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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" |
35b1e5cc | 78 | |
f6ac5f3d PA |
79 | /* The remote target. */ |
80 | ||
81 | class remote_target : public target_ops | |
82 | { | |
83 | public: | |
84 | remote_target () | |
85 | { | |
86 | to_stratum = process_stratum; | |
87 | } | |
88 | ||
89 | const char *shortname () override | |
90 | { return "remote"; } | |
91 | ||
92 | const char *longname () override | |
93 | { return _("Remote serial target in gdb-specific protocol"); } | |
94 | ||
95 | const char *doc () override | |
96 | { | |
97 | return _("\ | |
98 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
99 | Specify the serial device it is connected to\n\ | |
100 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
101 | } | |
102 | ||
103 | thread_control_capabilities get_thread_control_capabilities () override | |
104 | { return tc_schedlock; } | |
105 | ||
106 | void open (const char *, int) override; | |
107 | void close () override; | |
108 | ||
109 | void detach (inferior *, int) override; | |
110 | void disconnect (const char *, int) override; | |
111 | ||
112 | void commit_resume () override; | |
113 | void resume (ptid_t, int, enum gdb_signal) override; | |
114 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
115 | ||
116 | void fetch_registers (struct regcache *, int) override; | |
117 | void store_registers (struct regcache *, int) override; | |
118 | void prepare_to_store (struct regcache *) override; | |
119 | ||
120 | void files_info () override; | |
121 | ||
122 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
123 | ||
124 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
125 | enum remove_bp_reason) override; | |
126 | ||
127 | ||
128 | int stopped_by_sw_breakpoint () override; | |
129 | int supports_stopped_by_sw_breakpoint () override; | |
130 | ||
131 | int stopped_by_hw_breakpoint () override; | |
132 | ||
133 | int supports_stopped_by_hw_breakpoint () override; | |
134 | ||
135 | int stopped_by_watchpoint () override; | |
136 | ||
137 | int stopped_data_address (CORE_ADDR *) override; | |
138 | ||
139 | int watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; | |
140 | ||
141 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
142 | ||
143 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
144 | ||
145 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
146 | ||
147 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
148 | ||
149 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
150 | struct expression *) override; | |
151 | ||
152 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
153 | struct expression *) override; | |
154 | ||
155 | void kill () override; | |
156 | ||
157 | void load (const char *, int) override; | |
158 | ||
159 | void mourn_inferior () override; | |
160 | ||
161 | void pass_signals (int, unsigned char *) override; | |
162 | ||
163 | int set_syscall_catchpoint (int, bool, int, | |
164 | gdb::array_view<const int>) override; | |
165 | ||
166 | void program_signals (int, unsigned char *) override; | |
167 | ||
168 | int thread_alive (ptid_t ptid) override; | |
169 | ||
170 | const char *thread_name (struct thread_info *) override; | |
171 | ||
172 | void update_thread_list () override; | |
173 | ||
174 | const char *pid_to_str (ptid_t) override; | |
175 | ||
176 | const char *extra_thread_info (struct thread_info *) override; | |
177 | ||
178 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
179 | ||
180 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
181 | int handle_len, | |
182 | inferior *inf) override; | |
183 | ||
184 | void stop (ptid_t) override; | |
185 | ||
186 | void interrupt () override; | |
187 | ||
188 | void pass_ctrlc () override; | |
189 | ||
190 | enum target_xfer_status xfer_partial (enum target_object object, | |
191 | const char *annex, | |
192 | gdb_byte *readbuf, | |
193 | const gdb_byte *writebuf, | |
194 | ULONGEST offset, ULONGEST len, | |
195 | ULONGEST *xfered_len) override; | |
196 | ||
197 | ULONGEST get_memory_xfer_limit () override; | |
198 | ||
199 | void rcmd (const char *command, struct ui_file *output) override; | |
200 | ||
201 | char *pid_to_exec_file (int pid) override; | |
202 | ||
203 | void log_command (const char *cmd) override | |
204 | { | |
205 | serial_log_command (this, cmd); | |
206 | } | |
207 | ||
208 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
209 | CORE_ADDR load_module_addr, | |
210 | CORE_ADDR offset) override; | |
211 | ||
212 | int has_all_memory () override { return default_child_has_all_memory (); } | |
213 | int has_memory () override { return default_child_has_memory (); } | |
214 | int has_stack () override { return default_child_has_stack (); } | |
215 | int has_registers () override { return default_child_has_registers (); } | |
216 | int has_execution (ptid_t ptid) override { return default_child_has_execution (ptid); } | |
217 | ||
218 | int can_execute_reverse () override; | |
219 | ||
220 | std::vector<mem_region> memory_map () override; | |
221 | ||
222 | void flash_erase (ULONGEST address, LONGEST length) override; | |
223 | ||
224 | void flash_done () override; | |
225 | ||
226 | const struct target_desc *read_description () override; | |
227 | ||
228 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
229 | const gdb_byte *pattern, ULONGEST pattern_len, | |
230 | CORE_ADDR *found_addrp) override; | |
231 | ||
232 | int can_async_p () override; | |
233 | ||
234 | int is_async_p () override; | |
235 | ||
236 | void async (int) override; | |
237 | ||
238 | void thread_events (int) override; | |
239 | ||
240 | int can_do_single_step () override; | |
241 | ||
242 | void terminal_inferior () override; | |
243 | ||
244 | void terminal_ours () override; | |
245 | ||
246 | int supports_non_stop () override; | |
247 | ||
248 | int supports_multi_process () override; | |
249 | ||
250 | int supports_disable_randomization () override; | |
251 | ||
252 | int filesystem_is_local () override; | |
253 | ||
254 | ||
255 | int fileio_open (struct inferior *inf, const char *filename, | |
256 | int flags, int mode, int warn_if_slow, | |
257 | int *target_errno) override; | |
258 | ||
259 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
260 | ULONGEST offset, int *target_errno) override; | |
261 | ||
262 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
263 | ULONGEST offset, int *target_errno) override; | |
264 | ||
265 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
266 | ||
267 | int fileio_close (int fd, int *target_errno) override; | |
268 | ||
269 | int fileio_unlink (struct inferior *inf, | |
270 | const char *filename, | |
271 | int *target_errno) override; | |
272 | ||
273 | gdb::optional<std::string> | |
274 | fileio_readlink (struct inferior *inf, | |
275 | const char *filename, | |
276 | int *target_errno) override; | |
277 | ||
278 | int supports_enable_disable_tracepoint () override; | |
279 | ||
280 | int supports_string_tracing () override; | |
281 | ||
282 | int supports_evaluation_of_breakpoint_conditions () override; | |
283 | ||
284 | int can_run_breakpoint_commands () override; | |
285 | ||
286 | void trace_init () override; | |
287 | ||
288 | void download_tracepoint (struct bp_location *location) override; | |
289 | ||
290 | int can_download_tracepoint () override; | |
291 | ||
292 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
293 | ||
294 | void enable_tracepoint (struct bp_location *location) override; | |
295 | ||
296 | void disable_tracepoint (struct bp_location *location) override; | |
297 | ||
298 | void trace_set_readonly_regions () override; | |
299 | ||
300 | void trace_start () override; | |
301 | ||
302 | int get_trace_status (struct trace_status *ts) override; | |
303 | ||
304 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
305 | override; | |
306 | ||
307 | void trace_stop () override; | |
308 | ||
309 | int trace_find (enum trace_find_type type, int num, | |
310 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
311 | ||
312 | int get_trace_state_variable_value (int tsv, LONGEST *val) override; | |
313 | ||
314 | int save_trace_data (const char *filename) override; | |
315 | ||
316 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
317 | ||
318 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
319 | ||
320 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
321 | ||
322 | int get_min_fast_tracepoint_insn_len () override; | |
323 | ||
324 | void set_disconnected_tracing (int val) override; | |
325 | ||
326 | void set_circular_trace_buffer (int val) override; | |
327 | ||
328 | void set_trace_buffer_size (LONGEST val) override; | |
329 | ||
330 | int set_trace_notes (const char *user, const char *notes, | |
331 | const char *stopnotes) override; | |
332 | ||
333 | int core_of_thread (ptid_t ptid) override; | |
334 | ||
335 | int verify_memory (const gdb_byte *data, | |
336 | CORE_ADDR memaddr, ULONGEST size) override; | |
337 | ||
338 | ||
339 | int get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; | |
340 | ||
341 | void set_permissions () override; | |
342 | ||
343 | bool static_tracepoint_marker_at (CORE_ADDR, | |
344 | struct static_tracepoint_marker *marker) | |
345 | override; | |
346 | ||
347 | std::vector<static_tracepoint_marker> | |
348 | static_tracepoint_markers_by_strid (const char *id) override; | |
349 | ||
350 | traceframe_info_up traceframe_info () override; | |
351 | ||
352 | int use_agent (int use) override; | |
353 | int can_use_agent () override; | |
354 | ||
355 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
356 | const struct btrace_config *conf) override; | |
357 | ||
358 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
359 | ||
360 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
361 | ||
362 | enum btrace_error read_btrace (struct btrace_data *data, | |
363 | struct btrace_target_info *btinfo, | |
364 | enum btrace_read_type type) override; | |
365 | ||
366 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
367 | int augmented_libraries_svr4_read () override; | |
368 | int follow_fork (int, int) override; | |
369 | void follow_exec (struct inferior *, char *) override; | |
370 | int insert_fork_catchpoint (int) override; | |
371 | int remove_fork_catchpoint (int) override; | |
372 | int insert_vfork_catchpoint (int) override; | |
373 | int remove_vfork_catchpoint (int) override; | |
374 | int insert_exec_catchpoint (int) override; | |
375 | int remove_exec_catchpoint (int) override; | |
376 | enum exec_direction_kind execution_direction () override; | |
377 | ||
378 | protected: | |
379 | void open_1 (const char *name, int from_tty, int extended_p); | |
380 | void start_remote (int from_tty, int extended_p); | |
381 | }; | |
382 | ||
383 | /* Set up the extended remote target by extending the standard remote | |
384 | target and adding to it. */ | |
385 | ||
386 | class extended_remote_target final : public remote_target | |
387 | { | |
388 | public: | |
389 | const char *shortname () override | |
390 | { return "extended-remote"; } | |
391 | ||
392 | const char *longname () override | |
393 | { return _("Extended remote serial target in gdb-specific protocol"); } | |
394 | ||
395 | void open (const char *, int) override; | |
396 | ||
397 | bool can_create_inferior () override { return true; } | |
398 | void create_inferior (const char *, const std::string &, | |
399 | char **, int) override; | |
400 | ||
401 | void detach (inferior *, int) override; | |
402 | ||
403 | bool can_attach () override { return true; } | |
404 | void attach (const char *, int) override; | |
405 | ||
406 | void post_attach (int) override; | |
407 | int supports_disable_randomization () override; | |
408 | }; | |
409 | ||
94585166 DB |
410 | /* Per-program-space data key. */ |
411 | static const struct program_space_data *remote_pspace_data; | |
412 | ||
413 | /* The variable registered as the control variable used by the | |
414 | remote exec-file commands. While the remote exec-file setting is | |
415 | per-program-space, the set/show machinery uses this as the | |
416 | location of the remote exec-file value. */ | |
417 | static char *remote_exec_file_var; | |
418 | ||
6765f3e5 DJ |
419 | /* The size to align memory write packets, when practical. The protocol |
420 | does not guarantee any alignment, and gdb will generate short | |
421 | writes and unaligned writes, but even as a best-effort attempt this | |
422 | can improve bulk transfers. For instance, if a write is misaligned | |
423 | relative to the target's data bus, the stub may need to make an extra | |
424 | round trip fetching data from the target. This doesn't make a | |
425 | huge difference, but it's easy to do, so we try to be helpful. | |
426 | ||
427 | The alignment chosen is arbitrary; usually data bus width is | |
428 | important here, not the possibly larger cache line size. */ | |
429 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
430 | ||
23860348 | 431 | /* Prototypes for local functions. */ |
6d820c5c | 432 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 433 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 434 | int forever, int *is_notif); |
6426a772 | 435 | |
cbb8991c DB |
436 | struct remote_state; |
437 | ||
438 | static int remote_vkill (int pid, struct remote_state *rs); | |
439 | ||
8020350c DB |
440 | static void remote_kill_k (void); |
441 | ||
a14ed312 | 442 | static int readchar (int timeout); |
c906108c | 443 | |
c33e31fd PA |
444 | static void remote_serial_write (const char *str, int len); |
445 | ||
a14ed312 | 446 | static void interrupt_query (void); |
c906108c | 447 | |
d62a8ae2 SM |
448 | static void set_general_thread (ptid_t ptid); |
449 | static void set_continue_thread (ptid_t ptid); | |
c906108c | 450 | |
a14ed312 | 451 | static void get_offsets (void); |
c906108c | 452 | |
6d820c5c DJ |
453 | static void skip_frame (void); |
454 | ||
455 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 456 | |
a14ed312 | 457 | static int hexnumlen (ULONGEST num); |
c906108c | 458 | |
a14ed312 | 459 | static int stubhex (int ch); |
c906108c | 460 | |
a14ed312 | 461 | static int hexnumstr (char *, ULONGEST); |
c906108c | 462 | |
a14ed312 | 463 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 464 | |
a14ed312 | 465 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 466 | |
baa336ce | 467 | static void print_packet (const char *); |
c906108c | 468 | |
a14ed312 | 469 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 470 | |
39f77062 | 471 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 472 | |
baa336ce | 473 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 474 | |
a14ed312 | 475 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 476 | |
5a2468f5 | 477 | struct packet_config; |
5a2468f5 | 478 | |
a14ed312 | 479 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 480 | |
bb572ddd DJ |
481 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
482 | int from_tty, | |
483 | struct cmd_list_element *c, | |
484 | const char *value); | |
485 | ||
82f73884 | 486 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
256642e8 | 487 | static ptid_t read_ptid (const char *buf, const char **obuf); |
82f73884 | 488 | |
c8d104ad PA |
489 | static void remote_query_supported (void); |
490 | ||
36d25514 | 491 | static void remote_check_symbols (void); |
c8d104ad | 492 | |
74531fed | 493 | struct stop_reply; |
74531fed | 494 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 495 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 496 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 497 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
498 | static int peek_stop_reply (ptid_t ptid); |
499 | ||
cbb8991c DB |
500 | struct threads_listing_context; |
501 | static void remove_new_fork_children (struct threads_listing_context *); | |
502 | ||
74531fed | 503 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 504 | |
d962ef82 DJ |
505 | static int remote_read_description_p (struct target_ops *target); |
506 | ||
176a6961 | 507 | static void remote_console_output (char *msg); |
dde08ee1 | 508 | |
f4abbc16 MM |
509 | static void remote_btrace_reset (void); |
510 | ||
c0272db5 TW |
511 | static void remote_btrace_maybe_reopen (void); |
512 | ||
221e1a37 PA |
513 | static int stop_reply_queue_length (void); |
514 | ||
80152258 PA |
515 | static void readahead_cache_invalidate (void); |
516 | ||
048094ac PA |
517 | static void remote_unpush_and_throw (void); |
518 | ||
b6bb3468 PA |
519 | static struct remote_state *get_remote_state (void); |
520 | ||
a6b151f1 DJ |
521 | /* For "remote". */ |
522 | ||
523 | static struct cmd_list_element *remote_cmdlist; | |
524 | ||
bb572ddd DJ |
525 | /* For "set remote" and "show remote". */ |
526 | ||
527 | static struct cmd_list_element *remote_set_cmdlist; | |
528 | static struct cmd_list_element *remote_show_cmdlist; | |
529 | ||
d458bd84 PA |
530 | /* Stub vCont actions support. |
531 | ||
532 | Each field is a boolean flag indicating whether the stub reports | |
533 | support for the corresponding action. */ | |
534 | ||
535 | struct vCont_action_support | |
536 | { | |
537 | /* vCont;t */ | |
538 | int t; | |
c1e36e3e PA |
539 | |
540 | /* vCont;r */ | |
541 | int r; | |
750ce8d1 YQ |
542 | |
543 | /* vCont;s */ | |
544 | int s; | |
545 | ||
546 | /* vCont;S */ | |
547 | int S; | |
d458bd84 PA |
548 | }; |
549 | ||
c1e36e3e PA |
550 | /* Controls whether GDB is willing to use range stepping. */ |
551 | ||
552 | static int use_range_stepping = 1; | |
553 | ||
0d031856 TT |
554 | #define OPAQUETHREADBYTES 8 |
555 | ||
556 | /* a 64 bit opaque identifier */ | |
557 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
558 | ||
559 | /* About this many threadisds fit in a packet. */ | |
560 | ||
561 | #define MAXTHREADLISTRESULTS 32 | |
562 | ||
6f8976bf YQ |
563 | /* The max number of chars in debug output. The rest of chars are |
564 | omitted. */ | |
565 | ||
566 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
567 | ||
80152258 PA |
568 | /* Data for the vFile:pread readahead cache. */ |
569 | ||
570 | struct readahead_cache | |
571 | { | |
572 | /* The file descriptor for the file that is being cached. -1 if the | |
573 | cache is invalid. */ | |
574 | int fd; | |
575 | ||
576 | /* The offset into the file that the cache buffer corresponds | |
577 | to. */ | |
578 | ULONGEST offset; | |
579 | ||
580 | /* The buffer holding the cache contents. */ | |
581 | gdb_byte *buf; | |
582 | /* The buffer's size. We try to read as much as fits into a packet | |
583 | at a time. */ | |
584 | size_t bufsize; | |
585 | ||
586 | /* Cache hit and miss counters. */ | |
587 | ULONGEST hit_count; | |
588 | ULONGEST miss_count; | |
589 | }; | |
590 | ||
ea9c271d DJ |
591 | /* Description of the remote protocol state for the currently |
592 | connected target. This is per-target state, and independent of the | |
593 | selected architecture. */ | |
594 | ||
595 | struct remote_state | |
596 | { | |
597 | /* A buffer to use for incoming packets, and its current size. The | |
598 | buffer is grown dynamically for larger incoming packets. | |
599 | Outgoing packets may also be constructed in this buffer. | |
600 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
601 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
602 | packets. */ | |
603 | char *buf; | |
604 | long buf_size; | |
be2a5f71 | 605 | |
1e51243a PA |
606 | /* True if we're going through initial connection setup (finding out |
607 | about the remote side's threads, relocating symbols, etc.). */ | |
608 | int starting_up; | |
609 | ||
be2a5f71 DJ |
610 | /* If we negotiated packet size explicitly (and thus can bypass |
611 | heuristics for the largest packet size that will not overflow | |
612 | a buffer in the stub), this will be set to that packet size. | |
613 | Otherwise zero, meaning to use the guessed size. */ | |
614 | long explicit_packet_size; | |
2d717e4f DJ |
615 | |
616 | /* remote_wait is normally called when the target is running and | |
617 | waits for a stop reply packet. But sometimes we need to call it | |
618 | when the target is already stopped. We can send a "?" packet | |
619 | and have remote_wait read the response. Or, if we already have | |
620 | the response, we can stash it in BUF and tell remote_wait to | |
621 | skip calling getpkt. This flag is set when BUF contains a | |
622 | stop reply packet and the target is not waiting. */ | |
623 | int cached_wait_status; | |
a6f3e723 SL |
624 | |
625 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
626 | expect acks from each other. The connection is assumed to be | |
627 | reliable. */ | |
628 | int noack_mode; | |
82f73884 PA |
629 | |
630 | /* True if we're connected in extended remote mode. */ | |
631 | int extended; | |
632 | ||
e24a49d8 PA |
633 | /* True if we resumed the target and we're waiting for the target to |
634 | stop. In the mean time, we can't start another command/query. | |
635 | The remote server wouldn't be ready to process it, so we'd | |
636 | timeout waiting for a reply that would never come and eventually | |
637 | we'd close the connection. This can happen in asynchronous mode | |
638 | because we allow GDB commands while the target is running. */ | |
639 | int waiting_for_stop_reply; | |
74531fed | 640 | |
d458bd84 PA |
641 | /* The status of the stub support for the various vCont actions. */ |
642 | struct vCont_action_support supports_vCont; | |
782b2b07 | 643 | |
3a29589a DJ |
644 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
645 | responded to that. */ | |
646 | int ctrlc_pending_p; | |
5d93a237 | 647 | |
048094ac PA |
648 | /* True if we saw a Ctrl-C while reading or writing from/to the |
649 | remote descriptor. At that point it is not safe to send a remote | |
650 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
651 | process it once we're done with sending/receiving the current | |
652 | packet, which should be shortly. If however that takes too long, | |
653 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
654 | int got_ctrlc_during_io; | |
655 | ||
5d93a237 TT |
656 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
657 | remote_open knows that we don't have a file open when the program | |
658 | starts. */ | |
659 | struct serial *remote_desc; | |
47f8a51d TT |
660 | |
661 | /* These are the threads which we last sent to the remote system. The | |
662 | TID member will be -1 for all or -2 for not sent yet. */ | |
663 | ptid_t general_thread; | |
664 | ptid_t continue_thread; | |
262e1174 TT |
665 | |
666 | /* This is the traceframe which we last selected on the remote system. | |
667 | It will be -1 if no traceframe is selected. */ | |
668 | int remote_traceframe_number; | |
747dc59d TT |
669 | |
670 | char *last_pass_packet; | |
5e4a05c4 TT |
671 | |
672 | /* The last QProgramSignals packet sent to the target. We bypass | |
673 | sending a new program signals list down to the target if the new | |
674 | packet is exactly the same as the last we sent. IOW, we only let | |
675 | the target know about program signals list changes. */ | |
676 | char *last_program_signals_packet; | |
b73be471 TT |
677 | |
678 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
679 | |
680 | int last_sent_step; | |
8e88304f | 681 | |
3a00c802 PA |
682 | /* The execution direction of the last resume we got. */ |
683 | enum exec_direction_kind last_resume_exec_dir; | |
684 | ||
8e88304f TT |
685 | char *finished_object; |
686 | char *finished_annex; | |
687 | ULONGEST finished_offset; | |
b80fafe3 TT |
688 | |
689 | /* Should we try the 'ThreadInfo' query packet? | |
690 | ||
691 | This variable (NOT available to the user: auto-detect only!) | |
692 | determines whether GDB will use the new, simpler "ThreadInfo" | |
693 | query or the older, more complex syntax for thread queries. | |
694 | This is an auto-detect variable (set to true at each connect, | |
695 | and set to false when the target fails to recognize it). */ | |
696 | int use_threadinfo_query; | |
697 | int use_threadextra_query; | |
88b496c3 | 698 | |
0d031856 TT |
699 | threadref echo_nextthread; |
700 | threadref nextthread; | |
701 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
702 | |
703 | /* The state of remote notification. */ | |
704 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
705 | |
706 | /* The branch trace configuration. */ | |
707 | struct btrace_config btrace_config; | |
15a201c8 GB |
708 | |
709 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
710 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
711 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
712 | has yet been sent. */ | |
713 | int fs_pid; | |
80152258 PA |
714 | |
715 | /* A readahead cache for vFile:pread. Often, reading a binary | |
716 | involves a sequence of small reads. E.g., when parsing an ELF | |
717 | file. A readahead cache helps mostly the case of remote | |
718 | debugging on a connection with higher latency, due to the | |
719 | request/reply nature of the RSP. We only cache data for a single | |
720 | file descriptor at a time. */ | |
721 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
722 | }; |
723 | ||
7aabaf9d SM |
724 | /* Private data that we'll store in (struct thread_info)->priv. */ |
725 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 726 | { |
7aabaf9d SM |
727 | std::string extra; |
728 | std::string name; | |
729 | int core = -1; | |
799a2abe | 730 | |
f6327dcb KB |
731 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
732 | sequence of bytes. */ | |
7aabaf9d | 733 | gdb::byte_vector thread_handle; |
f6327dcb | 734 | |
799a2abe | 735 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 736 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
737 | |
738 | /* This is set to the data address of the access causing the target | |
739 | to stop for a watchpoint. */ | |
7aabaf9d | 740 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
741 | |
742 | /* Fields used by the vCont action coalescing implemented in | |
743 | remote_resume / remote_commit_resume. remote_resume stores each | |
744 | thread's last resume request in these fields, so that a later | |
745 | remote_commit_resume knows which is the proper action for this | |
746 | thread to include in the vCont packet. */ | |
747 | ||
748 | /* True if the last target_resume call for this thread was a step | |
749 | request, false if a continue request. */ | |
7aabaf9d | 750 | int last_resume_step = 0; |
85ad3aaf PA |
751 | |
752 | /* The signal specified in the last target_resume call for this | |
753 | thread. */ | |
7aabaf9d | 754 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
755 | |
756 | /* Whether this thread was already vCont-resumed on the remote | |
757 | side. */ | |
7aabaf9d | 758 | int vcont_resumed = 0; |
dc146f7c VP |
759 | }; |
760 | ||
ea9c271d DJ |
761 | /* This data could be associated with a target, but we do not always |
762 | have access to the current target when we need it, so for now it is | |
763 | static. This will be fine for as long as only one target is in use | |
764 | at a time. */ | |
cf792862 | 765 | static struct remote_state *remote_state; |
ea9c271d DJ |
766 | |
767 | static struct remote_state * | |
0b83947e | 768 | get_remote_state_raw (void) |
ea9c271d | 769 | { |
cf792862 TT |
770 | return remote_state; |
771 | } | |
772 | ||
773 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
774 | return it. */ | |
775 | ||
776 | static struct remote_state * | |
777 | new_remote_state (void) | |
778 | { | |
779 | struct remote_state *result = XCNEW (struct remote_state); | |
780 | ||
781 | /* The default buffer size is unimportant; it will be expanded | |
782 | whenever a larger buffer is needed. */ | |
783 | result->buf_size = 400; | |
224c3ddb | 784 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 785 | result->remote_traceframe_number = -1; |
b73be471 | 786 | result->last_sent_signal = GDB_SIGNAL_0; |
3a00c802 | 787 | result->last_resume_exec_dir = EXEC_FORWARD; |
15a201c8 | 788 | result->fs_pid = -1; |
cf792862 TT |
789 | |
790 | return result; | |
ea9c271d DJ |
791 | } |
792 | ||
793 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 794 | |
ad10f812 AC |
795 | struct packet_reg |
796 | { | |
797 | long offset; /* Offset into G packet. */ | |
798 | long regnum; /* GDB's internal register number. */ | |
799 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 800 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 801 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 802 | at present. */ |
f5656ead | 803 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 804 | at present. */ |
ad10f812 AC |
805 | }; |
806 | ||
ea9c271d | 807 | struct remote_arch_state |
d01949b6 | 808 | { |
ad10f812 AC |
809 | /* Description of the remote protocol registers. */ |
810 | long sizeof_g_packet; | |
b323314b AC |
811 | |
812 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 813 | (making an array gdbarch_num_regs in size). */ |
b323314b | 814 | struct packet_reg *regs; |
ad10f812 | 815 | |
d01949b6 AC |
816 | /* This is the size (in chars) of the first response to the ``g'' |
817 | packet. It is used as a heuristic when determining the maximum | |
818 | size of memory-read and memory-write packets. A target will | |
819 | typically only reserve a buffer large enough to hold the ``g'' | |
820 | packet. The size does not include packet overhead (headers and | |
23860348 | 821 | trailers). */ |
d01949b6 AC |
822 | long actual_register_packet_size; |
823 | ||
824 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 825 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
826 | long remote_packet_size; |
827 | }; | |
828 | ||
35b1e5cc SS |
829 | /* Utility: generate error from an incoming stub packet. */ |
830 | static void | |
831 | trace_error (char *buf) | |
832 | { | |
833 | if (*buf++ != 'E') | |
834 | return; /* not an error msg */ | |
835 | switch (*buf) | |
836 | { | |
837 | case '1': /* malformed packet error */ | |
838 | if (*++buf == '0') /* general case: */ | |
839 | error (_("remote.c: error in outgoing packet.")); | |
840 | else | |
841 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
842 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
843 | default: |
844 | error (_("Target returns error code '%s'."), buf); | |
845 | } | |
846 | } | |
847 | ||
848 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 849 | |
35b1e5cc | 850 | static char * |
b6bb3468 | 851 | remote_get_noisy_reply () |
35b1e5cc | 852 | { |
b6bb3468 PA |
853 | struct remote_state *rs = get_remote_state (); |
854 | ||
35b1e5cc SS |
855 | do /* Loop on reply from remote stub. */ |
856 | { | |
857 | char *buf; | |
a744cf53 | 858 | |
0df8b418 | 859 | QUIT; /* Allow user to bail out with ^C. */ |
b6bb3468 PA |
860 | getpkt (&rs->buf, &rs->buf_size, 0); |
861 | buf = rs->buf; | |
ad91cd99 | 862 | if (buf[0] == 'E') |
35b1e5cc | 863 | trace_error (buf); |
61012eef | 864 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
865 | { |
866 | ULONGEST ul; | |
867 | CORE_ADDR from, to, org_to; | |
256642e8 | 868 | const char *p, *pp; |
dde08ee1 | 869 | int adjusted_size = 0; |
7556d4a4 | 870 | int relocated = 0; |
dde08ee1 PA |
871 | |
872 | p = buf + strlen ("qRelocInsn:"); | |
873 | pp = unpack_varlen_hex (p, &ul); | |
874 | if (*pp != ';') | |
cb91c06a | 875 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
876 | from = ul; |
877 | ||
878 | p = pp + 1; | |
a9cbf802 | 879 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
880 | to = ul; |
881 | ||
882 | org_to = to; | |
883 | ||
492d29ea | 884 | TRY |
dde08ee1 | 885 | { |
f5656ead | 886 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 887 | relocated = 1; |
dde08ee1 | 888 | } |
492d29ea | 889 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
890 | { |
891 | if (ex.error == MEMORY_ERROR) | |
892 | { | |
893 | /* Propagate memory errors silently back to the | |
894 | target. The stub may have limited the range of | |
895 | addresses we can write to, for example. */ | |
896 | } | |
897 | else | |
898 | { | |
899 | /* Something unexpectedly bad happened. Be verbose | |
900 | so we can tell what, and propagate the error back | |
901 | to the stub, so it doesn't get stuck waiting for | |
902 | a response. */ | |
903 | exception_fprintf (gdb_stderr, ex, | |
904 | _("warning: relocating instruction: ")); | |
905 | } | |
906 | putpkt ("E01"); | |
907 | } | |
492d29ea | 908 | END_CATCH |
7556d4a4 PA |
909 | |
910 | if (relocated) | |
dde08ee1 PA |
911 | { |
912 | adjusted_size = to - org_to; | |
913 | ||
b6bb3468 | 914 | xsnprintf (buf, rs->buf_size, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
915 | putpkt (buf); |
916 | } | |
dde08ee1 | 917 | } |
ad91cd99 | 918 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
919 | remote_console_output (buf + 1); /* 'O' message from stub */ |
920 | else | |
0df8b418 | 921 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
922 | } |
923 | while (1); | |
924 | } | |
3c3bea1c | 925 | |
d01949b6 AC |
926 | /* Handle for retreving the remote protocol data from gdbarch. */ |
927 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
928 | ||
ea9c271d | 929 | static struct remote_arch_state * |
5cd63fda | 930 | get_remote_arch_state (struct gdbarch *gdbarch) |
d01949b6 | 931 | { |
5cd63fda | 932 | gdb_assert (gdbarch != NULL); |
19ba03f4 | 933 | return ((struct remote_arch_state *) |
5cd63fda | 934 | gdbarch_data (gdbarch, remote_gdbarch_data_handle)); |
d01949b6 AC |
935 | } |
936 | ||
0b83947e DJ |
937 | /* Fetch the global remote target state. */ |
938 | ||
939 | static struct remote_state * | |
940 | get_remote_state (void) | |
941 | { | |
942 | /* Make sure that the remote architecture state has been | |
943 | initialized, because doing so might reallocate rs->buf. Any | |
944 | function which calls getpkt also needs to be mindful of changes | |
945 | to rs->buf, but this call limits the number of places which run | |
946 | into trouble. */ | |
5cd63fda | 947 | get_remote_arch_state (target_gdbarch ()); |
0b83947e DJ |
948 | |
949 | return get_remote_state_raw (); | |
950 | } | |
951 | ||
94585166 DB |
952 | /* Cleanup routine for the remote module's pspace data. */ |
953 | ||
954 | static void | |
955 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
956 | { | |
19ba03f4 | 957 | char *remote_exec_file = (char *) arg; |
94585166 DB |
958 | |
959 | xfree (remote_exec_file); | |
960 | } | |
961 | ||
962 | /* Fetch the remote exec-file from the current program space. */ | |
963 | ||
964 | static const char * | |
965 | get_remote_exec_file (void) | |
966 | { | |
967 | char *remote_exec_file; | |
968 | ||
19ba03f4 SM |
969 | remote_exec_file |
970 | = (char *) program_space_data (current_program_space, | |
971 | remote_pspace_data); | |
94585166 DB |
972 | if (remote_exec_file == NULL) |
973 | return ""; | |
974 | ||
975 | return remote_exec_file; | |
976 | } | |
977 | ||
978 | /* Set the remote exec file for PSPACE. */ | |
979 | ||
980 | static void | |
981 | set_pspace_remote_exec_file (struct program_space *pspace, | |
982 | char *remote_exec_file) | |
983 | { | |
19ba03f4 | 984 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
985 | |
986 | xfree (old_file); | |
987 | set_program_space_data (pspace, remote_pspace_data, | |
988 | xstrdup (remote_exec_file)); | |
989 | } | |
990 | ||
991 | /* The "set/show remote exec-file" set command hook. */ | |
992 | ||
993 | static void | |
eb4c3f4a | 994 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
995 | struct cmd_list_element *c) |
996 | { | |
997 | gdb_assert (remote_exec_file_var != NULL); | |
998 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
999 | } | |
1000 | ||
1001 | /* The "set/show remote exec-file" show command hook. */ | |
1002 | ||
1003 | static void | |
1004 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1005 | struct cmd_list_element *cmd, const char *value) | |
1006 | { | |
1007 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
1008 | } | |
1009 | ||
74ca34ce DJ |
1010 | static int |
1011 | compare_pnums (const void *lhs_, const void *rhs_) | |
1012 | { | |
19ba03f4 SM |
1013 | const struct packet_reg * const *lhs |
1014 | = (const struct packet_reg * const *) lhs_; | |
1015 | const struct packet_reg * const *rhs | |
1016 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
1017 | |
1018 | if ((*lhs)->pnum < (*rhs)->pnum) | |
1019 | return -1; | |
1020 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
1021 | return 0; | |
1022 | else | |
1023 | return 1; | |
1024 | } | |
1025 | ||
c21236dc PA |
1026 | static int |
1027 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1028 | { |
74ca34ce | 1029 | int regnum, num_remote_regs, offset; |
74ca34ce | 1030 | struct packet_reg **remote_regs; |
ea9c271d | 1031 | |
4a22f64d | 1032 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1033 | { |
c21236dc | 1034 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1035 | |
4a22f64d | 1036 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1037 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1038 | r->pnum = -1; | |
1039 | else | |
1040 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1041 | ||
b323314b | 1042 | r->regnum = regnum; |
74ca34ce DJ |
1043 | } |
1044 | ||
1045 | /* Define the g/G packet format as the contents of each register | |
1046 | with a remote protocol number, in order of ascending protocol | |
1047 | number. */ | |
1048 | ||
224c3ddb | 1049 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1050 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1051 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1052 | regnum++) |
c21236dc PA |
1053 | if (regs[regnum].pnum != -1) |
1054 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1055 | |
74ca34ce DJ |
1056 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
1057 | compare_pnums); | |
1058 | ||
1059 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1060 | { | |
1061 | remote_regs[regnum]->in_g_packet = 1; | |
1062 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1063 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1064 | } |
1065 | ||
c21236dc PA |
1066 | return offset; |
1067 | } | |
1068 | ||
1069 | /* Given the architecture described by GDBARCH, return the remote | |
1070 | protocol register's number and the register's offset in the g/G | |
1071 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1072 | If the target does not have a mapping for REGNUM, return false, | |
1073 | otherwise, return true. */ | |
1074 | ||
1075 | int | |
1076 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1077 | int *pnum, int *poffset) | |
1078 | { | |
c21236dc PA |
1079 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1080 | ||
b80406ac | 1081 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1082 | |
b80406ac | 1083 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1084 | |
1085 | *pnum = regs[regnum].pnum; | |
1086 | *poffset = regs[regnum].offset; | |
1087 | ||
c21236dc PA |
1088 | return *pnum != -1; |
1089 | } | |
1090 | ||
1091 | static void * | |
1092 | init_remote_state (struct gdbarch *gdbarch) | |
1093 | { | |
1094 | struct remote_state *rs = get_remote_state_raw (); | |
1095 | struct remote_arch_state *rsa; | |
1096 | ||
1097 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
1098 | ||
1099 | /* Use the architecture to build a regnum<->pnum table, which will be | |
1100 | 1:1 unless a feature set specifies otherwise. */ | |
1101 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
1102 | gdbarch_num_regs (gdbarch), | |
1103 | struct packet_reg); | |
1104 | ||
74ca34ce DJ |
1105 | /* Record the maximum possible size of the g packet - it may turn out |
1106 | to be smaller. */ | |
c21236dc | 1107 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 1108 | |
0df8b418 | 1109 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1110 | remote stubs have a hardwired buffer size of 400 bytes |
1111 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1112 | as the maximum packet-size to ensure that the packet and an extra | |
1113 | NUL character can always fit in the buffer. This stops GDB | |
1114 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
1115 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
1116 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 1117 | |
ea9c271d DJ |
1118 | /* This one is filled in when a ``g'' packet is received. */ |
1119 | rsa->actual_register_packet_size = 0; | |
1120 | ||
1121 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1122 | default, adjust the size accordingly. Remember that each byte is |
1123 | encoded as two characters. 32 is the overhead for the packet | |
1124 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1125 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1126 | little. */ |
ea9c271d DJ |
1127 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
1128 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 1129 | |
ea9c271d DJ |
1130 | /* Make sure that the packet buffer is plenty big enough for |
1131 | this architecture. */ | |
1132 | if (rs->buf_size < rsa->remote_packet_size) | |
1133 | { | |
1134 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 1135 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 1136 | } |
6d820c5c | 1137 | |
ea9c271d DJ |
1138 | return rsa; |
1139 | } | |
1140 | ||
1141 | /* Return the current allowed size of a remote packet. This is | |
1142 | inferred from the current architecture, and should be used to | |
1143 | limit the length of outgoing packets. */ | |
1144 | static long | |
1145 | get_remote_packet_size (void) | |
1146 | { | |
be2a5f71 | 1147 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 1148 | remote_arch_state *rsa = get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1149 | |
be2a5f71 DJ |
1150 | if (rs->explicit_packet_size) |
1151 | return rs->explicit_packet_size; | |
1152 | ||
ea9c271d | 1153 | return rsa->remote_packet_size; |
d01949b6 AC |
1154 | } |
1155 | ||
ad10f812 | 1156 | static struct packet_reg * |
5cd63fda PA |
1157 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1158 | long regnum) | |
ad10f812 | 1159 | { |
5cd63fda | 1160 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1161 | return NULL; |
1162 | else | |
ad10f812 | 1163 | { |
ea9c271d | 1164 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1165 | |
b323314b AC |
1166 | gdb_assert (r->regnum == regnum); |
1167 | return r; | |
ad10f812 | 1168 | } |
ad10f812 AC |
1169 | } |
1170 | ||
1171 | static struct packet_reg * | |
5cd63fda PA |
1172 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1173 | LONGEST pnum) | |
ad10f812 | 1174 | { |
b323314b | 1175 | int i; |
a744cf53 | 1176 | |
5cd63fda | 1177 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1178 | { |
ea9c271d | 1179 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1180 | |
b323314b AC |
1181 | if (r->pnum == pnum) |
1182 | return r; | |
ad10f812 AC |
1183 | } |
1184 | return NULL; | |
d01949b6 AC |
1185 | } |
1186 | ||
f6ac5f3d | 1187 | static remote_target remote_ops; |
c906108c | 1188 | |
f6ac5f3d | 1189 | static extended_remote_target extended_remote_ops; |
c906108c | 1190 | |
6426a772 JM |
1191 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
1192 | ``forever'' still use the normal timeout mechanism. This is | |
1193 | currently used by the ASYNC code to guarentee that target reads | |
1194 | during the initial connect always time-out. Once getpkt has been | |
1195 | modified to return a timeout indication and, in turn | |
1196 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 1197 | this can go away. */ |
6426a772 JM |
1198 | static int wait_forever_enabled_p = 1; |
1199 | ||
9a7071a8 JB |
1200 | /* Allow the user to specify what sequence to send to the remote |
1201 | when he requests a program interruption: Although ^C is usually | |
1202 | what remote systems expect (this is the default, here), it is | |
1203 | sometimes preferable to send a break. On other systems such | |
1204 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1205 | is required in order to interrupt the execution. */ | |
1206 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1207 | const char interrupt_sequence_break[] = "BREAK"; | |
1208 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1209 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1210 | { |
1211 | interrupt_sequence_control_c, | |
1212 | interrupt_sequence_break, | |
1213 | interrupt_sequence_break_g, | |
1214 | NULL | |
1215 | }; | |
1216 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1217 | ||
1218 | static void | |
1219 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1220 | struct cmd_list_element *c, | |
1221 | const char *value) | |
1222 | { | |
1223 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1224 | fprintf_filtered (file, | |
1225 | _("Send the ASCII ETX character (Ctrl-c) " | |
1226 | "to the remote target to interrupt the " | |
1227 | "execution of the program.\n")); | |
1228 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1229 | fprintf_filtered (file, | |
1230 | _("send a break signal to the remote target " | |
1231 | "to interrupt the execution of the program.\n")); | |
1232 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1233 | fprintf_filtered (file, | |
1234 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1235 | "the remote target to interrupt the execution " | |
1236 | "of Linux kernel.\n")); | |
1237 | else | |
1238 | internal_error (__FILE__, __LINE__, | |
1239 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1240 | interrupt_sequence_mode); | |
1241 | } | |
6426a772 | 1242 | |
9a7071a8 JB |
1243 | /* This boolean variable specifies whether interrupt_sequence is sent |
1244 | to the remote target when gdb connects to it. | |
1245 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1246 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
1247 | static int interrupt_on_connect = 0; | |
c906108c | 1248 | |
9a7071a8 JB |
1249 | /* This variable is used to implement the "set/show remotebreak" commands. |
1250 | Since these commands are now deprecated in favor of "set/show remote | |
1251 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
1252 | static int remote_break; |
1253 | ||
9a7071a8 | 1254 | static void |
eb4c3f4a | 1255 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1256 | { |
1257 | if (remote_break) | |
1258 | interrupt_sequence_mode = interrupt_sequence_break; | |
1259 | else | |
1260 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1261 | } | |
1262 | ||
1263 | static void | |
1264 | show_remotebreak (struct ui_file *file, int from_tty, | |
1265 | struct cmd_list_element *c, | |
1266 | const char *value) | |
1267 | { | |
1268 | } | |
1269 | ||
c906108c SS |
1270 | /* This variable sets the number of bits in an address that are to be |
1271 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1272 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1273 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1274 | initial implementation of remote.c restricted the address sent in | |
1275 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1276 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1277 | address was never sent. Since fixing this bug may cause a break in | |
1278 | some remote targets this variable is principly provided to | |
23860348 | 1279 | facilitate backward compatibility. */ |
c906108c | 1280 | |
883b9c6c | 1281 | static unsigned int remote_address_size; |
c906108c | 1282 | |
11cf8741 | 1283 | \f |
11cf8741 | 1284 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1285 | memory read/write packet. MIN (rsa->remote_packet_size, |
1286 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1287 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1288 | (speed up transfers). The variables ``preferred_*'' (the user |
1289 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1290 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1291 | |
1292 | struct memory_packet_config | |
1293 | { | |
a121b7c1 | 1294 | const char *name; |
11cf8741 JM |
1295 | long size; |
1296 | int fixed_p; | |
1297 | }; | |
1298 | ||
a5c0808e PA |
1299 | /* The default max memory-write-packet-size. The 16k is historical. |
1300 | (It came from older GDB's using alloca for buffers and the | |
1301 | knowledge (folklore?) that some hosts don't cope very well with | |
1302 | large alloca calls.) */ | |
1303 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1304 | ||
1305 | /* The minimum remote packet size for memory transfers. Ensures we | |
1306 | can write at least one byte. */ | |
1307 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1308 | ||
11cf8741 JM |
1309 | /* Compute the current size of a read/write packet. Since this makes |
1310 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1311 | ||
1312 | static long | |
1313 | get_memory_packet_size (struct memory_packet_config *config) | |
1314 | { | |
d01949b6 | 1315 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 1316 | remote_arch_state *rsa = get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1317 | |
11cf8741 JM |
1318 | long what_they_get; |
1319 | if (config->fixed_p) | |
1320 | { | |
1321 | if (config->size <= 0) | |
a5c0808e | 1322 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1323 | else |
1324 | what_they_get = config->size; | |
1325 | } | |
1326 | else | |
1327 | { | |
ea9c271d | 1328 | what_they_get = get_remote_packet_size (); |
23860348 | 1329 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1330 | if (config->size > 0 |
1331 | && what_they_get > config->size) | |
1332 | what_they_get = config->size; | |
be2a5f71 DJ |
1333 | |
1334 | /* Limit it to the size of the targets ``g'' response unless we have | |
1335 | permission from the stub to use a larger packet size. */ | |
1336 | if (rs->explicit_packet_size == 0 | |
1337 | && rsa->actual_register_packet_size > 0 | |
1338 | && what_they_get > rsa->actual_register_packet_size) | |
1339 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1340 | } |
a5c0808e PA |
1341 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1342 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1343 | |
1344 | /* Make sure there is room in the global buffer for this packet | |
1345 | (including its trailing NUL byte). */ | |
1346 | if (rs->buf_size < what_they_get + 1) | |
1347 | { | |
1348 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1349 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1350 | } |
1351 | ||
11cf8741 JM |
1352 | return what_they_get; |
1353 | } | |
1354 | ||
0df8b418 | 1355 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1356 | something really big then do a sanity check. */ |
11cf8741 JM |
1357 | |
1358 | static void | |
ac88e2de | 1359 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1360 | { |
1361 | int fixed_p = config->fixed_p; | |
1362 | long size = config->size; | |
a744cf53 | 1363 | |
11cf8741 | 1364 | if (args == NULL) |
8a3fe4f8 | 1365 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1366 | else if (strcmp (args, "hard") == 0 |
1367 | || strcmp (args, "fixed") == 0) | |
1368 | fixed_p = 1; | |
1369 | else if (strcmp (args, "soft") == 0 | |
1370 | || strcmp (args, "limit") == 0) | |
1371 | fixed_p = 0; | |
1372 | else | |
1373 | { | |
1374 | char *end; | |
a744cf53 | 1375 | |
11cf8741 JM |
1376 | size = strtoul (args, &end, 0); |
1377 | if (args == end) | |
8a3fe4f8 | 1378 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1379 | |
1380 | /* Instead of explicitly capping the size of a packet to or | |
1381 | disallowing it, the user is allowed to set the size to | |
1382 | something arbitrarily large. */ | |
11cf8741 | 1383 | } |
a5c0808e PA |
1384 | |
1385 | /* So that the query shows the correct value. */ | |
1386 | if (size <= 0) | |
1387 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1388 | ||
23860348 | 1389 | /* Extra checks? */ |
11cf8741 JM |
1390 | if (fixed_p && !config->fixed_p) |
1391 | { | |
e2e0b3e5 AC |
1392 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1393 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1394 | config->name, size)) |
8a3fe4f8 | 1395 | error (_("Packet size not changed.")); |
11cf8741 | 1396 | } |
23860348 | 1397 | /* Update the config. */ |
11cf8741 JM |
1398 | config->fixed_p = fixed_p; |
1399 | config->size = size; | |
1400 | } | |
1401 | ||
1402 | static void | |
1403 | show_memory_packet_size (struct memory_packet_config *config) | |
1404 | { | |
a3f17187 | 1405 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1406 | if (config->fixed_p) |
a3f17187 | 1407 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1408 | get_memory_packet_size (config)); |
1409 | else | |
a3f17187 | 1410 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1411 | get_memory_packet_size (config)); |
1412 | } | |
1413 | ||
1414 | static struct memory_packet_config memory_write_packet_config = | |
1415 | { | |
1416 | "memory-write-packet-size", | |
1417 | }; | |
1418 | ||
1419 | static void | |
ac88e2de | 1420 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1421 | { |
1422 | set_memory_packet_size (args, &memory_write_packet_config); | |
1423 | } | |
1424 | ||
1425 | static void | |
ac88e2de | 1426 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1427 | { |
1428 | show_memory_packet_size (&memory_write_packet_config); | |
1429 | } | |
1430 | ||
1431 | static long | |
1432 | get_memory_write_packet_size (void) | |
1433 | { | |
1434 | return get_memory_packet_size (&memory_write_packet_config); | |
1435 | } | |
1436 | ||
1437 | static struct memory_packet_config memory_read_packet_config = | |
1438 | { | |
1439 | "memory-read-packet-size", | |
1440 | }; | |
1441 | ||
1442 | static void | |
ac88e2de | 1443 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1444 | { |
1445 | set_memory_packet_size (args, &memory_read_packet_config); | |
1446 | } | |
1447 | ||
1448 | static void | |
ac88e2de | 1449 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1450 | { |
1451 | show_memory_packet_size (&memory_read_packet_config); | |
1452 | } | |
1453 | ||
1454 | static long | |
1455 | get_memory_read_packet_size (void) | |
1456 | { | |
1457 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1458 | |
11cf8741 JM |
1459 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1460 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1461 | increased beyond this. */ |
1462 | if (size > get_remote_packet_size ()) | |
1463 | size = get_remote_packet_size (); | |
11cf8741 JM |
1464 | return size; |
1465 | } | |
1466 | ||
11cf8741 | 1467 | \f |
5a2468f5 | 1468 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1469 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1470 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1471 | |
1472 | enum packet_support | |
1473 | { | |
1474 | PACKET_SUPPORT_UNKNOWN = 0, | |
1475 | PACKET_ENABLE, | |
1476 | PACKET_DISABLE | |
1477 | }; | |
1478 | ||
5a2468f5 JM |
1479 | struct packet_config |
1480 | { | |
bb572ddd DJ |
1481 | const char *name; |
1482 | const char *title; | |
4082afcc PA |
1483 | |
1484 | /* If auto, GDB auto-detects support for this packet or feature, | |
1485 | either through qSupported, or by trying the packet and looking | |
1486 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1487 | packet. If false, the packet is disabled. Configs that don't |
1488 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1489 | enum auto_boolean detect; |
4082afcc PA |
1490 | |
1491 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1492 | enum packet_support support; |
1493 | }; | |
1494 | ||
d471ea57 | 1495 | /* Analyze a packet's return value and update the packet config |
23860348 | 1496 | accordingly. */ |
d471ea57 AC |
1497 | |
1498 | enum packet_result | |
1499 | { | |
1500 | PACKET_ERROR, | |
1501 | PACKET_OK, | |
1502 | PACKET_UNKNOWN | |
1503 | }; | |
1504 | ||
4082afcc PA |
1505 | static enum packet_support packet_config_support (struct packet_config *config); |
1506 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1507 | |
1508 | static void | |
fba45db2 | 1509 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1510 | { |
a121b7c1 | 1511 | const char *support = "internal-error"; |
a744cf53 | 1512 | |
4082afcc | 1513 | switch (packet_config_support (config)) |
5a2468f5 JM |
1514 | { |
1515 | case PACKET_ENABLE: | |
1516 | support = "enabled"; | |
1517 | break; | |
1518 | case PACKET_DISABLE: | |
1519 | support = "disabled"; | |
1520 | break; | |
1521 | case PACKET_SUPPORT_UNKNOWN: | |
1522 | support = "unknown"; | |
1523 | break; | |
1524 | } | |
1525 | switch (config->detect) | |
1526 | { | |
7f19b9a2 | 1527 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1528 | printf_filtered (_("Support for the `%s' packet " |
1529 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1530 | config->name, support); |
5a2468f5 | 1531 | break; |
7f19b9a2 AC |
1532 | case AUTO_BOOLEAN_TRUE: |
1533 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1534 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1535 | config->name, support); | |
8e248173 | 1536 | break; |
5a2468f5 JM |
1537 | } |
1538 | } | |
1539 | ||
1540 | static void | |
bb572ddd DJ |
1541 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1542 | const char *title, int legacy) | |
d471ea57 | 1543 | { |
5a2468f5 JM |
1544 | char *set_doc; |
1545 | char *show_doc; | |
d471ea57 | 1546 | char *cmd_name; |
3ed07be4 | 1547 | |
5a2468f5 JM |
1548 | config->name = name; |
1549 | config->title = title; | |
b435e160 AC |
1550 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1551 | name, title); | |
3e43a32a MS |
1552 | show_doc = xstrprintf ("Show current use of remote " |
1553 | "protocol `%s' (%s) packet", | |
b435e160 | 1554 | name, title); |
d471ea57 | 1555 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1556 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1557 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1558 | &config->detect, set_doc, |
1559 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1560 | NULL, |
bb572ddd DJ |
1561 | show_remote_protocol_packet_cmd, |
1562 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1563 | /* The command code copies the documentation strings. */ |
1564 | xfree (set_doc); | |
1565 | xfree (show_doc); | |
23860348 | 1566 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1567 | if (legacy) |
1568 | { | |
1569 | char *legacy_name; | |
a744cf53 | 1570 | |
b435e160 | 1571 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1572 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1573 | &remote_set_cmdlist); |
d471ea57 | 1574 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1575 | &remote_show_cmdlist); |
d471ea57 | 1576 | } |
5a2468f5 JM |
1577 | } |
1578 | ||
d471ea57 | 1579 | static enum packet_result |
a76d924d | 1580 | packet_check_result (const char *buf) |
5a2468f5 | 1581 | { |
d471ea57 | 1582 | if (buf[0] != '\0') |
5a2468f5 | 1583 | { |
d471ea57 | 1584 | /* The stub recognized the packet request. Check that the |
23860348 | 1585 | operation succeeded. */ |
a76d924d DJ |
1586 | if (buf[0] == 'E' |
1587 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1588 | && buf[3] == '\0') | |
1589 | /* "Enn" - definitly an error. */ | |
1590 | return PACKET_ERROR; | |
1591 | ||
1592 | /* Always treat "E." as an error. This will be used for | |
1593 | more verbose error messages, such as E.memtypes. */ | |
1594 | if (buf[0] == 'E' && buf[1] == '.') | |
1595 | return PACKET_ERROR; | |
1596 | ||
1597 | /* The packet may or may not be OK. Just assume it is. */ | |
1598 | return PACKET_OK; | |
1599 | } | |
1600 | else | |
1601 | /* The stub does not support the packet. */ | |
1602 | return PACKET_UNKNOWN; | |
1603 | } | |
1604 | ||
1605 | static enum packet_result | |
1606 | packet_ok (const char *buf, struct packet_config *config) | |
1607 | { | |
1608 | enum packet_result result; | |
1609 | ||
4082afcc PA |
1610 | if (config->detect != AUTO_BOOLEAN_TRUE |
1611 | && config->support == PACKET_DISABLE) | |
1612 | internal_error (__FILE__, __LINE__, | |
1613 | _("packet_ok: attempt to use a disabled packet")); | |
1614 | ||
a76d924d DJ |
1615 | result = packet_check_result (buf); |
1616 | switch (result) | |
1617 | { | |
1618 | case PACKET_OK: | |
1619 | case PACKET_ERROR: | |
1620 | /* The stub recognized the packet request. */ | |
4082afcc | 1621 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1622 | { |
d471ea57 AC |
1623 | if (remote_debug) |
1624 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1625 | "Packet %s (%s) is supported\n", |
1626 | config->name, config->title); | |
d471ea57 | 1627 | config->support = PACKET_ENABLE; |
d471ea57 | 1628 | } |
a76d924d DJ |
1629 | break; |
1630 | case PACKET_UNKNOWN: | |
23860348 | 1631 | /* The stub does not support the packet. */ |
4082afcc PA |
1632 | if (config->detect == AUTO_BOOLEAN_AUTO |
1633 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1634 | { |
4082afcc PA |
1635 | /* If the stub previously indicated that the packet was |
1636 | supported then there is a protocol error. */ | |
1637 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1638 | config->name, config->title); | |
1639 | } | |
1640 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1641 | { | |
1642 | /* The user set it wrong. */ | |
1643 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1644 | config->name, config->title); | |
d471ea57 | 1645 | } |
4082afcc PA |
1646 | |
1647 | if (remote_debug) | |
1648 | fprintf_unfiltered (gdb_stdlog, | |
1649 | "Packet %s (%s) is NOT supported\n", | |
1650 | config->name, config->title); | |
1651 | config->support = PACKET_DISABLE; | |
a76d924d | 1652 | break; |
5a2468f5 | 1653 | } |
a76d924d DJ |
1654 | |
1655 | return result; | |
5a2468f5 JM |
1656 | } |
1657 | ||
444abaca DJ |
1658 | enum { |
1659 | PACKET_vCont = 0, | |
1660 | PACKET_X, | |
1661 | PACKET_qSymbol, | |
1662 | PACKET_P, | |
1663 | PACKET_p, | |
1664 | PACKET_Z0, | |
1665 | PACKET_Z1, | |
1666 | PACKET_Z2, | |
1667 | PACKET_Z3, | |
1668 | PACKET_Z4, | |
15a201c8 | 1669 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1670 | PACKET_vFile_open, |
1671 | PACKET_vFile_pread, | |
1672 | PACKET_vFile_pwrite, | |
1673 | PACKET_vFile_close, | |
1674 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1675 | PACKET_vFile_readlink, |
0a93529c | 1676 | PACKET_vFile_fstat, |
0876f84a | 1677 | PACKET_qXfer_auxv, |
23181151 | 1678 | PACKET_qXfer_features, |
c78fa86a | 1679 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1680 | PACKET_qXfer_libraries, |
2268b414 | 1681 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1682 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1683 | PACKET_qXfer_spu_read, |
1684 | PACKET_qXfer_spu_write, | |
07e059b5 | 1685 | PACKET_qXfer_osdata, |
dc146f7c | 1686 | PACKET_qXfer_threads, |
0fb4aa4b | 1687 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1688 | PACKET_qXfer_traceframe_info, |
169081d0 | 1689 | PACKET_qXfer_uib, |
711e434b | 1690 | PACKET_qGetTIBAddr, |
444abaca | 1691 | PACKET_qGetTLSAddr, |
be2a5f71 | 1692 | PACKET_qSupported, |
bd3eecc3 | 1693 | PACKET_qTStatus, |
89be2091 | 1694 | PACKET_QPassSignals, |
82075af2 | 1695 | PACKET_QCatchSyscalls, |
9b224c5e | 1696 | PACKET_QProgramSignals, |
bc3b087d | 1697 | PACKET_QSetWorkingDir, |
aefd8b33 | 1698 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1699 | PACKET_QEnvironmentHexEncoded, |
1700 | PACKET_QEnvironmentReset, | |
1701 | PACKET_QEnvironmentUnset, | |
936d2992 | 1702 | PACKET_qCRC, |
08388c79 | 1703 | PACKET_qSearch_memory, |
2d717e4f DJ |
1704 | PACKET_vAttach, |
1705 | PACKET_vRun, | |
a6f3e723 | 1706 | PACKET_QStartNoAckMode, |
82f73884 | 1707 | PACKET_vKill, |
4aa995e1 PA |
1708 | PACKET_qXfer_siginfo_read, |
1709 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1710 | PACKET_qAttached, |
4082afcc PA |
1711 | |
1712 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1713 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1714 | |
1715 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1716 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1717 | |
1718 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1719 | PACKET_BreakpointCommands, |
4082afcc PA |
1720 | |
1721 | /* Support for fast tracepoints. */ | |
7a697b8d | 1722 | PACKET_FastTracepoints, |
4082afcc PA |
1723 | |
1724 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1725 | PACKET_StaticTracepoints, |
4082afcc PA |
1726 | |
1727 | /* Support for installing tracepoints while a trace experiment is | |
1728 | running. */ | |
1e4d1764 | 1729 | PACKET_InstallInTrace, |
4082afcc | 1730 | |
40ab02ce MS |
1731 | PACKET_bc, |
1732 | PACKET_bs, | |
409873ef | 1733 | PACKET_TracepointSource, |
d914c394 | 1734 | PACKET_QAllow, |
78d85199 | 1735 | PACKET_qXfer_fdpic, |
03583c20 | 1736 | PACKET_QDisableRandomization, |
d1feda86 | 1737 | PACKET_QAgent, |
f6f899bf | 1738 | PACKET_QTBuffer_size, |
9accd112 MM |
1739 | PACKET_Qbtrace_off, |
1740 | PACKET_Qbtrace_bts, | |
b20a6524 | 1741 | PACKET_Qbtrace_pt, |
9accd112 | 1742 | PACKET_qXfer_btrace, |
4082afcc PA |
1743 | |
1744 | /* Support for the QNonStop packet. */ | |
1745 | PACKET_QNonStop, | |
1746 | ||
65706a29 PA |
1747 | /* Support for the QThreadEvents packet. */ |
1748 | PACKET_QThreadEvents, | |
1749 | ||
4082afcc PA |
1750 | /* Support for multi-process extensions. */ |
1751 | PACKET_multiprocess_feature, | |
1752 | ||
1753 | /* Support for enabling and disabling tracepoints while a trace | |
1754 | experiment is running. */ | |
1755 | PACKET_EnableDisableTracepoints_feature, | |
1756 | ||
1757 | /* Support for collecting strings using the tracenz bytecode. */ | |
1758 | PACKET_tracenz_feature, | |
1759 | ||
1760 | /* Support for continuing to run a trace experiment while GDB is | |
1761 | disconnected. */ | |
1762 | PACKET_DisconnectedTracing_feature, | |
1763 | ||
1764 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1765 | PACKET_augmented_libraries_svr4_read_feature, | |
1766 | ||
f4abbc16 MM |
1767 | /* Support for the qXfer:btrace-conf:read packet. */ |
1768 | PACKET_qXfer_btrace_conf, | |
1769 | ||
d33501a5 MM |
1770 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1771 | PACKET_Qbtrace_conf_bts_size, | |
1772 | ||
f7e6eed5 PA |
1773 | /* Support for swbreak+ feature. */ |
1774 | PACKET_swbreak_feature, | |
1775 | ||
1776 | /* Support for hwbreak+ feature. */ | |
1777 | PACKET_hwbreak_feature, | |
1778 | ||
89245bc0 DB |
1779 | /* Support for fork events. */ |
1780 | PACKET_fork_event_feature, | |
1781 | ||
1782 | /* Support for vfork events. */ | |
1783 | PACKET_vfork_event_feature, | |
1784 | ||
b20a6524 MM |
1785 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1786 | PACKET_Qbtrace_conf_pt_size, | |
1787 | ||
94585166 DB |
1788 | /* Support for exec events. */ |
1789 | PACKET_exec_event_feature, | |
1790 | ||
750ce8d1 YQ |
1791 | /* Support for query supported vCont actions. */ |
1792 | PACKET_vContSupported, | |
1793 | ||
de979965 PA |
1794 | /* Support remote CTRL-C. */ |
1795 | PACKET_vCtrlC, | |
1796 | ||
f2faf941 PA |
1797 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1798 | PACKET_no_resumed, | |
1799 | ||
444abaca DJ |
1800 | PACKET_MAX |
1801 | }; | |
506fb367 | 1802 | |
444abaca | 1803 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1804 | |
f7e6eed5 PA |
1805 | /* Returns the packet's corresponding "set remote foo-packet" command |
1806 | state. See struct packet_config for more details. */ | |
1807 | ||
1808 | static enum auto_boolean | |
1809 | packet_set_cmd_state (int packet) | |
1810 | { | |
1811 | return remote_protocol_packets[packet].detect; | |
1812 | } | |
1813 | ||
4082afcc PA |
1814 | /* Returns whether a given packet or feature is supported. This takes |
1815 | into account the state of the corresponding "set remote foo-packet" | |
1816 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1817 | |
4082afcc PA |
1818 | static enum packet_support |
1819 | packet_config_support (struct packet_config *config) | |
1820 | { | |
1821 | switch (config->detect) | |
444abaca | 1822 | { |
4082afcc PA |
1823 | case AUTO_BOOLEAN_TRUE: |
1824 | return PACKET_ENABLE; | |
1825 | case AUTO_BOOLEAN_FALSE: | |
1826 | return PACKET_DISABLE; | |
1827 | case AUTO_BOOLEAN_AUTO: | |
1828 | return config->support; | |
1829 | default: | |
1830 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1831 | } |
4082afcc PA |
1832 | } |
1833 | ||
1834 | /* Same as packet_config_support, but takes the packet's enum value as | |
1835 | argument. */ | |
1836 | ||
1837 | static enum packet_support | |
1838 | packet_support (int packet) | |
1839 | { | |
1840 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1841 | ||
1842 | return packet_config_support (config); | |
dc8acb97 MS |
1843 | } |
1844 | ||
5a2468f5 | 1845 | static void |
444abaca DJ |
1846 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1847 | struct cmd_list_element *c, | |
1848 | const char *value) | |
5a2468f5 | 1849 | { |
444abaca | 1850 | struct packet_config *packet; |
5a2468f5 | 1851 | |
444abaca DJ |
1852 | for (packet = remote_protocol_packets; |
1853 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1854 | packet++) | |
1855 | { | |
1856 | if (&packet->detect == c->var) | |
1857 | { | |
1858 | show_packet_config_cmd (packet); | |
1859 | return; | |
1860 | } | |
1861 | } | |
9b20d036 | 1862 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1863 | c->name); |
5a2468f5 JM |
1864 | } |
1865 | ||
d471ea57 AC |
1866 | /* Should we try one of the 'Z' requests? */ |
1867 | ||
1868 | enum Z_packet_type | |
1869 | { | |
1870 | Z_PACKET_SOFTWARE_BP, | |
1871 | Z_PACKET_HARDWARE_BP, | |
1872 | Z_PACKET_WRITE_WP, | |
1873 | Z_PACKET_READ_WP, | |
1874 | Z_PACKET_ACCESS_WP, | |
1875 | NR_Z_PACKET_TYPES | |
1876 | }; | |
96baa820 | 1877 | |
d471ea57 | 1878 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1879 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1880 | |
7f19b9a2 | 1881 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1882 | |
1883 | static void | |
eb4c3f4a | 1884 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 1885 | struct cmd_list_element *c) |
96baa820 | 1886 | { |
d471ea57 | 1887 | int i; |
a744cf53 | 1888 | |
d471ea57 | 1889 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1890 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1891 | } |
1892 | ||
1893 | static void | |
08546159 AC |
1894 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1895 | struct cmd_list_element *c, | |
1896 | const char *value) | |
96baa820 | 1897 | { |
d471ea57 | 1898 | int i; |
a744cf53 | 1899 | |
d471ea57 AC |
1900 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1901 | { | |
444abaca | 1902 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1903 | } |
96baa820 JM |
1904 | } |
1905 | ||
4082afcc PA |
1906 | /* Returns true if the multi-process extensions are in effect. */ |
1907 | ||
1908 | static int | |
1909 | remote_multi_process_p (struct remote_state *rs) | |
1910 | { | |
1911 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1912 | } | |
1913 | ||
de0d863e DB |
1914 | /* Returns true if fork events are supported. */ |
1915 | ||
1916 | static int | |
1917 | remote_fork_event_p (struct remote_state *rs) | |
1918 | { | |
1919 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1920 | } | |
1921 | ||
c269dbdb DB |
1922 | /* Returns true if vfork events are supported. */ |
1923 | ||
1924 | static int | |
1925 | remote_vfork_event_p (struct remote_state *rs) | |
1926 | { | |
1927 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1928 | } | |
1929 | ||
d46addbb DB |
1930 | /* Returns true if exec events are supported. */ |
1931 | ||
1932 | static int | |
1933 | remote_exec_event_p (struct remote_state *rs) | |
1934 | { | |
1935 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1936 | } | |
1937 | ||
cbb8991c DB |
1938 | /* Insert fork catchpoint target routine. If fork events are enabled |
1939 | then return success, nothing more to do. */ | |
1940 | ||
f6ac5f3d PA |
1941 | int |
1942 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
1943 | { |
1944 | struct remote_state *rs = get_remote_state (); | |
1945 | ||
1946 | return !remote_fork_event_p (rs); | |
1947 | } | |
1948 | ||
1949 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1950 | return success. */ | |
1951 | ||
f6ac5f3d PA |
1952 | int |
1953 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
1954 | { |
1955 | return 0; | |
1956 | } | |
1957 | ||
1958 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1959 | then return success, nothing more to do. */ | |
1960 | ||
f6ac5f3d PA |
1961 | int |
1962 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
1963 | { |
1964 | struct remote_state *rs = get_remote_state (); | |
1965 | ||
1966 | return !remote_vfork_event_p (rs); | |
1967 | } | |
1968 | ||
1969 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1970 | return success. */ | |
1971 | ||
f6ac5f3d PA |
1972 | int |
1973 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
1974 | { |
1975 | return 0; | |
1976 | } | |
1977 | ||
d46addbb DB |
1978 | /* Insert exec catchpoint target routine. If exec events are |
1979 | enabled, just return success. */ | |
1980 | ||
f6ac5f3d PA |
1981 | int |
1982 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
1983 | { |
1984 | struct remote_state *rs = get_remote_state (); | |
1985 | ||
1986 | return !remote_exec_event_p (rs); | |
1987 | } | |
1988 | ||
1989 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1990 | return success. */ | |
1991 | ||
f6ac5f3d PA |
1992 | int |
1993 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
1994 | { |
1995 | return 0; | |
1996 | } | |
1997 | ||
74531fed PA |
1998 | \f |
1999 | /* Asynchronous signal handle registered as event loop source for | |
2000 | when we have pending events ready to be passed to the core. */ | |
2001 | ||
2002 | static struct async_event_handler *remote_async_inferior_event_token; | |
2003 | ||
c906108c SS |
2004 | \f |
2005 | ||
79d7f229 PA |
2006 | static ptid_t magic_null_ptid; |
2007 | static ptid_t not_sent_ptid; | |
2008 | static ptid_t any_thread_ptid; | |
2009 | ||
0b16c5cf PA |
2010 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2011 | detach instead of killing it when bailing out). */ | |
2012 | ||
2013 | static int | |
2014 | remote_query_attached (int pid) | |
2015 | { | |
2016 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2017 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2018 | |
4082afcc | 2019 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2020 | return 0; |
2021 | ||
2022 | if (remote_multi_process_p (rs)) | |
bba74b36 | 2023 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 2024 | else |
bba74b36 | 2025 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
2026 | |
2027 | putpkt (rs->buf); | |
2028 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2029 | ||
2030 | switch (packet_ok (rs->buf, | |
1554e9be | 2031 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2032 | { |
2033 | case PACKET_OK: | |
2034 | if (strcmp (rs->buf, "1") == 0) | |
2035 | return 1; | |
2036 | break; | |
2037 | case PACKET_ERROR: | |
2038 | warning (_("Remote failure reply: %s"), rs->buf); | |
2039 | break; | |
2040 | case PACKET_UNKNOWN: | |
2041 | break; | |
2042 | } | |
2043 | ||
2044 | return 0; | |
2045 | } | |
2046 | ||
49c62f2e PA |
2047 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2048 | has been invented by GDB, instead of reported by the target. Since | |
2049 | we can be connected to a remote system before before knowing about | |
2050 | any inferior, mark the target with execution when we find the first | |
2051 | inferior. If ATTACHED is 1, then we had just attached to this | |
2052 | inferior. If it is 0, then we just created this inferior. If it | |
2053 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2054 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2055 | attempt to open this inferior's executable as the main executable | |
2056 | if no main executable is open already. */ | |
1941c569 PA |
2057 | |
2058 | static struct inferior * | |
1b6e6f5c GB |
2059 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
2060 | int try_open_exec) | |
1941c569 | 2061 | { |
1941c569 PA |
2062 | struct inferior *inf; |
2063 | ||
0b16c5cf PA |
2064 | /* Check whether this process we're learning about is to be |
2065 | considered attached, or if is to be considered to have been | |
2066 | spawned by the stub. */ | |
2067 | if (attached == -1) | |
2068 | attached = remote_query_attached (pid); | |
2069 | ||
f5656ead | 2070 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2071 | { |
2072 | /* If the target shares code across all inferiors, then every | |
2073 | attach adds a new inferior. */ | |
2074 | inf = add_inferior (pid); | |
2075 | ||
2076 | /* ... and every inferior is bound to the same program space. | |
2077 | However, each inferior may still have its own address | |
2078 | space. */ | |
2079 | inf->aspace = maybe_new_address_space (); | |
2080 | inf->pspace = current_program_space; | |
2081 | } | |
2082 | else | |
2083 | { | |
2084 | /* In the traditional debugging scenario, there's a 1-1 match | |
2085 | between program/address spaces. We simply bind the inferior | |
2086 | to the program space's address space. */ | |
2087 | inf = current_inferior (); | |
2088 | inferior_appeared (inf, pid); | |
2089 | } | |
1941c569 | 2090 | |
0b16c5cf | 2091 | inf->attach_flag = attached; |
49c62f2e | 2092 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2093 | |
1b6e6f5c GB |
2094 | /* If no main executable is currently open then attempt to |
2095 | open the file that was executed to create this inferior. */ | |
835205d0 | 2096 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2097 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2098 | |
1941c569 PA |
2099 | return inf; |
2100 | } | |
2101 | ||
7aabaf9d | 2102 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
85ad3aaf | 2103 | |
1941c569 PA |
2104 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2105 | according to RUNNING. */ | |
2106 | ||
c906108c | 2107 | static void |
0d5b594f | 2108 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 2109 | { |
b7ea362b | 2110 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2111 | struct thread_info *thread; |
b7ea362b PA |
2112 | |
2113 | /* GDB historically didn't pull threads in the initial connection | |
2114 | setup. If the remote target doesn't even have a concept of | |
2115 | threads (e.g., a bare-metal target), even if internally we | |
2116 | consider that a single-threaded target, mentioning a new thread | |
2117 | might be confusing to the user. Be silent then, preserving the | |
2118 | age old behavior. */ | |
2119 | if (rs->starting_up) | |
85ad3aaf | 2120 | thread = add_thread_silent (ptid); |
b7ea362b | 2121 | else |
85ad3aaf | 2122 | thread = add_thread (ptid); |
1941c569 | 2123 | |
7aabaf9d | 2124 | get_remote_thread_info (thread)->vcont_resumed = executing; |
0d5b594f | 2125 | set_executing (ptid, executing); |
1941c569 PA |
2126 | set_running (ptid, running); |
2127 | } | |
2128 | ||
2129 | /* Come here when we learn about a thread id from the remote target. | |
2130 | It may be the first time we hear about such thread, so take the | |
2131 | opportunity to add it to GDB's thread list. In case this is the | |
2132 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2133 | GDB's inferior list as well. EXECUTING indicates whether the |
2134 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
2135 | |
2136 | static void | |
0d5b594f | 2137 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 2138 | { |
0d5b594f PA |
2139 | /* In non-stop mode, we assume new found threads are (externally) |
2140 | running until proven otherwise with a stop reply. In all-stop, | |
2141 | we can only get here if all threads are stopped. */ | |
2142 | int running = target_is_non_stop_p () ? 1 : 0; | |
2143 | ||
c906108c SS |
2144 | /* If this is a new thread, add it to GDB's thread list. |
2145 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
2146 | |
2147 | if (in_thread_list (currthread) && is_exited (currthread)) | |
2148 | { | |
2149 | /* We're seeing an event on a thread id we knew had exited. | |
2150 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2151 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2152 | return; |
2153 | } | |
2154 | ||
79d7f229 | 2155 | if (!in_thread_list (currthread)) |
c0a2216e | 2156 | { |
1941c569 | 2157 | struct inferior *inf = NULL; |
bad34192 | 2158 | int pid = ptid_get_pid (currthread); |
1941c569 | 2159 | |
bad34192 PA |
2160 | if (ptid_is_pid (inferior_ptid) |
2161 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
2162 | { |
2163 | /* inferior_ptid has no thread member yet. This can happen | |
2164 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2165 | stub doesn't support qC. This is the first stop reported | |
2166 | after an attach, so this is the main thread. Update the | |
2167 | ptid in the thread list. */ | |
bad34192 PA |
2168 | if (in_thread_list (pid_to_ptid (pid))) |
2169 | thread_change_ptid (inferior_ptid, currthread); | |
2170 | else | |
2171 | { | |
0d5b594f | 2172 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
2173 | inferior_ptid = currthread; |
2174 | } | |
dc146f7c | 2175 | return; |
c0a2216e | 2176 | } |
82f73884 PA |
2177 | |
2178 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
2179 | { |
2180 | /* inferior_ptid is not set yet. This can happen with the | |
2181 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2182 | doesn't support qC. This is the first stop reported | |
2183 | after an attach, so this is the main thread. Update the | |
2184 | ptid in the thread list. */ | |
dc146f7c | 2185 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 2186 | return; |
c0a2216e | 2187 | } |
82f73884 | 2188 | |
29c87f7f PA |
2189 | /* When connecting to a target remote, or to a target |
2190 | extended-remote which already was debugging an inferior, we | |
2191 | may not know about it yet. Add it before adding its child | |
2192 | thread, so notifications are emitted in a sensible order. */ | |
2193 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
2194 | { |
2195 | struct remote_state *rs = get_remote_state (); | |
2196 | int fake_pid_p = !remote_multi_process_p (rs); | |
2197 | ||
2198 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 2199 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 2200 | } |
29c87f7f | 2201 | |
82f73884 | 2202 | /* This is really a new thread. Add it. */ |
0d5b594f | 2203 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
2204 | |
2205 | /* If we found a new inferior, let the common code do whatever | |
2206 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2207 | breakpoints), unless we're just setting up an all-stop |
2208 | connection. */ | |
1941c569 | 2209 | if (inf != NULL) |
b7ea362b PA |
2210 | { |
2211 | struct remote_state *rs = get_remote_state (); | |
2212 | ||
6efcd9a8 | 2213 | if (!rs->starting_up) |
0d5b594f | 2214 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 2215 | } |
c0a2216e | 2216 | } |
c906108c SS |
2217 | } |
2218 | ||
85ad3aaf | 2219 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2220 | |
7aabaf9d SM |
2221 | static remote_thread_info * |
2222 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2223 | { |
85ad3aaf | 2224 | gdb_assert (thread != NULL); |
dc146f7c | 2225 | |
85ad3aaf | 2226 | if (thread->priv == NULL) |
7aabaf9d | 2227 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2228 | |
7aabaf9d | 2229 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2230 | } |
2231 | ||
2232 | /* Return PTID's private thread data, creating it if necessary. */ | |
2233 | ||
7aabaf9d SM |
2234 | static remote_thread_info * |
2235 | get_remote_thread_info (ptid_t ptid) | |
85ad3aaf PA |
2236 | { |
2237 | struct thread_info *info = find_thread_ptid (ptid); | |
2238 | ||
7aabaf9d | 2239 | return get_remote_thread_info (info); |
dc146f7c VP |
2240 | } |
2241 | ||
74531fed PA |
2242 | /* Call this function as a result of |
2243 | 1) A halt indication (T packet) containing a thread id | |
2244 | 2) A direct query of currthread | |
0df8b418 | 2245 | 3) Successful execution of set thread */ |
74531fed PA |
2246 | |
2247 | static void | |
47f8a51d | 2248 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2249 | { |
47f8a51d | 2250 | rs->general_thread = currthread; |
74531fed PA |
2251 | } |
2252 | ||
89be2091 DJ |
2253 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2254 | it can simply pass through to the inferior without reporting. */ | |
2255 | ||
f6ac5f3d PA |
2256 | void |
2257 | remote_target::pass_signals (int numsigs, unsigned char *pass_signals) | |
89be2091 | 2258 | { |
4082afcc | 2259 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2260 | { |
2261 | char *pass_packet, *p; | |
89be2091 | 2262 | int count = 0, i; |
747dc59d | 2263 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
2264 | |
2265 | gdb_assert (numsigs < 256); | |
2266 | for (i = 0; i < numsigs; i++) | |
2267 | { | |
2455069d | 2268 | if (pass_signals[i]) |
89be2091 DJ |
2269 | count++; |
2270 | } | |
224c3ddb | 2271 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2272 | strcpy (pass_packet, "QPassSignals:"); |
2273 | p = pass_packet + strlen (pass_packet); | |
2274 | for (i = 0; i < numsigs; i++) | |
2275 | { | |
2455069d | 2276 | if (pass_signals[i]) |
89be2091 DJ |
2277 | { |
2278 | if (i >= 16) | |
2279 | *p++ = tohex (i >> 4); | |
2280 | *p++ = tohex (i & 15); | |
2281 | if (count) | |
2282 | *p++ = ';'; | |
2283 | else | |
2284 | break; | |
2285 | count--; | |
2286 | } | |
2287 | } | |
2288 | *p = 0; | |
747dc59d | 2289 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2290 | { |
89be2091 DJ |
2291 | putpkt (pass_packet); |
2292 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2293 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2294 | if (rs->last_pass_packet) |
2295 | xfree (rs->last_pass_packet); | |
2296 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2297 | } |
2298 | else | |
2299 | xfree (pass_packet); | |
2300 | } | |
2301 | } | |
2302 | ||
82075af2 JS |
2303 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2304 | to report syscalls to GDB. */ | |
2305 | ||
f6ac5f3d PA |
2306 | int |
2307 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2308 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2309 | { |
b80406ac | 2310 | const char *catch_packet; |
82075af2 JS |
2311 | enum packet_result result; |
2312 | int n_sysno = 0; | |
2313 | ||
2314 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2315 | { | |
2316 | /* Not supported. */ | |
2317 | return 1; | |
2318 | } | |
2319 | ||
649a140c | 2320 | if (needed && any_count == 0) |
82075af2 | 2321 | { |
649a140c PA |
2322 | /* Count how many syscalls are to be caught. */ |
2323 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2324 | { |
649a140c | 2325 | if (syscall_counts[i] != 0) |
82075af2 JS |
2326 | n_sysno++; |
2327 | } | |
2328 | } | |
2329 | ||
2330 | if (remote_debug) | |
2331 | { | |
2332 | fprintf_unfiltered (gdb_stdlog, | |
2333 | "remote_set_syscall_catchpoint " | |
2334 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2335 | pid, needed, any_count, n_sysno); | |
2336 | } | |
2337 | ||
1b81856f | 2338 | std::string built_packet; |
82075af2 JS |
2339 | if (needed) |
2340 | { | |
2341 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2342 | characters for a sysno. If the resulting packet size is too | |
2343 | big, fallback on the non-selective packet. */ | |
2344 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2345 | built_packet.reserve (maxpktsz); |
2346 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2347 | if (any_count == 0) |
82075af2 | 2348 | { |
649a140c PA |
2349 | /* Add in each syscall to be caught. */ |
2350 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2351 | { |
649a140c PA |
2352 | if (syscall_counts[i] != 0) |
2353 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2354 | } |
2355 | } | |
1b81856f | 2356 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2357 | { |
2358 | /* catch_packet too big. Fallback to less efficient | |
2359 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2360 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2361 | } |
b80406ac | 2362 | else |
1b81856f | 2363 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2364 | } |
2365 | else | |
b80406ac | 2366 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2367 | |
b80406ac | 2368 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2369 | |
b80406ac TT |
2370 | putpkt (catch_packet); |
2371 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2372 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2373 | if (result == PACKET_OK) | |
2374 | return 0; | |
2375 | else | |
2376 | return -1; | |
82075af2 JS |
2377 | } |
2378 | ||
9b224c5e PA |
2379 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2380 | signals it should pass through to the inferior when detaching. */ | |
2381 | ||
f6ac5f3d PA |
2382 | void |
2383 | remote_target::program_signals (int numsigs, unsigned char *signals) | |
9b224c5e | 2384 | { |
4082afcc | 2385 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2386 | { |
2387 | char *packet, *p; | |
2388 | int count = 0, i; | |
5e4a05c4 | 2389 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2390 | |
2391 | gdb_assert (numsigs < 256); | |
2392 | for (i = 0; i < numsigs; i++) | |
2393 | { | |
2394 | if (signals[i]) | |
2395 | count++; | |
2396 | } | |
224c3ddb | 2397 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2398 | strcpy (packet, "QProgramSignals:"); |
2399 | p = packet + strlen (packet); | |
2400 | for (i = 0; i < numsigs; i++) | |
2401 | { | |
2402 | if (signal_pass_state (i)) | |
2403 | { | |
2404 | if (i >= 16) | |
2405 | *p++ = tohex (i >> 4); | |
2406 | *p++ = tohex (i & 15); | |
2407 | if (count) | |
2408 | *p++ = ';'; | |
2409 | else | |
2410 | break; | |
2411 | count--; | |
2412 | } | |
2413 | } | |
2414 | *p = 0; | |
5e4a05c4 TT |
2415 | if (!rs->last_program_signals_packet |
2416 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2417 | { |
9b224c5e PA |
2418 | putpkt (packet); |
2419 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2420 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2421 | xfree (rs->last_program_signals_packet); |
2422 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2423 | } |
2424 | else | |
2425 | xfree (packet); | |
2426 | } | |
2427 | } | |
2428 | ||
79d7f229 PA |
2429 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2430 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2431 | thread. If GEN is set, set the general thread, if not, then set | |
2432 | the step/continue thread. */ | |
c906108c | 2433 | static void |
d62a8ae2 | 2434 | set_thread (ptid_t ptid, int gen) |
c906108c | 2435 | { |
d01949b6 | 2436 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2437 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2438 | char *buf = rs->buf; |
79d7f229 | 2439 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2440 | |
79d7f229 | 2441 | if (ptid_equal (state, ptid)) |
c906108c SS |
2442 | return; |
2443 | ||
79d7f229 PA |
2444 | *buf++ = 'H'; |
2445 | *buf++ = gen ? 'g' : 'c'; | |
2446 | if (ptid_equal (ptid, magic_null_ptid)) | |
2447 | xsnprintf (buf, endbuf - buf, "0"); | |
2448 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2449 | xsnprintf (buf, endbuf - buf, "0"); | |
2450 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2451 | xsnprintf (buf, endbuf - buf, "-1"); | |
2452 | else | |
82f73884 | 2453 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2454 | putpkt (rs->buf); |
6d820c5c | 2455 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2456 | if (gen) |
47f8a51d | 2457 | rs->general_thread = ptid; |
c906108c | 2458 | else |
47f8a51d | 2459 | rs->continue_thread = ptid; |
c906108c | 2460 | } |
79d7f229 PA |
2461 | |
2462 | static void | |
d62a8ae2 | 2463 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2464 | { |
2465 | set_thread (ptid, 1); | |
2466 | } | |
2467 | ||
2468 | static void | |
d62a8ae2 | 2469 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2470 | { |
2471 | set_thread (ptid, 0); | |
2472 | } | |
2473 | ||
3c9c4b83 PA |
2474 | /* Change the remote current process. Which thread within the process |
2475 | ends up selected isn't important, as long as it is the same process | |
2476 | as what INFERIOR_PTID points to. | |
2477 | ||
2478 | This comes from that fact that there is no explicit notion of | |
2479 | "selected process" in the protocol. The selected process for | |
2480 | general operations is the process the selected general thread | |
2481 | belongs to. */ | |
2482 | ||
2483 | static void | |
2484 | set_general_process (void) | |
2485 | { | |
2486 | struct remote_state *rs = get_remote_state (); | |
2487 | ||
2488 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2489 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2490 | return; |
2491 | ||
2492 | /* We only need to change the remote current thread if it's pointing | |
2493 | at some other process. */ | |
47f8a51d | 2494 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2495 | set_general_thread (inferior_ptid); |
2496 | } | |
2497 | ||
c906108c | 2498 | \f |
7d1a114c PA |
2499 | /* Return nonzero if this is the main thread that we made up ourselves |
2500 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2501 | |
2502 | static int | |
f6ac5f3d | 2503 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2504 | { |
c0a2216e PA |
2505 | if (ptid_equal (ptid, magic_null_ptid)) |
2506 | /* The main thread is always alive. */ | |
2507 | return 1; | |
2508 | ||
ba348170 | 2509 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2510 | /* The main thread is always alive. This can happen after a |
2511 | vAttach, if the remote side doesn't support | |
2512 | multi-threading. */ | |
2513 | return 1; | |
2514 | ||
7d1a114c PA |
2515 | return 0; |
2516 | } | |
2517 | ||
2518 | /* Return nonzero if the thread PTID is still alive on the remote | |
2519 | system. */ | |
2520 | ||
f6ac5f3d PA |
2521 | int |
2522 | remote_target::thread_alive (ptid_t ptid) | |
7d1a114c PA |
2523 | { |
2524 | struct remote_state *rs = get_remote_state (); | |
2525 | char *p, *endp; | |
2526 | ||
2527 | /* Check if this is a thread that we made up ourselves to model | |
2528 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2529 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2530 | return 1; |
2531 | ||
82f73884 PA |
2532 | p = rs->buf; |
2533 | endp = rs->buf + get_remote_packet_size (); | |
2534 | ||
2535 | *p++ = 'T'; | |
2536 | write_ptid (p, endp, ptid); | |
2537 | ||
2e9f7625 | 2538 | putpkt (rs->buf); |
6d820c5c | 2539 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2540 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2541 | } |
2542 | ||
79efa585 SM |
2543 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2544 | The thread_info object owns the memory for the name. */ | |
2545 | ||
f6ac5f3d PA |
2546 | const char * |
2547 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2548 | { |
2549 | if (info->priv != NULL) | |
a9334058 SM |
2550 | { |
2551 | const std::string &name = get_remote_thread_info (info)->name; | |
2552 | return !name.empty () ? name.c_str () : NULL; | |
2553 | } | |
79efa585 SM |
2554 | |
2555 | return NULL; | |
2556 | } | |
2557 | ||
c906108c SS |
2558 | /* About these extended threadlist and threadinfo packets. They are |
2559 | variable length packets but, the fields within them are often fixed | |
2560 | length. They are redundent enough to send over UDP as is the | |
2561 | remote protocol in general. There is a matching unit test module | |
2562 | in libstub. */ | |
2563 | ||
23860348 | 2564 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2565 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2566 | changable. */ |
cce74817 JM |
2567 | |
2568 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2569 | Plan to fix this. */ |
cce74817 | 2570 | |
23860348 | 2571 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2572 | |
9d1f7ab2 | 2573 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2574 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2575 | |
2576 | struct gdb_ext_thread_info | |
c5aa993b | 2577 | { |
23860348 | 2578 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2579 | int active; /* Has state interesting to GDB? |
23860348 | 2580 | regs, stack. */ |
2bc416ba | 2581 | char display[256]; /* Brief state display, name, |
cedea757 | 2582 | blocked/suspended. */ |
23860348 | 2583 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2584 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2585 | whatever. */ |
c5aa993b | 2586 | }; |
cce74817 JM |
2587 | |
2588 | /* The volume of remote transfers can be limited by submitting | |
2589 | a mask containing bits specifying the desired information. | |
2590 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2591 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2592 | |
2593 | #define TAG_THREADID 1 | |
2594 | #define TAG_EXISTS 2 | |
2595 | #define TAG_DISPLAY 4 | |
2596 | #define TAG_THREADNAME 8 | |
c5aa993b | 2597 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2598 | |
23860348 | 2599 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2600 | |
a14ed312 | 2601 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2602 | |
a14ed312 | 2603 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2604 | |
a14ed312 | 2605 | static char *pack_int (char *buf, int value); |
cce74817 | 2606 | |
a14ed312 | 2607 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2608 | |
a14ed312 | 2609 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2610 | |
23860348 | 2611 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2612 | |
23860348 | 2613 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2614 | |
23860348 | 2615 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2616 | |
23860348 | 2617 | static int threadref_to_int (threadref *ref); |
cce74817 | 2618 | |
23860348 | 2619 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2620 | |
23860348 | 2621 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2622 | |
2bc416ba | 2623 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2624 | threadref *id); |
cce74817 | 2625 | |
a14ed312 | 2626 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2627 | threadref *expectedref, |
a14ed312 KB |
2628 | struct gdb_ext_thread_info |
2629 | *info); | |
cce74817 JM |
2630 | |
2631 | ||
2bc416ba | 2632 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2633 | int fieldset, /*TAG mask */ |
a14ed312 | 2634 | struct gdb_ext_thread_info *info); |
cce74817 | 2635 | |
a14ed312 KB |
2636 | static char *pack_threadlist_request (char *pkt, int startflag, |
2637 | int threadcount, | |
23860348 | 2638 | threadref *nextthread); |
cce74817 | 2639 | |
a14ed312 KB |
2640 | static int parse_threadlist_response (char *pkt, |
2641 | int result_limit, | |
23860348 | 2642 | threadref *original_echo, |
2bc416ba | 2643 | threadref *resultlist, |
23860348 | 2644 | int *doneflag); |
cce74817 | 2645 | |
a14ed312 | 2646 | static int remote_get_threadlist (int startflag, |
23860348 | 2647 | threadref *nextthread, |
a14ed312 KB |
2648 | int result_limit, |
2649 | int *done, | |
2bc416ba | 2650 | int *result_count, |
23860348 | 2651 | threadref *threadlist); |
cce74817 | 2652 | |
23860348 | 2653 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2654 | |
a14ed312 KB |
2655 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2656 | void *context, int looplimit); | |
cce74817 | 2657 | |
23860348 | 2658 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2659 | |
82f73884 PA |
2660 | |
2661 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2662 | buffer we're allowed to write to. Returns | |
2663 | BUF+CHARACTERS_WRITTEN. */ | |
2664 | ||
2665 | static char * | |
2666 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2667 | { | |
2668 | int pid, tid; | |
2669 | struct remote_state *rs = get_remote_state (); | |
2670 | ||
2671 | if (remote_multi_process_p (rs)) | |
2672 | { | |
2673 | pid = ptid_get_pid (ptid); | |
2674 | if (pid < 0) | |
2675 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2676 | else | |
2677 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2678 | } | |
ba348170 | 2679 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2680 | if (tid < 0) |
2681 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2682 | else | |
2683 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2684 | ||
2685 | return buf; | |
2686 | } | |
2687 | ||
256642e8 PA |
2688 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2689 | last parsed char. Returns null_ptid if no thread id is found, and | |
2690 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2691 | |
2692 | static ptid_t | |
256642e8 | 2693 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2694 | { |
256642e8 PA |
2695 | const char *p = buf; |
2696 | const char *pp; | |
82f73884 | 2697 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2698 | |
2699 | if (*p == 'p') | |
2700 | { | |
2701 | /* Multi-process ptid. */ | |
2702 | pp = unpack_varlen_hex (p + 1, &pid); | |
2703 | if (*pp != '.') | |
b37520b6 | 2704 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2705 | |
2706 | p = pp; | |
2707 | pp = unpack_varlen_hex (p + 1, &tid); | |
2708 | if (obuf) | |
2709 | *obuf = pp; | |
ba348170 | 2710 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2711 | } |
2712 | ||
2713 | /* No multi-process. Just a tid. */ | |
2714 | pp = unpack_varlen_hex (p, &tid); | |
2715 | ||
c9f35b34 KB |
2716 | /* Return null_ptid when no thread id is found. */ |
2717 | if (p == pp) | |
2718 | { | |
2719 | if (obuf) | |
2720 | *obuf = pp; | |
2721 | return null_ptid; | |
2722 | } | |
2723 | ||
82f73884 | 2724 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2725 | what's in inferior_ptid, unless it's null at this point. If so, |
2726 | then since there's no way to know the pid of the reported | |
2727 | threads, use the magic number. */ | |
2728 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2729 | pid = ptid_get_pid (magic_null_ptid); | |
2730 | else | |
2731 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2732 | |
2733 | if (obuf) | |
2734 | *obuf = pp; | |
ba348170 | 2735 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2736 | } |
2737 | ||
c906108c | 2738 | static int |
fba45db2 | 2739 | stubhex (int ch) |
c906108c SS |
2740 | { |
2741 | if (ch >= 'a' && ch <= 'f') | |
2742 | return ch - 'a' + 10; | |
2743 | if (ch >= '0' && ch <= '9') | |
2744 | return ch - '0'; | |
2745 | if (ch >= 'A' && ch <= 'F') | |
2746 | return ch - 'A' + 10; | |
2747 | return -1; | |
2748 | } | |
2749 | ||
2750 | static int | |
fba45db2 | 2751 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2752 | { |
2753 | int nibble; | |
2754 | int retval = 0; | |
2755 | ||
2756 | while (fieldlength) | |
2757 | { | |
2758 | nibble = stubhex (*buff++); | |
2759 | retval |= nibble; | |
2760 | fieldlength--; | |
2761 | if (fieldlength) | |
2762 | retval = retval << 4; | |
2763 | } | |
2764 | return retval; | |
2765 | } | |
2766 | ||
c906108c | 2767 | static char * |
fba45db2 | 2768 | unpack_nibble (char *buf, int *val) |
c906108c | 2769 | { |
b7589f7d | 2770 | *val = fromhex (*buf++); |
c906108c SS |
2771 | return buf; |
2772 | } | |
2773 | ||
c906108c | 2774 | static char * |
fba45db2 | 2775 | unpack_byte (char *buf, int *value) |
c906108c SS |
2776 | { |
2777 | *value = stub_unpack_int (buf, 2); | |
2778 | return buf + 2; | |
2779 | } | |
2780 | ||
2781 | static char * | |
fba45db2 | 2782 | pack_int (char *buf, int value) |
c906108c SS |
2783 | { |
2784 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2785 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2786 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2787 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2788 | return buf; | |
2789 | } | |
2790 | ||
2791 | static char * | |
fba45db2 | 2792 | unpack_int (char *buf, int *value) |
c906108c SS |
2793 | { |
2794 | *value = stub_unpack_int (buf, 8); | |
2795 | return buf + 8; | |
2796 | } | |
2797 | ||
23860348 | 2798 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2799 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2800 | |
2801 | static char * | |
fba45db2 | 2802 | pack_string (char *pkt, char *string) |
c906108c SS |
2803 | { |
2804 | char ch; | |
2805 | int len; | |
2806 | ||
2807 | len = strlen (string); | |
2808 | if (len > 200) | |
23860348 | 2809 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2810 | pkt = pack_hex_byte (pkt, len); |
2811 | while (len-- > 0) | |
2812 | { | |
2813 | ch = *string++; | |
2814 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2815 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2816 | *pkt++ = ch; |
2817 | } | |
2818 | return pkt; | |
2819 | } | |
2820 | #endif /* 0 (unused) */ | |
2821 | ||
2822 | static char * | |
fba45db2 | 2823 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2824 | { |
2825 | while (length--) | |
2826 | *dest++ = *src++; | |
2827 | *dest = '\0'; | |
2828 | return src; | |
2829 | } | |
2830 | ||
2831 | static char * | |
fba45db2 | 2832 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2833 | { |
2834 | char *limit; | |
2835 | unsigned char *altid; | |
2836 | ||
2837 | altid = (unsigned char *) id; | |
2838 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2839 | while (pkt < limit) | |
2840 | pkt = pack_hex_byte (pkt, *altid++); | |
2841 | return pkt; | |
2842 | } | |
2843 | ||
2844 | ||
2845 | static char * | |
fba45db2 | 2846 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2847 | { |
2848 | char *altref; | |
2849 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2850 | int x, y; | |
2851 | ||
2852 | altref = (char *) id; | |
2853 | ||
2854 | while (inbuf < limit) | |
2855 | { | |
2856 | x = stubhex (*inbuf++); | |
2857 | y = stubhex (*inbuf++); | |
2858 | *altref++ = (x << 4) | y; | |
2859 | } | |
2860 | return inbuf; | |
2861 | } | |
2862 | ||
2863 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2864 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2865 | to use 64bit thread references internally. This is an adapter |
2866 | function. */ | |
2867 | ||
2868 | void | |
fba45db2 | 2869 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2870 | { |
2871 | unsigned char *scan; | |
2872 | ||
2873 | scan = (unsigned char *) id; | |
2874 | { | |
2875 | int i = 4; | |
2876 | while (i--) | |
2877 | *scan++ = 0; | |
2878 | } | |
2879 | *scan++ = (value >> 24) & 0xff; | |
2880 | *scan++ = (value >> 16) & 0xff; | |
2881 | *scan++ = (value >> 8) & 0xff; | |
2882 | *scan++ = (value & 0xff); | |
2883 | } | |
2884 | ||
2885 | static int | |
fba45db2 | 2886 | threadref_to_int (threadref *ref) |
c906108c SS |
2887 | { |
2888 | int i, value = 0; | |
2889 | unsigned char *scan; | |
2890 | ||
cfd77fa1 | 2891 | scan = *ref; |
c906108c SS |
2892 | scan += 4; |
2893 | i = 4; | |
2894 | while (i-- > 0) | |
2895 | value = (value << 8) | ((*scan++) & 0xff); | |
2896 | return value; | |
2897 | } | |
2898 | ||
2899 | static void | |
fba45db2 | 2900 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2901 | { |
2902 | int i; | |
2903 | unsigned char *csrc, *cdest; | |
2904 | ||
2905 | csrc = (unsigned char *) src; | |
2906 | cdest = (unsigned char *) dest; | |
2907 | i = 8; | |
2908 | while (i--) | |
2909 | *cdest++ = *csrc++; | |
2910 | } | |
2911 | ||
2912 | static int | |
fba45db2 | 2913 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2914 | { |
23860348 | 2915 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2916 | #if 0 |
2917 | unsigned char *srcp, *destp; | |
2918 | int i, result; | |
2919 | srcp = (char *) src; | |
2920 | destp = (char *) dest; | |
2921 | ||
2922 | result = 1; | |
2923 | while (i-- > 0) | |
2924 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2925 | return result; | |
2926 | #endif | |
2927 | return 1; | |
2928 | } | |
2929 | ||
2930 | /* | |
c5aa993b JM |
2931 | threadid:1, # always request threadid |
2932 | context_exists:2, | |
2933 | display:4, | |
2934 | unique_name:8, | |
2935 | more_display:16 | |
2936 | */ | |
c906108c SS |
2937 | |
2938 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2939 | ||
2940 | static char * | |
fba45db2 | 2941 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2942 | { |
23860348 MS |
2943 | *pkt++ = 'q'; /* Info Query */ |
2944 | *pkt++ = 'P'; /* process or thread info */ | |
2945 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2946 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2947 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2948 | return pkt; |
2949 | } | |
2950 | ||
23860348 | 2951 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2952 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2953 | add more fields as time goes by. */ |
c906108c | 2954 | |
23860348 | 2955 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2956 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2957 | fetch registers and its stack? */ |
c5aa993b | 2958 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2959 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2960 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2961 | the process. */ |
c906108c SS |
2962 | |
2963 | static int | |
fba45db2 KB |
2964 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2965 | struct gdb_ext_thread_info *info) | |
c906108c | 2966 | { |
d01949b6 | 2967 | struct remote_state *rs = get_remote_state (); |
c906108c | 2968 | int mask, length; |
cfd77fa1 | 2969 | int tag; |
c906108c | 2970 | threadref ref; |
6d820c5c | 2971 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2972 | int retval = 1; |
2973 | ||
23860348 | 2974 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2975 | info->active = 0; |
2976 | info->display[0] = '\0'; | |
2977 | info->shortname[0] = '\0'; | |
2978 | info->more_display[0] = '\0'; | |
2979 | ||
23860348 MS |
2980 | /* Assume the characters indicating the packet type have been |
2981 | stripped. */ | |
c906108c SS |
2982 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2983 | pkt = unpack_threadid (pkt, &ref); | |
2984 | ||
2985 | if (mask == 0) | |
8a3fe4f8 | 2986 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2987 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2988 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2989 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2990 | return 0; |
2991 | } | |
2992 | copy_threadref (&info->threadid, &ref); | |
2993 | ||
23860348 | 2994 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2995 | |
23860348 MS |
2996 | /* Packets are terminated with nulls. */ |
2997 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2998 | { |
2999 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3000 | pkt = unpack_byte (pkt, &length); /* length */ |
3001 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3002 | { |
8a3fe4f8 | 3003 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3004 | retval = 0; |
3005 | break; | |
3006 | } | |
3007 | if (tag == TAG_THREADID) | |
3008 | { | |
3009 | if (length != 16) | |
3010 | { | |
8a3fe4f8 | 3011 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3012 | retval = 0; |
3013 | break; | |
3014 | } | |
3015 | pkt = unpack_threadid (pkt, &ref); | |
3016 | mask = mask & ~TAG_THREADID; | |
3017 | continue; | |
3018 | } | |
3019 | if (tag == TAG_EXISTS) | |
3020 | { | |
3021 | info->active = stub_unpack_int (pkt, length); | |
3022 | pkt += length; | |
3023 | mask = mask & ~(TAG_EXISTS); | |
3024 | if (length > 8) | |
3025 | { | |
8a3fe4f8 | 3026 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3027 | retval = 0; |
3028 | break; | |
3029 | } | |
3030 | continue; | |
3031 | } | |
3032 | if (tag == TAG_THREADNAME) | |
3033 | { | |
3034 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3035 | mask = mask & ~TAG_THREADNAME; | |
3036 | continue; | |
3037 | } | |
3038 | if (tag == TAG_DISPLAY) | |
3039 | { | |
3040 | pkt = unpack_string (pkt, &info->display[0], length); | |
3041 | mask = mask & ~TAG_DISPLAY; | |
3042 | continue; | |
3043 | } | |
3044 | if (tag == TAG_MOREDISPLAY) | |
3045 | { | |
3046 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3047 | mask = mask & ~TAG_MOREDISPLAY; | |
3048 | continue; | |
3049 | } | |
8a3fe4f8 | 3050 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3051 | break; /* Not a tag we know about. */ |
c906108c SS |
3052 | } |
3053 | return retval; | |
3054 | } | |
3055 | ||
3056 | static int | |
fba45db2 KB |
3057 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
3058 | struct gdb_ext_thread_info *info) | |
c906108c | 3059 | { |
d01949b6 | 3060 | struct remote_state *rs = get_remote_state (); |
c906108c | 3061 | int result; |
c906108c | 3062 | |
2e9f7625 DJ |
3063 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
3064 | putpkt (rs->buf); | |
6d820c5c | 3065 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
3066 | |
3067 | if (rs->buf[0] == '\0') | |
3068 | return 0; | |
3069 | ||
2e9f7625 | 3070 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 3071 | threadid, info); |
c906108c SS |
3072 | return result; |
3073 | } | |
3074 | ||
c906108c SS |
3075 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3076 | ||
3077 | static char * | |
fba45db2 KB |
3078 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3079 | threadref *nextthread) | |
c906108c SS |
3080 | { |
3081 | *pkt++ = 'q'; /* info query packet */ | |
3082 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3083 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3084 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3085 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3086 | *pkt = '\0'; | |
3087 | return pkt; | |
3088 | } | |
3089 | ||
3090 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3091 | ||
3092 | static int | |
fba45db2 KB |
3093 | parse_threadlist_response (char *pkt, int result_limit, |
3094 | threadref *original_echo, threadref *resultlist, | |
3095 | int *doneflag) | |
c906108c | 3096 | { |
d01949b6 | 3097 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3098 | char *limit; |
3099 | int count, resultcount, done; | |
3100 | ||
3101 | resultcount = 0; | |
3102 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 3103 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 3104 | /* done parse past here */ |
c906108c SS |
3105 | pkt = unpack_byte (pkt, &count); /* count field */ |
3106 | pkt = unpack_nibble (pkt, &done); | |
3107 | /* The first threadid is the argument threadid. */ | |
3108 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3109 | while ((count-- > 0) && (pkt < limit)) | |
3110 | { | |
3111 | pkt = unpack_threadid (pkt, resultlist++); | |
3112 | if (resultcount++ >= result_limit) | |
3113 | break; | |
3114 | } | |
3115 | if (doneflag) | |
3116 | *doneflag = done; | |
3117 | return resultcount; | |
3118 | } | |
3119 | ||
6dc54d91 PA |
3120 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3121 | qL packet is not supported, 0 on error and 1 on success. */ | |
3122 | ||
c906108c | 3123 | static int |
fba45db2 KB |
3124 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
3125 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 3126 | { |
d01949b6 | 3127 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3128 | int result = 1; |
3129 | ||
23860348 | 3130 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3131 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3132 | >= get_remote_packet_size ()) | |
ea9c271d | 3133 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3134 | |
6d820c5c DJ |
3135 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
3136 | putpkt (rs->buf); | |
3137 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 3138 | if (*rs->buf == '\0') |
6dc54d91 PA |
3139 | { |
3140 | /* Packet not supported. */ | |
3141 | return -1; | |
3142 | } | |
3143 | ||
3144 | *result_count = | |
3145 | parse_threadlist_response (rs->buf + 2, result_limit, | |
3146 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 3147 | |
0d031856 | 3148 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3149 | { |
23860348 MS |
3150 | /* FIXME: This is a good reason to drop the packet. */ |
3151 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
3152 | /* Possabilities : |
3153 | retransmit immediatly - race conditions | |
3154 | retransmit after timeout - yes | |
3155 | exit | |
3156 | wait for packet, then exit | |
3157 | */ | |
8a3fe4f8 | 3158 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3159 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3160 | } |
3161 | if (*result_count <= 0) | |
3162 | { | |
3163 | if (*done != 1) | |
3164 | { | |
8a3fe4f8 | 3165 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3166 | result = 0; |
3167 | } | |
3168 | return result; /* break; */ | |
3169 | } | |
3170 | if (*result_count > result_limit) | |
3171 | { | |
3172 | *result_count = 0; | |
8a3fe4f8 | 3173 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3174 | return 0; |
3175 | } | |
3176 | return result; | |
3177 | } | |
3178 | ||
6dc54d91 PA |
3179 | /* Fetch the list of remote threads, with the qL packet, and call |
3180 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3181 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3182 | STEPFUNCTION returns false. If the packet is not supported, | |
3183 | returns -1. */ | |
c906108c | 3184 | |
c906108c | 3185 | static int |
fba45db2 KB |
3186 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
3187 | int looplimit) | |
c906108c | 3188 | { |
0d031856 | 3189 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3190 | int done, i, result_count; |
3191 | int startflag = 1; | |
3192 | int result = 1; | |
3193 | int loopcount = 0; | |
c906108c SS |
3194 | |
3195 | done = 0; | |
3196 | while (!done) | |
3197 | { | |
3198 | if (loopcount++ > looplimit) | |
3199 | { | |
3200 | result = 0; | |
8a3fe4f8 | 3201 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3202 | break; |
3203 | } | |
6dc54d91 PA |
3204 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3205 | MAXTHREADLISTRESULTS, | |
3206 | &done, &result_count, | |
3207 | rs->resultthreadlist); | |
3208 | if (result <= 0) | |
3209 | break; | |
23860348 | 3210 | /* Clear for later iterations. */ |
c906108c SS |
3211 | startflag = 0; |
3212 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3213 | if (result_count >= 1) | |
0d031856 TT |
3214 | copy_threadref (&rs->nextthread, |
3215 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3216 | i = 0; |
3217 | while (result_count--) | |
6dc54d91 PA |
3218 | { |
3219 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3220 | { | |
3221 | result = 0; | |
3222 | break; | |
3223 | } | |
3224 | } | |
c906108c SS |
3225 | } |
3226 | return result; | |
3227 | } | |
3228 | ||
6dc54d91 PA |
3229 | /* A thread found on the remote target. */ |
3230 | ||
21fe1c75 | 3231 | struct thread_item |
6dc54d91 | 3232 | { |
21fe1c75 SM |
3233 | explicit thread_item (ptid_t ptid_) |
3234 | : ptid (ptid_) | |
3235 | {} | |
3236 | ||
3237 | thread_item (thread_item &&other) = default; | |
3238 | thread_item &operator= (thread_item &&other) = default; | |
3239 | ||
3240 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3241 | ||
6dc54d91 PA |
3242 | /* The thread's PTID. */ |
3243 | ptid_t ptid; | |
3244 | ||
21fe1c75 SM |
3245 | /* The thread's extra info. */ |
3246 | std::string extra; | |
6dc54d91 | 3247 | |
21fe1c75 SM |
3248 | /* The thread's name. */ |
3249 | std::string name; | |
79efa585 | 3250 | |
6dc54d91 | 3251 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3252 | int core = -1; |
f6327dcb KB |
3253 | |
3254 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3255 | gdb::byte_vector thread_handle; |
21fe1c75 | 3256 | }; |
6dc54d91 PA |
3257 | |
3258 | /* Context passed around to the various methods listing remote | |
3259 | threads. As new threads are found, they're added to the ITEMS | |
3260 | vector. */ | |
3261 | ||
3262 | struct threads_listing_context | |
3263 | { | |
21fe1c75 SM |
3264 | /* Return true if this object contains an entry for a thread with ptid |
3265 | PTID. */ | |
6dc54d91 | 3266 | |
21fe1c75 SM |
3267 | bool contains_thread (ptid_t ptid) const |
3268 | { | |
3269 | auto match_ptid = [&] (const thread_item &item) | |
3270 | { | |
3271 | return item.ptid == ptid; | |
3272 | }; | |
80134cf5 | 3273 | |
21fe1c75 SM |
3274 | auto it = std::find_if (this->items.begin (), |
3275 | this->items.end (), | |
3276 | match_ptid); | |
80134cf5 | 3277 | |
21fe1c75 SM |
3278 | return it != this->items.end (); |
3279 | } | |
80134cf5 | 3280 | |
21fe1c75 | 3281 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3282 | |
21fe1c75 SM |
3283 | void remove_thread (ptid_t ptid) |
3284 | { | |
3285 | auto match_ptid = [&] (const thread_item &item) | |
3286 | { | |
3287 | return item.ptid == ptid; | |
3288 | }; | |
cbb8991c | 3289 | |
21fe1c75 SM |
3290 | auto it = std::remove_if (this->items.begin (), |
3291 | this->items.end (), | |
3292 | match_ptid); | |
cbb8991c | 3293 | |
21fe1c75 SM |
3294 | if (it != this->items.end ()) |
3295 | this->items.erase (it); | |
3296 | } | |
3297 | ||
3298 | /* The threads found on the remote target. */ | |
3299 | std::vector<thread_item> items; | |
3300 | }; | |
cbb8991c | 3301 | |
c906108c | 3302 | static int |
6dc54d91 | 3303 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3304 | { |
19ba03f4 SM |
3305 | struct threads_listing_context *context |
3306 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3307 | int pid = inferior_ptid.pid (); |
3308 | int lwp = threadref_to_int (ref); | |
3309 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3310 | |
21fe1c75 | 3311 | context->items.emplace_back (ptid); |
6dc54d91 | 3312 | |
c906108c SS |
3313 | return 1; /* continue iterator */ |
3314 | } | |
3315 | ||
3316 | #define CRAZY_MAX_THREADS 1000 | |
3317 | ||
39f77062 KB |
3318 | static ptid_t |
3319 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3320 | { |
d01949b6 | 3321 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3322 | |
3323 | putpkt ("qC"); | |
6d820c5c | 3324 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3325 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3326 | { |
256642e8 | 3327 | const char *obuf; |
c9f35b34 KB |
3328 | ptid_t result; |
3329 | ||
3330 | result = read_ptid (&rs->buf[2], &obuf); | |
3331 | if (*obuf != '\0' && remote_debug) | |
3332 | fprintf_unfiltered (gdb_stdlog, | |
3333 | "warning: garbage in qC reply\n"); | |
3334 | ||
3335 | return result; | |
3336 | } | |
c906108c SS |
3337 | else |
3338 | return oldpid; | |
3339 | } | |
3340 | ||
6dc54d91 | 3341 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3342 | |
6dc54d91 PA |
3343 | static int |
3344 | remote_get_threads_with_ql (struct target_ops *ops, | |
3345 | struct threads_listing_context *context) | |
c906108c | 3346 | { |
6dc54d91 PA |
3347 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3348 | CRAZY_MAX_THREADS) >= 0) | |
3349 | return 1; | |
3350 | ||
3351 | return 0; | |
c906108c SS |
3352 | } |
3353 | ||
dc146f7c VP |
3354 | #if defined(HAVE_LIBEXPAT) |
3355 | ||
dc146f7c VP |
3356 | static void |
3357 | start_thread (struct gdb_xml_parser *parser, | |
3358 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3359 | void *user_data, |
3360 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3361 | { |
19ba03f4 SM |
3362 | struct threads_listing_context *data |
3363 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3364 | struct gdb_xml_value *attr; |
dc146f7c | 3365 | |
4d0fdd9b | 3366 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3367 | ptid_t ptid = read_ptid (id, NULL); |
3368 | ||
3369 | data->items.emplace_back (ptid); | |
3370 | thread_item &item = data->items.back (); | |
dc146f7c | 3371 | |
3d2c1d41 PA |
3372 | attr = xml_find_attribute (attributes, "core"); |
3373 | if (attr != NULL) | |
4d0fdd9b | 3374 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3375 | |
79efa585 | 3376 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3377 | if (attr != NULL) |
4d0fdd9b | 3378 | item.name = (const char *) attr->value.get (); |
79efa585 | 3379 | |
f6327dcb KB |
3380 | attr = xml_find_attribute (attributes, "handle"); |
3381 | if (attr != NULL) | |
4d0fdd9b | 3382 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3383 | } |
3384 | ||
3385 | static void | |
3386 | end_thread (struct gdb_xml_parser *parser, | |
3387 | const struct gdb_xml_element *element, | |
3388 | void *user_data, const char *body_text) | |
3389 | { | |
19ba03f4 SM |
3390 | struct threads_listing_context *data |
3391 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3392 | |
21fe1c75 SM |
3393 | if (body_text != NULL && *body_text != '\0') |
3394 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3395 | } |
3396 | ||
3397 | const struct gdb_xml_attribute thread_attributes[] = { | |
3398 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3399 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3400 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3401 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3402 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3403 | }; | |
3404 | ||
3405 | const struct gdb_xml_element thread_children[] = { | |
3406 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3407 | }; | |
3408 | ||
3409 | const struct gdb_xml_element threads_children[] = { | |
3410 | { "thread", thread_attributes, thread_children, | |
3411 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3412 | start_thread, end_thread }, | |
3413 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3414 | }; | |
3415 | ||
3416 | const struct gdb_xml_element threads_elements[] = { | |
3417 | { "threads", NULL, threads_children, | |
3418 | GDB_XML_EF_NONE, NULL, NULL }, | |
3419 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3420 | }; | |
3421 | ||
3422 | #endif | |
3423 | ||
6dc54d91 | 3424 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3425 | |
6dc54d91 PA |
3426 | static int |
3427 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3428 | struct threads_listing_context *context) | |
0f71a2f6 | 3429 | { |
dc146f7c | 3430 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3431 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3432 | { |
9018be22 | 3433 | gdb::optional<gdb::char_vector> xml |
b7b030ad | 3434 | = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3435 | |
9018be22 | 3436 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3437 | { |
6dc54d91 | 3438 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3439 | threads_elements, xml->data (), context); |
dc146f7c VP |
3440 | } |
3441 | ||
6dc54d91 | 3442 | return 1; |
dc146f7c VP |
3443 | } |
3444 | #endif | |
3445 | ||
6dc54d91 PA |
3446 | return 0; |
3447 | } | |
3448 | ||
3449 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3450 | ||
3451 | static int | |
3452 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3453 | struct threads_listing_context *context) | |
3454 | { | |
3455 | struct remote_state *rs = get_remote_state (); | |
3456 | ||
b80fafe3 | 3457 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3458 | { |
256642e8 | 3459 | const char *bufp; |
6dc54d91 | 3460 | |
9d1f7ab2 | 3461 | putpkt ("qfThreadInfo"); |
6d820c5c | 3462 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3463 | bufp = rs->buf; |
9d1f7ab2 | 3464 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3465 | { |
9d1f7ab2 MS |
3466 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3467 | { | |
3468 | do | |
3469 | { | |
21fe1c75 SM |
3470 | ptid_t ptid = read_ptid (bufp, &bufp); |
3471 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3472 | } |
3473 | while (*bufp++ == ','); /* comma-separated list */ | |
3474 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3475 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3476 | bufp = rs->buf; |
9d1f7ab2 | 3477 | } |
6dc54d91 PA |
3478 | return 1; |
3479 | } | |
3480 | else | |
3481 | { | |
3482 | /* Packet not recognized. */ | |
3483 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3484 | } |
3485 | } | |
3486 | ||
6dc54d91 PA |
3487 | return 0; |
3488 | } | |
3489 | ||
e8032dde | 3490 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3491 | targets. */ |
3492 | ||
f6ac5f3d PA |
3493 | void |
3494 | remote_target::update_thread_list () | |
6dc54d91 | 3495 | { |
6dc54d91 | 3496 | struct threads_listing_context context; |
ab970af1 | 3497 | int got_list = 0; |
e8032dde | 3498 | |
6dc54d91 PA |
3499 | /* We have a few different mechanisms to fetch the thread list. Try |
3500 | them all, starting with the most preferred one first, falling | |
3501 | back to older methods. */ | |
f6ac5f3d PA |
3502 | if (remote_get_threads_with_qxfer (this, &context) |
3503 | || remote_get_threads_with_qthreadinfo (this, &context) | |
3504 | || remote_get_threads_with_ql (this, &context)) | |
6dc54d91 | 3505 | { |
ab970af1 PA |
3506 | struct thread_info *tp, *tmp; |
3507 | ||
3508 | got_list = 1; | |
3509 | ||
21fe1c75 | 3510 | if (context.items.empty () |
f6ac5f3d | 3511 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3512 | { |
3513 | /* Some targets don't really support threads, but still | |
3514 | reply an (empty) thread list in response to the thread | |
3515 | listing packets, instead of replying "packet not | |
3516 | supported". Exit early so we don't delete the main | |
3517 | thread. */ | |
7d1a114c PA |
3518 | return; |
3519 | } | |
3520 | ||
ab970af1 PA |
3521 | /* CONTEXT now holds the current thread list on the remote |
3522 | target end. Delete GDB-side threads no longer found on the | |
3523 | target. */ | |
8a06aea7 | 3524 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3525 | { |
21fe1c75 | 3526 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3527 | { |
3528 | /* Not found. */ | |
3529 | delete_thread (tp->ptid); | |
3530 | } | |
cbb8991c DB |
3531 | } |
3532 | ||
3533 | /* Remove any unreported fork child threads from CONTEXT so | |
3534 | that we don't interfere with follow fork, which is where | |
3535 | creation of such threads is handled. */ | |
3536 | remove_new_fork_children (&context); | |
74531fed | 3537 | |
ab970af1 | 3538 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3539 | for (thread_item &item : context.items) |
6dc54d91 | 3540 | { |
21fe1c75 | 3541 | if (item.ptid != null_ptid) |
6dc54d91 | 3542 | { |
6dc54d91 | 3543 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3544 | executing until proven otherwise with a stop reply. |
3545 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3546 | stopped. */ |
0d5b594f | 3547 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3548 | |
21fe1c75 | 3549 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3550 | |
7aabaf9d | 3551 | remote_thread_info *info = get_remote_thread_info (item.ptid); |
21fe1c75 | 3552 | info->core = item.core; |
7aabaf9d SM |
3553 | info->extra = std::move (item.extra); |
3554 | info->name = std::move (item.name); | |
3555 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3556 | } |
3557 | } | |
3558 | } | |
3559 | ||
ab970af1 PA |
3560 | if (!got_list) |
3561 | { | |
3562 | /* If no thread listing method is supported, then query whether | |
3563 | each known thread is alive, one by one, with the T packet. | |
3564 | If the target doesn't support threads at all, then this is a | |
3565 | no-op. See remote_thread_alive. */ | |
3566 | prune_threads (); | |
3567 | } | |
9d1f7ab2 MS |
3568 | } |
3569 | ||
802188a7 | 3570 | /* |
9d1f7ab2 MS |
3571 | * Collect a descriptive string about the given thread. |
3572 | * The target may say anything it wants to about the thread | |
3573 | * (typically info about its blocked / runnable state, name, etc.). | |
3574 | * This string will appear in the info threads display. | |
802188a7 | 3575 | * |
9d1f7ab2 MS |
3576 | * Optional: targets are not required to implement this function. |
3577 | */ | |
3578 | ||
f6ac5f3d PA |
3579 | const char * |
3580 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3581 | { |
d01949b6 | 3582 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3583 | int result; |
3584 | int set; | |
3585 | threadref id; | |
3586 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3587 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3588 | int n = 0; /* position in display_buf */ |
3589 | ||
5d93a237 | 3590 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3591 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3592 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3593 | |
60e569b9 | 3594 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3595 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3596 | /* This is the main thread which was added by GDB. The remote |
3597 | server doesn't know about it. */ | |
3598 | return NULL; | |
3599 | ||
4082afcc | 3600 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3601 | { |
3602 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3603 | |
7aabaf9d | 3604 | if (info != NULL && info->priv != NULL) |
a9334058 SM |
3605 | { |
3606 | const std::string &extra = get_remote_thread_info (info)->extra; | |
3607 | return !extra.empty () ? extra.c_str () : NULL; | |
3608 | } | |
dc146f7c VP |
3609 | else |
3610 | return NULL; | |
3611 | } | |
3612 | ||
b80fafe3 | 3613 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3614 | { |
82f73884 PA |
3615 | char *b = rs->buf; |
3616 | char *endb = rs->buf + get_remote_packet_size (); | |
3617 | ||
3618 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3619 | b += strlen (b); | |
3620 | write_ptid (b, endb, tp->ptid); | |
3621 | ||
2e9f7625 | 3622 | putpkt (rs->buf); |
6d820c5c | 3623 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3624 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3625 | { |
325fac50 | 3626 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3627 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3628 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3629 | return display_buf; |
3630 | } | |
0f71a2f6 | 3631 | } |
9d1f7ab2 MS |
3632 | |
3633 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3634 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3635 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3636 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3637 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3638 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3639 | if (threadinfo.active) | |
0f71a2f6 | 3640 | { |
9d1f7ab2 | 3641 | if (*threadinfo.shortname) |
2bc416ba | 3642 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3643 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3644 | if (*threadinfo.display) |
2bc416ba | 3645 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3646 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3647 | if (*threadinfo.more_display) |
2bc416ba | 3648 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3649 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3650 | |
3651 | if (n > 0) | |
c5aa993b | 3652 | { |
23860348 | 3653 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3654 | if (',' == display_buf[n-1]) |
3655 | display_buf[n-1] = ' '; | |
3656 | return display_buf; | |
c5aa993b | 3657 | } |
0f71a2f6 | 3658 | } |
9d1f7ab2 | 3659 | return NULL; |
0f71a2f6 | 3660 | } |
c906108c | 3661 | \f |
c5aa993b | 3662 | |
f6ac5f3d PA |
3663 | bool |
3664 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3665 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3666 | { |
3667 | struct remote_state *rs = get_remote_state (); | |
3668 | char *p = rs->buf; | |
3669 | ||
bba74b36 | 3670 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3671 | p += strlen (p); |
3672 | p += hexnumstr (p, addr); | |
3673 | putpkt (rs->buf); | |
3674 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3675 | p = rs->buf; | |
3676 | ||
3677 | if (*p == 'E') | |
3678 | error (_("Remote failure reply: %s"), p); | |
3679 | ||
3680 | if (*p++ == 'm') | |
3681 | { | |
256642e8 | 3682 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3683 | return true; |
0fb4aa4b PA |
3684 | } |
3685 | ||
5d9310c4 | 3686 | return false; |
0fb4aa4b PA |
3687 | } |
3688 | ||
f6ac5f3d PA |
3689 | std::vector<static_tracepoint_marker> |
3690 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
3691 | { |
3692 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3693 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3694 | const char *p; |
5d9310c4 | 3695 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3696 | |
3697 | /* Ask for a first packet of static tracepoint marker | |
3698 | definition. */ | |
3699 | putpkt ("qTfSTM"); | |
3700 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3701 | p = rs->buf; | |
3702 | if (*p == 'E') | |
3703 | error (_("Remote failure reply: %s"), p); | |
3704 | ||
0fb4aa4b PA |
3705 | while (*p++ == 'm') |
3706 | { | |
0fb4aa4b PA |
3707 | do |
3708 | { | |
5d9310c4 | 3709 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 3710 | |
5d9310c4 SM |
3711 | if (strid == NULL || marker.str_id == strid) |
3712 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
3713 | } |
3714 | while (*p++ == ','); /* comma-separated list */ | |
3715 | /* Ask for another packet of static tracepoint definition. */ | |
3716 | putpkt ("qTsSTM"); | |
3717 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3718 | p = rs->buf; | |
3719 | } | |
3720 | ||
0fb4aa4b PA |
3721 | return markers; |
3722 | } | |
3723 | ||
3724 | \f | |
10760264 JB |
3725 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3726 | ||
f6ac5f3d PA |
3727 | ptid_t |
3728 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 3729 | { |
ba348170 | 3730 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3731 | } |
3732 | \f | |
3733 | ||
24b06219 | 3734 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3735 | |
3736 | static void | |
fba45db2 | 3737 | extended_remote_restart (void) |
c906108c | 3738 | { |
d01949b6 | 3739 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3740 | |
3741 | /* Send the restart command; for reasons I don't understand the | |
3742 | remote side really expects a number after the "R". */ | |
ea9c271d | 3743 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3744 | putpkt (rs->buf); |
c906108c | 3745 | |
ad9a8f3f | 3746 | remote_fileio_reset (); |
c906108c SS |
3747 | } |
3748 | \f | |
3749 | /* Clean up connection to a remote debugger. */ | |
3750 | ||
f6ac5f3d PA |
3751 | void |
3752 | remote_target::close () | |
c906108c | 3753 | { |
5d93a237 TT |
3754 | struct remote_state *rs = get_remote_state (); |
3755 | ||
3756 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3757 | return; /* already closed */ |
3758 | ||
048094ac | 3759 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 3760 | terminal_ours (); |
ce5ce7ed | 3761 | |
5d93a237 TT |
3762 | serial_close (rs->remote_desc); |
3763 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3764 | |
3765 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3766 | of all the inferiors and their threads we were controlling. |
3767 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3768 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3769 | inferior_ptid = null_ptid; |
f67fd822 | 3770 | discard_all_inferiors (); |
ce5ce7ed | 3771 | |
f48ff2a7 YQ |
3772 | /* We are closing the remote target, so we should discard |
3773 | everything of this target. */ | |
bcc75809 | 3774 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3775 | |
3776 | if (remote_async_inferior_event_token) | |
3777 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3778 | |
5965e028 | 3779 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3780 | |
3781 | trace_reset_local_state (); | |
c906108c SS |
3782 | } |
3783 | ||
23860348 | 3784 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3785 | |
3786 | static void | |
fba45db2 | 3787 | get_offsets (void) |
c906108c | 3788 | { |
d01949b6 | 3789 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3790 | char *buf; |
085dd6e6 | 3791 | char *ptr; |
31d99776 DJ |
3792 | int lose, num_segments = 0, do_sections, do_segments; |
3793 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3794 | struct section_offsets *offs; |
31d99776 DJ |
3795 | struct symfile_segment_data *data; |
3796 | ||
3797 | if (symfile_objfile == NULL) | |
3798 | return; | |
c906108c SS |
3799 | |
3800 | putpkt ("qOffsets"); | |
6d820c5c | 3801 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3802 | buf = rs->buf; |
c906108c SS |
3803 | |
3804 | if (buf[0] == '\000') | |
3805 | return; /* Return silently. Stub doesn't support | |
23860348 | 3806 | this command. */ |
c906108c SS |
3807 | if (buf[0] == 'E') |
3808 | { | |
8a3fe4f8 | 3809 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3810 | return; |
3811 | } | |
3812 | ||
3813 | /* Pick up each field in turn. This used to be done with scanf, but | |
3814 | scanf will make trouble if CORE_ADDR size doesn't match | |
3815 | conversion directives correctly. The following code will work | |
3816 | with any size of CORE_ADDR. */ | |
3817 | text_addr = data_addr = bss_addr = 0; | |
3818 | ptr = buf; | |
3819 | lose = 0; | |
3820 | ||
61012eef | 3821 | if (startswith (ptr, "Text=")) |
c906108c SS |
3822 | { |
3823 | ptr += 5; | |
3824 | /* Don't use strtol, could lose on big values. */ | |
3825 | while (*ptr && *ptr != ';') | |
3826 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3827 | |
61012eef | 3828 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3829 | { |
3830 | ptr += 6; | |
3831 | while (*ptr && *ptr != ';') | |
3832 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3833 | } | |
3834 | else | |
3835 | lose = 1; | |
3836 | ||
61012eef | 3837 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3838 | { |
3839 | ptr += 5; | |
3840 | while (*ptr && *ptr != ';') | |
3841 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3842 | |
31d99776 DJ |
3843 | if (bss_addr != data_addr) |
3844 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3845 | } | |
3846 | else | |
3847 | lose = 1; | |
3848 | } | |
61012eef | 3849 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3850 | { |
31d99776 DJ |
3851 | ptr += 8; |
3852 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3853 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3854 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3855 | num_segments = 1; | |
3856 | ||
61012eef | 3857 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3858 | { |
3859 | ptr += 9; | |
3860 | while (*ptr && *ptr != ';') | |
3861 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3862 | num_segments++; | |
3863 | } | |
c906108c SS |
3864 | } |
3865 | else | |
3866 | lose = 1; | |
3867 | ||
3868 | if (lose) | |
8a3fe4f8 | 3869 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3870 | else if (*ptr != '\0') |
3871 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3872 | |
802188a7 | 3873 | offs = ((struct section_offsets *) |
a39a16c4 | 3874 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3875 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3876 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3877 | |
31d99776 DJ |
3878 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3879 | do_segments = (data != NULL); | |
3880 | do_sections = num_segments == 0; | |
c906108c | 3881 | |
28c32713 | 3882 | if (num_segments > 0) |
31d99776 | 3883 | { |
31d99776 DJ |
3884 | segments[0] = text_addr; |
3885 | segments[1] = data_addr; | |
3886 | } | |
28c32713 JB |
3887 | /* If we have two segments, we can still try to relocate everything |
3888 | by assuming that the .text and .data offsets apply to the whole | |
3889 | text and data segments. Convert the offsets given in the packet | |
3890 | to base addresses for symfile_map_offsets_to_segments. */ | |
3891 | else if (data && data->num_segments == 2) | |
3892 | { | |
3893 | segments[0] = data->segment_bases[0] + text_addr; | |
3894 | segments[1] = data->segment_bases[1] + data_addr; | |
3895 | num_segments = 2; | |
3896 | } | |
8d385431 DJ |
3897 | /* If the object file has only one segment, assume that it is text |
3898 | rather than data; main programs with no writable data are rare, | |
3899 | but programs with no code are useless. Of course the code might | |
3900 | have ended up in the data segment... to detect that we would need | |
3901 | the permissions here. */ | |
3902 | else if (data && data->num_segments == 1) | |
3903 | { | |
3904 | segments[0] = data->segment_bases[0] + text_addr; | |
3905 | num_segments = 1; | |
3906 | } | |
28c32713 JB |
3907 | /* There's no way to relocate by segment. */ |
3908 | else | |
3909 | do_segments = 0; | |
31d99776 DJ |
3910 | |
3911 | if (do_segments) | |
3912 | { | |
3913 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3914 | offs, num_segments, segments); | |
3915 | ||
3916 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3917 | error (_("Can not handle qOffsets TextSeg " |
3918 | "response with this symbol file")); | |
31d99776 DJ |
3919 | |
3920 | if (ret > 0) | |
3921 | do_sections = 0; | |
3922 | } | |
c906108c | 3923 | |
9ef895d6 DJ |
3924 | if (data) |
3925 | free_symfile_segment_data (data); | |
31d99776 DJ |
3926 | |
3927 | if (do_sections) | |
3928 | { | |
3929 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3930 | ||
3e43a32a MS |
3931 | /* This is a temporary kludge to force data and bss to use the |
3932 | same offsets because that's what nlmconv does now. The real | |
3933 | solution requires changes to the stub and remote.c that I | |
3934 | don't have time to do right now. */ | |
31d99776 DJ |
3935 | |
3936 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3937 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3938 | } | |
c906108c SS |
3939 | |
3940 | objfile_relocate (symfile_objfile, offs); | |
3941 | } | |
3942 | ||
9a7071a8 JB |
3943 | /* Send interrupt_sequence to remote target. */ |
3944 | static void | |
eeae04df | 3945 | send_interrupt_sequence (void) |
9a7071a8 | 3946 | { |
5d93a237 TT |
3947 | struct remote_state *rs = get_remote_state (); |
3948 | ||
9a7071a8 | 3949 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3950 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3951 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3952 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3953 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3954 | { | |
5d93a237 | 3955 | serial_send_break (rs->remote_desc); |
c33e31fd | 3956 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3957 | } |
3958 | else | |
3959 | internal_error (__FILE__, __LINE__, | |
3960 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3961 | interrupt_sequence_mode); | |
3962 | } | |
3963 | ||
3405876a PA |
3964 | |
3965 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3966 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3967 | ||
3968 | static ptid_t | |
3969 | stop_reply_extract_thread (char *stop_reply) | |
3970 | { | |
3971 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3972 | { | |
256642e8 | 3973 | const char *p; |
3405876a PA |
3974 | |
3975 | /* Txx r:val ; r:val (...) */ | |
3976 | p = &stop_reply[3]; | |
3977 | ||
3978 | /* Look for "register" named "thread". */ | |
3979 | while (*p != '\0') | |
3980 | { | |
256642e8 | 3981 | const char *p1; |
3405876a PA |
3982 | |
3983 | p1 = strchr (p, ':'); | |
3984 | if (p1 == NULL) | |
3985 | return null_ptid; | |
3986 | ||
3987 | if (strncmp (p, "thread", p1 - p) == 0) | |
3988 | return read_ptid (++p1, &p); | |
3989 | ||
3990 | p1 = strchr (p, ';'); | |
3991 | if (p1 == NULL) | |
3992 | return null_ptid; | |
3993 | p1++; | |
3994 | ||
3995 | p = p1; | |
3996 | } | |
3997 | } | |
3998 | ||
3999 | return null_ptid; | |
4000 | } | |
4001 | ||
b7ea362b PA |
4002 | /* Determine the remote side's current thread. If we have a stop |
4003 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4004 | "thread" register we can extract the current thread from. If not, | |
4005 | ask the remote which is the current thread with qC. The former | |
4006 | method avoids a roundtrip. */ | |
4007 | ||
4008 | static ptid_t | |
4009 | get_current_thread (char *wait_status) | |
4010 | { | |
6a49a997 | 4011 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4012 | |
4013 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4014 | the target architecture, which we haven't yet fully determined at | |
4015 | this point. */ | |
4016 | if (wait_status != NULL) | |
4017 | ptid = stop_reply_extract_thread (wait_status); | |
4018 | if (ptid_equal (ptid, null_ptid)) | |
4019 | ptid = remote_current_thread (inferior_ptid); | |
4020 | ||
4021 | return ptid; | |
4022 | } | |
4023 | ||
49c62f2e PA |
4024 | /* Query the remote target for which is the current thread/process, |
4025 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4026 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4027 | to return the current thread. |
4028 | ||
4029 | This function is called after handling the '?' or 'vRun' packets, | |
4030 | whose response is a stop reply from which we can also try | |
4031 | extracting the thread. If the target doesn't support the explicit | |
4032 | qC query, we infer the current thread from that stop reply, passed | |
4033 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
4034 | |
4035 | static void | |
3405876a | 4036 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
4037 | { |
4038 | struct remote_state *rs = get_remote_state (); | |
4039 | int fake_pid_p = 0; | |
49c62f2e PA |
4040 | |
4041 | inferior_ptid = null_ptid; | |
4042 | ||
b7ea362b | 4043 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 4044 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4045 | |
87215ad1 | 4046 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4047 | { |
4048 | if (!remote_multi_process_p (rs)) | |
4049 | fake_pid_p = 1; | |
49c62f2e PA |
4050 | } |
4051 | else | |
4052 | { | |
4053 | /* Without this, some commands which require an active target | |
4054 | (such as kill) won't work. This variable serves (at least) | |
4055 | double duty as both the pid of the target process (if it has | |
4056 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4057 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
4058 | fake_pid_p = 1; |
4059 | } | |
4060 | ||
87215ad1 | 4061 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 4062 | |
87215ad1 SDJ |
4063 | /* Add the main thread and switch to it. Don't try reading |
4064 | registers yet, since we haven't fetched the target description | |
4065 | yet. */ | |
4066 | thread_info *tp = add_thread_silent (curr_ptid); | |
4067 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
4068 | } |
4069 | ||
6efcd9a8 PA |
4070 | /* Print info about a thread that was found already stopped on |
4071 | connection. */ | |
4072 | ||
4073 | static void | |
4074 | print_one_stopped_thread (struct thread_info *thread) | |
4075 | { | |
4076 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4077 | ||
4078 | switch_to_thread (thread->ptid); | |
4079 | stop_pc = get_frame_pc (get_current_frame ()); | |
4080 | set_current_sal_from_frame (get_current_frame ()); | |
4081 | ||
4082 | thread->suspend.waitstatus_pending_p = 0; | |
4083 | ||
4084 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4085 | { | |
4086 | enum gdb_signal sig = ws->value.sig; | |
4087 | ||
4088 | if (signal_print_state (sig)) | |
76727919 | 4089 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4090 | } |
76727919 | 4091 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4092 | } |
4093 | ||
221e1a37 PA |
4094 | /* Process all initial stop replies the remote side sent in response |
4095 | to the ? packet. These indicate threads that were already stopped | |
4096 | on initial connection. We mark these threads as stopped and print | |
4097 | their current frame before giving the user the prompt. */ | |
4098 | ||
4099 | static void | |
6efcd9a8 | 4100 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
4101 | { |
4102 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4103 | struct inferior *inf; |
4104 | struct thread_info *thread; | |
4105 | struct thread_info *selected = NULL; | |
4106 | struct thread_info *lowest_stopped = NULL; | |
4107 | struct thread_info *first = NULL; | |
221e1a37 PA |
4108 | |
4109 | /* Consume the initial pending events. */ | |
4110 | while (pending_stop_replies-- > 0) | |
4111 | { | |
4112 | ptid_t waiton_ptid = minus_one_ptid; | |
4113 | ptid_t event_ptid; | |
4114 | struct target_waitstatus ws; | |
4115 | int ignore_event = 0; | |
6efcd9a8 | 4116 | struct thread_info *thread; |
221e1a37 PA |
4117 | |
4118 | memset (&ws, 0, sizeof (ws)); | |
4119 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4120 | if (remote_debug) | |
4121 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4122 | ||
4123 | switch (ws.kind) | |
4124 | { | |
4125 | case TARGET_WAITKIND_IGNORE: | |
4126 | case TARGET_WAITKIND_NO_RESUMED: | |
4127 | case TARGET_WAITKIND_SIGNALLED: | |
4128 | case TARGET_WAITKIND_EXITED: | |
4129 | /* We shouldn't see these, but if we do, just ignore. */ | |
4130 | if (remote_debug) | |
4131 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4132 | ignore_event = 1; | |
4133 | break; | |
4134 | ||
4135 | case TARGET_WAITKIND_EXECD: | |
4136 | xfree (ws.value.execd_pathname); | |
4137 | break; | |
4138 | default: | |
4139 | break; | |
4140 | } | |
4141 | ||
4142 | if (ignore_event) | |
4143 | continue; | |
4144 | ||
6efcd9a8 | 4145 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
4146 | |
4147 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4148 | { | |
4149 | enum gdb_signal sig = ws.value.sig; | |
4150 | ||
4151 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4152 | instead of signal 0. Suppress it. */ | |
4153 | if (sig == GDB_SIGNAL_TRAP) | |
4154 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
4155 | thread->suspend.stop_signal = sig; |
4156 | ws.value.sig = sig; | |
4157 | } | |
221e1a37 | 4158 | |
6efcd9a8 PA |
4159 | thread->suspend.waitstatus = ws; |
4160 | ||
4161 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4162 | || ws.value.sig != GDB_SIGNAL_0) | |
4163 | thread->suspend.waitstatus_pending_p = 1; | |
4164 | ||
4165 | set_executing (event_ptid, 0); | |
4166 | set_running (event_ptid, 0); | |
7aabaf9d | 4167 | get_remote_thread_info (thread)->vcont_resumed = 0; |
6efcd9a8 PA |
4168 | } |
4169 | ||
4170 | /* "Notice" the new inferiors before anything related to | |
4171 | registers/memory. */ | |
4172 | ALL_INFERIORS (inf) | |
4173 | { | |
4174 | if (inf->pid == 0) | |
4175 | continue; | |
4176 | ||
4177 | inf->needs_setup = 1; | |
4178 | ||
4179 | if (non_stop) | |
4180 | { | |
4181 | thread = any_live_thread_of_process (inf->pid); | |
4182 | notice_new_inferior (thread->ptid, | |
4183 | thread->state == THREAD_RUNNING, | |
4184 | from_tty); | |
4185 | } | |
4186 | } | |
4187 | ||
4188 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4189 | records the threads' stop pc, so must be done after "noticing" | |
4190 | the inferiors. */ | |
4191 | if (!non_stop) | |
4192 | { | |
4193 | stop_all_threads (); | |
4194 | ||
4195 | /* If all threads of an inferior were already stopped, we | |
4196 | haven't setup the inferior yet. */ | |
4197 | ALL_INFERIORS (inf) | |
4198 | { | |
4199 | if (inf->pid == 0) | |
4200 | continue; | |
221e1a37 | 4201 | |
6efcd9a8 PA |
4202 | if (inf->needs_setup) |
4203 | { | |
4204 | thread = any_live_thread_of_process (inf->pid); | |
4205 | switch_to_thread_no_regs (thread); | |
4206 | setup_inferior (0); | |
4207 | } | |
4208 | } | |
221e1a37 | 4209 | } |
6efcd9a8 PA |
4210 | |
4211 | /* Now go over all threads that are stopped, and print their current | |
4212 | frame. If all-stop, then if there's a signalled thread, pick | |
4213 | that as current. */ | |
4214 | ALL_NON_EXITED_THREADS (thread) | |
4215 | { | |
6efcd9a8 PA |
4216 | if (first == NULL) |
4217 | first = thread; | |
4218 | ||
4219 | if (!non_stop) | |
4220 | set_running (thread->ptid, 0); | |
4221 | else if (thread->state != THREAD_STOPPED) | |
4222 | continue; | |
4223 | ||
6efcd9a8 PA |
4224 | if (selected == NULL |
4225 | && thread->suspend.waitstatus_pending_p) | |
4226 | selected = thread; | |
4227 | ||
5d5658a1 PA |
4228 | if (lowest_stopped == NULL |
4229 | || thread->inf->num < lowest_stopped->inf->num | |
4230 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4231 | lowest_stopped = thread; |
4232 | ||
4233 | if (non_stop) | |
4234 | print_one_stopped_thread (thread); | |
4235 | } | |
4236 | ||
4237 | /* In all-stop, we only print the status of one thread, and leave | |
4238 | others with their status pending. */ | |
4239 | if (!non_stop) | |
4240 | { | |
4241 | thread = selected; | |
4242 | if (thread == NULL) | |
4243 | thread = lowest_stopped; | |
4244 | if (thread == NULL) | |
4245 | thread = first; | |
4246 | ||
4247 | print_one_stopped_thread (thread); | |
4248 | } | |
4249 | ||
4250 | /* For "info program". */ | |
4251 | thread = inferior_thread (); | |
4252 | if (thread->state == THREAD_STOPPED) | |
4253 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4254 | } |
4255 | ||
048094ac PA |
4256 | /* Start the remote connection and sync state. */ |
4257 | ||
f6ac5f3d PA |
4258 | void |
4259 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4260 | { |
c8d104ad PA |
4261 | struct remote_state *rs = get_remote_state (); |
4262 | struct packet_config *noack_config; | |
2d717e4f | 4263 | char *wait_status = NULL; |
8621d6a9 | 4264 | |
048094ac PA |
4265 | /* Signal other parts that we're going through the initial setup, |
4266 | and so things may not be stable yet. E.g., we don't try to | |
4267 | install tracepoints until we've relocated symbols. Also, a | |
4268 | Ctrl-C before we're connected and synced up can't interrupt the | |
4269 | target. Instead, it offers to drop the (potentially wedged) | |
4270 | connection. */ | |
4271 | rs->starting_up = 1; | |
4272 | ||
522002f9 | 4273 | QUIT; |
c906108c | 4274 | |
9a7071a8 JB |
4275 | if (interrupt_on_connect) |
4276 | send_interrupt_sequence (); | |
4277 | ||
57e12211 | 4278 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4279 | remote_serial_write ("+", 1); |
1e51243a | 4280 | |
c8d104ad PA |
4281 | /* The first packet we send to the target is the optional "supported |
4282 | packets" request. If the target can answer this, it will tell us | |
4283 | which later probes to skip. */ | |
4284 | remote_query_supported (); | |
4285 | ||
d914c394 | 4286 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4287 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4288 | set_permissions (); |
d914c394 | 4289 | |
57809e5e JK |
4290 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4291 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4292 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4293 | invalid reply and GDB would return error in | |
4294 | remote_hostio_set_filesystem, making remote files access impossible. | |
4295 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4296 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4297 | { | |
4298 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4299 | ||
4300 | putpkt (v_mustreplyempty); | |
4301 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4302 | if (strcmp (rs->buf, "OK") == 0) | |
4303 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4304 | else if (strcmp (rs->buf, "") != 0) | |
4305 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4306 | rs->buf); | |
4307 | } | |
4308 | ||
c8d104ad PA |
4309 | /* Next, we possibly activate noack mode. |
4310 | ||
4311 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4312 | enable noack mode if the stub reported a wish for it with | |
4313 | qSupported. | |
4314 | ||
4315 | If set to TRUE, then enable noack mode even if the stub didn't | |
4316 | report it in qSupported. If the stub doesn't reply OK, the | |
4317 | session ends with an error. | |
4318 | ||
4319 | If FALSE, then don't activate noack mode, regardless of what the | |
4320 | stub claimed should be the default with qSupported. */ | |
4321 | ||
4322 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4323 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4324 | { |
4325 | putpkt ("QStartNoAckMode"); | |
4326 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4327 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4328 | rs->noack_mode = 1; | |
4329 | } | |
4330 | ||
04bd08de | 4331 | if (extended_p) |
5fe04517 PA |
4332 | { |
4333 | /* Tell the remote that we are using the extended protocol. */ | |
4334 | putpkt ("!"); | |
4335 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4336 | } | |
4337 | ||
9b224c5e PA |
4338 | /* Let the target know which signals it is allowed to pass down to |
4339 | the program. */ | |
4340 | update_signals_program_target (); | |
4341 | ||
d962ef82 DJ |
4342 | /* Next, if the target can specify a description, read it. We do |
4343 | this before anything involving memory or registers. */ | |
4344 | target_find_description (); | |
4345 | ||
6c95b8df PA |
4346 | /* Next, now that we know something about the target, update the |
4347 | address spaces in the program spaces. */ | |
4348 | update_address_spaces (); | |
4349 | ||
50c71eaf PA |
4350 | /* On OSs where the list of libraries is global to all |
4351 | processes, we fetch them early. */ | |
f5656ead | 4352 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4353 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4354 | |
6efcd9a8 | 4355 | if (target_is_non_stop_p ()) |
74531fed | 4356 | { |
4082afcc | 4357 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4358 | error (_("Non-stop mode requested, but remote " |
4359 | "does not support non-stop")); | |
74531fed PA |
4360 | |
4361 | putpkt ("QNonStop:1"); | |
4362 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4363 | ||
4364 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4365 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4366 | |
4367 | /* Find about threads and processes the stub is already | |
4368 | controlling. We default to adding them in the running state. | |
4369 | The '?' query below will then tell us about which threads are | |
4370 | stopped. */ | |
f6ac5f3d | 4371 | this->update_thread_list (); |
74531fed | 4372 | } |
4082afcc | 4373 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4374 | { |
4375 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4376 | Request it explicitly. */ |
74531fed PA |
4377 | putpkt ("QNonStop:0"); |
4378 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4379 | ||
4380 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4381 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4382 | } |
4383 | ||
a0743c90 YQ |
4384 | /* Upload TSVs regardless of whether the target is running or not. The |
4385 | remote stub, such as GDBserver, may have some predefined or builtin | |
4386 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4387 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4388 | { |
4389 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4390 | ||
f6ac5f3d | 4391 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4392 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4393 | } | |
4394 | ||
2d717e4f DJ |
4395 | /* Check whether the target is running now. */ |
4396 | putpkt ("?"); | |
4397 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4398 | ||
6efcd9a8 | 4399 | if (!target_is_non_stop_p ()) |
2d717e4f | 4400 | { |
74531fed | 4401 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4402 | { |
04bd08de | 4403 | if (!extended_p) |
74531fed | 4404 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4405 | |
4406 | /* We're connected, but not running. Drop out before we | |
4407 | call start_remote. */ | |
e278ad5b | 4408 | rs->starting_up = 0; |
c35b1492 | 4409 | return; |
2d717e4f DJ |
4410 | } |
4411 | else | |
74531fed | 4412 | { |
74531fed | 4413 | /* Save the reply for later. */ |
224c3ddb | 4414 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4415 | strcpy (wait_status, rs->buf); |
4416 | } | |
4417 | ||
b7ea362b | 4418 | /* Fetch thread list. */ |
e8032dde | 4419 | target_update_thread_list (); |
b7ea362b | 4420 | |
74531fed PA |
4421 | /* Let the stub know that we want it to return the thread. */ |
4422 | set_continue_thread (minus_one_ptid); | |
4423 | ||
b7ea362b PA |
4424 | if (thread_count () == 0) |
4425 | { | |
4426 | /* Target has no concept of threads at all. GDB treats | |
4427 | non-threaded target as single-threaded; add a main | |
4428 | thread. */ | |
4429 | add_current_inferior_and_thread (wait_status); | |
4430 | } | |
4431 | else | |
4432 | { | |
4433 | /* We have thread information; select the thread the target | |
4434 | says should be current. If we're reconnecting to a | |
4435 | multi-threaded program, this will ideally be the thread | |
4436 | that last reported an event before GDB disconnected. */ | |
4437 | inferior_ptid = get_current_thread (wait_status); | |
4438 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4439 | { | |
4440 | /* Odd... The target was able to list threads, but not | |
4441 | tell us which thread was current (no "thread" | |
4442 | register in T stop reply?). Just pick the first | |
4443 | thread in the thread list then. */ | |
c9f35b34 KB |
4444 | |
4445 | if (remote_debug) | |
4446 | fprintf_unfiltered (gdb_stdlog, | |
4447 | "warning: couldn't determine remote " | |
4448 | "current thread; picking first in list.\n"); | |
4449 | ||
b7ea362b PA |
4450 | inferior_ptid = thread_list->ptid; |
4451 | } | |
4452 | } | |
74531fed | 4453 | |
6e586cc5 YQ |
4454 | /* init_wait_for_inferior should be called before get_offsets in order |
4455 | to manage `inserted' flag in bp loc in a correct state. | |
4456 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4457 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4458 | start_remote, set `inserted' flag to 1. In the initialization of | |
4459 | inferior, breakpoint_init_inferior should be called first, and then | |
4460 | breakpoint_re_set can be called. If this order is broken, state of | |
4461 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4462 | manipulation. */ | |
4463 | init_wait_for_inferior (); | |
4464 | ||
74531fed PA |
4465 | get_offsets (); /* Get text, data & bss offsets. */ |
4466 | ||
d962ef82 DJ |
4467 | /* If we could not find a description using qXfer, and we know |
4468 | how to do it some other way, try again. This is not | |
4469 | supported for non-stop; it could be, but it is tricky if | |
4470 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4471 | if (remote_read_description_p (this) |
f5656ead | 4472 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4473 | { |
4474 | target_clear_description (); | |
4475 | target_find_description (); | |
4476 | } | |
4477 | ||
74531fed PA |
4478 | /* Use the previously fetched status. */ |
4479 | gdb_assert (wait_status != NULL); | |
4480 | strcpy (rs->buf, wait_status); | |
4481 | rs->cached_wait_status = 1; | |
4482 | ||
f6ac5f3d | 4483 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4484 | } |
4485 | else | |
4486 | { | |
68c97600 PA |
4487 | /* Clear WFI global state. Do this before finding about new |
4488 | threads and inferiors, and setting the current inferior. | |
4489 | Otherwise we would clear the proceed status of the current | |
4490 | inferior when we want its stop_soon state to be preserved | |
4491 | (see notice_new_inferior). */ | |
4492 | init_wait_for_inferior (); | |
4493 | ||
74531fed PA |
4494 | /* In non-stop, we will either get an "OK", meaning that there |
4495 | are no stopped threads at this time; or, a regular stop | |
4496 | reply. In the latter case, there may be more than one thread | |
4497 | stopped --- we pull them all out using the vStopped | |
4498 | mechanism. */ | |
4499 | if (strcmp (rs->buf, "OK") != 0) | |
4500 | { | |
722247f1 | 4501 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4502 | |
722247f1 YQ |
4503 | /* remote_notif_get_pending_replies acks this one, and gets |
4504 | the rest out. */ | |
f48ff2a7 | 4505 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4506 | = remote_notif_parse (notif, rs->buf); |
4507 | remote_notif_get_pending_events (notif); | |
74531fed | 4508 | } |
2d717e4f | 4509 | |
74531fed PA |
4510 | if (thread_count () == 0) |
4511 | { | |
04bd08de | 4512 | if (!extended_p) |
74531fed | 4513 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4514 | |
c35b1492 PA |
4515 | /* We're connected, but not running. Drop out before we |
4516 | call start_remote. */ | |
e278ad5b | 4517 | rs->starting_up = 0; |
c35b1492 PA |
4518 | return; |
4519 | } | |
74531fed | 4520 | |
74531fed PA |
4521 | /* In non-stop mode, any cached wait status will be stored in |
4522 | the stop reply queue. */ | |
4523 | gdb_assert (wait_status == NULL); | |
f0223081 | 4524 | |
2455069d | 4525 | /* Report all signals during attach/startup. */ |
f6ac5f3d | 4526 | pass_signals (0, NULL); |
221e1a37 PA |
4527 | |
4528 | /* If there are already stopped threads, mark them stopped and | |
4529 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4530 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4531 | |
4532 | if (target_can_async_p ()) | |
4533 | target_async (1); | |
74531fed | 4534 | } |
c8d104ad | 4535 | |
c8d104ad PA |
4536 | /* If we connected to a live target, do some additional setup. */ |
4537 | if (target_has_execution) | |
4538 | { | |
f4ccffad | 4539 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4540 | remote_check_symbols (); |
c8d104ad | 4541 | } |
50c71eaf | 4542 | |
d5551862 SS |
4543 | /* Possibly the target has been engaged in a trace run started |
4544 | previously; find out where things are at. */ | |
f6ac5f3d | 4545 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4546 | { |
00bf0b85 | 4547 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4548 | |
00bf0b85 SS |
4549 | if (current_trace_status ()->running) |
4550 | printf_filtered (_("Trace is already running on the target.\n")); | |
4551 | ||
f6ac5f3d | 4552 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4553 | |
4554 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4555 | } |
4556 | ||
c0272db5 TW |
4557 | /* Possibly the target has been engaged in a btrace record started |
4558 | previously; find out where things are at. */ | |
4559 | remote_btrace_maybe_reopen (); | |
4560 | ||
1e51243a PA |
4561 | /* The thread and inferior lists are now synchronized with the |
4562 | target, our symbols have been relocated, and we're merged the | |
4563 | target's tracepoints with ours. We're done with basic start | |
4564 | up. */ | |
4565 | rs->starting_up = 0; | |
4566 | ||
a25a5a45 PA |
4567 | /* Maybe breakpoints are global and need to be inserted now. */ |
4568 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4569 | insert_breakpoints (); |
c906108c SS |
4570 | } |
4571 | ||
4572 | /* Open a connection to a remote debugger. | |
4573 | NAME is the filename used for communication. */ | |
4574 | ||
f6ac5f3d PA |
4575 | void |
4576 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4577 | { |
f6ac5f3d | 4578 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4579 | } |
4580 | ||
c906108c SS |
4581 | /* Open a connection to a remote debugger using the extended |
4582 | remote gdb protocol. NAME is the filename used for communication. */ | |
4583 | ||
f6ac5f3d PA |
4584 | void |
4585 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4586 | { |
f6ac5f3d | 4587 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4588 | } |
4589 | ||
ca4f7f8b PA |
4590 | /* Reset all packets back to "unknown support". Called when opening a |
4591 | new connection to a remote target. */ | |
c906108c | 4592 | |
d471ea57 | 4593 | static void |
ca4f7f8b | 4594 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4595 | { |
4596 | int i; | |
a744cf53 | 4597 | |
444abaca | 4598 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4599 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4600 | } |
4601 | ||
ca4f7f8b PA |
4602 | /* Initialize all packet configs. */ |
4603 | ||
4604 | static void | |
4605 | init_all_packet_configs (void) | |
4606 | { | |
4607 | int i; | |
4608 | ||
4609 | for (i = 0; i < PACKET_MAX; i++) | |
4610 | { | |
4611 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4612 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4613 | } | |
4614 | } | |
4615 | ||
23860348 | 4616 | /* Symbol look-up. */ |
dc8acb97 MS |
4617 | |
4618 | static void | |
36d25514 | 4619 | remote_check_symbols (void) |
dc8acb97 MS |
4620 | { |
4621 | char *msg, *reply, *tmp; | |
dc8acb97 | 4622 | int end; |
28170b88 | 4623 | long reply_size; |
a5c0808e | 4624 | struct cleanup *old_chain; |
dc8acb97 | 4625 | |
63154eca PA |
4626 | /* The remote side has no concept of inferiors that aren't running |
4627 | yet, it only knows about running processes. If we're connected | |
4628 | but our current inferior is not running, we should not invite the | |
4629 | remote target to request symbol lookups related to its | |
4630 | (unrelated) current process. */ | |
4631 | if (!target_has_execution) | |
4632 | return; | |
4633 | ||
4082afcc | 4634 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4635 | return; |
4636 | ||
63154eca PA |
4637 | /* Make sure the remote is pointing at the right process. Note |
4638 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4639 | set_general_process (); |
4640 | ||
6d820c5c DJ |
4641 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4642 | because we need both at the same time. */ | |
224c3ddb | 4643 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4644 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4645 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4646 | make_cleanup (free_current_contents, &reply); | |
4647 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4648 | |
23860348 | 4649 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4650 | |
4651 | putpkt ("qSymbol::"); | |
28170b88 MK |
4652 | getpkt (&reply, &reply_size, 0); |
4653 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4654 | |
61012eef | 4655 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4656 | { |
77e371c0 TT |
4657 | struct bound_minimal_symbol sym; |
4658 | ||
dc8acb97 | 4659 | tmp = &reply[8]; |
cfd77fa1 | 4660 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4661 | msg[end] = '\0'; |
4662 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4663 | if (sym.minsym == NULL) |
ea9c271d | 4664 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4665 | else |
2bbe3cc1 | 4666 | { |
f5656ead | 4667 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4668 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4669 | |
4670 | /* If this is a function address, return the start of code | |
4671 | instead of any data function descriptor. */ | |
f5656ead | 4672 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4673 | sym_addr, |
f6ac5f3d | 4674 | target_stack); |
2bbe3cc1 DJ |
4675 | |
4676 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4677 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4678 | } |
4679 | ||
dc8acb97 | 4680 | putpkt (msg); |
28170b88 | 4681 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4682 | } |
a5c0808e PA |
4683 | |
4684 | do_cleanups (old_chain); | |
dc8acb97 MS |
4685 | } |
4686 | ||
9db8d71f | 4687 | static struct serial * |
baa336ce | 4688 | remote_serial_open (const char *name) |
9db8d71f DJ |
4689 | { |
4690 | static int udp_warning = 0; | |
4691 | ||
4692 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4693 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4694 | serial connection is reliable and not the serial connection promising | |
4695 | to be. */ | |
61012eef | 4696 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4697 | { |
3e43a32a MS |
4698 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4699 | "Some events may be lost, rendering further debugging " | |
4700 | "impossible.")); | |
9db8d71f DJ |
4701 | udp_warning = 1; |
4702 | } | |
4703 | ||
4704 | return serial_open (name); | |
4705 | } | |
4706 | ||
d914c394 SS |
4707 | /* Inform the target of our permission settings. The permission flags |
4708 | work without this, but if the target knows the settings, it can do | |
4709 | a couple things. First, it can add its own check, to catch cases | |
4710 | that somehow manage to get by the permissions checks in target | |
4711 | methods. Second, if the target is wired to disallow particular | |
4712 | settings (for instance, a system in the field that is not set up to | |
4713 | be able to stop at a breakpoint), it can object to any unavailable | |
4714 | permissions. */ | |
4715 | ||
4716 | void | |
f6ac5f3d | 4717 | remote_target::set_permissions () |
d914c394 SS |
4718 | { |
4719 | struct remote_state *rs = get_remote_state (); | |
4720 | ||
bba74b36 YQ |
4721 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4722 | "WriteReg:%x;WriteMem:%x;" | |
4723 | "InsertBreak:%x;InsertTrace:%x;" | |
4724 | "InsertFastTrace:%x;Stop:%x", | |
4725 | may_write_registers, may_write_memory, | |
4726 | may_insert_breakpoints, may_insert_tracepoints, | |
4727 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4728 | putpkt (rs->buf); |
4729 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4730 | ||
4731 | /* If the target didn't like the packet, warn the user. Do not try | |
4732 | to undo the user's settings, that would just be maddening. */ | |
4733 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4734 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4735 | } |
4736 | ||
be2a5f71 DJ |
4737 | /* This type describes each known response to the qSupported |
4738 | packet. */ | |
4739 | struct protocol_feature | |
4740 | { | |
4741 | /* The name of this protocol feature. */ | |
4742 | const char *name; | |
4743 | ||
4744 | /* The default for this protocol feature. */ | |
4745 | enum packet_support default_support; | |
4746 | ||
4747 | /* The function to call when this feature is reported, or after | |
4748 | qSupported processing if the feature is not supported. | |
4749 | The first argument points to this structure. The second | |
4750 | argument indicates whether the packet requested support be | |
4751 | enabled, disabled, or probed (or the default, if this function | |
4752 | is being called at the end of processing and this feature was | |
4753 | not reported). The third argument may be NULL; if not NULL, it | |
4754 | is a NUL-terminated string taken from the packet following | |
4755 | this feature's name and an equals sign. */ | |
4756 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4757 | const char *); | |
4758 | ||
4759 | /* The corresponding packet for this feature. Only used if | |
4760 | FUNC is remote_supported_packet. */ | |
4761 | int packet; | |
4762 | }; | |
4763 | ||
be2a5f71 DJ |
4764 | static void |
4765 | remote_supported_packet (const struct protocol_feature *feature, | |
4766 | enum packet_support support, | |
4767 | const char *argument) | |
4768 | { | |
4769 | if (argument) | |
4770 | { | |
4771 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4772 | " \"%s\"."), feature->name); | |
4773 | return; | |
4774 | } | |
4775 | ||
4082afcc | 4776 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4777 | } |
be2a5f71 DJ |
4778 | |
4779 | static void | |
4780 | remote_packet_size (const struct protocol_feature *feature, | |
4781 | enum packet_support support, const char *value) | |
4782 | { | |
4783 | struct remote_state *rs = get_remote_state (); | |
4784 | ||
4785 | int packet_size; | |
4786 | char *value_end; | |
4787 | ||
4788 | if (support != PACKET_ENABLE) | |
4789 | return; | |
4790 | ||
4791 | if (value == NULL || *value == '\0') | |
4792 | { | |
4793 | warning (_("Remote target reported \"%s\" without a size."), | |
4794 | feature->name); | |
4795 | return; | |
4796 | } | |
4797 | ||
4798 | errno = 0; | |
4799 | packet_size = strtol (value, &value_end, 16); | |
4800 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4801 | { | |
4802 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4803 | feature->name, value); | |
4804 | return; | |
4805 | } | |
4806 | ||
be2a5f71 DJ |
4807 | /* Record the new maximum packet size. */ |
4808 | rs->explicit_packet_size = packet_size; | |
4809 | } | |
4810 | ||
dc473cfb | 4811 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4812 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4813 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4814 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4815 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4816 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4817 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4818 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4819 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4820 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4821 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4822 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4823 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4824 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4825 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4826 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4827 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4828 | PACKET_qXfer_spu_read }, | |
4829 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4830 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4831 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4832 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4833 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4834 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4835 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4836 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4837 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4838 | PACKET_QPassSignals }, | |
82075af2 JS |
4839 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4840 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4841 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4842 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
4843 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
4844 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
4845 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4846 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
4847 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
4848 | PACKET_QEnvironmentHexEncoded }, | |
4849 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
4850 | PACKET_QEnvironmentReset }, | |
4851 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
4852 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
4853 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4854 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4855 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4856 | PACKET_multiprocess_feature }, | |
4857 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4858 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4859 | PACKET_qXfer_siginfo_read }, | |
4860 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4861 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4862 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4863 | PACKET_ConditionalTracepoints }, |
4082afcc | 4864 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4865 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4866 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4867 | PACKET_BreakpointCommands }, |
4082afcc | 4868 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4869 | PACKET_FastTracepoints }, |
4082afcc | 4870 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4871 | PACKET_StaticTracepoints }, |
4082afcc | 4872 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4873 | PACKET_InstallInTrace}, |
4082afcc PA |
4874 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4875 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4876 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4877 | PACKET_bc }, | |
4878 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4879 | PACKET_bs }, | |
409873ef SS |
4880 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4881 | PACKET_TracepointSource }, | |
d914c394 SS |
4882 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4883 | PACKET_QAllow }, | |
4082afcc PA |
4884 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4885 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4886 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4887 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4888 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4889 | PACKET_qXfer_uib }, | |
03583c20 UW |
4890 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4891 | PACKET_QDisableRandomization }, | |
d1feda86 | 4892 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4893 | { "QTBuffer:size", PACKET_DISABLE, |
4894 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4895 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4896 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4897 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4898 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4899 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4900 | PACKET_qXfer_btrace }, |
4901 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4902 | PACKET_qXfer_btrace_conf }, |
4903 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4904 | PACKET_Qbtrace_conf_bts_size }, |
4905 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4906 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4907 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4908 | PACKET_fork_event_feature }, | |
4909 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4910 | PACKET_vfork_event_feature }, | |
94585166 DB |
4911 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4912 | PACKET_exec_event_feature }, | |
b20a6524 | 4913 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4914 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4915 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4916 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4917 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4918 | }; |
4919 | ||
c8d5aac9 L |
4920 | static char *remote_support_xml; |
4921 | ||
4922 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4923 | ||
4924 | void | |
6e39997a | 4925 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4926 | { |
4927 | #if defined(HAVE_LIBEXPAT) | |
4928 | if (remote_support_xml == NULL) | |
c4f7c687 | 4929 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4930 | else |
4931 | { | |
4932 | char *copy = xstrdup (remote_support_xml + 13); | |
4933 | char *p = strtok (copy, ","); | |
4934 | ||
4935 | do | |
4936 | { | |
4937 | if (strcmp (p, xml) == 0) | |
4938 | { | |
4939 | /* already there */ | |
4940 | xfree (copy); | |
4941 | return; | |
4942 | } | |
4943 | } | |
4944 | while ((p = strtok (NULL, ",")) != NULL); | |
4945 | xfree (copy); | |
4946 | ||
94b0dee1 PA |
4947 | remote_support_xml = reconcat (remote_support_xml, |
4948 | remote_support_xml, ",", xml, | |
4949 | (char *) NULL); | |
c8d5aac9 L |
4950 | } |
4951 | #endif | |
4952 | } | |
4953 | ||
4954 | static char * | |
4955 | remote_query_supported_append (char *msg, const char *append) | |
4956 | { | |
4957 | if (msg) | |
94b0dee1 | 4958 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4959 | else |
4960 | return xstrdup (append); | |
4961 | } | |
4962 | ||
be2a5f71 DJ |
4963 | static void |
4964 | remote_query_supported (void) | |
4965 | { | |
4966 | struct remote_state *rs = get_remote_state (); | |
4967 | char *next; | |
4968 | int i; | |
4969 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4970 | ||
4971 | /* The packet support flags are handled differently for this packet | |
4972 | than for most others. We treat an error, a disabled packet, and | |
4973 | an empty response identically: any features which must be reported | |
4974 | to be used will be automatically disabled. An empty buffer | |
4975 | accomplishes this, since that is also the representation for a list | |
4976 | containing no features. */ | |
4977 | ||
4978 | rs->buf[0] = 0; | |
4082afcc | 4979 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4980 | { |
c8d5aac9 | 4981 | char *q = NULL; |
94b0dee1 | 4982 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4983 | |
73b8c1fd PA |
4984 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4985 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4986 | |
f7e6eed5 PA |
4987 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4988 | q = remote_query_supported_append (q, "swbreak+"); | |
4989 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4990 | q = remote_query_supported_append (q, "hwbreak+"); | |
4991 | ||
dde08ee1 PA |
4992 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4993 | ||
8020350c DB |
4994 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4995 | != AUTO_BOOLEAN_FALSE) | |
4996 | q = remote_query_supported_append (q, "fork-events+"); | |
4997 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4998 | != AUTO_BOOLEAN_FALSE) | |
4999 | q = remote_query_supported_append (q, "vfork-events+"); | |
5000 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
5001 | != AUTO_BOOLEAN_FALSE) | |
5002 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 5003 | |
750ce8d1 YQ |
5004 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
5005 | q = remote_query_supported_append (q, "vContSupported+"); | |
5006 | ||
65706a29 PA |
5007 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
5008 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
5009 | ||
f2faf941 PA |
5010 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
5011 | q = remote_query_supported_append (q, "no-resumed+"); | |
5012 | ||
b35d5edb PA |
5013 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5014 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5015 | if (remote_support_xml != NULL |
5016 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
b35d5edb PA |
5017 | q = remote_query_supported_append (q, remote_support_xml); |
5018 | ||
dde08ee1 PA |
5019 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
5020 | putpkt (q); | |
82f73884 | 5021 | |
94b0dee1 PA |
5022 | do_cleanups (old_chain); |
5023 | ||
be2a5f71 DJ |
5024 | getpkt (&rs->buf, &rs->buf_size, 0); |
5025 | ||
5026 | /* If an error occured, warn, but do not return - just reset the | |
5027 | buffer to empty and go on to disable features. */ | |
5028 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5029 | == PACKET_ERROR) | |
5030 | { | |
5031 | warning (_("Remote failure reply: %s"), rs->buf); | |
5032 | rs->buf[0] = 0; | |
5033 | } | |
5034 | } | |
5035 | ||
5036 | memset (seen, 0, sizeof (seen)); | |
5037 | ||
5038 | next = rs->buf; | |
5039 | while (*next) | |
5040 | { | |
5041 | enum packet_support is_supported; | |
5042 | char *p, *end, *name_end, *value; | |
5043 | ||
5044 | /* First separate out this item from the rest of the packet. If | |
5045 | there's another item after this, we overwrite the separator | |
5046 | (terminated strings are much easier to work with). */ | |
5047 | p = next; | |
5048 | end = strchr (p, ';'); | |
5049 | if (end == NULL) | |
5050 | { | |
5051 | end = p + strlen (p); | |
5052 | next = end; | |
5053 | } | |
5054 | else | |
5055 | { | |
89be2091 DJ |
5056 | *end = '\0'; |
5057 | next = end + 1; | |
5058 | ||
be2a5f71 DJ |
5059 | if (end == p) |
5060 | { | |
5061 | warning (_("empty item in \"qSupported\" response")); | |
5062 | continue; | |
5063 | } | |
be2a5f71 DJ |
5064 | } |
5065 | ||
5066 | name_end = strchr (p, '='); | |
5067 | if (name_end) | |
5068 | { | |
5069 | /* This is a name=value entry. */ | |
5070 | is_supported = PACKET_ENABLE; | |
5071 | value = name_end + 1; | |
5072 | *name_end = '\0'; | |
5073 | } | |
5074 | else | |
5075 | { | |
5076 | value = NULL; | |
5077 | switch (end[-1]) | |
5078 | { | |
5079 | case '+': | |
5080 | is_supported = PACKET_ENABLE; | |
5081 | break; | |
5082 | ||
5083 | case '-': | |
5084 | is_supported = PACKET_DISABLE; | |
5085 | break; | |
5086 | ||
5087 | case '?': | |
5088 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5089 | break; | |
5090 | ||
5091 | default: | |
3e43a32a MS |
5092 | warning (_("unrecognized item \"%s\" " |
5093 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5094 | continue; |
5095 | } | |
5096 | end[-1] = '\0'; | |
5097 | } | |
5098 | ||
5099 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5100 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5101 | { | |
5102 | const struct protocol_feature *feature; | |
5103 | ||
5104 | seen[i] = 1; | |
5105 | feature = &remote_protocol_features[i]; | |
5106 | feature->func (feature, is_supported, value); | |
5107 | break; | |
5108 | } | |
5109 | } | |
5110 | ||
5111 | /* If we increased the packet size, make sure to increase the global | |
5112 | buffer size also. We delay this until after parsing the entire | |
5113 | qSupported packet, because this is the same buffer we were | |
5114 | parsing. */ | |
5115 | if (rs->buf_size < rs->explicit_packet_size) | |
5116 | { | |
5117 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 5118 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
5119 | } |
5120 | ||
5121 | /* Handle the defaults for unmentioned features. */ | |
5122 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5123 | if (!seen[i]) | |
5124 | { | |
5125 | const struct protocol_feature *feature; | |
5126 | ||
5127 | feature = &remote_protocol_features[i]; | |
5128 | feature->func (feature, feature->default_support, NULL); | |
5129 | } | |
5130 | } | |
5131 | ||
048094ac PA |
5132 | /* Serial QUIT handler for the remote serial descriptor. |
5133 | ||
5134 | Defers handling a Ctrl-C until we're done with the current | |
5135 | command/response packet sequence, unless: | |
5136 | ||
5137 | - We're setting up the connection. Don't send a remote interrupt | |
5138 | request, as we're not fully synced yet. Quit immediately | |
5139 | instead. | |
5140 | ||
5141 | - The target has been resumed in the foreground | |
223ffa71 | 5142 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5143 | packet, and we're blocked waiting for the stop reply, thus a |
5144 | Ctrl-C should be immediately sent to the target. | |
5145 | ||
5146 | - We get a second Ctrl-C while still within the same serial read or | |
5147 | write. In that case the serial is seemingly wedged --- offer to | |
5148 | quit/disconnect. | |
5149 | ||
5150 | - We see a second Ctrl-C without target response, after having | |
5151 | previously interrupted the target. In that case the target/stub | |
5152 | is probably wedged --- offer to quit/disconnect. | |
5153 | */ | |
5154 | ||
5155 | static void | |
5156 | remote_serial_quit_handler (void) | |
5157 | { | |
5158 | struct remote_state *rs = get_remote_state (); | |
5159 | ||
5160 | if (check_quit_flag ()) | |
5161 | { | |
5162 | /* If we're starting up, we're not fully synced yet. Quit | |
5163 | immediately. */ | |
5164 | if (rs->starting_up) | |
5165 | quit (); | |
5166 | else if (rs->got_ctrlc_during_io) | |
5167 | { | |
5168 | if (query (_("The target is not responding to GDB commands.\n" | |
5169 | "Stop debugging it? "))) | |
5170 | remote_unpush_and_throw (); | |
5171 | } | |
5172 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5173 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5174 | interrupt_query (); |
5175 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5176 | an interrupt request. */ | |
223ffa71 | 5177 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5178 | target_interrupt (); |
048094ac PA |
5179 | else |
5180 | rs->got_ctrlc_during_io = 1; | |
5181 | } | |
5182 | } | |
5183 | ||
78a095c3 JK |
5184 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
5185 | on it so remove them first. */ | |
5186 | ||
5187 | static void | |
5188 | remote_unpush_target (void) | |
5189 | { | |
915ef8b1 | 5190 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 5191 | } |
be2a5f71 | 5192 | |
048094ac PA |
5193 | static void |
5194 | remote_unpush_and_throw (void) | |
5195 | { | |
5196 | remote_unpush_target (); | |
5197 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
5198 | } | |
5199 | ||
f6ac5f3d PA |
5200 | void |
5201 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5202 | { |
d01949b6 | 5203 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 5204 | |
c906108c | 5205 | if (name == 0) |
8a3fe4f8 | 5206 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5207 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5208 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5209 | |
23860348 | 5210 | /* See FIXME above. */ |
c6ebd6cf | 5211 | if (!target_async_permitted) |
92d1e331 | 5212 | wait_forever_enabled_p = 1; |
6426a772 | 5213 | |
2d717e4f | 5214 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5215 | Ask this question first, before target_preopen has a chance to kill |
5216 | anything. */ | |
5d93a237 | 5217 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 5218 | { |
78a095c3 JK |
5219 | if (from_tty |
5220 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5221 | error (_("Still connected.")); |
5222 | } | |
5223 | ||
78a095c3 | 5224 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5225 | target_preopen (from_tty); |
5226 | ||
89be2091 | 5227 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
5228 | xfree (rs->last_pass_packet); |
5229 | rs->last_pass_packet = NULL; | |
89be2091 | 5230 | |
9b224c5e PA |
5231 | /* Make sure we send the program signals list the next time we |
5232 | resume. */ | |
5e4a05c4 TT |
5233 | xfree (rs->last_program_signals_packet); |
5234 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 5235 | |
ad9a8f3f | 5236 | remote_fileio_reset (); |
1dd41f16 NS |
5237 | reopen_exec_file (); |
5238 | reread_symbols (); | |
5239 | ||
5d93a237 TT |
5240 | rs->remote_desc = remote_serial_open (name); |
5241 | if (!rs->remote_desc) | |
c906108c SS |
5242 | perror_with_name (name); |
5243 | ||
5244 | if (baud_rate != -1) | |
5245 | { | |
5d93a237 | 5246 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5247 | { |
9b74d5d3 KB |
5248 | /* The requested speed could not be set. Error out to |
5249 | top level after closing remote_desc. Take care to | |
5250 | set remote_desc to NULL to avoid closing remote_desc | |
5251 | more than once. */ | |
5d93a237 TT |
5252 | serial_close (rs->remote_desc); |
5253 | rs->remote_desc = NULL; | |
c906108c SS |
5254 | perror_with_name (name); |
5255 | } | |
5256 | } | |
5257 | ||
236af5e3 | 5258 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5259 | serial_raw (rs->remote_desc); |
c906108c SS |
5260 | |
5261 | /* If there is something sitting in the buffer we might take it as a | |
5262 | response to a command, which would be bad. */ | |
5d93a237 | 5263 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5264 | |
5265 | if (from_tty) | |
5266 | { | |
5267 | puts_filtered ("Remote debugging using "); | |
5268 | puts_filtered (name); | |
5269 | puts_filtered ("\n"); | |
5270 | } | |
f6ac5f3d | 5271 | push_target (this); /* Switch to using remote target now. */ |
c906108c | 5272 | |
74531fed PA |
5273 | /* Register extra event sources in the event loop. */ |
5274 | remote_async_inferior_event_token | |
5275 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5276 | NULL); | |
5965e028 | 5277 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5278 | |
be2a5f71 DJ |
5279 | /* Reset the target state; these things will be queried either by |
5280 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5281 | reset_all_packet_configs_support (); |
74531fed | 5282 | rs->cached_wait_status = 0; |
be2a5f71 | 5283 | rs->explicit_packet_size = 0; |
a6f3e723 | 5284 | rs->noack_mode = 0; |
82f73884 | 5285 | rs->extended = extended_p; |
e24a49d8 | 5286 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5287 | rs->ctrlc_pending_p = 0; |
048094ac | 5288 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5289 | |
47f8a51d TT |
5290 | rs->general_thread = not_sent_ptid; |
5291 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5292 | rs->remote_traceframe_number = -1; |
c906108c | 5293 | |
3a00c802 PA |
5294 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5295 | ||
9d1f7ab2 | 5296 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5297 | rs->use_threadinfo_query = 1; |
5298 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5299 | |
80152258 PA |
5300 | readahead_cache_invalidate (); |
5301 | ||
c6ebd6cf | 5302 | if (target_async_permitted) |
92d1e331 | 5303 | { |
92d1e331 DJ |
5304 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5305 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5306 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5307 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5308 | around this. Eventually a mechanism that allows |
92d1e331 | 5309 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5310 | implemented. */ |
92d1e331 DJ |
5311 | wait_forever_enabled_p = 0; |
5312 | } | |
5313 | ||
23860348 | 5314 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5315 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5316 | |
74531fed PA |
5317 | /* Start afresh. */ |
5318 | init_thread_list (); | |
5319 | ||
36918e70 | 5320 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5321 | target (we'd otherwise be in an inconsistent state) and then |
5322 | propogate the error on up the exception chain. This ensures that | |
5323 | the caller doesn't stumble along blindly assuming that the | |
5324 | function succeeded. The CLI doesn't have this problem but other | |
5325 | UI's, such as MI do. | |
36918e70 AC |
5326 | |
5327 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5328 | this function should return an error indication letting the | |
ce2826aa | 5329 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5330 | ``target remote'' is directly wired to this function making that |
5331 | impossible. On a positive note, the CLI side of this problem has | |
5332 | been fixed - the function set_cmd_context() makes it possible for | |
5333 | all the ``target ....'' commands to share a common callback | |
5334 | function. See cli-dump.c. */ | |
109c3e39 | 5335 | { |
2d717e4f | 5336 | |
492d29ea | 5337 | TRY |
04bd08de | 5338 | { |
f6ac5f3d | 5339 | start_remote (from_tty, extended_p); |
04bd08de | 5340 | } |
492d29ea | 5341 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5342 | { |
c8d104ad PA |
5343 | /* Pop the partially set up target - unless something else did |
5344 | already before throwing the exception. */ | |
5d93a237 | 5345 | if (rs->remote_desc != NULL) |
78a095c3 | 5346 | remote_unpush_target (); |
c6ebd6cf | 5347 | if (target_async_permitted) |
109c3e39 AC |
5348 | wait_forever_enabled_p = 1; |
5349 | throw_exception (ex); | |
5350 | } | |
492d29ea | 5351 | END_CATCH |
109c3e39 | 5352 | } |
c906108c | 5353 | |
f4abbc16 MM |
5354 | remote_btrace_reset (); |
5355 | ||
c6ebd6cf | 5356 | if (target_async_permitted) |
92d1e331 | 5357 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5358 | } |
5359 | ||
de0d863e DB |
5360 | /* Detach the specified process. */ |
5361 | ||
5362 | static void | |
5363 | remote_detach_pid (int pid) | |
5364 | { | |
5365 | struct remote_state *rs = get_remote_state (); | |
5366 | ||
5367 | if (remote_multi_process_p (rs)) | |
5368 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5369 | else | |
5370 | strcpy (rs->buf, "D"); | |
5371 | ||
5372 | putpkt (rs->buf); | |
5373 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5374 | ||
5375 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5376 | ; | |
5377 | else if (rs->buf[0] == '\0') | |
5378 | error (_("Remote doesn't know how to detach")); | |
5379 | else | |
5380 | error (_("Can't detach process.")); | |
5381 | } | |
5382 | ||
5383 | /* This detaches a program to which we previously attached, using | |
5384 | inferior_ptid to identify the process. After this is done, GDB | |
5385 | can be used to debug some other program. We better not have left | |
5386 | any breakpoints in the target program or it'll die when it hits | |
5387 | one. */ | |
c906108c SS |
5388 | |
5389 | static void | |
6e1e1966 | 5390 | remote_detach_1 (int from_tty, inferior *inf) |
c906108c | 5391 | { |
82f73884 | 5392 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5393 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5394 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5395 | int is_fork_parent; | |
c906108c | 5396 | |
2d717e4f DJ |
5397 | if (!target_has_execution) |
5398 | error (_("No process to detach from.")); | |
5399 | ||
0f48b757 | 5400 | target_announce_detach (from_tty); |
7cee1e54 | 5401 | |
c906108c | 5402 | /* Tell the remote target to detach. */ |
de0d863e | 5403 | remote_detach_pid (pid); |
82f73884 | 5404 | |
8020350c DB |
5405 | /* Exit only if this is the only active inferior. */ |
5406 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5407 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5408 | |
de0d863e DB |
5409 | /* Check to see if we are detaching a fork parent. Note that if we |
5410 | are detaching a fork child, tp == NULL. */ | |
5411 | is_fork_parent = (tp != NULL | |
5412 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5413 | ||
5414 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5415 | breakpoints that should be available for the followed inferior. */ | |
5416 | if (!is_fork_parent) | |
f67c0c91 | 5417 | { |
249b5733 PA |
5418 | /* Save the pid as a string before mourning, since that will |
5419 | unpush the remote target, and we need the string after. */ | |
5420 | std::string infpid = target_pid_to_str (pid_to_ptid (pid)); | |
f67c0c91 SDJ |
5421 | |
5422 | target_mourn_inferior (inferior_ptid); | |
5423 | if (print_inferior_events) | |
5424 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5425 | inf->num, infpid.c_str ()); | |
5426 | } | |
de0d863e DB |
5427 | else |
5428 | { | |
5429 | inferior_ptid = null_ptid; | |
5430 | detach_inferior (pid); | |
5431 | } | |
2d717e4f DJ |
5432 | } |
5433 | ||
f6ac5f3d PA |
5434 | void |
5435 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5436 | { |
6e1e1966 | 5437 | remote_detach_1 (from_tty, inf); |
2d717e4f DJ |
5438 | } |
5439 | ||
f6ac5f3d PA |
5440 | void |
5441 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5442 | { |
6e1e1966 | 5443 | remote_detach_1 (from_tty, inf); |
de0d863e DB |
5444 | } |
5445 | ||
5446 | /* Target follow-fork function for remote targets. On entry, and | |
5447 | at return, the current inferior is the fork parent. | |
5448 | ||
5449 | Note that although this is currently only used for extended-remote, | |
5450 | it is named remote_follow_fork in anticipation of using it for the | |
5451 | remote target as well. */ | |
5452 | ||
f6ac5f3d PA |
5453 | int |
5454 | remote_target::follow_fork (int follow_child, int detach_fork) | |
de0d863e DB |
5455 | { |
5456 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5457 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5458 | |
c269dbdb DB |
5459 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5460 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5461 | { |
5462 | /* When following the parent and detaching the child, we detach | |
5463 | the child here. For the case of following the child and | |
5464 | detaching the parent, the detach is done in the target- | |
5465 | independent follow fork code in infrun.c. We can't use | |
5466 | target_detach when detaching an unfollowed child because | |
5467 | the client side doesn't know anything about the child. */ | |
5468 | if (detach_fork && !follow_child) | |
5469 | { | |
5470 | /* Detach the fork child. */ | |
5471 | ptid_t child_ptid; | |
5472 | pid_t child_pid; | |
5473 | ||
5474 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5475 | child_pid = ptid_get_pid (child_ptid); | |
5476 | ||
5477 | remote_detach_pid (child_pid); | |
de0d863e DB |
5478 | } |
5479 | } | |
5480 | return 0; | |
c906108c SS |
5481 | } |
5482 | ||
94585166 DB |
5483 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5484 | in the program space of the new inferior. On entry and at return the | |
5485 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5486 | inferior, which may be the same as the exec'ing inferior unless | |
5487 | follow-exec-mode is "new". */ | |
5488 | ||
f6ac5f3d PA |
5489 | void |
5490 | remote_target::follow_exec (struct inferior *inf, char *execd_pathname) | |
94585166 DB |
5491 | { |
5492 | /* We know that this is a target file name, so if it has the "target:" | |
5493 | prefix we strip it off before saving it in the program space. */ | |
5494 | if (is_target_filename (execd_pathname)) | |
5495 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5496 | ||
5497 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5498 | } | |
5499 | ||
6ad8ae5c DJ |
5500 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5501 | ||
f6ac5f3d PA |
5502 | void |
5503 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5504 | { |
43ff13b4 | 5505 | if (args) |
2d717e4f | 5506 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5507 | |
8020350c DB |
5508 | /* Make sure we unpush even the extended remote targets. Calling |
5509 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5510 | unpush if there is more than one inferior left. */ | |
f6ac5f3d | 5511 | unpush_target (this); |
8020350c | 5512 | generic_mourn_inferior (); |
2d717e4f | 5513 | |
43ff13b4 JM |
5514 | if (from_tty) |
5515 | puts_filtered ("Ending remote debugging.\n"); | |
5516 | } | |
5517 | ||
2d717e4f DJ |
5518 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5519 | be chatty about it. */ | |
5520 | ||
f6ac5f3d PA |
5521 | void |
5522 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5523 | { |
5524 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5525 | int pid; |
96ef3384 | 5526 | char *wait_status = NULL; |
2d717e4f | 5527 | |
74164c56 | 5528 | pid = parse_pid_to_attach (args); |
2d717e4f | 5529 | |
74164c56 JK |
5530 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5531 | way as in other targets. */ | |
2d717e4f | 5532 | |
4082afcc | 5533 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5534 | error (_("This target does not support attaching to a process")); |
5535 | ||
7cee1e54 PA |
5536 | if (from_tty) |
5537 | { | |
5538 | char *exec_file = get_exec_file (0); | |
5539 | ||
5540 | if (exec_file) | |
5541 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5542 | target_pid_to_str (pid_to_ptid (pid))); | |
5543 | else | |
5544 | printf_unfiltered (_("Attaching to %s\n"), | |
5545 | target_pid_to_str (pid_to_ptid (pid))); | |
5546 | ||
5547 | gdb_flush (gdb_stdout); | |
5548 | } | |
5549 | ||
bba74b36 | 5550 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5551 | putpkt (rs->buf); |
5552 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5553 | ||
4082afcc PA |
5554 | switch (packet_ok (rs->buf, |
5555 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5556 | { |
4082afcc | 5557 | case PACKET_OK: |
6efcd9a8 | 5558 | if (!target_is_non_stop_p ()) |
74531fed PA |
5559 | { |
5560 | /* Save the reply for later. */ | |
224c3ddb | 5561 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5562 | strcpy (wait_status, rs->buf); |
5563 | } | |
5564 | else if (strcmp (rs->buf, "OK") != 0) | |
5565 | error (_("Attaching to %s failed with: %s"), | |
5566 | target_pid_to_str (pid_to_ptid (pid)), | |
5567 | rs->buf); | |
4082afcc PA |
5568 | break; |
5569 | case PACKET_UNKNOWN: | |
5570 | error (_("This target does not support attaching to a process")); | |
5571 | default: | |
5572 | error (_("Attaching to %s failed"), | |
5573 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5574 | } |
2d717e4f | 5575 | |
1b6e6f5c | 5576 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5577 | |
2d717e4f | 5578 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5579 | |
6efcd9a8 | 5580 | if (target_is_non_stop_p ()) |
bad34192 PA |
5581 | { |
5582 | struct thread_info *thread; | |
79d7f229 | 5583 | |
bad34192 | 5584 | /* Get list of threads. */ |
f6ac5f3d | 5585 | update_thread_list (); |
82f73884 | 5586 | |
bad34192 PA |
5587 | thread = first_thread_of_process (pid); |
5588 | if (thread) | |
5589 | inferior_ptid = thread->ptid; | |
5590 | else | |
5591 | inferior_ptid = pid_to_ptid (pid); | |
5592 | ||
5593 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5594 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5595 | } |
74531fed | 5596 | else |
bad34192 PA |
5597 | { |
5598 | /* Now, if we have thread information, update inferior_ptid. */ | |
5599 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5600 | ||
5601 | /* Add the main thread to the thread list. */ | |
00aecdcf PA |
5602 | thread_info *thr = add_thread_silent (inferior_ptid); |
5603 | /* Don't consider the thread stopped until we've processed the | |
5604 | saved stop reply. */ | |
5605 | set_executing (thr->ptid, true); | |
bad34192 | 5606 | } |
c0a2216e | 5607 | |
96ef3384 UW |
5608 | /* Next, if the target can specify a description, read it. We do |
5609 | this before anything involving memory or registers. */ | |
5610 | target_find_description (); | |
5611 | ||
6efcd9a8 | 5612 | if (!target_is_non_stop_p ()) |
74531fed PA |
5613 | { |
5614 | /* Use the previously fetched status. */ | |
5615 | gdb_assert (wait_status != NULL); | |
5616 | ||
5617 | if (target_can_async_p ()) | |
5618 | { | |
722247f1 YQ |
5619 | struct notif_event *reply |
5620 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5621 | |
722247f1 | 5622 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5623 | |
6a3753b3 | 5624 | target_async (1); |
74531fed PA |
5625 | } |
5626 | else | |
5627 | { | |
5628 | gdb_assert (wait_status != NULL); | |
5629 | strcpy (rs->buf, wait_status); | |
5630 | rs->cached_wait_status = 1; | |
5631 | } | |
5632 | } | |
5633 | else | |
5634 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5635 | } |
5636 | ||
b9c1d481 AS |
5637 | /* Implementation of the to_post_attach method. */ |
5638 | ||
f6ac5f3d PA |
5639 | void |
5640 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5641 | { |
6efcd9a8 PA |
5642 | /* Get text, data & bss offsets. */ |
5643 | get_offsets (); | |
5644 | ||
b9c1d481 AS |
5645 | /* In certain cases GDB might not have had the chance to start |
5646 | symbol lookup up until now. This could happen if the debugged | |
5647 | binary is not using shared libraries, the vsyscall page is not | |
5648 | present (on Linux) and the binary itself hadn't changed since the | |
5649 | debugging process was started. */ | |
5650 | if (symfile_objfile != NULL) | |
5651 | remote_check_symbols(); | |
5652 | } | |
5653 | ||
c906108c | 5654 | \f |
506fb367 DJ |
5655 | /* Check for the availability of vCont. This function should also check |
5656 | the response. */ | |
c906108c SS |
5657 | |
5658 | static void | |
6d820c5c | 5659 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5660 | { |
2e9f7625 | 5661 | char *buf; |
6d820c5c | 5662 | |
2e9f7625 DJ |
5663 | strcpy (rs->buf, "vCont?"); |
5664 | putpkt (rs->buf); | |
6d820c5c | 5665 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5666 | buf = rs->buf; |
c906108c | 5667 | |
506fb367 | 5668 | /* Make sure that the features we assume are supported. */ |
61012eef | 5669 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5670 | { |
5671 | char *p = &buf[5]; | |
750ce8d1 | 5672 | int support_c, support_C; |
506fb367 | 5673 | |
750ce8d1 YQ |
5674 | rs->supports_vCont.s = 0; |
5675 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5676 | support_c = 0; |
5677 | support_C = 0; | |
d458bd84 | 5678 | rs->supports_vCont.t = 0; |
c1e36e3e | 5679 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5680 | while (p && *p == ';') |
5681 | { | |
5682 | p++; | |
5683 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5684 | rs->supports_vCont.s = 1; |
506fb367 | 5685 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5686 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5687 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5688 | support_c = 1; | |
5689 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5690 | support_C = 1; | |
74531fed | 5691 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5692 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5693 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5694 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5695 | |
5696 | p = strchr (p, ';'); | |
5697 | } | |
c906108c | 5698 | |
750ce8d1 YQ |
5699 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5700 | BUF will make packet_ok disable the packet. */ | |
5701 | if (!support_c || !support_C) | |
506fb367 DJ |
5702 | buf[0] = 0; |
5703 | } | |
c906108c | 5704 | |
444abaca | 5705 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5706 | } |
c906108c | 5707 | |
0d8f58ca PA |
5708 | /* Helper function for building "vCont" resumptions. Write a |
5709 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5710 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5711 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5712 | resumed thread should be single-stepped and/or signalled. If PTID | |
5713 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5714 | represents a process, then all threads of the process are resumed; | |
5715 | the thread to be stepped and/or signalled is given in the global | |
5716 | INFERIOR_PTID. */ | |
5717 | ||
5718 | static char * | |
5719 | append_resumption (char *p, char *endp, | |
2ea28649 | 5720 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5721 | { |
5722 | struct remote_state *rs = get_remote_state (); | |
5723 | ||
a493e3e2 | 5724 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5725 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5726 | else if (step |
5727 | /* GDB is willing to range step. */ | |
5728 | && use_range_stepping | |
5729 | /* Target supports range stepping. */ | |
5730 | && rs->supports_vCont.r | |
5731 | /* We don't currently support range stepping multiple | |
5732 | threads with a wildcard (though the protocol allows it, | |
5733 | so stubs shouldn't make an active effort to forbid | |
5734 | it). */ | |
5735 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5736 | { | |
5737 | struct thread_info *tp; | |
5738 | ||
5739 | if (ptid_equal (ptid, minus_one_ptid)) | |
5740 | { | |
5741 | /* If we don't know about the target thread's tid, then | |
5742 | we're resuming magic_null_ptid (see caller). */ | |
5743 | tp = find_thread_ptid (magic_null_ptid); | |
5744 | } | |
5745 | else | |
5746 | tp = find_thread_ptid (ptid); | |
5747 | gdb_assert (tp != NULL); | |
5748 | ||
5749 | if (tp->control.may_range_step) | |
5750 | { | |
5751 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5752 | ||
5753 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5754 | phex_nz (tp->control.step_range_start, | |
5755 | addr_size), | |
5756 | phex_nz (tp->control.step_range_end, | |
5757 | addr_size)); | |
5758 | } | |
5759 | else | |
5760 | p += xsnprintf (p, endp - p, ";s"); | |
5761 | } | |
0d8f58ca PA |
5762 | else if (step) |
5763 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5764 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5765 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5766 | else | |
5767 | p += xsnprintf (p, endp - p, ";c"); | |
5768 | ||
5769 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5770 | { | |
5771 | ptid_t nptid; | |
5772 | ||
5773 | /* All (-1) threads of process. */ | |
ba348170 | 5774 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5775 | |
5776 | p += xsnprintf (p, endp - p, ":"); | |
5777 | p = write_ptid (p, endp, nptid); | |
5778 | } | |
5779 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5780 | { | |
5781 | p += xsnprintf (p, endp - p, ":"); | |
5782 | p = write_ptid (p, endp, ptid); | |
5783 | } | |
5784 | ||
5785 | return p; | |
5786 | } | |
5787 | ||
799a2abe PA |
5788 | /* Clear the thread's private info on resume. */ |
5789 | ||
5790 | static void | |
5791 | resume_clear_thread_private_info (struct thread_info *thread) | |
5792 | { | |
5793 | if (thread->priv != NULL) | |
5794 | { | |
7aabaf9d SM |
5795 | remote_thread_info *priv = get_remote_thread_info (thread); |
5796 | ||
5797 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5798 | priv->watch_data_address = 0; | |
799a2abe PA |
5799 | } |
5800 | } | |
5801 | ||
e5ef252a PA |
5802 | /* Append a vCont continue-with-signal action for threads that have a |
5803 | non-zero stop signal. */ | |
5804 | ||
5805 | static char * | |
5806 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5807 | { | |
5808 | struct thread_info *thread; | |
5809 | ||
034f788c | 5810 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5811 | if (ptid_match (thread->ptid, ptid) |
5812 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5813 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5814 | { |
5815 | p = append_resumption (p, endp, thread->ptid, | |
5816 | 0, thread->suspend.stop_signal); | |
5817 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5818 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5819 | } |
5820 | ||
5821 | return p; | |
5822 | } | |
5823 | ||
7b68ffbb PA |
5824 | /* Set the target running, using the packets that use Hc |
5825 | (c/s/C/S). */ | |
5826 | ||
5827 | static void | |
5828 | remote_resume_with_hc (struct target_ops *ops, | |
5829 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5830 | { | |
5831 | struct remote_state *rs = get_remote_state (); | |
5832 | struct thread_info *thread; | |
5833 | char *buf; | |
5834 | ||
5835 | rs->last_sent_signal = siggnal; | |
5836 | rs->last_sent_step = step; | |
5837 | ||
5838 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5839 | thread. */ | |
5840 | if (ptid_equal (ptid, minus_one_ptid)) | |
5841 | set_continue_thread (any_thread_ptid); | |
5842 | else | |
5843 | set_continue_thread (ptid); | |
5844 | ||
5845 | ALL_NON_EXITED_THREADS (thread) | |
5846 | resume_clear_thread_private_info (thread); | |
5847 | ||
5848 | buf = rs->buf; | |
5849 | if (execution_direction == EXEC_REVERSE) | |
5850 | { | |
5851 | /* We don't pass signals to the target in reverse exec mode. */ | |
5852 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5853 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5854 | siggnal); | |
5855 | ||
5856 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5857 | error (_("Remote reverse-step not supported.")); | |
5858 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5859 | error (_("Remote reverse-continue not supported.")); | |
5860 | ||
5861 | strcpy (buf, step ? "bs" : "bc"); | |
5862 | } | |
5863 | else if (siggnal != GDB_SIGNAL_0) | |
5864 | { | |
5865 | buf[0] = step ? 'S' : 'C'; | |
5866 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5867 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5868 | buf[3] = '\0'; | |
5869 | } | |
5870 | else | |
5871 | strcpy (buf, step ? "s" : "c"); | |
5872 | ||
5873 | putpkt (buf); | |
5874 | } | |
5875 | ||
506fb367 DJ |
5876 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5877 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5878 | resumed thread should be single-stepped and/or signalled. If PTID |
5879 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5880 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5881 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5882 | |
7b68ffbb PA |
5883 | This function issues a strict subset of all possible vCont commands |
5884 | at the moment. */ | |
44eaed12 | 5885 | |
506fb367 | 5886 | static int |
7b68ffbb | 5887 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5888 | { |
5889 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5890 | char *p; |
5891 | char *endp; | |
44eaed12 | 5892 | |
7b68ffbb PA |
5893 | /* No reverse execution actions defined for vCont. */ |
5894 | if (execution_direction == EXEC_REVERSE) | |
5895 | return 0; | |
5896 | ||
4082afcc | 5897 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5898 | remote_vcont_probe (rs); |
44eaed12 | 5899 | |
4082afcc | 5900 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5901 | return 0; |
44eaed12 | 5902 | |
82f73884 PA |
5903 | p = rs->buf; |
5904 | endp = rs->buf + get_remote_packet_size (); | |
5905 | ||
506fb367 DJ |
5906 | /* If we could generate a wider range of packets, we'd have to worry |
5907 | about overflowing BUF. Should there be a generic | |
5908 | "multi-part-packet" packet? */ | |
5909 | ||
0d8f58ca PA |
5910 | p += xsnprintf (p, endp - p, "vCont"); |
5911 | ||
79d7f229 | 5912 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5913 | { |
79d7f229 PA |
5914 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5915 | so we don't have any TID numbers the inferior will | |
5916 | understand. Make sure to only send forms that do not specify | |
5917 | a TID. */ | |
a9cbf802 | 5918 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5919 | } |
0d8f58ca | 5920 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5921 | { |
0d8f58ca PA |
5922 | /* Resume all threads (of all processes, or of a single |
5923 | process), with preference for INFERIOR_PTID. This assumes | |
5924 | inferior_ptid belongs to the set of all threads we are about | |
5925 | to resume. */ | |
a493e3e2 | 5926 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5927 | { |
0d8f58ca PA |
5928 | /* Step inferior_ptid, with or without signal. */ |
5929 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5930 | } |
0d8f58ca | 5931 | |
e5ef252a PA |
5932 | /* Also pass down any pending signaled resumption for other |
5933 | threads not the current. */ | |
5934 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5935 | ||
0d8f58ca | 5936 | /* And continue others without a signal. */ |
a493e3e2 | 5937 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5938 | } |
5939 | else | |
506fb367 DJ |
5940 | { |
5941 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5942 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5943 | } |
c906108c | 5944 | |
82f73884 PA |
5945 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5946 | putpkt (rs->buf); | |
506fb367 | 5947 | |
6efcd9a8 | 5948 | if (target_is_non_stop_p ()) |
74531fed PA |
5949 | { |
5950 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5951 | reply will be reported asynchronously by means of a `%Stop' | |
5952 | notification. */ | |
5953 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5954 | if (strcmp (rs->buf, "OK") != 0) | |
5955 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5956 | } | |
5957 | ||
506fb367 | 5958 | return 1; |
c906108c | 5959 | } |
43ff13b4 | 5960 | |
506fb367 DJ |
5961 | /* Tell the remote machine to resume. */ |
5962 | ||
f6ac5f3d PA |
5963 | void |
5964 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 5965 | { |
d01949b6 | 5966 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 5967 | |
85ad3aaf PA |
5968 | /* When connected in non-stop mode, the core resumes threads |
5969 | individually. Resuming remote threads directly in target_resume | |
5970 | would thus result in sending one packet per thread. Instead, to | |
5971 | minimize roundtrip latency, here we just store the resume | |
5972 | request; the actual remote resumption will be done in | |
5973 | target_commit_resume / remote_commit_resume, where we'll be able | |
5974 | to do vCont action coalescing. */ | |
f6ac5f3d | 5975 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 5976 | { |
7aabaf9d | 5977 | remote_thread_info *remote_thr; |
85ad3aaf PA |
5978 | |
5979 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
7aabaf9d | 5980 | remote_thr = get_remote_thread_info (inferior_ptid); |
85ad3aaf | 5981 | else |
7aabaf9d SM |
5982 | remote_thr = get_remote_thread_info (ptid); |
5983 | ||
85ad3aaf PA |
5984 | remote_thr->last_resume_step = step; |
5985 | remote_thr->last_resume_sig = siggnal; | |
5986 | return; | |
5987 | } | |
5988 | ||
722247f1 YQ |
5989 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5990 | (explained in remote-notif.c:handle_notification) so | |
5991 | remote_notif_process is not called. We need find a place where | |
5992 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5993 | before resuming inferior, because inferior was stopped and no RSP | |
5994 | traffic at that moment. */ | |
6efcd9a8 | 5995 | if (!target_is_non_stop_p ()) |
5965e028 | 5996 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5997 | |
f6ac5f3d | 5998 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 5999 | |
7b68ffbb PA |
6000 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6001 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
f6ac5f3d | 6002 | remote_resume_with_hc (this, ptid, step, siggnal); |
43ff13b4 | 6003 | |
2acceee2 | 6004 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6005 | with the event loop. NOTE: this is the one place where all the |
6006 | execution commands end up. We could alternatively do this in each | |
23860348 | 6007 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6008 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6009 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6010 | NOT asynchronously. */ |
362646f5 | 6011 | if (target_can_async_p ()) |
6a3753b3 | 6012 | target_async (1); |
e24a49d8 PA |
6013 | |
6014 | /* We've just told the target to resume. The remote server will | |
6015 | wait for the inferior to stop, and then send a stop reply. In | |
6016 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6017 | because the stub wouldn't be ready to process it. This applies |
6018 | only to the base all-stop protocol, however. In non-stop (which | |
6019 | only supports vCont), the stub replies with an "OK", and is | |
6020 | immediate able to process further serial input. */ | |
6efcd9a8 | 6021 | if (!target_is_non_stop_p ()) |
74531fed | 6022 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6023 | } |
85ad3aaf PA |
6024 | |
6025 | static void check_pending_events_prevent_wildcard_vcont | |
6026 | (int *may_global_wildcard_vcont); | |
6027 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
6028 | ||
6029 | /* Private per-inferior info for target remote processes. */ | |
6030 | ||
089354bb | 6031 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6032 | { |
6033 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6034 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6035 | }; |
6036 | ||
089354bb SM |
6037 | /* Get the remote private inferior data associated to INF. */ |
6038 | ||
6039 | static remote_inferior * | |
6040 | get_remote_inferior (inferior *inf) | |
6041 | { | |
6042 | if (inf->priv == NULL) | |
6043 | inf->priv.reset (new remote_inferior); | |
6044 | ||
6045 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6046 | } | |
6047 | ||
85ad3aaf PA |
6048 | /* Structure used to track the construction of a vCont packet in the |
6049 | outgoing packet buffer. This is used to send multiple vCont | |
6050 | packets if we have more actions than would fit a single packet. */ | |
6051 | ||
6052 | struct vcont_builder | |
6053 | { | |
6054 | /* Pointer to the first action. P points here if no action has been | |
6055 | appended yet. */ | |
6056 | char *first_action; | |
6057 | ||
6058 | /* Where the next action will be appended. */ | |
6059 | char *p; | |
6060 | ||
6061 | /* The end of the buffer. Must never write past this. */ | |
6062 | char *endp; | |
6063 | }; | |
6064 | ||
6065 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6066 | ||
6067 | static void | |
6068 | vcont_builder_restart (struct vcont_builder *builder) | |
6069 | { | |
6070 | struct remote_state *rs = get_remote_state (); | |
6071 | ||
6072 | builder->p = rs->buf; | |
6073 | builder->endp = rs->buf + get_remote_packet_size (); | |
6074 | builder->p += xsnprintf (builder->p, builder->endp - builder->p, "vCont"); | |
6075 | builder->first_action = builder->p; | |
6076 | } | |
6077 | ||
6078 | /* If the vCont packet being built has any action, send it to the | |
6079 | remote end. */ | |
6080 | ||
6081 | static void | |
6082 | vcont_builder_flush (struct vcont_builder *builder) | |
6083 | { | |
6084 | struct remote_state *rs; | |
6085 | ||
6086 | if (builder->p == builder->first_action) | |
6087 | return; | |
6088 | ||
6089 | rs = get_remote_state (); | |
6090 | putpkt (rs->buf); | |
6091 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6092 | if (strcmp (rs->buf, "OK") != 0) | |
6093 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
6094 | } | |
6095 | ||
6096 | /* The largest action is range-stepping, with its two addresses. This | |
6097 | is more than sufficient. If a new, bigger action is created, it'll | |
6098 | quickly trigger a failed assertion in append_resumption (and we'll | |
6099 | just bump this). */ | |
6100 | #define MAX_ACTION_SIZE 200 | |
6101 | ||
6102 | /* Append a new vCont action in the outgoing packet being built. If | |
6103 | the action doesn't fit the packet along with previous actions, push | |
6104 | what we've got so far to the remote end and start over a new vCont | |
6105 | packet (with the new action). */ | |
6106 | ||
6107 | static void | |
6108 | vcont_builder_push_action (struct vcont_builder *builder, | |
6109 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
6110 | { | |
6111 | char buf[MAX_ACTION_SIZE + 1]; | |
6112 | char *endp; | |
6113 | size_t rsize; | |
6114 | ||
6115 | endp = append_resumption (buf, buf + sizeof (buf), | |
6116 | ptid, step, siggnal); | |
6117 | ||
6118 | /* Check whether this new action would fit in the vCont packet along | |
6119 | with previous actions. If not, send what we've got so far and | |
6120 | start a new vCont packet. */ | |
6121 | rsize = endp - buf; | |
6122 | if (rsize > builder->endp - builder->p) | |
6123 | { | |
6124 | vcont_builder_flush (builder); | |
6125 | vcont_builder_restart (builder); | |
6126 | ||
6127 | /* Should now fit. */ | |
6128 | gdb_assert (rsize <= builder->endp - builder->p); | |
6129 | } | |
6130 | ||
6131 | memcpy (builder->p, buf, rsize); | |
6132 | builder->p += rsize; | |
6133 | *builder->p = '\0'; | |
6134 | } | |
6135 | ||
6136 | /* to_commit_resume implementation. */ | |
6137 | ||
f6ac5f3d PA |
6138 | void |
6139 | remote_target::commit_resume () | |
85ad3aaf | 6140 | { |
85ad3aaf PA |
6141 | struct inferior *inf; |
6142 | struct thread_info *tp; | |
6143 | int any_process_wildcard; | |
6144 | int may_global_wildcard_vcont; | |
6145 | struct vcont_builder vcont_builder; | |
6146 | ||
6147 | /* If connected in all-stop mode, we'd send the remote resume | |
6148 | request directly from remote_resume. Likewise if | |
6149 | reverse-debugging, as there are no defined vCont actions for | |
6150 | reverse execution. */ | |
f6ac5f3d | 6151 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6152 | return; |
6153 | ||
6154 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6155 | instead of resuming all threads of each process individually. | |
6156 | However, if any thread of a process must remain halted, we can't | |
6157 | send wildcard resumes and must send one action per thread. | |
6158 | ||
6159 | Care must be taken to not resume threads/processes the server | |
6160 | side already told us are stopped, but the core doesn't know about | |
6161 | yet, because the events are still in the vStopped notification | |
6162 | queue. For example: | |
6163 | ||
6164 | #1 => vCont s:p1.1;c | |
6165 | #2 <= OK | |
6166 | #3 <= %Stopped T05 p1.1 | |
6167 | #4 => vStopped | |
6168 | #5 <= T05 p1.2 | |
6169 | #6 => vStopped | |
6170 | #7 <= OK | |
6171 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6172 | #9 => vCont s:p1.1;c | |
6173 | ||
6174 | The last vCont above would resume thread p1.2 by mistake, because | |
6175 | the server has no idea that the event for p1.2 had not been | |
6176 | handled yet. | |
6177 | ||
6178 | The server side must similarly ignore resume actions for the | |
6179 | thread that has a pending %Stopped notification (and any other | |
6180 | threads with events pending), until GDB acks the notification | |
6181 | with vStopped. Otherwise, e.g., the following case is | |
6182 | mishandled: | |
6183 | ||
6184 | #1 => g (or any other packet) | |
6185 | #2 <= [registers] | |
6186 | #3 <= %Stopped T05 p1.2 | |
6187 | #4 => vCont s:p1.1;c | |
6188 | #5 <= OK | |
6189 | ||
6190 | Above, the server must not resume thread p1.2. GDB can't know | |
6191 | that p1.2 stopped until it acks the %Stopped notification, and | |
6192 | since from GDB's perspective all threads should be running, it | |
6193 | sends a "c" action. | |
6194 | ||
6195 | Finally, special care must also be given to handling fork/vfork | |
6196 | events. A (v)fork event actually tells us that two processes | |
6197 | stopped -- the parent and the child. Until we follow the fork, | |
6198 | we must not resume the child. Therefore, if we have a pending | |
6199 | fork follow, we must not send a global wildcard resume action | |
6200 | (vCont;c). We can still send process-wide wildcards though. */ | |
6201 | ||
6202 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6203 | may_global_wildcard_vcont = 1; | |
6204 | ||
6205 | /* And assume every process is individually wildcard-able too. */ | |
6206 | ALL_NON_EXITED_INFERIORS (inf) | |
6207 | { | |
089354bb SM |
6208 | remote_inferior *priv = get_remote_inferior (inf); |
6209 | ||
6210 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6211 | } |
6212 | ||
6213 | /* Check for any pending events (not reported or processed yet) and | |
6214 | disable process and global wildcard resumes appropriately. */ | |
6215 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6216 | ||
6217 | ALL_NON_EXITED_THREADS (tp) | |
6218 | { | |
6219 | /* If a thread of a process is not meant to be resumed, then we | |
6220 | can't wildcard that process. */ | |
6221 | if (!tp->executing) | |
6222 | { | |
089354bb | 6223 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6224 | |
6225 | /* And if we can't wildcard a process, we can't wildcard | |
6226 | everything either. */ | |
6227 | may_global_wildcard_vcont = 0; | |
6228 | continue; | |
6229 | } | |
6230 | ||
6231 | /* If a thread is the parent of an unfollowed fork, then we | |
6232 | can't do a global wildcard, as that would resume the fork | |
6233 | child. */ | |
6234 | if (is_pending_fork_parent_thread (tp)) | |
6235 | may_global_wildcard_vcont = 0; | |
6236 | } | |
6237 | ||
6238 | /* Now let's build the vCont packet(s). Actions must be appended | |
6239 | from narrower to wider scopes (thread -> process -> global). If | |
6240 | we end up with too many actions for a single packet vcont_builder | |
6241 | flushes the current vCont packet to the remote side and starts a | |
6242 | new one. */ | |
6243 | vcont_builder_restart (&vcont_builder); | |
6244 | ||
6245 | /* Threads first. */ | |
6246 | ALL_NON_EXITED_THREADS (tp) | |
6247 | { | |
7aabaf9d | 6248 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6249 | |
6250 | if (!tp->executing || remote_thr->vcont_resumed) | |
6251 | continue; | |
6252 | ||
6253 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6254 | ||
6255 | if (!remote_thr->last_resume_step | |
6256 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6257 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6258 | { |
6259 | /* We'll send a wildcard resume instead. */ | |
6260 | remote_thr->vcont_resumed = 1; | |
6261 | continue; | |
6262 | } | |
6263 | ||
6264 | vcont_builder_push_action (&vcont_builder, tp->ptid, | |
6265 | remote_thr->last_resume_step, | |
6266 | remote_thr->last_resume_sig); | |
6267 | remote_thr->vcont_resumed = 1; | |
6268 | } | |
6269 | ||
6270 | /* Now check whether we can send any process-wide wildcard. This is | |
6271 | to avoid sending a global wildcard in the case nothing is | |
6272 | supposed to be resumed. */ | |
6273 | any_process_wildcard = 0; | |
6274 | ||
6275 | ALL_NON_EXITED_INFERIORS (inf) | |
6276 | { | |
089354bb | 6277 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6278 | { |
6279 | any_process_wildcard = 1; | |
6280 | break; | |
6281 | } | |
6282 | } | |
6283 | ||
6284 | if (any_process_wildcard) | |
6285 | { | |
6286 | /* If all processes are wildcard-able, then send a single "c" | |
6287 | action, otherwise, send an "all (-1) threads of process" | |
6288 | continue action for each running process, if any. */ | |
6289 | if (may_global_wildcard_vcont) | |
6290 | { | |
6291 | vcont_builder_push_action (&vcont_builder, minus_one_ptid, | |
6292 | 0, GDB_SIGNAL_0); | |
6293 | } | |
6294 | else | |
6295 | { | |
6296 | ALL_NON_EXITED_INFERIORS (inf) | |
6297 | { | |
089354bb | 6298 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6299 | { |
6300 | vcont_builder_push_action (&vcont_builder, | |
6301 | pid_to_ptid (inf->pid), | |
6302 | 0, GDB_SIGNAL_0); | |
6303 | } | |
6304 | } | |
6305 | } | |
6306 | } | |
6307 | ||
6308 | vcont_builder_flush (&vcont_builder); | |
6309 | } | |
6310 | ||
c906108c | 6311 | \f |
43ff13b4 | 6312 | |
74531fed PA |
6313 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6314 | thread, all threads of a remote process, or all threads of all | |
6315 | processes. */ | |
6316 | ||
6317 | static void | |
6318 | remote_stop_ns (ptid_t ptid) | |
6319 | { | |
6320 | struct remote_state *rs = get_remote_state (); | |
6321 | char *p = rs->buf; | |
6322 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6323 | |
4082afcc | 6324 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6325 | remote_vcont_probe (rs); |
6326 | ||
d458bd84 | 6327 | if (!rs->supports_vCont.t) |
74531fed PA |
6328 | error (_("Remote server does not support stopping threads")); |
6329 | ||
f91d3df5 PA |
6330 | if (ptid_equal (ptid, minus_one_ptid) |
6331 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6332 | p += xsnprintf (p, endp - p, "vCont;t"); |
6333 | else | |
6334 | { | |
6335 | ptid_t nptid; | |
6336 | ||
74531fed PA |
6337 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6338 | ||
6339 | if (ptid_is_pid (ptid)) | |
6340 | /* All (-1) threads of process. */ | |
ba348170 | 6341 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6342 | else |
6343 | { | |
6344 | /* Small optimization: if we already have a stop reply for | |
6345 | this thread, no use in telling the stub we want this | |
6346 | stopped. */ | |
6347 | if (peek_stop_reply (ptid)) | |
6348 | return; | |
6349 | ||
6350 | nptid = ptid; | |
6351 | } | |
6352 | ||
a9cbf802 | 6353 | write_ptid (p, endp, nptid); |
74531fed PA |
6354 | } |
6355 | ||
6356 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6357 | come in asynchronously by notification. */ | |
6358 | putpkt (rs->buf); | |
6359 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6360 | if (strcmp (rs->buf, "OK") != 0) | |
6361 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6362 | } | |
6363 | ||
bfedc46a PA |
6364 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6365 | interrupt the remote target. It is undefined which thread of which | |
6366 | process reports the interrupt. */ | |
74531fed PA |
6367 | |
6368 | static void | |
de979965 | 6369 | remote_interrupt_as (void) |
74531fed PA |
6370 | { |
6371 | struct remote_state *rs = get_remote_state (); | |
6372 | ||
3a29589a DJ |
6373 | rs->ctrlc_pending_p = 1; |
6374 | ||
74531fed PA |
6375 | /* If the inferior is stopped already, but the core didn't know |
6376 | about it yet, just ignore the request. The cached wait status | |
6377 | will be collected in remote_wait. */ | |
6378 | if (rs->cached_wait_status) | |
6379 | return; | |
6380 | ||
9a7071a8 JB |
6381 | /* Send interrupt_sequence to remote target. */ |
6382 | send_interrupt_sequence (); | |
74531fed PA |
6383 | } |
6384 | ||
de979965 PA |
6385 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6386 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6387 | reports the interrupt. Throws an error if the packet is not |
6388 | supported by the server. */ | |
de979965 | 6389 | |
e42de8c7 | 6390 | static void |
de979965 PA |
6391 | remote_interrupt_ns (void) |
6392 | { | |
6393 | struct remote_state *rs = get_remote_state (); | |
6394 | char *p = rs->buf; | |
6395 | char *endp = rs->buf + get_remote_packet_size (); | |
6396 | ||
6397 | xsnprintf (p, endp - p, "vCtrlC"); | |
6398 | ||
6399 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6400 | come in asynchronously by notification. */ | |
6401 | putpkt (rs->buf); | |
6402 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6403 | ||
6404 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6405 | { | |
6406 | case PACKET_OK: | |
6407 | break; | |
6408 | case PACKET_UNKNOWN: | |
e42de8c7 | 6409 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6410 | case PACKET_ERROR: |
6411 | error (_("Interrupting target failed: %s"), rs->buf); | |
6412 | } | |
de979965 PA |
6413 | } |
6414 | ||
bfedc46a | 6415 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6416 | |
f6ac5f3d PA |
6417 | void |
6418 | remote_target::stop (ptid_t ptid) | |
c906108c | 6419 | { |
7a292a7a | 6420 | if (remote_debug) |
0f71a2f6 | 6421 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6422 | |
6efcd9a8 | 6423 | if (target_is_non_stop_p ()) |
74531fed | 6424 | remote_stop_ns (ptid); |
c906108c | 6425 | else |
bfedc46a PA |
6426 | { |
6427 | /* We don't currently have a way to transparently pause the | |
6428 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6429 | remote_interrupt_as (); |
bfedc46a PA |
6430 | } |
6431 | } | |
6432 | ||
6433 | /* Implement the to_interrupt function for the remote targets. */ | |
6434 | ||
f6ac5f3d PA |
6435 | void |
6436 | remote_target::interrupt () | |
bfedc46a PA |
6437 | { |
6438 | if (remote_debug) | |
6439 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6440 | ||
e42de8c7 PA |
6441 | if (target_is_non_stop_p ()) |
6442 | remote_interrupt_ns (); | |
bfedc46a | 6443 | else |
e42de8c7 | 6444 | remote_interrupt_as (); |
c906108c SS |
6445 | } |
6446 | ||
93692b58 PA |
6447 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6448 | ||
f6ac5f3d PA |
6449 | void |
6450 | remote_target::pass_ctrlc () | |
93692b58 PA |
6451 | { |
6452 | struct remote_state *rs = get_remote_state (); | |
6453 | ||
6454 | if (remote_debug) | |
6455 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6456 | ||
6457 | /* If we're starting up, we're not fully synced yet. Quit | |
6458 | immediately. */ | |
6459 | if (rs->starting_up) | |
6460 | quit (); | |
6461 | /* If ^C has already been sent once, offer to disconnect. */ | |
6462 | else if (rs->ctrlc_pending_p) | |
6463 | interrupt_query (); | |
6464 | else | |
e671cd59 | 6465 | target_interrupt (); |
93692b58 PA |
6466 | } |
6467 | ||
c906108c SS |
6468 | /* Ask the user what to do when an interrupt is received. */ |
6469 | ||
6470 | static void | |
fba45db2 | 6471 | interrupt_query (void) |
c906108c | 6472 | { |
abc56d60 | 6473 | struct remote_state *rs = get_remote_state (); |
c906108c | 6474 | |
abc56d60 | 6475 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6476 | { |
abc56d60 PA |
6477 | if (query (_("The target is not responding to interrupt requests.\n" |
6478 | "Stop debugging it? "))) | |
74531fed | 6479 | { |
78a095c3 | 6480 | remote_unpush_target (); |
abc56d60 | 6481 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6482 | } |
6483 | } | |
abc56d60 PA |
6484 | else |
6485 | { | |
6486 | if (query (_("Interrupted while waiting for the program.\n" | |
6487 | "Give up waiting? "))) | |
6488 | quit (); | |
6489 | } | |
c906108c SS |
6490 | } |
6491 | ||
6426a772 JM |
6492 | /* Enable/disable target terminal ownership. Most targets can use |
6493 | terminal groups to control terminal ownership. Remote targets are | |
6494 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6495 | is required. */ |
6426a772 | 6496 | |
f6ac5f3d PA |
6497 | void |
6498 | remote_target::terminal_inferior () | |
6426a772 | 6499 | { |
6426a772 JM |
6500 | /* NOTE: At this point we could also register our selves as the |
6501 | recipient of all input. Any characters typed could then be | |
23860348 | 6502 | passed on down to the target. */ |
6426a772 JM |
6503 | } |
6504 | ||
f6ac5f3d PA |
6505 | void |
6506 | remote_target::terminal_ours () | |
6426a772 | 6507 | { |
6426a772 JM |
6508 | } |
6509 | ||
176a6961 | 6510 | static void |
917317f4 | 6511 | remote_console_output (char *msg) |
c906108c SS |
6512 | { |
6513 | char *p; | |
6514 | ||
c5aa993b | 6515 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6516 | { |
6517 | char tb[2]; | |
6518 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6519 | |
c906108c SS |
6520 | tb[0] = c; |
6521 | tb[1] = 0; | |
43ff13b4 | 6522 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6523 | } |
00db5b94 PA |
6524 | gdb_flush (gdb_stdtarg); |
6525 | } | |
74531fed | 6526 | |
74531fed PA |
6527 | DEF_VEC_O(cached_reg_t); |
6528 | ||
722247f1 | 6529 | typedef struct stop_reply |
74531fed | 6530 | { |
722247f1 | 6531 | struct notif_event base; |
74531fed | 6532 | |
722247f1 | 6533 | /* The identifier of the thread about this event */ |
74531fed PA |
6534 | ptid_t ptid; |
6535 | ||
340e3c99 | 6536 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6537 | connection, represented by a remote_state object, is closed, |
6538 | all the associated stop_reply events should be released. */ | |
6539 | struct remote_state *rs; | |
6540 | ||
74531fed PA |
6541 | struct target_waitstatus ws; |
6542 | ||
5cd63fda PA |
6543 | /* The architecture associated with the expedited registers. */ |
6544 | gdbarch *arch; | |
6545 | ||
15148d6a PA |
6546 | /* Expedited registers. This makes remote debugging a bit more |
6547 | efficient for those targets that provide critical registers as | |
6548 | part of their normal status mechanism (as another roundtrip to | |
6549 | fetch them is avoided). */ | |
74531fed PA |
6550 | VEC(cached_reg_t) *regcache; |
6551 | ||
f7e6eed5 PA |
6552 | enum target_stop_reason stop_reason; |
6553 | ||
74531fed PA |
6554 | CORE_ADDR watch_data_address; |
6555 | ||
dc146f7c | 6556 | int core; |
722247f1 | 6557 | } *stop_reply_p; |
a744cf53 | 6558 | |
722247f1 YQ |
6559 | DECLARE_QUEUE_P (stop_reply_p); |
6560 | DEFINE_QUEUE_P (stop_reply_p); | |
6561 | /* The list of already fetched and acknowledged stop events. This | |
6562 | queue is used for notification Stop, and other notifications | |
6563 | don't need queue for their events, because the notification events | |
6564 | of Stop can't be consumed immediately, so that events should be | |
6565 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6566 | time. Other notifications can consume their events immediately, | |
6567 | so queue is not needed for them. */ | |
6568 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6569 | |
6570 | static void | |
6571 | stop_reply_xfree (struct stop_reply *r) | |
6572 | { | |
f48ff2a7 | 6573 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6574 | } |
6575 | ||
221e1a37 PA |
6576 | /* Return the length of the stop reply queue. */ |
6577 | ||
6578 | static int | |
6579 | stop_reply_queue_length (void) | |
6580 | { | |
6581 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6582 | } | |
6583 | ||
722247f1 YQ |
6584 | static void |
6585 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6586 | struct notif_event *event) | |
6587 | { | |
6588 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6589 | } | |
6590 | ||
6591 | static void | |
6592 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6593 | struct notif_event *event) | |
6594 | { | |
6595 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6596 | ||
6597 | /* acknowledge */ | |
f5c4fcd9 | 6598 | putpkt (self->ack_command); |
722247f1 YQ |
6599 | |
6600 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6601 | /* We got an unknown stop reply. */ | |
6602 | error (_("Unknown stop reply")); | |
6603 | ||
6604 | push_stop_reply (stop_reply); | |
6605 | } | |
6606 | ||
6607 | static int | |
6608 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6609 | { | |
6610 | /* We can't get pending events in remote_notif_process for | |
6611 | notification stop, and we have to do this in remote_wait_ns | |
6612 | instead. If we fetch all queued events from stub, remote stub | |
6613 | may exit and we have no chance to process them back in | |
6614 | remote_wait_ns. */ | |
6615 | mark_async_event_handler (remote_async_inferior_event_token); | |
6616 | return 0; | |
6617 | } | |
6618 | ||
6619 | static void | |
6620 | stop_reply_dtr (struct notif_event *event) | |
6621 | { | |
6622 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6623 | cached_reg_t *reg; |
6624 | int ix; | |
6625 | ||
6626 | for (ix = 0; | |
6627 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6628 | ix++) | |
6629 | xfree (reg->data); | |
722247f1 YQ |
6630 | |
6631 | VEC_free (cached_reg_t, r->regcache); | |
6632 | } | |
6633 | ||
6634 | static struct notif_event * | |
6635 | remote_notif_stop_alloc_reply (void) | |
6636 | { | |
8d749320 SM |
6637 | /* We cast to a pointer to the "base class". */ |
6638 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6639 | |
6640 | r->dtr = stop_reply_dtr; | |
6641 | ||
6642 | return r; | |
6643 | } | |
6644 | ||
6645 | /* A client of notification Stop. */ | |
6646 | ||
6647 | struct notif_client notif_client_stop = | |
6648 | { | |
6649 | "Stop", | |
6650 | "vStopped", | |
6651 | remote_notif_stop_parse, | |
6652 | remote_notif_stop_ack, | |
6653 | remote_notif_stop_can_get_pending_events, | |
6654 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6655 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6656 | }; |
6657 | ||
6658 | /* A parameter to pass data in and out. */ | |
6659 | ||
6660 | struct queue_iter_param | |
6661 | { | |
6662 | void *input; | |
6663 | struct stop_reply *output; | |
6664 | }; | |
6665 | ||
85ad3aaf | 6666 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6667 | the pid of the process that owns the threads we want to check, or |
6668 | -1 if we want to check all threads. */ | |
6669 | ||
6670 | static int | |
6671 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6672 | ptid_t thread_ptid) | |
6673 | { | |
6674 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6675 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6676 | { | |
6677 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6678 | return 1; | |
6679 | } | |
6680 | ||
6681 | return 0; | |
6682 | } | |
6683 | ||
85ad3aaf PA |
6684 | /* Return the thread's pending status used to determine whether the |
6685 | thread is a fork parent stopped at a fork event. */ | |
6686 | ||
6687 | static struct target_waitstatus * | |
6688 | thread_pending_fork_status (struct thread_info *thread) | |
6689 | { | |
6690 | if (thread->suspend.waitstatus_pending_p) | |
6691 | return &thread->suspend.waitstatus; | |
6692 | else | |
6693 | return &thread->pending_follow; | |
6694 | } | |
6695 | ||
6696 | /* Determine if THREAD is a pending fork parent thread. */ | |
6697 | ||
6698 | static int | |
6699 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6700 | { | |
6701 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6702 | int pid = -1; | |
6703 | ||
6704 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6705 | } | |
6706 | ||
cbb8991c DB |
6707 | /* Check whether EVENT is a fork event, and if it is, remove the |
6708 | fork child from the context list passed in DATA. */ | |
6709 | ||
6710 | static int | |
6711 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6712 | QUEUE_ITER (stop_reply_p) *iter, | |
6713 | stop_reply_p event, | |
6714 | void *data) | |
6715 | { | |
19ba03f4 SM |
6716 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6717 | struct threads_listing_context *context | |
6718 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6719 | |
6720 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6721 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6722 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
21fe1c75 | 6723 | context->remove_thread (event->ws.value.related_pid); |
cbb8991c DB |
6724 | |
6725 | return 1; | |
6726 | } | |
6727 | ||
6728 | /* If CONTEXT contains any fork child threads that have not been | |
6729 | reported yet, remove them from the CONTEXT list. If such a | |
6730 | thread exists it is because we are stopped at a fork catchpoint | |
6731 | and have not yet called follow_fork, which will set up the | |
6732 | host-side data structures for the new process. */ | |
6733 | ||
6734 | static void | |
6735 | remove_new_fork_children (struct threads_listing_context *context) | |
6736 | { | |
6737 | struct thread_info * thread; | |
6738 | int pid = -1; | |
6739 | struct notif_client *notif = ¬if_client_stop; | |
6740 | struct queue_iter_param param; | |
6741 | ||
6742 | /* For any threads stopped at a fork event, remove the corresponding | |
6743 | fork child threads from the CONTEXT list. */ | |
6744 | ALL_NON_EXITED_THREADS (thread) | |
6745 | { | |
85ad3aaf | 6746 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6747 | |
6748 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 6749 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
6750 | } |
6751 | ||
6752 | /* Check for any pending fork events (not reported or processed yet) | |
6753 | in process PID and remove those fork child threads from the | |
6754 | CONTEXT list as well. */ | |
6755 | remote_notif_get_pending_events (notif); | |
6756 | param.input = context; | |
6757 | param.output = NULL; | |
6758 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6759 | remove_child_of_pending_fork, ¶m); | |
6760 | } | |
6761 | ||
85ad3aaf PA |
6762 | /* Check whether EVENT would prevent a global or process wildcard |
6763 | vCont action. */ | |
6764 | ||
6765 | static int | |
6766 | check_pending_event_prevents_wildcard_vcont_callback | |
6767 | (QUEUE (stop_reply_p) *q, | |
6768 | QUEUE_ITER (stop_reply_p) *iter, | |
6769 | stop_reply_p event, | |
6770 | void *data) | |
6771 | { | |
6772 | struct inferior *inf; | |
6773 | int *may_global_wildcard_vcont = (int *) data; | |
6774 | ||
6775 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6776 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6777 | return 1; | |
6778 | ||
6779 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6780 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6781 | *may_global_wildcard_vcont = 0; | |
6782 | ||
6783 | inf = find_inferior_ptid (event->ptid); | |
6784 | ||
6785 | /* This may be the first time we heard about this process. | |
6786 | Regardless, we must not do a global wildcard resume, otherwise | |
6787 | we'd resume this process too. */ | |
6788 | *may_global_wildcard_vcont = 0; | |
6789 | if (inf != NULL) | |
089354bb | 6790 | get_remote_inferior (inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6791 | |
6792 | return 1; | |
6793 | } | |
6794 | ||
6795 | /* Check whether any event pending in the vStopped queue would prevent | |
6796 | a global or process wildcard vCont action. Clear | |
6797 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6798 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6799 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6800 | ||
6801 | static void | |
6802 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6803 | { | |
6804 | struct notif_client *notif = ¬if_client_stop; | |
6805 | ||
6806 | remote_notif_get_pending_events (notif); | |
6807 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6808 | check_pending_event_prevents_wildcard_vcont_callback, | |
6809 | may_global_wildcard); | |
6810 | } | |
6811 | ||
f48ff2a7 YQ |
6812 | /* Remove stop replies in the queue if its pid is equal to the given |
6813 | inferior's pid. */ | |
722247f1 YQ |
6814 | |
6815 | static int | |
f48ff2a7 YQ |
6816 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6817 | QUEUE_ITER (stop_reply_p) *iter, | |
6818 | stop_reply_p event, | |
6819 | void *data) | |
722247f1 | 6820 | { |
19ba03f4 SM |
6821 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6822 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6823 | |
f48ff2a7 | 6824 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6825 | { |
6826 | stop_reply_xfree (event); | |
6827 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6828 | } | |
6829 | ||
6830 | return 1; | |
6831 | } | |
6832 | ||
f48ff2a7 | 6833 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6834 | |
74531fed | 6835 | static void |
5f4cf0bb | 6836 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6837 | { |
722247f1 | 6838 | struct queue_iter_param param; |
f48ff2a7 YQ |
6839 | struct stop_reply *reply; |
6840 | struct remote_state *rs = get_remote_state (); | |
6841 | struct remote_notif_state *rns = rs->notif_state; | |
6842 | ||
6843 | /* This function can be notified when an inferior exists. When the | |
6844 | target is not remote, the notification state is NULL. */ | |
6845 | if (rs->remote_desc == NULL) | |
6846 | return; | |
6847 | ||
6848 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6849 | |
74531fed | 6850 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6851 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6852 | { |
722247f1 | 6853 | stop_reply_xfree (reply); |
f48ff2a7 | 6854 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6855 | } |
c906108c | 6856 | |
722247f1 YQ |
6857 | param.input = inf; |
6858 | param.output = NULL; | |
74531fed PA |
6859 | /* Discard the stop replies we have already pulled with |
6860 | vStopped. */ | |
722247f1 | 6861 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6862 | remove_stop_reply_for_inferior, ¶m); |
6863 | } | |
6864 | ||
bcc75809 YQ |
6865 | /* If its remote state is equal to the given remote state, |
6866 | remove EVENT from the stop reply queue. */ | |
6867 | ||
6868 | static int | |
6869 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6870 | QUEUE_ITER (stop_reply_p) *iter, | |
6871 | stop_reply_p event, | |
6872 | void *data) | |
6873 | { | |
19ba03f4 SM |
6874 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6875 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6876 | |
6877 | if (event->rs == rs) | |
6878 | { | |
6879 | stop_reply_xfree (event); | |
6880 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6881 | } | |
6882 | ||
6883 | return 1; | |
6884 | } | |
6885 | ||
6886 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6887 | |
6888 | static void | |
bcc75809 | 6889 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6890 | { |
6891 | struct queue_iter_param param; | |
6892 | ||
bcc75809 | 6893 | param.input = rs; |
f48ff2a7 YQ |
6894 | param.output = NULL; |
6895 | /* Discard the stop replies we have already pulled with | |
6896 | vStopped. */ | |
6897 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6898 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6899 | } |
74531fed | 6900 | |
722247f1 YQ |
6901 | /* A parameter to pass data in and out. */ |
6902 | ||
6903 | static int | |
6904 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6905 | QUEUE_ITER (stop_reply_p) *iter, | |
6906 | stop_reply_p event, | |
6907 | void *data) | |
6908 | { | |
19ba03f4 SM |
6909 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6910 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6911 | |
6912 | if (ptid_match (event->ptid, *ptid)) | |
6913 | { | |
6914 | param->output = event; | |
6915 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6916 | return 0; | |
c8e38a49 | 6917 | } |
722247f1 YQ |
6918 | |
6919 | return 1; | |
74531fed | 6920 | } |
43ff13b4 | 6921 | |
722247f1 YQ |
6922 | /* Remove the first reply in 'stop_reply_queue' which matches |
6923 | PTID. */ | |
2e9f7625 | 6924 | |
722247f1 YQ |
6925 | static struct stop_reply * |
6926 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6927 | { |
722247f1 YQ |
6928 | struct queue_iter_param param; |
6929 | ||
6930 | param.input = &ptid; | |
6931 | param.output = NULL; | |
6932 | ||
6933 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6934 | remote_notif_remove_once_on_match, ¶m); | |
6935 | if (notif_debug) | |
6936 | fprintf_unfiltered (gdb_stdlog, | |
6937 | "notif: discard queued event: 'Stop' in %s\n", | |
6938 | target_pid_to_str (ptid)); | |
a744cf53 | 6939 | |
722247f1 | 6940 | return param.output; |
74531fed | 6941 | } |
75c99385 | 6942 | |
74531fed PA |
6943 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6944 | remove it from the queue, and return it. Returns NULL if none is | |
6945 | found. If there are still queued events left to process, tell the | |
6946 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6947 | |
74531fed PA |
6948 | static struct stop_reply * |
6949 | queued_stop_reply (ptid_t ptid) | |
6950 | { | |
722247f1 | 6951 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6952 | |
722247f1 | 6953 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6954 | /* There's still at least an event left. */ |
6955 | mark_async_event_handler (remote_async_inferior_event_token); | |
6956 | ||
722247f1 | 6957 | return r; |
74531fed PA |
6958 | } |
6959 | ||
6960 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6961 | know that we now have at least one queued event left to pass to the | |
6962 | core side, tell the event loop to get back to target_wait soon. */ | |
6963 | ||
6964 | static void | |
6965 | push_stop_reply (struct stop_reply *new_event) | |
6966 | { | |
722247f1 | 6967 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6968 | |
722247f1 YQ |
6969 | if (notif_debug) |
6970 | fprintf_unfiltered (gdb_stdlog, | |
6971 | "notif: push 'Stop' %s to queue %d\n", | |
6972 | target_pid_to_str (new_event->ptid), | |
6973 | QUEUE_length (stop_reply_p, | |
6974 | stop_reply_queue)); | |
74531fed PA |
6975 | |
6976 | mark_async_event_handler (remote_async_inferior_event_token); | |
6977 | } | |
6978 | ||
722247f1 YQ |
6979 | static int |
6980 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6981 | QUEUE_ITER (stop_reply_p) *iter, | |
6982 | struct stop_reply *event, | |
6983 | void *data) | |
6984 | { | |
19ba03f4 | 6985 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6986 | |
6987 | return !(ptid_equal (*ptid, event->ptid) | |
6988 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6989 | } | |
6990 | ||
74531fed PA |
6991 | /* Returns true if we have a stop reply for PTID. */ |
6992 | ||
6993 | static int | |
6994 | peek_stop_reply (ptid_t ptid) | |
6995 | { | |
722247f1 YQ |
6996 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6997 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6998 | } |
6999 | ||
26d56a93 SL |
7000 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7001 | starting with P and ending with PEND matches PREFIX. */ | |
7002 | ||
7003 | static int | |
7004 | strprefix (const char *p, const char *pend, const char *prefix) | |
7005 | { | |
7006 | for ( ; p < pend; p++, prefix++) | |
7007 | if (*p != *prefix) | |
7008 | return 0; | |
7009 | return *prefix == '\0'; | |
7010 | } | |
7011 | ||
74531fed PA |
7012 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7013 | result is stored in EVENT, or throws an error. */ | |
7014 | ||
7015 | static void | |
7016 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
7017 | { | |
5cd63fda | 7018 | remote_arch_state *rsa = NULL; |
74531fed | 7019 | ULONGEST addr; |
256642e8 | 7020 | const char *p; |
94585166 | 7021 | int skipregs = 0; |
74531fed PA |
7022 | |
7023 | event->ptid = null_ptid; | |
bcc75809 | 7024 | event->rs = get_remote_state (); |
74531fed PA |
7025 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7026 | event->ws.value.integer = 0; | |
f7e6eed5 | 7027 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 7028 | event->regcache = NULL; |
dc146f7c | 7029 | event->core = -1; |
74531fed PA |
7030 | |
7031 | switch (buf[0]) | |
7032 | { | |
7033 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7034 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7035 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7036 | ss = signal number | |
7037 | n... = register number | |
7038 | r... = register contents | |
7039 | */ | |
7040 | ||
7041 | p = &buf[3]; /* after Txx */ | |
7042 | while (*p) | |
7043 | { | |
256642e8 | 7044 | const char *p1; |
cea39f65 | 7045 | int fieldsize; |
43ff13b4 | 7046 | |
1f10ba14 PA |
7047 | p1 = strchr (p, ':'); |
7048 | if (p1 == NULL) | |
7049 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7050 | Packet: '%s'\n"), | |
7051 | p, buf); | |
7052 | if (p == p1) | |
7053 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7054 | Packet: '%s'\n"), | |
7055 | p, buf); | |
3c3bea1c | 7056 | |
1f10ba14 PA |
7057 | /* Some "registers" are actually extended stop information. |
7058 | Note if you're adding a new entry here: GDB 7.9 and | |
7059 | earlier assume that all register "numbers" that start | |
7060 | with an hex digit are real register numbers. Make sure | |
7061 | the server only sends such a packet if it knows the | |
7062 | client understands it. */ | |
c8e38a49 | 7063 | |
26d56a93 | 7064 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7065 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7066 | else if (strprefix (p, p1, "syscall_entry")) |
7067 | { | |
7068 | ULONGEST sysno; | |
7069 | ||
7070 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7071 | p = unpack_varlen_hex (++p1, &sysno); | |
7072 | event->ws.value.syscall_number = (int) sysno; | |
7073 | } | |
7074 | else if (strprefix (p, p1, "syscall_return")) | |
7075 | { | |
7076 | ULONGEST sysno; | |
7077 | ||
7078 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7079 | p = unpack_varlen_hex (++p1, &sysno); | |
7080 | event->ws.value.syscall_number = (int) sysno; | |
7081 | } | |
26d56a93 SL |
7082 | else if (strprefix (p, p1, "watch") |
7083 | || strprefix (p, p1, "rwatch") | |
7084 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7085 | { |
f7e6eed5 | 7086 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7087 | p = unpack_varlen_hex (++p1, &addr); |
7088 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7089 | } |
26d56a93 | 7090 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7091 | { |
7092 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7093 | ||
7094 | /* Make sure the stub doesn't forget to indicate support | |
7095 | with qSupported. */ | |
7096 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7097 | error (_("Unexpected swbreak stop reason")); | |
7098 | ||
7099 | /* The value part is documented as "must be empty", | |
7100 | though we ignore it, in case we ever decide to make | |
7101 | use of it in a backward compatible way. */ | |
8424cc97 | 7102 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7103 | } |
26d56a93 | 7104 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7105 | { |
7106 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7107 | ||
7108 | /* Make sure the stub doesn't forget to indicate support | |
7109 | with qSupported. */ | |
7110 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7111 | error (_("Unexpected hwbreak stop reason")); | |
7112 | ||
7113 | /* See above. */ | |
8424cc97 | 7114 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7115 | } |
26d56a93 | 7116 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7117 | { |
1f10ba14 | 7118 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7119 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7120 | } |
26d56a93 | 7121 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7122 | { |
7123 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7124 | /* p1 will indicate "begin" or "end", but it makes | |
7125 | no difference for now, so ignore it. */ | |
8424cc97 | 7126 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7127 | } |
26d56a93 | 7128 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7129 | { |
7130 | ULONGEST c; | |
a744cf53 | 7131 | |
1f10ba14 PA |
7132 | p = unpack_varlen_hex (++p1, &c); |
7133 | event->core = c; | |
cea39f65 | 7134 | } |
26d56a93 | 7135 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7136 | { |
7137 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7138 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7139 | } | |
26d56a93 | 7140 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7141 | { |
7142 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7143 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7144 | } | |
26d56a93 | 7145 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7146 | { |
7147 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7148 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7149 | } |
6ab24463 | 7150 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7151 | { |
7152 | ULONGEST ignored; | |
7153 | char pathname[PATH_MAX]; | |
7154 | int pathlen; | |
7155 | ||
7156 | /* Determine the length of the execd pathname. */ | |
7157 | p = unpack_varlen_hex (++p1, &ignored); | |
7158 | pathlen = (p - p1) / 2; | |
7159 | ||
7160 | /* Save the pathname for event reporting and for | |
7161 | the next run command. */ | |
7162 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
7163 | pathname[pathlen] = '\0'; | |
7164 | ||
7165 | /* This is freed during event handling. */ | |
7166 | event->ws.value.execd_pathname = xstrdup (pathname); | |
7167 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
7168 | ||
7169 | /* Skip the registers included in this packet, since | |
7170 | they may be for an architecture different from the | |
7171 | one used by the original program. */ | |
7172 | skipregs = 1; | |
7173 | } | |
65706a29 PA |
7174 | else if (strprefix (p, p1, "create")) |
7175 | { | |
7176 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7177 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7178 | } |
cea39f65 MS |
7179 | else |
7180 | { | |
1f10ba14 | 7181 | ULONGEST pnum; |
256642e8 | 7182 | const char *p_temp; |
1f10ba14 | 7183 | |
94585166 DB |
7184 | if (skipregs) |
7185 | { | |
8424cc97 | 7186 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7187 | p++; |
7188 | continue; | |
7189 | } | |
7190 | ||
1f10ba14 PA |
7191 | /* Maybe a real ``P'' register number. */ |
7192 | p_temp = unpack_varlen_hex (p, &pnum); | |
7193 | /* If the first invalid character is the colon, we got a | |
7194 | register number. Otherwise, it's an unknown stop | |
7195 | reason. */ | |
7196 | if (p_temp == p1) | |
7197 | { | |
5cd63fda PA |
7198 | /* If we haven't parsed the event's thread yet, find |
7199 | it now, in order to find the architecture of the | |
7200 | reported expedited registers. */ | |
7201 | if (event->ptid == null_ptid) | |
7202 | { | |
7203 | const char *thr = strstr (p1 + 1, ";thread:"); | |
7204 | if (thr != NULL) | |
7205 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7206 | NULL); | |
7207 | else | |
3cada740 PA |
7208 | { |
7209 | /* Either the current thread hasn't changed, | |
7210 | or the inferior is not multi-threaded. | |
7211 | The event must be for the thread we last | |
7212 | set as (or learned as being) current. */ | |
7213 | event->ptid = event->rs->general_thread; | |
7214 | } | |
5cd63fda PA |
7215 | } |
7216 | ||
7217 | if (rsa == NULL) | |
7218 | { | |
7219 | inferior *inf = (event->ptid == null_ptid | |
7220 | ? NULL | |
7221 | : find_inferior_ptid (event->ptid)); | |
7222 | /* If this is the first time we learn anything | |
7223 | about this process, skip the registers | |
7224 | included in this packet, since we don't yet | |
7225 | know which architecture to use to parse them. | |
7226 | We'll determine the architecture later when | |
7227 | we process the stop reply and retrieve the | |
7228 | target description, via | |
7229 | remote_notice_new_inferior -> | |
7230 | post_create_inferior. */ | |
7231 | if (inf == NULL) | |
7232 | { | |
7233 | p = strchrnul (p1 + 1, ';'); | |
7234 | p++; | |
7235 | continue; | |
7236 | } | |
7237 | ||
7238 | event->arch = inf->gdbarch; | |
7239 | rsa = get_remote_arch_state (event->arch); | |
7240 | } | |
7241 | ||
7242 | packet_reg *reg | |
7243 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7244 | cached_reg_t cached_reg; |
43ff13b4 | 7245 | |
1f10ba14 PA |
7246 | if (reg == NULL) |
7247 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7248 | Packet: '%s'\n"), |
1f10ba14 | 7249 | hex_string (pnum), p, buf); |
c8e38a49 | 7250 | |
1f10ba14 | 7251 | cached_reg.num = reg->regnum; |
d1dff226 | 7252 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7253 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7254 | |
1f10ba14 PA |
7255 | p = p1 + 1; |
7256 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7257 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7258 | p += 2 * fieldsize; |
5cd63fda | 7259 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7260 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7261 | |
1f10ba14 PA |
7262 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
7263 | } | |
7264 | else | |
7265 | { | |
7266 | /* Not a number. Silently skip unknown optional | |
7267 | info. */ | |
8424cc97 | 7268 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7269 | } |
cea39f65 | 7270 | } |
c8e38a49 | 7271 | |
cea39f65 MS |
7272 | if (*p != ';') |
7273 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7274 | buf, p); | |
7275 | ++p; | |
7276 | } | |
5b5596ff PA |
7277 | |
7278 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7279 | break; | |
7280 | ||
c8e38a49 PA |
7281 | /* fall through */ |
7282 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7283 | { |
7284 | int sig; | |
7285 | ||
7286 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7287 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7288 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7289 | event->ws.value.sig = (enum gdb_signal) sig; | |
7290 | else | |
7291 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7292 | } | |
c8e38a49 | 7293 | break; |
65706a29 PA |
7294 | case 'w': /* Thread exited. */ |
7295 | { | |
256642e8 | 7296 | const char *p; |
65706a29 PA |
7297 | ULONGEST value; |
7298 | ||
7299 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7300 | p = unpack_varlen_hex (&buf[1], &value); | |
7301 | event->ws.value.integer = value; | |
7302 | if (*p != ';') | |
7303 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7304 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7305 | break; |
7306 | } | |
c8e38a49 PA |
7307 | case 'W': /* Target exited. */ |
7308 | case 'X': | |
7309 | { | |
256642e8 | 7310 | const char *p; |
c8e38a49 PA |
7311 | int pid; |
7312 | ULONGEST value; | |
82f73884 | 7313 | |
c8e38a49 PA |
7314 | /* GDB used to accept only 2 hex chars here. Stubs should |
7315 | only send more if they detect GDB supports multi-process | |
7316 | support. */ | |
7317 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7318 | |
c8e38a49 PA |
7319 | if (buf[0] == 'W') |
7320 | { | |
7321 | /* The remote process exited. */ | |
74531fed PA |
7322 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7323 | event->ws.value.integer = value; | |
c8e38a49 PA |
7324 | } |
7325 | else | |
7326 | { | |
7327 | /* The remote process exited with a signal. */ | |
74531fed | 7328 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7329 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7330 | event->ws.value.sig = (enum gdb_signal) value; | |
7331 | else | |
7332 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7333 | } |
82f73884 | 7334 | |
c8e38a49 PA |
7335 | /* If no process is specified, assume inferior_ptid. */ |
7336 | pid = ptid_get_pid (inferior_ptid); | |
7337 | if (*p == '\0') | |
7338 | ; | |
7339 | else if (*p == ';') | |
7340 | { | |
7341 | p++; | |
7342 | ||
0b24eb2d | 7343 | if (*p == '\0') |
82f73884 | 7344 | ; |
61012eef | 7345 | else if (startswith (p, "process:")) |
82f73884 | 7346 | { |
c8e38a49 | 7347 | ULONGEST upid; |
a744cf53 | 7348 | |
c8e38a49 PA |
7349 | p += sizeof ("process:") - 1; |
7350 | unpack_varlen_hex (p, &upid); | |
7351 | pid = upid; | |
82f73884 PA |
7352 | } |
7353 | else | |
7354 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7355 | } |
c8e38a49 PA |
7356 | else |
7357 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7358 | event->ptid = pid_to_ptid (pid); |
7359 | } | |
7360 | break; | |
f2faf941 PA |
7361 | case 'N': |
7362 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7363 | event->ptid = minus_one_ptid; | |
7364 | break; | |
74531fed PA |
7365 | } |
7366 | ||
6efcd9a8 | 7367 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7368 | error (_("No process or thread specified in stop reply: %s"), buf); |
7369 | } | |
7370 | ||
722247f1 YQ |
7371 | /* When the stub wants to tell GDB about a new notification reply, it |
7372 | sends a notification (%Stop, for example). Those can come it at | |
7373 | any time, hence, we have to make sure that any pending | |
7374 | putpkt/getpkt sequence we're making is finished, before querying | |
7375 | the stub for more events with the corresponding ack command | |
7376 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7377 | immediately upon receiving the notification, something like this | |
7378 | could happen: | |
74531fed PA |
7379 | |
7380 | 1.1) --> Hg 1 | |
7381 | 1.2) <-- OK | |
7382 | 1.3) --> g | |
7383 | 1.4) <-- %Stop | |
7384 | 1.5) --> vStopped | |
7385 | 1.6) <-- (registers reply to step #1.3) | |
7386 | ||
7387 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7388 | query. | |
7389 | ||
796cb314 | 7390 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7391 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7392 | doing whatever we were doing: | |
7393 | ||
7394 | 2.1) --> Hg 1 | |
7395 | 2.2) <-- OK | |
7396 | 2.3) --> g | |
7397 | 2.4) <-- %Stop | |
7398 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7399 | 2.5) <-- (registers reply to step #2.3) | |
7400 | ||
7401 | Eventualy after step #2.5, we return to the event loop, which | |
7402 | notices there's an event on the | |
7403 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7404 | associated callback --- the function below. At this point, we're | |
7405 | always safe to start a vStopped sequence. : | |
7406 | ||
7407 | 2.6) --> vStopped | |
7408 | 2.7) <-- T05 thread:2 | |
7409 | 2.8) --> vStopped | |
7410 | 2.9) --> OK | |
7411 | */ | |
7412 | ||
722247f1 YQ |
7413 | void |
7414 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7415 | { |
7416 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7417 | |
f48ff2a7 | 7418 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7419 | { |
722247f1 YQ |
7420 | if (notif_debug) |
7421 | fprintf_unfiltered (gdb_stdlog, | |
7422 | "notif: process: '%s' ack pending event\n", | |
7423 | nc->name); | |
74531fed | 7424 | |
722247f1 | 7425 | /* acknowledge */ |
f48ff2a7 YQ |
7426 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7427 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7428 | |
7429 | while (1) | |
7430 | { | |
7431 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7432 | if (strcmp (rs->buf, "OK") == 0) | |
7433 | break; | |
7434 | else | |
722247f1 | 7435 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7436 | } |
7437 | } | |
722247f1 YQ |
7438 | else |
7439 | { | |
7440 | if (notif_debug) | |
7441 | fprintf_unfiltered (gdb_stdlog, | |
7442 | "notif: process: '%s' no pending reply\n", | |
7443 | nc->name); | |
7444 | } | |
74531fed PA |
7445 | } |
7446 | ||
74531fed PA |
7447 | /* Called when it is decided that STOP_REPLY holds the info of the |
7448 | event that is to be returned to the core. This function always | |
7449 | destroys STOP_REPLY. */ | |
7450 | ||
7451 | static ptid_t | |
7452 | process_stop_reply (struct stop_reply *stop_reply, | |
7453 | struct target_waitstatus *status) | |
7454 | { | |
7455 | ptid_t ptid; | |
7456 | ||
7457 | *status = stop_reply->ws; | |
7458 | ptid = stop_reply->ptid; | |
7459 | ||
7460 | /* If no thread/process was reported by the stub, assume the current | |
7461 | inferior. */ | |
7462 | if (ptid_equal (ptid, null_ptid)) | |
7463 | ptid = inferior_ptid; | |
7464 | ||
5f3563ea | 7465 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7466 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7467 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7468 | { |
5f3563ea PA |
7469 | /* Expedited registers. */ |
7470 | if (stop_reply->regcache) | |
7471 | { | |
217f1f79 | 7472 | struct regcache *regcache |
5cd63fda | 7473 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea PA |
7474 | cached_reg_t *reg; |
7475 | int ix; | |
7476 | ||
7477 | for (ix = 0; | |
d1dff226 | 7478 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7479 | ix++) |
d1dff226 | 7480 | { |
217f1f79 | 7481 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7482 | xfree (reg->data); |
7483 | } | |
7484 | ||
5f3563ea PA |
7485 | VEC_free (cached_reg_t, stop_reply->regcache); |
7486 | } | |
74531fed | 7487 | |
1941c569 | 7488 | remote_notice_new_inferior (ptid, 0); |
7aabaf9d | 7489 | remote_thread_info *remote_thr = get_remote_thread_info (ptid); |
799a2abe PA |
7490 | remote_thr->core = stop_reply->core; |
7491 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7492 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7493 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7494 | } |
7495 | ||
74531fed PA |
7496 | stop_reply_xfree (stop_reply); |
7497 | return ptid; | |
7498 | } | |
7499 | ||
7500 | /* The non-stop mode version of target_wait. */ | |
7501 | ||
7502 | static ptid_t | |
47608cb1 | 7503 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7504 | { |
7505 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7506 | struct stop_reply *stop_reply; |
7507 | int ret; | |
fee9eda9 | 7508 | int is_notif = 0; |
74531fed PA |
7509 | |
7510 | /* If in non-stop mode, get out of getpkt even if a | |
7511 | notification is received. */ | |
7512 | ||
7513 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7514 | 0 /* forever */, &is_notif); |
74531fed PA |
7515 | while (1) |
7516 | { | |
fee9eda9 | 7517 | if (ret != -1 && !is_notif) |
74531fed PA |
7518 | switch (rs->buf[0]) |
7519 | { | |
7520 | case 'E': /* Error of some sort. */ | |
7521 | /* We're out of sync with the target now. Did it continue | |
7522 | or not? We can't tell which thread it was in non-stop, | |
7523 | so just ignore this. */ | |
7524 | warning (_("Remote failure reply: %s"), rs->buf); | |
7525 | break; | |
7526 | case 'O': /* Console output. */ | |
7527 | remote_console_output (rs->buf + 1); | |
7528 | break; | |
7529 | default: | |
7530 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7531 | break; | |
7532 | } | |
7533 | ||
7534 | /* Acknowledge a pending stop reply that may have arrived in the | |
7535 | mean time. */ | |
f48ff2a7 | 7536 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7537 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7538 | |
7539 | /* If indeed we noticed a stop reply, we're done. */ | |
7540 | stop_reply = queued_stop_reply (ptid); | |
7541 | if (stop_reply != NULL) | |
7542 | return process_stop_reply (stop_reply, status); | |
7543 | ||
47608cb1 | 7544 | /* Still no event. If we're just polling for an event, then |
74531fed | 7545 | return to the event loop. */ |
47608cb1 | 7546 | if (options & TARGET_WNOHANG) |
74531fed PA |
7547 | { |
7548 | status->kind = TARGET_WAITKIND_IGNORE; | |
7549 | return minus_one_ptid; | |
7550 | } | |
7551 | ||
47608cb1 | 7552 | /* Otherwise do a blocking wait. */ |
74531fed | 7553 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7554 | 1 /* forever */, &is_notif); |
74531fed PA |
7555 | } |
7556 | } | |
7557 | ||
7558 | /* Wait until the remote machine stops, then return, storing status in | |
7559 | STATUS just as `wait' would. */ | |
7560 | ||
7561 | static ptid_t | |
47608cb1 | 7562 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7563 | { |
7564 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7565 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7566 | char *buf; |
74531fed PA |
7567 | struct stop_reply *stop_reply; |
7568 | ||
47608cb1 PA |
7569 | again: |
7570 | ||
74531fed PA |
7571 | status->kind = TARGET_WAITKIND_IGNORE; |
7572 | status->value.integer = 0; | |
7573 | ||
7574 | stop_reply = queued_stop_reply (ptid); | |
7575 | if (stop_reply != NULL) | |
7576 | return process_stop_reply (stop_reply, status); | |
7577 | ||
7578 | if (rs->cached_wait_status) | |
7579 | /* Use the cached wait status, but only once. */ | |
7580 | rs->cached_wait_status = 0; | |
7581 | else | |
7582 | { | |
7583 | int ret; | |
722247f1 | 7584 | int is_notif; |
567420d1 PA |
7585 | int forever = ((options & TARGET_WNOHANG) == 0 |
7586 | && wait_forever_enabled_p); | |
7587 | ||
7588 | if (!rs->waiting_for_stop_reply) | |
7589 | { | |
7590 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7591 | return minus_one_ptid; | |
7592 | } | |
74531fed | 7593 | |
74531fed PA |
7594 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7595 | _never_ wait for ever -> test on target_is_async_p(). | |
7596 | However, before we do that we need to ensure that the caller | |
7597 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7598 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7599 | forever, &is_notif); |
722247f1 YQ |
7600 | |
7601 | /* GDB gets a notification. Return to core as this event is | |
7602 | not interesting. */ | |
7603 | if (ret != -1 && is_notif) | |
7604 | return minus_one_ptid; | |
567420d1 PA |
7605 | |
7606 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7607 | return minus_one_ptid; | |
74531fed PA |
7608 | } |
7609 | ||
7610 | buf = rs->buf; | |
7611 | ||
3a29589a DJ |
7612 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7613 | an 'F' or 'O' packet. */ | |
7614 | if (buf[0] != 'F' && buf[0] != 'O') | |
7615 | rs->ctrlc_pending_p = 0; | |
7616 | ||
74531fed PA |
7617 | switch (buf[0]) |
7618 | { | |
7619 | case 'E': /* Error of some sort. */ | |
7620 | /* We're out of sync with the target now. Did it continue or | |
7621 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7622 | rs->waiting_for_stop_reply = 0; |
7623 | ||
74531fed PA |
7624 | warning (_("Remote failure reply: %s"), buf); |
7625 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7626 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7627 | break; |
7628 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7629 | /* GDB may access the inferior memory while handling the File-I/O |
7630 | request, but we don't want GDB accessing memory while waiting | |
7631 | for a stop reply. See the comments in putpkt_binary. Set | |
7632 | waiting_for_stop_reply to 0 temporarily. */ | |
7633 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7634 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7635 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7636 | /* GDB handled the File-I/O request, and the target is running |
7637 | again. Keep waiting for events. */ | |
7638 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7639 | break; |
f2faf941 | 7640 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7641 | { |
29090fb6 LM |
7642 | struct stop_reply *stop_reply; |
7643 | ||
7644 | /* There is a stop reply to handle. */ | |
7645 | rs->waiting_for_stop_reply = 0; | |
7646 | ||
7647 | stop_reply | |
722247f1 YQ |
7648 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7649 | rs->buf); | |
74531fed | 7650 | |
74531fed | 7651 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7652 | break; |
7653 | } | |
7654 | case 'O': /* Console output. */ | |
7655 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7656 | break; |
7657 | case '\0': | |
b73be471 | 7658 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7659 | { |
7660 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7661 | remote system doesn't support it. */ | |
223ffa71 | 7662 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7663 | printf_filtered |
7664 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7665 | gdb_signal_to_name (rs->last_sent_signal)); |
7666 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7667 | target_terminal::inferior (); |
c8e38a49 | 7668 | |
f5c4fcd9 TT |
7669 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7670 | putpkt (buf); | |
c8e38a49 | 7671 | break; |
43ff13b4 | 7672 | } |
c8e38a49 PA |
7673 | /* else fallthrough */ |
7674 | default: | |
7675 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7676 | break; |
43ff13b4 | 7677 | } |
c8e38a49 | 7678 | |
f2faf941 PA |
7679 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7680 | return minus_one_ptid; | |
7681 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7682 | { |
7683 | /* Nothing interesting happened. If we're doing a non-blocking | |
7684 | poll, we're done. Otherwise, go back to waiting. */ | |
7685 | if (options & TARGET_WNOHANG) | |
7686 | return minus_one_ptid; | |
7687 | else | |
7688 | goto again; | |
7689 | } | |
74531fed PA |
7690 | else if (status->kind != TARGET_WAITKIND_EXITED |
7691 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7692 | { |
7693 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7694 | record_currthread (rs, event_ptid); |
82f73884 PA |
7695 | else |
7696 | event_ptid = inferior_ptid; | |
43ff13b4 | 7697 | } |
74531fed PA |
7698 | else |
7699 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7700 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7701 | |
82f73884 | 7702 | return event_ptid; |
43ff13b4 JM |
7703 | } |
7704 | ||
74531fed PA |
7705 | /* Wait until the remote machine stops, then return, storing status in |
7706 | STATUS just as `wait' would. */ | |
7707 | ||
f6ac5f3d PA |
7708 | ptid_t |
7709 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, int options) | |
c8e38a49 PA |
7710 | { |
7711 | ptid_t event_ptid; | |
7712 | ||
6efcd9a8 | 7713 | if (target_is_non_stop_p ()) |
47608cb1 | 7714 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7715 | else |
47608cb1 | 7716 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7717 | |
d9d41e78 | 7718 | if (target_is_async_p ()) |
c8e38a49 | 7719 | { |
74531fed PA |
7720 | /* If there are are events left in the queue tell the event loop |
7721 | to return here. */ | |
722247f1 | 7722 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7723 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7724 | } |
c8e38a49 PA |
7725 | |
7726 | return event_ptid; | |
7727 | } | |
7728 | ||
74ca34ce | 7729 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7730 | |
b96ec7ac | 7731 | static int |
56be3814 | 7732 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7733 | { |
ac7936df | 7734 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7735 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7736 | char *buf, *p; |
9890e433 | 7737 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7738 | int i; |
7739 | ||
4082afcc | 7740 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7741 | return 0; |
7742 | ||
7743 | if (reg->pnum == -1) | |
7744 | return 0; | |
7745 | ||
2e9f7625 | 7746 | p = rs->buf; |
fcad0fa4 | 7747 | *p++ = 'p'; |
74ca34ce | 7748 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7749 | *p++ = '\0'; |
1f4437a4 MS |
7750 | putpkt (rs->buf); |
7751 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7752 | |
2e9f7625 DJ |
7753 | buf = rs->buf; |
7754 | ||
74ca34ce DJ |
7755 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7756 | { | |
7757 | case PACKET_OK: | |
7758 | break; | |
7759 | case PACKET_UNKNOWN: | |
7760 | return 0; | |
7761 | case PACKET_ERROR: | |
27a9c0bf | 7762 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7763 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7764 | reg->regnum), |
7765 | buf); | |
74ca34ce | 7766 | } |
3f9a994c JB |
7767 | |
7768 | /* If this register is unfetchable, tell the regcache. */ | |
7769 | if (buf[0] == 'x') | |
8480adf2 | 7770 | { |
56be3814 | 7771 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7772 | return 1; |
b96ec7ac | 7773 | } |
b96ec7ac | 7774 | |
3f9a994c JB |
7775 | /* Otherwise, parse and supply the value. */ |
7776 | p = buf; | |
7777 | i = 0; | |
7778 | while (p[0] != 0) | |
7779 | { | |
7780 | if (p[1] == 0) | |
74ca34ce | 7781 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7782 | |
7783 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7784 | p += 2; | |
7785 | } | |
56be3814 | 7786 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7787 | return 1; |
b96ec7ac AC |
7788 | } |
7789 | ||
74ca34ce DJ |
7790 | /* Fetch the registers included in the target's 'g' packet. */ |
7791 | ||
29709017 DJ |
7792 | static int |
7793 | send_g_packet (void) | |
c906108c | 7794 | { |
d01949b6 | 7795 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7796 | int buf_len; |
c906108c | 7797 | |
bba74b36 | 7798 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
b75abf5b AK |
7799 | putpkt (rs->buf); |
7800 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7801 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
7802 | error (_("Could not read registers; remote failure reply '%s'"), | |
7803 | rs->buf); | |
c906108c | 7804 | |
29709017 DJ |
7805 | /* We can get out of synch in various cases. If the first character |
7806 | in the buffer is not a hex character, assume that has happened | |
7807 | and try to fetch another packet to read. */ | |
7808 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7809 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7810 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7811 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7812 | { | |
7813 | if (remote_debug) | |
7814 | fprintf_unfiltered (gdb_stdlog, | |
7815 | "Bad register packet; fetching a new packet\n"); | |
7816 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7817 | } | |
7818 | ||
74ca34ce DJ |
7819 | buf_len = strlen (rs->buf); |
7820 | ||
7821 | /* Sanity check the received packet. */ | |
7822 | if (buf_len % 2 != 0) | |
7823 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7824 | |
7825 | return buf_len / 2; | |
7826 | } | |
7827 | ||
7828 | static void | |
56be3814 | 7829 | process_g_packet (struct regcache *regcache) |
29709017 | 7830 | { |
ac7936df | 7831 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 7832 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 7833 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); |
29709017 DJ |
7834 | int i, buf_len; |
7835 | char *p; | |
7836 | char *regs; | |
7837 | ||
7838 | buf_len = strlen (rs->buf); | |
7839 | ||
7840 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 7841 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 SM |
7842 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
7843 | "bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf); | |
74ca34ce DJ |
7844 | |
7845 | /* Save the size of the packet sent to us by the target. It is used | |
7846 | as a heuristic when determining the max size of packets that the | |
7847 | target can safely receive. */ | |
7848 | if (rsa->actual_register_packet_size == 0) | |
7849 | rsa->actual_register_packet_size = buf_len; | |
7850 | ||
7851 | /* If this is smaller than we guessed the 'g' packet would be, | |
7852 | update our records. A 'g' reply that doesn't include a register's | |
7853 | value implies either that the register is not available, or that | |
7854 | the 'p' packet must be used. */ | |
7855 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7856 | { |
9dc193c3 | 7857 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7858 | |
4a22f64d | 7859 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7860 | { |
9dc193c3 LF |
7861 | long offset = rsa->regs[i].offset; |
7862 | long reg_size = register_size (gdbarch, i); | |
7863 | ||
74ca34ce DJ |
7864 | if (rsa->regs[i].pnum == -1) |
7865 | continue; | |
7866 | ||
9dc193c3 | 7867 | if (offset >= sizeof_g_packet) |
74ca34ce | 7868 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7869 | else if (offset + reg_size > sizeof_g_packet) |
7870 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7871 | else |
74ca34ce | 7872 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7873 | } |
9dc193c3 LF |
7874 | |
7875 | /* Looks valid enough, we can assume this is the correct length | |
7876 | for a 'g' packet. It's important not to adjust | |
7877 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7878 | this "if" won't be run the next time the method is called | |
7879 | with a packet of the same size and one of the internal errors | |
7880 | below will trigger instead. */ | |
7881 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7882 | } |
b323314b | 7883 | |
224c3ddb | 7884 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7885 | |
7886 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7887 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7888 | |
c906108c SS |
7889 | /* Reply describes registers byte by byte, each byte encoded as two |
7890 | hex characters. Suck them all up, then supply them to the | |
7891 | register cacheing/storage mechanism. */ | |
7892 | ||
74ca34ce | 7893 | p = rs->buf; |
ea9c271d | 7894 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7895 | { |
74ca34ce DJ |
7896 | if (p[0] == 0 || p[1] == 0) |
7897 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7898 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7899 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7900 | |
c906108c | 7901 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7902 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7903 | else |
7904 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7905 | p += 2; | |
7906 | } | |
7907 | ||
a744cf53 MS |
7908 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7909 | { | |
7910 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7911 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7912 | |
7913 | if (r->in_g_packet) | |
7914 | { | |
9dc193c3 | 7915 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7916 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7917 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7918 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7919 | else if (rs->buf[r->offset * 2] == 'x') |
7920 | { | |
7921 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7922 | /* The register isn't available, mark it as such (at | |
7923 | the same time setting the value to zero). */ | |
7924 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7925 | } | |
7926 | else | |
7927 | regcache_raw_supply (regcache, r->regnum, | |
7928 | regs + r->offset); | |
7929 | } | |
7930 | } | |
c906108c SS |
7931 | } |
7932 | ||
29709017 | 7933 | static void |
56be3814 | 7934 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7935 | { |
7936 | send_g_packet (); | |
56be3814 | 7937 | process_g_packet (regcache); |
29709017 DJ |
7938 | } |
7939 | ||
e6e4e701 PA |
7940 | /* Make the remote selected traceframe match GDB's selected |
7941 | traceframe. */ | |
7942 | ||
7943 | static void | |
7944 | set_remote_traceframe (void) | |
7945 | { | |
7946 | int newnum; | |
262e1174 | 7947 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7948 | |
262e1174 | 7949 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7950 | return; |
7951 | ||
7952 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7953 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7954 | |
7955 | newnum = target_trace_find (tfind_number, | |
7956 | get_traceframe_number (), 0, 0, NULL); | |
7957 | ||
7958 | /* Should not happen. If it does, all bets are off. */ | |
7959 | if (newnum != get_traceframe_number ()) | |
7960 | warning (_("could not set remote traceframe")); | |
7961 | } | |
7962 | ||
f6ac5f3d PA |
7963 | void |
7964 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 7965 | { |
ac7936df | 7966 | struct gdbarch *gdbarch = regcache->arch (); |
5cd63fda | 7967 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); |
74ca34ce DJ |
7968 | int i; |
7969 | ||
e6e4e701 | 7970 | set_remote_traceframe (); |
bcc0c096 | 7971 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7972 | |
7973 | if (regnum >= 0) | |
7974 | { | |
5cd63fda | 7975 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 7976 | |
74ca34ce DJ |
7977 | gdb_assert (reg != NULL); |
7978 | ||
7979 | /* If this register might be in the 'g' packet, try that first - | |
7980 | we are likely to read more than one register. If this is the | |
7981 | first 'g' packet, we might be overly optimistic about its | |
7982 | contents, so fall back to 'p'. */ | |
7983 | if (reg->in_g_packet) | |
7984 | { | |
56be3814 | 7985 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7986 | if (reg->in_g_packet) |
7987 | return; | |
7988 | } | |
7989 | ||
56be3814 | 7990 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7991 | return; |
7992 | ||
7993 | /* This register is not available. */ | |
56be3814 | 7994 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7995 | |
7996 | return; | |
7997 | } | |
7998 | ||
56be3814 | 7999 | fetch_registers_using_g (regcache); |
74ca34ce | 8000 | |
5cd63fda | 8001 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8002 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8003 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8004 | { |
8005 | /* This register is not available. */ | |
56be3814 | 8006 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
8007 | } |
8008 | } | |
8009 | ||
c906108c SS |
8010 | /* Prepare to store registers. Since we may send them all (using a |
8011 | 'G' request), we have to read out the ones we don't want to change | |
8012 | first. */ | |
8013 | ||
f6ac5f3d PA |
8014 | void |
8015 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8016 | { |
5cd63fda | 8017 | remote_arch_state *rsa = get_remote_arch_state (regcache->arch ()); |
cf0e1e0d | 8018 | int i; |
cf0e1e0d | 8019 | |
c906108c | 8020 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8021 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8022 | { |
8023 | case PACKET_DISABLE: | |
8024 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8025 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8026 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8027 | if (rsa->regs[i].in_g_packet) |
8e368124 | 8028 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
8029 | break; |
8030 | case PACKET_ENABLE: | |
8031 | break; | |
8032 | } | |
8033 | } | |
8034 | ||
ad10f812 | 8035 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8036 | packet was not recognized. */ |
5a2468f5 JM |
8037 | |
8038 | static int | |
1f4437a4 MS |
8039 | store_register_using_P (const struct regcache *regcache, |
8040 | struct packet_reg *reg) | |
5a2468f5 | 8041 | { |
ac7936df | 8042 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8043 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8044 | /* Try storing a single register. */ |
6d820c5c | 8045 | char *buf = rs->buf; |
9890e433 | 8046 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8047 | char *p; |
5a2468f5 | 8048 | |
4082afcc | 8049 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8050 | return 0; |
8051 | ||
8052 | if (reg->pnum == -1) | |
8053 | return 0; | |
8054 | ||
ea9c271d | 8055 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8056 | p = buf + strlen (buf); |
56be3814 | 8057 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 8058 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
8059 | putpkt (rs->buf); |
8060 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 8061 | |
74ca34ce DJ |
8062 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8063 | { | |
8064 | case PACKET_OK: | |
8065 | return 1; | |
8066 | case PACKET_ERROR: | |
27a9c0bf MS |
8067 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8068 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
8069 | case PACKET_UNKNOWN: |
8070 | return 0; | |
8071 | default: | |
8072 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8073 | } | |
c906108c SS |
8074 | } |
8075 | ||
23860348 MS |
8076 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8077 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
8078 | |
8079 | static void | |
56be3814 | 8080 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 8081 | { |
d01949b6 | 8082 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 8083 | remote_arch_state *rsa = get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8084 | gdb_byte *regs; |
c906108c SS |
8085 | char *p; |
8086 | ||
193cb69f AC |
8087 | /* Extract all the registers in the regcache copying them into a |
8088 | local buffer. */ | |
8089 | { | |
b323314b | 8090 | int i; |
a744cf53 | 8091 | |
224c3ddb | 8092 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8093 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8094 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8095 | { |
ea9c271d | 8096 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8097 | |
b323314b | 8098 | if (r->in_g_packet) |
56be3814 | 8099 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
8100 | } |
8101 | } | |
c906108c SS |
8102 | |
8103 | /* Command describes registers byte by byte, | |
8104 | each byte encoded as two hex characters. */ | |
6d820c5c | 8105 | p = rs->buf; |
193cb69f | 8106 | *p++ = 'G'; |
74ca34ce | 8107 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
8108 | putpkt (rs->buf); |
8109 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8110 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
8111 | error (_("Could not write registers; remote failure reply '%s'"), |
8112 | rs->buf); | |
c906108c | 8113 | } |
74ca34ce DJ |
8114 | |
8115 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8116 | of the register cache buffer. FIXME: ignores errors. */ | |
8117 | ||
f6ac5f3d PA |
8118 | void |
8119 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8120 | { |
5cd63fda PA |
8121 | struct gdbarch *gdbarch = regcache->arch (); |
8122 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8123 | int i; |
8124 | ||
e6e4e701 | 8125 | set_remote_traceframe (); |
bcc0c096 | 8126 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
8127 | |
8128 | if (regnum >= 0) | |
8129 | { | |
5cd63fda | 8130 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8131 | |
74ca34ce DJ |
8132 | gdb_assert (reg != NULL); |
8133 | ||
8134 | /* Always prefer to store registers using the 'P' packet if | |
8135 | possible; we often change only a small number of registers. | |
8136 | Sometimes we change a larger number; we'd need help from a | |
8137 | higher layer to know to use 'G'. */ | |
56be3814 | 8138 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8139 | return; |
8140 | ||
8141 | /* For now, don't complain if we have no way to write the | |
8142 | register. GDB loses track of unavailable registers too | |
8143 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8144 | any way to read the register, either... */ |
74ca34ce DJ |
8145 | if (!reg->in_g_packet) |
8146 | return; | |
8147 | ||
56be3814 | 8148 | store_registers_using_G (regcache); |
74ca34ce DJ |
8149 | return; |
8150 | } | |
8151 | ||
56be3814 | 8152 | store_registers_using_G (regcache); |
74ca34ce | 8153 | |
5cd63fda | 8154 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8155 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8156 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8157 | /* See above for why we do not issue an error here. */ |
8158 | continue; | |
8159 | } | |
c906108c SS |
8160 | \f |
8161 | ||
8162 | /* Return the number of hex digits in num. */ | |
8163 | ||
8164 | static int | |
fba45db2 | 8165 | hexnumlen (ULONGEST num) |
c906108c SS |
8166 | { |
8167 | int i; | |
8168 | ||
8169 | for (i = 0; num != 0; i++) | |
8170 | num >>= 4; | |
8171 | ||
325fac50 | 8172 | return std::max (i, 1); |
c906108c SS |
8173 | } |
8174 | ||
2df3850c | 8175 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8176 | |
8177 | static int | |
fba45db2 | 8178 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8179 | { |
c906108c | 8180 | int len = hexnumlen (num); |
a744cf53 | 8181 | |
2df3850c JM |
8182 | return hexnumnstr (buf, num, len); |
8183 | } | |
8184 | ||
c906108c | 8185 | |
2df3850c | 8186 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8187 | |
2df3850c | 8188 | static int |
fba45db2 | 8189 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8190 | { |
8191 | int i; | |
8192 | ||
8193 | buf[width] = '\0'; | |
8194 | ||
8195 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8196 | { |
c5aa993b | 8197 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8198 | num >>= 4; |
8199 | } | |
8200 | ||
2df3850c | 8201 | return width; |
c906108c SS |
8202 | } |
8203 | ||
23860348 | 8204 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8205 | |
8206 | static CORE_ADDR | |
fba45db2 | 8207 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8208 | { |
883b9c6c | 8209 | unsigned int address_size = remote_address_size; |
a744cf53 | 8210 | |
911c95a5 UW |
8211 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8212 | if (!address_size) | |
f5656ead | 8213 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8214 | |
8215 | if (address_size > 0 | |
8216 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8217 | { |
8218 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8219 | in a ULONGEST variable. */ |
c906108c | 8220 | ULONGEST mask = 1; |
a744cf53 | 8221 | |
911c95a5 | 8222 | mask = (mask << address_size) - 1; |
c906108c SS |
8223 | addr &= mask; |
8224 | } | |
8225 | return addr; | |
8226 | } | |
8227 | ||
8228 | /* Determine whether the remote target supports binary downloading. | |
8229 | This is accomplished by sending a no-op memory write of zero length | |
8230 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8231 | the whole packet, since many stubs strip the eighth bit and |
8232 | subsequently compute a wrong checksum, which causes real havoc with | |
8233 | remote_write_bytes. | |
7a292a7a | 8234 | |
96baa820 | 8235 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8236 | clean. In cases like this, the user should clear "remote |
23860348 | 8237 | X-packet". */ |
96baa820 | 8238 | |
c906108c | 8239 | static void |
fba45db2 | 8240 | check_binary_download (CORE_ADDR addr) |
c906108c | 8241 | { |
d01949b6 | 8242 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8243 | |
4082afcc | 8244 | switch (packet_support (PACKET_X)) |
c906108c | 8245 | { |
96baa820 JM |
8246 | case PACKET_DISABLE: |
8247 | break; | |
8248 | case PACKET_ENABLE: | |
8249 | break; | |
8250 | case PACKET_SUPPORT_UNKNOWN: | |
8251 | { | |
96baa820 | 8252 | char *p; |
802188a7 | 8253 | |
2e9f7625 | 8254 | p = rs->buf; |
96baa820 JM |
8255 | *p++ = 'X'; |
8256 | p += hexnumstr (p, (ULONGEST) addr); | |
8257 | *p++ = ','; | |
8258 | p += hexnumstr (p, (ULONGEST) 0); | |
8259 | *p++ = ':'; | |
8260 | *p = '\0'; | |
802188a7 | 8261 | |
2e9f7625 | 8262 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8263 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8264 | |
2e9f7625 | 8265 | if (rs->buf[0] == '\0') |
96baa820 JM |
8266 | { |
8267 | if (remote_debug) | |
8268 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8269 | "binary downloading NOT " |
8270 | "supported by target\n"); | |
444abaca | 8271 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8272 | } |
8273 | else | |
8274 | { | |
8275 | if (remote_debug) | |
8276 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8277 | "binary downloading supported by target\n"); |
444abaca | 8278 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8279 | } |
8280 | break; | |
8281 | } | |
c906108c SS |
8282 | } |
8283 | } | |
8284 | ||
124e13d9 SM |
8285 | /* Helper function to resize the payload in order to try to get a good |
8286 | alignment. We try to write an amount of data such that the next write will | |
8287 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8288 | ||
8289 | static int | |
8290 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8291 | { | |
8292 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8293 | } | |
8294 | ||
c906108c SS |
8295 | /* Write memory data directly to the remote machine. |
8296 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8297 | HEADER is the starting part of the packet. |
c906108c SS |
8298 | MEMADDR is the address in the remote memory space. |
8299 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8300 | LEN_UNITS is the number of addressable units to write. |
8301 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8302 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8303 | should send data as binary ('X'), or hex-encoded ('M'). | |
8304 | ||
8305 | The function creates packet of the form | |
8306 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8307 | ||
124e13d9 | 8308 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8309 | |
8310 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8311 | are omitted. | |
8312 | ||
9b409511 | 8313 | Return the transferred status, error or OK (an |
124e13d9 SM |
8314 | 'enum target_xfer_status' value). Save the number of addressable units |
8315 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8316 | ||
8317 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8318 | exchange between gdb and the stub could look like (?? in place of the | |
8319 | checksum): | |
8320 | ||
8321 | -> $m1000,4#?? | |
8322 | <- aaaabbbbccccdddd | |
8323 | ||
8324 | -> $M1000,3:eeeeffffeeee#?? | |
8325 | <- OK | |
8326 | ||
8327 | -> $m1000,4#?? | |
8328 | <- eeeeffffeeeedddd */ | |
c906108c | 8329 | |
9b409511 | 8330 | static enum target_xfer_status |
a76d924d | 8331 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8332 | const gdb_byte *myaddr, ULONGEST len_units, |
8333 | int unit_size, ULONGEST *xfered_len_units, | |
8334 | char packet_format, int use_length) | |
c906108c | 8335 | { |
6d820c5c | 8336 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8337 | char *p; |
a76d924d DJ |
8338 | char *plen = NULL; |
8339 | int plenlen = 0; | |
124e13d9 SM |
8340 | int todo_units; |
8341 | int units_written; | |
8342 | int payload_capacity_bytes; | |
8343 | int payload_length_bytes; | |
a76d924d DJ |
8344 | |
8345 | if (packet_format != 'X' && packet_format != 'M') | |
8346 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8347 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8348 | |
124e13d9 | 8349 | if (len_units == 0) |
9b409511 | 8350 | return TARGET_XFER_EOF; |
b2182ed2 | 8351 | |
124e13d9 | 8352 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8353 | |
6d820c5c DJ |
8354 | /* The packet buffer will be large enough for the payload; |
8355 | get_memory_packet_size ensures this. */ | |
a76d924d | 8356 | rs->buf[0] = '\0'; |
c906108c | 8357 | |
a257b5bb | 8358 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8359 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8360 | ||
124e13d9 | 8361 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8362 | if (!use_length) |
0df8b418 | 8363 | /* The comma won't be used. */ |
124e13d9 SM |
8364 | payload_capacity_bytes += 1; |
8365 | payload_capacity_bytes -= strlen (header); | |
8366 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8367 | |
a76d924d | 8368 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8369 | |
a76d924d DJ |
8370 | strcat (rs->buf, header); |
8371 | p = rs->buf + strlen (header); | |
8372 | ||
8373 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8374 | if (packet_format == 'X') | |
c906108c | 8375 | { |
23860348 | 8376 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8377 | todo_units = std::min (len_units, |
8378 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8379 | if (use_length) |
124e13d9 | 8380 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8381 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8382 | } |
8383 | else | |
8384 | { | |
124e13d9 | 8385 | /* Number of bytes that will fit. */ |
325fac50 PA |
8386 | todo_units |
8387 | = std::min (len_units, | |
8388 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8389 | if (use_length) |
124e13d9 | 8390 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8391 | todo_units = std::min (todo_units, |
8392 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8393 | } |
a76d924d | 8394 | |
124e13d9 | 8395 | if (todo_units <= 0) |
3de11b2e | 8396 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8397 | _("minimum packet size too small to write data")); |
802188a7 | 8398 | |
6765f3e5 DJ |
8399 | /* If we already need another packet, then try to align the end |
8400 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8401 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8402 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8403 | |
a257b5bb | 8404 | /* Append "<memaddr>". */ |
917317f4 JM |
8405 | memaddr = remote_address_masked (memaddr); |
8406 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8407 | |
a76d924d DJ |
8408 | if (use_length) |
8409 | { | |
8410 | /* Append ",". */ | |
8411 | *p++ = ','; | |
802188a7 | 8412 | |
124e13d9 SM |
8413 | /* Append the length and retain its location and size. It may need to be |
8414 | adjusted once the packet body has been created. */ | |
a76d924d | 8415 | plen = p; |
124e13d9 | 8416 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8417 | p += plenlen; |
8418 | } | |
a257b5bb AC |
8419 | |
8420 | /* Append ":". */ | |
917317f4 JM |
8421 | *p++ = ':'; |
8422 | *p = '\0'; | |
802188a7 | 8423 | |
a257b5bb | 8424 | /* Append the packet body. */ |
a76d924d | 8425 | if (packet_format == 'X') |
917317f4 | 8426 | { |
917317f4 JM |
8427 | /* Binary mode. Send target system values byte by byte, in |
8428 | increasing byte addresses. Only escape certain critical | |
8429 | characters. */ | |
124e13d9 SM |
8430 | payload_length_bytes = |
8431 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8432 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8433 | |
124e13d9 | 8434 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8435 | a second try to keep the end of the packet aligned. Don't do |
8436 | this if the packet is tiny. */ | |
124e13d9 | 8437 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8438 | { |
124e13d9 SM |
8439 | int new_todo_units; |
8440 | ||
8441 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8442 | ||
8443 | if (new_todo_units != units_written) | |
8444 | payload_length_bytes = | |
8445 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8446 | (gdb_byte *) p, &units_written, | |
8447 | payload_capacity_bytes); | |
6765f3e5 DJ |
8448 | } |
8449 | ||
124e13d9 SM |
8450 | p += payload_length_bytes; |
8451 | if (use_length && units_written < todo_units) | |
c906108c | 8452 | { |
802188a7 | 8453 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8454 | and we have actually sent fewer units than planned. |
917317f4 JM |
8455 | Fix-up the length field of the packet. Use the same |
8456 | number of characters as before. */ | |
124e13d9 SM |
8457 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8458 | plenlen); | |
917317f4 | 8459 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8460 | } |
a76d924d DJ |
8461 | } |
8462 | else | |
8463 | { | |
917317f4 JM |
8464 | /* Normal mode: Send target system values byte by byte, in |
8465 | increasing byte addresses. Each byte is encoded as a two hex | |
8466 | value. */ | |
124e13d9 SM |
8467 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8468 | units_written = todo_units; | |
c906108c | 8469 | } |
802188a7 | 8470 | |
2e9f7625 | 8471 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8472 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8473 | |
2e9f7625 | 8474 | if (rs->buf[0] == 'E') |
00d84524 | 8475 | return TARGET_XFER_E_IO; |
802188a7 | 8476 | |
124e13d9 SM |
8477 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8478 | send fewer units than we'd planned. */ | |
8479 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8480 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8481 | } |
8482 | ||
a76d924d DJ |
8483 | /* Write memory data directly to the remote machine. |
8484 | This does not inform the data cache; the data cache uses this. | |
8485 | MEMADDR is the address in the remote memory space. | |
8486 | MYADDR is the address of the buffer in our space. | |
8487 | LEN is the number of bytes. | |
8488 | ||
9b409511 YQ |
8489 | Return the transferred status, error or OK (an |
8490 | 'enum target_xfer_status' value). Save the number of bytes | |
8491 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8492 | |
9b409511 YQ |
8493 | static enum target_xfer_status |
8494 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8495 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8496 | { |
a121b7c1 | 8497 | const char *packet_format = NULL; |
a76d924d DJ |
8498 | |
8499 | /* Check whether the target supports binary download. */ | |
8500 | check_binary_download (memaddr); | |
8501 | ||
4082afcc | 8502 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8503 | { |
8504 | case PACKET_ENABLE: | |
8505 | packet_format = "X"; | |
8506 | break; | |
8507 | case PACKET_DISABLE: | |
8508 | packet_format = "M"; | |
8509 | break; | |
8510 | case PACKET_SUPPORT_UNKNOWN: | |
8511 | internal_error (__FILE__, __LINE__, | |
8512 | _("remote_write_bytes: bad internal state")); | |
8513 | default: | |
8514 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8515 | } | |
8516 | ||
8517 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8518 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8519 | packet_format[0], 1); |
a76d924d DJ |
8520 | } |
8521 | ||
9217e74e YQ |
8522 | /* Read memory data directly from the remote machine. |
8523 | This does not use the data cache; the data cache uses this. | |
8524 | MEMADDR is the address in the remote memory space. | |
8525 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8526 | LEN_UNITS is the number of addressable memory units to read.. |
8527 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8528 | |
8529 | Return the transferred status, error or OK (an | |
8530 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8531 | transferred in *XFERED_LEN_UNITS. |
8532 | ||
8533 | See the comment of remote_write_bytes_aux for an example of | |
8534 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8535 | |
8536 | static enum target_xfer_status | |
124e13d9 SM |
8537 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8538 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8539 | { |
8540 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8541 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8542 | char *p; |
124e13d9 SM |
8543 | int todo_units; |
8544 | int decoded_bytes; | |
9217e74e | 8545 | |
124e13d9 | 8546 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8547 | /* The packet buffer will be large enough for the payload; |
8548 | get_memory_packet_size ensures this. */ | |
8549 | ||
124e13d9 | 8550 | /* Number of units that will fit. */ |
325fac50 PA |
8551 | todo_units = std::min (len_units, |
8552 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8553 | |
8554 | /* Construct "m"<memaddr>","<len>". */ | |
8555 | memaddr = remote_address_masked (memaddr); | |
8556 | p = rs->buf; | |
8557 | *p++ = 'm'; | |
8558 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8559 | *p++ = ','; | |
124e13d9 | 8560 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8561 | *p = '\0'; |
8562 | putpkt (rs->buf); | |
8563 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8564 | if (rs->buf[0] == 'E' | |
8565 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8566 | && rs->buf[3] == '\0') | |
8567 | return TARGET_XFER_E_IO; | |
8568 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8569 | characters. */ | |
8570 | p = rs->buf; | |
124e13d9 | 8571 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8572 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8573 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8574 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8575 | } |
8576 | ||
b55fbac4 YQ |
8577 | /* Using the set of read-only target sections of remote, read live |
8578 | read-only memory. | |
8acf9577 YQ |
8579 | |
8580 | For interface/parameters/return description see target.h, | |
8581 | to_xfer_partial. */ | |
8582 | ||
8583 | static enum target_xfer_status | |
b55fbac4 YQ |
8584 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8585 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8586 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8587 | { |
8588 | struct target_section *secp; | |
8589 | struct target_section_table *table; | |
8590 | ||
8591 | secp = target_section_by_addr (ops, memaddr); | |
8592 | if (secp != NULL | |
8593 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8594 | secp->the_bfd_section) | |
8595 | & SEC_READONLY)) | |
8596 | { | |
8597 | struct target_section *p; | |
8598 | ULONGEST memend = memaddr + len; | |
8599 | ||
8600 | table = target_get_section_table (ops); | |
8601 | ||
8602 | for (p = table->sections; p < table->sections_end; p++) | |
8603 | { | |
8604 | if (memaddr >= p->addr) | |
8605 | { | |
8606 | if (memend <= p->endaddr) | |
8607 | { | |
8608 | /* Entire transfer is within this section. */ | |
124e13d9 | 8609 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8610 | xfered_len); |
8acf9577 YQ |
8611 | } |
8612 | else if (memaddr >= p->endaddr) | |
8613 | { | |
8614 | /* This section ends before the transfer starts. */ | |
8615 | continue; | |
8616 | } | |
8617 | else | |
8618 | { | |
8619 | /* This section overlaps the transfer. Just do half. */ | |
8620 | len = p->endaddr - memaddr; | |
124e13d9 | 8621 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8622 | xfered_len); |
8acf9577 YQ |
8623 | } |
8624 | } | |
8625 | } | |
8626 | } | |
8627 | ||
8628 | return TARGET_XFER_EOF; | |
8629 | } | |
8630 | ||
9217e74e YQ |
8631 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8632 | first if the requested memory is unavailable in traceframe. | |
8633 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8634 | |
9b409511 | 8635 | static enum target_xfer_status |
8acf9577 | 8636 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8637 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8638 | ULONGEST *xfered_len) | |
c906108c | 8639 | { |
6b6aa828 | 8640 | if (len == 0) |
96c4f946 | 8641 | return TARGET_XFER_EOF; |
b2182ed2 | 8642 | |
8acf9577 YQ |
8643 | if (get_traceframe_number () != -1) |
8644 | { | |
a79b1bc6 | 8645 | std::vector<mem_range> available; |
8acf9577 YQ |
8646 | |
8647 | /* If we fail to get the set of available memory, then the | |
8648 | target does not support querying traceframe info, and so we | |
8649 | attempt reading from the traceframe anyway (assuming the | |
8650 | target implements the old QTro packet then). */ | |
8651 | if (traceframe_available_memory (&available, memaddr, len)) | |
8652 | { | |
a79b1bc6 | 8653 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8654 | { |
8655 | enum target_xfer_status res; | |
8656 | ||
8657 | /* Don't read into the traceframe's available | |
8658 | memory. */ | |
a79b1bc6 | 8659 | if (!available.empty ()) |
8acf9577 YQ |
8660 | { |
8661 | LONGEST oldlen = len; | |
8662 | ||
a79b1bc6 | 8663 | len = available[0].start - memaddr; |
8acf9577 YQ |
8664 | gdb_assert (len <= oldlen); |
8665 | } | |
8666 | ||
8acf9577 | 8667 | /* This goes through the topmost target again. */ |
b55fbac4 | 8668 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8669 | len, unit_size, xfered_len); |
8acf9577 YQ |
8670 | if (res == TARGET_XFER_OK) |
8671 | return TARGET_XFER_OK; | |
8672 | else | |
8673 | { | |
8674 | /* No use trying further, we know some memory starting | |
8675 | at MEMADDR isn't available. */ | |
8676 | *xfered_len = len; | |
92ffd475 PC |
8677 | return (*xfered_len != 0) ? |
8678 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8679 | } |
8680 | } | |
8681 | ||
8682 | /* Don't try to read more than how much is available, in | |
8683 | case the target implements the deprecated QTro packet to | |
8684 | cater for older GDBs (the target's knowledge of read-only | |
8685 | sections may be outdated by now). */ | |
a79b1bc6 | 8686 | len = available[0].length; |
8acf9577 YQ |
8687 | } |
8688 | } | |
8689 | ||
124e13d9 | 8690 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8691 | } |
74531fed | 8692 | |
c906108c | 8693 | \f |
c906108c | 8694 | |
a76d924d DJ |
8695 | /* Sends a packet with content determined by the printf format string |
8696 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8697 | whether the packet was a success, a failure, or unknown. */ | |
8698 | ||
77b64a49 PA |
8699 | static enum packet_result remote_send_printf (const char *format, ...) |
8700 | ATTRIBUTE_PRINTF (1, 2); | |
8701 | ||
2c0b251b | 8702 | static enum packet_result |
a76d924d DJ |
8703 | remote_send_printf (const char *format, ...) |
8704 | { | |
8705 | struct remote_state *rs = get_remote_state (); | |
8706 | int max_size = get_remote_packet_size (); | |
a76d924d | 8707 | va_list ap; |
a744cf53 | 8708 | |
a76d924d DJ |
8709 | va_start (ap, format); |
8710 | ||
8711 | rs->buf[0] = '\0'; | |
8712 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8713 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8714 | |
8715 | if (putpkt (rs->buf) < 0) | |
8716 | error (_("Communication problem with target.")); | |
8717 | ||
8718 | rs->buf[0] = '\0'; | |
8719 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8720 | ||
8721 | return packet_check_result (rs->buf); | |
8722 | } | |
8723 | ||
a76d924d DJ |
8724 | /* Flash writing can take quite some time. We'll set |
8725 | effectively infinite timeout for flash operations. | |
8726 | In future, we'll need to decide on a better approach. */ | |
8727 | static const int remote_flash_timeout = 1000; | |
8728 | ||
f6ac5f3d PA |
8729 | void |
8730 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 8731 | { |
f5656ead | 8732 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8733 | enum packet_result ret; |
2ec845e7 TT |
8734 | scoped_restore restore_timeout |
8735 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8736 | |
8737 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8738 | phex (address, addr_size), |
a76d924d DJ |
8739 | phex (length, 4)); |
8740 | switch (ret) | |
8741 | { | |
8742 | case PACKET_UNKNOWN: | |
8743 | error (_("Remote target does not support flash erase")); | |
8744 | case PACKET_ERROR: | |
8745 | error (_("Error erasing flash with vFlashErase packet")); | |
8746 | default: | |
8747 | break; | |
8748 | } | |
a76d924d DJ |
8749 | } |
8750 | ||
9b409511 YQ |
8751 | static enum target_xfer_status |
8752 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8753 | ULONGEST length, ULONGEST *xfered_len, | |
8754 | const gdb_byte *data) | |
a76d924d | 8755 | { |
2ec845e7 TT |
8756 | scoped_restore restore_timeout |
8757 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8758 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8759 | xfered_len,'X', 0); | |
a76d924d DJ |
8760 | } |
8761 | ||
f6ac5f3d PA |
8762 | void |
8763 | remote_target::flash_done () | |
a76d924d | 8764 | { |
a76d924d | 8765 | int ret; |
a76d924d | 8766 | |
2ec845e7 TT |
8767 | scoped_restore restore_timeout |
8768 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8769 | ||
a76d924d | 8770 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8771 | |
8772 | switch (ret) | |
8773 | { | |
8774 | case PACKET_UNKNOWN: | |
8775 | error (_("Remote target does not support vFlashDone")); | |
8776 | case PACKET_ERROR: | |
8777 | error (_("Error finishing flash operation")); | |
8778 | default: | |
8779 | break; | |
8780 | } | |
8781 | } | |
8782 | ||
f6ac5f3d PA |
8783 | void |
8784 | remote_target::files_info () | |
c906108c SS |
8785 | { |
8786 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8787 | } | |
8788 | \f | |
8789 | /* Stuff for dealing with the packets which are part of this protocol. | |
8790 | See comment at top of file for details. */ | |
8791 | ||
1927e618 PA |
8792 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8793 | error to higher layers. Called when a serial error is detected. | |
8794 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8795 | the system error message for errno at function entry and final dot |
8796 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8797 | |
8798 | static void | |
8799 | unpush_and_perror (const char *string) | |
8800 | { | |
d6cb50a2 | 8801 | int saved_errno = errno; |
1927e618 PA |
8802 | |
8803 | remote_unpush_target (); | |
d6cb50a2 JK |
8804 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8805 | safe_strerror (saved_errno)); | |
1927e618 PA |
8806 | } |
8807 | ||
048094ac PA |
8808 | /* Read a single character from the remote end. The current quit |
8809 | handler is overridden to avoid quitting in the middle of packet | |
8810 | sequence, as that would break communication with the remote server. | |
8811 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8812 | |
8813 | static int | |
fba45db2 | 8814 | readchar (int timeout) |
c906108c SS |
8815 | { |
8816 | int ch; | |
5d93a237 | 8817 | struct remote_state *rs = get_remote_state (); |
048094ac | 8818 | |
2ec845e7 TT |
8819 | { |
8820 | scoped_restore restore_quit | |
8821 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8822 | |
2ec845e7 | 8823 | rs->got_ctrlc_during_io = 0; |
c906108c | 8824 | |
2ec845e7 | 8825 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8826 | |
2ec845e7 TT |
8827 | if (rs->got_ctrlc_during_io) |
8828 | set_quit_flag (); | |
8829 | } | |
048094ac | 8830 | |
2acceee2 | 8831 | if (ch >= 0) |
0876f84a | 8832 | return ch; |
2acceee2 JM |
8833 | |
8834 | switch ((enum serial_rc) ch) | |
c906108c SS |
8835 | { |
8836 | case SERIAL_EOF: | |
78a095c3 | 8837 | remote_unpush_target (); |
598d3636 | 8838 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8839 | /* no return */ |
c906108c | 8840 | case SERIAL_ERROR: |
1927e618 PA |
8841 | unpush_and_perror (_("Remote communication error. " |
8842 | "Target disconnected.")); | |
2acceee2 | 8843 | /* no return */ |
c906108c | 8844 | case SERIAL_TIMEOUT: |
2acceee2 | 8845 | break; |
c906108c | 8846 | } |
2acceee2 | 8847 | return ch; |
c906108c SS |
8848 | } |
8849 | ||
c33e31fd | 8850 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8851 | writing fails. The current quit handler is overridden to avoid |
8852 | quitting in the middle of packet sequence, as that would break | |
8853 | communication with the remote server. See | |
8854 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8855 | |
8856 | static void | |
8857 | remote_serial_write (const char *str, int len) | |
8858 | { | |
5d93a237 | 8859 | struct remote_state *rs = get_remote_state (); |
048094ac | 8860 | |
2ec845e7 TT |
8861 | scoped_restore restore_quit |
8862 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8863 | |
8864 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8865 | |
8866 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8867 | { |
1927e618 PA |
8868 | unpush_and_perror (_("Remote communication error. " |
8869 | "Target disconnected.")); | |
c33e31fd | 8870 | } |
048094ac PA |
8871 | |
8872 | if (rs->got_ctrlc_during_io) | |
8873 | set_quit_flag (); | |
c33e31fd PA |
8874 | } |
8875 | ||
b3ced9ba PA |
8876 | /* Return a string representing an escaped version of BUF, of len N. |
8877 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8878 | |
b3ced9ba | 8879 | static std::string |
6e5abd65 PA |
8880 | escape_buffer (const char *buf, int n) |
8881 | { | |
d7e74731 | 8882 | string_file stb; |
6e5abd65 | 8883 | |
d7e74731 PA |
8884 | stb.putstrn (buf, n, '\\'); |
8885 | return std::move (stb.string ()); | |
6e5abd65 PA |
8886 | } |
8887 | ||
c906108c SS |
8888 | /* Display a null-terminated packet on stdout, for debugging, using C |
8889 | string notation. */ | |
8890 | ||
8891 | static void | |
baa336ce | 8892 | print_packet (const char *buf) |
c906108c SS |
8893 | { |
8894 | puts_filtered ("\""); | |
43e526b9 | 8895 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8896 | puts_filtered ("\""); |
8897 | } | |
8898 | ||
8899 | int | |
baa336ce | 8900 | putpkt (const char *buf) |
c906108c SS |
8901 | { |
8902 | return putpkt_binary (buf, strlen (buf)); | |
8903 | } | |
8904 | ||
8905 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8906 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8907 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8908 | and for a possible /0 if we are debugging (remote_debug) and want |
8909 | to print the sent packet as a string. */ | |
c906108c SS |
8910 | |
8911 | static int | |
baa336ce | 8912 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8913 | { |
2d717e4f | 8914 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8915 | int i; |
8916 | unsigned char csum = 0; | |
b80406ac TT |
8917 | gdb::def_vector<char> data (cnt + 6); |
8918 | char *buf2 = data.data (); | |
085dd6e6 | 8919 | |
c906108c SS |
8920 | int ch; |
8921 | int tcount = 0; | |
8922 | char *p; | |
8923 | ||
e24a49d8 PA |
8924 | /* Catch cases like trying to read memory or listing threads while |
8925 | we're waiting for a stop reply. The remote server wouldn't be | |
8926 | ready to handle this request, so we'd hang and timeout. We don't | |
8927 | have to worry about this in synchronous mode, because in that | |
8928 | case it's not possible to issue a command while the target is | |
74531fed PA |
8929 | running. This is not a problem in non-stop mode, because in that |
8930 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8931 | if (!target_is_non_stop_p () |
8932 | && target_is_async_p () | |
8933 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8934 | { |
8935 | error (_("Cannot execute this command while the target is running.\n" | |
8936 | "Use the \"interrupt\" command to stop the target\n" | |
8937 | "and then try again.")); | |
8938 | } | |
e24a49d8 | 8939 | |
2d717e4f DJ |
8940 | /* We're sending out a new packet. Make sure we don't look at a |
8941 | stale cached response. */ | |
8942 | rs->cached_wait_status = 0; | |
8943 | ||
c906108c SS |
8944 | /* Copy the packet into buffer BUF2, encapsulating it |
8945 | and giving it a checksum. */ | |
8946 | ||
c906108c SS |
8947 | p = buf2; |
8948 | *p++ = '$'; | |
8949 | ||
8950 | for (i = 0; i < cnt; i++) | |
8951 | { | |
8952 | csum += buf[i]; | |
8953 | *p++ = buf[i]; | |
8954 | } | |
8955 | *p++ = '#'; | |
8956 | *p++ = tohex ((csum >> 4) & 0xf); | |
8957 | *p++ = tohex (csum & 0xf); | |
8958 | ||
8959 | /* Send it over and over until we get a positive ack. */ | |
8960 | ||
8961 | while (1) | |
8962 | { | |
8963 | int started_error_output = 0; | |
8964 | ||
8965 | if (remote_debug) | |
8966 | { | |
8967 | *p = '\0'; | |
b3ced9ba | 8968 | |
6f8976bf YQ |
8969 | int len = (int) (p - buf2); |
8970 | ||
8971 | std::string str | |
8972 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
8973 | ||
8974 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
8975 | ||
567a3e54 SM |
8976 | if (len > REMOTE_DEBUG_MAX_CHAR) |
8977 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
8978 | len - REMOTE_DEBUG_MAX_CHAR); | |
6f8976bf YQ |
8979 | |
8980 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 8981 | |
0f71a2f6 | 8982 | gdb_flush (gdb_stdlog); |
c906108c | 8983 | } |
c33e31fd | 8984 | remote_serial_write (buf2, p - buf2); |
c906108c | 8985 | |
a6f3e723 SL |
8986 | /* If this is a no acks version of the remote protocol, send the |
8987 | packet and move on. */ | |
8988 | if (rs->noack_mode) | |
8989 | break; | |
8990 | ||
74531fed PA |
8991 | /* Read until either a timeout occurs (-2) or '+' is read. |
8992 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8993 | while (1) |
8994 | { | |
8995 | ch = readchar (remote_timeout); | |
8996 | ||
c5aa993b | 8997 | if (remote_debug) |
c906108c SS |
8998 | { |
8999 | switch (ch) | |
9000 | { | |
9001 | case '+': | |
1216fa2c | 9002 | case '-': |
c906108c SS |
9003 | case SERIAL_TIMEOUT: |
9004 | case '$': | |
74531fed | 9005 | case '%': |
c906108c SS |
9006 | if (started_error_output) |
9007 | { | |
9008 | putchar_unfiltered ('\n'); | |
9009 | started_error_output = 0; | |
9010 | } | |
9011 | } | |
9012 | } | |
9013 | ||
9014 | switch (ch) | |
9015 | { | |
9016 | case '+': | |
9017 | if (remote_debug) | |
0f71a2f6 | 9018 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9019 | return 1; |
1216fa2c AC |
9020 | case '-': |
9021 | if (remote_debug) | |
9022 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9023 | /* FALLTHROUGH */ |
c906108c | 9024 | case SERIAL_TIMEOUT: |
c5aa993b | 9025 | tcount++; |
c906108c | 9026 | if (tcount > 3) |
b80406ac | 9027 | return 0; |
23860348 | 9028 | break; /* Retransmit buffer. */ |
c906108c SS |
9029 | case '$': |
9030 | { | |
40e3f985 | 9031 | if (remote_debug) |
2bc416ba | 9032 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9033 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9034 | /* It's probably an old response sent because an ACK |
9035 | was lost. Gobble up the packet and ack it so it | |
9036 | doesn't get retransmitted when we resend this | |
9037 | packet. */ | |
6d820c5c | 9038 | skip_frame (); |
c33e31fd | 9039 | remote_serial_write ("+", 1); |
23860348 | 9040 | continue; /* Now, go look for +. */ |
c906108c | 9041 | } |
74531fed PA |
9042 | |
9043 | case '%': | |
9044 | { | |
9045 | int val; | |
9046 | ||
9047 | /* If we got a notification, handle it, and go back to looking | |
9048 | for an ack. */ | |
9049 | /* We've found the start of a notification. Now | |
9050 | collect the data. */ | |
9051 | val = read_frame (&rs->buf, &rs->buf_size); | |
9052 | if (val >= 0) | |
9053 | { | |
9054 | if (remote_debug) | |
9055 | { | |
b3ced9ba | 9056 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 9057 | |
6e5abd65 PA |
9058 | fprintf_unfiltered (gdb_stdlog, |
9059 | " Notification received: %s\n", | |
b3ced9ba | 9060 | str.c_str ()); |
74531fed | 9061 | } |
5965e028 | 9062 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
9063 | /* We're in sync now, rewait for the ack. */ |
9064 | tcount = 0; | |
9065 | } | |
9066 | else | |
9067 | { | |
9068 | if (remote_debug) | |
9069 | { | |
9070 | if (!started_error_output) | |
9071 | { | |
9072 | started_error_output = 1; | |
9073 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9074 | } | |
9075 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
9076 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
9077 | } | |
9078 | } | |
9079 | continue; | |
9080 | } | |
9081 | /* fall-through */ | |
c906108c SS |
9082 | default: |
9083 | if (remote_debug) | |
9084 | { | |
9085 | if (!started_error_output) | |
9086 | { | |
9087 | started_error_output = 1; | |
0f71a2f6 | 9088 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9089 | } |
0f71a2f6 | 9090 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9091 | } |
9092 | continue; | |
9093 | } | |
23860348 | 9094 | break; /* Here to retransmit. */ |
c906108c SS |
9095 | } |
9096 | ||
9097 | #if 0 | |
9098 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
9099 | able to get out next time we call QUIT, without anything as |
9100 | violent as interrupt_query. If we want to provide a way out of | |
9101 | here without getting to the next QUIT, it should be based on | |
9102 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9103 | if (quit_flag) |
9104 | { | |
9105 | quit_flag = 0; | |
9106 | interrupt_query (); | |
9107 | } | |
9108 | #endif | |
9109 | } | |
a5c0808e | 9110 | |
a6f3e723 | 9111 | return 0; |
c906108c SS |
9112 | } |
9113 | ||
6d820c5c DJ |
9114 | /* Come here after finding the start of a frame when we expected an |
9115 | ack. Do our best to discard the rest of this packet. */ | |
9116 | ||
9117 | static void | |
9118 | skip_frame (void) | |
9119 | { | |
9120 | int c; | |
9121 | ||
9122 | while (1) | |
9123 | { | |
9124 | c = readchar (remote_timeout); | |
9125 | switch (c) | |
9126 | { | |
9127 | case SERIAL_TIMEOUT: | |
9128 | /* Nothing we can do. */ | |
9129 | return; | |
9130 | case '#': | |
9131 | /* Discard the two bytes of checksum and stop. */ | |
9132 | c = readchar (remote_timeout); | |
9133 | if (c >= 0) | |
9134 | c = readchar (remote_timeout); | |
9135 | ||
9136 | return; | |
9137 | case '*': /* Run length encoding. */ | |
9138 | /* Discard the repeat count. */ | |
9139 | c = readchar (remote_timeout); | |
9140 | if (c < 0) | |
9141 | return; | |
9142 | break; | |
9143 | default: | |
9144 | /* A regular character. */ | |
9145 | break; | |
9146 | } | |
9147 | } | |
9148 | } | |
9149 | ||
c906108c | 9150 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9151 | into *BUF, verifying the checksum, length, and handling run-length |
9152 | compression. NUL terminate the buffer. If there is not enough room, | |
9153 | expand *BUF using xrealloc. | |
c906108c | 9154 | |
c2d11a7d JM |
9155 | Returns -1 on error, number of characters in buffer (ignoring the |
9156 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9157 | SERIAL status indications). */ |
c2d11a7d JM |
9158 | |
9159 | static long | |
6d820c5c DJ |
9160 | read_frame (char **buf_p, |
9161 | long *sizeof_buf) | |
c906108c SS |
9162 | { |
9163 | unsigned char csum; | |
c2d11a7d | 9164 | long bc; |
c906108c | 9165 | int c; |
6d820c5c | 9166 | char *buf = *buf_p; |
a6f3e723 | 9167 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9168 | |
9169 | csum = 0; | |
c2d11a7d | 9170 | bc = 0; |
c906108c SS |
9171 | |
9172 | while (1) | |
9173 | { | |
9174 | c = readchar (remote_timeout); | |
c906108c SS |
9175 | switch (c) |
9176 | { | |
9177 | case SERIAL_TIMEOUT: | |
9178 | if (remote_debug) | |
0f71a2f6 | 9179 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9180 | return -1; |
c906108c SS |
9181 | case '$': |
9182 | if (remote_debug) | |
0f71a2f6 JM |
9183 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9184 | gdb_stdlog); | |
23860348 | 9185 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9186 | case '#': |
9187 | { | |
9188 | unsigned char pktcsum; | |
e1b09194 AC |
9189 | int check_0 = 0; |
9190 | int check_1 = 0; | |
c906108c | 9191 | |
c2d11a7d | 9192 | buf[bc] = '\0'; |
c906108c | 9193 | |
e1b09194 AC |
9194 | check_0 = readchar (remote_timeout); |
9195 | if (check_0 >= 0) | |
9196 | check_1 = readchar (remote_timeout); | |
802188a7 | 9197 | |
e1b09194 AC |
9198 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9199 | { | |
9200 | if (remote_debug) | |
2bc416ba | 9201 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9202 | gdb_stdlog); |
e1b09194 AC |
9203 | return -1; |
9204 | } | |
9205 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9206 | { |
9207 | if (remote_debug) | |
2bc416ba | 9208 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9209 | gdb_stdlog); |
40e3f985 FN |
9210 | return -1; |
9211 | } | |
c906108c | 9212 | |
a6f3e723 SL |
9213 | /* Don't recompute the checksum; with no ack packets we |
9214 | don't have any way to indicate a packet retransmission | |
9215 | is necessary. */ | |
9216 | if (rs->noack_mode) | |
9217 | return bc; | |
9218 | ||
e1b09194 | 9219 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9220 | if (csum == pktcsum) |
c2d11a7d | 9221 | return bc; |
c906108c | 9222 | |
c5aa993b | 9223 | if (remote_debug) |
c906108c | 9224 | { |
b3ced9ba | 9225 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9226 | |
6e5abd65 | 9227 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9228 | "Bad checksum, sentsum=0x%x, " |
9229 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9230 | pktcsum, csum, str.c_str ()); |
c906108c | 9231 | } |
c2d11a7d | 9232 | /* Number of characters in buffer ignoring trailing |
23860348 | 9233 | NULL. */ |
c2d11a7d | 9234 | return -1; |
c906108c | 9235 | } |
23860348 | 9236 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9237 | { |
9238 | int repeat; | |
c906108c | 9239 | |
a744cf53 | 9240 | csum += c; |
b4501125 AC |
9241 | c = readchar (remote_timeout); |
9242 | csum += c; | |
23860348 | 9243 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9244 | |
23860348 | 9245 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9246 | |
6d820c5c | 9247 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9248 | { |
6d820c5c DJ |
9249 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
9250 | { | |
9251 | /* Make some more room in the buffer. */ | |
9252 | *sizeof_buf += repeat; | |
224c3ddb | 9253 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9254 | buf = *buf_p; |
9255 | } | |
9256 | ||
c2d11a7d JM |
9257 | memset (&buf[bc], buf[bc - 1], repeat); |
9258 | bc += repeat; | |
c2c6d25f JM |
9259 | continue; |
9260 | } | |
9261 | ||
c2d11a7d | 9262 | buf[bc] = '\0'; |
6d820c5c | 9263 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9264 | return -1; |
c2c6d25f | 9265 | } |
c906108c | 9266 | default: |
6d820c5c | 9267 | if (bc >= *sizeof_buf - 1) |
c906108c | 9268 | { |
6d820c5c DJ |
9269 | /* Make some more room in the buffer. */ |
9270 | *sizeof_buf *= 2; | |
224c3ddb | 9271 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9272 | buf = *buf_p; |
c906108c SS |
9273 | } |
9274 | ||
6d820c5c DJ |
9275 | buf[bc++] = c; |
9276 | csum += c; | |
9277 | continue; | |
c906108c SS |
9278 | } |
9279 | } | |
9280 | } | |
9281 | ||
9282 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9283 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9284 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9285 | rather than timing out; this is used (in synchronous mode) to wait | |
9286 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9287 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9288 | don't have to change all the calls to getpkt to deal with the | |
9289 | return value, because at the moment I don't know what the right | |
23860348 | 9290 | thing to do it for those. */ |
c906108c | 9291 | void |
6d820c5c DJ |
9292 | getpkt (char **buf, |
9293 | long *sizeof_buf, | |
c2d11a7d | 9294 | int forever) |
d9fcf2fb | 9295 | { |
54887903 | 9296 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9297 | } |
9298 | ||
9299 | ||
9300 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9301 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9302 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9303 | rather than timing out; this is used (in synchronous mode) to wait | |
9304 | for a target that is is executing user code to stop. If FOREVER == | |
9305 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9306 | indication of this to the caller. Otherwise return the number of |
9307 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9308 | enough reason to return to the caller. *IS_NOTIF is an output |
9309 | boolean that indicates whether *BUF holds a notification or not | |
9310 | (a regular packet). */ | |
74531fed | 9311 | |
3172dc30 | 9312 | static int |
74531fed | 9313 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9314 | int expecting_notif, int *is_notif) |
c906108c | 9315 | { |
2d717e4f | 9316 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9317 | int c; |
9318 | int tries; | |
9319 | int timeout; | |
df4b58fe | 9320 | int val = -1; |
c906108c | 9321 | |
2d717e4f DJ |
9322 | /* We're reading a new response. Make sure we don't look at a |
9323 | previously cached response. */ | |
9324 | rs->cached_wait_status = 0; | |
9325 | ||
6d820c5c | 9326 | strcpy (*buf, "timeout"); |
c906108c SS |
9327 | |
9328 | if (forever) | |
74531fed PA |
9329 | timeout = watchdog > 0 ? watchdog : -1; |
9330 | else if (expecting_notif) | |
9331 | timeout = 0; /* There should already be a char in the buffer. If | |
9332 | not, bail out. */ | |
c906108c SS |
9333 | else |
9334 | timeout = remote_timeout; | |
9335 | ||
9336 | #define MAX_TRIES 3 | |
9337 | ||
74531fed PA |
9338 | /* Process any number of notifications, and then return when |
9339 | we get a packet. */ | |
9340 | for (;;) | |
c906108c | 9341 | { |
d9c43928 | 9342 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9343 | times. */ |
9344 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9345 | { |
74531fed PA |
9346 | /* This can loop forever if the remote side sends us |
9347 | characters continuously, but if it pauses, we'll get | |
9348 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9349 | we'll count that as a retry. | |
9350 | ||
9351 | Note that even when forever is set, we will only wait | |
9352 | forever prior to the start of a packet. After that, we | |
9353 | expect characters to arrive at a brisk pace. They should | |
9354 | show up within remote_timeout intervals. */ | |
9355 | do | |
9356 | c = readchar (timeout); | |
9357 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9358 | |
9359 | if (c == SERIAL_TIMEOUT) | |
9360 | { | |
74531fed PA |
9361 | if (expecting_notif) |
9362 | return -1; /* Don't complain, it's normal to not get | |
9363 | anything in this case. */ | |
9364 | ||
23860348 | 9365 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9366 | { |
78a095c3 | 9367 | remote_unpush_target (); |
598d3636 JK |
9368 | throw_error (TARGET_CLOSE_ERROR, |
9369 | _("Watchdog timeout has expired. " | |
9370 | "Target detached.")); | |
c906108c | 9371 | } |
c906108c | 9372 | if (remote_debug) |
0f71a2f6 | 9373 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9374 | } |
74531fed PA |
9375 | else |
9376 | { | |
9377 | /* We've found the start of a packet or notification. | |
9378 | Now collect the data. */ | |
9379 | val = read_frame (buf, sizeof_buf); | |
9380 | if (val >= 0) | |
9381 | break; | |
9382 | } | |
9383 | ||
c33e31fd | 9384 | remote_serial_write ("-", 1); |
c906108c | 9385 | } |
c906108c | 9386 | |
74531fed PA |
9387 | if (tries > MAX_TRIES) |
9388 | { | |
9389 | /* We have tried hard enough, and just can't receive the | |
9390 | packet/notification. Give up. */ | |
9391 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9392 | |
74531fed PA |
9393 | /* Skip the ack char if we're in no-ack mode. */ |
9394 | if (!rs->noack_mode) | |
c33e31fd | 9395 | remote_serial_write ("+", 1); |
74531fed PA |
9396 | return -1; |
9397 | } | |
c906108c | 9398 | |
74531fed PA |
9399 | /* If we got an ordinary packet, return that to our caller. */ |
9400 | if (c == '$') | |
c906108c SS |
9401 | { |
9402 | if (remote_debug) | |
43e526b9 | 9403 | { |
6f8976bf YQ |
9404 | std::string str |
9405 | = escape_buffer (*buf, | |
9406 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9407 | ||
9408 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9409 | str.c_str ()); | |
9410 | ||
567a3e54 SM |
9411 | if (val > REMOTE_DEBUG_MAX_CHAR) |
9412 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9413 | val - REMOTE_DEBUG_MAX_CHAR); | |
6e5abd65 | 9414 | |
6f8976bf | 9415 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9416 | } |
a6f3e723 SL |
9417 | |
9418 | /* Skip the ack char if we're in no-ack mode. */ | |
9419 | if (!rs->noack_mode) | |
c33e31fd | 9420 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9421 | if (is_notif != NULL) |
9422 | *is_notif = 0; | |
0876f84a | 9423 | return val; |
c906108c SS |
9424 | } |
9425 | ||
74531fed PA |
9426 | /* If we got a notification, handle it, and go back to looking |
9427 | for a packet. */ | |
9428 | else | |
9429 | { | |
9430 | gdb_assert (c == '%'); | |
9431 | ||
9432 | if (remote_debug) | |
9433 | { | |
b3ced9ba | 9434 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9435 | |
6e5abd65 PA |
9436 | fprintf_unfiltered (gdb_stdlog, |
9437 | " Notification received: %s\n", | |
b3ced9ba | 9438 | str.c_str ()); |
74531fed | 9439 | } |
fee9eda9 YQ |
9440 | if (is_notif != NULL) |
9441 | *is_notif = 1; | |
c906108c | 9442 | |
5965e028 | 9443 | handle_notification (rs->notif_state, *buf); |
c906108c | 9444 | |
74531fed | 9445 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9446 | |
74531fed | 9447 | if (expecting_notif) |
fee9eda9 | 9448 | return val; |
74531fed PA |
9449 | } |
9450 | } | |
9451 | } | |
9452 | ||
9453 | static int | |
9454 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9455 | { | |
fee9eda9 | 9456 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9457 | } |
9458 | ||
9459 | static int | |
fee9eda9 YQ |
9460 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9461 | int *is_notif) | |
74531fed | 9462 | { |
fee9eda9 YQ |
9463 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9464 | is_notif); | |
c906108c | 9465 | } |
74531fed | 9466 | |
cbb8991c DB |
9467 | /* Check whether EVENT is a fork event for the process specified |
9468 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9469 | ||
9470 | static int | |
9471 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9472 | QUEUE_ITER (stop_reply_p) *iter, | |
9473 | stop_reply_p event, | |
9474 | void *data) | |
9475 | { | |
19ba03f4 | 9476 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9477 | int parent_pid = *(int *) param->input; |
9478 | ||
9479 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9480 | { | |
9481 | struct remote_state *rs = get_remote_state (); | |
9482 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9483 | int res; | |
9484 | ||
9485 | res = remote_vkill (child_pid, rs); | |
9486 | if (res != 0) | |
9487 | error (_("Can't kill fork child process %d"), child_pid); | |
9488 | } | |
9489 | ||
9490 | return 1; | |
9491 | } | |
9492 | ||
9493 | /* Kill any new fork children of process PID that haven't been | |
9494 | processed by follow_fork. */ | |
9495 | ||
9496 | static void | |
9497 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9498 | { | |
9499 | struct thread_info *thread; | |
9500 | struct notif_client *notif = ¬if_client_stop; | |
9501 | struct queue_iter_param param; | |
9502 | ||
9503 | /* Kill the fork child threads of any threads in process PID | |
9504 | that are stopped at a fork event. */ | |
9505 | ALL_NON_EXITED_THREADS (thread) | |
9506 | { | |
9507 | struct target_waitstatus *ws = &thread->pending_follow; | |
9508 | ||
9509 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9510 | { | |
9511 | struct remote_state *rs = get_remote_state (); | |
9512 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9513 | int res; | |
9514 | ||
9515 | res = remote_vkill (child_pid, rs); | |
9516 | if (res != 0) | |
9517 | error (_("Can't kill fork child process %d"), child_pid); | |
9518 | } | |
9519 | } | |
9520 | ||
9521 | /* Check for any pending fork events (not reported or processed yet) | |
9522 | in process PID and kill those fork child threads as well. */ | |
9523 | remote_notif_get_pending_events (notif); | |
9524 | param.input = &pid; | |
9525 | param.output = NULL; | |
9526 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9527 | kill_child_of_pending_fork, ¶m); | |
9528 | } | |
9529 | ||
c906108c | 9530 | \f |
8020350c DB |
9531 | /* Target hook to kill the current inferior. */ |
9532 | ||
f6ac5f3d PA |
9533 | void |
9534 | remote_target::kill () | |
43ff13b4 | 9535 | { |
8020350c DB |
9536 | int res = -1; |
9537 | int pid = ptid_get_pid (inferior_ptid); | |
9538 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9539 | |
8020350c | 9540 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9541 | { |
8020350c DB |
9542 | /* If we're stopped while forking and we haven't followed yet, |
9543 | kill the child task. We need to do this before killing the | |
9544 | parent task because if this is a vfork then the parent will | |
9545 | be sleeping. */ | |
9546 | kill_new_fork_children (pid, rs); | |
9547 | ||
9548 | res = remote_vkill (pid, rs); | |
9549 | if (res == 0) | |
0fdf84ca | 9550 | { |
bc1e6c81 | 9551 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9552 | return; |
9553 | } | |
8020350c | 9554 | } |
0fdf84ca | 9555 | |
8020350c DB |
9556 | /* If we are in 'target remote' mode and we are killing the only |
9557 | inferior, then we will tell gdbserver to exit and unpush the | |
9558 | target. */ | |
9559 | if (res == -1 && !remote_multi_process_p (rs) | |
9560 | && number_of_live_inferiors () == 1) | |
9561 | { | |
9562 | remote_kill_k (); | |
9563 | ||
9564 | /* We've killed the remote end, we get to mourn it. If we are | |
9565 | not in extended mode, mourning the inferior also unpushes | |
9566 | remote_ops from the target stack, which closes the remote | |
9567 | connection. */ | |
bc1e6c81 | 9568 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9569 | |
9570 | return; | |
0fdf84ca | 9571 | } |
43ff13b4 | 9572 | |
8020350c | 9573 | error (_("Can't kill process")); |
43ff13b4 JM |
9574 | } |
9575 | ||
8020350c DB |
9576 | /* Send a kill request to the target using the 'vKill' packet. */ |
9577 | ||
82f73884 PA |
9578 | static int |
9579 | remote_vkill (int pid, struct remote_state *rs) | |
9580 | { | |
4082afcc | 9581 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9582 | return -1; |
9583 | ||
9584 | /* Tell the remote target to detach. */ | |
bba74b36 | 9585 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9586 | putpkt (rs->buf); |
9587 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9588 | ||
4082afcc PA |
9589 | switch (packet_ok (rs->buf, |
9590 | &remote_protocol_packets[PACKET_vKill])) | |
9591 | { | |
9592 | case PACKET_OK: | |
9593 | return 0; | |
9594 | case PACKET_ERROR: | |
9595 | return 1; | |
9596 | case PACKET_UNKNOWN: | |
9597 | return -1; | |
9598 | default: | |
9599 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9600 | } | |
82f73884 PA |
9601 | } |
9602 | ||
8020350c DB |
9603 | /* Send a kill request to the target using the 'k' packet. */ |
9604 | ||
82f73884 | 9605 | static void |
8020350c | 9606 | remote_kill_k (void) |
82f73884 | 9607 | { |
8020350c DB |
9608 | /* Catch errors so the user can quit from gdb even when we |
9609 | aren't on speaking terms with the remote system. */ | |
9610 | TRY | |
82f73884 | 9611 | { |
82f73884 | 9612 | putpkt ("k"); |
82f73884 | 9613 | } |
8020350c DB |
9614 | CATCH (ex, RETURN_MASK_ERROR) |
9615 | { | |
9616 | if (ex.error == TARGET_CLOSE_ERROR) | |
9617 | { | |
9618 | /* If we got an (EOF) error that caused the target | |
9619 | to go away, then we're done, that's what we wanted. | |
9620 | "k" is susceptible to cause a premature EOF, given | |
9621 | that the remote server isn't actually required to | |
9622 | reply to "k", and it can happen that it doesn't | |
9623 | even get to reply ACK to the "k". */ | |
9624 | return; | |
9625 | } | |
82f73884 | 9626 | |
8020350c DB |
9627 | /* Otherwise, something went wrong. We didn't actually kill |
9628 | the target. Just propagate the exception, and let the | |
9629 | user or higher layers decide what to do. */ | |
9630 | throw_exception (ex); | |
9631 | } | |
9632 | END_CATCH | |
82f73884 PA |
9633 | } |
9634 | ||
f6ac5f3d PA |
9635 | void |
9636 | remote_target::mourn_inferior () | |
c906108c | 9637 | { |
8020350c | 9638 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9639 | |
8020350c DB |
9640 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9641 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9642 | { | |
f6ac5f3d | 9643 | unpush_target (this); |
c906108c | 9644 | |
8020350c DB |
9645 | /* remote_close takes care of doing most of the clean up. */ |
9646 | generic_mourn_inferior (); | |
9647 | return; | |
9648 | } | |
c906108c | 9649 | |
e24a49d8 PA |
9650 | /* In case we got here due to an error, but we're going to stay |
9651 | connected. */ | |
9652 | rs->waiting_for_stop_reply = 0; | |
9653 | ||
dc1981d7 PA |
9654 | /* If the current general thread belonged to the process we just |
9655 | detached from or has exited, the remote side current general | |
9656 | thread becomes undefined. Considering a case like this: | |
9657 | ||
9658 | - We just got here due to a detach. | |
9659 | - The process that we're detaching from happens to immediately | |
9660 | report a global breakpoint being hit in non-stop mode, in the | |
9661 | same thread we had selected before. | |
9662 | - GDB attaches to this process again. | |
9663 | - This event happens to be the next event we handle. | |
9664 | ||
9665 | GDB would consider that the current general thread didn't need to | |
9666 | be set on the stub side (with Hg), since for all it knew, | |
9667 | GENERAL_THREAD hadn't changed. | |
9668 | ||
9669 | Notice that although in all-stop mode, the remote server always | |
9670 | sets the current thread to the thread reporting the stop event, | |
9671 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9672 | not* change the current thread when reporting a breakpoint hit, | |
9673 | due to the decoupling of event reporting and event handling. | |
9674 | ||
9675 | To keep things simple, we always invalidate our notion of the | |
9676 | current thread. */ | |
47f8a51d | 9677 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9678 | |
8020350c | 9679 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9680 | generic_mourn_inferior (); |
9681 | ||
d729566a | 9682 | if (!have_inferiors ()) |
2d717e4f | 9683 | { |
82f73884 PA |
9684 | if (!remote_multi_process_p (rs)) |
9685 | { | |
9686 | /* Check whether the target is running now - some remote stubs | |
9687 | automatically restart after kill. */ | |
9688 | putpkt ("?"); | |
9689 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9690 | ||
9691 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9692 | { | |
3e43a32a MS |
9693 | /* Assume that the target has been restarted. Set |
9694 | inferior_ptid so that bits of core GDB realizes | |
9695 | there's something here, e.g., so that the user can | |
9696 | say "kill" again. */ | |
82f73884 PA |
9697 | inferior_ptid = magic_null_ptid; |
9698 | } | |
82f73884 | 9699 | } |
2d717e4f DJ |
9700 | } |
9701 | } | |
c906108c | 9702 | |
f6ac5f3d PA |
9703 | int |
9704 | extended_remote_target::supports_disable_randomization () | |
03583c20 | 9705 | { |
4082afcc | 9706 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9707 | } |
9708 | ||
9709 | static void | |
9710 | extended_remote_disable_randomization (int val) | |
9711 | { | |
9712 | struct remote_state *rs = get_remote_state (); | |
9713 | char *reply; | |
9714 | ||
bba74b36 YQ |
9715 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9716 | val); | |
03583c20 | 9717 | putpkt (rs->buf); |
b6bb3468 | 9718 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9719 | if (*reply == '\0') |
9720 | error (_("Target does not support QDisableRandomization.")); | |
9721 | if (strcmp (reply, "OK") != 0) | |
9722 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9723 | } | |
9724 | ||
2d717e4f | 9725 | static int |
7c5ded6a | 9726 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9727 | { |
9728 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9729 | int len; |
94585166 | 9730 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9731 | |
2d717e4f DJ |
9732 | /* If the user has disabled vRun support, or we have detected that |
9733 | support is not available, do not try it. */ | |
4082afcc | 9734 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9735 | return -1; |
424163ea | 9736 | |
2d717e4f DJ |
9737 | strcpy (rs->buf, "vRun;"); |
9738 | len = strlen (rs->buf); | |
c906108c | 9739 | |
2d717e4f DJ |
9740 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9741 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9742 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9743 | strlen (remote_exec_file)); | |
2d717e4f | 9744 | |
7c5ded6a | 9745 | if (!args.empty ()) |
2d717e4f | 9746 | { |
2d717e4f | 9747 | int i; |
2d717e4f | 9748 | |
773a1edc | 9749 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9750 | for (i = 0; argv[i] != NULL; i++) |
9751 | { | |
9752 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9753 | error (_("Argument list too long for run packet")); | |
9754 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9755 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9756 | strlen (argv[i])); | |
2d717e4f | 9757 | } |
2d717e4f DJ |
9758 | } |
9759 | ||
9760 | rs->buf[len++] = '\0'; | |
9761 | ||
9762 | putpkt (rs->buf); | |
9763 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9764 | ||
4082afcc | 9765 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9766 | { |
4082afcc | 9767 | case PACKET_OK: |
3405876a | 9768 | /* We have a wait response. All is well. */ |
2d717e4f | 9769 | return 0; |
4082afcc PA |
9770 | case PACKET_UNKNOWN: |
9771 | return -1; | |
9772 | case PACKET_ERROR: | |
2d717e4f DJ |
9773 | if (remote_exec_file[0] == '\0') |
9774 | error (_("Running the default executable on the remote target failed; " | |
9775 | "try \"set remote exec-file\"?")); | |
9776 | else | |
9777 | error (_("Running \"%s\" on the remote target failed"), | |
9778 | remote_exec_file); | |
4082afcc PA |
9779 | default: |
9780 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9781 | } |
c906108c SS |
9782 | } |
9783 | ||
0a2dde4a SDJ |
9784 | /* Helper function to send set/unset environment packets. ACTION is |
9785 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9786 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9787 | sent. */ | |
9788 | ||
9789 | static void | |
9790 | send_environment_packet (struct remote_state *rs, | |
9791 | const char *action, | |
9792 | const char *packet, | |
9793 | const char *value) | |
9794 | { | |
9795 | /* Convert the environment variable to an hex string, which | |
9796 | is the best format to be transmitted over the wire. */ | |
9797 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9798 | strlen (value)); | |
9799 | ||
9800 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9801 | "%s:%s", packet, encoded_value.c_str ()); | |
9802 | ||
9803 | putpkt (rs->buf); | |
9804 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9805 | if (strcmp (rs->buf, "OK") != 0) | |
9806 | warning (_("Unable to %s environment variable '%s' on remote."), | |
9807 | action, value); | |
9808 | } | |
9809 | ||
9810 | /* Helper function to handle the QEnvironment* packets. */ | |
9811 | ||
9812 | static void | |
9813 | extended_remote_environment_support (struct remote_state *rs) | |
9814 | { | |
9815 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) | |
9816 | { | |
9817 | putpkt ("QEnvironmentReset"); | |
9818 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9819 | if (strcmp (rs->buf, "OK") != 0) | |
9820 | warning (_("Unable to reset environment on remote.")); | |
9821 | } | |
9822 | ||
9823 | gdb_environ *e = ¤t_inferior ()->environment; | |
9824 | ||
9825 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9826 | for (const std::string &el : e->user_set_env ()) | |
9827 | send_environment_packet (rs, "set", "QEnvironmentHexEncoded", | |
9828 | el.c_str ()); | |
9829 | ||
9830 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9831 | for (const std::string &el : e->user_unset_env ()) | |
9832 | send_environment_packet (rs, "unset", "QEnvironmentUnset", el.c_str ()); | |
9833 | } | |
9834 | ||
bc3b087d SDJ |
9835 | /* Helper function to set the current working directory for the |
9836 | inferior in the remote target. */ | |
9837 | ||
9838 | static void | |
9839 | extended_remote_set_inferior_cwd (struct remote_state *rs) | |
9840 | { | |
9841 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
9842 | { | |
9843 | const char *inferior_cwd = get_inferior_cwd (); | |
9844 | ||
9845 | if (inferior_cwd != NULL) | |
9846 | { | |
9847 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
9848 | strlen (inferior_cwd)); | |
9849 | ||
9850 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9851 | "QSetWorkingDir:%s", hexpath.c_str ()); | |
9852 | } | |
9853 | else | |
9854 | { | |
9855 | /* An empty inferior_cwd means that the user wants us to | |
9856 | reset the remote server's inferior's cwd. */ | |
9857 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9858 | "QSetWorkingDir:"); | |
9859 | } | |
9860 | ||
9861 | putpkt (rs->buf); | |
9862 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9863 | if (packet_ok (rs->buf, | |
9864 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
9865 | != PACKET_OK) | |
9866 | error (_("\ | |
9867 | Remote replied unexpectedly while setting the inferior's working\n\ | |
9868 | directory: %s"), | |
9869 | rs->buf); | |
9870 | ||
9871 | } | |
9872 | } | |
9873 | ||
2d717e4f DJ |
9874 | /* In the extended protocol we want to be able to do things like |
9875 | "run" and have them basically work as expected. So we need | |
9876 | a special create_inferior function. We support changing the | |
9877 | executable file and the command line arguments, but not the | |
9878 | environment. */ | |
9879 | ||
f6ac5f3d PA |
9880 | void |
9881 | extended_remote_target::create_inferior (const char *exec_file, | |
9882 | const std::string &args, | |
9883 | char **env, int from_tty) | |
43ff13b4 | 9884 | { |
3405876a PA |
9885 | int run_worked; |
9886 | char *stop_reply; | |
9887 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9888 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9889 | |
43ff13b4 | 9890 | /* If running asynchronously, register the target file descriptor |
23860348 | 9891 | with the event loop. */ |
75c99385 | 9892 | if (target_can_async_p ()) |
6a3753b3 | 9893 | target_async (1); |
43ff13b4 | 9894 | |
03583c20 | 9895 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 9896 | if (supports_disable_randomization ()) |
03583c20 UW |
9897 | extended_remote_disable_randomization (disable_randomization); |
9898 | ||
aefd8b33 SDJ |
9899 | /* If startup-with-shell is on, we inform gdbserver to start the |
9900 | remote inferior using a shell. */ | |
9901 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9902 | { | |
9903 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9904 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9905 | putpkt (rs->buf); | |
9906 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9907 | if (strcmp (rs->buf, "OK") != 0) | |
9908 | error (_("\ | |
9909 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9910 | rs->buf); | |
9911 | } | |
9912 | ||
0a2dde4a SDJ |
9913 | extended_remote_environment_support (rs); |
9914 | ||
bc3b087d SDJ |
9915 | extended_remote_set_inferior_cwd (rs); |
9916 | ||
43ff13b4 | 9917 | /* Now restart the remote server. */ |
3405876a PA |
9918 | run_worked = extended_remote_run (args) != -1; |
9919 | if (!run_worked) | |
2d717e4f DJ |
9920 | { |
9921 | /* vRun was not supported. Fail if we need it to do what the | |
9922 | user requested. */ | |
9923 | if (remote_exec_file[0]) | |
9924 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9925 | if (!args.empty ()) |
2d717e4f | 9926 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9927 | |
2d717e4f DJ |
9928 | /* Fall back to "R". */ |
9929 | extended_remote_restart (); | |
9930 | } | |
424163ea | 9931 | |
6c95b8df PA |
9932 | if (!have_inferiors ()) |
9933 | { | |
9934 | /* Clean up from the last time we ran, before we mark the target | |
9935 | running again. This will mark breakpoints uninserted, and | |
9936 | get_offsets may insert breakpoints. */ | |
9937 | init_thread_list (); | |
9938 | init_wait_for_inferior (); | |
9939 | } | |
45280a52 | 9940 | |
3405876a PA |
9941 | /* vRun's success return is a stop reply. */ |
9942 | stop_reply = run_worked ? rs->buf : NULL; | |
9943 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9944 | |
2d717e4f DJ |
9945 | /* Get updated offsets, if the stub uses qOffsets. */ |
9946 | get_offsets (); | |
2d717e4f | 9947 | } |
c906108c | 9948 | \f |
c5aa993b | 9949 | |
b775012e LM |
9950 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9951 | the list of conditions (in agent expression bytecode format), if any, the | |
9952 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9953 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9954 | |
9955 | static int | |
9956 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9957 | struct bp_target_info *bp_tgt, char *buf, |
9958 | char *buf_end) | |
b775012e | 9959 | { |
3cde5c42 | 9960 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
9961 | return 0; |
9962 | ||
9963 | buf += strlen (buf); | |
bba74b36 | 9964 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9965 | buf++; |
9966 | ||
83621223 | 9967 | /* Send conditions to the target. */ |
d538e36d | 9968 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 9969 | { |
bba74b36 | 9970 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 9971 | buf += strlen (buf); |
3cde5c42 | 9972 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
9973 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9974 | *buf = '\0'; | |
9975 | } | |
b775012e LM |
9976 | return 0; |
9977 | } | |
9978 | ||
d3ce09f5 SS |
9979 | static void |
9980 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9981 | struct bp_target_info *bp_tgt, char *buf) | |
9982 | { | |
3cde5c42 | 9983 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
9984 | return; |
9985 | ||
9986 | buf += strlen (buf); | |
9987 | ||
9988 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9989 | buf += strlen (buf); | |
9990 | ||
9991 | /* Concatenate all the agent expressions that are commands into the | |
9992 | cmds parameter. */ | |
df97be55 | 9993 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
9994 | { |
9995 | sprintf (buf, "X%x,", aexpr->len); | |
9996 | buf += strlen (buf); | |
3cde5c42 | 9997 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
9998 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9999 | *buf = '\0'; | |
10000 | } | |
d3ce09f5 SS |
10001 | } |
10002 | ||
8181d85f DJ |
10003 | /* Insert a breakpoint. On targets that have software breakpoint |
10004 | support, we ask the remote target to do the work; on targets | |
10005 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10006 | |
f6ac5f3d PA |
10007 | int |
10008 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10009 | struct bp_target_info *bp_tgt) | |
c906108c | 10010 | { |
d471ea57 AC |
10011 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10012 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10013 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10014 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10015 | |
4082afcc | 10016 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10017 | { |
0d5ed153 | 10018 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10019 | struct remote_state *rs; |
bba74b36 | 10020 | char *p, *endbuf; |
4fff2411 | 10021 | |
28439a30 PA |
10022 | /* Make sure the remote is pointing at the right process, if |
10023 | necessary. */ | |
10024 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10025 | set_general_process (); | |
10026 | ||
4fff2411 JZ |
10027 | rs = get_remote_state (); |
10028 | p = rs->buf; | |
bba74b36 | 10029 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 10030 | |
96baa820 JM |
10031 | *(p++) = 'Z'; |
10032 | *(p++) = '0'; | |
10033 | *(p++) = ','; | |
7c0f6dcc | 10034 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10035 | p += hexnumstr (p, addr); |
579c6ad9 | 10036 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10037 | |
f6ac5f3d | 10038 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10039 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10040 | |
f6ac5f3d | 10041 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10042 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10043 | ||
6d820c5c DJ |
10044 | putpkt (rs->buf); |
10045 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10046 | |
6d820c5c | 10047 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10048 | { |
d471ea57 AC |
10049 | case PACKET_ERROR: |
10050 | return -1; | |
10051 | case PACKET_OK: | |
10052 | return 0; | |
10053 | case PACKET_UNKNOWN: | |
10054 | break; | |
96baa820 JM |
10055 | } |
10056 | } | |
c906108c | 10057 | |
0000e5cc PA |
10058 | /* If this breakpoint has target-side commands but this stub doesn't |
10059 | support Z0 packets, throw error. */ | |
3cde5c42 | 10060 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10061 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10062 | Target doesn't support breakpoints that have target side commands.")); | |
10063 | ||
f6ac5f3d | 10064 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10065 | } |
10066 | ||
f6ac5f3d PA |
10067 | int |
10068 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10069 | struct bp_target_info *bp_tgt, | |
10070 | enum remove_bp_reason reason) | |
c906108c | 10071 | { |
8181d85f | 10072 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10073 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10074 | |
4082afcc | 10075 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10076 | { |
6d820c5c | 10077 | char *p = rs->buf; |
bba74b36 | 10078 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 10079 | |
28439a30 PA |
10080 | /* Make sure the remote is pointing at the right process, if |
10081 | necessary. */ | |
10082 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10083 | set_general_process (); | |
10084 | ||
96baa820 JM |
10085 | *(p++) = 'z'; |
10086 | *(p++) = '0'; | |
10087 | *(p++) = ','; | |
10088 | ||
8181d85f DJ |
10089 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10090 | p += hexnumstr (p, addr); | |
579c6ad9 | 10091 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10092 | |
6d820c5c DJ |
10093 | putpkt (rs->buf); |
10094 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10095 | |
6d820c5c | 10096 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10097 | } |
10098 | ||
f6ac5f3d | 10099 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10100 | } |
10101 | ||
f486487f | 10102 | static enum Z_packet_type |
d471ea57 AC |
10103 | watchpoint_to_Z_packet (int type) |
10104 | { | |
10105 | switch (type) | |
10106 | { | |
10107 | case hw_write: | |
bb858e6a | 10108 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10109 | break; |
10110 | case hw_read: | |
bb858e6a | 10111 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10112 | break; |
10113 | case hw_access: | |
bb858e6a | 10114 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10115 | break; |
10116 | default: | |
8e65ff28 | 10117 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10118 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10119 | } |
10120 | } | |
10121 | ||
f6ac5f3d PA |
10122 | int |
10123 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10124 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10125 | { |
d01949b6 | 10126 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10127 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10128 | char *p; |
d471ea57 | 10129 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10130 | |
4082afcc | 10131 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10132 | return 1; |
802188a7 | 10133 | |
28439a30 PA |
10134 | /* Make sure the remote is pointing at the right process, if |
10135 | necessary. */ | |
10136 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10137 | set_general_process (); | |
10138 | ||
bba74b36 | 10139 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 10140 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10141 | addr = remote_address_masked (addr); |
10142 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10143 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10144 | |
6d820c5c DJ |
10145 | putpkt (rs->buf); |
10146 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10147 | |
6d820c5c | 10148 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10149 | { |
10150 | case PACKET_ERROR: | |
d471ea57 | 10151 | return -1; |
85d721b8 PA |
10152 | case PACKET_UNKNOWN: |
10153 | return 1; | |
d471ea57 AC |
10154 | case PACKET_OK: |
10155 | return 0; | |
10156 | } | |
8e65ff28 | 10157 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10158 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10159 | } |
10160 | ||
f6ac5f3d PA |
10161 | int |
10162 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, | |
10163 | CORE_ADDR start, int length) | |
283002cf MR |
10164 | { |
10165 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10166 | ||
10167 | return diff < length; | |
10168 | } | |
10169 | ||
d471ea57 | 10170 | |
f6ac5f3d PA |
10171 | int |
10172 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10173 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10174 | { |
d01949b6 | 10175 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10176 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10177 | char *p; |
d471ea57 AC |
10178 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10179 | ||
4082afcc | 10180 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10181 | return -1; |
802188a7 | 10182 | |
28439a30 PA |
10183 | /* Make sure the remote is pointing at the right process, if |
10184 | necessary. */ | |
10185 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10186 | set_general_process (); | |
10187 | ||
bba74b36 | 10188 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 10189 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10190 | addr = remote_address_masked (addr); |
10191 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10192 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
10193 | putpkt (rs->buf); |
10194 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10195 | |
6d820c5c | 10196 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10197 | { |
10198 | case PACKET_ERROR: | |
10199 | case PACKET_UNKNOWN: | |
10200 | return -1; | |
10201 | case PACKET_OK: | |
10202 | return 0; | |
10203 | } | |
8e65ff28 | 10204 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10205 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10206 | } |
10207 | ||
3c3bea1c | 10208 | |
501eef12 | 10209 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 10210 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 10211 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 10212 | |
f6ac5f3d PA |
10213 | int |
10214 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10215 | { |
10216 | if (remote_hw_watchpoint_length_limit == 0) | |
10217 | return 0; | |
10218 | else if (remote_hw_watchpoint_length_limit < 0) | |
10219 | return 1; | |
10220 | else if (len <= remote_hw_watchpoint_length_limit) | |
10221 | return 1; | |
10222 | else | |
10223 | return 0; | |
10224 | } | |
10225 | ||
f6ac5f3d PA |
10226 | int |
10227 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10228 | { |
3c3bea1c GS |
10229 | if (type == bp_hardware_breakpoint) |
10230 | { | |
10231 | if (remote_hw_breakpoint_limit == 0) | |
10232 | return 0; | |
501eef12 AC |
10233 | else if (remote_hw_breakpoint_limit < 0) |
10234 | return 1; | |
3c3bea1c GS |
10235 | else if (cnt <= remote_hw_breakpoint_limit) |
10236 | return 1; | |
10237 | } | |
10238 | else | |
10239 | { | |
10240 | if (remote_hw_watchpoint_limit == 0) | |
10241 | return 0; | |
501eef12 AC |
10242 | else if (remote_hw_watchpoint_limit < 0) |
10243 | return 1; | |
3c3bea1c GS |
10244 | else if (ot) |
10245 | return -1; | |
10246 | else if (cnt <= remote_hw_watchpoint_limit) | |
10247 | return 1; | |
10248 | } | |
10249 | return -1; | |
10250 | } | |
10251 | ||
f7e6eed5 PA |
10252 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10253 | ||
f6ac5f3d PA |
10254 | int |
10255 | remote_target::stopped_by_sw_breakpoint () | |
f7e6eed5 | 10256 | { |
799a2abe | 10257 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10258 | |
799a2abe | 10259 | return (thread->priv != NULL |
7aabaf9d SM |
10260 | && (get_remote_thread_info (thread)->stop_reason |
10261 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10262 | } |
10263 | ||
10264 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10265 | remote. */ | |
10266 | ||
f6ac5f3d PA |
10267 | int |
10268 | remote_target::supports_stopped_by_sw_breakpoint () | |
f7e6eed5 | 10269 | { |
f7e6eed5 PA |
10270 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10271 | } | |
10272 | ||
10273 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10274 | ||
f6ac5f3d PA |
10275 | int |
10276 | remote_target::stopped_by_hw_breakpoint () | |
f7e6eed5 | 10277 | { |
799a2abe | 10278 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10279 | |
799a2abe | 10280 | return (thread->priv != NULL |
7aabaf9d SM |
10281 | && (get_remote_thread_info (thread)->stop_reason |
10282 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10283 | } |
10284 | ||
10285 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10286 | remote. */ | |
10287 | ||
f6ac5f3d PA |
10288 | int |
10289 | remote_target::supports_stopped_by_hw_breakpoint () | |
f7e6eed5 | 10290 | { |
f7e6eed5 PA |
10291 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10292 | } | |
10293 | ||
f6ac5f3d PA |
10294 | int |
10295 | remote_target::stopped_by_watchpoint () | |
3c3bea1c | 10296 | { |
799a2abe | 10297 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10298 | |
799a2abe | 10299 | return (thread->priv != NULL |
7aabaf9d SM |
10300 | && (get_remote_thread_info (thread)->stop_reason |
10301 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10302 | } |
10303 | ||
f6ac5f3d PA |
10304 | int |
10305 | remote_target::stopped_data_address (CORE_ADDR *addr_p) | |
3c3bea1c | 10306 | { |
799a2abe | 10307 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10308 | |
799a2abe | 10309 | if (thread->priv != NULL |
7aabaf9d SM |
10310 | && (get_remote_thread_info (thread)->stop_reason |
10311 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10312 | { |
7aabaf9d | 10313 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
799a2abe | 10314 | return 1; |
4aa7a7f5 JJ |
10315 | } |
10316 | ||
799a2abe | 10317 | return 0; |
3c3bea1c GS |
10318 | } |
10319 | ||
10320 | ||
f6ac5f3d PA |
10321 | int |
10322 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10323 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10324 | { |
0d5ed153 | 10325 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10326 | struct remote_state *rs; |
bba74b36 | 10327 | char *p, *endbuf; |
dd61ec5c | 10328 | char *message; |
3c3bea1c | 10329 | |
4082afcc | 10330 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10331 | return -1; |
2bc416ba | 10332 | |
28439a30 PA |
10333 | /* Make sure the remote is pointing at the right process, if |
10334 | necessary. */ | |
10335 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10336 | set_general_process (); | |
10337 | ||
4fff2411 JZ |
10338 | rs = get_remote_state (); |
10339 | p = rs->buf; | |
bba74b36 | 10340 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10341 | |
96baa820 JM |
10342 | *(p++) = 'Z'; |
10343 | *(p++) = '1'; | |
10344 | *(p++) = ','; | |
802188a7 | 10345 | |
0d5ed153 | 10346 | addr = remote_address_masked (addr); |
96baa820 | 10347 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10348 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10349 | |
f6ac5f3d | 10350 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10351 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10352 | |
f6ac5f3d | 10353 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10354 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10355 | ||
6d820c5c DJ |
10356 | putpkt (rs->buf); |
10357 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10358 | |
6d820c5c | 10359 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10360 | { |
10361 | case PACKET_ERROR: | |
dd61ec5c MW |
10362 | if (rs->buf[1] == '.') |
10363 | { | |
10364 | message = strchr (rs->buf + 2, '.'); | |
10365 | if (message) | |
0316657e | 10366 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10367 | } |
10368 | return -1; | |
d471ea57 AC |
10369 | case PACKET_UNKNOWN: |
10370 | return -1; | |
10371 | case PACKET_OK: | |
10372 | return 0; | |
10373 | } | |
8e65ff28 | 10374 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10375 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10376 | } |
10377 | ||
d471ea57 | 10378 | |
f6ac5f3d PA |
10379 | int |
10380 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10381 | struct bp_target_info *bp_tgt) | |
96baa820 | 10382 | { |
8181d85f | 10383 | CORE_ADDR addr; |
d01949b6 | 10384 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10385 | char *p = rs->buf; |
bba74b36 | 10386 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10387 | |
4082afcc | 10388 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10389 | return -1; |
802188a7 | 10390 | |
28439a30 PA |
10391 | /* Make sure the remote is pointing at the right process, if |
10392 | necessary. */ | |
10393 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10394 | set_general_process (); | |
10395 | ||
96baa820 JM |
10396 | *(p++) = 'z'; |
10397 | *(p++) = '1'; | |
10398 | *(p++) = ','; | |
802188a7 | 10399 | |
8181d85f | 10400 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10401 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10402 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10403 | |
6d820c5c DJ |
10404 | putpkt (rs->buf); |
10405 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10406 | |
6d820c5c | 10407 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10408 | { |
10409 | case PACKET_ERROR: | |
10410 | case PACKET_UNKNOWN: | |
10411 | return -1; | |
10412 | case PACKET_OK: | |
10413 | return 0; | |
10414 | } | |
8e65ff28 | 10415 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10416 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10417 | } |
96baa820 | 10418 | |
4a5e7a5b PA |
10419 | /* Verify memory using the "qCRC:" request. */ |
10420 | ||
f6ac5f3d PA |
10421 | int |
10422 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10423 | { |
10424 | struct remote_state *rs = get_remote_state (); | |
10425 | unsigned long host_crc, target_crc; | |
10426 | char *tmp; | |
10427 | ||
936d2992 PA |
10428 | /* It doesn't make sense to use qCRC if the remote target is |
10429 | connected but not running. */ | |
10430 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10431 | { | |
10432 | enum packet_result result; | |
28439a30 | 10433 | |
936d2992 PA |
10434 | /* Make sure the remote is pointing at the right process. */ |
10435 | set_general_process (); | |
4a5e7a5b | 10436 | |
936d2992 PA |
10437 | /* FIXME: assumes lma can fit into long. */ |
10438 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10439 | (long) lma, (long) size); | |
10440 | putpkt (rs->buf); | |
4a5e7a5b | 10441 | |
936d2992 PA |
10442 | /* Be clever; compute the host_crc before waiting for target |
10443 | reply. */ | |
10444 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10445 | ||
10446 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10447 | |
936d2992 PA |
10448 | result = packet_ok (rs->buf, |
10449 | &remote_protocol_packets[PACKET_qCRC]); | |
10450 | if (result == PACKET_ERROR) | |
10451 | return -1; | |
10452 | else if (result == PACKET_OK) | |
10453 | { | |
10454 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10455 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10456 | |
936d2992 PA |
10457 | return (host_crc == target_crc); |
10458 | } | |
10459 | } | |
4a5e7a5b | 10460 | |
f6ac5f3d | 10461 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10462 | } |
10463 | ||
c906108c SS |
10464 | /* compare-sections command |
10465 | ||
10466 | With no arguments, compares each loadable section in the exec bfd | |
10467 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10468 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10469 | |
c906108c | 10470 | static void |
ac88e2de | 10471 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10472 | { |
10473 | asection *s; | |
ce359b09 | 10474 | const char *sectname; |
c906108c SS |
10475 | bfd_size_type size; |
10476 | bfd_vma lma; | |
10477 | int matched = 0; | |
10478 | int mismatched = 0; | |
4a5e7a5b | 10479 | int res; |
95cf3b38 | 10480 | int read_only = 0; |
c906108c SS |
10481 | |
10482 | if (!exec_bfd) | |
8a3fe4f8 | 10483 | error (_("command cannot be used without an exec file")); |
c906108c | 10484 | |
28439a30 PA |
10485 | /* Make sure the remote is pointing at the right process. */ |
10486 | set_general_process (); | |
10487 | ||
95cf3b38 DT |
10488 | if (args != NULL && strcmp (args, "-r") == 0) |
10489 | { | |
10490 | read_only = 1; | |
10491 | args = NULL; | |
10492 | } | |
10493 | ||
c5aa993b | 10494 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10495 | { |
10496 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10497 | continue; /* Skip non-loadable section. */ |
c906108c | 10498 | |
95cf3b38 DT |
10499 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10500 | continue; /* Skip writeable sections */ | |
10501 | ||
2c500098 | 10502 | size = bfd_get_section_size (s); |
c906108c | 10503 | if (size == 0) |
0df8b418 | 10504 | continue; /* Skip zero-length section. */ |
c906108c | 10505 | |
ce359b09 | 10506 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10507 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10508 | continue; /* Not the section selected by user. */ |
c906108c | 10509 | |
0df8b418 | 10510 | matched = 1; /* Do this section. */ |
c906108c | 10511 | lma = s->lma; |
c906108c | 10512 | |
b80406ac TT |
10513 | gdb::byte_vector sectdata (size); |
10514 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10515 | |
b80406ac | 10516 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10517 | |
10518 | if (res == -1) | |
5af949e3 | 10519 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10520 | paddress (target_gdbarch (), lma), |
10521 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10522 | |
5af949e3 | 10523 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10524 | paddress (target_gdbarch (), lma), |
10525 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10526 | if (res) |
c906108c SS |
10527 | printf_filtered ("matched.\n"); |
10528 | else | |
c5aa993b JM |
10529 | { |
10530 | printf_filtered ("MIS-MATCHED!\n"); | |
10531 | mismatched++; | |
10532 | } | |
c906108c SS |
10533 | } |
10534 | if (mismatched > 0) | |
936d2992 | 10535 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10536 | the loaded file\n")); |
c906108c | 10537 | if (args && !matched) |
a3f17187 | 10538 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10539 | } |
10540 | ||
0e7f50da UW |
10541 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10542 | into remote target. The number of bytes written to the remote | |
10543 | target is returned, or -1 for error. */ | |
10544 | ||
9b409511 | 10545 | static enum target_xfer_status |
f6ac5f3d | 10546 | remote_write_qxfer (const char *object_name, |
0e7f50da | 10547 | const char *annex, const gdb_byte *writebuf, |
9b409511 | 10548 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10549 | struct packet_config *packet) |
10550 | { | |
10551 | int i, buf_len; | |
10552 | ULONGEST n; | |
0e7f50da UW |
10553 | struct remote_state *rs = get_remote_state (); |
10554 | int max_size = get_memory_write_packet_size (); | |
10555 | ||
7cc244de | 10556 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10557 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10558 | |
10559 | /* Insert header. */ | |
10560 | i = snprintf (rs->buf, max_size, | |
10561 | "qXfer:%s:write:%s:%s:", | |
10562 | object_name, annex ? annex : "", | |
10563 | phex_nz (offset, sizeof offset)); | |
10564 | max_size -= (i + 1); | |
10565 | ||
10566 | /* Escape as much data as fits into rs->buf. */ | |
10567 | buf_len = remote_escape_output | |
124e13d9 | 10568 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10569 | |
10570 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10571 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10572 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10573 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10574 | |
10575 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10576 | |
10577 | *xfered_len = n; | |
92ffd475 | 10578 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10579 | } |
10580 | ||
0876f84a DJ |
10581 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10582 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10583 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10584 | The number of bytes read may be less than LEN without indicating an | |
10585 | EOF. PACKET is checked and updated to indicate whether the remote | |
10586 | target supports this object. */ | |
10587 | ||
9b409511 | 10588 | static enum target_xfer_status |
f6ac5f3d | 10589 | remote_read_qxfer (const char *object_name, |
0876f84a DJ |
10590 | const char *annex, |
10591 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10592 | ULONGEST *xfered_len, |
0876f84a DJ |
10593 | struct packet_config *packet) |
10594 | { | |
0876f84a | 10595 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10596 | LONGEST i, n, packet_len; |
10597 | ||
7cc244de | 10598 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10599 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10600 | |
10601 | /* Check whether we've cached an end-of-object packet that matches | |
10602 | this request. */ | |
8e88304f | 10603 | if (rs->finished_object) |
0876f84a | 10604 | { |
8e88304f TT |
10605 | if (strcmp (object_name, rs->finished_object) == 0 |
10606 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10607 | && offset == rs->finished_offset) | |
9b409511 YQ |
10608 | return TARGET_XFER_EOF; |
10609 | ||
0876f84a DJ |
10610 | |
10611 | /* Otherwise, we're now reading something different. Discard | |
10612 | the cache. */ | |
8e88304f TT |
10613 | xfree (rs->finished_object); |
10614 | xfree (rs->finished_annex); | |
10615 | rs->finished_object = NULL; | |
10616 | rs->finished_annex = NULL; | |
0876f84a DJ |
10617 | } |
10618 | ||
10619 | /* Request only enough to fit in a single packet. The actual data | |
10620 | may not, since we don't know how much of it will need to be escaped; | |
10621 | the target is free to respond with slightly less data. We subtract | |
10622 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10623 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10624 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10625 | object_name, annex ? annex : "", | |
10626 | phex_nz (offset, sizeof offset), | |
10627 | phex_nz (n, sizeof n)); | |
10628 | i = putpkt (rs->buf); | |
10629 | if (i < 0) | |
2ed4b548 | 10630 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10631 | |
10632 | rs->buf[0] = '\0'; | |
10633 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10634 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10635 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10636 | |
10637 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10638 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10639 | ||
10640 | /* 'm' means there is (or at least might be) more data after this | |
10641 | batch. That does not make sense unless there's at least one byte | |
10642 | of data in this reply. */ | |
10643 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10644 | error (_("Remote qXfer reply contained no data.")); | |
10645 | ||
10646 | /* Got some data. */ | |
bc20a4af PA |
10647 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10648 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10649 | |
10650 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10651 | or possibly empty. If we have the final block of a non-empty |
10652 | object, record this fact to bypass a subsequent partial read. */ | |
10653 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10654 | { |
8e88304f TT |
10655 | rs->finished_object = xstrdup (object_name); |
10656 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10657 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10658 | } |
10659 | ||
9b409511 YQ |
10660 | if (i == 0) |
10661 | return TARGET_XFER_EOF; | |
10662 | else | |
10663 | { | |
10664 | *xfered_len = i; | |
10665 | return TARGET_XFER_OK; | |
10666 | } | |
0876f84a DJ |
10667 | } |
10668 | ||
f6ac5f3d PA |
10669 | enum target_xfer_status |
10670 | remote_target::xfer_partial (enum target_object object, | |
10671 | const char *annex, gdb_byte *readbuf, | |
10672 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10673 | ULONGEST *xfered_len) | |
c906108c | 10674 | { |
82f73884 | 10675 | struct remote_state *rs; |
c906108c | 10676 | int i; |
6d820c5c | 10677 | char *p2; |
1e3ff5ad | 10678 | char query_type; |
124e13d9 | 10679 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10680 | |
e6e4e701 | 10681 | set_remote_traceframe (); |
82f73884 PA |
10682 | set_general_thread (inferior_ptid); |
10683 | ||
10684 | rs = get_remote_state (); | |
10685 | ||
b2182ed2 | 10686 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10687 | if (object == TARGET_OBJECT_MEMORY) |
10688 | { | |
2d717e4f DJ |
10689 | /* If the remote target is connected but not running, we should |
10690 | pass this request down to a lower stratum (e.g. the executable | |
10691 | file). */ | |
10692 | if (!target_has_execution) | |
9b409511 | 10693 | return TARGET_XFER_EOF; |
2d717e4f | 10694 | |
21e3b9b9 | 10695 | if (writebuf != NULL) |
124e13d9 SM |
10696 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10697 | xfered_len); | |
21e3b9b9 | 10698 | else |
f6ac5f3d | 10699 | return remote_read_bytes (this, offset, readbuf, len, unit_size, |
124e13d9 | 10700 | xfered_len); |
21e3b9b9 DJ |
10701 | } |
10702 | ||
0df8b418 | 10703 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10704 | if (object == TARGET_OBJECT_SPU) |
10705 | { | |
10706 | if (readbuf) | |
f6ac5f3d | 10707 | return remote_read_qxfer ("spu", annex, readbuf, offset, len, |
9b409511 YQ |
10708 | xfered_len, &remote_protocol_packets |
10709 | [PACKET_qXfer_spu_read]); | |
0e7f50da | 10710 | else |
f6ac5f3d | 10711 | return remote_write_qxfer ("spu", annex, writebuf, offset, len, |
9b409511 YQ |
10712 | xfered_len, &remote_protocol_packets |
10713 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10714 | } |
10715 | ||
4aa995e1 PA |
10716 | /* Handle extra signal info using qxfer packets. */ |
10717 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10718 | { | |
10719 | if (readbuf) | |
f6ac5f3d | 10720 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 10721 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10722 | [PACKET_qXfer_siginfo_read]); |
10723 | else | |
f6ac5f3d | 10724 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 10725 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10726 | &remote_protocol_packets |
10727 | [PACKET_qXfer_siginfo_write]); | |
10728 | } | |
10729 | ||
0fb4aa4b PA |
10730 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10731 | { | |
10732 | if (readbuf) | |
f6ac5f3d | 10733 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 10734 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10735 | &remote_protocol_packets |
10736 | [PACKET_qXfer_statictrace_read]); | |
10737 | else | |
2ed4b548 | 10738 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10739 | } |
10740 | ||
a76d924d DJ |
10741 | /* Only handle flash writes. */ |
10742 | if (writebuf != NULL) | |
10743 | { | |
a76d924d DJ |
10744 | switch (object) |
10745 | { | |
10746 | case TARGET_OBJECT_FLASH: | |
f6ac5f3d | 10747 | return remote_flash_write (this, offset, len, xfered_len, |
9b409511 | 10748 | writebuf); |
a76d924d DJ |
10749 | |
10750 | default: | |
2ed4b548 | 10751 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10752 | } |
10753 | } | |
4b8a223f | 10754 | |
1e3ff5ad AC |
10755 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10756 | objects!!! Instead specify new query packets. */ | |
10757 | switch (object) | |
c906108c | 10758 | { |
1e3ff5ad AC |
10759 | case TARGET_OBJECT_AVR: |
10760 | query_type = 'R'; | |
10761 | break; | |
802188a7 RM |
10762 | |
10763 | case TARGET_OBJECT_AUXV: | |
0876f84a | 10764 | gdb_assert (annex == NULL); |
f6ac5f3d | 10765 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 10766 | xfered_len, |
0876f84a | 10767 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10768 | |
23181151 DJ |
10769 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10770 | return remote_read_qxfer | |
f6ac5f3d | 10771 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10772 | &remote_protocol_packets[PACKET_qXfer_features]); |
10773 | ||
cfa9d6d9 DJ |
10774 | case TARGET_OBJECT_LIBRARIES: |
10775 | return remote_read_qxfer | |
f6ac5f3d | 10776 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10777 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10778 | ||
2268b414 JK |
10779 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10780 | return remote_read_qxfer | |
f6ac5f3d | 10781 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10782 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10783 | ||
fd79ecee DJ |
10784 | case TARGET_OBJECT_MEMORY_MAP: |
10785 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10786 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 10787 | xfered_len, |
fd79ecee DJ |
10788 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10789 | ||
07e059b5 VP |
10790 | case TARGET_OBJECT_OSDATA: |
10791 | /* Should only get here if we're connected. */ | |
5d93a237 | 10792 | gdb_assert (rs->remote_desc); |
07e059b5 | 10793 | return remote_read_qxfer |
f6ac5f3d | 10794 | ("osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10795 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10796 | ||
dc146f7c VP |
10797 | case TARGET_OBJECT_THREADS: |
10798 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10799 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 10800 | xfered_len, |
dc146f7c VP |
10801 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10802 | ||
b3b9301e PA |
10803 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10804 | gdb_assert (annex == NULL); | |
10805 | return remote_read_qxfer | |
f6ac5f3d | 10806 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10807 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10808 | |
10809 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 10810 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 10811 | xfered_len, |
78d85199 | 10812 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10813 | |
10814 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 10815 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 10816 | xfered_len, |
169081d0 TG |
10817 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10818 | ||
9accd112 | 10819 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 10820 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 10821 | xfered_len, |
9accd112 MM |
10822 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10823 | ||
f4abbc16 | 10824 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 10825 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
10826 | len, xfered_len, |
10827 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10828 | ||
c78fa86a | 10829 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 10830 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
10831 | len, xfered_len, |
10832 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10833 | ||
1e3ff5ad | 10834 | default: |
2ed4b548 | 10835 | return TARGET_XFER_E_IO; |
c906108c SS |
10836 | } |
10837 | ||
0df8b418 | 10838 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10839 | large enough let the caller deal with it. */ |
ea9c271d | 10840 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10841 | return TARGET_XFER_E_IO; |
ea9c271d | 10842 | len = get_remote_packet_size (); |
1e3ff5ad | 10843 | |
23860348 | 10844 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10845 | if (!rs->remote_desc) |
8a3fe4f8 | 10846 | error (_("remote query is only available after target open")); |
c906108c | 10847 | |
1e3ff5ad | 10848 | gdb_assert (annex != NULL); |
4b8a223f | 10849 | gdb_assert (readbuf != NULL); |
c906108c | 10850 | |
6d820c5c | 10851 | p2 = rs->buf; |
c906108c SS |
10852 | *p2++ = 'q'; |
10853 | *p2++ = query_type; | |
10854 | ||
23860348 MS |
10855 | /* We used one buffer char for the remote protocol q command and |
10856 | another for the query type. As the remote protocol encapsulation | |
10857 | uses 4 chars plus one extra in case we are debugging | |
10858 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10859 | string. */ | |
c906108c | 10860 | i = 0; |
ea9c271d | 10861 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10862 | { |
1e3ff5ad AC |
10863 | /* Bad caller may have sent forbidden characters. */ |
10864 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10865 | *p2++ = annex[i]; | |
c906108c SS |
10866 | i++; |
10867 | } | |
1e3ff5ad AC |
10868 | *p2 = '\0'; |
10869 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10870 | |
6d820c5c | 10871 | i = putpkt (rs->buf); |
c5aa993b | 10872 | if (i < 0) |
2ed4b548 | 10873 | return TARGET_XFER_E_IO; |
c906108c | 10874 | |
6d820c5c DJ |
10875 | getpkt (&rs->buf, &rs->buf_size, 0); |
10876 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10877 | |
9b409511 | 10878 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 10879 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
10880 | } |
10881 | ||
09c98b44 DB |
10882 | /* Implementation of to_get_memory_xfer_limit. */ |
10883 | ||
f6ac5f3d PA |
10884 | ULONGEST |
10885 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
10886 | { |
10887 | return get_memory_write_packet_size (); | |
10888 | } | |
10889 | ||
f6ac5f3d PA |
10890 | int |
10891 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
10892 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10893 | CORE_ADDR *found_addrp) | |
08388c79 | 10894 | { |
f5656ead | 10895 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10896 | struct remote_state *rs = get_remote_state (); |
10897 | int max_size = get_memory_write_packet_size (); | |
10898 | struct packet_config *packet = | |
10899 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10900 | /* Number of packet bytes used to encode the pattern; |
10901 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10902 | int escaped_pattern_len; |
0df8b418 | 10903 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10904 | int used_pattern_len; |
10905 | int i; | |
10906 | int found; | |
10907 | ULONGEST found_addr; | |
10908 | ||
7cc244de PA |
10909 | /* Don't go to the target if we don't have to. This is done before |
10910 | checking packet_config_support to avoid the possibility that a | |
10911 | success for this edge case means the facility works in | |
10912 | general. */ | |
08388c79 DE |
10913 | if (pattern_len > search_space_len) |
10914 | return 0; | |
10915 | if (pattern_len == 0) | |
10916 | { | |
10917 | *found_addrp = start_addr; | |
10918 | return 1; | |
10919 | } | |
10920 | ||
10921 | /* If we already know the packet isn't supported, fall back to the simple | |
10922 | way of searching memory. */ | |
10923 | ||
4082afcc | 10924 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10925 | { |
10926 | /* Target doesn't provided special support, fall back and use the | |
10927 | standard support (copy memory and do the search here). */ | |
f6ac5f3d | 10928 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
10929 | pattern, pattern_len, found_addrp); |
10930 | } | |
10931 | ||
28439a30 PA |
10932 | /* Make sure the remote is pointing at the right process. */ |
10933 | set_general_process (); | |
10934 | ||
08388c79 DE |
10935 | /* Insert header. */ |
10936 | i = snprintf (rs->buf, max_size, | |
10937 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10938 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10939 | phex_nz (search_space_len, sizeof (search_space_len))); |
10940 | max_size -= (i + 1); | |
10941 | ||
10942 | /* Escape as much data as fits into rs->buf. */ | |
10943 | escaped_pattern_len = | |
124e13d9 | 10944 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10945 | &used_pattern_len, max_size); |
10946 | ||
10947 | /* Bail if the pattern is too large. */ | |
10948 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10949 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10950 | |
10951 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10952 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10953 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10954 | { | |
10955 | /* The request may not have worked because the command is not | |
10956 | supported. If so, fall back to the simple way. */ | |
7cc244de | 10957 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 10958 | { |
f6ac5f3d | 10959 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
10960 | pattern, pattern_len, found_addrp); |
10961 | } | |
10962 | return -1; | |
10963 | } | |
10964 | ||
10965 | if (rs->buf[0] == '0') | |
10966 | found = 0; | |
10967 | else if (rs->buf[0] == '1') | |
10968 | { | |
10969 | found = 1; | |
10970 | if (rs->buf[1] != ',') | |
10e0fa18 | 10971 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10972 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10973 | *found_addrp = found_addr; | |
10974 | } | |
10975 | else | |
10e0fa18 | 10976 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10977 | |
10978 | return found; | |
10979 | } | |
10980 | ||
f6ac5f3d PA |
10981 | void |
10982 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 10983 | { |
d01949b6 | 10984 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10985 | char *p = rs->buf; |
96baa820 | 10986 | |
5d93a237 | 10987 | if (!rs->remote_desc) |
8a3fe4f8 | 10988 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10989 | |
23860348 | 10990 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10991 | if (command == NULL) |
10992 | command = ""; | |
10993 | ||
23860348 | 10994 | /* The query prefix. */ |
2e9f7625 DJ |
10995 | strcpy (rs->buf, "qRcmd,"); |
10996 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10997 | |
3e43a32a MS |
10998 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10999 | > get_remote_packet_size ()) | |
8a3fe4f8 | 11000 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11001 | |
23860348 | 11002 | /* Encode the actual command. */ |
a30bf1f1 | 11003 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11004 | |
6d820c5c | 11005 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11006 | error (_("Communication problem with target.")); |
96baa820 JM |
11007 | |
11008 | /* get/display the response */ | |
11009 | while (1) | |
11010 | { | |
2e9f7625 DJ |
11011 | char *buf; |
11012 | ||
00bf0b85 | 11013 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11014 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11015 | rs->buf[0] = '\0'; |
5b37825d PW |
11016 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
11017 | { | |
11018 | /* Timeout. Continue to (try to) read responses. | |
11019 | This is better than stopping with an error, assuming the stub | |
11020 | is still executing the (long) monitor command. | |
11021 | If needed, the user can interrupt gdb using C-c, obtaining | |
11022 | an effect similar to stop on timeout. */ | |
11023 | continue; | |
11024 | } | |
2e9f7625 | 11025 | buf = rs->buf; |
96baa820 | 11026 | if (buf[0] == '\0') |
8a3fe4f8 | 11027 | error (_("Target does not support this command.")); |
96baa820 JM |
11028 | if (buf[0] == 'O' && buf[1] != 'K') |
11029 | { | |
23860348 | 11030 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11031 | continue; |
11032 | } | |
11033 | if (strcmp (buf, "OK") == 0) | |
11034 | break; | |
7be570e7 JM |
11035 | if (strlen (buf) == 3 && buf[0] == 'E' |
11036 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11037 | { | |
8a3fe4f8 | 11038 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11039 | } |
96baa820 JM |
11040 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11041 | { | |
11042 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11043 | |
96baa820 JM |
11044 | fputc_unfiltered (c, outbuf); |
11045 | } | |
11046 | break; | |
11047 | } | |
11048 | } | |
11049 | ||
f6ac5f3d PA |
11050 | std::vector<mem_region> |
11051 | remote_target::memory_map () | |
fd79ecee | 11052 | { |
a664f67e | 11053 | std::vector<mem_region> result; |
9018be22 | 11054 | gdb::optional<gdb::char_vector> text |
f6ac5f3d | 11055 | = target_read_stralloc (target_stack, TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11056 | |
11057 | if (text) | |
9018be22 | 11058 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11059 | |
11060 | return result; | |
11061 | } | |
11062 | ||
c906108c | 11063 | static void |
ac88e2de | 11064 | packet_command (const char *args, int from_tty) |
c906108c | 11065 | { |
d01949b6 | 11066 | struct remote_state *rs = get_remote_state (); |
c906108c | 11067 | |
5d93a237 | 11068 | if (!rs->remote_desc) |
8a3fe4f8 | 11069 | error (_("command can only be used with remote target")); |
c906108c | 11070 | |
c5aa993b | 11071 | if (!args) |
8a3fe4f8 | 11072 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11073 | |
11074 | puts_filtered ("sending: "); | |
11075 | print_packet (args); | |
11076 | puts_filtered ("\n"); | |
11077 | putpkt (args); | |
11078 | ||
6d820c5c | 11079 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 11080 | puts_filtered ("received: "); |
6d820c5c | 11081 | print_packet (rs->buf); |
c906108c SS |
11082 | puts_filtered ("\n"); |
11083 | } | |
11084 | ||
11085 | #if 0 | |
23860348 | 11086 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11087 | |
a14ed312 | 11088 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11089 | |
a14ed312 | 11090 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11091 | |
a14ed312 | 11092 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11093 | |
a14ed312 | 11094 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11095 | |
23860348 | 11096 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11097 | |
a14ed312 | 11098 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11099 | |
23860348 | 11100 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11101 | |
a14ed312 | 11102 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11103 | |
a14ed312 | 11104 | static void init_remote_threadtests (void); |
c906108c | 11105 | |
23860348 | 11106 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11107 | |
11108 | static void | |
0b39b52e | 11109 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11110 | { |
11111 | int sample_thread = SAMPLE_THREAD; | |
11112 | ||
a3f17187 | 11113 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11114 | set_general_thread (sample_thread); |
c906108c SS |
11115 | } |
11116 | ||
11117 | ||
11118 | static void | |
0b39b52e | 11119 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11120 | { |
11121 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 11122 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 11123 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 11124 | |
79d7f229 | 11125 | if (remote_thread_alive (ptid)) |
c906108c SS |
11126 | printf_filtered ("PASS: Thread alive test\n"); |
11127 | else | |
11128 | printf_filtered ("FAIL: Thread alive test\n"); | |
11129 | } | |
11130 | ||
23860348 | 11131 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11132 | |
11133 | void | |
fba45db2 | 11134 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11135 | { |
11136 | char hexid[20]; | |
11137 | ||
23860348 | 11138 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
11139 | hexid[16] = 0; |
11140 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11141 | } | |
11142 | ||
11143 | static void | |
0b39b52e | 11144 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11145 | { |
11146 | int startflag = 1; | |
11147 | threadref nextthread; | |
11148 | int done, result_count; | |
11149 | threadref threadlist[3]; | |
11150 | ||
11151 | printf_filtered ("Remote Threadlist test\n"); | |
11152 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11153 | &result_count, &threadlist[0])) | |
11154 | printf_filtered ("FAIL: threadlist test\n"); | |
11155 | else | |
11156 | { | |
11157 | threadref *scan = threadlist; | |
11158 | threadref *limit = scan + result_count; | |
11159 | ||
11160 | while (scan < limit) | |
11161 | output_threadid (" thread ", scan++); | |
11162 | } | |
11163 | } | |
11164 | ||
11165 | void | |
fba45db2 | 11166 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11167 | { |
11168 | output_threadid ("Threadid: ", &info->threadid); | |
11169 | printf_filtered ("Name: %s\n ", info->shortname); | |
11170 | printf_filtered ("State: %s\n", info->display); | |
11171 | printf_filtered ("other: %s\n\n", info->more_display); | |
11172 | } | |
11173 | ||
11174 | int | |
fba45db2 | 11175 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11176 | { |
11177 | int result; | |
11178 | int set; | |
11179 | struct gdb_ext_thread_info threadinfo; | |
11180 | ||
11181 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11182 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11183 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11184 | display_thread_info (&threadinfo); | |
11185 | return result; | |
11186 | } | |
11187 | ||
11188 | static void | |
0b39b52e | 11189 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11190 | { |
11191 | int athread = SAMPLE_THREAD; | |
11192 | threadref thread; | |
11193 | int set; | |
11194 | ||
11195 | int_to_threadref (&thread, athread); | |
11196 | printf_filtered ("Remote Threadinfo test\n"); | |
11197 | if (!get_and_display_threadinfo (&thread)) | |
11198 | printf_filtered ("FAIL cannot get thread info\n"); | |
11199 | } | |
11200 | ||
11201 | static int | |
fba45db2 | 11202 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11203 | { |
11204 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11205 | return get_and_display_threadinfo (ref); | |
11206 | } | |
11207 | ||
11208 | static void | |
0b39b52e | 11209 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11210 | { |
11211 | printf_filtered ("Remote Threadlist update test\n"); | |
11212 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11213 | } | |
11214 | ||
11215 | static void | |
11216 | init_remote_threadtests (void) | |
11217 | { | |
3e43a32a MS |
11218 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11219 | _("Fetch and print the remote list of " | |
11220 | "thread identifiers, one pkt only")); | |
c906108c | 11221 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 11222 | _("Fetch and display info about one thread")); |
c906108c | 11223 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 11224 | _("Test setting to a different thread")); |
c906108c | 11225 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 11226 | _("Iterate through updating all remote thread info")); |
c906108c | 11227 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 11228 | _(" Remote thread alive test ")); |
c906108c SS |
11229 | } |
11230 | ||
11231 | #endif /* 0 */ | |
11232 | ||
f3fb8c85 MS |
11233 | /* Convert a thread ID to a string. Returns the string in a static |
11234 | buffer. */ | |
11235 | ||
f6ac5f3d PA |
11236 | const char * |
11237 | remote_target::pid_to_str (ptid_t ptid) | |
f3fb8c85 | 11238 | { |
79d7f229 | 11239 | static char buf[64]; |
82f73884 | 11240 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11241 | |
7cee1e54 PA |
11242 | if (ptid_equal (ptid, null_ptid)) |
11243 | return normal_pid_to_str (ptid); | |
11244 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
11245 | { |
11246 | /* Printing an inferior target id. */ | |
11247 | ||
11248 | /* When multi-process extensions are off, there's no way in the | |
11249 | remote protocol to know the remote process id, if there's any | |
11250 | at all. There's one exception --- when we're connected with | |
11251 | target extended-remote, and we manually attached to a process | |
11252 | with "attach PID". We don't record anywhere a flag that | |
11253 | allows us to distinguish that case from the case of | |
11254 | connecting with extended-remote and the stub already being | |
11255 | attached to a process, and reporting yes to qAttached, hence | |
11256 | no smart special casing here. */ | |
11257 | if (!remote_multi_process_p (rs)) | |
11258 | { | |
11259 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11260 | return buf; | |
11261 | } | |
11262 | ||
11263 | return normal_pid_to_str (ptid); | |
82f73884 | 11264 | } |
ecd0ada5 | 11265 | else |
79d7f229 | 11266 | { |
ecd0ada5 PA |
11267 | if (ptid_equal (magic_null_ptid, ptid)) |
11268 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11269 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11270 | if (ptid_get_lwp (ptid) == 0) |
11271 | return normal_pid_to_str (ptid); | |
11272 | else | |
11273 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11274 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11275 | else |
11276 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11277 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11278 | return buf; |
11279 | } | |
f3fb8c85 MS |
11280 | } |
11281 | ||
38691318 KB |
11282 | /* Get the address of the thread local variable in OBJFILE which is |
11283 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11284 | ||
f6ac5f3d PA |
11285 | CORE_ADDR |
11286 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11287 | CORE_ADDR offset) | |
38691318 | 11288 | { |
4082afcc | 11289 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11290 | { |
11291 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11292 | char *p = rs->buf; |
82f73884 | 11293 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11294 | enum packet_result result; |
38691318 KB |
11295 | |
11296 | strcpy (p, "qGetTLSAddr:"); | |
11297 | p += strlen (p); | |
82f73884 | 11298 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11299 | *p++ = ','; |
11300 | p += hexnumstr (p, offset); | |
11301 | *p++ = ','; | |
11302 | p += hexnumstr (p, lm); | |
11303 | *p++ = '\0'; | |
11304 | ||
6d820c5c DJ |
11305 | putpkt (rs->buf); |
11306 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11307 | result = packet_ok (rs->buf, |
11308 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11309 | if (result == PACKET_OK) |
38691318 KB |
11310 | { |
11311 | ULONGEST result; | |
11312 | ||
6d820c5c | 11313 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11314 | return result; |
11315 | } | |
571dd617 | 11316 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11317 | throw_error (TLS_GENERIC_ERROR, |
11318 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11319 | else |
109c3e39 AC |
11320 | throw_error (TLS_GENERIC_ERROR, |
11321 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11322 | } |
11323 | else | |
109c3e39 AC |
11324 | throw_error (TLS_GENERIC_ERROR, |
11325 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11326 | /* Not reached. */ |
11327 | return 0; | |
11328 | } | |
11329 | ||
711e434b PM |
11330 | /* Provide thread local base, i.e. Thread Information Block address. |
11331 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11332 | ||
f6ac5f3d PA |
11333 | int |
11334 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
711e434b | 11335 | { |
4082afcc | 11336 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11337 | { |
11338 | struct remote_state *rs = get_remote_state (); | |
11339 | char *p = rs->buf; | |
11340 | char *endp = rs->buf + get_remote_packet_size (); | |
11341 | enum packet_result result; | |
11342 | ||
11343 | strcpy (p, "qGetTIBAddr:"); | |
11344 | p += strlen (p); | |
11345 | p = write_ptid (p, endp, ptid); | |
11346 | *p++ = '\0'; | |
11347 | ||
11348 | putpkt (rs->buf); | |
11349 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11350 | result = packet_ok (rs->buf, | |
11351 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11352 | if (result == PACKET_OK) | |
11353 | { | |
11354 | ULONGEST result; | |
11355 | ||
11356 | unpack_varlen_hex (rs->buf, &result); | |
11357 | if (addr) | |
11358 | *addr = (CORE_ADDR) result; | |
11359 | return 1; | |
11360 | } | |
11361 | else if (result == PACKET_UNKNOWN) | |
11362 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11363 | else | |
11364 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11365 | } | |
11366 | else | |
11367 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11368 | /* Not reached. */ | |
11369 | return 0; | |
11370 | } | |
11371 | ||
29709017 DJ |
11372 | /* Support for inferring a target description based on the current |
11373 | architecture and the size of a 'g' packet. While the 'g' packet | |
11374 | can have any size (since optional registers can be left off the | |
11375 | end), some sizes are easily recognizable given knowledge of the | |
11376 | approximate architecture. */ | |
11377 | ||
11378 | struct remote_g_packet_guess | |
11379 | { | |
11380 | int bytes; | |
11381 | const struct target_desc *tdesc; | |
11382 | }; | |
11383 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11384 | DEF_VEC_O(remote_g_packet_guess_s); | |
11385 | ||
11386 | struct remote_g_packet_data | |
11387 | { | |
11388 | VEC(remote_g_packet_guess_s) *guesses; | |
11389 | }; | |
11390 | ||
11391 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11392 | ||
11393 | static void * | |
11394 | remote_g_packet_data_init (struct obstack *obstack) | |
11395 | { | |
11396 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11397 | } | |
11398 | ||
11399 | void | |
11400 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11401 | const struct target_desc *tdesc) | |
11402 | { | |
11403 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11404 | = ((struct remote_g_packet_data *) |
11405 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11406 | struct remote_g_packet_guess new_guess, *guess; |
11407 | int ix; | |
11408 | ||
11409 | gdb_assert (tdesc != NULL); | |
11410 | ||
11411 | for (ix = 0; | |
11412 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11413 | ix++) | |
11414 | if (guess->bytes == bytes) | |
11415 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11416 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11417 | bytes); |
11418 | ||
11419 | new_guess.bytes = bytes; | |
11420 | new_guess.tdesc = tdesc; | |
11421 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11422 | } | |
11423 | ||
d962ef82 DJ |
11424 | /* Return 1 if remote_read_description would do anything on this target |
11425 | and architecture, 0 otherwise. */ | |
11426 | ||
11427 | static int | |
11428 | remote_read_description_p (struct target_ops *target) | |
11429 | { | |
11430 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11431 | = ((struct remote_g_packet_data *) |
11432 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11433 | |
11434 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11435 | return 1; | |
11436 | ||
11437 | return 0; | |
11438 | } | |
11439 | ||
f6ac5f3d PA |
11440 | const struct target_desc * |
11441 | remote_target::read_description () | |
29709017 DJ |
11442 | { |
11443 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11444 | = ((struct remote_g_packet_data *) |
11445 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11446 | |
d962ef82 DJ |
11447 | /* Do not try this during initial connection, when we do not know |
11448 | whether there is a running but stopped thread. */ | |
11449 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
f6ac5f3d | 11450 | return beneath->read_description (); |
d962ef82 | 11451 | |
29709017 DJ |
11452 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11453 | { | |
11454 | struct remote_g_packet_guess *guess; | |
11455 | int ix; | |
11456 | int bytes = send_g_packet (); | |
11457 | ||
11458 | for (ix = 0; | |
11459 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11460 | ix++) | |
11461 | if (guess->bytes == bytes) | |
11462 | return guess->tdesc; | |
11463 | ||
11464 | /* We discard the g packet. A minor optimization would be to | |
11465 | hold on to it, and fill the register cache once we have selected | |
11466 | an architecture, but it's too tricky to do safely. */ | |
11467 | } | |
11468 | ||
f6ac5f3d | 11469 | return beneath->read_description (); |
29709017 DJ |
11470 | } |
11471 | ||
a6b151f1 DJ |
11472 | /* Remote file transfer support. This is host-initiated I/O, not |
11473 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11474 | ||
11475 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11476 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11477 | decrease *LEFT. Otherwise raise an error. */ | |
11478 | ||
11479 | static void | |
a121b7c1 | 11480 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11481 | { |
11482 | int len = strlen (string); | |
11483 | ||
11484 | if (len > *left) | |
11485 | error (_("Packet too long for target.")); | |
11486 | ||
11487 | memcpy (*buffer, string, len); | |
11488 | *buffer += len; | |
11489 | *left -= len; | |
11490 | ||
11491 | /* NUL-terminate the buffer as a convenience, if there is | |
11492 | room. */ | |
11493 | if (*left) | |
11494 | **buffer = '\0'; | |
11495 | } | |
11496 | ||
11497 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11498 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11499 | decrease *LEFT. Otherwise raise an error. */ | |
11500 | ||
11501 | static void | |
11502 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11503 | int len) | |
11504 | { | |
11505 | if (2 * len > *left) | |
11506 | error (_("Packet too long for target.")); | |
11507 | ||
11508 | bin2hex (bytes, *buffer, len); | |
11509 | *buffer += 2 * len; | |
11510 | *left -= 2 * len; | |
11511 | ||
11512 | /* NUL-terminate the buffer as a convenience, if there is | |
11513 | room. */ | |
11514 | if (*left) | |
11515 | **buffer = '\0'; | |
11516 | } | |
11517 | ||
11518 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11519 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11520 | decrease *LEFT. Otherwise raise an error. */ | |
11521 | ||
11522 | static void | |
11523 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11524 | { | |
11525 | int len = hexnumlen (value); | |
11526 | ||
11527 | if (len > *left) | |
11528 | error (_("Packet too long for target.")); | |
11529 | ||
11530 | hexnumstr (*buffer, value); | |
11531 | *buffer += len; | |
11532 | *left -= len; | |
11533 | ||
11534 | /* NUL-terminate the buffer as a convenience, if there is | |
11535 | room. */ | |
11536 | if (*left) | |
11537 | **buffer = '\0'; | |
11538 | } | |
11539 | ||
11540 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11541 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11542 | was included, and *ATTACHMENT to point to the start of the annex | |
11543 | if any. The length of the packet isn't needed here; there may | |
11544 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11545 | ||
11546 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11547 | -1 is returned, the other variables may not be initialized. */ | |
11548 | ||
11549 | static int | |
11550 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11551 | int *remote_errno, char **attachment) | |
11552 | { | |
11553 | char *p, *p2; | |
11554 | ||
11555 | *remote_errno = 0; | |
11556 | *attachment = NULL; | |
11557 | ||
11558 | if (buffer[0] != 'F') | |
11559 | return -1; | |
11560 | ||
11561 | errno = 0; | |
11562 | *retcode = strtol (&buffer[1], &p, 16); | |
11563 | if (errno != 0 || p == &buffer[1]) | |
11564 | return -1; | |
11565 | ||
11566 | /* Check for ",errno". */ | |
11567 | if (*p == ',') | |
11568 | { | |
11569 | errno = 0; | |
11570 | *remote_errno = strtol (p + 1, &p2, 16); | |
11571 | if (errno != 0 || p + 1 == p2) | |
11572 | return -1; | |
11573 | p = p2; | |
11574 | } | |
11575 | ||
11576 | /* Check for ";attachment". If there is no attachment, the | |
11577 | packet should end here. */ | |
11578 | if (*p == ';') | |
11579 | { | |
11580 | *attachment = p + 1; | |
11581 | return 0; | |
11582 | } | |
11583 | else if (*p == '\0') | |
11584 | return 0; | |
11585 | else | |
11586 | return -1; | |
11587 | } | |
11588 | ||
11589 | /* Send a prepared I/O packet to the target and read its response. | |
11590 | The prepared packet is in the global RS->BUF before this function | |
11591 | is called, and the answer is there when we return. | |
11592 | ||
11593 | COMMAND_BYTES is the length of the request to send, which may include | |
11594 | binary data. WHICH_PACKET is the packet configuration to check | |
11595 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11596 | is set to the error number and -1 is returned. Otherwise the value | |
11597 | returned by the function is returned. | |
11598 | ||
11599 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11600 | attachment is expected; an error will be reported if there's a | |
11601 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11602 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11603 | attachment's length. */ | |
11604 | ||
11605 | static int | |
11606 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11607 | int *remote_errno, char **attachment, | |
11608 | int *attachment_len) | |
11609 | { | |
11610 | struct remote_state *rs = get_remote_state (); | |
11611 | int ret, bytes_read; | |
11612 | char *attachment_tmp; | |
11613 | ||
20db9c52 | 11614 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11615 | { |
11616 | *remote_errno = FILEIO_ENOSYS; | |
11617 | return -1; | |
11618 | } | |
11619 | ||
11620 | putpkt_binary (rs->buf, command_bytes); | |
11621 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11622 | ||
11623 | /* If it timed out, something is wrong. Don't try to parse the | |
11624 | buffer. */ | |
11625 | if (bytes_read < 0) | |
11626 | { | |
11627 | *remote_errno = FILEIO_EINVAL; | |
11628 | return -1; | |
11629 | } | |
11630 | ||
11631 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11632 | { | |
11633 | case PACKET_ERROR: | |
11634 | *remote_errno = FILEIO_EINVAL; | |
11635 | return -1; | |
11636 | case PACKET_UNKNOWN: | |
11637 | *remote_errno = FILEIO_ENOSYS; | |
11638 | return -1; | |
11639 | case PACKET_OK: | |
11640 | break; | |
11641 | } | |
11642 | ||
11643 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11644 | &attachment_tmp)) | |
11645 | { | |
11646 | *remote_errno = FILEIO_EINVAL; | |
11647 | return -1; | |
11648 | } | |
11649 | ||
11650 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11651 | if ((attachment_tmp == NULL && attachment != NULL) | |
11652 | || (attachment_tmp != NULL && attachment == NULL)) | |
11653 | { | |
11654 | *remote_errno = FILEIO_EINVAL; | |
11655 | return -1; | |
11656 | } | |
11657 | ||
11658 | /* If an attachment was found, it must point into the packet buffer; | |
11659 | work out how many bytes there were. */ | |
11660 | if (attachment_tmp != NULL) | |
11661 | { | |
11662 | *attachment = attachment_tmp; | |
11663 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11664 | } | |
11665 | ||
11666 | return ret; | |
11667 | } | |
11668 | ||
80152258 PA |
11669 | /* Invalidate the readahead cache. */ |
11670 | ||
11671 | static void | |
11672 | readahead_cache_invalidate (void) | |
11673 | { | |
11674 | struct remote_state *rs = get_remote_state (); | |
11675 | ||
11676 | rs->readahead_cache.fd = -1; | |
11677 | } | |
11678 | ||
11679 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
11680 | ||
11681 | static void | |
11682 | readahead_cache_invalidate_fd (int fd) | |
11683 | { | |
11684 | struct remote_state *rs = get_remote_state (); | |
11685 | ||
11686 | if (rs->readahead_cache.fd == fd) | |
11687 | rs->readahead_cache.fd = -1; | |
11688 | } | |
11689 | ||
15a201c8 GB |
11690 | /* Set the filesystem remote_hostio functions that take FILENAME |
11691 | arguments will use. Return 0 on success, or -1 if an error | |
11692 | occurs (and set *REMOTE_ERRNO). */ | |
11693 | ||
11694 | static int | |
11695 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11696 | { | |
11697 | struct remote_state *rs = get_remote_state (); | |
11698 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11699 | char *p = rs->buf; | |
11700 | int left = get_remote_packet_size () - 1; | |
11701 | char arg[9]; | |
11702 | int ret; | |
11703 | ||
11704 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11705 | return 0; | |
11706 | ||
11707 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11708 | return 0; | |
11709 | ||
11710 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11711 | ||
11712 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11713 | remote_buffer_add_string (&p, &left, arg); | |
11714 | ||
11715 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11716 | remote_errno, NULL, NULL); | |
11717 | ||
11718 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11719 | return 0; | |
11720 | ||
11721 | if (ret == 0) | |
11722 | rs->fs_pid = required_pid; | |
11723 | ||
11724 | return ret; | |
11725 | } | |
11726 | ||
12e2a5fd | 11727 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11728 | |
11729 | static int | |
cd897586 | 11730 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11731 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11732 | int flags, int mode, int warn_if_slow, |
11733 | int *remote_errno) | |
a6b151f1 DJ |
11734 | { |
11735 | struct remote_state *rs = get_remote_state (); | |
11736 | char *p = rs->buf; | |
11737 | int left = get_remote_packet_size () - 1; | |
11738 | ||
4313b8c0 GB |
11739 | if (warn_if_slow) |
11740 | { | |
11741 | static int warning_issued = 0; | |
11742 | ||
11743 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11744 | filename); | |
11745 | ||
11746 | if (!warning_issued) | |
11747 | { | |
11748 | warning (_("File transfers from remote targets can be slow." | |
11749 | " Use \"set sysroot\" to access files locally" | |
11750 | " instead.")); | |
11751 | warning_issued = 1; | |
11752 | } | |
11753 | } | |
11754 | ||
15a201c8 GB |
11755 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11756 | return -1; | |
11757 | ||
a6b151f1 DJ |
11758 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11759 | ||
11760 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11761 | strlen (filename)); | |
11762 | remote_buffer_add_string (&p, &left, ","); | |
11763 | ||
11764 | remote_buffer_add_int (&p, &left, flags); | |
11765 | remote_buffer_add_string (&p, &left, ","); | |
11766 | ||
11767 | remote_buffer_add_int (&p, &left, mode); | |
11768 | ||
11769 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11770 | remote_errno, NULL, NULL); | |
11771 | } | |
11772 | ||
f6ac5f3d PA |
11773 | int |
11774 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
11775 | int flags, int mode, int warn_if_slow, | |
11776 | int *remote_errno) | |
11777 | { | |
11778 | return remote_hostio_open (this, inf, filename, flags, mode, warn_if_slow, | |
11779 | remote_errno); | |
11780 | } | |
11781 | ||
12e2a5fd | 11782 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11783 | |
11784 | static int | |
0d866f62 TT |
11785 | remote_hostio_pwrite (struct target_ops *self, |
11786 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11787 | ULONGEST offset, int *remote_errno) |
11788 | { | |
11789 | struct remote_state *rs = get_remote_state (); | |
11790 | char *p = rs->buf; | |
11791 | int left = get_remote_packet_size (); | |
11792 | int out_len; | |
11793 | ||
80152258 PA |
11794 | readahead_cache_invalidate_fd (fd); |
11795 | ||
a6b151f1 DJ |
11796 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11797 | ||
11798 | remote_buffer_add_int (&p, &left, fd); | |
11799 | remote_buffer_add_string (&p, &left, ","); | |
11800 | ||
11801 | remote_buffer_add_int (&p, &left, offset); | |
11802 | remote_buffer_add_string (&p, &left, ","); | |
11803 | ||
124e13d9 | 11804 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11805 | get_remote_packet_size () - (p - rs->buf)); |
11806 | ||
11807 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11808 | remote_errno, NULL, NULL); | |
11809 | } | |
11810 | ||
f6ac5f3d PA |
11811 | int |
11812 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11813 | ULONGEST offset, int *remote_errno) | |
11814 | { | |
11815 | return remote_hostio_pwrite (this, fd, write_buf, len, offset, remote_errno); | |
11816 | } | |
11817 | ||
80152258 PA |
11818 | /* Helper for the implementation of to_fileio_pread. Read the file |
11819 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11820 | |
11821 | static int | |
80152258 PA |
11822 | remote_hostio_pread_vFile (struct target_ops *self, |
11823 | int fd, gdb_byte *read_buf, int len, | |
11824 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11825 | { |
11826 | struct remote_state *rs = get_remote_state (); | |
11827 | char *p = rs->buf; | |
11828 | char *attachment; | |
11829 | int left = get_remote_packet_size (); | |
11830 | int ret, attachment_len; | |
11831 | int read_len; | |
11832 | ||
11833 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11834 | ||
11835 | remote_buffer_add_int (&p, &left, fd); | |
11836 | remote_buffer_add_string (&p, &left, ","); | |
11837 | ||
11838 | remote_buffer_add_int (&p, &left, len); | |
11839 | remote_buffer_add_string (&p, &left, ","); | |
11840 | ||
11841 | remote_buffer_add_int (&p, &left, offset); | |
11842 | ||
11843 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11844 | remote_errno, &attachment, | |
11845 | &attachment_len); | |
11846 | ||
11847 | if (ret < 0) | |
11848 | return ret; | |
11849 | ||
bc20a4af | 11850 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11851 | read_buf, len); |
11852 | if (read_len != ret) | |
11853 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11854 | ||
11855 | return ret; | |
11856 | } | |
11857 | ||
80152258 PA |
11858 | /* Serve pread from the readahead cache. Returns number of bytes |
11859 | read, or 0 if the request can't be served from the cache. */ | |
11860 | ||
11861 | static int | |
11862 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11863 | int fd, gdb_byte *read_buf, size_t len, | |
11864 | ULONGEST offset) | |
11865 | { | |
11866 | struct readahead_cache *cache = &rs->readahead_cache; | |
11867 | ||
11868 | if (cache->fd == fd | |
11869 | && cache->offset <= offset | |
11870 | && offset < cache->offset + cache->bufsize) | |
11871 | { | |
11872 | ULONGEST max = cache->offset + cache->bufsize; | |
11873 | ||
11874 | if (offset + len > max) | |
11875 | len = max - offset; | |
11876 | ||
11877 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11878 | return len; | |
11879 | } | |
11880 | ||
11881 | return 0; | |
11882 | } | |
11883 | ||
11884 | /* Implementation of to_fileio_pread. */ | |
11885 | ||
11886 | static int | |
11887 | remote_hostio_pread (struct target_ops *self, | |
11888 | int fd, gdb_byte *read_buf, int len, | |
11889 | ULONGEST offset, int *remote_errno) | |
11890 | { | |
11891 | int ret; | |
11892 | struct remote_state *rs = get_remote_state (); | |
11893 | struct readahead_cache *cache = &rs->readahead_cache; | |
11894 | ||
11895 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11896 | if (ret > 0) | |
11897 | { | |
11898 | cache->hit_count++; | |
11899 | ||
11900 | if (remote_debug) | |
11901 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11902 | pulongest (cache->hit_count)); | |
11903 | return ret; | |
11904 | } | |
11905 | ||
11906 | cache->miss_count++; | |
11907 | if (remote_debug) | |
11908 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11909 | pulongest (cache->miss_count)); | |
11910 | ||
11911 | cache->fd = fd; | |
11912 | cache->offset = offset; | |
11913 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11914 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11915 | |
11916 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11917 | cache->offset, remote_errno); | |
11918 | if (ret <= 0) | |
11919 | { | |
11920 | readahead_cache_invalidate_fd (fd); | |
11921 | return ret; | |
11922 | } | |
11923 | ||
11924 | cache->bufsize = ret; | |
11925 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11926 | } | |
11927 | ||
f6ac5f3d PA |
11928 | int |
11929 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
11930 | ULONGEST offset, int *remote_errno) | |
11931 | { | |
11932 | return remote_hostio_pread (this, fd, read_buf, len, offset, remote_errno); | |
11933 | } | |
11934 | ||
12e2a5fd | 11935 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11936 | |
11937 | static int | |
df39ea25 | 11938 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11939 | { |
11940 | struct remote_state *rs = get_remote_state (); | |
11941 | char *p = rs->buf; | |
11942 | int left = get_remote_packet_size () - 1; | |
11943 | ||
80152258 PA |
11944 | readahead_cache_invalidate_fd (fd); |
11945 | ||
a6b151f1 DJ |
11946 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11947 | ||
11948 | remote_buffer_add_int (&p, &left, fd); | |
11949 | ||
11950 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11951 | remote_errno, NULL, NULL); | |
11952 | } | |
11953 | ||
f6ac5f3d PA |
11954 | int |
11955 | remote_target::fileio_close (int fd, int *remote_errno) | |
11956 | { | |
11957 | return remote_hostio_close (this, fd, remote_errno); | |
11958 | } | |
11959 | ||
12e2a5fd | 11960 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11961 | |
11962 | static int | |
dbbca37d | 11963 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11964 | struct inferior *inf, const char *filename, |
11965 | int *remote_errno) | |
a6b151f1 DJ |
11966 | { |
11967 | struct remote_state *rs = get_remote_state (); | |
11968 | char *p = rs->buf; | |
11969 | int left = get_remote_packet_size () - 1; | |
11970 | ||
15a201c8 GB |
11971 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11972 | return -1; | |
11973 | ||
a6b151f1 DJ |
11974 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11975 | ||
11976 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11977 | strlen (filename)); | |
11978 | ||
11979 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11980 | remote_errno, NULL, NULL); | |
11981 | } | |
11982 | ||
f6ac5f3d PA |
11983 | int |
11984 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
11985 | int *remote_errno) | |
11986 | { | |
11987 | return remote_hostio_unlink (this, inf, filename, remote_errno); | |
11988 | } | |
11989 | ||
12e2a5fd | 11990 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 11991 | |
f6ac5f3d PA |
11992 | gdb::optional<std::string> |
11993 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
11994 | int *remote_errno) | |
b9e7b9c3 UW |
11995 | { |
11996 | struct remote_state *rs = get_remote_state (); | |
11997 | char *p = rs->buf; | |
11998 | char *attachment; | |
11999 | int left = get_remote_packet_size (); | |
12000 | int len, attachment_len; | |
12001 | int read_len; | |
b9e7b9c3 | 12002 | |
15a201c8 | 12003 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12004 | return {}; |
15a201c8 | 12005 | |
b9e7b9c3 UW |
12006 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12007 | ||
12008 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12009 | strlen (filename)); | |
12010 | ||
12011 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
12012 | remote_errno, &attachment, | |
12013 | &attachment_len); | |
12014 | ||
12015 | if (len < 0) | |
e0d3522b | 12016 | return {}; |
b9e7b9c3 | 12017 | |
e0d3522b | 12018 | std::string ret (len, '\0'); |
b9e7b9c3 | 12019 | |
bc20a4af | 12020 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12021 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12022 | if (read_len != len) |
12023 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12024 | ||
b9e7b9c3 UW |
12025 | return ret; |
12026 | } | |
12027 | ||
12e2a5fd | 12028 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12029 | |
f6ac5f3d PA |
12030 | int |
12031 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12032 | { |
12033 | struct remote_state *rs = get_remote_state (); | |
12034 | char *p = rs->buf; | |
12035 | int left = get_remote_packet_size (); | |
12036 | int attachment_len, ret; | |
12037 | char *attachment; | |
12038 | struct fio_stat fst; | |
12039 | int read_len; | |
12040 | ||
464b0089 GB |
12041 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12042 | ||
12043 | remote_buffer_add_int (&p, &left, fd); | |
12044 | ||
12045 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
12046 | remote_errno, &attachment, | |
12047 | &attachment_len); | |
12048 | if (ret < 0) | |
0a93529c | 12049 | { |
464b0089 GB |
12050 | if (*remote_errno != FILEIO_ENOSYS) |
12051 | return ret; | |
12052 | ||
0a93529c GB |
12053 | /* Strictly we should return -1, ENOSYS here, but when |
12054 | "set sysroot remote:" was implemented in August 2008 | |
12055 | BFD's need for a stat function was sidestepped with | |
12056 | this hack. This was not remedied until March 2015 | |
12057 | so we retain the previous behavior to avoid breaking | |
12058 | compatibility. | |
12059 | ||
12060 | Note that the memset is a March 2015 addition; older | |
12061 | GDBs set st_size *and nothing else* so the structure | |
12062 | would have garbage in all other fields. This might | |
12063 | break something but retaining the previous behavior | |
12064 | here would be just too wrong. */ | |
12065 | ||
12066 | memset (st, 0, sizeof (struct stat)); | |
12067 | st->st_size = INT_MAX; | |
12068 | return 0; | |
12069 | } | |
12070 | ||
0a93529c GB |
12071 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12072 | (gdb_byte *) &fst, sizeof (fst)); | |
12073 | ||
12074 | if (read_len != ret) | |
12075 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12076 | ||
12077 | if (read_len != sizeof (fst)) | |
12078 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12079 | read_len, (int) sizeof (fst)); | |
12080 | ||
12081 | remote_fileio_to_host_stat (&fst, st); | |
12082 | ||
12083 | return 0; | |
12084 | } | |
12085 | ||
12e2a5fd | 12086 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12087 | |
f6ac5f3d PA |
12088 | int |
12089 | remote_target::filesystem_is_local () | |
e3dd7556 GB |
12090 | { |
12091 | /* Valgrind GDB presents itself as a remote target but works | |
12092 | on the local filesystem: it does not implement remote get | |
12093 | and users are not expected to set a sysroot. To handle | |
12094 | this case we treat the remote filesystem as local if the | |
12095 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12096 | does not support vFile:open. */ | |
a3be80c3 | 12097 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12098 | { |
12099 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12100 | ||
12101 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12102 | { | |
12103 | int fd, remote_errno; | |
12104 | ||
12105 | /* Try opening a file to probe support. The supplied | |
12106 | filename is irrelevant, we only care about whether | |
12107 | the stub recognizes the packet or not. */ | |
f6ac5f3d | 12108 | fd = remote_hostio_open (this, NULL, "just probing", |
4313b8c0 | 12109 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12110 | &remote_errno); |
12111 | ||
12112 | if (fd >= 0) | |
f6ac5f3d | 12113 | remote_hostio_close (this, fd, &remote_errno); |
e3dd7556 GB |
12114 | |
12115 | ps = packet_support (PACKET_vFile_open); | |
12116 | } | |
12117 | ||
12118 | if (ps == PACKET_DISABLE) | |
12119 | { | |
12120 | static int warning_issued = 0; | |
12121 | ||
12122 | if (!warning_issued) | |
12123 | { | |
12124 | warning (_("remote target does not support file" | |
12125 | " transfer, attempting to access files" | |
12126 | " from local filesystem.")); | |
12127 | warning_issued = 1; | |
12128 | } | |
12129 | ||
12130 | return 1; | |
12131 | } | |
12132 | } | |
12133 | ||
12134 | return 0; | |
12135 | } | |
12136 | ||
a6b151f1 DJ |
12137 | static int |
12138 | remote_fileio_errno_to_host (int errnum) | |
12139 | { | |
12140 | switch (errnum) | |
12141 | { | |
12142 | case FILEIO_EPERM: | |
12143 | return EPERM; | |
12144 | case FILEIO_ENOENT: | |
12145 | return ENOENT; | |
12146 | case FILEIO_EINTR: | |
12147 | return EINTR; | |
12148 | case FILEIO_EIO: | |
12149 | return EIO; | |
12150 | case FILEIO_EBADF: | |
12151 | return EBADF; | |
12152 | case FILEIO_EACCES: | |
12153 | return EACCES; | |
12154 | case FILEIO_EFAULT: | |
12155 | return EFAULT; | |
12156 | case FILEIO_EBUSY: | |
12157 | return EBUSY; | |
12158 | case FILEIO_EEXIST: | |
12159 | return EEXIST; | |
12160 | case FILEIO_ENODEV: | |
12161 | return ENODEV; | |
12162 | case FILEIO_ENOTDIR: | |
12163 | return ENOTDIR; | |
12164 | case FILEIO_EISDIR: | |
12165 | return EISDIR; | |
12166 | case FILEIO_EINVAL: | |
12167 | return EINVAL; | |
12168 | case FILEIO_ENFILE: | |
12169 | return ENFILE; | |
12170 | case FILEIO_EMFILE: | |
12171 | return EMFILE; | |
12172 | case FILEIO_EFBIG: | |
12173 | return EFBIG; | |
12174 | case FILEIO_ENOSPC: | |
12175 | return ENOSPC; | |
12176 | case FILEIO_ESPIPE: | |
12177 | return ESPIPE; | |
12178 | case FILEIO_EROFS: | |
12179 | return EROFS; | |
12180 | case FILEIO_ENOSYS: | |
12181 | return ENOSYS; | |
12182 | case FILEIO_ENAMETOOLONG: | |
12183 | return ENAMETOOLONG; | |
12184 | } | |
12185 | return -1; | |
12186 | } | |
12187 | ||
12188 | static char * | |
12189 | remote_hostio_error (int errnum) | |
12190 | { | |
12191 | int host_error = remote_fileio_errno_to_host (errnum); | |
12192 | ||
12193 | if (host_error == -1) | |
12194 | error (_("Unknown remote I/O error %d"), errnum); | |
12195 | else | |
12196 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12197 | } | |
12198 | ||
a6b151f1 DJ |
12199 | static void |
12200 | remote_hostio_close_cleanup (void *opaque) | |
12201 | { | |
12202 | int fd = *(int *) opaque; | |
12203 | int remote_errno; | |
12204 | ||
df39ea25 | 12205 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
12206 | } |
12207 | ||
12208 | void | |
12209 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
12210 | { | |
12211 | struct cleanup *back_to, *close_cleanup; | |
12212 | int retcode, fd, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
12213 | gdb_byte *buffer; |
12214 | int bytes_in_buffer; | |
12215 | int saw_eof; | |
12216 | ULONGEST offset; | |
5d93a237 | 12217 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12218 | |
5d93a237 | 12219 | if (!rs->remote_desc) |
a6b151f1 DJ |
12220 | error (_("command can only be used with remote target")); |
12221 | ||
d419f42d | 12222 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12223 | if (file == NULL) |
12224 | perror_with_name (local_file); | |
a6b151f1 | 12225 | |
07c138c8 | 12226 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 12227 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 12228 | | FILEIO_O_TRUNC), |
4313b8c0 | 12229 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
12230 | if (fd == -1) |
12231 | remote_hostio_error (remote_errno); | |
12232 | ||
12233 | /* Send up to this many bytes at once. They won't all fit in the | |
12234 | remote packet limit, so we'll transfer slightly fewer. */ | |
12235 | io_size = get_remote_packet_size (); | |
224c3ddb | 12236 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12237 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
12238 | |
12239 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
12240 | ||
12241 | bytes_in_buffer = 0; | |
12242 | saw_eof = 0; | |
12243 | offset = 0; | |
12244 | while (bytes_in_buffer || !saw_eof) | |
12245 | { | |
12246 | if (!saw_eof) | |
12247 | { | |
3e43a32a MS |
12248 | bytes = fread (buffer + bytes_in_buffer, 1, |
12249 | io_size - bytes_in_buffer, | |
d419f42d | 12250 | file.get ()); |
a6b151f1 DJ |
12251 | if (bytes == 0) |
12252 | { | |
d419f42d | 12253 | if (ferror (file.get ())) |
a6b151f1 DJ |
12254 | error (_("Error reading %s."), local_file); |
12255 | else | |
12256 | { | |
12257 | /* EOF. Unless there is something still in the | |
12258 | buffer from the last iteration, we are done. */ | |
12259 | saw_eof = 1; | |
12260 | if (bytes_in_buffer == 0) | |
12261 | break; | |
12262 | } | |
12263 | } | |
12264 | } | |
12265 | else | |
12266 | bytes = 0; | |
12267 | ||
12268 | bytes += bytes_in_buffer; | |
12269 | bytes_in_buffer = 0; | |
12270 | ||
0d866f62 TT |
12271 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
12272 | fd, buffer, bytes, | |
3e43a32a | 12273 | offset, &remote_errno); |
a6b151f1 DJ |
12274 | |
12275 | if (retcode < 0) | |
12276 | remote_hostio_error (remote_errno); | |
12277 | else if (retcode == 0) | |
12278 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12279 | else if (retcode < bytes) | |
12280 | { | |
12281 | /* Short write. Save the rest of the read data for the next | |
12282 | write. */ | |
12283 | bytes_in_buffer = bytes - retcode; | |
12284 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
12285 | } | |
12286 | ||
12287 | offset += retcode; | |
12288 | } | |
12289 | ||
12290 | discard_cleanups (close_cleanup); | |
df39ea25 | 12291 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12292 | remote_hostio_error (remote_errno); |
12293 | ||
12294 | if (from_tty) | |
12295 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
12296 | do_cleanups (back_to); | |
12297 | } | |
12298 | ||
12299 | void | |
12300 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
12301 | { | |
12302 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 12303 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12304 | gdb_byte *buffer; |
12305 | ULONGEST offset; | |
5d93a237 | 12306 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12307 | |
5d93a237 | 12308 | if (!rs->remote_desc) |
a6b151f1 DJ |
12309 | error (_("command can only be used with remote target")); |
12310 | ||
07c138c8 | 12311 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
12312 | remote_file, FILEIO_O_RDONLY, 0, 0, |
12313 | &remote_errno); | |
a6b151f1 DJ |
12314 | if (fd == -1) |
12315 | remote_hostio_error (remote_errno); | |
12316 | ||
d419f42d | 12317 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12318 | if (file == NULL) |
12319 | perror_with_name (local_file); | |
a6b151f1 DJ |
12320 | |
12321 | /* Send up to this many bytes at once. They won't all fit in the | |
12322 | remote packet limit, so we'll transfer slightly fewer. */ | |
12323 | io_size = get_remote_packet_size (); | |
224c3ddb | 12324 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12325 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
12326 | |
12327 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
12328 | ||
12329 | offset = 0; | |
12330 | while (1) | |
12331 | { | |
a3be983c TT |
12332 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
12333 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
12334 | if (bytes == 0) |
12335 | /* Success, but no bytes, means end-of-file. */ | |
12336 | break; | |
12337 | if (bytes == -1) | |
12338 | remote_hostio_error (remote_errno); | |
12339 | ||
12340 | offset += bytes; | |
12341 | ||
d419f42d | 12342 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12343 | if (bytes == 0) |
12344 | perror_with_name (local_file); | |
12345 | } | |
12346 | ||
12347 | discard_cleanups (close_cleanup); | |
df39ea25 | 12348 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12349 | remote_hostio_error (remote_errno); |
12350 | ||
12351 | if (from_tty) | |
12352 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12353 | do_cleanups (back_to); | |
12354 | } | |
12355 | ||
12356 | void | |
12357 | remote_file_delete (const char *remote_file, int from_tty) | |
12358 | { | |
12359 | int retcode, remote_errno; | |
5d93a237 | 12360 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12361 | |
5d93a237 | 12362 | if (!rs->remote_desc) |
a6b151f1 DJ |
12363 | error (_("command can only be used with remote target")); |
12364 | ||
dbbca37d | 12365 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12366 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12367 | if (retcode == -1) |
12368 | remote_hostio_error (remote_errno); | |
12369 | ||
12370 | if (from_tty) | |
12371 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12372 | } | |
12373 | ||
12374 | static void | |
ac88e2de | 12375 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12376 | { |
d1a41061 PP |
12377 | if (args == NULL) |
12378 | error_no_arg (_("file to put")); | |
12379 | ||
773a1edc | 12380 | gdb_argv argv (args); |
a6b151f1 DJ |
12381 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12382 | error (_("Invalid parameters to remote put")); | |
12383 | ||
12384 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12385 | } |
12386 | ||
12387 | static void | |
ac88e2de | 12388 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12389 | { |
d1a41061 PP |
12390 | if (args == NULL) |
12391 | error_no_arg (_("file to get")); | |
12392 | ||
773a1edc | 12393 | gdb_argv argv (args); |
a6b151f1 DJ |
12394 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12395 | error (_("Invalid parameters to remote get")); | |
12396 | ||
12397 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12398 | } |
12399 | ||
12400 | static void | |
ac88e2de | 12401 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12402 | { |
d1a41061 PP |
12403 | if (args == NULL) |
12404 | error_no_arg (_("file to delete")); | |
12405 | ||
773a1edc | 12406 | gdb_argv argv (args); |
a6b151f1 DJ |
12407 | if (argv[0] == NULL || argv[1] != NULL) |
12408 | error (_("Invalid parameters to remote delete")); | |
12409 | ||
12410 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12411 | } |
12412 | ||
12413 | static void | |
981a3fb3 | 12414 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12415 | { |
635c7e8a | 12416 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12417 | } |
12418 | ||
f6ac5f3d PA |
12419 | int |
12420 | remote_target::can_execute_reverse () | |
b2175913 | 12421 | { |
4082afcc PA |
12422 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12423 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
12424 | return 1; |
12425 | else | |
12426 | return 0; | |
b2175913 MS |
12427 | } |
12428 | ||
f6ac5f3d PA |
12429 | int |
12430 | remote_target::supports_non_stop () | |
74531fed PA |
12431 | { |
12432 | return 1; | |
12433 | } | |
12434 | ||
f6ac5f3d PA |
12435 | int |
12436 | remote_target::supports_disable_randomization () | |
03583c20 UW |
12437 | { |
12438 | /* Only supported in extended mode. */ | |
12439 | return 0; | |
12440 | } | |
12441 | ||
f6ac5f3d PA |
12442 | int |
12443 | remote_target::supports_multi_process () | |
8a305172 PA |
12444 | { |
12445 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12446 | |
8020350c | 12447 | return remote_multi_process_p (rs); |
8a305172 PA |
12448 | } |
12449 | ||
70221824 | 12450 | static int |
f6ac5f3d | 12451 | remote_supports_cond_tracepoints () |
782b2b07 | 12452 | { |
4082afcc | 12453 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12454 | } |
12455 | ||
f6ac5f3d PA |
12456 | int |
12457 | remote_target::supports_evaluation_of_breakpoint_conditions () | |
3788aec7 | 12458 | { |
4082afcc | 12459 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12460 | } |
12461 | ||
70221824 | 12462 | static int |
f6ac5f3d | 12463 | remote_supports_fast_tracepoints () |
7a697b8d | 12464 | { |
4082afcc | 12465 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12466 | } |
12467 | ||
0fb4aa4b | 12468 | static int |
f6ac5f3d | 12469 | remote_supports_static_tracepoints () |
0fb4aa4b | 12470 | { |
4082afcc | 12471 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12472 | } |
12473 | ||
1e4d1764 | 12474 | static int |
f6ac5f3d | 12475 | remote_supports_install_in_trace () |
1e4d1764 | 12476 | { |
4082afcc | 12477 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12478 | } |
12479 | ||
f6ac5f3d PA |
12480 | int |
12481 | remote_target::supports_enable_disable_tracepoint () | |
d248b706 | 12482 | { |
4082afcc PA |
12483 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12484 | == PACKET_ENABLE); | |
d248b706 KY |
12485 | } |
12486 | ||
f6ac5f3d PA |
12487 | int |
12488 | remote_target::supports_string_tracing () | |
3065dfb6 | 12489 | { |
4082afcc | 12490 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12491 | } |
12492 | ||
f6ac5f3d PA |
12493 | int |
12494 | remote_target::can_run_breakpoint_commands () | |
d3ce09f5 | 12495 | { |
4082afcc | 12496 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12497 | } |
12498 | ||
f6ac5f3d PA |
12499 | void |
12500 | remote_target::trace_init () | |
35b1e5cc | 12501 | { |
b6bb3468 PA |
12502 | struct remote_state *rs = get_remote_state (); |
12503 | ||
35b1e5cc | 12504 | putpkt ("QTinit"); |
b6bb3468 PA |
12505 | remote_get_noisy_reply (); |
12506 | if (strcmp (rs->buf, "OK") != 0) | |
35b1e5cc SS |
12507 | error (_("Target does not support this command.")); |
12508 | } | |
12509 | ||
409873ef SS |
12510 | /* Recursive routine to walk through command list including loops, and |
12511 | download packets for each command. */ | |
12512 | ||
12513 | static void | |
12514 | remote_download_command_source (int num, ULONGEST addr, | |
12515 | struct command_line *cmds) | |
12516 | { | |
12517 | struct remote_state *rs = get_remote_state (); | |
12518 | struct command_line *cmd; | |
12519 | ||
12520 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12521 | { | |
0df8b418 | 12522 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12523 | strcpy (rs->buf, "QTDPsrc:"); |
12524 | encode_source_string (num, addr, "cmd", cmd->line, | |
12525 | rs->buf + strlen (rs->buf), | |
12526 | rs->buf_size - strlen (rs->buf)); | |
12527 | putpkt (rs->buf); | |
b6bb3468 PA |
12528 | remote_get_noisy_reply (); |
12529 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12530 | warning (_("Target does not support source download.")); |
12531 | ||
12532 | if (cmd->control_type == while_control | |
12533 | || cmd->control_type == while_stepping_control) | |
12534 | { | |
12535 | remote_download_command_source (num, addr, *cmd->body_list); | |
12536 | ||
0df8b418 | 12537 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12538 | strcpy (rs->buf, "QTDPsrc:"); |
12539 | encode_source_string (num, addr, "cmd", "end", | |
12540 | rs->buf + strlen (rs->buf), | |
12541 | rs->buf_size - strlen (rs->buf)); | |
12542 | putpkt (rs->buf); | |
b6bb3468 PA |
12543 | remote_get_noisy_reply (); |
12544 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12545 | warning (_("Target does not support source download.")); |
12546 | } | |
12547 | } | |
12548 | } | |
12549 | ||
f6ac5f3d PA |
12550 | void |
12551 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc | 12552 | { |
bba74b36 | 12553 | #define BUF_SIZE 2048 |
e8ba3115 | 12554 | |
35b1e5cc | 12555 | CORE_ADDR tpaddr; |
409873ef | 12556 | char addrbuf[40]; |
bba74b36 | 12557 | char buf[BUF_SIZE]; |
b44ec619 SM |
12558 | std::vector<std::string> tdp_actions; |
12559 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12560 | char *pkt; |
e8ba3115 | 12561 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12562 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12563 | struct remote_state *rs = get_remote_state (); |
35b1e5cc | 12564 | |
dc673c81 | 12565 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12566 | |
12567 | tpaddr = loc->address; | |
12568 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12569 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12570 | addrbuf, /* address */ | |
12571 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12572 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12573 | /* Fast tracepoints are mostly handled by the target, but we can |
12574 | tell the target how big of an instruction block should be moved | |
12575 | around. */ | |
12576 | if (b->type == bp_fast_tracepoint) | |
12577 | { | |
12578 | /* Only test for support at download time; we may not know | |
12579 | target capabilities at definition time. */ | |
12580 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12581 | { |
6b940e6a PL |
12582 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12583 | NULL)) | |
bba74b36 | 12584 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12585 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12586 | else |
e8ba3115 YQ |
12587 | /* If it passed validation at definition but fails now, |
12588 | something is very wrong. */ | |
12589 | internal_error (__FILE__, __LINE__, | |
12590 | _("Fast tracepoint not " | |
12591 | "valid during download")); | |
35b1e5cc | 12592 | } |
e8ba3115 YQ |
12593 | else |
12594 | /* Fast tracepoints are functionally identical to regular | |
12595 | tracepoints, so don't take lack of support as a reason to | |
12596 | give up on the trace run. */ | |
12597 | warning (_("Target does not support fast tracepoints, " | |
12598 | "downloading %d as regular tracepoint"), b->number); | |
12599 | } | |
12600 | else if (b->type == bp_static_tracepoint) | |
12601 | { | |
12602 | /* Only test for support at download time; we may not know | |
12603 | target capabilities at definition time. */ | |
12604 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12605 | { |
e8ba3115 | 12606 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12607 | |
e8ba3115 YQ |
12608 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12609 | strcat (buf, ":S"); | |
0fb4aa4b | 12610 | else |
e8ba3115 | 12611 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12612 | } |
e8ba3115 YQ |
12613 | else |
12614 | /* Fast tracepoints are functionally identical to regular | |
12615 | tracepoints, so don't take lack of support as a reason | |
12616 | to give up on the trace run. */ | |
12617 | error (_("Target does not support static tracepoints")); | |
12618 | } | |
12619 | /* If the tracepoint has a conditional, make it into an agent | |
12620 | expression and append to the definition. */ | |
12621 | if (loc->cond) | |
12622 | { | |
12623 | /* Only test support at download time, we may not know target | |
12624 | capabilities at definition time. */ | |
12625 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12626 | { |
833177a4 | 12627 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12628 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12629 | aexpr->len); | |
e8ba3115 | 12630 | pkt = buf + strlen (buf); |
b44ec619 | 12631 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12632 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12633 | *pkt = '\0'; | |
35b1e5cc | 12634 | } |
e8ba3115 YQ |
12635 | else |
12636 | warning (_("Target does not support conditional tracepoints, " | |
12637 | "ignoring tp %d cond"), b->number); | |
12638 | } | |
35b1e5cc | 12639 | |
d9b3f62e | 12640 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12641 | strcat (buf, "-"); |
12642 | putpkt (buf); | |
b6bb3468 PA |
12643 | remote_get_noisy_reply (); |
12644 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12645 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12646 | |
e8ba3115 | 12647 | /* do_single_steps (t); */ |
b44ec619 SM |
12648 | for (auto action_it = tdp_actions.begin (); |
12649 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12650 | { |
b44ec619 SM |
12651 | QUIT; /* Allow user to bail out with ^C. */ |
12652 | ||
12653 | bool has_more = (action_it != tdp_actions.end () | |
12654 | || !stepping_actions.empty ()); | |
12655 | ||
12656 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", | |
12657 | b->number, addrbuf, /* address */ | |
12658 | action_it->c_str (), | |
12659 | has_more ? '-' : 0); | |
12660 | putpkt (buf); | |
12661 | remote_get_noisy_reply (); | |
12662 | if (strcmp (rs->buf, "OK")) | |
12663 | error (_("Error on target while setting tracepoints.")); | |
e8ba3115 | 12664 | } |
409873ef | 12665 | |
b44ec619 SM |
12666 | for (auto action_it = stepping_actions.begin (); |
12667 | action_it != stepping_actions.end (); action_it++) | |
12668 | { | |
12669 | QUIT; /* Allow user to bail out with ^C. */ | |
12670 | ||
12671 | bool is_first = action_it == stepping_actions.begin (); | |
12672 | bool has_more = action_it != stepping_actions.end (); | |
12673 | ||
12674 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", | |
12675 | b->number, addrbuf, /* address */ | |
12676 | is_first ? "S" : "", | |
12677 | action_it->c_str (), | |
12678 | has_more ? "-" : ""); | |
12679 | putpkt (buf); | |
12680 | remote_get_noisy_reply (); | |
12681 | if (strcmp (rs->buf, "OK")) | |
12682 | error (_("Error on target while setting tracepoints.")); | |
12683 | } | |
12684 | ||
4082afcc | 12685 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12686 | { |
f00aae0f | 12687 | if (b->location != NULL) |
409873ef | 12688 | { |
e8ba3115 | 12689 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12690 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12691 | event_location_to_string (b->location.get ()), |
f00aae0f | 12692 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 | 12693 | putpkt (buf); |
b6bb3468 PA |
12694 | remote_get_noisy_reply (); |
12695 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12696 | warning (_("Target does not support source download.")); |
409873ef | 12697 | } |
e8ba3115 YQ |
12698 | if (b->cond_string) |
12699 | { | |
12700 | strcpy (buf, "QTDPsrc:"); | |
12701 | encode_source_string (b->number, loc->address, | |
12702 | "cond", b->cond_string, buf + strlen (buf), | |
12703 | 2048 - strlen (buf)); | |
12704 | putpkt (buf); | |
b6bb3468 PA |
12705 | remote_get_noisy_reply (); |
12706 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 YQ |
12707 | warning (_("Target does not support source download.")); |
12708 | } | |
12709 | remote_download_command_source (b->number, loc->address, | |
12710 | breakpoint_commands (b)); | |
35b1e5cc | 12711 | } |
35b1e5cc SS |
12712 | } |
12713 | ||
f6ac5f3d PA |
12714 | int |
12715 | remote_target::can_download_tracepoint () | |
1e4d1764 | 12716 | { |
1e51243a PA |
12717 | struct remote_state *rs = get_remote_state (); |
12718 | struct trace_status *ts; | |
12719 | int status; | |
12720 | ||
12721 | /* Don't try to install tracepoints until we've relocated our | |
12722 | symbols, and fetched and merged the target's tracepoint list with | |
12723 | ours. */ | |
12724 | if (rs->starting_up) | |
12725 | return 0; | |
12726 | ||
12727 | ts = current_trace_status (); | |
f6ac5f3d | 12728 | status = get_trace_status (ts); |
1e4d1764 YQ |
12729 | |
12730 | if (status == -1 || !ts->running_known || !ts->running) | |
12731 | return 0; | |
12732 | ||
12733 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12734 | installing tracepoint in trace, we have to return. */ | |
12735 | if (!remote_supports_install_in_trace ()) | |
12736 | return 0; | |
12737 | ||
12738 | return 1; | |
12739 | } | |
12740 | ||
12741 | ||
f6ac5f3d PA |
12742 | void |
12743 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
12744 | { |
12745 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12746 | char *p; |
35b1e5cc | 12747 | |
bba74b36 | 12748 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
12749 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
12750 | tsv.builtin); | |
00bf0b85 | 12751 | p = rs->buf + strlen (rs->buf); |
c252925c | 12752 | if ((p - rs->buf) + tsv.name.length () * 2 >= get_remote_packet_size ()) |
00bf0b85 | 12753 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 12754 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 12755 | *p++ = '\0'; |
35b1e5cc | 12756 | putpkt (rs->buf); |
b6bb3468 PA |
12757 | remote_get_noisy_reply (); |
12758 | if (*rs->buf == '\0') | |
ad91cd99 | 12759 | error (_("Target does not support this command.")); |
b6bb3468 | 12760 | if (strcmp (rs->buf, "OK") != 0) |
ad91cd99 | 12761 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
12762 | } |
12763 | ||
f6ac5f3d PA |
12764 | void |
12765 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
12766 | { |
12767 | struct remote_state *rs = get_remote_state (); | |
12768 | char addr_buf[40]; | |
12769 | ||
12770 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12771 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12772 | location->owner->number, addr_buf); | |
d248b706 | 12773 | putpkt (rs->buf); |
b6bb3468 | 12774 | remote_get_noisy_reply (); |
d248b706 KY |
12775 | if (*rs->buf == '\0') |
12776 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12777 | if (strcmp (rs->buf, "OK") != 0) | |
12778 | error (_("Error on target while enabling tracepoint.")); | |
12779 | } | |
12780 | ||
f6ac5f3d PA |
12781 | void |
12782 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
12783 | { |
12784 | struct remote_state *rs = get_remote_state (); | |
12785 | char addr_buf[40]; | |
12786 | ||
12787 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12788 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12789 | location->owner->number, addr_buf); | |
d248b706 | 12790 | putpkt (rs->buf); |
b6bb3468 | 12791 | remote_get_noisy_reply (); |
d248b706 KY |
12792 | if (*rs->buf == '\0') |
12793 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12794 | if (strcmp (rs->buf, "OK") != 0) | |
12795 | error (_("Error on target while disabling tracepoint.")); | |
12796 | } | |
12797 | ||
f6ac5f3d PA |
12798 | void |
12799 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
12800 | { |
12801 | asection *s; | |
81b9b86e | 12802 | bfd *abfd = NULL; |
35b1e5cc | 12803 | bfd_size_type size; |
608bcef2 | 12804 | bfd_vma vma; |
35b1e5cc | 12805 | int anysecs = 0; |
c2fa21f1 | 12806 | int offset = 0; |
35b1e5cc SS |
12807 | |
12808 | if (!exec_bfd) | |
12809 | return; /* No information to give. */ | |
12810 | ||
b6bb3468 PA |
12811 | struct remote_state *rs = get_remote_state (); |
12812 | ||
12813 | strcpy (rs->buf, "QTro"); | |
12814 | offset = strlen (rs->buf); | |
35b1e5cc SS |
12815 | for (s = exec_bfd->sections; s; s = s->next) |
12816 | { | |
12817 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12818 | int sec_length; |
35b1e5cc SS |
12819 | |
12820 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12821 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12822 | (s->flags & SEC_READONLY) == 0) |
12823 | continue; | |
12824 | ||
12825 | anysecs = 1; | |
81b9b86e | 12826 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12827 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12828 | sprintf_vma (tmp1, vma); |
12829 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 12830 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
b6bb3468 | 12831 | if (offset + sec_length + 1 > rs->buf_size) |
c2fa21f1 | 12832 | { |
4082afcc | 12833 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12834 | warning (_("\ |
c2fa21f1 HZ |
12835 | Too many sections for read-only sections definition packet.")); |
12836 | break; | |
12837 | } | |
b6bb3468 | 12838 | xsnprintf (rs->buf + offset, rs->buf_size - offset, ":%s,%s", |
bba74b36 | 12839 | tmp1, tmp2); |
c2fa21f1 | 12840 | offset += sec_length; |
35b1e5cc SS |
12841 | } |
12842 | if (anysecs) | |
12843 | { | |
b6bb3468 PA |
12844 | putpkt (rs->buf); |
12845 | getpkt (&rs->buf, &rs->buf_size, 0); | |
35b1e5cc SS |
12846 | } |
12847 | } | |
12848 | ||
f6ac5f3d PA |
12849 | void |
12850 | remote_target::trace_start () | |
35b1e5cc | 12851 | { |
b6bb3468 PA |
12852 | struct remote_state *rs = get_remote_state (); |
12853 | ||
35b1e5cc | 12854 | putpkt ("QTStart"); |
b6bb3468 PA |
12855 | remote_get_noisy_reply (); |
12856 | if (*rs->buf == '\0') | |
ad91cd99 | 12857 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12858 | if (strcmp (rs->buf, "OK") != 0) |
12859 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12860 | } |
12861 | ||
f6ac5f3d PA |
12862 | int |
12863 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 12864 | { |
953b98d1 | 12865 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12866 | char *p = NULL; |
0df8b418 | 12867 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12868 | extern int trace_regblock_size; |
bd3eecc3 | 12869 | enum packet_result result; |
b6bb3468 | 12870 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 12871 | |
4082afcc | 12872 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12873 | return -1; |
a744cf53 | 12874 | |
5cd63fda PA |
12875 | trace_regblock_size |
12876 | = get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; | |
00bf0b85 | 12877 | |
049dc89b JK |
12878 | putpkt ("qTStatus"); |
12879 | ||
492d29ea | 12880 | TRY |
67f41397 | 12881 | { |
b6bb3468 | 12882 | p = remote_get_noisy_reply (); |
67f41397 | 12883 | } |
492d29ea | 12884 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12885 | { |
598d3636 JK |
12886 | if (ex.error != TARGET_CLOSE_ERROR) |
12887 | { | |
12888 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12889 | return -1; | |
12890 | } | |
12891 | throw_exception (ex); | |
67f41397 | 12892 | } |
492d29ea | 12893 | END_CATCH |
00bf0b85 | 12894 | |
bd3eecc3 PA |
12895 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12896 | ||
00bf0b85 | 12897 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12898 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12899 | return -1; |
35b1e5cc | 12900 | |
00bf0b85 | 12901 | /* We're working with a live target. */ |
f5911ea1 | 12902 | ts->filename = NULL; |
00bf0b85 | 12903 | |
00bf0b85 | 12904 | if (*p++ != 'T') |
b6bb3468 | 12905 | error (_("Bogus trace status reply from target: %s"), rs->buf); |
35b1e5cc | 12906 | |
84cebc4a YQ |
12907 | /* Function 'parse_trace_status' sets default value of each field of |
12908 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12909 | parse_trace_status (p, ts); |
12910 | ||
12911 | return ts->running; | |
35b1e5cc SS |
12912 | } |
12913 | ||
f6ac5f3d PA |
12914 | void |
12915 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
12916 | struct uploaded_tp *utp) | |
f196051f SS |
12917 | { |
12918 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12919 | char *reply; |
12920 | struct bp_location *loc; | |
12921 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12922 | size_t size = get_remote_packet_size (); |
f196051f SS |
12923 | |
12924 | if (tp) | |
12925 | { | |
c1fc2657 | 12926 | tp->hit_count = 0; |
f196051f | 12927 | tp->traceframe_usage = 0; |
c1fc2657 | 12928 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
12929 | { |
12930 | /* If the tracepoint was never downloaded, don't go asking for | |
12931 | any status. */ | |
12932 | if (tp->number_on_target == 0) | |
12933 | continue; | |
bba74b36 YQ |
12934 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12935 | phex_nz (loc->address, 0)); | |
f196051f | 12936 | putpkt (rs->buf); |
b6bb3468 | 12937 | reply = remote_get_noisy_reply (); |
f196051f SS |
12938 | if (reply && *reply) |
12939 | { | |
12940 | if (*reply == 'V') | |
12941 | parse_tracepoint_status (reply + 1, bp, utp); | |
12942 | } | |
12943 | } | |
12944 | } | |
12945 | else if (utp) | |
12946 | { | |
12947 | utp->hit_count = 0; | |
12948 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12949 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12950 | phex_nz (utp->addr, 0)); | |
f196051f | 12951 | putpkt (rs->buf); |
b6bb3468 | 12952 | reply = remote_get_noisy_reply (); |
f196051f SS |
12953 | if (reply && *reply) |
12954 | { | |
12955 | if (*reply == 'V') | |
12956 | parse_tracepoint_status (reply + 1, bp, utp); | |
12957 | } | |
12958 | } | |
12959 | } | |
12960 | ||
f6ac5f3d PA |
12961 | void |
12962 | remote_target::trace_stop () | |
35b1e5cc | 12963 | { |
b6bb3468 PA |
12964 | struct remote_state *rs = get_remote_state (); |
12965 | ||
35b1e5cc | 12966 | putpkt ("QTStop"); |
b6bb3468 PA |
12967 | remote_get_noisy_reply (); |
12968 | if (*rs->buf == '\0') | |
ad91cd99 | 12969 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12970 | if (strcmp (rs->buf, "OK") != 0) |
12971 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12972 | } |
12973 | ||
f6ac5f3d PA |
12974 | int |
12975 | remote_target::trace_find (enum trace_find_type type, int num, | |
12976 | CORE_ADDR addr1, CORE_ADDR addr2, | |
12977 | int *tpp) | |
35b1e5cc SS |
12978 | { |
12979 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12980 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12981 | char *p, *reply; |
12982 | int target_frameno = -1, target_tracept = -1; | |
12983 | ||
e6e4e701 PA |
12984 | /* Lookups other than by absolute frame number depend on the current |
12985 | trace selected, so make sure it is correct on the remote end | |
12986 | first. */ | |
12987 | if (type != tfind_number) | |
12988 | set_remote_traceframe (); | |
12989 | ||
35b1e5cc SS |
12990 | p = rs->buf; |
12991 | strcpy (p, "QTFrame:"); | |
12992 | p = strchr (p, '\0'); | |
12993 | switch (type) | |
12994 | { | |
12995 | case tfind_number: | |
bba74b36 | 12996 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12997 | break; |
12998 | case tfind_pc: | |
bba74b36 | 12999 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13000 | break; |
13001 | case tfind_tp: | |
bba74b36 | 13002 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13003 | break; |
13004 | case tfind_range: | |
bba74b36 YQ |
13005 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13006 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13007 | break; |
13008 | case tfind_outside: | |
bba74b36 YQ |
13009 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13010 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13011 | break; |
13012 | default: | |
9b20d036 | 13013 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13014 | } |
13015 | ||
13016 | putpkt (rs->buf); | |
b6bb3468 | 13017 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13018 | if (*reply == '\0') |
13019 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13020 | |
13021 | while (reply && *reply) | |
13022 | switch (*reply) | |
13023 | { | |
13024 | case 'F': | |
f197e0f1 VP |
13025 | p = ++reply; |
13026 | target_frameno = (int) strtol (p, &reply, 16); | |
13027 | if (reply == p) | |
13028 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13029 | /* Don't update our remote traceframe number cache on failure |
13030 | to select a remote traceframe. */ | |
f197e0f1 VP |
13031 | if (target_frameno == -1) |
13032 | return -1; | |
35b1e5cc SS |
13033 | break; |
13034 | case 'T': | |
f197e0f1 VP |
13035 | p = ++reply; |
13036 | target_tracept = (int) strtol (p, &reply, 16); | |
13037 | if (reply == p) | |
13038 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13039 | break; |
13040 | case 'O': /* "OK"? */ | |
13041 | if (reply[1] == 'K' && reply[2] == '\0') | |
13042 | reply += 2; | |
13043 | else | |
13044 | error (_("Bogus reply from target: %s"), reply); | |
13045 | break; | |
13046 | default: | |
13047 | error (_("Bogus reply from target: %s"), reply); | |
13048 | } | |
13049 | if (tpp) | |
13050 | *tpp = target_tracept; | |
e6e4e701 | 13051 | |
262e1174 | 13052 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13053 | return target_frameno; |
13054 | } | |
13055 | ||
f6ac5f3d PA |
13056 | int |
13057 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
35b1e5cc SS |
13058 | { |
13059 | struct remote_state *rs = get_remote_state (); | |
13060 | char *reply; | |
13061 | ULONGEST uval; | |
13062 | ||
e6e4e701 PA |
13063 | set_remote_traceframe (); |
13064 | ||
bba74b36 | 13065 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13066 | putpkt (rs->buf); |
b6bb3468 | 13067 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13068 | if (reply && *reply) |
13069 | { | |
13070 | if (*reply == 'V') | |
13071 | { | |
13072 | unpack_varlen_hex (reply + 1, &uval); | |
13073 | *val = (LONGEST) uval; | |
13074 | return 1; | |
13075 | } | |
13076 | } | |
13077 | return 0; | |
13078 | } | |
13079 | ||
f6ac5f3d PA |
13080 | int |
13081 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13082 | { |
13083 | struct remote_state *rs = get_remote_state (); | |
13084 | char *p, *reply; | |
13085 | ||
13086 | p = rs->buf; | |
13087 | strcpy (p, "QTSave:"); | |
13088 | p += strlen (p); | |
13089 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
13090 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 13091 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13092 | *p++ = '\0'; |
13093 | putpkt (rs->buf); | |
b6bb3468 | 13094 | reply = remote_get_noisy_reply (); |
d6c5869f | 13095 | if (*reply == '\0') |
ad91cd99 PA |
13096 | error (_("Target does not support this command.")); |
13097 | if (strcmp (reply, "OK") != 0) | |
13098 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13099 | return 0; |
13100 | } | |
13101 | ||
13102 | /* This is basically a memory transfer, but needs to be its own packet | |
13103 | because we don't know how the target actually organizes its trace | |
13104 | memory, plus we want to be able to ask for as much as possible, but | |
13105 | not be unhappy if we don't get as much as we ask for. */ | |
13106 | ||
f6ac5f3d PA |
13107 | LONGEST |
13108 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13109 | { |
13110 | struct remote_state *rs = get_remote_state (); | |
13111 | char *reply; | |
13112 | char *p; | |
13113 | int rslt; | |
13114 | ||
13115 | p = rs->buf; | |
13116 | strcpy (p, "qTBuffer:"); | |
13117 | p += strlen (p); | |
13118 | p += hexnumstr (p, offset); | |
13119 | *p++ = ','; | |
13120 | p += hexnumstr (p, len); | |
13121 | *p++ = '\0'; | |
13122 | ||
13123 | putpkt (rs->buf); | |
b6bb3468 | 13124 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13125 | if (reply && *reply) |
13126 | { | |
13127 | /* 'l' by itself means we're at the end of the buffer and | |
13128 | there is nothing more to get. */ | |
13129 | if (*reply == 'l') | |
13130 | return 0; | |
13131 | ||
13132 | /* Convert the reply into binary. Limit the number of bytes to | |
13133 | convert according to our passed-in buffer size, rather than | |
13134 | what was returned in the packet; if the target is | |
13135 | unexpectedly generous and gives us a bigger reply than we | |
13136 | asked for, we don't want to crash. */ | |
b6bb3468 | 13137 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13138 | return rslt; |
13139 | } | |
13140 | ||
13141 | /* Something went wrong, flag as an error. */ | |
13142 | return -1; | |
13143 | } | |
13144 | ||
f6ac5f3d PA |
13145 | void |
13146 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13147 | { |
13148 | struct remote_state *rs = get_remote_state (); | |
13149 | ||
4082afcc | 13150 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13151 | { |
ad91cd99 PA |
13152 | char *reply; |
13153 | ||
bba74b36 | 13154 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 13155 | putpkt (rs->buf); |
b6bb3468 | 13156 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13157 | if (*reply == '\0') |
33da3f1c | 13158 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13159 | if (strcmp (reply, "OK") != 0) |
13160 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13161 | } |
13162 | else if (val) | |
13163 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13164 | } |
13165 | ||
f6ac5f3d PA |
13166 | int |
13167 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c VP |
13168 | { |
13169 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 13170 | |
7aabaf9d SM |
13171 | if (info != NULL && info->priv != NULL) |
13172 | return get_remote_thread_info (info)->core; | |
13173 | ||
dc146f7c VP |
13174 | return -1; |
13175 | } | |
13176 | ||
f6ac5f3d PA |
13177 | void |
13178 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13179 | { |
13180 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13181 | char *reply; |
4daf5ac0 | 13182 | |
bba74b36 | 13183 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 13184 | putpkt (rs->buf); |
b6bb3468 | 13185 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13186 | if (*reply == '\0') |
4daf5ac0 | 13187 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13188 | if (strcmp (reply, "OK") != 0) |
13189 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13190 | } |
13191 | ||
f6ac5f3d PA |
13192 | traceframe_info_up |
13193 | remote_target::traceframe_info () | |
b3b9301e | 13194 | { |
9018be22 | 13195 | gdb::optional<gdb::char_vector> text |
f6ac5f3d | 13196 | = target_read_stralloc (target_stack, TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13197 | NULL); |
9018be22 SM |
13198 | if (text) |
13199 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13200 | |
13201 | return NULL; | |
13202 | } | |
13203 | ||
405f8e94 SS |
13204 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13205 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13206 | if the packet is not supported, and 0 if the minimum instruction | |
13207 | length is unknown. */ | |
13208 | ||
f6ac5f3d PA |
13209 | int |
13210 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13211 | { |
13212 | struct remote_state *rs = get_remote_state (); | |
13213 | char *reply; | |
13214 | ||
e886a173 PA |
13215 | /* If we're not debugging a process yet, the IPA can't be |
13216 | loaded. */ | |
13217 | if (!target_has_execution) | |
13218 | return 0; | |
13219 | ||
13220 | /* Make sure the remote is pointing at the right process. */ | |
13221 | set_general_process (); | |
13222 | ||
bba74b36 | 13223 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13224 | putpkt (rs->buf); |
b6bb3468 | 13225 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13226 | if (*reply == '\0') |
13227 | return -1; | |
13228 | else | |
13229 | { | |
13230 | ULONGEST min_insn_len; | |
13231 | ||
13232 | unpack_varlen_hex (reply, &min_insn_len); | |
13233 | ||
13234 | return (int) min_insn_len; | |
13235 | } | |
13236 | } | |
13237 | ||
f6ac5f3d PA |
13238 | void |
13239 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13240 | { |
4082afcc | 13241 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13242 | { |
13243 | struct remote_state *rs = get_remote_state (); | |
13244 | char *buf = rs->buf; | |
13245 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13246 | enum packet_result result; | |
13247 | ||
13248 | gdb_assert (val >= 0 || val == -1); | |
13249 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13250 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13251 | if (val < 0) | |
13252 | { | |
13253 | *buf++ = '-'; | |
13254 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13255 | } | |
13256 | else | |
13257 | buf += hexnumstr (buf, (ULONGEST) val); | |
13258 | ||
13259 | putpkt (rs->buf); | |
b6bb3468 | 13260 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13261 | result = packet_ok (rs->buf, |
13262 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13263 | ||
13264 | if (result != PACKET_OK) | |
13265 | warning (_("Bogus reply from target: %s"), rs->buf); | |
13266 | } | |
13267 | } | |
13268 | ||
f6ac5f3d PA |
13269 | int |
13270 | remote_target::set_trace_notes (const char *user, const char *notes, | |
13271 | const char *stop_notes) | |
f196051f SS |
13272 | { |
13273 | struct remote_state *rs = get_remote_state (); | |
13274 | char *reply; | |
13275 | char *buf = rs->buf; | |
13276 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13277 | int nbytes; | |
13278 | ||
13279 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13280 | if (user) | |
13281 | { | |
13282 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13283 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13284 | buf += 2 * nbytes; |
13285 | *buf++ = ';'; | |
13286 | } | |
13287 | if (notes) | |
13288 | { | |
13289 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13290 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13291 | buf += 2 * nbytes; |
13292 | *buf++ = ';'; | |
13293 | } | |
13294 | if (stop_notes) | |
13295 | { | |
13296 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13297 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13298 | buf += 2 * nbytes; |
13299 | *buf++ = ';'; | |
13300 | } | |
13301 | /* Ensure the buffer is terminated. */ | |
13302 | *buf = '\0'; | |
13303 | ||
13304 | putpkt (rs->buf); | |
b6bb3468 | 13305 | reply = remote_get_noisy_reply (); |
f196051f SS |
13306 | if (*reply == '\0') |
13307 | return 0; | |
13308 | ||
13309 | if (strcmp (reply, "OK") != 0) | |
13310 | error (_("Bogus reply from target: %s"), reply); | |
13311 | ||
13312 | return 1; | |
13313 | } | |
13314 | ||
f6ac5f3d PA |
13315 | int |
13316 | remote_target::use_agent (int use) | |
d1feda86 | 13317 | { |
4082afcc | 13318 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13319 | { |
13320 | struct remote_state *rs = get_remote_state (); | |
13321 | ||
13322 | /* If the stub supports QAgent. */ | |
bba74b36 | 13323 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13324 | putpkt (rs->buf); |
13325 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13326 | ||
13327 | if (strcmp (rs->buf, "OK") == 0) | |
13328 | { | |
f6ac5f3d | 13329 | ::use_agent = use; |
d1feda86 YQ |
13330 | return 1; |
13331 | } | |
13332 | } | |
13333 | ||
13334 | return 0; | |
13335 | } | |
13336 | ||
f6ac5f3d PA |
13337 | int |
13338 | remote_target::can_use_agent () | |
d1feda86 | 13339 | { |
4082afcc | 13340 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13341 | } |
13342 | ||
9accd112 MM |
13343 | struct btrace_target_info |
13344 | { | |
13345 | /* The ptid of the traced thread. */ | |
13346 | ptid_t ptid; | |
f4abbc16 MM |
13347 | |
13348 | /* The obtained branch trace configuration. */ | |
13349 | struct btrace_config conf; | |
9accd112 MM |
13350 | }; |
13351 | ||
f4abbc16 MM |
13352 | /* Reset our idea of our target's btrace configuration. */ |
13353 | ||
13354 | static void | |
13355 | remote_btrace_reset (void) | |
13356 | { | |
13357 | struct remote_state *rs = get_remote_state (); | |
13358 | ||
13359 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13360 | } | |
13361 | ||
f4abbc16 MM |
13362 | /* Synchronize the configuration with the target. */ |
13363 | ||
13364 | static void | |
13365 | btrace_sync_conf (const struct btrace_config *conf) | |
13366 | { | |
d33501a5 MM |
13367 | struct packet_config *packet; |
13368 | struct remote_state *rs; | |
13369 | char *buf, *pos, *endbuf; | |
13370 | ||
13371 | rs = get_remote_state (); | |
13372 | buf = rs->buf; | |
13373 | endbuf = buf + get_remote_packet_size (); | |
13374 | ||
13375 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13376 | if (packet_config_support (packet) == PACKET_ENABLE | |
13377 | && conf->bts.size != rs->btrace_config.bts.size) | |
13378 | { | |
13379 | pos = buf; | |
13380 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13381 | conf->bts.size); | |
13382 | ||
13383 | putpkt (buf); | |
13384 | getpkt (&buf, &rs->buf_size, 0); | |
13385 | ||
13386 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13387 | { | |
13388 | if (buf[0] == 'E' && buf[1] == '.') | |
13389 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13390 | else | |
13391 | error (_("Failed to configure the BTS buffer size.")); | |
13392 | } | |
13393 | ||
13394 | rs->btrace_config.bts.size = conf->bts.size; | |
13395 | } | |
b20a6524 MM |
13396 | |
13397 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13398 | if (packet_config_support (packet) == PACKET_ENABLE | |
13399 | && conf->pt.size != rs->btrace_config.pt.size) | |
13400 | { | |
13401 | pos = buf; | |
13402 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13403 | conf->pt.size); | |
13404 | ||
13405 | putpkt (buf); | |
13406 | getpkt (&buf, &rs->buf_size, 0); | |
13407 | ||
13408 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13409 | { | |
13410 | if (buf[0] == 'E' && buf[1] == '.') | |
13411 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13412 | else | |
13413 | error (_("Failed to configure the trace buffer size.")); | |
13414 | } | |
13415 | ||
13416 | rs->btrace_config.pt.size = conf->pt.size; | |
13417 | } | |
f4abbc16 MM |
13418 | } |
13419 | ||
13420 | /* Read the current thread's btrace configuration from the target and | |
13421 | store it into CONF. */ | |
13422 | ||
13423 | static void | |
13424 | btrace_read_config (struct btrace_config *conf) | |
13425 | { | |
9018be22 | 13426 | gdb::optional<gdb::char_vector> xml |
f6ac5f3d | 13427 | = target_read_stralloc (target_stack, TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13428 | if (xml) |
13429 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13430 | } |
13431 | ||
c0272db5 TW |
13432 | /* Maybe reopen target btrace. */ |
13433 | ||
13434 | static void | |
13435 | remote_btrace_maybe_reopen (void) | |
13436 | { | |
13437 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13438 | struct thread_info *tp; |
13439 | int btrace_target_pushed = 0; | |
13440 | int warned = 0; | |
13441 | ||
5ed8105e PA |
13442 | scoped_restore_current_thread restore_thread; |
13443 | ||
c0272db5 TW |
13444 | ALL_NON_EXITED_THREADS (tp) |
13445 | { | |
13446 | set_general_thread (tp->ptid); | |
13447 | ||
13448 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13449 | btrace_read_config (&rs->btrace_config); | |
13450 | ||
13451 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13452 | continue; | |
13453 | ||
13454 | #if !defined (HAVE_LIBIPT) | |
13455 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13456 | { | |
13457 | if (!warned) | |
13458 | { | |
13459 | warned = 1; | |
c4e12631 MM |
13460 | warning (_("Target is recording using Intel Processor Trace " |
13461 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13462 | } |
13463 | ||
13464 | continue; | |
13465 | } | |
13466 | #endif /* !defined (HAVE_LIBIPT) */ | |
13467 | ||
13468 | /* Push target, once, but before anything else happens. This way our | |
13469 | changes to the threads will be cleaned up by unpushing the target | |
13470 | in case btrace_read_config () throws. */ | |
13471 | if (!btrace_target_pushed) | |
13472 | { | |
13473 | btrace_target_pushed = 1; | |
13474 | record_btrace_push_target (); | |
13475 | printf_filtered (_("Target is recording using %s.\n"), | |
13476 | btrace_format_string (rs->btrace_config.format)); | |
13477 | } | |
13478 | ||
13479 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13480 | tp->btrace.target->ptid = tp->ptid; | |
13481 | tp->btrace.target->conf = rs->btrace_config; | |
13482 | } | |
c0272db5 TW |
13483 | } |
13484 | ||
9accd112 MM |
13485 | /* Enable branch tracing. */ |
13486 | ||
f6ac5f3d PA |
13487 | struct btrace_target_info * |
13488 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13489 | { |
13490 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13491 | struct packet_config *packet = NULL; |
9accd112 MM |
13492 | struct remote_state *rs = get_remote_state (); |
13493 | char *buf = rs->buf; | |
13494 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13495 | ||
b20a6524 MM |
13496 | switch (conf->format) |
13497 | { | |
13498 | case BTRACE_FORMAT_BTS: | |
13499 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13500 | break; | |
13501 | ||
13502 | case BTRACE_FORMAT_PT: | |
13503 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13504 | break; | |
13505 | } | |
13506 | ||
13507 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13508 | error (_("Target does not support branch tracing.")); |
13509 | ||
f4abbc16 MM |
13510 | btrace_sync_conf (conf); |
13511 | ||
9accd112 MM |
13512 | set_general_thread (ptid); |
13513 | ||
13514 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13515 | putpkt (rs->buf); | |
13516 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13517 | ||
13518 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13519 | { | |
13520 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13521 | error (_("Could not enable branch tracing for %s: %s"), | |
13522 | target_pid_to_str (ptid), rs->buf + 2); | |
13523 | else | |
13524 | error (_("Could not enable branch tracing for %s."), | |
13525 | target_pid_to_str (ptid)); | |
13526 | } | |
13527 | ||
8d749320 | 13528 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13529 | tinfo->ptid = ptid; |
13530 | ||
f4abbc16 MM |
13531 | /* If we fail to read the configuration, we lose some information, but the |
13532 | tracing itself is not impacted. */ | |
492d29ea PA |
13533 | TRY |
13534 | { | |
13535 | btrace_read_config (&tinfo->conf); | |
13536 | } | |
13537 | CATCH (err, RETURN_MASK_ERROR) | |
13538 | { | |
13539 | if (err.message != NULL) | |
13540 | warning ("%s", err.message); | |
13541 | } | |
13542 | END_CATCH | |
f4abbc16 | 13543 | |
9accd112 MM |
13544 | return tinfo; |
13545 | } | |
13546 | ||
13547 | /* Disable branch tracing. */ | |
13548 | ||
f6ac5f3d PA |
13549 | void |
13550 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13551 | { |
13552 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13553 | struct remote_state *rs = get_remote_state (); | |
13554 | char *buf = rs->buf; | |
13555 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13556 | ||
4082afcc | 13557 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13558 | error (_("Target does not support branch tracing.")); |
13559 | ||
13560 | set_general_thread (tinfo->ptid); | |
13561 | ||
13562 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13563 | putpkt (rs->buf); | |
13564 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13565 | ||
13566 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13567 | { | |
13568 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13569 | error (_("Could not disable branch tracing for %s: %s"), | |
13570 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13571 | else | |
13572 | error (_("Could not disable branch tracing for %s."), | |
13573 | target_pid_to_str (tinfo->ptid)); | |
13574 | } | |
13575 | ||
13576 | xfree (tinfo); | |
13577 | } | |
13578 | ||
13579 | /* Teardown branch tracing. */ | |
13580 | ||
f6ac5f3d PA |
13581 | void |
13582 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13583 | { |
13584 | /* We must not talk to the target during teardown. */ | |
13585 | xfree (tinfo); | |
13586 | } | |
13587 | ||
13588 | /* Read the branch trace. */ | |
13589 | ||
f6ac5f3d PA |
13590 | enum btrace_error |
13591 | remote_target::read_btrace (struct btrace_data *btrace, | |
13592 | struct btrace_target_info *tinfo, | |
13593 | enum btrace_read_type type) | |
9accd112 MM |
13594 | { |
13595 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13596 | const char *annex; |
9accd112 | 13597 | |
4082afcc | 13598 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13599 | error (_("Target does not support branch tracing.")); |
13600 | ||
13601 | #if !defined(HAVE_LIBEXPAT) | |
13602 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13603 | #endif | |
13604 | ||
13605 | switch (type) | |
13606 | { | |
864089d2 | 13607 | case BTRACE_READ_ALL: |
9accd112 MM |
13608 | annex = "all"; |
13609 | break; | |
864089d2 | 13610 | case BTRACE_READ_NEW: |
9accd112 MM |
13611 | annex = "new"; |
13612 | break; | |
969c39fb MM |
13613 | case BTRACE_READ_DELTA: |
13614 | annex = "delta"; | |
13615 | break; | |
9accd112 MM |
13616 | default: |
13617 | internal_error (__FILE__, __LINE__, | |
13618 | _("Bad branch tracing read type: %u."), | |
13619 | (unsigned int) type); | |
13620 | } | |
13621 | ||
9018be22 | 13622 | gdb::optional<gdb::char_vector> xml |
f6ac5f3d | 13623 | = target_read_stralloc (target_stack, TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13624 | if (!xml) |
969c39fb | 13625 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13626 | |
9018be22 | 13627 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13628 | |
969c39fb | 13629 | return BTRACE_ERR_NONE; |
9accd112 MM |
13630 | } |
13631 | ||
f6ac5f3d PA |
13632 | const struct btrace_config * |
13633 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
13634 | { |
13635 | return &tinfo->conf; | |
13636 | } | |
13637 | ||
f6ac5f3d PA |
13638 | int |
13639 | remote_target::augmented_libraries_svr4_read () | |
ced63ec0 | 13640 | { |
4082afcc PA |
13641 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13642 | == PACKET_ENABLE); | |
ced63ec0 GB |
13643 | } |
13644 | ||
9dd130a0 TT |
13645 | /* Implementation of to_load. */ |
13646 | ||
f6ac5f3d PA |
13647 | void |
13648 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
13649 | { |
13650 | generic_load (name, from_tty); | |
13651 | } | |
13652 | ||
c78fa86a GB |
13653 | /* Accepts an integer PID; returns a string representing a file that |
13654 | can be opened on the remote side to get the symbols for the child | |
13655 | process. Returns NULL if the operation is not supported. */ | |
13656 | ||
f6ac5f3d PA |
13657 | char * |
13658 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 13659 | { |
9018be22 | 13660 | static gdb::optional<gdb::char_vector> filename; |
835205d0 GB |
13661 | struct inferior *inf; |
13662 | char *annex = NULL; | |
c78fa86a GB |
13663 | |
13664 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13665 | return NULL; | |
13666 | ||
835205d0 GB |
13667 | inf = find_inferior_pid (pid); |
13668 | if (inf == NULL) | |
13669 | internal_error (__FILE__, __LINE__, | |
13670 | _("not currently attached to process %d"), pid); | |
13671 | ||
13672 | if (!inf->fake_pid_p) | |
13673 | { | |
13674 | const int annex_size = 9; | |
13675 | ||
224c3ddb | 13676 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13677 | xsnprintf (annex, annex_size, "%x", pid); |
13678 | } | |
13679 | ||
f6ac5f3d | 13680 | filename = target_read_stralloc (target_stack, |
c78fa86a GB |
13681 | TARGET_OBJECT_EXEC_FILE, annex); |
13682 | ||
9018be22 | 13683 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
13684 | } |
13685 | ||
750ce8d1 YQ |
13686 | /* Implement the to_can_do_single_step target_ops method. */ |
13687 | ||
f6ac5f3d PA |
13688 | int |
13689 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
13690 | { |
13691 | /* We can only tell whether target supports single step or not by | |
13692 | supported s and S vCont actions if the stub supports vContSupported | |
13693 | feature. If the stub doesn't support vContSupported feature, | |
13694 | we have conservatively to think target doesn't supports single | |
13695 | step. */ | |
13696 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13697 | { | |
13698 | struct remote_state *rs = get_remote_state (); | |
13699 | ||
13700 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13701 | remote_vcont_probe (rs); | |
13702 | ||
13703 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13704 | } | |
13705 | else | |
13706 | return 0; | |
13707 | } | |
13708 | ||
3a00c802 PA |
13709 | /* Implementation of the to_execution_direction method for the remote |
13710 | target. */ | |
13711 | ||
f6ac5f3d PA |
13712 | enum exec_direction_kind |
13713 | remote_target::execution_direction () | |
3a00c802 PA |
13714 | { |
13715 | struct remote_state *rs = get_remote_state (); | |
13716 | ||
13717 | return rs->last_resume_exec_dir; | |
13718 | } | |
13719 | ||
f6327dcb KB |
13720 | /* Return pointer to the thread_info struct which corresponds to |
13721 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13722 | ||
f6ac5f3d PA |
13723 | thread_info * |
13724 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
13725 | int handle_len, | |
13726 | inferior *inf) | |
f6327dcb KB |
13727 | { |
13728 | struct thread_info *tp; | |
13729 | ||
13730 | ALL_NON_EXITED_THREADS (tp) | |
13731 | { | |
7aabaf9d | 13732 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
13733 | |
13734 | if (tp->inf == inf && priv != NULL) | |
13735 | { | |
7aabaf9d | 13736 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 13737 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
13738 | handle_len, priv->thread_handle.size ()); |
13739 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
13740 | handle_len) == 0) |
13741 | return tp; | |
13742 | } | |
13743 | } | |
13744 | ||
13745 | return NULL; | |
13746 | } | |
13747 | ||
f6ac5f3d PA |
13748 | int |
13749 | remote_target::can_async_p () | |
6426a772 | 13750 | { |
5d93a237 TT |
13751 | struct remote_state *rs = get_remote_state (); |
13752 | ||
3015c064 SM |
13753 | /* We don't go async if the user has explicitly prevented it with the |
13754 | "maint set target-async" command. */ | |
c6ebd6cf | 13755 | if (!target_async_permitted) |
75c99385 PA |
13756 | return 0; |
13757 | ||
23860348 | 13758 | /* We're async whenever the serial device is. */ |
5d93a237 | 13759 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13760 | } |
13761 | ||
f6ac5f3d PA |
13762 | int |
13763 | remote_target::is_async_p () | |
6426a772 | 13764 | { |
5d93a237 TT |
13765 | struct remote_state *rs = get_remote_state (); |
13766 | ||
c6ebd6cf | 13767 | if (!target_async_permitted) |
75c99385 PA |
13768 | /* We only enable async when the user specifically asks for it. */ |
13769 | return 0; | |
13770 | ||
23860348 | 13771 | /* We're async whenever the serial device is. */ |
5d93a237 | 13772 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13773 | } |
13774 | ||
2acceee2 JM |
13775 | /* Pass the SERIAL event on and up to the client. One day this code |
13776 | will be able to delay notifying the client of an event until the | |
23860348 | 13777 | point where an entire packet has been received. */ |
2acceee2 | 13778 | |
2acceee2 JM |
13779 | static serial_event_ftype remote_async_serial_handler; |
13780 | ||
6426a772 | 13781 | static void |
819cc324 | 13782 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13783 | { |
2acceee2 JM |
13784 | /* Don't propogate error information up to the client. Instead let |
13785 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13786 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13787 | } |
13788 | ||
74531fed PA |
13789 | static void |
13790 | remote_async_inferior_event_handler (gdb_client_data data) | |
13791 | { | |
13792 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13793 | } | |
13794 | ||
f6ac5f3d PA |
13795 | void |
13796 | remote_target::async (int enable) | |
2acceee2 | 13797 | { |
5d93a237 TT |
13798 | struct remote_state *rs = get_remote_state (); |
13799 | ||
6a3753b3 | 13800 | if (enable) |
2acceee2 | 13801 | { |
88b496c3 | 13802 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13803 | |
13804 | /* If there are pending events in the stop reply queue tell the | |
13805 | event loop to process them. */ | |
13806 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13807 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13808 | /* For simplicity, below we clear the pending events token |
13809 | without remembering whether it is marked, so here we always | |
13810 | mark it. If there's actually no pending notification to | |
13811 | process, this ends up being a no-op (other than a spurious | |
13812 | event-loop wakeup). */ | |
13813 | if (target_is_non_stop_p ()) | |
13814 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13815 | } |
13816 | else | |
b7d2e916 PA |
13817 | { |
13818 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13819 | /* If the core is disabling async, it doesn't want to be |
13820 | disturbed with target events. Clear all async event sources | |
13821 | too. */ | |
b7d2e916 | 13822 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13823 | if (target_is_non_stop_p ()) |
13824 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13825 | } |
6426a772 JM |
13826 | } |
13827 | ||
65706a29 PA |
13828 | /* Implementation of the to_thread_events method. */ |
13829 | ||
f6ac5f3d PA |
13830 | void |
13831 | remote_target::thread_events (int enable) | |
65706a29 PA |
13832 | { |
13833 | struct remote_state *rs = get_remote_state (); | |
13834 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13835 | |
13836 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13837 | return; | |
13838 | ||
13839 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13840 | putpkt (rs->buf); | |
13841 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13842 | ||
13843 | switch (packet_ok (rs->buf, | |
13844 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13845 | { | |
13846 | case PACKET_OK: | |
13847 | if (strcmp (rs->buf, "OK") != 0) | |
13848 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13849 | break; | |
13850 | case PACKET_ERROR: | |
13851 | warning (_("Remote failure reply: %s"), rs->buf); | |
13852 | break; | |
13853 | case PACKET_UNKNOWN: | |
13854 | break; | |
13855 | } | |
13856 | } | |
13857 | ||
5a2468f5 | 13858 | static void |
981a3fb3 | 13859 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 13860 | { |
635c7e8a | 13861 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13862 | } |
13863 | ||
d471ea57 | 13864 | static void |
981a3fb3 | 13865 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 13866 | { |
37a105a1 | 13867 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13868 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13869 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13870 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13871 | |
2e783024 | 13872 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13873 | for (; list != NULL; list = list->next) |
13874 | if (strcmp (list->name, "Z-packet") == 0) | |
13875 | continue; | |
427c3a89 DJ |
13876 | else if (list->type == not_set_cmd) |
13877 | /* Alias commands are exactly like the original, except they | |
13878 | don't have the normal type. */ | |
13879 | continue; | |
13880 | else | |
37a105a1 | 13881 | { |
2e783024 | 13882 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13883 | |
112e8700 SM |
13884 | uiout->field_string ("name", list->name); |
13885 | uiout->text (": "); | |
427c3a89 | 13886 | if (list->type == show_cmd) |
f5c4fcd9 | 13887 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13888 | else |
13889 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13890 | } |
d471ea57 | 13891 | } |
5a2468f5 | 13892 | |
0f71a2f6 | 13893 | |
23860348 | 13894 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13895 | static void |
13896 | remote_new_objfile (struct objfile *objfile) | |
13897 | { | |
5d93a237 TT |
13898 | struct remote_state *rs = get_remote_state (); |
13899 | ||
13900 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13901 | remote_check_symbols (); |
dc8acb97 MS |
13902 | } |
13903 | ||
00bf0b85 SS |
13904 | /* Pull all the tracepoints defined on the target and create local |
13905 | data structures representing them. We don't want to create real | |
13906 | tracepoints yet, we don't want to mess up the user's existing | |
13907 | collection. */ | |
13908 | ||
f6ac5f3d PA |
13909 | int |
13910 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 13911 | { |
00bf0b85 SS |
13912 | struct remote_state *rs = get_remote_state (); |
13913 | char *p; | |
d5551862 | 13914 | |
00bf0b85 SS |
13915 | /* Ask for a first packet of tracepoint definition. */ |
13916 | putpkt ("qTfP"); | |
13917 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13918 | p = rs->buf; | |
13919 | while (*p && *p != 'l') | |
d5551862 | 13920 | { |
00bf0b85 SS |
13921 | parse_tracepoint_definition (p, utpp); |
13922 | /* Ask for another packet of tracepoint definition. */ | |
13923 | putpkt ("qTsP"); | |
13924 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13925 | p = rs->buf; | |
d5551862 | 13926 | } |
00bf0b85 | 13927 | return 0; |
d5551862 SS |
13928 | } |
13929 | ||
f6ac5f3d PA |
13930 | int |
13931 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 13932 | { |
00bf0b85 | 13933 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13934 | char *p; |
d5551862 | 13935 | |
00bf0b85 SS |
13936 | /* Ask for a first packet of variable definition. */ |
13937 | putpkt ("qTfV"); | |
d5551862 SS |
13938 | getpkt (&rs->buf, &rs->buf_size, 0); |
13939 | p = rs->buf; | |
00bf0b85 | 13940 | while (*p && *p != 'l') |
d5551862 | 13941 | { |
00bf0b85 SS |
13942 | parse_tsv_definition (p, utsvp); |
13943 | /* Ask for another packet of variable definition. */ | |
13944 | putpkt ("qTsV"); | |
d5551862 SS |
13945 | getpkt (&rs->buf, &rs->buf_size, 0); |
13946 | p = rs->buf; | |
13947 | } | |
00bf0b85 | 13948 | return 0; |
d5551862 SS |
13949 | } |
13950 | ||
c1e36e3e PA |
13951 | /* The "set/show range-stepping" show hook. */ |
13952 | ||
13953 | static void | |
13954 | show_range_stepping (struct ui_file *file, int from_tty, | |
13955 | struct cmd_list_element *c, | |
13956 | const char *value) | |
13957 | { | |
13958 | fprintf_filtered (file, | |
13959 | _("Debugger's willingness to use range stepping " | |
13960 | "is %s.\n"), value); | |
13961 | } | |
13962 | ||
13963 | /* The "set/show range-stepping" set hook. */ | |
13964 | ||
13965 | static void | |
eb4c3f4a | 13966 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
13967 | struct cmd_list_element *c) |
13968 | { | |
5d93a237 TT |
13969 | struct remote_state *rs = get_remote_state (); |
13970 | ||
c1e36e3e PA |
13971 | /* Whene enabling, check whether range stepping is actually |
13972 | supported by the target, and warn if not. */ | |
13973 | if (use_range_stepping) | |
13974 | { | |
5d93a237 | 13975 | if (rs->remote_desc != NULL) |
c1e36e3e | 13976 | { |
4082afcc | 13977 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13978 | remote_vcont_probe (rs); |
13979 | ||
4082afcc | 13980 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13981 | && rs->supports_vCont.r) |
13982 | return; | |
13983 | } | |
13984 | ||
13985 | warning (_("Range stepping is not supported by the current target")); | |
13986 | } | |
13987 | } | |
13988 | ||
c906108c | 13989 | void |
fba45db2 | 13990 | _initialize_remote (void) |
c906108c | 13991 | { |
9a7071a8 | 13992 | struct cmd_list_element *cmd; |
6f937416 | 13993 | const char *cmd_name; |
ea9c271d | 13994 | |
0f71a2f6 | 13995 | /* architecture specific data */ |
2bc416ba | 13996 | remote_gdbarch_data_handle = |
23860348 | 13997 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13998 | remote_g_packet_data_handle = |
13999 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14000 | |
94585166 DB |
14001 | remote_pspace_data |
14002 | = register_program_space_data_with_cleanup (NULL, | |
14003 | remote_pspace_data_cleanup); | |
14004 | ||
ea9c271d DJ |
14005 | /* Initialize the per-target state. At the moment there is only one |
14006 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
14007 | time. */ |
14008 | remote_state = new_remote_state (); | |
ea9c271d | 14009 | |
c906108c | 14010 | add_target (&remote_ops); |
c906108c | 14011 | add_target (&extended_remote_ops); |
cce74817 | 14012 | |
dc8acb97 | 14013 | /* Hook into new objfile notification. */ |
76727919 | 14014 | gdb::observers::new_objfile.attach (remote_new_objfile); |
5f4cf0bb YQ |
14015 | /* We're no longer interested in notification events of an inferior |
14016 | when it exits. */ | |
76727919 | 14017 | gdb::observers::inferior_exit.attach (discard_pending_stop_replies); |
dc8acb97 | 14018 | |
c906108c SS |
14019 | #if 0 |
14020 | init_remote_threadtests (); | |
14021 | #endif | |
14022 | ||
722247f1 | 14023 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 14024 | /* set/show remote ... */ |
d471ea57 | 14025 | |
1bedd215 | 14026 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
14027 | Remote protocol specific variables\n\ |
14028 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14029 | the packets being used"), |
cff3e48b | 14030 | &remote_set_cmdlist, "set remote ", |
23860348 | 14031 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14032 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
14033 | Remote protocol specific variables\n\ |
14034 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14035 | the packets being used"), |
cff3e48b | 14036 | &remote_show_cmdlist, "show remote ", |
23860348 | 14037 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14038 | |
1a966eab AC |
14039 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14040 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14041 | Argument is a single section name (default: all loaded sections).\n\ |
14042 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14043 | &cmdlist); |
14044 | ||
1a966eab AC |
14045 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14046 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14047 | maintenance packet TEXT\n\ |
14048 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14049 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14050 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14051 | terminating `#' character and checksum."), |
c906108c SS |
14052 | &maintenancelist); |
14053 | ||
7915a72c AC |
14054 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14055 | Set whether to send break if interrupted."), _("\ | |
14056 | Show whether to send break if interrupted."), _("\ | |
14057 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14058 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14059 | &setlist, &showlist); |
9a7071a8 JB |
14060 | cmd_name = "remotebreak"; |
14061 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14062 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14063 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14064 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14065 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14066 | ||
14067 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14068 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14069 | _("\ | |
9a7071a8 JB |
14070 | Set interrupt sequence to remote target."), _("\ |
14071 | Show interrupt sequence to remote target."), _("\ | |
14072 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14073 | NULL, show_interrupt_sequence, | |
14074 | &remote_set_cmdlist, | |
14075 | &remote_show_cmdlist); | |
14076 | ||
14077 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14078 | &interrupt_on_connect, _("\ | |
14079 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14080 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14081 | If set, interrupt sequence is sent to remote target."), | |
14082 | NULL, NULL, | |
14083 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14084 | |
23860348 | 14085 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14086 | |
1a966eab AC |
14087 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14088 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14089 | &setlist); |
1a966eab AC |
14090 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14091 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14092 | &showlist); |
14093 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14094 | set_memory_write_packet_size, _("\ |
14095 | Set the maximum number of bytes per memory-write packet.\n\ | |
14096 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14097 | default packet size. The actual limit is further reduced\n\ | |
14098 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14099 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14100 | &remote_set_cmdlist); |
14101 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14102 | set_memory_read_packet_size, _("\ |
14103 | Set the maximum number of bytes per memory-read packet.\n\ | |
14104 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14105 | default packet size. The actual limit is further reduced\n\ | |
14106 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14107 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14108 | &remote_set_cmdlist); |
14109 | add_cmd ("memory-write-packet-size", no_class, | |
14110 | show_memory_write_packet_size, | |
1a966eab | 14111 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14112 | &remote_show_cmdlist); |
14113 | add_cmd ("memory-read-packet-size", no_class, | |
14114 | show_memory_read_packet_size, | |
1a966eab | 14115 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14116 | &remote_show_cmdlist); |
c906108c | 14117 | |
b3f42336 | 14118 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14119 | &remote_hw_watchpoint_limit, _("\ |
14120 | Set the maximum number of target hardware watchpoints."), _("\ | |
14121 | Show the maximum number of target hardware watchpoints."), _("\ | |
14122 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14123 | NULL, NULL, /* FIXME: i18n: The maximum |
14124 | number of target hardware | |
14125 | watchpoints is %s. */ | |
b3f42336 | 14126 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14127 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14128 | &remote_hw_watchpoint_length_limit, _("\ | |
14129 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14130 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14131 | Specify a negative limit for unlimited."), | |
14132 | NULL, NULL, /* FIXME: i18n: The maximum | |
14133 | length (in bytes) of a target | |
14134 | hardware watchpoint is %s. */ | |
14135 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14136 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14137 | &remote_hw_breakpoint_limit, _("\ |
14138 | Set the maximum number of target hardware breakpoints."), _("\ | |
14139 | Show the maximum number of target hardware breakpoints."), _("\ | |
14140 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14141 | NULL, NULL, /* FIXME: i18n: The maximum |
14142 | number of target hardware | |
14143 | breakpoints is %s. */ | |
b3f42336 | 14144 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14145 | |
1b493192 PA |
14146 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14147 | &remote_address_size, _("\ | |
4d28ad1e AC |
14148 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14149 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14150 | NULL, |
14151 | NULL, /* FIXME: i18n: */ | |
14152 | &setlist, &showlist); | |
c906108c | 14153 | |
ca4f7f8b PA |
14154 | init_all_packet_configs (); |
14155 | ||
444abaca | 14156 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14157 | "X", "binary-download", 1); |
0f71a2f6 | 14158 | |
444abaca | 14159 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14160 | "vCont", "verbose-resume", 0); |
506fb367 | 14161 | |
89be2091 DJ |
14162 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14163 | "QPassSignals", "pass-signals", 0); | |
14164 | ||
82075af2 JS |
14165 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14166 | "QCatchSyscalls", "catch-syscalls", 0); | |
14167 | ||
9b224c5e PA |
14168 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14169 | "QProgramSignals", "program-signals", 0); | |
14170 | ||
bc3b087d SDJ |
14171 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14172 | "QSetWorkingDir", "set-working-dir", 0); | |
14173 | ||
aefd8b33 SDJ |
14174 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14175 | "QStartupWithShell", "startup-with-shell", 0); | |
14176 | ||
0a2dde4a SDJ |
14177 | add_packet_config_cmd (&remote_protocol_packets |
14178 | [PACKET_QEnvironmentHexEncoded], | |
14179 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14180 | 0); | |
14181 | ||
14182 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14183 | "QEnvironmentReset", "environment-reset", | |
14184 | 0); | |
14185 | ||
14186 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14187 | "QEnvironmentUnset", "environment-unset", | |
14188 | 0); | |
14189 | ||
444abaca | 14190 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14191 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14192 | |
444abaca | 14193 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14194 | "P", "set-register", 1); |
d471ea57 | 14195 | |
444abaca | 14196 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14197 | "p", "fetch-register", 1); |
b96ec7ac | 14198 | |
444abaca | 14199 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14200 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14201 | |
444abaca | 14202 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14203 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14204 | |
444abaca | 14205 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14206 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14207 | |
444abaca | 14208 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14209 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14210 | |
444abaca | 14211 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14212 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14213 | |
0876f84a DJ |
14214 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14215 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14216 | |
c78fa86a GB |
14217 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14218 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14219 | ||
23181151 DJ |
14220 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14221 | "qXfer:features:read", "target-features", 0); | |
14222 | ||
cfa9d6d9 DJ |
14223 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14224 | "qXfer:libraries:read", "library-info", 0); | |
14225 | ||
2268b414 JK |
14226 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14227 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14228 | ||
fd79ecee DJ |
14229 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14230 | "qXfer:memory-map:read", "memory-map", 0); | |
14231 | ||
0e7f50da UW |
14232 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14233 | "qXfer:spu:read", "read-spu-object", 0); | |
14234 | ||
14235 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14236 | "qXfer:spu:write", "write-spu-object", 0); | |
14237 | ||
07e059b5 VP |
14238 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14239 | "qXfer:osdata:read", "osdata", 0); | |
14240 | ||
dc146f7c VP |
14241 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14242 | "qXfer:threads:read", "threads", 0); | |
14243 | ||
4aa995e1 PA |
14244 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14245 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14246 | ||
14247 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14248 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14249 | ||
b3b9301e PA |
14250 | add_packet_config_cmd |
14251 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14252 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14253 | |
169081d0 TG |
14254 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14255 | "qXfer:uib:read", "unwind-info-block", 0); | |
14256 | ||
444abaca | 14257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14258 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14259 | 0); |
14260 | ||
711e434b PM |
14261 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14262 | "qGetTIBAddr", "get-thread-information-block-address", | |
14263 | 0); | |
14264 | ||
40ab02ce MS |
14265 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14266 | "bc", "reverse-continue", 0); | |
14267 | ||
14268 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14269 | "bs", "reverse-step", 0); | |
14270 | ||
be2a5f71 DJ |
14271 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14272 | "qSupported", "supported-packets", 0); | |
14273 | ||
08388c79 DE |
14274 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14275 | "qSearch:memory", "search-memory", 0); | |
14276 | ||
bd3eecc3 PA |
14277 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14278 | "qTStatus", "trace-status", 0); | |
14279 | ||
15a201c8 GB |
14280 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14281 | "vFile:setfs", "hostio-setfs", 0); | |
14282 | ||
a6b151f1 DJ |
14283 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14284 | "vFile:open", "hostio-open", 0); | |
14285 | ||
14286 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14287 | "vFile:pread", "hostio-pread", 0); | |
14288 | ||
14289 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14290 | "vFile:pwrite", "hostio-pwrite", 0); | |
14291 | ||
14292 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14293 | "vFile:close", "hostio-close", 0); | |
14294 | ||
14295 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14296 | "vFile:unlink", "hostio-unlink", 0); | |
14297 | ||
b9e7b9c3 UW |
14298 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14299 | "vFile:readlink", "hostio-readlink", 0); | |
14300 | ||
0a93529c GB |
14301 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14302 | "vFile:fstat", "hostio-fstat", 0); | |
14303 | ||
2d717e4f DJ |
14304 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14305 | "vAttach", "attach", 0); | |
14306 | ||
14307 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14308 | "vRun", "run", 0); | |
14309 | ||
a6f3e723 SL |
14310 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14311 | "QStartNoAckMode", "noack", 0); | |
14312 | ||
82f73884 PA |
14313 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14314 | "vKill", "kill", 0); | |
14315 | ||
0b16c5cf PA |
14316 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14317 | "qAttached", "query-attached", 0); | |
14318 | ||
782b2b07 | 14319 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14320 | "ConditionalTracepoints", |
14321 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14322 | |
14323 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14324 | "ConditionalBreakpoints", | |
14325 | "conditional-breakpoints", 0); | |
14326 | ||
d3ce09f5 SS |
14327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14328 | "BreakpointCommands", | |
14329 | "breakpoint-commands", 0); | |
14330 | ||
7a697b8d SS |
14331 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14332 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14333 | |
409873ef SS |
14334 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14335 | "TracepointSource", "TracepointSource", 0); | |
14336 | ||
d914c394 SS |
14337 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14338 | "QAllow", "allow", 0); | |
14339 | ||
0fb4aa4b PA |
14340 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14341 | "StaticTracepoints", "static-tracepoints", 0); | |
14342 | ||
1e4d1764 YQ |
14343 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14344 | "InstallInTrace", "install-in-trace", 0); | |
14345 | ||
0fb4aa4b PA |
14346 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14347 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14348 | ||
78d85199 YQ |
14349 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14350 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14351 | ||
03583c20 UW |
14352 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14353 | "QDisableRandomization", "disable-randomization", 0); | |
14354 | ||
d1feda86 YQ |
14355 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14356 | "QAgent", "agent", 0); | |
14357 | ||
f6f899bf HAQ |
14358 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14359 | "QTBuffer:size", "trace-buffer-size", 0); | |
14360 | ||
9accd112 MM |
14361 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14362 | "Qbtrace:off", "disable-btrace", 0); | |
14363 | ||
14364 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14365 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14366 | ||
14367 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14368 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14369 | |
14370 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14371 | "qXfer:btrace", "read-btrace", 0); | |
14372 | ||
f4abbc16 MM |
14373 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14374 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14375 | ||
d33501a5 MM |
14376 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14377 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14378 | ||
73b8c1fd PA |
14379 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14380 | "multiprocess-feature", "multiprocess-feature", 0); | |
14381 | ||
f7e6eed5 PA |
14382 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14383 | "swbreak-feature", "swbreak-feature", 0); | |
14384 | ||
14385 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14386 | "hwbreak-feature", "hwbreak-feature", 0); | |
14387 | ||
89245bc0 DB |
14388 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14389 | "fork-event-feature", "fork-event-feature", 0); | |
14390 | ||
14391 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14392 | "vfork-event-feature", "vfork-event-feature", 0); | |
14393 | ||
b20a6524 MM |
14394 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14395 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14396 | ||
750ce8d1 YQ |
14397 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14398 | "vContSupported", "verbose-resume-supported", 0); | |
14399 | ||
94585166 DB |
14400 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14401 | "exec-event-feature", "exec-event-feature", 0); | |
14402 | ||
de979965 PA |
14403 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14404 | "vCtrlC", "ctrl-c", 0); | |
14405 | ||
65706a29 PA |
14406 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14407 | "QThreadEvents", "thread-events", 0); | |
14408 | ||
f2faf941 PA |
14409 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14410 | "N stop reply", "no-resumed-stop-reply", 0); | |
14411 | ||
0b736949 DB |
14412 | /* Assert that we've registered "set remote foo-packet" commands |
14413 | for all packet configs. */ | |
ca4f7f8b PA |
14414 | { |
14415 | int i; | |
14416 | ||
14417 | for (i = 0; i < PACKET_MAX; i++) | |
14418 | { | |
14419 | /* Ideally all configs would have a command associated. Some | |
14420 | still don't though. */ | |
14421 | int excepted; | |
14422 | ||
14423 | switch (i) | |
14424 | { | |
14425 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14426 | case PACKET_EnableDisableTracepoints_feature: |
14427 | case PACKET_tracenz_feature: | |
14428 | case PACKET_DisconnectedTracing_feature: | |
14429 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14430 | case PACKET_qCRC: |
14431 | /* Additions to this list need to be well justified: | |
14432 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14433 | excepted = 1; |
14434 | break; | |
14435 | default: | |
14436 | excepted = 0; | |
14437 | break; | |
14438 | } | |
14439 | ||
14440 | /* This catches both forgetting to add a config command, and | |
14441 | forgetting to remove a packet from the exception list. */ | |
14442 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14443 | } | |
14444 | } | |
14445 | ||
37a105a1 DJ |
14446 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14447 | Z sub-packet has its own set and show commands, but users may | |
14448 | have sets to this variable in their .gdbinit files (or in their | |
14449 | documentation). */ | |
e9e68a56 | 14450 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14451 | &remote_Z_packet_detect, _("\ |
14452 | Set use of remote protocol `Z' packets"), _("\ | |
14453 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14454 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14455 | packets."), |
e9e68a56 | 14456 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14457 | show_remote_protocol_Z_packet_cmd, |
14458 | /* FIXME: i18n: Use of remote protocol | |
14459 | `Z' packets is %s. */ | |
e9e68a56 | 14460 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14461 | |
a6b151f1 DJ |
14462 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14463 | Manipulate files on the remote system\n\ | |
14464 | Transfer files to and from the remote target system."), | |
14465 | &remote_cmdlist, "remote ", | |
14466 | 0 /* allow-unknown */, &cmdlist); | |
14467 | ||
14468 | add_cmd ("put", class_files, remote_put_command, | |
14469 | _("Copy a local file to the remote system."), | |
14470 | &remote_cmdlist); | |
14471 | ||
14472 | add_cmd ("get", class_files, remote_get_command, | |
14473 | _("Copy a remote file to the local system."), | |
14474 | &remote_cmdlist); | |
14475 | ||
14476 | add_cmd ("delete", class_files, remote_delete_command, | |
14477 | _("Delete a remote file."), | |
14478 | &remote_cmdlist); | |
14479 | ||
2d717e4f | 14480 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14481 | &remote_exec_file_var, _("\ |
2d717e4f | 14482 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14483 | Show the remote pathname for \"run\""), NULL, |
14484 | set_remote_exec_file, | |
14485 | show_remote_exec_file, | |
14486 | &remote_set_cmdlist, | |
14487 | &remote_show_cmdlist); | |
2d717e4f | 14488 | |
c1e36e3e PA |
14489 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14490 | &use_range_stepping, _("\ | |
14491 | Enable or disable range stepping."), _("\ | |
14492 | Show whether target-assisted range stepping is enabled."), _("\ | |
14493 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14494 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14495 | of issuing multiple single-steps. This speeds up source level\n\ | |
14496 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14497 | stepping is supported by the target. The default is on."), | |
14498 | set_range_stepping, | |
14499 | show_range_stepping, | |
14500 | &setlist, | |
14501 | &showlist); | |
14502 | ||
449092f6 CV |
14503 | /* Eventually initialize fileio. See fileio.c */ |
14504 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14505 | |
ba348170 | 14506 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14507 | special ptids with it set to != 0. */ |
ba348170 PA |
14508 | magic_null_ptid = ptid_build (42000, -1, 1); |
14509 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14510 | any_thread_ptid = ptid_build (42000, 0, 1); | |
c906108c | 14511 | } |