Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1988-2018 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
438e1e42 | 50 | #include "gdb_sys_time.h" |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
2ec845e7 | 75 | #include "common/scoped_restore.h" |
0a2dde4a | 76 | #include "environ.h" |
f6327dcb | 77 | #include "common/byte-vector.h" |
9d6eea31 | 78 | #include <unordered_map> |
35b1e5cc | 79 | |
f6ac5f3d PA |
80 | /* The remote target. */ |
81 | ||
d9f719f1 PA |
82 | static const char remote_doc[] = N_("\ |
83 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
84 | Specify the serial device it is connected to\n\ | |
85 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
86 | ||
87 | static const target_info remote_target_info = { | |
88 | "remote", | |
89 | N_("Remote serial target in gdb-specific protocol"), | |
90 | remote_doc | |
91 | }; | |
92 | ||
f6ac5f3d PA |
93 | class remote_target : public target_ops |
94 | { | |
95 | public: | |
96 | remote_target () | |
97 | { | |
98 | to_stratum = process_stratum; | |
99 | } | |
100 | ||
d9f719f1 PA |
101 | const target_info &info () const override |
102 | { return remote_target_info; } | |
f6ac5f3d PA |
103 | |
104 | thread_control_capabilities get_thread_control_capabilities () override | |
105 | { return tc_schedlock; } | |
106 | ||
d9f719f1 PA |
107 | /* Open a remote connection. */ |
108 | static void open (const char *, int); | |
109 | ||
f6ac5f3d PA |
110 | void close () override; |
111 | ||
112 | void detach (inferior *, int) override; | |
113 | void disconnect (const char *, int) override; | |
114 | ||
115 | void commit_resume () override; | |
116 | void resume (ptid_t, int, enum gdb_signal) override; | |
117 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
118 | ||
119 | void fetch_registers (struct regcache *, int) override; | |
120 | void store_registers (struct regcache *, int) override; | |
121 | void prepare_to_store (struct regcache *) override; | |
122 | ||
123 | void files_info () override; | |
124 | ||
125 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
126 | ||
127 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
128 | enum remove_bp_reason) override; | |
129 | ||
130 | ||
57810aa7 PA |
131 | bool stopped_by_sw_breakpoint () override; |
132 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 133 | |
57810aa7 | 134 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 135 | |
57810aa7 | 136 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 137 | |
57810aa7 | 138 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 139 | |
57810aa7 | 140 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 141 | |
57810aa7 | 142 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
143 | |
144 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
145 | ||
146 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
147 | ||
148 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
149 | ||
150 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
151 | ||
152 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
153 | struct expression *) override; | |
154 | ||
155 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
156 | struct expression *) override; | |
157 | ||
158 | void kill () override; | |
159 | ||
160 | void load (const char *, int) override; | |
161 | ||
162 | void mourn_inferior () override; | |
163 | ||
164 | void pass_signals (int, unsigned char *) override; | |
165 | ||
166 | int set_syscall_catchpoint (int, bool, int, | |
167 | gdb::array_view<const int>) override; | |
168 | ||
169 | void program_signals (int, unsigned char *) override; | |
170 | ||
57810aa7 | 171 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
172 | |
173 | const char *thread_name (struct thread_info *) override; | |
174 | ||
175 | void update_thread_list () override; | |
176 | ||
177 | const char *pid_to_str (ptid_t) override; | |
178 | ||
179 | const char *extra_thread_info (struct thread_info *) override; | |
180 | ||
181 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
182 | ||
183 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
184 | int handle_len, | |
185 | inferior *inf) override; | |
186 | ||
187 | void stop (ptid_t) override; | |
188 | ||
189 | void interrupt () override; | |
190 | ||
191 | void pass_ctrlc () override; | |
192 | ||
193 | enum target_xfer_status xfer_partial (enum target_object object, | |
194 | const char *annex, | |
195 | gdb_byte *readbuf, | |
196 | const gdb_byte *writebuf, | |
197 | ULONGEST offset, ULONGEST len, | |
198 | ULONGEST *xfered_len) override; | |
199 | ||
200 | ULONGEST get_memory_xfer_limit () override; | |
201 | ||
202 | void rcmd (const char *command, struct ui_file *output) override; | |
203 | ||
204 | char *pid_to_exec_file (int pid) override; | |
205 | ||
206 | void log_command (const char *cmd) override | |
207 | { | |
208 | serial_log_command (this, cmd); | |
209 | } | |
210 | ||
211 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
212 | CORE_ADDR load_module_addr, | |
213 | CORE_ADDR offset) override; | |
214 | ||
57810aa7 PA |
215 | bool has_all_memory () override { return default_child_has_all_memory (); } |
216 | bool has_memory () override { return default_child_has_memory (); } | |
217 | bool has_stack () override { return default_child_has_stack (); } | |
218 | bool has_registers () override { return default_child_has_registers (); } | |
219 | bool has_execution (ptid_t ptid) override { return default_child_has_execution (ptid); } | |
f6ac5f3d | 220 | |
57810aa7 | 221 | bool can_execute_reverse () override; |
f6ac5f3d PA |
222 | |
223 | std::vector<mem_region> memory_map () override; | |
224 | ||
225 | void flash_erase (ULONGEST address, LONGEST length) override; | |
226 | ||
227 | void flash_done () override; | |
228 | ||
229 | const struct target_desc *read_description () override; | |
230 | ||
231 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
232 | const gdb_byte *pattern, ULONGEST pattern_len, | |
233 | CORE_ADDR *found_addrp) override; | |
234 | ||
57810aa7 | 235 | bool can_async_p () override; |
f6ac5f3d | 236 | |
57810aa7 | 237 | bool is_async_p () override; |
f6ac5f3d PA |
238 | |
239 | void async (int) override; | |
240 | ||
241 | void thread_events (int) override; | |
242 | ||
243 | int can_do_single_step () override; | |
244 | ||
245 | void terminal_inferior () override; | |
246 | ||
247 | void terminal_ours () override; | |
248 | ||
57810aa7 | 249 | bool supports_non_stop () override; |
f6ac5f3d | 250 | |
57810aa7 | 251 | bool supports_multi_process () override; |
f6ac5f3d | 252 | |
57810aa7 | 253 | bool supports_disable_randomization () override; |
f6ac5f3d | 254 | |
57810aa7 | 255 | bool filesystem_is_local () override; |
f6ac5f3d PA |
256 | |
257 | ||
258 | int fileio_open (struct inferior *inf, const char *filename, | |
259 | int flags, int mode, int warn_if_slow, | |
260 | int *target_errno) override; | |
261 | ||
262 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
263 | ULONGEST offset, int *target_errno) override; | |
264 | ||
265 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
266 | ULONGEST offset, int *target_errno) override; | |
267 | ||
268 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
269 | ||
270 | int fileio_close (int fd, int *target_errno) override; | |
271 | ||
272 | int fileio_unlink (struct inferior *inf, | |
273 | const char *filename, | |
274 | int *target_errno) override; | |
275 | ||
276 | gdb::optional<std::string> | |
277 | fileio_readlink (struct inferior *inf, | |
278 | const char *filename, | |
279 | int *target_errno) override; | |
280 | ||
57810aa7 | 281 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 282 | |
57810aa7 | 283 | bool supports_string_tracing () override; |
f6ac5f3d | 284 | |
57810aa7 | 285 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 286 | |
57810aa7 | 287 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
288 | |
289 | void trace_init () override; | |
290 | ||
291 | void download_tracepoint (struct bp_location *location) override; | |
292 | ||
57810aa7 | 293 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
294 | |
295 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
296 | ||
297 | void enable_tracepoint (struct bp_location *location) override; | |
298 | ||
299 | void disable_tracepoint (struct bp_location *location) override; | |
300 | ||
301 | void trace_set_readonly_regions () override; | |
302 | ||
303 | void trace_start () override; | |
304 | ||
305 | int get_trace_status (struct trace_status *ts) override; | |
306 | ||
307 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
308 | override; | |
309 | ||
310 | void trace_stop () override; | |
311 | ||
312 | int trace_find (enum trace_find_type type, int num, | |
313 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
314 | ||
57810aa7 | 315 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
316 | |
317 | int save_trace_data (const char *filename) override; | |
318 | ||
319 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
320 | ||
321 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
322 | ||
323 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
324 | ||
325 | int get_min_fast_tracepoint_insn_len () override; | |
326 | ||
327 | void set_disconnected_tracing (int val) override; | |
328 | ||
329 | void set_circular_trace_buffer (int val) override; | |
330 | ||
331 | void set_trace_buffer_size (LONGEST val) override; | |
332 | ||
57810aa7 PA |
333 | bool set_trace_notes (const char *user, const char *notes, |
334 | const char *stopnotes) override; | |
f6ac5f3d PA |
335 | |
336 | int core_of_thread (ptid_t ptid) override; | |
337 | ||
338 | int verify_memory (const gdb_byte *data, | |
339 | CORE_ADDR memaddr, ULONGEST size) override; | |
340 | ||
341 | ||
57810aa7 | 342 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
343 | |
344 | void set_permissions () override; | |
345 | ||
346 | bool static_tracepoint_marker_at (CORE_ADDR, | |
347 | struct static_tracepoint_marker *marker) | |
348 | override; | |
349 | ||
350 | std::vector<static_tracepoint_marker> | |
351 | static_tracepoint_markers_by_strid (const char *id) override; | |
352 | ||
353 | traceframe_info_up traceframe_info () override; | |
354 | ||
57810aa7 PA |
355 | bool use_agent (bool use) override; |
356 | bool can_use_agent () override; | |
f6ac5f3d PA |
357 | |
358 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
359 | const struct btrace_config *conf) override; | |
360 | ||
361 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
362 | ||
363 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
364 | ||
365 | enum btrace_error read_btrace (struct btrace_data *data, | |
366 | struct btrace_target_info *btinfo, | |
367 | enum btrace_read_type type) override; | |
368 | ||
369 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 370 | bool augmented_libraries_svr4_read () override; |
f6ac5f3d PA |
371 | int follow_fork (int, int) override; |
372 | void follow_exec (struct inferior *, char *) override; | |
373 | int insert_fork_catchpoint (int) override; | |
374 | int remove_fork_catchpoint (int) override; | |
375 | int insert_vfork_catchpoint (int) override; | |
376 | int remove_vfork_catchpoint (int) override; | |
377 | int insert_exec_catchpoint (int) override; | |
378 | int remove_exec_catchpoint (int) override; | |
379 | enum exec_direction_kind execution_direction () override; | |
380 | ||
381 | protected: | |
d9f719f1 | 382 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d PA |
383 | void start_remote (int from_tty, int extended_p); |
384 | }; | |
385 | ||
d9f719f1 PA |
386 | static const target_info extended_remote_target_info = { |
387 | "extended-remote", | |
388 | N_("Extended remote serial target in gdb-specific protocol"), | |
389 | remote_doc | |
390 | }; | |
391 | ||
f6ac5f3d PA |
392 | /* Set up the extended remote target by extending the standard remote |
393 | target and adding to it. */ | |
394 | ||
395 | class extended_remote_target final : public remote_target | |
396 | { | |
397 | public: | |
d9f719f1 PA |
398 | const target_info &info () const override |
399 | { return extended_remote_target_info; } | |
f6ac5f3d | 400 | |
d9f719f1 PA |
401 | /* Open an extended-remote connection. */ |
402 | static void open (const char *, int); | |
f6ac5f3d PA |
403 | |
404 | bool can_create_inferior () override { return true; } | |
405 | void create_inferior (const char *, const std::string &, | |
406 | char **, int) override; | |
407 | ||
408 | void detach (inferior *, int) override; | |
409 | ||
410 | bool can_attach () override { return true; } | |
411 | void attach (const char *, int) override; | |
412 | ||
413 | void post_attach (int) override; | |
57810aa7 | 414 | bool supports_disable_randomization () override; |
f6ac5f3d PA |
415 | }; |
416 | ||
94585166 DB |
417 | /* Per-program-space data key. */ |
418 | static const struct program_space_data *remote_pspace_data; | |
419 | ||
420 | /* The variable registered as the control variable used by the | |
421 | remote exec-file commands. While the remote exec-file setting is | |
422 | per-program-space, the set/show machinery uses this as the | |
423 | location of the remote exec-file value. */ | |
424 | static char *remote_exec_file_var; | |
425 | ||
6765f3e5 DJ |
426 | /* The size to align memory write packets, when practical. The protocol |
427 | does not guarantee any alignment, and gdb will generate short | |
428 | writes and unaligned writes, but even as a best-effort attempt this | |
429 | can improve bulk transfers. For instance, if a write is misaligned | |
430 | relative to the target's data bus, the stub may need to make an extra | |
431 | round trip fetching data from the target. This doesn't make a | |
432 | huge difference, but it's easy to do, so we try to be helpful. | |
433 | ||
434 | The alignment chosen is arbitrary; usually data bus width is | |
435 | important here, not the possibly larger cache line size. */ | |
436 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
437 | ||
23860348 | 438 | /* Prototypes for local functions. */ |
6d820c5c | 439 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 440 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 441 | int forever, int *is_notif); |
6426a772 | 442 | |
cbb8991c DB |
443 | struct remote_state; |
444 | ||
445 | static int remote_vkill (int pid, struct remote_state *rs); | |
446 | ||
8020350c DB |
447 | static void remote_kill_k (void); |
448 | ||
a14ed312 | 449 | static int readchar (int timeout); |
c906108c | 450 | |
c33e31fd PA |
451 | static void remote_serial_write (const char *str, int len); |
452 | ||
a14ed312 | 453 | static void interrupt_query (void); |
c906108c | 454 | |
d62a8ae2 SM |
455 | static void set_general_thread (ptid_t ptid); |
456 | static void set_continue_thread (ptid_t ptid); | |
c906108c | 457 | |
a14ed312 | 458 | static void get_offsets (void); |
c906108c | 459 | |
6d820c5c DJ |
460 | static void skip_frame (void); |
461 | ||
462 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 463 | |
a14ed312 | 464 | static int hexnumlen (ULONGEST num); |
c906108c | 465 | |
a14ed312 | 466 | static int stubhex (int ch); |
c906108c | 467 | |
a14ed312 | 468 | static int hexnumstr (char *, ULONGEST); |
c906108c | 469 | |
a14ed312 | 470 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 471 | |
a14ed312 | 472 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 473 | |
baa336ce | 474 | static void print_packet (const char *); |
c906108c | 475 | |
a14ed312 | 476 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 477 | |
39f77062 | 478 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 479 | |
baa336ce | 480 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 481 | |
a14ed312 | 482 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 483 | |
5a2468f5 | 484 | struct packet_config; |
5a2468f5 | 485 | |
a14ed312 | 486 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 487 | |
bb572ddd DJ |
488 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
489 | int from_tty, | |
490 | struct cmd_list_element *c, | |
491 | const char *value); | |
492 | ||
82f73884 | 493 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
256642e8 | 494 | static ptid_t read_ptid (const char *buf, const char **obuf); |
82f73884 | 495 | |
c8d104ad PA |
496 | static void remote_query_supported (void); |
497 | ||
36d25514 | 498 | static void remote_check_symbols (void); |
c8d104ad | 499 | |
74531fed | 500 | struct stop_reply; |
74531fed | 501 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 502 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 503 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 504 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
505 | static int peek_stop_reply (ptid_t ptid); |
506 | ||
cbb8991c DB |
507 | struct threads_listing_context; |
508 | static void remove_new_fork_children (struct threads_listing_context *); | |
509 | ||
74531fed | 510 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 511 | |
d962ef82 DJ |
512 | static int remote_read_description_p (struct target_ops *target); |
513 | ||
176a6961 | 514 | static void remote_console_output (char *msg); |
dde08ee1 | 515 | |
f4abbc16 MM |
516 | static void remote_btrace_reset (void); |
517 | ||
c0272db5 TW |
518 | static void remote_btrace_maybe_reopen (void); |
519 | ||
221e1a37 PA |
520 | static int stop_reply_queue_length (void); |
521 | ||
048094ac PA |
522 | static void remote_unpush_and_throw (void); |
523 | ||
b6bb3468 PA |
524 | static struct remote_state *get_remote_state (void); |
525 | ||
a6b151f1 DJ |
526 | /* For "remote". */ |
527 | ||
528 | static struct cmd_list_element *remote_cmdlist; | |
529 | ||
bb572ddd DJ |
530 | /* For "set remote" and "show remote". */ |
531 | ||
532 | static struct cmd_list_element *remote_set_cmdlist; | |
533 | static struct cmd_list_element *remote_show_cmdlist; | |
534 | ||
d458bd84 PA |
535 | /* Stub vCont actions support. |
536 | ||
537 | Each field is a boolean flag indicating whether the stub reports | |
538 | support for the corresponding action. */ | |
539 | ||
540 | struct vCont_action_support | |
541 | { | |
542 | /* vCont;t */ | |
de44f5a7 | 543 | bool t = false; |
c1e36e3e PA |
544 | |
545 | /* vCont;r */ | |
de44f5a7 | 546 | bool r = false; |
750ce8d1 YQ |
547 | |
548 | /* vCont;s */ | |
de44f5a7 | 549 | bool s = false; |
750ce8d1 YQ |
550 | |
551 | /* vCont;S */ | |
de44f5a7 | 552 | bool S = false; |
d458bd84 PA |
553 | }; |
554 | ||
c1e36e3e PA |
555 | /* Controls whether GDB is willing to use range stepping. */ |
556 | ||
557 | static int use_range_stepping = 1; | |
558 | ||
0d031856 TT |
559 | #define OPAQUETHREADBYTES 8 |
560 | ||
561 | /* a 64 bit opaque identifier */ | |
562 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
563 | ||
564 | /* About this many threadisds fit in a packet. */ | |
565 | ||
566 | #define MAXTHREADLISTRESULTS 32 | |
567 | ||
6f8976bf YQ |
568 | /* The max number of chars in debug output. The rest of chars are |
569 | omitted. */ | |
570 | ||
571 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
572 | ||
80152258 PA |
573 | /* Data for the vFile:pread readahead cache. */ |
574 | ||
575 | struct readahead_cache | |
576 | { | |
dd194f6b PA |
577 | /* Invalidate the readahead cache. */ |
578 | void invalidate (); | |
579 | ||
580 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
581 | void invalidate_fd (int fd); | |
582 | ||
583 | /* Serve pread from the readahead cache. Returns number of bytes | |
584 | read, or 0 if the request can't be served from the cache. */ | |
585 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
586 | ||
80152258 PA |
587 | /* The file descriptor for the file that is being cached. -1 if the |
588 | cache is invalid. */ | |
de44f5a7 | 589 | int fd = -1; |
80152258 PA |
590 | |
591 | /* The offset into the file that the cache buffer corresponds | |
592 | to. */ | |
de44f5a7 | 593 | ULONGEST offset = 0; |
80152258 PA |
594 | |
595 | /* The buffer holding the cache contents. */ | |
de44f5a7 | 596 | gdb_byte *buf = nullptr; |
80152258 PA |
597 | /* The buffer's size. We try to read as much as fits into a packet |
598 | at a time. */ | |
de44f5a7 | 599 | size_t bufsize = 0; |
80152258 PA |
600 | |
601 | /* Cache hit and miss counters. */ | |
de44f5a7 PA |
602 | ULONGEST hit_count = 0; |
603 | ULONGEST miss_count = 0; | |
80152258 PA |
604 | }; |
605 | ||
43c3a0e4 PA |
606 | /* Description of the remote protocol for a given architecture. */ |
607 | ||
608 | struct packet_reg | |
609 | { | |
610 | long offset; /* Offset into G packet. */ | |
611 | long regnum; /* GDB's internal register number. */ | |
612 | LONGEST pnum; /* Remote protocol register number. */ | |
613 | int in_g_packet; /* Always part of G packet. */ | |
614 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
615 | at present. */ | |
616 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
617 | at present. */ | |
618 | }; | |
619 | ||
620 | struct remote_arch_state | |
621 | { | |
622 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
623 | ||
624 | /* Description of the remote protocol registers. */ | |
625 | long sizeof_g_packet; | |
626 | ||
627 | /* Description of the remote protocol registers indexed by REGNUM | |
628 | (making an array gdbarch_num_regs in size). */ | |
629 | std::unique_ptr<packet_reg[]> regs; | |
630 | ||
631 | /* This is the size (in chars) of the first response to the ``g'' | |
632 | packet. It is used as a heuristic when determining the maximum | |
633 | size of memory-read and memory-write packets. A target will | |
634 | typically only reserve a buffer large enough to hold the ``g'' | |
635 | packet. The size does not include packet overhead (headers and | |
636 | trailers). */ | |
637 | long actual_register_packet_size; | |
638 | ||
639 | /* This is the maximum size (in chars) of a non read/write packet. | |
640 | It is also used as a cap on the size of read/write packets. */ | |
641 | long remote_packet_size; | |
642 | }; | |
643 | ||
ea9c271d DJ |
644 | /* Description of the remote protocol state for the currently |
645 | connected target. This is per-target state, and independent of the | |
646 | selected architecture. */ | |
647 | ||
9d6eea31 | 648 | class remote_state |
ea9c271d | 649 | { |
9d6eea31 PA |
650 | public: |
651 | ||
de44f5a7 PA |
652 | remote_state (); |
653 | ~remote_state (); | |
654 | ||
9d6eea31 PA |
655 | /* Get the remote arch state for GDBARCH. */ |
656 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
657 | ||
658 | public: /* data */ | |
659 | ||
ea9c271d DJ |
660 | /* A buffer to use for incoming packets, and its current size. The |
661 | buffer is grown dynamically for larger incoming packets. | |
662 | Outgoing packets may also be constructed in this buffer. | |
663 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
664 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
665 | packets. */ | |
666 | char *buf; | |
667 | long buf_size; | |
be2a5f71 | 668 | |
1e51243a PA |
669 | /* True if we're going through initial connection setup (finding out |
670 | about the remote side's threads, relocating symbols, etc.). */ | |
de44f5a7 | 671 | bool starting_up = false; |
1e51243a | 672 | |
be2a5f71 DJ |
673 | /* If we negotiated packet size explicitly (and thus can bypass |
674 | heuristics for the largest packet size that will not overflow | |
675 | a buffer in the stub), this will be set to that packet size. | |
676 | Otherwise zero, meaning to use the guessed size. */ | |
de44f5a7 | 677 | long explicit_packet_size = 0; |
2d717e4f DJ |
678 | |
679 | /* remote_wait is normally called when the target is running and | |
680 | waits for a stop reply packet. But sometimes we need to call it | |
681 | when the target is already stopped. We can send a "?" packet | |
682 | and have remote_wait read the response. Or, if we already have | |
683 | the response, we can stash it in BUF and tell remote_wait to | |
684 | skip calling getpkt. This flag is set when BUF contains a | |
685 | stop reply packet and the target is not waiting. */ | |
de44f5a7 | 686 | int cached_wait_status = 0; |
a6f3e723 SL |
687 | |
688 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
689 | expect acks from each other. The connection is assumed to be | |
690 | reliable. */ | |
de44f5a7 | 691 | bool noack_mode = false; |
82f73884 PA |
692 | |
693 | /* True if we're connected in extended remote mode. */ | |
de44f5a7 | 694 | bool extended = false; |
82f73884 | 695 | |
e24a49d8 PA |
696 | /* True if we resumed the target and we're waiting for the target to |
697 | stop. In the mean time, we can't start another command/query. | |
698 | The remote server wouldn't be ready to process it, so we'd | |
699 | timeout waiting for a reply that would never come and eventually | |
700 | we'd close the connection. This can happen in asynchronous mode | |
701 | because we allow GDB commands while the target is running. */ | |
de44f5a7 | 702 | bool waiting_for_stop_reply = false; |
74531fed | 703 | |
d458bd84 | 704 | /* The status of the stub support for the various vCont actions. */ |
de44f5a7 | 705 | vCont_action_support supports_vCont; |
782b2b07 | 706 | |
de44f5a7 | 707 | /* True if the user has pressed Ctrl-C, but the target hasn't |
3a29589a | 708 | responded to that. */ |
de44f5a7 | 709 | bool ctrlc_pending_p = false; |
5d93a237 | 710 | |
048094ac PA |
711 | /* True if we saw a Ctrl-C while reading or writing from/to the |
712 | remote descriptor. At that point it is not safe to send a remote | |
713 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
714 | process it once we're done with sending/receiving the current | |
715 | packet, which should be shortly. If however that takes too long, | |
716 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
de44f5a7 | 717 | bool got_ctrlc_during_io = false; |
048094ac | 718 | |
5d93a237 TT |
719 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
720 | remote_open knows that we don't have a file open when the program | |
721 | starts. */ | |
de44f5a7 | 722 | struct serial *remote_desc = nullptr; |
47f8a51d TT |
723 | |
724 | /* These are the threads which we last sent to the remote system. The | |
725 | TID member will be -1 for all or -2 for not sent yet. */ | |
de44f5a7 PA |
726 | ptid_t general_thread = null_ptid; |
727 | ptid_t continue_thread = null_ptid; | |
262e1174 TT |
728 | |
729 | /* This is the traceframe which we last selected on the remote system. | |
730 | It will be -1 if no traceframe is selected. */ | |
de44f5a7 | 731 | int remote_traceframe_number = -1; |
747dc59d | 732 | |
de44f5a7 | 733 | char *last_pass_packet = nullptr; |
5e4a05c4 TT |
734 | |
735 | /* The last QProgramSignals packet sent to the target. We bypass | |
736 | sending a new program signals list down to the target if the new | |
737 | packet is exactly the same as the last we sent. IOW, we only let | |
738 | the target know about program signals list changes. */ | |
de44f5a7 | 739 | char *last_program_signals_packet = nullptr; |
b73be471 | 740 | |
de44f5a7 | 741 | gdb_signal last_sent_signal = GDB_SIGNAL_0; |
280ceea3 | 742 | |
de44f5a7 | 743 | bool last_sent_step = false; |
8e88304f | 744 | |
3a00c802 | 745 | /* The execution direction of the last resume we got. */ |
de44f5a7 | 746 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; |
3a00c802 | 747 | |
de44f5a7 PA |
748 | char *finished_object = nullptr; |
749 | char *finished_annex = nullptr; | |
750 | ULONGEST finished_offset = 0; | |
b80fafe3 TT |
751 | |
752 | /* Should we try the 'ThreadInfo' query packet? | |
753 | ||
754 | This variable (NOT available to the user: auto-detect only!) | |
755 | determines whether GDB will use the new, simpler "ThreadInfo" | |
756 | query or the older, more complex syntax for thread queries. | |
757 | This is an auto-detect variable (set to true at each connect, | |
758 | and set to false when the target fails to recognize it). */ | |
de44f5a7 PA |
759 | bool use_threadinfo_query = false; |
760 | bool use_threadextra_query = false; | |
88b496c3 | 761 | |
de44f5a7 PA |
762 | threadref echo_nextthread {}; |
763 | threadref nextthread {}; | |
764 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
5965e028 YQ |
765 | |
766 | /* The state of remote notification. */ | |
de44f5a7 | 767 | struct remote_notif_state *notif_state = nullptr; |
f4abbc16 MM |
768 | |
769 | /* The branch trace configuration. */ | |
de44f5a7 | 770 | struct btrace_config btrace_config {}; |
15a201c8 GB |
771 | |
772 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
773 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
774 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
775 | has yet been sent. */ | |
de44f5a7 | 776 | int fs_pid = -1; |
80152258 PA |
777 | |
778 | /* A readahead cache for vFile:pread. Often, reading a binary | |
779 | involves a sequence of small reads. E.g., when parsing an ELF | |
780 | file. A readahead cache helps mostly the case of remote | |
781 | debugging on a connection with higher latency, due to the | |
782 | request/reply nature of the RSP. We only cache data for a single | |
783 | file descriptor at a time. */ | |
784 | struct readahead_cache readahead_cache; | |
9d6eea31 PA |
785 | |
786 | private: | |
787 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
788 | is only one entry here, though we may see more with stubs that | |
789 | support multi-process. */ | |
43c3a0e4 | 790 | std::unordered_map<struct gdbarch *, remote_arch_state> |
9d6eea31 | 791 | m_arch_states; |
ea9c271d DJ |
792 | }; |
793 | ||
7aabaf9d SM |
794 | /* Private data that we'll store in (struct thread_info)->priv. */ |
795 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 796 | { |
7aabaf9d SM |
797 | std::string extra; |
798 | std::string name; | |
799 | int core = -1; | |
799a2abe | 800 | |
f6327dcb KB |
801 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
802 | sequence of bytes. */ | |
7aabaf9d | 803 | gdb::byte_vector thread_handle; |
f6327dcb | 804 | |
799a2abe | 805 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 806 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
807 | |
808 | /* This is set to the data address of the access causing the target | |
809 | to stop for a watchpoint. */ | |
7aabaf9d | 810 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
811 | |
812 | /* Fields used by the vCont action coalescing implemented in | |
813 | remote_resume / remote_commit_resume. remote_resume stores each | |
814 | thread's last resume request in these fields, so that a later | |
815 | remote_commit_resume knows which is the proper action for this | |
816 | thread to include in the vCont packet. */ | |
817 | ||
818 | /* True if the last target_resume call for this thread was a step | |
819 | request, false if a continue request. */ | |
7aabaf9d | 820 | int last_resume_step = 0; |
85ad3aaf PA |
821 | |
822 | /* The signal specified in the last target_resume call for this | |
823 | thread. */ | |
7aabaf9d | 824 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
825 | |
826 | /* Whether this thread was already vCont-resumed on the remote | |
827 | side. */ | |
7aabaf9d | 828 | int vcont_resumed = 0; |
dc146f7c VP |
829 | }; |
830 | ||
de44f5a7 PA |
831 | remote_state::remote_state () |
832 | { | |
833 | /* The default buffer size is unimportant; it will be expanded | |
834 | whenever a larger buffer is needed. */ | |
835 | this->buf_size = 400; | |
836 | this->buf = (char *) xmalloc (this->buf_size); | |
837 | } | |
838 | ||
839 | remote_state::~remote_state () | |
840 | { | |
841 | xfree (this->last_pass_packet); | |
842 | xfree (this->last_program_signals_packet); | |
843 | xfree (this->buf); | |
844 | xfree (this->finished_object); | |
845 | xfree (this->finished_annex); | |
846 | } | |
847 | ||
ea9c271d DJ |
848 | /* This data could be associated with a target, but we do not always |
849 | have access to the current target when we need it, so for now it is | |
850 | static. This will be fine for as long as only one target is in use | |
851 | at a time. */ | |
cf792862 | 852 | static struct remote_state *remote_state; |
ea9c271d DJ |
853 | |
854 | static struct remote_state * | |
0b83947e | 855 | get_remote_state_raw (void) |
ea9c271d | 856 | { |
cf792862 TT |
857 | return remote_state; |
858 | } | |
859 | ||
35b1e5cc SS |
860 | /* Utility: generate error from an incoming stub packet. */ |
861 | static void | |
862 | trace_error (char *buf) | |
863 | { | |
864 | if (*buf++ != 'E') | |
865 | return; /* not an error msg */ | |
866 | switch (*buf) | |
867 | { | |
868 | case '1': /* malformed packet error */ | |
869 | if (*++buf == '0') /* general case: */ | |
870 | error (_("remote.c: error in outgoing packet.")); | |
871 | else | |
872 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
873 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
874 | default: |
875 | error (_("Target returns error code '%s'."), buf); | |
876 | } | |
877 | } | |
878 | ||
879 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 880 | |
35b1e5cc | 881 | static char * |
b6bb3468 | 882 | remote_get_noisy_reply () |
35b1e5cc | 883 | { |
b6bb3468 PA |
884 | struct remote_state *rs = get_remote_state (); |
885 | ||
35b1e5cc SS |
886 | do /* Loop on reply from remote stub. */ |
887 | { | |
888 | char *buf; | |
a744cf53 | 889 | |
0df8b418 | 890 | QUIT; /* Allow user to bail out with ^C. */ |
b6bb3468 PA |
891 | getpkt (&rs->buf, &rs->buf_size, 0); |
892 | buf = rs->buf; | |
ad91cd99 | 893 | if (buf[0] == 'E') |
35b1e5cc | 894 | trace_error (buf); |
61012eef | 895 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
896 | { |
897 | ULONGEST ul; | |
898 | CORE_ADDR from, to, org_to; | |
256642e8 | 899 | const char *p, *pp; |
dde08ee1 | 900 | int adjusted_size = 0; |
7556d4a4 | 901 | int relocated = 0; |
dde08ee1 PA |
902 | |
903 | p = buf + strlen ("qRelocInsn:"); | |
904 | pp = unpack_varlen_hex (p, &ul); | |
905 | if (*pp != ';') | |
cb91c06a | 906 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
907 | from = ul; |
908 | ||
909 | p = pp + 1; | |
a9cbf802 | 910 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
911 | to = ul; |
912 | ||
913 | org_to = to; | |
914 | ||
492d29ea | 915 | TRY |
dde08ee1 | 916 | { |
f5656ead | 917 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 918 | relocated = 1; |
dde08ee1 | 919 | } |
492d29ea | 920 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
921 | { |
922 | if (ex.error == MEMORY_ERROR) | |
923 | { | |
924 | /* Propagate memory errors silently back to the | |
925 | target. The stub may have limited the range of | |
926 | addresses we can write to, for example. */ | |
927 | } | |
928 | else | |
929 | { | |
930 | /* Something unexpectedly bad happened. Be verbose | |
931 | so we can tell what, and propagate the error back | |
932 | to the stub, so it doesn't get stuck waiting for | |
933 | a response. */ | |
934 | exception_fprintf (gdb_stderr, ex, | |
935 | _("warning: relocating instruction: ")); | |
936 | } | |
937 | putpkt ("E01"); | |
938 | } | |
492d29ea | 939 | END_CATCH |
7556d4a4 PA |
940 | |
941 | if (relocated) | |
dde08ee1 PA |
942 | { |
943 | adjusted_size = to - org_to; | |
944 | ||
b6bb3468 | 945 | xsnprintf (buf, rs->buf_size, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
946 | putpkt (buf); |
947 | } | |
dde08ee1 | 948 | } |
ad91cd99 | 949 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
950 | remote_console_output (buf + 1); /* 'O' message from stub */ |
951 | else | |
0df8b418 | 952 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
953 | } |
954 | while (1); | |
955 | } | |
3c3bea1c | 956 | |
9d6eea31 PA |
957 | struct remote_arch_state * |
958 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 959 | { |
43c3a0e4 PA |
960 | remote_arch_state *rsa; |
961 | ||
962 | auto it = this->m_arch_states.find (gdbarch); | |
963 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 964 | { |
43c3a0e4 PA |
965 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
966 | std::forward_as_tuple (gdbarch), | |
967 | std::forward_as_tuple (gdbarch)); | |
968 | rsa = &p.first->second; | |
9d6eea31 PA |
969 | |
970 | /* Make sure that the packet buffer is plenty big enough for | |
971 | this architecture. */ | |
972 | if (this->buf_size < rsa->remote_packet_size) | |
973 | { | |
974 | this->buf_size = 2 * rsa->remote_packet_size; | |
975 | this->buf = (char *) xrealloc (this->buf, this->buf_size); | |
976 | } | |
977 | } | |
43c3a0e4 PA |
978 | else |
979 | rsa = &it->second; | |
980 | ||
981 | return rsa; | |
d01949b6 AC |
982 | } |
983 | ||
0b83947e DJ |
984 | /* Fetch the global remote target state. */ |
985 | ||
986 | static struct remote_state * | |
987 | get_remote_state (void) | |
988 | { | |
9d6eea31 PA |
989 | struct remote_state *rs = get_remote_state_raw (); |
990 | ||
0b83947e DJ |
991 | /* Make sure that the remote architecture state has been |
992 | initialized, because doing so might reallocate rs->buf. Any | |
993 | function which calls getpkt also needs to be mindful of changes | |
994 | to rs->buf, but this call limits the number of places which run | |
995 | into trouble. */ | |
9d6eea31 | 996 | rs->get_remote_arch_state (target_gdbarch ()); |
0b83947e | 997 | |
9d6eea31 | 998 | return rs; |
0b83947e DJ |
999 | } |
1000 | ||
94585166 DB |
1001 | /* Cleanup routine for the remote module's pspace data. */ |
1002 | ||
1003 | static void | |
1004 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
1005 | { | |
19ba03f4 | 1006 | char *remote_exec_file = (char *) arg; |
94585166 DB |
1007 | |
1008 | xfree (remote_exec_file); | |
1009 | } | |
1010 | ||
1011 | /* Fetch the remote exec-file from the current program space. */ | |
1012 | ||
1013 | static const char * | |
1014 | get_remote_exec_file (void) | |
1015 | { | |
1016 | char *remote_exec_file; | |
1017 | ||
19ba03f4 SM |
1018 | remote_exec_file |
1019 | = (char *) program_space_data (current_program_space, | |
1020 | remote_pspace_data); | |
94585166 DB |
1021 | if (remote_exec_file == NULL) |
1022 | return ""; | |
1023 | ||
1024 | return remote_exec_file; | |
1025 | } | |
1026 | ||
1027 | /* Set the remote exec file for PSPACE. */ | |
1028 | ||
1029 | static void | |
1030 | set_pspace_remote_exec_file (struct program_space *pspace, | |
1031 | char *remote_exec_file) | |
1032 | { | |
19ba03f4 | 1033 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
1034 | |
1035 | xfree (old_file); | |
1036 | set_program_space_data (pspace, remote_pspace_data, | |
1037 | xstrdup (remote_exec_file)); | |
1038 | } | |
1039 | ||
1040 | /* The "set/show remote exec-file" set command hook. */ | |
1041 | ||
1042 | static void | |
eb4c3f4a | 1043 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1044 | struct cmd_list_element *c) |
1045 | { | |
1046 | gdb_assert (remote_exec_file_var != NULL); | |
1047 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1048 | } | |
1049 | ||
1050 | /* The "set/show remote exec-file" show command hook. */ | |
1051 | ||
1052 | static void | |
1053 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1054 | struct cmd_list_element *cmd, const char *value) | |
1055 | { | |
1056 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
1057 | } | |
1058 | ||
74ca34ce DJ |
1059 | static int |
1060 | compare_pnums (const void *lhs_, const void *rhs_) | |
1061 | { | |
19ba03f4 SM |
1062 | const struct packet_reg * const *lhs |
1063 | = (const struct packet_reg * const *) lhs_; | |
1064 | const struct packet_reg * const *rhs | |
1065 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
1066 | |
1067 | if ((*lhs)->pnum < (*rhs)->pnum) | |
1068 | return -1; | |
1069 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
1070 | return 0; | |
1071 | else | |
1072 | return 1; | |
1073 | } | |
1074 | ||
c21236dc PA |
1075 | static int |
1076 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1077 | { |
74ca34ce | 1078 | int regnum, num_remote_regs, offset; |
74ca34ce | 1079 | struct packet_reg **remote_regs; |
ea9c271d | 1080 | |
4a22f64d | 1081 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1082 | { |
c21236dc | 1083 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1084 | |
4a22f64d | 1085 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1086 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1087 | r->pnum = -1; | |
1088 | else | |
1089 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1090 | ||
b323314b | 1091 | r->regnum = regnum; |
74ca34ce DJ |
1092 | } |
1093 | ||
1094 | /* Define the g/G packet format as the contents of each register | |
1095 | with a remote protocol number, in order of ascending protocol | |
1096 | number. */ | |
1097 | ||
224c3ddb | 1098 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1099 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1100 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1101 | regnum++) |
c21236dc PA |
1102 | if (regs[regnum].pnum != -1) |
1103 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1104 | |
74ca34ce DJ |
1105 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
1106 | compare_pnums); | |
1107 | ||
1108 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1109 | { | |
1110 | remote_regs[regnum]->in_g_packet = 1; | |
1111 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1112 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1113 | } |
1114 | ||
c21236dc PA |
1115 | return offset; |
1116 | } | |
1117 | ||
1118 | /* Given the architecture described by GDBARCH, return the remote | |
1119 | protocol register's number and the register's offset in the g/G | |
1120 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1121 | If the target does not have a mapping for REGNUM, return false, | |
1122 | otherwise, return true. */ | |
1123 | ||
1124 | int | |
1125 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1126 | int *pnum, int *poffset) | |
1127 | { | |
c21236dc PA |
1128 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1129 | ||
b80406ac | 1130 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1131 | |
b80406ac | 1132 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1133 | |
1134 | *pnum = regs[regnum].pnum; | |
1135 | *poffset = regs[regnum].offset; | |
1136 | ||
c21236dc PA |
1137 | return *pnum != -1; |
1138 | } | |
1139 | ||
9d6eea31 | 1140 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1141 | { |
c21236dc PA |
1142 | /* Use the architecture to build a regnum<->pnum table, which will be |
1143 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1144 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1145 | |
74ca34ce DJ |
1146 | /* Record the maximum possible size of the g packet - it may turn out |
1147 | to be smaller. */ | |
9d6eea31 PA |
1148 | this->sizeof_g_packet |
1149 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1150 | |
0df8b418 | 1151 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1152 | remote stubs have a hardwired buffer size of 400 bytes |
1153 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1154 | as the maximum packet-size to ensure that the packet and an extra | |
1155 | NUL character can always fit in the buffer. This stops GDB | |
1156 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1157 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1158 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1159 | |
ea9c271d | 1160 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1161 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1162 | |
1163 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1164 | default, adjust the size accordingly. Remember that each byte is |
1165 | encoded as two characters. 32 is the overhead for the packet | |
1166 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1167 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1168 | little. */ |
9d6eea31 PA |
1169 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1170 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1171 | } |
1172 | ||
1173 | /* Return the current allowed size of a remote packet. This is | |
1174 | inferred from the current architecture, and should be used to | |
1175 | limit the length of outgoing packets. */ | |
1176 | static long | |
1177 | get_remote_packet_size (void) | |
1178 | { | |
be2a5f71 | 1179 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1180 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1181 | |
be2a5f71 DJ |
1182 | if (rs->explicit_packet_size) |
1183 | return rs->explicit_packet_size; | |
1184 | ||
ea9c271d | 1185 | return rsa->remote_packet_size; |
d01949b6 AC |
1186 | } |
1187 | ||
ad10f812 | 1188 | static struct packet_reg * |
5cd63fda PA |
1189 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1190 | long regnum) | |
ad10f812 | 1191 | { |
5cd63fda | 1192 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1193 | return NULL; |
1194 | else | |
ad10f812 | 1195 | { |
ea9c271d | 1196 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1197 | |
b323314b AC |
1198 | gdb_assert (r->regnum == regnum); |
1199 | return r; | |
ad10f812 | 1200 | } |
ad10f812 AC |
1201 | } |
1202 | ||
1203 | static struct packet_reg * | |
5cd63fda PA |
1204 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1205 | LONGEST pnum) | |
ad10f812 | 1206 | { |
b323314b | 1207 | int i; |
a744cf53 | 1208 | |
5cd63fda | 1209 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1210 | { |
ea9c271d | 1211 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1212 | |
b323314b AC |
1213 | if (r->pnum == pnum) |
1214 | return r; | |
ad10f812 AC |
1215 | } |
1216 | return NULL; | |
d01949b6 AC |
1217 | } |
1218 | ||
f6ac5f3d | 1219 | static remote_target remote_ops; |
c906108c | 1220 | |
f6ac5f3d | 1221 | static extended_remote_target extended_remote_ops; |
c906108c | 1222 | |
6426a772 JM |
1223 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
1224 | ``forever'' still use the normal timeout mechanism. This is | |
1225 | currently used by the ASYNC code to guarentee that target reads | |
1226 | during the initial connect always time-out. Once getpkt has been | |
1227 | modified to return a timeout indication and, in turn | |
1228 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 1229 | this can go away. */ |
6426a772 JM |
1230 | static int wait_forever_enabled_p = 1; |
1231 | ||
9a7071a8 JB |
1232 | /* Allow the user to specify what sequence to send to the remote |
1233 | when he requests a program interruption: Although ^C is usually | |
1234 | what remote systems expect (this is the default, here), it is | |
1235 | sometimes preferable to send a break. On other systems such | |
1236 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1237 | is required in order to interrupt the execution. */ | |
1238 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1239 | const char interrupt_sequence_break[] = "BREAK"; | |
1240 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1241 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1242 | { |
1243 | interrupt_sequence_control_c, | |
1244 | interrupt_sequence_break, | |
1245 | interrupt_sequence_break_g, | |
1246 | NULL | |
1247 | }; | |
1248 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1249 | ||
1250 | static void | |
1251 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1252 | struct cmd_list_element *c, | |
1253 | const char *value) | |
1254 | { | |
1255 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1256 | fprintf_filtered (file, | |
1257 | _("Send the ASCII ETX character (Ctrl-c) " | |
1258 | "to the remote target to interrupt the " | |
1259 | "execution of the program.\n")); | |
1260 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1261 | fprintf_filtered (file, | |
1262 | _("send a break signal to the remote target " | |
1263 | "to interrupt the execution of the program.\n")); | |
1264 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1265 | fprintf_filtered (file, | |
1266 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1267 | "the remote target to interrupt the execution " | |
1268 | "of Linux kernel.\n")); | |
1269 | else | |
1270 | internal_error (__FILE__, __LINE__, | |
1271 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1272 | interrupt_sequence_mode); | |
1273 | } | |
6426a772 | 1274 | |
9a7071a8 JB |
1275 | /* This boolean variable specifies whether interrupt_sequence is sent |
1276 | to the remote target when gdb connects to it. | |
1277 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1278 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
1279 | static int interrupt_on_connect = 0; | |
c906108c | 1280 | |
9a7071a8 JB |
1281 | /* This variable is used to implement the "set/show remotebreak" commands. |
1282 | Since these commands are now deprecated in favor of "set/show remote | |
1283 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
1284 | static int remote_break; |
1285 | ||
9a7071a8 | 1286 | static void |
eb4c3f4a | 1287 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1288 | { |
1289 | if (remote_break) | |
1290 | interrupt_sequence_mode = interrupt_sequence_break; | |
1291 | else | |
1292 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1293 | } | |
1294 | ||
1295 | static void | |
1296 | show_remotebreak (struct ui_file *file, int from_tty, | |
1297 | struct cmd_list_element *c, | |
1298 | const char *value) | |
1299 | { | |
1300 | } | |
1301 | ||
c906108c SS |
1302 | /* This variable sets the number of bits in an address that are to be |
1303 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1304 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1305 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1306 | initial implementation of remote.c restricted the address sent in | |
1307 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1308 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1309 | address was never sent. Since fixing this bug may cause a break in | |
1310 | some remote targets this variable is principly provided to | |
23860348 | 1311 | facilitate backward compatibility. */ |
c906108c | 1312 | |
883b9c6c | 1313 | static unsigned int remote_address_size; |
c906108c | 1314 | |
11cf8741 | 1315 | \f |
11cf8741 | 1316 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1317 | memory read/write packet. MIN (rsa->remote_packet_size, |
1318 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1319 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1320 | (speed up transfers). The variables ``preferred_*'' (the user |
1321 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1322 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1323 | |
1324 | struct memory_packet_config | |
1325 | { | |
a121b7c1 | 1326 | const char *name; |
11cf8741 JM |
1327 | long size; |
1328 | int fixed_p; | |
1329 | }; | |
1330 | ||
cc0be08f PA |
1331 | /* The default max memory-write-packet-size, when the setting is |
1332 | "fixed". The 16k is historical. (It came from older GDB's using | |
1333 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1334 | don't cope very well with large alloca calls.) */ | |
1335 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1336 | |
1337 | /* The minimum remote packet size for memory transfers. Ensures we | |
1338 | can write at least one byte. */ | |
1339 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1340 | ||
cc0be08f PA |
1341 | /* Get the memory packet size, assuming it is fixed. */ |
1342 | ||
1343 | static long | |
1344 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1345 | { | |
1346 | gdb_assert (config->fixed_p); | |
1347 | ||
1348 | if (config->size <= 0) | |
1349 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1350 | else | |
1351 | return config->size; | |
1352 | } | |
1353 | ||
11cf8741 JM |
1354 | /* Compute the current size of a read/write packet. Since this makes |
1355 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1356 | ||
1357 | static long | |
1358 | get_memory_packet_size (struct memory_packet_config *config) | |
1359 | { | |
d01949b6 | 1360 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1361 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1362 | |
11cf8741 JM |
1363 | long what_they_get; |
1364 | if (config->fixed_p) | |
cc0be08f | 1365 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1366 | else |
1367 | { | |
ea9c271d | 1368 | what_they_get = get_remote_packet_size (); |
23860348 | 1369 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1370 | if (config->size > 0 |
1371 | && what_they_get > config->size) | |
1372 | what_they_get = config->size; | |
be2a5f71 DJ |
1373 | |
1374 | /* Limit it to the size of the targets ``g'' response unless we have | |
1375 | permission from the stub to use a larger packet size. */ | |
1376 | if (rs->explicit_packet_size == 0 | |
1377 | && rsa->actual_register_packet_size > 0 | |
1378 | && what_they_get > rsa->actual_register_packet_size) | |
1379 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1380 | } |
a5c0808e PA |
1381 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1382 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1383 | |
1384 | /* Make sure there is room in the global buffer for this packet | |
1385 | (including its trailing NUL byte). */ | |
1386 | if (rs->buf_size < what_they_get + 1) | |
1387 | { | |
1388 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1389 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1390 | } |
1391 | ||
11cf8741 JM |
1392 | return what_they_get; |
1393 | } | |
1394 | ||
0df8b418 | 1395 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1396 | something really big then do a sanity check. */ |
11cf8741 JM |
1397 | |
1398 | static void | |
ac88e2de | 1399 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1400 | { |
1401 | int fixed_p = config->fixed_p; | |
1402 | long size = config->size; | |
a744cf53 | 1403 | |
11cf8741 | 1404 | if (args == NULL) |
8a3fe4f8 | 1405 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1406 | else if (strcmp (args, "hard") == 0 |
1407 | || strcmp (args, "fixed") == 0) | |
1408 | fixed_p = 1; | |
1409 | else if (strcmp (args, "soft") == 0 | |
1410 | || strcmp (args, "limit") == 0) | |
1411 | fixed_p = 0; | |
1412 | else | |
1413 | { | |
1414 | char *end; | |
a744cf53 | 1415 | |
11cf8741 JM |
1416 | size = strtoul (args, &end, 0); |
1417 | if (args == end) | |
8a3fe4f8 | 1418 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1419 | |
1420 | /* Instead of explicitly capping the size of a packet to or | |
1421 | disallowing it, the user is allowed to set the size to | |
1422 | something arbitrarily large. */ | |
11cf8741 | 1423 | } |
a5c0808e | 1424 | |
23860348 | 1425 | /* Extra checks? */ |
11cf8741 JM |
1426 | if (fixed_p && !config->fixed_p) |
1427 | { | |
cc0be08f PA |
1428 | /* So that the query shows the correct value. */ |
1429 | long query_size = (size <= 0 | |
1430 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1431 | : size); | |
1432 | ||
e2e0b3e5 AC |
1433 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1434 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1435 | config->name, query_size)) |
8a3fe4f8 | 1436 | error (_("Packet size not changed.")); |
11cf8741 | 1437 | } |
23860348 | 1438 | /* Update the config. */ |
11cf8741 JM |
1439 | config->fixed_p = fixed_p; |
1440 | config->size = size; | |
1441 | } | |
1442 | ||
1443 | static void | |
1444 | show_memory_packet_size (struct memory_packet_config *config) | |
1445 | { | |
cc0be08f PA |
1446 | if (config->size == 0) |
1447 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1448 | else | |
1449 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1450 | if (config->fixed_p) |
a3f17187 | 1451 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1452 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1453 | else |
cc0be08f PA |
1454 | { |
1455 | struct remote_state *rs = get_remote_state (); | |
1456 | ||
1457 | if (rs->remote_desc != NULL) | |
1458 | printf_filtered (_("Packets are limited to %ld bytes.\n"), | |
1459 | get_memory_packet_size (config)); | |
1460 | else | |
1461 | puts_filtered ("The actual limit will be further reduced " | |
1462 | "dependent on the target.\n"); | |
1463 | } | |
11cf8741 JM |
1464 | } |
1465 | ||
1466 | static struct memory_packet_config memory_write_packet_config = | |
1467 | { | |
1468 | "memory-write-packet-size", | |
1469 | }; | |
1470 | ||
1471 | static void | |
ac88e2de | 1472 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1473 | { |
1474 | set_memory_packet_size (args, &memory_write_packet_config); | |
1475 | } | |
1476 | ||
1477 | static void | |
ac88e2de | 1478 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1479 | { |
1480 | show_memory_packet_size (&memory_write_packet_config); | |
1481 | } | |
1482 | ||
1483 | static long | |
1484 | get_memory_write_packet_size (void) | |
1485 | { | |
1486 | return get_memory_packet_size (&memory_write_packet_config); | |
1487 | } | |
1488 | ||
1489 | static struct memory_packet_config memory_read_packet_config = | |
1490 | { | |
1491 | "memory-read-packet-size", | |
1492 | }; | |
1493 | ||
1494 | static void | |
ac88e2de | 1495 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1496 | { |
1497 | set_memory_packet_size (args, &memory_read_packet_config); | |
1498 | } | |
1499 | ||
1500 | static void | |
ac88e2de | 1501 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1502 | { |
1503 | show_memory_packet_size (&memory_read_packet_config); | |
1504 | } | |
1505 | ||
1506 | static long | |
1507 | get_memory_read_packet_size (void) | |
1508 | { | |
1509 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1510 | |
11cf8741 JM |
1511 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1512 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1513 | increased beyond this. */ |
1514 | if (size > get_remote_packet_size ()) | |
1515 | size = get_remote_packet_size (); | |
11cf8741 JM |
1516 | return size; |
1517 | } | |
1518 | ||
11cf8741 | 1519 | \f |
5a2468f5 | 1520 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1521 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1522 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1523 | |
1524 | enum packet_support | |
1525 | { | |
1526 | PACKET_SUPPORT_UNKNOWN = 0, | |
1527 | PACKET_ENABLE, | |
1528 | PACKET_DISABLE | |
1529 | }; | |
1530 | ||
5a2468f5 JM |
1531 | struct packet_config |
1532 | { | |
bb572ddd DJ |
1533 | const char *name; |
1534 | const char *title; | |
4082afcc PA |
1535 | |
1536 | /* If auto, GDB auto-detects support for this packet or feature, | |
1537 | either through qSupported, or by trying the packet and looking | |
1538 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1539 | packet. If false, the packet is disabled. Configs that don't |
1540 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1541 | enum auto_boolean detect; |
4082afcc PA |
1542 | |
1543 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1544 | enum packet_support support; |
1545 | }; | |
1546 | ||
d471ea57 | 1547 | /* Analyze a packet's return value and update the packet config |
23860348 | 1548 | accordingly. */ |
d471ea57 AC |
1549 | |
1550 | enum packet_result | |
1551 | { | |
1552 | PACKET_ERROR, | |
1553 | PACKET_OK, | |
1554 | PACKET_UNKNOWN | |
1555 | }; | |
1556 | ||
4082afcc PA |
1557 | static enum packet_support packet_config_support (struct packet_config *config); |
1558 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1559 | |
1560 | static void | |
fba45db2 | 1561 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1562 | { |
a121b7c1 | 1563 | const char *support = "internal-error"; |
a744cf53 | 1564 | |
4082afcc | 1565 | switch (packet_config_support (config)) |
5a2468f5 JM |
1566 | { |
1567 | case PACKET_ENABLE: | |
1568 | support = "enabled"; | |
1569 | break; | |
1570 | case PACKET_DISABLE: | |
1571 | support = "disabled"; | |
1572 | break; | |
1573 | case PACKET_SUPPORT_UNKNOWN: | |
1574 | support = "unknown"; | |
1575 | break; | |
1576 | } | |
1577 | switch (config->detect) | |
1578 | { | |
7f19b9a2 | 1579 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1580 | printf_filtered (_("Support for the `%s' packet " |
1581 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1582 | config->name, support); |
5a2468f5 | 1583 | break; |
7f19b9a2 AC |
1584 | case AUTO_BOOLEAN_TRUE: |
1585 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1586 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1587 | config->name, support); | |
8e248173 | 1588 | break; |
5a2468f5 JM |
1589 | } |
1590 | } | |
1591 | ||
1592 | static void | |
bb572ddd DJ |
1593 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1594 | const char *title, int legacy) | |
d471ea57 | 1595 | { |
5a2468f5 JM |
1596 | char *set_doc; |
1597 | char *show_doc; | |
d471ea57 | 1598 | char *cmd_name; |
3ed07be4 | 1599 | |
5a2468f5 JM |
1600 | config->name = name; |
1601 | config->title = title; | |
b435e160 AC |
1602 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1603 | name, title); | |
3e43a32a MS |
1604 | show_doc = xstrprintf ("Show current use of remote " |
1605 | "protocol `%s' (%s) packet", | |
b435e160 | 1606 | name, title); |
d471ea57 | 1607 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1608 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1609 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1610 | &config->detect, set_doc, |
1611 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1612 | NULL, |
bb572ddd DJ |
1613 | show_remote_protocol_packet_cmd, |
1614 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1615 | /* The command code copies the documentation strings. */ |
1616 | xfree (set_doc); | |
1617 | xfree (show_doc); | |
23860348 | 1618 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1619 | if (legacy) |
1620 | { | |
1621 | char *legacy_name; | |
a744cf53 | 1622 | |
b435e160 | 1623 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1624 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1625 | &remote_set_cmdlist); |
d471ea57 | 1626 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1627 | &remote_show_cmdlist); |
d471ea57 | 1628 | } |
5a2468f5 JM |
1629 | } |
1630 | ||
d471ea57 | 1631 | static enum packet_result |
a76d924d | 1632 | packet_check_result (const char *buf) |
5a2468f5 | 1633 | { |
d471ea57 | 1634 | if (buf[0] != '\0') |
5a2468f5 | 1635 | { |
d471ea57 | 1636 | /* The stub recognized the packet request. Check that the |
23860348 | 1637 | operation succeeded. */ |
a76d924d DJ |
1638 | if (buf[0] == 'E' |
1639 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1640 | && buf[3] == '\0') | |
1641 | /* "Enn" - definitly an error. */ | |
1642 | return PACKET_ERROR; | |
1643 | ||
1644 | /* Always treat "E." as an error. This will be used for | |
1645 | more verbose error messages, such as E.memtypes. */ | |
1646 | if (buf[0] == 'E' && buf[1] == '.') | |
1647 | return PACKET_ERROR; | |
1648 | ||
1649 | /* The packet may or may not be OK. Just assume it is. */ | |
1650 | return PACKET_OK; | |
1651 | } | |
1652 | else | |
1653 | /* The stub does not support the packet. */ | |
1654 | return PACKET_UNKNOWN; | |
1655 | } | |
1656 | ||
1657 | static enum packet_result | |
1658 | packet_ok (const char *buf, struct packet_config *config) | |
1659 | { | |
1660 | enum packet_result result; | |
1661 | ||
4082afcc PA |
1662 | if (config->detect != AUTO_BOOLEAN_TRUE |
1663 | && config->support == PACKET_DISABLE) | |
1664 | internal_error (__FILE__, __LINE__, | |
1665 | _("packet_ok: attempt to use a disabled packet")); | |
1666 | ||
a76d924d DJ |
1667 | result = packet_check_result (buf); |
1668 | switch (result) | |
1669 | { | |
1670 | case PACKET_OK: | |
1671 | case PACKET_ERROR: | |
1672 | /* The stub recognized the packet request. */ | |
4082afcc | 1673 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1674 | { |
d471ea57 AC |
1675 | if (remote_debug) |
1676 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1677 | "Packet %s (%s) is supported\n", |
1678 | config->name, config->title); | |
d471ea57 | 1679 | config->support = PACKET_ENABLE; |
d471ea57 | 1680 | } |
a76d924d DJ |
1681 | break; |
1682 | case PACKET_UNKNOWN: | |
23860348 | 1683 | /* The stub does not support the packet. */ |
4082afcc PA |
1684 | if (config->detect == AUTO_BOOLEAN_AUTO |
1685 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1686 | { |
4082afcc PA |
1687 | /* If the stub previously indicated that the packet was |
1688 | supported then there is a protocol error. */ | |
1689 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1690 | config->name, config->title); | |
1691 | } | |
1692 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1693 | { | |
1694 | /* The user set it wrong. */ | |
1695 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1696 | config->name, config->title); | |
d471ea57 | 1697 | } |
4082afcc PA |
1698 | |
1699 | if (remote_debug) | |
1700 | fprintf_unfiltered (gdb_stdlog, | |
1701 | "Packet %s (%s) is NOT supported\n", | |
1702 | config->name, config->title); | |
1703 | config->support = PACKET_DISABLE; | |
a76d924d | 1704 | break; |
5a2468f5 | 1705 | } |
a76d924d DJ |
1706 | |
1707 | return result; | |
5a2468f5 JM |
1708 | } |
1709 | ||
444abaca DJ |
1710 | enum { |
1711 | PACKET_vCont = 0, | |
1712 | PACKET_X, | |
1713 | PACKET_qSymbol, | |
1714 | PACKET_P, | |
1715 | PACKET_p, | |
1716 | PACKET_Z0, | |
1717 | PACKET_Z1, | |
1718 | PACKET_Z2, | |
1719 | PACKET_Z3, | |
1720 | PACKET_Z4, | |
15a201c8 | 1721 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1722 | PACKET_vFile_open, |
1723 | PACKET_vFile_pread, | |
1724 | PACKET_vFile_pwrite, | |
1725 | PACKET_vFile_close, | |
1726 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1727 | PACKET_vFile_readlink, |
0a93529c | 1728 | PACKET_vFile_fstat, |
0876f84a | 1729 | PACKET_qXfer_auxv, |
23181151 | 1730 | PACKET_qXfer_features, |
c78fa86a | 1731 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1732 | PACKET_qXfer_libraries, |
2268b414 | 1733 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1734 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1735 | PACKET_qXfer_spu_read, |
1736 | PACKET_qXfer_spu_write, | |
07e059b5 | 1737 | PACKET_qXfer_osdata, |
dc146f7c | 1738 | PACKET_qXfer_threads, |
0fb4aa4b | 1739 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1740 | PACKET_qXfer_traceframe_info, |
169081d0 | 1741 | PACKET_qXfer_uib, |
711e434b | 1742 | PACKET_qGetTIBAddr, |
444abaca | 1743 | PACKET_qGetTLSAddr, |
be2a5f71 | 1744 | PACKET_qSupported, |
bd3eecc3 | 1745 | PACKET_qTStatus, |
89be2091 | 1746 | PACKET_QPassSignals, |
82075af2 | 1747 | PACKET_QCatchSyscalls, |
9b224c5e | 1748 | PACKET_QProgramSignals, |
bc3b087d | 1749 | PACKET_QSetWorkingDir, |
aefd8b33 | 1750 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1751 | PACKET_QEnvironmentHexEncoded, |
1752 | PACKET_QEnvironmentReset, | |
1753 | PACKET_QEnvironmentUnset, | |
936d2992 | 1754 | PACKET_qCRC, |
08388c79 | 1755 | PACKET_qSearch_memory, |
2d717e4f DJ |
1756 | PACKET_vAttach, |
1757 | PACKET_vRun, | |
a6f3e723 | 1758 | PACKET_QStartNoAckMode, |
82f73884 | 1759 | PACKET_vKill, |
4aa995e1 PA |
1760 | PACKET_qXfer_siginfo_read, |
1761 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1762 | PACKET_qAttached, |
4082afcc PA |
1763 | |
1764 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1765 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1766 | |
1767 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1768 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1769 | |
1770 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1771 | PACKET_BreakpointCommands, |
4082afcc PA |
1772 | |
1773 | /* Support for fast tracepoints. */ | |
7a697b8d | 1774 | PACKET_FastTracepoints, |
4082afcc PA |
1775 | |
1776 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1777 | PACKET_StaticTracepoints, |
4082afcc PA |
1778 | |
1779 | /* Support for installing tracepoints while a trace experiment is | |
1780 | running. */ | |
1e4d1764 | 1781 | PACKET_InstallInTrace, |
4082afcc | 1782 | |
40ab02ce MS |
1783 | PACKET_bc, |
1784 | PACKET_bs, | |
409873ef | 1785 | PACKET_TracepointSource, |
d914c394 | 1786 | PACKET_QAllow, |
78d85199 | 1787 | PACKET_qXfer_fdpic, |
03583c20 | 1788 | PACKET_QDisableRandomization, |
d1feda86 | 1789 | PACKET_QAgent, |
f6f899bf | 1790 | PACKET_QTBuffer_size, |
9accd112 MM |
1791 | PACKET_Qbtrace_off, |
1792 | PACKET_Qbtrace_bts, | |
b20a6524 | 1793 | PACKET_Qbtrace_pt, |
9accd112 | 1794 | PACKET_qXfer_btrace, |
4082afcc PA |
1795 | |
1796 | /* Support for the QNonStop packet. */ | |
1797 | PACKET_QNonStop, | |
1798 | ||
65706a29 PA |
1799 | /* Support for the QThreadEvents packet. */ |
1800 | PACKET_QThreadEvents, | |
1801 | ||
4082afcc PA |
1802 | /* Support for multi-process extensions. */ |
1803 | PACKET_multiprocess_feature, | |
1804 | ||
1805 | /* Support for enabling and disabling tracepoints while a trace | |
1806 | experiment is running. */ | |
1807 | PACKET_EnableDisableTracepoints_feature, | |
1808 | ||
1809 | /* Support for collecting strings using the tracenz bytecode. */ | |
1810 | PACKET_tracenz_feature, | |
1811 | ||
1812 | /* Support for continuing to run a trace experiment while GDB is | |
1813 | disconnected. */ | |
1814 | PACKET_DisconnectedTracing_feature, | |
1815 | ||
1816 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1817 | PACKET_augmented_libraries_svr4_read_feature, | |
1818 | ||
f4abbc16 MM |
1819 | /* Support for the qXfer:btrace-conf:read packet. */ |
1820 | PACKET_qXfer_btrace_conf, | |
1821 | ||
d33501a5 MM |
1822 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1823 | PACKET_Qbtrace_conf_bts_size, | |
1824 | ||
f7e6eed5 PA |
1825 | /* Support for swbreak+ feature. */ |
1826 | PACKET_swbreak_feature, | |
1827 | ||
1828 | /* Support for hwbreak+ feature. */ | |
1829 | PACKET_hwbreak_feature, | |
1830 | ||
89245bc0 DB |
1831 | /* Support for fork events. */ |
1832 | PACKET_fork_event_feature, | |
1833 | ||
1834 | /* Support for vfork events. */ | |
1835 | PACKET_vfork_event_feature, | |
1836 | ||
b20a6524 MM |
1837 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1838 | PACKET_Qbtrace_conf_pt_size, | |
1839 | ||
94585166 DB |
1840 | /* Support for exec events. */ |
1841 | PACKET_exec_event_feature, | |
1842 | ||
750ce8d1 YQ |
1843 | /* Support for query supported vCont actions. */ |
1844 | PACKET_vContSupported, | |
1845 | ||
de979965 PA |
1846 | /* Support remote CTRL-C. */ |
1847 | PACKET_vCtrlC, | |
1848 | ||
f2faf941 PA |
1849 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1850 | PACKET_no_resumed, | |
1851 | ||
444abaca DJ |
1852 | PACKET_MAX |
1853 | }; | |
506fb367 | 1854 | |
444abaca | 1855 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1856 | |
f7e6eed5 PA |
1857 | /* Returns the packet's corresponding "set remote foo-packet" command |
1858 | state. See struct packet_config for more details. */ | |
1859 | ||
1860 | static enum auto_boolean | |
1861 | packet_set_cmd_state (int packet) | |
1862 | { | |
1863 | return remote_protocol_packets[packet].detect; | |
1864 | } | |
1865 | ||
4082afcc PA |
1866 | /* Returns whether a given packet or feature is supported. This takes |
1867 | into account the state of the corresponding "set remote foo-packet" | |
1868 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1869 | |
4082afcc PA |
1870 | static enum packet_support |
1871 | packet_config_support (struct packet_config *config) | |
1872 | { | |
1873 | switch (config->detect) | |
444abaca | 1874 | { |
4082afcc PA |
1875 | case AUTO_BOOLEAN_TRUE: |
1876 | return PACKET_ENABLE; | |
1877 | case AUTO_BOOLEAN_FALSE: | |
1878 | return PACKET_DISABLE; | |
1879 | case AUTO_BOOLEAN_AUTO: | |
1880 | return config->support; | |
1881 | default: | |
1882 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1883 | } |
4082afcc PA |
1884 | } |
1885 | ||
1886 | /* Same as packet_config_support, but takes the packet's enum value as | |
1887 | argument. */ | |
1888 | ||
1889 | static enum packet_support | |
1890 | packet_support (int packet) | |
1891 | { | |
1892 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1893 | ||
1894 | return packet_config_support (config); | |
dc8acb97 MS |
1895 | } |
1896 | ||
5a2468f5 | 1897 | static void |
444abaca DJ |
1898 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1899 | struct cmd_list_element *c, | |
1900 | const char *value) | |
5a2468f5 | 1901 | { |
444abaca | 1902 | struct packet_config *packet; |
5a2468f5 | 1903 | |
444abaca DJ |
1904 | for (packet = remote_protocol_packets; |
1905 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1906 | packet++) | |
1907 | { | |
1908 | if (&packet->detect == c->var) | |
1909 | { | |
1910 | show_packet_config_cmd (packet); | |
1911 | return; | |
1912 | } | |
1913 | } | |
9b20d036 | 1914 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1915 | c->name); |
5a2468f5 JM |
1916 | } |
1917 | ||
d471ea57 AC |
1918 | /* Should we try one of the 'Z' requests? */ |
1919 | ||
1920 | enum Z_packet_type | |
1921 | { | |
1922 | Z_PACKET_SOFTWARE_BP, | |
1923 | Z_PACKET_HARDWARE_BP, | |
1924 | Z_PACKET_WRITE_WP, | |
1925 | Z_PACKET_READ_WP, | |
1926 | Z_PACKET_ACCESS_WP, | |
1927 | NR_Z_PACKET_TYPES | |
1928 | }; | |
96baa820 | 1929 | |
d471ea57 | 1930 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1931 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1932 | |
7f19b9a2 | 1933 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1934 | |
1935 | static void | |
eb4c3f4a | 1936 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 1937 | struct cmd_list_element *c) |
96baa820 | 1938 | { |
d471ea57 | 1939 | int i; |
a744cf53 | 1940 | |
d471ea57 | 1941 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1942 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1943 | } |
1944 | ||
1945 | static void | |
08546159 AC |
1946 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1947 | struct cmd_list_element *c, | |
1948 | const char *value) | |
96baa820 | 1949 | { |
d471ea57 | 1950 | int i; |
a744cf53 | 1951 | |
d471ea57 AC |
1952 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1953 | { | |
444abaca | 1954 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1955 | } |
96baa820 JM |
1956 | } |
1957 | ||
4082afcc PA |
1958 | /* Returns true if the multi-process extensions are in effect. */ |
1959 | ||
1960 | static int | |
1961 | remote_multi_process_p (struct remote_state *rs) | |
1962 | { | |
1963 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1964 | } | |
1965 | ||
de0d863e DB |
1966 | /* Returns true if fork events are supported. */ |
1967 | ||
1968 | static int | |
1969 | remote_fork_event_p (struct remote_state *rs) | |
1970 | { | |
1971 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1972 | } | |
1973 | ||
c269dbdb DB |
1974 | /* Returns true if vfork events are supported. */ |
1975 | ||
1976 | static int | |
1977 | remote_vfork_event_p (struct remote_state *rs) | |
1978 | { | |
1979 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1980 | } | |
1981 | ||
d46addbb DB |
1982 | /* Returns true if exec events are supported. */ |
1983 | ||
1984 | static int | |
1985 | remote_exec_event_p (struct remote_state *rs) | |
1986 | { | |
1987 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1988 | } | |
1989 | ||
cbb8991c DB |
1990 | /* Insert fork catchpoint target routine. If fork events are enabled |
1991 | then return success, nothing more to do. */ | |
1992 | ||
f6ac5f3d PA |
1993 | int |
1994 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
1995 | { |
1996 | struct remote_state *rs = get_remote_state (); | |
1997 | ||
1998 | return !remote_fork_event_p (rs); | |
1999 | } | |
2000 | ||
2001 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2002 | return success. */ | |
2003 | ||
f6ac5f3d PA |
2004 | int |
2005 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2006 | { |
2007 | return 0; | |
2008 | } | |
2009 | ||
2010 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2011 | then return success, nothing more to do. */ | |
2012 | ||
f6ac5f3d PA |
2013 | int |
2014 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2015 | { |
2016 | struct remote_state *rs = get_remote_state (); | |
2017 | ||
2018 | return !remote_vfork_event_p (rs); | |
2019 | } | |
2020 | ||
2021 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2022 | return success. */ | |
2023 | ||
f6ac5f3d PA |
2024 | int |
2025 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2026 | { |
2027 | return 0; | |
2028 | } | |
2029 | ||
d46addbb DB |
2030 | /* Insert exec catchpoint target routine. If exec events are |
2031 | enabled, just return success. */ | |
2032 | ||
f6ac5f3d PA |
2033 | int |
2034 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2035 | { |
2036 | struct remote_state *rs = get_remote_state (); | |
2037 | ||
2038 | return !remote_exec_event_p (rs); | |
2039 | } | |
2040 | ||
2041 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2042 | return success. */ | |
2043 | ||
f6ac5f3d PA |
2044 | int |
2045 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2046 | { |
2047 | return 0; | |
2048 | } | |
2049 | ||
74531fed PA |
2050 | \f |
2051 | /* Asynchronous signal handle registered as event loop source for | |
2052 | when we have pending events ready to be passed to the core. */ | |
2053 | ||
2054 | static struct async_event_handler *remote_async_inferior_event_token; | |
2055 | ||
c906108c SS |
2056 | \f |
2057 | ||
79d7f229 PA |
2058 | static ptid_t magic_null_ptid; |
2059 | static ptid_t not_sent_ptid; | |
2060 | static ptid_t any_thread_ptid; | |
2061 | ||
0b16c5cf PA |
2062 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2063 | detach instead of killing it when bailing out). */ | |
2064 | ||
2065 | static int | |
2066 | remote_query_attached (int pid) | |
2067 | { | |
2068 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2069 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2070 | |
4082afcc | 2071 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2072 | return 0; |
2073 | ||
2074 | if (remote_multi_process_p (rs)) | |
bba74b36 | 2075 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 2076 | else |
bba74b36 | 2077 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
2078 | |
2079 | putpkt (rs->buf); | |
2080 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2081 | ||
2082 | switch (packet_ok (rs->buf, | |
1554e9be | 2083 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2084 | { |
2085 | case PACKET_OK: | |
2086 | if (strcmp (rs->buf, "1") == 0) | |
2087 | return 1; | |
2088 | break; | |
2089 | case PACKET_ERROR: | |
2090 | warning (_("Remote failure reply: %s"), rs->buf); | |
2091 | break; | |
2092 | case PACKET_UNKNOWN: | |
2093 | break; | |
2094 | } | |
2095 | ||
2096 | return 0; | |
2097 | } | |
2098 | ||
49c62f2e PA |
2099 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2100 | has been invented by GDB, instead of reported by the target. Since | |
2101 | we can be connected to a remote system before before knowing about | |
2102 | any inferior, mark the target with execution when we find the first | |
2103 | inferior. If ATTACHED is 1, then we had just attached to this | |
2104 | inferior. If it is 0, then we just created this inferior. If it | |
2105 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2106 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2107 | attempt to open this inferior's executable as the main executable | |
2108 | if no main executable is open already. */ | |
1941c569 PA |
2109 | |
2110 | static struct inferior * | |
1b6e6f5c GB |
2111 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
2112 | int try_open_exec) | |
1941c569 | 2113 | { |
1941c569 PA |
2114 | struct inferior *inf; |
2115 | ||
0b16c5cf PA |
2116 | /* Check whether this process we're learning about is to be |
2117 | considered attached, or if is to be considered to have been | |
2118 | spawned by the stub. */ | |
2119 | if (attached == -1) | |
2120 | attached = remote_query_attached (pid); | |
2121 | ||
f5656ead | 2122 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2123 | { |
2124 | /* If the target shares code across all inferiors, then every | |
2125 | attach adds a new inferior. */ | |
2126 | inf = add_inferior (pid); | |
2127 | ||
2128 | /* ... and every inferior is bound to the same program space. | |
2129 | However, each inferior may still have its own address | |
2130 | space. */ | |
2131 | inf->aspace = maybe_new_address_space (); | |
2132 | inf->pspace = current_program_space; | |
2133 | } | |
2134 | else | |
2135 | { | |
2136 | /* In the traditional debugging scenario, there's a 1-1 match | |
2137 | between program/address spaces. We simply bind the inferior | |
2138 | to the program space's address space. */ | |
2139 | inf = current_inferior (); | |
2140 | inferior_appeared (inf, pid); | |
2141 | } | |
1941c569 | 2142 | |
0b16c5cf | 2143 | inf->attach_flag = attached; |
49c62f2e | 2144 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2145 | |
1b6e6f5c GB |
2146 | /* If no main executable is currently open then attempt to |
2147 | open the file that was executed to create this inferior. */ | |
835205d0 | 2148 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2149 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2150 | |
1941c569 PA |
2151 | return inf; |
2152 | } | |
2153 | ||
7aabaf9d | 2154 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
85ad3aaf | 2155 | |
1941c569 PA |
2156 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2157 | according to RUNNING. */ | |
2158 | ||
c906108c | 2159 | static void |
0d5b594f | 2160 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 2161 | { |
b7ea362b | 2162 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2163 | struct thread_info *thread; |
b7ea362b PA |
2164 | |
2165 | /* GDB historically didn't pull threads in the initial connection | |
2166 | setup. If the remote target doesn't even have a concept of | |
2167 | threads (e.g., a bare-metal target), even if internally we | |
2168 | consider that a single-threaded target, mentioning a new thread | |
2169 | might be confusing to the user. Be silent then, preserving the | |
2170 | age old behavior. */ | |
2171 | if (rs->starting_up) | |
85ad3aaf | 2172 | thread = add_thread_silent (ptid); |
b7ea362b | 2173 | else |
85ad3aaf | 2174 | thread = add_thread (ptid); |
1941c569 | 2175 | |
7aabaf9d | 2176 | get_remote_thread_info (thread)->vcont_resumed = executing; |
0d5b594f | 2177 | set_executing (ptid, executing); |
1941c569 PA |
2178 | set_running (ptid, running); |
2179 | } | |
2180 | ||
2181 | /* Come here when we learn about a thread id from the remote target. | |
2182 | It may be the first time we hear about such thread, so take the | |
2183 | opportunity to add it to GDB's thread list. In case this is the | |
2184 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2185 | GDB's inferior list as well. EXECUTING indicates whether the |
2186 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
2187 | |
2188 | static void | |
0d5b594f | 2189 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 2190 | { |
0d5b594f PA |
2191 | /* In non-stop mode, we assume new found threads are (externally) |
2192 | running until proven otherwise with a stop reply. In all-stop, | |
2193 | we can only get here if all threads are stopped. */ | |
2194 | int running = target_is_non_stop_p () ? 1 : 0; | |
2195 | ||
c906108c SS |
2196 | /* If this is a new thread, add it to GDB's thread list. |
2197 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
2198 | |
2199 | if (in_thread_list (currthread) && is_exited (currthread)) | |
2200 | { | |
2201 | /* We're seeing an event on a thread id we knew had exited. | |
2202 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2203 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2204 | return; |
2205 | } | |
2206 | ||
79d7f229 | 2207 | if (!in_thread_list (currthread)) |
c0a2216e | 2208 | { |
1941c569 | 2209 | struct inferior *inf = NULL; |
bad34192 | 2210 | int pid = ptid_get_pid (currthread); |
1941c569 | 2211 | |
bad34192 PA |
2212 | if (ptid_is_pid (inferior_ptid) |
2213 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
2214 | { |
2215 | /* inferior_ptid has no thread member yet. This can happen | |
2216 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2217 | stub doesn't support qC. This is the first stop reported | |
2218 | after an attach, so this is the main thread. Update the | |
2219 | ptid in the thread list. */ | |
bad34192 PA |
2220 | if (in_thread_list (pid_to_ptid (pid))) |
2221 | thread_change_ptid (inferior_ptid, currthread); | |
2222 | else | |
2223 | { | |
0d5b594f | 2224 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
2225 | inferior_ptid = currthread; |
2226 | } | |
dc146f7c | 2227 | return; |
c0a2216e | 2228 | } |
82f73884 PA |
2229 | |
2230 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
2231 | { |
2232 | /* inferior_ptid is not set yet. This can happen with the | |
2233 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2234 | doesn't support qC. This is the first stop reported | |
2235 | after an attach, so this is the main thread. Update the | |
2236 | ptid in the thread list. */ | |
dc146f7c | 2237 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 2238 | return; |
c0a2216e | 2239 | } |
82f73884 | 2240 | |
29c87f7f PA |
2241 | /* When connecting to a target remote, or to a target |
2242 | extended-remote which already was debugging an inferior, we | |
2243 | may not know about it yet. Add it before adding its child | |
2244 | thread, so notifications are emitted in a sensible order. */ | |
2245 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
2246 | { |
2247 | struct remote_state *rs = get_remote_state (); | |
2248 | int fake_pid_p = !remote_multi_process_p (rs); | |
2249 | ||
2250 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 2251 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 2252 | } |
29c87f7f | 2253 | |
82f73884 | 2254 | /* This is really a new thread. Add it. */ |
0d5b594f | 2255 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
2256 | |
2257 | /* If we found a new inferior, let the common code do whatever | |
2258 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2259 | breakpoints), unless we're just setting up an all-stop |
2260 | connection. */ | |
1941c569 | 2261 | if (inf != NULL) |
b7ea362b PA |
2262 | { |
2263 | struct remote_state *rs = get_remote_state (); | |
2264 | ||
6efcd9a8 | 2265 | if (!rs->starting_up) |
0d5b594f | 2266 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 2267 | } |
c0a2216e | 2268 | } |
c906108c SS |
2269 | } |
2270 | ||
85ad3aaf | 2271 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2272 | |
7aabaf9d SM |
2273 | static remote_thread_info * |
2274 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2275 | { |
85ad3aaf | 2276 | gdb_assert (thread != NULL); |
dc146f7c | 2277 | |
85ad3aaf | 2278 | if (thread->priv == NULL) |
7aabaf9d | 2279 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2280 | |
7aabaf9d | 2281 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2282 | } |
2283 | ||
2284 | /* Return PTID's private thread data, creating it if necessary. */ | |
2285 | ||
7aabaf9d SM |
2286 | static remote_thread_info * |
2287 | get_remote_thread_info (ptid_t ptid) | |
85ad3aaf PA |
2288 | { |
2289 | struct thread_info *info = find_thread_ptid (ptid); | |
2290 | ||
7aabaf9d | 2291 | return get_remote_thread_info (info); |
dc146f7c VP |
2292 | } |
2293 | ||
74531fed PA |
2294 | /* Call this function as a result of |
2295 | 1) A halt indication (T packet) containing a thread id | |
2296 | 2) A direct query of currthread | |
0df8b418 | 2297 | 3) Successful execution of set thread */ |
74531fed PA |
2298 | |
2299 | static void | |
47f8a51d | 2300 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2301 | { |
47f8a51d | 2302 | rs->general_thread = currthread; |
74531fed PA |
2303 | } |
2304 | ||
89be2091 DJ |
2305 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2306 | it can simply pass through to the inferior without reporting. */ | |
2307 | ||
f6ac5f3d PA |
2308 | void |
2309 | remote_target::pass_signals (int numsigs, unsigned char *pass_signals) | |
89be2091 | 2310 | { |
4082afcc | 2311 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2312 | { |
2313 | char *pass_packet, *p; | |
89be2091 | 2314 | int count = 0, i; |
747dc59d | 2315 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
2316 | |
2317 | gdb_assert (numsigs < 256); | |
2318 | for (i = 0; i < numsigs; i++) | |
2319 | { | |
2455069d | 2320 | if (pass_signals[i]) |
89be2091 DJ |
2321 | count++; |
2322 | } | |
224c3ddb | 2323 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2324 | strcpy (pass_packet, "QPassSignals:"); |
2325 | p = pass_packet + strlen (pass_packet); | |
2326 | for (i = 0; i < numsigs; i++) | |
2327 | { | |
2455069d | 2328 | if (pass_signals[i]) |
89be2091 DJ |
2329 | { |
2330 | if (i >= 16) | |
2331 | *p++ = tohex (i >> 4); | |
2332 | *p++ = tohex (i & 15); | |
2333 | if (count) | |
2334 | *p++ = ';'; | |
2335 | else | |
2336 | break; | |
2337 | count--; | |
2338 | } | |
2339 | } | |
2340 | *p = 0; | |
747dc59d | 2341 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2342 | { |
89be2091 DJ |
2343 | putpkt (pass_packet); |
2344 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2345 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2346 | if (rs->last_pass_packet) |
2347 | xfree (rs->last_pass_packet); | |
2348 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2349 | } |
2350 | else | |
2351 | xfree (pass_packet); | |
2352 | } | |
2353 | } | |
2354 | ||
82075af2 JS |
2355 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2356 | to report syscalls to GDB. */ | |
2357 | ||
f6ac5f3d PA |
2358 | int |
2359 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2360 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2361 | { |
b80406ac | 2362 | const char *catch_packet; |
82075af2 JS |
2363 | enum packet_result result; |
2364 | int n_sysno = 0; | |
2365 | ||
2366 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2367 | { | |
2368 | /* Not supported. */ | |
2369 | return 1; | |
2370 | } | |
2371 | ||
649a140c | 2372 | if (needed && any_count == 0) |
82075af2 | 2373 | { |
649a140c PA |
2374 | /* Count how many syscalls are to be caught. */ |
2375 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2376 | { |
649a140c | 2377 | if (syscall_counts[i] != 0) |
82075af2 JS |
2378 | n_sysno++; |
2379 | } | |
2380 | } | |
2381 | ||
2382 | if (remote_debug) | |
2383 | { | |
2384 | fprintf_unfiltered (gdb_stdlog, | |
2385 | "remote_set_syscall_catchpoint " | |
2386 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2387 | pid, needed, any_count, n_sysno); | |
2388 | } | |
2389 | ||
1b81856f | 2390 | std::string built_packet; |
82075af2 JS |
2391 | if (needed) |
2392 | { | |
2393 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2394 | characters for a sysno. If the resulting packet size is too | |
2395 | big, fallback on the non-selective packet. */ | |
2396 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2397 | built_packet.reserve (maxpktsz); |
2398 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2399 | if (any_count == 0) |
82075af2 | 2400 | { |
649a140c PA |
2401 | /* Add in each syscall to be caught. */ |
2402 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2403 | { |
649a140c PA |
2404 | if (syscall_counts[i] != 0) |
2405 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2406 | } |
2407 | } | |
1b81856f | 2408 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2409 | { |
2410 | /* catch_packet too big. Fallback to less efficient | |
2411 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2412 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2413 | } |
b80406ac | 2414 | else |
1b81856f | 2415 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2416 | } |
2417 | else | |
b80406ac | 2418 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2419 | |
b80406ac | 2420 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2421 | |
b80406ac TT |
2422 | putpkt (catch_packet); |
2423 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2424 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2425 | if (result == PACKET_OK) | |
2426 | return 0; | |
2427 | else | |
2428 | return -1; | |
82075af2 JS |
2429 | } |
2430 | ||
9b224c5e PA |
2431 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2432 | signals it should pass through to the inferior when detaching. */ | |
2433 | ||
f6ac5f3d PA |
2434 | void |
2435 | remote_target::program_signals (int numsigs, unsigned char *signals) | |
9b224c5e | 2436 | { |
4082afcc | 2437 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2438 | { |
2439 | char *packet, *p; | |
2440 | int count = 0, i; | |
5e4a05c4 | 2441 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2442 | |
2443 | gdb_assert (numsigs < 256); | |
2444 | for (i = 0; i < numsigs; i++) | |
2445 | { | |
2446 | if (signals[i]) | |
2447 | count++; | |
2448 | } | |
224c3ddb | 2449 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2450 | strcpy (packet, "QProgramSignals:"); |
2451 | p = packet + strlen (packet); | |
2452 | for (i = 0; i < numsigs; i++) | |
2453 | { | |
2454 | if (signal_pass_state (i)) | |
2455 | { | |
2456 | if (i >= 16) | |
2457 | *p++ = tohex (i >> 4); | |
2458 | *p++ = tohex (i & 15); | |
2459 | if (count) | |
2460 | *p++ = ';'; | |
2461 | else | |
2462 | break; | |
2463 | count--; | |
2464 | } | |
2465 | } | |
2466 | *p = 0; | |
5e4a05c4 TT |
2467 | if (!rs->last_program_signals_packet |
2468 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2469 | { |
9b224c5e PA |
2470 | putpkt (packet); |
2471 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2472 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2473 | xfree (rs->last_program_signals_packet); |
2474 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2475 | } |
2476 | else | |
2477 | xfree (packet); | |
2478 | } | |
2479 | } | |
2480 | ||
79d7f229 PA |
2481 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2482 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2483 | thread. If GEN is set, set the general thread, if not, then set | |
2484 | the step/continue thread. */ | |
c906108c | 2485 | static void |
d62a8ae2 | 2486 | set_thread (ptid_t ptid, int gen) |
c906108c | 2487 | { |
d01949b6 | 2488 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2489 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2490 | char *buf = rs->buf; |
79d7f229 | 2491 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2492 | |
79d7f229 | 2493 | if (ptid_equal (state, ptid)) |
c906108c SS |
2494 | return; |
2495 | ||
79d7f229 PA |
2496 | *buf++ = 'H'; |
2497 | *buf++ = gen ? 'g' : 'c'; | |
2498 | if (ptid_equal (ptid, magic_null_ptid)) | |
2499 | xsnprintf (buf, endbuf - buf, "0"); | |
2500 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2501 | xsnprintf (buf, endbuf - buf, "0"); | |
2502 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2503 | xsnprintf (buf, endbuf - buf, "-1"); | |
2504 | else | |
82f73884 | 2505 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2506 | putpkt (rs->buf); |
6d820c5c | 2507 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2508 | if (gen) |
47f8a51d | 2509 | rs->general_thread = ptid; |
c906108c | 2510 | else |
47f8a51d | 2511 | rs->continue_thread = ptid; |
c906108c | 2512 | } |
79d7f229 PA |
2513 | |
2514 | static void | |
d62a8ae2 | 2515 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2516 | { |
2517 | set_thread (ptid, 1); | |
2518 | } | |
2519 | ||
2520 | static void | |
d62a8ae2 | 2521 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2522 | { |
2523 | set_thread (ptid, 0); | |
2524 | } | |
2525 | ||
3c9c4b83 PA |
2526 | /* Change the remote current process. Which thread within the process |
2527 | ends up selected isn't important, as long as it is the same process | |
2528 | as what INFERIOR_PTID points to. | |
2529 | ||
2530 | This comes from that fact that there is no explicit notion of | |
2531 | "selected process" in the protocol. The selected process for | |
2532 | general operations is the process the selected general thread | |
2533 | belongs to. */ | |
2534 | ||
2535 | static void | |
2536 | set_general_process (void) | |
2537 | { | |
2538 | struct remote_state *rs = get_remote_state (); | |
2539 | ||
2540 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2541 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2542 | return; |
2543 | ||
2544 | /* We only need to change the remote current thread if it's pointing | |
2545 | at some other process. */ | |
47f8a51d | 2546 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2547 | set_general_thread (inferior_ptid); |
2548 | } | |
2549 | ||
c906108c | 2550 | \f |
7d1a114c PA |
2551 | /* Return nonzero if this is the main thread that we made up ourselves |
2552 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2553 | |
2554 | static int | |
f6ac5f3d | 2555 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2556 | { |
c0a2216e PA |
2557 | if (ptid_equal (ptid, magic_null_ptid)) |
2558 | /* The main thread is always alive. */ | |
2559 | return 1; | |
2560 | ||
ba348170 | 2561 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2562 | /* The main thread is always alive. This can happen after a |
2563 | vAttach, if the remote side doesn't support | |
2564 | multi-threading. */ | |
2565 | return 1; | |
2566 | ||
7d1a114c PA |
2567 | return 0; |
2568 | } | |
2569 | ||
2570 | /* Return nonzero if the thread PTID is still alive on the remote | |
2571 | system. */ | |
2572 | ||
57810aa7 | 2573 | bool |
f6ac5f3d | 2574 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2575 | { |
2576 | struct remote_state *rs = get_remote_state (); | |
2577 | char *p, *endp; | |
2578 | ||
2579 | /* Check if this is a thread that we made up ourselves to model | |
2580 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2581 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2582 | return 1; |
2583 | ||
82f73884 PA |
2584 | p = rs->buf; |
2585 | endp = rs->buf + get_remote_packet_size (); | |
2586 | ||
2587 | *p++ = 'T'; | |
2588 | write_ptid (p, endp, ptid); | |
2589 | ||
2e9f7625 | 2590 | putpkt (rs->buf); |
6d820c5c | 2591 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2592 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2593 | } |
2594 | ||
79efa585 SM |
2595 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2596 | The thread_info object owns the memory for the name. */ | |
2597 | ||
f6ac5f3d PA |
2598 | const char * |
2599 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2600 | { |
2601 | if (info->priv != NULL) | |
a9334058 SM |
2602 | { |
2603 | const std::string &name = get_remote_thread_info (info)->name; | |
2604 | return !name.empty () ? name.c_str () : NULL; | |
2605 | } | |
79efa585 SM |
2606 | |
2607 | return NULL; | |
2608 | } | |
2609 | ||
c906108c SS |
2610 | /* About these extended threadlist and threadinfo packets. They are |
2611 | variable length packets but, the fields within them are often fixed | |
2612 | length. They are redundent enough to send over UDP as is the | |
2613 | remote protocol in general. There is a matching unit test module | |
2614 | in libstub. */ | |
2615 | ||
23860348 | 2616 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2617 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2618 | changable. */ |
cce74817 JM |
2619 | |
2620 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2621 | Plan to fix this. */ |
cce74817 | 2622 | |
23860348 | 2623 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2624 | |
9d1f7ab2 | 2625 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2626 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2627 | |
2628 | struct gdb_ext_thread_info | |
c5aa993b | 2629 | { |
23860348 | 2630 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2631 | int active; /* Has state interesting to GDB? |
23860348 | 2632 | regs, stack. */ |
2bc416ba | 2633 | char display[256]; /* Brief state display, name, |
cedea757 | 2634 | blocked/suspended. */ |
23860348 | 2635 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2636 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2637 | whatever. */ |
c5aa993b | 2638 | }; |
cce74817 JM |
2639 | |
2640 | /* The volume of remote transfers can be limited by submitting | |
2641 | a mask containing bits specifying the desired information. | |
2642 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2643 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2644 | |
2645 | #define TAG_THREADID 1 | |
2646 | #define TAG_EXISTS 2 | |
2647 | #define TAG_DISPLAY 4 | |
2648 | #define TAG_THREADNAME 8 | |
c5aa993b | 2649 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2650 | |
23860348 | 2651 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2652 | |
a14ed312 | 2653 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2654 | |
a14ed312 | 2655 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2656 | |
a14ed312 | 2657 | static char *pack_int (char *buf, int value); |
cce74817 | 2658 | |
a14ed312 | 2659 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2660 | |
a14ed312 | 2661 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2662 | |
23860348 | 2663 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2664 | |
23860348 | 2665 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2666 | |
23860348 | 2667 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2668 | |
23860348 | 2669 | static int threadref_to_int (threadref *ref); |
cce74817 | 2670 | |
23860348 | 2671 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2672 | |
23860348 | 2673 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2674 | |
2bc416ba | 2675 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2676 | threadref *id); |
cce74817 | 2677 | |
a14ed312 | 2678 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2679 | threadref *expectedref, |
a14ed312 KB |
2680 | struct gdb_ext_thread_info |
2681 | *info); | |
cce74817 JM |
2682 | |
2683 | ||
2bc416ba | 2684 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2685 | int fieldset, /*TAG mask */ |
a14ed312 | 2686 | struct gdb_ext_thread_info *info); |
cce74817 | 2687 | |
a14ed312 KB |
2688 | static char *pack_threadlist_request (char *pkt, int startflag, |
2689 | int threadcount, | |
23860348 | 2690 | threadref *nextthread); |
cce74817 | 2691 | |
a14ed312 KB |
2692 | static int parse_threadlist_response (char *pkt, |
2693 | int result_limit, | |
23860348 | 2694 | threadref *original_echo, |
2bc416ba | 2695 | threadref *resultlist, |
23860348 | 2696 | int *doneflag); |
cce74817 | 2697 | |
a14ed312 | 2698 | static int remote_get_threadlist (int startflag, |
23860348 | 2699 | threadref *nextthread, |
a14ed312 KB |
2700 | int result_limit, |
2701 | int *done, | |
2bc416ba | 2702 | int *result_count, |
23860348 | 2703 | threadref *threadlist); |
cce74817 | 2704 | |
23860348 | 2705 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2706 | |
a14ed312 KB |
2707 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2708 | void *context, int looplimit); | |
cce74817 | 2709 | |
23860348 | 2710 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2711 | |
82f73884 PA |
2712 | |
2713 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2714 | buffer we're allowed to write to. Returns | |
2715 | BUF+CHARACTERS_WRITTEN. */ | |
2716 | ||
2717 | static char * | |
2718 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2719 | { | |
2720 | int pid, tid; | |
2721 | struct remote_state *rs = get_remote_state (); | |
2722 | ||
2723 | if (remote_multi_process_p (rs)) | |
2724 | { | |
2725 | pid = ptid_get_pid (ptid); | |
2726 | if (pid < 0) | |
2727 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2728 | else | |
2729 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2730 | } | |
ba348170 | 2731 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2732 | if (tid < 0) |
2733 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2734 | else | |
2735 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2736 | ||
2737 | return buf; | |
2738 | } | |
2739 | ||
256642e8 PA |
2740 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2741 | last parsed char. Returns null_ptid if no thread id is found, and | |
2742 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2743 | |
2744 | static ptid_t | |
256642e8 | 2745 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2746 | { |
256642e8 PA |
2747 | const char *p = buf; |
2748 | const char *pp; | |
82f73884 | 2749 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2750 | |
2751 | if (*p == 'p') | |
2752 | { | |
2753 | /* Multi-process ptid. */ | |
2754 | pp = unpack_varlen_hex (p + 1, &pid); | |
2755 | if (*pp != '.') | |
b37520b6 | 2756 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2757 | |
2758 | p = pp; | |
2759 | pp = unpack_varlen_hex (p + 1, &tid); | |
2760 | if (obuf) | |
2761 | *obuf = pp; | |
ba348170 | 2762 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2763 | } |
2764 | ||
2765 | /* No multi-process. Just a tid. */ | |
2766 | pp = unpack_varlen_hex (p, &tid); | |
2767 | ||
c9f35b34 KB |
2768 | /* Return null_ptid when no thread id is found. */ |
2769 | if (p == pp) | |
2770 | { | |
2771 | if (obuf) | |
2772 | *obuf = pp; | |
2773 | return null_ptid; | |
2774 | } | |
2775 | ||
82f73884 | 2776 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2777 | what's in inferior_ptid, unless it's null at this point. If so, |
2778 | then since there's no way to know the pid of the reported | |
2779 | threads, use the magic number. */ | |
2780 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2781 | pid = ptid_get_pid (magic_null_ptid); | |
2782 | else | |
2783 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2784 | |
2785 | if (obuf) | |
2786 | *obuf = pp; | |
ba348170 | 2787 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2788 | } |
2789 | ||
c906108c | 2790 | static int |
fba45db2 | 2791 | stubhex (int ch) |
c906108c SS |
2792 | { |
2793 | if (ch >= 'a' && ch <= 'f') | |
2794 | return ch - 'a' + 10; | |
2795 | if (ch >= '0' && ch <= '9') | |
2796 | return ch - '0'; | |
2797 | if (ch >= 'A' && ch <= 'F') | |
2798 | return ch - 'A' + 10; | |
2799 | return -1; | |
2800 | } | |
2801 | ||
2802 | static int | |
fba45db2 | 2803 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2804 | { |
2805 | int nibble; | |
2806 | int retval = 0; | |
2807 | ||
2808 | while (fieldlength) | |
2809 | { | |
2810 | nibble = stubhex (*buff++); | |
2811 | retval |= nibble; | |
2812 | fieldlength--; | |
2813 | if (fieldlength) | |
2814 | retval = retval << 4; | |
2815 | } | |
2816 | return retval; | |
2817 | } | |
2818 | ||
c906108c | 2819 | static char * |
fba45db2 | 2820 | unpack_nibble (char *buf, int *val) |
c906108c | 2821 | { |
b7589f7d | 2822 | *val = fromhex (*buf++); |
c906108c SS |
2823 | return buf; |
2824 | } | |
2825 | ||
c906108c | 2826 | static char * |
fba45db2 | 2827 | unpack_byte (char *buf, int *value) |
c906108c SS |
2828 | { |
2829 | *value = stub_unpack_int (buf, 2); | |
2830 | return buf + 2; | |
2831 | } | |
2832 | ||
2833 | static char * | |
fba45db2 | 2834 | pack_int (char *buf, int value) |
c906108c SS |
2835 | { |
2836 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2837 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2838 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2839 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2840 | return buf; | |
2841 | } | |
2842 | ||
2843 | static char * | |
fba45db2 | 2844 | unpack_int (char *buf, int *value) |
c906108c SS |
2845 | { |
2846 | *value = stub_unpack_int (buf, 8); | |
2847 | return buf + 8; | |
2848 | } | |
2849 | ||
23860348 | 2850 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2851 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2852 | |
2853 | static char * | |
fba45db2 | 2854 | pack_string (char *pkt, char *string) |
c906108c SS |
2855 | { |
2856 | char ch; | |
2857 | int len; | |
2858 | ||
2859 | len = strlen (string); | |
2860 | if (len > 200) | |
23860348 | 2861 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2862 | pkt = pack_hex_byte (pkt, len); |
2863 | while (len-- > 0) | |
2864 | { | |
2865 | ch = *string++; | |
2866 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2867 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2868 | *pkt++ = ch; |
2869 | } | |
2870 | return pkt; | |
2871 | } | |
2872 | #endif /* 0 (unused) */ | |
2873 | ||
2874 | static char * | |
fba45db2 | 2875 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2876 | { |
2877 | while (length--) | |
2878 | *dest++ = *src++; | |
2879 | *dest = '\0'; | |
2880 | return src; | |
2881 | } | |
2882 | ||
2883 | static char * | |
fba45db2 | 2884 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2885 | { |
2886 | char *limit; | |
2887 | unsigned char *altid; | |
2888 | ||
2889 | altid = (unsigned char *) id; | |
2890 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2891 | while (pkt < limit) | |
2892 | pkt = pack_hex_byte (pkt, *altid++); | |
2893 | return pkt; | |
2894 | } | |
2895 | ||
2896 | ||
2897 | static char * | |
fba45db2 | 2898 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2899 | { |
2900 | char *altref; | |
2901 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2902 | int x, y; | |
2903 | ||
2904 | altref = (char *) id; | |
2905 | ||
2906 | while (inbuf < limit) | |
2907 | { | |
2908 | x = stubhex (*inbuf++); | |
2909 | y = stubhex (*inbuf++); | |
2910 | *altref++ = (x << 4) | y; | |
2911 | } | |
2912 | return inbuf; | |
2913 | } | |
2914 | ||
2915 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2916 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2917 | to use 64bit thread references internally. This is an adapter |
2918 | function. */ | |
2919 | ||
2920 | void | |
fba45db2 | 2921 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2922 | { |
2923 | unsigned char *scan; | |
2924 | ||
2925 | scan = (unsigned char *) id; | |
2926 | { | |
2927 | int i = 4; | |
2928 | while (i--) | |
2929 | *scan++ = 0; | |
2930 | } | |
2931 | *scan++ = (value >> 24) & 0xff; | |
2932 | *scan++ = (value >> 16) & 0xff; | |
2933 | *scan++ = (value >> 8) & 0xff; | |
2934 | *scan++ = (value & 0xff); | |
2935 | } | |
2936 | ||
2937 | static int | |
fba45db2 | 2938 | threadref_to_int (threadref *ref) |
c906108c SS |
2939 | { |
2940 | int i, value = 0; | |
2941 | unsigned char *scan; | |
2942 | ||
cfd77fa1 | 2943 | scan = *ref; |
c906108c SS |
2944 | scan += 4; |
2945 | i = 4; | |
2946 | while (i-- > 0) | |
2947 | value = (value << 8) | ((*scan++) & 0xff); | |
2948 | return value; | |
2949 | } | |
2950 | ||
2951 | static void | |
fba45db2 | 2952 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2953 | { |
2954 | int i; | |
2955 | unsigned char *csrc, *cdest; | |
2956 | ||
2957 | csrc = (unsigned char *) src; | |
2958 | cdest = (unsigned char *) dest; | |
2959 | i = 8; | |
2960 | while (i--) | |
2961 | *cdest++ = *csrc++; | |
2962 | } | |
2963 | ||
2964 | static int | |
fba45db2 | 2965 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2966 | { |
23860348 | 2967 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2968 | #if 0 |
2969 | unsigned char *srcp, *destp; | |
2970 | int i, result; | |
2971 | srcp = (char *) src; | |
2972 | destp = (char *) dest; | |
2973 | ||
2974 | result = 1; | |
2975 | while (i-- > 0) | |
2976 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2977 | return result; | |
2978 | #endif | |
2979 | return 1; | |
2980 | } | |
2981 | ||
2982 | /* | |
c5aa993b JM |
2983 | threadid:1, # always request threadid |
2984 | context_exists:2, | |
2985 | display:4, | |
2986 | unique_name:8, | |
2987 | more_display:16 | |
2988 | */ | |
c906108c SS |
2989 | |
2990 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2991 | ||
2992 | static char * | |
fba45db2 | 2993 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2994 | { |
23860348 MS |
2995 | *pkt++ = 'q'; /* Info Query */ |
2996 | *pkt++ = 'P'; /* process or thread info */ | |
2997 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2998 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2999 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3000 | return pkt; |
3001 | } | |
3002 | ||
23860348 | 3003 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3004 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3005 | add more fields as time goes by. */ |
c906108c | 3006 | |
23860348 | 3007 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3008 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3009 | fetch registers and its stack? */ |
c5aa993b | 3010 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3011 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3012 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3013 | the process. */ |
c906108c SS |
3014 | |
3015 | static int | |
fba45db2 KB |
3016 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
3017 | struct gdb_ext_thread_info *info) | |
c906108c | 3018 | { |
d01949b6 | 3019 | struct remote_state *rs = get_remote_state (); |
c906108c | 3020 | int mask, length; |
cfd77fa1 | 3021 | int tag; |
c906108c | 3022 | threadref ref; |
6d820c5c | 3023 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
3024 | int retval = 1; |
3025 | ||
23860348 | 3026 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3027 | info->active = 0; |
3028 | info->display[0] = '\0'; | |
3029 | info->shortname[0] = '\0'; | |
3030 | info->more_display[0] = '\0'; | |
3031 | ||
23860348 MS |
3032 | /* Assume the characters indicating the packet type have been |
3033 | stripped. */ | |
c906108c SS |
3034 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3035 | pkt = unpack_threadid (pkt, &ref); | |
3036 | ||
3037 | if (mask == 0) | |
8a3fe4f8 | 3038 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3039 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3040 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3041 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3042 | return 0; |
3043 | } | |
3044 | copy_threadref (&info->threadid, &ref); | |
3045 | ||
23860348 | 3046 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 3047 | |
23860348 MS |
3048 | /* Packets are terminated with nulls. */ |
3049 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3050 | { |
3051 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3052 | pkt = unpack_byte (pkt, &length); /* length */ |
3053 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3054 | { |
8a3fe4f8 | 3055 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3056 | retval = 0; |
3057 | break; | |
3058 | } | |
3059 | if (tag == TAG_THREADID) | |
3060 | { | |
3061 | if (length != 16) | |
3062 | { | |
8a3fe4f8 | 3063 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3064 | retval = 0; |
3065 | break; | |
3066 | } | |
3067 | pkt = unpack_threadid (pkt, &ref); | |
3068 | mask = mask & ~TAG_THREADID; | |
3069 | continue; | |
3070 | } | |
3071 | if (tag == TAG_EXISTS) | |
3072 | { | |
3073 | info->active = stub_unpack_int (pkt, length); | |
3074 | pkt += length; | |
3075 | mask = mask & ~(TAG_EXISTS); | |
3076 | if (length > 8) | |
3077 | { | |
8a3fe4f8 | 3078 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3079 | retval = 0; |
3080 | break; | |
3081 | } | |
3082 | continue; | |
3083 | } | |
3084 | if (tag == TAG_THREADNAME) | |
3085 | { | |
3086 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3087 | mask = mask & ~TAG_THREADNAME; | |
3088 | continue; | |
3089 | } | |
3090 | if (tag == TAG_DISPLAY) | |
3091 | { | |
3092 | pkt = unpack_string (pkt, &info->display[0], length); | |
3093 | mask = mask & ~TAG_DISPLAY; | |
3094 | continue; | |
3095 | } | |
3096 | if (tag == TAG_MOREDISPLAY) | |
3097 | { | |
3098 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3099 | mask = mask & ~TAG_MOREDISPLAY; | |
3100 | continue; | |
3101 | } | |
8a3fe4f8 | 3102 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3103 | break; /* Not a tag we know about. */ |
c906108c SS |
3104 | } |
3105 | return retval; | |
3106 | } | |
3107 | ||
3108 | static int | |
fba45db2 KB |
3109 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
3110 | struct gdb_ext_thread_info *info) | |
c906108c | 3111 | { |
d01949b6 | 3112 | struct remote_state *rs = get_remote_state (); |
c906108c | 3113 | int result; |
c906108c | 3114 | |
2e9f7625 DJ |
3115 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
3116 | putpkt (rs->buf); | |
6d820c5c | 3117 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
3118 | |
3119 | if (rs->buf[0] == '\0') | |
3120 | return 0; | |
3121 | ||
2e9f7625 | 3122 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 3123 | threadid, info); |
c906108c SS |
3124 | return result; |
3125 | } | |
3126 | ||
c906108c SS |
3127 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3128 | ||
3129 | static char * | |
fba45db2 KB |
3130 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3131 | threadref *nextthread) | |
c906108c SS |
3132 | { |
3133 | *pkt++ = 'q'; /* info query packet */ | |
3134 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3135 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3136 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3137 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3138 | *pkt = '\0'; | |
3139 | return pkt; | |
3140 | } | |
3141 | ||
3142 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3143 | ||
3144 | static int | |
fba45db2 KB |
3145 | parse_threadlist_response (char *pkt, int result_limit, |
3146 | threadref *original_echo, threadref *resultlist, | |
3147 | int *doneflag) | |
c906108c | 3148 | { |
d01949b6 | 3149 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3150 | char *limit; |
3151 | int count, resultcount, done; | |
3152 | ||
3153 | resultcount = 0; | |
3154 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 3155 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 3156 | /* done parse past here */ |
c906108c SS |
3157 | pkt = unpack_byte (pkt, &count); /* count field */ |
3158 | pkt = unpack_nibble (pkt, &done); | |
3159 | /* The first threadid is the argument threadid. */ | |
3160 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3161 | while ((count-- > 0) && (pkt < limit)) | |
3162 | { | |
3163 | pkt = unpack_threadid (pkt, resultlist++); | |
3164 | if (resultcount++ >= result_limit) | |
3165 | break; | |
3166 | } | |
3167 | if (doneflag) | |
3168 | *doneflag = done; | |
3169 | return resultcount; | |
3170 | } | |
3171 | ||
6dc54d91 PA |
3172 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3173 | qL packet is not supported, 0 on error and 1 on success. */ | |
3174 | ||
c906108c | 3175 | static int |
fba45db2 KB |
3176 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
3177 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 3178 | { |
d01949b6 | 3179 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3180 | int result = 1; |
3181 | ||
23860348 | 3182 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3183 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3184 | >= get_remote_packet_size ()) | |
ea9c271d | 3185 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3186 | |
6d820c5c DJ |
3187 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
3188 | putpkt (rs->buf); | |
3189 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 3190 | if (*rs->buf == '\0') |
6dc54d91 PA |
3191 | { |
3192 | /* Packet not supported. */ | |
3193 | return -1; | |
3194 | } | |
3195 | ||
3196 | *result_count = | |
3197 | parse_threadlist_response (rs->buf + 2, result_limit, | |
3198 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 3199 | |
0d031856 | 3200 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3201 | { |
23860348 MS |
3202 | /* FIXME: This is a good reason to drop the packet. */ |
3203 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
3204 | /* Possabilities : |
3205 | retransmit immediatly - race conditions | |
3206 | retransmit after timeout - yes | |
3207 | exit | |
3208 | wait for packet, then exit | |
3209 | */ | |
8a3fe4f8 | 3210 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3211 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3212 | } |
3213 | if (*result_count <= 0) | |
3214 | { | |
3215 | if (*done != 1) | |
3216 | { | |
8a3fe4f8 | 3217 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3218 | result = 0; |
3219 | } | |
3220 | return result; /* break; */ | |
3221 | } | |
3222 | if (*result_count > result_limit) | |
3223 | { | |
3224 | *result_count = 0; | |
8a3fe4f8 | 3225 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3226 | return 0; |
3227 | } | |
3228 | return result; | |
3229 | } | |
3230 | ||
6dc54d91 PA |
3231 | /* Fetch the list of remote threads, with the qL packet, and call |
3232 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3233 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3234 | STEPFUNCTION returns false. If the packet is not supported, | |
3235 | returns -1. */ | |
c906108c | 3236 | |
c906108c | 3237 | static int |
fba45db2 KB |
3238 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
3239 | int looplimit) | |
c906108c | 3240 | { |
0d031856 | 3241 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3242 | int done, i, result_count; |
3243 | int startflag = 1; | |
3244 | int result = 1; | |
3245 | int loopcount = 0; | |
c906108c SS |
3246 | |
3247 | done = 0; | |
3248 | while (!done) | |
3249 | { | |
3250 | if (loopcount++ > looplimit) | |
3251 | { | |
3252 | result = 0; | |
8a3fe4f8 | 3253 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3254 | break; |
3255 | } | |
6dc54d91 PA |
3256 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3257 | MAXTHREADLISTRESULTS, | |
3258 | &done, &result_count, | |
3259 | rs->resultthreadlist); | |
3260 | if (result <= 0) | |
3261 | break; | |
23860348 | 3262 | /* Clear for later iterations. */ |
c906108c SS |
3263 | startflag = 0; |
3264 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3265 | if (result_count >= 1) | |
0d031856 TT |
3266 | copy_threadref (&rs->nextthread, |
3267 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3268 | i = 0; |
3269 | while (result_count--) | |
6dc54d91 PA |
3270 | { |
3271 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3272 | { | |
3273 | result = 0; | |
3274 | break; | |
3275 | } | |
3276 | } | |
c906108c SS |
3277 | } |
3278 | return result; | |
3279 | } | |
3280 | ||
6dc54d91 PA |
3281 | /* A thread found on the remote target. */ |
3282 | ||
21fe1c75 | 3283 | struct thread_item |
6dc54d91 | 3284 | { |
21fe1c75 SM |
3285 | explicit thread_item (ptid_t ptid_) |
3286 | : ptid (ptid_) | |
3287 | {} | |
3288 | ||
3289 | thread_item (thread_item &&other) = default; | |
3290 | thread_item &operator= (thread_item &&other) = default; | |
3291 | ||
3292 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3293 | ||
6dc54d91 PA |
3294 | /* The thread's PTID. */ |
3295 | ptid_t ptid; | |
3296 | ||
21fe1c75 SM |
3297 | /* The thread's extra info. */ |
3298 | std::string extra; | |
6dc54d91 | 3299 | |
21fe1c75 SM |
3300 | /* The thread's name. */ |
3301 | std::string name; | |
79efa585 | 3302 | |
6dc54d91 | 3303 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3304 | int core = -1; |
f6327dcb KB |
3305 | |
3306 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3307 | gdb::byte_vector thread_handle; |
21fe1c75 | 3308 | }; |
6dc54d91 PA |
3309 | |
3310 | /* Context passed around to the various methods listing remote | |
3311 | threads. As new threads are found, they're added to the ITEMS | |
3312 | vector. */ | |
3313 | ||
3314 | struct threads_listing_context | |
3315 | { | |
21fe1c75 SM |
3316 | /* Return true if this object contains an entry for a thread with ptid |
3317 | PTID. */ | |
6dc54d91 | 3318 | |
21fe1c75 SM |
3319 | bool contains_thread (ptid_t ptid) const |
3320 | { | |
3321 | auto match_ptid = [&] (const thread_item &item) | |
3322 | { | |
3323 | return item.ptid == ptid; | |
3324 | }; | |
80134cf5 | 3325 | |
21fe1c75 SM |
3326 | auto it = std::find_if (this->items.begin (), |
3327 | this->items.end (), | |
3328 | match_ptid); | |
80134cf5 | 3329 | |
21fe1c75 SM |
3330 | return it != this->items.end (); |
3331 | } | |
80134cf5 | 3332 | |
21fe1c75 | 3333 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3334 | |
21fe1c75 SM |
3335 | void remove_thread (ptid_t ptid) |
3336 | { | |
3337 | auto match_ptid = [&] (const thread_item &item) | |
3338 | { | |
3339 | return item.ptid == ptid; | |
3340 | }; | |
cbb8991c | 3341 | |
21fe1c75 SM |
3342 | auto it = std::remove_if (this->items.begin (), |
3343 | this->items.end (), | |
3344 | match_ptid); | |
cbb8991c | 3345 | |
21fe1c75 SM |
3346 | if (it != this->items.end ()) |
3347 | this->items.erase (it); | |
3348 | } | |
3349 | ||
3350 | /* The threads found on the remote target. */ | |
3351 | std::vector<thread_item> items; | |
3352 | }; | |
cbb8991c | 3353 | |
c906108c | 3354 | static int |
6dc54d91 | 3355 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3356 | { |
19ba03f4 SM |
3357 | struct threads_listing_context *context |
3358 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3359 | int pid = inferior_ptid.pid (); |
3360 | int lwp = threadref_to_int (ref); | |
3361 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3362 | |
21fe1c75 | 3363 | context->items.emplace_back (ptid); |
6dc54d91 | 3364 | |
c906108c SS |
3365 | return 1; /* continue iterator */ |
3366 | } | |
3367 | ||
3368 | #define CRAZY_MAX_THREADS 1000 | |
3369 | ||
39f77062 KB |
3370 | static ptid_t |
3371 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3372 | { |
d01949b6 | 3373 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3374 | |
3375 | putpkt ("qC"); | |
6d820c5c | 3376 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3377 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3378 | { |
256642e8 | 3379 | const char *obuf; |
c9f35b34 KB |
3380 | ptid_t result; |
3381 | ||
3382 | result = read_ptid (&rs->buf[2], &obuf); | |
3383 | if (*obuf != '\0' && remote_debug) | |
3384 | fprintf_unfiltered (gdb_stdlog, | |
3385 | "warning: garbage in qC reply\n"); | |
3386 | ||
3387 | return result; | |
3388 | } | |
c906108c SS |
3389 | else |
3390 | return oldpid; | |
3391 | } | |
3392 | ||
6dc54d91 | 3393 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3394 | |
6dc54d91 PA |
3395 | static int |
3396 | remote_get_threads_with_ql (struct target_ops *ops, | |
3397 | struct threads_listing_context *context) | |
c906108c | 3398 | { |
6dc54d91 PA |
3399 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3400 | CRAZY_MAX_THREADS) >= 0) | |
3401 | return 1; | |
3402 | ||
3403 | return 0; | |
c906108c SS |
3404 | } |
3405 | ||
dc146f7c VP |
3406 | #if defined(HAVE_LIBEXPAT) |
3407 | ||
dc146f7c VP |
3408 | static void |
3409 | start_thread (struct gdb_xml_parser *parser, | |
3410 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3411 | void *user_data, |
3412 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3413 | { |
19ba03f4 SM |
3414 | struct threads_listing_context *data |
3415 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3416 | struct gdb_xml_value *attr; |
dc146f7c | 3417 | |
4d0fdd9b | 3418 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3419 | ptid_t ptid = read_ptid (id, NULL); |
3420 | ||
3421 | data->items.emplace_back (ptid); | |
3422 | thread_item &item = data->items.back (); | |
dc146f7c | 3423 | |
3d2c1d41 PA |
3424 | attr = xml_find_attribute (attributes, "core"); |
3425 | if (attr != NULL) | |
4d0fdd9b | 3426 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3427 | |
79efa585 | 3428 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3429 | if (attr != NULL) |
4d0fdd9b | 3430 | item.name = (const char *) attr->value.get (); |
79efa585 | 3431 | |
f6327dcb KB |
3432 | attr = xml_find_attribute (attributes, "handle"); |
3433 | if (attr != NULL) | |
4d0fdd9b | 3434 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3435 | } |
3436 | ||
3437 | static void | |
3438 | end_thread (struct gdb_xml_parser *parser, | |
3439 | const struct gdb_xml_element *element, | |
3440 | void *user_data, const char *body_text) | |
3441 | { | |
19ba03f4 SM |
3442 | struct threads_listing_context *data |
3443 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3444 | |
21fe1c75 SM |
3445 | if (body_text != NULL && *body_text != '\0') |
3446 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3447 | } |
3448 | ||
3449 | const struct gdb_xml_attribute thread_attributes[] = { | |
3450 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3451 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3452 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3453 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3454 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3455 | }; | |
3456 | ||
3457 | const struct gdb_xml_element thread_children[] = { | |
3458 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3459 | }; | |
3460 | ||
3461 | const struct gdb_xml_element threads_children[] = { | |
3462 | { "thread", thread_attributes, thread_children, | |
3463 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3464 | start_thread, end_thread }, | |
3465 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3466 | }; | |
3467 | ||
3468 | const struct gdb_xml_element threads_elements[] = { | |
3469 | { "threads", NULL, threads_children, | |
3470 | GDB_XML_EF_NONE, NULL, NULL }, | |
3471 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3472 | }; | |
3473 | ||
3474 | #endif | |
3475 | ||
6dc54d91 | 3476 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3477 | |
6dc54d91 PA |
3478 | static int |
3479 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3480 | struct threads_listing_context *context) | |
0f71a2f6 | 3481 | { |
dc146f7c | 3482 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3483 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3484 | { |
9018be22 | 3485 | gdb::optional<gdb::char_vector> xml |
b7b030ad | 3486 | = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3487 | |
9018be22 | 3488 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3489 | { |
6dc54d91 | 3490 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3491 | threads_elements, xml->data (), context); |
dc146f7c VP |
3492 | } |
3493 | ||
6dc54d91 | 3494 | return 1; |
dc146f7c VP |
3495 | } |
3496 | #endif | |
3497 | ||
6dc54d91 PA |
3498 | return 0; |
3499 | } | |
3500 | ||
3501 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3502 | ||
3503 | static int | |
3504 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3505 | struct threads_listing_context *context) | |
3506 | { | |
3507 | struct remote_state *rs = get_remote_state (); | |
3508 | ||
b80fafe3 | 3509 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3510 | { |
256642e8 | 3511 | const char *bufp; |
6dc54d91 | 3512 | |
9d1f7ab2 | 3513 | putpkt ("qfThreadInfo"); |
6d820c5c | 3514 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3515 | bufp = rs->buf; |
9d1f7ab2 | 3516 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3517 | { |
9d1f7ab2 MS |
3518 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3519 | { | |
3520 | do | |
3521 | { | |
21fe1c75 SM |
3522 | ptid_t ptid = read_ptid (bufp, &bufp); |
3523 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3524 | } |
3525 | while (*bufp++ == ','); /* comma-separated list */ | |
3526 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3527 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3528 | bufp = rs->buf; |
9d1f7ab2 | 3529 | } |
6dc54d91 PA |
3530 | return 1; |
3531 | } | |
3532 | else | |
3533 | { | |
3534 | /* Packet not recognized. */ | |
3535 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3536 | } |
3537 | } | |
3538 | ||
6dc54d91 PA |
3539 | return 0; |
3540 | } | |
3541 | ||
e8032dde | 3542 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3543 | targets. */ |
3544 | ||
f6ac5f3d PA |
3545 | void |
3546 | remote_target::update_thread_list () | |
6dc54d91 | 3547 | { |
6dc54d91 | 3548 | struct threads_listing_context context; |
ab970af1 | 3549 | int got_list = 0; |
e8032dde | 3550 | |
6dc54d91 PA |
3551 | /* We have a few different mechanisms to fetch the thread list. Try |
3552 | them all, starting with the most preferred one first, falling | |
3553 | back to older methods. */ | |
f6ac5f3d PA |
3554 | if (remote_get_threads_with_qxfer (this, &context) |
3555 | || remote_get_threads_with_qthreadinfo (this, &context) | |
3556 | || remote_get_threads_with_ql (this, &context)) | |
6dc54d91 | 3557 | { |
ab970af1 PA |
3558 | struct thread_info *tp, *tmp; |
3559 | ||
3560 | got_list = 1; | |
3561 | ||
21fe1c75 | 3562 | if (context.items.empty () |
f6ac5f3d | 3563 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3564 | { |
3565 | /* Some targets don't really support threads, but still | |
3566 | reply an (empty) thread list in response to the thread | |
3567 | listing packets, instead of replying "packet not | |
3568 | supported". Exit early so we don't delete the main | |
3569 | thread. */ | |
7d1a114c PA |
3570 | return; |
3571 | } | |
3572 | ||
ab970af1 PA |
3573 | /* CONTEXT now holds the current thread list on the remote |
3574 | target end. Delete GDB-side threads no longer found on the | |
3575 | target. */ | |
8a06aea7 | 3576 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3577 | { |
21fe1c75 | 3578 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3579 | { |
3580 | /* Not found. */ | |
3581 | delete_thread (tp->ptid); | |
3582 | } | |
cbb8991c DB |
3583 | } |
3584 | ||
3585 | /* Remove any unreported fork child threads from CONTEXT so | |
3586 | that we don't interfere with follow fork, which is where | |
3587 | creation of such threads is handled. */ | |
3588 | remove_new_fork_children (&context); | |
74531fed | 3589 | |
ab970af1 | 3590 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3591 | for (thread_item &item : context.items) |
6dc54d91 | 3592 | { |
21fe1c75 | 3593 | if (item.ptid != null_ptid) |
6dc54d91 | 3594 | { |
6dc54d91 | 3595 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3596 | executing until proven otherwise with a stop reply. |
3597 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3598 | stopped. */ |
0d5b594f | 3599 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3600 | |
21fe1c75 | 3601 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3602 | |
7aabaf9d | 3603 | remote_thread_info *info = get_remote_thread_info (item.ptid); |
21fe1c75 | 3604 | info->core = item.core; |
7aabaf9d SM |
3605 | info->extra = std::move (item.extra); |
3606 | info->name = std::move (item.name); | |
3607 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3608 | } |
3609 | } | |
3610 | } | |
3611 | ||
ab970af1 PA |
3612 | if (!got_list) |
3613 | { | |
3614 | /* If no thread listing method is supported, then query whether | |
3615 | each known thread is alive, one by one, with the T packet. | |
3616 | If the target doesn't support threads at all, then this is a | |
3617 | no-op. See remote_thread_alive. */ | |
3618 | prune_threads (); | |
3619 | } | |
9d1f7ab2 MS |
3620 | } |
3621 | ||
802188a7 | 3622 | /* |
9d1f7ab2 MS |
3623 | * Collect a descriptive string about the given thread. |
3624 | * The target may say anything it wants to about the thread | |
3625 | * (typically info about its blocked / runnable state, name, etc.). | |
3626 | * This string will appear in the info threads display. | |
802188a7 | 3627 | * |
9d1f7ab2 MS |
3628 | * Optional: targets are not required to implement this function. |
3629 | */ | |
3630 | ||
f6ac5f3d PA |
3631 | const char * |
3632 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3633 | { |
d01949b6 | 3634 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3635 | int result; |
3636 | int set; | |
3637 | threadref id; | |
3638 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3639 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3640 | int n = 0; /* position in display_buf */ |
3641 | ||
5d93a237 | 3642 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3643 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3644 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3645 | |
60e569b9 | 3646 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3647 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3648 | /* This is the main thread which was added by GDB. The remote |
3649 | server doesn't know about it. */ | |
3650 | return NULL; | |
3651 | ||
4082afcc | 3652 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3653 | { |
3654 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3655 | |
7aabaf9d | 3656 | if (info != NULL && info->priv != NULL) |
a9334058 SM |
3657 | { |
3658 | const std::string &extra = get_remote_thread_info (info)->extra; | |
3659 | return !extra.empty () ? extra.c_str () : NULL; | |
3660 | } | |
dc146f7c VP |
3661 | else |
3662 | return NULL; | |
3663 | } | |
3664 | ||
b80fafe3 | 3665 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3666 | { |
82f73884 PA |
3667 | char *b = rs->buf; |
3668 | char *endb = rs->buf + get_remote_packet_size (); | |
3669 | ||
3670 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3671 | b += strlen (b); | |
3672 | write_ptid (b, endb, tp->ptid); | |
3673 | ||
2e9f7625 | 3674 | putpkt (rs->buf); |
6d820c5c | 3675 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3676 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3677 | { |
325fac50 | 3678 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3679 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3680 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3681 | return display_buf; |
3682 | } | |
0f71a2f6 | 3683 | } |
9d1f7ab2 MS |
3684 | |
3685 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3686 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3687 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3688 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3689 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3690 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3691 | if (threadinfo.active) | |
0f71a2f6 | 3692 | { |
9d1f7ab2 | 3693 | if (*threadinfo.shortname) |
2bc416ba | 3694 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3695 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3696 | if (*threadinfo.display) |
2bc416ba | 3697 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3698 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3699 | if (*threadinfo.more_display) |
2bc416ba | 3700 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3701 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3702 | |
3703 | if (n > 0) | |
c5aa993b | 3704 | { |
23860348 | 3705 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3706 | if (',' == display_buf[n-1]) |
3707 | display_buf[n-1] = ' '; | |
3708 | return display_buf; | |
c5aa993b | 3709 | } |
0f71a2f6 | 3710 | } |
9d1f7ab2 | 3711 | return NULL; |
0f71a2f6 | 3712 | } |
c906108c | 3713 | \f |
c5aa993b | 3714 | |
f6ac5f3d PA |
3715 | bool |
3716 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3717 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3718 | { |
3719 | struct remote_state *rs = get_remote_state (); | |
3720 | char *p = rs->buf; | |
3721 | ||
bba74b36 | 3722 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3723 | p += strlen (p); |
3724 | p += hexnumstr (p, addr); | |
3725 | putpkt (rs->buf); | |
3726 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3727 | p = rs->buf; | |
3728 | ||
3729 | if (*p == 'E') | |
3730 | error (_("Remote failure reply: %s"), p); | |
3731 | ||
3732 | if (*p++ == 'm') | |
3733 | { | |
256642e8 | 3734 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3735 | return true; |
0fb4aa4b PA |
3736 | } |
3737 | ||
5d9310c4 | 3738 | return false; |
0fb4aa4b PA |
3739 | } |
3740 | ||
f6ac5f3d PA |
3741 | std::vector<static_tracepoint_marker> |
3742 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
3743 | { |
3744 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3745 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3746 | const char *p; |
5d9310c4 | 3747 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3748 | |
3749 | /* Ask for a first packet of static tracepoint marker | |
3750 | definition. */ | |
3751 | putpkt ("qTfSTM"); | |
3752 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3753 | p = rs->buf; | |
3754 | if (*p == 'E') | |
3755 | error (_("Remote failure reply: %s"), p); | |
3756 | ||
0fb4aa4b PA |
3757 | while (*p++ == 'm') |
3758 | { | |
0fb4aa4b PA |
3759 | do |
3760 | { | |
5d9310c4 | 3761 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 3762 | |
5d9310c4 SM |
3763 | if (strid == NULL || marker.str_id == strid) |
3764 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
3765 | } |
3766 | while (*p++ == ','); /* comma-separated list */ | |
3767 | /* Ask for another packet of static tracepoint definition. */ | |
3768 | putpkt ("qTsSTM"); | |
3769 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3770 | p = rs->buf; | |
3771 | } | |
3772 | ||
0fb4aa4b PA |
3773 | return markers; |
3774 | } | |
3775 | ||
3776 | \f | |
10760264 JB |
3777 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3778 | ||
f6ac5f3d PA |
3779 | ptid_t |
3780 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 3781 | { |
ba348170 | 3782 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3783 | } |
3784 | \f | |
3785 | ||
24b06219 | 3786 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3787 | |
3788 | static void | |
fba45db2 | 3789 | extended_remote_restart (void) |
c906108c | 3790 | { |
d01949b6 | 3791 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3792 | |
3793 | /* Send the restart command; for reasons I don't understand the | |
3794 | remote side really expects a number after the "R". */ | |
ea9c271d | 3795 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3796 | putpkt (rs->buf); |
c906108c | 3797 | |
ad9a8f3f | 3798 | remote_fileio_reset (); |
c906108c SS |
3799 | } |
3800 | \f | |
3801 | /* Clean up connection to a remote debugger. */ | |
3802 | ||
f6ac5f3d PA |
3803 | void |
3804 | remote_target::close () | |
c906108c | 3805 | { |
5d93a237 TT |
3806 | struct remote_state *rs = get_remote_state (); |
3807 | ||
3808 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3809 | return; /* already closed */ |
3810 | ||
048094ac | 3811 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 3812 | terminal_ours (); |
ce5ce7ed | 3813 | |
5d93a237 TT |
3814 | serial_close (rs->remote_desc); |
3815 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3816 | |
3817 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3818 | of all the inferiors and their threads we were controlling. |
3819 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3820 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3821 | inferior_ptid = null_ptid; |
f67fd822 | 3822 | discard_all_inferiors (); |
ce5ce7ed | 3823 | |
f48ff2a7 YQ |
3824 | /* We are closing the remote target, so we should discard |
3825 | everything of this target. */ | |
bcc75809 | 3826 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3827 | |
3828 | if (remote_async_inferior_event_token) | |
3829 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3830 | |
5965e028 | 3831 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3832 | |
3833 | trace_reset_local_state (); | |
c906108c SS |
3834 | } |
3835 | ||
23860348 | 3836 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3837 | |
3838 | static void | |
fba45db2 | 3839 | get_offsets (void) |
c906108c | 3840 | { |
d01949b6 | 3841 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3842 | char *buf; |
085dd6e6 | 3843 | char *ptr; |
31d99776 DJ |
3844 | int lose, num_segments = 0, do_sections, do_segments; |
3845 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3846 | struct section_offsets *offs; |
31d99776 DJ |
3847 | struct symfile_segment_data *data; |
3848 | ||
3849 | if (symfile_objfile == NULL) | |
3850 | return; | |
c906108c SS |
3851 | |
3852 | putpkt ("qOffsets"); | |
6d820c5c | 3853 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3854 | buf = rs->buf; |
c906108c SS |
3855 | |
3856 | if (buf[0] == '\000') | |
3857 | return; /* Return silently. Stub doesn't support | |
23860348 | 3858 | this command. */ |
c906108c SS |
3859 | if (buf[0] == 'E') |
3860 | { | |
8a3fe4f8 | 3861 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3862 | return; |
3863 | } | |
3864 | ||
3865 | /* Pick up each field in turn. This used to be done with scanf, but | |
3866 | scanf will make trouble if CORE_ADDR size doesn't match | |
3867 | conversion directives correctly. The following code will work | |
3868 | with any size of CORE_ADDR. */ | |
3869 | text_addr = data_addr = bss_addr = 0; | |
3870 | ptr = buf; | |
3871 | lose = 0; | |
3872 | ||
61012eef | 3873 | if (startswith (ptr, "Text=")) |
c906108c SS |
3874 | { |
3875 | ptr += 5; | |
3876 | /* Don't use strtol, could lose on big values. */ | |
3877 | while (*ptr && *ptr != ';') | |
3878 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3879 | |
61012eef | 3880 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3881 | { |
3882 | ptr += 6; | |
3883 | while (*ptr && *ptr != ';') | |
3884 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3885 | } | |
3886 | else | |
3887 | lose = 1; | |
3888 | ||
61012eef | 3889 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3890 | { |
3891 | ptr += 5; | |
3892 | while (*ptr && *ptr != ';') | |
3893 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3894 | |
31d99776 DJ |
3895 | if (bss_addr != data_addr) |
3896 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3897 | } | |
3898 | else | |
3899 | lose = 1; | |
3900 | } | |
61012eef | 3901 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3902 | { |
31d99776 DJ |
3903 | ptr += 8; |
3904 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3905 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3906 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3907 | num_segments = 1; | |
3908 | ||
61012eef | 3909 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3910 | { |
3911 | ptr += 9; | |
3912 | while (*ptr && *ptr != ';') | |
3913 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3914 | num_segments++; | |
3915 | } | |
c906108c SS |
3916 | } |
3917 | else | |
3918 | lose = 1; | |
3919 | ||
3920 | if (lose) | |
8a3fe4f8 | 3921 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3922 | else if (*ptr != '\0') |
3923 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3924 | |
802188a7 | 3925 | offs = ((struct section_offsets *) |
a39a16c4 | 3926 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3927 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3928 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3929 | |
31d99776 DJ |
3930 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3931 | do_segments = (data != NULL); | |
3932 | do_sections = num_segments == 0; | |
c906108c | 3933 | |
28c32713 | 3934 | if (num_segments > 0) |
31d99776 | 3935 | { |
31d99776 DJ |
3936 | segments[0] = text_addr; |
3937 | segments[1] = data_addr; | |
3938 | } | |
28c32713 JB |
3939 | /* If we have two segments, we can still try to relocate everything |
3940 | by assuming that the .text and .data offsets apply to the whole | |
3941 | text and data segments. Convert the offsets given in the packet | |
3942 | to base addresses for symfile_map_offsets_to_segments. */ | |
3943 | else if (data && data->num_segments == 2) | |
3944 | { | |
3945 | segments[0] = data->segment_bases[0] + text_addr; | |
3946 | segments[1] = data->segment_bases[1] + data_addr; | |
3947 | num_segments = 2; | |
3948 | } | |
8d385431 DJ |
3949 | /* If the object file has only one segment, assume that it is text |
3950 | rather than data; main programs with no writable data are rare, | |
3951 | but programs with no code are useless. Of course the code might | |
3952 | have ended up in the data segment... to detect that we would need | |
3953 | the permissions here. */ | |
3954 | else if (data && data->num_segments == 1) | |
3955 | { | |
3956 | segments[0] = data->segment_bases[0] + text_addr; | |
3957 | num_segments = 1; | |
3958 | } | |
28c32713 JB |
3959 | /* There's no way to relocate by segment. */ |
3960 | else | |
3961 | do_segments = 0; | |
31d99776 DJ |
3962 | |
3963 | if (do_segments) | |
3964 | { | |
3965 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3966 | offs, num_segments, segments); | |
3967 | ||
3968 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3969 | error (_("Can not handle qOffsets TextSeg " |
3970 | "response with this symbol file")); | |
31d99776 DJ |
3971 | |
3972 | if (ret > 0) | |
3973 | do_sections = 0; | |
3974 | } | |
c906108c | 3975 | |
9ef895d6 DJ |
3976 | if (data) |
3977 | free_symfile_segment_data (data); | |
31d99776 DJ |
3978 | |
3979 | if (do_sections) | |
3980 | { | |
3981 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3982 | ||
3e43a32a MS |
3983 | /* This is a temporary kludge to force data and bss to use the |
3984 | same offsets because that's what nlmconv does now. The real | |
3985 | solution requires changes to the stub and remote.c that I | |
3986 | don't have time to do right now. */ | |
31d99776 DJ |
3987 | |
3988 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3989 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3990 | } | |
c906108c SS |
3991 | |
3992 | objfile_relocate (symfile_objfile, offs); | |
3993 | } | |
3994 | ||
9a7071a8 JB |
3995 | /* Send interrupt_sequence to remote target. */ |
3996 | static void | |
eeae04df | 3997 | send_interrupt_sequence (void) |
9a7071a8 | 3998 | { |
5d93a237 TT |
3999 | struct remote_state *rs = get_remote_state (); |
4000 | ||
9a7071a8 | 4001 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4002 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4003 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4004 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4005 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4006 | { | |
5d93a237 | 4007 | serial_send_break (rs->remote_desc); |
c33e31fd | 4008 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4009 | } |
4010 | else | |
4011 | internal_error (__FILE__, __LINE__, | |
4012 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4013 | interrupt_sequence_mode); | |
4014 | } | |
4015 | ||
3405876a PA |
4016 | |
4017 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4018 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4019 | ||
4020 | static ptid_t | |
4021 | stop_reply_extract_thread (char *stop_reply) | |
4022 | { | |
4023 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4024 | { | |
256642e8 | 4025 | const char *p; |
3405876a PA |
4026 | |
4027 | /* Txx r:val ; r:val (...) */ | |
4028 | p = &stop_reply[3]; | |
4029 | ||
4030 | /* Look for "register" named "thread". */ | |
4031 | while (*p != '\0') | |
4032 | { | |
256642e8 | 4033 | const char *p1; |
3405876a PA |
4034 | |
4035 | p1 = strchr (p, ':'); | |
4036 | if (p1 == NULL) | |
4037 | return null_ptid; | |
4038 | ||
4039 | if (strncmp (p, "thread", p1 - p) == 0) | |
4040 | return read_ptid (++p1, &p); | |
4041 | ||
4042 | p1 = strchr (p, ';'); | |
4043 | if (p1 == NULL) | |
4044 | return null_ptid; | |
4045 | p1++; | |
4046 | ||
4047 | p = p1; | |
4048 | } | |
4049 | } | |
4050 | ||
4051 | return null_ptid; | |
4052 | } | |
4053 | ||
b7ea362b PA |
4054 | /* Determine the remote side's current thread. If we have a stop |
4055 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4056 | "thread" register we can extract the current thread from. If not, | |
4057 | ask the remote which is the current thread with qC. The former | |
4058 | method avoids a roundtrip. */ | |
4059 | ||
4060 | static ptid_t | |
4061 | get_current_thread (char *wait_status) | |
4062 | { | |
6a49a997 | 4063 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4064 | |
4065 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4066 | the target architecture, which we haven't yet fully determined at | |
4067 | this point. */ | |
4068 | if (wait_status != NULL) | |
4069 | ptid = stop_reply_extract_thread (wait_status); | |
4070 | if (ptid_equal (ptid, null_ptid)) | |
4071 | ptid = remote_current_thread (inferior_ptid); | |
4072 | ||
4073 | return ptid; | |
4074 | } | |
4075 | ||
49c62f2e PA |
4076 | /* Query the remote target for which is the current thread/process, |
4077 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4078 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4079 | to return the current thread. |
4080 | ||
4081 | This function is called after handling the '?' or 'vRun' packets, | |
4082 | whose response is a stop reply from which we can also try | |
4083 | extracting the thread. If the target doesn't support the explicit | |
4084 | qC query, we infer the current thread from that stop reply, passed | |
4085 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
4086 | |
4087 | static void | |
3405876a | 4088 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
4089 | { |
4090 | struct remote_state *rs = get_remote_state (); | |
4091 | int fake_pid_p = 0; | |
49c62f2e PA |
4092 | |
4093 | inferior_ptid = null_ptid; | |
4094 | ||
b7ea362b | 4095 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 4096 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4097 | |
87215ad1 | 4098 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4099 | { |
4100 | if (!remote_multi_process_p (rs)) | |
4101 | fake_pid_p = 1; | |
49c62f2e PA |
4102 | } |
4103 | else | |
4104 | { | |
4105 | /* Without this, some commands which require an active target | |
4106 | (such as kill) won't work. This variable serves (at least) | |
4107 | double duty as both the pid of the target process (if it has | |
4108 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4109 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
4110 | fake_pid_p = 1; |
4111 | } | |
4112 | ||
87215ad1 | 4113 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 4114 | |
87215ad1 SDJ |
4115 | /* Add the main thread and switch to it. Don't try reading |
4116 | registers yet, since we haven't fetched the target description | |
4117 | yet. */ | |
4118 | thread_info *tp = add_thread_silent (curr_ptid); | |
4119 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
4120 | } |
4121 | ||
6efcd9a8 PA |
4122 | /* Print info about a thread that was found already stopped on |
4123 | connection. */ | |
4124 | ||
4125 | static void | |
4126 | print_one_stopped_thread (struct thread_info *thread) | |
4127 | { | |
4128 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4129 | ||
4130 | switch_to_thread (thread->ptid); | |
4131 | stop_pc = get_frame_pc (get_current_frame ()); | |
4132 | set_current_sal_from_frame (get_current_frame ()); | |
4133 | ||
4134 | thread->suspend.waitstatus_pending_p = 0; | |
4135 | ||
4136 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4137 | { | |
4138 | enum gdb_signal sig = ws->value.sig; | |
4139 | ||
4140 | if (signal_print_state (sig)) | |
76727919 | 4141 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4142 | } |
76727919 | 4143 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4144 | } |
4145 | ||
221e1a37 PA |
4146 | /* Process all initial stop replies the remote side sent in response |
4147 | to the ? packet. These indicate threads that were already stopped | |
4148 | on initial connection. We mark these threads as stopped and print | |
4149 | their current frame before giving the user the prompt. */ | |
4150 | ||
4151 | static void | |
6efcd9a8 | 4152 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
4153 | { |
4154 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4155 | struct inferior *inf; |
4156 | struct thread_info *thread; | |
4157 | struct thread_info *selected = NULL; | |
4158 | struct thread_info *lowest_stopped = NULL; | |
4159 | struct thread_info *first = NULL; | |
221e1a37 PA |
4160 | |
4161 | /* Consume the initial pending events. */ | |
4162 | while (pending_stop_replies-- > 0) | |
4163 | { | |
4164 | ptid_t waiton_ptid = minus_one_ptid; | |
4165 | ptid_t event_ptid; | |
4166 | struct target_waitstatus ws; | |
4167 | int ignore_event = 0; | |
6efcd9a8 | 4168 | struct thread_info *thread; |
221e1a37 PA |
4169 | |
4170 | memset (&ws, 0, sizeof (ws)); | |
4171 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4172 | if (remote_debug) | |
4173 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4174 | ||
4175 | switch (ws.kind) | |
4176 | { | |
4177 | case TARGET_WAITKIND_IGNORE: | |
4178 | case TARGET_WAITKIND_NO_RESUMED: | |
4179 | case TARGET_WAITKIND_SIGNALLED: | |
4180 | case TARGET_WAITKIND_EXITED: | |
4181 | /* We shouldn't see these, but if we do, just ignore. */ | |
4182 | if (remote_debug) | |
4183 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4184 | ignore_event = 1; | |
4185 | break; | |
4186 | ||
4187 | case TARGET_WAITKIND_EXECD: | |
4188 | xfree (ws.value.execd_pathname); | |
4189 | break; | |
4190 | default: | |
4191 | break; | |
4192 | } | |
4193 | ||
4194 | if (ignore_event) | |
4195 | continue; | |
4196 | ||
6efcd9a8 | 4197 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
4198 | |
4199 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4200 | { | |
4201 | enum gdb_signal sig = ws.value.sig; | |
4202 | ||
4203 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4204 | instead of signal 0. Suppress it. */ | |
4205 | if (sig == GDB_SIGNAL_TRAP) | |
4206 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
4207 | thread->suspend.stop_signal = sig; |
4208 | ws.value.sig = sig; | |
4209 | } | |
221e1a37 | 4210 | |
6efcd9a8 PA |
4211 | thread->suspend.waitstatus = ws; |
4212 | ||
4213 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4214 | || ws.value.sig != GDB_SIGNAL_0) | |
4215 | thread->suspend.waitstatus_pending_p = 1; | |
4216 | ||
4217 | set_executing (event_ptid, 0); | |
4218 | set_running (event_ptid, 0); | |
7aabaf9d | 4219 | get_remote_thread_info (thread)->vcont_resumed = 0; |
6efcd9a8 PA |
4220 | } |
4221 | ||
4222 | /* "Notice" the new inferiors before anything related to | |
4223 | registers/memory. */ | |
4224 | ALL_INFERIORS (inf) | |
4225 | { | |
4226 | if (inf->pid == 0) | |
4227 | continue; | |
4228 | ||
4229 | inf->needs_setup = 1; | |
4230 | ||
4231 | if (non_stop) | |
4232 | { | |
4233 | thread = any_live_thread_of_process (inf->pid); | |
4234 | notice_new_inferior (thread->ptid, | |
4235 | thread->state == THREAD_RUNNING, | |
4236 | from_tty); | |
4237 | } | |
4238 | } | |
4239 | ||
4240 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4241 | records the threads' stop pc, so must be done after "noticing" | |
4242 | the inferiors. */ | |
4243 | if (!non_stop) | |
4244 | { | |
4245 | stop_all_threads (); | |
4246 | ||
4247 | /* If all threads of an inferior were already stopped, we | |
4248 | haven't setup the inferior yet. */ | |
4249 | ALL_INFERIORS (inf) | |
4250 | { | |
4251 | if (inf->pid == 0) | |
4252 | continue; | |
221e1a37 | 4253 | |
6efcd9a8 PA |
4254 | if (inf->needs_setup) |
4255 | { | |
4256 | thread = any_live_thread_of_process (inf->pid); | |
4257 | switch_to_thread_no_regs (thread); | |
4258 | setup_inferior (0); | |
4259 | } | |
4260 | } | |
221e1a37 | 4261 | } |
6efcd9a8 PA |
4262 | |
4263 | /* Now go over all threads that are stopped, and print their current | |
4264 | frame. If all-stop, then if there's a signalled thread, pick | |
4265 | that as current. */ | |
4266 | ALL_NON_EXITED_THREADS (thread) | |
4267 | { | |
6efcd9a8 PA |
4268 | if (first == NULL) |
4269 | first = thread; | |
4270 | ||
4271 | if (!non_stop) | |
4272 | set_running (thread->ptid, 0); | |
4273 | else if (thread->state != THREAD_STOPPED) | |
4274 | continue; | |
4275 | ||
6efcd9a8 PA |
4276 | if (selected == NULL |
4277 | && thread->suspend.waitstatus_pending_p) | |
4278 | selected = thread; | |
4279 | ||
5d5658a1 PA |
4280 | if (lowest_stopped == NULL |
4281 | || thread->inf->num < lowest_stopped->inf->num | |
4282 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4283 | lowest_stopped = thread; |
4284 | ||
4285 | if (non_stop) | |
4286 | print_one_stopped_thread (thread); | |
4287 | } | |
4288 | ||
4289 | /* In all-stop, we only print the status of one thread, and leave | |
4290 | others with their status pending. */ | |
4291 | if (!non_stop) | |
4292 | { | |
4293 | thread = selected; | |
4294 | if (thread == NULL) | |
4295 | thread = lowest_stopped; | |
4296 | if (thread == NULL) | |
4297 | thread = first; | |
4298 | ||
4299 | print_one_stopped_thread (thread); | |
4300 | } | |
4301 | ||
4302 | /* For "info program". */ | |
4303 | thread = inferior_thread (); | |
4304 | if (thread->state == THREAD_STOPPED) | |
4305 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4306 | } |
4307 | ||
048094ac PA |
4308 | /* Start the remote connection and sync state. */ |
4309 | ||
f6ac5f3d PA |
4310 | void |
4311 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4312 | { |
c8d104ad PA |
4313 | struct remote_state *rs = get_remote_state (); |
4314 | struct packet_config *noack_config; | |
2d717e4f | 4315 | char *wait_status = NULL; |
8621d6a9 | 4316 | |
048094ac PA |
4317 | /* Signal other parts that we're going through the initial setup, |
4318 | and so things may not be stable yet. E.g., we don't try to | |
4319 | install tracepoints until we've relocated symbols. Also, a | |
4320 | Ctrl-C before we're connected and synced up can't interrupt the | |
4321 | target. Instead, it offers to drop the (potentially wedged) | |
4322 | connection. */ | |
4323 | rs->starting_up = 1; | |
4324 | ||
522002f9 | 4325 | QUIT; |
c906108c | 4326 | |
9a7071a8 JB |
4327 | if (interrupt_on_connect) |
4328 | send_interrupt_sequence (); | |
4329 | ||
57e12211 | 4330 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4331 | remote_serial_write ("+", 1); |
1e51243a | 4332 | |
c8d104ad PA |
4333 | /* The first packet we send to the target is the optional "supported |
4334 | packets" request. If the target can answer this, it will tell us | |
4335 | which later probes to skip. */ | |
4336 | remote_query_supported (); | |
4337 | ||
d914c394 | 4338 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4339 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4340 | set_permissions (); |
d914c394 | 4341 | |
57809e5e JK |
4342 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4343 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4344 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4345 | invalid reply and GDB would return error in | |
4346 | remote_hostio_set_filesystem, making remote files access impossible. | |
4347 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4348 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4349 | { | |
4350 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4351 | ||
4352 | putpkt (v_mustreplyempty); | |
4353 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4354 | if (strcmp (rs->buf, "OK") == 0) | |
4355 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4356 | else if (strcmp (rs->buf, "") != 0) | |
4357 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4358 | rs->buf); | |
4359 | } | |
4360 | ||
c8d104ad PA |
4361 | /* Next, we possibly activate noack mode. |
4362 | ||
4363 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4364 | enable noack mode if the stub reported a wish for it with | |
4365 | qSupported. | |
4366 | ||
4367 | If set to TRUE, then enable noack mode even if the stub didn't | |
4368 | report it in qSupported. If the stub doesn't reply OK, the | |
4369 | session ends with an error. | |
4370 | ||
4371 | If FALSE, then don't activate noack mode, regardless of what the | |
4372 | stub claimed should be the default with qSupported. */ | |
4373 | ||
4374 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4375 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4376 | { |
4377 | putpkt ("QStartNoAckMode"); | |
4378 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4379 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4380 | rs->noack_mode = 1; | |
4381 | } | |
4382 | ||
04bd08de | 4383 | if (extended_p) |
5fe04517 PA |
4384 | { |
4385 | /* Tell the remote that we are using the extended protocol. */ | |
4386 | putpkt ("!"); | |
4387 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4388 | } | |
4389 | ||
9b224c5e PA |
4390 | /* Let the target know which signals it is allowed to pass down to |
4391 | the program. */ | |
4392 | update_signals_program_target (); | |
4393 | ||
d962ef82 DJ |
4394 | /* Next, if the target can specify a description, read it. We do |
4395 | this before anything involving memory or registers. */ | |
4396 | target_find_description (); | |
4397 | ||
6c95b8df PA |
4398 | /* Next, now that we know something about the target, update the |
4399 | address spaces in the program spaces. */ | |
4400 | update_address_spaces (); | |
4401 | ||
50c71eaf PA |
4402 | /* On OSs where the list of libraries is global to all |
4403 | processes, we fetch them early. */ | |
f5656ead | 4404 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4405 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4406 | |
6efcd9a8 | 4407 | if (target_is_non_stop_p ()) |
74531fed | 4408 | { |
4082afcc | 4409 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4410 | error (_("Non-stop mode requested, but remote " |
4411 | "does not support non-stop")); | |
74531fed PA |
4412 | |
4413 | putpkt ("QNonStop:1"); | |
4414 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4415 | ||
4416 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4417 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4418 | |
4419 | /* Find about threads and processes the stub is already | |
4420 | controlling. We default to adding them in the running state. | |
4421 | The '?' query below will then tell us about which threads are | |
4422 | stopped. */ | |
f6ac5f3d | 4423 | this->update_thread_list (); |
74531fed | 4424 | } |
4082afcc | 4425 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4426 | { |
4427 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4428 | Request it explicitly. */ |
74531fed PA |
4429 | putpkt ("QNonStop:0"); |
4430 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4431 | ||
4432 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4433 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4434 | } |
4435 | ||
a0743c90 YQ |
4436 | /* Upload TSVs regardless of whether the target is running or not. The |
4437 | remote stub, such as GDBserver, may have some predefined or builtin | |
4438 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4439 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4440 | { |
4441 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4442 | ||
f6ac5f3d | 4443 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4444 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4445 | } | |
4446 | ||
2d717e4f DJ |
4447 | /* Check whether the target is running now. */ |
4448 | putpkt ("?"); | |
4449 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4450 | ||
6efcd9a8 | 4451 | if (!target_is_non_stop_p ()) |
2d717e4f | 4452 | { |
74531fed | 4453 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4454 | { |
04bd08de | 4455 | if (!extended_p) |
74531fed | 4456 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4457 | |
4458 | /* We're connected, but not running. Drop out before we | |
4459 | call start_remote. */ | |
e278ad5b | 4460 | rs->starting_up = 0; |
c35b1492 | 4461 | return; |
2d717e4f DJ |
4462 | } |
4463 | else | |
74531fed | 4464 | { |
74531fed | 4465 | /* Save the reply for later. */ |
224c3ddb | 4466 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4467 | strcpy (wait_status, rs->buf); |
4468 | } | |
4469 | ||
b7ea362b | 4470 | /* Fetch thread list. */ |
e8032dde | 4471 | target_update_thread_list (); |
b7ea362b | 4472 | |
74531fed PA |
4473 | /* Let the stub know that we want it to return the thread. */ |
4474 | set_continue_thread (minus_one_ptid); | |
4475 | ||
b7ea362b PA |
4476 | if (thread_count () == 0) |
4477 | { | |
4478 | /* Target has no concept of threads at all. GDB treats | |
4479 | non-threaded target as single-threaded; add a main | |
4480 | thread. */ | |
4481 | add_current_inferior_and_thread (wait_status); | |
4482 | } | |
4483 | else | |
4484 | { | |
4485 | /* We have thread information; select the thread the target | |
4486 | says should be current. If we're reconnecting to a | |
4487 | multi-threaded program, this will ideally be the thread | |
4488 | that last reported an event before GDB disconnected. */ | |
4489 | inferior_ptid = get_current_thread (wait_status); | |
4490 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4491 | { | |
4492 | /* Odd... The target was able to list threads, but not | |
4493 | tell us which thread was current (no "thread" | |
4494 | register in T stop reply?). Just pick the first | |
4495 | thread in the thread list then. */ | |
c9f35b34 KB |
4496 | |
4497 | if (remote_debug) | |
4498 | fprintf_unfiltered (gdb_stdlog, | |
4499 | "warning: couldn't determine remote " | |
4500 | "current thread; picking first in list.\n"); | |
4501 | ||
b7ea362b PA |
4502 | inferior_ptid = thread_list->ptid; |
4503 | } | |
4504 | } | |
74531fed | 4505 | |
6e586cc5 YQ |
4506 | /* init_wait_for_inferior should be called before get_offsets in order |
4507 | to manage `inserted' flag in bp loc in a correct state. | |
4508 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4509 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4510 | start_remote, set `inserted' flag to 1. In the initialization of | |
4511 | inferior, breakpoint_init_inferior should be called first, and then | |
4512 | breakpoint_re_set can be called. If this order is broken, state of | |
4513 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4514 | manipulation. */ | |
4515 | init_wait_for_inferior (); | |
4516 | ||
74531fed PA |
4517 | get_offsets (); /* Get text, data & bss offsets. */ |
4518 | ||
d962ef82 DJ |
4519 | /* If we could not find a description using qXfer, and we know |
4520 | how to do it some other way, try again. This is not | |
4521 | supported for non-stop; it could be, but it is tricky if | |
4522 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4523 | if (remote_read_description_p (this) |
f5656ead | 4524 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4525 | { |
4526 | target_clear_description (); | |
4527 | target_find_description (); | |
4528 | } | |
4529 | ||
74531fed PA |
4530 | /* Use the previously fetched status. */ |
4531 | gdb_assert (wait_status != NULL); | |
4532 | strcpy (rs->buf, wait_status); | |
4533 | rs->cached_wait_status = 1; | |
4534 | ||
f6ac5f3d | 4535 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4536 | } |
4537 | else | |
4538 | { | |
68c97600 PA |
4539 | /* Clear WFI global state. Do this before finding about new |
4540 | threads and inferiors, and setting the current inferior. | |
4541 | Otherwise we would clear the proceed status of the current | |
4542 | inferior when we want its stop_soon state to be preserved | |
4543 | (see notice_new_inferior). */ | |
4544 | init_wait_for_inferior (); | |
4545 | ||
74531fed PA |
4546 | /* In non-stop, we will either get an "OK", meaning that there |
4547 | are no stopped threads at this time; or, a regular stop | |
4548 | reply. In the latter case, there may be more than one thread | |
4549 | stopped --- we pull them all out using the vStopped | |
4550 | mechanism. */ | |
4551 | if (strcmp (rs->buf, "OK") != 0) | |
4552 | { | |
722247f1 | 4553 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4554 | |
722247f1 YQ |
4555 | /* remote_notif_get_pending_replies acks this one, and gets |
4556 | the rest out. */ | |
f48ff2a7 | 4557 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4558 | = remote_notif_parse (notif, rs->buf); |
4559 | remote_notif_get_pending_events (notif); | |
74531fed | 4560 | } |
2d717e4f | 4561 | |
74531fed PA |
4562 | if (thread_count () == 0) |
4563 | { | |
04bd08de | 4564 | if (!extended_p) |
74531fed | 4565 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4566 | |
c35b1492 PA |
4567 | /* We're connected, but not running. Drop out before we |
4568 | call start_remote. */ | |
e278ad5b | 4569 | rs->starting_up = 0; |
c35b1492 PA |
4570 | return; |
4571 | } | |
74531fed | 4572 | |
74531fed PA |
4573 | /* In non-stop mode, any cached wait status will be stored in |
4574 | the stop reply queue. */ | |
4575 | gdb_assert (wait_status == NULL); | |
f0223081 | 4576 | |
2455069d | 4577 | /* Report all signals during attach/startup. */ |
f6ac5f3d | 4578 | pass_signals (0, NULL); |
221e1a37 PA |
4579 | |
4580 | /* If there are already stopped threads, mark them stopped and | |
4581 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4582 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4583 | |
4584 | if (target_can_async_p ()) | |
4585 | target_async (1); | |
74531fed | 4586 | } |
c8d104ad | 4587 | |
c8d104ad PA |
4588 | /* If we connected to a live target, do some additional setup. */ |
4589 | if (target_has_execution) | |
4590 | { | |
f4ccffad | 4591 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4592 | remote_check_symbols (); |
c8d104ad | 4593 | } |
50c71eaf | 4594 | |
d5551862 SS |
4595 | /* Possibly the target has been engaged in a trace run started |
4596 | previously; find out where things are at. */ | |
f6ac5f3d | 4597 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4598 | { |
00bf0b85 | 4599 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4600 | |
00bf0b85 SS |
4601 | if (current_trace_status ()->running) |
4602 | printf_filtered (_("Trace is already running on the target.\n")); | |
4603 | ||
f6ac5f3d | 4604 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4605 | |
4606 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4607 | } |
4608 | ||
c0272db5 TW |
4609 | /* Possibly the target has been engaged in a btrace record started |
4610 | previously; find out where things are at. */ | |
4611 | remote_btrace_maybe_reopen (); | |
4612 | ||
1e51243a PA |
4613 | /* The thread and inferior lists are now synchronized with the |
4614 | target, our symbols have been relocated, and we're merged the | |
4615 | target's tracepoints with ours. We're done with basic start | |
4616 | up. */ | |
4617 | rs->starting_up = 0; | |
4618 | ||
a25a5a45 PA |
4619 | /* Maybe breakpoints are global and need to be inserted now. */ |
4620 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4621 | insert_breakpoints (); |
c906108c SS |
4622 | } |
4623 | ||
4624 | /* Open a connection to a remote debugger. | |
4625 | NAME is the filename used for communication. */ | |
4626 | ||
f6ac5f3d PA |
4627 | void |
4628 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4629 | { |
f6ac5f3d | 4630 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4631 | } |
4632 | ||
c906108c SS |
4633 | /* Open a connection to a remote debugger using the extended |
4634 | remote gdb protocol. NAME is the filename used for communication. */ | |
4635 | ||
f6ac5f3d PA |
4636 | void |
4637 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4638 | { |
f6ac5f3d | 4639 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4640 | } |
4641 | ||
ca4f7f8b PA |
4642 | /* Reset all packets back to "unknown support". Called when opening a |
4643 | new connection to a remote target. */ | |
c906108c | 4644 | |
d471ea57 | 4645 | static void |
ca4f7f8b | 4646 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4647 | { |
4648 | int i; | |
a744cf53 | 4649 | |
444abaca | 4650 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4651 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4652 | } |
4653 | ||
ca4f7f8b PA |
4654 | /* Initialize all packet configs. */ |
4655 | ||
4656 | static void | |
4657 | init_all_packet_configs (void) | |
4658 | { | |
4659 | int i; | |
4660 | ||
4661 | for (i = 0; i < PACKET_MAX; i++) | |
4662 | { | |
4663 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4664 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4665 | } | |
4666 | } | |
4667 | ||
23860348 | 4668 | /* Symbol look-up. */ |
dc8acb97 MS |
4669 | |
4670 | static void | |
36d25514 | 4671 | remote_check_symbols (void) |
dc8acb97 MS |
4672 | { |
4673 | char *msg, *reply, *tmp; | |
dc8acb97 | 4674 | int end; |
28170b88 | 4675 | long reply_size; |
a5c0808e | 4676 | struct cleanup *old_chain; |
dc8acb97 | 4677 | |
63154eca PA |
4678 | /* The remote side has no concept of inferiors that aren't running |
4679 | yet, it only knows about running processes. If we're connected | |
4680 | but our current inferior is not running, we should not invite the | |
4681 | remote target to request symbol lookups related to its | |
4682 | (unrelated) current process. */ | |
4683 | if (!target_has_execution) | |
4684 | return; | |
4685 | ||
4082afcc | 4686 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4687 | return; |
4688 | ||
63154eca PA |
4689 | /* Make sure the remote is pointing at the right process. Note |
4690 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4691 | set_general_process (); |
4692 | ||
6d820c5c DJ |
4693 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4694 | because we need both at the same time. */ | |
224c3ddb | 4695 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4696 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4697 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4698 | make_cleanup (free_current_contents, &reply); | |
4699 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4700 | |
23860348 | 4701 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4702 | |
4703 | putpkt ("qSymbol::"); | |
28170b88 MK |
4704 | getpkt (&reply, &reply_size, 0); |
4705 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4706 | |
61012eef | 4707 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4708 | { |
77e371c0 TT |
4709 | struct bound_minimal_symbol sym; |
4710 | ||
dc8acb97 | 4711 | tmp = &reply[8]; |
cfd77fa1 | 4712 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4713 | msg[end] = '\0'; |
4714 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4715 | if (sym.minsym == NULL) |
ea9c271d | 4716 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4717 | else |
2bbe3cc1 | 4718 | { |
f5656ead | 4719 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4720 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4721 | |
4722 | /* If this is a function address, return the start of code | |
4723 | instead of any data function descriptor. */ | |
f5656ead | 4724 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4725 | sym_addr, |
f6ac5f3d | 4726 | target_stack); |
2bbe3cc1 DJ |
4727 | |
4728 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4729 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4730 | } |
4731 | ||
dc8acb97 | 4732 | putpkt (msg); |
28170b88 | 4733 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4734 | } |
a5c0808e PA |
4735 | |
4736 | do_cleanups (old_chain); | |
dc8acb97 MS |
4737 | } |
4738 | ||
9db8d71f | 4739 | static struct serial * |
baa336ce | 4740 | remote_serial_open (const char *name) |
9db8d71f DJ |
4741 | { |
4742 | static int udp_warning = 0; | |
4743 | ||
4744 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4745 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4746 | serial connection is reliable and not the serial connection promising | |
4747 | to be. */ | |
61012eef | 4748 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4749 | { |
3e43a32a MS |
4750 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4751 | "Some events may be lost, rendering further debugging " | |
4752 | "impossible.")); | |
9db8d71f DJ |
4753 | udp_warning = 1; |
4754 | } | |
4755 | ||
4756 | return serial_open (name); | |
4757 | } | |
4758 | ||
d914c394 SS |
4759 | /* Inform the target of our permission settings. The permission flags |
4760 | work without this, but if the target knows the settings, it can do | |
4761 | a couple things. First, it can add its own check, to catch cases | |
4762 | that somehow manage to get by the permissions checks in target | |
4763 | methods. Second, if the target is wired to disallow particular | |
4764 | settings (for instance, a system in the field that is not set up to | |
4765 | be able to stop at a breakpoint), it can object to any unavailable | |
4766 | permissions. */ | |
4767 | ||
4768 | void | |
f6ac5f3d | 4769 | remote_target::set_permissions () |
d914c394 SS |
4770 | { |
4771 | struct remote_state *rs = get_remote_state (); | |
4772 | ||
bba74b36 YQ |
4773 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4774 | "WriteReg:%x;WriteMem:%x;" | |
4775 | "InsertBreak:%x;InsertTrace:%x;" | |
4776 | "InsertFastTrace:%x;Stop:%x", | |
4777 | may_write_registers, may_write_memory, | |
4778 | may_insert_breakpoints, may_insert_tracepoints, | |
4779 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4780 | putpkt (rs->buf); |
4781 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4782 | ||
4783 | /* If the target didn't like the packet, warn the user. Do not try | |
4784 | to undo the user's settings, that would just be maddening. */ | |
4785 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4786 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4787 | } |
4788 | ||
be2a5f71 DJ |
4789 | /* This type describes each known response to the qSupported |
4790 | packet. */ | |
4791 | struct protocol_feature | |
4792 | { | |
4793 | /* The name of this protocol feature. */ | |
4794 | const char *name; | |
4795 | ||
4796 | /* The default for this protocol feature. */ | |
4797 | enum packet_support default_support; | |
4798 | ||
4799 | /* The function to call when this feature is reported, or after | |
4800 | qSupported processing if the feature is not supported. | |
4801 | The first argument points to this structure. The second | |
4802 | argument indicates whether the packet requested support be | |
4803 | enabled, disabled, or probed (or the default, if this function | |
4804 | is being called at the end of processing and this feature was | |
4805 | not reported). The third argument may be NULL; if not NULL, it | |
4806 | is a NUL-terminated string taken from the packet following | |
4807 | this feature's name and an equals sign. */ | |
4808 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4809 | const char *); | |
4810 | ||
4811 | /* The corresponding packet for this feature. Only used if | |
4812 | FUNC is remote_supported_packet. */ | |
4813 | int packet; | |
4814 | }; | |
4815 | ||
be2a5f71 DJ |
4816 | static void |
4817 | remote_supported_packet (const struct protocol_feature *feature, | |
4818 | enum packet_support support, | |
4819 | const char *argument) | |
4820 | { | |
4821 | if (argument) | |
4822 | { | |
4823 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4824 | " \"%s\"."), feature->name); | |
4825 | return; | |
4826 | } | |
4827 | ||
4082afcc | 4828 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4829 | } |
be2a5f71 DJ |
4830 | |
4831 | static void | |
4832 | remote_packet_size (const struct protocol_feature *feature, | |
4833 | enum packet_support support, const char *value) | |
4834 | { | |
4835 | struct remote_state *rs = get_remote_state (); | |
4836 | ||
4837 | int packet_size; | |
4838 | char *value_end; | |
4839 | ||
4840 | if (support != PACKET_ENABLE) | |
4841 | return; | |
4842 | ||
4843 | if (value == NULL || *value == '\0') | |
4844 | { | |
4845 | warning (_("Remote target reported \"%s\" without a size."), | |
4846 | feature->name); | |
4847 | return; | |
4848 | } | |
4849 | ||
4850 | errno = 0; | |
4851 | packet_size = strtol (value, &value_end, 16); | |
4852 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4853 | { | |
4854 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4855 | feature->name, value); | |
4856 | return; | |
4857 | } | |
4858 | ||
be2a5f71 DJ |
4859 | /* Record the new maximum packet size. */ |
4860 | rs->explicit_packet_size = packet_size; | |
4861 | } | |
4862 | ||
dc473cfb | 4863 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4864 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4865 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4866 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4867 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4868 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4869 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4870 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4871 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4872 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4873 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4874 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4875 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4876 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4877 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4878 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4879 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4880 | PACKET_qXfer_spu_read }, | |
4881 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4882 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4883 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4884 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4885 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4886 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4887 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4888 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4889 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4890 | PACKET_QPassSignals }, | |
82075af2 JS |
4891 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4892 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4893 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4894 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
4895 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
4896 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
4897 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4898 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
4899 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
4900 | PACKET_QEnvironmentHexEncoded }, | |
4901 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
4902 | PACKET_QEnvironmentReset }, | |
4903 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
4904 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
4905 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4906 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4907 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4908 | PACKET_multiprocess_feature }, | |
4909 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4910 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4911 | PACKET_qXfer_siginfo_read }, | |
4912 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4913 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4914 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4915 | PACKET_ConditionalTracepoints }, |
4082afcc | 4916 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4917 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4918 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4919 | PACKET_BreakpointCommands }, |
4082afcc | 4920 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4921 | PACKET_FastTracepoints }, |
4082afcc | 4922 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4923 | PACKET_StaticTracepoints }, |
4082afcc | 4924 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4925 | PACKET_InstallInTrace}, |
4082afcc PA |
4926 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4927 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4928 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4929 | PACKET_bc }, | |
4930 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4931 | PACKET_bs }, | |
409873ef SS |
4932 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4933 | PACKET_TracepointSource }, | |
d914c394 SS |
4934 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4935 | PACKET_QAllow }, | |
4082afcc PA |
4936 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4937 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4938 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4939 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4940 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4941 | PACKET_qXfer_uib }, | |
03583c20 UW |
4942 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4943 | PACKET_QDisableRandomization }, | |
d1feda86 | 4944 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4945 | { "QTBuffer:size", PACKET_DISABLE, |
4946 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4947 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4948 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4949 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4950 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4951 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4952 | PACKET_qXfer_btrace }, |
4953 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4954 | PACKET_qXfer_btrace_conf }, |
4955 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4956 | PACKET_Qbtrace_conf_bts_size }, |
4957 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4958 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4959 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4960 | PACKET_fork_event_feature }, | |
4961 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4962 | PACKET_vfork_event_feature }, | |
94585166 DB |
4963 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4964 | PACKET_exec_event_feature }, | |
b20a6524 | 4965 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4966 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4967 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4968 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4969 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4970 | }; |
4971 | ||
c8d5aac9 L |
4972 | static char *remote_support_xml; |
4973 | ||
4974 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4975 | ||
4976 | void | |
6e39997a | 4977 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4978 | { |
4979 | #if defined(HAVE_LIBEXPAT) | |
4980 | if (remote_support_xml == NULL) | |
c4f7c687 | 4981 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4982 | else |
4983 | { | |
4984 | char *copy = xstrdup (remote_support_xml + 13); | |
4985 | char *p = strtok (copy, ","); | |
4986 | ||
4987 | do | |
4988 | { | |
4989 | if (strcmp (p, xml) == 0) | |
4990 | { | |
4991 | /* already there */ | |
4992 | xfree (copy); | |
4993 | return; | |
4994 | } | |
4995 | } | |
4996 | while ((p = strtok (NULL, ",")) != NULL); | |
4997 | xfree (copy); | |
4998 | ||
94b0dee1 PA |
4999 | remote_support_xml = reconcat (remote_support_xml, |
5000 | remote_support_xml, ",", xml, | |
5001 | (char *) NULL); | |
c8d5aac9 L |
5002 | } |
5003 | #endif | |
5004 | } | |
5005 | ||
69b6ecb0 TT |
5006 | static void |
5007 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5008 | { |
69b6ecb0 TT |
5009 | if (!msg->empty ()) |
5010 | msg->append (";"); | |
5011 | msg->append (append); | |
c8d5aac9 L |
5012 | } |
5013 | ||
be2a5f71 DJ |
5014 | static void |
5015 | remote_query_supported (void) | |
5016 | { | |
5017 | struct remote_state *rs = get_remote_state (); | |
5018 | char *next; | |
5019 | int i; | |
5020 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5021 | ||
5022 | /* The packet support flags are handled differently for this packet | |
5023 | than for most others. We treat an error, a disabled packet, and | |
5024 | an empty response identically: any features which must be reported | |
5025 | to be used will be automatically disabled. An empty buffer | |
5026 | accomplishes this, since that is also the representation for a list | |
5027 | containing no features. */ | |
5028 | ||
5029 | rs->buf[0] = 0; | |
4082afcc | 5030 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5031 | { |
69b6ecb0 | 5032 | std::string q; |
c8d5aac9 | 5033 | |
73b8c1fd | 5034 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5035 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5036 | |
f7e6eed5 | 5037 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5038 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5039 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5040 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5041 | |
69b6ecb0 | 5042 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5043 | |
8020350c DB |
5044 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5045 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5046 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5047 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5048 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5049 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5050 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5051 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5052 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5053 | |
750ce8d1 | 5054 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5055 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5056 | |
65706a29 | 5057 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5058 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5059 | |
f2faf941 | 5060 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5061 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5062 | |
b35d5edb PA |
5063 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5064 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5065 | if (remote_support_xml != NULL |
5066 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5067 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5068 | |
69b6ecb0 TT |
5069 | q = "qSupported:" + q; |
5070 | putpkt (q.c_str ()); | |
94b0dee1 | 5071 | |
be2a5f71 DJ |
5072 | getpkt (&rs->buf, &rs->buf_size, 0); |
5073 | ||
5074 | /* If an error occured, warn, but do not return - just reset the | |
5075 | buffer to empty and go on to disable features. */ | |
5076 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5077 | == PACKET_ERROR) | |
5078 | { | |
5079 | warning (_("Remote failure reply: %s"), rs->buf); | |
5080 | rs->buf[0] = 0; | |
5081 | } | |
5082 | } | |
5083 | ||
5084 | memset (seen, 0, sizeof (seen)); | |
5085 | ||
5086 | next = rs->buf; | |
5087 | while (*next) | |
5088 | { | |
5089 | enum packet_support is_supported; | |
5090 | char *p, *end, *name_end, *value; | |
5091 | ||
5092 | /* First separate out this item from the rest of the packet. If | |
5093 | there's another item after this, we overwrite the separator | |
5094 | (terminated strings are much easier to work with). */ | |
5095 | p = next; | |
5096 | end = strchr (p, ';'); | |
5097 | if (end == NULL) | |
5098 | { | |
5099 | end = p + strlen (p); | |
5100 | next = end; | |
5101 | } | |
5102 | else | |
5103 | { | |
89be2091 DJ |
5104 | *end = '\0'; |
5105 | next = end + 1; | |
5106 | ||
be2a5f71 DJ |
5107 | if (end == p) |
5108 | { | |
5109 | warning (_("empty item in \"qSupported\" response")); | |
5110 | continue; | |
5111 | } | |
be2a5f71 DJ |
5112 | } |
5113 | ||
5114 | name_end = strchr (p, '='); | |
5115 | if (name_end) | |
5116 | { | |
5117 | /* This is a name=value entry. */ | |
5118 | is_supported = PACKET_ENABLE; | |
5119 | value = name_end + 1; | |
5120 | *name_end = '\0'; | |
5121 | } | |
5122 | else | |
5123 | { | |
5124 | value = NULL; | |
5125 | switch (end[-1]) | |
5126 | { | |
5127 | case '+': | |
5128 | is_supported = PACKET_ENABLE; | |
5129 | break; | |
5130 | ||
5131 | case '-': | |
5132 | is_supported = PACKET_DISABLE; | |
5133 | break; | |
5134 | ||
5135 | case '?': | |
5136 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5137 | break; | |
5138 | ||
5139 | default: | |
3e43a32a MS |
5140 | warning (_("unrecognized item \"%s\" " |
5141 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5142 | continue; |
5143 | } | |
5144 | end[-1] = '\0'; | |
5145 | } | |
5146 | ||
5147 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5148 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5149 | { | |
5150 | const struct protocol_feature *feature; | |
5151 | ||
5152 | seen[i] = 1; | |
5153 | feature = &remote_protocol_features[i]; | |
5154 | feature->func (feature, is_supported, value); | |
5155 | break; | |
5156 | } | |
5157 | } | |
5158 | ||
5159 | /* If we increased the packet size, make sure to increase the global | |
5160 | buffer size also. We delay this until after parsing the entire | |
5161 | qSupported packet, because this is the same buffer we were | |
5162 | parsing. */ | |
5163 | if (rs->buf_size < rs->explicit_packet_size) | |
5164 | { | |
5165 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 5166 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
5167 | } |
5168 | ||
5169 | /* Handle the defaults for unmentioned features. */ | |
5170 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5171 | if (!seen[i]) | |
5172 | { | |
5173 | const struct protocol_feature *feature; | |
5174 | ||
5175 | feature = &remote_protocol_features[i]; | |
5176 | feature->func (feature, feature->default_support, NULL); | |
5177 | } | |
5178 | } | |
5179 | ||
048094ac PA |
5180 | /* Serial QUIT handler for the remote serial descriptor. |
5181 | ||
5182 | Defers handling a Ctrl-C until we're done with the current | |
5183 | command/response packet sequence, unless: | |
5184 | ||
5185 | - We're setting up the connection. Don't send a remote interrupt | |
5186 | request, as we're not fully synced yet. Quit immediately | |
5187 | instead. | |
5188 | ||
5189 | - The target has been resumed in the foreground | |
223ffa71 | 5190 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5191 | packet, and we're blocked waiting for the stop reply, thus a |
5192 | Ctrl-C should be immediately sent to the target. | |
5193 | ||
5194 | - We get a second Ctrl-C while still within the same serial read or | |
5195 | write. In that case the serial is seemingly wedged --- offer to | |
5196 | quit/disconnect. | |
5197 | ||
5198 | - We see a second Ctrl-C without target response, after having | |
5199 | previously interrupted the target. In that case the target/stub | |
5200 | is probably wedged --- offer to quit/disconnect. | |
5201 | */ | |
5202 | ||
5203 | static void | |
5204 | remote_serial_quit_handler (void) | |
5205 | { | |
5206 | struct remote_state *rs = get_remote_state (); | |
5207 | ||
5208 | if (check_quit_flag ()) | |
5209 | { | |
5210 | /* If we're starting up, we're not fully synced yet. Quit | |
5211 | immediately. */ | |
5212 | if (rs->starting_up) | |
5213 | quit (); | |
5214 | else if (rs->got_ctrlc_during_io) | |
5215 | { | |
5216 | if (query (_("The target is not responding to GDB commands.\n" | |
5217 | "Stop debugging it? "))) | |
5218 | remote_unpush_and_throw (); | |
5219 | } | |
5220 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5221 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5222 | interrupt_query (); |
5223 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5224 | an interrupt request. */ | |
223ffa71 | 5225 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5226 | target_interrupt (); |
048094ac PA |
5227 | else |
5228 | rs->got_ctrlc_during_io = 1; | |
5229 | } | |
5230 | } | |
5231 | ||
78a095c3 JK |
5232 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
5233 | on it so remove them first. */ | |
5234 | ||
5235 | static void | |
5236 | remote_unpush_target (void) | |
5237 | { | |
915ef8b1 | 5238 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 5239 | } |
be2a5f71 | 5240 | |
048094ac PA |
5241 | static void |
5242 | remote_unpush_and_throw (void) | |
5243 | { | |
5244 | remote_unpush_target (); | |
5245 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
5246 | } | |
5247 | ||
f6ac5f3d PA |
5248 | void |
5249 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5250 | { |
d01949b6 | 5251 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 5252 | |
c906108c | 5253 | if (name == 0) |
8a3fe4f8 | 5254 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5255 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5256 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5257 | |
23860348 | 5258 | /* See FIXME above. */ |
c6ebd6cf | 5259 | if (!target_async_permitted) |
92d1e331 | 5260 | wait_forever_enabled_p = 1; |
6426a772 | 5261 | |
2d717e4f | 5262 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5263 | Ask this question first, before target_preopen has a chance to kill |
5264 | anything. */ | |
5d93a237 | 5265 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 5266 | { |
78a095c3 JK |
5267 | if (from_tty |
5268 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5269 | error (_("Still connected.")); |
5270 | } | |
5271 | ||
78a095c3 | 5272 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5273 | target_preopen (from_tty); |
5274 | ||
89be2091 | 5275 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
5276 | xfree (rs->last_pass_packet); |
5277 | rs->last_pass_packet = NULL; | |
89be2091 | 5278 | |
9b224c5e PA |
5279 | /* Make sure we send the program signals list the next time we |
5280 | resume. */ | |
5e4a05c4 TT |
5281 | xfree (rs->last_program_signals_packet); |
5282 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 5283 | |
ad9a8f3f | 5284 | remote_fileio_reset (); |
1dd41f16 NS |
5285 | reopen_exec_file (); |
5286 | reread_symbols (); | |
5287 | ||
5d93a237 TT |
5288 | rs->remote_desc = remote_serial_open (name); |
5289 | if (!rs->remote_desc) | |
c906108c SS |
5290 | perror_with_name (name); |
5291 | ||
5292 | if (baud_rate != -1) | |
5293 | { | |
5d93a237 | 5294 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5295 | { |
9b74d5d3 KB |
5296 | /* The requested speed could not be set. Error out to |
5297 | top level after closing remote_desc. Take care to | |
5298 | set remote_desc to NULL to avoid closing remote_desc | |
5299 | more than once. */ | |
5d93a237 TT |
5300 | serial_close (rs->remote_desc); |
5301 | rs->remote_desc = NULL; | |
c906108c SS |
5302 | perror_with_name (name); |
5303 | } | |
5304 | } | |
5305 | ||
236af5e3 | 5306 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5307 | serial_raw (rs->remote_desc); |
c906108c SS |
5308 | |
5309 | /* If there is something sitting in the buffer we might take it as a | |
5310 | response to a command, which would be bad. */ | |
5d93a237 | 5311 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5312 | |
5313 | if (from_tty) | |
5314 | { | |
5315 | puts_filtered ("Remote debugging using "); | |
5316 | puts_filtered (name); | |
5317 | puts_filtered ("\n"); | |
5318 | } | |
d9f719f1 PA |
5319 | |
5320 | remote_target *target | |
5321 | = extended_p ? &extended_remote_ops : &remote_ops; | |
5322 | push_target (target); /* Switch to using remote target now. */ | |
c906108c | 5323 | |
74531fed PA |
5324 | /* Register extra event sources in the event loop. */ |
5325 | remote_async_inferior_event_token | |
5326 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5327 | NULL); | |
5965e028 | 5328 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5329 | |
be2a5f71 DJ |
5330 | /* Reset the target state; these things will be queried either by |
5331 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5332 | reset_all_packet_configs_support (); |
74531fed | 5333 | rs->cached_wait_status = 0; |
be2a5f71 | 5334 | rs->explicit_packet_size = 0; |
a6f3e723 | 5335 | rs->noack_mode = 0; |
82f73884 | 5336 | rs->extended = extended_p; |
e24a49d8 | 5337 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5338 | rs->ctrlc_pending_p = 0; |
048094ac | 5339 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5340 | |
47f8a51d TT |
5341 | rs->general_thread = not_sent_ptid; |
5342 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5343 | rs->remote_traceframe_number = -1; |
c906108c | 5344 | |
3a00c802 PA |
5345 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5346 | ||
9d1f7ab2 | 5347 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5348 | rs->use_threadinfo_query = 1; |
5349 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5350 | |
dd194f6b | 5351 | rs->readahead_cache.invalidate (); |
80152258 | 5352 | |
c6ebd6cf | 5353 | if (target_async_permitted) |
92d1e331 | 5354 | { |
92d1e331 DJ |
5355 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5356 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5357 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5358 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5359 | around this. Eventually a mechanism that allows |
92d1e331 | 5360 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5361 | implemented. */ |
92d1e331 DJ |
5362 | wait_forever_enabled_p = 0; |
5363 | } | |
5364 | ||
23860348 | 5365 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5366 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5367 | |
74531fed PA |
5368 | /* Start afresh. */ |
5369 | init_thread_list (); | |
5370 | ||
36918e70 | 5371 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5372 | target (we'd otherwise be in an inconsistent state) and then |
5373 | propogate the error on up the exception chain. This ensures that | |
5374 | the caller doesn't stumble along blindly assuming that the | |
5375 | function succeeded. The CLI doesn't have this problem but other | |
5376 | UI's, such as MI do. | |
36918e70 AC |
5377 | |
5378 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5379 | this function should return an error indication letting the | |
ce2826aa | 5380 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5381 | ``target remote'' is directly wired to this function making that |
5382 | impossible. On a positive note, the CLI side of this problem has | |
5383 | been fixed - the function set_cmd_context() makes it possible for | |
5384 | all the ``target ....'' commands to share a common callback | |
5385 | function. See cli-dump.c. */ | |
109c3e39 | 5386 | { |
2d717e4f | 5387 | |
492d29ea | 5388 | TRY |
04bd08de | 5389 | { |
d9f719f1 | 5390 | target->start_remote (from_tty, extended_p); |
04bd08de | 5391 | } |
492d29ea | 5392 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5393 | { |
c8d104ad PA |
5394 | /* Pop the partially set up target - unless something else did |
5395 | already before throwing the exception. */ | |
5d93a237 | 5396 | if (rs->remote_desc != NULL) |
78a095c3 | 5397 | remote_unpush_target (); |
c6ebd6cf | 5398 | if (target_async_permitted) |
109c3e39 AC |
5399 | wait_forever_enabled_p = 1; |
5400 | throw_exception (ex); | |
5401 | } | |
492d29ea | 5402 | END_CATCH |
109c3e39 | 5403 | } |
c906108c | 5404 | |
f4abbc16 MM |
5405 | remote_btrace_reset (); |
5406 | ||
c6ebd6cf | 5407 | if (target_async_permitted) |
92d1e331 | 5408 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5409 | } |
5410 | ||
de0d863e DB |
5411 | /* Detach the specified process. */ |
5412 | ||
5413 | static void | |
5414 | remote_detach_pid (int pid) | |
5415 | { | |
5416 | struct remote_state *rs = get_remote_state (); | |
5417 | ||
5418 | if (remote_multi_process_p (rs)) | |
5419 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5420 | else | |
5421 | strcpy (rs->buf, "D"); | |
5422 | ||
5423 | putpkt (rs->buf); | |
5424 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5425 | ||
5426 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5427 | ; | |
5428 | else if (rs->buf[0] == '\0') | |
5429 | error (_("Remote doesn't know how to detach")); | |
5430 | else | |
5431 | error (_("Can't detach process.")); | |
5432 | } | |
5433 | ||
5434 | /* This detaches a program to which we previously attached, using | |
5435 | inferior_ptid to identify the process. After this is done, GDB | |
5436 | can be used to debug some other program. We better not have left | |
5437 | any breakpoints in the target program or it'll die when it hits | |
5438 | one. */ | |
c906108c SS |
5439 | |
5440 | static void | |
6e1e1966 | 5441 | remote_detach_1 (int from_tty, inferior *inf) |
c906108c | 5442 | { |
82f73884 | 5443 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5444 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5445 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5446 | int is_fork_parent; | |
c906108c | 5447 | |
2d717e4f DJ |
5448 | if (!target_has_execution) |
5449 | error (_("No process to detach from.")); | |
5450 | ||
0f48b757 | 5451 | target_announce_detach (from_tty); |
7cee1e54 | 5452 | |
c906108c | 5453 | /* Tell the remote target to detach. */ |
de0d863e | 5454 | remote_detach_pid (pid); |
82f73884 | 5455 | |
8020350c DB |
5456 | /* Exit only if this is the only active inferior. */ |
5457 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5458 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5459 | |
de0d863e DB |
5460 | /* Check to see if we are detaching a fork parent. Note that if we |
5461 | are detaching a fork child, tp == NULL. */ | |
5462 | is_fork_parent = (tp != NULL | |
5463 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5464 | ||
5465 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5466 | breakpoints that should be available for the followed inferior. */ | |
5467 | if (!is_fork_parent) | |
f67c0c91 | 5468 | { |
249b5733 PA |
5469 | /* Save the pid as a string before mourning, since that will |
5470 | unpush the remote target, and we need the string after. */ | |
5471 | std::string infpid = target_pid_to_str (pid_to_ptid (pid)); | |
f67c0c91 SDJ |
5472 | |
5473 | target_mourn_inferior (inferior_ptid); | |
5474 | if (print_inferior_events) | |
5475 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5476 | inf->num, infpid.c_str ()); | |
5477 | } | |
de0d863e DB |
5478 | else |
5479 | { | |
5480 | inferior_ptid = null_ptid; | |
5481 | detach_inferior (pid); | |
5482 | } | |
2d717e4f DJ |
5483 | } |
5484 | ||
f6ac5f3d PA |
5485 | void |
5486 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5487 | { |
6e1e1966 | 5488 | remote_detach_1 (from_tty, inf); |
2d717e4f DJ |
5489 | } |
5490 | ||
f6ac5f3d PA |
5491 | void |
5492 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5493 | { |
6e1e1966 | 5494 | remote_detach_1 (from_tty, inf); |
de0d863e DB |
5495 | } |
5496 | ||
5497 | /* Target follow-fork function for remote targets. On entry, and | |
5498 | at return, the current inferior is the fork parent. | |
5499 | ||
5500 | Note that although this is currently only used for extended-remote, | |
5501 | it is named remote_follow_fork in anticipation of using it for the | |
5502 | remote target as well. */ | |
5503 | ||
f6ac5f3d PA |
5504 | int |
5505 | remote_target::follow_fork (int follow_child, int detach_fork) | |
de0d863e DB |
5506 | { |
5507 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5508 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5509 | |
c269dbdb DB |
5510 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5511 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5512 | { |
5513 | /* When following the parent and detaching the child, we detach | |
5514 | the child here. For the case of following the child and | |
5515 | detaching the parent, the detach is done in the target- | |
5516 | independent follow fork code in infrun.c. We can't use | |
5517 | target_detach when detaching an unfollowed child because | |
5518 | the client side doesn't know anything about the child. */ | |
5519 | if (detach_fork && !follow_child) | |
5520 | { | |
5521 | /* Detach the fork child. */ | |
5522 | ptid_t child_ptid; | |
5523 | pid_t child_pid; | |
5524 | ||
5525 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5526 | child_pid = ptid_get_pid (child_ptid); | |
5527 | ||
5528 | remote_detach_pid (child_pid); | |
de0d863e DB |
5529 | } |
5530 | } | |
5531 | return 0; | |
c906108c SS |
5532 | } |
5533 | ||
94585166 DB |
5534 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5535 | in the program space of the new inferior. On entry and at return the | |
5536 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5537 | inferior, which may be the same as the exec'ing inferior unless | |
5538 | follow-exec-mode is "new". */ | |
5539 | ||
f6ac5f3d PA |
5540 | void |
5541 | remote_target::follow_exec (struct inferior *inf, char *execd_pathname) | |
94585166 DB |
5542 | { |
5543 | /* We know that this is a target file name, so if it has the "target:" | |
5544 | prefix we strip it off before saving it in the program space. */ | |
5545 | if (is_target_filename (execd_pathname)) | |
5546 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5547 | ||
5548 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5549 | } | |
5550 | ||
6ad8ae5c DJ |
5551 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5552 | ||
f6ac5f3d PA |
5553 | void |
5554 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5555 | { |
43ff13b4 | 5556 | if (args) |
2d717e4f | 5557 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5558 | |
8020350c DB |
5559 | /* Make sure we unpush even the extended remote targets. Calling |
5560 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5561 | unpush if there is more than one inferior left. */ | |
f6ac5f3d | 5562 | unpush_target (this); |
8020350c | 5563 | generic_mourn_inferior (); |
2d717e4f | 5564 | |
43ff13b4 JM |
5565 | if (from_tty) |
5566 | puts_filtered ("Ending remote debugging.\n"); | |
5567 | } | |
5568 | ||
2d717e4f DJ |
5569 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5570 | be chatty about it. */ | |
5571 | ||
f6ac5f3d PA |
5572 | void |
5573 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5574 | { |
5575 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5576 | int pid; |
96ef3384 | 5577 | char *wait_status = NULL; |
2d717e4f | 5578 | |
74164c56 | 5579 | pid = parse_pid_to_attach (args); |
2d717e4f | 5580 | |
74164c56 JK |
5581 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5582 | way as in other targets. */ | |
2d717e4f | 5583 | |
4082afcc | 5584 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5585 | error (_("This target does not support attaching to a process")); |
5586 | ||
7cee1e54 PA |
5587 | if (from_tty) |
5588 | { | |
5589 | char *exec_file = get_exec_file (0); | |
5590 | ||
5591 | if (exec_file) | |
5592 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5593 | target_pid_to_str (pid_to_ptid (pid))); | |
5594 | else | |
5595 | printf_unfiltered (_("Attaching to %s\n"), | |
5596 | target_pid_to_str (pid_to_ptid (pid))); | |
5597 | ||
5598 | gdb_flush (gdb_stdout); | |
5599 | } | |
5600 | ||
bba74b36 | 5601 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5602 | putpkt (rs->buf); |
5603 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5604 | ||
4082afcc PA |
5605 | switch (packet_ok (rs->buf, |
5606 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5607 | { |
4082afcc | 5608 | case PACKET_OK: |
6efcd9a8 | 5609 | if (!target_is_non_stop_p ()) |
74531fed PA |
5610 | { |
5611 | /* Save the reply for later. */ | |
224c3ddb | 5612 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5613 | strcpy (wait_status, rs->buf); |
5614 | } | |
5615 | else if (strcmp (rs->buf, "OK") != 0) | |
5616 | error (_("Attaching to %s failed with: %s"), | |
5617 | target_pid_to_str (pid_to_ptid (pid)), | |
5618 | rs->buf); | |
4082afcc PA |
5619 | break; |
5620 | case PACKET_UNKNOWN: | |
5621 | error (_("This target does not support attaching to a process")); | |
5622 | default: | |
5623 | error (_("Attaching to %s failed"), | |
5624 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5625 | } |
2d717e4f | 5626 | |
1b6e6f5c | 5627 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5628 | |
2d717e4f | 5629 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5630 | |
6efcd9a8 | 5631 | if (target_is_non_stop_p ()) |
bad34192 PA |
5632 | { |
5633 | struct thread_info *thread; | |
79d7f229 | 5634 | |
bad34192 | 5635 | /* Get list of threads. */ |
f6ac5f3d | 5636 | update_thread_list (); |
82f73884 | 5637 | |
bad34192 PA |
5638 | thread = first_thread_of_process (pid); |
5639 | if (thread) | |
5640 | inferior_ptid = thread->ptid; | |
5641 | else | |
5642 | inferior_ptid = pid_to_ptid (pid); | |
5643 | ||
5644 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5645 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5646 | } |
74531fed | 5647 | else |
bad34192 PA |
5648 | { |
5649 | /* Now, if we have thread information, update inferior_ptid. */ | |
5650 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5651 | ||
5652 | /* Add the main thread to the thread list. */ | |
00aecdcf PA |
5653 | thread_info *thr = add_thread_silent (inferior_ptid); |
5654 | /* Don't consider the thread stopped until we've processed the | |
5655 | saved stop reply. */ | |
5656 | set_executing (thr->ptid, true); | |
bad34192 | 5657 | } |
c0a2216e | 5658 | |
96ef3384 UW |
5659 | /* Next, if the target can specify a description, read it. We do |
5660 | this before anything involving memory or registers. */ | |
5661 | target_find_description (); | |
5662 | ||
6efcd9a8 | 5663 | if (!target_is_non_stop_p ()) |
74531fed PA |
5664 | { |
5665 | /* Use the previously fetched status. */ | |
5666 | gdb_assert (wait_status != NULL); | |
5667 | ||
5668 | if (target_can_async_p ()) | |
5669 | { | |
722247f1 YQ |
5670 | struct notif_event *reply |
5671 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5672 | |
722247f1 | 5673 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5674 | |
6a3753b3 | 5675 | target_async (1); |
74531fed PA |
5676 | } |
5677 | else | |
5678 | { | |
5679 | gdb_assert (wait_status != NULL); | |
5680 | strcpy (rs->buf, wait_status); | |
5681 | rs->cached_wait_status = 1; | |
5682 | } | |
5683 | } | |
5684 | else | |
5685 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5686 | } |
5687 | ||
b9c1d481 AS |
5688 | /* Implementation of the to_post_attach method. */ |
5689 | ||
f6ac5f3d PA |
5690 | void |
5691 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5692 | { |
6efcd9a8 PA |
5693 | /* Get text, data & bss offsets. */ |
5694 | get_offsets (); | |
5695 | ||
b9c1d481 AS |
5696 | /* In certain cases GDB might not have had the chance to start |
5697 | symbol lookup up until now. This could happen if the debugged | |
5698 | binary is not using shared libraries, the vsyscall page is not | |
5699 | present (on Linux) and the binary itself hadn't changed since the | |
5700 | debugging process was started. */ | |
5701 | if (symfile_objfile != NULL) | |
5702 | remote_check_symbols(); | |
5703 | } | |
5704 | ||
c906108c | 5705 | \f |
506fb367 DJ |
5706 | /* Check for the availability of vCont. This function should also check |
5707 | the response. */ | |
c906108c SS |
5708 | |
5709 | static void | |
6d820c5c | 5710 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5711 | { |
2e9f7625 | 5712 | char *buf; |
6d820c5c | 5713 | |
2e9f7625 DJ |
5714 | strcpy (rs->buf, "vCont?"); |
5715 | putpkt (rs->buf); | |
6d820c5c | 5716 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5717 | buf = rs->buf; |
c906108c | 5718 | |
506fb367 | 5719 | /* Make sure that the features we assume are supported. */ |
61012eef | 5720 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5721 | { |
5722 | char *p = &buf[5]; | |
750ce8d1 | 5723 | int support_c, support_C; |
506fb367 | 5724 | |
750ce8d1 YQ |
5725 | rs->supports_vCont.s = 0; |
5726 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5727 | support_c = 0; |
5728 | support_C = 0; | |
d458bd84 | 5729 | rs->supports_vCont.t = 0; |
c1e36e3e | 5730 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5731 | while (p && *p == ';') |
5732 | { | |
5733 | p++; | |
5734 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5735 | rs->supports_vCont.s = 1; |
506fb367 | 5736 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5737 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5738 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5739 | support_c = 1; | |
5740 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5741 | support_C = 1; | |
74531fed | 5742 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5743 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5744 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5745 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5746 | |
5747 | p = strchr (p, ';'); | |
5748 | } | |
c906108c | 5749 | |
750ce8d1 YQ |
5750 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5751 | BUF will make packet_ok disable the packet. */ | |
5752 | if (!support_c || !support_C) | |
506fb367 DJ |
5753 | buf[0] = 0; |
5754 | } | |
c906108c | 5755 | |
444abaca | 5756 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5757 | } |
c906108c | 5758 | |
0d8f58ca PA |
5759 | /* Helper function for building "vCont" resumptions. Write a |
5760 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5761 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5762 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5763 | resumed thread should be single-stepped and/or signalled. If PTID | |
5764 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5765 | represents a process, then all threads of the process are resumed; | |
5766 | the thread to be stepped and/or signalled is given in the global | |
5767 | INFERIOR_PTID. */ | |
5768 | ||
5769 | static char * | |
5770 | append_resumption (char *p, char *endp, | |
2ea28649 | 5771 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5772 | { |
5773 | struct remote_state *rs = get_remote_state (); | |
5774 | ||
a493e3e2 | 5775 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5776 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5777 | else if (step |
5778 | /* GDB is willing to range step. */ | |
5779 | && use_range_stepping | |
5780 | /* Target supports range stepping. */ | |
5781 | && rs->supports_vCont.r | |
5782 | /* We don't currently support range stepping multiple | |
5783 | threads with a wildcard (though the protocol allows it, | |
5784 | so stubs shouldn't make an active effort to forbid | |
5785 | it). */ | |
5786 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5787 | { | |
5788 | struct thread_info *tp; | |
5789 | ||
5790 | if (ptid_equal (ptid, minus_one_ptid)) | |
5791 | { | |
5792 | /* If we don't know about the target thread's tid, then | |
5793 | we're resuming magic_null_ptid (see caller). */ | |
5794 | tp = find_thread_ptid (magic_null_ptid); | |
5795 | } | |
5796 | else | |
5797 | tp = find_thread_ptid (ptid); | |
5798 | gdb_assert (tp != NULL); | |
5799 | ||
5800 | if (tp->control.may_range_step) | |
5801 | { | |
5802 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5803 | ||
5804 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5805 | phex_nz (tp->control.step_range_start, | |
5806 | addr_size), | |
5807 | phex_nz (tp->control.step_range_end, | |
5808 | addr_size)); | |
5809 | } | |
5810 | else | |
5811 | p += xsnprintf (p, endp - p, ";s"); | |
5812 | } | |
0d8f58ca PA |
5813 | else if (step) |
5814 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5815 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5816 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5817 | else | |
5818 | p += xsnprintf (p, endp - p, ";c"); | |
5819 | ||
5820 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5821 | { | |
5822 | ptid_t nptid; | |
5823 | ||
5824 | /* All (-1) threads of process. */ | |
ba348170 | 5825 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5826 | |
5827 | p += xsnprintf (p, endp - p, ":"); | |
5828 | p = write_ptid (p, endp, nptid); | |
5829 | } | |
5830 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5831 | { | |
5832 | p += xsnprintf (p, endp - p, ":"); | |
5833 | p = write_ptid (p, endp, ptid); | |
5834 | } | |
5835 | ||
5836 | return p; | |
5837 | } | |
5838 | ||
799a2abe PA |
5839 | /* Clear the thread's private info on resume. */ |
5840 | ||
5841 | static void | |
5842 | resume_clear_thread_private_info (struct thread_info *thread) | |
5843 | { | |
5844 | if (thread->priv != NULL) | |
5845 | { | |
7aabaf9d SM |
5846 | remote_thread_info *priv = get_remote_thread_info (thread); |
5847 | ||
5848 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5849 | priv->watch_data_address = 0; | |
799a2abe PA |
5850 | } |
5851 | } | |
5852 | ||
e5ef252a PA |
5853 | /* Append a vCont continue-with-signal action for threads that have a |
5854 | non-zero stop signal. */ | |
5855 | ||
5856 | static char * | |
5857 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5858 | { | |
5859 | struct thread_info *thread; | |
5860 | ||
034f788c | 5861 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5862 | if (ptid_match (thread->ptid, ptid) |
5863 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5864 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5865 | { |
5866 | p = append_resumption (p, endp, thread->ptid, | |
5867 | 0, thread->suspend.stop_signal); | |
5868 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5869 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5870 | } |
5871 | ||
5872 | return p; | |
5873 | } | |
5874 | ||
7b68ffbb PA |
5875 | /* Set the target running, using the packets that use Hc |
5876 | (c/s/C/S). */ | |
5877 | ||
5878 | static void | |
5879 | remote_resume_with_hc (struct target_ops *ops, | |
5880 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5881 | { | |
5882 | struct remote_state *rs = get_remote_state (); | |
5883 | struct thread_info *thread; | |
5884 | char *buf; | |
5885 | ||
5886 | rs->last_sent_signal = siggnal; | |
5887 | rs->last_sent_step = step; | |
5888 | ||
5889 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5890 | thread. */ | |
5891 | if (ptid_equal (ptid, minus_one_ptid)) | |
5892 | set_continue_thread (any_thread_ptid); | |
5893 | else | |
5894 | set_continue_thread (ptid); | |
5895 | ||
5896 | ALL_NON_EXITED_THREADS (thread) | |
5897 | resume_clear_thread_private_info (thread); | |
5898 | ||
5899 | buf = rs->buf; | |
5900 | if (execution_direction == EXEC_REVERSE) | |
5901 | { | |
5902 | /* We don't pass signals to the target in reverse exec mode. */ | |
5903 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5904 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5905 | siggnal); | |
5906 | ||
5907 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5908 | error (_("Remote reverse-step not supported.")); | |
5909 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5910 | error (_("Remote reverse-continue not supported.")); | |
5911 | ||
5912 | strcpy (buf, step ? "bs" : "bc"); | |
5913 | } | |
5914 | else if (siggnal != GDB_SIGNAL_0) | |
5915 | { | |
5916 | buf[0] = step ? 'S' : 'C'; | |
5917 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5918 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5919 | buf[3] = '\0'; | |
5920 | } | |
5921 | else | |
5922 | strcpy (buf, step ? "s" : "c"); | |
5923 | ||
5924 | putpkt (buf); | |
5925 | } | |
5926 | ||
506fb367 DJ |
5927 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5928 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5929 | resumed thread should be single-stepped and/or signalled. If PTID |
5930 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5931 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5932 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5933 | |
7b68ffbb PA |
5934 | This function issues a strict subset of all possible vCont commands |
5935 | at the moment. */ | |
44eaed12 | 5936 | |
506fb367 | 5937 | static int |
7b68ffbb | 5938 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5939 | { |
5940 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5941 | char *p; |
5942 | char *endp; | |
44eaed12 | 5943 | |
7b68ffbb PA |
5944 | /* No reverse execution actions defined for vCont. */ |
5945 | if (execution_direction == EXEC_REVERSE) | |
5946 | return 0; | |
5947 | ||
4082afcc | 5948 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5949 | remote_vcont_probe (rs); |
44eaed12 | 5950 | |
4082afcc | 5951 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5952 | return 0; |
44eaed12 | 5953 | |
82f73884 PA |
5954 | p = rs->buf; |
5955 | endp = rs->buf + get_remote_packet_size (); | |
5956 | ||
506fb367 DJ |
5957 | /* If we could generate a wider range of packets, we'd have to worry |
5958 | about overflowing BUF. Should there be a generic | |
5959 | "multi-part-packet" packet? */ | |
5960 | ||
0d8f58ca PA |
5961 | p += xsnprintf (p, endp - p, "vCont"); |
5962 | ||
79d7f229 | 5963 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5964 | { |
79d7f229 PA |
5965 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5966 | so we don't have any TID numbers the inferior will | |
5967 | understand. Make sure to only send forms that do not specify | |
5968 | a TID. */ | |
a9cbf802 | 5969 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5970 | } |
0d8f58ca | 5971 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5972 | { |
0d8f58ca PA |
5973 | /* Resume all threads (of all processes, or of a single |
5974 | process), with preference for INFERIOR_PTID. This assumes | |
5975 | inferior_ptid belongs to the set of all threads we are about | |
5976 | to resume. */ | |
a493e3e2 | 5977 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5978 | { |
0d8f58ca PA |
5979 | /* Step inferior_ptid, with or without signal. */ |
5980 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5981 | } |
0d8f58ca | 5982 | |
e5ef252a PA |
5983 | /* Also pass down any pending signaled resumption for other |
5984 | threads not the current. */ | |
5985 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5986 | ||
0d8f58ca | 5987 | /* And continue others without a signal. */ |
a493e3e2 | 5988 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5989 | } |
5990 | else | |
506fb367 DJ |
5991 | { |
5992 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5993 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5994 | } |
c906108c | 5995 | |
82f73884 PA |
5996 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5997 | putpkt (rs->buf); | |
506fb367 | 5998 | |
6efcd9a8 | 5999 | if (target_is_non_stop_p ()) |
74531fed PA |
6000 | { |
6001 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6002 | reply will be reported asynchronously by means of a `%Stop' | |
6003 | notification. */ | |
6004 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6005 | if (strcmp (rs->buf, "OK") != 0) | |
6006 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
6007 | } | |
6008 | ||
506fb367 | 6009 | return 1; |
c906108c | 6010 | } |
43ff13b4 | 6011 | |
506fb367 DJ |
6012 | /* Tell the remote machine to resume. */ |
6013 | ||
f6ac5f3d PA |
6014 | void |
6015 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6016 | { |
d01949b6 | 6017 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6018 | |
85ad3aaf PA |
6019 | /* When connected in non-stop mode, the core resumes threads |
6020 | individually. Resuming remote threads directly in target_resume | |
6021 | would thus result in sending one packet per thread. Instead, to | |
6022 | minimize roundtrip latency, here we just store the resume | |
6023 | request; the actual remote resumption will be done in | |
6024 | target_commit_resume / remote_commit_resume, where we'll be able | |
6025 | to do vCont action coalescing. */ | |
f6ac5f3d | 6026 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6027 | { |
7aabaf9d | 6028 | remote_thread_info *remote_thr; |
85ad3aaf PA |
6029 | |
6030 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
7aabaf9d | 6031 | remote_thr = get_remote_thread_info (inferior_ptid); |
85ad3aaf | 6032 | else |
7aabaf9d SM |
6033 | remote_thr = get_remote_thread_info (ptid); |
6034 | ||
85ad3aaf PA |
6035 | remote_thr->last_resume_step = step; |
6036 | remote_thr->last_resume_sig = siggnal; | |
6037 | return; | |
6038 | } | |
6039 | ||
722247f1 YQ |
6040 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6041 | (explained in remote-notif.c:handle_notification) so | |
6042 | remote_notif_process is not called. We need find a place where | |
6043 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6044 | before resuming inferior, because inferior was stopped and no RSP | |
6045 | traffic at that moment. */ | |
6efcd9a8 | 6046 | if (!target_is_non_stop_p ()) |
5965e028 | 6047 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6048 | |
f6ac5f3d | 6049 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6050 | |
7b68ffbb PA |
6051 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6052 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
f6ac5f3d | 6053 | remote_resume_with_hc (this, ptid, step, siggnal); |
43ff13b4 | 6054 | |
2acceee2 | 6055 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6056 | with the event loop. NOTE: this is the one place where all the |
6057 | execution commands end up. We could alternatively do this in each | |
23860348 | 6058 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6059 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6060 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6061 | NOT asynchronously. */ |
362646f5 | 6062 | if (target_can_async_p ()) |
6a3753b3 | 6063 | target_async (1); |
e24a49d8 PA |
6064 | |
6065 | /* We've just told the target to resume. The remote server will | |
6066 | wait for the inferior to stop, and then send a stop reply. In | |
6067 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6068 | because the stub wouldn't be ready to process it. This applies |
6069 | only to the base all-stop protocol, however. In non-stop (which | |
6070 | only supports vCont), the stub replies with an "OK", and is | |
6071 | immediate able to process further serial input. */ | |
6efcd9a8 | 6072 | if (!target_is_non_stop_p ()) |
74531fed | 6073 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6074 | } |
85ad3aaf PA |
6075 | |
6076 | static void check_pending_events_prevent_wildcard_vcont | |
6077 | (int *may_global_wildcard_vcont); | |
6078 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
6079 | ||
6080 | /* Private per-inferior info for target remote processes. */ | |
6081 | ||
089354bb | 6082 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6083 | { |
6084 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6085 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6086 | }; |
6087 | ||
089354bb SM |
6088 | /* Get the remote private inferior data associated to INF. */ |
6089 | ||
6090 | static remote_inferior * | |
6091 | get_remote_inferior (inferior *inf) | |
6092 | { | |
6093 | if (inf->priv == NULL) | |
6094 | inf->priv.reset (new remote_inferior); | |
6095 | ||
6096 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6097 | } | |
6098 | ||
f5db4863 | 6099 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6100 | outgoing packet buffer. This is used to send multiple vCont |
6101 | packets if we have more actions than would fit a single packet. */ | |
6102 | ||
f5db4863 | 6103 | class vcont_builder |
85ad3aaf | 6104 | { |
f5db4863 PA |
6105 | public: |
6106 | vcont_builder () | |
6107 | { | |
6108 | restart (); | |
6109 | } | |
6110 | ||
6111 | void flush (); | |
6112 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6113 | ||
6114 | private: | |
6115 | void restart (); | |
6116 | ||
85ad3aaf PA |
6117 | /* Pointer to the first action. P points here if no action has been |
6118 | appended yet. */ | |
f5db4863 | 6119 | char *m_first_action; |
85ad3aaf PA |
6120 | |
6121 | /* Where the next action will be appended. */ | |
f5db4863 | 6122 | char *m_p; |
85ad3aaf PA |
6123 | |
6124 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6125 | char *m_endp; |
85ad3aaf PA |
6126 | }; |
6127 | ||
6128 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6129 | ||
f5db4863 PA |
6130 | void |
6131 | vcont_builder::restart () | |
85ad3aaf PA |
6132 | { |
6133 | struct remote_state *rs = get_remote_state (); | |
6134 | ||
f5db4863 PA |
6135 | m_p = rs->buf; |
6136 | m_endp = rs->buf + get_remote_packet_size (); | |
6137 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); | |
6138 | m_first_action = m_p; | |
85ad3aaf PA |
6139 | } |
6140 | ||
6141 | /* If the vCont packet being built has any action, send it to the | |
6142 | remote end. */ | |
6143 | ||
f5db4863 PA |
6144 | void |
6145 | vcont_builder::flush () | |
85ad3aaf PA |
6146 | { |
6147 | struct remote_state *rs; | |
6148 | ||
f5db4863 | 6149 | if (m_p == m_first_action) |
85ad3aaf PA |
6150 | return; |
6151 | ||
6152 | rs = get_remote_state (); | |
6153 | putpkt (rs->buf); | |
6154 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6155 | if (strcmp (rs->buf, "OK") != 0) | |
6156 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
6157 | } | |
6158 | ||
6159 | /* The largest action is range-stepping, with its two addresses. This | |
6160 | is more than sufficient. If a new, bigger action is created, it'll | |
6161 | quickly trigger a failed assertion in append_resumption (and we'll | |
6162 | just bump this). */ | |
6163 | #define MAX_ACTION_SIZE 200 | |
6164 | ||
6165 | /* Append a new vCont action in the outgoing packet being built. If | |
6166 | the action doesn't fit the packet along with previous actions, push | |
6167 | what we've got so far to the remote end and start over a new vCont | |
6168 | packet (with the new action). */ | |
6169 | ||
f5db4863 PA |
6170 | void |
6171 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6172 | { |
6173 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6174 | |
f5db4863 PA |
6175 | char *endp = append_resumption (buf, buf + sizeof (buf), |
6176 | ptid, step, siggnal); | |
85ad3aaf PA |
6177 | |
6178 | /* Check whether this new action would fit in the vCont packet along | |
6179 | with previous actions. If not, send what we've got so far and | |
6180 | start a new vCont packet. */ | |
f5db4863 PA |
6181 | size_t rsize = endp - buf; |
6182 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6183 | { |
f5db4863 PA |
6184 | flush (); |
6185 | restart (); | |
85ad3aaf PA |
6186 | |
6187 | /* Should now fit. */ | |
f5db4863 | 6188 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6189 | } |
6190 | ||
f5db4863 PA |
6191 | memcpy (m_p, buf, rsize); |
6192 | m_p += rsize; | |
6193 | *m_p = '\0'; | |
85ad3aaf PA |
6194 | } |
6195 | ||
6196 | /* to_commit_resume implementation. */ | |
6197 | ||
f6ac5f3d PA |
6198 | void |
6199 | remote_target::commit_resume () | |
85ad3aaf | 6200 | { |
85ad3aaf PA |
6201 | struct inferior *inf; |
6202 | struct thread_info *tp; | |
6203 | int any_process_wildcard; | |
6204 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6205 | |
6206 | /* If connected in all-stop mode, we'd send the remote resume | |
6207 | request directly from remote_resume. Likewise if | |
6208 | reverse-debugging, as there are no defined vCont actions for | |
6209 | reverse execution. */ | |
f6ac5f3d | 6210 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6211 | return; |
6212 | ||
6213 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6214 | instead of resuming all threads of each process individually. | |
6215 | However, if any thread of a process must remain halted, we can't | |
6216 | send wildcard resumes and must send one action per thread. | |
6217 | ||
6218 | Care must be taken to not resume threads/processes the server | |
6219 | side already told us are stopped, but the core doesn't know about | |
6220 | yet, because the events are still in the vStopped notification | |
6221 | queue. For example: | |
6222 | ||
6223 | #1 => vCont s:p1.1;c | |
6224 | #2 <= OK | |
6225 | #3 <= %Stopped T05 p1.1 | |
6226 | #4 => vStopped | |
6227 | #5 <= T05 p1.2 | |
6228 | #6 => vStopped | |
6229 | #7 <= OK | |
6230 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6231 | #9 => vCont s:p1.1;c | |
6232 | ||
6233 | The last vCont above would resume thread p1.2 by mistake, because | |
6234 | the server has no idea that the event for p1.2 had not been | |
6235 | handled yet. | |
6236 | ||
6237 | The server side must similarly ignore resume actions for the | |
6238 | thread that has a pending %Stopped notification (and any other | |
6239 | threads with events pending), until GDB acks the notification | |
6240 | with vStopped. Otherwise, e.g., the following case is | |
6241 | mishandled: | |
6242 | ||
6243 | #1 => g (or any other packet) | |
6244 | #2 <= [registers] | |
6245 | #3 <= %Stopped T05 p1.2 | |
6246 | #4 => vCont s:p1.1;c | |
6247 | #5 <= OK | |
6248 | ||
6249 | Above, the server must not resume thread p1.2. GDB can't know | |
6250 | that p1.2 stopped until it acks the %Stopped notification, and | |
6251 | since from GDB's perspective all threads should be running, it | |
6252 | sends a "c" action. | |
6253 | ||
6254 | Finally, special care must also be given to handling fork/vfork | |
6255 | events. A (v)fork event actually tells us that two processes | |
6256 | stopped -- the parent and the child. Until we follow the fork, | |
6257 | we must not resume the child. Therefore, if we have a pending | |
6258 | fork follow, we must not send a global wildcard resume action | |
6259 | (vCont;c). We can still send process-wide wildcards though. */ | |
6260 | ||
6261 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6262 | may_global_wildcard_vcont = 1; | |
6263 | ||
6264 | /* And assume every process is individually wildcard-able too. */ | |
6265 | ALL_NON_EXITED_INFERIORS (inf) | |
6266 | { | |
089354bb SM |
6267 | remote_inferior *priv = get_remote_inferior (inf); |
6268 | ||
6269 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6270 | } |
6271 | ||
6272 | /* Check for any pending events (not reported or processed yet) and | |
6273 | disable process and global wildcard resumes appropriately. */ | |
6274 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6275 | ||
6276 | ALL_NON_EXITED_THREADS (tp) | |
6277 | { | |
6278 | /* If a thread of a process is not meant to be resumed, then we | |
6279 | can't wildcard that process. */ | |
6280 | if (!tp->executing) | |
6281 | { | |
089354bb | 6282 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6283 | |
6284 | /* And if we can't wildcard a process, we can't wildcard | |
6285 | everything either. */ | |
6286 | may_global_wildcard_vcont = 0; | |
6287 | continue; | |
6288 | } | |
6289 | ||
6290 | /* If a thread is the parent of an unfollowed fork, then we | |
6291 | can't do a global wildcard, as that would resume the fork | |
6292 | child. */ | |
6293 | if (is_pending_fork_parent_thread (tp)) | |
6294 | may_global_wildcard_vcont = 0; | |
6295 | } | |
6296 | ||
6297 | /* Now let's build the vCont packet(s). Actions must be appended | |
6298 | from narrower to wider scopes (thread -> process -> global). If | |
6299 | we end up with too many actions for a single packet vcont_builder | |
6300 | flushes the current vCont packet to the remote side and starts a | |
6301 | new one. */ | |
f5db4863 | 6302 | struct vcont_builder vcont_builder; |
85ad3aaf PA |
6303 | |
6304 | /* Threads first. */ | |
6305 | ALL_NON_EXITED_THREADS (tp) | |
6306 | { | |
7aabaf9d | 6307 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6308 | |
6309 | if (!tp->executing || remote_thr->vcont_resumed) | |
6310 | continue; | |
6311 | ||
6312 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6313 | ||
6314 | if (!remote_thr->last_resume_step | |
6315 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6316 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6317 | { |
6318 | /* We'll send a wildcard resume instead. */ | |
6319 | remote_thr->vcont_resumed = 1; | |
6320 | continue; | |
6321 | } | |
6322 | ||
f5db4863 | 6323 | vcont_builder.push_action (tp->ptid, |
85ad3aaf PA |
6324 | remote_thr->last_resume_step, |
6325 | remote_thr->last_resume_sig); | |
6326 | remote_thr->vcont_resumed = 1; | |
6327 | } | |
6328 | ||
6329 | /* Now check whether we can send any process-wide wildcard. This is | |
6330 | to avoid sending a global wildcard in the case nothing is | |
6331 | supposed to be resumed. */ | |
6332 | any_process_wildcard = 0; | |
6333 | ||
6334 | ALL_NON_EXITED_INFERIORS (inf) | |
6335 | { | |
089354bb | 6336 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6337 | { |
6338 | any_process_wildcard = 1; | |
6339 | break; | |
6340 | } | |
6341 | } | |
6342 | ||
6343 | if (any_process_wildcard) | |
6344 | { | |
6345 | /* If all processes are wildcard-able, then send a single "c" | |
6346 | action, otherwise, send an "all (-1) threads of process" | |
6347 | continue action for each running process, if any. */ | |
6348 | if (may_global_wildcard_vcont) | |
6349 | { | |
f5db4863 PA |
6350 | vcont_builder.push_action (minus_one_ptid, |
6351 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6352 | } |
6353 | else | |
6354 | { | |
6355 | ALL_NON_EXITED_INFERIORS (inf) | |
6356 | { | |
089354bb | 6357 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6358 | { |
f5db4863 PA |
6359 | vcont_builder.push_action (pid_to_ptid (inf->pid), |
6360 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6361 | } |
6362 | } | |
6363 | } | |
6364 | } | |
6365 | ||
f5db4863 | 6366 | vcont_builder.flush (); |
85ad3aaf PA |
6367 | } |
6368 | ||
c906108c | 6369 | \f |
43ff13b4 | 6370 | |
74531fed PA |
6371 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6372 | thread, all threads of a remote process, or all threads of all | |
6373 | processes. */ | |
6374 | ||
6375 | static void | |
6376 | remote_stop_ns (ptid_t ptid) | |
6377 | { | |
6378 | struct remote_state *rs = get_remote_state (); | |
6379 | char *p = rs->buf; | |
6380 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6381 | |
4082afcc | 6382 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6383 | remote_vcont_probe (rs); |
6384 | ||
d458bd84 | 6385 | if (!rs->supports_vCont.t) |
74531fed PA |
6386 | error (_("Remote server does not support stopping threads")); |
6387 | ||
f91d3df5 PA |
6388 | if (ptid_equal (ptid, minus_one_ptid) |
6389 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6390 | p += xsnprintf (p, endp - p, "vCont;t"); |
6391 | else | |
6392 | { | |
6393 | ptid_t nptid; | |
6394 | ||
74531fed PA |
6395 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6396 | ||
6397 | if (ptid_is_pid (ptid)) | |
6398 | /* All (-1) threads of process. */ | |
ba348170 | 6399 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6400 | else |
6401 | { | |
6402 | /* Small optimization: if we already have a stop reply for | |
6403 | this thread, no use in telling the stub we want this | |
6404 | stopped. */ | |
6405 | if (peek_stop_reply (ptid)) | |
6406 | return; | |
6407 | ||
6408 | nptid = ptid; | |
6409 | } | |
6410 | ||
a9cbf802 | 6411 | write_ptid (p, endp, nptid); |
74531fed PA |
6412 | } |
6413 | ||
6414 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6415 | come in asynchronously by notification. */ | |
6416 | putpkt (rs->buf); | |
6417 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6418 | if (strcmp (rs->buf, "OK") != 0) | |
6419 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6420 | } | |
6421 | ||
bfedc46a PA |
6422 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6423 | interrupt the remote target. It is undefined which thread of which | |
6424 | process reports the interrupt. */ | |
74531fed PA |
6425 | |
6426 | static void | |
de979965 | 6427 | remote_interrupt_as (void) |
74531fed PA |
6428 | { |
6429 | struct remote_state *rs = get_remote_state (); | |
6430 | ||
3a29589a DJ |
6431 | rs->ctrlc_pending_p = 1; |
6432 | ||
74531fed PA |
6433 | /* If the inferior is stopped already, but the core didn't know |
6434 | about it yet, just ignore the request. The cached wait status | |
6435 | will be collected in remote_wait. */ | |
6436 | if (rs->cached_wait_status) | |
6437 | return; | |
6438 | ||
9a7071a8 JB |
6439 | /* Send interrupt_sequence to remote target. */ |
6440 | send_interrupt_sequence (); | |
74531fed PA |
6441 | } |
6442 | ||
de979965 PA |
6443 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6444 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6445 | reports the interrupt. Throws an error if the packet is not |
6446 | supported by the server. */ | |
de979965 | 6447 | |
e42de8c7 | 6448 | static void |
de979965 PA |
6449 | remote_interrupt_ns (void) |
6450 | { | |
6451 | struct remote_state *rs = get_remote_state (); | |
6452 | char *p = rs->buf; | |
6453 | char *endp = rs->buf + get_remote_packet_size (); | |
6454 | ||
6455 | xsnprintf (p, endp - p, "vCtrlC"); | |
6456 | ||
6457 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6458 | come in asynchronously by notification. */ | |
6459 | putpkt (rs->buf); | |
6460 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6461 | ||
6462 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6463 | { | |
6464 | case PACKET_OK: | |
6465 | break; | |
6466 | case PACKET_UNKNOWN: | |
e42de8c7 | 6467 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6468 | case PACKET_ERROR: |
6469 | error (_("Interrupting target failed: %s"), rs->buf); | |
6470 | } | |
de979965 PA |
6471 | } |
6472 | ||
bfedc46a | 6473 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6474 | |
f6ac5f3d PA |
6475 | void |
6476 | remote_target::stop (ptid_t ptid) | |
c906108c | 6477 | { |
7a292a7a | 6478 | if (remote_debug) |
0f71a2f6 | 6479 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6480 | |
6efcd9a8 | 6481 | if (target_is_non_stop_p ()) |
74531fed | 6482 | remote_stop_ns (ptid); |
c906108c | 6483 | else |
bfedc46a PA |
6484 | { |
6485 | /* We don't currently have a way to transparently pause the | |
6486 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6487 | remote_interrupt_as (); |
bfedc46a PA |
6488 | } |
6489 | } | |
6490 | ||
6491 | /* Implement the to_interrupt function for the remote targets. */ | |
6492 | ||
f6ac5f3d PA |
6493 | void |
6494 | remote_target::interrupt () | |
bfedc46a PA |
6495 | { |
6496 | if (remote_debug) | |
6497 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6498 | ||
e42de8c7 PA |
6499 | if (target_is_non_stop_p ()) |
6500 | remote_interrupt_ns (); | |
bfedc46a | 6501 | else |
e42de8c7 | 6502 | remote_interrupt_as (); |
c906108c SS |
6503 | } |
6504 | ||
93692b58 PA |
6505 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6506 | ||
f6ac5f3d PA |
6507 | void |
6508 | remote_target::pass_ctrlc () | |
93692b58 PA |
6509 | { |
6510 | struct remote_state *rs = get_remote_state (); | |
6511 | ||
6512 | if (remote_debug) | |
6513 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6514 | ||
6515 | /* If we're starting up, we're not fully synced yet. Quit | |
6516 | immediately. */ | |
6517 | if (rs->starting_up) | |
6518 | quit (); | |
6519 | /* If ^C has already been sent once, offer to disconnect. */ | |
6520 | else if (rs->ctrlc_pending_p) | |
6521 | interrupt_query (); | |
6522 | else | |
e671cd59 | 6523 | target_interrupt (); |
93692b58 PA |
6524 | } |
6525 | ||
c906108c SS |
6526 | /* Ask the user what to do when an interrupt is received. */ |
6527 | ||
6528 | static void | |
fba45db2 | 6529 | interrupt_query (void) |
c906108c | 6530 | { |
abc56d60 | 6531 | struct remote_state *rs = get_remote_state (); |
c906108c | 6532 | |
abc56d60 | 6533 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6534 | { |
abc56d60 PA |
6535 | if (query (_("The target is not responding to interrupt requests.\n" |
6536 | "Stop debugging it? "))) | |
74531fed | 6537 | { |
78a095c3 | 6538 | remote_unpush_target (); |
abc56d60 | 6539 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6540 | } |
6541 | } | |
abc56d60 PA |
6542 | else |
6543 | { | |
6544 | if (query (_("Interrupted while waiting for the program.\n" | |
6545 | "Give up waiting? "))) | |
6546 | quit (); | |
6547 | } | |
c906108c SS |
6548 | } |
6549 | ||
6426a772 JM |
6550 | /* Enable/disable target terminal ownership. Most targets can use |
6551 | terminal groups to control terminal ownership. Remote targets are | |
6552 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6553 | is required. */ |
6426a772 | 6554 | |
f6ac5f3d PA |
6555 | void |
6556 | remote_target::terminal_inferior () | |
6426a772 | 6557 | { |
6426a772 JM |
6558 | /* NOTE: At this point we could also register our selves as the |
6559 | recipient of all input. Any characters typed could then be | |
23860348 | 6560 | passed on down to the target. */ |
6426a772 JM |
6561 | } |
6562 | ||
f6ac5f3d PA |
6563 | void |
6564 | remote_target::terminal_ours () | |
6426a772 | 6565 | { |
6426a772 JM |
6566 | } |
6567 | ||
176a6961 | 6568 | static void |
917317f4 | 6569 | remote_console_output (char *msg) |
c906108c SS |
6570 | { |
6571 | char *p; | |
6572 | ||
c5aa993b | 6573 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6574 | { |
6575 | char tb[2]; | |
6576 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6577 | |
c906108c SS |
6578 | tb[0] = c; |
6579 | tb[1] = 0; | |
43ff13b4 | 6580 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6581 | } |
00db5b94 PA |
6582 | gdb_flush (gdb_stdtarg); |
6583 | } | |
74531fed | 6584 | |
74531fed PA |
6585 | DEF_VEC_O(cached_reg_t); |
6586 | ||
722247f1 | 6587 | typedef struct stop_reply |
74531fed | 6588 | { |
722247f1 | 6589 | struct notif_event base; |
74531fed | 6590 | |
722247f1 | 6591 | /* The identifier of the thread about this event */ |
74531fed PA |
6592 | ptid_t ptid; |
6593 | ||
340e3c99 | 6594 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6595 | connection, represented by a remote_state object, is closed, |
6596 | all the associated stop_reply events should be released. */ | |
6597 | struct remote_state *rs; | |
6598 | ||
74531fed PA |
6599 | struct target_waitstatus ws; |
6600 | ||
5cd63fda PA |
6601 | /* The architecture associated with the expedited registers. */ |
6602 | gdbarch *arch; | |
6603 | ||
15148d6a PA |
6604 | /* Expedited registers. This makes remote debugging a bit more |
6605 | efficient for those targets that provide critical registers as | |
6606 | part of their normal status mechanism (as another roundtrip to | |
6607 | fetch them is avoided). */ | |
74531fed PA |
6608 | VEC(cached_reg_t) *regcache; |
6609 | ||
f7e6eed5 PA |
6610 | enum target_stop_reason stop_reason; |
6611 | ||
74531fed PA |
6612 | CORE_ADDR watch_data_address; |
6613 | ||
dc146f7c | 6614 | int core; |
722247f1 | 6615 | } *stop_reply_p; |
a744cf53 | 6616 | |
722247f1 YQ |
6617 | DECLARE_QUEUE_P (stop_reply_p); |
6618 | DEFINE_QUEUE_P (stop_reply_p); | |
6619 | /* The list of already fetched and acknowledged stop events. This | |
6620 | queue is used for notification Stop, and other notifications | |
6621 | don't need queue for their events, because the notification events | |
6622 | of Stop can't be consumed immediately, so that events should be | |
6623 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6624 | time. Other notifications can consume their events immediately, | |
6625 | so queue is not needed for them. */ | |
6626 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6627 | |
6628 | static void | |
6629 | stop_reply_xfree (struct stop_reply *r) | |
6630 | { | |
f48ff2a7 | 6631 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6632 | } |
6633 | ||
221e1a37 PA |
6634 | /* Return the length of the stop reply queue. */ |
6635 | ||
6636 | static int | |
6637 | stop_reply_queue_length (void) | |
6638 | { | |
6639 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6640 | } | |
6641 | ||
722247f1 YQ |
6642 | static void |
6643 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6644 | struct notif_event *event) | |
6645 | { | |
6646 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6647 | } | |
6648 | ||
6649 | static void | |
6650 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6651 | struct notif_event *event) | |
6652 | { | |
6653 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6654 | ||
6655 | /* acknowledge */ | |
f5c4fcd9 | 6656 | putpkt (self->ack_command); |
722247f1 YQ |
6657 | |
6658 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6659 | /* We got an unknown stop reply. */ | |
6660 | error (_("Unknown stop reply")); | |
6661 | ||
6662 | push_stop_reply (stop_reply); | |
6663 | } | |
6664 | ||
6665 | static int | |
6666 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6667 | { | |
6668 | /* We can't get pending events in remote_notif_process for | |
6669 | notification stop, and we have to do this in remote_wait_ns | |
6670 | instead. If we fetch all queued events from stub, remote stub | |
6671 | may exit and we have no chance to process them back in | |
6672 | remote_wait_ns. */ | |
6673 | mark_async_event_handler (remote_async_inferior_event_token); | |
6674 | return 0; | |
6675 | } | |
6676 | ||
6677 | static void | |
6678 | stop_reply_dtr (struct notif_event *event) | |
6679 | { | |
6680 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6681 | cached_reg_t *reg; |
6682 | int ix; | |
6683 | ||
6684 | for (ix = 0; | |
6685 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6686 | ix++) | |
6687 | xfree (reg->data); | |
722247f1 YQ |
6688 | |
6689 | VEC_free (cached_reg_t, r->regcache); | |
6690 | } | |
6691 | ||
6692 | static struct notif_event * | |
6693 | remote_notif_stop_alloc_reply (void) | |
6694 | { | |
8d749320 SM |
6695 | /* We cast to a pointer to the "base class". */ |
6696 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6697 | |
6698 | r->dtr = stop_reply_dtr; | |
6699 | ||
6700 | return r; | |
6701 | } | |
6702 | ||
6703 | /* A client of notification Stop. */ | |
6704 | ||
6705 | struct notif_client notif_client_stop = | |
6706 | { | |
6707 | "Stop", | |
6708 | "vStopped", | |
6709 | remote_notif_stop_parse, | |
6710 | remote_notif_stop_ack, | |
6711 | remote_notif_stop_can_get_pending_events, | |
6712 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6713 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6714 | }; |
6715 | ||
6716 | /* A parameter to pass data in and out. */ | |
6717 | ||
6718 | struct queue_iter_param | |
6719 | { | |
6720 | void *input; | |
6721 | struct stop_reply *output; | |
6722 | }; | |
6723 | ||
85ad3aaf | 6724 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6725 | the pid of the process that owns the threads we want to check, or |
6726 | -1 if we want to check all threads. */ | |
6727 | ||
6728 | static int | |
6729 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6730 | ptid_t thread_ptid) | |
6731 | { | |
6732 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6733 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6734 | { | |
6735 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6736 | return 1; | |
6737 | } | |
6738 | ||
6739 | return 0; | |
6740 | } | |
6741 | ||
85ad3aaf PA |
6742 | /* Return the thread's pending status used to determine whether the |
6743 | thread is a fork parent stopped at a fork event. */ | |
6744 | ||
6745 | static struct target_waitstatus * | |
6746 | thread_pending_fork_status (struct thread_info *thread) | |
6747 | { | |
6748 | if (thread->suspend.waitstatus_pending_p) | |
6749 | return &thread->suspend.waitstatus; | |
6750 | else | |
6751 | return &thread->pending_follow; | |
6752 | } | |
6753 | ||
6754 | /* Determine if THREAD is a pending fork parent thread. */ | |
6755 | ||
6756 | static int | |
6757 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6758 | { | |
6759 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6760 | int pid = -1; | |
6761 | ||
6762 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6763 | } | |
6764 | ||
cbb8991c DB |
6765 | /* Check whether EVENT is a fork event, and if it is, remove the |
6766 | fork child from the context list passed in DATA. */ | |
6767 | ||
6768 | static int | |
6769 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6770 | QUEUE_ITER (stop_reply_p) *iter, | |
6771 | stop_reply_p event, | |
6772 | void *data) | |
6773 | { | |
19ba03f4 SM |
6774 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6775 | struct threads_listing_context *context | |
6776 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6777 | |
6778 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6779 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6780 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
21fe1c75 | 6781 | context->remove_thread (event->ws.value.related_pid); |
cbb8991c DB |
6782 | |
6783 | return 1; | |
6784 | } | |
6785 | ||
6786 | /* If CONTEXT contains any fork child threads that have not been | |
6787 | reported yet, remove them from the CONTEXT list. If such a | |
6788 | thread exists it is because we are stopped at a fork catchpoint | |
6789 | and have not yet called follow_fork, which will set up the | |
6790 | host-side data structures for the new process. */ | |
6791 | ||
6792 | static void | |
6793 | remove_new_fork_children (struct threads_listing_context *context) | |
6794 | { | |
6795 | struct thread_info * thread; | |
6796 | int pid = -1; | |
6797 | struct notif_client *notif = ¬if_client_stop; | |
6798 | struct queue_iter_param param; | |
6799 | ||
6800 | /* For any threads stopped at a fork event, remove the corresponding | |
6801 | fork child threads from the CONTEXT list. */ | |
6802 | ALL_NON_EXITED_THREADS (thread) | |
6803 | { | |
85ad3aaf | 6804 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6805 | |
6806 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 6807 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
6808 | } |
6809 | ||
6810 | /* Check for any pending fork events (not reported or processed yet) | |
6811 | in process PID and remove those fork child threads from the | |
6812 | CONTEXT list as well. */ | |
6813 | remote_notif_get_pending_events (notif); | |
6814 | param.input = context; | |
6815 | param.output = NULL; | |
6816 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6817 | remove_child_of_pending_fork, ¶m); | |
6818 | } | |
6819 | ||
85ad3aaf PA |
6820 | /* Check whether EVENT would prevent a global or process wildcard |
6821 | vCont action. */ | |
6822 | ||
6823 | static int | |
6824 | check_pending_event_prevents_wildcard_vcont_callback | |
6825 | (QUEUE (stop_reply_p) *q, | |
6826 | QUEUE_ITER (stop_reply_p) *iter, | |
6827 | stop_reply_p event, | |
6828 | void *data) | |
6829 | { | |
6830 | struct inferior *inf; | |
6831 | int *may_global_wildcard_vcont = (int *) data; | |
6832 | ||
6833 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6834 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6835 | return 1; | |
6836 | ||
6837 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6838 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6839 | *may_global_wildcard_vcont = 0; | |
6840 | ||
6841 | inf = find_inferior_ptid (event->ptid); | |
6842 | ||
6843 | /* This may be the first time we heard about this process. | |
6844 | Regardless, we must not do a global wildcard resume, otherwise | |
6845 | we'd resume this process too. */ | |
6846 | *may_global_wildcard_vcont = 0; | |
6847 | if (inf != NULL) | |
089354bb | 6848 | get_remote_inferior (inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6849 | |
6850 | return 1; | |
6851 | } | |
6852 | ||
6853 | /* Check whether any event pending in the vStopped queue would prevent | |
6854 | a global or process wildcard vCont action. Clear | |
6855 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6856 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6857 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6858 | ||
6859 | static void | |
6860 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6861 | { | |
6862 | struct notif_client *notif = ¬if_client_stop; | |
6863 | ||
6864 | remote_notif_get_pending_events (notif); | |
6865 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6866 | check_pending_event_prevents_wildcard_vcont_callback, | |
6867 | may_global_wildcard); | |
6868 | } | |
6869 | ||
f48ff2a7 YQ |
6870 | /* Remove stop replies in the queue if its pid is equal to the given |
6871 | inferior's pid. */ | |
722247f1 YQ |
6872 | |
6873 | static int | |
f48ff2a7 YQ |
6874 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6875 | QUEUE_ITER (stop_reply_p) *iter, | |
6876 | stop_reply_p event, | |
6877 | void *data) | |
722247f1 | 6878 | { |
19ba03f4 SM |
6879 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6880 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6881 | |
f48ff2a7 | 6882 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6883 | { |
6884 | stop_reply_xfree (event); | |
6885 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6886 | } | |
6887 | ||
6888 | return 1; | |
6889 | } | |
6890 | ||
f48ff2a7 | 6891 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6892 | |
74531fed | 6893 | static void |
5f4cf0bb | 6894 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6895 | { |
722247f1 | 6896 | struct queue_iter_param param; |
f48ff2a7 YQ |
6897 | struct stop_reply *reply; |
6898 | struct remote_state *rs = get_remote_state (); | |
6899 | struct remote_notif_state *rns = rs->notif_state; | |
6900 | ||
6901 | /* This function can be notified when an inferior exists. When the | |
6902 | target is not remote, the notification state is NULL. */ | |
6903 | if (rs->remote_desc == NULL) | |
6904 | return; | |
6905 | ||
6906 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6907 | |
74531fed | 6908 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6909 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6910 | { |
722247f1 | 6911 | stop_reply_xfree (reply); |
f48ff2a7 | 6912 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6913 | } |
c906108c | 6914 | |
722247f1 YQ |
6915 | param.input = inf; |
6916 | param.output = NULL; | |
74531fed PA |
6917 | /* Discard the stop replies we have already pulled with |
6918 | vStopped. */ | |
722247f1 | 6919 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6920 | remove_stop_reply_for_inferior, ¶m); |
6921 | } | |
6922 | ||
bcc75809 YQ |
6923 | /* If its remote state is equal to the given remote state, |
6924 | remove EVENT from the stop reply queue. */ | |
6925 | ||
6926 | static int | |
6927 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6928 | QUEUE_ITER (stop_reply_p) *iter, | |
6929 | stop_reply_p event, | |
6930 | void *data) | |
6931 | { | |
19ba03f4 SM |
6932 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6933 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6934 | |
6935 | if (event->rs == rs) | |
6936 | { | |
6937 | stop_reply_xfree (event); | |
6938 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6939 | } | |
6940 | ||
6941 | return 1; | |
6942 | } | |
6943 | ||
6944 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6945 | |
6946 | static void | |
bcc75809 | 6947 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6948 | { |
6949 | struct queue_iter_param param; | |
6950 | ||
bcc75809 | 6951 | param.input = rs; |
f48ff2a7 YQ |
6952 | param.output = NULL; |
6953 | /* Discard the stop replies we have already pulled with | |
6954 | vStopped. */ | |
6955 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6956 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6957 | } |
74531fed | 6958 | |
722247f1 YQ |
6959 | /* A parameter to pass data in and out. */ |
6960 | ||
6961 | static int | |
6962 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6963 | QUEUE_ITER (stop_reply_p) *iter, | |
6964 | stop_reply_p event, | |
6965 | void *data) | |
6966 | { | |
19ba03f4 SM |
6967 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6968 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6969 | |
6970 | if (ptid_match (event->ptid, *ptid)) | |
6971 | { | |
6972 | param->output = event; | |
6973 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6974 | return 0; | |
c8e38a49 | 6975 | } |
722247f1 YQ |
6976 | |
6977 | return 1; | |
74531fed | 6978 | } |
43ff13b4 | 6979 | |
722247f1 YQ |
6980 | /* Remove the first reply in 'stop_reply_queue' which matches |
6981 | PTID. */ | |
2e9f7625 | 6982 | |
722247f1 YQ |
6983 | static struct stop_reply * |
6984 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6985 | { |
722247f1 YQ |
6986 | struct queue_iter_param param; |
6987 | ||
6988 | param.input = &ptid; | |
6989 | param.output = NULL; | |
6990 | ||
6991 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6992 | remote_notif_remove_once_on_match, ¶m); | |
6993 | if (notif_debug) | |
6994 | fprintf_unfiltered (gdb_stdlog, | |
6995 | "notif: discard queued event: 'Stop' in %s\n", | |
6996 | target_pid_to_str (ptid)); | |
a744cf53 | 6997 | |
722247f1 | 6998 | return param.output; |
74531fed | 6999 | } |
75c99385 | 7000 | |
74531fed PA |
7001 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7002 | remove it from the queue, and return it. Returns NULL if none is | |
7003 | found. If there are still queued events left to process, tell the | |
7004 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7005 | |
74531fed PA |
7006 | static struct stop_reply * |
7007 | queued_stop_reply (ptid_t ptid) | |
7008 | { | |
722247f1 | 7009 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7010 | |
722247f1 | 7011 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
7012 | /* There's still at least an event left. */ |
7013 | mark_async_event_handler (remote_async_inferior_event_token); | |
7014 | ||
722247f1 | 7015 | return r; |
74531fed PA |
7016 | } |
7017 | ||
7018 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7019 | know that we now have at least one queued event left to pass to the | |
7020 | core side, tell the event loop to get back to target_wait soon. */ | |
7021 | ||
7022 | static void | |
7023 | push_stop_reply (struct stop_reply *new_event) | |
7024 | { | |
722247f1 | 7025 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 7026 | |
722247f1 YQ |
7027 | if (notif_debug) |
7028 | fprintf_unfiltered (gdb_stdlog, | |
7029 | "notif: push 'Stop' %s to queue %d\n", | |
7030 | target_pid_to_str (new_event->ptid), | |
7031 | QUEUE_length (stop_reply_p, | |
7032 | stop_reply_queue)); | |
74531fed PA |
7033 | |
7034 | mark_async_event_handler (remote_async_inferior_event_token); | |
7035 | } | |
7036 | ||
722247f1 YQ |
7037 | static int |
7038 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
7039 | QUEUE_ITER (stop_reply_p) *iter, | |
7040 | struct stop_reply *event, | |
7041 | void *data) | |
7042 | { | |
19ba03f4 | 7043 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
7044 | |
7045 | return !(ptid_equal (*ptid, event->ptid) | |
7046 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
7047 | } | |
7048 | ||
74531fed PA |
7049 | /* Returns true if we have a stop reply for PTID. */ |
7050 | ||
7051 | static int | |
7052 | peek_stop_reply (ptid_t ptid) | |
7053 | { | |
722247f1 YQ |
7054 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
7055 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
7056 | } |
7057 | ||
26d56a93 SL |
7058 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7059 | starting with P and ending with PEND matches PREFIX. */ | |
7060 | ||
7061 | static int | |
7062 | strprefix (const char *p, const char *pend, const char *prefix) | |
7063 | { | |
7064 | for ( ; p < pend; p++, prefix++) | |
7065 | if (*p != *prefix) | |
7066 | return 0; | |
7067 | return *prefix == '\0'; | |
7068 | } | |
7069 | ||
74531fed PA |
7070 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7071 | result is stored in EVENT, or throws an error. */ | |
7072 | ||
7073 | static void | |
7074 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
7075 | { | |
5cd63fda | 7076 | remote_arch_state *rsa = NULL; |
74531fed | 7077 | ULONGEST addr; |
256642e8 | 7078 | const char *p; |
94585166 | 7079 | int skipregs = 0; |
74531fed PA |
7080 | |
7081 | event->ptid = null_ptid; | |
bcc75809 | 7082 | event->rs = get_remote_state (); |
74531fed PA |
7083 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7084 | event->ws.value.integer = 0; | |
f7e6eed5 | 7085 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 7086 | event->regcache = NULL; |
dc146f7c | 7087 | event->core = -1; |
74531fed PA |
7088 | |
7089 | switch (buf[0]) | |
7090 | { | |
7091 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7092 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7093 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7094 | ss = signal number | |
7095 | n... = register number | |
7096 | r... = register contents | |
7097 | */ | |
7098 | ||
7099 | p = &buf[3]; /* after Txx */ | |
7100 | while (*p) | |
7101 | { | |
256642e8 | 7102 | const char *p1; |
cea39f65 | 7103 | int fieldsize; |
43ff13b4 | 7104 | |
1f10ba14 PA |
7105 | p1 = strchr (p, ':'); |
7106 | if (p1 == NULL) | |
7107 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7108 | Packet: '%s'\n"), | |
7109 | p, buf); | |
7110 | if (p == p1) | |
7111 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7112 | Packet: '%s'\n"), | |
7113 | p, buf); | |
3c3bea1c | 7114 | |
1f10ba14 PA |
7115 | /* Some "registers" are actually extended stop information. |
7116 | Note if you're adding a new entry here: GDB 7.9 and | |
7117 | earlier assume that all register "numbers" that start | |
7118 | with an hex digit are real register numbers. Make sure | |
7119 | the server only sends such a packet if it knows the | |
7120 | client understands it. */ | |
c8e38a49 | 7121 | |
26d56a93 | 7122 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7123 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7124 | else if (strprefix (p, p1, "syscall_entry")) |
7125 | { | |
7126 | ULONGEST sysno; | |
7127 | ||
7128 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7129 | p = unpack_varlen_hex (++p1, &sysno); | |
7130 | event->ws.value.syscall_number = (int) sysno; | |
7131 | } | |
7132 | else if (strprefix (p, p1, "syscall_return")) | |
7133 | { | |
7134 | ULONGEST sysno; | |
7135 | ||
7136 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7137 | p = unpack_varlen_hex (++p1, &sysno); | |
7138 | event->ws.value.syscall_number = (int) sysno; | |
7139 | } | |
26d56a93 SL |
7140 | else if (strprefix (p, p1, "watch") |
7141 | || strprefix (p, p1, "rwatch") | |
7142 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7143 | { |
f7e6eed5 | 7144 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7145 | p = unpack_varlen_hex (++p1, &addr); |
7146 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7147 | } |
26d56a93 | 7148 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7149 | { |
7150 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7151 | ||
7152 | /* Make sure the stub doesn't forget to indicate support | |
7153 | with qSupported. */ | |
7154 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7155 | error (_("Unexpected swbreak stop reason")); | |
7156 | ||
7157 | /* The value part is documented as "must be empty", | |
7158 | though we ignore it, in case we ever decide to make | |
7159 | use of it in a backward compatible way. */ | |
8424cc97 | 7160 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7161 | } |
26d56a93 | 7162 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7163 | { |
7164 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7165 | ||
7166 | /* Make sure the stub doesn't forget to indicate support | |
7167 | with qSupported. */ | |
7168 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7169 | error (_("Unexpected hwbreak stop reason")); | |
7170 | ||
7171 | /* See above. */ | |
8424cc97 | 7172 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7173 | } |
26d56a93 | 7174 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7175 | { |
1f10ba14 | 7176 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7177 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7178 | } |
26d56a93 | 7179 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7180 | { |
7181 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7182 | /* p1 will indicate "begin" or "end", but it makes | |
7183 | no difference for now, so ignore it. */ | |
8424cc97 | 7184 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7185 | } |
26d56a93 | 7186 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7187 | { |
7188 | ULONGEST c; | |
a744cf53 | 7189 | |
1f10ba14 PA |
7190 | p = unpack_varlen_hex (++p1, &c); |
7191 | event->core = c; | |
cea39f65 | 7192 | } |
26d56a93 | 7193 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7194 | { |
7195 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7196 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7197 | } | |
26d56a93 | 7198 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7199 | { |
7200 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7201 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7202 | } | |
26d56a93 | 7203 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7204 | { |
7205 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7206 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7207 | } |
6ab24463 | 7208 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7209 | { |
7210 | ULONGEST ignored; | |
7211 | char pathname[PATH_MAX]; | |
7212 | int pathlen; | |
7213 | ||
7214 | /* Determine the length of the execd pathname. */ | |
7215 | p = unpack_varlen_hex (++p1, &ignored); | |
7216 | pathlen = (p - p1) / 2; | |
7217 | ||
7218 | /* Save the pathname for event reporting and for | |
7219 | the next run command. */ | |
7220 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
7221 | pathname[pathlen] = '\0'; | |
7222 | ||
7223 | /* This is freed during event handling. */ | |
7224 | event->ws.value.execd_pathname = xstrdup (pathname); | |
7225 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
7226 | ||
7227 | /* Skip the registers included in this packet, since | |
7228 | they may be for an architecture different from the | |
7229 | one used by the original program. */ | |
7230 | skipregs = 1; | |
7231 | } | |
65706a29 PA |
7232 | else if (strprefix (p, p1, "create")) |
7233 | { | |
7234 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7235 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7236 | } |
cea39f65 MS |
7237 | else |
7238 | { | |
1f10ba14 | 7239 | ULONGEST pnum; |
256642e8 | 7240 | const char *p_temp; |
1f10ba14 | 7241 | |
94585166 DB |
7242 | if (skipregs) |
7243 | { | |
8424cc97 | 7244 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7245 | p++; |
7246 | continue; | |
7247 | } | |
7248 | ||
1f10ba14 PA |
7249 | /* Maybe a real ``P'' register number. */ |
7250 | p_temp = unpack_varlen_hex (p, &pnum); | |
7251 | /* If the first invalid character is the colon, we got a | |
7252 | register number. Otherwise, it's an unknown stop | |
7253 | reason. */ | |
7254 | if (p_temp == p1) | |
7255 | { | |
5cd63fda PA |
7256 | /* If we haven't parsed the event's thread yet, find |
7257 | it now, in order to find the architecture of the | |
7258 | reported expedited registers. */ | |
7259 | if (event->ptid == null_ptid) | |
7260 | { | |
7261 | const char *thr = strstr (p1 + 1, ";thread:"); | |
7262 | if (thr != NULL) | |
7263 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7264 | NULL); | |
7265 | else | |
3cada740 PA |
7266 | { |
7267 | /* Either the current thread hasn't changed, | |
7268 | or the inferior is not multi-threaded. | |
7269 | The event must be for the thread we last | |
7270 | set as (or learned as being) current. */ | |
7271 | event->ptid = event->rs->general_thread; | |
7272 | } | |
5cd63fda PA |
7273 | } |
7274 | ||
7275 | if (rsa == NULL) | |
7276 | { | |
7277 | inferior *inf = (event->ptid == null_ptid | |
7278 | ? NULL | |
7279 | : find_inferior_ptid (event->ptid)); | |
7280 | /* If this is the first time we learn anything | |
7281 | about this process, skip the registers | |
7282 | included in this packet, since we don't yet | |
7283 | know which architecture to use to parse them. | |
7284 | We'll determine the architecture later when | |
7285 | we process the stop reply and retrieve the | |
7286 | target description, via | |
7287 | remote_notice_new_inferior -> | |
7288 | post_create_inferior. */ | |
7289 | if (inf == NULL) | |
7290 | { | |
7291 | p = strchrnul (p1 + 1, ';'); | |
7292 | p++; | |
7293 | continue; | |
7294 | } | |
7295 | ||
7296 | event->arch = inf->gdbarch; | |
9d6eea31 | 7297 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7298 | } |
7299 | ||
7300 | packet_reg *reg | |
7301 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7302 | cached_reg_t cached_reg; |
43ff13b4 | 7303 | |
1f10ba14 PA |
7304 | if (reg == NULL) |
7305 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7306 | Packet: '%s'\n"), |
1f10ba14 | 7307 | hex_string (pnum), p, buf); |
c8e38a49 | 7308 | |
1f10ba14 | 7309 | cached_reg.num = reg->regnum; |
d1dff226 | 7310 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7311 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7312 | |
1f10ba14 PA |
7313 | p = p1 + 1; |
7314 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7315 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7316 | p += 2 * fieldsize; |
5cd63fda | 7317 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7318 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7319 | |
1f10ba14 PA |
7320 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
7321 | } | |
7322 | else | |
7323 | { | |
7324 | /* Not a number. Silently skip unknown optional | |
7325 | info. */ | |
8424cc97 | 7326 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7327 | } |
cea39f65 | 7328 | } |
c8e38a49 | 7329 | |
cea39f65 MS |
7330 | if (*p != ';') |
7331 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7332 | buf, p); | |
7333 | ++p; | |
7334 | } | |
5b5596ff PA |
7335 | |
7336 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7337 | break; | |
7338 | ||
c8e38a49 PA |
7339 | /* fall through */ |
7340 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7341 | { |
7342 | int sig; | |
7343 | ||
7344 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7345 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7346 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7347 | event->ws.value.sig = (enum gdb_signal) sig; | |
7348 | else | |
7349 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7350 | } | |
c8e38a49 | 7351 | break; |
65706a29 PA |
7352 | case 'w': /* Thread exited. */ |
7353 | { | |
256642e8 | 7354 | const char *p; |
65706a29 PA |
7355 | ULONGEST value; |
7356 | ||
7357 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7358 | p = unpack_varlen_hex (&buf[1], &value); | |
7359 | event->ws.value.integer = value; | |
7360 | if (*p != ';') | |
7361 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7362 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7363 | break; |
7364 | } | |
c8e38a49 PA |
7365 | case 'W': /* Target exited. */ |
7366 | case 'X': | |
7367 | { | |
256642e8 | 7368 | const char *p; |
c8e38a49 PA |
7369 | int pid; |
7370 | ULONGEST value; | |
82f73884 | 7371 | |
c8e38a49 PA |
7372 | /* GDB used to accept only 2 hex chars here. Stubs should |
7373 | only send more if they detect GDB supports multi-process | |
7374 | support. */ | |
7375 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7376 | |
c8e38a49 PA |
7377 | if (buf[0] == 'W') |
7378 | { | |
7379 | /* The remote process exited. */ | |
74531fed PA |
7380 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7381 | event->ws.value.integer = value; | |
c8e38a49 PA |
7382 | } |
7383 | else | |
7384 | { | |
7385 | /* The remote process exited with a signal. */ | |
74531fed | 7386 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7387 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7388 | event->ws.value.sig = (enum gdb_signal) value; | |
7389 | else | |
7390 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7391 | } |
82f73884 | 7392 | |
c8e38a49 PA |
7393 | /* If no process is specified, assume inferior_ptid. */ |
7394 | pid = ptid_get_pid (inferior_ptid); | |
7395 | if (*p == '\0') | |
7396 | ; | |
7397 | else if (*p == ';') | |
7398 | { | |
7399 | p++; | |
7400 | ||
0b24eb2d | 7401 | if (*p == '\0') |
82f73884 | 7402 | ; |
61012eef | 7403 | else if (startswith (p, "process:")) |
82f73884 | 7404 | { |
c8e38a49 | 7405 | ULONGEST upid; |
a744cf53 | 7406 | |
c8e38a49 PA |
7407 | p += sizeof ("process:") - 1; |
7408 | unpack_varlen_hex (p, &upid); | |
7409 | pid = upid; | |
82f73884 PA |
7410 | } |
7411 | else | |
7412 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7413 | } |
c8e38a49 PA |
7414 | else |
7415 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7416 | event->ptid = pid_to_ptid (pid); |
7417 | } | |
7418 | break; | |
f2faf941 PA |
7419 | case 'N': |
7420 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7421 | event->ptid = minus_one_ptid; | |
7422 | break; | |
74531fed PA |
7423 | } |
7424 | ||
6efcd9a8 | 7425 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7426 | error (_("No process or thread specified in stop reply: %s"), buf); |
7427 | } | |
7428 | ||
722247f1 YQ |
7429 | /* When the stub wants to tell GDB about a new notification reply, it |
7430 | sends a notification (%Stop, for example). Those can come it at | |
7431 | any time, hence, we have to make sure that any pending | |
7432 | putpkt/getpkt sequence we're making is finished, before querying | |
7433 | the stub for more events with the corresponding ack command | |
7434 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7435 | immediately upon receiving the notification, something like this | |
7436 | could happen: | |
74531fed PA |
7437 | |
7438 | 1.1) --> Hg 1 | |
7439 | 1.2) <-- OK | |
7440 | 1.3) --> g | |
7441 | 1.4) <-- %Stop | |
7442 | 1.5) --> vStopped | |
7443 | 1.6) <-- (registers reply to step #1.3) | |
7444 | ||
7445 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7446 | query. | |
7447 | ||
796cb314 | 7448 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7449 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7450 | doing whatever we were doing: | |
7451 | ||
7452 | 2.1) --> Hg 1 | |
7453 | 2.2) <-- OK | |
7454 | 2.3) --> g | |
7455 | 2.4) <-- %Stop | |
7456 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7457 | 2.5) <-- (registers reply to step #2.3) | |
7458 | ||
7459 | Eventualy after step #2.5, we return to the event loop, which | |
7460 | notices there's an event on the | |
7461 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7462 | associated callback --- the function below. At this point, we're | |
7463 | always safe to start a vStopped sequence. : | |
7464 | ||
7465 | 2.6) --> vStopped | |
7466 | 2.7) <-- T05 thread:2 | |
7467 | 2.8) --> vStopped | |
7468 | 2.9) --> OK | |
7469 | */ | |
7470 | ||
722247f1 YQ |
7471 | void |
7472 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7473 | { |
7474 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7475 | |
f48ff2a7 | 7476 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7477 | { |
722247f1 YQ |
7478 | if (notif_debug) |
7479 | fprintf_unfiltered (gdb_stdlog, | |
7480 | "notif: process: '%s' ack pending event\n", | |
7481 | nc->name); | |
74531fed | 7482 | |
722247f1 | 7483 | /* acknowledge */ |
f48ff2a7 YQ |
7484 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7485 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7486 | |
7487 | while (1) | |
7488 | { | |
7489 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7490 | if (strcmp (rs->buf, "OK") == 0) | |
7491 | break; | |
7492 | else | |
722247f1 | 7493 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7494 | } |
7495 | } | |
722247f1 YQ |
7496 | else |
7497 | { | |
7498 | if (notif_debug) | |
7499 | fprintf_unfiltered (gdb_stdlog, | |
7500 | "notif: process: '%s' no pending reply\n", | |
7501 | nc->name); | |
7502 | } | |
74531fed PA |
7503 | } |
7504 | ||
74531fed PA |
7505 | /* Called when it is decided that STOP_REPLY holds the info of the |
7506 | event that is to be returned to the core. This function always | |
7507 | destroys STOP_REPLY. */ | |
7508 | ||
7509 | static ptid_t | |
7510 | process_stop_reply (struct stop_reply *stop_reply, | |
7511 | struct target_waitstatus *status) | |
7512 | { | |
7513 | ptid_t ptid; | |
7514 | ||
7515 | *status = stop_reply->ws; | |
7516 | ptid = stop_reply->ptid; | |
7517 | ||
7518 | /* If no thread/process was reported by the stub, assume the current | |
7519 | inferior. */ | |
7520 | if (ptid_equal (ptid, null_ptid)) | |
7521 | ptid = inferior_ptid; | |
7522 | ||
5f3563ea | 7523 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7524 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7525 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7526 | { |
5f3563ea PA |
7527 | /* Expedited registers. */ |
7528 | if (stop_reply->regcache) | |
7529 | { | |
217f1f79 | 7530 | struct regcache *regcache |
5cd63fda | 7531 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea PA |
7532 | cached_reg_t *reg; |
7533 | int ix; | |
7534 | ||
7535 | for (ix = 0; | |
d1dff226 | 7536 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7537 | ix++) |
d1dff226 | 7538 | { |
217f1f79 | 7539 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7540 | xfree (reg->data); |
7541 | } | |
7542 | ||
5f3563ea PA |
7543 | VEC_free (cached_reg_t, stop_reply->regcache); |
7544 | } | |
74531fed | 7545 | |
1941c569 | 7546 | remote_notice_new_inferior (ptid, 0); |
7aabaf9d | 7547 | remote_thread_info *remote_thr = get_remote_thread_info (ptid); |
799a2abe PA |
7548 | remote_thr->core = stop_reply->core; |
7549 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7550 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7551 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7552 | } |
7553 | ||
74531fed PA |
7554 | stop_reply_xfree (stop_reply); |
7555 | return ptid; | |
7556 | } | |
7557 | ||
7558 | /* The non-stop mode version of target_wait. */ | |
7559 | ||
7560 | static ptid_t | |
47608cb1 | 7561 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7562 | { |
7563 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7564 | struct stop_reply *stop_reply; |
7565 | int ret; | |
fee9eda9 | 7566 | int is_notif = 0; |
74531fed PA |
7567 | |
7568 | /* If in non-stop mode, get out of getpkt even if a | |
7569 | notification is received. */ | |
7570 | ||
7571 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7572 | 0 /* forever */, &is_notif); |
74531fed PA |
7573 | while (1) |
7574 | { | |
fee9eda9 | 7575 | if (ret != -1 && !is_notif) |
74531fed PA |
7576 | switch (rs->buf[0]) |
7577 | { | |
7578 | case 'E': /* Error of some sort. */ | |
7579 | /* We're out of sync with the target now. Did it continue | |
7580 | or not? We can't tell which thread it was in non-stop, | |
7581 | so just ignore this. */ | |
7582 | warning (_("Remote failure reply: %s"), rs->buf); | |
7583 | break; | |
7584 | case 'O': /* Console output. */ | |
7585 | remote_console_output (rs->buf + 1); | |
7586 | break; | |
7587 | default: | |
7588 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7589 | break; | |
7590 | } | |
7591 | ||
7592 | /* Acknowledge a pending stop reply that may have arrived in the | |
7593 | mean time. */ | |
f48ff2a7 | 7594 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7595 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7596 | |
7597 | /* If indeed we noticed a stop reply, we're done. */ | |
7598 | stop_reply = queued_stop_reply (ptid); | |
7599 | if (stop_reply != NULL) | |
7600 | return process_stop_reply (stop_reply, status); | |
7601 | ||
47608cb1 | 7602 | /* Still no event. If we're just polling for an event, then |
74531fed | 7603 | return to the event loop. */ |
47608cb1 | 7604 | if (options & TARGET_WNOHANG) |
74531fed PA |
7605 | { |
7606 | status->kind = TARGET_WAITKIND_IGNORE; | |
7607 | return minus_one_ptid; | |
7608 | } | |
7609 | ||
47608cb1 | 7610 | /* Otherwise do a blocking wait. */ |
74531fed | 7611 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7612 | 1 /* forever */, &is_notif); |
74531fed PA |
7613 | } |
7614 | } | |
7615 | ||
7616 | /* Wait until the remote machine stops, then return, storing status in | |
7617 | STATUS just as `wait' would. */ | |
7618 | ||
7619 | static ptid_t | |
47608cb1 | 7620 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7621 | { |
7622 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7623 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7624 | char *buf; |
74531fed PA |
7625 | struct stop_reply *stop_reply; |
7626 | ||
47608cb1 PA |
7627 | again: |
7628 | ||
74531fed PA |
7629 | status->kind = TARGET_WAITKIND_IGNORE; |
7630 | status->value.integer = 0; | |
7631 | ||
7632 | stop_reply = queued_stop_reply (ptid); | |
7633 | if (stop_reply != NULL) | |
7634 | return process_stop_reply (stop_reply, status); | |
7635 | ||
7636 | if (rs->cached_wait_status) | |
7637 | /* Use the cached wait status, but only once. */ | |
7638 | rs->cached_wait_status = 0; | |
7639 | else | |
7640 | { | |
7641 | int ret; | |
722247f1 | 7642 | int is_notif; |
567420d1 PA |
7643 | int forever = ((options & TARGET_WNOHANG) == 0 |
7644 | && wait_forever_enabled_p); | |
7645 | ||
7646 | if (!rs->waiting_for_stop_reply) | |
7647 | { | |
7648 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7649 | return minus_one_ptid; | |
7650 | } | |
74531fed | 7651 | |
74531fed PA |
7652 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7653 | _never_ wait for ever -> test on target_is_async_p(). | |
7654 | However, before we do that we need to ensure that the caller | |
7655 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7656 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7657 | forever, &is_notif); |
722247f1 YQ |
7658 | |
7659 | /* GDB gets a notification. Return to core as this event is | |
7660 | not interesting. */ | |
7661 | if (ret != -1 && is_notif) | |
7662 | return minus_one_ptid; | |
567420d1 PA |
7663 | |
7664 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7665 | return minus_one_ptid; | |
74531fed PA |
7666 | } |
7667 | ||
7668 | buf = rs->buf; | |
7669 | ||
3a29589a DJ |
7670 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7671 | an 'F' or 'O' packet. */ | |
7672 | if (buf[0] != 'F' && buf[0] != 'O') | |
7673 | rs->ctrlc_pending_p = 0; | |
7674 | ||
74531fed PA |
7675 | switch (buf[0]) |
7676 | { | |
7677 | case 'E': /* Error of some sort. */ | |
7678 | /* We're out of sync with the target now. Did it continue or | |
7679 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7680 | rs->waiting_for_stop_reply = 0; |
7681 | ||
74531fed PA |
7682 | warning (_("Remote failure reply: %s"), buf); |
7683 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7684 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7685 | break; |
7686 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7687 | /* GDB may access the inferior memory while handling the File-I/O |
7688 | request, but we don't want GDB accessing memory while waiting | |
7689 | for a stop reply. See the comments in putpkt_binary. Set | |
7690 | waiting_for_stop_reply to 0 temporarily. */ | |
7691 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7692 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7693 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7694 | /* GDB handled the File-I/O request, and the target is running |
7695 | again. Keep waiting for events. */ | |
7696 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7697 | break; |
f2faf941 | 7698 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7699 | { |
29090fb6 LM |
7700 | struct stop_reply *stop_reply; |
7701 | ||
7702 | /* There is a stop reply to handle. */ | |
7703 | rs->waiting_for_stop_reply = 0; | |
7704 | ||
7705 | stop_reply | |
722247f1 YQ |
7706 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7707 | rs->buf); | |
74531fed | 7708 | |
74531fed | 7709 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7710 | break; |
7711 | } | |
7712 | case 'O': /* Console output. */ | |
7713 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7714 | break; |
7715 | case '\0': | |
b73be471 | 7716 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7717 | { |
7718 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7719 | remote system doesn't support it. */ | |
223ffa71 | 7720 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7721 | printf_filtered |
7722 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7723 | gdb_signal_to_name (rs->last_sent_signal)); |
7724 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7725 | target_terminal::inferior (); |
c8e38a49 | 7726 | |
f5c4fcd9 TT |
7727 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7728 | putpkt (buf); | |
c8e38a49 | 7729 | break; |
43ff13b4 | 7730 | } |
86a73007 | 7731 | /* fallthrough */ |
c8e38a49 PA |
7732 | default: |
7733 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7734 | break; |
43ff13b4 | 7735 | } |
c8e38a49 | 7736 | |
f2faf941 PA |
7737 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7738 | return minus_one_ptid; | |
7739 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7740 | { |
7741 | /* Nothing interesting happened. If we're doing a non-blocking | |
7742 | poll, we're done. Otherwise, go back to waiting. */ | |
7743 | if (options & TARGET_WNOHANG) | |
7744 | return minus_one_ptid; | |
7745 | else | |
7746 | goto again; | |
7747 | } | |
74531fed PA |
7748 | else if (status->kind != TARGET_WAITKIND_EXITED |
7749 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7750 | { |
7751 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7752 | record_currthread (rs, event_ptid); |
82f73884 PA |
7753 | else |
7754 | event_ptid = inferior_ptid; | |
43ff13b4 | 7755 | } |
74531fed PA |
7756 | else |
7757 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7758 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7759 | |
82f73884 | 7760 | return event_ptid; |
43ff13b4 JM |
7761 | } |
7762 | ||
74531fed PA |
7763 | /* Wait until the remote machine stops, then return, storing status in |
7764 | STATUS just as `wait' would. */ | |
7765 | ||
f6ac5f3d PA |
7766 | ptid_t |
7767 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, int options) | |
c8e38a49 PA |
7768 | { |
7769 | ptid_t event_ptid; | |
7770 | ||
6efcd9a8 | 7771 | if (target_is_non_stop_p ()) |
47608cb1 | 7772 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7773 | else |
47608cb1 | 7774 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7775 | |
d9d41e78 | 7776 | if (target_is_async_p ()) |
c8e38a49 | 7777 | { |
74531fed PA |
7778 | /* If there are are events left in the queue tell the event loop |
7779 | to return here. */ | |
722247f1 | 7780 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7781 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7782 | } |
c8e38a49 PA |
7783 | |
7784 | return event_ptid; | |
7785 | } | |
7786 | ||
74ca34ce | 7787 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7788 | |
b96ec7ac | 7789 | static int |
56be3814 | 7790 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7791 | { |
ac7936df | 7792 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7793 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7794 | char *buf, *p; |
9890e433 | 7795 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7796 | int i; |
7797 | ||
4082afcc | 7798 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7799 | return 0; |
7800 | ||
7801 | if (reg->pnum == -1) | |
7802 | return 0; | |
7803 | ||
2e9f7625 | 7804 | p = rs->buf; |
fcad0fa4 | 7805 | *p++ = 'p'; |
74ca34ce | 7806 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7807 | *p++ = '\0'; |
1f4437a4 MS |
7808 | putpkt (rs->buf); |
7809 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7810 | |
2e9f7625 DJ |
7811 | buf = rs->buf; |
7812 | ||
74ca34ce DJ |
7813 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7814 | { | |
7815 | case PACKET_OK: | |
7816 | break; | |
7817 | case PACKET_UNKNOWN: | |
7818 | return 0; | |
7819 | case PACKET_ERROR: | |
27a9c0bf | 7820 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7821 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7822 | reg->regnum), |
7823 | buf); | |
74ca34ce | 7824 | } |
3f9a994c JB |
7825 | |
7826 | /* If this register is unfetchable, tell the regcache. */ | |
7827 | if (buf[0] == 'x') | |
8480adf2 | 7828 | { |
56be3814 | 7829 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7830 | return 1; |
b96ec7ac | 7831 | } |
b96ec7ac | 7832 | |
3f9a994c JB |
7833 | /* Otherwise, parse and supply the value. */ |
7834 | p = buf; | |
7835 | i = 0; | |
7836 | while (p[0] != 0) | |
7837 | { | |
7838 | if (p[1] == 0) | |
74ca34ce | 7839 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7840 | |
7841 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7842 | p += 2; | |
7843 | } | |
56be3814 | 7844 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7845 | return 1; |
b96ec7ac AC |
7846 | } |
7847 | ||
74ca34ce DJ |
7848 | /* Fetch the registers included in the target's 'g' packet. */ |
7849 | ||
29709017 DJ |
7850 | static int |
7851 | send_g_packet (void) | |
c906108c | 7852 | { |
d01949b6 | 7853 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7854 | int buf_len; |
c906108c | 7855 | |
bba74b36 | 7856 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
b75abf5b AK |
7857 | putpkt (rs->buf); |
7858 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7859 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
7860 | error (_("Could not read registers; remote failure reply '%s'"), | |
7861 | rs->buf); | |
c906108c | 7862 | |
29709017 DJ |
7863 | /* We can get out of synch in various cases. If the first character |
7864 | in the buffer is not a hex character, assume that has happened | |
7865 | and try to fetch another packet to read. */ | |
7866 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7867 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7868 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7869 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7870 | { | |
7871 | if (remote_debug) | |
7872 | fprintf_unfiltered (gdb_stdlog, | |
7873 | "Bad register packet; fetching a new packet\n"); | |
7874 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7875 | } | |
7876 | ||
74ca34ce DJ |
7877 | buf_len = strlen (rs->buf); |
7878 | ||
7879 | /* Sanity check the received packet. */ | |
7880 | if (buf_len % 2 != 0) | |
7881 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7882 | |
7883 | return buf_len / 2; | |
7884 | } | |
7885 | ||
7886 | static void | |
56be3814 | 7887 | process_g_packet (struct regcache *regcache) |
29709017 | 7888 | { |
ac7936df | 7889 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 7890 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 7891 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
7892 | int i, buf_len; |
7893 | char *p; | |
7894 | char *regs; | |
7895 | ||
7896 | buf_len = strlen (rs->buf); | |
7897 | ||
7898 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 7899 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 SM |
7900 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
7901 | "bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf); | |
74ca34ce DJ |
7902 | |
7903 | /* Save the size of the packet sent to us by the target. It is used | |
7904 | as a heuristic when determining the max size of packets that the | |
7905 | target can safely receive. */ | |
7906 | if (rsa->actual_register_packet_size == 0) | |
7907 | rsa->actual_register_packet_size = buf_len; | |
7908 | ||
7909 | /* If this is smaller than we guessed the 'g' packet would be, | |
7910 | update our records. A 'g' reply that doesn't include a register's | |
7911 | value implies either that the register is not available, or that | |
7912 | the 'p' packet must be used. */ | |
7913 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7914 | { |
9dc193c3 | 7915 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7916 | |
4a22f64d | 7917 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7918 | { |
9dc193c3 LF |
7919 | long offset = rsa->regs[i].offset; |
7920 | long reg_size = register_size (gdbarch, i); | |
7921 | ||
74ca34ce DJ |
7922 | if (rsa->regs[i].pnum == -1) |
7923 | continue; | |
7924 | ||
9dc193c3 | 7925 | if (offset >= sizeof_g_packet) |
74ca34ce | 7926 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7927 | else if (offset + reg_size > sizeof_g_packet) |
7928 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7929 | else |
74ca34ce | 7930 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7931 | } |
9dc193c3 LF |
7932 | |
7933 | /* Looks valid enough, we can assume this is the correct length | |
7934 | for a 'g' packet. It's important not to adjust | |
7935 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7936 | this "if" won't be run the next time the method is called | |
7937 | with a packet of the same size and one of the internal errors | |
7938 | below will trigger instead. */ | |
7939 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7940 | } |
b323314b | 7941 | |
224c3ddb | 7942 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7943 | |
7944 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7945 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7946 | |
c906108c SS |
7947 | /* Reply describes registers byte by byte, each byte encoded as two |
7948 | hex characters. Suck them all up, then supply them to the | |
7949 | register cacheing/storage mechanism. */ | |
7950 | ||
74ca34ce | 7951 | p = rs->buf; |
ea9c271d | 7952 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7953 | { |
74ca34ce DJ |
7954 | if (p[0] == 0 || p[1] == 0) |
7955 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7956 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7957 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7958 | |
c906108c | 7959 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7960 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7961 | else |
7962 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7963 | p += 2; | |
7964 | } | |
7965 | ||
a744cf53 MS |
7966 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7967 | { | |
7968 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7969 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7970 | |
7971 | if (r->in_g_packet) | |
7972 | { | |
9dc193c3 | 7973 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7974 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7975 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7976 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7977 | else if (rs->buf[r->offset * 2] == 'x') |
7978 | { | |
7979 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7980 | /* The register isn't available, mark it as such (at | |
7981 | the same time setting the value to zero). */ | |
7982 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7983 | } | |
7984 | else | |
7985 | regcache_raw_supply (regcache, r->regnum, | |
7986 | regs + r->offset); | |
7987 | } | |
7988 | } | |
c906108c SS |
7989 | } |
7990 | ||
29709017 | 7991 | static void |
56be3814 | 7992 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7993 | { |
7994 | send_g_packet (); | |
56be3814 | 7995 | process_g_packet (regcache); |
29709017 DJ |
7996 | } |
7997 | ||
e6e4e701 PA |
7998 | /* Make the remote selected traceframe match GDB's selected |
7999 | traceframe. */ | |
8000 | ||
8001 | static void | |
8002 | set_remote_traceframe (void) | |
8003 | { | |
8004 | int newnum; | |
262e1174 | 8005 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8006 | |
262e1174 | 8007 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8008 | return; |
8009 | ||
8010 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8011 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8012 | |
8013 | newnum = target_trace_find (tfind_number, | |
8014 | get_traceframe_number (), 0, 0, NULL); | |
8015 | ||
8016 | /* Should not happen. If it does, all bets are off. */ | |
8017 | if (newnum != get_traceframe_number ()) | |
8018 | warning (_("could not set remote traceframe")); | |
8019 | } | |
8020 | ||
f6ac5f3d PA |
8021 | void |
8022 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8023 | { |
ac7936df | 8024 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8025 | struct remote_state *rs = get_remote_state (); |
8026 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8027 | int i; |
8028 | ||
e6e4e701 | 8029 | set_remote_traceframe (); |
bcc0c096 | 8030 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
8031 | |
8032 | if (regnum >= 0) | |
8033 | { | |
5cd63fda | 8034 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8035 | |
74ca34ce DJ |
8036 | gdb_assert (reg != NULL); |
8037 | ||
8038 | /* If this register might be in the 'g' packet, try that first - | |
8039 | we are likely to read more than one register. If this is the | |
8040 | first 'g' packet, we might be overly optimistic about its | |
8041 | contents, so fall back to 'p'. */ | |
8042 | if (reg->in_g_packet) | |
8043 | { | |
56be3814 | 8044 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8045 | if (reg->in_g_packet) |
8046 | return; | |
8047 | } | |
8048 | ||
56be3814 | 8049 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8050 | return; |
8051 | ||
8052 | /* This register is not available. */ | |
56be3814 | 8053 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
8054 | |
8055 | return; | |
8056 | } | |
8057 | ||
56be3814 | 8058 | fetch_registers_using_g (regcache); |
74ca34ce | 8059 | |
5cd63fda | 8060 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8061 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8062 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8063 | { |
8064 | /* This register is not available. */ | |
56be3814 | 8065 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
8066 | } |
8067 | } | |
8068 | ||
c906108c SS |
8069 | /* Prepare to store registers. Since we may send them all (using a |
8070 | 'G' request), we have to read out the ones we don't want to change | |
8071 | first. */ | |
8072 | ||
f6ac5f3d PA |
8073 | void |
8074 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8075 | { |
9d6eea31 PA |
8076 | struct remote_state *rs = get_remote_state (); |
8077 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8078 | int i; |
cf0e1e0d | 8079 | |
c906108c | 8080 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8081 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8082 | { |
8083 | case PACKET_DISABLE: | |
8084 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8085 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8086 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8087 | if (rsa->regs[i].in_g_packet) |
8e368124 | 8088 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
8089 | break; |
8090 | case PACKET_ENABLE: | |
8091 | break; | |
8092 | } | |
8093 | } | |
8094 | ||
ad10f812 | 8095 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8096 | packet was not recognized. */ |
5a2468f5 JM |
8097 | |
8098 | static int | |
1f4437a4 MS |
8099 | store_register_using_P (const struct regcache *regcache, |
8100 | struct packet_reg *reg) | |
5a2468f5 | 8101 | { |
ac7936df | 8102 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8103 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8104 | /* Try storing a single register. */ |
6d820c5c | 8105 | char *buf = rs->buf; |
9890e433 | 8106 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8107 | char *p; |
5a2468f5 | 8108 | |
4082afcc | 8109 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8110 | return 0; |
8111 | ||
8112 | if (reg->pnum == -1) | |
8113 | return 0; | |
8114 | ||
ea9c271d | 8115 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8116 | p = buf + strlen (buf); |
56be3814 | 8117 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 8118 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
8119 | putpkt (rs->buf); |
8120 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 8121 | |
74ca34ce DJ |
8122 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8123 | { | |
8124 | case PACKET_OK: | |
8125 | return 1; | |
8126 | case PACKET_ERROR: | |
27a9c0bf MS |
8127 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8128 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
8129 | case PACKET_UNKNOWN: |
8130 | return 0; | |
8131 | default: | |
8132 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8133 | } | |
c906108c SS |
8134 | } |
8135 | ||
23860348 MS |
8136 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8137 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
8138 | |
8139 | static void | |
56be3814 | 8140 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 8141 | { |
d01949b6 | 8142 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8143 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8144 | gdb_byte *regs; |
c906108c SS |
8145 | char *p; |
8146 | ||
193cb69f AC |
8147 | /* Extract all the registers in the regcache copying them into a |
8148 | local buffer. */ | |
8149 | { | |
b323314b | 8150 | int i; |
a744cf53 | 8151 | |
224c3ddb | 8152 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8153 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8154 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8155 | { |
ea9c271d | 8156 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8157 | |
b323314b | 8158 | if (r->in_g_packet) |
56be3814 | 8159 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
8160 | } |
8161 | } | |
c906108c SS |
8162 | |
8163 | /* Command describes registers byte by byte, | |
8164 | each byte encoded as two hex characters. */ | |
6d820c5c | 8165 | p = rs->buf; |
193cb69f | 8166 | *p++ = 'G'; |
74ca34ce | 8167 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
8168 | putpkt (rs->buf); |
8169 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8170 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
8171 | error (_("Could not write registers; remote failure reply '%s'"), |
8172 | rs->buf); | |
c906108c | 8173 | } |
74ca34ce DJ |
8174 | |
8175 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8176 | of the register cache buffer. FIXME: ignores errors. */ | |
8177 | ||
f6ac5f3d PA |
8178 | void |
8179 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8180 | { |
5cd63fda | 8181 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8182 | struct remote_state *rs = get_remote_state (); |
8183 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8184 | int i; |
8185 | ||
e6e4e701 | 8186 | set_remote_traceframe (); |
bcc0c096 | 8187 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
8188 | |
8189 | if (regnum >= 0) | |
8190 | { | |
5cd63fda | 8191 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8192 | |
74ca34ce DJ |
8193 | gdb_assert (reg != NULL); |
8194 | ||
8195 | /* Always prefer to store registers using the 'P' packet if | |
8196 | possible; we often change only a small number of registers. | |
8197 | Sometimes we change a larger number; we'd need help from a | |
8198 | higher layer to know to use 'G'. */ | |
56be3814 | 8199 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8200 | return; |
8201 | ||
8202 | /* For now, don't complain if we have no way to write the | |
8203 | register. GDB loses track of unavailable registers too | |
8204 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8205 | any way to read the register, either... */ |
74ca34ce DJ |
8206 | if (!reg->in_g_packet) |
8207 | return; | |
8208 | ||
56be3814 | 8209 | store_registers_using_G (regcache); |
74ca34ce DJ |
8210 | return; |
8211 | } | |
8212 | ||
56be3814 | 8213 | store_registers_using_G (regcache); |
74ca34ce | 8214 | |
5cd63fda | 8215 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8216 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8217 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8218 | /* See above for why we do not issue an error here. */ |
8219 | continue; | |
8220 | } | |
c906108c SS |
8221 | \f |
8222 | ||
8223 | /* Return the number of hex digits in num. */ | |
8224 | ||
8225 | static int | |
fba45db2 | 8226 | hexnumlen (ULONGEST num) |
c906108c SS |
8227 | { |
8228 | int i; | |
8229 | ||
8230 | for (i = 0; num != 0; i++) | |
8231 | num >>= 4; | |
8232 | ||
325fac50 | 8233 | return std::max (i, 1); |
c906108c SS |
8234 | } |
8235 | ||
2df3850c | 8236 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8237 | |
8238 | static int | |
fba45db2 | 8239 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8240 | { |
c906108c | 8241 | int len = hexnumlen (num); |
a744cf53 | 8242 | |
2df3850c JM |
8243 | return hexnumnstr (buf, num, len); |
8244 | } | |
8245 | ||
c906108c | 8246 | |
2df3850c | 8247 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8248 | |
2df3850c | 8249 | static int |
fba45db2 | 8250 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8251 | { |
8252 | int i; | |
8253 | ||
8254 | buf[width] = '\0'; | |
8255 | ||
8256 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8257 | { |
c5aa993b | 8258 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8259 | num >>= 4; |
8260 | } | |
8261 | ||
2df3850c | 8262 | return width; |
c906108c SS |
8263 | } |
8264 | ||
23860348 | 8265 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8266 | |
8267 | static CORE_ADDR | |
fba45db2 | 8268 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8269 | { |
883b9c6c | 8270 | unsigned int address_size = remote_address_size; |
a744cf53 | 8271 | |
911c95a5 UW |
8272 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8273 | if (!address_size) | |
f5656ead | 8274 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8275 | |
8276 | if (address_size > 0 | |
8277 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8278 | { |
8279 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8280 | in a ULONGEST variable. */ |
c906108c | 8281 | ULONGEST mask = 1; |
a744cf53 | 8282 | |
911c95a5 | 8283 | mask = (mask << address_size) - 1; |
c906108c SS |
8284 | addr &= mask; |
8285 | } | |
8286 | return addr; | |
8287 | } | |
8288 | ||
8289 | /* Determine whether the remote target supports binary downloading. | |
8290 | This is accomplished by sending a no-op memory write of zero length | |
8291 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8292 | the whole packet, since many stubs strip the eighth bit and |
8293 | subsequently compute a wrong checksum, which causes real havoc with | |
8294 | remote_write_bytes. | |
7a292a7a | 8295 | |
96baa820 | 8296 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8297 | clean. In cases like this, the user should clear "remote |
23860348 | 8298 | X-packet". */ |
96baa820 | 8299 | |
c906108c | 8300 | static void |
fba45db2 | 8301 | check_binary_download (CORE_ADDR addr) |
c906108c | 8302 | { |
d01949b6 | 8303 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8304 | |
4082afcc | 8305 | switch (packet_support (PACKET_X)) |
c906108c | 8306 | { |
96baa820 JM |
8307 | case PACKET_DISABLE: |
8308 | break; | |
8309 | case PACKET_ENABLE: | |
8310 | break; | |
8311 | case PACKET_SUPPORT_UNKNOWN: | |
8312 | { | |
96baa820 | 8313 | char *p; |
802188a7 | 8314 | |
2e9f7625 | 8315 | p = rs->buf; |
96baa820 JM |
8316 | *p++ = 'X'; |
8317 | p += hexnumstr (p, (ULONGEST) addr); | |
8318 | *p++ = ','; | |
8319 | p += hexnumstr (p, (ULONGEST) 0); | |
8320 | *p++ = ':'; | |
8321 | *p = '\0'; | |
802188a7 | 8322 | |
2e9f7625 | 8323 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8324 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8325 | |
2e9f7625 | 8326 | if (rs->buf[0] == '\0') |
96baa820 JM |
8327 | { |
8328 | if (remote_debug) | |
8329 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8330 | "binary downloading NOT " |
8331 | "supported by target\n"); | |
444abaca | 8332 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8333 | } |
8334 | else | |
8335 | { | |
8336 | if (remote_debug) | |
8337 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8338 | "binary downloading supported by target\n"); |
444abaca | 8339 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8340 | } |
8341 | break; | |
8342 | } | |
c906108c SS |
8343 | } |
8344 | } | |
8345 | ||
124e13d9 SM |
8346 | /* Helper function to resize the payload in order to try to get a good |
8347 | alignment. We try to write an amount of data such that the next write will | |
8348 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8349 | ||
8350 | static int | |
8351 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8352 | { | |
8353 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8354 | } | |
8355 | ||
c906108c SS |
8356 | /* Write memory data directly to the remote machine. |
8357 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8358 | HEADER is the starting part of the packet. |
c906108c SS |
8359 | MEMADDR is the address in the remote memory space. |
8360 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8361 | LEN_UNITS is the number of addressable units to write. |
8362 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8363 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8364 | should send data as binary ('X'), or hex-encoded ('M'). | |
8365 | ||
8366 | The function creates packet of the form | |
8367 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8368 | ||
124e13d9 | 8369 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8370 | |
8371 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8372 | are omitted. | |
8373 | ||
9b409511 | 8374 | Return the transferred status, error or OK (an |
124e13d9 SM |
8375 | 'enum target_xfer_status' value). Save the number of addressable units |
8376 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8377 | ||
8378 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8379 | exchange between gdb and the stub could look like (?? in place of the | |
8380 | checksum): | |
8381 | ||
8382 | -> $m1000,4#?? | |
8383 | <- aaaabbbbccccdddd | |
8384 | ||
8385 | -> $M1000,3:eeeeffffeeee#?? | |
8386 | <- OK | |
8387 | ||
8388 | -> $m1000,4#?? | |
8389 | <- eeeeffffeeeedddd */ | |
c906108c | 8390 | |
9b409511 | 8391 | static enum target_xfer_status |
a76d924d | 8392 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8393 | const gdb_byte *myaddr, ULONGEST len_units, |
8394 | int unit_size, ULONGEST *xfered_len_units, | |
8395 | char packet_format, int use_length) | |
c906108c | 8396 | { |
6d820c5c | 8397 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8398 | char *p; |
a76d924d DJ |
8399 | char *plen = NULL; |
8400 | int plenlen = 0; | |
124e13d9 SM |
8401 | int todo_units; |
8402 | int units_written; | |
8403 | int payload_capacity_bytes; | |
8404 | int payload_length_bytes; | |
a76d924d DJ |
8405 | |
8406 | if (packet_format != 'X' && packet_format != 'M') | |
8407 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8408 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8409 | |
124e13d9 | 8410 | if (len_units == 0) |
9b409511 | 8411 | return TARGET_XFER_EOF; |
b2182ed2 | 8412 | |
124e13d9 | 8413 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8414 | |
6d820c5c DJ |
8415 | /* The packet buffer will be large enough for the payload; |
8416 | get_memory_packet_size ensures this. */ | |
a76d924d | 8417 | rs->buf[0] = '\0'; |
c906108c | 8418 | |
a257b5bb | 8419 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8420 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8421 | ||
124e13d9 | 8422 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8423 | if (!use_length) |
0df8b418 | 8424 | /* The comma won't be used. */ |
124e13d9 SM |
8425 | payload_capacity_bytes += 1; |
8426 | payload_capacity_bytes -= strlen (header); | |
8427 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8428 | |
a76d924d | 8429 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8430 | |
a76d924d DJ |
8431 | strcat (rs->buf, header); |
8432 | p = rs->buf + strlen (header); | |
8433 | ||
8434 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8435 | if (packet_format == 'X') | |
c906108c | 8436 | { |
23860348 | 8437 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8438 | todo_units = std::min (len_units, |
8439 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8440 | if (use_length) |
124e13d9 | 8441 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8442 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8443 | } |
8444 | else | |
8445 | { | |
124e13d9 | 8446 | /* Number of bytes that will fit. */ |
325fac50 PA |
8447 | todo_units |
8448 | = std::min (len_units, | |
8449 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8450 | if (use_length) |
124e13d9 | 8451 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8452 | todo_units = std::min (todo_units, |
8453 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8454 | } |
a76d924d | 8455 | |
124e13d9 | 8456 | if (todo_units <= 0) |
3de11b2e | 8457 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8458 | _("minimum packet size too small to write data")); |
802188a7 | 8459 | |
6765f3e5 DJ |
8460 | /* If we already need another packet, then try to align the end |
8461 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8462 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8463 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8464 | |
a257b5bb | 8465 | /* Append "<memaddr>". */ |
917317f4 JM |
8466 | memaddr = remote_address_masked (memaddr); |
8467 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8468 | |
a76d924d DJ |
8469 | if (use_length) |
8470 | { | |
8471 | /* Append ",". */ | |
8472 | *p++ = ','; | |
802188a7 | 8473 | |
124e13d9 SM |
8474 | /* Append the length and retain its location and size. It may need to be |
8475 | adjusted once the packet body has been created. */ | |
a76d924d | 8476 | plen = p; |
124e13d9 | 8477 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8478 | p += plenlen; |
8479 | } | |
a257b5bb AC |
8480 | |
8481 | /* Append ":". */ | |
917317f4 JM |
8482 | *p++ = ':'; |
8483 | *p = '\0'; | |
802188a7 | 8484 | |
a257b5bb | 8485 | /* Append the packet body. */ |
a76d924d | 8486 | if (packet_format == 'X') |
917317f4 | 8487 | { |
917317f4 JM |
8488 | /* Binary mode. Send target system values byte by byte, in |
8489 | increasing byte addresses. Only escape certain critical | |
8490 | characters. */ | |
124e13d9 SM |
8491 | payload_length_bytes = |
8492 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8493 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8494 | |
124e13d9 | 8495 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8496 | a second try to keep the end of the packet aligned. Don't do |
8497 | this if the packet is tiny. */ | |
124e13d9 | 8498 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8499 | { |
124e13d9 SM |
8500 | int new_todo_units; |
8501 | ||
8502 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8503 | ||
8504 | if (new_todo_units != units_written) | |
8505 | payload_length_bytes = | |
8506 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8507 | (gdb_byte *) p, &units_written, | |
8508 | payload_capacity_bytes); | |
6765f3e5 DJ |
8509 | } |
8510 | ||
124e13d9 SM |
8511 | p += payload_length_bytes; |
8512 | if (use_length && units_written < todo_units) | |
c906108c | 8513 | { |
802188a7 | 8514 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8515 | and we have actually sent fewer units than planned. |
917317f4 JM |
8516 | Fix-up the length field of the packet. Use the same |
8517 | number of characters as before. */ | |
124e13d9 SM |
8518 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8519 | plenlen); | |
917317f4 | 8520 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8521 | } |
a76d924d DJ |
8522 | } |
8523 | else | |
8524 | { | |
917317f4 JM |
8525 | /* Normal mode: Send target system values byte by byte, in |
8526 | increasing byte addresses. Each byte is encoded as a two hex | |
8527 | value. */ | |
124e13d9 SM |
8528 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8529 | units_written = todo_units; | |
c906108c | 8530 | } |
802188a7 | 8531 | |
2e9f7625 | 8532 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8533 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8534 | |
2e9f7625 | 8535 | if (rs->buf[0] == 'E') |
00d84524 | 8536 | return TARGET_XFER_E_IO; |
802188a7 | 8537 | |
124e13d9 SM |
8538 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8539 | send fewer units than we'd planned. */ | |
8540 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8541 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8542 | } |
8543 | ||
a76d924d DJ |
8544 | /* Write memory data directly to the remote machine. |
8545 | This does not inform the data cache; the data cache uses this. | |
8546 | MEMADDR is the address in the remote memory space. | |
8547 | MYADDR is the address of the buffer in our space. | |
8548 | LEN is the number of bytes. | |
8549 | ||
9b409511 YQ |
8550 | Return the transferred status, error or OK (an |
8551 | 'enum target_xfer_status' value). Save the number of bytes | |
8552 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8553 | |
9b409511 YQ |
8554 | static enum target_xfer_status |
8555 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8556 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8557 | { |
a121b7c1 | 8558 | const char *packet_format = NULL; |
a76d924d DJ |
8559 | |
8560 | /* Check whether the target supports binary download. */ | |
8561 | check_binary_download (memaddr); | |
8562 | ||
4082afcc | 8563 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8564 | { |
8565 | case PACKET_ENABLE: | |
8566 | packet_format = "X"; | |
8567 | break; | |
8568 | case PACKET_DISABLE: | |
8569 | packet_format = "M"; | |
8570 | break; | |
8571 | case PACKET_SUPPORT_UNKNOWN: | |
8572 | internal_error (__FILE__, __LINE__, | |
8573 | _("remote_write_bytes: bad internal state")); | |
8574 | default: | |
8575 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8576 | } | |
8577 | ||
8578 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8579 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8580 | packet_format[0], 1); |
a76d924d DJ |
8581 | } |
8582 | ||
9217e74e YQ |
8583 | /* Read memory data directly from the remote machine. |
8584 | This does not use the data cache; the data cache uses this. | |
8585 | MEMADDR is the address in the remote memory space. | |
8586 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8587 | LEN_UNITS is the number of addressable memory units to read.. |
8588 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8589 | |
8590 | Return the transferred status, error or OK (an | |
8591 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8592 | transferred in *XFERED_LEN_UNITS. |
8593 | ||
8594 | See the comment of remote_write_bytes_aux for an example of | |
8595 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8596 | |
8597 | static enum target_xfer_status | |
124e13d9 SM |
8598 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8599 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8600 | { |
8601 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8602 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8603 | char *p; |
124e13d9 SM |
8604 | int todo_units; |
8605 | int decoded_bytes; | |
9217e74e | 8606 | |
124e13d9 | 8607 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8608 | /* The packet buffer will be large enough for the payload; |
8609 | get_memory_packet_size ensures this. */ | |
8610 | ||
124e13d9 | 8611 | /* Number of units that will fit. */ |
325fac50 PA |
8612 | todo_units = std::min (len_units, |
8613 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8614 | |
8615 | /* Construct "m"<memaddr>","<len>". */ | |
8616 | memaddr = remote_address_masked (memaddr); | |
8617 | p = rs->buf; | |
8618 | *p++ = 'm'; | |
8619 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8620 | *p++ = ','; | |
124e13d9 | 8621 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8622 | *p = '\0'; |
8623 | putpkt (rs->buf); | |
8624 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8625 | if (rs->buf[0] == 'E' | |
8626 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8627 | && rs->buf[3] == '\0') | |
8628 | return TARGET_XFER_E_IO; | |
8629 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8630 | characters. */ | |
8631 | p = rs->buf; | |
124e13d9 | 8632 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8633 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8634 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8635 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8636 | } |
8637 | ||
b55fbac4 YQ |
8638 | /* Using the set of read-only target sections of remote, read live |
8639 | read-only memory. | |
8acf9577 YQ |
8640 | |
8641 | For interface/parameters/return description see target.h, | |
8642 | to_xfer_partial. */ | |
8643 | ||
8644 | static enum target_xfer_status | |
b55fbac4 YQ |
8645 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8646 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8647 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8648 | { |
8649 | struct target_section *secp; | |
8650 | struct target_section_table *table; | |
8651 | ||
8652 | secp = target_section_by_addr (ops, memaddr); | |
8653 | if (secp != NULL | |
8654 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8655 | secp->the_bfd_section) | |
8656 | & SEC_READONLY)) | |
8657 | { | |
8658 | struct target_section *p; | |
8659 | ULONGEST memend = memaddr + len; | |
8660 | ||
8661 | table = target_get_section_table (ops); | |
8662 | ||
8663 | for (p = table->sections; p < table->sections_end; p++) | |
8664 | { | |
8665 | if (memaddr >= p->addr) | |
8666 | { | |
8667 | if (memend <= p->endaddr) | |
8668 | { | |
8669 | /* Entire transfer is within this section. */ | |
124e13d9 | 8670 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8671 | xfered_len); |
8acf9577 YQ |
8672 | } |
8673 | else if (memaddr >= p->endaddr) | |
8674 | { | |
8675 | /* This section ends before the transfer starts. */ | |
8676 | continue; | |
8677 | } | |
8678 | else | |
8679 | { | |
8680 | /* This section overlaps the transfer. Just do half. */ | |
8681 | len = p->endaddr - memaddr; | |
124e13d9 | 8682 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8683 | xfered_len); |
8acf9577 YQ |
8684 | } |
8685 | } | |
8686 | } | |
8687 | } | |
8688 | ||
8689 | return TARGET_XFER_EOF; | |
8690 | } | |
8691 | ||
9217e74e YQ |
8692 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8693 | first if the requested memory is unavailable in traceframe. | |
8694 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8695 | |
9b409511 | 8696 | static enum target_xfer_status |
8acf9577 | 8697 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8698 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8699 | ULONGEST *xfered_len) | |
c906108c | 8700 | { |
6b6aa828 | 8701 | if (len == 0) |
96c4f946 | 8702 | return TARGET_XFER_EOF; |
b2182ed2 | 8703 | |
8acf9577 YQ |
8704 | if (get_traceframe_number () != -1) |
8705 | { | |
a79b1bc6 | 8706 | std::vector<mem_range> available; |
8acf9577 YQ |
8707 | |
8708 | /* If we fail to get the set of available memory, then the | |
8709 | target does not support querying traceframe info, and so we | |
8710 | attempt reading from the traceframe anyway (assuming the | |
8711 | target implements the old QTro packet then). */ | |
8712 | if (traceframe_available_memory (&available, memaddr, len)) | |
8713 | { | |
a79b1bc6 | 8714 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8715 | { |
8716 | enum target_xfer_status res; | |
8717 | ||
8718 | /* Don't read into the traceframe's available | |
8719 | memory. */ | |
a79b1bc6 | 8720 | if (!available.empty ()) |
8acf9577 YQ |
8721 | { |
8722 | LONGEST oldlen = len; | |
8723 | ||
a79b1bc6 | 8724 | len = available[0].start - memaddr; |
8acf9577 YQ |
8725 | gdb_assert (len <= oldlen); |
8726 | } | |
8727 | ||
8acf9577 | 8728 | /* This goes through the topmost target again. */ |
b55fbac4 | 8729 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8730 | len, unit_size, xfered_len); |
8acf9577 YQ |
8731 | if (res == TARGET_XFER_OK) |
8732 | return TARGET_XFER_OK; | |
8733 | else | |
8734 | { | |
8735 | /* No use trying further, we know some memory starting | |
8736 | at MEMADDR isn't available. */ | |
8737 | *xfered_len = len; | |
92ffd475 PC |
8738 | return (*xfered_len != 0) ? |
8739 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8740 | } |
8741 | } | |
8742 | ||
8743 | /* Don't try to read more than how much is available, in | |
8744 | case the target implements the deprecated QTro packet to | |
8745 | cater for older GDBs (the target's knowledge of read-only | |
8746 | sections may be outdated by now). */ | |
a79b1bc6 | 8747 | len = available[0].length; |
8acf9577 YQ |
8748 | } |
8749 | } | |
8750 | ||
124e13d9 | 8751 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8752 | } |
74531fed | 8753 | |
c906108c | 8754 | \f |
c906108c | 8755 | |
a76d924d DJ |
8756 | /* Sends a packet with content determined by the printf format string |
8757 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8758 | whether the packet was a success, a failure, or unknown. */ | |
8759 | ||
77b64a49 PA |
8760 | static enum packet_result remote_send_printf (const char *format, ...) |
8761 | ATTRIBUTE_PRINTF (1, 2); | |
8762 | ||
2c0b251b | 8763 | static enum packet_result |
a76d924d DJ |
8764 | remote_send_printf (const char *format, ...) |
8765 | { | |
8766 | struct remote_state *rs = get_remote_state (); | |
8767 | int max_size = get_remote_packet_size (); | |
a76d924d | 8768 | va_list ap; |
a744cf53 | 8769 | |
a76d924d DJ |
8770 | va_start (ap, format); |
8771 | ||
8772 | rs->buf[0] = '\0'; | |
8773 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8774 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8775 | |
8776 | if (putpkt (rs->buf) < 0) | |
8777 | error (_("Communication problem with target.")); | |
8778 | ||
8779 | rs->buf[0] = '\0'; | |
8780 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8781 | ||
8782 | return packet_check_result (rs->buf); | |
8783 | } | |
8784 | ||
a76d924d DJ |
8785 | /* Flash writing can take quite some time. We'll set |
8786 | effectively infinite timeout for flash operations. | |
8787 | In future, we'll need to decide on a better approach. */ | |
8788 | static const int remote_flash_timeout = 1000; | |
8789 | ||
f6ac5f3d PA |
8790 | void |
8791 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 8792 | { |
f5656ead | 8793 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8794 | enum packet_result ret; |
2ec845e7 TT |
8795 | scoped_restore restore_timeout |
8796 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8797 | |
8798 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8799 | phex (address, addr_size), |
a76d924d DJ |
8800 | phex (length, 4)); |
8801 | switch (ret) | |
8802 | { | |
8803 | case PACKET_UNKNOWN: | |
8804 | error (_("Remote target does not support flash erase")); | |
8805 | case PACKET_ERROR: | |
8806 | error (_("Error erasing flash with vFlashErase packet")); | |
8807 | default: | |
8808 | break; | |
8809 | } | |
a76d924d DJ |
8810 | } |
8811 | ||
9b409511 YQ |
8812 | static enum target_xfer_status |
8813 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8814 | ULONGEST length, ULONGEST *xfered_len, | |
8815 | const gdb_byte *data) | |
a76d924d | 8816 | { |
2ec845e7 TT |
8817 | scoped_restore restore_timeout |
8818 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8819 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8820 | xfered_len,'X', 0); | |
a76d924d DJ |
8821 | } |
8822 | ||
f6ac5f3d PA |
8823 | void |
8824 | remote_target::flash_done () | |
a76d924d | 8825 | { |
a76d924d | 8826 | int ret; |
a76d924d | 8827 | |
2ec845e7 TT |
8828 | scoped_restore restore_timeout |
8829 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8830 | ||
a76d924d | 8831 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8832 | |
8833 | switch (ret) | |
8834 | { | |
8835 | case PACKET_UNKNOWN: | |
8836 | error (_("Remote target does not support vFlashDone")); | |
8837 | case PACKET_ERROR: | |
8838 | error (_("Error finishing flash operation")); | |
8839 | default: | |
8840 | break; | |
8841 | } | |
8842 | } | |
8843 | ||
f6ac5f3d PA |
8844 | void |
8845 | remote_target::files_info () | |
c906108c SS |
8846 | { |
8847 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8848 | } | |
8849 | \f | |
8850 | /* Stuff for dealing with the packets which are part of this protocol. | |
8851 | See comment at top of file for details. */ | |
8852 | ||
1927e618 PA |
8853 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8854 | error to higher layers. Called when a serial error is detected. | |
8855 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8856 | the system error message for errno at function entry and final dot |
8857 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8858 | |
8859 | static void | |
8860 | unpush_and_perror (const char *string) | |
8861 | { | |
d6cb50a2 | 8862 | int saved_errno = errno; |
1927e618 PA |
8863 | |
8864 | remote_unpush_target (); | |
d6cb50a2 JK |
8865 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8866 | safe_strerror (saved_errno)); | |
1927e618 PA |
8867 | } |
8868 | ||
048094ac PA |
8869 | /* Read a single character from the remote end. The current quit |
8870 | handler is overridden to avoid quitting in the middle of packet | |
8871 | sequence, as that would break communication with the remote server. | |
8872 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8873 | |
8874 | static int | |
fba45db2 | 8875 | readchar (int timeout) |
c906108c SS |
8876 | { |
8877 | int ch; | |
5d93a237 | 8878 | struct remote_state *rs = get_remote_state (); |
048094ac | 8879 | |
2ec845e7 TT |
8880 | { |
8881 | scoped_restore restore_quit | |
8882 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8883 | |
2ec845e7 | 8884 | rs->got_ctrlc_during_io = 0; |
c906108c | 8885 | |
2ec845e7 | 8886 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8887 | |
2ec845e7 TT |
8888 | if (rs->got_ctrlc_during_io) |
8889 | set_quit_flag (); | |
8890 | } | |
048094ac | 8891 | |
2acceee2 | 8892 | if (ch >= 0) |
0876f84a | 8893 | return ch; |
2acceee2 JM |
8894 | |
8895 | switch ((enum serial_rc) ch) | |
c906108c SS |
8896 | { |
8897 | case SERIAL_EOF: | |
78a095c3 | 8898 | remote_unpush_target (); |
598d3636 | 8899 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8900 | /* no return */ |
c906108c | 8901 | case SERIAL_ERROR: |
1927e618 PA |
8902 | unpush_and_perror (_("Remote communication error. " |
8903 | "Target disconnected.")); | |
2acceee2 | 8904 | /* no return */ |
c906108c | 8905 | case SERIAL_TIMEOUT: |
2acceee2 | 8906 | break; |
c906108c | 8907 | } |
2acceee2 | 8908 | return ch; |
c906108c SS |
8909 | } |
8910 | ||
c33e31fd | 8911 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8912 | writing fails. The current quit handler is overridden to avoid |
8913 | quitting in the middle of packet sequence, as that would break | |
8914 | communication with the remote server. See | |
8915 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8916 | |
8917 | static void | |
8918 | remote_serial_write (const char *str, int len) | |
8919 | { | |
5d93a237 | 8920 | struct remote_state *rs = get_remote_state (); |
048094ac | 8921 | |
2ec845e7 TT |
8922 | scoped_restore restore_quit |
8923 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8924 | |
8925 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8926 | |
8927 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8928 | { |
1927e618 PA |
8929 | unpush_and_perror (_("Remote communication error. " |
8930 | "Target disconnected.")); | |
c33e31fd | 8931 | } |
048094ac PA |
8932 | |
8933 | if (rs->got_ctrlc_during_io) | |
8934 | set_quit_flag (); | |
c33e31fd PA |
8935 | } |
8936 | ||
b3ced9ba PA |
8937 | /* Return a string representing an escaped version of BUF, of len N. |
8938 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8939 | |
b3ced9ba | 8940 | static std::string |
6e5abd65 PA |
8941 | escape_buffer (const char *buf, int n) |
8942 | { | |
d7e74731 | 8943 | string_file stb; |
6e5abd65 | 8944 | |
d7e74731 PA |
8945 | stb.putstrn (buf, n, '\\'); |
8946 | return std::move (stb.string ()); | |
6e5abd65 PA |
8947 | } |
8948 | ||
c906108c SS |
8949 | /* Display a null-terminated packet on stdout, for debugging, using C |
8950 | string notation. */ | |
8951 | ||
8952 | static void | |
baa336ce | 8953 | print_packet (const char *buf) |
c906108c SS |
8954 | { |
8955 | puts_filtered ("\""); | |
43e526b9 | 8956 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8957 | puts_filtered ("\""); |
8958 | } | |
8959 | ||
8960 | int | |
baa336ce | 8961 | putpkt (const char *buf) |
c906108c SS |
8962 | { |
8963 | return putpkt_binary (buf, strlen (buf)); | |
8964 | } | |
8965 | ||
8966 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8967 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8968 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8969 | and for a possible /0 if we are debugging (remote_debug) and want |
8970 | to print the sent packet as a string. */ | |
c906108c SS |
8971 | |
8972 | static int | |
baa336ce | 8973 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8974 | { |
2d717e4f | 8975 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8976 | int i; |
8977 | unsigned char csum = 0; | |
b80406ac TT |
8978 | gdb::def_vector<char> data (cnt + 6); |
8979 | char *buf2 = data.data (); | |
085dd6e6 | 8980 | |
c906108c SS |
8981 | int ch; |
8982 | int tcount = 0; | |
8983 | char *p; | |
8984 | ||
e24a49d8 PA |
8985 | /* Catch cases like trying to read memory or listing threads while |
8986 | we're waiting for a stop reply. The remote server wouldn't be | |
8987 | ready to handle this request, so we'd hang and timeout. We don't | |
8988 | have to worry about this in synchronous mode, because in that | |
8989 | case it's not possible to issue a command while the target is | |
74531fed PA |
8990 | running. This is not a problem in non-stop mode, because in that |
8991 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8992 | if (!target_is_non_stop_p () |
8993 | && target_is_async_p () | |
8994 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8995 | { |
8996 | error (_("Cannot execute this command while the target is running.\n" | |
8997 | "Use the \"interrupt\" command to stop the target\n" | |
8998 | "and then try again.")); | |
8999 | } | |
e24a49d8 | 9000 | |
2d717e4f DJ |
9001 | /* We're sending out a new packet. Make sure we don't look at a |
9002 | stale cached response. */ | |
9003 | rs->cached_wait_status = 0; | |
9004 | ||
c906108c SS |
9005 | /* Copy the packet into buffer BUF2, encapsulating it |
9006 | and giving it a checksum. */ | |
9007 | ||
c906108c SS |
9008 | p = buf2; |
9009 | *p++ = '$'; | |
9010 | ||
9011 | for (i = 0; i < cnt; i++) | |
9012 | { | |
9013 | csum += buf[i]; | |
9014 | *p++ = buf[i]; | |
9015 | } | |
9016 | *p++ = '#'; | |
9017 | *p++ = tohex ((csum >> 4) & 0xf); | |
9018 | *p++ = tohex (csum & 0xf); | |
9019 | ||
9020 | /* Send it over and over until we get a positive ack. */ | |
9021 | ||
9022 | while (1) | |
9023 | { | |
9024 | int started_error_output = 0; | |
9025 | ||
9026 | if (remote_debug) | |
9027 | { | |
9028 | *p = '\0'; | |
b3ced9ba | 9029 | |
6f8976bf YQ |
9030 | int len = (int) (p - buf2); |
9031 | ||
9032 | std::string str | |
9033 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
9034 | ||
9035 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9036 | ||
567a3e54 SM |
9037 | if (len > REMOTE_DEBUG_MAX_CHAR) |
9038 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9039 | len - REMOTE_DEBUG_MAX_CHAR); | |
6f8976bf YQ |
9040 | |
9041 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9042 | |
0f71a2f6 | 9043 | gdb_flush (gdb_stdlog); |
c906108c | 9044 | } |
c33e31fd | 9045 | remote_serial_write (buf2, p - buf2); |
c906108c | 9046 | |
a6f3e723 SL |
9047 | /* If this is a no acks version of the remote protocol, send the |
9048 | packet and move on. */ | |
9049 | if (rs->noack_mode) | |
9050 | break; | |
9051 | ||
74531fed PA |
9052 | /* Read until either a timeout occurs (-2) or '+' is read. |
9053 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9054 | while (1) |
9055 | { | |
9056 | ch = readchar (remote_timeout); | |
9057 | ||
c5aa993b | 9058 | if (remote_debug) |
c906108c SS |
9059 | { |
9060 | switch (ch) | |
9061 | { | |
9062 | case '+': | |
1216fa2c | 9063 | case '-': |
c906108c SS |
9064 | case SERIAL_TIMEOUT: |
9065 | case '$': | |
74531fed | 9066 | case '%': |
c906108c SS |
9067 | if (started_error_output) |
9068 | { | |
9069 | putchar_unfiltered ('\n'); | |
9070 | started_error_output = 0; | |
9071 | } | |
9072 | } | |
9073 | } | |
9074 | ||
9075 | switch (ch) | |
9076 | { | |
9077 | case '+': | |
9078 | if (remote_debug) | |
0f71a2f6 | 9079 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9080 | return 1; |
1216fa2c AC |
9081 | case '-': |
9082 | if (remote_debug) | |
9083 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9084 | /* FALLTHROUGH */ |
c906108c | 9085 | case SERIAL_TIMEOUT: |
c5aa993b | 9086 | tcount++; |
c906108c | 9087 | if (tcount > 3) |
b80406ac | 9088 | return 0; |
23860348 | 9089 | break; /* Retransmit buffer. */ |
c906108c SS |
9090 | case '$': |
9091 | { | |
40e3f985 | 9092 | if (remote_debug) |
2bc416ba | 9093 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9094 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9095 | /* It's probably an old response sent because an ACK |
9096 | was lost. Gobble up the packet and ack it so it | |
9097 | doesn't get retransmitted when we resend this | |
9098 | packet. */ | |
6d820c5c | 9099 | skip_frame (); |
c33e31fd | 9100 | remote_serial_write ("+", 1); |
23860348 | 9101 | continue; /* Now, go look for +. */ |
c906108c | 9102 | } |
74531fed PA |
9103 | |
9104 | case '%': | |
9105 | { | |
9106 | int val; | |
9107 | ||
9108 | /* If we got a notification, handle it, and go back to looking | |
9109 | for an ack. */ | |
9110 | /* We've found the start of a notification. Now | |
9111 | collect the data. */ | |
9112 | val = read_frame (&rs->buf, &rs->buf_size); | |
9113 | if (val >= 0) | |
9114 | { | |
9115 | if (remote_debug) | |
9116 | { | |
b3ced9ba | 9117 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 9118 | |
6e5abd65 PA |
9119 | fprintf_unfiltered (gdb_stdlog, |
9120 | " Notification received: %s\n", | |
b3ced9ba | 9121 | str.c_str ()); |
74531fed | 9122 | } |
5965e028 | 9123 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
9124 | /* We're in sync now, rewait for the ack. */ |
9125 | tcount = 0; | |
9126 | } | |
9127 | else | |
9128 | { | |
9129 | if (remote_debug) | |
9130 | { | |
9131 | if (!started_error_output) | |
9132 | { | |
9133 | started_error_output = 1; | |
9134 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9135 | } | |
9136 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
9137 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
9138 | } | |
9139 | } | |
9140 | continue; | |
9141 | } | |
9142 | /* fall-through */ | |
c906108c SS |
9143 | default: |
9144 | if (remote_debug) | |
9145 | { | |
9146 | if (!started_error_output) | |
9147 | { | |
9148 | started_error_output = 1; | |
0f71a2f6 | 9149 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9150 | } |
0f71a2f6 | 9151 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9152 | } |
9153 | continue; | |
9154 | } | |
23860348 | 9155 | break; /* Here to retransmit. */ |
c906108c SS |
9156 | } |
9157 | ||
9158 | #if 0 | |
9159 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
9160 | able to get out next time we call QUIT, without anything as |
9161 | violent as interrupt_query. If we want to provide a way out of | |
9162 | here without getting to the next QUIT, it should be based on | |
9163 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9164 | if (quit_flag) |
9165 | { | |
9166 | quit_flag = 0; | |
9167 | interrupt_query (); | |
9168 | } | |
9169 | #endif | |
9170 | } | |
a5c0808e | 9171 | |
a6f3e723 | 9172 | return 0; |
c906108c SS |
9173 | } |
9174 | ||
6d820c5c DJ |
9175 | /* Come here after finding the start of a frame when we expected an |
9176 | ack. Do our best to discard the rest of this packet. */ | |
9177 | ||
9178 | static void | |
9179 | skip_frame (void) | |
9180 | { | |
9181 | int c; | |
9182 | ||
9183 | while (1) | |
9184 | { | |
9185 | c = readchar (remote_timeout); | |
9186 | switch (c) | |
9187 | { | |
9188 | case SERIAL_TIMEOUT: | |
9189 | /* Nothing we can do. */ | |
9190 | return; | |
9191 | case '#': | |
9192 | /* Discard the two bytes of checksum and stop. */ | |
9193 | c = readchar (remote_timeout); | |
9194 | if (c >= 0) | |
9195 | c = readchar (remote_timeout); | |
9196 | ||
9197 | return; | |
9198 | case '*': /* Run length encoding. */ | |
9199 | /* Discard the repeat count. */ | |
9200 | c = readchar (remote_timeout); | |
9201 | if (c < 0) | |
9202 | return; | |
9203 | break; | |
9204 | default: | |
9205 | /* A regular character. */ | |
9206 | break; | |
9207 | } | |
9208 | } | |
9209 | } | |
9210 | ||
c906108c | 9211 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9212 | into *BUF, verifying the checksum, length, and handling run-length |
9213 | compression. NUL terminate the buffer. If there is not enough room, | |
9214 | expand *BUF using xrealloc. | |
c906108c | 9215 | |
c2d11a7d JM |
9216 | Returns -1 on error, number of characters in buffer (ignoring the |
9217 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9218 | SERIAL status indications). */ |
c2d11a7d JM |
9219 | |
9220 | static long | |
6d820c5c DJ |
9221 | read_frame (char **buf_p, |
9222 | long *sizeof_buf) | |
c906108c SS |
9223 | { |
9224 | unsigned char csum; | |
c2d11a7d | 9225 | long bc; |
c906108c | 9226 | int c; |
6d820c5c | 9227 | char *buf = *buf_p; |
a6f3e723 | 9228 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9229 | |
9230 | csum = 0; | |
c2d11a7d | 9231 | bc = 0; |
c906108c SS |
9232 | |
9233 | while (1) | |
9234 | { | |
9235 | c = readchar (remote_timeout); | |
c906108c SS |
9236 | switch (c) |
9237 | { | |
9238 | case SERIAL_TIMEOUT: | |
9239 | if (remote_debug) | |
0f71a2f6 | 9240 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9241 | return -1; |
c906108c SS |
9242 | case '$': |
9243 | if (remote_debug) | |
0f71a2f6 JM |
9244 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9245 | gdb_stdlog); | |
23860348 | 9246 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9247 | case '#': |
9248 | { | |
9249 | unsigned char pktcsum; | |
e1b09194 AC |
9250 | int check_0 = 0; |
9251 | int check_1 = 0; | |
c906108c | 9252 | |
c2d11a7d | 9253 | buf[bc] = '\0'; |
c906108c | 9254 | |
e1b09194 AC |
9255 | check_0 = readchar (remote_timeout); |
9256 | if (check_0 >= 0) | |
9257 | check_1 = readchar (remote_timeout); | |
802188a7 | 9258 | |
e1b09194 AC |
9259 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9260 | { | |
9261 | if (remote_debug) | |
2bc416ba | 9262 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9263 | gdb_stdlog); |
e1b09194 AC |
9264 | return -1; |
9265 | } | |
9266 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9267 | { |
9268 | if (remote_debug) | |
2bc416ba | 9269 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9270 | gdb_stdlog); |
40e3f985 FN |
9271 | return -1; |
9272 | } | |
c906108c | 9273 | |
a6f3e723 SL |
9274 | /* Don't recompute the checksum; with no ack packets we |
9275 | don't have any way to indicate a packet retransmission | |
9276 | is necessary. */ | |
9277 | if (rs->noack_mode) | |
9278 | return bc; | |
9279 | ||
e1b09194 | 9280 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9281 | if (csum == pktcsum) |
c2d11a7d | 9282 | return bc; |
c906108c | 9283 | |
c5aa993b | 9284 | if (remote_debug) |
c906108c | 9285 | { |
b3ced9ba | 9286 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9287 | |
6e5abd65 | 9288 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9289 | "Bad checksum, sentsum=0x%x, " |
9290 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9291 | pktcsum, csum, str.c_str ()); |
c906108c | 9292 | } |
c2d11a7d | 9293 | /* Number of characters in buffer ignoring trailing |
23860348 | 9294 | NULL. */ |
c2d11a7d | 9295 | return -1; |
c906108c | 9296 | } |
23860348 | 9297 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9298 | { |
9299 | int repeat; | |
c906108c | 9300 | |
a744cf53 | 9301 | csum += c; |
b4501125 AC |
9302 | c = readchar (remote_timeout); |
9303 | csum += c; | |
23860348 | 9304 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9305 | |
23860348 | 9306 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9307 | |
6d820c5c | 9308 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9309 | { |
6d820c5c DJ |
9310 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
9311 | { | |
9312 | /* Make some more room in the buffer. */ | |
9313 | *sizeof_buf += repeat; | |
224c3ddb | 9314 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9315 | buf = *buf_p; |
9316 | } | |
9317 | ||
c2d11a7d JM |
9318 | memset (&buf[bc], buf[bc - 1], repeat); |
9319 | bc += repeat; | |
c2c6d25f JM |
9320 | continue; |
9321 | } | |
9322 | ||
c2d11a7d | 9323 | buf[bc] = '\0'; |
6d820c5c | 9324 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9325 | return -1; |
c2c6d25f | 9326 | } |
c906108c | 9327 | default: |
6d820c5c | 9328 | if (bc >= *sizeof_buf - 1) |
c906108c | 9329 | { |
6d820c5c DJ |
9330 | /* Make some more room in the buffer. */ |
9331 | *sizeof_buf *= 2; | |
224c3ddb | 9332 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9333 | buf = *buf_p; |
c906108c SS |
9334 | } |
9335 | ||
6d820c5c DJ |
9336 | buf[bc++] = c; |
9337 | csum += c; | |
9338 | continue; | |
c906108c SS |
9339 | } |
9340 | } | |
9341 | } | |
9342 | ||
9343 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9344 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9345 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9346 | rather than timing out; this is used (in synchronous mode) to wait | |
9347 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9348 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9349 | don't have to change all the calls to getpkt to deal with the | |
9350 | return value, because at the moment I don't know what the right | |
23860348 | 9351 | thing to do it for those. */ |
c906108c | 9352 | void |
6d820c5c DJ |
9353 | getpkt (char **buf, |
9354 | long *sizeof_buf, | |
c2d11a7d | 9355 | int forever) |
d9fcf2fb | 9356 | { |
54887903 | 9357 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9358 | } |
9359 | ||
9360 | ||
9361 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9362 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9363 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9364 | rather than timing out; this is used (in synchronous mode) to wait | |
9365 | for a target that is is executing user code to stop. If FOREVER == | |
9366 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9367 | indication of this to the caller. Otherwise return the number of |
9368 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9369 | enough reason to return to the caller. *IS_NOTIF is an output |
9370 | boolean that indicates whether *BUF holds a notification or not | |
9371 | (a regular packet). */ | |
74531fed | 9372 | |
3172dc30 | 9373 | static int |
74531fed | 9374 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9375 | int expecting_notif, int *is_notif) |
c906108c | 9376 | { |
2d717e4f | 9377 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9378 | int c; |
9379 | int tries; | |
9380 | int timeout; | |
df4b58fe | 9381 | int val = -1; |
c906108c | 9382 | |
2d717e4f DJ |
9383 | /* We're reading a new response. Make sure we don't look at a |
9384 | previously cached response. */ | |
9385 | rs->cached_wait_status = 0; | |
9386 | ||
6d820c5c | 9387 | strcpy (*buf, "timeout"); |
c906108c SS |
9388 | |
9389 | if (forever) | |
74531fed PA |
9390 | timeout = watchdog > 0 ? watchdog : -1; |
9391 | else if (expecting_notif) | |
9392 | timeout = 0; /* There should already be a char in the buffer. If | |
9393 | not, bail out. */ | |
c906108c SS |
9394 | else |
9395 | timeout = remote_timeout; | |
9396 | ||
9397 | #define MAX_TRIES 3 | |
9398 | ||
74531fed PA |
9399 | /* Process any number of notifications, and then return when |
9400 | we get a packet. */ | |
9401 | for (;;) | |
c906108c | 9402 | { |
d9c43928 | 9403 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9404 | times. */ |
9405 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9406 | { |
74531fed PA |
9407 | /* This can loop forever if the remote side sends us |
9408 | characters continuously, but if it pauses, we'll get | |
9409 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9410 | we'll count that as a retry. | |
9411 | ||
9412 | Note that even when forever is set, we will only wait | |
9413 | forever prior to the start of a packet. After that, we | |
9414 | expect characters to arrive at a brisk pace. They should | |
9415 | show up within remote_timeout intervals. */ | |
9416 | do | |
9417 | c = readchar (timeout); | |
9418 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9419 | |
9420 | if (c == SERIAL_TIMEOUT) | |
9421 | { | |
74531fed PA |
9422 | if (expecting_notif) |
9423 | return -1; /* Don't complain, it's normal to not get | |
9424 | anything in this case. */ | |
9425 | ||
23860348 | 9426 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9427 | { |
78a095c3 | 9428 | remote_unpush_target (); |
598d3636 JK |
9429 | throw_error (TARGET_CLOSE_ERROR, |
9430 | _("Watchdog timeout has expired. " | |
9431 | "Target detached.")); | |
c906108c | 9432 | } |
c906108c | 9433 | if (remote_debug) |
0f71a2f6 | 9434 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9435 | } |
74531fed PA |
9436 | else |
9437 | { | |
9438 | /* We've found the start of a packet or notification. | |
9439 | Now collect the data. */ | |
9440 | val = read_frame (buf, sizeof_buf); | |
9441 | if (val >= 0) | |
9442 | break; | |
9443 | } | |
9444 | ||
c33e31fd | 9445 | remote_serial_write ("-", 1); |
c906108c | 9446 | } |
c906108c | 9447 | |
74531fed PA |
9448 | if (tries > MAX_TRIES) |
9449 | { | |
9450 | /* We have tried hard enough, and just can't receive the | |
9451 | packet/notification. Give up. */ | |
9452 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9453 | |
74531fed PA |
9454 | /* Skip the ack char if we're in no-ack mode. */ |
9455 | if (!rs->noack_mode) | |
c33e31fd | 9456 | remote_serial_write ("+", 1); |
74531fed PA |
9457 | return -1; |
9458 | } | |
c906108c | 9459 | |
74531fed PA |
9460 | /* If we got an ordinary packet, return that to our caller. */ |
9461 | if (c == '$') | |
c906108c SS |
9462 | { |
9463 | if (remote_debug) | |
43e526b9 | 9464 | { |
6f8976bf YQ |
9465 | std::string str |
9466 | = escape_buffer (*buf, | |
9467 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9468 | ||
9469 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9470 | str.c_str ()); | |
9471 | ||
567a3e54 SM |
9472 | if (val > REMOTE_DEBUG_MAX_CHAR) |
9473 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9474 | val - REMOTE_DEBUG_MAX_CHAR); | |
6e5abd65 | 9475 | |
6f8976bf | 9476 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9477 | } |
a6f3e723 SL |
9478 | |
9479 | /* Skip the ack char if we're in no-ack mode. */ | |
9480 | if (!rs->noack_mode) | |
c33e31fd | 9481 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9482 | if (is_notif != NULL) |
9483 | *is_notif = 0; | |
0876f84a | 9484 | return val; |
c906108c SS |
9485 | } |
9486 | ||
74531fed PA |
9487 | /* If we got a notification, handle it, and go back to looking |
9488 | for a packet. */ | |
9489 | else | |
9490 | { | |
9491 | gdb_assert (c == '%'); | |
9492 | ||
9493 | if (remote_debug) | |
9494 | { | |
b3ced9ba | 9495 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9496 | |
6e5abd65 PA |
9497 | fprintf_unfiltered (gdb_stdlog, |
9498 | " Notification received: %s\n", | |
b3ced9ba | 9499 | str.c_str ()); |
74531fed | 9500 | } |
fee9eda9 YQ |
9501 | if (is_notif != NULL) |
9502 | *is_notif = 1; | |
c906108c | 9503 | |
5965e028 | 9504 | handle_notification (rs->notif_state, *buf); |
c906108c | 9505 | |
74531fed | 9506 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9507 | |
74531fed | 9508 | if (expecting_notif) |
fee9eda9 | 9509 | return val; |
74531fed PA |
9510 | } |
9511 | } | |
9512 | } | |
9513 | ||
9514 | static int | |
9515 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9516 | { | |
fee9eda9 | 9517 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9518 | } |
9519 | ||
9520 | static int | |
fee9eda9 YQ |
9521 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9522 | int *is_notif) | |
74531fed | 9523 | { |
fee9eda9 YQ |
9524 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9525 | is_notif); | |
c906108c | 9526 | } |
74531fed | 9527 | |
cbb8991c DB |
9528 | /* Check whether EVENT is a fork event for the process specified |
9529 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9530 | ||
9531 | static int | |
9532 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9533 | QUEUE_ITER (stop_reply_p) *iter, | |
9534 | stop_reply_p event, | |
9535 | void *data) | |
9536 | { | |
19ba03f4 | 9537 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9538 | int parent_pid = *(int *) param->input; |
9539 | ||
9540 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9541 | { | |
9542 | struct remote_state *rs = get_remote_state (); | |
9543 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9544 | int res; | |
9545 | ||
9546 | res = remote_vkill (child_pid, rs); | |
9547 | if (res != 0) | |
9548 | error (_("Can't kill fork child process %d"), child_pid); | |
9549 | } | |
9550 | ||
9551 | return 1; | |
9552 | } | |
9553 | ||
9554 | /* Kill any new fork children of process PID that haven't been | |
9555 | processed by follow_fork. */ | |
9556 | ||
9557 | static void | |
9558 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9559 | { | |
9560 | struct thread_info *thread; | |
9561 | struct notif_client *notif = ¬if_client_stop; | |
9562 | struct queue_iter_param param; | |
9563 | ||
9564 | /* Kill the fork child threads of any threads in process PID | |
9565 | that are stopped at a fork event. */ | |
9566 | ALL_NON_EXITED_THREADS (thread) | |
9567 | { | |
9568 | struct target_waitstatus *ws = &thread->pending_follow; | |
9569 | ||
9570 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9571 | { | |
9572 | struct remote_state *rs = get_remote_state (); | |
9573 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9574 | int res; | |
9575 | ||
9576 | res = remote_vkill (child_pid, rs); | |
9577 | if (res != 0) | |
9578 | error (_("Can't kill fork child process %d"), child_pid); | |
9579 | } | |
9580 | } | |
9581 | ||
9582 | /* Check for any pending fork events (not reported or processed yet) | |
9583 | in process PID and kill those fork child threads as well. */ | |
9584 | remote_notif_get_pending_events (notif); | |
9585 | param.input = &pid; | |
9586 | param.output = NULL; | |
9587 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9588 | kill_child_of_pending_fork, ¶m); | |
9589 | } | |
9590 | ||
c906108c | 9591 | \f |
8020350c DB |
9592 | /* Target hook to kill the current inferior. */ |
9593 | ||
f6ac5f3d PA |
9594 | void |
9595 | remote_target::kill () | |
43ff13b4 | 9596 | { |
8020350c DB |
9597 | int res = -1; |
9598 | int pid = ptid_get_pid (inferior_ptid); | |
9599 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9600 | |
8020350c | 9601 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9602 | { |
8020350c DB |
9603 | /* If we're stopped while forking and we haven't followed yet, |
9604 | kill the child task. We need to do this before killing the | |
9605 | parent task because if this is a vfork then the parent will | |
9606 | be sleeping. */ | |
9607 | kill_new_fork_children (pid, rs); | |
9608 | ||
9609 | res = remote_vkill (pid, rs); | |
9610 | if (res == 0) | |
0fdf84ca | 9611 | { |
bc1e6c81 | 9612 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9613 | return; |
9614 | } | |
8020350c | 9615 | } |
0fdf84ca | 9616 | |
8020350c DB |
9617 | /* If we are in 'target remote' mode and we are killing the only |
9618 | inferior, then we will tell gdbserver to exit and unpush the | |
9619 | target. */ | |
9620 | if (res == -1 && !remote_multi_process_p (rs) | |
9621 | && number_of_live_inferiors () == 1) | |
9622 | { | |
9623 | remote_kill_k (); | |
9624 | ||
9625 | /* We've killed the remote end, we get to mourn it. If we are | |
9626 | not in extended mode, mourning the inferior also unpushes | |
9627 | remote_ops from the target stack, which closes the remote | |
9628 | connection. */ | |
bc1e6c81 | 9629 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9630 | |
9631 | return; | |
0fdf84ca | 9632 | } |
43ff13b4 | 9633 | |
8020350c | 9634 | error (_("Can't kill process")); |
43ff13b4 JM |
9635 | } |
9636 | ||
8020350c DB |
9637 | /* Send a kill request to the target using the 'vKill' packet. */ |
9638 | ||
82f73884 PA |
9639 | static int |
9640 | remote_vkill (int pid, struct remote_state *rs) | |
9641 | { | |
4082afcc | 9642 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9643 | return -1; |
9644 | ||
9645 | /* Tell the remote target to detach. */ | |
bba74b36 | 9646 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9647 | putpkt (rs->buf); |
9648 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9649 | ||
4082afcc PA |
9650 | switch (packet_ok (rs->buf, |
9651 | &remote_protocol_packets[PACKET_vKill])) | |
9652 | { | |
9653 | case PACKET_OK: | |
9654 | return 0; | |
9655 | case PACKET_ERROR: | |
9656 | return 1; | |
9657 | case PACKET_UNKNOWN: | |
9658 | return -1; | |
9659 | default: | |
9660 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9661 | } | |
82f73884 PA |
9662 | } |
9663 | ||
8020350c DB |
9664 | /* Send a kill request to the target using the 'k' packet. */ |
9665 | ||
82f73884 | 9666 | static void |
8020350c | 9667 | remote_kill_k (void) |
82f73884 | 9668 | { |
8020350c DB |
9669 | /* Catch errors so the user can quit from gdb even when we |
9670 | aren't on speaking terms with the remote system. */ | |
9671 | TRY | |
82f73884 | 9672 | { |
82f73884 | 9673 | putpkt ("k"); |
82f73884 | 9674 | } |
8020350c DB |
9675 | CATCH (ex, RETURN_MASK_ERROR) |
9676 | { | |
9677 | if (ex.error == TARGET_CLOSE_ERROR) | |
9678 | { | |
9679 | /* If we got an (EOF) error that caused the target | |
9680 | to go away, then we're done, that's what we wanted. | |
9681 | "k" is susceptible to cause a premature EOF, given | |
9682 | that the remote server isn't actually required to | |
9683 | reply to "k", and it can happen that it doesn't | |
9684 | even get to reply ACK to the "k". */ | |
9685 | return; | |
9686 | } | |
82f73884 | 9687 | |
8020350c DB |
9688 | /* Otherwise, something went wrong. We didn't actually kill |
9689 | the target. Just propagate the exception, and let the | |
9690 | user or higher layers decide what to do. */ | |
9691 | throw_exception (ex); | |
9692 | } | |
9693 | END_CATCH | |
82f73884 PA |
9694 | } |
9695 | ||
f6ac5f3d PA |
9696 | void |
9697 | remote_target::mourn_inferior () | |
c906108c | 9698 | { |
8020350c | 9699 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9700 | |
9607784a PA |
9701 | /* We're no longer interested in notification events of an inferior |
9702 | that exited or was killed/detached. */ | |
9703 | discard_pending_stop_replies (current_inferior ()); | |
9704 | ||
8020350c DB |
9705 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9706 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9707 | { | |
f6ac5f3d | 9708 | unpush_target (this); |
c906108c | 9709 | |
8020350c DB |
9710 | /* remote_close takes care of doing most of the clean up. */ |
9711 | generic_mourn_inferior (); | |
9712 | return; | |
9713 | } | |
c906108c | 9714 | |
e24a49d8 PA |
9715 | /* In case we got here due to an error, but we're going to stay |
9716 | connected. */ | |
9717 | rs->waiting_for_stop_reply = 0; | |
9718 | ||
dc1981d7 PA |
9719 | /* If the current general thread belonged to the process we just |
9720 | detached from or has exited, the remote side current general | |
9721 | thread becomes undefined. Considering a case like this: | |
9722 | ||
9723 | - We just got here due to a detach. | |
9724 | - The process that we're detaching from happens to immediately | |
9725 | report a global breakpoint being hit in non-stop mode, in the | |
9726 | same thread we had selected before. | |
9727 | - GDB attaches to this process again. | |
9728 | - This event happens to be the next event we handle. | |
9729 | ||
9730 | GDB would consider that the current general thread didn't need to | |
9731 | be set on the stub side (with Hg), since for all it knew, | |
9732 | GENERAL_THREAD hadn't changed. | |
9733 | ||
9734 | Notice that although in all-stop mode, the remote server always | |
9735 | sets the current thread to the thread reporting the stop event, | |
9736 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9737 | not* change the current thread when reporting a breakpoint hit, | |
9738 | due to the decoupling of event reporting and event handling. | |
9739 | ||
9740 | To keep things simple, we always invalidate our notion of the | |
9741 | current thread. */ | |
47f8a51d | 9742 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9743 | |
8020350c | 9744 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9745 | generic_mourn_inferior (); |
9746 | ||
d729566a | 9747 | if (!have_inferiors ()) |
2d717e4f | 9748 | { |
82f73884 PA |
9749 | if (!remote_multi_process_p (rs)) |
9750 | { | |
9751 | /* Check whether the target is running now - some remote stubs | |
9752 | automatically restart after kill. */ | |
9753 | putpkt ("?"); | |
9754 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9755 | ||
9756 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9757 | { | |
3e43a32a MS |
9758 | /* Assume that the target has been restarted. Set |
9759 | inferior_ptid so that bits of core GDB realizes | |
9760 | there's something here, e.g., so that the user can | |
9761 | say "kill" again. */ | |
82f73884 PA |
9762 | inferior_ptid = magic_null_ptid; |
9763 | } | |
82f73884 | 9764 | } |
2d717e4f DJ |
9765 | } |
9766 | } | |
c906108c | 9767 | |
57810aa7 | 9768 | bool |
f6ac5f3d | 9769 | extended_remote_target::supports_disable_randomization () |
03583c20 | 9770 | { |
4082afcc | 9771 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9772 | } |
9773 | ||
9774 | static void | |
9775 | extended_remote_disable_randomization (int val) | |
9776 | { | |
9777 | struct remote_state *rs = get_remote_state (); | |
9778 | char *reply; | |
9779 | ||
bba74b36 YQ |
9780 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9781 | val); | |
03583c20 | 9782 | putpkt (rs->buf); |
b6bb3468 | 9783 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9784 | if (*reply == '\0') |
9785 | error (_("Target does not support QDisableRandomization.")); | |
9786 | if (strcmp (reply, "OK") != 0) | |
9787 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9788 | } | |
9789 | ||
2d717e4f | 9790 | static int |
7c5ded6a | 9791 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9792 | { |
9793 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9794 | int len; |
94585166 | 9795 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9796 | |
2d717e4f DJ |
9797 | /* If the user has disabled vRun support, or we have detected that |
9798 | support is not available, do not try it. */ | |
4082afcc | 9799 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9800 | return -1; |
424163ea | 9801 | |
2d717e4f DJ |
9802 | strcpy (rs->buf, "vRun;"); |
9803 | len = strlen (rs->buf); | |
c906108c | 9804 | |
2d717e4f DJ |
9805 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9806 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9807 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9808 | strlen (remote_exec_file)); | |
2d717e4f | 9809 | |
7c5ded6a | 9810 | if (!args.empty ()) |
2d717e4f | 9811 | { |
2d717e4f | 9812 | int i; |
2d717e4f | 9813 | |
773a1edc | 9814 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9815 | for (i = 0; argv[i] != NULL; i++) |
9816 | { | |
9817 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9818 | error (_("Argument list too long for run packet")); | |
9819 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9820 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9821 | strlen (argv[i])); | |
2d717e4f | 9822 | } |
2d717e4f DJ |
9823 | } |
9824 | ||
9825 | rs->buf[len++] = '\0'; | |
9826 | ||
9827 | putpkt (rs->buf); | |
9828 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9829 | ||
4082afcc | 9830 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9831 | { |
4082afcc | 9832 | case PACKET_OK: |
3405876a | 9833 | /* We have a wait response. All is well. */ |
2d717e4f | 9834 | return 0; |
4082afcc PA |
9835 | case PACKET_UNKNOWN: |
9836 | return -1; | |
9837 | case PACKET_ERROR: | |
2d717e4f DJ |
9838 | if (remote_exec_file[0] == '\0') |
9839 | error (_("Running the default executable on the remote target failed; " | |
9840 | "try \"set remote exec-file\"?")); | |
9841 | else | |
9842 | error (_("Running \"%s\" on the remote target failed"), | |
9843 | remote_exec_file); | |
4082afcc PA |
9844 | default: |
9845 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9846 | } |
c906108c SS |
9847 | } |
9848 | ||
0a2dde4a SDJ |
9849 | /* Helper function to send set/unset environment packets. ACTION is |
9850 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9851 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9852 | sent. */ | |
9853 | ||
9854 | static void | |
9855 | send_environment_packet (struct remote_state *rs, | |
9856 | const char *action, | |
9857 | const char *packet, | |
9858 | const char *value) | |
9859 | { | |
9860 | /* Convert the environment variable to an hex string, which | |
9861 | is the best format to be transmitted over the wire. */ | |
9862 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9863 | strlen (value)); | |
9864 | ||
9865 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9866 | "%s:%s", packet, encoded_value.c_str ()); | |
9867 | ||
9868 | putpkt (rs->buf); | |
9869 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9870 | if (strcmp (rs->buf, "OK") != 0) | |
9871 | warning (_("Unable to %s environment variable '%s' on remote."), | |
9872 | action, value); | |
9873 | } | |
9874 | ||
9875 | /* Helper function to handle the QEnvironment* packets. */ | |
9876 | ||
9877 | static void | |
9878 | extended_remote_environment_support (struct remote_state *rs) | |
9879 | { | |
9880 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) | |
9881 | { | |
9882 | putpkt ("QEnvironmentReset"); | |
9883 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9884 | if (strcmp (rs->buf, "OK") != 0) | |
9885 | warning (_("Unable to reset environment on remote.")); | |
9886 | } | |
9887 | ||
9888 | gdb_environ *e = ¤t_inferior ()->environment; | |
9889 | ||
9890 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9891 | for (const std::string &el : e->user_set_env ()) | |
9892 | send_environment_packet (rs, "set", "QEnvironmentHexEncoded", | |
9893 | el.c_str ()); | |
9894 | ||
9895 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9896 | for (const std::string &el : e->user_unset_env ()) | |
9897 | send_environment_packet (rs, "unset", "QEnvironmentUnset", el.c_str ()); | |
9898 | } | |
9899 | ||
bc3b087d SDJ |
9900 | /* Helper function to set the current working directory for the |
9901 | inferior in the remote target. */ | |
9902 | ||
9903 | static void | |
9904 | extended_remote_set_inferior_cwd (struct remote_state *rs) | |
9905 | { | |
9906 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
9907 | { | |
9908 | const char *inferior_cwd = get_inferior_cwd (); | |
9909 | ||
9910 | if (inferior_cwd != NULL) | |
9911 | { | |
9912 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
9913 | strlen (inferior_cwd)); | |
9914 | ||
9915 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9916 | "QSetWorkingDir:%s", hexpath.c_str ()); | |
9917 | } | |
9918 | else | |
9919 | { | |
9920 | /* An empty inferior_cwd means that the user wants us to | |
9921 | reset the remote server's inferior's cwd. */ | |
9922 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9923 | "QSetWorkingDir:"); | |
9924 | } | |
9925 | ||
9926 | putpkt (rs->buf); | |
9927 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9928 | if (packet_ok (rs->buf, | |
9929 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
9930 | != PACKET_OK) | |
9931 | error (_("\ | |
9932 | Remote replied unexpectedly while setting the inferior's working\n\ | |
9933 | directory: %s"), | |
9934 | rs->buf); | |
9935 | ||
9936 | } | |
9937 | } | |
9938 | ||
2d717e4f DJ |
9939 | /* In the extended protocol we want to be able to do things like |
9940 | "run" and have them basically work as expected. So we need | |
9941 | a special create_inferior function. We support changing the | |
9942 | executable file and the command line arguments, but not the | |
9943 | environment. */ | |
9944 | ||
f6ac5f3d PA |
9945 | void |
9946 | extended_remote_target::create_inferior (const char *exec_file, | |
9947 | const std::string &args, | |
9948 | char **env, int from_tty) | |
43ff13b4 | 9949 | { |
3405876a PA |
9950 | int run_worked; |
9951 | char *stop_reply; | |
9952 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9953 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9954 | |
43ff13b4 | 9955 | /* If running asynchronously, register the target file descriptor |
23860348 | 9956 | with the event loop. */ |
75c99385 | 9957 | if (target_can_async_p ()) |
6a3753b3 | 9958 | target_async (1); |
43ff13b4 | 9959 | |
03583c20 | 9960 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 9961 | if (supports_disable_randomization ()) |
03583c20 UW |
9962 | extended_remote_disable_randomization (disable_randomization); |
9963 | ||
aefd8b33 SDJ |
9964 | /* If startup-with-shell is on, we inform gdbserver to start the |
9965 | remote inferior using a shell. */ | |
9966 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9967 | { | |
9968 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9969 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9970 | putpkt (rs->buf); | |
9971 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9972 | if (strcmp (rs->buf, "OK") != 0) | |
9973 | error (_("\ | |
9974 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9975 | rs->buf); | |
9976 | } | |
9977 | ||
0a2dde4a SDJ |
9978 | extended_remote_environment_support (rs); |
9979 | ||
bc3b087d SDJ |
9980 | extended_remote_set_inferior_cwd (rs); |
9981 | ||
43ff13b4 | 9982 | /* Now restart the remote server. */ |
3405876a PA |
9983 | run_worked = extended_remote_run (args) != -1; |
9984 | if (!run_worked) | |
2d717e4f DJ |
9985 | { |
9986 | /* vRun was not supported. Fail if we need it to do what the | |
9987 | user requested. */ | |
9988 | if (remote_exec_file[0]) | |
9989 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9990 | if (!args.empty ()) |
2d717e4f | 9991 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9992 | |
2d717e4f DJ |
9993 | /* Fall back to "R". */ |
9994 | extended_remote_restart (); | |
9995 | } | |
424163ea | 9996 | |
6c95b8df PA |
9997 | if (!have_inferiors ()) |
9998 | { | |
9999 | /* Clean up from the last time we ran, before we mark the target | |
10000 | running again. This will mark breakpoints uninserted, and | |
10001 | get_offsets may insert breakpoints. */ | |
10002 | init_thread_list (); | |
10003 | init_wait_for_inferior (); | |
10004 | } | |
45280a52 | 10005 | |
3405876a PA |
10006 | /* vRun's success return is a stop reply. */ |
10007 | stop_reply = run_worked ? rs->buf : NULL; | |
10008 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 10009 | |
2d717e4f DJ |
10010 | /* Get updated offsets, if the stub uses qOffsets. */ |
10011 | get_offsets (); | |
2d717e4f | 10012 | } |
c906108c | 10013 | \f |
c5aa993b | 10014 | |
b775012e LM |
10015 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10016 | the list of conditions (in agent expression bytecode format), if any, the | |
10017 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10018 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10019 | |
10020 | static int | |
10021 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10022 | struct bp_target_info *bp_tgt, char *buf, |
10023 | char *buf_end) | |
b775012e | 10024 | { |
3cde5c42 | 10025 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10026 | return 0; |
10027 | ||
10028 | buf += strlen (buf); | |
bba74b36 | 10029 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10030 | buf++; |
10031 | ||
83621223 | 10032 | /* Send conditions to the target. */ |
d538e36d | 10033 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10034 | { |
bba74b36 | 10035 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10036 | buf += strlen (buf); |
3cde5c42 | 10037 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10038 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10039 | *buf = '\0'; | |
10040 | } | |
b775012e LM |
10041 | return 0; |
10042 | } | |
10043 | ||
d3ce09f5 SS |
10044 | static void |
10045 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10046 | struct bp_target_info *bp_tgt, char *buf) | |
10047 | { | |
3cde5c42 | 10048 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10049 | return; |
10050 | ||
10051 | buf += strlen (buf); | |
10052 | ||
10053 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10054 | buf += strlen (buf); | |
10055 | ||
10056 | /* Concatenate all the agent expressions that are commands into the | |
10057 | cmds parameter. */ | |
df97be55 | 10058 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10059 | { |
10060 | sprintf (buf, "X%x,", aexpr->len); | |
10061 | buf += strlen (buf); | |
3cde5c42 | 10062 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10063 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10064 | *buf = '\0'; | |
10065 | } | |
d3ce09f5 SS |
10066 | } |
10067 | ||
8181d85f DJ |
10068 | /* Insert a breakpoint. On targets that have software breakpoint |
10069 | support, we ask the remote target to do the work; on targets | |
10070 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10071 | |
f6ac5f3d PA |
10072 | int |
10073 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10074 | struct bp_target_info *bp_tgt) | |
c906108c | 10075 | { |
d471ea57 AC |
10076 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10077 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10078 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10079 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10080 | |
4082afcc | 10081 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10082 | { |
0d5ed153 | 10083 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10084 | struct remote_state *rs; |
bba74b36 | 10085 | char *p, *endbuf; |
4fff2411 | 10086 | |
28439a30 PA |
10087 | /* Make sure the remote is pointing at the right process, if |
10088 | necessary. */ | |
10089 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10090 | set_general_process (); | |
10091 | ||
4fff2411 JZ |
10092 | rs = get_remote_state (); |
10093 | p = rs->buf; | |
bba74b36 | 10094 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 10095 | |
96baa820 JM |
10096 | *(p++) = 'Z'; |
10097 | *(p++) = '0'; | |
10098 | *(p++) = ','; | |
7c0f6dcc | 10099 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10100 | p += hexnumstr (p, addr); |
579c6ad9 | 10101 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10102 | |
f6ac5f3d | 10103 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10104 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10105 | |
f6ac5f3d | 10106 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10107 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10108 | ||
6d820c5c DJ |
10109 | putpkt (rs->buf); |
10110 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10111 | |
6d820c5c | 10112 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10113 | { |
d471ea57 AC |
10114 | case PACKET_ERROR: |
10115 | return -1; | |
10116 | case PACKET_OK: | |
10117 | return 0; | |
10118 | case PACKET_UNKNOWN: | |
10119 | break; | |
96baa820 JM |
10120 | } |
10121 | } | |
c906108c | 10122 | |
0000e5cc PA |
10123 | /* If this breakpoint has target-side commands but this stub doesn't |
10124 | support Z0 packets, throw error. */ | |
3cde5c42 | 10125 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10126 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10127 | Target doesn't support breakpoints that have target side commands.")); | |
10128 | ||
f6ac5f3d | 10129 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10130 | } |
10131 | ||
f6ac5f3d PA |
10132 | int |
10133 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10134 | struct bp_target_info *bp_tgt, | |
10135 | enum remove_bp_reason reason) | |
c906108c | 10136 | { |
8181d85f | 10137 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10138 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10139 | |
4082afcc | 10140 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10141 | { |
6d820c5c | 10142 | char *p = rs->buf; |
bba74b36 | 10143 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 10144 | |
28439a30 PA |
10145 | /* Make sure the remote is pointing at the right process, if |
10146 | necessary. */ | |
10147 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10148 | set_general_process (); | |
10149 | ||
96baa820 JM |
10150 | *(p++) = 'z'; |
10151 | *(p++) = '0'; | |
10152 | *(p++) = ','; | |
10153 | ||
8181d85f DJ |
10154 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10155 | p += hexnumstr (p, addr); | |
579c6ad9 | 10156 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10157 | |
6d820c5c DJ |
10158 | putpkt (rs->buf); |
10159 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10160 | |
6d820c5c | 10161 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10162 | } |
10163 | ||
f6ac5f3d | 10164 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10165 | } |
10166 | ||
f486487f | 10167 | static enum Z_packet_type |
d471ea57 AC |
10168 | watchpoint_to_Z_packet (int type) |
10169 | { | |
10170 | switch (type) | |
10171 | { | |
10172 | case hw_write: | |
bb858e6a | 10173 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10174 | break; |
10175 | case hw_read: | |
bb858e6a | 10176 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10177 | break; |
10178 | case hw_access: | |
bb858e6a | 10179 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10180 | break; |
10181 | default: | |
8e65ff28 | 10182 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10183 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10184 | } |
10185 | } | |
10186 | ||
f6ac5f3d PA |
10187 | int |
10188 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10189 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10190 | { |
d01949b6 | 10191 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10192 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10193 | char *p; |
d471ea57 | 10194 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10195 | |
4082afcc | 10196 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10197 | return 1; |
802188a7 | 10198 | |
28439a30 PA |
10199 | /* Make sure the remote is pointing at the right process, if |
10200 | necessary. */ | |
10201 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10202 | set_general_process (); | |
10203 | ||
bba74b36 | 10204 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 10205 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10206 | addr = remote_address_masked (addr); |
10207 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10208 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10209 | |
6d820c5c DJ |
10210 | putpkt (rs->buf); |
10211 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10212 | |
6d820c5c | 10213 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10214 | { |
10215 | case PACKET_ERROR: | |
d471ea57 | 10216 | return -1; |
85d721b8 PA |
10217 | case PACKET_UNKNOWN: |
10218 | return 1; | |
d471ea57 AC |
10219 | case PACKET_OK: |
10220 | return 0; | |
10221 | } | |
8e65ff28 | 10222 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10223 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10224 | } |
10225 | ||
57810aa7 | 10226 | bool |
f6ac5f3d PA |
10227 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10228 | CORE_ADDR start, int length) | |
283002cf MR |
10229 | { |
10230 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10231 | ||
10232 | return diff < length; | |
10233 | } | |
10234 | ||
d471ea57 | 10235 | |
f6ac5f3d PA |
10236 | int |
10237 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10238 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10239 | { |
d01949b6 | 10240 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10241 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10242 | char *p; |
d471ea57 AC |
10243 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10244 | ||
4082afcc | 10245 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10246 | return -1; |
802188a7 | 10247 | |
28439a30 PA |
10248 | /* Make sure the remote is pointing at the right process, if |
10249 | necessary. */ | |
10250 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10251 | set_general_process (); | |
10252 | ||
bba74b36 | 10253 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 10254 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10255 | addr = remote_address_masked (addr); |
10256 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10257 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
10258 | putpkt (rs->buf); |
10259 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10260 | |
6d820c5c | 10261 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10262 | { |
10263 | case PACKET_ERROR: | |
10264 | case PACKET_UNKNOWN: | |
10265 | return -1; | |
10266 | case PACKET_OK: | |
10267 | return 0; | |
10268 | } | |
8e65ff28 | 10269 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10270 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10271 | } |
10272 | ||
3c3bea1c | 10273 | |
501eef12 | 10274 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 10275 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 10276 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 10277 | |
f6ac5f3d PA |
10278 | int |
10279 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10280 | { |
10281 | if (remote_hw_watchpoint_length_limit == 0) | |
10282 | return 0; | |
10283 | else if (remote_hw_watchpoint_length_limit < 0) | |
10284 | return 1; | |
10285 | else if (len <= remote_hw_watchpoint_length_limit) | |
10286 | return 1; | |
10287 | else | |
10288 | return 0; | |
10289 | } | |
10290 | ||
f6ac5f3d PA |
10291 | int |
10292 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10293 | { |
3c3bea1c GS |
10294 | if (type == bp_hardware_breakpoint) |
10295 | { | |
10296 | if (remote_hw_breakpoint_limit == 0) | |
10297 | return 0; | |
501eef12 AC |
10298 | else if (remote_hw_breakpoint_limit < 0) |
10299 | return 1; | |
3c3bea1c GS |
10300 | else if (cnt <= remote_hw_breakpoint_limit) |
10301 | return 1; | |
10302 | } | |
10303 | else | |
10304 | { | |
10305 | if (remote_hw_watchpoint_limit == 0) | |
10306 | return 0; | |
501eef12 AC |
10307 | else if (remote_hw_watchpoint_limit < 0) |
10308 | return 1; | |
3c3bea1c GS |
10309 | else if (ot) |
10310 | return -1; | |
10311 | else if (cnt <= remote_hw_watchpoint_limit) | |
10312 | return 1; | |
10313 | } | |
10314 | return -1; | |
10315 | } | |
10316 | ||
f7e6eed5 PA |
10317 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10318 | ||
57810aa7 | 10319 | bool |
f6ac5f3d | 10320 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10321 | { |
799a2abe | 10322 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10323 | |
799a2abe | 10324 | return (thread->priv != NULL |
7aabaf9d SM |
10325 | && (get_remote_thread_info (thread)->stop_reason |
10326 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10327 | } |
10328 | ||
10329 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10330 | remote. */ | |
10331 | ||
57810aa7 | 10332 | bool |
f6ac5f3d | 10333 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10334 | { |
f7e6eed5 PA |
10335 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10336 | } | |
10337 | ||
10338 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10339 | ||
57810aa7 | 10340 | bool |
f6ac5f3d | 10341 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10342 | { |
799a2abe | 10343 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10344 | |
799a2abe | 10345 | return (thread->priv != NULL |
7aabaf9d SM |
10346 | && (get_remote_thread_info (thread)->stop_reason |
10347 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10348 | } |
10349 | ||
10350 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10351 | remote. */ | |
10352 | ||
57810aa7 | 10353 | bool |
f6ac5f3d | 10354 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10355 | { |
f7e6eed5 PA |
10356 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10357 | } | |
10358 | ||
57810aa7 | 10359 | bool |
f6ac5f3d | 10360 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10361 | { |
799a2abe | 10362 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10363 | |
799a2abe | 10364 | return (thread->priv != NULL |
7aabaf9d SM |
10365 | && (get_remote_thread_info (thread)->stop_reason |
10366 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10367 | } |
10368 | ||
57810aa7 | 10369 | bool |
f6ac5f3d | 10370 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10371 | { |
799a2abe | 10372 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10373 | |
799a2abe | 10374 | if (thread->priv != NULL |
7aabaf9d SM |
10375 | && (get_remote_thread_info (thread)->stop_reason |
10376 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10377 | { |
7aabaf9d | 10378 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10379 | return true; |
4aa7a7f5 JJ |
10380 | } |
10381 | ||
57810aa7 | 10382 | return false; |
3c3bea1c GS |
10383 | } |
10384 | ||
10385 | ||
f6ac5f3d PA |
10386 | int |
10387 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10388 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10389 | { |
0d5ed153 | 10390 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10391 | struct remote_state *rs; |
bba74b36 | 10392 | char *p, *endbuf; |
dd61ec5c | 10393 | char *message; |
3c3bea1c | 10394 | |
4082afcc | 10395 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10396 | return -1; |
2bc416ba | 10397 | |
28439a30 PA |
10398 | /* Make sure the remote is pointing at the right process, if |
10399 | necessary. */ | |
10400 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10401 | set_general_process (); | |
10402 | ||
4fff2411 JZ |
10403 | rs = get_remote_state (); |
10404 | p = rs->buf; | |
bba74b36 | 10405 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10406 | |
96baa820 JM |
10407 | *(p++) = 'Z'; |
10408 | *(p++) = '1'; | |
10409 | *(p++) = ','; | |
802188a7 | 10410 | |
0d5ed153 | 10411 | addr = remote_address_masked (addr); |
96baa820 | 10412 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10413 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10414 | |
f6ac5f3d | 10415 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10416 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10417 | |
f6ac5f3d | 10418 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10419 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10420 | ||
6d820c5c DJ |
10421 | putpkt (rs->buf); |
10422 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10423 | |
6d820c5c | 10424 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10425 | { |
10426 | case PACKET_ERROR: | |
dd61ec5c MW |
10427 | if (rs->buf[1] == '.') |
10428 | { | |
10429 | message = strchr (rs->buf + 2, '.'); | |
10430 | if (message) | |
0316657e | 10431 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10432 | } |
10433 | return -1; | |
d471ea57 AC |
10434 | case PACKET_UNKNOWN: |
10435 | return -1; | |
10436 | case PACKET_OK: | |
10437 | return 0; | |
10438 | } | |
8e65ff28 | 10439 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10440 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10441 | } |
10442 | ||
d471ea57 | 10443 | |
f6ac5f3d PA |
10444 | int |
10445 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10446 | struct bp_target_info *bp_tgt) | |
96baa820 | 10447 | { |
8181d85f | 10448 | CORE_ADDR addr; |
d01949b6 | 10449 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10450 | char *p = rs->buf; |
bba74b36 | 10451 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10452 | |
4082afcc | 10453 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10454 | return -1; |
802188a7 | 10455 | |
28439a30 PA |
10456 | /* Make sure the remote is pointing at the right process, if |
10457 | necessary. */ | |
10458 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10459 | set_general_process (); | |
10460 | ||
96baa820 JM |
10461 | *(p++) = 'z'; |
10462 | *(p++) = '1'; | |
10463 | *(p++) = ','; | |
802188a7 | 10464 | |
8181d85f | 10465 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10466 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10467 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10468 | |
6d820c5c DJ |
10469 | putpkt (rs->buf); |
10470 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10471 | |
6d820c5c | 10472 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10473 | { |
10474 | case PACKET_ERROR: | |
10475 | case PACKET_UNKNOWN: | |
10476 | return -1; | |
10477 | case PACKET_OK: | |
10478 | return 0; | |
10479 | } | |
8e65ff28 | 10480 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10481 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10482 | } |
96baa820 | 10483 | |
4a5e7a5b PA |
10484 | /* Verify memory using the "qCRC:" request. */ |
10485 | ||
f6ac5f3d PA |
10486 | int |
10487 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10488 | { |
10489 | struct remote_state *rs = get_remote_state (); | |
10490 | unsigned long host_crc, target_crc; | |
10491 | char *tmp; | |
10492 | ||
936d2992 PA |
10493 | /* It doesn't make sense to use qCRC if the remote target is |
10494 | connected but not running. */ | |
10495 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10496 | { | |
10497 | enum packet_result result; | |
28439a30 | 10498 | |
936d2992 PA |
10499 | /* Make sure the remote is pointing at the right process. */ |
10500 | set_general_process (); | |
4a5e7a5b | 10501 | |
936d2992 PA |
10502 | /* FIXME: assumes lma can fit into long. */ |
10503 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10504 | (long) lma, (long) size); | |
10505 | putpkt (rs->buf); | |
4a5e7a5b | 10506 | |
936d2992 PA |
10507 | /* Be clever; compute the host_crc before waiting for target |
10508 | reply. */ | |
10509 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10510 | ||
10511 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10512 | |
936d2992 PA |
10513 | result = packet_ok (rs->buf, |
10514 | &remote_protocol_packets[PACKET_qCRC]); | |
10515 | if (result == PACKET_ERROR) | |
10516 | return -1; | |
10517 | else if (result == PACKET_OK) | |
10518 | { | |
10519 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10520 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10521 | |
936d2992 PA |
10522 | return (host_crc == target_crc); |
10523 | } | |
10524 | } | |
4a5e7a5b | 10525 | |
f6ac5f3d | 10526 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10527 | } |
10528 | ||
c906108c SS |
10529 | /* compare-sections command |
10530 | ||
10531 | With no arguments, compares each loadable section in the exec bfd | |
10532 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10533 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10534 | |
c906108c | 10535 | static void |
ac88e2de | 10536 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10537 | { |
10538 | asection *s; | |
ce359b09 | 10539 | const char *sectname; |
c906108c SS |
10540 | bfd_size_type size; |
10541 | bfd_vma lma; | |
10542 | int matched = 0; | |
10543 | int mismatched = 0; | |
4a5e7a5b | 10544 | int res; |
95cf3b38 | 10545 | int read_only = 0; |
c906108c SS |
10546 | |
10547 | if (!exec_bfd) | |
8a3fe4f8 | 10548 | error (_("command cannot be used without an exec file")); |
c906108c | 10549 | |
95cf3b38 DT |
10550 | if (args != NULL && strcmp (args, "-r") == 0) |
10551 | { | |
10552 | read_only = 1; | |
10553 | args = NULL; | |
10554 | } | |
10555 | ||
c5aa993b | 10556 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10557 | { |
10558 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10559 | continue; /* Skip non-loadable section. */ |
c906108c | 10560 | |
95cf3b38 DT |
10561 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10562 | continue; /* Skip writeable sections */ | |
10563 | ||
2c500098 | 10564 | size = bfd_get_section_size (s); |
c906108c | 10565 | if (size == 0) |
0df8b418 | 10566 | continue; /* Skip zero-length section. */ |
c906108c | 10567 | |
ce359b09 | 10568 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10569 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10570 | continue; /* Not the section selected by user. */ |
c906108c | 10571 | |
0df8b418 | 10572 | matched = 1; /* Do this section. */ |
c906108c | 10573 | lma = s->lma; |
c906108c | 10574 | |
b80406ac TT |
10575 | gdb::byte_vector sectdata (size); |
10576 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10577 | |
b80406ac | 10578 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10579 | |
10580 | if (res == -1) | |
5af949e3 | 10581 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10582 | paddress (target_gdbarch (), lma), |
10583 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10584 | |
5af949e3 | 10585 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10586 | paddress (target_gdbarch (), lma), |
10587 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10588 | if (res) |
c906108c SS |
10589 | printf_filtered ("matched.\n"); |
10590 | else | |
c5aa993b JM |
10591 | { |
10592 | printf_filtered ("MIS-MATCHED!\n"); | |
10593 | mismatched++; | |
10594 | } | |
c906108c SS |
10595 | } |
10596 | if (mismatched > 0) | |
936d2992 | 10597 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10598 | the loaded file\n")); |
c906108c | 10599 | if (args && !matched) |
a3f17187 | 10600 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10601 | } |
10602 | ||
0e7f50da UW |
10603 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10604 | into remote target. The number of bytes written to the remote | |
10605 | target is returned, or -1 for error. */ | |
10606 | ||
9b409511 | 10607 | static enum target_xfer_status |
f6ac5f3d | 10608 | remote_write_qxfer (const char *object_name, |
0e7f50da | 10609 | const char *annex, const gdb_byte *writebuf, |
9b409511 | 10610 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10611 | struct packet_config *packet) |
10612 | { | |
10613 | int i, buf_len; | |
10614 | ULONGEST n; | |
0e7f50da UW |
10615 | struct remote_state *rs = get_remote_state (); |
10616 | int max_size = get_memory_write_packet_size (); | |
10617 | ||
7cc244de | 10618 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10619 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10620 | |
10621 | /* Insert header. */ | |
10622 | i = snprintf (rs->buf, max_size, | |
10623 | "qXfer:%s:write:%s:%s:", | |
10624 | object_name, annex ? annex : "", | |
10625 | phex_nz (offset, sizeof offset)); | |
10626 | max_size -= (i + 1); | |
10627 | ||
10628 | /* Escape as much data as fits into rs->buf. */ | |
10629 | buf_len = remote_escape_output | |
124e13d9 | 10630 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10631 | |
10632 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10633 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10634 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10635 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10636 | |
10637 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10638 | |
10639 | *xfered_len = n; | |
92ffd475 | 10640 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10641 | } |
10642 | ||
0876f84a DJ |
10643 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10644 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10645 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10646 | The number of bytes read may be less than LEN without indicating an | |
10647 | EOF. PACKET is checked and updated to indicate whether the remote | |
10648 | target supports this object. */ | |
10649 | ||
9b409511 | 10650 | static enum target_xfer_status |
f6ac5f3d | 10651 | remote_read_qxfer (const char *object_name, |
0876f84a DJ |
10652 | const char *annex, |
10653 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10654 | ULONGEST *xfered_len, |
0876f84a DJ |
10655 | struct packet_config *packet) |
10656 | { | |
0876f84a | 10657 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10658 | LONGEST i, n, packet_len; |
10659 | ||
7cc244de | 10660 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10661 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10662 | |
10663 | /* Check whether we've cached an end-of-object packet that matches | |
10664 | this request. */ | |
8e88304f | 10665 | if (rs->finished_object) |
0876f84a | 10666 | { |
8e88304f TT |
10667 | if (strcmp (object_name, rs->finished_object) == 0 |
10668 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10669 | && offset == rs->finished_offset) | |
9b409511 YQ |
10670 | return TARGET_XFER_EOF; |
10671 | ||
0876f84a DJ |
10672 | |
10673 | /* Otherwise, we're now reading something different. Discard | |
10674 | the cache. */ | |
8e88304f TT |
10675 | xfree (rs->finished_object); |
10676 | xfree (rs->finished_annex); | |
10677 | rs->finished_object = NULL; | |
10678 | rs->finished_annex = NULL; | |
0876f84a DJ |
10679 | } |
10680 | ||
10681 | /* Request only enough to fit in a single packet. The actual data | |
10682 | may not, since we don't know how much of it will need to be escaped; | |
10683 | the target is free to respond with slightly less data. We subtract | |
10684 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10685 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10686 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10687 | object_name, annex ? annex : "", | |
10688 | phex_nz (offset, sizeof offset), | |
10689 | phex_nz (n, sizeof n)); | |
10690 | i = putpkt (rs->buf); | |
10691 | if (i < 0) | |
2ed4b548 | 10692 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10693 | |
10694 | rs->buf[0] = '\0'; | |
10695 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10696 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10697 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10698 | |
10699 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10700 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10701 | ||
10702 | /* 'm' means there is (or at least might be) more data after this | |
10703 | batch. That does not make sense unless there's at least one byte | |
10704 | of data in this reply. */ | |
10705 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10706 | error (_("Remote qXfer reply contained no data.")); | |
10707 | ||
10708 | /* Got some data. */ | |
bc20a4af PA |
10709 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10710 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10711 | |
10712 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10713 | or possibly empty. If we have the final block of a non-empty |
10714 | object, record this fact to bypass a subsequent partial read. */ | |
10715 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10716 | { |
8e88304f TT |
10717 | rs->finished_object = xstrdup (object_name); |
10718 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10719 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10720 | } |
10721 | ||
9b409511 YQ |
10722 | if (i == 0) |
10723 | return TARGET_XFER_EOF; | |
10724 | else | |
10725 | { | |
10726 | *xfered_len = i; | |
10727 | return TARGET_XFER_OK; | |
10728 | } | |
0876f84a DJ |
10729 | } |
10730 | ||
f6ac5f3d PA |
10731 | enum target_xfer_status |
10732 | remote_target::xfer_partial (enum target_object object, | |
10733 | const char *annex, gdb_byte *readbuf, | |
10734 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10735 | ULONGEST *xfered_len) | |
c906108c | 10736 | { |
82f73884 | 10737 | struct remote_state *rs; |
c906108c | 10738 | int i; |
6d820c5c | 10739 | char *p2; |
1e3ff5ad | 10740 | char query_type; |
124e13d9 | 10741 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10742 | |
e6e4e701 | 10743 | set_remote_traceframe (); |
82f73884 PA |
10744 | set_general_thread (inferior_ptid); |
10745 | ||
10746 | rs = get_remote_state (); | |
10747 | ||
b2182ed2 | 10748 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10749 | if (object == TARGET_OBJECT_MEMORY) |
10750 | { | |
2d717e4f DJ |
10751 | /* If the remote target is connected but not running, we should |
10752 | pass this request down to a lower stratum (e.g. the executable | |
10753 | file). */ | |
10754 | if (!target_has_execution) | |
9b409511 | 10755 | return TARGET_XFER_EOF; |
2d717e4f | 10756 | |
21e3b9b9 | 10757 | if (writebuf != NULL) |
124e13d9 SM |
10758 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10759 | xfered_len); | |
21e3b9b9 | 10760 | else |
f6ac5f3d | 10761 | return remote_read_bytes (this, offset, readbuf, len, unit_size, |
124e13d9 | 10762 | xfered_len); |
21e3b9b9 DJ |
10763 | } |
10764 | ||
0df8b418 | 10765 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10766 | if (object == TARGET_OBJECT_SPU) |
10767 | { | |
10768 | if (readbuf) | |
f6ac5f3d | 10769 | return remote_read_qxfer ("spu", annex, readbuf, offset, len, |
9b409511 YQ |
10770 | xfered_len, &remote_protocol_packets |
10771 | [PACKET_qXfer_spu_read]); | |
0e7f50da | 10772 | else |
f6ac5f3d | 10773 | return remote_write_qxfer ("spu", annex, writebuf, offset, len, |
9b409511 YQ |
10774 | xfered_len, &remote_protocol_packets |
10775 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10776 | } |
10777 | ||
4aa995e1 PA |
10778 | /* Handle extra signal info using qxfer packets. */ |
10779 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10780 | { | |
10781 | if (readbuf) | |
f6ac5f3d | 10782 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 10783 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10784 | [PACKET_qXfer_siginfo_read]); |
10785 | else | |
f6ac5f3d | 10786 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 10787 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10788 | &remote_protocol_packets |
10789 | [PACKET_qXfer_siginfo_write]); | |
10790 | } | |
10791 | ||
0fb4aa4b PA |
10792 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10793 | { | |
10794 | if (readbuf) | |
f6ac5f3d | 10795 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 10796 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10797 | &remote_protocol_packets |
10798 | [PACKET_qXfer_statictrace_read]); | |
10799 | else | |
2ed4b548 | 10800 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10801 | } |
10802 | ||
a76d924d DJ |
10803 | /* Only handle flash writes. */ |
10804 | if (writebuf != NULL) | |
10805 | { | |
a76d924d DJ |
10806 | switch (object) |
10807 | { | |
10808 | case TARGET_OBJECT_FLASH: | |
f6ac5f3d | 10809 | return remote_flash_write (this, offset, len, xfered_len, |
9b409511 | 10810 | writebuf); |
a76d924d DJ |
10811 | |
10812 | default: | |
2ed4b548 | 10813 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10814 | } |
10815 | } | |
4b8a223f | 10816 | |
1e3ff5ad AC |
10817 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10818 | objects!!! Instead specify new query packets. */ | |
10819 | switch (object) | |
c906108c | 10820 | { |
1e3ff5ad AC |
10821 | case TARGET_OBJECT_AVR: |
10822 | query_type = 'R'; | |
10823 | break; | |
802188a7 RM |
10824 | |
10825 | case TARGET_OBJECT_AUXV: | |
0876f84a | 10826 | gdb_assert (annex == NULL); |
f6ac5f3d | 10827 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 10828 | xfered_len, |
0876f84a | 10829 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10830 | |
23181151 DJ |
10831 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10832 | return remote_read_qxfer | |
f6ac5f3d | 10833 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10834 | &remote_protocol_packets[PACKET_qXfer_features]); |
10835 | ||
cfa9d6d9 DJ |
10836 | case TARGET_OBJECT_LIBRARIES: |
10837 | return remote_read_qxfer | |
f6ac5f3d | 10838 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10839 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10840 | ||
2268b414 JK |
10841 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10842 | return remote_read_qxfer | |
f6ac5f3d | 10843 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10844 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10845 | ||
fd79ecee DJ |
10846 | case TARGET_OBJECT_MEMORY_MAP: |
10847 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10848 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 10849 | xfered_len, |
fd79ecee DJ |
10850 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10851 | ||
07e059b5 VP |
10852 | case TARGET_OBJECT_OSDATA: |
10853 | /* Should only get here if we're connected. */ | |
5d93a237 | 10854 | gdb_assert (rs->remote_desc); |
07e059b5 | 10855 | return remote_read_qxfer |
f6ac5f3d | 10856 | ("osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10857 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10858 | ||
dc146f7c VP |
10859 | case TARGET_OBJECT_THREADS: |
10860 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10861 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 10862 | xfered_len, |
dc146f7c VP |
10863 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10864 | ||
b3b9301e PA |
10865 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10866 | gdb_assert (annex == NULL); | |
10867 | return remote_read_qxfer | |
f6ac5f3d | 10868 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10869 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10870 | |
10871 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 10872 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 10873 | xfered_len, |
78d85199 | 10874 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10875 | |
10876 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 10877 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 10878 | xfered_len, |
169081d0 TG |
10879 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10880 | ||
9accd112 | 10881 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 10882 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 10883 | xfered_len, |
9accd112 MM |
10884 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10885 | ||
f4abbc16 | 10886 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 10887 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
10888 | len, xfered_len, |
10889 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10890 | ||
c78fa86a | 10891 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 10892 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
10893 | len, xfered_len, |
10894 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10895 | ||
1e3ff5ad | 10896 | default: |
2ed4b548 | 10897 | return TARGET_XFER_E_IO; |
c906108c SS |
10898 | } |
10899 | ||
0df8b418 | 10900 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10901 | large enough let the caller deal with it. */ |
ea9c271d | 10902 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10903 | return TARGET_XFER_E_IO; |
ea9c271d | 10904 | len = get_remote_packet_size (); |
1e3ff5ad | 10905 | |
23860348 | 10906 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10907 | if (!rs->remote_desc) |
8a3fe4f8 | 10908 | error (_("remote query is only available after target open")); |
c906108c | 10909 | |
1e3ff5ad | 10910 | gdb_assert (annex != NULL); |
4b8a223f | 10911 | gdb_assert (readbuf != NULL); |
c906108c | 10912 | |
6d820c5c | 10913 | p2 = rs->buf; |
c906108c SS |
10914 | *p2++ = 'q'; |
10915 | *p2++ = query_type; | |
10916 | ||
23860348 MS |
10917 | /* We used one buffer char for the remote protocol q command and |
10918 | another for the query type. As the remote protocol encapsulation | |
10919 | uses 4 chars plus one extra in case we are debugging | |
10920 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10921 | string. */ | |
c906108c | 10922 | i = 0; |
ea9c271d | 10923 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10924 | { |
1e3ff5ad AC |
10925 | /* Bad caller may have sent forbidden characters. */ |
10926 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10927 | *p2++ = annex[i]; | |
c906108c SS |
10928 | i++; |
10929 | } | |
1e3ff5ad AC |
10930 | *p2 = '\0'; |
10931 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10932 | |
6d820c5c | 10933 | i = putpkt (rs->buf); |
c5aa993b | 10934 | if (i < 0) |
2ed4b548 | 10935 | return TARGET_XFER_E_IO; |
c906108c | 10936 | |
6d820c5c DJ |
10937 | getpkt (&rs->buf, &rs->buf_size, 0); |
10938 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10939 | |
9b409511 | 10940 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 10941 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
10942 | } |
10943 | ||
09c98b44 DB |
10944 | /* Implementation of to_get_memory_xfer_limit. */ |
10945 | ||
f6ac5f3d PA |
10946 | ULONGEST |
10947 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
10948 | { |
10949 | return get_memory_write_packet_size (); | |
10950 | } | |
10951 | ||
f6ac5f3d PA |
10952 | int |
10953 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
10954 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10955 | CORE_ADDR *found_addrp) | |
08388c79 | 10956 | { |
f5656ead | 10957 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10958 | struct remote_state *rs = get_remote_state (); |
10959 | int max_size = get_memory_write_packet_size (); | |
10960 | struct packet_config *packet = | |
10961 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10962 | /* Number of packet bytes used to encode the pattern; |
10963 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10964 | int escaped_pattern_len; |
0df8b418 | 10965 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10966 | int used_pattern_len; |
10967 | int i; | |
10968 | int found; | |
10969 | ULONGEST found_addr; | |
10970 | ||
7cc244de PA |
10971 | /* Don't go to the target if we don't have to. This is done before |
10972 | checking packet_config_support to avoid the possibility that a | |
10973 | success for this edge case means the facility works in | |
10974 | general. */ | |
08388c79 DE |
10975 | if (pattern_len > search_space_len) |
10976 | return 0; | |
10977 | if (pattern_len == 0) | |
10978 | { | |
10979 | *found_addrp = start_addr; | |
10980 | return 1; | |
10981 | } | |
10982 | ||
10983 | /* If we already know the packet isn't supported, fall back to the simple | |
10984 | way of searching memory. */ | |
10985 | ||
4082afcc | 10986 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10987 | { |
10988 | /* Target doesn't provided special support, fall back and use the | |
10989 | standard support (copy memory and do the search here). */ | |
f6ac5f3d | 10990 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
10991 | pattern, pattern_len, found_addrp); |
10992 | } | |
10993 | ||
28439a30 PA |
10994 | /* Make sure the remote is pointing at the right process. */ |
10995 | set_general_process (); | |
10996 | ||
08388c79 DE |
10997 | /* Insert header. */ |
10998 | i = snprintf (rs->buf, max_size, | |
10999 | "qSearch:memory:%s;%s;", | |
5af949e3 | 11000 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11001 | phex_nz (search_space_len, sizeof (search_space_len))); |
11002 | max_size -= (i + 1); | |
11003 | ||
11004 | /* Escape as much data as fits into rs->buf. */ | |
11005 | escaped_pattern_len = | |
124e13d9 | 11006 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
11007 | &used_pattern_len, max_size); |
11008 | ||
11009 | /* Bail if the pattern is too large. */ | |
11010 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11011 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
11012 | |
11013 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
11014 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
11015 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
11016 | { | |
11017 | /* The request may not have worked because the command is not | |
11018 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11019 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11020 | { |
f6ac5f3d | 11021 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11022 | pattern, pattern_len, found_addrp); |
11023 | } | |
11024 | return -1; | |
11025 | } | |
11026 | ||
11027 | if (rs->buf[0] == '0') | |
11028 | found = 0; | |
11029 | else if (rs->buf[0] == '1') | |
11030 | { | |
11031 | found = 1; | |
11032 | if (rs->buf[1] != ',') | |
10e0fa18 | 11033 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
11034 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
11035 | *found_addrp = found_addr; | |
11036 | } | |
11037 | else | |
10e0fa18 | 11038 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
11039 | |
11040 | return found; | |
11041 | } | |
11042 | ||
f6ac5f3d PA |
11043 | void |
11044 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11045 | { |
d01949b6 | 11046 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 11047 | char *p = rs->buf; |
96baa820 | 11048 | |
5d93a237 | 11049 | if (!rs->remote_desc) |
8a3fe4f8 | 11050 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11051 | |
23860348 | 11052 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11053 | if (command == NULL) |
11054 | command = ""; | |
11055 | ||
23860348 | 11056 | /* The query prefix. */ |
2e9f7625 DJ |
11057 | strcpy (rs->buf, "qRcmd,"); |
11058 | p = strchr (rs->buf, '\0'); | |
96baa820 | 11059 | |
3e43a32a MS |
11060 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
11061 | > get_remote_packet_size ()) | |
8a3fe4f8 | 11062 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11063 | |
23860348 | 11064 | /* Encode the actual command. */ |
a30bf1f1 | 11065 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11066 | |
6d820c5c | 11067 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11068 | error (_("Communication problem with target.")); |
96baa820 JM |
11069 | |
11070 | /* get/display the response */ | |
11071 | while (1) | |
11072 | { | |
2e9f7625 DJ |
11073 | char *buf; |
11074 | ||
00bf0b85 | 11075 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11076 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11077 | rs->buf[0] = '\0'; |
5b37825d PW |
11078 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
11079 | { | |
11080 | /* Timeout. Continue to (try to) read responses. | |
11081 | This is better than stopping with an error, assuming the stub | |
11082 | is still executing the (long) monitor command. | |
11083 | If needed, the user can interrupt gdb using C-c, obtaining | |
11084 | an effect similar to stop on timeout. */ | |
11085 | continue; | |
11086 | } | |
2e9f7625 | 11087 | buf = rs->buf; |
96baa820 | 11088 | if (buf[0] == '\0') |
8a3fe4f8 | 11089 | error (_("Target does not support this command.")); |
96baa820 JM |
11090 | if (buf[0] == 'O' && buf[1] != 'K') |
11091 | { | |
23860348 | 11092 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11093 | continue; |
11094 | } | |
11095 | if (strcmp (buf, "OK") == 0) | |
11096 | break; | |
7be570e7 JM |
11097 | if (strlen (buf) == 3 && buf[0] == 'E' |
11098 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11099 | { | |
8a3fe4f8 | 11100 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11101 | } |
96baa820 JM |
11102 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11103 | { | |
11104 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11105 | |
96baa820 JM |
11106 | fputc_unfiltered (c, outbuf); |
11107 | } | |
11108 | break; | |
11109 | } | |
11110 | } | |
11111 | ||
f6ac5f3d PA |
11112 | std::vector<mem_region> |
11113 | remote_target::memory_map () | |
fd79ecee | 11114 | { |
a664f67e | 11115 | std::vector<mem_region> result; |
9018be22 | 11116 | gdb::optional<gdb::char_vector> text |
f6ac5f3d | 11117 | = target_read_stralloc (target_stack, TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11118 | |
11119 | if (text) | |
9018be22 | 11120 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11121 | |
11122 | return result; | |
11123 | } | |
11124 | ||
c906108c | 11125 | static void |
ac88e2de | 11126 | packet_command (const char *args, int from_tty) |
c906108c | 11127 | { |
d01949b6 | 11128 | struct remote_state *rs = get_remote_state (); |
c906108c | 11129 | |
5d93a237 | 11130 | if (!rs->remote_desc) |
8a3fe4f8 | 11131 | error (_("command can only be used with remote target")); |
c906108c | 11132 | |
c5aa993b | 11133 | if (!args) |
8a3fe4f8 | 11134 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11135 | |
11136 | puts_filtered ("sending: "); | |
11137 | print_packet (args); | |
11138 | puts_filtered ("\n"); | |
11139 | putpkt (args); | |
11140 | ||
6d820c5c | 11141 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 11142 | puts_filtered ("received: "); |
6d820c5c | 11143 | print_packet (rs->buf); |
c906108c SS |
11144 | puts_filtered ("\n"); |
11145 | } | |
11146 | ||
11147 | #if 0 | |
23860348 | 11148 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11149 | |
a14ed312 | 11150 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11151 | |
a14ed312 | 11152 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11153 | |
a14ed312 | 11154 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11155 | |
a14ed312 | 11156 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11157 | |
23860348 | 11158 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11159 | |
a14ed312 | 11160 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11161 | |
23860348 | 11162 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11163 | |
a14ed312 | 11164 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11165 | |
a14ed312 | 11166 | static void init_remote_threadtests (void); |
c906108c | 11167 | |
23860348 | 11168 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11169 | |
11170 | static void | |
0b39b52e | 11171 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11172 | { |
11173 | int sample_thread = SAMPLE_THREAD; | |
11174 | ||
a3f17187 | 11175 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11176 | set_general_thread (sample_thread); |
c906108c SS |
11177 | } |
11178 | ||
11179 | ||
11180 | static void | |
0b39b52e | 11181 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11182 | { |
11183 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 11184 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 11185 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 11186 | |
79d7f229 | 11187 | if (remote_thread_alive (ptid)) |
c906108c SS |
11188 | printf_filtered ("PASS: Thread alive test\n"); |
11189 | else | |
11190 | printf_filtered ("FAIL: Thread alive test\n"); | |
11191 | } | |
11192 | ||
23860348 | 11193 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11194 | |
11195 | void | |
fba45db2 | 11196 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11197 | { |
11198 | char hexid[20]; | |
11199 | ||
23860348 | 11200 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
11201 | hexid[16] = 0; |
11202 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11203 | } | |
11204 | ||
11205 | static void | |
0b39b52e | 11206 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11207 | { |
11208 | int startflag = 1; | |
11209 | threadref nextthread; | |
11210 | int done, result_count; | |
11211 | threadref threadlist[3]; | |
11212 | ||
11213 | printf_filtered ("Remote Threadlist test\n"); | |
11214 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11215 | &result_count, &threadlist[0])) | |
11216 | printf_filtered ("FAIL: threadlist test\n"); | |
11217 | else | |
11218 | { | |
11219 | threadref *scan = threadlist; | |
11220 | threadref *limit = scan + result_count; | |
11221 | ||
11222 | while (scan < limit) | |
11223 | output_threadid (" thread ", scan++); | |
11224 | } | |
11225 | } | |
11226 | ||
11227 | void | |
fba45db2 | 11228 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11229 | { |
11230 | output_threadid ("Threadid: ", &info->threadid); | |
11231 | printf_filtered ("Name: %s\n ", info->shortname); | |
11232 | printf_filtered ("State: %s\n", info->display); | |
11233 | printf_filtered ("other: %s\n\n", info->more_display); | |
11234 | } | |
11235 | ||
11236 | int | |
fba45db2 | 11237 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11238 | { |
11239 | int result; | |
11240 | int set; | |
11241 | struct gdb_ext_thread_info threadinfo; | |
11242 | ||
11243 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11244 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11245 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11246 | display_thread_info (&threadinfo); | |
11247 | return result; | |
11248 | } | |
11249 | ||
11250 | static void | |
0b39b52e | 11251 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11252 | { |
11253 | int athread = SAMPLE_THREAD; | |
11254 | threadref thread; | |
11255 | int set; | |
11256 | ||
11257 | int_to_threadref (&thread, athread); | |
11258 | printf_filtered ("Remote Threadinfo test\n"); | |
11259 | if (!get_and_display_threadinfo (&thread)) | |
11260 | printf_filtered ("FAIL cannot get thread info\n"); | |
11261 | } | |
11262 | ||
11263 | static int | |
fba45db2 | 11264 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11265 | { |
11266 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11267 | return get_and_display_threadinfo (ref); | |
11268 | } | |
11269 | ||
11270 | static void | |
0b39b52e | 11271 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11272 | { |
11273 | printf_filtered ("Remote Threadlist update test\n"); | |
11274 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11275 | } | |
11276 | ||
11277 | static void | |
11278 | init_remote_threadtests (void) | |
11279 | { | |
3e43a32a MS |
11280 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11281 | _("Fetch and print the remote list of " | |
11282 | "thread identifiers, one pkt only")); | |
c906108c | 11283 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 11284 | _("Fetch and display info about one thread")); |
c906108c | 11285 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 11286 | _("Test setting to a different thread")); |
c906108c | 11287 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 11288 | _("Iterate through updating all remote thread info")); |
c906108c | 11289 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 11290 | _(" Remote thread alive test ")); |
c906108c SS |
11291 | } |
11292 | ||
11293 | #endif /* 0 */ | |
11294 | ||
f3fb8c85 MS |
11295 | /* Convert a thread ID to a string. Returns the string in a static |
11296 | buffer. */ | |
11297 | ||
f6ac5f3d PA |
11298 | const char * |
11299 | remote_target::pid_to_str (ptid_t ptid) | |
f3fb8c85 | 11300 | { |
79d7f229 | 11301 | static char buf[64]; |
82f73884 | 11302 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11303 | |
7cee1e54 PA |
11304 | if (ptid_equal (ptid, null_ptid)) |
11305 | return normal_pid_to_str (ptid); | |
11306 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
11307 | { |
11308 | /* Printing an inferior target id. */ | |
11309 | ||
11310 | /* When multi-process extensions are off, there's no way in the | |
11311 | remote protocol to know the remote process id, if there's any | |
11312 | at all. There's one exception --- when we're connected with | |
11313 | target extended-remote, and we manually attached to a process | |
11314 | with "attach PID". We don't record anywhere a flag that | |
11315 | allows us to distinguish that case from the case of | |
11316 | connecting with extended-remote and the stub already being | |
11317 | attached to a process, and reporting yes to qAttached, hence | |
11318 | no smart special casing here. */ | |
11319 | if (!remote_multi_process_p (rs)) | |
11320 | { | |
11321 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11322 | return buf; | |
11323 | } | |
11324 | ||
11325 | return normal_pid_to_str (ptid); | |
82f73884 | 11326 | } |
ecd0ada5 | 11327 | else |
79d7f229 | 11328 | { |
ecd0ada5 PA |
11329 | if (ptid_equal (magic_null_ptid, ptid)) |
11330 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11331 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11332 | if (ptid_get_lwp (ptid) == 0) |
11333 | return normal_pid_to_str (ptid); | |
11334 | else | |
11335 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11336 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11337 | else |
11338 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11339 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11340 | return buf; |
11341 | } | |
f3fb8c85 MS |
11342 | } |
11343 | ||
38691318 KB |
11344 | /* Get the address of the thread local variable in OBJFILE which is |
11345 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11346 | ||
f6ac5f3d PA |
11347 | CORE_ADDR |
11348 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11349 | CORE_ADDR offset) | |
38691318 | 11350 | { |
4082afcc | 11351 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11352 | { |
11353 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11354 | char *p = rs->buf; |
82f73884 | 11355 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11356 | enum packet_result result; |
38691318 KB |
11357 | |
11358 | strcpy (p, "qGetTLSAddr:"); | |
11359 | p += strlen (p); | |
82f73884 | 11360 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11361 | *p++ = ','; |
11362 | p += hexnumstr (p, offset); | |
11363 | *p++ = ','; | |
11364 | p += hexnumstr (p, lm); | |
11365 | *p++ = '\0'; | |
11366 | ||
6d820c5c DJ |
11367 | putpkt (rs->buf); |
11368 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11369 | result = packet_ok (rs->buf, |
11370 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11371 | if (result == PACKET_OK) |
38691318 KB |
11372 | { |
11373 | ULONGEST result; | |
11374 | ||
6d820c5c | 11375 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11376 | return result; |
11377 | } | |
571dd617 | 11378 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11379 | throw_error (TLS_GENERIC_ERROR, |
11380 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11381 | else |
109c3e39 AC |
11382 | throw_error (TLS_GENERIC_ERROR, |
11383 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11384 | } |
11385 | else | |
109c3e39 AC |
11386 | throw_error (TLS_GENERIC_ERROR, |
11387 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11388 | /* Not reached. */ |
11389 | return 0; | |
11390 | } | |
11391 | ||
711e434b PM |
11392 | /* Provide thread local base, i.e. Thread Information Block address. |
11393 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11394 | ||
57810aa7 | 11395 | bool |
f6ac5f3d | 11396 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11397 | { |
4082afcc | 11398 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11399 | { |
11400 | struct remote_state *rs = get_remote_state (); | |
11401 | char *p = rs->buf; | |
11402 | char *endp = rs->buf + get_remote_packet_size (); | |
11403 | enum packet_result result; | |
11404 | ||
11405 | strcpy (p, "qGetTIBAddr:"); | |
11406 | p += strlen (p); | |
11407 | p = write_ptid (p, endp, ptid); | |
11408 | *p++ = '\0'; | |
11409 | ||
11410 | putpkt (rs->buf); | |
11411 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11412 | result = packet_ok (rs->buf, | |
11413 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11414 | if (result == PACKET_OK) | |
11415 | { | |
11416 | ULONGEST result; | |
11417 | ||
11418 | unpack_varlen_hex (rs->buf, &result); | |
11419 | if (addr) | |
11420 | *addr = (CORE_ADDR) result; | |
57810aa7 | 11421 | return true; |
711e434b PM |
11422 | } |
11423 | else if (result == PACKET_UNKNOWN) | |
11424 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11425 | else | |
11426 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11427 | } | |
11428 | else | |
11429 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11430 | /* Not reached. */ | |
57810aa7 | 11431 | return false; |
711e434b PM |
11432 | } |
11433 | ||
29709017 DJ |
11434 | /* Support for inferring a target description based on the current |
11435 | architecture and the size of a 'g' packet. While the 'g' packet | |
11436 | can have any size (since optional registers can be left off the | |
11437 | end), some sizes are easily recognizable given knowledge of the | |
11438 | approximate architecture. */ | |
11439 | ||
11440 | struct remote_g_packet_guess | |
11441 | { | |
11442 | int bytes; | |
11443 | const struct target_desc *tdesc; | |
11444 | }; | |
11445 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11446 | DEF_VEC_O(remote_g_packet_guess_s); | |
11447 | ||
11448 | struct remote_g_packet_data | |
11449 | { | |
11450 | VEC(remote_g_packet_guess_s) *guesses; | |
11451 | }; | |
11452 | ||
11453 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11454 | ||
11455 | static void * | |
11456 | remote_g_packet_data_init (struct obstack *obstack) | |
11457 | { | |
11458 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11459 | } | |
11460 | ||
11461 | void | |
11462 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11463 | const struct target_desc *tdesc) | |
11464 | { | |
11465 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11466 | = ((struct remote_g_packet_data *) |
11467 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11468 | struct remote_g_packet_guess new_guess, *guess; |
11469 | int ix; | |
11470 | ||
11471 | gdb_assert (tdesc != NULL); | |
11472 | ||
11473 | for (ix = 0; | |
11474 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11475 | ix++) | |
11476 | if (guess->bytes == bytes) | |
11477 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11478 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11479 | bytes); |
11480 | ||
11481 | new_guess.bytes = bytes; | |
11482 | new_guess.tdesc = tdesc; | |
11483 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11484 | } | |
11485 | ||
d962ef82 DJ |
11486 | /* Return 1 if remote_read_description would do anything on this target |
11487 | and architecture, 0 otherwise. */ | |
11488 | ||
11489 | static int | |
11490 | remote_read_description_p (struct target_ops *target) | |
11491 | { | |
11492 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11493 | = ((struct remote_g_packet_data *) |
11494 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11495 | |
11496 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11497 | return 1; | |
11498 | ||
11499 | return 0; | |
11500 | } | |
11501 | ||
f6ac5f3d PA |
11502 | const struct target_desc * |
11503 | remote_target::read_description () | |
29709017 DJ |
11504 | { |
11505 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11506 | = ((struct remote_g_packet_data *) |
11507 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11508 | |
d962ef82 DJ |
11509 | /* Do not try this during initial connection, when we do not know |
11510 | whether there is a running but stopped thread. */ | |
11511 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
f6ac5f3d | 11512 | return beneath->read_description (); |
d962ef82 | 11513 | |
29709017 DJ |
11514 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11515 | { | |
11516 | struct remote_g_packet_guess *guess; | |
11517 | int ix; | |
11518 | int bytes = send_g_packet (); | |
11519 | ||
11520 | for (ix = 0; | |
11521 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11522 | ix++) | |
11523 | if (guess->bytes == bytes) | |
11524 | return guess->tdesc; | |
11525 | ||
11526 | /* We discard the g packet. A minor optimization would be to | |
11527 | hold on to it, and fill the register cache once we have selected | |
11528 | an architecture, but it's too tricky to do safely. */ | |
11529 | } | |
11530 | ||
f6ac5f3d | 11531 | return beneath->read_description (); |
29709017 DJ |
11532 | } |
11533 | ||
a6b151f1 DJ |
11534 | /* Remote file transfer support. This is host-initiated I/O, not |
11535 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11536 | ||
11537 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11538 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11539 | decrease *LEFT. Otherwise raise an error. */ | |
11540 | ||
11541 | static void | |
a121b7c1 | 11542 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11543 | { |
11544 | int len = strlen (string); | |
11545 | ||
11546 | if (len > *left) | |
11547 | error (_("Packet too long for target.")); | |
11548 | ||
11549 | memcpy (*buffer, string, len); | |
11550 | *buffer += len; | |
11551 | *left -= len; | |
11552 | ||
11553 | /* NUL-terminate the buffer as a convenience, if there is | |
11554 | room. */ | |
11555 | if (*left) | |
11556 | **buffer = '\0'; | |
11557 | } | |
11558 | ||
11559 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11560 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11561 | decrease *LEFT. Otherwise raise an error. */ | |
11562 | ||
11563 | static void | |
11564 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11565 | int len) | |
11566 | { | |
11567 | if (2 * len > *left) | |
11568 | error (_("Packet too long for target.")); | |
11569 | ||
11570 | bin2hex (bytes, *buffer, len); | |
11571 | *buffer += 2 * len; | |
11572 | *left -= 2 * len; | |
11573 | ||
11574 | /* NUL-terminate the buffer as a convenience, if there is | |
11575 | room. */ | |
11576 | if (*left) | |
11577 | **buffer = '\0'; | |
11578 | } | |
11579 | ||
11580 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11581 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11582 | decrease *LEFT. Otherwise raise an error. */ | |
11583 | ||
11584 | static void | |
11585 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11586 | { | |
11587 | int len = hexnumlen (value); | |
11588 | ||
11589 | if (len > *left) | |
11590 | error (_("Packet too long for target.")); | |
11591 | ||
11592 | hexnumstr (*buffer, value); | |
11593 | *buffer += len; | |
11594 | *left -= len; | |
11595 | ||
11596 | /* NUL-terminate the buffer as a convenience, if there is | |
11597 | room. */ | |
11598 | if (*left) | |
11599 | **buffer = '\0'; | |
11600 | } | |
11601 | ||
11602 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11603 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11604 | was included, and *ATTACHMENT to point to the start of the annex | |
11605 | if any. The length of the packet isn't needed here; there may | |
11606 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11607 | ||
11608 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11609 | -1 is returned, the other variables may not be initialized. */ | |
11610 | ||
11611 | static int | |
11612 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11613 | int *remote_errno, char **attachment) | |
11614 | { | |
11615 | char *p, *p2; | |
11616 | ||
11617 | *remote_errno = 0; | |
11618 | *attachment = NULL; | |
11619 | ||
11620 | if (buffer[0] != 'F') | |
11621 | return -1; | |
11622 | ||
11623 | errno = 0; | |
11624 | *retcode = strtol (&buffer[1], &p, 16); | |
11625 | if (errno != 0 || p == &buffer[1]) | |
11626 | return -1; | |
11627 | ||
11628 | /* Check for ",errno". */ | |
11629 | if (*p == ',') | |
11630 | { | |
11631 | errno = 0; | |
11632 | *remote_errno = strtol (p + 1, &p2, 16); | |
11633 | if (errno != 0 || p + 1 == p2) | |
11634 | return -1; | |
11635 | p = p2; | |
11636 | } | |
11637 | ||
11638 | /* Check for ";attachment". If there is no attachment, the | |
11639 | packet should end here. */ | |
11640 | if (*p == ';') | |
11641 | { | |
11642 | *attachment = p + 1; | |
11643 | return 0; | |
11644 | } | |
11645 | else if (*p == '\0') | |
11646 | return 0; | |
11647 | else | |
11648 | return -1; | |
11649 | } | |
11650 | ||
11651 | /* Send a prepared I/O packet to the target and read its response. | |
11652 | The prepared packet is in the global RS->BUF before this function | |
11653 | is called, and the answer is there when we return. | |
11654 | ||
11655 | COMMAND_BYTES is the length of the request to send, which may include | |
11656 | binary data. WHICH_PACKET is the packet configuration to check | |
11657 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11658 | is set to the error number and -1 is returned. Otherwise the value | |
11659 | returned by the function is returned. | |
11660 | ||
11661 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11662 | attachment is expected; an error will be reported if there's a | |
11663 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11664 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11665 | attachment's length. */ | |
11666 | ||
11667 | static int | |
11668 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11669 | int *remote_errno, char **attachment, | |
11670 | int *attachment_len) | |
11671 | { | |
11672 | struct remote_state *rs = get_remote_state (); | |
11673 | int ret, bytes_read; | |
11674 | char *attachment_tmp; | |
11675 | ||
20db9c52 | 11676 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11677 | { |
11678 | *remote_errno = FILEIO_ENOSYS; | |
11679 | return -1; | |
11680 | } | |
11681 | ||
11682 | putpkt_binary (rs->buf, command_bytes); | |
11683 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11684 | ||
11685 | /* If it timed out, something is wrong. Don't try to parse the | |
11686 | buffer. */ | |
11687 | if (bytes_read < 0) | |
11688 | { | |
11689 | *remote_errno = FILEIO_EINVAL; | |
11690 | return -1; | |
11691 | } | |
11692 | ||
11693 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11694 | { | |
11695 | case PACKET_ERROR: | |
11696 | *remote_errno = FILEIO_EINVAL; | |
11697 | return -1; | |
11698 | case PACKET_UNKNOWN: | |
11699 | *remote_errno = FILEIO_ENOSYS; | |
11700 | return -1; | |
11701 | case PACKET_OK: | |
11702 | break; | |
11703 | } | |
11704 | ||
11705 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11706 | &attachment_tmp)) | |
11707 | { | |
11708 | *remote_errno = FILEIO_EINVAL; | |
11709 | return -1; | |
11710 | } | |
11711 | ||
11712 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11713 | if ((attachment_tmp == NULL && attachment != NULL) | |
11714 | || (attachment_tmp != NULL && attachment == NULL)) | |
11715 | { | |
11716 | *remote_errno = FILEIO_EINVAL; | |
11717 | return -1; | |
11718 | } | |
11719 | ||
11720 | /* If an attachment was found, it must point into the packet buffer; | |
11721 | work out how many bytes there were. */ | |
11722 | if (attachment_tmp != NULL) | |
11723 | { | |
11724 | *attachment = attachment_tmp; | |
11725 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11726 | } | |
11727 | ||
11728 | return ret; | |
11729 | } | |
11730 | ||
dd194f6b | 11731 | /* See declaration.h. */ |
80152258 | 11732 | |
dd194f6b PA |
11733 | void |
11734 | readahead_cache::invalidate () | |
80152258 | 11735 | { |
dd194f6b | 11736 | this->fd = -1; |
80152258 PA |
11737 | } |
11738 | ||
dd194f6b | 11739 | /* See declaration.h. */ |
80152258 | 11740 | |
dd194f6b PA |
11741 | void |
11742 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 11743 | { |
dd194f6b PA |
11744 | if (this->fd == fd) |
11745 | this->fd = -1; | |
80152258 PA |
11746 | } |
11747 | ||
15a201c8 GB |
11748 | /* Set the filesystem remote_hostio functions that take FILENAME |
11749 | arguments will use. Return 0 on success, or -1 if an error | |
11750 | occurs (and set *REMOTE_ERRNO). */ | |
11751 | ||
11752 | static int | |
11753 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11754 | { | |
11755 | struct remote_state *rs = get_remote_state (); | |
11756 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11757 | char *p = rs->buf; | |
11758 | int left = get_remote_packet_size () - 1; | |
11759 | char arg[9]; | |
11760 | int ret; | |
11761 | ||
11762 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11763 | return 0; | |
11764 | ||
11765 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11766 | return 0; | |
11767 | ||
11768 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11769 | ||
11770 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11771 | remote_buffer_add_string (&p, &left, arg); | |
11772 | ||
11773 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11774 | remote_errno, NULL, NULL); | |
11775 | ||
11776 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11777 | return 0; | |
11778 | ||
11779 | if (ret == 0) | |
11780 | rs->fs_pid = required_pid; | |
11781 | ||
11782 | return ret; | |
11783 | } | |
11784 | ||
12e2a5fd | 11785 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11786 | |
11787 | static int | |
cd897586 | 11788 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11789 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11790 | int flags, int mode, int warn_if_slow, |
11791 | int *remote_errno) | |
a6b151f1 DJ |
11792 | { |
11793 | struct remote_state *rs = get_remote_state (); | |
11794 | char *p = rs->buf; | |
11795 | int left = get_remote_packet_size () - 1; | |
11796 | ||
4313b8c0 GB |
11797 | if (warn_if_slow) |
11798 | { | |
11799 | static int warning_issued = 0; | |
11800 | ||
11801 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11802 | filename); | |
11803 | ||
11804 | if (!warning_issued) | |
11805 | { | |
11806 | warning (_("File transfers from remote targets can be slow." | |
11807 | " Use \"set sysroot\" to access files locally" | |
11808 | " instead.")); | |
11809 | warning_issued = 1; | |
11810 | } | |
11811 | } | |
11812 | ||
15a201c8 GB |
11813 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11814 | return -1; | |
11815 | ||
a6b151f1 DJ |
11816 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11817 | ||
11818 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11819 | strlen (filename)); | |
11820 | remote_buffer_add_string (&p, &left, ","); | |
11821 | ||
11822 | remote_buffer_add_int (&p, &left, flags); | |
11823 | remote_buffer_add_string (&p, &left, ","); | |
11824 | ||
11825 | remote_buffer_add_int (&p, &left, mode); | |
11826 | ||
11827 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11828 | remote_errno, NULL, NULL); | |
11829 | } | |
11830 | ||
f6ac5f3d PA |
11831 | int |
11832 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
11833 | int flags, int mode, int warn_if_slow, | |
11834 | int *remote_errno) | |
11835 | { | |
11836 | return remote_hostio_open (this, inf, filename, flags, mode, warn_if_slow, | |
11837 | remote_errno); | |
11838 | } | |
11839 | ||
12e2a5fd | 11840 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11841 | |
11842 | static int | |
0d866f62 TT |
11843 | remote_hostio_pwrite (struct target_ops *self, |
11844 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11845 | ULONGEST offset, int *remote_errno) |
11846 | { | |
11847 | struct remote_state *rs = get_remote_state (); | |
11848 | char *p = rs->buf; | |
11849 | int left = get_remote_packet_size (); | |
11850 | int out_len; | |
11851 | ||
dd194f6b | 11852 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 11853 | |
a6b151f1 DJ |
11854 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11855 | ||
11856 | remote_buffer_add_int (&p, &left, fd); | |
11857 | remote_buffer_add_string (&p, &left, ","); | |
11858 | ||
11859 | remote_buffer_add_int (&p, &left, offset); | |
11860 | remote_buffer_add_string (&p, &left, ","); | |
11861 | ||
124e13d9 | 11862 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11863 | get_remote_packet_size () - (p - rs->buf)); |
11864 | ||
11865 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11866 | remote_errno, NULL, NULL); | |
11867 | } | |
11868 | ||
f6ac5f3d PA |
11869 | int |
11870 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11871 | ULONGEST offset, int *remote_errno) | |
11872 | { | |
11873 | return remote_hostio_pwrite (this, fd, write_buf, len, offset, remote_errno); | |
11874 | } | |
11875 | ||
80152258 PA |
11876 | /* Helper for the implementation of to_fileio_pread. Read the file |
11877 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11878 | |
11879 | static int | |
80152258 PA |
11880 | remote_hostio_pread_vFile (struct target_ops *self, |
11881 | int fd, gdb_byte *read_buf, int len, | |
11882 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11883 | { |
11884 | struct remote_state *rs = get_remote_state (); | |
11885 | char *p = rs->buf; | |
11886 | char *attachment; | |
11887 | int left = get_remote_packet_size (); | |
11888 | int ret, attachment_len; | |
11889 | int read_len; | |
11890 | ||
11891 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11892 | ||
11893 | remote_buffer_add_int (&p, &left, fd); | |
11894 | remote_buffer_add_string (&p, &left, ","); | |
11895 | ||
11896 | remote_buffer_add_int (&p, &left, len); | |
11897 | remote_buffer_add_string (&p, &left, ","); | |
11898 | ||
11899 | remote_buffer_add_int (&p, &left, offset); | |
11900 | ||
11901 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11902 | remote_errno, &attachment, | |
11903 | &attachment_len); | |
11904 | ||
11905 | if (ret < 0) | |
11906 | return ret; | |
11907 | ||
bc20a4af | 11908 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11909 | read_buf, len); |
11910 | if (read_len != ret) | |
11911 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11912 | ||
11913 | return ret; | |
11914 | } | |
11915 | ||
dd194f6b | 11916 | /* See declaration.h. */ |
80152258 | 11917 | |
dd194f6b PA |
11918 | int |
11919 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
11920 | ULONGEST offset) | |
80152258 | 11921 | { |
dd194f6b PA |
11922 | if (this->fd == fd |
11923 | && this->offset <= offset | |
11924 | && offset < this->offset + this->bufsize) | |
80152258 | 11925 | { |
dd194f6b | 11926 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
11927 | |
11928 | if (offset + len > max) | |
11929 | len = max - offset; | |
11930 | ||
dd194f6b | 11931 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
11932 | return len; |
11933 | } | |
11934 | ||
11935 | return 0; | |
11936 | } | |
11937 | ||
11938 | /* Implementation of to_fileio_pread. */ | |
11939 | ||
11940 | static int | |
11941 | remote_hostio_pread (struct target_ops *self, | |
11942 | int fd, gdb_byte *read_buf, int len, | |
11943 | ULONGEST offset, int *remote_errno) | |
11944 | { | |
11945 | int ret; | |
11946 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 11947 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 11948 | |
dd194f6b | 11949 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
11950 | if (ret > 0) |
11951 | { | |
11952 | cache->hit_count++; | |
11953 | ||
11954 | if (remote_debug) | |
11955 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11956 | pulongest (cache->hit_count)); | |
11957 | return ret; | |
11958 | } | |
11959 | ||
11960 | cache->miss_count++; | |
11961 | if (remote_debug) | |
11962 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11963 | pulongest (cache->miss_count)); | |
11964 | ||
11965 | cache->fd = fd; | |
11966 | cache->offset = offset; | |
11967 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11968 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11969 | |
11970 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11971 | cache->offset, remote_errno); | |
11972 | if (ret <= 0) | |
11973 | { | |
dd194f6b | 11974 | cache->invalidate_fd (fd); |
80152258 PA |
11975 | return ret; |
11976 | } | |
11977 | ||
11978 | cache->bufsize = ret; | |
dd194f6b | 11979 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
11980 | } |
11981 | ||
f6ac5f3d PA |
11982 | int |
11983 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
11984 | ULONGEST offset, int *remote_errno) | |
11985 | { | |
11986 | return remote_hostio_pread (this, fd, read_buf, len, offset, remote_errno); | |
11987 | } | |
11988 | ||
12e2a5fd | 11989 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11990 | |
11991 | static int | |
df39ea25 | 11992 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11993 | { |
11994 | struct remote_state *rs = get_remote_state (); | |
11995 | char *p = rs->buf; | |
11996 | int left = get_remote_packet_size () - 1; | |
11997 | ||
dd194f6b | 11998 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 11999 | |
a6b151f1 DJ |
12000 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12001 | ||
12002 | remote_buffer_add_int (&p, &left, fd); | |
12003 | ||
12004 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
12005 | remote_errno, NULL, NULL); | |
12006 | } | |
12007 | ||
f6ac5f3d PA |
12008 | int |
12009 | remote_target::fileio_close (int fd, int *remote_errno) | |
12010 | { | |
12011 | return remote_hostio_close (this, fd, remote_errno); | |
12012 | } | |
12013 | ||
12e2a5fd | 12014 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
12015 | |
12016 | static int | |
dbbca37d | 12017 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
12018 | struct inferior *inf, const char *filename, |
12019 | int *remote_errno) | |
a6b151f1 DJ |
12020 | { |
12021 | struct remote_state *rs = get_remote_state (); | |
12022 | char *p = rs->buf; | |
12023 | int left = get_remote_packet_size () - 1; | |
12024 | ||
15a201c8 GB |
12025 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12026 | return -1; | |
12027 | ||
a6b151f1 DJ |
12028 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12029 | ||
12030 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12031 | strlen (filename)); | |
12032 | ||
12033 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
12034 | remote_errno, NULL, NULL); | |
12035 | } | |
12036 | ||
f6ac5f3d PA |
12037 | int |
12038 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12039 | int *remote_errno) | |
12040 | { | |
12041 | return remote_hostio_unlink (this, inf, filename, remote_errno); | |
12042 | } | |
12043 | ||
12e2a5fd | 12044 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12045 | |
f6ac5f3d PA |
12046 | gdb::optional<std::string> |
12047 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12048 | int *remote_errno) | |
b9e7b9c3 UW |
12049 | { |
12050 | struct remote_state *rs = get_remote_state (); | |
12051 | char *p = rs->buf; | |
12052 | char *attachment; | |
12053 | int left = get_remote_packet_size (); | |
12054 | int len, attachment_len; | |
12055 | int read_len; | |
b9e7b9c3 | 12056 | |
15a201c8 | 12057 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12058 | return {}; |
15a201c8 | 12059 | |
b9e7b9c3 UW |
12060 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12061 | ||
12062 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12063 | strlen (filename)); | |
12064 | ||
12065 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
12066 | remote_errno, &attachment, | |
12067 | &attachment_len); | |
12068 | ||
12069 | if (len < 0) | |
e0d3522b | 12070 | return {}; |
b9e7b9c3 | 12071 | |
e0d3522b | 12072 | std::string ret (len, '\0'); |
b9e7b9c3 | 12073 | |
bc20a4af | 12074 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12075 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12076 | if (read_len != len) |
12077 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12078 | ||
b9e7b9c3 UW |
12079 | return ret; |
12080 | } | |
12081 | ||
12e2a5fd | 12082 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12083 | |
f6ac5f3d PA |
12084 | int |
12085 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12086 | { |
12087 | struct remote_state *rs = get_remote_state (); | |
12088 | char *p = rs->buf; | |
12089 | int left = get_remote_packet_size (); | |
12090 | int attachment_len, ret; | |
12091 | char *attachment; | |
12092 | struct fio_stat fst; | |
12093 | int read_len; | |
12094 | ||
464b0089 GB |
12095 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12096 | ||
12097 | remote_buffer_add_int (&p, &left, fd); | |
12098 | ||
12099 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
12100 | remote_errno, &attachment, | |
12101 | &attachment_len); | |
12102 | if (ret < 0) | |
0a93529c | 12103 | { |
464b0089 GB |
12104 | if (*remote_errno != FILEIO_ENOSYS) |
12105 | return ret; | |
12106 | ||
0a93529c GB |
12107 | /* Strictly we should return -1, ENOSYS here, but when |
12108 | "set sysroot remote:" was implemented in August 2008 | |
12109 | BFD's need for a stat function was sidestepped with | |
12110 | this hack. This was not remedied until March 2015 | |
12111 | so we retain the previous behavior to avoid breaking | |
12112 | compatibility. | |
12113 | ||
12114 | Note that the memset is a March 2015 addition; older | |
12115 | GDBs set st_size *and nothing else* so the structure | |
12116 | would have garbage in all other fields. This might | |
12117 | break something but retaining the previous behavior | |
12118 | here would be just too wrong. */ | |
12119 | ||
12120 | memset (st, 0, sizeof (struct stat)); | |
12121 | st->st_size = INT_MAX; | |
12122 | return 0; | |
12123 | } | |
12124 | ||
0a93529c GB |
12125 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12126 | (gdb_byte *) &fst, sizeof (fst)); | |
12127 | ||
12128 | if (read_len != ret) | |
12129 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12130 | ||
12131 | if (read_len != sizeof (fst)) | |
12132 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12133 | read_len, (int) sizeof (fst)); | |
12134 | ||
12135 | remote_fileio_to_host_stat (&fst, st); | |
12136 | ||
12137 | return 0; | |
12138 | } | |
12139 | ||
12e2a5fd | 12140 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12141 | |
57810aa7 | 12142 | bool |
f6ac5f3d | 12143 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12144 | { |
12145 | /* Valgrind GDB presents itself as a remote target but works | |
12146 | on the local filesystem: it does not implement remote get | |
12147 | and users are not expected to set a sysroot. To handle | |
12148 | this case we treat the remote filesystem as local if the | |
12149 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12150 | does not support vFile:open. */ | |
a3be80c3 | 12151 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12152 | { |
12153 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12154 | ||
12155 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12156 | { | |
12157 | int fd, remote_errno; | |
12158 | ||
12159 | /* Try opening a file to probe support. The supplied | |
12160 | filename is irrelevant, we only care about whether | |
12161 | the stub recognizes the packet or not. */ | |
f6ac5f3d | 12162 | fd = remote_hostio_open (this, NULL, "just probing", |
4313b8c0 | 12163 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12164 | &remote_errno); |
12165 | ||
12166 | if (fd >= 0) | |
f6ac5f3d | 12167 | remote_hostio_close (this, fd, &remote_errno); |
e3dd7556 GB |
12168 | |
12169 | ps = packet_support (PACKET_vFile_open); | |
12170 | } | |
12171 | ||
12172 | if (ps == PACKET_DISABLE) | |
12173 | { | |
12174 | static int warning_issued = 0; | |
12175 | ||
12176 | if (!warning_issued) | |
12177 | { | |
12178 | warning (_("remote target does not support file" | |
12179 | " transfer, attempting to access files" | |
12180 | " from local filesystem.")); | |
12181 | warning_issued = 1; | |
12182 | } | |
12183 | ||
57810aa7 | 12184 | return true; |
e3dd7556 GB |
12185 | } |
12186 | } | |
12187 | ||
57810aa7 | 12188 | return false; |
e3dd7556 GB |
12189 | } |
12190 | ||
a6b151f1 DJ |
12191 | static int |
12192 | remote_fileio_errno_to_host (int errnum) | |
12193 | { | |
12194 | switch (errnum) | |
12195 | { | |
12196 | case FILEIO_EPERM: | |
12197 | return EPERM; | |
12198 | case FILEIO_ENOENT: | |
12199 | return ENOENT; | |
12200 | case FILEIO_EINTR: | |
12201 | return EINTR; | |
12202 | case FILEIO_EIO: | |
12203 | return EIO; | |
12204 | case FILEIO_EBADF: | |
12205 | return EBADF; | |
12206 | case FILEIO_EACCES: | |
12207 | return EACCES; | |
12208 | case FILEIO_EFAULT: | |
12209 | return EFAULT; | |
12210 | case FILEIO_EBUSY: | |
12211 | return EBUSY; | |
12212 | case FILEIO_EEXIST: | |
12213 | return EEXIST; | |
12214 | case FILEIO_ENODEV: | |
12215 | return ENODEV; | |
12216 | case FILEIO_ENOTDIR: | |
12217 | return ENOTDIR; | |
12218 | case FILEIO_EISDIR: | |
12219 | return EISDIR; | |
12220 | case FILEIO_EINVAL: | |
12221 | return EINVAL; | |
12222 | case FILEIO_ENFILE: | |
12223 | return ENFILE; | |
12224 | case FILEIO_EMFILE: | |
12225 | return EMFILE; | |
12226 | case FILEIO_EFBIG: | |
12227 | return EFBIG; | |
12228 | case FILEIO_ENOSPC: | |
12229 | return ENOSPC; | |
12230 | case FILEIO_ESPIPE: | |
12231 | return ESPIPE; | |
12232 | case FILEIO_EROFS: | |
12233 | return EROFS; | |
12234 | case FILEIO_ENOSYS: | |
12235 | return ENOSYS; | |
12236 | case FILEIO_ENAMETOOLONG: | |
12237 | return ENAMETOOLONG; | |
12238 | } | |
12239 | return -1; | |
12240 | } | |
12241 | ||
12242 | static char * | |
12243 | remote_hostio_error (int errnum) | |
12244 | { | |
12245 | int host_error = remote_fileio_errno_to_host (errnum); | |
12246 | ||
12247 | if (host_error == -1) | |
12248 | error (_("Unknown remote I/O error %d"), errnum); | |
12249 | else | |
12250 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12251 | } | |
12252 | ||
440b7aec PA |
12253 | /* A RAII wrapper around a remote file descriptor. */ |
12254 | ||
12255 | class scoped_remote_fd | |
a6b151f1 | 12256 | { |
440b7aec PA |
12257 | public: |
12258 | explicit scoped_remote_fd (int fd) | |
12259 | : m_fd (fd) | |
12260 | { | |
12261 | } | |
a6b151f1 | 12262 | |
440b7aec PA |
12263 | ~scoped_remote_fd () |
12264 | { | |
12265 | if (m_fd != -1) | |
12266 | { | |
12267 | try | |
12268 | { | |
12269 | int remote_errno; | |
12270 | remote_hostio_close (find_target_at (process_stratum), | |
12271 | m_fd, &remote_errno); | |
12272 | } | |
12273 | catch (...) | |
12274 | { | |
12275 | /* Swallow exception before it escapes the dtor. If | |
12276 | something goes wrong, likely the connection is gone, | |
12277 | and there's nothing else that can be done. */ | |
12278 | } | |
12279 | } | |
12280 | } | |
12281 | ||
12282 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12283 | ||
12284 | /* Release ownership of the file descriptor, and return it. */ | |
12285 | int release () noexcept | |
12286 | { | |
12287 | int fd = m_fd; | |
12288 | m_fd = -1; | |
12289 | return fd; | |
12290 | } | |
12291 | ||
12292 | /* Return the owned file descriptor. */ | |
12293 | int get () const noexcept | |
12294 | { | |
12295 | return m_fd; | |
12296 | } | |
12297 | ||
12298 | private: | |
12299 | /* The owned remote I/O file descriptor. */ | |
12300 | int m_fd; | |
12301 | }; | |
a6b151f1 DJ |
12302 | |
12303 | void | |
12304 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
12305 | { | |
440b7aec PA |
12306 | struct cleanup *back_to; |
12307 | int retcode, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
12308 | gdb_byte *buffer; |
12309 | int bytes_in_buffer; | |
12310 | int saw_eof; | |
12311 | ULONGEST offset; | |
5d93a237 | 12312 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12313 | |
5d93a237 | 12314 | if (!rs->remote_desc) |
a6b151f1 DJ |
12315 | error (_("command can only be used with remote target")); |
12316 | ||
d419f42d | 12317 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12318 | if (file == NULL) |
12319 | perror_with_name (local_file); | |
a6b151f1 | 12320 | |
440b7aec PA |
12321 | scoped_remote_fd fd |
12322 | (remote_hostio_open (find_target_at (process_stratum), NULL, | |
12323 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12324 | | FILEIO_O_TRUNC), | |
12325 | 0700, 0, &remote_errno)); | |
12326 | if (fd.get () == -1) | |
a6b151f1 DJ |
12327 | remote_hostio_error (remote_errno); |
12328 | ||
12329 | /* Send up to this many bytes at once. They won't all fit in the | |
12330 | remote packet limit, so we'll transfer slightly fewer. */ | |
12331 | io_size = get_remote_packet_size (); | |
224c3ddb | 12332 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12333 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 | 12334 | |
a6b151f1 DJ |
12335 | bytes_in_buffer = 0; |
12336 | saw_eof = 0; | |
12337 | offset = 0; | |
12338 | while (bytes_in_buffer || !saw_eof) | |
12339 | { | |
12340 | if (!saw_eof) | |
12341 | { | |
3e43a32a MS |
12342 | bytes = fread (buffer + bytes_in_buffer, 1, |
12343 | io_size - bytes_in_buffer, | |
d419f42d | 12344 | file.get ()); |
a6b151f1 DJ |
12345 | if (bytes == 0) |
12346 | { | |
d419f42d | 12347 | if (ferror (file.get ())) |
a6b151f1 DJ |
12348 | error (_("Error reading %s."), local_file); |
12349 | else | |
12350 | { | |
12351 | /* EOF. Unless there is something still in the | |
12352 | buffer from the last iteration, we are done. */ | |
12353 | saw_eof = 1; | |
12354 | if (bytes_in_buffer == 0) | |
12355 | break; | |
12356 | } | |
12357 | } | |
12358 | } | |
12359 | else | |
12360 | bytes = 0; | |
12361 | ||
12362 | bytes += bytes_in_buffer; | |
12363 | bytes_in_buffer = 0; | |
12364 | ||
0d866f62 | 12365 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
440b7aec | 12366 | fd.get (), buffer, bytes, |
3e43a32a | 12367 | offset, &remote_errno); |
a6b151f1 DJ |
12368 | |
12369 | if (retcode < 0) | |
12370 | remote_hostio_error (remote_errno); | |
12371 | else if (retcode == 0) | |
12372 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12373 | else if (retcode < bytes) | |
12374 | { | |
12375 | /* Short write. Save the rest of the read data for the next | |
12376 | write. */ | |
12377 | bytes_in_buffer = bytes - retcode; | |
12378 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
12379 | } | |
12380 | ||
12381 | offset += retcode; | |
12382 | } | |
12383 | ||
440b7aec PA |
12384 | if (remote_hostio_close (find_target_at (process_stratum), |
12385 | fd.release (), &remote_errno)) | |
a6b151f1 DJ |
12386 | remote_hostio_error (remote_errno); |
12387 | ||
12388 | if (from_tty) | |
12389 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
12390 | do_cleanups (back_to); | |
12391 | } | |
12392 | ||
12393 | void | |
12394 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
12395 | { | |
440b7aec PA |
12396 | struct cleanup *back_to; |
12397 | int remote_errno, bytes, io_size; | |
a6b151f1 DJ |
12398 | gdb_byte *buffer; |
12399 | ULONGEST offset; | |
5d93a237 | 12400 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12401 | |
5d93a237 | 12402 | if (!rs->remote_desc) |
a6b151f1 DJ |
12403 | error (_("command can only be used with remote target")); |
12404 | ||
440b7aec PA |
12405 | scoped_remote_fd fd |
12406 | (remote_hostio_open (find_target_at (process_stratum), NULL, | |
12407 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12408 | &remote_errno)); | |
12409 | if (fd.get () == -1) | |
a6b151f1 DJ |
12410 | remote_hostio_error (remote_errno); |
12411 | ||
d419f42d | 12412 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12413 | if (file == NULL) |
12414 | perror_with_name (local_file); | |
a6b151f1 DJ |
12415 | |
12416 | /* Send up to this many bytes at once. They won't all fit in the | |
12417 | remote packet limit, so we'll transfer slightly fewer. */ | |
12418 | io_size = get_remote_packet_size (); | |
224c3ddb | 12419 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12420 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 | 12421 | |
a6b151f1 DJ |
12422 | offset = 0; |
12423 | while (1) | |
12424 | { | |
a3be983c | 12425 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
440b7aec PA |
12426 | fd.get (), buffer, io_size, offset, |
12427 | &remote_errno); | |
a6b151f1 DJ |
12428 | if (bytes == 0) |
12429 | /* Success, but no bytes, means end-of-file. */ | |
12430 | break; | |
12431 | if (bytes == -1) | |
12432 | remote_hostio_error (remote_errno); | |
12433 | ||
12434 | offset += bytes; | |
12435 | ||
d419f42d | 12436 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12437 | if (bytes == 0) |
12438 | perror_with_name (local_file); | |
12439 | } | |
12440 | ||
440b7aec PA |
12441 | if (remote_hostio_close (find_target_at (process_stratum), |
12442 | fd.release (), &remote_errno)) | |
a6b151f1 DJ |
12443 | remote_hostio_error (remote_errno); |
12444 | ||
12445 | if (from_tty) | |
12446 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12447 | do_cleanups (back_to); | |
12448 | } | |
12449 | ||
12450 | void | |
12451 | remote_file_delete (const char *remote_file, int from_tty) | |
12452 | { | |
12453 | int retcode, remote_errno; | |
5d93a237 | 12454 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12455 | |
5d93a237 | 12456 | if (!rs->remote_desc) |
a6b151f1 DJ |
12457 | error (_("command can only be used with remote target")); |
12458 | ||
dbbca37d | 12459 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12460 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12461 | if (retcode == -1) |
12462 | remote_hostio_error (remote_errno); | |
12463 | ||
12464 | if (from_tty) | |
12465 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12466 | } | |
12467 | ||
12468 | static void | |
ac88e2de | 12469 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12470 | { |
d1a41061 PP |
12471 | if (args == NULL) |
12472 | error_no_arg (_("file to put")); | |
12473 | ||
773a1edc | 12474 | gdb_argv argv (args); |
a6b151f1 DJ |
12475 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12476 | error (_("Invalid parameters to remote put")); | |
12477 | ||
12478 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12479 | } |
12480 | ||
12481 | static void | |
ac88e2de | 12482 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12483 | { |
d1a41061 PP |
12484 | if (args == NULL) |
12485 | error_no_arg (_("file to get")); | |
12486 | ||
773a1edc | 12487 | gdb_argv argv (args); |
a6b151f1 DJ |
12488 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12489 | error (_("Invalid parameters to remote get")); | |
12490 | ||
12491 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12492 | } |
12493 | ||
12494 | static void | |
ac88e2de | 12495 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12496 | { |
d1a41061 PP |
12497 | if (args == NULL) |
12498 | error_no_arg (_("file to delete")); | |
12499 | ||
773a1edc | 12500 | gdb_argv argv (args); |
a6b151f1 DJ |
12501 | if (argv[0] == NULL || argv[1] != NULL) |
12502 | error (_("Invalid parameters to remote delete")); | |
12503 | ||
12504 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12505 | } |
12506 | ||
12507 | static void | |
981a3fb3 | 12508 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12509 | { |
635c7e8a | 12510 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12511 | } |
12512 | ||
57810aa7 | 12513 | bool |
f6ac5f3d | 12514 | remote_target::can_execute_reverse () |
b2175913 | 12515 | { |
4082afcc PA |
12516 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12517 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12518 | return true; |
40ab02ce | 12519 | else |
57810aa7 | 12520 | return false; |
b2175913 MS |
12521 | } |
12522 | ||
57810aa7 | 12523 | bool |
f6ac5f3d | 12524 | remote_target::supports_non_stop () |
74531fed | 12525 | { |
57810aa7 | 12526 | return true; |
74531fed PA |
12527 | } |
12528 | ||
57810aa7 | 12529 | bool |
f6ac5f3d | 12530 | remote_target::supports_disable_randomization () |
03583c20 UW |
12531 | { |
12532 | /* Only supported in extended mode. */ | |
57810aa7 | 12533 | return false; |
03583c20 UW |
12534 | } |
12535 | ||
57810aa7 | 12536 | bool |
f6ac5f3d | 12537 | remote_target::supports_multi_process () |
8a305172 PA |
12538 | { |
12539 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12540 | |
8020350c | 12541 | return remote_multi_process_p (rs); |
8a305172 PA |
12542 | } |
12543 | ||
70221824 | 12544 | static int |
f6ac5f3d | 12545 | remote_supports_cond_tracepoints () |
782b2b07 | 12546 | { |
4082afcc | 12547 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12548 | } |
12549 | ||
57810aa7 | 12550 | bool |
f6ac5f3d | 12551 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12552 | { |
4082afcc | 12553 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12554 | } |
12555 | ||
70221824 | 12556 | static int |
f6ac5f3d | 12557 | remote_supports_fast_tracepoints () |
7a697b8d | 12558 | { |
4082afcc | 12559 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12560 | } |
12561 | ||
0fb4aa4b | 12562 | static int |
f6ac5f3d | 12563 | remote_supports_static_tracepoints () |
0fb4aa4b | 12564 | { |
4082afcc | 12565 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12566 | } |
12567 | ||
1e4d1764 | 12568 | static int |
f6ac5f3d | 12569 | remote_supports_install_in_trace () |
1e4d1764 | 12570 | { |
4082afcc | 12571 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12572 | } |
12573 | ||
57810aa7 | 12574 | bool |
f6ac5f3d | 12575 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12576 | { |
4082afcc PA |
12577 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12578 | == PACKET_ENABLE); | |
d248b706 KY |
12579 | } |
12580 | ||
57810aa7 | 12581 | bool |
f6ac5f3d | 12582 | remote_target::supports_string_tracing () |
3065dfb6 | 12583 | { |
4082afcc | 12584 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12585 | } |
12586 | ||
57810aa7 | 12587 | bool |
f6ac5f3d | 12588 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12589 | { |
4082afcc | 12590 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12591 | } |
12592 | ||
f6ac5f3d PA |
12593 | void |
12594 | remote_target::trace_init () | |
35b1e5cc | 12595 | { |
b6bb3468 PA |
12596 | struct remote_state *rs = get_remote_state (); |
12597 | ||
35b1e5cc | 12598 | putpkt ("QTinit"); |
b6bb3468 PA |
12599 | remote_get_noisy_reply (); |
12600 | if (strcmp (rs->buf, "OK") != 0) | |
35b1e5cc SS |
12601 | error (_("Target does not support this command.")); |
12602 | } | |
12603 | ||
409873ef SS |
12604 | /* Recursive routine to walk through command list including loops, and |
12605 | download packets for each command. */ | |
12606 | ||
12607 | static void | |
12608 | remote_download_command_source (int num, ULONGEST addr, | |
12609 | struct command_line *cmds) | |
12610 | { | |
12611 | struct remote_state *rs = get_remote_state (); | |
12612 | struct command_line *cmd; | |
12613 | ||
12614 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12615 | { | |
0df8b418 | 12616 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12617 | strcpy (rs->buf, "QTDPsrc:"); |
12618 | encode_source_string (num, addr, "cmd", cmd->line, | |
12619 | rs->buf + strlen (rs->buf), | |
12620 | rs->buf_size - strlen (rs->buf)); | |
12621 | putpkt (rs->buf); | |
b6bb3468 PA |
12622 | remote_get_noisy_reply (); |
12623 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12624 | warning (_("Target does not support source download.")); |
12625 | ||
12626 | if (cmd->control_type == while_control | |
12627 | || cmd->control_type == while_stepping_control) | |
12628 | { | |
12973681 | 12629 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12630 | |
0df8b418 | 12631 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12632 | strcpy (rs->buf, "QTDPsrc:"); |
12633 | encode_source_string (num, addr, "cmd", "end", | |
12634 | rs->buf + strlen (rs->buf), | |
12635 | rs->buf_size - strlen (rs->buf)); | |
12636 | putpkt (rs->buf); | |
b6bb3468 PA |
12637 | remote_get_noisy_reply (); |
12638 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12639 | warning (_("Target does not support source download.")); |
12640 | } | |
12641 | } | |
12642 | } | |
12643 | ||
f6ac5f3d PA |
12644 | void |
12645 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc | 12646 | { |
bba74b36 | 12647 | #define BUF_SIZE 2048 |
e8ba3115 | 12648 | |
35b1e5cc | 12649 | CORE_ADDR tpaddr; |
409873ef | 12650 | char addrbuf[40]; |
bba74b36 | 12651 | char buf[BUF_SIZE]; |
b44ec619 SM |
12652 | std::vector<std::string> tdp_actions; |
12653 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12654 | char *pkt; |
e8ba3115 | 12655 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12656 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12657 | struct remote_state *rs = get_remote_state (); |
35b1e5cc | 12658 | |
dc673c81 | 12659 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12660 | |
12661 | tpaddr = loc->address; | |
12662 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12663 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12664 | addrbuf, /* address */ | |
12665 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12666 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12667 | /* Fast tracepoints are mostly handled by the target, but we can |
12668 | tell the target how big of an instruction block should be moved | |
12669 | around. */ | |
12670 | if (b->type == bp_fast_tracepoint) | |
12671 | { | |
12672 | /* Only test for support at download time; we may not know | |
12673 | target capabilities at definition time. */ | |
12674 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12675 | { |
6b940e6a PL |
12676 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12677 | NULL)) | |
bba74b36 | 12678 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12679 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12680 | else |
e8ba3115 YQ |
12681 | /* If it passed validation at definition but fails now, |
12682 | something is very wrong. */ | |
12683 | internal_error (__FILE__, __LINE__, | |
12684 | _("Fast tracepoint not " | |
12685 | "valid during download")); | |
35b1e5cc | 12686 | } |
e8ba3115 YQ |
12687 | else |
12688 | /* Fast tracepoints are functionally identical to regular | |
12689 | tracepoints, so don't take lack of support as a reason to | |
12690 | give up on the trace run. */ | |
12691 | warning (_("Target does not support fast tracepoints, " | |
12692 | "downloading %d as regular tracepoint"), b->number); | |
12693 | } | |
12694 | else if (b->type == bp_static_tracepoint) | |
12695 | { | |
12696 | /* Only test for support at download time; we may not know | |
12697 | target capabilities at definition time. */ | |
12698 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12699 | { |
e8ba3115 | 12700 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12701 | |
e8ba3115 YQ |
12702 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12703 | strcat (buf, ":S"); | |
0fb4aa4b | 12704 | else |
e8ba3115 | 12705 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12706 | } |
e8ba3115 YQ |
12707 | else |
12708 | /* Fast tracepoints are functionally identical to regular | |
12709 | tracepoints, so don't take lack of support as a reason | |
12710 | to give up on the trace run. */ | |
12711 | error (_("Target does not support static tracepoints")); | |
12712 | } | |
12713 | /* If the tracepoint has a conditional, make it into an agent | |
12714 | expression and append to the definition. */ | |
12715 | if (loc->cond) | |
12716 | { | |
12717 | /* Only test support at download time, we may not know target | |
12718 | capabilities at definition time. */ | |
12719 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12720 | { |
833177a4 | 12721 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12722 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12723 | aexpr->len); | |
e8ba3115 | 12724 | pkt = buf + strlen (buf); |
b44ec619 | 12725 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12726 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12727 | *pkt = '\0'; | |
35b1e5cc | 12728 | } |
e8ba3115 YQ |
12729 | else |
12730 | warning (_("Target does not support conditional tracepoints, " | |
12731 | "ignoring tp %d cond"), b->number); | |
12732 | } | |
35b1e5cc | 12733 | |
d9b3f62e | 12734 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12735 | strcat (buf, "-"); |
12736 | putpkt (buf); | |
b6bb3468 PA |
12737 | remote_get_noisy_reply (); |
12738 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12739 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12740 | |
e8ba3115 | 12741 | /* do_single_steps (t); */ |
b44ec619 SM |
12742 | for (auto action_it = tdp_actions.begin (); |
12743 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12744 | { |
b44ec619 SM |
12745 | QUIT; /* Allow user to bail out with ^C. */ |
12746 | ||
12747 | bool has_more = (action_it != tdp_actions.end () | |
12748 | || !stepping_actions.empty ()); | |
12749 | ||
12750 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", | |
12751 | b->number, addrbuf, /* address */ | |
12752 | action_it->c_str (), | |
12753 | has_more ? '-' : 0); | |
12754 | putpkt (buf); | |
12755 | remote_get_noisy_reply (); | |
12756 | if (strcmp (rs->buf, "OK")) | |
12757 | error (_("Error on target while setting tracepoints.")); | |
e8ba3115 | 12758 | } |
409873ef | 12759 | |
b44ec619 SM |
12760 | for (auto action_it = stepping_actions.begin (); |
12761 | action_it != stepping_actions.end (); action_it++) | |
12762 | { | |
12763 | QUIT; /* Allow user to bail out with ^C. */ | |
12764 | ||
12765 | bool is_first = action_it == stepping_actions.begin (); | |
12766 | bool has_more = action_it != stepping_actions.end (); | |
12767 | ||
12768 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", | |
12769 | b->number, addrbuf, /* address */ | |
12770 | is_first ? "S" : "", | |
12771 | action_it->c_str (), | |
12772 | has_more ? "-" : ""); | |
12773 | putpkt (buf); | |
12774 | remote_get_noisy_reply (); | |
12775 | if (strcmp (rs->buf, "OK")) | |
12776 | error (_("Error on target while setting tracepoints.")); | |
12777 | } | |
12778 | ||
4082afcc | 12779 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12780 | { |
f00aae0f | 12781 | if (b->location != NULL) |
409873ef | 12782 | { |
e8ba3115 | 12783 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12784 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12785 | event_location_to_string (b->location.get ()), |
f00aae0f | 12786 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 | 12787 | putpkt (buf); |
b6bb3468 PA |
12788 | remote_get_noisy_reply (); |
12789 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12790 | warning (_("Target does not support source download.")); |
409873ef | 12791 | } |
e8ba3115 YQ |
12792 | if (b->cond_string) |
12793 | { | |
12794 | strcpy (buf, "QTDPsrc:"); | |
12795 | encode_source_string (b->number, loc->address, | |
12796 | "cond", b->cond_string, buf + strlen (buf), | |
12797 | 2048 - strlen (buf)); | |
12798 | putpkt (buf); | |
b6bb3468 PA |
12799 | remote_get_noisy_reply (); |
12800 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 YQ |
12801 | warning (_("Target does not support source download.")); |
12802 | } | |
12803 | remote_download_command_source (b->number, loc->address, | |
12804 | breakpoint_commands (b)); | |
35b1e5cc | 12805 | } |
35b1e5cc SS |
12806 | } |
12807 | ||
57810aa7 | 12808 | bool |
f6ac5f3d | 12809 | remote_target::can_download_tracepoint () |
1e4d1764 | 12810 | { |
1e51243a PA |
12811 | struct remote_state *rs = get_remote_state (); |
12812 | struct trace_status *ts; | |
12813 | int status; | |
12814 | ||
12815 | /* Don't try to install tracepoints until we've relocated our | |
12816 | symbols, and fetched and merged the target's tracepoint list with | |
12817 | ours. */ | |
12818 | if (rs->starting_up) | |
57810aa7 | 12819 | return false; |
1e51243a PA |
12820 | |
12821 | ts = current_trace_status (); | |
f6ac5f3d | 12822 | status = get_trace_status (ts); |
1e4d1764 YQ |
12823 | |
12824 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 12825 | return false; |
1e4d1764 YQ |
12826 | |
12827 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12828 | installing tracepoint in trace, we have to return. */ | |
12829 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 12830 | return false; |
1e4d1764 | 12831 | |
57810aa7 | 12832 | return true; |
1e4d1764 YQ |
12833 | } |
12834 | ||
12835 | ||
f6ac5f3d PA |
12836 | void |
12837 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
12838 | { |
12839 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12840 | char *p; |
35b1e5cc | 12841 | |
bba74b36 | 12842 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
12843 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
12844 | tsv.builtin); | |
00bf0b85 | 12845 | p = rs->buf + strlen (rs->buf); |
c252925c | 12846 | if ((p - rs->buf) + tsv.name.length () * 2 >= get_remote_packet_size ()) |
00bf0b85 | 12847 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 12848 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 12849 | *p++ = '\0'; |
35b1e5cc | 12850 | putpkt (rs->buf); |
b6bb3468 PA |
12851 | remote_get_noisy_reply (); |
12852 | if (*rs->buf == '\0') | |
ad91cd99 | 12853 | error (_("Target does not support this command.")); |
b6bb3468 | 12854 | if (strcmp (rs->buf, "OK") != 0) |
ad91cd99 | 12855 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
12856 | } |
12857 | ||
f6ac5f3d PA |
12858 | void |
12859 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
12860 | { |
12861 | struct remote_state *rs = get_remote_state (); | |
12862 | char addr_buf[40]; | |
12863 | ||
12864 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12865 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12866 | location->owner->number, addr_buf); | |
d248b706 | 12867 | putpkt (rs->buf); |
b6bb3468 | 12868 | remote_get_noisy_reply (); |
d248b706 KY |
12869 | if (*rs->buf == '\0') |
12870 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12871 | if (strcmp (rs->buf, "OK") != 0) | |
12872 | error (_("Error on target while enabling tracepoint.")); | |
12873 | } | |
12874 | ||
f6ac5f3d PA |
12875 | void |
12876 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
12877 | { |
12878 | struct remote_state *rs = get_remote_state (); | |
12879 | char addr_buf[40]; | |
12880 | ||
12881 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12882 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12883 | location->owner->number, addr_buf); | |
d248b706 | 12884 | putpkt (rs->buf); |
b6bb3468 | 12885 | remote_get_noisy_reply (); |
d248b706 KY |
12886 | if (*rs->buf == '\0') |
12887 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12888 | if (strcmp (rs->buf, "OK") != 0) | |
12889 | error (_("Error on target while disabling tracepoint.")); | |
12890 | } | |
12891 | ||
f6ac5f3d PA |
12892 | void |
12893 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
12894 | { |
12895 | asection *s; | |
81b9b86e | 12896 | bfd *abfd = NULL; |
35b1e5cc | 12897 | bfd_size_type size; |
608bcef2 | 12898 | bfd_vma vma; |
35b1e5cc | 12899 | int anysecs = 0; |
c2fa21f1 | 12900 | int offset = 0; |
35b1e5cc SS |
12901 | |
12902 | if (!exec_bfd) | |
12903 | return; /* No information to give. */ | |
12904 | ||
b6bb3468 PA |
12905 | struct remote_state *rs = get_remote_state (); |
12906 | ||
12907 | strcpy (rs->buf, "QTro"); | |
12908 | offset = strlen (rs->buf); | |
35b1e5cc SS |
12909 | for (s = exec_bfd->sections; s; s = s->next) |
12910 | { | |
12911 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12912 | int sec_length; |
35b1e5cc SS |
12913 | |
12914 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12915 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12916 | (s->flags & SEC_READONLY) == 0) |
12917 | continue; | |
12918 | ||
12919 | anysecs = 1; | |
81b9b86e | 12920 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12921 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12922 | sprintf_vma (tmp1, vma); |
12923 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 12924 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
b6bb3468 | 12925 | if (offset + sec_length + 1 > rs->buf_size) |
c2fa21f1 | 12926 | { |
4082afcc | 12927 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12928 | warning (_("\ |
c2fa21f1 HZ |
12929 | Too many sections for read-only sections definition packet.")); |
12930 | break; | |
12931 | } | |
b6bb3468 | 12932 | xsnprintf (rs->buf + offset, rs->buf_size - offset, ":%s,%s", |
bba74b36 | 12933 | tmp1, tmp2); |
c2fa21f1 | 12934 | offset += sec_length; |
35b1e5cc SS |
12935 | } |
12936 | if (anysecs) | |
12937 | { | |
b6bb3468 PA |
12938 | putpkt (rs->buf); |
12939 | getpkt (&rs->buf, &rs->buf_size, 0); | |
35b1e5cc SS |
12940 | } |
12941 | } | |
12942 | ||
f6ac5f3d PA |
12943 | void |
12944 | remote_target::trace_start () | |
35b1e5cc | 12945 | { |
b6bb3468 PA |
12946 | struct remote_state *rs = get_remote_state (); |
12947 | ||
35b1e5cc | 12948 | putpkt ("QTStart"); |
b6bb3468 PA |
12949 | remote_get_noisy_reply (); |
12950 | if (*rs->buf == '\0') | |
ad91cd99 | 12951 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12952 | if (strcmp (rs->buf, "OK") != 0) |
12953 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12954 | } |
12955 | ||
f6ac5f3d PA |
12956 | int |
12957 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 12958 | { |
953b98d1 | 12959 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12960 | char *p = NULL; |
0df8b418 | 12961 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12962 | extern int trace_regblock_size; |
bd3eecc3 | 12963 | enum packet_result result; |
b6bb3468 | 12964 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 12965 | |
4082afcc | 12966 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12967 | return -1; |
a744cf53 | 12968 | |
5cd63fda | 12969 | trace_regblock_size |
9d6eea31 | 12970 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 12971 | |
049dc89b JK |
12972 | putpkt ("qTStatus"); |
12973 | ||
492d29ea | 12974 | TRY |
67f41397 | 12975 | { |
b6bb3468 | 12976 | p = remote_get_noisy_reply (); |
67f41397 | 12977 | } |
492d29ea | 12978 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12979 | { |
598d3636 JK |
12980 | if (ex.error != TARGET_CLOSE_ERROR) |
12981 | { | |
12982 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12983 | return -1; | |
12984 | } | |
12985 | throw_exception (ex); | |
67f41397 | 12986 | } |
492d29ea | 12987 | END_CATCH |
00bf0b85 | 12988 | |
bd3eecc3 PA |
12989 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12990 | ||
00bf0b85 | 12991 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12992 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12993 | return -1; |
35b1e5cc | 12994 | |
00bf0b85 | 12995 | /* We're working with a live target. */ |
f5911ea1 | 12996 | ts->filename = NULL; |
00bf0b85 | 12997 | |
00bf0b85 | 12998 | if (*p++ != 'T') |
b6bb3468 | 12999 | error (_("Bogus trace status reply from target: %s"), rs->buf); |
35b1e5cc | 13000 | |
84cebc4a YQ |
13001 | /* Function 'parse_trace_status' sets default value of each field of |
13002 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13003 | parse_trace_status (p, ts); |
13004 | ||
13005 | return ts->running; | |
35b1e5cc SS |
13006 | } |
13007 | ||
f6ac5f3d PA |
13008 | void |
13009 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13010 | struct uploaded_tp *utp) | |
f196051f SS |
13011 | { |
13012 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13013 | char *reply; |
13014 | struct bp_location *loc; | |
13015 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13016 | size_t size = get_remote_packet_size (); |
f196051f SS |
13017 | |
13018 | if (tp) | |
13019 | { | |
c1fc2657 | 13020 | tp->hit_count = 0; |
f196051f | 13021 | tp->traceframe_usage = 0; |
c1fc2657 | 13022 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13023 | { |
13024 | /* If the tracepoint was never downloaded, don't go asking for | |
13025 | any status. */ | |
13026 | if (tp->number_on_target == 0) | |
13027 | continue; | |
bba74b36 YQ |
13028 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
13029 | phex_nz (loc->address, 0)); | |
f196051f | 13030 | putpkt (rs->buf); |
b6bb3468 | 13031 | reply = remote_get_noisy_reply (); |
f196051f SS |
13032 | if (reply && *reply) |
13033 | { | |
13034 | if (*reply == 'V') | |
13035 | parse_tracepoint_status (reply + 1, bp, utp); | |
13036 | } | |
13037 | } | |
13038 | } | |
13039 | else if (utp) | |
13040 | { | |
13041 | utp->hit_count = 0; | |
13042 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
13043 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
13044 | phex_nz (utp->addr, 0)); | |
f196051f | 13045 | putpkt (rs->buf); |
b6bb3468 | 13046 | reply = remote_get_noisy_reply (); |
f196051f SS |
13047 | if (reply && *reply) |
13048 | { | |
13049 | if (*reply == 'V') | |
13050 | parse_tracepoint_status (reply + 1, bp, utp); | |
13051 | } | |
13052 | } | |
13053 | } | |
13054 | ||
f6ac5f3d PA |
13055 | void |
13056 | remote_target::trace_stop () | |
35b1e5cc | 13057 | { |
b6bb3468 PA |
13058 | struct remote_state *rs = get_remote_state (); |
13059 | ||
35b1e5cc | 13060 | putpkt ("QTStop"); |
b6bb3468 PA |
13061 | remote_get_noisy_reply (); |
13062 | if (*rs->buf == '\0') | |
ad91cd99 | 13063 | error (_("Target does not support this command.")); |
b6bb3468 PA |
13064 | if (strcmp (rs->buf, "OK") != 0) |
13065 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
13066 | } |
13067 | ||
f6ac5f3d PA |
13068 | int |
13069 | remote_target::trace_find (enum trace_find_type type, int num, | |
13070 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13071 | int *tpp) | |
35b1e5cc SS |
13072 | { |
13073 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 13074 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
13075 | char *p, *reply; |
13076 | int target_frameno = -1, target_tracept = -1; | |
13077 | ||
e6e4e701 PA |
13078 | /* Lookups other than by absolute frame number depend on the current |
13079 | trace selected, so make sure it is correct on the remote end | |
13080 | first. */ | |
13081 | if (type != tfind_number) | |
13082 | set_remote_traceframe (); | |
13083 | ||
35b1e5cc SS |
13084 | p = rs->buf; |
13085 | strcpy (p, "QTFrame:"); | |
13086 | p = strchr (p, '\0'); | |
13087 | switch (type) | |
13088 | { | |
13089 | case tfind_number: | |
bba74b36 | 13090 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13091 | break; |
13092 | case tfind_pc: | |
bba74b36 | 13093 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13094 | break; |
13095 | case tfind_tp: | |
bba74b36 | 13096 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13097 | break; |
13098 | case tfind_range: | |
bba74b36 YQ |
13099 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13100 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13101 | break; |
13102 | case tfind_outside: | |
bba74b36 YQ |
13103 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13104 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13105 | break; |
13106 | default: | |
9b20d036 | 13107 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13108 | } |
13109 | ||
13110 | putpkt (rs->buf); | |
b6bb3468 | 13111 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13112 | if (*reply == '\0') |
13113 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13114 | |
13115 | while (reply && *reply) | |
13116 | switch (*reply) | |
13117 | { | |
13118 | case 'F': | |
f197e0f1 VP |
13119 | p = ++reply; |
13120 | target_frameno = (int) strtol (p, &reply, 16); | |
13121 | if (reply == p) | |
13122 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13123 | /* Don't update our remote traceframe number cache on failure |
13124 | to select a remote traceframe. */ | |
f197e0f1 VP |
13125 | if (target_frameno == -1) |
13126 | return -1; | |
35b1e5cc SS |
13127 | break; |
13128 | case 'T': | |
f197e0f1 VP |
13129 | p = ++reply; |
13130 | target_tracept = (int) strtol (p, &reply, 16); | |
13131 | if (reply == p) | |
13132 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13133 | break; |
13134 | case 'O': /* "OK"? */ | |
13135 | if (reply[1] == 'K' && reply[2] == '\0') | |
13136 | reply += 2; | |
13137 | else | |
13138 | error (_("Bogus reply from target: %s"), reply); | |
13139 | break; | |
13140 | default: | |
13141 | error (_("Bogus reply from target: %s"), reply); | |
13142 | } | |
13143 | if (tpp) | |
13144 | *tpp = target_tracept; | |
e6e4e701 | 13145 | |
262e1174 | 13146 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13147 | return target_frameno; |
13148 | } | |
13149 | ||
57810aa7 | 13150 | bool |
f6ac5f3d | 13151 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13152 | { |
13153 | struct remote_state *rs = get_remote_state (); | |
13154 | char *reply; | |
13155 | ULONGEST uval; | |
13156 | ||
e6e4e701 PA |
13157 | set_remote_traceframe (); |
13158 | ||
bba74b36 | 13159 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13160 | putpkt (rs->buf); |
b6bb3468 | 13161 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13162 | if (reply && *reply) |
13163 | { | |
13164 | if (*reply == 'V') | |
13165 | { | |
13166 | unpack_varlen_hex (reply + 1, &uval); | |
13167 | *val = (LONGEST) uval; | |
57810aa7 | 13168 | return true; |
35b1e5cc SS |
13169 | } |
13170 | } | |
57810aa7 | 13171 | return false; |
35b1e5cc SS |
13172 | } |
13173 | ||
f6ac5f3d PA |
13174 | int |
13175 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13176 | { |
13177 | struct remote_state *rs = get_remote_state (); | |
13178 | char *p, *reply; | |
13179 | ||
13180 | p = rs->buf; | |
13181 | strcpy (p, "QTSave:"); | |
13182 | p += strlen (p); | |
13183 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
13184 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 13185 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13186 | *p++ = '\0'; |
13187 | putpkt (rs->buf); | |
b6bb3468 | 13188 | reply = remote_get_noisy_reply (); |
d6c5869f | 13189 | if (*reply == '\0') |
ad91cd99 PA |
13190 | error (_("Target does not support this command.")); |
13191 | if (strcmp (reply, "OK") != 0) | |
13192 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13193 | return 0; |
13194 | } | |
13195 | ||
13196 | /* This is basically a memory transfer, but needs to be its own packet | |
13197 | because we don't know how the target actually organizes its trace | |
13198 | memory, plus we want to be able to ask for as much as possible, but | |
13199 | not be unhappy if we don't get as much as we ask for. */ | |
13200 | ||
f6ac5f3d PA |
13201 | LONGEST |
13202 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13203 | { |
13204 | struct remote_state *rs = get_remote_state (); | |
13205 | char *reply; | |
13206 | char *p; | |
13207 | int rslt; | |
13208 | ||
13209 | p = rs->buf; | |
13210 | strcpy (p, "qTBuffer:"); | |
13211 | p += strlen (p); | |
13212 | p += hexnumstr (p, offset); | |
13213 | *p++ = ','; | |
13214 | p += hexnumstr (p, len); | |
13215 | *p++ = '\0'; | |
13216 | ||
13217 | putpkt (rs->buf); | |
b6bb3468 | 13218 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13219 | if (reply && *reply) |
13220 | { | |
13221 | /* 'l' by itself means we're at the end of the buffer and | |
13222 | there is nothing more to get. */ | |
13223 | if (*reply == 'l') | |
13224 | return 0; | |
13225 | ||
13226 | /* Convert the reply into binary. Limit the number of bytes to | |
13227 | convert according to our passed-in buffer size, rather than | |
13228 | what was returned in the packet; if the target is | |
13229 | unexpectedly generous and gives us a bigger reply than we | |
13230 | asked for, we don't want to crash. */ | |
b6bb3468 | 13231 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13232 | return rslt; |
13233 | } | |
13234 | ||
13235 | /* Something went wrong, flag as an error. */ | |
13236 | return -1; | |
13237 | } | |
13238 | ||
f6ac5f3d PA |
13239 | void |
13240 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13241 | { |
13242 | struct remote_state *rs = get_remote_state (); | |
13243 | ||
4082afcc | 13244 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13245 | { |
ad91cd99 PA |
13246 | char *reply; |
13247 | ||
bba74b36 | 13248 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 13249 | putpkt (rs->buf); |
b6bb3468 | 13250 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13251 | if (*reply == '\0') |
33da3f1c | 13252 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13253 | if (strcmp (reply, "OK") != 0) |
13254 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13255 | } |
13256 | else if (val) | |
13257 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13258 | } |
13259 | ||
f6ac5f3d PA |
13260 | int |
13261 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c VP |
13262 | { |
13263 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 13264 | |
7aabaf9d SM |
13265 | if (info != NULL && info->priv != NULL) |
13266 | return get_remote_thread_info (info)->core; | |
13267 | ||
dc146f7c VP |
13268 | return -1; |
13269 | } | |
13270 | ||
f6ac5f3d PA |
13271 | void |
13272 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13273 | { |
13274 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13275 | char *reply; |
4daf5ac0 | 13276 | |
bba74b36 | 13277 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 13278 | putpkt (rs->buf); |
b6bb3468 | 13279 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13280 | if (*reply == '\0') |
4daf5ac0 | 13281 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13282 | if (strcmp (reply, "OK") != 0) |
13283 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13284 | } |
13285 | ||
f6ac5f3d PA |
13286 | traceframe_info_up |
13287 | remote_target::traceframe_info () | |
b3b9301e | 13288 | { |
9018be22 | 13289 | gdb::optional<gdb::char_vector> text |
f6ac5f3d | 13290 | = target_read_stralloc (target_stack, TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13291 | NULL); |
9018be22 SM |
13292 | if (text) |
13293 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13294 | |
13295 | return NULL; | |
13296 | } | |
13297 | ||
405f8e94 SS |
13298 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13299 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13300 | if the packet is not supported, and 0 if the minimum instruction | |
13301 | length is unknown. */ | |
13302 | ||
f6ac5f3d PA |
13303 | int |
13304 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13305 | { |
13306 | struct remote_state *rs = get_remote_state (); | |
13307 | char *reply; | |
13308 | ||
e886a173 PA |
13309 | /* If we're not debugging a process yet, the IPA can't be |
13310 | loaded. */ | |
13311 | if (!target_has_execution) | |
13312 | return 0; | |
13313 | ||
13314 | /* Make sure the remote is pointing at the right process. */ | |
13315 | set_general_process (); | |
13316 | ||
bba74b36 | 13317 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13318 | putpkt (rs->buf); |
b6bb3468 | 13319 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13320 | if (*reply == '\0') |
13321 | return -1; | |
13322 | else | |
13323 | { | |
13324 | ULONGEST min_insn_len; | |
13325 | ||
13326 | unpack_varlen_hex (reply, &min_insn_len); | |
13327 | ||
13328 | return (int) min_insn_len; | |
13329 | } | |
13330 | } | |
13331 | ||
f6ac5f3d PA |
13332 | void |
13333 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13334 | { |
4082afcc | 13335 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13336 | { |
13337 | struct remote_state *rs = get_remote_state (); | |
13338 | char *buf = rs->buf; | |
13339 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13340 | enum packet_result result; | |
13341 | ||
13342 | gdb_assert (val >= 0 || val == -1); | |
13343 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13344 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13345 | if (val < 0) | |
13346 | { | |
13347 | *buf++ = '-'; | |
13348 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13349 | } | |
13350 | else | |
13351 | buf += hexnumstr (buf, (ULONGEST) val); | |
13352 | ||
13353 | putpkt (rs->buf); | |
b6bb3468 | 13354 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13355 | result = packet_ok (rs->buf, |
13356 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13357 | ||
13358 | if (result != PACKET_OK) | |
13359 | warning (_("Bogus reply from target: %s"), rs->buf); | |
13360 | } | |
13361 | } | |
13362 | ||
57810aa7 | 13363 | bool |
f6ac5f3d PA |
13364 | remote_target::set_trace_notes (const char *user, const char *notes, |
13365 | const char *stop_notes) | |
f196051f SS |
13366 | { |
13367 | struct remote_state *rs = get_remote_state (); | |
13368 | char *reply; | |
13369 | char *buf = rs->buf; | |
13370 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13371 | int nbytes; | |
13372 | ||
13373 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13374 | if (user) | |
13375 | { | |
13376 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13377 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13378 | buf += 2 * nbytes; |
13379 | *buf++ = ';'; | |
13380 | } | |
13381 | if (notes) | |
13382 | { | |
13383 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13384 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13385 | buf += 2 * nbytes; |
13386 | *buf++ = ';'; | |
13387 | } | |
13388 | if (stop_notes) | |
13389 | { | |
13390 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13391 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13392 | buf += 2 * nbytes; |
13393 | *buf++ = ';'; | |
13394 | } | |
13395 | /* Ensure the buffer is terminated. */ | |
13396 | *buf = '\0'; | |
13397 | ||
13398 | putpkt (rs->buf); | |
b6bb3468 | 13399 | reply = remote_get_noisy_reply (); |
f196051f | 13400 | if (*reply == '\0') |
57810aa7 | 13401 | return false; |
f196051f SS |
13402 | |
13403 | if (strcmp (reply, "OK") != 0) | |
13404 | error (_("Bogus reply from target: %s"), reply); | |
13405 | ||
57810aa7 | 13406 | return true; |
f196051f SS |
13407 | } |
13408 | ||
57810aa7 PA |
13409 | bool |
13410 | remote_target::use_agent (bool use) | |
d1feda86 | 13411 | { |
4082afcc | 13412 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13413 | { |
13414 | struct remote_state *rs = get_remote_state (); | |
13415 | ||
13416 | /* If the stub supports QAgent. */ | |
bba74b36 | 13417 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13418 | putpkt (rs->buf); |
13419 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13420 | ||
13421 | if (strcmp (rs->buf, "OK") == 0) | |
13422 | { | |
f6ac5f3d | 13423 | ::use_agent = use; |
57810aa7 | 13424 | return true; |
d1feda86 YQ |
13425 | } |
13426 | } | |
13427 | ||
57810aa7 | 13428 | return false; |
d1feda86 YQ |
13429 | } |
13430 | ||
57810aa7 | 13431 | bool |
f6ac5f3d | 13432 | remote_target::can_use_agent () |
d1feda86 | 13433 | { |
4082afcc | 13434 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13435 | } |
13436 | ||
9accd112 MM |
13437 | struct btrace_target_info |
13438 | { | |
13439 | /* The ptid of the traced thread. */ | |
13440 | ptid_t ptid; | |
f4abbc16 MM |
13441 | |
13442 | /* The obtained branch trace configuration. */ | |
13443 | struct btrace_config conf; | |
9accd112 MM |
13444 | }; |
13445 | ||
f4abbc16 MM |
13446 | /* Reset our idea of our target's btrace configuration. */ |
13447 | ||
13448 | static void | |
13449 | remote_btrace_reset (void) | |
13450 | { | |
13451 | struct remote_state *rs = get_remote_state (); | |
13452 | ||
13453 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13454 | } | |
13455 | ||
f4abbc16 MM |
13456 | /* Synchronize the configuration with the target. */ |
13457 | ||
13458 | static void | |
13459 | btrace_sync_conf (const struct btrace_config *conf) | |
13460 | { | |
d33501a5 MM |
13461 | struct packet_config *packet; |
13462 | struct remote_state *rs; | |
13463 | char *buf, *pos, *endbuf; | |
13464 | ||
13465 | rs = get_remote_state (); | |
13466 | buf = rs->buf; | |
13467 | endbuf = buf + get_remote_packet_size (); | |
13468 | ||
13469 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13470 | if (packet_config_support (packet) == PACKET_ENABLE | |
13471 | && conf->bts.size != rs->btrace_config.bts.size) | |
13472 | { | |
13473 | pos = buf; | |
13474 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13475 | conf->bts.size); | |
13476 | ||
13477 | putpkt (buf); | |
13478 | getpkt (&buf, &rs->buf_size, 0); | |
13479 | ||
13480 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13481 | { | |
13482 | if (buf[0] == 'E' && buf[1] == '.') | |
13483 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13484 | else | |
13485 | error (_("Failed to configure the BTS buffer size.")); | |
13486 | } | |
13487 | ||
13488 | rs->btrace_config.bts.size = conf->bts.size; | |
13489 | } | |
b20a6524 MM |
13490 | |
13491 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13492 | if (packet_config_support (packet) == PACKET_ENABLE | |
13493 | && conf->pt.size != rs->btrace_config.pt.size) | |
13494 | { | |
13495 | pos = buf; | |
13496 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13497 | conf->pt.size); | |
13498 | ||
13499 | putpkt (buf); | |
13500 | getpkt (&buf, &rs->buf_size, 0); | |
13501 | ||
13502 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13503 | { | |
13504 | if (buf[0] == 'E' && buf[1] == '.') | |
13505 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13506 | else | |
13507 | error (_("Failed to configure the trace buffer size.")); | |
13508 | } | |
13509 | ||
13510 | rs->btrace_config.pt.size = conf->pt.size; | |
13511 | } | |
f4abbc16 MM |
13512 | } |
13513 | ||
13514 | /* Read the current thread's btrace configuration from the target and | |
13515 | store it into CONF. */ | |
13516 | ||
13517 | static void | |
13518 | btrace_read_config (struct btrace_config *conf) | |
13519 | { | |
9018be22 | 13520 | gdb::optional<gdb::char_vector> xml |
f6ac5f3d | 13521 | = target_read_stralloc (target_stack, TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13522 | if (xml) |
13523 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13524 | } |
13525 | ||
c0272db5 TW |
13526 | /* Maybe reopen target btrace. */ |
13527 | ||
13528 | static void | |
13529 | remote_btrace_maybe_reopen (void) | |
13530 | { | |
13531 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13532 | struct thread_info *tp; |
13533 | int btrace_target_pushed = 0; | |
13534 | int warned = 0; | |
13535 | ||
5ed8105e PA |
13536 | scoped_restore_current_thread restore_thread; |
13537 | ||
c0272db5 TW |
13538 | ALL_NON_EXITED_THREADS (tp) |
13539 | { | |
13540 | set_general_thread (tp->ptid); | |
13541 | ||
13542 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13543 | btrace_read_config (&rs->btrace_config); | |
13544 | ||
13545 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13546 | continue; | |
13547 | ||
13548 | #if !defined (HAVE_LIBIPT) | |
13549 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13550 | { | |
13551 | if (!warned) | |
13552 | { | |
13553 | warned = 1; | |
c4e12631 MM |
13554 | warning (_("Target is recording using Intel Processor Trace " |
13555 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13556 | } |
13557 | ||
13558 | continue; | |
13559 | } | |
13560 | #endif /* !defined (HAVE_LIBIPT) */ | |
13561 | ||
13562 | /* Push target, once, but before anything else happens. This way our | |
13563 | changes to the threads will be cleaned up by unpushing the target | |
13564 | in case btrace_read_config () throws. */ | |
13565 | if (!btrace_target_pushed) | |
13566 | { | |
13567 | btrace_target_pushed = 1; | |
13568 | record_btrace_push_target (); | |
13569 | printf_filtered (_("Target is recording using %s.\n"), | |
13570 | btrace_format_string (rs->btrace_config.format)); | |
13571 | } | |
13572 | ||
13573 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13574 | tp->btrace.target->ptid = tp->ptid; | |
13575 | tp->btrace.target->conf = rs->btrace_config; | |
13576 | } | |
c0272db5 TW |
13577 | } |
13578 | ||
9accd112 MM |
13579 | /* Enable branch tracing. */ |
13580 | ||
f6ac5f3d PA |
13581 | struct btrace_target_info * |
13582 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13583 | { |
13584 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13585 | struct packet_config *packet = NULL; |
9accd112 MM |
13586 | struct remote_state *rs = get_remote_state (); |
13587 | char *buf = rs->buf; | |
13588 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13589 | ||
b20a6524 MM |
13590 | switch (conf->format) |
13591 | { | |
13592 | case BTRACE_FORMAT_BTS: | |
13593 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13594 | break; | |
13595 | ||
13596 | case BTRACE_FORMAT_PT: | |
13597 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13598 | break; | |
13599 | } | |
13600 | ||
13601 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13602 | error (_("Target does not support branch tracing.")); |
13603 | ||
f4abbc16 MM |
13604 | btrace_sync_conf (conf); |
13605 | ||
9accd112 MM |
13606 | set_general_thread (ptid); |
13607 | ||
13608 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13609 | putpkt (rs->buf); | |
13610 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13611 | ||
13612 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13613 | { | |
13614 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13615 | error (_("Could not enable branch tracing for %s: %s"), | |
13616 | target_pid_to_str (ptid), rs->buf + 2); | |
13617 | else | |
13618 | error (_("Could not enable branch tracing for %s."), | |
13619 | target_pid_to_str (ptid)); | |
13620 | } | |
13621 | ||
8d749320 | 13622 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13623 | tinfo->ptid = ptid; |
13624 | ||
f4abbc16 MM |
13625 | /* If we fail to read the configuration, we lose some information, but the |
13626 | tracing itself is not impacted. */ | |
492d29ea PA |
13627 | TRY |
13628 | { | |
13629 | btrace_read_config (&tinfo->conf); | |
13630 | } | |
13631 | CATCH (err, RETURN_MASK_ERROR) | |
13632 | { | |
13633 | if (err.message != NULL) | |
13634 | warning ("%s", err.message); | |
13635 | } | |
13636 | END_CATCH | |
f4abbc16 | 13637 | |
9accd112 MM |
13638 | return tinfo; |
13639 | } | |
13640 | ||
13641 | /* Disable branch tracing. */ | |
13642 | ||
f6ac5f3d PA |
13643 | void |
13644 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13645 | { |
13646 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13647 | struct remote_state *rs = get_remote_state (); | |
13648 | char *buf = rs->buf; | |
13649 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13650 | ||
4082afcc | 13651 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13652 | error (_("Target does not support branch tracing.")); |
13653 | ||
13654 | set_general_thread (tinfo->ptid); | |
13655 | ||
13656 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13657 | putpkt (rs->buf); | |
13658 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13659 | ||
13660 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13661 | { | |
13662 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13663 | error (_("Could not disable branch tracing for %s: %s"), | |
13664 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13665 | else | |
13666 | error (_("Could not disable branch tracing for %s."), | |
13667 | target_pid_to_str (tinfo->ptid)); | |
13668 | } | |
13669 | ||
13670 | xfree (tinfo); | |
13671 | } | |
13672 | ||
13673 | /* Teardown branch tracing. */ | |
13674 | ||
f6ac5f3d PA |
13675 | void |
13676 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13677 | { |
13678 | /* We must not talk to the target during teardown. */ | |
13679 | xfree (tinfo); | |
13680 | } | |
13681 | ||
13682 | /* Read the branch trace. */ | |
13683 | ||
f6ac5f3d PA |
13684 | enum btrace_error |
13685 | remote_target::read_btrace (struct btrace_data *btrace, | |
13686 | struct btrace_target_info *tinfo, | |
13687 | enum btrace_read_type type) | |
9accd112 MM |
13688 | { |
13689 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13690 | const char *annex; |
9accd112 | 13691 | |
4082afcc | 13692 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13693 | error (_("Target does not support branch tracing.")); |
13694 | ||
13695 | #if !defined(HAVE_LIBEXPAT) | |
13696 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13697 | #endif | |
13698 | ||
13699 | switch (type) | |
13700 | { | |
864089d2 | 13701 | case BTRACE_READ_ALL: |
9accd112 MM |
13702 | annex = "all"; |
13703 | break; | |
864089d2 | 13704 | case BTRACE_READ_NEW: |
9accd112 MM |
13705 | annex = "new"; |
13706 | break; | |
969c39fb MM |
13707 | case BTRACE_READ_DELTA: |
13708 | annex = "delta"; | |
13709 | break; | |
9accd112 MM |
13710 | default: |
13711 | internal_error (__FILE__, __LINE__, | |
13712 | _("Bad branch tracing read type: %u."), | |
13713 | (unsigned int) type); | |
13714 | } | |
13715 | ||
9018be22 | 13716 | gdb::optional<gdb::char_vector> xml |
f6ac5f3d | 13717 | = target_read_stralloc (target_stack, TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13718 | if (!xml) |
969c39fb | 13719 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13720 | |
9018be22 | 13721 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13722 | |
969c39fb | 13723 | return BTRACE_ERR_NONE; |
9accd112 MM |
13724 | } |
13725 | ||
f6ac5f3d PA |
13726 | const struct btrace_config * |
13727 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
13728 | { |
13729 | return &tinfo->conf; | |
13730 | } | |
13731 | ||
57810aa7 | 13732 | bool |
f6ac5f3d | 13733 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 13734 | { |
4082afcc PA |
13735 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13736 | == PACKET_ENABLE); | |
ced63ec0 GB |
13737 | } |
13738 | ||
9dd130a0 TT |
13739 | /* Implementation of to_load. */ |
13740 | ||
f6ac5f3d PA |
13741 | void |
13742 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
13743 | { |
13744 | generic_load (name, from_tty); | |
13745 | } | |
13746 | ||
c78fa86a GB |
13747 | /* Accepts an integer PID; returns a string representing a file that |
13748 | can be opened on the remote side to get the symbols for the child | |
13749 | process. Returns NULL if the operation is not supported. */ | |
13750 | ||
f6ac5f3d PA |
13751 | char * |
13752 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 13753 | { |
9018be22 | 13754 | static gdb::optional<gdb::char_vector> filename; |
835205d0 GB |
13755 | struct inferior *inf; |
13756 | char *annex = NULL; | |
c78fa86a GB |
13757 | |
13758 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13759 | return NULL; | |
13760 | ||
835205d0 GB |
13761 | inf = find_inferior_pid (pid); |
13762 | if (inf == NULL) | |
13763 | internal_error (__FILE__, __LINE__, | |
13764 | _("not currently attached to process %d"), pid); | |
13765 | ||
13766 | if (!inf->fake_pid_p) | |
13767 | { | |
13768 | const int annex_size = 9; | |
13769 | ||
224c3ddb | 13770 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13771 | xsnprintf (annex, annex_size, "%x", pid); |
13772 | } | |
13773 | ||
f6ac5f3d | 13774 | filename = target_read_stralloc (target_stack, |
c78fa86a GB |
13775 | TARGET_OBJECT_EXEC_FILE, annex); |
13776 | ||
9018be22 | 13777 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
13778 | } |
13779 | ||
750ce8d1 YQ |
13780 | /* Implement the to_can_do_single_step target_ops method. */ |
13781 | ||
f6ac5f3d PA |
13782 | int |
13783 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
13784 | { |
13785 | /* We can only tell whether target supports single step or not by | |
13786 | supported s and S vCont actions if the stub supports vContSupported | |
13787 | feature. If the stub doesn't support vContSupported feature, | |
13788 | we have conservatively to think target doesn't supports single | |
13789 | step. */ | |
13790 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13791 | { | |
13792 | struct remote_state *rs = get_remote_state (); | |
13793 | ||
13794 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13795 | remote_vcont_probe (rs); | |
13796 | ||
13797 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13798 | } | |
13799 | else | |
13800 | return 0; | |
13801 | } | |
13802 | ||
3a00c802 PA |
13803 | /* Implementation of the to_execution_direction method for the remote |
13804 | target. */ | |
13805 | ||
f6ac5f3d PA |
13806 | enum exec_direction_kind |
13807 | remote_target::execution_direction () | |
3a00c802 PA |
13808 | { |
13809 | struct remote_state *rs = get_remote_state (); | |
13810 | ||
13811 | return rs->last_resume_exec_dir; | |
13812 | } | |
13813 | ||
f6327dcb KB |
13814 | /* Return pointer to the thread_info struct which corresponds to |
13815 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13816 | ||
f6ac5f3d PA |
13817 | thread_info * |
13818 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
13819 | int handle_len, | |
13820 | inferior *inf) | |
f6327dcb KB |
13821 | { |
13822 | struct thread_info *tp; | |
13823 | ||
13824 | ALL_NON_EXITED_THREADS (tp) | |
13825 | { | |
7aabaf9d | 13826 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
13827 | |
13828 | if (tp->inf == inf && priv != NULL) | |
13829 | { | |
7aabaf9d | 13830 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 13831 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
13832 | handle_len, priv->thread_handle.size ()); |
13833 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
13834 | handle_len) == 0) |
13835 | return tp; | |
13836 | } | |
13837 | } | |
13838 | ||
13839 | return NULL; | |
13840 | } | |
13841 | ||
57810aa7 | 13842 | bool |
f6ac5f3d | 13843 | remote_target::can_async_p () |
6426a772 | 13844 | { |
5d93a237 TT |
13845 | struct remote_state *rs = get_remote_state (); |
13846 | ||
3015c064 SM |
13847 | /* We don't go async if the user has explicitly prevented it with the |
13848 | "maint set target-async" command. */ | |
c6ebd6cf | 13849 | if (!target_async_permitted) |
57810aa7 | 13850 | return false; |
75c99385 | 13851 | |
23860348 | 13852 | /* We're async whenever the serial device is. */ |
5d93a237 | 13853 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13854 | } |
13855 | ||
57810aa7 | 13856 | bool |
f6ac5f3d | 13857 | remote_target::is_async_p () |
6426a772 | 13858 | { |
5d93a237 TT |
13859 | struct remote_state *rs = get_remote_state (); |
13860 | ||
c6ebd6cf | 13861 | if (!target_async_permitted) |
75c99385 | 13862 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 13863 | return false; |
75c99385 | 13864 | |
23860348 | 13865 | /* We're async whenever the serial device is. */ |
5d93a237 | 13866 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13867 | } |
13868 | ||
2acceee2 JM |
13869 | /* Pass the SERIAL event on and up to the client. One day this code |
13870 | will be able to delay notifying the client of an event until the | |
23860348 | 13871 | point where an entire packet has been received. */ |
2acceee2 | 13872 | |
2acceee2 JM |
13873 | static serial_event_ftype remote_async_serial_handler; |
13874 | ||
6426a772 | 13875 | static void |
819cc324 | 13876 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13877 | { |
2acceee2 JM |
13878 | /* Don't propogate error information up to the client. Instead let |
13879 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13880 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13881 | } |
13882 | ||
74531fed PA |
13883 | static void |
13884 | remote_async_inferior_event_handler (gdb_client_data data) | |
13885 | { | |
13886 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13887 | } | |
13888 | ||
f6ac5f3d PA |
13889 | void |
13890 | remote_target::async (int enable) | |
2acceee2 | 13891 | { |
5d93a237 TT |
13892 | struct remote_state *rs = get_remote_state (); |
13893 | ||
6a3753b3 | 13894 | if (enable) |
2acceee2 | 13895 | { |
88b496c3 | 13896 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13897 | |
13898 | /* If there are pending events in the stop reply queue tell the | |
13899 | event loop to process them. */ | |
13900 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13901 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13902 | /* For simplicity, below we clear the pending events token |
13903 | without remembering whether it is marked, so here we always | |
13904 | mark it. If there's actually no pending notification to | |
13905 | process, this ends up being a no-op (other than a spurious | |
13906 | event-loop wakeup). */ | |
13907 | if (target_is_non_stop_p ()) | |
13908 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13909 | } |
13910 | else | |
b7d2e916 PA |
13911 | { |
13912 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13913 | /* If the core is disabling async, it doesn't want to be |
13914 | disturbed with target events. Clear all async event sources | |
13915 | too. */ | |
b7d2e916 | 13916 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13917 | if (target_is_non_stop_p ()) |
13918 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13919 | } |
6426a772 JM |
13920 | } |
13921 | ||
65706a29 PA |
13922 | /* Implementation of the to_thread_events method. */ |
13923 | ||
f6ac5f3d PA |
13924 | void |
13925 | remote_target::thread_events (int enable) | |
65706a29 PA |
13926 | { |
13927 | struct remote_state *rs = get_remote_state (); | |
13928 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13929 | |
13930 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13931 | return; | |
13932 | ||
13933 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13934 | putpkt (rs->buf); | |
13935 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13936 | ||
13937 | switch (packet_ok (rs->buf, | |
13938 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13939 | { | |
13940 | case PACKET_OK: | |
13941 | if (strcmp (rs->buf, "OK") != 0) | |
13942 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13943 | break; | |
13944 | case PACKET_ERROR: | |
13945 | warning (_("Remote failure reply: %s"), rs->buf); | |
13946 | break; | |
13947 | case PACKET_UNKNOWN: | |
13948 | break; | |
13949 | } | |
13950 | } | |
13951 | ||
5a2468f5 | 13952 | static void |
981a3fb3 | 13953 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 13954 | { |
635c7e8a | 13955 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13956 | } |
13957 | ||
d471ea57 | 13958 | static void |
981a3fb3 | 13959 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 13960 | { |
37a105a1 | 13961 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13962 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13963 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13964 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13965 | |
2e783024 | 13966 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13967 | for (; list != NULL; list = list->next) |
13968 | if (strcmp (list->name, "Z-packet") == 0) | |
13969 | continue; | |
427c3a89 DJ |
13970 | else if (list->type == not_set_cmd) |
13971 | /* Alias commands are exactly like the original, except they | |
13972 | don't have the normal type. */ | |
13973 | continue; | |
13974 | else | |
37a105a1 | 13975 | { |
2e783024 | 13976 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13977 | |
112e8700 SM |
13978 | uiout->field_string ("name", list->name); |
13979 | uiout->text (": "); | |
427c3a89 | 13980 | if (list->type == show_cmd) |
f5c4fcd9 | 13981 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13982 | else |
13983 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13984 | } |
d471ea57 | 13985 | } |
5a2468f5 | 13986 | |
0f71a2f6 | 13987 | |
23860348 | 13988 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13989 | static void |
13990 | remote_new_objfile (struct objfile *objfile) | |
13991 | { | |
5d93a237 TT |
13992 | struct remote_state *rs = get_remote_state (); |
13993 | ||
13994 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13995 | remote_check_symbols (); |
dc8acb97 MS |
13996 | } |
13997 | ||
00bf0b85 SS |
13998 | /* Pull all the tracepoints defined on the target and create local |
13999 | data structures representing them. We don't want to create real | |
14000 | tracepoints yet, we don't want to mess up the user's existing | |
14001 | collection. */ | |
14002 | ||
f6ac5f3d PA |
14003 | int |
14004 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14005 | { |
00bf0b85 SS |
14006 | struct remote_state *rs = get_remote_state (); |
14007 | char *p; | |
d5551862 | 14008 | |
00bf0b85 SS |
14009 | /* Ask for a first packet of tracepoint definition. */ |
14010 | putpkt ("qTfP"); | |
14011 | getpkt (&rs->buf, &rs->buf_size, 0); | |
14012 | p = rs->buf; | |
14013 | while (*p && *p != 'l') | |
d5551862 | 14014 | { |
00bf0b85 SS |
14015 | parse_tracepoint_definition (p, utpp); |
14016 | /* Ask for another packet of tracepoint definition. */ | |
14017 | putpkt ("qTsP"); | |
14018 | getpkt (&rs->buf, &rs->buf_size, 0); | |
14019 | p = rs->buf; | |
d5551862 | 14020 | } |
00bf0b85 | 14021 | return 0; |
d5551862 SS |
14022 | } |
14023 | ||
f6ac5f3d PA |
14024 | int |
14025 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14026 | { |
00bf0b85 | 14027 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14028 | char *p; |
d5551862 | 14029 | |
00bf0b85 SS |
14030 | /* Ask for a first packet of variable definition. */ |
14031 | putpkt ("qTfV"); | |
d5551862 SS |
14032 | getpkt (&rs->buf, &rs->buf_size, 0); |
14033 | p = rs->buf; | |
00bf0b85 | 14034 | while (*p && *p != 'l') |
d5551862 | 14035 | { |
00bf0b85 SS |
14036 | parse_tsv_definition (p, utsvp); |
14037 | /* Ask for another packet of variable definition. */ | |
14038 | putpkt ("qTsV"); | |
d5551862 SS |
14039 | getpkt (&rs->buf, &rs->buf_size, 0); |
14040 | p = rs->buf; | |
14041 | } | |
00bf0b85 | 14042 | return 0; |
d5551862 SS |
14043 | } |
14044 | ||
c1e36e3e PA |
14045 | /* The "set/show range-stepping" show hook. */ |
14046 | ||
14047 | static void | |
14048 | show_range_stepping (struct ui_file *file, int from_tty, | |
14049 | struct cmd_list_element *c, | |
14050 | const char *value) | |
14051 | { | |
14052 | fprintf_filtered (file, | |
14053 | _("Debugger's willingness to use range stepping " | |
14054 | "is %s.\n"), value); | |
14055 | } | |
14056 | ||
14057 | /* The "set/show range-stepping" set hook. */ | |
14058 | ||
14059 | static void | |
eb4c3f4a | 14060 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14061 | struct cmd_list_element *c) |
14062 | { | |
5d93a237 TT |
14063 | struct remote_state *rs = get_remote_state (); |
14064 | ||
c1e36e3e PA |
14065 | /* Whene enabling, check whether range stepping is actually |
14066 | supported by the target, and warn if not. */ | |
14067 | if (use_range_stepping) | |
14068 | { | |
5d93a237 | 14069 | if (rs->remote_desc != NULL) |
c1e36e3e | 14070 | { |
4082afcc | 14071 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
14072 | remote_vcont_probe (rs); |
14073 | ||
4082afcc | 14074 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
14075 | && rs->supports_vCont.r) |
14076 | return; | |
14077 | } | |
14078 | ||
14079 | warning (_("Range stepping is not supported by the current target")); | |
14080 | } | |
14081 | } | |
14082 | ||
c906108c | 14083 | void |
fba45db2 | 14084 | _initialize_remote (void) |
c906108c | 14085 | { |
9a7071a8 | 14086 | struct cmd_list_element *cmd; |
6f937416 | 14087 | const char *cmd_name; |
ea9c271d | 14088 | |
0f71a2f6 | 14089 | /* architecture specific data */ |
29709017 DJ |
14090 | remote_g_packet_data_handle = |
14091 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14092 | |
94585166 DB |
14093 | remote_pspace_data |
14094 | = register_program_space_data_with_cleanup (NULL, | |
14095 | remote_pspace_data_cleanup); | |
14096 | ||
ea9c271d DJ |
14097 | /* Initialize the per-target state. At the moment there is only one |
14098 | of these, not one per target. Only one target is active at a | |
cf792862 | 14099 | time. */ |
de44f5a7 | 14100 | remote_state = new struct remote_state (); |
ea9c271d | 14101 | |
d9f719f1 PA |
14102 | add_target (remote_target_info, remote_target::open); |
14103 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14104 | |
dc8acb97 | 14105 | /* Hook into new objfile notification. */ |
76727919 | 14106 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14107 | |
c906108c SS |
14108 | #if 0 |
14109 | init_remote_threadtests (); | |
14110 | #endif | |
14111 | ||
722247f1 | 14112 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 14113 | /* set/show remote ... */ |
d471ea57 | 14114 | |
1bedd215 | 14115 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
14116 | Remote protocol specific variables\n\ |
14117 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14118 | the packets being used"), |
cff3e48b | 14119 | &remote_set_cmdlist, "set remote ", |
23860348 | 14120 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14121 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
14122 | Remote protocol specific variables\n\ |
14123 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14124 | the packets being used"), |
cff3e48b | 14125 | &remote_show_cmdlist, "show remote ", |
23860348 | 14126 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14127 | |
1a966eab AC |
14128 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14129 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14130 | Argument is a single section name (default: all loaded sections).\n\ |
14131 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14132 | &cmdlist); |
14133 | ||
1a966eab AC |
14134 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14135 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14136 | maintenance packet TEXT\n\ |
14137 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14138 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14139 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14140 | terminating `#' character and checksum."), |
c906108c SS |
14141 | &maintenancelist); |
14142 | ||
7915a72c AC |
14143 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14144 | Set whether to send break if interrupted."), _("\ | |
14145 | Show whether to send break if interrupted."), _("\ | |
14146 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14147 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14148 | &setlist, &showlist); |
9a7071a8 JB |
14149 | cmd_name = "remotebreak"; |
14150 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14151 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14152 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14153 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14154 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14155 | ||
14156 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14157 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14158 | _("\ | |
9a7071a8 JB |
14159 | Set interrupt sequence to remote target."), _("\ |
14160 | Show interrupt sequence to remote target."), _("\ | |
14161 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14162 | NULL, show_interrupt_sequence, | |
14163 | &remote_set_cmdlist, | |
14164 | &remote_show_cmdlist); | |
14165 | ||
14166 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14167 | &interrupt_on_connect, _("\ | |
14168 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14169 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14170 | If set, interrupt sequence is sent to remote target."), | |
14171 | NULL, NULL, | |
14172 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14173 | |
23860348 | 14174 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14175 | |
1a966eab AC |
14176 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14177 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14178 | &setlist); |
1a966eab AC |
14179 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14180 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14181 | &showlist); |
14182 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14183 | set_memory_write_packet_size, _("\ |
14184 | Set the maximum number of bytes per memory-write packet.\n\ | |
14185 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14186 | default packet size. The actual limit is further reduced\n\ | |
14187 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14188 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14189 | &remote_set_cmdlist); |
14190 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14191 | set_memory_read_packet_size, _("\ |
14192 | Set the maximum number of bytes per memory-read packet.\n\ | |
14193 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14194 | default packet size. The actual limit is further reduced\n\ | |
14195 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14196 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14197 | &remote_set_cmdlist); |
14198 | add_cmd ("memory-write-packet-size", no_class, | |
14199 | show_memory_write_packet_size, | |
1a966eab | 14200 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14201 | &remote_show_cmdlist); |
14202 | add_cmd ("memory-read-packet-size", no_class, | |
14203 | show_memory_read_packet_size, | |
1a966eab | 14204 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14205 | &remote_show_cmdlist); |
c906108c | 14206 | |
b3f42336 | 14207 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14208 | &remote_hw_watchpoint_limit, _("\ |
14209 | Set the maximum number of target hardware watchpoints."), _("\ | |
14210 | Show the maximum number of target hardware watchpoints."), _("\ | |
14211 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14212 | NULL, NULL, /* FIXME: i18n: The maximum |
14213 | number of target hardware | |
14214 | watchpoints is %s. */ | |
b3f42336 | 14215 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14216 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14217 | &remote_hw_watchpoint_length_limit, _("\ | |
14218 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14219 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14220 | Specify a negative limit for unlimited."), | |
14221 | NULL, NULL, /* FIXME: i18n: The maximum | |
14222 | length (in bytes) of a target | |
14223 | hardware watchpoint is %s. */ | |
14224 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14225 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14226 | &remote_hw_breakpoint_limit, _("\ |
14227 | Set the maximum number of target hardware breakpoints."), _("\ | |
14228 | Show the maximum number of target hardware breakpoints."), _("\ | |
14229 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14230 | NULL, NULL, /* FIXME: i18n: The maximum |
14231 | number of target hardware | |
14232 | breakpoints is %s. */ | |
b3f42336 | 14233 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14234 | |
1b493192 PA |
14235 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14236 | &remote_address_size, _("\ | |
4d28ad1e AC |
14237 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14238 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14239 | NULL, |
14240 | NULL, /* FIXME: i18n: */ | |
14241 | &setlist, &showlist); | |
c906108c | 14242 | |
ca4f7f8b PA |
14243 | init_all_packet_configs (); |
14244 | ||
444abaca | 14245 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14246 | "X", "binary-download", 1); |
0f71a2f6 | 14247 | |
444abaca | 14248 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14249 | "vCont", "verbose-resume", 0); |
506fb367 | 14250 | |
89be2091 DJ |
14251 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14252 | "QPassSignals", "pass-signals", 0); | |
14253 | ||
82075af2 JS |
14254 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14255 | "QCatchSyscalls", "catch-syscalls", 0); | |
14256 | ||
9b224c5e PA |
14257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14258 | "QProgramSignals", "program-signals", 0); | |
14259 | ||
bc3b087d SDJ |
14260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14261 | "QSetWorkingDir", "set-working-dir", 0); | |
14262 | ||
aefd8b33 SDJ |
14263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14264 | "QStartupWithShell", "startup-with-shell", 0); | |
14265 | ||
0a2dde4a SDJ |
14266 | add_packet_config_cmd (&remote_protocol_packets |
14267 | [PACKET_QEnvironmentHexEncoded], | |
14268 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14269 | 0); | |
14270 | ||
14271 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14272 | "QEnvironmentReset", "environment-reset", | |
14273 | 0); | |
14274 | ||
14275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14276 | "QEnvironmentUnset", "environment-unset", | |
14277 | 0); | |
14278 | ||
444abaca | 14279 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14280 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14281 | |
444abaca | 14282 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14283 | "P", "set-register", 1); |
d471ea57 | 14284 | |
444abaca | 14285 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14286 | "p", "fetch-register", 1); |
b96ec7ac | 14287 | |
444abaca | 14288 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14289 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14290 | |
444abaca | 14291 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14292 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14293 | |
444abaca | 14294 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14295 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14296 | |
444abaca | 14297 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14298 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14299 | |
444abaca | 14300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14301 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14302 | |
0876f84a DJ |
14303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14304 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14305 | |
c78fa86a GB |
14306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14307 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14308 | ||
23181151 DJ |
14309 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14310 | "qXfer:features:read", "target-features", 0); | |
14311 | ||
cfa9d6d9 DJ |
14312 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14313 | "qXfer:libraries:read", "library-info", 0); | |
14314 | ||
2268b414 JK |
14315 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14316 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14317 | ||
fd79ecee DJ |
14318 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14319 | "qXfer:memory-map:read", "memory-map", 0); | |
14320 | ||
0e7f50da UW |
14321 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14322 | "qXfer:spu:read", "read-spu-object", 0); | |
14323 | ||
14324 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14325 | "qXfer:spu:write", "write-spu-object", 0); | |
14326 | ||
07e059b5 VP |
14327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14328 | "qXfer:osdata:read", "osdata", 0); | |
14329 | ||
dc146f7c VP |
14330 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14331 | "qXfer:threads:read", "threads", 0); | |
14332 | ||
4aa995e1 PA |
14333 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14334 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14335 | ||
14336 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14337 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14338 | ||
b3b9301e PA |
14339 | add_packet_config_cmd |
14340 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14341 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14342 | |
169081d0 TG |
14343 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14344 | "qXfer:uib:read", "unwind-info-block", 0); | |
14345 | ||
444abaca | 14346 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14347 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14348 | 0); |
14349 | ||
711e434b PM |
14350 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14351 | "qGetTIBAddr", "get-thread-information-block-address", | |
14352 | 0); | |
14353 | ||
40ab02ce MS |
14354 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14355 | "bc", "reverse-continue", 0); | |
14356 | ||
14357 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14358 | "bs", "reverse-step", 0); | |
14359 | ||
be2a5f71 DJ |
14360 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14361 | "qSupported", "supported-packets", 0); | |
14362 | ||
08388c79 DE |
14363 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14364 | "qSearch:memory", "search-memory", 0); | |
14365 | ||
bd3eecc3 PA |
14366 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14367 | "qTStatus", "trace-status", 0); | |
14368 | ||
15a201c8 GB |
14369 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14370 | "vFile:setfs", "hostio-setfs", 0); | |
14371 | ||
a6b151f1 DJ |
14372 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14373 | "vFile:open", "hostio-open", 0); | |
14374 | ||
14375 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14376 | "vFile:pread", "hostio-pread", 0); | |
14377 | ||
14378 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14379 | "vFile:pwrite", "hostio-pwrite", 0); | |
14380 | ||
14381 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14382 | "vFile:close", "hostio-close", 0); | |
14383 | ||
14384 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14385 | "vFile:unlink", "hostio-unlink", 0); | |
14386 | ||
b9e7b9c3 UW |
14387 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14388 | "vFile:readlink", "hostio-readlink", 0); | |
14389 | ||
0a93529c GB |
14390 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14391 | "vFile:fstat", "hostio-fstat", 0); | |
14392 | ||
2d717e4f DJ |
14393 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14394 | "vAttach", "attach", 0); | |
14395 | ||
14396 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14397 | "vRun", "run", 0); | |
14398 | ||
a6f3e723 SL |
14399 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14400 | "QStartNoAckMode", "noack", 0); | |
14401 | ||
82f73884 PA |
14402 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14403 | "vKill", "kill", 0); | |
14404 | ||
0b16c5cf PA |
14405 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14406 | "qAttached", "query-attached", 0); | |
14407 | ||
782b2b07 | 14408 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14409 | "ConditionalTracepoints", |
14410 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14411 | |
14412 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14413 | "ConditionalBreakpoints", | |
14414 | "conditional-breakpoints", 0); | |
14415 | ||
d3ce09f5 SS |
14416 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14417 | "BreakpointCommands", | |
14418 | "breakpoint-commands", 0); | |
14419 | ||
7a697b8d SS |
14420 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14421 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14422 | |
409873ef SS |
14423 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14424 | "TracepointSource", "TracepointSource", 0); | |
14425 | ||
d914c394 SS |
14426 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14427 | "QAllow", "allow", 0); | |
14428 | ||
0fb4aa4b PA |
14429 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14430 | "StaticTracepoints", "static-tracepoints", 0); | |
14431 | ||
1e4d1764 YQ |
14432 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14433 | "InstallInTrace", "install-in-trace", 0); | |
14434 | ||
0fb4aa4b PA |
14435 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14436 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14437 | ||
78d85199 YQ |
14438 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14439 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14440 | ||
03583c20 UW |
14441 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14442 | "QDisableRandomization", "disable-randomization", 0); | |
14443 | ||
d1feda86 YQ |
14444 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14445 | "QAgent", "agent", 0); | |
14446 | ||
f6f899bf HAQ |
14447 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14448 | "QTBuffer:size", "trace-buffer-size", 0); | |
14449 | ||
9accd112 MM |
14450 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14451 | "Qbtrace:off", "disable-btrace", 0); | |
14452 | ||
14453 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14454 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14455 | ||
14456 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14457 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14458 | |
14459 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14460 | "qXfer:btrace", "read-btrace", 0); | |
14461 | ||
f4abbc16 MM |
14462 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14463 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14464 | ||
d33501a5 MM |
14465 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14466 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14467 | ||
73b8c1fd PA |
14468 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14469 | "multiprocess-feature", "multiprocess-feature", 0); | |
14470 | ||
f7e6eed5 PA |
14471 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14472 | "swbreak-feature", "swbreak-feature", 0); | |
14473 | ||
14474 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14475 | "hwbreak-feature", "hwbreak-feature", 0); | |
14476 | ||
89245bc0 DB |
14477 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14478 | "fork-event-feature", "fork-event-feature", 0); | |
14479 | ||
14480 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14481 | "vfork-event-feature", "vfork-event-feature", 0); | |
14482 | ||
b20a6524 MM |
14483 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14484 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14485 | ||
750ce8d1 YQ |
14486 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14487 | "vContSupported", "verbose-resume-supported", 0); | |
14488 | ||
94585166 DB |
14489 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14490 | "exec-event-feature", "exec-event-feature", 0); | |
14491 | ||
de979965 PA |
14492 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14493 | "vCtrlC", "ctrl-c", 0); | |
14494 | ||
65706a29 PA |
14495 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14496 | "QThreadEvents", "thread-events", 0); | |
14497 | ||
f2faf941 PA |
14498 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14499 | "N stop reply", "no-resumed-stop-reply", 0); | |
14500 | ||
0b736949 DB |
14501 | /* Assert that we've registered "set remote foo-packet" commands |
14502 | for all packet configs. */ | |
ca4f7f8b PA |
14503 | { |
14504 | int i; | |
14505 | ||
14506 | for (i = 0; i < PACKET_MAX; i++) | |
14507 | { | |
14508 | /* Ideally all configs would have a command associated. Some | |
14509 | still don't though. */ | |
14510 | int excepted; | |
14511 | ||
14512 | switch (i) | |
14513 | { | |
14514 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14515 | case PACKET_EnableDisableTracepoints_feature: |
14516 | case PACKET_tracenz_feature: | |
14517 | case PACKET_DisconnectedTracing_feature: | |
14518 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14519 | case PACKET_qCRC: |
14520 | /* Additions to this list need to be well justified: | |
14521 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14522 | excepted = 1; |
14523 | break; | |
14524 | default: | |
14525 | excepted = 0; | |
14526 | break; | |
14527 | } | |
14528 | ||
14529 | /* This catches both forgetting to add a config command, and | |
14530 | forgetting to remove a packet from the exception list. */ | |
14531 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14532 | } | |
14533 | } | |
14534 | ||
37a105a1 DJ |
14535 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14536 | Z sub-packet has its own set and show commands, but users may | |
14537 | have sets to this variable in their .gdbinit files (or in their | |
14538 | documentation). */ | |
e9e68a56 | 14539 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14540 | &remote_Z_packet_detect, _("\ |
14541 | Set use of remote protocol `Z' packets"), _("\ | |
14542 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14543 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14544 | packets."), |
e9e68a56 | 14545 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14546 | show_remote_protocol_Z_packet_cmd, |
14547 | /* FIXME: i18n: Use of remote protocol | |
14548 | `Z' packets is %s. */ | |
e9e68a56 | 14549 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14550 | |
a6b151f1 DJ |
14551 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14552 | Manipulate files on the remote system\n\ | |
14553 | Transfer files to and from the remote target system."), | |
14554 | &remote_cmdlist, "remote ", | |
14555 | 0 /* allow-unknown */, &cmdlist); | |
14556 | ||
14557 | add_cmd ("put", class_files, remote_put_command, | |
14558 | _("Copy a local file to the remote system."), | |
14559 | &remote_cmdlist); | |
14560 | ||
14561 | add_cmd ("get", class_files, remote_get_command, | |
14562 | _("Copy a remote file to the local system."), | |
14563 | &remote_cmdlist); | |
14564 | ||
14565 | add_cmd ("delete", class_files, remote_delete_command, | |
14566 | _("Delete a remote file."), | |
14567 | &remote_cmdlist); | |
14568 | ||
2d717e4f | 14569 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14570 | &remote_exec_file_var, _("\ |
2d717e4f | 14571 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14572 | Show the remote pathname for \"run\""), NULL, |
14573 | set_remote_exec_file, | |
14574 | show_remote_exec_file, | |
14575 | &remote_set_cmdlist, | |
14576 | &remote_show_cmdlist); | |
2d717e4f | 14577 | |
c1e36e3e PA |
14578 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14579 | &use_range_stepping, _("\ | |
14580 | Enable or disable range stepping."), _("\ | |
14581 | Show whether target-assisted range stepping is enabled."), _("\ | |
14582 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14583 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14584 | of issuing multiple single-steps. This speeds up source level\n\ | |
14585 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14586 | stepping is supported by the target. The default is on."), | |
14587 | set_range_stepping, | |
14588 | show_range_stepping, | |
14589 | &setlist, | |
14590 | &showlist); | |
14591 | ||
449092f6 CV |
14592 | /* Eventually initialize fileio. See fileio.c */ |
14593 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14594 | |
ba348170 | 14595 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14596 | special ptids with it set to != 0. */ |
ba348170 PA |
14597 | magic_null_ptid = ptid_build (42000, -1, 1); |
14598 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14599 | any_thread_ptid = ptid_build (42000, 0, 1); | |
c906108c | 14600 | } |