_("Bogus reply from target: %s"), reply); | |
13689 | ||
57810aa7 | 13690 | return true; |
f196051f SS |
13691 | } |
13692 | ||
57810aa7 PA |
13693 | bool |
13694 | remote_target::use_agent (bool use) | |
d1feda86 | 13695 | { |
4082afcc | 13696 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13697 | { |
13698 | struct remote_state *rs = get_remote_state (); | |
13699 | ||
13700 | /* If the stub supports QAgent. */ | |
8d64371b | 13701 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13702 | putpkt (rs->buf); |
8d64371b | 13703 | getpkt (&rs->buf, 0); |
d1feda86 | 13704 | |
8d64371b | 13705 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13706 | { |
f6ac5f3d | 13707 | ::use_agent = use; |
57810aa7 | 13708 | return true; |
d1feda86 YQ |
13709 | } |
13710 | } | |
13711 | ||
57810aa7 | 13712 | return false; |
d1feda86 YQ |
13713 | } |
13714 | ||
57810aa7 | 13715 | bool |
f6ac5f3d | 13716 | remote_target::can_use_agent () |
d1feda86 | 13717 | { |
4082afcc | 13718 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13719 | } |
13720 | ||
9accd112 MM |
13721 | struct btrace_target_info |
13722 | { | |
13723 | /* The ptid of the traced thread. */ | |
13724 | ptid_t ptid; | |
f4abbc16 MM |
13725 | |
13726 | /* The obtained branch trace configuration. */ | |
13727 | struct btrace_config conf; | |
9accd112 MM |
13728 | }; |
13729 | ||
f4abbc16 MM |
13730 | /* Reset our idea of our target's btrace configuration. */ |
13731 | ||
13732 | static void | |
6b8edb51 | 13733 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13734 | { |
f4abbc16 MM |
13735 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13736 | } | |
13737 | ||
f4abbc16 MM |
13738 | /* Synchronize the configuration with the target. */ |
13739 | ||
6b8edb51 PA |
13740 | void |
13741 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13742 | { |
d33501a5 MM |
13743 | struct packet_config *packet; |
13744 | struct remote_state *rs; | |
13745 | char *buf, *pos, *endbuf; | |
13746 | ||
13747 | rs = get_remote_state (); | |
8d64371b | 13748 | buf = rs->buf.data (); |
d33501a5 MM |
13749 | endbuf = buf + get_remote_packet_size (); |
13750 | ||
13751 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13752 | if (packet_config_support (packet) == PACKET_ENABLE | |
13753 | && conf->bts.size != rs->btrace_config.bts.size) | |
13754 | { | |
13755 | pos = buf; | |
13756 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 13757 | conf->bts.size); |
d33501a5 MM |
13758 | |
13759 | putpkt (buf); | |
8d64371b | 13760 | getpkt (&rs->buf, 0); |
d33501a5 MM |
13761 | |
13762 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13763 | { | |
13764 | if (buf[0] == 'E' && buf[1] == '.') | |
13765 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13766 | else | |
13767 | error (_("Failed to configure the BTS buffer size.")); | |
13768 | } | |
13769 | ||
13770 | rs->btrace_config.bts.size = conf->bts.size; | |
13771 | } | |
b20a6524 MM |
13772 | |
13773 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13774 | if (packet_config_support (packet) == PACKET_ENABLE | |
13775 | && conf->pt.size != rs->btrace_config.pt.size) | |
13776 | { | |
13777 | pos = buf; | |
13778 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 13779 | conf->pt.size); |
b20a6524 MM |
13780 | |
13781 | putpkt (buf); | |
8d64371b | 13782 | getpkt (&rs->buf, 0); |
b20a6524 MM |
13783 | |
13784 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13785 | { | |
13786 | if (buf[0] == 'E' && buf[1] == '.') | |
13787 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13788 | else | |
13789 | error (_("Failed to configure the trace buffer size.")); | |
13790 | } | |
13791 | ||
13792 | rs->btrace_config.pt.size = conf->pt.size; | |
13793 | } | |
f4abbc16 MM |
13794 | } |
13795 | ||
13796 | /* Read the current thread's btrace configuration from the target and | |
13797 | store it into CONF. */ | |
13798 | ||
13799 | static void | |
13800 | btrace_read_config (struct btrace_config *conf) | |
13801 | { | |
9018be22 | 13802 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13803 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13804 | if (xml) |
13805 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13806 | } |
13807 | ||
c0272db5 TW |
13808 | /* Maybe reopen target btrace. */ |
13809 | ||
6b8edb51 PA |
13810 | void |
13811 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
13812 | { |
13813 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 13814 | int btrace_target_pushed = 0; |
15766370 | 13815 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 13816 | int warned = 0; |
15766370 | 13817 | #endif |
c0272db5 | 13818 | |
aedbe3bb CM |
13819 | /* Don't bother walking the entirety of the remote thread list when |
13820 | we know the feature isn't supported by the remote. */ | |
13821 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
13822 | return; | |
13823 | ||
5ed8105e PA |
13824 | scoped_restore_current_thread restore_thread; |
13825 | ||
5b6d1e4f | 13826 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 TW |
13827 | { |
13828 | set_general_thread (tp->ptid); | |
13829 | ||
13830 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13831 | btrace_read_config (&rs->btrace_config); | |
13832 | ||
13833 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13834 | continue; | |
13835 | ||
13836 | #if !defined (HAVE_LIBIPT) | |
13837 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13838 | { | |
13839 | if (!warned) | |
13840 | { | |
13841 | warned = 1; | |
c4e12631 MM |
13842 | warning (_("Target is recording using Intel Processor Trace " |
13843 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13844 | } |
13845 | ||
13846 | continue; | |
13847 | } | |
13848 | #endif /* !defined (HAVE_LIBIPT) */ | |
13849 | ||
13850 | /* Push target, once, but before anything else happens. This way our | |
13851 | changes to the threads will be cleaned up by unpushing the target | |
13852 | in case btrace_read_config () throws. */ | |
13853 | if (!btrace_target_pushed) | |
13854 | { | |
13855 | btrace_target_pushed = 1; | |
13856 | record_btrace_push_target (); | |
13857 | printf_filtered (_("Target is recording using %s.\n"), | |
13858 | btrace_format_string (rs->btrace_config.format)); | |
13859 | } | |
13860 | ||
13861 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13862 | tp->btrace.target->ptid = tp->ptid; | |
13863 | tp->btrace.target->conf = rs->btrace_config; | |
13864 | } | |
c0272db5 TW |
13865 | } |
13866 | ||
9accd112 MM |
13867 | /* Enable branch tracing. */ |
13868 | ||
f6ac5f3d PA |
13869 | struct btrace_target_info * |
13870 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13871 | { |
13872 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13873 | struct packet_config *packet = NULL; |
9accd112 | 13874 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
13875 | char *buf = rs->buf.data (); |
13876 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13877 | |
b20a6524 MM |
13878 | switch (conf->format) |
13879 | { | |
13880 | case BTRACE_FORMAT_BTS: | |
13881 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13882 | break; | |
13883 | ||
13884 | case BTRACE_FORMAT_PT: | |
13885 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13886 | break; | |
13887 | } | |
13888 | ||
13889 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13890 | error (_("Target does not support branch tracing.")); |
13891 | ||
f4abbc16 MM |
13892 | btrace_sync_conf (conf); |
13893 | ||
9accd112 MM |
13894 | set_general_thread (ptid); |
13895 | ||
13896 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13897 | putpkt (rs->buf); | |
8d64371b | 13898 | getpkt (&rs->buf, 0); |
9accd112 MM |
13899 | |
13900 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13901 | { | |
13902 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13903 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 13904 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
13905 | else |
13906 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 13907 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
13908 | } |
13909 | ||
8d749320 | 13910 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13911 | tinfo->ptid = ptid; |
13912 | ||
f4abbc16 MM |
13913 | /* If we fail to read the configuration, we lose some information, but the |
13914 | tracing itself is not impacted. */ | |
a70b8144 | 13915 | try |
492d29ea PA |
13916 | { |
13917 | btrace_read_config (&tinfo->conf); | |
13918 | } | |
230d2906 | 13919 | catch (const gdb_exception_error &err) |
492d29ea PA |
13920 | { |
13921 | if (err.message != NULL) | |
3d6e9d23 | 13922 | warning ("%s", err.what ()); |
492d29ea | 13923 | } |
f4abbc16 | 13924 | |
9accd112 MM |
13925 | return tinfo; |
13926 | } | |
13927 | ||
13928 | /* Disable branch tracing. */ | |
13929 | ||
f6ac5f3d PA |
13930 | void |
13931 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13932 | { |
13933 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13934 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13935 | char *buf = rs->buf.data (); |
13936 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13937 | |
4082afcc | 13938 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13939 | error (_("Target does not support branch tracing.")); |
13940 | ||
13941 | set_general_thread (tinfo->ptid); | |
13942 | ||
13943 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13944 | putpkt (rs->buf); | |
8d64371b | 13945 | getpkt (&rs->buf, 0); |
9accd112 MM |
13946 | |
13947 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13948 | { | |
13949 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13950 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 13951 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
13952 | else |
13953 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 13954 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
13955 | } |
13956 | ||
13957 | xfree (tinfo); | |
13958 | } | |
13959 | ||
13960 | /* Teardown branch tracing. */ | |
13961 | ||
f6ac5f3d PA |
13962 | void |
13963 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13964 | { |
13965 | /* We must not talk to the target during teardown. */ | |
13966 | xfree (tinfo); | |
13967 | } | |
13968 | ||
13969 | /* Read the branch trace. */ | |
13970 | ||
f6ac5f3d PA |
13971 | enum btrace_error |
13972 | remote_target::read_btrace (struct btrace_data *btrace, | |
13973 | struct btrace_target_info *tinfo, | |
13974 | enum btrace_read_type type) | |
9accd112 MM |
13975 | { |
13976 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13977 | const char *annex; |
9accd112 | 13978 | |
4082afcc | 13979 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13980 | error (_("Target does not support branch tracing.")); |
13981 | ||
13982 | #if !defined(HAVE_LIBEXPAT) | |
13983 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13984 | #endif | |
13985 | ||
13986 | switch (type) | |
13987 | { | |
864089d2 | 13988 | case BTRACE_READ_ALL: |
9accd112 MM |
13989 | annex = "all"; |
13990 | break; | |
864089d2 | 13991 | case BTRACE_READ_NEW: |
9accd112 MM |
13992 | annex = "new"; |
13993 | break; | |
969c39fb MM |
13994 | case BTRACE_READ_DELTA: |
13995 | annex = "delta"; | |
13996 | break; | |
9accd112 MM |
13997 | default: |
13998 | internal_error (__FILE__, __LINE__, | |
13999 | _("Bad branch tracing read type: %u."), | |
14000 | (unsigned int) type); | |
14001 | } | |
14002 | ||
9018be22 | 14003 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 14004 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex); |
9018be22 | 14005 | if (!xml) |
969c39fb | 14006 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14007 | |
9018be22 | 14008 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14009 | |
969c39fb | 14010 | return BTRACE_ERR_NONE; |
9accd112 MM |
14011 | } |
14012 | ||
f6ac5f3d PA |
14013 | const struct btrace_config * |
14014 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14015 | { |
14016 | return &tinfo->conf; | |
14017 | } | |
14018 | ||
57810aa7 | 14019 | bool |
f6ac5f3d | 14020 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14021 | { |
4082afcc PA |
14022 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
14023 | == PACKET_ENABLE); | |
ced63ec0 GB |
14024 | } |
14025 | ||
9dd130a0 TT |
14026 | /* Implementation of to_load. */ |
14027 | ||
f6ac5f3d PA |
14028 | void |
14029 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14030 | { |
14031 | generic_load (name, from_tty); | |
14032 | } | |
14033 | ||
c78fa86a GB |
14034 | /* Accepts an integer PID; returns a string representing a file that |
14035 | can be opened on the remote side to get the symbols for the child | |
14036 | process. Returns NULL if the operation is not supported. */ | |
14037 | ||
f6ac5f3d PA |
14038 | char * |
14039 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 14040 | { |
9018be22 | 14041 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14042 | char *annex = NULL; |
c78fa86a GB |
14043 | |
14044 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
14045 | return NULL; | |
14046 | ||
5b6d1e4f | 14047 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
14048 | if (inf == NULL) |
14049 | internal_error (__FILE__, __LINE__, | |
14050 | _("not currently attached to process %d"), pid); | |
14051 | ||
14052 | if (!inf->fake_pid_p) | |
14053 | { | |
14054 | const int annex_size = 9; | |
14055 | ||
224c3ddb | 14056 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14057 | xsnprintf (annex, annex_size, "%x", pid); |
14058 | } | |
14059 | ||
8b88a78e | 14060 | filename = target_read_stralloc (current_top_target (), |
c78fa86a GB |
14061 | TARGET_OBJECT_EXEC_FILE, annex); |
14062 | ||
9018be22 | 14063 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14064 | } |
14065 | ||
750ce8d1 YQ |
14066 | /* Implement the to_can_do_single_step target_ops method. */ |
14067 | ||
f6ac5f3d PA |
14068 | int |
14069 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14070 | { |
14071 | /* We can only tell whether target supports single step or not by | |
14072 | supported s and S vCont actions if the stub supports vContSupported | |
14073 | feature. If the stub doesn't support vContSupported feature, | |
14074 | we have conservatively to think target doesn't supports single | |
14075 | step. */ | |
14076 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14077 | { | |
14078 | struct remote_state *rs = get_remote_state (); | |
14079 | ||
14080 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14081 | remote_vcont_probe (); |
750ce8d1 YQ |
14082 | |
14083 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14084 | } | |
14085 | else | |
14086 | return 0; | |
14087 | } | |
14088 | ||
3a00c802 PA |
14089 | /* Implementation of the to_execution_direction method for the remote |
14090 | target. */ | |
14091 | ||
f6ac5f3d PA |
14092 | enum exec_direction_kind |
14093 | remote_target::execution_direction () | |
3a00c802 PA |
14094 | { |
14095 | struct remote_state *rs = get_remote_state (); | |
14096 | ||
14097 | return rs->last_resume_exec_dir; | |
14098 | } | |
14099 | ||
f6327dcb KB |
14100 | /* Return pointer to the thread_info struct which corresponds to |
14101 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14102 | ||
f6ac5f3d PA |
14103 | thread_info * |
14104 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14105 | int handle_len, | |
14106 | inferior *inf) | |
f6327dcb | 14107 | { |
5b6d1e4f | 14108 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14109 | { |
7aabaf9d | 14110 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14111 | |
14112 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14113 | { |
7aabaf9d | 14114 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14115 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14116 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14117 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14118 | handle_len) == 0) |
f6327dcb KB |
14119 | return tp; |
14120 | } | |
14121 | } | |
14122 | ||
14123 | return NULL; | |
14124 | } | |
14125 | ||
3d6c6204 KB |
14126 | gdb::byte_vector |
14127 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14128 | { | |
14129 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14130 | return priv->thread_handle; | |
14131 | } | |
14132 | ||
57810aa7 | 14133 | bool |
f6ac5f3d | 14134 | remote_target::can_async_p () |
6426a772 | 14135 | { |
5d93a237 TT |
14136 | struct remote_state *rs = get_remote_state (); |
14137 | ||
3015c064 SM |
14138 | /* We don't go async if the user has explicitly prevented it with the |
14139 | "maint set target-async" command. */ | |
c6ebd6cf | 14140 | if (!target_async_permitted) |
57810aa7 | 14141 | return false; |
75c99385 | 14142 | |
23860348 | 14143 | /* We're async whenever the serial device is. */ |
5d93a237 | 14144 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14145 | } |
14146 | ||
57810aa7 | 14147 | bool |
f6ac5f3d | 14148 | remote_target::is_async_p () |
6426a772 | 14149 | { |
5d93a237 TT |
14150 | struct remote_state *rs = get_remote_state (); |
14151 | ||
c6ebd6cf | 14152 | if (!target_async_permitted) |
75c99385 | 14153 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14154 | return false; |
75c99385 | 14155 | |
23860348 | 14156 | /* We're async whenever the serial device is. */ |
5d93a237 | 14157 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14158 | } |
14159 | ||
2acceee2 JM |
14160 | /* Pass the SERIAL event on and up to the client. One day this code |
14161 | will be able to delay notifying the client of an event until the | |
23860348 | 14162 | point where an entire packet has been received. */ |
2acceee2 | 14163 | |
2acceee2 JM |
14164 | static serial_event_ftype remote_async_serial_handler; |
14165 | ||
6426a772 | 14166 | static void |
819cc324 | 14167 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14168 | { |
2acceee2 JM |
14169 | /* Don't propogate error information up to the client. Instead let |
14170 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14171 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14172 | } |
14173 | ||
74531fed PA |
14174 | static void |
14175 | remote_async_inferior_event_handler (gdb_client_data data) | |
14176 | { | |
b1a35af2 | 14177 | inferior_event_handler (INF_REG_EVENT); |
96118d11 PA |
14178 | |
14179 | remote_target *remote = (remote_target *) data; | |
14180 | remote_state *rs = remote->get_remote_state (); | |
14181 | ||
14182 | /* inferior_event_handler may have consumed an event pending on the | |
14183 | infrun side without calling target_wait on the REMOTE target, or | |
14184 | may have pulled an event out of a different target. Keep trying | |
14185 | for this remote target as long it still has either pending events | |
14186 | or unacknowledged notifications. */ | |
14187 | ||
14188 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL | |
14189 | || !rs->stop_reply_queue.empty ()) | |
14190 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
74531fed PA |
14191 | } |
14192 | ||
5b6d1e4f PA |
14193 | int |
14194 | remote_target::async_wait_fd () | |
14195 | { | |
14196 | struct remote_state *rs = get_remote_state (); | |
14197 | return rs->remote_desc->fd; | |
14198 | } | |
14199 | ||
f6ac5f3d PA |
14200 | void |
14201 | remote_target::async (int enable) | |
2acceee2 | 14202 | { |
5d93a237 TT |
14203 | struct remote_state *rs = get_remote_state (); |
14204 | ||
6a3753b3 | 14205 | if (enable) |
2acceee2 | 14206 | { |
88b496c3 | 14207 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14208 | |
14209 | /* If there are pending events in the stop reply queue tell the | |
14210 | event loop to process them. */ | |
953edf2b | 14211 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14212 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14213 | /* For simplicity, below we clear the pending events token |
14214 | without remembering whether it is marked, so here we always | |
14215 | mark it. If there's actually no pending notification to | |
14216 | process, this ends up being a no-op (other than a spurious | |
14217 | event-loop wakeup). */ | |
14218 | if (target_is_non_stop_p ()) | |
14219 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14220 | } |
14221 | else | |
b7d2e916 PA |
14222 | { |
14223 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14224 | /* If the core is disabling async, it doesn't want to be |
14225 | disturbed with target events. Clear all async event sources | |
14226 | too. */ | |
6b8edb51 | 14227 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14228 | if (target_is_non_stop_p ()) |
14229 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14230 | } |
6426a772 JM |
14231 | } |
14232 | ||
65706a29 PA |
14233 | /* Implementation of the to_thread_events method. */ |
14234 | ||
f6ac5f3d PA |
14235 | void |
14236 | remote_target::thread_events (int enable) | |
65706a29 PA |
14237 | { |
14238 | struct remote_state *rs = get_remote_state (); | |
14239 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14240 | |
14241 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14242 | return; | |
14243 | ||
8d64371b | 14244 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14245 | putpkt (rs->buf); |
8d64371b | 14246 | getpkt (&rs->buf, 0); |
65706a29 PA |
14247 | |
14248 | switch (packet_ok (rs->buf, | |
14249 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14250 | { | |
14251 | case PACKET_OK: | |
8d64371b TT |
14252 | if (strcmp (rs->buf.data (), "OK") != 0) |
14253 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14254 | break; |
14255 | case PACKET_ERROR: | |
8d64371b | 14256 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14257 | break; |
14258 | case PACKET_UNKNOWN: | |
14259 | break; | |
14260 | } | |
14261 | } | |
14262 | ||
d471ea57 | 14263 | static void |
981a3fb3 | 14264 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14265 | { |
37a105a1 | 14266 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14267 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14268 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14269 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14270 | |
2e783024 | 14271 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14272 | for (; list != NULL; list = list->next) |
14273 | if (strcmp (list->name, "Z-packet") == 0) | |
14274 | continue; | |
427c3a89 DJ |
14275 | else if (list->type == not_set_cmd) |
14276 | /* Alias commands are exactly like the original, except they | |
14277 | don't have the normal type. */ | |
14278 | continue; | |
14279 | else | |
37a105a1 | 14280 | { |
2e783024 | 14281 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14282 | |
112e8700 SM |
14283 | uiout->field_string ("name", list->name); |
14284 | uiout->text (": "); | |
427c3a89 | 14285 | if (list->type == show_cmd) |
f5c4fcd9 | 14286 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14287 | else |
14288 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14289 | } |
d471ea57 | 14290 | } |
5a2468f5 | 14291 | |
0f71a2f6 | 14292 | |
23860348 | 14293 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14294 | static void |
14295 | remote_new_objfile (struct objfile *objfile) | |
14296 | { | |
6b8edb51 | 14297 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14298 | |
6b8edb51 PA |
14299 | if (remote != NULL) /* Have a remote connection. */ |
14300 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14301 | } |
14302 | ||
00bf0b85 SS |
14303 | /* Pull all the tracepoints defined on the target and create local |
14304 | data structures representing them. We don't want to create real | |
14305 | tracepoints yet, we don't want to mess up the user's existing | |
14306 | collection. */ | |
14307 | ||
f6ac5f3d PA |
14308 | int |
14309 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14310 | { |
00bf0b85 SS |
14311 | struct remote_state *rs = get_remote_state (); |
14312 | char *p; | |
d5551862 | 14313 | |
00bf0b85 SS |
14314 | /* Ask for a first packet of tracepoint definition. */ |
14315 | putpkt ("qTfP"); | |
8d64371b TT |
14316 | getpkt (&rs->buf, 0); |
14317 | p = rs->buf.data (); | |
00bf0b85 | 14318 | while (*p && *p != 'l') |
d5551862 | 14319 | { |
00bf0b85 SS |
14320 | parse_tracepoint_definition (p, utpp); |
14321 | /* Ask for another packet of tracepoint definition. */ | |
14322 | putpkt ("qTsP"); | |
8d64371b TT |
14323 | getpkt (&rs->buf, 0); |
14324 | p = rs->buf.data (); | |
d5551862 | 14325 | } |
00bf0b85 | 14326 | return 0; |
d5551862 SS |
14327 | } |
14328 | ||
f6ac5f3d PA |
14329 | int |
14330 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14331 | { |
00bf0b85 | 14332 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14333 | char *p; |
d5551862 | 14334 | |
00bf0b85 SS |
14335 | /* Ask for a first packet of variable definition. */ |
14336 | putpkt ("qTfV"); | |
8d64371b TT |
14337 | getpkt (&rs->buf, 0); |
14338 | p = rs->buf.data (); | |
00bf0b85 | 14339 | while (*p && *p != 'l') |
d5551862 | 14340 | { |
00bf0b85 SS |
14341 | parse_tsv_definition (p, utsvp); |
14342 | /* Ask for another packet of variable definition. */ | |
14343 | putpkt ("qTsV"); | |
8d64371b TT |
14344 | getpkt (&rs->buf, 0); |
14345 | p = rs->buf.data (); | |
d5551862 | 14346 | } |
00bf0b85 | 14347 | return 0; |
d5551862 SS |
14348 | } |
14349 | ||
c1e36e3e PA |
14350 | /* The "set/show range-stepping" show hook. */ |
14351 | ||
14352 | static void | |
14353 | show_range_stepping (struct ui_file *file, int from_tty, | |
14354 | struct cmd_list_element *c, | |
14355 | const char *value) | |
14356 | { | |
14357 | fprintf_filtered (file, | |
14358 | _("Debugger's willingness to use range stepping " | |
14359 | "is %s.\n"), value); | |
14360 | } | |
14361 | ||
6b8edb51 PA |
14362 | /* Return true if the vCont;r action is supported by the remote |
14363 | stub. */ | |
14364 | ||
14365 | bool | |
14366 | remote_target::vcont_r_supported () | |
14367 | { | |
14368 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14369 | remote_vcont_probe (); | |
14370 | ||
14371 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14372 | && get_remote_state ()->supports_vCont.r); | |
14373 | } | |
14374 | ||
c1e36e3e PA |
14375 | /* The "set/show range-stepping" set hook. */ |
14376 | ||
14377 | static void | |
eb4c3f4a | 14378 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14379 | struct cmd_list_element *c) |
14380 | { | |
6b8edb51 PA |
14381 | /* When enabling, check whether range stepping is actually supported |
14382 | by the target, and warn if not. */ | |
c1e36e3e PA |
14383 | if (use_range_stepping) |
14384 | { | |
6b8edb51 PA |
14385 | remote_target *remote = get_current_remote_target (); |
14386 | if (remote == NULL | |
14387 | || !remote->vcont_r_supported ()) | |
14388 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14389 | } |
14390 | } | |
14391 | ||
6c265988 | 14392 | void _initialize_remote (); |
c906108c | 14393 | void |
6c265988 | 14394 | _initialize_remote () |
c906108c | 14395 | { |
9a7071a8 | 14396 | struct cmd_list_element *cmd; |
6f937416 | 14397 | const char *cmd_name; |
ea9c271d | 14398 | |
0f71a2f6 | 14399 | /* architecture specific data */ |
29709017 DJ |
14400 | remote_g_packet_data_handle = |
14401 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14402 | |
d9f719f1 PA |
14403 | add_target (remote_target_info, remote_target::open); |
14404 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14405 | |
dc8acb97 | 14406 | /* Hook into new objfile notification. */ |
76727919 | 14407 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14408 | |
c906108c SS |
14409 | #if 0 |
14410 | init_remote_threadtests (); | |
14411 | #endif | |
14412 | ||
23860348 | 14413 | /* set/show remote ... */ |
d471ea57 | 14414 | |
0743fc83 | 14415 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 14416 | Remote protocol specific variables.\n\ |
5a2468f5 | 14417 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14418 | the packets being used."), |
0743fc83 TT |
14419 | &remote_set_cmdlist, "set remote ", |
14420 | 0 /* allow-unknown */, &setlist); | |
1bedd215 | 14421 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14422 | Remote protocol specific variables.\n\ |
5a2468f5 | 14423 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14424 | the packets being used."), |
cff3e48b | 14425 | &remote_show_cmdlist, "show remote ", |
23860348 | 14426 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14427 | |
1a966eab AC |
14428 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14429 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14430 | Argument is a single section name (default: all loaded sections).\n\ |
14431 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14432 | &cmdlist); |
14433 | ||
1a966eab AC |
14434 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14435 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14436 | maintenance packet TEXT\n\ |
14437 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14438 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14439 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14440 | terminating `#' character and checksum."), |
c906108c SS |
14441 | &maintenancelist); |
14442 | ||
7915a72c AC |
14443 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14444 | Set whether to send break if interrupted."), _("\ | |
14445 | Show whether to send break if interrupted."), _("\ | |
14446 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14447 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14448 | &setlist, &showlist); |
9a7071a8 | 14449 | cmd_name = "remotebreak"; |
cf00cd6f | 14450 | cmd = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
9a7071a8 JB |
14451 | deprecate_cmd (cmd, "set remote interrupt-sequence"); |
14452 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
cf00cd6f | 14453 | cmd = lookup_cmd (&cmd_name, showlist, "", NULL, -1, 1); |
9a7071a8 JB |
14454 | deprecate_cmd (cmd, "show remote interrupt-sequence"); |
14455 | ||
14456 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14457 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14458 | _("\ | |
9a7071a8 JB |
14459 | Set interrupt sequence to remote target."), _("\ |
14460 | Show interrupt sequence to remote target."), _("\ | |
14461 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14462 | NULL, show_interrupt_sequence, | |
14463 | &remote_set_cmdlist, | |
14464 | &remote_show_cmdlist); | |
14465 | ||
14466 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14467 | &interrupt_on_connect, _("\ | |
590042fc PW |
14468 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
14469 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
14470 | If set, interrupt sequence is sent to remote target."), |
14471 | NULL, NULL, | |
14472 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14473 | |
23860348 | 14474 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14475 | |
1a966eab AC |
14476 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14477 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14478 | &setlist); |
1a966eab AC |
14479 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14480 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14481 | &showlist); |
14482 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14483 | set_memory_write_packet_size, _("\ |
14484 | Set the maximum number of bytes per memory-write packet.\n\ | |
14485 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14486 | default packet size. The actual limit is further reduced\n\ | |
14487 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14488 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14489 | &remote_set_cmdlist); |
14490 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14491 | set_memory_read_packet_size, _("\ |
14492 | Set the maximum number of bytes per memory-read packet.\n\ | |
14493 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14494 | default packet size. The actual limit is further reduced\n\ | |
14495 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14496 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14497 | &remote_set_cmdlist); |
14498 | add_cmd ("memory-write-packet-size", no_class, | |
14499 | show_memory_write_packet_size, | |
1a966eab | 14500 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14501 | &remote_show_cmdlist); |
14502 | add_cmd ("memory-read-packet-size", no_class, | |
14503 | show_memory_read_packet_size, | |
1a966eab | 14504 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14505 | &remote_show_cmdlist); |
c906108c | 14506 | |
055303e2 | 14507 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14508 | &remote_hw_watchpoint_limit, _("\ |
14509 | Set the maximum number of target hardware watchpoints."), _("\ | |
14510 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14511 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14512 | NULL, show_hardware_watchpoint_limit, | |
14513 | &remote_set_cmdlist, | |
14514 | &remote_show_cmdlist); | |
14515 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14516 | no_class, | |
480a3f21 PW |
14517 | &remote_hw_watchpoint_length_limit, _("\ |
14518 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14519 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14520 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14521 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14522 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14523 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14524 | &remote_hw_breakpoint_limit, _("\ |
14525 | Set the maximum number of target hardware breakpoints."), _("\ | |
14526 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14527 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14528 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14529 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14530 | |
1b493192 PA |
14531 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14532 | &remote_address_size, _("\ | |
4d28ad1e AC |
14533 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14534 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14535 | NULL, |
14536 | NULL, /* FIXME: i18n: */ | |
14537 | &setlist, &showlist); | |
c906108c | 14538 | |
ca4f7f8b PA |
14539 | init_all_packet_configs (); |
14540 | ||
444abaca | 14541 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14542 | "X", "binary-download", 1); |
0f71a2f6 | 14543 | |
444abaca | 14544 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14545 | "vCont", "verbose-resume", 0); |
506fb367 | 14546 | |
89be2091 DJ |
14547 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14548 | "QPassSignals", "pass-signals", 0); | |
14549 | ||
82075af2 JS |
14550 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14551 | "QCatchSyscalls", "catch-syscalls", 0); | |
14552 | ||
9b224c5e PA |
14553 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14554 | "QProgramSignals", "program-signals", 0); | |
14555 | ||
bc3b087d SDJ |
14556 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14557 | "QSetWorkingDir", "set-working-dir", 0); | |
14558 | ||
aefd8b33 SDJ |
14559 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14560 | "QStartupWithShell", "startup-with-shell", 0); | |
14561 | ||
0a2dde4a SDJ |
14562 | add_packet_config_cmd (&remote_protocol_packets |
14563 | [PACKET_QEnvironmentHexEncoded], | |
14564 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14565 | 0); | |
14566 | ||
14567 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14568 | "QEnvironmentReset", "environment-reset", | |
14569 | 0); | |
14570 | ||
14571 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14572 | "QEnvironmentUnset", "environment-unset", | |
14573 | 0); | |
14574 | ||
444abaca | 14575 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14576 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14577 | |
444abaca | 14578 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14579 | "P", "set-register", 1); |
d471ea57 | 14580 | |
444abaca | 14581 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14582 | "p", "fetch-register", 1); |
b96ec7ac | 14583 | |
444abaca | 14584 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14585 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14586 | |
444abaca | 14587 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14588 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14589 | |
444abaca | 14590 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14591 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14592 | |
444abaca | 14593 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14594 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14595 | |
444abaca | 14596 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14597 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14598 | |
0876f84a DJ |
14599 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14600 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14601 | |
c78fa86a GB |
14602 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14603 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14604 | ||
23181151 DJ |
14605 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14606 | "qXfer:features:read", "target-features", 0); | |
14607 | ||
cfa9d6d9 DJ |
14608 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14609 | "qXfer:libraries:read", "library-info", 0); | |
14610 | ||
2268b414 JK |
14611 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14612 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14613 | ||
fd79ecee DJ |
14614 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14615 | "qXfer:memory-map:read", "memory-map", 0); | |
14616 | ||
07e059b5 | 14617 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
dda83cd7 | 14618 | "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 14619 | |
dc146f7c VP |
14620 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14621 | "qXfer:threads:read", "threads", 0); | |
14622 | ||
4aa995e1 | 14623 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
dda83cd7 | 14624 | "qXfer:siginfo:read", "read-siginfo-object", 0); |
4aa995e1 PA |
14625 | |
14626 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
dda83cd7 | 14627 | "qXfer:siginfo:write", "write-siginfo-object", 0); |
4aa995e1 | 14628 | |
b3b9301e PA |
14629 | add_packet_config_cmd |
14630 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14631 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14632 | |
169081d0 TG |
14633 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14634 | "qXfer:uib:read", "unwind-info-block", 0); | |
14635 | ||
444abaca | 14636 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14637 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14638 | 0); |
14639 | ||
711e434b PM |
14640 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14641 | "qGetTIBAddr", "get-thread-information-block-address", | |
14642 | 0); | |
14643 | ||
40ab02ce MS |
14644 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14645 | "bc", "reverse-continue", 0); | |
14646 | ||
14647 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14648 | "bs", "reverse-step", 0); | |
14649 | ||
be2a5f71 DJ |
14650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14651 | "qSupported", "supported-packets", 0); | |
14652 | ||
08388c79 DE |
14653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14654 | "qSearch:memory", "search-memory", 0); | |
14655 | ||
bd3eecc3 PA |
14656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14657 | "qTStatus", "trace-status", 0); | |
14658 | ||
15a201c8 GB |
14659 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14660 | "vFile:setfs", "hostio-setfs", 0); | |
14661 | ||
a6b151f1 DJ |
14662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14663 | "vFile:open", "hostio-open", 0); | |
14664 | ||
14665 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14666 | "vFile:pread", "hostio-pread", 0); | |
14667 | ||
14668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14669 | "vFile:pwrite", "hostio-pwrite", 0); | |
14670 | ||
14671 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14672 | "vFile:close", "hostio-close", 0); | |
14673 | ||
14674 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14675 | "vFile:unlink", "hostio-unlink", 0); | |
14676 | ||
b9e7b9c3 UW |
14677 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14678 | "vFile:readlink", "hostio-readlink", 0); | |
14679 | ||
0a93529c GB |
14680 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14681 | "vFile:fstat", "hostio-fstat", 0); | |
14682 | ||
2d717e4f DJ |
14683 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14684 | "vAttach", "attach", 0); | |
14685 | ||
14686 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14687 | "vRun", "run", 0); | |
14688 | ||
a6f3e723 SL |
14689 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14690 | "QStartNoAckMode", "noack", 0); | |
14691 | ||
82f73884 PA |
14692 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14693 | "vKill", "kill", 0); | |
14694 | ||
0b16c5cf PA |
14695 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14696 | "qAttached", "query-attached", 0); | |
14697 | ||
782b2b07 | 14698 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14699 | "ConditionalTracepoints", |
14700 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14701 | |
14702 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14703 | "ConditionalBreakpoints", | |
14704 | "conditional-breakpoints", 0); | |
14705 | ||
d3ce09f5 SS |
14706 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14707 | "BreakpointCommands", | |
14708 | "breakpoint-commands", 0); | |
14709 | ||
7a697b8d SS |
14710 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14711 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14712 | |
409873ef SS |
14713 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14714 | "TracepointSource", "TracepointSource", 0); | |
14715 | ||
d914c394 SS |
14716 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14717 | "QAllow", "allow", 0); | |
14718 | ||
0fb4aa4b PA |
14719 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14720 | "StaticTracepoints", "static-tracepoints", 0); | |
14721 | ||
1e4d1764 YQ |
14722 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14723 | "InstallInTrace", "install-in-trace", 0); | |
14724 | ||
0fb4aa4b | 14725 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
dda83cd7 | 14726 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 14727 | |
78d85199 YQ |
14728 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14729 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14730 | ||
03583c20 UW |
14731 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14732 | "QDisableRandomization", "disable-randomization", 0); | |
14733 | ||
d1feda86 YQ |
14734 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14735 | "QAgent", "agent", 0); | |
14736 | ||
f6f899bf HAQ |
14737 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14738 | "QTBuffer:size", "trace-buffer-size", 0); | |
14739 | ||
9accd112 MM |
14740 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14741 | "Qbtrace:off", "disable-btrace", 0); | |
14742 | ||
14743 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14744 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14745 | ||
14746 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14747 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14748 | |
14749 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14750 | "qXfer:btrace", "read-btrace", 0); | |
14751 | ||
f4abbc16 MM |
14752 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14753 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14754 | ||
d33501a5 MM |
14755 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14756 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14757 | ||
73b8c1fd PA |
14758 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14759 | "multiprocess-feature", "multiprocess-feature", 0); | |
14760 | ||
f7e6eed5 | 14761 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
dda83cd7 | 14762 | "swbreak-feature", "swbreak-feature", 0); |
f7e6eed5 PA |
14763 | |
14764 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
dda83cd7 | 14765 | "hwbreak-feature", "hwbreak-feature", 0); |
f7e6eed5 | 14766 | |
89245bc0 DB |
14767 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14768 | "fork-event-feature", "fork-event-feature", 0); | |
14769 | ||
14770 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14771 | "vfork-event-feature", "vfork-event-feature", 0); | |
14772 | ||
b20a6524 MM |
14773 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14774 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14775 | ||
750ce8d1 YQ |
14776 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14777 | "vContSupported", "verbose-resume-supported", 0); | |
14778 | ||
94585166 DB |
14779 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14780 | "exec-event-feature", "exec-event-feature", 0); | |
14781 | ||
de979965 PA |
14782 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14783 | "vCtrlC", "ctrl-c", 0); | |
14784 | ||
65706a29 PA |
14785 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14786 | "QThreadEvents", "thread-events", 0); | |
14787 | ||
f2faf941 PA |
14788 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14789 | "N stop reply", "no-resumed-stop-reply", 0); | |
14790 | ||
0b736949 DB |
14791 | /* Assert that we've registered "set remote foo-packet" commands |
14792 | for all packet configs. */ | |
ca4f7f8b PA |
14793 | { |
14794 | int i; | |
14795 | ||
14796 | for (i = 0; i < PACKET_MAX; i++) | |
14797 | { | |
14798 | /* Ideally all configs would have a command associated. Some | |
14799 | still don't though. */ | |
14800 | int excepted; | |
14801 | ||
14802 | switch (i) | |
14803 | { | |
14804 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14805 | case PACKET_EnableDisableTracepoints_feature: |
14806 | case PACKET_tracenz_feature: | |
14807 | case PACKET_DisconnectedTracing_feature: | |
14808 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14809 | case PACKET_qCRC: |
14810 | /* Additions to this list need to be well justified: | |
14811 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14812 | excepted = 1; |
14813 | break; | |
14814 | default: | |
14815 | excepted = 0; | |
14816 | break; | |
14817 | } | |
14818 | ||
14819 | /* This catches both forgetting to add a config command, and | |
14820 | forgetting to remove a packet from the exception list. */ | |
14821 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14822 | } | |
14823 | } | |
14824 | ||
37a105a1 DJ |
14825 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14826 | Z sub-packet has its own set and show commands, but users may | |
14827 | have sets to this variable in their .gdbinit files (or in their | |
14828 | documentation). */ | |
e9e68a56 | 14829 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 14830 | &remote_Z_packet_detect, _("\ |
590042fc PW |
14831 | Set use of remote protocol `Z' packets."), _("\ |
14832 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 14833 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14834 | packets."), |
e9e68a56 | 14835 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14836 | show_remote_protocol_Z_packet_cmd, |
14837 | /* FIXME: i18n: Use of remote protocol | |
14838 | `Z' packets is %s. */ | |
e9e68a56 | 14839 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14840 | |
0743fc83 | 14841 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 14842 | Manipulate files on the remote system.\n\ |
a6b151f1 | 14843 | Transfer files to and from the remote target system."), |
0743fc83 TT |
14844 | &remote_cmdlist, "remote ", |
14845 | 0 /* allow-unknown */, &cmdlist); | |
a6b151f1 DJ |
14846 | |
14847 | add_cmd ("put", class_files, remote_put_command, | |
14848 | _("Copy a local file to the remote system."), | |
14849 | &remote_cmdlist); | |
14850 | ||
14851 | add_cmd ("get", class_files, remote_get_command, | |
14852 | _("Copy a remote file to the local system."), | |
14853 | &remote_cmdlist); | |
14854 | ||
14855 | add_cmd ("delete", class_files, remote_delete_command, | |
14856 | _("Delete a remote file."), | |
14857 | &remote_cmdlist); | |
14858 | ||
2d717e4f | 14859 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14860 | &remote_exec_file_var, _("\ |
590042fc PW |
14861 | Set the remote pathname for \"run\"."), _("\ |
14862 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
14863 | set_remote_exec_file, |
14864 | show_remote_exec_file, | |
14865 | &remote_set_cmdlist, | |
14866 | &remote_show_cmdlist); | |
2d717e4f | 14867 | |
c1e36e3e PA |
14868 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14869 | &use_range_stepping, _("\ | |
14870 | Enable or disable range stepping."), _("\ | |
14871 | Show whether target-assisted range stepping is enabled."), _("\ | |
14872 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14873 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14874 | of issuing multiple single-steps. This speeds up source level\n\ | |
14875 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14876 | stepping is supported by the target. The default is on."), | |
14877 | set_range_stepping, | |
14878 | show_range_stepping, | |
14879 | &setlist, | |
14880 | &showlist); | |
14881 | ||
ed2b7c17 TT |
14882 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
14883 | Set watchdog timer."), _("\ | |
14884 | Show watchdog timer."), _("\ | |
14885 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
14886 | to finish a low-level step or continue operation. If the specified amount\n\ | |
14887 | of time passes without a response from the target, an error occurs."), | |
14888 | NULL, | |
14889 | show_watchdog, | |
14890 | &setlist, &showlist); | |
14891 | ||
6cc8564b LM |
14892 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
14893 | &remote_packet_max_chars, _("\ | |
14894 | Set the maximum number of characters to display for each remote packet."), _("\ | |
14895 | Show the maximum number of characters to display for each remote packet."), _("\ | |
14896 | Specify \"unlimited\" to display all the characters."), | |
14897 | NULL, show_remote_packet_max_chars, | |
14898 | &setdebuglist, &showdebuglist); | |
14899 | ||
449092f6 | 14900 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 14901 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
c906108c | 14902 | } |