]>
Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1988-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
3b3dac9b | 30 | #include "process-stratum-target.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
0747795c TT |
45 | #include "common/filestuff.h" |
46 | #include "common/rsp-low.h" | |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
0747795c | 50 | #include "common/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" | |
0747795c | 71 | #include "common/agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
2ec845e7 | 75 | #include "common/scoped_restore.h" |
0747795c | 76 | #include "common/environ.h" |
f6327dcb | 77 | #include "common/byte-vector.h" |
9d6eea31 | 78 | #include <unordered_map> |
35b1e5cc | 79 | |
f6ac5f3d PA |
80 | /* The remote target. */ |
81 | ||
d9f719f1 PA |
82 | static const char remote_doc[] = N_("\ |
83 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
84 | Specify the serial device it is connected to\n\ | |
85 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
86 | ||
6b8edb51 PA |
87 | #define OPAQUETHREADBYTES 8 |
88 | ||
89 | /* a 64 bit opaque identifier */ | |
90 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
91 | ||
92 | struct gdb_ext_thread_info; | |
93 | struct threads_listing_context; | |
94 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
95 | struct protocol_feature; | |
96 | struct packet_reg; | |
97 | ||
98 | struct stop_reply; | |
32603266 | 99 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
100 | |
101 | /* Generic configuration support for packets the stub optionally | |
102 | supports. Allows the user to specify the use of the packet as well | |
103 | as allowing GDB to auto-detect support in the remote stub. */ | |
104 | ||
105 | enum packet_support | |
106 | { | |
107 | PACKET_SUPPORT_UNKNOWN = 0, | |
108 | PACKET_ENABLE, | |
109 | PACKET_DISABLE | |
110 | }; | |
111 | ||
112 | /* Analyze a packet's return value and update the packet config | |
113 | accordingly. */ | |
114 | ||
115 | enum packet_result | |
116 | { | |
117 | PACKET_ERROR, | |
118 | PACKET_OK, | |
119 | PACKET_UNKNOWN | |
120 | }; | |
121 | ||
122 | struct threads_listing_context; | |
3c69da40 PA |
123 | |
124 | /* Stub vCont actions support. | |
125 | ||
126 | Each field is a boolean flag indicating whether the stub reports | |
127 | support for the corresponding action. */ | |
128 | ||
129 | struct vCont_action_support | |
130 | { | |
131 | /* vCont;t */ | |
132 | bool t = false; | |
133 | ||
134 | /* vCont;r */ | |
135 | bool r = false; | |
136 | ||
137 | /* vCont;s */ | |
138 | bool s = false; | |
139 | ||
140 | /* vCont;S */ | |
141 | bool S = false; | |
142 | }; | |
143 | ||
144 | /* About this many threadisds fit in a packet. */ | |
145 | ||
146 | #define MAXTHREADLISTRESULTS 32 | |
147 | ||
148 | /* Data for the vFile:pread readahead cache. */ | |
149 | ||
150 | struct readahead_cache | |
151 | { | |
152 | /* Invalidate the readahead cache. */ | |
153 | void invalidate (); | |
154 | ||
155 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
156 | void invalidate_fd (int fd); | |
157 | ||
158 | /* Serve pread from the readahead cache. Returns number of bytes | |
159 | read, or 0 if the request can't be served from the cache. */ | |
160 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
161 | ||
162 | /* The file descriptor for the file that is being cached. -1 if the | |
163 | cache is invalid. */ | |
164 | int fd = -1; | |
165 | ||
166 | /* The offset into the file that the cache buffer corresponds | |
167 | to. */ | |
168 | ULONGEST offset = 0; | |
169 | ||
170 | /* The buffer holding the cache contents. */ | |
171 | gdb_byte *buf = nullptr; | |
172 | /* The buffer's size. We try to read as much as fits into a packet | |
173 | at a time. */ | |
174 | size_t bufsize = 0; | |
175 | ||
176 | /* Cache hit and miss counters. */ | |
177 | ULONGEST hit_count = 0; | |
178 | ULONGEST miss_count = 0; | |
179 | }; | |
180 | ||
181 | /* Description of the remote protocol for a given architecture. */ | |
182 | ||
183 | struct packet_reg | |
184 | { | |
185 | long offset; /* Offset into G packet. */ | |
186 | long regnum; /* GDB's internal register number. */ | |
187 | LONGEST pnum; /* Remote protocol register number. */ | |
188 | int in_g_packet; /* Always part of G packet. */ | |
189 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
190 | at present. */ | |
191 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
192 | at present. */ | |
193 | }; | |
194 | ||
195 | struct remote_arch_state | |
196 | { | |
197 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
198 | ||
199 | /* Description of the remote protocol registers. */ | |
200 | long sizeof_g_packet; | |
201 | ||
202 | /* Description of the remote protocol registers indexed by REGNUM | |
203 | (making an array gdbarch_num_regs in size). */ | |
204 | std::unique_ptr<packet_reg[]> regs; | |
205 | ||
206 | /* This is the size (in chars) of the first response to the ``g'' | |
207 | packet. It is used as a heuristic when determining the maximum | |
208 | size of memory-read and memory-write packets. A target will | |
209 | typically only reserve a buffer large enough to hold the ``g'' | |
210 | packet. The size does not include packet overhead (headers and | |
211 | trailers). */ | |
212 | long actual_register_packet_size; | |
213 | ||
214 | /* This is the maximum size (in chars) of a non read/write packet. | |
215 | It is also used as a cap on the size of read/write packets. */ | |
216 | long remote_packet_size; | |
217 | }; | |
218 | ||
219 | /* Description of the remote protocol state for the currently | |
220 | connected target. This is per-target state, and independent of the | |
221 | selected architecture. */ | |
222 | ||
223 | class remote_state | |
224 | { | |
225 | public: | |
226 | ||
227 | remote_state (); | |
228 | ~remote_state (); | |
229 | ||
230 | /* Get the remote arch state for GDBARCH. */ | |
231 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
232 | ||
233 | public: /* data */ | |
234 | ||
235 | /* A buffer to use for incoming packets, and its current size. The | |
236 | buffer is grown dynamically for larger incoming packets. | |
237 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 238 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
239 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
240 | packets. */ | |
8d64371b | 241 | gdb::char_vector buf; |
3c69da40 PA |
242 | |
243 | /* True if we're going through initial connection setup (finding out | |
244 | about the remote side's threads, relocating symbols, etc.). */ | |
245 | bool starting_up = false; | |
246 | ||
247 | /* If we negotiated packet size explicitly (and thus can bypass | |
248 | heuristics for the largest packet size that will not overflow | |
249 | a buffer in the stub), this will be set to that packet size. | |
250 | Otherwise zero, meaning to use the guessed size. */ | |
251 | long explicit_packet_size = 0; | |
252 | ||
253 | /* remote_wait is normally called when the target is running and | |
254 | waits for a stop reply packet. But sometimes we need to call it | |
255 | when the target is already stopped. We can send a "?" packet | |
256 | and have remote_wait read the response. Or, if we already have | |
257 | the response, we can stash it in BUF and tell remote_wait to | |
258 | skip calling getpkt. This flag is set when BUF contains a | |
259 | stop reply packet and the target is not waiting. */ | |
260 | int cached_wait_status = 0; | |
261 | ||
262 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
263 | expect acks from each other. The connection is assumed to be | |
264 | reliable. */ | |
265 | bool noack_mode = false; | |
266 | ||
267 | /* True if we're connected in extended remote mode. */ | |
268 | bool extended = false; | |
269 | ||
270 | /* True if we resumed the target and we're waiting for the target to | |
271 | stop. In the mean time, we can't start another command/query. | |
272 | The remote server wouldn't be ready to process it, so we'd | |
273 | timeout waiting for a reply that would never come and eventually | |
274 | we'd close the connection. This can happen in asynchronous mode | |
275 | because we allow GDB commands while the target is running. */ | |
276 | bool waiting_for_stop_reply = false; | |
277 | ||
278 | /* The status of the stub support for the various vCont actions. */ | |
279 | vCont_action_support supports_vCont; | |
280 | ||
281 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
282 | responded to that. */ | |
283 | bool ctrlc_pending_p = false; | |
284 | ||
285 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
286 | remote descriptor. At that point it is not safe to send a remote | |
287 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
288 | process it once we're done with sending/receiving the current | |
289 | packet, which should be shortly. If however that takes too long, | |
290 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
291 | bool got_ctrlc_during_io = false; | |
292 | ||
293 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
294 | remote_open knows that we don't have a file open when the program | |
295 | starts. */ | |
296 | struct serial *remote_desc = nullptr; | |
297 | ||
298 | /* These are the threads which we last sent to the remote system. The | |
299 | TID member will be -1 for all or -2 for not sent yet. */ | |
300 | ptid_t general_thread = null_ptid; | |
301 | ptid_t continue_thread = null_ptid; | |
302 | ||
303 | /* This is the traceframe which we last selected on the remote system. | |
304 | It will be -1 if no traceframe is selected. */ | |
305 | int remote_traceframe_number = -1; | |
306 | ||
307 | char *last_pass_packet = nullptr; | |
308 | ||
309 | /* The last QProgramSignals packet sent to the target. We bypass | |
310 | sending a new program signals list down to the target if the new | |
311 | packet is exactly the same as the last we sent. IOW, we only let | |
312 | the target know about program signals list changes. */ | |
313 | char *last_program_signals_packet = nullptr; | |
314 | ||
315 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
316 | ||
317 | bool last_sent_step = false; | |
318 | ||
319 | /* The execution direction of the last resume we got. */ | |
320 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
321 | ||
322 | char *finished_object = nullptr; | |
323 | char *finished_annex = nullptr; | |
324 | ULONGEST finished_offset = 0; | |
325 | ||
326 | /* Should we try the 'ThreadInfo' query packet? | |
327 | ||
328 | This variable (NOT available to the user: auto-detect only!) | |
329 | determines whether GDB will use the new, simpler "ThreadInfo" | |
330 | query or the older, more complex syntax for thread queries. | |
331 | This is an auto-detect variable (set to true at each connect, | |
332 | and set to false when the target fails to recognize it). */ | |
333 | bool use_threadinfo_query = false; | |
334 | bool use_threadextra_query = false; | |
335 | ||
336 | threadref echo_nextthread {}; | |
337 | threadref nextthread {}; | |
338 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
339 | ||
340 | /* The state of remote notification. */ | |
341 | struct remote_notif_state *notif_state = nullptr; | |
342 | ||
343 | /* The branch trace configuration. */ | |
344 | struct btrace_config btrace_config {}; | |
345 | ||
346 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
347 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
348 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
349 | has yet been sent. */ | |
350 | int fs_pid = -1; | |
351 | ||
352 | /* A readahead cache for vFile:pread. Often, reading a binary | |
353 | involves a sequence of small reads. E.g., when parsing an ELF | |
354 | file. A readahead cache helps mostly the case of remote | |
355 | debugging on a connection with higher latency, due to the | |
356 | request/reply nature of the RSP. We only cache data for a single | |
357 | file descriptor at a time. */ | |
358 | struct readahead_cache readahead_cache; | |
359 | ||
360 | /* The list of already fetched and acknowledged stop events. This | |
361 | queue is used for notification Stop, and other notifications | |
362 | don't need queue for their events, because the notification | |
363 | events of Stop can't be consumed immediately, so that events | |
364 | should be queued first, and be consumed by remote_wait_{ns,as} | |
365 | one per time. Other notifications can consume their events | |
366 | immediately, so queue is not needed for them. */ | |
953edf2b | 367 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
368 | |
369 | /* Asynchronous signal handle registered as event loop source for | |
370 | when we have pending events ready to be passed to the core. */ | |
371 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
372 | ||
373 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
374 | ``forever'' still use the normal timeout mechanism. This is | |
375 | currently used by the ASYNC code to guarentee that target reads | |
376 | during the initial connect always time-out. Once getpkt has been | |
377 | modified to return a timeout indication and, in turn | |
378 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
379 | this can go away. */ | |
380 | int wait_forever_enabled_p = 1; | |
381 | ||
382 | private: | |
383 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
384 | is only one entry here, though we may see more with stubs that | |
385 | support multi-process. */ | |
386 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
387 | m_arch_states; | |
388 | }; | |
6b8edb51 | 389 | |
d9f719f1 PA |
390 | static const target_info remote_target_info = { |
391 | "remote", | |
392 | N_("Remote serial target in gdb-specific protocol"), | |
393 | remote_doc | |
394 | }; | |
395 | ||
3b3dac9b | 396 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
397 | { |
398 | public: | |
3b3dac9b | 399 | remote_target () = default; |
6b8edb51 | 400 | ~remote_target () override; |
f6ac5f3d | 401 | |
d9f719f1 PA |
402 | const target_info &info () const override |
403 | { return remote_target_info; } | |
f6ac5f3d PA |
404 | |
405 | thread_control_capabilities get_thread_control_capabilities () override | |
406 | { return tc_schedlock; } | |
407 | ||
d9f719f1 PA |
408 | /* Open a remote connection. */ |
409 | static void open (const char *, int); | |
410 | ||
f6ac5f3d PA |
411 | void close () override; |
412 | ||
413 | void detach (inferior *, int) override; | |
414 | void disconnect (const char *, int) override; | |
415 | ||
416 | void commit_resume () override; | |
417 | void resume (ptid_t, int, enum gdb_signal) override; | |
418 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
419 | ||
420 | void fetch_registers (struct regcache *, int) override; | |
421 | void store_registers (struct regcache *, int) override; | |
422 | void prepare_to_store (struct regcache *) override; | |
423 | ||
424 | void files_info () override; | |
425 | ||
426 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
427 | ||
428 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
429 | enum remove_bp_reason) override; | |
430 | ||
431 | ||
57810aa7 PA |
432 | bool stopped_by_sw_breakpoint () override; |
433 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 434 | |
57810aa7 | 435 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 436 | |
57810aa7 | 437 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 438 | |
57810aa7 | 439 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 440 | |
57810aa7 | 441 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 442 | |
57810aa7 | 443 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
444 | |
445 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
446 | ||
447 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
448 | ||
449 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
450 | ||
451 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
452 | ||
453 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
454 | struct expression *) override; | |
455 | ||
456 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
457 | struct expression *) override; | |
458 | ||
459 | void kill () override; | |
460 | ||
461 | void load (const char *, int) override; | |
462 | ||
463 | void mourn_inferior () override; | |
464 | ||
adc6a863 | 465 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
466 | |
467 | int set_syscall_catchpoint (int, bool, int, | |
468 | gdb::array_view<const int>) override; | |
469 | ||
adc6a863 | 470 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 471 | |
57810aa7 | 472 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
473 | |
474 | const char *thread_name (struct thread_info *) override; | |
475 | ||
476 | void update_thread_list () override; | |
477 | ||
478 | const char *pid_to_str (ptid_t) override; | |
479 | ||
480 | const char *extra_thread_info (struct thread_info *) override; | |
481 | ||
482 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
483 | ||
484 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
485 | int handle_len, | |
486 | inferior *inf) override; | |
487 | ||
488 | void stop (ptid_t) override; | |
489 | ||
490 | void interrupt () override; | |
491 | ||
492 | void pass_ctrlc () override; | |
493 | ||
494 | enum target_xfer_status xfer_partial (enum target_object object, | |
495 | const char *annex, | |
496 | gdb_byte *readbuf, | |
497 | const gdb_byte *writebuf, | |
498 | ULONGEST offset, ULONGEST len, | |
499 | ULONGEST *xfered_len) override; | |
500 | ||
501 | ULONGEST get_memory_xfer_limit () override; | |
502 | ||
503 | void rcmd (const char *command, struct ui_file *output) override; | |
504 | ||
505 | char *pid_to_exec_file (int pid) override; | |
506 | ||
507 | void log_command (const char *cmd) override | |
508 | { | |
509 | serial_log_command (this, cmd); | |
510 | } | |
511 | ||
512 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
513 | CORE_ADDR load_module_addr, | |
514 | CORE_ADDR offset) override; | |
515 | ||
57810aa7 | 516 | bool can_execute_reverse () override; |
f6ac5f3d PA |
517 | |
518 | std::vector<mem_region> memory_map () override; | |
519 | ||
520 | void flash_erase (ULONGEST address, LONGEST length) override; | |
521 | ||
522 | void flash_done () override; | |
523 | ||
524 | const struct target_desc *read_description () override; | |
525 | ||
526 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
527 | const gdb_byte *pattern, ULONGEST pattern_len, | |
528 | CORE_ADDR *found_addrp) override; | |
529 | ||
57810aa7 | 530 | bool can_async_p () override; |
f6ac5f3d | 531 | |
57810aa7 | 532 | bool is_async_p () override; |
f6ac5f3d PA |
533 | |
534 | void async (int) override; | |
535 | ||
536 | void thread_events (int) override; | |
537 | ||
538 | int can_do_single_step () override; | |
539 | ||
540 | void terminal_inferior () override; | |
541 | ||
542 | void terminal_ours () override; | |
543 | ||
57810aa7 | 544 | bool supports_non_stop () override; |
f6ac5f3d | 545 | |
57810aa7 | 546 | bool supports_multi_process () override; |
f6ac5f3d | 547 | |
57810aa7 | 548 | bool supports_disable_randomization () override; |
f6ac5f3d | 549 | |
57810aa7 | 550 | bool filesystem_is_local () override; |
f6ac5f3d PA |
551 | |
552 | ||
553 | int fileio_open (struct inferior *inf, const char *filename, | |
554 | int flags, int mode, int warn_if_slow, | |
555 | int *target_errno) override; | |
556 | ||
557 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
558 | ULONGEST offset, int *target_errno) override; | |
559 | ||
560 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
561 | ULONGEST offset, int *target_errno) override; | |
562 | ||
563 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
564 | ||
565 | int fileio_close (int fd, int *target_errno) override; | |
566 | ||
567 | int fileio_unlink (struct inferior *inf, | |
568 | const char *filename, | |
569 | int *target_errno) override; | |
570 | ||
571 | gdb::optional<std::string> | |
572 | fileio_readlink (struct inferior *inf, | |
573 | const char *filename, | |
574 | int *target_errno) override; | |
575 | ||
57810aa7 | 576 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 577 | |
57810aa7 | 578 | bool supports_string_tracing () override; |
f6ac5f3d | 579 | |
57810aa7 | 580 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 581 | |
57810aa7 | 582 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
583 | |
584 | void trace_init () override; | |
585 | ||
586 | void download_tracepoint (struct bp_location *location) override; | |
587 | ||
57810aa7 | 588 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
589 | |
590 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
591 | ||
592 | void enable_tracepoint (struct bp_location *location) override; | |
593 | ||
594 | void disable_tracepoint (struct bp_location *location) override; | |
595 | ||
596 | void trace_set_readonly_regions () override; | |
597 | ||
598 | void trace_start () override; | |
599 | ||
600 | int get_trace_status (struct trace_status *ts) override; | |
601 | ||
602 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
603 | override; | |
604 | ||
605 | void trace_stop () override; | |
606 | ||
607 | int trace_find (enum trace_find_type type, int num, | |
608 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
609 | ||
57810aa7 | 610 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
611 | |
612 | int save_trace_data (const char *filename) override; | |
613 | ||
614 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
615 | ||
616 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
617 | ||
618 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
619 | ||
620 | int get_min_fast_tracepoint_insn_len () override; | |
621 | ||
622 | void set_disconnected_tracing (int val) override; | |
623 | ||
624 | void set_circular_trace_buffer (int val) override; | |
625 | ||
626 | void set_trace_buffer_size (LONGEST val) override; | |
627 | ||
57810aa7 PA |
628 | bool set_trace_notes (const char *user, const char *notes, |
629 | const char *stopnotes) override; | |
f6ac5f3d PA |
630 | |
631 | int core_of_thread (ptid_t ptid) override; | |
632 | ||
633 | int verify_memory (const gdb_byte *data, | |
634 | CORE_ADDR memaddr, ULONGEST size) override; | |
635 | ||
636 | ||
57810aa7 | 637 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
638 | |
639 | void set_permissions () override; | |
640 | ||
641 | bool static_tracepoint_marker_at (CORE_ADDR, | |
642 | struct static_tracepoint_marker *marker) | |
643 | override; | |
644 | ||
645 | std::vector<static_tracepoint_marker> | |
646 | static_tracepoint_markers_by_strid (const char *id) override; | |
647 | ||
648 | traceframe_info_up traceframe_info () override; | |
649 | ||
57810aa7 PA |
650 | bool use_agent (bool use) override; |
651 | bool can_use_agent () override; | |
f6ac5f3d PA |
652 | |
653 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
654 | const struct btrace_config *conf) override; | |
655 | ||
656 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
657 | ||
658 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
659 | ||
660 | enum btrace_error read_btrace (struct btrace_data *data, | |
661 | struct btrace_target_info *btinfo, | |
662 | enum btrace_read_type type) override; | |
663 | ||
664 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 665 | bool augmented_libraries_svr4_read () override; |
f6ac5f3d PA |
666 | int follow_fork (int, int) override; |
667 | void follow_exec (struct inferior *, char *) override; | |
668 | int insert_fork_catchpoint (int) override; | |
669 | int remove_fork_catchpoint (int) override; | |
670 | int insert_vfork_catchpoint (int) override; | |
671 | int remove_vfork_catchpoint (int) override; | |
672 | int insert_exec_catchpoint (int) override; | |
673 | int remove_exec_catchpoint (int) override; | |
674 | enum exec_direction_kind execution_direction () override; | |
675 | ||
6b8edb51 PA |
676 | public: /* Remote specific methods. */ |
677 | ||
678 | void remote_download_command_source (int num, ULONGEST addr, | |
679 | struct command_line *cmds); | |
680 | ||
681 | void remote_file_put (const char *local_file, const char *remote_file, | |
682 | int from_tty); | |
683 | void remote_file_get (const char *remote_file, const char *local_file, | |
684 | int from_tty); | |
685 | void remote_file_delete (const char *remote_file, int from_tty); | |
686 | ||
687 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
688 | ULONGEST offset, int *remote_errno); | |
689 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
690 | ULONGEST offset, int *remote_errno); | |
691 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
692 | ULONGEST offset, int *remote_errno); | |
693 | ||
694 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
695 | int *remote_errno, char **attachment, | |
696 | int *attachment_len); | |
697 | int remote_hostio_set_filesystem (struct inferior *inf, | |
698 | int *remote_errno); | |
699 | /* We should get rid of this and use fileio_open directly. */ | |
700 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
701 | int flags, int mode, int warn_if_slow, | |
702 | int *remote_errno); | |
703 | int remote_hostio_close (int fd, int *remote_errno); | |
704 | ||
705 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
706 | int *remote_errno); | |
707 | ||
708 | struct remote_state *get_remote_state (); | |
709 | ||
710 | long get_remote_packet_size (void); | |
711 | long get_memory_packet_size (struct memory_packet_config *config); | |
712 | ||
713 | long get_memory_write_packet_size (); | |
714 | long get_memory_read_packet_size (); | |
715 | ||
716 | char *append_pending_thread_resumptions (char *p, char *endp, | |
717 | ptid_t ptid); | |
d9f719f1 | 718 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 719 | void start_remote (int from_tty, int extended_p); |
00431a78 | 720 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
721 | |
722 | char *append_resumption (char *p, char *endp, | |
723 | ptid_t ptid, int step, gdb_signal siggnal); | |
724 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
725 | gdb_signal siggnal); | |
726 | ||
727 | void add_current_inferior_and_thread (char *wait_status); | |
728 | ||
729 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
730 | int options); | |
731 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, | |
732 | int options); | |
733 | ||
734 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
735 | target_waitstatus *status); | |
736 | ||
737 | void remote_notice_new_inferior (ptid_t currthread, int executing); | |
738 | ||
739 | void process_initial_stop_replies (int from_tty); | |
740 | ||
00431a78 | 741 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
742 | |
743 | void btrace_sync_conf (const btrace_config *conf); | |
744 | ||
745 | void remote_btrace_maybe_reopen (); | |
746 | ||
747 | void remove_new_fork_children (threads_listing_context *context); | |
748 | void kill_new_fork_children (int pid); | |
749 | void discard_pending_stop_replies (struct inferior *inf); | |
750 | int stop_reply_queue_length (); | |
751 | ||
752 | void check_pending_events_prevent_wildcard_vcont | |
753 | (int *may_global_wildcard_vcont); | |
754 | ||
755 | void discard_pending_stop_replies_in_queue (); | |
756 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
757 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
758 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 759 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
760 | |
761 | void remote_stop_ns (ptid_t ptid); | |
762 | void remote_interrupt_as (); | |
763 | void remote_interrupt_ns (); | |
764 | ||
765 | char *remote_get_noisy_reply (); | |
766 | int remote_query_attached (int pid); | |
767 | inferior *remote_add_inferior (int fake_pid_p, int pid, int attached, | |
768 | int try_open_exec); | |
769 | ||
770 | ptid_t remote_current_thread (ptid_t oldpid); | |
771 | ptid_t get_current_thread (char *wait_status); | |
772 | ||
773 | void set_thread (ptid_t ptid, int gen); | |
774 | void set_general_thread (ptid_t ptid); | |
775 | void set_continue_thread (ptid_t ptid); | |
776 | void set_general_process (); | |
777 | ||
778 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
779 | ||
780 | int remote_unpack_thread_info_response (char *pkt, threadref *expectedref, | |
781 | gdb_ext_thread_info *info); | |
782 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
783 | gdb_ext_thread_info *info); | |
784 | ||
785 | int parse_threadlist_response (char *pkt, int result_limit, | |
786 | threadref *original_echo, | |
787 | threadref *resultlist, | |
788 | int *doneflag); | |
789 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
790 | int result_limit, int *done, int *result_count, | |
791 | threadref *threadlist); | |
792 | ||
793 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
794 | void *context, int looplimit); | |
795 | ||
796 | int remote_get_threads_with_ql (threads_listing_context *context); | |
797 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
798 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
799 | ||
800 | void extended_remote_restart (); | |
801 | ||
802 | void get_offsets (); | |
803 | ||
804 | void remote_check_symbols (); | |
805 | ||
806 | void remote_supported_packet (const struct protocol_feature *feature, | |
807 | enum packet_support support, | |
808 | const char *argument); | |
809 | ||
810 | void remote_query_supported (); | |
811 | ||
812 | void remote_packet_size (const protocol_feature *feature, | |
813 | packet_support support, const char *value); | |
814 | ||
815 | void remote_serial_quit_handler (); | |
816 | ||
817 | void remote_detach_pid (int pid); | |
818 | ||
819 | void remote_vcont_probe (); | |
820 | ||
821 | void remote_resume_with_hc (ptid_t ptid, int step, | |
822 | gdb_signal siggnal); | |
823 | ||
824 | void send_interrupt_sequence (); | |
825 | void interrupt_query (); | |
826 | ||
827 | void remote_notif_get_pending_events (notif_client *nc); | |
828 | ||
829 | int fetch_register_using_p (struct regcache *regcache, | |
830 | packet_reg *reg); | |
831 | int send_g_packet (); | |
832 | void process_g_packet (struct regcache *regcache); | |
833 | void fetch_registers_using_g (struct regcache *regcache); | |
834 | int store_register_using_P (const struct regcache *regcache, | |
835 | packet_reg *reg); | |
836 | void store_registers_using_G (const struct regcache *regcache); | |
837 | ||
838 | void set_remote_traceframe (); | |
839 | ||
840 | void check_binary_download (CORE_ADDR addr); | |
841 | ||
842 | target_xfer_status remote_write_bytes_aux (const char *header, | |
843 | CORE_ADDR memaddr, | |
844 | const gdb_byte *myaddr, | |
845 | ULONGEST len_units, | |
846 | int unit_size, | |
847 | ULONGEST *xfered_len_units, | |
848 | char packet_format, | |
849 | int use_length); | |
850 | ||
851 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
852 | const gdb_byte *myaddr, ULONGEST len, | |
853 | int unit_size, ULONGEST *xfered_len); | |
854 | ||
855 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
856 | ULONGEST len_units, | |
857 | int unit_size, ULONGEST *xfered_len_units); | |
858 | ||
859 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
860 | ULONGEST memaddr, | |
861 | ULONGEST len, | |
862 | int unit_size, | |
863 | ULONGEST *xfered_len); | |
864 | ||
865 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
866 | gdb_byte *myaddr, ULONGEST len, | |
867 | int unit_size, | |
868 | ULONGEST *xfered_len); | |
869 | ||
870 | packet_result remote_send_printf (const char *format, ...) | |
871 | ATTRIBUTE_PRINTF (2, 3); | |
872 | ||
873 | target_xfer_status remote_flash_write (ULONGEST address, | |
874 | ULONGEST length, ULONGEST *xfered_len, | |
875 | const gdb_byte *data); | |
876 | ||
877 | int readchar (int timeout); | |
878 | ||
879 | void remote_serial_write (const char *str, int len); | |
880 | ||
881 | int putpkt (const char *buf); | |
882 | int putpkt_binary (const char *buf, int cnt); | |
883 | ||
8d64371b TT |
884 | int putpkt (const gdb::char_vector &buf) |
885 | { | |
886 | return putpkt (buf.data ()); | |
887 | } | |
888 | ||
6b8edb51 | 889 | void skip_frame (); |
8d64371b TT |
890 | long read_frame (gdb::char_vector *buf_p); |
891 | void getpkt (gdb::char_vector *buf, int forever); | |
892 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 893 | int expecting_notif, int *is_notif); |
8d64371b TT |
894 | int getpkt_sane (gdb::char_vector *buf, int forever); |
895 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
896 | int *is_notif); |
897 | int remote_vkill (int pid); | |
898 | void remote_kill_k (); | |
899 | ||
900 | void extended_remote_disable_randomization (int val); | |
901 | int extended_remote_run (const std::string &args); | |
902 | ||
903 | void send_environment_packet (const char *action, | |
904 | const char *packet, | |
905 | const char *value); | |
906 | ||
907 | void extended_remote_environment_support (); | |
3c69da40 | 908 | void extended_remote_set_inferior_cwd (); |
80152258 | 909 | |
3c69da40 PA |
910 | target_xfer_status remote_write_qxfer (const char *object_name, |
911 | const char *annex, | |
912 | const gdb_byte *writebuf, | |
913 | ULONGEST offset, LONGEST len, | |
914 | ULONGEST *xfered_len, | |
915 | struct packet_config *packet); | |
43c3a0e4 | 916 | |
3c69da40 PA |
917 | target_xfer_status remote_read_qxfer (const char *object_name, |
918 | const char *annex, | |
919 | gdb_byte *readbuf, ULONGEST offset, | |
920 | LONGEST len, | |
921 | ULONGEST *xfered_len, | |
922 | struct packet_config *packet); | |
43c3a0e4 | 923 | |
3c69da40 | 924 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 925 | |
3c69da40 | 926 | bool vcont_r_supported (); |
43c3a0e4 | 927 | |
3c69da40 | 928 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 929 | |
3c69da40 | 930 | private: /* data fields */ |
43c3a0e4 | 931 | |
3c69da40 PA |
932 | /* The remote state. Don't reference this directly. Use the |
933 | get_remote_state method instead. */ | |
934 | remote_state m_remote_state; | |
43c3a0e4 PA |
935 | }; |
936 | ||
3c69da40 PA |
937 | static const target_info extended_remote_target_info = { |
938 | "extended-remote", | |
939 | N_("Extended remote serial target in gdb-specific protocol"), | |
940 | remote_doc | |
941 | }; | |
ea9c271d | 942 | |
3c69da40 PA |
943 | /* Set up the extended remote target by extending the standard remote |
944 | target and adding to it. */ | |
945 | ||
946 | class extended_remote_target final : public remote_target | |
ea9c271d | 947 | { |
9d6eea31 | 948 | public: |
3c69da40 PA |
949 | const target_info &info () const override |
950 | { return extended_remote_target_info; } | |
9d6eea31 | 951 | |
3c69da40 PA |
952 | /* Open an extended-remote connection. */ |
953 | static void open (const char *, int); | |
de44f5a7 | 954 | |
3c69da40 PA |
955 | bool can_create_inferior () override { return true; } |
956 | void create_inferior (const char *, const std::string &, | |
957 | char **, int) override; | |
9d6eea31 | 958 | |
3c69da40 | 959 | void detach (inferior *, int) override; |
9d6eea31 | 960 | |
3c69da40 PA |
961 | bool can_attach () override { return true; } |
962 | void attach (const char *, int) override; | |
be2a5f71 | 963 | |
3c69da40 PA |
964 | void post_attach (int) override; |
965 | bool supports_disable_randomization () override; | |
966 | }; | |
1e51243a | 967 | |
3c69da40 PA |
968 | /* Per-program-space data key. */ |
969 | static const struct program_space_data *remote_pspace_data; | |
2d717e4f | 970 | |
3c69da40 PA |
971 | /* The variable registered as the control variable used by the |
972 | remote exec-file commands. While the remote exec-file setting is | |
973 | per-program-space, the set/show machinery uses this as the | |
974 | location of the remote exec-file value. */ | |
975 | static char *remote_exec_file_var; | |
a6f3e723 | 976 | |
3c69da40 PA |
977 | /* The size to align memory write packets, when practical. The protocol |
978 | does not guarantee any alignment, and gdb will generate short | |
979 | writes and unaligned writes, but even as a best-effort attempt this | |
980 | can improve bulk transfers. For instance, if a write is misaligned | |
981 | relative to the target's data bus, the stub may need to make an extra | |
982 | round trip fetching data from the target. This doesn't make a | |
983 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 984 | |
3c69da40 PA |
985 | The alignment chosen is arbitrary; usually data bus width is |
986 | important here, not the possibly larger cache line size. */ | |
987 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 988 | |
3c69da40 | 989 | /* Prototypes for local functions. */ |
74531fed | 990 | |
3c69da40 | 991 | static int hexnumlen (ULONGEST num); |
782b2b07 | 992 | |
3c69da40 | 993 | static int stubhex (int ch); |
5d93a237 | 994 | |
3c69da40 | 995 | static int hexnumstr (char *, ULONGEST); |
048094ac | 996 | |
3c69da40 | 997 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 998 | |
3c69da40 | 999 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1000 | |
3c69da40 | 1001 | static void print_packet (const char *); |
747dc59d | 1002 | |
3c69da40 | 1003 | static int stub_unpack_int (char *buff, int fieldlength); |
5e4a05c4 | 1004 | |
3c69da40 | 1005 | struct packet_config; |
b73be471 | 1006 | |
3c69da40 | 1007 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1008 | |
3c69da40 PA |
1009 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1010 | int from_tty, | |
1011 | struct cmd_list_element *c, | |
1012 | const char *value); | |
8e88304f | 1013 | |
3c69da40 | 1014 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1015 | |
3c69da40 | 1016 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1017 | |
eefce37f | 1018 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1019 | |
05be00a8 | 1020 | static void remote_console_output (const char *msg); |
5965e028 | 1021 | |
3c69da40 | 1022 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1023 | |
3c69da40 | 1024 | static void remote_unpush_and_throw (void); |
15a201c8 | 1025 | |
3c69da40 | 1026 | /* For "remote". */ |
80152258 | 1027 | |
3c69da40 | 1028 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1029 | |
3c69da40 | 1030 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1031 | |
3c69da40 PA |
1032 | static struct cmd_list_element *remote_set_cmdlist; |
1033 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1034 | |
3c69da40 | 1035 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1036 | |
3c69da40 PA |
1037 | static int use_range_stepping = 1; |
1038 | ||
1039 | /* The max number of chars in debug output. The rest of chars are | |
1040 | omitted. */ | |
1041 | ||
1042 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
ea9c271d | 1043 | |
7aabaf9d SM |
1044 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1045 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1046 | { |
7aabaf9d SM |
1047 | std::string extra; |
1048 | std::string name; | |
1049 | int core = -1; | |
799a2abe | 1050 | |
f6327dcb KB |
1051 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1052 | sequence of bytes. */ | |
7aabaf9d | 1053 | gdb::byte_vector thread_handle; |
f6327dcb | 1054 | |
799a2abe | 1055 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1056 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1057 | |
1058 | /* This is set to the data address of the access causing the target | |
1059 | to stop for a watchpoint. */ | |
7aabaf9d | 1060 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
1061 | |
1062 | /* Fields used by the vCont action coalescing implemented in | |
1063 | remote_resume / remote_commit_resume. remote_resume stores each | |
1064 | thread's last resume request in these fields, so that a later | |
1065 | remote_commit_resume knows which is the proper action for this | |
1066 | thread to include in the vCont packet. */ | |
1067 | ||
1068 | /* True if the last target_resume call for this thread was a step | |
1069 | request, false if a continue request. */ | |
7aabaf9d | 1070 | int last_resume_step = 0; |
85ad3aaf PA |
1071 | |
1072 | /* The signal specified in the last target_resume call for this | |
1073 | thread. */ | |
7aabaf9d | 1074 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
1075 | |
1076 | /* Whether this thread was already vCont-resumed on the remote | |
1077 | side. */ | |
7aabaf9d | 1078 | int vcont_resumed = 0; |
dc146f7c VP |
1079 | }; |
1080 | ||
de44f5a7 | 1081 | remote_state::remote_state () |
8d64371b | 1082 | : buf (400) |
de44f5a7 | 1083 | { |
de44f5a7 PA |
1084 | } |
1085 | ||
1086 | remote_state::~remote_state () | |
1087 | { | |
1088 | xfree (this->last_pass_packet); | |
1089 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1090 | xfree (this->finished_object); |
1091 | xfree (this->finished_annex); | |
cf792862 TT |
1092 | } |
1093 | ||
35b1e5cc SS |
1094 | /* Utility: generate error from an incoming stub packet. */ |
1095 | static void | |
1096 | trace_error (char *buf) | |
1097 | { | |
1098 | if (*buf++ != 'E') | |
1099 | return; /* not an error msg */ | |
1100 | switch (*buf) | |
1101 | { | |
1102 | case '1': /* malformed packet error */ | |
1103 | if (*++buf == '0') /* general case: */ | |
1104 | error (_("remote.c: error in outgoing packet.")); | |
1105 | else | |
1106 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1107 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1108 | default: |
1109 | error (_("Target returns error code '%s'."), buf); | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1114 | |
6b8edb51 PA |
1115 | char * |
1116 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1117 | { |
b6bb3468 PA |
1118 | struct remote_state *rs = get_remote_state (); |
1119 | ||
35b1e5cc SS |
1120 | do /* Loop on reply from remote stub. */ |
1121 | { | |
1122 | char *buf; | |
a744cf53 | 1123 | |
0df8b418 | 1124 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1125 | getpkt (&rs->buf, 0); |
1126 | buf = rs->buf.data (); | |
ad91cd99 | 1127 | if (buf[0] == 'E') |
35b1e5cc | 1128 | trace_error (buf); |
61012eef | 1129 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1130 | { |
1131 | ULONGEST ul; | |
1132 | CORE_ADDR from, to, org_to; | |
256642e8 | 1133 | const char *p, *pp; |
dde08ee1 | 1134 | int adjusted_size = 0; |
7556d4a4 | 1135 | int relocated = 0; |
dde08ee1 PA |
1136 | |
1137 | p = buf + strlen ("qRelocInsn:"); | |
1138 | pp = unpack_varlen_hex (p, &ul); | |
1139 | if (*pp != ';') | |
cb91c06a | 1140 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1141 | from = ul; |
1142 | ||
1143 | p = pp + 1; | |
a9cbf802 | 1144 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1145 | to = ul; |
1146 | ||
1147 | org_to = to; | |
1148 | ||
492d29ea | 1149 | TRY |
dde08ee1 | 1150 | { |
f5656ead | 1151 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1152 | relocated = 1; |
dde08ee1 | 1153 | } |
492d29ea | 1154 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
1155 | { |
1156 | if (ex.error == MEMORY_ERROR) | |
1157 | { | |
1158 | /* Propagate memory errors silently back to the | |
1159 | target. The stub may have limited the range of | |
1160 | addresses we can write to, for example. */ | |
1161 | } | |
1162 | else | |
1163 | { | |
1164 | /* Something unexpectedly bad happened. Be verbose | |
1165 | so we can tell what, and propagate the error back | |
1166 | to the stub, so it doesn't get stuck waiting for | |
1167 | a response. */ | |
1168 | exception_fprintf (gdb_stderr, ex, | |
1169 | _("warning: relocating instruction: ")); | |
1170 | } | |
1171 | putpkt ("E01"); | |
1172 | } | |
492d29ea | 1173 | END_CATCH |
7556d4a4 PA |
1174 | |
1175 | if (relocated) | |
dde08ee1 PA |
1176 | { |
1177 | adjusted_size = to - org_to; | |
1178 | ||
8d64371b | 1179 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1180 | putpkt (buf); |
1181 | } | |
dde08ee1 | 1182 | } |
ad91cd99 | 1183 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1184 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1185 | else | |
0df8b418 | 1186 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1187 | } |
1188 | while (1); | |
1189 | } | |
3c3bea1c | 1190 | |
9d6eea31 PA |
1191 | struct remote_arch_state * |
1192 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1193 | { |
43c3a0e4 PA |
1194 | remote_arch_state *rsa; |
1195 | ||
1196 | auto it = this->m_arch_states.find (gdbarch); | |
1197 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1198 | { |
43c3a0e4 PA |
1199 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1200 | std::forward_as_tuple (gdbarch), | |
1201 | std::forward_as_tuple (gdbarch)); | |
1202 | rsa = &p.first->second; | |
9d6eea31 PA |
1203 | |
1204 | /* Make sure that the packet buffer is plenty big enough for | |
1205 | this architecture. */ | |
8d64371b TT |
1206 | if (this->buf.size () < rsa->remote_packet_size) |
1207 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1208 | } |
43c3a0e4 PA |
1209 | else |
1210 | rsa = &it->second; | |
1211 | ||
1212 | return rsa; | |
d01949b6 AC |
1213 | } |
1214 | ||
0b83947e DJ |
1215 | /* Fetch the global remote target state. */ |
1216 | ||
6b8edb51 PA |
1217 | remote_state * |
1218 | remote_target::get_remote_state () | |
0b83947e DJ |
1219 | { |
1220 | /* Make sure that the remote architecture state has been | |
1221 | initialized, because doing so might reallocate rs->buf. Any | |
1222 | function which calls getpkt also needs to be mindful of changes | |
1223 | to rs->buf, but this call limits the number of places which run | |
1224 | into trouble. */ | |
3c69da40 | 1225 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1226 | |
3c69da40 | 1227 | return &m_remote_state; |
0b83947e DJ |
1228 | } |
1229 | ||
94585166 DB |
1230 | /* Cleanup routine for the remote module's pspace data. */ |
1231 | ||
1232 | static void | |
1233 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
1234 | { | |
19ba03f4 | 1235 | char *remote_exec_file = (char *) arg; |
94585166 DB |
1236 | |
1237 | xfree (remote_exec_file); | |
1238 | } | |
1239 | ||
1240 | /* Fetch the remote exec-file from the current program space. */ | |
1241 | ||
1242 | static const char * | |
1243 | get_remote_exec_file (void) | |
1244 | { | |
1245 | char *remote_exec_file; | |
1246 | ||
19ba03f4 SM |
1247 | remote_exec_file |
1248 | = (char *) program_space_data (current_program_space, | |
1249 | remote_pspace_data); | |
94585166 DB |
1250 | if (remote_exec_file == NULL) |
1251 | return ""; | |
1252 | ||
1253 | return remote_exec_file; | |
1254 | } | |
1255 | ||
1256 | /* Set the remote exec file for PSPACE. */ | |
1257 | ||
1258 | static void | |
1259 | set_pspace_remote_exec_file (struct program_space *pspace, | |
1260 | char *remote_exec_file) | |
1261 | { | |
19ba03f4 | 1262 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
1263 | |
1264 | xfree (old_file); | |
1265 | set_program_space_data (pspace, remote_pspace_data, | |
1266 | xstrdup (remote_exec_file)); | |
1267 | } | |
1268 | ||
1269 | /* The "set/show remote exec-file" set command hook. */ | |
1270 | ||
1271 | static void | |
eb4c3f4a | 1272 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1273 | struct cmd_list_element *c) |
1274 | { | |
1275 | gdb_assert (remote_exec_file_var != NULL); | |
1276 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1277 | } | |
1278 | ||
1279 | /* The "set/show remote exec-file" show command hook. */ | |
1280 | ||
1281 | static void | |
1282 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1283 | struct cmd_list_element *cmd, const char *value) | |
1284 | { | |
1285 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
1286 | } | |
1287 | ||
74ca34ce DJ |
1288 | static int |
1289 | compare_pnums (const void *lhs_, const void *rhs_) | |
1290 | { | |
19ba03f4 SM |
1291 | const struct packet_reg * const *lhs |
1292 | = (const struct packet_reg * const *) lhs_; | |
1293 | const struct packet_reg * const *rhs | |
1294 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
1295 | |
1296 | if ((*lhs)->pnum < (*rhs)->pnum) | |
1297 | return -1; | |
1298 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
1299 | return 0; | |
1300 | else | |
1301 | return 1; | |
1302 | } | |
1303 | ||
c21236dc PA |
1304 | static int |
1305 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1306 | { |
74ca34ce | 1307 | int regnum, num_remote_regs, offset; |
74ca34ce | 1308 | struct packet_reg **remote_regs; |
ea9c271d | 1309 | |
4a22f64d | 1310 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1311 | { |
c21236dc | 1312 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1313 | |
4a22f64d | 1314 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1315 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1316 | r->pnum = -1; | |
1317 | else | |
1318 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1319 | ||
b323314b | 1320 | r->regnum = regnum; |
74ca34ce DJ |
1321 | } |
1322 | ||
1323 | /* Define the g/G packet format as the contents of each register | |
1324 | with a remote protocol number, in order of ascending protocol | |
1325 | number. */ | |
1326 | ||
224c3ddb | 1327 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1328 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1329 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1330 | regnum++) |
c21236dc PA |
1331 | if (regs[regnum].pnum != -1) |
1332 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1333 | |
74ca34ce DJ |
1334 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
1335 | compare_pnums); | |
1336 | ||
1337 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1338 | { | |
1339 | remote_regs[regnum]->in_g_packet = 1; | |
1340 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1341 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1342 | } |
1343 | ||
c21236dc PA |
1344 | return offset; |
1345 | } | |
1346 | ||
1347 | /* Given the architecture described by GDBARCH, return the remote | |
1348 | protocol register's number and the register's offset in the g/G | |
1349 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1350 | If the target does not have a mapping for REGNUM, return false, | |
1351 | otherwise, return true. */ | |
1352 | ||
1353 | int | |
1354 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1355 | int *pnum, int *poffset) | |
1356 | { | |
c21236dc PA |
1357 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1358 | ||
b80406ac | 1359 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1360 | |
b80406ac | 1361 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1362 | |
1363 | *pnum = regs[regnum].pnum; | |
1364 | *poffset = regs[regnum].offset; | |
1365 | ||
c21236dc PA |
1366 | return *pnum != -1; |
1367 | } | |
1368 | ||
9d6eea31 | 1369 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1370 | { |
c21236dc PA |
1371 | /* Use the architecture to build a regnum<->pnum table, which will be |
1372 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1373 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1374 | |
74ca34ce DJ |
1375 | /* Record the maximum possible size of the g packet - it may turn out |
1376 | to be smaller. */ | |
9d6eea31 PA |
1377 | this->sizeof_g_packet |
1378 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1379 | |
0df8b418 | 1380 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1381 | remote stubs have a hardwired buffer size of 400 bytes |
1382 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1383 | as the maximum packet-size to ensure that the packet and an extra | |
1384 | NUL character can always fit in the buffer. This stops GDB | |
1385 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1386 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1387 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1388 | |
ea9c271d | 1389 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1390 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1391 | |
1392 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1393 | default, adjust the size accordingly. Remember that each byte is |
1394 | encoded as two characters. 32 is the overhead for the packet | |
1395 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1396 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1397 | little. */ |
9d6eea31 PA |
1398 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1399 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1400 | } |
1401 | ||
6b8edb51 PA |
1402 | /* Get a pointer to the current remote target. If not connected to a |
1403 | remote target, return NULL. */ | |
1404 | ||
1405 | static remote_target * | |
1406 | get_current_remote_target () | |
1407 | { | |
1408 | target_ops *proc_target = find_target_at (process_stratum); | |
1409 | return dynamic_cast<remote_target *> (proc_target); | |
1410 | } | |
1411 | ||
ea9c271d DJ |
1412 | /* Return the current allowed size of a remote packet. This is |
1413 | inferred from the current architecture, and should be used to | |
1414 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1415 | long |
1416 | remote_target::get_remote_packet_size () | |
ea9c271d | 1417 | { |
be2a5f71 | 1418 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1419 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1420 | |
be2a5f71 DJ |
1421 | if (rs->explicit_packet_size) |
1422 | return rs->explicit_packet_size; | |
1423 | ||
ea9c271d | 1424 | return rsa->remote_packet_size; |
d01949b6 AC |
1425 | } |
1426 | ||
ad10f812 | 1427 | static struct packet_reg * |
5cd63fda PA |
1428 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1429 | long regnum) | |
ad10f812 | 1430 | { |
5cd63fda | 1431 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1432 | return NULL; |
1433 | else | |
ad10f812 | 1434 | { |
ea9c271d | 1435 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1436 | |
b323314b AC |
1437 | gdb_assert (r->regnum == regnum); |
1438 | return r; | |
ad10f812 | 1439 | } |
ad10f812 AC |
1440 | } |
1441 | ||
1442 | static struct packet_reg * | |
5cd63fda PA |
1443 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1444 | LONGEST pnum) | |
ad10f812 | 1445 | { |
b323314b | 1446 | int i; |
a744cf53 | 1447 | |
5cd63fda | 1448 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1449 | { |
ea9c271d | 1450 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1451 | |
b323314b AC |
1452 | if (r->pnum == pnum) |
1453 | return r; | |
ad10f812 AC |
1454 | } |
1455 | return NULL; | |
d01949b6 AC |
1456 | } |
1457 | ||
9a7071a8 JB |
1458 | /* Allow the user to specify what sequence to send to the remote |
1459 | when he requests a program interruption: Although ^C is usually | |
1460 | what remote systems expect (this is the default, here), it is | |
1461 | sometimes preferable to send a break. On other systems such | |
1462 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1463 | is required in order to interrupt the execution. */ | |
1464 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1465 | const char interrupt_sequence_break[] = "BREAK"; | |
1466 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1467 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1468 | { |
1469 | interrupt_sequence_control_c, | |
1470 | interrupt_sequence_break, | |
1471 | interrupt_sequence_break_g, | |
1472 | NULL | |
1473 | }; | |
1474 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1475 | ||
1476 | static void | |
1477 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1478 | struct cmd_list_element *c, | |
1479 | const char *value) | |
1480 | { | |
1481 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1482 | fprintf_filtered (file, | |
1483 | _("Send the ASCII ETX character (Ctrl-c) " | |
1484 | "to the remote target to interrupt the " | |
1485 | "execution of the program.\n")); | |
1486 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1487 | fprintf_filtered (file, | |
1488 | _("send a break signal to the remote target " | |
1489 | "to interrupt the execution of the program.\n")); | |
1490 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1491 | fprintf_filtered (file, | |
1492 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1493 | "the remote target to interrupt the execution " | |
1494 | "of Linux kernel.\n")); | |
1495 | else | |
1496 | internal_error (__FILE__, __LINE__, | |
1497 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1498 | interrupt_sequence_mode); | |
1499 | } | |
6426a772 | 1500 | |
9a7071a8 JB |
1501 | /* This boolean variable specifies whether interrupt_sequence is sent |
1502 | to the remote target when gdb connects to it. | |
1503 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1504 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
1505 | static int interrupt_on_connect = 0; | |
c906108c | 1506 | |
9a7071a8 JB |
1507 | /* This variable is used to implement the "set/show remotebreak" commands. |
1508 | Since these commands are now deprecated in favor of "set/show remote | |
1509 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
1510 | static int remote_break; |
1511 | ||
9a7071a8 | 1512 | static void |
eb4c3f4a | 1513 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1514 | { |
1515 | if (remote_break) | |
1516 | interrupt_sequence_mode = interrupt_sequence_break; | |
1517 | else | |
1518 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1519 | } | |
1520 | ||
1521 | static void | |
1522 | show_remotebreak (struct ui_file *file, int from_tty, | |
1523 | struct cmd_list_element *c, | |
1524 | const char *value) | |
1525 | { | |
1526 | } | |
1527 | ||
c906108c SS |
1528 | /* This variable sets the number of bits in an address that are to be |
1529 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1530 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1531 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1532 | initial implementation of remote.c restricted the address sent in | |
1533 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1534 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1535 | address was never sent. Since fixing this bug may cause a break in | |
1536 | some remote targets this variable is principly provided to | |
23860348 | 1537 | facilitate backward compatibility. */ |
c906108c | 1538 | |
883b9c6c | 1539 | static unsigned int remote_address_size; |
c906108c | 1540 | |
11cf8741 | 1541 | \f |
11cf8741 | 1542 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1543 | memory read/write packet. MIN (rsa->remote_packet_size, |
1544 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1545 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1546 | (speed up transfers). The variables ``preferred_*'' (the user |
1547 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1548 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1549 | |
1550 | struct memory_packet_config | |
1551 | { | |
a121b7c1 | 1552 | const char *name; |
11cf8741 JM |
1553 | long size; |
1554 | int fixed_p; | |
1555 | }; | |
1556 | ||
cc0be08f PA |
1557 | /* The default max memory-write-packet-size, when the setting is |
1558 | "fixed". The 16k is historical. (It came from older GDB's using | |
1559 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1560 | don't cope very well with large alloca calls.) */ | |
1561 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1562 | |
1563 | /* The minimum remote packet size for memory transfers. Ensures we | |
1564 | can write at least one byte. */ | |
1565 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1566 | ||
cc0be08f PA |
1567 | /* Get the memory packet size, assuming it is fixed. */ |
1568 | ||
1569 | static long | |
1570 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1571 | { | |
1572 | gdb_assert (config->fixed_p); | |
1573 | ||
1574 | if (config->size <= 0) | |
1575 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1576 | else | |
1577 | return config->size; | |
1578 | } | |
1579 | ||
11cf8741 JM |
1580 | /* Compute the current size of a read/write packet. Since this makes |
1581 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1582 | ||
6b8edb51 PA |
1583 | long |
1584 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1585 | { |
d01949b6 | 1586 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1587 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1588 | |
11cf8741 JM |
1589 | long what_they_get; |
1590 | if (config->fixed_p) | |
cc0be08f | 1591 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1592 | else |
1593 | { | |
ea9c271d | 1594 | what_they_get = get_remote_packet_size (); |
23860348 | 1595 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1596 | if (config->size > 0 |
1597 | && what_they_get > config->size) | |
1598 | what_they_get = config->size; | |
be2a5f71 DJ |
1599 | |
1600 | /* Limit it to the size of the targets ``g'' response unless we have | |
1601 | permission from the stub to use a larger packet size. */ | |
1602 | if (rs->explicit_packet_size == 0 | |
1603 | && rsa->actual_register_packet_size > 0 | |
1604 | && what_they_get > rsa->actual_register_packet_size) | |
1605 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1606 | } |
a5c0808e PA |
1607 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1608 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1609 | |
1610 | /* Make sure there is room in the global buffer for this packet | |
1611 | (including its trailing NUL byte). */ | |
8d64371b TT |
1612 | if (rs->buf.size () < what_they_get + 1) |
1613 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1614 | |
11cf8741 JM |
1615 | return what_they_get; |
1616 | } | |
1617 | ||
0df8b418 | 1618 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1619 | something really big then do a sanity check. */ |
11cf8741 JM |
1620 | |
1621 | static void | |
ac88e2de | 1622 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1623 | { |
1624 | int fixed_p = config->fixed_p; | |
1625 | long size = config->size; | |
a744cf53 | 1626 | |
11cf8741 | 1627 | if (args == NULL) |
8a3fe4f8 | 1628 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1629 | else if (strcmp (args, "hard") == 0 |
1630 | || strcmp (args, "fixed") == 0) | |
1631 | fixed_p = 1; | |
1632 | else if (strcmp (args, "soft") == 0 | |
1633 | || strcmp (args, "limit") == 0) | |
1634 | fixed_p = 0; | |
1635 | else | |
1636 | { | |
1637 | char *end; | |
a744cf53 | 1638 | |
11cf8741 JM |
1639 | size = strtoul (args, &end, 0); |
1640 | if (args == end) | |
8a3fe4f8 | 1641 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1642 | |
1643 | /* Instead of explicitly capping the size of a packet to or | |
1644 | disallowing it, the user is allowed to set the size to | |
1645 | something arbitrarily large. */ | |
11cf8741 | 1646 | } |
a5c0808e | 1647 | |
23860348 | 1648 | /* Extra checks? */ |
11cf8741 JM |
1649 | if (fixed_p && !config->fixed_p) |
1650 | { | |
cc0be08f PA |
1651 | /* So that the query shows the correct value. */ |
1652 | long query_size = (size <= 0 | |
1653 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1654 | : size); | |
1655 | ||
e2e0b3e5 AC |
1656 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1657 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1658 | config->name, query_size)) |
8a3fe4f8 | 1659 | error (_("Packet size not changed.")); |
11cf8741 | 1660 | } |
23860348 | 1661 | /* Update the config. */ |
11cf8741 JM |
1662 | config->fixed_p = fixed_p; |
1663 | config->size = size; | |
1664 | } | |
1665 | ||
1666 | static void | |
1667 | show_memory_packet_size (struct memory_packet_config *config) | |
1668 | { | |
cc0be08f PA |
1669 | if (config->size == 0) |
1670 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1671 | else | |
1672 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1673 | if (config->fixed_p) |
a3f17187 | 1674 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1675 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1676 | else |
cc0be08f | 1677 | { |
6b8edb51 | 1678 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1679 | |
6b8edb51 | 1680 | if (remote != NULL) |
cc0be08f | 1681 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1682 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1683 | else |
1684 | puts_filtered ("The actual limit will be further reduced " | |
1685 | "dependent on the target.\n"); | |
1686 | } | |
11cf8741 JM |
1687 | } |
1688 | ||
1689 | static struct memory_packet_config memory_write_packet_config = | |
1690 | { | |
1691 | "memory-write-packet-size", | |
1692 | }; | |
1693 | ||
1694 | static void | |
ac88e2de | 1695 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1696 | { |
1697 | set_memory_packet_size (args, &memory_write_packet_config); | |
1698 | } | |
1699 | ||
1700 | static void | |
ac88e2de | 1701 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1702 | { |
1703 | show_memory_packet_size (&memory_write_packet_config); | |
1704 | } | |
1705 | ||
055303e2 AB |
1706 | /* Show the number of hardware watchpoints that can be used. */ |
1707 | ||
1708 | static void | |
1709 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1710 | struct cmd_list_element *c, | |
1711 | const char *value) | |
1712 | { | |
1713 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1714 | "watchpoints is %s.\n"), value); | |
1715 | } | |
1716 | ||
1717 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1718 | ||
1719 | static void | |
1720 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1721 | struct cmd_list_element *c, | |
1722 | const char *value) | |
1723 | { | |
1724 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1725 | "hardware watchpoint is %s.\n"), value); | |
1726 | } | |
1727 | ||
1728 | /* Show the number of hardware breakpoints that can be used. */ | |
1729 | ||
1730 | static void | |
1731 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1732 | struct cmd_list_element *c, | |
1733 | const char *value) | |
1734 | { | |
1735 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1736 | "breakpoints is %s.\n"), value); | |
1737 | } | |
1738 | ||
6b8edb51 PA |
1739 | long |
1740 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1741 | { |
1742 | return get_memory_packet_size (&memory_write_packet_config); | |
1743 | } | |
1744 | ||
1745 | static struct memory_packet_config memory_read_packet_config = | |
1746 | { | |
1747 | "memory-read-packet-size", | |
1748 | }; | |
1749 | ||
1750 | static void | |
ac88e2de | 1751 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1752 | { |
1753 | set_memory_packet_size (args, &memory_read_packet_config); | |
1754 | } | |
1755 | ||
1756 | static void | |
ac88e2de | 1757 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1758 | { |
1759 | show_memory_packet_size (&memory_read_packet_config); | |
1760 | } | |
1761 | ||
6b8edb51 PA |
1762 | long |
1763 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1764 | { |
1765 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1766 | |
11cf8741 JM |
1767 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1768 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1769 | increased beyond this. */ |
1770 | if (size > get_remote_packet_size ()) | |
1771 | size = get_remote_packet_size (); | |
11cf8741 JM |
1772 | return size; |
1773 | } | |
1774 | ||
11cf8741 | 1775 | \f |
5a2468f5 | 1776 | |
5a2468f5 JM |
1777 | struct packet_config |
1778 | { | |
bb572ddd DJ |
1779 | const char *name; |
1780 | const char *title; | |
4082afcc PA |
1781 | |
1782 | /* If auto, GDB auto-detects support for this packet or feature, | |
1783 | either through qSupported, or by trying the packet and looking | |
1784 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1785 | packet. If false, the packet is disabled. Configs that don't |
1786 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1787 | enum auto_boolean detect; |
4082afcc PA |
1788 | |
1789 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1790 | enum packet_support support; |
1791 | }; | |
1792 | ||
4082afcc PA |
1793 | static enum packet_support packet_config_support (struct packet_config *config); |
1794 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1795 | |
1796 | static void | |
fba45db2 | 1797 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1798 | { |
a121b7c1 | 1799 | const char *support = "internal-error"; |
a744cf53 | 1800 | |
4082afcc | 1801 | switch (packet_config_support (config)) |
5a2468f5 JM |
1802 | { |
1803 | case PACKET_ENABLE: | |
1804 | support = "enabled"; | |
1805 | break; | |
1806 | case PACKET_DISABLE: | |
1807 | support = "disabled"; | |
1808 | break; | |
1809 | case PACKET_SUPPORT_UNKNOWN: | |
1810 | support = "unknown"; | |
1811 | break; | |
1812 | } | |
1813 | switch (config->detect) | |
1814 | { | |
7f19b9a2 | 1815 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1816 | printf_filtered (_("Support for the `%s' packet " |
1817 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1818 | config->name, support); |
5a2468f5 | 1819 | break; |
7f19b9a2 AC |
1820 | case AUTO_BOOLEAN_TRUE: |
1821 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1822 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1823 | config->name, support); | |
8e248173 | 1824 | break; |
5a2468f5 JM |
1825 | } |
1826 | } | |
1827 | ||
1828 | static void | |
bb572ddd DJ |
1829 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1830 | const char *title, int legacy) | |
d471ea57 | 1831 | { |
5a2468f5 JM |
1832 | char *set_doc; |
1833 | char *show_doc; | |
d471ea57 | 1834 | char *cmd_name; |
3ed07be4 | 1835 | |
5a2468f5 JM |
1836 | config->name = name; |
1837 | config->title = title; | |
b435e160 AC |
1838 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1839 | name, title); | |
3e43a32a MS |
1840 | show_doc = xstrprintf ("Show current use of remote " |
1841 | "protocol `%s' (%s) packet", | |
b435e160 | 1842 | name, title); |
d471ea57 | 1843 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1844 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1845 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1846 | &config->detect, set_doc, |
1847 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1848 | NULL, |
bb572ddd DJ |
1849 | show_remote_protocol_packet_cmd, |
1850 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1851 | /* The command code copies the documentation strings. */ |
1852 | xfree (set_doc); | |
1853 | xfree (show_doc); | |
23860348 | 1854 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1855 | if (legacy) |
1856 | { | |
1857 | char *legacy_name; | |
a744cf53 | 1858 | |
b435e160 | 1859 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1860 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1861 | &remote_set_cmdlist); |
d471ea57 | 1862 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1863 | &remote_show_cmdlist); |
d471ea57 | 1864 | } |
5a2468f5 JM |
1865 | } |
1866 | ||
d471ea57 | 1867 | static enum packet_result |
a76d924d | 1868 | packet_check_result (const char *buf) |
5a2468f5 | 1869 | { |
d471ea57 | 1870 | if (buf[0] != '\0') |
5a2468f5 | 1871 | { |
d471ea57 | 1872 | /* The stub recognized the packet request. Check that the |
23860348 | 1873 | operation succeeded. */ |
a76d924d DJ |
1874 | if (buf[0] == 'E' |
1875 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1876 | && buf[3] == '\0') | |
1877 | /* "Enn" - definitly an error. */ | |
1878 | return PACKET_ERROR; | |
1879 | ||
1880 | /* Always treat "E." as an error. This will be used for | |
1881 | more verbose error messages, such as E.memtypes. */ | |
1882 | if (buf[0] == 'E' && buf[1] == '.') | |
1883 | return PACKET_ERROR; | |
1884 | ||
1885 | /* The packet may or may not be OK. Just assume it is. */ | |
1886 | return PACKET_OK; | |
1887 | } | |
1888 | else | |
1889 | /* The stub does not support the packet. */ | |
1890 | return PACKET_UNKNOWN; | |
1891 | } | |
1892 | ||
8d64371b TT |
1893 | static enum packet_result |
1894 | packet_check_result (const gdb::char_vector &buf) | |
1895 | { | |
1896 | return packet_check_result (buf.data ()); | |
1897 | } | |
1898 | ||
a76d924d DJ |
1899 | static enum packet_result |
1900 | packet_ok (const char *buf, struct packet_config *config) | |
1901 | { | |
1902 | enum packet_result result; | |
1903 | ||
4082afcc PA |
1904 | if (config->detect != AUTO_BOOLEAN_TRUE |
1905 | && config->support == PACKET_DISABLE) | |
1906 | internal_error (__FILE__, __LINE__, | |
1907 | _("packet_ok: attempt to use a disabled packet")); | |
1908 | ||
a76d924d DJ |
1909 | result = packet_check_result (buf); |
1910 | switch (result) | |
1911 | { | |
1912 | case PACKET_OK: | |
1913 | case PACKET_ERROR: | |
1914 | /* The stub recognized the packet request. */ | |
4082afcc | 1915 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1916 | { |
d471ea57 AC |
1917 | if (remote_debug) |
1918 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1919 | "Packet %s (%s) is supported\n", |
1920 | config->name, config->title); | |
d471ea57 | 1921 | config->support = PACKET_ENABLE; |
d471ea57 | 1922 | } |
a76d924d DJ |
1923 | break; |
1924 | case PACKET_UNKNOWN: | |
23860348 | 1925 | /* The stub does not support the packet. */ |
4082afcc PA |
1926 | if (config->detect == AUTO_BOOLEAN_AUTO |
1927 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1928 | { |
4082afcc PA |
1929 | /* If the stub previously indicated that the packet was |
1930 | supported then there is a protocol error. */ | |
1931 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1932 | config->name, config->title); | |
1933 | } | |
1934 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1935 | { | |
1936 | /* The user set it wrong. */ | |
1937 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1938 | config->name, config->title); | |
d471ea57 | 1939 | } |
4082afcc PA |
1940 | |
1941 | if (remote_debug) | |
1942 | fprintf_unfiltered (gdb_stdlog, | |
1943 | "Packet %s (%s) is NOT supported\n", | |
1944 | config->name, config->title); | |
1945 | config->support = PACKET_DISABLE; | |
a76d924d | 1946 | break; |
5a2468f5 | 1947 | } |
a76d924d DJ |
1948 | |
1949 | return result; | |
5a2468f5 JM |
1950 | } |
1951 | ||
8d64371b TT |
1952 | static enum packet_result |
1953 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
1954 | { | |
1955 | return packet_ok (buf.data (), config); | |
1956 | } | |
1957 | ||
444abaca DJ |
1958 | enum { |
1959 | PACKET_vCont = 0, | |
1960 | PACKET_X, | |
1961 | PACKET_qSymbol, | |
1962 | PACKET_P, | |
1963 | PACKET_p, | |
1964 | PACKET_Z0, | |
1965 | PACKET_Z1, | |
1966 | PACKET_Z2, | |
1967 | PACKET_Z3, | |
1968 | PACKET_Z4, | |
15a201c8 | 1969 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1970 | PACKET_vFile_open, |
1971 | PACKET_vFile_pread, | |
1972 | PACKET_vFile_pwrite, | |
1973 | PACKET_vFile_close, | |
1974 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1975 | PACKET_vFile_readlink, |
0a93529c | 1976 | PACKET_vFile_fstat, |
0876f84a | 1977 | PACKET_qXfer_auxv, |
23181151 | 1978 | PACKET_qXfer_features, |
c78fa86a | 1979 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1980 | PACKET_qXfer_libraries, |
2268b414 | 1981 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1982 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1983 | PACKET_qXfer_spu_read, |
1984 | PACKET_qXfer_spu_write, | |
07e059b5 | 1985 | PACKET_qXfer_osdata, |
dc146f7c | 1986 | PACKET_qXfer_threads, |
0fb4aa4b | 1987 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1988 | PACKET_qXfer_traceframe_info, |
169081d0 | 1989 | PACKET_qXfer_uib, |
711e434b | 1990 | PACKET_qGetTIBAddr, |
444abaca | 1991 | PACKET_qGetTLSAddr, |
be2a5f71 | 1992 | PACKET_qSupported, |
bd3eecc3 | 1993 | PACKET_qTStatus, |
89be2091 | 1994 | PACKET_QPassSignals, |
82075af2 | 1995 | PACKET_QCatchSyscalls, |
9b224c5e | 1996 | PACKET_QProgramSignals, |
bc3b087d | 1997 | PACKET_QSetWorkingDir, |
aefd8b33 | 1998 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1999 | PACKET_QEnvironmentHexEncoded, |
2000 | PACKET_QEnvironmentReset, | |
2001 | PACKET_QEnvironmentUnset, | |
936d2992 | 2002 | PACKET_qCRC, |
08388c79 | 2003 | PACKET_qSearch_memory, |
2d717e4f DJ |
2004 | PACKET_vAttach, |
2005 | PACKET_vRun, | |
a6f3e723 | 2006 | PACKET_QStartNoAckMode, |
82f73884 | 2007 | PACKET_vKill, |
4aa995e1 PA |
2008 | PACKET_qXfer_siginfo_read, |
2009 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2010 | PACKET_qAttached, |
4082afcc PA |
2011 | |
2012 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2013 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2014 | |
2015 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2016 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2017 | |
2018 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2019 | PACKET_BreakpointCommands, |
4082afcc PA |
2020 | |
2021 | /* Support for fast tracepoints. */ | |
7a697b8d | 2022 | PACKET_FastTracepoints, |
4082afcc PA |
2023 | |
2024 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2025 | PACKET_StaticTracepoints, |
4082afcc PA |
2026 | |
2027 | /* Support for installing tracepoints while a trace experiment is | |
2028 | running. */ | |
1e4d1764 | 2029 | PACKET_InstallInTrace, |
4082afcc | 2030 | |
40ab02ce MS |
2031 | PACKET_bc, |
2032 | PACKET_bs, | |
409873ef | 2033 | PACKET_TracepointSource, |
d914c394 | 2034 | PACKET_QAllow, |
78d85199 | 2035 | PACKET_qXfer_fdpic, |
03583c20 | 2036 | PACKET_QDisableRandomization, |
d1feda86 | 2037 | PACKET_QAgent, |
f6f899bf | 2038 | PACKET_QTBuffer_size, |
9accd112 MM |
2039 | PACKET_Qbtrace_off, |
2040 | PACKET_Qbtrace_bts, | |
b20a6524 | 2041 | PACKET_Qbtrace_pt, |
9accd112 | 2042 | PACKET_qXfer_btrace, |
4082afcc PA |
2043 | |
2044 | /* Support for the QNonStop packet. */ | |
2045 | PACKET_QNonStop, | |
2046 | ||
65706a29 PA |
2047 | /* Support for the QThreadEvents packet. */ |
2048 | PACKET_QThreadEvents, | |
2049 | ||
4082afcc PA |
2050 | /* Support for multi-process extensions. */ |
2051 | PACKET_multiprocess_feature, | |
2052 | ||
2053 | /* Support for enabling and disabling tracepoints while a trace | |
2054 | experiment is running. */ | |
2055 | PACKET_EnableDisableTracepoints_feature, | |
2056 | ||
2057 | /* Support for collecting strings using the tracenz bytecode. */ | |
2058 | PACKET_tracenz_feature, | |
2059 | ||
2060 | /* Support for continuing to run a trace experiment while GDB is | |
2061 | disconnected. */ | |
2062 | PACKET_DisconnectedTracing_feature, | |
2063 | ||
2064 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2065 | PACKET_augmented_libraries_svr4_read_feature, | |
2066 | ||
f4abbc16 MM |
2067 | /* Support for the qXfer:btrace-conf:read packet. */ |
2068 | PACKET_qXfer_btrace_conf, | |
2069 | ||
d33501a5 MM |
2070 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2071 | PACKET_Qbtrace_conf_bts_size, | |
2072 | ||
f7e6eed5 PA |
2073 | /* Support for swbreak+ feature. */ |
2074 | PACKET_swbreak_feature, | |
2075 | ||
2076 | /* Support for hwbreak+ feature. */ | |
2077 | PACKET_hwbreak_feature, | |
2078 | ||
89245bc0 DB |
2079 | /* Support for fork events. */ |
2080 | PACKET_fork_event_feature, | |
2081 | ||
2082 | /* Support for vfork events. */ | |
2083 | PACKET_vfork_event_feature, | |
2084 | ||
b20a6524 MM |
2085 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2086 | PACKET_Qbtrace_conf_pt_size, | |
2087 | ||
94585166 DB |
2088 | /* Support for exec events. */ |
2089 | PACKET_exec_event_feature, | |
2090 | ||
750ce8d1 YQ |
2091 | /* Support for query supported vCont actions. */ |
2092 | PACKET_vContSupported, | |
2093 | ||
de979965 PA |
2094 | /* Support remote CTRL-C. */ |
2095 | PACKET_vCtrlC, | |
2096 | ||
f2faf941 PA |
2097 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2098 | PACKET_no_resumed, | |
2099 | ||
444abaca DJ |
2100 | PACKET_MAX |
2101 | }; | |
506fb367 | 2102 | |
444abaca | 2103 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2104 | |
f7e6eed5 PA |
2105 | /* Returns the packet's corresponding "set remote foo-packet" command |
2106 | state. See struct packet_config for more details. */ | |
2107 | ||
2108 | static enum auto_boolean | |
2109 | packet_set_cmd_state (int packet) | |
2110 | { | |
2111 | return remote_protocol_packets[packet].detect; | |
2112 | } | |
2113 | ||
4082afcc PA |
2114 | /* Returns whether a given packet or feature is supported. This takes |
2115 | into account the state of the corresponding "set remote foo-packet" | |
2116 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2117 | |
4082afcc PA |
2118 | static enum packet_support |
2119 | packet_config_support (struct packet_config *config) | |
2120 | { | |
2121 | switch (config->detect) | |
444abaca | 2122 | { |
4082afcc PA |
2123 | case AUTO_BOOLEAN_TRUE: |
2124 | return PACKET_ENABLE; | |
2125 | case AUTO_BOOLEAN_FALSE: | |
2126 | return PACKET_DISABLE; | |
2127 | case AUTO_BOOLEAN_AUTO: | |
2128 | return config->support; | |
2129 | default: | |
2130 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2131 | } |
4082afcc PA |
2132 | } |
2133 | ||
2134 | /* Same as packet_config_support, but takes the packet's enum value as | |
2135 | argument. */ | |
2136 | ||
2137 | static enum packet_support | |
2138 | packet_support (int packet) | |
2139 | { | |
2140 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2141 | ||
2142 | return packet_config_support (config); | |
dc8acb97 MS |
2143 | } |
2144 | ||
5a2468f5 | 2145 | static void |
444abaca DJ |
2146 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2147 | struct cmd_list_element *c, | |
2148 | const char *value) | |
5a2468f5 | 2149 | { |
444abaca | 2150 | struct packet_config *packet; |
5a2468f5 | 2151 | |
444abaca DJ |
2152 | for (packet = remote_protocol_packets; |
2153 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2154 | packet++) | |
2155 | { | |
2156 | if (&packet->detect == c->var) | |
2157 | { | |
2158 | show_packet_config_cmd (packet); | |
2159 | return; | |
2160 | } | |
2161 | } | |
9b20d036 | 2162 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2163 | c->name); |
5a2468f5 JM |
2164 | } |
2165 | ||
d471ea57 AC |
2166 | /* Should we try one of the 'Z' requests? */ |
2167 | ||
2168 | enum Z_packet_type | |
2169 | { | |
2170 | Z_PACKET_SOFTWARE_BP, | |
2171 | Z_PACKET_HARDWARE_BP, | |
2172 | Z_PACKET_WRITE_WP, | |
2173 | Z_PACKET_READ_WP, | |
2174 | Z_PACKET_ACCESS_WP, | |
2175 | NR_Z_PACKET_TYPES | |
2176 | }; | |
96baa820 | 2177 | |
d471ea57 | 2178 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2179 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2180 | |
7f19b9a2 | 2181 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2182 | |
2183 | static void | |
eb4c3f4a | 2184 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2185 | struct cmd_list_element *c) |
96baa820 | 2186 | { |
d471ea57 | 2187 | int i; |
a744cf53 | 2188 | |
d471ea57 | 2189 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2190 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2191 | } |
2192 | ||
2193 | static void | |
08546159 AC |
2194 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2195 | struct cmd_list_element *c, | |
2196 | const char *value) | |
96baa820 | 2197 | { |
d471ea57 | 2198 | int i; |
a744cf53 | 2199 | |
d471ea57 AC |
2200 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2201 | { | |
444abaca | 2202 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2203 | } |
96baa820 JM |
2204 | } |
2205 | ||
4082afcc PA |
2206 | /* Returns true if the multi-process extensions are in effect. */ |
2207 | ||
2208 | static int | |
2209 | remote_multi_process_p (struct remote_state *rs) | |
2210 | { | |
2211 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2212 | } | |
2213 | ||
de0d863e DB |
2214 | /* Returns true if fork events are supported. */ |
2215 | ||
2216 | static int | |
2217 | remote_fork_event_p (struct remote_state *rs) | |
2218 | { | |
2219 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2220 | } | |
2221 | ||
c269dbdb DB |
2222 | /* Returns true if vfork events are supported. */ |
2223 | ||
2224 | static int | |
2225 | remote_vfork_event_p (struct remote_state *rs) | |
2226 | { | |
2227 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2228 | } | |
2229 | ||
d46addbb DB |
2230 | /* Returns true if exec events are supported. */ |
2231 | ||
2232 | static int | |
2233 | remote_exec_event_p (struct remote_state *rs) | |
2234 | { | |
2235 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2236 | } | |
2237 | ||
cbb8991c DB |
2238 | /* Insert fork catchpoint target routine. If fork events are enabled |
2239 | then return success, nothing more to do. */ | |
2240 | ||
f6ac5f3d PA |
2241 | int |
2242 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2243 | { |
2244 | struct remote_state *rs = get_remote_state (); | |
2245 | ||
2246 | return !remote_fork_event_p (rs); | |
2247 | } | |
2248 | ||
2249 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2250 | return success. */ | |
2251 | ||
f6ac5f3d PA |
2252 | int |
2253 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2254 | { |
2255 | return 0; | |
2256 | } | |
2257 | ||
2258 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2259 | then return success, nothing more to do. */ | |
2260 | ||
f6ac5f3d PA |
2261 | int |
2262 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2263 | { |
2264 | struct remote_state *rs = get_remote_state (); | |
2265 | ||
2266 | return !remote_vfork_event_p (rs); | |
2267 | } | |
2268 | ||
2269 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2270 | return success. */ | |
2271 | ||
f6ac5f3d PA |
2272 | int |
2273 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2274 | { |
2275 | return 0; | |
2276 | } | |
2277 | ||
d46addbb DB |
2278 | /* Insert exec catchpoint target routine. If exec events are |
2279 | enabled, just return success. */ | |
2280 | ||
f6ac5f3d PA |
2281 | int |
2282 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2283 | { |
2284 | struct remote_state *rs = get_remote_state (); | |
2285 | ||
2286 | return !remote_exec_event_p (rs); | |
2287 | } | |
2288 | ||
2289 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2290 | return success. */ | |
2291 | ||
f6ac5f3d PA |
2292 | int |
2293 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2294 | { |
2295 | return 0; | |
2296 | } | |
2297 | ||
c906108c SS |
2298 | \f |
2299 | ||
79d7f229 PA |
2300 | static ptid_t magic_null_ptid; |
2301 | static ptid_t not_sent_ptid; | |
2302 | static ptid_t any_thread_ptid; | |
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 PA |
2352 | inferior * |
2353 | remote_target::remote_add_inferior (int fake_pid_p, int pid, int attached, | |
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 (); | |
2382 | inferior_appeared (inf, pid); | |
2383 | } | |
1941c569 | 2384 | |
0b16c5cf | 2385 | inf->attach_flag = attached; |
49c62f2e | 2386 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2387 | |
1b6e6f5c GB |
2388 | /* If no main executable is currently open then attempt to |
2389 | open the file that was executed to create this inferior. */ | |
835205d0 | 2390 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2391 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2392 | |
1941c569 PA |
2393 | return inf; |
2394 | } | |
2395 | ||
7aabaf9d | 2396 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
00431a78 | 2397 | static remote_thread_info *get_remote_thread_info (ptid_t ptid); |
85ad3aaf | 2398 | |
1941c569 PA |
2399 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2400 | according to RUNNING. */ | |
2401 | ||
00431a78 | 2402 | thread_info * |
6b8edb51 | 2403 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2404 | { |
b7ea362b | 2405 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2406 | struct thread_info *thread; |
b7ea362b PA |
2407 | |
2408 | /* GDB historically didn't pull threads in the initial connection | |
2409 | setup. If the remote target doesn't even have a concept of | |
2410 | threads (e.g., a bare-metal target), even if internally we | |
2411 | consider that a single-threaded target, mentioning a new thread | |
2412 | might be confusing to the user. Be silent then, preserving the | |
2413 | age old behavior. */ | |
2414 | if (rs->starting_up) | |
85ad3aaf | 2415 | thread = add_thread_silent (ptid); |
b7ea362b | 2416 | else |
85ad3aaf | 2417 | thread = add_thread (ptid); |
1941c569 | 2418 | |
7aabaf9d | 2419 | get_remote_thread_info (thread)->vcont_resumed = executing; |
0d5b594f | 2420 | set_executing (ptid, executing); |
1941c569 | 2421 | set_running (ptid, running); |
00431a78 PA |
2422 | |
2423 | return thread; | |
1941c569 PA |
2424 | } |
2425 | ||
2426 | /* Come here when we learn about a thread id from the remote target. | |
2427 | It may be the first time we hear about such thread, so take the | |
2428 | opportunity to add it to GDB's thread list. In case this is the | |
2429 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2430 | GDB's inferior list as well. EXECUTING indicates whether the |
2431 | thread is (internally) executing or stopped. */ | |
1941c569 | 2432 | |
6b8edb51 PA |
2433 | void |
2434 | remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) | |
1941c569 | 2435 | { |
0d5b594f PA |
2436 | /* In non-stop mode, we assume new found threads are (externally) |
2437 | running until proven otherwise with a stop reply. In all-stop, | |
2438 | we can only get here if all threads are stopped. */ | |
2439 | int running = target_is_non_stop_p () ? 1 : 0; | |
2440 | ||
c906108c SS |
2441 | /* If this is a new thread, add it to GDB's thread list. |
2442 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2443 | |
00431a78 PA |
2444 | thread_info *tp = find_thread_ptid (currthread); |
2445 | if (tp != NULL && tp->state == THREAD_EXITED) | |
82f73884 PA |
2446 | { |
2447 | /* We're seeing an event on a thread id we knew had exited. | |
2448 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2449 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2450 | return; |
2451 | } | |
2452 | ||
79d7f229 | 2453 | if (!in_thread_list (currthread)) |
c0a2216e | 2454 | { |
1941c569 | 2455 | struct inferior *inf = NULL; |
e99b03dc | 2456 | int pid = currthread.pid (); |
1941c569 | 2457 | |
0e998d96 | 2458 | if (inferior_ptid.is_pid () |
e99b03dc | 2459 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2460 | { |
2461 | /* inferior_ptid has no thread member yet. This can happen | |
2462 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2463 | stub doesn't support qC. This is the first stop reported | |
2464 | after an attach, so this is the main thread. Update the | |
2465 | ptid in the thread list. */ | |
f2907e49 | 2466 | if (in_thread_list (ptid_t (pid))) |
bad34192 PA |
2467 | thread_change_ptid (inferior_ptid, currthread); |
2468 | else | |
2469 | { | |
0d5b594f | 2470 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
2471 | inferior_ptid = currthread; |
2472 | } | |
dc146f7c | 2473 | return; |
c0a2216e | 2474 | } |
82f73884 | 2475 | |
d7e15655 | 2476 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2477 | { |
2478 | /* inferior_ptid is not set yet. This can happen with the | |
2479 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2480 | doesn't support qC. This is the first stop reported | |
2481 | after an attach, so this is the main thread. Update the | |
2482 | ptid in the thread list. */ | |
dc146f7c | 2483 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 2484 | return; |
c0a2216e | 2485 | } |
82f73884 | 2486 | |
29c87f7f PA |
2487 | /* When connecting to a target remote, or to a target |
2488 | extended-remote which already was debugging an inferior, we | |
2489 | may not know about it yet. Add it before adding its child | |
2490 | thread, so notifications are emitted in a sensible order. */ | |
e99b03dc | 2491 | if (find_inferior_pid (currthread.pid ()) == NULL) |
49c62f2e PA |
2492 | { |
2493 | struct remote_state *rs = get_remote_state (); | |
2494 | int fake_pid_p = !remote_multi_process_p (rs); | |
2495 | ||
2496 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2497 | currthread.pid (), -1, 1); |
49c62f2e | 2498 | } |
29c87f7f | 2499 | |
82f73884 | 2500 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2501 | thread_info *new_thr |
2502 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2503 | |
2504 | /* If we found a new inferior, let the common code do whatever | |
2505 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2506 | breakpoints), unless we're just setting up an all-stop |
2507 | connection. */ | |
1941c569 | 2508 | if (inf != NULL) |
b7ea362b PA |
2509 | { |
2510 | struct remote_state *rs = get_remote_state (); | |
2511 | ||
6efcd9a8 | 2512 | if (!rs->starting_up) |
00431a78 | 2513 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2514 | } |
c0a2216e | 2515 | } |
c906108c SS |
2516 | } |
2517 | ||
85ad3aaf | 2518 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2519 | |
7aabaf9d SM |
2520 | static remote_thread_info * |
2521 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2522 | { |
85ad3aaf | 2523 | gdb_assert (thread != NULL); |
dc146f7c | 2524 | |
85ad3aaf | 2525 | if (thread->priv == NULL) |
7aabaf9d | 2526 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2527 | |
7aabaf9d | 2528 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2529 | } |
2530 | ||
7aabaf9d SM |
2531 | static remote_thread_info * |
2532 | get_remote_thread_info (ptid_t ptid) | |
85ad3aaf | 2533 | { |
00431a78 PA |
2534 | thread_info *thr = find_thread_ptid (ptid); |
2535 | return get_remote_thread_info (thr); | |
dc146f7c VP |
2536 | } |
2537 | ||
74531fed PA |
2538 | /* Call this function as a result of |
2539 | 1) A halt indication (T packet) containing a thread id | |
2540 | 2) A direct query of currthread | |
0df8b418 | 2541 | 3) Successful execution of set thread */ |
74531fed PA |
2542 | |
2543 | static void | |
47f8a51d | 2544 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2545 | { |
47f8a51d | 2546 | rs->general_thread = currthread; |
74531fed PA |
2547 | } |
2548 | ||
89be2091 DJ |
2549 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2550 | it can simply pass through to the inferior without reporting. */ | |
2551 | ||
f6ac5f3d | 2552 | void |
adc6a863 | 2553 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2554 | { |
4082afcc | 2555 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2556 | { |
2557 | char *pass_packet, *p; | |
adc6a863 | 2558 | int count = 0; |
747dc59d | 2559 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2560 | |
adc6a863 PA |
2561 | gdb_assert (pass_signals.size () < 256); |
2562 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2563 | { |
2455069d | 2564 | if (pass_signals[i]) |
89be2091 DJ |
2565 | count++; |
2566 | } | |
224c3ddb | 2567 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2568 | strcpy (pass_packet, "QPassSignals:"); |
2569 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2570 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2571 | { |
2455069d | 2572 | if (pass_signals[i]) |
89be2091 DJ |
2573 | { |
2574 | if (i >= 16) | |
2575 | *p++ = tohex (i >> 4); | |
2576 | *p++ = tohex (i & 15); | |
2577 | if (count) | |
2578 | *p++ = ';'; | |
2579 | else | |
2580 | break; | |
2581 | count--; | |
2582 | } | |
2583 | } | |
2584 | *p = 0; | |
747dc59d | 2585 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2586 | { |
89be2091 | 2587 | putpkt (pass_packet); |
8d64371b | 2588 | getpkt (&rs->buf, 0); |
8dc5b319 | 2589 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2590 | if (rs->last_pass_packet) |
2591 | xfree (rs->last_pass_packet); | |
2592 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2593 | } |
2594 | else | |
2595 | xfree (pass_packet); | |
2596 | } | |
2597 | } | |
2598 | ||
82075af2 JS |
2599 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2600 | to report syscalls to GDB. */ | |
2601 | ||
f6ac5f3d PA |
2602 | int |
2603 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2604 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2605 | { |
b80406ac | 2606 | const char *catch_packet; |
82075af2 JS |
2607 | enum packet_result result; |
2608 | int n_sysno = 0; | |
2609 | ||
2610 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2611 | { | |
2612 | /* Not supported. */ | |
2613 | return 1; | |
2614 | } | |
2615 | ||
649a140c | 2616 | if (needed && any_count == 0) |
82075af2 | 2617 | { |
649a140c PA |
2618 | /* Count how many syscalls are to be caught. */ |
2619 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2620 | { |
649a140c | 2621 | if (syscall_counts[i] != 0) |
82075af2 JS |
2622 | n_sysno++; |
2623 | } | |
2624 | } | |
2625 | ||
2626 | if (remote_debug) | |
2627 | { | |
2628 | fprintf_unfiltered (gdb_stdlog, | |
2629 | "remote_set_syscall_catchpoint " | |
2630 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2631 | pid, needed, any_count, n_sysno); | |
2632 | } | |
2633 | ||
1b81856f | 2634 | std::string built_packet; |
82075af2 JS |
2635 | if (needed) |
2636 | { | |
2637 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2638 | characters for a sysno. If the resulting packet size is too | |
2639 | big, fallback on the non-selective packet. */ | |
2640 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2641 | built_packet.reserve (maxpktsz); |
2642 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2643 | if (any_count == 0) |
82075af2 | 2644 | { |
649a140c PA |
2645 | /* Add in each syscall to be caught. */ |
2646 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2647 | { |
649a140c PA |
2648 | if (syscall_counts[i] != 0) |
2649 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2650 | } |
2651 | } | |
1b81856f | 2652 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2653 | { |
2654 | /* catch_packet too big. Fallback to less efficient | |
2655 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2656 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2657 | } |
b80406ac | 2658 | else |
1b81856f | 2659 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2660 | } |
2661 | else | |
b80406ac | 2662 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2663 | |
b80406ac | 2664 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2665 | |
b80406ac | 2666 | putpkt (catch_packet); |
8d64371b | 2667 | getpkt (&rs->buf, 0); |
b80406ac TT |
2668 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2669 | if (result == PACKET_OK) | |
2670 | return 0; | |
2671 | else | |
2672 | return -1; | |
82075af2 JS |
2673 | } |
2674 | ||
9b224c5e PA |
2675 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2676 | signals it should pass through to the inferior when detaching. */ | |
2677 | ||
f6ac5f3d | 2678 | void |
adc6a863 | 2679 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2680 | { |
4082afcc | 2681 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2682 | { |
2683 | char *packet, *p; | |
adc6a863 | 2684 | int count = 0; |
5e4a05c4 | 2685 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2686 | |
adc6a863 PA |
2687 | gdb_assert (signals.size () < 256); |
2688 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2689 | { |
2690 | if (signals[i]) | |
2691 | count++; | |
2692 | } | |
224c3ddb | 2693 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2694 | strcpy (packet, "QProgramSignals:"); |
2695 | p = packet + strlen (packet); | |
adc6a863 | 2696 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2697 | { |
2698 | if (signal_pass_state (i)) | |
2699 | { | |
2700 | if (i >= 16) | |
2701 | *p++ = tohex (i >> 4); | |
2702 | *p++ = tohex (i & 15); | |
2703 | if (count) | |
2704 | *p++ = ';'; | |
2705 | else | |
2706 | break; | |
2707 | count--; | |
2708 | } | |
2709 | } | |
2710 | *p = 0; | |
5e4a05c4 TT |
2711 | if (!rs->last_program_signals_packet |
2712 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2713 | { |
9b224c5e | 2714 | putpkt (packet); |
8d64371b | 2715 | getpkt (&rs->buf, 0); |
8dc5b319 | 2716 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2717 | xfree (rs->last_program_signals_packet); |
2718 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2719 | } |
2720 | else | |
2721 | xfree (packet); | |
2722 | } | |
2723 | } | |
2724 | ||
79d7f229 PA |
2725 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2726 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2727 | thread. If GEN is set, set the general thread, if not, then set | |
2728 | the step/continue thread. */ | |
6b8edb51 PA |
2729 | void |
2730 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2731 | { |
d01949b6 | 2732 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2733 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2734 | char *buf = rs->buf.data (); |
2735 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2736 | |
d7e15655 | 2737 | if (state == ptid) |
c906108c SS |
2738 | return; |
2739 | ||
79d7f229 PA |
2740 | *buf++ = 'H'; |
2741 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2742 | if (ptid == magic_null_ptid) |
79d7f229 | 2743 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2744 | else if (ptid == any_thread_ptid) |
79d7f229 | 2745 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2746 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2747 | xsnprintf (buf, endbuf - buf, "-1"); |
2748 | else | |
82f73884 | 2749 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2750 | putpkt (rs->buf); |
8d64371b | 2751 | getpkt (&rs->buf, 0); |
c906108c | 2752 | if (gen) |
47f8a51d | 2753 | rs->general_thread = ptid; |
c906108c | 2754 | else |
47f8a51d | 2755 | rs->continue_thread = ptid; |
c906108c | 2756 | } |
79d7f229 | 2757 | |
6b8edb51 PA |
2758 | void |
2759 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2760 | { |
2761 | set_thread (ptid, 1); | |
2762 | } | |
2763 | ||
6b8edb51 PA |
2764 | void |
2765 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2766 | { |
2767 | set_thread (ptid, 0); | |
2768 | } | |
2769 | ||
3c9c4b83 PA |
2770 | /* Change the remote current process. Which thread within the process |
2771 | ends up selected isn't important, as long as it is the same process | |
2772 | as what INFERIOR_PTID points to. | |
2773 | ||
2774 | This comes from that fact that there is no explicit notion of | |
2775 | "selected process" in the protocol. The selected process for | |
2776 | general operations is the process the selected general thread | |
2777 | belongs to. */ | |
2778 | ||
6b8edb51 PA |
2779 | void |
2780 | remote_target::set_general_process () | |
3c9c4b83 PA |
2781 | { |
2782 | struct remote_state *rs = get_remote_state (); | |
2783 | ||
2784 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2785 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2786 | return; |
2787 | ||
2788 | /* We only need to change the remote current thread if it's pointing | |
2789 | at some other process. */ | |
e99b03dc | 2790 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2791 | set_general_thread (inferior_ptid); |
2792 | } | |
2793 | ||
c906108c | 2794 | \f |
7d1a114c PA |
2795 | /* Return nonzero if this is the main thread that we made up ourselves |
2796 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2797 | |
2798 | static int | |
f6ac5f3d | 2799 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2800 | { |
d7e15655 | 2801 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2802 | /* The main thread is always alive. */ |
2803 | return 1; | |
2804 | ||
e38504b3 | 2805 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2806 | /* The main thread is always alive. This can happen after a |
2807 | vAttach, if the remote side doesn't support | |
2808 | multi-threading. */ | |
2809 | return 1; | |
2810 | ||
7d1a114c PA |
2811 | return 0; |
2812 | } | |
2813 | ||
2814 | /* Return nonzero if the thread PTID is still alive on the remote | |
2815 | system. */ | |
2816 | ||
57810aa7 | 2817 | bool |
f6ac5f3d | 2818 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2819 | { |
2820 | struct remote_state *rs = get_remote_state (); | |
2821 | char *p, *endp; | |
2822 | ||
2823 | /* Check if this is a thread that we made up ourselves to model | |
2824 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2825 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2826 | return 1; |
2827 | ||
8d64371b TT |
2828 | p = rs->buf.data (); |
2829 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2830 | |
2831 | *p++ = 'T'; | |
2832 | write_ptid (p, endp, ptid); | |
2833 | ||
2e9f7625 | 2834 | putpkt (rs->buf); |
8d64371b | 2835 | getpkt (&rs->buf, 0); |
2e9f7625 | 2836 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2837 | } |
2838 | ||
79efa585 SM |
2839 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2840 | The thread_info object owns the memory for the name. */ | |
2841 | ||
f6ac5f3d PA |
2842 | const char * |
2843 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2844 | { |
2845 | if (info->priv != NULL) | |
a9334058 SM |
2846 | { |
2847 | const std::string &name = get_remote_thread_info (info)->name; | |
2848 | return !name.empty () ? name.c_str () : NULL; | |
2849 | } | |
79efa585 SM |
2850 | |
2851 | return NULL; | |
2852 | } | |
2853 | ||
c906108c SS |
2854 | /* About these extended threadlist and threadinfo packets. They are |
2855 | variable length packets but, the fields within them are often fixed | |
2856 | length. They are redundent enough to send over UDP as is the | |
2857 | remote protocol in general. There is a matching unit test module | |
2858 | in libstub. */ | |
2859 | ||
23860348 | 2860 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2861 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2862 | changable. */ |
cce74817 JM |
2863 | |
2864 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2865 | Plan to fix this. */ |
cce74817 | 2866 | |
23860348 | 2867 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2868 | |
9d1f7ab2 | 2869 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2870 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2871 | |
2872 | struct gdb_ext_thread_info | |
c5aa993b | 2873 | { |
23860348 | 2874 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2875 | int active; /* Has state interesting to GDB? |
23860348 | 2876 | regs, stack. */ |
2bc416ba | 2877 | char display[256]; /* Brief state display, name, |
cedea757 | 2878 | blocked/suspended. */ |
23860348 | 2879 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2880 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2881 | whatever. */ |
c5aa993b | 2882 | }; |
cce74817 JM |
2883 | |
2884 | /* The volume of remote transfers can be limited by submitting | |
2885 | a mask containing bits specifying the desired information. | |
2886 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2887 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2888 | |
2889 | #define TAG_THREADID 1 | |
2890 | #define TAG_EXISTS 2 | |
2891 | #define TAG_DISPLAY 4 | |
2892 | #define TAG_THREADNAME 8 | |
c5aa993b | 2893 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2894 | |
23860348 | 2895 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2896 | |
a14ed312 | 2897 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2898 | |
a14ed312 | 2899 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2900 | |
a14ed312 | 2901 | static char *pack_int (char *buf, int value); |
cce74817 | 2902 | |
a14ed312 | 2903 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2904 | |
a14ed312 | 2905 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2906 | |
23860348 | 2907 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2908 | |
23860348 | 2909 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2910 | |
23860348 | 2911 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2912 | |
23860348 | 2913 | static int threadref_to_int (threadref *ref); |
cce74817 | 2914 | |
23860348 | 2915 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2916 | |
23860348 | 2917 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2918 | |
2bc416ba | 2919 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2920 | threadref *id); |
cce74817 | 2921 | |
a14ed312 KB |
2922 | static char *pack_threadlist_request (char *pkt, int startflag, |
2923 | int threadcount, | |
23860348 | 2924 | threadref *nextthread); |
cce74817 | 2925 | |
23860348 | 2926 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2927 | |
82f73884 PA |
2928 | |
2929 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2930 | buffer we're allowed to write to. Returns | |
2931 | BUF+CHARACTERS_WRITTEN. */ | |
2932 | ||
6b8edb51 PA |
2933 | char * |
2934 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
2935 | { |
2936 | int pid, tid; | |
2937 | struct remote_state *rs = get_remote_state (); | |
2938 | ||
2939 | if (remote_multi_process_p (rs)) | |
2940 | { | |
e99b03dc | 2941 | pid = ptid.pid (); |
82f73884 PA |
2942 | if (pid < 0) |
2943 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2944 | else | |
2945 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2946 | } | |
e38504b3 | 2947 | tid = ptid.lwp (); |
82f73884 PA |
2948 | if (tid < 0) |
2949 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2950 | else | |
2951 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2952 | ||
2953 | return buf; | |
2954 | } | |
2955 | ||
256642e8 PA |
2956 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2957 | last parsed char. Returns null_ptid if no thread id is found, and | |
2958 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2959 | |
2960 | static ptid_t | |
256642e8 | 2961 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2962 | { |
256642e8 PA |
2963 | const char *p = buf; |
2964 | const char *pp; | |
82f73884 | 2965 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2966 | |
2967 | if (*p == 'p') | |
2968 | { | |
2969 | /* Multi-process ptid. */ | |
2970 | pp = unpack_varlen_hex (p + 1, &pid); | |
2971 | if (*pp != '.') | |
b37520b6 | 2972 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2973 | |
2974 | p = pp; | |
2975 | pp = unpack_varlen_hex (p + 1, &tid); | |
2976 | if (obuf) | |
2977 | *obuf = pp; | |
fd79271b | 2978 | return ptid_t (pid, tid, 0); |
82f73884 PA |
2979 | } |
2980 | ||
2981 | /* No multi-process. Just a tid. */ | |
2982 | pp = unpack_varlen_hex (p, &tid); | |
2983 | ||
c9f35b34 KB |
2984 | /* Return null_ptid when no thread id is found. */ |
2985 | if (p == pp) | |
2986 | { | |
2987 | if (obuf) | |
2988 | *obuf = pp; | |
2989 | return null_ptid; | |
2990 | } | |
2991 | ||
82f73884 | 2992 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2993 | what's in inferior_ptid, unless it's null at this point. If so, |
2994 | then since there's no way to know the pid of the reported | |
2995 | threads, use the magic number. */ | |
d7e15655 | 2996 | if (inferior_ptid == null_ptid) |
e99b03dc | 2997 | pid = magic_null_ptid.pid (); |
ca19bf23 | 2998 | else |
e99b03dc | 2999 | pid = inferior_ptid.pid (); |
82f73884 PA |
3000 | |
3001 | if (obuf) | |
3002 | *obuf = pp; | |
fd79271b | 3003 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3004 | } |
3005 | ||
c906108c | 3006 | static int |
fba45db2 | 3007 | stubhex (int ch) |
c906108c SS |
3008 | { |
3009 | if (ch >= 'a' && ch <= 'f') | |
3010 | return ch - 'a' + 10; | |
3011 | if (ch >= '0' && ch <= '9') | |
3012 | return ch - '0'; | |
3013 | if (ch >= 'A' && ch <= 'F') | |
3014 | return ch - 'A' + 10; | |
3015 | return -1; | |
3016 | } | |
3017 | ||
3018 | static int | |
fba45db2 | 3019 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
3020 | { |
3021 | int nibble; | |
3022 | int retval = 0; | |
3023 | ||
3024 | while (fieldlength) | |
3025 | { | |
3026 | nibble = stubhex (*buff++); | |
3027 | retval |= nibble; | |
3028 | fieldlength--; | |
3029 | if (fieldlength) | |
3030 | retval = retval << 4; | |
3031 | } | |
3032 | return retval; | |
3033 | } | |
3034 | ||
c906108c | 3035 | static char * |
fba45db2 | 3036 | unpack_nibble (char *buf, int *val) |
c906108c | 3037 | { |
b7589f7d | 3038 | *val = fromhex (*buf++); |
c906108c SS |
3039 | return buf; |
3040 | } | |
3041 | ||
c906108c | 3042 | static char * |
fba45db2 | 3043 | unpack_byte (char *buf, int *value) |
c906108c SS |
3044 | { |
3045 | *value = stub_unpack_int (buf, 2); | |
3046 | return buf + 2; | |
3047 | } | |
3048 | ||
3049 | static char * | |
fba45db2 | 3050 | pack_int (char *buf, int value) |
c906108c SS |
3051 | { |
3052 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3053 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3054 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3055 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3056 | return buf; | |
3057 | } | |
3058 | ||
3059 | static char * | |
fba45db2 | 3060 | unpack_int (char *buf, int *value) |
c906108c SS |
3061 | { |
3062 | *value = stub_unpack_int (buf, 8); | |
3063 | return buf + 8; | |
3064 | } | |
3065 | ||
23860348 | 3066 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3067 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3068 | |
3069 | static char * | |
fba45db2 | 3070 | pack_string (char *pkt, char *string) |
c906108c SS |
3071 | { |
3072 | char ch; | |
3073 | int len; | |
3074 | ||
3075 | len = strlen (string); | |
3076 | if (len > 200) | |
23860348 | 3077 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3078 | pkt = pack_hex_byte (pkt, len); |
3079 | while (len-- > 0) | |
3080 | { | |
3081 | ch = *string++; | |
3082 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3083 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3084 | *pkt++ = ch; |
3085 | } | |
3086 | return pkt; | |
3087 | } | |
3088 | #endif /* 0 (unused) */ | |
3089 | ||
3090 | static char * | |
fba45db2 | 3091 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
3092 | { |
3093 | while (length--) | |
3094 | *dest++ = *src++; | |
3095 | *dest = '\0'; | |
3096 | return src; | |
3097 | } | |
3098 | ||
3099 | static char * | |
fba45db2 | 3100 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3101 | { |
3102 | char *limit; | |
3103 | unsigned char *altid; | |
3104 | ||
3105 | altid = (unsigned char *) id; | |
3106 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3107 | while (pkt < limit) | |
3108 | pkt = pack_hex_byte (pkt, *altid++); | |
3109 | return pkt; | |
3110 | } | |
3111 | ||
3112 | ||
3113 | static char * | |
fba45db2 | 3114 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
3115 | { |
3116 | char *altref; | |
3117 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
3118 | int x, y; | |
3119 | ||
3120 | altref = (char *) id; | |
3121 | ||
3122 | while (inbuf < limit) | |
3123 | { | |
3124 | x = stubhex (*inbuf++); | |
3125 | y = stubhex (*inbuf++); | |
3126 | *altref++ = (x << 4) | y; | |
3127 | } | |
3128 | return inbuf; | |
3129 | } | |
3130 | ||
3131 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3132 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3133 | to use 64bit thread references internally. This is an adapter |
3134 | function. */ | |
3135 | ||
3136 | void | |
fba45db2 | 3137 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3138 | { |
3139 | unsigned char *scan; | |
3140 | ||
3141 | scan = (unsigned char *) id; | |
3142 | { | |
3143 | int i = 4; | |
3144 | while (i--) | |
3145 | *scan++ = 0; | |
3146 | } | |
3147 | *scan++ = (value >> 24) & 0xff; | |
3148 | *scan++ = (value >> 16) & 0xff; | |
3149 | *scan++ = (value >> 8) & 0xff; | |
3150 | *scan++ = (value & 0xff); | |
3151 | } | |
3152 | ||
3153 | static int | |
fba45db2 | 3154 | threadref_to_int (threadref *ref) |
c906108c SS |
3155 | { |
3156 | int i, value = 0; | |
3157 | unsigned char *scan; | |
3158 | ||
cfd77fa1 | 3159 | scan = *ref; |
c906108c SS |
3160 | scan += 4; |
3161 | i = 4; | |
3162 | while (i-- > 0) | |
3163 | value = (value << 8) | ((*scan++) & 0xff); | |
3164 | return value; | |
3165 | } | |
3166 | ||
3167 | static void | |
fba45db2 | 3168 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3169 | { |
3170 | int i; | |
3171 | unsigned char *csrc, *cdest; | |
3172 | ||
3173 | csrc = (unsigned char *) src; | |
3174 | cdest = (unsigned char *) dest; | |
3175 | i = 8; | |
3176 | while (i--) | |
3177 | *cdest++ = *csrc++; | |
3178 | } | |
3179 | ||
3180 | static int | |
fba45db2 | 3181 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3182 | { |
23860348 | 3183 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3184 | #if 0 |
3185 | unsigned char *srcp, *destp; | |
3186 | int i, result; | |
3187 | srcp = (char *) src; | |
3188 | destp = (char *) dest; | |
3189 | ||
3190 | result = 1; | |
3191 | while (i-- > 0) | |
3192 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3193 | return result; | |
3194 | #endif | |
3195 | return 1; | |
3196 | } | |
3197 | ||
3198 | /* | |
c5aa993b JM |
3199 | threadid:1, # always request threadid |
3200 | context_exists:2, | |
3201 | display:4, | |
3202 | unique_name:8, | |
3203 | more_display:16 | |
3204 | */ | |
c906108c SS |
3205 | |
3206 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3207 | ||
3208 | static char * | |
fba45db2 | 3209 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3210 | { |
23860348 MS |
3211 | *pkt++ = 'q'; /* Info Query */ |
3212 | *pkt++ = 'P'; /* process or thread info */ | |
3213 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3214 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3215 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3216 | return pkt; |
3217 | } | |
3218 | ||
23860348 | 3219 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3220 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3221 | add more fields as time goes by. */ |
c906108c | 3222 | |
23860348 | 3223 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3224 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3225 | fetch registers and its stack? */ |
c5aa993b | 3226 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3227 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3228 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3229 | the process. */ |
c906108c | 3230 | |
6b8edb51 PA |
3231 | int |
3232 | remote_target::remote_unpack_thread_info_response (char *pkt, | |
3233 | threadref *expectedref, | |
3234 | gdb_ext_thread_info *info) | |
c906108c | 3235 | { |
d01949b6 | 3236 | struct remote_state *rs = get_remote_state (); |
c906108c | 3237 | int mask, length; |
cfd77fa1 | 3238 | int tag; |
c906108c | 3239 | threadref ref; |
8d64371b | 3240 | char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3241 | int retval = 1; |
3242 | ||
23860348 | 3243 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3244 | info->active = 0; |
3245 | info->display[0] = '\0'; | |
3246 | info->shortname[0] = '\0'; | |
3247 | info->more_display[0] = '\0'; | |
3248 | ||
23860348 MS |
3249 | /* Assume the characters indicating the packet type have been |
3250 | stripped. */ | |
c906108c SS |
3251 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3252 | pkt = unpack_threadid (pkt, &ref); | |
3253 | ||
3254 | if (mask == 0) | |
8a3fe4f8 | 3255 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3256 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3257 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3258 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3259 | return 0; |
3260 | } | |
3261 | copy_threadref (&info->threadid, &ref); | |
3262 | ||
23860348 | 3263 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 3264 | |
23860348 MS |
3265 | /* Packets are terminated with nulls. */ |
3266 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3267 | { |
3268 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3269 | pkt = unpack_byte (pkt, &length); /* length */ |
3270 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3271 | { |
8a3fe4f8 | 3272 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3273 | retval = 0; |
3274 | break; | |
3275 | } | |
3276 | if (tag == TAG_THREADID) | |
3277 | { | |
3278 | if (length != 16) | |
3279 | { | |
8a3fe4f8 | 3280 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3281 | retval = 0; |
3282 | break; | |
3283 | } | |
3284 | pkt = unpack_threadid (pkt, &ref); | |
3285 | mask = mask & ~TAG_THREADID; | |
3286 | continue; | |
3287 | } | |
3288 | if (tag == TAG_EXISTS) | |
3289 | { | |
3290 | info->active = stub_unpack_int (pkt, length); | |
3291 | pkt += length; | |
3292 | mask = mask & ~(TAG_EXISTS); | |
3293 | if (length > 8) | |
3294 | { | |
8a3fe4f8 | 3295 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3296 | retval = 0; |
3297 | break; | |
3298 | } | |
3299 | continue; | |
3300 | } | |
3301 | if (tag == TAG_THREADNAME) | |
3302 | { | |
3303 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3304 | mask = mask & ~TAG_THREADNAME; | |
3305 | continue; | |
3306 | } | |
3307 | if (tag == TAG_DISPLAY) | |
3308 | { | |
3309 | pkt = unpack_string (pkt, &info->display[0], length); | |
3310 | mask = mask & ~TAG_DISPLAY; | |
3311 | continue; | |
3312 | } | |
3313 | if (tag == TAG_MOREDISPLAY) | |
3314 | { | |
3315 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3316 | mask = mask & ~TAG_MOREDISPLAY; | |
3317 | continue; | |
3318 | } | |
8a3fe4f8 | 3319 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3320 | break; /* Not a tag we know about. */ |
c906108c SS |
3321 | } |
3322 | return retval; | |
3323 | } | |
3324 | ||
6b8edb51 PA |
3325 | int |
3326 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3327 | int fieldset, | |
3328 | gdb_ext_thread_info *info) | |
c906108c | 3329 | { |
d01949b6 | 3330 | struct remote_state *rs = get_remote_state (); |
c906108c | 3331 | int result; |
c906108c | 3332 | |
8d64371b | 3333 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3334 | putpkt (rs->buf); |
8d64371b | 3335 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3336 | |
3337 | if (rs->buf[0] == '\0') | |
3338 | return 0; | |
3339 | ||
8d64371b | 3340 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3341 | threadid, info); |
c906108c SS |
3342 | return result; |
3343 | } | |
3344 | ||
c906108c SS |
3345 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3346 | ||
3347 | static char * | |
fba45db2 KB |
3348 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3349 | threadref *nextthread) | |
c906108c SS |
3350 | { |
3351 | *pkt++ = 'q'; /* info query packet */ | |
3352 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3353 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3354 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3355 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3356 | *pkt = '\0'; | |
3357 | return pkt; | |
3358 | } | |
3359 | ||
3360 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3361 | ||
6b8edb51 PA |
3362 | int |
3363 | remote_target::parse_threadlist_response (char *pkt, int result_limit, | |
3364 | threadref *original_echo, | |
3365 | threadref *resultlist, | |
3366 | int *doneflag) | |
c906108c | 3367 | { |
d01949b6 | 3368 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3369 | char *limit; |
3370 | int count, resultcount, done; | |
3371 | ||
3372 | resultcount = 0; | |
3373 | /* Assume the 'q' and 'M chars have been stripped. */ | |
8d64371b | 3374 | limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3375 | /* done parse past here */ |
c906108c SS |
3376 | pkt = unpack_byte (pkt, &count); /* count field */ |
3377 | pkt = unpack_nibble (pkt, &done); | |
3378 | /* The first threadid is the argument threadid. */ | |
3379 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3380 | while ((count-- > 0) && (pkt < limit)) | |
3381 | { | |
3382 | pkt = unpack_threadid (pkt, resultlist++); | |
3383 | if (resultcount++ >= result_limit) | |
3384 | break; | |
3385 | } | |
3386 | if (doneflag) | |
3387 | *doneflag = done; | |
3388 | return resultcount; | |
3389 | } | |
3390 | ||
6dc54d91 PA |
3391 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3392 | qL packet is not supported, 0 on error and 1 on success. */ | |
3393 | ||
6b8edb51 PA |
3394 | int |
3395 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3396 | int result_limit, int *done, int *result_count, | |
3397 | threadref *threadlist) | |
c906108c | 3398 | { |
d01949b6 | 3399 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3400 | int result = 1; |
3401 | ||
23860348 | 3402 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3403 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3404 | >= get_remote_packet_size ()) | |
ea9c271d | 3405 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3406 | |
8d64371b TT |
3407 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3408 | nextthread); | |
6d820c5c | 3409 | putpkt (rs->buf); |
8d64371b TT |
3410 | getpkt (&rs->buf, 0); |
3411 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3412 | { |
3413 | /* Packet not supported. */ | |
3414 | return -1; | |
3415 | } | |
3416 | ||
3417 | *result_count = | |
8d64371b | 3418 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3419 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3420 | |
0d031856 | 3421 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3422 | { |
23860348 MS |
3423 | /* FIXME: This is a good reason to drop the packet. */ |
3424 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
3425 | /* Possabilities : |
3426 | retransmit immediatly - race conditions | |
3427 | retransmit after timeout - yes | |
3428 | exit | |
3429 | wait for packet, then exit | |
3430 | */ | |
8a3fe4f8 | 3431 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3432 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3433 | } |
3434 | if (*result_count <= 0) | |
3435 | { | |
3436 | if (*done != 1) | |
3437 | { | |
8a3fe4f8 | 3438 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3439 | result = 0; |
3440 | } | |
3441 | return result; /* break; */ | |
3442 | } | |
3443 | if (*result_count > result_limit) | |
3444 | { | |
3445 | *result_count = 0; | |
8a3fe4f8 | 3446 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3447 | return 0; |
3448 | } | |
3449 | return result; | |
3450 | } | |
3451 | ||
6dc54d91 PA |
3452 | /* Fetch the list of remote threads, with the qL packet, and call |
3453 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3454 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3455 | STEPFUNCTION returns false. If the packet is not supported, | |
3456 | returns -1. */ | |
c906108c | 3457 | |
6b8edb51 PA |
3458 | int |
3459 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3460 | void *context, int looplimit) | |
c906108c | 3461 | { |
0d031856 | 3462 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3463 | int done, i, result_count; |
3464 | int startflag = 1; | |
3465 | int result = 1; | |
3466 | int loopcount = 0; | |
c906108c SS |
3467 | |
3468 | done = 0; | |
3469 | while (!done) | |
3470 | { | |
3471 | if (loopcount++ > looplimit) | |
3472 | { | |
3473 | result = 0; | |
8a3fe4f8 | 3474 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3475 | break; |
3476 | } | |
6dc54d91 PA |
3477 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3478 | MAXTHREADLISTRESULTS, | |
3479 | &done, &result_count, | |
3480 | rs->resultthreadlist); | |
3481 | if (result <= 0) | |
3482 | break; | |
23860348 | 3483 | /* Clear for later iterations. */ |
c906108c SS |
3484 | startflag = 0; |
3485 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3486 | if (result_count >= 1) | |
0d031856 TT |
3487 | copy_threadref (&rs->nextthread, |
3488 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3489 | i = 0; |
3490 | while (result_count--) | |
6dc54d91 PA |
3491 | { |
3492 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3493 | { | |
3494 | result = 0; | |
3495 | break; | |
3496 | } | |
3497 | } | |
c906108c SS |
3498 | } |
3499 | return result; | |
3500 | } | |
3501 | ||
6dc54d91 PA |
3502 | /* A thread found on the remote target. */ |
3503 | ||
21fe1c75 | 3504 | struct thread_item |
6dc54d91 | 3505 | { |
21fe1c75 SM |
3506 | explicit thread_item (ptid_t ptid_) |
3507 | : ptid (ptid_) | |
3508 | {} | |
3509 | ||
3510 | thread_item (thread_item &&other) = default; | |
3511 | thread_item &operator= (thread_item &&other) = default; | |
3512 | ||
3513 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3514 | ||
6dc54d91 PA |
3515 | /* The thread's PTID. */ |
3516 | ptid_t ptid; | |
3517 | ||
21fe1c75 SM |
3518 | /* The thread's extra info. */ |
3519 | std::string extra; | |
6dc54d91 | 3520 | |
21fe1c75 SM |
3521 | /* The thread's name. */ |
3522 | std::string name; | |
79efa585 | 3523 | |
6dc54d91 | 3524 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3525 | int core = -1; |
f6327dcb KB |
3526 | |
3527 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3528 | gdb::byte_vector thread_handle; |
21fe1c75 | 3529 | }; |
6dc54d91 PA |
3530 | |
3531 | /* Context passed around to the various methods listing remote | |
3532 | threads. As new threads are found, they're added to the ITEMS | |
3533 | vector. */ | |
3534 | ||
3535 | struct threads_listing_context | |
3536 | { | |
21fe1c75 SM |
3537 | /* Return true if this object contains an entry for a thread with ptid |
3538 | PTID. */ | |
6dc54d91 | 3539 | |
21fe1c75 SM |
3540 | bool contains_thread (ptid_t ptid) const |
3541 | { | |
3542 | auto match_ptid = [&] (const thread_item &item) | |
3543 | { | |
3544 | return item.ptid == ptid; | |
3545 | }; | |
80134cf5 | 3546 | |
21fe1c75 SM |
3547 | auto it = std::find_if (this->items.begin (), |
3548 | this->items.end (), | |
3549 | match_ptid); | |
80134cf5 | 3550 | |
21fe1c75 SM |
3551 | return it != this->items.end (); |
3552 | } | |
80134cf5 | 3553 | |
21fe1c75 | 3554 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3555 | |
21fe1c75 SM |
3556 | void remove_thread (ptid_t ptid) |
3557 | { | |
3558 | auto match_ptid = [&] (const thread_item &item) | |
3559 | { | |
3560 | return item.ptid == ptid; | |
3561 | }; | |
cbb8991c | 3562 | |
21fe1c75 SM |
3563 | auto it = std::remove_if (this->items.begin (), |
3564 | this->items.end (), | |
3565 | match_ptid); | |
cbb8991c | 3566 | |
21fe1c75 SM |
3567 | if (it != this->items.end ()) |
3568 | this->items.erase (it); | |
3569 | } | |
3570 | ||
3571 | /* The threads found on the remote target. */ | |
3572 | std::vector<thread_item> items; | |
3573 | }; | |
cbb8991c | 3574 | |
c906108c | 3575 | static int |
6dc54d91 | 3576 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3577 | { |
19ba03f4 SM |
3578 | struct threads_listing_context *context |
3579 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3580 | int pid = inferior_ptid.pid (); |
3581 | int lwp = threadref_to_int (ref); | |
3582 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3583 | |
21fe1c75 | 3584 | context->items.emplace_back (ptid); |
6dc54d91 | 3585 | |
c906108c SS |
3586 | return 1; /* continue iterator */ |
3587 | } | |
3588 | ||
3589 | #define CRAZY_MAX_THREADS 1000 | |
3590 | ||
6b8edb51 PA |
3591 | ptid_t |
3592 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3593 | { |
d01949b6 | 3594 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3595 | |
3596 | putpkt ("qC"); | |
8d64371b | 3597 | getpkt (&rs->buf, 0); |
2e9f7625 | 3598 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3599 | { |
256642e8 | 3600 | const char *obuf; |
c9f35b34 KB |
3601 | ptid_t result; |
3602 | ||
3603 | result = read_ptid (&rs->buf[2], &obuf); | |
3604 | if (*obuf != '\0' && remote_debug) | |
3605 | fprintf_unfiltered (gdb_stdlog, | |
3606 | "warning: garbage in qC reply\n"); | |
3607 | ||
3608 | return result; | |
3609 | } | |
c906108c SS |
3610 | else |
3611 | return oldpid; | |
3612 | } | |
3613 | ||
6dc54d91 | 3614 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3615 | |
6b8edb51 PA |
3616 | int |
3617 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3618 | { |
6dc54d91 PA |
3619 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3620 | CRAZY_MAX_THREADS) >= 0) | |
3621 | return 1; | |
3622 | ||
3623 | return 0; | |
c906108c SS |
3624 | } |
3625 | ||
dc146f7c VP |
3626 | #if defined(HAVE_LIBEXPAT) |
3627 | ||
dc146f7c VP |
3628 | static void |
3629 | start_thread (struct gdb_xml_parser *parser, | |
3630 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3631 | void *user_data, |
3632 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3633 | { |
19ba03f4 SM |
3634 | struct threads_listing_context *data |
3635 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3636 | struct gdb_xml_value *attr; |
dc146f7c | 3637 | |
4d0fdd9b | 3638 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3639 | ptid_t ptid = read_ptid (id, NULL); |
3640 | ||
3641 | data->items.emplace_back (ptid); | |
3642 | thread_item &item = data->items.back (); | |
dc146f7c | 3643 | |
3d2c1d41 PA |
3644 | attr = xml_find_attribute (attributes, "core"); |
3645 | if (attr != NULL) | |
4d0fdd9b | 3646 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3647 | |
79efa585 | 3648 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3649 | if (attr != NULL) |
4d0fdd9b | 3650 | item.name = (const char *) attr->value.get (); |
79efa585 | 3651 | |
f6327dcb KB |
3652 | attr = xml_find_attribute (attributes, "handle"); |
3653 | if (attr != NULL) | |
4d0fdd9b | 3654 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3655 | } |
3656 | ||
3657 | static void | |
3658 | end_thread (struct gdb_xml_parser *parser, | |
3659 | const struct gdb_xml_element *element, | |
3660 | void *user_data, const char *body_text) | |
3661 | { | |
19ba03f4 SM |
3662 | struct threads_listing_context *data |
3663 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3664 | |
21fe1c75 SM |
3665 | if (body_text != NULL && *body_text != '\0') |
3666 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3667 | } |
3668 | ||
3669 | const struct gdb_xml_attribute thread_attributes[] = { | |
3670 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3671 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3672 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3673 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3674 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3675 | }; | |
3676 | ||
3677 | const struct gdb_xml_element thread_children[] = { | |
3678 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3679 | }; | |
3680 | ||
3681 | const struct gdb_xml_element threads_children[] = { | |
3682 | { "thread", thread_attributes, thread_children, | |
3683 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3684 | start_thread, end_thread }, | |
3685 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3686 | }; | |
3687 | ||
3688 | const struct gdb_xml_element threads_elements[] = { | |
3689 | { "threads", NULL, threads_children, | |
3690 | GDB_XML_EF_NONE, NULL, NULL }, | |
3691 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3692 | }; | |
3693 | ||
3694 | #endif | |
3695 | ||
6dc54d91 | 3696 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3697 | |
6b8edb51 PA |
3698 | int |
3699 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3700 | { |
dc146f7c | 3701 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3702 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3703 | { |
9018be22 | 3704 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3705 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3706 | |
9018be22 | 3707 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3708 | { |
6dc54d91 | 3709 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3710 | threads_elements, xml->data (), context); |
dc146f7c VP |
3711 | } |
3712 | ||
6dc54d91 | 3713 | return 1; |
dc146f7c VP |
3714 | } |
3715 | #endif | |
3716 | ||
6dc54d91 PA |
3717 | return 0; |
3718 | } | |
3719 | ||
3720 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3721 | ||
6b8edb51 PA |
3722 | int |
3723 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3724 | { |
3725 | struct remote_state *rs = get_remote_state (); | |
3726 | ||
b80fafe3 | 3727 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3728 | { |
256642e8 | 3729 | const char *bufp; |
6dc54d91 | 3730 | |
9d1f7ab2 | 3731 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3732 | getpkt (&rs->buf, 0); |
3733 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3734 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3735 | { |
9d1f7ab2 MS |
3736 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3737 | { | |
3738 | do | |
3739 | { | |
21fe1c75 SM |
3740 | ptid_t ptid = read_ptid (bufp, &bufp); |
3741 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3742 | } |
3743 | while (*bufp++ == ','); /* comma-separated list */ | |
3744 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3745 | getpkt (&rs->buf, 0); |
3746 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3747 | } |
6dc54d91 PA |
3748 | return 1; |
3749 | } | |
3750 | else | |
3751 | { | |
3752 | /* Packet not recognized. */ | |
3753 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3754 | } |
3755 | } | |
3756 | ||
6dc54d91 PA |
3757 | return 0; |
3758 | } | |
3759 | ||
e8032dde | 3760 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3761 | targets. */ |
3762 | ||
f6ac5f3d PA |
3763 | void |
3764 | remote_target::update_thread_list () | |
6dc54d91 | 3765 | { |
6dc54d91 | 3766 | struct threads_listing_context context; |
ab970af1 | 3767 | int got_list = 0; |
e8032dde | 3768 | |
6dc54d91 PA |
3769 | /* We have a few different mechanisms to fetch the thread list. Try |
3770 | them all, starting with the most preferred one first, falling | |
3771 | back to older methods. */ | |
6b8edb51 PA |
3772 | if (remote_get_threads_with_qxfer (&context) |
3773 | || remote_get_threads_with_qthreadinfo (&context) | |
3774 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3775 | { |
ab970af1 PA |
3776 | got_list = 1; |
3777 | ||
21fe1c75 | 3778 | if (context.items.empty () |
f6ac5f3d | 3779 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3780 | { |
3781 | /* Some targets don't really support threads, but still | |
3782 | reply an (empty) thread list in response to the thread | |
3783 | listing packets, instead of replying "packet not | |
3784 | supported". Exit early so we don't delete the main | |
3785 | thread. */ | |
7d1a114c PA |
3786 | return; |
3787 | } | |
3788 | ||
ab970af1 PA |
3789 | /* CONTEXT now holds the current thread list on the remote |
3790 | target end. Delete GDB-side threads no longer found on the | |
3791 | target. */ | |
08036331 | 3792 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3793 | { |
21fe1c75 | 3794 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3795 | { |
3796 | /* Not found. */ | |
00431a78 | 3797 | delete_thread (tp); |
ab970af1 | 3798 | } |
cbb8991c DB |
3799 | } |
3800 | ||
3801 | /* Remove any unreported fork child threads from CONTEXT so | |
3802 | that we don't interfere with follow fork, which is where | |
3803 | creation of such threads is handled. */ | |
3804 | remove_new_fork_children (&context); | |
74531fed | 3805 | |
ab970af1 | 3806 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3807 | for (thread_item &item : context.items) |
6dc54d91 | 3808 | { |
21fe1c75 | 3809 | if (item.ptid != null_ptid) |
6dc54d91 | 3810 | { |
6dc54d91 | 3811 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3812 | executing until proven otherwise with a stop reply. |
3813 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3814 | stopped. */ |
0d5b594f | 3815 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3816 | |
21fe1c75 | 3817 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3818 | |
08036331 | 3819 | thread_info *tp = find_thread_ptid (item.ptid); |
00431a78 | 3820 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3821 | info->core = item.core; |
7aabaf9d SM |
3822 | info->extra = std::move (item.extra); |
3823 | info->name = std::move (item.name); | |
3824 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3825 | } |
3826 | } | |
3827 | } | |
3828 | ||
ab970af1 PA |
3829 | if (!got_list) |
3830 | { | |
3831 | /* If no thread listing method is supported, then query whether | |
3832 | each known thread is alive, one by one, with the T packet. | |
3833 | If the target doesn't support threads at all, then this is a | |
3834 | no-op. See remote_thread_alive. */ | |
3835 | prune_threads (); | |
3836 | } | |
9d1f7ab2 MS |
3837 | } |
3838 | ||
802188a7 | 3839 | /* |
9d1f7ab2 MS |
3840 | * Collect a descriptive string about the given thread. |
3841 | * The target may say anything it wants to about the thread | |
3842 | * (typically info about its blocked / runnable state, name, etc.). | |
3843 | * This string will appear in the info threads display. | |
802188a7 | 3844 | * |
9d1f7ab2 MS |
3845 | * Optional: targets are not required to implement this function. |
3846 | */ | |
3847 | ||
f6ac5f3d PA |
3848 | const char * |
3849 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3850 | { |
d01949b6 | 3851 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3852 | int set; |
3853 | threadref id; | |
3854 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 3855 | |
5d93a237 | 3856 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3857 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3858 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3859 | |
d7e15655 | 3860 | if (tp->ptid == magic_null_ptid |
e38504b3 | 3861 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
3862 | /* This is the main thread which was added by GDB. The remote |
3863 | server doesn't know about it. */ | |
3864 | return NULL; | |
3865 | ||
c76a8ea3 PA |
3866 | std::string &extra = get_remote_thread_info (tp)->extra; |
3867 | ||
3868 | /* If already have cached info, use it. */ | |
3869 | if (!extra.empty ()) | |
3870 | return extra.c_str (); | |
3871 | ||
4082afcc | 3872 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3873 | { |
c76a8ea3 PA |
3874 | /* If we're using qXfer:threads:read, then the extra info is |
3875 | included in the XML. So if we didn't have anything cached, | |
3876 | it's because there's really no extra info. */ | |
3877 | return NULL; | |
dc146f7c VP |
3878 | } |
3879 | ||
b80fafe3 | 3880 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3881 | { |
8d64371b TT |
3882 | char *b = rs->buf.data (); |
3883 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
3884 | |
3885 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3886 | b += strlen (b); | |
3887 | write_ptid (b, endb, tp->ptid); | |
3888 | ||
2e9f7625 | 3889 | putpkt (rs->buf); |
8d64371b | 3890 | getpkt (&rs->buf, 0); |
2e9f7625 | 3891 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3892 | { |
8d64371b TT |
3893 | extra.resize (strlen (rs->buf.data ()) / 2); |
3894 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 3895 | return extra.c_str (); |
9d1f7ab2 | 3896 | } |
0f71a2f6 | 3897 | } |
9d1f7ab2 MS |
3898 | |
3899 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3900 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3901 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3902 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 3903 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
3904 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3905 | if (threadinfo.active) | |
0f71a2f6 | 3906 | { |
9d1f7ab2 | 3907 | if (*threadinfo.shortname) |
c76a8ea3 | 3908 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 3909 | if (*threadinfo.display) |
c76a8ea3 PA |
3910 | { |
3911 | if (!extra.empty ()) | |
3912 | extra += ','; | |
3913 | string_appendf (extra, " State: %s", threadinfo.display); | |
3914 | } | |
9d1f7ab2 | 3915 | if (*threadinfo.more_display) |
c5aa993b | 3916 | { |
c76a8ea3 PA |
3917 | if (!extra.empty ()) |
3918 | extra += ','; | |
3919 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 3920 | } |
c76a8ea3 | 3921 | return extra.c_str (); |
0f71a2f6 | 3922 | } |
9d1f7ab2 | 3923 | return NULL; |
0f71a2f6 | 3924 | } |
c906108c | 3925 | \f |
c5aa993b | 3926 | |
f6ac5f3d PA |
3927 | bool |
3928 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3929 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3930 | { |
3931 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 3932 | char *p = rs->buf.data (); |
0fb4aa4b | 3933 | |
bba74b36 | 3934 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3935 | p += strlen (p); |
3936 | p += hexnumstr (p, addr); | |
3937 | putpkt (rs->buf); | |
8d64371b TT |
3938 | getpkt (&rs->buf, 0); |
3939 | p = rs->buf.data (); | |
0fb4aa4b PA |
3940 | |
3941 | if (*p == 'E') | |
3942 | error (_("Remote failure reply: %s"), p); | |
3943 | ||
3944 | if (*p++ == 'm') | |
3945 | { | |
256642e8 | 3946 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3947 | return true; |
0fb4aa4b PA |
3948 | } |
3949 | ||
5d9310c4 | 3950 | return false; |
0fb4aa4b PA |
3951 | } |
3952 | ||
f6ac5f3d PA |
3953 | std::vector<static_tracepoint_marker> |
3954 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
3955 | { |
3956 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3957 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3958 | const char *p; |
5d9310c4 | 3959 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3960 | |
3961 | /* Ask for a first packet of static tracepoint marker | |
3962 | definition. */ | |
3963 | putpkt ("qTfSTM"); | |
8d64371b TT |
3964 | getpkt (&rs->buf, 0); |
3965 | p = rs->buf.data (); | |
0fb4aa4b PA |
3966 | if (*p == 'E') |
3967 | error (_("Remote failure reply: %s"), p); | |
3968 | ||
0fb4aa4b PA |
3969 | while (*p++ == 'm') |
3970 | { | |
0fb4aa4b PA |
3971 | do |
3972 | { | |
5d9310c4 | 3973 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 3974 | |
5d9310c4 SM |
3975 | if (strid == NULL || marker.str_id == strid) |
3976 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
3977 | } |
3978 | while (*p++ == ','); /* comma-separated list */ | |
3979 | /* Ask for another packet of static tracepoint definition. */ | |
3980 | putpkt ("qTsSTM"); | |
8d64371b TT |
3981 | getpkt (&rs->buf, 0); |
3982 | p = rs->buf.data (); | |
0fb4aa4b PA |
3983 | } |
3984 | ||
0fb4aa4b PA |
3985 | return markers; |
3986 | } | |
3987 | ||
3988 | \f | |
10760264 JB |
3989 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3990 | ||
f6ac5f3d PA |
3991 | ptid_t |
3992 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 3993 | { |
e99b03dc | 3994 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
3995 | } |
3996 | \f | |
3997 | ||
24b06219 | 3998 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 3999 | |
6b8edb51 PA |
4000 | void |
4001 | remote_target::extended_remote_restart () | |
c906108c | 4002 | { |
d01949b6 | 4003 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4004 | |
4005 | /* Send the restart command; for reasons I don't understand the | |
4006 | remote side really expects a number after the "R". */ | |
8d64371b | 4007 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4008 | putpkt (rs->buf); |
c906108c | 4009 | |
ad9a8f3f | 4010 | remote_fileio_reset (); |
c906108c SS |
4011 | } |
4012 | \f | |
4013 | /* Clean up connection to a remote debugger. */ | |
4014 | ||
f6ac5f3d PA |
4015 | void |
4016 | remote_target::close () | |
c906108c | 4017 | { |
048094ac | 4018 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4019 | terminal_ours (); |
ce5ce7ed | 4020 | |
ce5ce7ed | 4021 | /* We don't have a connection to the remote stub anymore. Get rid |
f67fd822 PM |
4022 | of all the inferiors and their threads we were controlling. |
4023 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
4024 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 4025 | inferior_ptid = null_ptid; |
f67fd822 | 4026 | discard_all_inferiors (); |
ce5ce7ed | 4027 | |
6b8edb51 PA |
4028 | trace_reset_local_state (); |
4029 | ||
4030 | delete this; | |
4031 | } | |
4032 | ||
4033 | remote_target::~remote_target () | |
4034 | { | |
4035 | struct remote_state *rs = get_remote_state (); | |
4036 | ||
4037 | /* Check for NULL because we may get here with a partially | |
4038 | constructed target/connection. */ | |
4039 | if (rs->remote_desc == nullptr) | |
4040 | return; | |
4041 | ||
4042 | serial_close (rs->remote_desc); | |
4043 | ||
4044 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4045 | everything of this target. */ |
6b8edb51 | 4046 | discard_pending_stop_replies_in_queue (); |
74531fed | 4047 | |
6b8edb51 PA |
4048 | if (rs->remote_async_inferior_event_token) |
4049 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4050 | |
5965e028 | 4051 | remote_notif_state_xfree (rs->notif_state); |
c906108c SS |
4052 | } |
4053 | ||
23860348 | 4054 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4055 | |
6b8edb51 PA |
4056 | void |
4057 | remote_target::get_offsets () | |
c906108c | 4058 | { |
d01949b6 | 4059 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4060 | char *buf; |
085dd6e6 | 4061 | char *ptr; |
31d99776 DJ |
4062 | int lose, num_segments = 0, do_sections, do_segments; |
4063 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 4064 | struct section_offsets *offs; |
31d99776 DJ |
4065 | struct symfile_segment_data *data; |
4066 | ||
4067 | if (symfile_objfile == NULL) | |
4068 | return; | |
c906108c SS |
4069 | |
4070 | putpkt ("qOffsets"); | |
8d64371b TT |
4071 | getpkt (&rs->buf, 0); |
4072 | buf = rs->buf.data (); | |
c906108c SS |
4073 | |
4074 | if (buf[0] == '\000') | |
4075 | return; /* Return silently. Stub doesn't support | |
23860348 | 4076 | this command. */ |
c906108c SS |
4077 | if (buf[0] == 'E') |
4078 | { | |
8a3fe4f8 | 4079 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4080 | return; |
4081 | } | |
4082 | ||
4083 | /* Pick up each field in turn. This used to be done with scanf, but | |
4084 | scanf will make trouble if CORE_ADDR size doesn't match | |
4085 | conversion directives correctly. The following code will work | |
4086 | with any size of CORE_ADDR. */ | |
4087 | text_addr = data_addr = bss_addr = 0; | |
4088 | ptr = buf; | |
4089 | lose = 0; | |
4090 | ||
61012eef | 4091 | if (startswith (ptr, "Text=")) |
c906108c SS |
4092 | { |
4093 | ptr += 5; | |
4094 | /* Don't use strtol, could lose on big values. */ | |
4095 | while (*ptr && *ptr != ';') | |
4096 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4097 | |
61012eef | 4098 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4099 | { |
4100 | ptr += 6; | |
4101 | while (*ptr && *ptr != ';') | |
4102 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4103 | } | |
4104 | else | |
4105 | lose = 1; | |
4106 | ||
61012eef | 4107 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4108 | { |
4109 | ptr += 5; | |
4110 | while (*ptr && *ptr != ';') | |
4111 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4112 | |
31d99776 DJ |
4113 | if (bss_addr != data_addr) |
4114 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4115 | } | |
4116 | else | |
4117 | lose = 1; | |
4118 | } | |
61012eef | 4119 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4120 | { |
31d99776 DJ |
4121 | ptr += 8; |
4122 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4123 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4124 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4125 | num_segments = 1; | |
4126 | ||
61012eef | 4127 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4128 | { |
4129 | ptr += 9; | |
4130 | while (*ptr && *ptr != ';') | |
4131 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4132 | num_segments++; | |
4133 | } | |
c906108c SS |
4134 | } |
4135 | else | |
4136 | lose = 1; | |
4137 | ||
4138 | if (lose) | |
8a3fe4f8 | 4139 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4140 | else if (*ptr != '\0') |
4141 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4142 | |
802188a7 | 4143 | offs = ((struct section_offsets *) |
a39a16c4 | 4144 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 4145 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 4146 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 4147 | |
31d99776 DJ |
4148 | data = get_symfile_segment_data (symfile_objfile->obfd); |
4149 | do_segments = (data != NULL); | |
4150 | do_sections = num_segments == 0; | |
c906108c | 4151 | |
28c32713 | 4152 | if (num_segments > 0) |
31d99776 | 4153 | { |
31d99776 DJ |
4154 | segments[0] = text_addr; |
4155 | segments[1] = data_addr; | |
4156 | } | |
28c32713 JB |
4157 | /* If we have two segments, we can still try to relocate everything |
4158 | by assuming that the .text and .data offsets apply to the whole | |
4159 | text and data segments. Convert the offsets given in the packet | |
4160 | to base addresses for symfile_map_offsets_to_segments. */ | |
4161 | else if (data && data->num_segments == 2) | |
4162 | { | |
4163 | segments[0] = data->segment_bases[0] + text_addr; | |
4164 | segments[1] = data->segment_bases[1] + data_addr; | |
4165 | num_segments = 2; | |
4166 | } | |
8d385431 DJ |
4167 | /* If the object file has only one segment, assume that it is text |
4168 | rather than data; main programs with no writable data are rare, | |
4169 | but programs with no code are useless. Of course the code might | |
4170 | have ended up in the data segment... to detect that we would need | |
4171 | the permissions here. */ | |
4172 | else if (data && data->num_segments == 1) | |
4173 | { | |
4174 | segments[0] = data->segment_bases[0] + text_addr; | |
4175 | num_segments = 1; | |
4176 | } | |
28c32713 JB |
4177 | /* There's no way to relocate by segment. */ |
4178 | else | |
4179 | do_segments = 0; | |
31d99776 DJ |
4180 | |
4181 | if (do_segments) | |
4182 | { | |
4183 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
4184 | offs, num_segments, segments); | |
4185 | ||
4186 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4187 | error (_("Can not handle qOffsets TextSeg " |
4188 | "response with this symbol file")); | |
31d99776 DJ |
4189 | |
4190 | if (ret > 0) | |
4191 | do_sections = 0; | |
4192 | } | |
c906108c | 4193 | |
9ef895d6 DJ |
4194 | if (data) |
4195 | free_symfile_segment_data (data); | |
31d99776 DJ |
4196 | |
4197 | if (do_sections) | |
4198 | { | |
4199 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
4200 | ||
3e43a32a MS |
4201 | /* This is a temporary kludge to force data and bss to use the |
4202 | same offsets because that's what nlmconv does now. The real | |
4203 | solution requires changes to the stub and remote.c that I | |
4204 | don't have time to do right now. */ | |
31d99776 DJ |
4205 | |
4206 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
4207 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
4208 | } | |
c906108c SS |
4209 | |
4210 | objfile_relocate (symfile_objfile, offs); | |
4211 | } | |
4212 | ||
9a7071a8 | 4213 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4214 | |
4215 | void | |
4216 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4217 | { |
5d93a237 TT |
4218 | struct remote_state *rs = get_remote_state (); |
4219 | ||
9a7071a8 | 4220 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4221 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4222 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4223 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4224 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4225 | { | |
5d93a237 | 4226 | serial_send_break (rs->remote_desc); |
c33e31fd | 4227 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4228 | } |
4229 | else | |
4230 | internal_error (__FILE__, __LINE__, | |
4231 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4232 | interrupt_sequence_mode); | |
4233 | } | |
4234 | ||
3405876a PA |
4235 | |
4236 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4237 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4238 | ||
4239 | static ptid_t | |
4240 | stop_reply_extract_thread (char *stop_reply) | |
4241 | { | |
4242 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4243 | { | |
256642e8 | 4244 | const char *p; |
3405876a PA |
4245 | |
4246 | /* Txx r:val ; r:val (...) */ | |
4247 | p = &stop_reply[3]; | |
4248 | ||
4249 | /* Look for "register" named "thread". */ | |
4250 | while (*p != '\0') | |
4251 | { | |
256642e8 | 4252 | const char *p1; |
3405876a PA |
4253 | |
4254 | p1 = strchr (p, ':'); | |
4255 | if (p1 == NULL) | |
4256 | return null_ptid; | |
4257 | ||
4258 | if (strncmp (p, "thread", p1 - p) == 0) | |
4259 | return read_ptid (++p1, &p); | |
4260 | ||
4261 | p1 = strchr (p, ';'); | |
4262 | if (p1 == NULL) | |
4263 | return null_ptid; | |
4264 | p1++; | |
4265 | ||
4266 | p = p1; | |
4267 | } | |
4268 | } | |
4269 | ||
4270 | return null_ptid; | |
4271 | } | |
4272 | ||
b7ea362b PA |
4273 | /* Determine the remote side's current thread. If we have a stop |
4274 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4275 | "thread" register we can extract the current thread from. If not, | |
4276 | ask the remote which is the current thread with qC. The former | |
4277 | method avoids a roundtrip. */ | |
4278 | ||
6b8edb51 PA |
4279 | ptid_t |
4280 | remote_target::get_current_thread (char *wait_status) | |
b7ea362b | 4281 | { |
6a49a997 | 4282 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4283 | |
4284 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4285 | the target architecture, which we haven't yet fully determined at | |
4286 | this point. */ | |
4287 | if (wait_status != NULL) | |
4288 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4289 | if (ptid == null_ptid) |
b7ea362b PA |
4290 | ptid = remote_current_thread (inferior_ptid); |
4291 | ||
4292 | return ptid; | |
4293 | } | |
4294 | ||
49c62f2e PA |
4295 | /* Query the remote target for which is the current thread/process, |
4296 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4297 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4298 | to return the current thread. |
4299 | ||
4300 | This function is called after handling the '?' or 'vRun' packets, | |
4301 | whose response is a stop reply from which we can also try | |
4302 | extracting the thread. If the target doesn't support the explicit | |
4303 | qC query, we infer the current thread from that stop reply, passed | |
4304 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e | 4305 | |
6b8edb51 PA |
4306 | void |
4307 | remote_target::add_current_inferior_and_thread (char *wait_status) | |
49c62f2e PA |
4308 | { |
4309 | struct remote_state *rs = get_remote_state (); | |
4310 | int fake_pid_p = 0; | |
49c62f2e PA |
4311 | |
4312 | inferior_ptid = null_ptid; | |
4313 | ||
b7ea362b | 4314 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 4315 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4316 | |
87215ad1 | 4317 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4318 | { |
4319 | if (!remote_multi_process_p (rs)) | |
4320 | fake_pid_p = 1; | |
49c62f2e PA |
4321 | } |
4322 | else | |
4323 | { | |
4324 | /* Without this, some commands which require an active target | |
4325 | (such as kill) won't work. This variable serves (at least) | |
4326 | double duty as both the pid of the target process (if it has | |
4327 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4328 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
4329 | fake_pid_p = 1; |
4330 | } | |
4331 | ||
e99b03dc | 4332 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4333 | |
87215ad1 SDJ |
4334 | /* Add the main thread and switch to it. Don't try reading |
4335 | registers yet, since we haven't fetched the target description | |
4336 | yet. */ | |
4337 | thread_info *tp = add_thread_silent (curr_ptid); | |
4338 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
4339 | } |
4340 | ||
6efcd9a8 PA |
4341 | /* Print info about a thread that was found already stopped on |
4342 | connection. */ | |
4343 | ||
4344 | static void | |
4345 | print_one_stopped_thread (struct thread_info *thread) | |
4346 | { | |
4347 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4348 | ||
00431a78 | 4349 | switch_to_thread (thread); |
f2ffa92b | 4350 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4351 | set_current_sal_from_frame (get_current_frame ()); |
4352 | ||
4353 | thread->suspend.waitstatus_pending_p = 0; | |
4354 | ||
4355 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4356 | { | |
4357 | enum gdb_signal sig = ws->value.sig; | |
4358 | ||
4359 | if (signal_print_state (sig)) | |
76727919 | 4360 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4361 | } |
76727919 | 4362 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4363 | } |
4364 | ||
221e1a37 PA |
4365 | /* Process all initial stop replies the remote side sent in response |
4366 | to the ? packet. These indicate threads that were already stopped | |
4367 | on initial connection. We mark these threads as stopped and print | |
4368 | their current frame before giving the user the prompt. */ | |
4369 | ||
6b8edb51 PA |
4370 | void |
4371 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4372 | { |
4373 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4374 | struct thread_info *selected = NULL; |
4375 | struct thread_info *lowest_stopped = NULL; | |
4376 | struct thread_info *first = NULL; | |
221e1a37 PA |
4377 | |
4378 | /* Consume the initial pending events. */ | |
4379 | while (pending_stop_replies-- > 0) | |
4380 | { | |
4381 | ptid_t waiton_ptid = minus_one_ptid; | |
4382 | ptid_t event_ptid; | |
4383 | struct target_waitstatus ws; | |
4384 | int ignore_event = 0; | |
4385 | ||
4386 | memset (&ws, 0, sizeof (ws)); | |
4387 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4388 | if (remote_debug) | |
4389 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4390 | ||
4391 | switch (ws.kind) | |
4392 | { | |
4393 | case TARGET_WAITKIND_IGNORE: | |
4394 | case TARGET_WAITKIND_NO_RESUMED: | |
4395 | case TARGET_WAITKIND_SIGNALLED: | |
4396 | case TARGET_WAITKIND_EXITED: | |
4397 | /* We shouldn't see these, but if we do, just ignore. */ | |
4398 | if (remote_debug) | |
4399 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4400 | ignore_event = 1; | |
4401 | break; | |
4402 | ||
4403 | case TARGET_WAITKIND_EXECD: | |
4404 | xfree (ws.value.execd_pathname); | |
4405 | break; | |
4406 | default: | |
4407 | break; | |
4408 | } | |
4409 | ||
4410 | if (ignore_event) | |
4411 | continue; | |
4412 | ||
b926417a | 4413 | struct thread_info *evthread = find_thread_ptid (event_ptid); |
221e1a37 PA |
4414 | |
4415 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4416 | { | |
4417 | enum gdb_signal sig = ws.value.sig; | |
4418 | ||
4419 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4420 | instead of signal 0. Suppress it. */ | |
4421 | if (sig == GDB_SIGNAL_TRAP) | |
4422 | sig = GDB_SIGNAL_0; | |
b926417a | 4423 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4424 | ws.value.sig = sig; |
4425 | } | |
221e1a37 | 4426 | |
b926417a | 4427 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4428 | |
4429 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4430 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4431 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 PA |
4432 | |
4433 | set_executing (event_ptid, 0); | |
4434 | set_running (event_ptid, 0); | |
b926417a | 4435 | get_remote_thread_info (evthread)->vcont_resumed = 0; |
6efcd9a8 PA |
4436 | } |
4437 | ||
4438 | /* "Notice" the new inferiors before anything related to | |
4439 | registers/memory. */ | |
08036331 | 4440 | for (inferior *inf : all_non_exited_inferiors ()) |
6efcd9a8 | 4441 | { |
6efcd9a8 PA |
4442 | inf->needs_setup = 1; |
4443 | ||
4444 | if (non_stop) | |
4445 | { | |
08036331 | 4446 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4447 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4448 | from_tty); |
4449 | } | |
4450 | } | |
4451 | ||
4452 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4453 | records the threads' stop pc, so must be done after "noticing" | |
4454 | the inferiors. */ | |
4455 | if (!non_stop) | |
4456 | { | |
4457 | stop_all_threads (); | |
4458 | ||
4459 | /* If all threads of an inferior were already stopped, we | |
4460 | haven't setup the inferior yet. */ | |
08036331 | 4461 | for (inferior *inf : all_non_exited_inferiors ()) |
6efcd9a8 | 4462 | { |
6efcd9a8 PA |
4463 | if (inf->needs_setup) |
4464 | { | |
08036331 | 4465 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4466 | switch_to_thread_no_regs (thread); |
4467 | setup_inferior (0); | |
4468 | } | |
4469 | } | |
221e1a37 | 4470 | } |
6efcd9a8 PA |
4471 | |
4472 | /* Now go over all threads that are stopped, and print their current | |
4473 | frame. If all-stop, then if there's a signalled thread, pick | |
4474 | that as current. */ | |
08036331 | 4475 | for (thread_info *thread : all_non_exited_threads ()) |
6efcd9a8 | 4476 | { |
6efcd9a8 PA |
4477 | if (first == NULL) |
4478 | first = thread; | |
4479 | ||
4480 | if (!non_stop) | |
00431a78 | 4481 | thread->set_running (false); |
6efcd9a8 PA |
4482 | else if (thread->state != THREAD_STOPPED) |
4483 | continue; | |
4484 | ||
6efcd9a8 PA |
4485 | if (selected == NULL |
4486 | && thread->suspend.waitstatus_pending_p) | |
4487 | selected = thread; | |
4488 | ||
5d5658a1 PA |
4489 | if (lowest_stopped == NULL |
4490 | || thread->inf->num < lowest_stopped->inf->num | |
4491 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4492 | lowest_stopped = thread; |
4493 | ||
4494 | if (non_stop) | |
4495 | print_one_stopped_thread (thread); | |
4496 | } | |
4497 | ||
4498 | /* In all-stop, we only print the status of one thread, and leave | |
4499 | others with their status pending. */ | |
4500 | if (!non_stop) | |
4501 | { | |
08036331 | 4502 | thread_info *thread = selected; |
6efcd9a8 PA |
4503 | if (thread == NULL) |
4504 | thread = lowest_stopped; | |
4505 | if (thread == NULL) | |
4506 | thread = first; | |
4507 | ||
4508 | print_one_stopped_thread (thread); | |
4509 | } | |
4510 | ||
4511 | /* For "info program". */ | |
08036331 | 4512 | thread_info *thread = inferior_thread (); |
6efcd9a8 PA |
4513 | if (thread->state == THREAD_STOPPED) |
4514 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4515 | } |
4516 | ||
048094ac PA |
4517 | /* Start the remote connection and sync state. */ |
4518 | ||
f6ac5f3d PA |
4519 | void |
4520 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4521 | { |
c8d104ad PA |
4522 | struct remote_state *rs = get_remote_state (); |
4523 | struct packet_config *noack_config; | |
2d717e4f | 4524 | char *wait_status = NULL; |
8621d6a9 | 4525 | |
048094ac PA |
4526 | /* Signal other parts that we're going through the initial setup, |
4527 | and so things may not be stable yet. E.g., we don't try to | |
4528 | install tracepoints until we've relocated symbols. Also, a | |
4529 | Ctrl-C before we're connected and synced up can't interrupt the | |
4530 | target. Instead, it offers to drop the (potentially wedged) | |
4531 | connection. */ | |
4532 | rs->starting_up = 1; | |
4533 | ||
522002f9 | 4534 | QUIT; |
c906108c | 4535 | |
9a7071a8 JB |
4536 | if (interrupt_on_connect) |
4537 | send_interrupt_sequence (); | |
4538 | ||
57e12211 | 4539 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4540 | remote_serial_write ("+", 1); |
1e51243a | 4541 | |
c8d104ad PA |
4542 | /* The first packet we send to the target is the optional "supported |
4543 | packets" request. If the target can answer this, it will tell us | |
4544 | which later probes to skip. */ | |
4545 | remote_query_supported (); | |
4546 | ||
d914c394 | 4547 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4548 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4549 | set_permissions (); |
d914c394 | 4550 | |
57809e5e JK |
4551 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4552 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4553 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4554 | invalid reply and GDB would return error in | |
4555 | remote_hostio_set_filesystem, making remote files access impossible. | |
4556 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4557 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4558 | { | |
4559 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4560 | ||
4561 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4562 | getpkt (&rs->buf, 0); |
4563 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4564 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4565 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4566 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4567 | rs->buf.data ()); |
57809e5e JK |
4568 | } |
4569 | ||
c8d104ad PA |
4570 | /* Next, we possibly activate noack mode. |
4571 | ||
4572 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4573 | enable noack mode if the stub reported a wish for it with | |
4574 | qSupported. | |
4575 | ||
4576 | If set to TRUE, then enable noack mode even if the stub didn't | |
4577 | report it in qSupported. If the stub doesn't reply OK, the | |
4578 | session ends with an error. | |
4579 | ||
4580 | If FALSE, then don't activate noack mode, regardless of what the | |
4581 | stub claimed should be the default with qSupported. */ | |
4582 | ||
4583 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4584 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4585 | { |
4586 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4587 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4588 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4589 | rs->noack_mode = 1; | |
4590 | } | |
4591 | ||
04bd08de | 4592 | if (extended_p) |
5fe04517 PA |
4593 | { |
4594 | /* Tell the remote that we are using the extended protocol. */ | |
4595 | putpkt ("!"); | |
8d64371b | 4596 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4597 | } |
4598 | ||
9b224c5e PA |
4599 | /* Let the target know which signals it is allowed to pass down to |
4600 | the program. */ | |
4601 | update_signals_program_target (); | |
4602 | ||
d962ef82 DJ |
4603 | /* Next, if the target can specify a description, read it. We do |
4604 | this before anything involving memory or registers. */ | |
4605 | target_find_description (); | |
4606 | ||
6c95b8df PA |
4607 | /* Next, now that we know something about the target, update the |
4608 | address spaces in the program spaces. */ | |
4609 | update_address_spaces (); | |
4610 | ||
50c71eaf PA |
4611 | /* On OSs where the list of libraries is global to all |
4612 | processes, we fetch them early. */ | |
f5656ead | 4613 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4614 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4615 | |
6efcd9a8 | 4616 | if (target_is_non_stop_p ()) |
74531fed | 4617 | { |
4082afcc | 4618 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4619 | error (_("Non-stop mode requested, but remote " |
4620 | "does not support non-stop")); | |
74531fed PA |
4621 | |
4622 | putpkt ("QNonStop:1"); | |
8d64371b | 4623 | getpkt (&rs->buf, 0); |
74531fed | 4624 | |
8d64371b TT |
4625 | if (strcmp (rs->buf.data (), "OK") != 0) |
4626 | error (_("Remote refused setting non-stop mode with: %s"), | |
4627 | rs->buf.data ()); | |
74531fed PA |
4628 | |
4629 | /* Find about threads and processes the stub is already | |
4630 | controlling. We default to adding them in the running state. | |
4631 | The '?' query below will then tell us about which threads are | |
4632 | stopped. */ | |
f6ac5f3d | 4633 | this->update_thread_list (); |
74531fed | 4634 | } |
4082afcc | 4635 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4636 | { |
4637 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4638 | Request it explicitly. */ |
74531fed | 4639 | putpkt ("QNonStop:0"); |
8d64371b | 4640 | getpkt (&rs->buf, 0); |
74531fed | 4641 | |
8d64371b TT |
4642 | if (strcmp (rs->buf.data (), "OK") != 0) |
4643 | error (_("Remote refused setting all-stop mode with: %s"), | |
4644 | rs->buf.data ()); | |
74531fed PA |
4645 | } |
4646 | ||
a0743c90 YQ |
4647 | /* Upload TSVs regardless of whether the target is running or not. The |
4648 | remote stub, such as GDBserver, may have some predefined or builtin | |
4649 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4650 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4651 | { |
4652 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4653 | ||
f6ac5f3d | 4654 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4655 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4656 | } | |
4657 | ||
2d717e4f DJ |
4658 | /* Check whether the target is running now. */ |
4659 | putpkt ("?"); | |
8d64371b | 4660 | getpkt (&rs->buf, 0); |
2d717e4f | 4661 | |
6efcd9a8 | 4662 | if (!target_is_non_stop_p ()) |
2d717e4f | 4663 | { |
74531fed | 4664 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4665 | { |
04bd08de | 4666 | if (!extended_p) |
74531fed | 4667 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4668 | |
4669 | /* We're connected, but not running. Drop out before we | |
4670 | call start_remote. */ | |
e278ad5b | 4671 | rs->starting_up = 0; |
c35b1492 | 4672 | return; |
2d717e4f DJ |
4673 | } |
4674 | else | |
74531fed | 4675 | { |
74531fed | 4676 | /* Save the reply for later. */ |
8d64371b TT |
4677 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4678 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4679 | } |
4680 | ||
b7ea362b | 4681 | /* Fetch thread list. */ |
e8032dde | 4682 | target_update_thread_list (); |
b7ea362b | 4683 | |
74531fed PA |
4684 | /* Let the stub know that we want it to return the thread. */ |
4685 | set_continue_thread (minus_one_ptid); | |
4686 | ||
b7ea362b PA |
4687 | if (thread_count () == 0) |
4688 | { | |
4689 | /* Target has no concept of threads at all. GDB treats | |
4690 | non-threaded target as single-threaded; add a main | |
4691 | thread. */ | |
4692 | add_current_inferior_and_thread (wait_status); | |
4693 | } | |
4694 | else | |
4695 | { | |
4696 | /* We have thread information; select the thread the target | |
4697 | says should be current. If we're reconnecting to a | |
4698 | multi-threaded program, this will ideally be the thread | |
4699 | that last reported an event before GDB disconnected. */ | |
4700 | inferior_ptid = get_current_thread (wait_status); | |
d7e15655 | 4701 | if (inferior_ptid == null_ptid) |
b7ea362b PA |
4702 | { |
4703 | /* Odd... The target was able to list threads, but not | |
4704 | tell us which thread was current (no "thread" | |
4705 | register in T stop reply?). Just pick the first | |
4706 | thread in the thread list then. */ | |
c9f35b34 KB |
4707 | |
4708 | if (remote_debug) | |
4709 | fprintf_unfiltered (gdb_stdlog, | |
4710 | "warning: couldn't determine remote " | |
4711 | "current thread; picking first in list.\n"); | |
4712 | ||
08036331 | 4713 | inferior_ptid = inferior_list->thread_list->ptid; |
b7ea362b PA |
4714 | } |
4715 | } | |
74531fed | 4716 | |
6e586cc5 YQ |
4717 | /* init_wait_for_inferior should be called before get_offsets in order |
4718 | to manage `inserted' flag in bp loc in a correct state. | |
4719 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4720 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4721 | start_remote, set `inserted' flag to 1. In the initialization of | |
4722 | inferior, breakpoint_init_inferior should be called first, and then | |
4723 | breakpoint_re_set can be called. If this order is broken, state of | |
4724 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4725 | manipulation. */ | |
4726 | init_wait_for_inferior (); | |
4727 | ||
74531fed PA |
4728 | get_offsets (); /* Get text, data & bss offsets. */ |
4729 | ||
d962ef82 DJ |
4730 | /* If we could not find a description using qXfer, and we know |
4731 | how to do it some other way, try again. This is not | |
4732 | supported for non-stop; it could be, but it is tricky if | |
4733 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4734 | if (remote_read_description_p (this) |
f5656ead | 4735 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4736 | { |
4737 | target_clear_description (); | |
4738 | target_find_description (); | |
4739 | } | |
4740 | ||
74531fed PA |
4741 | /* Use the previously fetched status. */ |
4742 | gdb_assert (wait_status != NULL); | |
8d64371b | 4743 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4744 | rs->cached_wait_status = 1; |
4745 | ||
f6ac5f3d | 4746 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4747 | } |
4748 | else | |
4749 | { | |
68c97600 PA |
4750 | /* Clear WFI global state. Do this before finding about new |
4751 | threads and inferiors, and setting the current inferior. | |
4752 | Otherwise we would clear the proceed status of the current | |
4753 | inferior when we want its stop_soon state to be preserved | |
4754 | (see notice_new_inferior). */ | |
4755 | init_wait_for_inferior (); | |
4756 | ||
74531fed PA |
4757 | /* In non-stop, we will either get an "OK", meaning that there |
4758 | are no stopped threads at this time; or, a regular stop | |
4759 | reply. In the latter case, there may be more than one thread | |
4760 | stopped --- we pull them all out using the vStopped | |
4761 | mechanism. */ | |
8d64371b | 4762 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4763 | { |
722247f1 | 4764 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4765 | |
722247f1 YQ |
4766 | /* remote_notif_get_pending_replies acks this one, and gets |
4767 | the rest out. */ | |
f48ff2a7 | 4768 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4769 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4770 | remote_notif_get_pending_events (notif); |
74531fed | 4771 | } |
2d717e4f | 4772 | |
74531fed PA |
4773 | if (thread_count () == 0) |
4774 | { | |
04bd08de | 4775 | if (!extended_p) |
74531fed | 4776 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4777 | |
c35b1492 PA |
4778 | /* We're connected, but not running. Drop out before we |
4779 | call start_remote. */ | |
e278ad5b | 4780 | rs->starting_up = 0; |
c35b1492 PA |
4781 | return; |
4782 | } | |
74531fed | 4783 | |
74531fed PA |
4784 | /* In non-stop mode, any cached wait status will be stored in |
4785 | the stop reply queue. */ | |
4786 | gdb_assert (wait_status == NULL); | |
f0223081 | 4787 | |
2455069d | 4788 | /* Report all signals during attach/startup. */ |
adc6a863 | 4789 | pass_signals ({}); |
221e1a37 PA |
4790 | |
4791 | /* If there are already stopped threads, mark them stopped and | |
4792 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4793 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4794 | |
4795 | if (target_can_async_p ()) | |
4796 | target_async (1); | |
74531fed | 4797 | } |
c8d104ad | 4798 | |
c8d104ad PA |
4799 | /* If we connected to a live target, do some additional setup. */ |
4800 | if (target_has_execution) | |
4801 | { | |
f4ccffad | 4802 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4803 | remote_check_symbols (); |
c8d104ad | 4804 | } |
50c71eaf | 4805 | |
d5551862 SS |
4806 | /* Possibly the target has been engaged in a trace run started |
4807 | previously; find out where things are at. */ | |
f6ac5f3d | 4808 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4809 | { |
00bf0b85 | 4810 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4811 | |
00bf0b85 SS |
4812 | if (current_trace_status ()->running) |
4813 | printf_filtered (_("Trace is already running on the target.\n")); | |
4814 | ||
f6ac5f3d | 4815 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4816 | |
4817 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4818 | } |
4819 | ||
c0272db5 TW |
4820 | /* Possibly the target has been engaged in a btrace record started |
4821 | previously; find out where things are at. */ | |
4822 | remote_btrace_maybe_reopen (); | |
4823 | ||
1e51243a PA |
4824 | /* The thread and inferior lists are now synchronized with the |
4825 | target, our symbols have been relocated, and we're merged the | |
4826 | target's tracepoints with ours. We're done with basic start | |
4827 | up. */ | |
4828 | rs->starting_up = 0; | |
4829 | ||
a25a5a45 PA |
4830 | /* Maybe breakpoints are global and need to be inserted now. */ |
4831 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4832 | insert_breakpoints (); |
c906108c SS |
4833 | } |
4834 | ||
4835 | /* Open a connection to a remote debugger. | |
4836 | NAME is the filename used for communication. */ | |
4837 | ||
f6ac5f3d PA |
4838 | void |
4839 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4840 | { |
f6ac5f3d | 4841 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4842 | } |
4843 | ||
c906108c SS |
4844 | /* Open a connection to a remote debugger using the extended |
4845 | remote gdb protocol. NAME is the filename used for communication. */ | |
4846 | ||
f6ac5f3d PA |
4847 | void |
4848 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4849 | { |
f6ac5f3d | 4850 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4851 | } |
4852 | ||
ca4f7f8b PA |
4853 | /* Reset all packets back to "unknown support". Called when opening a |
4854 | new connection to a remote target. */ | |
c906108c | 4855 | |
d471ea57 | 4856 | static void |
ca4f7f8b | 4857 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4858 | { |
4859 | int i; | |
a744cf53 | 4860 | |
444abaca | 4861 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4862 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4863 | } |
4864 | ||
ca4f7f8b PA |
4865 | /* Initialize all packet configs. */ |
4866 | ||
4867 | static void | |
4868 | init_all_packet_configs (void) | |
4869 | { | |
4870 | int i; | |
4871 | ||
4872 | for (i = 0; i < PACKET_MAX; i++) | |
4873 | { | |
4874 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4875 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4876 | } | |
4877 | } | |
4878 | ||
23860348 | 4879 | /* Symbol look-up. */ |
dc8acb97 | 4880 | |
6b8edb51 PA |
4881 | void |
4882 | remote_target::remote_check_symbols () | |
dc8acb97 | 4883 | { |
8d64371b | 4884 | char *tmp; |
dc8acb97 MS |
4885 | int end; |
4886 | ||
63154eca PA |
4887 | /* The remote side has no concept of inferiors that aren't running |
4888 | yet, it only knows about running processes. If we're connected | |
4889 | but our current inferior is not running, we should not invite the | |
4890 | remote target to request symbol lookups related to its | |
4891 | (unrelated) current process. */ | |
4892 | if (!target_has_execution) | |
4893 | return; | |
4894 | ||
4082afcc | 4895 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4896 | return; |
4897 | ||
63154eca PA |
4898 | /* Make sure the remote is pointing at the right process. Note |
4899 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4900 | set_general_process (); |
4901 | ||
6d820c5c DJ |
4902 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4903 | because we need both at the same time. */ | |
66644cd3 | 4904 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 4905 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 4906 | |
23860348 | 4907 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4908 | |
4909 | putpkt ("qSymbol::"); | |
8d64371b | 4910 | getpkt (&reply, 0); |
28170b88 | 4911 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 4912 | |
8d64371b | 4913 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 4914 | { |
77e371c0 TT |
4915 | struct bound_minimal_symbol sym; |
4916 | ||
dc8acb97 | 4917 | tmp = &reply[8]; |
66644cd3 AB |
4918 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
4919 | strlen (tmp) / 2); | |
dc8acb97 | 4920 | msg[end] = '\0'; |
66644cd3 | 4921 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 4922 | if (sym.minsym == NULL) |
66644cd3 AB |
4923 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
4924 | &reply[8]); | |
dc8acb97 | 4925 | else |
2bbe3cc1 | 4926 | { |
f5656ead | 4927 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4928 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4929 | |
4930 | /* If this is a function address, return the start of code | |
4931 | instead of any data function descriptor. */ | |
f5656ead | 4932 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4933 | sym_addr, |
8b88a78e | 4934 | current_top_target ()); |
2bbe3cc1 | 4935 | |
66644cd3 | 4936 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 4937 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 4938 | } |
66644cd3 AB |
4939 | |
4940 | putpkt (msg.data ()); | |
8d64371b | 4941 | getpkt (&reply, 0); |
dc8acb97 MS |
4942 | } |
4943 | } | |
4944 | ||
9db8d71f | 4945 | static struct serial * |
baa336ce | 4946 | remote_serial_open (const char *name) |
9db8d71f DJ |
4947 | { |
4948 | static int udp_warning = 0; | |
4949 | ||
4950 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4951 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4952 | serial connection is reliable and not the serial connection promising | |
4953 | to be. */ | |
61012eef | 4954 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4955 | { |
3e43a32a MS |
4956 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4957 | "Some events may be lost, rendering further debugging " | |
4958 | "impossible.")); | |
9db8d71f DJ |
4959 | udp_warning = 1; |
4960 | } | |
4961 | ||
4962 | return serial_open (name); | |
4963 | } | |
4964 | ||
d914c394 SS |
4965 | /* Inform the target of our permission settings. The permission flags |
4966 | work without this, but if the target knows the settings, it can do | |
4967 | a couple things. First, it can add its own check, to catch cases | |
4968 | that somehow manage to get by the permissions checks in target | |
4969 | methods. Second, if the target is wired to disallow particular | |
4970 | settings (for instance, a system in the field that is not set up to | |
4971 | be able to stop at a breakpoint), it can object to any unavailable | |
4972 | permissions. */ | |
4973 | ||
4974 | void | |
f6ac5f3d | 4975 | remote_target::set_permissions () |
d914c394 SS |
4976 | { |
4977 | struct remote_state *rs = get_remote_state (); | |
4978 | ||
8d64371b | 4979 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
4980 | "WriteReg:%x;WriteMem:%x;" |
4981 | "InsertBreak:%x;InsertTrace:%x;" | |
4982 | "InsertFastTrace:%x;Stop:%x", | |
4983 | may_write_registers, may_write_memory, | |
4984 | may_insert_breakpoints, may_insert_tracepoints, | |
4985 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 4986 | putpkt (rs->buf); |
8d64371b | 4987 | getpkt (&rs->buf, 0); |
d914c394 SS |
4988 | |
4989 | /* If the target didn't like the packet, warn the user. Do not try | |
4990 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
4991 | if (strcmp (rs->buf.data (), "OK") != 0) |
4992 | warning (_("Remote refused setting permissions with: %s"), | |
4993 | rs->buf.data ()); | |
d914c394 SS |
4994 | } |
4995 | ||
be2a5f71 DJ |
4996 | /* This type describes each known response to the qSupported |
4997 | packet. */ | |
4998 | struct protocol_feature | |
4999 | { | |
5000 | /* The name of this protocol feature. */ | |
5001 | const char *name; | |
5002 | ||
5003 | /* The default for this protocol feature. */ | |
5004 | enum packet_support default_support; | |
5005 | ||
5006 | /* The function to call when this feature is reported, or after | |
5007 | qSupported processing if the feature is not supported. | |
5008 | The first argument points to this structure. The second | |
5009 | argument indicates whether the packet requested support be | |
5010 | enabled, disabled, or probed (or the default, if this function | |
5011 | is being called at the end of processing and this feature was | |
5012 | not reported). The third argument may be NULL; if not NULL, it | |
5013 | is a NUL-terminated string taken from the packet following | |
5014 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5015 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5016 | enum packet_support, const char *); | |
be2a5f71 DJ |
5017 | |
5018 | /* The corresponding packet for this feature. Only used if | |
5019 | FUNC is remote_supported_packet. */ | |
5020 | int packet; | |
5021 | }; | |
5022 | ||
be2a5f71 | 5023 | static void |
6b8edb51 PA |
5024 | remote_supported_packet (remote_target *remote, |
5025 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5026 | enum packet_support support, |
5027 | const char *argument) | |
5028 | { | |
5029 | if (argument) | |
5030 | { | |
5031 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5032 | " \"%s\"."), feature->name); | |
5033 | return; | |
5034 | } | |
5035 | ||
4082afcc | 5036 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5037 | } |
be2a5f71 | 5038 | |
6b8edb51 PA |
5039 | void |
5040 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5041 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5042 | { |
5043 | struct remote_state *rs = get_remote_state (); | |
5044 | ||
5045 | int packet_size; | |
5046 | char *value_end; | |
5047 | ||
5048 | if (support != PACKET_ENABLE) | |
5049 | return; | |
5050 | ||
5051 | if (value == NULL || *value == '\0') | |
5052 | { | |
5053 | warning (_("Remote target reported \"%s\" without a size."), | |
5054 | feature->name); | |
5055 | return; | |
5056 | } | |
5057 | ||
5058 | errno = 0; | |
5059 | packet_size = strtol (value, &value_end, 16); | |
5060 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5061 | { | |
5062 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5063 | feature->name, value); | |
5064 | return; | |
5065 | } | |
5066 | ||
be2a5f71 DJ |
5067 | /* Record the new maximum packet size. */ |
5068 | rs->explicit_packet_size = packet_size; | |
5069 | } | |
5070 | ||
6b8edb51 PA |
5071 | void |
5072 | remote_packet_size (remote_target *remote, const protocol_feature *feature, | |
5073 | enum packet_support support, const char *value) | |
5074 | { | |
5075 | remote->remote_packet_size (feature, support, value); | |
5076 | } | |
5077 | ||
dc473cfb | 5078 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5079 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5080 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5081 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5082 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5083 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5084 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5085 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5086 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5087 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5088 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5089 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5090 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5091 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5092 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5093 | PACKET_qXfer_memory_map }, |
4de6483e UW |
5094 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
5095 | PACKET_qXfer_spu_read }, | |
5096 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
5097 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
5098 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5099 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5100 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5101 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5102 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5103 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5104 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5105 | PACKET_QPassSignals }, | |
82075af2 JS |
5106 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5107 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5108 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5109 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5110 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5111 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5112 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5113 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5114 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5115 | PACKET_QEnvironmentHexEncoded }, | |
5116 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5117 | PACKET_QEnvironmentReset }, | |
5118 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5119 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5120 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5121 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5122 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5123 | PACKET_multiprocess_feature }, | |
5124 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5125 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5126 | PACKET_qXfer_siginfo_read }, | |
5127 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5128 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5129 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5130 | PACKET_ConditionalTracepoints }, |
4082afcc | 5131 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5132 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5133 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5134 | PACKET_BreakpointCommands }, |
4082afcc | 5135 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5136 | PACKET_FastTracepoints }, |
4082afcc | 5137 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5138 | PACKET_StaticTracepoints }, |
4082afcc | 5139 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5140 | PACKET_InstallInTrace}, |
4082afcc PA |
5141 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5142 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5143 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5144 | PACKET_bc }, | |
5145 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5146 | PACKET_bs }, | |
409873ef SS |
5147 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5148 | PACKET_TracepointSource }, | |
d914c394 SS |
5149 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5150 | PACKET_QAllow }, | |
4082afcc PA |
5151 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5152 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5153 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5154 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5155 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5156 | PACKET_qXfer_uib }, | |
03583c20 UW |
5157 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5158 | PACKET_QDisableRandomization }, | |
d1feda86 | 5159 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5160 | { "QTBuffer:size", PACKET_DISABLE, |
5161 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5162 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5163 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5164 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5165 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5166 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5167 | PACKET_qXfer_btrace }, |
5168 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5169 | PACKET_qXfer_btrace_conf }, |
5170 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5171 | PACKET_Qbtrace_conf_bts_size }, |
5172 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5173 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5174 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5175 | PACKET_fork_event_feature }, | |
5176 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5177 | PACKET_vfork_event_feature }, | |
94585166 DB |
5178 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5179 | PACKET_exec_event_feature }, | |
b20a6524 | 5180 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5181 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5182 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5183 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5184 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
5185 | }; |
5186 | ||
c8d5aac9 L |
5187 | static char *remote_support_xml; |
5188 | ||
5189 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5190 | ||
5191 | void | |
6e39997a | 5192 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5193 | { |
5194 | #if defined(HAVE_LIBEXPAT) | |
5195 | if (remote_support_xml == NULL) | |
c4f7c687 | 5196 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5197 | else |
5198 | { | |
5199 | char *copy = xstrdup (remote_support_xml + 13); | |
5200 | char *p = strtok (copy, ","); | |
5201 | ||
5202 | do | |
5203 | { | |
5204 | if (strcmp (p, xml) == 0) | |
5205 | { | |
5206 | /* already there */ | |
5207 | xfree (copy); | |
5208 | return; | |
5209 | } | |
5210 | } | |
5211 | while ((p = strtok (NULL, ",")) != NULL); | |
5212 | xfree (copy); | |
5213 | ||
94b0dee1 PA |
5214 | remote_support_xml = reconcat (remote_support_xml, |
5215 | remote_support_xml, ",", xml, | |
5216 | (char *) NULL); | |
c8d5aac9 L |
5217 | } |
5218 | #endif | |
5219 | } | |
5220 | ||
69b6ecb0 TT |
5221 | static void |
5222 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5223 | { |
69b6ecb0 TT |
5224 | if (!msg->empty ()) |
5225 | msg->append (";"); | |
5226 | msg->append (append); | |
c8d5aac9 L |
5227 | } |
5228 | ||
6b8edb51 PA |
5229 | void |
5230 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5231 | { |
5232 | struct remote_state *rs = get_remote_state (); | |
5233 | char *next; | |
5234 | int i; | |
5235 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5236 | ||
5237 | /* The packet support flags are handled differently for this packet | |
5238 | than for most others. We treat an error, a disabled packet, and | |
5239 | an empty response identically: any features which must be reported | |
5240 | to be used will be automatically disabled. An empty buffer | |
5241 | accomplishes this, since that is also the representation for a list | |
5242 | containing no features. */ | |
5243 | ||
5244 | rs->buf[0] = 0; | |
4082afcc | 5245 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5246 | { |
69b6ecb0 | 5247 | std::string q; |
c8d5aac9 | 5248 | |
73b8c1fd | 5249 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5250 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5251 | |
f7e6eed5 | 5252 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5253 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5254 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5255 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5256 | |
69b6ecb0 | 5257 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5258 | |
8020350c DB |
5259 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5260 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5261 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5262 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5263 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5264 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5265 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5266 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5267 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5268 | |
750ce8d1 | 5269 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5270 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5271 | |
65706a29 | 5272 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5273 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5274 | |
f2faf941 | 5275 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5276 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5277 | |
b35d5edb PA |
5278 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5279 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5280 | if (remote_support_xml != NULL |
5281 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5282 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5283 | |
69b6ecb0 TT |
5284 | q = "qSupported:" + q; |
5285 | putpkt (q.c_str ()); | |
94b0dee1 | 5286 | |
8d64371b | 5287 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5288 | |
5289 | /* If an error occured, warn, but do not return - just reset the | |
5290 | buffer to empty and go on to disable features. */ | |
5291 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5292 | == PACKET_ERROR) | |
5293 | { | |
8d64371b | 5294 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5295 | rs->buf[0] = 0; |
5296 | } | |
5297 | } | |
5298 | ||
5299 | memset (seen, 0, sizeof (seen)); | |
5300 | ||
8d64371b | 5301 | next = rs->buf.data (); |
be2a5f71 DJ |
5302 | while (*next) |
5303 | { | |
5304 | enum packet_support is_supported; | |
5305 | char *p, *end, *name_end, *value; | |
5306 | ||
5307 | /* First separate out this item from the rest of the packet. If | |
5308 | there's another item after this, we overwrite the separator | |
5309 | (terminated strings are much easier to work with). */ | |
5310 | p = next; | |
5311 | end = strchr (p, ';'); | |
5312 | if (end == NULL) | |
5313 | { | |
5314 | end = p + strlen (p); | |
5315 | next = end; | |
5316 | } | |
5317 | else | |
5318 | { | |
89be2091 DJ |
5319 | *end = '\0'; |
5320 | next = end + 1; | |
5321 | ||
be2a5f71 DJ |
5322 | if (end == p) |
5323 | { | |
5324 | warning (_("empty item in \"qSupported\" response")); | |
5325 | continue; | |
5326 | } | |
be2a5f71 DJ |
5327 | } |
5328 | ||
5329 | name_end = strchr (p, '='); | |
5330 | if (name_end) | |
5331 | { | |
5332 | /* This is a name=value entry. */ | |
5333 | is_supported = PACKET_ENABLE; | |
5334 | value = name_end + 1; | |
5335 | *name_end = '\0'; | |
5336 | } | |
5337 | else | |
5338 | { | |
5339 | value = NULL; | |
5340 | switch (end[-1]) | |
5341 | { | |
5342 | case '+': | |
5343 | is_supported = PACKET_ENABLE; | |
5344 | break; | |
5345 | ||
5346 | case '-': | |
5347 | is_supported = PACKET_DISABLE; | |
5348 | break; | |
5349 | ||
5350 | case '?': | |
5351 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5352 | break; | |
5353 | ||
5354 | default: | |
3e43a32a MS |
5355 | warning (_("unrecognized item \"%s\" " |
5356 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5357 | continue; |
5358 | } | |
5359 | end[-1] = '\0'; | |
5360 | } | |
5361 | ||
5362 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5363 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5364 | { | |
5365 | const struct protocol_feature *feature; | |
5366 | ||
5367 | seen[i] = 1; | |
5368 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5369 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5370 | break; |
5371 | } | |
5372 | } | |
5373 | ||
5374 | /* If we increased the packet size, make sure to increase the global | |
5375 | buffer size also. We delay this until after parsing the entire | |
5376 | qSupported packet, because this is the same buffer we were | |
5377 | parsing. */ | |
8d64371b TT |
5378 | if (rs->buf.size () < rs->explicit_packet_size) |
5379 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5380 | |
5381 | /* Handle the defaults for unmentioned features. */ | |
5382 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5383 | if (!seen[i]) | |
5384 | { | |
5385 | const struct protocol_feature *feature; | |
5386 | ||
5387 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5388 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5389 | } |
5390 | } | |
5391 | ||
048094ac PA |
5392 | /* Serial QUIT handler for the remote serial descriptor. |
5393 | ||
5394 | Defers handling a Ctrl-C until we're done with the current | |
5395 | command/response packet sequence, unless: | |
5396 | ||
5397 | - We're setting up the connection. Don't send a remote interrupt | |
5398 | request, as we're not fully synced yet. Quit immediately | |
5399 | instead. | |
5400 | ||
5401 | - The target has been resumed in the foreground | |
223ffa71 | 5402 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5403 | packet, and we're blocked waiting for the stop reply, thus a |
5404 | Ctrl-C should be immediately sent to the target. | |
5405 | ||
5406 | - We get a second Ctrl-C while still within the same serial read or | |
5407 | write. In that case the serial is seemingly wedged --- offer to | |
5408 | quit/disconnect. | |
5409 | ||
5410 | - We see a second Ctrl-C without target response, after having | |
5411 | previously interrupted the target. In that case the target/stub | |
5412 | is probably wedged --- offer to quit/disconnect. | |
5413 | */ | |
5414 | ||
6b8edb51 PA |
5415 | void |
5416 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5417 | { |
5418 | struct remote_state *rs = get_remote_state (); | |
5419 | ||
5420 | if (check_quit_flag ()) | |
5421 | { | |
5422 | /* If we're starting up, we're not fully synced yet. Quit | |
5423 | immediately. */ | |
5424 | if (rs->starting_up) | |
5425 | quit (); | |
5426 | else if (rs->got_ctrlc_during_io) | |
5427 | { | |
5428 | if (query (_("The target is not responding to GDB commands.\n" | |
5429 | "Stop debugging it? "))) | |
5430 | remote_unpush_and_throw (); | |
5431 | } | |
5432 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5433 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5434 | interrupt_query (); |
5435 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5436 | an interrupt request. */ | |
223ffa71 | 5437 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5438 | target_interrupt (); |
048094ac PA |
5439 | else |
5440 | rs->got_ctrlc_during_io = 1; | |
5441 | } | |
5442 | } | |
5443 | ||
6b8edb51 PA |
5444 | /* The remote_target that is current while the quit handler is |
5445 | overridden with remote_serial_quit_handler. */ | |
5446 | static remote_target *curr_quit_handler_target; | |
5447 | ||
5448 | static void | |
5449 | remote_serial_quit_handler () | |
5450 | { | |
5451 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5452 | } | |
5453 | ||
78a095c3 JK |
5454 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
5455 | on it so remove them first. */ | |
5456 | ||
5457 | static void | |
5458 | remote_unpush_target (void) | |
5459 | { | |
915ef8b1 | 5460 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 5461 | } |
be2a5f71 | 5462 | |
048094ac PA |
5463 | static void |
5464 | remote_unpush_and_throw (void) | |
5465 | { | |
5466 | remote_unpush_target (); | |
5467 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
5468 | } | |
5469 | ||
f6ac5f3d PA |
5470 | void |
5471 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5472 | { |
6b8edb51 | 5473 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5474 | |
c906108c | 5475 | if (name == 0) |
8a3fe4f8 | 5476 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5477 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5478 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5479 | |
2d717e4f | 5480 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5481 | Ask this question first, before target_preopen has a chance to kill |
5482 | anything. */ | |
6b8edb51 | 5483 | if (curr_remote != NULL && !have_inferiors ()) |
2d717e4f | 5484 | { |
78a095c3 JK |
5485 | if (from_tty |
5486 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5487 | error (_("Still connected.")); |
5488 | } | |
5489 | ||
78a095c3 | 5490 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5491 | target_preopen (from_tty); |
5492 | ||
ad9a8f3f | 5493 | remote_fileio_reset (); |
1dd41f16 NS |
5494 | reopen_exec_file (); |
5495 | reread_symbols (); | |
5496 | ||
6b8edb51 PA |
5497 | remote_target *remote |
5498 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5499 | target_ops_up target_holder (remote); | |
5500 | ||
5501 | remote_state *rs = remote->get_remote_state (); | |
5502 | ||
5503 | /* See FIXME above. */ | |
5504 | if (!target_async_permitted) | |
5505 | rs->wait_forever_enabled_p = 1; | |
5506 | ||
5d93a237 TT |
5507 | rs->remote_desc = remote_serial_open (name); |
5508 | if (!rs->remote_desc) | |
c906108c SS |
5509 | perror_with_name (name); |
5510 | ||
5511 | if (baud_rate != -1) | |
5512 | { | |
5d93a237 | 5513 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5514 | { |
9b74d5d3 KB |
5515 | /* The requested speed could not be set. Error out to |
5516 | top level after closing remote_desc. Take care to | |
5517 | set remote_desc to NULL to avoid closing remote_desc | |
5518 | more than once. */ | |
5d93a237 TT |
5519 | serial_close (rs->remote_desc); |
5520 | rs->remote_desc = NULL; | |
c906108c SS |
5521 | perror_with_name (name); |
5522 | } | |
5523 | } | |
5524 | ||
236af5e3 | 5525 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5526 | serial_raw (rs->remote_desc); |
c906108c SS |
5527 | |
5528 | /* If there is something sitting in the buffer we might take it as a | |
5529 | response to a command, which would be bad. */ | |
5d93a237 | 5530 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5531 | |
5532 | if (from_tty) | |
5533 | { | |
5534 | puts_filtered ("Remote debugging using "); | |
5535 | puts_filtered (name); | |
5536 | puts_filtered ("\n"); | |
5537 | } | |
d9f719f1 | 5538 | |
6b8edb51 | 5539 | /* Switch to using the remote target now. */ |
dea57a62 | 5540 | push_target (std::move (target_holder)); |
c906108c | 5541 | |
74531fed | 5542 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5543 | rs->remote_async_inferior_event_token |
74531fed | 5544 | = create_async_event_handler (remote_async_inferior_event_handler, |
6b8edb51 PA |
5545 | remote); |
5546 | rs->notif_state = remote_notif_state_allocate (remote); | |
74531fed | 5547 | |
be2a5f71 DJ |
5548 | /* Reset the target state; these things will be queried either by |
5549 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5550 | reset_all_packet_configs_support (); |
74531fed | 5551 | rs->cached_wait_status = 0; |
be2a5f71 | 5552 | rs->explicit_packet_size = 0; |
a6f3e723 | 5553 | rs->noack_mode = 0; |
82f73884 | 5554 | rs->extended = extended_p; |
e24a49d8 | 5555 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5556 | rs->ctrlc_pending_p = 0; |
048094ac | 5557 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5558 | |
47f8a51d TT |
5559 | rs->general_thread = not_sent_ptid; |
5560 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5561 | rs->remote_traceframe_number = -1; |
c906108c | 5562 | |
3a00c802 PA |
5563 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5564 | ||
9d1f7ab2 | 5565 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5566 | rs->use_threadinfo_query = 1; |
5567 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5568 | |
dd194f6b | 5569 | rs->readahead_cache.invalidate (); |
80152258 | 5570 | |
c6ebd6cf | 5571 | if (target_async_permitted) |
92d1e331 | 5572 | { |
92d1e331 DJ |
5573 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5574 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5575 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5576 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5577 | around this. Eventually a mechanism that allows |
92d1e331 | 5578 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5579 | implemented. */ |
6b8edb51 | 5580 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5581 | } |
5582 | ||
23860348 | 5583 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5584 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5585 | |
36918e70 | 5586 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5587 | target (we'd otherwise be in an inconsistent state) and then |
5588 | propogate the error on up the exception chain. This ensures that | |
5589 | the caller doesn't stumble along blindly assuming that the | |
5590 | function succeeded. The CLI doesn't have this problem but other | |
5591 | UI's, such as MI do. | |
36918e70 AC |
5592 | |
5593 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5594 | this function should return an error indication letting the | |
ce2826aa | 5595 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5596 | ``target remote'' is directly wired to this function making that |
5597 | impossible. On a positive note, the CLI side of this problem has | |
5598 | been fixed - the function set_cmd_context() makes it possible for | |
5599 | all the ``target ....'' commands to share a common callback | |
5600 | function. See cli-dump.c. */ | |
109c3e39 | 5601 | { |
2d717e4f | 5602 | |
492d29ea | 5603 | TRY |
04bd08de | 5604 | { |
6b8edb51 | 5605 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5606 | } |
492d29ea | 5607 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5608 | { |
c8d104ad PA |
5609 | /* Pop the partially set up target - unless something else did |
5610 | already before throwing the exception. */ | |
6b8edb51 | 5611 | if (ex.error != TARGET_CLOSE_ERROR) |
78a095c3 | 5612 | remote_unpush_target (); |
109c3e39 AC |
5613 | throw_exception (ex); |
5614 | } | |
492d29ea | 5615 | END_CATCH |
109c3e39 | 5616 | } |
c906108c | 5617 | |
6b8edb51 | 5618 | remote_btrace_reset (rs); |
f4abbc16 | 5619 | |
c6ebd6cf | 5620 | if (target_async_permitted) |
6b8edb51 | 5621 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5622 | } |
5623 | ||
de0d863e DB |
5624 | /* Detach the specified process. */ |
5625 | ||
6b8edb51 PA |
5626 | void |
5627 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5628 | { |
5629 | struct remote_state *rs = get_remote_state (); | |
5630 | ||
4c7333b3 PA |
5631 | /* This should not be necessary, but the handling for D;PID in |
5632 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5633 | selected process points to the same process we're detaching, | |
5634 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5635 | does not. Since it's easy and cheap, work around it by forcing | |
5636 | GDBserver to select GDB's current process. */ | |
5637 | set_general_process (); | |
5638 | ||
de0d863e | 5639 | if (remote_multi_process_p (rs)) |
8d64371b | 5640 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5641 | else |
8d64371b | 5642 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5643 | |
5644 | putpkt (rs->buf); | |
8d64371b | 5645 | getpkt (&rs->buf, 0); |
de0d863e DB |
5646 | |
5647 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5648 | ; | |
5649 | else if (rs->buf[0] == '\0') | |
5650 | error (_("Remote doesn't know how to detach")); | |
5651 | else | |
5652 | error (_("Can't detach process.")); | |
5653 | } | |
5654 | ||
5655 | /* This detaches a program to which we previously attached, using | |
5656 | inferior_ptid to identify the process. After this is done, GDB | |
5657 | can be used to debug some other program. We better not have left | |
5658 | any breakpoints in the target program or it'll die when it hits | |
5659 | one. */ | |
c906108c | 5660 | |
6b8edb51 | 5661 | void |
00431a78 | 5662 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5663 | { |
e99b03dc | 5664 | int pid = inferior_ptid.pid (); |
d01949b6 | 5665 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5666 | int is_fork_parent; |
c906108c | 5667 | |
2d717e4f DJ |
5668 | if (!target_has_execution) |
5669 | error (_("No process to detach from.")); | |
5670 | ||
0f48b757 | 5671 | target_announce_detach (from_tty); |
7cee1e54 | 5672 | |
c906108c | 5673 | /* Tell the remote target to detach. */ |
de0d863e | 5674 | remote_detach_pid (pid); |
82f73884 | 5675 | |
8020350c DB |
5676 | /* Exit only if this is the only active inferior. */ |
5677 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5678 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5679 | |
00431a78 PA |
5680 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5681 | ||
de0d863e DB |
5682 | /* Check to see if we are detaching a fork parent. Note that if we |
5683 | are detaching a fork child, tp == NULL. */ | |
5684 | is_fork_parent = (tp != NULL | |
5685 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5686 | ||
5687 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5688 | breakpoints that should be available for the followed inferior. */ | |
5689 | if (!is_fork_parent) | |
f67c0c91 | 5690 | { |
249b5733 PA |
5691 | /* Save the pid as a string before mourning, since that will |
5692 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5693 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5694 | |
5695 | target_mourn_inferior (inferior_ptid); | |
5696 | if (print_inferior_events) | |
5697 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5698 | inf->num, infpid.c_str ()); | |
5699 | } | |
de0d863e DB |
5700 | else |
5701 | { | |
5702 | inferior_ptid = null_ptid; | |
00431a78 | 5703 | detach_inferior (current_inferior ()); |
de0d863e | 5704 | } |
2d717e4f DJ |
5705 | } |
5706 | ||
f6ac5f3d PA |
5707 | void |
5708 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5709 | { |
00431a78 | 5710 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5711 | } |
5712 | ||
f6ac5f3d PA |
5713 | void |
5714 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5715 | { |
00431a78 | 5716 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5717 | } |
5718 | ||
5719 | /* Target follow-fork function for remote targets. On entry, and | |
5720 | at return, the current inferior is the fork parent. | |
5721 | ||
5722 | Note that although this is currently only used for extended-remote, | |
5723 | it is named remote_follow_fork in anticipation of using it for the | |
5724 | remote target as well. */ | |
5725 | ||
f6ac5f3d PA |
5726 | int |
5727 | remote_target::follow_fork (int follow_child, int detach_fork) | |
de0d863e DB |
5728 | { |
5729 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5730 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5731 | |
c269dbdb DB |
5732 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5733 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5734 | { |
5735 | /* When following the parent and detaching the child, we detach | |
5736 | the child here. For the case of following the child and | |
5737 | detaching the parent, the detach is done in the target- | |
5738 | independent follow fork code in infrun.c. We can't use | |
5739 | target_detach when detaching an unfollowed child because | |
5740 | the client side doesn't know anything about the child. */ | |
5741 | if (detach_fork && !follow_child) | |
5742 | { | |
5743 | /* Detach the fork child. */ | |
5744 | ptid_t child_ptid; | |
5745 | pid_t child_pid; | |
5746 | ||
5747 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5748 | child_pid = child_ptid.pid (); |
de0d863e DB |
5749 | |
5750 | remote_detach_pid (child_pid); | |
de0d863e DB |
5751 | } |
5752 | } | |
5753 | return 0; | |
c906108c SS |
5754 | } |
5755 | ||
94585166 DB |
5756 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5757 | in the program space of the new inferior. On entry and at return the | |
5758 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5759 | inferior, which may be the same as the exec'ing inferior unless | |
5760 | follow-exec-mode is "new". */ | |
5761 | ||
f6ac5f3d PA |
5762 | void |
5763 | remote_target::follow_exec (struct inferior *inf, char *execd_pathname) | |
94585166 DB |
5764 | { |
5765 | /* We know that this is a target file name, so if it has the "target:" | |
5766 | prefix we strip it off before saving it in the program space. */ | |
5767 | if (is_target_filename (execd_pathname)) | |
5768 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5769 | ||
5770 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5771 | } | |
5772 | ||
6ad8ae5c DJ |
5773 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5774 | ||
f6ac5f3d PA |
5775 | void |
5776 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5777 | { |
43ff13b4 | 5778 | if (args) |
2d717e4f | 5779 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5780 | |
8020350c DB |
5781 | /* Make sure we unpush even the extended remote targets. Calling |
5782 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5783 | unpush if there is more than one inferior left. */ | |
f6ac5f3d | 5784 | unpush_target (this); |
8020350c | 5785 | generic_mourn_inferior (); |
2d717e4f | 5786 | |
43ff13b4 JM |
5787 | if (from_tty) |
5788 | puts_filtered ("Ending remote debugging.\n"); | |
5789 | } | |
5790 | ||
2d717e4f DJ |
5791 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5792 | be chatty about it. */ | |
5793 | ||
f6ac5f3d PA |
5794 | void |
5795 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5796 | { |
5797 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5798 | int pid; |
96ef3384 | 5799 | char *wait_status = NULL; |
2d717e4f | 5800 | |
74164c56 | 5801 | pid = parse_pid_to_attach (args); |
2d717e4f | 5802 | |
74164c56 JK |
5803 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5804 | way as in other targets. */ | |
2d717e4f | 5805 | |
4082afcc | 5806 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5807 | error (_("This target does not support attaching to a process")); |
5808 | ||
7cee1e54 PA |
5809 | if (from_tty) |
5810 | { | |
5811 | char *exec_file = get_exec_file (0); | |
5812 | ||
5813 | if (exec_file) | |
5814 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
f2907e49 | 5815 | target_pid_to_str (ptid_t (pid))); |
7cee1e54 PA |
5816 | else |
5817 | printf_unfiltered (_("Attaching to %s\n"), | |
f2907e49 | 5818 | target_pid_to_str (ptid_t (pid))); |
7cee1e54 PA |
5819 | } |
5820 | ||
8d64371b | 5821 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 5822 | putpkt (rs->buf); |
8d64371b | 5823 | getpkt (&rs->buf, 0); |
2d717e4f | 5824 | |
4082afcc PA |
5825 | switch (packet_ok (rs->buf, |
5826 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5827 | { |
4082afcc | 5828 | case PACKET_OK: |
6efcd9a8 | 5829 | if (!target_is_non_stop_p ()) |
74531fed PA |
5830 | { |
5831 | /* Save the reply for later. */ | |
8d64371b TT |
5832 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5833 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 5834 | } |
8d64371b | 5835 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5836 | error (_("Attaching to %s failed with: %s"), |
f2907e49 | 5837 | target_pid_to_str (ptid_t (pid)), |
8d64371b | 5838 | rs->buf.data ()); |
4082afcc PA |
5839 | break; |
5840 | case PACKET_UNKNOWN: | |
5841 | error (_("This target does not support attaching to a process")); | |
5842 | default: | |
5843 | error (_("Attaching to %s failed"), | |
f2907e49 | 5844 | target_pid_to_str (ptid_t (pid))); |
2d717e4f | 5845 | } |
2d717e4f | 5846 | |
1b6e6f5c | 5847 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5848 | |
f2907e49 | 5849 | inferior_ptid = ptid_t (pid); |
79d7f229 | 5850 | |
6efcd9a8 | 5851 | if (target_is_non_stop_p ()) |
bad34192 PA |
5852 | { |
5853 | struct thread_info *thread; | |
79d7f229 | 5854 | |
bad34192 | 5855 | /* Get list of threads. */ |
f6ac5f3d | 5856 | update_thread_list (); |
82f73884 | 5857 | |
00431a78 | 5858 | thread = first_thread_of_inferior (current_inferior ()); |
bad34192 PA |
5859 | if (thread) |
5860 | inferior_ptid = thread->ptid; | |
5861 | else | |
f2907e49 | 5862 | inferior_ptid = ptid_t (pid); |
bad34192 PA |
5863 | |
5864 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5865 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5866 | } |
74531fed | 5867 | else |
bad34192 PA |
5868 | { |
5869 | /* Now, if we have thread information, update inferior_ptid. */ | |
5870 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5871 | ||
5872 | /* Add the main thread to the thread list. */ | |
00aecdcf PA |
5873 | thread_info *thr = add_thread_silent (inferior_ptid); |
5874 | /* Don't consider the thread stopped until we've processed the | |
5875 | saved stop reply. */ | |
5876 | set_executing (thr->ptid, true); | |
bad34192 | 5877 | } |
c0a2216e | 5878 | |
96ef3384 UW |
5879 | /* Next, if the target can specify a description, read it. We do |
5880 | this before anything involving memory or registers. */ | |
5881 | target_find_description (); | |
5882 | ||
6efcd9a8 | 5883 | if (!target_is_non_stop_p ()) |
74531fed PA |
5884 | { |
5885 | /* Use the previously fetched status. */ | |
5886 | gdb_assert (wait_status != NULL); | |
5887 | ||
5888 | if (target_can_async_p ()) | |
5889 | { | |
722247f1 | 5890 | struct notif_event *reply |
6b8edb51 | 5891 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 5892 | |
722247f1 | 5893 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5894 | |
6a3753b3 | 5895 | target_async (1); |
74531fed PA |
5896 | } |
5897 | else | |
5898 | { | |
5899 | gdb_assert (wait_status != NULL); | |
8d64371b | 5900 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
5901 | rs->cached_wait_status = 1; |
5902 | } | |
5903 | } | |
5904 | else | |
5905 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5906 | } |
5907 | ||
b9c1d481 AS |
5908 | /* Implementation of the to_post_attach method. */ |
5909 | ||
f6ac5f3d PA |
5910 | void |
5911 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5912 | { |
6efcd9a8 PA |
5913 | /* Get text, data & bss offsets. */ |
5914 | get_offsets (); | |
5915 | ||
b9c1d481 AS |
5916 | /* In certain cases GDB might not have had the chance to start |
5917 | symbol lookup up until now. This could happen if the debugged | |
5918 | binary is not using shared libraries, the vsyscall page is not | |
5919 | present (on Linux) and the binary itself hadn't changed since the | |
5920 | debugging process was started. */ | |
5921 | if (symfile_objfile != NULL) | |
5922 | remote_check_symbols(); | |
5923 | } | |
5924 | ||
c906108c | 5925 | \f |
506fb367 DJ |
5926 | /* Check for the availability of vCont. This function should also check |
5927 | the response. */ | |
c906108c | 5928 | |
6b8edb51 PA |
5929 | void |
5930 | remote_target::remote_vcont_probe () | |
c906108c | 5931 | { |
6b8edb51 | 5932 | remote_state *rs = get_remote_state (); |
2e9f7625 | 5933 | char *buf; |
6d820c5c | 5934 | |
8d64371b | 5935 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 5936 | putpkt (rs->buf); |
8d64371b TT |
5937 | getpkt (&rs->buf, 0); |
5938 | buf = rs->buf.data (); | |
c906108c | 5939 | |
506fb367 | 5940 | /* Make sure that the features we assume are supported. */ |
61012eef | 5941 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5942 | { |
5943 | char *p = &buf[5]; | |
750ce8d1 | 5944 | int support_c, support_C; |
506fb367 | 5945 | |
750ce8d1 YQ |
5946 | rs->supports_vCont.s = 0; |
5947 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5948 | support_c = 0; |
5949 | support_C = 0; | |
d458bd84 | 5950 | rs->supports_vCont.t = 0; |
c1e36e3e | 5951 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5952 | while (p && *p == ';') |
5953 | { | |
5954 | p++; | |
5955 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5956 | rs->supports_vCont.s = 1; |
506fb367 | 5957 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5958 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5959 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5960 | support_c = 1; | |
5961 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5962 | support_C = 1; | |
74531fed | 5963 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5964 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5965 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5966 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5967 | |
5968 | p = strchr (p, ';'); | |
5969 | } | |
c906108c | 5970 | |
750ce8d1 YQ |
5971 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5972 | BUF will make packet_ok disable the packet. */ | |
5973 | if (!support_c || !support_C) | |
506fb367 DJ |
5974 | buf[0] = 0; |
5975 | } | |
c906108c | 5976 | |
8d64371b | 5977 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5978 | } |
c906108c | 5979 | |
0d8f58ca PA |
5980 | /* Helper function for building "vCont" resumptions. Write a |
5981 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5982 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5983 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5984 | resumed thread should be single-stepped and/or signalled. If PTID | |
5985 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5986 | represents a process, then all threads of the process are resumed; | |
5987 | the thread to be stepped and/or signalled is given in the global | |
5988 | INFERIOR_PTID. */ | |
5989 | ||
6b8edb51 PA |
5990 | char * |
5991 | remote_target::append_resumption (char *p, char *endp, | |
5992 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
5993 | { |
5994 | struct remote_state *rs = get_remote_state (); | |
5995 | ||
a493e3e2 | 5996 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5997 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5998 | else if (step |
5999 | /* GDB is willing to range step. */ | |
6000 | && use_range_stepping | |
6001 | /* Target supports range stepping. */ | |
6002 | && rs->supports_vCont.r | |
6003 | /* We don't currently support range stepping multiple | |
6004 | threads with a wildcard (though the protocol allows it, | |
6005 | so stubs shouldn't make an active effort to forbid | |
6006 | it). */ | |
0e998d96 | 6007 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6008 | { |
6009 | struct thread_info *tp; | |
6010 | ||
d7e15655 | 6011 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6012 | { |
6013 | /* If we don't know about the target thread's tid, then | |
6014 | we're resuming magic_null_ptid (see caller). */ | |
6015 | tp = find_thread_ptid (magic_null_ptid); | |
6016 | } | |
6017 | else | |
6018 | tp = find_thread_ptid (ptid); | |
6019 | gdb_assert (tp != NULL); | |
6020 | ||
6021 | if (tp->control.may_range_step) | |
6022 | { | |
6023 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6024 | ||
6025 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6026 | phex_nz (tp->control.step_range_start, | |
6027 | addr_size), | |
6028 | phex_nz (tp->control.step_range_end, | |
6029 | addr_size)); | |
6030 | } | |
6031 | else | |
6032 | p += xsnprintf (p, endp - p, ";s"); | |
6033 | } | |
0d8f58ca PA |
6034 | else if (step) |
6035 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6036 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6037 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6038 | else | |
6039 | p += xsnprintf (p, endp - p, ";c"); | |
6040 | ||
0e998d96 | 6041 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6042 | { |
6043 | ptid_t nptid; | |
6044 | ||
6045 | /* All (-1) threads of process. */ | |
e99b03dc | 6046 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6047 | |
6048 | p += xsnprintf (p, endp - p, ":"); | |
6049 | p = write_ptid (p, endp, nptid); | |
6050 | } | |
d7e15655 | 6051 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6052 | { |
6053 | p += xsnprintf (p, endp - p, ":"); | |
6054 | p = write_ptid (p, endp, ptid); | |
6055 | } | |
6056 | ||
6057 | return p; | |
6058 | } | |
6059 | ||
799a2abe PA |
6060 | /* Clear the thread's private info on resume. */ |
6061 | ||
6062 | static void | |
6063 | resume_clear_thread_private_info (struct thread_info *thread) | |
6064 | { | |
6065 | if (thread->priv != NULL) | |
6066 | { | |
7aabaf9d SM |
6067 | remote_thread_info *priv = get_remote_thread_info (thread); |
6068 | ||
6069 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6070 | priv->watch_data_address = 0; | |
799a2abe PA |
6071 | } |
6072 | } | |
6073 | ||
e5ef252a PA |
6074 | /* Append a vCont continue-with-signal action for threads that have a |
6075 | non-zero stop signal. */ | |
6076 | ||
6b8edb51 PA |
6077 | char * |
6078 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6079 | ptid_t ptid) | |
e5ef252a | 6080 | { |
08036331 PA |
6081 | for (thread_info *thread : all_non_exited_threads (ptid)) |
6082 | if (inferior_ptid != thread->ptid | |
70509625 | 6083 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6084 | { |
6085 | p = append_resumption (p, endp, thread->ptid, | |
6086 | 0, thread->suspend.stop_signal); | |
6087 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6088 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6089 | } |
6090 | ||
6091 | return p; | |
6092 | } | |
6093 | ||
7b68ffbb PA |
6094 | /* Set the target running, using the packets that use Hc |
6095 | (c/s/C/S). */ | |
6096 | ||
6b8edb51 PA |
6097 | void |
6098 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6099 | gdb_signal siggnal) | |
7b68ffbb PA |
6100 | { |
6101 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6102 | char *buf; |
6103 | ||
6104 | rs->last_sent_signal = siggnal; | |
6105 | rs->last_sent_step = step; | |
6106 | ||
6107 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6108 | thread. */ | |
d7e15655 | 6109 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6110 | set_continue_thread (any_thread_ptid); |
6111 | else | |
6112 | set_continue_thread (ptid); | |
6113 | ||
08036331 | 6114 | for (thread_info *thread : all_non_exited_threads ()) |
7b68ffbb PA |
6115 | resume_clear_thread_private_info (thread); |
6116 | ||
8d64371b | 6117 | buf = rs->buf.data (); |
6b8edb51 | 6118 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6119 | { |
6120 | /* We don't pass signals to the target in reverse exec mode. */ | |
6121 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6122 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6123 | siggnal); | |
6124 | ||
6125 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6126 | error (_("Remote reverse-step not supported.")); | |
6127 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6128 | error (_("Remote reverse-continue not supported.")); | |
6129 | ||
6130 | strcpy (buf, step ? "bs" : "bc"); | |
6131 | } | |
6132 | else if (siggnal != GDB_SIGNAL_0) | |
6133 | { | |
6134 | buf[0] = step ? 'S' : 'C'; | |
6135 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6136 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6137 | buf[3] = '\0'; | |
6138 | } | |
6139 | else | |
6140 | strcpy (buf, step ? "s" : "c"); | |
6141 | ||
6142 | putpkt (buf); | |
6143 | } | |
6144 | ||
506fb367 DJ |
6145 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6146 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6147 | resumed thread should be single-stepped and/or signalled. If PTID |
6148 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6149 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6150 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6151 | |
7b68ffbb PA |
6152 | This function issues a strict subset of all possible vCont commands |
6153 | at the moment. */ | |
44eaed12 | 6154 | |
6b8edb51 PA |
6155 | int |
6156 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6157 | enum gdb_signal siggnal) | |
506fb367 DJ |
6158 | { |
6159 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6160 | char *p; |
6161 | char *endp; | |
44eaed12 | 6162 | |
7b68ffbb | 6163 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6164 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6165 | return 0; |
6166 | ||
4082afcc | 6167 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6168 | remote_vcont_probe (); |
44eaed12 | 6169 | |
4082afcc | 6170 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6171 | return 0; |
44eaed12 | 6172 | |
8d64371b TT |
6173 | p = rs->buf.data (); |
6174 | endp = p + get_remote_packet_size (); | |
82f73884 | 6175 | |
506fb367 DJ |
6176 | /* If we could generate a wider range of packets, we'd have to worry |
6177 | about overflowing BUF. Should there be a generic | |
6178 | "multi-part-packet" packet? */ | |
6179 | ||
0d8f58ca PA |
6180 | p += xsnprintf (p, endp - p, "vCont"); |
6181 | ||
d7e15655 | 6182 | if (ptid == magic_null_ptid) |
c906108c | 6183 | { |
79d7f229 PA |
6184 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6185 | so we don't have any TID numbers the inferior will | |
6186 | understand. Make sure to only send forms that do not specify | |
6187 | a TID. */ | |
a9cbf802 | 6188 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6189 | } |
d7e15655 | 6190 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6191 | { |
0d8f58ca PA |
6192 | /* Resume all threads (of all processes, or of a single |
6193 | process), with preference for INFERIOR_PTID. This assumes | |
6194 | inferior_ptid belongs to the set of all threads we are about | |
6195 | to resume. */ | |
a493e3e2 | 6196 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6197 | { |
0d8f58ca PA |
6198 | /* Step inferior_ptid, with or without signal. */ |
6199 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6200 | } |
0d8f58ca | 6201 | |
e5ef252a PA |
6202 | /* Also pass down any pending signaled resumption for other |
6203 | threads not the current. */ | |
6204 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6205 | ||
0d8f58ca | 6206 | /* And continue others without a signal. */ |
a493e3e2 | 6207 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6208 | } |
6209 | else | |
506fb367 DJ |
6210 | { |
6211 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6212 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6213 | } |
c906108c | 6214 | |
8d64371b | 6215 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6216 | putpkt (rs->buf); |
506fb367 | 6217 | |
6efcd9a8 | 6218 | if (target_is_non_stop_p ()) |
74531fed PA |
6219 | { |
6220 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6221 | reply will be reported asynchronously by means of a `%Stop' | |
6222 | notification. */ | |
8d64371b TT |
6223 | getpkt (&rs->buf, 0); |
6224 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6225 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6226 | rs->buf.data ()); | |
74531fed PA |
6227 | } |
6228 | ||
506fb367 | 6229 | return 1; |
c906108c | 6230 | } |
43ff13b4 | 6231 | |
506fb367 DJ |
6232 | /* Tell the remote machine to resume. */ |
6233 | ||
f6ac5f3d PA |
6234 | void |
6235 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6236 | { |
d01949b6 | 6237 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6238 | |
85ad3aaf PA |
6239 | /* When connected in non-stop mode, the core resumes threads |
6240 | individually. Resuming remote threads directly in target_resume | |
6241 | would thus result in sending one packet per thread. Instead, to | |
6242 | minimize roundtrip latency, here we just store the resume | |
6243 | request; the actual remote resumption will be done in | |
6244 | target_commit_resume / remote_commit_resume, where we'll be able | |
6245 | to do vCont action coalescing. */ | |
f6ac5f3d | 6246 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6247 | { |
7aabaf9d | 6248 | remote_thread_info *remote_thr; |
85ad3aaf | 6249 | |
d7e15655 | 6250 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
7aabaf9d | 6251 | remote_thr = get_remote_thread_info (inferior_ptid); |
85ad3aaf | 6252 | else |
7aabaf9d SM |
6253 | remote_thr = get_remote_thread_info (ptid); |
6254 | ||
85ad3aaf PA |
6255 | remote_thr->last_resume_step = step; |
6256 | remote_thr->last_resume_sig = siggnal; | |
6257 | return; | |
6258 | } | |
6259 | ||
722247f1 YQ |
6260 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6261 | (explained in remote-notif.c:handle_notification) so | |
6262 | remote_notif_process is not called. We need find a place where | |
6263 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6264 | before resuming inferior, because inferior was stopped and no RSP | |
6265 | traffic at that moment. */ | |
6efcd9a8 | 6266 | if (!target_is_non_stop_p ()) |
5965e028 | 6267 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6268 | |
f6ac5f3d | 6269 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6270 | |
7b68ffbb PA |
6271 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6272 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6273 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6274 | |
2acceee2 | 6275 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6276 | with the event loop. NOTE: this is the one place where all the |
6277 | execution commands end up. We could alternatively do this in each | |
23860348 | 6278 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6279 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6280 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6281 | NOT asynchronously. */ |
362646f5 | 6282 | if (target_can_async_p ()) |
6a3753b3 | 6283 | target_async (1); |
e24a49d8 PA |
6284 | |
6285 | /* We've just told the target to resume. The remote server will | |
6286 | wait for the inferior to stop, and then send a stop reply. In | |
6287 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6288 | because the stub wouldn't be ready to process it. This applies |
6289 | only to the base all-stop protocol, however. In non-stop (which | |
6290 | only supports vCont), the stub replies with an "OK", and is | |
6291 | immediate able to process further serial input. */ | |
6efcd9a8 | 6292 | if (!target_is_non_stop_p ()) |
74531fed | 6293 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6294 | } |
85ad3aaf | 6295 | |
85ad3aaf PA |
6296 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6297 | ||
6298 | /* Private per-inferior info for target remote processes. */ | |
6299 | ||
089354bb | 6300 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6301 | { |
6302 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6303 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6304 | }; |
6305 | ||
089354bb SM |
6306 | /* Get the remote private inferior data associated to INF. */ |
6307 | ||
6308 | static remote_inferior * | |
6309 | get_remote_inferior (inferior *inf) | |
6310 | { | |
6311 | if (inf->priv == NULL) | |
6312 | inf->priv.reset (new remote_inferior); | |
6313 | ||
6314 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6315 | } | |
6316 | ||
f5db4863 | 6317 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6318 | outgoing packet buffer. This is used to send multiple vCont |
6319 | packets if we have more actions than would fit a single packet. */ | |
6320 | ||
f5db4863 | 6321 | class vcont_builder |
85ad3aaf | 6322 | { |
f5db4863 | 6323 | public: |
6b8edb51 PA |
6324 | explicit vcont_builder (remote_target *remote) |
6325 | : m_remote (remote) | |
f5db4863 PA |
6326 | { |
6327 | restart (); | |
6328 | } | |
6329 | ||
6330 | void flush (); | |
6331 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6332 | ||
6333 | private: | |
6334 | void restart (); | |
6335 | ||
6b8edb51 PA |
6336 | /* The remote target. */ |
6337 | remote_target *m_remote; | |
6338 | ||
85ad3aaf PA |
6339 | /* Pointer to the first action. P points here if no action has been |
6340 | appended yet. */ | |
f5db4863 | 6341 | char *m_first_action; |
85ad3aaf PA |
6342 | |
6343 | /* Where the next action will be appended. */ | |
f5db4863 | 6344 | char *m_p; |
85ad3aaf PA |
6345 | |
6346 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6347 | char *m_endp; |
85ad3aaf PA |
6348 | }; |
6349 | ||
6350 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6351 | ||
f5db4863 PA |
6352 | void |
6353 | vcont_builder::restart () | |
85ad3aaf | 6354 | { |
6b8edb51 | 6355 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6356 | |
8d64371b TT |
6357 | m_p = rs->buf.data (); |
6358 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6359 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6360 | m_first_action = m_p; | |
85ad3aaf PA |
6361 | } |
6362 | ||
6363 | /* If the vCont packet being built has any action, send it to the | |
6364 | remote end. */ | |
6365 | ||
f5db4863 PA |
6366 | void |
6367 | vcont_builder::flush () | |
85ad3aaf PA |
6368 | { |
6369 | struct remote_state *rs; | |
6370 | ||
f5db4863 | 6371 | if (m_p == m_first_action) |
85ad3aaf PA |
6372 | return; |
6373 | ||
6b8edb51 PA |
6374 | rs = m_remote->get_remote_state (); |
6375 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6376 | m_remote->getpkt (&rs->buf, 0); |
6377 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6378 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6379 | } |
6380 | ||
6381 | /* The largest action is range-stepping, with its two addresses. This | |
6382 | is more than sufficient. If a new, bigger action is created, it'll | |
6383 | quickly trigger a failed assertion in append_resumption (and we'll | |
6384 | just bump this). */ | |
6385 | #define MAX_ACTION_SIZE 200 | |
6386 | ||
6387 | /* Append a new vCont action in the outgoing packet being built. If | |
6388 | the action doesn't fit the packet along with previous actions, push | |
6389 | what we've got so far to the remote end and start over a new vCont | |
6390 | packet (with the new action). */ | |
6391 | ||
f5db4863 PA |
6392 | void |
6393 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6394 | { |
6395 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6396 | |
6b8edb51 PA |
6397 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6398 | ptid, step, siggnal); | |
85ad3aaf PA |
6399 | |
6400 | /* Check whether this new action would fit in the vCont packet along | |
6401 | with previous actions. If not, send what we've got so far and | |
6402 | start a new vCont packet. */ | |
f5db4863 PA |
6403 | size_t rsize = endp - buf; |
6404 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6405 | { |
f5db4863 PA |
6406 | flush (); |
6407 | restart (); | |
85ad3aaf PA |
6408 | |
6409 | /* Should now fit. */ | |
f5db4863 | 6410 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6411 | } |
6412 | ||
f5db4863 PA |
6413 | memcpy (m_p, buf, rsize); |
6414 | m_p += rsize; | |
6415 | *m_p = '\0'; | |
85ad3aaf PA |
6416 | } |
6417 | ||
6418 | /* to_commit_resume implementation. */ | |
6419 | ||
f6ac5f3d PA |
6420 | void |
6421 | remote_target::commit_resume () | |
85ad3aaf | 6422 | { |
85ad3aaf PA |
6423 | int any_process_wildcard; |
6424 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6425 | |
6426 | /* If connected in all-stop mode, we'd send the remote resume | |
6427 | request directly from remote_resume. Likewise if | |
6428 | reverse-debugging, as there are no defined vCont actions for | |
6429 | reverse execution. */ | |
f6ac5f3d | 6430 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6431 | return; |
6432 | ||
6433 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6434 | instead of resuming all threads of each process individually. | |
6435 | However, if any thread of a process must remain halted, we can't | |
6436 | send wildcard resumes and must send one action per thread. | |
6437 | ||
6438 | Care must be taken to not resume threads/processes the server | |
6439 | side already told us are stopped, but the core doesn't know about | |
6440 | yet, because the events are still in the vStopped notification | |
6441 | queue. For example: | |
6442 | ||
6443 | #1 => vCont s:p1.1;c | |
6444 | #2 <= OK | |
6445 | #3 <= %Stopped T05 p1.1 | |
6446 | #4 => vStopped | |
6447 | #5 <= T05 p1.2 | |
6448 | #6 => vStopped | |
6449 | #7 <= OK | |
6450 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6451 | #9 => vCont s:p1.1;c | |
6452 | ||
6453 | The last vCont above would resume thread p1.2 by mistake, because | |
6454 | the server has no idea that the event for p1.2 had not been | |
6455 | handled yet. | |
6456 | ||
6457 | The server side must similarly ignore resume actions for the | |
6458 | thread that has a pending %Stopped notification (and any other | |
6459 | threads with events pending), until GDB acks the notification | |
6460 | with vStopped. Otherwise, e.g., the following case is | |
6461 | mishandled: | |
6462 | ||
6463 | #1 => g (or any other packet) | |
6464 | #2 <= [registers] | |
6465 | #3 <= %Stopped T05 p1.2 | |
6466 | #4 => vCont s:p1.1;c | |
6467 | #5 <= OK | |
6468 | ||
6469 | Above, the server must not resume thread p1.2. GDB can't know | |
6470 | that p1.2 stopped until it acks the %Stopped notification, and | |
6471 | since from GDB's perspective all threads should be running, it | |
6472 | sends a "c" action. | |
6473 | ||
6474 | Finally, special care must also be given to handling fork/vfork | |
6475 | events. A (v)fork event actually tells us that two processes | |
6476 | stopped -- the parent and the child. Until we follow the fork, | |
6477 | we must not resume the child. Therefore, if we have a pending | |
6478 | fork follow, we must not send a global wildcard resume action | |
6479 | (vCont;c). We can still send process-wide wildcards though. */ | |
6480 | ||
6481 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6482 | may_global_wildcard_vcont = 1; | |
6483 | ||
6484 | /* And assume every process is individually wildcard-able too. */ | |
08036331 | 6485 | for (inferior *inf : all_non_exited_inferiors ()) |
85ad3aaf | 6486 | { |
089354bb SM |
6487 | remote_inferior *priv = get_remote_inferior (inf); |
6488 | ||
6489 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6490 | } |
6491 | ||
6492 | /* Check for any pending events (not reported or processed yet) and | |
6493 | disable process and global wildcard resumes appropriately. */ | |
6494 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6495 | ||
08036331 | 6496 | for (thread_info *tp : all_non_exited_threads ()) |
85ad3aaf PA |
6497 | { |
6498 | /* If a thread of a process is not meant to be resumed, then we | |
6499 | can't wildcard that process. */ | |
6500 | if (!tp->executing) | |
6501 | { | |
089354bb | 6502 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6503 | |
6504 | /* And if we can't wildcard a process, we can't wildcard | |
6505 | everything either. */ | |
6506 | may_global_wildcard_vcont = 0; | |
6507 | continue; | |
6508 | } | |
6509 | ||
6510 | /* If a thread is the parent of an unfollowed fork, then we | |
6511 | can't do a global wildcard, as that would resume the fork | |
6512 | child. */ | |
6513 | if (is_pending_fork_parent_thread (tp)) | |
6514 | may_global_wildcard_vcont = 0; | |
6515 | } | |
6516 | ||
6517 | /* Now let's build the vCont packet(s). Actions must be appended | |
6518 | from narrower to wider scopes (thread -> process -> global). If | |
6519 | we end up with too many actions for a single packet vcont_builder | |
6520 | flushes the current vCont packet to the remote side and starts a | |
6521 | new one. */ | |
6b8edb51 | 6522 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6523 | |
6524 | /* Threads first. */ | |
08036331 | 6525 | for (thread_info *tp : all_non_exited_threads ()) |
85ad3aaf | 6526 | { |
7aabaf9d | 6527 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6528 | |
6529 | if (!tp->executing || remote_thr->vcont_resumed) | |
6530 | continue; | |
6531 | ||
6532 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6533 | ||
6534 | if (!remote_thr->last_resume_step | |
6535 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6536 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6537 | { |
6538 | /* We'll send a wildcard resume instead. */ | |
6539 | remote_thr->vcont_resumed = 1; | |
6540 | continue; | |
6541 | } | |
6542 | ||
f5db4863 | 6543 | vcont_builder.push_action (tp->ptid, |
85ad3aaf PA |
6544 | remote_thr->last_resume_step, |
6545 | remote_thr->last_resume_sig); | |
6546 | remote_thr->vcont_resumed = 1; | |
6547 | } | |
6548 | ||
6549 | /* Now check whether we can send any process-wide wildcard. This is | |
6550 | to avoid sending a global wildcard in the case nothing is | |
6551 | supposed to be resumed. */ | |
6552 | any_process_wildcard = 0; | |
6553 | ||
08036331 | 6554 | for (inferior *inf : all_non_exited_inferiors ()) |
85ad3aaf | 6555 | { |
089354bb | 6556 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6557 | { |
6558 | any_process_wildcard = 1; | |
6559 | break; | |
6560 | } | |
6561 | } | |
6562 | ||
6563 | if (any_process_wildcard) | |
6564 | { | |
6565 | /* If all processes are wildcard-able, then send a single "c" | |
6566 | action, otherwise, send an "all (-1) threads of process" | |
6567 | continue action for each running process, if any. */ | |
6568 | if (may_global_wildcard_vcont) | |
6569 | { | |
f5db4863 PA |
6570 | vcont_builder.push_action (minus_one_ptid, |
6571 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6572 | } |
6573 | else | |
6574 | { | |
08036331 | 6575 | for (inferior *inf : all_non_exited_inferiors ()) |
85ad3aaf | 6576 | { |
089354bb | 6577 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6578 | { |
f2907e49 | 6579 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6580 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6581 | } |
6582 | } | |
6583 | } | |
6584 | } | |
6585 | ||
f5db4863 | 6586 | vcont_builder.flush (); |
85ad3aaf PA |
6587 | } |
6588 | ||
c906108c | 6589 | \f |
43ff13b4 | 6590 | |
74531fed PA |
6591 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6592 | thread, all threads of a remote process, or all threads of all | |
6593 | processes. */ | |
6594 | ||
6b8edb51 PA |
6595 | void |
6596 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6597 | { |
6598 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6599 | char *p = rs->buf.data (); |
6600 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6601 | |
4082afcc | 6602 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6603 | remote_vcont_probe (); |
74531fed | 6604 | |
d458bd84 | 6605 | if (!rs->supports_vCont.t) |
74531fed PA |
6606 | error (_("Remote server does not support stopping threads")); |
6607 | ||
d7e15655 | 6608 | if (ptid == minus_one_ptid |
0e998d96 | 6609 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6610 | p += xsnprintf (p, endp - p, "vCont;t"); |
6611 | else | |
6612 | { | |
6613 | ptid_t nptid; | |
6614 | ||
74531fed PA |
6615 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6616 | ||
0e998d96 | 6617 | if (ptid.is_pid ()) |
74531fed | 6618 | /* All (-1) threads of process. */ |
e99b03dc | 6619 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6620 | else |
6621 | { | |
6622 | /* Small optimization: if we already have a stop reply for | |
6623 | this thread, no use in telling the stub we want this | |
6624 | stopped. */ | |
6625 | if (peek_stop_reply (ptid)) | |
6626 | return; | |
6627 | ||
6628 | nptid = ptid; | |
6629 | } | |
6630 | ||
a9cbf802 | 6631 | write_ptid (p, endp, nptid); |
74531fed PA |
6632 | } |
6633 | ||
6634 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6635 | come in asynchronously by notification. */ | |
6636 | putpkt (rs->buf); | |
8d64371b TT |
6637 | getpkt (&rs->buf, 0); |
6638 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6639 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), | |
6640 | rs->buf.data ()); | |
74531fed PA |
6641 | } |
6642 | ||
bfedc46a PA |
6643 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6644 | interrupt the remote target. It is undefined which thread of which | |
6645 | process reports the interrupt. */ | |
74531fed | 6646 | |
6b8edb51 PA |
6647 | void |
6648 | remote_target::remote_interrupt_as () | |
74531fed PA |
6649 | { |
6650 | struct remote_state *rs = get_remote_state (); | |
6651 | ||
3a29589a DJ |
6652 | rs->ctrlc_pending_p = 1; |
6653 | ||
74531fed PA |
6654 | /* If the inferior is stopped already, but the core didn't know |
6655 | about it yet, just ignore the request. The cached wait status | |
6656 | will be collected in remote_wait. */ | |
6657 | if (rs->cached_wait_status) | |
6658 | return; | |
6659 | ||
9a7071a8 JB |
6660 | /* Send interrupt_sequence to remote target. */ |
6661 | send_interrupt_sequence (); | |
74531fed PA |
6662 | } |
6663 | ||
de979965 PA |
6664 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6665 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6666 | reports the interrupt. Throws an error if the packet is not |
6667 | supported by the server. */ | |
de979965 | 6668 | |
6b8edb51 PA |
6669 | void |
6670 | remote_target::remote_interrupt_ns () | |
de979965 PA |
6671 | { |
6672 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6673 | char *p = rs->buf.data (); |
6674 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
6675 | |
6676 | xsnprintf (p, endp - p, "vCtrlC"); | |
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 | 6681 | getpkt (&rs->buf, 0); |
de979965 PA |
6682 | |
6683 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6684 | { | |
6685 | case PACKET_OK: | |
6686 | break; | |
6687 | case PACKET_UNKNOWN: | |
e42de8c7 | 6688 | error (_("No support for interrupting the remote target.")); |
de979965 | 6689 | case PACKET_ERROR: |
8d64371b | 6690 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 6691 | } |
de979965 PA |
6692 | } |
6693 | ||
bfedc46a | 6694 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6695 | |
f6ac5f3d PA |
6696 | void |
6697 | remote_target::stop (ptid_t ptid) | |
c906108c | 6698 | { |
7a292a7a | 6699 | if (remote_debug) |
0f71a2f6 | 6700 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6701 | |
6efcd9a8 | 6702 | if (target_is_non_stop_p ()) |
74531fed | 6703 | remote_stop_ns (ptid); |
c906108c | 6704 | else |
bfedc46a PA |
6705 | { |
6706 | /* We don't currently have a way to transparently pause the | |
6707 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6708 | remote_interrupt_as (); |
bfedc46a PA |
6709 | } |
6710 | } | |
6711 | ||
6712 | /* Implement the to_interrupt function for the remote targets. */ | |
6713 | ||
f6ac5f3d PA |
6714 | void |
6715 | remote_target::interrupt () | |
bfedc46a PA |
6716 | { |
6717 | if (remote_debug) | |
6718 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6719 | ||
e42de8c7 PA |
6720 | if (target_is_non_stop_p ()) |
6721 | remote_interrupt_ns (); | |
bfedc46a | 6722 | else |
e42de8c7 | 6723 | remote_interrupt_as (); |
c906108c SS |
6724 | } |
6725 | ||
93692b58 PA |
6726 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6727 | ||
f6ac5f3d PA |
6728 | void |
6729 | remote_target::pass_ctrlc () | |
93692b58 PA |
6730 | { |
6731 | struct remote_state *rs = get_remote_state (); | |
6732 | ||
6733 | if (remote_debug) | |
6734 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6735 | ||
6736 | /* If we're starting up, we're not fully synced yet. Quit | |
6737 | immediately. */ | |
6738 | if (rs->starting_up) | |
6739 | quit (); | |
6740 | /* If ^C has already been sent once, offer to disconnect. */ | |
6741 | else if (rs->ctrlc_pending_p) | |
6742 | interrupt_query (); | |
6743 | else | |
e671cd59 | 6744 | target_interrupt (); |
93692b58 PA |
6745 | } |
6746 | ||
c906108c SS |
6747 | /* Ask the user what to do when an interrupt is received. */ |
6748 | ||
6b8edb51 PA |
6749 | void |
6750 | remote_target::interrupt_query () | |
c906108c | 6751 | { |
abc56d60 | 6752 | struct remote_state *rs = get_remote_state (); |
c906108c | 6753 | |
abc56d60 | 6754 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6755 | { |
abc56d60 PA |
6756 | if (query (_("The target is not responding to interrupt requests.\n" |
6757 | "Stop debugging it? "))) | |
74531fed | 6758 | { |
78a095c3 | 6759 | remote_unpush_target (); |
abc56d60 | 6760 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6761 | } |
6762 | } | |
abc56d60 PA |
6763 | else |
6764 | { | |
6765 | if (query (_("Interrupted while waiting for the program.\n" | |
6766 | "Give up waiting? "))) | |
6767 | quit (); | |
6768 | } | |
c906108c SS |
6769 | } |
6770 | ||
6426a772 JM |
6771 | /* Enable/disable target terminal ownership. Most targets can use |
6772 | terminal groups to control terminal ownership. Remote targets are | |
6773 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6774 | is required. */ |
6426a772 | 6775 | |
f6ac5f3d PA |
6776 | void |
6777 | remote_target::terminal_inferior () | |
6426a772 | 6778 | { |
6426a772 JM |
6779 | /* NOTE: At this point we could also register our selves as the |
6780 | recipient of all input. Any characters typed could then be | |
23860348 | 6781 | passed on down to the target. */ |
6426a772 JM |
6782 | } |
6783 | ||
f6ac5f3d PA |
6784 | void |
6785 | remote_target::terminal_ours () | |
6426a772 | 6786 | { |
6426a772 JM |
6787 | } |
6788 | ||
176a6961 | 6789 | static void |
05be00a8 | 6790 | remote_console_output (const char *msg) |
c906108c | 6791 | { |
05be00a8 | 6792 | const char *p; |
c906108c | 6793 | |
c5aa993b | 6794 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6795 | { |
6796 | char tb[2]; | |
6797 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6798 | |
c906108c SS |
6799 | tb[0] = c; |
6800 | tb[1] = 0; | |
43ff13b4 | 6801 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6802 | } |
00db5b94 PA |
6803 | gdb_flush (gdb_stdtarg); |
6804 | } | |
74531fed | 6805 | |
32603266 | 6806 | struct stop_reply : public notif_event |
74531fed | 6807 | { |
32603266 | 6808 | ~stop_reply (); |
74531fed | 6809 | |
722247f1 | 6810 | /* The identifier of the thread about this event */ |
74531fed PA |
6811 | ptid_t ptid; |
6812 | ||
340e3c99 | 6813 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6814 | connection, represented by a remote_state object, is closed, |
6815 | all the associated stop_reply events should be released. */ | |
6816 | struct remote_state *rs; | |
6817 | ||
74531fed PA |
6818 | struct target_waitstatus ws; |
6819 | ||
5cd63fda PA |
6820 | /* The architecture associated with the expedited registers. */ |
6821 | gdbarch *arch; | |
6822 | ||
15148d6a PA |
6823 | /* Expedited registers. This makes remote debugging a bit more |
6824 | efficient for those targets that provide critical registers as | |
6825 | part of their normal status mechanism (as another roundtrip to | |
6826 | fetch them is avoided). */ | |
32603266 | 6827 | std::vector<cached_reg_t> regcache; |
74531fed | 6828 | |
f7e6eed5 PA |
6829 | enum target_stop_reason stop_reason; |
6830 | ||
74531fed PA |
6831 | CORE_ADDR watch_data_address; |
6832 | ||
dc146f7c | 6833 | int core; |
32603266 | 6834 | }; |
c906108c | 6835 | |
221e1a37 PA |
6836 | /* Return the length of the stop reply queue. */ |
6837 | ||
6b8edb51 PA |
6838 | int |
6839 | remote_target::stop_reply_queue_length () | |
221e1a37 | 6840 | { |
6b8edb51 | 6841 | remote_state *rs = get_remote_state (); |
953edf2b | 6842 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
6843 | } |
6844 | ||
6b8edb51 PA |
6845 | void |
6846 | remote_notif_stop_parse (remote_target *remote, | |
bb277751 | 6847 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6848 | struct notif_event *event) |
6849 | { | |
6b8edb51 | 6850 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
6851 | } |
6852 | ||
6853 | static void | |
6b8edb51 | 6854 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 6855 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6856 | struct notif_event *event) |
6857 | { | |
6858 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6859 | ||
6860 | /* acknowledge */ | |
6b8edb51 | 6861 | putpkt (remote, self->ack_command); |
722247f1 YQ |
6862 | |
6863 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6b8edb51 | 6864 | { |
722247f1 YQ |
6865 | /* We got an unknown stop reply. */ |
6866 | error (_("Unknown stop reply")); | |
6b8edb51 | 6867 | } |
722247f1 | 6868 | |
6b8edb51 | 6869 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
6870 | } |
6871 | ||
6872 | static int | |
6b8edb51 PA |
6873 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
6874 | struct notif_client *self) | |
722247f1 YQ |
6875 | { |
6876 | /* We can't get pending events in remote_notif_process for | |
6877 | notification stop, and we have to do this in remote_wait_ns | |
6878 | instead. If we fetch all queued events from stub, remote stub | |
6879 | may exit and we have no chance to process them back in | |
6880 | remote_wait_ns. */ | |
6b8edb51 PA |
6881 | remote_state *rs = remote->get_remote_state (); |
6882 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
6883 | return 0; |
6884 | } | |
6885 | ||
32603266 | 6886 | stop_reply::~stop_reply () |
722247f1 | 6887 | { |
32603266 TT |
6888 | for (cached_reg_t ® : regcache) |
6889 | xfree (reg.data); | |
722247f1 YQ |
6890 | } |
6891 | ||
32603266 TT |
6892 | static notif_event_up |
6893 | remote_notif_stop_alloc_reply () | |
722247f1 | 6894 | { |
32603266 | 6895 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
6896 | } |
6897 | ||
6898 | /* A client of notification Stop. */ | |
6899 | ||
6900 | struct notif_client notif_client_stop = | |
6901 | { | |
6902 | "Stop", | |
6903 | "vStopped", | |
6904 | remote_notif_stop_parse, | |
6905 | remote_notif_stop_ack, | |
6906 | remote_notif_stop_can_get_pending_events, | |
6907 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6908 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6909 | }; |
6910 | ||
85ad3aaf | 6911 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6912 | the pid of the process that owns the threads we want to check, or |
6913 | -1 if we want to check all threads. */ | |
6914 | ||
6915 | static int | |
6916 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6917 | ptid_t thread_ptid) | |
6918 | { | |
6919 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6920 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6921 | { | |
e99b03dc | 6922 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
6923 | return 1; |
6924 | } | |
6925 | ||
6926 | return 0; | |
6927 | } | |
6928 | ||
85ad3aaf PA |
6929 | /* Return the thread's pending status used to determine whether the |
6930 | thread is a fork parent stopped at a fork event. */ | |
6931 | ||
6932 | static struct target_waitstatus * | |
6933 | thread_pending_fork_status (struct thread_info *thread) | |
6934 | { | |
6935 | if (thread->suspend.waitstatus_pending_p) | |
6936 | return &thread->suspend.waitstatus; | |
6937 | else | |
6938 | return &thread->pending_follow; | |
6939 | } | |
6940 | ||
6941 | /* Determine if THREAD is a pending fork parent thread. */ | |
6942 | ||
6943 | static int | |
6944 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6945 | { | |
6946 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6947 | int pid = -1; | |
6948 | ||
6949 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6950 | } | |
6951 | ||
cbb8991c DB |
6952 | /* If CONTEXT contains any fork child threads that have not been |
6953 | reported yet, remove them from the CONTEXT list. If such a | |
6954 | thread exists it is because we are stopped at a fork catchpoint | |
6955 | and have not yet called follow_fork, which will set up the | |
6956 | host-side data structures for the new process. */ | |
6957 | ||
6b8edb51 PA |
6958 | void |
6959 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 6960 | { |
cbb8991c DB |
6961 | int pid = -1; |
6962 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
6963 | |
6964 | /* For any threads stopped at a fork event, remove the corresponding | |
6965 | fork child threads from the CONTEXT list. */ | |
08036331 | 6966 | for (thread_info *thread : all_non_exited_threads ()) |
cbb8991c | 6967 | { |
85ad3aaf | 6968 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6969 | |
6970 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 6971 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
6972 | } |
6973 | ||
6974 | /* Check for any pending fork events (not reported or processed yet) | |
6975 | in process PID and remove those fork child threads from the | |
6976 | CONTEXT list as well. */ | |
6977 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
6978 | for (auto &event : get_remote_state ()->stop_reply_queue) |
6979 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6980 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
6981 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6982 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
6983 | } |
6984 | ||
6985 | /* Check whether any event pending in the vStopped queue would prevent | |
6986 | a global or process wildcard vCont action. Clear | |
6987 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6988 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6989 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6990 | ||
6b8edb51 PA |
6991 | void |
6992 | remote_target::check_pending_events_prevent_wildcard_vcont | |
6993 | (int *may_global_wildcard) | |
85ad3aaf PA |
6994 | { |
6995 | struct notif_client *notif = ¬if_client_stop; | |
6996 | ||
6997 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
6998 | for (auto &event : get_remote_state ()->stop_reply_queue) |
6999 | { | |
7000 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7001 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7002 | continue; | |
85ad3aaf | 7003 | |
953edf2b TT |
7004 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7005 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
7006 | *may_global_wildcard = 0; | |
722247f1 | 7007 | |
953edf2b | 7008 | struct inferior *inf = find_inferior_ptid (event->ptid); |
722247f1 | 7009 | |
953edf2b TT |
7010 | /* This may be the first time we heard about this process. |
7011 | Regardless, we must not do a global wildcard resume, otherwise | |
7012 | we'd resume this process too. */ | |
7013 | *may_global_wildcard = 0; | |
7014 | if (inf != NULL) | |
7015 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
722247f1 | 7016 | } |
722247f1 YQ |
7017 | } |
7018 | ||
f48ff2a7 | 7019 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7020 | |
6b8edb51 PA |
7021 | void |
7022 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7023 | { |
f48ff2a7 YQ |
7024 | struct stop_reply *reply; |
7025 | struct remote_state *rs = get_remote_state (); | |
7026 | struct remote_notif_state *rns = rs->notif_state; | |
7027 | ||
7028 | /* This function can be notified when an inferior exists. When the | |
7029 | target is not remote, the notification state is NULL. */ | |
7030 | if (rs->remote_desc == NULL) | |
7031 | return; | |
7032 | ||
7033 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7034 | |
74531fed | 7035 | /* Discard the in-flight notification. */ |
e99b03dc | 7036 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7037 | { |
32603266 | 7038 | delete reply; |
f48ff2a7 | 7039 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 7040 | } |
c906108c | 7041 | |
74531fed PA |
7042 | /* Discard the stop replies we have already pulled with |
7043 | vStopped. */ | |
953edf2b TT |
7044 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7045 | rs->stop_reply_queue.end (), | |
7046 | [=] (const stop_reply_up &event) | |
7047 | { | |
7048 | return event->ptid.pid () == inf->pid; | |
7049 | }); | |
7050 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7051 | } |
7052 | ||
7053 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7054 | |
6b8edb51 PA |
7055 | void |
7056 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7057 | { |
6b8edb51 | 7058 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7059 | |
f48ff2a7 YQ |
7060 | /* Discard the stop replies we have already pulled with |
7061 | vStopped. */ | |
953edf2b TT |
7062 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7063 | rs->stop_reply_queue.end (), | |
7064 | [=] (const stop_reply_up &event) | |
7065 | { | |
7066 | return event->rs == rs; | |
7067 | }); | |
7068 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7069 | } |
43ff13b4 | 7070 | |
722247f1 YQ |
7071 | /* Remove the first reply in 'stop_reply_queue' which matches |
7072 | PTID. */ | |
2e9f7625 | 7073 | |
6b8edb51 PA |
7074 | struct stop_reply * |
7075 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7076 | { |
953edf2b | 7077 | remote_state *rs = get_remote_state (); |
722247f1 | 7078 | |
953edf2b TT |
7079 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7080 | rs->stop_reply_queue.end (), | |
7081 | [=] (const stop_reply_up &event) | |
7082 | { | |
7083 | return event->ptid.matches (ptid); | |
7084 | }); | |
7085 | struct stop_reply *result; | |
7086 | if (iter == rs->stop_reply_queue.end ()) | |
7087 | result = nullptr; | |
7088 | else | |
7089 | { | |
7090 | result = iter->release (); | |
7091 | rs->stop_reply_queue.erase (iter); | |
7092 | } | |
722247f1 | 7093 | |
722247f1 YQ |
7094 | if (notif_debug) |
7095 | fprintf_unfiltered (gdb_stdlog, | |
7096 | "notif: discard queued event: 'Stop' in %s\n", | |
7097 | target_pid_to_str (ptid)); | |
a744cf53 | 7098 | |
953edf2b | 7099 | return result; |
74531fed | 7100 | } |
75c99385 | 7101 | |
74531fed PA |
7102 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7103 | remove it from the queue, and return it. Returns NULL if none is | |
7104 | found. If there are still queued events left to process, tell the | |
7105 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7106 | |
6b8edb51 PA |
7107 | struct stop_reply * |
7108 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7109 | { |
953edf2b | 7110 | remote_state *rs = get_remote_state (); |
722247f1 | 7111 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7112 | |
953edf2b | 7113 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7114 | { |
6b8edb51 PA |
7115 | /* There's still at least an event left. */ |
7116 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7117 | } | |
74531fed | 7118 | |
722247f1 | 7119 | return r; |
74531fed PA |
7120 | } |
7121 | ||
7122 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7123 | know that we now have at least one queued event left to pass to the | |
7124 | core side, tell the event loop to get back to target_wait soon. */ | |
7125 | ||
6b8edb51 PA |
7126 | void |
7127 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7128 | { |
6b8edb51 | 7129 | remote_state *rs = get_remote_state (); |
953edf2b | 7130 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7131 | |
722247f1 YQ |
7132 | if (notif_debug) |
7133 | fprintf_unfiltered (gdb_stdlog, | |
7134 | "notif: push 'Stop' %s to queue %d\n", | |
7135 | target_pid_to_str (new_event->ptid), | |
953edf2b | 7136 | int (rs->stop_reply_queue.size ())); |
74531fed | 7137 | |
6b8edb51 | 7138 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7139 | } |
7140 | ||
7141 | /* Returns true if we have a stop reply for PTID. */ | |
7142 | ||
6b8edb51 PA |
7143 | int |
7144 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7145 | { |
6b8edb51 | 7146 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7147 | for (auto &event : rs->stop_reply_queue) |
7148 | if (ptid == event->ptid | |
7149 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7150 | return 1; | |
7151 | return 0; | |
74531fed PA |
7152 | } |
7153 | ||
26d56a93 SL |
7154 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7155 | starting with P and ending with PEND matches PREFIX. */ | |
7156 | ||
7157 | static int | |
7158 | strprefix (const char *p, const char *pend, const char *prefix) | |
7159 | { | |
7160 | for ( ; p < pend; p++, prefix++) | |
7161 | if (*p != *prefix) | |
7162 | return 0; | |
7163 | return *prefix == '\0'; | |
7164 | } | |
7165 | ||
74531fed PA |
7166 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7167 | result is stored in EVENT, or throws an error. */ | |
7168 | ||
6b8edb51 | 7169 | void |
bb277751 | 7170 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7171 | { |
5cd63fda | 7172 | remote_arch_state *rsa = NULL; |
74531fed | 7173 | ULONGEST addr; |
256642e8 | 7174 | const char *p; |
94585166 | 7175 | int skipregs = 0; |
74531fed PA |
7176 | |
7177 | event->ptid = null_ptid; | |
bcc75809 | 7178 | event->rs = get_remote_state (); |
74531fed PA |
7179 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7180 | event->ws.value.integer = 0; | |
f7e6eed5 | 7181 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7182 | event->regcache.clear (); |
dc146f7c | 7183 | event->core = -1; |
74531fed PA |
7184 | |
7185 | switch (buf[0]) | |
7186 | { | |
7187 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7188 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7189 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7190 | ss = signal number | |
7191 | n... = register number | |
7192 | r... = register contents | |
7193 | */ | |
7194 | ||
7195 | p = &buf[3]; /* after Txx */ | |
7196 | while (*p) | |
7197 | { | |
256642e8 | 7198 | const char *p1; |
cea39f65 | 7199 | int fieldsize; |
43ff13b4 | 7200 | |
1f10ba14 PA |
7201 | p1 = strchr (p, ':'); |
7202 | if (p1 == NULL) | |
7203 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7204 | Packet: '%s'\n"), | |
7205 | p, buf); | |
7206 | if (p == p1) | |
7207 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7208 | Packet: '%s'\n"), | |
7209 | p, buf); | |
3c3bea1c | 7210 | |
1f10ba14 PA |
7211 | /* Some "registers" are actually extended stop information. |
7212 | Note if you're adding a new entry here: GDB 7.9 and | |
7213 | earlier assume that all register "numbers" that start | |
7214 | with an hex digit are real register numbers. Make sure | |
7215 | the server only sends such a packet if it knows the | |
7216 | client understands it. */ | |
c8e38a49 | 7217 | |
26d56a93 | 7218 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7219 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7220 | else if (strprefix (p, p1, "syscall_entry")) |
7221 | { | |
7222 | ULONGEST sysno; | |
7223 | ||
7224 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7225 | p = unpack_varlen_hex (++p1, &sysno); | |
7226 | event->ws.value.syscall_number = (int) sysno; | |
7227 | } | |
7228 | else if (strprefix (p, p1, "syscall_return")) | |
7229 | { | |
7230 | ULONGEST sysno; | |
7231 | ||
7232 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7233 | p = unpack_varlen_hex (++p1, &sysno); | |
7234 | event->ws.value.syscall_number = (int) sysno; | |
7235 | } | |
26d56a93 SL |
7236 | else if (strprefix (p, p1, "watch") |
7237 | || strprefix (p, p1, "rwatch") | |
7238 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7239 | { |
f7e6eed5 | 7240 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7241 | p = unpack_varlen_hex (++p1, &addr); |
7242 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7243 | } |
26d56a93 | 7244 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7245 | { |
7246 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7247 | ||
7248 | /* Make sure the stub doesn't forget to indicate support | |
7249 | with qSupported. */ | |
7250 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7251 | error (_("Unexpected swbreak stop reason")); | |
7252 | ||
7253 | /* The value part is documented as "must be empty", | |
7254 | though we ignore it, in case we ever decide to make | |
7255 | use of it in a backward compatible way. */ | |
8424cc97 | 7256 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7257 | } |
26d56a93 | 7258 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7259 | { |
7260 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7261 | ||
7262 | /* Make sure the stub doesn't forget to indicate support | |
7263 | with qSupported. */ | |
7264 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7265 | error (_("Unexpected hwbreak stop reason")); | |
7266 | ||
7267 | /* See above. */ | |
8424cc97 | 7268 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7269 | } |
26d56a93 | 7270 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7271 | { |
1f10ba14 | 7272 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7273 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7274 | } |
26d56a93 | 7275 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7276 | { |
7277 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7278 | /* p1 will indicate "begin" or "end", but it makes | |
7279 | no difference for now, so ignore it. */ | |
8424cc97 | 7280 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7281 | } |
26d56a93 | 7282 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7283 | { |
7284 | ULONGEST c; | |
a744cf53 | 7285 | |
1f10ba14 PA |
7286 | p = unpack_varlen_hex (++p1, &c); |
7287 | event->core = c; | |
cea39f65 | 7288 | } |
26d56a93 | 7289 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7290 | { |
7291 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7292 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7293 | } | |
26d56a93 | 7294 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7295 | { |
7296 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7297 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7298 | } | |
26d56a93 | 7299 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7300 | { |
7301 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7302 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7303 | } |
6ab24463 | 7304 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7305 | { |
7306 | ULONGEST ignored; | |
94585166 DB |
7307 | int pathlen; |
7308 | ||
7309 | /* Determine the length of the execd pathname. */ | |
7310 | p = unpack_varlen_hex (++p1, &ignored); | |
7311 | pathlen = (p - p1) / 2; | |
7312 | ||
7313 | /* Save the pathname for event reporting and for | |
7314 | the next run command. */ | |
b671c7fb TS |
7315 | char *pathname = (char *) xmalloc (pathlen + 1); |
7316 | struct cleanup *old_chain = make_cleanup (xfree, pathname); | |
94585166 DB |
7317 | hex2bin (p1, (gdb_byte *) pathname, pathlen); |
7318 | pathname[pathlen] = '\0'; | |
b671c7fb | 7319 | discard_cleanups (old_chain); |
94585166 DB |
7320 | |
7321 | /* This is freed during event handling. */ | |
b671c7fb | 7322 | event->ws.value.execd_pathname = pathname; |
94585166 DB |
7323 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7324 | ||
7325 | /* Skip the registers included in this packet, since | |
7326 | they may be for an architecture different from the | |
7327 | one used by the original program. */ | |
7328 | skipregs = 1; | |
7329 | } | |
65706a29 PA |
7330 | else if (strprefix (p, p1, "create")) |
7331 | { | |
7332 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7333 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7334 | } |
cea39f65 MS |
7335 | else |
7336 | { | |
1f10ba14 | 7337 | ULONGEST pnum; |
256642e8 | 7338 | const char *p_temp; |
1f10ba14 | 7339 | |
94585166 DB |
7340 | if (skipregs) |
7341 | { | |
8424cc97 | 7342 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7343 | p++; |
7344 | continue; | |
7345 | } | |
7346 | ||
1f10ba14 PA |
7347 | /* Maybe a real ``P'' register number. */ |
7348 | p_temp = unpack_varlen_hex (p, &pnum); | |
7349 | /* If the first invalid character is the colon, we got a | |
7350 | register number. Otherwise, it's an unknown stop | |
7351 | reason. */ | |
7352 | if (p_temp == p1) | |
7353 | { | |
5cd63fda PA |
7354 | /* If we haven't parsed the event's thread yet, find |
7355 | it now, in order to find the architecture of the | |
7356 | reported expedited registers. */ | |
7357 | if (event->ptid == null_ptid) | |
7358 | { | |
7359 | const char *thr = strstr (p1 + 1, ";thread:"); | |
7360 | if (thr != NULL) | |
7361 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7362 | NULL); | |
7363 | else | |
3cada740 PA |
7364 | { |
7365 | /* Either the current thread hasn't changed, | |
7366 | or the inferior is not multi-threaded. | |
7367 | The event must be for the thread we last | |
7368 | set as (or learned as being) current. */ | |
7369 | event->ptid = event->rs->general_thread; | |
7370 | } | |
5cd63fda PA |
7371 | } |
7372 | ||
7373 | if (rsa == NULL) | |
7374 | { | |
7375 | inferior *inf = (event->ptid == null_ptid | |
7376 | ? NULL | |
7377 | : find_inferior_ptid (event->ptid)); | |
7378 | /* If this is the first time we learn anything | |
7379 | about this process, skip the registers | |
7380 | included in this packet, since we don't yet | |
7381 | know which architecture to use to parse them. | |
7382 | We'll determine the architecture later when | |
7383 | we process the stop reply and retrieve the | |
7384 | target description, via | |
7385 | remote_notice_new_inferior -> | |
7386 | post_create_inferior. */ | |
7387 | if (inf == NULL) | |
7388 | { | |
7389 | p = strchrnul (p1 + 1, ';'); | |
7390 | p++; | |
7391 | continue; | |
7392 | } | |
7393 | ||
7394 | event->arch = inf->gdbarch; | |
9d6eea31 | 7395 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7396 | } |
7397 | ||
7398 | packet_reg *reg | |
7399 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7400 | cached_reg_t cached_reg; |
43ff13b4 | 7401 | |
1f10ba14 PA |
7402 | if (reg == NULL) |
7403 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7404 | Packet: '%s'\n"), |
1f10ba14 | 7405 | hex_string (pnum), p, buf); |
c8e38a49 | 7406 | |
1f10ba14 | 7407 | cached_reg.num = reg->regnum; |
d1dff226 | 7408 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7409 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7410 | |
1f10ba14 PA |
7411 | p = p1 + 1; |
7412 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7413 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7414 | p += 2 * fieldsize; |
5cd63fda | 7415 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7416 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7417 | |
32603266 | 7418 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7419 | } |
7420 | else | |
7421 | { | |
7422 | /* Not a number. Silently skip unknown optional | |
7423 | info. */ | |
8424cc97 | 7424 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7425 | } |
cea39f65 | 7426 | } |
c8e38a49 | 7427 | |
cea39f65 MS |
7428 | if (*p != ';') |
7429 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7430 | buf, p); | |
7431 | ++p; | |
7432 | } | |
5b5596ff PA |
7433 | |
7434 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7435 | break; | |
7436 | ||
c8e38a49 PA |
7437 | /* fall through */ |
7438 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7439 | { |
7440 | int sig; | |
7441 | ||
7442 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7443 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7444 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7445 | event->ws.value.sig = (enum gdb_signal) sig; | |
7446 | else | |
7447 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7448 | } | |
c8e38a49 | 7449 | break; |
65706a29 PA |
7450 | case 'w': /* Thread exited. */ |
7451 | { | |
65706a29 PA |
7452 | ULONGEST value; |
7453 | ||
7454 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7455 | p = unpack_varlen_hex (&buf[1], &value); | |
7456 | event->ws.value.integer = value; | |
7457 | if (*p != ';') | |
7458 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7459 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7460 | break; |
7461 | } | |
c8e38a49 PA |
7462 | case 'W': /* Target exited. */ |
7463 | case 'X': | |
7464 | { | |
c8e38a49 PA |
7465 | int pid; |
7466 | ULONGEST value; | |
82f73884 | 7467 | |
c8e38a49 PA |
7468 | /* GDB used to accept only 2 hex chars here. Stubs should |
7469 | only send more if they detect GDB supports multi-process | |
7470 | support. */ | |
7471 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7472 | |
c8e38a49 PA |
7473 | if (buf[0] == 'W') |
7474 | { | |
7475 | /* The remote process exited. */ | |
74531fed PA |
7476 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7477 | event->ws.value.integer = value; | |
c8e38a49 PA |
7478 | } |
7479 | else | |
7480 | { | |
7481 | /* The remote process exited with a signal. */ | |
74531fed | 7482 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7483 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7484 | event->ws.value.sig = (enum gdb_signal) value; | |
7485 | else | |
7486 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7487 | } |
82f73884 | 7488 | |
c8e38a49 | 7489 | /* If no process is specified, assume inferior_ptid. */ |
e99b03dc | 7490 | pid = inferior_ptid.pid (); |
c8e38a49 PA |
7491 | if (*p == '\0') |
7492 | ; | |
7493 | else if (*p == ';') | |
7494 | { | |
7495 | p++; | |
7496 | ||
0b24eb2d | 7497 | if (*p == '\0') |
82f73884 | 7498 | ; |
61012eef | 7499 | else if (startswith (p, "process:")) |
82f73884 | 7500 | { |
c8e38a49 | 7501 | ULONGEST upid; |
a744cf53 | 7502 | |
c8e38a49 PA |
7503 | p += sizeof ("process:") - 1; |
7504 | unpack_varlen_hex (p, &upid); | |
7505 | pid = upid; | |
82f73884 PA |
7506 | } |
7507 | else | |
7508 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7509 | } |
c8e38a49 PA |
7510 | else |
7511 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7512 | event->ptid = ptid_t (pid); |
74531fed PA |
7513 | } |
7514 | break; | |
f2faf941 PA |
7515 | case 'N': |
7516 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7517 | event->ptid = minus_one_ptid; | |
7518 | break; | |
74531fed PA |
7519 | } |
7520 | ||
d7e15655 | 7521 | if (target_is_non_stop_p () && event->ptid == null_ptid) |
74531fed PA |
7522 | error (_("No process or thread specified in stop reply: %s"), buf); |
7523 | } | |
7524 | ||
722247f1 YQ |
7525 | /* When the stub wants to tell GDB about a new notification reply, it |
7526 | sends a notification (%Stop, for example). Those can come it at | |
7527 | any time, hence, we have to make sure that any pending | |
7528 | putpkt/getpkt sequence we're making is finished, before querying | |
7529 | the stub for more events with the corresponding ack command | |
7530 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7531 | immediately upon receiving the notification, something like this | |
7532 | could happen: | |
74531fed PA |
7533 | |
7534 | 1.1) --> Hg 1 | |
7535 | 1.2) <-- OK | |
7536 | 1.3) --> g | |
7537 | 1.4) <-- %Stop | |
7538 | 1.5) --> vStopped | |
7539 | 1.6) <-- (registers reply to step #1.3) | |
7540 | ||
7541 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7542 | query. | |
7543 | ||
796cb314 | 7544 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7545 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7546 | doing whatever we were doing: | |
7547 | ||
7548 | 2.1) --> Hg 1 | |
7549 | 2.2) <-- OK | |
7550 | 2.3) --> g | |
7551 | 2.4) <-- %Stop | |
7552 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7553 | 2.5) <-- (registers reply to step #2.3) | |
7554 | ||
7555 | Eventualy after step #2.5, we return to the event loop, which | |
7556 | notices there's an event on the | |
7557 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7558 | associated callback --- the function below. At this point, we're | |
7559 | always safe to start a vStopped sequence. : | |
7560 | ||
7561 | 2.6) --> vStopped | |
7562 | 2.7) <-- T05 thread:2 | |
7563 | 2.8) --> vStopped | |
7564 | 2.9) --> OK | |
7565 | */ | |
7566 | ||
722247f1 | 7567 | void |
6b8edb51 | 7568 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7569 | { |
7570 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7571 | |
f48ff2a7 | 7572 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7573 | { |
722247f1 YQ |
7574 | if (notif_debug) |
7575 | fprintf_unfiltered (gdb_stdlog, | |
7576 | "notif: process: '%s' ack pending event\n", | |
7577 | nc->name); | |
74531fed | 7578 | |
722247f1 | 7579 | /* acknowledge */ |
8d64371b TT |
7580 | nc->ack (this, nc, rs->buf.data (), |
7581 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7582 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7583 | |
7584 | while (1) | |
7585 | { | |
8d64371b TT |
7586 | getpkt (&rs->buf, 0); |
7587 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7588 | break; |
7589 | else | |
8d64371b | 7590 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7591 | } |
7592 | } | |
722247f1 YQ |
7593 | else |
7594 | { | |
7595 | if (notif_debug) | |
7596 | fprintf_unfiltered (gdb_stdlog, | |
7597 | "notif: process: '%s' no pending reply\n", | |
7598 | nc->name); | |
7599 | } | |
74531fed PA |
7600 | } |
7601 | ||
6b8edb51 PA |
7602 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7603 | avoid having to export the whole remote_target class. */ | |
7604 | ||
7605 | void | |
7606 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7607 | { | |
7608 | remote->remote_notif_get_pending_events (nc); | |
7609 | } | |
7610 | ||
74531fed PA |
7611 | /* Called when it is decided that STOP_REPLY holds the info of the |
7612 | event that is to be returned to the core. This function always | |
7613 | destroys STOP_REPLY. */ | |
7614 | ||
6b8edb51 PA |
7615 | ptid_t |
7616 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
7617 | struct target_waitstatus *status) | |
74531fed PA |
7618 | { |
7619 | ptid_t ptid; | |
7620 | ||
7621 | *status = stop_reply->ws; | |
7622 | ptid = stop_reply->ptid; | |
7623 | ||
7624 | /* If no thread/process was reported by the stub, assume the current | |
7625 | inferior. */ | |
d7e15655 | 7626 | if (ptid == null_ptid) |
74531fed PA |
7627 | ptid = inferior_ptid; |
7628 | ||
5f3563ea | 7629 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7630 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7631 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7632 | { |
5f3563ea | 7633 | /* Expedited registers. */ |
32603266 | 7634 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 7635 | { |
217f1f79 | 7636 | struct regcache *regcache |
5cd63fda | 7637 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea | 7638 | |
32603266 TT |
7639 | for (cached_reg_t ® : stop_reply->regcache) |
7640 | { | |
7641 | regcache->raw_supply (reg.num, reg.data); | |
7642 | xfree (reg.data); | |
7643 | } | |
d1dff226 | 7644 | |
32603266 | 7645 | stop_reply->regcache.clear (); |
5f3563ea | 7646 | } |
74531fed | 7647 | |
1941c569 | 7648 | remote_notice_new_inferior (ptid, 0); |
7aabaf9d | 7649 | remote_thread_info *remote_thr = get_remote_thread_info (ptid); |
799a2abe PA |
7650 | remote_thr->core = stop_reply->core; |
7651 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7652 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7653 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7654 | } |
7655 | ||
32603266 | 7656 | delete stop_reply; |
74531fed PA |
7657 | return ptid; |
7658 | } | |
7659 | ||
7660 | /* The non-stop mode version of target_wait. */ | |
7661 | ||
6b8edb51 PA |
7662 | ptid_t |
7663 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) | |
74531fed PA |
7664 | { |
7665 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7666 | struct stop_reply *stop_reply; |
7667 | int ret; | |
fee9eda9 | 7668 | int is_notif = 0; |
74531fed PA |
7669 | |
7670 | /* If in non-stop mode, get out of getpkt even if a | |
7671 | notification is received. */ | |
7672 | ||
8d64371b | 7673 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
7674 | while (1) |
7675 | { | |
fee9eda9 | 7676 | if (ret != -1 && !is_notif) |
74531fed PA |
7677 | switch (rs->buf[0]) |
7678 | { | |
7679 | case 'E': /* Error of some sort. */ | |
7680 | /* We're out of sync with the target now. Did it continue | |
7681 | or not? We can't tell which thread it was in non-stop, | |
7682 | so just ignore this. */ | |
8d64371b | 7683 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
7684 | break; |
7685 | case 'O': /* Console output. */ | |
8d64371b | 7686 | remote_console_output (&rs->buf[1]); |
74531fed PA |
7687 | break; |
7688 | default: | |
8d64371b | 7689 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
7690 | break; |
7691 | } | |
7692 | ||
7693 | /* Acknowledge a pending stop reply that may have arrived in the | |
7694 | mean time. */ | |
f48ff2a7 | 7695 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7696 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7697 | |
7698 | /* If indeed we noticed a stop reply, we're done. */ | |
7699 | stop_reply = queued_stop_reply (ptid); | |
7700 | if (stop_reply != NULL) | |
7701 | return process_stop_reply (stop_reply, status); | |
7702 | ||
47608cb1 | 7703 | /* Still no event. If we're just polling for an event, then |
74531fed | 7704 | return to the event loop. */ |
47608cb1 | 7705 | if (options & TARGET_WNOHANG) |
74531fed PA |
7706 | { |
7707 | status->kind = TARGET_WAITKIND_IGNORE; | |
7708 | return minus_one_ptid; | |
7709 | } | |
7710 | ||
47608cb1 | 7711 | /* Otherwise do a blocking wait. */ |
8d64371b | 7712 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
7713 | } |
7714 | } | |
7715 | ||
7716 | /* Wait until the remote machine stops, then return, storing status in | |
7717 | STATUS just as `wait' would. */ | |
7718 | ||
6b8edb51 PA |
7719 | ptid_t |
7720 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, int options) | |
74531fed PA |
7721 | { |
7722 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7723 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7724 | char *buf; |
74531fed PA |
7725 | struct stop_reply *stop_reply; |
7726 | ||
47608cb1 PA |
7727 | again: |
7728 | ||
74531fed PA |
7729 | status->kind = TARGET_WAITKIND_IGNORE; |
7730 | status->value.integer = 0; | |
7731 | ||
7732 | stop_reply = queued_stop_reply (ptid); | |
7733 | if (stop_reply != NULL) | |
7734 | return process_stop_reply (stop_reply, status); | |
7735 | ||
7736 | if (rs->cached_wait_status) | |
7737 | /* Use the cached wait status, but only once. */ | |
7738 | rs->cached_wait_status = 0; | |
7739 | else | |
7740 | { | |
7741 | int ret; | |
722247f1 | 7742 | int is_notif; |
567420d1 | 7743 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 7744 | && rs->wait_forever_enabled_p); |
567420d1 PA |
7745 | |
7746 | if (!rs->waiting_for_stop_reply) | |
7747 | { | |
7748 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7749 | return minus_one_ptid; | |
7750 | } | |
74531fed | 7751 | |
74531fed PA |
7752 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7753 | _never_ wait for ever -> test on target_is_async_p(). | |
7754 | However, before we do that we need to ensure that the caller | |
7755 | knows how to take the target into/out of async mode. */ | |
8d64371b | 7756 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
7757 | |
7758 | /* GDB gets a notification. Return to core as this event is | |
7759 | not interesting. */ | |
7760 | if (ret != -1 && is_notif) | |
7761 | return minus_one_ptid; | |
567420d1 PA |
7762 | |
7763 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7764 | return minus_one_ptid; | |
74531fed PA |
7765 | } |
7766 | ||
8d64371b | 7767 | buf = rs->buf.data (); |
74531fed | 7768 | |
3a29589a DJ |
7769 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7770 | an 'F' or 'O' packet. */ | |
7771 | if (buf[0] != 'F' && buf[0] != 'O') | |
7772 | rs->ctrlc_pending_p = 0; | |
7773 | ||
74531fed PA |
7774 | switch (buf[0]) |
7775 | { | |
7776 | case 'E': /* Error of some sort. */ | |
7777 | /* We're out of sync with the target now. Did it continue or | |
7778 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7779 | rs->waiting_for_stop_reply = 0; |
7780 | ||
74531fed PA |
7781 | warning (_("Remote failure reply: %s"), buf); |
7782 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7783 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7784 | break; |
7785 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7786 | /* GDB may access the inferior memory while handling the File-I/O |
7787 | request, but we don't want GDB accessing memory while waiting | |
7788 | for a stop reply. See the comments in putpkt_binary. Set | |
7789 | waiting_for_stop_reply to 0 temporarily. */ | |
7790 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 7791 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 7792 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
7793 | /* GDB handled the File-I/O request, and the target is running |
7794 | again. Keep waiting for events. */ | |
7795 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7796 | break; |
f2faf941 | 7797 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7798 | { |
29090fb6 LM |
7799 | /* There is a stop reply to handle. */ |
7800 | rs->waiting_for_stop_reply = 0; | |
7801 | ||
7802 | stop_reply | |
6b8edb51 PA |
7803 | = (struct stop_reply *) remote_notif_parse (this, |
7804 | ¬if_client_stop, | |
8d64371b | 7805 | rs->buf.data ()); |
74531fed | 7806 | |
74531fed | 7807 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7808 | break; |
7809 | } | |
7810 | case 'O': /* Console output. */ | |
7811 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7812 | break; |
7813 | case '\0': | |
b73be471 | 7814 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7815 | { |
7816 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7817 | remote system doesn't support it. */ | |
223ffa71 | 7818 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7819 | printf_filtered |
7820 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7821 | gdb_signal_to_name (rs->last_sent_signal)); |
7822 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7823 | target_terminal::inferior (); |
c8e38a49 | 7824 | |
f5c4fcd9 TT |
7825 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7826 | putpkt (buf); | |
c8e38a49 | 7827 | break; |
43ff13b4 | 7828 | } |
86a73007 | 7829 | /* fallthrough */ |
c8e38a49 PA |
7830 | default: |
7831 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7832 | break; |
43ff13b4 | 7833 | } |
c8e38a49 | 7834 | |
f2faf941 PA |
7835 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7836 | return minus_one_ptid; | |
7837 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7838 | { |
7839 | /* Nothing interesting happened. If we're doing a non-blocking | |
7840 | poll, we're done. Otherwise, go back to waiting. */ | |
7841 | if (options & TARGET_WNOHANG) | |
7842 | return minus_one_ptid; | |
7843 | else | |
7844 | goto again; | |
7845 | } | |
74531fed PA |
7846 | else if (status->kind != TARGET_WAITKIND_EXITED |
7847 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 7848 | { |
d7e15655 | 7849 | if (event_ptid != null_ptid) |
47f8a51d | 7850 | record_currthread (rs, event_ptid); |
82f73884 PA |
7851 | else |
7852 | event_ptid = inferior_ptid; | |
43ff13b4 | 7853 | } |
74531fed PA |
7854 | else |
7855 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7856 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7857 | |
82f73884 | 7858 | return event_ptid; |
43ff13b4 JM |
7859 | } |
7860 | ||
74531fed PA |
7861 | /* Wait until the remote machine stops, then return, storing status in |
7862 | STATUS just as `wait' would. */ | |
7863 | ||
f6ac5f3d PA |
7864 | ptid_t |
7865 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, int options) | |
c8e38a49 PA |
7866 | { |
7867 | ptid_t event_ptid; | |
7868 | ||
6efcd9a8 | 7869 | if (target_is_non_stop_p ()) |
6b8edb51 | 7870 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 7871 | else |
6b8edb51 | 7872 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 7873 | |
d9d41e78 | 7874 | if (target_is_async_p ()) |
c8e38a49 | 7875 | { |
6b8edb51 PA |
7876 | remote_state *rs = get_remote_state (); |
7877 | ||
74531fed PA |
7878 | /* If there are are events left in the queue tell the event loop |
7879 | to return here. */ | |
953edf2b | 7880 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7881 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 7882 | } |
c8e38a49 PA |
7883 | |
7884 | return event_ptid; | |
7885 | } | |
7886 | ||
74ca34ce | 7887 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7888 | |
6b8edb51 PA |
7889 | int |
7890 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
7891 | packet_reg *reg) | |
b96ec7ac | 7892 | { |
ac7936df | 7893 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7894 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7895 | char *buf, *p; |
9890e433 | 7896 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7897 | int i; |
7898 | ||
4082afcc | 7899 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7900 | return 0; |
7901 | ||
7902 | if (reg->pnum == -1) | |
7903 | return 0; | |
7904 | ||
8d64371b | 7905 | p = rs->buf.data (); |
fcad0fa4 | 7906 | *p++ = 'p'; |
74ca34ce | 7907 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7908 | *p++ = '\0'; |
1f4437a4 | 7909 | putpkt (rs->buf); |
8d64371b | 7910 | getpkt (&rs->buf, 0); |
3f9a994c | 7911 | |
8d64371b | 7912 | buf = rs->buf.data (); |
2e9f7625 | 7913 | |
8d64371b | 7914 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
7915 | { |
7916 | case PACKET_OK: | |
7917 | break; | |
7918 | case PACKET_UNKNOWN: | |
7919 | return 0; | |
7920 | case PACKET_ERROR: | |
27a9c0bf | 7921 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7922 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7923 | reg->regnum), |
7924 | buf); | |
74ca34ce | 7925 | } |
3f9a994c JB |
7926 | |
7927 | /* If this register is unfetchable, tell the regcache. */ | |
7928 | if (buf[0] == 'x') | |
8480adf2 | 7929 | { |
73e1c03f | 7930 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 7931 | return 1; |
b96ec7ac | 7932 | } |
b96ec7ac | 7933 | |
3f9a994c JB |
7934 | /* Otherwise, parse and supply the value. */ |
7935 | p = buf; | |
7936 | i = 0; | |
7937 | while (p[0] != 0) | |
7938 | { | |
7939 | if (p[1] == 0) | |
74ca34ce | 7940 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7941 | |
7942 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7943 | p += 2; | |
7944 | } | |
73e1c03f | 7945 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 7946 | return 1; |
b96ec7ac AC |
7947 | } |
7948 | ||
74ca34ce DJ |
7949 | /* Fetch the registers included in the target's 'g' packet. */ |
7950 | ||
6b8edb51 PA |
7951 | int |
7952 | remote_target::send_g_packet () | |
c906108c | 7953 | { |
d01949b6 | 7954 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7955 | int buf_len; |
c906108c | 7956 | |
8d64371b | 7957 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 7958 | putpkt (rs->buf); |
8d64371b | 7959 | getpkt (&rs->buf, 0); |
b75abf5b AK |
7960 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
7961 | error (_("Could not read registers; remote failure reply '%s'"), | |
8d64371b | 7962 | rs->buf.data ()); |
c906108c | 7963 | |
29709017 DJ |
7964 | /* We can get out of synch in various cases. If the first character |
7965 | in the buffer is not a hex character, assume that has happened | |
7966 | and try to fetch another packet to read. */ | |
7967 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7968 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7969 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7970 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7971 | { | |
7972 | if (remote_debug) | |
7973 | fprintf_unfiltered (gdb_stdlog, | |
7974 | "Bad register packet; fetching a new packet\n"); | |
8d64371b | 7975 | getpkt (&rs->buf, 0); |
29709017 DJ |
7976 | } |
7977 | ||
8d64371b | 7978 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
7979 | |
7980 | /* Sanity check the received packet. */ | |
7981 | if (buf_len % 2 != 0) | |
8d64371b | 7982 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
7983 | |
7984 | return buf_len / 2; | |
7985 | } | |
7986 | ||
6b8edb51 PA |
7987 | void |
7988 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 7989 | { |
ac7936df | 7990 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 7991 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 7992 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
7993 | int i, buf_len; |
7994 | char *p; | |
7995 | char *regs; | |
7996 | ||
8d64371b | 7997 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
7998 | |
7999 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8000 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8001 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8002 | "bytes): %s"), |
8003 | rsa->sizeof_g_packet, buf_len / 2, | |
8004 | rs->buf.data ()); | |
74ca34ce DJ |
8005 | |
8006 | /* Save the size of the packet sent to us by the target. It is used | |
8007 | as a heuristic when determining the max size of packets that the | |
8008 | target can safely receive. */ | |
8009 | if (rsa->actual_register_packet_size == 0) | |
8010 | rsa->actual_register_packet_size = buf_len; | |
8011 | ||
8012 | /* If this is smaller than we guessed the 'g' packet would be, | |
8013 | update our records. A 'g' reply that doesn't include a register's | |
8014 | value implies either that the register is not available, or that | |
8015 | the 'p' packet must be used. */ | |
8016 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8017 | { |
9dc193c3 | 8018 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8019 | |
4a22f64d | 8020 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8021 | { |
9dc193c3 LF |
8022 | long offset = rsa->regs[i].offset; |
8023 | long reg_size = register_size (gdbarch, i); | |
8024 | ||
74ca34ce DJ |
8025 | if (rsa->regs[i].pnum == -1) |
8026 | continue; | |
8027 | ||
9dc193c3 | 8028 | if (offset >= sizeof_g_packet) |
74ca34ce | 8029 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8030 | else if (offset + reg_size > sizeof_g_packet) |
8031 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8032 | else |
74ca34ce | 8033 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8034 | } |
9dc193c3 LF |
8035 | |
8036 | /* Looks valid enough, we can assume this is the correct length | |
8037 | for a 'g' packet. It's important not to adjust | |
8038 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8039 | this "if" won't be run the next time the method is called | |
8040 | with a packet of the same size and one of the internal errors | |
8041 | below will trigger instead. */ | |
8042 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 8043 | } |
b323314b | 8044 | |
224c3ddb | 8045 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8046 | |
8047 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8048 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8049 | |
c906108c SS |
8050 | /* Reply describes registers byte by byte, each byte encoded as two |
8051 | hex characters. Suck them all up, then supply them to the | |
8052 | register cacheing/storage mechanism. */ | |
8053 | ||
8d64371b | 8054 | p = rs->buf.data (); |
ea9c271d | 8055 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8056 | { |
74ca34ce DJ |
8057 | if (p[0] == 0 || p[1] == 0) |
8058 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8059 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8060 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8061 | |
c906108c | 8062 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8063 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8064 | else |
8065 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8066 | p += 2; | |
8067 | } | |
8068 | ||
a744cf53 MS |
8069 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8070 | { | |
8071 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8072 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8073 | |
8074 | if (r->in_g_packet) | |
8075 | { | |
8d64371b | 8076 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8077 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8078 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8079 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8080 | else if (rs->buf[r->offset * 2] == 'x') |
8081 | { | |
8d64371b | 8082 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8083 | /* The register isn't available, mark it as such (at |
8084 | the same time setting the value to zero). */ | |
73e1c03f | 8085 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8086 | } |
8087 | else | |
73e1c03f | 8088 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8089 | } |
8090 | } | |
c906108c SS |
8091 | } |
8092 | ||
6b8edb51 PA |
8093 | void |
8094 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8095 | { |
8096 | send_g_packet (); | |
56be3814 | 8097 | process_g_packet (regcache); |
29709017 DJ |
8098 | } |
8099 | ||
e6e4e701 PA |
8100 | /* Make the remote selected traceframe match GDB's selected |
8101 | traceframe. */ | |
8102 | ||
6b8edb51 PA |
8103 | void |
8104 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8105 | { |
8106 | int newnum; | |
262e1174 | 8107 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8108 | |
262e1174 | 8109 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8110 | return; |
8111 | ||
8112 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8113 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8114 | |
8115 | newnum = target_trace_find (tfind_number, | |
8116 | get_traceframe_number (), 0, 0, NULL); | |
8117 | ||
8118 | /* Should not happen. If it does, all bets are off. */ | |
8119 | if (newnum != get_traceframe_number ()) | |
8120 | warning (_("could not set remote traceframe")); | |
8121 | } | |
8122 | ||
f6ac5f3d PA |
8123 | void |
8124 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8125 | { |
ac7936df | 8126 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8127 | struct remote_state *rs = get_remote_state (); |
8128 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8129 | int i; |
8130 | ||
e6e4e701 | 8131 | set_remote_traceframe (); |
222312d3 | 8132 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8133 | |
8134 | if (regnum >= 0) | |
8135 | { | |
5cd63fda | 8136 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8137 | |
74ca34ce DJ |
8138 | gdb_assert (reg != NULL); |
8139 | ||
8140 | /* If this register might be in the 'g' packet, try that first - | |
8141 | we are likely to read more than one register. If this is the | |
8142 | first 'g' packet, we might be overly optimistic about its | |
8143 | contents, so fall back to 'p'. */ | |
8144 | if (reg->in_g_packet) | |
8145 | { | |
56be3814 | 8146 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8147 | if (reg->in_g_packet) |
8148 | return; | |
8149 | } | |
8150 | ||
56be3814 | 8151 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8152 | return; |
8153 | ||
8154 | /* This register is not available. */ | |
73e1c03f | 8155 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8156 | |
8157 | return; | |
8158 | } | |
8159 | ||
56be3814 | 8160 | fetch_registers_using_g (regcache); |
74ca34ce | 8161 | |
5cd63fda | 8162 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8163 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8164 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8165 | { |
8166 | /* This register is not available. */ | |
73e1c03f | 8167 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8168 | } |
8169 | } | |
8170 | ||
c906108c SS |
8171 | /* Prepare to store registers. Since we may send them all (using a |
8172 | 'G' request), we have to read out the ones we don't want to change | |
8173 | first. */ | |
8174 | ||
f6ac5f3d PA |
8175 | void |
8176 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8177 | { |
9d6eea31 PA |
8178 | struct remote_state *rs = get_remote_state (); |
8179 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8180 | int i; |
cf0e1e0d | 8181 | |
c906108c | 8182 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8183 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8184 | { |
8185 | case PACKET_DISABLE: | |
8186 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8187 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8188 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8189 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8190 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8191 | break; |
8192 | case PACKET_ENABLE: | |
8193 | break; | |
8194 | } | |
8195 | } | |
8196 | ||
ad10f812 | 8197 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8198 | packet was not recognized. */ |
5a2468f5 | 8199 | |
6b8edb51 PA |
8200 | int |
8201 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8202 | packet_reg *reg) | |
5a2468f5 | 8203 | { |
ac7936df | 8204 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8205 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8206 | /* Try storing a single register. */ |
8d64371b | 8207 | char *buf = rs->buf.data (); |
9890e433 | 8208 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8209 | char *p; |
5a2468f5 | 8210 | |
4082afcc | 8211 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8212 | return 0; |
8213 | ||
8214 | if (reg->pnum == -1) | |
8215 | return 0; | |
8216 | ||
ea9c271d | 8217 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8218 | p = buf + strlen (buf); |
34a79281 | 8219 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8220 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8221 | putpkt (rs->buf); |
8d64371b | 8222 | getpkt (&rs->buf, 0); |
5a2468f5 | 8223 | |
74ca34ce DJ |
8224 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8225 | { | |
8226 | case PACKET_OK: | |
8227 | return 1; | |
8228 | case PACKET_ERROR: | |
27a9c0bf | 8229 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8230 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8231 | case PACKET_UNKNOWN: |
8232 | return 0; | |
8233 | default: | |
8234 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8235 | } | |
c906108c SS |
8236 | } |
8237 | ||
23860348 MS |
8238 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8239 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8240 | |
6b8edb51 PA |
8241 | void |
8242 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8243 | { |
d01949b6 | 8244 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8245 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8246 | gdb_byte *regs; |
c906108c SS |
8247 | char *p; |
8248 | ||
193cb69f AC |
8249 | /* Extract all the registers in the regcache copying them into a |
8250 | local buffer. */ | |
8251 | { | |
b323314b | 8252 | int i; |
a744cf53 | 8253 | |
224c3ddb | 8254 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8255 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8256 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8257 | { |
ea9c271d | 8258 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8259 | |
b323314b | 8260 | if (r->in_g_packet) |
34a79281 | 8261 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8262 | } |
8263 | } | |
c906108c SS |
8264 | |
8265 | /* Command describes registers byte by byte, | |
8266 | each byte encoded as two hex characters. */ | |
8d64371b | 8267 | p = rs->buf.data (); |
193cb69f | 8268 | *p++ = 'G'; |
74ca34ce | 8269 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8270 | putpkt (rs->buf); |
8d64371b | 8271 | getpkt (&rs->buf, 0); |
1f4437a4 | 8272 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8273 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8274 | rs->buf.data ()); |
c906108c | 8275 | } |
74ca34ce DJ |
8276 | |
8277 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8278 | of the register cache buffer. FIXME: ignores errors. */ | |
8279 | ||
f6ac5f3d PA |
8280 | void |
8281 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8282 | { |
5cd63fda | 8283 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8284 | struct remote_state *rs = get_remote_state (); |
8285 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8286 | int i; |
8287 | ||
e6e4e701 | 8288 | set_remote_traceframe (); |
222312d3 | 8289 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8290 | |
8291 | if (regnum >= 0) | |
8292 | { | |
5cd63fda | 8293 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8294 | |
74ca34ce DJ |
8295 | gdb_assert (reg != NULL); |
8296 | ||
8297 | /* Always prefer to store registers using the 'P' packet if | |
8298 | possible; we often change only a small number of registers. | |
8299 | Sometimes we change a larger number; we'd need help from a | |
8300 | higher layer to know to use 'G'. */ | |
56be3814 | 8301 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8302 | return; |
8303 | ||
8304 | /* For now, don't complain if we have no way to write the | |
8305 | register. GDB loses track of unavailable registers too | |
8306 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8307 | any way to read the register, either... */ |
74ca34ce DJ |
8308 | if (!reg->in_g_packet) |
8309 | return; | |
8310 | ||
56be3814 | 8311 | store_registers_using_G (regcache); |
74ca34ce DJ |
8312 | return; |
8313 | } | |
8314 | ||
56be3814 | 8315 | store_registers_using_G (regcache); |
74ca34ce | 8316 | |
5cd63fda | 8317 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8318 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8319 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8320 | /* See above for why we do not issue an error here. */ |
8321 | continue; | |
8322 | } | |
c906108c SS |
8323 | \f |
8324 | ||
8325 | /* Return the number of hex digits in num. */ | |
8326 | ||
8327 | static int | |
fba45db2 | 8328 | hexnumlen (ULONGEST num) |
c906108c SS |
8329 | { |
8330 | int i; | |
8331 | ||
8332 | for (i = 0; num != 0; i++) | |
8333 | num >>= 4; | |
8334 | ||
325fac50 | 8335 | return std::max (i, 1); |
c906108c SS |
8336 | } |
8337 | ||
2df3850c | 8338 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8339 | |
8340 | static int | |
fba45db2 | 8341 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8342 | { |
c906108c | 8343 | int len = hexnumlen (num); |
a744cf53 | 8344 | |
2df3850c JM |
8345 | return hexnumnstr (buf, num, len); |
8346 | } | |
8347 | ||
c906108c | 8348 | |
2df3850c | 8349 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8350 | |
2df3850c | 8351 | static int |
fba45db2 | 8352 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8353 | { |
8354 | int i; | |
8355 | ||
8356 | buf[width] = '\0'; | |
8357 | ||
8358 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8359 | { |
c5aa993b | 8360 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8361 | num >>= 4; |
8362 | } | |
8363 | ||
2df3850c | 8364 | return width; |
c906108c SS |
8365 | } |
8366 | ||
23860348 | 8367 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8368 | |
8369 | static CORE_ADDR | |
fba45db2 | 8370 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8371 | { |
883b9c6c | 8372 | unsigned int address_size = remote_address_size; |
a744cf53 | 8373 | |
911c95a5 UW |
8374 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8375 | if (!address_size) | |
f5656ead | 8376 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8377 | |
8378 | if (address_size > 0 | |
8379 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8380 | { |
8381 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8382 | in a ULONGEST variable. */ |
c906108c | 8383 | ULONGEST mask = 1; |
a744cf53 | 8384 | |
911c95a5 | 8385 | mask = (mask << address_size) - 1; |
c906108c SS |
8386 | addr &= mask; |
8387 | } | |
8388 | return addr; | |
8389 | } | |
8390 | ||
8391 | /* Determine whether the remote target supports binary downloading. | |
8392 | This is accomplished by sending a no-op memory write of zero length | |
8393 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8394 | the whole packet, since many stubs strip the eighth bit and |
8395 | subsequently compute a wrong checksum, which causes real havoc with | |
8396 | remote_write_bytes. | |
7a292a7a | 8397 | |
96baa820 | 8398 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8399 | clean. In cases like this, the user should clear "remote |
23860348 | 8400 | X-packet". */ |
96baa820 | 8401 | |
6b8edb51 PA |
8402 | void |
8403 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8404 | { |
d01949b6 | 8405 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8406 | |
4082afcc | 8407 | switch (packet_support (PACKET_X)) |
c906108c | 8408 | { |
96baa820 JM |
8409 | case PACKET_DISABLE: |
8410 | break; | |
8411 | case PACKET_ENABLE: | |
8412 | break; | |
8413 | case PACKET_SUPPORT_UNKNOWN: | |
8414 | { | |
96baa820 | 8415 | char *p; |
802188a7 | 8416 | |
8d64371b | 8417 | p = rs->buf.data (); |
96baa820 JM |
8418 | *p++ = 'X'; |
8419 | p += hexnumstr (p, (ULONGEST) addr); | |
8420 | *p++ = ','; | |
8421 | p += hexnumstr (p, (ULONGEST) 0); | |
8422 | *p++ = ':'; | |
8423 | *p = '\0'; | |
802188a7 | 8424 | |
8d64371b TT |
8425 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8426 | getpkt (&rs->buf, 0); | |
c906108c | 8427 | |
2e9f7625 | 8428 | if (rs->buf[0] == '\0') |
96baa820 JM |
8429 | { |
8430 | if (remote_debug) | |
8431 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8432 | "binary downloading NOT " |
8433 | "supported by target\n"); | |
444abaca | 8434 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8435 | } |
8436 | else | |
8437 | { | |
8438 | if (remote_debug) | |
8439 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8440 | "binary downloading supported by target\n"); |
444abaca | 8441 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8442 | } |
8443 | break; | |
8444 | } | |
c906108c SS |
8445 | } |
8446 | } | |
8447 | ||
124e13d9 SM |
8448 | /* Helper function to resize the payload in order to try to get a good |
8449 | alignment. We try to write an amount of data such that the next write will | |
8450 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8451 | ||
8452 | static int | |
8453 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8454 | { | |
8455 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8456 | } | |
8457 | ||
c906108c SS |
8458 | /* Write memory data directly to the remote machine. |
8459 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8460 | HEADER is the starting part of the packet. |
c906108c SS |
8461 | MEMADDR is the address in the remote memory space. |
8462 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8463 | LEN_UNITS is the number of addressable units to write. |
8464 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8465 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8466 | should send data as binary ('X'), or hex-encoded ('M'). | |
8467 | ||
8468 | The function creates packet of the form | |
8469 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8470 | ||
124e13d9 | 8471 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8472 | |
8473 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8474 | are omitted. | |
8475 | ||
9b409511 | 8476 | Return the transferred status, error or OK (an |
124e13d9 SM |
8477 | 'enum target_xfer_status' value). Save the number of addressable units |
8478 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8479 | ||
8480 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8481 | exchange between gdb and the stub could look like (?? in place of the | |
8482 | checksum): | |
8483 | ||
8484 | -> $m1000,4#?? | |
8485 | <- aaaabbbbccccdddd | |
8486 | ||
8487 | -> $M1000,3:eeeeffffeeee#?? | |
8488 | <- OK | |
8489 | ||
8490 | -> $m1000,4#?? | |
8491 | <- eeeeffffeeeedddd */ | |
c906108c | 8492 | |
6b8edb51 PA |
8493 | target_xfer_status |
8494 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8495 | const gdb_byte *myaddr, | |
8496 | ULONGEST len_units, | |
8497 | int unit_size, | |
8498 | ULONGEST *xfered_len_units, | |
8499 | char packet_format, int use_length) | |
c906108c | 8500 | { |
6d820c5c | 8501 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8502 | char *p; |
a76d924d DJ |
8503 | char *plen = NULL; |
8504 | int plenlen = 0; | |
124e13d9 SM |
8505 | int todo_units; |
8506 | int units_written; | |
8507 | int payload_capacity_bytes; | |
8508 | int payload_length_bytes; | |
a76d924d DJ |
8509 | |
8510 | if (packet_format != 'X' && packet_format != 'M') | |
8511 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8512 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8513 | |
124e13d9 | 8514 | if (len_units == 0) |
9b409511 | 8515 | return TARGET_XFER_EOF; |
b2182ed2 | 8516 | |
124e13d9 | 8517 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8518 | |
6d820c5c DJ |
8519 | /* The packet buffer will be large enough for the payload; |
8520 | get_memory_packet_size ensures this. */ | |
a76d924d | 8521 | rs->buf[0] = '\0'; |
c906108c | 8522 | |
a257b5bb | 8523 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8524 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8525 | ||
124e13d9 | 8526 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8527 | if (!use_length) |
0df8b418 | 8528 | /* The comma won't be used. */ |
124e13d9 SM |
8529 | payload_capacity_bytes += 1; |
8530 | payload_capacity_bytes -= strlen (header); | |
8531 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8532 | |
a76d924d | 8533 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8534 | |
8d64371b TT |
8535 | strcat (rs->buf.data (), header); |
8536 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8537 | |
8538 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8539 | if (packet_format == 'X') | |
c906108c | 8540 | { |
23860348 | 8541 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8542 | todo_units = std::min (len_units, |
8543 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8544 | if (use_length) |
124e13d9 | 8545 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8546 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8547 | } |
8548 | else | |
8549 | { | |
124e13d9 | 8550 | /* Number of bytes that will fit. */ |
325fac50 PA |
8551 | todo_units |
8552 | = std::min (len_units, | |
8553 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8554 | if (use_length) |
124e13d9 | 8555 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8556 | todo_units = std::min (todo_units, |
8557 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8558 | } |
a76d924d | 8559 | |
124e13d9 | 8560 | if (todo_units <= 0) |
3de11b2e | 8561 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8562 | _("minimum packet size too small to write data")); |
802188a7 | 8563 | |
6765f3e5 DJ |
8564 | /* If we already need another packet, then try to align the end |
8565 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8566 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8567 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8568 | |
a257b5bb | 8569 | /* Append "<memaddr>". */ |
917317f4 JM |
8570 | memaddr = remote_address_masked (memaddr); |
8571 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8572 | |
a76d924d DJ |
8573 | if (use_length) |
8574 | { | |
8575 | /* Append ",". */ | |
8576 | *p++ = ','; | |
802188a7 | 8577 | |
124e13d9 SM |
8578 | /* Append the length and retain its location and size. It may need to be |
8579 | adjusted once the packet body has been created. */ | |
a76d924d | 8580 | plen = p; |
124e13d9 | 8581 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8582 | p += plenlen; |
8583 | } | |
a257b5bb AC |
8584 | |
8585 | /* Append ":". */ | |
917317f4 JM |
8586 | *p++ = ':'; |
8587 | *p = '\0'; | |
802188a7 | 8588 | |
a257b5bb | 8589 | /* Append the packet body. */ |
a76d924d | 8590 | if (packet_format == 'X') |
917317f4 | 8591 | { |
917317f4 JM |
8592 | /* Binary mode. Send target system values byte by byte, in |
8593 | increasing byte addresses. Only escape certain critical | |
8594 | characters. */ | |
124e13d9 SM |
8595 | payload_length_bytes = |
8596 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8597 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8598 | |
124e13d9 | 8599 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8600 | a second try to keep the end of the packet aligned. Don't do |
8601 | this if the packet is tiny. */ | |
124e13d9 | 8602 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8603 | { |
124e13d9 SM |
8604 | int new_todo_units; |
8605 | ||
8606 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8607 | ||
8608 | if (new_todo_units != units_written) | |
8609 | payload_length_bytes = | |
8610 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8611 | (gdb_byte *) p, &units_written, | |
8612 | payload_capacity_bytes); | |
6765f3e5 DJ |
8613 | } |
8614 | ||
124e13d9 SM |
8615 | p += payload_length_bytes; |
8616 | if (use_length && units_written < todo_units) | |
c906108c | 8617 | { |
802188a7 | 8618 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8619 | and we have actually sent fewer units than planned. |
917317f4 JM |
8620 | Fix-up the length field of the packet. Use the same |
8621 | number of characters as before. */ | |
124e13d9 SM |
8622 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8623 | plenlen); | |
917317f4 | 8624 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8625 | } |
a76d924d DJ |
8626 | } |
8627 | else | |
8628 | { | |
917317f4 JM |
8629 | /* Normal mode: Send target system values byte by byte, in |
8630 | increasing byte addresses. Each byte is encoded as a two hex | |
8631 | value. */ | |
124e13d9 SM |
8632 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8633 | units_written = todo_units; | |
c906108c | 8634 | } |
802188a7 | 8635 | |
8d64371b TT |
8636 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8637 | getpkt (&rs->buf, 0); | |
802188a7 | 8638 | |
2e9f7625 | 8639 | if (rs->buf[0] == 'E') |
00d84524 | 8640 | return TARGET_XFER_E_IO; |
802188a7 | 8641 | |
124e13d9 SM |
8642 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8643 | send fewer units than we'd planned. */ | |
8644 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8645 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8646 | } |
8647 | ||
a76d924d DJ |
8648 | /* Write memory data directly to the remote machine. |
8649 | This does not inform the data cache; the data cache uses this. | |
8650 | MEMADDR is the address in the remote memory space. | |
8651 | MYADDR is the address of the buffer in our space. | |
8652 | LEN is the number of bytes. | |
8653 | ||
9b409511 YQ |
8654 | Return the transferred status, error or OK (an |
8655 | 'enum target_xfer_status' value). Save the number of bytes | |
8656 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8657 | |
6b8edb51 PA |
8658 | target_xfer_status |
8659 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
8660 | ULONGEST len, int unit_size, | |
8661 | ULONGEST *xfered_len) | |
a76d924d | 8662 | { |
a121b7c1 | 8663 | const char *packet_format = NULL; |
a76d924d DJ |
8664 | |
8665 | /* Check whether the target supports binary download. */ | |
8666 | check_binary_download (memaddr); | |
8667 | ||
4082afcc | 8668 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8669 | { |
8670 | case PACKET_ENABLE: | |
8671 | packet_format = "X"; | |
8672 | break; | |
8673 | case PACKET_DISABLE: | |
8674 | packet_format = "M"; | |
8675 | break; | |
8676 | case PACKET_SUPPORT_UNKNOWN: | |
8677 | internal_error (__FILE__, __LINE__, | |
8678 | _("remote_write_bytes: bad internal state")); | |
8679 | default: | |
8680 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8681 | } | |
8682 | ||
8683 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8684 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8685 | packet_format[0], 1); |
a76d924d DJ |
8686 | } |
8687 | ||
9217e74e YQ |
8688 | /* Read memory data directly from the remote machine. |
8689 | This does not use the data cache; the data cache uses this. | |
8690 | MEMADDR is the address in the remote memory space. | |
8691 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8692 | LEN_UNITS is the number of addressable memory units to read.. |
8693 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8694 | |
8695 | Return the transferred status, error or OK (an | |
8696 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8697 | transferred in *XFERED_LEN_UNITS. |
8698 | ||
8699 | See the comment of remote_write_bytes_aux for an example of | |
8700 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 8701 | |
6b8edb51 PA |
8702 | target_xfer_status |
8703 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
8704 | ULONGEST len_units, | |
8705 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8706 | { |
8707 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8708 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8709 | char *p; |
124e13d9 SM |
8710 | int todo_units; |
8711 | int decoded_bytes; | |
9217e74e | 8712 | |
124e13d9 | 8713 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8714 | /* The packet buffer will be large enough for the payload; |
8715 | get_memory_packet_size ensures this. */ | |
8716 | ||
124e13d9 | 8717 | /* Number of units that will fit. */ |
325fac50 PA |
8718 | todo_units = std::min (len_units, |
8719 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8720 | |
8721 | /* Construct "m"<memaddr>","<len>". */ | |
8722 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 8723 | p = rs->buf.data (); |
9217e74e YQ |
8724 | *p++ = 'm'; |
8725 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8726 | *p++ = ','; | |
124e13d9 | 8727 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8728 | *p = '\0'; |
8729 | putpkt (rs->buf); | |
8d64371b | 8730 | getpkt (&rs->buf, 0); |
9217e74e YQ |
8731 | if (rs->buf[0] == 'E' |
8732 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8733 | && rs->buf[3] == '\0') | |
8734 | return TARGET_XFER_E_IO; | |
8735 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8736 | characters. */ | |
8d64371b | 8737 | p = rs->buf.data (); |
124e13d9 | 8738 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8739 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8740 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8741 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8742 | } |
8743 | ||
b55fbac4 YQ |
8744 | /* Using the set of read-only target sections of remote, read live |
8745 | read-only memory. | |
8acf9577 YQ |
8746 | |
8747 | For interface/parameters/return description see target.h, | |
8748 | to_xfer_partial. */ | |
8749 | ||
6b8edb51 PA |
8750 | target_xfer_status |
8751 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
8752 | ULONGEST memaddr, | |
8753 | ULONGEST len, | |
8754 | int unit_size, | |
8755 | ULONGEST *xfered_len) | |
8acf9577 YQ |
8756 | { |
8757 | struct target_section *secp; | |
8758 | struct target_section_table *table; | |
8759 | ||
6b8edb51 | 8760 | secp = target_section_by_addr (this, memaddr); |
8acf9577 YQ |
8761 | if (secp != NULL |
8762 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8763 | secp->the_bfd_section) | |
8764 | & SEC_READONLY)) | |
8765 | { | |
8766 | struct target_section *p; | |
8767 | ULONGEST memend = memaddr + len; | |
8768 | ||
6b8edb51 | 8769 | table = target_get_section_table (this); |
8acf9577 YQ |
8770 | |
8771 | for (p = table->sections; p < table->sections_end; p++) | |
8772 | { | |
8773 | if (memaddr >= p->addr) | |
8774 | { | |
8775 | if (memend <= p->endaddr) | |
8776 | { | |
8777 | /* Entire transfer is within this section. */ | |
124e13d9 | 8778 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8779 | xfered_len); |
8acf9577 YQ |
8780 | } |
8781 | else if (memaddr >= p->endaddr) | |
8782 | { | |
8783 | /* This section ends before the transfer starts. */ | |
8784 | continue; | |
8785 | } | |
8786 | else | |
8787 | { | |
8788 | /* This section overlaps the transfer. Just do half. */ | |
8789 | len = p->endaddr - memaddr; | |
124e13d9 | 8790 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8791 | xfered_len); |
8acf9577 YQ |
8792 | } |
8793 | } | |
8794 | } | |
8795 | } | |
8796 | ||
8797 | return TARGET_XFER_EOF; | |
8798 | } | |
8799 | ||
9217e74e YQ |
8800 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8801 | first if the requested memory is unavailable in traceframe. | |
8802 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8803 | |
6b8edb51 PA |
8804 | target_xfer_status |
8805 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
8806 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
8807 | ULONGEST *xfered_len) | |
c906108c | 8808 | { |
6b6aa828 | 8809 | if (len == 0) |
96c4f946 | 8810 | return TARGET_XFER_EOF; |
b2182ed2 | 8811 | |
8acf9577 YQ |
8812 | if (get_traceframe_number () != -1) |
8813 | { | |
a79b1bc6 | 8814 | std::vector<mem_range> available; |
8acf9577 YQ |
8815 | |
8816 | /* If we fail to get the set of available memory, then the | |
8817 | target does not support querying traceframe info, and so we | |
8818 | attempt reading from the traceframe anyway (assuming the | |
8819 | target implements the old QTro packet then). */ | |
8820 | if (traceframe_available_memory (&available, memaddr, len)) | |
8821 | { | |
a79b1bc6 | 8822 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8823 | { |
8824 | enum target_xfer_status res; | |
8825 | ||
8826 | /* Don't read into the traceframe's available | |
8827 | memory. */ | |
a79b1bc6 | 8828 | if (!available.empty ()) |
8acf9577 YQ |
8829 | { |
8830 | LONGEST oldlen = len; | |
8831 | ||
a79b1bc6 | 8832 | len = available[0].start - memaddr; |
8acf9577 YQ |
8833 | gdb_assert (len <= oldlen); |
8834 | } | |
8835 | ||
8acf9577 | 8836 | /* This goes through the topmost target again. */ |
6b8edb51 | 8837 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 8838 | len, unit_size, xfered_len); |
8acf9577 YQ |
8839 | if (res == TARGET_XFER_OK) |
8840 | return TARGET_XFER_OK; | |
8841 | else | |
8842 | { | |
8843 | /* No use trying further, we know some memory starting | |
8844 | at MEMADDR isn't available. */ | |
8845 | *xfered_len = len; | |
92ffd475 PC |
8846 | return (*xfered_len != 0) ? |
8847 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8848 | } |
8849 | } | |
8850 | ||
8851 | /* Don't try to read more than how much is available, in | |
8852 | case the target implements the deprecated QTro packet to | |
8853 | cater for older GDBs (the target's knowledge of read-only | |
8854 | sections may be outdated by now). */ | |
a79b1bc6 | 8855 | len = available[0].length; |
8acf9577 YQ |
8856 | } |
8857 | } | |
8858 | ||
124e13d9 | 8859 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8860 | } |
74531fed | 8861 | |
c906108c | 8862 | \f |
c906108c | 8863 | |
a76d924d DJ |
8864 | /* Sends a packet with content determined by the printf format string |
8865 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8866 | whether the packet was a success, a failure, or unknown. */ | |
8867 | ||
6b8edb51 PA |
8868 | packet_result |
8869 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
8870 | { |
8871 | struct remote_state *rs = get_remote_state (); | |
8872 | int max_size = get_remote_packet_size (); | |
a76d924d | 8873 | va_list ap; |
a744cf53 | 8874 | |
a76d924d DJ |
8875 | va_start (ap, format); |
8876 | ||
8877 | rs->buf[0] = '\0'; | |
8d64371b | 8878 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
8879 | |
8880 | va_end (ap); | |
8881 | ||
8882 | if (size >= max_size) | |
9b20d036 | 8883 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8884 | |
8885 | if (putpkt (rs->buf) < 0) | |
8886 | error (_("Communication problem with target.")); | |
8887 | ||
8888 | rs->buf[0] = '\0'; | |
8d64371b | 8889 | getpkt (&rs->buf, 0); |
a76d924d DJ |
8890 | |
8891 | return packet_check_result (rs->buf); | |
8892 | } | |
8893 | ||
a76d924d DJ |
8894 | /* Flash writing can take quite some time. We'll set |
8895 | effectively infinite timeout for flash operations. | |
8896 | In future, we'll need to decide on a better approach. */ | |
8897 | static const int remote_flash_timeout = 1000; | |
8898 | ||
f6ac5f3d PA |
8899 | void |
8900 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 8901 | { |
f5656ead | 8902 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8903 | enum packet_result ret; |
2ec845e7 TT |
8904 | scoped_restore restore_timeout |
8905 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8906 | |
8907 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8908 | phex (address, addr_size), |
a76d924d DJ |
8909 | phex (length, 4)); |
8910 | switch (ret) | |
8911 | { | |
8912 | case PACKET_UNKNOWN: | |
8913 | error (_("Remote target does not support flash erase")); | |
8914 | case PACKET_ERROR: | |
8915 | error (_("Error erasing flash with vFlashErase packet")); | |
8916 | default: | |
8917 | break; | |
8918 | } | |
a76d924d DJ |
8919 | } |
8920 | ||
6b8edb51 PA |
8921 | target_xfer_status |
8922 | remote_target::remote_flash_write (ULONGEST address, | |
8923 | ULONGEST length, ULONGEST *xfered_len, | |
8924 | const gdb_byte *data) | |
a76d924d | 8925 | { |
2ec845e7 TT |
8926 | scoped_restore restore_timeout |
8927 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8928 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8929 | xfered_len,'X', 0); | |
a76d924d DJ |
8930 | } |
8931 | ||
f6ac5f3d PA |
8932 | void |
8933 | remote_target::flash_done () | |
a76d924d | 8934 | { |
a76d924d | 8935 | int ret; |
a76d924d | 8936 | |
2ec845e7 TT |
8937 | scoped_restore restore_timeout |
8938 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8939 | ||
a76d924d | 8940 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8941 | |
8942 | switch (ret) | |
8943 | { | |
8944 | case PACKET_UNKNOWN: | |
8945 | error (_("Remote target does not support vFlashDone")); | |
8946 | case PACKET_ERROR: | |
8947 | error (_("Error finishing flash operation")); | |
8948 | default: | |
8949 | break; | |
8950 | } | |
8951 | } | |
8952 | ||
f6ac5f3d PA |
8953 | void |
8954 | remote_target::files_info () | |
c906108c SS |
8955 | { |
8956 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8957 | } | |
8958 | \f | |
8959 | /* Stuff for dealing with the packets which are part of this protocol. | |
8960 | See comment at top of file for details. */ | |
8961 | ||
1927e618 PA |
8962 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8963 | error to higher layers. Called when a serial error is detected. | |
8964 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8965 | the system error message for errno at function entry and final dot |
8966 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8967 | |
8968 | static void | |
8969 | unpush_and_perror (const char *string) | |
8970 | { | |
d6cb50a2 | 8971 | int saved_errno = errno; |
1927e618 PA |
8972 | |
8973 | remote_unpush_target (); | |
d6cb50a2 JK |
8974 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8975 | safe_strerror (saved_errno)); | |
1927e618 PA |
8976 | } |
8977 | ||
048094ac PA |
8978 | /* Read a single character from the remote end. The current quit |
8979 | handler is overridden to avoid quitting in the middle of packet | |
8980 | sequence, as that would break communication with the remote server. | |
8981 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 8982 | |
6b8edb51 PA |
8983 | int |
8984 | remote_target::readchar (int timeout) | |
c906108c SS |
8985 | { |
8986 | int ch; | |
5d93a237 | 8987 | struct remote_state *rs = get_remote_state (); |
048094ac | 8988 | |
2ec845e7 | 8989 | { |
6b8edb51 PA |
8990 | scoped_restore restore_quit_target |
8991 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 8992 | scoped_restore restore_quit |
6b8edb51 | 8993 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 8994 | |
2ec845e7 | 8995 | rs->got_ctrlc_during_io = 0; |
c906108c | 8996 | |
2ec845e7 | 8997 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8998 | |
2ec845e7 TT |
8999 | if (rs->got_ctrlc_during_io) |
9000 | set_quit_flag (); | |
9001 | } | |
048094ac | 9002 | |
2acceee2 | 9003 | if (ch >= 0) |
0876f84a | 9004 | return ch; |
2acceee2 JM |
9005 | |
9006 | switch ((enum serial_rc) ch) | |
c906108c SS |
9007 | { |
9008 | case SERIAL_EOF: | |
78a095c3 | 9009 | remote_unpush_target (); |
598d3636 | 9010 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9011 | /* no return */ |
c906108c | 9012 | case SERIAL_ERROR: |
1927e618 PA |
9013 | unpush_and_perror (_("Remote communication error. " |
9014 | "Target disconnected.")); | |
2acceee2 | 9015 | /* no return */ |
c906108c | 9016 | case SERIAL_TIMEOUT: |
2acceee2 | 9017 | break; |
c906108c | 9018 | } |
2acceee2 | 9019 | return ch; |
c906108c SS |
9020 | } |
9021 | ||
c33e31fd | 9022 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9023 | writing fails. The current quit handler is overridden to avoid |
9024 | quitting in the middle of packet sequence, as that would break | |
9025 | communication with the remote server. See | |
9026 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9027 | |
6b8edb51 PA |
9028 | void |
9029 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9030 | { |
5d93a237 | 9031 | struct remote_state *rs = get_remote_state (); |
048094ac | 9032 | |
6b8edb51 PA |
9033 | scoped_restore restore_quit_target |
9034 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9035 | scoped_restore restore_quit |
6b8edb51 | 9036 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9037 | |
9038 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9039 | |
9040 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9041 | { |
1927e618 PA |
9042 | unpush_and_perror (_("Remote communication error. " |
9043 | "Target disconnected.")); | |
c33e31fd | 9044 | } |
048094ac PA |
9045 | |
9046 | if (rs->got_ctrlc_during_io) | |
9047 | set_quit_flag (); | |
c33e31fd PA |
9048 | } |
9049 | ||
b3ced9ba PA |
9050 | /* Return a string representing an escaped version of BUF, of len N. |
9051 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9052 | |
b3ced9ba | 9053 | static std::string |
6e5abd65 PA |
9054 | escape_buffer (const char *buf, int n) |
9055 | { | |
d7e74731 | 9056 | string_file stb; |
6e5abd65 | 9057 | |
d7e74731 PA |
9058 | stb.putstrn (buf, n, '\\'); |
9059 | return std::move (stb.string ()); | |
6e5abd65 PA |
9060 | } |
9061 | ||
c906108c SS |
9062 | /* Display a null-terminated packet on stdout, for debugging, using C |
9063 | string notation. */ | |
9064 | ||
9065 | static void | |
baa336ce | 9066 | print_packet (const char *buf) |
c906108c SS |
9067 | { |
9068 | puts_filtered ("\""); | |
43e526b9 | 9069 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9070 | puts_filtered ("\""); |
9071 | } | |
9072 | ||
9073 | int | |
6b8edb51 | 9074 | remote_target::putpkt (const char *buf) |
c906108c SS |
9075 | { |
9076 | return putpkt_binary (buf, strlen (buf)); | |
9077 | } | |
9078 | ||
6b8edb51 PA |
9079 | /* Wrapper around remote_target::putpkt to avoid exporting |
9080 | remote_target. */ | |
9081 | ||
9082 | int | |
9083 | putpkt (remote_target *remote, const char *buf) | |
9084 | { | |
9085 | return remote->putpkt (buf); | |
9086 | } | |
9087 | ||
c906108c | 9088 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9089 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9090 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9091 | and for a possible /0 if we are debugging (remote_debug) and want |
9092 | to print the sent packet as a string. */ | |
c906108c | 9093 | |
6b8edb51 PA |
9094 | int |
9095 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9096 | { |
2d717e4f | 9097 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9098 | int i; |
9099 | unsigned char csum = 0; | |
b80406ac TT |
9100 | gdb::def_vector<char> data (cnt + 6); |
9101 | char *buf2 = data.data (); | |
085dd6e6 | 9102 | |
c906108c SS |
9103 | int ch; |
9104 | int tcount = 0; | |
9105 | char *p; | |
9106 | ||
e24a49d8 PA |
9107 | /* Catch cases like trying to read memory or listing threads while |
9108 | we're waiting for a stop reply. The remote server wouldn't be | |
9109 | ready to handle this request, so we'd hang and timeout. We don't | |
9110 | have to worry about this in synchronous mode, because in that | |
9111 | case it's not possible to issue a command while the target is | |
74531fed PA |
9112 | running. This is not a problem in non-stop mode, because in that |
9113 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9114 | if (!target_is_non_stop_p () |
9115 | && target_is_async_p () | |
9116 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9117 | { |
9118 | error (_("Cannot execute this command while the target is running.\n" | |
9119 | "Use the \"interrupt\" command to stop the target\n" | |
9120 | "and then try again.")); | |
9121 | } | |
e24a49d8 | 9122 | |
2d717e4f DJ |
9123 | /* We're sending out a new packet. Make sure we don't look at a |
9124 | stale cached response. */ | |
9125 | rs->cached_wait_status = 0; | |
9126 | ||
c906108c SS |
9127 | /* Copy the packet into buffer BUF2, encapsulating it |
9128 | and giving it a checksum. */ | |
9129 | ||
c906108c SS |
9130 | p = buf2; |
9131 | *p++ = '$'; | |
9132 | ||
9133 | for (i = 0; i < cnt; i++) | |
9134 | { | |
9135 | csum += buf[i]; | |
9136 | *p++ = buf[i]; | |
9137 | } | |
9138 | *p++ = '#'; | |
9139 | *p++ = tohex ((csum >> 4) & 0xf); | |
9140 | *p++ = tohex (csum & 0xf); | |
9141 | ||
9142 | /* Send it over and over until we get a positive ack. */ | |
9143 | ||
9144 | while (1) | |
9145 | { | |
9146 | int started_error_output = 0; | |
9147 | ||
9148 | if (remote_debug) | |
9149 | { | |
9150 | *p = '\0'; | |
b3ced9ba | 9151 | |
6f8976bf YQ |
9152 | int len = (int) (p - buf2); |
9153 | ||
9154 | std::string str | |
9155 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
9156 | ||
9157 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9158 | ||
567a3e54 SM |
9159 | if (len > REMOTE_DEBUG_MAX_CHAR) |
9160 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9161 | len - REMOTE_DEBUG_MAX_CHAR); | |
6f8976bf YQ |
9162 | |
9163 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9164 | |
0f71a2f6 | 9165 | gdb_flush (gdb_stdlog); |
c906108c | 9166 | } |
c33e31fd | 9167 | remote_serial_write (buf2, p - buf2); |
c906108c | 9168 | |
a6f3e723 SL |
9169 | /* If this is a no acks version of the remote protocol, send the |
9170 | packet and move on. */ | |
9171 | if (rs->noack_mode) | |
9172 | break; | |
9173 | ||
74531fed PA |
9174 | /* Read until either a timeout occurs (-2) or '+' is read. |
9175 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9176 | while (1) |
9177 | { | |
9178 | ch = readchar (remote_timeout); | |
9179 | ||
c5aa993b | 9180 | if (remote_debug) |
c906108c SS |
9181 | { |
9182 | switch (ch) | |
9183 | { | |
9184 | case '+': | |
1216fa2c | 9185 | case '-': |
c906108c SS |
9186 | case SERIAL_TIMEOUT: |
9187 | case '$': | |
74531fed | 9188 | case '%': |
c906108c SS |
9189 | if (started_error_output) |
9190 | { | |
9191 | putchar_unfiltered ('\n'); | |
9192 | started_error_output = 0; | |
9193 | } | |
9194 | } | |
9195 | } | |
9196 | ||
9197 | switch (ch) | |
9198 | { | |
9199 | case '+': | |
9200 | if (remote_debug) | |
0f71a2f6 | 9201 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9202 | return 1; |
1216fa2c AC |
9203 | case '-': |
9204 | if (remote_debug) | |
9205 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9206 | /* FALLTHROUGH */ |
c906108c | 9207 | case SERIAL_TIMEOUT: |
c5aa993b | 9208 | tcount++; |
c906108c | 9209 | if (tcount > 3) |
b80406ac | 9210 | return 0; |
23860348 | 9211 | break; /* Retransmit buffer. */ |
c906108c SS |
9212 | case '$': |
9213 | { | |
40e3f985 | 9214 | if (remote_debug) |
2bc416ba | 9215 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9216 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9217 | /* It's probably an old response sent because an ACK |
9218 | was lost. Gobble up the packet and ack it so it | |
9219 | doesn't get retransmitted when we resend this | |
9220 | packet. */ | |
6d820c5c | 9221 | skip_frame (); |
c33e31fd | 9222 | remote_serial_write ("+", 1); |
23860348 | 9223 | continue; /* Now, go look for +. */ |
c906108c | 9224 | } |
74531fed PA |
9225 | |
9226 | case '%': | |
9227 | { | |
9228 | int val; | |
9229 | ||
9230 | /* If we got a notification, handle it, and go back to looking | |
9231 | for an ack. */ | |
9232 | /* We've found the start of a notification. Now | |
9233 | collect the data. */ | |
8d64371b | 9234 | val = read_frame (&rs->buf); |
74531fed PA |
9235 | if (val >= 0) |
9236 | { | |
9237 | if (remote_debug) | |
9238 | { | |
8d64371b | 9239 | std::string str = escape_buffer (rs->buf.data (), val); |
6e5abd65 | 9240 | |
6e5abd65 PA |
9241 | fprintf_unfiltered (gdb_stdlog, |
9242 | " Notification received: %s\n", | |
b3ced9ba | 9243 | str.c_str ()); |
74531fed | 9244 | } |
8d64371b | 9245 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9246 | /* We're in sync now, rewait for the ack. */ |
9247 | tcount = 0; | |
9248 | } | |
9249 | else | |
9250 | { | |
9251 | if (remote_debug) | |
9252 | { | |
9253 | if (!started_error_output) | |
9254 | { | |
9255 | started_error_output = 1; | |
9256 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9257 | } | |
9258 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8d64371b | 9259 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf.data ()); |
74531fed PA |
9260 | } |
9261 | } | |
9262 | continue; | |
9263 | } | |
9264 | /* fall-through */ | |
c906108c SS |
9265 | default: |
9266 | if (remote_debug) | |
9267 | { | |
9268 | if (!started_error_output) | |
9269 | { | |
9270 | started_error_output = 1; | |
0f71a2f6 | 9271 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9272 | } |
0f71a2f6 | 9273 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9274 | } |
9275 | continue; | |
9276 | } | |
23860348 | 9277 | break; /* Here to retransmit. */ |
c906108c SS |
9278 | } |
9279 | ||
9280 | #if 0 | |
9281 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
9282 | able to get out next time we call QUIT, without anything as |
9283 | violent as interrupt_query. If we want to provide a way out of | |
9284 | here without getting to the next QUIT, it should be based on | |
9285 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9286 | if (quit_flag) |
9287 | { | |
9288 | quit_flag = 0; | |
9289 | interrupt_query (); | |
9290 | } | |
9291 | #endif | |
9292 | } | |
a5c0808e | 9293 | |
a6f3e723 | 9294 | return 0; |
c906108c SS |
9295 | } |
9296 | ||
6d820c5c DJ |
9297 | /* Come here after finding the start of a frame when we expected an |
9298 | ack. Do our best to discard the rest of this packet. */ | |
9299 | ||
6b8edb51 PA |
9300 | void |
9301 | remote_target::skip_frame () | |
6d820c5c DJ |
9302 | { |
9303 | int c; | |
9304 | ||
9305 | while (1) | |
9306 | { | |
9307 | c = readchar (remote_timeout); | |
9308 | switch (c) | |
9309 | { | |
9310 | case SERIAL_TIMEOUT: | |
9311 | /* Nothing we can do. */ | |
9312 | return; | |
9313 | case '#': | |
9314 | /* Discard the two bytes of checksum and stop. */ | |
9315 | c = readchar (remote_timeout); | |
9316 | if (c >= 0) | |
9317 | c = readchar (remote_timeout); | |
9318 | ||
9319 | return; | |
9320 | case '*': /* Run length encoding. */ | |
9321 | /* Discard the repeat count. */ | |
9322 | c = readchar (remote_timeout); | |
9323 | if (c < 0) | |
9324 | return; | |
9325 | break; | |
9326 | default: | |
9327 | /* A regular character. */ | |
9328 | break; | |
9329 | } | |
9330 | } | |
9331 | } | |
9332 | ||
c906108c | 9333 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9334 | into *BUF, verifying the checksum, length, and handling run-length |
9335 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9336 | expand *BUF. |
c906108c | 9337 | |
c2d11a7d JM |
9338 | Returns -1 on error, number of characters in buffer (ignoring the |
9339 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9340 | SERIAL status indications). */ |
c2d11a7d | 9341 | |
6b8edb51 | 9342 | long |
8d64371b | 9343 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9344 | { |
9345 | unsigned char csum; | |
c2d11a7d | 9346 | long bc; |
c906108c | 9347 | int c; |
8d64371b | 9348 | char *buf = buf_p->data (); |
a6f3e723 | 9349 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9350 | |
9351 | csum = 0; | |
c2d11a7d | 9352 | bc = 0; |
c906108c SS |
9353 | |
9354 | while (1) | |
9355 | { | |
9356 | c = readchar (remote_timeout); | |
c906108c SS |
9357 | switch (c) |
9358 | { | |
9359 | case SERIAL_TIMEOUT: | |
9360 | if (remote_debug) | |
0f71a2f6 | 9361 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9362 | return -1; |
c906108c SS |
9363 | case '$': |
9364 | if (remote_debug) | |
0f71a2f6 JM |
9365 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9366 | gdb_stdlog); | |
23860348 | 9367 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9368 | case '#': |
9369 | { | |
9370 | unsigned char pktcsum; | |
e1b09194 AC |
9371 | int check_0 = 0; |
9372 | int check_1 = 0; | |
c906108c | 9373 | |
c2d11a7d | 9374 | buf[bc] = '\0'; |
c906108c | 9375 | |
e1b09194 AC |
9376 | check_0 = readchar (remote_timeout); |
9377 | if (check_0 >= 0) | |
9378 | check_1 = readchar (remote_timeout); | |
802188a7 | 9379 | |
e1b09194 AC |
9380 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9381 | { | |
9382 | if (remote_debug) | |
2bc416ba | 9383 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9384 | gdb_stdlog); |
e1b09194 AC |
9385 | return -1; |
9386 | } | |
9387 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9388 | { |
9389 | if (remote_debug) | |
2bc416ba | 9390 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9391 | gdb_stdlog); |
40e3f985 FN |
9392 | return -1; |
9393 | } | |
c906108c | 9394 | |
a6f3e723 SL |
9395 | /* Don't recompute the checksum; with no ack packets we |
9396 | don't have any way to indicate a packet retransmission | |
9397 | is necessary. */ | |
9398 | if (rs->noack_mode) | |
9399 | return bc; | |
9400 | ||
e1b09194 | 9401 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9402 | if (csum == pktcsum) |
c2d11a7d | 9403 | return bc; |
c906108c | 9404 | |
c5aa993b | 9405 | if (remote_debug) |
c906108c | 9406 | { |
b3ced9ba | 9407 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9408 | |
6e5abd65 | 9409 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9410 | "Bad checksum, sentsum=0x%x, " |
9411 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9412 | pktcsum, csum, str.c_str ()); |
c906108c | 9413 | } |
c2d11a7d | 9414 | /* Number of characters in buffer ignoring trailing |
23860348 | 9415 | NULL. */ |
c2d11a7d | 9416 | return -1; |
c906108c | 9417 | } |
23860348 | 9418 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9419 | { |
9420 | int repeat; | |
c906108c | 9421 | |
a744cf53 | 9422 | csum += c; |
b4501125 AC |
9423 | c = readchar (remote_timeout); |
9424 | csum += c; | |
23860348 | 9425 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9426 | |
23860348 | 9427 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9428 | |
6d820c5c | 9429 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9430 | { |
8d64371b | 9431 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9432 | { |
9433 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9434 | buf_p->resize (buf_p->size () + repeat); |
9435 | buf = buf_p->data (); | |
6d820c5c DJ |
9436 | } |
9437 | ||
c2d11a7d JM |
9438 | memset (&buf[bc], buf[bc - 1], repeat); |
9439 | bc += repeat; | |
c2c6d25f JM |
9440 | continue; |
9441 | } | |
9442 | ||
c2d11a7d | 9443 | buf[bc] = '\0'; |
6d820c5c | 9444 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9445 | return -1; |
c2c6d25f | 9446 | } |
c906108c | 9447 | default: |
8d64371b | 9448 | if (bc >= buf_p->size () - 1) |
c906108c | 9449 | { |
6d820c5c | 9450 | /* Make some more room in the buffer. */ |
8d64371b TT |
9451 | buf_p->resize (buf_p->size () * 2); |
9452 | buf = buf_p->data (); | |
c906108c SS |
9453 | } |
9454 | ||
6d820c5c DJ |
9455 | buf[bc++] = c; |
9456 | csum += c; | |
9457 | continue; | |
c906108c SS |
9458 | } |
9459 | } | |
9460 | } | |
9461 | ||
9462 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9463 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9464 | FOREVER, wait forever rather than timing out; this is used (in | |
9465 | synchronous mode) to wait for a target that is is executing user | |
9466 | code to stop. */ | |
d9fcf2fb JM |
9467 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9468 | don't have to change all the calls to getpkt to deal with the | |
9469 | return value, because at the moment I don't know what the right | |
23860348 | 9470 | thing to do it for those. */ |
6b8edb51 | 9471 | |
c906108c | 9472 | void |
8d64371b | 9473 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9474 | { |
8d64371b | 9475 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9476 | } |
9477 | ||
9478 | ||
9479 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9480 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9481 | FOREVER, wait forever rather than timing out; this is used (in | |
9482 | synchronous mode) to wait for a target that is is executing user | |
9483 | code to stop. If FOREVER == 0, this function is allowed to time | |
9484 | out gracefully and return an indication of this to the caller. | |
9485 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9486 | consider receiving a notification enough reason to return to the | |
9487 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9488 | holds a notification or not (a regular packet). */ | |
74531fed | 9489 | |
6b8edb51 | 9490 | int |
8d64371b | 9491 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9492 | int forever, int expecting_notif, |
9493 | int *is_notif) | |
c906108c | 9494 | { |
2d717e4f | 9495 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9496 | int c; |
9497 | int tries; | |
9498 | int timeout; | |
df4b58fe | 9499 | int val = -1; |
c906108c | 9500 | |
2d717e4f DJ |
9501 | /* We're reading a new response. Make sure we don't look at a |
9502 | previously cached response. */ | |
9503 | rs->cached_wait_status = 0; | |
9504 | ||
8d64371b | 9505 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9506 | |
9507 | if (forever) | |
74531fed PA |
9508 | timeout = watchdog > 0 ? watchdog : -1; |
9509 | else if (expecting_notif) | |
9510 | timeout = 0; /* There should already be a char in the buffer. If | |
9511 | not, bail out. */ | |
c906108c SS |
9512 | else |
9513 | timeout = remote_timeout; | |
9514 | ||
9515 | #define MAX_TRIES 3 | |
9516 | ||
74531fed PA |
9517 | /* Process any number of notifications, and then return when |
9518 | we get a packet. */ | |
9519 | for (;;) | |
c906108c | 9520 | { |
d9c43928 | 9521 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9522 | times. */ |
9523 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9524 | { |
74531fed PA |
9525 | /* This can loop forever if the remote side sends us |
9526 | characters continuously, but if it pauses, we'll get | |
9527 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9528 | we'll count that as a retry. | |
9529 | ||
9530 | Note that even when forever is set, we will only wait | |
9531 | forever prior to the start of a packet. After that, we | |
9532 | expect characters to arrive at a brisk pace. They should | |
9533 | show up within remote_timeout intervals. */ | |
9534 | do | |
9535 | c = readchar (timeout); | |
9536 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9537 | |
9538 | if (c == SERIAL_TIMEOUT) | |
9539 | { | |
74531fed PA |
9540 | if (expecting_notif) |
9541 | return -1; /* Don't complain, it's normal to not get | |
9542 | anything in this case. */ | |
9543 | ||
23860348 | 9544 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9545 | { |
78a095c3 | 9546 | remote_unpush_target (); |
598d3636 JK |
9547 | throw_error (TARGET_CLOSE_ERROR, |
9548 | _("Watchdog timeout has expired. " | |
9549 | "Target detached.")); | |
c906108c | 9550 | } |
c906108c | 9551 | if (remote_debug) |
0f71a2f6 | 9552 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9553 | } |
74531fed PA |
9554 | else |
9555 | { | |
9556 | /* We've found the start of a packet or notification. | |
9557 | Now collect the data. */ | |
8d64371b | 9558 | val = read_frame (buf); |
74531fed PA |
9559 | if (val >= 0) |
9560 | break; | |
9561 | } | |
9562 | ||
c33e31fd | 9563 | remote_serial_write ("-", 1); |
c906108c | 9564 | } |
c906108c | 9565 | |
74531fed PA |
9566 | if (tries > MAX_TRIES) |
9567 | { | |
9568 | /* We have tried hard enough, and just can't receive the | |
9569 | packet/notification. Give up. */ | |
9570 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9571 | |
74531fed PA |
9572 | /* Skip the ack char if we're in no-ack mode. */ |
9573 | if (!rs->noack_mode) | |
c33e31fd | 9574 | remote_serial_write ("+", 1); |
74531fed PA |
9575 | return -1; |
9576 | } | |
c906108c | 9577 | |
74531fed PA |
9578 | /* If we got an ordinary packet, return that to our caller. */ |
9579 | if (c == '$') | |
c906108c SS |
9580 | { |
9581 | if (remote_debug) | |
43e526b9 | 9582 | { |
6f8976bf | 9583 | std::string str |
8d64371b | 9584 | = escape_buffer (buf->data (), |
6f8976bf YQ |
9585 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); |
9586 | ||
9587 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9588 | str.c_str ()); | |
9589 | ||
567a3e54 SM |
9590 | if (val > REMOTE_DEBUG_MAX_CHAR) |
9591 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9592 | val - REMOTE_DEBUG_MAX_CHAR); | |
6e5abd65 | 9593 | |
6f8976bf | 9594 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9595 | } |
a6f3e723 SL |
9596 | |
9597 | /* Skip the ack char if we're in no-ack mode. */ | |
9598 | if (!rs->noack_mode) | |
c33e31fd | 9599 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9600 | if (is_notif != NULL) |
9601 | *is_notif = 0; | |
0876f84a | 9602 | return val; |
c906108c SS |
9603 | } |
9604 | ||
74531fed PA |
9605 | /* If we got a notification, handle it, and go back to looking |
9606 | for a packet. */ | |
9607 | else | |
9608 | { | |
9609 | gdb_assert (c == '%'); | |
9610 | ||
9611 | if (remote_debug) | |
9612 | { | |
8d64371b | 9613 | std::string str = escape_buffer (buf->data (), val); |
6e5abd65 | 9614 | |
6e5abd65 PA |
9615 | fprintf_unfiltered (gdb_stdlog, |
9616 | " Notification received: %s\n", | |
b3ced9ba | 9617 | str.c_str ()); |
74531fed | 9618 | } |
fee9eda9 YQ |
9619 | if (is_notif != NULL) |
9620 | *is_notif = 1; | |
c906108c | 9621 | |
8d64371b | 9622 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 9623 | |
74531fed | 9624 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9625 | |
74531fed | 9626 | if (expecting_notif) |
fee9eda9 | 9627 | return val; |
74531fed PA |
9628 | } |
9629 | } | |
9630 | } | |
9631 | ||
6b8edb51 | 9632 | int |
8d64371b | 9633 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 9634 | { |
8d64371b | 9635 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
9636 | } |
9637 | ||
6b8edb51 | 9638 | int |
8d64371b | 9639 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 9640 | int *is_notif) |
74531fed | 9641 | { |
8d64371b | 9642 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 9643 | } |
74531fed | 9644 | |
cbb8991c DB |
9645 | /* Kill any new fork children of process PID that haven't been |
9646 | processed by follow_fork. */ | |
9647 | ||
6b8edb51 PA |
9648 | void |
9649 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 9650 | { |
6b8edb51 | 9651 | remote_state *rs = get_remote_state (); |
cbb8991c | 9652 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
9653 | |
9654 | /* Kill the fork child threads of any threads in process PID | |
9655 | that are stopped at a fork event. */ | |
08036331 | 9656 | for (thread_info *thread : all_non_exited_threads ()) |
cbb8991c DB |
9657 | { |
9658 | struct target_waitstatus *ws = &thread->pending_follow; | |
9659 | ||
9660 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9661 | { | |
953edf2b | 9662 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
9663 | int res; |
9664 | ||
6b8edb51 | 9665 | res = remote_vkill (child_pid); |
cbb8991c DB |
9666 | if (res != 0) |
9667 | error (_("Can't kill fork child process %d"), child_pid); | |
9668 | } | |
9669 | } | |
9670 | ||
9671 | /* Check for any pending fork events (not reported or processed yet) | |
9672 | in process PID and kill those fork child threads as well. */ | |
9673 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
9674 | for (auto &event : rs->stop_reply_queue) |
9675 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
9676 | { | |
9677 | int child_pid = event->ws.value.related_pid.pid (); | |
9678 | int res; | |
9679 | ||
9680 | res = remote_vkill (child_pid); | |
9681 | if (res != 0) | |
9682 | error (_("Can't kill fork child process %d"), child_pid); | |
9683 | } | |
cbb8991c DB |
9684 | } |
9685 | ||
c906108c | 9686 | \f |
8020350c DB |
9687 | /* Target hook to kill the current inferior. */ |
9688 | ||
f6ac5f3d PA |
9689 | void |
9690 | remote_target::kill () | |
43ff13b4 | 9691 | { |
8020350c | 9692 | int res = -1; |
e99b03dc | 9693 | int pid = inferior_ptid.pid (); |
8020350c | 9694 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 9695 | |
8020350c | 9696 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9697 | { |
8020350c DB |
9698 | /* If we're stopped while forking and we haven't followed yet, |
9699 | kill the child task. We need to do this before killing the | |
9700 | parent task because if this is a vfork then the parent will | |
9701 | be sleeping. */ | |
6b8edb51 | 9702 | kill_new_fork_children (pid); |
8020350c | 9703 | |
6b8edb51 | 9704 | res = remote_vkill (pid); |
8020350c | 9705 | if (res == 0) |
0fdf84ca | 9706 | { |
bc1e6c81 | 9707 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9708 | return; |
9709 | } | |
8020350c | 9710 | } |
0fdf84ca | 9711 | |
8020350c DB |
9712 | /* If we are in 'target remote' mode and we are killing the only |
9713 | inferior, then we will tell gdbserver to exit and unpush the | |
9714 | target. */ | |
9715 | if (res == -1 && !remote_multi_process_p (rs) | |
9716 | && number_of_live_inferiors () == 1) | |
9717 | { | |
9718 | remote_kill_k (); | |
9719 | ||
9720 | /* We've killed the remote end, we get to mourn it. If we are | |
9721 | not in extended mode, mourning the inferior also unpushes | |
9722 | remote_ops from the target stack, which closes the remote | |
9723 | connection. */ | |
bc1e6c81 | 9724 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9725 | |
9726 | return; | |
0fdf84ca | 9727 | } |
43ff13b4 | 9728 | |
8020350c | 9729 | error (_("Can't kill process")); |
43ff13b4 JM |
9730 | } |
9731 | ||
8020350c DB |
9732 | /* Send a kill request to the target using the 'vKill' packet. */ |
9733 | ||
6b8edb51 PA |
9734 | int |
9735 | remote_target::remote_vkill (int pid) | |
82f73884 | 9736 | { |
4082afcc | 9737 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9738 | return -1; |
9739 | ||
6b8edb51 PA |
9740 | remote_state *rs = get_remote_state (); |
9741 | ||
82f73884 | 9742 | /* Tell the remote target to detach. */ |
8d64371b | 9743 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 9744 | putpkt (rs->buf); |
8d64371b | 9745 | getpkt (&rs->buf, 0); |
82f73884 | 9746 | |
4082afcc PA |
9747 | switch (packet_ok (rs->buf, |
9748 | &remote_protocol_packets[PACKET_vKill])) | |
9749 | { | |
9750 | case PACKET_OK: | |
9751 | return 0; | |
9752 | case PACKET_ERROR: | |
9753 | return 1; | |
9754 | case PACKET_UNKNOWN: | |
9755 | return -1; | |
9756 | default: | |
9757 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9758 | } | |
82f73884 PA |
9759 | } |
9760 | ||
8020350c DB |
9761 | /* Send a kill request to the target using the 'k' packet. */ |
9762 | ||
6b8edb51 PA |
9763 | void |
9764 | remote_target::remote_kill_k () | |
82f73884 | 9765 | { |
8020350c DB |
9766 | /* Catch errors so the user can quit from gdb even when we |
9767 | aren't on speaking terms with the remote system. */ | |
9768 | TRY | |
82f73884 | 9769 | { |
82f73884 | 9770 | putpkt ("k"); |
82f73884 | 9771 | } |
8020350c DB |
9772 | CATCH (ex, RETURN_MASK_ERROR) |
9773 | { | |
9774 | if (ex.error == TARGET_CLOSE_ERROR) | |
9775 | { | |
9776 | /* If we got an (EOF) error that caused the target | |
9777 | to go away, then we're done, that's what we wanted. | |
9778 | "k" is susceptible to cause a premature EOF, given | |
9779 | that the remote server isn't actually required to | |
9780 | reply to "k", and it can happen that it doesn't | |
9781 | even get to reply ACK to the "k". */ | |
9782 | return; | |
9783 | } | |
82f73884 | 9784 | |
8020350c DB |
9785 | /* Otherwise, something went wrong. We didn't actually kill |
9786 | the target. Just propagate the exception, and let the | |
9787 | user or higher layers decide what to do. */ | |
9788 | throw_exception (ex); | |
9789 | } | |
9790 | END_CATCH | |
82f73884 PA |
9791 | } |
9792 | ||
f6ac5f3d PA |
9793 | void |
9794 | remote_target::mourn_inferior () | |
c906108c | 9795 | { |
8020350c | 9796 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9797 | |
9607784a PA |
9798 | /* We're no longer interested in notification events of an inferior |
9799 | that exited or was killed/detached. */ | |
9800 | discard_pending_stop_replies (current_inferior ()); | |
9801 | ||
8020350c DB |
9802 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9803 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9804 | { | |
f6ac5f3d | 9805 | unpush_target (this); |
c906108c | 9806 | |
8020350c DB |
9807 | /* remote_close takes care of doing most of the clean up. */ |
9808 | generic_mourn_inferior (); | |
9809 | return; | |
9810 | } | |
c906108c | 9811 | |
e24a49d8 PA |
9812 | /* In case we got here due to an error, but we're going to stay |
9813 | connected. */ | |
9814 | rs->waiting_for_stop_reply = 0; | |
9815 | ||
dc1981d7 PA |
9816 | /* If the current general thread belonged to the process we just |
9817 | detached from or has exited, the remote side current general | |
9818 | thread becomes undefined. Considering a case like this: | |
9819 | ||
9820 | - We just got here due to a detach. | |
9821 | - The process that we're detaching from happens to immediately | |
9822 | report a global breakpoint being hit in non-stop mode, in the | |
9823 | same thread we had selected before. | |
9824 | - GDB attaches to this process again. | |
9825 | - This event happens to be the next event we handle. | |
9826 | ||
9827 | GDB would consider that the current general thread didn't need to | |
9828 | be set on the stub side (with Hg), since for all it knew, | |
9829 | GENERAL_THREAD hadn't changed. | |
9830 | ||
9831 | Notice that although in all-stop mode, the remote server always | |
9832 | sets the current thread to the thread reporting the stop event, | |
9833 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9834 | not* change the current thread when reporting a breakpoint hit, | |
9835 | due to the decoupling of event reporting and event handling. | |
9836 | ||
9837 | To keep things simple, we always invalidate our notion of the | |
9838 | current thread. */ | |
47f8a51d | 9839 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9840 | |
8020350c | 9841 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9842 | generic_mourn_inferior (); |
9843 | ||
d729566a | 9844 | if (!have_inferiors ()) |
2d717e4f | 9845 | { |
82f73884 PA |
9846 | if (!remote_multi_process_p (rs)) |
9847 | { | |
9848 | /* Check whether the target is running now - some remote stubs | |
9849 | automatically restart after kill. */ | |
9850 | putpkt ("?"); | |
8d64371b | 9851 | getpkt (&rs->buf, 0); |
82f73884 PA |
9852 | |
9853 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9854 | { | |
3e43a32a MS |
9855 | /* Assume that the target has been restarted. Set |
9856 | inferior_ptid so that bits of core GDB realizes | |
9857 | there's something here, e.g., so that the user can | |
9858 | say "kill" again. */ | |
82f73884 PA |
9859 | inferior_ptid = magic_null_ptid; |
9860 | } | |
82f73884 | 9861 | } |
2d717e4f DJ |
9862 | } |
9863 | } | |
c906108c | 9864 | |
57810aa7 | 9865 | bool |
f6ac5f3d | 9866 | extended_remote_target::supports_disable_randomization () |
03583c20 | 9867 | { |
4082afcc | 9868 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9869 | } |
9870 | ||
6b8edb51 PA |
9871 | void |
9872 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
9873 | { |
9874 | struct remote_state *rs = get_remote_state (); | |
9875 | char *reply; | |
9876 | ||
8d64371b TT |
9877 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
9878 | "QDisableRandomization:%x", val); | |
03583c20 | 9879 | putpkt (rs->buf); |
b6bb3468 | 9880 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9881 | if (*reply == '\0') |
9882 | error (_("Target does not support QDisableRandomization.")); | |
9883 | if (strcmp (reply, "OK") != 0) | |
9884 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9885 | } | |
9886 | ||
6b8edb51 PA |
9887 | int |
9888 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
9889 | { |
9890 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9891 | int len; |
94585166 | 9892 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9893 | |
2d717e4f DJ |
9894 | /* If the user has disabled vRun support, or we have detected that |
9895 | support is not available, do not try it. */ | |
4082afcc | 9896 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9897 | return -1; |
424163ea | 9898 | |
8d64371b TT |
9899 | strcpy (rs->buf.data (), "vRun;"); |
9900 | len = strlen (rs->buf.data ()); | |
c906108c | 9901 | |
2d717e4f DJ |
9902 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9903 | error (_("Remote file name too long for run packet")); | |
8d64371b | 9904 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 9905 | strlen (remote_exec_file)); |
2d717e4f | 9906 | |
7c5ded6a | 9907 | if (!args.empty ()) |
2d717e4f | 9908 | { |
2d717e4f | 9909 | int i; |
2d717e4f | 9910 | |
773a1edc | 9911 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9912 | for (i = 0; argv[i] != NULL; i++) |
9913 | { | |
9914 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9915 | error (_("Argument list too long for run packet")); | |
9916 | rs->buf[len++] = ';'; | |
8d64371b | 9917 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 9918 | strlen (argv[i])); |
2d717e4f | 9919 | } |
2d717e4f DJ |
9920 | } |
9921 | ||
9922 | rs->buf[len++] = '\0'; | |
9923 | ||
9924 | putpkt (rs->buf); | |
8d64371b | 9925 | getpkt (&rs->buf, 0); |
2d717e4f | 9926 | |
4082afcc | 9927 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9928 | { |
4082afcc | 9929 | case PACKET_OK: |
3405876a | 9930 | /* We have a wait response. All is well. */ |
2d717e4f | 9931 | return 0; |
4082afcc PA |
9932 | case PACKET_UNKNOWN: |
9933 | return -1; | |
9934 | case PACKET_ERROR: | |
2d717e4f DJ |
9935 | if (remote_exec_file[0] == '\0') |
9936 | error (_("Running the default executable on the remote target failed; " | |
9937 | "try \"set remote exec-file\"?")); | |
9938 | else | |
9939 | error (_("Running \"%s\" on the remote target failed"), | |
9940 | remote_exec_file); | |
4082afcc PA |
9941 | default: |
9942 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9943 | } |
c906108c SS |
9944 | } |
9945 | ||
0a2dde4a SDJ |
9946 | /* Helper function to send set/unset environment packets. ACTION is |
9947 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9948 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9949 | sent. */ | |
9950 | ||
6b8edb51 PA |
9951 | void |
9952 | remote_target::send_environment_packet (const char *action, | |
9953 | const char *packet, | |
9954 | const char *value) | |
0a2dde4a | 9955 | { |
6b8edb51 PA |
9956 | remote_state *rs = get_remote_state (); |
9957 | ||
0a2dde4a SDJ |
9958 | /* Convert the environment variable to an hex string, which |
9959 | is the best format to be transmitted over the wire. */ | |
9960 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9961 | strlen (value)); | |
9962 | ||
8d64371b | 9963 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
9964 | "%s:%s", packet, encoded_value.c_str ()); |
9965 | ||
9966 | putpkt (rs->buf); | |
8d64371b TT |
9967 | getpkt (&rs->buf, 0); |
9968 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
9969 | warning (_("Unable to %s environment variable '%s' on remote."), |
9970 | action, value); | |
9971 | } | |
9972 | ||
9973 | /* Helper function to handle the QEnvironment* packets. */ | |
9974 | ||
6b8edb51 PA |
9975 | void |
9976 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 9977 | { |
6b8edb51 PA |
9978 | remote_state *rs = get_remote_state (); |
9979 | ||
0a2dde4a SDJ |
9980 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
9981 | { | |
9982 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
9983 | getpkt (&rs->buf, 0); |
9984 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
9985 | warning (_("Unable to reset environment on remote.")); |
9986 | } | |
9987 | ||
9988 | gdb_environ *e = ¤t_inferior ()->environment; | |
9989 | ||
9990 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9991 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 9992 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
9993 | el.c_str ()); |
9994 | ||
9995 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9996 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 9997 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
9998 | } |
9999 | ||
bc3b087d SDJ |
10000 | /* Helper function to set the current working directory for the |
10001 | inferior in the remote target. */ | |
10002 | ||
6b8edb51 PA |
10003 | void |
10004 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10005 | { |
10006 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10007 | { | |
10008 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10009 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10010 | |
10011 | if (inferior_cwd != NULL) | |
10012 | { | |
10013 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10014 | strlen (inferior_cwd)); | |
10015 | ||
8d64371b | 10016 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10017 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10018 | } | |
10019 | else | |
10020 | { | |
10021 | /* An empty inferior_cwd means that the user wants us to | |
10022 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10023 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10024 | "QSetWorkingDir:"); |
10025 | } | |
10026 | ||
10027 | putpkt (rs->buf); | |
8d64371b | 10028 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10029 | if (packet_ok (rs->buf, |
10030 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10031 | != PACKET_OK) | |
10032 | error (_("\ | |
10033 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10034 | directory: %s"), | |
8d64371b | 10035 | rs->buf.data ()); |
bc3b087d SDJ |
10036 | |
10037 | } | |
10038 | } | |
10039 | ||
2d717e4f DJ |
10040 | /* In the extended protocol we want to be able to do things like |
10041 | "run" and have them basically work as expected. So we need | |
10042 | a special create_inferior function. We support changing the | |
10043 | executable file and the command line arguments, but not the | |
10044 | environment. */ | |
10045 | ||
f6ac5f3d PA |
10046 | void |
10047 | extended_remote_target::create_inferior (const char *exec_file, | |
10048 | const std::string &args, | |
10049 | char **env, int from_tty) | |
43ff13b4 | 10050 | { |
3405876a PA |
10051 | int run_worked; |
10052 | char *stop_reply; | |
10053 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10054 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10055 | |
43ff13b4 | 10056 | /* If running asynchronously, register the target file descriptor |
23860348 | 10057 | with the event loop. */ |
75c99385 | 10058 | if (target_can_async_p ()) |
6a3753b3 | 10059 | target_async (1); |
43ff13b4 | 10060 | |
03583c20 | 10061 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10062 | if (supports_disable_randomization ()) |
03583c20 UW |
10063 | extended_remote_disable_randomization (disable_randomization); |
10064 | ||
aefd8b33 SDJ |
10065 | /* If startup-with-shell is on, we inform gdbserver to start the |
10066 | remote inferior using a shell. */ | |
10067 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10068 | { | |
8d64371b | 10069 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10070 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10071 | putpkt (rs->buf); | |
8d64371b TT |
10072 | getpkt (&rs->buf, 0); |
10073 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10074 | error (_("\ |
10075 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10076 | rs->buf.data ()); |
aefd8b33 SDJ |
10077 | } |
10078 | ||
6b8edb51 | 10079 | extended_remote_environment_support (); |
0a2dde4a | 10080 | |
6b8edb51 | 10081 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10082 | |
43ff13b4 | 10083 | /* Now restart the remote server. */ |
3405876a PA |
10084 | run_worked = extended_remote_run (args) != -1; |
10085 | if (!run_worked) | |
2d717e4f DJ |
10086 | { |
10087 | /* vRun was not supported. Fail if we need it to do what the | |
10088 | user requested. */ | |
10089 | if (remote_exec_file[0]) | |
10090 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10091 | if (!args.empty ()) |
65e65158 | 10092 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10093 | |
2d717e4f DJ |
10094 | /* Fall back to "R". */ |
10095 | extended_remote_restart (); | |
10096 | } | |
424163ea | 10097 | |
3405876a | 10098 | /* vRun's success return is a stop reply. */ |
8d64371b | 10099 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10100 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10101 | |
2d717e4f DJ |
10102 | /* Get updated offsets, if the stub uses qOffsets. */ |
10103 | get_offsets (); | |
2d717e4f | 10104 | } |
c906108c | 10105 | \f |
c5aa993b | 10106 | |
b775012e LM |
10107 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10108 | the list of conditions (in agent expression bytecode format), if any, the | |
10109 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10110 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10111 | |
10112 | static int | |
10113 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10114 | struct bp_target_info *bp_tgt, char *buf, |
10115 | char *buf_end) | |
b775012e | 10116 | { |
3cde5c42 | 10117 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10118 | return 0; |
10119 | ||
10120 | buf += strlen (buf); | |
bba74b36 | 10121 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10122 | buf++; |
10123 | ||
83621223 | 10124 | /* Send conditions to the target. */ |
d538e36d | 10125 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10126 | { |
bba74b36 | 10127 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10128 | buf += strlen (buf); |
3cde5c42 | 10129 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10130 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10131 | *buf = '\0'; | |
10132 | } | |
b775012e LM |
10133 | return 0; |
10134 | } | |
10135 | ||
d3ce09f5 SS |
10136 | static void |
10137 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10138 | struct bp_target_info *bp_tgt, char *buf) | |
10139 | { | |
3cde5c42 | 10140 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10141 | return; |
10142 | ||
10143 | buf += strlen (buf); | |
10144 | ||
10145 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10146 | buf += strlen (buf); | |
10147 | ||
10148 | /* Concatenate all the agent expressions that are commands into the | |
10149 | cmds parameter. */ | |
df97be55 | 10150 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10151 | { |
10152 | sprintf (buf, "X%x,", aexpr->len); | |
10153 | buf += strlen (buf); | |
3cde5c42 | 10154 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10155 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10156 | *buf = '\0'; | |
10157 | } | |
d3ce09f5 SS |
10158 | } |
10159 | ||
8181d85f DJ |
10160 | /* Insert a breakpoint. On targets that have software breakpoint |
10161 | support, we ask the remote target to do the work; on targets | |
10162 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10163 | |
f6ac5f3d PA |
10164 | int |
10165 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10166 | struct bp_target_info *bp_tgt) | |
c906108c | 10167 | { |
d471ea57 AC |
10168 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10169 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10170 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10171 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10172 | |
4082afcc | 10173 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10174 | { |
0d5ed153 | 10175 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10176 | struct remote_state *rs; |
bba74b36 | 10177 | char *p, *endbuf; |
4fff2411 | 10178 | |
28439a30 PA |
10179 | /* Make sure the remote is pointing at the right process, if |
10180 | necessary. */ | |
10181 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10182 | set_general_process (); | |
10183 | ||
4fff2411 | 10184 | rs = get_remote_state (); |
8d64371b TT |
10185 | p = rs->buf.data (); |
10186 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10187 | |
96baa820 JM |
10188 | *(p++) = 'Z'; |
10189 | *(p++) = '0'; | |
10190 | *(p++) = ','; | |
7c0f6dcc | 10191 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10192 | p += hexnumstr (p, addr); |
579c6ad9 | 10193 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10194 | |
f6ac5f3d | 10195 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10196 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10197 | |
f6ac5f3d | 10198 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10199 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10200 | ||
6d820c5c | 10201 | putpkt (rs->buf); |
8d64371b | 10202 | getpkt (&rs->buf, 0); |
96baa820 | 10203 | |
6d820c5c | 10204 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10205 | { |
d471ea57 AC |
10206 | case PACKET_ERROR: |
10207 | return -1; | |
10208 | case PACKET_OK: | |
10209 | return 0; | |
10210 | case PACKET_UNKNOWN: | |
10211 | break; | |
96baa820 JM |
10212 | } |
10213 | } | |
c906108c | 10214 | |
0000e5cc PA |
10215 | /* If this breakpoint has target-side commands but this stub doesn't |
10216 | support Z0 packets, throw error. */ | |
3cde5c42 | 10217 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10218 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10219 | Target doesn't support breakpoints that have target side commands.")); | |
10220 | ||
f6ac5f3d | 10221 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10222 | } |
10223 | ||
f6ac5f3d PA |
10224 | int |
10225 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10226 | struct bp_target_info *bp_tgt, | |
10227 | enum remove_bp_reason reason) | |
c906108c | 10228 | { |
8181d85f | 10229 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10230 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10231 | |
4082afcc | 10232 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10233 | { |
8d64371b TT |
10234 | char *p = rs->buf.data (); |
10235 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10236 | |
28439a30 PA |
10237 | /* Make sure the remote is pointing at the right process, if |
10238 | necessary. */ | |
10239 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10240 | set_general_process (); | |
10241 | ||
96baa820 JM |
10242 | *(p++) = 'z'; |
10243 | *(p++) = '0'; | |
10244 | *(p++) = ','; | |
10245 | ||
8181d85f DJ |
10246 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10247 | p += hexnumstr (p, addr); | |
579c6ad9 | 10248 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10249 | |
6d820c5c | 10250 | putpkt (rs->buf); |
8d64371b | 10251 | getpkt (&rs->buf, 0); |
96baa820 | 10252 | |
6d820c5c | 10253 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10254 | } |
10255 | ||
f6ac5f3d | 10256 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10257 | } |
10258 | ||
f486487f | 10259 | static enum Z_packet_type |
d471ea57 AC |
10260 | watchpoint_to_Z_packet (int type) |
10261 | { | |
10262 | switch (type) | |
10263 | { | |
10264 | case hw_write: | |
bb858e6a | 10265 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10266 | break; |
10267 | case hw_read: | |
bb858e6a | 10268 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10269 | break; |
10270 | case hw_access: | |
bb858e6a | 10271 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10272 | break; |
10273 | default: | |
8e65ff28 | 10274 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10275 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10276 | } |
10277 | } | |
10278 | ||
f6ac5f3d PA |
10279 | int |
10280 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10281 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10282 | { |
d01949b6 | 10283 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10284 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10285 | char *p; |
d471ea57 | 10286 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10287 | |
4082afcc | 10288 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10289 | return 1; |
802188a7 | 10290 | |
28439a30 PA |
10291 | /* Make sure the remote is pointing at the right process, if |
10292 | necessary. */ | |
10293 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10294 | set_general_process (); | |
10295 | ||
8d64371b TT |
10296 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10297 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10298 | addr = remote_address_masked (addr); |
10299 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10300 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10301 | |
6d820c5c | 10302 | putpkt (rs->buf); |
8d64371b | 10303 | getpkt (&rs->buf, 0); |
96baa820 | 10304 | |
6d820c5c | 10305 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10306 | { |
10307 | case PACKET_ERROR: | |
d471ea57 | 10308 | return -1; |
85d721b8 PA |
10309 | case PACKET_UNKNOWN: |
10310 | return 1; | |
d471ea57 AC |
10311 | case PACKET_OK: |
10312 | return 0; | |
10313 | } | |
8e65ff28 | 10314 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10315 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10316 | } |
10317 | ||
57810aa7 | 10318 | bool |
f6ac5f3d PA |
10319 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10320 | CORE_ADDR start, int length) | |
283002cf MR |
10321 | { |
10322 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10323 | ||
10324 | return diff < length; | |
10325 | } | |
10326 | ||
d471ea57 | 10327 | |
f6ac5f3d PA |
10328 | int |
10329 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10330 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10331 | { |
d01949b6 | 10332 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10333 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10334 | char *p; |
d471ea57 AC |
10335 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10336 | ||
4082afcc | 10337 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10338 | return -1; |
802188a7 | 10339 | |
28439a30 PA |
10340 | /* Make sure the remote is pointing at the right process, if |
10341 | necessary. */ | |
10342 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10343 | set_general_process (); | |
10344 | ||
8d64371b TT |
10345 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10346 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10347 | addr = remote_address_masked (addr); |
10348 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10349 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10350 | putpkt (rs->buf); |
8d64371b | 10351 | getpkt (&rs->buf, 0); |
96baa820 | 10352 | |
6d820c5c | 10353 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10354 | { |
10355 | case PACKET_ERROR: | |
10356 | case PACKET_UNKNOWN: | |
10357 | return -1; | |
10358 | case PACKET_OK: | |
10359 | return 0; | |
10360 | } | |
8e65ff28 | 10361 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10362 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10363 | } |
10364 | ||
3c3bea1c | 10365 | |
501eef12 | 10366 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 10367 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 10368 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 10369 | |
f6ac5f3d PA |
10370 | int |
10371 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10372 | { |
10373 | if (remote_hw_watchpoint_length_limit == 0) | |
10374 | return 0; | |
10375 | else if (remote_hw_watchpoint_length_limit < 0) | |
10376 | return 1; | |
10377 | else if (len <= remote_hw_watchpoint_length_limit) | |
10378 | return 1; | |
10379 | else | |
10380 | return 0; | |
10381 | } | |
10382 | ||
f6ac5f3d PA |
10383 | int |
10384 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10385 | { |
3c3bea1c GS |
10386 | if (type == bp_hardware_breakpoint) |
10387 | { | |
10388 | if (remote_hw_breakpoint_limit == 0) | |
10389 | return 0; | |
501eef12 AC |
10390 | else if (remote_hw_breakpoint_limit < 0) |
10391 | return 1; | |
3c3bea1c GS |
10392 | else if (cnt <= remote_hw_breakpoint_limit) |
10393 | return 1; | |
10394 | } | |
10395 | else | |
10396 | { | |
10397 | if (remote_hw_watchpoint_limit == 0) | |
10398 | return 0; | |
501eef12 AC |
10399 | else if (remote_hw_watchpoint_limit < 0) |
10400 | return 1; | |
3c3bea1c GS |
10401 | else if (ot) |
10402 | return -1; | |
10403 | else if (cnt <= remote_hw_watchpoint_limit) | |
10404 | return 1; | |
10405 | } | |
10406 | return -1; | |
10407 | } | |
10408 | ||
f7e6eed5 PA |
10409 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10410 | ||
57810aa7 | 10411 | bool |
f6ac5f3d | 10412 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10413 | { |
799a2abe | 10414 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10415 | |
799a2abe | 10416 | return (thread->priv != NULL |
7aabaf9d SM |
10417 | && (get_remote_thread_info (thread)->stop_reason |
10418 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10419 | } |
10420 | ||
10421 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10422 | remote. */ | |
10423 | ||
57810aa7 | 10424 | bool |
f6ac5f3d | 10425 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10426 | { |
f7e6eed5 PA |
10427 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10428 | } | |
10429 | ||
10430 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10431 | ||
57810aa7 | 10432 | bool |
f6ac5f3d | 10433 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10434 | { |
799a2abe | 10435 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10436 | |
799a2abe | 10437 | return (thread->priv != NULL |
7aabaf9d SM |
10438 | && (get_remote_thread_info (thread)->stop_reason |
10439 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10440 | } |
10441 | ||
10442 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10443 | remote. */ | |
10444 | ||
57810aa7 | 10445 | bool |
f6ac5f3d | 10446 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10447 | { |
f7e6eed5 PA |
10448 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10449 | } | |
10450 | ||
57810aa7 | 10451 | bool |
f6ac5f3d | 10452 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10453 | { |
799a2abe | 10454 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10455 | |
799a2abe | 10456 | return (thread->priv != NULL |
7aabaf9d SM |
10457 | && (get_remote_thread_info (thread)->stop_reason |
10458 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10459 | } |
10460 | ||
57810aa7 | 10461 | bool |
f6ac5f3d | 10462 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10463 | { |
799a2abe | 10464 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10465 | |
799a2abe | 10466 | if (thread->priv != NULL |
7aabaf9d SM |
10467 | && (get_remote_thread_info (thread)->stop_reason |
10468 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10469 | { |
7aabaf9d | 10470 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10471 | return true; |
4aa7a7f5 JJ |
10472 | } |
10473 | ||
57810aa7 | 10474 | return false; |
3c3bea1c GS |
10475 | } |
10476 | ||
10477 | ||
f6ac5f3d PA |
10478 | int |
10479 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10480 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10481 | { |
0d5ed153 | 10482 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10483 | struct remote_state *rs; |
bba74b36 | 10484 | char *p, *endbuf; |
dd61ec5c | 10485 | char *message; |
3c3bea1c | 10486 | |
4082afcc | 10487 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10488 | return -1; |
2bc416ba | 10489 | |
28439a30 PA |
10490 | /* Make sure the remote is pointing at the right process, if |
10491 | necessary. */ | |
10492 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10493 | set_general_process (); | |
10494 | ||
4fff2411 | 10495 | rs = get_remote_state (); |
8d64371b TT |
10496 | p = rs->buf.data (); |
10497 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10498 | |
96baa820 JM |
10499 | *(p++) = 'Z'; |
10500 | *(p++) = '1'; | |
10501 | *(p++) = ','; | |
802188a7 | 10502 | |
0d5ed153 | 10503 | addr = remote_address_masked (addr); |
96baa820 | 10504 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10505 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10506 | |
f6ac5f3d | 10507 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10508 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10509 | |
f6ac5f3d | 10510 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10511 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10512 | ||
6d820c5c | 10513 | putpkt (rs->buf); |
8d64371b | 10514 | getpkt (&rs->buf, 0); |
96baa820 | 10515 | |
6d820c5c | 10516 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10517 | { |
10518 | case PACKET_ERROR: | |
dd61ec5c MW |
10519 | if (rs->buf[1] == '.') |
10520 | { | |
8d64371b | 10521 | message = strchr (&rs->buf[2], '.'); |
dd61ec5c | 10522 | if (message) |
0316657e | 10523 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10524 | } |
10525 | return -1; | |
d471ea57 AC |
10526 | case PACKET_UNKNOWN: |
10527 | return -1; | |
10528 | case PACKET_OK: | |
10529 | return 0; | |
10530 | } | |
8e65ff28 | 10531 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10532 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10533 | } |
10534 | ||
d471ea57 | 10535 | |
f6ac5f3d PA |
10536 | int |
10537 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10538 | struct bp_target_info *bp_tgt) | |
96baa820 | 10539 | { |
8181d85f | 10540 | CORE_ADDR addr; |
d01949b6 | 10541 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10542 | char *p = rs->buf.data (); |
10543 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10544 | |
4082afcc | 10545 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10546 | return -1; |
802188a7 | 10547 | |
28439a30 PA |
10548 | /* Make sure the remote is pointing at the right process, if |
10549 | necessary. */ | |
10550 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10551 | set_general_process (); | |
10552 | ||
96baa820 JM |
10553 | *(p++) = 'z'; |
10554 | *(p++) = '1'; | |
10555 | *(p++) = ','; | |
802188a7 | 10556 | |
8181d85f | 10557 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10558 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10559 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10560 | |
6d820c5c | 10561 | putpkt (rs->buf); |
8d64371b | 10562 | getpkt (&rs->buf, 0); |
802188a7 | 10563 | |
6d820c5c | 10564 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10565 | { |
10566 | case PACKET_ERROR: | |
10567 | case PACKET_UNKNOWN: | |
10568 | return -1; | |
10569 | case PACKET_OK: | |
10570 | return 0; | |
10571 | } | |
8e65ff28 | 10572 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10573 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10574 | } |
96baa820 | 10575 | |
4a5e7a5b PA |
10576 | /* Verify memory using the "qCRC:" request. */ |
10577 | ||
f6ac5f3d PA |
10578 | int |
10579 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10580 | { |
10581 | struct remote_state *rs = get_remote_state (); | |
10582 | unsigned long host_crc, target_crc; | |
10583 | char *tmp; | |
10584 | ||
936d2992 PA |
10585 | /* It doesn't make sense to use qCRC if the remote target is |
10586 | connected but not running. */ | |
10587 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10588 | { | |
10589 | enum packet_result result; | |
28439a30 | 10590 | |
936d2992 PA |
10591 | /* Make sure the remote is pointing at the right process. */ |
10592 | set_general_process (); | |
4a5e7a5b | 10593 | |
936d2992 | 10594 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10595 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10596 | (long) lma, (long) size); |
10597 | putpkt (rs->buf); | |
4a5e7a5b | 10598 | |
936d2992 PA |
10599 | /* Be clever; compute the host_crc before waiting for target |
10600 | reply. */ | |
10601 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10602 | ||
8d64371b | 10603 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10604 | |
936d2992 PA |
10605 | result = packet_ok (rs->buf, |
10606 | &remote_protocol_packets[PACKET_qCRC]); | |
10607 | if (result == PACKET_ERROR) | |
10608 | return -1; | |
10609 | else if (result == PACKET_OK) | |
10610 | { | |
10611 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10612 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10613 | |
936d2992 PA |
10614 | return (host_crc == target_crc); |
10615 | } | |
10616 | } | |
4a5e7a5b | 10617 | |
f6ac5f3d | 10618 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10619 | } |
10620 | ||
c906108c SS |
10621 | /* compare-sections command |
10622 | ||
10623 | With no arguments, compares each loadable section in the exec bfd | |
10624 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10625 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10626 | |
c906108c | 10627 | static void |
ac88e2de | 10628 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10629 | { |
10630 | asection *s; | |
ce359b09 | 10631 | const char *sectname; |
c906108c SS |
10632 | bfd_size_type size; |
10633 | bfd_vma lma; | |
10634 | int matched = 0; | |
10635 | int mismatched = 0; | |
4a5e7a5b | 10636 | int res; |
95cf3b38 | 10637 | int read_only = 0; |
c906108c SS |
10638 | |
10639 | if (!exec_bfd) | |
8a3fe4f8 | 10640 | error (_("command cannot be used without an exec file")); |
c906108c | 10641 | |
95cf3b38 DT |
10642 | if (args != NULL && strcmp (args, "-r") == 0) |
10643 | { | |
10644 | read_only = 1; | |
10645 | args = NULL; | |
10646 | } | |
10647 | ||
c5aa993b | 10648 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10649 | { |
10650 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10651 | continue; /* Skip non-loadable section. */ |
c906108c | 10652 | |
95cf3b38 DT |
10653 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10654 | continue; /* Skip writeable sections */ | |
10655 | ||
2c500098 | 10656 | size = bfd_get_section_size (s); |
c906108c | 10657 | if (size == 0) |
0df8b418 | 10658 | continue; /* Skip zero-length section. */ |
c906108c | 10659 | |
ce359b09 | 10660 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10661 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10662 | continue; /* Not the section selected by user. */ |
c906108c | 10663 | |
0df8b418 | 10664 | matched = 1; /* Do this section. */ |
c906108c | 10665 | lma = s->lma; |
c906108c | 10666 | |
b80406ac TT |
10667 | gdb::byte_vector sectdata (size); |
10668 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10669 | |
b80406ac | 10670 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10671 | |
10672 | if (res == -1) | |
5af949e3 | 10673 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10674 | paddress (target_gdbarch (), lma), |
10675 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10676 | |
5af949e3 | 10677 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10678 | paddress (target_gdbarch (), lma), |
10679 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10680 | if (res) |
c906108c SS |
10681 | printf_filtered ("matched.\n"); |
10682 | else | |
c5aa993b JM |
10683 | { |
10684 | printf_filtered ("MIS-MATCHED!\n"); | |
10685 | mismatched++; | |
10686 | } | |
c906108c SS |
10687 | } |
10688 | if (mismatched > 0) | |
936d2992 | 10689 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10690 | the loaded file\n")); |
c906108c | 10691 | if (args && !matched) |
a3f17187 | 10692 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10693 | } |
10694 | ||
0e7f50da UW |
10695 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10696 | into remote target. The number of bytes written to the remote | |
10697 | target is returned, or -1 for error. */ | |
10698 | ||
6b8edb51 PA |
10699 | target_xfer_status |
10700 | remote_target::remote_write_qxfer (const char *object_name, | |
10701 | const char *annex, const gdb_byte *writebuf, | |
10702 | ULONGEST offset, LONGEST len, | |
10703 | ULONGEST *xfered_len, | |
10704 | struct packet_config *packet) | |
0e7f50da UW |
10705 | { |
10706 | int i, buf_len; | |
10707 | ULONGEST n; | |
0e7f50da UW |
10708 | struct remote_state *rs = get_remote_state (); |
10709 | int max_size = get_memory_write_packet_size (); | |
10710 | ||
7cc244de | 10711 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10712 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10713 | |
10714 | /* Insert header. */ | |
8d64371b | 10715 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
10716 | "qXfer:%s:write:%s:%s:", |
10717 | object_name, annex ? annex : "", | |
10718 | phex_nz (offset, sizeof offset)); | |
10719 | max_size -= (i + 1); | |
10720 | ||
10721 | /* Escape as much data as fits into rs->buf. */ | |
10722 | buf_len = remote_escape_output | |
8d64371b | 10723 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 10724 | |
8d64371b TT |
10725 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
10726 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 10727 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10728 | return TARGET_XFER_E_IO; |
0e7f50da | 10729 | |
8d64371b | 10730 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
10731 | |
10732 | *xfered_len = n; | |
92ffd475 | 10733 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10734 | } |
10735 | ||
0876f84a DJ |
10736 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10737 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10738 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10739 | The number of bytes read may be less than LEN without indicating an | |
10740 | EOF. PACKET is checked and updated to indicate whether the remote | |
10741 | target supports this object. */ | |
10742 | ||
6b8edb51 PA |
10743 | target_xfer_status |
10744 | remote_target::remote_read_qxfer (const char *object_name, | |
10745 | const char *annex, | |
10746 | gdb_byte *readbuf, ULONGEST offset, | |
10747 | LONGEST len, | |
10748 | ULONGEST *xfered_len, | |
10749 | struct packet_config *packet) | |
0876f84a | 10750 | { |
0876f84a | 10751 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10752 | LONGEST i, n, packet_len; |
10753 | ||
7cc244de | 10754 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10755 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10756 | |
10757 | /* Check whether we've cached an end-of-object packet that matches | |
10758 | this request. */ | |
8e88304f | 10759 | if (rs->finished_object) |
0876f84a | 10760 | { |
8e88304f TT |
10761 | if (strcmp (object_name, rs->finished_object) == 0 |
10762 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10763 | && offset == rs->finished_offset) | |
9b409511 YQ |
10764 | return TARGET_XFER_EOF; |
10765 | ||
0876f84a DJ |
10766 | |
10767 | /* Otherwise, we're now reading something different. Discard | |
10768 | the cache. */ | |
8e88304f TT |
10769 | xfree (rs->finished_object); |
10770 | xfree (rs->finished_annex); | |
10771 | rs->finished_object = NULL; | |
10772 | rs->finished_annex = NULL; | |
0876f84a DJ |
10773 | } |
10774 | ||
10775 | /* Request only enough to fit in a single packet. The actual data | |
10776 | may not, since we don't know how much of it will need to be escaped; | |
10777 | the target is free to respond with slightly less data. We subtract | |
10778 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10779 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
10780 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
10781 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
10782 | object_name, annex ? annex : "", |
10783 | phex_nz (offset, sizeof offset), | |
10784 | phex_nz (n, sizeof n)); | |
10785 | i = putpkt (rs->buf); | |
10786 | if (i < 0) | |
2ed4b548 | 10787 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10788 | |
10789 | rs->buf[0] = '\0'; | |
8d64371b | 10790 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 10791 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10792 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10793 | |
10794 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 10795 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
10796 | |
10797 | /* 'm' means there is (or at least might be) more data after this | |
10798 | batch. That does not make sense unless there's at least one byte | |
10799 | of data in this reply. */ | |
10800 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10801 | error (_("Remote qXfer reply contained no data.")); | |
10802 | ||
10803 | /* Got some data. */ | |
8d64371b | 10804 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 10805 | packet_len - 1, readbuf, n); |
0876f84a DJ |
10806 | |
10807 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10808 | or possibly empty. If we have the final block of a non-empty |
10809 | object, record this fact to bypass a subsequent partial read. */ | |
10810 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10811 | { |
8e88304f TT |
10812 | rs->finished_object = xstrdup (object_name); |
10813 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10814 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10815 | } |
10816 | ||
9b409511 YQ |
10817 | if (i == 0) |
10818 | return TARGET_XFER_EOF; | |
10819 | else | |
10820 | { | |
10821 | *xfered_len = i; | |
10822 | return TARGET_XFER_OK; | |
10823 | } | |
0876f84a DJ |
10824 | } |
10825 | ||
f6ac5f3d PA |
10826 | enum target_xfer_status |
10827 | remote_target::xfer_partial (enum target_object object, | |
10828 | const char *annex, gdb_byte *readbuf, | |
10829 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10830 | ULONGEST *xfered_len) | |
c906108c | 10831 | { |
82f73884 | 10832 | struct remote_state *rs; |
c906108c | 10833 | int i; |
6d820c5c | 10834 | char *p2; |
1e3ff5ad | 10835 | char query_type; |
124e13d9 | 10836 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10837 | |
e6e4e701 | 10838 | set_remote_traceframe (); |
82f73884 PA |
10839 | set_general_thread (inferior_ptid); |
10840 | ||
10841 | rs = get_remote_state (); | |
10842 | ||
b2182ed2 | 10843 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10844 | if (object == TARGET_OBJECT_MEMORY) |
10845 | { | |
2d717e4f DJ |
10846 | /* If the remote target is connected but not running, we should |
10847 | pass this request down to a lower stratum (e.g. the executable | |
10848 | file). */ | |
10849 | if (!target_has_execution) | |
9b409511 | 10850 | return TARGET_XFER_EOF; |
2d717e4f | 10851 | |
21e3b9b9 | 10852 | if (writebuf != NULL) |
124e13d9 SM |
10853 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10854 | xfered_len); | |
21e3b9b9 | 10855 | else |
6b8edb51 | 10856 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 10857 | xfered_len); |
21e3b9b9 DJ |
10858 | } |
10859 | ||
0df8b418 | 10860 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10861 | if (object == TARGET_OBJECT_SPU) |
10862 | { | |
10863 | if (readbuf) | |
f6ac5f3d | 10864 | return remote_read_qxfer ("spu", annex, readbuf, offset, len, |
9b409511 YQ |
10865 | xfered_len, &remote_protocol_packets |
10866 | [PACKET_qXfer_spu_read]); | |
0e7f50da | 10867 | else |
f6ac5f3d | 10868 | return remote_write_qxfer ("spu", annex, writebuf, offset, len, |
9b409511 YQ |
10869 | xfered_len, &remote_protocol_packets |
10870 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10871 | } |
10872 | ||
4aa995e1 PA |
10873 | /* Handle extra signal info using qxfer packets. */ |
10874 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10875 | { | |
10876 | if (readbuf) | |
f6ac5f3d | 10877 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 10878 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10879 | [PACKET_qXfer_siginfo_read]); |
10880 | else | |
f6ac5f3d | 10881 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 10882 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10883 | &remote_protocol_packets |
10884 | [PACKET_qXfer_siginfo_write]); | |
10885 | } | |
10886 | ||
0fb4aa4b PA |
10887 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10888 | { | |
10889 | if (readbuf) | |
f6ac5f3d | 10890 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 10891 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10892 | &remote_protocol_packets |
10893 | [PACKET_qXfer_statictrace_read]); | |
10894 | else | |
2ed4b548 | 10895 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10896 | } |
10897 | ||
a76d924d DJ |
10898 | /* Only handle flash writes. */ |
10899 | if (writebuf != NULL) | |
10900 | { | |
a76d924d DJ |
10901 | switch (object) |
10902 | { | |
10903 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 10904 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 10905 | writebuf); |
a76d924d DJ |
10906 | |
10907 | default: | |
2ed4b548 | 10908 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10909 | } |
10910 | } | |
4b8a223f | 10911 | |
1e3ff5ad AC |
10912 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10913 | objects!!! Instead specify new query packets. */ | |
10914 | switch (object) | |
c906108c | 10915 | { |
1e3ff5ad AC |
10916 | case TARGET_OBJECT_AVR: |
10917 | query_type = 'R'; | |
10918 | break; | |
802188a7 RM |
10919 | |
10920 | case TARGET_OBJECT_AUXV: | |
0876f84a | 10921 | gdb_assert (annex == NULL); |
f6ac5f3d | 10922 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 10923 | xfered_len, |
0876f84a | 10924 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10925 | |
23181151 DJ |
10926 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10927 | return remote_read_qxfer | |
f6ac5f3d | 10928 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10929 | &remote_protocol_packets[PACKET_qXfer_features]); |
10930 | ||
cfa9d6d9 DJ |
10931 | case TARGET_OBJECT_LIBRARIES: |
10932 | return remote_read_qxfer | |
f6ac5f3d | 10933 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10934 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10935 | ||
2268b414 JK |
10936 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10937 | return remote_read_qxfer | |
f6ac5f3d | 10938 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10939 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10940 | ||
fd79ecee DJ |
10941 | case TARGET_OBJECT_MEMORY_MAP: |
10942 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10943 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 10944 | xfered_len, |
fd79ecee DJ |
10945 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10946 | ||
07e059b5 VP |
10947 | case TARGET_OBJECT_OSDATA: |
10948 | /* Should only get here if we're connected. */ | |
5d93a237 | 10949 | gdb_assert (rs->remote_desc); |
07e059b5 | 10950 | return remote_read_qxfer |
f6ac5f3d | 10951 | ("osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10952 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10953 | ||
dc146f7c VP |
10954 | case TARGET_OBJECT_THREADS: |
10955 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10956 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 10957 | xfered_len, |
dc146f7c VP |
10958 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10959 | ||
b3b9301e PA |
10960 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10961 | gdb_assert (annex == NULL); | |
10962 | return remote_read_qxfer | |
f6ac5f3d | 10963 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10964 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10965 | |
10966 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 10967 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 10968 | xfered_len, |
78d85199 | 10969 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10970 | |
10971 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 10972 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 10973 | xfered_len, |
169081d0 TG |
10974 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10975 | ||
9accd112 | 10976 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 10977 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 10978 | xfered_len, |
9accd112 MM |
10979 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10980 | ||
f4abbc16 | 10981 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 10982 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
10983 | len, xfered_len, |
10984 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10985 | ||
c78fa86a | 10986 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 10987 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
10988 | len, xfered_len, |
10989 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10990 | ||
1e3ff5ad | 10991 | default: |
2ed4b548 | 10992 | return TARGET_XFER_E_IO; |
c906108c SS |
10993 | } |
10994 | ||
0df8b418 | 10995 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10996 | large enough let the caller deal with it. */ |
ea9c271d | 10997 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10998 | return TARGET_XFER_E_IO; |
ea9c271d | 10999 | len = get_remote_packet_size (); |
1e3ff5ad | 11000 | |
23860348 | 11001 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11002 | if (!rs->remote_desc) |
8a3fe4f8 | 11003 | error (_("remote query is only available after target open")); |
c906108c | 11004 | |
1e3ff5ad | 11005 | gdb_assert (annex != NULL); |
4b8a223f | 11006 | gdb_assert (readbuf != NULL); |
c906108c | 11007 | |
8d64371b | 11008 | p2 = rs->buf.data (); |
c906108c SS |
11009 | *p2++ = 'q'; |
11010 | *p2++ = query_type; | |
11011 | ||
23860348 MS |
11012 | /* We used one buffer char for the remote protocol q command and |
11013 | another for the query type. As the remote protocol encapsulation | |
11014 | uses 4 chars plus one extra in case we are debugging | |
11015 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11016 | string. */ | |
c906108c | 11017 | i = 0; |
ea9c271d | 11018 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11019 | { |
1e3ff5ad AC |
11020 | /* Bad caller may have sent forbidden characters. */ |
11021 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11022 | *p2++ = annex[i]; | |
c906108c SS |
11023 | i++; |
11024 | } | |
1e3ff5ad AC |
11025 | *p2 = '\0'; |
11026 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11027 | |
6d820c5c | 11028 | i = putpkt (rs->buf); |
c5aa993b | 11029 | if (i < 0) |
2ed4b548 | 11030 | return TARGET_XFER_E_IO; |
c906108c | 11031 | |
8d64371b TT |
11032 | getpkt (&rs->buf, 0); |
11033 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11034 | |
9b409511 | 11035 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11036 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11037 | } |
11038 | ||
09c98b44 DB |
11039 | /* Implementation of to_get_memory_xfer_limit. */ |
11040 | ||
f6ac5f3d PA |
11041 | ULONGEST |
11042 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11043 | { |
11044 | return get_memory_write_packet_size (); | |
11045 | } | |
11046 | ||
f6ac5f3d PA |
11047 | int |
11048 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11049 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11050 | CORE_ADDR *found_addrp) | |
08388c79 | 11051 | { |
f5656ead | 11052 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11053 | struct remote_state *rs = get_remote_state (); |
11054 | int max_size = get_memory_write_packet_size (); | |
11055 | struct packet_config *packet = | |
11056 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11057 | /* Number of packet bytes used to encode the pattern; |
11058 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11059 | int escaped_pattern_len; |
0df8b418 | 11060 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11061 | int used_pattern_len; |
11062 | int i; | |
11063 | int found; | |
11064 | ULONGEST found_addr; | |
11065 | ||
7cc244de PA |
11066 | /* Don't go to the target if we don't have to. This is done before |
11067 | checking packet_config_support to avoid the possibility that a | |
11068 | success for this edge case means the facility works in | |
11069 | general. */ | |
08388c79 DE |
11070 | if (pattern_len > search_space_len) |
11071 | return 0; | |
11072 | if (pattern_len == 0) | |
11073 | { | |
11074 | *found_addrp = start_addr; | |
11075 | return 1; | |
11076 | } | |
11077 | ||
11078 | /* If we already know the packet isn't supported, fall back to the simple | |
11079 | way of searching memory. */ | |
11080 | ||
4082afcc | 11081 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11082 | { |
11083 | /* Target doesn't provided special support, fall back and use the | |
11084 | standard support (copy memory and do the search here). */ | |
f6ac5f3d | 11085 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11086 | pattern, pattern_len, found_addrp); |
11087 | } | |
11088 | ||
28439a30 PA |
11089 | /* Make sure the remote is pointing at the right process. */ |
11090 | set_general_process (); | |
11091 | ||
08388c79 | 11092 | /* Insert header. */ |
8d64371b | 11093 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11094 | "qSearch:memory:%s;%s;", |
5af949e3 | 11095 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11096 | phex_nz (search_space_len, sizeof (search_space_len))); |
11097 | max_size -= (i + 1); | |
11098 | ||
11099 | /* Escape as much data as fits into rs->buf. */ | |
11100 | escaped_pattern_len = | |
8d64371b TT |
11101 | remote_escape_output (pattern, pattern_len, 1, |
11102 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11103 | &used_pattern_len, max_size); |
11104 | ||
11105 | /* Bail if the pattern is too large. */ | |
11106 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11107 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11108 | |
8d64371b TT |
11109 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11110 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11111 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11112 | { | |
11113 | /* The request may not have worked because the command is not | |
11114 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11115 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11116 | { |
f6ac5f3d | 11117 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11118 | pattern, pattern_len, found_addrp); |
11119 | } | |
11120 | return -1; | |
11121 | } | |
11122 | ||
11123 | if (rs->buf[0] == '0') | |
11124 | found = 0; | |
11125 | else if (rs->buf[0] == '1') | |
11126 | { | |
11127 | found = 1; | |
11128 | if (rs->buf[1] != ',') | |
8d64371b TT |
11129 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11130 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11131 | *found_addrp = found_addr; |
11132 | } | |
11133 | else | |
8d64371b | 11134 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11135 | |
11136 | return found; | |
11137 | } | |
11138 | ||
f6ac5f3d PA |
11139 | void |
11140 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11141 | { |
d01949b6 | 11142 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11143 | char *p = rs->buf.data (); |
96baa820 | 11144 | |
5d93a237 | 11145 | if (!rs->remote_desc) |
8a3fe4f8 | 11146 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11147 | |
23860348 | 11148 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11149 | if (command == NULL) |
11150 | command = ""; | |
11151 | ||
23860348 | 11152 | /* The query prefix. */ |
8d64371b TT |
11153 | strcpy (rs->buf.data (), "qRcmd,"); |
11154 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11155 | |
8d64371b | 11156 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11157 | > get_remote_packet_size ()) |
8a3fe4f8 | 11158 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11159 | |
23860348 | 11160 | /* Encode the actual command. */ |
a30bf1f1 | 11161 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11162 | |
6d820c5c | 11163 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11164 | error (_("Communication problem with target.")); |
96baa820 JM |
11165 | |
11166 | /* get/display the response */ | |
11167 | while (1) | |
11168 | { | |
2e9f7625 DJ |
11169 | char *buf; |
11170 | ||
00bf0b85 | 11171 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11172 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11173 | rs->buf[0] = '\0'; |
8d64371b | 11174 | if (getpkt_sane (&rs->buf, 0) == -1) |
5b37825d PW |
11175 | { |
11176 | /* Timeout. Continue to (try to) read responses. | |
11177 | This is better than stopping with an error, assuming the stub | |
11178 | is still executing the (long) monitor command. | |
11179 | If needed, the user can interrupt gdb using C-c, obtaining | |
11180 | an effect similar to stop on timeout. */ | |
11181 | continue; | |
11182 | } | |
8d64371b | 11183 | buf = rs->buf.data (); |
96baa820 | 11184 | if (buf[0] == '\0') |
8a3fe4f8 | 11185 | error (_("Target does not support this command.")); |
96baa820 JM |
11186 | if (buf[0] == 'O' && buf[1] != 'K') |
11187 | { | |
23860348 | 11188 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11189 | continue; |
11190 | } | |
11191 | if (strcmp (buf, "OK") == 0) | |
11192 | break; | |
7be570e7 JM |
11193 | if (strlen (buf) == 3 && buf[0] == 'E' |
11194 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11195 | { | |
8a3fe4f8 | 11196 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11197 | } |
96baa820 JM |
11198 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11199 | { | |
11200 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11201 | |
96baa820 JM |
11202 | fputc_unfiltered (c, outbuf); |
11203 | } | |
11204 | break; | |
11205 | } | |
11206 | } | |
11207 | ||
f6ac5f3d PA |
11208 | std::vector<mem_region> |
11209 | remote_target::memory_map () | |
fd79ecee | 11210 | { |
a664f67e | 11211 | std::vector<mem_region> result; |
9018be22 | 11212 | gdb::optional<gdb::char_vector> text |
8b88a78e | 11213 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11214 | |
11215 | if (text) | |
9018be22 | 11216 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11217 | |
11218 | return result; | |
11219 | } | |
11220 | ||
c906108c | 11221 | static void |
ac88e2de | 11222 | packet_command (const char *args, int from_tty) |
c906108c | 11223 | { |
6b8edb51 | 11224 | remote_target *remote = get_current_remote_target (); |
c906108c | 11225 | |
6b8edb51 | 11226 | if (remote == nullptr) |
8a3fe4f8 | 11227 | error (_("command can only be used with remote target")); |
c906108c | 11228 | |
6b8edb51 PA |
11229 | remote->packet_command (args, from_tty); |
11230 | } | |
11231 | ||
11232 | void | |
11233 | remote_target::packet_command (const char *args, int from_tty) | |
11234 | { | |
c5aa993b | 11235 | if (!args) |
8a3fe4f8 | 11236 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11237 | |
11238 | puts_filtered ("sending: "); | |
11239 | print_packet (args); | |
11240 | puts_filtered ("\n"); | |
11241 | putpkt (args); | |
11242 | ||
6b8edb51 PA |
11243 | remote_state *rs = get_remote_state (); |
11244 | ||
8d64371b | 11245 | getpkt (&rs->buf, 0); |
c906108c | 11246 | puts_filtered ("received: "); |
8d64371b | 11247 | print_packet (rs->buf.data ()); |
c906108c SS |
11248 | puts_filtered ("\n"); |
11249 | } | |
11250 | ||
11251 | #if 0 | |
23860348 | 11252 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11253 | |
a14ed312 | 11254 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11255 | |
a14ed312 | 11256 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11257 | |
a14ed312 | 11258 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11259 | |
a14ed312 | 11260 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11261 | |
23860348 | 11262 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11263 | |
a14ed312 | 11264 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11265 | |
23860348 | 11266 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11267 | |
a14ed312 | 11268 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11269 | |
a14ed312 | 11270 | static void init_remote_threadtests (void); |
c906108c | 11271 | |
23860348 | 11272 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11273 | |
11274 | static void | |
0b39b52e | 11275 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11276 | { |
11277 | int sample_thread = SAMPLE_THREAD; | |
11278 | ||
a3f17187 | 11279 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11280 | set_general_thread (sample_thread); |
c906108c SS |
11281 | } |
11282 | ||
11283 | ||
11284 | static void | |
0b39b52e | 11285 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11286 | { |
11287 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11288 | int pid = inferior_ptid.pid (); |
fd79271b | 11289 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11290 | |
79d7f229 | 11291 | if (remote_thread_alive (ptid)) |
c906108c SS |
11292 | printf_filtered ("PASS: Thread alive test\n"); |
11293 | else | |
11294 | printf_filtered ("FAIL: Thread alive test\n"); | |
11295 | } | |
11296 | ||
23860348 | 11297 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11298 | |
11299 | void | |
fba45db2 | 11300 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11301 | { |
11302 | char hexid[20]; | |
11303 | ||
23860348 | 11304 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
11305 | hexid[16] = 0; |
11306 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11307 | } | |
11308 | ||
11309 | static void | |
0b39b52e | 11310 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11311 | { |
11312 | int startflag = 1; | |
11313 | threadref nextthread; | |
11314 | int done, result_count; | |
11315 | threadref threadlist[3]; | |
11316 | ||
11317 | printf_filtered ("Remote Threadlist test\n"); | |
11318 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11319 | &result_count, &threadlist[0])) | |
11320 | printf_filtered ("FAIL: threadlist test\n"); | |
11321 | else | |
11322 | { | |
11323 | threadref *scan = threadlist; | |
11324 | threadref *limit = scan + result_count; | |
11325 | ||
11326 | while (scan < limit) | |
11327 | output_threadid (" thread ", scan++); | |
11328 | } | |
11329 | } | |
11330 | ||
11331 | void | |
fba45db2 | 11332 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11333 | { |
11334 | output_threadid ("Threadid: ", &info->threadid); | |
11335 | printf_filtered ("Name: %s\n ", info->shortname); | |
11336 | printf_filtered ("State: %s\n", info->display); | |
11337 | printf_filtered ("other: %s\n\n", info->more_display); | |
11338 | } | |
11339 | ||
11340 | int | |
fba45db2 | 11341 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11342 | { |
11343 | int result; | |
11344 | int set; | |
11345 | struct gdb_ext_thread_info threadinfo; | |
11346 | ||
11347 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11348 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11349 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11350 | display_thread_info (&threadinfo); | |
11351 | return result; | |
11352 | } | |
11353 | ||
11354 | static void | |
0b39b52e | 11355 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11356 | { |
11357 | int athread = SAMPLE_THREAD; | |
11358 | threadref thread; | |
11359 | int set; | |
11360 | ||
11361 | int_to_threadref (&thread, athread); | |
11362 | printf_filtered ("Remote Threadinfo test\n"); | |
11363 | if (!get_and_display_threadinfo (&thread)) | |
11364 | printf_filtered ("FAIL cannot get thread info\n"); | |
11365 | } | |
11366 | ||
11367 | static int | |
fba45db2 | 11368 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11369 | { |
11370 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11371 | return get_and_display_threadinfo (ref); | |
11372 | } | |
11373 | ||
11374 | static void | |
0b39b52e | 11375 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11376 | { |
11377 | printf_filtered ("Remote Threadlist update test\n"); | |
11378 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11379 | } | |
11380 | ||
11381 | static void | |
11382 | init_remote_threadtests (void) | |
11383 | { | |
3e43a32a MS |
11384 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11385 | _("Fetch and print the remote list of " | |
11386 | "thread identifiers, one pkt only")); | |
c906108c | 11387 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 11388 | _("Fetch and display info about one thread")); |
c906108c | 11389 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 11390 | _("Test setting to a different thread")); |
c906108c | 11391 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 11392 | _("Iterate through updating all remote thread info")); |
c906108c | 11393 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 11394 | _(" Remote thread alive test ")); |
c906108c SS |
11395 | } |
11396 | ||
11397 | #endif /* 0 */ | |
11398 | ||
f3fb8c85 MS |
11399 | /* Convert a thread ID to a string. Returns the string in a static |
11400 | buffer. */ | |
11401 | ||
f6ac5f3d PA |
11402 | const char * |
11403 | remote_target::pid_to_str (ptid_t ptid) | |
f3fb8c85 | 11404 | { |
79d7f229 | 11405 | static char buf[64]; |
82f73884 | 11406 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11407 | |
d7e15655 | 11408 | if (ptid == null_ptid) |
7cee1e54 | 11409 | return normal_pid_to_str (ptid); |
0e998d96 | 11410 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11411 | { |
11412 | /* Printing an inferior target id. */ | |
11413 | ||
11414 | /* When multi-process extensions are off, there's no way in the | |
11415 | remote protocol to know the remote process id, if there's any | |
11416 | at all. There's one exception --- when we're connected with | |
11417 | target extended-remote, and we manually attached to a process | |
11418 | with "attach PID". We don't record anywhere a flag that | |
11419 | allows us to distinguish that case from the case of | |
11420 | connecting with extended-remote and the stub already being | |
11421 | attached to a process, and reporting yes to qAttached, hence | |
11422 | no smart special casing here. */ | |
11423 | if (!remote_multi_process_p (rs)) | |
11424 | { | |
11425 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11426 | return buf; | |
11427 | } | |
11428 | ||
11429 | return normal_pid_to_str (ptid); | |
82f73884 | 11430 | } |
ecd0ada5 | 11431 | else |
79d7f229 | 11432 | { |
d7e15655 | 11433 | if (magic_null_ptid == ptid) |
ecd0ada5 | 11434 | xsnprintf (buf, sizeof buf, "Thread <main>"); |
8020350c | 11435 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11436 | if (ptid.lwp () == 0) |
de0d863e DB |
11437 | return normal_pid_to_str (ptid); |
11438 | else | |
11439 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
e38504b3 | 11440 | ptid.pid (), ptid.lwp ()); |
ecd0ada5 PA |
11441 | else |
11442 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
e38504b3 | 11443 | ptid.lwp ()); |
79d7f229 PA |
11444 | return buf; |
11445 | } | |
f3fb8c85 MS |
11446 | } |
11447 | ||
38691318 KB |
11448 | /* Get the address of the thread local variable in OBJFILE which is |
11449 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11450 | ||
f6ac5f3d PA |
11451 | CORE_ADDR |
11452 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11453 | CORE_ADDR offset) | |
38691318 | 11454 | { |
4082afcc | 11455 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11456 | { |
11457 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11458 | char *p = rs->buf.data (); |
11459 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11460 | enum packet_result result; |
38691318 KB |
11461 | |
11462 | strcpy (p, "qGetTLSAddr:"); | |
11463 | p += strlen (p); | |
82f73884 | 11464 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11465 | *p++ = ','; |
11466 | p += hexnumstr (p, offset); | |
11467 | *p++ = ','; | |
11468 | p += hexnumstr (p, lm); | |
11469 | *p++ = '\0'; | |
11470 | ||
6d820c5c | 11471 | putpkt (rs->buf); |
8d64371b | 11472 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11473 | result = packet_ok (rs->buf, |
11474 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11475 | if (result == PACKET_OK) |
38691318 | 11476 | { |
b926417a | 11477 | ULONGEST addr; |
38691318 | 11478 | |
8d64371b | 11479 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11480 | return addr; |
38691318 | 11481 | } |
571dd617 | 11482 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11483 | throw_error (TLS_GENERIC_ERROR, |
11484 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11485 | else |
109c3e39 AC |
11486 | throw_error (TLS_GENERIC_ERROR, |
11487 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11488 | } |
11489 | else | |
109c3e39 AC |
11490 | throw_error (TLS_GENERIC_ERROR, |
11491 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11492 | /* Not reached. */ |
11493 | return 0; | |
11494 | } | |
11495 | ||
711e434b PM |
11496 | /* Provide thread local base, i.e. Thread Information Block address. |
11497 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11498 | ||
57810aa7 | 11499 | bool |
f6ac5f3d | 11500 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11501 | { |
4082afcc | 11502 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11503 | { |
11504 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11505 | char *p = rs->buf.data (); |
11506 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11507 | enum packet_result result; |
11508 | ||
11509 | strcpy (p, "qGetTIBAddr:"); | |
11510 | p += strlen (p); | |
11511 | p = write_ptid (p, endp, ptid); | |
11512 | *p++ = '\0'; | |
11513 | ||
11514 | putpkt (rs->buf); | |
8d64371b | 11515 | getpkt (&rs->buf, 0); |
711e434b PM |
11516 | result = packet_ok (rs->buf, |
11517 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11518 | if (result == PACKET_OK) | |
11519 | { | |
b926417a | 11520 | ULONGEST val; |
8d64371b | 11521 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11522 | if (addr) |
b926417a | 11523 | *addr = (CORE_ADDR) val; |
57810aa7 | 11524 | return true; |
711e434b PM |
11525 | } |
11526 | else if (result == PACKET_UNKNOWN) | |
11527 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11528 | else | |
11529 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11530 | } | |
11531 | else | |
11532 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11533 | /* Not reached. */ | |
57810aa7 | 11534 | return false; |
711e434b PM |
11535 | } |
11536 | ||
29709017 DJ |
11537 | /* Support for inferring a target description based on the current |
11538 | architecture and the size of a 'g' packet. While the 'g' packet | |
11539 | can have any size (since optional registers can be left off the | |
11540 | end), some sizes are easily recognizable given knowledge of the | |
11541 | approximate architecture. */ | |
11542 | ||
11543 | struct remote_g_packet_guess | |
11544 | { | |
eefce37f TT |
11545 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11546 | : bytes (bytes_), | |
11547 | tdesc (tdesc_) | |
11548 | { | |
11549 | } | |
11550 | ||
29709017 DJ |
11551 | int bytes; |
11552 | const struct target_desc *tdesc; | |
11553 | }; | |
29709017 | 11554 | |
eefce37f | 11555 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11556 | { |
eefce37f | 11557 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11558 | }; |
11559 | ||
11560 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11561 | ||
11562 | static void * | |
11563 | remote_g_packet_data_init (struct obstack *obstack) | |
11564 | { | |
eefce37f | 11565 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11566 | } |
11567 | ||
11568 | void | |
11569 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11570 | const struct target_desc *tdesc) | |
11571 | { | |
11572 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11573 | = ((struct remote_g_packet_data *) |
11574 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11575 | |
11576 | gdb_assert (tdesc != NULL); | |
11577 | ||
eefce37f TT |
11578 | for (const remote_g_packet_guess &guess : data->guesses) |
11579 | if (guess.bytes == bytes) | |
29709017 | 11580 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11581 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11582 | bytes); |
11583 | ||
eefce37f | 11584 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11585 | } |
11586 | ||
eefce37f TT |
11587 | /* Return true if remote_read_description would do anything on this target |
11588 | and architecture, false otherwise. */ | |
d962ef82 | 11589 | |
eefce37f | 11590 | static bool |
d962ef82 DJ |
11591 | remote_read_description_p (struct target_ops *target) |
11592 | { | |
11593 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11594 | = ((struct remote_g_packet_data *) |
11595 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11596 | |
eefce37f | 11597 | return !data->guesses.empty (); |
d962ef82 DJ |
11598 | } |
11599 | ||
f6ac5f3d PA |
11600 | const struct target_desc * |
11601 | remote_target::read_description () | |
29709017 DJ |
11602 | { |
11603 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11604 | = ((struct remote_g_packet_data *) |
11605 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11606 | |
d962ef82 DJ |
11607 | /* Do not try this during initial connection, when we do not know |
11608 | whether there is a running but stopped thread. */ | |
d7e15655 | 11609 | if (!target_has_execution || inferior_ptid == null_ptid) |
b6a8c27b | 11610 | return beneath ()->read_description (); |
d962ef82 | 11611 | |
eefce37f | 11612 | if (!data->guesses.empty ()) |
29709017 | 11613 | { |
29709017 DJ |
11614 | int bytes = send_g_packet (); |
11615 | ||
eefce37f TT |
11616 | for (const remote_g_packet_guess &guess : data->guesses) |
11617 | if (guess.bytes == bytes) | |
11618 | return guess.tdesc; | |
29709017 DJ |
11619 | |
11620 | /* We discard the g packet. A minor optimization would be to | |
11621 | hold on to it, and fill the register cache once we have selected | |
11622 | an architecture, but it's too tricky to do safely. */ | |
11623 | } | |
11624 | ||
b6a8c27b | 11625 | return beneath ()->read_description (); |
29709017 DJ |
11626 | } |
11627 | ||
a6b151f1 DJ |
11628 | /* Remote file transfer support. This is host-initiated I/O, not |
11629 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11630 | ||
11631 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11632 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11633 | decrease *LEFT. Otherwise raise an error. */ | |
11634 | ||
11635 | static void | |
a121b7c1 | 11636 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11637 | { |
11638 | int len = strlen (string); | |
11639 | ||
11640 | if (len > *left) | |
11641 | error (_("Packet too long for target.")); | |
11642 | ||
11643 | memcpy (*buffer, string, len); | |
11644 | *buffer += len; | |
11645 | *left -= len; | |
11646 | ||
11647 | /* NUL-terminate the buffer as a convenience, if there is | |
11648 | room. */ | |
11649 | if (*left) | |
11650 | **buffer = '\0'; | |
11651 | } | |
11652 | ||
11653 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11654 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11655 | decrease *LEFT. Otherwise raise an error. */ | |
11656 | ||
11657 | static void | |
11658 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11659 | int len) | |
11660 | { | |
11661 | if (2 * len > *left) | |
11662 | error (_("Packet too long for target.")); | |
11663 | ||
11664 | bin2hex (bytes, *buffer, len); | |
11665 | *buffer += 2 * len; | |
11666 | *left -= 2 * len; | |
11667 | ||
11668 | /* NUL-terminate the buffer as a convenience, if there is | |
11669 | room. */ | |
11670 | if (*left) | |
11671 | **buffer = '\0'; | |
11672 | } | |
11673 | ||
11674 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11675 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11676 | decrease *LEFT. Otherwise raise an error. */ | |
11677 | ||
11678 | static void | |
11679 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11680 | { | |
11681 | int len = hexnumlen (value); | |
11682 | ||
11683 | if (len > *left) | |
11684 | error (_("Packet too long for target.")); | |
11685 | ||
11686 | hexnumstr (*buffer, value); | |
11687 | *buffer += len; | |
11688 | *left -= len; | |
11689 | ||
11690 | /* NUL-terminate the buffer as a convenience, if there is | |
11691 | room. */ | |
11692 | if (*left) | |
11693 | **buffer = '\0'; | |
11694 | } | |
11695 | ||
11696 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11697 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11698 | was included, and *ATTACHMENT to point to the start of the annex | |
11699 | if any. The length of the packet isn't needed here; there may | |
11700 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11701 | ||
11702 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11703 | -1 is returned, the other variables may not be initialized. */ | |
11704 | ||
11705 | static int | |
11706 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11707 | int *remote_errno, char **attachment) | |
11708 | { | |
11709 | char *p, *p2; | |
11710 | ||
11711 | *remote_errno = 0; | |
11712 | *attachment = NULL; | |
11713 | ||
11714 | if (buffer[0] != 'F') | |
11715 | return -1; | |
11716 | ||
11717 | errno = 0; | |
11718 | *retcode = strtol (&buffer[1], &p, 16); | |
11719 | if (errno != 0 || p == &buffer[1]) | |
11720 | return -1; | |
11721 | ||
11722 | /* Check for ",errno". */ | |
11723 | if (*p == ',') | |
11724 | { | |
11725 | errno = 0; | |
11726 | *remote_errno = strtol (p + 1, &p2, 16); | |
11727 | if (errno != 0 || p + 1 == p2) | |
11728 | return -1; | |
11729 | p = p2; | |
11730 | } | |
11731 | ||
11732 | /* Check for ";attachment". If there is no attachment, the | |
11733 | packet should end here. */ | |
11734 | if (*p == ';') | |
11735 | { | |
11736 | *attachment = p + 1; | |
11737 | return 0; | |
11738 | } | |
11739 | else if (*p == '\0') | |
11740 | return 0; | |
11741 | else | |
11742 | return -1; | |
11743 | } | |
11744 | ||
11745 | /* Send a prepared I/O packet to the target and read its response. | |
11746 | The prepared packet is in the global RS->BUF before this function | |
11747 | is called, and the answer is there when we return. | |
11748 | ||
11749 | COMMAND_BYTES is the length of the request to send, which may include | |
11750 | binary data. WHICH_PACKET is the packet configuration to check | |
11751 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11752 | is set to the error number and -1 is returned. Otherwise the value | |
11753 | returned by the function is returned. | |
11754 | ||
11755 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11756 | attachment is expected; an error will be reported if there's a | |
11757 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11758 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11759 | attachment's length. */ | |
11760 | ||
6b8edb51 PA |
11761 | int |
11762 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
11763 | int *remote_errno, char **attachment, | |
11764 | int *attachment_len) | |
a6b151f1 DJ |
11765 | { |
11766 | struct remote_state *rs = get_remote_state (); | |
11767 | int ret, bytes_read; | |
11768 | char *attachment_tmp; | |
11769 | ||
20db9c52 | 11770 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11771 | { |
11772 | *remote_errno = FILEIO_ENOSYS; | |
11773 | return -1; | |
11774 | } | |
11775 | ||
8d64371b TT |
11776 | putpkt_binary (rs->buf.data (), command_bytes); |
11777 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
11778 | |
11779 | /* If it timed out, something is wrong. Don't try to parse the | |
11780 | buffer. */ | |
11781 | if (bytes_read < 0) | |
11782 | { | |
11783 | *remote_errno = FILEIO_EINVAL; | |
11784 | return -1; | |
11785 | } | |
11786 | ||
11787 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11788 | { | |
11789 | case PACKET_ERROR: | |
11790 | *remote_errno = FILEIO_EINVAL; | |
11791 | return -1; | |
11792 | case PACKET_UNKNOWN: | |
11793 | *remote_errno = FILEIO_ENOSYS; | |
11794 | return -1; | |
11795 | case PACKET_OK: | |
11796 | break; | |
11797 | } | |
11798 | ||
8d64371b | 11799 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
11800 | &attachment_tmp)) |
11801 | { | |
11802 | *remote_errno = FILEIO_EINVAL; | |
11803 | return -1; | |
11804 | } | |
11805 | ||
11806 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11807 | if ((attachment_tmp == NULL && attachment != NULL) | |
11808 | || (attachment_tmp != NULL && attachment == NULL)) | |
11809 | { | |
11810 | *remote_errno = FILEIO_EINVAL; | |
11811 | return -1; | |
11812 | } | |
11813 | ||
11814 | /* If an attachment was found, it must point into the packet buffer; | |
11815 | work out how many bytes there were. */ | |
11816 | if (attachment_tmp != NULL) | |
11817 | { | |
11818 | *attachment = attachment_tmp; | |
8d64371b | 11819 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
11820 | } |
11821 | ||
11822 | return ret; | |
11823 | } | |
11824 | ||
dd194f6b | 11825 | /* See declaration.h. */ |
80152258 | 11826 | |
dd194f6b PA |
11827 | void |
11828 | readahead_cache::invalidate () | |
80152258 | 11829 | { |
dd194f6b | 11830 | this->fd = -1; |
80152258 PA |
11831 | } |
11832 | ||
dd194f6b | 11833 | /* See declaration.h. */ |
80152258 | 11834 | |
dd194f6b PA |
11835 | void |
11836 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 11837 | { |
dd194f6b PA |
11838 | if (this->fd == fd) |
11839 | this->fd = -1; | |
80152258 PA |
11840 | } |
11841 | ||
15a201c8 GB |
11842 | /* Set the filesystem remote_hostio functions that take FILENAME |
11843 | arguments will use. Return 0 on success, or -1 if an error | |
11844 | occurs (and set *REMOTE_ERRNO). */ | |
11845 | ||
6b8edb51 PA |
11846 | int |
11847 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
11848 | int *remote_errno) | |
15a201c8 GB |
11849 | { |
11850 | struct remote_state *rs = get_remote_state (); | |
11851 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 11852 | char *p = rs->buf.data (); |
15a201c8 GB |
11853 | int left = get_remote_packet_size () - 1; |
11854 | char arg[9]; | |
11855 | int ret; | |
11856 | ||
11857 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11858 | return 0; | |
11859 | ||
11860 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11861 | return 0; | |
11862 | ||
11863 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11864 | ||
11865 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11866 | remote_buffer_add_string (&p, &left, arg); | |
11867 | ||
8d64371b | 11868 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
11869 | remote_errno, NULL, NULL); |
11870 | ||
11871 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11872 | return 0; | |
11873 | ||
11874 | if (ret == 0) | |
11875 | rs->fs_pid = required_pid; | |
11876 | ||
11877 | return ret; | |
11878 | } | |
11879 | ||
12e2a5fd | 11880 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 11881 | |
6b8edb51 PA |
11882 | int |
11883 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
11884 | int flags, int mode, int warn_if_slow, | |
11885 | int *remote_errno) | |
a6b151f1 DJ |
11886 | { |
11887 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11888 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11889 | int left = get_remote_packet_size () - 1; |
11890 | ||
4313b8c0 GB |
11891 | if (warn_if_slow) |
11892 | { | |
11893 | static int warning_issued = 0; | |
11894 | ||
11895 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11896 | filename); | |
11897 | ||
11898 | if (!warning_issued) | |
11899 | { | |
11900 | warning (_("File transfers from remote targets can be slow." | |
11901 | " Use \"set sysroot\" to access files locally" | |
11902 | " instead.")); | |
11903 | warning_issued = 1; | |
11904 | } | |
11905 | } | |
11906 | ||
15a201c8 GB |
11907 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11908 | return -1; | |
11909 | ||
a6b151f1 DJ |
11910 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11911 | ||
11912 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11913 | strlen (filename)); | |
11914 | remote_buffer_add_string (&p, &left, ","); | |
11915 | ||
11916 | remote_buffer_add_int (&p, &left, flags); | |
11917 | remote_buffer_add_string (&p, &left, ","); | |
11918 | ||
11919 | remote_buffer_add_int (&p, &left, mode); | |
11920 | ||
8d64371b | 11921 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
11922 | remote_errno, NULL, NULL); |
11923 | } | |
11924 | ||
f6ac5f3d PA |
11925 | int |
11926 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
11927 | int flags, int mode, int warn_if_slow, | |
11928 | int *remote_errno) | |
11929 | { | |
6b8edb51 | 11930 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
11931 | remote_errno); |
11932 | } | |
11933 | ||
12e2a5fd | 11934 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 11935 | |
6b8edb51 PA |
11936 | int |
11937 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11938 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11939 | { |
11940 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11941 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11942 | int left = get_remote_packet_size (); |
11943 | int out_len; | |
11944 | ||
dd194f6b | 11945 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 11946 | |
a6b151f1 DJ |
11947 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11948 | ||
11949 | remote_buffer_add_int (&p, &left, fd); | |
11950 | remote_buffer_add_string (&p, &left, ","); | |
11951 | ||
11952 | remote_buffer_add_int (&p, &left, offset); | |
11953 | remote_buffer_add_string (&p, &left, ","); | |
11954 | ||
124e13d9 | 11955 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
11956 | (get_remote_packet_size () |
11957 | - (p - rs->buf.data ()))); | |
a6b151f1 | 11958 | |
8d64371b | 11959 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
11960 | remote_errno, NULL, NULL); |
11961 | } | |
11962 | ||
f6ac5f3d PA |
11963 | int |
11964 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11965 | ULONGEST offset, int *remote_errno) | |
11966 | { | |
6b8edb51 | 11967 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
11968 | } |
11969 | ||
80152258 PA |
11970 | /* Helper for the implementation of to_fileio_pread. Read the file |
11971 | from the remote side with vFile:pread. */ | |
a6b151f1 | 11972 | |
6b8edb51 PA |
11973 | int |
11974 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
11975 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11976 | { |
11977 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11978 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11979 | char *attachment; |
11980 | int left = get_remote_packet_size (); | |
11981 | int ret, attachment_len; | |
11982 | int read_len; | |
11983 | ||
11984 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11985 | ||
11986 | remote_buffer_add_int (&p, &left, fd); | |
11987 | remote_buffer_add_string (&p, &left, ","); | |
11988 | ||
11989 | remote_buffer_add_int (&p, &left, len); | |
11990 | remote_buffer_add_string (&p, &left, ","); | |
11991 | ||
11992 | remote_buffer_add_int (&p, &left, offset); | |
11993 | ||
8d64371b | 11994 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
11995 | remote_errno, &attachment, |
11996 | &attachment_len); | |
11997 | ||
11998 | if (ret < 0) | |
11999 | return ret; | |
12000 | ||
bc20a4af | 12001 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12002 | read_buf, len); |
12003 | if (read_len != ret) | |
12004 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12005 | ||
12006 | return ret; | |
12007 | } | |
12008 | ||
dd194f6b | 12009 | /* See declaration.h. */ |
80152258 | 12010 | |
dd194f6b PA |
12011 | int |
12012 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12013 | ULONGEST offset) | |
80152258 | 12014 | { |
dd194f6b PA |
12015 | if (this->fd == fd |
12016 | && this->offset <= offset | |
12017 | && offset < this->offset + this->bufsize) | |
80152258 | 12018 | { |
dd194f6b | 12019 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12020 | |
12021 | if (offset + len > max) | |
12022 | len = max - offset; | |
12023 | ||
dd194f6b | 12024 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12025 | return len; |
12026 | } | |
12027 | ||
12028 | return 0; | |
12029 | } | |
12030 | ||
12031 | /* Implementation of to_fileio_pread. */ | |
12032 | ||
6b8edb51 PA |
12033 | int |
12034 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12035 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12036 | { |
12037 | int ret; | |
12038 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12039 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12040 | |
dd194f6b | 12041 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12042 | if (ret > 0) |
12043 | { | |
12044 | cache->hit_count++; | |
12045 | ||
12046 | if (remote_debug) | |
12047 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
12048 | pulongest (cache->hit_count)); | |
12049 | return ret; | |
12050 | } | |
12051 | ||
12052 | cache->miss_count++; | |
12053 | if (remote_debug) | |
12054 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
12055 | pulongest (cache->miss_count)); | |
12056 | ||
12057 | cache->fd = fd; | |
12058 | cache->offset = offset; | |
12059 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12060 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12061 | |
6b8edb51 | 12062 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12063 | cache->offset, remote_errno); |
12064 | if (ret <= 0) | |
12065 | { | |
dd194f6b | 12066 | cache->invalidate_fd (fd); |
80152258 PA |
12067 | return ret; |
12068 | } | |
12069 | ||
12070 | cache->bufsize = ret; | |
dd194f6b | 12071 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12072 | } |
12073 | ||
f6ac5f3d PA |
12074 | int |
12075 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12076 | ULONGEST offset, int *remote_errno) | |
12077 | { | |
6b8edb51 | 12078 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12079 | } |
12080 | ||
12e2a5fd | 12081 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12082 | |
6b8edb51 PA |
12083 | int |
12084 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12085 | { |
12086 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12087 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12088 | int left = get_remote_packet_size () - 1; |
12089 | ||
dd194f6b | 12090 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12091 | |
a6b151f1 DJ |
12092 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12093 | ||
12094 | remote_buffer_add_int (&p, &left, fd); | |
12095 | ||
8d64371b | 12096 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12097 | remote_errno, NULL, NULL); |
12098 | } | |
12099 | ||
f6ac5f3d PA |
12100 | int |
12101 | remote_target::fileio_close (int fd, int *remote_errno) | |
12102 | { | |
6b8edb51 | 12103 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12104 | } |
12105 | ||
12e2a5fd | 12106 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12107 | |
6b8edb51 PA |
12108 | int |
12109 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12110 | int *remote_errno) | |
a6b151f1 DJ |
12111 | { |
12112 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12113 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12114 | int left = get_remote_packet_size () - 1; |
12115 | ||
15a201c8 GB |
12116 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12117 | return -1; | |
12118 | ||
a6b151f1 DJ |
12119 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12120 | ||
12121 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12122 | strlen (filename)); | |
12123 | ||
8d64371b | 12124 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12125 | remote_errno, NULL, NULL); |
12126 | } | |
12127 | ||
f6ac5f3d PA |
12128 | int |
12129 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12130 | int *remote_errno) | |
12131 | { | |
6b8edb51 | 12132 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12133 | } |
12134 | ||
12e2a5fd | 12135 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12136 | |
f6ac5f3d PA |
12137 | gdb::optional<std::string> |
12138 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12139 | int *remote_errno) | |
b9e7b9c3 UW |
12140 | { |
12141 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12142 | char *p = rs->buf.data (); |
b9e7b9c3 UW |
12143 | char *attachment; |
12144 | int left = get_remote_packet_size (); | |
12145 | int len, attachment_len; | |
12146 | int read_len; | |
b9e7b9c3 | 12147 | |
15a201c8 | 12148 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12149 | return {}; |
15a201c8 | 12150 | |
b9e7b9c3 UW |
12151 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12152 | ||
12153 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12154 | strlen (filename)); | |
12155 | ||
8d64371b | 12156 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12157 | remote_errno, &attachment, |
12158 | &attachment_len); | |
12159 | ||
12160 | if (len < 0) | |
e0d3522b | 12161 | return {}; |
b9e7b9c3 | 12162 | |
e0d3522b | 12163 | std::string ret (len, '\0'); |
b9e7b9c3 | 12164 | |
bc20a4af | 12165 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12166 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12167 | if (read_len != len) |
12168 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12169 | ||
b9e7b9c3 UW |
12170 | return ret; |
12171 | } | |
12172 | ||
12e2a5fd | 12173 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12174 | |
f6ac5f3d PA |
12175 | int |
12176 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12177 | { |
12178 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12179 | char *p = rs->buf.data (); |
0a93529c GB |
12180 | int left = get_remote_packet_size (); |
12181 | int attachment_len, ret; | |
12182 | char *attachment; | |
12183 | struct fio_stat fst; | |
12184 | int read_len; | |
12185 | ||
464b0089 GB |
12186 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12187 | ||
12188 | remote_buffer_add_int (&p, &left, fd); | |
12189 | ||
8d64371b | 12190 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12191 | remote_errno, &attachment, |
12192 | &attachment_len); | |
12193 | if (ret < 0) | |
0a93529c | 12194 | { |
464b0089 GB |
12195 | if (*remote_errno != FILEIO_ENOSYS) |
12196 | return ret; | |
12197 | ||
0a93529c GB |
12198 | /* Strictly we should return -1, ENOSYS here, but when |
12199 | "set sysroot remote:" was implemented in August 2008 | |
12200 | BFD's need for a stat function was sidestepped with | |
12201 | this hack. This was not remedied until March 2015 | |
12202 | so we retain the previous behavior to avoid breaking | |
12203 | compatibility. | |
12204 | ||
12205 | Note that the memset is a March 2015 addition; older | |
12206 | GDBs set st_size *and nothing else* so the structure | |
12207 | would have garbage in all other fields. This might | |
12208 | break something but retaining the previous behavior | |
12209 | here would be just too wrong. */ | |
12210 | ||
12211 | memset (st, 0, sizeof (struct stat)); | |
12212 | st->st_size = INT_MAX; | |
12213 | return 0; | |
12214 | } | |
12215 | ||
0a93529c GB |
12216 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12217 | (gdb_byte *) &fst, sizeof (fst)); | |
12218 | ||
12219 | if (read_len != ret) | |
12220 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12221 | ||
12222 | if (read_len != sizeof (fst)) | |
12223 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12224 | read_len, (int) sizeof (fst)); | |
12225 | ||
12226 | remote_fileio_to_host_stat (&fst, st); | |
12227 | ||
12228 | return 0; | |
12229 | } | |
12230 | ||
12e2a5fd | 12231 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12232 | |
57810aa7 | 12233 | bool |
f6ac5f3d | 12234 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12235 | { |
12236 | /* Valgrind GDB presents itself as a remote target but works | |
12237 | on the local filesystem: it does not implement remote get | |
12238 | and users are not expected to set a sysroot. To handle | |
12239 | this case we treat the remote filesystem as local if the | |
12240 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12241 | does not support vFile:open. */ | |
a3be80c3 | 12242 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12243 | { |
12244 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12245 | ||
12246 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12247 | { | |
12248 | int fd, remote_errno; | |
12249 | ||
12250 | /* Try opening a file to probe support. The supplied | |
12251 | filename is irrelevant, we only care about whether | |
12252 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12253 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12254 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12255 | &remote_errno); |
12256 | ||
12257 | if (fd >= 0) | |
6b8edb51 | 12258 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12259 | |
12260 | ps = packet_support (PACKET_vFile_open); | |
12261 | } | |
12262 | ||
12263 | if (ps == PACKET_DISABLE) | |
12264 | { | |
12265 | static int warning_issued = 0; | |
12266 | ||
12267 | if (!warning_issued) | |
12268 | { | |
12269 | warning (_("remote target does not support file" | |
12270 | " transfer, attempting to access files" | |
12271 | " from local filesystem.")); | |
12272 | warning_issued = 1; | |
12273 | } | |
12274 | ||
57810aa7 | 12275 | return true; |
e3dd7556 GB |
12276 | } |
12277 | } | |
12278 | ||
57810aa7 | 12279 | return false; |
e3dd7556 GB |
12280 | } |
12281 | ||
a6b151f1 DJ |
12282 | static int |
12283 | remote_fileio_errno_to_host (int errnum) | |
12284 | { | |
12285 | switch (errnum) | |
12286 | { | |
12287 | case FILEIO_EPERM: | |
12288 | return EPERM; | |
12289 | case FILEIO_ENOENT: | |
12290 | return ENOENT; | |
12291 | case FILEIO_EINTR: | |
12292 | return EINTR; | |
12293 | case FILEIO_EIO: | |
12294 | return EIO; | |
12295 | case FILEIO_EBADF: | |
12296 | return EBADF; | |
12297 | case FILEIO_EACCES: | |
12298 | return EACCES; | |
12299 | case FILEIO_EFAULT: | |
12300 | return EFAULT; | |
12301 | case FILEIO_EBUSY: | |
12302 | return EBUSY; | |
12303 | case FILEIO_EEXIST: | |
12304 | return EEXIST; | |
12305 | case FILEIO_ENODEV: | |
12306 | return ENODEV; | |
12307 | case FILEIO_ENOTDIR: | |
12308 | return ENOTDIR; | |
12309 | case FILEIO_EISDIR: | |
12310 | return EISDIR; | |
12311 | case FILEIO_EINVAL: | |
12312 | return EINVAL; | |
12313 | case FILEIO_ENFILE: | |
12314 | return ENFILE; | |
12315 | case FILEIO_EMFILE: | |
12316 | return EMFILE; | |
12317 | case FILEIO_EFBIG: | |
12318 | return EFBIG; | |
12319 | case FILEIO_ENOSPC: | |
12320 | return ENOSPC; | |
12321 | case FILEIO_ESPIPE: | |
12322 | return ESPIPE; | |
12323 | case FILEIO_EROFS: | |
12324 | return EROFS; | |
12325 | case FILEIO_ENOSYS: | |
12326 | return ENOSYS; | |
12327 | case FILEIO_ENAMETOOLONG: | |
12328 | return ENAMETOOLONG; | |
12329 | } | |
12330 | return -1; | |
12331 | } | |
12332 | ||
12333 | static char * | |
12334 | remote_hostio_error (int errnum) | |
12335 | { | |
12336 | int host_error = remote_fileio_errno_to_host (errnum); | |
12337 | ||
12338 | if (host_error == -1) | |
12339 | error (_("Unknown remote I/O error %d"), errnum); | |
12340 | else | |
12341 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12342 | } | |
12343 | ||
440b7aec PA |
12344 | /* A RAII wrapper around a remote file descriptor. */ |
12345 | ||
12346 | class scoped_remote_fd | |
a6b151f1 | 12347 | { |
440b7aec | 12348 | public: |
6b8edb51 PA |
12349 | scoped_remote_fd (remote_target *remote, int fd) |
12350 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12351 | { |
12352 | } | |
a6b151f1 | 12353 | |
440b7aec PA |
12354 | ~scoped_remote_fd () |
12355 | { | |
12356 | if (m_fd != -1) | |
12357 | { | |
12358 | try | |
12359 | { | |
12360 | int remote_errno; | |
6b8edb51 | 12361 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12362 | } |
12363 | catch (...) | |
12364 | { | |
12365 | /* Swallow exception before it escapes the dtor. If | |
12366 | something goes wrong, likely the connection is gone, | |
12367 | and there's nothing else that can be done. */ | |
12368 | } | |
12369 | } | |
12370 | } | |
12371 | ||
12372 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12373 | ||
12374 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12375 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12376 | { |
12377 | int fd = m_fd; | |
12378 | m_fd = -1; | |
12379 | return fd; | |
12380 | } | |
12381 | ||
12382 | /* Return the owned file descriptor. */ | |
12383 | int get () const noexcept | |
12384 | { | |
12385 | return m_fd; | |
12386 | } | |
12387 | ||
12388 | private: | |
6b8edb51 PA |
12389 | /* The remote target. */ |
12390 | remote_target *m_remote; | |
12391 | ||
440b7aec PA |
12392 | /* The owned remote I/O file descriptor. */ |
12393 | int m_fd; | |
12394 | }; | |
a6b151f1 DJ |
12395 | |
12396 | void | |
12397 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12398 | { |
12399 | remote_target *remote = get_current_remote_target (); | |
12400 | ||
12401 | if (remote == nullptr) | |
12402 | error (_("command can only be used with remote target")); | |
12403 | ||
12404 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12405 | } | |
12406 | ||
12407 | void | |
12408 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12409 | int from_tty) | |
a6b151f1 | 12410 | { |
440b7aec | 12411 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12412 | int bytes_in_buffer; |
12413 | int saw_eof; | |
12414 | ULONGEST offset; | |
a6b151f1 | 12415 | |
d419f42d | 12416 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12417 | if (file == NULL) |
12418 | perror_with_name (local_file); | |
a6b151f1 | 12419 | |
440b7aec | 12420 | scoped_remote_fd fd |
6b8edb51 PA |
12421 | (this, remote_hostio_open (NULL, |
12422 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12423 | | FILEIO_O_TRUNC), | |
12424 | 0700, 0, &remote_errno)); | |
440b7aec | 12425 | if (fd.get () == -1) |
a6b151f1 DJ |
12426 | remote_hostio_error (remote_errno); |
12427 | ||
12428 | /* Send up to this many bytes at once. They won't all fit in the | |
12429 | remote packet limit, so we'll transfer slightly fewer. */ | |
12430 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12431 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12432 | |
a6b151f1 DJ |
12433 | bytes_in_buffer = 0; |
12434 | saw_eof = 0; | |
12435 | offset = 0; | |
12436 | while (bytes_in_buffer || !saw_eof) | |
12437 | { | |
12438 | if (!saw_eof) | |
12439 | { | |
5ca3b260 | 12440 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12441 | io_size - bytes_in_buffer, |
d419f42d | 12442 | file.get ()); |
a6b151f1 DJ |
12443 | if (bytes == 0) |
12444 | { | |
d419f42d | 12445 | if (ferror (file.get ())) |
a6b151f1 DJ |
12446 | error (_("Error reading %s."), local_file); |
12447 | else | |
12448 | { | |
12449 | /* EOF. Unless there is something still in the | |
12450 | buffer from the last iteration, we are done. */ | |
12451 | saw_eof = 1; | |
12452 | if (bytes_in_buffer == 0) | |
12453 | break; | |
12454 | } | |
12455 | } | |
12456 | } | |
12457 | else | |
12458 | bytes = 0; | |
12459 | ||
12460 | bytes += bytes_in_buffer; | |
12461 | bytes_in_buffer = 0; | |
12462 | ||
5ca3b260 | 12463 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12464 | offset, &remote_errno); |
a6b151f1 DJ |
12465 | |
12466 | if (retcode < 0) | |
12467 | remote_hostio_error (remote_errno); | |
12468 | else if (retcode == 0) | |
12469 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12470 | else if (retcode < bytes) | |
12471 | { | |
12472 | /* Short write. Save the rest of the read data for the next | |
12473 | write. */ | |
12474 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12475 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12476 | } |
12477 | ||
12478 | offset += retcode; | |
12479 | } | |
12480 | ||
6b8edb51 | 12481 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12482 | remote_hostio_error (remote_errno); |
12483 | ||
12484 | if (from_tty) | |
12485 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12486 | } |
12487 | ||
12488 | void | |
12489 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12490 | { |
12491 | remote_target *remote = get_current_remote_target (); | |
12492 | ||
12493 | if (remote == nullptr) | |
12494 | error (_("command can only be used with remote target")); | |
12495 | ||
12496 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12497 | } | |
12498 | ||
12499 | void | |
12500 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12501 | int from_tty) | |
a6b151f1 | 12502 | { |
440b7aec | 12503 | int remote_errno, bytes, io_size; |
a6b151f1 | 12504 | ULONGEST offset; |
a6b151f1 | 12505 | |
440b7aec | 12506 | scoped_remote_fd fd |
6b8edb51 PA |
12507 | (this, remote_hostio_open (NULL, |
12508 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12509 | &remote_errno)); | |
440b7aec | 12510 | if (fd.get () == -1) |
a6b151f1 DJ |
12511 | remote_hostio_error (remote_errno); |
12512 | ||
d419f42d | 12513 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12514 | if (file == NULL) |
12515 | perror_with_name (local_file); | |
a6b151f1 DJ |
12516 | |
12517 | /* Send up to this many bytes at once. They won't all fit in the | |
12518 | remote packet limit, so we'll transfer slightly fewer. */ | |
12519 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12520 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12521 | |
a6b151f1 DJ |
12522 | offset = 0; |
12523 | while (1) | |
12524 | { | |
5ca3b260 | 12525 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12526 | &remote_errno); |
a6b151f1 DJ |
12527 | if (bytes == 0) |
12528 | /* Success, but no bytes, means end-of-file. */ | |
12529 | break; | |
12530 | if (bytes == -1) | |
12531 | remote_hostio_error (remote_errno); | |
12532 | ||
12533 | offset += bytes; | |
12534 | ||
5ca3b260 | 12535 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12536 | if (bytes == 0) |
12537 | perror_with_name (local_file); | |
12538 | } | |
12539 | ||
6b8edb51 | 12540 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12541 | remote_hostio_error (remote_errno); |
12542 | ||
12543 | if (from_tty) | |
12544 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12545 | } |
12546 | ||
12547 | void | |
12548 | remote_file_delete (const char *remote_file, int from_tty) | |
12549 | { | |
6b8edb51 | 12550 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12551 | |
6b8edb51 | 12552 | if (remote == nullptr) |
a6b151f1 DJ |
12553 | error (_("command can only be used with remote target")); |
12554 | ||
6b8edb51 PA |
12555 | remote->remote_file_delete (remote_file, from_tty); |
12556 | } | |
12557 | ||
12558 | void | |
12559 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12560 | { | |
12561 | int retcode, remote_errno; | |
12562 | ||
12563 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12564 | if (retcode == -1) |
12565 | remote_hostio_error (remote_errno); | |
12566 | ||
12567 | if (from_tty) | |
12568 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12569 | } | |
12570 | ||
12571 | static void | |
ac88e2de | 12572 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12573 | { |
d1a41061 PP |
12574 | if (args == NULL) |
12575 | error_no_arg (_("file to put")); | |
12576 | ||
773a1edc | 12577 | gdb_argv argv (args); |
a6b151f1 DJ |
12578 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12579 | error (_("Invalid parameters to remote put")); | |
12580 | ||
12581 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12582 | } |
12583 | ||
12584 | static void | |
ac88e2de | 12585 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12586 | { |
d1a41061 PP |
12587 | if (args == NULL) |
12588 | error_no_arg (_("file to get")); | |
12589 | ||
773a1edc | 12590 | gdb_argv argv (args); |
a6b151f1 DJ |
12591 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12592 | error (_("Invalid parameters to remote get")); | |
12593 | ||
12594 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12595 | } |
12596 | ||
12597 | static void | |
ac88e2de | 12598 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12599 | { |
d1a41061 PP |
12600 | if (args == NULL) |
12601 | error_no_arg (_("file to delete")); | |
12602 | ||
773a1edc | 12603 | gdb_argv argv (args); |
a6b151f1 DJ |
12604 | if (argv[0] == NULL || argv[1] != NULL) |
12605 | error (_("Invalid parameters to remote delete")); | |
12606 | ||
12607 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12608 | } |
12609 | ||
12610 | static void | |
981a3fb3 | 12611 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12612 | { |
635c7e8a | 12613 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12614 | } |
12615 | ||
57810aa7 | 12616 | bool |
f6ac5f3d | 12617 | remote_target::can_execute_reverse () |
b2175913 | 12618 | { |
4082afcc PA |
12619 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12620 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12621 | return true; |
40ab02ce | 12622 | else |
57810aa7 | 12623 | return false; |
b2175913 MS |
12624 | } |
12625 | ||
57810aa7 | 12626 | bool |
f6ac5f3d | 12627 | remote_target::supports_non_stop () |
74531fed | 12628 | { |
57810aa7 | 12629 | return true; |
74531fed PA |
12630 | } |
12631 | ||
57810aa7 | 12632 | bool |
f6ac5f3d | 12633 | remote_target::supports_disable_randomization () |
03583c20 UW |
12634 | { |
12635 | /* Only supported in extended mode. */ | |
57810aa7 | 12636 | return false; |
03583c20 UW |
12637 | } |
12638 | ||
57810aa7 | 12639 | bool |
f6ac5f3d | 12640 | remote_target::supports_multi_process () |
8a305172 PA |
12641 | { |
12642 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12643 | |
8020350c | 12644 | return remote_multi_process_p (rs); |
8a305172 PA |
12645 | } |
12646 | ||
70221824 | 12647 | static int |
f6ac5f3d | 12648 | remote_supports_cond_tracepoints () |
782b2b07 | 12649 | { |
4082afcc | 12650 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12651 | } |
12652 | ||
57810aa7 | 12653 | bool |
f6ac5f3d | 12654 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12655 | { |
4082afcc | 12656 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12657 | } |
12658 | ||
70221824 | 12659 | static int |
f6ac5f3d | 12660 | remote_supports_fast_tracepoints () |
7a697b8d | 12661 | { |
4082afcc | 12662 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12663 | } |
12664 | ||
0fb4aa4b | 12665 | static int |
f6ac5f3d | 12666 | remote_supports_static_tracepoints () |
0fb4aa4b | 12667 | { |
4082afcc | 12668 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12669 | } |
12670 | ||
1e4d1764 | 12671 | static int |
f6ac5f3d | 12672 | remote_supports_install_in_trace () |
1e4d1764 | 12673 | { |
4082afcc | 12674 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12675 | } |
12676 | ||
57810aa7 | 12677 | bool |
f6ac5f3d | 12678 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12679 | { |
4082afcc PA |
12680 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12681 | == PACKET_ENABLE); | |
d248b706 KY |
12682 | } |
12683 | ||
57810aa7 | 12684 | bool |
f6ac5f3d | 12685 | remote_target::supports_string_tracing () |
3065dfb6 | 12686 | { |
4082afcc | 12687 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12688 | } |
12689 | ||
57810aa7 | 12690 | bool |
f6ac5f3d | 12691 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12692 | { |
4082afcc | 12693 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12694 | } |
12695 | ||
f6ac5f3d PA |
12696 | void |
12697 | remote_target::trace_init () | |
35b1e5cc | 12698 | { |
b6bb3468 PA |
12699 | struct remote_state *rs = get_remote_state (); |
12700 | ||
35b1e5cc | 12701 | putpkt ("QTinit"); |
b6bb3468 | 12702 | remote_get_noisy_reply (); |
8d64371b | 12703 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
12704 | error (_("Target does not support this command.")); |
12705 | } | |
12706 | ||
409873ef SS |
12707 | /* Recursive routine to walk through command list including loops, and |
12708 | download packets for each command. */ | |
12709 | ||
6b8edb51 PA |
12710 | void |
12711 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
12712 | struct command_line *cmds) | |
409873ef SS |
12713 | { |
12714 | struct remote_state *rs = get_remote_state (); | |
12715 | struct command_line *cmd; | |
12716 | ||
12717 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12718 | { | |
0df8b418 | 12719 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12720 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12721 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
12722 | rs->buf.data () + strlen (rs->buf.data ()), |
12723 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12724 | putpkt (rs->buf); |
b6bb3468 | 12725 | remote_get_noisy_reply (); |
8d64371b | 12726 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12727 | warning (_("Target does not support source download.")); |
12728 | ||
12729 | if (cmd->control_type == while_control | |
12730 | || cmd->control_type == while_stepping_control) | |
12731 | { | |
12973681 | 12732 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12733 | |
0df8b418 | 12734 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12735 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12736 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
12737 | rs->buf.data () + strlen (rs->buf.data ()), |
12738 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12739 | putpkt (rs->buf); |
b6bb3468 | 12740 | remote_get_noisy_reply (); |
8d64371b | 12741 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12742 | warning (_("Target does not support source download.")); |
12743 | } | |
12744 | } | |
12745 | } | |
12746 | ||
f6ac5f3d PA |
12747 | void |
12748 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
12749 | { |
12750 | CORE_ADDR tpaddr; | |
409873ef | 12751 | char addrbuf[40]; |
b44ec619 SM |
12752 | std::vector<std::string> tdp_actions; |
12753 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12754 | char *pkt; |
e8ba3115 | 12755 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12756 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12757 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 12758 | int ret; |
ff36536c | 12759 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
12760 | size_t size_left; |
12761 | ||
12762 | /* We use a buffer other than rs->buf because we'll build strings | |
12763 | across multiple statements, and other statements in between could | |
12764 | modify rs->buf. */ | |
12765 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 12766 | |
dc673c81 | 12767 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12768 | |
12769 | tpaddr = loc->address; | |
12770 | sprintf_vma (addrbuf, tpaddr); | |
3df3a985 PFC |
12771 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
12772 | b->number, addrbuf, /* address */ | |
12773 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12774 | t->step_count, t->pass_count); | |
12775 | ||
12776 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12777 | error ("%s", err_msg); |
3df3a985 | 12778 | |
e8ba3115 YQ |
12779 | /* Fast tracepoints are mostly handled by the target, but we can |
12780 | tell the target how big of an instruction block should be moved | |
12781 | around. */ | |
12782 | if (b->type == bp_fast_tracepoint) | |
12783 | { | |
12784 | /* Only test for support at download time; we may not know | |
12785 | target capabilities at definition time. */ | |
12786 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12787 | { |
6b940e6a PL |
12788 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12789 | NULL)) | |
3df3a985 PFC |
12790 | { |
12791 | size_left = buf.size () - strlen (buf.data ()); | |
12792 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12793 | size_left, ":F%x", | |
12794 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
12795 | ||
12796 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12797 | error ("%s", err_msg); |
3df3a985 | 12798 | } |
35b1e5cc | 12799 | else |
e8ba3115 YQ |
12800 | /* If it passed validation at definition but fails now, |
12801 | something is very wrong. */ | |
12802 | internal_error (__FILE__, __LINE__, | |
12803 | _("Fast tracepoint not " | |
12804 | "valid during download")); | |
35b1e5cc | 12805 | } |
e8ba3115 YQ |
12806 | else |
12807 | /* Fast tracepoints are functionally identical to regular | |
12808 | tracepoints, so don't take lack of support as a reason to | |
12809 | give up on the trace run. */ | |
12810 | warning (_("Target does not support fast tracepoints, " | |
12811 | "downloading %d as regular tracepoint"), b->number); | |
12812 | } | |
12813 | else if (b->type == bp_static_tracepoint) | |
12814 | { | |
12815 | /* Only test for support at download time; we may not know | |
12816 | target capabilities at definition time. */ | |
12817 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12818 | { |
e8ba3115 | 12819 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12820 | |
e8ba3115 | 12821 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
12822 | { |
12823 | size_left = buf.size () - strlen (buf.data ()); | |
12824 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12825 | size_left, ":S"); | |
12826 | ||
12827 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12828 | error ("%s", err_msg); |
3df3a985 | 12829 | } |
0fb4aa4b | 12830 | else |
e8ba3115 | 12831 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12832 | } |
e8ba3115 YQ |
12833 | else |
12834 | /* Fast tracepoints are functionally identical to regular | |
12835 | tracepoints, so don't take lack of support as a reason | |
12836 | to give up on the trace run. */ | |
12837 | error (_("Target does not support static tracepoints")); | |
12838 | } | |
12839 | /* If the tracepoint has a conditional, make it into an agent | |
12840 | expression and append to the definition. */ | |
12841 | if (loc->cond) | |
12842 | { | |
12843 | /* Only test support at download time, we may not know target | |
12844 | capabilities at definition time. */ | |
12845 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12846 | { |
3df3a985 PFC |
12847 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
12848 | loc->cond.get ()); | |
12849 | ||
12850 | size_left = buf.size () - strlen (buf.data ()); | |
12851 | ||
12852 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12853 | size_left, ":X%x,", aexpr->len); | |
12854 | ||
12855 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12856 | error ("%s", err_msg); |
3df3a985 PFC |
12857 | |
12858 | size_left = buf.size () - strlen (buf.data ()); | |
12859 | ||
12860 | /* Two bytes to encode each aexpr byte, plus the terminating | |
12861 | null byte. */ | |
12862 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 12863 | error ("%s", err_msg); |
3df3a985 PFC |
12864 | |
12865 | pkt = buf.data () + strlen (buf.data ()); | |
12866 | ||
b44ec619 | 12867 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12868 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12869 | *pkt = '\0'; | |
35b1e5cc | 12870 | } |
e8ba3115 YQ |
12871 | else |
12872 | warning (_("Target does not support conditional tracepoints, " | |
12873 | "ignoring tp %d cond"), b->number); | |
12874 | } | |
35b1e5cc | 12875 | |
d9b3f62e | 12876 | if (b->commands || *default_collect) |
3df3a985 PFC |
12877 | { |
12878 | size_left = buf.size () - strlen (buf.data ()); | |
12879 | ||
12880 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12881 | size_left, "-"); | |
12882 | ||
12883 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12884 | error ("%s", err_msg); |
3df3a985 PFC |
12885 | } |
12886 | ||
12887 | putpkt (buf.data ()); | |
b6bb3468 | 12888 | remote_get_noisy_reply (); |
8d64371b | 12889 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 12890 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12891 | |
e8ba3115 | 12892 | /* do_single_steps (t); */ |
b44ec619 SM |
12893 | for (auto action_it = tdp_actions.begin (); |
12894 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12895 | { |
b44ec619 SM |
12896 | QUIT; /* Allow user to bail out with ^C. */ |
12897 | ||
aa6f3694 | 12898 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
12899 | || !stepping_actions.empty ()); |
12900 | ||
3df3a985 PFC |
12901 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
12902 | b->number, addrbuf, /* address */ | |
12903 | action_it->c_str (), | |
12904 | has_more ? '-' : 0); | |
12905 | ||
12906 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12907 | error ("%s", err_msg); |
3df3a985 PFC |
12908 | |
12909 | putpkt (buf.data ()); | |
b44ec619 | 12910 | remote_get_noisy_reply (); |
8d64371b | 12911 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 12912 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 12913 | } |
409873ef | 12914 | |
05abfc39 PFC |
12915 | for (auto action_it = stepping_actions.begin (); |
12916 | action_it != stepping_actions.end (); action_it++) | |
12917 | { | |
12918 | QUIT; /* Allow user to bail out with ^C. */ | |
12919 | ||
12920 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 12921 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 12922 | |
3df3a985 PFC |
12923 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
12924 | b->number, addrbuf, /* address */ | |
12925 | is_first ? "S" : "", | |
12926 | action_it->c_str (), | |
12927 | has_more ? "-" : ""); | |
12928 | ||
12929 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12930 | error ("%s", err_msg); |
3df3a985 PFC |
12931 | |
12932 | putpkt (buf.data ()); | |
05abfc39 | 12933 | remote_get_noisy_reply (); |
8d64371b | 12934 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
12935 | error (_("Error on target while setting tracepoints.")); |
12936 | } | |
b44ec619 | 12937 | |
4082afcc | 12938 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12939 | { |
f00aae0f | 12940 | if (b->location != NULL) |
409873ef | 12941 | { |
3df3a985 PFC |
12942 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
12943 | ||
12944 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12945 | error ("%s", err_msg); |
3df3a985 | 12946 | |
f00aae0f | 12947 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12948 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
12949 | buf.data () + strlen (buf.data ()), |
12950 | buf.size () - strlen (buf.data ())); | |
12951 | putpkt (buf.data ()); | |
b6bb3468 | 12952 | remote_get_noisy_reply (); |
8d64371b | 12953 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 12954 | warning (_("Target does not support source download.")); |
409873ef | 12955 | } |
e8ba3115 YQ |
12956 | if (b->cond_string) |
12957 | { | |
3df3a985 PFC |
12958 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
12959 | ||
12960 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12961 | error ("%s", err_msg); |
3df3a985 | 12962 | |
e8ba3115 | 12963 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
12964 | "cond", b->cond_string, |
12965 | buf.data () + strlen (buf.data ()), | |
12966 | buf.size () - strlen (buf.data ())); | |
12967 | putpkt (buf.data ()); | |
b6bb3468 | 12968 | remote_get_noisy_reply (); |
8d64371b | 12969 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
12970 | warning (_("Target does not support source download.")); |
12971 | } | |
12972 | remote_download_command_source (b->number, loc->address, | |
12973 | breakpoint_commands (b)); | |
35b1e5cc | 12974 | } |
35b1e5cc SS |
12975 | } |
12976 | ||
57810aa7 | 12977 | bool |
f6ac5f3d | 12978 | remote_target::can_download_tracepoint () |
1e4d1764 | 12979 | { |
1e51243a PA |
12980 | struct remote_state *rs = get_remote_state (); |
12981 | struct trace_status *ts; | |
12982 | int status; | |
12983 | ||
12984 | /* Don't try to install tracepoints until we've relocated our | |
12985 | symbols, and fetched and merged the target's tracepoint list with | |
12986 | ours. */ | |
12987 | if (rs->starting_up) | |
57810aa7 | 12988 | return false; |
1e51243a PA |
12989 | |
12990 | ts = current_trace_status (); | |
f6ac5f3d | 12991 | status = get_trace_status (ts); |
1e4d1764 YQ |
12992 | |
12993 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 12994 | return false; |
1e4d1764 YQ |
12995 | |
12996 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12997 | installing tracepoint in trace, we have to return. */ | |
12998 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 12999 | return false; |
1e4d1764 | 13000 | |
57810aa7 | 13001 | return true; |
1e4d1764 YQ |
13002 | } |
13003 | ||
13004 | ||
f6ac5f3d PA |
13005 | void |
13006 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13007 | { |
13008 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13009 | char *p; |
35b1e5cc | 13010 | |
8d64371b | 13011 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13012 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13013 | tsv.builtin); | |
8d64371b TT |
13014 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13015 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13016 | >= get_remote_packet_size ()) | |
00bf0b85 | 13017 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13018 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13019 | *p++ = '\0'; |
35b1e5cc | 13020 | putpkt (rs->buf); |
b6bb3468 | 13021 | remote_get_noisy_reply (); |
8d64371b | 13022 | if (rs->buf[0] == '\0') |
ad91cd99 | 13023 | error (_("Target does not support this command.")); |
8d64371b | 13024 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13025 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13026 | } |
13027 | ||
f6ac5f3d PA |
13028 | void |
13029 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13030 | { |
13031 | struct remote_state *rs = get_remote_state (); | |
13032 | char addr_buf[40]; | |
13033 | ||
13034 | sprintf_vma (addr_buf, location->address); | |
8d64371b | 13035 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
bba74b36 | 13036 | location->owner->number, addr_buf); |
d248b706 | 13037 | putpkt (rs->buf); |
b6bb3468 | 13038 | remote_get_noisy_reply (); |
8d64371b | 13039 | if (rs->buf[0] == '\0') |
d248b706 | 13040 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13041 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13042 | error (_("Error on target while enabling tracepoint.")); |
13043 | } | |
13044 | ||
f6ac5f3d PA |
13045 | void |
13046 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13047 | { |
13048 | struct remote_state *rs = get_remote_state (); | |
13049 | char addr_buf[40]; | |
13050 | ||
13051 | sprintf_vma (addr_buf, location->address); | |
8d64371b | 13052 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
bba74b36 | 13053 | location->owner->number, addr_buf); |
d248b706 | 13054 | putpkt (rs->buf); |
b6bb3468 | 13055 | remote_get_noisy_reply (); |
8d64371b | 13056 | if (rs->buf[0] == '\0') |
d248b706 | 13057 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13058 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13059 | error (_("Error on target while disabling tracepoint.")); |
13060 | } | |
13061 | ||
f6ac5f3d PA |
13062 | void |
13063 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13064 | { |
13065 | asection *s; | |
81b9b86e | 13066 | bfd *abfd = NULL; |
35b1e5cc | 13067 | bfd_size_type size; |
608bcef2 | 13068 | bfd_vma vma; |
35b1e5cc | 13069 | int anysecs = 0; |
c2fa21f1 | 13070 | int offset = 0; |
35b1e5cc SS |
13071 | |
13072 | if (!exec_bfd) | |
13073 | return; /* No information to give. */ | |
13074 | ||
b6bb3468 PA |
13075 | struct remote_state *rs = get_remote_state (); |
13076 | ||
8d64371b TT |
13077 | strcpy (rs->buf.data (), "QTro"); |
13078 | offset = strlen (rs->buf.data ()); | |
35b1e5cc SS |
13079 | for (s = exec_bfd->sections; s; s = s->next) |
13080 | { | |
13081 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13082 | int sec_length; |
35b1e5cc SS |
13083 | |
13084 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13085 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13086 | (s->flags & SEC_READONLY) == 0) |
13087 | continue; | |
13088 | ||
13089 | anysecs = 1; | |
81b9b86e | 13090 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 13091 | size = bfd_get_section_size (s); |
608bcef2 HZ |
13092 | sprintf_vma (tmp1, vma); |
13093 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13094 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13095 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13096 | { |
4082afcc | 13097 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13098 | warning (_("\ |
c2fa21f1 HZ |
13099 | Too many sections for read-only sections definition packet.")); |
13100 | break; | |
13101 | } | |
8d64371b | 13102 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13103 | tmp1, tmp2); |
c2fa21f1 | 13104 | offset += sec_length; |
35b1e5cc SS |
13105 | } |
13106 | if (anysecs) | |
13107 | { | |
b6bb3468 | 13108 | putpkt (rs->buf); |
8d64371b | 13109 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13110 | } |
13111 | } | |
13112 | ||
f6ac5f3d PA |
13113 | void |
13114 | remote_target::trace_start () | |
35b1e5cc | 13115 | { |
b6bb3468 PA |
13116 | struct remote_state *rs = get_remote_state (); |
13117 | ||
35b1e5cc | 13118 | putpkt ("QTStart"); |
b6bb3468 | 13119 | remote_get_noisy_reply (); |
8d64371b | 13120 | if (rs->buf[0] == '\0') |
ad91cd99 | 13121 | error (_("Target does not support this command.")); |
8d64371b TT |
13122 | if (strcmp (rs->buf.data (), "OK") != 0) |
13123 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13124 | } |
13125 | ||
f6ac5f3d PA |
13126 | int |
13127 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13128 | { |
953b98d1 | 13129 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13130 | char *p = NULL; |
0df8b418 | 13131 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 13132 | extern int trace_regblock_size; |
bd3eecc3 | 13133 | enum packet_result result; |
b6bb3468 | 13134 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13135 | |
4082afcc | 13136 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13137 | return -1; |
a744cf53 | 13138 | |
5cd63fda | 13139 | trace_regblock_size |
9d6eea31 | 13140 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13141 | |
049dc89b JK |
13142 | putpkt ("qTStatus"); |
13143 | ||
492d29ea | 13144 | TRY |
67f41397 | 13145 | { |
b6bb3468 | 13146 | p = remote_get_noisy_reply (); |
67f41397 | 13147 | } |
492d29ea | 13148 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 13149 | { |
598d3636 JK |
13150 | if (ex.error != TARGET_CLOSE_ERROR) |
13151 | { | |
13152 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13153 | return -1; | |
13154 | } | |
13155 | throw_exception (ex); | |
67f41397 | 13156 | } |
492d29ea | 13157 | END_CATCH |
00bf0b85 | 13158 | |
bd3eecc3 PA |
13159 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13160 | ||
00bf0b85 | 13161 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13162 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13163 | return -1; |
35b1e5cc | 13164 | |
00bf0b85 | 13165 | /* We're working with a live target. */ |
f5911ea1 | 13166 | ts->filename = NULL; |
00bf0b85 | 13167 | |
00bf0b85 | 13168 | if (*p++ != 'T') |
8d64371b | 13169 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13170 | |
84cebc4a YQ |
13171 | /* Function 'parse_trace_status' sets default value of each field of |
13172 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13173 | parse_trace_status (p, ts); |
13174 | ||
13175 | return ts->running; | |
35b1e5cc SS |
13176 | } |
13177 | ||
f6ac5f3d PA |
13178 | void |
13179 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13180 | struct uploaded_tp *utp) | |
f196051f SS |
13181 | { |
13182 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13183 | char *reply; |
13184 | struct bp_location *loc; | |
13185 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13186 | size_t size = get_remote_packet_size (); |
f196051f SS |
13187 | |
13188 | if (tp) | |
13189 | { | |
c1fc2657 | 13190 | tp->hit_count = 0; |
f196051f | 13191 | tp->traceframe_usage = 0; |
c1fc2657 | 13192 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13193 | { |
13194 | /* If the tracepoint was never downloaded, don't go asking for | |
13195 | any status. */ | |
13196 | if (tp->number_on_target == 0) | |
13197 | continue; | |
8d64371b | 13198 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13199 | phex_nz (loc->address, 0)); |
f196051f | 13200 | putpkt (rs->buf); |
b6bb3468 | 13201 | reply = remote_get_noisy_reply (); |
f196051f SS |
13202 | if (reply && *reply) |
13203 | { | |
13204 | if (*reply == 'V') | |
13205 | parse_tracepoint_status (reply + 1, bp, utp); | |
13206 | } | |
13207 | } | |
13208 | } | |
13209 | else if (utp) | |
13210 | { | |
13211 | utp->hit_count = 0; | |
13212 | utp->traceframe_usage = 0; | |
8d64371b | 13213 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13214 | phex_nz (utp->addr, 0)); |
f196051f | 13215 | putpkt (rs->buf); |
b6bb3468 | 13216 | reply = remote_get_noisy_reply (); |
f196051f SS |
13217 | if (reply && *reply) |
13218 | { | |
13219 | if (*reply == 'V') | |
13220 | parse_tracepoint_status (reply + 1, bp, utp); | |
13221 | } | |
13222 | } | |
13223 | } | |
13224 | ||
f6ac5f3d PA |
13225 | void |
13226 | remote_target::trace_stop () | |
35b1e5cc | 13227 | { |
b6bb3468 PA |
13228 | struct remote_state *rs = get_remote_state (); |
13229 | ||
35b1e5cc | 13230 | putpkt ("QTStop"); |
b6bb3468 | 13231 | remote_get_noisy_reply (); |
8d64371b | 13232 | if (rs->buf[0] == '\0') |
ad91cd99 | 13233 | error (_("Target does not support this command.")); |
8d64371b TT |
13234 | if (strcmp (rs->buf.data (), "OK") != 0) |
13235 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13236 | } |
13237 | ||
f6ac5f3d PA |
13238 | int |
13239 | remote_target::trace_find (enum trace_find_type type, int num, | |
13240 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13241 | int *tpp) | |
35b1e5cc SS |
13242 | { |
13243 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13244 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13245 | char *p, *reply; |
13246 | int target_frameno = -1, target_tracept = -1; | |
13247 | ||
e6e4e701 PA |
13248 | /* Lookups other than by absolute frame number depend on the current |
13249 | trace selected, so make sure it is correct on the remote end | |
13250 | first. */ | |
13251 | if (type != tfind_number) | |
13252 | set_remote_traceframe (); | |
13253 | ||
8d64371b | 13254 | p = rs->buf.data (); |
35b1e5cc SS |
13255 | strcpy (p, "QTFrame:"); |
13256 | p = strchr (p, '\0'); | |
13257 | switch (type) | |
13258 | { | |
13259 | case tfind_number: | |
bba74b36 | 13260 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13261 | break; |
13262 | case tfind_pc: | |
bba74b36 | 13263 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13264 | break; |
13265 | case tfind_tp: | |
bba74b36 | 13266 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13267 | break; |
13268 | case tfind_range: | |
bba74b36 YQ |
13269 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13270 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13271 | break; |
13272 | case tfind_outside: | |
bba74b36 YQ |
13273 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13274 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13275 | break; |
13276 | default: | |
9b20d036 | 13277 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13278 | } |
13279 | ||
13280 | putpkt (rs->buf); | |
b6bb3468 | 13281 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13282 | if (*reply == '\0') |
13283 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13284 | |
13285 | while (reply && *reply) | |
13286 | switch (*reply) | |
13287 | { | |
13288 | case 'F': | |
f197e0f1 VP |
13289 | p = ++reply; |
13290 | target_frameno = (int) strtol (p, &reply, 16); | |
13291 | if (reply == p) | |
13292 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13293 | /* Don't update our remote traceframe number cache on failure |
13294 | to select a remote traceframe. */ | |
f197e0f1 VP |
13295 | if (target_frameno == -1) |
13296 | return -1; | |
35b1e5cc SS |
13297 | break; |
13298 | case 'T': | |
f197e0f1 VP |
13299 | p = ++reply; |
13300 | target_tracept = (int) strtol (p, &reply, 16); | |
13301 | if (reply == p) | |
13302 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13303 | break; |
13304 | case 'O': /* "OK"? */ | |
13305 | if (reply[1] == 'K' && reply[2] == '\0') | |
13306 | reply += 2; | |
13307 | else | |
13308 | error (_("Bogus reply from target: %s"), reply); | |
13309 | break; | |
13310 | default: | |
13311 | error (_("Bogus reply from target: %s"), reply); | |
13312 | } | |
13313 | if (tpp) | |
13314 | *tpp = target_tracept; | |
e6e4e701 | 13315 | |
262e1174 | 13316 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13317 | return target_frameno; |
13318 | } | |
13319 | ||
57810aa7 | 13320 | bool |
f6ac5f3d | 13321 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13322 | { |
13323 | struct remote_state *rs = get_remote_state (); | |
13324 | char *reply; | |
13325 | ULONGEST uval; | |
13326 | ||
e6e4e701 PA |
13327 | set_remote_traceframe (); |
13328 | ||
8d64371b | 13329 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13330 | putpkt (rs->buf); |
b6bb3468 | 13331 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13332 | if (reply && *reply) |
13333 | { | |
13334 | if (*reply == 'V') | |
13335 | { | |
13336 | unpack_varlen_hex (reply + 1, &uval); | |
13337 | *val = (LONGEST) uval; | |
57810aa7 | 13338 | return true; |
35b1e5cc SS |
13339 | } |
13340 | } | |
57810aa7 | 13341 | return false; |
35b1e5cc SS |
13342 | } |
13343 | ||
f6ac5f3d PA |
13344 | int |
13345 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13346 | { |
13347 | struct remote_state *rs = get_remote_state (); | |
13348 | char *p, *reply; | |
13349 | ||
8d64371b | 13350 | p = rs->buf.data (); |
00bf0b85 SS |
13351 | strcpy (p, "QTSave:"); |
13352 | p += strlen (p); | |
8d64371b TT |
13353 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13354 | >= get_remote_packet_size ()) | |
00bf0b85 | 13355 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13356 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13357 | *p++ = '\0'; |
13358 | putpkt (rs->buf); | |
b6bb3468 | 13359 | reply = remote_get_noisy_reply (); |
d6c5869f | 13360 | if (*reply == '\0') |
ad91cd99 PA |
13361 | error (_("Target does not support this command.")); |
13362 | if (strcmp (reply, "OK") != 0) | |
13363 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13364 | return 0; |
13365 | } | |
13366 | ||
13367 | /* This is basically a memory transfer, but needs to be its own packet | |
13368 | because we don't know how the target actually organizes its trace | |
13369 | memory, plus we want to be able to ask for as much as possible, but | |
13370 | not be unhappy if we don't get as much as we ask for. */ | |
13371 | ||
f6ac5f3d PA |
13372 | LONGEST |
13373 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13374 | { |
13375 | struct remote_state *rs = get_remote_state (); | |
13376 | char *reply; | |
13377 | char *p; | |
13378 | int rslt; | |
13379 | ||
8d64371b | 13380 | p = rs->buf.data (); |
00bf0b85 SS |
13381 | strcpy (p, "qTBuffer:"); |
13382 | p += strlen (p); | |
13383 | p += hexnumstr (p, offset); | |
13384 | *p++ = ','; | |
13385 | p += hexnumstr (p, len); | |
13386 | *p++ = '\0'; | |
13387 | ||
13388 | putpkt (rs->buf); | |
b6bb3468 | 13389 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13390 | if (reply && *reply) |
13391 | { | |
13392 | /* 'l' by itself means we're at the end of the buffer and | |
13393 | there is nothing more to get. */ | |
13394 | if (*reply == 'l') | |
13395 | return 0; | |
13396 | ||
13397 | /* Convert the reply into binary. Limit the number of bytes to | |
13398 | convert according to our passed-in buffer size, rather than | |
13399 | what was returned in the packet; if the target is | |
13400 | unexpectedly generous and gives us a bigger reply than we | |
13401 | asked for, we don't want to crash. */ | |
b6bb3468 | 13402 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13403 | return rslt; |
13404 | } | |
13405 | ||
13406 | /* Something went wrong, flag as an error. */ | |
13407 | return -1; | |
13408 | } | |
13409 | ||
f6ac5f3d PA |
13410 | void |
13411 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13412 | { |
13413 | struct remote_state *rs = get_remote_state (); | |
13414 | ||
4082afcc | 13415 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13416 | { |
ad91cd99 PA |
13417 | char *reply; |
13418 | ||
8d64371b TT |
13419 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13420 | "QTDisconnected:%x", val); | |
33da3f1c | 13421 | putpkt (rs->buf); |
b6bb3468 | 13422 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13423 | if (*reply == '\0') |
33da3f1c | 13424 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13425 | if (strcmp (reply, "OK") != 0) |
13426 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13427 | } |
13428 | else if (val) | |
13429 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13430 | } |
13431 | ||
f6ac5f3d PA |
13432 | int |
13433 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c VP |
13434 | { |
13435 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 13436 | |
7aabaf9d SM |
13437 | if (info != NULL && info->priv != NULL) |
13438 | return get_remote_thread_info (info)->core; | |
13439 | ||
dc146f7c VP |
13440 | return -1; |
13441 | } | |
13442 | ||
f6ac5f3d PA |
13443 | void |
13444 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13445 | { |
13446 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13447 | char *reply; |
4daf5ac0 | 13448 | |
8d64371b TT |
13449 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13450 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13451 | putpkt (rs->buf); |
b6bb3468 | 13452 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13453 | if (*reply == '\0') |
4daf5ac0 | 13454 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13455 | if (strcmp (reply, "OK") != 0) |
13456 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13457 | } |
13458 | ||
f6ac5f3d PA |
13459 | traceframe_info_up |
13460 | remote_target::traceframe_info () | |
b3b9301e | 13461 | { |
9018be22 | 13462 | gdb::optional<gdb::char_vector> text |
8b88a78e | 13463 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13464 | NULL); |
9018be22 SM |
13465 | if (text) |
13466 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13467 | |
13468 | return NULL; | |
13469 | } | |
13470 | ||
405f8e94 SS |
13471 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13472 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13473 | if the packet is not supported, and 0 if the minimum instruction | |
13474 | length is unknown. */ | |
13475 | ||
f6ac5f3d PA |
13476 | int |
13477 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13478 | { |
13479 | struct remote_state *rs = get_remote_state (); | |
13480 | char *reply; | |
13481 | ||
e886a173 PA |
13482 | /* If we're not debugging a process yet, the IPA can't be |
13483 | loaded. */ | |
13484 | if (!target_has_execution) | |
13485 | return 0; | |
13486 | ||
13487 | /* Make sure the remote is pointing at the right process. */ | |
13488 | set_general_process (); | |
13489 | ||
8d64371b | 13490 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13491 | putpkt (rs->buf); |
b6bb3468 | 13492 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13493 | if (*reply == '\0') |
13494 | return -1; | |
13495 | else | |
13496 | { | |
13497 | ULONGEST min_insn_len; | |
13498 | ||
13499 | unpack_varlen_hex (reply, &min_insn_len); | |
13500 | ||
13501 | return (int) min_insn_len; | |
13502 | } | |
13503 | } | |
13504 | ||
f6ac5f3d PA |
13505 | void |
13506 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13507 | { |
4082afcc | 13508 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13509 | { |
13510 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13511 | char *buf = rs->buf.data (); |
13512 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13513 | enum packet_result result; |
13514 | ||
13515 | gdb_assert (val >= 0 || val == -1); | |
13516 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13517 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13518 | if (val < 0) | |
13519 | { | |
13520 | *buf++ = '-'; | |
13521 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13522 | } | |
13523 | else | |
13524 | buf += hexnumstr (buf, (ULONGEST) val); | |
13525 | ||
13526 | putpkt (rs->buf); | |
b6bb3468 | 13527 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13528 | result = packet_ok (rs->buf, |
13529 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13530 | ||
13531 | if (result != PACKET_OK) | |
8d64371b | 13532 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13533 | } |
13534 | } | |
13535 | ||
57810aa7 | 13536 | bool |
f6ac5f3d PA |
13537 | remote_target::set_trace_notes (const char *user, const char *notes, |
13538 | const char *stop_notes) | |
f196051f SS |
13539 | { |
13540 | struct remote_state *rs = get_remote_state (); | |
13541 | char *reply; | |
8d64371b TT |
13542 | char *buf = rs->buf.data (); |
13543 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13544 | int nbytes; |
13545 | ||
13546 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13547 | if (user) | |
13548 | { | |
13549 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13550 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13551 | buf += 2 * nbytes; |
13552 | *buf++ = ';'; | |
13553 | } | |
13554 | if (notes) | |
13555 | { | |
13556 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13557 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13558 | buf += 2 * nbytes; |
13559 | *buf++ = ';'; | |
13560 | } | |
13561 | if (stop_notes) | |
13562 | { | |
13563 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13564 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13565 | buf += 2 * nbytes; |
13566 | *buf++ = ';'; | |
13567 | } | |
13568 | /* Ensure the buffer is terminated. */ | |
13569 | *buf = '\0'; | |
13570 | ||
13571 | putpkt (rs->buf); | |
b6bb3468 | 13572 | reply = remote_get_noisy_reply (); |
f196051f | 13573 | if (*reply == '\0') |
57810aa7 | 13574 | return false; |
f196051f SS |
13575 | |
13576 | if (strcmp (reply, "OK") != 0) | |
13577 | error (_("Bogus reply from target: %s"), reply); | |
13578 | ||
57810aa7 | 13579 | return true; |
f196051f SS |
13580 | } |
13581 | ||
57810aa7 PA |
13582 | bool |
13583 | remote_target::use_agent (bool use) | |
d1feda86 | 13584 | { |
4082afcc | 13585 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13586 | { |
13587 | struct remote_state *rs = get_remote_state (); | |
13588 | ||
13589 | /* If the stub supports QAgent. */ | |
8d64371b | 13590 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13591 | putpkt (rs->buf); |
8d64371b | 13592 | getpkt (&rs->buf, 0); |
d1feda86 | 13593 | |
8d64371b | 13594 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13595 | { |
f6ac5f3d | 13596 | ::use_agent = use; |
57810aa7 | 13597 | return true; |
d1feda86 YQ |
13598 | } |
13599 | } | |
13600 | ||
57810aa7 | 13601 | return false; |
d1feda86 YQ |
13602 | } |
13603 | ||
57810aa7 | 13604 | bool |
f6ac5f3d | 13605 | remote_target::can_use_agent () |
d1feda86 | 13606 | { |
4082afcc | 13607 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13608 | } |
13609 | ||
9accd112 MM |
13610 | struct btrace_target_info |
13611 | { | |
13612 | /* The ptid of the traced thread. */ | |
13613 | ptid_t ptid; | |
f4abbc16 MM |
13614 | |
13615 | /* The obtained branch trace configuration. */ | |
13616 | struct btrace_config conf; | |
9accd112 MM |
13617 | }; |
13618 | ||
f4abbc16 MM |
13619 | /* Reset our idea of our target's btrace configuration. */ |
13620 | ||
13621 | static void | |
6b8edb51 | 13622 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13623 | { |
f4abbc16 MM |
13624 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13625 | } | |
13626 | ||
f4abbc16 MM |
13627 | /* Synchronize the configuration with the target. */ |
13628 | ||
6b8edb51 PA |
13629 | void |
13630 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13631 | { |
d33501a5 MM |
13632 | struct packet_config *packet; |
13633 | struct remote_state *rs; | |
13634 | char *buf, *pos, *endbuf; | |
13635 | ||
13636 | rs = get_remote_state (); | |
8d64371b | 13637 | buf = rs->buf.data (); |
d33501a5 MM |
13638 | endbuf = buf + get_remote_packet_size (); |
13639 | ||
13640 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13641 | if (packet_config_support (packet) == PACKET_ENABLE | |
13642 | && conf->bts.size != rs->btrace_config.bts.size) | |
13643 | { | |
13644 | pos = buf; | |
13645 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13646 | conf->bts.size); | |
13647 | ||
13648 | putpkt (buf); | |
8d64371b | 13649 | getpkt (&rs->buf, 0); |
d33501a5 MM |
13650 | |
13651 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13652 | { | |
13653 | if (buf[0] == 'E' && buf[1] == '.') | |
13654 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13655 | else | |
13656 | error (_("Failed to configure the BTS buffer size.")); | |
13657 | } | |
13658 | ||
13659 | rs->btrace_config.bts.size = conf->bts.size; | |
13660 | } | |
b20a6524 MM |
13661 | |
13662 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13663 | if (packet_config_support (packet) == PACKET_ENABLE | |
13664 | && conf->pt.size != rs->btrace_config.pt.size) | |
13665 | { | |
13666 | pos = buf; | |
13667 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13668 | conf->pt.size); | |
13669 | ||
13670 | putpkt (buf); | |
8d64371b | 13671 | getpkt (&rs->buf, 0); |
b20a6524 MM |
13672 | |
13673 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13674 | { | |
13675 | if (buf[0] == 'E' && buf[1] == '.') | |
13676 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13677 | else | |
13678 | error (_("Failed to configure the trace buffer size.")); | |
13679 | } | |
13680 | ||
13681 | rs->btrace_config.pt.size = conf->pt.size; | |
13682 | } | |
f4abbc16 MM |
13683 | } |
13684 | ||
13685 | /* Read the current thread's btrace configuration from the target and | |
13686 | store it into CONF. */ | |
13687 | ||
13688 | static void | |
13689 | btrace_read_config (struct btrace_config *conf) | |
13690 | { | |
9018be22 | 13691 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13692 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13693 | if (xml) |
13694 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13695 | } |
13696 | ||
c0272db5 TW |
13697 | /* Maybe reopen target btrace. */ |
13698 | ||
6b8edb51 PA |
13699 | void |
13700 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
13701 | { |
13702 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 13703 | int btrace_target_pushed = 0; |
15766370 | 13704 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 13705 | int warned = 0; |
15766370 | 13706 | #endif |
c0272db5 | 13707 | |
5ed8105e PA |
13708 | scoped_restore_current_thread restore_thread; |
13709 | ||
08036331 | 13710 | for (thread_info *tp : all_non_exited_threads ()) |
c0272db5 TW |
13711 | { |
13712 | set_general_thread (tp->ptid); | |
13713 | ||
13714 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13715 | btrace_read_config (&rs->btrace_config); | |
13716 | ||
13717 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13718 | continue; | |
13719 | ||
13720 | #if !defined (HAVE_LIBIPT) | |
13721 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13722 | { | |
13723 | if (!warned) | |
13724 | { | |
13725 | warned = 1; | |
c4e12631 MM |
13726 | warning (_("Target is recording using Intel Processor Trace " |
13727 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13728 | } |
13729 | ||
13730 | continue; | |
13731 | } | |
13732 | #endif /* !defined (HAVE_LIBIPT) */ | |
13733 | ||
13734 | /* Push target, once, but before anything else happens. This way our | |
13735 | changes to the threads will be cleaned up by unpushing the target | |
13736 | in case btrace_read_config () throws. */ | |
13737 | if (!btrace_target_pushed) | |
13738 | { | |
13739 | btrace_target_pushed = 1; | |
13740 | record_btrace_push_target (); | |
13741 | printf_filtered (_("Target is recording using %s.\n"), | |
13742 | btrace_format_string (rs->btrace_config.format)); | |
13743 | } | |
13744 | ||
13745 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13746 | tp->btrace.target->ptid = tp->ptid; | |
13747 | tp->btrace.target->conf = rs->btrace_config; | |
13748 | } | |
c0272db5 TW |
13749 | } |
13750 | ||
9accd112 MM |
13751 | /* Enable branch tracing. */ |
13752 | ||
f6ac5f3d PA |
13753 | struct btrace_target_info * |
13754 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13755 | { |
13756 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13757 | struct packet_config *packet = NULL; |
9accd112 | 13758 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
13759 | char *buf = rs->buf.data (); |
13760 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13761 | |
b20a6524 MM |
13762 | switch (conf->format) |
13763 | { | |
13764 | case BTRACE_FORMAT_BTS: | |
13765 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13766 | break; | |
13767 | ||
13768 | case BTRACE_FORMAT_PT: | |
13769 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13770 | break; | |
13771 | } | |
13772 | ||
13773 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13774 | error (_("Target does not support branch tracing.")); |
13775 | ||
f4abbc16 MM |
13776 | btrace_sync_conf (conf); |
13777 | ||
9accd112 MM |
13778 | set_general_thread (ptid); |
13779 | ||
13780 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13781 | putpkt (rs->buf); | |
8d64371b | 13782 | getpkt (&rs->buf, 0); |
9accd112 MM |
13783 | |
13784 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13785 | { | |
13786 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13787 | error (_("Could not enable branch tracing for %s: %s"), | |
8d64371b | 13788 | target_pid_to_str (ptid), &rs->buf[2]); |
9accd112 MM |
13789 | else |
13790 | error (_("Could not enable branch tracing for %s."), | |
13791 | target_pid_to_str (ptid)); | |
13792 | } | |
13793 | ||
8d749320 | 13794 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13795 | tinfo->ptid = ptid; |
13796 | ||
f4abbc16 MM |
13797 | /* If we fail to read the configuration, we lose some information, but the |
13798 | tracing itself is not impacted. */ | |
492d29ea PA |
13799 | TRY |
13800 | { | |
13801 | btrace_read_config (&tinfo->conf); | |
13802 | } | |
13803 | CATCH (err, RETURN_MASK_ERROR) | |
13804 | { | |
13805 | if (err.message != NULL) | |
13806 | warning ("%s", err.message); | |
13807 | } | |
13808 | END_CATCH | |
f4abbc16 | 13809 | |
9accd112 MM |
13810 | return tinfo; |
13811 | } | |
13812 | ||
13813 | /* Disable branch tracing. */ | |
13814 | ||
f6ac5f3d PA |
13815 | void |
13816 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13817 | { |
13818 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13819 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13820 | char *buf = rs->buf.data (); |
13821 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13822 | |
4082afcc | 13823 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13824 | error (_("Target does not support branch tracing.")); |
13825 | ||
13826 | set_general_thread (tinfo->ptid); | |
13827 | ||
13828 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13829 | putpkt (rs->buf); | |
8d64371b | 13830 | getpkt (&rs->buf, 0); |
9accd112 MM |
13831 | |
13832 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13833 | { | |
13834 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13835 | error (_("Could not disable branch tracing for %s: %s"), | |
8d64371b | 13836 | target_pid_to_str (tinfo->ptid), &rs->buf[2]); |
9accd112 MM |
13837 | else |
13838 | error (_("Could not disable branch tracing for %s."), | |
13839 | target_pid_to_str (tinfo->ptid)); | |
13840 | } | |
13841 | ||
13842 | xfree (tinfo); | |
13843 | } | |
13844 | ||
13845 | /* Teardown branch tracing. */ | |
13846 | ||
f6ac5f3d PA |
13847 | void |
13848 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13849 | { |
13850 | /* We must not talk to the target during teardown. */ | |
13851 | xfree (tinfo); | |
13852 | } | |
13853 | ||
13854 | /* Read the branch trace. */ | |
13855 | ||
f6ac5f3d PA |
13856 | enum btrace_error |
13857 | remote_target::read_btrace (struct btrace_data *btrace, | |
13858 | struct btrace_target_info *tinfo, | |
13859 | enum btrace_read_type type) | |
9accd112 MM |
13860 | { |
13861 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13862 | const char *annex; |
9accd112 | 13863 | |
4082afcc | 13864 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13865 | error (_("Target does not support branch tracing.")); |
13866 | ||
13867 | #if !defined(HAVE_LIBEXPAT) | |
13868 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13869 | #endif | |
13870 | ||
13871 | switch (type) | |
13872 | { | |
864089d2 | 13873 | case BTRACE_READ_ALL: |
9accd112 MM |
13874 | annex = "all"; |
13875 | break; | |
864089d2 | 13876 | case BTRACE_READ_NEW: |
9accd112 MM |
13877 | annex = "new"; |
13878 | break; | |
969c39fb MM |
13879 | case BTRACE_READ_DELTA: |
13880 | annex = "delta"; | |
13881 | break; | |
9accd112 MM |
13882 | default: |
13883 | internal_error (__FILE__, __LINE__, | |
13884 | _("Bad branch tracing read type: %u."), | |
13885 | (unsigned int) type); | |
13886 | } | |
13887 | ||
9018be22 | 13888 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13889 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13890 | if (!xml) |
969c39fb | 13891 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13892 | |
9018be22 | 13893 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13894 | |
969c39fb | 13895 | return BTRACE_ERR_NONE; |
9accd112 MM |
13896 | } |
13897 | ||
f6ac5f3d PA |
13898 | const struct btrace_config * |
13899 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
13900 | { |
13901 | return &tinfo->conf; | |
13902 | } | |
13903 | ||
57810aa7 | 13904 | bool |
f6ac5f3d | 13905 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 13906 | { |
4082afcc PA |
13907 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13908 | == PACKET_ENABLE); | |
ced63ec0 GB |
13909 | } |
13910 | ||
9dd130a0 TT |
13911 | /* Implementation of to_load. */ |
13912 | ||
f6ac5f3d PA |
13913 | void |
13914 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
13915 | { |
13916 | generic_load (name, from_tty); | |
13917 | } | |
13918 | ||
c78fa86a GB |
13919 | /* Accepts an integer PID; returns a string representing a file that |
13920 | can be opened on the remote side to get the symbols for the child | |
13921 | process. Returns NULL if the operation is not supported. */ | |
13922 | ||
f6ac5f3d PA |
13923 | char * |
13924 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 13925 | { |
9018be22 | 13926 | static gdb::optional<gdb::char_vector> filename; |
835205d0 GB |
13927 | struct inferior *inf; |
13928 | char *annex = NULL; | |
c78fa86a GB |
13929 | |
13930 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13931 | return NULL; | |
13932 | ||
835205d0 GB |
13933 | inf = find_inferior_pid (pid); |
13934 | if (inf == NULL) | |
13935 | internal_error (__FILE__, __LINE__, | |
13936 | _("not currently attached to process %d"), pid); | |
13937 | ||
13938 | if (!inf->fake_pid_p) | |
13939 | { | |
13940 | const int annex_size = 9; | |
13941 | ||
224c3ddb | 13942 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13943 | xsnprintf (annex, annex_size, "%x", pid); |
13944 | } | |
13945 | ||
8b88a78e | 13946 | filename = target_read_stralloc (current_top_target (), |
c78fa86a GB |
13947 | TARGET_OBJECT_EXEC_FILE, annex); |
13948 | ||
9018be22 | 13949 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
13950 | } |
13951 | ||
750ce8d1 YQ |
13952 | /* Implement the to_can_do_single_step target_ops method. */ |
13953 | ||
f6ac5f3d PA |
13954 | int |
13955 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
13956 | { |
13957 | /* We can only tell whether target supports single step or not by | |
13958 | supported s and S vCont actions if the stub supports vContSupported | |
13959 | feature. If the stub doesn't support vContSupported feature, | |
13960 | we have conservatively to think target doesn't supports single | |
13961 | step. */ | |
13962 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13963 | { | |
13964 | struct remote_state *rs = get_remote_state (); | |
13965 | ||
13966 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 13967 | remote_vcont_probe (); |
750ce8d1 YQ |
13968 | |
13969 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13970 | } | |
13971 | else | |
13972 | return 0; | |
13973 | } | |
13974 | ||
3a00c802 PA |
13975 | /* Implementation of the to_execution_direction method for the remote |
13976 | target. */ | |
13977 | ||
f6ac5f3d PA |
13978 | enum exec_direction_kind |
13979 | remote_target::execution_direction () | |
3a00c802 PA |
13980 | { |
13981 | struct remote_state *rs = get_remote_state (); | |
13982 | ||
13983 | return rs->last_resume_exec_dir; | |
13984 | } | |
13985 | ||
f6327dcb KB |
13986 | /* Return pointer to the thread_info struct which corresponds to |
13987 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13988 | ||
f6ac5f3d PA |
13989 | thread_info * |
13990 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
13991 | int handle_len, | |
13992 | inferior *inf) | |
f6327dcb | 13993 | { |
08036331 | 13994 | for (thread_info *tp : all_non_exited_threads ()) |
f6327dcb | 13995 | { |
7aabaf9d | 13996 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
13997 | |
13998 | if (tp->inf == inf && priv != NULL) | |
13999 | { | |
7aabaf9d | 14000 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14001 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
14002 | handle_len, priv->thread_handle.size ()); |
14003 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
14004 | handle_len) == 0) |
14005 | return tp; | |
14006 | } | |
14007 | } | |
14008 | ||
14009 | return NULL; | |
14010 | } | |
14011 | ||
57810aa7 | 14012 | bool |
f6ac5f3d | 14013 | remote_target::can_async_p () |
6426a772 | 14014 | { |
5d93a237 TT |
14015 | struct remote_state *rs = get_remote_state (); |
14016 | ||
3015c064 SM |
14017 | /* We don't go async if the user has explicitly prevented it with the |
14018 | "maint set target-async" command. */ | |
c6ebd6cf | 14019 | if (!target_async_permitted) |
57810aa7 | 14020 | return false; |
75c99385 | 14021 | |
23860348 | 14022 | /* We're async whenever the serial device is. */ |
5d93a237 | 14023 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14024 | } |
14025 | ||
57810aa7 | 14026 | bool |
f6ac5f3d | 14027 | remote_target::is_async_p () |
6426a772 | 14028 | { |
5d93a237 TT |
14029 | struct remote_state *rs = get_remote_state (); |
14030 | ||
c6ebd6cf | 14031 | if (!target_async_permitted) |
75c99385 | 14032 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14033 | return false; |
75c99385 | 14034 | |
23860348 | 14035 | /* We're async whenever the serial device is. */ |
5d93a237 | 14036 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14037 | } |
14038 | ||
2acceee2 JM |
14039 | /* Pass the SERIAL event on and up to the client. One day this code |
14040 | will be able to delay notifying the client of an event until the | |
23860348 | 14041 | point where an entire packet has been received. */ |
2acceee2 | 14042 | |
2acceee2 JM |
14043 | static serial_event_ftype remote_async_serial_handler; |
14044 | ||
6426a772 | 14045 | static void |
819cc324 | 14046 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14047 | { |
2acceee2 JM |
14048 | /* Don't propogate error information up to the client. Instead let |
14049 | the client find out about the error by querying the target. */ | |
6a3753b3 | 14050 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
14051 | } |
14052 | ||
74531fed PA |
14053 | static void |
14054 | remote_async_inferior_event_handler (gdb_client_data data) | |
14055 | { | |
6b8edb51 | 14056 | inferior_event_handler (INF_REG_EVENT, data); |
74531fed PA |
14057 | } |
14058 | ||
f6ac5f3d PA |
14059 | void |
14060 | remote_target::async (int enable) | |
2acceee2 | 14061 | { |
5d93a237 TT |
14062 | struct remote_state *rs = get_remote_state (); |
14063 | ||
6a3753b3 | 14064 | if (enable) |
2acceee2 | 14065 | { |
88b496c3 | 14066 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14067 | |
14068 | /* If there are pending events in the stop reply queue tell the | |
14069 | event loop to process them. */ | |
953edf2b | 14070 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14071 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14072 | /* For simplicity, below we clear the pending events token |
14073 | without remembering whether it is marked, so here we always | |
14074 | mark it. If there's actually no pending notification to | |
14075 | process, this ends up being a no-op (other than a spurious | |
14076 | event-loop wakeup). */ | |
14077 | if (target_is_non_stop_p ()) | |
14078 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14079 | } |
14080 | else | |
b7d2e916 PA |
14081 | { |
14082 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14083 | /* If the core is disabling async, it doesn't want to be |
14084 | disturbed with target events. Clear all async event sources | |
14085 | too. */ | |
6b8edb51 | 14086 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14087 | if (target_is_non_stop_p ()) |
14088 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14089 | } |
6426a772 JM |
14090 | } |
14091 | ||
65706a29 PA |
14092 | /* Implementation of the to_thread_events method. */ |
14093 | ||
f6ac5f3d PA |
14094 | void |
14095 | remote_target::thread_events (int enable) | |
65706a29 PA |
14096 | { |
14097 | struct remote_state *rs = get_remote_state (); | |
14098 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14099 | |
14100 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14101 | return; | |
14102 | ||
8d64371b | 14103 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14104 | putpkt (rs->buf); |
8d64371b | 14105 | getpkt (&rs->buf, 0); |
65706a29 PA |
14106 | |
14107 | switch (packet_ok (rs->buf, | |
14108 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14109 | { | |
14110 | case PACKET_OK: | |
8d64371b TT |
14111 | if (strcmp (rs->buf.data (), "OK") != 0) |
14112 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14113 | break; |
14114 | case PACKET_ERROR: | |
8d64371b | 14115 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14116 | break; |
14117 | case PACKET_UNKNOWN: | |
14118 | break; | |
14119 | } | |
14120 | } | |
14121 | ||
5a2468f5 | 14122 | static void |
981a3fb3 | 14123 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 14124 | { |
635c7e8a | 14125 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
14126 | } |
14127 | ||
d471ea57 | 14128 | static void |
981a3fb3 | 14129 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14130 | { |
37a105a1 | 14131 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14132 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14133 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14134 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14135 | |
2e783024 | 14136 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14137 | for (; list != NULL; list = list->next) |
14138 | if (strcmp (list->name, "Z-packet") == 0) | |
14139 | continue; | |
427c3a89 DJ |
14140 | else if (list->type == not_set_cmd) |
14141 | /* Alias commands are exactly like the original, except they | |
14142 | don't have the normal type. */ | |
14143 | continue; | |
14144 | else | |
37a105a1 | 14145 | { |
2e783024 | 14146 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14147 | |
112e8700 SM |
14148 | uiout->field_string ("name", list->name); |
14149 | uiout->text (": "); | |
427c3a89 | 14150 | if (list->type == show_cmd) |
f5c4fcd9 | 14151 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14152 | else |
14153 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14154 | } |
d471ea57 | 14155 | } |
5a2468f5 | 14156 | |
0f71a2f6 | 14157 | |
23860348 | 14158 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14159 | static void |
14160 | remote_new_objfile (struct objfile *objfile) | |
14161 | { | |
6b8edb51 | 14162 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14163 | |
6b8edb51 PA |
14164 | if (remote != NULL) /* Have a remote connection. */ |
14165 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14166 | } |
14167 | ||
00bf0b85 SS |
14168 | /* Pull all the tracepoints defined on the target and create local |
14169 | data structures representing them. We don't want to create real | |
14170 | tracepoints yet, we don't want to mess up the user's existing | |
14171 | collection. */ | |
14172 | ||
f6ac5f3d PA |
14173 | int |
14174 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14175 | { |
00bf0b85 SS |
14176 | struct remote_state *rs = get_remote_state (); |
14177 | char *p; | |
d5551862 | 14178 | |
00bf0b85 SS |
14179 | /* Ask for a first packet of tracepoint definition. */ |
14180 | putpkt ("qTfP"); | |
8d64371b TT |
14181 | getpkt (&rs->buf, 0); |
14182 | p = rs->buf.data (); | |
00bf0b85 | 14183 | while (*p && *p != 'l') |
d5551862 | 14184 | { |
00bf0b85 SS |
14185 | parse_tracepoint_definition (p, utpp); |
14186 | /* Ask for another packet of tracepoint definition. */ | |
14187 | putpkt ("qTsP"); | |
8d64371b TT |
14188 | getpkt (&rs->buf, 0); |
14189 | p = rs->buf.data (); | |
d5551862 | 14190 | } |
00bf0b85 | 14191 | return 0; |
d5551862 SS |
14192 | } |
14193 | ||
f6ac5f3d PA |
14194 | int |
14195 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14196 | { |
00bf0b85 | 14197 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14198 | char *p; |
d5551862 | 14199 | |
00bf0b85 SS |
14200 | /* Ask for a first packet of variable definition. */ |
14201 | putpkt ("qTfV"); | |
8d64371b TT |
14202 | getpkt (&rs->buf, 0); |
14203 | p = rs->buf.data (); | |
00bf0b85 | 14204 | while (*p && *p != 'l') |
d5551862 | 14205 | { |
00bf0b85 SS |
14206 | parse_tsv_definition (p, utsvp); |
14207 | /* Ask for another packet of variable definition. */ | |
14208 | putpkt ("qTsV"); | |
8d64371b TT |
14209 | getpkt (&rs->buf, 0); |
14210 | p = rs->buf.data (); | |
d5551862 | 14211 | } |
00bf0b85 | 14212 | return 0; |
d5551862 SS |
14213 | } |
14214 | ||
c1e36e3e PA |
14215 | /* The "set/show range-stepping" show hook. */ |
14216 | ||
14217 | static void | |
14218 | show_range_stepping (struct ui_file *file, int from_tty, | |
14219 | struct cmd_list_element *c, | |
14220 | const char *value) | |
14221 | { | |
14222 | fprintf_filtered (file, | |
14223 | _("Debugger's willingness to use range stepping " | |
14224 | "is %s.\n"), value); | |
14225 | } | |
14226 | ||
6b8edb51 PA |
14227 | /* Return true if the vCont;r action is supported by the remote |
14228 | stub. */ | |
14229 | ||
14230 | bool | |
14231 | remote_target::vcont_r_supported () | |
14232 | { | |
14233 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14234 | remote_vcont_probe (); | |
14235 | ||
14236 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14237 | && get_remote_state ()->supports_vCont.r); | |
14238 | } | |
14239 | ||
c1e36e3e PA |
14240 | /* The "set/show range-stepping" set hook. */ |
14241 | ||
14242 | static void | |
eb4c3f4a | 14243 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14244 | struct cmd_list_element *c) |
14245 | { | |
6b8edb51 PA |
14246 | /* When enabling, check whether range stepping is actually supported |
14247 | by the target, and warn if not. */ | |
c1e36e3e PA |
14248 | if (use_range_stepping) |
14249 | { | |
6b8edb51 PA |
14250 | remote_target *remote = get_current_remote_target (); |
14251 | if (remote == NULL | |
14252 | || !remote->vcont_r_supported ()) | |
14253 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14254 | } |
14255 | } | |
14256 | ||
c906108c | 14257 | void |
fba45db2 | 14258 | _initialize_remote (void) |
c906108c | 14259 | { |
9a7071a8 | 14260 | struct cmd_list_element *cmd; |
6f937416 | 14261 | const char *cmd_name; |
ea9c271d | 14262 | |
0f71a2f6 | 14263 | /* architecture specific data */ |
29709017 DJ |
14264 | remote_g_packet_data_handle = |
14265 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14266 | |
94585166 DB |
14267 | remote_pspace_data |
14268 | = register_program_space_data_with_cleanup (NULL, | |
14269 | remote_pspace_data_cleanup); | |
14270 | ||
d9f719f1 PA |
14271 | add_target (remote_target_info, remote_target::open); |
14272 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14273 | |
dc8acb97 | 14274 | /* Hook into new objfile notification. */ |
76727919 | 14275 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14276 | |
c906108c SS |
14277 | #if 0 |
14278 | init_remote_threadtests (); | |
14279 | #endif | |
14280 | ||
23860348 | 14281 | /* set/show remote ... */ |
d471ea57 | 14282 | |
1bedd215 | 14283 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
14284 | Remote protocol specific variables\n\ |
14285 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14286 | the packets being used"), |
cff3e48b | 14287 | &remote_set_cmdlist, "set remote ", |
23860348 | 14288 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14289 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
14290 | Remote protocol specific variables\n\ |
14291 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14292 | the packets being used"), |
cff3e48b | 14293 | &remote_show_cmdlist, "show remote ", |
23860348 | 14294 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14295 | |
1a966eab AC |
14296 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14297 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14298 | Argument is a single section name (default: all loaded sections).\n\ |
14299 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14300 | &cmdlist); |
14301 | ||
1a966eab AC |
14302 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14303 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14304 | maintenance packet TEXT\n\ |
14305 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14306 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14307 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14308 | terminating `#' character and checksum."), |
c906108c SS |
14309 | &maintenancelist); |
14310 | ||
7915a72c AC |
14311 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14312 | Set whether to send break if interrupted."), _("\ | |
14313 | Show whether to send break if interrupted."), _("\ | |
14314 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14315 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14316 | &setlist, &showlist); |
9a7071a8 JB |
14317 | cmd_name = "remotebreak"; |
14318 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14319 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14320 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14321 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14322 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14323 | ||
14324 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14325 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14326 | _("\ | |
9a7071a8 JB |
14327 | Set interrupt sequence to remote target."), _("\ |
14328 | Show interrupt sequence to remote target."), _("\ | |
14329 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14330 | NULL, show_interrupt_sequence, | |
14331 | &remote_set_cmdlist, | |
14332 | &remote_show_cmdlist); | |
14333 | ||
14334 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14335 | &interrupt_on_connect, _("\ | |
14336 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14337 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14338 | If set, interrupt sequence is sent to remote target."), | |
14339 | NULL, NULL, | |
14340 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14341 | |
23860348 | 14342 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14343 | |
1a966eab AC |
14344 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14345 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14346 | &setlist); |
1a966eab AC |
14347 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14348 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14349 | &showlist); |
14350 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14351 | set_memory_write_packet_size, _("\ |
14352 | Set the maximum number of bytes per memory-write packet.\n\ | |
14353 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14354 | default packet size. The actual limit is further reduced\n\ | |
14355 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14356 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14357 | &remote_set_cmdlist); |
14358 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14359 | set_memory_read_packet_size, _("\ |
14360 | Set the maximum number of bytes per memory-read packet.\n\ | |
14361 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14362 | default packet size. The actual limit is further reduced\n\ | |
14363 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14364 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14365 | &remote_set_cmdlist); |
14366 | add_cmd ("memory-write-packet-size", no_class, | |
14367 | show_memory_write_packet_size, | |
1a966eab | 14368 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14369 | &remote_show_cmdlist); |
14370 | add_cmd ("memory-read-packet-size", no_class, | |
14371 | show_memory_read_packet_size, | |
1a966eab | 14372 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14373 | &remote_show_cmdlist); |
c906108c | 14374 | |
055303e2 | 14375 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14376 | &remote_hw_watchpoint_limit, _("\ |
14377 | Set the maximum number of target hardware watchpoints."), _("\ | |
14378 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14379 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14380 | NULL, show_hardware_watchpoint_limit, | |
14381 | &remote_set_cmdlist, | |
14382 | &remote_show_cmdlist); | |
14383 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14384 | no_class, | |
480a3f21 PW |
14385 | &remote_hw_watchpoint_length_limit, _("\ |
14386 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14387 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14388 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14389 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14390 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14391 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14392 | &remote_hw_breakpoint_limit, _("\ |
14393 | Set the maximum number of target hardware breakpoints."), _("\ | |
14394 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14395 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14396 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14397 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14398 | |
1b493192 PA |
14399 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14400 | &remote_address_size, _("\ | |
4d28ad1e AC |
14401 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14402 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14403 | NULL, |
14404 | NULL, /* FIXME: i18n: */ | |
14405 | &setlist, &showlist); | |
c906108c | 14406 | |
ca4f7f8b PA |
14407 | init_all_packet_configs (); |
14408 | ||
444abaca | 14409 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14410 | "X", "binary-download", 1); |
0f71a2f6 | 14411 | |
444abaca | 14412 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14413 | "vCont", "verbose-resume", 0); |
506fb367 | 14414 | |
89be2091 DJ |
14415 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14416 | "QPassSignals", "pass-signals", 0); | |
14417 | ||
82075af2 JS |
14418 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14419 | "QCatchSyscalls", "catch-syscalls", 0); | |
14420 | ||
9b224c5e PA |
14421 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14422 | "QProgramSignals", "program-signals", 0); | |
14423 | ||
bc3b087d SDJ |
14424 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14425 | "QSetWorkingDir", "set-working-dir", 0); | |
14426 | ||
aefd8b33 SDJ |
14427 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14428 | "QStartupWithShell", "startup-with-shell", 0); | |
14429 | ||
0a2dde4a SDJ |
14430 | add_packet_config_cmd (&remote_protocol_packets |
14431 | [PACKET_QEnvironmentHexEncoded], | |
14432 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14433 | 0); | |
14434 | ||
14435 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14436 | "QEnvironmentReset", "environment-reset", | |
14437 | 0); | |
14438 | ||
14439 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14440 | "QEnvironmentUnset", "environment-unset", | |
14441 | 0); | |
14442 | ||
444abaca | 14443 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14444 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14445 | |
444abaca | 14446 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14447 | "P", "set-register", 1); |
d471ea57 | 14448 | |
444abaca | 14449 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14450 | "p", "fetch-register", 1); |
b96ec7ac | 14451 | |
444abaca | 14452 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14453 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14454 | |
444abaca | 14455 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14456 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14457 | |
444abaca | 14458 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14459 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14460 | |
444abaca | 14461 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14462 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14463 | |
444abaca | 14464 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14465 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14466 | |
0876f84a DJ |
14467 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14468 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14469 | |
c78fa86a GB |
14470 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14471 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14472 | ||
23181151 DJ |
14473 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14474 | "qXfer:features:read", "target-features", 0); | |
14475 | ||
cfa9d6d9 DJ |
14476 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14477 | "qXfer:libraries:read", "library-info", 0); | |
14478 | ||
2268b414 JK |
14479 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14480 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14481 | ||
fd79ecee DJ |
14482 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14483 | "qXfer:memory-map:read", "memory-map", 0); | |
14484 | ||
0e7f50da UW |
14485 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14486 | "qXfer:spu:read", "read-spu-object", 0); | |
14487 | ||
14488 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14489 | "qXfer:spu:write", "write-spu-object", 0); | |
14490 | ||
07e059b5 VP |
14491 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14492 | "qXfer:osdata:read", "osdata", 0); | |
14493 | ||
dc146f7c VP |
14494 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14495 | "qXfer:threads:read", "threads", 0); | |
14496 | ||
4aa995e1 PA |
14497 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14498 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14499 | ||
14500 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14501 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14502 | ||
b3b9301e PA |
14503 | add_packet_config_cmd |
14504 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14505 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14506 | |
169081d0 TG |
14507 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14508 | "qXfer:uib:read", "unwind-info-block", 0); | |
14509 | ||
444abaca | 14510 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14511 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14512 | 0); |
14513 | ||
711e434b PM |
14514 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14515 | "qGetTIBAddr", "get-thread-information-block-address", | |
14516 | 0); | |
14517 | ||
40ab02ce MS |
14518 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14519 | "bc", "reverse-continue", 0); | |
14520 | ||
14521 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14522 | "bs", "reverse-step", 0); | |
14523 | ||
be2a5f71 DJ |
14524 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14525 | "qSupported", "supported-packets", 0); | |
14526 | ||
08388c79 DE |
14527 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14528 | "qSearch:memory", "search-memory", 0); | |
14529 | ||
bd3eecc3 PA |
14530 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14531 | "qTStatus", "trace-status", 0); | |
14532 | ||
15a201c8 GB |
14533 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14534 | "vFile:setfs", "hostio-setfs", 0); | |
14535 | ||
a6b151f1 DJ |
14536 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14537 | "vFile:open", "hostio-open", 0); | |
14538 | ||
14539 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14540 | "vFile:pread", "hostio-pread", 0); | |
14541 | ||
14542 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14543 | "vFile:pwrite", "hostio-pwrite", 0); | |
14544 | ||
14545 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14546 | "vFile:close", "hostio-close", 0); | |
14547 | ||
14548 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14549 | "vFile:unlink", "hostio-unlink", 0); | |
14550 | ||
b9e7b9c3 UW |
14551 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14552 | "vFile:readlink", "hostio-readlink", 0); | |
14553 | ||
0a93529c GB |
14554 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14555 | "vFile:fstat", "hostio-fstat", 0); | |
14556 | ||
2d717e4f DJ |
14557 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14558 | "vAttach", "attach", 0); | |
14559 | ||
14560 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14561 | "vRun", "run", 0); | |
14562 | ||
a6f3e723 SL |
14563 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14564 | "QStartNoAckMode", "noack", 0); | |
14565 | ||
82f73884 PA |
14566 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14567 | "vKill", "kill", 0); | |
14568 | ||
0b16c5cf PA |
14569 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14570 | "qAttached", "query-attached", 0); | |
14571 | ||
782b2b07 | 14572 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14573 | "ConditionalTracepoints", |
14574 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14575 | |
14576 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14577 | "ConditionalBreakpoints", | |
14578 | "conditional-breakpoints", 0); | |
14579 | ||
d3ce09f5 SS |
14580 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14581 | "BreakpointCommands", | |
14582 | "breakpoint-commands", 0); | |
14583 | ||
7a697b8d SS |
14584 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14585 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14586 | |
409873ef SS |
14587 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14588 | "TracepointSource", "TracepointSource", 0); | |
14589 | ||
d914c394 SS |
14590 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14591 | "QAllow", "allow", 0); | |
14592 | ||
0fb4aa4b PA |
14593 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14594 | "StaticTracepoints", "static-tracepoints", 0); | |
14595 | ||
1e4d1764 YQ |
14596 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14597 | "InstallInTrace", "install-in-trace", 0); | |
14598 | ||
0fb4aa4b PA |
14599 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14600 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14601 | ||
78d85199 YQ |
14602 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14603 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14604 | ||
03583c20 UW |
14605 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14606 | "QDisableRandomization", "disable-randomization", 0); | |
14607 | ||
d1feda86 YQ |
14608 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14609 | "QAgent", "agent", 0); | |
14610 | ||
f6f899bf HAQ |
14611 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14612 | "QTBuffer:size", "trace-buffer-size", 0); | |
14613 | ||
9accd112 MM |
14614 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14615 | "Qbtrace:off", "disable-btrace", 0); | |
14616 | ||
14617 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14618 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14619 | ||
14620 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14621 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14622 | |
14623 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14624 | "qXfer:btrace", "read-btrace", 0); | |
14625 | ||
f4abbc16 MM |
14626 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14627 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14628 | ||
d33501a5 MM |
14629 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14630 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14631 | ||
73b8c1fd PA |
14632 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14633 | "multiprocess-feature", "multiprocess-feature", 0); | |
14634 | ||
f7e6eed5 PA |
14635 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14636 | "swbreak-feature", "swbreak-feature", 0); | |
14637 | ||
14638 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14639 | "hwbreak-feature", "hwbreak-feature", 0); | |
14640 | ||
89245bc0 DB |
14641 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14642 | "fork-event-feature", "fork-event-feature", 0); | |
14643 | ||
14644 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14645 | "vfork-event-feature", "vfork-event-feature", 0); | |
14646 | ||
b20a6524 MM |
14647 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14648 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14649 | ||
750ce8d1 YQ |
14650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14651 | "vContSupported", "verbose-resume-supported", 0); | |
14652 | ||
94585166 DB |
14653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14654 | "exec-event-feature", "exec-event-feature", 0); | |
14655 | ||
de979965 PA |
14656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14657 | "vCtrlC", "ctrl-c", 0); | |
14658 | ||
65706a29 PA |
14659 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14660 | "QThreadEvents", "thread-events", 0); | |
14661 | ||
f2faf941 PA |
14662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14663 | "N stop reply", "no-resumed-stop-reply", 0); | |
14664 | ||
0b736949 DB |
14665 | /* Assert that we've registered "set remote foo-packet" commands |
14666 | for all packet configs. */ | |
ca4f7f8b PA |
14667 | { |
14668 | int i; | |
14669 | ||
14670 | for (i = 0; i < PACKET_MAX; i++) | |
14671 | { | |
14672 | /* Ideally all configs would have a command associated. Some | |
14673 | still don't though. */ | |
14674 | int excepted; | |
14675 | ||
14676 | switch (i) | |
14677 | { | |
14678 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14679 | case PACKET_EnableDisableTracepoints_feature: |
14680 | case PACKET_tracenz_feature: | |
14681 | case PACKET_DisconnectedTracing_feature: | |
14682 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14683 | case PACKET_qCRC: |
14684 | /* Additions to this list need to be well justified: | |
14685 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14686 | excepted = 1; |
14687 | break; | |
14688 | default: | |
14689 | excepted = 0; | |
14690 | break; | |
14691 | } | |
14692 | ||
14693 | /* This catches both forgetting to add a config command, and | |
14694 | forgetting to remove a packet from the exception list. */ | |
14695 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14696 | } | |
14697 | } | |
14698 | ||
37a105a1 DJ |
14699 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14700 | Z sub-packet has its own set and show commands, but users may | |
14701 | have sets to this variable in their .gdbinit files (or in their | |
14702 | documentation). */ | |
e9e68a56 | 14703 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14704 | &remote_Z_packet_detect, _("\ |
14705 | Set use of remote protocol `Z' packets"), _("\ | |
14706 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14707 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14708 | packets."), |
e9e68a56 | 14709 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14710 | show_remote_protocol_Z_packet_cmd, |
14711 | /* FIXME: i18n: Use of remote protocol | |
14712 | `Z' packets is %s. */ | |
e9e68a56 | 14713 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14714 | |
a6b151f1 DJ |
14715 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14716 | Manipulate files on the remote system\n\ | |
14717 | Transfer files to and from the remote target system."), | |
14718 | &remote_cmdlist, "remote ", | |
14719 | 0 /* allow-unknown */, &cmdlist); | |
14720 | ||
14721 | add_cmd ("put", class_files, remote_put_command, | |
14722 | _("Copy a local file to the remote system."), | |
14723 | &remote_cmdlist); | |
14724 | ||
14725 | add_cmd ("get", class_files, remote_get_command, | |
14726 | _("Copy a remote file to the local system."), | |
14727 | &remote_cmdlist); | |
14728 | ||
14729 | add_cmd ("delete", class_files, remote_delete_command, | |
14730 | _("Delete a remote file."), | |
14731 | &remote_cmdlist); | |
14732 | ||
2d717e4f | 14733 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14734 | &remote_exec_file_var, _("\ |
2d717e4f | 14735 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14736 | Show the remote pathname for \"run\""), NULL, |
14737 | set_remote_exec_file, | |
14738 | show_remote_exec_file, | |
14739 | &remote_set_cmdlist, | |
14740 | &remote_show_cmdlist); | |
2d717e4f | 14741 | |
c1e36e3e PA |
14742 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14743 | &use_range_stepping, _("\ | |
14744 | Enable or disable range stepping."), _("\ | |
14745 | Show whether target-assisted range stepping is enabled."), _("\ | |
14746 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14747 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14748 | of issuing multiple single-steps. This speeds up source level\n\ | |
14749 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14750 | stepping is supported by the target. The default is on."), | |
14751 | set_range_stepping, | |
14752 | show_range_stepping, | |
14753 | &setlist, | |
14754 | &showlist); | |
14755 | ||
449092f6 CV |
14756 | /* Eventually initialize fileio. See fileio.c */ |
14757 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14758 | |
ba348170 | 14759 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14760 | special ptids with it set to != 0. */ |
fd79271b TT |
14761 | magic_null_ptid = ptid_t (42000, -1, 1); |
14762 | not_sent_ptid = ptid_t (42000, -2, 1); | |
14763 | any_thread_ptid = ptid_t (42000, 0, 1); | |
c906108c | 14764 | } |