Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1988-2020 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
3b3dac9b | 30 | #include "process-stratum-target.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
268a13a5 TT |
45 | #include "gdbsupport/filestuff.h" |
46 | #include "gdbsupport/rsp-low.h" | |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
268a13a5 | 50 | #include "gdbsupport/gdb_sys_time.h" |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
268a13a5 | 71 | #include "gdbsupport/agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
268a13a5 TT |
75 | #include "gdbsupport/scoped_restore.h" |
76 | #include "gdbsupport/environ.h" | |
77 | #include "gdbsupport/byte-vector.h" | |
39ef2f62 | 78 | #include <algorithm> |
9d6eea31 | 79 | #include <unordered_map> |
35b1e5cc | 80 | |
f6ac5f3d PA |
81 | /* The remote target. */ |
82 | ||
d9f719f1 PA |
83 | static const char remote_doc[] = N_("\ |
84 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
85 | Specify the serial device it is connected to\n\ | |
86 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
87 | ||
6b8edb51 PA |
88 | #define OPAQUETHREADBYTES 8 |
89 | ||
90 | /* a 64 bit opaque identifier */ | |
91 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
92 | ||
93 | struct gdb_ext_thread_info; | |
94 | struct threads_listing_context; | |
95 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
96 | struct protocol_feature; | |
97 | struct packet_reg; | |
98 | ||
99 | struct stop_reply; | |
32603266 | 100 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
101 | |
102 | /* Generic configuration support for packets the stub optionally | |
103 | supports. Allows the user to specify the use of the packet as well | |
104 | as allowing GDB to auto-detect support in the remote stub. */ | |
105 | ||
106 | enum packet_support | |
107 | { | |
108 | PACKET_SUPPORT_UNKNOWN = 0, | |
109 | PACKET_ENABLE, | |
110 | PACKET_DISABLE | |
111 | }; | |
112 | ||
113 | /* Analyze a packet's return value and update the packet config | |
114 | accordingly. */ | |
115 | ||
116 | enum packet_result | |
117 | { | |
118 | PACKET_ERROR, | |
119 | PACKET_OK, | |
120 | PACKET_UNKNOWN | |
121 | }; | |
122 | ||
123 | struct threads_listing_context; | |
3c69da40 PA |
124 | |
125 | /* Stub vCont actions support. | |
126 | ||
127 | Each field is a boolean flag indicating whether the stub reports | |
128 | support for the corresponding action. */ | |
129 | ||
130 | struct vCont_action_support | |
131 | { | |
132 | /* vCont;t */ | |
133 | bool t = false; | |
134 | ||
135 | /* vCont;r */ | |
136 | bool r = false; | |
137 | ||
138 | /* vCont;s */ | |
139 | bool s = false; | |
140 | ||
141 | /* vCont;S */ | |
142 | bool S = false; | |
143 | }; | |
144 | ||
405feb71 | 145 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
146 | |
147 | #define MAXTHREADLISTRESULTS 32 | |
148 | ||
149 | /* Data for the vFile:pread readahead cache. */ | |
150 | ||
151 | struct readahead_cache | |
152 | { | |
153 | /* Invalidate the readahead cache. */ | |
154 | void invalidate (); | |
155 | ||
156 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
157 | void invalidate_fd (int fd); | |
158 | ||
159 | /* Serve pread from the readahead cache. Returns number of bytes | |
160 | read, or 0 if the request can't be served from the cache. */ | |
161 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
162 | ||
163 | /* The file descriptor for the file that is being cached. -1 if the | |
164 | cache is invalid. */ | |
165 | int fd = -1; | |
166 | ||
167 | /* The offset into the file that the cache buffer corresponds | |
168 | to. */ | |
169 | ULONGEST offset = 0; | |
170 | ||
171 | /* The buffer holding the cache contents. */ | |
172 | gdb_byte *buf = nullptr; | |
173 | /* The buffer's size. We try to read as much as fits into a packet | |
174 | at a time. */ | |
175 | size_t bufsize = 0; | |
176 | ||
177 | /* Cache hit and miss counters. */ | |
178 | ULONGEST hit_count = 0; | |
179 | ULONGEST miss_count = 0; | |
180 | }; | |
181 | ||
182 | /* Description of the remote protocol for a given architecture. */ | |
183 | ||
184 | struct packet_reg | |
185 | { | |
186 | long offset; /* Offset into G packet. */ | |
187 | long regnum; /* GDB's internal register number. */ | |
188 | LONGEST pnum; /* Remote protocol register number. */ | |
189 | int in_g_packet; /* Always part of G packet. */ | |
190 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
191 | at present. */ | |
192 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
193 | at present. */ | |
194 | }; | |
195 | ||
196 | struct remote_arch_state | |
197 | { | |
198 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
199 | ||
200 | /* Description of the remote protocol registers. */ | |
201 | long sizeof_g_packet; | |
202 | ||
203 | /* Description of the remote protocol registers indexed by REGNUM | |
204 | (making an array gdbarch_num_regs in size). */ | |
205 | std::unique_ptr<packet_reg[]> regs; | |
206 | ||
207 | /* This is the size (in chars) of the first response to the ``g'' | |
208 | packet. It is used as a heuristic when determining the maximum | |
209 | size of memory-read and memory-write packets. A target will | |
210 | typically only reserve a buffer large enough to hold the ``g'' | |
211 | packet. The size does not include packet overhead (headers and | |
212 | trailers). */ | |
213 | long actual_register_packet_size; | |
214 | ||
215 | /* This is the maximum size (in chars) of a non read/write packet. | |
216 | It is also used as a cap on the size of read/write packets. */ | |
217 | long remote_packet_size; | |
218 | }; | |
219 | ||
220 | /* Description of the remote protocol state for the currently | |
221 | connected target. This is per-target state, and independent of the | |
222 | selected architecture. */ | |
223 | ||
224 | class remote_state | |
225 | { | |
226 | public: | |
227 | ||
228 | remote_state (); | |
229 | ~remote_state (); | |
230 | ||
231 | /* Get the remote arch state for GDBARCH. */ | |
232 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
233 | ||
234 | public: /* data */ | |
235 | ||
236 | /* A buffer to use for incoming packets, and its current size. The | |
237 | buffer is grown dynamically for larger incoming packets. | |
238 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 239 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
240 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
241 | packets. */ | |
8d64371b | 242 | gdb::char_vector buf; |
3c69da40 PA |
243 | |
244 | /* True if we're going through initial connection setup (finding out | |
245 | about the remote side's threads, relocating symbols, etc.). */ | |
246 | bool starting_up = false; | |
247 | ||
248 | /* If we negotiated packet size explicitly (and thus can bypass | |
249 | heuristics for the largest packet size that will not overflow | |
250 | a buffer in the stub), this will be set to that packet size. | |
251 | Otherwise zero, meaning to use the guessed size. */ | |
252 | long explicit_packet_size = 0; | |
253 | ||
254 | /* remote_wait is normally called when the target is running and | |
255 | waits for a stop reply packet. But sometimes we need to call it | |
256 | when the target is already stopped. We can send a "?" packet | |
257 | and have remote_wait read the response. Or, if we already have | |
258 | the response, we can stash it in BUF and tell remote_wait to | |
259 | skip calling getpkt. This flag is set when BUF contains a | |
260 | stop reply packet and the target is not waiting. */ | |
261 | int cached_wait_status = 0; | |
262 | ||
263 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
264 | expect acks from each other. The connection is assumed to be | |
265 | reliable. */ | |
266 | bool noack_mode = false; | |
267 | ||
268 | /* True if we're connected in extended remote mode. */ | |
269 | bool extended = false; | |
270 | ||
271 | /* True if we resumed the target and we're waiting for the target to | |
272 | stop. In the mean time, we can't start another command/query. | |
273 | The remote server wouldn't be ready to process it, so we'd | |
274 | timeout waiting for a reply that would never come and eventually | |
275 | we'd close the connection. This can happen in asynchronous mode | |
276 | because we allow GDB commands while the target is running. */ | |
277 | bool waiting_for_stop_reply = false; | |
278 | ||
279 | /* The status of the stub support for the various vCont actions. */ | |
280 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
281 | /* Whether vCont support was probed already. This is a workaround |
282 | until packet_support is per-connection. */ | |
283 | bool supports_vCont_probed; | |
3c69da40 PA |
284 | |
285 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
286 | responded to that. */ | |
287 | bool ctrlc_pending_p = false; | |
288 | ||
289 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
290 | remote descriptor. At that point it is not safe to send a remote | |
291 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
292 | process it once we're done with sending/receiving the current | |
293 | packet, which should be shortly. If however that takes too long, | |
294 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
295 | bool got_ctrlc_during_io = false; | |
296 | ||
297 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
298 | remote_open knows that we don't have a file open when the program | |
299 | starts. */ | |
300 | struct serial *remote_desc = nullptr; | |
301 | ||
302 | /* These are the threads which we last sent to the remote system. The | |
303 | TID member will be -1 for all or -2 for not sent yet. */ | |
304 | ptid_t general_thread = null_ptid; | |
305 | ptid_t continue_thread = null_ptid; | |
306 | ||
307 | /* This is the traceframe which we last selected on the remote system. | |
308 | It will be -1 if no traceframe is selected. */ | |
309 | int remote_traceframe_number = -1; | |
310 | ||
311 | char *last_pass_packet = nullptr; | |
312 | ||
313 | /* The last QProgramSignals packet sent to the target. We bypass | |
314 | sending a new program signals list down to the target if the new | |
315 | packet is exactly the same as the last we sent. IOW, we only let | |
316 | the target know about program signals list changes. */ | |
317 | char *last_program_signals_packet = nullptr; | |
318 | ||
319 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
320 | ||
321 | bool last_sent_step = false; | |
322 | ||
323 | /* The execution direction of the last resume we got. */ | |
324 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
325 | ||
326 | char *finished_object = nullptr; | |
327 | char *finished_annex = nullptr; | |
328 | ULONGEST finished_offset = 0; | |
329 | ||
330 | /* Should we try the 'ThreadInfo' query packet? | |
331 | ||
332 | This variable (NOT available to the user: auto-detect only!) | |
333 | determines whether GDB will use the new, simpler "ThreadInfo" | |
334 | query or the older, more complex syntax for thread queries. | |
335 | This is an auto-detect variable (set to true at each connect, | |
336 | and set to false when the target fails to recognize it). */ | |
337 | bool use_threadinfo_query = false; | |
338 | bool use_threadextra_query = false; | |
339 | ||
340 | threadref echo_nextthread {}; | |
341 | threadref nextthread {}; | |
342 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
343 | ||
344 | /* The state of remote notification. */ | |
345 | struct remote_notif_state *notif_state = nullptr; | |
346 | ||
347 | /* The branch trace configuration. */ | |
348 | struct btrace_config btrace_config {}; | |
349 | ||
350 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
351 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
352 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
353 | has yet been sent. */ | |
354 | int fs_pid = -1; | |
355 | ||
356 | /* A readahead cache for vFile:pread. Often, reading a binary | |
357 | involves a sequence of small reads. E.g., when parsing an ELF | |
358 | file. A readahead cache helps mostly the case of remote | |
359 | debugging on a connection with higher latency, due to the | |
360 | request/reply nature of the RSP. We only cache data for a single | |
361 | file descriptor at a time. */ | |
362 | struct readahead_cache readahead_cache; | |
363 | ||
364 | /* The list of already fetched and acknowledged stop events. This | |
365 | queue is used for notification Stop, and other notifications | |
366 | don't need queue for their events, because the notification | |
367 | events of Stop can't be consumed immediately, so that events | |
368 | should be queued first, and be consumed by remote_wait_{ns,as} | |
369 | one per time. Other notifications can consume their events | |
370 | immediately, so queue is not needed for them. */ | |
953edf2b | 371 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
372 | |
373 | /* Asynchronous signal handle registered as event loop source for | |
374 | when we have pending events ready to be passed to the core. */ | |
375 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
376 | ||
377 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
378 | ``forever'' still use the normal timeout mechanism. This is | |
379 | currently used by the ASYNC code to guarentee that target reads | |
380 | during the initial connect always time-out. Once getpkt has been | |
381 | modified to return a timeout indication and, in turn | |
382 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
383 | this can go away. */ | |
384 | int wait_forever_enabled_p = 1; | |
385 | ||
386 | private: | |
387 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
388 | is only one entry here, though we may see more with stubs that | |
389 | support multi-process. */ | |
390 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
391 | m_arch_states; | |
392 | }; | |
6b8edb51 | 393 | |
d9f719f1 PA |
394 | static const target_info remote_target_info = { |
395 | "remote", | |
396 | N_("Remote serial target in gdb-specific protocol"), | |
397 | remote_doc | |
398 | }; | |
399 | ||
3b3dac9b | 400 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
401 | { |
402 | public: | |
3b3dac9b | 403 | remote_target () = default; |
6b8edb51 | 404 | ~remote_target () override; |
f6ac5f3d | 405 | |
d9f719f1 PA |
406 | const target_info &info () const override |
407 | { return remote_target_info; } | |
f6ac5f3d | 408 | |
121b3efd PA |
409 | const char *connection_string () override; |
410 | ||
f6ac5f3d PA |
411 | thread_control_capabilities get_thread_control_capabilities () override |
412 | { return tc_schedlock; } | |
413 | ||
d9f719f1 PA |
414 | /* Open a remote connection. */ |
415 | static void open (const char *, int); | |
416 | ||
f6ac5f3d PA |
417 | void close () override; |
418 | ||
419 | void detach (inferior *, int) override; | |
420 | void disconnect (const char *, int) override; | |
421 | ||
422 | void commit_resume () override; | |
423 | void resume (ptid_t, int, enum gdb_signal) override; | |
424 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
425 | ||
426 | void fetch_registers (struct regcache *, int) override; | |
427 | void store_registers (struct regcache *, int) override; | |
428 | void prepare_to_store (struct regcache *) override; | |
429 | ||
430 | void files_info () override; | |
431 | ||
432 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
433 | ||
434 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
435 | enum remove_bp_reason) override; | |
436 | ||
437 | ||
57810aa7 PA |
438 | bool stopped_by_sw_breakpoint () override; |
439 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 440 | |
57810aa7 | 441 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 442 | |
57810aa7 | 443 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 444 | |
57810aa7 | 445 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 446 | |
57810aa7 | 447 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 448 | |
57810aa7 | 449 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
450 | |
451 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
452 | ||
453 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
454 | ||
455 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
456 | ||
457 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
458 | ||
459 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
460 | struct expression *) override; | |
461 | ||
462 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
463 | struct expression *) override; | |
464 | ||
465 | void kill () override; | |
466 | ||
467 | void load (const char *, int) override; | |
468 | ||
469 | void mourn_inferior () override; | |
470 | ||
adc6a863 | 471 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
472 | |
473 | int set_syscall_catchpoint (int, bool, int, | |
474 | gdb::array_view<const int>) override; | |
475 | ||
adc6a863 | 476 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 477 | |
57810aa7 | 478 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
479 | |
480 | const char *thread_name (struct thread_info *) override; | |
481 | ||
482 | void update_thread_list () override; | |
483 | ||
a068643d | 484 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
485 | |
486 | const char *extra_thread_info (struct thread_info *) override; | |
487 | ||
488 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
489 | ||
490 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
491 | int handle_len, | |
492 | inferior *inf) override; | |
493 | ||
3d6c6204 KB |
494 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
495 | override; | |
496 | ||
f6ac5f3d PA |
497 | void stop (ptid_t) override; |
498 | ||
499 | void interrupt () override; | |
500 | ||
501 | void pass_ctrlc () override; | |
502 | ||
503 | enum target_xfer_status xfer_partial (enum target_object object, | |
504 | const char *annex, | |
505 | gdb_byte *readbuf, | |
506 | const gdb_byte *writebuf, | |
507 | ULONGEST offset, ULONGEST len, | |
508 | ULONGEST *xfered_len) override; | |
509 | ||
510 | ULONGEST get_memory_xfer_limit () override; | |
511 | ||
512 | void rcmd (const char *command, struct ui_file *output) override; | |
513 | ||
514 | char *pid_to_exec_file (int pid) override; | |
515 | ||
516 | void log_command (const char *cmd) override | |
517 | { | |
518 | serial_log_command (this, cmd); | |
519 | } | |
520 | ||
521 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
522 | CORE_ADDR load_module_addr, | |
523 | CORE_ADDR offset) override; | |
524 | ||
57810aa7 | 525 | bool can_execute_reverse () override; |
f6ac5f3d PA |
526 | |
527 | std::vector<mem_region> memory_map () override; | |
528 | ||
529 | void flash_erase (ULONGEST address, LONGEST length) override; | |
530 | ||
531 | void flash_done () override; | |
532 | ||
533 | const struct target_desc *read_description () override; | |
534 | ||
535 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
536 | const gdb_byte *pattern, ULONGEST pattern_len, | |
537 | CORE_ADDR *found_addrp) override; | |
538 | ||
57810aa7 | 539 | bool can_async_p () override; |
f6ac5f3d | 540 | |
57810aa7 | 541 | bool is_async_p () override; |
f6ac5f3d PA |
542 | |
543 | void async (int) override; | |
544 | ||
5b6d1e4f PA |
545 | int async_wait_fd () override; |
546 | ||
f6ac5f3d PA |
547 | void thread_events (int) override; |
548 | ||
549 | int can_do_single_step () override; | |
550 | ||
551 | void terminal_inferior () override; | |
552 | ||
553 | void terminal_ours () override; | |
554 | ||
57810aa7 | 555 | bool supports_non_stop () override; |
f6ac5f3d | 556 | |
57810aa7 | 557 | bool supports_multi_process () override; |
f6ac5f3d | 558 | |
57810aa7 | 559 | bool supports_disable_randomization () override; |
f6ac5f3d | 560 | |
57810aa7 | 561 | bool filesystem_is_local () override; |
f6ac5f3d PA |
562 | |
563 | ||
564 | int fileio_open (struct inferior *inf, const char *filename, | |
565 | int flags, int mode, int warn_if_slow, | |
566 | int *target_errno) override; | |
567 | ||
568 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
569 | ULONGEST offset, int *target_errno) override; | |
570 | ||
571 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
572 | ULONGEST offset, int *target_errno) override; | |
573 | ||
574 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
575 | ||
576 | int fileio_close (int fd, int *target_errno) override; | |
577 | ||
578 | int fileio_unlink (struct inferior *inf, | |
579 | const char *filename, | |
580 | int *target_errno) override; | |
581 | ||
582 | gdb::optional<std::string> | |
583 | fileio_readlink (struct inferior *inf, | |
584 | const char *filename, | |
585 | int *target_errno) override; | |
586 | ||
57810aa7 | 587 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 588 | |
57810aa7 | 589 | bool supports_string_tracing () override; |
f6ac5f3d | 590 | |
57810aa7 | 591 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 592 | |
57810aa7 | 593 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
594 | |
595 | void trace_init () override; | |
596 | ||
597 | void download_tracepoint (struct bp_location *location) override; | |
598 | ||
57810aa7 | 599 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
600 | |
601 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
602 | ||
603 | void enable_tracepoint (struct bp_location *location) override; | |
604 | ||
605 | void disable_tracepoint (struct bp_location *location) override; | |
606 | ||
607 | void trace_set_readonly_regions () override; | |
608 | ||
609 | void trace_start () override; | |
610 | ||
611 | int get_trace_status (struct trace_status *ts) override; | |
612 | ||
613 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
614 | override; | |
615 | ||
616 | void trace_stop () override; | |
617 | ||
618 | int trace_find (enum trace_find_type type, int num, | |
619 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
620 | ||
57810aa7 | 621 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
622 | |
623 | int save_trace_data (const char *filename) override; | |
624 | ||
625 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
626 | ||
627 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
628 | ||
629 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
630 | ||
631 | int get_min_fast_tracepoint_insn_len () override; | |
632 | ||
633 | void set_disconnected_tracing (int val) override; | |
634 | ||
635 | void set_circular_trace_buffer (int val) override; | |
636 | ||
637 | void set_trace_buffer_size (LONGEST val) override; | |
638 | ||
57810aa7 PA |
639 | bool set_trace_notes (const char *user, const char *notes, |
640 | const char *stopnotes) override; | |
f6ac5f3d PA |
641 | |
642 | int core_of_thread (ptid_t ptid) override; | |
643 | ||
644 | int verify_memory (const gdb_byte *data, | |
645 | CORE_ADDR memaddr, ULONGEST size) override; | |
646 | ||
647 | ||
57810aa7 | 648 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
649 | |
650 | void set_permissions () override; | |
651 | ||
652 | bool static_tracepoint_marker_at (CORE_ADDR, | |
653 | struct static_tracepoint_marker *marker) | |
654 | override; | |
655 | ||
656 | std::vector<static_tracepoint_marker> | |
657 | static_tracepoint_markers_by_strid (const char *id) override; | |
658 | ||
659 | traceframe_info_up traceframe_info () override; | |
660 | ||
57810aa7 PA |
661 | bool use_agent (bool use) override; |
662 | bool can_use_agent () override; | |
f6ac5f3d PA |
663 | |
664 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
665 | const struct btrace_config *conf) override; | |
666 | ||
667 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
668 | ||
669 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
670 | ||
671 | enum btrace_error read_btrace (struct btrace_data *data, | |
672 | struct btrace_target_info *btinfo, | |
673 | enum btrace_read_type type) override; | |
674 | ||
675 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 676 | bool augmented_libraries_svr4_read () override; |
f6ac5f3d | 677 | int follow_fork (int, int) override; |
4ca51187 | 678 | void follow_exec (struct inferior *, const char *) override; |
f6ac5f3d PA |
679 | int insert_fork_catchpoint (int) override; |
680 | int remove_fork_catchpoint (int) override; | |
681 | int insert_vfork_catchpoint (int) override; | |
682 | int remove_vfork_catchpoint (int) override; | |
683 | int insert_exec_catchpoint (int) override; | |
684 | int remove_exec_catchpoint (int) override; | |
685 | enum exec_direction_kind execution_direction () override; | |
686 | ||
6b8edb51 PA |
687 | public: /* Remote specific methods. */ |
688 | ||
689 | void remote_download_command_source (int num, ULONGEST addr, | |
690 | struct command_line *cmds); | |
691 | ||
692 | void remote_file_put (const char *local_file, const char *remote_file, | |
693 | int from_tty); | |
694 | void remote_file_get (const char *remote_file, const char *local_file, | |
695 | int from_tty); | |
696 | void remote_file_delete (const char *remote_file, int from_tty); | |
697 | ||
698 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
699 | ULONGEST offset, int *remote_errno); | |
700 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
701 | ULONGEST offset, int *remote_errno); | |
702 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
703 | ULONGEST offset, int *remote_errno); | |
704 | ||
705 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
706 | int *remote_errno, char **attachment, | |
707 | int *attachment_len); | |
708 | int remote_hostio_set_filesystem (struct inferior *inf, | |
709 | int *remote_errno); | |
710 | /* We should get rid of this and use fileio_open directly. */ | |
711 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
712 | int flags, int mode, int warn_if_slow, | |
713 | int *remote_errno); | |
714 | int remote_hostio_close (int fd, int *remote_errno); | |
715 | ||
716 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
717 | int *remote_errno); | |
718 | ||
719 | struct remote_state *get_remote_state (); | |
720 | ||
721 | long get_remote_packet_size (void); | |
722 | long get_memory_packet_size (struct memory_packet_config *config); | |
723 | ||
724 | long get_memory_write_packet_size (); | |
725 | long get_memory_read_packet_size (); | |
726 | ||
727 | char *append_pending_thread_resumptions (char *p, char *endp, | |
728 | ptid_t ptid); | |
d9f719f1 | 729 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 730 | void start_remote (int from_tty, int extended_p); |
00431a78 | 731 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
732 | |
733 | char *append_resumption (char *p, char *endp, | |
734 | ptid_t ptid, int step, gdb_signal siggnal); | |
735 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
736 | gdb_signal siggnal); | |
737 | ||
738 | void add_current_inferior_and_thread (char *wait_status); | |
739 | ||
740 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
741 | int options); | |
742 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, | |
743 | int options); | |
744 | ||
745 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
746 | target_waitstatus *status); | |
747 | ||
748 | void remote_notice_new_inferior (ptid_t currthread, int executing); | |
749 | ||
750 | void process_initial_stop_replies (int from_tty); | |
751 | ||
00431a78 | 752 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
753 | |
754 | void btrace_sync_conf (const btrace_config *conf); | |
755 | ||
756 | void remote_btrace_maybe_reopen (); | |
757 | ||
758 | void remove_new_fork_children (threads_listing_context *context); | |
759 | void kill_new_fork_children (int pid); | |
760 | void discard_pending_stop_replies (struct inferior *inf); | |
761 | int stop_reply_queue_length (); | |
762 | ||
763 | void check_pending_events_prevent_wildcard_vcont | |
764 | (int *may_global_wildcard_vcont); | |
765 | ||
766 | void discard_pending_stop_replies_in_queue (); | |
767 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
768 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
769 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 770 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
771 | |
772 | void remote_stop_ns (ptid_t ptid); | |
773 | void remote_interrupt_as (); | |
774 | void remote_interrupt_ns (); | |
775 | ||
776 | char *remote_get_noisy_reply (); | |
777 | int remote_query_attached (int pid); | |
9ab8741a | 778 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
779 | int try_open_exec); |
780 | ||
781 | ptid_t remote_current_thread (ptid_t oldpid); | |
782 | ptid_t get_current_thread (char *wait_status); | |
783 | ||
784 | void set_thread (ptid_t ptid, int gen); | |
785 | void set_general_thread (ptid_t ptid); | |
786 | void set_continue_thread (ptid_t ptid); | |
787 | void set_general_process (); | |
788 | ||
789 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
790 | ||
791 | int remote_unpack_thread_info_response (char *pkt, threadref *expectedref, | |
792 | gdb_ext_thread_info *info); | |
793 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
794 | gdb_ext_thread_info *info); | |
795 | ||
796 | int parse_threadlist_response (char *pkt, int result_limit, | |
797 | threadref *original_echo, | |
798 | threadref *resultlist, | |
799 | int *doneflag); | |
800 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
801 | int result_limit, int *done, int *result_count, | |
802 | threadref *threadlist); | |
803 | ||
804 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
805 | void *context, int looplimit); | |
806 | ||
807 | int remote_get_threads_with_ql (threads_listing_context *context); | |
808 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
809 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
810 | ||
811 | void extended_remote_restart (); | |
812 | ||
813 | void get_offsets (); | |
814 | ||
815 | void remote_check_symbols (); | |
816 | ||
817 | void remote_supported_packet (const struct protocol_feature *feature, | |
818 | enum packet_support support, | |
819 | const char *argument); | |
820 | ||
821 | void remote_query_supported (); | |
822 | ||
823 | void remote_packet_size (const protocol_feature *feature, | |
824 | packet_support support, const char *value); | |
825 | ||
826 | void remote_serial_quit_handler (); | |
827 | ||
828 | void remote_detach_pid (int pid); | |
829 | ||
830 | void remote_vcont_probe (); | |
831 | ||
832 | void remote_resume_with_hc (ptid_t ptid, int step, | |
833 | gdb_signal siggnal); | |
834 | ||
835 | void send_interrupt_sequence (); | |
836 | void interrupt_query (); | |
837 | ||
838 | void remote_notif_get_pending_events (notif_client *nc); | |
839 | ||
840 | int fetch_register_using_p (struct regcache *regcache, | |
841 | packet_reg *reg); | |
842 | int send_g_packet (); | |
843 | void process_g_packet (struct regcache *regcache); | |
844 | void fetch_registers_using_g (struct regcache *regcache); | |
845 | int store_register_using_P (const struct regcache *regcache, | |
846 | packet_reg *reg); | |
847 | void store_registers_using_G (const struct regcache *regcache); | |
848 | ||
849 | void set_remote_traceframe (); | |
850 | ||
851 | void check_binary_download (CORE_ADDR addr); | |
852 | ||
853 | target_xfer_status remote_write_bytes_aux (const char *header, | |
854 | CORE_ADDR memaddr, | |
855 | const gdb_byte *myaddr, | |
856 | ULONGEST len_units, | |
857 | int unit_size, | |
858 | ULONGEST *xfered_len_units, | |
859 | char packet_format, | |
860 | int use_length); | |
861 | ||
862 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
863 | const gdb_byte *myaddr, ULONGEST len, | |
864 | int unit_size, ULONGEST *xfered_len); | |
865 | ||
866 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
867 | ULONGEST len_units, | |
868 | int unit_size, ULONGEST *xfered_len_units); | |
869 | ||
870 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
871 | ULONGEST memaddr, | |
872 | ULONGEST len, | |
873 | int unit_size, | |
874 | ULONGEST *xfered_len); | |
875 | ||
876 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
877 | gdb_byte *myaddr, ULONGEST len, | |
878 | int unit_size, | |
879 | ULONGEST *xfered_len); | |
880 | ||
881 | packet_result remote_send_printf (const char *format, ...) | |
882 | ATTRIBUTE_PRINTF (2, 3); | |
883 | ||
884 | target_xfer_status remote_flash_write (ULONGEST address, | |
885 | ULONGEST length, ULONGEST *xfered_len, | |
886 | const gdb_byte *data); | |
887 | ||
888 | int readchar (int timeout); | |
889 | ||
890 | void remote_serial_write (const char *str, int len); | |
891 | ||
892 | int putpkt (const char *buf); | |
893 | int putpkt_binary (const char *buf, int cnt); | |
894 | ||
8d64371b TT |
895 | int putpkt (const gdb::char_vector &buf) |
896 | { | |
897 | return putpkt (buf.data ()); | |
898 | } | |
899 | ||
6b8edb51 | 900 | void skip_frame (); |
8d64371b TT |
901 | long read_frame (gdb::char_vector *buf_p); |
902 | void getpkt (gdb::char_vector *buf, int forever); | |
903 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 904 | int expecting_notif, int *is_notif); |
8d64371b TT |
905 | int getpkt_sane (gdb::char_vector *buf, int forever); |
906 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
907 | int *is_notif); |
908 | int remote_vkill (int pid); | |
909 | void remote_kill_k (); | |
910 | ||
911 | void extended_remote_disable_randomization (int val); | |
912 | int extended_remote_run (const std::string &args); | |
913 | ||
914 | void send_environment_packet (const char *action, | |
915 | const char *packet, | |
916 | const char *value); | |
917 | ||
918 | void extended_remote_environment_support (); | |
3c69da40 | 919 | void extended_remote_set_inferior_cwd (); |
80152258 | 920 | |
3c69da40 PA |
921 | target_xfer_status remote_write_qxfer (const char *object_name, |
922 | const char *annex, | |
923 | const gdb_byte *writebuf, | |
924 | ULONGEST offset, LONGEST len, | |
925 | ULONGEST *xfered_len, | |
926 | struct packet_config *packet); | |
43c3a0e4 | 927 | |
3c69da40 PA |
928 | target_xfer_status remote_read_qxfer (const char *object_name, |
929 | const char *annex, | |
930 | gdb_byte *readbuf, ULONGEST offset, | |
931 | LONGEST len, | |
932 | ULONGEST *xfered_len, | |
933 | struct packet_config *packet); | |
43c3a0e4 | 934 | |
3c69da40 | 935 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 936 | |
3c69da40 | 937 | bool vcont_r_supported (); |
43c3a0e4 | 938 | |
3c69da40 | 939 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 940 | |
3c69da40 | 941 | private: /* data fields */ |
43c3a0e4 | 942 | |
3c69da40 PA |
943 | /* The remote state. Don't reference this directly. Use the |
944 | get_remote_state method instead. */ | |
945 | remote_state m_remote_state; | |
43c3a0e4 PA |
946 | }; |
947 | ||
3c69da40 PA |
948 | static const target_info extended_remote_target_info = { |
949 | "extended-remote", | |
950 | N_("Extended remote serial target in gdb-specific protocol"), | |
951 | remote_doc | |
952 | }; | |
ea9c271d | 953 | |
3c69da40 PA |
954 | /* Set up the extended remote target by extending the standard remote |
955 | target and adding to it. */ | |
956 | ||
957 | class extended_remote_target final : public remote_target | |
ea9c271d | 958 | { |
9d6eea31 | 959 | public: |
3c69da40 PA |
960 | const target_info &info () const override |
961 | { return extended_remote_target_info; } | |
9d6eea31 | 962 | |
3c69da40 PA |
963 | /* Open an extended-remote connection. */ |
964 | static void open (const char *, int); | |
de44f5a7 | 965 | |
3c69da40 PA |
966 | bool can_create_inferior () override { return true; } |
967 | void create_inferior (const char *, const std::string &, | |
968 | char **, int) override; | |
9d6eea31 | 969 | |
3c69da40 | 970 | void detach (inferior *, int) override; |
9d6eea31 | 971 | |
3c69da40 PA |
972 | bool can_attach () override { return true; } |
973 | void attach (const char *, int) override; | |
be2a5f71 | 974 | |
3c69da40 PA |
975 | void post_attach (int) override; |
976 | bool supports_disable_randomization () override; | |
977 | }; | |
1e51243a | 978 | |
3c69da40 | 979 | /* Per-program-space data key. */ |
7b4a314f TT |
980 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
981 | remote_pspace_data; | |
2d717e4f | 982 | |
3c69da40 PA |
983 | /* The variable registered as the control variable used by the |
984 | remote exec-file commands. While the remote exec-file setting is | |
985 | per-program-space, the set/show machinery uses this as the | |
986 | location of the remote exec-file value. */ | |
987 | static char *remote_exec_file_var; | |
a6f3e723 | 988 | |
3c69da40 PA |
989 | /* The size to align memory write packets, when practical. The protocol |
990 | does not guarantee any alignment, and gdb will generate short | |
991 | writes and unaligned writes, but even as a best-effort attempt this | |
992 | can improve bulk transfers. For instance, if a write is misaligned | |
993 | relative to the target's data bus, the stub may need to make an extra | |
994 | round trip fetching data from the target. This doesn't make a | |
995 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 996 | |
3c69da40 PA |
997 | The alignment chosen is arbitrary; usually data bus width is |
998 | important here, not the possibly larger cache line size. */ | |
999 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1000 | |
3c69da40 | 1001 | /* Prototypes for local functions. */ |
74531fed | 1002 | |
3c69da40 | 1003 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1004 | |
3c69da40 | 1005 | static int stubhex (int ch); |
5d93a237 | 1006 | |
3c69da40 | 1007 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1008 | |
3c69da40 | 1009 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1010 | |
3c69da40 | 1011 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1012 | |
3c69da40 | 1013 | static void print_packet (const char *); |
747dc59d | 1014 | |
3c69da40 | 1015 | static int stub_unpack_int (char *buff, int fieldlength); |
5e4a05c4 | 1016 | |
3c69da40 | 1017 | struct packet_config; |
b73be471 | 1018 | |
3c69da40 | 1019 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1020 | |
3c69da40 PA |
1021 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1022 | int from_tty, | |
1023 | struct cmd_list_element *c, | |
1024 | const char *value); | |
8e88304f | 1025 | |
3c69da40 | 1026 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1027 | |
3c69da40 | 1028 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1029 | |
eefce37f | 1030 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1031 | |
05be00a8 | 1032 | static void remote_console_output (const char *msg); |
5965e028 | 1033 | |
3c69da40 | 1034 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1035 | |
5b6d1e4f | 1036 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1037 | |
3c69da40 | 1038 | /* For "remote". */ |
80152258 | 1039 | |
3c69da40 | 1040 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1041 | |
3c69da40 | 1042 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1043 | |
3c69da40 PA |
1044 | static struct cmd_list_element *remote_set_cmdlist; |
1045 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1046 | |
3c69da40 | 1047 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1048 | |
491144b5 | 1049 | static bool use_range_stepping = true; |
3c69da40 | 1050 | |
7aabaf9d SM |
1051 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1052 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1053 | { |
7aabaf9d SM |
1054 | std::string extra; |
1055 | std::string name; | |
1056 | int core = -1; | |
799a2abe | 1057 | |
f6327dcb KB |
1058 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1059 | sequence of bytes. */ | |
7aabaf9d | 1060 | gdb::byte_vector thread_handle; |
f6327dcb | 1061 | |
799a2abe | 1062 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1063 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1064 | |
1065 | /* This is set to the data address of the access causing the target | |
1066 | to stop for a watchpoint. */ | |
7aabaf9d | 1067 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
1068 | |
1069 | /* Fields used by the vCont action coalescing implemented in | |
1070 | remote_resume / remote_commit_resume. remote_resume stores each | |
1071 | thread's last resume request in these fields, so that a later | |
1072 | remote_commit_resume knows which is the proper action for this | |
1073 | thread to include in the vCont packet. */ | |
1074 | ||
1075 | /* True if the last target_resume call for this thread was a step | |
1076 | request, false if a continue request. */ | |
7aabaf9d | 1077 | int last_resume_step = 0; |
85ad3aaf PA |
1078 | |
1079 | /* The signal specified in the last target_resume call for this | |
1080 | thread. */ | |
7aabaf9d | 1081 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
1082 | |
1083 | /* Whether this thread was already vCont-resumed on the remote | |
1084 | side. */ | |
7aabaf9d | 1085 | int vcont_resumed = 0; |
dc146f7c VP |
1086 | }; |
1087 | ||
de44f5a7 | 1088 | remote_state::remote_state () |
8d64371b | 1089 | : buf (400) |
de44f5a7 | 1090 | { |
de44f5a7 PA |
1091 | } |
1092 | ||
1093 | remote_state::~remote_state () | |
1094 | { | |
1095 | xfree (this->last_pass_packet); | |
1096 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1097 | xfree (this->finished_object); |
1098 | xfree (this->finished_annex); | |
cf792862 TT |
1099 | } |
1100 | ||
35b1e5cc SS |
1101 | /* Utility: generate error from an incoming stub packet. */ |
1102 | static void | |
1103 | trace_error (char *buf) | |
1104 | { | |
1105 | if (*buf++ != 'E') | |
1106 | return; /* not an error msg */ | |
1107 | switch (*buf) | |
1108 | { | |
1109 | case '1': /* malformed packet error */ | |
1110 | if (*++buf == '0') /* general case: */ | |
1111 | error (_("remote.c: error in outgoing packet.")); | |
1112 | else | |
1113 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1114 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1115 | default: |
1116 | error (_("Target returns error code '%s'."), buf); | |
1117 | } | |
1118 | } | |
1119 | ||
1120 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1121 | |
6b8edb51 PA |
1122 | char * |
1123 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1124 | { |
b6bb3468 PA |
1125 | struct remote_state *rs = get_remote_state (); |
1126 | ||
35b1e5cc SS |
1127 | do /* Loop on reply from remote stub. */ |
1128 | { | |
1129 | char *buf; | |
a744cf53 | 1130 | |
0df8b418 | 1131 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1132 | getpkt (&rs->buf, 0); |
1133 | buf = rs->buf.data (); | |
ad91cd99 | 1134 | if (buf[0] == 'E') |
35b1e5cc | 1135 | trace_error (buf); |
61012eef | 1136 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1137 | { |
1138 | ULONGEST ul; | |
1139 | CORE_ADDR from, to, org_to; | |
256642e8 | 1140 | const char *p, *pp; |
dde08ee1 | 1141 | int adjusted_size = 0; |
7556d4a4 | 1142 | int relocated = 0; |
dde08ee1 PA |
1143 | |
1144 | p = buf + strlen ("qRelocInsn:"); | |
1145 | pp = unpack_varlen_hex (p, &ul); | |
1146 | if (*pp != ';') | |
cb91c06a | 1147 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1148 | from = ul; |
1149 | ||
1150 | p = pp + 1; | |
a9cbf802 | 1151 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1152 | to = ul; |
1153 | ||
1154 | org_to = to; | |
1155 | ||
a70b8144 | 1156 | try |
dde08ee1 | 1157 | { |
f5656ead | 1158 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1159 | relocated = 1; |
dde08ee1 | 1160 | } |
230d2906 | 1161 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1162 | { |
1163 | if (ex.error == MEMORY_ERROR) | |
1164 | { | |
1165 | /* Propagate memory errors silently back to the | |
1166 | target. The stub may have limited the range of | |
1167 | addresses we can write to, for example. */ | |
1168 | } | |
1169 | else | |
1170 | { | |
1171 | /* Something unexpectedly bad happened. Be verbose | |
1172 | so we can tell what, and propagate the error back | |
1173 | to the stub, so it doesn't get stuck waiting for | |
1174 | a response. */ | |
1175 | exception_fprintf (gdb_stderr, ex, | |
1176 | _("warning: relocating instruction: ")); | |
1177 | } | |
1178 | putpkt ("E01"); | |
1179 | } | |
1180 | ||
1181 | if (relocated) | |
dde08ee1 PA |
1182 | { |
1183 | adjusted_size = to - org_to; | |
1184 | ||
8d64371b | 1185 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1186 | putpkt (buf); |
1187 | } | |
dde08ee1 | 1188 | } |
ad91cd99 | 1189 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1190 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1191 | else | |
0df8b418 | 1192 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1193 | } |
1194 | while (1); | |
1195 | } | |
3c3bea1c | 1196 | |
9d6eea31 PA |
1197 | struct remote_arch_state * |
1198 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1199 | { |
43c3a0e4 PA |
1200 | remote_arch_state *rsa; |
1201 | ||
1202 | auto it = this->m_arch_states.find (gdbarch); | |
1203 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1204 | { |
43c3a0e4 PA |
1205 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1206 | std::forward_as_tuple (gdbarch), | |
1207 | std::forward_as_tuple (gdbarch)); | |
1208 | rsa = &p.first->second; | |
9d6eea31 PA |
1209 | |
1210 | /* Make sure that the packet buffer is plenty big enough for | |
1211 | this architecture. */ | |
8d64371b TT |
1212 | if (this->buf.size () < rsa->remote_packet_size) |
1213 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1214 | } |
43c3a0e4 PA |
1215 | else |
1216 | rsa = &it->second; | |
1217 | ||
1218 | return rsa; | |
d01949b6 AC |
1219 | } |
1220 | ||
0b83947e DJ |
1221 | /* Fetch the global remote target state. */ |
1222 | ||
6b8edb51 PA |
1223 | remote_state * |
1224 | remote_target::get_remote_state () | |
0b83947e DJ |
1225 | { |
1226 | /* Make sure that the remote architecture state has been | |
1227 | initialized, because doing so might reallocate rs->buf. Any | |
1228 | function which calls getpkt also needs to be mindful of changes | |
1229 | to rs->buf, but this call limits the number of places which run | |
1230 | into trouble. */ | |
3c69da40 | 1231 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1232 | |
3c69da40 | 1233 | return &m_remote_state; |
0b83947e DJ |
1234 | } |
1235 | ||
94585166 DB |
1236 | /* Fetch the remote exec-file from the current program space. */ |
1237 | ||
1238 | static const char * | |
1239 | get_remote_exec_file (void) | |
1240 | { | |
1241 | char *remote_exec_file; | |
1242 | ||
7b4a314f | 1243 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1244 | if (remote_exec_file == NULL) |
1245 | return ""; | |
1246 | ||
1247 | return remote_exec_file; | |
1248 | } | |
1249 | ||
1250 | /* Set the remote exec file for PSPACE. */ | |
1251 | ||
1252 | static void | |
1253 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1254 | const char *remote_exec_file) |
94585166 | 1255 | { |
7b4a314f | 1256 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1257 | |
1258 | xfree (old_file); | |
7b4a314f | 1259 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1260 | } |
1261 | ||
1262 | /* The "set/show remote exec-file" set command hook. */ | |
1263 | ||
1264 | static void | |
eb4c3f4a | 1265 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1266 | struct cmd_list_element *c) |
1267 | { | |
1268 | gdb_assert (remote_exec_file_var != NULL); | |
1269 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1270 | } | |
1271 | ||
1272 | /* The "set/show remote exec-file" show command hook. */ | |
1273 | ||
1274 | static void | |
1275 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1276 | struct cmd_list_element *cmd, const char *value) | |
1277 | { | |
acdf84a6 | 1278 | fprintf_filtered (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1279 | } |
1280 | ||
c21236dc PA |
1281 | static int |
1282 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1283 | { |
74ca34ce | 1284 | int regnum, num_remote_regs, offset; |
74ca34ce | 1285 | struct packet_reg **remote_regs; |
ea9c271d | 1286 | |
4a22f64d | 1287 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1288 | { |
c21236dc | 1289 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1290 | |
4a22f64d | 1291 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1292 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1293 | r->pnum = -1; | |
1294 | else | |
1295 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1296 | ||
b323314b | 1297 | r->regnum = regnum; |
74ca34ce DJ |
1298 | } |
1299 | ||
1300 | /* Define the g/G packet format as the contents of each register | |
1301 | with a remote protocol number, in order of ascending protocol | |
1302 | number. */ | |
1303 | ||
224c3ddb | 1304 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1305 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1306 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1307 | regnum++) |
c21236dc PA |
1308 | if (regs[regnum].pnum != -1) |
1309 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1310 | |
39ef2f62 CB |
1311 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1312 | [] (const packet_reg *a, const packet_reg *b) | |
1313 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1314 | |
1315 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1316 | { | |
1317 | remote_regs[regnum]->in_g_packet = 1; | |
1318 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1319 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1320 | } |
1321 | ||
c21236dc PA |
1322 | return offset; |
1323 | } | |
1324 | ||
1325 | /* Given the architecture described by GDBARCH, return the remote | |
1326 | protocol register's number and the register's offset in the g/G | |
1327 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1328 | If the target does not have a mapping for REGNUM, return false, | |
1329 | otherwise, return true. */ | |
1330 | ||
1331 | int | |
1332 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1333 | int *pnum, int *poffset) | |
1334 | { | |
c21236dc PA |
1335 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1336 | ||
b80406ac | 1337 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1338 | |
b80406ac | 1339 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1340 | |
1341 | *pnum = regs[regnum].pnum; | |
1342 | *poffset = regs[regnum].offset; | |
1343 | ||
c21236dc PA |
1344 | return *pnum != -1; |
1345 | } | |
1346 | ||
9d6eea31 | 1347 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1348 | { |
c21236dc PA |
1349 | /* Use the architecture to build a regnum<->pnum table, which will be |
1350 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1351 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1352 | |
74ca34ce DJ |
1353 | /* Record the maximum possible size of the g packet - it may turn out |
1354 | to be smaller. */ | |
9d6eea31 PA |
1355 | this->sizeof_g_packet |
1356 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1357 | |
0df8b418 | 1358 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1359 | remote stubs have a hardwired buffer size of 400 bytes |
1360 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1361 | as the maximum packet-size to ensure that the packet and an extra | |
1362 | NUL character can always fit in the buffer. This stops GDB | |
1363 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1364 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1365 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1366 | |
ea9c271d | 1367 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1368 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1369 | |
1370 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1371 | default, adjust the size accordingly. Remember that each byte is |
1372 | encoded as two characters. 32 is the overhead for the packet | |
1373 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1374 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1375 | little. */ |
9d6eea31 PA |
1376 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1377 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1378 | } |
1379 | ||
6b8edb51 PA |
1380 | /* Get a pointer to the current remote target. If not connected to a |
1381 | remote target, return NULL. */ | |
1382 | ||
1383 | static remote_target * | |
1384 | get_current_remote_target () | |
1385 | { | |
5b6d1e4f | 1386 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1387 | return dynamic_cast<remote_target *> (proc_target); |
1388 | } | |
1389 | ||
ea9c271d DJ |
1390 | /* Return the current allowed size of a remote packet. This is |
1391 | inferred from the current architecture, and should be used to | |
1392 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1393 | long |
1394 | remote_target::get_remote_packet_size () | |
ea9c271d | 1395 | { |
be2a5f71 | 1396 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1397 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1398 | |
be2a5f71 DJ |
1399 | if (rs->explicit_packet_size) |
1400 | return rs->explicit_packet_size; | |
1401 | ||
ea9c271d | 1402 | return rsa->remote_packet_size; |
d01949b6 AC |
1403 | } |
1404 | ||
ad10f812 | 1405 | static struct packet_reg * |
5cd63fda PA |
1406 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1407 | long regnum) | |
ad10f812 | 1408 | { |
5cd63fda | 1409 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1410 | return NULL; |
1411 | else | |
ad10f812 | 1412 | { |
ea9c271d | 1413 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1414 | |
b323314b AC |
1415 | gdb_assert (r->regnum == regnum); |
1416 | return r; | |
ad10f812 | 1417 | } |
ad10f812 AC |
1418 | } |
1419 | ||
1420 | static struct packet_reg * | |
5cd63fda PA |
1421 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1422 | LONGEST pnum) | |
ad10f812 | 1423 | { |
b323314b | 1424 | int i; |
a744cf53 | 1425 | |
5cd63fda | 1426 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1427 | { |
ea9c271d | 1428 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1429 | |
b323314b AC |
1430 | if (r->pnum == pnum) |
1431 | return r; | |
ad10f812 AC |
1432 | } |
1433 | return NULL; | |
d01949b6 AC |
1434 | } |
1435 | ||
9a7071a8 JB |
1436 | /* Allow the user to specify what sequence to send to the remote |
1437 | when he requests a program interruption: Although ^C is usually | |
1438 | what remote systems expect (this is the default, here), it is | |
1439 | sometimes preferable to send a break. On other systems such | |
1440 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1441 | is required in order to interrupt the execution. */ | |
1442 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1443 | const char interrupt_sequence_break[] = "BREAK"; | |
1444 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1445 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1446 | { |
1447 | interrupt_sequence_control_c, | |
1448 | interrupt_sequence_break, | |
1449 | interrupt_sequence_break_g, | |
1450 | NULL | |
1451 | }; | |
1452 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1453 | ||
1454 | static void | |
1455 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1456 | struct cmd_list_element *c, | |
1457 | const char *value) | |
1458 | { | |
1459 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1460 | fprintf_filtered (file, | |
1461 | _("Send the ASCII ETX character (Ctrl-c) " | |
1462 | "to the remote target to interrupt the " | |
1463 | "execution of the program.\n")); | |
1464 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1465 | fprintf_filtered (file, | |
1466 | _("send a break signal to the remote target " | |
1467 | "to interrupt the execution of the program.\n")); | |
1468 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1469 | fprintf_filtered (file, | |
1470 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1471 | "the remote target to interrupt the execution " | |
1472 | "of Linux kernel.\n")); | |
1473 | else | |
1474 | internal_error (__FILE__, __LINE__, | |
1475 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1476 | interrupt_sequence_mode); | |
1477 | } | |
6426a772 | 1478 | |
9a7071a8 JB |
1479 | /* This boolean variable specifies whether interrupt_sequence is sent |
1480 | to the remote target when gdb connects to it. | |
1481 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1482 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1483 | static bool interrupt_on_connect = false; |
c906108c | 1484 | |
9a7071a8 JB |
1485 | /* This variable is used to implement the "set/show remotebreak" commands. |
1486 | Since these commands are now deprecated in favor of "set/show remote | |
1487 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1488 | static bool remote_break; |
c906108c | 1489 | |
9a7071a8 | 1490 | static void |
eb4c3f4a | 1491 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1492 | { |
1493 | if (remote_break) | |
1494 | interrupt_sequence_mode = interrupt_sequence_break; | |
1495 | else | |
1496 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1497 | } | |
1498 | ||
1499 | static void | |
1500 | show_remotebreak (struct ui_file *file, int from_tty, | |
1501 | struct cmd_list_element *c, | |
1502 | const char *value) | |
1503 | { | |
1504 | } | |
1505 | ||
c906108c SS |
1506 | /* This variable sets the number of bits in an address that are to be |
1507 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1508 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1509 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1510 | initial implementation of remote.c restricted the address sent in | |
1511 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1512 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1513 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1514 | some remote targets this variable is principally provided to |
23860348 | 1515 | facilitate backward compatibility. */ |
c906108c | 1516 | |
883b9c6c | 1517 | static unsigned int remote_address_size; |
c906108c | 1518 | |
11cf8741 | 1519 | \f |
11cf8741 | 1520 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1521 | memory read/write packet. MIN (rsa->remote_packet_size, |
1522 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1523 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1524 | (speed up transfers). The variables ``preferred_*'' (the user |
1525 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1526 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1527 | |
1528 | struct memory_packet_config | |
1529 | { | |
a121b7c1 | 1530 | const char *name; |
11cf8741 JM |
1531 | long size; |
1532 | int fixed_p; | |
1533 | }; | |
1534 | ||
cc0be08f PA |
1535 | /* The default max memory-write-packet-size, when the setting is |
1536 | "fixed". The 16k is historical. (It came from older GDB's using | |
1537 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1538 | don't cope very well with large alloca calls.) */ | |
1539 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1540 | |
1541 | /* The minimum remote packet size for memory transfers. Ensures we | |
1542 | can write at least one byte. */ | |
1543 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1544 | ||
cc0be08f PA |
1545 | /* Get the memory packet size, assuming it is fixed. */ |
1546 | ||
1547 | static long | |
1548 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1549 | { | |
1550 | gdb_assert (config->fixed_p); | |
1551 | ||
1552 | if (config->size <= 0) | |
1553 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1554 | else | |
1555 | return config->size; | |
1556 | } | |
1557 | ||
11cf8741 JM |
1558 | /* Compute the current size of a read/write packet. Since this makes |
1559 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1560 | ||
6b8edb51 PA |
1561 | long |
1562 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1563 | { |
d01949b6 | 1564 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1565 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1566 | |
11cf8741 JM |
1567 | long what_they_get; |
1568 | if (config->fixed_p) | |
cc0be08f | 1569 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1570 | else |
1571 | { | |
ea9c271d | 1572 | what_they_get = get_remote_packet_size (); |
23860348 | 1573 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1574 | if (config->size > 0 |
1575 | && what_they_get > config->size) | |
1576 | what_they_get = config->size; | |
be2a5f71 DJ |
1577 | |
1578 | /* Limit it to the size of the targets ``g'' response unless we have | |
1579 | permission from the stub to use a larger packet size. */ | |
1580 | if (rs->explicit_packet_size == 0 | |
1581 | && rsa->actual_register_packet_size > 0 | |
1582 | && what_they_get > rsa->actual_register_packet_size) | |
1583 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1584 | } |
a5c0808e PA |
1585 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1586 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1587 | |
1588 | /* Make sure there is room in the global buffer for this packet | |
1589 | (including its trailing NUL byte). */ | |
8d64371b TT |
1590 | if (rs->buf.size () < what_they_get + 1) |
1591 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1592 | |
11cf8741 JM |
1593 | return what_they_get; |
1594 | } | |
1595 | ||
0df8b418 | 1596 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1597 | something really big then do a sanity check. */ |
11cf8741 JM |
1598 | |
1599 | static void | |
ac88e2de | 1600 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1601 | { |
1602 | int fixed_p = config->fixed_p; | |
1603 | long size = config->size; | |
a744cf53 | 1604 | |
11cf8741 | 1605 | if (args == NULL) |
8a3fe4f8 | 1606 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1607 | else if (strcmp (args, "hard") == 0 |
1608 | || strcmp (args, "fixed") == 0) | |
1609 | fixed_p = 1; | |
1610 | else if (strcmp (args, "soft") == 0 | |
1611 | || strcmp (args, "limit") == 0) | |
1612 | fixed_p = 0; | |
1613 | else | |
1614 | { | |
1615 | char *end; | |
a744cf53 | 1616 | |
11cf8741 JM |
1617 | size = strtoul (args, &end, 0); |
1618 | if (args == end) | |
8a3fe4f8 | 1619 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1620 | |
1621 | /* Instead of explicitly capping the size of a packet to or | |
1622 | disallowing it, the user is allowed to set the size to | |
1623 | something arbitrarily large. */ | |
11cf8741 | 1624 | } |
a5c0808e | 1625 | |
23860348 | 1626 | /* Extra checks? */ |
11cf8741 JM |
1627 | if (fixed_p && !config->fixed_p) |
1628 | { | |
cc0be08f PA |
1629 | /* So that the query shows the correct value. */ |
1630 | long query_size = (size <= 0 | |
1631 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1632 | : size); | |
1633 | ||
e2e0b3e5 AC |
1634 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1635 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1636 | config->name, query_size)) |
8a3fe4f8 | 1637 | error (_("Packet size not changed.")); |
11cf8741 | 1638 | } |
23860348 | 1639 | /* Update the config. */ |
11cf8741 JM |
1640 | config->fixed_p = fixed_p; |
1641 | config->size = size; | |
1642 | } | |
1643 | ||
1644 | static void | |
1645 | show_memory_packet_size (struct memory_packet_config *config) | |
1646 | { | |
cc0be08f PA |
1647 | if (config->size == 0) |
1648 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1649 | else | |
1650 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1651 | if (config->fixed_p) |
a3f17187 | 1652 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1653 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1654 | else |
cc0be08f | 1655 | { |
6b8edb51 | 1656 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1657 | |
6b8edb51 | 1658 | if (remote != NULL) |
cc0be08f | 1659 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1660 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1661 | else |
1662 | puts_filtered ("The actual limit will be further reduced " | |
1663 | "dependent on the target.\n"); | |
1664 | } | |
11cf8741 JM |
1665 | } |
1666 | ||
5b6d1e4f | 1667 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1668 | static struct memory_packet_config memory_write_packet_config = |
1669 | { | |
1670 | "memory-write-packet-size", | |
1671 | }; | |
1672 | ||
1673 | static void | |
ac88e2de | 1674 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1675 | { |
1676 | set_memory_packet_size (args, &memory_write_packet_config); | |
1677 | } | |
1678 | ||
1679 | static void | |
ac88e2de | 1680 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1681 | { |
1682 | show_memory_packet_size (&memory_write_packet_config); | |
1683 | } | |
1684 | ||
055303e2 AB |
1685 | /* Show the number of hardware watchpoints that can be used. */ |
1686 | ||
1687 | static void | |
1688 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1689 | struct cmd_list_element *c, | |
1690 | const char *value) | |
1691 | { | |
1692 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1693 | "watchpoints is %s.\n"), value); | |
1694 | } | |
1695 | ||
1696 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1697 | ||
1698 | static void | |
1699 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1700 | struct cmd_list_element *c, | |
1701 | const char *value) | |
1702 | { | |
1703 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1704 | "hardware watchpoint is %s.\n"), value); | |
1705 | } | |
1706 | ||
1707 | /* Show the number of hardware breakpoints that can be used. */ | |
1708 | ||
1709 | static void | |
1710 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1711 | struct cmd_list_element *c, | |
1712 | const char *value) | |
1713 | { | |
1714 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1715 | "breakpoints is %s.\n"), value); | |
1716 | } | |
1717 | ||
6cc8564b LM |
1718 | /* Controls the maximum number of characters to display in the debug output |
1719 | for each remote packet. The remaining characters are omitted. */ | |
1720 | ||
1721 | static int remote_packet_max_chars = 512; | |
1722 | ||
1723 | /* Show the maximum number of characters to display for each remote packet | |
1724 | when remote debugging is enabled. */ | |
1725 | ||
1726 | static void | |
1727 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1728 | struct cmd_list_element *c, | |
1729 | const char *value) | |
1730 | { | |
1731 | fprintf_filtered (file, _("Number of remote packet characters to " | |
1732 | "display is %s.\n"), value); | |
1733 | } | |
1734 | ||
6b8edb51 PA |
1735 | long |
1736 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1737 | { |
1738 | return get_memory_packet_size (&memory_write_packet_config); | |
1739 | } | |
1740 | ||
5b6d1e4f | 1741 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1742 | static struct memory_packet_config memory_read_packet_config = |
1743 | { | |
1744 | "memory-read-packet-size", | |
1745 | }; | |
1746 | ||
1747 | static void | |
ac88e2de | 1748 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1749 | { |
1750 | set_memory_packet_size (args, &memory_read_packet_config); | |
1751 | } | |
1752 | ||
1753 | static void | |
ac88e2de | 1754 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1755 | { |
1756 | show_memory_packet_size (&memory_read_packet_config); | |
1757 | } | |
1758 | ||
6b8edb51 PA |
1759 | long |
1760 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1761 | { |
1762 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1763 | |
11cf8741 JM |
1764 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1765 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1766 | increased beyond this. */ |
1767 | if (size > get_remote_packet_size ()) | |
1768 | size = get_remote_packet_size (); | |
11cf8741 JM |
1769 | return size; |
1770 | } | |
1771 | ||
11cf8741 | 1772 | \f |
5a2468f5 | 1773 | |
5a2468f5 JM |
1774 | struct packet_config |
1775 | { | |
bb572ddd DJ |
1776 | const char *name; |
1777 | const char *title; | |
4082afcc PA |
1778 | |
1779 | /* If auto, GDB auto-detects support for this packet or feature, | |
1780 | either through qSupported, or by trying the packet and looking | |
1781 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1782 | packet. If false, the packet is disabled. Configs that don't |
1783 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1784 | enum auto_boolean detect; |
4082afcc PA |
1785 | |
1786 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1787 | enum packet_support support; |
1788 | }; | |
1789 | ||
4082afcc PA |
1790 | static enum packet_support packet_config_support (struct packet_config *config); |
1791 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1792 | |
1793 | static void | |
fba45db2 | 1794 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1795 | { |
a121b7c1 | 1796 | const char *support = "internal-error"; |
a744cf53 | 1797 | |
4082afcc | 1798 | switch (packet_config_support (config)) |
5a2468f5 JM |
1799 | { |
1800 | case PACKET_ENABLE: | |
1801 | support = "enabled"; | |
1802 | break; | |
1803 | case PACKET_DISABLE: | |
1804 | support = "disabled"; | |
1805 | break; | |
1806 | case PACKET_SUPPORT_UNKNOWN: | |
1807 | support = "unknown"; | |
1808 | break; | |
1809 | } | |
1810 | switch (config->detect) | |
1811 | { | |
7f19b9a2 | 1812 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1813 | printf_filtered (_("Support for the `%s' packet " |
1814 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1815 | config->name, support); |
5a2468f5 | 1816 | break; |
7f19b9a2 AC |
1817 | case AUTO_BOOLEAN_TRUE: |
1818 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1819 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1820 | config->name, support); | |
8e248173 | 1821 | break; |
5a2468f5 JM |
1822 | } |
1823 | } | |
1824 | ||
1825 | static void | |
bb572ddd DJ |
1826 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1827 | const char *title, int legacy) | |
d471ea57 | 1828 | { |
5a2468f5 JM |
1829 | char *set_doc; |
1830 | char *show_doc; | |
d471ea57 | 1831 | char *cmd_name; |
3ed07be4 | 1832 | |
5a2468f5 JM |
1833 | config->name = name; |
1834 | config->title = title; | |
590042fc | 1835 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", |
b435e160 | 1836 | name, title); |
3e43a32a | 1837 | show_doc = xstrprintf ("Show current use of remote " |
590042fc | 1838 | "protocol `%s' (%s) packet.", |
b435e160 | 1839 | name, title); |
d471ea57 | 1840 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1841 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1842 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1843 | &config->detect, set_doc, |
1844 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1845 | NULL, |
bb572ddd DJ |
1846 | show_remote_protocol_packet_cmd, |
1847 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1848 | /* The command code copies the documentation strings. */ |
1849 | xfree (set_doc); | |
1850 | xfree (show_doc); | |
23860348 | 1851 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1852 | if (legacy) |
1853 | { | |
1854 | char *legacy_name; | |
a744cf53 | 1855 | |
b435e160 | 1856 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1857 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1858 | &remote_set_cmdlist); |
d471ea57 | 1859 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1860 | &remote_show_cmdlist); |
d471ea57 | 1861 | } |
5a2468f5 JM |
1862 | } |
1863 | ||
d471ea57 | 1864 | static enum packet_result |
a76d924d | 1865 | packet_check_result (const char *buf) |
5a2468f5 | 1866 | { |
d471ea57 | 1867 | if (buf[0] != '\0') |
5a2468f5 | 1868 | { |
d471ea57 | 1869 | /* The stub recognized the packet request. Check that the |
23860348 | 1870 | operation succeeded. */ |
a76d924d DJ |
1871 | if (buf[0] == 'E' |
1872 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1873 | && buf[3] == '\0') | |
85102364 | 1874 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
1875 | return PACKET_ERROR; |
1876 | ||
1877 | /* Always treat "E." as an error. This will be used for | |
1878 | more verbose error messages, such as E.memtypes. */ | |
1879 | if (buf[0] == 'E' && buf[1] == '.') | |
1880 | return PACKET_ERROR; | |
1881 | ||
1882 | /* The packet may or may not be OK. Just assume it is. */ | |
1883 | return PACKET_OK; | |
1884 | } | |
1885 | else | |
1886 | /* The stub does not support the packet. */ | |
1887 | return PACKET_UNKNOWN; | |
1888 | } | |
1889 | ||
8d64371b TT |
1890 | static enum packet_result |
1891 | packet_check_result (const gdb::char_vector &buf) | |
1892 | { | |
1893 | return packet_check_result (buf.data ()); | |
1894 | } | |
1895 | ||
a76d924d DJ |
1896 | static enum packet_result |
1897 | packet_ok (const char *buf, struct packet_config *config) | |
1898 | { | |
1899 | enum packet_result result; | |
1900 | ||
4082afcc PA |
1901 | if (config->detect != AUTO_BOOLEAN_TRUE |
1902 | && config->support == PACKET_DISABLE) | |
1903 | internal_error (__FILE__, __LINE__, | |
1904 | _("packet_ok: attempt to use a disabled packet")); | |
1905 | ||
a76d924d DJ |
1906 | result = packet_check_result (buf); |
1907 | switch (result) | |
1908 | { | |
1909 | case PACKET_OK: | |
1910 | case PACKET_ERROR: | |
1911 | /* The stub recognized the packet request. */ | |
4082afcc | 1912 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1913 | { |
d471ea57 AC |
1914 | if (remote_debug) |
1915 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1916 | "Packet %s (%s) is supported\n", |
1917 | config->name, config->title); | |
d471ea57 | 1918 | config->support = PACKET_ENABLE; |
d471ea57 | 1919 | } |
a76d924d DJ |
1920 | break; |
1921 | case PACKET_UNKNOWN: | |
23860348 | 1922 | /* The stub does not support the packet. */ |
4082afcc PA |
1923 | if (config->detect == AUTO_BOOLEAN_AUTO |
1924 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1925 | { |
4082afcc PA |
1926 | /* If the stub previously indicated that the packet was |
1927 | supported then there is a protocol error. */ | |
1928 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1929 | config->name, config->title); | |
1930 | } | |
1931 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1932 | { | |
1933 | /* The user set it wrong. */ | |
1934 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1935 | config->name, config->title); | |
d471ea57 | 1936 | } |
4082afcc PA |
1937 | |
1938 | if (remote_debug) | |
1939 | fprintf_unfiltered (gdb_stdlog, | |
1940 | "Packet %s (%s) is NOT supported\n", | |
1941 | config->name, config->title); | |
1942 | config->support = PACKET_DISABLE; | |
a76d924d | 1943 | break; |
5a2468f5 | 1944 | } |
a76d924d DJ |
1945 | |
1946 | return result; | |
5a2468f5 JM |
1947 | } |
1948 | ||
8d64371b TT |
1949 | static enum packet_result |
1950 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
1951 | { | |
1952 | return packet_ok (buf.data (), config); | |
1953 | } | |
1954 | ||
444abaca DJ |
1955 | enum { |
1956 | PACKET_vCont = 0, | |
1957 | PACKET_X, | |
1958 | PACKET_qSymbol, | |
1959 | PACKET_P, | |
1960 | PACKET_p, | |
1961 | PACKET_Z0, | |
1962 | PACKET_Z1, | |
1963 | PACKET_Z2, | |
1964 | PACKET_Z3, | |
1965 | PACKET_Z4, | |
15a201c8 | 1966 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1967 | PACKET_vFile_open, |
1968 | PACKET_vFile_pread, | |
1969 | PACKET_vFile_pwrite, | |
1970 | PACKET_vFile_close, | |
1971 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1972 | PACKET_vFile_readlink, |
0a93529c | 1973 | PACKET_vFile_fstat, |
0876f84a | 1974 | PACKET_qXfer_auxv, |
23181151 | 1975 | PACKET_qXfer_features, |
c78fa86a | 1976 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1977 | PACKET_qXfer_libraries, |
2268b414 | 1978 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1979 | PACKET_qXfer_memory_map, |
07e059b5 | 1980 | PACKET_qXfer_osdata, |
dc146f7c | 1981 | PACKET_qXfer_threads, |
0fb4aa4b | 1982 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1983 | PACKET_qXfer_traceframe_info, |
169081d0 | 1984 | PACKET_qXfer_uib, |
711e434b | 1985 | PACKET_qGetTIBAddr, |
444abaca | 1986 | PACKET_qGetTLSAddr, |
be2a5f71 | 1987 | PACKET_qSupported, |
bd3eecc3 | 1988 | PACKET_qTStatus, |
89be2091 | 1989 | PACKET_QPassSignals, |
82075af2 | 1990 | PACKET_QCatchSyscalls, |
9b224c5e | 1991 | PACKET_QProgramSignals, |
bc3b087d | 1992 | PACKET_QSetWorkingDir, |
aefd8b33 | 1993 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1994 | PACKET_QEnvironmentHexEncoded, |
1995 | PACKET_QEnvironmentReset, | |
1996 | PACKET_QEnvironmentUnset, | |
936d2992 | 1997 | PACKET_qCRC, |
08388c79 | 1998 | PACKET_qSearch_memory, |
2d717e4f DJ |
1999 | PACKET_vAttach, |
2000 | PACKET_vRun, | |
a6f3e723 | 2001 | PACKET_QStartNoAckMode, |
82f73884 | 2002 | PACKET_vKill, |
4aa995e1 PA |
2003 | PACKET_qXfer_siginfo_read, |
2004 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2005 | PACKET_qAttached, |
4082afcc PA |
2006 | |
2007 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2008 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2009 | |
2010 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2011 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2012 | |
2013 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2014 | PACKET_BreakpointCommands, |
4082afcc PA |
2015 | |
2016 | /* Support for fast tracepoints. */ | |
7a697b8d | 2017 | PACKET_FastTracepoints, |
4082afcc PA |
2018 | |
2019 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2020 | PACKET_StaticTracepoints, |
4082afcc PA |
2021 | |
2022 | /* Support for installing tracepoints while a trace experiment is | |
2023 | running. */ | |
1e4d1764 | 2024 | PACKET_InstallInTrace, |
4082afcc | 2025 | |
40ab02ce MS |
2026 | PACKET_bc, |
2027 | PACKET_bs, | |
409873ef | 2028 | PACKET_TracepointSource, |
d914c394 | 2029 | PACKET_QAllow, |
78d85199 | 2030 | PACKET_qXfer_fdpic, |
03583c20 | 2031 | PACKET_QDisableRandomization, |
d1feda86 | 2032 | PACKET_QAgent, |
f6f899bf | 2033 | PACKET_QTBuffer_size, |
9accd112 MM |
2034 | PACKET_Qbtrace_off, |
2035 | PACKET_Qbtrace_bts, | |
b20a6524 | 2036 | PACKET_Qbtrace_pt, |
9accd112 | 2037 | PACKET_qXfer_btrace, |
4082afcc PA |
2038 | |
2039 | /* Support for the QNonStop packet. */ | |
2040 | PACKET_QNonStop, | |
2041 | ||
65706a29 PA |
2042 | /* Support for the QThreadEvents packet. */ |
2043 | PACKET_QThreadEvents, | |
2044 | ||
4082afcc PA |
2045 | /* Support for multi-process extensions. */ |
2046 | PACKET_multiprocess_feature, | |
2047 | ||
2048 | /* Support for enabling and disabling tracepoints while a trace | |
2049 | experiment is running. */ | |
2050 | PACKET_EnableDisableTracepoints_feature, | |
2051 | ||
2052 | /* Support for collecting strings using the tracenz bytecode. */ | |
2053 | PACKET_tracenz_feature, | |
2054 | ||
2055 | /* Support for continuing to run a trace experiment while GDB is | |
2056 | disconnected. */ | |
2057 | PACKET_DisconnectedTracing_feature, | |
2058 | ||
2059 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2060 | PACKET_augmented_libraries_svr4_read_feature, | |
2061 | ||
f4abbc16 MM |
2062 | /* Support for the qXfer:btrace-conf:read packet. */ |
2063 | PACKET_qXfer_btrace_conf, | |
2064 | ||
d33501a5 MM |
2065 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2066 | PACKET_Qbtrace_conf_bts_size, | |
2067 | ||
f7e6eed5 PA |
2068 | /* Support for swbreak+ feature. */ |
2069 | PACKET_swbreak_feature, | |
2070 | ||
2071 | /* Support for hwbreak+ feature. */ | |
2072 | PACKET_hwbreak_feature, | |
2073 | ||
89245bc0 DB |
2074 | /* Support for fork events. */ |
2075 | PACKET_fork_event_feature, | |
2076 | ||
2077 | /* Support for vfork events. */ | |
2078 | PACKET_vfork_event_feature, | |
2079 | ||
b20a6524 MM |
2080 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2081 | PACKET_Qbtrace_conf_pt_size, | |
2082 | ||
94585166 DB |
2083 | /* Support for exec events. */ |
2084 | PACKET_exec_event_feature, | |
2085 | ||
750ce8d1 YQ |
2086 | /* Support for query supported vCont actions. */ |
2087 | PACKET_vContSupported, | |
2088 | ||
de979965 PA |
2089 | /* Support remote CTRL-C. */ |
2090 | PACKET_vCtrlC, | |
2091 | ||
f2faf941 PA |
2092 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2093 | PACKET_no_resumed, | |
2094 | ||
444abaca DJ |
2095 | PACKET_MAX |
2096 | }; | |
506fb367 | 2097 | |
5b6d1e4f PA |
2098 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2099 | assuming all remote targets are the same server (thus all support | |
2100 | the same packets). */ | |
444abaca | 2101 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2102 | |
f7e6eed5 PA |
2103 | /* Returns the packet's corresponding "set remote foo-packet" command |
2104 | state. See struct packet_config for more details. */ | |
2105 | ||
2106 | static enum auto_boolean | |
2107 | packet_set_cmd_state (int packet) | |
2108 | { | |
2109 | return remote_protocol_packets[packet].detect; | |
2110 | } | |
2111 | ||
4082afcc PA |
2112 | /* Returns whether a given packet or feature is supported. This takes |
2113 | into account the state of the corresponding "set remote foo-packet" | |
2114 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2115 | |
4082afcc PA |
2116 | static enum packet_support |
2117 | packet_config_support (struct packet_config *config) | |
2118 | { | |
2119 | switch (config->detect) | |
444abaca | 2120 | { |
4082afcc PA |
2121 | case AUTO_BOOLEAN_TRUE: |
2122 | return PACKET_ENABLE; | |
2123 | case AUTO_BOOLEAN_FALSE: | |
2124 | return PACKET_DISABLE; | |
2125 | case AUTO_BOOLEAN_AUTO: | |
2126 | return config->support; | |
2127 | default: | |
2128 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2129 | } |
4082afcc PA |
2130 | } |
2131 | ||
2132 | /* Same as packet_config_support, but takes the packet's enum value as | |
2133 | argument. */ | |
2134 | ||
2135 | static enum packet_support | |
2136 | packet_support (int packet) | |
2137 | { | |
2138 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2139 | ||
2140 | return packet_config_support (config); | |
dc8acb97 MS |
2141 | } |
2142 | ||
5a2468f5 | 2143 | static void |
444abaca DJ |
2144 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2145 | struct cmd_list_element *c, | |
2146 | const char *value) | |
5a2468f5 | 2147 | { |
444abaca | 2148 | struct packet_config *packet; |
5a2468f5 | 2149 | |
444abaca DJ |
2150 | for (packet = remote_protocol_packets; |
2151 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2152 | packet++) | |
2153 | { | |
2154 | if (&packet->detect == c->var) | |
2155 | { | |
2156 | show_packet_config_cmd (packet); | |
2157 | return; | |
2158 | } | |
2159 | } | |
9b20d036 | 2160 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2161 | c->name); |
5a2468f5 JM |
2162 | } |
2163 | ||
d471ea57 AC |
2164 | /* Should we try one of the 'Z' requests? */ |
2165 | ||
2166 | enum Z_packet_type | |
2167 | { | |
2168 | Z_PACKET_SOFTWARE_BP, | |
2169 | Z_PACKET_HARDWARE_BP, | |
2170 | Z_PACKET_WRITE_WP, | |
2171 | Z_PACKET_READ_WP, | |
2172 | Z_PACKET_ACCESS_WP, | |
2173 | NR_Z_PACKET_TYPES | |
2174 | }; | |
96baa820 | 2175 | |
d471ea57 | 2176 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2177 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2178 | |
7f19b9a2 | 2179 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2180 | |
2181 | static void | |
eb4c3f4a | 2182 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2183 | struct cmd_list_element *c) |
96baa820 | 2184 | { |
d471ea57 | 2185 | int i; |
a744cf53 | 2186 | |
d471ea57 | 2187 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2188 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2189 | } |
2190 | ||
2191 | static void | |
08546159 AC |
2192 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2193 | struct cmd_list_element *c, | |
2194 | const char *value) | |
96baa820 | 2195 | { |
d471ea57 | 2196 | int i; |
a744cf53 | 2197 | |
d471ea57 AC |
2198 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2199 | { | |
444abaca | 2200 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2201 | } |
96baa820 JM |
2202 | } |
2203 | ||
4082afcc PA |
2204 | /* Returns true if the multi-process extensions are in effect. */ |
2205 | ||
2206 | static int | |
2207 | remote_multi_process_p (struct remote_state *rs) | |
2208 | { | |
2209 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2210 | } | |
2211 | ||
de0d863e DB |
2212 | /* Returns true if fork events are supported. */ |
2213 | ||
2214 | static int | |
2215 | remote_fork_event_p (struct remote_state *rs) | |
2216 | { | |
2217 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2218 | } | |
2219 | ||
c269dbdb DB |
2220 | /* Returns true if vfork events are supported. */ |
2221 | ||
2222 | static int | |
2223 | remote_vfork_event_p (struct remote_state *rs) | |
2224 | { | |
2225 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2226 | } | |
2227 | ||
d46addbb DB |
2228 | /* Returns true if exec events are supported. */ |
2229 | ||
2230 | static int | |
2231 | remote_exec_event_p (struct remote_state *rs) | |
2232 | { | |
2233 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2234 | } | |
2235 | ||
cbb8991c DB |
2236 | /* Insert fork catchpoint target routine. If fork events are enabled |
2237 | then return success, nothing more to do. */ | |
2238 | ||
f6ac5f3d PA |
2239 | int |
2240 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2241 | { |
2242 | struct remote_state *rs = get_remote_state (); | |
2243 | ||
2244 | return !remote_fork_event_p (rs); | |
2245 | } | |
2246 | ||
2247 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2248 | return success. */ | |
2249 | ||
f6ac5f3d PA |
2250 | int |
2251 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2252 | { |
2253 | return 0; | |
2254 | } | |
2255 | ||
2256 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2257 | then return success, nothing more to do. */ | |
2258 | ||
f6ac5f3d PA |
2259 | int |
2260 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2261 | { |
2262 | struct remote_state *rs = get_remote_state (); | |
2263 | ||
2264 | return !remote_vfork_event_p (rs); | |
2265 | } | |
2266 | ||
2267 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2268 | return success. */ | |
2269 | ||
f6ac5f3d PA |
2270 | int |
2271 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2272 | { |
2273 | return 0; | |
2274 | } | |
2275 | ||
d46addbb DB |
2276 | /* Insert exec catchpoint target routine. If exec events are |
2277 | enabled, just return success. */ | |
2278 | ||
f6ac5f3d PA |
2279 | int |
2280 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2281 | { |
2282 | struct remote_state *rs = get_remote_state (); | |
2283 | ||
2284 | return !remote_exec_event_p (rs); | |
2285 | } | |
2286 | ||
2287 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2288 | return success. */ | |
2289 | ||
f6ac5f3d PA |
2290 | int |
2291 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2292 | { |
2293 | return 0; | |
2294 | } | |
2295 | ||
c906108c SS |
2296 | \f |
2297 | ||
ffdd69cf TT |
2298 | /* Take advantage of the fact that the TID field is not used, to tag |
2299 | special ptids with it set to != 0. */ | |
2300 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2301 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2302 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2303 | |
0b16c5cf PA |
2304 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2305 | detach instead of killing it when bailing out). */ | |
2306 | ||
6b8edb51 PA |
2307 | int |
2308 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2309 | { |
2310 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2311 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2312 | |
4082afcc | 2313 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2314 | return 0; |
2315 | ||
2316 | if (remote_multi_process_p (rs)) | |
8d64371b | 2317 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2318 | else |
8d64371b | 2319 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2320 | |
2321 | putpkt (rs->buf); | |
8d64371b | 2322 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2323 | |
2324 | switch (packet_ok (rs->buf, | |
1554e9be | 2325 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2326 | { |
2327 | case PACKET_OK: | |
8d64371b | 2328 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2329 | return 1; |
2330 | break; | |
2331 | case PACKET_ERROR: | |
8d64371b | 2332 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2333 | break; |
2334 | case PACKET_UNKNOWN: | |
2335 | break; | |
2336 | } | |
2337 | ||
2338 | return 0; | |
2339 | } | |
2340 | ||
49c62f2e PA |
2341 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2342 | has been invented by GDB, instead of reported by the target. Since | |
2343 | we can be connected to a remote system before before knowing about | |
2344 | any inferior, mark the target with execution when we find the first | |
2345 | inferior. If ATTACHED is 1, then we had just attached to this | |
2346 | inferior. If it is 0, then we just created this inferior. If it | |
2347 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2348 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2349 | attempt to open this inferior's executable as the main executable | |
2350 | if no main executable is open already. */ | |
1941c569 | 2351 | |
6b8edb51 | 2352 | inferior * |
9ab8741a | 2353 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2354 | int try_open_exec) |
1941c569 | 2355 | { |
1941c569 PA |
2356 | struct inferior *inf; |
2357 | ||
0b16c5cf PA |
2358 | /* Check whether this process we're learning about is to be |
2359 | considered attached, or if is to be considered to have been | |
2360 | spawned by the stub. */ | |
2361 | if (attached == -1) | |
2362 | attached = remote_query_attached (pid); | |
2363 | ||
f5656ead | 2364 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2365 | { |
2366 | /* If the target shares code across all inferiors, then every | |
2367 | attach adds a new inferior. */ | |
2368 | inf = add_inferior (pid); | |
2369 | ||
2370 | /* ... and every inferior is bound to the same program space. | |
2371 | However, each inferior may still have its own address | |
2372 | space. */ | |
2373 | inf->aspace = maybe_new_address_space (); | |
2374 | inf->pspace = current_program_space; | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | /* In the traditional debugging scenario, there's a 1-1 match | |
2379 | between program/address spaces. We simply bind the inferior | |
2380 | to the program space's address space. */ | |
2381 | inf = current_inferior (); | |
78f2c40a PA |
2382 | |
2383 | /* However, if the current inferior is already bound to a | |
2384 | process, find some other empty inferior. */ | |
2385 | if (inf->pid != 0) | |
2386 | { | |
2387 | inf = nullptr; | |
2388 | for (inferior *it : all_inferiors ()) | |
2389 | if (it->pid == 0) | |
2390 | { | |
2391 | inf = it; | |
2392 | break; | |
2393 | } | |
2394 | } | |
2395 | if (inf == nullptr) | |
2396 | { | |
2397 | /* Since all inferiors were already bound to a process, add | |
2398 | a new inferior. */ | |
2399 | inf = add_inferior_with_spaces (); | |
2400 | } | |
2401 | switch_to_inferior_no_thread (inf); | |
5b6d1e4f | 2402 | push_target (this); |
6c95b8df PA |
2403 | inferior_appeared (inf, pid); |
2404 | } | |
1941c569 | 2405 | |
0b16c5cf | 2406 | inf->attach_flag = attached; |
49c62f2e | 2407 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2408 | |
1b6e6f5c GB |
2409 | /* If no main executable is currently open then attempt to |
2410 | open the file that was executed to create this inferior. */ | |
835205d0 | 2411 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2412 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2413 | |
1941c569 PA |
2414 | return inf; |
2415 | } | |
2416 | ||
7aabaf9d | 2417 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2418 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2419 | ptid_t ptid); | |
85ad3aaf | 2420 | |
1941c569 PA |
2421 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2422 | according to RUNNING. */ | |
2423 | ||
00431a78 | 2424 | thread_info * |
6b8edb51 | 2425 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2426 | { |
b7ea362b | 2427 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2428 | struct thread_info *thread; |
b7ea362b PA |
2429 | |
2430 | /* GDB historically didn't pull threads in the initial connection | |
2431 | setup. If the remote target doesn't even have a concept of | |
2432 | threads (e.g., a bare-metal target), even if internally we | |
2433 | consider that a single-threaded target, mentioning a new thread | |
2434 | might be confusing to the user. Be silent then, preserving the | |
2435 | age old behavior. */ | |
2436 | if (rs->starting_up) | |
5b6d1e4f | 2437 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2438 | else |
5b6d1e4f | 2439 | thread = add_thread (this, ptid); |
1941c569 | 2440 | |
7aabaf9d | 2441 | get_remote_thread_info (thread)->vcont_resumed = executing; |
5b6d1e4f PA |
2442 | set_executing (this, ptid, executing); |
2443 | set_running (this, ptid, running); | |
00431a78 PA |
2444 | |
2445 | return thread; | |
1941c569 PA |
2446 | } |
2447 | ||
2448 | /* Come here when we learn about a thread id from the remote target. | |
2449 | It may be the first time we hear about such thread, so take the | |
2450 | opportunity to add it to GDB's thread list. In case this is the | |
2451 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2452 | GDB's inferior list as well. EXECUTING indicates whether the |
2453 | thread is (internally) executing or stopped. */ | |
1941c569 | 2454 | |
6b8edb51 PA |
2455 | void |
2456 | remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) | |
1941c569 | 2457 | { |
0d5b594f PA |
2458 | /* In non-stop mode, we assume new found threads are (externally) |
2459 | running until proven otherwise with a stop reply. In all-stop, | |
2460 | we can only get here if all threads are stopped. */ | |
2461 | int running = target_is_non_stop_p () ? 1 : 0; | |
2462 | ||
c906108c SS |
2463 | /* If this is a new thread, add it to GDB's thread list. |
2464 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2465 | |
5b6d1e4f | 2466 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2467 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2468 | { |
2469 | /* We're seeing an event on a thread id we knew had exited. | |
2470 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2471 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2472 | return; |
2473 | } | |
2474 | ||
5b6d1e4f | 2475 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2476 | { |
1941c569 | 2477 | struct inferior *inf = NULL; |
e99b03dc | 2478 | int pid = currthread.pid (); |
1941c569 | 2479 | |
0e998d96 | 2480 | if (inferior_ptid.is_pid () |
e99b03dc | 2481 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2482 | { |
2483 | /* inferior_ptid has no thread member yet. This can happen | |
2484 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2485 | stub doesn't support qC. This is the first stop reported | |
2486 | after an attach, so this is the main thread. Update the | |
2487 | ptid in the thread list. */ | |
5b6d1e4f PA |
2488 | if (in_thread_list (this, ptid_t (pid))) |
2489 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2490 | else |
2491 | { | |
0d5b594f | 2492 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
2493 | inferior_ptid = currthread; |
2494 | } | |
dc146f7c | 2495 | return; |
c0a2216e | 2496 | } |
82f73884 | 2497 | |
d7e15655 | 2498 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2499 | { |
2500 | /* inferior_ptid is not set yet. This can happen with the | |
2501 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2502 | doesn't support qC. This is the first stop reported | |
2503 | after an attach, so this is the main thread. Update the | |
2504 | ptid in the thread list. */ | |
5b6d1e4f | 2505 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2506 | return; |
c0a2216e | 2507 | } |
82f73884 | 2508 | |
29c87f7f PA |
2509 | /* When connecting to a target remote, or to a target |
2510 | extended-remote which already was debugging an inferior, we | |
2511 | may not know about it yet. Add it before adding its child | |
2512 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2513 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2514 | { |
2515 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2516 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2517 | |
2518 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2519 | currthread.pid (), -1, 1); |
49c62f2e | 2520 | } |
29c87f7f | 2521 | |
82f73884 | 2522 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2523 | thread_info *new_thr |
2524 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2525 | |
2526 | /* If we found a new inferior, let the common code do whatever | |
2527 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2528 | breakpoints), unless we're just setting up an all-stop |
2529 | connection. */ | |
1941c569 | 2530 | if (inf != NULL) |
b7ea362b PA |
2531 | { |
2532 | struct remote_state *rs = get_remote_state (); | |
2533 | ||
6efcd9a8 | 2534 | if (!rs->starting_up) |
00431a78 | 2535 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2536 | } |
c0a2216e | 2537 | } |
c906108c SS |
2538 | } |
2539 | ||
85ad3aaf | 2540 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2541 | |
7aabaf9d SM |
2542 | static remote_thread_info * |
2543 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2544 | { |
85ad3aaf | 2545 | gdb_assert (thread != NULL); |
dc146f7c | 2546 | |
85ad3aaf | 2547 | if (thread->priv == NULL) |
7aabaf9d | 2548 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2549 | |
7aabaf9d | 2550 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2551 | } |
2552 | ||
5b6d1e4f PA |
2553 | /* Return PTID's private thread data, creating it if necessary. */ |
2554 | ||
7aabaf9d | 2555 | static remote_thread_info * |
5b6d1e4f | 2556 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2557 | { |
5b6d1e4f | 2558 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2559 | return get_remote_thread_info (thr); |
dc146f7c VP |
2560 | } |
2561 | ||
74531fed PA |
2562 | /* Call this function as a result of |
2563 | 1) A halt indication (T packet) containing a thread id | |
2564 | 2) A direct query of currthread | |
0df8b418 | 2565 | 3) Successful execution of set thread */ |
74531fed PA |
2566 | |
2567 | static void | |
47f8a51d | 2568 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2569 | { |
47f8a51d | 2570 | rs->general_thread = currthread; |
74531fed PA |
2571 | } |
2572 | ||
89be2091 DJ |
2573 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2574 | it can simply pass through to the inferior without reporting. */ | |
2575 | ||
f6ac5f3d | 2576 | void |
adc6a863 | 2577 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2578 | { |
4082afcc | 2579 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2580 | { |
2581 | char *pass_packet, *p; | |
adc6a863 | 2582 | int count = 0; |
747dc59d | 2583 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2584 | |
adc6a863 PA |
2585 | gdb_assert (pass_signals.size () < 256); |
2586 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2587 | { |
2455069d | 2588 | if (pass_signals[i]) |
89be2091 DJ |
2589 | count++; |
2590 | } | |
224c3ddb | 2591 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2592 | strcpy (pass_packet, "QPassSignals:"); |
2593 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2594 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2595 | { |
2455069d | 2596 | if (pass_signals[i]) |
89be2091 DJ |
2597 | { |
2598 | if (i >= 16) | |
2599 | *p++ = tohex (i >> 4); | |
2600 | *p++ = tohex (i & 15); | |
2601 | if (count) | |
2602 | *p++ = ';'; | |
2603 | else | |
2604 | break; | |
2605 | count--; | |
2606 | } | |
2607 | } | |
2608 | *p = 0; | |
747dc59d | 2609 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2610 | { |
89be2091 | 2611 | putpkt (pass_packet); |
8d64371b | 2612 | getpkt (&rs->buf, 0); |
8dc5b319 | 2613 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2614 | if (rs->last_pass_packet) |
2615 | xfree (rs->last_pass_packet); | |
2616 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2617 | } |
2618 | else | |
2619 | xfree (pass_packet); | |
2620 | } | |
2621 | } | |
2622 | ||
82075af2 JS |
2623 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2624 | to report syscalls to GDB. */ | |
2625 | ||
f6ac5f3d PA |
2626 | int |
2627 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2628 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2629 | { |
b80406ac | 2630 | const char *catch_packet; |
82075af2 JS |
2631 | enum packet_result result; |
2632 | int n_sysno = 0; | |
2633 | ||
2634 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2635 | { | |
2636 | /* Not supported. */ | |
2637 | return 1; | |
2638 | } | |
2639 | ||
649a140c | 2640 | if (needed && any_count == 0) |
82075af2 | 2641 | { |
649a140c PA |
2642 | /* Count how many syscalls are to be caught. */ |
2643 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2644 | { |
649a140c | 2645 | if (syscall_counts[i] != 0) |
82075af2 JS |
2646 | n_sysno++; |
2647 | } | |
2648 | } | |
2649 | ||
2650 | if (remote_debug) | |
2651 | { | |
2652 | fprintf_unfiltered (gdb_stdlog, | |
2653 | "remote_set_syscall_catchpoint " | |
2654 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2655 | pid, needed, any_count, n_sysno); | |
2656 | } | |
2657 | ||
1b81856f | 2658 | std::string built_packet; |
82075af2 JS |
2659 | if (needed) |
2660 | { | |
2661 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2662 | characters for a sysno. If the resulting packet size is too | |
2663 | big, fallback on the non-selective packet. */ | |
2664 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2665 | built_packet.reserve (maxpktsz); |
2666 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2667 | if (any_count == 0) |
82075af2 | 2668 | { |
649a140c PA |
2669 | /* Add in each syscall to be caught. */ |
2670 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2671 | { |
649a140c PA |
2672 | if (syscall_counts[i] != 0) |
2673 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2674 | } |
2675 | } | |
1b81856f | 2676 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2677 | { |
2678 | /* catch_packet too big. Fallback to less efficient | |
2679 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2680 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2681 | } |
b80406ac | 2682 | else |
1b81856f | 2683 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2684 | } |
2685 | else | |
b80406ac | 2686 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2687 | |
b80406ac | 2688 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2689 | |
b80406ac | 2690 | putpkt (catch_packet); |
8d64371b | 2691 | getpkt (&rs->buf, 0); |
b80406ac TT |
2692 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2693 | if (result == PACKET_OK) | |
2694 | return 0; | |
2695 | else | |
2696 | return -1; | |
82075af2 JS |
2697 | } |
2698 | ||
9b224c5e PA |
2699 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2700 | signals it should pass through to the inferior when detaching. */ | |
2701 | ||
f6ac5f3d | 2702 | void |
adc6a863 | 2703 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2704 | { |
4082afcc | 2705 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2706 | { |
2707 | char *packet, *p; | |
adc6a863 | 2708 | int count = 0; |
5e4a05c4 | 2709 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2710 | |
adc6a863 PA |
2711 | gdb_assert (signals.size () < 256); |
2712 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2713 | { |
2714 | if (signals[i]) | |
2715 | count++; | |
2716 | } | |
224c3ddb | 2717 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2718 | strcpy (packet, "QProgramSignals:"); |
2719 | p = packet + strlen (packet); | |
adc6a863 | 2720 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2721 | { |
2722 | if (signal_pass_state (i)) | |
2723 | { | |
2724 | if (i >= 16) | |
2725 | *p++ = tohex (i >> 4); | |
2726 | *p++ = tohex (i & 15); | |
2727 | if (count) | |
2728 | *p++ = ';'; | |
2729 | else | |
2730 | break; | |
2731 | count--; | |
2732 | } | |
2733 | } | |
2734 | *p = 0; | |
5e4a05c4 TT |
2735 | if (!rs->last_program_signals_packet |
2736 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2737 | { |
9b224c5e | 2738 | putpkt (packet); |
8d64371b | 2739 | getpkt (&rs->buf, 0); |
8dc5b319 | 2740 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2741 | xfree (rs->last_program_signals_packet); |
2742 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2743 | } |
2744 | else | |
2745 | xfree (packet); | |
2746 | } | |
2747 | } | |
2748 | ||
79d7f229 PA |
2749 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2750 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2751 | thread. If GEN is set, set the general thread, if not, then set | |
2752 | the step/continue thread. */ | |
6b8edb51 PA |
2753 | void |
2754 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2755 | { |
d01949b6 | 2756 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2757 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2758 | char *buf = rs->buf.data (); |
2759 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2760 | |
d7e15655 | 2761 | if (state == ptid) |
c906108c SS |
2762 | return; |
2763 | ||
79d7f229 PA |
2764 | *buf++ = 'H'; |
2765 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2766 | if (ptid == magic_null_ptid) |
79d7f229 | 2767 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2768 | else if (ptid == any_thread_ptid) |
79d7f229 | 2769 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2770 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2771 | xsnprintf (buf, endbuf - buf, "-1"); |
2772 | else | |
82f73884 | 2773 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2774 | putpkt (rs->buf); |
8d64371b | 2775 | getpkt (&rs->buf, 0); |
c906108c | 2776 | if (gen) |
47f8a51d | 2777 | rs->general_thread = ptid; |
c906108c | 2778 | else |
47f8a51d | 2779 | rs->continue_thread = ptid; |
c906108c | 2780 | } |
79d7f229 | 2781 | |
6b8edb51 PA |
2782 | void |
2783 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2784 | { |
2785 | set_thread (ptid, 1); | |
2786 | } | |
2787 | ||
6b8edb51 PA |
2788 | void |
2789 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2790 | { |
2791 | set_thread (ptid, 0); | |
2792 | } | |
2793 | ||
3c9c4b83 PA |
2794 | /* Change the remote current process. Which thread within the process |
2795 | ends up selected isn't important, as long as it is the same process | |
2796 | as what INFERIOR_PTID points to. | |
2797 | ||
2798 | This comes from that fact that there is no explicit notion of | |
2799 | "selected process" in the protocol. The selected process for | |
2800 | general operations is the process the selected general thread | |
2801 | belongs to. */ | |
2802 | ||
6b8edb51 PA |
2803 | void |
2804 | remote_target::set_general_process () | |
3c9c4b83 PA |
2805 | { |
2806 | struct remote_state *rs = get_remote_state (); | |
2807 | ||
2808 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2809 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2810 | return; |
2811 | ||
2812 | /* We only need to change the remote current thread if it's pointing | |
2813 | at some other process. */ | |
e99b03dc | 2814 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2815 | set_general_thread (inferior_ptid); |
2816 | } | |
2817 | ||
c906108c | 2818 | \f |
7d1a114c PA |
2819 | /* Return nonzero if this is the main thread that we made up ourselves |
2820 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2821 | |
2822 | static int | |
f6ac5f3d | 2823 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2824 | { |
d7e15655 | 2825 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2826 | /* The main thread is always alive. */ |
2827 | return 1; | |
2828 | ||
e38504b3 | 2829 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2830 | /* The main thread is always alive. This can happen after a |
2831 | vAttach, if the remote side doesn't support | |
2832 | multi-threading. */ | |
2833 | return 1; | |
2834 | ||
7d1a114c PA |
2835 | return 0; |
2836 | } | |
2837 | ||
2838 | /* Return nonzero if the thread PTID is still alive on the remote | |
2839 | system. */ | |
2840 | ||
57810aa7 | 2841 | bool |
f6ac5f3d | 2842 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2843 | { |
2844 | struct remote_state *rs = get_remote_state (); | |
2845 | char *p, *endp; | |
2846 | ||
2847 | /* Check if this is a thread that we made up ourselves to model | |
2848 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2849 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2850 | return 1; |
2851 | ||
8d64371b TT |
2852 | p = rs->buf.data (); |
2853 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2854 | |
2855 | *p++ = 'T'; | |
2856 | write_ptid (p, endp, ptid); | |
2857 | ||
2e9f7625 | 2858 | putpkt (rs->buf); |
8d64371b | 2859 | getpkt (&rs->buf, 0); |
2e9f7625 | 2860 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2861 | } |
2862 | ||
79efa585 SM |
2863 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2864 | The thread_info object owns the memory for the name. */ | |
2865 | ||
f6ac5f3d PA |
2866 | const char * |
2867 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2868 | { |
2869 | if (info->priv != NULL) | |
a9334058 SM |
2870 | { |
2871 | const std::string &name = get_remote_thread_info (info)->name; | |
2872 | return !name.empty () ? name.c_str () : NULL; | |
2873 | } | |
79efa585 SM |
2874 | |
2875 | return NULL; | |
2876 | } | |
2877 | ||
c906108c SS |
2878 | /* About these extended threadlist and threadinfo packets. They are |
2879 | variable length packets but, the fields within them are often fixed | |
30baf67b | 2880 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
2881 | remote protocol in general. There is a matching unit test module |
2882 | in libstub. */ | |
2883 | ||
23860348 | 2884 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2885 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2886 | changable. */ |
cce74817 JM |
2887 | |
2888 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2889 | Plan to fix this. */ |
cce74817 | 2890 | |
23860348 | 2891 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2892 | |
9d1f7ab2 | 2893 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2894 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2895 | |
2896 | struct gdb_ext_thread_info | |
c5aa993b | 2897 | { |
23860348 | 2898 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2899 | int active; /* Has state interesting to GDB? |
23860348 | 2900 | regs, stack. */ |
2bc416ba | 2901 | char display[256]; /* Brief state display, name, |
cedea757 | 2902 | blocked/suspended. */ |
23860348 | 2903 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2904 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2905 | whatever. */ |
c5aa993b | 2906 | }; |
cce74817 JM |
2907 | |
2908 | /* The volume of remote transfers can be limited by submitting | |
2909 | a mask containing bits specifying the desired information. | |
2910 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2911 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2912 | |
2913 | #define TAG_THREADID 1 | |
2914 | #define TAG_EXISTS 2 | |
2915 | #define TAG_DISPLAY 4 | |
2916 | #define TAG_THREADNAME 8 | |
c5aa993b | 2917 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2918 | |
23860348 | 2919 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2920 | |
a14ed312 | 2921 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2922 | |
a14ed312 | 2923 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2924 | |
a14ed312 | 2925 | static char *pack_int (char *buf, int value); |
cce74817 | 2926 | |
a14ed312 | 2927 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2928 | |
a14ed312 | 2929 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2930 | |
23860348 | 2931 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2932 | |
23860348 | 2933 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2934 | |
23860348 | 2935 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2936 | |
23860348 | 2937 | static int threadref_to_int (threadref *ref); |
cce74817 | 2938 | |
23860348 | 2939 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2940 | |
23860348 | 2941 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2942 | |
2bc416ba | 2943 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2944 | threadref *id); |
cce74817 | 2945 | |
a14ed312 KB |
2946 | static char *pack_threadlist_request (char *pkt, int startflag, |
2947 | int threadcount, | |
23860348 | 2948 | threadref *nextthread); |
cce74817 | 2949 | |
23860348 | 2950 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2951 | |
82f73884 PA |
2952 | |
2953 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2954 | buffer we're allowed to write to. Returns | |
2955 | BUF+CHARACTERS_WRITTEN. */ | |
2956 | ||
6b8edb51 PA |
2957 | char * |
2958 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
2959 | { |
2960 | int pid, tid; | |
2961 | struct remote_state *rs = get_remote_state (); | |
2962 | ||
2963 | if (remote_multi_process_p (rs)) | |
2964 | { | |
e99b03dc | 2965 | pid = ptid.pid (); |
82f73884 PA |
2966 | if (pid < 0) |
2967 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2968 | else | |
2969 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2970 | } | |
e38504b3 | 2971 | tid = ptid.lwp (); |
82f73884 PA |
2972 | if (tid < 0) |
2973 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2974 | else | |
2975 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2976 | ||
2977 | return buf; | |
2978 | } | |
2979 | ||
256642e8 PA |
2980 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2981 | last parsed char. Returns null_ptid if no thread id is found, and | |
2982 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2983 | |
2984 | static ptid_t | |
256642e8 | 2985 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2986 | { |
256642e8 PA |
2987 | const char *p = buf; |
2988 | const char *pp; | |
82f73884 | 2989 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2990 | |
2991 | if (*p == 'p') | |
2992 | { | |
2993 | /* Multi-process ptid. */ | |
2994 | pp = unpack_varlen_hex (p + 1, &pid); | |
2995 | if (*pp != '.') | |
b37520b6 | 2996 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2997 | |
2998 | p = pp; | |
2999 | pp = unpack_varlen_hex (p + 1, &tid); | |
3000 | if (obuf) | |
3001 | *obuf = pp; | |
fd79271b | 3002 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3003 | } |
3004 | ||
3005 | /* No multi-process. Just a tid. */ | |
3006 | pp = unpack_varlen_hex (p, &tid); | |
3007 | ||
c9f35b34 KB |
3008 | /* Return null_ptid when no thread id is found. */ |
3009 | if (p == pp) | |
3010 | { | |
3011 | if (obuf) | |
3012 | *obuf = pp; | |
3013 | return null_ptid; | |
3014 | } | |
3015 | ||
82f73884 | 3016 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
3017 | what's in inferior_ptid, unless it's null at this point. If so, |
3018 | then since there's no way to know the pid of the reported | |
3019 | threads, use the magic number. */ | |
d7e15655 | 3020 | if (inferior_ptid == null_ptid) |
e99b03dc | 3021 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3022 | else |
e99b03dc | 3023 | pid = inferior_ptid.pid (); |
82f73884 PA |
3024 | |
3025 | if (obuf) | |
3026 | *obuf = pp; | |
fd79271b | 3027 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3028 | } |
3029 | ||
c906108c | 3030 | static int |
fba45db2 | 3031 | stubhex (int ch) |
c906108c SS |
3032 | { |
3033 | if (ch >= 'a' && ch <= 'f') | |
3034 | return ch - 'a' + 10; | |
3035 | if (ch >= '0' && ch <= '9') | |
3036 | return ch - '0'; | |
3037 | if (ch >= 'A' && ch <= 'F') | |
3038 | return ch - 'A' + 10; | |
3039 | return -1; | |
3040 | } | |
3041 | ||
3042 | static int | |
fba45db2 | 3043 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
3044 | { |
3045 | int nibble; | |
3046 | int retval = 0; | |
3047 | ||
3048 | while (fieldlength) | |
3049 | { | |
3050 | nibble = stubhex (*buff++); | |
3051 | retval |= nibble; | |
3052 | fieldlength--; | |
3053 | if (fieldlength) | |
3054 | retval = retval << 4; | |
3055 | } | |
3056 | return retval; | |
3057 | } | |
3058 | ||
c906108c | 3059 | static char * |
fba45db2 | 3060 | unpack_nibble (char *buf, int *val) |
c906108c | 3061 | { |
b7589f7d | 3062 | *val = fromhex (*buf++); |
c906108c SS |
3063 | return buf; |
3064 | } | |
3065 | ||
c906108c | 3066 | static char * |
fba45db2 | 3067 | unpack_byte (char *buf, int *value) |
c906108c SS |
3068 | { |
3069 | *value = stub_unpack_int (buf, 2); | |
3070 | return buf + 2; | |
3071 | } | |
3072 | ||
3073 | static char * | |
fba45db2 | 3074 | pack_int (char *buf, int value) |
c906108c SS |
3075 | { |
3076 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3077 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3078 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3079 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3080 | return buf; | |
3081 | } | |
3082 | ||
3083 | static char * | |
fba45db2 | 3084 | unpack_int (char *buf, int *value) |
c906108c SS |
3085 | { |
3086 | *value = stub_unpack_int (buf, 8); | |
3087 | return buf + 8; | |
3088 | } | |
3089 | ||
23860348 | 3090 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3091 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3092 | |
3093 | static char * | |
fba45db2 | 3094 | pack_string (char *pkt, char *string) |
c906108c SS |
3095 | { |
3096 | char ch; | |
3097 | int len; | |
3098 | ||
3099 | len = strlen (string); | |
3100 | if (len > 200) | |
23860348 | 3101 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3102 | pkt = pack_hex_byte (pkt, len); |
3103 | while (len-- > 0) | |
3104 | { | |
3105 | ch = *string++; | |
3106 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3107 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3108 | *pkt++ = ch; |
3109 | } | |
3110 | return pkt; | |
3111 | } | |
3112 | #endif /* 0 (unused) */ | |
3113 | ||
3114 | static char * | |
fba45db2 | 3115 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
3116 | { |
3117 | while (length--) | |
3118 | *dest++ = *src++; | |
3119 | *dest = '\0'; | |
3120 | return src; | |
3121 | } | |
3122 | ||
3123 | static char * | |
fba45db2 | 3124 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3125 | { |
3126 | char *limit; | |
3127 | unsigned char *altid; | |
3128 | ||
3129 | altid = (unsigned char *) id; | |
3130 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3131 | while (pkt < limit) | |
3132 | pkt = pack_hex_byte (pkt, *altid++); | |
3133 | return pkt; | |
3134 | } | |
3135 | ||
3136 | ||
3137 | static char * | |
fba45db2 | 3138 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
3139 | { |
3140 | char *altref; | |
3141 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
3142 | int x, y; | |
3143 | ||
3144 | altref = (char *) id; | |
3145 | ||
3146 | while (inbuf < limit) | |
3147 | { | |
3148 | x = stubhex (*inbuf++); | |
3149 | y = stubhex (*inbuf++); | |
3150 | *altref++ = (x << 4) | y; | |
3151 | } | |
3152 | return inbuf; | |
3153 | } | |
3154 | ||
3155 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3156 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3157 | to use 64bit thread references internally. This is an adapter |
3158 | function. */ | |
3159 | ||
3160 | void | |
fba45db2 | 3161 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3162 | { |
3163 | unsigned char *scan; | |
3164 | ||
3165 | scan = (unsigned char *) id; | |
3166 | { | |
3167 | int i = 4; | |
3168 | while (i--) | |
3169 | *scan++ = 0; | |
3170 | } | |
3171 | *scan++ = (value >> 24) & 0xff; | |
3172 | *scan++ = (value >> 16) & 0xff; | |
3173 | *scan++ = (value >> 8) & 0xff; | |
3174 | *scan++ = (value & 0xff); | |
3175 | } | |
3176 | ||
3177 | static int | |
fba45db2 | 3178 | threadref_to_int (threadref *ref) |
c906108c SS |
3179 | { |
3180 | int i, value = 0; | |
3181 | unsigned char *scan; | |
3182 | ||
cfd77fa1 | 3183 | scan = *ref; |
c906108c SS |
3184 | scan += 4; |
3185 | i = 4; | |
3186 | while (i-- > 0) | |
3187 | value = (value << 8) | ((*scan++) & 0xff); | |
3188 | return value; | |
3189 | } | |
3190 | ||
3191 | static void | |
fba45db2 | 3192 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3193 | { |
3194 | int i; | |
3195 | unsigned char *csrc, *cdest; | |
3196 | ||
3197 | csrc = (unsigned char *) src; | |
3198 | cdest = (unsigned char *) dest; | |
3199 | i = 8; | |
3200 | while (i--) | |
3201 | *cdest++ = *csrc++; | |
3202 | } | |
3203 | ||
3204 | static int | |
fba45db2 | 3205 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3206 | { |
23860348 | 3207 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3208 | #if 0 |
3209 | unsigned char *srcp, *destp; | |
3210 | int i, result; | |
3211 | srcp = (char *) src; | |
3212 | destp = (char *) dest; | |
3213 | ||
3214 | result = 1; | |
3215 | while (i-- > 0) | |
3216 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3217 | return result; | |
3218 | #endif | |
3219 | return 1; | |
3220 | } | |
3221 | ||
3222 | /* | |
c5aa993b JM |
3223 | threadid:1, # always request threadid |
3224 | context_exists:2, | |
3225 | display:4, | |
3226 | unique_name:8, | |
3227 | more_display:16 | |
3228 | */ | |
c906108c SS |
3229 | |
3230 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3231 | ||
3232 | static char * | |
fba45db2 | 3233 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3234 | { |
23860348 MS |
3235 | *pkt++ = 'q'; /* Info Query */ |
3236 | *pkt++ = 'P'; /* process or thread info */ | |
3237 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3238 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3239 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3240 | return pkt; |
3241 | } | |
3242 | ||
23860348 | 3243 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3244 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3245 | add more fields as time goes by. */ |
c906108c | 3246 | |
23860348 | 3247 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3248 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3249 | fetch registers and its stack? */ |
c5aa993b | 3250 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3251 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3252 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3253 | the process. */ |
c906108c | 3254 | |
6b8edb51 PA |
3255 | int |
3256 | remote_target::remote_unpack_thread_info_response (char *pkt, | |
3257 | threadref *expectedref, | |
3258 | gdb_ext_thread_info *info) | |
c906108c | 3259 | { |
d01949b6 | 3260 | struct remote_state *rs = get_remote_state (); |
c906108c | 3261 | int mask, length; |
cfd77fa1 | 3262 | int tag; |
c906108c | 3263 | threadref ref; |
8d64371b | 3264 | char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3265 | int retval = 1; |
3266 | ||
23860348 | 3267 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3268 | info->active = 0; |
3269 | info->display[0] = '\0'; | |
3270 | info->shortname[0] = '\0'; | |
3271 | info->more_display[0] = '\0'; | |
3272 | ||
23860348 MS |
3273 | /* Assume the characters indicating the packet type have been |
3274 | stripped. */ | |
c906108c SS |
3275 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3276 | pkt = unpack_threadid (pkt, &ref); | |
3277 | ||
3278 | if (mask == 0) | |
8a3fe4f8 | 3279 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3280 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3281 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3282 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3283 | return 0; |
3284 | } | |
3285 | copy_threadref (&info->threadid, &ref); | |
3286 | ||
405feb71 | 3287 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3288 | |
23860348 MS |
3289 | /* Packets are terminated with nulls. */ |
3290 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3291 | { |
3292 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3293 | pkt = unpack_byte (pkt, &length); /* length */ |
3294 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3295 | { |
8a3fe4f8 | 3296 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3297 | retval = 0; |
3298 | break; | |
3299 | } | |
3300 | if (tag == TAG_THREADID) | |
3301 | { | |
3302 | if (length != 16) | |
3303 | { | |
8a3fe4f8 | 3304 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3305 | retval = 0; |
3306 | break; | |
3307 | } | |
3308 | pkt = unpack_threadid (pkt, &ref); | |
3309 | mask = mask & ~TAG_THREADID; | |
3310 | continue; | |
3311 | } | |
3312 | if (tag == TAG_EXISTS) | |
3313 | { | |
3314 | info->active = stub_unpack_int (pkt, length); | |
3315 | pkt += length; | |
3316 | mask = mask & ~(TAG_EXISTS); | |
3317 | if (length > 8) | |
3318 | { | |
8a3fe4f8 | 3319 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3320 | retval = 0; |
3321 | break; | |
3322 | } | |
3323 | continue; | |
3324 | } | |
3325 | if (tag == TAG_THREADNAME) | |
3326 | { | |
3327 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3328 | mask = mask & ~TAG_THREADNAME; | |
3329 | continue; | |
3330 | } | |
3331 | if (tag == TAG_DISPLAY) | |
3332 | { | |
3333 | pkt = unpack_string (pkt, &info->display[0], length); | |
3334 | mask = mask & ~TAG_DISPLAY; | |
3335 | continue; | |
3336 | } | |
3337 | if (tag == TAG_MOREDISPLAY) | |
3338 | { | |
3339 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3340 | mask = mask & ~TAG_MOREDISPLAY; | |
3341 | continue; | |
3342 | } | |
8a3fe4f8 | 3343 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3344 | break; /* Not a tag we know about. */ |
c906108c SS |
3345 | } |
3346 | return retval; | |
3347 | } | |
3348 | ||
6b8edb51 PA |
3349 | int |
3350 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3351 | int fieldset, | |
3352 | gdb_ext_thread_info *info) | |
c906108c | 3353 | { |
d01949b6 | 3354 | struct remote_state *rs = get_remote_state (); |
c906108c | 3355 | int result; |
c906108c | 3356 | |
8d64371b | 3357 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3358 | putpkt (rs->buf); |
8d64371b | 3359 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3360 | |
3361 | if (rs->buf[0] == '\0') | |
3362 | return 0; | |
3363 | ||
8d64371b | 3364 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3365 | threadid, info); |
c906108c SS |
3366 | return result; |
3367 | } | |
3368 | ||
c906108c SS |
3369 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3370 | ||
3371 | static char * | |
fba45db2 KB |
3372 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3373 | threadref *nextthread) | |
c906108c SS |
3374 | { |
3375 | *pkt++ = 'q'; /* info query packet */ | |
3376 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3377 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3378 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3379 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3380 | *pkt = '\0'; | |
3381 | return pkt; | |
3382 | } | |
3383 | ||
3384 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3385 | ||
6b8edb51 PA |
3386 | int |
3387 | remote_target::parse_threadlist_response (char *pkt, int result_limit, | |
3388 | threadref *original_echo, | |
3389 | threadref *resultlist, | |
3390 | int *doneflag) | |
c906108c | 3391 | { |
d01949b6 | 3392 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3393 | char *limit; |
3394 | int count, resultcount, done; | |
3395 | ||
3396 | resultcount = 0; | |
3397 | /* Assume the 'q' and 'M chars have been stripped. */ | |
8d64371b | 3398 | limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3399 | /* done parse past here */ |
c906108c SS |
3400 | pkt = unpack_byte (pkt, &count); /* count field */ |
3401 | pkt = unpack_nibble (pkt, &done); | |
3402 | /* The first threadid is the argument threadid. */ | |
3403 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3404 | while ((count-- > 0) && (pkt < limit)) | |
3405 | { | |
3406 | pkt = unpack_threadid (pkt, resultlist++); | |
3407 | if (resultcount++ >= result_limit) | |
3408 | break; | |
3409 | } | |
3410 | if (doneflag) | |
3411 | *doneflag = done; | |
3412 | return resultcount; | |
3413 | } | |
3414 | ||
6dc54d91 PA |
3415 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3416 | qL packet is not supported, 0 on error and 1 on success. */ | |
3417 | ||
6b8edb51 PA |
3418 | int |
3419 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3420 | int result_limit, int *done, int *result_count, | |
3421 | threadref *threadlist) | |
c906108c | 3422 | { |
d01949b6 | 3423 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3424 | int result = 1; |
3425 | ||
405feb71 | 3426 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3427 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3428 | >= get_remote_packet_size ()) | |
ea9c271d | 3429 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3430 | |
8d64371b TT |
3431 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3432 | nextthread); | |
6d820c5c | 3433 | putpkt (rs->buf); |
8d64371b TT |
3434 | getpkt (&rs->buf, 0); |
3435 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3436 | { |
3437 | /* Packet not supported. */ | |
3438 | return -1; | |
3439 | } | |
3440 | ||
3441 | *result_count = | |
8d64371b | 3442 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3443 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3444 | |
0d031856 | 3445 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3446 | { |
23860348 | 3447 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3448 | /* Possibly, there is a duplicate response. */ |
3449 | /* Possibilities : | |
c906108c SS |
3450 | retransmit immediatly - race conditions |
3451 | retransmit after timeout - yes | |
3452 | exit | |
3453 | wait for packet, then exit | |
3454 | */ | |
8a3fe4f8 | 3455 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3456 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3457 | } |
3458 | if (*result_count <= 0) | |
3459 | { | |
3460 | if (*done != 1) | |
3461 | { | |
8a3fe4f8 | 3462 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3463 | result = 0; |
3464 | } | |
3465 | return result; /* break; */ | |
3466 | } | |
3467 | if (*result_count > result_limit) | |
3468 | { | |
3469 | *result_count = 0; | |
8a3fe4f8 | 3470 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3471 | return 0; |
3472 | } | |
3473 | return result; | |
3474 | } | |
3475 | ||
6dc54d91 PA |
3476 | /* Fetch the list of remote threads, with the qL packet, and call |
3477 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3478 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3479 | STEPFUNCTION returns false. If the packet is not supported, | |
3480 | returns -1. */ | |
c906108c | 3481 | |
6b8edb51 PA |
3482 | int |
3483 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3484 | void *context, int looplimit) | |
c906108c | 3485 | { |
0d031856 | 3486 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3487 | int done, i, result_count; |
3488 | int startflag = 1; | |
3489 | int result = 1; | |
3490 | int loopcount = 0; | |
c906108c SS |
3491 | |
3492 | done = 0; | |
3493 | while (!done) | |
3494 | { | |
3495 | if (loopcount++ > looplimit) | |
3496 | { | |
3497 | result = 0; | |
8a3fe4f8 | 3498 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3499 | break; |
3500 | } | |
6dc54d91 PA |
3501 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3502 | MAXTHREADLISTRESULTS, | |
3503 | &done, &result_count, | |
3504 | rs->resultthreadlist); | |
3505 | if (result <= 0) | |
3506 | break; | |
23860348 | 3507 | /* Clear for later iterations. */ |
c906108c SS |
3508 | startflag = 0; |
3509 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3510 | if (result_count >= 1) | |
0d031856 TT |
3511 | copy_threadref (&rs->nextthread, |
3512 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3513 | i = 0; |
3514 | while (result_count--) | |
6dc54d91 PA |
3515 | { |
3516 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3517 | { | |
3518 | result = 0; | |
3519 | break; | |
3520 | } | |
3521 | } | |
c906108c SS |
3522 | } |
3523 | return result; | |
3524 | } | |
3525 | ||
6dc54d91 PA |
3526 | /* A thread found on the remote target. */ |
3527 | ||
21fe1c75 | 3528 | struct thread_item |
6dc54d91 | 3529 | { |
21fe1c75 SM |
3530 | explicit thread_item (ptid_t ptid_) |
3531 | : ptid (ptid_) | |
3532 | {} | |
3533 | ||
3534 | thread_item (thread_item &&other) = default; | |
3535 | thread_item &operator= (thread_item &&other) = default; | |
3536 | ||
3537 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3538 | ||
6dc54d91 PA |
3539 | /* The thread's PTID. */ |
3540 | ptid_t ptid; | |
3541 | ||
21fe1c75 SM |
3542 | /* The thread's extra info. */ |
3543 | std::string extra; | |
6dc54d91 | 3544 | |
21fe1c75 SM |
3545 | /* The thread's name. */ |
3546 | std::string name; | |
79efa585 | 3547 | |
6dc54d91 | 3548 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3549 | int core = -1; |
f6327dcb KB |
3550 | |
3551 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3552 | gdb::byte_vector thread_handle; |
21fe1c75 | 3553 | }; |
6dc54d91 PA |
3554 | |
3555 | /* Context passed around to the various methods listing remote | |
3556 | threads. As new threads are found, they're added to the ITEMS | |
3557 | vector. */ | |
3558 | ||
3559 | struct threads_listing_context | |
3560 | { | |
21fe1c75 SM |
3561 | /* Return true if this object contains an entry for a thread with ptid |
3562 | PTID. */ | |
6dc54d91 | 3563 | |
21fe1c75 SM |
3564 | bool contains_thread (ptid_t ptid) const |
3565 | { | |
3566 | auto match_ptid = [&] (const thread_item &item) | |
3567 | { | |
3568 | return item.ptid == ptid; | |
3569 | }; | |
80134cf5 | 3570 | |
21fe1c75 SM |
3571 | auto it = std::find_if (this->items.begin (), |
3572 | this->items.end (), | |
3573 | match_ptid); | |
80134cf5 | 3574 | |
21fe1c75 SM |
3575 | return it != this->items.end (); |
3576 | } | |
80134cf5 | 3577 | |
21fe1c75 | 3578 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3579 | |
21fe1c75 SM |
3580 | void remove_thread (ptid_t ptid) |
3581 | { | |
3582 | auto match_ptid = [&] (const thread_item &item) | |
3583 | { | |
3584 | return item.ptid == ptid; | |
3585 | }; | |
cbb8991c | 3586 | |
21fe1c75 SM |
3587 | auto it = std::remove_if (this->items.begin (), |
3588 | this->items.end (), | |
3589 | match_ptid); | |
cbb8991c | 3590 | |
21fe1c75 SM |
3591 | if (it != this->items.end ()) |
3592 | this->items.erase (it); | |
3593 | } | |
3594 | ||
3595 | /* The threads found on the remote target. */ | |
3596 | std::vector<thread_item> items; | |
3597 | }; | |
cbb8991c | 3598 | |
c906108c | 3599 | static int |
6dc54d91 | 3600 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3601 | { |
19ba03f4 SM |
3602 | struct threads_listing_context *context |
3603 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3604 | int pid = inferior_ptid.pid (); |
3605 | int lwp = threadref_to_int (ref); | |
3606 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3607 | |
21fe1c75 | 3608 | context->items.emplace_back (ptid); |
6dc54d91 | 3609 | |
c906108c SS |
3610 | return 1; /* continue iterator */ |
3611 | } | |
3612 | ||
3613 | #define CRAZY_MAX_THREADS 1000 | |
3614 | ||
6b8edb51 PA |
3615 | ptid_t |
3616 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3617 | { |
d01949b6 | 3618 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3619 | |
3620 | putpkt ("qC"); | |
8d64371b | 3621 | getpkt (&rs->buf, 0); |
2e9f7625 | 3622 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3623 | { |
256642e8 | 3624 | const char *obuf; |
c9f35b34 KB |
3625 | ptid_t result; |
3626 | ||
3627 | result = read_ptid (&rs->buf[2], &obuf); | |
3628 | if (*obuf != '\0' && remote_debug) | |
3629 | fprintf_unfiltered (gdb_stdlog, | |
3630 | "warning: garbage in qC reply\n"); | |
3631 | ||
3632 | return result; | |
3633 | } | |
c906108c SS |
3634 | else |
3635 | return oldpid; | |
3636 | } | |
3637 | ||
6dc54d91 | 3638 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3639 | |
6b8edb51 PA |
3640 | int |
3641 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3642 | { |
6dc54d91 PA |
3643 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3644 | CRAZY_MAX_THREADS) >= 0) | |
3645 | return 1; | |
3646 | ||
3647 | return 0; | |
c906108c SS |
3648 | } |
3649 | ||
dc146f7c VP |
3650 | #if defined(HAVE_LIBEXPAT) |
3651 | ||
dc146f7c VP |
3652 | static void |
3653 | start_thread (struct gdb_xml_parser *parser, | |
3654 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3655 | void *user_data, |
3656 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3657 | { |
19ba03f4 SM |
3658 | struct threads_listing_context *data |
3659 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3660 | struct gdb_xml_value *attr; |
dc146f7c | 3661 | |
4d0fdd9b | 3662 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3663 | ptid_t ptid = read_ptid (id, NULL); |
3664 | ||
3665 | data->items.emplace_back (ptid); | |
3666 | thread_item &item = data->items.back (); | |
dc146f7c | 3667 | |
3d2c1d41 PA |
3668 | attr = xml_find_attribute (attributes, "core"); |
3669 | if (attr != NULL) | |
4d0fdd9b | 3670 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3671 | |
79efa585 | 3672 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3673 | if (attr != NULL) |
4d0fdd9b | 3674 | item.name = (const char *) attr->value.get (); |
79efa585 | 3675 | |
f6327dcb KB |
3676 | attr = xml_find_attribute (attributes, "handle"); |
3677 | if (attr != NULL) | |
4d0fdd9b | 3678 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3679 | } |
3680 | ||
3681 | static void | |
3682 | end_thread (struct gdb_xml_parser *parser, | |
3683 | const struct gdb_xml_element *element, | |
3684 | void *user_data, const char *body_text) | |
3685 | { | |
19ba03f4 SM |
3686 | struct threads_listing_context *data |
3687 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3688 | |
21fe1c75 SM |
3689 | if (body_text != NULL && *body_text != '\0') |
3690 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3691 | } |
3692 | ||
3693 | const struct gdb_xml_attribute thread_attributes[] = { | |
3694 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3695 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3696 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3697 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3698 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3699 | }; | |
3700 | ||
3701 | const struct gdb_xml_element thread_children[] = { | |
3702 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3703 | }; | |
3704 | ||
3705 | const struct gdb_xml_element threads_children[] = { | |
3706 | { "thread", thread_attributes, thread_children, | |
3707 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3708 | start_thread, end_thread }, | |
3709 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3710 | }; | |
3711 | ||
3712 | const struct gdb_xml_element threads_elements[] = { | |
3713 | { "threads", NULL, threads_children, | |
3714 | GDB_XML_EF_NONE, NULL, NULL }, | |
3715 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3716 | }; | |
3717 | ||
3718 | #endif | |
3719 | ||
6dc54d91 | 3720 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3721 | |
6b8edb51 PA |
3722 | int |
3723 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3724 | { |
dc146f7c | 3725 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3726 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3727 | { |
9018be22 | 3728 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3729 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3730 | |
9018be22 | 3731 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3732 | { |
6dc54d91 | 3733 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3734 | threads_elements, xml->data (), context); |
dc146f7c VP |
3735 | } |
3736 | ||
6dc54d91 | 3737 | return 1; |
dc146f7c VP |
3738 | } |
3739 | #endif | |
3740 | ||
6dc54d91 PA |
3741 | return 0; |
3742 | } | |
3743 | ||
3744 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3745 | ||
6b8edb51 PA |
3746 | int |
3747 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3748 | { |
3749 | struct remote_state *rs = get_remote_state (); | |
3750 | ||
b80fafe3 | 3751 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3752 | { |
256642e8 | 3753 | const char *bufp; |
6dc54d91 | 3754 | |
9d1f7ab2 | 3755 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3756 | getpkt (&rs->buf, 0); |
3757 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3758 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3759 | { |
9d1f7ab2 MS |
3760 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3761 | { | |
3762 | do | |
3763 | { | |
21fe1c75 SM |
3764 | ptid_t ptid = read_ptid (bufp, &bufp); |
3765 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3766 | } |
3767 | while (*bufp++ == ','); /* comma-separated list */ | |
3768 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3769 | getpkt (&rs->buf, 0); |
3770 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3771 | } |
6dc54d91 PA |
3772 | return 1; |
3773 | } | |
3774 | else | |
3775 | { | |
3776 | /* Packet not recognized. */ | |
3777 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3778 | } |
3779 | } | |
3780 | ||
6dc54d91 PA |
3781 | return 0; |
3782 | } | |
3783 | ||
e8032dde | 3784 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3785 | targets. */ |
3786 | ||
f6ac5f3d PA |
3787 | void |
3788 | remote_target::update_thread_list () | |
6dc54d91 | 3789 | { |
6dc54d91 | 3790 | struct threads_listing_context context; |
ab970af1 | 3791 | int got_list = 0; |
e8032dde | 3792 | |
6dc54d91 PA |
3793 | /* We have a few different mechanisms to fetch the thread list. Try |
3794 | them all, starting with the most preferred one first, falling | |
3795 | back to older methods. */ | |
6b8edb51 PA |
3796 | if (remote_get_threads_with_qxfer (&context) |
3797 | || remote_get_threads_with_qthreadinfo (&context) | |
3798 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3799 | { |
ab970af1 PA |
3800 | got_list = 1; |
3801 | ||
21fe1c75 | 3802 | if (context.items.empty () |
f6ac5f3d | 3803 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3804 | { |
3805 | /* Some targets don't really support threads, but still | |
3806 | reply an (empty) thread list in response to the thread | |
3807 | listing packets, instead of replying "packet not | |
3808 | supported". Exit early so we don't delete the main | |
3809 | thread. */ | |
7d1a114c PA |
3810 | return; |
3811 | } | |
3812 | ||
ab970af1 PA |
3813 | /* CONTEXT now holds the current thread list on the remote |
3814 | target end. Delete GDB-side threads no longer found on the | |
3815 | target. */ | |
08036331 | 3816 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3817 | { |
5b6d1e4f PA |
3818 | if (tp->inf->process_target () != this) |
3819 | continue; | |
3820 | ||
21fe1c75 | 3821 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3822 | { |
3823 | /* Not found. */ | |
00431a78 | 3824 | delete_thread (tp); |
ab970af1 | 3825 | } |
cbb8991c DB |
3826 | } |
3827 | ||
3828 | /* Remove any unreported fork child threads from CONTEXT so | |
3829 | that we don't interfere with follow fork, which is where | |
3830 | creation of such threads is handled. */ | |
3831 | remove_new_fork_children (&context); | |
74531fed | 3832 | |
ab970af1 | 3833 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3834 | for (thread_item &item : context.items) |
6dc54d91 | 3835 | { |
21fe1c75 | 3836 | if (item.ptid != null_ptid) |
6dc54d91 | 3837 | { |
6dc54d91 | 3838 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3839 | executing until proven otherwise with a stop reply. |
3840 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3841 | stopped. */ |
0d5b594f | 3842 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3843 | |
21fe1c75 | 3844 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3845 | |
5b6d1e4f | 3846 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 3847 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3848 | info->core = item.core; |
7aabaf9d SM |
3849 | info->extra = std::move (item.extra); |
3850 | info->name = std::move (item.name); | |
3851 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3852 | } |
3853 | } | |
3854 | } | |
3855 | ||
ab970af1 PA |
3856 | if (!got_list) |
3857 | { | |
3858 | /* If no thread listing method is supported, then query whether | |
3859 | each known thread is alive, one by one, with the T packet. | |
3860 | If the target doesn't support threads at all, then this is a | |
3861 | no-op. See remote_thread_alive. */ | |
3862 | prune_threads (); | |
3863 | } | |
9d1f7ab2 MS |
3864 | } |
3865 | ||
802188a7 | 3866 | /* |
9d1f7ab2 MS |
3867 | * Collect a descriptive string about the given thread. |
3868 | * The target may say anything it wants to about the thread | |
3869 | * (typically info about its blocked / runnable state, name, etc.). | |
3870 | * This string will appear in the info threads display. | |
802188a7 | 3871 | * |
9d1f7ab2 MS |
3872 | * Optional: targets are not required to implement this function. |
3873 | */ | |
3874 | ||
f6ac5f3d PA |
3875 | const char * |
3876 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3877 | { |
d01949b6 | 3878 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3879 | int set; |
3880 | threadref id; | |
3881 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 3882 | |
5d93a237 | 3883 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3884 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3885 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3886 | |
d7e15655 | 3887 | if (tp->ptid == magic_null_ptid |
e38504b3 | 3888 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
3889 | /* This is the main thread which was added by GDB. The remote |
3890 | server doesn't know about it. */ | |
3891 | return NULL; | |
3892 | ||
c76a8ea3 PA |
3893 | std::string &extra = get_remote_thread_info (tp)->extra; |
3894 | ||
3895 | /* If already have cached info, use it. */ | |
3896 | if (!extra.empty ()) | |
3897 | return extra.c_str (); | |
3898 | ||
4082afcc | 3899 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3900 | { |
c76a8ea3 PA |
3901 | /* If we're using qXfer:threads:read, then the extra info is |
3902 | included in the XML. So if we didn't have anything cached, | |
3903 | it's because there's really no extra info. */ | |
3904 | return NULL; | |
dc146f7c VP |
3905 | } |
3906 | ||
b80fafe3 | 3907 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3908 | { |
8d64371b TT |
3909 | char *b = rs->buf.data (); |
3910 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
3911 | |
3912 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3913 | b += strlen (b); | |
3914 | write_ptid (b, endb, tp->ptid); | |
3915 | ||
2e9f7625 | 3916 | putpkt (rs->buf); |
8d64371b | 3917 | getpkt (&rs->buf, 0); |
2e9f7625 | 3918 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3919 | { |
8d64371b TT |
3920 | extra.resize (strlen (rs->buf.data ()) / 2); |
3921 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 3922 | return extra.c_str (); |
9d1f7ab2 | 3923 | } |
0f71a2f6 | 3924 | } |
9d1f7ab2 MS |
3925 | |
3926 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3927 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3928 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3929 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 3930 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
3931 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3932 | if (threadinfo.active) | |
0f71a2f6 | 3933 | { |
9d1f7ab2 | 3934 | if (*threadinfo.shortname) |
c76a8ea3 | 3935 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 3936 | if (*threadinfo.display) |
c76a8ea3 PA |
3937 | { |
3938 | if (!extra.empty ()) | |
3939 | extra += ','; | |
3940 | string_appendf (extra, " State: %s", threadinfo.display); | |
3941 | } | |
9d1f7ab2 | 3942 | if (*threadinfo.more_display) |
c5aa993b | 3943 | { |
c76a8ea3 PA |
3944 | if (!extra.empty ()) |
3945 | extra += ','; | |
3946 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 3947 | } |
c76a8ea3 | 3948 | return extra.c_str (); |
0f71a2f6 | 3949 | } |
9d1f7ab2 | 3950 | return NULL; |
0f71a2f6 | 3951 | } |
c906108c | 3952 | \f |
c5aa993b | 3953 | |
f6ac5f3d PA |
3954 | bool |
3955 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3956 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3957 | { |
3958 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 3959 | char *p = rs->buf.data (); |
0fb4aa4b | 3960 | |
bba74b36 | 3961 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3962 | p += strlen (p); |
3963 | p += hexnumstr (p, addr); | |
3964 | putpkt (rs->buf); | |
8d64371b TT |
3965 | getpkt (&rs->buf, 0); |
3966 | p = rs->buf.data (); | |
0fb4aa4b PA |
3967 | |
3968 | if (*p == 'E') | |
3969 | error (_("Remote failure reply: %s"), p); | |
3970 | ||
3971 | if (*p++ == 'm') | |
3972 | { | |
256642e8 | 3973 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3974 | return true; |
0fb4aa4b PA |
3975 | } |
3976 | ||
5d9310c4 | 3977 | return false; |
0fb4aa4b PA |
3978 | } |
3979 | ||
f6ac5f3d PA |
3980 | std::vector<static_tracepoint_marker> |
3981 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
3982 | { |
3983 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3984 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3985 | const char *p; |
5d9310c4 | 3986 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3987 | |
3988 | /* Ask for a first packet of static tracepoint marker | |
3989 | definition. */ | |
3990 | putpkt ("qTfSTM"); | |
8d64371b TT |
3991 | getpkt (&rs->buf, 0); |
3992 | p = rs->buf.data (); | |
0fb4aa4b PA |
3993 | if (*p == 'E') |
3994 | error (_("Remote failure reply: %s"), p); | |
3995 | ||
0fb4aa4b PA |
3996 | while (*p++ == 'm') |
3997 | { | |
0fb4aa4b PA |
3998 | do |
3999 | { | |
5d9310c4 | 4000 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4001 | |
5d9310c4 SM |
4002 | if (strid == NULL || marker.str_id == strid) |
4003 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4004 | } |
4005 | while (*p++ == ','); /* comma-separated list */ | |
4006 | /* Ask for another packet of static tracepoint definition. */ | |
4007 | putpkt ("qTsSTM"); | |
8d64371b TT |
4008 | getpkt (&rs->buf, 0); |
4009 | p = rs->buf.data (); | |
0fb4aa4b PA |
4010 | } |
4011 | ||
0fb4aa4b PA |
4012 | return markers; |
4013 | } | |
4014 | ||
4015 | \f | |
10760264 JB |
4016 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4017 | ||
f6ac5f3d PA |
4018 | ptid_t |
4019 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 4020 | { |
e99b03dc | 4021 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
4022 | } |
4023 | \f | |
4024 | ||
24b06219 | 4025 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4026 | |
6b8edb51 PA |
4027 | void |
4028 | remote_target::extended_remote_restart () | |
c906108c | 4029 | { |
d01949b6 | 4030 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4031 | |
4032 | /* Send the restart command; for reasons I don't understand the | |
4033 | remote side really expects a number after the "R". */ | |
8d64371b | 4034 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4035 | putpkt (rs->buf); |
c906108c | 4036 | |
ad9a8f3f | 4037 | remote_fileio_reset (); |
c906108c SS |
4038 | } |
4039 | \f | |
4040 | /* Clean up connection to a remote debugger. */ | |
4041 | ||
f6ac5f3d PA |
4042 | void |
4043 | remote_target::close () | |
c906108c | 4044 | { |
048094ac | 4045 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4046 | terminal_ours (); |
ce5ce7ed | 4047 | |
6b8edb51 PA |
4048 | trace_reset_local_state (); |
4049 | ||
4050 | delete this; | |
4051 | } | |
4052 | ||
4053 | remote_target::~remote_target () | |
4054 | { | |
4055 | struct remote_state *rs = get_remote_state (); | |
4056 | ||
4057 | /* Check for NULL because we may get here with a partially | |
4058 | constructed target/connection. */ | |
4059 | if (rs->remote_desc == nullptr) | |
4060 | return; | |
4061 | ||
4062 | serial_close (rs->remote_desc); | |
4063 | ||
4064 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4065 | everything of this target. */ |
6b8edb51 | 4066 | discard_pending_stop_replies_in_queue (); |
74531fed | 4067 | |
6b8edb51 PA |
4068 | if (rs->remote_async_inferior_event_token) |
4069 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4070 | |
97dfbadd | 4071 | delete rs->notif_state; |
c906108c SS |
4072 | } |
4073 | ||
23860348 | 4074 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4075 | |
6b8edb51 PA |
4076 | void |
4077 | remote_target::get_offsets () | |
c906108c | 4078 | { |
d01949b6 | 4079 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4080 | char *buf; |
085dd6e6 | 4081 | char *ptr; |
31d99776 DJ |
4082 | int lose, num_segments = 0, do_sections, do_segments; |
4083 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 DJ |
4084 | struct symfile_segment_data *data; |
4085 | ||
4086 | if (symfile_objfile == NULL) | |
4087 | return; | |
c906108c SS |
4088 | |
4089 | putpkt ("qOffsets"); | |
8d64371b TT |
4090 | getpkt (&rs->buf, 0); |
4091 | buf = rs->buf.data (); | |
c906108c SS |
4092 | |
4093 | if (buf[0] == '\000') | |
4094 | return; /* Return silently. Stub doesn't support | |
23860348 | 4095 | this command. */ |
c906108c SS |
4096 | if (buf[0] == 'E') |
4097 | { | |
8a3fe4f8 | 4098 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4099 | return; |
4100 | } | |
4101 | ||
4102 | /* Pick up each field in turn. This used to be done with scanf, but | |
4103 | scanf will make trouble if CORE_ADDR size doesn't match | |
4104 | conversion directives correctly. The following code will work | |
4105 | with any size of CORE_ADDR. */ | |
4106 | text_addr = data_addr = bss_addr = 0; | |
4107 | ptr = buf; | |
4108 | lose = 0; | |
4109 | ||
61012eef | 4110 | if (startswith (ptr, "Text=")) |
c906108c SS |
4111 | { |
4112 | ptr += 5; | |
4113 | /* Don't use strtol, could lose on big values. */ | |
4114 | while (*ptr && *ptr != ';') | |
4115 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4116 | |
61012eef | 4117 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4118 | { |
4119 | ptr += 6; | |
4120 | while (*ptr && *ptr != ';') | |
4121 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4122 | } | |
4123 | else | |
4124 | lose = 1; | |
4125 | ||
61012eef | 4126 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4127 | { |
4128 | ptr += 5; | |
4129 | while (*ptr && *ptr != ';') | |
4130 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4131 | |
31d99776 DJ |
4132 | if (bss_addr != data_addr) |
4133 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4134 | } | |
4135 | else | |
4136 | lose = 1; | |
4137 | } | |
61012eef | 4138 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4139 | { |
31d99776 DJ |
4140 | ptr += 8; |
4141 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4142 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4143 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4144 | num_segments = 1; | |
4145 | ||
61012eef | 4146 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4147 | { |
4148 | ptr += 9; | |
4149 | while (*ptr && *ptr != ';') | |
4150 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4151 | num_segments++; | |
4152 | } | |
c906108c SS |
4153 | } |
4154 | else | |
4155 | lose = 1; | |
4156 | ||
4157 | if (lose) | |
8a3fe4f8 | 4158 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4159 | else if (*ptr != '\0') |
4160 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4161 | |
6a053cb1 | 4162 | section_offsets offs = symfile_objfile->section_offsets; |
c906108c | 4163 | |
31d99776 DJ |
4164 | data = get_symfile_segment_data (symfile_objfile->obfd); |
4165 | do_segments = (data != NULL); | |
4166 | do_sections = num_segments == 0; | |
c906108c | 4167 | |
28c32713 | 4168 | if (num_segments > 0) |
31d99776 | 4169 | { |
31d99776 DJ |
4170 | segments[0] = text_addr; |
4171 | segments[1] = data_addr; | |
4172 | } | |
28c32713 JB |
4173 | /* If we have two segments, we can still try to relocate everything |
4174 | by assuming that the .text and .data offsets apply to the whole | |
4175 | text and data segments. Convert the offsets given in the packet | |
4176 | to base addresses for symfile_map_offsets_to_segments. */ | |
4177 | else if (data && data->num_segments == 2) | |
4178 | { | |
4179 | segments[0] = data->segment_bases[0] + text_addr; | |
4180 | segments[1] = data->segment_bases[1] + data_addr; | |
4181 | num_segments = 2; | |
4182 | } | |
8d385431 DJ |
4183 | /* If the object file has only one segment, assume that it is text |
4184 | rather than data; main programs with no writable data are rare, | |
4185 | but programs with no code are useless. Of course the code might | |
4186 | have ended up in the data segment... to detect that we would need | |
4187 | the permissions here. */ | |
4188 | else if (data && data->num_segments == 1) | |
4189 | { | |
4190 | segments[0] = data->segment_bases[0] + text_addr; | |
4191 | num_segments = 1; | |
4192 | } | |
28c32713 JB |
4193 | /* There's no way to relocate by segment. */ |
4194 | else | |
4195 | do_segments = 0; | |
31d99776 DJ |
4196 | |
4197 | if (do_segments) | |
4198 | { | |
4199 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
4200 | offs, num_segments, segments); | |
4201 | ||
4202 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4203 | error (_("Can not handle qOffsets TextSeg " |
4204 | "response with this symbol file")); | |
31d99776 DJ |
4205 | |
4206 | if (ret > 0) | |
4207 | do_sections = 0; | |
4208 | } | |
c906108c | 4209 | |
9ef895d6 DJ |
4210 | if (data) |
4211 | free_symfile_segment_data (data); | |
31d99776 DJ |
4212 | |
4213 | if (do_sections) | |
4214 | { | |
6a053cb1 | 4215 | offs[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
31d99776 | 4216 | |
3e43a32a MS |
4217 | /* This is a temporary kludge to force data and bss to use the |
4218 | same offsets because that's what nlmconv does now. The real | |
4219 | solution requires changes to the stub and remote.c that I | |
4220 | don't have time to do right now. */ | |
31d99776 | 4221 | |
6a053cb1 TT |
4222 | offs[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
4223 | offs[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
31d99776 | 4224 | } |
c906108c SS |
4225 | |
4226 | objfile_relocate (symfile_objfile, offs); | |
4227 | } | |
4228 | ||
9a7071a8 | 4229 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4230 | |
4231 | void | |
4232 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4233 | { |
5d93a237 TT |
4234 | struct remote_state *rs = get_remote_state (); |
4235 | ||
9a7071a8 | 4236 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4237 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4238 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4239 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4240 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4241 | { | |
5d93a237 | 4242 | serial_send_break (rs->remote_desc); |
c33e31fd | 4243 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4244 | } |
4245 | else | |
4246 | internal_error (__FILE__, __LINE__, | |
4247 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4248 | interrupt_sequence_mode); | |
4249 | } | |
4250 | ||
3405876a PA |
4251 | |
4252 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4253 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4254 | ||
4255 | static ptid_t | |
4256 | stop_reply_extract_thread (char *stop_reply) | |
4257 | { | |
4258 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4259 | { | |
256642e8 | 4260 | const char *p; |
3405876a PA |
4261 | |
4262 | /* Txx r:val ; r:val (...) */ | |
4263 | p = &stop_reply[3]; | |
4264 | ||
4265 | /* Look for "register" named "thread". */ | |
4266 | while (*p != '\0') | |
4267 | { | |
256642e8 | 4268 | const char *p1; |
3405876a PA |
4269 | |
4270 | p1 = strchr (p, ':'); | |
4271 | if (p1 == NULL) | |
4272 | return null_ptid; | |
4273 | ||
4274 | if (strncmp (p, "thread", p1 - p) == 0) | |
4275 | return read_ptid (++p1, &p); | |
4276 | ||
4277 | p1 = strchr (p, ';'); | |
4278 | if (p1 == NULL) | |
4279 | return null_ptid; | |
4280 | p1++; | |
4281 | ||
4282 | p = p1; | |
4283 | } | |
4284 | } | |
4285 | ||
4286 | return null_ptid; | |
4287 | } | |
4288 | ||
b7ea362b PA |
4289 | /* Determine the remote side's current thread. If we have a stop |
4290 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4291 | "thread" register we can extract the current thread from. If not, | |
4292 | ask the remote which is the current thread with qC. The former | |
4293 | method avoids a roundtrip. */ | |
4294 | ||
6b8edb51 PA |
4295 | ptid_t |
4296 | remote_target::get_current_thread (char *wait_status) | |
b7ea362b | 4297 | { |
6a49a997 | 4298 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4299 | |
4300 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4301 | the target architecture, which we haven't yet fully determined at | |
4302 | this point. */ | |
4303 | if (wait_status != NULL) | |
4304 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4305 | if (ptid == null_ptid) |
b7ea362b PA |
4306 | ptid = remote_current_thread (inferior_ptid); |
4307 | ||
4308 | return ptid; | |
4309 | } | |
4310 | ||
49c62f2e PA |
4311 | /* Query the remote target for which is the current thread/process, |
4312 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4313 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4314 | to return the current thread. |
4315 | ||
4316 | This function is called after handling the '?' or 'vRun' packets, | |
4317 | whose response is a stop reply from which we can also try | |
4318 | extracting the thread. If the target doesn't support the explicit | |
4319 | qC query, we infer the current thread from that stop reply, passed | |
4320 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e | 4321 | |
6b8edb51 PA |
4322 | void |
4323 | remote_target::add_current_inferior_and_thread (char *wait_status) | |
49c62f2e PA |
4324 | { |
4325 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4326 | bool fake_pid_p = false; |
49c62f2e PA |
4327 | |
4328 | inferior_ptid = null_ptid; | |
4329 | ||
b7ea362b | 4330 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 4331 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4332 | |
87215ad1 | 4333 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4334 | { |
4335 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4336 | fake_pid_p = true; |
49c62f2e PA |
4337 | } |
4338 | else | |
4339 | { | |
4340 | /* Without this, some commands which require an active target | |
4341 | (such as kill) won't work. This variable serves (at least) | |
4342 | double duty as both the pid of the target process (if it has | |
4343 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4344 | curr_ptid = magic_null_ptid; |
9ab8741a | 4345 | fake_pid_p = true; |
49c62f2e PA |
4346 | } |
4347 | ||
e99b03dc | 4348 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4349 | |
87215ad1 SDJ |
4350 | /* Add the main thread and switch to it. Don't try reading |
4351 | registers yet, since we haven't fetched the target description | |
4352 | yet. */ | |
5b6d1e4f | 4353 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4354 | switch_to_thread_no_regs (tp); |
49c62f2e PA |
4355 | } |
4356 | ||
6efcd9a8 PA |
4357 | /* Print info about a thread that was found already stopped on |
4358 | connection. */ | |
4359 | ||
4360 | static void | |
4361 | print_one_stopped_thread (struct thread_info *thread) | |
4362 | { | |
4363 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4364 | ||
00431a78 | 4365 | switch_to_thread (thread); |
f2ffa92b | 4366 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4367 | set_current_sal_from_frame (get_current_frame ()); |
4368 | ||
4369 | thread->suspend.waitstatus_pending_p = 0; | |
4370 | ||
4371 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4372 | { | |
4373 | enum gdb_signal sig = ws->value.sig; | |
4374 | ||
4375 | if (signal_print_state (sig)) | |
76727919 | 4376 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4377 | } |
76727919 | 4378 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4379 | } |
4380 | ||
221e1a37 PA |
4381 | /* Process all initial stop replies the remote side sent in response |
4382 | to the ? packet. These indicate threads that were already stopped | |
4383 | on initial connection. We mark these threads as stopped and print | |
4384 | their current frame before giving the user the prompt. */ | |
4385 | ||
6b8edb51 PA |
4386 | void |
4387 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4388 | { |
4389 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4390 | struct thread_info *selected = NULL; |
4391 | struct thread_info *lowest_stopped = NULL; | |
4392 | struct thread_info *first = NULL; | |
221e1a37 PA |
4393 | |
4394 | /* Consume the initial pending events. */ | |
4395 | while (pending_stop_replies-- > 0) | |
4396 | { | |
4397 | ptid_t waiton_ptid = minus_one_ptid; | |
4398 | ptid_t event_ptid; | |
4399 | struct target_waitstatus ws; | |
4400 | int ignore_event = 0; | |
4401 | ||
4402 | memset (&ws, 0, sizeof (ws)); | |
4403 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4404 | if (remote_debug) | |
4405 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4406 | ||
4407 | switch (ws.kind) | |
4408 | { | |
4409 | case TARGET_WAITKIND_IGNORE: | |
4410 | case TARGET_WAITKIND_NO_RESUMED: | |
4411 | case TARGET_WAITKIND_SIGNALLED: | |
4412 | case TARGET_WAITKIND_EXITED: | |
4413 | /* We shouldn't see these, but if we do, just ignore. */ | |
4414 | if (remote_debug) | |
4415 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4416 | ignore_event = 1; | |
4417 | break; | |
4418 | ||
4419 | case TARGET_WAITKIND_EXECD: | |
4420 | xfree (ws.value.execd_pathname); | |
4421 | break; | |
4422 | default: | |
4423 | break; | |
4424 | } | |
4425 | ||
4426 | if (ignore_event) | |
4427 | continue; | |
4428 | ||
5b6d1e4f | 4429 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 PA |
4430 | |
4431 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4432 | { | |
4433 | enum gdb_signal sig = ws.value.sig; | |
4434 | ||
4435 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4436 | instead of signal 0. Suppress it. */ | |
4437 | if (sig == GDB_SIGNAL_TRAP) | |
4438 | sig = GDB_SIGNAL_0; | |
b926417a | 4439 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4440 | ws.value.sig = sig; |
4441 | } | |
221e1a37 | 4442 | |
b926417a | 4443 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4444 | |
4445 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4446 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4447 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 | 4448 | |
5b6d1e4f PA |
4449 | set_executing (this, event_ptid, 0); |
4450 | set_running (this, event_ptid, 0); | |
b926417a | 4451 | get_remote_thread_info (evthread)->vcont_resumed = 0; |
6efcd9a8 PA |
4452 | } |
4453 | ||
4454 | /* "Notice" the new inferiors before anything related to | |
4455 | registers/memory. */ | |
5b6d1e4f | 4456 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4457 | { |
6efcd9a8 PA |
4458 | inf->needs_setup = 1; |
4459 | ||
4460 | if (non_stop) | |
4461 | { | |
08036331 | 4462 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4463 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4464 | from_tty); |
4465 | } | |
4466 | } | |
4467 | ||
4468 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4469 | records the threads' stop pc, so must be done after "noticing" | |
4470 | the inferiors. */ | |
4471 | if (!non_stop) | |
4472 | { | |
4473 | stop_all_threads (); | |
4474 | ||
4475 | /* If all threads of an inferior were already stopped, we | |
4476 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4477 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4478 | { |
6efcd9a8 PA |
4479 | if (inf->needs_setup) |
4480 | { | |
08036331 | 4481 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4482 | switch_to_thread_no_regs (thread); |
4483 | setup_inferior (0); | |
4484 | } | |
4485 | } | |
221e1a37 | 4486 | } |
6efcd9a8 PA |
4487 | |
4488 | /* Now go over all threads that are stopped, and print their current | |
4489 | frame. If all-stop, then if there's a signalled thread, pick | |
4490 | that as current. */ | |
5b6d1e4f | 4491 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4492 | { |
6efcd9a8 PA |
4493 | if (first == NULL) |
4494 | first = thread; | |
4495 | ||
4496 | if (!non_stop) | |
00431a78 | 4497 | thread->set_running (false); |
6efcd9a8 PA |
4498 | else if (thread->state != THREAD_STOPPED) |
4499 | continue; | |
4500 | ||
6efcd9a8 PA |
4501 | if (selected == NULL |
4502 | && thread->suspend.waitstatus_pending_p) | |
4503 | selected = thread; | |
4504 | ||
5d5658a1 PA |
4505 | if (lowest_stopped == NULL |
4506 | || thread->inf->num < lowest_stopped->inf->num | |
4507 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4508 | lowest_stopped = thread; |
4509 | ||
4510 | if (non_stop) | |
4511 | print_one_stopped_thread (thread); | |
4512 | } | |
4513 | ||
4514 | /* In all-stop, we only print the status of one thread, and leave | |
4515 | others with their status pending. */ | |
4516 | if (!non_stop) | |
4517 | { | |
08036331 | 4518 | thread_info *thread = selected; |
6efcd9a8 PA |
4519 | if (thread == NULL) |
4520 | thread = lowest_stopped; | |
4521 | if (thread == NULL) | |
4522 | thread = first; | |
4523 | ||
4524 | print_one_stopped_thread (thread); | |
4525 | } | |
4526 | ||
4527 | /* For "info program". */ | |
08036331 | 4528 | thread_info *thread = inferior_thread (); |
6efcd9a8 | 4529 | if (thread->state == THREAD_STOPPED) |
5b6d1e4f | 4530 | set_last_target_status (this, inferior_ptid, thread->suspend.waitstatus); |
221e1a37 PA |
4531 | } |
4532 | ||
048094ac PA |
4533 | /* Start the remote connection and sync state. */ |
4534 | ||
f6ac5f3d PA |
4535 | void |
4536 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4537 | { |
c8d104ad PA |
4538 | struct remote_state *rs = get_remote_state (); |
4539 | struct packet_config *noack_config; | |
2d717e4f | 4540 | char *wait_status = NULL; |
8621d6a9 | 4541 | |
048094ac PA |
4542 | /* Signal other parts that we're going through the initial setup, |
4543 | and so things may not be stable yet. E.g., we don't try to | |
4544 | install tracepoints until we've relocated symbols. Also, a | |
4545 | Ctrl-C before we're connected and synced up can't interrupt the | |
4546 | target. Instead, it offers to drop the (potentially wedged) | |
4547 | connection. */ | |
4548 | rs->starting_up = 1; | |
4549 | ||
522002f9 | 4550 | QUIT; |
c906108c | 4551 | |
9a7071a8 JB |
4552 | if (interrupt_on_connect) |
4553 | send_interrupt_sequence (); | |
4554 | ||
57e12211 | 4555 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4556 | remote_serial_write ("+", 1); |
1e51243a | 4557 | |
c8d104ad PA |
4558 | /* The first packet we send to the target is the optional "supported |
4559 | packets" request. If the target can answer this, it will tell us | |
4560 | which later probes to skip. */ | |
4561 | remote_query_supported (); | |
4562 | ||
d914c394 | 4563 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4564 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4565 | set_permissions (); |
d914c394 | 4566 | |
57809e5e JK |
4567 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4568 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4569 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4570 | invalid reply and GDB would return error in | |
4571 | remote_hostio_set_filesystem, making remote files access impossible. | |
4572 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4573 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4574 | { | |
4575 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4576 | ||
4577 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4578 | getpkt (&rs->buf, 0); |
4579 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4580 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4581 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4582 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4583 | rs->buf.data ()); |
57809e5e JK |
4584 | } |
4585 | ||
c8d104ad PA |
4586 | /* Next, we possibly activate noack mode. |
4587 | ||
4588 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4589 | enable noack mode if the stub reported a wish for it with | |
4590 | qSupported. | |
4591 | ||
4592 | If set to TRUE, then enable noack mode even if the stub didn't | |
4593 | report it in qSupported. If the stub doesn't reply OK, the | |
4594 | session ends with an error. | |
4595 | ||
4596 | If FALSE, then don't activate noack mode, regardless of what the | |
4597 | stub claimed should be the default with qSupported. */ | |
4598 | ||
4599 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4600 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4601 | { |
4602 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4603 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4604 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4605 | rs->noack_mode = 1; | |
4606 | } | |
4607 | ||
04bd08de | 4608 | if (extended_p) |
5fe04517 PA |
4609 | { |
4610 | /* Tell the remote that we are using the extended protocol. */ | |
4611 | putpkt ("!"); | |
8d64371b | 4612 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4613 | } |
4614 | ||
9b224c5e PA |
4615 | /* Let the target know which signals it is allowed to pass down to |
4616 | the program. */ | |
4617 | update_signals_program_target (); | |
4618 | ||
d962ef82 DJ |
4619 | /* Next, if the target can specify a description, read it. We do |
4620 | this before anything involving memory or registers. */ | |
4621 | target_find_description (); | |
4622 | ||
6c95b8df PA |
4623 | /* Next, now that we know something about the target, update the |
4624 | address spaces in the program spaces. */ | |
4625 | update_address_spaces (); | |
4626 | ||
50c71eaf PA |
4627 | /* On OSs where the list of libraries is global to all |
4628 | processes, we fetch them early. */ | |
f5656ead | 4629 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4630 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4631 | |
6efcd9a8 | 4632 | if (target_is_non_stop_p ()) |
74531fed | 4633 | { |
4082afcc | 4634 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4635 | error (_("Non-stop mode requested, but remote " |
4636 | "does not support non-stop")); | |
74531fed PA |
4637 | |
4638 | putpkt ("QNonStop:1"); | |
8d64371b | 4639 | getpkt (&rs->buf, 0); |
74531fed | 4640 | |
8d64371b TT |
4641 | if (strcmp (rs->buf.data (), "OK") != 0) |
4642 | error (_("Remote refused setting non-stop mode with: %s"), | |
4643 | rs->buf.data ()); | |
74531fed PA |
4644 | |
4645 | /* Find about threads and processes the stub is already | |
4646 | controlling. We default to adding them in the running state. | |
4647 | The '?' query below will then tell us about which threads are | |
4648 | stopped. */ | |
f6ac5f3d | 4649 | this->update_thread_list (); |
74531fed | 4650 | } |
4082afcc | 4651 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4652 | { |
4653 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4654 | Request it explicitly. */ |
74531fed | 4655 | putpkt ("QNonStop:0"); |
8d64371b | 4656 | getpkt (&rs->buf, 0); |
74531fed | 4657 | |
8d64371b TT |
4658 | if (strcmp (rs->buf.data (), "OK") != 0) |
4659 | error (_("Remote refused setting all-stop mode with: %s"), | |
4660 | rs->buf.data ()); | |
74531fed PA |
4661 | } |
4662 | ||
a0743c90 YQ |
4663 | /* Upload TSVs regardless of whether the target is running or not. The |
4664 | remote stub, such as GDBserver, may have some predefined or builtin | |
4665 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4666 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4667 | { |
4668 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4669 | ||
f6ac5f3d | 4670 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4671 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4672 | } | |
4673 | ||
2d717e4f DJ |
4674 | /* Check whether the target is running now. */ |
4675 | putpkt ("?"); | |
8d64371b | 4676 | getpkt (&rs->buf, 0); |
2d717e4f | 4677 | |
6efcd9a8 | 4678 | if (!target_is_non_stop_p ()) |
2d717e4f | 4679 | { |
74531fed | 4680 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4681 | { |
04bd08de | 4682 | if (!extended_p) |
74531fed | 4683 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4684 | |
4685 | /* We're connected, but not running. Drop out before we | |
4686 | call start_remote. */ | |
e278ad5b | 4687 | rs->starting_up = 0; |
c35b1492 | 4688 | return; |
2d717e4f DJ |
4689 | } |
4690 | else | |
74531fed | 4691 | { |
74531fed | 4692 | /* Save the reply for later. */ |
8d64371b TT |
4693 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4694 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4695 | } |
4696 | ||
b7ea362b | 4697 | /* Fetch thread list. */ |
e8032dde | 4698 | target_update_thread_list (); |
b7ea362b | 4699 | |
74531fed PA |
4700 | /* Let the stub know that we want it to return the thread. */ |
4701 | set_continue_thread (minus_one_ptid); | |
4702 | ||
5b6d1e4f | 4703 | if (thread_count (this) == 0) |
b7ea362b PA |
4704 | { |
4705 | /* Target has no concept of threads at all. GDB treats | |
4706 | non-threaded target as single-threaded; add a main | |
4707 | thread. */ | |
4708 | add_current_inferior_and_thread (wait_status); | |
4709 | } | |
4710 | else | |
4711 | { | |
4712 | /* We have thread information; select the thread the target | |
4713 | says should be current. If we're reconnecting to a | |
4714 | multi-threaded program, this will ideally be the thread | |
4715 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4716 | ptid_t curr_thread = get_current_thread (wait_status); |
4717 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4718 | { |
4719 | /* Odd... The target was able to list threads, but not | |
4720 | tell us which thread was current (no "thread" | |
4721 | register in T stop reply?). Just pick the first | |
4722 | thread in the thread list then. */ | |
c9f35b34 KB |
4723 | |
4724 | if (remote_debug) | |
4725 | fprintf_unfiltered (gdb_stdlog, | |
4726 | "warning: couldn't determine remote " | |
4727 | "current thread; picking first in list.\n"); | |
4728 | ||
5b6d1e4f PA |
4729 | for (thread_info *tp : all_non_exited_threads (this, |
4730 | minus_one_ptid)) | |
75c6c844 PA |
4731 | { |
4732 | switch_to_thread (tp); | |
4733 | break; | |
4734 | } | |
b7ea362b | 4735 | } |
75c6c844 | 4736 | else |
5b6d1e4f | 4737 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4738 | } |
74531fed | 4739 | |
6e586cc5 YQ |
4740 | /* init_wait_for_inferior should be called before get_offsets in order |
4741 | to manage `inserted' flag in bp loc in a correct state. | |
4742 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4743 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4744 | start_remote, set `inserted' flag to 1. In the initialization of | |
4745 | inferior, breakpoint_init_inferior should be called first, and then | |
4746 | breakpoint_re_set can be called. If this order is broken, state of | |
4747 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4748 | manipulation. */ | |
4749 | init_wait_for_inferior (); | |
4750 | ||
74531fed PA |
4751 | get_offsets (); /* Get text, data & bss offsets. */ |
4752 | ||
d962ef82 DJ |
4753 | /* If we could not find a description using qXfer, and we know |
4754 | how to do it some other way, try again. This is not | |
4755 | supported for non-stop; it could be, but it is tricky if | |
4756 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4757 | if (remote_read_description_p (this) |
f5656ead | 4758 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4759 | { |
4760 | target_clear_description (); | |
4761 | target_find_description (); | |
4762 | } | |
4763 | ||
74531fed PA |
4764 | /* Use the previously fetched status. */ |
4765 | gdb_assert (wait_status != NULL); | |
8d64371b | 4766 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4767 | rs->cached_wait_status = 1; |
4768 | ||
f6ac5f3d | 4769 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4770 | } |
4771 | else | |
4772 | { | |
68c97600 PA |
4773 | /* Clear WFI global state. Do this before finding about new |
4774 | threads and inferiors, and setting the current inferior. | |
4775 | Otherwise we would clear the proceed status of the current | |
4776 | inferior when we want its stop_soon state to be preserved | |
4777 | (see notice_new_inferior). */ | |
4778 | init_wait_for_inferior (); | |
4779 | ||
74531fed PA |
4780 | /* In non-stop, we will either get an "OK", meaning that there |
4781 | are no stopped threads at this time; or, a regular stop | |
4782 | reply. In the latter case, there may be more than one thread | |
4783 | stopped --- we pull them all out using the vStopped | |
4784 | mechanism. */ | |
8d64371b | 4785 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4786 | { |
722247f1 | 4787 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4788 | |
722247f1 YQ |
4789 | /* remote_notif_get_pending_replies acks this one, and gets |
4790 | the rest out. */ | |
f48ff2a7 | 4791 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4792 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4793 | remote_notif_get_pending_events (notif); |
74531fed | 4794 | } |
2d717e4f | 4795 | |
5b6d1e4f | 4796 | if (thread_count (this) == 0) |
74531fed | 4797 | { |
04bd08de | 4798 | if (!extended_p) |
74531fed | 4799 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4800 | |
c35b1492 PA |
4801 | /* We're connected, but not running. Drop out before we |
4802 | call start_remote. */ | |
e278ad5b | 4803 | rs->starting_up = 0; |
c35b1492 PA |
4804 | return; |
4805 | } | |
74531fed | 4806 | |
74531fed PA |
4807 | /* In non-stop mode, any cached wait status will be stored in |
4808 | the stop reply queue. */ | |
4809 | gdb_assert (wait_status == NULL); | |
f0223081 | 4810 | |
2455069d | 4811 | /* Report all signals during attach/startup. */ |
adc6a863 | 4812 | pass_signals ({}); |
221e1a37 PA |
4813 | |
4814 | /* If there are already stopped threads, mark them stopped and | |
4815 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4816 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4817 | |
4818 | if (target_can_async_p ()) | |
4819 | target_async (1); | |
74531fed | 4820 | } |
c8d104ad | 4821 | |
c8d104ad PA |
4822 | /* If we connected to a live target, do some additional setup. */ |
4823 | if (target_has_execution) | |
4824 | { | |
f4ccffad | 4825 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4826 | remote_check_symbols (); |
c8d104ad | 4827 | } |
50c71eaf | 4828 | |
d5551862 SS |
4829 | /* Possibly the target has been engaged in a trace run started |
4830 | previously; find out where things are at. */ | |
f6ac5f3d | 4831 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4832 | { |
00bf0b85 | 4833 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4834 | |
00bf0b85 SS |
4835 | if (current_trace_status ()->running) |
4836 | printf_filtered (_("Trace is already running on the target.\n")); | |
4837 | ||
f6ac5f3d | 4838 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4839 | |
4840 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4841 | } |
4842 | ||
c0272db5 TW |
4843 | /* Possibly the target has been engaged in a btrace record started |
4844 | previously; find out where things are at. */ | |
4845 | remote_btrace_maybe_reopen (); | |
4846 | ||
1e51243a PA |
4847 | /* The thread and inferior lists are now synchronized with the |
4848 | target, our symbols have been relocated, and we're merged the | |
4849 | target's tracepoints with ours. We're done with basic start | |
4850 | up. */ | |
4851 | rs->starting_up = 0; | |
4852 | ||
a25a5a45 PA |
4853 | /* Maybe breakpoints are global and need to be inserted now. */ |
4854 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4855 | insert_breakpoints (); |
c906108c SS |
4856 | } |
4857 | ||
121b3efd PA |
4858 | const char * |
4859 | remote_target::connection_string () | |
4860 | { | |
4861 | remote_state *rs = get_remote_state (); | |
4862 | ||
4863 | if (rs->remote_desc->name != NULL) | |
4864 | return rs->remote_desc->name; | |
4865 | else | |
4866 | return NULL; | |
4867 | } | |
4868 | ||
c906108c SS |
4869 | /* Open a connection to a remote debugger. |
4870 | NAME is the filename used for communication. */ | |
4871 | ||
f6ac5f3d PA |
4872 | void |
4873 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4874 | { |
f6ac5f3d | 4875 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4876 | } |
4877 | ||
c906108c SS |
4878 | /* Open a connection to a remote debugger using the extended |
4879 | remote gdb protocol. NAME is the filename used for communication. */ | |
4880 | ||
f6ac5f3d PA |
4881 | void |
4882 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4883 | { |
f6ac5f3d | 4884 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4885 | } |
4886 | ||
ca4f7f8b PA |
4887 | /* Reset all packets back to "unknown support". Called when opening a |
4888 | new connection to a remote target. */ | |
c906108c | 4889 | |
d471ea57 | 4890 | static void |
ca4f7f8b | 4891 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4892 | { |
4893 | int i; | |
a744cf53 | 4894 | |
444abaca | 4895 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4896 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4897 | } |
4898 | ||
ca4f7f8b PA |
4899 | /* Initialize all packet configs. */ |
4900 | ||
4901 | static void | |
4902 | init_all_packet_configs (void) | |
4903 | { | |
4904 | int i; | |
4905 | ||
4906 | for (i = 0; i < PACKET_MAX; i++) | |
4907 | { | |
4908 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4909 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4910 | } | |
4911 | } | |
4912 | ||
23860348 | 4913 | /* Symbol look-up. */ |
dc8acb97 | 4914 | |
6b8edb51 PA |
4915 | void |
4916 | remote_target::remote_check_symbols () | |
dc8acb97 | 4917 | { |
8d64371b | 4918 | char *tmp; |
dc8acb97 MS |
4919 | int end; |
4920 | ||
63154eca PA |
4921 | /* The remote side has no concept of inferiors that aren't running |
4922 | yet, it only knows about running processes. If we're connected | |
4923 | but our current inferior is not running, we should not invite the | |
4924 | remote target to request symbol lookups related to its | |
4925 | (unrelated) current process. */ | |
4926 | if (!target_has_execution) | |
4927 | return; | |
4928 | ||
4082afcc | 4929 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4930 | return; |
4931 | ||
63154eca PA |
4932 | /* Make sure the remote is pointing at the right process. Note |
4933 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4934 | set_general_process (); |
4935 | ||
6d820c5c DJ |
4936 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4937 | because we need both at the same time. */ | |
66644cd3 | 4938 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 4939 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 4940 | |
23860348 | 4941 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4942 | |
4943 | putpkt ("qSymbol::"); | |
8d64371b | 4944 | getpkt (&reply, 0); |
28170b88 | 4945 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 4946 | |
8d64371b | 4947 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 4948 | { |
77e371c0 TT |
4949 | struct bound_minimal_symbol sym; |
4950 | ||
dc8acb97 | 4951 | tmp = &reply[8]; |
66644cd3 AB |
4952 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
4953 | strlen (tmp) / 2); | |
dc8acb97 | 4954 | msg[end] = '\0'; |
66644cd3 | 4955 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 4956 | if (sym.minsym == NULL) |
66644cd3 AB |
4957 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
4958 | &reply[8]); | |
dc8acb97 | 4959 | else |
2bbe3cc1 | 4960 | { |
f5656ead | 4961 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4962 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4963 | |
4964 | /* If this is a function address, return the start of code | |
4965 | instead of any data function descriptor. */ | |
f5656ead | 4966 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4967 | sym_addr, |
8b88a78e | 4968 | current_top_target ()); |
2bbe3cc1 | 4969 | |
66644cd3 | 4970 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 4971 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 4972 | } |
66644cd3 AB |
4973 | |
4974 | putpkt (msg.data ()); | |
8d64371b | 4975 | getpkt (&reply, 0); |
dc8acb97 MS |
4976 | } |
4977 | } | |
4978 | ||
9db8d71f | 4979 | static struct serial * |
baa336ce | 4980 | remote_serial_open (const char *name) |
9db8d71f DJ |
4981 | { |
4982 | static int udp_warning = 0; | |
4983 | ||
4984 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4985 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4986 | serial connection is reliable and not the serial connection promising | |
4987 | to be. */ | |
61012eef | 4988 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4989 | { |
3e43a32a MS |
4990 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4991 | "Some events may be lost, rendering further debugging " | |
4992 | "impossible.")); | |
9db8d71f DJ |
4993 | udp_warning = 1; |
4994 | } | |
4995 | ||
4996 | return serial_open (name); | |
4997 | } | |
4998 | ||
d914c394 SS |
4999 | /* Inform the target of our permission settings. The permission flags |
5000 | work without this, but if the target knows the settings, it can do | |
5001 | a couple things. First, it can add its own check, to catch cases | |
5002 | that somehow manage to get by the permissions checks in target | |
5003 | methods. Second, if the target is wired to disallow particular | |
5004 | settings (for instance, a system in the field that is not set up to | |
5005 | be able to stop at a breakpoint), it can object to any unavailable | |
5006 | permissions. */ | |
5007 | ||
5008 | void | |
f6ac5f3d | 5009 | remote_target::set_permissions () |
d914c394 SS |
5010 | { |
5011 | struct remote_state *rs = get_remote_state (); | |
5012 | ||
8d64371b | 5013 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5014 | "WriteReg:%x;WriteMem:%x;" |
5015 | "InsertBreak:%x;InsertTrace:%x;" | |
5016 | "InsertFastTrace:%x;Stop:%x", | |
5017 | may_write_registers, may_write_memory, | |
5018 | may_insert_breakpoints, may_insert_tracepoints, | |
5019 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5020 | putpkt (rs->buf); |
8d64371b | 5021 | getpkt (&rs->buf, 0); |
d914c394 SS |
5022 | |
5023 | /* If the target didn't like the packet, warn the user. Do not try | |
5024 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5025 | if (strcmp (rs->buf.data (), "OK") != 0) |
5026 | warning (_("Remote refused setting permissions with: %s"), | |
5027 | rs->buf.data ()); | |
d914c394 SS |
5028 | } |
5029 | ||
be2a5f71 DJ |
5030 | /* This type describes each known response to the qSupported |
5031 | packet. */ | |
5032 | struct protocol_feature | |
5033 | { | |
5034 | /* The name of this protocol feature. */ | |
5035 | const char *name; | |
5036 | ||
5037 | /* The default for this protocol feature. */ | |
5038 | enum packet_support default_support; | |
5039 | ||
5040 | /* The function to call when this feature is reported, or after | |
5041 | qSupported processing if the feature is not supported. | |
5042 | The first argument points to this structure. The second | |
5043 | argument indicates whether the packet requested support be | |
5044 | enabled, disabled, or probed (or the default, if this function | |
5045 | is being called at the end of processing and this feature was | |
5046 | not reported). The third argument may be NULL; if not NULL, it | |
5047 | is a NUL-terminated string taken from the packet following | |
5048 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5049 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5050 | enum packet_support, const char *); | |
be2a5f71 DJ |
5051 | |
5052 | /* The corresponding packet for this feature. Only used if | |
5053 | FUNC is remote_supported_packet. */ | |
5054 | int packet; | |
5055 | }; | |
5056 | ||
be2a5f71 | 5057 | static void |
6b8edb51 PA |
5058 | remote_supported_packet (remote_target *remote, |
5059 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5060 | enum packet_support support, |
5061 | const char *argument) | |
5062 | { | |
5063 | if (argument) | |
5064 | { | |
5065 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5066 | " \"%s\"."), feature->name); | |
5067 | return; | |
5068 | } | |
5069 | ||
4082afcc | 5070 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5071 | } |
be2a5f71 | 5072 | |
6b8edb51 PA |
5073 | void |
5074 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5075 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5076 | { |
5077 | struct remote_state *rs = get_remote_state (); | |
5078 | ||
5079 | int packet_size; | |
5080 | char *value_end; | |
5081 | ||
5082 | if (support != PACKET_ENABLE) | |
5083 | return; | |
5084 | ||
5085 | if (value == NULL || *value == '\0') | |
5086 | { | |
5087 | warning (_("Remote target reported \"%s\" without a size."), | |
5088 | feature->name); | |
5089 | return; | |
5090 | } | |
5091 | ||
5092 | errno = 0; | |
5093 | packet_size = strtol (value, &value_end, 16); | |
5094 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5095 | { | |
5096 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5097 | feature->name, value); | |
5098 | return; | |
5099 | } | |
5100 | ||
be2a5f71 DJ |
5101 | /* Record the new maximum packet size. */ |
5102 | rs->explicit_packet_size = packet_size; | |
5103 | } | |
5104 | ||
cb8c24b6 | 5105 | static void |
6b8edb51 PA |
5106 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5107 | enum packet_support support, const char *value) | |
5108 | { | |
5109 | remote->remote_packet_size (feature, support, value); | |
5110 | } | |
5111 | ||
dc473cfb | 5112 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5113 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5114 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5115 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5116 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5117 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5118 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5119 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5120 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5121 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5122 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5123 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5124 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5125 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5126 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5127 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5128 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5129 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5130 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5131 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5132 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5133 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5134 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5135 | PACKET_QPassSignals }, | |
82075af2 JS |
5136 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5137 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5138 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5139 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5140 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5141 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5142 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5143 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5144 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5145 | PACKET_QEnvironmentHexEncoded }, | |
5146 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5147 | PACKET_QEnvironmentReset }, | |
5148 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5149 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5150 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5151 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5152 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5153 | PACKET_multiprocess_feature }, | |
5154 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5155 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5156 | PACKET_qXfer_siginfo_read }, | |
5157 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5158 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5159 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5160 | PACKET_ConditionalTracepoints }, |
4082afcc | 5161 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5162 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5163 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5164 | PACKET_BreakpointCommands }, |
4082afcc | 5165 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5166 | PACKET_FastTracepoints }, |
4082afcc | 5167 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5168 | PACKET_StaticTracepoints }, |
4082afcc | 5169 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5170 | PACKET_InstallInTrace}, |
4082afcc PA |
5171 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5172 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5173 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5174 | PACKET_bc }, | |
5175 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5176 | PACKET_bs }, | |
409873ef SS |
5177 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5178 | PACKET_TracepointSource }, | |
d914c394 SS |
5179 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5180 | PACKET_QAllow }, | |
4082afcc PA |
5181 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5182 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5183 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5184 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5185 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5186 | PACKET_qXfer_uib }, | |
03583c20 UW |
5187 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5188 | PACKET_QDisableRandomization }, | |
d1feda86 | 5189 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5190 | { "QTBuffer:size", PACKET_DISABLE, |
5191 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5192 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5193 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5194 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5195 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5196 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5197 | PACKET_qXfer_btrace }, |
5198 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5199 | PACKET_qXfer_btrace_conf }, |
5200 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5201 | PACKET_Qbtrace_conf_bts_size }, |
5202 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5203 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5204 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5205 | PACKET_fork_event_feature }, | |
5206 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5207 | PACKET_vfork_event_feature }, | |
94585166 DB |
5208 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5209 | PACKET_exec_event_feature }, | |
b20a6524 | 5210 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5211 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5212 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5213 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5214 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
5215 | }; |
5216 | ||
c8d5aac9 L |
5217 | static char *remote_support_xml; |
5218 | ||
5219 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5220 | ||
5221 | void | |
6e39997a | 5222 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5223 | { |
5224 | #if defined(HAVE_LIBEXPAT) | |
5225 | if (remote_support_xml == NULL) | |
c4f7c687 | 5226 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5227 | else |
5228 | { | |
5229 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5230 | char *saveptr; |
5231 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5232 | |
5233 | do | |
5234 | { | |
5235 | if (strcmp (p, xml) == 0) | |
5236 | { | |
5237 | /* already there */ | |
5238 | xfree (copy); | |
5239 | return; | |
5240 | } | |
5241 | } | |
ca3a04f6 | 5242 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5243 | xfree (copy); |
5244 | ||
94b0dee1 PA |
5245 | remote_support_xml = reconcat (remote_support_xml, |
5246 | remote_support_xml, ",", xml, | |
5247 | (char *) NULL); | |
c8d5aac9 L |
5248 | } |
5249 | #endif | |
5250 | } | |
5251 | ||
69b6ecb0 TT |
5252 | static void |
5253 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5254 | { |
69b6ecb0 TT |
5255 | if (!msg->empty ()) |
5256 | msg->append (";"); | |
5257 | msg->append (append); | |
c8d5aac9 L |
5258 | } |
5259 | ||
6b8edb51 PA |
5260 | void |
5261 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5262 | { |
5263 | struct remote_state *rs = get_remote_state (); | |
5264 | char *next; | |
5265 | int i; | |
5266 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5267 | ||
5268 | /* The packet support flags are handled differently for this packet | |
5269 | than for most others. We treat an error, a disabled packet, and | |
5270 | an empty response identically: any features which must be reported | |
5271 | to be used will be automatically disabled. An empty buffer | |
5272 | accomplishes this, since that is also the representation for a list | |
5273 | containing no features. */ | |
5274 | ||
5275 | rs->buf[0] = 0; | |
4082afcc | 5276 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5277 | { |
69b6ecb0 | 5278 | std::string q; |
c8d5aac9 | 5279 | |
73b8c1fd | 5280 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5281 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5282 | |
f7e6eed5 | 5283 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5284 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5285 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5286 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5287 | |
69b6ecb0 | 5288 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5289 | |
8020350c DB |
5290 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5291 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5292 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5293 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5294 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5295 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5296 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5297 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5298 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5299 | |
750ce8d1 | 5300 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5301 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5302 | |
65706a29 | 5303 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5304 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5305 | |
f2faf941 | 5306 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5307 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5308 | |
b35d5edb PA |
5309 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5310 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5311 | if (remote_support_xml != NULL |
5312 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5313 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5314 | |
69b6ecb0 TT |
5315 | q = "qSupported:" + q; |
5316 | putpkt (q.c_str ()); | |
94b0dee1 | 5317 | |
8d64371b | 5318 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5319 | |
5320 | /* If an error occured, warn, but do not return - just reset the | |
5321 | buffer to empty and go on to disable features. */ | |
5322 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5323 | == PACKET_ERROR) | |
5324 | { | |
8d64371b | 5325 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5326 | rs->buf[0] = 0; |
5327 | } | |
5328 | } | |
5329 | ||
5330 | memset (seen, 0, sizeof (seen)); | |
5331 | ||
8d64371b | 5332 | next = rs->buf.data (); |
be2a5f71 DJ |
5333 | while (*next) |
5334 | { | |
5335 | enum packet_support is_supported; | |
5336 | char *p, *end, *name_end, *value; | |
5337 | ||
5338 | /* First separate out this item from the rest of the packet. If | |
5339 | there's another item after this, we overwrite the separator | |
5340 | (terminated strings are much easier to work with). */ | |
5341 | p = next; | |
5342 | end = strchr (p, ';'); | |
5343 | if (end == NULL) | |
5344 | { | |
5345 | end = p + strlen (p); | |
5346 | next = end; | |
5347 | } | |
5348 | else | |
5349 | { | |
89be2091 DJ |
5350 | *end = '\0'; |
5351 | next = end + 1; | |
5352 | ||
be2a5f71 DJ |
5353 | if (end == p) |
5354 | { | |
5355 | warning (_("empty item in \"qSupported\" response")); | |
5356 | continue; | |
5357 | } | |
be2a5f71 DJ |
5358 | } |
5359 | ||
5360 | name_end = strchr (p, '='); | |
5361 | if (name_end) | |
5362 | { | |
5363 | /* This is a name=value entry. */ | |
5364 | is_supported = PACKET_ENABLE; | |
5365 | value = name_end + 1; | |
5366 | *name_end = '\0'; | |
5367 | } | |
5368 | else | |
5369 | { | |
5370 | value = NULL; | |
5371 | switch (end[-1]) | |
5372 | { | |
5373 | case '+': | |
5374 | is_supported = PACKET_ENABLE; | |
5375 | break; | |
5376 | ||
5377 | case '-': | |
5378 | is_supported = PACKET_DISABLE; | |
5379 | break; | |
5380 | ||
5381 | case '?': | |
5382 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5383 | break; | |
5384 | ||
5385 | default: | |
3e43a32a MS |
5386 | warning (_("unrecognized item \"%s\" " |
5387 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5388 | continue; |
5389 | } | |
5390 | end[-1] = '\0'; | |
5391 | } | |
5392 | ||
5393 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5394 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5395 | { | |
5396 | const struct protocol_feature *feature; | |
5397 | ||
5398 | seen[i] = 1; | |
5399 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5400 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5401 | break; |
5402 | } | |
5403 | } | |
5404 | ||
5405 | /* If we increased the packet size, make sure to increase the global | |
5406 | buffer size also. We delay this until after parsing the entire | |
5407 | qSupported packet, because this is the same buffer we were | |
5408 | parsing. */ | |
8d64371b TT |
5409 | if (rs->buf.size () < rs->explicit_packet_size) |
5410 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5411 | |
5412 | /* Handle the defaults for unmentioned features. */ | |
5413 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5414 | if (!seen[i]) | |
5415 | { | |
5416 | const struct protocol_feature *feature; | |
5417 | ||
5418 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5419 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5420 | } |
5421 | } | |
5422 | ||
048094ac PA |
5423 | /* Serial QUIT handler for the remote serial descriptor. |
5424 | ||
5425 | Defers handling a Ctrl-C until we're done with the current | |
5426 | command/response packet sequence, unless: | |
5427 | ||
5428 | - We're setting up the connection. Don't send a remote interrupt | |
5429 | request, as we're not fully synced yet. Quit immediately | |
5430 | instead. | |
5431 | ||
5432 | - The target has been resumed in the foreground | |
223ffa71 | 5433 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5434 | packet, and we're blocked waiting for the stop reply, thus a |
5435 | Ctrl-C should be immediately sent to the target. | |
5436 | ||
5437 | - We get a second Ctrl-C while still within the same serial read or | |
5438 | write. In that case the serial is seemingly wedged --- offer to | |
5439 | quit/disconnect. | |
5440 | ||
5441 | - We see a second Ctrl-C without target response, after having | |
5442 | previously interrupted the target. In that case the target/stub | |
5443 | is probably wedged --- offer to quit/disconnect. | |
5444 | */ | |
5445 | ||
6b8edb51 PA |
5446 | void |
5447 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5448 | { |
5449 | struct remote_state *rs = get_remote_state (); | |
5450 | ||
5451 | if (check_quit_flag ()) | |
5452 | { | |
5453 | /* If we're starting up, we're not fully synced yet. Quit | |
5454 | immediately. */ | |
5455 | if (rs->starting_up) | |
5456 | quit (); | |
5457 | else if (rs->got_ctrlc_during_io) | |
5458 | { | |
5459 | if (query (_("The target is not responding to GDB commands.\n" | |
5460 | "Stop debugging it? "))) | |
5b6d1e4f | 5461 | remote_unpush_and_throw (this); |
048094ac PA |
5462 | } |
5463 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5464 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5465 | interrupt_query (); |
5466 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5467 | an interrupt request. */ | |
223ffa71 | 5468 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5469 | target_interrupt (); |
048094ac PA |
5470 | else |
5471 | rs->got_ctrlc_during_io = 1; | |
5472 | } | |
5473 | } | |
5474 | ||
6b8edb51 PA |
5475 | /* The remote_target that is current while the quit handler is |
5476 | overridden with remote_serial_quit_handler. */ | |
5477 | static remote_target *curr_quit_handler_target; | |
5478 | ||
5479 | static void | |
5480 | remote_serial_quit_handler () | |
5481 | { | |
5482 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5483 | } | |
5484 | ||
5b6d1e4f PA |
5485 | /* Remove the remote target from the target stack of each inferior |
5486 | that is using it. Upper targets depend on it so remove them | |
5487 | first. */ | |
78a095c3 JK |
5488 | |
5489 | static void | |
5b6d1e4f | 5490 | remote_unpush_target (remote_target *target) |
78a095c3 | 5491 | { |
5b6d1e4f PA |
5492 | /* We have to unpush the target from all inferiors, even those that |
5493 | aren't running. */ | |
5494 | scoped_restore_current_inferior restore_current_inferior; | |
5495 | ||
5496 | for (inferior *inf : all_inferiors (target)) | |
5497 | { | |
5498 | switch_to_inferior_no_thread (inf); | |
5499 | pop_all_targets_at_and_above (process_stratum); | |
5500 | generic_mourn_inferior (); | |
5501 | } | |
78a095c3 | 5502 | } |
be2a5f71 | 5503 | |
048094ac | 5504 | static void |
5b6d1e4f | 5505 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5506 | { |
5b6d1e4f | 5507 | remote_unpush_target (target); |
048094ac PA |
5508 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5509 | } | |
5510 | ||
f6ac5f3d PA |
5511 | void |
5512 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5513 | { |
6b8edb51 | 5514 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5515 | |
c906108c | 5516 | if (name == 0) |
8a3fe4f8 | 5517 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5518 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5519 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5520 | |
2d717e4f | 5521 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5522 | Ask this question first, before target_preopen has a chance to kill |
5523 | anything. */ | |
5b6d1e4f | 5524 | if (curr_remote != NULL && !target_has_execution) |
2d717e4f | 5525 | { |
78a095c3 JK |
5526 | if (from_tty |
5527 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5528 | error (_("Still connected.")); |
5529 | } | |
5530 | ||
78a095c3 | 5531 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5532 | target_preopen (from_tty); |
5533 | ||
ad9a8f3f | 5534 | remote_fileio_reset (); |
1dd41f16 NS |
5535 | reopen_exec_file (); |
5536 | reread_symbols (); | |
5537 | ||
6b8edb51 PA |
5538 | remote_target *remote |
5539 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5540 | target_ops_up target_holder (remote); | |
5541 | ||
5542 | remote_state *rs = remote->get_remote_state (); | |
5543 | ||
5544 | /* See FIXME above. */ | |
5545 | if (!target_async_permitted) | |
5546 | rs->wait_forever_enabled_p = 1; | |
5547 | ||
5d93a237 TT |
5548 | rs->remote_desc = remote_serial_open (name); |
5549 | if (!rs->remote_desc) | |
c906108c SS |
5550 | perror_with_name (name); |
5551 | ||
5552 | if (baud_rate != -1) | |
5553 | { | |
5d93a237 | 5554 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5555 | { |
9b74d5d3 KB |
5556 | /* The requested speed could not be set. Error out to |
5557 | top level after closing remote_desc. Take care to | |
5558 | set remote_desc to NULL to avoid closing remote_desc | |
5559 | more than once. */ | |
5d93a237 TT |
5560 | serial_close (rs->remote_desc); |
5561 | rs->remote_desc = NULL; | |
c906108c SS |
5562 | perror_with_name (name); |
5563 | } | |
5564 | } | |
5565 | ||
236af5e3 | 5566 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5567 | serial_raw (rs->remote_desc); |
c906108c SS |
5568 | |
5569 | /* If there is something sitting in the buffer we might take it as a | |
5570 | response to a command, which would be bad. */ | |
5d93a237 | 5571 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5572 | |
5573 | if (from_tty) | |
5574 | { | |
5575 | puts_filtered ("Remote debugging using "); | |
5576 | puts_filtered (name); | |
5577 | puts_filtered ("\n"); | |
5578 | } | |
d9f719f1 | 5579 | |
6b8edb51 | 5580 | /* Switch to using the remote target now. */ |
dea57a62 | 5581 | push_target (std::move (target_holder)); |
c906108c | 5582 | |
74531fed | 5583 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5584 | rs->remote_async_inferior_event_token |
74531fed | 5585 | = create_async_event_handler (remote_async_inferior_event_handler, |
6b8edb51 PA |
5586 | remote); |
5587 | rs->notif_state = remote_notif_state_allocate (remote); | |
74531fed | 5588 | |
be2a5f71 DJ |
5589 | /* Reset the target state; these things will be queried either by |
5590 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5591 | reset_all_packet_configs_support (); |
74531fed | 5592 | rs->cached_wait_status = 0; |
be2a5f71 | 5593 | rs->explicit_packet_size = 0; |
a6f3e723 | 5594 | rs->noack_mode = 0; |
82f73884 | 5595 | rs->extended = extended_p; |
e24a49d8 | 5596 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5597 | rs->ctrlc_pending_p = 0; |
048094ac | 5598 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5599 | |
47f8a51d TT |
5600 | rs->general_thread = not_sent_ptid; |
5601 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5602 | rs->remote_traceframe_number = -1; |
c906108c | 5603 | |
3a00c802 PA |
5604 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5605 | ||
9d1f7ab2 | 5606 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5607 | rs->use_threadinfo_query = 1; |
5608 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5609 | |
dd194f6b | 5610 | rs->readahead_cache.invalidate (); |
80152258 | 5611 | |
c6ebd6cf | 5612 | if (target_async_permitted) |
92d1e331 | 5613 | { |
92d1e331 DJ |
5614 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5615 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5616 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5617 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5618 | around this. Eventually a mechanism that allows |
92d1e331 | 5619 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5620 | implemented. */ |
6b8edb51 | 5621 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5622 | } |
5623 | ||
23860348 | 5624 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5625 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5626 | |
36918e70 | 5627 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5628 | target (we'd otherwise be in an inconsistent state) and then |
5629 | propogate the error on up the exception chain. This ensures that | |
5630 | the caller doesn't stumble along blindly assuming that the | |
5631 | function succeeded. The CLI doesn't have this problem but other | |
5632 | UI's, such as MI do. | |
36918e70 AC |
5633 | |
5634 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5635 | this function should return an error indication letting the | |
ce2826aa | 5636 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5637 | ``target remote'' is directly wired to this function making that |
5638 | impossible. On a positive note, the CLI side of this problem has | |
5639 | been fixed - the function set_cmd_context() makes it possible for | |
5640 | all the ``target ....'' commands to share a common callback | |
5641 | function. See cli-dump.c. */ | |
109c3e39 | 5642 | { |
2d717e4f | 5643 | |
a70b8144 | 5644 | try |
04bd08de | 5645 | { |
6b8edb51 | 5646 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5647 | } |
230d2906 | 5648 | catch (const gdb_exception &ex) |
109c3e39 | 5649 | { |
c8d104ad PA |
5650 | /* Pop the partially set up target - unless something else did |
5651 | already before throwing the exception. */ | |
6b8edb51 | 5652 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5653 | remote_unpush_target (remote); |
eedc3f4f | 5654 | throw; |
109c3e39 AC |
5655 | } |
5656 | } | |
c906108c | 5657 | |
6b8edb51 | 5658 | remote_btrace_reset (rs); |
f4abbc16 | 5659 | |
c6ebd6cf | 5660 | if (target_async_permitted) |
6b8edb51 | 5661 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5662 | } |
5663 | ||
de0d863e DB |
5664 | /* Detach the specified process. */ |
5665 | ||
6b8edb51 PA |
5666 | void |
5667 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5668 | { |
5669 | struct remote_state *rs = get_remote_state (); | |
5670 | ||
4c7333b3 PA |
5671 | /* This should not be necessary, but the handling for D;PID in |
5672 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5673 | selected process points to the same process we're detaching, | |
5674 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5675 | does not. Since it's easy and cheap, work around it by forcing | |
5676 | GDBserver to select GDB's current process. */ | |
5677 | set_general_process (); | |
5678 | ||
de0d863e | 5679 | if (remote_multi_process_p (rs)) |
8d64371b | 5680 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5681 | else |
8d64371b | 5682 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5683 | |
5684 | putpkt (rs->buf); | |
8d64371b | 5685 | getpkt (&rs->buf, 0); |
de0d863e DB |
5686 | |
5687 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5688 | ; | |
5689 | else if (rs->buf[0] == '\0') | |
5690 | error (_("Remote doesn't know how to detach")); | |
5691 | else | |
5692 | error (_("Can't detach process.")); | |
5693 | } | |
5694 | ||
5695 | /* This detaches a program to which we previously attached, using | |
5696 | inferior_ptid to identify the process. After this is done, GDB | |
5697 | can be used to debug some other program. We better not have left | |
5698 | any breakpoints in the target program or it'll die when it hits | |
5699 | one. */ | |
c906108c | 5700 | |
6b8edb51 | 5701 | void |
00431a78 | 5702 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5703 | { |
e99b03dc | 5704 | int pid = inferior_ptid.pid (); |
d01949b6 | 5705 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5706 | int is_fork_parent; |
c906108c | 5707 | |
2d717e4f DJ |
5708 | if (!target_has_execution) |
5709 | error (_("No process to detach from.")); | |
5710 | ||
0f48b757 | 5711 | target_announce_detach (from_tty); |
7cee1e54 | 5712 | |
c906108c | 5713 | /* Tell the remote target to detach. */ |
de0d863e | 5714 | remote_detach_pid (pid); |
82f73884 | 5715 | |
8020350c | 5716 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5717 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
7cee1e54 | 5718 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5719 | |
5b6d1e4f | 5720 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 5721 | |
de0d863e DB |
5722 | /* Check to see if we are detaching a fork parent. Note that if we |
5723 | are detaching a fork child, tp == NULL. */ | |
5724 | is_fork_parent = (tp != NULL | |
5725 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5726 | ||
5727 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5728 | breakpoints that should be available for the followed inferior. */ | |
5729 | if (!is_fork_parent) | |
f67c0c91 | 5730 | { |
249b5733 PA |
5731 | /* Save the pid as a string before mourning, since that will |
5732 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5733 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5734 | |
5735 | target_mourn_inferior (inferior_ptid); | |
5736 | if (print_inferior_events) | |
5737 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5738 | inf->num, infpid.c_str ()); | |
5739 | } | |
de0d863e DB |
5740 | else |
5741 | { | |
5742 | inferior_ptid = null_ptid; | |
00431a78 | 5743 | detach_inferior (current_inferior ()); |
de0d863e | 5744 | } |
2d717e4f DJ |
5745 | } |
5746 | ||
f6ac5f3d PA |
5747 | void |
5748 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5749 | { |
00431a78 | 5750 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5751 | } |
5752 | ||
f6ac5f3d PA |
5753 | void |
5754 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5755 | { |
00431a78 | 5756 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5757 | } |
5758 | ||
5759 | /* Target follow-fork function for remote targets. On entry, and | |
5760 | at return, the current inferior is the fork parent. | |
5761 | ||
5762 | Note that although this is currently only used for extended-remote, | |
5763 | it is named remote_follow_fork in anticipation of using it for the | |
5764 | remote target as well. */ | |
5765 | ||
f6ac5f3d PA |
5766 | int |
5767 | remote_target::follow_fork (int follow_child, int detach_fork) | |
de0d863e DB |
5768 | { |
5769 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5770 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5771 | |
c269dbdb DB |
5772 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5773 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5774 | { |
5775 | /* When following the parent and detaching the child, we detach | |
5776 | the child here. For the case of following the child and | |
5777 | detaching the parent, the detach is done in the target- | |
5778 | independent follow fork code in infrun.c. We can't use | |
5779 | target_detach when detaching an unfollowed child because | |
5780 | the client side doesn't know anything about the child. */ | |
5781 | if (detach_fork && !follow_child) | |
5782 | { | |
5783 | /* Detach the fork child. */ | |
5784 | ptid_t child_ptid; | |
5785 | pid_t child_pid; | |
5786 | ||
5787 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5788 | child_pid = child_ptid.pid (); |
de0d863e DB |
5789 | |
5790 | remote_detach_pid (child_pid); | |
de0d863e DB |
5791 | } |
5792 | } | |
5793 | return 0; | |
c906108c SS |
5794 | } |
5795 | ||
94585166 DB |
5796 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5797 | in the program space of the new inferior. On entry and at return the | |
5798 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5799 | inferior, which may be the same as the exec'ing inferior unless | |
5800 | follow-exec-mode is "new". */ | |
5801 | ||
f6ac5f3d | 5802 | void |
4ca51187 | 5803 | remote_target::follow_exec (struct inferior *inf, const char *execd_pathname) |
94585166 DB |
5804 | { |
5805 | /* We know that this is a target file name, so if it has the "target:" | |
5806 | prefix we strip it off before saving it in the program space. */ | |
5807 | if (is_target_filename (execd_pathname)) | |
5808 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5809 | ||
5810 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5811 | } | |
5812 | ||
6ad8ae5c DJ |
5813 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5814 | ||
f6ac5f3d PA |
5815 | void |
5816 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5817 | { |
43ff13b4 | 5818 | if (args) |
2d717e4f | 5819 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5820 | |
8020350c | 5821 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
5822 | target_mourn_inferior won't unpush, and |
5823 | remote_target::mourn_inferior won't unpush if there is more than | |
5824 | one inferior left. */ | |
5825 | remote_unpush_target (this); | |
2d717e4f | 5826 | |
43ff13b4 JM |
5827 | if (from_tty) |
5828 | puts_filtered ("Ending remote debugging.\n"); | |
5829 | } | |
5830 | ||
2d717e4f DJ |
5831 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5832 | be chatty about it. */ | |
5833 | ||
f6ac5f3d PA |
5834 | void |
5835 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5836 | { |
5837 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5838 | int pid; |
96ef3384 | 5839 | char *wait_status = NULL; |
2d717e4f | 5840 | |
74164c56 | 5841 | pid = parse_pid_to_attach (args); |
2d717e4f | 5842 | |
74164c56 JK |
5843 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5844 | way as in other targets. */ | |
2d717e4f | 5845 | |
4082afcc | 5846 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5847 | error (_("This target does not support attaching to a process")); |
5848 | ||
7cee1e54 PA |
5849 | if (from_tty) |
5850 | { | |
d9fa87f4 | 5851 | const char *exec_file = get_exec_file (0); |
7cee1e54 PA |
5852 | |
5853 | if (exec_file) | |
5854 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 5855 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5856 | else |
5857 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 5858 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5859 | } |
5860 | ||
8d64371b | 5861 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 5862 | putpkt (rs->buf); |
8d64371b | 5863 | getpkt (&rs->buf, 0); |
2d717e4f | 5864 | |
4082afcc PA |
5865 | switch (packet_ok (rs->buf, |
5866 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5867 | { |
4082afcc | 5868 | case PACKET_OK: |
6efcd9a8 | 5869 | if (!target_is_non_stop_p ()) |
74531fed PA |
5870 | { |
5871 | /* Save the reply for later. */ | |
8d64371b TT |
5872 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5873 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 5874 | } |
8d64371b | 5875 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5876 | error (_("Attaching to %s failed with: %s"), |
a068643d | 5877 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 5878 | rs->buf.data ()); |
4082afcc PA |
5879 | break; |
5880 | case PACKET_UNKNOWN: | |
5881 | error (_("This target does not support attaching to a process")); | |
5882 | default: | |
50fa3001 SDJ |
5883 | error (_("Attaching to %s failed"), |
5884 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 5885 | } |
2d717e4f | 5886 | |
9ab8741a | 5887 | set_current_inferior (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 5888 | |
f2907e49 | 5889 | inferior_ptid = ptid_t (pid); |
79d7f229 | 5890 | |
6efcd9a8 | 5891 | if (target_is_non_stop_p ()) |
bad34192 PA |
5892 | { |
5893 | struct thread_info *thread; | |
79d7f229 | 5894 | |
bad34192 | 5895 | /* Get list of threads. */ |
f6ac5f3d | 5896 | update_thread_list (); |
82f73884 | 5897 | |
00431a78 | 5898 | thread = first_thread_of_inferior (current_inferior ()); |
bad34192 PA |
5899 | if (thread) |
5900 | inferior_ptid = thread->ptid; | |
5901 | else | |
f2907e49 | 5902 | inferior_ptid = ptid_t (pid); |
bad34192 PA |
5903 | |
5904 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5905 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5906 | } |
74531fed | 5907 | else |
bad34192 PA |
5908 | { |
5909 | /* Now, if we have thread information, update inferior_ptid. */ | |
5910 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5911 | ||
5912 | /* Add the main thread to the thread list. */ | |
5b6d1e4f | 5913 | thread_info *thr = add_thread_silent (this, inferior_ptid); |
00aecdcf PA |
5914 | /* Don't consider the thread stopped until we've processed the |
5915 | saved stop reply. */ | |
5b6d1e4f | 5916 | set_executing (this, thr->ptid, true); |
bad34192 | 5917 | } |
c0a2216e | 5918 | |
96ef3384 UW |
5919 | /* Next, if the target can specify a description, read it. We do |
5920 | this before anything involving memory or registers. */ | |
5921 | target_find_description (); | |
5922 | ||
6efcd9a8 | 5923 | if (!target_is_non_stop_p ()) |
74531fed PA |
5924 | { |
5925 | /* Use the previously fetched status. */ | |
5926 | gdb_assert (wait_status != NULL); | |
5927 | ||
5928 | if (target_can_async_p ()) | |
5929 | { | |
722247f1 | 5930 | struct notif_event *reply |
6b8edb51 | 5931 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 5932 | |
722247f1 | 5933 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5934 | |
6a3753b3 | 5935 | target_async (1); |
74531fed PA |
5936 | } |
5937 | else | |
5938 | { | |
5939 | gdb_assert (wait_status != NULL); | |
8d64371b | 5940 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
5941 | rs->cached_wait_status = 1; |
5942 | } | |
5943 | } | |
5944 | else | |
5945 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5946 | } |
5947 | ||
b9c1d481 AS |
5948 | /* Implementation of the to_post_attach method. */ |
5949 | ||
f6ac5f3d PA |
5950 | void |
5951 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5952 | { |
6efcd9a8 PA |
5953 | /* Get text, data & bss offsets. */ |
5954 | get_offsets (); | |
5955 | ||
b9c1d481 AS |
5956 | /* In certain cases GDB might not have had the chance to start |
5957 | symbol lookup up until now. This could happen if the debugged | |
5958 | binary is not using shared libraries, the vsyscall page is not | |
5959 | present (on Linux) and the binary itself hadn't changed since the | |
5960 | debugging process was started. */ | |
5961 | if (symfile_objfile != NULL) | |
5962 | remote_check_symbols(); | |
5963 | } | |
5964 | ||
c906108c | 5965 | \f |
506fb367 DJ |
5966 | /* Check for the availability of vCont. This function should also check |
5967 | the response. */ | |
c906108c | 5968 | |
6b8edb51 PA |
5969 | void |
5970 | remote_target::remote_vcont_probe () | |
c906108c | 5971 | { |
6b8edb51 | 5972 | remote_state *rs = get_remote_state (); |
2e9f7625 | 5973 | char *buf; |
6d820c5c | 5974 | |
8d64371b | 5975 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 5976 | putpkt (rs->buf); |
8d64371b TT |
5977 | getpkt (&rs->buf, 0); |
5978 | buf = rs->buf.data (); | |
c906108c | 5979 | |
506fb367 | 5980 | /* Make sure that the features we assume are supported. */ |
61012eef | 5981 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5982 | { |
5983 | char *p = &buf[5]; | |
750ce8d1 | 5984 | int support_c, support_C; |
506fb367 | 5985 | |
750ce8d1 YQ |
5986 | rs->supports_vCont.s = 0; |
5987 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5988 | support_c = 0; |
5989 | support_C = 0; | |
d458bd84 | 5990 | rs->supports_vCont.t = 0; |
c1e36e3e | 5991 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5992 | while (p && *p == ';') |
5993 | { | |
5994 | p++; | |
5995 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5996 | rs->supports_vCont.s = 1; |
506fb367 | 5997 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5998 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5999 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6000 | support_c = 1; | |
6001 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6002 | support_C = 1; | |
74531fed | 6003 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6004 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6005 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6006 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6007 | |
6008 | p = strchr (p, ';'); | |
6009 | } | |
c906108c | 6010 | |
750ce8d1 YQ |
6011 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6012 | BUF will make packet_ok disable the packet. */ | |
6013 | if (!support_c || !support_C) | |
506fb367 DJ |
6014 | buf[0] = 0; |
6015 | } | |
c906108c | 6016 | |
8d64371b | 6017 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6018 | rs->supports_vCont_probed = true; |
506fb367 | 6019 | } |
c906108c | 6020 | |
0d8f58ca PA |
6021 | /* Helper function for building "vCont" resumptions. Write a |
6022 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6023 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6024 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6025 | resumed thread should be single-stepped and/or signalled. If PTID | |
6026 | equals minus_one_ptid, then all threads are resumed; if PTID | |
6027 | represents a process, then all threads of the process are resumed; | |
6028 | the thread to be stepped and/or signalled is given in the global | |
6029 | INFERIOR_PTID. */ | |
6030 | ||
6b8edb51 PA |
6031 | char * |
6032 | remote_target::append_resumption (char *p, char *endp, | |
6033 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6034 | { |
6035 | struct remote_state *rs = get_remote_state (); | |
6036 | ||
a493e3e2 | 6037 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6038 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6039 | else if (step |
6040 | /* GDB is willing to range step. */ | |
6041 | && use_range_stepping | |
6042 | /* Target supports range stepping. */ | |
6043 | && rs->supports_vCont.r | |
6044 | /* We don't currently support range stepping multiple | |
6045 | threads with a wildcard (though the protocol allows it, | |
6046 | so stubs shouldn't make an active effort to forbid | |
6047 | it). */ | |
0e998d96 | 6048 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6049 | { |
6050 | struct thread_info *tp; | |
6051 | ||
d7e15655 | 6052 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6053 | { |
6054 | /* If we don't know about the target thread's tid, then | |
6055 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6056 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6057 | } |
6058 | else | |
5b6d1e4f | 6059 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6060 | gdb_assert (tp != NULL); |
6061 | ||
6062 | if (tp->control.may_range_step) | |
6063 | { | |
6064 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6065 | ||
6066 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6067 | phex_nz (tp->control.step_range_start, | |
6068 | addr_size), | |
6069 | phex_nz (tp->control.step_range_end, | |
6070 | addr_size)); | |
6071 | } | |
6072 | else | |
6073 | p += xsnprintf (p, endp - p, ";s"); | |
6074 | } | |
0d8f58ca PA |
6075 | else if (step) |
6076 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6077 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6078 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6079 | else | |
6080 | p += xsnprintf (p, endp - p, ";c"); | |
6081 | ||
0e998d96 | 6082 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6083 | { |
6084 | ptid_t nptid; | |
6085 | ||
6086 | /* All (-1) threads of process. */ | |
e99b03dc | 6087 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6088 | |
6089 | p += xsnprintf (p, endp - p, ":"); | |
6090 | p = write_ptid (p, endp, nptid); | |
6091 | } | |
d7e15655 | 6092 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6093 | { |
6094 | p += xsnprintf (p, endp - p, ":"); | |
6095 | p = write_ptid (p, endp, ptid); | |
6096 | } | |
6097 | ||
6098 | return p; | |
6099 | } | |
6100 | ||
799a2abe PA |
6101 | /* Clear the thread's private info on resume. */ |
6102 | ||
6103 | static void | |
6104 | resume_clear_thread_private_info (struct thread_info *thread) | |
6105 | { | |
6106 | if (thread->priv != NULL) | |
6107 | { | |
7aabaf9d SM |
6108 | remote_thread_info *priv = get_remote_thread_info (thread); |
6109 | ||
6110 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6111 | priv->watch_data_address = 0; | |
799a2abe PA |
6112 | } |
6113 | } | |
6114 | ||
e5ef252a PA |
6115 | /* Append a vCont continue-with-signal action for threads that have a |
6116 | non-zero stop signal. */ | |
6117 | ||
6b8edb51 PA |
6118 | char * |
6119 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6120 | ptid_t ptid) | |
e5ef252a | 6121 | { |
5b6d1e4f | 6122 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6123 | if (inferior_ptid != thread->ptid |
70509625 | 6124 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6125 | { |
6126 | p = append_resumption (p, endp, thread->ptid, | |
6127 | 0, thread->suspend.stop_signal); | |
6128 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6129 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6130 | } |
6131 | ||
6132 | return p; | |
6133 | } | |
6134 | ||
7b68ffbb PA |
6135 | /* Set the target running, using the packets that use Hc |
6136 | (c/s/C/S). */ | |
6137 | ||
6b8edb51 PA |
6138 | void |
6139 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6140 | gdb_signal siggnal) | |
7b68ffbb PA |
6141 | { |
6142 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6143 | char *buf; |
6144 | ||
6145 | rs->last_sent_signal = siggnal; | |
6146 | rs->last_sent_step = step; | |
6147 | ||
6148 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6149 | thread. */ | |
d7e15655 | 6150 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6151 | set_continue_thread (any_thread_ptid); |
6152 | else | |
6153 | set_continue_thread (ptid); | |
6154 | ||
5b6d1e4f | 6155 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6156 | resume_clear_thread_private_info (thread); |
6157 | ||
8d64371b | 6158 | buf = rs->buf.data (); |
6b8edb51 | 6159 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6160 | { |
6161 | /* We don't pass signals to the target in reverse exec mode. */ | |
6162 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6163 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6164 | siggnal); | |
6165 | ||
6166 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6167 | error (_("Remote reverse-step not supported.")); | |
6168 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6169 | error (_("Remote reverse-continue not supported.")); | |
6170 | ||
6171 | strcpy (buf, step ? "bs" : "bc"); | |
6172 | } | |
6173 | else if (siggnal != GDB_SIGNAL_0) | |
6174 | { | |
6175 | buf[0] = step ? 'S' : 'C'; | |
6176 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6177 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6178 | buf[3] = '\0'; | |
6179 | } | |
6180 | else | |
6181 | strcpy (buf, step ? "s" : "c"); | |
6182 | ||
6183 | putpkt (buf); | |
6184 | } | |
6185 | ||
506fb367 DJ |
6186 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6187 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6188 | resumed thread should be single-stepped and/or signalled. If PTID |
6189 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6190 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6191 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6192 | |
7b68ffbb PA |
6193 | This function issues a strict subset of all possible vCont commands |
6194 | at the moment. */ | |
44eaed12 | 6195 | |
6b8edb51 PA |
6196 | int |
6197 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6198 | enum gdb_signal siggnal) | |
506fb367 DJ |
6199 | { |
6200 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6201 | char *p; |
6202 | char *endp; | |
44eaed12 | 6203 | |
7b68ffbb | 6204 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6205 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6206 | return 0; |
6207 | ||
4082afcc | 6208 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6209 | remote_vcont_probe (); |
44eaed12 | 6210 | |
4082afcc | 6211 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6212 | return 0; |
44eaed12 | 6213 | |
8d64371b TT |
6214 | p = rs->buf.data (); |
6215 | endp = p + get_remote_packet_size (); | |
82f73884 | 6216 | |
506fb367 DJ |
6217 | /* If we could generate a wider range of packets, we'd have to worry |
6218 | about overflowing BUF. Should there be a generic | |
6219 | "multi-part-packet" packet? */ | |
6220 | ||
0d8f58ca PA |
6221 | p += xsnprintf (p, endp - p, "vCont"); |
6222 | ||
d7e15655 | 6223 | if (ptid == magic_null_ptid) |
c906108c | 6224 | { |
79d7f229 PA |
6225 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6226 | so we don't have any TID numbers the inferior will | |
6227 | understand. Make sure to only send forms that do not specify | |
6228 | a TID. */ | |
a9cbf802 | 6229 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6230 | } |
d7e15655 | 6231 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6232 | { |
0d8f58ca PA |
6233 | /* Resume all threads (of all processes, or of a single |
6234 | process), with preference for INFERIOR_PTID. This assumes | |
6235 | inferior_ptid belongs to the set of all threads we are about | |
6236 | to resume. */ | |
a493e3e2 | 6237 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6238 | { |
0d8f58ca PA |
6239 | /* Step inferior_ptid, with or without signal. */ |
6240 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6241 | } |
0d8f58ca | 6242 | |
e5ef252a PA |
6243 | /* Also pass down any pending signaled resumption for other |
6244 | threads not the current. */ | |
6245 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6246 | ||
0d8f58ca | 6247 | /* And continue others without a signal. */ |
a493e3e2 | 6248 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6249 | } |
6250 | else | |
506fb367 DJ |
6251 | { |
6252 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6253 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6254 | } |
c906108c | 6255 | |
8d64371b | 6256 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6257 | putpkt (rs->buf); |
506fb367 | 6258 | |
6efcd9a8 | 6259 | if (target_is_non_stop_p ()) |
74531fed PA |
6260 | { |
6261 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6262 | reply will be reported asynchronously by means of a `%Stop' | |
6263 | notification. */ | |
8d64371b TT |
6264 | getpkt (&rs->buf, 0); |
6265 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6266 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6267 | rs->buf.data ()); | |
74531fed PA |
6268 | } |
6269 | ||
506fb367 | 6270 | return 1; |
c906108c | 6271 | } |
43ff13b4 | 6272 | |
506fb367 DJ |
6273 | /* Tell the remote machine to resume. */ |
6274 | ||
f6ac5f3d PA |
6275 | void |
6276 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6277 | { |
d01949b6 | 6278 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6279 | |
85ad3aaf PA |
6280 | /* When connected in non-stop mode, the core resumes threads |
6281 | individually. Resuming remote threads directly in target_resume | |
6282 | would thus result in sending one packet per thread. Instead, to | |
6283 | minimize roundtrip latency, here we just store the resume | |
6284 | request; the actual remote resumption will be done in | |
6285 | target_commit_resume / remote_commit_resume, where we'll be able | |
6286 | to do vCont action coalescing. */ | |
f6ac5f3d | 6287 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6288 | { |
7aabaf9d | 6289 | remote_thread_info *remote_thr; |
85ad3aaf | 6290 | |
d7e15655 | 6291 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
5b6d1e4f | 6292 | remote_thr = get_remote_thread_info (this, inferior_ptid); |
85ad3aaf | 6293 | else |
5b6d1e4f | 6294 | remote_thr = get_remote_thread_info (this, ptid); |
7aabaf9d | 6295 | |
85ad3aaf PA |
6296 | remote_thr->last_resume_step = step; |
6297 | remote_thr->last_resume_sig = siggnal; | |
6298 | return; | |
6299 | } | |
6300 | ||
722247f1 YQ |
6301 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6302 | (explained in remote-notif.c:handle_notification) so | |
6303 | remote_notif_process is not called. We need find a place where | |
6304 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6305 | before resuming inferior, because inferior was stopped and no RSP | |
6306 | traffic at that moment. */ | |
6efcd9a8 | 6307 | if (!target_is_non_stop_p ()) |
5965e028 | 6308 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6309 | |
f6ac5f3d | 6310 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6311 | |
7b68ffbb PA |
6312 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6313 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6314 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6315 | |
2acceee2 | 6316 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6317 | with the event loop. NOTE: this is the one place where all the |
6318 | execution commands end up. We could alternatively do this in each | |
23860348 | 6319 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6320 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6321 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6322 | NOT asynchronously. */ |
362646f5 | 6323 | if (target_can_async_p ()) |
6a3753b3 | 6324 | target_async (1); |
e24a49d8 PA |
6325 | |
6326 | /* We've just told the target to resume. The remote server will | |
6327 | wait for the inferior to stop, and then send a stop reply. In | |
6328 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6329 | because the stub wouldn't be ready to process it. This applies |
6330 | only to the base all-stop protocol, however. In non-stop (which | |
6331 | only supports vCont), the stub replies with an "OK", and is | |
6332 | immediate able to process further serial input. */ | |
6efcd9a8 | 6333 | if (!target_is_non_stop_p ()) |
74531fed | 6334 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6335 | } |
85ad3aaf | 6336 | |
85ad3aaf PA |
6337 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6338 | ||
6339 | /* Private per-inferior info for target remote processes. */ | |
6340 | ||
089354bb | 6341 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6342 | { |
6343 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6344 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6345 | }; |
6346 | ||
089354bb SM |
6347 | /* Get the remote private inferior data associated to INF. */ |
6348 | ||
6349 | static remote_inferior * | |
6350 | get_remote_inferior (inferior *inf) | |
6351 | { | |
6352 | if (inf->priv == NULL) | |
6353 | inf->priv.reset (new remote_inferior); | |
6354 | ||
6355 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6356 | } | |
6357 | ||
f5db4863 | 6358 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6359 | outgoing packet buffer. This is used to send multiple vCont |
6360 | packets if we have more actions than would fit a single packet. */ | |
6361 | ||
f5db4863 | 6362 | class vcont_builder |
85ad3aaf | 6363 | { |
f5db4863 | 6364 | public: |
6b8edb51 PA |
6365 | explicit vcont_builder (remote_target *remote) |
6366 | : m_remote (remote) | |
f5db4863 PA |
6367 | { |
6368 | restart (); | |
6369 | } | |
6370 | ||
6371 | void flush (); | |
6372 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6373 | ||
6374 | private: | |
6375 | void restart (); | |
6376 | ||
6b8edb51 PA |
6377 | /* The remote target. */ |
6378 | remote_target *m_remote; | |
6379 | ||
85ad3aaf PA |
6380 | /* Pointer to the first action. P points here if no action has been |
6381 | appended yet. */ | |
f5db4863 | 6382 | char *m_first_action; |
85ad3aaf PA |
6383 | |
6384 | /* Where the next action will be appended. */ | |
f5db4863 | 6385 | char *m_p; |
85ad3aaf PA |
6386 | |
6387 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6388 | char *m_endp; |
85ad3aaf PA |
6389 | }; |
6390 | ||
6391 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6392 | ||
f5db4863 PA |
6393 | void |
6394 | vcont_builder::restart () | |
85ad3aaf | 6395 | { |
6b8edb51 | 6396 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6397 | |
8d64371b TT |
6398 | m_p = rs->buf.data (); |
6399 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6400 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6401 | m_first_action = m_p; | |
85ad3aaf PA |
6402 | } |
6403 | ||
6404 | /* If the vCont packet being built has any action, send it to the | |
6405 | remote end. */ | |
6406 | ||
f5db4863 PA |
6407 | void |
6408 | vcont_builder::flush () | |
85ad3aaf PA |
6409 | { |
6410 | struct remote_state *rs; | |
6411 | ||
f5db4863 | 6412 | if (m_p == m_first_action) |
85ad3aaf PA |
6413 | return; |
6414 | ||
6b8edb51 PA |
6415 | rs = m_remote->get_remote_state (); |
6416 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6417 | m_remote->getpkt (&rs->buf, 0); |
6418 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6419 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6420 | } |
6421 | ||
6422 | /* The largest action is range-stepping, with its two addresses. This | |
6423 | is more than sufficient. If a new, bigger action is created, it'll | |
6424 | quickly trigger a failed assertion in append_resumption (and we'll | |
6425 | just bump this). */ | |
6426 | #define MAX_ACTION_SIZE 200 | |
6427 | ||
6428 | /* Append a new vCont action in the outgoing packet being built. If | |
6429 | the action doesn't fit the packet along with previous actions, push | |
6430 | what we've got so far to the remote end and start over a new vCont | |
6431 | packet (with the new action). */ | |
6432 | ||
f5db4863 PA |
6433 | void |
6434 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6435 | { |
6436 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6437 | |
6b8edb51 PA |
6438 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6439 | ptid, step, siggnal); | |
85ad3aaf PA |
6440 | |
6441 | /* Check whether this new action would fit in the vCont packet along | |
6442 | with previous actions. If not, send what we've got so far and | |
6443 | start a new vCont packet. */ | |
f5db4863 PA |
6444 | size_t rsize = endp - buf; |
6445 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6446 | { |
f5db4863 PA |
6447 | flush (); |
6448 | restart (); | |
85ad3aaf PA |
6449 | |
6450 | /* Should now fit. */ | |
f5db4863 | 6451 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6452 | } |
6453 | ||
f5db4863 PA |
6454 | memcpy (m_p, buf, rsize); |
6455 | m_p += rsize; | |
6456 | *m_p = '\0'; | |
85ad3aaf PA |
6457 | } |
6458 | ||
6459 | /* to_commit_resume implementation. */ | |
6460 | ||
f6ac5f3d PA |
6461 | void |
6462 | remote_target::commit_resume () | |
85ad3aaf | 6463 | { |
85ad3aaf PA |
6464 | int any_process_wildcard; |
6465 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6466 | |
6467 | /* If connected in all-stop mode, we'd send the remote resume | |
6468 | request directly from remote_resume. Likewise if | |
6469 | reverse-debugging, as there are no defined vCont actions for | |
6470 | reverse execution. */ | |
f6ac5f3d | 6471 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6472 | return; |
6473 | ||
6474 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6475 | instead of resuming all threads of each process individually. | |
6476 | However, if any thread of a process must remain halted, we can't | |
6477 | send wildcard resumes and must send one action per thread. | |
6478 | ||
6479 | Care must be taken to not resume threads/processes the server | |
6480 | side already told us are stopped, but the core doesn't know about | |
6481 | yet, because the events are still in the vStopped notification | |
6482 | queue. For example: | |
6483 | ||
6484 | #1 => vCont s:p1.1;c | |
6485 | #2 <= OK | |
6486 | #3 <= %Stopped T05 p1.1 | |
6487 | #4 => vStopped | |
6488 | #5 <= T05 p1.2 | |
6489 | #6 => vStopped | |
6490 | #7 <= OK | |
6491 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6492 | #9 => vCont s:p1.1;c | |
6493 | ||
6494 | The last vCont above would resume thread p1.2 by mistake, because | |
6495 | the server has no idea that the event for p1.2 had not been | |
6496 | handled yet. | |
6497 | ||
6498 | The server side must similarly ignore resume actions for the | |
6499 | thread that has a pending %Stopped notification (and any other | |
6500 | threads with events pending), until GDB acks the notification | |
6501 | with vStopped. Otherwise, e.g., the following case is | |
6502 | mishandled: | |
6503 | ||
6504 | #1 => g (or any other packet) | |
6505 | #2 <= [registers] | |
6506 | #3 <= %Stopped T05 p1.2 | |
6507 | #4 => vCont s:p1.1;c | |
6508 | #5 <= OK | |
6509 | ||
6510 | Above, the server must not resume thread p1.2. GDB can't know | |
6511 | that p1.2 stopped until it acks the %Stopped notification, and | |
6512 | since from GDB's perspective all threads should be running, it | |
6513 | sends a "c" action. | |
6514 | ||
6515 | Finally, special care must also be given to handling fork/vfork | |
6516 | events. A (v)fork event actually tells us that two processes | |
6517 | stopped -- the parent and the child. Until we follow the fork, | |
6518 | we must not resume the child. Therefore, if we have a pending | |
6519 | fork follow, we must not send a global wildcard resume action | |
6520 | (vCont;c). We can still send process-wide wildcards though. */ | |
6521 | ||
6522 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6523 | may_global_wildcard_vcont = 1; | |
6524 | ||
6525 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6526 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6527 | { |
089354bb SM |
6528 | remote_inferior *priv = get_remote_inferior (inf); |
6529 | ||
6530 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6531 | } |
6532 | ||
6533 | /* Check for any pending events (not reported or processed yet) and | |
6534 | disable process and global wildcard resumes appropriately. */ | |
6535 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6536 | ||
5b6d1e4f | 6537 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf PA |
6538 | { |
6539 | /* If a thread of a process is not meant to be resumed, then we | |
6540 | can't wildcard that process. */ | |
6541 | if (!tp->executing) | |
6542 | { | |
089354bb | 6543 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6544 | |
6545 | /* And if we can't wildcard a process, we can't wildcard | |
6546 | everything either. */ | |
6547 | may_global_wildcard_vcont = 0; | |
6548 | continue; | |
6549 | } | |
6550 | ||
6551 | /* If a thread is the parent of an unfollowed fork, then we | |
6552 | can't do a global wildcard, as that would resume the fork | |
6553 | child. */ | |
6554 | if (is_pending_fork_parent_thread (tp)) | |
6555 | may_global_wildcard_vcont = 0; | |
6556 | } | |
6557 | ||
6558 | /* Now let's build the vCont packet(s). Actions must be appended | |
6559 | from narrower to wider scopes (thread -> process -> global). If | |
6560 | we end up with too many actions for a single packet vcont_builder | |
6561 | flushes the current vCont packet to the remote side and starts a | |
6562 | new one. */ | |
6b8edb51 | 6563 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6564 | |
6565 | /* Threads first. */ | |
5b6d1e4f | 6566 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6567 | { |
7aabaf9d | 6568 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6569 | |
6570 | if (!tp->executing || remote_thr->vcont_resumed) | |
6571 | continue; | |
6572 | ||
6573 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6574 | ||
6575 | if (!remote_thr->last_resume_step | |
6576 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6577 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6578 | { |
6579 | /* We'll send a wildcard resume instead. */ | |
6580 | remote_thr->vcont_resumed = 1; | |
6581 | continue; | |
6582 | } | |
6583 | ||
f5db4863 | 6584 | vcont_builder.push_action (tp->ptid, |
85ad3aaf PA |
6585 | remote_thr->last_resume_step, |
6586 | remote_thr->last_resume_sig); | |
6587 | remote_thr->vcont_resumed = 1; | |
6588 | } | |
6589 | ||
6590 | /* Now check whether we can send any process-wide wildcard. This is | |
6591 | to avoid sending a global wildcard in the case nothing is | |
6592 | supposed to be resumed. */ | |
6593 | any_process_wildcard = 0; | |
6594 | ||
5b6d1e4f | 6595 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6596 | { |
089354bb | 6597 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6598 | { |
6599 | any_process_wildcard = 1; | |
6600 | break; | |
6601 | } | |
6602 | } | |
6603 | ||
6604 | if (any_process_wildcard) | |
6605 | { | |
6606 | /* If all processes are wildcard-able, then send a single "c" | |
6607 | action, otherwise, send an "all (-1) threads of process" | |
6608 | continue action for each running process, if any. */ | |
6609 | if (may_global_wildcard_vcont) | |
6610 | { | |
f5db4863 PA |
6611 | vcont_builder.push_action (minus_one_ptid, |
6612 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6613 | } |
6614 | else | |
6615 | { | |
5b6d1e4f | 6616 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6617 | { |
089354bb | 6618 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6619 | { |
f2907e49 | 6620 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6621 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6622 | } |
6623 | } | |
6624 | } | |
6625 | } | |
6626 | ||
f5db4863 | 6627 | vcont_builder.flush (); |
85ad3aaf PA |
6628 | } |
6629 | ||
c906108c | 6630 | \f |
43ff13b4 | 6631 | |
74531fed PA |
6632 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6633 | thread, all threads of a remote process, or all threads of all | |
6634 | processes. */ | |
6635 | ||
6b8edb51 PA |
6636 | void |
6637 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6638 | { |
6639 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6640 | char *p = rs->buf.data (); |
6641 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6642 | |
5b6d1e4f PA |
6643 | /* FIXME: This supports_vCont_probed check is a workaround until |
6644 | packet_support is per-connection. */ | |
6645 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
6646 | || !rs->supports_vCont_probed) | |
6b8edb51 | 6647 | remote_vcont_probe (); |
74531fed | 6648 | |
d458bd84 | 6649 | if (!rs->supports_vCont.t) |
74531fed PA |
6650 | error (_("Remote server does not support stopping threads")); |
6651 | ||
d7e15655 | 6652 | if (ptid == minus_one_ptid |
0e998d96 | 6653 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6654 | p += xsnprintf (p, endp - p, "vCont;t"); |
6655 | else | |
6656 | { | |
6657 | ptid_t nptid; | |
6658 | ||
74531fed PA |
6659 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6660 | ||
0e998d96 | 6661 | if (ptid.is_pid ()) |
74531fed | 6662 | /* All (-1) threads of process. */ |
e99b03dc | 6663 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6664 | else |
6665 | { | |
6666 | /* Small optimization: if we already have a stop reply for | |
6667 | this thread, no use in telling the stub we want this | |
6668 | stopped. */ | |
6669 | if (peek_stop_reply (ptid)) | |
6670 | return; | |
6671 | ||
6672 | nptid = ptid; | |
6673 | } | |
6674 | ||
a9cbf802 | 6675 | write_ptid (p, endp, nptid); |
74531fed PA |
6676 | } |
6677 | ||
6678 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6679 | come in asynchronously by notification. */ | |
6680 | putpkt (rs->buf); | |
8d64371b TT |
6681 | getpkt (&rs->buf, 0); |
6682 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 6683 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 6684 | rs->buf.data ()); |
74531fed PA |
6685 | } |
6686 | ||
bfedc46a PA |
6687 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6688 | interrupt the remote target. It is undefined which thread of which | |
6689 | process reports the interrupt. */ | |
74531fed | 6690 | |
6b8edb51 PA |
6691 | void |
6692 | remote_target::remote_interrupt_as () | |
74531fed PA |
6693 | { |
6694 | struct remote_state *rs = get_remote_state (); | |
6695 | ||
3a29589a DJ |
6696 | rs->ctrlc_pending_p = 1; |
6697 | ||
74531fed PA |
6698 | /* If the inferior is stopped already, but the core didn't know |
6699 | about it yet, just ignore the request. The cached wait status | |
6700 | will be collected in remote_wait. */ | |
6701 | if (rs->cached_wait_status) | |
6702 | return; | |
6703 | ||
9a7071a8 JB |
6704 | /* Send interrupt_sequence to remote target. */ |
6705 | send_interrupt_sequence (); | |
74531fed PA |
6706 | } |
6707 | ||
de979965 PA |
6708 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6709 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6710 | reports the interrupt. Throws an error if the packet is not |
6711 | supported by the server. */ | |
de979965 | 6712 | |
6b8edb51 PA |
6713 | void |
6714 | remote_target::remote_interrupt_ns () | |
de979965 PA |
6715 | { |
6716 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6717 | char *p = rs->buf.data (); |
6718 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
6719 | |
6720 | xsnprintf (p, endp - p, "vCtrlC"); | |
6721 | ||
6722 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6723 | come in asynchronously by notification. */ | |
6724 | putpkt (rs->buf); | |
8d64371b | 6725 | getpkt (&rs->buf, 0); |
de979965 PA |
6726 | |
6727 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6728 | { | |
6729 | case PACKET_OK: | |
6730 | break; | |
6731 | case PACKET_UNKNOWN: | |
e42de8c7 | 6732 | error (_("No support for interrupting the remote target.")); |
de979965 | 6733 | case PACKET_ERROR: |
8d64371b | 6734 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 6735 | } |
de979965 PA |
6736 | } |
6737 | ||
bfedc46a | 6738 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6739 | |
f6ac5f3d PA |
6740 | void |
6741 | remote_target::stop (ptid_t ptid) | |
c906108c | 6742 | { |
7a292a7a | 6743 | if (remote_debug) |
0f71a2f6 | 6744 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6745 | |
6efcd9a8 | 6746 | if (target_is_non_stop_p ()) |
74531fed | 6747 | remote_stop_ns (ptid); |
c906108c | 6748 | else |
bfedc46a PA |
6749 | { |
6750 | /* We don't currently have a way to transparently pause the | |
6751 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6752 | remote_interrupt_as (); |
bfedc46a PA |
6753 | } |
6754 | } | |
6755 | ||
6756 | /* Implement the to_interrupt function for the remote targets. */ | |
6757 | ||
f6ac5f3d PA |
6758 | void |
6759 | remote_target::interrupt () | |
bfedc46a PA |
6760 | { |
6761 | if (remote_debug) | |
6762 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6763 | ||
e42de8c7 PA |
6764 | if (target_is_non_stop_p ()) |
6765 | remote_interrupt_ns (); | |
bfedc46a | 6766 | else |
e42de8c7 | 6767 | remote_interrupt_as (); |
c906108c SS |
6768 | } |
6769 | ||
93692b58 PA |
6770 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6771 | ||
f6ac5f3d PA |
6772 | void |
6773 | remote_target::pass_ctrlc () | |
93692b58 PA |
6774 | { |
6775 | struct remote_state *rs = get_remote_state (); | |
6776 | ||
6777 | if (remote_debug) | |
6778 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6779 | ||
6780 | /* If we're starting up, we're not fully synced yet. Quit | |
6781 | immediately. */ | |
6782 | if (rs->starting_up) | |
6783 | quit (); | |
6784 | /* If ^C has already been sent once, offer to disconnect. */ | |
6785 | else if (rs->ctrlc_pending_p) | |
6786 | interrupt_query (); | |
6787 | else | |
e671cd59 | 6788 | target_interrupt (); |
93692b58 PA |
6789 | } |
6790 | ||
c906108c SS |
6791 | /* Ask the user what to do when an interrupt is received. */ |
6792 | ||
6b8edb51 PA |
6793 | void |
6794 | remote_target::interrupt_query () | |
c906108c | 6795 | { |
abc56d60 | 6796 | struct remote_state *rs = get_remote_state (); |
c906108c | 6797 | |
abc56d60 | 6798 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6799 | { |
abc56d60 PA |
6800 | if (query (_("The target is not responding to interrupt requests.\n" |
6801 | "Stop debugging it? "))) | |
74531fed | 6802 | { |
5b6d1e4f | 6803 | remote_unpush_target (this); |
abc56d60 | 6804 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6805 | } |
6806 | } | |
abc56d60 PA |
6807 | else |
6808 | { | |
6809 | if (query (_("Interrupted while waiting for the program.\n" | |
6810 | "Give up waiting? "))) | |
6811 | quit (); | |
6812 | } | |
c906108c SS |
6813 | } |
6814 | ||
6426a772 JM |
6815 | /* Enable/disable target terminal ownership. Most targets can use |
6816 | terminal groups to control terminal ownership. Remote targets are | |
6817 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6818 | is required. */ |
6426a772 | 6819 | |
f6ac5f3d PA |
6820 | void |
6821 | remote_target::terminal_inferior () | |
6426a772 | 6822 | { |
6426a772 JM |
6823 | /* NOTE: At this point we could also register our selves as the |
6824 | recipient of all input. Any characters typed could then be | |
23860348 | 6825 | passed on down to the target. */ |
6426a772 JM |
6826 | } |
6827 | ||
f6ac5f3d PA |
6828 | void |
6829 | remote_target::terminal_ours () | |
6426a772 | 6830 | { |
6426a772 JM |
6831 | } |
6832 | ||
176a6961 | 6833 | static void |
05be00a8 | 6834 | remote_console_output (const char *msg) |
c906108c | 6835 | { |
05be00a8 | 6836 | const char *p; |
c906108c | 6837 | |
c5aa993b | 6838 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6839 | { |
6840 | char tb[2]; | |
6841 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6842 | |
c906108c SS |
6843 | tb[0] = c; |
6844 | tb[1] = 0; | |
43ff13b4 | 6845 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6846 | } |
00db5b94 PA |
6847 | gdb_flush (gdb_stdtarg); |
6848 | } | |
74531fed | 6849 | |
32603266 | 6850 | struct stop_reply : public notif_event |
74531fed | 6851 | { |
32603266 | 6852 | ~stop_reply (); |
74531fed | 6853 | |
722247f1 | 6854 | /* The identifier of the thread about this event */ |
74531fed PA |
6855 | ptid_t ptid; |
6856 | ||
340e3c99 | 6857 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6858 | connection, represented by a remote_state object, is closed, |
6859 | all the associated stop_reply events should be released. */ | |
6860 | struct remote_state *rs; | |
6861 | ||
74531fed PA |
6862 | struct target_waitstatus ws; |
6863 | ||
5cd63fda PA |
6864 | /* The architecture associated with the expedited registers. */ |
6865 | gdbarch *arch; | |
6866 | ||
15148d6a PA |
6867 | /* Expedited registers. This makes remote debugging a bit more |
6868 | efficient for those targets that provide critical registers as | |
6869 | part of their normal status mechanism (as another roundtrip to | |
6870 | fetch them is avoided). */ | |
32603266 | 6871 | std::vector<cached_reg_t> regcache; |
74531fed | 6872 | |
f7e6eed5 PA |
6873 | enum target_stop_reason stop_reason; |
6874 | ||
74531fed PA |
6875 | CORE_ADDR watch_data_address; |
6876 | ||
dc146f7c | 6877 | int core; |
32603266 | 6878 | }; |
c906108c | 6879 | |
221e1a37 PA |
6880 | /* Return the length of the stop reply queue. */ |
6881 | ||
6b8edb51 PA |
6882 | int |
6883 | remote_target::stop_reply_queue_length () | |
221e1a37 | 6884 | { |
6b8edb51 | 6885 | remote_state *rs = get_remote_state (); |
953edf2b | 6886 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
6887 | } |
6888 | ||
cb8c24b6 | 6889 | static void |
6b8edb51 | 6890 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 6891 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6892 | struct notif_event *event) |
6893 | { | |
6b8edb51 | 6894 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
6895 | } |
6896 | ||
6897 | static void | |
6b8edb51 | 6898 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 6899 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6900 | struct notif_event *event) |
6901 | { | |
6902 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6903 | ||
6904 | /* acknowledge */ | |
6b8edb51 | 6905 | putpkt (remote, self->ack_command); |
722247f1 YQ |
6906 | |
6907 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6b8edb51 | 6908 | { |
722247f1 YQ |
6909 | /* We got an unknown stop reply. */ |
6910 | error (_("Unknown stop reply")); | |
6b8edb51 | 6911 | } |
722247f1 | 6912 | |
6b8edb51 | 6913 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
6914 | } |
6915 | ||
6916 | static int | |
6b8edb51 PA |
6917 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
6918 | struct notif_client *self) | |
722247f1 YQ |
6919 | { |
6920 | /* We can't get pending events in remote_notif_process for | |
6921 | notification stop, and we have to do this in remote_wait_ns | |
6922 | instead. If we fetch all queued events from stub, remote stub | |
6923 | may exit and we have no chance to process them back in | |
6924 | remote_wait_ns. */ | |
6b8edb51 PA |
6925 | remote_state *rs = remote->get_remote_state (); |
6926 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
6927 | return 0; |
6928 | } | |
6929 | ||
32603266 | 6930 | stop_reply::~stop_reply () |
722247f1 | 6931 | { |
32603266 TT |
6932 | for (cached_reg_t ® : regcache) |
6933 | xfree (reg.data); | |
722247f1 YQ |
6934 | } |
6935 | ||
32603266 TT |
6936 | static notif_event_up |
6937 | remote_notif_stop_alloc_reply () | |
722247f1 | 6938 | { |
32603266 | 6939 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
6940 | } |
6941 | ||
6942 | /* A client of notification Stop. */ | |
6943 | ||
6944 | struct notif_client notif_client_stop = | |
6945 | { | |
6946 | "Stop", | |
6947 | "vStopped", | |
6948 | remote_notif_stop_parse, | |
6949 | remote_notif_stop_ack, | |
6950 | remote_notif_stop_can_get_pending_events, | |
6951 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6952 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6953 | }; |
6954 | ||
85ad3aaf | 6955 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6956 | the pid of the process that owns the threads we want to check, or |
6957 | -1 if we want to check all threads. */ | |
6958 | ||
6959 | static int | |
6960 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6961 | ptid_t thread_ptid) | |
6962 | { | |
6963 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6964 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6965 | { | |
e99b03dc | 6966 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
6967 | return 1; |
6968 | } | |
6969 | ||
6970 | return 0; | |
6971 | } | |
6972 | ||
85ad3aaf PA |
6973 | /* Return the thread's pending status used to determine whether the |
6974 | thread is a fork parent stopped at a fork event. */ | |
6975 | ||
6976 | static struct target_waitstatus * | |
6977 | thread_pending_fork_status (struct thread_info *thread) | |
6978 | { | |
6979 | if (thread->suspend.waitstatus_pending_p) | |
6980 | return &thread->suspend.waitstatus; | |
6981 | else | |
6982 | return &thread->pending_follow; | |
6983 | } | |
6984 | ||
6985 | /* Determine if THREAD is a pending fork parent thread. */ | |
6986 | ||
6987 | static int | |
6988 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6989 | { | |
6990 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6991 | int pid = -1; | |
6992 | ||
6993 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6994 | } | |
6995 | ||
cbb8991c DB |
6996 | /* If CONTEXT contains any fork child threads that have not been |
6997 | reported yet, remove them from the CONTEXT list. If such a | |
6998 | thread exists it is because we are stopped at a fork catchpoint | |
6999 | and have not yet called follow_fork, which will set up the | |
7000 | host-side data structures for the new process. */ | |
7001 | ||
6b8edb51 PA |
7002 | void |
7003 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7004 | { |
cbb8991c DB |
7005 | int pid = -1; |
7006 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
7007 | |
7008 | /* For any threads stopped at a fork event, remove the corresponding | |
7009 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7010 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7011 | { |
85ad3aaf | 7012 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
7013 | |
7014 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 7015 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
7016 | } |
7017 | ||
7018 | /* Check for any pending fork events (not reported or processed yet) | |
7019 | in process PID and remove those fork child threads from the | |
7020 | CONTEXT list as well. */ | |
7021 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7022 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7023 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
7024 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
7025 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
7026 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
7027 | } |
7028 | ||
7029 | /* Check whether any event pending in the vStopped queue would prevent | |
7030 | a global or process wildcard vCont action. Clear | |
7031 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
7032 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
7033 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
7034 | ||
6b8edb51 PA |
7035 | void |
7036 | remote_target::check_pending_events_prevent_wildcard_vcont | |
7037 | (int *may_global_wildcard) | |
85ad3aaf PA |
7038 | { |
7039 | struct notif_client *notif = ¬if_client_stop; | |
7040 | ||
7041 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7042 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7043 | { | |
7044 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7045 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7046 | continue; | |
85ad3aaf | 7047 | |
953edf2b TT |
7048 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7049 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
7050 | *may_global_wildcard = 0; | |
722247f1 | 7051 | |
5b6d1e4f | 7052 | struct inferior *inf = find_inferior_ptid (this, event->ptid); |
722247f1 | 7053 | |
953edf2b TT |
7054 | /* This may be the first time we heard about this process. |
7055 | Regardless, we must not do a global wildcard resume, otherwise | |
7056 | we'd resume this process too. */ | |
7057 | *may_global_wildcard = 0; | |
7058 | if (inf != NULL) | |
7059 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
722247f1 | 7060 | } |
722247f1 YQ |
7061 | } |
7062 | ||
f48ff2a7 | 7063 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7064 | |
6b8edb51 PA |
7065 | void |
7066 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7067 | { |
f48ff2a7 YQ |
7068 | struct stop_reply *reply; |
7069 | struct remote_state *rs = get_remote_state (); | |
7070 | struct remote_notif_state *rns = rs->notif_state; | |
7071 | ||
7072 | /* This function can be notified when an inferior exists. When the | |
7073 | target is not remote, the notification state is NULL. */ | |
7074 | if (rs->remote_desc == NULL) | |
7075 | return; | |
7076 | ||
7077 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7078 | |
74531fed | 7079 | /* Discard the in-flight notification. */ |
e99b03dc | 7080 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7081 | { |
32603266 | 7082 | delete reply; |
f48ff2a7 | 7083 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 7084 | } |
c906108c | 7085 | |
74531fed PA |
7086 | /* Discard the stop replies we have already pulled with |
7087 | vStopped. */ | |
953edf2b TT |
7088 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7089 | rs->stop_reply_queue.end (), | |
7090 | [=] (const stop_reply_up &event) | |
7091 | { | |
7092 | return event->ptid.pid () == inf->pid; | |
7093 | }); | |
7094 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7095 | } |
7096 | ||
7097 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7098 | |
6b8edb51 PA |
7099 | void |
7100 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7101 | { |
6b8edb51 | 7102 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7103 | |
f48ff2a7 YQ |
7104 | /* Discard the stop replies we have already pulled with |
7105 | vStopped. */ | |
953edf2b TT |
7106 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7107 | rs->stop_reply_queue.end (), | |
7108 | [=] (const stop_reply_up &event) | |
7109 | { | |
7110 | return event->rs == rs; | |
7111 | }); | |
7112 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7113 | } |
43ff13b4 | 7114 | |
722247f1 YQ |
7115 | /* Remove the first reply in 'stop_reply_queue' which matches |
7116 | PTID. */ | |
2e9f7625 | 7117 | |
6b8edb51 PA |
7118 | struct stop_reply * |
7119 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7120 | { |
953edf2b | 7121 | remote_state *rs = get_remote_state (); |
722247f1 | 7122 | |
953edf2b TT |
7123 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7124 | rs->stop_reply_queue.end (), | |
7125 | [=] (const stop_reply_up &event) | |
7126 | { | |
7127 | return event->ptid.matches (ptid); | |
7128 | }); | |
7129 | struct stop_reply *result; | |
7130 | if (iter == rs->stop_reply_queue.end ()) | |
7131 | result = nullptr; | |
7132 | else | |
7133 | { | |
7134 | result = iter->release (); | |
7135 | rs->stop_reply_queue.erase (iter); | |
7136 | } | |
722247f1 | 7137 | |
722247f1 YQ |
7138 | if (notif_debug) |
7139 | fprintf_unfiltered (gdb_stdlog, | |
7140 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7141 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7142 | |
953edf2b | 7143 | return result; |
74531fed | 7144 | } |
75c99385 | 7145 | |
74531fed PA |
7146 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7147 | remove it from the queue, and return it. Returns NULL if none is | |
7148 | found. If there are still queued events left to process, tell the | |
7149 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7150 | |
6b8edb51 PA |
7151 | struct stop_reply * |
7152 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7153 | { |
953edf2b | 7154 | remote_state *rs = get_remote_state (); |
722247f1 | 7155 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7156 | |
953edf2b | 7157 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7158 | { |
6b8edb51 PA |
7159 | /* There's still at least an event left. */ |
7160 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7161 | } | |
74531fed | 7162 | |
722247f1 | 7163 | return r; |
74531fed PA |
7164 | } |
7165 | ||
7166 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7167 | know that we now have at least one queued event left to pass to the | |
7168 | core side, tell the event loop to get back to target_wait soon. */ | |
7169 | ||
6b8edb51 PA |
7170 | void |
7171 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7172 | { |
6b8edb51 | 7173 | remote_state *rs = get_remote_state (); |
953edf2b | 7174 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7175 | |
722247f1 YQ |
7176 | if (notif_debug) |
7177 | fprintf_unfiltered (gdb_stdlog, | |
7178 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7179 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7180 | int (rs->stop_reply_queue.size ())); |
74531fed | 7181 | |
6b8edb51 | 7182 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7183 | } |
7184 | ||
7185 | /* Returns true if we have a stop reply for PTID. */ | |
7186 | ||
6b8edb51 PA |
7187 | int |
7188 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7189 | { |
6b8edb51 | 7190 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7191 | for (auto &event : rs->stop_reply_queue) |
7192 | if (ptid == event->ptid | |
7193 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7194 | return 1; | |
7195 | return 0; | |
74531fed PA |
7196 | } |
7197 | ||
26d56a93 SL |
7198 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7199 | starting with P and ending with PEND matches PREFIX. */ | |
7200 | ||
7201 | static int | |
7202 | strprefix (const char *p, const char *pend, const char *prefix) | |
7203 | { | |
7204 | for ( ; p < pend; p++, prefix++) | |
7205 | if (*p != *prefix) | |
7206 | return 0; | |
7207 | return *prefix == '\0'; | |
7208 | } | |
7209 | ||
74531fed PA |
7210 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7211 | result is stored in EVENT, or throws an error. */ | |
7212 | ||
6b8edb51 | 7213 | void |
bb277751 | 7214 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7215 | { |
5cd63fda | 7216 | remote_arch_state *rsa = NULL; |
74531fed | 7217 | ULONGEST addr; |
256642e8 | 7218 | const char *p; |
94585166 | 7219 | int skipregs = 0; |
74531fed PA |
7220 | |
7221 | event->ptid = null_ptid; | |
bcc75809 | 7222 | event->rs = get_remote_state (); |
74531fed PA |
7223 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7224 | event->ws.value.integer = 0; | |
f7e6eed5 | 7225 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7226 | event->regcache.clear (); |
dc146f7c | 7227 | event->core = -1; |
74531fed PA |
7228 | |
7229 | switch (buf[0]) | |
7230 | { | |
7231 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7232 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7233 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7234 | ss = signal number | |
7235 | n... = register number | |
7236 | r... = register contents | |
7237 | */ | |
7238 | ||
7239 | p = &buf[3]; /* after Txx */ | |
7240 | while (*p) | |
7241 | { | |
256642e8 | 7242 | const char *p1; |
cea39f65 | 7243 | int fieldsize; |
43ff13b4 | 7244 | |
1f10ba14 PA |
7245 | p1 = strchr (p, ':'); |
7246 | if (p1 == NULL) | |
7247 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7248 | Packet: '%s'\n"), | |
7249 | p, buf); | |
7250 | if (p == p1) | |
7251 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7252 | Packet: '%s'\n"), | |
7253 | p, buf); | |
3c3bea1c | 7254 | |
1f10ba14 PA |
7255 | /* Some "registers" are actually extended stop information. |
7256 | Note if you're adding a new entry here: GDB 7.9 and | |
7257 | earlier assume that all register "numbers" that start | |
7258 | with an hex digit are real register numbers. Make sure | |
7259 | the server only sends such a packet if it knows the | |
7260 | client understands it. */ | |
c8e38a49 | 7261 | |
26d56a93 | 7262 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7263 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7264 | else if (strprefix (p, p1, "syscall_entry")) |
7265 | { | |
7266 | ULONGEST sysno; | |
7267 | ||
7268 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7269 | p = unpack_varlen_hex (++p1, &sysno); | |
7270 | event->ws.value.syscall_number = (int) sysno; | |
7271 | } | |
7272 | else if (strprefix (p, p1, "syscall_return")) | |
7273 | { | |
7274 | ULONGEST sysno; | |
7275 | ||
7276 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7277 | p = unpack_varlen_hex (++p1, &sysno); | |
7278 | event->ws.value.syscall_number = (int) sysno; | |
7279 | } | |
26d56a93 SL |
7280 | else if (strprefix (p, p1, "watch") |
7281 | || strprefix (p, p1, "rwatch") | |
7282 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7283 | { |
f7e6eed5 | 7284 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7285 | p = unpack_varlen_hex (++p1, &addr); |
7286 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7287 | } |
26d56a93 | 7288 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7289 | { |
7290 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7291 | ||
7292 | /* Make sure the stub doesn't forget to indicate support | |
7293 | with qSupported. */ | |
7294 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7295 | error (_("Unexpected swbreak stop reason")); | |
7296 | ||
7297 | /* The value part is documented as "must be empty", | |
7298 | though we ignore it, in case we ever decide to make | |
7299 | use of it in a backward compatible way. */ | |
8424cc97 | 7300 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7301 | } |
26d56a93 | 7302 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7303 | { |
7304 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7305 | ||
7306 | /* Make sure the stub doesn't forget to indicate support | |
7307 | with qSupported. */ | |
7308 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7309 | error (_("Unexpected hwbreak stop reason")); | |
7310 | ||
7311 | /* See above. */ | |
8424cc97 | 7312 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7313 | } |
26d56a93 | 7314 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7315 | { |
1f10ba14 | 7316 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7317 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7318 | } |
26d56a93 | 7319 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7320 | { |
7321 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7322 | /* p1 will indicate "begin" or "end", but it makes | |
7323 | no difference for now, so ignore it. */ | |
8424cc97 | 7324 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7325 | } |
26d56a93 | 7326 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7327 | { |
7328 | ULONGEST c; | |
a744cf53 | 7329 | |
1f10ba14 PA |
7330 | p = unpack_varlen_hex (++p1, &c); |
7331 | event->core = c; | |
cea39f65 | 7332 | } |
26d56a93 | 7333 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7334 | { |
7335 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7336 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7337 | } | |
26d56a93 | 7338 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7339 | { |
7340 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7341 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7342 | } | |
26d56a93 | 7343 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7344 | { |
7345 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7346 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7347 | } |
6ab24463 | 7348 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7349 | { |
7350 | ULONGEST ignored; | |
94585166 DB |
7351 | int pathlen; |
7352 | ||
7353 | /* Determine the length of the execd pathname. */ | |
7354 | p = unpack_varlen_hex (++p1, &ignored); | |
7355 | pathlen = (p - p1) / 2; | |
7356 | ||
7357 | /* Save the pathname for event reporting and for | |
7358 | the next run command. */ | |
c6321f19 TT |
7359 | gdb::unique_xmalloc_ptr<char[]> pathname |
7360 | ((char *) xmalloc (pathlen + 1)); | |
7361 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
94585166 DB |
7362 | pathname[pathlen] = '\0'; |
7363 | ||
7364 | /* This is freed during event handling. */ | |
c6321f19 | 7365 | event->ws.value.execd_pathname = pathname.release (); |
94585166 DB |
7366 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7367 | ||
7368 | /* Skip the registers included in this packet, since | |
7369 | they may be for an architecture different from the | |
7370 | one used by the original program. */ | |
7371 | skipregs = 1; | |
7372 | } | |
65706a29 PA |
7373 | else if (strprefix (p, p1, "create")) |
7374 | { | |
7375 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7376 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7377 | } |
cea39f65 MS |
7378 | else |
7379 | { | |
1f10ba14 | 7380 | ULONGEST pnum; |
256642e8 | 7381 | const char *p_temp; |
1f10ba14 | 7382 | |
94585166 DB |
7383 | if (skipregs) |
7384 | { | |
8424cc97 | 7385 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7386 | p++; |
7387 | continue; | |
7388 | } | |
7389 | ||
1f10ba14 PA |
7390 | /* Maybe a real ``P'' register number. */ |
7391 | p_temp = unpack_varlen_hex (p, &pnum); | |
7392 | /* If the first invalid character is the colon, we got a | |
7393 | register number. Otherwise, it's an unknown stop | |
7394 | reason. */ | |
7395 | if (p_temp == p1) | |
7396 | { | |
5cd63fda PA |
7397 | /* If we haven't parsed the event's thread yet, find |
7398 | it now, in order to find the architecture of the | |
7399 | reported expedited registers. */ | |
7400 | if (event->ptid == null_ptid) | |
7401 | { | |
7402 | const char *thr = strstr (p1 + 1, ";thread:"); | |
7403 | if (thr != NULL) | |
7404 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7405 | NULL); | |
7406 | else | |
3cada740 PA |
7407 | { |
7408 | /* Either the current thread hasn't changed, | |
7409 | or the inferior is not multi-threaded. | |
7410 | The event must be for the thread we last | |
7411 | set as (or learned as being) current. */ | |
7412 | event->ptid = event->rs->general_thread; | |
7413 | } | |
5cd63fda PA |
7414 | } |
7415 | ||
7416 | if (rsa == NULL) | |
7417 | { | |
5b6d1e4f PA |
7418 | inferior *inf |
7419 | = (event->ptid == null_ptid | |
7420 | ? NULL | |
7421 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7422 | /* If this is the first time we learn anything |
7423 | about this process, skip the registers | |
7424 | included in this packet, since we don't yet | |
7425 | know which architecture to use to parse them. | |
7426 | We'll determine the architecture later when | |
7427 | we process the stop reply and retrieve the | |
7428 | target description, via | |
7429 | remote_notice_new_inferior -> | |
7430 | post_create_inferior. */ | |
7431 | if (inf == NULL) | |
7432 | { | |
7433 | p = strchrnul (p1 + 1, ';'); | |
7434 | p++; | |
7435 | continue; | |
7436 | } | |
7437 | ||
7438 | event->arch = inf->gdbarch; | |
9d6eea31 | 7439 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7440 | } |
7441 | ||
7442 | packet_reg *reg | |
7443 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7444 | cached_reg_t cached_reg; |
43ff13b4 | 7445 | |
1f10ba14 PA |
7446 | if (reg == NULL) |
7447 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7448 | Packet: '%s'\n"), |
1f10ba14 | 7449 | hex_string (pnum), p, buf); |
c8e38a49 | 7450 | |
1f10ba14 | 7451 | cached_reg.num = reg->regnum; |
d1dff226 | 7452 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7453 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7454 | |
1f10ba14 PA |
7455 | p = p1 + 1; |
7456 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7457 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7458 | p += 2 * fieldsize; |
5cd63fda | 7459 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7460 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7461 | |
32603266 | 7462 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7463 | } |
7464 | else | |
7465 | { | |
7466 | /* Not a number. Silently skip unknown optional | |
7467 | info. */ | |
8424cc97 | 7468 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7469 | } |
cea39f65 | 7470 | } |
c8e38a49 | 7471 | |
cea39f65 MS |
7472 | if (*p != ';') |
7473 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7474 | buf, p); | |
7475 | ++p; | |
7476 | } | |
5b5596ff PA |
7477 | |
7478 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7479 | break; | |
7480 | ||
c8e38a49 PA |
7481 | /* fall through */ |
7482 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7483 | { |
7484 | int sig; | |
7485 | ||
7486 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7487 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7488 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7489 | event->ws.value.sig = (enum gdb_signal) sig; | |
7490 | else | |
7491 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7492 | } | |
c8e38a49 | 7493 | break; |
65706a29 PA |
7494 | case 'w': /* Thread exited. */ |
7495 | { | |
65706a29 PA |
7496 | ULONGEST value; |
7497 | ||
7498 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7499 | p = unpack_varlen_hex (&buf[1], &value); | |
7500 | event->ws.value.integer = value; | |
7501 | if (*p != ';') | |
7502 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7503 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7504 | break; |
7505 | } | |
c8e38a49 PA |
7506 | case 'W': /* Target exited. */ |
7507 | case 'X': | |
7508 | { | |
c8e38a49 | 7509 | ULONGEST value; |
82f73884 | 7510 | |
c8e38a49 PA |
7511 | /* GDB used to accept only 2 hex chars here. Stubs should |
7512 | only send more if they detect GDB supports multi-process | |
7513 | support. */ | |
7514 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7515 | |
c8e38a49 PA |
7516 | if (buf[0] == 'W') |
7517 | { | |
7518 | /* The remote process exited. */ | |
74531fed PA |
7519 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7520 | event->ws.value.integer = value; | |
c8e38a49 PA |
7521 | } |
7522 | else | |
7523 | { | |
7524 | /* The remote process exited with a signal. */ | |
74531fed | 7525 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7526 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7527 | event->ws.value.sig = (enum gdb_signal) value; | |
7528 | else | |
7529 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7530 | } |
82f73884 | 7531 | |
e7af6c70 TBA |
7532 | /* If no process is specified, return null_ptid, and let the |
7533 | caller figure out the right process to use. */ | |
7534 | int pid = 0; | |
c8e38a49 PA |
7535 | if (*p == '\0') |
7536 | ; | |
7537 | else if (*p == ';') | |
7538 | { | |
7539 | p++; | |
7540 | ||
0b24eb2d | 7541 | if (*p == '\0') |
82f73884 | 7542 | ; |
61012eef | 7543 | else if (startswith (p, "process:")) |
82f73884 | 7544 | { |
c8e38a49 | 7545 | ULONGEST upid; |
a744cf53 | 7546 | |
c8e38a49 PA |
7547 | p += sizeof ("process:") - 1; |
7548 | unpack_varlen_hex (p, &upid); | |
7549 | pid = upid; | |
82f73884 PA |
7550 | } |
7551 | else | |
7552 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7553 | } |
c8e38a49 PA |
7554 | else |
7555 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7556 | event->ptid = ptid_t (pid); |
74531fed PA |
7557 | } |
7558 | break; | |
f2faf941 PA |
7559 | case 'N': |
7560 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7561 | event->ptid = minus_one_ptid; | |
7562 | break; | |
74531fed PA |
7563 | } |
7564 | ||
d7e15655 | 7565 | if (target_is_non_stop_p () && event->ptid == null_ptid) |
74531fed PA |
7566 | error (_("No process or thread specified in stop reply: %s"), buf); |
7567 | } | |
7568 | ||
722247f1 YQ |
7569 | /* When the stub wants to tell GDB about a new notification reply, it |
7570 | sends a notification (%Stop, for example). Those can come it at | |
7571 | any time, hence, we have to make sure that any pending | |
7572 | putpkt/getpkt sequence we're making is finished, before querying | |
7573 | the stub for more events with the corresponding ack command | |
7574 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7575 | immediately upon receiving the notification, something like this | |
7576 | could happen: | |
74531fed PA |
7577 | |
7578 | 1.1) --> Hg 1 | |
7579 | 1.2) <-- OK | |
7580 | 1.3) --> g | |
7581 | 1.4) <-- %Stop | |
7582 | 1.5) --> vStopped | |
7583 | 1.6) <-- (registers reply to step #1.3) | |
7584 | ||
7585 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7586 | query. | |
7587 | ||
796cb314 | 7588 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7589 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7590 | doing whatever we were doing: | |
7591 | ||
7592 | 2.1) --> Hg 1 | |
7593 | 2.2) <-- OK | |
7594 | 2.3) --> g | |
7595 | 2.4) <-- %Stop | |
7596 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7597 | 2.5) <-- (registers reply to step #2.3) | |
7598 | ||
85102364 | 7599 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7600 | notices there's an event on the |
7601 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7602 | associated callback --- the function below. At this point, we're | |
7603 | always safe to start a vStopped sequence. : | |
7604 | ||
7605 | 2.6) --> vStopped | |
7606 | 2.7) <-- T05 thread:2 | |
7607 | 2.8) --> vStopped | |
7608 | 2.9) --> OK | |
7609 | */ | |
7610 | ||
722247f1 | 7611 | void |
6b8edb51 | 7612 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7613 | { |
7614 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7615 | |
f48ff2a7 | 7616 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7617 | { |
722247f1 YQ |
7618 | if (notif_debug) |
7619 | fprintf_unfiltered (gdb_stdlog, | |
7620 | "notif: process: '%s' ack pending event\n", | |
7621 | nc->name); | |
74531fed | 7622 | |
722247f1 | 7623 | /* acknowledge */ |
8d64371b TT |
7624 | nc->ack (this, nc, rs->buf.data (), |
7625 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7626 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7627 | |
7628 | while (1) | |
7629 | { | |
8d64371b TT |
7630 | getpkt (&rs->buf, 0); |
7631 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7632 | break; |
7633 | else | |
8d64371b | 7634 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7635 | } |
7636 | } | |
722247f1 YQ |
7637 | else |
7638 | { | |
7639 | if (notif_debug) | |
7640 | fprintf_unfiltered (gdb_stdlog, | |
7641 | "notif: process: '%s' no pending reply\n", | |
7642 | nc->name); | |
7643 | } | |
74531fed PA |
7644 | } |
7645 | ||
6b8edb51 PA |
7646 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7647 | avoid having to export the whole remote_target class. */ | |
7648 | ||
7649 | void | |
7650 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7651 | { | |
7652 | remote->remote_notif_get_pending_events (nc); | |
7653 | } | |
7654 | ||
74531fed PA |
7655 | /* Called when it is decided that STOP_REPLY holds the info of the |
7656 | event that is to be returned to the core. This function always | |
7657 | destroys STOP_REPLY. */ | |
7658 | ||
6b8edb51 PA |
7659 | ptid_t |
7660 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
7661 | struct target_waitstatus *status) | |
74531fed PA |
7662 | { |
7663 | ptid_t ptid; | |
7664 | ||
7665 | *status = stop_reply->ws; | |
7666 | ptid = stop_reply->ptid; | |
7667 | ||
7668 | /* If no thread/process was reported by the stub, assume the current | |
7669 | inferior. */ | |
d7e15655 | 7670 | if (ptid == null_ptid) |
74531fed PA |
7671 | ptid = inferior_ptid; |
7672 | ||
5f3563ea | 7673 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7674 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7675 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7676 | { |
5f3563ea | 7677 | /* Expedited registers. */ |
32603266 | 7678 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 7679 | { |
217f1f79 | 7680 | struct regcache *regcache |
5b6d1e4f | 7681 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 7682 | |
32603266 TT |
7683 | for (cached_reg_t ® : stop_reply->regcache) |
7684 | { | |
7685 | regcache->raw_supply (reg.num, reg.data); | |
7686 | xfree (reg.data); | |
7687 | } | |
d1dff226 | 7688 | |
32603266 | 7689 | stop_reply->regcache.clear (); |
5f3563ea | 7690 | } |
74531fed | 7691 | |
1941c569 | 7692 | remote_notice_new_inferior (ptid, 0); |
5b6d1e4f | 7693 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
7694 | remote_thr->core = stop_reply->core; |
7695 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7696 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7697 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7698 | } |
7699 | ||
32603266 | 7700 | delete stop_reply; |
74531fed PA |
7701 | return ptid; |
7702 | } | |
7703 | ||
7704 | /* The non-stop mode version of target_wait. */ | |
7705 | ||
6b8edb51 PA |
7706 | ptid_t |
7707 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) | |
74531fed PA |
7708 | { |
7709 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7710 | struct stop_reply *stop_reply; |
7711 | int ret; | |
fee9eda9 | 7712 | int is_notif = 0; |
74531fed PA |
7713 | |
7714 | /* If in non-stop mode, get out of getpkt even if a | |
7715 | notification is received. */ | |
7716 | ||
8d64371b | 7717 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
7718 | while (1) |
7719 | { | |
fee9eda9 | 7720 | if (ret != -1 && !is_notif) |
74531fed PA |
7721 | switch (rs->buf[0]) |
7722 | { | |
7723 | case 'E': /* Error of some sort. */ | |
7724 | /* We're out of sync with the target now. Did it continue | |
7725 | or not? We can't tell which thread it was in non-stop, | |
7726 | so just ignore this. */ | |
8d64371b | 7727 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
7728 | break; |
7729 | case 'O': /* Console output. */ | |
8d64371b | 7730 | remote_console_output (&rs->buf[1]); |
74531fed PA |
7731 | break; |
7732 | default: | |
8d64371b | 7733 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
7734 | break; |
7735 | } | |
7736 | ||
7737 | /* Acknowledge a pending stop reply that may have arrived in the | |
7738 | mean time. */ | |
f48ff2a7 | 7739 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7740 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7741 | |
7742 | /* If indeed we noticed a stop reply, we're done. */ | |
7743 | stop_reply = queued_stop_reply (ptid); | |
7744 | if (stop_reply != NULL) | |
7745 | return process_stop_reply (stop_reply, status); | |
7746 | ||
47608cb1 | 7747 | /* Still no event. If we're just polling for an event, then |
74531fed | 7748 | return to the event loop. */ |
47608cb1 | 7749 | if (options & TARGET_WNOHANG) |
74531fed PA |
7750 | { |
7751 | status->kind = TARGET_WAITKIND_IGNORE; | |
7752 | return minus_one_ptid; | |
7753 | } | |
7754 | ||
47608cb1 | 7755 | /* Otherwise do a blocking wait. */ |
8d64371b | 7756 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
7757 | } |
7758 | } | |
7759 | ||
31ba933e PA |
7760 | /* Return the first resumed thread. */ |
7761 | ||
7762 | static ptid_t | |
5b6d1e4f | 7763 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 7764 | { |
5b6d1e4f | 7765 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
31ba933e PA |
7766 | if (tp->resumed) |
7767 | return tp->ptid; | |
7768 | return null_ptid; | |
7769 | } | |
7770 | ||
74531fed PA |
7771 | /* Wait until the remote machine stops, then return, storing status in |
7772 | STATUS just as `wait' would. */ | |
7773 | ||
6b8edb51 PA |
7774 | ptid_t |
7775 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, int options) | |
74531fed PA |
7776 | { |
7777 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7778 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7779 | char *buf; |
74531fed PA |
7780 | struct stop_reply *stop_reply; |
7781 | ||
47608cb1 PA |
7782 | again: |
7783 | ||
74531fed PA |
7784 | status->kind = TARGET_WAITKIND_IGNORE; |
7785 | status->value.integer = 0; | |
7786 | ||
7787 | stop_reply = queued_stop_reply (ptid); | |
7788 | if (stop_reply != NULL) | |
7789 | return process_stop_reply (stop_reply, status); | |
7790 | ||
7791 | if (rs->cached_wait_status) | |
7792 | /* Use the cached wait status, but only once. */ | |
7793 | rs->cached_wait_status = 0; | |
7794 | else | |
7795 | { | |
7796 | int ret; | |
722247f1 | 7797 | int is_notif; |
567420d1 | 7798 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 7799 | && rs->wait_forever_enabled_p); |
567420d1 PA |
7800 | |
7801 | if (!rs->waiting_for_stop_reply) | |
7802 | { | |
7803 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7804 | return minus_one_ptid; | |
7805 | } | |
74531fed | 7806 | |
74531fed PA |
7807 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7808 | _never_ wait for ever -> test on target_is_async_p(). | |
7809 | However, before we do that we need to ensure that the caller | |
7810 | knows how to take the target into/out of async mode. */ | |
8d64371b | 7811 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
7812 | |
7813 | /* GDB gets a notification. Return to core as this event is | |
7814 | not interesting. */ | |
7815 | if (ret != -1 && is_notif) | |
7816 | return minus_one_ptid; | |
567420d1 PA |
7817 | |
7818 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7819 | return minus_one_ptid; | |
74531fed PA |
7820 | } |
7821 | ||
8d64371b | 7822 | buf = rs->buf.data (); |
74531fed | 7823 | |
3a29589a DJ |
7824 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7825 | an 'F' or 'O' packet. */ | |
7826 | if (buf[0] != 'F' && buf[0] != 'O') | |
7827 | rs->ctrlc_pending_p = 0; | |
7828 | ||
74531fed PA |
7829 | switch (buf[0]) |
7830 | { | |
7831 | case 'E': /* Error of some sort. */ | |
7832 | /* We're out of sync with the target now. Did it continue or | |
7833 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7834 | rs->waiting_for_stop_reply = 0; |
7835 | ||
74531fed PA |
7836 | warning (_("Remote failure reply: %s"), buf); |
7837 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7838 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7839 | break; |
7840 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7841 | /* GDB may access the inferior memory while handling the File-I/O |
7842 | request, but we don't want GDB accessing memory while waiting | |
7843 | for a stop reply. See the comments in putpkt_binary. Set | |
7844 | waiting_for_stop_reply to 0 temporarily. */ | |
7845 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 7846 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 7847 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
7848 | /* GDB handled the File-I/O request, and the target is running |
7849 | again. Keep waiting for events. */ | |
7850 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7851 | break; |
f2faf941 | 7852 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7853 | { |
29090fb6 LM |
7854 | /* There is a stop reply to handle. */ |
7855 | rs->waiting_for_stop_reply = 0; | |
7856 | ||
7857 | stop_reply | |
6b8edb51 PA |
7858 | = (struct stop_reply *) remote_notif_parse (this, |
7859 | ¬if_client_stop, | |
8d64371b | 7860 | rs->buf.data ()); |
74531fed | 7861 | |
74531fed | 7862 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7863 | break; |
7864 | } | |
7865 | case 'O': /* Console output. */ | |
7866 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7867 | break; |
7868 | case '\0': | |
b73be471 | 7869 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7870 | { |
7871 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7872 | remote system doesn't support it. */ | |
223ffa71 | 7873 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7874 | printf_filtered |
7875 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7876 | gdb_signal_to_name (rs->last_sent_signal)); |
7877 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7878 | target_terminal::inferior (); |
c8e38a49 | 7879 | |
f5c4fcd9 TT |
7880 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7881 | putpkt (buf); | |
c8e38a49 | 7882 | break; |
43ff13b4 | 7883 | } |
86a73007 | 7884 | /* fallthrough */ |
c8e38a49 PA |
7885 | default: |
7886 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7887 | break; |
43ff13b4 | 7888 | } |
c8e38a49 | 7889 | |
f2faf941 PA |
7890 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7891 | return minus_one_ptid; | |
7892 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7893 | { |
7894 | /* Nothing interesting happened. If we're doing a non-blocking | |
7895 | poll, we're done. Otherwise, go back to waiting. */ | |
7896 | if (options & TARGET_WNOHANG) | |
7897 | return minus_one_ptid; | |
7898 | else | |
7899 | goto again; | |
7900 | } | |
74531fed PA |
7901 | else if (status->kind != TARGET_WAITKIND_EXITED |
7902 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 7903 | { |
d7e15655 | 7904 | if (event_ptid != null_ptid) |
47f8a51d | 7905 | record_currthread (rs, event_ptid); |
82f73884 | 7906 | else |
5b6d1e4f | 7907 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 7908 | } |
74531fed | 7909 | else |
e7af6c70 TBA |
7910 | { |
7911 | /* A process exit. Invalidate our notion of current thread. */ | |
7912 | record_currthread (rs, minus_one_ptid); | |
7913 | /* It's possible that the packet did not include a pid. */ | |
7914 | if (event_ptid == null_ptid) | |
5b6d1e4f | 7915 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
7916 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
7917 | if (event_ptid == null_ptid) | |
7918 | event_ptid = magic_null_ptid; | |
7919 | } | |
79d7f229 | 7920 | |
82f73884 | 7921 | return event_ptid; |
43ff13b4 JM |
7922 | } |
7923 | ||
74531fed PA |
7924 | /* Wait until the remote machine stops, then return, storing status in |
7925 | STATUS just as `wait' would. */ | |
7926 | ||
f6ac5f3d PA |
7927 | ptid_t |
7928 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, int options) | |
c8e38a49 PA |
7929 | { |
7930 | ptid_t event_ptid; | |
7931 | ||
6efcd9a8 | 7932 | if (target_is_non_stop_p ()) |
6b8edb51 | 7933 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 7934 | else |
6b8edb51 | 7935 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 7936 | |
d9d41e78 | 7937 | if (target_is_async_p ()) |
c8e38a49 | 7938 | { |
6b8edb51 PA |
7939 | remote_state *rs = get_remote_state (); |
7940 | ||
74531fed PA |
7941 | /* If there are are events left in the queue tell the event loop |
7942 | to return here. */ | |
953edf2b | 7943 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7944 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 7945 | } |
c8e38a49 PA |
7946 | |
7947 | return event_ptid; | |
7948 | } | |
7949 | ||
74ca34ce | 7950 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7951 | |
6b8edb51 PA |
7952 | int |
7953 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
7954 | packet_reg *reg) | |
b96ec7ac | 7955 | { |
ac7936df | 7956 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7957 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7958 | char *buf, *p; |
9890e433 | 7959 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7960 | int i; |
7961 | ||
4082afcc | 7962 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7963 | return 0; |
7964 | ||
7965 | if (reg->pnum == -1) | |
7966 | return 0; | |
7967 | ||
8d64371b | 7968 | p = rs->buf.data (); |
fcad0fa4 | 7969 | *p++ = 'p'; |
74ca34ce | 7970 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7971 | *p++ = '\0'; |
1f4437a4 | 7972 | putpkt (rs->buf); |
8d64371b | 7973 | getpkt (&rs->buf, 0); |
3f9a994c | 7974 | |
8d64371b | 7975 | buf = rs->buf.data (); |
2e9f7625 | 7976 | |
8d64371b | 7977 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
7978 | { |
7979 | case PACKET_OK: | |
7980 | break; | |
7981 | case PACKET_UNKNOWN: | |
7982 | return 0; | |
7983 | case PACKET_ERROR: | |
27a9c0bf | 7984 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7985 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7986 | reg->regnum), |
7987 | buf); | |
74ca34ce | 7988 | } |
3f9a994c JB |
7989 | |
7990 | /* If this register is unfetchable, tell the regcache. */ | |
7991 | if (buf[0] == 'x') | |
8480adf2 | 7992 | { |
73e1c03f | 7993 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 7994 | return 1; |
b96ec7ac | 7995 | } |
b96ec7ac | 7996 | |
3f9a994c JB |
7997 | /* Otherwise, parse and supply the value. */ |
7998 | p = buf; | |
7999 | i = 0; | |
8000 | while (p[0] != 0) | |
8001 | { | |
8002 | if (p[1] == 0) | |
74ca34ce | 8003 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8004 | |
8005 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8006 | p += 2; | |
8007 | } | |
73e1c03f | 8008 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8009 | return 1; |
b96ec7ac AC |
8010 | } |
8011 | ||
74ca34ce DJ |
8012 | /* Fetch the registers included in the target's 'g' packet. */ |
8013 | ||
6b8edb51 PA |
8014 | int |
8015 | remote_target::send_g_packet () | |
c906108c | 8016 | { |
d01949b6 | 8017 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8018 | int buf_len; |
c906108c | 8019 | |
8d64371b | 8020 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8021 | putpkt (rs->buf); |
8d64371b | 8022 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8023 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8024 | error (_("Could not read registers; remote failure reply '%s'"), | |
8d64371b | 8025 | rs->buf.data ()); |
c906108c | 8026 | |
29709017 DJ |
8027 | /* We can get out of synch in various cases. If the first character |
8028 | in the buffer is not a hex character, assume that has happened | |
8029 | and try to fetch another packet to read. */ | |
8030 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8031 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8032 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8033 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8034 | { | |
8035 | if (remote_debug) | |
8036 | fprintf_unfiltered (gdb_stdlog, | |
8037 | "Bad register packet; fetching a new packet\n"); | |
8d64371b | 8038 | getpkt (&rs->buf, 0); |
29709017 DJ |
8039 | } |
8040 | ||
8d64371b | 8041 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8042 | |
8043 | /* Sanity check the received packet. */ | |
8044 | if (buf_len % 2 != 0) | |
8d64371b | 8045 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8046 | |
8047 | return buf_len / 2; | |
8048 | } | |
8049 | ||
6b8edb51 PA |
8050 | void |
8051 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8052 | { |
ac7936df | 8053 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8054 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8055 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8056 | int i, buf_len; |
8057 | char *p; | |
8058 | char *regs; | |
8059 | ||
8d64371b | 8060 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8061 | |
8062 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8063 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8064 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8065 | "bytes): %s"), |
8066 | rsa->sizeof_g_packet, buf_len / 2, | |
8067 | rs->buf.data ()); | |
74ca34ce DJ |
8068 | |
8069 | /* Save the size of the packet sent to us by the target. It is used | |
8070 | as a heuristic when determining the max size of packets that the | |
8071 | target can safely receive. */ | |
8072 | if (rsa->actual_register_packet_size == 0) | |
8073 | rsa->actual_register_packet_size = buf_len; | |
8074 | ||
8075 | /* If this is smaller than we guessed the 'g' packet would be, | |
8076 | update our records. A 'g' reply that doesn't include a register's | |
8077 | value implies either that the register is not available, or that | |
8078 | the 'p' packet must be used. */ | |
8079 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8080 | { |
9dc193c3 | 8081 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8082 | |
4a22f64d | 8083 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8084 | { |
9dc193c3 LF |
8085 | long offset = rsa->regs[i].offset; |
8086 | long reg_size = register_size (gdbarch, i); | |
8087 | ||
74ca34ce DJ |
8088 | if (rsa->regs[i].pnum == -1) |
8089 | continue; | |
8090 | ||
9dc193c3 | 8091 | if (offset >= sizeof_g_packet) |
74ca34ce | 8092 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8093 | else if (offset + reg_size > sizeof_g_packet) |
8094 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8095 | else |
74ca34ce | 8096 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8097 | } |
9dc193c3 LF |
8098 | |
8099 | /* Looks valid enough, we can assume this is the correct length | |
8100 | for a 'g' packet. It's important not to adjust | |
8101 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8102 | this "if" won't be run the next time the method is called | |
8103 | with a packet of the same size and one of the internal errors | |
8104 | below will trigger instead. */ | |
8105 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 8106 | } |
b323314b | 8107 | |
224c3ddb | 8108 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8109 | |
8110 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8111 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8112 | |
c906108c SS |
8113 | /* Reply describes registers byte by byte, each byte encoded as two |
8114 | hex characters. Suck them all up, then supply them to the | |
8115 | register cacheing/storage mechanism. */ | |
8116 | ||
8d64371b | 8117 | p = rs->buf.data (); |
ea9c271d | 8118 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8119 | { |
74ca34ce DJ |
8120 | if (p[0] == 0 || p[1] == 0) |
8121 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8122 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8123 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8124 | |
c906108c | 8125 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8126 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8127 | else |
8128 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8129 | p += 2; | |
8130 | } | |
8131 | ||
a744cf53 MS |
8132 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8133 | { | |
8134 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8135 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8136 | |
8137 | if (r->in_g_packet) | |
8138 | { | |
8d64371b | 8139 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8140 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8141 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8142 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8143 | else if (rs->buf[r->offset * 2] == 'x') |
8144 | { | |
8d64371b | 8145 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8146 | /* The register isn't available, mark it as such (at |
8147 | the same time setting the value to zero). */ | |
73e1c03f | 8148 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8149 | } |
8150 | else | |
73e1c03f | 8151 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8152 | } |
8153 | } | |
c906108c SS |
8154 | } |
8155 | ||
6b8edb51 PA |
8156 | void |
8157 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8158 | { |
8159 | send_g_packet (); | |
56be3814 | 8160 | process_g_packet (regcache); |
29709017 DJ |
8161 | } |
8162 | ||
e6e4e701 PA |
8163 | /* Make the remote selected traceframe match GDB's selected |
8164 | traceframe. */ | |
8165 | ||
6b8edb51 PA |
8166 | void |
8167 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8168 | { |
8169 | int newnum; | |
262e1174 | 8170 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8171 | |
262e1174 | 8172 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8173 | return; |
8174 | ||
8175 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8176 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8177 | |
8178 | newnum = target_trace_find (tfind_number, | |
8179 | get_traceframe_number (), 0, 0, NULL); | |
8180 | ||
8181 | /* Should not happen. If it does, all bets are off. */ | |
8182 | if (newnum != get_traceframe_number ()) | |
8183 | warning (_("could not set remote traceframe")); | |
8184 | } | |
8185 | ||
f6ac5f3d PA |
8186 | void |
8187 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8188 | { |
ac7936df | 8189 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8190 | struct remote_state *rs = get_remote_state (); |
8191 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8192 | int i; |
8193 | ||
e6e4e701 | 8194 | set_remote_traceframe (); |
222312d3 | 8195 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8196 | |
8197 | if (regnum >= 0) | |
8198 | { | |
5cd63fda | 8199 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8200 | |
74ca34ce DJ |
8201 | gdb_assert (reg != NULL); |
8202 | ||
8203 | /* If this register might be in the 'g' packet, try that first - | |
8204 | we are likely to read more than one register. If this is the | |
8205 | first 'g' packet, we might be overly optimistic about its | |
8206 | contents, so fall back to 'p'. */ | |
8207 | if (reg->in_g_packet) | |
8208 | { | |
56be3814 | 8209 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8210 | if (reg->in_g_packet) |
8211 | return; | |
8212 | } | |
8213 | ||
56be3814 | 8214 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8215 | return; |
8216 | ||
8217 | /* This register is not available. */ | |
73e1c03f | 8218 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8219 | |
8220 | return; | |
8221 | } | |
8222 | ||
56be3814 | 8223 | fetch_registers_using_g (regcache); |
74ca34ce | 8224 | |
5cd63fda | 8225 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8226 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8227 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8228 | { |
8229 | /* This register is not available. */ | |
73e1c03f | 8230 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8231 | } |
8232 | } | |
8233 | ||
c906108c SS |
8234 | /* Prepare to store registers. Since we may send them all (using a |
8235 | 'G' request), we have to read out the ones we don't want to change | |
8236 | first. */ | |
8237 | ||
f6ac5f3d PA |
8238 | void |
8239 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8240 | { |
9d6eea31 PA |
8241 | struct remote_state *rs = get_remote_state (); |
8242 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8243 | int i; |
cf0e1e0d | 8244 | |
c906108c | 8245 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8246 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8247 | { |
8248 | case PACKET_DISABLE: | |
8249 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8250 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8251 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8252 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8253 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8254 | break; |
8255 | case PACKET_ENABLE: | |
8256 | break; | |
8257 | } | |
8258 | } | |
8259 | ||
ad10f812 | 8260 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8261 | packet was not recognized. */ |
5a2468f5 | 8262 | |
6b8edb51 PA |
8263 | int |
8264 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8265 | packet_reg *reg) | |
5a2468f5 | 8266 | { |
ac7936df | 8267 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8268 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8269 | /* Try storing a single register. */ |
8d64371b | 8270 | char *buf = rs->buf.data (); |
9890e433 | 8271 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8272 | char *p; |
5a2468f5 | 8273 | |
4082afcc | 8274 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8275 | return 0; |
8276 | ||
8277 | if (reg->pnum == -1) | |
8278 | return 0; | |
8279 | ||
ea9c271d | 8280 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8281 | p = buf + strlen (buf); |
34a79281 | 8282 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8283 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8284 | putpkt (rs->buf); |
8d64371b | 8285 | getpkt (&rs->buf, 0); |
5a2468f5 | 8286 | |
74ca34ce DJ |
8287 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8288 | { | |
8289 | case PACKET_OK: | |
8290 | return 1; | |
8291 | case PACKET_ERROR: | |
27a9c0bf | 8292 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8293 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8294 | case PACKET_UNKNOWN: |
8295 | return 0; | |
8296 | default: | |
8297 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8298 | } | |
c906108c SS |
8299 | } |
8300 | ||
23860348 MS |
8301 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8302 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8303 | |
6b8edb51 PA |
8304 | void |
8305 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8306 | { |
d01949b6 | 8307 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8308 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8309 | gdb_byte *regs; |
c906108c SS |
8310 | char *p; |
8311 | ||
193cb69f AC |
8312 | /* Extract all the registers in the regcache copying them into a |
8313 | local buffer. */ | |
8314 | { | |
b323314b | 8315 | int i; |
a744cf53 | 8316 | |
224c3ddb | 8317 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8318 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8319 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8320 | { |
ea9c271d | 8321 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8322 | |
b323314b | 8323 | if (r->in_g_packet) |
34a79281 | 8324 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8325 | } |
8326 | } | |
c906108c SS |
8327 | |
8328 | /* Command describes registers byte by byte, | |
8329 | each byte encoded as two hex characters. */ | |
8d64371b | 8330 | p = rs->buf.data (); |
193cb69f | 8331 | *p++ = 'G'; |
74ca34ce | 8332 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8333 | putpkt (rs->buf); |
8d64371b | 8334 | getpkt (&rs->buf, 0); |
1f4437a4 | 8335 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8336 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8337 | rs->buf.data ()); |
c906108c | 8338 | } |
74ca34ce DJ |
8339 | |
8340 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8341 | of the register cache buffer. FIXME: ignores errors. */ | |
8342 | ||
f6ac5f3d PA |
8343 | void |
8344 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8345 | { |
5cd63fda | 8346 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8347 | struct remote_state *rs = get_remote_state (); |
8348 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8349 | int i; |
8350 | ||
e6e4e701 | 8351 | set_remote_traceframe (); |
222312d3 | 8352 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8353 | |
8354 | if (regnum >= 0) | |
8355 | { | |
5cd63fda | 8356 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8357 | |
74ca34ce DJ |
8358 | gdb_assert (reg != NULL); |
8359 | ||
8360 | /* Always prefer to store registers using the 'P' packet if | |
8361 | possible; we often change only a small number of registers. | |
8362 | Sometimes we change a larger number; we'd need help from a | |
8363 | higher layer to know to use 'G'. */ | |
56be3814 | 8364 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8365 | return; |
8366 | ||
8367 | /* For now, don't complain if we have no way to write the | |
8368 | register. GDB loses track of unavailable registers too | |
8369 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8370 | any way to read the register, either... */ |
74ca34ce DJ |
8371 | if (!reg->in_g_packet) |
8372 | return; | |
8373 | ||
56be3814 | 8374 | store_registers_using_G (regcache); |
74ca34ce DJ |
8375 | return; |
8376 | } | |
8377 | ||
56be3814 | 8378 | store_registers_using_G (regcache); |
74ca34ce | 8379 | |
5cd63fda | 8380 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8381 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8382 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8383 | /* See above for why we do not issue an error here. */ |
8384 | continue; | |
8385 | } | |
c906108c SS |
8386 | \f |
8387 | ||
8388 | /* Return the number of hex digits in num. */ | |
8389 | ||
8390 | static int | |
fba45db2 | 8391 | hexnumlen (ULONGEST num) |
c906108c SS |
8392 | { |
8393 | int i; | |
8394 | ||
8395 | for (i = 0; num != 0; i++) | |
8396 | num >>= 4; | |
8397 | ||
325fac50 | 8398 | return std::max (i, 1); |
c906108c SS |
8399 | } |
8400 | ||
2df3850c | 8401 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8402 | |
8403 | static int | |
fba45db2 | 8404 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8405 | { |
c906108c | 8406 | int len = hexnumlen (num); |
a744cf53 | 8407 | |
2df3850c JM |
8408 | return hexnumnstr (buf, num, len); |
8409 | } | |
8410 | ||
c906108c | 8411 | |
2df3850c | 8412 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8413 | |
2df3850c | 8414 | static int |
fba45db2 | 8415 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8416 | { |
8417 | int i; | |
8418 | ||
8419 | buf[width] = '\0'; | |
8420 | ||
8421 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8422 | { |
c5aa993b | 8423 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8424 | num >>= 4; |
8425 | } | |
8426 | ||
2df3850c | 8427 | return width; |
c906108c SS |
8428 | } |
8429 | ||
23860348 | 8430 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8431 | |
8432 | static CORE_ADDR | |
fba45db2 | 8433 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8434 | { |
883b9c6c | 8435 | unsigned int address_size = remote_address_size; |
a744cf53 | 8436 | |
911c95a5 UW |
8437 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8438 | if (!address_size) | |
f5656ead | 8439 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8440 | |
8441 | if (address_size > 0 | |
8442 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8443 | { |
8444 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8445 | in a ULONGEST variable. */ |
c906108c | 8446 | ULONGEST mask = 1; |
a744cf53 | 8447 | |
911c95a5 | 8448 | mask = (mask << address_size) - 1; |
c906108c SS |
8449 | addr &= mask; |
8450 | } | |
8451 | return addr; | |
8452 | } | |
8453 | ||
8454 | /* Determine whether the remote target supports binary downloading. | |
8455 | This is accomplished by sending a no-op memory write of zero length | |
8456 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8457 | the whole packet, since many stubs strip the eighth bit and |
8458 | subsequently compute a wrong checksum, which causes real havoc with | |
8459 | remote_write_bytes. | |
7a292a7a | 8460 | |
96baa820 | 8461 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8462 | clean. In cases like this, the user should clear "remote |
23860348 | 8463 | X-packet". */ |
96baa820 | 8464 | |
6b8edb51 PA |
8465 | void |
8466 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8467 | { |
d01949b6 | 8468 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8469 | |
4082afcc | 8470 | switch (packet_support (PACKET_X)) |
c906108c | 8471 | { |
96baa820 JM |
8472 | case PACKET_DISABLE: |
8473 | break; | |
8474 | case PACKET_ENABLE: | |
8475 | break; | |
8476 | case PACKET_SUPPORT_UNKNOWN: | |
8477 | { | |
96baa820 | 8478 | char *p; |
802188a7 | 8479 | |
8d64371b | 8480 | p = rs->buf.data (); |
96baa820 JM |
8481 | *p++ = 'X'; |
8482 | p += hexnumstr (p, (ULONGEST) addr); | |
8483 | *p++ = ','; | |
8484 | p += hexnumstr (p, (ULONGEST) 0); | |
8485 | *p++ = ':'; | |
8486 | *p = '\0'; | |
802188a7 | 8487 | |
8d64371b TT |
8488 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8489 | getpkt (&rs->buf, 0); | |
c906108c | 8490 | |
2e9f7625 | 8491 | if (rs->buf[0] == '\0') |
96baa820 JM |
8492 | { |
8493 | if (remote_debug) | |
8494 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8495 | "binary downloading NOT " |
8496 | "supported by target\n"); | |
444abaca | 8497 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8498 | } |
8499 | else | |
8500 | { | |
8501 | if (remote_debug) | |
8502 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8503 | "binary downloading supported by target\n"); |
444abaca | 8504 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8505 | } |
8506 | break; | |
8507 | } | |
c906108c SS |
8508 | } |
8509 | } | |
8510 | ||
124e13d9 SM |
8511 | /* Helper function to resize the payload in order to try to get a good |
8512 | alignment. We try to write an amount of data such that the next write will | |
8513 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8514 | ||
8515 | static int | |
8516 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8517 | { | |
8518 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8519 | } | |
8520 | ||
c906108c SS |
8521 | /* Write memory data directly to the remote machine. |
8522 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8523 | HEADER is the starting part of the packet. |
c906108c SS |
8524 | MEMADDR is the address in the remote memory space. |
8525 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8526 | LEN_UNITS is the number of addressable units to write. |
8527 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8528 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8529 | should send data as binary ('X'), or hex-encoded ('M'). | |
8530 | ||
8531 | The function creates packet of the form | |
8532 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8533 | ||
124e13d9 | 8534 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8535 | |
8536 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8537 | are omitted. | |
8538 | ||
9b409511 | 8539 | Return the transferred status, error or OK (an |
124e13d9 SM |
8540 | 'enum target_xfer_status' value). Save the number of addressable units |
8541 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8542 | ||
8543 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8544 | exchange between gdb and the stub could look like (?? in place of the | |
8545 | checksum): | |
8546 | ||
8547 | -> $m1000,4#?? | |
8548 | <- aaaabbbbccccdddd | |
8549 | ||
8550 | -> $M1000,3:eeeeffffeeee#?? | |
8551 | <- OK | |
8552 | ||
8553 | -> $m1000,4#?? | |
8554 | <- eeeeffffeeeedddd */ | |
c906108c | 8555 | |
6b8edb51 PA |
8556 | target_xfer_status |
8557 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8558 | const gdb_byte *myaddr, | |
8559 | ULONGEST len_units, | |
8560 | int unit_size, | |
8561 | ULONGEST *xfered_len_units, | |
8562 | char packet_format, int use_length) | |
c906108c | 8563 | { |
6d820c5c | 8564 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8565 | char *p; |
a76d924d DJ |
8566 | char *plen = NULL; |
8567 | int plenlen = 0; | |
124e13d9 SM |
8568 | int todo_units; |
8569 | int units_written; | |
8570 | int payload_capacity_bytes; | |
8571 | int payload_length_bytes; | |
a76d924d DJ |
8572 | |
8573 | if (packet_format != 'X' && packet_format != 'M') | |
8574 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8575 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8576 | |
124e13d9 | 8577 | if (len_units == 0) |
9b409511 | 8578 | return TARGET_XFER_EOF; |
b2182ed2 | 8579 | |
124e13d9 | 8580 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8581 | |
6d820c5c DJ |
8582 | /* The packet buffer will be large enough for the payload; |
8583 | get_memory_packet_size ensures this. */ | |
a76d924d | 8584 | rs->buf[0] = '\0'; |
c906108c | 8585 | |
a257b5bb | 8586 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8587 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8588 | ||
124e13d9 | 8589 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8590 | if (!use_length) |
0df8b418 | 8591 | /* The comma won't be used. */ |
124e13d9 SM |
8592 | payload_capacity_bytes += 1; |
8593 | payload_capacity_bytes -= strlen (header); | |
8594 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8595 | |
a76d924d | 8596 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8597 | |
8d64371b TT |
8598 | strcat (rs->buf.data (), header); |
8599 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8600 | |
8601 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8602 | if (packet_format == 'X') | |
c906108c | 8603 | { |
23860348 | 8604 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8605 | todo_units = std::min (len_units, |
8606 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8607 | if (use_length) |
124e13d9 | 8608 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8609 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8610 | } |
8611 | else | |
8612 | { | |
124e13d9 | 8613 | /* Number of bytes that will fit. */ |
325fac50 PA |
8614 | todo_units |
8615 | = std::min (len_units, | |
8616 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8617 | if (use_length) |
124e13d9 | 8618 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8619 | todo_units = std::min (todo_units, |
8620 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8621 | } |
a76d924d | 8622 | |
124e13d9 | 8623 | if (todo_units <= 0) |
3de11b2e | 8624 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8625 | _("minimum packet size too small to write data")); |
802188a7 | 8626 | |
6765f3e5 DJ |
8627 | /* If we already need another packet, then try to align the end |
8628 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8629 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8630 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8631 | |
a257b5bb | 8632 | /* Append "<memaddr>". */ |
917317f4 JM |
8633 | memaddr = remote_address_masked (memaddr); |
8634 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8635 | |
a76d924d DJ |
8636 | if (use_length) |
8637 | { | |
8638 | /* Append ",". */ | |
8639 | *p++ = ','; | |
802188a7 | 8640 | |
124e13d9 SM |
8641 | /* Append the length and retain its location and size. It may need to be |
8642 | adjusted once the packet body has been created. */ | |
a76d924d | 8643 | plen = p; |
124e13d9 | 8644 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8645 | p += plenlen; |
8646 | } | |
a257b5bb AC |
8647 | |
8648 | /* Append ":". */ | |
917317f4 JM |
8649 | *p++ = ':'; |
8650 | *p = '\0'; | |
802188a7 | 8651 | |
a257b5bb | 8652 | /* Append the packet body. */ |
a76d924d | 8653 | if (packet_format == 'X') |
917317f4 | 8654 | { |
917317f4 JM |
8655 | /* Binary mode. Send target system values byte by byte, in |
8656 | increasing byte addresses. Only escape certain critical | |
8657 | characters. */ | |
124e13d9 SM |
8658 | payload_length_bytes = |
8659 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8660 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8661 | |
124e13d9 | 8662 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8663 | a second try to keep the end of the packet aligned. Don't do |
8664 | this if the packet is tiny. */ | |
124e13d9 | 8665 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8666 | { |
124e13d9 SM |
8667 | int new_todo_units; |
8668 | ||
8669 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8670 | ||
8671 | if (new_todo_units != units_written) | |
8672 | payload_length_bytes = | |
8673 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8674 | (gdb_byte *) p, &units_written, | |
8675 | payload_capacity_bytes); | |
6765f3e5 DJ |
8676 | } |
8677 | ||
124e13d9 SM |
8678 | p += payload_length_bytes; |
8679 | if (use_length && units_written < todo_units) | |
c906108c | 8680 | { |
802188a7 | 8681 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8682 | and we have actually sent fewer units than planned. |
917317f4 JM |
8683 | Fix-up the length field of the packet. Use the same |
8684 | number of characters as before. */ | |
124e13d9 SM |
8685 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8686 | plenlen); | |
917317f4 | 8687 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8688 | } |
a76d924d DJ |
8689 | } |
8690 | else | |
8691 | { | |
917317f4 JM |
8692 | /* Normal mode: Send target system values byte by byte, in |
8693 | increasing byte addresses. Each byte is encoded as a two hex | |
8694 | value. */ | |
124e13d9 SM |
8695 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8696 | units_written = todo_units; | |
c906108c | 8697 | } |
802188a7 | 8698 | |
8d64371b TT |
8699 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8700 | getpkt (&rs->buf, 0); | |
802188a7 | 8701 | |
2e9f7625 | 8702 | if (rs->buf[0] == 'E') |
00d84524 | 8703 | return TARGET_XFER_E_IO; |
802188a7 | 8704 | |
124e13d9 SM |
8705 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8706 | send fewer units than we'd planned. */ | |
8707 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8708 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8709 | } |
8710 | ||
a76d924d DJ |
8711 | /* Write memory data directly to the remote machine. |
8712 | This does not inform the data cache; the data cache uses this. | |
8713 | MEMADDR is the address in the remote memory space. | |
8714 | MYADDR is the address of the buffer in our space. | |
8715 | LEN is the number of bytes. | |
8716 | ||
9b409511 YQ |
8717 | Return the transferred status, error or OK (an |
8718 | 'enum target_xfer_status' value). Save the number of bytes | |
8719 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8720 | |
6b8edb51 PA |
8721 | target_xfer_status |
8722 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
8723 | ULONGEST len, int unit_size, | |
8724 | ULONGEST *xfered_len) | |
a76d924d | 8725 | { |
a121b7c1 | 8726 | const char *packet_format = NULL; |
a76d924d DJ |
8727 | |
8728 | /* Check whether the target supports binary download. */ | |
8729 | check_binary_download (memaddr); | |
8730 | ||
4082afcc | 8731 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8732 | { |
8733 | case PACKET_ENABLE: | |
8734 | packet_format = "X"; | |
8735 | break; | |
8736 | case PACKET_DISABLE: | |
8737 | packet_format = "M"; | |
8738 | break; | |
8739 | case PACKET_SUPPORT_UNKNOWN: | |
8740 | internal_error (__FILE__, __LINE__, | |
8741 | _("remote_write_bytes: bad internal state")); | |
8742 | default: | |
8743 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8744 | } | |
8745 | ||
8746 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8747 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8748 | packet_format[0], 1); |
a76d924d DJ |
8749 | } |
8750 | ||
9217e74e YQ |
8751 | /* Read memory data directly from the remote machine. |
8752 | This does not use the data cache; the data cache uses this. | |
8753 | MEMADDR is the address in the remote memory space. | |
8754 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8755 | LEN_UNITS is the number of addressable memory units to read.. |
8756 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8757 | |
8758 | Return the transferred status, error or OK (an | |
8759 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8760 | transferred in *XFERED_LEN_UNITS. |
8761 | ||
8762 | See the comment of remote_write_bytes_aux for an example of | |
8763 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 8764 | |
6b8edb51 PA |
8765 | target_xfer_status |
8766 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
8767 | ULONGEST len_units, | |
8768 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8769 | { |
8770 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8771 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8772 | char *p; |
124e13d9 SM |
8773 | int todo_units; |
8774 | int decoded_bytes; | |
9217e74e | 8775 | |
124e13d9 | 8776 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8777 | /* The packet buffer will be large enough for the payload; |
8778 | get_memory_packet_size ensures this. */ | |
8779 | ||
124e13d9 | 8780 | /* Number of units that will fit. */ |
325fac50 PA |
8781 | todo_units = std::min (len_units, |
8782 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8783 | |
8784 | /* Construct "m"<memaddr>","<len>". */ | |
8785 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 8786 | p = rs->buf.data (); |
9217e74e YQ |
8787 | *p++ = 'm'; |
8788 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8789 | *p++ = ','; | |
124e13d9 | 8790 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8791 | *p = '\0'; |
8792 | putpkt (rs->buf); | |
8d64371b | 8793 | getpkt (&rs->buf, 0); |
9217e74e YQ |
8794 | if (rs->buf[0] == 'E' |
8795 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8796 | && rs->buf[3] == '\0') | |
8797 | return TARGET_XFER_E_IO; | |
8798 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8799 | characters. */ | |
8d64371b | 8800 | p = rs->buf.data (); |
124e13d9 | 8801 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8802 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8803 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8804 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8805 | } |
8806 | ||
b55fbac4 YQ |
8807 | /* Using the set of read-only target sections of remote, read live |
8808 | read-only memory. | |
8acf9577 YQ |
8809 | |
8810 | For interface/parameters/return description see target.h, | |
8811 | to_xfer_partial. */ | |
8812 | ||
6b8edb51 PA |
8813 | target_xfer_status |
8814 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
8815 | ULONGEST memaddr, | |
8816 | ULONGEST len, | |
8817 | int unit_size, | |
8818 | ULONGEST *xfered_len) | |
8acf9577 YQ |
8819 | { |
8820 | struct target_section *secp; | |
8821 | struct target_section_table *table; | |
8822 | ||
6b8edb51 | 8823 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 8824 | if (secp != NULL |
fd361982 | 8825 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 YQ |
8826 | { |
8827 | struct target_section *p; | |
8828 | ULONGEST memend = memaddr + len; | |
8829 | ||
6b8edb51 | 8830 | table = target_get_section_table (this); |
8acf9577 YQ |
8831 | |
8832 | for (p = table->sections; p < table->sections_end; p++) | |
8833 | { | |
8834 | if (memaddr >= p->addr) | |
8835 | { | |
8836 | if (memend <= p->endaddr) | |
8837 | { | |
8838 | /* Entire transfer is within this section. */ | |
124e13d9 | 8839 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8840 | xfered_len); |
8acf9577 YQ |
8841 | } |
8842 | else if (memaddr >= p->endaddr) | |
8843 | { | |
8844 | /* This section ends before the transfer starts. */ | |
8845 | continue; | |
8846 | } | |
8847 | else | |
8848 | { | |
8849 | /* This section overlaps the transfer. Just do half. */ | |
8850 | len = p->endaddr - memaddr; | |
124e13d9 | 8851 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8852 | xfered_len); |
8acf9577 YQ |
8853 | } |
8854 | } | |
8855 | } | |
8856 | } | |
8857 | ||
8858 | return TARGET_XFER_EOF; | |
8859 | } | |
8860 | ||
9217e74e YQ |
8861 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8862 | first if the requested memory is unavailable in traceframe. | |
8863 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8864 | |
6b8edb51 PA |
8865 | target_xfer_status |
8866 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
8867 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
8868 | ULONGEST *xfered_len) | |
c906108c | 8869 | { |
6b6aa828 | 8870 | if (len == 0) |
96c4f946 | 8871 | return TARGET_XFER_EOF; |
b2182ed2 | 8872 | |
8acf9577 YQ |
8873 | if (get_traceframe_number () != -1) |
8874 | { | |
a79b1bc6 | 8875 | std::vector<mem_range> available; |
8acf9577 YQ |
8876 | |
8877 | /* If we fail to get the set of available memory, then the | |
8878 | target does not support querying traceframe info, and so we | |
8879 | attempt reading from the traceframe anyway (assuming the | |
8880 | target implements the old QTro packet then). */ | |
8881 | if (traceframe_available_memory (&available, memaddr, len)) | |
8882 | { | |
a79b1bc6 | 8883 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8884 | { |
8885 | enum target_xfer_status res; | |
8886 | ||
8887 | /* Don't read into the traceframe's available | |
8888 | memory. */ | |
a79b1bc6 | 8889 | if (!available.empty ()) |
8acf9577 YQ |
8890 | { |
8891 | LONGEST oldlen = len; | |
8892 | ||
a79b1bc6 | 8893 | len = available[0].start - memaddr; |
8acf9577 YQ |
8894 | gdb_assert (len <= oldlen); |
8895 | } | |
8896 | ||
8acf9577 | 8897 | /* This goes through the topmost target again. */ |
6b8edb51 | 8898 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 8899 | len, unit_size, xfered_len); |
8acf9577 YQ |
8900 | if (res == TARGET_XFER_OK) |
8901 | return TARGET_XFER_OK; | |
8902 | else | |
8903 | { | |
8904 | /* No use trying further, we know some memory starting | |
8905 | at MEMADDR isn't available. */ | |
8906 | *xfered_len = len; | |
92ffd475 PC |
8907 | return (*xfered_len != 0) ? |
8908 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8909 | } |
8910 | } | |
8911 | ||
8912 | /* Don't try to read more than how much is available, in | |
8913 | case the target implements the deprecated QTro packet to | |
8914 | cater for older GDBs (the target's knowledge of read-only | |
8915 | sections may be outdated by now). */ | |
a79b1bc6 | 8916 | len = available[0].length; |
8acf9577 YQ |
8917 | } |
8918 | } | |
8919 | ||
124e13d9 | 8920 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8921 | } |
74531fed | 8922 | |
c906108c | 8923 | \f |
c906108c | 8924 | |
a76d924d DJ |
8925 | /* Sends a packet with content determined by the printf format string |
8926 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8927 | whether the packet was a success, a failure, or unknown. */ | |
8928 | ||
6b8edb51 PA |
8929 | packet_result |
8930 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
8931 | { |
8932 | struct remote_state *rs = get_remote_state (); | |
8933 | int max_size = get_remote_packet_size (); | |
a76d924d | 8934 | va_list ap; |
a744cf53 | 8935 | |
a76d924d DJ |
8936 | va_start (ap, format); |
8937 | ||
8938 | rs->buf[0] = '\0'; | |
8d64371b | 8939 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
8940 | |
8941 | va_end (ap); | |
8942 | ||
8943 | if (size >= max_size) | |
9b20d036 | 8944 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8945 | |
8946 | if (putpkt (rs->buf) < 0) | |
8947 | error (_("Communication problem with target.")); | |
8948 | ||
8949 | rs->buf[0] = '\0'; | |
8d64371b | 8950 | getpkt (&rs->buf, 0); |
a76d924d DJ |
8951 | |
8952 | return packet_check_result (rs->buf); | |
8953 | } | |
8954 | ||
a76d924d DJ |
8955 | /* Flash writing can take quite some time. We'll set |
8956 | effectively infinite timeout for flash operations. | |
8957 | In future, we'll need to decide on a better approach. */ | |
8958 | static const int remote_flash_timeout = 1000; | |
8959 | ||
f6ac5f3d PA |
8960 | void |
8961 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 8962 | { |
f5656ead | 8963 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8964 | enum packet_result ret; |
2ec845e7 TT |
8965 | scoped_restore restore_timeout |
8966 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8967 | |
8968 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8969 | phex (address, addr_size), |
a76d924d DJ |
8970 | phex (length, 4)); |
8971 | switch (ret) | |
8972 | { | |
8973 | case PACKET_UNKNOWN: | |
8974 | error (_("Remote target does not support flash erase")); | |
8975 | case PACKET_ERROR: | |
8976 | error (_("Error erasing flash with vFlashErase packet")); | |
8977 | default: | |
8978 | break; | |
8979 | } | |
a76d924d DJ |
8980 | } |
8981 | ||
6b8edb51 PA |
8982 | target_xfer_status |
8983 | remote_target::remote_flash_write (ULONGEST address, | |
8984 | ULONGEST length, ULONGEST *xfered_len, | |
8985 | const gdb_byte *data) | |
a76d924d | 8986 | { |
2ec845e7 TT |
8987 | scoped_restore restore_timeout |
8988 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8989 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8990 | xfered_len,'X', 0); | |
a76d924d DJ |
8991 | } |
8992 | ||
f6ac5f3d PA |
8993 | void |
8994 | remote_target::flash_done () | |
a76d924d | 8995 | { |
a76d924d | 8996 | int ret; |
a76d924d | 8997 | |
2ec845e7 TT |
8998 | scoped_restore restore_timeout |
8999 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9000 | ||
a76d924d | 9001 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9002 | |
9003 | switch (ret) | |
9004 | { | |
9005 | case PACKET_UNKNOWN: | |
9006 | error (_("Remote target does not support vFlashDone")); | |
9007 | case PACKET_ERROR: | |
9008 | error (_("Error finishing flash operation")); | |
9009 | default: | |
9010 | break; | |
9011 | } | |
9012 | } | |
9013 | ||
f6ac5f3d PA |
9014 | void |
9015 | remote_target::files_info () | |
c906108c SS |
9016 | { |
9017 | puts_filtered ("Debugging a target over a serial line.\n"); | |
9018 | } | |
9019 | \f | |
9020 | /* Stuff for dealing with the packets which are part of this protocol. | |
9021 | See comment at top of file for details. */ | |
9022 | ||
1927e618 PA |
9023 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9024 | error to higher layers. Called when a serial error is detected. | |
9025 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9026 | the system error message for errno at function entry and final dot |
9027 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9028 | |
9029 | static void | |
5b6d1e4f | 9030 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9031 | { |
d6cb50a2 | 9032 | int saved_errno = errno; |
1927e618 | 9033 | |
5b6d1e4f | 9034 | remote_unpush_target (target); |
d6cb50a2 JK |
9035 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9036 | safe_strerror (saved_errno)); | |
1927e618 PA |
9037 | } |
9038 | ||
048094ac PA |
9039 | /* Read a single character from the remote end. The current quit |
9040 | handler is overridden to avoid quitting in the middle of packet | |
9041 | sequence, as that would break communication with the remote server. | |
9042 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9043 | |
6b8edb51 PA |
9044 | int |
9045 | remote_target::readchar (int timeout) | |
c906108c SS |
9046 | { |
9047 | int ch; | |
5d93a237 | 9048 | struct remote_state *rs = get_remote_state (); |
048094ac | 9049 | |
2ec845e7 | 9050 | { |
6b8edb51 PA |
9051 | scoped_restore restore_quit_target |
9052 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9053 | scoped_restore restore_quit |
6b8edb51 | 9054 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9055 | |
2ec845e7 | 9056 | rs->got_ctrlc_during_io = 0; |
c906108c | 9057 | |
2ec845e7 | 9058 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9059 | |
2ec845e7 TT |
9060 | if (rs->got_ctrlc_during_io) |
9061 | set_quit_flag (); | |
9062 | } | |
048094ac | 9063 | |
2acceee2 | 9064 | if (ch >= 0) |
0876f84a | 9065 | return ch; |
2acceee2 JM |
9066 | |
9067 | switch ((enum serial_rc) ch) | |
c906108c SS |
9068 | { |
9069 | case SERIAL_EOF: | |
5b6d1e4f | 9070 | remote_unpush_target (this); |
598d3636 | 9071 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9072 | /* no return */ |
c906108c | 9073 | case SERIAL_ERROR: |
5b6d1e4f PA |
9074 | unpush_and_perror (this, _("Remote communication error. " |
9075 | "Target disconnected.")); | |
2acceee2 | 9076 | /* no return */ |
c906108c | 9077 | case SERIAL_TIMEOUT: |
2acceee2 | 9078 | break; |
c906108c | 9079 | } |
2acceee2 | 9080 | return ch; |
c906108c SS |
9081 | } |
9082 | ||
c33e31fd | 9083 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9084 | writing fails. The current quit handler is overridden to avoid |
9085 | quitting in the middle of packet sequence, as that would break | |
9086 | communication with the remote server. See | |
9087 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9088 | |
6b8edb51 PA |
9089 | void |
9090 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9091 | { |
5d93a237 | 9092 | struct remote_state *rs = get_remote_state (); |
048094ac | 9093 | |
6b8edb51 PA |
9094 | scoped_restore restore_quit_target |
9095 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9096 | scoped_restore restore_quit |
6b8edb51 | 9097 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9098 | |
9099 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9100 | |
9101 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9102 | { |
5b6d1e4f PA |
9103 | unpush_and_perror (this, _("Remote communication error. " |
9104 | "Target disconnected.")); | |
c33e31fd | 9105 | } |
048094ac PA |
9106 | |
9107 | if (rs->got_ctrlc_during_io) | |
9108 | set_quit_flag (); | |
c33e31fd PA |
9109 | } |
9110 | ||
b3ced9ba PA |
9111 | /* Return a string representing an escaped version of BUF, of len N. |
9112 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9113 | |
b3ced9ba | 9114 | static std::string |
6e5abd65 PA |
9115 | escape_buffer (const char *buf, int n) |
9116 | { | |
d7e74731 | 9117 | string_file stb; |
6e5abd65 | 9118 | |
d7e74731 PA |
9119 | stb.putstrn (buf, n, '\\'); |
9120 | return std::move (stb.string ()); | |
6e5abd65 PA |
9121 | } |
9122 | ||
c906108c SS |
9123 | /* Display a null-terminated packet on stdout, for debugging, using C |
9124 | string notation. */ | |
9125 | ||
9126 | static void | |
baa336ce | 9127 | print_packet (const char *buf) |
c906108c SS |
9128 | { |
9129 | puts_filtered ("\""); | |
43e526b9 | 9130 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9131 | puts_filtered ("\""); |
9132 | } | |
9133 | ||
9134 | int | |
6b8edb51 | 9135 | remote_target::putpkt (const char *buf) |
c906108c SS |
9136 | { |
9137 | return putpkt_binary (buf, strlen (buf)); | |
9138 | } | |
9139 | ||
6b8edb51 PA |
9140 | /* Wrapper around remote_target::putpkt to avoid exporting |
9141 | remote_target. */ | |
9142 | ||
9143 | int | |
9144 | putpkt (remote_target *remote, const char *buf) | |
9145 | { | |
9146 | return remote->putpkt (buf); | |
9147 | } | |
9148 | ||
c906108c | 9149 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9150 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9151 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9152 | and for a possible /0 if we are debugging (remote_debug) and want |
9153 | to print the sent packet as a string. */ | |
c906108c | 9154 | |
6b8edb51 PA |
9155 | int |
9156 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9157 | { |
2d717e4f | 9158 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9159 | int i; |
9160 | unsigned char csum = 0; | |
b80406ac TT |
9161 | gdb::def_vector<char> data (cnt + 6); |
9162 | char *buf2 = data.data (); | |
085dd6e6 | 9163 | |
c906108c SS |
9164 | int ch; |
9165 | int tcount = 0; | |
9166 | char *p; | |
9167 | ||
e24a49d8 PA |
9168 | /* Catch cases like trying to read memory or listing threads while |
9169 | we're waiting for a stop reply. The remote server wouldn't be | |
9170 | ready to handle this request, so we'd hang and timeout. We don't | |
9171 | have to worry about this in synchronous mode, because in that | |
9172 | case it's not possible to issue a command while the target is | |
74531fed PA |
9173 | running. This is not a problem in non-stop mode, because in that |
9174 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9175 | if (!target_is_non_stop_p () |
9176 | && target_is_async_p () | |
9177 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9178 | { |
9179 | error (_("Cannot execute this command while the target is running.\n" | |
9180 | "Use the \"interrupt\" command to stop the target\n" | |
9181 | "and then try again.")); | |
9182 | } | |
e24a49d8 | 9183 | |
2d717e4f DJ |
9184 | /* We're sending out a new packet. Make sure we don't look at a |
9185 | stale cached response. */ | |
9186 | rs->cached_wait_status = 0; | |
9187 | ||
c906108c SS |
9188 | /* Copy the packet into buffer BUF2, encapsulating it |
9189 | and giving it a checksum. */ | |
9190 | ||
c906108c SS |
9191 | p = buf2; |
9192 | *p++ = '$'; | |
9193 | ||
9194 | for (i = 0; i < cnt; i++) | |
9195 | { | |
9196 | csum += buf[i]; | |
9197 | *p++ = buf[i]; | |
9198 | } | |
9199 | *p++ = '#'; | |
9200 | *p++ = tohex ((csum >> 4) & 0xf); | |
9201 | *p++ = tohex (csum & 0xf); | |
9202 | ||
9203 | /* Send it over and over until we get a positive ack. */ | |
9204 | ||
9205 | while (1) | |
9206 | { | |
9207 | int started_error_output = 0; | |
9208 | ||
9209 | if (remote_debug) | |
9210 | { | |
9211 | *p = '\0'; | |
b3ced9ba | 9212 | |
6f8976bf | 9213 | int len = (int) (p - buf2); |
6cc8564b LM |
9214 | int max_chars; |
9215 | ||
9216 | if (remote_packet_max_chars < 0) | |
9217 | max_chars = len; | |
9218 | else | |
9219 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9220 | |
9221 | std::string str | |
6cc8564b | 9222 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf YQ |
9223 | |
9224 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9225 | ||
6cc8564b | 9226 | if (len > max_chars) |
567a3e54 | 9227 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", |
6cc8564b | 9228 | len - max_chars); |
6f8976bf YQ |
9229 | |
9230 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9231 | |
0f71a2f6 | 9232 | gdb_flush (gdb_stdlog); |
c906108c | 9233 | } |
c33e31fd | 9234 | remote_serial_write (buf2, p - buf2); |
c906108c | 9235 | |
a6f3e723 SL |
9236 | /* If this is a no acks version of the remote protocol, send the |
9237 | packet and move on. */ | |
9238 | if (rs->noack_mode) | |
9239 | break; | |
9240 | ||
74531fed PA |
9241 | /* Read until either a timeout occurs (-2) or '+' is read. |
9242 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9243 | while (1) |
9244 | { | |
9245 | ch = readchar (remote_timeout); | |
9246 | ||
c5aa993b | 9247 | if (remote_debug) |
c906108c SS |
9248 | { |
9249 | switch (ch) | |
9250 | { | |
9251 | case '+': | |
1216fa2c | 9252 | case '-': |
c906108c SS |
9253 | case SERIAL_TIMEOUT: |
9254 | case '$': | |
74531fed | 9255 | case '%': |
c906108c SS |
9256 | if (started_error_output) |
9257 | { | |
9258 | putchar_unfiltered ('\n'); | |
9259 | started_error_output = 0; | |
9260 | } | |
9261 | } | |
9262 | } | |
9263 | ||
9264 | switch (ch) | |
9265 | { | |
9266 | case '+': | |
9267 | if (remote_debug) | |
0f71a2f6 | 9268 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9269 | return 1; |
1216fa2c AC |
9270 | case '-': |
9271 | if (remote_debug) | |
9272 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9273 | /* FALLTHROUGH */ |
c906108c | 9274 | case SERIAL_TIMEOUT: |
c5aa993b | 9275 | tcount++; |
c906108c | 9276 | if (tcount > 3) |
b80406ac | 9277 | return 0; |
23860348 | 9278 | break; /* Retransmit buffer. */ |
c906108c SS |
9279 | case '$': |
9280 | { | |
40e3f985 | 9281 | if (remote_debug) |
2bc416ba | 9282 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9283 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9284 | /* It's probably an old response sent because an ACK |
9285 | was lost. Gobble up the packet and ack it so it | |
9286 | doesn't get retransmitted when we resend this | |
9287 | packet. */ | |
6d820c5c | 9288 | skip_frame (); |
c33e31fd | 9289 | remote_serial_write ("+", 1); |
23860348 | 9290 | continue; /* Now, go look for +. */ |
c906108c | 9291 | } |
74531fed PA |
9292 | |
9293 | case '%': | |
9294 | { | |
9295 | int val; | |
9296 | ||
9297 | /* If we got a notification, handle it, and go back to looking | |
9298 | for an ack. */ | |
9299 | /* We've found the start of a notification. Now | |
9300 | collect the data. */ | |
8d64371b | 9301 | val = read_frame (&rs->buf); |
74531fed PA |
9302 | if (val >= 0) |
9303 | { | |
9304 | if (remote_debug) | |
9305 | { | |
8d64371b | 9306 | std::string str = escape_buffer (rs->buf.data (), val); |
6e5abd65 | 9307 | |
6e5abd65 PA |
9308 | fprintf_unfiltered (gdb_stdlog, |
9309 | " Notification received: %s\n", | |
b3ced9ba | 9310 | str.c_str ()); |
74531fed | 9311 | } |
8d64371b | 9312 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9313 | /* We're in sync now, rewait for the ack. */ |
9314 | tcount = 0; | |
9315 | } | |
9316 | else | |
9317 | { | |
9318 | if (remote_debug) | |
9319 | { | |
9320 | if (!started_error_output) | |
9321 | { | |
9322 | started_error_output = 1; | |
9323 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9324 | } | |
9325 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8d64371b | 9326 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf.data ()); |
74531fed PA |
9327 | } |
9328 | } | |
9329 | continue; | |
9330 | } | |
9331 | /* fall-through */ | |
c906108c SS |
9332 | default: |
9333 | if (remote_debug) | |
9334 | { | |
9335 | if (!started_error_output) | |
9336 | { | |
9337 | started_error_output = 1; | |
0f71a2f6 | 9338 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9339 | } |
0f71a2f6 | 9340 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9341 | } |
9342 | continue; | |
9343 | } | |
23860348 | 9344 | break; /* Here to retransmit. */ |
c906108c SS |
9345 | } |
9346 | ||
9347 | #if 0 | |
9348 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
9349 | able to get out next time we call QUIT, without anything as |
9350 | violent as interrupt_query. If we want to provide a way out of | |
9351 | here without getting to the next QUIT, it should be based on | |
9352 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9353 | if (quit_flag) |
9354 | { | |
9355 | quit_flag = 0; | |
9356 | interrupt_query (); | |
9357 | } | |
9358 | #endif | |
9359 | } | |
a5c0808e | 9360 | |
a6f3e723 | 9361 | return 0; |
c906108c SS |
9362 | } |
9363 | ||
6d820c5c DJ |
9364 | /* Come here after finding the start of a frame when we expected an |
9365 | ack. Do our best to discard the rest of this packet. */ | |
9366 | ||
6b8edb51 PA |
9367 | void |
9368 | remote_target::skip_frame () | |
6d820c5c DJ |
9369 | { |
9370 | int c; | |
9371 | ||
9372 | while (1) | |
9373 | { | |
9374 | c = readchar (remote_timeout); | |
9375 | switch (c) | |
9376 | { | |
9377 | case SERIAL_TIMEOUT: | |
9378 | /* Nothing we can do. */ | |
9379 | return; | |
9380 | case '#': | |
9381 | /* Discard the two bytes of checksum and stop. */ | |
9382 | c = readchar (remote_timeout); | |
9383 | if (c >= 0) | |
9384 | c = readchar (remote_timeout); | |
9385 | ||
9386 | return; | |
9387 | case '*': /* Run length encoding. */ | |
9388 | /* Discard the repeat count. */ | |
9389 | c = readchar (remote_timeout); | |
9390 | if (c < 0) | |
9391 | return; | |
9392 | break; | |
9393 | default: | |
9394 | /* A regular character. */ | |
9395 | break; | |
9396 | } | |
9397 | } | |
9398 | } | |
9399 | ||
c906108c | 9400 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9401 | into *BUF, verifying the checksum, length, and handling run-length |
9402 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9403 | expand *BUF. |
c906108c | 9404 | |
c2d11a7d JM |
9405 | Returns -1 on error, number of characters in buffer (ignoring the |
9406 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9407 | SERIAL status indications). */ |
c2d11a7d | 9408 | |
6b8edb51 | 9409 | long |
8d64371b | 9410 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9411 | { |
9412 | unsigned char csum; | |
c2d11a7d | 9413 | long bc; |
c906108c | 9414 | int c; |
8d64371b | 9415 | char *buf = buf_p->data (); |
a6f3e723 | 9416 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9417 | |
9418 | csum = 0; | |
c2d11a7d | 9419 | bc = 0; |
c906108c SS |
9420 | |
9421 | while (1) | |
9422 | { | |
9423 | c = readchar (remote_timeout); | |
c906108c SS |
9424 | switch (c) |
9425 | { | |
9426 | case SERIAL_TIMEOUT: | |
9427 | if (remote_debug) | |
0f71a2f6 | 9428 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9429 | return -1; |
c906108c SS |
9430 | case '$': |
9431 | if (remote_debug) | |
0f71a2f6 JM |
9432 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9433 | gdb_stdlog); | |
23860348 | 9434 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9435 | case '#': |
9436 | { | |
9437 | unsigned char pktcsum; | |
e1b09194 AC |
9438 | int check_0 = 0; |
9439 | int check_1 = 0; | |
c906108c | 9440 | |
c2d11a7d | 9441 | buf[bc] = '\0'; |
c906108c | 9442 | |
e1b09194 AC |
9443 | check_0 = readchar (remote_timeout); |
9444 | if (check_0 >= 0) | |
9445 | check_1 = readchar (remote_timeout); | |
802188a7 | 9446 | |
e1b09194 AC |
9447 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9448 | { | |
9449 | if (remote_debug) | |
2bc416ba | 9450 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9451 | gdb_stdlog); |
e1b09194 AC |
9452 | return -1; |
9453 | } | |
9454 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9455 | { |
9456 | if (remote_debug) | |
2bc416ba | 9457 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9458 | gdb_stdlog); |
40e3f985 FN |
9459 | return -1; |
9460 | } | |
c906108c | 9461 | |
a6f3e723 SL |
9462 | /* Don't recompute the checksum; with no ack packets we |
9463 | don't have any way to indicate a packet retransmission | |
9464 | is necessary. */ | |
9465 | if (rs->noack_mode) | |
9466 | return bc; | |
9467 | ||
e1b09194 | 9468 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9469 | if (csum == pktcsum) |
c2d11a7d | 9470 | return bc; |
c906108c | 9471 | |
c5aa993b | 9472 | if (remote_debug) |
c906108c | 9473 | { |
b3ced9ba | 9474 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9475 | |
6e5abd65 | 9476 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9477 | "Bad checksum, sentsum=0x%x, " |
9478 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9479 | pktcsum, csum, str.c_str ()); |
c906108c | 9480 | } |
c2d11a7d | 9481 | /* Number of characters in buffer ignoring trailing |
23860348 | 9482 | NULL. */ |
c2d11a7d | 9483 | return -1; |
c906108c | 9484 | } |
23860348 | 9485 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9486 | { |
9487 | int repeat; | |
c906108c | 9488 | |
a744cf53 | 9489 | csum += c; |
b4501125 AC |
9490 | c = readchar (remote_timeout); |
9491 | csum += c; | |
23860348 | 9492 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9493 | |
23860348 | 9494 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9495 | |
6d820c5c | 9496 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9497 | { |
8d64371b | 9498 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9499 | { |
9500 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9501 | buf_p->resize (buf_p->size () + repeat); |
9502 | buf = buf_p->data (); | |
6d820c5c DJ |
9503 | } |
9504 | ||
c2d11a7d JM |
9505 | memset (&buf[bc], buf[bc - 1], repeat); |
9506 | bc += repeat; | |
c2c6d25f JM |
9507 | continue; |
9508 | } | |
9509 | ||
c2d11a7d | 9510 | buf[bc] = '\0'; |
6d820c5c | 9511 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9512 | return -1; |
c2c6d25f | 9513 | } |
c906108c | 9514 | default: |
8d64371b | 9515 | if (bc >= buf_p->size () - 1) |
c906108c | 9516 | { |
6d820c5c | 9517 | /* Make some more room in the buffer. */ |
8d64371b TT |
9518 | buf_p->resize (buf_p->size () * 2); |
9519 | buf = buf_p->data (); | |
c906108c SS |
9520 | } |
9521 | ||
6d820c5c DJ |
9522 | buf[bc++] = c; |
9523 | csum += c; | |
9524 | continue; | |
c906108c SS |
9525 | } |
9526 | } | |
9527 | } | |
9528 | ||
ed2b7c17 TT |
9529 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9530 | in target_wait(). If this timer times out, then it generates an error and | |
9531 | the command is aborted. This replaces most of the need for timeouts in the | |
9532 | GDB test suite, and makes it possible to distinguish between a hung target | |
9533 | and one with slow communications. */ | |
9534 | ||
9535 | static int watchdog = 0; | |
9536 | static void | |
9537 | show_watchdog (struct ui_file *file, int from_tty, | |
9538 | struct cmd_list_element *c, const char *value) | |
9539 | { | |
9540 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9541 | } | |
9542 | ||
c906108c | 9543 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9544 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9545 | FOREVER, wait forever rather than timing out; this is used (in | |
9546 | synchronous mode) to wait for a target that is is executing user | |
9547 | code to stop. */ | |
d9fcf2fb JM |
9548 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9549 | don't have to change all the calls to getpkt to deal with the | |
9550 | return value, because at the moment I don't know what the right | |
23860348 | 9551 | thing to do it for those. */ |
6b8edb51 | 9552 | |
c906108c | 9553 | void |
8d64371b | 9554 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9555 | { |
8d64371b | 9556 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9557 | } |
9558 | ||
9559 | ||
9560 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9561 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9562 | FOREVER, wait forever rather than timing out; this is used (in | |
9563 | synchronous mode) to wait for a target that is is executing user | |
9564 | code to stop. If FOREVER == 0, this function is allowed to time | |
9565 | out gracefully and return an indication of this to the caller. | |
9566 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9567 | consider receiving a notification enough reason to return to the | |
9568 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9569 | holds a notification or not (a regular packet). */ | |
74531fed | 9570 | |
6b8edb51 | 9571 | int |
8d64371b | 9572 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9573 | int forever, int expecting_notif, |
9574 | int *is_notif) | |
c906108c | 9575 | { |
2d717e4f | 9576 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9577 | int c; |
9578 | int tries; | |
9579 | int timeout; | |
df4b58fe | 9580 | int val = -1; |
c906108c | 9581 | |
2d717e4f DJ |
9582 | /* We're reading a new response. Make sure we don't look at a |
9583 | previously cached response. */ | |
9584 | rs->cached_wait_status = 0; | |
9585 | ||
8d64371b | 9586 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9587 | |
9588 | if (forever) | |
74531fed PA |
9589 | timeout = watchdog > 0 ? watchdog : -1; |
9590 | else if (expecting_notif) | |
9591 | timeout = 0; /* There should already be a char in the buffer. If | |
9592 | not, bail out. */ | |
c906108c SS |
9593 | else |
9594 | timeout = remote_timeout; | |
9595 | ||
9596 | #define MAX_TRIES 3 | |
9597 | ||
74531fed PA |
9598 | /* Process any number of notifications, and then return when |
9599 | we get a packet. */ | |
9600 | for (;;) | |
c906108c | 9601 | { |
d9c43928 | 9602 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9603 | times. */ |
9604 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9605 | { |
74531fed PA |
9606 | /* This can loop forever if the remote side sends us |
9607 | characters continuously, but if it pauses, we'll get | |
9608 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9609 | we'll count that as a retry. | |
9610 | ||
9611 | Note that even when forever is set, we will only wait | |
9612 | forever prior to the start of a packet. After that, we | |
9613 | expect characters to arrive at a brisk pace. They should | |
9614 | show up within remote_timeout intervals. */ | |
9615 | do | |
9616 | c = readchar (timeout); | |
9617 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9618 | |
9619 | if (c == SERIAL_TIMEOUT) | |
9620 | { | |
74531fed PA |
9621 | if (expecting_notif) |
9622 | return -1; /* Don't complain, it's normal to not get | |
9623 | anything in this case. */ | |
9624 | ||
23860348 | 9625 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9626 | { |
5b6d1e4f | 9627 | remote_unpush_target (this); |
598d3636 JK |
9628 | throw_error (TARGET_CLOSE_ERROR, |
9629 | _("Watchdog timeout has expired. " | |
9630 | "Target detached.")); | |
c906108c | 9631 | } |
c906108c | 9632 | if (remote_debug) |
0f71a2f6 | 9633 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9634 | } |
74531fed PA |
9635 | else |
9636 | { | |
9637 | /* We've found the start of a packet or notification. | |
9638 | Now collect the data. */ | |
8d64371b | 9639 | val = read_frame (buf); |
74531fed PA |
9640 | if (val >= 0) |
9641 | break; | |
9642 | } | |
9643 | ||
c33e31fd | 9644 | remote_serial_write ("-", 1); |
c906108c | 9645 | } |
c906108c | 9646 | |
74531fed PA |
9647 | if (tries > MAX_TRIES) |
9648 | { | |
9649 | /* We have tried hard enough, and just can't receive the | |
9650 | packet/notification. Give up. */ | |
9651 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9652 | |
74531fed PA |
9653 | /* Skip the ack char if we're in no-ack mode. */ |
9654 | if (!rs->noack_mode) | |
c33e31fd | 9655 | remote_serial_write ("+", 1); |
74531fed PA |
9656 | return -1; |
9657 | } | |
c906108c | 9658 | |
74531fed PA |
9659 | /* If we got an ordinary packet, return that to our caller. */ |
9660 | if (c == '$') | |
c906108c SS |
9661 | { |
9662 | if (remote_debug) | |
43e526b9 | 9663 | { |
6cc8564b LM |
9664 | int max_chars; |
9665 | ||
9666 | if (remote_packet_max_chars < 0) | |
9667 | max_chars = val; | |
9668 | else | |
9669 | max_chars = remote_packet_max_chars; | |
9670 | ||
6f8976bf | 9671 | std::string str |
8d64371b | 9672 | = escape_buffer (buf->data (), |
6cc8564b | 9673 | std::min (val, max_chars)); |
6f8976bf YQ |
9674 | |
9675 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9676 | str.c_str ()); | |
9677 | ||
6cc8564b | 9678 | if (val > max_chars) |
567a3e54 | 9679 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", |
6cc8564b | 9680 | val - max_chars); |
6e5abd65 | 9681 | |
6f8976bf | 9682 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9683 | } |
a6f3e723 SL |
9684 | |
9685 | /* Skip the ack char if we're in no-ack mode. */ | |
9686 | if (!rs->noack_mode) | |
c33e31fd | 9687 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9688 | if (is_notif != NULL) |
9689 | *is_notif = 0; | |
0876f84a | 9690 | return val; |
c906108c SS |
9691 | } |
9692 | ||
74531fed PA |
9693 | /* If we got a notification, handle it, and go back to looking |
9694 | for a packet. */ | |
9695 | else | |
9696 | { | |
9697 | gdb_assert (c == '%'); | |
9698 | ||
9699 | if (remote_debug) | |
9700 | { | |
8d64371b | 9701 | std::string str = escape_buffer (buf->data (), val); |
6e5abd65 | 9702 | |
6e5abd65 PA |
9703 | fprintf_unfiltered (gdb_stdlog, |
9704 | " Notification received: %s\n", | |
b3ced9ba | 9705 | str.c_str ()); |
74531fed | 9706 | } |
fee9eda9 YQ |
9707 | if (is_notif != NULL) |
9708 | *is_notif = 1; | |
c906108c | 9709 | |
8d64371b | 9710 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 9711 | |
74531fed | 9712 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9713 | |
74531fed | 9714 | if (expecting_notif) |
fee9eda9 | 9715 | return val; |
74531fed PA |
9716 | } |
9717 | } | |
9718 | } | |
9719 | ||
6b8edb51 | 9720 | int |
8d64371b | 9721 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 9722 | { |
8d64371b | 9723 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
9724 | } |
9725 | ||
6b8edb51 | 9726 | int |
8d64371b | 9727 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 9728 | int *is_notif) |
74531fed | 9729 | { |
8d64371b | 9730 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 9731 | } |
74531fed | 9732 | |
cbb8991c DB |
9733 | /* Kill any new fork children of process PID that haven't been |
9734 | processed by follow_fork. */ | |
9735 | ||
6b8edb51 PA |
9736 | void |
9737 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 9738 | { |
6b8edb51 | 9739 | remote_state *rs = get_remote_state (); |
cbb8991c | 9740 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
9741 | |
9742 | /* Kill the fork child threads of any threads in process PID | |
9743 | that are stopped at a fork event. */ | |
5b6d1e4f | 9744 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c DB |
9745 | { |
9746 | struct target_waitstatus *ws = &thread->pending_follow; | |
9747 | ||
9748 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9749 | { | |
953edf2b | 9750 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
9751 | int res; |
9752 | ||
6b8edb51 | 9753 | res = remote_vkill (child_pid); |
cbb8991c DB |
9754 | if (res != 0) |
9755 | error (_("Can't kill fork child process %d"), child_pid); | |
9756 | } | |
9757 | } | |
9758 | ||
9759 | /* Check for any pending fork events (not reported or processed yet) | |
9760 | in process PID and kill those fork child threads as well. */ | |
9761 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
9762 | for (auto &event : rs->stop_reply_queue) |
9763 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
9764 | { | |
9765 | int child_pid = event->ws.value.related_pid.pid (); | |
9766 | int res; | |
9767 | ||
9768 | res = remote_vkill (child_pid); | |
9769 | if (res != 0) | |
9770 | error (_("Can't kill fork child process %d"), child_pid); | |
9771 | } | |
cbb8991c DB |
9772 | } |
9773 | ||
c906108c | 9774 | \f |
8020350c DB |
9775 | /* Target hook to kill the current inferior. */ |
9776 | ||
f6ac5f3d PA |
9777 | void |
9778 | remote_target::kill () | |
43ff13b4 | 9779 | { |
8020350c | 9780 | int res = -1; |
e99b03dc | 9781 | int pid = inferior_ptid.pid (); |
8020350c | 9782 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 9783 | |
8020350c | 9784 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9785 | { |
8020350c DB |
9786 | /* If we're stopped while forking and we haven't followed yet, |
9787 | kill the child task. We need to do this before killing the | |
9788 | parent task because if this is a vfork then the parent will | |
9789 | be sleeping. */ | |
6b8edb51 | 9790 | kill_new_fork_children (pid); |
8020350c | 9791 | |
6b8edb51 | 9792 | res = remote_vkill (pid); |
8020350c | 9793 | if (res == 0) |
0fdf84ca | 9794 | { |
bc1e6c81 | 9795 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9796 | return; |
9797 | } | |
8020350c | 9798 | } |
0fdf84ca | 9799 | |
8020350c DB |
9800 | /* If we are in 'target remote' mode and we are killing the only |
9801 | inferior, then we will tell gdbserver to exit and unpush the | |
9802 | target. */ | |
9803 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 9804 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
9805 | { |
9806 | remote_kill_k (); | |
9807 | ||
9808 | /* We've killed the remote end, we get to mourn it. If we are | |
9809 | not in extended mode, mourning the inferior also unpushes | |
9810 | remote_ops from the target stack, which closes the remote | |
9811 | connection. */ | |
bc1e6c81 | 9812 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9813 | |
9814 | return; | |
0fdf84ca | 9815 | } |
43ff13b4 | 9816 | |
8020350c | 9817 | error (_("Can't kill process")); |
43ff13b4 JM |
9818 | } |
9819 | ||
8020350c DB |
9820 | /* Send a kill request to the target using the 'vKill' packet. */ |
9821 | ||
6b8edb51 PA |
9822 | int |
9823 | remote_target::remote_vkill (int pid) | |
82f73884 | 9824 | { |
4082afcc | 9825 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9826 | return -1; |
9827 | ||
6b8edb51 PA |
9828 | remote_state *rs = get_remote_state (); |
9829 | ||
82f73884 | 9830 | /* Tell the remote target to detach. */ |
8d64371b | 9831 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 9832 | putpkt (rs->buf); |
8d64371b | 9833 | getpkt (&rs->buf, 0); |
82f73884 | 9834 | |
4082afcc PA |
9835 | switch (packet_ok (rs->buf, |
9836 | &remote_protocol_packets[PACKET_vKill])) | |
9837 | { | |
9838 | case PACKET_OK: | |
9839 | return 0; | |
9840 | case PACKET_ERROR: | |
9841 | return 1; | |
9842 | case PACKET_UNKNOWN: | |
9843 | return -1; | |
9844 | default: | |
9845 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9846 | } | |
82f73884 PA |
9847 | } |
9848 | ||
8020350c DB |
9849 | /* Send a kill request to the target using the 'k' packet. */ |
9850 | ||
6b8edb51 PA |
9851 | void |
9852 | remote_target::remote_kill_k () | |
82f73884 | 9853 | { |
8020350c DB |
9854 | /* Catch errors so the user can quit from gdb even when we |
9855 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 9856 | try |
82f73884 | 9857 | { |
82f73884 | 9858 | putpkt ("k"); |
82f73884 | 9859 | } |
230d2906 | 9860 | catch (const gdb_exception_error &ex) |
8020350c DB |
9861 | { |
9862 | if (ex.error == TARGET_CLOSE_ERROR) | |
9863 | { | |
9864 | /* If we got an (EOF) error that caused the target | |
9865 | to go away, then we're done, that's what we wanted. | |
9866 | "k" is susceptible to cause a premature EOF, given | |
9867 | that the remote server isn't actually required to | |
9868 | reply to "k", and it can happen that it doesn't | |
9869 | even get to reply ACK to the "k". */ | |
9870 | return; | |
9871 | } | |
82f73884 | 9872 | |
8020350c DB |
9873 | /* Otherwise, something went wrong. We didn't actually kill |
9874 | the target. Just propagate the exception, and let the | |
9875 | user or higher layers decide what to do. */ | |
eedc3f4f | 9876 | throw; |
8020350c | 9877 | } |
82f73884 PA |
9878 | } |
9879 | ||
f6ac5f3d PA |
9880 | void |
9881 | remote_target::mourn_inferior () | |
c906108c | 9882 | { |
8020350c | 9883 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9884 | |
9607784a PA |
9885 | /* We're no longer interested in notification events of an inferior |
9886 | that exited or was killed/detached. */ | |
9887 | discard_pending_stop_replies (current_inferior ()); | |
9888 | ||
8020350c | 9889 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 9890 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 9891 | { |
5b6d1e4f | 9892 | remote_unpush_target (this); |
8020350c DB |
9893 | return; |
9894 | } | |
c906108c | 9895 | |
e24a49d8 PA |
9896 | /* In case we got here due to an error, but we're going to stay |
9897 | connected. */ | |
9898 | rs->waiting_for_stop_reply = 0; | |
9899 | ||
dc1981d7 PA |
9900 | /* If the current general thread belonged to the process we just |
9901 | detached from or has exited, the remote side current general | |
9902 | thread becomes undefined. Considering a case like this: | |
9903 | ||
9904 | - We just got here due to a detach. | |
9905 | - The process that we're detaching from happens to immediately | |
9906 | report a global breakpoint being hit in non-stop mode, in the | |
9907 | same thread we had selected before. | |
9908 | - GDB attaches to this process again. | |
9909 | - This event happens to be the next event we handle. | |
9910 | ||
9911 | GDB would consider that the current general thread didn't need to | |
9912 | be set on the stub side (with Hg), since for all it knew, | |
9913 | GENERAL_THREAD hadn't changed. | |
9914 | ||
9915 | Notice that although in all-stop mode, the remote server always | |
9916 | sets the current thread to the thread reporting the stop event, | |
9917 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9918 | not* change the current thread when reporting a breakpoint hit, | |
9919 | due to the decoupling of event reporting and event handling. | |
9920 | ||
9921 | To keep things simple, we always invalidate our notion of the | |
9922 | current thread. */ | |
47f8a51d | 9923 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9924 | |
8020350c | 9925 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 9926 | generic_mourn_inferior (); |
2d717e4f | 9927 | } |
c906108c | 9928 | |
57810aa7 | 9929 | bool |
f6ac5f3d | 9930 | extended_remote_target::supports_disable_randomization () |
03583c20 | 9931 | { |
4082afcc | 9932 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9933 | } |
9934 | ||
6b8edb51 PA |
9935 | void |
9936 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
9937 | { |
9938 | struct remote_state *rs = get_remote_state (); | |
9939 | char *reply; | |
9940 | ||
8d64371b TT |
9941 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
9942 | "QDisableRandomization:%x", val); | |
03583c20 | 9943 | putpkt (rs->buf); |
b6bb3468 | 9944 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9945 | if (*reply == '\0') |
9946 | error (_("Target does not support QDisableRandomization.")); | |
9947 | if (strcmp (reply, "OK") != 0) | |
9948 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9949 | } | |
9950 | ||
6b8edb51 PA |
9951 | int |
9952 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
9953 | { |
9954 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9955 | int len; |
94585166 | 9956 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9957 | |
2d717e4f DJ |
9958 | /* If the user has disabled vRun support, or we have detected that |
9959 | support is not available, do not try it. */ | |
4082afcc | 9960 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9961 | return -1; |
424163ea | 9962 | |
8d64371b TT |
9963 | strcpy (rs->buf.data (), "vRun;"); |
9964 | len = strlen (rs->buf.data ()); | |
c906108c | 9965 | |
2d717e4f DJ |
9966 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9967 | error (_("Remote file name too long for run packet")); | |
8d64371b | 9968 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 9969 | strlen (remote_exec_file)); |
2d717e4f | 9970 | |
7c5ded6a | 9971 | if (!args.empty ()) |
2d717e4f | 9972 | { |
2d717e4f | 9973 | int i; |
2d717e4f | 9974 | |
773a1edc | 9975 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9976 | for (i = 0; argv[i] != NULL; i++) |
9977 | { | |
9978 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9979 | error (_("Argument list too long for run packet")); | |
9980 | rs->buf[len++] = ';'; | |
8d64371b | 9981 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 9982 | strlen (argv[i])); |
2d717e4f | 9983 | } |
2d717e4f DJ |
9984 | } |
9985 | ||
9986 | rs->buf[len++] = '\0'; | |
9987 | ||
9988 | putpkt (rs->buf); | |
8d64371b | 9989 | getpkt (&rs->buf, 0); |
2d717e4f | 9990 | |
4082afcc | 9991 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9992 | { |
4082afcc | 9993 | case PACKET_OK: |
3405876a | 9994 | /* We have a wait response. All is well. */ |
2d717e4f | 9995 | return 0; |
4082afcc PA |
9996 | case PACKET_UNKNOWN: |
9997 | return -1; | |
9998 | case PACKET_ERROR: | |
2d717e4f DJ |
9999 | if (remote_exec_file[0] == '\0') |
10000 | error (_("Running the default executable on the remote target failed; " | |
10001 | "try \"set remote exec-file\"?")); | |
10002 | else | |
10003 | error (_("Running \"%s\" on the remote target failed"), | |
10004 | remote_exec_file); | |
4082afcc PA |
10005 | default: |
10006 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 10007 | } |
c906108c SS |
10008 | } |
10009 | ||
0a2dde4a SDJ |
10010 | /* Helper function to send set/unset environment packets. ACTION is |
10011 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10012 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10013 | sent. */ | |
10014 | ||
6b8edb51 PA |
10015 | void |
10016 | remote_target::send_environment_packet (const char *action, | |
10017 | const char *packet, | |
10018 | const char *value) | |
0a2dde4a | 10019 | { |
6b8edb51 PA |
10020 | remote_state *rs = get_remote_state (); |
10021 | ||
0a2dde4a SDJ |
10022 | /* Convert the environment variable to an hex string, which |
10023 | is the best format to be transmitted over the wire. */ | |
10024 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10025 | strlen (value)); | |
10026 | ||
8d64371b | 10027 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10028 | "%s:%s", packet, encoded_value.c_str ()); |
10029 | ||
10030 | putpkt (rs->buf); | |
8d64371b TT |
10031 | getpkt (&rs->buf, 0); |
10032 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10033 | warning (_("Unable to %s environment variable '%s' on remote."), |
10034 | action, value); | |
10035 | } | |
10036 | ||
10037 | /* Helper function to handle the QEnvironment* packets. */ | |
10038 | ||
6b8edb51 PA |
10039 | void |
10040 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10041 | { |
6b8edb51 PA |
10042 | remote_state *rs = get_remote_state (); |
10043 | ||
0a2dde4a SDJ |
10044 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10045 | { | |
10046 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10047 | getpkt (&rs->buf, 0); |
10048 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10049 | warning (_("Unable to reset environment on remote.")); |
10050 | } | |
10051 | ||
10052 | gdb_environ *e = ¤t_inferior ()->environment; | |
10053 | ||
10054 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10055 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10056 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10057 | el.c_str ()); |
10058 | ||
10059 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10060 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10061 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10062 | } |
10063 | ||
bc3b087d SDJ |
10064 | /* Helper function to set the current working directory for the |
10065 | inferior in the remote target. */ | |
10066 | ||
6b8edb51 PA |
10067 | void |
10068 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10069 | { |
10070 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10071 | { | |
10072 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10073 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10074 | |
10075 | if (inferior_cwd != NULL) | |
10076 | { | |
10077 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10078 | strlen (inferior_cwd)); | |
10079 | ||
8d64371b | 10080 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10081 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10082 | } | |
10083 | else | |
10084 | { | |
10085 | /* An empty inferior_cwd means that the user wants us to | |
10086 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10087 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10088 | "QSetWorkingDir:"); |
10089 | } | |
10090 | ||
10091 | putpkt (rs->buf); | |
8d64371b | 10092 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10093 | if (packet_ok (rs->buf, |
10094 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10095 | != PACKET_OK) | |
10096 | error (_("\ | |
10097 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10098 | directory: %s"), | |
8d64371b | 10099 | rs->buf.data ()); |
bc3b087d SDJ |
10100 | |
10101 | } | |
10102 | } | |
10103 | ||
2d717e4f DJ |
10104 | /* In the extended protocol we want to be able to do things like |
10105 | "run" and have them basically work as expected. So we need | |
10106 | a special create_inferior function. We support changing the | |
10107 | executable file and the command line arguments, but not the | |
10108 | environment. */ | |
10109 | ||
f6ac5f3d PA |
10110 | void |
10111 | extended_remote_target::create_inferior (const char *exec_file, | |
10112 | const std::string &args, | |
10113 | char **env, int from_tty) | |
43ff13b4 | 10114 | { |
3405876a PA |
10115 | int run_worked; |
10116 | char *stop_reply; | |
10117 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10118 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10119 | |
43ff13b4 | 10120 | /* If running asynchronously, register the target file descriptor |
23860348 | 10121 | with the event loop. */ |
75c99385 | 10122 | if (target_can_async_p ()) |
6a3753b3 | 10123 | target_async (1); |
43ff13b4 | 10124 | |
03583c20 | 10125 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10126 | if (supports_disable_randomization ()) |
03583c20 UW |
10127 | extended_remote_disable_randomization (disable_randomization); |
10128 | ||
aefd8b33 SDJ |
10129 | /* If startup-with-shell is on, we inform gdbserver to start the |
10130 | remote inferior using a shell. */ | |
10131 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10132 | { | |
8d64371b | 10133 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10134 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10135 | putpkt (rs->buf); | |
8d64371b TT |
10136 | getpkt (&rs->buf, 0); |
10137 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10138 | error (_("\ |
10139 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10140 | rs->buf.data ()); |
aefd8b33 SDJ |
10141 | } |
10142 | ||
6b8edb51 | 10143 | extended_remote_environment_support (); |
0a2dde4a | 10144 | |
6b8edb51 | 10145 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10146 | |
43ff13b4 | 10147 | /* Now restart the remote server. */ |
3405876a PA |
10148 | run_worked = extended_remote_run (args) != -1; |
10149 | if (!run_worked) | |
2d717e4f DJ |
10150 | { |
10151 | /* vRun was not supported. Fail if we need it to do what the | |
10152 | user requested. */ | |
10153 | if (remote_exec_file[0]) | |
10154 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10155 | if (!args.empty ()) |
65e65158 | 10156 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10157 | |
2d717e4f DJ |
10158 | /* Fall back to "R". */ |
10159 | extended_remote_restart (); | |
10160 | } | |
424163ea | 10161 | |
3405876a | 10162 | /* vRun's success return is a stop reply. */ |
8d64371b | 10163 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10164 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10165 | |
2d717e4f DJ |
10166 | /* Get updated offsets, if the stub uses qOffsets. */ |
10167 | get_offsets (); | |
2d717e4f | 10168 | } |
c906108c | 10169 | \f |
c5aa993b | 10170 | |
b775012e LM |
10171 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10172 | the list of conditions (in agent expression bytecode format), if any, the | |
10173 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10174 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10175 | |
10176 | static int | |
10177 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10178 | struct bp_target_info *bp_tgt, char *buf, |
10179 | char *buf_end) | |
b775012e | 10180 | { |
3cde5c42 | 10181 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10182 | return 0; |
10183 | ||
10184 | buf += strlen (buf); | |
bba74b36 | 10185 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10186 | buf++; |
10187 | ||
83621223 | 10188 | /* Send conditions to the target. */ |
d538e36d | 10189 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10190 | { |
bba74b36 | 10191 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10192 | buf += strlen (buf); |
3cde5c42 | 10193 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10194 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10195 | *buf = '\0'; | |
10196 | } | |
b775012e LM |
10197 | return 0; |
10198 | } | |
10199 | ||
d3ce09f5 SS |
10200 | static void |
10201 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10202 | struct bp_target_info *bp_tgt, char *buf) | |
10203 | { | |
3cde5c42 | 10204 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10205 | return; |
10206 | ||
10207 | buf += strlen (buf); | |
10208 | ||
10209 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10210 | buf += strlen (buf); | |
10211 | ||
10212 | /* Concatenate all the agent expressions that are commands into the | |
10213 | cmds parameter. */ | |
df97be55 | 10214 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10215 | { |
10216 | sprintf (buf, "X%x,", aexpr->len); | |
10217 | buf += strlen (buf); | |
3cde5c42 | 10218 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10219 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10220 | *buf = '\0'; | |
10221 | } | |
d3ce09f5 SS |
10222 | } |
10223 | ||
8181d85f DJ |
10224 | /* Insert a breakpoint. On targets that have software breakpoint |
10225 | support, we ask the remote target to do the work; on targets | |
10226 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10227 | |
f6ac5f3d PA |
10228 | int |
10229 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10230 | struct bp_target_info *bp_tgt) | |
c906108c | 10231 | { |
d471ea57 AC |
10232 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10233 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10234 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10235 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10236 | |
4082afcc | 10237 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10238 | { |
0d5ed153 | 10239 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10240 | struct remote_state *rs; |
bba74b36 | 10241 | char *p, *endbuf; |
4fff2411 | 10242 | |
28439a30 PA |
10243 | /* Make sure the remote is pointing at the right process, if |
10244 | necessary. */ | |
10245 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10246 | set_general_process (); | |
10247 | ||
4fff2411 | 10248 | rs = get_remote_state (); |
8d64371b TT |
10249 | p = rs->buf.data (); |
10250 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10251 | |
96baa820 JM |
10252 | *(p++) = 'Z'; |
10253 | *(p++) = '0'; | |
10254 | *(p++) = ','; | |
7c0f6dcc | 10255 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10256 | p += hexnumstr (p, addr); |
579c6ad9 | 10257 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10258 | |
f6ac5f3d | 10259 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10260 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10261 | |
f6ac5f3d | 10262 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10263 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10264 | ||
6d820c5c | 10265 | putpkt (rs->buf); |
8d64371b | 10266 | getpkt (&rs->buf, 0); |
96baa820 | 10267 | |
6d820c5c | 10268 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10269 | { |
d471ea57 AC |
10270 | case PACKET_ERROR: |
10271 | return -1; | |
10272 | case PACKET_OK: | |
10273 | return 0; | |
10274 | case PACKET_UNKNOWN: | |
10275 | break; | |
96baa820 JM |
10276 | } |
10277 | } | |
c906108c | 10278 | |
0000e5cc PA |
10279 | /* If this breakpoint has target-side commands but this stub doesn't |
10280 | support Z0 packets, throw error. */ | |
3cde5c42 | 10281 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10282 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10283 | Target doesn't support breakpoints that have target side commands.")); | |
10284 | ||
f6ac5f3d | 10285 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10286 | } |
10287 | ||
f6ac5f3d PA |
10288 | int |
10289 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10290 | struct bp_target_info *bp_tgt, | |
10291 | enum remove_bp_reason reason) | |
c906108c | 10292 | { |
8181d85f | 10293 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10294 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10295 | |
4082afcc | 10296 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10297 | { |
8d64371b TT |
10298 | char *p = rs->buf.data (); |
10299 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10300 | |
28439a30 PA |
10301 | /* Make sure the remote is pointing at the right process, if |
10302 | necessary. */ | |
10303 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10304 | set_general_process (); | |
10305 | ||
96baa820 JM |
10306 | *(p++) = 'z'; |
10307 | *(p++) = '0'; | |
10308 | *(p++) = ','; | |
10309 | ||
8181d85f DJ |
10310 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10311 | p += hexnumstr (p, addr); | |
579c6ad9 | 10312 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10313 | |
6d820c5c | 10314 | putpkt (rs->buf); |
8d64371b | 10315 | getpkt (&rs->buf, 0); |
96baa820 | 10316 | |
6d820c5c | 10317 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10318 | } |
10319 | ||
f6ac5f3d | 10320 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10321 | } |
10322 | ||
f486487f | 10323 | static enum Z_packet_type |
d471ea57 AC |
10324 | watchpoint_to_Z_packet (int type) |
10325 | { | |
10326 | switch (type) | |
10327 | { | |
10328 | case hw_write: | |
bb858e6a | 10329 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10330 | break; |
10331 | case hw_read: | |
bb858e6a | 10332 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10333 | break; |
10334 | case hw_access: | |
bb858e6a | 10335 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10336 | break; |
10337 | default: | |
8e65ff28 | 10338 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10339 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10340 | } |
10341 | } | |
10342 | ||
f6ac5f3d PA |
10343 | int |
10344 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10345 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10346 | { |
d01949b6 | 10347 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10348 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10349 | char *p; |
d471ea57 | 10350 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10351 | |
4082afcc | 10352 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10353 | return 1; |
802188a7 | 10354 | |
28439a30 PA |
10355 | /* Make sure the remote is pointing at the right process, if |
10356 | necessary. */ | |
10357 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10358 | set_general_process (); | |
10359 | ||
8d64371b TT |
10360 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10361 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10362 | addr = remote_address_masked (addr); |
10363 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10364 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10365 | |
6d820c5c | 10366 | putpkt (rs->buf); |
8d64371b | 10367 | getpkt (&rs->buf, 0); |
96baa820 | 10368 | |
6d820c5c | 10369 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10370 | { |
10371 | case PACKET_ERROR: | |
d471ea57 | 10372 | return -1; |
85d721b8 PA |
10373 | case PACKET_UNKNOWN: |
10374 | return 1; | |
d471ea57 AC |
10375 | case PACKET_OK: |
10376 | return 0; | |
10377 | } | |
8e65ff28 | 10378 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10379 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10380 | } |
10381 | ||
57810aa7 | 10382 | bool |
f6ac5f3d PA |
10383 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10384 | CORE_ADDR start, int length) | |
283002cf MR |
10385 | { |
10386 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10387 | ||
10388 | return diff < length; | |
10389 | } | |
10390 | ||
d471ea57 | 10391 | |
f6ac5f3d PA |
10392 | int |
10393 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10394 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10395 | { |
d01949b6 | 10396 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10397 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10398 | char *p; |
d471ea57 AC |
10399 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10400 | ||
4082afcc | 10401 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10402 | return -1; |
802188a7 | 10403 | |
28439a30 PA |
10404 | /* Make sure the remote is pointing at the right process, if |
10405 | necessary. */ | |
10406 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10407 | set_general_process (); | |
10408 | ||
8d64371b TT |
10409 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10410 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10411 | addr = remote_address_masked (addr); |
10412 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10413 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10414 | putpkt (rs->buf); |
8d64371b | 10415 | getpkt (&rs->buf, 0); |
96baa820 | 10416 | |
6d820c5c | 10417 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10418 | { |
10419 | case PACKET_ERROR: | |
10420 | case PACKET_UNKNOWN: | |
10421 | return -1; | |
10422 | case PACKET_OK: | |
10423 | return 0; | |
10424 | } | |
8e65ff28 | 10425 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10426 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10427 | } |
10428 | ||
3c3bea1c | 10429 | |
60fcc1c3 TT |
10430 | static int remote_hw_watchpoint_limit = -1; |
10431 | static int remote_hw_watchpoint_length_limit = -1; | |
10432 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10433 | |
f6ac5f3d PA |
10434 | int |
10435 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10436 | { |
10437 | if (remote_hw_watchpoint_length_limit == 0) | |
10438 | return 0; | |
10439 | else if (remote_hw_watchpoint_length_limit < 0) | |
10440 | return 1; | |
10441 | else if (len <= remote_hw_watchpoint_length_limit) | |
10442 | return 1; | |
10443 | else | |
10444 | return 0; | |
10445 | } | |
10446 | ||
f6ac5f3d PA |
10447 | int |
10448 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10449 | { |
3c3bea1c GS |
10450 | if (type == bp_hardware_breakpoint) |
10451 | { | |
10452 | if (remote_hw_breakpoint_limit == 0) | |
10453 | return 0; | |
501eef12 AC |
10454 | else if (remote_hw_breakpoint_limit < 0) |
10455 | return 1; | |
3c3bea1c GS |
10456 | else if (cnt <= remote_hw_breakpoint_limit) |
10457 | return 1; | |
10458 | } | |
10459 | else | |
10460 | { | |
10461 | if (remote_hw_watchpoint_limit == 0) | |
10462 | return 0; | |
501eef12 AC |
10463 | else if (remote_hw_watchpoint_limit < 0) |
10464 | return 1; | |
3c3bea1c GS |
10465 | else if (ot) |
10466 | return -1; | |
10467 | else if (cnt <= remote_hw_watchpoint_limit) | |
10468 | return 1; | |
10469 | } | |
10470 | return -1; | |
10471 | } | |
10472 | ||
f7e6eed5 PA |
10473 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10474 | ||
57810aa7 | 10475 | bool |
f6ac5f3d | 10476 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10477 | { |
799a2abe | 10478 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10479 | |
799a2abe | 10480 | return (thread->priv != NULL |
7aabaf9d SM |
10481 | && (get_remote_thread_info (thread)->stop_reason |
10482 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10483 | } |
10484 | ||
10485 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10486 | remote. */ | |
10487 | ||
57810aa7 | 10488 | bool |
f6ac5f3d | 10489 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10490 | { |
f7e6eed5 PA |
10491 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10492 | } | |
10493 | ||
10494 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10495 | ||
57810aa7 | 10496 | bool |
f6ac5f3d | 10497 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10498 | { |
799a2abe | 10499 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10500 | |
799a2abe | 10501 | return (thread->priv != NULL |
7aabaf9d SM |
10502 | && (get_remote_thread_info (thread)->stop_reason |
10503 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10504 | } |
10505 | ||
10506 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10507 | remote. */ | |
10508 | ||
57810aa7 | 10509 | bool |
f6ac5f3d | 10510 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10511 | { |
f7e6eed5 PA |
10512 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10513 | } | |
10514 | ||
57810aa7 | 10515 | bool |
f6ac5f3d | 10516 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10517 | { |
799a2abe | 10518 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10519 | |
799a2abe | 10520 | return (thread->priv != NULL |
7aabaf9d SM |
10521 | && (get_remote_thread_info (thread)->stop_reason |
10522 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10523 | } |
10524 | ||
57810aa7 | 10525 | bool |
f6ac5f3d | 10526 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10527 | { |
799a2abe | 10528 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10529 | |
799a2abe | 10530 | if (thread->priv != NULL |
7aabaf9d SM |
10531 | && (get_remote_thread_info (thread)->stop_reason |
10532 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10533 | { |
7aabaf9d | 10534 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10535 | return true; |
4aa7a7f5 JJ |
10536 | } |
10537 | ||
57810aa7 | 10538 | return false; |
3c3bea1c GS |
10539 | } |
10540 | ||
10541 | ||
f6ac5f3d PA |
10542 | int |
10543 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10544 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10545 | { |
0d5ed153 | 10546 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10547 | struct remote_state *rs; |
bba74b36 | 10548 | char *p, *endbuf; |
dd61ec5c | 10549 | char *message; |
3c3bea1c | 10550 | |
4082afcc | 10551 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10552 | return -1; |
2bc416ba | 10553 | |
28439a30 PA |
10554 | /* Make sure the remote is pointing at the right process, if |
10555 | necessary. */ | |
10556 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10557 | set_general_process (); | |
10558 | ||
4fff2411 | 10559 | rs = get_remote_state (); |
8d64371b TT |
10560 | p = rs->buf.data (); |
10561 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10562 | |
96baa820 JM |
10563 | *(p++) = 'Z'; |
10564 | *(p++) = '1'; | |
10565 | *(p++) = ','; | |
802188a7 | 10566 | |
0d5ed153 | 10567 | addr = remote_address_masked (addr); |
96baa820 | 10568 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10569 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10570 | |
f6ac5f3d | 10571 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10572 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10573 | |
f6ac5f3d | 10574 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10575 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10576 | ||
6d820c5c | 10577 | putpkt (rs->buf); |
8d64371b | 10578 | getpkt (&rs->buf, 0); |
96baa820 | 10579 | |
6d820c5c | 10580 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10581 | { |
10582 | case PACKET_ERROR: | |
dd61ec5c MW |
10583 | if (rs->buf[1] == '.') |
10584 | { | |
8d64371b | 10585 | message = strchr (&rs->buf[2], '.'); |
dd61ec5c | 10586 | if (message) |
0316657e | 10587 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10588 | } |
10589 | return -1; | |
d471ea57 AC |
10590 | case PACKET_UNKNOWN: |
10591 | return -1; | |
10592 | case PACKET_OK: | |
10593 | return 0; | |
10594 | } | |
8e65ff28 | 10595 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10596 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10597 | } |
10598 | ||
d471ea57 | 10599 | |
f6ac5f3d PA |
10600 | int |
10601 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10602 | struct bp_target_info *bp_tgt) | |
96baa820 | 10603 | { |
8181d85f | 10604 | CORE_ADDR addr; |
d01949b6 | 10605 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10606 | char *p = rs->buf.data (); |
10607 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10608 | |
4082afcc | 10609 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10610 | return -1; |
802188a7 | 10611 | |
28439a30 PA |
10612 | /* Make sure the remote is pointing at the right process, if |
10613 | necessary. */ | |
10614 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10615 | set_general_process (); | |
10616 | ||
96baa820 JM |
10617 | *(p++) = 'z'; |
10618 | *(p++) = '1'; | |
10619 | *(p++) = ','; | |
802188a7 | 10620 | |
8181d85f | 10621 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10622 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10623 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10624 | |
6d820c5c | 10625 | putpkt (rs->buf); |
8d64371b | 10626 | getpkt (&rs->buf, 0); |
802188a7 | 10627 | |
6d820c5c | 10628 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10629 | { |
10630 | case PACKET_ERROR: | |
10631 | case PACKET_UNKNOWN: | |
10632 | return -1; | |
10633 | case PACKET_OK: | |
10634 | return 0; | |
10635 | } | |
8e65ff28 | 10636 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10637 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10638 | } |
96baa820 | 10639 | |
4a5e7a5b PA |
10640 | /* Verify memory using the "qCRC:" request. */ |
10641 | ||
f6ac5f3d PA |
10642 | int |
10643 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10644 | { |
10645 | struct remote_state *rs = get_remote_state (); | |
10646 | unsigned long host_crc, target_crc; | |
10647 | char *tmp; | |
10648 | ||
936d2992 PA |
10649 | /* It doesn't make sense to use qCRC if the remote target is |
10650 | connected but not running. */ | |
10651 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10652 | { | |
10653 | enum packet_result result; | |
28439a30 | 10654 | |
936d2992 PA |
10655 | /* Make sure the remote is pointing at the right process. */ |
10656 | set_general_process (); | |
4a5e7a5b | 10657 | |
936d2992 | 10658 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10659 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10660 | (long) lma, (long) size); |
10661 | putpkt (rs->buf); | |
4a5e7a5b | 10662 | |
936d2992 PA |
10663 | /* Be clever; compute the host_crc before waiting for target |
10664 | reply. */ | |
10665 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10666 | ||
8d64371b | 10667 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10668 | |
936d2992 PA |
10669 | result = packet_ok (rs->buf, |
10670 | &remote_protocol_packets[PACKET_qCRC]); | |
10671 | if (result == PACKET_ERROR) | |
10672 | return -1; | |
10673 | else if (result == PACKET_OK) | |
10674 | { | |
10675 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10676 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10677 | |
936d2992 PA |
10678 | return (host_crc == target_crc); |
10679 | } | |
10680 | } | |
4a5e7a5b | 10681 | |
f6ac5f3d | 10682 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10683 | } |
10684 | ||
c906108c SS |
10685 | /* compare-sections command |
10686 | ||
10687 | With no arguments, compares each loadable section in the exec bfd | |
10688 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10689 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10690 | |
c906108c | 10691 | static void |
ac88e2de | 10692 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10693 | { |
10694 | asection *s; | |
ce359b09 | 10695 | const char *sectname; |
c906108c SS |
10696 | bfd_size_type size; |
10697 | bfd_vma lma; | |
10698 | int matched = 0; | |
10699 | int mismatched = 0; | |
4a5e7a5b | 10700 | int res; |
95cf3b38 | 10701 | int read_only = 0; |
c906108c SS |
10702 | |
10703 | if (!exec_bfd) | |
8a3fe4f8 | 10704 | error (_("command cannot be used without an exec file")); |
c906108c | 10705 | |
95cf3b38 DT |
10706 | if (args != NULL && strcmp (args, "-r") == 0) |
10707 | { | |
10708 | read_only = 1; | |
10709 | args = NULL; | |
10710 | } | |
10711 | ||
c5aa993b | 10712 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10713 | { |
10714 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10715 | continue; /* Skip non-loadable section. */ |
c906108c | 10716 | |
95cf3b38 DT |
10717 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10718 | continue; /* Skip writeable sections */ | |
10719 | ||
fd361982 | 10720 | size = bfd_section_size (s); |
c906108c | 10721 | if (size == 0) |
0df8b418 | 10722 | continue; /* Skip zero-length section. */ |
c906108c | 10723 | |
fd361982 | 10724 | sectname = bfd_section_name (s); |
c906108c | 10725 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10726 | continue; /* Not the section selected by user. */ |
c906108c | 10727 | |
0df8b418 | 10728 | matched = 1; /* Do this section. */ |
c906108c | 10729 | lma = s->lma; |
c906108c | 10730 | |
b80406ac TT |
10731 | gdb::byte_vector sectdata (size); |
10732 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10733 | |
b80406ac | 10734 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10735 | |
10736 | if (res == -1) | |
5af949e3 | 10737 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10738 | paddress (target_gdbarch (), lma), |
10739 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10740 | |
5af949e3 | 10741 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10742 | paddress (target_gdbarch (), lma), |
10743 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10744 | if (res) |
c906108c SS |
10745 | printf_filtered ("matched.\n"); |
10746 | else | |
c5aa993b JM |
10747 | { |
10748 | printf_filtered ("MIS-MATCHED!\n"); | |
10749 | mismatched++; | |
10750 | } | |
c906108c SS |
10751 | } |
10752 | if (mismatched > 0) | |
936d2992 | 10753 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10754 | the loaded file\n")); |
c906108c | 10755 | if (args && !matched) |
a3f17187 | 10756 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10757 | } |
10758 | ||
0e7f50da UW |
10759 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10760 | into remote target. The number of bytes written to the remote | |
10761 | target is returned, or -1 for error. */ | |
10762 | ||
6b8edb51 PA |
10763 | target_xfer_status |
10764 | remote_target::remote_write_qxfer (const char *object_name, | |
10765 | const char *annex, const gdb_byte *writebuf, | |
10766 | ULONGEST offset, LONGEST len, | |
10767 | ULONGEST *xfered_len, | |
10768 | struct packet_config *packet) | |
0e7f50da UW |
10769 | { |
10770 | int i, buf_len; | |
10771 | ULONGEST n; | |
0e7f50da UW |
10772 | struct remote_state *rs = get_remote_state (); |
10773 | int max_size = get_memory_write_packet_size (); | |
10774 | ||
7cc244de | 10775 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10776 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10777 | |
10778 | /* Insert header. */ | |
8d64371b | 10779 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
10780 | "qXfer:%s:write:%s:%s:", |
10781 | object_name, annex ? annex : "", | |
10782 | phex_nz (offset, sizeof offset)); | |
10783 | max_size -= (i + 1); | |
10784 | ||
10785 | /* Escape as much data as fits into rs->buf. */ | |
10786 | buf_len = remote_escape_output | |
8d64371b | 10787 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 10788 | |
8d64371b TT |
10789 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
10790 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 10791 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10792 | return TARGET_XFER_E_IO; |
0e7f50da | 10793 | |
8d64371b | 10794 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
10795 | |
10796 | *xfered_len = n; | |
92ffd475 | 10797 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10798 | } |
10799 | ||
0876f84a DJ |
10800 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10801 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10802 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10803 | The number of bytes read may be less than LEN without indicating an | |
10804 | EOF. PACKET is checked and updated to indicate whether the remote | |
10805 | target supports this object. */ | |
10806 | ||
6b8edb51 PA |
10807 | target_xfer_status |
10808 | remote_target::remote_read_qxfer (const char *object_name, | |
10809 | const char *annex, | |
10810 | gdb_byte *readbuf, ULONGEST offset, | |
10811 | LONGEST len, | |
10812 | ULONGEST *xfered_len, | |
10813 | struct packet_config *packet) | |
0876f84a | 10814 | { |
0876f84a | 10815 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10816 | LONGEST i, n, packet_len; |
10817 | ||
7cc244de | 10818 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10819 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10820 | |
10821 | /* Check whether we've cached an end-of-object packet that matches | |
10822 | this request. */ | |
8e88304f | 10823 | if (rs->finished_object) |
0876f84a | 10824 | { |
8e88304f TT |
10825 | if (strcmp (object_name, rs->finished_object) == 0 |
10826 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10827 | && offset == rs->finished_offset) | |
9b409511 YQ |
10828 | return TARGET_XFER_EOF; |
10829 | ||
0876f84a DJ |
10830 | |
10831 | /* Otherwise, we're now reading something different. Discard | |
10832 | the cache. */ | |
8e88304f TT |
10833 | xfree (rs->finished_object); |
10834 | xfree (rs->finished_annex); | |
10835 | rs->finished_object = NULL; | |
10836 | rs->finished_annex = NULL; | |
0876f84a DJ |
10837 | } |
10838 | ||
10839 | /* Request only enough to fit in a single packet. The actual data | |
10840 | may not, since we don't know how much of it will need to be escaped; | |
10841 | the target is free to respond with slightly less data. We subtract | |
10842 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10843 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
10844 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
10845 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
10846 | object_name, annex ? annex : "", |
10847 | phex_nz (offset, sizeof offset), | |
10848 | phex_nz (n, sizeof n)); | |
10849 | i = putpkt (rs->buf); | |
10850 | if (i < 0) | |
2ed4b548 | 10851 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10852 | |
10853 | rs->buf[0] = '\0'; | |
8d64371b | 10854 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 10855 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10856 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10857 | |
10858 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 10859 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
10860 | |
10861 | /* 'm' means there is (or at least might be) more data after this | |
10862 | batch. That does not make sense unless there's at least one byte | |
10863 | of data in this reply. */ | |
10864 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10865 | error (_("Remote qXfer reply contained no data.")); | |
10866 | ||
10867 | /* Got some data. */ | |
8d64371b | 10868 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 10869 | packet_len - 1, readbuf, n); |
0876f84a DJ |
10870 | |
10871 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10872 | or possibly empty. If we have the final block of a non-empty |
10873 | object, record this fact to bypass a subsequent partial read. */ | |
10874 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10875 | { |
8e88304f TT |
10876 | rs->finished_object = xstrdup (object_name); |
10877 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10878 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10879 | } |
10880 | ||
9b409511 YQ |
10881 | if (i == 0) |
10882 | return TARGET_XFER_EOF; | |
10883 | else | |
10884 | { | |
10885 | *xfered_len = i; | |
10886 | return TARGET_XFER_OK; | |
10887 | } | |
0876f84a DJ |
10888 | } |
10889 | ||
f6ac5f3d PA |
10890 | enum target_xfer_status |
10891 | remote_target::xfer_partial (enum target_object object, | |
10892 | const char *annex, gdb_byte *readbuf, | |
10893 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10894 | ULONGEST *xfered_len) | |
c906108c | 10895 | { |
82f73884 | 10896 | struct remote_state *rs; |
c906108c | 10897 | int i; |
6d820c5c | 10898 | char *p2; |
1e3ff5ad | 10899 | char query_type; |
124e13d9 | 10900 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10901 | |
e6e4e701 | 10902 | set_remote_traceframe (); |
82f73884 PA |
10903 | set_general_thread (inferior_ptid); |
10904 | ||
10905 | rs = get_remote_state (); | |
10906 | ||
b2182ed2 | 10907 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10908 | if (object == TARGET_OBJECT_MEMORY) |
10909 | { | |
2d717e4f DJ |
10910 | /* If the remote target is connected but not running, we should |
10911 | pass this request down to a lower stratum (e.g. the executable | |
10912 | file). */ | |
10913 | if (!target_has_execution) | |
9b409511 | 10914 | return TARGET_XFER_EOF; |
2d717e4f | 10915 | |
21e3b9b9 | 10916 | if (writebuf != NULL) |
124e13d9 SM |
10917 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10918 | xfered_len); | |
21e3b9b9 | 10919 | else |
6b8edb51 | 10920 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 10921 | xfered_len); |
21e3b9b9 DJ |
10922 | } |
10923 | ||
4aa995e1 PA |
10924 | /* Handle extra signal info using qxfer packets. */ |
10925 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10926 | { | |
10927 | if (readbuf) | |
f6ac5f3d | 10928 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 10929 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10930 | [PACKET_qXfer_siginfo_read]); |
10931 | else | |
f6ac5f3d | 10932 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 10933 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10934 | &remote_protocol_packets |
10935 | [PACKET_qXfer_siginfo_write]); | |
10936 | } | |
10937 | ||
0fb4aa4b PA |
10938 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10939 | { | |
10940 | if (readbuf) | |
f6ac5f3d | 10941 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 10942 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10943 | &remote_protocol_packets |
10944 | [PACKET_qXfer_statictrace_read]); | |
10945 | else | |
2ed4b548 | 10946 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10947 | } |
10948 | ||
a76d924d DJ |
10949 | /* Only handle flash writes. */ |
10950 | if (writebuf != NULL) | |
10951 | { | |
a76d924d DJ |
10952 | switch (object) |
10953 | { | |
10954 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 10955 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 10956 | writebuf); |
a76d924d DJ |
10957 | |
10958 | default: | |
2ed4b548 | 10959 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10960 | } |
10961 | } | |
4b8a223f | 10962 | |
1e3ff5ad AC |
10963 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10964 | objects!!! Instead specify new query packets. */ | |
10965 | switch (object) | |
c906108c | 10966 | { |
1e3ff5ad AC |
10967 | case TARGET_OBJECT_AVR: |
10968 | query_type = 'R'; | |
10969 | break; | |
802188a7 RM |
10970 | |
10971 | case TARGET_OBJECT_AUXV: | |
0876f84a | 10972 | gdb_assert (annex == NULL); |
f6ac5f3d | 10973 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 10974 | xfered_len, |
0876f84a | 10975 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10976 | |
23181151 DJ |
10977 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10978 | return remote_read_qxfer | |
f6ac5f3d | 10979 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10980 | &remote_protocol_packets[PACKET_qXfer_features]); |
10981 | ||
cfa9d6d9 DJ |
10982 | case TARGET_OBJECT_LIBRARIES: |
10983 | return remote_read_qxfer | |
f6ac5f3d | 10984 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10985 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10986 | ||
2268b414 JK |
10987 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10988 | return remote_read_qxfer | |
f6ac5f3d | 10989 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10990 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10991 | ||
fd79ecee DJ |
10992 | case TARGET_OBJECT_MEMORY_MAP: |
10993 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10994 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 10995 | xfered_len, |
fd79ecee DJ |
10996 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10997 | ||
07e059b5 VP |
10998 | case TARGET_OBJECT_OSDATA: |
10999 | /* Should only get here if we're connected. */ | |
5d93a237 | 11000 | gdb_assert (rs->remote_desc); |
07e059b5 | 11001 | return remote_read_qxfer |
f6ac5f3d | 11002 | ("osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
11003 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
11004 | ||
dc146f7c VP |
11005 | case TARGET_OBJECT_THREADS: |
11006 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11007 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11008 | xfered_len, |
dc146f7c VP |
11009 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11010 | ||
b3b9301e PA |
11011 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11012 | gdb_assert (annex == NULL); | |
11013 | return remote_read_qxfer | |
f6ac5f3d | 11014 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11015 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11016 | |
11017 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11018 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11019 | xfered_len, |
78d85199 | 11020 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11021 | |
11022 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11023 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11024 | xfered_len, |
169081d0 TG |
11025 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11026 | ||
9accd112 | 11027 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11028 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11029 | xfered_len, |
9accd112 MM |
11030 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
11031 | ||
f4abbc16 | 11032 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11033 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11034 | len, xfered_len, |
11035 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11036 | ||
c78fa86a | 11037 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11038 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11039 | len, xfered_len, |
11040 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11041 | ||
1e3ff5ad | 11042 | default: |
2ed4b548 | 11043 | return TARGET_XFER_E_IO; |
c906108c SS |
11044 | } |
11045 | ||
0df8b418 | 11046 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11047 | large enough let the caller deal with it. */ |
ea9c271d | 11048 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11049 | return TARGET_XFER_E_IO; |
ea9c271d | 11050 | len = get_remote_packet_size (); |
1e3ff5ad | 11051 | |
23860348 | 11052 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11053 | if (!rs->remote_desc) |
8a3fe4f8 | 11054 | error (_("remote query is only available after target open")); |
c906108c | 11055 | |
1e3ff5ad | 11056 | gdb_assert (annex != NULL); |
4b8a223f | 11057 | gdb_assert (readbuf != NULL); |
c906108c | 11058 | |
8d64371b | 11059 | p2 = rs->buf.data (); |
c906108c SS |
11060 | *p2++ = 'q'; |
11061 | *p2++ = query_type; | |
11062 | ||
23860348 MS |
11063 | /* We used one buffer char for the remote protocol q command and |
11064 | another for the query type. As the remote protocol encapsulation | |
11065 | uses 4 chars plus one extra in case we are debugging | |
11066 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11067 | string. */ | |
c906108c | 11068 | i = 0; |
ea9c271d | 11069 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11070 | { |
1e3ff5ad AC |
11071 | /* Bad caller may have sent forbidden characters. */ |
11072 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11073 | *p2++ = annex[i]; | |
c906108c SS |
11074 | i++; |
11075 | } | |
1e3ff5ad AC |
11076 | *p2 = '\0'; |
11077 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11078 | |
6d820c5c | 11079 | i = putpkt (rs->buf); |
c5aa993b | 11080 | if (i < 0) |
2ed4b548 | 11081 | return TARGET_XFER_E_IO; |
c906108c | 11082 | |
8d64371b TT |
11083 | getpkt (&rs->buf, 0); |
11084 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11085 | |
9b409511 | 11086 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11087 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11088 | } |
11089 | ||
09c98b44 DB |
11090 | /* Implementation of to_get_memory_xfer_limit. */ |
11091 | ||
f6ac5f3d PA |
11092 | ULONGEST |
11093 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11094 | { |
11095 | return get_memory_write_packet_size (); | |
11096 | } | |
11097 | ||
f6ac5f3d PA |
11098 | int |
11099 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11100 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11101 | CORE_ADDR *found_addrp) | |
08388c79 | 11102 | { |
f5656ead | 11103 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11104 | struct remote_state *rs = get_remote_state (); |
11105 | int max_size = get_memory_write_packet_size (); | |
11106 | struct packet_config *packet = | |
11107 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11108 | /* Number of packet bytes used to encode the pattern; |
11109 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11110 | int escaped_pattern_len; |
0df8b418 | 11111 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11112 | int used_pattern_len; |
11113 | int i; | |
11114 | int found; | |
11115 | ULONGEST found_addr; | |
11116 | ||
7cc244de PA |
11117 | /* Don't go to the target if we don't have to. This is done before |
11118 | checking packet_config_support to avoid the possibility that a | |
11119 | success for this edge case means the facility works in | |
11120 | general. */ | |
08388c79 DE |
11121 | if (pattern_len > search_space_len) |
11122 | return 0; | |
11123 | if (pattern_len == 0) | |
11124 | { | |
11125 | *found_addrp = start_addr; | |
11126 | return 1; | |
11127 | } | |
11128 | ||
11129 | /* If we already know the packet isn't supported, fall back to the simple | |
11130 | way of searching memory. */ | |
11131 | ||
4082afcc | 11132 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11133 | { |
11134 | /* Target doesn't provided special support, fall back and use the | |
11135 | standard support (copy memory and do the search here). */ | |
f6ac5f3d | 11136 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11137 | pattern, pattern_len, found_addrp); |
11138 | } | |
11139 | ||
28439a30 PA |
11140 | /* Make sure the remote is pointing at the right process. */ |
11141 | set_general_process (); | |
11142 | ||
08388c79 | 11143 | /* Insert header. */ |
8d64371b | 11144 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11145 | "qSearch:memory:%s;%s;", |
5af949e3 | 11146 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11147 | phex_nz (search_space_len, sizeof (search_space_len))); |
11148 | max_size -= (i + 1); | |
11149 | ||
11150 | /* Escape as much data as fits into rs->buf. */ | |
11151 | escaped_pattern_len = | |
8d64371b TT |
11152 | remote_escape_output (pattern, pattern_len, 1, |
11153 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11154 | &used_pattern_len, max_size); |
11155 | ||
11156 | /* Bail if the pattern is too large. */ | |
11157 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11158 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11159 | |
8d64371b TT |
11160 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11161 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11162 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11163 | { | |
11164 | /* The request may not have worked because the command is not | |
11165 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11166 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11167 | { |
f6ac5f3d | 11168 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11169 | pattern, pattern_len, found_addrp); |
11170 | } | |
11171 | return -1; | |
11172 | } | |
11173 | ||
11174 | if (rs->buf[0] == '0') | |
11175 | found = 0; | |
11176 | else if (rs->buf[0] == '1') | |
11177 | { | |
11178 | found = 1; | |
11179 | if (rs->buf[1] != ',') | |
8d64371b TT |
11180 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11181 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11182 | *found_addrp = found_addr; |
11183 | } | |
11184 | else | |
8d64371b | 11185 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11186 | |
11187 | return found; | |
11188 | } | |
11189 | ||
f6ac5f3d PA |
11190 | void |
11191 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11192 | { |
d01949b6 | 11193 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11194 | char *p = rs->buf.data (); |
96baa820 | 11195 | |
5d93a237 | 11196 | if (!rs->remote_desc) |
8a3fe4f8 | 11197 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11198 | |
23860348 | 11199 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11200 | if (command == NULL) |
11201 | command = ""; | |
11202 | ||
23860348 | 11203 | /* The query prefix. */ |
8d64371b TT |
11204 | strcpy (rs->buf.data (), "qRcmd,"); |
11205 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11206 | |
8d64371b | 11207 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11208 | > get_remote_packet_size ()) |
8a3fe4f8 | 11209 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11210 | |
23860348 | 11211 | /* Encode the actual command. */ |
a30bf1f1 | 11212 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11213 | |
6d820c5c | 11214 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11215 | error (_("Communication problem with target.")); |
96baa820 JM |
11216 | |
11217 | /* get/display the response */ | |
11218 | while (1) | |
11219 | { | |
2e9f7625 DJ |
11220 | char *buf; |
11221 | ||
00bf0b85 | 11222 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11223 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11224 | rs->buf[0] = '\0'; |
8d64371b | 11225 | if (getpkt_sane (&rs->buf, 0) == -1) |
5b37825d PW |
11226 | { |
11227 | /* Timeout. Continue to (try to) read responses. | |
11228 | This is better than stopping with an error, assuming the stub | |
11229 | is still executing the (long) monitor command. | |
11230 | If needed, the user can interrupt gdb using C-c, obtaining | |
11231 | an effect similar to stop on timeout. */ | |
11232 | continue; | |
11233 | } | |
8d64371b | 11234 | buf = rs->buf.data (); |
96baa820 | 11235 | if (buf[0] == '\0') |
8a3fe4f8 | 11236 | error (_("Target does not support this command.")); |
96baa820 JM |
11237 | if (buf[0] == 'O' && buf[1] != 'K') |
11238 | { | |
23860348 | 11239 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11240 | continue; |
11241 | } | |
11242 | if (strcmp (buf, "OK") == 0) | |
11243 | break; | |
7be570e7 JM |
11244 | if (strlen (buf) == 3 && buf[0] == 'E' |
11245 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11246 | { | |
8a3fe4f8 | 11247 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11248 | } |
96baa820 JM |
11249 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11250 | { | |
11251 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11252 | |
96baa820 JM |
11253 | fputc_unfiltered (c, outbuf); |
11254 | } | |
11255 | break; | |
11256 | } | |
11257 | } | |
11258 | ||
f6ac5f3d PA |
11259 | std::vector<mem_region> |
11260 | remote_target::memory_map () | |
fd79ecee | 11261 | { |
a664f67e | 11262 | std::vector<mem_region> result; |
9018be22 | 11263 | gdb::optional<gdb::char_vector> text |
8b88a78e | 11264 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11265 | |
11266 | if (text) | |
9018be22 | 11267 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11268 | |
11269 | return result; | |
11270 | } | |
11271 | ||
c906108c | 11272 | static void |
ac88e2de | 11273 | packet_command (const char *args, int from_tty) |
c906108c | 11274 | { |
6b8edb51 | 11275 | remote_target *remote = get_current_remote_target (); |
c906108c | 11276 | |
6b8edb51 | 11277 | if (remote == nullptr) |
8a3fe4f8 | 11278 | error (_("command can only be used with remote target")); |
c906108c | 11279 | |
6b8edb51 PA |
11280 | remote->packet_command (args, from_tty); |
11281 | } | |
11282 | ||
11283 | void | |
11284 | remote_target::packet_command (const char *args, int from_tty) | |
11285 | { | |
c5aa993b | 11286 | if (!args) |
8a3fe4f8 | 11287 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11288 | |
11289 | puts_filtered ("sending: "); | |
11290 | print_packet (args); | |
11291 | puts_filtered ("\n"); | |
11292 | putpkt (args); | |
11293 | ||
6b8edb51 PA |
11294 | remote_state *rs = get_remote_state (); |
11295 | ||
8d64371b | 11296 | getpkt (&rs->buf, 0); |
c906108c | 11297 | puts_filtered ("received: "); |
8d64371b | 11298 | print_packet (rs->buf.data ()); |
c906108c SS |
11299 | puts_filtered ("\n"); |
11300 | } | |
11301 | ||
11302 | #if 0 | |
23860348 | 11303 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11304 | |
a14ed312 | 11305 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11306 | |
a14ed312 | 11307 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11308 | |
a14ed312 | 11309 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11310 | |
a14ed312 | 11311 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11312 | |
23860348 | 11313 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11314 | |
a14ed312 | 11315 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11316 | |
23860348 | 11317 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11318 | |
a14ed312 | 11319 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11320 | |
a14ed312 | 11321 | static void init_remote_threadtests (void); |
c906108c | 11322 | |
23860348 | 11323 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11324 | |
11325 | static void | |
0b39b52e | 11326 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11327 | { |
11328 | int sample_thread = SAMPLE_THREAD; | |
11329 | ||
a3f17187 | 11330 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11331 | set_general_thread (sample_thread); |
c906108c SS |
11332 | } |
11333 | ||
11334 | ||
11335 | static void | |
0b39b52e | 11336 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11337 | { |
11338 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11339 | int pid = inferior_ptid.pid (); |
fd79271b | 11340 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11341 | |
79d7f229 | 11342 | if (remote_thread_alive (ptid)) |
c906108c SS |
11343 | printf_filtered ("PASS: Thread alive test\n"); |
11344 | else | |
11345 | printf_filtered ("FAIL: Thread alive test\n"); | |
11346 | } | |
11347 | ||
23860348 | 11348 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11349 | |
11350 | void | |
fba45db2 | 11351 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11352 | { |
11353 | char hexid[20]; | |
11354 | ||
405feb71 | 11355 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c SS |
11356 | hexid[16] = 0; |
11357 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11358 | } | |
11359 | ||
11360 | static void | |
0b39b52e | 11361 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11362 | { |
11363 | int startflag = 1; | |
11364 | threadref nextthread; | |
11365 | int done, result_count; | |
11366 | threadref threadlist[3]; | |
11367 | ||
11368 | printf_filtered ("Remote Threadlist test\n"); | |
11369 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11370 | &result_count, &threadlist[0])) | |
11371 | printf_filtered ("FAIL: threadlist test\n"); | |
11372 | else | |
11373 | { | |
11374 | threadref *scan = threadlist; | |
11375 | threadref *limit = scan + result_count; | |
11376 | ||
11377 | while (scan < limit) | |
11378 | output_threadid (" thread ", scan++); | |
11379 | } | |
11380 | } | |
11381 | ||
11382 | void | |
fba45db2 | 11383 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11384 | { |
11385 | output_threadid ("Threadid: ", &info->threadid); | |
11386 | printf_filtered ("Name: %s\n ", info->shortname); | |
11387 | printf_filtered ("State: %s\n", info->display); | |
11388 | printf_filtered ("other: %s\n\n", info->more_display); | |
11389 | } | |
11390 | ||
11391 | int | |
fba45db2 | 11392 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11393 | { |
11394 | int result; | |
11395 | int set; | |
11396 | struct gdb_ext_thread_info threadinfo; | |
11397 | ||
11398 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11399 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11400 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11401 | display_thread_info (&threadinfo); | |
11402 | return result; | |
11403 | } | |
11404 | ||
11405 | static void | |
0b39b52e | 11406 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11407 | { |
11408 | int athread = SAMPLE_THREAD; | |
11409 | threadref thread; | |
11410 | int set; | |
11411 | ||
11412 | int_to_threadref (&thread, athread); | |
11413 | printf_filtered ("Remote Threadinfo test\n"); | |
11414 | if (!get_and_display_threadinfo (&thread)) | |
11415 | printf_filtered ("FAIL cannot get thread info\n"); | |
11416 | } | |
11417 | ||
11418 | static int | |
fba45db2 | 11419 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11420 | { |
11421 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11422 | return get_and_display_threadinfo (ref); | |
11423 | } | |
11424 | ||
11425 | static void | |
0b39b52e | 11426 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11427 | { |
11428 | printf_filtered ("Remote Threadlist update test\n"); | |
11429 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11430 | } | |
11431 | ||
11432 | static void | |
11433 | init_remote_threadtests (void) | |
11434 | { | |
3e43a32a MS |
11435 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11436 | _("Fetch and print the remote list of " | |
590042fc | 11437 | "thread identifiers, one pkt only.")); |
c906108c | 11438 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11439 | _("Fetch and display info about one thread.")); |
c906108c | 11440 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11441 | _("Test setting to a different thread.")); |
c906108c | 11442 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11443 | _("Iterate through updating all remote thread info.")); |
c906108c | 11444 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11445 | _("Remote thread alive test.")); |
c906108c SS |
11446 | } |
11447 | ||
11448 | #endif /* 0 */ | |
11449 | ||
a068643d | 11450 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11451 | |
a068643d | 11452 | std::string |
f6ac5f3d | 11453 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11454 | { |
82f73884 | 11455 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11456 | |
d7e15655 | 11457 | if (ptid == null_ptid) |
7cee1e54 | 11458 | return normal_pid_to_str (ptid); |
0e998d96 | 11459 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11460 | { |
11461 | /* Printing an inferior target id. */ | |
11462 | ||
11463 | /* When multi-process extensions are off, there's no way in the | |
11464 | remote protocol to know the remote process id, if there's any | |
11465 | at all. There's one exception --- when we're connected with | |
11466 | target extended-remote, and we manually attached to a process | |
11467 | with "attach PID". We don't record anywhere a flag that | |
11468 | allows us to distinguish that case from the case of | |
11469 | connecting with extended-remote and the stub already being | |
11470 | attached to a process, and reporting yes to qAttached, hence | |
11471 | no smart special casing here. */ | |
11472 | if (!remote_multi_process_p (rs)) | |
a068643d | 11473 | return "Remote target"; |
ecd0ada5 PA |
11474 | |
11475 | return normal_pid_to_str (ptid); | |
82f73884 | 11476 | } |
ecd0ada5 | 11477 | else |
79d7f229 | 11478 | { |
d7e15655 | 11479 | if (magic_null_ptid == ptid) |
a068643d | 11480 | return "Thread <main>"; |
8020350c | 11481 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11482 | if (ptid.lwp () == 0) |
de0d863e DB |
11483 | return normal_pid_to_str (ptid); |
11484 | else | |
a068643d TT |
11485 | return string_printf ("Thread %d.%ld", |
11486 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11487 | else |
a068643d | 11488 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11489 | } |
f3fb8c85 MS |
11490 | } |
11491 | ||
38691318 KB |
11492 | /* Get the address of the thread local variable in OBJFILE which is |
11493 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11494 | ||
f6ac5f3d PA |
11495 | CORE_ADDR |
11496 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11497 | CORE_ADDR offset) | |
38691318 | 11498 | { |
4082afcc | 11499 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11500 | { |
11501 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11502 | char *p = rs->buf.data (); |
11503 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11504 | enum packet_result result; |
38691318 KB |
11505 | |
11506 | strcpy (p, "qGetTLSAddr:"); | |
11507 | p += strlen (p); | |
82f73884 | 11508 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11509 | *p++ = ','; |
11510 | p += hexnumstr (p, offset); | |
11511 | *p++ = ','; | |
11512 | p += hexnumstr (p, lm); | |
11513 | *p++ = '\0'; | |
11514 | ||
6d820c5c | 11515 | putpkt (rs->buf); |
8d64371b | 11516 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11517 | result = packet_ok (rs->buf, |
11518 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11519 | if (result == PACKET_OK) |
38691318 | 11520 | { |
b926417a | 11521 | ULONGEST addr; |
38691318 | 11522 | |
8d64371b | 11523 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11524 | return addr; |
38691318 | 11525 | } |
571dd617 | 11526 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11527 | throw_error (TLS_GENERIC_ERROR, |
11528 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11529 | else |
109c3e39 AC |
11530 | throw_error (TLS_GENERIC_ERROR, |
11531 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11532 | } |
11533 | else | |
109c3e39 AC |
11534 | throw_error (TLS_GENERIC_ERROR, |
11535 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11536 | /* Not reached. */ |
11537 | return 0; | |
11538 | } | |
11539 | ||
711e434b PM |
11540 | /* Provide thread local base, i.e. Thread Information Block address. |
11541 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11542 | ||
57810aa7 | 11543 | bool |
f6ac5f3d | 11544 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11545 | { |
4082afcc | 11546 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11547 | { |
11548 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11549 | char *p = rs->buf.data (); |
11550 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11551 | enum packet_result result; |
11552 | ||
11553 | strcpy (p, "qGetTIBAddr:"); | |
11554 | p += strlen (p); | |
11555 | p = write_ptid (p, endp, ptid); | |
11556 | *p++ = '\0'; | |
11557 | ||
11558 | putpkt (rs->buf); | |
8d64371b | 11559 | getpkt (&rs->buf, 0); |
711e434b PM |
11560 | result = packet_ok (rs->buf, |
11561 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11562 | if (result == PACKET_OK) | |
11563 | { | |
b926417a | 11564 | ULONGEST val; |
8d64371b | 11565 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11566 | if (addr) |
b926417a | 11567 | *addr = (CORE_ADDR) val; |
57810aa7 | 11568 | return true; |
711e434b PM |
11569 | } |
11570 | else if (result == PACKET_UNKNOWN) | |
11571 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11572 | else | |
11573 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11574 | } | |
11575 | else | |
11576 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11577 | /* Not reached. */ | |
57810aa7 | 11578 | return false; |
711e434b PM |
11579 | } |
11580 | ||
29709017 DJ |
11581 | /* Support for inferring a target description based on the current |
11582 | architecture and the size of a 'g' packet. While the 'g' packet | |
11583 | can have any size (since optional registers can be left off the | |
11584 | end), some sizes are easily recognizable given knowledge of the | |
11585 | approximate architecture. */ | |
11586 | ||
11587 | struct remote_g_packet_guess | |
11588 | { | |
eefce37f TT |
11589 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11590 | : bytes (bytes_), | |
11591 | tdesc (tdesc_) | |
11592 | { | |
11593 | } | |
11594 | ||
29709017 DJ |
11595 | int bytes; |
11596 | const struct target_desc *tdesc; | |
11597 | }; | |
29709017 | 11598 | |
eefce37f | 11599 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11600 | { |
eefce37f | 11601 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11602 | }; |
11603 | ||
11604 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11605 | ||
11606 | static void * | |
11607 | remote_g_packet_data_init (struct obstack *obstack) | |
11608 | { | |
eefce37f | 11609 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11610 | } |
11611 | ||
11612 | void | |
11613 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11614 | const struct target_desc *tdesc) | |
11615 | { | |
11616 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11617 | = ((struct remote_g_packet_data *) |
11618 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11619 | |
11620 | gdb_assert (tdesc != NULL); | |
11621 | ||
eefce37f TT |
11622 | for (const remote_g_packet_guess &guess : data->guesses) |
11623 | if (guess.bytes == bytes) | |
29709017 | 11624 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11625 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11626 | bytes); |
11627 | ||
eefce37f | 11628 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11629 | } |
11630 | ||
eefce37f TT |
11631 | /* Return true if remote_read_description would do anything on this target |
11632 | and architecture, false otherwise. */ | |
d962ef82 | 11633 | |
eefce37f | 11634 | static bool |
d962ef82 DJ |
11635 | remote_read_description_p (struct target_ops *target) |
11636 | { | |
11637 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11638 | = ((struct remote_g_packet_data *) |
11639 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11640 | |
eefce37f | 11641 | return !data->guesses.empty (); |
d962ef82 DJ |
11642 | } |
11643 | ||
f6ac5f3d PA |
11644 | const struct target_desc * |
11645 | remote_target::read_description () | |
29709017 DJ |
11646 | { |
11647 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11648 | = ((struct remote_g_packet_data *) |
11649 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11650 | |
d962ef82 DJ |
11651 | /* Do not try this during initial connection, when we do not know |
11652 | whether there is a running but stopped thread. */ | |
d7e15655 | 11653 | if (!target_has_execution || inferior_ptid == null_ptid) |
b6a8c27b | 11654 | return beneath ()->read_description (); |
d962ef82 | 11655 | |
eefce37f | 11656 | if (!data->guesses.empty ()) |
29709017 | 11657 | { |
29709017 DJ |
11658 | int bytes = send_g_packet (); |
11659 | ||
eefce37f TT |
11660 | for (const remote_g_packet_guess &guess : data->guesses) |
11661 | if (guess.bytes == bytes) | |
11662 | return guess.tdesc; | |
29709017 DJ |
11663 | |
11664 | /* We discard the g packet. A minor optimization would be to | |
11665 | hold on to it, and fill the register cache once we have selected | |
11666 | an architecture, but it's too tricky to do safely. */ | |
11667 | } | |
11668 | ||
b6a8c27b | 11669 | return beneath ()->read_description (); |
29709017 DJ |
11670 | } |
11671 | ||
a6b151f1 DJ |
11672 | /* Remote file transfer support. This is host-initiated I/O, not |
11673 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11674 | ||
11675 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11676 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11677 | decrease *LEFT. Otherwise raise an error. */ | |
11678 | ||
11679 | static void | |
a121b7c1 | 11680 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11681 | { |
11682 | int len = strlen (string); | |
11683 | ||
11684 | if (len > *left) | |
11685 | error (_("Packet too long for target.")); | |
11686 | ||
11687 | memcpy (*buffer, string, len); | |
11688 | *buffer += len; | |
11689 | *left -= len; | |
11690 | ||
11691 | /* NUL-terminate the buffer as a convenience, if there is | |
11692 | room. */ | |
11693 | if (*left) | |
11694 | **buffer = '\0'; | |
11695 | } | |
11696 | ||
11697 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11698 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11699 | decrease *LEFT. Otherwise raise an error. */ | |
11700 | ||
11701 | static void | |
11702 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11703 | int len) | |
11704 | { | |
11705 | if (2 * len > *left) | |
11706 | error (_("Packet too long for target.")); | |
11707 | ||
11708 | bin2hex (bytes, *buffer, len); | |
11709 | *buffer += 2 * len; | |
11710 | *left -= 2 * len; | |
11711 | ||
11712 | /* NUL-terminate the buffer as a convenience, if there is | |
11713 | room. */ | |
11714 | if (*left) | |
11715 | **buffer = '\0'; | |
11716 | } | |
11717 | ||
11718 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11719 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11720 | decrease *LEFT. Otherwise raise an error. */ | |
11721 | ||
11722 | static void | |
11723 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11724 | { | |
11725 | int len = hexnumlen (value); | |
11726 | ||
11727 | if (len > *left) | |
11728 | error (_("Packet too long for target.")); | |
11729 | ||
11730 | hexnumstr (*buffer, value); | |
11731 | *buffer += len; | |
11732 | *left -= len; | |
11733 | ||
11734 | /* NUL-terminate the buffer as a convenience, if there is | |
11735 | room. */ | |
11736 | if (*left) | |
11737 | **buffer = '\0'; | |
11738 | } | |
11739 | ||
11740 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11741 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11742 | was included, and *ATTACHMENT to point to the start of the annex | |
11743 | if any. The length of the packet isn't needed here; there may | |
11744 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11745 | ||
11746 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11747 | -1 is returned, the other variables may not be initialized. */ | |
11748 | ||
11749 | static int | |
11750 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11751 | int *remote_errno, char **attachment) | |
11752 | { | |
11753 | char *p, *p2; | |
11754 | ||
11755 | *remote_errno = 0; | |
11756 | *attachment = NULL; | |
11757 | ||
11758 | if (buffer[0] != 'F') | |
11759 | return -1; | |
11760 | ||
11761 | errno = 0; | |
11762 | *retcode = strtol (&buffer[1], &p, 16); | |
11763 | if (errno != 0 || p == &buffer[1]) | |
11764 | return -1; | |
11765 | ||
11766 | /* Check for ",errno". */ | |
11767 | if (*p == ',') | |
11768 | { | |
11769 | errno = 0; | |
11770 | *remote_errno = strtol (p + 1, &p2, 16); | |
11771 | if (errno != 0 || p + 1 == p2) | |
11772 | return -1; | |
11773 | p = p2; | |
11774 | } | |
11775 | ||
11776 | /* Check for ";attachment". If there is no attachment, the | |
11777 | packet should end here. */ | |
11778 | if (*p == ';') | |
11779 | { | |
11780 | *attachment = p + 1; | |
11781 | return 0; | |
11782 | } | |
11783 | else if (*p == '\0') | |
11784 | return 0; | |
11785 | else | |
11786 | return -1; | |
11787 | } | |
11788 | ||
11789 | /* Send a prepared I/O packet to the target and read its response. | |
11790 | The prepared packet is in the global RS->BUF before this function | |
11791 | is called, and the answer is there when we return. | |
11792 | ||
11793 | COMMAND_BYTES is the length of the request to send, which may include | |
11794 | binary data. WHICH_PACKET is the packet configuration to check | |
11795 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11796 | is set to the error number and -1 is returned. Otherwise the value | |
11797 | returned by the function is returned. | |
11798 | ||
11799 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11800 | attachment is expected; an error will be reported if there's a | |
11801 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11802 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11803 | attachment's length. */ | |
11804 | ||
6b8edb51 PA |
11805 | int |
11806 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
11807 | int *remote_errno, char **attachment, | |
11808 | int *attachment_len) | |
a6b151f1 DJ |
11809 | { |
11810 | struct remote_state *rs = get_remote_state (); | |
11811 | int ret, bytes_read; | |
11812 | char *attachment_tmp; | |
11813 | ||
20db9c52 | 11814 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11815 | { |
11816 | *remote_errno = FILEIO_ENOSYS; | |
11817 | return -1; | |
11818 | } | |
11819 | ||
8d64371b TT |
11820 | putpkt_binary (rs->buf.data (), command_bytes); |
11821 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
11822 | |
11823 | /* If it timed out, something is wrong. Don't try to parse the | |
11824 | buffer. */ | |
11825 | if (bytes_read < 0) | |
11826 | { | |
11827 | *remote_errno = FILEIO_EINVAL; | |
11828 | return -1; | |
11829 | } | |
11830 | ||
11831 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11832 | { | |
11833 | case PACKET_ERROR: | |
11834 | *remote_errno = FILEIO_EINVAL; | |
11835 | return -1; | |
11836 | case PACKET_UNKNOWN: | |
11837 | *remote_errno = FILEIO_ENOSYS; | |
11838 | return -1; | |
11839 | case PACKET_OK: | |
11840 | break; | |
11841 | } | |
11842 | ||
8d64371b | 11843 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
11844 | &attachment_tmp)) |
11845 | { | |
11846 | *remote_errno = FILEIO_EINVAL; | |
11847 | return -1; | |
11848 | } | |
11849 | ||
11850 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11851 | if ((attachment_tmp == NULL && attachment != NULL) | |
11852 | || (attachment_tmp != NULL && attachment == NULL)) | |
11853 | { | |
11854 | *remote_errno = FILEIO_EINVAL; | |
11855 | return -1; | |
11856 | } | |
11857 | ||
11858 | /* If an attachment was found, it must point into the packet buffer; | |
11859 | work out how many bytes there were. */ | |
11860 | if (attachment_tmp != NULL) | |
11861 | { | |
11862 | *attachment = attachment_tmp; | |
8d64371b | 11863 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
11864 | } |
11865 | ||
11866 | return ret; | |
11867 | } | |
11868 | ||
dd194f6b | 11869 | /* See declaration.h. */ |
80152258 | 11870 | |
dd194f6b PA |
11871 | void |
11872 | readahead_cache::invalidate () | |
80152258 | 11873 | { |
dd194f6b | 11874 | this->fd = -1; |
80152258 PA |
11875 | } |
11876 | ||
dd194f6b | 11877 | /* See declaration.h. */ |
80152258 | 11878 | |
dd194f6b PA |
11879 | void |
11880 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 11881 | { |
dd194f6b PA |
11882 | if (this->fd == fd) |
11883 | this->fd = -1; | |
80152258 PA |
11884 | } |
11885 | ||
15a201c8 GB |
11886 | /* Set the filesystem remote_hostio functions that take FILENAME |
11887 | arguments will use. Return 0 on success, or -1 if an error | |
11888 | occurs (and set *REMOTE_ERRNO). */ | |
11889 | ||
6b8edb51 PA |
11890 | int |
11891 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
11892 | int *remote_errno) | |
15a201c8 GB |
11893 | { |
11894 | struct remote_state *rs = get_remote_state (); | |
11895 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 11896 | char *p = rs->buf.data (); |
15a201c8 GB |
11897 | int left = get_remote_packet_size () - 1; |
11898 | char arg[9]; | |
11899 | int ret; | |
11900 | ||
11901 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11902 | return 0; | |
11903 | ||
11904 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11905 | return 0; | |
11906 | ||
11907 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11908 | ||
11909 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11910 | remote_buffer_add_string (&p, &left, arg); | |
11911 | ||
8d64371b | 11912 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
11913 | remote_errno, NULL, NULL); |
11914 | ||
11915 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11916 | return 0; | |
11917 | ||
11918 | if (ret == 0) | |
11919 | rs->fs_pid = required_pid; | |
11920 | ||
11921 | return ret; | |
11922 | } | |
11923 | ||
12e2a5fd | 11924 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 11925 | |
6b8edb51 PA |
11926 | int |
11927 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
11928 | int flags, int mode, int warn_if_slow, | |
11929 | int *remote_errno) | |
a6b151f1 DJ |
11930 | { |
11931 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11932 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11933 | int left = get_remote_packet_size () - 1; |
11934 | ||
4313b8c0 GB |
11935 | if (warn_if_slow) |
11936 | { | |
11937 | static int warning_issued = 0; | |
11938 | ||
11939 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11940 | filename); | |
11941 | ||
11942 | if (!warning_issued) | |
11943 | { | |
11944 | warning (_("File transfers from remote targets can be slow." | |
11945 | " Use \"set sysroot\" to access files locally" | |
11946 | " instead.")); | |
11947 | warning_issued = 1; | |
11948 | } | |
11949 | } | |
11950 | ||
15a201c8 GB |
11951 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11952 | return -1; | |
11953 | ||
a6b151f1 DJ |
11954 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11955 | ||
11956 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11957 | strlen (filename)); | |
11958 | remote_buffer_add_string (&p, &left, ","); | |
11959 | ||
11960 | remote_buffer_add_int (&p, &left, flags); | |
11961 | remote_buffer_add_string (&p, &left, ","); | |
11962 | ||
11963 | remote_buffer_add_int (&p, &left, mode); | |
11964 | ||
8d64371b | 11965 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
11966 | remote_errno, NULL, NULL); |
11967 | } | |
11968 | ||
f6ac5f3d PA |
11969 | int |
11970 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
11971 | int flags, int mode, int warn_if_slow, | |
11972 | int *remote_errno) | |
11973 | { | |
6b8edb51 | 11974 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
11975 | remote_errno); |
11976 | } | |
11977 | ||
12e2a5fd | 11978 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 11979 | |
6b8edb51 PA |
11980 | int |
11981 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11982 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11983 | { |
11984 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11985 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11986 | int left = get_remote_packet_size (); |
11987 | int out_len; | |
11988 | ||
dd194f6b | 11989 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 11990 | |
a6b151f1 DJ |
11991 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11992 | ||
11993 | remote_buffer_add_int (&p, &left, fd); | |
11994 | remote_buffer_add_string (&p, &left, ","); | |
11995 | ||
11996 | remote_buffer_add_int (&p, &left, offset); | |
11997 | remote_buffer_add_string (&p, &left, ","); | |
11998 | ||
124e13d9 | 11999 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12000 | (get_remote_packet_size () |
12001 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12002 | |
8d64371b | 12003 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12004 | remote_errno, NULL, NULL); |
12005 | } | |
12006 | ||
f6ac5f3d PA |
12007 | int |
12008 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12009 | ULONGEST offset, int *remote_errno) | |
12010 | { | |
6b8edb51 | 12011 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12012 | } |
12013 | ||
80152258 PA |
12014 | /* Helper for the implementation of to_fileio_pread. Read the file |
12015 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12016 | |
6b8edb51 PA |
12017 | int |
12018 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12019 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12020 | { |
12021 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12022 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12023 | char *attachment; |
12024 | int left = get_remote_packet_size (); | |
12025 | int ret, attachment_len; | |
12026 | int read_len; | |
12027 | ||
12028 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12029 | ||
12030 | remote_buffer_add_int (&p, &left, fd); | |
12031 | remote_buffer_add_string (&p, &left, ","); | |
12032 | ||
12033 | remote_buffer_add_int (&p, &left, len); | |
12034 | remote_buffer_add_string (&p, &left, ","); | |
12035 | ||
12036 | remote_buffer_add_int (&p, &left, offset); | |
12037 | ||
8d64371b | 12038 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12039 | remote_errno, &attachment, |
12040 | &attachment_len); | |
12041 | ||
12042 | if (ret < 0) | |
12043 | return ret; | |
12044 | ||
bc20a4af | 12045 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12046 | read_buf, len); |
12047 | if (read_len != ret) | |
12048 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12049 | ||
12050 | return ret; | |
12051 | } | |
12052 | ||
dd194f6b | 12053 | /* See declaration.h. */ |
80152258 | 12054 | |
dd194f6b PA |
12055 | int |
12056 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12057 | ULONGEST offset) | |
80152258 | 12058 | { |
dd194f6b PA |
12059 | if (this->fd == fd |
12060 | && this->offset <= offset | |
12061 | && offset < this->offset + this->bufsize) | |
80152258 | 12062 | { |
dd194f6b | 12063 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12064 | |
12065 | if (offset + len > max) | |
12066 | len = max - offset; | |
12067 | ||
dd194f6b | 12068 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12069 | return len; |
12070 | } | |
12071 | ||
12072 | return 0; | |
12073 | } | |
12074 | ||
12075 | /* Implementation of to_fileio_pread. */ | |
12076 | ||
6b8edb51 PA |
12077 | int |
12078 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12079 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12080 | { |
12081 | int ret; | |
12082 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12083 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12084 | |
dd194f6b | 12085 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12086 | if (ret > 0) |
12087 | { | |
12088 | cache->hit_count++; | |
12089 | ||
12090 | if (remote_debug) | |
12091 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
12092 | pulongest (cache->hit_count)); | |
12093 | return ret; | |
12094 | } | |
12095 | ||
12096 | cache->miss_count++; | |
12097 | if (remote_debug) | |
12098 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
12099 | pulongest (cache->miss_count)); | |
12100 | ||
12101 | cache->fd = fd; | |
12102 | cache->offset = offset; | |
12103 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12104 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12105 | |
6b8edb51 | 12106 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12107 | cache->offset, remote_errno); |
12108 | if (ret <= 0) | |
12109 | { | |
dd194f6b | 12110 | cache->invalidate_fd (fd); |
80152258 PA |
12111 | return ret; |
12112 | } | |
12113 | ||
12114 | cache->bufsize = ret; | |
dd194f6b | 12115 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12116 | } |
12117 | ||
f6ac5f3d PA |
12118 | int |
12119 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12120 | ULONGEST offset, int *remote_errno) | |
12121 | { | |
6b8edb51 | 12122 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12123 | } |
12124 | ||
12e2a5fd | 12125 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12126 | |
6b8edb51 PA |
12127 | int |
12128 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12129 | { |
12130 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12131 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12132 | int left = get_remote_packet_size () - 1; |
12133 | ||
dd194f6b | 12134 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12135 | |
a6b151f1 DJ |
12136 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12137 | ||
12138 | remote_buffer_add_int (&p, &left, fd); | |
12139 | ||
8d64371b | 12140 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12141 | remote_errno, NULL, NULL); |
12142 | } | |
12143 | ||
f6ac5f3d PA |
12144 | int |
12145 | remote_target::fileio_close (int fd, int *remote_errno) | |
12146 | { | |
6b8edb51 | 12147 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12148 | } |
12149 | ||
12e2a5fd | 12150 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12151 | |
6b8edb51 PA |
12152 | int |
12153 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12154 | int *remote_errno) | |
a6b151f1 DJ |
12155 | { |
12156 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12157 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12158 | int left = get_remote_packet_size () - 1; |
12159 | ||
15a201c8 GB |
12160 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12161 | return -1; | |
12162 | ||
a6b151f1 DJ |
12163 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12164 | ||
12165 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12166 | strlen (filename)); | |
12167 | ||
8d64371b | 12168 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12169 | remote_errno, NULL, NULL); |
12170 | } | |
12171 | ||
f6ac5f3d PA |
12172 | int |
12173 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12174 | int *remote_errno) | |
12175 | { | |
6b8edb51 | 12176 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12177 | } |
12178 | ||
12e2a5fd | 12179 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12180 | |
f6ac5f3d PA |
12181 | gdb::optional<std::string> |
12182 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12183 | int *remote_errno) | |
b9e7b9c3 UW |
12184 | { |
12185 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12186 | char *p = rs->buf.data (); |
b9e7b9c3 UW |
12187 | char *attachment; |
12188 | int left = get_remote_packet_size (); | |
12189 | int len, attachment_len; | |
12190 | int read_len; | |
b9e7b9c3 | 12191 | |
15a201c8 | 12192 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12193 | return {}; |
15a201c8 | 12194 | |
b9e7b9c3 UW |
12195 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12196 | ||
12197 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12198 | strlen (filename)); | |
12199 | ||
8d64371b | 12200 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12201 | remote_errno, &attachment, |
12202 | &attachment_len); | |
12203 | ||
12204 | if (len < 0) | |
e0d3522b | 12205 | return {}; |
b9e7b9c3 | 12206 | |
e0d3522b | 12207 | std::string ret (len, '\0'); |
b9e7b9c3 | 12208 | |
bc20a4af | 12209 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12210 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12211 | if (read_len != len) |
12212 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12213 | ||
b9e7b9c3 UW |
12214 | return ret; |
12215 | } | |
12216 | ||
12e2a5fd | 12217 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12218 | |
f6ac5f3d PA |
12219 | int |
12220 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12221 | { |
12222 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12223 | char *p = rs->buf.data (); |
0a93529c GB |
12224 | int left = get_remote_packet_size (); |
12225 | int attachment_len, ret; | |
12226 | char *attachment; | |
12227 | struct fio_stat fst; | |
12228 | int read_len; | |
12229 | ||
464b0089 GB |
12230 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12231 | ||
12232 | remote_buffer_add_int (&p, &left, fd); | |
12233 | ||
8d64371b | 12234 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12235 | remote_errno, &attachment, |
12236 | &attachment_len); | |
12237 | if (ret < 0) | |
0a93529c | 12238 | { |
464b0089 GB |
12239 | if (*remote_errno != FILEIO_ENOSYS) |
12240 | return ret; | |
12241 | ||
0a93529c GB |
12242 | /* Strictly we should return -1, ENOSYS here, but when |
12243 | "set sysroot remote:" was implemented in August 2008 | |
12244 | BFD's need for a stat function was sidestepped with | |
12245 | this hack. This was not remedied until March 2015 | |
12246 | so we retain the previous behavior to avoid breaking | |
12247 | compatibility. | |
12248 | ||
12249 | Note that the memset is a March 2015 addition; older | |
12250 | GDBs set st_size *and nothing else* so the structure | |
12251 | would have garbage in all other fields. This might | |
12252 | break something but retaining the previous behavior | |
12253 | here would be just too wrong. */ | |
12254 | ||
12255 | memset (st, 0, sizeof (struct stat)); | |
12256 | st->st_size = INT_MAX; | |
12257 | return 0; | |
12258 | } | |
12259 | ||
0a93529c GB |
12260 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12261 | (gdb_byte *) &fst, sizeof (fst)); | |
12262 | ||
12263 | if (read_len != ret) | |
12264 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12265 | ||
12266 | if (read_len != sizeof (fst)) | |
12267 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12268 | read_len, (int) sizeof (fst)); | |
12269 | ||
12270 | remote_fileio_to_host_stat (&fst, st); | |
12271 | ||
12272 | return 0; | |
12273 | } | |
12274 | ||
12e2a5fd | 12275 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12276 | |
57810aa7 | 12277 | bool |
f6ac5f3d | 12278 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12279 | { |
12280 | /* Valgrind GDB presents itself as a remote target but works | |
12281 | on the local filesystem: it does not implement remote get | |
12282 | and users are not expected to set a sysroot. To handle | |
12283 | this case we treat the remote filesystem as local if the | |
12284 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12285 | does not support vFile:open. */ | |
a3be80c3 | 12286 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12287 | { |
12288 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12289 | ||
12290 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12291 | { | |
12292 | int fd, remote_errno; | |
12293 | ||
12294 | /* Try opening a file to probe support. The supplied | |
12295 | filename is irrelevant, we only care about whether | |
12296 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12297 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12298 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12299 | &remote_errno); |
12300 | ||
12301 | if (fd >= 0) | |
6b8edb51 | 12302 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12303 | |
12304 | ps = packet_support (PACKET_vFile_open); | |
12305 | } | |
12306 | ||
12307 | if (ps == PACKET_DISABLE) | |
12308 | { | |
12309 | static int warning_issued = 0; | |
12310 | ||
12311 | if (!warning_issued) | |
12312 | { | |
12313 | warning (_("remote target does not support file" | |
12314 | " transfer, attempting to access files" | |
12315 | " from local filesystem.")); | |
12316 | warning_issued = 1; | |
12317 | } | |
12318 | ||
57810aa7 | 12319 | return true; |
e3dd7556 GB |
12320 | } |
12321 | } | |
12322 | ||
57810aa7 | 12323 | return false; |
e3dd7556 GB |
12324 | } |
12325 | ||
a6b151f1 DJ |
12326 | static int |
12327 | remote_fileio_errno_to_host (int errnum) | |
12328 | { | |
12329 | switch (errnum) | |
12330 | { | |
12331 | case FILEIO_EPERM: | |
12332 | return EPERM; | |
12333 | case FILEIO_ENOENT: | |
12334 | return ENOENT; | |
12335 | case FILEIO_EINTR: | |
12336 | return EINTR; | |
12337 | case FILEIO_EIO: | |
12338 | return EIO; | |
12339 | case FILEIO_EBADF: | |
12340 | return EBADF; | |
12341 | case FILEIO_EACCES: | |
12342 | return EACCES; | |
12343 | case FILEIO_EFAULT: | |
12344 | return EFAULT; | |
12345 | case FILEIO_EBUSY: | |
12346 | return EBUSY; | |
12347 | case FILEIO_EEXIST: | |
12348 | return EEXIST; | |
12349 | case FILEIO_ENODEV: | |
12350 | return ENODEV; | |
12351 | case FILEIO_ENOTDIR: | |
12352 | return ENOTDIR; | |
12353 | case FILEIO_EISDIR: | |
12354 | return EISDIR; | |
12355 | case FILEIO_EINVAL: | |
12356 | return EINVAL; | |
12357 | case FILEIO_ENFILE: | |
12358 | return ENFILE; | |
12359 | case FILEIO_EMFILE: | |
12360 | return EMFILE; | |
12361 | case FILEIO_EFBIG: | |
12362 | return EFBIG; | |
12363 | case FILEIO_ENOSPC: | |
12364 | return ENOSPC; | |
12365 | case FILEIO_ESPIPE: | |
12366 | return ESPIPE; | |
12367 | case FILEIO_EROFS: | |
12368 | return EROFS; | |
12369 | case FILEIO_ENOSYS: | |
12370 | return ENOSYS; | |
12371 | case FILEIO_ENAMETOOLONG: | |
12372 | return ENAMETOOLONG; | |
12373 | } | |
12374 | return -1; | |
12375 | } | |
12376 | ||
12377 | static char * | |
12378 | remote_hostio_error (int errnum) | |
12379 | { | |
12380 | int host_error = remote_fileio_errno_to_host (errnum); | |
12381 | ||
12382 | if (host_error == -1) | |
12383 | error (_("Unknown remote I/O error %d"), errnum); | |
12384 | else | |
12385 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12386 | } | |
12387 | ||
440b7aec PA |
12388 | /* A RAII wrapper around a remote file descriptor. */ |
12389 | ||
12390 | class scoped_remote_fd | |
a6b151f1 | 12391 | { |
440b7aec | 12392 | public: |
6b8edb51 PA |
12393 | scoped_remote_fd (remote_target *remote, int fd) |
12394 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12395 | { |
12396 | } | |
a6b151f1 | 12397 | |
440b7aec PA |
12398 | ~scoped_remote_fd () |
12399 | { | |
12400 | if (m_fd != -1) | |
12401 | { | |
12402 | try | |
12403 | { | |
12404 | int remote_errno; | |
6b8edb51 | 12405 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12406 | } |
12407 | catch (...) | |
12408 | { | |
12409 | /* Swallow exception before it escapes the dtor. If | |
12410 | something goes wrong, likely the connection is gone, | |
12411 | and there's nothing else that can be done. */ | |
12412 | } | |
12413 | } | |
12414 | } | |
12415 | ||
12416 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12417 | ||
12418 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12419 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12420 | { |
12421 | int fd = m_fd; | |
12422 | m_fd = -1; | |
12423 | return fd; | |
12424 | } | |
12425 | ||
12426 | /* Return the owned file descriptor. */ | |
12427 | int get () const noexcept | |
12428 | { | |
12429 | return m_fd; | |
12430 | } | |
12431 | ||
12432 | private: | |
6b8edb51 PA |
12433 | /* The remote target. */ |
12434 | remote_target *m_remote; | |
12435 | ||
440b7aec PA |
12436 | /* The owned remote I/O file descriptor. */ |
12437 | int m_fd; | |
12438 | }; | |
a6b151f1 DJ |
12439 | |
12440 | void | |
12441 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12442 | { |
12443 | remote_target *remote = get_current_remote_target (); | |
12444 | ||
12445 | if (remote == nullptr) | |
12446 | error (_("command can only be used with remote target")); | |
12447 | ||
12448 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12449 | } | |
12450 | ||
12451 | void | |
12452 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12453 | int from_tty) | |
a6b151f1 | 12454 | { |
440b7aec | 12455 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12456 | int bytes_in_buffer; |
12457 | int saw_eof; | |
12458 | ULONGEST offset; | |
a6b151f1 | 12459 | |
d419f42d | 12460 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12461 | if (file == NULL) |
12462 | perror_with_name (local_file); | |
a6b151f1 | 12463 | |
440b7aec | 12464 | scoped_remote_fd fd |
6b8edb51 PA |
12465 | (this, remote_hostio_open (NULL, |
12466 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12467 | | FILEIO_O_TRUNC), | |
12468 | 0700, 0, &remote_errno)); | |
440b7aec | 12469 | if (fd.get () == -1) |
a6b151f1 DJ |
12470 | remote_hostio_error (remote_errno); |
12471 | ||
12472 | /* Send up to this many bytes at once. They won't all fit in the | |
12473 | remote packet limit, so we'll transfer slightly fewer. */ | |
12474 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12475 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12476 | |
a6b151f1 DJ |
12477 | bytes_in_buffer = 0; |
12478 | saw_eof = 0; | |
12479 | offset = 0; | |
12480 | while (bytes_in_buffer || !saw_eof) | |
12481 | { | |
12482 | if (!saw_eof) | |
12483 | { | |
5ca3b260 | 12484 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12485 | io_size - bytes_in_buffer, |
d419f42d | 12486 | file.get ()); |
a6b151f1 DJ |
12487 | if (bytes == 0) |
12488 | { | |
d419f42d | 12489 | if (ferror (file.get ())) |
a6b151f1 DJ |
12490 | error (_("Error reading %s."), local_file); |
12491 | else | |
12492 | { | |
12493 | /* EOF. Unless there is something still in the | |
12494 | buffer from the last iteration, we are done. */ | |
12495 | saw_eof = 1; | |
12496 | if (bytes_in_buffer == 0) | |
12497 | break; | |
12498 | } | |
12499 | } | |
12500 | } | |
12501 | else | |
12502 | bytes = 0; | |
12503 | ||
12504 | bytes += bytes_in_buffer; | |
12505 | bytes_in_buffer = 0; | |
12506 | ||
5ca3b260 | 12507 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12508 | offset, &remote_errno); |
a6b151f1 DJ |
12509 | |
12510 | if (retcode < 0) | |
12511 | remote_hostio_error (remote_errno); | |
12512 | else if (retcode == 0) | |
12513 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12514 | else if (retcode < bytes) | |
12515 | { | |
12516 | /* Short write. Save the rest of the read data for the next | |
12517 | write. */ | |
12518 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12519 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12520 | } |
12521 | ||
12522 | offset += retcode; | |
12523 | } | |
12524 | ||
6b8edb51 | 12525 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12526 | remote_hostio_error (remote_errno); |
12527 | ||
12528 | if (from_tty) | |
12529 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12530 | } |
12531 | ||
12532 | void | |
12533 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12534 | { |
12535 | remote_target *remote = get_current_remote_target (); | |
12536 | ||
12537 | if (remote == nullptr) | |
12538 | error (_("command can only be used with remote target")); | |
12539 | ||
12540 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12541 | } | |
12542 | ||
12543 | void | |
12544 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12545 | int from_tty) | |
a6b151f1 | 12546 | { |
440b7aec | 12547 | int remote_errno, bytes, io_size; |
a6b151f1 | 12548 | ULONGEST offset; |
a6b151f1 | 12549 | |
440b7aec | 12550 | scoped_remote_fd fd |
6b8edb51 PA |
12551 | (this, remote_hostio_open (NULL, |
12552 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12553 | &remote_errno)); | |
440b7aec | 12554 | if (fd.get () == -1) |
a6b151f1 DJ |
12555 | remote_hostio_error (remote_errno); |
12556 | ||
d419f42d | 12557 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12558 | if (file == NULL) |
12559 | perror_with_name (local_file); | |
a6b151f1 DJ |
12560 | |
12561 | /* Send up to this many bytes at once. They won't all fit in the | |
12562 | remote packet limit, so we'll transfer slightly fewer. */ | |
12563 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12564 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12565 | |
a6b151f1 DJ |
12566 | offset = 0; |
12567 | while (1) | |
12568 | { | |
5ca3b260 | 12569 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12570 | &remote_errno); |
a6b151f1 DJ |
12571 | if (bytes == 0) |
12572 | /* Success, but no bytes, means end-of-file. */ | |
12573 | break; | |
12574 | if (bytes == -1) | |
12575 | remote_hostio_error (remote_errno); | |
12576 | ||
12577 | offset += bytes; | |
12578 | ||
5ca3b260 | 12579 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12580 | if (bytes == 0) |
12581 | perror_with_name (local_file); | |
12582 | } | |
12583 | ||
6b8edb51 | 12584 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12585 | remote_hostio_error (remote_errno); |
12586 | ||
12587 | if (from_tty) | |
12588 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12589 | } |
12590 | ||
12591 | void | |
12592 | remote_file_delete (const char *remote_file, int from_tty) | |
12593 | { | |
6b8edb51 | 12594 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12595 | |
6b8edb51 | 12596 | if (remote == nullptr) |
a6b151f1 DJ |
12597 | error (_("command can only be used with remote target")); |
12598 | ||
6b8edb51 PA |
12599 | remote->remote_file_delete (remote_file, from_tty); |
12600 | } | |
12601 | ||
12602 | void | |
12603 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12604 | { | |
12605 | int retcode, remote_errno; | |
12606 | ||
12607 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12608 | if (retcode == -1) |
12609 | remote_hostio_error (remote_errno); | |
12610 | ||
12611 | if (from_tty) | |
12612 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12613 | } | |
12614 | ||
12615 | static void | |
ac88e2de | 12616 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12617 | { |
d1a41061 PP |
12618 | if (args == NULL) |
12619 | error_no_arg (_("file to put")); | |
12620 | ||
773a1edc | 12621 | gdb_argv argv (args); |
a6b151f1 DJ |
12622 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12623 | error (_("Invalid parameters to remote put")); | |
12624 | ||
12625 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12626 | } |
12627 | ||
12628 | static void | |
ac88e2de | 12629 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12630 | { |
d1a41061 PP |
12631 | if (args == NULL) |
12632 | error_no_arg (_("file to get")); | |
12633 | ||
773a1edc | 12634 | gdb_argv argv (args); |
a6b151f1 DJ |
12635 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12636 | error (_("Invalid parameters to remote get")); | |
12637 | ||
12638 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12639 | } |
12640 | ||
12641 | static void | |
ac88e2de | 12642 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12643 | { |
d1a41061 PP |
12644 | if (args == NULL) |
12645 | error_no_arg (_("file to delete")); | |
12646 | ||
773a1edc | 12647 | gdb_argv argv (args); |
a6b151f1 DJ |
12648 | if (argv[0] == NULL || argv[1] != NULL) |
12649 | error (_("Invalid parameters to remote delete")); | |
12650 | ||
12651 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12652 | } |
12653 | ||
12654 | static void | |
981a3fb3 | 12655 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12656 | { |
635c7e8a | 12657 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12658 | } |
12659 | ||
57810aa7 | 12660 | bool |
f6ac5f3d | 12661 | remote_target::can_execute_reverse () |
b2175913 | 12662 | { |
4082afcc PA |
12663 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12664 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12665 | return true; |
40ab02ce | 12666 | else |
57810aa7 | 12667 | return false; |
b2175913 MS |
12668 | } |
12669 | ||
57810aa7 | 12670 | bool |
f6ac5f3d | 12671 | remote_target::supports_non_stop () |
74531fed | 12672 | { |
57810aa7 | 12673 | return true; |
74531fed PA |
12674 | } |
12675 | ||
57810aa7 | 12676 | bool |
f6ac5f3d | 12677 | remote_target::supports_disable_randomization () |
03583c20 UW |
12678 | { |
12679 | /* Only supported in extended mode. */ | |
57810aa7 | 12680 | return false; |
03583c20 UW |
12681 | } |
12682 | ||
57810aa7 | 12683 | bool |
f6ac5f3d | 12684 | remote_target::supports_multi_process () |
8a305172 PA |
12685 | { |
12686 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12687 | |
8020350c | 12688 | return remote_multi_process_p (rs); |
8a305172 PA |
12689 | } |
12690 | ||
70221824 | 12691 | static int |
f6ac5f3d | 12692 | remote_supports_cond_tracepoints () |
782b2b07 | 12693 | { |
4082afcc | 12694 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12695 | } |
12696 | ||
57810aa7 | 12697 | bool |
f6ac5f3d | 12698 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12699 | { |
4082afcc | 12700 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12701 | } |
12702 | ||
70221824 | 12703 | static int |
f6ac5f3d | 12704 | remote_supports_fast_tracepoints () |
7a697b8d | 12705 | { |
4082afcc | 12706 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12707 | } |
12708 | ||
0fb4aa4b | 12709 | static int |
f6ac5f3d | 12710 | remote_supports_static_tracepoints () |
0fb4aa4b | 12711 | { |
4082afcc | 12712 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12713 | } |
12714 | ||
1e4d1764 | 12715 | static int |
f6ac5f3d | 12716 | remote_supports_install_in_trace () |
1e4d1764 | 12717 | { |
4082afcc | 12718 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12719 | } |
12720 | ||
57810aa7 | 12721 | bool |
f6ac5f3d | 12722 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12723 | { |
4082afcc PA |
12724 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12725 | == PACKET_ENABLE); | |
d248b706 KY |
12726 | } |
12727 | ||
57810aa7 | 12728 | bool |
f6ac5f3d | 12729 | remote_target::supports_string_tracing () |
3065dfb6 | 12730 | { |
4082afcc | 12731 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12732 | } |
12733 | ||
57810aa7 | 12734 | bool |
f6ac5f3d | 12735 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12736 | { |
4082afcc | 12737 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12738 | } |
12739 | ||
f6ac5f3d PA |
12740 | void |
12741 | remote_target::trace_init () | |
35b1e5cc | 12742 | { |
b6bb3468 PA |
12743 | struct remote_state *rs = get_remote_state (); |
12744 | ||
35b1e5cc | 12745 | putpkt ("QTinit"); |
b6bb3468 | 12746 | remote_get_noisy_reply (); |
8d64371b | 12747 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
12748 | error (_("Target does not support this command.")); |
12749 | } | |
12750 | ||
409873ef SS |
12751 | /* Recursive routine to walk through command list including loops, and |
12752 | download packets for each command. */ | |
12753 | ||
6b8edb51 PA |
12754 | void |
12755 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
12756 | struct command_line *cmds) | |
409873ef SS |
12757 | { |
12758 | struct remote_state *rs = get_remote_state (); | |
12759 | struct command_line *cmd; | |
12760 | ||
12761 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12762 | { | |
0df8b418 | 12763 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12764 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12765 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
12766 | rs->buf.data () + strlen (rs->buf.data ()), |
12767 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12768 | putpkt (rs->buf); |
b6bb3468 | 12769 | remote_get_noisy_reply (); |
8d64371b | 12770 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12771 | warning (_("Target does not support source download.")); |
12772 | ||
12773 | if (cmd->control_type == while_control | |
12774 | || cmd->control_type == while_stepping_control) | |
12775 | { | |
12973681 | 12776 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12777 | |
0df8b418 | 12778 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12779 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12780 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
12781 | rs->buf.data () + strlen (rs->buf.data ()), |
12782 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12783 | putpkt (rs->buf); |
b6bb3468 | 12784 | remote_get_noisy_reply (); |
8d64371b | 12785 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12786 | warning (_("Target does not support source download.")); |
12787 | } | |
12788 | } | |
12789 | } | |
12790 | ||
f6ac5f3d PA |
12791 | void |
12792 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
12793 | { |
12794 | CORE_ADDR tpaddr; | |
409873ef | 12795 | char addrbuf[40]; |
b44ec619 SM |
12796 | std::vector<std::string> tdp_actions; |
12797 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12798 | char *pkt; |
e8ba3115 | 12799 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12800 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12801 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 12802 | int ret; |
ff36536c | 12803 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
12804 | size_t size_left; |
12805 | ||
12806 | /* We use a buffer other than rs->buf because we'll build strings | |
12807 | across multiple statements, and other statements in between could | |
12808 | modify rs->buf. */ | |
12809 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 12810 | |
dc673c81 | 12811 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12812 | |
12813 | tpaddr = loc->address; | |
12814 | sprintf_vma (addrbuf, tpaddr); | |
3df3a985 PFC |
12815 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
12816 | b->number, addrbuf, /* address */ | |
12817 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12818 | t->step_count, t->pass_count); | |
12819 | ||
12820 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12821 | error ("%s", err_msg); |
3df3a985 | 12822 | |
e8ba3115 YQ |
12823 | /* Fast tracepoints are mostly handled by the target, but we can |
12824 | tell the target how big of an instruction block should be moved | |
12825 | around. */ | |
12826 | if (b->type == bp_fast_tracepoint) | |
12827 | { | |
12828 | /* Only test for support at download time; we may not know | |
12829 | target capabilities at definition time. */ | |
12830 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12831 | { |
6b940e6a PL |
12832 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12833 | NULL)) | |
3df3a985 PFC |
12834 | { |
12835 | size_left = buf.size () - strlen (buf.data ()); | |
12836 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12837 | size_left, ":F%x", | |
12838 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
12839 | ||
12840 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12841 | error ("%s", err_msg); |
3df3a985 | 12842 | } |
35b1e5cc | 12843 | else |
e8ba3115 YQ |
12844 | /* If it passed validation at definition but fails now, |
12845 | something is very wrong. */ | |
12846 | internal_error (__FILE__, __LINE__, | |
12847 | _("Fast tracepoint not " | |
12848 | "valid during download")); | |
35b1e5cc | 12849 | } |
e8ba3115 YQ |
12850 | else |
12851 | /* Fast tracepoints are functionally identical to regular | |
12852 | tracepoints, so don't take lack of support as a reason to | |
12853 | give up on the trace run. */ | |
12854 | warning (_("Target does not support fast tracepoints, " | |
12855 | "downloading %d as regular tracepoint"), b->number); | |
12856 | } | |
12857 | else if (b->type == bp_static_tracepoint) | |
12858 | { | |
12859 | /* Only test for support at download time; we may not know | |
12860 | target capabilities at definition time. */ | |
12861 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12862 | { |
e8ba3115 | 12863 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12864 | |
e8ba3115 | 12865 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
12866 | { |
12867 | size_left = buf.size () - strlen (buf.data ()); | |
12868 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12869 | size_left, ":S"); | |
12870 | ||
12871 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12872 | error ("%s", err_msg); |
3df3a985 | 12873 | } |
0fb4aa4b | 12874 | else |
e8ba3115 | 12875 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12876 | } |
e8ba3115 YQ |
12877 | else |
12878 | /* Fast tracepoints are functionally identical to regular | |
12879 | tracepoints, so don't take lack of support as a reason | |
12880 | to give up on the trace run. */ | |
12881 | error (_("Target does not support static tracepoints")); | |
12882 | } | |
12883 | /* If the tracepoint has a conditional, make it into an agent | |
12884 | expression and append to the definition. */ | |
12885 | if (loc->cond) | |
12886 | { | |
12887 | /* Only test support at download time, we may not know target | |
12888 | capabilities at definition time. */ | |
12889 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12890 | { |
3df3a985 PFC |
12891 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
12892 | loc->cond.get ()); | |
12893 | ||
12894 | size_left = buf.size () - strlen (buf.data ()); | |
12895 | ||
12896 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12897 | size_left, ":X%x,", aexpr->len); | |
12898 | ||
12899 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12900 | error ("%s", err_msg); |
3df3a985 PFC |
12901 | |
12902 | size_left = buf.size () - strlen (buf.data ()); | |
12903 | ||
12904 | /* Two bytes to encode each aexpr byte, plus the terminating | |
12905 | null byte. */ | |
12906 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 12907 | error ("%s", err_msg); |
3df3a985 PFC |
12908 | |
12909 | pkt = buf.data () + strlen (buf.data ()); | |
12910 | ||
b44ec619 | 12911 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12912 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12913 | *pkt = '\0'; | |
35b1e5cc | 12914 | } |
e8ba3115 YQ |
12915 | else |
12916 | warning (_("Target does not support conditional tracepoints, " | |
12917 | "ignoring tp %d cond"), b->number); | |
12918 | } | |
35b1e5cc | 12919 | |
d9b3f62e | 12920 | if (b->commands || *default_collect) |
3df3a985 PFC |
12921 | { |
12922 | size_left = buf.size () - strlen (buf.data ()); | |
12923 | ||
12924 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12925 | size_left, "-"); | |
12926 | ||
12927 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12928 | error ("%s", err_msg); |
3df3a985 PFC |
12929 | } |
12930 | ||
12931 | putpkt (buf.data ()); | |
b6bb3468 | 12932 | remote_get_noisy_reply (); |
8d64371b | 12933 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 12934 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12935 | |
e8ba3115 | 12936 | /* do_single_steps (t); */ |
b44ec619 SM |
12937 | for (auto action_it = tdp_actions.begin (); |
12938 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12939 | { |
b44ec619 SM |
12940 | QUIT; /* Allow user to bail out with ^C. */ |
12941 | ||
aa6f3694 | 12942 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
12943 | || !stepping_actions.empty ()); |
12944 | ||
3df3a985 PFC |
12945 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
12946 | b->number, addrbuf, /* address */ | |
12947 | action_it->c_str (), | |
12948 | has_more ? '-' : 0); | |
12949 | ||
12950 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12951 | error ("%s", err_msg); |
3df3a985 PFC |
12952 | |
12953 | putpkt (buf.data ()); | |
b44ec619 | 12954 | remote_get_noisy_reply (); |
8d64371b | 12955 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 12956 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 12957 | } |
409873ef | 12958 | |
05abfc39 PFC |
12959 | for (auto action_it = stepping_actions.begin (); |
12960 | action_it != stepping_actions.end (); action_it++) | |
12961 | { | |
12962 | QUIT; /* Allow user to bail out with ^C. */ | |
12963 | ||
12964 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 12965 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 12966 | |
3df3a985 PFC |
12967 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
12968 | b->number, addrbuf, /* address */ | |
12969 | is_first ? "S" : "", | |
12970 | action_it->c_str (), | |
12971 | has_more ? "-" : ""); | |
12972 | ||
12973 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12974 | error ("%s", err_msg); |
3df3a985 PFC |
12975 | |
12976 | putpkt (buf.data ()); | |
05abfc39 | 12977 | remote_get_noisy_reply (); |
8d64371b | 12978 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
12979 | error (_("Error on target while setting tracepoints.")); |
12980 | } | |
b44ec619 | 12981 | |
4082afcc | 12982 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12983 | { |
f00aae0f | 12984 | if (b->location != NULL) |
409873ef | 12985 | { |
3df3a985 PFC |
12986 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
12987 | ||
12988 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12989 | error ("%s", err_msg); |
3df3a985 | 12990 | |
f00aae0f | 12991 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12992 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
12993 | buf.data () + strlen (buf.data ()), |
12994 | buf.size () - strlen (buf.data ())); | |
12995 | putpkt (buf.data ()); | |
b6bb3468 | 12996 | remote_get_noisy_reply (); |
8d64371b | 12997 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 12998 | warning (_("Target does not support source download.")); |
409873ef | 12999 | } |
e8ba3115 YQ |
13000 | if (b->cond_string) |
13001 | { | |
3df3a985 PFC |
13002 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13003 | ||
13004 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13005 | error ("%s", err_msg); |
3df3a985 | 13006 | |
e8ba3115 | 13007 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
13008 | "cond", b->cond_string, |
13009 | buf.data () + strlen (buf.data ()), | |
13010 | buf.size () - strlen (buf.data ())); | |
13011 | putpkt (buf.data ()); | |
b6bb3468 | 13012 | remote_get_noisy_reply (); |
8d64371b | 13013 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13014 | warning (_("Target does not support source download.")); |
13015 | } | |
13016 | remote_download_command_source (b->number, loc->address, | |
13017 | breakpoint_commands (b)); | |
35b1e5cc | 13018 | } |
35b1e5cc SS |
13019 | } |
13020 | ||
57810aa7 | 13021 | bool |
f6ac5f3d | 13022 | remote_target::can_download_tracepoint () |
1e4d1764 | 13023 | { |
1e51243a PA |
13024 | struct remote_state *rs = get_remote_state (); |
13025 | struct trace_status *ts; | |
13026 | int status; | |
13027 | ||
13028 | /* Don't try to install tracepoints until we've relocated our | |
13029 | symbols, and fetched and merged the target's tracepoint list with | |
13030 | ours. */ | |
13031 | if (rs->starting_up) | |
57810aa7 | 13032 | return false; |
1e51243a PA |
13033 | |
13034 | ts = current_trace_status (); | |
f6ac5f3d | 13035 | status = get_trace_status (ts); |
1e4d1764 YQ |
13036 | |
13037 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13038 | return false; |
1e4d1764 YQ |
13039 | |
13040 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13041 | installing tracepoint in trace, we have to return. */ | |
13042 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13043 | return false; |
1e4d1764 | 13044 | |
57810aa7 | 13045 | return true; |
1e4d1764 YQ |
13046 | } |
13047 | ||
13048 | ||
f6ac5f3d PA |
13049 | void |
13050 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13051 | { |
13052 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13053 | char *p; |
35b1e5cc | 13054 | |
8d64371b | 13055 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13056 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13057 | tsv.builtin); | |
8d64371b TT |
13058 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13059 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13060 | >= get_remote_packet_size ()) | |
00bf0b85 | 13061 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13062 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13063 | *p++ = '\0'; |
35b1e5cc | 13064 | putpkt (rs->buf); |
b6bb3468 | 13065 | remote_get_noisy_reply (); |
8d64371b | 13066 | if (rs->buf[0] == '\0') |
ad91cd99 | 13067 | error (_("Target does not support this command.")); |
8d64371b | 13068 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13069 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13070 | } |
13071 | ||
f6ac5f3d PA |
13072 | void |
13073 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13074 | { |
13075 | struct remote_state *rs = get_remote_state (); | |
13076 | char addr_buf[40]; | |
13077 | ||
13078 | sprintf_vma (addr_buf, location->address); | |
8d64371b | 13079 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
bba74b36 | 13080 | location->owner->number, addr_buf); |
d248b706 | 13081 | putpkt (rs->buf); |
b6bb3468 | 13082 | remote_get_noisy_reply (); |
8d64371b | 13083 | if (rs->buf[0] == '\0') |
d248b706 | 13084 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13085 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13086 | error (_("Error on target while enabling tracepoint.")); |
13087 | } | |
13088 | ||
f6ac5f3d PA |
13089 | void |
13090 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13091 | { |
13092 | struct remote_state *rs = get_remote_state (); | |
13093 | char addr_buf[40]; | |
13094 | ||
13095 | sprintf_vma (addr_buf, location->address); | |
8d64371b | 13096 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
bba74b36 | 13097 | location->owner->number, addr_buf); |
d248b706 | 13098 | putpkt (rs->buf); |
b6bb3468 | 13099 | remote_get_noisy_reply (); |
8d64371b | 13100 | if (rs->buf[0] == '\0') |
d248b706 | 13101 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13102 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13103 | error (_("Error on target while disabling tracepoint.")); |
13104 | } | |
13105 | ||
f6ac5f3d PA |
13106 | void |
13107 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13108 | { |
13109 | asection *s; | |
13110 | bfd_size_type size; | |
608bcef2 | 13111 | bfd_vma vma; |
35b1e5cc | 13112 | int anysecs = 0; |
c2fa21f1 | 13113 | int offset = 0; |
35b1e5cc SS |
13114 | |
13115 | if (!exec_bfd) | |
13116 | return; /* No information to give. */ | |
13117 | ||
b6bb3468 PA |
13118 | struct remote_state *rs = get_remote_state (); |
13119 | ||
8d64371b TT |
13120 | strcpy (rs->buf.data (), "QTro"); |
13121 | offset = strlen (rs->buf.data ()); | |
35b1e5cc SS |
13122 | for (s = exec_bfd->sections; s; s = s->next) |
13123 | { | |
13124 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13125 | int sec_length; |
35b1e5cc SS |
13126 | |
13127 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13128 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13129 | (s->flags & SEC_READONLY) == 0) |
13130 | continue; | |
13131 | ||
13132 | anysecs = 1; | |
fd361982 AM |
13133 | vma = bfd_section_vma (s); |
13134 | size = bfd_section_size (s); | |
608bcef2 HZ |
13135 | sprintf_vma (tmp1, vma); |
13136 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13137 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13138 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13139 | { |
4082afcc | 13140 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13141 | warning (_("\ |
c2fa21f1 HZ |
13142 | Too many sections for read-only sections definition packet.")); |
13143 | break; | |
13144 | } | |
8d64371b | 13145 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13146 | tmp1, tmp2); |
c2fa21f1 | 13147 | offset += sec_length; |
35b1e5cc SS |
13148 | } |
13149 | if (anysecs) | |
13150 | { | |
b6bb3468 | 13151 | putpkt (rs->buf); |
8d64371b | 13152 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13153 | } |
13154 | } | |
13155 | ||
f6ac5f3d PA |
13156 | void |
13157 | remote_target::trace_start () | |
35b1e5cc | 13158 | { |
b6bb3468 PA |
13159 | struct remote_state *rs = get_remote_state (); |
13160 | ||
35b1e5cc | 13161 | putpkt ("QTStart"); |
b6bb3468 | 13162 | remote_get_noisy_reply (); |
8d64371b | 13163 | if (rs->buf[0] == '\0') |
ad91cd99 | 13164 | error (_("Target does not support this command.")); |
8d64371b TT |
13165 | if (strcmp (rs->buf.data (), "OK") != 0) |
13166 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13167 | } |
13168 | ||
f6ac5f3d PA |
13169 | int |
13170 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13171 | { |
953b98d1 | 13172 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13173 | char *p = NULL; |
bd3eecc3 | 13174 | enum packet_result result; |
b6bb3468 | 13175 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13176 | |
4082afcc | 13177 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13178 | return -1; |
a744cf53 | 13179 | |
7b9a15e1 | 13180 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13181 | trace_regblock_size |
9d6eea31 | 13182 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13183 | |
049dc89b JK |
13184 | putpkt ("qTStatus"); |
13185 | ||
a70b8144 | 13186 | try |
67f41397 | 13187 | { |
b6bb3468 | 13188 | p = remote_get_noisy_reply (); |
67f41397 | 13189 | } |
230d2906 | 13190 | catch (const gdb_exception_error &ex) |
67f41397 | 13191 | { |
598d3636 JK |
13192 | if (ex.error != TARGET_CLOSE_ERROR) |
13193 | { | |
13194 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13195 | return -1; | |
13196 | } | |
eedc3f4f | 13197 | throw; |
67f41397 | 13198 | } |
00bf0b85 | 13199 | |
bd3eecc3 PA |
13200 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13201 | ||
00bf0b85 | 13202 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13203 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13204 | return -1; |
35b1e5cc | 13205 | |
00bf0b85 | 13206 | /* We're working with a live target. */ |
f5911ea1 | 13207 | ts->filename = NULL; |
00bf0b85 | 13208 | |
00bf0b85 | 13209 | if (*p++ != 'T') |
8d64371b | 13210 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13211 | |
84cebc4a YQ |
13212 | /* Function 'parse_trace_status' sets default value of each field of |
13213 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13214 | parse_trace_status (p, ts); |
13215 | ||
13216 | return ts->running; | |
35b1e5cc SS |
13217 | } |
13218 | ||
f6ac5f3d PA |
13219 | void |
13220 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13221 | struct uploaded_tp *utp) | |
f196051f SS |
13222 | { |
13223 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13224 | char *reply; |
13225 | struct bp_location *loc; | |
13226 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13227 | size_t size = get_remote_packet_size (); |
f196051f SS |
13228 | |
13229 | if (tp) | |
13230 | { | |
c1fc2657 | 13231 | tp->hit_count = 0; |
f196051f | 13232 | tp->traceframe_usage = 0; |
c1fc2657 | 13233 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13234 | { |
13235 | /* If the tracepoint was never downloaded, don't go asking for | |
13236 | any status. */ | |
13237 | if (tp->number_on_target == 0) | |
13238 | continue; | |
8d64371b | 13239 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13240 | phex_nz (loc->address, 0)); |
f196051f | 13241 | putpkt (rs->buf); |
b6bb3468 | 13242 | reply = remote_get_noisy_reply (); |
f196051f SS |
13243 | if (reply && *reply) |
13244 | { | |
13245 | if (*reply == 'V') | |
13246 | parse_tracepoint_status (reply + 1, bp, utp); | |
13247 | } | |
13248 | } | |
13249 | } | |
13250 | else if (utp) | |
13251 | { | |
13252 | utp->hit_count = 0; | |
13253 | utp->traceframe_usage = 0; | |
8d64371b | 13254 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13255 | phex_nz (utp->addr, 0)); |
f196051f | 13256 | putpkt (rs->buf); |
b6bb3468 | 13257 | reply = remote_get_noisy_reply (); |
f196051f SS |
13258 | if (reply && *reply) |
13259 | { | |
13260 | if (*reply == 'V') | |
13261 | parse_tracepoint_status (reply + 1, bp, utp); | |
13262 | } | |
13263 | } | |
13264 | } | |
13265 | ||
f6ac5f3d PA |
13266 | void |
13267 | remote_target::trace_stop () | |
35b1e5cc | 13268 | { |
b6bb3468 PA |
13269 | struct remote_state *rs = get_remote_state (); |
13270 | ||
35b1e5cc | 13271 | putpkt ("QTStop"); |
b6bb3468 | 13272 | remote_get_noisy_reply (); |
8d64371b | 13273 | if (rs->buf[0] == '\0') |
ad91cd99 | 13274 | error (_("Target does not support this command.")); |
8d64371b TT |
13275 | if (strcmp (rs->buf.data (), "OK") != 0) |
13276 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13277 | } |
13278 | ||
f6ac5f3d PA |
13279 | int |
13280 | remote_target::trace_find (enum trace_find_type type, int num, | |
13281 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13282 | int *tpp) | |
35b1e5cc SS |
13283 | { |
13284 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13285 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13286 | char *p, *reply; |
13287 | int target_frameno = -1, target_tracept = -1; | |
13288 | ||
e6e4e701 PA |
13289 | /* Lookups other than by absolute frame number depend on the current |
13290 | trace selected, so make sure it is correct on the remote end | |
13291 | first. */ | |
13292 | if (type != tfind_number) | |
13293 | set_remote_traceframe (); | |
13294 | ||
8d64371b | 13295 | p = rs->buf.data (); |
35b1e5cc SS |
13296 | strcpy (p, "QTFrame:"); |
13297 | p = strchr (p, '\0'); | |
13298 | switch (type) | |
13299 | { | |
13300 | case tfind_number: | |
bba74b36 | 13301 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13302 | break; |
13303 | case tfind_pc: | |
bba74b36 | 13304 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13305 | break; |
13306 | case tfind_tp: | |
bba74b36 | 13307 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13308 | break; |
13309 | case tfind_range: | |
bba74b36 YQ |
13310 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13311 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13312 | break; |
13313 | case tfind_outside: | |
bba74b36 YQ |
13314 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13315 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13316 | break; |
13317 | default: | |
9b20d036 | 13318 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13319 | } |
13320 | ||
13321 | putpkt (rs->buf); | |
b6bb3468 | 13322 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13323 | if (*reply == '\0') |
13324 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13325 | |
13326 | while (reply && *reply) | |
13327 | switch (*reply) | |
13328 | { | |
13329 | case 'F': | |
f197e0f1 VP |
13330 | p = ++reply; |
13331 | target_frameno = (int) strtol (p, &reply, 16); | |
13332 | if (reply == p) | |
13333 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13334 | /* Don't update our remote traceframe number cache on failure |
13335 | to select a remote traceframe. */ | |
f197e0f1 VP |
13336 | if (target_frameno == -1) |
13337 | return -1; | |
35b1e5cc SS |
13338 | break; |
13339 | case 'T': | |
f197e0f1 VP |
13340 | p = ++reply; |
13341 | target_tracept = (int) strtol (p, &reply, 16); | |
13342 | if (reply == p) | |
13343 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13344 | break; |
13345 | case 'O': /* "OK"? */ | |
13346 | if (reply[1] == 'K' && reply[2] == '\0') | |
13347 | reply += 2; | |
13348 | else | |
13349 | error (_("Bogus reply from target: %s"), reply); | |
13350 | break; | |
13351 | default: | |
13352 | error (_("Bogus reply from target: %s"), reply); | |
13353 | } | |
13354 | if (tpp) | |
13355 | *tpp = target_tracept; | |
e6e4e701 | 13356 | |
262e1174 | 13357 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13358 | return target_frameno; |
13359 | } | |
13360 | ||
57810aa7 | 13361 | bool |
f6ac5f3d | 13362 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13363 | { |
13364 | struct remote_state *rs = get_remote_state (); | |
13365 | char *reply; | |
13366 | ULONGEST uval; | |
13367 | ||
e6e4e701 PA |
13368 | set_remote_traceframe (); |
13369 | ||
8d64371b | 13370 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13371 | putpkt (rs->buf); |
b6bb3468 | 13372 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13373 | if (reply && *reply) |
13374 | { | |
13375 | if (*reply == 'V') | |
13376 | { | |
13377 | unpack_varlen_hex (reply + 1, &uval); | |
13378 | *val = (LONGEST) uval; | |
57810aa7 | 13379 | return true; |
35b1e5cc SS |
13380 | } |
13381 | } | |
57810aa7 | 13382 | return false; |
35b1e5cc SS |
13383 | } |
13384 | ||
f6ac5f3d PA |
13385 | int |
13386 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13387 | { |
13388 | struct remote_state *rs = get_remote_state (); | |
13389 | char *p, *reply; | |
13390 | ||
8d64371b | 13391 | p = rs->buf.data (); |
00bf0b85 SS |
13392 | strcpy (p, "QTSave:"); |
13393 | p += strlen (p); | |
8d64371b TT |
13394 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13395 | >= get_remote_packet_size ()) | |
00bf0b85 | 13396 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13397 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13398 | *p++ = '\0'; |
13399 | putpkt (rs->buf); | |
b6bb3468 | 13400 | reply = remote_get_noisy_reply (); |
d6c5869f | 13401 | if (*reply == '\0') |
ad91cd99 PA |
13402 | error (_("Target does not support this command.")); |
13403 | if (strcmp (reply, "OK") != 0) | |
13404 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13405 | return 0; |
13406 | } | |
13407 | ||
13408 | /* This is basically a memory transfer, but needs to be its own packet | |
13409 | because we don't know how the target actually organizes its trace | |
13410 | memory, plus we want to be able to ask for as much as possible, but | |
13411 | not be unhappy if we don't get as much as we ask for. */ | |
13412 | ||
f6ac5f3d PA |
13413 | LONGEST |
13414 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13415 | { |
13416 | struct remote_state *rs = get_remote_state (); | |
13417 | char *reply; | |
13418 | char *p; | |
13419 | int rslt; | |
13420 | ||
8d64371b | 13421 | p = rs->buf.data (); |
00bf0b85 SS |
13422 | strcpy (p, "qTBuffer:"); |
13423 | p += strlen (p); | |
13424 | p += hexnumstr (p, offset); | |
13425 | *p++ = ','; | |
13426 | p += hexnumstr (p, len); | |
13427 | *p++ = '\0'; | |
13428 | ||
13429 | putpkt (rs->buf); | |
b6bb3468 | 13430 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13431 | if (reply && *reply) |
13432 | { | |
13433 | /* 'l' by itself means we're at the end of the buffer and | |
13434 | there is nothing more to get. */ | |
13435 | if (*reply == 'l') | |
13436 | return 0; | |
13437 | ||
13438 | /* Convert the reply into binary. Limit the number of bytes to | |
13439 | convert according to our passed-in buffer size, rather than | |
13440 | what was returned in the packet; if the target is | |
13441 | unexpectedly generous and gives us a bigger reply than we | |
13442 | asked for, we don't want to crash. */ | |
b6bb3468 | 13443 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13444 | return rslt; |
13445 | } | |
13446 | ||
13447 | /* Something went wrong, flag as an error. */ | |
13448 | return -1; | |
13449 | } | |
13450 | ||
f6ac5f3d PA |
13451 | void |
13452 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13453 | { |
13454 | struct remote_state *rs = get_remote_state (); | |
13455 | ||
4082afcc | 13456 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13457 | { |
ad91cd99 PA |
13458 | char *reply; |
13459 | ||
8d64371b TT |
13460 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13461 | "QTDisconnected:%x", val); | |
33da3f1c | 13462 | putpkt (rs->buf); |
b6bb3468 | 13463 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13464 | if (*reply == '\0') |
33da3f1c | 13465 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13466 | if (strcmp (reply, "OK") != 0) |
13467 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13468 | } |
13469 | else if (val) | |
13470 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13471 | } |
13472 | ||
f6ac5f3d PA |
13473 | int |
13474 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13475 | { |
5b6d1e4f | 13476 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13477 | |
7aabaf9d SM |
13478 | if (info != NULL && info->priv != NULL) |
13479 | return get_remote_thread_info (info)->core; | |
13480 | ||
dc146f7c VP |
13481 | return -1; |
13482 | } | |
13483 | ||
f6ac5f3d PA |
13484 | void |
13485 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13486 | { |
13487 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13488 | char *reply; |
4daf5ac0 | 13489 | |
8d64371b TT |
13490 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13491 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13492 | putpkt (rs->buf); |
b6bb3468 | 13493 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13494 | if (*reply == '\0') |
4daf5ac0 | 13495 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13496 | if (strcmp (reply, "OK") != 0) |
13497 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13498 | } |
13499 | ||
f6ac5f3d PA |
13500 | traceframe_info_up |
13501 | remote_target::traceframe_info () | |
b3b9301e | 13502 | { |
9018be22 | 13503 | gdb::optional<gdb::char_vector> text |
8b88a78e | 13504 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13505 | NULL); |
9018be22 SM |
13506 | if (text) |
13507 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13508 | |
13509 | return NULL; | |
13510 | } | |
13511 | ||
405f8e94 SS |
13512 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13513 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13514 | if the packet is not supported, and 0 if the minimum instruction | |
13515 | length is unknown. */ | |
13516 | ||
f6ac5f3d PA |
13517 | int |
13518 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13519 | { |
13520 | struct remote_state *rs = get_remote_state (); | |
13521 | char *reply; | |
13522 | ||
e886a173 PA |
13523 | /* If we're not debugging a process yet, the IPA can't be |
13524 | loaded. */ | |
13525 | if (!target_has_execution) | |
13526 | return 0; | |
13527 | ||
13528 | /* Make sure the remote is pointing at the right process. */ | |
13529 | set_general_process (); | |
13530 | ||
8d64371b | 13531 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13532 | putpkt (rs->buf); |
b6bb3468 | 13533 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13534 | if (*reply == '\0') |
13535 | return -1; | |
13536 | else | |
13537 | { | |
13538 | ULONGEST min_insn_len; | |
13539 | ||
13540 | unpack_varlen_hex (reply, &min_insn_len); | |
13541 | ||
13542 | return (int) min_insn_len; | |
13543 | } | |
13544 | } | |
13545 | ||
f6ac5f3d PA |
13546 | void |
13547 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13548 | { |
4082afcc | 13549 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13550 | { |
13551 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13552 | char *buf = rs->buf.data (); |
13553 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13554 | enum packet_result result; |
13555 | ||
13556 | gdb_assert (val >= 0 || val == -1); | |
13557 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13558 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13559 | if (val < 0) | |
13560 | { | |
13561 | *buf++ = '-'; | |
13562 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13563 | } | |
13564 | else | |
13565 | buf += hexnumstr (buf, (ULONGEST) val); | |
13566 | ||
13567 | putpkt (rs->buf); | |
b6bb3468 | 13568 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13569 | result = packet_ok (rs->buf, |
13570 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13571 | ||
13572 | if (result != PACKET_OK) | |
8d64371b | 13573 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13574 | } |
13575 | } | |
13576 | ||
57810aa7 | 13577 | bool |
f6ac5f3d PA |
13578 | remote_target::set_trace_notes (const char *user, const char *notes, |
13579 | const char *stop_notes) | |
f196051f SS |
13580 | { |
13581 | struct remote_state *rs = get_remote_state (); | |
13582 | char *reply; | |
8d64371b TT |
13583 | char *buf = rs->buf.data (); |
13584 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13585 | int nbytes; |
13586 | ||
13587 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13588 | if (user) | |
13589 | { | |
13590 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13591 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13592 | buf += 2 * nbytes; |
13593 | *buf++ = ';'; | |
13594 | } | |
13595 | if (notes) | |
13596 | { | |
13597 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13598 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13599 | buf += 2 * nbytes; |
13600 | *buf++ = ';'; | |
13601 | } | |
13602 | if (stop_notes) | |
13603 | { | |
13604 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13605 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13606 | buf += 2 * nbytes; |
13607 | *buf++ = ';'; | |
13608 | } | |
13609 | /* Ensure the buffer is terminated. */ | |
13610 | *buf = '\0'; | |
13611 | ||
13612 | putpkt (rs->buf); | |
b6bb3468 | 13613 | reply = remote_get_noisy_reply (); |
f196051f | 13614 | if (*reply == '\0') |
57810aa7 | 13615 | return false; |
f196051f SS |
13616 | |
13617 | if (strcmp (reply, "OK") != 0) | |
13618 | error (_("Bogus reply from target: %s"), reply); | |
13619 | ||
57810aa7 | 13620 | return true; |
f196051f SS |
13621 | } |
13622 | ||
57810aa7 PA |
13623 | bool |
13624 | remote_target::use_agent (bool use) | |
d1feda86 | 13625 | { |
4082afcc | 13626 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13627 | { |
13628 | struct remote_state *rs = get_remote_state (); | |
13629 | ||
13630 | /* If the stub supports QAgent. */ | |
8d64371b | 13631 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13632 | putpkt (rs->buf); |
8d64371b | 13633 | getpkt (&rs->buf, 0); |
d1feda86 | 13634 | |
8d64371b | 13635 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13636 | { |
f6ac5f3d | 13637 | ::use_agent = use; |
57810aa7 | 13638 | return true; |
d1feda86 YQ |
13639 | } |
13640 | } | |
13641 | ||
57810aa7 | 13642 | return false; |
d1feda86 YQ |
13643 | } |
13644 | ||
57810aa7 | 13645 | bool |
f6ac5f3d | 13646 | remote_target::can_use_agent () |
d1feda86 | 13647 | { |
4082afcc | 13648 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13649 | } |
13650 | ||
9accd112 MM |
13651 | struct btrace_target_info |
13652 | { | |
13653 | /* The ptid of the traced thread. */ | |
13654 | ptid_t ptid; | |
f4abbc16 MM |
13655 | |
13656 | /* The obtained branch trace configuration. */ | |
13657 | struct btrace_config conf; | |
9accd112 MM |
13658 | }; |
13659 | ||
f4abbc16 MM |
13660 | /* Reset our idea of our target's btrace configuration. */ |
13661 | ||
13662 | static void | |
6b8edb51 | 13663 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13664 | { |
f4abbc16 MM |
13665 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13666 | } | |
13667 | ||
f4abbc16 MM |
13668 | /* Synchronize the configuration with the target. */ |
13669 | ||
6b8edb51 PA |
13670 | void |
13671 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13672 | { |
d33501a5 MM |
13673 | struct packet_config *packet; |
13674 | struct remote_state *rs; | |
13675 | char *buf, *pos, *endbuf; | |
13676 | ||
13677 | rs = get_remote_state (); | |
8d64371b | 13678 | buf = rs->buf.data (); |
d33501a5 MM |
13679 | endbuf = buf + get_remote_packet_size (); |
13680 | ||
13681 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13682 | if (packet_config_support (packet) == PACKET_ENABLE | |
13683 | && conf->bts.size != rs->btrace_config.bts.size) | |
13684 | { | |
13685 | pos = buf; | |
13686 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13687 | conf->bts.size); | |
13688 | ||
13689 | putpkt (buf); | |
8d64371b | 13690 | getpkt (&rs->buf, 0); |
d33501a5 MM |
13691 | |
13692 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13693 | { | |
13694 | if (buf[0] == 'E' && buf[1] == '.') | |
13695 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13696 | else | |
13697 | error (_("Failed to configure the BTS buffer size.")); | |
13698 | } | |
13699 | ||
13700 | rs->btrace_config.bts.size = conf->bts.size; | |
13701 | } | |
b20a6524 MM |
13702 | |
13703 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13704 | if (packet_config_support (packet) == PACKET_ENABLE | |
13705 | && conf->pt.size != rs->btrace_config.pt.size) | |
13706 | { | |
13707 | pos = buf; | |
13708 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13709 | conf->pt.size); | |
13710 | ||
13711 | putpkt (buf); | |
8d64371b | 13712 | getpkt (&rs->buf, 0); |
b20a6524 MM |
13713 | |
13714 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13715 | { | |
13716 | if (buf[0] == 'E' && buf[1] == '.') | |
13717 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13718 | else | |
13719 | error (_("Failed to configure the trace buffer size.")); | |
13720 | } | |
13721 | ||
13722 | rs->btrace_config.pt.size = conf->pt.size; | |
13723 | } | |
f4abbc16 MM |
13724 | } |
13725 | ||
13726 | /* Read the current thread's btrace configuration from the target and | |
13727 | store it into CONF. */ | |
13728 | ||
13729 | static void | |
13730 | btrace_read_config (struct btrace_config *conf) | |
13731 | { | |
9018be22 | 13732 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13733 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13734 | if (xml) |
13735 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13736 | } |
13737 | ||
c0272db5 TW |
13738 | /* Maybe reopen target btrace. */ |
13739 | ||
6b8edb51 PA |
13740 | void |
13741 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
13742 | { |
13743 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 13744 | int btrace_target_pushed = 0; |
15766370 | 13745 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 13746 | int warned = 0; |
15766370 | 13747 | #endif |
c0272db5 | 13748 | |
aedbe3bb CM |
13749 | /* Don't bother walking the entirety of the remote thread list when |
13750 | we know the feature isn't supported by the remote. */ | |
13751 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
13752 | return; | |
13753 | ||
5ed8105e PA |
13754 | scoped_restore_current_thread restore_thread; |
13755 | ||
5b6d1e4f | 13756 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 TW |
13757 | { |
13758 | set_general_thread (tp->ptid); | |
13759 | ||
13760 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13761 | btrace_read_config (&rs->btrace_config); | |
13762 | ||
13763 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13764 | continue; | |
13765 | ||
13766 | #if !defined (HAVE_LIBIPT) | |
13767 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13768 | { | |
13769 | if (!warned) | |
13770 | { | |
13771 | warned = 1; | |
c4e12631 MM |
13772 | warning (_("Target is recording using Intel Processor Trace " |
13773 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13774 | } |
13775 | ||
13776 | continue; | |
13777 | } | |
13778 | #endif /* !defined (HAVE_LIBIPT) */ | |
13779 | ||
13780 | /* Push target, once, but before anything else happens. This way our | |
13781 | changes to the threads will be cleaned up by unpushing the target | |
13782 | in case btrace_read_config () throws. */ | |
13783 | if (!btrace_target_pushed) | |
13784 | { | |
13785 | btrace_target_pushed = 1; | |
13786 | record_btrace_push_target (); | |
13787 | printf_filtered (_("Target is recording using %s.\n"), | |
13788 | btrace_format_string (rs->btrace_config.format)); | |
13789 | } | |
13790 | ||
13791 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13792 | tp->btrace.target->ptid = tp->ptid; | |
13793 | tp->btrace.target->conf = rs->btrace_config; | |
13794 | } | |
c0272db5 TW |
13795 | } |
13796 | ||
9accd112 MM |
13797 | /* Enable branch tracing. */ |
13798 | ||
f6ac5f3d PA |
13799 | struct btrace_target_info * |
13800 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13801 | { |
13802 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13803 | struct packet_config *packet = NULL; |
9accd112 | 13804 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
13805 | char *buf = rs->buf.data (); |
13806 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13807 | |
b20a6524 MM |
13808 | switch (conf->format) |
13809 | { | |
13810 | case BTRACE_FORMAT_BTS: | |
13811 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13812 | break; | |
13813 | ||
13814 | case BTRACE_FORMAT_PT: | |
13815 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13816 | break; | |
13817 | } | |
13818 | ||
13819 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13820 | error (_("Target does not support branch tracing.")); |
13821 | ||
f4abbc16 MM |
13822 | btrace_sync_conf (conf); |
13823 | ||
9accd112 MM |
13824 | set_general_thread (ptid); |
13825 | ||
13826 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13827 | putpkt (rs->buf); | |
8d64371b | 13828 | getpkt (&rs->buf, 0); |
9accd112 MM |
13829 | |
13830 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13831 | { | |
13832 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13833 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 13834 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
13835 | else |
13836 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 13837 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
13838 | } |
13839 | ||
8d749320 | 13840 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13841 | tinfo->ptid = ptid; |
13842 | ||
f4abbc16 MM |
13843 | /* If we fail to read the configuration, we lose some information, but the |
13844 | tracing itself is not impacted. */ | |
a70b8144 | 13845 | try |
492d29ea PA |
13846 | { |
13847 | btrace_read_config (&tinfo->conf); | |
13848 | } | |
230d2906 | 13849 | catch (const gdb_exception_error &err) |
492d29ea PA |
13850 | { |
13851 | if (err.message != NULL) | |
3d6e9d23 | 13852 | warning ("%s", err.what ()); |
492d29ea | 13853 | } |
f4abbc16 | 13854 | |
9accd112 MM |
13855 | return tinfo; |
13856 | } | |
13857 | ||
13858 | /* Disable branch tracing. */ | |
13859 | ||
f6ac5f3d PA |
13860 | void |
13861 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13862 | { |
13863 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13864 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13865 | char *buf = rs->buf.data (); |
13866 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13867 | |
4082afcc | 13868 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13869 | error (_("Target does not support branch tracing.")); |
13870 | ||
13871 | set_general_thread (tinfo->ptid); | |
13872 | ||
13873 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13874 | putpkt (rs->buf); | |
8d64371b | 13875 | getpkt (&rs->buf, 0); |
9accd112 MM |
13876 | |
13877 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13878 | { | |
13879 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13880 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 13881 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
13882 | else |
13883 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 13884 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
13885 | } |
13886 | ||
13887 | xfree (tinfo); | |
13888 | } | |
13889 | ||
13890 | /* Teardown branch tracing. */ | |
13891 | ||
f6ac5f3d PA |
13892 | void |
13893 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13894 | { |
13895 | /* We must not talk to the target during teardown. */ | |
13896 | xfree (tinfo); | |
13897 | } | |
13898 | ||
13899 | /* Read the branch trace. */ | |
13900 | ||
f6ac5f3d PA |
13901 | enum btrace_error |
13902 | remote_target::read_btrace (struct btrace_data *btrace, | |
13903 | struct btrace_target_info *tinfo, | |
13904 | enum btrace_read_type type) | |
9accd112 MM |
13905 | { |
13906 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13907 | const char *annex; |
9accd112 | 13908 | |
4082afcc | 13909 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13910 | error (_("Target does not support branch tracing.")); |
13911 | ||
13912 | #if !defined(HAVE_LIBEXPAT) | |
13913 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13914 | #endif | |
13915 | ||
13916 | switch (type) | |
13917 | { | |
864089d2 | 13918 | case BTRACE_READ_ALL: |
9accd112 MM |
13919 | annex = "all"; |
13920 | break; | |
864089d2 | 13921 | case BTRACE_READ_NEW: |
9accd112 MM |
13922 | annex = "new"; |
13923 | break; | |
969c39fb MM |
13924 | case BTRACE_READ_DELTA: |
13925 | annex = "delta"; | |
13926 | break; | |
9accd112 MM |
13927 | default: |
13928 | internal_error (__FILE__, __LINE__, | |
13929 | _("Bad branch tracing read type: %u."), | |
13930 | (unsigned int) type); | |
13931 | } | |
13932 | ||
9018be22 | 13933 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13934 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13935 | if (!xml) |
969c39fb | 13936 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13937 | |
9018be22 | 13938 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13939 | |
969c39fb | 13940 | return BTRACE_ERR_NONE; |
9accd112 MM |
13941 | } |
13942 | ||
f6ac5f3d PA |
13943 | const struct btrace_config * |
13944 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
13945 | { |
13946 | return &tinfo->conf; | |
13947 | } | |
13948 | ||
57810aa7 | 13949 | bool |
f6ac5f3d | 13950 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 13951 | { |
4082afcc PA |
13952 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13953 | == PACKET_ENABLE); | |
ced63ec0 GB |
13954 | } |
13955 | ||
9dd130a0 TT |
13956 | /* Implementation of to_load. */ |
13957 | ||
f6ac5f3d PA |
13958 | void |
13959 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
13960 | { |
13961 | generic_load (name, from_tty); | |
13962 | } | |
13963 | ||
c78fa86a GB |
13964 | /* Accepts an integer PID; returns a string representing a file that |
13965 | can be opened on the remote side to get the symbols for the child | |
13966 | process. Returns NULL if the operation is not supported. */ | |
13967 | ||
f6ac5f3d PA |
13968 | char * |
13969 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 13970 | { |
9018be22 | 13971 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 13972 | char *annex = NULL; |
c78fa86a GB |
13973 | |
13974 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13975 | return NULL; | |
13976 | ||
5b6d1e4f | 13977 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
13978 | if (inf == NULL) |
13979 | internal_error (__FILE__, __LINE__, | |
13980 | _("not currently attached to process %d"), pid); | |
13981 | ||
13982 | if (!inf->fake_pid_p) | |
13983 | { | |
13984 | const int annex_size = 9; | |
13985 | ||
224c3ddb | 13986 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13987 | xsnprintf (annex, annex_size, "%x", pid); |
13988 | } | |
13989 | ||
8b88a78e | 13990 | filename = target_read_stralloc (current_top_target (), |
c78fa86a GB |
13991 | TARGET_OBJECT_EXEC_FILE, annex); |
13992 | ||
9018be22 | 13993 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
13994 | } |
13995 | ||
750ce8d1 YQ |
13996 | /* Implement the to_can_do_single_step target_ops method. */ |
13997 | ||
f6ac5f3d PA |
13998 | int |
13999 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14000 | { |
14001 | /* We can only tell whether target supports single step or not by | |
14002 | supported s and S vCont actions if the stub supports vContSupported | |
14003 | feature. If the stub doesn't support vContSupported feature, | |
14004 | we have conservatively to think target doesn't supports single | |
14005 | step. */ | |
14006 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14007 | { | |
14008 | struct remote_state *rs = get_remote_state (); | |
14009 | ||
14010 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14011 | remote_vcont_probe (); |
750ce8d1 YQ |
14012 | |
14013 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14014 | } | |
14015 | else | |
14016 | return 0; | |
14017 | } | |
14018 | ||
3a00c802 PA |
14019 | /* Implementation of the to_execution_direction method for the remote |
14020 | target. */ | |
14021 | ||
f6ac5f3d PA |
14022 | enum exec_direction_kind |
14023 | remote_target::execution_direction () | |
3a00c802 PA |
14024 | { |
14025 | struct remote_state *rs = get_remote_state (); | |
14026 | ||
14027 | return rs->last_resume_exec_dir; | |
14028 | } | |
14029 | ||
f6327dcb KB |
14030 | /* Return pointer to the thread_info struct which corresponds to |
14031 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14032 | ||
f6ac5f3d PA |
14033 | thread_info * |
14034 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14035 | int handle_len, | |
14036 | inferior *inf) | |
f6327dcb | 14037 | { |
5b6d1e4f | 14038 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14039 | { |
7aabaf9d | 14040 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14041 | |
14042 | if (tp->inf == inf && priv != NULL) | |
14043 | { | |
7aabaf9d | 14044 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14045 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
14046 | handle_len, priv->thread_handle.size ()); |
14047 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
14048 | handle_len) == 0) |
14049 | return tp; | |
14050 | } | |
14051 | } | |
14052 | ||
14053 | return NULL; | |
14054 | } | |
14055 | ||
3d6c6204 KB |
14056 | gdb::byte_vector |
14057 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14058 | { | |
14059 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14060 | return priv->thread_handle; | |
14061 | } | |
14062 | ||
57810aa7 | 14063 | bool |
f6ac5f3d | 14064 | remote_target::can_async_p () |
6426a772 | 14065 | { |
5d93a237 TT |
14066 | struct remote_state *rs = get_remote_state (); |
14067 | ||
3015c064 SM |
14068 | /* We don't go async if the user has explicitly prevented it with the |
14069 | "maint set target-async" command. */ | |
c6ebd6cf | 14070 | if (!target_async_permitted) |
57810aa7 | 14071 | return false; |
75c99385 | 14072 | |
23860348 | 14073 | /* We're async whenever the serial device is. */ |
5d93a237 | 14074 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14075 | } |
14076 | ||
57810aa7 | 14077 | bool |
f6ac5f3d | 14078 | remote_target::is_async_p () |
6426a772 | 14079 | { |
5d93a237 TT |
14080 | struct remote_state *rs = get_remote_state (); |
14081 | ||
c6ebd6cf | 14082 | if (!target_async_permitted) |
75c99385 | 14083 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14084 | return false; |
75c99385 | 14085 | |
23860348 | 14086 | /* We're async whenever the serial device is. */ |
5d93a237 | 14087 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14088 | } |
14089 | ||
2acceee2 JM |
14090 | /* Pass the SERIAL event on and up to the client. One day this code |
14091 | will be able to delay notifying the client of an event until the | |
23860348 | 14092 | point where an entire packet has been received. */ |
2acceee2 | 14093 | |
2acceee2 JM |
14094 | static serial_event_ftype remote_async_serial_handler; |
14095 | ||
6426a772 | 14096 | static void |
819cc324 | 14097 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14098 | { |
2acceee2 JM |
14099 | /* Don't propogate error information up to the client. Instead let |
14100 | the client find out about the error by querying the target. */ | |
6a3753b3 | 14101 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
14102 | } |
14103 | ||
74531fed PA |
14104 | static void |
14105 | remote_async_inferior_event_handler (gdb_client_data data) | |
14106 | { | |
6b8edb51 | 14107 | inferior_event_handler (INF_REG_EVENT, data); |
74531fed PA |
14108 | } |
14109 | ||
5b6d1e4f PA |
14110 | int |
14111 | remote_target::async_wait_fd () | |
14112 | { | |
14113 | struct remote_state *rs = get_remote_state (); | |
14114 | return rs->remote_desc->fd; | |
14115 | } | |
14116 | ||
f6ac5f3d PA |
14117 | void |
14118 | remote_target::async (int enable) | |
2acceee2 | 14119 | { |
5d93a237 TT |
14120 | struct remote_state *rs = get_remote_state (); |
14121 | ||
6a3753b3 | 14122 | if (enable) |
2acceee2 | 14123 | { |
88b496c3 | 14124 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14125 | |
14126 | /* If there are pending events in the stop reply queue tell the | |
14127 | event loop to process them. */ | |
953edf2b | 14128 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14129 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14130 | /* For simplicity, below we clear the pending events token |
14131 | without remembering whether it is marked, so here we always | |
14132 | mark it. If there's actually no pending notification to | |
14133 | process, this ends up being a no-op (other than a spurious | |
14134 | event-loop wakeup). */ | |
14135 | if (target_is_non_stop_p ()) | |
14136 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14137 | } |
14138 | else | |
b7d2e916 PA |
14139 | { |
14140 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14141 | /* If the core is disabling async, it doesn't want to be |
14142 | disturbed with target events. Clear all async event sources | |
14143 | too. */ | |
6b8edb51 | 14144 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14145 | if (target_is_non_stop_p ()) |
14146 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14147 | } |
6426a772 JM |
14148 | } |
14149 | ||
65706a29 PA |
14150 | /* Implementation of the to_thread_events method. */ |
14151 | ||
f6ac5f3d PA |
14152 | void |
14153 | remote_target::thread_events (int enable) | |
65706a29 PA |
14154 | { |
14155 | struct remote_state *rs = get_remote_state (); | |
14156 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14157 | |
14158 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14159 | return; | |
14160 | ||
8d64371b | 14161 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14162 | putpkt (rs->buf); |
8d64371b | 14163 | getpkt (&rs->buf, 0); |
65706a29 PA |
14164 | |
14165 | switch (packet_ok (rs->buf, | |
14166 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14167 | { | |
14168 | case PACKET_OK: | |
8d64371b TT |
14169 | if (strcmp (rs->buf.data (), "OK") != 0) |
14170 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14171 | break; |
14172 | case PACKET_ERROR: | |
8d64371b | 14173 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14174 | break; |
14175 | case PACKET_UNKNOWN: | |
14176 | break; | |
14177 | } | |
14178 | } | |
14179 | ||
5a2468f5 | 14180 | static void |
981a3fb3 | 14181 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 14182 | { |
635c7e8a | 14183 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
14184 | } |
14185 | ||
d471ea57 | 14186 | static void |
981a3fb3 | 14187 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14188 | { |
37a105a1 | 14189 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14190 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14191 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14192 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14193 | |
2e783024 | 14194 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14195 | for (; list != NULL; list = list->next) |
14196 | if (strcmp (list->name, "Z-packet") == 0) | |
14197 | continue; | |
427c3a89 DJ |
14198 | else if (list->type == not_set_cmd) |
14199 | /* Alias commands are exactly like the original, except they | |
14200 | don't have the normal type. */ | |
14201 | continue; | |
14202 | else | |
37a105a1 | 14203 | { |
2e783024 | 14204 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14205 | |
112e8700 SM |
14206 | uiout->field_string ("name", list->name); |
14207 | uiout->text (": "); | |
427c3a89 | 14208 | if (list->type == show_cmd) |
f5c4fcd9 | 14209 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14210 | else |
14211 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14212 | } |
d471ea57 | 14213 | } |
5a2468f5 | 14214 | |
0f71a2f6 | 14215 | |
23860348 | 14216 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14217 | static void |
14218 | remote_new_objfile (struct objfile *objfile) | |
14219 | { | |
6b8edb51 | 14220 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14221 | |
6b8edb51 PA |
14222 | if (remote != NULL) /* Have a remote connection. */ |
14223 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14224 | } |
14225 | ||
00bf0b85 SS |
14226 | /* Pull all the tracepoints defined on the target and create local |
14227 | data structures representing them. We don't want to create real | |
14228 | tracepoints yet, we don't want to mess up the user's existing | |
14229 | collection. */ | |
14230 | ||
f6ac5f3d PA |
14231 | int |
14232 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14233 | { |
00bf0b85 SS |
14234 | struct remote_state *rs = get_remote_state (); |
14235 | char *p; | |
d5551862 | 14236 | |
00bf0b85 SS |
14237 | /* Ask for a first packet of tracepoint definition. */ |
14238 | putpkt ("qTfP"); | |
8d64371b TT |
14239 | getpkt (&rs->buf, 0); |
14240 | p = rs->buf.data (); | |
00bf0b85 | 14241 | while (*p && *p != 'l') |
d5551862 | 14242 | { |
00bf0b85 SS |
14243 | parse_tracepoint_definition (p, utpp); |
14244 | /* Ask for another packet of tracepoint definition. */ | |
14245 | putpkt ("qTsP"); | |
8d64371b TT |
14246 | getpkt (&rs->buf, 0); |
14247 | p = rs->buf.data (); | |
d5551862 | 14248 | } |
00bf0b85 | 14249 | return 0; |
d5551862 SS |
14250 | } |
14251 | ||
f6ac5f3d PA |
14252 | int |
14253 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14254 | { |
00bf0b85 | 14255 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14256 | char *p; |
d5551862 | 14257 | |
00bf0b85 SS |
14258 | /* Ask for a first packet of variable definition. */ |
14259 | putpkt ("qTfV"); | |
8d64371b TT |
14260 | getpkt (&rs->buf, 0); |
14261 | p = rs->buf.data (); | |
00bf0b85 | 14262 | while (*p && *p != 'l') |
d5551862 | 14263 | { |
00bf0b85 SS |
14264 | parse_tsv_definition (p, utsvp); |
14265 | /* Ask for another packet of variable definition. */ | |
14266 | putpkt ("qTsV"); | |
8d64371b TT |
14267 | getpkt (&rs->buf, 0); |
14268 | p = rs->buf.data (); | |
d5551862 | 14269 | } |
00bf0b85 | 14270 | return 0; |
d5551862 SS |
14271 | } |
14272 | ||
c1e36e3e PA |
14273 | /* The "set/show range-stepping" show hook. */ |
14274 | ||
14275 | static void | |
14276 | show_range_stepping (struct ui_file *file, int from_tty, | |
14277 | struct cmd_list_element *c, | |
14278 | const char *value) | |
14279 | { | |
14280 | fprintf_filtered (file, | |
14281 | _("Debugger's willingness to use range stepping " | |
14282 | "is %s.\n"), value); | |
14283 | } | |
14284 | ||
6b8edb51 PA |
14285 | /* Return true if the vCont;r action is supported by the remote |
14286 | stub. */ | |
14287 | ||
14288 | bool | |
14289 | remote_target::vcont_r_supported () | |
14290 | { | |
14291 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14292 | remote_vcont_probe (); | |
14293 | ||
14294 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14295 | && get_remote_state ()->supports_vCont.r); | |
14296 | } | |
14297 | ||
c1e36e3e PA |
14298 | /* The "set/show range-stepping" set hook. */ |
14299 | ||
14300 | static void | |
eb4c3f4a | 14301 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14302 | struct cmd_list_element *c) |
14303 | { | |
6b8edb51 PA |
14304 | /* When enabling, check whether range stepping is actually supported |
14305 | by the target, and warn if not. */ | |
c1e36e3e PA |
14306 | if (use_range_stepping) |
14307 | { | |
6b8edb51 PA |
14308 | remote_target *remote = get_current_remote_target (); |
14309 | if (remote == NULL | |
14310 | || !remote->vcont_r_supported ()) | |
14311 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14312 | } |
14313 | } | |
14314 | ||
c906108c | 14315 | void |
fba45db2 | 14316 | _initialize_remote (void) |
c906108c | 14317 | { |
9a7071a8 | 14318 | struct cmd_list_element *cmd; |
6f937416 | 14319 | const char *cmd_name; |
ea9c271d | 14320 | |
0f71a2f6 | 14321 | /* architecture specific data */ |
29709017 DJ |
14322 | remote_g_packet_data_handle = |
14323 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14324 | |
d9f719f1 PA |
14325 | add_target (remote_target_info, remote_target::open); |
14326 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14327 | |
dc8acb97 | 14328 | /* Hook into new objfile notification. */ |
76727919 | 14329 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14330 | |
c906108c SS |
14331 | #if 0 |
14332 | init_remote_threadtests (); | |
14333 | #endif | |
14334 | ||
23860348 | 14335 | /* set/show remote ... */ |
d471ea57 | 14336 | |
1bedd215 | 14337 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
590042fc | 14338 | Remote protocol specific variables.\n\ |
5a2468f5 | 14339 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14340 | the packets being used."), |
cff3e48b | 14341 | &remote_set_cmdlist, "set remote ", |
23860348 | 14342 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14343 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14344 | Remote protocol specific variables.\n\ |
5a2468f5 | 14345 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14346 | the packets being used."), |
cff3e48b | 14347 | &remote_show_cmdlist, "show remote ", |
23860348 | 14348 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14349 | |
1a966eab AC |
14350 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14351 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14352 | Argument is a single section name (default: all loaded sections).\n\ |
14353 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14354 | &cmdlist); |
14355 | ||
1a966eab AC |
14356 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14357 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14358 | maintenance packet TEXT\n\ |
14359 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14360 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14361 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14362 | terminating `#' character and checksum."), |
c906108c SS |
14363 | &maintenancelist); |
14364 | ||
7915a72c AC |
14365 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14366 | Set whether to send break if interrupted."), _("\ | |
14367 | Show whether to send break if interrupted."), _("\ | |
14368 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14369 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14370 | &setlist, &showlist); |
9a7071a8 JB |
14371 | cmd_name = "remotebreak"; |
14372 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14373 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14374 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14375 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14376 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14377 | ||
14378 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14379 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14380 | _("\ | |
9a7071a8 JB |
14381 | Set interrupt sequence to remote target."), _("\ |
14382 | Show interrupt sequence to remote target."), _("\ | |
14383 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14384 | NULL, show_interrupt_sequence, | |
14385 | &remote_set_cmdlist, | |
14386 | &remote_show_cmdlist); | |
14387 | ||
14388 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14389 | &interrupt_on_connect, _("\ | |
590042fc PW |
14390 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
14391 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
14392 | If set, interrupt sequence is sent to remote target."), |
14393 | NULL, NULL, | |
14394 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14395 | |
23860348 | 14396 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14397 | |
1a966eab AC |
14398 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14399 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14400 | &setlist); |
1a966eab AC |
14401 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14402 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14403 | &showlist); |
14404 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14405 | set_memory_write_packet_size, _("\ |
14406 | Set the maximum number of bytes per memory-write packet.\n\ | |
14407 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14408 | default packet size. The actual limit is further reduced\n\ | |
14409 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14410 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14411 | &remote_set_cmdlist); |
14412 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14413 | set_memory_read_packet_size, _("\ |
14414 | Set the maximum number of bytes per memory-read packet.\n\ | |
14415 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14416 | default packet size. The actual limit is further reduced\n\ | |
14417 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14418 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14419 | &remote_set_cmdlist); |
14420 | add_cmd ("memory-write-packet-size", no_class, | |
14421 | show_memory_write_packet_size, | |
1a966eab | 14422 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14423 | &remote_show_cmdlist); |
14424 | add_cmd ("memory-read-packet-size", no_class, | |
14425 | show_memory_read_packet_size, | |
1a966eab | 14426 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14427 | &remote_show_cmdlist); |
c906108c | 14428 | |
055303e2 | 14429 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14430 | &remote_hw_watchpoint_limit, _("\ |
14431 | Set the maximum number of target hardware watchpoints."), _("\ | |
14432 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14433 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14434 | NULL, show_hardware_watchpoint_limit, | |
14435 | &remote_set_cmdlist, | |
14436 | &remote_show_cmdlist); | |
14437 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14438 | no_class, | |
480a3f21 PW |
14439 | &remote_hw_watchpoint_length_limit, _("\ |
14440 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14441 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14442 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14443 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14444 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14445 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14446 | &remote_hw_breakpoint_limit, _("\ |
14447 | Set the maximum number of target hardware breakpoints."), _("\ | |
14448 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14449 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14450 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14451 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14452 | |
1b493192 PA |
14453 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14454 | &remote_address_size, _("\ | |
4d28ad1e AC |
14455 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14456 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14457 | NULL, |
14458 | NULL, /* FIXME: i18n: */ | |
14459 | &setlist, &showlist); | |
c906108c | 14460 | |
ca4f7f8b PA |
14461 | init_all_packet_configs (); |
14462 | ||
444abaca | 14463 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14464 | "X", "binary-download", 1); |
0f71a2f6 | 14465 | |
444abaca | 14466 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14467 | "vCont", "verbose-resume", 0); |
506fb367 | 14468 | |
89be2091 DJ |
14469 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14470 | "QPassSignals", "pass-signals", 0); | |
14471 | ||
82075af2 JS |
14472 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14473 | "QCatchSyscalls", "catch-syscalls", 0); | |
14474 | ||
9b224c5e PA |
14475 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14476 | "QProgramSignals", "program-signals", 0); | |
14477 | ||
bc3b087d SDJ |
14478 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14479 | "QSetWorkingDir", "set-working-dir", 0); | |
14480 | ||
aefd8b33 SDJ |
14481 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14482 | "QStartupWithShell", "startup-with-shell", 0); | |
14483 | ||
0a2dde4a SDJ |
14484 | add_packet_config_cmd (&remote_protocol_packets |
14485 | [PACKET_QEnvironmentHexEncoded], | |
14486 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14487 | 0); | |
14488 | ||
14489 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14490 | "QEnvironmentReset", "environment-reset", | |
14491 | 0); | |
14492 | ||
14493 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14494 | "QEnvironmentUnset", "environment-unset", | |
14495 | 0); | |
14496 | ||
444abaca | 14497 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14498 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14499 | |
444abaca | 14500 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14501 | "P", "set-register", 1); |
d471ea57 | 14502 | |
444abaca | 14503 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14504 | "p", "fetch-register", 1); |
b96ec7ac | 14505 | |
444abaca | 14506 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14507 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14508 | |
444abaca | 14509 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14510 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14511 | |
444abaca | 14512 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14513 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14514 | |
444abaca | 14515 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14516 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14517 | |
444abaca | 14518 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14519 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14520 | |
0876f84a DJ |
14521 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14522 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14523 | |
c78fa86a GB |
14524 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14525 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14526 | ||
23181151 DJ |
14527 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14528 | "qXfer:features:read", "target-features", 0); | |
14529 | ||
cfa9d6d9 DJ |
14530 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14531 | "qXfer:libraries:read", "library-info", 0); | |
14532 | ||
2268b414 JK |
14533 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14534 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14535 | ||
fd79ecee DJ |
14536 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14537 | "qXfer:memory-map:read", "memory-map", 0); | |
14538 | ||
07e059b5 VP |
14539 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14540 | "qXfer:osdata:read", "osdata", 0); | |
14541 | ||
dc146f7c VP |
14542 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14543 | "qXfer:threads:read", "threads", 0); | |
14544 | ||
4aa995e1 PA |
14545 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14546 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14547 | ||
14548 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14549 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14550 | ||
b3b9301e PA |
14551 | add_packet_config_cmd |
14552 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14553 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14554 | |
169081d0 TG |
14555 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14556 | "qXfer:uib:read", "unwind-info-block", 0); | |
14557 | ||
444abaca | 14558 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14559 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14560 | 0); |
14561 | ||
711e434b PM |
14562 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14563 | "qGetTIBAddr", "get-thread-information-block-address", | |
14564 | 0); | |
14565 | ||
40ab02ce MS |
14566 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14567 | "bc", "reverse-continue", 0); | |
14568 | ||
14569 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14570 | "bs", "reverse-step", 0); | |
14571 | ||
be2a5f71 DJ |
14572 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14573 | "qSupported", "supported-packets", 0); | |
14574 | ||
08388c79 DE |
14575 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14576 | "qSearch:memory", "search-memory", 0); | |
14577 | ||
bd3eecc3 PA |
14578 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14579 | "qTStatus", "trace-status", 0); | |
14580 | ||
15a201c8 GB |
14581 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14582 | "vFile:setfs", "hostio-setfs", 0); | |
14583 | ||
a6b151f1 DJ |
14584 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14585 | "vFile:open", "hostio-open", 0); | |
14586 | ||
14587 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14588 | "vFile:pread", "hostio-pread", 0); | |
14589 | ||
14590 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14591 | "vFile:pwrite", "hostio-pwrite", 0); | |
14592 | ||
14593 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14594 | "vFile:close", "hostio-close", 0); | |
14595 | ||
14596 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14597 | "vFile:unlink", "hostio-unlink", 0); | |
14598 | ||
b9e7b9c3 UW |
14599 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14600 | "vFile:readlink", "hostio-readlink", 0); | |
14601 | ||
0a93529c GB |
14602 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14603 | "vFile:fstat", "hostio-fstat", 0); | |
14604 | ||
2d717e4f DJ |
14605 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14606 | "vAttach", "attach", 0); | |
14607 | ||
14608 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14609 | "vRun", "run", 0); | |
14610 | ||
a6f3e723 SL |
14611 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14612 | "QStartNoAckMode", "noack", 0); | |
14613 | ||
82f73884 PA |
14614 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14615 | "vKill", "kill", 0); | |
14616 | ||
0b16c5cf PA |
14617 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14618 | "qAttached", "query-attached", 0); | |
14619 | ||
782b2b07 | 14620 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14621 | "ConditionalTracepoints", |
14622 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14623 | |
14624 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14625 | "ConditionalBreakpoints", | |
14626 | "conditional-breakpoints", 0); | |
14627 | ||
d3ce09f5 SS |
14628 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14629 | "BreakpointCommands", | |
14630 | "breakpoint-commands", 0); | |
14631 | ||
7a697b8d SS |
14632 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14633 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14634 | |
409873ef SS |
14635 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14636 | "TracepointSource", "TracepointSource", 0); | |
14637 | ||
d914c394 SS |
14638 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14639 | "QAllow", "allow", 0); | |
14640 | ||
0fb4aa4b PA |
14641 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14642 | "StaticTracepoints", "static-tracepoints", 0); | |
14643 | ||
1e4d1764 YQ |
14644 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14645 | "InstallInTrace", "install-in-trace", 0); | |
14646 | ||
0fb4aa4b PA |
14647 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14648 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14649 | ||
78d85199 YQ |
14650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14651 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14652 | ||
03583c20 UW |
14653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14654 | "QDisableRandomization", "disable-randomization", 0); | |
14655 | ||
d1feda86 YQ |
14656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14657 | "QAgent", "agent", 0); | |
14658 | ||
f6f899bf HAQ |
14659 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14660 | "QTBuffer:size", "trace-buffer-size", 0); | |
14661 | ||
9accd112 MM |
14662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14663 | "Qbtrace:off", "disable-btrace", 0); | |
14664 | ||
14665 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14666 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14667 | ||
14668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14669 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14670 | |
14671 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14672 | "qXfer:btrace", "read-btrace", 0); | |
14673 | ||
f4abbc16 MM |
14674 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14675 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14676 | ||
d33501a5 MM |
14677 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14678 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14679 | ||
73b8c1fd PA |
14680 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14681 | "multiprocess-feature", "multiprocess-feature", 0); | |
14682 | ||
f7e6eed5 PA |
14683 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14684 | "swbreak-feature", "swbreak-feature", 0); | |
14685 | ||
14686 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14687 | "hwbreak-feature", "hwbreak-feature", 0); | |
14688 | ||
89245bc0 DB |
14689 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14690 | "fork-event-feature", "fork-event-feature", 0); | |
14691 | ||
14692 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14693 | "vfork-event-feature", "vfork-event-feature", 0); | |
14694 | ||
b20a6524 MM |
14695 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14696 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14697 | ||
750ce8d1 YQ |
14698 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14699 | "vContSupported", "verbose-resume-supported", 0); | |
14700 | ||
94585166 DB |
14701 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14702 | "exec-event-feature", "exec-event-feature", 0); | |
14703 | ||
de979965 PA |
14704 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14705 | "vCtrlC", "ctrl-c", 0); | |
14706 | ||
65706a29 PA |
14707 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14708 | "QThreadEvents", "thread-events", 0); | |
14709 | ||
f2faf941 PA |
14710 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14711 | "N stop reply", "no-resumed-stop-reply", 0); | |
14712 | ||
0b736949 DB |
14713 | /* Assert that we've registered "set remote foo-packet" commands |
14714 | for all packet configs. */ | |
ca4f7f8b PA |
14715 | { |
14716 | int i; | |
14717 | ||
14718 | for (i = 0; i < PACKET_MAX; i++) | |
14719 | { | |
14720 | /* Ideally all configs would have a command associated. Some | |
14721 | still don't though. */ | |
14722 | int excepted; | |
14723 | ||
14724 | switch (i) | |
14725 | { | |
14726 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14727 | case PACKET_EnableDisableTracepoints_feature: |
14728 | case PACKET_tracenz_feature: | |
14729 | case PACKET_DisconnectedTracing_feature: | |
14730 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14731 | case PACKET_qCRC: |
14732 | /* Additions to this list need to be well justified: | |
14733 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14734 | excepted = 1; |
14735 | break; | |
14736 | default: | |
14737 | excepted = 0; | |
14738 | break; | |
14739 | } | |
14740 | ||
14741 | /* This catches both forgetting to add a config command, and | |
14742 | forgetting to remove a packet from the exception list. */ | |
14743 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14744 | } | |
14745 | } | |
14746 | ||
37a105a1 DJ |
14747 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14748 | Z sub-packet has its own set and show commands, but users may | |
14749 | have sets to this variable in their .gdbinit files (or in their | |
14750 | documentation). */ | |
e9e68a56 | 14751 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 14752 | &remote_Z_packet_detect, _("\ |
590042fc PW |
14753 | Set use of remote protocol `Z' packets."), _("\ |
14754 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 14755 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14756 | packets."), |
e9e68a56 | 14757 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14758 | show_remote_protocol_Z_packet_cmd, |
14759 | /* FIXME: i18n: Use of remote protocol | |
14760 | `Z' packets is %s. */ | |
e9e68a56 | 14761 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14762 | |
a6b151f1 | 14763 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
590042fc | 14764 | Manipulate files on the remote system.\n\ |
a6b151f1 DJ |
14765 | Transfer files to and from the remote target system."), |
14766 | &remote_cmdlist, "remote ", | |
14767 | 0 /* allow-unknown */, &cmdlist); | |
14768 | ||
14769 | add_cmd ("put", class_files, remote_put_command, | |
14770 | _("Copy a local file to the remote system."), | |
14771 | &remote_cmdlist); | |
14772 | ||
14773 | add_cmd ("get", class_files, remote_get_command, | |
14774 | _("Copy a remote file to the local system."), | |
14775 | &remote_cmdlist); | |
14776 | ||
14777 | add_cmd ("delete", class_files, remote_delete_command, | |
14778 | _("Delete a remote file."), | |
14779 | &remote_cmdlist); | |
14780 | ||
2d717e4f | 14781 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14782 | &remote_exec_file_var, _("\ |
590042fc PW |
14783 | Set the remote pathname for \"run\"."), _("\ |
14784 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
14785 | set_remote_exec_file, |
14786 | show_remote_exec_file, | |
14787 | &remote_set_cmdlist, | |
14788 | &remote_show_cmdlist); | |
2d717e4f | 14789 | |
c1e36e3e PA |
14790 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14791 | &use_range_stepping, _("\ | |
14792 | Enable or disable range stepping."), _("\ | |
14793 | Show whether target-assisted range stepping is enabled."), _("\ | |
14794 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14795 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14796 | of issuing multiple single-steps. This speeds up source level\n\ | |
14797 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14798 | stepping is supported by the target. The default is on."), | |
14799 | set_range_stepping, | |
14800 | show_range_stepping, | |
14801 | &setlist, | |
14802 | &showlist); | |
14803 | ||
ed2b7c17 TT |
14804 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
14805 | Set watchdog timer."), _("\ | |
14806 | Show watchdog timer."), _("\ | |
14807 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
14808 | to finish a low-level step or continue operation. If the specified amount\n\ | |
14809 | of time passes without a response from the target, an error occurs."), | |
14810 | NULL, | |
14811 | show_watchdog, | |
14812 | &setlist, &showlist); | |
14813 | ||
6cc8564b LM |
14814 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
14815 | &remote_packet_max_chars, _("\ | |
14816 | Set the maximum number of characters to display for each remote packet."), _("\ | |
14817 | Show the maximum number of characters to display for each remote packet."), _("\ | |
14818 | Specify \"unlimited\" to display all the characters."), | |
14819 | NULL, show_remote_packet_max_chars, | |
14820 | &setdebuglist, &showdebuglist); | |
14821 | ||
449092f6 CV |
14822 | /* Eventually initialize fileio. See fileio.c */ |
14823 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 14824 | } |