Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1988-2018 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" | |
c5aa993b | 30 | /*#include "terminal.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" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
438e1e42 | 50 | #include "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" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
2ec845e7 | 75 | #include "common/scoped_restore.h" |
0a2dde4a | 76 | #include "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; | |
953edf2b | 99 | static void stop_reply_xfree (struct stop_reply *); |
6b8edb51 | 100 | |
953edf2b TT |
101 | struct stop_reply_deleter |
102 | { | |
103 | void operator() (stop_reply *r) const | |
104 | { | |
105 | stop_reply_xfree (r); | |
106 | } | |
107 | }; | |
108 | ||
109 | typedef std::unique_ptr<stop_reply, stop_reply_deleter> stop_reply_up; | |
6b8edb51 PA |
110 | |
111 | /* Generic configuration support for packets the stub optionally | |
112 | supports. Allows the user to specify the use of the packet as well | |
113 | as allowing GDB to auto-detect support in the remote stub. */ | |
114 | ||
115 | enum packet_support | |
116 | { | |
117 | PACKET_SUPPORT_UNKNOWN = 0, | |
118 | PACKET_ENABLE, | |
119 | PACKET_DISABLE | |
120 | }; | |
121 | ||
122 | /* Analyze a packet's return value and update the packet config | |
123 | accordingly. */ | |
124 | ||
125 | enum packet_result | |
126 | { | |
127 | PACKET_ERROR, | |
128 | PACKET_OK, | |
129 | PACKET_UNKNOWN | |
130 | }; | |
131 | ||
132 | struct threads_listing_context; | |
3c69da40 PA |
133 | |
134 | /* Stub vCont actions support. | |
135 | ||
136 | Each field is a boolean flag indicating whether the stub reports | |
137 | support for the corresponding action. */ | |
138 | ||
139 | struct vCont_action_support | |
140 | { | |
141 | /* vCont;t */ | |
142 | bool t = false; | |
143 | ||
144 | /* vCont;r */ | |
145 | bool r = false; | |
146 | ||
147 | /* vCont;s */ | |
148 | bool s = false; | |
149 | ||
150 | /* vCont;S */ | |
151 | bool S = false; | |
152 | }; | |
153 | ||
154 | /* About this many threadisds fit in a packet. */ | |
155 | ||
156 | #define MAXTHREADLISTRESULTS 32 | |
157 | ||
158 | /* Data for the vFile:pread readahead cache. */ | |
159 | ||
160 | struct readahead_cache | |
161 | { | |
162 | /* Invalidate the readahead cache. */ | |
163 | void invalidate (); | |
164 | ||
165 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
166 | void invalidate_fd (int fd); | |
167 | ||
168 | /* Serve pread from the readahead cache. Returns number of bytes | |
169 | read, or 0 if the request can't be served from the cache. */ | |
170 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
171 | ||
172 | /* The file descriptor for the file that is being cached. -1 if the | |
173 | cache is invalid. */ | |
174 | int fd = -1; | |
175 | ||
176 | /* The offset into the file that the cache buffer corresponds | |
177 | to. */ | |
178 | ULONGEST offset = 0; | |
179 | ||
180 | /* The buffer holding the cache contents. */ | |
181 | gdb_byte *buf = nullptr; | |
182 | /* The buffer's size. We try to read as much as fits into a packet | |
183 | at a time. */ | |
184 | size_t bufsize = 0; | |
185 | ||
186 | /* Cache hit and miss counters. */ | |
187 | ULONGEST hit_count = 0; | |
188 | ULONGEST miss_count = 0; | |
189 | }; | |
190 | ||
191 | /* Description of the remote protocol for a given architecture. */ | |
192 | ||
193 | struct packet_reg | |
194 | { | |
195 | long offset; /* Offset into G packet. */ | |
196 | long regnum; /* GDB's internal register number. */ | |
197 | LONGEST pnum; /* Remote protocol register number. */ | |
198 | int in_g_packet; /* Always part of G packet. */ | |
199 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
200 | at present. */ | |
201 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
202 | at present. */ | |
203 | }; | |
204 | ||
205 | struct remote_arch_state | |
206 | { | |
207 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
208 | ||
209 | /* Description of the remote protocol registers. */ | |
210 | long sizeof_g_packet; | |
211 | ||
212 | /* Description of the remote protocol registers indexed by REGNUM | |
213 | (making an array gdbarch_num_regs in size). */ | |
214 | std::unique_ptr<packet_reg[]> regs; | |
215 | ||
216 | /* This is the size (in chars) of the first response to the ``g'' | |
217 | packet. It is used as a heuristic when determining the maximum | |
218 | size of memory-read and memory-write packets. A target will | |
219 | typically only reserve a buffer large enough to hold the ``g'' | |
220 | packet. The size does not include packet overhead (headers and | |
221 | trailers). */ | |
222 | long actual_register_packet_size; | |
223 | ||
224 | /* This is the maximum size (in chars) of a non read/write packet. | |
225 | It is also used as a cap on the size of read/write packets. */ | |
226 | long remote_packet_size; | |
227 | }; | |
228 | ||
229 | /* Description of the remote protocol state for the currently | |
230 | connected target. This is per-target state, and independent of the | |
231 | selected architecture. */ | |
232 | ||
233 | class remote_state | |
234 | { | |
235 | public: | |
236 | ||
237 | remote_state (); | |
238 | ~remote_state (); | |
239 | ||
240 | /* Get the remote arch state for GDBARCH. */ | |
241 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
242 | ||
243 | public: /* data */ | |
244 | ||
245 | /* A buffer to use for incoming packets, and its current size. The | |
246 | buffer is grown dynamically for larger incoming packets. | |
247 | Outgoing packets may also be constructed in this buffer. | |
248 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
249 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
250 | packets. */ | |
251 | char *buf; | |
252 | long buf_size; | |
253 | ||
254 | /* True if we're going through initial connection setup (finding out | |
255 | about the remote side's threads, relocating symbols, etc.). */ | |
256 | bool starting_up = false; | |
257 | ||
258 | /* If we negotiated packet size explicitly (and thus can bypass | |
259 | heuristics for the largest packet size that will not overflow | |
260 | a buffer in the stub), this will be set to that packet size. | |
261 | Otherwise zero, meaning to use the guessed size. */ | |
262 | long explicit_packet_size = 0; | |
263 | ||
264 | /* remote_wait is normally called when the target is running and | |
265 | waits for a stop reply packet. But sometimes we need to call it | |
266 | when the target is already stopped. We can send a "?" packet | |
267 | and have remote_wait read the response. Or, if we already have | |
268 | the response, we can stash it in BUF and tell remote_wait to | |
269 | skip calling getpkt. This flag is set when BUF contains a | |
270 | stop reply packet and the target is not waiting. */ | |
271 | int cached_wait_status = 0; | |
272 | ||
273 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
274 | expect acks from each other. The connection is assumed to be | |
275 | reliable. */ | |
276 | bool noack_mode = false; | |
277 | ||
278 | /* True if we're connected in extended remote mode. */ | |
279 | bool extended = false; | |
280 | ||
281 | /* True if we resumed the target and we're waiting for the target to | |
282 | stop. In the mean time, we can't start another command/query. | |
283 | The remote server wouldn't be ready to process it, so we'd | |
284 | timeout waiting for a reply that would never come and eventually | |
285 | we'd close the connection. This can happen in asynchronous mode | |
286 | because we allow GDB commands while the target is running. */ | |
287 | bool waiting_for_stop_reply = false; | |
288 | ||
289 | /* The status of the stub support for the various vCont actions. */ | |
290 | vCont_action_support supports_vCont; | |
291 | ||
292 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
293 | responded to that. */ | |
294 | bool ctrlc_pending_p = false; | |
295 | ||
296 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
297 | remote descriptor. At that point it is not safe to send a remote | |
298 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
299 | process it once we're done with sending/receiving the current | |
300 | packet, which should be shortly. If however that takes too long, | |
301 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
302 | bool got_ctrlc_during_io = false; | |
303 | ||
304 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
305 | remote_open knows that we don't have a file open when the program | |
306 | starts. */ | |
307 | struct serial *remote_desc = nullptr; | |
308 | ||
309 | /* These are the threads which we last sent to the remote system. The | |
310 | TID member will be -1 for all or -2 for not sent yet. */ | |
311 | ptid_t general_thread = null_ptid; | |
312 | ptid_t continue_thread = null_ptid; | |
313 | ||
314 | /* This is the traceframe which we last selected on the remote system. | |
315 | It will be -1 if no traceframe is selected. */ | |
316 | int remote_traceframe_number = -1; | |
317 | ||
318 | char *last_pass_packet = nullptr; | |
319 | ||
320 | /* The last QProgramSignals packet sent to the target. We bypass | |
321 | sending a new program signals list down to the target if the new | |
322 | packet is exactly the same as the last we sent. IOW, we only let | |
323 | the target know about program signals list changes. */ | |
324 | char *last_program_signals_packet = nullptr; | |
325 | ||
326 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
327 | ||
328 | bool last_sent_step = false; | |
329 | ||
330 | /* The execution direction of the last resume we got. */ | |
331 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
332 | ||
333 | char *finished_object = nullptr; | |
334 | char *finished_annex = nullptr; | |
335 | ULONGEST finished_offset = 0; | |
336 | ||
337 | /* Should we try the 'ThreadInfo' query packet? | |
338 | ||
339 | This variable (NOT available to the user: auto-detect only!) | |
340 | determines whether GDB will use the new, simpler "ThreadInfo" | |
341 | query or the older, more complex syntax for thread queries. | |
342 | This is an auto-detect variable (set to true at each connect, | |
343 | and set to false when the target fails to recognize it). */ | |
344 | bool use_threadinfo_query = false; | |
345 | bool use_threadextra_query = false; | |
346 | ||
347 | threadref echo_nextthread {}; | |
348 | threadref nextthread {}; | |
349 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
350 | ||
351 | /* The state of remote notification. */ | |
352 | struct remote_notif_state *notif_state = nullptr; | |
353 | ||
354 | /* The branch trace configuration. */ | |
355 | struct btrace_config btrace_config {}; | |
356 | ||
357 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
358 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
359 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
360 | has yet been sent. */ | |
361 | int fs_pid = -1; | |
362 | ||
363 | /* A readahead cache for vFile:pread. Often, reading a binary | |
364 | involves a sequence of small reads. E.g., when parsing an ELF | |
365 | file. A readahead cache helps mostly the case of remote | |
366 | debugging on a connection with higher latency, due to the | |
367 | request/reply nature of the RSP. We only cache data for a single | |
368 | file descriptor at a time. */ | |
369 | struct readahead_cache readahead_cache; | |
370 | ||
371 | /* The list of already fetched and acknowledged stop events. This | |
372 | queue is used for notification Stop, and other notifications | |
373 | don't need queue for their events, because the notification | |
374 | events of Stop can't be consumed immediately, so that events | |
375 | should be queued first, and be consumed by remote_wait_{ns,as} | |
376 | one per time. Other notifications can consume their events | |
377 | immediately, so queue is not needed for them. */ | |
953edf2b | 378 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
379 | |
380 | /* Asynchronous signal handle registered as event loop source for | |
381 | when we have pending events ready to be passed to the core. */ | |
382 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
383 | ||
384 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
385 | ``forever'' still use the normal timeout mechanism. This is | |
386 | currently used by the ASYNC code to guarentee that target reads | |
387 | during the initial connect always time-out. Once getpkt has been | |
388 | modified to return a timeout indication and, in turn | |
389 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
390 | this can go away. */ | |
391 | int wait_forever_enabled_p = 1; | |
392 | ||
393 | private: | |
394 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
395 | is only one entry here, though we may see more with stubs that | |
396 | support multi-process. */ | |
397 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
398 | m_arch_states; | |
399 | }; | |
6b8edb51 | 400 | |
d9f719f1 PA |
401 | static const target_info remote_target_info = { |
402 | "remote", | |
403 | N_("Remote serial target in gdb-specific protocol"), | |
404 | remote_doc | |
405 | }; | |
406 | ||
f6ac5f3d PA |
407 | class remote_target : public target_ops |
408 | { | |
409 | public: | |
410 | remote_target () | |
411 | { | |
412 | to_stratum = process_stratum; | |
413 | } | |
6b8edb51 | 414 | ~remote_target () override; |
f6ac5f3d | 415 | |
d9f719f1 PA |
416 | const target_info &info () const override |
417 | { return remote_target_info; } | |
f6ac5f3d PA |
418 | |
419 | thread_control_capabilities get_thread_control_capabilities () override | |
420 | { return tc_schedlock; } | |
421 | ||
d9f719f1 PA |
422 | /* Open a remote connection. */ |
423 | static void open (const char *, int); | |
424 | ||
f6ac5f3d PA |
425 | void close () override; |
426 | ||
427 | void detach (inferior *, int) override; | |
428 | void disconnect (const char *, int) override; | |
429 | ||
430 | void commit_resume () override; | |
431 | void resume (ptid_t, int, enum gdb_signal) override; | |
432 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
433 | ||
434 | void fetch_registers (struct regcache *, int) override; | |
435 | void store_registers (struct regcache *, int) override; | |
436 | void prepare_to_store (struct regcache *) override; | |
437 | ||
438 | void files_info () override; | |
439 | ||
440 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
441 | ||
442 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
443 | enum remove_bp_reason) override; | |
444 | ||
445 | ||
57810aa7 PA |
446 | bool stopped_by_sw_breakpoint () override; |
447 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 448 | |
57810aa7 | 449 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 450 | |
57810aa7 | 451 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 452 | |
57810aa7 | 453 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 454 | |
57810aa7 | 455 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 456 | |
57810aa7 | 457 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
458 | |
459 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
460 | ||
461 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
462 | ||
463 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
464 | ||
465 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
466 | ||
467 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
468 | struct expression *) override; | |
469 | ||
470 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
471 | struct expression *) override; | |
472 | ||
473 | void kill () override; | |
474 | ||
475 | void load (const char *, int) override; | |
476 | ||
477 | void mourn_inferior () override; | |
478 | ||
479 | void pass_signals (int, unsigned char *) override; | |
480 | ||
481 | int set_syscall_catchpoint (int, bool, int, | |
482 | gdb::array_view<const int>) override; | |
483 | ||
484 | void program_signals (int, unsigned char *) override; | |
485 | ||
57810aa7 | 486 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
487 | |
488 | const char *thread_name (struct thread_info *) override; | |
489 | ||
490 | void update_thread_list () override; | |
491 | ||
492 | const char *pid_to_str (ptid_t) override; | |
493 | ||
494 | const char *extra_thread_info (struct thread_info *) override; | |
495 | ||
496 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
497 | ||
498 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
499 | int handle_len, | |
500 | inferior *inf) override; | |
501 | ||
502 | void stop (ptid_t) override; | |
503 | ||
504 | void interrupt () override; | |
505 | ||
506 | void pass_ctrlc () override; | |
507 | ||
508 | enum target_xfer_status xfer_partial (enum target_object object, | |
509 | const char *annex, | |
510 | gdb_byte *readbuf, | |
511 | const gdb_byte *writebuf, | |
512 | ULONGEST offset, ULONGEST len, | |
513 | ULONGEST *xfered_len) override; | |
514 | ||
515 | ULONGEST get_memory_xfer_limit () override; | |
516 | ||
517 | void rcmd (const char *command, struct ui_file *output) override; | |
518 | ||
519 | char *pid_to_exec_file (int pid) override; | |
520 | ||
521 | void log_command (const char *cmd) override | |
522 | { | |
523 | serial_log_command (this, cmd); | |
524 | } | |
525 | ||
526 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
527 | CORE_ADDR load_module_addr, | |
528 | CORE_ADDR offset) override; | |
529 | ||
57810aa7 PA |
530 | bool has_all_memory () override { return default_child_has_all_memory (); } |
531 | bool has_memory () override { return default_child_has_memory (); } | |
532 | bool has_stack () override { return default_child_has_stack (); } | |
533 | bool has_registers () override { return default_child_has_registers (); } | |
534 | bool has_execution (ptid_t ptid) override { return default_child_has_execution (ptid); } | |
f6ac5f3d | 535 | |
57810aa7 | 536 | bool can_execute_reverse () override; |
f6ac5f3d PA |
537 | |
538 | std::vector<mem_region> memory_map () override; | |
539 | ||
540 | void flash_erase (ULONGEST address, LONGEST length) override; | |
541 | ||
542 | void flash_done () override; | |
543 | ||
544 | const struct target_desc *read_description () override; | |
545 | ||
546 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
547 | const gdb_byte *pattern, ULONGEST pattern_len, | |
548 | CORE_ADDR *found_addrp) override; | |
549 | ||
57810aa7 | 550 | bool can_async_p () override; |
f6ac5f3d | 551 | |
57810aa7 | 552 | bool is_async_p () override; |
f6ac5f3d PA |
553 | |
554 | void async (int) override; | |
555 | ||
556 | void thread_events (int) override; | |
557 | ||
558 | int can_do_single_step () override; | |
559 | ||
560 | void terminal_inferior () override; | |
561 | ||
562 | void terminal_ours () override; | |
563 | ||
57810aa7 | 564 | bool supports_non_stop () override; |
f6ac5f3d | 565 | |
57810aa7 | 566 | bool supports_multi_process () override; |
f6ac5f3d | 567 | |
57810aa7 | 568 | bool supports_disable_randomization () override; |
f6ac5f3d | 569 | |
57810aa7 | 570 | bool filesystem_is_local () override; |
f6ac5f3d PA |
571 | |
572 | ||
573 | int fileio_open (struct inferior *inf, const char *filename, | |
574 | int flags, int mode, int warn_if_slow, | |
575 | int *target_errno) override; | |
576 | ||
577 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
578 | ULONGEST offset, int *target_errno) override; | |
579 | ||
580 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
581 | ULONGEST offset, int *target_errno) override; | |
582 | ||
583 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
584 | ||
585 | int fileio_close (int fd, int *target_errno) override; | |
586 | ||
587 | int fileio_unlink (struct inferior *inf, | |
588 | const char *filename, | |
589 | int *target_errno) override; | |
590 | ||
591 | gdb::optional<std::string> | |
592 | fileio_readlink (struct inferior *inf, | |
593 | const char *filename, | |
594 | int *target_errno) override; | |
595 | ||
57810aa7 | 596 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 597 | |
57810aa7 | 598 | bool supports_string_tracing () override; |
f6ac5f3d | 599 | |
57810aa7 | 600 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 601 | |
57810aa7 | 602 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
603 | |
604 | void trace_init () override; | |
605 | ||
606 | void download_tracepoint (struct bp_location *location) override; | |
607 | ||
57810aa7 | 608 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
609 | |
610 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
611 | ||
612 | void enable_tracepoint (struct bp_location *location) override; | |
613 | ||
614 | void disable_tracepoint (struct bp_location *location) override; | |
615 | ||
616 | void trace_set_readonly_regions () override; | |
617 | ||
618 | void trace_start () override; | |
619 | ||
620 | int get_trace_status (struct trace_status *ts) override; | |
621 | ||
622 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
623 | override; | |
624 | ||
625 | void trace_stop () override; | |
626 | ||
627 | int trace_find (enum trace_find_type type, int num, | |
628 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
629 | ||
57810aa7 | 630 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
631 | |
632 | int save_trace_data (const char *filename) override; | |
633 | ||
634 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
635 | ||
636 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
637 | ||
638 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
639 | ||
640 | int get_min_fast_tracepoint_insn_len () override; | |
641 | ||
642 | void set_disconnected_tracing (int val) override; | |
643 | ||
644 | void set_circular_trace_buffer (int val) override; | |
645 | ||
646 | void set_trace_buffer_size (LONGEST val) override; | |
647 | ||
57810aa7 PA |
648 | bool set_trace_notes (const char *user, const char *notes, |
649 | const char *stopnotes) override; | |
f6ac5f3d PA |
650 | |
651 | int core_of_thread (ptid_t ptid) override; | |
652 | ||
653 | int verify_memory (const gdb_byte *data, | |
654 | CORE_ADDR memaddr, ULONGEST size) override; | |
655 | ||
656 | ||
57810aa7 | 657 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
658 | |
659 | void set_permissions () override; | |
660 | ||
661 | bool static_tracepoint_marker_at (CORE_ADDR, | |
662 | struct static_tracepoint_marker *marker) | |
663 | override; | |
664 | ||
665 | std::vector<static_tracepoint_marker> | |
666 | static_tracepoint_markers_by_strid (const char *id) override; | |
667 | ||
668 | traceframe_info_up traceframe_info () override; | |
669 | ||
57810aa7 PA |
670 | bool use_agent (bool use) override; |
671 | bool can_use_agent () override; | |
f6ac5f3d PA |
672 | |
673 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
674 | const struct btrace_config *conf) override; | |
675 | ||
676 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
677 | ||
678 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
679 | ||
680 | enum btrace_error read_btrace (struct btrace_data *data, | |
681 | struct btrace_target_info *btinfo, | |
682 | enum btrace_read_type type) override; | |
683 | ||
684 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 685 | bool augmented_libraries_svr4_read () override; |
f6ac5f3d PA |
686 | int follow_fork (int, int) override; |
687 | void follow_exec (struct inferior *, char *) override; | |
688 | int insert_fork_catchpoint (int) override; | |
689 | int remove_fork_catchpoint (int) override; | |
690 | int insert_vfork_catchpoint (int) override; | |
691 | int remove_vfork_catchpoint (int) override; | |
692 | int insert_exec_catchpoint (int) override; | |
693 | int remove_exec_catchpoint (int) override; | |
694 | enum exec_direction_kind execution_direction () override; | |
695 | ||
6b8edb51 PA |
696 | public: /* Remote specific methods. */ |
697 | ||
698 | void remote_download_command_source (int num, ULONGEST addr, | |
699 | struct command_line *cmds); | |
700 | ||
701 | void remote_file_put (const char *local_file, const char *remote_file, | |
702 | int from_tty); | |
703 | void remote_file_get (const char *remote_file, const char *local_file, | |
704 | int from_tty); | |
705 | void remote_file_delete (const char *remote_file, int from_tty); | |
706 | ||
707 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
708 | ULONGEST offset, int *remote_errno); | |
709 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
710 | ULONGEST offset, int *remote_errno); | |
711 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
712 | ULONGEST offset, int *remote_errno); | |
713 | ||
714 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
715 | int *remote_errno, char **attachment, | |
716 | int *attachment_len); | |
717 | int remote_hostio_set_filesystem (struct inferior *inf, | |
718 | int *remote_errno); | |
719 | /* We should get rid of this and use fileio_open directly. */ | |
720 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
721 | int flags, int mode, int warn_if_slow, | |
722 | int *remote_errno); | |
723 | int remote_hostio_close (int fd, int *remote_errno); | |
724 | ||
725 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
726 | int *remote_errno); | |
727 | ||
728 | struct remote_state *get_remote_state (); | |
729 | ||
730 | long get_remote_packet_size (void); | |
731 | long get_memory_packet_size (struct memory_packet_config *config); | |
732 | ||
733 | long get_memory_write_packet_size (); | |
734 | long get_memory_read_packet_size (); | |
735 | ||
736 | char *append_pending_thread_resumptions (char *p, char *endp, | |
737 | ptid_t ptid); | |
d9f719f1 | 738 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 739 | void start_remote (int from_tty, int extended_p); |
6b8edb51 PA |
740 | void remote_detach_1 (int from_tty, struct inferior *inf); |
741 | ||
742 | char *append_resumption (char *p, char *endp, | |
743 | ptid_t ptid, int step, gdb_signal siggnal); | |
744 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
745 | gdb_signal siggnal); | |
746 | ||
747 | void add_current_inferior_and_thread (char *wait_status); | |
748 | ||
749 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
750 | int options); | |
751 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, | |
752 | int options); | |
753 | ||
754 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
755 | target_waitstatus *status); | |
756 | ||
757 | void remote_notice_new_inferior (ptid_t currthread, int executing); | |
758 | ||
759 | void process_initial_stop_replies (int from_tty); | |
760 | ||
761 | void remote_add_thread (ptid_t ptid, bool running, bool executing); | |
762 | ||
763 | void btrace_sync_conf (const btrace_config *conf); | |
764 | ||
765 | void remote_btrace_maybe_reopen (); | |
766 | ||
767 | void remove_new_fork_children (threads_listing_context *context); | |
768 | void kill_new_fork_children (int pid); | |
769 | void discard_pending_stop_replies (struct inferior *inf); | |
770 | int stop_reply_queue_length (); | |
771 | ||
772 | void check_pending_events_prevent_wildcard_vcont | |
773 | (int *may_global_wildcard_vcont); | |
774 | ||
775 | void discard_pending_stop_replies_in_queue (); | |
776 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
777 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
778 | int peek_stop_reply (ptid_t ptid); | |
779 | void remote_parse_stop_reply (char *buf, stop_reply *event); | |
780 | ||
781 | void remote_stop_ns (ptid_t ptid); | |
782 | void remote_interrupt_as (); | |
783 | void remote_interrupt_ns (); | |
784 | ||
785 | char *remote_get_noisy_reply (); | |
786 | int remote_query_attached (int pid); | |
787 | inferior *remote_add_inferior (int fake_pid_p, int pid, int attached, | |
788 | int try_open_exec); | |
789 | ||
790 | ptid_t remote_current_thread (ptid_t oldpid); | |
791 | ptid_t get_current_thread (char *wait_status); | |
792 | ||
793 | void set_thread (ptid_t ptid, int gen); | |
794 | void set_general_thread (ptid_t ptid); | |
795 | void set_continue_thread (ptid_t ptid); | |
796 | void set_general_process (); | |
797 | ||
798 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
799 | ||
800 | int remote_unpack_thread_info_response (char *pkt, threadref *expectedref, | |
801 | gdb_ext_thread_info *info); | |
802 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
803 | gdb_ext_thread_info *info); | |
804 | ||
805 | int parse_threadlist_response (char *pkt, int result_limit, | |
806 | threadref *original_echo, | |
807 | threadref *resultlist, | |
808 | int *doneflag); | |
809 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
810 | int result_limit, int *done, int *result_count, | |
811 | threadref *threadlist); | |
812 | ||
813 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
814 | void *context, int looplimit); | |
815 | ||
816 | int remote_get_threads_with_ql (threads_listing_context *context); | |
817 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
818 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
819 | ||
820 | void extended_remote_restart (); | |
821 | ||
822 | void get_offsets (); | |
823 | ||
824 | void remote_check_symbols (); | |
825 | ||
826 | void remote_supported_packet (const struct protocol_feature *feature, | |
827 | enum packet_support support, | |
828 | const char *argument); | |
829 | ||
830 | void remote_query_supported (); | |
831 | ||
832 | void remote_packet_size (const protocol_feature *feature, | |
833 | packet_support support, const char *value); | |
834 | ||
835 | void remote_serial_quit_handler (); | |
836 | ||
837 | void remote_detach_pid (int pid); | |
838 | ||
839 | void remote_vcont_probe (); | |
840 | ||
841 | void remote_resume_with_hc (ptid_t ptid, int step, | |
842 | gdb_signal siggnal); | |
843 | ||
844 | void send_interrupt_sequence (); | |
845 | void interrupt_query (); | |
846 | ||
847 | void remote_notif_get_pending_events (notif_client *nc); | |
848 | ||
849 | int fetch_register_using_p (struct regcache *regcache, | |
850 | packet_reg *reg); | |
851 | int send_g_packet (); | |
852 | void process_g_packet (struct regcache *regcache); | |
853 | void fetch_registers_using_g (struct regcache *regcache); | |
854 | int store_register_using_P (const struct regcache *regcache, | |
855 | packet_reg *reg); | |
856 | void store_registers_using_G (const struct regcache *regcache); | |
857 | ||
858 | void set_remote_traceframe (); | |
859 | ||
860 | void check_binary_download (CORE_ADDR addr); | |
861 | ||
862 | target_xfer_status remote_write_bytes_aux (const char *header, | |
863 | CORE_ADDR memaddr, | |
864 | const gdb_byte *myaddr, | |
865 | ULONGEST len_units, | |
866 | int unit_size, | |
867 | ULONGEST *xfered_len_units, | |
868 | char packet_format, | |
869 | int use_length); | |
870 | ||
871 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
872 | const gdb_byte *myaddr, ULONGEST len, | |
873 | int unit_size, ULONGEST *xfered_len); | |
874 | ||
875 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
876 | ULONGEST len_units, | |
877 | int unit_size, ULONGEST *xfered_len_units); | |
878 | ||
879 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
880 | ULONGEST memaddr, | |
881 | ULONGEST len, | |
882 | int unit_size, | |
883 | ULONGEST *xfered_len); | |
884 | ||
885 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
886 | gdb_byte *myaddr, ULONGEST len, | |
887 | int unit_size, | |
888 | ULONGEST *xfered_len); | |
889 | ||
890 | packet_result remote_send_printf (const char *format, ...) | |
891 | ATTRIBUTE_PRINTF (2, 3); | |
892 | ||
893 | target_xfer_status remote_flash_write (ULONGEST address, | |
894 | ULONGEST length, ULONGEST *xfered_len, | |
895 | const gdb_byte *data); | |
896 | ||
897 | int readchar (int timeout); | |
898 | ||
899 | void remote_serial_write (const char *str, int len); | |
900 | ||
901 | int putpkt (const char *buf); | |
902 | int putpkt_binary (const char *buf, int cnt); | |
903 | ||
904 | void skip_frame (); | |
905 | long read_frame (char **buf_p, long *sizeof_buf); | |
906 | void getpkt (char **buf, long *sizeof_buf, int forever); | |
907 | int getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, | |
908 | int expecting_notif, int *is_notif); | |
909 | int getpkt_sane (char **buf, long *sizeof_buf, int forever); | |
910 | int getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, | |
911 | int *is_notif); | |
912 | int remote_vkill (int pid); | |
913 | void remote_kill_k (); | |
914 | ||
915 | void extended_remote_disable_randomization (int val); | |
916 | int extended_remote_run (const std::string &args); | |
917 | ||
918 | void send_environment_packet (const char *action, | |
919 | const char *packet, | |
920 | const char *value); | |
921 | ||
922 | void extended_remote_environment_support (); | |
3c69da40 | 923 | void extended_remote_set_inferior_cwd (); |
80152258 | 924 | |
3c69da40 PA |
925 | target_xfer_status remote_write_qxfer (const char *object_name, |
926 | const char *annex, | |
927 | const gdb_byte *writebuf, | |
928 | ULONGEST offset, LONGEST len, | |
929 | ULONGEST *xfered_len, | |
930 | struct packet_config *packet); | |
43c3a0e4 | 931 | |
3c69da40 PA |
932 | target_xfer_status remote_read_qxfer (const char *object_name, |
933 | const char *annex, | |
934 | gdb_byte *readbuf, ULONGEST offset, | |
935 | LONGEST len, | |
936 | ULONGEST *xfered_len, | |
937 | struct packet_config *packet); | |
43c3a0e4 | 938 | |
3c69da40 | 939 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 940 | |
3c69da40 | 941 | bool vcont_r_supported (); |
43c3a0e4 | 942 | |
3c69da40 | 943 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 944 | |
3c69da40 | 945 | private: /* data fields */ |
43c3a0e4 | 946 | |
3c69da40 PA |
947 | /* The remote state. Don't reference this directly. Use the |
948 | get_remote_state method instead. */ | |
949 | remote_state m_remote_state; | |
43c3a0e4 PA |
950 | }; |
951 | ||
3c69da40 PA |
952 | static const target_info extended_remote_target_info = { |
953 | "extended-remote", | |
954 | N_("Extended remote serial target in gdb-specific protocol"), | |
955 | remote_doc | |
956 | }; | |
ea9c271d | 957 | |
3c69da40 PA |
958 | /* Set up the extended remote target by extending the standard remote |
959 | target and adding to it. */ | |
960 | ||
961 | class extended_remote_target final : public remote_target | |
ea9c271d | 962 | { |
9d6eea31 | 963 | public: |
3c69da40 PA |
964 | const target_info &info () const override |
965 | { return extended_remote_target_info; } | |
9d6eea31 | 966 | |
3c69da40 PA |
967 | /* Open an extended-remote connection. */ |
968 | static void open (const char *, int); | |
de44f5a7 | 969 | |
3c69da40 PA |
970 | bool can_create_inferior () override { return true; } |
971 | void create_inferior (const char *, const std::string &, | |
972 | char **, int) override; | |
9d6eea31 | 973 | |
3c69da40 | 974 | void detach (inferior *, int) override; |
9d6eea31 | 975 | |
3c69da40 PA |
976 | bool can_attach () override { return true; } |
977 | void attach (const char *, int) override; | |
be2a5f71 | 978 | |
3c69da40 PA |
979 | void post_attach (int) override; |
980 | bool supports_disable_randomization () override; | |
981 | }; | |
1e51243a | 982 | |
3c69da40 PA |
983 | /* Per-program-space data key. */ |
984 | static const struct program_space_data *remote_pspace_data; | |
2d717e4f | 985 | |
3c69da40 PA |
986 | /* The variable registered as the control variable used by the |
987 | remote exec-file commands. While the remote exec-file setting is | |
988 | per-program-space, the set/show machinery uses this as the | |
989 | location of the remote exec-file value. */ | |
990 | static char *remote_exec_file_var; | |
a6f3e723 | 991 | |
3c69da40 PA |
992 | /* The size to align memory write packets, when practical. The protocol |
993 | does not guarantee any alignment, and gdb will generate short | |
994 | writes and unaligned writes, but even as a best-effort attempt this | |
995 | can improve bulk transfers. For instance, if a write is misaligned | |
996 | relative to the target's data bus, the stub may need to make an extra | |
997 | round trip fetching data from the target. This doesn't make a | |
998 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 999 | |
3c69da40 PA |
1000 | The alignment chosen is arbitrary; usually data bus width is |
1001 | important here, not the possibly larger cache line size. */ | |
1002 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1003 | |
3c69da40 | 1004 | /* Prototypes for local functions. */ |
74531fed | 1005 | |
3c69da40 | 1006 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1007 | |
3c69da40 | 1008 | static int stubhex (int ch); |
5d93a237 | 1009 | |
3c69da40 | 1010 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1011 | |
3c69da40 | 1012 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1013 | |
3c69da40 | 1014 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1015 | |
3c69da40 | 1016 | static void print_packet (const char *); |
747dc59d | 1017 | |
3c69da40 | 1018 | static int stub_unpack_int (char *buff, int fieldlength); |
5e4a05c4 | 1019 | |
3c69da40 | 1020 | struct packet_config; |
b73be471 | 1021 | |
3c69da40 | 1022 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1023 | |
3c69da40 PA |
1024 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1025 | int from_tty, | |
1026 | struct cmd_list_element *c, | |
1027 | const char *value); | |
8e88304f | 1028 | |
3c69da40 | 1029 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1030 | |
3c69da40 | 1031 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1032 | |
3c69da40 | 1033 | static int remote_read_description_p (struct target_ops *target); |
88b496c3 | 1034 | |
3c69da40 | 1035 | static void remote_console_output (char *msg); |
5965e028 | 1036 | |
3c69da40 | 1037 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1038 | |
3c69da40 | 1039 | static void remote_unpush_and_throw (void); |
15a201c8 | 1040 | |
3c69da40 | 1041 | /* For "remote". */ |
80152258 | 1042 | |
3c69da40 | 1043 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1044 | |
3c69da40 | 1045 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1046 | |
3c69da40 PA |
1047 | static struct cmd_list_element *remote_set_cmdlist; |
1048 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1049 | |
3c69da40 | 1050 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1051 | |
3c69da40 PA |
1052 | static int use_range_stepping = 1; |
1053 | ||
1054 | /* The max number of chars in debug output. The rest of chars are | |
1055 | omitted. */ | |
1056 | ||
1057 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
ea9c271d | 1058 | |
7aabaf9d SM |
1059 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1060 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1061 | { |
7aabaf9d SM |
1062 | std::string extra; |
1063 | std::string name; | |
1064 | int core = -1; | |
799a2abe | 1065 | |
f6327dcb KB |
1066 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1067 | sequence of bytes. */ | |
7aabaf9d | 1068 | gdb::byte_vector thread_handle; |
f6327dcb | 1069 | |
799a2abe | 1070 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1071 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1072 | |
1073 | /* This is set to the data address of the access causing the target | |
1074 | to stop for a watchpoint. */ | |
7aabaf9d | 1075 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
1076 | |
1077 | /* Fields used by the vCont action coalescing implemented in | |
1078 | remote_resume / remote_commit_resume. remote_resume stores each | |
1079 | thread's last resume request in these fields, so that a later | |
1080 | remote_commit_resume knows which is the proper action for this | |
1081 | thread to include in the vCont packet. */ | |
1082 | ||
1083 | /* True if the last target_resume call for this thread was a step | |
1084 | request, false if a continue request. */ | |
7aabaf9d | 1085 | int last_resume_step = 0; |
85ad3aaf PA |
1086 | |
1087 | /* The signal specified in the last target_resume call for this | |
1088 | thread. */ | |
7aabaf9d | 1089 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
1090 | |
1091 | /* Whether this thread was already vCont-resumed on the remote | |
1092 | side. */ | |
7aabaf9d | 1093 | int vcont_resumed = 0; |
dc146f7c VP |
1094 | }; |
1095 | ||
de44f5a7 PA |
1096 | remote_state::remote_state () |
1097 | { | |
1098 | /* The default buffer size is unimportant; it will be expanded | |
1099 | whenever a larger buffer is needed. */ | |
1100 | this->buf_size = 400; | |
1101 | this->buf = (char *) xmalloc (this->buf_size); | |
1102 | } | |
1103 | ||
1104 | remote_state::~remote_state () | |
1105 | { | |
1106 | xfree (this->last_pass_packet); | |
1107 | xfree (this->last_program_signals_packet); | |
1108 | xfree (this->buf); | |
1109 | xfree (this->finished_object); | |
1110 | xfree (this->finished_annex); | |
cf792862 TT |
1111 | } |
1112 | ||
35b1e5cc SS |
1113 | /* Utility: generate error from an incoming stub packet. */ |
1114 | static void | |
1115 | trace_error (char *buf) | |
1116 | { | |
1117 | if (*buf++ != 'E') | |
1118 | return; /* not an error msg */ | |
1119 | switch (*buf) | |
1120 | { | |
1121 | case '1': /* malformed packet error */ | |
1122 | if (*++buf == '0') /* general case: */ | |
1123 | error (_("remote.c: error in outgoing packet.")); | |
1124 | else | |
1125 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1126 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1127 | default: |
1128 | error (_("Target returns error code '%s'."), buf); | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1133 | |
6b8edb51 PA |
1134 | char * |
1135 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1136 | { |
b6bb3468 PA |
1137 | struct remote_state *rs = get_remote_state (); |
1138 | ||
35b1e5cc SS |
1139 | do /* Loop on reply from remote stub. */ |
1140 | { | |
1141 | char *buf; | |
a744cf53 | 1142 | |
0df8b418 | 1143 | QUIT; /* Allow user to bail out with ^C. */ |
b6bb3468 PA |
1144 | getpkt (&rs->buf, &rs->buf_size, 0); |
1145 | buf = rs->buf; | |
ad91cd99 | 1146 | if (buf[0] == 'E') |
35b1e5cc | 1147 | trace_error (buf); |
61012eef | 1148 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1149 | { |
1150 | ULONGEST ul; | |
1151 | CORE_ADDR from, to, org_to; | |
256642e8 | 1152 | const char *p, *pp; |
dde08ee1 | 1153 | int adjusted_size = 0; |
7556d4a4 | 1154 | int relocated = 0; |
dde08ee1 PA |
1155 | |
1156 | p = buf + strlen ("qRelocInsn:"); | |
1157 | pp = unpack_varlen_hex (p, &ul); | |
1158 | if (*pp != ';') | |
cb91c06a | 1159 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1160 | from = ul; |
1161 | ||
1162 | p = pp + 1; | |
a9cbf802 | 1163 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1164 | to = ul; |
1165 | ||
1166 | org_to = to; | |
1167 | ||
492d29ea | 1168 | TRY |
dde08ee1 | 1169 | { |
f5656ead | 1170 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1171 | relocated = 1; |
dde08ee1 | 1172 | } |
492d29ea | 1173 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
1174 | { |
1175 | if (ex.error == MEMORY_ERROR) | |
1176 | { | |
1177 | /* Propagate memory errors silently back to the | |
1178 | target. The stub may have limited the range of | |
1179 | addresses we can write to, for example. */ | |
1180 | } | |
1181 | else | |
1182 | { | |
1183 | /* Something unexpectedly bad happened. Be verbose | |
1184 | so we can tell what, and propagate the error back | |
1185 | to the stub, so it doesn't get stuck waiting for | |
1186 | a response. */ | |
1187 | exception_fprintf (gdb_stderr, ex, | |
1188 | _("warning: relocating instruction: ")); | |
1189 | } | |
1190 | putpkt ("E01"); | |
1191 | } | |
492d29ea | 1192 | END_CATCH |
7556d4a4 PA |
1193 | |
1194 | if (relocated) | |
dde08ee1 PA |
1195 | { |
1196 | adjusted_size = to - org_to; | |
1197 | ||
b6bb3468 | 1198 | xsnprintf (buf, rs->buf_size, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1199 | putpkt (buf); |
1200 | } | |
dde08ee1 | 1201 | } |
ad91cd99 | 1202 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1203 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1204 | else | |
0df8b418 | 1205 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1206 | } |
1207 | while (1); | |
1208 | } | |
3c3bea1c | 1209 | |
9d6eea31 PA |
1210 | struct remote_arch_state * |
1211 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1212 | { |
43c3a0e4 PA |
1213 | remote_arch_state *rsa; |
1214 | ||
1215 | auto it = this->m_arch_states.find (gdbarch); | |
1216 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1217 | { |
43c3a0e4 PA |
1218 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1219 | std::forward_as_tuple (gdbarch), | |
1220 | std::forward_as_tuple (gdbarch)); | |
1221 | rsa = &p.first->second; | |
9d6eea31 PA |
1222 | |
1223 | /* Make sure that the packet buffer is plenty big enough for | |
1224 | this architecture. */ | |
1225 | if (this->buf_size < rsa->remote_packet_size) | |
1226 | { | |
1227 | this->buf_size = 2 * rsa->remote_packet_size; | |
1228 | this->buf = (char *) xrealloc (this->buf, this->buf_size); | |
1229 | } | |
1230 | } | |
43c3a0e4 PA |
1231 | else |
1232 | rsa = &it->second; | |
1233 | ||
1234 | return rsa; | |
d01949b6 AC |
1235 | } |
1236 | ||
0b83947e DJ |
1237 | /* Fetch the global remote target state. */ |
1238 | ||
6b8edb51 PA |
1239 | remote_state * |
1240 | remote_target::get_remote_state () | |
0b83947e DJ |
1241 | { |
1242 | /* Make sure that the remote architecture state has been | |
1243 | initialized, because doing so might reallocate rs->buf. Any | |
1244 | function which calls getpkt also needs to be mindful of changes | |
1245 | to rs->buf, but this call limits the number of places which run | |
1246 | into trouble. */ | |
3c69da40 | 1247 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1248 | |
3c69da40 | 1249 | return &m_remote_state; |
0b83947e DJ |
1250 | } |
1251 | ||
94585166 DB |
1252 | /* Cleanup routine for the remote module's pspace data. */ |
1253 | ||
1254 | static void | |
1255 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
1256 | { | |
19ba03f4 | 1257 | char *remote_exec_file = (char *) arg; |
94585166 DB |
1258 | |
1259 | xfree (remote_exec_file); | |
1260 | } | |
1261 | ||
1262 | /* Fetch the remote exec-file from the current program space. */ | |
1263 | ||
1264 | static const char * | |
1265 | get_remote_exec_file (void) | |
1266 | { | |
1267 | char *remote_exec_file; | |
1268 | ||
19ba03f4 SM |
1269 | remote_exec_file |
1270 | = (char *) program_space_data (current_program_space, | |
1271 | remote_pspace_data); | |
94585166 DB |
1272 | if (remote_exec_file == NULL) |
1273 | return ""; | |
1274 | ||
1275 | return remote_exec_file; | |
1276 | } | |
1277 | ||
1278 | /* Set the remote exec file for PSPACE. */ | |
1279 | ||
1280 | static void | |
1281 | set_pspace_remote_exec_file (struct program_space *pspace, | |
1282 | char *remote_exec_file) | |
1283 | { | |
19ba03f4 | 1284 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
1285 | |
1286 | xfree (old_file); | |
1287 | set_program_space_data (pspace, remote_pspace_data, | |
1288 | xstrdup (remote_exec_file)); | |
1289 | } | |
1290 | ||
1291 | /* The "set/show remote exec-file" set command hook. */ | |
1292 | ||
1293 | static void | |
eb4c3f4a | 1294 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1295 | struct cmd_list_element *c) |
1296 | { | |
1297 | gdb_assert (remote_exec_file_var != NULL); | |
1298 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1299 | } | |
1300 | ||
1301 | /* The "set/show remote exec-file" show command hook. */ | |
1302 | ||
1303 | static void | |
1304 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1305 | struct cmd_list_element *cmd, const char *value) | |
1306 | { | |
1307 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
1308 | } | |
1309 | ||
74ca34ce DJ |
1310 | static int |
1311 | compare_pnums (const void *lhs_, const void *rhs_) | |
1312 | { | |
19ba03f4 SM |
1313 | const struct packet_reg * const *lhs |
1314 | = (const struct packet_reg * const *) lhs_; | |
1315 | const struct packet_reg * const *rhs | |
1316 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
1317 | |
1318 | if ((*lhs)->pnum < (*rhs)->pnum) | |
1319 | return -1; | |
1320 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
1321 | return 0; | |
1322 | else | |
1323 | return 1; | |
1324 | } | |
1325 | ||
c21236dc PA |
1326 | static int |
1327 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1328 | { |
74ca34ce | 1329 | int regnum, num_remote_regs, offset; |
74ca34ce | 1330 | struct packet_reg **remote_regs; |
ea9c271d | 1331 | |
4a22f64d | 1332 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1333 | { |
c21236dc | 1334 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1335 | |
4a22f64d | 1336 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1337 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1338 | r->pnum = -1; | |
1339 | else | |
1340 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1341 | ||
b323314b | 1342 | r->regnum = regnum; |
74ca34ce DJ |
1343 | } |
1344 | ||
1345 | /* Define the g/G packet format as the contents of each register | |
1346 | with a remote protocol number, in order of ascending protocol | |
1347 | number. */ | |
1348 | ||
224c3ddb | 1349 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1350 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1351 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1352 | regnum++) |
c21236dc PA |
1353 | if (regs[regnum].pnum != -1) |
1354 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1355 | |
74ca34ce DJ |
1356 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
1357 | compare_pnums); | |
1358 | ||
1359 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1360 | { | |
1361 | remote_regs[regnum]->in_g_packet = 1; | |
1362 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1363 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1364 | } |
1365 | ||
c21236dc PA |
1366 | return offset; |
1367 | } | |
1368 | ||
1369 | /* Given the architecture described by GDBARCH, return the remote | |
1370 | protocol register's number and the register's offset in the g/G | |
1371 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1372 | If the target does not have a mapping for REGNUM, return false, | |
1373 | otherwise, return true. */ | |
1374 | ||
1375 | int | |
1376 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1377 | int *pnum, int *poffset) | |
1378 | { | |
c21236dc PA |
1379 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1380 | ||
b80406ac | 1381 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1382 | |
b80406ac | 1383 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1384 | |
1385 | *pnum = regs[regnum].pnum; | |
1386 | *poffset = regs[regnum].offset; | |
1387 | ||
c21236dc PA |
1388 | return *pnum != -1; |
1389 | } | |
1390 | ||
9d6eea31 | 1391 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1392 | { |
c21236dc PA |
1393 | /* Use the architecture to build a regnum<->pnum table, which will be |
1394 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1395 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1396 | |
74ca34ce DJ |
1397 | /* Record the maximum possible size of the g packet - it may turn out |
1398 | to be smaller. */ | |
9d6eea31 PA |
1399 | this->sizeof_g_packet |
1400 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1401 | |
0df8b418 | 1402 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1403 | remote stubs have a hardwired buffer size of 400 bytes |
1404 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1405 | as the maximum packet-size to ensure that the packet and an extra | |
1406 | NUL character can always fit in the buffer. This stops GDB | |
1407 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1408 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1409 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1410 | |
ea9c271d | 1411 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1412 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1413 | |
1414 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1415 | default, adjust the size accordingly. Remember that each byte is |
1416 | encoded as two characters. 32 is the overhead for the packet | |
1417 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1418 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1419 | little. */ |
9d6eea31 PA |
1420 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1421 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1422 | } |
1423 | ||
6b8edb51 PA |
1424 | /* Get a pointer to the current remote target. If not connected to a |
1425 | remote target, return NULL. */ | |
1426 | ||
1427 | static remote_target * | |
1428 | get_current_remote_target () | |
1429 | { | |
1430 | target_ops *proc_target = find_target_at (process_stratum); | |
1431 | return dynamic_cast<remote_target *> (proc_target); | |
1432 | } | |
1433 | ||
ea9c271d DJ |
1434 | /* Return the current allowed size of a remote packet. This is |
1435 | inferred from the current architecture, and should be used to | |
1436 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1437 | long |
1438 | remote_target::get_remote_packet_size () | |
ea9c271d | 1439 | { |
be2a5f71 | 1440 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1441 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1442 | |
be2a5f71 DJ |
1443 | if (rs->explicit_packet_size) |
1444 | return rs->explicit_packet_size; | |
1445 | ||
ea9c271d | 1446 | return rsa->remote_packet_size; |
d01949b6 AC |
1447 | } |
1448 | ||
ad10f812 | 1449 | static struct packet_reg * |
5cd63fda PA |
1450 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1451 | long regnum) | |
ad10f812 | 1452 | { |
5cd63fda | 1453 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1454 | return NULL; |
1455 | else | |
ad10f812 | 1456 | { |
ea9c271d | 1457 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1458 | |
b323314b AC |
1459 | gdb_assert (r->regnum == regnum); |
1460 | return r; | |
ad10f812 | 1461 | } |
ad10f812 AC |
1462 | } |
1463 | ||
1464 | static struct packet_reg * | |
5cd63fda PA |
1465 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1466 | LONGEST pnum) | |
ad10f812 | 1467 | { |
b323314b | 1468 | int i; |
a744cf53 | 1469 | |
5cd63fda | 1470 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1471 | { |
ea9c271d | 1472 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1473 | |
b323314b AC |
1474 | if (r->pnum == pnum) |
1475 | return r; | |
ad10f812 AC |
1476 | } |
1477 | return NULL; | |
d01949b6 AC |
1478 | } |
1479 | ||
9a7071a8 JB |
1480 | /* Allow the user to specify what sequence to send to the remote |
1481 | when he requests a program interruption: Although ^C is usually | |
1482 | what remote systems expect (this is the default, here), it is | |
1483 | sometimes preferable to send a break. On other systems such | |
1484 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1485 | is required in order to interrupt the execution. */ | |
1486 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1487 | const char interrupt_sequence_break[] = "BREAK"; | |
1488 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1489 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1490 | { |
1491 | interrupt_sequence_control_c, | |
1492 | interrupt_sequence_break, | |
1493 | interrupt_sequence_break_g, | |
1494 | NULL | |
1495 | }; | |
1496 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1497 | ||
1498 | static void | |
1499 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1500 | struct cmd_list_element *c, | |
1501 | const char *value) | |
1502 | { | |
1503 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1504 | fprintf_filtered (file, | |
1505 | _("Send the ASCII ETX character (Ctrl-c) " | |
1506 | "to the remote target to interrupt the " | |
1507 | "execution of the program.\n")); | |
1508 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1509 | fprintf_filtered (file, | |
1510 | _("send a break signal to the remote target " | |
1511 | "to interrupt the execution of the program.\n")); | |
1512 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1513 | fprintf_filtered (file, | |
1514 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1515 | "the remote target to interrupt the execution " | |
1516 | "of Linux kernel.\n")); | |
1517 | else | |
1518 | internal_error (__FILE__, __LINE__, | |
1519 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1520 | interrupt_sequence_mode); | |
1521 | } | |
6426a772 | 1522 | |
9a7071a8 JB |
1523 | /* This boolean variable specifies whether interrupt_sequence is sent |
1524 | to the remote target when gdb connects to it. | |
1525 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1526 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
1527 | static int interrupt_on_connect = 0; | |
c906108c | 1528 | |
9a7071a8 JB |
1529 | /* This variable is used to implement the "set/show remotebreak" commands. |
1530 | Since these commands are now deprecated in favor of "set/show remote | |
1531 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
1532 | static int remote_break; |
1533 | ||
9a7071a8 | 1534 | static void |
eb4c3f4a | 1535 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1536 | { |
1537 | if (remote_break) | |
1538 | interrupt_sequence_mode = interrupt_sequence_break; | |
1539 | else | |
1540 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1541 | } | |
1542 | ||
1543 | static void | |
1544 | show_remotebreak (struct ui_file *file, int from_tty, | |
1545 | struct cmd_list_element *c, | |
1546 | const char *value) | |
1547 | { | |
1548 | } | |
1549 | ||
c906108c SS |
1550 | /* This variable sets the number of bits in an address that are to be |
1551 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1552 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1553 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1554 | initial implementation of remote.c restricted the address sent in | |
1555 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1556 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1557 | address was never sent. Since fixing this bug may cause a break in | |
1558 | some remote targets this variable is principly provided to | |
23860348 | 1559 | facilitate backward compatibility. */ |
c906108c | 1560 | |
883b9c6c | 1561 | static unsigned int remote_address_size; |
c906108c | 1562 | |
11cf8741 | 1563 | \f |
11cf8741 | 1564 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1565 | memory read/write packet. MIN (rsa->remote_packet_size, |
1566 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1567 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1568 | (speed up transfers). The variables ``preferred_*'' (the user |
1569 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1570 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1571 | |
1572 | struct memory_packet_config | |
1573 | { | |
a121b7c1 | 1574 | const char *name; |
11cf8741 JM |
1575 | long size; |
1576 | int fixed_p; | |
1577 | }; | |
1578 | ||
cc0be08f PA |
1579 | /* The default max memory-write-packet-size, when the setting is |
1580 | "fixed". The 16k is historical. (It came from older GDB's using | |
1581 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1582 | don't cope very well with large alloca calls.) */ | |
1583 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1584 | |
1585 | /* The minimum remote packet size for memory transfers. Ensures we | |
1586 | can write at least one byte. */ | |
1587 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1588 | ||
cc0be08f PA |
1589 | /* Get the memory packet size, assuming it is fixed. */ |
1590 | ||
1591 | static long | |
1592 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1593 | { | |
1594 | gdb_assert (config->fixed_p); | |
1595 | ||
1596 | if (config->size <= 0) | |
1597 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1598 | else | |
1599 | return config->size; | |
1600 | } | |
1601 | ||
11cf8741 JM |
1602 | /* Compute the current size of a read/write packet. Since this makes |
1603 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1604 | ||
6b8edb51 PA |
1605 | long |
1606 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1607 | { |
d01949b6 | 1608 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1609 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1610 | |
11cf8741 JM |
1611 | long what_they_get; |
1612 | if (config->fixed_p) | |
cc0be08f | 1613 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1614 | else |
1615 | { | |
ea9c271d | 1616 | what_they_get = get_remote_packet_size (); |
23860348 | 1617 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1618 | if (config->size > 0 |
1619 | && what_they_get > config->size) | |
1620 | what_they_get = config->size; | |
be2a5f71 DJ |
1621 | |
1622 | /* Limit it to the size of the targets ``g'' response unless we have | |
1623 | permission from the stub to use a larger packet size. */ | |
1624 | if (rs->explicit_packet_size == 0 | |
1625 | && rsa->actual_register_packet_size > 0 | |
1626 | && what_they_get > rsa->actual_register_packet_size) | |
1627 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1628 | } |
a5c0808e PA |
1629 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1630 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1631 | |
1632 | /* Make sure there is room in the global buffer for this packet | |
1633 | (including its trailing NUL byte). */ | |
1634 | if (rs->buf_size < what_they_get + 1) | |
1635 | { | |
1636 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1637 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1638 | } |
1639 | ||
11cf8741 JM |
1640 | return what_they_get; |
1641 | } | |
1642 | ||
0df8b418 | 1643 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1644 | something really big then do a sanity check. */ |
11cf8741 JM |
1645 | |
1646 | static void | |
ac88e2de | 1647 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1648 | { |
1649 | int fixed_p = config->fixed_p; | |
1650 | long size = config->size; | |
a744cf53 | 1651 | |
11cf8741 | 1652 | if (args == NULL) |
8a3fe4f8 | 1653 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1654 | else if (strcmp (args, "hard") == 0 |
1655 | || strcmp (args, "fixed") == 0) | |
1656 | fixed_p = 1; | |
1657 | else if (strcmp (args, "soft") == 0 | |
1658 | || strcmp (args, "limit") == 0) | |
1659 | fixed_p = 0; | |
1660 | else | |
1661 | { | |
1662 | char *end; | |
a744cf53 | 1663 | |
11cf8741 JM |
1664 | size = strtoul (args, &end, 0); |
1665 | if (args == end) | |
8a3fe4f8 | 1666 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1667 | |
1668 | /* Instead of explicitly capping the size of a packet to or | |
1669 | disallowing it, the user is allowed to set the size to | |
1670 | something arbitrarily large. */ | |
11cf8741 | 1671 | } |
a5c0808e | 1672 | |
23860348 | 1673 | /* Extra checks? */ |
11cf8741 JM |
1674 | if (fixed_p && !config->fixed_p) |
1675 | { | |
cc0be08f PA |
1676 | /* So that the query shows the correct value. */ |
1677 | long query_size = (size <= 0 | |
1678 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1679 | : size); | |
1680 | ||
e2e0b3e5 AC |
1681 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1682 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1683 | config->name, query_size)) |
8a3fe4f8 | 1684 | error (_("Packet size not changed.")); |
11cf8741 | 1685 | } |
23860348 | 1686 | /* Update the config. */ |
11cf8741 JM |
1687 | config->fixed_p = fixed_p; |
1688 | config->size = size; | |
1689 | } | |
1690 | ||
1691 | static void | |
1692 | show_memory_packet_size (struct memory_packet_config *config) | |
1693 | { | |
cc0be08f PA |
1694 | if (config->size == 0) |
1695 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1696 | else | |
1697 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1698 | if (config->fixed_p) |
a3f17187 | 1699 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1700 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1701 | else |
cc0be08f | 1702 | { |
6b8edb51 | 1703 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1704 | |
6b8edb51 | 1705 | if (remote != NULL) |
cc0be08f | 1706 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1707 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1708 | else |
1709 | puts_filtered ("The actual limit will be further reduced " | |
1710 | "dependent on the target.\n"); | |
1711 | } | |
11cf8741 JM |
1712 | } |
1713 | ||
1714 | static struct memory_packet_config memory_write_packet_config = | |
1715 | { | |
1716 | "memory-write-packet-size", | |
1717 | }; | |
1718 | ||
1719 | static void | |
ac88e2de | 1720 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1721 | { |
1722 | set_memory_packet_size (args, &memory_write_packet_config); | |
1723 | } | |
1724 | ||
1725 | static void | |
ac88e2de | 1726 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1727 | { |
1728 | show_memory_packet_size (&memory_write_packet_config); | |
1729 | } | |
1730 | ||
6b8edb51 PA |
1731 | long |
1732 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1733 | { |
1734 | return get_memory_packet_size (&memory_write_packet_config); | |
1735 | } | |
1736 | ||
1737 | static struct memory_packet_config memory_read_packet_config = | |
1738 | { | |
1739 | "memory-read-packet-size", | |
1740 | }; | |
1741 | ||
1742 | static void | |
ac88e2de | 1743 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1744 | { |
1745 | set_memory_packet_size (args, &memory_read_packet_config); | |
1746 | } | |
1747 | ||
1748 | static void | |
ac88e2de | 1749 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1750 | { |
1751 | show_memory_packet_size (&memory_read_packet_config); | |
1752 | } | |
1753 | ||
6b8edb51 PA |
1754 | long |
1755 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1756 | { |
1757 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1758 | |
11cf8741 JM |
1759 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1760 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1761 | increased beyond this. */ |
1762 | if (size > get_remote_packet_size ()) | |
1763 | size = get_remote_packet_size (); | |
11cf8741 JM |
1764 | return size; |
1765 | } | |
1766 | ||
11cf8741 | 1767 | \f |
5a2468f5 | 1768 | |
5a2468f5 JM |
1769 | struct packet_config |
1770 | { | |
bb572ddd DJ |
1771 | const char *name; |
1772 | const char *title; | |
4082afcc PA |
1773 | |
1774 | /* If auto, GDB auto-detects support for this packet or feature, | |
1775 | either through qSupported, or by trying the packet and looking | |
1776 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1777 | packet. If false, the packet is disabled. Configs that don't |
1778 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1779 | enum auto_boolean detect; |
4082afcc PA |
1780 | |
1781 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1782 | enum packet_support support; |
1783 | }; | |
1784 | ||
4082afcc PA |
1785 | static enum packet_support packet_config_support (struct packet_config *config); |
1786 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1787 | |
1788 | static void | |
fba45db2 | 1789 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1790 | { |
a121b7c1 | 1791 | const char *support = "internal-error"; |
a744cf53 | 1792 | |
4082afcc | 1793 | switch (packet_config_support (config)) |
5a2468f5 JM |
1794 | { |
1795 | case PACKET_ENABLE: | |
1796 | support = "enabled"; | |
1797 | break; | |
1798 | case PACKET_DISABLE: | |
1799 | support = "disabled"; | |
1800 | break; | |
1801 | case PACKET_SUPPORT_UNKNOWN: | |
1802 | support = "unknown"; | |
1803 | break; | |
1804 | } | |
1805 | switch (config->detect) | |
1806 | { | |
7f19b9a2 | 1807 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1808 | printf_filtered (_("Support for the `%s' packet " |
1809 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1810 | config->name, support); |
5a2468f5 | 1811 | break; |
7f19b9a2 AC |
1812 | case AUTO_BOOLEAN_TRUE: |
1813 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1814 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1815 | config->name, support); | |
8e248173 | 1816 | break; |
5a2468f5 JM |
1817 | } |
1818 | } | |
1819 | ||
1820 | static void | |
bb572ddd DJ |
1821 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1822 | const char *title, int legacy) | |
d471ea57 | 1823 | { |
5a2468f5 JM |
1824 | char *set_doc; |
1825 | char *show_doc; | |
d471ea57 | 1826 | char *cmd_name; |
3ed07be4 | 1827 | |
5a2468f5 JM |
1828 | config->name = name; |
1829 | config->title = title; | |
b435e160 AC |
1830 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1831 | name, title); | |
3e43a32a MS |
1832 | show_doc = xstrprintf ("Show current use of remote " |
1833 | "protocol `%s' (%s) packet", | |
b435e160 | 1834 | name, title); |
d471ea57 | 1835 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1836 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1837 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1838 | &config->detect, set_doc, |
1839 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1840 | NULL, |
bb572ddd DJ |
1841 | show_remote_protocol_packet_cmd, |
1842 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1843 | /* The command code copies the documentation strings. */ |
1844 | xfree (set_doc); | |
1845 | xfree (show_doc); | |
23860348 | 1846 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1847 | if (legacy) |
1848 | { | |
1849 | char *legacy_name; | |
a744cf53 | 1850 | |
b435e160 | 1851 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1852 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1853 | &remote_set_cmdlist); |
d471ea57 | 1854 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1855 | &remote_show_cmdlist); |
d471ea57 | 1856 | } |
5a2468f5 JM |
1857 | } |
1858 | ||
d471ea57 | 1859 | static enum packet_result |
a76d924d | 1860 | packet_check_result (const char *buf) |
5a2468f5 | 1861 | { |
d471ea57 | 1862 | if (buf[0] != '\0') |
5a2468f5 | 1863 | { |
d471ea57 | 1864 | /* The stub recognized the packet request. Check that the |
23860348 | 1865 | operation succeeded. */ |
a76d924d DJ |
1866 | if (buf[0] == 'E' |
1867 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1868 | && buf[3] == '\0') | |
1869 | /* "Enn" - definitly an error. */ | |
1870 | return PACKET_ERROR; | |
1871 | ||
1872 | /* Always treat "E." as an error. This will be used for | |
1873 | more verbose error messages, such as E.memtypes. */ | |
1874 | if (buf[0] == 'E' && buf[1] == '.') | |
1875 | return PACKET_ERROR; | |
1876 | ||
1877 | /* The packet may or may not be OK. Just assume it is. */ | |
1878 | return PACKET_OK; | |
1879 | } | |
1880 | else | |
1881 | /* The stub does not support the packet. */ | |
1882 | return PACKET_UNKNOWN; | |
1883 | } | |
1884 | ||
1885 | static enum packet_result | |
1886 | packet_ok (const char *buf, struct packet_config *config) | |
1887 | { | |
1888 | enum packet_result result; | |
1889 | ||
4082afcc PA |
1890 | if (config->detect != AUTO_BOOLEAN_TRUE |
1891 | && config->support == PACKET_DISABLE) | |
1892 | internal_error (__FILE__, __LINE__, | |
1893 | _("packet_ok: attempt to use a disabled packet")); | |
1894 | ||
a76d924d DJ |
1895 | result = packet_check_result (buf); |
1896 | switch (result) | |
1897 | { | |
1898 | case PACKET_OK: | |
1899 | case PACKET_ERROR: | |
1900 | /* The stub recognized the packet request. */ | |
4082afcc | 1901 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1902 | { |
d471ea57 AC |
1903 | if (remote_debug) |
1904 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1905 | "Packet %s (%s) is supported\n", |
1906 | config->name, config->title); | |
d471ea57 | 1907 | config->support = PACKET_ENABLE; |
d471ea57 | 1908 | } |
a76d924d DJ |
1909 | break; |
1910 | case PACKET_UNKNOWN: | |
23860348 | 1911 | /* The stub does not support the packet. */ |
4082afcc PA |
1912 | if (config->detect == AUTO_BOOLEAN_AUTO |
1913 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1914 | { |
4082afcc PA |
1915 | /* If the stub previously indicated that the packet was |
1916 | supported then there is a protocol error. */ | |
1917 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1918 | config->name, config->title); | |
1919 | } | |
1920 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1921 | { | |
1922 | /* The user set it wrong. */ | |
1923 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1924 | config->name, config->title); | |
d471ea57 | 1925 | } |
4082afcc PA |
1926 | |
1927 | if (remote_debug) | |
1928 | fprintf_unfiltered (gdb_stdlog, | |
1929 | "Packet %s (%s) is NOT supported\n", | |
1930 | config->name, config->title); | |
1931 | config->support = PACKET_DISABLE; | |
a76d924d | 1932 | break; |
5a2468f5 | 1933 | } |
a76d924d DJ |
1934 | |
1935 | return result; | |
5a2468f5 JM |
1936 | } |
1937 | ||
444abaca DJ |
1938 | enum { |
1939 | PACKET_vCont = 0, | |
1940 | PACKET_X, | |
1941 | PACKET_qSymbol, | |
1942 | PACKET_P, | |
1943 | PACKET_p, | |
1944 | PACKET_Z0, | |
1945 | PACKET_Z1, | |
1946 | PACKET_Z2, | |
1947 | PACKET_Z3, | |
1948 | PACKET_Z4, | |
15a201c8 | 1949 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1950 | PACKET_vFile_open, |
1951 | PACKET_vFile_pread, | |
1952 | PACKET_vFile_pwrite, | |
1953 | PACKET_vFile_close, | |
1954 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1955 | PACKET_vFile_readlink, |
0a93529c | 1956 | PACKET_vFile_fstat, |
0876f84a | 1957 | PACKET_qXfer_auxv, |
23181151 | 1958 | PACKET_qXfer_features, |
c78fa86a | 1959 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1960 | PACKET_qXfer_libraries, |
2268b414 | 1961 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1962 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1963 | PACKET_qXfer_spu_read, |
1964 | PACKET_qXfer_spu_write, | |
07e059b5 | 1965 | PACKET_qXfer_osdata, |
dc146f7c | 1966 | PACKET_qXfer_threads, |
0fb4aa4b | 1967 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1968 | PACKET_qXfer_traceframe_info, |
169081d0 | 1969 | PACKET_qXfer_uib, |
711e434b | 1970 | PACKET_qGetTIBAddr, |
444abaca | 1971 | PACKET_qGetTLSAddr, |
be2a5f71 | 1972 | PACKET_qSupported, |
bd3eecc3 | 1973 | PACKET_qTStatus, |
89be2091 | 1974 | PACKET_QPassSignals, |
82075af2 | 1975 | PACKET_QCatchSyscalls, |
9b224c5e | 1976 | PACKET_QProgramSignals, |
bc3b087d | 1977 | PACKET_QSetWorkingDir, |
aefd8b33 | 1978 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1979 | PACKET_QEnvironmentHexEncoded, |
1980 | PACKET_QEnvironmentReset, | |
1981 | PACKET_QEnvironmentUnset, | |
936d2992 | 1982 | PACKET_qCRC, |
08388c79 | 1983 | PACKET_qSearch_memory, |
2d717e4f DJ |
1984 | PACKET_vAttach, |
1985 | PACKET_vRun, | |
a6f3e723 | 1986 | PACKET_QStartNoAckMode, |
82f73884 | 1987 | PACKET_vKill, |
4aa995e1 PA |
1988 | PACKET_qXfer_siginfo_read, |
1989 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1990 | PACKET_qAttached, |
4082afcc PA |
1991 | |
1992 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1993 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1994 | |
1995 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1996 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1997 | |
1998 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1999 | PACKET_BreakpointCommands, |
4082afcc PA |
2000 | |
2001 | /* Support for fast tracepoints. */ | |
7a697b8d | 2002 | PACKET_FastTracepoints, |
4082afcc PA |
2003 | |
2004 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2005 | PACKET_StaticTracepoints, |
4082afcc PA |
2006 | |
2007 | /* Support for installing tracepoints while a trace experiment is | |
2008 | running. */ | |
1e4d1764 | 2009 | PACKET_InstallInTrace, |
4082afcc | 2010 | |
40ab02ce MS |
2011 | PACKET_bc, |
2012 | PACKET_bs, | |
409873ef | 2013 | PACKET_TracepointSource, |
d914c394 | 2014 | PACKET_QAllow, |
78d85199 | 2015 | PACKET_qXfer_fdpic, |
03583c20 | 2016 | PACKET_QDisableRandomization, |
d1feda86 | 2017 | PACKET_QAgent, |
f6f899bf | 2018 | PACKET_QTBuffer_size, |
9accd112 MM |
2019 | PACKET_Qbtrace_off, |
2020 | PACKET_Qbtrace_bts, | |
b20a6524 | 2021 | PACKET_Qbtrace_pt, |
9accd112 | 2022 | PACKET_qXfer_btrace, |
4082afcc PA |
2023 | |
2024 | /* Support for the QNonStop packet. */ | |
2025 | PACKET_QNonStop, | |
2026 | ||
65706a29 PA |
2027 | /* Support for the QThreadEvents packet. */ |
2028 | PACKET_QThreadEvents, | |
2029 | ||
4082afcc PA |
2030 | /* Support for multi-process extensions. */ |
2031 | PACKET_multiprocess_feature, | |
2032 | ||
2033 | /* Support for enabling and disabling tracepoints while a trace | |
2034 | experiment is running. */ | |
2035 | PACKET_EnableDisableTracepoints_feature, | |
2036 | ||
2037 | /* Support for collecting strings using the tracenz bytecode. */ | |
2038 | PACKET_tracenz_feature, | |
2039 | ||
2040 | /* Support for continuing to run a trace experiment while GDB is | |
2041 | disconnected. */ | |
2042 | PACKET_DisconnectedTracing_feature, | |
2043 | ||
2044 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2045 | PACKET_augmented_libraries_svr4_read_feature, | |
2046 | ||
f4abbc16 MM |
2047 | /* Support for the qXfer:btrace-conf:read packet. */ |
2048 | PACKET_qXfer_btrace_conf, | |
2049 | ||
d33501a5 MM |
2050 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2051 | PACKET_Qbtrace_conf_bts_size, | |
2052 | ||
f7e6eed5 PA |
2053 | /* Support for swbreak+ feature. */ |
2054 | PACKET_swbreak_feature, | |
2055 | ||
2056 | /* Support for hwbreak+ feature. */ | |
2057 | PACKET_hwbreak_feature, | |
2058 | ||
89245bc0 DB |
2059 | /* Support for fork events. */ |
2060 | PACKET_fork_event_feature, | |
2061 | ||
2062 | /* Support for vfork events. */ | |
2063 | PACKET_vfork_event_feature, | |
2064 | ||
b20a6524 MM |
2065 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2066 | PACKET_Qbtrace_conf_pt_size, | |
2067 | ||
94585166 DB |
2068 | /* Support for exec events. */ |
2069 | PACKET_exec_event_feature, | |
2070 | ||
750ce8d1 YQ |
2071 | /* Support for query supported vCont actions. */ |
2072 | PACKET_vContSupported, | |
2073 | ||
de979965 PA |
2074 | /* Support remote CTRL-C. */ |
2075 | PACKET_vCtrlC, | |
2076 | ||
f2faf941 PA |
2077 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2078 | PACKET_no_resumed, | |
2079 | ||
444abaca DJ |
2080 | PACKET_MAX |
2081 | }; | |
506fb367 | 2082 | |
444abaca | 2083 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2084 | |
f7e6eed5 PA |
2085 | /* Returns the packet's corresponding "set remote foo-packet" command |
2086 | state. See struct packet_config for more details. */ | |
2087 | ||
2088 | static enum auto_boolean | |
2089 | packet_set_cmd_state (int packet) | |
2090 | { | |
2091 | return remote_protocol_packets[packet].detect; | |
2092 | } | |
2093 | ||
4082afcc PA |
2094 | /* Returns whether a given packet or feature is supported. This takes |
2095 | into account the state of the corresponding "set remote foo-packet" | |
2096 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2097 | |
4082afcc PA |
2098 | static enum packet_support |
2099 | packet_config_support (struct packet_config *config) | |
2100 | { | |
2101 | switch (config->detect) | |
444abaca | 2102 | { |
4082afcc PA |
2103 | case AUTO_BOOLEAN_TRUE: |
2104 | return PACKET_ENABLE; | |
2105 | case AUTO_BOOLEAN_FALSE: | |
2106 | return PACKET_DISABLE; | |
2107 | case AUTO_BOOLEAN_AUTO: | |
2108 | return config->support; | |
2109 | default: | |
2110 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2111 | } |
4082afcc PA |
2112 | } |
2113 | ||
2114 | /* Same as packet_config_support, but takes the packet's enum value as | |
2115 | argument. */ | |
2116 | ||
2117 | static enum packet_support | |
2118 | packet_support (int packet) | |
2119 | { | |
2120 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2121 | ||
2122 | return packet_config_support (config); | |
dc8acb97 MS |
2123 | } |
2124 | ||
5a2468f5 | 2125 | static void |
444abaca DJ |
2126 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2127 | struct cmd_list_element *c, | |
2128 | const char *value) | |
5a2468f5 | 2129 | { |
444abaca | 2130 | struct packet_config *packet; |
5a2468f5 | 2131 | |
444abaca DJ |
2132 | for (packet = remote_protocol_packets; |
2133 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2134 | packet++) | |
2135 | { | |
2136 | if (&packet->detect == c->var) | |
2137 | { | |
2138 | show_packet_config_cmd (packet); | |
2139 | return; | |
2140 | } | |
2141 | } | |
9b20d036 | 2142 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2143 | c->name); |
5a2468f5 JM |
2144 | } |
2145 | ||
d471ea57 AC |
2146 | /* Should we try one of the 'Z' requests? */ |
2147 | ||
2148 | enum Z_packet_type | |
2149 | { | |
2150 | Z_PACKET_SOFTWARE_BP, | |
2151 | Z_PACKET_HARDWARE_BP, | |
2152 | Z_PACKET_WRITE_WP, | |
2153 | Z_PACKET_READ_WP, | |
2154 | Z_PACKET_ACCESS_WP, | |
2155 | NR_Z_PACKET_TYPES | |
2156 | }; | |
96baa820 | 2157 | |
d471ea57 | 2158 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2159 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2160 | |
7f19b9a2 | 2161 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2162 | |
2163 | static void | |
eb4c3f4a | 2164 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2165 | struct cmd_list_element *c) |
96baa820 | 2166 | { |
d471ea57 | 2167 | int i; |
a744cf53 | 2168 | |
d471ea57 | 2169 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2170 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2171 | } |
2172 | ||
2173 | static void | |
08546159 AC |
2174 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2175 | struct cmd_list_element *c, | |
2176 | const char *value) | |
96baa820 | 2177 | { |
d471ea57 | 2178 | int i; |
a744cf53 | 2179 | |
d471ea57 AC |
2180 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2181 | { | |
444abaca | 2182 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2183 | } |
96baa820 JM |
2184 | } |
2185 | ||
4082afcc PA |
2186 | /* Returns true if the multi-process extensions are in effect. */ |
2187 | ||
2188 | static int | |
2189 | remote_multi_process_p (struct remote_state *rs) | |
2190 | { | |
2191 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2192 | } | |
2193 | ||
de0d863e DB |
2194 | /* Returns true if fork events are supported. */ |
2195 | ||
2196 | static int | |
2197 | remote_fork_event_p (struct remote_state *rs) | |
2198 | { | |
2199 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2200 | } | |
2201 | ||
c269dbdb DB |
2202 | /* Returns true if vfork events are supported. */ |
2203 | ||
2204 | static int | |
2205 | remote_vfork_event_p (struct remote_state *rs) | |
2206 | { | |
2207 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2208 | } | |
2209 | ||
d46addbb DB |
2210 | /* Returns true if exec events are supported. */ |
2211 | ||
2212 | static int | |
2213 | remote_exec_event_p (struct remote_state *rs) | |
2214 | { | |
2215 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2216 | } | |
2217 | ||
cbb8991c DB |
2218 | /* Insert fork catchpoint target routine. If fork events are enabled |
2219 | then return success, nothing more to do. */ | |
2220 | ||
f6ac5f3d PA |
2221 | int |
2222 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2223 | { |
2224 | struct remote_state *rs = get_remote_state (); | |
2225 | ||
2226 | return !remote_fork_event_p (rs); | |
2227 | } | |
2228 | ||
2229 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2230 | return success. */ | |
2231 | ||
f6ac5f3d PA |
2232 | int |
2233 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2234 | { |
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2239 | then return success, nothing more to do. */ | |
2240 | ||
f6ac5f3d PA |
2241 | int |
2242 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2243 | { |
2244 | struct remote_state *rs = get_remote_state (); | |
2245 | ||
2246 | return !remote_vfork_event_p (rs); | |
2247 | } | |
2248 | ||
2249 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2250 | return success. */ | |
2251 | ||
f6ac5f3d PA |
2252 | int |
2253 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2254 | { |
2255 | return 0; | |
2256 | } | |
2257 | ||
d46addbb DB |
2258 | /* Insert exec catchpoint target routine. If exec events are |
2259 | enabled, just return success. */ | |
2260 | ||
f6ac5f3d PA |
2261 | int |
2262 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2263 | { |
2264 | struct remote_state *rs = get_remote_state (); | |
2265 | ||
2266 | return !remote_exec_event_p (rs); | |
2267 | } | |
2268 | ||
2269 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2270 | return success. */ | |
2271 | ||
f6ac5f3d PA |
2272 | int |
2273 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2274 | { |
2275 | return 0; | |
2276 | } | |
2277 | ||
c906108c SS |
2278 | \f |
2279 | ||
79d7f229 PA |
2280 | static ptid_t magic_null_ptid; |
2281 | static ptid_t not_sent_ptid; | |
2282 | static ptid_t any_thread_ptid; | |
2283 | ||
0b16c5cf PA |
2284 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2285 | detach instead of killing it when bailing out). */ | |
2286 | ||
6b8edb51 PA |
2287 | int |
2288 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2289 | { |
2290 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2291 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2292 | |
4082afcc | 2293 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2294 | return 0; |
2295 | ||
2296 | if (remote_multi_process_p (rs)) | |
bba74b36 | 2297 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 2298 | else |
bba74b36 | 2299 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
2300 | |
2301 | putpkt (rs->buf); | |
2302 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2303 | ||
2304 | switch (packet_ok (rs->buf, | |
1554e9be | 2305 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2306 | { |
2307 | case PACKET_OK: | |
2308 | if (strcmp (rs->buf, "1") == 0) | |
2309 | return 1; | |
2310 | break; | |
2311 | case PACKET_ERROR: | |
2312 | warning (_("Remote failure reply: %s"), rs->buf); | |
2313 | break; | |
2314 | case PACKET_UNKNOWN: | |
2315 | break; | |
2316 | } | |
2317 | ||
2318 | return 0; | |
2319 | } | |
2320 | ||
49c62f2e PA |
2321 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2322 | has been invented by GDB, instead of reported by the target. Since | |
2323 | we can be connected to a remote system before before knowing about | |
2324 | any inferior, mark the target with execution when we find the first | |
2325 | inferior. If ATTACHED is 1, then we had just attached to this | |
2326 | inferior. If it is 0, then we just created this inferior. If it | |
2327 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2328 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2329 | attempt to open this inferior's executable as the main executable | |
2330 | if no main executable is open already. */ | |
1941c569 | 2331 | |
6b8edb51 PA |
2332 | inferior * |
2333 | remote_target::remote_add_inferior (int fake_pid_p, int pid, int attached, | |
2334 | int try_open_exec) | |
1941c569 | 2335 | { |
1941c569 PA |
2336 | struct inferior *inf; |
2337 | ||
0b16c5cf PA |
2338 | /* Check whether this process we're learning about is to be |
2339 | considered attached, or if is to be considered to have been | |
2340 | spawned by the stub. */ | |
2341 | if (attached == -1) | |
2342 | attached = remote_query_attached (pid); | |
2343 | ||
f5656ead | 2344 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2345 | { |
2346 | /* If the target shares code across all inferiors, then every | |
2347 | attach adds a new inferior. */ | |
2348 | inf = add_inferior (pid); | |
2349 | ||
2350 | /* ... and every inferior is bound to the same program space. | |
2351 | However, each inferior may still have its own address | |
2352 | space. */ | |
2353 | inf->aspace = maybe_new_address_space (); | |
2354 | inf->pspace = current_program_space; | |
2355 | } | |
2356 | else | |
2357 | { | |
2358 | /* In the traditional debugging scenario, there's a 1-1 match | |
2359 | between program/address spaces. We simply bind the inferior | |
2360 | to the program space's address space. */ | |
2361 | inf = current_inferior (); | |
2362 | inferior_appeared (inf, pid); | |
2363 | } | |
1941c569 | 2364 | |
0b16c5cf | 2365 | inf->attach_flag = attached; |
49c62f2e | 2366 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2367 | |
1b6e6f5c GB |
2368 | /* If no main executable is currently open then attempt to |
2369 | open the file that was executed to create this inferior. */ | |
835205d0 | 2370 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2371 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2372 | |
1941c569 PA |
2373 | return inf; |
2374 | } | |
2375 | ||
7aabaf9d | 2376 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
85ad3aaf | 2377 | |
1941c569 PA |
2378 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2379 | according to RUNNING. */ | |
2380 | ||
6b8edb51 PA |
2381 | void |
2382 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) | |
c906108c | 2383 | { |
b7ea362b | 2384 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2385 | struct thread_info *thread; |
b7ea362b PA |
2386 | |
2387 | /* GDB historically didn't pull threads in the initial connection | |
2388 | setup. If the remote target doesn't even have a concept of | |
2389 | threads (e.g., a bare-metal target), even if internally we | |
2390 | consider that a single-threaded target, mentioning a new thread | |
2391 | might be confusing to the user. Be silent then, preserving the | |
2392 | age old behavior. */ | |
2393 | if (rs->starting_up) | |
85ad3aaf | 2394 | thread = add_thread_silent (ptid); |
b7ea362b | 2395 | else |
85ad3aaf | 2396 | thread = add_thread (ptid); |
1941c569 | 2397 | |
7aabaf9d | 2398 | get_remote_thread_info (thread)->vcont_resumed = executing; |
0d5b594f | 2399 | set_executing (ptid, executing); |
1941c569 PA |
2400 | set_running (ptid, running); |
2401 | } | |
2402 | ||
2403 | /* Come here when we learn about a thread id from the remote target. | |
2404 | It may be the first time we hear about such thread, so take the | |
2405 | opportunity to add it to GDB's thread list. In case this is the | |
2406 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2407 | GDB's inferior list as well. EXECUTING indicates whether the |
2408 | thread is (internally) executing or stopped. */ | |
1941c569 | 2409 | |
6b8edb51 PA |
2410 | void |
2411 | remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) | |
1941c569 | 2412 | { |
0d5b594f PA |
2413 | /* In non-stop mode, we assume new found threads are (externally) |
2414 | running until proven otherwise with a stop reply. In all-stop, | |
2415 | we can only get here if all threads are stopped. */ | |
2416 | int running = target_is_non_stop_p () ? 1 : 0; | |
2417 | ||
c906108c SS |
2418 | /* If this is a new thread, add it to GDB's thread list. |
2419 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
2420 | |
2421 | if (in_thread_list (currthread) && is_exited (currthread)) | |
2422 | { | |
2423 | /* We're seeing an event on a thread id we knew had exited. | |
2424 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2425 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2426 | return; |
2427 | } | |
2428 | ||
79d7f229 | 2429 | if (!in_thread_list (currthread)) |
c0a2216e | 2430 | { |
1941c569 | 2431 | struct inferior *inf = NULL; |
bad34192 | 2432 | int pid = ptid_get_pid (currthread); |
1941c569 | 2433 | |
bad34192 PA |
2434 | if (ptid_is_pid (inferior_ptid) |
2435 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
2436 | { |
2437 | /* inferior_ptid has no thread member yet. This can happen | |
2438 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2439 | stub doesn't support qC. This is the first stop reported | |
2440 | after an attach, so this is the main thread. Update the | |
2441 | ptid in the thread list. */ | |
bad34192 PA |
2442 | if (in_thread_list (pid_to_ptid (pid))) |
2443 | thread_change_ptid (inferior_ptid, currthread); | |
2444 | else | |
2445 | { | |
0d5b594f | 2446 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
2447 | inferior_ptid = currthread; |
2448 | } | |
dc146f7c | 2449 | return; |
c0a2216e | 2450 | } |
82f73884 PA |
2451 | |
2452 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
2453 | { |
2454 | /* inferior_ptid is not set yet. This can happen with the | |
2455 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2456 | doesn't support qC. This is the first stop reported | |
2457 | after an attach, so this is the main thread. Update the | |
2458 | ptid in the thread list. */ | |
dc146f7c | 2459 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 2460 | return; |
c0a2216e | 2461 | } |
82f73884 | 2462 | |
29c87f7f PA |
2463 | /* When connecting to a target remote, or to a target |
2464 | extended-remote which already was debugging an inferior, we | |
2465 | may not know about it yet. Add it before adding its child | |
2466 | thread, so notifications are emitted in a sensible order. */ | |
2467 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
2468 | { |
2469 | struct remote_state *rs = get_remote_state (); | |
2470 | int fake_pid_p = !remote_multi_process_p (rs); | |
2471 | ||
2472 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 2473 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 2474 | } |
29c87f7f | 2475 | |
82f73884 | 2476 | /* This is really a new thread. Add it. */ |
0d5b594f | 2477 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
2478 | |
2479 | /* If we found a new inferior, let the common code do whatever | |
2480 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2481 | breakpoints), unless we're just setting up an all-stop |
2482 | connection. */ | |
1941c569 | 2483 | if (inf != NULL) |
b7ea362b PA |
2484 | { |
2485 | struct remote_state *rs = get_remote_state (); | |
2486 | ||
6efcd9a8 | 2487 | if (!rs->starting_up) |
0d5b594f | 2488 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 2489 | } |
c0a2216e | 2490 | } |
c906108c SS |
2491 | } |
2492 | ||
85ad3aaf | 2493 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2494 | |
7aabaf9d SM |
2495 | static remote_thread_info * |
2496 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2497 | { |
85ad3aaf | 2498 | gdb_assert (thread != NULL); |
dc146f7c | 2499 | |
85ad3aaf | 2500 | if (thread->priv == NULL) |
7aabaf9d | 2501 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2502 | |
7aabaf9d | 2503 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2504 | } |
2505 | ||
2506 | /* Return PTID's private thread data, creating it if necessary. */ | |
2507 | ||
7aabaf9d SM |
2508 | static remote_thread_info * |
2509 | get_remote_thread_info (ptid_t ptid) | |
85ad3aaf PA |
2510 | { |
2511 | struct thread_info *info = find_thread_ptid (ptid); | |
2512 | ||
7aabaf9d | 2513 | return get_remote_thread_info (info); |
dc146f7c VP |
2514 | } |
2515 | ||
74531fed PA |
2516 | /* Call this function as a result of |
2517 | 1) A halt indication (T packet) containing a thread id | |
2518 | 2) A direct query of currthread | |
0df8b418 | 2519 | 3) Successful execution of set thread */ |
74531fed PA |
2520 | |
2521 | static void | |
47f8a51d | 2522 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2523 | { |
47f8a51d | 2524 | rs->general_thread = currthread; |
74531fed PA |
2525 | } |
2526 | ||
89be2091 DJ |
2527 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2528 | it can simply pass through to the inferior without reporting. */ | |
2529 | ||
f6ac5f3d PA |
2530 | void |
2531 | remote_target::pass_signals (int numsigs, unsigned char *pass_signals) | |
89be2091 | 2532 | { |
4082afcc | 2533 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2534 | { |
2535 | char *pass_packet, *p; | |
89be2091 | 2536 | int count = 0, i; |
747dc59d | 2537 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
2538 | |
2539 | gdb_assert (numsigs < 256); | |
2540 | for (i = 0; i < numsigs; i++) | |
2541 | { | |
2455069d | 2542 | if (pass_signals[i]) |
89be2091 DJ |
2543 | count++; |
2544 | } | |
224c3ddb | 2545 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2546 | strcpy (pass_packet, "QPassSignals:"); |
2547 | p = pass_packet + strlen (pass_packet); | |
2548 | for (i = 0; i < numsigs; i++) | |
2549 | { | |
2455069d | 2550 | if (pass_signals[i]) |
89be2091 DJ |
2551 | { |
2552 | if (i >= 16) | |
2553 | *p++ = tohex (i >> 4); | |
2554 | *p++ = tohex (i & 15); | |
2555 | if (count) | |
2556 | *p++ = ';'; | |
2557 | else | |
2558 | break; | |
2559 | count--; | |
2560 | } | |
2561 | } | |
2562 | *p = 0; | |
747dc59d | 2563 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2564 | { |
89be2091 DJ |
2565 | putpkt (pass_packet); |
2566 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2567 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2568 | if (rs->last_pass_packet) |
2569 | xfree (rs->last_pass_packet); | |
2570 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2571 | } |
2572 | else | |
2573 | xfree (pass_packet); | |
2574 | } | |
2575 | } | |
2576 | ||
82075af2 JS |
2577 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2578 | to report syscalls to GDB. */ | |
2579 | ||
f6ac5f3d PA |
2580 | int |
2581 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2582 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2583 | { |
b80406ac | 2584 | const char *catch_packet; |
82075af2 JS |
2585 | enum packet_result result; |
2586 | int n_sysno = 0; | |
2587 | ||
2588 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2589 | { | |
2590 | /* Not supported. */ | |
2591 | return 1; | |
2592 | } | |
2593 | ||
649a140c | 2594 | if (needed && any_count == 0) |
82075af2 | 2595 | { |
649a140c PA |
2596 | /* Count how many syscalls are to be caught. */ |
2597 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2598 | { |
649a140c | 2599 | if (syscall_counts[i] != 0) |
82075af2 JS |
2600 | n_sysno++; |
2601 | } | |
2602 | } | |
2603 | ||
2604 | if (remote_debug) | |
2605 | { | |
2606 | fprintf_unfiltered (gdb_stdlog, | |
2607 | "remote_set_syscall_catchpoint " | |
2608 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2609 | pid, needed, any_count, n_sysno); | |
2610 | } | |
2611 | ||
1b81856f | 2612 | std::string built_packet; |
82075af2 JS |
2613 | if (needed) |
2614 | { | |
2615 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2616 | characters for a sysno. If the resulting packet size is too | |
2617 | big, fallback on the non-selective packet. */ | |
2618 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2619 | built_packet.reserve (maxpktsz); |
2620 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2621 | if (any_count == 0) |
82075af2 | 2622 | { |
649a140c PA |
2623 | /* Add in each syscall to be caught. */ |
2624 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2625 | { |
649a140c PA |
2626 | if (syscall_counts[i] != 0) |
2627 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2628 | } |
2629 | } | |
1b81856f | 2630 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2631 | { |
2632 | /* catch_packet too big. Fallback to less efficient | |
2633 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2634 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2635 | } |
b80406ac | 2636 | else |
1b81856f | 2637 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2638 | } |
2639 | else | |
b80406ac | 2640 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2641 | |
b80406ac | 2642 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2643 | |
b80406ac TT |
2644 | putpkt (catch_packet); |
2645 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2646 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2647 | if (result == PACKET_OK) | |
2648 | return 0; | |
2649 | else | |
2650 | return -1; | |
82075af2 JS |
2651 | } |
2652 | ||
9b224c5e PA |
2653 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2654 | signals it should pass through to the inferior when detaching. */ | |
2655 | ||
f6ac5f3d PA |
2656 | void |
2657 | remote_target::program_signals (int numsigs, unsigned char *signals) | |
9b224c5e | 2658 | { |
4082afcc | 2659 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2660 | { |
2661 | char *packet, *p; | |
2662 | int count = 0, i; | |
5e4a05c4 | 2663 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2664 | |
2665 | gdb_assert (numsigs < 256); | |
2666 | for (i = 0; i < numsigs; i++) | |
2667 | { | |
2668 | if (signals[i]) | |
2669 | count++; | |
2670 | } | |
224c3ddb | 2671 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2672 | strcpy (packet, "QProgramSignals:"); |
2673 | p = packet + strlen (packet); | |
2674 | for (i = 0; i < numsigs; i++) | |
2675 | { | |
2676 | if (signal_pass_state (i)) | |
2677 | { | |
2678 | if (i >= 16) | |
2679 | *p++ = tohex (i >> 4); | |
2680 | *p++ = tohex (i & 15); | |
2681 | if (count) | |
2682 | *p++ = ';'; | |
2683 | else | |
2684 | break; | |
2685 | count--; | |
2686 | } | |
2687 | } | |
2688 | *p = 0; | |
5e4a05c4 TT |
2689 | if (!rs->last_program_signals_packet |
2690 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2691 | { |
9b224c5e PA |
2692 | putpkt (packet); |
2693 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2694 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2695 | xfree (rs->last_program_signals_packet); |
2696 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2697 | } |
2698 | else | |
2699 | xfree (packet); | |
2700 | } | |
2701 | } | |
2702 | ||
79d7f229 PA |
2703 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2704 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2705 | thread. If GEN is set, set the general thread, if not, then set | |
2706 | the step/continue thread. */ | |
6b8edb51 PA |
2707 | void |
2708 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2709 | { |
d01949b6 | 2710 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2711 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2712 | char *buf = rs->buf; |
79d7f229 | 2713 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2714 | |
79d7f229 | 2715 | if (ptid_equal (state, ptid)) |
c906108c SS |
2716 | return; |
2717 | ||
79d7f229 PA |
2718 | *buf++ = 'H'; |
2719 | *buf++ = gen ? 'g' : 'c'; | |
2720 | if (ptid_equal (ptid, magic_null_ptid)) | |
2721 | xsnprintf (buf, endbuf - buf, "0"); | |
2722 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2723 | xsnprintf (buf, endbuf - buf, "0"); | |
2724 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2725 | xsnprintf (buf, endbuf - buf, "-1"); | |
2726 | else | |
82f73884 | 2727 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2728 | putpkt (rs->buf); |
6d820c5c | 2729 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2730 | if (gen) |
47f8a51d | 2731 | rs->general_thread = ptid; |
c906108c | 2732 | else |
47f8a51d | 2733 | rs->continue_thread = ptid; |
c906108c | 2734 | } |
79d7f229 | 2735 | |
6b8edb51 PA |
2736 | void |
2737 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2738 | { |
2739 | set_thread (ptid, 1); | |
2740 | } | |
2741 | ||
6b8edb51 PA |
2742 | void |
2743 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2744 | { |
2745 | set_thread (ptid, 0); | |
2746 | } | |
2747 | ||
3c9c4b83 PA |
2748 | /* Change the remote current process. Which thread within the process |
2749 | ends up selected isn't important, as long as it is the same process | |
2750 | as what INFERIOR_PTID points to. | |
2751 | ||
2752 | This comes from that fact that there is no explicit notion of | |
2753 | "selected process" in the protocol. The selected process for | |
2754 | general operations is the process the selected general thread | |
2755 | belongs to. */ | |
2756 | ||
6b8edb51 PA |
2757 | void |
2758 | remote_target::set_general_process () | |
3c9c4b83 PA |
2759 | { |
2760 | struct remote_state *rs = get_remote_state (); | |
2761 | ||
2762 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2763 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2764 | return; |
2765 | ||
2766 | /* We only need to change the remote current thread if it's pointing | |
2767 | at some other process. */ | |
47f8a51d | 2768 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2769 | set_general_thread (inferior_ptid); |
2770 | } | |
2771 | ||
c906108c | 2772 | \f |
7d1a114c PA |
2773 | /* Return nonzero if this is the main thread that we made up ourselves |
2774 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2775 | |
2776 | static int | |
f6ac5f3d | 2777 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2778 | { |
c0a2216e PA |
2779 | if (ptid_equal (ptid, magic_null_ptid)) |
2780 | /* The main thread is always alive. */ | |
2781 | return 1; | |
2782 | ||
ba348170 | 2783 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2784 | /* The main thread is always alive. This can happen after a |
2785 | vAttach, if the remote side doesn't support | |
2786 | multi-threading. */ | |
2787 | return 1; | |
2788 | ||
7d1a114c PA |
2789 | return 0; |
2790 | } | |
2791 | ||
2792 | /* Return nonzero if the thread PTID is still alive on the remote | |
2793 | system. */ | |
2794 | ||
57810aa7 | 2795 | bool |
f6ac5f3d | 2796 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2797 | { |
2798 | struct remote_state *rs = get_remote_state (); | |
2799 | char *p, *endp; | |
2800 | ||
2801 | /* Check if this is a thread that we made up ourselves to model | |
2802 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2803 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2804 | return 1; |
2805 | ||
82f73884 PA |
2806 | p = rs->buf; |
2807 | endp = rs->buf + get_remote_packet_size (); | |
2808 | ||
2809 | *p++ = 'T'; | |
2810 | write_ptid (p, endp, ptid); | |
2811 | ||
2e9f7625 | 2812 | putpkt (rs->buf); |
6d820c5c | 2813 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2814 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2815 | } |
2816 | ||
79efa585 SM |
2817 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2818 | The thread_info object owns the memory for the name. */ | |
2819 | ||
f6ac5f3d PA |
2820 | const char * |
2821 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2822 | { |
2823 | if (info->priv != NULL) | |
a9334058 SM |
2824 | { |
2825 | const std::string &name = get_remote_thread_info (info)->name; | |
2826 | return !name.empty () ? name.c_str () : NULL; | |
2827 | } | |
79efa585 SM |
2828 | |
2829 | return NULL; | |
2830 | } | |
2831 | ||
c906108c SS |
2832 | /* About these extended threadlist and threadinfo packets. They are |
2833 | variable length packets but, the fields within them are often fixed | |
2834 | length. They are redundent enough to send over UDP as is the | |
2835 | remote protocol in general. There is a matching unit test module | |
2836 | in libstub. */ | |
2837 | ||
23860348 | 2838 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2839 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2840 | changable. */ |
cce74817 JM |
2841 | |
2842 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2843 | Plan to fix this. */ |
cce74817 | 2844 | |
23860348 | 2845 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2846 | |
9d1f7ab2 | 2847 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2848 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2849 | |
2850 | struct gdb_ext_thread_info | |
c5aa993b | 2851 | { |
23860348 | 2852 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2853 | int active; /* Has state interesting to GDB? |
23860348 | 2854 | regs, stack. */ |
2bc416ba | 2855 | char display[256]; /* Brief state display, name, |
cedea757 | 2856 | blocked/suspended. */ |
23860348 | 2857 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2858 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2859 | whatever. */ |
c5aa993b | 2860 | }; |
cce74817 JM |
2861 | |
2862 | /* The volume of remote transfers can be limited by submitting | |
2863 | a mask containing bits specifying the desired information. | |
2864 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2865 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2866 | |
2867 | #define TAG_THREADID 1 | |
2868 | #define TAG_EXISTS 2 | |
2869 | #define TAG_DISPLAY 4 | |
2870 | #define TAG_THREADNAME 8 | |
c5aa993b | 2871 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2872 | |
23860348 | 2873 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2874 | |
a14ed312 | 2875 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2876 | |
a14ed312 | 2877 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2878 | |
a14ed312 | 2879 | static char *pack_int (char *buf, int value); |
cce74817 | 2880 | |
a14ed312 | 2881 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2882 | |
a14ed312 | 2883 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2884 | |
23860348 | 2885 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2886 | |
23860348 | 2887 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2888 | |
23860348 | 2889 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2890 | |
23860348 | 2891 | static int threadref_to_int (threadref *ref); |
cce74817 | 2892 | |
23860348 | 2893 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2894 | |
23860348 | 2895 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2896 | |
2bc416ba | 2897 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2898 | threadref *id); |
cce74817 | 2899 | |
a14ed312 KB |
2900 | static char *pack_threadlist_request (char *pkt, int startflag, |
2901 | int threadcount, | |
23860348 | 2902 | threadref *nextthread); |
cce74817 | 2903 | |
23860348 | 2904 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2905 | |
82f73884 PA |
2906 | |
2907 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2908 | buffer we're allowed to write to. Returns | |
2909 | BUF+CHARACTERS_WRITTEN. */ | |
2910 | ||
6b8edb51 PA |
2911 | char * |
2912 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
2913 | { |
2914 | int pid, tid; | |
2915 | struct remote_state *rs = get_remote_state (); | |
2916 | ||
2917 | if (remote_multi_process_p (rs)) | |
2918 | { | |
2919 | pid = ptid_get_pid (ptid); | |
2920 | if (pid < 0) | |
2921 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2922 | else | |
2923 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2924 | } | |
ba348170 | 2925 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2926 | if (tid < 0) |
2927 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2928 | else | |
2929 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2930 | ||
2931 | return buf; | |
2932 | } | |
2933 | ||
256642e8 PA |
2934 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2935 | last parsed char. Returns null_ptid if no thread id is found, and | |
2936 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2937 | |
2938 | static ptid_t | |
256642e8 | 2939 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2940 | { |
256642e8 PA |
2941 | const char *p = buf; |
2942 | const char *pp; | |
82f73884 | 2943 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2944 | |
2945 | if (*p == 'p') | |
2946 | { | |
2947 | /* Multi-process ptid. */ | |
2948 | pp = unpack_varlen_hex (p + 1, &pid); | |
2949 | if (*pp != '.') | |
b37520b6 | 2950 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2951 | |
2952 | p = pp; | |
2953 | pp = unpack_varlen_hex (p + 1, &tid); | |
2954 | if (obuf) | |
2955 | *obuf = pp; | |
ba348170 | 2956 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2957 | } |
2958 | ||
2959 | /* No multi-process. Just a tid. */ | |
2960 | pp = unpack_varlen_hex (p, &tid); | |
2961 | ||
c9f35b34 KB |
2962 | /* Return null_ptid when no thread id is found. */ |
2963 | if (p == pp) | |
2964 | { | |
2965 | if (obuf) | |
2966 | *obuf = pp; | |
2967 | return null_ptid; | |
2968 | } | |
2969 | ||
82f73884 | 2970 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2971 | what's in inferior_ptid, unless it's null at this point. If so, |
2972 | then since there's no way to know the pid of the reported | |
2973 | threads, use the magic number. */ | |
2974 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2975 | pid = ptid_get_pid (magic_null_ptid); | |
2976 | else | |
2977 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2978 | |
2979 | if (obuf) | |
2980 | *obuf = pp; | |
ba348170 | 2981 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2982 | } |
2983 | ||
c906108c | 2984 | static int |
fba45db2 | 2985 | stubhex (int ch) |
c906108c SS |
2986 | { |
2987 | if (ch >= 'a' && ch <= 'f') | |
2988 | return ch - 'a' + 10; | |
2989 | if (ch >= '0' && ch <= '9') | |
2990 | return ch - '0'; | |
2991 | if (ch >= 'A' && ch <= 'F') | |
2992 | return ch - 'A' + 10; | |
2993 | return -1; | |
2994 | } | |
2995 | ||
2996 | static int | |
fba45db2 | 2997 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2998 | { |
2999 | int nibble; | |
3000 | int retval = 0; | |
3001 | ||
3002 | while (fieldlength) | |
3003 | { | |
3004 | nibble = stubhex (*buff++); | |
3005 | retval |= nibble; | |
3006 | fieldlength--; | |
3007 | if (fieldlength) | |
3008 | retval = retval << 4; | |
3009 | } | |
3010 | return retval; | |
3011 | } | |
3012 | ||
c906108c | 3013 | static char * |
fba45db2 | 3014 | unpack_nibble (char *buf, int *val) |
c906108c | 3015 | { |
b7589f7d | 3016 | *val = fromhex (*buf++); |
c906108c SS |
3017 | return buf; |
3018 | } | |
3019 | ||
c906108c | 3020 | static char * |
fba45db2 | 3021 | unpack_byte (char *buf, int *value) |
c906108c SS |
3022 | { |
3023 | *value = stub_unpack_int (buf, 2); | |
3024 | return buf + 2; | |
3025 | } | |
3026 | ||
3027 | static char * | |
fba45db2 | 3028 | pack_int (char *buf, int value) |
c906108c SS |
3029 | { |
3030 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3031 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3032 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3033 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3034 | return buf; | |
3035 | } | |
3036 | ||
3037 | static char * | |
fba45db2 | 3038 | unpack_int (char *buf, int *value) |
c906108c SS |
3039 | { |
3040 | *value = stub_unpack_int (buf, 8); | |
3041 | return buf + 8; | |
3042 | } | |
3043 | ||
23860348 | 3044 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3045 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3046 | |
3047 | static char * | |
fba45db2 | 3048 | pack_string (char *pkt, char *string) |
c906108c SS |
3049 | { |
3050 | char ch; | |
3051 | int len; | |
3052 | ||
3053 | len = strlen (string); | |
3054 | if (len > 200) | |
23860348 | 3055 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3056 | pkt = pack_hex_byte (pkt, len); |
3057 | while (len-- > 0) | |
3058 | { | |
3059 | ch = *string++; | |
3060 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3061 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3062 | *pkt++ = ch; |
3063 | } | |
3064 | return pkt; | |
3065 | } | |
3066 | #endif /* 0 (unused) */ | |
3067 | ||
3068 | static char * | |
fba45db2 | 3069 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
3070 | { |
3071 | while (length--) | |
3072 | *dest++ = *src++; | |
3073 | *dest = '\0'; | |
3074 | return src; | |
3075 | } | |
3076 | ||
3077 | static char * | |
fba45db2 | 3078 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3079 | { |
3080 | char *limit; | |
3081 | unsigned char *altid; | |
3082 | ||
3083 | altid = (unsigned char *) id; | |
3084 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3085 | while (pkt < limit) | |
3086 | pkt = pack_hex_byte (pkt, *altid++); | |
3087 | return pkt; | |
3088 | } | |
3089 | ||
3090 | ||
3091 | static char * | |
fba45db2 | 3092 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
3093 | { |
3094 | char *altref; | |
3095 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
3096 | int x, y; | |
3097 | ||
3098 | altref = (char *) id; | |
3099 | ||
3100 | while (inbuf < limit) | |
3101 | { | |
3102 | x = stubhex (*inbuf++); | |
3103 | y = stubhex (*inbuf++); | |
3104 | *altref++ = (x << 4) | y; | |
3105 | } | |
3106 | return inbuf; | |
3107 | } | |
3108 | ||
3109 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3110 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3111 | to use 64bit thread references internally. This is an adapter |
3112 | function. */ | |
3113 | ||
3114 | void | |
fba45db2 | 3115 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3116 | { |
3117 | unsigned char *scan; | |
3118 | ||
3119 | scan = (unsigned char *) id; | |
3120 | { | |
3121 | int i = 4; | |
3122 | while (i--) | |
3123 | *scan++ = 0; | |
3124 | } | |
3125 | *scan++ = (value >> 24) & 0xff; | |
3126 | *scan++ = (value >> 16) & 0xff; | |
3127 | *scan++ = (value >> 8) & 0xff; | |
3128 | *scan++ = (value & 0xff); | |
3129 | } | |
3130 | ||
3131 | static int | |
fba45db2 | 3132 | threadref_to_int (threadref *ref) |
c906108c SS |
3133 | { |
3134 | int i, value = 0; | |
3135 | unsigned char *scan; | |
3136 | ||
cfd77fa1 | 3137 | scan = *ref; |
c906108c SS |
3138 | scan += 4; |
3139 | i = 4; | |
3140 | while (i-- > 0) | |
3141 | value = (value << 8) | ((*scan++) & 0xff); | |
3142 | return value; | |
3143 | } | |
3144 | ||
3145 | static void | |
fba45db2 | 3146 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3147 | { |
3148 | int i; | |
3149 | unsigned char *csrc, *cdest; | |
3150 | ||
3151 | csrc = (unsigned char *) src; | |
3152 | cdest = (unsigned char *) dest; | |
3153 | i = 8; | |
3154 | while (i--) | |
3155 | *cdest++ = *csrc++; | |
3156 | } | |
3157 | ||
3158 | static int | |
fba45db2 | 3159 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3160 | { |
23860348 | 3161 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3162 | #if 0 |
3163 | unsigned char *srcp, *destp; | |
3164 | int i, result; | |
3165 | srcp = (char *) src; | |
3166 | destp = (char *) dest; | |
3167 | ||
3168 | result = 1; | |
3169 | while (i-- > 0) | |
3170 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3171 | return result; | |
3172 | #endif | |
3173 | return 1; | |
3174 | } | |
3175 | ||
3176 | /* | |
c5aa993b JM |
3177 | threadid:1, # always request threadid |
3178 | context_exists:2, | |
3179 | display:4, | |
3180 | unique_name:8, | |
3181 | more_display:16 | |
3182 | */ | |
c906108c SS |
3183 | |
3184 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3185 | ||
3186 | static char * | |
fba45db2 | 3187 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3188 | { |
23860348 MS |
3189 | *pkt++ = 'q'; /* Info Query */ |
3190 | *pkt++ = 'P'; /* process or thread info */ | |
3191 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3192 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3193 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3194 | return pkt; |
3195 | } | |
3196 | ||
23860348 | 3197 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3198 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3199 | add more fields as time goes by. */ |
c906108c | 3200 | |
23860348 | 3201 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3202 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3203 | fetch registers and its stack? */ |
c5aa993b | 3204 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3205 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3206 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3207 | the process. */ |
c906108c | 3208 | |
6b8edb51 PA |
3209 | int |
3210 | remote_target::remote_unpack_thread_info_response (char *pkt, | |
3211 | threadref *expectedref, | |
3212 | gdb_ext_thread_info *info) | |
c906108c | 3213 | { |
d01949b6 | 3214 | struct remote_state *rs = get_remote_state (); |
c906108c | 3215 | int mask, length; |
cfd77fa1 | 3216 | int tag; |
c906108c | 3217 | threadref ref; |
6d820c5c | 3218 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
3219 | int retval = 1; |
3220 | ||
23860348 | 3221 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3222 | info->active = 0; |
3223 | info->display[0] = '\0'; | |
3224 | info->shortname[0] = '\0'; | |
3225 | info->more_display[0] = '\0'; | |
3226 | ||
23860348 MS |
3227 | /* Assume the characters indicating the packet type have been |
3228 | stripped. */ | |
c906108c SS |
3229 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3230 | pkt = unpack_threadid (pkt, &ref); | |
3231 | ||
3232 | if (mask == 0) | |
8a3fe4f8 | 3233 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3234 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3235 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3236 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3237 | return 0; |
3238 | } | |
3239 | copy_threadref (&info->threadid, &ref); | |
3240 | ||
23860348 | 3241 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 3242 | |
23860348 MS |
3243 | /* Packets are terminated with nulls. */ |
3244 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3245 | { |
3246 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3247 | pkt = unpack_byte (pkt, &length); /* length */ |
3248 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3249 | { |
8a3fe4f8 | 3250 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3251 | retval = 0; |
3252 | break; | |
3253 | } | |
3254 | if (tag == TAG_THREADID) | |
3255 | { | |
3256 | if (length != 16) | |
3257 | { | |
8a3fe4f8 | 3258 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3259 | retval = 0; |
3260 | break; | |
3261 | } | |
3262 | pkt = unpack_threadid (pkt, &ref); | |
3263 | mask = mask & ~TAG_THREADID; | |
3264 | continue; | |
3265 | } | |
3266 | if (tag == TAG_EXISTS) | |
3267 | { | |
3268 | info->active = stub_unpack_int (pkt, length); | |
3269 | pkt += length; | |
3270 | mask = mask & ~(TAG_EXISTS); | |
3271 | if (length > 8) | |
3272 | { | |
8a3fe4f8 | 3273 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3274 | retval = 0; |
3275 | break; | |
3276 | } | |
3277 | continue; | |
3278 | } | |
3279 | if (tag == TAG_THREADNAME) | |
3280 | { | |
3281 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3282 | mask = mask & ~TAG_THREADNAME; | |
3283 | continue; | |
3284 | } | |
3285 | if (tag == TAG_DISPLAY) | |
3286 | { | |
3287 | pkt = unpack_string (pkt, &info->display[0], length); | |
3288 | mask = mask & ~TAG_DISPLAY; | |
3289 | continue; | |
3290 | } | |
3291 | if (tag == TAG_MOREDISPLAY) | |
3292 | { | |
3293 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3294 | mask = mask & ~TAG_MOREDISPLAY; | |
3295 | continue; | |
3296 | } | |
8a3fe4f8 | 3297 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3298 | break; /* Not a tag we know about. */ |
c906108c SS |
3299 | } |
3300 | return retval; | |
3301 | } | |
3302 | ||
6b8edb51 PA |
3303 | int |
3304 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3305 | int fieldset, | |
3306 | gdb_ext_thread_info *info) | |
c906108c | 3307 | { |
d01949b6 | 3308 | struct remote_state *rs = get_remote_state (); |
c906108c | 3309 | int result; |
c906108c | 3310 | |
2e9f7625 DJ |
3311 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
3312 | putpkt (rs->buf); | |
6d820c5c | 3313 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
3314 | |
3315 | if (rs->buf[0] == '\0') | |
3316 | return 0; | |
3317 | ||
2e9f7625 | 3318 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 3319 | threadid, info); |
c906108c SS |
3320 | return result; |
3321 | } | |
3322 | ||
c906108c SS |
3323 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3324 | ||
3325 | static char * | |
fba45db2 KB |
3326 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3327 | threadref *nextthread) | |
c906108c SS |
3328 | { |
3329 | *pkt++ = 'q'; /* info query packet */ | |
3330 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3331 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3332 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3333 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3334 | *pkt = '\0'; | |
3335 | return pkt; | |
3336 | } | |
3337 | ||
3338 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3339 | ||
6b8edb51 PA |
3340 | int |
3341 | remote_target::parse_threadlist_response (char *pkt, int result_limit, | |
3342 | threadref *original_echo, | |
3343 | threadref *resultlist, | |
3344 | int *doneflag) | |
c906108c | 3345 | { |
d01949b6 | 3346 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3347 | char *limit; |
3348 | int count, resultcount, done; | |
3349 | ||
3350 | resultcount = 0; | |
3351 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 3352 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 3353 | /* done parse past here */ |
c906108c SS |
3354 | pkt = unpack_byte (pkt, &count); /* count field */ |
3355 | pkt = unpack_nibble (pkt, &done); | |
3356 | /* The first threadid is the argument threadid. */ | |
3357 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3358 | while ((count-- > 0) && (pkt < limit)) | |
3359 | { | |
3360 | pkt = unpack_threadid (pkt, resultlist++); | |
3361 | if (resultcount++ >= result_limit) | |
3362 | break; | |
3363 | } | |
3364 | if (doneflag) | |
3365 | *doneflag = done; | |
3366 | return resultcount; | |
3367 | } | |
3368 | ||
6dc54d91 PA |
3369 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3370 | qL packet is not supported, 0 on error and 1 on success. */ | |
3371 | ||
6b8edb51 PA |
3372 | int |
3373 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3374 | int result_limit, int *done, int *result_count, | |
3375 | threadref *threadlist) | |
c906108c | 3376 | { |
d01949b6 | 3377 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3378 | int result = 1; |
3379 | ||
23860348 | 3380 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3381 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3382 | >= get_remote_packet_size ()) | |
ea9c271d | 3383 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3384 | |
6d820c5c DJ |
3385 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
3386 | putpkt (rs->buf); | |
3387 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 3388 | if (*rs->buf == '\0') |
6dc54d91 PA |
3389 | { |
3390 | /* Packet not supported. */ | |
3391 | return -1; | |
3392 | } | |
3393 | ||
3394 | *result_count = | |
3395 | parse_threadlist_response (rs->buf + 2, result_limit, | |
3396 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 3397 | |
0d031856 | 3398 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3399 | { |
23860348 MS |
3400 | /* FIXME: This is a good reason to drop the packet. */ |
3401 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
3402 | /* Possabilities : |
3403 | retransmit immediatly - race conditions | |
3404 | retransmit after timeout - yes | |
3405 | exit | |
3406 | wait for packet, then exit | |
3407 | */ | |
8a3fe4f8 | 3408 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3409 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3410 | } |
3411 | if (*result_count <= 0) | |
3412 | { | |
3413 | if (*done != 1) | |
3414 | { | |
8a3fe4f8 | 3415 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3416 | result = 0; |
3417 | } | |
3418 | return result; /* break; */ | |
3419 | } | |
3420 | if (*result_count > result_limit) | |
3421 | { | |
3422 | *result_count = 0; | |
8a3fe4f8 | 3423 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3424 | return 0; |
3425 | } | |
3426 | return result; | |
3427 | } | |
3428 | ||
6dc54d91 PA |
3429 | /* Fetch the list of remote threads, with the qL packet, and call |
3430 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3431 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3432 | STEPFUNCTION returns false. If the packet is not supported, | |
3433 | returns -1. */ | |
c906108c | 3434 | |
6b8edb51 PA |
3435 | int |
3436 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3437 | void *context, int looplimit) | |
c906108c | 3438 | { |
0d031856 | 3439 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3440 | int done, i, result_count; |
3441 | int startflag = 1; | |
3442 | int result = 1; | |
3443 | int loopcount = 0; | |
c906108c SS |
3444 | |
3445 | done = 0; | |
3446 | while (!done) | |
3447 | { | |
3448 | if (loopcount++ > looplimit) | |
3449 | { | |
3450 | result = 0; | |
8a3fe4f8 | 3451 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3452 | break; |
3453 | } | |
6dc54d91 PA |
3454 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3455 | MAXTHREADLISTRESULTS, | |
3456 | &done, &result_count, | |
3457 | rs->resultthreadlist); | |
3458 | if (result <= 0) | |
3459 | break; | |
23860348 | 3460 | /* Clear for later iterations. */ |
c906108c SS |
3461 | startflag = 0; |
3462 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3463 | if (result_count >= 1) | |
0d031856 TT |
3464 | copy_threadref (&rs->nextthread, |
3465 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3466 | i = 0; |
3467 | while (result_count--) | |
6dc54d91 PA |
3468 | { |
3469 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3470 | { | |
3471 | result = 0; | |
3472 | break; | |
3473 | } | |
3474 | } | |
c906108c SS |
3475 | } |
3476 | return result; | |
3477 | } | |
3478 | ||
6dc54d91 PA |
3479 | /* A thread found on the remote target. */ |
3480 | ||
21fe1c75 | 3481 | struct thread_item |
6dc54d91 | 3482 | { |
21fe1c75 SM |
3483 | explicit thread_item (ptid_t ptid_) |
3484 | : ptid (ptid_) | |
3485 | {} | |
3486 | ||
3487 | thread_item (thread_item &&other) = default; | |
3488 | thread_item &operator= (thread_item &&other) = default; | |
3489 | ||
3490 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3491 | ||
6dc54d91 PA |
3492 | /* The thread's PTID. */ |
3493 | ptid_t ptid; | |
3494 | ||
21fe1c75 SM |
3495 | /* The thread's extra info. */ |
3496 | std::string extra; | |
6dc54d91 | 3497 | |
21fe1c75 SM |
3498 | /* The thread's name. */ |
3499 | std::string name; | |
79efa585 | 3500 | |
6dc54d91 | 3501 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3502 | int core = -1; |
f6327dcb KB |
3503 | |
3504 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3505 | gdb::byte_vector thread_handle; |
21fe1c75 | 3506 | }; |
6dc54d91 PA |
3507 | |
3508 | /* Context passed around to the various methods listing remote | |
3509 | threads. As new threads are found, they're added to the ITEMS | |
3510 | vector. */ | |
3511 | ||
3512 | struct threads_listing_context | |
3513 | { | |
21fe1c75 SM |
3514 | /* Return true if this object contains an entry for a thread with ptid |
3515 | PTID. */ | |
6dc54d91 | 3516 | |
21fe1c75 SM |
3517 | bool contains_thread (ptid_t ptid) const |
3518 | { | |
3519 | auto match_ptid = [&] (const thread_item &item) | |
3520 | { | |
3521 | return item.ptid == ptid; | |
3522 | }; | |
80134cf5 | 3523 | |
21fe1c75 SM |
3524 | auto it = std::find_if (this->items.begin (), |
3525 | this->items.end (), | |
3526 | match_ptid); | |
80134cf5 | 3527 | |
21fe1c75 SM |
3528 | return it != this->items.end (); |
3529 | } | |
80134cf5 | 3530 | |
21fe1c75 | 3531 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3532 | |
21fe1c75 SM |
3533 | void remove_thread (ptid_t ptid) |
3534 | { | |
3535 | auto match_ptid = [&] (const thread_item &item) | |
3536 | { | |
3537 | return item.ptid == ptid; | |
3538 | }; | |
cbb8991c | 3539 | |
21fe1c75 SM |
3540 | auto it = std::remove_if (this->items.begin (), |
3541 | this->items.end (), | |
3542 | match_ptid); | |
cbb8991c | 3543 | |
21fe1c75 SM |
3544 | if (it != this->items.end ()) |
3545 | this->items.erase (it); | |
3546 | } | |
3547 | ||
3548 | /* The threads found on the remote target. */ | |
3549 | std::vector<thread_item> items; | |
3550 | }; | |
cbb8991c | 3551 | |
c906108c | 3552 | static int |
6dc54d91 | 3553 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3554 | { |
19ba03f4 SM |
3555 | struct threads_listing_context *context |
3556 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3557 | int pid = inferior_ptid.pid (); |
3558 | int lwp = threadref_to_int (ref); | |
3559 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3560 | |
21fe1c75 | 3561 | context->items.emplace_back (ptid); |
6dc54d91 | 3562 | |
c906108c SS |
3563 | return 1; /* continue iterator */ |
3564 | } | |
3565 | ||
3566 | #define CRAZY_MAX_THREADS 1000 | |
3567 | ||
6b8edb51 PA |
3568 | ptid_t |
3569 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3570 | { |
d01949b6 | 3571 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3572 | |
3573 | putpkt ("qC"); | |
6d820c5c | 3574 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3575 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3576 | { |
256642e8 | 3577 | const char *obuf; |
c9f35b34 KB |
3578 | ptid_t result; |
3579 | ||
3580 | result = read_ptid (&rs->buf[2], &obuf); | |
3581 | if (*obuf != '\0' && remote_debug) | |
3582 | fprintf_unfiltered (gdb_stdlog, | |
3583 | "warning: garbage in qC reply\n"); | |
3584 | ||
3585 | return result; | |
3586 | } | |
c906108c SS |
3587 | else |
3588 | return oldpid; | |
3589 | } | |
3590 | ||
6dc54d91 | 3591 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3592 | |
6b8edb51 PA |
3593 | int |
3594 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3595 | { |
6dc54d91 PA |
3596 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3597 | CRAZY_MAX_THREADS) >= 0) | |
3598 | return 1; | |
3599 | ||
3600 | return 0; | |
c906108c SS |
3601 | } |
3602 | ||
dc146f7c VP |
3603 | #if defined(HAVE_LIBEXPAT) |
3604 | ||
dc146f7c VP |
3605 | static void |
3606 | start_thread (struct gdb_xml_parser *parser, | |
3607 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3608 | void *user_data, |
3609 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3610 | { |
19ba03f4 SM |
3611 | struct threads_listing_context *data |
3612 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3613 | struct gdb_xml_value *attr; |
dc146f7c | 3614 | |
4d0fdd9b | 3615 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3616 | ptid_t ptid = read_ptid (id, NULL); |
3617 | ||
3618 | data->items.emplace_back (ptid); | |
3619 | thread_item &item = data->items.back (); | |
dc146f7c | 3620 | |
3d2c1d41 PA |
3621 | attr = xml_find_attribute (attributes, "core"); |
3622 | if (attr != NULL) | |
4d0fdd9b | 3623 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3624 | |
79efa585 | 3625 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3626 | if (attr != NULL) |
4d0fdd9b | 3627 | item.name = (const char *) attr->value.get (); |
79efa585 | 3628 | |
f6327dcb KB |
3629 | attr = xml_find_attribute (attributes, "handle"); |
3630 | if (attr != NULL) | |
4d0fdd9b | 3631 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3632 | } |
3633 | ||
3634 | static void | |
3635 | end_thread (struct gdb_xml_parser *parser, | |
3636 | const struct gdb_xml_element *element, | |
3637 | void *user_data, const char *body_text) | |
3638 | { | |
19ba03f4 SM |
3639 | struct threads_listing_context *data |
3640 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3641 | |
21fe1c75 SM |
3642 | if (body_text != NULL && *body_text != '\0') |
3643 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3644 | } |
3645 | ||
3646 | const struct gdb_xml_attribute thread_attributes[] = { | |
3647 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3648 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3649 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3650 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3651 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3652 | }; | |
3653 | ||
3654 | const struct gdb_xml_element thread_children[] = { | |
3655 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3656 | }; | |
3657 | ||
3658 | const struct gdb_xml_element threads_children[] = { | |
3659 | { "thread", thread_attributes, thread_children, | |
3660 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3661 | start_thread, end_thread }, | |
3662 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3663 | }; | |
3664 | ||
3665 | const struct gdb_xml_element threads_elements[] = { | |
3666 | { "threads", NULL, threads_children, | |
3667 | GDB_XML_EF_NONE, NULL, NULL }, | |
3668 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3669 | }; | |
3670 | ||
3671 | #endif | |
3672 | ||
6dc54d91 | 3673 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3674 | |
6b8edb51 PA |
3675 | int |
3676 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3677 | { |
dc146f7c | 3678 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3679 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3680 | { |
9018be22 | 3681 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3682 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3683 | |
9018be22 | 3684 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3685 | { |
6dc54d91 | 3686 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3687 | threads_elements, xml->data (), context); |
dc146f7c VP |
3688 | } |
3689 | ||
6dc54d91 | 3690 | return 1; |
dc146f7c VP |
3691 | } |
3692 | #endif | |
3693 | ||
6dc54d91 PA |
3694 | return 0; |
3695 | } | |
3696 | ||
3697 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3698 | ||
6b8edb51 PA |
3699 | int |
3700 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3701 | { |
3702 | struct remote_state *rs = get_remote_state (); | |
3703 | ||
b80fafe3 | 3704 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3705 | { |
256642e8 | 3706 | const char *bufp; |
6dc54d91 | 3707 | |
9d1f7ab2 | 3708 | putpkt ("qfThreadInfo"); |
6d820c5c | 3709 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3710 | bufp = rs->buf; |
9d1f7ab2 | 3711 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3712 | { |
9d1f7ab2 MS |
3713 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3714 | { | |
3715 | do | |
3716 | { | |
21fe1c75 SM |
3717 | ptid_t ptid = read_ptid (bufp, &bufp); |
3718 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3719 | } |
3720 | while (*bufp++ == ','); /* comma-separated list */ | |
3721 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3722 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3723 | bufp = rs->buf; |
9d1f7ab2 | 3724 | } |
6dc54d91 PA |
3725 | return 1; |
3726 | } | |
3727 | else | |
3728 | { | |
3729 | /* Packet not recognized. */ | |
3730 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3731 | } |
3732 | } | |
3733 | ||
6dc54d91 PA |
3734 | return 0; |
3735 | } | |
3736 | ||
e8032dde | 3737 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3738 | targets. */ |
3739 | ||
f6ac5f3d PA |
3740 | void |
3741 | remote_target::update_thread_list () | |
6dc54d91 | 3742 | { |
6dc54d91 | 3743 | struct threads_listing_context context; |
ab970af1 | 3744 | int got_list = 0; |
e8032dde | 3745 | |
6dc54d91 PA |
3746 | /* We have a few different mechanisms to fetch the thread list. Try |
3747 | them all, starting with the most preferred one first, falling | |
3748 | back to older methods. */ | |
6b8edb51 PA |
3749 | if (remote_get_threads_with_qxfer (&context) |
3750 | || remote_get_threads_with_qthreadinfo (&context) | |
3751 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3752 | { |
ab970af1 PA |
3753 | struct thread_info *tp, *tmp; |
3754 | ||
3755 | got_list = 1; | |
3756 | ||
21fe1c75 | 3757 | if (context.items.empty () |
f6ac5f3d | 3758 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3759 | { |
3760 | /* Some targets don't really support threads, but still | |
3761 | reply an (empty) thread list in response to the thread | |
3762 | listing packets, instead of replying "packet not | |
3763 | supported". Exit early so we don't delete the main | |
3764 | thread. */ | |
7d1a114c PA |
3765 | return; |
3766 | } | |
3767 | ||
ab970af1 PA |
3768 | /* CONTEXT now holds the current thread list on the remote |
3769 | target end. Delete GDB-side threads no longer found on the | |
3770 | target. */ | |
8a06aea7 | 3771 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3772 | { |
21fe1c75 | 3773 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3774 | { |
3775 | /* Not found. */ | |
3776 | delete_thread (tp->ptid); | |
3777 | } | |
cbb8991c DB |
3778 | } |
3779 | ||
3780 | /* Remove any unreported fork child threads from CONTEXT so | |
3781 | that we don't interfere with follow fork, which is where | |
3782 | creation of such threads is handled. */ | |
3783 | remove_new_fork_children (&context); | |
74531fed | 3784 | |
ab970af1 | 3785 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3786 | for (thread_item &item : context.items) |
6dc54d91 | 3787 | { |
21fe1c75 | 3788 | if (item.ptid != null_ptid) |
6dc54d91 | 3789 | { |
6dc54d91 | 3790 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3791 | executing until proven otherwise with a stop reply. |
3792 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3793 | stopped. */ |
0d5b594f | 3794 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3795 | |
21fe1c75 | 3796 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3797 | |
7aabaf9d | 3798 | remote_thread_info *info = get_remote_thread_info (item.ptid); |
21fe1c75 | 3799 | info->core = item.core; |
7aabaf9d SM |
3800 | info->extra = std::move (item.extra); |
3801 | info->name = std::move (item.name); | |
3802 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3803 | } |
3804 | } | |
3805 | } | |
3806 | ||
ab970af1 PA |
3807 | if (!got_list) |
3808 | { | |
3809 | /* If no thread listing method is supported, then query whether | |
3810 | each known thread is alive, one by one, with the T packet. | |
3811 | If the target doesn't support threads at all, then this is a | |
3812 | no-op. See remote_thread_alive. */ | |
3813 | prune_threads (); | |
3814 | } | |
9d1f7ab2 MS |
3815 | } |
3816 | ||
802188a7 | 3817 | /* |
9d1f7ab2 MS |
3818 | * Collect a descriptive string about the given thread. |
3819 | * The target may say anything it wants to about the thread | |
3820 | * (typically info about its blocked / runnable state, name, etc.). | |
3821 | * This string will appear in the info threads display. | |
802188a7 | 3822 | * |
9d1f7ab2 MS |
3823 | * Optional: targets are not required to implement this function. |
3824 | */ | |
3825 | ||
f6ac5f3d PA |
3826 | const char * |
3827 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3828 | { |
d01949b6 | 3829 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3830 | int result; |
3831 | int set; | |
3832 | threadref id; | |
3833 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3834 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3835 | int n = 0; /* position in display_buf */ |
3836 | ||
5d93a237 | 3837 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3838 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3839 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3840 | |
60e569b9 | 3841 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3842 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3843 | /* This is the main thread which was added by GDB. The remote |
3844 | server doesn't know about it. */ | |
3845 | return NULL; | |
3846 | ||
4082afcc | 3847 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3848 | { |
3849 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3850 | |
7aabaf9d | 3851 | if (info != NULL && info->priv != NULL) |
a9334058 SM |
3852 | { |
3853 | const std::string &extra = get_remote_thread_info (info)->extra; | |
3854 | return !extra.empty () ? extra.c_str () : NULL; | |
3855 | } | |
dc146f7c VP |
3856 | else |
3857 | return NULL; | |
3858 | } | |
3859 | ||
b80fafe3 | 3860 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3861 | { |
82f73884 PA |
3862 | char *b = rs->buf; |
3863 | char *endb = rs->buf + get_remote_packet_size (); | |
3864 | ||
3865 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3866 | b += strlen (b); | |
3867 | write_ptid (b, endb, tp->ptid); | |
3868 | ||
2e9f7625 | 3869 | putpkt (rs->buf); |
6d820c5c | 3870 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3871 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3872 | { |
325fac50 | 3873 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3874 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3875 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3876 | return display_buf; |
3877 | } | |
0f71a2f6 | 3878 | } |
9d1f7ab2 MS |
3879 | |
3880 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3881 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3882 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3883 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3884 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3885 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3886 | if (threadinfo.active) | |
0f71a2f6 | 3887 | { |
9d1f7ab2 | 3888 | if (*threadinfo.shortname) |
2bc416ba | 3889 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3890 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3891 | if (*threadinfo.display) |
2bc416ba | 3892 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3893 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3894 | if (*threadinfo.more_display) |
2bc416ba | 3895 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3896 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3897 | |
3898 | if (n > 0) | |
c5aa993b | 3899 | { |
23860348 | 3900 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3901 | if (',' == display_buf[n-1]) |
3902 | display_buf[n-1] = ' '; | |
3903 | return display_buf; | |
c5aa993b | 3904 | } |
0f71a2f6 | 3905 | } |
9d1f7ab2 | 3906 | return NULL; |
0f71a2f6 | 3907 | } |
c906108c | 3908 | \f |
c5aa993b | 3909 | |
f6ac5f3d PA |
3910 | bool |
3911 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3912 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3913 | { |
3914 | struct remote_state *rs = get_remote_state (); | |
3915 | char *p = rs->buf; | |
3916 | ||
bba74b36 | 3917 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3918 | p += strlen (p); |
3919 | p += hexnumstr (p, addr); | |
3920 | putpkt (rs->buf); | |
3921 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3922 | p = rs->buf; | |
3923 | ||
3924 | if (*p == 'E') | |
3925 | error (_("Remote failure reply: %s"), p); | |
3926 | ||
3927 | if (*p++ == 'm') | |
3928 | { | |
256642e8 | 3929 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3930 | return true; |
0fb4aa4b PA |
3931 | } |
3932 | ||
5d9310c4 | 3933 | return false; |
0fb4aa4b PA |
3934 | } |
3935 | ||
f6ac5f3d PA |
3936 | std::vector<static_tracepoint_marker> |
3937 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
3938 | { |
3939 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3940 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3941 | const char *p; |
5d9310c4 | 3942 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3943 | |
3944 | /* Ask for a first packet of static tracepoint marker | |
3945 | definition. */ | |
3946 | putpkt ("qTfSTM"); | |
3947 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3948 | p = rs->buf; | |
3949 | if (*p == 'E') | |
3950 | error (_("Remote failure reply: %s"), p); | |
3951 | ||
0fb4aa4b PA |
3952 | while (*p++ == 'm') |
3953 | { | |
0fb4aa4b PA |
3954 | do |
3955 | { | |
5d9310c4 | 3956 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 3957 | |
5d9310c4 SM |
3958 | if (strid == NULL || marker.str_id == strid) |
3959 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
3960 | } |
3961 | while (*p++ == ','); /* comma-separated list */ | |
3962 | /* Ask for another packet of static tracepoint definition. */ | |
3963 | putpkt ("qTsSTM"); | |
3964 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3965 | p = rs->buf; | |
3966 | } | |
3967 | ||
0fb4aa4b PA |
3968 | return markers; |
3969 | } | |
3970 | ||
3971 | \f | |
10760264 JB |
3972 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3973 | ||
f6ac5f3d PA |
3974 | ptid_t |
3975 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 3976 | { |
ba348170 | 3977 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3978 | } |
3979 | \f | |
3980 | ||
24b06219 | 3981 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 3982 | |
6b8edb51 PA |
3983 | void |
3984 | remote_target::extended_remote_restart () | |
c906108c | 3985 | { |
d01949b6 | 3986 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3987 | |
3988 | /* Send the restart command; for reasons I don't understand the | |
3989 | remote side really expects a number after the "R". */ | |
ea9c271d | 3990 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3991 | putpkt (rs->buf); |
c906108c | 3992 | |
ad9a8f3f | 3993 | remote_fileio_reset (); |
c906108c SS |
3994 | } |
3995 | \f | |
3996 | /* Clean up connection to a remote debugger. */ | |
3997 | ||
f6ac5f3d PA |
3998 | void |
3999 | remote_target::close () | |
c906108c | 4000 | { |
048094ac | 4001 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4002 | terminal_ours (); |
ce5ce7ed | 4003 | |
ce5ce7ed | 4004 | /* We don't have a connection to the remote stub anymore. Get rid |
f67fd822 PM |
4005 | of all the inferiors and their threads we were controlling. |
4006 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
4007 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 4008 | inferior_ptid = null_ptid; |
f67fd822 | 4009 | discard_all_inferiors (); |
ce5ce7ed | 4010 | |
6b8edb51 PA |
4011 | trace_reset_local_state (); |
4012 | ||
4013 | delete this; | |
4014 | } | |
4015 | ||
4016 | remote_target::~remote_target () | |
4017 | { | |
4018 | struct remote_state *rs = get_remote_state (); | |
4019 | ||
4020 | /* Check for NULL because we may get here with a partially | |
4021 | constructed target/connection. */ | |
4022 | if (rs->remote_desc == nullptr) | |
4023 | return; | |
4024 | ||
4025 | serial_close (rs->remote_desc); | |
4026 | ||
4027 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4028 | everything of this target. */ |
6b8edb51 | 4029 | discard_pending_stop_replies_in_queue (); |
74531fed | 4030 | |
6b8edb51 PA |
4031 | if (rs->remote_async_inferior_event_token) |
4032 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4033 | |
5965e028 | 4034 | remote_notif_state_xfree (rs->notif_state); |
c906108c SS |
4035 | } |
4036 | ||
23860348 | 4037 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4038 | |
6b8edb51 PA |
4039 | void |
4040 | remote_target::get_offsets () | |
c906108c | 4041 | { |
d01949b6 | 4042 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4043 | char *buf; |
085dd6e6 | 4044 | char *ptr; |
31d99776 DJ |
4045 | int lose, num_segments = 0, do_sections, do_segments; |
4046 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 4047 | struct section_offsets *offs; |
31d99776 DJ |
4048 | struct symfile_segment_data *data; |
4049 | ||
4050 | if (symfile_objfile == NULL) | |
4051 | return; | |
c906108c SS |
4052 | |
4053 | putpkt ("qOffsets"); | |
6d820c5c | 4054 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4055 | buf = rs->buf; |
c906108c SS |
4056 | |
4057 | if (buf[0] == '\000') | |
4058 | return; /* Return silently. Stub doesn't support | |
23860348 | 4059 | this command. */ |
c906108c SS |
4060 | if (buf[0] == 'E') |
4061 | { | |
8a3fe4f8 | 4062 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4063 | return; |
4064 | } | |
4065 | ||
4066 | /* Pick up each field in turn. This used to be done with scanf, but | |
4067 | scanf will make trouble if CORE_ADDR size doesn't match | |
4068 | conversion directives correctly. The following code will work | |
4069 | with any size of CORE_ADDR. */ | |
4070 | text_addr = data_addr = bss_addr = 0; | |
4071 | ptr = buf; | |
4072 | lose = 0; | |
4073 | ||
61012eef | 4074 | if (startswith (ptr, "Text=")) |
c906108c SS |
4075 | { |
4076 | ptr += 5; | |
4077 | /* Don't use strtol, could lose on big values. */ | |
4078 | while (*ptr && *ptr != ';') | |
4079 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4080 | |
61012eef | 4081 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4082 | { |
4083 | ptr += 6; | |
4084 | while (*ptr && *ptr != ';') | |
4085 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4086 | } | |
4087 | else | |
4088 | lose = 1; | |
4089 | ||
61012eef | 4090 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4091 | { |
4092 | ptr += 5; | |
4093 | while (*ptr && *ptr != ';') | |
4094 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4095 | |
31d99776 DJ |
4096 | if (bss_addr != data_addr) |
4097 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4098 | } | |
4099 | else | |
4100 | lose = 1; | |
4101 | } | |
61012eef | 4102 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4103 | { |
31d99776 DJ |
4104 | ptr += 8; |
4105 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4106 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4107 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4108 | num_segments = 1; | |
4109 | ||
61012eef | 4110 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4111 | { |
4112 | ptr += 9; | |
4113 | while (*ptr && *ptr != ';') | |
4114 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4115 | num_segments++; | |
4116 | } | |
c906108c SS |
4117 | } |
4118 | else | |
4119 | lose = 1; | |
4120 | ||
4121 | if (lose) | |
8a3fe4f8 | 4122 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4123 | else if (*ptr != '\0') |
4124 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4125 | |
802188a7 | 4126 | offs = ((struct section_offsets *) |
a39a16c4 | 4127 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 4128 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 4129 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 4130 | |
31d99776 DJ |
4131 | data = get_symfile_segment_data (symfile_objfile->obfd); |
4132 | do_segments = (data != NULL); | |
4133 | do_sections = num_segments == 0; | |
c906108c | 4134 | |
28c32713 | 4135 | if (num_segments > 0) |
31d99776 | 4136 | { |
31d99776 DJ |
4137 | segments[0] = text_addr; |
4138 | segments[1] = data_addr; | |
4139 | } | |
28c32713 JB |
4140 | /* If we have two segments, we can still try to relocate everything |
4141 | by assuming that the .text and .data offsets apply to the whole | |
4142 | text and data segments. Convert the offsets given in the packet | |
4143 | to base addresses for symfile_map_offsets_to_segments. */ | |
4144 | else if (data && data->num_segments == 2) | |
4145 | { | |
4146 | segments[0] = data->segment_bases[0] + text_addr; | |
4147 | segments[1] = data->segment_bases[1] + data_addr; | |
4148 | num_segments = 2; | |
4149 | } | |
8d385431 DJ |
4150 | /* If the object file has only one segment, assume that it is text |
4151 | rather than data; main programs with no writable data are rare, | |
4152 | but programs with no code are useless. Of course the code might | |
4153 | have ended up in the data segment... to detect that we would need | |
4154 | the permissions here. */ | |
4155 | else if (data && data->num_segments == 1) | |
4156 | { | |
4157 | segments[0] = data->segment_bases[0] + text_addr; | |
4158 | num_segments = 1; | |
4159 | } | |
28c32713 JB |
4160 | /* There's no way to relocate by segment. */ |
4161 | else | |
4162 | do_segments = 0; | |
31d99776 DJ |
4163 | |
4164 | if (do_segments) | |
4165 | { | |
4166 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
4167 | offs, num_segments, segments); | |
4168 | ||
4169 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4170 | error (_("Can not handle qOffsets TextSeg " |
4171 | "response with this symbol file")); | |
31d99776 DJ |
4172 | |
4173 | if (ret > 0) | |
4174 | do_sections = 0; | |
4175 | } | |
c906108c | 4176 | |
9ef895d6 DJ |
4177 | if (data) |
4178 | free_symfile_segment_data (data); | |
31d99776 DJ |
4179 | |
4180 | if (do_sections) | |
4181 | { | |
4182 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
4183 | ||
3e43a32a MS |
4184 | /* This is a temporary kludge to force data and bss to use the |
4185 | same offsets because that's what nlmconv does now. The real | |
4186 | solution requires changes to the stub and remote.c that I | |
4187 | don't have time to do right now. */ | |
31d99776 DJ |
4188 | |
4189 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
4190 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
4191 | } | |
c906108c SS |
4192 | |
4193 | objfile_relocate (symfile_objfile, offs); | |
4194 | } | |
4195 | ||
9a7071a8 | 4196 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4197 | |
4198 | void | |
4199 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4200 | { |
5d93a237 TT |
4201 | struct remote_state *rs = get_remote_state (); |
4202 | ||
9a7071a8 | 4203 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4204 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4205 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4206 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4207 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4208 | { | |
5d93a237 | 4209 | serial_send_break (rs->remote_desc); |
c33e31fd | 4210 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4211 | } |
4212 | else | |
4213 | internal_error (__FILE__, __LINE__, | |
4214 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4215 | interrupt_sequence_mode); | |
4216 | } | |
4217 | ||
3405876a PA |
4218 | |
4219 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4220 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4221 | ||
4222 | static ptid_t | |
4223 | stop_reply_extract_thread (char *stop_reply) | |
4224 | { | |
4225 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4226 | { | |
256642e8 | 4227 | const char *p; |
3405876a PA |
4228 | |
4229 | /* Txx r:val ; r:val (...) */ | |
4230 | p = &stop_reply[3]; | |
4231 | ||
4232 | /* Look for "register" named "thread". */ | |
4233 | while (*p != '\0') | |
4234 | { | |
256642e8 | 4235 | const char *p1; |
3405876a PA |
4236 | |
4237 | p1 = strchr (p, ':'); | |
4238 | if (p1 == NULL) | |
4239 | return null_ptid; | |
4240 | ||
4241 | if (strncmp (p, "thread", p1 - p) == 0) | |
4242 | return read_ptid (++p1, &p); | |
4243 | ||
4244 | p1 = strchr (p, ';'); | |
4245 | if (p1 == NULL) | |
4246 | return null_ptid; | |
4247 | p1++; | |
4248 | ||
4249 | p = p1; | |
4250 | } | |
4251 | } | |
4252 | ||
4253 | return null_ptid; | |
4254 | } | |
4255 | ||
b7ea362b PA |
4256 | /* Determine the remote side's current thread. If we have a stop |
4257 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4258 | "thread" register we can extract the current thread from. If not, | |
4259 | ask the remote which is the current thread with qC. The former | |
4260 | method avoids a roundtrip. */ | |
4261 | ||
6b8edb51 PA |
4262 | ptid_t |
4263 | remote_target::get_current_thread (char *wait_status) | |
b7ea362b | 4264 | { |
6a49a997 | 4265 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4266 | |
4267 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4268 | the target architecture, which we haven't yet fully determined at | |
4269 | this point. */ | |
4270 | if (wait_status != NULL) | |
4271 | ptid = stop_reply_extract_thread (wait_status); | |
4272 | if (ptid_equal (ptid, null_ptid)) | |
4273 | ptid = remote_current_thread (inferior_ptid); | |
4274 | ||
4275 | return ptid; | |
4276 | } | |
4277 | ||
49c62f2e PA |
4278 | /* Query the remote target for which is the current thread/process, |
4279 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4280 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4281 | to return the current thread. |
4282 | ||
4283 | This function is called after handling the '?' or 'vRun' packets, | |
4284 | whose response is a stop reply from which we can also try | |
4285 | extracting the thread. If the target doesn't support the explicit | |
4286 | qC query, we infer the current thread from that stop reply, passed | |
4287 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e | 4288 | |
6b8edb51 PA |
4289 | void |
4290 | remote_target::add_current_inferior_and_thread (char *wait_status) | |
49c62f2e PA |
4291 | { |
4292 | struct remote_state *rs = get_remote_state (); | |
4293 | int fake_pid_p = 0; | |
49c62f2e PA |
4294 | |
4295 | inferior_ptid = null_ptid; | |
4296 | ||
b7ea362b | 4297 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 4298 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4299 | |
87215ad1 | 4300 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4301 | { |
4302 | if (!remote_multi_process_p (rs)) | |
4303 | fake_pid_p = 1; | |
49c62f2e PA |
4304 | } |
4305 | else | |
4306 | { | |
4307 | /* Without this, some commands which require an active target | |
4308 | (such as kill) won't work. This variable serves (at least) | |
4309 | double duty as both the pid of the target process (if it has | |
4310 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4311 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
4312 | fake_pid_p = 1; |
4313 | } | |
4314 | ||
87215ad1 | 4315 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 4316 | |
87215ad1 SDJ |
4317 | /* Add the main thread and switch to it. Don't try reading |
4318 | registers yet, since we haven't fetched the target description | |
4319 | yet. */ | |
4320 | thread_info *tp = add_thread_silent (curr_ptid); | |
4321 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
4322 | } |
4323 | ||
6efcd9a8 PA |
4324 | /* Print info about a thread that was found already stopped on |
4325 | connection. */ | |
4326 | ||
4327 | static void | |
4328 | print_one_stopped_thread (struct thread_info *thread) | |
4329 | { | |
4330 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4331 | ||
4332 | switch_to_thread (thread->ptid); | |
4333 | stop_pc = get_frame_pc (get_current_frame ()); | |
4334 | set_current_sal_from_frame (get_current_frame ()); | |
4335 | ||
4336 | thread->suspend.waitstatus_pending_p = 0; | |
4337 | ||
4338 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4339 | { | |
4340 | enum gdb_signal sig = ws->value.sig; | |
4341 | ||
4342 | if (signal_print_state (sig)) | |
76727919 | 4343 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4344 | } |
76727919 | 4345 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4346 | } |
4347 | ||
221e1a37 PA |
4348 | /* Process all initial stop replies the remote side sent in response |
4349 | to the ? packet. These indicate threads that were already stopped | |
4350 | on initial connection. We mark these threads as stopped and print | |
4351 | their current frame before giving the user the prompt. */ | |
4352 | ||
6b8edb51 PA |
4353 | void |
4354 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4355 | { |
4356 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4357 | struct inferior *inf; |
4358 | struct thread_info *thread; | |
4359 | struct thread_info *selected = NULL; | |
4360 | struct thread_info *lowest_stopped = NULL; | |
4361 | struct thread_info *first = NULL; | |
221e1a37 PA |
4362 | |
4363 | /* Consume the initial pending events. */ | |
4364 | while (pending_stop_replies-- > 0) | |
4365 | { | |
4366 | ptid_t waiton_ptid = minus_one_ptid; | |
4367 | ptid_t event_ptid; | |
4368 | struct target_waitstatus ws; | |
4369 | int ignore_event = 0; | |
6efcd9a8 | 4370 | struct thread_info *thread; |
221e1a37 PA |
4371 | |
4372 | memset (&ws, 0, sizeof (ws)); | |
4373 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4374 | if (remote_debug) | |
4375 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4376 | ||
4377 | switch (ws.kind) | |
4378 | { | |
4379 | case TARGET_WAITKIND_IGNORE: | |
4380 | case TARGET_WAITKIND_NO_RESUMED: | |
4381 | case TARGET_WAITKIND_SIGNALLED: | |
4382 | case TARGET_WAITKIND_EXITED: | |
4383 | /* We shouldn't see these, but if we do, just ignore. */ | |
4384 | if (remote_debug) | |
4385 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4386 | ignore_event = 1; | |
4387 | break; | |
4388 | ||
4389 | case TARGET_WAITKIND_EXECD: | |
4390 | xfree (ws.value.execd_pathname); | |
4391 | break; | |
4392 | default: | |
4393 | break; | |
4394 | } | |
4395 | ||
4396 | if (ignore_event) | |
4397 | continue; | |
4398 | ||
6efcd9a8 | 4399 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
4400 | |
4401 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4402 | { | |
4403 | enum gdb_signal sig = ws.value.sig; | |
4404 | ||
4405 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4406 | instead of signal 0. Suppress it. */ | |
4407 | if (sig == GDB_SIGNAL_TRAP) | |
4408 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
4409 | thread->suspend.stop_signal = sig; |
4410 | ws.value.sig = sig; | |
4411 | } | |
221e1a37 | 4412 | |
6efcd9a8 PA |
4413 | thread->suspend.waitstatus = ws; |
4414 | ||
4415 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4416 | || ws.value.sig != GDB_SIGNAL_0) | |
4417 | thread->suspend.waitstatus_pending_p = 1; | |
4418 | ||
4419 | set_executing (event_ptid, 0); | |
4420 | set_running (event_ptid, 0); | |
7aabaf9d | 4421 | get_remote_thread_info (thread)->vcont_resumed = 0; |
6efcd9a8 PA |
4422 | } |
4423 | ||
4424 | /* "Notice" the new inferiors before anything related to | |
4425 | registers/memory. */ | |
4426 | ALL_INFERIORS (inf) | |
4427 | { | |
4428 | if (inf->pid == 0) | |
4429 | continue; | |
4430 | ||
4431 | inf->needs_setup = 1; | |
4432 | ||
4433 | if (non_stop) | |
4434 | { | |
4435 | thread = any_live_thread_of_process (inf->pid); | |
4436 | notice_new_inferior (thread->ptid, | |
4437 | thread->state == THREAD_RUNNING, | |
4438 | from_tty); | |
4439 | } | |
4440 | } | |
4441 | ||
4442 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4443 | records the threads' stop pc, so must be done after "noticing" | |
4444 | the inferiors. */ | |
4445 | if (!non_stop) | |
4446 | { | |
4447 | stop_all_threads (); | |
4448 | ||
4449 | /* If all threads of an inferior were already stopped, we | |
4450 | haven't setup the inferior yet. */ | |
4451 | ALL_INFERIORS (inf) | |
4452 | { | |
4453 | if (inf->pid == 0) | |
4454 | continue; | |
221e1a37 | 4455 | |
6efcd9a8 PA |
4456 | if (inf->needs_setup) |
4457 | { | |
4458 | thread = any_live_thread_of_process (inf->pid); | |
4459 | switch_to_thread_no_regs (thread); | |
4460 | setup_inferior (0); | |
4461 | } | |
4462 | } | |
221e1a37 | 4463 | } |
6efcd9a8 PA |
4464 | |
4465 | /* Now go over all threads that are stopped, and print their current | |
4466 | frame. If all-stop, then if there's a signalled thread, pick | |
4467 | that as current. */ | |
4468 | ALL_NON_EXITED_THREADS (thread) | |
4469 | { | |
6efcd9a8 PA |
4470 | if (first == NULL) |
4471 | first = thread; | |
4472 | ||
4473 | if (!non_stop) | |
4474 | set_running (thread->ptid, 0); | |
4475 | else if (thread->state != THREAD_STOPPED) | |
4476 | continue; | |
4477 | ||
6efcd9a8 PA |
4478 | if (selected == NULL |
4479 | && thread->suspend.waitstatus_pending_p) | |
4480 | selected = thread; | |
4481 | ||
5d5658a1 PA |
4482 | if (lowest_stopped == NULL |
4483 | || thread->inf->num < lowest_stopped->inf->num | |
4484 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4485 | lowest_stopped = thread; |
4486 | ||
4487 | if (non_stop) | |
4488 | print_one_stopped_thread (thread); | |
4489 | } | |
4490 | ||
4491 | /* In all-stop, we only print the status of one thread, and leave | |
4492 | others with their status pending. */ | |
4493 | if (!non_stop) | |
4494 | { | |
4495 | thread = selected; | |
4496 | if (thread == NULL) | |
4497 | thread = lowest_stopped; | |
4498 | if (thread == NULL) | |
4499 | thread = first; | |
4500 | ||
4501 | print_one_stopped_thread (thread); | |
4502 | } | |
4503 | ||
4504 | /* For "info program". */ | |
4505 | thread = inferior_thread (); | |
4506 | if (thread->state == THREAD_STOPPED) | |
4507 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4508 | } |
4509 | ||
048094ac PA |
4510 | /* Start the remote connection and sync state. */ |
4511 | ||
f6ac5f3d PA |
4512 | void |
4513 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4514 | { |
c8d104ad PA |
4515 | struct remote_state *rs = get_remote_state (); |
4516 | struct packet_config *noack_config; | |
2d717e4f | 4517 | char *wait_status = NULL; |
8621d6a9 | 4518 | |
048094ac PA |
4519 | /* Signal other parts that we're going through the initial setup, |
4520 | and so things may not be stable yet. E.g., we don't try to | |
4521 | install tracepoints until we've relocated symbols. Also, a | |
4522 | Ctrl-C before we're connected and synced up can't interrupt the | |
4523 | target. Instead, it offers to drop the (potentially wedged) | |
4524 | connection. */ | |
4525 | rs->starting_up = 1; | |
4526 | ||
522002f9 | 4527 | QUIT; |
c906108c | 4528 | |
9a7071a8 JB |
4529 | if (interrupt_on_connect) |
4530 | send_interrupt_sequence (); | |
4531 | ||
57e12211 | 4532 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4533 | remote_serial_write ("+", 1); |
1e51243a | 4534 | |
c8d104ad PA |
4535 | /* The first packet we send to the target is the optional "supported |
4536 | packets" request. If the target can answer this, it will tell us | |
4537 | which later probes to skip. */ | |
4538 | remote_query_supported (); | |
4539 | ||
d914c394 | 4540 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4541 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4542 | set_permissions (); |
d914c394 | 4543 | |
57809e5e JK |
4544 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4545 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4546 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4547 | invalid reply and GDB would return error in | |
4548 | remote_hostio_set_filesystem, making remote files access impossible. | |
4549 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4550 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4551 | { | |
4552 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4553 | ||
4554 | putpkt (v_mustreplyempty); | |
4555 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4556 | if (strcmp (rs->buf, "OK") == 0) | |
4557 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4558 | else if (strcmp (rs->buf, "") != 0) | |
4559 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4560 | rs->buf); | |
4561 | } | |
4562 | ||
c8d104ad PA |
4563 | /* Next, we possibly activate noack mode. |
4564 | ||
4565 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4566 | enable noack mode if the stub reported a wish for it with | |
4567 | qSupported. | |
4568 | ||
4569 | If set to TRUE, then enable noack mode even if the stub didn't | |
4570 | report it in qSupported. If the stub doesn't reply OK, the | |
4571 | session ends with an error. | |
4572 | ||
4573 | If FALSE, then don't activate noack mode, regardless of what the | |
4574 | stub claimed should be the default with qSupported. */ | |
4575 | ||
4576 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4577 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4578 | { |
4579 | putpkt ("QStartNoAckMode"); | |
4580 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4581 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4582 | rs->noack_mode = 1; | |
4583 | } | |
4584 | ||
04bd08de | 4585 | if (extended_p) |
5fe04517 PA |
4586 | { |
4587 | /* Tell the remote that we are using the extended protocol. */ | |
4588 | putpkt ("!"); | |
4589 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4590 | } | |
4591 | ||
9b224c5e PA |
4592 | /* Let the target know which signals it is allowed to pass down to |
4593 | the program. */ | |
4594 | update_signals_program_target (); | |
4595 | ||
d962ef82 DJ |
4596 | /* Next, if the target can specify a description, read it. We do |
4597 | this before anything involving memory or registers. */ | |
4598 | target_find_description (); | |
4599 | ||
6c95b8df PA |
4600 | /* Next, now that we know something about the target, update the |
4601 | address spaces in the program spaces. */ | |
4602 | update_address_spaces (); | |
4603 | ||
50c71eaf PA |
4604 | /* On OSs where the list of libraries is global to all |
4605 | processes, we fetch them early. */ | |
f5656ead | 4606 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4607 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4608 | |
6efcd9a8 | 4609 | if (target_is_non_stop_p ()) |
74531fed | 4610 | { |
4082afcc | 4611 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4612 | error (_("Non-stop mode requested, but remote " |
4613 | "does not support non-stop")); | |
74531fed PA |
4614 | |
4615 | putpkt ("QNonStop:1"); | |
4616 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4617 | ||
4618 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4619 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4620 | |
4621 | /* Find about threads and processes the stub is already | |
4622 | controlling. We default to adding them in the running state. | |
4623 | The '?' query below will then tell us about which threads are | |
4624 | stopped. */ | |
f6ac5f3d | 4625 | this->update_thread_list (); |
74531fed | 4626 | } |
4082afcc | 4627 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4628 | { |
4629 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4630 | Request it explicitly. */ |
74531fed PA |
4631 | putpkt ("QNonStop:0"); |
4632 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4633 | ||
4634 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4635 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4636 | } |
4637 | ||
a0743c90 YQ |
4638 | /* Upload TSVs regardless of whether the target is running or not. The |
4639 | remote stub, such as GDBserver, may have some predefined or builtin | |
4640 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4641 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4642 | { |
4643 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4644 | ||
f6ac5f3d | 4645 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4646 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4647 | } | |
4648 | ||
2d717e4f DJ |
4649 | /* Check whether the target is running now. */ |
4650 | putpkt ("?"); | |
4651 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4652 | ||
6efcd9a8 | 4653 | if (!target_is_non_stop_p ()) |
2d717e4f | 4654 | { |
74531fed | 4655 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4656 | { |
04bd08de | 4657 | if (!extended_p) |
74531fed | 4658 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4659 | |
4660 | /* We're connected, but not running. Drop out before we | |
4661 | call start_remote. */ | |
e278ad5b | 4662 | rs->starting_up = 0; |
c35b1492 | 4663 | return; |
2d717e4f DJ |
4664 | } |
4665 | else | |
74531fed | 4666 | { |
74531fed | 4667 | /* Save the reply for later. */ |
224c3ddb | 4668 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4669 | strcpy (wait_status, rs->buf); |
4670 | } | |
4671 | ||
b7ea362b | 4672 | /* Fetch thread list. */ |
e8032dde | 4673 | target_update_thread_list (); |
b7ea362b | 4674 | |
74531fed PA |
4675 | /* Let the stub know that we want it to return the thread. */ |
4676 | set_continue_thread (minus_one_ptid); | |
4677 | ||
b7ea362b PA |
4678 | if (thread_count () == 0) |
4679 | { | |
4680 | /* Target has no concept of threads at all. GDB treats | |
4681 | non-threaded target as single-threaded; add a main | |
4682 | thread. */ | |
4683 | add_current_inferior_and_thread (wait_status); | |
4684 | } | |
4685 | else | |
4686 | { | |
4687 | /* We have thread information; select the thread the target | |
4688 | says should be current. If we're reconnecting to a | |
4689 | multi-threaded program, this will ideally be the thread | |
4690 | that last reported an event before GDB disconnected. */ | |
4691 | inferior_ptid = get_current_thread (wait_status); | |
4692 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4693 | { | |
4694 | /* Odd... The target was able to list threads, but not | |
4695 | tell us which thread was current (no "thread" | |
4696 | register in T stop reply?). Just pick the first | |
4697 | thread in the thread list then. */ | |
c9f35b34 KB |
4698 | |
4699 | if (remote_debug) | |
4700 | fprintf_unfiltered (gdb_stdlog, | |
4701 | "warning: couldn't determine remote " | |
4702 | "current thread; picking first in list.\n"); | |
4703 | ||
b7ea362b PA |
4704 | inferior_ptid = thread_list->ptid; |
4705 | } | |
4706 | } | |
74531fed | 4707 | |
6e586cc5 YQ |
4708 | /* init_wait_for_inferior should be called before get_offsets in order |
4709 | to manage `inserted' flag in bp loc in a correct state. | |
4710 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4711 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4712 | start_remote, set `inserted' flag to 1. In the initialization of | |
4713 | inferior, breakpoint_init_inferior should be called first, and then | |
4714 | breakpoint_re_set can be called. If this order is broken, state of | |
4715 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4716 | manipulation. */ | |
4717 | init_wait_for_inferior (); | |
4718 | ||
74531fed PA |
4719 | get_offsets (); /* Get text, data & bss offsets. */ |
4720 | ||
d962ef82 DJ |
4721 | /* If we could not find a description using qXfer, and we know |
4722 | how to do it some other way, try again. This is not | |
4723 | supported for non-stop; it could be, but it is tricky if | |
4724 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4725 | if (remote_read_description_p (this) |
f5656ead | 4726 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4727 | { |
4728 | target_clear_description (); | |
4729 | target_find_description (); | |
4730 | } | |
4731 | ||
74531fed PA |
4732 | /* Use the previously fetched status. */ |
4733 | gdb_assert (wait_status != NULL); | |
4734 | strcpy (rs->buf, wait_status); | |
4735 | rs->cached_wait_status = 1; | |
4736 | ||
f6ac5f3d | 4737 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4738 | } |
4739 | else | |
4740 | { | |
68c97600 PA |
4741 | /* Clear WFI global state. Do this before finding about new |
4742 | threads and inferiors, and setting the current inferior. | |
4743 | Otherwise we would clear the proceed status of the current | |
4744 | inferior when we want its stop_soon state to be preserved | |
4745 | (see notice_new_inferior). */ | |
4746 | init_wait_for_inferior (); | |
4747 | ||
74531fed PA |
4748 | /* In non-stop, we will either get an "OK", meaning that there |
4749 | are no stopped threads at this time; or, a regular stop | |
4750 | reply. In the latter case, there may be more than one thread | |
4751 | stopped --- we pull them all out using the vStopped | |
4752 | mechanism. */ | |
4753 | if (strcmp (rs->buf, "OK") != 0) | |
4754 | { | |
722247f1 | 4755 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4756 | |
722247f1 YQ |
4757 | /* remote_notif_get_pending_replies acks this one, and gets |
4758 | the rest out. */ | |
f48ff2a7 | 4759 | rs->notif_state->pending_event[notif_client_stop.id] |
6b8edb51 | 4760 | = remote_notif_parse (this, notif, rs->buf); |
722247f1 | 4761 | remote_notif_get_pending_events (notif); |
74531fed | 4762 | } |
2d717e4f | 4763 | |
74531fed PA |
4764 | if (thread_count () == 0) |
4765 | { | |
04bd08de | 4766 | if (!extended_p) |
74531fed | 4767 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4768 | |
c35b1492 PA |
4769 | /* We're connected, but not running. Drop out before we |
4770 | call start_remote. */ | |
e278ad5b | 4771 | rs->starting_up = 0; |
c35b1492 PA |
4772 | return; |
4773 | } | |
74531fed | 4774 | |
74531fed PA |
4775 | /* In non-stop mode, any cached wait status will be stored in |
4776 | the stop reply queue. */ | |
4777 | gdb_assert (wait_status == NULL); | |
f0223081 | 4778 | |
2455069d | 4779 | /* Report all signals during attach/startup. */ |
f6ac5f3d | 4780 | pass_signals (0, NULL); |
221e1a37 PA |
4781 | |
4782 | /* If there are already stopped threads, mark them stopped and | |
4783 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4784 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4785 | |
4786 | if (target_can_async_p ()) | |
4787 | target_async (1); | |
74531fed | 4788 | } |
c8d104ad | 4789 | |
c8d104ad PA |
4790 | /* If we connected to a live target, do some additional setup. */ |
4791 | if (target_has_execution) | |
4792 | { | |
f4ccffad | 4793 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4794 | remote_check_symbols (); |
c8d104ad | 4795 | } |
50c71eaf | 4796 | |
d5551862 SS |
4797 | /* Possibly the target has been engaged in a trace run started |
4798 | previously; find out where things are at. */ | |
f6ac5f3d | 4799 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4800 | { |
00bf0b85 | 4801 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4802 | |
00bf0b85 SS |
4803 | if (current_trace_status ()->running) |
4804 | printf_filtered (_("Trace is already running on the target.\n")); | |
4805 | ||
f6ac5f3d | 4806 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4807 | |
4808 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4809 | } |
4810 | ||
c0272db5 TW |
4811 | /* Possibly the target has been engaged in a btrace record started |
4812 | previously; find out where things are at. */ | |
4813 | remote_btrace_maybe_reopen (); | |
4814 | ||
1e51243a PA |
4815 | /* The thread and inferior lists are now synchronized with the |
4816 | target, our symbols have been relocated, and we're merged the | |
4817 | target's tracepoints with ours. We're done with basic start | |
4818 | up. */ | |
4819 | rs->starting_up = 0; | |
4820 | ||
a25a5a45 PA |
4821 | /* Maybe breakpoints are global and need to be inserted now. */ |
4822 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4823 | insert_breakpoints (); |
c906108c SS |
4824 | } |
4825 | ||
4826 | /* Open a connection to a remote debugger. | |
4827 | NAME is the filename used for communication. */ | |
4828 | ||
f6ac5f3d PA |
4829 | void |
4830 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4831 | { |
f6ac5f3d | 4832 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4833 | } |
4834 | ||
c906108c SS |
4835 | /* Open a connection to a remote debugger using the extended |
4836 | remote gdb protocol. NAME is the filename used for communication. */ | |
4837 | ||
f6ac5f3d PA |
4838 | void |
4839 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4840 | { |
f6ac5f3d | 4841 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4842 | } |
4843 | ||
ca4f7f8b PA |
4844 | /* Reset all packets back to "unknown support". Called when opening a |
4845 | new connection to a remote target. */ | |
c906108c | 4846 | |
d471ea57 | 4847 | static void |
ca4f7f8b | 4848 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4849 | { |
4850 | int i; | |
a744cf53 | 4851 | |
444abaca | 4852 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4853 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4854 | } |
4855 | ||
ca4f7f8b PA |
4856 | /* Initialize all packet configs. */ |
4857 | ||
4858 | static void | |
4859 | init_all_packet_configs (void) | |
4860 | { | |
4861 | int i; | |
4862 | ||
4863 | for (i = 0; i < PACKET_MAX; i++) | |
4864 | { | |
4865 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4866 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4867 | } | |
4868 | } | |
4869 | ||
23860348 | 4870 | /* Symbol look-up. */ |
dc8acb97 | 4871 | |
6b8edb51 PA |
4872 | void |
4873 | remote_target::remote_check_symbols () | |
dc8acb97 MS |
4874 | { |
4875 | char *msg, *reply, *tmp; | |
dc8acb97 | 4876 | int end; |
28170b88 | 4877 | long reply_size; |
a5c0808e | 4878 | struct cleanup *old_chain; |
dc8acb97 | 4879 | |
63154eca PA |
4880 | /* The remote side has no concept of inferiors that aren't running |
4881 | yet, it only knows about running processes. If we're connected | |
4882 | but our current inferior is not running, we should not invite the | |
4883 | remote target to request symbol lookups related to its | |
4884 | (unrelated) current process. */ | |
4885 | if (!target_has_execution) | |
4886 | return; | |
4887 | ||
4082afcc | 4888 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4889 | return; |
4890 | ||
63154eca PA |
4891 | /* Make sure the remote is pointing at the right process. Note |
4892 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4893 | set_general_process (); |
4894 | ||
6d820c5c DJ |
4895 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4896 | because we need both at the same time. */ | |
224c3ddb | 4897 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4898 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4899 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4900 | make_cleanup (free_current_contents, &reply); | |
4901 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4902 | |
23860348 | 4903 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4904 | |
4905 | putpkt ("qSymbol::"); | |
28170b88 MK |
4906 | getpkt (&reply, &reply_size, 0); |
4907 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4908 | |
61012eef | 4909 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4910 | { |
77e371c0 TT |
4911 | struct bound_minimal_symbol sym; |
4912 | ||
dc8acb97 | 4913 | tmp = &reply[8]; |
cfd77fa1 | 4914 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4915 | msg[end] = '\0'; |
4916 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4917 | if (sym.minsym == NULL) |
ea9c271d | 4918 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4919 | else |
2bbe3cc1 | 4920 | { |
f5656ead | 4921 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4922 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4923 | |
4924 | /* If this is a function address, return the start of code | |
4925 | instead of any data function descriptor. */ | |
f5656ead | 4926 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4927 | sym_addr, |
8b88a78e | 4928 | current_top_target ()); |
2bbe3cc1 DJ |
4929 | |
4930 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4931 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4932 | } |
4933 | ||
dc8acb97 | 4934 | putpkt (msg); |
28170b88 | 4935 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4936 | } |
a5c0808e PA |
4937 | |
4938 | do_cleanups (old_chain); | |
dc8acb97 MS |
4939 | } |
4940 | ||
9db8d71f | 4941 | static struct serial * |
baa336ce | 4942 | remote_serial_open (const char *name) |
9db8d71f DJ |
4943 | { |
4944 | static int udp_warning = 0; | |
4945 | ||
4946 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4947 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4948 | serial connection is reliable and not the serial connection promising | |
4949 | to be. */ | |
61012eef | 4950 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4951 | { |
3e43a32a MS |
4952 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4953 | "Some events may be lost, rendering further debugging " | |
4954 | "impossible.")); | |
9db8d71f DJ |
4955 | udp_warning = 1; |
4956 | } | |
4957 | ||
4958 | return serial_open (name); | |
4959 | } | |
4960 | ||
d914c394 SS |
4961 | /* Inform the target of our permission settings. The permission flags |
4962 | work without this, but if the target knows the settings, it can do | |
4963 | a couple things. First, it can add its own check, to catch cases | |
4964 | that somehow manage to get by the permissions checks in target | |
4965 | methods. Second, if the target is wired to disallow particular | |
4966 | settings (for instance, a system in the field that is not set up to | |
4967 | be able to stop at a breakpoint), it can object to any unavailable | |
4968 | permissions. */ | |
4969 | ||
4970 | void | |
f6ac5f3d | 4971 | remote_target::set_permissions () |
d914c394 SS |
4972 | { |
4973 | struct remote_state *rs = get_remote_state (); | |
4974 | ||
bba74b36 YQ |
4975 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4976 | "WriteReg:%x;WriteMem:%x;" | |
4977 | "InsertBreak:%x;InsertTrace:%x;" | |
4978 | "InsertFastTrace:%x;Stop:%x", | |
4979 | may_write_registers, may_write_memory, | |
4980 | may_insert_breakpoints, may_insert_tracepoints, | |
4981 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4982 | putpkt (rs->buf); |
4983 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4984 | ||
4985 | /* If the target didn't like the packet, warn the user. Do not try | |
4986 | to undo the user's settings, that would just be maddening. */ | |
4987 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4988 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4989 | } |
4990 | ||
be2a5f71 DJ |
4991 | /* This type describes each known response to the qSupported |
4992 | packet. */ | |
4993 | struct protocol_feature | |
4994 | { | |
4995 | /* The name of this protocol feature. */ | |
4996 | const char *name; | |
4997 | ||
4998 | /* The default for this protocol feature. */ | |
4999 | enum packet_support default_support; | |
5000 | ||
5001 | /* The function to call when this feature is reported, or after | |
5002 | qSupported processing if the feature is not supported. | |
5003 | The first argument points to this structure. The second | |
5004 | argument indicates whether the packet requested support be | |
5005 | enabled, disabled, or probed (or the default, if this function | |
5006 | is being called at the end of processing and this feature was | |
5007 | not reported). The third argument may be NULL; if not NULL, it | |
5008 | is a NUL-terminated string taken from the packet following | |
5009 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5010 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5011 | enum packet_support, const char *); | |
be2a5f71 DJ |
5012 | |
5013 | /* The corresponding packet for this feature. Only used if | |
5014 | FUNC is remote_supported_packet. */ | |
5015 | int packet; | |
5016 | }; | |
5017 | ||
be2a5f71 | 5018 | static void |
6b8edb51 PA |
5019 | remote_supported_packet (remote_target *remote, |
5020 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5021 | enum packet_support support, |
5022 | const char *argument) | |
5023 | { | |
5024 | if (argument) | |
5025 | { | |
5026 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5027 | " \"%s\"."), feature->name); | |
5028 | return; | |
5029 | } | |
5030 | ||
4082afcc | 5031 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5032 | } |
be2a5f71 | 5033 | |
6b8edb51 PA |
5034 | void |
5035 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5036 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5037 | { |
5038 | struct remote_state *rs = get_remote_state (); | |
5039 | ||
5040 | int packet_size; | |
5041 | char *value_end; | |
5042 | ||
5043 | if (support != PACKET_ENABLE) | |
5044 | return; | |
5045 | ||
5046 | if (value == NULL || *value == '\0') | |
5047 | { | |
5048 | warning (_("Remote target reported \"%s\" without a size."), | |
5049 | feature->name); | |
5050 | return; | |
5051 | } | |
5052 | ||
5053 | errno = 0; | |
5054 | packet_size = strtol (value, &value_end, 16); | |
5055 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5056 | { | |
5057 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5058 | feature->name, value); | |
5059 | return; | |
5060 | } | |
5061 | ||
be2a5f71 DJ |
5062 | /* Record the new maximum packet size. */ |
5063 | rs->explicit_packet_size = packet_size; | |
5064 | } | |
5065 | ||
6b8edb51 PA |
5066 | void |
5067 | remote_packet_size (remote_target *remote, const protocol_feature *feature, | |
5068 | enum packet_support support, const char *value) | |
5069 | { | |
5070 | remote->remote_packet_size (feature, support, value); | |
5071 | } | |
5072 | ||
dc473cfb | 5073 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5074 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5075 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5076 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5077 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5078 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5079 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5080 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5081 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5082 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5083 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5084 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5085 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5086 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5087 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5088 | PACKET_qXfer_memory_map }, |
4de6483e UW |
5089 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
5090 | PACKET_qXfer_spu_read }, | |
5091 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
5092 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
5093 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5094 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5095 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5096 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5097 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5098 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5099 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5100 | PACKET_QPassSignals }, | |
82075af2 JS |
5101 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5102 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5103 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5104 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5105 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5106 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5107 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5108 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5109 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5110 | PACKET_QEnvironmentHexEncoded }, | |
5111 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5112 | PACKET_QEnvironmentReset }, | |
5113 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5114 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5115 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5116 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5117 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5118 | PACKET_multiprocess_feature }, | |
5119 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5120 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5121 | PACKET_qXfer_siginfo_read }, | |
5122 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5123 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5124 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5125 | PACKET_ConditionalTracepoints }, |
4082afcc | 5126 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5127 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5128 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5129 | PACKET_BreakpointCommands }, |
4082afcc | 5130 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5131 | PACKET_FastTracepoints }, |
4082afcc | 5132 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5133 | PACKET_StaticTracepoints }, |
4082afcc | 5134 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5135 | PACKET_InstallInTrace}, |
4082afcc PA |
5136 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5137 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5138 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5139 | PACKET_bc }, | |
5140 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5141 | PACKET_bs }, | |
409873ef SS |
5142 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5143 | PACKET_TracepointSource }, | |
d914c394 SS |
5144 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5145 | PACKET_QAllow }, | |
4082afcc PA |
5146 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5147 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5148 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5149 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5150 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5151 | PACKET_qXfer_uib }, | |
03583c20 UW |
5152 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5153 | PACKET_QDisableRandomization }, | |
d1feda86 | 5154 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5155 | { "QTBuffer:size", PACKET_DISABLE, |
5156 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5157 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5158 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5159 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5160 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5161 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5162 | PACKET_qXfer_btrace }, |
5163 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5164 | PACKET_qXfer_btrace_conf }, |
5165 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5166 | PACKET_Qbtrace_conf_bts_size }, |
5167 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5168 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5169 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5170 | PACKET_fork_event_feature }, | |
5171 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5172 | PACKET_vfork_event_feature }, | |
94585166 DB |
5173 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5174 | PACKET_exec_event_feature }, | |
b20a6524 | 5175 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5176 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5177 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5178 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5179 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
5180 | }; |
5181 | ||
c8d5aac9 L |
5182 | static char *remote_support_xml; |
5183 | ||
5184 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5185 | ||
5186 | void | |
6e39997a | 5187 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5188 | { |
5189 | #if defined(HAVE_LIBEXPAT) | |
5190 | if (remote_support_xml == NULL) | |
c4f7c687 | 5191 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5192 | else |
5193 | { | |
5194 | char *copy = xstrdup (remote_support_xml + 13); | |
5195 | char *p = strtok (copy, ","); | |
5196 | ||
5197 | do | |
5198 | { | |
5199 | if (strcmp (p, xml) == 0) | |
5200 | { | |
5201 | /* already there */ | |
5202 | xfree (copy); | |
5203 | return; | |
5204 | } | |
5205 | } | |
5206 | while ((p = strtok (NULL, ",")) != NULL); | |
5207 | xfree (copy); | |
5208 | ||
94b0dee1 PA |
5209 | remote_support_xml = reconcat (remote_support_xml, |
5210 | remote_support_xml, ",", xml, | |
5211 | (char *) NULL); | |
c8d5aac9 L |
5212 | } |
5213 | #endif | |
5214 | } | |
5215 | ||
69b6ecb0 TT |
5216 | static void |
5217 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5218 | { |
69b6ecb0 TT |
5219 | if (!msg->empty ()) |
5220 | msg->append (";"); | |
5221 | msg->append (append); | |
c8d5aac9 L |
5222 | } |
5223 | ||
6b8edb51 PA |
5224 | void |
5225 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5226 | { |
5227 | struct remote_state *rs = get_remote_state (); | |
5228 | char *next; | |
5229 | int i; | |
5230 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5231 | ||
5232 | /* The packet support flags are handled differently for this packet | |
5233 | than for most others. We treat an error, a disabled packet, and | |
5234 | an empty response identically: any features which must be reported | |
5235 | to be used will be automatically disabled. An empty buffer | |
5236 | accomplishes this, since that is also the representation for a list | |
5237 | containing no features. */ | |
5238 | ||
5239 | rs->buf[0] = 0; | |
4082afcc | 5240 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5241 | { |
69b6ecb0 | 5242 | std::string q; |
c8d5aac9 | 5243 | |
73b8c1fd | 5244 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5245 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5246 | |
f7e6eed5 | 5247 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5248 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5249 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5250 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5251 | |
69b6ecb0 | 5252 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5253 | |
8020350c DB |
5254 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5255 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5256 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5257 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5258 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5259 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5260 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5261 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5262 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5263 | |
750ce8d1 | 5264 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5265 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5266 | |
65706a29 | 5267 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5268 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5269 | |
f2faf941 | 5270 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5271 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5272 | |
b35d5edb PA |
5273 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5274 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5275 | if (remote_support_xml != NULL |
5276 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5277 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5278 | |
69b6ecb0 TT |
5279 | q = "qSupported:" + q; |
5280 | putpkt (q.c_str ()); | |
94b0dee1 | 5281 | |
be2a5f71 DJ |
5282 | getpkt (&rs->buf, &rs->buf_size, 0); |
5283 | ||
5284 | /* If an error occured, warn, but do not return - just reset the | |
5285 | buffer to empty and go on to disable features. */ | |
5286 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5287 | == PACKET_ERROR) | |
5288 | { | |
5289 | warning (_("Remote failure reply: %s"), rs->buf); | |
5290 | rs->buf[0] = 0; | |
5291 | } | |
5292 | } | |
5293 | ||
5294 | memset (seen, 0, sizeof (seen)); | |
5295 | ||
5296 | next = rs->buf; | |
5297 | while (*next) | |
5298 | { | |
5299 | enum packet_support is_supported; | |
5300 | char *p, *end, *name_end, *value; | |
5301 | ||
5302 | /* First separate out this item from the rest of the packet. If | |
5303 | there's another item after this, we overwrite the separator | |
5304 | (terminated strings are much easier to work with). */ | |
5305 | p = next; | |
5306 | end = strchr (p, ';'); | |
5307 | if (end == NULL) | |
5308 | { | |
5309 | end = p + strlen (p); | |
5310 | next = end; | |
5311 | } | |
5312 | else | |
5313 | { | |
89be2091 DJ |
5314 | *end = '\0'; |
5315 | next = end + 1; | |
5316 | ||
be2a5f71 DJ |
5317 | if (end == p) |
5318 | { | |
5319 | warning (_("empty item in \"qSupported\" response")); | |
5320 | continue; | |
5321 | } | |
be2a5f71 DJ |
5322 | } |
5323 | ||
5324 | name_end = strchr (p, '='); | |
5325 | if (name_end) | |
5326 | { | |
5327 | /* This is a name=value entry. */ | |
5328 | is_supported = PACKET_ENABLE; | |
5329 | value = name_end + 1; | |
5330 | *name_end = '\0'; | |
5331 | } | |
5332 | else | |
5333 | { | |
5334 | value = NULL; | |
5335 | switch (end[-1]) | |
5336 | { | |
5337 | case '+': | |
5338 | is_supported = PACKET_ENABLE; | |
5339 | break; | |
5340 | ||
5341 | case '-': | |
5342 | is_supported = PACKET_DISABLE; | |
5343 | break; | |
5344 | ||
5345 | case '?': | |
5346 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5347 | break; | |
5348 | ||
5349 | default: | |
3e43a32a MS |
5350 | warning (_("unrecognized item \"%s\" " |
5351 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5352 | continue; |
5353 | } | |
5354 | end[-1] = '\0'; | |
5355 | } | |
5356 | ||
5357 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5358 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5359 | { | |
5360 | const struct protocol_feature *feature; | |
5361 | ||
5362 | seen[i] = 1; | |
5363 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5364 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5365 | break; |
5366 | } | |
5367 | } | |
5368 | ||
5369 | /* If we increased the packet size, make sure to increase the global | |
5370 | buffer size also. We delay this until after parsing the entire | |
5371 | qSupported packet, because this is the same buffer we were | |
5372 | parsing. */ | |
5373 | if (rs->buf_size < rs->explicit_packet_size) | |
5374 | { | |
5375 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 5376 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
5377 | } |
5378 | ||
5379 | /* Handle the defaults for unmentioned features. */ | |
5380 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5381 | if (!seen[i]) | |
5382 | { | |
5383 | const struct protocol_feature *feature; | |
5384 | ||
5385 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5386 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5387 | } |
5388 | } | |
5389 | ||
048094ac PA |
5390 | /* Serial QUIT handler for the remote serial descriptor. |
5391 | ||
5392 | Defers handling a Ctrl-C until we're done with the current | |
5393 | command/response packet sequence, unless: | |
5394 | ||
5395 | - We're setting up the connection. Don't send a remote interrupt | |
5396 | request, as we're not fully synced yet. Quit immediately | |
5397 | instead. | |
5398 | ||
5399 | - The target has been resumed in the foreground | |
223ffa71 | 5400 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5401 | packet, and we're blocked waiting for the stop reply, thus a |
5402 | Ctrl-C should be immediately sent to the target. | |
5403 | ||
5404 | - We get a second Ctrl-C while still within the same serial read or | |
5405 | write. In that case the serial is seemingly wedged --- offer to | |
5406 | quit/disconnect. | |
5407 | ||
5408 | - We see a second Ctrl-C without target response, after having | |
5409 | previously interrupted the target. In that case the target/stub | |
5410 | is probably wedged --- offer to quit/disconnect. | |
5411 | */ | |
5412 | ||
6b8edb51 PA |
5413 | void |
5414 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5415 | { |
5416 | struct remote_state *rs = get_remote_state (); | |
5417 | ||
5418 | if (check_quit_flag ()) | |
5419 | { | |
5420 | /* If we're starting up, we're not fully synced yet. Quit | |
5421 | immediately. */ | |
5422 | if (rs->starting_up) | |
5423 | quit (); | |
5424 | else if (rs->got_ctrlc_during_io) | |
5425 | { | |
5426 | if (query (_("The target is not responding to GDB commands.\n" | |
5427 | "Stop debugging it? "))) | |
5428 | remote_unpush_and_throw (); | |
5429 | } | |
5430 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5431 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5432 | interrupt_query (); |
5433 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5434 | an interrupt request. */ | |
223ffa71 | 5435 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5436 | target_interrupt (); |
048094ac PA |
5437 | else |
5438 | rs->got_ctrlc_during_io = 1; | |
5439 | } | |
5440 | } | |
5441 | ||
6b8edb51 PA |
5442 | /* The remote_target that is current while the quit handler is |
5443 | overridden with remote_serial_quit_handler. */ | |
5444 | static remote_target *curr_quit_handler_target; | |
5445 | ||
5446 | static void | |
5447 | remote_serial_quit_handler () | |
5448 | { | |
5449 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5450 | } | |
5451 | ||
78a095c3 JK |
5452 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
5453 | on it so remove them first. */ | |
5454 | ||
5455 | static void | |
5456 | remote_unpush_target (void) | |
5457 | { | |
915ef8b1 | 5458 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 5459 | } |
be2a5f71 | 5460 | |
048094ac PA |
5461 | static void |
5462 | remote_unpush_and_throw (void) | |
5463 | { | |
5464 | remote_unpush_target (); | |
5465 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
5466 | } | |
5467 | ||
f6ac5f3d PA |
5468 | void |
5469 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5470 | { |
6b8edb51 | 5471 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5472 | |
c906108c | 5473 | if (name == 0) |
8a3fe4f8 | 5474 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5475 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5476 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5477 | |
2d717e4f | 5478 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5479 | Ask this question first, before target_preopen has a chance to kill |
5480 | anything. */ | |
6b8edb51 | 5481 | if (curr_remote != NULL && !have_inferiors ()) |
2d717e4f | 5482 | { |
78a095c3 JK |
5483 | if (from_tty |
5484 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5485 | error (_("Still connected.")); |
5486 | } | |
5487 | ||
78a095c3 | 5488 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5489 | target_preopen (from_tty); |
5490 | ||
ad9a8f3f | 5491 | remote_fileio_reset (); |
1dd41f16 NS |
5492 | reopen_exec_file (); |
5493 | reread_symbols (); | |
5494 | ||
6b8edb51 PA |
5495 | remote_target *remote |
5496 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5497 | target_ops_up target_holder (remote); | |
5498 | ||
5499 | remote_state *rs = remote->get_remote_state (); | |
5500 | ||
5501 | /* See FIXME above. */ | |
5502 | if (!target_async_permitted) | |
5503 | rs->wait_forever_enabled_p = 1; | |
5504 | ||
5d93a237 TT |
5505 | rs->remote_desc = remote_serial_open (name); |
5506 | if (!rs->remote_desc) | |
c906108c SS |
5507 | perror_with_name (name); |
5508 | ||
5509 | if (baud_rate != -1) | |
5510 | { | |
5d93a237 | 5511 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5512 | { |
9b74d5d3 KB |
5513 | /* The requested speed could not be set. Error out to |
5514 | top level after closing remote_desc. Take care to | |
5515 | set remote_desc to NULL to avoid closing remote_desc | |
5516 | more than once. */ | |
5d93a237 TT |
5517 | serial_close (rs->remote_desc); |
5518 | rs->remote_desc = NULL; | |
c906108c SS |
5519 | perror_with_name (name); |
5520 | } | |
5521 | } | |
5522 | ||
236af5e3 | 5523 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5524 | serial_raw (rs->remote_desc); |
c906108c SS |
5525 | |
5526 | /* If there is something sitting in the buffer we might take it as a | |
5527 | response to a command, which would be bad. */ | |
5d93a237 | 5528 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5529 | |
5530 | if (from_tty) | |
5531 | { | |
5532 | puts_filtered ("Remote debugging using "); | |
5533 | puts_filtered (name); | |
5534 | puts_filtered ("\n"); | |
5535 | } | |
d9f719f1 | 5536 | |
6b8edb51 PA |
5537 | /* Switch to using the remote target now. */ |
5538 | push_target (remote); | |
5539 | /* The target stack owns the target now. */ | |
5540 | target_holder.release (); | |
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 | |
74531fed PA |
5586 | /* Start afresh. */ |
5587 | init_thread_list (); | |
5588 | ||
36918e70 | 5589 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5590 | target (we'd otherwise be in an inconsistent state) and then |
5591 | propogate the error on up the exception chain. This ensures that | |
5592 | the caller doesn't stumble along blindly assuming that the | |
5593 | function succeeded. The CLI doesn't have this problem but other | |
5594 | UI's, such as MI do. | |
36918e70 AC |
5595 | |
5596 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5597 | this function should return an error indication letting the | |
ce2826aa | 5598 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5599 | ``target remote'' is directly wired to this function making that |
5600 | impossible. On a positive note, the CLI side of this problem has | |
5601 | been fixed - the function set_cmd_context() makes it possible for | |
5602 | all the ``target ....'' commands to share a common callback | |
5603 | function. See cli-dump.c. */ | |
109c3e39 | 5604 | { |
2d717e4f | 5605 | |
492d29ea | 5606 | TRY |
04bd08de | 5607 | { |
6b8edb51 | 5608 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5609 | } |
492d29ea | 5610 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5611 | { |
c8d104ad PA |
5612 | /* Pop the partially set up target - unless something else did |
5613 | already before throwing the exception. */ | |
6b8edb51 | 5614 | if (ex.error != TARGET_CLOSE_ERROR) |
78a095c3 | 5615 | remote_unpush_target (); |
109c3e39 AC |
5616 | throw_exception (ex); |
5617 | } | |
492d29ea | 5618 | END_CATCH |
109c3e39 | 5619 | } |
c906108c | 5620 | |
6b8edb51 | 5621 | remote_btrace_reset (rs); |
f4abbc16 | 5622 | |
c6ebd6cf | 5623 | if (target_async_permitted) |
6b8edb51 | 5624 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5625 | } |
5626 | ||
de0d863e DB |
5627 | /* Detach the specified process. */ |
5628 | ||
6b8edb51 PA |
5629 | void |
5630 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5631 | { |
5632 | struct remote_state *rs = get_remote_state (); | |
5633 | ||
5634 | if (remote_multi_process_p (rs)) | |
5635 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5636 | else | |
5637 | strcpy (rs->buf, "D"); | |
5638 | ||
5639 | putpkt (rs->buf); | |
5640 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5641 | ||
5642 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5643 | ; | |
5644 | else if (rs->buf[0] == '\0') | |
5645 | error (_("Remote doesn't know how to detach")); | |
5646 | else | |
5647 | error (_("Can't detach process.")); | |
5648 | } | |
5649 | ||
5650 | /* This detaches a program to which we previously attached, using | |
5651 | inferior_ptid to identify the process. After this is done, GDB | |
5652 | can be used to debug some other program. We better not have left | |
5653 | any breakpoints in the target program or it'll die when it hits | |
5654 | one. */ | |
c906108c | 5655 | |
6b8edb51 PA |
5656 | void |
5657 | remote_target::remote_detach_1 (int from_tty, inferior *inf) | |
c906108c | 5658 | { |
82f73884 | 5659 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5660 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5661 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5662 | int is_fork_parent; | |
c906108c | 5663 | |
2d717e4f DJ |
5664 | if (!target_has_execution) |
5665 | error (_("No process to detach from.")); | |
5666 | ||
0f48b757 | 5667 | target_announce_detach (from_tty); |
7cee1e54 | 5668 | |
c906108c | 5669 | /* Tell the remote target to detach. */ |
de0d863e | 5670 | remote_detach_pid (pid); |
82f73884 | 5671 | |
8020350c DB |
5672 | /* Exit only if this is the only active inferior. */ |
5673 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5674 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5675 | |
de0d863e DB |
5676 | /* Check to see if we are detaching a fork parent. Note that if we |
5677 | are detaching a fork child, tp == NULL. */ | |
5678 | is_fork_parent = (tp != NULL | |
5679 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5680 | ||
5681 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5682 | breakpoints that should be available for the followed inferior. */ | |
5683 | if (!is_fork_parent) | |
f67c0c91 | 5684 | { |
249b5733 PA |
5685 | /* Save the pid as a string before mourning, since that will |
5686 | unpush the remote target, and we need the string after. */ | |
5687 | std::string infpid = target_pid_to_str (pid_to_ptid (pid)); | |
f67c0c91 SDJ |
5688 | |
5689 | target_mourn_inferior (inferior_ptid); | |
5690 | if (print_inferior_events) | |
5691 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5692 | inf->num, infpid.c_str ()); | |
5693 | } | |
de0d863e DB |
5694 | else |
5695 | { | |
5696 | inferior_ptid = null_ptid; | |
5697 | detach_inferior (pid); | |
5698 | } | |
2d717e4f DJ |
5699 | } |
5700 | ||
f6ac5f3d PA |
5701 | void |
5702 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5703 | { |
6e1e1966 | 5704 | remote_detach_1 (from_tty, inf); |
2d717e4f DJ |
5705 | } |
5706 | ||
f6ac5f3d PA |
5707 | void |
5708 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5709 | { |
6e1e1966 | 5710 | remote_detach_1 (from_tty, inf); |
de0d863e DB |
5711 | } |
5712 | ||
5713 | /* Target follow-fork function for remote targets. On entry, and | |
5714 | at return, the current inferior is the fork parent. | |
5715 | ||
5716 | Note that although this is currently only used for extended-remote, | |
5717 | it is named remote_follow_fork in anticipation of using it for the | |
5718 | remote target as well. */ | |
5719 | ||
f6ac5f3d PA |
5720 | int |
5721 | remote_target::follow_fork (int follow_child, int detach_fork) | |
de0d863e DB |
5722 | { |
5723 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5724 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5725 | |
c269dbdb DB |
5726 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5727 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5728 | { |
5729 | /* When following the parent and detaching the child, we detach | |
5730 | the child here. For the case of following the child and | |
5731 | detaching the parent, the detach is done in the target- | |
5732 | independent follow fork code in infrun.c. We can't use | |
5733 | target_detach when detaching an unfollowed child because | |
5734 | the client side doesn't know anything about the child. */ | |
5735 | if (detach_fork && !follow_child) | |
5736 | { | |
5737 | /* Detach the fork child. */ | |
5738 | ptid_t child_ptid; | |
5739 | pid_t child_pid; | |
5740 | ||
5741 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5742 | child_pid = ptid_get_pid (child_ptid); | |
5743 | ||
5744 | remote_detach_pid (child_pid); | |
de0d863e DB |
5745 | } |
5746 | } | |
5747 | return 0; | |
c906108c SS |
5748 | } |
5749 | ||
94585166 DB |
5750 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5751 | in the program space of the new inferior. On entry and at return the | |
5752 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5753 | inferior, which may be the same as the exec'ing inferior unless | |
5754 | follow-exec-mode is "new". */ | |
5755 | ||
f6ac5f3d PA |
5756 | void |
5757 | remote_target::follow_exec (struct inferior *inf, char *execd_pathname) | |
94585166 DB |
5758 | { |
5759 | /* We know that this is a target file name, so if it has the "target:" | |
5760 | prefix we strip it off before saving it in the program space. */ | |
5761 | if (is_target_filename (execd_pathname)) | |
5762 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5763 | ||
5764 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5765 | } | |
5766 | ||
6ad8ae5c DJ |
5767 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5768 | ||
f6ac5f3d PA |
5769 | void |
5770 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5771 | { |
43ff13b4 | 5772 | if (args) |
2d717e4f | 5773 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5774 | |
8020350c DB |
5775 | /* Make sure we unpush even the extended remote targets. Calling |
5776 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5777 | unpush if there is more than one inferior left. */ | |
f6ac5f3d | 5778 | unpush_target (this); |
8020350c | 5779 | generic_mourn_inferior (); |
2d717e4f | 5780 | |
43ff13b4 JM |
5781 | if (from_tty) |
5782 | puts_filtered ("Ending remote debugging.\n"); | |
5783 | } | |
5784 | ||
2d717e4f DJ |
5785 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5786 | be chatty about it. */ | |
5787 | ||
f6ac5f3d PA |
5788 | void |
5789 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5790 | { |
5791 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5792 | int pid; |
96ef3384 | 5793 | char *wait_status = NULL; |
2d717e4f | 5794 | |
74164c56 | 5795 | pid = parse_pid_to_attach (args); |
2d717e4f | 5796 | |
74164c56 JK |
5797 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5798 | way as in other targets. */ | |
2d717e4f | 5799 | |
4082afcc | 5800 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5801 | error (_("This target does not support attaching to a process")); |
5802 | ||
7cee1e54 PA |
5803 | if (from_tty) |
5804 | { | |
5805 | char *exec_file = get_exec_file (0); | |
5806 | ||
5807 | if (exec_file) | |
5808 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5809 | target_pid_to_str (pid_to_ptid (pid))); | |
5810 | else | |
5811 | printf_unfiltered (_("Attaching to %s\n"), | |
5812 | target_pid_to_str (pid_to_ptid (pid))); | |
5813 | ||
5814 | gdb_flush (gdb_stdout); | |
5815 | } | |
5816 | ||
bba74b36 | 5817 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5818 | putpkt (rs->buf); |
5819 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5820 | ||
4082afcc PA |
5821 | switch (packet_ok (rs->buf, |
5822 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5823 | { |
4082afcc | 5824 | case PACKET_OK: |
6efcd9a8 | 5825 | if (!target_is_non_stop_p ()) |
74531fed PA |
5826 | { |
5827 | /* Save the reply for later. */ | |
224c3ddb | 5828 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5829 | strcpy (wait_status, rs->buf); |
5830 | } | |
5831 | else if (strcmp (rs->buf, "OK") != 0) | |
5832 | error (_("Attaching to %s failed with: %s"), | |
5833 | target_pid_to_str (pid_to_ptid (pid)), | |
5834 | rs->buf); | |
4082afcc PA |
5835 | break; |
5836 | case PACKET_UNKNOWN: | |
5837 | error (_("This target does not support attaching to a process")); | |
5838 | default: | |
5839 | error (_("Attaching to %s failed"), | |
5840 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5841 | } |
2d717e4f | 5842 | |
1b6e6f5c | 5843 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5844 | |
2d717e4f | 5845 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5846 | |
6efcd9a8 | 5847 | if (target_is_non_stop_p ()) |
bad34192 PA |
5848 | { |
5849 | struct thread_info *thread; | |
79d7f229 | 5850 | |
bad34192 | 5851 | /* Get list of threads. */ |
f6ac5f3d | 5852 | update_thread_list (); |
82f73884 | 5853 | |
bad34192 PA |
5854 | thread = first_thread_of_process (pid); |
5855 | if (thread) | |
5856 | inferior_ptid = thread->ptid; | |
5857 | else | |
5858 | inferior_ptid = pid_to_ptid (pid); | |
5859 | ||
5860 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5861 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5862 | } |
74531fed | 5863 | else |
bad34192 PA |
5864 | { |
5865 | /* Now, if we have thread information, update inferior_ptid. */ | |
5866 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5867 | ||
5868 | /* Add the main thread to the thread list. */ | |
00aecdcf PA |
5869 | thread_info *thr = add_thread_silent (inferior_ptid); |
5870 | /* Don't consider the thread stopped until we've processed the | |
5871 | saved stop reply. */ | |
5872 | set_executing (thr->ptid, true); | |
bad34192 | 5873 | } |
c0a2216e | 5874 | |
96ef3384 UW |
5875 | /* Next, if the target can specify a description, read it. We do |
5876 | this before anything involving memory or registers. */ | |
5877 | target_find_description (); | |
5878 | ||
6efcd9a8 | 5879 | if (!target_is_non_stop_p ()) |
74531fed PA |
5880 | { |
5881 | /* Use the previously fetched status. */ | |
5882 | gdb_assert (wait_status != NULL); | |
5883 | ||
5884 | if (target_can_async_p ()) | |
5885 | { | |
722247f1 | 5886 | struct notif_event *reply |
6b8edb51 | 5887 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 5888 | |
722247f1 | 5889 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5890 | |
6a3753b3 | 5891 | target_async (1); |
74531fed PA |
5892 | } |
5893 | else | |
5894 | { | |
5895 | gdb_assert (wait_status != NULL); | |
5896 | strcpy (rs->buf, wait_status); | |
5897 | rs->cached_wait_status = 1; | |
5898 | } | |
5899 | } | |
5900 | else | |
5901 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5902 | } |
5903 | ||
b9c1d481 AS |
5904 | /* Implementation of the to_post_attach method. */ |
5905 | ||
f6ac5f3d PA |
5906 | void |
5907 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5908 | { |
6efcd9a8 PA |
5909 | /* Get text, data & bss offsets. */ |
5910 | get_offsets (); | |
5911 | ||
b9c1d481 AS |
5912 | /* In certain cases GDB might not have had the chance to start |
5913 | symbol lookup up until now. This could happen if the debugged | |
5914 | binary is not using shared libraries, the vsyscall page is not | |
5915 | present (on Linux) and the binary itself hadn't changed since the | |
5916 | debugging process was started. */ | |
5917 | if (symfile_objfile != NULL) | |
5918 | remote_check_symbols(); | |
5919 | } | |
5920 | ||
c906108c | 5921 | \f |
506fb367 DJ |
5922 | /* Check for the availability of vCont. This function should also check |
5923 | the response. */ | |
c906108c | 5924 | |
6b8edb51 PA |
5925 | void |
5926 | remote_target::remote_vcont_probe () | |
c906108c | 5927 | { |
6b8edb51 | 5928 | remote_state *rs = get_remote_state (); |
2e9f7625 | 5929 | char *buf; |
6d820c5c | 5930 | |
2e9f7625 DJ |
5931 | strcpy (rs->buf, "vCont?"); |
5932 | putpkt (rs->buf); | |
6d820c5c | 5933 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5934 | buf = rs->buf; |
c906108c | 5935 | |
506fb367 | 5936 | /* Make sure that the features we assume are supported. */ |
61012eef | 5937 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5938 | { |
5939 | char *p = &buf[5]; | |
750ce8d1 | 5940 | int support_c, support_C; |
506fb367 | 5941 | |
750ce8d1 YQ |
5942 | rs->supports_vCont.s = 0; |
5943 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5944 | support_c = 0; |
5945 | support_C = 0; | |
d458bd84 | 5946 | rs->supports_vCont.t = 0; |
c1e36e3e | 5947 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5948 | while (p && *p == ';') |
5949 | { | |
5950 | p++; | |
5951 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5952 | rs->supports_vCont.s = 1; |
506fb367 | 5953 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5954 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5955 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5956 | support_c = 1; | |
5957 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5958 | support_C = 1; | |
74531fed | 5959 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5960 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5961 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5962 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5963 | |
5964 | p = strchr (p, ';'); | |
5965 | } | |
c906108c | 5966 | |
750ce8d1 YQ |
5967 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5968 | BUF will make packet_ok disable the packet. */ | |
5969 | if (!support_c || !support_C) | |
506fb367 DJ |
5970 | buf[0] = 0; |
5971 | } | |
c906108c | 5972 | |
444abaca | 5973 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5974 | } |
c906108c | 5975 | |
0d8f58ca PA |
5976 | /* Helper function for building "vCont" resumptions. Write a |
5977 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5978 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5979 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5980 | resumed thread should be single-stepped and/or signalled. If PTID | |
5981 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5982 | represents a process, then all threads of the process are resumed; | |
5983 | the thread to be stepped and/or signalled is given in the global | |
5984 | INFERIOR_PTID. */ | |
5985 | ||
6b8edb51 PA |
5986 | char * |
5987 | remote_target::append_resumption (char *p, char *endp, | |
5988 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
5989 | { |
5990 | struct remote_state *rs = get_remote_state (); | |
5991 | ||
a493e3e2 | 5992 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5993 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5994 | else if (step |
5995 | /* GDB is willing to range step. */ | |
5996 | && use_range_stepping | |
5997 | /* Target supports range stepping. */ | |
5998 | && rs->supports_vCont.r | |
5999 | /* We don't currently support range stepping multiple | |
6000 | threads with a wildcard (though the protocol allows it, | |
6001 | so stubs shouldn't make an active effort to forbid | |
6002 | it). */ | |
6003 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
6004 | { | |
6005 | struct thread_info *tp; | |
6006 | ||
6007 | if (ptid_equal (ptid, minus_one_ptid)) | |
6008 | { | |
6009 | /* If we don't know about the target thread's tid, then | |
6010 | we're resuming magic_null_ptid (see caller). */ | |
6011 | tp = find_thread_ptid (magic_null_ptid); | |
6012 | } | |
6013 | else | |
6014 | tp = find_thread_ptid (ptid); | |
6015 | gdb_assert (tp != NULL); | |
6016 | ||
6017 | if (tp->control.may_range_step) | |
6018 | { | |
6019 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6020 | ||
6021 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6022 | phex_nz (tp->control.step_range_start, | |
6023 | addr_size), | |
6024 | phex_nz (tp->control.step_range_end, | |
6025 | addr_size)); | |
6026 | } | |
6027 | else | |
6028 | p += xsnprintf (p, endp - p, ";s"); | |
6029 | } | |
0d8f58ca PA |
6030 | else if (step) |
6031 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6032 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6033 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6034 | else | |
6035 | p += xsnprintf (p, endp - p, ";c"); | |
6036 | ||
6037 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
6038 | { | |
6039 | ptid_t nptid; | |
6040 | ||
6041 | /* All (-1) threads of process. */ | |
ba348170 | 6042 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
6043 | |
6044 | p += xsnprintf (p, endp - p, ":"); | |
6045 | p = write_ptid (p, endp, nptid); | |
6046 | } | |
6047 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
6048 | { | |
6049 | p += xsnprintf (p, endp - p, ":"); | |
6050 | p = write_ptid (p, endp, ptid); | |
6051 | } | |
6052 | ||
6053 | return p; | |
6054 | } | |
6055 | ||
799a2abe PA |
6056 | /* Clear the thread's private info on resume. */ |
6057 | ||
6058 | static void | |
6059 | resume_clear_thread_private_info (struct thread_info *thread) | |
6060 | { | |
6061 | if (thread->priv != NULL) | |
6062 | { | |
7aabaf9d SM |
6063 | remote_thread_info *priv = get_remote_thread_info (thread); |
6064 | ||
6065 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6066 | priv->watch_data_address = 0; | |
799a2abe PA |
6067 | } |
6068 | } | |
6069 | ||
e5ef252a PA |
6070 | /* Append a vCont continue-with-signal action for threads that have a |
6071 | non-zero stop signal. */ | |
6072 | ||
6b8edb51 PA |
6073 | char * |
6074 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6075 | ptid_t ptid) | |
e5ef252a PA |
6076 | { |
6077 | struct thread_info *thread; | |
6078 | ||
034f788c | 6079 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
6080 | if (ptid_match (thread->ptid, ptid) |
6081 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 6082 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6083 | { |
6084 | p = append_resumption (p, endp, thread->ptid, | |
6085 | 0, thread->suspend.stop_signal); | |
6086 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6087 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6088 | } |
6089 | ||
6090 | return p; | |
6091 | } | |
6092 | ||
7b68ffbb PA |
6093 | /* Set the target running, using the packets that use Hc |
6094 | (c/s/C/S). */ | |
6095 | ||
6b8edb51 PA |
6096 | void |
6097 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6098 | gdb_signal siggnal) | |
7b68ffbb PA |
6099 | { |
6100 | struct remote_state *rs = get_remote_state (); | |
6101 | struct thread_info *thread; | |
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. */ | |
6109 | if (ptid_equal (ptid, minus_one_ptid)) | |
6110 | set_continue_thread (any_thread_ptid); | |
6111 | else | |
6112 | set_continue_thread (ptid); | |
6113 | ||
6114 | ALL_NON_EXITED_THREADS (thread) | |
6115 | resume_clear_thread_private_info (thread); | |
6116 | ||
6117 | buf = rs->buf; | |
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 | |
82f73884 PA |
6173 | p = rs->buf; |
6174 | endp = rs->buf + get_remote_packet_size (); | |
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 | ||
79d7f229 | 6182 | if (ptid_equal (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 | } |
0d8f58ca | 6190 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
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 | |
82f73884 PA |
6215 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
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. */ | |
6223 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6224 | if (strcmp (rs->buf, "OK") != 0) | |
6225 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
6226 | } | |
6227 | ||
506fb367 | 6228 | return 1; |
c906108c | 6229 | } |
43ff13b4 | 6230 | |
506fb367 DJ |
6231 | /* Tell the remote machine to resume. */ |
6232 | ||
f6ac5f3d PA |
6233 | void |
6234 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6235 | { |
d01949b6 | 6236 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6237 | |
85ad3aaf PA |
6238 | /* When connected in non-stop mode, the core resumes threads |
6239 | individually. Resuming remote threads directly in target_resume | |
6240 | would thus result in sending one packet per thread. Instead, to | |
6241 | minimize roundtrip latency, here we just store the resume | |
6242 | request; the actual remote resumption will be done in | |
6243 | target_commit_resume / remote_commit_resume, where we'll be able | |
6244 | to do vCont action coalescing. */ | |
f6ac5f3d | 6245 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6246 | { |
7aabaf9d | 6247 | remote_thread_info *remote_thr; |
85ad3aaf PA |
6248 | |
6249 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
7aabaf9d | 6250 | remote_thr = get_remote_thread_info (inferior_ptid); |
85ad3aaf | 6251 | else |
7aabaf9d SM |
6252 | remote_thr = get_remote_thread_info (ptid); |
6253 | ||
85ad3aaf PA |
6254 | remote_thr->last_resume_step = step; |
6255 | remote_thr->last_resume_sig = siggnal; | |
6256 | return; | |
6257 | } | |
6258 | ||
722247f1 YQ |
6259 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6260 | (explained in remote-notif.c:handle_notification) so | |
6261 | remote_notif_process is not called. We need find a place where | |
6262 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6263 | before resuming inferior, because inferior was stopped and no RSP | |
6264 | traffic at that moment. */ | |
6efcd9a8 | 6265 | if (!target_is_non_stop_p ()) |
5965e028 | 6266 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6267 | |
f6ac5f3d | 6268 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6269 | |
7b68ffbb PA |
6270 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6271 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6272 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6273 | |
2acceee2 | 6274 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6275 | with the event loop. NOTE: this is the one place where all the |
6276 | execution commands end up. We could alternatively do this in each | |
23860348 | 6277 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6278 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6279 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6280 | NOT asynchronously. */ |
362646f5 | 6281 | if (target_can_async_p ()) |
6a3753b3 | 6282 | target_async (1); |
e24a49d8 PA |
6283 | |
6284 | /* We've just told the target to resume. The remote server will | |
6285 | wait for the inferior to stop, and then send a stop reply. In | |
6286 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6287 | because the stub wouldn't be ready to process it. This applies |
6288 | only to the base all-stop protocol, however. In non-stop (which | |
6289 | only supports vCont), the stub replies with an "OK", and is | |
6290 | immediate able to process further serial input. */ | |
6efcd9a8 | 6291 | if (!target_is_non_stop_p ()) |
74531fed | 6292 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6293 | } |
85ad3aaf | 6294 | |
85ad3aaf PA |
6295 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6296 | ||
6297 | /* Private per-inferior info for target remote processes. */ | |
6298 | ||
089354bb | 6299 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6300 | { |
6301 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6302 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6303 | }; |
6304 | ||
089354bb SM |
6305 | /* Get the remote private inferior data associated to INF. */ |
6306 | ||
6307 | static remote_inferior * | |
6308 | get_remote_inferior (inferior *inf) | |
6309 | { | |
6310 | if (inf->priv == NULL) | |
6311 | inf->priv.reset (new remote_inferior); | |
6312 | ||
6313 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6314 | } | |
6315 | ||
f5db4863 | 6316 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6317 | outgoing packet buffer. This is used to send multiple vCont |
6318 | packets if we have more actions than would fit a single packet. */ | |
6319 | ||
f5db4863 | 6320 | class vcont_builder |
85ad3aaf | 6321 | { |
f5db4863 | 6322 | public: |
6b8edb51 PA |
6323 | explicit vcont_builder (remote_target *remote) |
6324 | : m_remote (remote) | |
f5db4863 PA |
6325 | { |
6326 | restart (); | |
6327 | } | |
6328 | ||
6329 | void flush (); | |
6330 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6331 | ||
6332 | private: | |
6333 | void restart (); | |
6334 | ||
6b8edb51 PA |
6335 | /* The remote target. */ |
6336 | remote_target *m_remote; | |
6337 | ||
85ad3aaf PA |
6338 | /* Pointer to the first action. P points here if no action has been |
6339 | appended yet. */ | |
f5db4863 | 6340 | char *m_first_action; |
85ad3aaf PA |
6341 | |
6342 | /* Where the next action will be appended. */ | |
f5db4863 | 6343 | char *m_p; |
85ad3aaf PA |
6344 | |
6345 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6346 | char *m_endp; |
85ad3aaf PA |
6347 | }; |
6348 | ||
6349 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6350 | ||
f5db4863 PA |
6351 | void |
6352 | vcont_builder::restart () | |
85ad3aaf | 6353 | { |
6b8edb51 | 6354 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6355 | |
f5db4863 | 6356 | m_p = rs->buf; |
6b8edb51 | 6357 | m_endp = rs->buf + m_remote->get_remote_packet_size (); |
f5db4863 PA |
6358 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6359 | m_first_action = m_p; | |
85ad3aaf PA |
6360 | } |
6361 | ||
6362 | /* If the vCont packet being built has any action, send it to the | |
6363 | remote end. */ | |
6364 | ||
f5db4863 PA |
6365 | void |
6366 | vcont_builder::flush () | |
85ad3aaf PA |
6367 | { |
6368 | struct remote_state *rs; | |
6369 | ||
f5db4863 | 6370 | if (m_p == m_first_action) |
85ad3aaf PA |
6371 | return; |
6372 | ||
6b8edb51 PA |
6373 | rs = m_remote->get_remote_state (); |
6374 | m_remote->putpkt (rs->buf); | |
6375 | m_remote->getpkt (&rs->buf, &rs->buf_size, 0); | |
85ad3aaf PA |
6376 | if (strcmp (rs->buf, "OK") != 0) |
6377 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
6378 | } | |
6379 | ||
6380 | /* The largest action is range-stepping, with its two addresses. This | |
6381 | is more than sufficient. If a new, bigger action is created, it'll | |
6382 | quickly trigger a failed assertion in append_resumption (and we'll | |
6383 | just bump this). */ | |
6384 | #define MAX_ACTION_SIZE 200 | |
6385 | ||
6386 | /* Append a new vCont action in the outgoing packet being built. If | |
6387 | the action doesn't fit the packet along with previous actions, push | |
6388 | what we've got so far to the remote end and start over a new vCont | |
6389 | packet (with the new action). */ | |
6390 | ||
f5db4863 PA |
6391 | void |
6392 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6393 | { |
6394 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6395 | |
6b8edb51 PA |
6396 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6397 | ptid, step, siggnal); | |
85ad3aaf PA |
6398 | |
6399 | /* Check whether this new action would fit in the vCont packet along | |
6400 | with previous actions. If not, send what we've got so far and | |
6401 | start a new vCont packet. */ | |
f5db4863 PA |
6402 | size_t rsize = endp - buf; |
6403 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6404 | { |
f5db4863 PA |
6405 | flush (); |
6406 | restart (); | |
85ad3aaf PA |
6407 | |
6408 | /* Should now fit. */ | |
f5db4863 | 6409 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6410 | } |
6411 | ||
f5db4863 PA |
6412 | memcpy (m_p, buf, rsize); |
6413 | m_p += rsize; | |
6414 | *m_p = '\0'; | |
85ad3aaf PA |
6415 | } |
6416 | ||
6417 | /* to_commit_resume implementation. */ | |
6418 | ||
f6ac5f3d PA |
6419 | void |
6420 | remote_target::commit_resume () | |
85ad3aaf | 6421 | { |
85ad3aaf PA |
6422 | struct inferior *inf; |
6423 | struct thread_info *tp; | |
6424 | int any_process_wildcard; | |
6425 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6426 | |
6427 | /* If connected in all-stop mode, we'd send the remote resume | |
6428 | request directly from remote_resume. Likewise if | |
6429 | reverse-debugging, as there are no defined vCont actions for | |
6430 | reverse execution. */ | |
f6ac5f3d | 6431 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6432 | return; |
6433 | ||
6434 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6435 | instead of resuming all threads of each process individually. | |
6436 | However, if any thread of a process must remain halted, we can't | |
6437 | send wildcard resumes and must send one action per thread. | |
6438 | ||
6439 | Care must be taken to not resume threads/processes the server | |
6440 | side already told us are stopped, but the core doesn't know about | |
6441 | yet, because the events are still in the vStopped notification | |
6442 | queue. For example: | |
6443 | ||
6444 | #1 => vCont s:p1.1;c | |
6445 | #2 <= OK | |
6446 | #3 <= %Stopped T05 p1.1 | |
6447 | #4 => vStopped | |
6448 | #5 <= T05 p1.2 | |
6449 | #6 => vStopped | |
6450 | #7 <= OK | |
6451 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6452 | #9 => vCont s:p1.1;c | |
6453 | ||
6454 | The last vCont above would resume thread p1.2 by mistake, because | |
6455 | the server has no idea that the event for p1.2 had not been | |
6456 | handled yet. | |
6457 | ||
6458 | The server side must similarly ignore resume actions for the | |
6459 | thread that has a pending %Stopped notification (and any other | |
6460 | threads with events pending), until GDB acks the notification | |
6461 | with vStopped. Otherwise, e.g., the following case is | |
6462 | mishandled: | |
6463 | ||
6464 | #1 => g (or any other packet) | |
6465 | #2 <= [registers] | |
6466 | #3 <= %Stopped T05 p1.2 | |
6467 | #4 => vCont s:p1.1;c | |
6468 | #5 <= OK | |
6469 | ||
6470 | Above, the server must not resume thread p1.2. GDB can't know | |
6471 | that p1.2 stopped until it acks the %Stopped notification, and | |
6472 | since from GDB's perspective all threads should be running, it | |
6473 | sends a "c" action. | |
6474 | ||
6475 | Finally, special care must also be given to handling fork/vfork | |
6476 | events. A (v)fork event actually tells us that two processes | |
6477 | stopped -- the parent and the child. Until we follow the fork, | |
6478 | we must not resume the child. Therefore, if we have a pending | |
6479 | fork follow, we must not send a global wildcard resume action | |
6480 | (vCont;c). We can still send process-wide wildcards though. */ | |
6481 | ||
6482 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6483 | may_global_wildcard_vcont = 1; | |
6484 | ||
6485 | /* And assume every process is individually wildcard-able too. */ | |
6486 | ALL_NON_EXITED_INFERIORS (inf) | |
6487 | { | |
089354bb SM |
6488 | remote_inferior *priv = get_remote_inferior (inf); |
6489 | ||
6490 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6491 | } |
6492 | ||
6493 | /* Check for any pending events (not reported or processed yet) and | |
6494 | disable process and global wildcard resumes appropriately. */ | |
6495 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6496 | ||
6497 | ALL_NON_EXITED_THREADS (tp) | |
6498 | { | |
6499 | /* If a thread of a process is not meant to be resumed, then we | |
6500 | can't wildcard that process. */ | |
6501 | if (!tp->executing) | |
6502 | { | |
089354bb | 6503 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6504 | |
6505 | /* And if we can't wildcard a process, we can't wildcard | |
6506 | everything either. */ | |
6507 | may_global_wildcard_vcont = 0; | |
6508 | continue; | |
6509 | } | |
6510 | ||
6511 | /* If a thread is the parent of an unfollowed fork, then we | |
6512 | can't do a global wildcard, as that would resume the fork | |
6513 | child. */ | |
6514 | if (is_pending_fork_parent_thread (tp)) | |
6515 | may_global_wildcard_vcont = 0; | |
6516 | } | |
6517 | ||
6518 | /* Now let's build the vCont packet(s). Actions must be appended | |
6519 | from narrower to wider scopes (thread -> process -> global). If | |
6520 | we end up with too many actions for a single packet vcont_builder | |
6521 | flushes the current vCont packet to the remote side and starts a | |
6522 | new one. */ | |
6b8edb51 | 6523 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6524 | |
6525 | /* Threads first. */ | |
6526 | ALL_NON_EXITED_THREADS (tp) | |
6527 | { | |
7aabaf9d | 6528 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6529 | |
6530 | if (!tp->executing || remote_thr->vcont_resumed) | |
6531 | continue; | |
6532 | ||
6533 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6534 | ||
6535 | if (!remote_thr->last_resume_step | |
6536 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6537 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6538 | { |
6539 | /* We'll send a wildcard resume instead. */ | |
6540 | remote_thr->vcont_resumed = 1; | |
6541 | continue; | |
6542 | } | |
6543 | ||
f5db4863 | 6544 | vcont_builder.push_action (tp->ptid, |
85ad3aaf PA |
6545 | remote_thr->last_resume_step, |
6546 | remote_thr->last_resume_sig); | |
6547 | remote_thr->vcont_resumed = 1; | |
6548 | } | |
6549 | ||
6550 | /* Now check whether we can send any process-wide wildcard. This is | |
6551 | to avoid sending a global wildcard in the case nothing is | |
6552 | supposed to be resumed. */ | |
6553 | any_process_wildcard = 0; | |
6554 | ||
6555 | ALL_NON_EXITED_INFERIORS (inf) | |
6556 | { | |
089354bb | 6557 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6558 | { |
6559 | any_process_wildcard = 1; | |
6560 | break; | |
6561 | } | |
6562 | } | |
6563 | ||
6564 | if (any_process_wildcard) | |
6565 | { | |
6566 | /* If all processes are wildcard-able, then send a single "c" | |
6567 | action, otherwise, send an "all (-1) threads of process" | |
6568 | continue action for each running process, if any. */ | |
6569 | if (may_global_wildcard_vcont) | |
6570 | { | |
f5db4863 PA |
6571 | vcont_builder.push_action (minus_one_ptid, |
6572 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6573 | } |
6574 | else | |
6575 | { | |
6576 | ALL_NON_EXITED_INFERIORS (inf) | |
6577 | { | |
089354bb | 6578 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6579 | { |
f5db4863 PA |
6580 | vcont_builder.push_action (pid_to_ptid (inf->pid), |
6581 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6582 | } |
6583 | } | |
6584 | } | |
6585 | } | |
6586 | ||
f5db4863 | 6587 | vcont_builder.flush (); |
85ad3aaf PA |
6588 | } |
6589 | ||
c906108c | 6590 | \f |
43ff13b4 | 6591 | |
74531fed PA |
6592 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6593 | thread, all threads of a remote process, or all threads of all | |
6594 | processes. */ | |
6595 | ||
6b8edb51 PA |
6596 | void |
6597 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6598 | { |
6599 | struct remote_state *rs = get_remote_state (); | |
6600 | char *p = rs->buf; | |
6601 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6602 | |
4082afcc | 6603 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6604 | remote_vcont_probe (); |
74531fed | 6605 | |
d458bd84 | 6606 | if (!rs->supports_vCont.t) |
74531fed PA |
6607 | error (_("Remote server does not support stopping threads")); |
6608 | ||
f91d3df5 PA |
6609 | if (ptid_equal (ptid, minus_one_ptid) |
6610 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6611 | p += xsnprintf (p, endp - p, "vCont;t"); |
6612 | else | |
6613 | { | |
6614 | ptid_t nptid; | |
6615 | ||
74531fed PA |
6616 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6617 | ||
6618 | if (ptid_is_pid (ptid)) | |
6619 | /* All (-1) threads of process. */ | |
ba348170 | 6620 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6621 | else |
6622 | { | |
6623 | /* Small optimization: if we already have a stop reply for | |
6624 | this thread, no use in telling the stub we want this | |
6625 | stopped. */ | |
6626 | if (peek_stop_reply (ptid)) | |
6627 | return; | |
6628 | ||
6629 | nptid = ptid; | |
6630 | } | |
6631 | ||
a9cbf802 | 6632 | write_ptid (p, endp, nptid); |
74531fed PA |
6633 | } |
6634 | ||
6635 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6636 | come in asynchronously by notification. */ | |
6637 | putpkt (rs->buf); | |
6638 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6639 | if (strcmp (rs->buf, "OK") != 0) | |
6640 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
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 (); | |
6673 | char *p = rs->buf; | |
6674 | char *endp = rs->buf + get_remote_packet_size (); | |
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); | |
6681 | getpkt (&rs->buf, &rs->buf_size, 0); | |
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 PA |
6689 | case PACKET_ERROR: |
6690 | error (_("Interrupting target failed: %s"), rs->buf); | |
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 |
917317f4 | 6790 | remote_console_output (char *msg) |
c906108c SS |
6791 | { |
6792 | char *p; | |
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 | |
74531fed PA |
6806 | DEF_VEC_O(cached_reg_t); |
6807 | ||
722247f1 | 6808 | typedef struct stop_reply |
74531fed | 6809 | { |
722247f1 | 6810 | struct notif_event base; |
74531fed | 6811 | |
722247f1 | 6812 | /* The identifier of the thread about this event */ |
74531fed PA |
6813 | ptid_t ptid; |
6814 | ||
340e3c99 | 6815 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6816 | connection, represented by a remote_state object, is closed, |
6817 | all the associated stop_reply events should be released. */ | |
6818 | struct remote_state *rs; | |
6819 | ||
74531fed PA |
6820 | struct target_waitstatus ws; |
6821 | ||
5cd63fda PA |
6822 | /* The architecture associated with the expedited registers. */ |
6823 | gdbarch *arch; | |
6824 | ||
15148d6a PA |
6825 | /* Expedited registers. This makes remote debugging a bit more |
6826 | efficient for those targets that provide critical registers as | |
6827 | part of their normal status mechanism (as another roundtrip to | |
6828 | fetch them is avoided). */ | |
74531fed PA |
6829 | VEC(cached_reg_t) *regcache; |
6830 | ||
f7e6eed5 PA |
6831 | enum target_stop_reason stop_reason; |
6832 | ||
74531fed PA |
6833 | CORE_ADDR watch_data_address; |
6834 | ||
dc146f7c | 6835 | int core; |
722247f1 | 6836 | } *stop_reply_p; |
a744cf53 | 6837 | |
74531fed PA |
6838 | static void |
6839 | stop_reply_xfree (struct stop_reply *r) | |
6840 | { | |
f48ff2a7 | 6841 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6842 | } |
6843 | ||
221e1a37 PA |
6844 | /* Return the length of the stop reply queue. */ |
6845 | ||
6b8edb51 PA |
6846 | int |
6847 | remote_target::stop_reply_queue_length () | |
221e1a37 | 6848 | { |
6b8edb51 | 6849 | remote_state *rs = get_remote_state (); |
953edf2b | 6850 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
6851 | } |
6852 | ||
6b8edb51 PA |
6853 | void |
6854 | remote_notif_stop_parse (remote_target *remote, | |
6855 | struct notif_client *self, char *buf, | |
722247f1 YQ |
6856 | struct notif_event *event) |
6857 | { | |
6b8edb51 | 6858 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
6859 | } |
6860 | ||
6861 | static void | |
6b8edb51 PA |
6862 | remote_notif_stop_ack (remote_target *remote, |
6863 | struct notif_client *self, char *buf, | |
722247f1 YQ |
6864 | struct notif_event *event) |
6865 | { | |
6866 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6867 | ||
6868 | /* acknowledge */ | |
6b8edb51 | 6869 | putpkt (remote, self->ack_command); |
722247f1 YQ |
6870 | |
6871 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6b8edb51 | 6872 | { |
722247f1 YQ |
6873 | /* We got an unknown stop reply. */ |
6874 | error (_("Unknown stop reply")); | |
6b8edb51 | 6875 | } |
722247f1 | 6876 | |
6b8edb51 | 6877 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
6878 | } |
6879 | ||
6880 | static int | |
6b8edb51 PA |
6881 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
6882 | struct notif_client *self) | |
722247f1 YQ |
6883 | { |
6884 | /* We can't get pending events in remote_notif_process for | |
6885 | notification stop, and we have to do this in remote_wait_ns | |
6886 | instead. If we fetch all queued events from stub, remote stub | |
6887 | may exit and we have no chance to process them back in | |
6888 | remote_wait_ns. */ | |
6b8edb51 PA |
6889 | remote_state *rs = remote->get_remote_state (); |
6890 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
6891 | return 0; |
6892 | } | |
6893 | ||
6894 | static void | |
6895 | stop_reply_dtr (struct notif_event *event) | |
6896 | { | |
6897 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6898 | cached_reg_t *reg; |
6899 | int ix; | |
6900 | ||
6901 | for (ix = 0; | |
6902 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6903 | ix++) | |
6904 | xfree (reg->data); | |
722247f1 YQ |
6905 | |
6906 | VEC_free (cached_reg_t, r->regcache); | |
6907 | } | |
6908 | ||
6909 | static struct notif_event * | |
6910 | remote_notif_stop_alloc_reply (void) | |
6911 | { | |
8d749320 SM |
6912 | /* We cast to a pointer to the "base class". */ |
6913 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6914 | |
6915 | r->dtr = stop_reply_dtr; | |
6916 | ||
6917 | return r; | |
6918 | } | |
6919 | ||
6920 | /* A client of notification Stop. */ | |
6921 | ||
6922 | struct notif_client notif_client_stop = | |
6923 | { | |
6924 | "Stop", | |
6925 | "vStopped", | |
6926 | remote_notif_stop_parse, | |
6927 | remote_notif_stop_ack, | |
6928 | remote_notif_stop_can_get_pending_events, | |
6929 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6930 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6931 | }; |
6932 | ||
85ad3aaf | 6933 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6934 | the pid of the process that owns the threads we want to check, or |
6935 | -1 if we want to check all threads. */ | |
6936 | ||
6937 | static int | |
6938 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6939 | ptid_t thread_ptid) | |
6940 | { | |
6941 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6942 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6943 | { | |
6944 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6945 | return 1; | |
6946 | } | |
6947 | ||
6948 | return 0; | |
6949 | } | |
6950 | ||
85ad3aaf PA |
6951 | /* Return the thread's pending status used to determine whether the |
6952 | thread is a fork parent stopped at a fork event. */ | |
6953 | ||
6954 | static struct target_waitstatus * | |
6955 | thread_pending_fork_status (struct thread_info *thread) | |
6956 | { | |
6957 | if (thread->suspend.waitstatus_pending_p) | |
6958 | return &thread->suspend.waitstatus; | |
6959 | else | |
6960 | return &thread->pending_follow; | |
6961 | } | |
6962 | ||
6963 | /* Determine if THREAD is a pending fork parent thread. */ | |
6964 | ||
6965 | static int | |
6966 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6967 | { | |
6968 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6969 | int pid = -1; | |
6970 | ||
6971 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6972 | } | |
6973 | ||
cbb8991c DB |
6974 | /* If CONTEXT contains any fork child threads that have not been |
6975 | reported yet, remove them from the CONTEXT list. If such a | |
6976 | thread exists it is because we are stopped at a fork catchpoint | |
6977 | and have not yet called follow_fork, which will set up the | |
6978 | host-side data structures for the new process. */ | |
6979 | ||
6b8edb51 PA |
6980 | void |
6981 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c DB |
6982 | { |
6983 | struct thread_info * thread; | |
6984 | int pid = -1; | |
6985 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
6986 | |
6987 | /* For any threads stopped at a fork event, remove the corresponding | |
6988 | fork child threads from the CONTEXT list. */ | |
6989 | ALL_NON_EXITED_THREADS (thread) | |
6990 | { | |
85ad3aaf | 6991 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6992 | |
6993 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 6994 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
6995 | } |
6996 | ||
6997 | /* Check for any pending fork events (not reported or processed yet) | |
6998 | in process PID and remove those fork child threads from the | |
6999 | CONTEXT list as well. */ | |
7000 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7001 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7002 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
7003 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
7004 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
7005 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
7006 | } |
7007 | ||
7008 | /* Check whether any event pending in the vStopped queue would prevent | |
7009 | a global or process wildcard vCont action. Clear | |
7010 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
7011 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
7012 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
7013 | ||
6b8edb51 PA |
7014 | void |
7015 | remote_target::check_pending_events_prevent_wildcard_vcont | |
7016 | (int *may_global_wildcard) | |
85ad3aaf PA |
7017 | { |
7018 | struct notif_client *notif = ¬if_client_stop; | |
7019 | ||
7020 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7021 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7022 | { | |
7023 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7024 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7025 | continue; | |
85ad3aaf | 7026 | |
953edf2b TT |
7027 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7028 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
7029 | *may_global_wildcard = 0; | |
722247f1 | 7030 | |
953edf2b | 7031 | struct inferior *inf = find_inferior_ptid (event->ptid); |
722247f1 | 7032 | |
953edf2b TT |
7033 | /* This may be the first time we heard about this process. |
7034 | Regardless, we must not do a global wildcard resume, otherwise | |
7035 | we'd resume this process too. */ | |
7036 | *may_global_wildcard = 0; | |
7037 | if (inf != NULL) | |
7038 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
722247f1 | 7039 | } |
722247f1 YQ |
7040 | } |
7041 | ||
f48ff2a7 | 7042 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7043 | |
6b8edb51 PA |
7044 | void |
7045 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7046 | { |
f48ff2a7 YQ |
7047 | struct stop_reply *reply; |
7048 | struct remote_state *rs = get_remote_state (); | |
7049 | struct remote_notif_state *rns = rs->notif_state; | |
7050 | ||
7051 | /* This function can be notified when an inferior exists. When the | |
7052 | target is not remote, the notification state is NULL. */ | |
7053 | if (rs->remote_desc == NULL) | |
7054 | return; | |
7055 | ||
7056 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7057 | |
74531fed | 7058 | /* Discard the in-flight notification. */ |
f48ff2a7 | 7059 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 7060 | { |
722247f1 | 7061 | stop_reply_xfree (reply); |
f48ff2a7 | 7062 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 7063 | } |
c906108c | 7064 | |
74531fed PA |
7065 | /* Discard the stop replies we have already pulled with |
7066 | vStopped. */ | |
953edf2b TT |
7067 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7068 | rs->stop_reply_queue.end (), | |
7069 | [=] (const stop_reply_up &event) | |
7070 | { | |
7071 | return event->ptid.pid () == inf->pid; | |
7072 | }); | |
7073 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7074 | } |
7075 | ||
7076 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7077 | |
6b8edb51 PA |
7078 | void |
7079 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7080 | { |
6b8edb51 | 7081 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7082 | |
f48ff2a7 YQ |
7083 | /* Discard the stop replies we have already pulled with |
7084 | vStopped. */ | |
953edf2b TT |
7085 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7086 | rs->stop_reply_queue.end (), | |
7087 | [=] (const stop_reply_up &event) | |
7088 | { | |
7089 | return event->rs == rs; | |
7090 | }); | |
7091 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7092 | } |
43ff13b4 | 7093 | |
722247f1 YQ |
7094 | /* Remove the first reply in 'stop_reply_queue' which matches |
7095 | PTID. */ | |
2e9f7625 | 7096 | |
6b8edb51 PA |
7097 | struct stop_reply * |
7098 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7099 | { |
953edf2b | 7100 | remote_state *rs = get_remote_state (); |
722247f1 | 7101 | |
953edf2b TT |
7102 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7103 | rs->stop_reply_queue.end (), | |
7104 | [=] (const stop_reply_up &event) | |
7105 | { | |
7106 | return event->ptid.matches (ptid); | |
7107 | }); | |
7108 | struct stop_reply *result; | |
7109 | if (iter == rs->stop_reply_queue.end ()) | |
7110 | result = nullptr; | |
7111 | else | |
7112 | { | |
7113 | result = iter->release (); | |
7114 | rs->stop_reply_queue.erase (iter); | |
7115 | } | |
722247f1 | 7116 | |
722247f1 YQ |
7117 | if (notif_debug) |
7118 | fprintf_unfiltered (gdb_stdlog, | |
7119 | "notif: discard queued event: 'Stop' in %s\n", | |
7120 | target_pid_to_str (ptid)); | |
a744cf53 | 7121 | |
953edf2b | 7122 | return result; |
74531fed | 7123 | } |
75c99385 | 7124 | |
74531fed PA |
7125 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7126 | remove it from the queue, and return it. Returns NULL if none is | |
7127 | found. If there are still queued events left to process, tell the | |
7128 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7129 | |
6b8edb51 PA |
7130 | struct stop_reply * |
7131 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7132 | { |
953edf2b | 7133 | remote_state *rs = get_remote_state (); |
722247f1 | 7134 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7135 | |
953edf2b | 7136 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7137 | { |
6b8edb51 PA |
7138 | /* There's still at least an event left. */ |
7139 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7140 | } | |
74531fed | 7141 | |
722247f1 | 7142 | return r; |
74531fed PA |
7143 | } |
7144 | ||
7145 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7146 | know that we now have at least one queued event left to pass to the | |
7147 | core side, tell the event loop to get back to target_wait soon. */ | |
7148 | ||
6b8edb51 PA |
7149 | void |
7150 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7151 | { |
6b8edb51 | 7152 | remote_state *rs = get_remote_state (); |
953edf2b | 7153 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7154 | |
722247f1 YQ |
7155 | if (notif_debug) |
7156 | fprintf_unfiltered (gdb_stdlog, | |
7157 | "notif: push 'Stop' %s to queue %d\n", | |
7158 | target_pid_to_str (new_event->ptid), | |
953edf2b | 7159 | int (rs->stop_reply_queue.size ())); |
74531fed | 7160 | |
6b8edb51 | 7161 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7162 | } |
7163 | ||
7164 | /* Returns true if we have a stop reply for PTID. */ | |
7165 | ||
6b8edb51 PA |
7166 | int |
7167 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7168 | { |
6b8edb51 | 7169 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7170 | for (auto &event : rs->stop_reply_queue) |
7171 | if (ptid == event->ptid | |
7172 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7173 | return 1; | |
7174 | return 0; | |
74531fed PA |
7175 | } |
7176 | ||
26d56a93 SL |
7177 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7178 | starting with P and ending with PEND matches PREFIX. */ | |
7179 | ||
7180 | static int | |
7181 | strprefix (const char *p, const char *pend, const char *prefix) | |
7182 | { | |
7183 | for ( ; p < pend; p++, prefix++) | |
7184 | if (*p != *prefix) | |
7185 | return 0; | |
7186 | return *prefix == '\0'; | |
7187 | } | |
7188 | ||
74531fed PA |
7189 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7190 | result is stored in EVENT, or throws an error. */ | |
7191 | ||
6b8edb51 PA |
7192 | void |
7193 | remote_target::remote_parse_stop_reply (char *buf, stop_reply *event) | |
74531fed | 7194 | { |
5cd63fda | 7195 | remote_arch_state *rsa = NULL; |
74531fed | 7196 | ULONGEST addr; |
256642e8 | 7197 | const char *p; |
94585166 | 7198 | int skipregs = 0; |
74531fed PA |
7199 | |
7200 | event->ptid = null_ptid; | |
bcc75809 | 7201 | event->rs = get_remote_state (); |
74531fed PA |
7202 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7203 | event->ws.value.integer = 0; | |
f7e6eed5 | 7204 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 7205 | event->regcache = NULL; |
dc146f7c | 7206 | event->core = -1; |
74531fed PA |
7207 | |
7208 | switch (buf[0]) | |
7209 | { | |
7210 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7211 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7212 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7213 | ss = signal number | |
7214 | n... = register number | |
7215 | r... = register contents | |
7216 | */ | |
7217 | ||
7218 | p = &buf[3]; /* after Txx */ | |
7219 | while (*p) | |
7220 | { | |
256642e8 | 7221 | const char *p1; |
cea39f65 | 7222 | int fieldsize; |
43ff13b4 | 7223 | |
1f10ba14 PA |
7224 | p1 = strchr (p, ':'); |
7225 | if (p1 == NULL) | |
7226 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7227 | Packet: '%s'\n"), | |
7228 | p, buf); | |
7229 | if (p == p1) | |
7230 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7231 | Packet: '%s'\n"), | |
7232 | p, buf); | |
3c3bea1c | 7233 | |
1f10ba14 PA |
7234 | /* Some "registers" are actually extended stop information. |
7235 | Note if you're adding a new entry here: GDB 7.9 and | |
7236 | earlier assume that all register "numbers" that start | |
7237 | with an hex digit are real register numbers. Make sure | |
7238 | the server only sends such a packet if it knows the | |
7239 | client understands it. */ | |
c8e38a49 | 7240 | |
26d56a93 | 7241 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7242 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7243 | else if (strprefix (p, p1, "syscall_entry")) |
7244 | { | |
7245 | ULONGEST sysno; | |
7246 | ||
7247 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7248 | p = unpack_varlen_hex (++p1, &sysno); | |
7249 | event->ws.value.syscall_number = (int) sysno; | |
7250 | } | |
7251 | else if (strprefix (p, p1, "syscall_return")) | |
7252 | { | |
7253 | ULONGEST sysno; | |
7254 | ||
7255 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7256 | p = unpack_varlen_hex (++p1, &sysno); | |
7257 | event->ws.value.syscall_number = (int) sysno; | |
7258 | } | |
26d56a93 SL |
7259 | else if (strprefix (p, p1, "watch") |
7260 | || strprefix (p, p1, "rwatch") | |
7261 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7262 | { |
f7e6eed5 | 7263 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7264 | p = unpack_varlen_hex (++p1, &addr); |
7265 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7266 | } |
26d56a93 | 7267 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7268 | { |
7269 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7270 | ||
7271 | /* Make sure the stub doesn't forget to indicate support | |
7272 | with qSupported. */ | |
7273 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7274 | error (_("Unexpected swbreak stop reason")); | |
7275 | ||
7276 | /* The value part is documented as "must be empty", | |
7277 | though we ignore it, in case we ever decide to make | |
7278 | use of it in a backward compatible way. */ | |
8424cc97 | 7279 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7280 | } |
26d56a93 | 7281 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7282 | { |
7283 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7284 | ||
7285 | /* Make sure the stub doesn't forget to indicate support | |
7286 | with qSupported. */ | |
7287 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7288 | error (_("Unexpected hwbreak stop reason")); | |
7289 | ||
7290 | /* See above. */ | |
8424cc97 | 7291 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7292 | } |
26d56a93 | 7293 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7294 | { |
1f10ba14 | 7295 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7296 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7297 | } |
26d56a93 | 7298 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7299 | { |
7300 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7301 | /* p1 will indicate "begin" or "end", but it makes | |
7302 | no difference for now, so ignore it. */ | |
8424cc97 | 7303 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7304 | } |
26d56a93 | 7305 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7306 | { |
7307 | ULONGEST c; | |
a744cf53 | 7308 | |
1f10ba14 PA |
7309 | p = unpack_varlen_hex (++p1, &c); |
7310 | event->core = c; | |
cea39f65 | 7311 | } |
26d56a93 | 7312 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7313 | { |
7314 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7315 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7316 | } | |
26d56a93 | 7317 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7318 | { |
7319 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7320 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7321 | } | |
26d56a93 | 7322 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7323 | { |
7324 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7325 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7326 | } |
6ab24463 | 7327 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7328 | { |
7329 | ULONGEST ignored; | |
7330 | char pathname[PATH_MAX]; | |
7331 | int pathlen; | |
7332 | ||
7333 | /* Determine the length of the execd pathname. */ | |
7334 | p = unpack_varlen_hex (++p1, &ignored); | |
7335 | pathlen = (p - p1) / 2; | |
7336 | ||
7337 | /* Save the pathname for event reporting and for | |
7338 | the next run command. */ | |
7339 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
7340 | pathname[pathlen] = '\0'; | |
7341 | ||
7342 | /* This is freed during event handling. */ | |
7343 | event->ws.value.execd_pathname = xstrdup (pathname); | |
7344 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
7345 | ||
7346 | /* Skip the registers included in this packet, since | |
7347 | they may be for an architecture different from the | |
7348 | one used by the original program. */ | |
7349 | skipregs = 1; | |
7350 | } | |
65706a29 PA |
7351 | else if (strprefix (p, p1, "create")) |
7352 | { | |
7353 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7354 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7355 | } |
cea39f65 MS |
7356 | else |
7357 | { | |
1f10ba14 | 7358 | ULONGEST pnum; |
256642e8 | 7359 | const char *p_temp; |
1f10ba14 | 7360 | |
94585166 DB |
7361 | if (skipregs) |
7362 | { | |
8424cc97 | 7363 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7364 | p++; |
7365 | continue; | |
7366 | } | |
7367 | ||
1f10ba14 PA |
7368 | /* Maybe a real ``P'' register number. */ |
7369 | p_temp = unpack_varlen_hex (p, &pnum); | |
7370 | /* If the first invalid character is the colon, we got a | |
7371 | register number. Otherwise, it's an unknown stop | |
7372 | reason. */ | |
7373 | if (p_temp == p1) | |
7374 | { | |
5cd63fda PA |
7375 | /* If we haven't parsed the event's thread yet, find |
7376 | it now, in order to find the architecture of the | |
7377 | reported expedited registers. */ | |
7378 | if (event->ptid == null_ptid) | |
7379 | { | |
7380 | const char *thr = strstr (p1 + 1, ";thread:"); | |
7381 | if (thr != NULL) | |
7382 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7383 | NULL); | |
7384 | else | |
3cada740 PA |
7385 | { |
7386 | /* Either the current thread hasn't changed, | |
7387 | or the inferior is not multi-threaded. | |
7388 | The event must be for the thread we last | |
7389 | set as (or learned as being) current. */ | |
7390 | event->ptid = event->rs->general_thread; | |
7391 | } | |
5cd63fda PA |
7392 | } |
7393 | ||
7394 | if (rsa == NULL) | |
7395 | { | |
7396 | inferior *inf = (event->ptid == null_ptid | |
7397 | ? NULL | |
7398 | : find_inferior_ptid (event->ptid)); | |
7399 | /* If this is the first time we learn anything | |
7400 | about this process, skip the registers | |
7401 | included in this packet, since we don't yet | |
7402 | know which architecture to use to parse them. | |
7403 | We'll determine the architecture later when | |
7404 | we process the stop reply and retrieve the | |
7405 | target description, via | |
7406 | remote_notice_new_inferior -> | |
7407 | post_create_inferior. */ | |
7408 | if (inf == NULL) | |
7409 | { | |
7410 | p = strchrnul (p1 + 1, ';'); | |
7411 | p++; | |
7412 | continue; | |
7413 | } | |
7414 | ||
7415 | event->arch = inf->gdbarch; | |
9d6eea31 | 7416 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7417 | } |
7418 | ||
7419 | packet_reg *reg | |
7420 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7421 | cached_reg_t cached_reg; |
43ff13b4 | 7422 | |
1f10ba14 PA |
7423 | if (reg == NULL) |
7424 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7425 | Packet: '%s'\n"), |
1f10ba14 | 7426 | hex_string (pnum), p, buf); |
c8e38a49 | 7427 | |
1f10ba14 | 7428 | cached_reg.num = reg->regnum; |
d1dff226 | 7429 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7430 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7431 | |
1f10ba14 PA |
7432 | p = p1 + 1; |
7433 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7434 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7435 | p += 2 * fieldsize; |
5cd63fda | 7436 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7437 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7438 | |
1f10ba14 PA |
7439 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
7440 | } | |
7441 | else | |
7442 | { | |
7443 | /* Not a number. Silently skip unknown optional | |
7444 | info. */ | |
8424cc97 | 7445 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7446 | } |
cea39f65 | 7447 | } |
c8e38a49 | 7448 | |
cea39f65 MS |
7449 | if (*p != ';') |
7450 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7451 | buf, p); | |
7452 | ++p; | |
7453 | } | |
5b5596ff PA |
7454 | |
7455 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7456 | break; | |
7457 | ||
c8e38a49 PA |
7458 | /* fall through */ |
7459 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7460 | { |
7461 | int sig; | |
7462 | ||
7463 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7464 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7465 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7466 | event->ws.value.sig = (enum gdb_signal) sig; | |
7467 | else | |
7468 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7469 | } | |
c8e38a49 | 7470 | break; |
65706a29 PA |
7471 | case 'w': /* Thread exited. */ |
7472 | { | |
256642e8 | 7473 | const char *p; |
65706a29 PA |
7474 | ULONGEST value; |
7475 | ||
7476 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7477 | p = unpack_varlen_hex (&buf[1], &value); | |
7478 | event->ws.value.integer = value; | |
7479 | if (*p != ';') | |
7480 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7481 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7482 | break; |
7483 | } | |
c8e38a49 PA |
7484 | case 'W': /* Target exited. */ |
7485 | case 'X': | |
7486 | { | |
256642e8 | 7487 | const char *p; |
c8e38a49 PA |
7488 | int pid; |
7489 | ULONGEST value; | |
82f73884 | 7490 | |
c8e38a49 PA |
7491 | /* GDB used to accept only 2 hex chars here. Stubs should |
7492 | only send more if they detect GDB supports multi-process | |
7493 | support. */ | |
7494 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7495 | |
c8e38a49 PA |
7496 | if (buf[0] == 'W') |
7497 | { | |
7498 | /* The remote process exited. */ | |
74531fed PA |
7499 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7500 | event->ws.value.integer = value; | |
c8e38a49 PA |
7501 | } |
7502 | else | |
7503 | { | |
7504 | /* The remote process exited with a signal. */ | |
74531fed | 7505 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7506 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7507 | event->ws.value.sig = (enum gdb_signal) value; | |
7508 | else | |
7509 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7510 | } |
82f73884 | 7511 | |
c8e38a49 PA |
7512 | /* If no process is specified, assume inferior_ptid. */ |
7513 | pid = ptid_get_pid (inferior_ptid); | |
7514 | if (*p == '\0') | |
7515 | ; | |
7516 | else if (*p == ';') | |
7517 | { | |
7518 | p++; | |
7519 | ||
0b24eb2d | 7520 | if (*p == '\0') |
82f73884 | 7521 | ; |
61012eef | 7522 | else if (startswith (p, "process:")) |
82f73884 | 7523 | { |
c8e38a49 | 7524 | ULONGEST upid; |
a744cf53 | 7525 | |
c8e38a49 PA |
7526 | p += sizeof ("process:") - 1; |
7527 | unpack_varlen_hex (p, &upid); | |
7528 | pid = upid; | |
82f73884 PA |
7529 | } |
7530 | else | |
7531 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7532 | } |
c8e38a49 PA |
7533 | else |
7534 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7535 | event->ptid = pid_to_ptid (pid); |
7536 | } | |
7537 | break; | |
f2faf941 PA |
7538 | case 'N': |
7539 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7540 | event->ptid = minus_one_ptid; | |
7541 | break; | |
74531fed PA |
7542 | } |
7543 | ||
6efcd9a8 | 7544 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7545 | error (_("No process or thread specified in stop reply: %s"), buf); |
7546 | } | |
7547 | ||
722247f1 YQ |
7548 | /* When the stub wants to tell GDB about a new notification reply, it |
7549 | sends a notification (%Stop, for example). Those can come it at | |
7550 | any time, hence, we have to make sure that any pending | |
7551 | putpkt/getpkt sequence we're making is finished, before querying | |
7552 | the stub for more events with the corresponding ack command | |
7553 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7554 | immediately upon receiving the notification, something like this | |
7555 | could happen: | |
74531fed PA |
7556 | |
7557 | 1.1) --> Hg 1 | |
7558 | 1.2) <-- OK | |
7559 | 1.3) --> g | |
7560 | 1.4) <-- %Stop | |
7561 | 1.5) --> vStopped | |
7562 | 1.6) <-- (registers reply to step #1.3) | |
7563 | ||
7564 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7565 | query. | |
7566 | ||
796cb314 | 7567 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7568 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7569 | doing whatever we were doing: | |
7570 | ||
7571 | 2.1) --> Hg 1 | |
7572 | 2.2) <-- OK | |
7573 | 2.3) --> g | |
7574 | 2.4) <-- %Stop | |
7575 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7576 | 2.5) <-- (registers reply to step #2.3) | |
7577 | ||
7578 | Eventualy after step #2.5, we return to the event loop, which | |
7579 | notices there's an event on the | |
7580 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7581 | associated callback --- the function below. At this point, we're | |
7582 | always safe to start a vStopped sequence. : | |
7583 | ||
7584 | 2.6) --> vStopped | |
7585 | 2.7) <-- T05 thread:2 | |
7586 | 2.8) --> vStopped | |
7587 | 2.9) --> OK | |
7588 | */ | |
7589 | ||
722247f1 | 7590 | void |
6b8edb51 | 7591 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7592 | { |
7593 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7594 | |
f48ff2a7 | 7595 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7596 | { |
722247f1 YQ |
7597 | if (notif_debug) |
7598 | fprintf_unfiltered (gdb_stdlog, | |
7599 | "notif: process: '%s' ack pending event\n", | |
7600 | nc->name); | |
74531fed | 7601 | |
722247f1 | 7602 | /* acknowledge */ |
6b8edb51 | 7603 | nc->ack (this, nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
f48ff2a7 | 7604 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7605 | |
7606 | while (1) | |
7607 | { | |
7608 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7609 | if (strcmp (rs->buf, "OK") == 0) | |
7610 | break; | |
7611 | else | |
6b8edb51 | 7612 | remote_notif_ack (this, nc, rs->buf); |
74531fed PA |
7613 | } |
7614 | } | |
722247f1 YQ |
7615 | else |
7616 | { | |
7617 | if (notif_debug) | |
7618 | fprintf_unfiltered (gdb_stdlog, | |
7619 | "notif: process: '%s' no pending reply\n", | |
7620 | nc->name); | |
7621 | } | |
74531fed PA |
7622 | } |
7623 | ||
6b8edb51 PA |
7624 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7625 | avoid having to export the whole remote_target class. */ | |
7626 | ||
7627 | void | |
7628 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7629 | { | |
7630 | remote->remote_notif_get_pending_events (nc); | |
7631 | } | |
7632 | ||
74531fed PA |
7633 | /* Called when it is decided that STOP_REPLY holds the info of the |
7634 | event that is to be returned to the core. This function always | |
7635 | destroys STOP_REPLY. */ | |
7636 | ||
6b8edb51 PA |
7637 | ptid_t |
7638 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
7639 | struct target_waitstatus *status) | |
74531fed PA |
7640 | { |
7641 | ptid_t ptid; | |
7642 | ||
7643 | *status = stop_reply->ws; | |
7644 | ptid = stop_reply->ptid; | |
7645 | ||
7646 | /* If no thread/process was reported by the stub, assume the current | |
7647 | inferior. */ | |
7648 | if (ptid_equal (ptid, null_ptid)) | |
7649 | ptid = inferior_ptid; | |
7650 | ||
5f3563ea | 7651 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7652 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7653 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7654 | { |
5f3563ea PA |
7655 | /* Expedited registers. */ |
7656 | if (stop_reply->regcache) | |
7657 | { | |
217f1f79 | 7658 | struct regcache *regcache |
5cd63fda | 7659 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea PA |
7660 | cached_reg_t *reg; |
7661 | int ix; | |
7662 | ||
7663 | for (ix = 0; | |
d1dff226 | 7664 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7665 | ix++) |
d1dff226 | 7666 | { |
73e1c03f | 7667 | regcache->raw_supply (reg->num, reg->data); |
d1dff226 AH |
7668 | xfree (reg->data); |
7669 | } | |
7670 | ||
5f3563ea PA |
7671 | VEC_free (cached_reg_t, stop_reply->regcache); |
7672 | } | |
74531fed | 7673 | |
1941c569 | 7674 | remote_notice_new_inferior (ptid, 0); |
7aabaf9d | 7675 | remote_thread_info *remote_thr = get_remote_thread_info (ptid); |
799a2abe PA |
7676 | remote_thr->core = stop_reply->core; |
7677 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7678 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7679 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7680 | } |
7681 | ||
74531fed PA |
7682 | stop_reply_xfree (stop_reply); |
7683 | return ptid; | |
7684 | } | |
7685 | ||
7686 | /* The non-stop mode version of target_wait. */ | |
7687 | ||
6b8edb51 PA |
7688 | ptid_t |
7689 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) | |
74531fed PA |
7690 | { |
7691 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7692 | struct stop_reply *stop_reply; |
7693 | int ret; | |
fee9eda9 | 7694 | int is_notif = 0; |
74531fed PA |
7695 | |
7696 | /* If in non-stop mode, get out of getpkt even if a | |
7697 | notification is received. */ | |
7698 | ||
7699 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7700 | 0 /* forever */, &is_notif); |
74531fed PA |
7701 | while (1) |
7702 | { | |
fee9eda9 | 7703 | if (ret != -1 && !is_notif) |
74531fed PA |
7704 | switch (rs->buf[0]) |
7705 | { | |
7706 | case 'E': /* Error of some sort. */ | |
7707 | /* We're out of sync with the target now. Did it continue | |
7708 | or not? We can't tell which thread it was in non-stop, | |
7709 | so just ignore this. */ | |
7710 | warning (_("Remote failure reply: %s"), rs->buf); | |
7711 | break; | |
7712 | case 'O': /* Console output. */ | |
7713 | remote_console_output (rs->buf + 1); | |
7714 | break; | |
7715 | default: | |
7716 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7717 | break; | |
7718 | } | |
7719 | ||
7720 | /* Acknowledge a pending stop reply that may have arrived in the | |
7721 | mean time. */ | |
f48ff2a7 | 7722 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7723 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7724 | |
7725 | /* If indeed we noticed a stop reply, we're done. */ | |
7726 | stop_reply = queued_stop_reply (ptid); | |
7727 | if (stop_reply != NULL) | |
7728 | return process_stop_reply (stop_reply, status); | |
7729 | ||
47608cb1 | 7730 | /* Still no event. If we're just polling for an event, then |
74531fed | 7731 | return to the event loop. */ |
47608cb1 | 7732 | if (options & TARGET_WNOHANG) |
74531fed PA |
7733 | { |
7734 | status->kind = TARGET_WAITKIND_IGNORE; | |
7735 | return minus_one_ptid; | |
7736 | } | |
7737 | ||
47608cb1 | 7738 | /* Otherwise do a blocking wait. */ |
74531fed | 7739 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7740 | 1 /* forever */, &is_notif); |
74531fed PA |
7741 | } |
7742 | } | |
7743 | ||
7744 | /* Wait until the remote machine stops, then return, storing status in | |
7745 | STATUS just as `wait' would. */ | |
7746 | ||
6b8edb51 PA |
7747 | ptid_t |
7748 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, int options) | |
74531fed PA |
7749 | { |
7750 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7751 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7752 | char *buf; |
74531fed PA |
7753 | struct stop_reply *stop_reply; |
7754 | ||
47608cb1 PA |
7755 | again: |
7756 | ||
74531fed PA |
7757 | status->kind = TARGET_WAITKIND_IGNORE; |
7758 | status->value.integer = 0; | |
7759 | ||
7760 | stop_reply = queued_stop_reply (ptid); | |
7761 | if (stop_reply != NULL) | |
7762 | return process_stop_reply (stop_reply, status); | |
7763 | ||
7764 | if (rs->cached_wait_status) | |
7765 | /* Use the cached wait status, but only once. */ | |
7766 | rs->cached_wait_status = 0; | |
7767 | else | |
7768 | { | |
7769 | int ret; | |
722247f1 | 7770 | int is_notif; |
567420d1 | 7771 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 7772 | && rs->wait_forever_enabled_p); |
567420d1 PA |
7773 | |
7774 | if (!rs->waiting_for_stop_reply) | |
7775 | { | |
7776 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7777 | return minus_one_ptid; | |
7778 | } | |
74531fed | 7779 | |
74531fed PA |
7780 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7781 | _never_ wait for ever -> test on target_is_async_p(). | |
7782 | However, before we do that we need to ensure that the caller | |
7783 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7784 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7785 | forever, &is_notif); |
722247f1 YQ |
7786 | |
7787 | /* GDB gets a notification. Return to core as this event is | |
7788 | not interesting. */ | |
7789 | if (ret != -1 && is_notif) | |
7790 | return minus_one_ptid; | |
567420d1 PA |
7791 | |
7792 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7793 | return minus_one_ptid; | |
74531fed PA |
7794 | } |
7795 | ||
7796 | buf = rs->buf; | |
7797 | ||
3a29589a DJ |
7798 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7799 | an 'F' or 'O' packet. */ | |
7800 | if (buf[0] != 'F' && buf[0] != 'O') | |
7801 | rs->ctrlc_pending_p = 0; | |
7802 | ||
74531fed PA |
7803 | switch (buf[0]) |
7804 | { | |
7805 | case 'E': /* Error of some sort. */ | |
7806 | /* We're out of sync with the target now. Did it continue or | |
7807 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7808 | rs->waiting_for_stop_reply = 0; |
7809 | ||
74531fed PA |
7810 | warning (_("Remote failure reply: %s"), buf); |
7811 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7812 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7813 | break; |
7814 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7815 | /* GDB may access the inferior memory while handling the File-I/O |
7816 | request, but we don't want GDB accessing memory while waiting | |
7817 | for a stop reply. See the comments in putpkt_binary. Set | |
7818 | waiting_for_stop_reply to 0 temporarily. */ | |
7819 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 7820 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 7821 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
7822 | /* GDB handled the File-I/O request, and the target is running |
7823 | again. Keep waiting for events. */ | |
7824 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7825 | break; |
f2faf941 | 7826 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7827 | { |
29090fb6 LM |
7828 | struct stop_reply *stop_reply; |
7829 | ||
7830 | /* There is a stop reply to handle. */ | |
7831 | rs->waiting_for_stop_reply = 0; | |
7832 | ||
7833 | stop_reply | |
6b8edb51 PA |
7834 | = (struct stop_reply *) remote_notif_parse (this, |
7835 | ¬if_client_stop, | |
722247f1 | 7836 | rs->buf); |
74531fed | 7837 | |
74531fed | 7838 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7839 | break; |
7840 | } | |
7841 | case 'O': /* Console output. */ | |
7842 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7843 | break; |
7844 | case '\0': | |
b73be471 | 7845 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7846 | { |
7847 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7848 | remote system doesn't support it. */ | |
223ffa71 | 7849 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7850 | printf_filtered |
7851 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7852 | gdb_signal_to_name (rs->last_sent_signal)); |
7853 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7854 | target_terminal::inferior (); |
c8e38a49 | 7855 | |
f5c4fcd9 TT |
7856 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7857 | putpkt (buf); | |
c8e38a49 | 7858 | break; |
43ff13b4 | 7859 | } |
86a73007 | 7860 | /* fallthrough */ |
c8e38a49 PA |
7861 | default: |
7862 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7863 | break; |
43ff13b4 | 7864 | } |
c8e38a49 | 7865 | |
f2faf941 PA |
7866 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7867 | return minus_one_ptid; | |
7868 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7869 | { |
7870 | /* Nothing interesting happened. If we're doing a non-blocking | |
7871 | poll, we're done. Otherwise, go back to waiting. */ | |
7872 | if (options & TARGET_WNOHANG) | |
7873 | return minus_one_ptid; | |
7874 | else | |
7875 | goto again; | |
7876 | } | |
74531fed PA |
7877 | else if (status->kind != TARGET_WAITKIND_EXITED |
7878 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7879 | { |
7880 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7881 | record_currthread (rs, event_ptid); |
82f73884 PA |
7882 | else |
7883 | event_ptid = inferior_ptid; | |
43ff13b4 | 7884 | } |
74531fed PA |
7885 | else |
7886 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7887 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7888 | |
82f73884 | 7889 | return event_ptid; |
43ff13b4 JM |
7890 | } |
7891 | ||
74531fed PA |
7892 | /* Wait until the remote machine stops, then return, storing status in |
7893 | STATUS just as `wait' would. */ | |
7894 | ||
f6ac5f3d PA |
7895 | ptid_t |
7896 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, int options) | |
c8e38a49 PA |
7897 | { |
7898 | ptid_t event_ptid; | |
7899 | ||
6efcd9a8 | 7900 | if (target_is_non_stop_p ()) |
6b8edb51 | 7901 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 7902 | else |
6b8edb51 | 7903 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 7904 | |
d9d41e78 | 7905 | if (target_is_async_p ()) |
c8e38a49 | 7906 | { |
6b8edb51 PA |
7907 | remote_state *rs = get_remote_state (); |
7908 | ||
74531fed PA |
7909 | /* If there are are events left in the queue tell the event loop |
7910 | to return here. */ | |
953edf2b | 7911 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7912 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 7913 | } |
c8e38a49 PA |
7914 | |
7915 | return event_ptid; | |
7916 | } | |
7917 | ||
74ca34ce | 7918 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7919 | |
6b8edb51 PA |
7920 | int |
7921 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
7922 | packet_reg *reg) | |
b96ec7ac | 7923 | { |
ac7936df | 7924 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7925 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7926 | char *buf, *p; |
9890e433 | 7927 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7928 | int i; |
7929 | ||
4082afcc | 7930 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7931 | return 0; |
7932 | ||
7933 | if (reg->pnum == -1) | |
7934 | return 0; | |
7935 | ||
2e9f7625 | 7936 | p = rs->buf; |
fcad0fa4 | 7937 | *p++ = 'p'; |
74ca34ce | 7938 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7939 | *p++ = '\0'; |
1f4437a4 MS |
7940 | putpkt (rs->buf); |
7941 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7942 | |
2e9f7625 DJ |
7943 | buf = rs->buf; |
7944 | ||
74ca34ce DJ |
7945 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7946 | { | |
7947 | case PACKET_OK: | |
7948 | break; | |
7949 | case PACKET_UNKNOWN: | |
7950 | return 0; | |
7951 | case PACKET_ERROR: | |
27a9c0bf | 7952 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7953 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7954 | reg->regnum), |
7955 | buf); | |
74ca34ce | 7956 | } |
3f9a994c JB |
7957 | |
7958 | /* If this register is unfetchable, tell the regcache. */ | |
7959 | if (buf[0] == 'x') | |
8480adf2 | 7960 | { |
73e1c03f | 7961 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 7962 | return 1; |
b96ec7ac | 7963 | } |
b96ec7ac | 7964 | |
3f9a994c JB |
7965 | /* Otherwise, parse and supply the value. */ |
7966 | p = buf; | |
7967 | i = 0; | |
7968 | while (p[0] != 0) | |
7969 | { | |
7970 | if (p[1] == 0) | |
74ca34ce | 7971 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7972 | |
7973 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7974 | p += 2; | |
7975 | } | |
73e1c03f | 7976 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 7977 | return 1; |
b96ec7ac AC |
7978 | } |
7979 | ||
74ca34ce DJ |
7980 | /* Fetch the registers included in the target's 'g' packet. */ |
7981 | ||
6b8edb51 PA |
7982 | int |
7983 | remote_target::send_g_packet () | |
c906108c | 7984 | { |
d01949b6 | 7985 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7986 | int buf_len; |
c906108c | 7987 | |
bba74b36 | 7988 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
b75abf5b AK |
7989 | putpkt (rs->buf); |
7990 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7991 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
7992 | error (_("Could not read registers; remote failure reply '%s'"), | |
7993 | rs->buf); | |
c906108c | 7994 | |
29709017 DJ |
7995 | /* We can get out of synch in various cases. If the first character |
7996 | in the buffer is not a hex character, assume that has happened | |
7997 | and try to fetch another packet to read. */ | |
7998 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7999 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8000 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8001 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8002 | { | |
8003 | if (remote_debug) | |
8004 | fprintf_unfiltered (gdb_stdlog, | |
8005 | "Bad register packet; fetching a new packet\n"); | |
8006 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8007 | } | |
8008 | ||
74ca34ce DJ |
8009 | buf_len = strlen (rs->buf); |
8010 | ||
8011 | /* Sanity check the received packet. */ | |
8012 | if (buf_len % 2 != 0) | |
8013 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
8014 | |
8015 | return buf_len / 2; | |
8016 | } | |
8017 | ||
6b8edb51 PA |
8018 | void |
8019 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8020 | { |
ac7936df | 8021 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8022 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8023 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8024 | int i, buf_len; |
8025 | char *p; | |
8026 | char *regs; | |
8027 | ||
8028 | buf_len = strlen (rs->buf); | |
8029 | ||
8030 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8031 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 SM |
8032 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8033 | "bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf); | |
74ca34ce DJ |
8034 | |
8035 | /* Save the size of the packet sent to us by the target. It is used | |
8036 | as a heuristic when determining the max size of packets that the | |
8037 | target can safely receive. */ | |
8038 | if (rsa->actual_register_packet_size == 0) | |
8039 | rsa->actual_register_packet_size = buf_len; | |
8040 | ||
8041 | /* If this is smaller than we guessed the 'g' packet would be, | |
8042 | update our records. A 'g' reply that doesn't include a register's | |
8043 | value implies either that the register is not available, or that | |
8044 | the 'p' packet must be used. */ | |
8045 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8046 | { |
9dc193c3 | 8047 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8048 | |
4a22f64d | 8049 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8050 | { |
9dc193c3 LF |
8051 | long offset = rsa->regs[i].offset; |
8052 | long reg_size = register_size (gdbarch, i); | |
8053 | ||
74ca34ce DJ |
8054 | if (rsa->regs[i].pnum == -1) |
8055 | continue; | |
8056 | ||
9dc193c3 | 8057 | if (offset >= sizeof_g_packet) |
74ca34ce | 8058 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8059 | else if (offset + reg_size > sizeof_g_packet) |
8060 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8061 | else |
74ca34ce | 8062 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8063 | } |
9dc193c3 LF |
8064 | |
8065 | /* Looks valid enough, we can assume this is the correct length | |
8066 | for a 'g' packet. It's important not to adjust | |
8067 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8068 | this "if" won't be run the next time the method is called | |
8069 | with a packet of the same size and one of the internal errors | |
8070 | below will trigger instead. */ | |
8071 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 8072 | } |
b323314b | 8073 | |
224c3ddb | 8074 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8075 | |
8076 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8077 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8078 | |
c906108c SS |
8079 | /* Reply describes registers byte by byte, each byte encoded as two |
8080 | hex characters. Suck them all up, then supply them to the | |
8081 | register cacheing/storage mechanism. */ | |
8082 | ||
74ca34ce | 8083 | p = rs->buf; |
ea9c271d | 8084 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8085 | { |
74ca34ce DJ |
8086 | if (p[0] == 0 || p[1] == 0) |
8087 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8088 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8089 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8090 | |
c906108c | 8091 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8092 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8093 | else |
8094 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8095 | p += 2; | |
8096 | } | |
8097 | ||
a744cf53 MS |
8098 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8099 | { | |
8100 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8101 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8102 | |
8103 | if (r->in_g_packet) | |
8104 | { | |
9dc193c3 | 8105 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
8106 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8107 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8108 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8109 | else if (rs->buf[r->offset * 2] == 'x') |
8110 | { | |
8111 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
8112 | /* The register isn't available, mark it as such (at | |
8113 | the same time setting the value to zero). */ | |
73e1c03f | 8114 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8115 | } |
8116 | else | |
73e1c03f | 8117 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8118 | } |
8119 | } | |
c906108c SS |
8120 | } |
8121 | ||
6b8edb51 PA |
8122 | void |
8123 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8124 | { |
8125 | send_g_packet (); | |
56be3814 | 8126 | process_g_packet (regcache); |
29709017 DJ |
8127 | } |
8128 | ||
e6e4e701 PA |
8129 | /* Make the remote selected traceframe match GDB's selected |
8130 | traceframe. */ | |
8131 | ||
6b8edb51 PA |
8132 | void |
8133 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8134 | { |
8135 | int newnum; | |
262e1174 | 8136 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8137 | |
262e1174 | 8138 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8139 | return; |
8140 | ||
8141 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8142 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8143 | |
8144 | newnum = target_trace_find (tfind_number, | |
8145 | get_traceframe_number (), 0, 0, NULL); | |
8146 | ||
8147 | /* Should not happen. If it does, all bets are off. */ | |
8148 | if (newnum != get_traceframe_number ()) | |
8149 | warning (_("could not set remote traceframe")); | |
8150 | } | |
8151 | ||
f6ac5f3d PA |
8152 | void |
8153 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8154 | { |
ac7936df | 8155 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8156 | struct remote_state *rs = get_remote_state (); |
8157 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8158 | int i; |
8159 | ||
e6e4e701 | 8160 | set_remote_traceframe (); |
222312d3 | 8161 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8162 | |
8163 | if (regnum >= 0) | |
8164 | { | |
5cd63fda | 8165 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8166 | |
74ca34ce DJ |
8167 | gdb_assert (reg != NULL); |
8168 | ||
8169 | /* If this register might be in the 'g' packet, try that first - | |
8170 | we are likely to read more than one register. If this is the | |
8171 | first 'g' packet, we might be overly optimistic about its | |
8172 | contents, so fall back to 'p'. */ | |
8173 | if (reg->in_g_packet) | |
8174 | { | |
56be3814 | 8175 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8176 | if (reg->in_g_packet) |
8177 | return; | |
8178 | } | |
8179 | ||
56be3814 | 8180 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8181 | return; |
8182 | ||
8183 | /* This register is not available. */ | |
73e1c03f | 8184 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8185 | |
8186 | return; | |
8187 | } | |
8188 | ||
56be3814 | 8189 | fetch_registers_using_g (regcache); |
74ca34ce | 8190 | |
5cd63fda | 8191 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8192 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8193 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8194 | { |
8195 | /* This register is not available. */ | |
73e1c03f | 8196 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8197 | } |
8198 | } | |
8199 | ||
c906108c SS |
8200 | /* Prepare to store registers. Since we may send them all (using a |
8201 | 'G' request), we have to read out the ones we don't want to change | |
8202 | first. */ | |
8203 | ||
f6ac5f3d PA |
8204 | void |
8205 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8206 | { |
9d6eea31 PA |
8207 | struct remote_state *rs = get_remote_state (); |
8208 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8209 | int i; |
cf0e1e0d | 8210 | |
c906108c | 8211 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8212 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8213 | { |
8214 | case PACKET_DISABLE: | |
8215 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8216 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8217 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8218 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8219 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8220 | break; |
8221 | case PACKET_ENABLE: | |
8222 | break; | |
8223 | } | |
8224 | } | |
8225 | ||
ad10f812 | 8226 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8227 | packet was not recognized. */ |
5a2468f5 | 8228 | |
6b8edb51 PA |
8229 | int |
8230 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8231 | packet_reg *reg) | |
5a2468f5 | 8232 | { |
ac7936df | 8233 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8234 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8235 | /* Try storing a single register. */ |
6d820c5c | 8236 | char *buf = rs->buf; |
9890e433 | 8237 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8238 | char *p; |
5a2468f5 | 8239 | |
4082afcc | 8240 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8241 | return 0; |
8242 | ||
8243 | if (reg->pnum == -1) | |
8244 | return 0; | |
8245 | ||
ea9c271d | 8246 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8247 | p = buf + strlen (buf); |
34a79281 | 8248 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8249 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
8250 | putpkt (rs->buf); |
8251 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 8252 | |
74ca34ce DJ |
8253 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8254 | { | |
8255 | case PACKET_OK: | |
8256 | return 1; | |
8257 | case PACKET_ERROR: | |
27a9c0bf MS |
8258 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8259 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
8260 | case PACKET_UNKNOWN: |
8261 | return 0; | |
8262 | default: | |
8263 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8264 | } | |
c906108c SS |
8265 | } |
8266 | ||
23860348 MS |
8267 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8268 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8269 | |
6b8edb51 PA |
8270 | void |
8271 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8272 | { |
d01949b6 | 8273 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8274 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8275 | gdb_byte *regs; |
c906108c SS |
8276 | char *p; |
8277 | ||
193cb69f AC |
8278 | /* Extract all the registers in the regcache copying them into a |
8279 | local buffer. */ | |
8280 | { | |
b323314b | 8281 | int i; |
a744cf53 | 8282 | |
224c3ddb | 8283 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8284 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8285 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8286 | { |
ea9c271d | 8287 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8288 | |
b323314b | 8289 | if (r->in_g_packet) |
34a79281 | 8290 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8291 | } |
8292 | } | |
c906108c SS |
8293 | |
8294 | /* Command describes registers byte by byte, | |
8295 | each byte encoded as two hex characters. */ | |
6d820c5c | 8296 | p = rs->buf; |
193cb69f | 8297 | *p++ = 'G'; |
74ca34ce | 8298 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
8299 | putpkt (rs->buf); |
8300 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8301 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
8302 | error (_("Could not write registers; remote failure reply '%s'"), |
8303 | rs->buf); | |
c906108c | 8304 | } |
74ca34ce DJ |
8305 | |
8306 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8307 | of the register cache buffer. FIXME: ignores errors. */ | |
8308 | ||
f6ac5f3d PA |
8309 | void |
8310 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8311 | { |
5cd63fda | 8312 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8313 | struct remote_state *rs = get_remote_state (); |
8314 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8315 | int i; |
8316 | ||
e6e4e701 | 8317 | set_remote_traceframe (); |
222312d3 | 8318 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8319 | |
8320 | if (regnum >= 0) | |
8321 | { | |
5cd63fda | 8322 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8323 | |
74ca34ce DJ |
8324 | gdb_assert (reg != NULL); |
8325 | ||
8326 | /* Always prefer to store registers using the 'P' packet if | |
8327 | possible; we often change only a small number of registers. | |
8328 | Sometimes we change a larger number; we'd need help from a | |
8329 | higher layer to know to use 'G'. */ | |
56be3814 | 8330 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8331 | return; |
8332 | ||
8333 | /* For now, don't complain if we have no way to write the | |
8334 | register. GDB loses track of unavailable registers too | |
8335 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8336 | any way to read the register, either... */ |
74ca34ce DJ |
8337 | if (!reg->in_g_packet) |
8338 | return; | |
8339 | ||
56be3814 | 8340 | store_registers_using_G (regcache); |
74ca34ce DJ |
8341 | return; |
8342 | } | |
8343 | ||
56be3814 | 8344 | store_registers_using_G (regcache); |
74ca34ce | 8345 | |
5cd63fda | 8346 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8347 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8348 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8349 | /* See above for why we do not issue an error here. */ |
8350 | continue; | |
8351 | } | |
c906108c SS |
8352 | \f |
8353 | ||
8354 | /* Return the number of hex digits in num. */ | |
8355 | ||
8356 | static int | |
fba45db2 | 8357 | hexnumlen (ULONGEST num) |
c906108c SS |
8358 | { |
8359 | int i; | |
8360 | ||
8361 | for (i = 0; num != 0; i++) | |
8362 | num >>= 4; | |
8363 | ||
325fac50 | 8364 | return std::max (i, 1); |
c906108c SS |
8365 | } |
8366 | ||
2df3850c | 8367 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8368 | |
8369 | static int | |
fba45db2 | 8370 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8371 | { |
c906108c | 8372 | int len = hexnumlen (num); |
a744cf53 | 8373 | |
2df3850c JM |
8374 | return hexnumnstr (buf, num, len); |
8375 | } | |
8376 | ||
c906108c | 8377 | |
2df3850c | 8378 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8379 | |
2df3850c | 8380 | static int |
fba45db2 | 8381 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8382 | { |
8383 | int i; | |
8384 | ||
8385 | buf[width] = '\0'; | |
8386 | ||
8387 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8388 | { |
c5aa993b | 8389 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8390 | num >>= 4; |
8391 | } | |
8392 | ||
2df3850c | 8393 | return width; |
c906108c SS |
8394 | } |
8395 | ||
23860348 | 8396 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8397 | |
8398 | static CORE_ADDR | |
fba45db2 | 8399 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8400 | { |
883b9c6c | 8401 | unsigned int address_size = remote_address_size; |
a744cf53 | 8402 | |
911c95a5 UW |
8403 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8404 | if (!address_size) | |
f5656ead | 8405 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8406 | |
8407 | if (address_size > 0 | |
8408 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8409 | { |
8410 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8411 | in a ULONGEST variable. */ |
c906108c | 8412 | ULONGEST mask = 1; |
a744cf53 | 8413 | |
911c95a5 | 8414 | mask = (mask << address_size) - 1; |
c906108c SS |
8415 | addr &= mask; |
8416 | } | |
8417 | return addr; | |
8418 | } | |
8419 | ||
8420 | /* Determine whether the remote target supports binary downloading. | |
8421 | This is accomplished by sending a no-op memory write of zero length | |
8422 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8423 | the whole packet, since many stubs strip the eighth bit and |
8424 | subsequently compute a wrong checksum, which causes real havoc with | |
8425 | remote_write_bytes. | |
7a292a7a | 8426 | |
96baa820 | 8427 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8428 | clean. In cases like this, the user should clear "remote |
23860348 | 8429 | X-packet". */ |
96baa820 | 8430 | |
6b8edb51 PA |
8431 | void |
8432 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8433 | { |
d01949b6 | 8434 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8435 | |
4082afcc | 8436 | switch (packet_support (PACKET_X)) |
c906108c | 8437 | { |
96baa820 JM |
8438 | case PACKET_DISABLE: |
8439 | break; | |
8440 | case PACKET_ENABLE: | |
8441 | break; | |
8442 | case PACKET_SUPPORT_UNKNOWN: | |
8443 | { | |
96baa820 | 8444 | char *p; |
802188a7 | 8445 | |
2e9f7625 | 8446 | p = rs->buf; |
96baa820 JM |
8447 | *p++ = 'X'; |
8448 | p += hexnumstr (p, (ULONGEST) addr); | |
8449 | *p++ = ','; | |
8450 | p += hexnumstr (p, (ULONGEST) 0); | |
8451 | *p++ = ':'; | |
8452 | *p = '\0'; | |
802188a7 | 8453 | |
2e9f7625 | 8454 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8455 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8456 | |
2e9f7625 | 8457 | if (rs->buf[0] == '\0') |
96baa820 JM |
8458 | { |
8459 | if (remote_debug) | |
8460 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8461 | "binary downloading NOT " |
8462 | "supported by target\n"); | |
444abaca | 8463 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8464 | } |
8465 | else | |
8466 | { | |
8467 | if (remote_debug) | |
8468 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8469 | "binary downloading supported by target\n"); |
444abaca | 8470 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8471 | } |
8472 | break; | |
8473 | } | |
c906108c SS |
8474 | } |
8475 | } | |
8476 | ||
124e13d9 SM |
8477 | /* Helper function to resize the payload in order to try to get a good |
8478 | alignment. We try to write an amount of data such that the next write will | |
8479 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8480 | ||
8481 | static int | |
8482 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8483 | { | |
8484 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8485 | } | |
8486 | ||
c906108c SS |
8487 | /* Write memory data directly to the remote machine. |
8488 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8489 | HEADER is the starting part of the packet. |
c906108c SS |
8490 | MEMADDR is the address in the remote memory space. |
8491 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8492 | LEN_UNITS is the number of addressable units to write. |
8493 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8494 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8495 | should send data as binary ('X'), or hex-encoded ('M'). | |
8496 | ||
8497 | The function creates packet of the form | |
8498 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8499 | ||
124e13d9 | 8500 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8501 | |
8502 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8503 | are omitted. | |
8504 | ||
9b409511 | 8505 | Return the transferred status, error or OK (an |
124e13d9 SM |
8506 | 'enum target_xfer_status' value). Save the number of addressable units |
8507 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8508 | ||
8509 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8510 | exchange between gdb and the stub could look like (?? in place of the | |
8511 | checksum): | |
8512 | ||
8513 | -> $m1000,4#?? | |
8514 | <- aaaabbbbccccdddd | |
8515 | ||
8516 | -> $M1000,3:eeeeffffeeee#?? | |
8517 | <- OK | |
8518 | ||
8519 | -> $m1000,4#?? | |
8520 | <- eeeeffffeeeedddd */ | |
c906108c | 8521 | |
6b8edb51 PA |
8522 | target_xfer_status |
8523 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8524 | const gdb_byte *myaddr, | |
8525 | ULONGEST len_units, | |
8526 | int unit_size, | |
8527 | ULONGEST *xfered_len_units, | |
8528 | char packet_format, int use_length) | |
c906108c | 8529 | { |
6d820c5c | 8530 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8531 | char *p; |
a76d924d DJ |
8532 | char *plen = NULL; |
8533 | int plenlen = 0; | |
124e13d9 SM |
8534 | int todo_units; |
8535 | int units_written; | |
8536 | int payload_capacity_bytes; | |
8537 | int payload_length_bytes; | |
a76d924d DJ |
8538 | |
8539 | if (packet_format != 'X' && packet_format != 'M') | |
8540 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8541 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8542 | |
124e13d9 | 8543 | if (len_units == 0) |
9b409511 | 8544 | return TARGET_XFER_EOF; |
b2182ed2 | 8545 | |
124e13d9 | 8546 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8547 | |
6d820c5c DJ |
8548 | /* The packet buffer will be large enough for the payload; |
8549 | get_memory_packet_size ensures this. */ | |
a76d924d | 8550 | rs->buf[0] = '\0'; |
c906108c | 8551 | |
a257b5bb | 8552 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8553 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8554 | ||
124e13d9 | 8555 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8556 | if (!use_length) |
0df8b418 | 8557 | /* The comma won't be used. */ |
124e13d9 SM |
8558 | payload_capacity_bytes += 1; |
8559 | payload_capacity_bytes -= strlen (header); | |
8560 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8561 | |
a76d924d | 8562 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8563 | |
a76d924d DJ |
8564 | strcat (rs->buf, header); |
8565 | p = rs->buf + strlen (header); | |
8566 | ||
8567 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8568 | if (packet_format == 'X') | |
c906108c | 8569 | { |
23860348 | 8570 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8571 | todo_units = std::min (len_units, |
8572 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8573 | if (use_length) |
124e13d9 | 8574 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8575 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8576 | } |
8577 | else | |
8578 | { | |
124e13d9 | 8579 | /* Number of bytes that will fit. */ |
325fac50 PA |
8580 | todo_units |
8581 | = std::min (len_units, | |
8582 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8583 | if (use_length) |
124e13d9 | 8584 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8585 | todo_units = std::min (todo_units, |
8586 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8587 | } |
a76d924d | 8588 | |
124e13d9 | 8589 | if (todo_units <= 0) |
3de11b2e | 8590 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8591 | _("minimum packet size too small to write data")); |
802188a7 | 8592 | |
6765f3e5 DJ |
8593 | /* If we already need another packet, then try to align the end |
8594 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8595 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8596 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8597 | |
a257b5bb | 8598 | /* Append "<memaddr>". */ |
917317f4 JM |
8599 | memaddr = remote_address_masked (memaddr); |
8600 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8601 | |
a76d924d DJ |
8602 | if (use_length) |
8603 | { | |
8604 | /* Append ",". */ | |
8605 | *p++ = ','; | |
802188a7 | 8606 | |
124e13d9 SM |
8607 | /* Append the length and retain its location and size. It may need to be |
8608 | adjusted once the packet body has been created. */ | |
a76d924d | 8609 | plen = p; |
124e13d9 | 8610 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8611 | p += plenlen; |
8612 | } | |
a257b5bb AC |
8613 | |
8614 | /* Append ":". */ | |
917317f4 JM |
8615 | *p++ = ':'; |
8616 | *p = '\0'; | |
802188a7 | 8617 | |
a257b5bb | 8618 | /* Append the packet body. */ |
a76d924d | 8619 | if (packet_format == 'X') |
917317f4 | 8620 | { |
917317f4 JM |
8621 | /* Binary mode. Send target system values byte by byte, in |
8622 | increasing byte addresses. Only escape certain critical | |
8623 | characters. */ | |
124e13d9 SM |
8624 | payload_length_bytes = |
8625 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8626 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8627 | |
124e13d9 | 8628 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8629 | a second try to keep the end of the packet aligned. Don't do |
8630 | this if the packet is tiny. */ | |
124e13d9 | 8631 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8632 | { |
124e13d9 SM |
8633 | int new_todo_units; |
8634 | ||
8635 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8636 | ||
8637 | if (new_todo_units != units_written) | |
8638 | payload_length_bytes = | |
8639 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8640 | (gdb_byte *) p, &units_written, | |
8641 | payload_capacity_bytes); | |
6765f3e5 DJ |
8642 | } |
8643 | ||
124e13d9 SM |
8644 | p += payload_length_bytes; |
8645 | if (use_length && units_written < todo_units) | |
c906108c | 8646 | { |
802188a7 | 8647 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8648 | and we have actually sent fewer units than planned. |
917317f4 JM |
8649 | Fix-up the length field of the packet. Use the same |
8650 | number of characters as before. */ | |
124e13d9 SM |
8651 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8652 | plenlen); | |
917317f4 | 8653 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8654 | } |
a76d924d DJ |
8655 | } |
8656 | else | |
8657 | { | |
917317f4 JM |
8658 | /* Normal mode: Send target system values byte by byte, in |
8659 | increasing byte addresses. Each byte is encoded as a two hex | |
8660 | value. */ | |
124e13d9 SM |
8661 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8662 | units_written = todo_units; | |
c906108c | 8663 | } |
802188a7 | 8664 | |
2e9f7625 | 8665 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8666 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8667 | |
2e9f7625 | 8668 | if (rs->buf[0] == 'E') |
00d84524 | 8669 | return TARGET_XFER_E_IO; |
802188a7 | 8670 | |
124e13d9 SM |
8671 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8672 | send fewer units than we'd planned. */ | |
8673 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8674 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8675 | } |
8676 | ||
a76d924d DJ |
8677 | /* Write memory data directly to the remote machine. |
8678 | This does not inform the data cache; the data cache uses this. | |
8679 | MEMADDR is the address in the remote memory space. | |
8680 | MYADDR is the address of the buffer in our space. | |
8681 | LEN is the number of bytes. | |
8682 | ||
9b409511 YQ |
8683 | Return the transferred status, error or OK (an |
8684 | 'enum target_xfer_status' value). Save the number of bytes | |
8685 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8686 | |
6b8edb51 PA |
8687 | target_xfer_status |
8688 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
8689 | ULONGEST len, int unit_size, | |
8690 | ULONGEST *xfered_len) | |
a76d924d | 8691 | { |
a121b7c1 | 8692 | const char *packet_format = NULL; |
a76d924d DJ |
8693 | |
8694 | /* Check whether the target supports binary download. */ | |
8695 | check_binary_download (memaddr); | |
8696 | ||
4082afcc | 8697 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8698 | { |
8699 | case PACKET_ENABLE: | |
8700 | packet_format = "X"; | |
8701 | break; | |
8702 | case PACKET_DISABLE: | |
8703 | packet_format = "M"; | |
8704 | break; | |
8705 | case PACKET_SUPPORT_UNKNOWN: | |
8706 | internal_error (__FILE__, __LINE__, | |
8707 | _("remote_write_bytes: bad internal state")); | |
8708 | default: | |
8709 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8710 | } | |
8711 | ||
8712 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8713 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8714 | packet_format[0], 1); |
a76d924d DJ |
8715 | } |
8716 | ||
9217e74e YQ |
8717 | /* Read memory data directly from the remote machine. |
8718 | This does not use the data cache; the data cache uses this. | |
8719 | MEMADDR is the address in the remote memory space. | |
8720 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8721 | LEN_UNITS is the number of addressable memory units to read.. |
8722 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8723 | |
8724 | Return the transferred status, error or OK (an | |
8725 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8726 | transferred in *XFERED_LEN_UNITS. |
8727 | ||
8728 | See the comment of remote_write_bytes_aux for an example of | |
8729 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 8730 | |
6b8edb51 PA |
8731 | target_xfer_status |
8732 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
8733 | ULONGEST len_units, | |
8734 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8735 | { |
8736 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8737 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8738 | char *p; |
124e13d9 SM |
8739 | int todo_units; |
8740 | int decoded_bytes; | |
9217e74e | 8741 | |
124e13d9 | 8742 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8743 | /* The packet buffer will be large enough for the payload; |
8744 | get_memory_packet_size ensures this. */ | |
8745 | ||
124e13d9 | 8746 | /* Number of units that will fit. */ |
325fac50 PA |
8747 | todo_units = std::min (len_units, |
8748 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8749 | |
8750 | /* Construct "m"<memaddr>","<len>". */ | |
8751 | memaddr = remote_address_masked (memaddr); | |
8752 | p = rs->buf; | |
8753 | *p++ = 'm'; | |
8754 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8755 | *p++ = ','; | |
124e13d9 | 8756 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8757 | *p = '\0'; |
8758 | putpkt (rs->buf); | |
8759 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8760 | if (rs->buf[0] == 'E' | |
8761 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8762 | && rs->buf[3] == '\0') | |
8763 | return TARGET_XFER_E_IO; | |
8764 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8765 | characters. */ | |
8766 | p = rs->buf; | |
124e13d9 | 8767 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8768 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8769 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8770 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8771 | } |
8772 | ||
b55fbac4 YQ |
8773 | /* Using the set of read-only target sections of remote, read live |
8774 | read-only memory. | |
8acf9577 YQ |
8775 | |
8776 | For interface/parameters/return description see target.h, | |
8777 | to_xfer_partial. */ | |
8778 | ||
6b8edb51 PA |
8779 | target_xfer_status |
8780 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
8781 | ULONGEST memaddr, | |
8782 | ULONGEST len, | |
8783 | int unit_size, | |
8784 | ULONGEST *xfered_len) | |
8acf9577 YQ |
8785 | { |
8786 | struct target_section *secp; | |
8787 | struct target_section_table *table; | |
8788 | ||
6b8edb51 | 8789 | secp = target_section_by_addr (this, memaddr); |
8acf9577 YQ |
8790 | if (secp != NULL |
8791 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8792 | secp->the_bfd_section) | |
8793 | & SEC_READONLY)) | |
8794 | { | |
8795 | struct target_section *p; | |
8796 | ULONGEST memend = memaddr + len; | |
8797 | ||
6b8edb51 | 8798 | table = target_get_section_table (this); |
8acf9577 YQ |
8799 | |
8800 | for (p = table->sections; p < table->sections_end; p++) | |
8801 | { | |
8802 | if (memaddr >= p->addr) | |
8803 | { | |
8804 | if (memend <= p->endaddr) | |
8805 | { | |
8806 | /* Entire transfer is within this section. */ | |
124e13d9 | 8807 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8808 | xfered_len); |
8acf9577 YQ |
8809 | } |
8810 | else if (memaddr >= p->endaddr) | |
8811 | { | |
8812 | /* This section ends before the transfer starts. */ | |
8813 | continue; | |
8814 | } | |
8815 | else | |
8816 | { | |
8817 | /* This section overlaps the transfer. Just do half. */ | |
8818 | len = p->endaddr - memaddr; | |
124e13d9 | 8819 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8820 | xfered_len); |
8acf9577 YQ |
8821 | } |
8822 | } | |
8823 | } | |
8824 | } | |
8825 | ||
8826 | return TARGET_XFER_EOF; | |
8827 | } | |
8828 | ||
9217e74e YQ |
8829 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8830 | first if the requested memory is unavailable in traceframe. | |
8831 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8832 | |
6b8edb51 PA |
8833 | target_xfer_status |
8834 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
8835 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
8836 | ULONGEST *xfered_len) | |
c906108c | 8837 | { |
6b6aa828 | 8838 | if (len == 0) |
96c4f946 | 8839 | return TARGET_XFER_EOF; |
b2182ed2 | 8840 | |
8acf9577 YQ |
8841 | if (get_traceframe_number () != -1) |
8842 | { | |
a79b1bc6 | 8843 | std::vector<mem_range> available; |
8acf9577 YQ |
8844 | |
8845 | /* If we fail to get the set of available memory, then the | |
8846 | target does not support querying traceframe info, and so we | |
8847 | attempt reading from the traceframe anyway (assuming the | |
8848 | target implements the old QTro packet then). */ | |
8849 | if (traceframe_available_memory (&available, memaddr, len)) | |
8850 | { | |
a79b1bc6 | 8851 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8852 | { |
8853 | enum target_xfer_status res; | |
8854 | ||
8855 | /* Don't read into the traceframe's available | |
8856 | memory. */ | |
a79b1bc6 | 8857 | if (!available.empty ()) |
8acf9577 YQ |
8858 | { |
8859 | LONGEST oldlen = len; | |
8860 | ||
a79b1bc6 | 8861 | len = available[0].start - memaddr; |
8acf9577 YQ |
8862 | gdb_assert (len <= oldlen); |
8863 | } | |
8864 | ||
8acf9577 | 8865 | /* This goes through the topmost target again. */ |
6b8edb51 | 8866 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 8867 | len, unit_size, xfered_len); |
8acf9577 YQ |
8868 | if (res == TARGET_XFER_OK) |
8869 | return TARGET_XFER_OK; | |
8870 | else | |
8871 | { | |
8872 | /* No use trying further, we know some memory starting | |
8873 | at MEMADDR isn't available. */ | |
8874 | *xfered_len = len; | |
92ffd475 PC |
8875 | return (*xfered_len != 0) ? |
8876 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8877 | } |
8878 | } | |
8879 | ||
8880 | /* Don't try to read more than how much is available, in | |
8881 | case the target implements the deprecated QTro packet to | |
8882 | cater for older GDBs (the target's knowledge of read-only | |
8883 | sections may be outdated by now). */ | |
a79b1bc6 | 8884 | len = available[0].length; |
8acf9577 YQ |
8885 | } |
8886 | } | |
8887 | ||
124e13d9 | 8888 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8889 | } |
74531fed | 8890 | |
c906108c | 8891 | \f |
c906108c | 8892 | |
a76d924d DJ |
8893 | /* Sends a packet with content determined by the printf format string |
8894 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8895 | whether the packet was a success, a failure, or unknown. */ | |
8896 | ||
6b8edb51 PA |
8897 | packet_result |
8898 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
8899 | { |
8900 | struct remote_state *rs = get_remote_state (); | |
8901 | int max_size = get_remote_packet_size (); | |
a76d924d | 8902 | va_list ap; |
a744cf53 | 8903 | |
a76d924d DJ |
8904 | va_start (ap, format); |
8905 | ||
8906 | rs->buf[0] = '\0'; | |
8907 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8908 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8909 | |
8910 | if (putpkt (rs->buf) < 0) | |
8911 | error (_("Communication problem with target.")); | |
8912 | ||
8913 | rs->buf[0] = '\0'; | |
8914 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8915 | ||
8916 | return packet_check_result (rs->buf); | |
8917 | } | |
8918 | ||
a76d924d DJ |
8919 | /* Flash writing can take quite some time. We'll set |
8920 | effectively infinite timeout for flash operations. | |
8921 | In future, we'll need to decide on a better approach. */ | |
8922 | static const int remote_flash_timeout = 1000; | |
8923 | ||
f6ac5f3d PA |
8924 | void |
8925 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 8926 | { |
f5656ead | 8927 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8928 | enum packet_result ret; |
2ec845e7 TT |
8929 | scoped_restore restore_timeout |
8930 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8931 | |
8932 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8933 | phex (address, addr_size), |
a76d924d DJ |
8934 | phex (length, 4)); |
8935 | switch (ret) | |
8936 | { | |
8937 | case PACKET_UNKNOWN: | |
8938 | error (_("Remote target does not support flash erase")); | |
8939 | case PACKET_ERROR: | |
8940 | error (_("Error erasing flash with vFlashErase packet")); | |
8941 | default: | |
8942 | break; | |
8943 | } | |
a76d924d DJ |
8944 | } |
8945 | ||
6b8edb51 PA |
8946 | target_xfer_status |
8947 | remote_target::remote_flash_write (ULONGEST address, | |
8948 | ULONGEST length, ULONGEST *xfered_len, | |
8949 | const gdb_byte *data) | |
a76d924d | 8950 | { |
2ec845e7 TT |
8951 | scoped_restore restore_timeout |
8952 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8953 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8954 | xfered_len,'X', 0); | |
a76d924d DJ |
8955 | } |
8956 | ||
f6ac5f3d PA |
8957 | void |
8958 | remote_target::flash_done () | |
a76d924d | 8959 | { |
a76d924d | 8960 | int ret; |
a76d924d | 8961 | |
2ec845e7 TT |
8962 | scoped_restore restore_timeout |
8963 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8964 | ||
a76d924d | 8965 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8966 | |
8967 | switch (ret) | |
8968 | { | |
8969 | case PACKET_UNKNOWN: | |
8970 | error (_("Remote target does not support vFlashDone")); | |
8971 | case PACKET_ERROR: | |
8972 | error (_("Error finishing flash operation")); | |
8973 | default: | |
8974 | break; | |
8975 | } | |
8976 | } | |
8977 | ||
f6ac5f3d PA |
8978 | void |
8979 | remote_target::files_info () | |
c906108c SS |
8980 | { |
8981 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8982 | } | |
8983 | \f | |
8984 | /* Stuff for dealing with the packets which are part of this protocol. | |
8985 | See comment at top of file for details. */ | |
8986 | ||
1927e618 PA |
8987 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8988 | error to higher layers. Called when a serial error is detected. | |
8989 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8990 | the system error message for errno at function entry and final dot |
8991 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8992 | |
8993 | static void | |
8994 | unpush_and_perror (const char *string) | |
8995 | { | |
d6cb50a2 | 8996 | int saved_errno = errno; |
1927e618 PA |
8997 | |
8998 | remote_unpush_target (); | |
d6cb50a2 JK |
8999 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9000 | safe_strerror (saved_errno)); | |
1927e618 PA |
9001 | } |
9002 | ||
048094ac PA |
9003 | /* Read a single character from the remote end. The current quit |
9004 | handler is overridden to avoid quitting in the middle of packet | |
9005 | sequence, as that would break communication with the remote server. | |
9006 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9007 | |
6b8edb51 PA |
9008 | int |
9009 | remote_target::readchar (int timeout) | |
c906108c SS |
9010 | { |
9011 | int ch; | |
5d93a237 | 9012 | struct remote_state *rs = get_remote_state (); |
048094ac | 9013 | |
2ec845e7 | 9014 | { |
6b8edb51 PA |
9015 | scoped_restore restore_quit_target |
9016 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9017 | scoped_restore restore_quit |
6b8edb51 | 9018 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9019 | |
2ec845e7 | 9020 | rs->got_ctrlc_during_io = 0; |
c906108c | 9021 | |
2ec845e7 | 9022 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9023 | |
2ec845e7 TT |
9024 | if (rs->got_ctrlc_during_io) |
9025 | set_quit_flag (); | |
9026 | } | |
048094ac | 9027 | |
2acceee2 | 9028 | if (ch >= 0) |
0876f84a | 9029 | return ch; |
2acceee2 JM |
9030 | |
9031 | switch ((enum serial_rc) ch) | |
c906108c SS |
9032 | { |
9033 | case SERIAL_EOF: | |
78a095c3 | 9034 | remote_unpush_target (); |
598d3636 | 9035 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9036 | /* no return */ |
c906108c | 9037 | case SERIAL_ERROR: |
1927e618 PA |
9038 | unpush_and_perror (_("Remote communication error. " |
9039 | "Target disconnected.")); | |
2acceee2 | 9040 | /* no return */ |
c906108c | 9041 | case SERIAL_TIMEOUT: |
2acceee2 | 9042 | break; |
c906108c | 9043 | } |
2acceee2 | 9044 | return ch; |
c906108c SS |
9045 | } |
9046 | ||
c33e31fd | 9047 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9048 | writing fails. The current quit handler is overridden to avoid |
9049 | quitting in the middle of packet sequence, as that would break | |
9050 | communication with the remote server. See | |
9051 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9052 | |
6b8edb51 PA |
9053 | void |
9054 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9055 | { |
5d93a237 | 9056 | struct remote_state *rs = get_remote_state (); |
048094ac | 9057 | |
6b8edb51 PA |
9058 | scoped_restore restore_quit_target |
9059 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9060 | scoped_restore restore_quit |
6b8edb51 | 9061 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9062 | |
9063 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9064 | |
9065 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9066 | { |
1927e618 PA |
9067 | unpush_and_perror (_("Remote communication error. " |
9068 | "Target disconnected.")); | |
c33e31fd | 9069 | } |
048094ac PA |
9070 | |
9071 | if (rs->got_ctrlc_during_io) | |
9072 | set_quit_flag (); | |
c33e31fd PA |
9073 | } |
9074 | ||
b3ced9ba PA |
9075 | /* Return a string representing an escaped version of BUF, of len N. |
9076 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9077 | |
b3ced9ba | 9078 | static std::string |
6e5abd65 PA |
9079 | escape_buffer (const char *buf, int n) |
9080 | { | |
d7e74731 | 9081 | string_file stb; |
6e5abd65 | 9082 | |
d7e74731 PA |
9083 | stb.putstrn (buf, n, '\\'); |
9084 | return std::move (stb.string ()); | |
6e5abd65 PA |
9085 | } |
9086 | ||
c906108c SS |
9087 | /* Display a null-terminated packet on stdout, for debugging, using C |
9088 | string notation. */ | |
9089 | ||
9090 | static void | |
baa336ce | 9091 | print_packet (const char *buf) |
c906108c SS |
9092 | { |
9093 | puts_filtered ("\""); | |
43e526b9 | 9094 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9095 | puts_filtered ("\""); |
9096 | } | |
9097 | ||
9098 | int | |
6b8edb51 | 9099 | remote_target::putpkt (const char *buf) |
c906108c SS |
9100 | { |
9101 | return putpkt_binary (buf, strlen (buf)); | |
9102 | } | |
9103 | ||
6b8edb51 PA |
9104 | /* Wrapper around remote_target::putpkt to avoid exporting |
9105 | remote_target. */ | |
9106 | ||
9107 | int | |
9108 | putpkt (remote_target *remote, const char *buf) | |
9109 | { | |
9110 | return remote->putpkt (buf); | |
9111 | } | |
9112 | ||
c906108c | 9113 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9114 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9115 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9116 | and for a possible /0 if we are debugging (remote_debug) and want |
9117 | to print the sent packet as a string. */ | |
c906108c | 9118 | |
6b8edb51 PA |
9119 | int |
9120 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9121 | { |
2d717e4f | 9122 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9123 | int i; |
9124 | unsigned char csum = 0; | |
b80406ac TT |
9125 | gdb::def_vector<char> data (cnt + 6); |
9126 | char *buf2 = data.data (); | |
085dd6e6 | 9127 | |
c906108c SS |
9128 | int ch; |
9129 | int tcount = 0; | |
9130 | char *p; | |
9131 | ||
e24a49d8 PA |
9132 | /* Catch cases like trying to read memory or listing threads while |
9133 | we're waiting for a stop reply. The remote server wouldn't be | |
9134 | ready to handle this request, so we'd hang and timeout. We don't | |
9135 | have to worry about this in synchronous mode, because in that | |
9136 | case it's not possible to issue a command while the target is | |
74531fed PA |
9137 | running. This is not a problem in non-stop mode, because in that |
9138 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9139 | if (!target_is_non_stop_p () |
9140 | && target_is_async_p () | |
9141 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9142 | { |
9143 | error (_("Cannot execute this command while the target is running.\n" | |
9144 | "Use the \"interrupt\" command to stop the target\n" | |
9145 | "and then try again.")); | |
9146 | } | |
e24a49d8 | 9147 | |
2d717e4f DJ |
9148 | /* We're sending out a new packet. Make sure we don't look at a |
9149 | stale cached response. */ | |
9150 | rs->cached_wait_status = 0; | |
9151 | ||
c906108c SS |
9152 | /* Copy the packet into buffer BUF2, encapsulating it |
9153 | and giving it a checksum. */ | |
9154 | ||
c906108c SS |
9155 | p = buf2; |
9156 | *p++ = '$'; | |
9157 | ||
9158 | for (i = 0; i < cnt; i++) | |
9159 | { | |
9160 | csum += buf[i]; | |
9161 | *p++ = buf[i]; | |
9162 | } | |
9163 | *p++ = '#'; | |
9164 | *p++ = tohex ((csum >> 4) & 0xf); | |
9165 | *p++ = tohex (csum & 0xf); | |
9166 | ||
9167 | /* Send it over and over until we get a positive ack. */ | |
9168 | ||
9169 | while (1) | |
9170 | { | |
9171 | int started_error_output = 0; | |
9172 | ||
9173 | if (remote_debug) | |
9174 | { | |
9175 | *p = '\0'; | |
b3ced9ba | 9176 | |
6f8976bf YQ |
9177 | int len = (int) (p - buf2); |
9178 | ||
9179 | std::string str | |
9180 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
9181 | ||
9182 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9183 | ||
567a3e54 SM |
9184 | if (len > REMOTE_DEBUG_MAX_CHAR) |
9185 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9186 | len - REMOTE_DEBUG_MAX_CHAR); | |
6f8976bf YQ |
9187 | |
9188 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9189 | |
0f71a2f6 | 9190 | gdb_flush (gdb_stdlog); |
c906108c | 9191 | } |
c33e31fd | 9192 | remote_serial_write (buf2, p - buf2); |
c906108c | 9193 | |
a6f3e723 SL |
9194 | /* If this is a no acks version of the remote protocol, send the |
9195 | packet and move on. */ | |
9196 | if (rs->noack_mode) | |
9197 | break; | |
9198 | ||
74531fed PA |
9199 | /* Read until either a timeout occurs (-2) or '+' is read. |
9200 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9201 | while (1) |
9202 | { | |
9203 | ch = readchar (remote_timeout); | |
9204 | ||
c5aa993b | 9205 | if (remote_debug) |
c906108c SS |
9206 | { |
9207 | switch (ch) | |
9208 | { | |
9209 | case '+': | |
1216fa2c | 9210 | case '-': |
c906108c SS |
9211 | case SERIAL_TIMEOUT: |
9212 | case '$': | |
74531fed | 9213 | case '%': |
c906108c SS |
9214 | if (started_error_output) |
9215 | { | |
9216 | putchar_unfiltered ('\n'); | |
9217 | started_error_output = 0; | |
9218 | } | |
9219 | } | |
9220 | } | |
9221 | ||
9222 | switch (ch) | |
9223 | { | |
9224 | case '+': | |
9225 | if (remote_debug) | |
0f71a2f6 | 9226 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9227 | return 1; |
1216fa2c AC |
9228 | case '-': |
9229 | if (remote_debug) | |
9230 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9231 | /* FALLTHROUGH */ |
c906108c | 9232 | case SERIAL_TIMEOUT: |
c5aa993b | 9233 | tcount++; |
c906108c | 9234 | if (tcount > 3) |
b80406ac | 9235 | return 0; |
23860348 | 9236 | break; /* Retransmit buffer. */ |
c906108c SS |
9237 | case '$': |
9238 | { | |
40e3f985 | 9239 | if (remote_debug) |
2bc416ba | 9240 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9241 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9242 | /* It's probably an old response sent because an ACK |
9243 | was lost. Gobble up the packet and ack it so it | |
9244 | doesn't get retransmitted when we resend this | |
9245 | packet. */ | |
6d820c5c | 9246 | skip_frame (); |
c33e31fd | 9247 | remote_serial_write ("+", 1); |
23860348 | 9248 | continue; /* Now, go look for +. */ |
c906108c | 9249 | } |
74531fed PA |
9250 | |
9251 | case '%': | |
9252 | { | |
9253 | int val; | |
9254 | ||
9255 | /* If we got a notification, handle it, and go back to looking | |
9256 | for an ack. */ | |
9257 | /* We've found the start of a notification. Now | |
9258 | collect the data. */ | |
9259 | val = read_frame (&rs->buf, &rs->buf_size); | |
9260 | if (val >= 0) | |
9261 | { | |
9262 | if (remote_debug) | |
9263 | { | |
b3ced9ba | 9264 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 9265 | |
6e5abd65 PA |
9266 | fprintf_unfiltered (gdb_stdlog, |
9267 | " Notification received: %s\n", | |
b3ced9ba | 9268 | str.c_str ()); |
74531fed | 9269 | } |
5965e028 | 9270 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
9271 | /* We're in sync now, rewait for the ack. */ |
9272 | tcount = 0; | |
9273 | } | |
9274 | else | |
9275 | { | |
9276 | if (remote_debug) | |
9277 | { | |
9278 | if (!started_error_output) | |
9279 | { | |
9280 | started_error_output = 1; | |
9281 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9282 | } | |
9283 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
9284 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
9285 | } | |
9286 | } | |
9287 | continue; | |
9288 | } | |
9289 | /* fall-through */ | |
c906108c SS |
9290 | default: |
9291 | if (remote_debug) | |
9292 | { | |
9293 | if (!started_error_output) | |
9294 | { | |
9295 | started_error_output = 1; | |
0f71a2f6 | 9296 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9297 | } |
0f71a2f6 | 9298 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9299 | } |
9300 | continue; | |
9301 | } | |
23860348 | 9302 | break; /* Here to retransmit. */ |
c906108c SS |
9303 | } |
9304 | ||
9305 | #if 0 | |
9306 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
9307 | able to get out next time we call QUIT, without anything as |
9308 | violent as interrupt_query. If we want to provide a way out of | |
9309 | here without getting to the next QUIT, it should be based on | |
9310 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9311 | if (quit_flag) |
9312 | { | |
9313 | quit_flag = 0; | |
9314 | interrupt_query (); | |
9315 | } | |
9316 | #endif | |
9317 | } | |
a5c0808e | 9318 | |
a6f3e723 | 9319 | return 0; |
c906108c SS |
9320 | } |
9321 | ||
6d820c5c DJ |
9322 | /* Come here after finding the start of a frame when we expected an |
9323 | ack. Do our best to discard the rest of this packet. */ | |
9324 | ||
6b8edb51 PA |
9325 | void |
9326 | remote_target::skip_frame () | |
6d820c5c DJ |
9327 | { |
9328 | int c; | |
9329 | ||
9330 | while (1) | |
9331 | { | |
9332 | c = readchar (remote_timeout); | |
9333 | switch (c) | |
9334 | { | |
9335 | case SERIAL_TIMEOUT: | |
9336 | /* Nothing we can do. */ | |
9337 | return; | |
9338 | case '#': | |
9339 | /* Discard the two bytes of checksum and stop. */ | |
9340 | c = readchar (remote_timeout); | |
9341 | if (c >= 0) | |
9342 | c = readchar (remote_timeout); | |
9343 | ||
9344 | return; | |
9345 | case '*': /* Run length encoding. */ | |
9346 | /* Discard the repeat count. */ | |
9347 | c = readchar (remote_timeout); | |
9348 | if (c < 0) | |
9349 | return; | |
9350 | break; | |
9351 | default: | |
9352 | /* A regular character. */ | |
9353 | break; | |
9354 | } | |
9355 | } | |
9356 | } | |
9357 | ||
c906108c | 9358 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9359 | into *BUF, verifying the checksum, length, and handling run-length |
9360 | compression. NUL terminate the buffer. If there is not enough room, | |
9361 | expand *BUF using xrealloc. | |
c906108c | 9362 | |
c2d11a7d JM |
9363 | Returns -1 on error, number of characters in buffer (ignoring the |
9364 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9365 | SERIAL status indications). */ |
c2d11a7d | 9366 | |
6b8edb51 PA |
9367 | long |
9368 | remote_target::read_frame (char **buf_p, long *sizeof_buf) | |
c906108c SS |
9369 | { |
9370 | unsigned char csum; | |
c2d11a7d | 9371 | long bc; |
c906108c | 9372 | int c; |
6d820c5c | 9373 | char *buf = *buf_p; |
a6f3e723 | 9374 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9375 | |
9376 | csum = 0; | |
c2d11a7d | 9377 | bc = 0; |
c906108c SS |
9378 | |
9379 | while (1) | |
9380 | { | |
9381 | c = readchar (remote_timeout); | |
c906108c SS |
9382 | switch (c) |
9383 | { | |
9384 | case SERIAL_TIMEOUT: | |
9385 | if (remote_debug) | |
0f71a2f6 | 9386 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9387 | return -1; |
c906108c SS |
9388 | case '$': |
9389 | if (remote_debug) | |
0f71a2f6 JM |
9390 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9391 | gdb_stdlog); | |
23860348 | 9392 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9393 | case '#': |
9394 | { | |
9395 | unsigned char pktcsum; | |
e1b09194 AC |
9396 | int check_0 = 0; |
9397 | int check_1 = 0; | |
c906108c | 9398 | |
c2d11a7d | 9399 | buf[bc] = '\0'; |
c906108c | 9400 | |
e1b09194 AC |
9401 | check_0 = readchar (remote_timeout); |
9402 | if (check_0 >= 0) | |
9403 | check_1 = readchar (remote_timeout); | |
802188a7 | 9404 | |
e1b09194 AC |
9405 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9406 | { | |
9407 | if (remote_debug) | |
2bc416ba | 9408 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9409 | gdb_stdlog); |
e1b09194 AC |
9410 | return -1; |
9411 | } | |
9412 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9413 | { |
9414 | if (remote_debug) | |
2bc416ba | 9415 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9416 | gdb_stdlog); |
40e3f985 FN |
9417 | return -1; |
9418 | } | |
c906108c | 9419 | |
a6f3e723 SL |
9420 | /* Don't recompute the checksum; with no ack packets we |
9421 | don't have any way to indicate a packet retransmission | |
9422 | is necessary. */ | |
9423 | if (rs->noack_mode) | |
9424 | return bc; | |
9425 | ||
e1b09194 | 9426 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9427 | if (csum == pktcsum) |
c2d11a7d | 9428 | return bc; |
c906108c | 9429 | |
c5aa993b | 9430 | if (remote_debug) |
c906108c | 9431 | { |
b3ced9ba | 9432 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9433 | |
6e5abd65 | 9434 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9435 | "Bad checksum, sentsum=0x%x, " |
9436 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9437 | pktcsum, csum, str.c_str ()); |
c906108c | 9438 | } |
c2d11a7d | 9439 | /* Number of characters in buffer ignoring trailing |
23860348 | 9440 | NULL. */ |
c2d11a7d | 9441 | return -1; |
c906108c | 9442 | } |
23860348 | 9443 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9444 | { |
9445 | int repeat; | |
c906108c | 9446 | |
a744cf53 | 9447 | csum += c; |
b4501125 AC |
9448 | c = readchar (remote_timeout); |
9449 | csum += c; | |
23860348 | 9450 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9451 | |
23860348 | 9452 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9453 | |
6d820c5c | 9454 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9455 | { |
6d820c5c DJ |
9456 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
9457 | { | |
9458 | /* Make some more room in the buffer. */ | |
9459 | *sizeof_buf += repeat; | |
224c3ddb | 9460 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9461 | buf = *buf_p; |
9462 | } | |
9463 | ||
c2d11a7d JM |
9464 | memset (&buf[bc], buf[bc - 1], repeat); |
9465 | bc += repeat; | |
c2c6d25f JM |
9466 | continue; |
9467 | } | |
9468 | ||
c2d11a7d | 9469 | buf[bc] = '\0'; |
6d820c5c | 9470 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9471 | return -1; |
c2c6d25f | 9472 | } |
c906108c | 9473 | default: |
6d820c5c | 9474 | if (bc >= *sizeof_buf - 1) |
c906108c | 9475 | { |
6d820c5c DJ |
9476 | /* Make some more room in the buffer. */ |
9477 | *sizeof_buf *= 2; | |
224c3ddb | 9478 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9479 | buf = *buf_p; |
c906108c SS |
9480 | } |
9481 | ||
6d820c5c DJ |
9482 | buf[bc++] = c; |
9483 | csum += c; | |
9484 | continue; | |
c906108c SS |
9485 | } |
9486 | } | |
9487 | } | |
9488 | ||
9489 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9490 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9491 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9492 | rather than timing out; this is used (in synchronous mode) to wait | |
9493 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9494 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9495 | don't have to change all the calls to getpkt to deal with the | |
9496 | return value, because at the moment I don't know what the right | |
23860348 | 9497 | thing to do it for those. */ |
6b8edb51 | 9498 | |
c906108c | 9499 | void |
6b8edb51 | 9500 | remote_target::getpkt (char **buf, long *sizeof_buf, int forever) |
d9fcf2fb | 9501 | { |
54887903 | 9502 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9503 | } |
9504 | ||
9505 | ||
9506 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9507 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9508 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9509 | rather than timing out; this is used (in synchronous mode) to wait | |
9510 | for a target that is is executing user code to stop. If FOREVER == | |
9511 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9512 | indication of this to the caller. Otherwise return the number of |
9513 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9514 | enough reason to return to the caller. *IS_NOTIF is an output |
9515 | boolean that indicates whether *BUF holds a notification or not | |
9516 | (a regular packet). */ | |
74531fed | 9517 | |
6b8edb51 PA |
9518 | int |
9519 | remote_target::getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, | |
9520 | int forever, int expecting_notif, | |
9521 | int *is_notif) | |
c906108c | 9522 | { |
2d717e4f | 9523 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9524 | int c; |
9525 | int tries; | |
9526 | int timeout; | |
df4b58fe | 9527 | int val = -1; |
c906108c | 9528 | |
2d717e4f DJ |
9529 | /* We're reading a new response. Make sure we don't look at a |
9530 | previously cached response. */ | |
9531 | rs->cached_wait_status = 0; | |
9532 | ||
6d820c5c | 9533 | strcpy (*buf, "timeout"); |
c906108c SS |
9534 | |
9535 | if (forever) | |
74531fed PA |
9536 | timeout = watchdog > 0 ? watchdog : -1; |
9537 | else if (expecting_notif) | |
9538 | timeout = 0; /* There should already be a char in the buffer. If | |
9539 | not, bail out. */ | |
c906108c SS |
9540 | else |
9541 | timeout = remote_timeout; | |
9542 | ||
9543 | #define MAX_TRIES 3 | |
9544 | ||
74531fed PA |
9545 | /* Process any number of notifications, and then return when |
9546 | we get a packet. */ | |
9547 | for (;;) | |
c906108c | 9548 | { |
d9c43928 | 9549 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9550 | times. */ |
9551 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9552 | { |
74531fed PA |
9553 | /* This can loop forever if the remote side sends us |
9554 | characters continuously, but if it pauses, we'll get | |
9555 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9556 | we'll count that as a retry. | |
9557 | ||
9558 | Note that even when forever is set, we will only wait | |
9559 | forever prior to the start of a packet. After that, we | |
9560 | expect characters to arrive at a brisk pace. They should | |
9561 | show up within remote_timeout intervals. */ | |
9562 | do | |
9563 | c = readchar (timeout); | |
9564 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9565 | |
9566 | if (c == SERIAL_TIMEOUT) | |
9567 | { | |
74531fed PA |
9568 | if (expecting_notif) |
9569 | return -1; /* Don't complain, it's normal to not get | |
9570 | anything in this case. */ | |
9571 | ||
23860348 | 9572 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9573 | { |
78a095c3 | 9574 | remote_unpush_target (); |
598d3636 JK |
9575 | throw_error (TARGET_CLOSE_ERROR, |
9576 | _("Watchdog timeout has expired. " | |
9577 | "Target detached.")); | |
c906108c | 9578 | } |
c906108c | 9579 | if (remote_debug) |
0f71a2f6 | 9580 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9581 | } |
74531fed PA |
9582 | else |
9583 | { | |
9584 | /* We've found the start of a packet or notification. | |
9585 | Now collect the data. */ | |
9586 | val = read_frame (buf, sizeof_buf); | |
9587 | if (val >= 0) | |
9588 | break; | |
9589 | } | |
9590 | ||
c33e31fd | 9591 | remote_serial_write ("-", 1); |
c906108c | 9592 | } |
c906108c | 9593 | |
74531fed PA |
9594 | if (tries > MAX_TRIES) |
9595 | { | |
9596 | /* We have tried hard enough, and just can't receive the | |
9597 | packet/notification. Give up. */ | |
9598 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9599 | |
74531fed PA |
9600 | /* Skip the ack char if we're in no-ack mode. */ |
9601 | if (!rs->noack_mode) | |
c33e31fd | 9602 | remote_serial_write ("+", 1); |
74531fed PA |
9603 | return -1; |
9604 | } | |
c906108c | 9605 | |
74531fed PA |
9606 | /* If we got an ordinary packet, return that to our caller. */ |
9607 | if (c == '$') | |
c906108c SS |
9608 | { |
9609 | if (remote_debug) | |
43e526b9 | 9610 | { |
6f8976bf YQ |
9611 | std::string str |
9612 | = escape_buffer (*buf, | |
9613 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9614 | ||
9615 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9616 | str.c_str ()); | |
9617 | ||
567a3e54 SM |
9618 | if (val > REMOTE_DEBUG_MAX_CHAR) |
9619 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9620 | val - REMOTE_DEBUG_MAX_CHAR); | |
6e5abd65 | 9621 | |
6f8976bf | 9622 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9623 | } |
a6f3e723 SL |
9624 | |
9625 | /* Skip the ack char if we're in no-ack mode. */ | |
9626 | if (!rs->noack_mode) | |
c33e31fd | 9627 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9628 | if (is_notif != NULL) |
9629 | *is_notif = 0; | |
0876f84a | 9630 | return val; |
c906108c SS |
9631 | } |
9632 | ||
74531fed PA |
9633 | /* If we got a notification, handle it, and go back to looking |
9634 | for a packet. */ | |
9635 | else | |
9636 | { | |
9637 | gdb_assert (c == '%'); | |
9638 | ||
9639 | if (remote_debug) | |
9640 | { | |
b3ced9ba | 9641 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9642 | |
6e5abd65 PA |
9643 | fprintf_unfiltered (gdb_stdlog, |
9644 | " Notification received: %s\n", | |
b3ced9ba | 9645 | str.c_str ()); |
74531fed | 9646 | } |
fee9eda9 YQ |
9647 | if (is_notif != NULL) |
9648 | *is_notif = 1; | |
c906108c | 9649 | |
5965e028 | 9650 | handle_notification (rs->notif_state, *buf); |
c906108c | 9651 | |
74531fed | 9652 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9653 | |
74531fed | 9654 | if (expecting_notif) |
fee9eda9 | 9655 | return val; |
74531fed PA |
9656 | } |
9657 | } | |
9658 | } | |
9659 | ||
6b8edb51 PA |
9660 | int |
9661 | remote_target::getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
74531fed | 9662 | { |
fee9eda9 | 9663 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9664 | } |
9665 | ||
6b8edb51 PA |
9666 | int |
9667 | remote_target::getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, | |
9668 | int *is_notif) | |
74531fed | 9669 | { |
fee9eda9 YQ |
9670 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9671 | is_notif); | |
c906108c | 9672 | } |
74531fed | 9673 | |
cbb8991c DB |
9674 | /* Kill any new fork children of process PID that haven't been |
9675 | processed by follow_fork. */ | |
9676 | ||
6b8edb51 PA |
9677 | void |
9678 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 9679 | { |
6b8edb51 | 9680 | remote_state *rs = get_remote_state (); |
cbb8991c DB |
9681 | struct thread_info *thread; |
9682 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
9683 | |
9684 | /* Kill the fork child threads of any threads in process PID | |
9685 | that are stopped at a fork event. */ | |
9686 | ALL_NON_EXITED_THREADS (thread) | |
9687 | { | |
9688 | struct target_waitstatus *ws = &thread->pending_follow; | |
9689 | ||
9690 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9691 | { | |
953edf2b | 9692 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
9693 | int res; |
9694 | ||
6b8edb51 | 9695 | res = remote_vkill (child_pid); |
cbb8991c DB |
9696 | if (res != 0) |
9697 | error (_("Can't kill fork child process %d"), child_pid); | |
9698 | } | |
9699 | } | |
9700 | ||
9701 | /* Check for any pending fork events (not reported or processed yet) | |
9702 | in process PID and kill those fork child threads as well. */ | |
9703 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
9704 | for (auto &event : rs->stop_reply_queue) |
9705 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
9706 | { | |
9707 | int child_pid = event->ws.value.related_pid.pid (); | |
9708 | int res; | |
9709 | ||
9710 | res = remote_vkill (child_pid); | |
9711 | if (res != 0) | |
9712 | error (_("Can't kill fork child process %d"), child_pid); | |
9713 | } | |
cbb8991c DB |
9714 | } |
9715 | ||
c906108c | 9716 | \f |
8020350c DB |
9717 | /* Target hook to kill the current inferior. */ |
9718 | ||
f6ac5f3d PA |
9719 | void |
9720 | remote_target::kill () | |
43ff13b4 | 9721 | { |
8020350c DB |
9722 | int res = -1; |
9723 | int pid = ptid_get_pid (inferior_ptid); | |
9724 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9725 | |
8020350c | 9726 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9727 | { |
8020350c DB |
9728 | /* If we're stopped while forking and we haven't followed yet, |
9729 | kill the child task. We need to do this before killing the | |
9730 | parent task because if this is a vfork then the parent will | |
9731 | be sleeping. */ | |
6b8edb51 | 9732 | kill_new_fork_children (pid); |
8020350c | 9733 | |
6b8edb51 | 9734 | res = remote_vkill (pid); |
8020350c | 9735 | if (res == 0) |
0fdf84ca | 9736 | { |
bc1e6c81 | 9737 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9738 | return; |
9739 | } | |
8020350c | 9740 | } |
0fdf84ca | 9741 | |
8020350c DB |
9742 | /* If we are in 'target remote' mode and we are killing the only |
9743 | inferior, then we will tell gdbserver to exit and unpush the | |
9744 | target. */ | |
9745 | if (res == -1 && !remote_multi_process_p (rs) | |
9746 | && number_of_live_inferiors () == 1) | |
9747 | { | |
9748 | remote_kill_k (); | |
9749 | ||
9750 | /* We've killed the remote end, we get to mourn it. If we are | |
9751 | not in extended mode, mourning the inferior also unpushes | |
9752 | remote_ops from the target stack, which closes the remote | |
9753 | connection. */ | |
bc1e6c81 | 9754 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9755 | |
9756 | return; | |
0fdf84ca | 9757 | } |
43ff13b4 | 9758 | |
8020350c | 9759 | error (_("Can't kill process")); |
43ff13b4 JM |
9760 | } |
9761 | ||
8020350c DB |
9762 | /* Send a kill request to the target using the 'vKill' packet. */ |
9763 | ||
6b8edb51 PA |
9764 | int |
9765 | remote_target::remote_vkill (int pid) | |
82f73884 | 9766 | { |
4082afcc | 9767 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9768 | return -1; |
9769 | ||
6b8edb51 PA |
9770 | remote_state *rs = get_remote_state (); |
9771 | ||
82f73884 | 9772 | /* Tell the remote target to detach. */ |
bba74b36 | 9773 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9774 | putpkt (rs->buf); |
9775 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9776 | ||
4082afcc PA |
9777 | switch (packet_ok (rs->buf, |
9778 | &remote_protocol_packets[PACKET_vKill])) | |
9779 | { | |
9780 | case PACKET_OK: | |
9781 | return 0; | |
9782 | case PACKET_ERROR: | |
9783 | return 1; | |
9784 | case PACKET_UNKNOWN: | |
9785 | return -1; | |
9786 | default: | |
9787 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9788 | } | |
82f73884 PA |
9789 | } |
9790 | ||
8020350c DB |
9791 | /* Send a kill request to the target using the 'k' packet. */ |
9792 | ||
6b8edb51 PA |
9793 | void |
9794 | remote_target::remote_kill_k () | |
82f73884 | 9795 | { |
8020350c DB |
9796 | /* Catch errors so the user can quit from gdb even when we |
9797 | aren't on speaking terms with the remote system. */ | |
9798 | TRY | |
82f73884 | 9799 | { |
82f73884 | 9800 | putpkt ("k"); |
82f73884 | 9801 | } |
8020350c DB |
9802 | CATCH (ex, RETURN_MASK_ERROR) |
9803 | { | |
9804 | if (ex.error == TARGET_CLOSE_ERROR) | |
9805 | { | |
9806 | /* If we got an (EOF) error that caused the target | |
9807 | to go away, then we're done, that's what we wanted. | |
9808 | "k" is susceptible to cause a premature EOF, given | |
9809 | that the remote server isn't actually required to | |
9810 | reply to "k", and it can happen that it doesn't | |
9811 | even get to reply ACK to the "k". */ | |
9812 | return; | |
9813 | } | |
82f73884 | 9814 | |
8020350c DB |
9815 | /* Otherwise, something went wrong. We didn't actually kill |
9816 | the target. Just propagate the exception, and let the | |
9817 | user or higher layers decide what to do. */ | |
9818 | throw_exception (ex); | |
9819 | } | |
9820 | END_CATCH | |
82f73884 PA |
9821 | } |
9822 | ||
f6ac5f3d PA |
9823 | void |
9824 | remote_target::mourn_inferior () | |
c906108c | 9825 | { |
8020350c | 9826 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9827 | |
9607784a PA |
9828 | /* We're no longer interested in notification events of an inferior |
9829 | that exited or was killed/detached. */ | |
9830 | discard_pending_stop_replies (current_inferior ()); | |
9831 | ||
8020350c DB |
9832 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9833 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9834 | { | |
f6ac5f3d | 9835 | unpush_target (this); |
c906108c | 9836 | |
8020350c DB |
9837 | /* remote_close takes care of doing most of the clean up. */ |
9838 | generic_mourn_inferior (); | |
9839 | return; | |
9840 | } | |
c906108c | 9841 | |
e24a49d8 PA |
9842 | /* In case we got here due to an error, but we're going to stay |
9843 | connected. */ | |
9844 | rs->waiting_for_stop_reply = 0; | |
9845 | ||
dc1981d7 PA |
9846 | /* If the current general thread belonged to the process we just |
9847 | detached from or has exited, the remote side current general | |
9848 | thread becomes undefined. Considering a case like this: | |
9849 | ||
9850 | - We just got here due to a detach. | |
9851 | - The process that we're detaching from happens to immediately | |
9852 | report a global breakpoint being hit in non-stop mode, in the | |
9853 | same thread we had selected before. | |
9854 | - GDB attaches to this process again. | |
9855 | - This event happens to be the next event we handle. | |
9856 | ||
9857 | GDB would consider that the current general thread didn't need to | |
9858 | be set on the stub side (with Hg), since for all it knew, | |
9859 | GENERAL_THREAD hadn't changed. | |
9860 | ||
9861 | Notice that although in all-stop mode, the remote server always | |
9862 | sets the current thread to the thread reporting the stop event, | |
9863 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9864 | not* change the current thread when reporting a breakpoint hit, | |
9865 | due to the decoupling of event reporting and event handling. | |
9866 | ||
9867 | To keep things simple, we always invalidate our notion of the | |
9868 | current thread. */ | |
47f8a51d | 9869 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9870 | |
8020350c | 9871 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9872 | generic_mourn_inferior (); |
9873 | ||
d729566a | 9874 | if (!have_inferiors ()) |
2d717e4f | 9875 | { |
82f73884 PA |
9876 | if (!remote_multi_process_p (rs)) |
9877 | { | |
9878 | /* Check whether the target is running now - some remote stubs | |
9879 | automatically restart after kill. */ | |
9880 | putpkt ("?"); | |
9881 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9882 | ||
9883 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9884 | { | |
3e43a32a MS |
9885 | /* Assume that the target has been restarted. Set |
9886 | inferior_ptid so that bits of core GDB realizes | |
9887 | there's something here, e.g., so that the user can | |
9888 | say "kill" again. */ | |
82f73884 PA |
9889 | inferior_ptid = magic_null_ptid; |
9890 | } | |
82f73884 | 9891 | } |
2d717e4f DJ |
9892 | } |
9893 | } | |
c906108c | 9894 | |
57810aa7 | 9895 | bool |
f6ac5f3d | 9896 | extended_remote_target::supports_disable_randomization () |
03583c20 | 9897 | { |
4082afcc | 9898 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9899 | } |
9900 | ||
6b8edb51 PA |
9901 | void |
9902 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
9903 | { |
9904 | struct remote_state *rs = get_remote_state (); | |
9905 | char *reply; | |
9906 | ||
bba74b36 YQ |
9907 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9908 | val); | |
03583c20 | 9909 | putpkt (rs->buf); |
b6bb3468 | 9910 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9911 | if (*reply == '\0') |
9912 | error (_("Target does not support QDisableRandomization.")); | |
9913 | if (strcmp (reply, "OK") != 0) | |
9914 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9915 | } | |
9916 | ||
6b8edb51 PA |
9917 | int |
9918 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
9919 | { |
9920 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9921 | int len; |
94585166 | 9922 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9923 | |
2d717e4f DJ |
9924 | /* If the user has disabled vRun support, or we have detected that |
9925 | support is not available, do not try it. */ | |
4082afcc | 9926 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9927 | return -1; |
424163ea | 9928 | |
2d717e4f DJ |
9929 | strcpy (rs->buf, "vRun;"); |
9930 | len = strlen (rs->buf); | |
c906108c | 9931 | |
2d717e4f DJ |
9932 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9933 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9934 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9935 | strlen (remote_exec_file)); | |
2d717e4f | 9936 | |
7c5ded6a | 9937 | if (!args.empty ()) |
2d717e4f | 9938 | { |
2d717e4f | 9939 | int i; |
2d717e4f | 9940 | |
773a1edc | 9941 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9942 | for (i = 0; argv[i] != NULL; i++) |
9943 | { | |
9944 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9945 | error (_("Argument list too long for run packet")); | |
9946 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9947 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9948 | strlen (argv[i])); | |
2d717e4f | 9949 | } |
2d717e4f DJ |
9950 | } |
9951 | ||
9952 | rs->buf[len++] = '\0'; | |
9953 | ||
9954 | putpkt (rs->buf); | |
9955 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9956 | ||
4082afcc | 9957 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9958 | { |
4082afcc | 9959 | case PACKET_OK: |
3405876a | 9960 | /* We have a wait response. All is well. */ |
2d717e4f | 9961 | return 0; |
4082afcc PA |
9962 | case PACKET_UNKNOWN: |
9963 | return -1; | |
9964 | case PACKET_ERROR: | |
2d717e4f DJ |
9965 | if (remote_exec_file[0] == '\0') |
9966 | error (_("Running the default executable on the remote target failed; " | |
9967 | "try \"set remote exec-file\"?")); | |
9968 | else | |
9969 | error (_("Running \"%s\" on the remote target failed"), | |
9970 | remote_exec_file); | |
4082afcc PA |
9971 | default: |
9972 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9973 | } |
c906108c SS |
9974 | } |
9975 | ||
0a2dde4a SDJ |
9976 | /* Helper function to send set/unset environment packets. ACTION is |
9977 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9978 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9979 | sent. */ | |
9980 | ||
6b8edb51 PA |
9981 | void |
9982 | remote_target::send_environment_packet (const char *action, | |
9983 | const char *packet, | |
9984 | const char *value) | |
0a2dde4a | 9985 | { |
6b8edb51 PA |
9986 | remote_state *rs = get_remote_state (); |
9987 | ||
0a2dde4a SDJ |
9988 | /* Convert the environment variable to an hex string, which |
9989 | is the best format to be transmitted over the wire. */ | |
9990 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9991 | strlen (value)); | |
9992 | ||
9993 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9994 | "%s:%s", packet, encoded_value.c_str ()); | |
9995 | ||
9996 | putpkt (rs->buf); | |
9997 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9998 | if (strcmp (rs->buf, "OK") != 0) | |
9999 | warning (_("Unable to %s environment variable '%s' on remote."), | |
10000 | action, value); | |
10001 | } | |
10002 | ||
10003 | /* Helper function to handle the QEnvironment* packets. */ | |
10004 | ||
6b8edb51 PA |
10005 | void |
10006 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10007 | { |
6b8edb51 PA |
10008 | remote_state *rs = get_remote_state (); |
10009 | ||
0a2dde4a SDJ |
10010 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10011 | { | |
10012 | putpkt ("QEnvironmentReset"); | |
10013 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10014 | if (strcmp (rs->buf, "OK") != 0) | |
10015 | warning (_("Unable to reset environment on remote.")); | |
10016 | } | |
10017 | ||
10018 | gdb_environ *e = ¤t_inferior ()->environment; | |
10019 | ||
10020 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10021 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10022 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10023 | el.c_str ()); |
10024 | ||
10025 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10026 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10027 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10028 | } |
10029 | ||
bc3b087d SDJ |
10030 | /* Helper function to set the current working directory for the |
10031 | inferior in the remote target. */ | |
10032 | ||
6b8edb51 PA |
10033 | void |
10034 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10035 | { |
10036 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10037 | { | |
10038 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10039 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10040 | |
10041 | if (inferior_cwd != NULL) | |
10042 | { | |
10043 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10044 | strlen (inferior_cwd)); | |
10045 | ||
10046 | xsnprintf (rs->buf, get_remote_packet_size (), | |
10047 | "QSetWorkingDir:%s", hexpath.c_str ()); | |
10048 | } | |
10049 | else | |
10050 | { | |
10051 | /* An empty inferior_cwd means that the user wants us to | |
10052 | reset the remote server's inferior's cwd. */ | |
10053 | xsnprintf (rs->buf, get_remote_packet_size (), | |
10054 | "QSetWorkingDir:"); | |
10055 | } | |
10056 | ||
10057 | putpkt (rs->buf); | |
10058 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10059 | if (packet_ok (rs->buf, | |
10060 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10061 | != PACKET_OK) | |
10062 | error (_("\ | |
10063 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10064 | directory: %s"), | |
10065 | rs->buf); | |
10066 | ||
10067 | } | |
10068 | } | |
10069 | ||
2d717e4f DJ |
10070 | /* In the extended protocol we want to be able to do things like |
10071 | "run" and have them basically work as expected. So we need | |
10072 | a special create_inferior function. We support changing the | |
10073 | executable file and the command line arguments, but not the | |
10074 | environment. */ | |
10075 | ||
f6ac5f3d PA |
10076 | void |
10077 | extended_remote_target::create_inferior (const char *exec_file, | |
10078 | const std::string &args, | |
10079 | char **env, int from_tty) | |
43ff13b4 | 10080 | { |
3405876a PA |
10081 | int run_worked; |
10082 | char *stop_reply; | |
10083 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10084 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10085 | |
43ff13b4 | 10086 | /* If running asynchronously, register the target file descriptor |
23860348 | 10087 | with the event loop. */ |
75c99385 | 10088 | if (target_can_async_p ()) |
6a3753b3 | 10089 | target_async (1); |
43ff13b4 | 10090 | |
03583c20 | 10091 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10092 | if (supports_disable_randomization ()) |
03583c20 UW |
10093 | extended_remote_disable_randomization (disable_randomization); |
10094 | ||
aefd8b33 SDJ |
10095 | /* If startup-with-shell is on, we inform gdbserver to start the |
10096 | remote inferior using a shell. */ | |
10097 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10098 | { | |
10099 | xsnprintf (rs->buf, get_remote_packet_size (), | |
10100 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
10101 | putpkt (rs->buf); | |
10102 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10103 | if (strcmp (rs->buf, "OK") != 0) | |
10104 | error (_("\ | |
10105 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
10106 | rs->buf); | |
10107 | } | |
10108 | ||
6b8edb51 | 10109 | extended_remote_environment_support (); |
0a2dde4a | 10110 | |
6b8edb51 | 10111 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10112 | |
43ff13b4 | 10113 | /* Now restart the remote server. */ |
3405876a PA |
10114 | run_worked = extended_remote_run (args) != -1; |
10115 | if (!run_worked) | |
2d717e4f DJ |
10116 | { |
10117 | /* vRun was not supported. Fail if we need it to do what the | |
10118 | user requested. */ | |
10119 | if (remote_exec_file[0]) | |
10120 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10121 | if (!args.empty ()) |
2d717e4f | 10122 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 10123 | |
2d717e4f DJ |
10124 | /* Fall back to "R". */ |
10125 | extended_remote_restart (); | |
10126 | } | |
424163ea | 10127 | |
6c95b8df PA |
10128 | if (!have_inferiors ()) |
10129 | { | |
10130 | /* Clean up from the last time we ran, before we mark the target | |
10131 | running again. This will mark breakpoints uninserted, and | |
10132 | get_offsets may insert breakpoints. */ | |
10133 | init_thread_list (); | |
10134 | init_wait_for_inferior (); | |
10135 | } | |
45280a52 | 10136 | |
3405876a PA |
10137 | /* vRun's success return is a stop reply. */ |
10138 | stop_reply = run_worked ? rs->buf : NULL; | |
10139 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 10140 | |
2d717e4f DJ |
10141 | /* Get updated offsets, if the stub uses qOffsets. */ |
10142 | get_offsets (); | |
2d717e4f | 10143 | } |
c906108c | 10144 | \f |
c5aa993b | 10145 | |
b775012e LM |
10146 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10147 | the list of conditions (in agent expression bytecode format), if any, the | |
10148 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10149 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10150 | |
10151 | static int | |
10152 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10153 | struct bp_target_info *bp_tgt, char *buf, |
10154 | char *buf_end) | |
b775012e | 10155 | { |
3cde5c42 | 10156 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10157 | return 0; |
10158 | ||
10159 | buf += strlen (buf); | |
bba74b36 | 10160 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10161 | buf++; |
10162 | ||
83621223 | 10163 | /* Send conditions to the target. */ |
d538e36d | 10164 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10165 | { |
bba74b36 | 10166 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10167 | buf += strlen (buf); |
3cde5c42 | 10168 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10169 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10170 | *buf = '\0'; | |
10171 | } | |
b775012e LM |
10172 | return 0; |
10173 | } | |
10174 | ||
d3ce09f5 SS |
10175 | static void |
10176 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10177 | struct bp_target_info *bp_tgt, char *buf) | |
10178 | { | |
3cde5c42 | 10179 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10180 | return; |
10181 | ||
10182 | buf += strlen (buf); | |
10183 | ||
10184 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10185 | buf += strlen (buf); | |
10186 | ||
10187 | /* Concatenate all the agent expressions that are commands into the | |
10188 | cmds parameter. */ | |
df97be55 | 10189 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10190 | { |
10191 | sprintf (buf, "X%x,", aexpr->len); | |
10192 | buf += strlen (buf); | |
3cde5c42 | 10193 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10194 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10195 | *buf = '\0'; | |
10196 | } | |
d3ce09f5 SS |
10197 | } |
10198 | ||
8181d85f DJ |
10199 | /* Insert a breakpoint. On targets that have software breakpoint |
10200 | support, we ask the remote target to do the work; on targets | |
10201 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10202 | |
f6ac5f3d PA |
10203 | int |
10204 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10205 | struct bp_target_info *bp_tgt) | |
c906108c | 10206 | { |
d471ea57 AC |
10207 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10208 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10209 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10210 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10211 | |
4082afcc | 10212 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10213 | { |
0d5ed153 | 10214 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10215 | struct remote_state *rs; |
bba74b36 | 10216 | char *p, *endbuf; |
4fff2411 | 10217 | |
28439a30 PA |
10218 | /* Make sure the remote is pointing at the right process, if |
10219 | necessary. */ | |
10220 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10221 | set_general_process (); | |
10222 | ||
4fff2411 JZ |
10223 | rs = get_remote_state (); |
10224 | p = rs->buf; | |
bba74b36 | 10225 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 10226 | |
96baa820 JM |
10227 | *(p++) = 'Z'; |
10228 | *(p++) = '0'; | |
10229 | *(p++) = ','; | |
7c0f6dcc | 10230 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10231 | p += hexnumstr (p, addr); |
579c6ad9 | 10232 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10233 | |
f6ac5f3d | 10234 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10235 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10236 | |
f6ac5f3d | 10237 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10238 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10239 | ||
6d820c5c DJ |
10240 | putpkt (rs->buf); |
10241 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10242 | |
6d820c5c | 10243 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10244 | { |
d471ea57 AC |
10245 | case PACKET_ERROR: |
10246 | return -1; | |
10247 | case PACKET_OK: | |
10248 | return 0; | |
10249 | case PACKET_UNKNOWN: | |
10250 | break; | |
96baa820 JM |
10251 | } |
10252 | } | |
c906108c | 10253 | |
0000e5cc PA |
10254 | /* If this breakpoint has target-side commands but this stub doesn't |
10255 | support Z0 packets, throw error. */ | |
3cde5c42 | 10256 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10257 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10258 | Target doesn't support breakpoints that have target side commands.")); | |
10259 | ||
f6ac5f3d | 10260 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10261 | } |
10262 | ||
f6ac5f3d PA |
10263 | int |
10264 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10265 | struct bp_target_info *bp_tgt, | |
10266 | enum remove_bp_reason reason) | |
c906108c | 10267 | { |
8181d85f | 10268 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10269 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10270 | |
4082afcc | 10271 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10272 | { |
6d820c5c | 10273 | char *p = rs->buf; |
bba74b36 | 10274 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 10275 | |
28439a30 PA |
10276 | /* Make sure the remote is pointing at the right process, if |
10277 | necessary. */ | |
10278 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10279 | set_general_process (); | |
10280 | ||
96baa820 JM |
10281 | *(p++) = 'z'; |
10282 | *(p++) = '0'; | |
10283 | *(p++) = ','; | |
10284 | ||
8181d85f DJ |
10285 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10286 | p += hexnumstr (p, addr); | |
579c6ad9 | 10287 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10288 | |
6d820c5c DJ |
10289 | putpkt (rs->buf); |
10290 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10291 | |
6d820c5c | 10292 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10293 | } |
10294 | ||
f6ac5f3d | 10295 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10296 | } |
10297 | ||
f486487f | 10298 | static enum Z_packet_type |
d471ea57 AC |
10299 | watchpoint_to_Z_packet (int type) |
10300 | { | |
10301 | switch (type) | |
10302 | { | |
10303 | case hw_write: | |
bb858e6a | 10304 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10305 | break; |
10306 | case hw_read: | |
bb858e6a | 10307 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10308 | break; |
10309 | case hw_access: | |
bb858e6a | 10310 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10311 | break; |
10312 | default: | |
8e65ff28 | 10313 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10314 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10315 | } |
10316 | } | |
10317 | ||
f6ac5f3d PA |
10318 | int |
10319 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10320 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10321 | { |
d01949b6 | 10322 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10323 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10324 | char *p; |
d471ea57 | 10325 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10326 | |
4082afcc | 10327 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10328 | return 1; |
802188a7 | 10329 | |
28439a30 PA |
10330 | /* Make sure the remote is pointing at the right process, if |
10331 | necessary. */ | |
10332 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10333 | set_general_process (); | |
10334 | ||
bba74b36 | 10335 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 10336 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10337 | addr = remote_address_masked (addr); |
10338 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10339 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10340 | |
6d820c5c DJ |
10341 | putpkt (rs->buf); |
10342 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10343 | |
6d820c5c | 10344 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10345 | { |
10346 | case PACKET_ERROR: | |
d471ea57 | 10347 | return -1; |
85d721b8 PA |
10348 | case PACKET_UNKNOWN: |
10349 | return 1; | |
d471ea57 AC |
10350 | case PACKET_OK: |
10351 | return 0; | |
10352 | } | |
8e65ff28 | 10353 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10354 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10355 | } |
10356 | ||
57810aa7 | 10357 | bool |
f6ac5f3d PA |
10358 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10359 | CORE_ADDR start, int length) | |
283002cf MR |
10360 | { |
10361 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10362 | ||
10363 | return diff < length; | |
10364 | } | |
10365 | ||
d471ea57 | 10366 | |
f6ac5f3d PA |
10367 | int |
10368 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10369 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10370 | { |
d01949b6 | 10371 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10372 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10373 | char *p; |
d471ea57 AC |
10374 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10375 | ||
4082afcc | 10376 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10377 | return -1; |
802188a7 | 10378 | |
28439a30 PA |
10379 | /* Make sure the remote is pointing at the right process, if |
10380 | necessary. */ | |
10381 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10382 | set_general_process (); | |
10383 | ||
bba74b36 | 10384 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 10385 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10386 | addr = remote_address_masked (addr); |
10387 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10388 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
10389 | putpkt (rs->buf); |
10390 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10391 | |
6d820c5c | 10392 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10393 | { |
10394 | case PACKET_ERROR: | |
10395 | case PACKET_UNKNOWN: | |
10396 | return -1; | |
10397 | case PACKET_OK: | |
10398 | return 0; | |
10399 | } | |
8e65ff28 | 10400 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10401 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10402 | } |
10403 | ||
3c3bea1c | 10404 | |
501eef12 | 10405 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 10406 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 10407 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 10408 | |
f6ac5f3d PA |
10409 | int |
10410 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10411 | { |
10412 | if (remote_hw_watchpoint_length_limit == 0) | |
10413 | return 0; | |
10414 | else if (remote_hw_watchpoint_length_limit < 0) | |
10415 | return 1; | |
10416 | else if (len <= remote_hw_watchpoint_length_limit) | |
10417 | return 1; | |
10418 | else | |
10419 | return 0; | |
10420 | } | |
10421 | ||
f6ac5f3d PA |
10422 | int |
10423 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10424 | { |
3c3bea1c GS |
10425 | if (type == bp_hardware_breakpoint) |
10426 | { | |
10427 | if (remote_hw_breakpoint_limit == 0) | |
10428 | return 0; | |
501eef12 AC |
10429 | else if (remote_hw_breakpoint_limit < 0) |
10430 | return 1; | |
3c3bea1c GS |
10431 | else if (cnt <= remote_hw_breakpoint_limit) |
10432 | return 1; | |
10433 | } | |
10434 | else | |
10435 | { | |
10436 | if (remote_hw_watchpoint_limit == 0) | |
10437 | return 0; | |
501eef12 AC |
10438 | else if (remote_hw_watchpoint_limit < 0) |
10439 | return 1; | |
3c3bea1c GS |
10440 | else if (ot) |
10441 | return -1; | |
10442 | else if (cnt <= remote_hw_watchpoint_limit) | |
10443 | return 1; | |
10444 | } | |
10445 | return -1; | |
10446 | } | |
10447 | ||
f7e6eed5 PA |
10448 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10449 | ||
57810aa7 | 10450 | bool |
f6ac5f3d | 10451 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10452 | { |
799a2abe | 10453 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10454 | |
799a2abe | 10455 | return (thread->priv != NULL |
7aabaf9d SM |
10456 | && (get_remote_thread_info (thread)->stop_reason |
10457 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10458 | } |
10459 | ||
10460 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10461 | remote. */ | |
10462 | ||
57810aa7 | 10463 | bool |
f6ac5f3d | 10464 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10465 | { |
f7e6eed5 PA |
10466 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10467 | } | |
10468 | ||
10469 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10470 | ||
57810aa7 | 10471 | bool |
f6ac5f3d | 10472 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10473 | { |
799a2abe | 10474 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10475 | |
799a2abe | 10476 | return (thread->priv != NULL |
7aabaf9d SM |
10477 | && (get_remote_thread_info (thread)->stop_reason |
10478 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10479 | } |
10480 | ||
10481 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10482 | remote. */ | |
10483 | ||
57810aa7 | 10484 | bool |
f6ac5f3d | 10485 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10486 | { |
f7e6eed5 PA |
10487 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10488 | } | |
10489 | ||
57810aa7 | 10490 | bool |
f6ac5f3d | 10491 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10492 | { |
799a2abe | 10493 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10494 | |
799a2abe | 10495 | return (thread->priv != NULL |
7aabaf9d SM |
10496 | && (get_remote_thread_info (thread)->stop_reason |
10497 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10498 | } |
10499 | ||
57810aa7 | 10500 | bool |
f6ac5f3d | 10501 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10502 | { |
799a2abe | 10503 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10504 | |
799a2abe | 10505 | if (thread->priv != NULL |
7aabaf9d SM |
10506 | && (get_remote_thread_info (thread)->stop_reason |
10507 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10508 | { |
7aabaf9d | 10509 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10510 | return true; |
4aa7a7f5 JJ |
10511 | } |
10512 | ||
57810aa7 | 10513 | return false; |
3c3bea1c GS |
10514 | } |
10515 | ||
10516 | ||
f6ac5f3d PA |
10517 | int |
10518 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10519 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10520 | { |
0d5ed153 | 10521 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10522 | struct remote_state *rs; |
bba74b36 | 10523 | char *p, *endbuf; |
dd61ec5c | 10524 | char *message; |
3c3bea1c | 10525 | |
4082afcc | 10526 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10527 | return -1; |
2bc416ba | 10528 | |
28439a30 PA |
10529 | /* Make sure the remote is pointing at the right process, if |
10530 | necessary. */ | |
10531 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10532 | set_general_process (); | |
10533 | ||
4fff2411 JZ |
10534 | rs = get_remote_state (); |
10535 | p = rs->buf; | |
bba74b36 | 10536 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10537 | |
96baa820 JM |
10538 | *(p++) = 'Z'; |
10539 | *(p++) = '1'; | |
10540 | *(p++) = ','; | |
802188a7 | 10541 | |
0d5ed153 | 10542 | addr = remote_address_masked (addr); |
96baa820 | 10543 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10544 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10545 | |
f6ac5f3d | 10546 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10547 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10548 | |
f6ac5f3d | 10549 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10550 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10551 | ||
6d820c5c DJ |
10552 | putpkt (rs->buf); |
10553 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10554 | |
6d820c5c | 10555 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10556 | { |
10557 | case PACKET_ERROR: | |
dd61ec5c MW |
10558 | if (rs->buf[1] == '.') |
10559 | { | |
10560 | message = strchr (rs->buf + 2, '.'); | |
10561 | if (message) | |
0316657e | 10562 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10563 | } |
10564 | return -1; | |
d471ea57 AC |
10565 | case PACKET_UNKNOWN: |
10566 | return -1; | |
10567 | case PACKET_OK: | |
10568 | return 0; | |
10569 | } | |
8e65ff28 | 10570 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10571 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10572 | } |
10573 | ||
d471ea57 | 10574 | |
f6ac5f3d PA |
10575 | int |
10576 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10577 | struct bp_target_info *bp_tgt) | |
96baa820 | 10578 | { |
8181d85f | 10579 | CORE_ADDR addr; |
d01949b6 | 10580 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10581 | char *p = rs->buf; |
bba74b36 | 10582 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10583 | |
4082afcc | 10584 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10585 | return -1; |
802188a7 | 10586 | |
28439a30 PA |
10587 | /* Make sure the remote is pointing at the right process, if |
10588 | necessary. */ | |
10589 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10590 | set_general_process (); | |
10591 | ||
96baa820 JM |
10592 | *(p++) = 'z'; |
10593 | *(p++) = '1'; | |
10594 | *(p++) = ','; | |
802188a7 | 10595 | |
8181d85f | 10596 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10597 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10598 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10599 | |
6d820c5c DJ |
10600 | putpkt (rs->buf); |
10601 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10602 | |
6d820c5c | 10603 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10604 | { |
10605 | case PACKET_ERROR: | |
10606 | case PACKET_UNKNOWN: | |
10607 | return -1; | |
10608 | case PACKET_OK: | |
10609 | return 0; | |
10610 | } | |
8e65ff28 | 10611 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10612 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10613 | } |
96baa820 | 10614 | |
4a5e7a5b PA |
10615 | /* Verify memory using the "qCRC:" request. */ |
10616 | ||
f6ac5f3d PA |
10617 | int |
10618 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10619 | { |
10620 | struct remote_state *rs = get_remote_state (); | |
10621 | unsigned long host_crc, target_crc; | |
10622 | char *tmp; | |
10623 | ||
936d2992 PA |
10624 | /* It doesn't make sense to use qCRC if the remote target is |
10625 | connected but not running. */ | |
10626 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10627 | { | |
10628 | enum packet_result result; | |
28439a30 | 10629 | |
936d2992 PA |
10630 | /* Make sure the remote is pointing at the right process. */ |
10631 | set_general_process (); | |
4a5e7a5b | 10632 | |
936d2992 PA |
10633 | /* FIXME: assumes lma can fit into long. */ |
10634 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10635 | (long) lma, (long) size); | |
10636 | putpkt (rs->buf); | |
4a5e7a5b | 10637 | |
936d2992 PA |
10638 | /* Be clever; compute the host_crc before waiting for target |
10639 | reply. */ | |
10640 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10641 | ||
10642 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10643 | |
936d2992 PA |
10644 | result = packet_ok (rs->buf, |
10645 | &remote_protocol_packets[PACKET_qCRC]); | |
10646 | if (result == PACKET_ERROR) | |
10647 | return -1; | |
10648 | else if (result == PACKET_OK) | |
10649 | { | |
10650 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10651 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10652 | |
936d2992 PA |
10653 | return (host_crc == target_crc); |
10654 | } | |
10655 | } | |
4a5e7a5b | 10656 | |
f6ac5f3d | 10657 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10658 | } |
10659 | ||
c906108c SS |
10660 | /* compare-sections command |
10661 | ||
10662 | With no arguments, compares each loadable section in the exec bfd | |
10663 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10664 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10665 | |
c906108c | 10666 | static void |
ac88e2de | 10667 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10668 | { |
10669 | asection *s; | |
ce359b09 | 10670 | const char *sectname; |
c906108c SS |
10671 | bfd_size_type size; |
10672 | bfd_vma lma; | |
10673 | int matched = 0; | |
10674 | int mismatched = 0; | |
4a5e7a5b | 10675 | int res; |
95cf3b38 | 10676 | int read_only = 0; |
c906108c SS |
10677 | |
10678 | if (!exec_bfd) | |
8a3fe4f8 | 10679 | error (_("command cannot be used without an exec file")); |
c906108c | 10680 | |
95cf3b38 DT |
10681 | if (args != NULL && strcmp (args, "-r") == 0) |
10682 | { | |
10683 | read_only = 1; | |
10684 | args = NULL; | |
10685 | } | |
10686 | ||
c5aa993b | 10687 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10688 | { |
10689 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10690 | continue; /* Skip non-loadable section. */ |
c906108c | 10691 | |
95cf3b38 DT |
10692 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10693 | continue; /* Skip writeable sections */ | |
10694 | ||
2c500098 | 10695 | size = bfd_get_section_size (s); |
c906108c | 10696 | if (size == 0) |
0df8b418 | 10697 | continue; /* Skip zero-length section. */ |
c906108c | 10698 | |
ce359b09 | 10699 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10700 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10701 | continue; /* Not the section selected by user. */ |
c906108c | 10702 | |
0df8b418 | 10703 | matched = 1; /* Do this section. */ |
c906108c | 10704 | lma = s->lma; |
c906108c | 10705 | |
b80406ac TT |
10706 | gdb::byte_vector sectdata (size); |
10707 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10708 | |
b80406ac | 10709 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10710 | |
10711 | if (res == -1) | |
5af949e3 | 10712 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10713 | paddress (target_gdbarch (), lma), |
10714 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10715 | |
5af949e3 | 10716 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10717 | paddress (target_gdbarch (), lma), |
10718 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10719 | if (res) |
c906108c SS |
10720 | printf_filtered ("matched.\n"); |
10721 | else | |
c5aa993b JM |
10722 | { |
10723 | printf_filtered ("MIS-MATCHED!\n"); | |
10724 | mismatched++; | |
10725 | } | |
c906108c SS |
10726 | } |
10727 | if (mismatched > 0) | |
936d2992 | 10728 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10729 | the loaded file\n")); |
c906108c | 10730 | if (args && !matched) |
a3f17187 | 10731 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10732 | } |
10733 | ||
0e7f50da UW |
10734 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10735 | into remote target. The number of bytes written to the remote | |
10736 | target is returned, or -1 for error. */ | |
10737 | ||
6b8edb51 PA |
10738 | target_xfer_status |
10739 | remote_target::remote_write_qxfer (const char *object_name, | |
10740 | const char *annex, const gdb_byte *writebuf, | |
10741 | ULONGEST offset, LONGEST len, | |
10742 | ULONGEST *xfered_len, | |
10743 | struct packet_config *packet) | |
0e7f50da UW |
10744 | { |
10745 | int i, buf_len; | |
10746 | ULONGEST n; | |
0e7f50da UW |
10747 | struct remote_state *rs = get_remote_state (); |
10748 | int max_size = get_memory_write_packet_size (); | |
10749 | ||
7cc244de | 10750 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10751 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10752 | |
10753 | /* Insert header. */ | |
10754 | i = snprintf (rs->buf, max_size, | |
10755 | "qXfer:%s:write:%s:%s:", | |
10756 | object_name, annex ? annex : "", | |
10757 | phex_nz (offset, sizeof offset)); | |
10758 | max_size -= (i + 1); | |
10759 | ||
10760 | /* Escape as much data as fits into rs->buf. */ | |
10761 | buf_len = remote_escape_output | |
124e13d9 | 10762 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10763 | |
10764 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10765 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10766 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10767 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10768 | |
10769 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10770 | |
10771 | *xfered_len = n; | |
92ffd475 | 10772 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10773 | } |
10774 | ||
0876f84a DJ |
10775 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10776 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10777 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10778 | The number of bytes read may be less than LEN without indicating an | |
10779 | EOF. PACKET is checked and updated to indicate whether the remote | |
10780 | target supports this object. */ | |
10781 | ||
6b8edb51 PA |
10782 | target_xfer_status |
10783 | remote_target::remote_read_qxfer (const char *object_name, | |
10784 | const char *annex, | |
10785 | gdb_byte *readbuf, ULONGEST offset, | |
10786 | LONGEST len, | |
10787 | ULONGEST *xfered_len, | |
10788 | struct packet_config *packet) | |
0876f84a | 10789 | { |
0876f84a | 10790 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10791 | LONGEST i, n, packet_len; |
10792 | ||
7cc244de | 10793 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10794 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10795 | |
10796 | /* Check whether we've cached an end-of-object packet that matches | |
10797 | this request. */ | |
8e88304f | 10798 | if (rs->finished_object) |
0876f84a | 10799 | { |
8e88304f TT |
10800 | if (strcmp (object_name, rs->finished_object) == 0 |
10801 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10802 | && offset == rs->finished_offset) | |
9b409511 YQ |
10803 | return TARGET_XFER_EOF; |
10804 | ||
0876f84a DJ |
10805 | |
10806 | /* Otherwise, we're now reading something different. Discard | |
10807 | the cache. */ | |
8e88304f TT |
10808 | xfree (rs->finished_object); |
10809 | xfree (rs->finished_annex); | |
10810 | rs->finished_object = NULL; | |
10811 | rs->finished_annex = NULL; | |
0876f84a DJ |
10812 | } |
10813 | ||
10814 | /* Request only enough to fit in a single packet. The actual data | |
10815 | may not, since we don't know how much of it will need to be escaped; | |
10816 | the target is free to respond with slightly less data. We subtract | |
10817 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10818 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10819 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10820 | object_name, annex ? annex : "", | |
10821 | phex_nz (offset, sizeof offset), | |
10822 | phex_nz (n, sizeof n)); | |
10823 | i = putpkt (rs->buf); | |
10824 | if (i < 0) | |
2ed4b548 | 10825 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10826 | |
10827 | rs->buf[0] = '\0'; | |
10828 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10829 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10830 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10831 | |
10832 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10833 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10834 | ||
10835 | /* 'm' means there is (or at least might be) more data after this | |
10836 | batch. That does not make sense unless there's at least one byte | |
10837 | of data in this reply. */ | |
10838 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10839 | error (_("Remote qXfer reply contained no data.")); | |
10840 | ||
10841 | /* Got some data. */ | |
bc20a4af PA |
10842 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10843 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10844 | |
10845 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10846 | or possibly empty. If we have the final block of a non-empty |
10847 | object, record this fact to bypass a subsequent partial read. */ | |
10848 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10849 | { |
8e88304f TT |
10850 | rs->finished_object = xstrdup (object_name); |
10851 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10852 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10853 | } |
10854 | ||
9b409511 YQ |
10855 | if (i == 0) |
10856 | return TARGET_XFER_EOF; | |
10857 | else | |
10858 | { | |
10859 | *xfered_len = i; | |
10860 | return TARGET_XFER_OK; | |
10861 | } | |
0876f84a DJ |
10862 | } |
10863 | ||
f6ac5f3d PA |
10864 | enum target_xfer_status |
10865 | remote_target::xfer_partial (enum target_object object, | |
10866 | const char *annex, gdb_byte *readbuf, | |
10867 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10868 | ULONGEST *xfered_len) | |
c906108c | 10869 | { |
82f73884 | 10870 | struct remote_state *rs; |
c906108c | 10871 | int i; |
6d820c5c | 10872 | char *p2; |
1e3ff5ad | 10873 | char query_type; |
124e13d9 | 10874 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10875 | |
e6e4e701 | 10876 | set_remote_traceframe (); |
82f73884 PA |
10877 | set_general_thread (inferior_ptid); |
10878 | ||
10879 | rs = get_remote_state (); | |
10880 | ||
b2182ed2 | 10881 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10882 | if (object == TARGET_OBJECT_MEMORY) |
10883 | { | |
2d717e4f DJ |
10884 | /* If the remote target is connected but not running, we should |
10885 | pass this request down to a lower stratum (e.g. the executable | |
10886 | file). */ | |
10887 | if (!target_has_execution) | |
9b409511 | 10888 | return TARGET_XFER_EOF; |
2d717e4f | 10889 | |
21e3b9b9 | 10890 | if (writebuf != NULL) |
124e13d9 SM |
10891 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10892 | xfered_len); | |
21e3b9b9 | 10893 | else |
6b8edb51 | 10894 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 10895 | xfered_len); |
21e3b9b9 DJ |
10896 | } |
10897 | ||
0df8b418 | 10898 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10899 | if (object == TARGET_OBJECT_SPU) |
10900 | { | |
10901 | if (readbuf) | |
f6ac5f3d | 10902 | return remote_read_qxfer ("spu", annex, readbuf, offset, len, |
9b409511 YQ |
10903 | xfered_len, &remote_protocol_packets |
10904 | [PACKET_qXfer_spu_read]); | |
0e7f50da | 10905 | else |
f6ac5f3d | 10906 | return remote_write_qxfer ("spu", annex, writebuf, offset, len, |
9b409511 YQ |
10907 | xfered_len, &remote_protocol_packets |
10908 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10909 | } |
10910 | ||
4aa995e1 PA |
10911 | /* Handle extra signal info using qxfer packets. */ |
10912 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10913 | { | |
10914 | if (readbuf) | |
f6ac5f3d | 10915 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 10916 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10917 | [PACKET_qXfer_siginfo_read]); |
10918 | else | |
f6ac5f3d | 10919 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 10920 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10921 | &remote_protocol_packets |
10922 | [PACKET_qXfer_siginfo_write]); | |
10923 | } | |
10924 | ||
0fb4aa4b PA |
10925 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10926 | { | |
10927 | if (readbuf) | |
f6ac5f3d | 10928 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 10929 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10930 | &remote_protocol_packets |
10931 | [PACKET_qXfer_statictrace_read]); | |
10932 | else | |
2ed4b548 | 10933 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10934 | } |
10935 | ||
a76d924d DJ |
10936 | /* Only handle flash writes. */ |
10937 | if (writebuf != NULL) | |
10938 | { | |
a76d924d DJ |
10939 | switch (object) |
10940 | { | |
10941 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 10942 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 10943 | writebuf); |
a76d924d DJ |
10944 | |
10945 | default: | |
2ed4b548 | 10946 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10947 | } |
10948 | } | |
4b8a223f | 10949 | |
1e3ff5ad AC |
10950 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10951 | objects!!! Instead specify new query packets. */ | |
10952 | switch (object) | |
c906108c | 10953 | { |
1e3ff5ad AC |
10954 | case TARGET_OBJECT_AVR: |
10955 | query_type = 'R'; | |
10956 | break; | |
802188a7 RM |
10957 | |
10958 | case TARGET_OBJECT_AUXV: | |
0876f84a | 10959 | gdb_assert (annex == NULL); |
f6ac5f3d | 10960 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 10961 | xfered_len, |
0876f84a | 10962 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10963 | |
23181151 DJ |
10964 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10965 | return remote_read_qxfer | |
f6ac5f3d | 10966 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10967 | &remote_protocol_packets[PACKET_qXfer_features]); |
10968 | ||
cfa9d6d9 DJ |
10969 | case TARGET_OBJECT_LIBRARIES: |
10970 | return remote_read_qxfer | |
f6ac5f3d | 10971 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10972 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10973 | ||
2268b414 JK |
10974 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10975 | return remote_read_qxfer | |
f6ac5f3d | 10976 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10977 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10978 | ||
fd79ecee DJ |
10979 | case TARGET_OBJECT_MEMORY_MAP: |
10980 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10981 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 10982 | xfered_len, |
fd79ecee DJ |
10983 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10984 | ||
07e059b5 VP |
10985 | case TARGET_OBJECT_OSDATA: |
10986 | /* Should only get here if we're connected. */ | |
5d93a237 | 10987 | gdb_assert (rs->remote_desc); |
07e059b5 | 10988 | return remote_read_qxfer |
f6ac5f3d | 10989 | ("osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10990 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10991 | ||
dc146f7c VP |
10992 | case TARGET_OBJECT_THREADS: |
10993 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10994 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 10995 | xfered_len, |
dc146f7c VP |
10996 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10997 | ||
b3b9301e PA |
10998 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10999 | gdb_assert (annex == NULL); | |
11000 | return remote_read_qxfer | |
f6ac5f3d | 11001 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11002 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11003 | |
11004 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11005 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11006 | xfered_len, |
78d85199 | 11007 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11008 | |
11009 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11010 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11011 | xfered_len, |
169081d0 TG |
11012 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11013 | ||
9accd112 | 11014 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11015 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11016 | xfered_len, |
9accd112 MM |
11017 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
11018 | ||
f4abbc16 | 11019 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11020 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11021 | len, xfered_len, |
11022 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11023 | ||
c78fa86a | 11024 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11025 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11026 | len, xfered_len, |
11027 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11028 | ||
1e3ff5ad | 11029 | default: |
2ed4b548 | 11030 | return TARGET_XFER_E_IO; |
c906108c SS |
11031 | } |
11032 | ||
0df8b418 | 11033 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11034 | large enough let the caller deal with it. */ |
ea9c271d | 11035 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11036 | return TARGET_XFER_E_IO; |
ea9c271d | 11037 | len = get_remote_packet_size (); |
1e3ff5ad | 11038 | |
23860348 | 11039 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11040 | if (!rs->remote_desc) |
8a3fe4f8 | 11041 | error (_("remote query is only available after target open")); |
c906108c | 11042 | |
1e3ff5ad | 11043 | gdb_assert (annex != NULL); |
4b8a223f | 11044 | gdb_assert (readbuf != NULL); |
c906108c | 11045 | |
6d820c5c | 11046 | p2 = rs->buf; |
c906108c SS |
11047 | *p2++ = 'q'; |
11048 | *p2++ = query_type; | |
11049 | ||
23860348 MS |
11050 | /* We used one buffer char for the remote protocol q command and |
11051 | another for the query type. As the remote protocol encapsulation | |
11052 | uses 4 chars plus one extra in case we are debugging | |
11053 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11054 | string. */ | |
c906108c | 11055 | i = 0; |
ea9c271d | 11056 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11057 | { |
1e3ff5ad AC |
11058 | /* Bad caller may have sent forbidden characters. */ |
11059 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11060 | *p2++ = annex[i]; | |
c906108c SS |
11061 | i++; |
11062 | } | |
1e3ff5ad AC |
11063 | *p2 = '\0'; |
11064 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11065 | |
6d820c5c | 11066 | i = putpkt (rs->buf); |
c5aa993b | 11067 | if (i < 0) |
2ed4b548 | 11068 | return TARGET_XFER_E_IO; |
c906108c | 11069 | |
6d820c5c DJ |
11070 | getpkt (&rs->buf, &rs->buf_size, 0); |
11071 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 11072 | |
9b409511 | 11073 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11074 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11075 | } |
11076 | ||
09c98b44 DB |
11077 | /* Implementation of to_get_memory_xfer_limit. */ |
11078 | ||
f6ac5f3d PA |
11079 | ULONGEST |
11080 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11081 | { |
11082 | return get_memory_write_packet_size (); | |
11083 | } | |
11084 | ||
f6ac5f3d PA |
11085 | int |
11086 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11087 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11088 | CORE_ADDR *found_addrp) | |
08388c79 | 11089 | { |
f5656ead | 11090 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11091 | struct remote_state *rs = get_remote_state (); |
11092 | int max_size = get_memory_write_packet_size (); | |
11093 | struct packet_config *packet = | |
11094 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11095 | /* Number of packet bytes used to encode the pattern; |
11096 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11097 | int escaped_pattern_len; |
0df8b418 | 11098 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11099 | int used_pattern_len; |
11100 | int i; | |
11101 | int found; | |
11102 | ULONGEST found_addr; | |
11103 | ||
7cc244de PA |
11104 | /* Don't go to the target if we don't have to. This is done before |
11105 | checking packet_config_support to avoid the possibility that a | |
11106 | success for this edge case means the facility works in | |
11107 | general. */ | |
08388c79 DE |
11108 | if (pattern_len > search_space_len) |
11109 | return 0; | |
11110 | if (pattern_len == 0) | |
11111 | { | |
11112 | *found_addrp = start_addr; | |
11113 | return 1; | |
11114 | } | |
11115 | ||
11116 | /* If we already know the packet isn't supported, fall back to the simple | |
11117 | way of searching memory. */ | |
11118 | ||
4082afcc | 11119 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11120 | { |
11121 | /* Target doesn't provided special support, fall back and use the | |
11122 | standard support (copy memory and do the search here). */ | |
f6ac5f3d | 11123 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11124 | pattern, pattern_len, found_addrp); |
11125 | } | |
11126 | ||
28439a30 PA |
11127 | /* Make sure the remote is pointing at the right process. */ |
11128 | set_general_process (); | |
11129 | ||
08388c79 DE |
11130 | /* Insert header. */ |
11131 | i = snprintf (rs->buf, max_size, | |
11132 | "qSearch:memory:%s;%s;", | |
5af949e3 | 11133 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11134 | phex_nz (search_space_len, sizeof (search_space_len))); |
11135 | max_size -= (i + 1); | |
11136 | ||
11137 | /* Escape as much data as fits into rs->buf. */ | |
11138 | escaped_pattern_len = | |
124e13d9 | 11139 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
11140 | &used_pattern_len, max_size); |
11141 | ||
11142 | /* Bail if the pattern is too large. */ | |
11143 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11144 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
11145 | |
11146 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
11147 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
11148 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
11149 | { | |
11150 | /* The request may not have worked because the command is not | |
11151 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11152 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11153 | { |
f6ac5f3d | 11154 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11155 | pattern, pattern_len, found_addrp); |
11156 | } | |
11157 | return -1; | |
11158 | } | |
11159 | ||
11160 | if (rs->buf[0] == '0') | |
11161 | found = 0; | |
11162 | else if (rs->buf[0] == '1') | |
11163 | { | |
11164 | found = 1; | |
11165 | if (rs->buf[1] != ',') | |
10e0fa18 | 11166 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
11167 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
11168 | *found_addrp = found_addr; | |
11169 | } | |
11170 | else | |
10e0fa18 | 11171 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
11172 | |
11173 | return found; | |
11174 | } | |
11175 | ||
f6ac5f3d PA |
11176 | void |
11177 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11178 | { |
d01949b6 | 11179 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 11180 | char *p = rs->buf; |
96baa820 | 11181 | |
5d93a237 | 11182 | if (!rs->remote_desc) |
8a3fe4f8 | 11183 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11184 | |
23860348 | 11185 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11186 | if (command == NULL) |
11187 | command = ""; | |
11188 | ||
23860348 | 11189 | /* The query prefix. */ |
2e9f7625 DJ |
11190 | strcpy (rs->buf, "qRcmd,"); |
11191 | p = strchr (rs->buf, '\0'); | |
96baa820 | 11192 | |
3e43a32a MS |
11193 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
11194 | > get_remote_packet_size ()) | |
8a3fe4f8 | 11195 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11196 | |
23860348 | 11197 | /* Encode the actual command. */ |
a30bf1f1 | 11198 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11199 | |
6d820c5c | 11200 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11201 | error (_("Communication problem with target.")); |
96baa820 JM |
11202 | |
11203 | /* get/display the response */ | |
11204 | while (1) | |
11205 | { | |
2e9f7625 DJ |
11206 | char *buf; |
11207 | ||
00bf0b85 | 11208 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11209 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11210 | rs->buf[0] = '\0'; |
5b37825d PW |
11211 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
11212 | { | |
11213 | /* Timeout. Continue to (try to) read responses. | |
11214 | This is better than stopping with an error, assuming the stub | |
11215 | is still executing the (long) monitor command. | |
11216 | If needed, the user can interrupt gdb using C-c, obtaining | |
11217 | an effect similar to stop on timeout. */ | |
11218 | continue; | |
11219 | } | |
2e9f7625 | 11220 | buf = rs->buf; |
96baa820 | 11221 | if (buf[0] == '\0') |
8a3fe4f8 | 11222 | error (_("Target does not support this command.")); |
96baa820 JM |
11223 | if (buf[0] == 'O' && buf[1] != 'K') |
11224 | { | |
23860348 | 11225 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11226 | continue; |
11227 | } | |
11228 | if (strcmp (buf, "OK") == 0) | |
11229 | break; | |
7be570e7 JM |
11230 | if (strlen (buf) == 3 && buf[0] == 'E' |
11231 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11232 | { | |
8a3fe4f8 | 11233 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11234 | } |
96baa820 JM |
11235 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11236 | { | |
11237 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11238 | |
96baa820 JM |
11239 | fputc_unfiltered (c, outbuf); |
11240 | } | |
11241 | break; | |
11242 | } | |
11243 | } | |
11244 | ||
f6ac5f3d PA |
11245 | std::vector<mem_region> |
11246 | remote_target::memory_map () | |
fd79ecee | 11247 | { |
a664f67e | 11248 | std::vector<mem_region> result; |
9018be22 | 11249 | gdb::optional<gdb::char_vector> text |
8b88a78e | 11250 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11251 | |
11252 | if (text) | |
9018be22 | 11253 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11254 | |
11255 | return result; | |
11256 | } | |
11257 | ||
c906108c | 11258 | static void |
ac88e2de | 11259 | packet_command (const char *args, int from_tty) |
c906108c | 11260 | { |
6b8edb51 | 11261 | remote_target *remote = get_current_remote_target (); |
c906108c | 11262 | |
6b8edb51 | 11263 | if (remote == nullptr) |
8a3fe4f8 | 11264 | error (_("command can only be used with remote target")); |
c906108c | 11265 | |
6b8edb51 PA |
11266 | remote->packet_command (args, from_tty); |
11267 | } | |
11268 | ||
11269 | void | |
11270 | remote_target::packet_command (const char *args, int from_tty) | |
11271 | { | |
c5aa993b | 11272 | if (!args) |
8a3fe4f8 | 11273 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11274 | |
11275 | puts_filtered ("sending: "); | |
11276 | print_packet (args); | |
11277 | puts_filtered ("\n"); | |
11278 | putpkt (args); | |
11279 | ||
6b8edb51 PA |
11280 | remote_state *rs = get_remote_state (); |
11281 | ||
6d820c5c | 11282 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 11283 | puts_filtered ("received: "); |
6d820c5c | 11284 | print_packet (rs->buf); |
c906108c SS |
11285 | puts_filtered ("\n"); |
11286 | } | |
11287 | ||
11288 | #if 0 | |
23860348 | 11289 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11290 | |
a14ed312 | 11291 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11292 | |
a14ed312 | 11293 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11294 | |
a14ed312 | 11295 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11296 | |
a14ed312 | 11297 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11298 | |
23860348 | 11299 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11300 | |
a14ed312 | 11301 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11302 | |
23860348 | 11303 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11304 | |
a14ed312 | 11305 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11306 | |
a14ed312 | 11307 | static void init_remote_threadtests (void); |
c906108c | 11308 | |
23860348 | 11309 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11310 | |
11311 | static void | |
0b39b52e | 11312 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11313 | { |
11314 | int sample_thread = SAMPLE_THREAD; | |
11315 | ||
a3f17187 | 11316 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11317 | set_general_thread (sample_thread); |
c906108c SS |
11318 | } |
11319 | ||
11320 | ||
11321 | static void | |
0b39b52e | 11322 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11323 | { |
11324 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 11325 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 11326 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 11327 | |
79d7f229 | 11328 | if (remote_thread_alive (ptid)) |
c906108c SS |
11329 | printf_filtered ("PASS: Thread alive test\n"); |
11330 | else | |
11331 | printf_filtered ("FAIL: Thread alive test\n"); | |
11332 | } | |
11333 | ||
23860348 | 11334 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11335 | |
11336 | void | |
fba45db2 | 11337 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11338 | { |
11339 | char hexid[20]; | |
11340 | ||
23860348 | 11341 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
11342 | hexid[16] = 0; |
11343 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11344 | } | |
11345 | ||
11346 | static void | |
0b39b52e | 11347 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11348 | { |
11349 | int startflag = 1; | |
11350 | threadref nextthread; | |
11351 | int done, result_count; | |
11352 | threadref threadlist[3]; | |
11353 | ||
11354 | printf_filtered ("Remote Threadlist test\n"); | |
11355 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11356 | &result_count, &threadlist[0])) | |
11357 | printf_filtered ("FAIL: threadlist test\n"); | |
11358 | else | |
11359 | { | |
11360 | threadref *scan = threadlist; | |
11361 | threadref *limit = scan + result_count; | |
11362 | ||
11363 | while (scan < limit) | |
11364 | output_threadid (" thread ", scan++); | |
11365 | } | |
11366 | } | |
11367 | ||
11368 | void | |
fba45db2 | 11369 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11370 | { |
11371 | output_threadid ("Threadid: ", &info->threadid); | |
11372 | printf_filtered ("Name: %s\n ", info->shortname); | |
11373 | printf_filtered ("State: %s\n", info->display); | |
11374 | printf_filtered ("other: %s\n\n", info->more_display); | |
11375 | } | |
11376 | ||
11377 | int | |
fba45db2 | 11378 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11379 | { |
11380 | int result; | |
11381 | int set; | |
11382 | struct gdb_ext_thread_info threadinfo; | |
11383 | ||
11384 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11385 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11386 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11387 | display_thread_info (&threadinfo); | |
11388 | return result; | |
11389 | } | |
11390 | ||
11391 | static void | |
0b39b52e | 11392 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11393 | { |
11394 | int athread = SAMPLE_THREAD; | |
11395 | threadref thread; | |
11396 | int set; | |
11397 | ||
11398 | int_to_threadref (&thread, athread); | |
11399 | printf_filtered ("Remote Threadinfo test\n"); | |
11400 | if (!get_and_display_threadinfo (&thread)) | |
11401 | printf_filtered ("FAIL cannot get thread info\n"); | |
11402 | } | |
11403 | ||
11404 | static int | |
fba45db2 | 11405 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11406 | { |
11407 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11408 | return get_and_display_threadinfo (ref); | |
11409 | } | |
11410 | ||
11411 | static void | |
0b39b52e | 11412 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11413 | { |
11414 | printf_filtered ("Remote Threadlist update test\n"); | |
11415 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11416 | } | |
11417 | ||
11418 | static void | |
11419 | init_remote_threadtests (void) | |
11420 | { | |
3e43a32a MS |
11421 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11422 | _("Fetch and print the remote list of " | |
11423 | "thread identifiers, one pkt only")); | |
c906108c | 11424 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 11425 | _("Fetch and display info about one thread")); |
c906108c | 11426 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 11427 | _("Test setting to a different thread")); |
c906108c | 11428 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 11429 | _("Iterate through updating all remote thread info")); |
c906108c | 11430 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 11431 | _(" Remote thread alive test ")); |
c906108c SS |
11432 | } |
11433 | ||
11434 | #endif /* 0 */ | |
11435 | ||
f3fb8c85 MS |
11436 | /* Convert a thread ID to a string. Returns the string in a static |
11437 | buffer. */ | |
11438 | ||
f6ac5f3d PA |
11439 | const char * |
11440 | remote_target::pid_to_str (ptid_t ptid) | |
f3fb8c85 | 11441 | { |
79d7f229 | 11442 | static char buf[64]; |
82f73884 | 11443 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11444 | |
7cee1e54 PA |
11445 | if (ptid_equal (ptid, null_ptid)) |
11446 | return normal_pid_to_str (ptid); | |
11447 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
11448 | { |
11449 | /* Printing an inferior target id. */ | |
11450 | ||
11451 | /* When multi-process extensions are off, there's no way in the | |
11452 | remote protocol to know the remote process id, if there's any | |
11453 | at all. There's one exception --- when we're connected with | |
11454 | target extended-remote, and we manually attached to a process | |
11455 | with "attach PID". We don't record anywhere a flag that | |
11456 | allows us to distinguish that case from the case of | |
11457 | connecting with extended-remote and the stub already being | |
11458 | attached to a process, and reporting yes to qAttached, hence | |
11459 | no smart special casing here. */ | |
11460 | if (!remote_multi_process_p (rs)) | |
11461 | { | |
11462 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11463 | return buf; | |
11464 | } | |
11465 | ||
11466 | return normal_pid_to_str (ptid); | |
82f73884 | 11467 | } |
ecd0ada5 | 11468 | else |
79d7f229 | 11469 | { |
ecd0ada5 PA |
11470 | if (ptid_equal (magic_null_ptid, ptid)) |
11471 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11472 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11473 | if (ptid_get_lwp (ptid) == 0) |
11474 | return normal_pid_to_str (ptid); | |
11475 | else | |
11476 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11477 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11478 | else |
11479 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11480 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11481 | return buf; |
11482 | } | |
f3fb8c85 MS |
11483 | } |
11484 | ||
38691318 KB |
11485 | /* Get the address of the thread local variable in OBJFILE which is |
11486 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11487 | ||
f6ac5f3d PA |
11488 | CORE_ADDR |
11489 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11490 | CORE_ADDR offset) | |
38691318 | 11491 | { |
4082afcc | 11492 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11493 | { |
11494 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11495 | char *p = rs->buf; |
82f73884 | 11496 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11497 | enum packet_result result; |
38691318 KB |
11498 | |
11499 | strcpy (p, "qGetTLSAddr:"); | |
11500 | p += strlen (p); | |
82f73884 | 11501 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11502 | *p++ = ','; |
11503 | p += hexnumstr (p, offset); | |
11504 | *p++ = ','; | |
11505 | p += hexnumstr (p, lm); | |
11506 | *p++ = '\0'; | |
11507 | ||
6d820c5c DJ |
11508 | putpkt (rs->buf); |
11509 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11510 | result = packet_ok (rs->buf, |
11511 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11512 | if (result == PACKET_OK) |
38691318 KB |
11513 | { |
11514 | ULONGEST result; | |
11515 | ||
6d820c5c | 11516 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11517 | return result; |
11518 | } | |
571dd617 | 11519 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11520 | throw_error (TLS_GENERIC_ERROR, |
11521 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11522 | else |
109c3e39 AC |
11523 | throw_error (TLS_GENERIC_ERROR, |
11524 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11525 | } |
11526 | else | |
109c3e39 AC |
11527 | throw_error (TLS_GENERIC_ERROR, |
11528 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11529 | /* Not reached. */ |
11530 | return 0; | |
11531 | } | |
11532 | ||
711e434b PM |
11533 | /* Provide thread local base, i.e. Thread Information Block address. |
11534 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11535 | ||
57810aa7 | 11536 | bool |
f6ac5f3d | 11537 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11538 | { |
4082afcc | 11539 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11540 | { |
11541 | struct remote_state *rs = get_remote_state (); | |
11542 | char *p = rs->buf; | |
11543 | char *endp = rs->buf + get_remote_packet_size (); | |
11544 | enum packet_result result; | |
11545 | ||
11546 | strcpy (p, "qGetTIBAddr:"); | |
11547 | p += strlen (p); | |
11548 | p = write_ptid (p, endp, ptid); | |
11549 | *p++ = '\0'; | |
11550 | ||
11551 | putpkt (rs->buf); | |
11552 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11553 | result = packet_ok (rs->buf, | |
11554 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11555 | if (result == PACKET_OK) | |
11556 | { | |
11557 | ULONGEST result; | |
11558 | ||
11559 | unpack_varlen_hex (rs->buf, &result); | |
11560 | if (addr) | |
11561 | *addr = (CORE_ADDR) result; | |
57810aa7 | 11562 | return true; |
711e434b PM |
11563 | } |
11564 | else if (result == PACKET_UNKNOWN) | |
11565 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11566 | else | |
11567 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11568 | } | |
11569 | else | |
11570 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11571 | /* Not reached. */ | |
57810aa7 | 11572 | return false; |
711e434b PM |
11573 | } |
11574 | ||
29709017 DJ |
11575 | /* Support for inferring a target description based on the current |
11576 | architecture and the size of a 'g' packet. While the 'g' packet | |
11577 | can have any size (since optional registers can be left off the | |
11578 | end), some sizes are easily recognizable given knowledge of the | |
11579 | approximate architecture. */ | |
11580 | ||
11581 | struct remote_g_packet_guess | |
11582 | { | |
11583 | int bytes; | |
11584 | const struct target_desc *tdesc; | |
11585 | }; | |
11586 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11587 | DEF_VEC_O(remote_g_packet_guess_s); | |
11588 | ||
11589 | struct remote_g_packet_data | |
11590 | { | |
11591 | VEC(remote_g_packet_guess_s) *guesses; | |
11592 | }; | |
11593 | ||
11594 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11595 | ||
11596 | static void * | |
11597 | remote_g_packet_data_init (struct obstack *obstack) | |
11598 | { | |
11599 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11600 | } | |
11601 | ||
11602 | void | |
11603 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11604 | const struct target_desc *tdesc) | |
11605 | { | |
11606 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11607 | = ((struct remote_g_packet_data *) |
11608 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11609 | struct remote_g_packet_guess new_guess, *guess; |
11610 | int ix; | |
11611 | ||
11612 | gdb_assert (tdesc != NULL); | |
11613 | ||
11614 | for (ix = 0; | |
11615 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11616 | ix++) | |
11617 | if (guess->bytes == bytes) | |
11618 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11619 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11620 | bytes); |
11621 | ||
11622 | new_guess.bytes = bytes; | |
11623 | new_guess.tdesc = tdesc; | |
11624 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11625 | } | |
11626 | ||
d962ef82 DJ |
11627 | /* Return 1 if remote_read_description would do anything on this target |
11628 | and architecture, 0 otherwise. */ | |
11629 | ||
11630 | static int | |
11631 | remote_read_description_p (struct target_ops *target) | |
11632 | { | |
11633 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11634 | = ((struct remote_g_packet_data *) |
11635 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11636 | |
11637 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11638 | return 1; | |
11639 | ||
11640 | return 0; | |
11641 | } | |
11642 | ||
f6ac5f3d PA |
11643 | const struct target_desc * |
11644 | remote_target::read_description () | |
29709017 DJ |
11645 | { |
11646 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11647 | = ((struct remote_g_packet_data *) |
11648 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11649 | |
d962ef82 DJ |
11650 | /* Do not try this during initial connection, when we do not know |
11651 | whether there is a running but stopped thread. */ | |
11652 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
b6a8c27b | 11653 | return beneath ()->read_description (); |
d962ef82 | 11654 | |
29709017 DJ |
11655 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11656 | { | |
11657 | struct remote_g_packet_guess *guess; | |
11658 | int ix; | |
11659 | int bytes = send_g_packet (); | |
11660 | ||
11661 | for (ix = 0; | |
11662 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11663 | ix++) | |
11664 | if (guess->bytes == bytes) | |
11665 | return guess->tdesc; | |
11666 | ||
11667 | /* We discard the g packet. A minor optimization would be to | |
11668 | hold on to it, and fill the register cache once we have selected | |
11669 | an architecture, but it's too tricky to do safely. */ | |
11670 | } | |
11671 | ||
b6a8c27b | 11672 | return beneath ()->read_description (); |
29709017 DJ |
11673 | } |
11674 | ||
a6b151f1 DJ |
11675 | /* Remote file transfer support. This is host-initiated I/O, not |
11676 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11677 | ||
11678 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11679 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11680 | decrease *LEFT. Otherwise raise an error. */ | |
11681 | ||
11682 | static void | |
a121b7c1 | 11683 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11684 | { |
11685 | int len = strlen (string); | |
11686 | ||
11687 | if (len > *left) | |
11688 | error (_("Packet too long for target.")); | |
11689 | ||
11690 | memcpy (*buffer, string, len); | |
11691 | *buffer += len; | |
11692 | *left -= len; | |
11693 | ||
11694 | /* NUL-terminate the buffer as a convenience, if there is | |
11695 | room. */ | |
11696 | if (*left) | |
11697 | **buffer = '\0'; | |
11698 | } | |
11699 | ||
11700 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11701 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11702 | decrease *LEFT. Otherwise raise an error. */ | |
11703 | ||
11704 | static void | |
11705 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11706 | int len) | |
11707 | { | |
11708 | if (2 * len > *left) | |
11709 | error (_("Packet too long for target.")); | |
11710 | ||
11711 | bin2hex (bytes, *buffer, len); | |
11712 | *buffer += 2 * len; | |
11713 | *left -= 2 * len; | |
11714 | ||
11715 | /* NUL-terminate the buffer as a convenience, if there is | |
11716 | room. */ | |
11717 | if (*left) | |
11718 | **buffer = '\0'; | |
11719 | } | |
11720 | ||
11721 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11722 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11723 | decrease *LEFT. Otherwise raise an error. */ | |
11724 | ||
11725 | static void | |
11726 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11727 | { | |
11728 | int len = hexnumlen (value); | |
11729 | ||
11730 | if (len > *left) | |
11731 | error (_("Packet too long for target.")); | |
11732 | ||
11733 | hexnumstr (*buffer, value); | |
11734 | *buffer += len; | |
11735 | *left -= len; | |
11736 | ||
11737 | /* NUL-terminate the buffer as a convenience, if there is | |
11738 | room. */ | |
11739 | if (*left) | |
11740 | **buffer = '\0'; | |
11741 | } | |
11742 | ||
11743 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11744 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11745 | was included, and *ATTACHMENT to point to the start of the annex | |
11746 | if any. The length of the packet isn't needed here; there may | |
11747 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11748 | ||
11749 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11750 | -1 is returned, the other variables may not be initialized. */ | |
11751 | ||
11752 | static int | |
11753 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11754 | int *remote_errno, char **attachment) | |
11755 | { | |
11756 | char *p, *p2; | |
11757 | ||
11758 | *remote_errno = 0; | |
11759 | *attachment = NULL; | |
11760 | ||
11761 | if (buffer[0] != 'F') | |
11762 | return -1; | |
11763 | ||
11764 | errno = 0; | |
11765 | *retcode = strtol (&buffer[1], &p, 16); | |
11766 | if (errno != 0 || p == &buffer[1]) | |
11767 | return -1; | |
11768 | ||
11769 | /* Check for ",errno". */ | |
11770 | if (*p == ',') | |
11771 | { | |
11772 | errno = 0; | |
11773 | *remote_errno = strtol (p + 1, &p2, 16); | |
11774 | if (errno != 0 || p + 1 == p2) | |
11775 | return -1; | |
11776 | p = p2; | |
11777 | } | |
11778 | ||
11779 | /* Check for ";attachment". If there is no attachment, the | |
11780 | packet should end here. */ | |
11781 | if (*p == ';') | |
11782 | { | |
11783 | *attachment = p + 1; | |
11784 | return 0; | |
11785 | } | |
11786 | else if (*p == '\0') | |
11787 | return 0; | |
11788 | else | |
11789 | return -1; | |
11790 | } | |
11791 | ||
11792 | /* Send a prepared I/O packet to the target and read its response. | |
11793 | The prepared packet is in the global RS->BUF before this function | |
11794 | is called, and the answer is there when we return. | |
11795 | ||
11796 | COMMAND_BYTES is the length of the request to send, which may include | |
11797 | binary data. WHICH_PACKET is the packet configuration to check | |
11798 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11799 | is set to the error number and -1 is returned. Otherwise the value | |
11800 | returned by the function is returned. | |
11801 | ||
11802 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11803 | attachment is expected; an error will be reported if there's a | |
11804 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11805 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11806 | attachment's length. */ | |
11807 | ||
6b8edb51 PA |
11808 | int |
11809 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
11810 | int *remote_errno, char **attachment, | |
11811 | int *attachment_len) | |
a6b151f1 DJ |
11812 | { |
11813 | struct remote_state *rs = get_remote_state (); | |
11814 | int ret, bytes_read; | |
11815 | char *attachment_tmp; | |
11816 | ||
20db9c52 | 11817 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11818 | { |
11819 | *remote_errno = FILEIO_ENOSYS; | |
11820 | return -1; | |
11821 | } | |
11822 | ||
11823 | putpkt_binary (rs->buf, command_bytes); | |
11824 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11825 | ||
11826 | /* If it timed out, something is wrong. Don't try to parse the | |
11827 | buffer. */ | |
11828 | if (bytes_read < 0) | |
11829 | { | |
11830 | *remote_errno = FILEIO_EINVAL; | |
11831 | return -1; | |
11832 | } | |
11833 | ||
11834 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11835 | { | |
11836 | case PACKET_ERROR: | |
11837 | *remote_errno = FILEIO_EINVAL; | |
11838 | return -1; | |
11839 | case PACKET_UNKNOWN: | |
11840 | *remote_errno = FILEIO_ENOSYS; | |
11841 | return -1; | |
11842 | case PACKET_OK: | |
11843 | break; | |
11844 | } | |
11845 | ||
11846 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11847 | &attachment_tmp)) | |
11848 | { | |
11849 | *remote_errno = FILEIO_EINVAL; | |
11850 | return -1; | |
11851 | } | |
11852 | ||
11853 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11854 | if ((attachment_tmp == NULL && attachment != NULL) | |
11855 | || (attachment_tmp != NULL && attachment == NULL)) | |
11856 | { | |
11857 | *remote_errno = FILEIO_EINVAL; | |
11858 | return -1; | |
11859 | } | |
11860 | ||
11861 | /* If an attachment was found, it must point into the packet buffer; | |
11862 | work out how many bytes there were. */ | |
11863 | if (attachment_tmp != NULL) | |
11864 | { | |
11865 | *attachment = attachment_tmp; | |
11866 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11867 | } | |
11868 | ||
11869 | return ret; | |
11870 | } | |
11871 | ||
dd194f6b | 11872 | /* See declaration.h. */ |
80152258 | 11873 | |
dd194f6b PA |
11874 | void |
11875 | readahead_cache::invalidate () | |
80152258 | 11876 | { |
dd194f6b | 11877 | this->fd = -1; |
80152258 PA |
11878 | } |
11879 | ||
dd194f6b | 11880 | /* See declaration.h. */ |
80152258 | 11881 | |
dd194f6b PA |
11882 | void |
11883 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 11884 | { |
dd194f6b PA |
11885 | if (this->fd == fd) |
11886 | this->fd = -1; | |
80152258 PA |
11887 | } |
11888 | ||
15a201c8 GB |
11889 | /* Set the filesystem remote_hostio functions that take FILENAME |
11890 | arguments will use. Return 0 on success, or -1 if an error | |
11891 | occurs (and set *REMOTE_ERRNO). */ | |
11892 | ||
6b8edb51 PA |
11893 | int |
11894 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
11895 | int *remote_errno) | |
15a201c8 GB |
11896 | { |
11897 | struct remote_state *rs = get_remote_state (); | |
11898 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11899 | char *p = rs->buf; | |
11900 | int left = get_remote_packet_size () - 1; | |
11901 | char arg[9]; | |
11902 | int ret; | |
11903 | ||
11904 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11905 | return 0; | |
11906 | ||
11907 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11908 | return 0; | |
11909 | ||
11910 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11911 | ||
11912 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11913 | remote_buffer_add_string (&p, &left, arg); | |
11914 | ||
11915 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11916 | remote_errno, NULL, NULL); | |
11917 | ||
11918 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11919 | return 0; | |
11920 | ||
11921 | if (ret == 0) | |
11922 | rs->fs_pid = required_pid; | |
11923 | ||
11924 | return ret; | |
11925 | } | |
11926 | ||
12e2a5fd | 11927 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 11928 | |
6b8edb51 PA |
11929 | int |
11930 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
11931 | int flags, int mode, int warn_if_slow, | |
11932 | int *remote_errno) | |
a6b151f1 DJ |
11933 | { |
11934 | struct remote_state *rs = get_remote_state (); | |
11935 | char *p = rs->buf; | |
11936 | int left = get_remote_packet_size () - 1; | |
11937 | ||
4313b8c0 GB |
11938 | if (warn_if_slow) |
11939 | { | |
11940 | static int warning_issued = 0; | |
11941 | ||
11942 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11943 | filename); | |
11944 | ||
11945 | if (!warning_issued) | |
11946 | { | |
11947 | warning (_("File transfers from remote targets can be slow." | |
11948 | " Use \"set sysroot\" to access files locally" | |
11949 | " instead.")); | |
11950 | warning_issued = 1; | |
11951 | } | |
11952 | } | |
11953 | ||
15a201c8 GB |
11954 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11955 | return -1; | |
11956 | ||
a6b151f1 DJ |
11957 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11958 | ||
11959 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11960 | strlen (filename)); | |
11961 | remote_buffer_add_string (&p, &left, ","); | |
11962 | ||
11963 | remote_buffer_add_int (&p, &left, flags); | |
11964 | remote_buffer_add_string (&p, &left, ","); | |
11965 | ||
11966 | remote_buffer_add_int (&p, &left, mode); | |
11967 | ||
11968 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11969 | remote_errno, NULL, NULL); | |
11970 | } | |
11971 | ||
f6ac5f3d PA |
11972 | int |
11973 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
11974 | int flags, int mode, int warn_if_slow, | |
11975 | int *remote_errno) | |
11976 | { | |
6b8edb51 | 11977 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
11978 | remote_errno); |
11979 | } | |
11980 | ||
12e2a5fd | 11981 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 11982 | |
6b8edb51 PA |
11983 | int |
11984 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11985 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11986 | { |
11987 | struct remote_state *rs = get_remote_state (); | |
11988 | char *p = rs->buf; | |
11989 | int left = get_remote_packet_size (); | |
11990 | int out_len; | |
11991 | ||
dd194f6b | 11992 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 11993 | |
a6b151f1 DJ |
11994 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11995 | ||
11996 | remote_buffer_add_int (&p, &left, fd); | |
11997 | remote_buffer_add_string (&p, &left, ","); | |
11998 | ||
11999 | remote_buffer_add_int (&p, &left, offset); | |
12000 | remote_buffer_add_string (&p, &left, ","); | |
12001 | ||
124e13d9 | 12002 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
12003 | get_remote_packet_size () - (p - rs->buf)); |
12004 | ||
12005 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
12006 | remote_errno, NULL, NULL); | |
12007 | } | |
12008 | ||
f6ac5f3d PA |
12009 | int |
12010 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12011 | ULONGEST offset, int *remote_errno) | |
12012 | { | |
6b8edb51 | 12013 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12014 | } |
12015 | ||
80152258 PA |
12016 | /* Helper for the implementation of to_fileio_pread. Read the file |
12017 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12018 | |
6b8edb51 PA |
12019 | int |
12020 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12021 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12022 | { |
12023 | struct remote_state *rs = get_remote_state (); | |
12024 | char *p = rs->buf; | |
12025 | char *attachment; | |
12026 | int left = get_remote_packet_size (); | |
12027 | int ret, attachment_len; | |
12028 | int read_len; | |
12029 | ||
12030 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12031 | ||
12032 | remote_buffer_add_int (&p, &left, fd); | |
12033 | remote_buffer_add_string (&p, &left, ","); | |
12034 | ||
12035 | remote_buffer_add_int (&p, &left, len); | |
12036 | remote_buffer_add_string (&p, &left, ","); | |
12037 | ||
12038 | remote_buffer_add_int (&p, &left, offset); | |
12039 | ||
12040 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
12041 | remote_errno, &attachment, | |
12042 | &attachment_len); | |
12043 | ||
12044 | if (ret < 0) | |
12045 | return ret; | |
12046 | ||
bc20a4af | 12047 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12048 | read_buf, len); |
12049 | if (read_len != ret) | |
12050 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12051 | ||
12052 | return ret; | |
12053 | } | |
12054 | ||
dd194f6b | 12055 | /* See declaration.h. */ |
80152258 | 12056 | |
dd194f6b PA |
12057 | int |
12058 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12059 | ULONGEST offset) | |
80152258 | 12060 | { |
dd194f6b PA |
12061 | if (this->fd == fd |
12062 | && this->offset <= offset | |
12063 | && offset < this->offset + this->bufsize) | |
80152258 | 12064 | { |
dd194f6b | 12065 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12066 | |
12067 | if (offset + len > max) | |
12068 | len = max - offset; | |
12069 | ||
dd194f6b | 12070 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12071 | return len; |
12072 | } | |
12073 | ||
12074 | return 0; | |
12075 | } | |
12076 | ||
12077 | /* Implementation of to_fileio_pread. */ | |
12078 | ||
6b8edb51 PA |
12079 | int |
12080 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12081 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12082 | { |
12083 | int ret; | |
12084 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12085 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12086 | |
dd194f6b | 12087 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12088 | if (ret > 0) |
12089 | { | |
12090 | cache->hit_count++; | |
12091 | ||
12092 | if (remote_debug) | |
12093 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
12094 | pulongest (cache->hit_count)); | |
12095 | return ret; | |
12096 | } | |
12097 | ||
12098 | cache->miss_count++; | |
12099 | if (remote_debug) | |
12100 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
12101 | pulongest (cache->miss_count)); | |
12102 | ||
12103 | cache->fd = fd; | |
12104 | cache->offset = offset; | |
12105 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12106 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12107 | |
6b8edb51 | 12108 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12109 | cache->offset, remote_errno); |
12110 | if (ret <= 0) | |
12111 | { | |
dd194f6b | 12112 | cache->invalidate_fd (fd); |
80152258 PA |
12113 | return ret; |
12114 | } | |
12115 | ||
12116 | cache->bufsize = ret; | |
dd194f6b | 12117 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12118 | } |
12119 | ||
f6ac5f3d PA |
12120 | int |
12121 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12122 | ULONGEST offset, int *remote_errno) | |
12123 | { | |
6b8edb51 | 12124 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12125 | } |
12126 | ||
12e2a5fd | 12127 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12128 | |
6b8edb51 PA |
12129 | int |
12130 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12131 | { |
12132 | struct remote_state *rs = get_remote_state (); | |
12133 | char *p = rs->buf; | |
12134 | int left = get_remote_packet_size () - 1; | |
12135 | ||
dd194f6b | 12136 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12137 | |
a6b151f1 DJ |
12138 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12139 | ||
12140 | remote_buffer_add_int (&p, &left, fd); | |
12141 | ||
12142 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
12143 | remote_errno, NULL, NULL); | |
12144 | } | |
12145 | ||
f6ac5f3d PA |
12146 | int |
12147 | remote_target::fileio_close (int fd, int *remote_errno) | |
12148 | { | |
6b8edb51 | 12149 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12150 | } |
12151 | ||
12e2a5fd | 12152 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12153 | |
6b8edb51 PA |
12154 | int |
12155 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12156 | int *remote_errno) | |
a6b151f1 DJ |
12157 | { |
12158 | struct remote_state *rs = get_remote_state (); | |
12159 | char *p = rs->buf; | |
12160 | int left = get_remote_packet_size () - 1; | |
12161 | ||
15a201c8 GB |
12162 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12163 | return -1; | |
12164 | ||
a6b151f1 DJ |
12165 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12166 | ||
12167 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12168 | strlen (filename)); | |
12169 | ||
12170 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
12171 | remote_errno, NULL, NULL); | |
12172 | } | |
12173 | ||
f6ac5f3d PA |
12174 | int |
12175 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12176 | int *remote_errno) | |
12177 | { | |
6b8edb51 | 12178 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12179 | } |
12180 | ||
12e2a5fd | 12181 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12182 | |
f6ac5f3d PA |
12183 | gdb::optional<std::string> |
12184 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12185 | int *remote_errno) | |
b9e7b9c3 UW |
12186 | { |
12187 | struct remote_state *rs = get_remote_state (); | |
12188 | char *p = rs->buf; | |
12189 | char *attachment; | |
12190 | int left = get_remote_packet_size (); | |
12191 | int len, attachment_len; | |
12192 | int read_len; | |
b9e7b9c3 | 12193 | |
15a201c8 | 12194 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12195 | return {}; |
15a201c8 | 12196 | |
b9e7b9c3 UW |
12197 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12198 | ||
12199 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12200 | strlen (filename)); | |
12201 | ||
12202 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
12203 | remote_errno, &attachment, | |
12204 | &attachment_len); | |
12205 | ||
12206 | if (len < 0) | |
e0d3522b | 12207 | return {}; |
b9e7b9c3 | 12208 | |
e0d3522b | 12209 | std::string ret (len, '\0'); |
b9e7b9c3 | 12210 | |
bc20a4af | 12211 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12212 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12213 | if (read_len != len) |
12214 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12215 | ||
b9e7b9c3 UW |
12216 | return ret; |
12217 | } | |
12218 | ||
12e2a5fd | 12219 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12220 | |
f6ac5f3d PA |
12221 | int |
12222 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12223 | { |
12224 | struct remote_state *rs = get_remote_state (); | |
12225 | char *p = rs->buf; | |
12226 | int left = get_remote_packet_size (); | |
12227 | int attachment_len, ret; | |
12228 | char *attachment; | |
12229 | struct fio_stat fst; | |
12230 | int read_len; | |
12231 | ||
464b0089 GB |
12232 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12233 | ||
12234 | remote_buffer_add_int (&p, &left, fd); | |
12235 | ||
12236 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
12237 | remote_errno, &attachment, | |
12238 | &attachment_len); | |
12239 | if (ret < 0) | |
0a93529c | 12240 | { |
464b0089 GB |
12241 | if (*remote_errno != FILEIO_ENOSYS) |
12242 | return ret; | |
12243 | ||
0a93529c GB |
12244 | /* Strictly we should return -1, ENOSYS here, but when |
12245 | "set sysroot remote:" was implemented in August 2008 | |
12246 | BFD's need for a stat function was sidestepped with | |
12247 | this hack. This was not remedied until March 2015 | |
12248 | so we retain the previous behavior to avoid breaking | |
12249 | compatibility. | |
12250 | ||
12251 | Note that the memset is a March 2015 addition; older | |
12252 | GDBs set st_size *and nothing else* so the structure | |
12253 | would have garbage in all other fields. This might | |
12254 | break something but retaining the previous behavior | |
12255 | here would be just too wrong. */ | |
12256 | ||
12257 | memset (st, 0, sizeof (struct stat)); | |
12258 | st->st_size = INT_MAX; | |
12259 | return 0; | |
12260 | } | |
12261 | ||
0a93529c GB |
12262 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12263 | (gdb_byte *) &fst, sizeof (fst)); | |
12264 | ||
12265 | if (read_len != ret) | |
12266 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12267 | ||
12268 | if (read_len != sizeof (fst)) | |
12269 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12270 | read_len, (int) sizeof (fst)); | |
12271 | ||
12272 | remote_fileio_to_host_stat (&fst, st); | |
12273 | ||
12274 | return 0; | |
12275 | } | |
12276 | ||
12e2a5fd | 12277 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12278 | |
57810aa7 | 12279 | bool |
f6ac5f3d | 12280 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12281 | { |
12282 | /* Valgrind GDB presents itself as a remote target but works | |
12283 | on the local filesystem: it does not implement remote get | |
12284 | and users are not expected to set a sysroot. To handle | |
12285 | this case we treat the remote filesystem as local if the | |
12286 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12287 | does not support vFile:open. */ | |
a3be80c3 | 12288 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12289 | { |
12290 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12291 | ||
12292 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12293 | { | |
12294 | int fd, remote_errno; | |
12295 | ||
12296 | /* Try opening a file to probe support. The supplied | |
12297 | filename is irrelevant, we only care about whether | |
12298 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12299 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12300 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12301 | &remote_errno); |
12302 | ||
12303 | if (fd >= 0) | |
6b8edb51 | 12304 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12305 | |
12306 | ps = packet_support (PACKET_vFile_open); | |
12307 | } | |
12308 | ||
12309 | if (ps == PACKET_DISABLE) | |
12310 | { | |
12311 | static int warning_issued = 0; | |
12312 | ||
12313 | if (!warning_issued) | |
12314 | { | |
12315 | warning (_("remote target does not support file" | |
12316 | " transfer, attempting to access files" | |
12317 | " from local filesystem.")); | |
12318 | warning_issued = 1; | |
12319 | } | |
12320 | ||
57810aa7 | 12321 | return true; |
e3dd7556 GB |
12322 | } |
12323 | } | |
12324 | ||
57810aa7 | 12325 | return false; |
e3dd7556 GB |
12326 | } |
12327 | ||
a6b151f1 DJ |
12328 | static int |
12329 | remote_fileio_errno_to_host (int errnum) | |
12330 | { | |
12331 | switch (errnum) | |
12332 | { | |
12333 | case FILEIO_EPERM: | |
12334 | return EPERM; | |
12335 | case FILEIO_ENOENT: | |
12336 | return ENOENT; | |
12337 | case FILEIO_EINTR: | |
12338 | return EINTR; | |
12339 | case FILEIO_EIO: | |
12340 | return EIO; | |
12341 | case FILEIO_EBADF: | |
12342 | return EBADF; | |
12343 | case FILEIO_EACCES: | |
12344 | return EACCES; | |
12345 | case FILEIO_EFAULT: | |
12346 | return EFAULT; | |
12347 | case FILEIO_EBUSY: | |
12348 | return EBUSY; | |
12349 | case FILEIO_EEXIST: | |
12350 | return EEXIST; | |
12351 | case FILEIO_ENODEV: | |
12352 | return ENODEV; | |
12353 | case FILEIO_ENOTDIR: | |
12354 | return ENOTDIR; | |
12355 | case FILEIO_EISDIR: | |
12356 | return EISDIR; | |
12357 | case FILEIO_EINVAL: | |
12358 | return EINVAL; | |
12359 | case FILEIO_ENFILE: | |
12360 | return ENFILE; | |
12361 | case FILEIO_EMFILE: | |
12362 | return EMFILE; | |
12363 | case FILEIO_EFBIG: | |
12364 | return EFBIG; | |
12365 | case FILEIO_ENOSPC: | |
12366 | return ENOSPC; | |
12367 | case FILEIO_ESPIPE: | |
12368 | return ESPIPE; | |
12369 | case FILEIO_EROFS: | |
12370 | return EROFS; | |
12371 | case FILEIO_ENOSYS: | |
12372 | return ENOSYS; | |
12373 | case FILEIO_ENAMETOOLONG: | |
12374 | return ENAMETOOLONG; | |
12375 | } | |
12376 | return -1; | |
12377 | } | |
12378 | ||
12379 | static char * | |
12380 | remote_hostio_error (int errnum) | |
12381 | { | |
12382 | int host_error = remote_fileio_errno_to_host (errnum); | |
12383 | ||
12384 | if (host_error == -1) | |
12385 | error (_("Unknown remote I/O error %d"), errnum); | |
12386 | else | |
12387 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12388 | } | |
12389 | ||
440b7aec PA |
12390 | /* A RAII wrapper around a remote file descriptor. */ |
12391 | ||
12392 | class scoped_remote_fd | |
a6b151f1 | 12393 | { |
440b7aec | 12394 | public: |
6b8edb51 PA |
12395 | scoped_remote_fd (remote_target *remote, int fd) |
12396 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12397 | { |
12398 | } | |
a6b151f1 | 12399 | |
440b7aec PA |
12400 | ~scoped_remote_fd () |
12401 | { | |
12402 | if (m_fd != -1) | |
12403 | { | |
12404 | try | |
12405 | { | |
12406 | int remote_errno; | |
6b8edb51 | 12407 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12408 | } |
12409 | catch (...) | |
12410 | { | |
12411 | /* Swallow exception before it escapes the dtor. If | |
12412 | something goes wrong, likely the connection is gone, | |
12413 | and there's nothing else that can be done. */ | |
12414 | } | |
12415 | } | |
12416 | } | |
12417 | ||
12418 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12419 | ||
12420 | /* Release ownership of the file descriptor, and return it. */ | |
12421 | int release () noexcept | |
12422 | { | |
12423 | int fd = m_fd; | |
12424 | m_fd = -1; | |
12425 | return fd; | |
12426 | } | |
12427 | ||
12428 | /* Return the owned file descriptor. */ | |
12429 | int get () const noexcept | |
12430 | { | |
12431 | return m_fd; | |
12432 | } | |
12433 | ||
12434 | private: | |
6b8edb51 PA |
12435 | /* The remote target. */ |
12436 | remote_target *m_remote; | |
12437 | ||
440b7aec PA |
12438 | /* The owned remote I/O file descriptor. */ |
12439 | int m_fd; | |
12440 | }; | |
a6b151f1 DJ |
12441 | |
12442 | void | |
12443 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12444 | { |
12445 | remote_target *remote = get_current_remote_target (); | |
12446 | ||
12447 | if (remote == nullptr) | |
12448 | error (_("command can only be used with remote target")); | |
12449 | ||
12450 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12451 | } | |
12452 | ||
12453 | void | |
12454 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12455 | int from_tty) | |
a6b151f1 | 12456 | { |
440b7aec | 12457 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12458 | int bytes_in_buffer; |
12459 | int saw_eof; | |
12460 | ULONGEST offset; | |
a6b151f1 | 12461 | |
d419f42d | 12462 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12463 | if (file == NULL) |
12464 | perror_with_name (local_file); | |
a6b151f1 | 12465 | |
440b7aec | 12466 | scoped_remote_fd fd |
6b8edb51 PA |
12467 | (this, remote_hostio_open (NULL, |
12468 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12469 | | FILEIO_O_TRUNC), | |
12470 | 0700, 0, &remote_errno)); | |
440b7aec | 12471 | if (fd.get () == -1) |
a6b151f1 DJ |
12472 | remote_hostio_error (remote_errno); |
12473 | ||
12474 | /* Send up to this many bytes at once. They won't all fit in the | |
12475 | remote packet limit, so we'll transfer slightly fewer. */ | |
12476 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12477 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12478 | |
a6b151f1 DJ |
12479 | bytes_in_buffer = 0; |
12480 | saw_eof = 0; | |
12481 | offset = 0; | |
12482 | while (bytes_in_buffer || !saw_eof) | |
12483 | { | |
12484 | if (!saw_eof) | |
12485 | { | |
5ca3b260 | 12486 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12487 | io_size - bytes_in_buffer, |
d419f42d | 12488 | file.get ()); |
a6b151f1 DJ |
12489 | if (bytes == 0) |
12490 | { | |
d419f42d | 12491 | if (ferror (file.get ())) |
a6b151f1 DJ |
12492 | error (_("Error reading %s."), local_file); |
12493 | else | |
12494 | { | |
12495 | /* EOF. Unless there is something still in the | |
12496 | buffer from the last iteration, we are done. */ | |
12497 | saw_eof = 1; | |
12498 | if (bytes_in_buffer == 0) | |
12499 | break; | |
12500 | } | |
12501 | } | |
12502 | } | |
12503 | else | |
12504 | bytes = 0; | |
12505 | ||
12506 | bytes += bytes_in_buffer; | |
12507 | bytes_in_buffer = 0; | |
12508 | ||
5ca3b260 | 12509 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12510 | offset, &remote_errno); |
a6b151f1 DJ |
12511 | |
12512 | if (retcode < 0) | |
12513 | remote_hostio_error (remote_errno); | |
12514 | else if (retcode == 0) | |
12515 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12516 | else if (retcode < bytes) | |
12517 | { | |
12518 | /* Short write. Save the rest of the read data for the next | |
12519 | write. */ | |
12520 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12521 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12522 | } |
12523 | ||
12524 | offset += retcode; | |
12525 | } | |
12526 | ||
6b8edb51 | 12527 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12528 | remote_hostio_error (remote_errno); |
12529 | ||
12530 | if (from_tty) | |
12531 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12532 | } |
12533 | ||
12534 | void | |
12535 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12536 | { |
12537 | remote_target *remote = get_current_remote_target (); | |
12538 | ||
12539 | if (remote == nullptr) | |
12540 | error (_("command can only be used with remote target")); | |
12541 | ||
12542 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12543 | } | |
12544 | ||
12545 | void | |
12546 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12547 | int from_tty) | |
a6b151f1 | 12548 | { |
440b7aec | 12549 | int remote_errno, bytes, io_size; |
a6b151f1 | 12550 | ULONGEST offset; |
a6b151f1 | 12551 | |
440b7aec | 12552 | scoped_remote_fd fd |
6b8edb51 PA |
12553 | (this, remote_hostio_open (NULL, |
12554 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12555 | &remote_errno)); | |
440b7aec | 12556 | if (fd.get () == -1) |
a6b151f1 DJ |
12557 | remote_hostio_error (remote_errno); |
12558 | ||
d419f42d | 12559 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12560 | if (file == NULL) |
12561 | perror_with_name (local_file); | |
a6b151f1 DJ |
12562 | |
12563 | /* Send up to this many bytes at once. They won't all fit in the | |
12564 | remote packet limit, so we'll transfer slightly fewer. */ | |
12565 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12566 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12567 | |
a6b151f1 DJ |
12568 | offset = 0; |
12569 | while (1) | |
12570 | { | |
5ca3b260 | 12571 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12572 | &remote_errno); |
a6b151f1 DJ |
12573 | if (bytes == 0) |
12574 | /* Success, but no bytes, means end-of-file. */ | |
12575 | break; | |
12576 | if (bytes == -1) | |
12577 | remote_hostio_error (remote_errno); | |
12578 | ||
12579 | offset += bytes; | |
12580 | ||
5ca3b260 | 12581 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12582 | if (bytes == 0) |
12583 | perror_with_name (local_file); | |
12584 | } | |
12585 | ||
6b8edb51 | 12586 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12587 | remote_hostio_error (remote_errno); |
12588 | ||
12589 | if (from_tty) | |
12590 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12591 | } |
12592 | ||
12593 | void | |
12594 | remote_file_delete (const char *remote_file, int from_tty) | |
12595 | { | |
6b8edb51 | 12596 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12597 | |
6b8edb51 | 12598 | if (remote == nullptr) |
a6b151f1 DJ |
12599 | error (_("command can only be used with remote target")); |
12600 | ||
6b8edb51 PA |
12601 | remote->remote_file_delete (remote_file, from_tty); |
12602 | } | |
12603 | ||
12604 | void | |
12605 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12606 | { | |
12607 | int retcode, remote_errno; | |
12608 | ||
12609 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12610 | if (retcode == -1) |
12611 | remote_hostio_error (remote_errno); | |
12612 | ||
12613 | if (from_tty) | |
12614 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12615 | } | |
12616 | ||
12617 | static void | |
ac88e2de | 12618 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12619 | { |
d1a41061 PP |
12620 | if (args == NULL) |
12621 | error_no_arg (_("file to put")); | |
12622 | ||
773a1edc | 12623 | gdb_argv argv (args); |
a6b151f1 DJ |
12624 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12625 | error (_("Invalid parameters to remote put")); | |
12626 | ||
12627 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12628 | } |
12629 | ||
12630 | static void | |
ac88e2de | 12631 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12632 | { |
d1a41061 PP |
12633 | if (args == NULL) |
12634 | error_no_arg (_("file to get")); | |
12635 | ||
773a1edc | 12636 | gdb_argv argv (args); |
a6b151f1 DJ |
12637 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12638 | error (_("Invalid parameters to remote get")); | |
12639 | ||
12640 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12641 | } |
12642 | ||
12643 | static void | |
ac88e2de | 12644 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12645 | { |
d1a41061 PP |
12646 | if (args == NULL) |
12647 | error_no_arg (_("file to delete")); | |
12648 | ||
773a1edc | 12649 | gdb_argv argv (args); |
a6b151f1 DJ |
12650 | if (argv[0] == NULL || argv[1] != NULL) |
12651 | error (_("Invalid parameters to remote delete")); | |
12652 | ||
12653 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12654 | } |
12655 | ||
12656 | static void | |
981a3fb3 | 12657 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12658 | { |
635c7e8a | 12659 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12660 | } |
12661 | ||
57810aa7 | 12662 | bool |
f6ac5f3d | 12663 | remote_target::can_execute_reverse () |
b2175913 | 12664 | { |
4082afcc PA |
12665 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12666 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12667 | return true; |
40ab02ce | 12668 | else |
57810aa7 | 12669 | return false; |
b2175913 MS |
12670 | } |
12671 | ||
57810aa7 | 12672 | bool |
f6ac5f3d | 12673 | remote_target::supports_non_stop () |
74531fed | 12674 | { |
57810aa7 | 12675 | return true; |
74531fed PA |
12676 | } |
12677 | ||
57810aa7 | 12678 | bool |
f6ac5f3d | 12679 | remote_target::supports_disable_randomization () |
03583c20 UW |
12680 | { |
12681 | /* Only supported in extended mode. */ | |
57810aa7 | 12682 | return false; |
03583c20 UW |
12683 | } |
12684 | ||
57810aa7 | 12685 | bool |
f6ac5f3d | 12686 | remote_target::supports_multi_process () |
8a305172 PA |
12687 | { |
12688 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12689 | |
8020350c | 12690 | return remote_multi_process_p (rs); |
8a305172 PA |
12691 | } |
12692 | ||
70221824 | 12693 | static int |
f6ac5f3d | 12694 | remote_supports_cond_tracepoints () |
782b2b07 | 12695 | { |
4082afcc | 12696 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12697 | } |
12698 | ||
57810aa7 | 12699 | bool |
f6ac5f3d | 12700 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12701 | { |
4082afcc | 12702 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12703 | } |
12704 | ||
70221824 | 12705 | static int |
f6ac5f3d | 12706 | remote_supports_fast_tracepoints () |
7a697b8d | 12707 | { |
4082afcc | 12708 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12709 | } |
12710 | ||
0fb4aa4b | 12711 | static int |
f6ac5f3d | 12712 | remote_supports_static_tracepoints () |
0fb4aa4b | 12713 | { |
4082afcc | 12714 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12715 | } |
12716 | ||
1e4d1764 | 12717 | static int |
f6ac5f3d | 12718 | remote_supports_install_in_trace () |
1e4d1764 | 12719 | { |
4082afcc | 12720 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12721 | } |
12722 | ||
57810aa7 | 12723 | bool |
f6ac5f3d | 12724 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12725 | { |
4082afcc PA |
12726 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12727 | == PACKET_ENABLE); | |
d248b706 KY |
12728 | } |
12729 | ||
57810aa7 | 12730 | bool |
f6ac5f3d | 12731 | remote_target::supports_string_tracing () |
3065dfb6 | 12732 | { |
4082afcc | 12733 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12734 | } |
12735 | ||
57810aa7 | 12736 | bool |
f6ac5f3d | 12737 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12738 | { |
4082afcc | 12739 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12740 | } |
12741 | ||
f6ac5f3d PA |
12742 | void |
12743 | remote_target::trace_init () | |
35b1e5cc | 12744 | { |
b6bb3468 PA |
12745 | struct remote_state *rs = get_remote_state (); |
12746 | ||
35b1e5cc | 12747 | putpkt ("QTinit"); |
b6bb3468 PA |
12748 | remote_get_noisy_reply (); |
12749 | if (strcmp (rs->buf, "OK") != 0) | |
35b1e5cc SS |
12750 | error (_("Target does not support this command.")); |
12751 | } | |
12752 | ||
409873ef SS |
12753 | /* Recursive routine to walk through command list including loops, and |
12754 | download packets for each command. */ | |
12755 | ||
6b8edb51 PA |
12756 | void |
12757 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
12758 | struct command_line *cmds) | |
409873ef SS |
12759 | { |
12760 | struct remote_state *rs = get_remote_state (); | |
12761 | struct command_line *cmd; | |
12762 | ||
12763 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12764 | { | |
0df8b418 | 12765 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12766 | strcpy (rs->buf, "QTDPsrc:"); |
12767 | encode_source_string (num, addr, "cmd", cmd->line, | |
12768 | rs->buf + strlen (rs->buf), | |
12769 | rs->buf_size - strlen (rs->buf)); | |
12770 | putpkt (rs->buf); | |
b6bb3468 PA |
12771 | remote_get_noisy_reply (); |
12772 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12773 | warning (_("Target does not support source download.")); |
12774 | ||
12775 | if (cmd->control_type == while_control | |
12776 | || cmd->control_type == while_stepping_control) | |
12777 | { | |
12973681 | 12778 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12779 | |
0df8b418 | 12780 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12781 | strcpy (rs->buf, "QTDPsrc:"); |
12782 | encode_source_string (num, addr, "cmd", "end", | |
12783 | rs->buf + strlen (rs->buf), | |
12784 | rs->buf_size - strlen (rs->buf)); | |
12785 | putpkt (rs->buf); | |
b6bb3468 PA |
12786 | remote_get_noisy_reply (); |
12787 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12788 | warning (_("Target does not support source download.")); |
12789 | } | |
12790 | } | |
12791 | } | |
12792 | ||
f6ac5f3d PA |
12793 | void |
12794 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc | 12795 | { |
bba74b36 | 12796 | #define BUF_SIZE 2048 |
e8ba3115 | 12797 | |
35b1e5cc | 12798 | CORE_ADDR tpaddr; |
409873ef | 12799 | char addrbuf[40]; |
bba74b36 | 12800 | char buf[BUF_SIZE]; |
b44ec619 SM |
12801 | std::vector<std::string> tdp_actions; |
12802 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12803 | char *pkt; |
e8ba3115 | 12804 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12805 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12806 | struct remote_state *rs = get_remote_state (); |
35b1e5cc | 12807 | |
dc673c81 | 12808 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12809 | |
12810 | tpaddr = loc->address; | |
12811 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12812 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12813 | addrbuf, /* address */ | |
12814 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12815 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12816 | /* Fast tracepoints are mostly handled by the target, but we can |
12817 | tell the target how big of an instruction block should be moved | |
12818 | around. */ | |
12819 | if (b->type == bp_fast_tracepoint) | |
12820 | { | |
12821 | /* Only test for support at download time; we may not know | |
12822 | target capabilities at definition time. */ | |
12823 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12824 | { |
6b940e6a PL |
12825 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12826 | NULL)) | |
bba74b36 | 12827 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12828 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12829 | else |
e8ba3115 YQ |
12830 | /* If it passed validation at definition but fails now, |
12831 | something is very wrong. */ | |
12832 | internal_error (__FILE__, __LINE__, | |
12833 | _("Fast tracepoint not " | |
12834 | "valid during download")); | |
35b1e5cc | 12835 | } |
e8ba3115 YQ |
12836 | else |
12837 | /* Fast tracepoints are functionally identical to regular | |
12838 | tracepoints, so don't take lack of support as a reason to | |
12839 | give up on the trace run. */ | |
12840 | warning (_("Target does not support fast tracepoints, " | |
12841 | "downloading %d as regular tracepoint"), b->number); | |
12842 | } | |
12843 | else if (b->type == bp_static_tracepoint) | |
12844 | { | |
12845 | /* Only test for support at download time; we may not know | |
12846 | target capabilities at definition time. */ | |
12847 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12848 | { |
e8ba3115 | 12849 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12850 | |
e8ba3115 YQ |
12851 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12852 | strcat (buf, ":S"); | |
0fb4aa4b | 12853 | else |
e8ba3115 | 12854 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12855 | } |
e8ba3115 YQ |
12856 | else |
12857 | /* Fast tracepoints are functionally identical to regular | |
12858 | tracepoints, so don't take lack of support as a reason | |
12859 | to give up on the trace run. */ | |
12860 | error (_("Target does not support static tracepoints")); | |
12861 | } | |
12862 | /* If the tracepoint has a conditional, make it into an agent | |
12863 | expression and append to the definition. */ | |
12864 | if (loc->cond) | |
12865 | { | |
12866 | /* Only test support at download time, we may not know target | |
12867 | capabilities at definition time. */ | |
12868 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12869 | { |
833177a4 | 12870 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12871 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12872 | aexpr->len); | |
e8ba3115 | 12873 | pkt = buf + strlen (buf); |
b44ec619 | 12874 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12875 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12876 | *pkt = '\0'; | |
35b1e5cc | 12877 | } |
e8ba3115 YQ |
12878 | else |
12879 | warning (_("Target does not support conditional tracepoints, " | |
12880 | "ignoring tp %d cond"), b->number); | |
12881 | } | |
35b1e5cc | 12882 | |
d9b3f62e | 12883 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12884 | strcat (buf, "-"); |
12885 | putpkt (buf); | |
b6bb3468 PA |
12886 | remote_get_noisy_reply (); |
12887 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12888 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12889 | |
e8ba3115 | 12890 | /* do_single_steps (t); */ |
b44ec619 SM |
12891 | for (auto action_it = tdp_actions.begin (); |
12892 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12893 | { |
b44ec619 SM |
12894 | QUIT; /* Allow user to bail out with ^C. */ |
12895 | ||
12896 | bool has_more = (action_it != tdp_actions.end () | |
12897 | || !stepping_actions.empty ()); | |
12898 | ||
12899 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", | |
12900 | b->number, addrbuf, /* address */ | |
12901 | action_it->c_str (), | |
12902 | has_more ? '-' : 0); | |
12903 | putpkt (buf); | |
12904 | remote_get_noisy_reply (); | |
12905 | if (strcmp (rs->buf, "OK")) | |
12906 | error (_("Error on target while setting tracepoints.")); | |
e8ba3115 | 12907 | } |
409873ef | 12908 | |
b44ec619 SM |
12909 | for (auto action_it = stepping_actions.begin (); |
12910 | action_it != stepping_actions.end (); action_it++) | |
12911 | { | |
12912 | QUIT; /* Allow user to bail out with ^C. */ | |
12913 | ||
12914 | bool is_first = action_it == stepping_actions.begin (); | |
12915 | bool has_more = action_it != stepping_actions.end (); | |
12916 | ||
12917 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", | |
12918 | b->number, addrbuf, /* address */ | |
12919 | is_first ? "S" : "", | |
12920 | action_it->c_str (), | |
12921 | has_more ? "-" : ""); | |
12922 | putpkt (buf); | |
12923 | remote_get_noisy_reply (); | |
12924 | if (strcmp (rs->buf, "OK")) | |
12925 | error (_("Error on target while setting tracepoints.")); | |
12926 | } | |
12927 | ||
4082afcc | 12928 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12929 | { |
f00aae0f | 12930 | if (b->location != NULL) |
409873ef | 12931 | { |
e8ba3115 | 12932 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12933 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12934 | event_location_to_string (b->location.get ()), |
f00aae0f | 12935 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 | 12936 | putpkt (buf); |
b6bb3468 PA |
12937 | remote_get_noisy_reply (); |
12938 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12939 | warning (_("Target does not support source download.")); |
409873ef | 12940 | } |
e8ba3115 YQ |
12941 | if (b->cond_string) |
12942 | { | |
12943 | strcpy (buf, "QTDPsrc:"); | |
12944 | encode_source_string (b->number, loc->address, | |
12945 | "cond", b->cond_string, buf + strlen (buf), | |
12946 | 2048 - strlen (buf)); | |
12947 | putpkt (buf); | |
b6bb3468 PA |
12948 | remote_get_noisy_reply (); |
12949 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 YQ |
12950 | warning (_("Target does not support source download.")); |
12951 | } | |
12952 | remote_download_command_source (b->number, loc->address, | |
12953 | breakpoint_commands (b)); | |
35b1e5cc | 12954 | } |
35b1e5cc SS |
12955 | } |
12956 | ||
57810aa7 | 12957 | bool |
f6ac5f3d | 12958 | remote_target::can_download_tracepoint () |
1e4d1764 | 12959 | { |
1e51243a PA |
12960 | struct remote_state *rs = get_remote_state (); |
12961 | struct trace_status *ts; | |
12962 | int status; | |
12963 | ||
12964 | /* Don't try to install tracepoints until we've relocated our | |
12965 | symbols, and fetched and merged the target's tracepoint list with | |
12966 | ours. */ | |
12967 | if (rs->starting_up) | |
57810aa7 | 12968 | return false; |
1e51243a PA |
12969 | |
12970 | ts = current_trace_status (); | |
f6ac5f3d | 12971 | status = get_trace_status (ts); |
1e4d1764 YQ |
12972 | |
12973 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 12974 | return false; |
1e4d1764 YQ |
12975 | |
12976 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12977 | installing tracepoint in trace, we have to return. */ | |
12978 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 12979 | return false; |
1e4d1764 | 12980 | |
57810aa7 | 12981 | return true; |
1e4d1764 YQ |
12982 | } |
12983 | ||
12984 | ||
f6ac5f3d PA |
12985 | void |
12986 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
12987 | { |
12988 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12989 | char *p; |
35b1e5cc | 12990 | |
bba74b36 | 12991 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
12992 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
12993 | tsv.builtin); | |
00bf0b85 | 12994 | p = rs->buf + strlen (rs->buf); |
c252925c | 12995 | if ((p - rs->buf) + tsv.name.length () * 2 >= get_remote_packet_size ()) |
00bf0b85 | 12996 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 12997 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 12998 | *p++ = '\0'; |
35b1e5cc | 12999 | putpkt (rs->buf); |
b6bb3468 PA |
13000 | remote_get_noisy_reply (); |
13001 | if (*rs->buf == '\0') | |
ad91cd99 | 13002 | error (_("Target does not support this command.")); |
b6bb3468 | 13003 | if (strcmp (rs->buf, "OK") != 0) |
ad91cd99 | 13004 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13005 | } |
13006 | ||
f6ac5f3d PA |
13007 | void |
13008 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13009 | { |
13010 | struct remote_state *rs = get_remote_state (); | |
13011 | char addr_buf[40]; | |
13012 | ||
13013 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
13014 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
13015 | location->owner->number, addr_buf); | |
d248b706 | 13016 | putpkt (rs->buf); |
b6bb3468 | 13017 | remote_get_noisy_reply (); |
d248b706 KY |
13018 | if (*rs->buf == '\0') |
13019 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
13020 | if (strcmp (rs->buf, "OK") != 0) | |
13021 | error (_("Error on target while enabling tracepoint.")); | |
13022 | } | |
13023 | ||
f6ac5f3d PA |
13024 | void |
13025 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13026 | { |
13027 | struct remote_state *rs = get_remote_state (); | |
13028 | char addr_buf[40]; | |
13029 | ||
13030 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
13031 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
13032 | location->owner->number, addr_buf); | |
d248b706 | 13033 | putpkt (rs->buf); |
b6bb3468 | 13034 | remote_get_noisy_reply (); |
d248b706 KY |
13035 | if (*rs->buf == '\0') |
13036 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
13037 | if (strcmp (rs->buf, "OK") != 0) | |
13038 | error (_("Error on target while disabling tracepoint.")); | |
13039 | } | |
13040 | ||
f6ac5f3d PA |
13041 | void |
13042 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13043 | { |
13044 | asection *s; | |
81b9b86e | 13045 | bfd *abfd = NULL; |
35b1e5cc | 13046 | bfd_size_type size; |
608bcef2 | 13047 | bfd_vma vma; |
35b1e5cc | 13048 | int anysecs = 0; |
c2fa21f1 | 13049 | int offset = 0; |
35b1e5cc SS |
13050 | |
13051 | if (!exec_bfd) | |
13052 | return; /* No information to give. */ | |
13053 | ||
b6bb3468 PA |
13054 | struct remote_state *rs = get_remote_state (); |
13055 | ||
13056 | strcpy (rs->buf, "QTro"); | |
13057 | offset = strlen (rs->buf); | |
35b1e5cc SS |
13058 | for (s = exec_bfd->sections; s; s = s->next) |
13059 | { | |
13060 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13061 | int sec_length; |
35b1e5cc SS |
13062 | |
13063 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13064 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13065 | (s->flags & SEC_READONLY) == 0) |
13066 | continue; | |
13067 | ||
13068 | anysecs = 1; | |
81b9b86e | 13069 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 13070 | size = bfd_get_section_size (s); |
608bcef2 HZ |
13071 | sprintf_vma (tmp1, vma); |
13072 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13073 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
b6bb3468 | 13074 | if (offset + sec_length + 1 > rs->buf_size) |
c2fa21f1 | 13075 | { |
4082afcc | 13076 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13077 | warning (_("\ |
c2fa21f1 HZ |
13078 | Too many sections for read-only sections definition packet.")); |
13079 | break; | |
13080 | } | |
b6bb3468 | 13081 | xsnprintf (rs->buf + offset, rs->buf_size - offset, ":%s,%s", |
bba74b36 | 13082 | tmp1, tmp2); |
c2fa21f1 | 13083 | offset += sec_length; |
35b1e5cc SS |
13084 | } |
13085 | if (anysecs) | |
13086 | { | |
b6bb3468 PA |
13087 | putpkt (rs->buf); |
13088 | getpkt (&rs->buf, &rs->buf_size, 0); | |
35b1e5cc SS |
13089 | } |
13090 | } | |
13091 | ||
f6ac5f3d PA |
13092 | void |
13093 | remote_target::trace_start () | |
35b1e5cc | 13094 | { |
b6bb3468 PA |
13095 | struct remote_state *rs = get_remote_state (); |
13096 | ||
35b1e5cc | 13097 | putpkt ("QTStart"); |
b6bb3468 PA |
13098 | remote_get_noisy_reply (); |
13099 | if (*rs->buf == '\0') | |
ad91cd99 | 13100 | error (_("Target does not support this command.")); |
b6bb3468 PA |
13101 | if (strcmp (rs->buf, "OK") != 0) |
13102 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
13103 | } |
13104 | ||
f6ac5f3d PA |
13105 | int |
13106 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13107 | { |
953b98d1 | 13108 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13109 | char *p = NULL; |
0df8b418 | 13110 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 13111 | extern int trace_regblock_size; |
bd3eecc3 | 13112 | enum packet_result result; |
b6bb3468 | 13113 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13114 | |
4082afcc | 13115 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13116 | return -1; |
a744cf53 | 13117 | |
5cd63fda | 13118 | trace_regblock_size |
9d6eea31 | 13119 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13120 | |
049dc89b JK |
13121 | putpkt ("qTStatus"); |
13122 | ||
492d29ea | 13123 | TRY |
67f41397 | 13124 | { |
b6bb3468 | 13125 | p = remote_get_noisy_reply (); |
67f41397 | 13126 | } |
492d29ea | 13127 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 13128 | { |
598d3636 JK |
13129 | if (ex.error != TARGET_CLOSE_ERROR) |
13130 | { | |
13131 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13132 | return -1; | |
13133 | } | |
13134 | throw_exception (ex); | |
67f41397 | 13135 | } |
492d29ea | 13136 | END_CATCH |
00bf0b85 | 13137 | |
bd3eecc3 PA |
13138 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13139 | ||
00bf0b85 | 13140 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13141 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13142 | return -1; |
35b1e5cc | 13143 | |
00bf0b85 | 13144 | /* We're working with a live target. */ |
f5911ea1 | 13145 | ts->filename = NULL; |
00bf0b85 | 13146 | |
00bf0b85 | 13147 | if (*p++ != 'T') |
b6bb3468 | 13148 | error (_("Bogus trace status reply from target: %s"), rs->buf); |
35b1e5cc | 13149 | |
84cebc4a YQ |
13150 | /* Function 'parse_trace_status' sets default value of each field of |
13151 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13152 | parse_trace_status (p, ts); |
13153 | ||
13154 | return ts->running; | |
35b1e5cc SS |
13155 | } |
13156 | ||
f6ac5f3d PA |
13157 | void |
13158 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13159 | struct uploaded_tp *utp) | |
f196051f SS |
13160 | { |
13161 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13162 | char *reply; |
13163 | struct bp_location *loc; | |
13164 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13165 | size_t size = get_remote_packet_size (); |
f196051f SS |
13166 | |
13167 | if (tp) | |
13168 | { | |
c1fc2657 | 13169 | tp->hit_count = 0; |
f196051f | 13170 | tp->traceframe_usage = 0; |
c1fc2657 | 13171 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13172 | { |
13173 | /* If the tracepoint was never downloaded, don't go asking for | |
13174 | any status. */ | |
13175 | if (tp->number_on_target == 0) | |
13176 | continue; | |
bba74b36 YQ |
13177 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
13178 | phex_nz (loc->address, 0)); | |
f196051f | 13179 | putpkt (rs->buf); |
b6bb3468 | 13180 | reply = remote_get_noisy_reply (); |
f196051f SS |
13181 | if (reply && *reply) |
13182 | { | |
13183 | if (*reply == 'V') | |
13184 | parse_tracepoint_status (reply + 1, bp, utp); | |
13185 | } | |
13186 | } | |
13187 | } | |
13188 | else if (utp) | |
13189 | { | |
13190 | utp->hit_count = 0; | |
13191 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
13192 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
13193 | phex_nz (utp->addr, 0)); | |
f196051f | 13194 | putpkt (rs->buf); |
b6bb3468 | 13195 | reply = remote_get_noisy_reply (); |
f196051f SS |
13196 | if (reply && *reply) |
13197 | { | |
13198 | if (*reply == 'V') | |
13199 | parse_tracepoint_status (reply + 1, bp, utp); | |
13200 | } | |
13201 | } | |
13202 | } | |
13203 | ||
f6ac5f3d PA |
13204 | void |
13205 | remote_target::trace_stop () | |
35b1e5cc | 13206 | { |
b6bb3468 PA |
13207 | struct remote_state *rs = get_remote_state (); |
13208 | ||
35b1e5cc | 13209 | putpkt ("QTStop"); |
b6bb3468 PA |
13210 | remote_get_noisy_reply (); |
13211 | if (*rs->buf == '\0') | |
ad91cd99 | 13212 | error (_("Target does not support this command.")); |
b6bb3468 PA |
13213 | if (strcmp (rs->buf, "OK") != 0) |
13214 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
13215 | } |
13216 | ||
f6ac5f3d PA |
13217 | int |
13218 | remote_target::trace_find (enum trace_find_type type, int num, | |
13219 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13220 | int *tpp) | |
35b1e5cc SS |
13221 | { |
13222 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 13223 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
13224 | char *p, *reply; |
13225 | int target_frameno = -1, target_tracept = -1; | |
13226 | ||
e6e4e701 PA |
13227 | /* Lookups other than by absolute frame number depend on the current |
13228 | trace selected, so make sure it is correct on the remote end | |
13229 | first. */ | |
13230 | if (type != tfind_number) | |
13231 | set_remote_traceframe (); | |
13232 | ||
35b1e5cc SS |
13233 | p = rs->buf; |
13234 | strcpy (p, "QTFrame:"); | |
13235 | p = strchr (p, '\0'); | |
13236 | switch (type) | |
13237 | { | |
13238 | case tfind_number: | |
bba74b36 | 13239 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13240 | break; |
13241 | case tfind_pc: | |
bba74b36 | 13242 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13243 | break; |
13244 | case tfind_tp: | |
bba74b36 | 13245 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13246 | break; |
13247 | case tfind_range: | |
bba74b36 YQ |
13248 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13249 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13250 | break; |
13251 | case tfind_outside: | |
bba74b36 YQ |
13252 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13253 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13254 | break; |
13255 | default: | |
9b20d036 | 13256 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13257 | } |
13258 | ||
13259 | putpkt (rs->buf); | |
b6bb3468 | 13260 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13261 | if (*reply == '\0') |
13262 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13263 | |
13264 | while (reply && *reply) | |
13265 | switch (*reply) | |
13266 | { | |
13267 | case 'F': | |
f197e0f1 VP |
13268 | p = ++reply; |
13269 | target_frameno = (int) strtol (p, &reply, 16); | |
13270 | if (reply == p) | |
13271 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13272 | /* Don't update our remote traceframe number cache on failure |
13273 | to select a remote traceframe. */ | |
f197e0f1 VP |
13274 | if (target_frameno == -1) |
13275 | return -1; | |
35b1e5cc SS |
13276 | break; |
13277 | case 'T': | |
f197e0f1 VP |
13278 | p = ++reply; |
13279 | target_tracept = (int) strtol (p, &reply, 16); | |
13280 | if (reply == p) | |
13281 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13282 | break; |
13283 | case 'O': /* "OK"? */ | |
13284 | if (reply[1] == 'K' && reply[2] == '\0') | |
13285 | reply += 2; | |
13286 | else | |
13287 | error (_("Bogus reply from target: %s"), reply); | |
13288 | break; | |
13289 | default: | |
13290 | error (_("Bogus reply from target: %s"), reply); | |
13291 | } | |
13292 | if (tpp) | |
13293 | *tpp = target_tracept; | |
e6e4e701 | 13294 | |
262e1174 | 13295 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13296 | return target_frameno; |
13297 | } | |
13298 | ||
57810aa7 | 13299 | bool |
f6ac5f3d | 13300 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13301 | { |
13302 | struct remote_state *rs = get_remote_state (); | |
13303 | char *reply; | |
13304 | ULONGEST uval; | |
13305 | ||
e6e4e701 PA |
13306 | set_remote_traceframe (); |
13307 | ||
bba74b36 | 13308 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13309 | putpkt (rs->buf); |
b6bb3468 | 13310 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13311 | if (reply && *reply) |
13312 | { | |
13313 | if (*reply == 'V') | |
13314 | { | |
13315 | unpack_varlen_hex (reply + 1, &uval); | |
13316 | *val = (LONGEST) uval; | |
57810aa7 | 13317 | return true; |
35b1e5cc SS |
13318 | } |
13319 | } | |
57810aa7 | 13320 | return false; |
35b1e5cc SS |
13321 | } |
13322 | ||
f6ac5f3d PA |
13323 | int |
13324 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13325 | { |
13326 | struct remote_state *rs = get_remote_state (); | |
13327 | char *p, *reply; | |
13328 | ||
13329 | p = rs->buf; | |
13330 | strcpy (p, "QTSave:"); | |
13331 | p += strlen (p); | |
13332 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
13333 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 13334 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13335 | *p++ = '\0'; |
13336 | putpkt (rs->buf); | |
b6bb3468 | 13337 | reply = remote_get_noisy_reply (); |
d6c5869f | 13338 | if (*reply == '\0') |
ad91cd99 PA |
13339 | error (_("Target does not support this command.")); |
13340 | if (strcmp (reply, "OK") != 0) | |
13341 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13342 | return 0; |
13343 | } | |
13344 | ||
13345 | /* This is basically a memory transfer, but needs to be its own packet | |
13346 | because we don't know how the target actually organizes its trace | |
13347 | memory, plus we want to be able to ask for as much as possible, but | |
13348 | not be unhappy if we don't get as much as we ask for. */ | |
13349 | ||
f6ac5f3d PA |
13350 | LONGEST |
13351 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13352 | { |
13353 | struct remote_state *rs = get_remote_state (); | |
13354 | char *reply; | |
13355 | char *p; | |
13356 | int rslt; | |
13357 | ||
13358 | p = rs->buf; | |
13359 | strcpy (p, "qTBuffer:"); | |
13360 | p += strlen (p); | |
13361 | p += hexnumstr (p, offset); | |
13362 | *p++ = ','; | |
13363 | p += hexnumstr (p, len); | |
13364 | *p++ = '\0'; | |
13365 | ||
13366 | putpkt (rs->buf); | |
b6bb3468 | 13367 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13368 | if (reply && *reply) |
13369 | { | |
13370 | /* 'l' by itself means we're at the end of the buffer and | |
13371 | there is nothing more to get. */ | |
13372 | if (*reply == 'l') | |
13373 | return 0; | |
13374 | ||
13375 | /* Convert the reply into binary. Limit the number of bytes to | |
13376 | convert according to our passed-in buffer size, rather than | |
13377 | what was returned in the packet; if the target is | |
13378 | unexpectedly generous and gives us a bigger reply than we | |
13379 | asked for, we don't want to crash. */ | |
b6bb3468 | 13380 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13381 | return rslt; |
13382 | } | |
13383 | ||
13384 | /* Something went wrong, flag as an error. */ | |
13385 | return -1; | |
13386 | } | |
13387 | ||
f6ac5f3d PA |
13388 | void |
13389 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13390 | { |
13391 | struct remote_state *rs = get_remote_state (); | |
13392 | ||
4082afcc | 13393 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13394 | { |
ad91cd99 PA |
13395 | char *reply; |
13396 | ||
bba74b36 | 13397 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 13398 | putpkt (rs->buf); |
b6bb3468 | 13399 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13400 | if (*reply == '\0') |
33da3f1c | 13401 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13402 | if (strcmp (reply, "OK") != 0) |
13403 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13404 | } |
13405 | else if (val) | |
13406 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13407 | } |
13408 | ||
f6ac5f3d PA |
13409 | int |
13410 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c VP |
13411 | { |
13412 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 13413 | |
7aabaf9d SM |
13414 | if (info != NULL && info->priv != NULL) |
13415 | return get_remote_thread_info (info)->core; | |
13416 | ||
dc146f7c VP |
13417 | return -1; |
13418 | } | |
13419 | ||
f6ac5f3d PA |
13420 | void |
13421 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13422 | { |
13423 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13424 | char *reply; |
4daf5ac0 | 13425 | |
bba74b36 | 13426 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 13427 | putpkt (rs->buf); |
b6bb3468 | 13428 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13429 | if (*reply == '\0') |
4daf5ac0 | 13430 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13431 | if (strcmp (reply, "OK") != 0) |
13432 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13433 | } |
13434 | ||
f6ac5f3d PA |
13435 | traceframe_info_up |
13436 | remote_target::traceframe_info () | |
b3b9301e | 13437 | { |
9018be22 | 13438 | gdb::optional<gdb::char_vector> text |
8b88a78e | 13439 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13440 | NULL); |
9018be22 SM |
13441 | if (text) |
13442 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13443 | |
13444 | return NULL; | |
13445 | } | |
13446 | ||
405f8e94 SS |
13447 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13448 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13449 | if the packet is not supported, and 0 if the minimum instruction | |
13450 | length is unknown. */ | |
13451 | ||
f6ac5f3d PA |
13452 | int |
13453 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13454 | { |
13455 | struct remote_state *rs = get_remote_state (); | |
13456 | char *reply; | |
13457 | ||
e886a173 PA |
13458 | /* If we're not debugging a process yet, the IPA can't be |
13459 | loaded. */ | |
13460 | if (!target_has_execution) | |
13461 | return 0; | |
13462 | ||
13463 | /* Make sure the remote is pointing at the right process. */ | |
13464 | set_general_process (); | |
13465 | ||
bba74b36 | 13466 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13467 | putpkt (rs->buf); |
b6bb3468 | 13468 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13469 | if (*reply == '\0') |
13470 | return -1; | |
13471 | else | |
13472 | { | |
13473 | ULONGEST min_insn_len; | |
13474 | ||
13475 | unpack_varlen_hex (reply, &min_insn_len); | |
13476 | ||
13477 | return (int) min_insn_len; | |
13478 | } | |
13479 | } | |
13480 | ||
f6ac5f3d PA |
13481 | void |
13482 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13483 | { |
4082afcc | 13484 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13485 | { |
13486 | struct remote_state *rs = get_remote_state (); | |
13487 | char *buf = rs->buf; | |
13488 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13489 | enum packet_result result; | |
13490 | ||
13491 | gdb_assert (val >= 0 || val == -1); | |
13492 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13493 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13494 | if (val < 0) | |
13495 | { | |
13496 | *buf++ = '-'; | |
13497 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13498 | } | |
13499 | else | |
13500 | buf += hexnumstr (buf, (ULONGEST) val); | |
13501 | ||
13502 | putpkt (rs->buf); | |
b6bb3468 | 13503 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13504 | result = packet_ok (rs->buf, |
13505 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13506 | ||
13507 | if (result != PACKET_OK) | |
13508 | warning (_("Bogus reply from target: %s"), rs->buf); | |
13509 | } | |
13510 | } | |
13511 | ||
57810aa7 | 13512 | bool |
f6ac5f3d PA |
13513 | remote_target::set_trace_notes (const char *user, const char *notes, |
13514 | const char *stop_notes) | |
f196051f SS |
13515 | { |
13516 | struct remote_state *rs = get_remote_state (); | |
13517 | char *reply; | |
13518 | char *buf = rs->buf; | |
13519 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13520 | int nbytes; | |
13521 | ||
13522 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13523 | if (user) | |
13524 | { | |
13525 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13526 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13527 | buf += 2 * nbytes; |
13528 | *buf++ = ';'; | |
13529 | } | |
13530 | if (notes) | |
13531 | { | |
13532 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13533 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13534 | buf += 2 * nbytes; |
13535 | *buf++ = ';'; | |
13536 | } | |
13537 | if (stop_notes) | |
13538 | { | |
13539 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13540 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13541 | buf += 2 * nbytes; |
13542 | *buf++ = ';'; | |
13543 | } | |
13544 | /* Ensure the buffer is terminated. */ | |
13545 | *buf = '\0'; | |
13546 | ||
13547 | putpkt (rs->buf); | |
b6bb3468 | 13548 | reply = remote_get_noisy_reply (); |
f196051f | 13549 | if (*reply == '\0') |
57810aa7 | 13550 | return false; |
f196051f SS |
13551 | |
13552 | if (strcmp (reply, "OK") != 0) | |
13553 | error (_("Bogus reply from target: %s"), reply); | |
13554 | ||
57810aa7 | 13555 | return true; |
f196051f SS |
13556 | } |
13557 | ||
57810aa7 PA |
13558 | bool |
13559 | remote_target::use_agent (bool use) | |
d1feda86 | 13560 | { |
4082afcc | 13561 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13562 | { |
13563 | struct remote_state *rs = get_remote_state (); | |
13564 | ||
13565 | /* If the stub supports QAgent. */ | |
bba74b36 | 13566 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13567 | putpkt (rs->buf); |
13568 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13569 | ||
13570 | if (strcmp (rs->buf, "OK") == 0) | |
13571 | { | |
f6ac5f3d | 13572 | ::use_agent = use; |
57810aa7 | 13573 | return true; |
d1feda86 YQ |
13574 | } |
13575 | } | |
13576 | ||
57810aa7 | 13577 | return false; |
d1feda86 YQ |
13578 | } |
13579 | ||
57810aa7 | 13580 | bool |
f6ac5f3d | 13581 | remote_target::can_use_agent () |
d1feda86 | 13582 | { |
4082afcc | 13583 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13584 | } |
13585 | ||
9accd112 MM |
13586 | struct btrace_target_info |
13587 | { | |
13588 | /* The ptid of the traced thread. */ | |
13589 | ptid_t ptid; | |
f4abbc16 MM |
13590 | |
13591 | /* The obtained branch trace configuration. */ | |
13592 | struct btrace_config conf; | |
9accd112 MM |
13593 | }; |
13594 | ||
f4abbc16 MM |
13595 | /* Reset our idea of our target's btrace configuration. */ |
13596 | ||
13597 | static void | |
6b8edb51 | 13598 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13599 | { |
f4abbc16 MM |
13600 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13601 | } | |
13602 | ||
f4abbc16 MM |
13603 | /* Synchronize the configuration with the target. */ |
13604 | ||
6b8edb51 PA |
13605 | void |
13606 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13607 | { |
d33501a5 MM |
13608 | struct packet_config *packet; |
13609 | struct remote_state *rs; | |
13610 | char *buf, *pos, *endbuf; | |
13611 | ||
13612 | rs = get_remote_state (); | |
13613 | buf = rs->buf; | |
13614 | endbuf = buf + get_remote_packet_size (); | |
13615 | ||
13616 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13617 | if (packet_config_support (packet) == PACKET_ENABLE | |
13618 | && conf->bts.size != rs->btrace_config.bts.size) | |
13619 | { | |
13620 | pos = buf; | |
13621 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13622 | conf->bts.size); | |
13623 | ||
13624 | putpkt (buf); | |
13625 | getpkt (&buf, &rs->buf_size, 0); | |
13626 | ||
13627 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13628 | { | |
13629 | if (buf[0] == 'E' && buf[1] == '.') | |
13630 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13631 | else | |
13632 | error (_("Failed to configure the BTS buffer size.")); | |
13633 | } | |
13634 | ||
13635 | rs->btrace_config.bts.size = conf->bts.size; | |
13636 | } | |
b20a6524 MM |
13637 | |
13638 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13639 | if (packet_config_support (packet) == PACKET_ENABLE | |
13640 | && conf->pt.size != rs->btrace_config.pt.size) | |
13641 | { | |
13642 | pos = buf; | |
13643 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13644 | conf->pt.size); | |
13645 | ||
13646 | putpkt (buf); | |
13647 | getpkt (&buf, &rs->buf_size, 0); | |
13648 | ||
13649 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13650 | { | |
13651 | if (buf[0] == 'E' && buf[1] == '.') | |
13652 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13653 | else | |
13654 | error (_("Failed to configure the trace buffer size.")); | |
13655 | } | |
13656 | ||
13657 | rs->btrace_config.pt.size = conf->pt.size; | |
13658 | } | |
f4abbc16 MM |
13659 | } |
13660 | ||
13661 | /* Read the current thread's btrace configuration from the target and | |
13662 | store it into CONF. */ | |
13663 | ||
13664 | static void | |
13665 | btrace_read_config (struct btrace_config *conf) | |
13666 | { | |
9018be22 | 13667 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13668 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13669 | if (xml) |
13670 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13671 | } |
13672 | ||
c0272db5 TW |
13673 | /* Maybe reopen target btrace. */ |
13674 | ||
6b8edb51 PA |
13675 | void |
13676 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
13677 | { |
13678 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13679 | struct thread_info *tp; |
13680 | int btrace_target_pushed = 0; | |
13681 | int warned = 0; | |
13682 | ||
5ed8105e PA |
13683 | scoped_restore_current_thread restore_thread; |
13684 | ||
c0272db5 TW |
13685 | ALL_NON_EXITED_THREADS (tp) |
13686 | { | |
13687 | set_general_thread (tp->ptid); | |
13688 | ||
13689 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13690 | btrace_read_config (&rs->btrace_config); | |
13691 | ||
13692 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13693 | continue; | |
13694 | ||
13695 | #if !defined (HAVE_LIBIPT) | |
13696 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13697 | { | |
13698 | if (!warned) | |
13699 | { | |
13700 | warned = 1; | |
c4e12631 MM |
13701 | warning (_("Target is recording using Intel Processor Trace " |
13702 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13703 | } |
13704 | ||
13705 | continue; | |
13706 | } | |
13707 | #endif /* !defined (HAVE_LIBIPT) */ | |
13708 | ||
13709 | /* Push target, once, but before anything else happens. This way our | |
13710 | changes to the threads will be cleaned up by unpushing the target | |
13711 | in case btrace_read_config () throws. */ | |
13712 | if (!btrace_target_pushed) | |
13713 | { | |
13714 | btrace_target_pushed = 1; | |
13715 | record_btrace_push_target (); | |
13716 | printf_filtered (_("Target is recording using %s.\n"), | |
13717 | btrace_format_string (rs->btrace_config.format)); | |
13718 | } | |
13719 | ||
13720 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13721 | tp->btrace.target->ptid = tp->ptid; | |
13722 | tp->btrace.target->conf = rs->btrace_config; | |
13723 | } | |
c0272db5 TW |
13724 | } |
13725 | ||
9accd112 MM |
13726 | /* Enable branch tracing. */ |
13727 | ||
f6ac5f3d PA |
13728 | struct btrace_target_info * |
13729 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13730 | { |
13731 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13732 | struct packet_config *packet = NULL; |
9accd112 MM |
13733 | struct remote_state *rs = get_remote_state (); |
13734 | char *buf = rs->buf; | |
13735 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13736 | ||
b20a6524 MM |
13737 | switch (conf->format) |
13738 | { | |
13739 | case BTRACE_FORMAT_BTS: | |
13740 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13741 | break; | |
13742 | ||
13743 | case BTRACE_FORMAT_PT: | |
13744 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13745 | break; | |
13746 | } | |
13747 | ||
13748 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13749 | error (_("Target does not support branch tracing.")); |
13750 | ||
f4abbc16 MM |
13751 | btrace_sync_conf (conf); |
13752 | ||
9accd112 MM |
13753 | set_general_thread (ptid); |
13754 | ||
13755 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13756 | putpkt (rs->buf); | |
13757 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13758 | ||
13759 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13760 | { | |
13761 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13762 | error (_("Could not enable branch tracing for %s: %s"), | |
13763 | target_pid_to_str (ptid), rs->buf + 2); | |
13764 | else | |
13765 | error (_("Could not enable branch tracing for %s."), | |
13766 | target_pid_to_str (ptid)); | |
13767 | } | |
13768 | ||
8d749320 | 13769 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13770 | tinfo->ptid = ptid; |
13771 | ||
f4abbc16 MM |
13772 | /* If we fail to read the configuration, we lose some information, but the |
13773 | tracing itself is not impacted. */ | |
492d29ea PA |
13774 | TRY |
13775 | { | |
13776 | btrace_read_config (&tinfo->conf); | |
13777 | } | |
13778 | CATCH (err, RETURN_MASK_ERROR) | |
13779 | { | |
13780 | if (err.message != NULL) | |
13781 | warning ("%s", err.message); | |
13782 | } | |
13783 | END_CATCH | |
f4abbc16 | 13784 | |
9accd112 MM |
13785 | return tinfo; |
13786 | } | |
13787 | ||
13788 | /* Disable branch tracing. */ | |
13789 | ||
f6ac5f3d PA |
13790 | void |
13791 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13792 | { |
13793 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13794 | struct remote_state *rs = get_remote_state (); | |
13795 | char *buf = rs->buf; | |
13796 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13797 | ||
4082afcc | 13798 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13799 | error (_("Target does not support branch tracing.")); |
13800 | ||
13801 | set_general_thread (tinfo->ptid); | |
13802 | ||
13803 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13804 | putpkt (rs->buf); | |
13805 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13806 | ||
13807 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13808 | { | |
13809 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13810 | error (_("Could not disable branch tracing for %s: %s"), | |
13811 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13812 | else | |
13813 | error (_("Could not disable branch tracing for %s."), | |
13814 | target_pid_to_str (tinfo->ptid)); | |
13815 | } | |
13816 | ||
13817 | xfree (tinfo); | |
13818 | } | |
13819 | ||
13820 | /* Teardown branch tracing. */ | |
13821 | ||
f6ac5f3d PA |
13822 | void |
13823 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13824 | { |
13825 | /* We must not talk to the target during teardown. */ | |
13826 | xfree (tinfo); | |
13827 | } | |
13828 | ||
13829 | /* Read the branch trace. */ | |
13830 | ||
f6ac5f3d PA |
13831 | enum btrace_error |
13832 | remote_target::read_btrace (struct btrace_data *btrace, | |
13833 | struct btrace_target_info *tinfo, | |
13834 | enum btrace_read_type type) | |
9accd112 MM |
13835 | { |
13836 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13837 | const char *annex; |
9accd112 | 13838 | |
4082afcc | 13839 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13840 | error (_("Target does not support branch tracing.")); |
13841 | ||
13842 | #if !defined(HAVE_LIBEXPAT) | |
13843 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13844 | #endif | |
13845 | ||
13846 | switch (type) | |
13847 | { | |
864089d2 | 13848 | case BTRACE_READ_ALL: |
9accd112 MM |
13849 | annex = "all"; |
13850 | break; | |
864089d2 | 13851 | case BTRACE_READ_NEW: |
9accd112 MM |
13852 | annex = "new"; |
13853 | break; | |
969c39fb MM |
13854 | case BTRACE_READ_DELTA: |
13855 | annex = "delta"; | |
13856 | break; | |
9accd112 MM |
13857 | default: |
13858 | internal_error (__FILE__, __LINE__, | |
13859 | _("Bad branch tracing read type: %u."), | |
13860 | (unsigned int) type); | |
13861 | } | |
13862 | ||
9018be22 | 13863 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13864 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13865 | if (!xml) |
969c39fb | 13866 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13867 | |
9018be22 | 13868 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13869 | |
969c39fb | 13870 | return BTRACE_ERR_NONE; |
9accd112 MM |
13871 | } |
13872 | ||
f6ac5f3d PA |
13873 | const struct btrace_config * |
13874 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
13875 | { |
13876 | return &tinfo->conf; | |
13877 | } | |
13878 | ||
57810aa7 | 13879 | bool |
f6ac5f3d | 13880 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 13881 | { |
4082afcc PA |
13882 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13883 | == PACKET_ENABLE); | |
ced63ec0 GB |
13884 | } |
13885 | ||
9dd130a0 TT |
13886 | /* Implementation of to_load. */ |
13887 | ||
f6ac5f3d PA |
13888 | void |
13889 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
13890 | { |
13891 | generic_load (name, from_tty); | |
13892 | } | |
13893 | ||
c78fa86a GB |
13894 | /* Accepts an integer PID; returns a string representing a file that |
13895 | can be opened on the remote side to get the symbols for the child | |
13896 | process. Returns NULL if the operation is not supported. */ | |
13897 | ||
f6ac5f3d PA |
13898 | char * |
13899 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 13900 | { |
9018be22 | 13901 | static gdb::optional<gdb::char_vector> filename; |
835205d0 GB |
13902 | struct inferior *inf; |
13903 | char *annex = NULL; | |
c78fa86a GB |
13904 | |
13905 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13906 | return NULL; | |
13907 | ||
835205d0 GB |
13908 | inf = find_inferior_pid (pid); |
13909 | if (inf == NULL) | |
13910 | internal_error (__FILE__, __LINE__, | |
13911 | _("not currently attached to process %d"), pid); | |
13912 | ||
13913 | if (!inf->fake_pid_p) | |
13914 | { | |
13915 | const int annex_size = 9; | |
13916 | ||
224c3ddb | 13917 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13918 | xsnprintf (annex, annex_size, "%x", pid); |
13919 | } | |
13920 | ||
8b88a78e | 13921 | filename = target_read_stralloc (current_top_target (), |
c78fa86a GB |
13922 | TARGET_OBJECT_EXEC_FILE, annex); |
13923 | ||
9018be22 | 13924 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
13925 | } |
13926 | ||
750ce8d1 YQ |
13927 | /* Implement the to_can_do_single_step target_ops method. */ |
13928 | ||
f6ac5f3d PA |
13929 | int |
13930 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
13931 | { |
13932 | /* We can only tell whether target supports single step or not by | |
13933 | supported s and S vCont actions if the stub supports vContSupported | |
13934 | feature. If the stub doesn't support vContSupported feature, | |
13935 | we have conservatively to think target doesn't supports single | |
13936 | step. */ | |
13937 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13938 | { | |
13939 | struct remote_state *rs = get_remote_state (); | |
13940 | ||
13941 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 13942 | remote_vcont_probe (); |
750ce8d1 YQ |
13943 | |
13944 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13945 | } | |
13946 | else | |
13947 | return 0; | |
13948 | } | |
13949 | ||
3a00c802 PA |
13950 | /* Implementation of the to_execution_direction method for the remote |
13951 | target. */ | |
13952 | ||
f6ac5f3d PA |
13953 | enum exec_direction_kind |
13954 | remote_target::execution_direction () | |
3a00c802 PA |
13955 | { |
13956 | struct remote_state *rs = get_remote_state (); | |
13957 | ||
13958 | return rs->last_resume_exec_dir; | |
13959 | } | |
13960 | ||
f6327dcb KB |
13961 | /* Return pointer to the thread_info struct which corresponds to |
13962 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13963 | ||
f6ac5f3d PA |
13964 | thread_info * |
13965 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
13966 | int handle_len, | |
13967 | inferior *inf) | |
f6327dcb KB |
13968 | { |
13969 | struct thread_info *tp; | |
13970 | ||
13971 | ALL_NON_EXITED_THREADS (tp) | |
13972 | { | |
7aabaf9d | 13973 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
13974 | |
13975 | if (tp->inf == inf && priv != NULL) | |
13976 | { | |
7aabaf9d | 13977 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 13978 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
13979 | handle_len, priv->thread_handle.size ()); |
13980 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
13981 | handle_len) == 0) |
13982 | return tp; | |
13983 | } | |
13984 | } | |
13985 | ||
13986 | return NULL; | |
13987 | } | |
13988 | ||
57810aa7 | 13989 | bool |
f6ac5f3d | 13990 | remote_target::can_async_p () |
6426a772 | 13991 | { |
5d93a237 TT |
13992 | struct remote_state *rs = get_remote_state (); |
13993 | ||
3015c064 SM |
13994 | /* We don't go async if the user has explicitly prevented it with the |
13995 | "maint set target-async" command. */ | |
c6ebd6cf | 13996 | if (!target_async_permitted) |
57810aa7 | 13997 | return false; |
75c99385 | 13998 | |
23860348 | 13999 | /* We're async whenever the serial device is. */ |
5d93a237 | 14000 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14001 | } |
14002 | ||
57810aa7 | 14003 | bool |
f6ac5f3d | 14004 | remote_target::is_async_p () |
6426a772 | 14005 | { |
5d93a237 TT |
14006 | struct remote_state *rs = get_remote_state (); |
14007 | ||
c6ebd6cf | 14008 | if (!target_async_permitted) |
75c99385 | 14009 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14010 | return false; |
75c99385 | 14011 | |
23860348 | 14012 | /* We're async whenever the serial device is. */ |
5d93a237 | 14013 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14014 | } |
14015 | ||
2acceee2 JM |
14016 | /* Pass the SERIAL event on and up to the client. One day this code |
14017 | will be able to delay notifying the client of an event until the | |
23860348 | 14018 | point where an entire packet has been received. */ |
2acceee2 | 14019 | |
2acceee2 JM |
14020 | static serial_event_ftype remote_async_serial_handler; |
14021 | ||
6426a772 | 14022 | static void |
819cc324 | 14023 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14024 | { |
2acceee2 JM |
14025 | /* Don't propogate error information up to the client. Instead let |
14026 | the client find out about the error by querying the target. */ | |
6a3753b3 | 14027 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
14028 | } |
14029 | ||
74531fed PA |
14030 | static void |
14031 | remote_async_inferior_event_handler (gdb_client_data data) | |
14032 | { | |
6b8edb51 | 14033 | inferior_event_handler (INF_REG_EVENT, data); |
74531fed PA |
14034 | } |
14035 | ||
f6ac5f3d PA |
14036 | void |
14037 | remote_target::async (int enable) | |
2acceee2 | 14038 | { |
5d93a237 TT |
14039 | struct remote_state *rs = get_remote_state (); |
14040 | ||
6a3753b3 | 14041 | if (enable) |
2acceee2 | 14042 | { |
88b496c3 | 14043 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14044 | |
14045 | /* If there are pending events in the stop reply queue tell the | |
14046 | event loop to process them. */ | |
953edf2b | 14047 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14048 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14049 | /* For simplicity, below we clear the pending events token |
14050 | without remembering whether it is marked, so here we always | |
14051 | mark it. If there's actually no pending notification to | |
14052 | process, this ends up being a no-op (other than a spurious | |
14053 | event-loop wakeup). */ | |
14054 | if (target_is_non_stop_p ()) | |
14055 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14056 | } |
14057 | else | |
b7d2e916 PA |
14058 | { |
14059 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14060 | /* If the core is disabling async, it doesn't want to be |
14061 | disturbed with target events. Clear all async event sources | |
14062 | too. */ | |
6b8edb51 | 14063 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14064 | if (target_is_non_stop_p ()) |
14065 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14066 | } |
6426a772 JM |
14067 | } |
14068 | ||
65706a29 PA |
14069 | /* Implementation of the to_thread_events method. */ |
14070 | ||
f6ac5f3d PA |
14071 | void |
14072 | remote_target::thread_events (int enable) | |
65706a29 PA |
14073 | { |
14074 | struct remote_state *rs = get_remote_state (); | |
14075 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14076 | |
14077 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14078 | return; | |
14079 | ||
14080 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
14081 | putpkt (rs->buf); | |
14082 | getpkt (&rs->buf, &rs->buf_size, 0); | |
14083 | ||
14084 | switch (packet_ok (rs->buf, | |
14085 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14086 | { | |
14087 | case PACKET_OK: | |
14088 | if (strcmp (rs->buf, "OK") != 0) | |
14089 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
14090 | break; | |
14091 | case PACKET_ERROR: | |
14092 | warning (_("Remote failure reply: %s"), rs->buf); | |
14093 | break; | |
14094 | case PACKET_UNKNOWN: | |
14095 | break; | |
14096 | } | |
14097 | } | |
14098 | ||
5a2468f5 | 14099 | static void |
981a3fb3 | 14100 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 14101 | { |
635c7e8a | 14102 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
14103 | } |
14104 | ||
d471ea57 | 14105 | static void |
981a3fb3 | 14106 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14107 | { |
37a105a1 | 14108 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14109 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14110 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14111 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14112 | |
2e783024 | 14113 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14114 | for (; list != NULL; list = list->next) |
14115 | if (strcmp (list->name, "Z-packet") == 0) | |
14116 | continue; | |
427c3a89 DJ |
14117 | else if (list->type == not_set_cmd) |
14118 | /* Alias commands are exactly like the original, except they | |
14119 | don't have the normal type. */ | |
14120 | continue; | |
14121 | else | |
37a105a1 | 14122 | { |
2e783024 | 14123 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14124 | |
112e8700 SM |
14125 | uiout->field_string ("name", list->name); |
14126 | uiout->text (": "); | |
427c3a89 | 14127 | if (list->type == show_cmd) |
f5c4fcd9 | 14128 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14129 | else |
14130 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14131 | } |
d471ea57 | 14132 | } |
5a2468f5 | 14133 | |
0f71a2f6 | 14134 | |
23860348 | 14135 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14136 | static void |
14137 | remote_new_objfile (struct objfile *objfile) | |
14138 | { | |
6b8edb51 | 14139 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14140 | |
6b8edb51 PA |
14141 | if (remote != NULL) /* Have a remote connection. */ |
14142 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14143 | } |
14144 | ||
00bf0b85 SS |
14145 | /* Pull all the tracepoints defined on the target and create local |
14146 | data structures representing them. We don't want to create real | |
14147 | tracepoints yet, we don't want to mess up the user's existing | |
14148 | collection. */ | |
14149 | ||
f6ac5f3d PA |
14150 | int |
14151 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14152 | { |
00bf0b85 SS |
14153 | struct remote_state *rs = get_remote_state (); |
14154 | char *p; | |
d5551862 | 14155 | |
00bf0b85 SS |
14156 | /* Ask for a first packet of tracepoint definition. */ |
14157 | putpkt ("qTfP"); | |
14158 | getpkt (&rs->buf, &rs->buf_size, 0); | |
14159 | p = rs->buf; | |
14160 | while (*p && *p != 'l') | |
d5551862 | 14161 | { |
00bf0b85 SS |
14162 | parse_tracepoint_definition (p, utpp); |
14163 | /* Ask for another packet of tracepoint definition. */ | |
14164 | putpkt ("qTsP"); | |
14165 | getpkt (&rs->buf, &rs->buf_size, 0); | |
14166 | p = rs->buf; | |
d5551862 | 14167 | } |
00bf0b85 | 14168 | return 0; |
d5551862 SS |
14169 | } |
14170 | ||
f6ac5f3d PA |
14171 | int |
14172 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14173 | { |
00bf0b85 | 14174 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14175 | char *p; |
d5551862 | 14176 | |
00bf0b85 SS |
14177 | /* Ask for a first packet of variable definition. */ |
14178 | putpkt ("qTfV"); | |
d5551862 SS |
14179 | getpkt (&rs->buf, &rs->buf_size, 0); |
14180 | p = rs->buf; | |
00bf0b85 | 14181 | while (*p && *p != 'l') |
d5551862 | 14182 | { |
00bf0b85 SS |
14183 | parse_tsv_definition (p, utsvp); |
14184 | /* Ask for another packet of variable definition. */ | |
14185 | putpkt ("qTsV"); | |
d5551862 SS |
14186 | getpkt (&rs->buf, &rs->buf_size, 0); |
14187 | p = rs->buf; | |
14188 | } | |
00bf0b85 | 14189 | return 0; |
d5551862 SS |
14190 | } |
14191 | ||
c1e36e3e PA |
14192 | /* The "set/show range-stepping" show hook. */ |
14193 | ||
14194 | static void | |
14195 | show_range_stepping (struct ui_file *file, int from_tty, | |
14196 | struct cmd_list_element *c, | |
14197 | const char *value) | |
14198 | { | |
14199 | fprintf_filtered (file, | |
14200 | _("Debugger's willingness to use range stepping " | |
14201 | "is %s.\n"), value); | |
14202 | } | |
14203 | ||
6b8edb51 PA |
14204 | /* Return true if the vCont;r action is supported by the remote |
14205 | stub. */ | |
14206 | ||
14207 | bool | |
14208 | remote_target::vcont_r_supported () | |
14209 | { | |
14210 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14211 | remote_vcont_probe (); | |
14212 | ||
14213 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14214 | && get_remote_state ()->supports_vCont.r); | |
14215 | } | |
14216 | ||
c1e36e3e PA |
14217 | /* The "set/show range-stepping" set hook. */ |
14218 | ||
14219 | static void | |
eb4c3f4a | 14220 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14221 | struct cmd_list_element *c) |
14222 | { | |
6b8edb51 PA |
14223 | /* When enabling, check whether range stepping is actually supported |
14224 | by the target, and warn if not. */ | |
c1e36e3e PA |
14225 | if (use_range_stepping) |
14226 | { | |
6b8edb51 PA |
14227 | remote_target *remote = get_current_remote_target (); |
14228 | if (remote == NULL | |
14229 | || !remote->vcont_r_supported ()) | |
14230 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14231 | } |
14232 | } | |
14233 | ||
c906108c | 14234 | void |
fba45db2 | 14235 | _initialize_remote (void) |
c906108c | 14236 | { |
9a7071a8 | 14237 | struct cmd_list_element *cmd; |
6f937416 | 14238 | const char *cmd_name; |
ea9c271d | 14239 | |
0f71a2f6 | 14240 | /* architecture specific data */ |
29709017 DJ |
14241 | remote_g_packet_data_handle = |
14242 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14243 | |
94585166 DB |
14244 | remote_pspace_data |
14245 | = register_program_space_data_with_cleanup (NULL, | |
14246 | remote_pspace_data_cleanup); | |
14247 | ||
d9f719f1 PA |
14248 | add_target (remote_target_info, remote_target::open); |
14249 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14250 | |
dc8acb97 | 14251 | /* Hook into new objfile notification. */ |
76727919 | 14252 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14253 | |
c906108c SS |
14254 | #if 0 |
14255 | init_remote_threadtests (); | |
14256 | #endif | |
14257 | ||
23860348 | 14258 | /* set/show remote ... */ |
d471ea57 | 14259 | |
1bedd215 | 14260 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
14261 | Remote protocol specific variables\n\ |
14262 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14263 | the packets being used"), |
cff3e48b | 14264 | &remote_set_cmdlist, "set remote ", |
23860348 | 14265 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14266 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
14267 | Remote protocol specific variables\n\ |
14268 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14269 | the packets being used"), |
cff3e48b | 14270 | &remote_show_cmdlist, "show remote ", |
23860348 | 14271 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14272 | |
1a966eab AC |
14273 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14274 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14275 | Argument is a single section name (default: all loaded sections).\n\ |
14276 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14277 | &cmdlist); |
14278 | ||
1a966eab AC |
14279 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14280 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14281 | maintenance packet TEXT\n\ |
14282 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14283 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14284 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14285 | terminating `#' character and checksum."), |
c906108c SS |
14286 | &maintenancelist); |
14287 | ||
7915a72c AC |
14288 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14289 | Set whether to send break if interrupted."), _("\ | |
14290 | Show whether to send break if interrupted."), _("\ | |
14291 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14292 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14293 | &setlist, &showlist); |
9a7071a8 JB |
14294 | cmd_name = "remotebreak"; |
14295 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14296 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14297 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14298 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14299 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14300 | ||
14301 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14302 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14303 | _("\ | |
9a7071a8 JB |
14304 | Set interrupt sequence to remote target."), _("\ |
14305 | Show interrupt sequence to remote target."), _("\ | |
14306 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14307 | NULL, show_interrupt_sequence, | |
14308 | &remote_set_cmdlist, | |
14309 | &remote_show_cmdlist); | |
14310 | ||
14311 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14312 | &interrupt_on_connect, _("\ | |
14313 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14314 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14315 | If set, interrupt sequence is sent to remote target."), | |
14316 | NULL, NULL, | |
14317 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14318 | |
23860348 | 14319 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14320 | |
1a966eab AC |
14321 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14322 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14323 | &setlist); |
1a966eab AC |
14324 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14325 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14326 | &showlist); |
14327 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14328 | set_memory_write_packet_size, _("\ |
14329 | Set the maximum number of bytes per memory-write packet.\n\ | |
14330 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14331 | default packet size. The actual limit is further reduced\n\ | |
14332 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14333 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14334 | &remote_set_cmdlist); |
14335 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14336 | set_memory_read_packet_size, _("\ |
14337 | Set the maximum number of bytes per memory-read packet.\n\ | |
14338 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14339 | default packet size. The actual limit is further reduced\n\ | |
14340 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14341 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14342 | &remote_set_cmdlist); |
14343 | add_cmd ("memory-write-packet-size", no_class, | |
14344 | show_memory_write_packet_size, | |
1a966eab | 14345 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14346 | &remote_show_cmdlist); |
14347 | add_cmd ("memory-read-packet-size", no_class, | |
14348 | show_memory_read_packet_size, | |
1a966eab | 14349 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14350 | &remote_show_cmdlist); |
c906108c | 14351 | |
b3f42336 | 14352 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14353 | &remote_hw_watchpoint_limit, _("\ |
14354 | Set the maximum number of target hardware watchpoints."), _("\ | |
14355 | Show the maximum number of target hardware watchpoints."), _("\ | |
14356 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14357 | NULL, NULL, /* FIXME: i18n: The maximum |
14358 | number of target hardware | |
14359 | watchpoints is %s. */ | |
b3f42336 | 14360 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14361 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14362 | &remote_hw_watchpoint_length_limit, _("\ | |
14363 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14364 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14365 | Specify a negative limit for unlimited."), | |
14366 | NULL, NULL, /* FIXME: i18n: The maximum | |
14367 | length (in bytes) of a target | |
14368 | hardware watchpoint is %s. */ | |
14369 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14370 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14371 | &remote_hw_breakpoint_limit, _("\ |
14372 | Set the maximum number of target hardware breakpoints."), _("\ | |
14373 | Show the maximum number of target hardware breakpoints."), _("\ | |
14374 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14375 | NULL, NULL, /* FIXME: i18n: The maximum |
14376 | number of target hardware | |
14377 | breakpoints is %s. */ | |
b3f42336 | 14378 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14379 | |
1b493192 PA |
14380 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14381 | &remote_address_size, _("\ | |
4d28ad1e AC |
14382 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14383 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14384 | NULL, |
14385 | NULL, /* FIXME: i18n: */ | |
14386 | &setlist, &showlist); | |
c906108c | 14387 | |
ca4f7f8b PA |
14388 | init_all_packet_configs (); |
14389 | ||
444abaca | 14390 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14391 | "X", "binary-download", 1); |
0f71a2f6 | 14392 | |
444abaca | 14393 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14394 | "vCont", "verbose-resume", 0); |
506fb367 | 14395 | |
89be2091 DJ |
14396 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14397 | "QPassSignals", "pass-signals", 0); | |
14398 | ||
82075af2 JS |
14399 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14400 | "QCatchSyscalls", "catch-syscalls", 0); | |
14401 | ||
9b224c5e PA |
14402 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14403 | "QProgramSignals", "program-signals", 0); | |
14404 | ||
bc3b087d SDJ |
14405 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14406 | "QSetWorkingDir", "set-working-dir", 0); | |
14407 | ||
aefd8b33 SDJ |
14408 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14409 | "QStartupWithShell", "startup-with-shell", 0); | |
14410 | ||
0a2dde4a SDJ |
14411 | add_packet_config_cmd (&remote_protocol_packets |
14412 | [PACKET_QEnvironmentHexEncoded], | |
14413 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14414 | 0); | |
14415 | ||
14416 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14417 | "QEnvironmentReset", "environment-reset", | |
14418 | 0); | |
14419 | ||
14420 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14421 | "QEnvironmentUnset", "environment-unset", | |
14422 | 0); | |
14423 | ||
444abaca | 14424 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14425 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14426 | |
444abaca | 14427 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14428 | "P", "set-register", 1); |
d471ea57 | 14429 | |
444abaca | 14430 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14431 | "p", "fetch-register", 1); |
b96ec7ac | 14432 | |
444abaca | 14433 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14434 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14435 | |
444abaca | 14436 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14437 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14438 | |
444abaca | 14439 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14440 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14441 | |
444abaca | 14442 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14443 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14444 | |
444abaca | 14445 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14446 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14447 | |
0876f84a DJ |
14448 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14449 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14450 | |
c78fa86a GB |
14451 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14452 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14453 | ||
23181151 DJ |
14454 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14455 | "qXfer:features:read", "target-features", 0); | |
14456 | ||
cfa9d6d9 DJ |
14457 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14458 | "qXfer:libraries:read", "library-info", 0); | |
14459 | ||
2268b414 JK |
14460 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14461 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14462 | ||
fd79ecee DJ |
14463 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14464 | "qXfer:memory-map:read", "memory-map", 0); | |
14465 | ||
0e7f50da UW |
14466 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14467 | "qXfer:spu:read", "read-spu-object", 0); | |
14468 | ||
14469 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14470 | "qXfer:spu:write", "write-spu-object", 0); | |
14471 | ||
07e059b5 VP |
14472 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14473 | "qXfer:osdata:read", "osdata", 0); | |
14474 | ||
dc146f7c VP |
14475 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14476 | "qXfer:threads:read", "threads", 0); | |
14477 | ||
4aa995e1 PA |
14478 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14479 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14480 | ||
14481 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14482 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14483 | ||
b3b9301e PA |
14484 | add_packet_config_cmd |
14485 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14486 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14487 | |
169081d0 TG |
14488 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14489 | "qXfer:uib:read", "unwind-info-block", 0); | |
14490 | ||
444abaca | 14491 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14492 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14493 | 0); |
14494 | ||
711e434b PM |
14495 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14496 | "qGetTIBAddr", "get-thread-information-block-address", | |
14497 | 0); | |
14498 | ||
40ab02ce MS |
14499 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14500 | "bc", "reverse-continue", 0); | |
14501 | ||
14502 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14503 | "bs", "reverse-step", 0); | |
14504 | ||
be2a5f71 DJ |
14505 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14506 | "qSupported", "supported-packets", 0); | |
14507 | ||
08388c79 DE |
14508 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14509 | "qSearch:memory", "search-memory", 0); | |
14510 | ||
bd3eecc3 PA |
14511 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14512 | "qTStatus", "trace-status", 0); | |
14513 | ||
15a201c8 GB |
14514 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14515 | "vFile:setfs", "hostio-setfs", 0); | |
14516 | ||
a6b151f1 DJ |
14517 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14518 | "vFile:open", "hostio-open", 0); | |
14519 | ||
14520 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14521 | "vFile:pread", "hostio-pread", 0); | |
14522 | ||
14523 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14524 | "vFile:pwrite", "hostio-pwrite", 0); | |
14525 | ||
14526 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14527 | "vFile:close", "hostio-close", 0); | |
14528 | ||
14529 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14530 | "vFile:unlink", "hostio-unlink", 0); | |
14531 | ||
b9e7b9c3 UW |
14532 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14533 | "vFile:readlink", "hostio-readlink", 0); | |
14534 | ||
0a93529c GB |
14535 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14536 | "vFile:fstat", "hostio-fstat", 0); | |
14537 | ||
2d717e4f DJ |
14538 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14539 | "vAttach", "attach", 0); | |
14540 | ||
14541 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14542 | "vRun", "run", 0); | |
14543 | ||
a6f3e723 SL |
14544 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14545 | "QStartNoAckMode", "noack", 0); | |
14546 | ||
82f73884 PA |
14547 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14548 | "vKill", "kill", 0); | |
14549 | ||
0b16c5cf PA |
14550 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14551 | "qAttached", "query-attached", 0); | |
14552 | ||
782b2b07 | 14553 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14554 | "ConditionalTracepoints", |
14555 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14556 | |
14557 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14558 | "ConditionalBreakpoints", | |
14559 | "conditional-breakpoints", 0); | |
14560 | ||
d3ce09f5 SS |
14561 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14562 | "BreakpointCommands", | |
14563 | "breakpoint-commands", 0); | |
14564 | ||
7a697b8d SS |
14565 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14566 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14567 | |
409873ef SS |
14568 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14569 | "TracepointSource", "TracepointSource", 0); | |
14570 | ||
d914c394 SS |
14571 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14572 | "QAllow", "allow", 0); | |
14573 | ||
0fb4aa4b PA |
14574 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14575 | "StaticTracepoints", "static-tracepoints", 0); | |
14576 | ||
1e4d1764 YQ |
14577 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14578 | "InstallInTrace", "install-in-trace", 0); | |
14579 | ||
0fb4aa4b PA |
14580 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14581 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14582 | ||
78d85199 YQ |
14583 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14584 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14585 | ||
03583c20 UW |
14586 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14587 | "QDisableRandomization", "disable-randomization", 0); | |
14588 | ||
d1feda86 YQ |
14589 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14590 | "QAgent", "agent", 0); | |
14591 | ||
f6f899bf HAQ |
14592 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14593 | "QTBuffer:size", "trace-buffer-size", 0); | |
14594 | ||
9accd112 MM |
14595 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14596 | "Qbtrace:off", "disable-btrace", 0); | |
14597 | ||
14598 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14599 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14600 | ||
14601 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14602 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14603 | |
14604 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14605 | "qXfer:btrace", "read-btrace", 0); | |
14606 | ||
f4abbc16 MM |
14607 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14608 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14609 | ||
d33501a5 MM |
14610 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14611 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14612 | ||
73b8c1fd PA |
14613 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14614 | "multiprocess-feature", "multiprocess-feature", 0); | |
14615 | ||
f7e6eed5 PA |
14616 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14617 | "swbreak-feature", "swbreak-feature", 0); | |
14618 | ||
14619 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14620 | "hwbreak-feature", "hwbreak-feature", 0); | |
14621 | ||
89245bc0 DB |
14622 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14623 | "fork-event-feature", "fork-event-feature", 0); | |
14624 | ||
14625 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14626 | "vfork-event-feature", "vfork-event-feature", 0); | |
14627 | ||
b20a6524 MM |
14628 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14629 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14630 | ||
750ce8d1 YQ |
14631 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14632 | "vContSupported", "verbose-resume-supported", 0); | |
14633 | ||
94585166 DB |
14634 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14635 | "exec-event-feature", "exec-event-feature", 0); | |
14636 | ||
de979965 PA |
14637 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14638 | "vCtrlC", "ctrl-c", 0); | |
14639 | ||
65706a29 PA |
14640 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14641 | "QThreadEvents", "thread-events", 0); | |
14642 | ||
f2faf941 PA |
14643 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14644 | "N stop reply", "no-resumed-stop-reply", 0); | |
14645 | ||
0b736949 DB |
14646 | /* Assert that we've registered "set remote foo-packet" commands |
14647 | for all packet configs. */ | |
ca4f7f8b PA |
14648 | { |
14649 | int i; | |
14650 | ||
14651 | for (i = 0; i < PACKET_MAX; i++) | |
14652 | { | |
14653 | /* Ideally all configs would have a command associated. Some | |
14654 | still don't though. */ | |
14655 | int excepted; | |
14656 | ||
14657 | switch (i) | |
14658 | { | |
14659 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14660 | case PACKET_EnableDisableTracepoints_feature: |
14661 | case PACKET_tracenz_feature: | |
14662 | case PACKET_DisconnectedTracing_feature: | |
14663 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14664 | case PACKET_qCRC: |
14665 | /* Additions to this list need to be well justified: | |
14666 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14667 | excepted = 1; |
14668 | break; | |
14669 | default: | |
14670 | excepted = 0; | |
14671 | break; | |
14672 | } | |
14673 | ||
14674 | /* This catches both forgetting to add a config command, and | |
14675 | forgetting to remove a packet from the exception list. */ | |
14676 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14677 | } | |
14678 | } | |
14679 | ||
37a105a1 DJ |
14680 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14681 | Z sub-packet has its own set and show commands, but users may | |
14682 | have sets to this variable in their .gdbinit files (or in their | |
14683 | documentation). */ | |
e9e68a56 | 14684 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14685 | &remote_Z_packet_detect, _("\ |
14686 | Set use of remote protocol `Z' packets"), _("\ | |
14687 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14688 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14689 | packets."), |
e9e68a56 | 14690 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14691 | show_remote_protocol_Z_packet_cmd, |
14692 | /* FIXME: i18n: Use of remote protocol | |
14693 | `Z' packets is %s. */ | |
e9e68a56 | 14694 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14695 | |
a6b151f1 DJ |
14696 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14697 | Manipulate files on the remote system\n\ | |
14698 | Transfer files to and from the remote target system."), | |
14699 | &remote_cmdlist, "remote ", | |
14700 | 0 /* allow-unknown */, &cmdlist); | |
14701 | ||
14702 | add_cmd ("put", class_files, remote_put_command, | |
14703 | _("Copy a local file to the remote system."), | |
14704 | &remote_cmdlist); | |
14705 | ||
14706 | add_cmd ("get", class_files, remote_get_command, | |
14707 | _("Copy a remote file to the local system."), | |
14708 | &remote_cmdlist); | |
14709 | ||
14710 | add_cmd ("delete", class_files, remote_delete_command, | |
14711 | _("Delete a remote file."), | |
14712 | &remote_cmdlist); | |
14713 | ||
2d717e4f | 14714 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14715 | &remote_exec_file_var, _("\ |
2d717e4f | 14716 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14717 | Show the remote pathname for \"run\""), NULL, |
14718 | set_remote_exec_file, | |
14719 | show_remote_exec_file, | |
14720 | &remote_set_cmdlist, | |
14721 | &remote_show_cmdlist); | |
2d717e4f | 14722 | |
c1e36e3e PA |
14723 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14724 | &use_range_stepping, _("\ | |
14725 | Enable or disable range stepping."), _("\ | |
14726 | Show whether target-assisted range stepping is enabled."), _("\ | |
14727 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14728 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14729 | of issuing multiple single-steps. This speeds up source level\n\ | |
14730 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14731 | stepping is supported by the target. The default is on."), | |
14732 | set_range_stepping, | |
14733 | show_range_stepping, | |
14734 | &setlist, | |
14735 | &showlist); | |
14736 | ||
449092f6 CV |
14737 | /* Eventually initialize fileio. See fileio.c */ |
14738 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14739 | |
ba348170 | 14740 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14741 | special ptids with it set to != 0. */ |
ba348170 PA |
14742 | magic_null_ptid = ptid_build (42000, -1, 1); |
14743 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14744 | any_thread_ptid = ptid_build (42000, 0, 1); | |
c906108c | 14745 | } |