Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1988-2018 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
438e1e42 | 50 | #include "gdb_sys_time.h" |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
2ec845e7 | 75 | #include "common/scoped_restore.h" |
0a2dde4a | 76 | #include "environ.h" |
f6327dcb | 77 | #include "common/byte-vector.h" |
9d6eea31 | 78 | #include <unordered_map> |
35b1e5cc | 79 | |
f6ac5f3d PA |
80 | /* The remote target. */ |
81 | ||
d9f719f1 PA |
82 | static const char remote_doc[] = N_("\ |
83 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
84 | Specify the serial device it is connected to\n\ | |
85 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
86 | ||
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 | ||
a5c0808e PA |
1331 | /* The default max memory-write-packet-size. The 16k is historical. |
1332 | (It came from older GDB's using alloca for buffers and the | |
1333 | knowledge (folklore?) that some hosts don't cope very well with | |
1334 | large alloca calls.) */ | |
1335 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
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 | ||
11cf8741 JM |
1341 | /* Compute the current size of a read/write packet. Since this makes |
1342 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1343 | ||
1344 | static long | |
1345 | get_memory_packet_size (struct memory_packet_config *config) | |
1346 | { | |
d01949b6 | 1347 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1348 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1349 | |
11cf8741 JM |
1350 | long what_they_get; |
1351 | if (config->fixed_p) | |
1352 | { | |
1353 | if (config->size <= 0) | |
a5c0808e | 1354 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1355 | else |
1356 | what_they_get = config->size; | |
1357 | } | |
1358 | else | |
1359 | { | |
ea9c271d | 1360 | what_they_get = get_remote_packet_size (); |
23860348 | 1361 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1362 | if (config->size > 0 |
1363 | && what_they_get > config->size) | |
1364 | what_they_get = config->size; | |
be2a5f71 DJ |
1365 | |
1366 | /* Limit it to the size of the targets ``g'' response unless we have | |
1367 | permission from the stub to use a larger packet size. */ | |
1368 | if (rs->explicit_packet_size == 0 | |
1369 | && rsa->actual_register_packet_size > 0 | |
1370 | && what_they_get > rsa->actual_register_packet_size) | |
1371 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1372 | } |
a5c0808e PA |
1373 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1374 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1375 | |
1376 | /* Make sure there is room in the global buffer for this packet | |
1377 | (including its trailing NUL byte). */ | |
1378 | if (rs->buf_size < what_they_get + 1) | |
1379 | { | |
1380 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1381 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1382 | } |
1383 | ||
11cf8741 JM |
1384 | return what_they_get; |
1385 | } | |
1386 | ||
0df8b418 | 1387 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1388 | something really big then do a sanity check. */ |
11cf8741 JM |
1389 | |
1390 | static void | |
ac88e2de | 1391 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1392 | { |
1393 | int fixed_p = config->fixed_p; | |
1394 | long size = config->size; | |
a744cf53 | 1395 | |
11cf8741 | 1396 | if (args == NULL) |
8a3fe4f8 | 1397 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1398 | else if (strcmp (args, "hard") == 0 |
1399 | || strcmp (args, "fixed") == 0) | |
1400 | fixed_p = 1; | |
1401 | else if (strcmp (args, "soft") == 0 | |
1402 | || strcmp (args, "limit") == 0) | |
1403 | fixed_p = 0; | |
1404 | else | |
1405 | { | |
1406 | char *end; | |
a744cf53 | 1407 | |
11cf8741 JM |
1408 | size = strtoul (args, &end, 0); |
1409 | if (args == end) | |
8a3fe4f8 | 1410 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1411 | |
1412 | /* Instead of explicitly capping the size of a packet to or | |
1413 | disallowing it, the user is allowed to set the size to | |
1414 | something arbitrarily large. */ | |
11cf8741 | 1415 | } |
a5c0808e PA |
1416 | |
1417 | /* So that the query shows the correct value. */ | |
1418 | if (size <= 0) | |
1419 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1420 | ||
23860348 | 1421 | /* Extra checks? */ |
11cf8741 JM |
1422 | if (fixed_p && !config->fixed_p) |
1423 | { | |
e2e0b3e5 AC |
1424 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1425 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1426 | config->name, size)) |
8a3fe4f8 | 1427 | error (_("Packet size not changed.")); |
11cf8741 | 1428 | } |
23860348 | 1429 | /* Update the config. */ |
11cf8741 JM |
1430 | config->fixed_p = fixed_p; |
1431 | config->size = size; | |
1432 | } | |
1433 | ||
1434 | static void | |
1435 | show_memory_packet_size (struct memory_packet_config *config) | |
1436 | { | |
a3f17187 | 1437 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1438 | if (config->fixed_p) |
a3f17187 | 1439 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1440 | get_memory_packet_size (config)); |
1441 | else | |
a3f17187 | 1442 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1443 | get_memory_packet_size (config)); |
1444 | } | |
1445 | ||
1446 | static struct memory_packet_config memory_write_packet_config = | |
1447 | { | |
1448 | "memory-write-packet-size", | |
1449 | }; | |
1450 | ||
1451 | static void | |
ac88e2de | 1452 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1453 | { |
1454 | set_memory_packet_size (args, &memory_write_packet_config); | |
1455 | } | |
1456 | ||
1457 | static void | |
ac88e2de | 1458 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1459 | { |
1460 | show_memory_packet_size (&memory_write_packet_config); | |
1461 | } | |
1462 | ||
1463 | static long | |
1464 | get_memory_write_packet_size (void) | |
1465 | { | |
1466 | return get_memory_packet_size (&memory_write_packet_config); | |
1467 | } | |
1468 | ||
1469 | static struct memory_packet_config memory_read_packet_config = | |
1470 | { | |
1471 | "memory-read-packet-size", | |
1472 | }; | |
1473 | ||
1474 | static void | |
ac88e2de | 1475 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1476 | { |
1477 | set_memory_packet_size (args, &memory_read_packet_config); | |
1478 | } | |
1479 | ||
1480 | static void | |
ac88e2de | 1481 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1482 | { |
1483 | show_memory_packet_size (&memory_read_packet_config); | |
1484 | } | |
1485 | ||
1486 | static long | |
1487 | get_memory_read_packet_size (void) | |
1488 | { | |
1489 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1490 | |
11cf8741 JM |
1491 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1492 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1493 | increased beyond this. */ |
1494 | if (size > get_remote_packet_size ()) | |
1495 | size = get_remote_packet_size (); | |
11cf8741 JM |
1496 | return size; |
1497 | } | |
1498 | ||
11cf8741 | 1499 | \f |
5a2468f5 | 1500 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1501 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1502 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1503 | |
1504 | enum packet_support | |
1505 | { | |
1506 | PACKET_SUPPORT_UNKNOWN = 0, | |
1507 | PACKET_ENABLE, | |
1508 | PACKET_DISABLE | |
1509 | }; | |
1510 | ||
5a2468f5 JM |
1511 | struct packet_config |
1512 | { | |
bb572ddd DJ |
1513 | const char *name; |
1514 | const char *title; | |
4082afcc PA |
1515 | |
1516 | /* If auto, GDB auto-detects support for this packet or feature, | |
1517 | either through qSupported, or by trying the packet and looking | |
1518 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1519 | packet. If false, the packet is disabled. Configs that don't |
1520 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1521 | enum auto_boolean detect; |
4082afcc PA |
1522 | |
1523 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1524 | enum packet_support support; |
1525 | }; | |
1526 | ||
d471ea57 | 1527 | /* Analyze a packet's return value and update the packet config |
23860348 | 1528 | accordingly. */ |
d471ea57 AC |
1529 | |
1530 | enum packet_result | |
1531 | { | |
1532 | PACKET_ERROR, | |
1533 | PACKET_OK, | |
1534 | PACKET_UNKNOWN | |
1535 | }; | |
1536 | ||
4082afcc PA |
1537 | static enum packet_support packet_config_support (struct packet_config *config); |
1538 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1539 | |
1540 | static void | |
fba45db2 | 1541 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1542 | { |
a121b7c1 | 1543 | const char *support = "internal-error"; |
a744cf53 | 1544 | |
4082afcc | 1545 | switch (packet_config_support (config)) |
5a2468f5 JM |
1546 | { |
1547 | case PACKET_ENABLE: | |
1548 | support = "enabled"; | |
1549 | break; | |
1550 | case PACKET_DISABLE: | |
1551 | support = "disabled"; | |
1552 | break; | |
1553 | case PACKET_SUPPORT_UNKNOWN: | |
1554 | support = "unknown"; | |
1555 | break; | |
1556 | } | |
1557 | switch (config->detect) | |
1558 | { | |
7f19b9a2 | 1559 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1560 | printf_filtered (_("Support for the `%s' packet " |
1561 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1562 | config->name, support); |
5a2468f5 | 1563 | break; |
7f19b9a2 AC |
1564 | case AUTO_BOOLEAN_TRUE: |
1565 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1566 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1567 | config->name, support); | |
8e248173 | 1568 | break; |
5a2468f5 JM |
1569 | } |
1570 | } | |
1571 | ||
1572 | static void | |
bb572ddd DJ |
1573 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1574 | const char *title, int legacy) | |
d471ea57 | 1575 | { |
5a2468f5 JM |
1576 | char *set_doc; |
1577 | char *show_doc; | |
d471ea57 | 1578 | char *cmd_name; |
3ed07be4 | 1579 | |
5a2468f5 JM |
1580 | config->name = name; |
1581 | config->title = title; | |
b435e160 AC |
1582 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1583 | name, title); | |
3e43a32a MS |
1584 | show_doc = xstrprintf ("Show current use of remote " |
1585 | "protocol `%s' (%s) packet", | |
b435e160 | 1586 | name, title); |
d471ea57 | 1587 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1588 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1589 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1590 | &config->detect, set_doc, |
1591 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1592 | NULL, |
bb572ddd DJ |
1593 | show_remote_protocol_packet_cmd, |
1594 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1595 | /* The command code copies the documentation strings. */ |
1596 | xfree (set_doc); | |
1597 | xfree (show_doc); | |
23860348 | 1598 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1599 | if (legacy) |
1600 | { | |
1601 | char *legacy_name; | |
a744cf53 | 1602 | |
b435e160 | 1603 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1604 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1605 | &remote_set_cmdlist); |
d471ea57 | 1606 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1607 | &remote_show_cmdlist); |
d471ea57 | 1608 | } |
5a2468f5 JM |
1609 | } |
1610 | ||
d471ea57 | 1611 | static enum packet_result |
a76d924d | 1612 | packet_check_result (const char *buf) |
5a2468f5 | 1613 | { |
d471ea57 | 1614 | if (buf[0] != '\0') |
5a2468f5 | 1615 | { |
d471ea57 | 1616 | /* The stub recognized the packet request. Check that the |
23860348 | 1617 | operation succeeded. */ |
a76d924d DJ |
1618 | if (buf[0] == 'E' |
1619 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1620 | && buf[3] == '\0') | |
1621 | /* "Enn" - definitly an error. */ | |
1622 | return PACKET_ERROR; | |
1623 | ||
1624 | /* Always treat "E." as an error. This will be used for | |
1625 | more verbose error messages, such as E.memtypes. */ | |
1626 | if (buf[0] == 'E' && buf[1] == '.') | |
1627 | return PACKET_ERROR; | |
1628 | ||
1629 | /* The packet may or may not be OK. Just assume it is. */ | |
1630 | return PACKET_OK; | |
1631 | } | |
1632 | else | |
1633 | /* The stub does not support the packet. */ | |
1634 | return PACKET_UNKNOWN; | |
1635 | } | |
1636 | ||
1637 | static enum packet_result | |
1638 | packet_ok (const char *buf, struct packet_config *config) | |
1639 | { | |
1640 | enum packet_result result; | |
1641 | ||
4082afcc PA |
1642 | if (config->detect != AUTO_BOOLEAN_TRUE |
1643 | && config->support == PACKET_DISABLE) | |
1644 | internal_error (__FILE__, __LINE__, | |
1645 | _("packet_ok: attempt to use a disabled packet")); | |
1646 | ||
a76d924d DJ |
1647 | result = packet_check_result (buf); |
1648 | switch (result) | |
1649 | { | |
1650 | case PACKET_OK: | |
1651 | case PACKET_ERROR: | |
1652 | /* The stub recognized the packet request. */ | |
4082afcc | 1653 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1654 | { |
d471ea57 AC |
1655 | if (remote_debug) |
1656 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1657 | "Packet %s (%s) is supported\n", |
1658 | config->name, config->title); | |
d471ea57 | 1659 | config->support = PACKET_ENABLE; |
d471ea57 | 1660 | } |
a76d924d DJ |
1661 | break; |
1662 | case PACKET_UNKNOWN: | |
23860348 | 1663 | /* The stub does not support the packet. */ |
4082afcc PA |
1664 | if (config->detect == AUTO_BOOLEAN_AUTO |
1665 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1666 | { |
4082afcc PA |
1667 | /* If the stub previously indicated that the packet was |
1668 | supported then there is a protocol error. */ | |
1669 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1670 | config->name, config->title); | |
1671 | } | |
1672 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1673 | { | |
1674 | /* The user set it wrong. */ | |
1675 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1676 | config->name, config->title); | |
d471ea57 | 1677 | } |
4082afcc PA |
1678 | |
1679 | if (remote_debug) | |
1680 | fprintf_unfiltered (gdb_stdlog, | |
1681 | "Packet %s (%s) is NOT supported\n", | |
1682 | config->name, config->title); | |
1683 | config->support = PACKET_DISABLE; | |
a76d924d | 1684 | break; |
5a2468f5 | 1685 | } |
a76d924d DJ |
1686 | |
1687 | return result; | |
5a2468f5 JM |
1688 | } |
1689 | ||
444abaca DJ |
1690 | enum { |
1691 | PACKET_vCont = 0, | |
1692 | PACKET_X, | |
1693 | PACKET_qSymbol, | |
1694 | PACKET_P, | |
1695 | PACKET_p, | |
1696 | PACKET_Z0, | |
1697 | PACKET_Z1, | |
1698 | PACKET_Z2, | |
1699 | PACKET_Z3, | |
1700 | PACKET_Z4, | |
15a201c8 | 1701 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1702 | PACKET_vFile_open, |
1703 | PACKET_vFile_pread, | |
1704 | PACKET_vFile_pwrite, | |
1705 | PACKET_vFile_close, | |
1706 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1707 | PACKET_vFile_readlink, |
0a93529c | 1708 | PACKET_vFile_fstat, |
0876f84a | 1709 | PACKET_qXfer_auxv, |
23181151 | 1710 | PACKET_qXfer_features, |
c78fa86a | 1711 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1712 | PACKET_qXfer_libraries, |
2268b414 | 1713 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1714 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1715 | PACKET_qXfer_spu_read, |
1716 | PACKET_qXfer_spu_write, | |
07e059b5 | 1717 | PACKET_qXfer_osdata, |
dc146f7c | 1718 | PACKET_qXfer_threads, |
0fb4aa4b | 1719 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1720 | PACKET_qXfer_traceframe_info, |
169081d0 | 1721 | PACKET_qXfer_uib, |
711e434b | 1722 | PACKET_qGetTIBAddr, |
444abaca | 1723 | PACKET_qGetTLSAddr, |
be2a5f71 | 1724 | PACKET_qSupported, |
bd3eecc3 | 1725 | PACKET_qTStatus, |
89be2091 | 1726 | PACKET_QPassSignals, |
82075af2 | 1727 | PACKET_QCatchSyscalls, |
9b224c5e | 1728 | PACKET_QProgramSignals, |
bc3b087d | 1729 | PACKET_QSetWorkingDir, |
aefd8b33 | 1730 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1731 | PACKET_QEnvironmentHexEncoded, |
1732 | PACKET_QEnvironmentReset, | |
1733 | PACKET_QEnvironmentUnset, | |
936d2992 | 1734 | PACKET_qCRC, |
08388c79 | 1735 | PACKET_qSearch_memory, |
2d717e4f DJ |
1736 | PACKET_vAttach, |
1737 | PACKET_vRun, | |
a6f3e723 | 1738 | PACKET_QStartNoAckMode, |
82f73884 | 1739 | PACKET_vKill, |
4aa995e1 PA |
1740 | PACKET_qXfer_siginfo_read, |
1741 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1742 | PACKET_qAttached, |
4082afcc PA |
1743 | |
1744 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1745 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1746 | |
1747 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1748 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1749 | |
1750 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1751 | PACKET_BreakpointCommands, |
4082afcc PA |
1752 | |
1753 | /* Support for fast tracepoints. */ | |
7a697b8d | 1754 | PACKET_FastTracepoints, |
4082afcc PA |
1755 | |
1756 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1757 | PACKET_StaticTracepoints, |
4082afcc PA |
1758 | |
1759 | /* Support for installing tracepoints while a trace experiment is | |
1760 | running. */ | |
1e4d1764 | 1761 | PACKET_InstallInTrace, |
4082afcc | 1762 | |
40ab02ce MS |
1763 | PACKET_bc, |
1764 | PACKET_bs, | |
409873ef | 1765 | PACKET_TracepointSource, |
d914c394 | 1766 | PACKET_QAllow, |
78d85199 | 1767 | PACKET_qXfer_fdpic, |
03583c20 | 1768 | PACKET_QDisableRandomization, |
d1feda86 | 1769 | PACKET_QAgent, |
f6f899bf | 1770 | PACKET_QTBuffer_size, |
9accd112 MM |
1771 | PACKET_Qbtrace_off, |
1772 | PACKET_Qbtrace_bts, | |
b20a6524 | 1773 | PACKET_Qbtrace_pt, |
9accd112 | 1774 | PACKET_qXfer_btrace, |
4082afcc PA |
1775 | |
1776 | /* Support for the QNonStop packet. */ | |
1777 | PACKET_QNonStop, | |
1778 | ||
65706a29 PA |
1779 | /* Support for the QThreadEvents packet. */ |
1780 | PACKET_QThreadEvents, | |
1781 | ||
4082afcc PA |
1782 | /* Support for multi-process extensions. */ |
1783 | PACKET_multiprocess_feature, | |
1784 | ||
1785 | /* Support for enabling and disabling tracepoints while a trace | |
1786 | experiment is running. */ | |
1787 | PACKET_EnableDisableTracepoints_feature, | |
1788 | ||
1789 | /* Support for collecting strings using the tracenz bytecode. */ | |
1790 | PACKET_tracenz_feature, | |
1791 | ||
1792 | /* Support for continuing to run a trace experiment while GDB is | |
1793 | disconnected. */ | |
1794 | PACKET_DisconnectedTracing_feature, | |
1795 | ||
1796 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1797 | PACKET_augmented_libraries_svr4_read_feature, | |
1798 | ||
f4abbc16 MM |
1799 | /* Support for the qXfer:btrace-conf:read packet. */ |
1800 | PACKET_qXfer_btrace_conf, | |
1801 | ||
d33501a5 MM |
1802 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1803 | PACKET_Qbtrace_conf_bts_size, | |
1804 | ||
f7e6eed5 PA |
1805 | /* Support for swbreak+ feature. */ |
1806 | PACKET_swbreak_feature, | |
1807 | ||
1808 | /* Support for hwbreak+ feature. */ | |
1809 | PACKET_hwbreak_feature, | |
1810 | ||
89245bc0 DB |
1811 | /* Support for fork events. */ |
1812 | PACKET_fork_event_feature, | |
1813 | ||
1814 | /* Support for vfork events. */ | |
1815 | PACKET_vfork_event_feature, | |
1816 | ||
b20a6524 MM |
1817 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1818 | PACKET_Qbtrace_conf_pt_size, | |
1819 | ||
94585166 DB |
1820 | /* Support for exec events. */ |
1821 | PACKET_exec_event_feature, | |
1822 | ||
750ce8d1 YQ |
1823 | /* Support for query supported vCont actions. */ |
1824 | PACKET_vContSupported, | |
1825 | ||
de979965 PA |
1826 | /* Support remote CTRL-C. */ |
1827 | PACKET_vCtrlC, | |
1828 | ||
f2faf941 PA |
1829 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1830 | PACKET_no_resumed, | |
1831 | ||
444abaca DJ |
1832 | PACKET_MAX |
1833 | }; | |
506fb367 | 1834 | |
444abaca | 1835 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1836 | |
f7e6eed5 PA |
1837 | /* Returns the packet's corresponding "set remote foo-packet" command |
1838 | state. See struct packet_config for more details. */ | |
1839 | ||
1840 | static enum auto_boolean | |
1841 | packet_set_cmd_state (int packet) | |
1842 | { | |
1843 | return remote_protocol_packets[packet].detect; | |
1844 | } | |
1845 | ||
4082afcc PA |
1846 | /* Returns whether a given packet or feature is supported. This takes |
1847 | into account the state of the corresponding "set remote foo-packet" | |
1848 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1849 | |
4082afcc PA |
1850 | static enum packet_support |
1851 | packet_config_support (struct packet_config *config) | |
1852 | { | |
1853 | switch (config->detect) | |
444abaca | 1854 | { |
4082afcc PA |
1855 | case AUTO_BOOLEAN_TRUE: |
1856 | return PACKET_ENABLE; | |
1857 | case AUTO_BOOLEAN_FALSE: | |
1858 | return PACKET_DISABLE; | |
1859 | case AUTO_BOOLEAN_AUTO: | |
1860 | return config->support; | |
1861 | default: | |
1862 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1863 | } |
4082afcc PA |
1864 | } |
1865 | ||
1866 | /* Same as packet_config_support, but takes the packet's enum value as | |
1867 | argument. */ | |
1868 | ||
1869 | static enum packet_support | |
1870 | packet_support (int packet) | |
1871 | { | |
1872 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1873 | ||
1874 | return packet_config_support (config); | |
dc8acb97 MS |
1875 | } |
1876 | ||
5a2468f5 | 1877 | static void |
444abaca DJ |
1878 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1879 | struct cmd_list_element *c, | |
1880 | const char *value) | |
5a2468f5 | 1881 | { |
444abaca | 1882 | struct packet_config *packet; |
5a2468f5 | 1883 | |
444abaca DJ |
1884 | for (packet = remote_protocol_packets; |
1885 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1886 | packet++) | |
1887 | { | |
1888 | if (&packet->detect == c->var) | |
1889 | { | |
1890 | show_packet_config_cmd (packet); | |
1891 | return; | |
1892 | } | |
1893 | } | |
9b20d036 | 1894 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1895 | c->name); |
5a2468f5 JM |
1896 | } |
1897 | ||
d471ea57 AC |
1898 | /* Should we try one of the 'Z' requests? */ |
1899 | ||
1900 | enum Z_packet_type | |
1901 | { | |
1902 | Z_PACKET_SOFTWARE_BP, | |
1903 | Z_PACKET_HARDWARE_BP, | |
1904 | Z_PACKET_WRITE_WP, | |
1905 | Z_PACKET_READ_WP, | |
1906 | Z_PACKET_ACCESS_WP, | |
1907 | NR_Z_PACKET_TYPES | |
1908 | }; | |
96baa820 | 1909 | |
d471ea57 | 1910 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1911 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1912 | |
7f19b9a2 | 1913 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1914 | |
1915 | static void | |
eb4c3f4a | 1916 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 1917 | struct cmd_list_element *c) |
96baa820 | 1918 | { |
d471ea57 | 1919 | int i; |
a744cf53 | 1920 | |
d471ea57 | 1921 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1922 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1923 | } |
1924 | ||
1925 | static void | |
08546159 AC |
1926 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1927 | struct cmd_list_element *c, | |
1928 | const char *value) | |
96baa820 | 1929 | { |
d471ea57 | 1930 | int i; |
a744cf53 | 1931 | |
d471ea57 AC |
1932 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1933 | { | |
444abaca | 1934 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1935 | } |
96baa820 JM |
1936 | } |
1937 | ||
4082afcc PA |
1938 | /* Returns true if the multi-process extensions are in effect. */ |
1939 | ||
1940 | static int | |
1941 | remote_multi_process_p (struct remote_state *rs) | |
1942 | { | |
1943 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1944 | } | |
1945 | ||
de0d863e DB |
1946 | /* Returns true if fork events are supported. */ |
1947 | ||
1948 | static int | |
1949 | remote_fork_event_p (struct remote_state *rs) | |
1950 | { | |
1951 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1952 | } | |
1953 | ||
c269dbdb DB |
1954 | /* Returns true if vfork events are supported. */ |
1955 | ||
1956 | static int | |
1957 | remote_vfork_event_p (struct remote_state *rs) | |
1958 | { | |
1959 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1960 | } | |
1961 | ||
d46addbb DB |
1962 | /* Returns true if exec events are supported. */ |
1963 | ||
1964 | static int | |
1965 | remote_exec_event_p (struct remote_state *rs) | |
1966 | { | |
1967 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1968 | } | |
1969 | ||
cbb8991c DB |
1970 | /* Insert fork catchpoint target routine. If fork events are enabled |
1971 | then return success, nothing more to do. */ | |
1972 | ||
f6ac5f3d PA |
1973 | int |
1974 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
1975 | { |
1976 | struct remote_state *rs = get_remote_state (); | |
1977 | ||
1978 | return !remote_fork_event_p (rs); | |
1979 | } | |
1980 | ||
1981 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1982 | return success. */ | |
1983 | ||
f6ac5f3d PA |
1984 | int |
1985 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
1986 | { |
1987 | return 0; | |
1988 | } | |
1989 | ||
1990 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1991 | then return success, nothing more to do. */ | |
1992 | ||
f6ac5f3d PA |
1993 | int |
1994 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
1995 | { |
1996 | struct remote_state *rs = get_remote_state (); | |
1997 | ||
1998 | return !remote_vfork_event_p (rs); | |
1999 | } | |
2000 | ||
2001 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2002 | return success. */ | |
2003 | ||
f6ac5f3d PA |
2004 | int |
2005 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2006 | { |
2007 | return 0; | |
2008 | } | |
2009 | ||
d46addbb DB |
2010 | /* Insert exec catchpoint target routine. If exec events are |
2011 | enabled, just return success. */ | |
2012 | ||
f6ac5f3d PA |
2013 | int |
2014 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2015 | { |
2016 | struct remote_state *rs = get_remote_state (); | |
2017 | ||
2018 | return !remote_exec_event_p (rs); | |
2019 | } | |
2020 | ||
2021 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2022 | return success. */ | |
2023 | ||
f6ac5f3d PA |
2024 | int |
2025 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2026 | { |
2027 | return 0; | |
2028 | } | |
2029 | ||
74531fed PA |
2030 | \f |
2031 | /* Asynchronous signal handle registered as event loop source for | |
2032 | when we have pending events ready to be passed to the core. */ | |
2033 | ||
2034 | static struct async_event_handler *remote_async_inferior_event_token; | |
2035 | ||
c906108c SS |
2036 | \f |
2037 | ||
79d7f229 PA |
2038 | static ptid_t magic_null_ptid; |
2039 | static ptid_t not_sent_ptid; | |
2040 | static ptid_t any_thread_ptid; | |
2041 | ||
0b16c5cf PA |
2042 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2043 | detach instead of killing it when bailing out). */ | |
2044 | ||
2045 | static int | |
2046 | remote_query_attached (int pid) | |
2047 | { | |
2048 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2049 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2050 | |
4082afcc | 2051 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2052 | return 0; |
2053 | ||
2054 | if (remote_multi_process_p (rs)) | |
bba74b36 | 2055 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 2056 | else |
bba74b36 | 2057 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
2058 | |
2059 | putpkt (rs->buf); | |
2060 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2061 | ||
2062 | switch (packet_ok (rs->buf, | |
1554e9be | 2063 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2064 | { |
2065 | case PACKET_OK: | |
2066 | if (strcmp (rs->buf, "1") == 0) | |
2067 | return 1; | |
2068 | break; | |
2069 | case PACKET_ERROR: | |
2070 | warning (_("Remote failure reply: %s"), rs->buf); | |
2071 | break; | |
2072 | case PACKET_UNKNOWN: | |
2073 | break; | |
2074 | } | |
2075 | ||
2076 | return 0; | |
2077 | } | |
2078 | ||
49c62f2e PA |
2079 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2080 | has been invented by GDB, instead of reported by the target. Since | |
2081 | we can be connected to a remote system before before knowing about | |
2082 | any inferior, mark the target with execution when we find the first | |
2083 | inferior. If ATTACHED is 1, then we had just attached to this | |
2084 | inferior. If it is 0, then we just created this inferior. If it | |
2085 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2086 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2087 | attempt to open this inferior's executable as the main executable | |
2088 | if no main executable is open already. */ | |
1941c569 PA |
2089 | |
2090 | static struct inferior * | |
1b6e6f5c GB |
2091 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
2092 | int try_open_exec) | |
1941c569 | 2093 | { |
1941c569 PA |
2094 | struct inferior *inf; |
2095 | ||
0b16c5cf PA |
2096 | /* Check whether this process we're learning about is to be |
2097 | considered attached, or if is to be considered to have been | |
2098 | spawned by the stub. */ | |
2099 | if (attached == -1) | |
2100 | attached = remote_query_attached (pid); | |
2101 | ||
f5656ead | 2102 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2103 | { |
2104 | /* If the target shares code across all inferiors, then every | |
2105 | attach adds a new inferior. */ | |
2106 | inf = add_inferior (pid); | |
2107 | ||
2108 | /* ... and every inferior is bound to the same program space. | |
2109 | However, each inferior may still have its own address | |
2110 | space. */ | |
2111 | inf->aspace = maybe_new_address_space (); | |
2112 | inf->pspace = current_program_space; | |
2113 | } | |
2114 | else | |
2115 | { | |
2116 | /* In the traditional debugging scenario, there's a 1-1 match | |
2117 | between program/address spaces. We simply bind the inferior | |
2118 | to the program space's address space. */ | |
2119 | inf = current_inferior (); | |
2120 | inferior_appeared (inf, pid); | |
2121 | } | |
1941c569 | 2122 | |
0b16c5cf | 2123 | inf->attach_flag = attached; |
49c62f2e | 2124 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2125 | |
1b6e6f5c GB |
2126 | /* If no main executable is currently open then attempt to |
2127 | open the file that was executed to create this inferior. */ | |
835205d0 | 2128 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2129 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2130 | |
1941c569 PA |
2131 | return inf; |
2132 | } | |
2133 | ||
7aabaf9d | 2134 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
85ad3aaf | 2135 | |
1941c569 PA |
2136 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2137 | according to RUNNING. */ | |
2138 | ||
c906108c | 2139 | static void |
0d5b594f | 2140 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 2141 | { |
b7ea362b | 2142 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2143 | struct thread_info *thread; |
b7ea362b PA |
2144 | |
2145 | /* GDB historically didn't pull threads in the initial connection | |
2146 | setup. If the remote target doesn't even have a concept of | |
2147 | threads (e.g., a bare-metal target), even if internally we | |
2148 | consider that a single-threaded target, mentioning a new thread | |
2149 | might be confusing to the user. Be silent then, preserving the | |
2150 | age old behavior. */ | |
2151 | if (rs->starting_up) | |
85ad3aaf | 2152 | thread = add_thread_silent (ptid); |
b7ea362b | 2153 | else |
85ad3aaf | 2154 | thread = add_thread (ptid); |
1941c569 | 2155 | |
7aabaf9d | 2156 | get_remote_thread_info (thread)->vcont_resumed = executing; |
0d5b594f | 2157 | set_executing (ptid, executing); |
1941c569 PA |
2158 | set_running (ptid, running); |
2159 | } | |
2160 | ||
2161 | /* Come here when we learn about a thread id from the remote target. | |
2162 | It may be the first time we hear about such thread, so take the | |
2163 | opportunity to add it to GDB's thread list. In case this is the | |
2164 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2165 | GDB's inferior list as well. EXECUTING indicates whether the |
2166 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
2167 | |
2168 | static void | |
0d5b594f | 2169 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 2170 | { |
0d5b594f PA |
2171 | /* In non-stop mode, we assume new found threads are (externally) |
2172 | running until proven otherwise with a stop reply. In all-stop, | |
2173 | we can only get here if all threads are stopped. */ | |
2174 | int running = target_is_non_stop_p () ? 1 : 0; | |
2175 | ||
c906108c SS |
2176 | /* If this is a new thread, add it to GDB's thread list. |
2177 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
2178 | |
2179 | if (in_thread_list (currthread) && is_exited (currthread)) | |
2180 | { | |
2181 | /* We're seeing an event on a thread id we knew had exited. | |
2182 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2183 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2184 | return; |
2185 | } | |
2186 | ||
79d7f229 | 2187 | if (!in_thread_list (currthread)) |
c0a2216e | 2188 | { |
1941c569 | 2189 | struct inferior *inf = NULL; |
bad34192 | 2190 | int pid = ptid_get_pid (currthread); |
1941c569 | 2191 | |
bad34192 PA |
2192 | if (ptid_is_pid (inferior_ptid) |
2193 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
2194 | { |
2195 | /* inferior_ptid has no thread member yet. This can happen | |
2196 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2197 | stub doesn't support qC. This is the first stop reported | |
2198 | after an attach, so this is the main thread. Update the | |
2199 | ptid in the thread list. */ | |
bad34192 PA |
2200 | if (in_thread_list (pid_to_ptid (pid))) |
2201 | thread_change_ptid (inferior_ptid, currthread); | |
2202 | else | |
2203 | { | |
0d5b594f | 2204 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
2205 | inferior_ptid = currthread; |
2206 | } | |
dc146f7c | 2207 | return; |
c0a2216e | 2208 | } |
82f73884 PA |
2209 | |
2210 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
2211 | { |
2212 | /* inferior_ptid is not set yet. This can happen with the | |
2213 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2214 | doesn't support qC. This is the first stop reported | |
2215 | after an attach, so this is the main thread. Update the | |
2216 | ptid in the thread list. */ | |
dc146f7c | 2217 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 2218 | return; |
c0a2216e | 2219 | } |
82f73884 | 2220 | |
29c87f7f PA |
2221 | /* When connecting to a target remote, or to a target |
2222 | extended-remote which already was debugging an inferior, we | |
2223 | may not know about it yet. Add it before adding its child | |
2224 | thread, so notifications are emitted in a sensible order. */ | |
2225 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
2226 | { |
2227 | struct remote_state *rs = get_remote_state (); | |
2228 | int fake_pid_p = !remote_multi_process_p (rs); | |
2229 | ||
2230 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 2231 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 2232 | } |
29c87f7f | 2233 | |
82f73884 | 2234 | /* This is really a new thread. Add it. */ |
0d5b594f | 2235 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
2236 | |
2237 | /* If we found a new inferior, let the common code do whatever | |
2238 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2239 | breakpoints), unless we're just setting up an all-stop |
2240 | connection. */ | |
1941c569 | 2241 | if (inf != NULL) |
b7ea362b PA |
2242 | { |
2243 | struct remote_state *rs = get_remote_state (); | |
2244 | ||
6efcd9a8 | 2245 | if (!rs->starting_up) |
0d5b594f | 2246 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 2247 | } |
c0a2216e | 2248 | } |
c906108c SS |
2249 | } |
2250 | ||
85ad3aaf | 2251 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2252 | |
7aabaf9d SM |
2253 | static remote_thread_info * |
2254 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2255 | { |
85ad3aaf | 2256 | gdb_assert (thread != NULL); |
dc146f7c | 2257 | |
85ad3aaf | 2258 | if (thread->priv == NULL) |
7aabaf9d | 2259 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2260 | |
7aabaf9d | 2261 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2262 | } |
2263 | ||
2264 | /* Return PTID's private thread data, creating it if necessary. */ | |
2265 | ||
7aabaf9d SM |
2266 | static remote_thread_info * |
2267 | get_remote_thread_info (ptid_t ptid) | |
85ad3aaf PA |
2268 | { |
2269 | struct thread_info *info = find_thread_ptid (ptid); | |
2270 | ||
7aabaf9d | 2271 | return get_remote_thread_info (info); |
dc146f7c VP |
2272 | } |
2273 | ||
74531fed PA |
2274 | /* Call this function as a result of |
2275 | 1) A halt indication (T packet) containing a thread id | |
2276 | 2) A direct query of currthread | |
0df8b418 | 2277 | 3) Successful execution of set thread */ |
74531fed PA |
2278 | |
2279 | static void | |
47f8a51d | 2280 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2281 | { |
47f8a51d | 2282 | rs->general_thread = currthread; |
74531fed PA |
2283 | } |
2284 | ||
89be2091 DJ |
2285 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2286 | it can simply pass through to the inferior without reporting. */ | |
2287 | ||
f6ac5f3d PA |
2288 | void |
2289 | remote_target::pass_signals (int numsigs, unsigned char *pass_signals) | |
89be2091 | 2290 | { |
4082afcc | 2291 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2292 | { |
2293 | char *pass_packet, *p; | |
89be2091 | 2294 | int count = 0, i; |
747dc59d | 2295 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
2296 | |
2297 | gdb_assert (numsigs < 256); | |
2298 | for (i = 0; i < numsigs; i++) | |
2299 | { | |
2455069d | 2300 | if (pass_signals[i]) |
89be2091 DJ |
2301 | count++; |
2302 | } | |
224c3ddb | 2303 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2304 | strcpy (pass_packet, "QPassSignals:"); |
2305 | p = pass_packet + strlen (pass_packet); | |
2306 | for (i = 0; i < numsigs; i++) | |
2307 | { | |
2455069d | 2308 | if (pass_signals[i]) |
89be2091 DJ |
2309 | { |
2310 | if (i >= 16) | |
2311 | *p++ = tohex (i >> 4); | |
2312 | *p++ = tohex (i & 15); | |
2313 | if (count) | |
2314 | *p++ = ';'; | |
2315 | else | |
2316 | break; | |
2317 | count--; | |
2318 | } | |
2319 | } | |
2320 | *p = 0; | |
747dc59d | 2321 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2322 | { |
89be2091 DJ |
2323 | putpkt (pass_packet); |
2324 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2325 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2326 | if (rs->last_pass_packet) |
2327 | xfree (rs->last_pass_packet); | |
2328 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2329 | } |
2330 | else | |
2331 | xfree (pass_packet); | |
2332 | } | |
2333 | } | |
2334 | ||
82075af2 JS |
2335 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2336 | to report syscalls to GDB. */ | |
2337 | ||
f6ac5f3d PA |
2338 | int |
2339 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2340 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2341 | { |
b80406ac | 2342 | const char *catch_packet; |
82075af2 JS |
2343 | enum packet_result result; |
2344 | int n_sysno = 0; | |
2345 | ||
2346 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2347 | { | |
2348 | /* Not supported. */ | |
2349 | return 1; | |
2350 | } | |
2351 | ||
649a140c | 2352 | if (needed && any_count == 0) |
82075af2 | 2353 | { |
649a140c PA |
2354 | /* Count how many syscalls are to be caught. */ |
2355 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2356 | { |
649a140c | 2357 | if (syscall_counts[i] != 0) |
82075af2 JS |
2358 | n_sysno++; |
2359 | } | |
2360 | } | |
2361 | ||
2362 | if (remote_debug) | |
2363 | { | |
2364 | fprintf_unfiltered (gdb_stdlog, | |
2365 | "remote_set_syscall_catchpoint " | |
2366 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2367 | pid, needed, any_count, n_sysno); | |
2368 | } | |
2369 | ||
1b81856f | 2370 | std::string built_packet; |
82075af2 JS |
2371 | if (needed) |
2372 | { | |
2373 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2374 | characters for a sysno. If the resulting packet size is too | |
2375 | big, fallback on the non-selective packet. */ | |
2376 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2377 | built_packet.reserve (maxpktsz); |
2378 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2379 | if (any_count == 0) |
82075af2 | 2380 | { |
649a140c PA |
2381 | /* Add in each syscall to be caught. */ |
2382 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2383 | { |
649a140c PA |
2384 | if (syscall_counts[i] != 0) |
2385 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2386 | } |
2387 | } | |
1b81856f | 2388 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2389 | { |
2390 | /* catch_packet too big. Fallback to less efficient | |
2391 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2392 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2393 | } |
b80406ac | 2394 | else |
1b81856f | 2395 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2396 | } |
2397 | else | |
b80406ac | 2398 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2399 | |
b80406ac | 2400 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2401 | |
b80406ac TT |
2402 | putpkt (catch_packet); |
2403 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2404 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2405 | if (result == PACKET_OK) | |
2406 | return 0; | |
2407 | else | |
2408 | return -1; | |
82075af2 JS |
2409 | } |
2410 | ||
9b224c5e PA |
2411 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2412 | signals it should pass through to the inferior when detaching. */ | |
2413 | ||
f6ac5f3d PA |
2414 | void |
2415 | remote_target::program_signals (int numsigs, unsigned char *signals) | |
9b224c5e | 2416 | { |
4082afcc | 2417 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2418 | { |
2419 | char *packet, *p; | |
2420 | int count = 0, i; | |
5e4a05c4 | 2421 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2422 | |
2423 | gdb_assert (numsigs < 256); | |
2424 | for (i = 0; i < numsigs; i++) | |
2425 | { | |
2426 | if (signals[i]) | |
2427 | count++; | |
2428 | } | |
224c3ddb | 2429 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2430 | strcpy (packet, "QProgramSignals:"); |
2431 | p = packet + strlen (packet); | |
2432 | for (i = 0; i < numsigs; i++) | |
2433 | { | |
2434 | if (signal_pass_state (i)) | |
2435 | { | |
2436 | if (i >= 16) | |
2437 | *p++ = tohex (i >> 4); | |
2438 | *p++ = tohex (i & 15); | |
2439 | if (count) | |
2440 | *p++ = ';'; | |
2441 | else | |
2442 | break; | |
2443 | count--; | |
2444 | } | |
2445 | } | |
2446 | *p = 0; | |
5e4a05c4 TT |
2447 | if (!rs->last_program_signals_packet |
2448 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2449 | { |
9b224c5e PA |
2450 | putpkt (packet); |
2451 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2452 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2453 | xfree (rs->last_program_signals_packet); |
2454 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2455 | } |
2456 | else | |
2457 | xfree (packet); | |
2458 | } | |
2459 | } | |
2460 | ||
79d7f229 PA |
2461 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2462 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2463 | thread. If GEN is set, set the general thread, if not, then set | |
2464 | the step/continue thread. */ | |
c906108c | 2465 | static void |
d62a8ae2 | 2466 | set_thread (ptid_t ptid, int gen) |
c906108c | 2467 | { |
d01949b6 | 2468 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2469 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2470 | char *buf = rs->buf; |
79d7f229 | 2471 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2472 | |
79d7f229 | 2473 | if (ptid_equal (state, ptid)) |
c906108c SS |
2474 | return; |
2475 | ||
79d7f229 PA |
2476 | *buf++ = 'H'; |
2477 | *buf++ = gen ? 'g' : 'c'; | |
2478 | if (ptid_equal (ptid, magic_null_ptid)) | |
2479 | xsnprintf (buf, endbuf - buf, "0"); | |
2480 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2481 | xsnprintf (buf, endbuf - buf, "0"); | |
2482 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2483 | xsnprintf (buf, endbuf - buf, "-1"); | |
2484 | else | |
82f73884 | 2485 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2486 | putpkt (rs->buf); |
6d820c5c | 2487 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2488 | if (gen) |
47f8a51d | 2489 | rs->general_thread = ptid; |
c906108c | 2490 | else |
47f8a51d | 2491 | rs->continue_thread = ptid; |
c906108c | 2492 | } |
79d7f229 PA |
2493 | |
2494 | static void | |
d62a8ae2 | 2495 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2496 | { |
2497 | set_thread (ptid, 1); | |
2498 | } | |
2499 | ||
2500 | static void | |
d62a8ae2 | 2501 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2502 | { |
2503 | set_thread (ptid, 0); | |
2504 | } | |
2505 | ||
3c9c4b83 PA |
2506 | /* Change the remote current process. Which thread within the process |
2507 | ends up selected isn't important, as long as it is the same process | |
2508 | as what INFERIOR_PTID points to. | |
2509 | ||
2510 | This comes from that fact that there is no explicit notion of | |
2511 | "selected process" in the protocol. The selected process for | |
2512 | general operations is the process the selected general thread | |
2513 | belongs to. */ | |
2514 | ||
2515 | static void | |
2516 | set_general_process (void) | |
2517 | { | |
2518 | struct remote_state *rs = get_remote_state (); | |
2519 | ||
2520 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2521 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2522 | return; |
2523 | ||
2524 | /* We only need to change the remote current thread if it's pointing | |
2525 | at some other process. */ | |
47f8a51d | 2526 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2527 | set_general_thread (inferior_ptid); |
2528 | } | |
2529 | ||
c906108c | 2530 | \f |
7d1a114c PA |
2531 | /* Return nonzero if this is the main thread that we made up ourselves |
2532 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2533 | |
2534 | static int | |
f6ac5f3d | 2535 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2536 | { |
c0a2216e PA |
2537 | if (ptid_equal (ptid, magic_null_ptid)) |
2538 | /* The main thread is always alive. */ | |
2539 | return 1; | |
2540 | ||
ba348170 | 2541 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2542 | /* The main thread is always alive. This can happen after a |
2543 | vAttach, if the remote side doesn't support | |
2544 | multi-threading. */ | |
2545 | return 1; | |
2546 | ||
7d1a114c PA |
2547 | return 0; |
2548 | } | |
2549 | ||
2550 | /* Return nonzero if the thread PTID is still alive on the remote | |
2551 | system. */ | |
2552 | ||
57810aa7 | 2553 | bool |
f6ac5f3d | 2554 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2555 | { |
2556 | struct remote_state *rs = get_remote_state (); | |
2557 | char *p, *endp; | |
2558 | ||
2559 | /* Check if this is a thread that we made up ourselves to model | |
2560 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2561 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2562 | return 1; |
2563 | ||
82f73884 PA |
2564 | p = rs->buf; |
2565 | endp = rs->buf + get_remote_packet_size (); | |
2566 | ||
2567 | *p++ = 'T'; | |
2568 | write_ptid (p, endp, ptid); | |
2569 | ||
2e9f7625 | 2570 | putpkt (rs->buf); |
6d820c5c | 2571 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2572 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2573 | } |
2574 | ||
79efa585 SM |
2575 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2576 | The thread_info object owns the memory for the name. */ | |
2577 | ||
f6ac5f3d PA |
2578 | const char * |
2579 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2580 | { |
2581 | if (info->priv != NULL) | |
a9334058 SM |
2582 | { |
2583 | const std::string &name = get_remote_thread_info (info)->name; | |
2584 | return !name.empty () ? name.c_str () : NULL; | |
2585 | } | |
79efa585 SM |
2586 | |
2587 | return NULL; | |
2588 | } | |
2589 | ||
c906108c SS |
2590 | /* About these extended threadlist and threadinfo packets. They are |
2591 | variable length packets but, the fields within them are often fixed | |
2592 | length. They are redundent enough to send over UDP as is the | |
2593 | remote protocol in general. There is a matching unit test module | |
2594 | in libstub. */ | |
2595 | ||
23860348 | 2596 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2597 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2598 | changable. */ |
cce74817 JM |
2599 | |
2600 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2601 | Plan to fix this. */ |
cce74817 | 2602 | |
23860348 | 2603 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2604 | |
9d1f7ab2 | 2605 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2606 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2607 | |
2608 | struct gdb_ext_thread_info | |
c5aa993b | 2609 | { |
23860348 | 2610 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2611 | int active; /* Has state interesting to GDB? |
23860348 | 2612 | regs, stack. */ |
2bc416ba | 2613 | char display[256]; /* Brief state display, name, |
cedea757 | 2614 | blocked/suspended. */ |
23860348 | 2615 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2616 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2617 | whatever. */ |
c5aa993b | 2618 | }; |
cce74817 JM |
2619 | |
2620 | /* The volume of remote transfers can be limited by submitting | |
2621 | a mask containing bits specifying the desired information. | |
2622 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2623 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2624 | |
2625 | #define TAG_THREADID 1 | |
2626 | #define TAG_EXISTS 2 | |
2627 | #define TAG_DISPLAY 4 | |
2628 | #define TAG_THREADNAME 8 | |
c5aa993b | 2629 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2630 | |
23860348 | 2631 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2632 | |
a14ed312 | 2633 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2634 | |
a14ed312 | 2635 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2636 | |
a14ed312 | 2637 | static char *pack_int (char *buf, int value); |
cce74817 | 2638 | |
a14ed312 | 2639 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2640 | |
a14ed312 | 2641 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2642 | |
23860348 | 2643 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2644 | |
23860348 | 2645 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2646 | |
23860348 | 2647 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2648 | |
23860348 | 2649 | static int threadref_to_int (threadref *ref); |
cce74817 | 2650 | |
23860348 | 2651 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2652 | |
23860348 | 2653 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2654 | |
2bc416ba | 2655 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2656 | threadref *id); |
cce74817 | 2657 | |
a14ed312 | 2658 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2659 | threadref *expectedref, |
a14ed312 KB |
2660 | struct gdb_ext_thread_info |
2661 | *info); | |
cce74817 JM |
2662 | |
2663 | ||
2bc416ba | 2664 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2665 | int fieldset, /*TAG mask */ |
a14ed312 | 2666 | struct gdb_ext_thread_info *info); |
cce74817 | 2667 | |
a14ed312 KB |
2668 | static char *pack_threadlist_request (char *pkt, int startflag, |
2669 | int threadcount, | |
23860348 | 2670 | threadref *nextthread); |
cce74817 | 2671 | |
a14ed312 KB |
2672 | static int parse_threadlist_response (char *pkt, |
2673 | int result_limit, | |
23860348 | 2674 | threadref *original_echo, |
2bc416ba | 2675 | threadref *resultlist, |
23860348 | 2676 | int *doneflag); |
cce74817 | 2677 | |
a14ed312 | 2678 | static int remote_get_threadlist (int startflag, |
23860348 | 2679 | threadref *nextthread, |
a14ed312 KB |
2680 | int result_limit, |
2681 | int *done, | |
2bc416ba | 2682 | int *result_count, |
23860348 | 2683 | threadref *threadlist); |
cce74817 | 2684 | |
23860348 | 2685 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2686 | |
a14ed312 KB |
2687 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2688 | void *context, int looplimit); | |
cce74817 | 2689 | |
23860348 | 2690 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2691 | |
82f73884 PA |
2692 | |
2693 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2694 | buffer we're allowed to write to. Returns | |
2695 | BUF+CHARACTERS_WRITTEN. */ | |
2696 | ||
2697 | static char * | |
2698 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2699 | { | |
2700 | int pid, tid; | |
2701 | struct remote_state *rs = get_remote_state (); | |
2702 | ||
2703 | if (remote_multi_process_p (rs)) | |
2704 | { | |
2705 | pid = ptid_get_pid (ptid); | |
2706 | if (pid < 0) | |
2707 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2708 | else | |
2709 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2710 | } | |
ba348170 | 2711 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2712 | if (tid < 0) |
2713 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2714 | else | |
2715 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2716 | ||
2717 | return buf; | |
2718 | } | |
2719 | ||
256642e8 PA |
2720 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2721 | last parsed char. Returns null_ptid if no thread id is found, and | |
2722 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2723 | |
2724 | static ptid_t | |
256642e8 | 2725 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2726 | { |
256642e8 PA |
2727 | const char *p = buf; |
2728 | const char *pp; | |
82f73884 | 2729 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2730 | |
2731 | if (*p == 'p') | |
2732 | { | |
2733 | /* Multi-process ptid. */ | |
2734 | pp = unpack_varlen_hex (p + 1, &pid); | |
2735 | if (*pp != '.') | |
b37520b6 | 2736 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2737 | |
2738 | p = pp; | |
2739 | pp = unpack_varlen_hex (p + 1, &tid); | |
2740 | if (obuf) | |
2741 | *obuf = pp; | |
ba348170 | 2742 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2743 | } |
2744 | ||
2745 | /* No multi-process. Just a tid. */ | |
2746 | pp = unpack_varlen_hex (p, &tid); | |
2747 | ||
c9f35b34 KB |
2748 | /* Return null_ptid when no thread id is found. */ |
2749 | if (p == pp) | |
2750 | { | |
2751 | if (obuf) | |
2752 | *obuf = pp; | |
2753 | return null_ptid; | |
2754 | } | |
2755 | ||
82f73884 | 2756 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2757 | what's in inferior_ptid, unless it's null at this point. If so, |
2758 | then since there's no way to know the pid of the reported | |
2759 | threads, use the magic number. */ | |
2760 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2761 | pid = ptid_get_pid (magic_null_ptid); | |
2762 | else | |
2763 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2764 | |
2765 | if (obuf) | |
2766 | *obuf = pp; | |
ba348170 | 2767 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2768 | } |
2769 | ||
c906108c | 2770 | static int |
fba45db2 | 2771 | stubhex (int ch) |
c906108c SS |
2772 | { |
2773 | if (ch >= 'a' && ch <= 'f') | |
2774 | return ch - 'a' + 10; | |
2775 | if (ch >= '0' && ch <= '9') | |
2776 | return ch - '0'; | |
2777 | if (ch >= 'A' && ch <= 'F') | |
2778 | return ch - 'A' + 10; | |
2779 | return -1; | |
2780 | } | |
2781 | ||
2782 | static int | |
fba45db2 | 2783 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2784 | { |
2785 | int nibble; | |
2786 | int retval = 0; | |
2787 | ||
2788 | while (fieldlength) | |
2789 | { | |
2790 | nibble = stubhex (*buff++); | |
2791 | retval |= nibble; | |
2792 | fieldlength--; | |
2793 | if (fieldlength) | |
2794 | retval = retval << 4; | |
2795 | } | |
2796 | return retval; | |
2797 | } | |
2798 | ||
c906108c | 2799 | static char * |
fba45db2 | 2800 | unpack_nibble (char *buf, int *val) |
c906108c | 2801 | { |
b7589f7d | 2802 | *val = fromhex (*buf++); |
c906108c SS |
2803 | return buf; |
2804 | } | |
2805 | ||
c906108c | 2806 | static char * |
fba45db2 | 2807 | unpack_byte (char *buf, int *value) |
c906108c SS |
2808 | { |
2809 | *value = stub_unpack_int (buf, 2); | |
2810 | return buf + 2; | |
2811 | } | |
2812 | ||
2813 | static char * | |
fba45db2 | 2814 | pack_int (char *buf, int value) |
c906108c SS |
2815 | { |
2816 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2817 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2818 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2819 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2820 | return buf; | |
2821 | } | |
2822 | ||
2823 | static char * | |
fba45db2 | 2824 | unpack_int (char *buf, int *value) |
c906108c SS |
2825 | { |
2826 | *value = stub_unpack_int (buf, 8); | |
2827 | return buf + 8; | |
2828 | } | |
2829 | ||
23860348 | 2830 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2831 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2832 | |
2833 | static char * | |
fba45db2 | 2834 | pack_string (char *pkt, char *string) |
c906108c SS |
2835 | { |
2836 | char ch; | |
2837 | int len; | |
2838 | ||
2839 | len = strlen (string); | |
2840 | if (len > 200) | |
23860348 | 2841 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2842 | pkt = pack_hex_byte (pkt, len); |
2843 | while (len-- > 0) | |
2844 | { | |
2845 | ch = *string++; | |
2846 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2847 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2848 | *pkt++ = ch; |
2849 | } | |
2850 | return pkt; | |
2851 | } | |
2852 | #endif /* 0 (unused) */ | |
2853 | ||
2854 | static char * | |
fba45db2 | 2855 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2856 | { |
2857 | while (length--) | |
2858 | *dest++ = *src++; | |
2859 | *dest = '\0'; | |
2860 | return src; | |
2861 | } | |
2862 | ||
2863 | static char * | |
fba45db2 | 2864 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2865 | { |
2866 | char *limit; | |
2867 | unsigned char *altid; | |
2868 | ||
2869 | altid = (unsigned char *) id; | |
2870 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2871 | while (pkt < limit) | |
2872 | pkt = pack_hex_byte (pkt, *altid++); | |
2873 | return pkt; | |
2874 | } | |
2875 | ||
2876 | ||
2877 | static char * | |
fba45db2 | 2878 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2879 | { |
2880 | char *altref; | |
2881 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2882 | int x, y; | |
2883 | ||
2884 | altref = (char *) id; | |
2885 | ||
2886 | while (inbuf < limit) | |
2887 | { | |
2888 | x = stubhex (*inbuf++); | |
2889 | y = stubhex (*inbuf++); | |
2890 | *altref++ = (x << 4) | y; | |
2891 | } | |
2892 | return inbuf; | |
2893 | } | |
2894 | ||
2895 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2896 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2897 | to use 64bit thread references internally. This is an adapter |
2898 | function. */ | |
2899 | ||
2900 | void | |
fba45db2 | 2901 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2902 | { |
2903 | unsigned char *scan; | |
2904 | ||
2905 | scan = (unsigned char *) id; | |
2906 | { | |
2907 | int i = 4; | |
2908 | while (i--) | |
2909 | *scan++ = 0; | |
2910 | } | |
2911 | *scan++ = (value >> 24) & 0xff; | |
2912 | *scan++ = (value >> 16) & 0xff; | |
2913 | *scan++ = (value >> 8) & 0xff; | |
2914 | *scan++ = (value & 0xff); | |
2915 | } | |
2916 | ||
2917 | static int | |
fba45db2 | 2918 | threadref_to_int (threadref *ref) |
c906108c SS |
2919 | { |
2920 | int i, value = 0; | |
2921 | unsigned char *scan; | |
2922 | ||
cfd77fa1 | 2923 | scan = *ref; |
c906108c SS |
2924 | scan += 4; |
2925 | i = 4; | |
2926 | while (i-- > 0) | |
2927 | value = (value << 8) | ((*scan++) & 0xff); | |
2928 | return value; | |
2929 | } | |
2930 | ||
2931 | static void | |
fba45db2 | 2932 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2933 | { |
2934 | int i; | |
2935 | unsigned char *csrc, *cdest; | |
2936 | ||
2937 | csrc = (unsigned char *) src; | |
2938 | cdest = (unsigned char *) dest; | |
2939 | i = 8; | |
2940 | while (i--) | |
2941 | *cdest++ = *csrc++; | |
2942 | } | |
2943 | ||
2944 | static int | |
fba45db2 | 2945 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2946 | { |
23860348 | 2947 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2948 | #if 0 |
2949 | unsigned char *srcp, *destp; | |
2950 | int i, result; | |
2951 | srcp = (char *) src; | |
2952 | destp = (char *) dest; | |
2953 | ||
2954 | result = 1; | |
2955 | while (i-- > 0) | |
2956 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2957 | return result; | |
2958 | #endif | |
2959 | return 1; | |
2960 | } | |
2961 | ||
2962 | /* | |
c5aa993b JM |
2963 | threadid:1, # always request threadid |
2964 | context_exists:2, | |
2965 | display:4, | |
2966 | unique_name:8, | |
2967 | more_display:16 | |
2968 | */ | |
c906108c SS |
2969 | |
2970 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2971 | ||
2972 | static char * | |
fba45db2 | 2973 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2974 | { |
23860348 MS |
2975 | *pkt++ = 'q'; /* Info Query */ |
2976 | *pkt++ = 'P'; /* process or thread info */ | |
2977 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2978 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2979 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2980 | return pkt; |
2981 | } | |
2982 | ||
23860348 | 2983 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2984 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2985 | add more fields as time goes by. */ |
c906108c | 2986 | |
23860348 | 2987 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2988 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2989 | fetch registers and its stack? */ |
c5aa993b | 2990 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2991 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2992 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2993 | the process. */ |
c906108c SS |
2994 | |
2995 | static int | |
fba45db2 KB |
2996 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2997 | struct gdb_ext_thread_info *info) | |
c906108c | 2998 | { |
d01949b6 | 2999 | struct remote_state *rs = get_remote_state (); |
c906108c | 3000 | int mask, length; |
cfd77fa1 | 3001 | int tag; |
c906108c | 3002 | threadref ref; |
6d820c5c | 3003 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
3004 | int retval = 1; |
3005 | ||
23860348 | 3006 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3007 | info->active = 0; |
3008 | info->display[0] = '\0'; | |
3009 | info->shortname[0] = '\0'; | |
3010 | info->more_display[0] = '\0'; | |
3011 | ||
23860348 MS |
3012 | /* Assume the characters indicating the packet type have been |
3013 | stripped. */ | |
c906108c SS |
3014 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3015 | pkt = unpack_threadid (pkt, &ref); | |
3016 | ||
3017 | if (mask == 0) | |
8a3fe4f8 | 3018 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3019 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3020 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3021 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3022 | return 0; |
3023 | } | |
3024 | copy_threadref (&info->threadid, &ref); | |
3025 | ||
23860348 | 3026 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 3027 | |
23860348 MS |
3028 | /* Packets are terminated with nulls. */ |
3029 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3030 | { |
3031 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3032 | pkt = unpack_byte (pkt, &length); /* length */ |
3033 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3034 | { |
8a3fe4f8 | 3035 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3036 | retval = 0; |
3037 | break; | |
3038 | } | |
3039 | if (tag == TAG_THREADID) | |
3040 | { | |
3041 | if (length != 16) | |
3042 | { | |
8a3fe4f8 | 3043 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3044 | retval = 0; |
3045 | break; | |
3046 | } | |
3047 | pkt = unpack_threadid (pkt, &ref); | |
3048 | mask = mask & ~TAG_THREADID; | |
3049 | continue; | |
3050 | } | |
3051 | if (tag == TAG_EXISTS) | |
3052 | { | |
3053 | info->active = stub_unpack_int (pkt, length); | |
3054 | pkt += length; | |
3055 | mask = mask & ~(TAG_EXISTS); | |
3056 | if (length > 8) | |
3057 | { | |
8a3fe4f8 | 3058 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3059 | retval = 0; |
3060 | break; | |
3061 | } | |
3062 | continue; | |
3063 | } | |
3064 | if (tag == TAG_THREADNAME) | |
3065 | { | |
3066 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3067 | mask = mask & ~TAG_THREADNAME; | |
3068 | continue; | |
3069 | } | |
3070 | if (tag == TAG_DISPLAY) | |
3071 | { | |
3072 | pkt = unpack_string (pkt, &info->display[0], length); | |
3073 | mask = mask & ~TAG_DISPLAY; | |
3074 | continue; | |
3075 | } | |
3076 | if (tag == TAG_MOREDISPLAY) | |
3077 | { | |
3078 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3079 | mask = mask & ~TAG_MOREDISPLAY; | |
3080 | continue; | |
3081 | } | |
8a3fe4f8 | 3082 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3083 | break; /* Not a tag we know about. */ |
c906108c SS |
3084 | } |
3085 | return retval; | |
3086 | } | |
3087 | ||
3088 | static int | |
fba45db2 KB |
3089 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
3090 | struct gdb_ext_thread_info *info) | |
c906108c | 3091 | { |
d01949b6 | 3092 | struct remote_state *rs = get_remote_state (); |
c906108c | 3093 | int result; |
c906108c | 3094 | |
2e9f7625 DJ |
3095 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
3096 | putpkt (rs->buf); | |
6d820c5c | 3097 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
3098 | |
3099 | if (rs->buf[0] == '\0') | |
3100 | return 0; | |
3101 | ||
2e9f7625 | 3102 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 3103 | threadid, info); |
c906108c SS |
3104 | return result; |
3105 | } | |
3106 | ||
c906108c SS |
3107 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3108 | ||
3109 | static char * | |
fba45db2 KB |
3110 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3111 | threadref *nextthread) | |
c906108c SS |
3112 | { |
3113 | *pkt++ = 'q'; /* info query packet */ | |
3114 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3115 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3116 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3117 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3118 | *pkt = '\0'; | |
3119 | return pkt; | |
3120 | } | |
3121 | ||
3122 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3123 | ||
3124 | static int | |
fba45db2 KB |
3125 | parse_threadlist_response (char *pkt, int result_limit, |
3126 | threadref *original_echo, threadref *resultlist, | |
3127 | int *doneflag) | |
c906108c | 3128 | { |
d01949b6 | 3129 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3130 | char *limit; |
3131 | int count, resultcount, done; | |
3132 | ||
3133 | resultcount = 0; | |
3134 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 3135 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 3136 | /* done parse past here */ |
c906108c SS |
3137 | pkt = unpack_byte (pkt, &count); /* count field */ |
3138 | pkt = unpack_nibble (pkt, &done); | |
3139 | /* The first threadid is the argument threadid. */ | |
3140 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3141 | while ((count-- > 0) && (pkt < limit)) | |
3142 | { | |
3143 | pkt = unpack_threadid (pkt, resultlist++); | |
3144 | if (resultcount++ >= result_limit) | |
3145 | break; | |
3146 | } | |
3147 | if (doneflag) | |
3148 | *doneflag = done; | |
3149 | return resultcount; | |
3150 | } | |
3151 | ||
6dc54d91 PA |
3152 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3153 | qL packet is not supported, 0 on error and 1 on success. */ | |
3154 | ||
c906108c | 3155 | static int |
fba45db2 KB |
3156 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
3157 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 3158 | { |
d01949b6 | 3159 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3160 | int result = 1; |
3161 | ||
23860348 | 3162 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3163 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3164 | >= get_remote_packet_size ()) | |
ea9c271d | 3165 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3166 | |
6d820c5c DJ |
3167 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
3168 | putpkt (rs->buf); | |
3169 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 3170 | if (*rs->buf == '\0') |
6dc54d91 PA |
3171 | { |
3172 | /* Packet not supported. */ | |
3173 | return -1; | |
3174 | } | |
3175 | ||
3176 | *result_count = | |
3177 | parse_threadlist_response (rs->buf + 2, result_limit, | |
3178 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 3179 | |
0d031856 | 3180 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3181 | { |
23860348 MS |
3182 | /* FIXME: This is a good reason to drop the packet. */ |
3183 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
3184 | /* Possabilities : |
3185 | retransmit immediatly - race conditions | |
3186 | retransmit after timeout - yes | |
3187 | exit | |
3188 | wait for packet, then exit | |
3189 | */ | |
8a3fe4f8 | 3190 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3191 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3192 | } |
3193 | if (*result_count <= 0) | |
3194 | { | |
3195 | if (*done != 1) | |
3196 | { | |
8a3fe4f8 | 3197 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3198 | result = 0; |
3199 | } | |
3200 | return result; /* break; */ | |
3201 | } | |
3202 | if (*result_count > result_limit) | |
3203 | { | |
3204 | *result_count = 0; | |
8a3fe4f8 | 3205 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3206 | return 0; |
3207 | } | |
3208 | return result; | |
3209 | } | |
3210 | ||
6dc54d91 PA |
3211 | /* Fetch the list of remote threads, with the qL packet, and call |
3212 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3213 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3214 | STEPFUNCTION returns false. If the packet is not supported, | |
3215 | returns -1. */ | |
c906108c | 3216 | |
c906108c | 3217 | static int |
fba45db2 KB |
3218 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
3219 | int looplimit) | |
c906108c | 3220 | { |
0d031856 | 3221 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3222 | int done, i, result_count; |
3223 | int startflag = 1; | |
3224 | int result = 1; | |
3225 | int loopcount = 0; | |
c906108c SS |
3226 | |
3227 | done = 0; | |
3228 | while (!done) | |
3229 | { | |
3230 | if (loopcount++ > looplimit) | |
3231 | { | |
3232 | result = 0; | |
8a3fe4f8 | 3233 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3234 | break; |
3235 | } | |
6dc54d91 PA |
3236 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3237 | MAXTHREADLISTRESULTS, | |
3238 | &done, &result_count, | |
3239 | rs->resultthreadlist); | |
3240 | if (result <= 0) | |
3241 | break; | |
23860348 | 3242 | /* Clear for later iterations. */ |
c906108c SS |
3243 | startflag = 0; |
3244 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3245 | if (result_count >= 1) | |
0d031856 TT |
3246 | copy_threadref (&rs->nextthread, |
3247 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3248 | i = 0; |
3249 | while (result_count--) | |
6dc54d91 PA |
3250 | { |
3251 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3252 | { | |
3253 | result = 0; | |
3254 | break; | |
3255 | } | |
3256 | } | |
c906108c SS |
3257 | } |
3258 | return result; | |
3259 | } | |
3260 | ||
6dc54d91 PA |
3261 | /* A thread found on the remote target. */ |
3262 | ||
21fe1c75 | 3263 | struct thread_item |
6dc54d91 | 3264 | { |
21fe1c75 SM |
3265 | explicit thread_item (ptid_t ptid_) |
3266 | : ptid (ptid_) | |
3267 | {} | |
3268 | ||
3269 | thread_item (thread_item &&other) = default; | |
3270 | thread_item &operator= (thread_item &&other) = default; | |
3271 | ||
3272 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3273 | ||
6dc54d91 PA |
3274 | /* The thread's PTID. */ |
3275 | ptid_t ptid; | |
3276 | ||
21fe1c75 SM |
3277 | /* The thread's extra info. */ |
3278 | std::string extra; | |
6dc54d91 | 3279 | |
21fe1c75 SM |
3280 | /* The thread's name. */ |
3281 | std::string name; | |
79efa585 | 3282 | |
6dc54d91 | 3283 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3284 | int core = -1; |
f6327dcb KB |
3285 | |
3286 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3287 | gdb::byte_vector thread_handle; |
21fe1c75 | 3288 | }; |
6dc54d91 PA |
3289 | |
3290 | /* Context passed around to the various methods listing remote | |
3291 | threads. As new threads are found, they're added to the ITEMS | |
3292 | vector. */ | |
3293 | ||
3294 | struct threads_listing_context | |
3295 | { | |
21fe1c75 SM |
3296 | /* Return true if this object contains an entry for a thread with ptid |
3297 | PTID. */ | |
6dc54d91 | 3298 | |
21fe1c75 SM |
3299 | bool contains_thread (ptid_t ptid) const |
3300 | { | |
3301 | auto match_ptid = [&] (const thread_item &item) | |
3302 | { | |
3303 | return item.ptid == ptid; | |
3304 | }; | |
80134cf5 | 3305 | |
21fe1c75 SM |
3306 | auto it = std::find_if (this->items.begin (), |
3307 | this->items.end (), | |
3308 | match_ptid); | |
80134cf5 | 3309 | |
21fe1c75 SM |
3310 | return it != this->items.end (); |
3311 | } | |
80134cf5 | 3312 | |
21fe1c75 | 3313 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3314 | |
21fe1c75 SM |
3315 | void remove_thread (ptid_t ptid) |
3316 | { | |
3317 | auto match_ptid = [&] (const thread_item &item) | |
3318 | { | |
3319 | return item.ptid == ptid; | |
3320 | }; | |
cbb8991c | 3321 | |
21fe1c75 SM |
3322 | auto it = std::remove_if (this->items.begin (), |
3323 | this->items.end (), | |
3324 | match_ptid); | |
cbb8991c | 3325 | |
21fe1c75 SM |
3326 | if (it != this->items.end ()) |
3327 | this->items.erase (it); | |
3328 | } | |
3329 | ||
3330 | /* The threads found on the remote target. */ | |
3331 | std::vector<thread_item> items; | |
3332 | }; | |
cbb8991c | 3333 | |
c906108c | 3334 | static int |
6dc54d91 | 3335 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3336 | { |
19ba03f4 SM |
3337 | struct threads_listing_context *context |
3338 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3339 | int pid = inferior_ptid.pid (); |
3340 | int lwp = threadref_to_int (ref); | |
3341 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3342 | |
21fe1c75 | 3343 | context->items.emplace_back (ptid); |
6dc54d91 | 3344 | |
c906108c SS |
3345 | return 1; /* continue iterator */ |
3346 | } | |
3347 | ||
3348 | #define CRAZY_MAX_THREADS 1000 | |
3349 | ||
39f77062 KB |
3350 | static ptid_t |
3351 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3352 | { |
d01949b6 | 3353 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3354 | |
3355 | putpkt ("qC"); | |
6d820c5c | 3356 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3357 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3358 | { |
256642e8 | 3359 | const char *obuf; |
c9f35b34 KB |
3360 | ptid_t result; |
3361 | ||
3362 | result = read_ptid (&rs->buf[2], &obuf); | |
3363 | if (*obuf != '\0' && remote_debug) | |
3364 | fprintf_unfiltered (gdb_stdlog, | |
3365 | "warning: garbage in qC reply\n"); | |
3366 | ||
3367 | return result; | |
3368 | } | |
c906108c SS |
3369 | else |
3370 | return oldpid; | |
3371 | } | |
3372 | ||
6dc54d91 | 3373 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3374 | |
6dc54d91 PA |
3375 | static int |
3376 | remote_get_threads_with_ql (struct target_ops *ops, | |
3377 | struct threads_listing_context *context) | |
c906108c | 3378 | { |
6dc54d91 PA |
3379 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3380 | CRAZY_MAX_THREADS) >= 0) | |
3381 | return 1; | |
3382 | ||
3383 | return 0; | |
c906108c SS |
3384 | } |
3385 | ||
dc146f7c VP |
3386 | #if defined(HAVE_LIBEXPAT) |
3387 | ||
dc146f7c VP |
3388 | static void |
3389 | start_thread (struct gdb_xml_parser *parser, | |
3390 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3391 | void *user_data, |
3392 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3393 | { |
19ba03f4 SM |
3394 | struct threads_listing_context *data |
3395 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3396 | struct gdb_xml_value *attr; |
dc146f7c | 3397 | |
4d0fdd9b | 3398 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3399 | ptid_t ptid = read_ptid (id, NULL); |
3400 | ||
3401 | data->items.emplace_back (ptid); | |
3402 | thread_item &item = data->items.back (); | |
dc146f7c | 3403 | |
3d2c1d41 PA |
3404 | attr = xml_find_attribute (attributes, "core"); |
3405 | if (attr != NULL) | |
4d0fdd9b | 3406 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3407 | |
79efa585 | 3408 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3409 | if (attr != NULL) |
4d0fdd9b | 3410 | item.name = (const char *) attr->value.get (); |
79efa585 | 3411 | |
f6327dcb KB |
3412 | attr = xml_find_attribute (attributes, "handle"); |
3413 | if (attr != NULL) | |
4d0fdd9b | 3414 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3415 | } |
3416 | ||
3417 | static void | |
3418 | end_thread (struct gdb_xml_parser *parser, | |
3419 | const struct gdb_xml_element *element, | |
3420 | void *user_data, const char *body_text) | |
3421 | { | |
19ba03f4 SM |
3422 | struct threads_listing_context *data |
3423 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3424 | |
21fe1c75 SM |
3425 | if (body_text != NULL && *body_text != '\0') |
3426 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3427 | } |
3428 | ||
3429 | const struct gdb_xml_attribute thread_attributes[] = { | |
3430 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3431 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3432 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3433 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3434 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3435 | }; | |
3436 | ||
3437 | const struct gdb_xml_element thread_children[] = { | |
3438 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3439 | }; | |
3440 | ||
3441 | const struct gdb_xml_element threads_children[] = { | |
3442 | { "thread", thread_attributes, thread_children, | |
3443 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3444 | start_thread, end_thread }, | |
3445 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3446 | }; | |
3447 | ||
3448 | const struct gdb_xml_element threads_elements[] = { | |
3449 | { "threads", NULL, threads_children, | |
3450 | GDB_XML_EF_NONE, NULL, NULL }, | |
3451 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3452 | }; | |
3453 | ||
3454 | #endif | |
3455 | ||
6dc54d91 | 3456 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3457 | |
6dc54d91 PA |
3458 | static int |
3459 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3460 | struct threads_listing_context *context) | |
0f71a2f6 | 3461 | { |
dc146f7c | 3462 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3463 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3464 | { |
9018be22 | 3465 | gdb::optional<gdb::char_vector> xml |
b7b030ad | 3466 | = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3467 | |
9018be22 | 3468 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3469 | { |
6dc54d91 | 3470 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3471 | threads_elements, xml->data (), context); |
dc146f7c VP |
3472 | } |
3473 | ||
6dc54d91 | 3474 | return 1; |
dc146f7c VP |
3475 | } |
3476 | #endif | |
3477 | ||
6dc54d91 PA |
3478 | return 0; |
3479 | } | |
3480 | ||
3481 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3482 | ||
3483 | static int | |
3484 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3485 | struct threads_listing_context *context) | |
3486 | { | |
3487 | struct remote_state *rs = get_remote_state (); | |
3488 | ||
b80fafe3 | 3489 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3490 | { |
256642e8 | 3491 | const char *bufp; |
6dc54d91 | 3492 | |
9d1f7ab2 | 3493 | putpkt ("qfThreadInfo"); |
6d820c5c | 3494 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3495 | bufp = rs->buf; |
9d1f7ab2 | 3496 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3497 | { |
9d1f7ab2 MS |
3498 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3499 | { | |
3500 | do | |
3501 | { | |
21fe1c75 SM |
3502 | ptid_t ptid = read_ptid (bufp, &bufp); |
3503 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3504 | } |
3505 | while (*bufp++ == ','); /* comma-separated list */ | |
3506 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3507 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3508 | bufp = rs->buf; |
9d1f7ab2 | 3509 | } |
6dc54d91 PA |
3510 | return 1; |
3511 | } | |
3512 | else | |
3513 | { | |
3514 | /* Packet not recognized. */ | |
3515 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3516 | } |
3517 | } | |
3518 | ||
6dc54d91 PA |
3519 | return 0; |
3520 | } | |
3521 | ||
e8032dde | 3522 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3523 | targets. */ |
3524 | ||
f6ac5f3d PA |
3525 | void |
3526 | remote_target::update_thread_list () | |
6dc54d91 | 3527 | { |
6dc54d91 | 3528 | struct threads_listing_context context; |
ab970af1 | 3529 | int got_list = 0; |
e8032dde | 3530 | |
6dc54d91 PA |
3531 | /* We have a few different mechanisms to fetch the thread list. Try |
3532 | them all, starting with the most preferred one first, falling | |
3533 | back to older methods. */ | |
f6ac5f3d PA |
3534 | if (remote_get_threads_with_qxfer (this, &context) |
3535 | || remote_get_threads_with_qthreadinfo (this, &context) | |
3536 | || remote_get_threads_with_ql (this, &context)) | |
6dc54d91 | 3537 | { |
ab970af1 PA |
3538 | struct thread_info *tp, *tmp; |
3539 | ||
3540 | got_list = 1; | |
3541 | ||
21fe1c75 | 3542 | if (context.items.empty () |
f6ac5f3d | 3543 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3544 | { |
3545 | /* Some targets don't really support threads, but still | |
3546 | reply an (empty) thread list in response to the thread | |
3547 | listing packets, instead of replying "packet not | |
3548 | supported". Exit early so we don't delete the main | |
3549 | thread. */ | |
7d1a114c PA |
3550 | return; |
3551 | } | |
3552 | ||
ab970af1 PA |
3553 | /* CONTEXT now holds the current thread list on the remote |
3554 | target end. Delete GDB-side threads no longer found on the | |
3555 | target. */ | |
8a06aea7 | 3556 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3557 | { |
21fe1c75 | 3558 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3559 | { |
3560 | /* Not found. */ | |
3561 | delete_thread (tp->ptid); | |
3562 | } | |
cbb8991c DB |
3563 | } |
3564 | ||
3565 | /* Remove any unreported fork child threads from CONTEXT so | |
3566 | that we don't interfere with follow fork, which is where | |
3567 | creation of such threads is handled. */ | |
3568 | remove_new_fork_children (&context); | |
74531fed | 3569 | |
ab970af1 | 3570 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3571 | for (thread_item &item : context.items) |
6dc54d91 | 3572 | { |
21fe1c75 | 3573 | if (item.ptid != null_ptid) |
6dc54d91 | 3574 | { |
6dc54d91 | 3575 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3576 | executing until proven otherwise with a stop reply. |
3577 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3578 | stopped. */ |
0d5b594f | 3579 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3580 | |
21fe1c75 | 3581 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3582 | |
7aabaf9d | 3583 | remote_thread_info *info = get_remote_thread_info (item.ptid); |
21fe1c75 | 3584 | info->core = item.core; |
7aabaf9d SM |
3585 | info->extra = std::move (item.extra); |
3586 | info->name = std::move (item.name); | |
3587 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3588 | } |
3589 | } | |
3590 | } | |
3591 | ||
ab970af1 PA |
3592 | if (!got_list) |
3593 | { | |
3594 | /* If no thread listing method is supported, then query whether | |
3595 | each known thread is alive, one by one, with the T packet. | |
3596 | If the target doesn't support threads at all, then this is a | |
3597 | no-op. See remote_thread_alive. */ | |
3598 | prune_threads (); | |
3599 | } | |
9d1f7ab2 MS |
3600 | } |
3601 | ||
802188a7 | 3602 | /* |
9d1f7ab2 MS |
3603 | * Collect a descriptive string about the given thread. |
3604 | * The target may say anything it wants to about the thread | |
3605 | * (typically info about its blocked / runnable state, name, etc.). | |
3606 | * This string will appear in the info threads display. | |
802188a7 | 3607 | * |
9d1f7ab2 MS |
3608 | * Optional: targets are not required to implement this function. |
3609 | */ | |
3610 | ||
f6ac5f3d PA |
3611 | const char * |
3612 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3613 | { |
d01949b6 | 3614 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3615 | int result; |
3616 | int set; | |
3617 | threadref id; | |
3618 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3619 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3620 | int n = 0; /* position in display_buf */ |
3621 | ||
5d93a237 | 3622 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3623 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3624 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3625 | |
60e569b9 | 3626 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3627 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3628 | /* This is the main thread which was added by GDB. The remote |
3629 | server doesn't know about it. */ | |
3630 | return NULL; | |
3631 | ||
4082afcc | 3632 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3633 | { |
3634 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3635 | |
7aabaf9d | 3636 | if (info != NULL && info->priv != NULL) |
a9334058 SM |
3637 | { |
3638 | const std::string &extra = get_remote_thread_info (info)->extra; | |
3639 | return !extra.empty () ? extra.c_str () : NULL; | |
3640 | } | |
dc146f7c VP |
3641 | else |
3642 | return NULL; | |
3643 | } | |
3644 | ||
b80fafe3 | 3645 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3646 | { |
82f73884 PA |
3647 | char *b = rs->buf; |
3648 | char *endb = rs->buf + get_remote_packet_size (); | |
3649 | ||
3650 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3651 | b += strlen (b); | |
3652 | write_ptid (b, endb, tp->ptid); | |
3653 | ||
2e9f7625 | 3654 | putpkt (rs->buf); |
6d820c5c | 3655 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3656 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3657 | { |
325fac50 | 3658 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3659 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3660 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3661 | return display_buf; |
3662 | } | |
0f71a2f6 | 3663 | } |
9d1f7ab2 MS |
3664 | |
3665 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3666 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3667 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3668 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3669 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3670 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3671 | if (threadinfo.active) | |
0f71a2f6 | 3672 | { |
9d1f7ab2 | 3673 | if (*threadinfo.shortname) |
2bc416ba | 3674 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3675 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3676 | if (*threadinfo.display) |
2bc416ba | 3677 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3678 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3679 | if (*threadinfo.more_display) |
2bc416ba | 3680 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3681 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3682 | |
3683 | if (n > 0) | |
c5aa993b | 3684 | { |
23860348 | 3685 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3686 | if (',' == display_buf[n-1]) |
3687 | display_buf[n-1] = ' '; | |
3688 | return display_buf; | |
c5aa993b | 3689 | } |
0f71a2f6 | 3690 | } |
9d1f7ab2 | 3691 | return NULL; |
0f71a2f6 | 3692 | } |
c906108c | 3693 | \f |
c5aa993b | 3694 | |
f6ac5f3d PA |
3695 | bool |
3696 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3697 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3698 | { |
3699 | struct remote_state *rs = get_remote_state (); | |
3700 | char *p = rs->buf; | |
3701 | ||
bba74b36 | 3702 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3703 | p += strlen (p); |
3704 | p += hexnumstr (p, addr); | |
3705 | putpkt (rs->buf); | |
3706 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3707 | p = rs->buf; | |
3708 | ||
3709 | if (*p == 'E') | |
3710 | error (_("Remote failure reply: %s"), p); | |
3711 | ||
3712 | if (*p++ == 'm') | |
3713 | { | |
256642e8 | 3714 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3715 | return true; |
0fb4aa4b PA |
3716 | } |
3717 | ||
5d9310c4 | 3718 | return false; |
0fb4aa4b PA |
3719 | } |
3720 | ||
f6ac5f3d PA |
3721 | std::vector<static_tracepoint_marker> |
3722 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
3723 | { |
3724 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3725 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3726 | const char *p; |
5d9310c4 | 3727 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3728 | |
3729 | /* Ask for a first packet of static tracepoint marker | |
3730 | definition. */ | |
3731 | putpkt ("qTfSTM"); | |
3732 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3733 | p = rs->buf; | |
3734 | if (*p == 'E') | |
3735 | error (_("Remote failure reply: %s"), p); | |
3736 | ||
0fb4aa4b PA |
3737 | while (*p++ == 'm') |
3738 | { | |
0fb4aa4b PA |
3739 | do |
3740 | { | |
5d9310c4 | 3741 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 3742 | |
5d9310c4 SM |
3743 | if (strid == NULL || marker.str_id == strid) |
3744 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
3745 | } |
3746 | while (*p++ == ','); /* comma-separated list */ | |
3747 | /* Ask for another packet of static tracepoint definition. */ | |
3748 | putpkt ("qTsSTM"); | |
3749 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3750 | p = rs->buf; | |
3751 | } | |
3752 | ||
0fb4aa4b PA |
3753 | return markers; |
3754 | } | |
3755 | ||
3756 | \f | |
10760264 JB |
3757 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3758 | ||
f6ac5f3d PA |
3759 | ptid_t |
3760 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 3761 | { |
ba348170 | 3762 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3763 | } |
3764 | \f | |
3765 | ||
24b06219 | 3766 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3767 | |
3768 | static void | |
fba45db2 | 3769 | extended_remote_restart (void) |
c906108c | 3770 | { |
d01949b6 | 3771 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3772 | |
3773 | /* Send the restart command; for reasons I don't understand the | |
3774 | remote side really expects a number after the "R". */ | |
ea9c271d | 3775 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3776 | putpkt (rs->buf); |
c906108c | 3777 | |
ad9a8f3f | 3778 | remote_fileio_reset (); |
c906108c SS |
3779 | } |
3780 | \f | |
3781 | /* Clean up connection to a remote debugger. */ | |
3782 | ||
f6ac5f3d PA |
3783 | void |
3784 | remote_target::close () | |
c906108c | 3785 | { |
5d93a237 TT |
3786 | struct remote_state *rs = get_remote_state (); |
3787 | ||
3788 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3789 | return; /* already closed */ |
3790 | ||
048094ac | 3791 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 3792 | terminal_ours (); |
ce5ce7ed | 3793 | |
5d93a237 TT |
3794 | serial_close (rs->remote_desc); |
3795 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3796 | |
3797 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3798 | of all the inferiors and their threads we were controlling. |
3799 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3800 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3801 | inferior_ptid = null_ptid; |
f67fd822 | 3802 | discard_all_inferiors (); |
ce5ce7ed | 3803 | |
f48ff2a7 YQ |
3804 | /* We are closing the remote target, so we should discard |
3805 | everything of this target. */ | |
bcc75809 | 3806 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3807 | |
3808 | if (remote_async_inferior_event_token) | |
3809 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3810 | |
5965e028 | 3811 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3812 | |
3813 | trace_reset_local_state (); | |
c906108c SS |
3814 | } |
3815 | ||
23860348 | 3816 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3817 | |
3818 | static void | |
fba45db2 | 3819 | get_offsets (void) |
c906108c | 3820 | { |
d01949b6 | 3821 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3822 | char *buf; |
085dd6e6 | 3823 | char *ptr; |
31d99776 DJ |
3824 | int lose, num_segments = 0, do_sections, do_segments; |
3825 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3826 | struct section_offsets *offs; |
31d99776 DJ |
3827 | struct symfile_segment_data *data; |
3828 | ||
3829 | if (symfile_objfile == NULL) | |
3830 | return; | |
c906108c SS |
3831 | |
3832 | putpkt ("qOffsets"); | |
6d820c5c | 3833 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3834 | buf = rs->buf; |
c906108c SS |
3835 | |
3836 | if (buf[0] == '\000') | |
3837 | return; /* Return silently. Stub doesn't support | |
23860348 | 3838 | this command. */ |
c906108c SS |
3839 | if (buf[0] == 'E') |
3840 | { | |
8a3fe4f8 | 3841 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3842 | return; |
3843 | } | |
3844 | ||
3845 | /* Pick up each field in turn. This used to be done with scanf, but | |
3846 | scanf will make trouble if CORE_ADDR size doesn't match | |
3847 | conversion directives correctly. The following code will work | |
3848 | with any size of CORE_ADDR. */ | |
3849 | text_addr = data_addr = bss_addr = 0; | |
3850 | ptr = buf; | |
3851 | lose = 0; | |
3852 | ||
61012eef | 3853 | if (startswith (ptr, "Text=")) |
c906108c SS |
3854 | { |
3855 | ptr += 5; | |
3856 | /* Don't use strtol, could lose on big values. */ | |
3857 | while (*ptr && *ptr != ';') | |
3858 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3859 | |
61012eef | 3860 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3861 | { |
3862 | ptr += 6; | |
3863 | while (*ptr && *ptr != ';') | |
3864 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3865 | } | |
3866 | else | |
3867 | lose = 1; | |
3868 | ||
61012eef | 3869 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3870 | { |
3871 | ptr += 5; | |
3872 | while (*ptr && *ptr != ';') | |
3873 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3874 | |
31d99776 DJ |
3875 | if (bss_addr != data_addr) |
3876 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3877 | } | |
3878 | else | |
3879 | lose = 1; | |
3880 | } | |
61012eef | 3881 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3882 | { |
31d99776 DJ |
3883 | ptr += 8; |
3884 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3885 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3886 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3887 | num_segments = 1; | |
3888 | ||
61012eef | 3889 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3890 | { |
3891 | ptr += 9; | |
3892 | while (*ptr && *ptr != ';') | |
3893 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3894 | num_segments++; | |
3895 | } | |
c906108c SS |
3896 | } |
3897 | else | |
3898 | lose = 1; | |
3899 | ||
3900 | if (lose) | |
8a3fe4f8 | 3901 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3902 | else if (*ptr != '\0') |
3903 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3904 | |
802188a7 | 3905 | offs = ((struct section_offsets *) |
a39a16c4 | 3906 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3907 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3908 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3909 | |
31d99776 DJ |
3910 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3911 | do_segments = (data != NULL); | |
3912 | do_sections = num_segments == 0; | |
c906108c | 3913 | |
28c32713 | 3914 | if (num_segments > 0) |
31d99776 | 3915 | { |
31d99776 DJ |
3916 | segments[0] = text_addr; |
3917 | segments[1] = data_addr; | |
3918 | } | |
28c32713 JB |
3919 | /* If we have two segments, we can still try to relocate everything |
3920 | by assuming that the .text and .data offsets apply to the whole | |
3921 | text and data segments. Convert the offsets given in the packet | |
3922 | to base addresses for symfile_map_offsets_to_segments. */ | |
3923 | else if (data && data->num_segments == 2) | |
3924 | { | |
3925 | segments[0] = data->segment_bases[0] + text_addr; | |
3926 | segments[1] = data->segment_bases[1] + data_addr; | |
3927 | num_segments = 2; | |
3928 | } | |
8d385431 DJ |
3929 | /* If the object file has only one segment, assume that it is text |
3930 | rather than data; main programs with no writable data are rare, | |
3931 | but programs with no code are useless. Of course the code might | |
3932 | have ended up in the data segment... to detect that we would need | |
3933 | the permissions here. */ | |
3934 | else if (data && data->num_segments == 1) | |
3935 | { | |
3936 | segments[0] = data->segment_bases[0] + text_addr; | |
3937 | num_segments = 1; | |
3938 | } | |
28c32713 JB |
3939 | /* There's no way to relocate by segment. */ |
3940 | else | |
3941 | do_segments = 0; | |
31d99776 DJ |
3942 | |
3943 | if (do_segments) | |
3944 | { | |
3945 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3946 | offs, num_segments, segments); | |
3947 | ||
3948 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3949 | error (_("Can not handle qOffsets TextSeg " |
3950 | "response with this symbol file")); | |
31d99776 DJ |
3951 | |
3952 | if (ret > 0) | |
3953 | do_sections = 0; | |
3954 | } | |
c906108c | 3955 | |
9ef895d6 DJ |
3956 | if (data) |
3957 | free_symfile_segment_data (data); | |
31d99776 DJ |
3958 | |
3959 | if (do_sections) | |
3960 | { | |
3961 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3962 | ||
3e43a32a MS |
3963 | /* This is a temporary kludge to force data and bss to use the |
3964 | same offsets because that's what nlmconv does now. The real | |
3965 | solution requires changes to the stub and remote.c that I | |
3966 | don't have time to do right now. */ | |
31d99776 DJ |
3967 | |
3968 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3969 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3970 | } | |
c906108c SS |
3971 | |
3972 | objfile_relocate (symfile_objfile, offs); | |
3973 | } | |
3974 | ||
9a7071a8 JB |
3975 | /* Send interrupt_sequence to remote target. */ |
3976 | static void | |
eeae04df | 3977 | send_interrupt_sequence (void) |
9a7071a8 | 3978 | { |
5d93a237 TT |
3979 | struct remote_state *rs = get_remote_state (); |
3980 | ||
9a7071a8 | 3981 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3982 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3983 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3984 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3985 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3986 | { | |
5d93a237 | 3987 | serial_send_break (rs->remote_desc); |
c33e31fd | 3988 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3989 | } |
3990 | else | |
3991 | internal_error (__FILE__, __LINE__, | |
3992 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3993 | interrupt_sequence_mode); | |
3994 | } | |
3995 | ||
3405876a PA |
3996 | |
3997 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3998 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3999 | ||
4000 | static ptid_t | |
4001 | stop_reply_extract_thread (char *stop_reply) | |
4002 | { | |
4003 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4004 | { | |
256642e8 | 4005 | const char *p; |
3405876a PA |
4006 | |
4007 | /* Txx r:val ; r:val (...) */ | |
4008 | p = &stop_reply[3]; | |
4009 | ||
4010 | /* Look for "register" named "thread". */ | |
4011 | while (*p != '\0') | |
4012 | { | |
256642e8 | 4013 | const char *p1; |
3405876a PA |
4014 | |
4015 | p1 = strchr (p, ':'); | |
4016 | if (p1 == NULL) | |
4017 | return null_ptid; | |
4018 | ||
4019 | if (strncmp (p, "thread", p1 - p) == 0) | |
4020 | return read_ptid (++p1, &p); | |
4021 | ||
4022 | p1 = strchr (p, ';'); | |
4023 | if (p1 == NULL) | |
4024 | return null_ptid; | |
4025 | p1++; | |
4026 | ||
4027 | p = p1; | |
4028 | } | |
4029 | } | |
4030 | ||
4031 | return null_ptid; | |
4032 | } | |
4033 | ||
b7ea362b PA |
4034 | /* Determine the remote side's current thread. If we have a stop |
4035 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4036 | "thread" register we can extract the current thread from. If not, | |
4037 | ask the remote which is the current thread with qC. The former | |
4038 | method avoids a roundtrip. */ | |
4039 | ||
4040 | static ptid_t | |
4041 | get_current_thread (char *wait_status) | |
4042 | { | |
6a49a997 | 4043 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4044 | |
4045 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4046 | the target architecture, which we haven't yet fully determined at | |
4047 | this point. */ | |
4048 | if (wait_status != NULL) | |
4049 | ptid = stop_reply_extract_thread (wait_status); | |
4050 | if (ptid_equal (ptid, null_ptid)) | |
4051 | ptid = remote_current_thread (inferior_ptid); | |
4052 | ||
4053 | return ptid; | |
4054 | } | |
4055 | ||
49c62f2e PA |
4056 | /* Query the remote target for which is the current thread/process, |
4057 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4058 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4059 | to return the current thread. |
4060 | ||
4061 | This function is called after handling the '?' or 'vRun' packets, | |
4062 | whose response is a stop reply from which we can also try | |
4063 | extracting the thread. If the target doesn't support the explicit | |
4064 | qC query, we infer the current thread from that stop reply, passed | |
4065 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
4066 | |
4067 | static void | |
3405876a | 4068 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
4069 | { |
4070 | struct remote_state *rs = get_remote_state (); | |
4071 | int fake_pid_p = 0; | |
49c62f2e PA |
4072 | |
4073 | inferior_ptid = null_ptid; | |
4074 | ||
b7ea362b | 4075 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 4076 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4077 | |
87215ad1 | 4078 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4079 | { |
4080 | if (!remote_multi_process_p (rs)) | |
4081 | fake_pid_p = 1; | |
49c62f2e PA |
4082 | } |
4083 | else | |
4084 | { | |
4085 | /* Without this, some commands which require an active target | |
4086 | (such as kill) won't work. This variable serves (at least) | |
4087 | double duty as both the pid of the target process (if it has | |
4088 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4089 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
4090 | fake_pid_p = 1; |
4091 | } | |
4092 | ||
87215ad1 | 4093 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 4094 | |
87215ad1 SDJ |
4095 | /* Add the main thread and switch to it. Don't try reading |
4096 | registers yet, since we haven't fetched the target description | |
4097 | yet. */ | |
4098 | thread_info *tp = add_thread_silent (curr_ptid); | |
4099 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
4100 | } |
4101 | ||
6efcd9a8 PA |
4102 | /* Print info about a thread that was found already stopped on |
4103 | connection. */ | |
4104 | ||
4105 | static void | |
4106 | print_one_stopped_thread (struct thread_info *thread) | |
4107 | { | |
4108 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4109 | ||
4110 | switch_to_thread (thread->ptid); | |
4111 | stop_pc = get_frame_pc (get_current_frame ()); | |
4112 | set_current_sal_from_frame (get_current_frame ()); | |
4113 | ||
4114 | thread->suspend.waitstatus_pending_p = 0; | |
4115 | ||
4116 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4117 | { | |
4118 | enum gdb_signal sig = ws->value.sig; | |
4119 | ||
4120 | if (signal_print_state (sig)) | |
76727919 | 4121 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4122 | } |
76727919 | 4123 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4124 | } |
4125 | ||
221e1a37 PA |
4126 | /* Process all initial stop replies the remote side sent in response |
4127 | to the ? packet. These indicate threads that were already stopped | |
4128 | on initial connection. We mark these threads as stopped and print | |
4129 | their current frame before giving the user the prompt. */ | |
4130 | ||
4131 | static void | |
6efcd9a8 | 4132 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
4133 | { |
4134 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4135 | struct inferior *inf; |
4136 | struct thread_info *thread; | |
4137 | struct thread_info *selected = NULL; | |
4138 | struct thread_info *lowest_stopped = NULL; | |
4139 | struct thread_info *first = NULL; | |
221e1a37 PA |
4140 | |
4141 | /* Consume the initial pending events. */ | |
4142 | while (pending_stop_replies-- > 0) | |
4143 | { | |
4144 | ptid_t waiton_ptid = minus_one_ptid; | |
4145 | ptid_t event_ptid; | |
4146 | struct target_waitstatus ws; | |
4147 | int ignore_event = 0; | |
6efcd9a8 | 4148 | struct thread_info *thread; |
221e1a37 PA |
4149 | |
4150 | memset (&ws, 0, sizeof (ws)); | |
4151 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4152 | if (remote_debug) | |
4153 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4154 | ||
4155 | switch (ws.kind) | |
4156 | { | |
4157 | case TARGET_WAITKIND_IGNORE: | |
4158 | case TARGET_WAITKIND_NO_RESUMED: | |
4159 | case TARGET_WAITKIND_SIGNALLED: | |
4160 | case TARGET_WAITKIND_EXITED: | |
4161 | /* We shouldn't see these, but if we do, just ignore. */ | |
4162 | if (remote_debug) | |
4163 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4164 | ignore_event = 1; | |
4165 | break; | |
4166 | ||
4167 | case TARGET_WAITKIND_EXECD: | |
4168 | xfree (ws.value.execd_pathname); | |
4169 | break; | |
4170 | default: | |
4171 | break; | |
4172 | } | |
4173 | ||
4174 | if (ignore_event) | |
4175 | continue; | |
4176 | ||
6efcd9a8 | 4177 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
4178 | |
4179 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4180 | { | |
4181 | enum gdb_signal sig = ws.value.sig; | |
4182 | ||
4183 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4184 | instead of signal 0. Suppress it. */ | |
4185 | if (sig == GDB_SIGNAL_TRAP) | |
4186 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
4187 | thread->suspend.stop_signal = sig; |
4188 | ws.value.sig = sig; | |
4189 | } | |
221e1a37 | 4190 | |
6efcd9a8 PA |
4191 | thread->suspend.waitstatus = ws; |
4192 | ||
4193 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4194 | || ws.value.sig != GDB_SIGNAL_0) | |
4195 | thread->suspend.waitstatus_pending_p = 1; | |
4196 | ||
4197 | set_executing (event_ptid, 0); | |
4198 | set_running (event_ptid, 0); | |
7aabaf9d | 4199 | get_remote_thread_info (thread)->vcont_resumed = 0; |
6efcd9a8 PA |
4200 | } |
4201 | ||
4202 | /* "Notice" the new inferiors before anything related to | |
4203 | registers/memory. */ | |
4204 | ALL_INFERIORS (inf) | |
4205 | { | |
4206 | if (inf->pid == 0) | |
4207 | continue; | |
4208 | ||
4209 | inf->needs_setup = 1; | |
4210 | ||
4211 | if (non_stop) | |
4212 | { | |
4213 | thread = any_live_thread_of_process (inf->pid); | |
4214 | notice_new_inferior (thread->ptid, | |
4215 | thread->state == THREAD_RUNNING, | |
4216 | from_tty); | |
4217 | } | |
4218 | } | |
4219 | ||
4220 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4221 | records the threads' stop pc, so must be done after "noticing" | |
4222 | the inferiors. */ | |
4223 | if (!non_stop) | |
4224 | { | |
4225 | stop_all_threads (); | |
4226 | ||
4227 | /* If all threads of an inferior were already stopped, we | |
4228 | haven't setup the inferior yet. */ | |
4229 | ALL_INFERIORS (inf) | |
4230 | { | |
4231 | if (inf->pid == 0) | |
4232 | continue; | |
221e1a37 | 4233 | |
6efcd9a8 PA |
4234 | if (inf->needs_setup) |
4235 | { | |
4236 | thread = any_live_thread_of_process (inf->pid); | |
4237 | switch_to_thread_no_regs (thread); | |
4238 | setup_inferior (0); | |
4239 | } | |
4240 | } | |
221e1a37 | 4241 | } |
6efcd9a8 PA |
4242 | |
4243 | /* Now go over all threads that are stopped, and print their current | |
4244 | frame. If all-stop, then if there's a signalled thread, pick | |
4245 | that as current. */ | |
4246 | ALL_NON_EXITED_THREADS (thread) | |
4247 | { | |
6efcd9a8 PA |
4248 | if (first == NULL) |
4249 | first = thread; | |
4250 | ||
4251 | if (!non_stop) | |
4252 | set_running (thread->ptid, 0); | |
4253 | else if (thread->state != THREAD_STOPPED) | |
4254 | continue; | |
4255 | ||
6efcd9a8 PA |
4256 | if (selected == NULL |
4257 | && thread->suspend.waitstatus_pending_p) | |
4258 | selected = thread; | |
4259 | ||
5d5658a1 PA |
4260 | if (lowest_stopped == NULL |
4261 | || thread->inf->num < lowest_stopped->inf->num | |
4262 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4263 | lowest_stopped = thread; |
4264 | ||
4265 | if (non_stop) | |
4266 | print_one_stopped_thread (thread); | |
4267 | } | |
4268 | ||
4269 | /* In all-stop, we only print the status of one thread, and leave | |
4270 | others with their status pending. */ | |
4271 | if (!non_stop) | |
4272 | { | |
4273 | thread = selected; | |
4274 | if (thread == NULL) | |
4275 | thread = lowest_stopped; | |
4276 | if (thread == NULL) | |
4277 | thread = first; | |
4278 | ||
4279 | print_one_stopped_thread (thread); | |
4280 | } | |
4281 | ||
4282 | /* For "info program". */ | |
4283 | thread = inferior_thread (); | |
4284 | if (thread->state == THREAD_STOPPED) | |
4285 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4286 | } |
4287 | ||
048094ac PA |
4288 | /* Start the remote connection and sync state. */ |
4289 | ||
f6ac5f3d PA |
4290 | void |
4291 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4292 | { |
c8d104ad PA |
4293 | struct remote_state *rs = get_remote_state (); |
4294 | struct packet_config *noack_config; | |
2d717e4f | 4295 | char *wait_status = NULL; |
8621d6a9 | 4296 | |
048094ac PA |
4297 | /* Signal other parts that we're going through the initial setup, |
4298 | and so things may not be stable yet. E.g., we don't try to | |
4299 | install tracepoints until we've relocated symbols. Also, a | |
4300 | Ctrl-C before we're connected and synced up can't interrupt the | |
4301 | target. Instead, it offers to drop the (potentially wedged) | |
4302 | connection. */ | |
4303 | rs->starting_up = 1; | |
4304 | ||
522002f9 | 4305 | QUIT; |
c906108c | 4306 | |
9a7071a8 JB |
4307 | if (interrupt_on_connect) |
4308 | send_interrupt_sequence (); | |
4309 | ||
57e12211 | 4310 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4311 | remote_serial_write ("+", 1); |
1e51243a | 4312 | |
c8d104ad PA |
4313 | /* The first packet we send to the target is the optional "supported |
4314 | packets" request. If the target can answer this, it will tell us | |
4315 | which later probes to skip. */ | |
4316 | remote_query_supported (); | |
4317 | ||
d914c394 | 4318 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4319 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4320 | set_permissions (); |
d914c394 | 4321 | |
57809e5e JK |
4322 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4323 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4324 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4325 | invalid reply and GDB would return error in | |
4326 | remote_hostio_set_filesystem, making remote files access impossible. | |
4327 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4328 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4329 | { | |
4330 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4331 | ||
4332 | putpkt (v_mustreplyempty); | |
4333 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4334 | if (strcmp (rs->buf, "OK") == 0) | |
4335 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4336 | else if (strcmp (rs->buf, "") != 0) | |
4337 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4338 | rs->buf); | |
4339 | } | |
4340 | ||
c8d104ad PA |
4341 | /* Next, we possibly activate noack mode. |
4342 | ||
4343 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4344 | enable noack mode if the stub reported a wish for it with | |
4345 | qSupported. | |
4346 | ||
4347 | If set to TRUE, then enable noack mode even if the stub didn't | |
4348 | report it in qSupported. If the stub doesn't reply OK, the | |
4349 | session ends with an error. | |
4350 | ||
4351 | If FALSE, then don't activate noack mode, regardless of what the | |
4352 | stub claimed should be the default with qSupported. */ | |
4353 | ||
4354 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4355 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4356 | { |
4357 | putpkt ("QStartNoAckMode"); | |
4358 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4359 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4360 | rs->noack_mode = 1; | |
4361 | } | |
4362 | ||
04bd08de | 4363 | if (extended_p) |
5fe04517 PA |
4364 | { |
4365 | /* Tell the remote that we are using the extended protocol. */ | |
4366 | putpkt ("!"); | |
4367 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4368 | } | |
4369 | ||
9b224c5e PA |
4370 | /* Let the target know which signals it is allowed to pass down to |
4371 | the program. */ | |
4372 | update_signals_program_target (); | |
4373 | ||
d962ef82 DJ |
4374 | /* Next, if the target can specify a description, read it. We do |
4375 | this before anything involving memory or registers. */ | |
4376 | target_find_description (); | |
4377 | ||
6c95b8df PA |
4378 | /* Next, now that we know something about the target, update the |
4379 | address spaces in the program spaces. */ | |
4380 | update_address_spaces (); | |
4381 | ||
50c71eaf PA |
4382 | /* On OSs where the list of libraries is global to all |
4383 | processes, we fetch them early. */ | |
f5656ead | 4384 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4385 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4386 | |
6efcd9a8 | 4387 | if (target_is_non_stop_p ()) |
74531fed | 4388 | { |
4082afcc | 4389 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4390 | error (_("Non-stop mode requested, but remote " |
4391 | "does not support non-stop")); | |
74531fed PA |
4392 | |
4393 | putpkt ("QNonStop:1"); | |
4394 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4395 | ||
4396 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4397 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4398 | |
4399 | /* Find about threads and processes the stub is already | |
4400 | controlling. We default to adding them in the running state. | |
4401 | The '?' query below will then tell us about which threads are | |
4402 | stopped. */ | |
f6ac5f3d | 4403 | this->update_thread_list (); |
74531fed | 4404 | } |
4082afcc | 4405 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4406 | { |
4407 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4408 | Request it explicitly. */ |
74531fed PA |
4409 | putpkt ("QNonStop:0"); |
4410 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4411 | ||
4412 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4413 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4414 | } |
4415 | ||
a0743c90 YQ |
4416 | /* Upload TSVs regardless of whether the target is running or not. The |
4417 | remote stub, such as GDBserver, may have some predefined or builtin | |
4418 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4419 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4420 | { |
4421 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4422 | ||
f6ac5f3d | 4423 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4424 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4425 | } | |
4426 | ||
2d717e4f DJ |
4427 | /* Check whether the target is running now. */ |
4428 | putpkt ("?"); | |
4429 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4430 | ||
6efcd9a8 | 4431 | if (!target_is_non_stop_p ()) |
2d717e4f | 4432 | { |
74531fed | 4433 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4434 | { |
04bd08de | 4435 | if (!extended_p) |
74531fed | 4436 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4437 | |
4438 | /* We're connected, but not running. Drop out before we | |
4439 | call start_remote. */ | |
e278ad5b | 4440 | rs->starting_up = 0; |
c35b1492 | 4441 | return; |
2d717e4f DJ |
4442 | } |
4443 | else | |
74531fed | 4444 | { |
74531fed | 4445 | /* Save the reply for later. */ |
224c3ddb | 4446 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4447 | strcpy (wait_status, rs->buf); |
4448 | } | |
4449 | ||
b7ea362b | 4450 | /* Fetch thread list. */ |
e8032dde | 4451 | target_update_thread_list (); |
b7ea362b | 4452 | |
74531fed PA |
4453 | /* Let the stub know that we want it to return the thread. */ |
4454 | set_continue_thread (minus_one_ptid); | |
4455 | ||
b7ea362b PA |
4456 | if (thread_count () == 0) |
4457 | { | |
4458 | /* Target has no concept of threads at all. GDB treats | |
4459 | non-threaded target as single-threaded; add a main | |
4460 | thread. */ | |
4461 | add_current_inferior_and_thread (wait_status); | |
4462 | } | |
4463 | else | |
4464 | { | |
4465 | /* We have thread information; select the thread the target | |
4466 | says should be current. If we're reconnecting to a | |
4467 | multi-threaded program, this will ideally be the thread | |
4468 | that last reported an event before GDB disconnected. */ | |
4469 | inferior_ptid = get_current_thread (wait_status); | |
4470 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4471 | { | |
4472 | /* Odd... The target was able to list threads, but not | |
4473 | tell us which thread was current (no "thread" | |
4474 | register in T stop reply?). Just pick the first | |
4475 | thread in the thread list then. */ | |
c9f35b34 KB |
4476 | |
4477 | if (remote_debug) | |
4478 | fprintf_unfiltered (gdb_stdlog, | |
4479 | "warning: couldn't determine remote " | |
4480 | "current thread; picking first in list.\n"); | |
4481 | ||
b7ea362b PA |
4482 | inferior_ptid = thread_list->ptid; |
4483 | } | |
4484 | } | |
74531fed | 4485 | |
6e586cc5 YQ |
4486 | /* init_wait_for_inferior should be called before get_offsets in order |
4487 | to manage `inserted' flag in bp loc in a correct state. | |
4488 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4489 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4490 | start_remote, set `inserted' flag to 1. In the initialization of | |
4491 | inferior, breakpoint_init_inferior should be called first, and then | |
4492 | breakpoint_re_set can be called. If this order is broken, state of | |
4493 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4494 | manipulation. */ | |
4495 | init_wait_for_inferior (); | |
4496 | ||
74531fed PA |
4497 | get_offsets (); /* Get text, data & bss offsets. */ |
4498 | ||
d962ef82 DJ |
4499 | /* If we could not find a description using qXfer, and we know |
4500 | how to do it some other way, try again. This is not | |
4501 | supported for non-stop; it could be, but it is tricky if | |
4502 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4503 | if (remote_read_description_p (this) |
f5656ead | 4504 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4505 | { |
4506 | target_clear_description (); | |
4507 | target_find_description (); | |
4508 | } | |
4509 | ||
74531fed PA |
4510 | /* Use the previously fetched status. */ |
4511 | gdb_assert (wait_status != NULL); | |
4512 | strcpy (rs->buf, wait_status); | |
4513 | rs->cached_wait_status = 1; | |
4514 | ||
f6ac5f3d | 4515 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4516 | } |
4517 | else | |
4518 | { | |
68c97600 PA |
4519 | /* Clear WFI global state. Do this before finding about new |
4520 | threads and inferiors, and setting the current inferior. | |
4521 | Otherwise we would clear the proceed status of the current | |
4522 | inferior when we want its stop_soon state to be preserved | |
4523 | (see notice_new_inferior). */ | |
4524 | init_wait_for_inferior (); | |
4525 | ||
74531fed PA |
4526 | /* In non-stop, we will either get an "OK", meaning that there |
4527 | are no stopped threads at this time; or, a regular stop | |
4528 | reply. In the latter case, there may be more than one thread | |
4529 | stopped --- we pull them all out using the vStopped | |
4530 | mechanism. */ | |
4531 | if (strcmp (rs->buf, "OK") != 0) | |
4532 | { | |
722247f1 | 4533 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4534 | |
722247f1 YQ |
4535 | /* remote_notif_get_pending_replies acks this one, and gets |
4536 | the rest out. */ | |
f48ff2a7 | 4537 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4538 | = remote_notif_parse (notif, rs->buf); |
4539 | remote_notif_get_pending_events (notif); | |
74531fed | 4540 | } |
2d717e4f | 4541 | |
74531fed PA |
4542 | if (thread_count () == 0) |
4543 | { | |
04bd08de | 4544 | if (!extended_p) |
74531fed | 4545 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4546 | |
c35b1492 PA |
4547 | /* We're connected, but not running. Drop out before we |
4548 | call start_remote. */ | |
e278ad5b | 4549 | rs->starting_up = 0; |
c35b1492 PA |
4550 | return; |
4551 | } | |
74531fed | 4552 | |
74531fed PA |
4553 | /* In non-stop mode, any cached wait status will be stored in |
4554 | the stop reply queue. */ | |
4555 | gdb_assert (wait_status == NULL); | |
f0223081 | 4556 | |
2455069d | 4557 | /* Report all signals during attach/startup. */ |
f6ac5f3d | 4558 | pass_signals (0, NULL); |
221e1a37 PA |
4559 | |
4560 | /* If there are already stopped threads, mark them stopped and | |
4561 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4562 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4563 | |
4564 | if (target_can_async_p ()) | |
4565 | target_async (1); | |
74531fed | 4566 | } |
c8d104ad | 4567 | |
c8d104ad PA |
4568 | /* If we connected to a live target, do some additional setup. */ |
4569 | if (target_has_execution) | |
4570 | { | |
f4ccffad | 4571 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4572 | remote_check_symbols (); |
c8d104ad | 4573 | } |
50c71eaf | 4574 | |
d5551862 SS |
4575 | /* Possibly the target has been engaged in a trace run started |
4576 | previously; find out where things are at. */ | |
f6ac5f3d | 4577 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4578 | { |
00bf0b85 | 4579 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4580 | |
00bf0b85 SS |
4581 | if (current_trace_status ()->running) |
4582 | printf_filtered (_("Trace is already running on the target.\n")); | |
4583 | ||
f6ac5f3d | 4584 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4585 | |
4586 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4587 | } |
4588 | ||
c0272db5 TW |
4589 | /* Possibly the target has been engaged in a btrace record started |
4590 | previously; find out where things are at. */ | |
4591 | remote_btrace_maybe_reopen (); | |
4592 | ||
1e51243a PA |
4593 | /* The thread and inferior lists are now synchronized with the |
4594 | target, our symbols have been relocated, and we're merged the | |
4595 | target's tracepoints with ours. We're done with basic start | |
4596 | up. */ | |
4597 | rs->starting_up = 0; | |
4598 | ||
a25a5a45 PA |
4599 | /* Maybe breakpoints are global and need to be inserted now. */ |
4600 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4601 | insert_breakpoints (); |
c906108c SS |
4602 | } |
4603 | ||
4604 | /* Open a connection to a remote debugger. | |
4605 | NAME is the filename used for communication. */ | |
4606 | ||
f6ac5f3d PA |
4607 | void |
4608 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4609 | { |
f6ac5f3d | 4610 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4611 | } |
4612 | ||
c906108c SS |
4613 | /* Open a connection to a remote debugger using the extended |
4614 | remote gdb protocol. NAME is the filename used for communication. */ | |
4615 | ||
f6ac5f3d PA |
4616 | void |
4617 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4618 | { |
f6ac5f3d | 4619 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4620 | } |
4621 | ||
ca4f7f8b PA |
4622 | /* Reset all packets back to "unknown support". Called when opening a |
4623 | new connection to a remote target. */ | |
c906108c | 4624 | |
d471ea57 | 4625 | static void |
ca4f7f8b | 4626 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4627 | { |
4628 | int i; | |
a744cf53 | 4629 | |
444abaca | 4630 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4631 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4632 | } |
4633 | ||
ca4f7f8b PA |
4634 | /* Initialize all packet configs. */ |
4635 | ||
4636 | static void | |
4637 | init_all_packet_configs (void) | |
4638 | { | |
4639 | int i; | |
4640 | ||
4641 | for (i = 0; i < PACKET_MAX; i++) | |
4642 | { | |
4643 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4644 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4645 | } | |
4646 | } | |
4647 | ||
23860348 | 4648 | /* Symbol look-up. */ |
dc8acb97 MS |
4649 | |
4650 | static void | |
36d25514 | 4651 | remote_check_symbols (void) |
dc8acb97 MS |
4652 | { |
4653 | char *msg, *reply, *tmp; | |
dc8acb97 | 4654 | int end; |
28170b88 | 4655 | long reply_size; |
a5c0808e | 4656 | struct cleanup *old_chain; |
dc8acb97 | 4657 | |
63154eca PA |
4658 | /* The remote side has no concept of inferiors that aren't running |
4659 | yet, it only knows about running processes. If we're connected | |
4660 | but our current inferior is not running, we should not invite the | |
4661 | remote target to request symbol lookups related to its | |
4662 | (unrelated) current process. */ | |
4663 | if (!target_has_execution) | |
4664 | return; | |
4665 | ||
4082afcc | 4666 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4667 | return; |
4668 | ||
63154eca PA |
4669 | /* Make sure the remote is pointing at the right process. Note |
4670 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4671 | set_general_process (); |
4672 | ||
6d820c5c DJ |
4673 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4674 | because we need both at the same time. */ | |
224c3ddb | 4675 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4676 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4677 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4678 | make_cleanup (free_current_contents, &reply); | |
4679 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4680 | |
23860348 | 4681 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4682 | |
4683 | putpkt ("qSymbol::"); | |
28170b88 MK |
4684 | getpkt (&reply, &reply_size, 0); |
4685 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4686 | |
61012eef | 4687 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4688 | { |
77e371c0 TT |
4689 | struct bound_minimal_symbol sym; |
4690 | ||
dc8acb97 | 4691 | tmp = &reply[8]; |
cfd77fa1 | 4692 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4693 | msg[end] = '\0'; |
4694 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4695 | if (sym.minsym == NULL) |
ea9c271d | 4696 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4697 | else |
2bbe3cc1 | 4698 | { |
f5656ead | 4699 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4700 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4701 | |
4702 | /* If this is a function address, return the start of code | |
4703 | instead of any data function descriptor. */ | |
f5656ead | 4704 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4705 | sym_addr, |
f6ac5f3d | 4706 | target_stack); |
2bbe3cc1 DJ |
4707 | |
4708 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4709 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4710 | } |
4711 | ||
dc8acb97 | 4712 | putpkt (msg); |
28170b88 | 4713 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4714 | } |
a5c0808e PA |
4715 | |
4716 | do_cleanups (old_chain); | |
dc8acb97 MS |
4717 | } |
4718 | ||
9db8d71f | 4719 | static struct serial * |
baa336ce | 4720 | remote_serial_open (const char *name) |
9db8d71f DJ |
4721 | { |
4722 | static int udp_warning = 0; | |
4723 | ||
4724 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4725 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4726 | serial connection is reliable and not the serial connection promising | |
4727 | to be. */ | |
61012eef | 4728 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4729 | { |
3e43a32a MS |
4730 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4731 | "Some events may be lost, rendering further debugging " | |
4732 | "impossible.")); | |
9db8d71f DJ |
4733 | udp_warning = 1; |
4734 | } | |
4735 | ||
4736 | return serial_open (name); | |
4737 | } | |
4738 | ||
d914c394 SS |
4739 | /* Inform the target of our permission settings. The permission flags |
4740 | work without this, but if the target knows the settings, it can do | |
4741 | a couple things. First, it can add its own check, to catch cases | |
4742 | that somehow manage to get by the permissions checks in target | |
4743 | methods. Second, if the target is wired to disallow particular | |
4744 | settings (for instance, a system in the field that is not set up to | |
4745 | be able to stop at a breakpoint), it can object to any unavailable | |
4746 | permissions. */ | |
4747 | ||
4748 | void | |
f6ac5f3d | 4749 | remote_target::set_permissions () |
d914c394 SS |
4750 | { |
4751 | struct remote_state *rs = get_remote_state (); | |
4752 | ||
bba74b36 YQ |
4753 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4754 | "WriteReg:%x;WriteMem:%x;" | |
4755 | "InsertBreak:%x;InsertTrace:%x;" | |
4756 | "InsertFastTrace:%x;Stop:%x", | |
4757 | may_write_registers, may_write_memory, | |
4758 | may_insert_breakpoints, may_insert_tracepoints, | |
4759 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4760 | putpkt (rs->buf); |
4761 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4762 | ||
4763 | /* If the target didn't like the packet, warn the user. Do not try | |
4764 | to undo the user's settings, that would just be maddening. */ | |
4765 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4766 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4767 | } |
4768 | ||
be2a5f71 DJ |
4769 | /* This type describes each known response to the qSupported |
4770 | packet. */ | |
4771 | struct protocol_feature | |
4772 | { | |
4773 | /* The name of this protocol feature. */ | |
4774 | const char *name; | |
4775 | ||
4776 | /* The default for this protocol feature. */ | |
4777 | enum packet_support default_support; | |
4778 | ||
4779 | /* The function to call when this feature is reported, or after | |
4780 | qSupported processing if the feature is not supported. | |
4781 | The first argument points to this structure. The second | |
4782 | argument indicates whether the packet requested support be | |
4783 | enabled, disabled, or probed (or the default, if this function | |
4784 | is being called at the end of processing and this feature was | |
4785 | not reported). The third argument may be NULL; if not NULL, it | |
4786 | is a NUL-terminated string taken from the packet following | |
4787 | this feature's name and an equals sign. */ | |
4788 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4789 | const char *); | |
4790 | ||
4791 | /* The corresponding packet for this feature. Only used if | |
4792 | FUNC is remote_supported_packet. */ | |
4793 | int packet; | |
4794 | }; | |
4795 | ||
be2a5f71 DJ |
4796 | static void |
4797 | remote_supported_packet (const struct protocol_feature *feature, | |
4798 | enum packet_support support, | |
4799 | const char *argument) | |
4800 | { | |
4801 | if (argument) | |
4802 | { | |
4803 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4804 | " \"%s\"."), feature->name); | |
4805 | return; | |
4806 | } | |
4807 | ||
4082afcc | 4808 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4809 | } |
be2a5f71 DJ |
4810 | |
4811 | static void | |
4812 | remote_packet_size (const struct protocol_feature *feature, | |
4813 | enum packet_support support, const char *value) | |
4814 | { | |
4815 | struct remote_state *rs = get_remote_state (); | |
4816 | ||
4817 | int packet_size; | |
4818 | char *value_end; | |
4819 | ||
4820 | if (support != PACKET_ENABLE) | |
4821 | return; | |
4822 | ||
4823 | if (value == NULL || *value == '\0') | |
4824 | { | |
4825 | warning (_("Remote target reported \"%s\" without a size."), | |
4826 | feature->name); | |
4827 | return; | |
4828 | } | |
4829 | ||
4830 | errno = 0; | |
4831 | packet_size = strtol (value, &value_end, 16); | |
4832 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4833 | { | |
4834 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4835 | feature->name, value); | |
4836 | return; | |
4837 | } | |
4838 | ||
be2a5f71 DJ |
4839 | /* Record the new maximum packet size. */ |
4840 | rs->explicit_packet_size = packet_size; | |
4841 | } | |
4842 | ||
dc473cfb | 4843 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4844 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4845 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4846 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4847 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4848 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4849 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4850 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4851 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4852 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4853 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4854 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4855 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4856 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4857 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4858 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4859 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4860 | PACKET_qXfer_spu_read }, | |
4861 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4862 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4863 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4864 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4865 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4866 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4867 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4868 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4869 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4870 | PACKET_QPassSignals }, | |
82075af2 JS |
4871 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4872 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4873 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4874 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
4875 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
4876 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
4877 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4878 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
4879 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
4880 | PACKET_QEnvironmentHexEncoded }, | |
4881 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
4882 | PACKET_QEnvironmentReset }, | |
4883 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
4884 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
4885 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4886 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4887 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4888 | PACKET_multiprocess_feature }, | |
4889 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4890 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4891 | PACKET_qXfer_siginfo_read }, | |
4892 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4893 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4894 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4895 | PACKET_ConditionalTracepoints }, |
4082afcc | 4896 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4897 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4898 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4899 | PACKET_BreakpointCommands }, |
4082afcc | 4900 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4901 | PACKET_FastTracepoints }, |
4082afcc | 4902 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4903 | PACKET_StaticTracepoints }, |
4082afcc | 4904 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4905 | PACKET_InstallInTrace}, |
4082afcc PA |
4906 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4907 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4908 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4909 | PACKET_bc }, | |
4910 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4911 | PACKET_bs }, | |
409873ef SS |
4912 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4913 | PACKET_TracepointSource }, | |
d914c394 SS |
4914 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4915 | PACKET_QAllow }, | |
4082afcc PA |
4916 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4917 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4918 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4919 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4920 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4921 | PACKET_qXfer_uib }, | |
03583c20 UW |
4922 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4923 | PACKET_QDisableRandomization }, | |
d1feda86 | 4924 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4925 | { "QTBuffer:size", PACKET_DISABLE, |
4926 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4927 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4928 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4929 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4930 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4931 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4932 | PACKET_qXfer_btrace }, |
4933 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4934 | PACKET_qXfer_btrace_conf }, |
4935 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4936 | PACKET_Qbtrace_conf_bts_size }, |
4937 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4938 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4939 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4940 | PACKET_fork_event_feature }, | |
4941 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4942 | PACKET_vfork_event_feature }, | |
94585166 DB |
4943 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4944 | PACKET_exec_event_feature }, | |
b20a6524 | 4945 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4946 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4947 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4948 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4949 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4950 | }; |
4951 | ||
c8d5aac9 L |
4952 | static char *remote_support_xml; |
4953 | ||
4954 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4955 | ||
4956 | void | |
6e39997a | 4957 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4958 | { |
4959 | #if defined(HAVE_LIBEXPAT) | |
4960 | if (remote_support_xml == NULL) | |
c4f7c687 | 4961 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4962 | else |
4963 | { | |
4964 | char *copy = xstrdup (remote_support_xml + 13); | |
4965 | char *p = strtok (copy, ","); | |
4966 | ||
4967 | do | |
4968 | { | |
4969 | if (strcmp (p, xml) == 0) | |
4970 | { | |
4971 | /* already there */ | |
4972 | xfree (copy); | |
4973 | return; | |
4974 | } | |
4975 | } | |
4976 | while ((p = strtok (NULL, ",")) != NULL); | |
4977 | xfree (copy); | |
4978 | ||
94b0dee1 PA |
4979 | remote_support_xml = reconcat (remote_support_xml, |
4980 | remote_support_xml, ",", xml, | |
4981 | (char *) NULL); | |
c8d5aac9 L |
4982 | } |
4983 | #endif | |
4984 | } | |
4985 | ||
69b6ecb0 TT |
4986 | static void |
4987 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 4988 | { |
69b6ecb0 TT |
4989 | if (!msg->empty ()) |
4990 | msg->append (";"); | |
4991 | msg->append (append); | |
c8d5aac9 L |
4992 | } |
4993 | ||
be2a5f71 DJ |
4994 | static void |
4995 | remote_query_supported (void) | |
4996 | { | |
4997 | struct remote_state *rs = get_remote_state (); | |
4998 | char *next; | |
4999 | int i; | |
5000 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5001 | ||
5002 | /* The packet support flags are handled differently for this packet | |
5003 | than for most others. We treat an error, a disabled packet, and | |
5004 | an empty response identically: any features which must be reported | |
5005 | to be used will be automatically disabled. An empty buffer | |
5006 | accomplishes this, since that is also the representation for a list | |
5007 | containing no features. */ | |
5008 | ||
5009 | rs->buf[0] = 0; | |
4082afcc | 5010 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5011 | { |
69b6ecb0 | 5012 | std::string q; |
c8d5aac9 | 5013 | |
73b8c1fd | 5014 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5015 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5016 | |
f7e6eed5 | 5017 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5018 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5019 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5020 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5021 | |
69b6ecb0 | 5022 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5023 | |
8020350c DB |
5024 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5025 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5026 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5027 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5028 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5029 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5030 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5031 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5032 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5033 | |
750ce8d1 | 5034 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5035 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5036 | |
65706a29 | 5037 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5038 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5039 | |
f2faf941 | 5040 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5041 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5042 | |
b35d5edb PA |
5043 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5044 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5045 | if (remote_support_xml != NULL |
5046 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5047 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5048 | |
69b6ecb0 TT |
5049 | q = "qSupported:" + q; |
5050 | putpkt (q.c_str ()); | |
94b0dee1 | 5051 | |
be2a5f71 DJ |
5052 | getpkt (&rs->buf, &rs->buf_size, 0); |
5053 | ||
5054 | /* If an error occured, warn, but do not return - just reset the | |
5055 | buffer to empty and go on to disable features. */ | |
5056 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5057 | == PACKET_ERROR) | |
5058 | { | |
5059 | warning (_("Remote failure reply: %s"), rs->buf); | |
5060 | rs->buf[0] = 0; | |
5061 | } | |
5062 | } | |
5063 | ||
5064 | memset (seen, 0, sizeof (seen)); | |
5065 | ||
5066 | next = rs->buf; | |
5067 | while (*next) | |
5068 | { | |
5069 | enum packet_support is_supported; | |
5070 | char *p, *end, *name_end, *value; | |
5071 | ||
5072 | /* First separate out this item from the rest of the packet. If | |
5073 | there's another item after this, we overwrite the separator | |
5074 | (terminated strings are much easier to work with). */ | |
5075 | p = next; | |
5076 | end = strchr (p, ';'); | |
5077 | if (end == NULL) | |
5078 | { | |
5079 | end = p + strlen (p); | |
5080 | next = end; | |
5081 | } | |
5082 | else | |
5083 | { | |
89be2091 DJ |
5084 | *end = '\0'; |
5085 | next = end + 1; | |
5086 | ||
be2a5f71 DJ |
5087 | if (end == p) |
5088 | { | |
5089 | warning (_("empty item in \"qSupported\" response")); | |
5090 | continue; | |
5091 | } | |
be2a5f71 DJ |
5092 | } |
5093 | ||
5094 | name_end = strchr (p, '='); | |
5095 | if (name_end) | |
5096 | { | |
5097 | /* This is a name=value entry. */ | |
5098 | is_supported = PACKET_ENABLE; | |
5099 | value = name_end + 1; | |
5100 | *name_end = '\0'; | |
5101 | } | |
5102 | else | |
5103 | { | |
5104 | value = NULL; | |
5105 | switch (end[-1]) | |
5106 | { | |
5107 | case '+': | |
5108 | is_supported = PACKET_ENABLE; | |
5109 | break; | |
5110 | ||
5111 | case '-': | |
5112 | is_supported = PACKET_DISABLE; | |
5113 | break; | |
5114 | ||
5115 | case '?': | |
5116 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5117 | break; | |
5118 | ||
5119 | default: | |
3e43a32a MS |
5120 | warning (_("unrecognized item \"%s\" " |
5121 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5122 | continue; |
5123 | } | |
5124 | end[-1] = '\0'; | |
5125 | } | |
5126 | ||
5127 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5128 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5129 | { | |
5130 | const struct protocol_feature *feature; | |
5131 | ||
5132 | seen[i] = 1; | |
5133 | feature = &remote_protocol_features[i]; | |
5134 | feature->func (feature, is_supported, value); | |
5135 | break; | |
5136 | } | |
5137 | } | |
5138 | ||
5139 | /* If we increased the packet size, make sure to increase the global | |
5140 | buffer size also. We delay this until after parsing the entire | |
5141 | qSupported packet, because this is the same buffer we were | |
5142 | parsing. */ | |
5143 | if (rs->buf_size < rs->explicit_packet_size) | |
5144 | { | |
5145 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 5146 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
5147 | } |
5148 | ||
5149 | /* Handle the defaults for unmentioned features. */ | |
5150 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5151 | if (!seen[i]) | |
5152 | { | |
5153 | const struct protocol_feature *feature; | |
5154 | ||
5155 | feature = &remote_protocol_features[i]; | |
5156 | feature->func (feature, feature->default_support, NULL); | |
5157 | } | |
5158 | } | |
5159 | ||
048094ac PA |
5160 | /* Serial QUIT handler for the remote serial descriptor. |
5161 | ||
5162 | Defers handling a Ctrl-C until we're done with the current | |
5163 | command/response packet sequence, unless: | |
5164 | ||
5165 | - We're setting up the connection. Don't send a remote interrupt | |
5166 | request, as we're not fully synced yet. Quit immediately | |
5167 | instead. | |
5168 | ||
5169 | - The target has been resumed in the foreground | |
223ffa71 | 5170 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5171 | packet, and we're blocked waiting for the stop reply, thus a |
5172 | Ctrl-C should be immediately sent to the target. | |
5173 | ||
5174 | - We get a second Ctrl-C while still within the same serial read or | |
5175 | write. In that case the serial is seemingly wedged --- offer to | |
5176 | quit/disconnect. | |
5177 | ||
5178 | - We see a second Ctrl-C without target response, after having | |
5179 | previously interrupted the target. In that case the target/stub | |
5180 | is probably wedged --- offer to quit/disconnect. | |
5181 | */ | |
5182 | ||
5183 | static void | |
5184 | remote_serial_quit_handler (void) | |
5185 | { | |
5186 | struct remote_state *rs = get_remote_state (); | |
5187 | ||
5188 | if (check_quit_flag ()) | |
5189 | { | |
5190 | /* If we're starting up, we're not fully synced yet. Quit | |
5191 | immediately. */ | |
5192 | if (rs->starting_up) | |
5193 | quit (); | |
5194 | else if (rs->got_ctrlc_during_io) | |
5195 | { | |
5196 | if (query (_("The target is not responding to GDB commands.\n" | |
5197 | "Stop debugging it? "))) | |
5198 | remote_unpush_and_throw (); | |
5199 | } | |
5200 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5201 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5202 | interrupt_query (); |
5203 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5204 | an interrupt request. */ | |
223ffa71 | 5205 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5206 | target_interrupt (); |
048094ac PA |
5207 | else |
5208 | rs->got_ctrlc_during_io = 1; | |
5209 | } | |
5210 | } | |
5211 | ||
78a095c3 JK |
5212 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
5213 | on it so remove them first. */ | |
5214 | ||
5215 | static void | |
5216 | remote_unpush_target (void) | |
5217 | { | |
915ef8b1 | 5218 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 5219 | } |
be2a5f71 | 5220 | |
048094ac PA |
5221 | static void |
5222 | remote_unpush_and_throw (void) | |
5223 | { | |
5224 | remote_unpush_target (); | |
5225 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
5226 | } | |
5227 | ||
f6ac5f3d PA |
5228 | void |
5229 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5230 | { |
d01949b6 | 5231 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 5232 | |
c906108c | 5233 | if (name == 0) |
8a3fe4f8 | 5234 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5235 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5236 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5237 | |
23860348 | 5238 | /* See FIXME above. */ |
c6ebd6cf | 5239 | if (!target_async_permitted) |
92d1e331 | 5240 | wait_forever_enabled_p = 1; |
6426a772 | 5241 | |
2d717e4f | 5242 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5243 | Ask this question first, before target_preopen has a chance to kill |
5244 | anything. */ | |
5d93a237 | 5245 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 5246 | { |
78a095c3 JK |
5247 | if (from_tty |
5248 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5249 | error (_("Still connected.")); |
5250 | } | |
5251 | ||
78a095c3 | 5252 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5253 | target_preopen (from_tty); |
5254 | ||
89be2091 | 5255 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
5256 | xfree (rs->last_pass_packet); |
5257 | rs->last_pass_packet = NULL; | |
89be2091 | 5258 | |
9b224c5e PA |
5259 | /* Make sure we send the program signals list the next time we |
5260 | resume. */ | |
5e4a05c4 TT |
5261 | xfree (rs->last_program_signals_packet); |
5262 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 5263 | |
ad9a8f3f | 5264 | remote_fileio_reset (); |
1dd41f16 NS |
5265 | reopen_exec_file (); |
5266 | reread_symbols (); | |
5267 | ||
5d93a237 TT |
5268 | rs->remote_desc = remote_serial_open (name); |
5269 | if (!rs->remote_desc) | |
c906108c SS |
5270 | perror_with_name (name); |
5271 | ||
5272 | if (baud_rate != -1) | |
5273 | { | |
5d93a237 | 5274 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5275 | { |
9b74d5d3 KB |
5276 | /* The requested speed could not be set. Error out to |
5277 | top level after closing remote_desc. Take care to | |
5278 | set remote_desc to NULL to avoid closing remote_desc | |
5279 | more than once. */ | |
5d93a237 TT |
5280 | serial_close (rs->remote_desc); |
5281 | rs->remote_desc = NULL; | |
c906108c SS |
5282 | perror_with_name (name); |
5283 | } | |
5284 | } | |
5285 | ||
236af5e3 | 5286 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5287 | serial_raw (rs->remote_desc); |
c906108c SS |
5288 | |
5289 | /* If there is something sitting in the buffer we might take it as a | |
5290 | response to a command, which would be bad. */ | |
5d93a237 | 5291 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5292 | |
5293 | if (from_tty) | |
5294 | { | |
5295 | puts_filtered ("Remote debugging using "); | |
5296 | puts_filtered (name); | |
5297 | puts_filtered ("\n"); | |
5298 | } | |
d9f719f1 PA |
5299 | |
5300 | remote_target *target | |
5301 | = extended_p ? &extended_remote_ops : &remote_ops; | |
5302 | push_target (target); /* Switch to using remote target now. */ | |
c906108c | 5303 | |
74531fed PA |
5304 | /* Register extra event sources in the event loop. */ |
5305 | remote_async_inferior_event_token | |
5306 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5307 | NULL); | |
5965e028 | 5308 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5309 | |
be2a5f71 DJ |
5310 | /* Reset the target state; these things will be queried either by |
5311 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5312 | reset_all_packet_configs_support (); |
74531fed | 5313 | rs->cached_wait_status = 0; |
be2a5f71 | 5314 | rs->explicit_packet_size = 0; |
a6f3e723 | 5315 | rs->noack_mode = 0; |
82f73884 | 5316 | rs->extended = extended_p; |
e24a49d8 | 5317 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5318 | rs->ctrlc_pending_p = 0; |
048094ac | 5319 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5320 | |
47f8a51d TT |
5321 | rs->general_thread = not_sent_ptid; |
5322 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5323 | rs->remote_traceframe_number = -1; |
c906108c | 5324 | |
3a00c802 PA |
5325 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5326 | ||
9d1f7ab2 | 5327 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5328 | rs->use_threadinfo_query = 1; |
5329 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5330 | |
dd194f6b | 5331 | rs->readahead_cache.invalidate (); |
80152258 | 5332 | |
c6ebd6cf | 5333 | if (target_async_permitted) |
92d1e331 | 5334 | { |
92d1e331 DJ |
5335 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5336 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5337 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5338 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5339 | around this. Eventually a mechanism that allows |
92d1e331 | 5340 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5341 | implemented. */ |
92d1e331 DJ |
5342 | wait_forever_enabled_p = 0; |
5343 | } | |
5344 | ||
23860348 | 5345 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5346 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5347 | |
74531fed PA |
5348 | /* Start afresh. */ |
5349 | init_thread_list (); | |
5350 | ||
36918e70 | 5351 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5352 | target (we'd otherwise be in an inconsistent state) and then |
5353 | propogate the error on up the exception chain. This ensures that | |
5354 | the caller doesn't stumble along blindly assuming that the | |
5355 | function succeeded. The CLI doesn't have this problem but other | |
5356 | UI's, such as MI do. | |
36918e70 AC |
5357 | |
5358 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5359 | this function should return an error indication letting the | |
ce2826aa | 5360 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5361 | ``target remote'' is directly wired to this function making that |
5362 | impossible. On a positive note, the CLI side of this problem has | |
5363 | been fixed - the function set_cmd_context() makes it possible for | |
5364 | all the ``target ....'' commands to share a common callback | |
5365 | function. See cli-dump.c. */ | |
109c3e39 | 5366 | { |
2d717e4f | 5367 | |
492d29ea | 5368 | TRY |
04bd08de | 5369 | { |
d9f719f1 | 5370 | target->start_remote (from_tty, extended_p); |
04bd08de | 5371 | } |
492d29ea | 5372 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5373 | { |
c8d104ad PA |
5374 | /* Pop the partially set up target - unless something else did |
5375 | already before throwing the exception. */ | |
5d93a237 | 5376 | if (rs->remote_desc != NULL) |
78a095c3 | 5377 | remote_unpush_target (); |
c6ebd6cf | 5378 | if (target_async_permitted) |
109c3e39 AC |
5379 | wait_forever_enabled_p = 1; |
5380 | throw_exception (ex); | |
5381 | } | |
492d29ea | 5382 | END_CATCH |
109c3e39 | 5383 | } |
c906108c | 5384 | |
f4abbc16 MM |
5385 | remote_btrace_reset (); |
5386 | ||
c6ebd6cf | 5387 | if (target_async_permitted) |
92d1e331 | 5388 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5389 | } |
5390 | ||
de0d863e DB |
5391 | /* Detach the specified process. */ |
5392 | ||
5393 | static void | |
5394 | remote_detach_pid (int pid) | |
5395 | { | |
5396 | struct remote_state *rs = get_remote_state (); | |
5397 | ||
5398 | if (remote_multi_process_p (rs)) | |
5399 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5400 | else | |
5401 | strcpy (rs->buf, "D"); | |
5402 | ||
5403 | putpkt (rs->buf); | |
5404 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5405 | ||
5406 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5407 | ; | |
5408 | else if (rs->buf[0] == '\0') | |
5409 | error (_("Remote doesn't know how to detach")); | |
5410 | else | |
5411 | error (_("Can't detach process.")); | |
5412 | } | |
5413 | ||
5414 | /* This detaches a program to which we previously attached, using | |
5415 | inferior_ptid to identify the process. After this is done, GDB | |
5416 | can be used to debug some other program. We better not have left | |
5417 | any breakpoints in the target program or it'll die when it hits | |
5418 | one. */ | |
c906108c SS |
5419 | |
5420 | static void | |
6e1e1966 | 5421 | remote_detach_1 (int from_tty, inferior *inf) |
c906108c | 5422 | { |
82f73884 | 5423 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5424 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5425 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5426 | int is_fork_parent; | |
c906108c | 5427 | |
2d717e4f DJ |
5428 | if (!target_has_execution) |
5429 | error (_("No process to detach from.")); | |
5430 | ||
0f48b757 | 5431 | target_announce_detach (from_tty); |
7cee1e54 | 5432 | |
c906108c | 5433 | /* Tell the remote target to detach. */ |
de0d863e | 5434 | remote_detach_pid (pid); |
82f73884 | 5435 | |
8020350c DB |
5436 | /* Exit only if this is the only active inferior. */ |
5437 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5438 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5439 | |
de0d863e DB |
5440 | /* Check to see if we are detaching a fork parent. Note that if we |
5441 | are detaching a fork child, tp == NULL. */ | |
5442 | is_fork_parent = (tp != NULL | |
5443 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5444 | ||
5445 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5446 | breakpoints that should be available for the followed inferior. */ | |
5447 | if (!is_fork_parent) | |
f67c0c91 | 5448 | { |
249b5733 PA |
5449 | /* Save the pid as a string before mourning, since that will |
5450 | unpush the remote target, and we need the string after. */ | |
5451 | std::string infpid = target_pid_to_str (pid_to_ptid (pid)); | |
f67c0c91 SDJ |
5452 | |
5453 | target_mourn_inferior (inferior_ptid); | |
5454 | if (print_inferior_events) | |
5455 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5456 | inf->num, infpid.c_str ()); | |
5457 | } | |
de0d863e DB |
5458 | else |
5459 | { | |
5460 | inferior_ptid = null_ptid; | |
5461 | detach_inferior (pid); | |
5462 | } | |
2d717e4f DJ |
5463 | } |
5464 | ||
f6ac5f3d PA |
5465 | void |
5466 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5467 | { |
6e1e1966 | 5468 | remote_detach_1 (from_tty, inf); |
2d717e4f DJ |
5469 | } |
5470 | ||
f6ac5f3d PA |
5471 | void |
5472 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5473 | { |
6e1e1966 | 5474 | remote_detach_1 (from_tty, inf); |
de0d863e DB |
5475 | } |
5476 | ||
5477 | /* Target follow-fork function for remote targets. On entry, and | |
5478 | at return, the current inferior is the fork parent. | |
5479 | ||
5480 | Note that although this is currently only used for extended-remote, | |
5481 | it is named remote_follow_fork in anticipation of using it for the | |
5482 | remote target as well. */ | |
5483 | ||
f6ac5f3d PA |
5484 | int |
5485 | remote_target::follow_fork (int follow_child, int detach_fork) | |
de0d863e DB |
5486 | { |
5487 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5488 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5489 | |
c269dbdb DB |
5490 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5491 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5492 | { |
5493 | /* When following the parent and detaching the child, we detach | |
5494 | the child here. For the case of following the child and | |
5495 | detaching the parent, the detach is done in the target- | |
5496 | independent follow fork code in infrun.c. We can't use | |
5497 | target_detach when detaching an unfollowed child because | |
5498 | the client side doesn't know anything about the child. */ | |
5499 | if (detach_fork && !follow_child) | |
5500 | { | |
5501 | /* Detach the fork child. */ | |
5502 | ptid_t child_ptid; | |
5503 | pid_t child_pid; | |
5504 | ||
5505 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5506 | child_pid = ptid_get_pid (child_ptid); | |
5507 | ||
5508 | remote_detach_pid (child_pid); | |
de0d863e DB |
5509 | } |
5510 | } | |
5511 | return 0; | |
c906108c SS |
5512 | } |
5513 | ||
94585166 DB |
5514 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5515 | in the program space of the new inferior. On entry and at return the | |
5516 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5517 | inferior, which may be the same as the exec'ing inferior unless | |
5518 | follow-exec-mode is "new". */ | |
5519 | ||
f6ac5f3d PA |
5520 | void |
5521 | remote_target::follow_exec (struct inferior *inf, char *execd_pathname) | |
94585166 DB |
5522 | { |
5523 | /* We know that this is a target file name, so if it has the "target:" | |
5524 | prefix we strip it off before saving it in the program space. */ | |
5525 | if (is_target_filename (execd_pathname)) | |
5526 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5527 | ||
5528 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5529 | } | |
5530 | ||
6ad8ae5c DJ |
5531 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5532 | ||
f6ac5f3d PA |
5533 | void |
5534 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5535 | { |
43ff13b4 | 5536 | if (args) |
2d717e4f | 5537 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5538 | |
8020350c DB |
5539 | /* Make sure we unpush even the extended remote targets. Calling |
5540 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5541 | unpush if there is more than one inferior left. */ | |
f6ac5f3d | 5542 | unpush_target (this); |
8020350c | 5543 | generic_mourn_inferior (); |
2d717e4f | 5544 | |
43ff13b4 JM |
5545 | if (from_tty) |
5546 | puts_filtered ("Ending remote debugging.\n"); | |
5547 | } | |
5548 | ||
2d717e4f DJ |
5549 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5550 | be chatty about it. */ | |
5551 | ||
f6ac5f3d PA |
5552 | void |
5553 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5554 | { |
5555 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5556 | int pid; |
96ef3384 | 5557 | char *wait_status = NULL; |
2d717e4f | 5558 | |
74164c56 | 5559 | pid = parse_pid_to_attach (args); |
2d717e4f | 5560 | |
74164c56 JK |
5561 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5562 | way as in other targets. */ | |
2d717e4f | 5563 | |
4082afcc | 5564 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5565 | error (_("This target does not support attaching to a process")); |
5566 | ||
7cee1e54 PA |
5567 | if (from_tty) |
5568 | { | |
5569 | char *exec_file = get_exec_file (0); | |
5570 | ||
5571 | if (exec_file) | |
5572 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5573 | target_pid_to_str (pid_to_ptid (pid))); | |
5574 | else | |
5575 | printf_unfiltered (_("Attaching to %s\n"), | |
5576 | target_pid_to_str (pid_to_ptid (pid))); | |
5577 | ||
5578 | gdb_flush (gdb_stdout); | |
5579 | } | |
5580 | ||
bba74b36 | 5581 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5582 | putpkt (rs->buf); |
5583 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5584 | ||
4082afcc PA |
5585 | switch (packet_ok (rs->buf, |
5586 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5587 | { |
4082afcc | 5588 | case PACKET_OK: |
6efcd9a8 | 5589 | if (!target_is_non_stop_p ()) |
74531fed PA |
5590 | { |
5591 | /* Save the reply for later. */ | |
224c3ddb | 5592 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5593 | strcpy (wait_status, rs->buf); |
5594 | } | |
5595 | else if (strcmp (rs->buf, "OK") != 0) | |
5596 | error (_("Attaching to %s failed with: %s"), | |
5597 | target_pid_to_str (pid_to_ptid (pid)), | |
5598 | rs->buf); | |
4082afcc PA |
5599 | break; |
5600 | case PACKET_UNKNOWN: | |
5601 | error (_("This target does not support attaching to a process")); | |
5602 | default: | |
5603 | error (_("Attaching to %s failed"), | |
5604 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5605 | } |
2d717e4f | 5606 | |
1b6e6f5c | 5607 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5608 | |
2d717e4f | 5609 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5610 | |
6efcd9a8 | 5611 | if (target_is_non_stop_p ()) |
bad34192 PA |
5612 | { |
5613 | struct thread_info *thread; | |
79d7f229 | 5614 | |
bad34192 | 5615 | /* Get list of threads. */ |
f6ac5f3d | 5616 | update_thread_list (); |
82f73884 | 5617 | |
bad34192 PA |
5618 | thread = first_thread_of_process (pid); |
5619 | if (thread) | |
5620 | inferior_ptid = thread->ptid; | |
5621 | else | |
5622 | inferior_ptid = pid_to_ptid (pid); | |
5623 | ||
5624 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5625 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5626 | } |
74531fed | 5627 | else |
bad34192 PA |
5628 | { |
5629 | /* Now, if we have thread information, update inferior_ptid. */ | |
5630 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5631 | ||
5632 | /* Add the main thread to the thread list. */ | |
00aecdcf PA |
5633 | thread_info *thr = add_thread_silent (inferior_ptid); |
5634 | /* Don't consider the thread stopped until we've processed the | |
5635 | saved stop reply. */ | |
5636 | set_executing (thr->ptid, true); | |
bad34192 | 5637 | } |
c0a2216e | 5638 | |
96ef3384 UW |
5639 | /* Next, if the target can specify a description, read it. We do |
5640 | this before anything involving memory or registers. */ | |
5641 | target_find_description (); | |
5642 | ||
6efcd9a8 | 5643 | if (!target_is_non_stop_p ()) |
74531fed PA |
5644 | { |
5645 | /* Use the previously fetched status. */ | |
5646 | gdb_assert (wait_status != NULL); | |
5647 | ||
5648 | if (target_can_async_p ()) | |
5649 | { | |
722247f1 YQ |
5650 | struct notif_event *reply |
5651 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5652 | |
722247f1 | 5653 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5654 | |
6a3753b3 | 5655 | target_async (1); |
74531fed PA |
5656 | } |
5657 | else | |
5658 | { | |
5659 | gdb_assert (wait_status != NULL); | |
5660 | strcpy (rs->buf, wait_status); | |
5661 | rs->cached_wait_status = 1; | |
5662 | } | |
5663 | } | |
5664 | else | |
5665 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5666 | } |
5667 | ||
b9c1d481 AS |
5668 | /* Implementation of the to_post_attach method. */ |
5669 | ||
f6ac5f3d PA |
5670 | void |
5671 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5672 | { |
6efcd9a8 PA |
5673 | /* Get text, data & bss offsets. */ |
5674 | get_offsets (); | |
5675 | ||
b9c1d481 AS |
5676 | /* In certain cases GDB might not have had the chance to start |
5677 | symbol lookup up until now. This could happen if the debugged | |
5678 | binary is not using shared libraries, the vsyscall page is not | |
5679 | present (on Linux) and the binary itself hadn't changed since the | |
5680 | debugging process was started. */ | |
5681 | if (symfile_objfile != NULL) | |
5682 | remote_check_symbols(); | |
5683 | } | |
5684 | ||
c906108c | 5685 | \f |
506fb367 DJ |
5686 | /* Check for the availability of vCont. This function should also check |
5687 | the response. */ | |
c906108c SS |
5688 | |
5689 | static void | |
6d820c5c | 5690 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5691 | { |
2e9f7625 | 5692 | char *buf; |
6d820c5c | 5693 | |
2e9f7625 DJ |
5694 | strcpy (rs->buf, "vCont?"); |
5695 | putpkt (rs->buf); | |
6d820c5c | 5696 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5697 | buf = rs->buf; |
c906108c | 5698 | |
506fb367 | 5699 | /* Make sure that the features we assume are supported. */ |
61012eef | 5700 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5701 | { |
5702 | char *p = &buf[5]; | |
750ce8d1 | 5703 | int support_c, support_C; |
506fb367 | 5704 | |
750ce8d1 YQ |
5705 | rs->supports_vCont.s = 0; |
5706 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5707 | support_c = 0; |
5708 | support_C = 0; | |
d458bd84 | 5709 | rs->supports_vCont.t = 0; |
c1e36e3e | 5710 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5711 | while (p && *p == ';') |
5712 | { | |
5713 | p++; | |
5714 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5715 | rs->supports_vCont.s = 1; |
506fb367 | 5716 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5717 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5718 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5719 | support_c = 1; | |
5720 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5721 | support_C = 1; | |
74531fed | 5722 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5723 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5724 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5725 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5726 | |
5727 | p = strchr (p, ';'); | |
5728 | } | |
c906108c | 5729 | |
750ce8d1 YQ |
5730 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5731 | BUF will make packet_ok disable the packet. */ | |
5732 | if (!support_c || !support_C) | |
506fb367 DJ |
5733 | buf[0] = 0; |
5734 | } | |
c906108c | 5735 | |
444abaca | 5736 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5737 | } |
c906108c | 5738 | |
0d8f58ca PA |
5739 | /* Helper function for building "vCont" resumptions. Write a |
5740 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5741 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5742 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5743 | resumed thread should be single-stepped and/or signalled. If PTID | |
5744 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5745 | represents a process, then all threads of the process are resumed; | |
5746 | the thread to be stepped and/or signalled is given in the global | |
5747 | INFERIOR_PTID. */ | |
5748 | ||
5749 | static char * | |
5750 | append_resumption (char *p, char *endp, | |
2ea28649 | 5751 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5752 | { |
5753 | struct remote_state *rs = get_remote_state (); | |
5754 | ||
a493e3e2 | 5755 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5756 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5757 | else if (step |
5758 | /* GDB is willing to range step. */ | |
5759 | && use_range_stepping | |
5760 | /* Target supports range stepping. */ | |
5761 | && rs->supports_vCont.r | |
5762 | /* We don't currently support range stepping multiple | |
5763 | threads with a wildcard (though the protocol allows it, | |
5764 | so stubs shouldn't make an active effort to forbid | |
5765 | it). */ | |
5766 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5767 | { | |
5768 | struct thread_info *tp; | |
5769 | ||
5770 | if (ptid_equal (ptid, minus_one_ptid)) | |
5771 | { | |
5772 | /* If we don't know about the target thread's tid, then | |
5773 | we're resuming magic_null_ptid (see caller). */ | |
5774 | tp = find_thread_ptid (magic_null_ptid); | |
5775 | } | |
5776 | else | |
5777 | tp = find_thread_ptid (ptid); | |
5778 | gdb_assert (tp != NULL); | |
5779 | ||
5780 | if (tp->control.may_range_step) | |
5781 | { | |
5782 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5783 | ||
5784 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5785 | phex_nz (tp->control.step_range_start, | |
5786 | addr_size), | |
5787 | phex_nz (tp->control.step_range_end, | |
5788 | addr_size)); | |
5789 | } | |
5790 | else | |
5791 | p += xsnprintf (p, endp - p, ";s"); | |
5792 | } | |
0d8f58ca PA |
5793 | else if (step) |
5794 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5795 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5796 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5797 | else | |
5798 | p += xsnprintf (p, endp - p, ";c"); | |
5799 | ||
5800 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5801 | { | |
5802 | ptid_t nptid; | |
5803 | ||
5804 | /* All (-1) threads of process. */ | |
ba348170 | 5805 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5806 | |
5807 | p += xsnprintf (p, endp - p, ":"); | |
5808 | p = write_ptid (p, endp, nptid); | |
5809 | } | |
5810 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5811 | { | |
5812 | p += xsnprintf (p, endp - p, ":"); | |
5813 | p = write_ptid (p, endp, ptid); | |
5814 | } | |
5815 | ||
5816 | return p; | |
5817 | } | |
5818 | ||
799a2abe PA |
5819 | /* Clear the thread's private info on resume. */ |
5820 | ||
5821 | static void | |
5822 | resume_clear_thread_private_info (struct thread_info *thread) | |
5823 | { | |
5824 | if (thread->priv != NULL) | |
5825 | { | |
7aabaf9d SM |
5826 | remote_thread_info *priv = get_remote_thread_info (thread); |
5827 | ||
5828 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5829 | priv->watch_data_address = 0; | |
799a2abe PA |
5830 | } |
5831 | } | |
5832 | ||
e5ef252a PA |
5833 | /* Append a vCont continue-with-signal action for threads that have a |
5834 | non-zero stop signal. */ | |
5835 | ||
5836 | static char * | |
5837 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5838 | { | |
5839 | struct thread_info *thread; | |
5840 | ||
034f788c | 5841 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5842 | if (ptid_match (thread->ptid, ptid) |
5843 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5844 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5845 | { |
5846 | p = append_resumption (p, endp, thread->ptid, | |
5847 | 0, thread->suspend.stop_signal); | |
5848 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5849 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5850 | } |
5851 | ||
5852 | return p; | |
5853 | } | |
5854 | ||
7b68ffbb PA |
5855 | /* Set the target running, using the packets that use Hc |
5856 | (c/s/C/S). */ | |
5857 | ||
5858 | static void | |
5859 | remote_resume_with_hc (struct target_ops *ops, | |
5860 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5861 | { | |
5862 | struct remote_state *rs = get_remote_state (); | |
5863 | struct thread_info *thread; | |
5864 | char *buf; | |
5865 | ||
5866 | rs->last_sent_signal = siggnal; | |
5867 | rs->last_sent_step = step; | |
5868 | ||
5869 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5870 | thread. */ | |
5871 | if (ptid_equal (ptid, minus_one_ptid)) | |
5872 | set_continue_thread (any_thread_ptid); | |
5873 | else | |
5874 | set_continue_thread (ptid); | |
5875 | ||
5876 | ALL_NON_EXITED_THREADS (thread) | |
5877 | resume_clear_thread_private_info (thread); | |
5878 | ||
5879 | buf = rs->buf; | |
5880 | if (execution_direction == EXEC_REVERSE) | |
5881 | { | |
5882 | /* We don't pass signals to the target in reverse exec mode. */ | |
5883 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5884 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5885 | siggnal); | |
5886 | ||
5887 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5888 | error (_("Remote reverse-step not supported.")); | |
5889 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5890 | error (_("Remote reverse-continue not supported.")); | |
5891 | ||
5892 | strcpy (buf, step ? "bs" : "bc"); | |
5893 | } | |
5894 | else if (siggnal != GDB_SIGNAL_0) | |
5895 | { | |
5896 | buf[0] = step ? 'S' : 'C'; | |
5897 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5898 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5899 | buf[3] = '\0'; | |
5900 | } | |
5901 | else | |
5902 | strcpy (buf, step ? "s" : "c"); | |
5903 | ||
5904 | putpkt (buf); | |
5905 | } | |
5906 | ||
506fb367 DJ |
5907 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5908 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5909 | resumed thread should be single-stepped and/or signalled. If PTID |
5910 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5911 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5912 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5913 | |
7b68ffbb PA |
5914 | This function issues a strict subset of all possible vCont commands |
5915 | at the moment. */ | |
44eaed12 | 5916 | |
506fb367 | 5917 | static int |
7b68ffbb | 5918 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5919 | { |
5920 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5921 | char *p; |
5922 | char *endp; | |
44eaed12 | 5923 | |
7b68ffbb PA |
5924 | /* No reverse execution actions defined for vCont. */ |
5925 | if (execution_direction == EXEC_REVERSE) | |
5926 | return 0; | |
5927 | ||
4082afcc | 5928 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5929 | remote_vcont_probe (rs); |
44eaed12 | 5930 | |
4082afcc | 5931 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5932 | return 0; |
44eaed12 | 5933 | |
82f73884 PA |
5934 | p = rs->buf; |
5935 | endp = rs->buf + get_remote_packet_size (); | |
5936 | ||
506fb367 DJ |
5937 | /* If we could generate a wider range of packets, we'd have to worry |
5938 | about overflowing BUF. Should there be a generic | |
5939 | "multi-part-packet" packet? */ | |
5940 | ||
0d8f58ca PA |
5941 | p += xsnprintf (p, endp - p, "vCont"); |
5942 | ||
79d7f229 | 5943 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5944 | { |
79d7f229 PA |
5945 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5946 | so we don't have any TID numbers the inferior will | |
5947 | understand. Make sure to only send forms that do not specify | |
5948 | a TID. */ | |
a9cbf802 | 5949 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5950 | } |
0d8f58ca | 5951 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5952 | { |
0d8f58ca PA |
5953 | /* Resume all threads (of all processes, or of a single |
5954 | process), with preference for INFERIOR_PTID. This assumes | |
5955 | inferior_ptid belongs to the set of all threads we are about | |
5956 | to resume. */ | |
a493e3e2 | 5957 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5958 | { |
0d8f58ca PA |
5959 | /* Step inferior_ptid, with or without signal. */ |
5960 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5961 | } |
0d8f58ca | 5962 | |
e5ef252a PA |
5963 | /* Also pass down any pending signaled resumption for other |
5964 | threads not the current. */ | |
5965 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5966 | ||
0d8f58ca | 5967 | /* And continue others without a signal. */ |
a493e3e2 | 5968 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5969 | } |
5970 | else | |
506fb367 DJ |
5971 | { |
5972 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5973 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5974 | } |
c906108c | 5975 | |
82f73884 PA |
5976 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5977 | putpkt (rs->buf); | |
506fb367 | 5978 | |
6efcd9a8 | 5979 | if (target_is_non_stop_p ()) |
74531fed PA |
5980 | { |
5981 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5982 | reply will be reported asynchronously by means of a `%Stop' | |
5983 | notification. */ | |
5984 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5985 | if (strcmp (rs->buf, "OK") != 0) | |
5986 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5987 | } | |
5988 | ||
506fb367 | 5989 | return 1; |
c906108c | 5990 | } |
43ff13b4 | 5991 | |
506fb367 DJ |
5992 | /* Tell the remote machine to resume. */ |
5993 | ||
f6ac5f3d PA |
5994 | void |
5995 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 5996 | { |
d01949b6 | 5997 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 5998 | |
85ad3aaf PA |
5999 | /* When connected in non-stop mode, the core resumes threads |
6000 | individually. Resuming remote threads directly in target_resume | |
6001 | would thus result in sending one packet per thread. Instead, to | |
6002 | minimize roundtrip latency, here we just store the resume | |
6003 | request; the actual remote resumption will be done in | |
6004 | target_commit_resume / remote_commit_resume, where we'll be able | |
6005 | to do vCont action coalescing. */ | |
f6ac5f3d | 6006 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6007 | { |
7aabaf9d | 6008 | remote_thread_info *remote_thr; |
85ad3aaf PA |
6009 | |
6010 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
7aabaf9d | 6011 | remote_thr = get_remote_thread_info (inferior_ptid); |
85ad3aaf | 6012 | else |
7aabaf9d SM |
6013 | remote_thr = get_remote_thread_info (ptid); |
6014 | ||
85ad3aaf PA |
6015 | remote_thr->last_resume_step = step; |
6016 | remote_thr->last_resume_sig = siggnal; | |
6017 | return; | |
6018 | } | |
6019 | ||
722247f1 YQ |
6020 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6021 | (explained in remote-notif.c:handle_notification) so | |
6022 | remote_notif_process is not called. We need find a place where | |
6023 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6024 | before resuming inferior, because inferior was stopped and no RSP | |
6025 | traffic at that moment. */ | |
6efcd9a8 | 6026 | if (!target_is_non_stop_p ()) |
5965e028 | 6027 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6028 | |
f6ac5f3d | 6029 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6030 | |
7b68ffbb PA |
6031 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6032 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
f6ac5f3d | 6033 | remote_resume_with_hc (this, ptid, step, siggnal); |
43ff13b4 | 6034 | |
2acceee2 | 6035 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6036 | with the event loop. NOTE: this is the one place where all the |
6037 | execution commands end up. We could alternatively do this in each | |
23860348 | 6038 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6039 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6040 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6041 | NOT asynchronously. */ |
362646f5 | 6042 | if (target_can_async_p ()) |
6a3753b3 | 6043 | target_async (1); |
e24a49d8 PA |
6044 | |
6045 | /* We've just told the target to resume. The remote server will | |
6046 | wait for the inferior to stop, and then send a stop reply. In | |
6047 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6048 | because the stub wouldn't be ready to process it. This applies |
6049 | only to the base all-stop protocol, however. In non-stop (which | |
6050 | only supports vCont), the stub replies with an "OK", and is | |
6051 | immediate able to process further serial input. */ | |
6efcd9a8 | 6052 | if (!target_is_non_stop_p ()) |
74531fed | 6053 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6054 | } |
85ad3aaf PA |
6055 | |
6056 | static void check_pending_events_prevent_wildcard_vcont | |
6057 | (int *may_global_wildcard_vcont); | |
6058 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
6059 | ||
6060 | /* Private per-inferior info for target remote processes. */ | |
6061 | ||
089354bb | 6062 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6063 | { |
6064 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6065 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6066 | }; |
6067 | ||
089354bb SM |
6068 | /* Get the remote private inferior data associated to INF. */ |
6069 | ||
6070 | static remote_inferior * | |
6071 | get_remote_inferior (inferior *inf) | |
6072 | { | |
6073 | if (inf->priv == NULL) | |
6074 | inf->priv.reset (new remote_inferior); | |
6075 | ||
6076 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6077 | } | |
6078 | ||
85ad3aaf PA |
6079 | /* Structure used to track the construction of a vCont packet in the |
6080 | outgoing packet buffer. This is used to send multiple vCont | |
6081 | packets if we have more actions than would fit a single packet. */ | |
6082 | ||
6083 | struct vcont_builder | |
6084 | { | |
6085 | /* Pointer to the first action. P points here if no action has been | |
6086 | appended yet. */ | |
6087 | char *first_action; | |
6088 | ||
6089 | /* Where the next action will be appended. */ | |
6090 | char *p; | |
6091 | ||
6092 | /* The end of the buffer. Must never write past this. */ | |
6093 | char *endp; | |
6094 | }; | |
6095 | ||
6096 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6097 | ||
6098 | static void | |
6099 | vcont_builder_restart (struct vcont_builder *builder) | |
6100 | { | |
6101 | struct remote_state *rs = get_remote_state (); | |
6102 | ||
6103 | builder->p = rs->buf; | |
6104 | builder->endp = rs->buf + get_remote_packet_size (); | |
6105 | builder->p += xsnprintf (builder->p, builder->endp - builder->p, "vCont"); | |
6106 | builder->first_action = builder->p; | |
6107 | } | |
6108 | ||
6109 | /* If the vCont packet being built has any action, send it to the | |
6110 | remote end. */ | |
6111 | ||
6112 | static void | |
6113 | vcont_builder_flush (struct vcont_builder *builder) | |
6114 | { | |
6115 | struct remote_state *rs; | |
6116 | ||
6117 | if (builder->p == builder->first_action) | |
6118 | return; | |
6119 | ||
6120 | rs = get_remote_state (); | |
6121 | putpkt (rs->buf); | |
6122 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6123 | if (strcmp (rs->buf, "OK") != 0) | |
6124 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
6125 | } | |
6126 | ||
6127 | /* The largest action is range-stepping, with its two addresses. This | |
6128 | is more than sufficient. If a new, bigger action is created, it'll | |
6129 | quickly trigger a failed assertion in append_resumption (and we'll | |
6130 | just bump this). */ | |
6131 | #define MAX_ACTION_SIZE 200 | |
6132 | ||
6133 | /* Append a new vCont action in the outgoing packet being built. If | |
6134 | the action doesn't fit the packet along with previous actions, push | |
6135 | what we've got so far to the remote end and start over a new vCont | |
6136 | packet (with the new action). */ | |
6137 | ||
6138 | static void | |
6139 | vcont_builder_push_action (struct vcont_builder *builder, | |
6140 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
6141 | { | |
6142 | char buf[MAX_ACTION_SIZE + 1]; | |
6143 | char *endp; | |
6144 | size_t rsize; | |
6145 | ||
6146 | endp = append_resumption (buf, buf + sizeof (buf), | |
6147 | ptid, step, siggnal); | |
6148 | ||
6149 | /* Check whether this new action would fit in the vCont packet along | |
6150 | with previous actions. If not, send what we've got so far and | |
6151 | start a new vCont packet. */ | |
6152 | rsize = endp - buf; | |
6153 | if (rsize > builder->endp - builder->p) | |
6154 | { | |
6155 | vcont_builder_flush (builder); | |
6156 | vcont_builder_restart (builder); | |
6157 | ||
6158 | /* Should now fit. */ | |
6159 | gdb_assert (rsize <= builder->endp - builder->p); | |
6160 | } | |
6161 | ||
6162 | memcpy (builder->p, buf, rsize); | |
6163 | builder->p += rsize; | |
6164 | *builder->p = '\0'; | |
6165 | } | |
6166 | ||
6167 | /* to_commit_resume implementation. */ | |
6168 | ||
f6ac5f3d PA |
6169 | void |
6170 | remote_target::commit_resume () | |
85ad3aaf | 6171 | { |
85ad3aaf PA |
6172 | struct inferior *inf; |
6173 | struct thread_info *tp; | |
6174 | int any_process_wildcard; | |
6175 | int may_global_wildcard_vcont; | |
6176 | struct vcont_builder vcont_builder; | |
6177 | ||
6178 | /* If connected in all-stop mode, we'd send the remote resume | |
6179 | request directly from remote_resume. Likewise if | |
6180 | reverse-debugging, as there are no defined vCont actions for | |
6181 | reverse execution. */ | |
f6ac5f3d | 6182 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6183 | return; |
6184 | ||
6185 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6186 | instead of resuming all threads of each process individually. | |
6187 | However, if any thread of a process must remain halted, we can't | |
6188 | send wildcard resumes and must send one action per thread. | |
6189 | ||
6190 | Care must be taken to not resume threads/processes the server | |
6191 | side already told us are stopped, but the core doesn't know about | |
6192 | yet, because the events are still in the vStopped notification | |
6193 | queue. For example: | |
6194 | ||
6195 | #1 => vCont s:p1.1;c | |
6196 | #2 <= OK | |
6197 | #3 <= %Stopped T05 p1.1 | |
6198 | #4 => vStopped | |
6199 | #5 <= T05 p1.2 | |
6200 | #6 => vStopped | |
6201 | #7 <= OK | |
6202 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6203 | #9 => vCont s:p1.1;c | |
6204 | ||
6205 | The last vCont above would resume thread p1.2 by mistake, because | |
6206 | the server has no idea that the event for p1.2 had not been | |
6207 | handled yet. | |
6208 | ||
6209 | The server side must similarly ignore resume actions for the | |
6210 | thread that has a pending %Stopped notification (and any other | |
6211 | threads with events pending), until GDB acks the notification | |
6212 | with vStopped. Otherwise, e.g., the following case is | |
6213 | mishandled: | |
6214 | ||
6215 | #1 => g (or any other packet) | |
6216 | #2 <= [registers] | |
6217 | #3 <= %Stopped T05 p1.2 | |
6218 | #4 => vCont s:p1.1;c | |
6219 | #5 <= OK | |
6220 | ||
6221 | Above, the server must not resume thread p1.2. GDB can't know | |
6222 | that p1.2 stopped until it acks the %Stopped notification, and | |
6223 | since from GDB's perspective all threads should be running, it | |
6224 | sends a "c" action. | |
6225 | ||
6226 | Finally, special care must also be given to handling fork/vfork | |
6227 | events. A (v)fork event actually tells us that two processes | |
6228 | stopped -- the parent and the child. Until we follow the fork, | |
6229 | we must not resume the child. Therefore, if we have a pending | |
6230 | fork follow, we must not send a global wildcard resume action | |
6231 | (vCont;c). We can still send process-wide wildcards though. */ | |
6232 | ||
6233 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6234 | may_global_wildcard_vcont = 1; | |
6235 | ||
6236 | /* And assume every process is individually wildcard-able too. */ | |
6237 | ALL_NON_EXITED_INFERIORS (inf) | |
6238 | { | |
089354bb SM |
6239 | remote_inferior *priv = get_remote_inferior (inf); |
6240 | ||
6241 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6242 | } |
6243 | ||
6244 | /* Check for any pending events (not reported or processed yet) and | |
6245 | disable process and global wildcard resumes appropriately. */ | |
6246 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6247 | ||
6248 | ALL_NON_EXITED_THREADS (tp) | |
6249 | { | |
6250 | /* If a thread of a process is not meant to be resumed, then we | |
6251 | can't wildcard that process. */ | |
6252 | if (!tp->executing) | |
6253 | { | |
089354bb | 6254 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6255 | |
6256 | /* And if we can't wildcard a process, we can't wildcard | |
6257 | everything either. */ | |
6258 | may_global_wildcard_vcont = 0; | |
6259 | continue; | |
6260 | } | |
6261 | ||
6262 | /* If a thread is the parent of an unfollowed fork, then we | |
6263 | can't do a global wildcard, as that would resume the fork | |
6264 | child. */ | |
6265 | if (is_pending_fork_parent_thread (tp)) | |
6266 | may_global_wildcard_vcont = 0; | |
6267 | } | |
6268 | ||
6269 | /* Now let's build the vCont packet(s). Actions must be appended | |
6270 | from narrower to wider scopes (thread -> process -> global). If | |
6271 | we end up with too many actions for a single packet vcont_builder | |
6272 | flushes the current vCont packet to the remote side and starts a | |
6273 | new one. */ | |
6274 | vcont_builder_restart (&vcont_builder); | |
6275 | ||
6276 | /* Threads first. */ | |
6277 | ALL_NON_EXITED_THREADS (tp) | |
6278 | { | |
7aabaf9d | 6279 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6280 | |
6281 | if (!tp->executing || remote_thr->vcont_resumed) | |
6282 | continue; | |
6283 | ||
6284 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6285 | ||
6286 | if (!remote_thr->last_resume_step | |
6287 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6288 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6289 | { |
6290 | /* We'll send a wildcard resume instead. */ | |
6291 | remote_thr->vcont_resumed = 1; | |
6292 | continue; | |
6293 | } | |
6294 | ||
6295 | vcont_builder_push_action (&vcont_builder, tp->ptid, | |
6296 | remote_thr->last_resume_step, | |
6297 | remote_thr->last_resume_sig); | |
6298 | remote_thr->vcont_resumed = 1; | |
6299 | } | |
6300 | ||
6301 | /* Now check whether we can send any process-wide wildcard. This is | |
6302 | to avoid sending a global wildcard in the case nothing is | |
6303 | supposed to be resumed. */ | |
6304 | any_process_wildcard = 0; | |
6305 | ||
6306 | ALL_NON_EXITED_INFERIORS (inf) | |
6307 | { | |
089354bb | 6308 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6309 | { |
6310 | any_process_wildcard = 1; | |
6311 | break; | |
6312 | } | |
6313 | } | |
6314 | ||
6315 | if (any_process_wildcard) | |
6316 | { | |
6317 | /* If all processes are wildcard-able, then send a single "c" | |
6318 | action, otherwise, send an "all (-1) threads of process" | |
6319 | continue action for each running process, if any. */ | |
6320 | if (may_global_wildcard_vcont) | |
6321 | { | |
6322 | vcont_builder_push_action (&vcont_builder, minus_one_ptid, | |
6323 | 0, GDB_SIGNAL_0); | |
6324 | } | |
6325 | else | |
6326 | { | |
6327 | ALL_NON_EXITED_INFERIORS (inf) | |
6328 | { | |
089354bb | 6329 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6330 | { |
6331 | vcont_builder_push_action (&vcont_builder, | |
6332 | pid_to_ptid (inf->pid), | |
6333 | 0, GDB_SIGNAL_0); | |
6334 | } | |
6335 | } | |
6336 | } | |
6337 | } | |
6338 | ||
6339 | vcont_builder_flush (&vcont_builder); | |
6340 | } | |
6341 | ||
c906108c | 6342 | \f |
43ff13b4 | 6343 | |
74531fed PA |
6344 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6345 | thread, all threads of a remote process, or all threads of all | |
6346 | processes. */ | |
6347 | ||
6348 | static void | |
6349 | remote_stop_ns (ptid_t ptid) | |
6350 | { | |
6351 | struct remote_state *rs = get_remote_state (); | |
6352 | char *p = rs->buf; | |
6353 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6354 | |
4082afcc | 6355 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6356 | remote_vcont_probe (rs); |
6357 | ||
d458bd84 | 6358 | if (!rs->supports_vCont.t) |
74531fed PA |
6359 | error (_("Remote server does not support stopping threads")); |
6360 | ||
f91d3df5 PA |
6361 | if (ptid_equal (ptid, minus_one_ptid) |
6362 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6363 | p += xsnprintf (p, endp - p, "vCont;t"); |
6364 | else | |
6365 | { | |
6366 | ptid_t nptid; | |
6367 | ||
74531fed PA |
6368 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6369 | ||
6370 | if (ptid_is_pid (ptid)) | |
6371 | /* All (-1) threads of process. */ | |
ba348170 | 6372 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6373 | else |
6374 | { | |
6375 | /* Small optimization: if we already have a stop reply for | |
6376 | this thread, no use in telling the stub we want this | |
6377 | stopped. */ | |
6378 | if (peek_stop_reply (ptid)) | |
6379 | return; | |
6380 | ||
6381 | nptid = ptid; | |
6382 | } | |
6383 | ||
a9cbf802 | 6384 | write_ptid (p, endp, nptid); |
74531fed PA |
6385 | } |
6386 | ||
6387 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6388 | come in asynchronously by notification. */ | |
6389 | putpkt (rs->buf); | |
6390 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6391 | if (strcmp (rs->buf, "OK") != 0) | |
6392 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6393 | } | |
6394 | ||
bfedc46a PA |
6395 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6396 | interrupt the remote target. It is undefined which thread of which | |
6397 | process reports the interrupt. */ | |
74531fed PA |
6398 | |
6399 | static void | |
de979965 | 6400 | remote_interrupt_as (void) |
74531fed PA |
6401 | { |
6402 | struct remote_state *rs = get_remote_state (); | |
6403 | ||
3a29589a DJ |
6404 | rs->ctrlc_pending_p = 1; |
6405 | ||
74531fed PA |
6406 | /* If the inferior is stopped already, but the core didn't know |
6407 | about it yet, just ignore the request. The cached wait status | |
6408 | will be collected in remote_wait. */ | |
6409 | if (rs->cached_wait_status) | |
6410 | return; | |
6411 | ||
9a7071a8 JB |
6412 | /* Send interrupt_sequence to remote target. */ |
6413 | send_interrupt_sequence (); | |
74531fed PA |
6414 | } |
6415 | ||
de979965 PA |
6416 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6417 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6418 | reports the interrupt. Throws an error if the packet is not |
6419 | supported by the server. */ | |
de979965 | 6420 | |
e42de8c7 | 6421 | static void |
de979965 PA |
6422 | remote_interrupt_ns (void) |
6423 | { | |
6424 | struct remote_state *rs = get_remote_state (); | |
6425 | char *p = rs->buf; | |
6426 | char *endp = rs->buf + get_remote_packet_size (); | |
6427 | ||
6428 | xsnprintf (p, endp - p, "vCtrlC"); | |
6429 | ||
6430 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6431 | come in asynchronously by notification. */ | |
6432 | putpkt (rs->buf); | |
6433 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6434 | ||
6435 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6436 | { | |
6437 | case PACKET_OK: | |
6438 | break; | |
6439 | case PACKET_UNKNOWN: | |
e42de8c7 | 6440 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6441 | case PACKET_ERROR: |
6442 | error (_("Interrupting target failed: %s"), rs->buf); | |
6443 | } | |
de979965 PA |
6444 | } |
6445 | ||
bfedc46a | 6446 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6447 | |
f6ac5f3d PA |
6448 | void |
6449 | remote_target::stop (ptid_t ptid) | |
c906108c | 6450 | { |
7a292a7a | 6451 | if (remote_debug) |
0f71a2f6 | 6452 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6453 | |
6efcd9a8 | 6454 | if (target_is_non_stop_p ()) |
74531fed | 6455 | remote_stop_ns (ptid); |
c906108c | 6456 | else |
bfedc46a PA |
6457 | { |
6458 | /* We don't currently have a way to transparently pause the | |
6459 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6460 | remote_interrupt_as (); |
bfedc46a PA |
6461 | } |
6462 | } | |
6463 | ||
6464 | /* Implement the to_interrupt function for the remote targets. */ | |
6465 | ||
f6ac5f3d PA |
6466 | void |
6467 | remote_target::interrupt () | |
bfedc46a PA |
6468 | { |
6469 | if (remote_debug) | |
6470 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6471 | ||
e42de8c7 PA |
6472 | if (target_is_non_stop_p ()) |
6473 | remote_interrupt_ns (); | |
bfedc46a | 6474 | else |
e42de8c7 | 6475 | remote_interrupt_as (); |
c906108c SS |
6476 | } |
6477 | ||
93692b58 PA |
6478 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6479 | ||
f6ac5f3d PA |
6480 | void |
6481 | remote_target::pass_ctrlc () | |
93692b58 PA |
6482 | { |
6483 | struct remote_state *rs = get_remote_state (); | |
6484 | ||
6485 | if (remote_debug) | |
6486 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6487 | ||
6488 | /* If we're starting up, we're not fully synced yet. Quit | |
6489 | immediately. */ | |
6490 | if (rs->starting_up) | |
6491 | quit (); | |
6492 | /* If ^C has already been sent once, offer to disconnect. */ | |
6493 | else if (rs->ctrlc_pending_p) | |
6494 | interrupt_query (); | |
6495 | else | |
e671cd59 | 6496 | target_interrupt (); |
93692b58 PA |
6497 | } |
6498 | ||
c906108c SS |
6499 | /* Ask the user what to do when an interrupt is received. */ |
6500 | ||
6501 | static void | |
fba45db2 | 6502 | interrupt_query (void) |
c906108c | 6503 | { |
abc56d60 | 6504 | struct remote_state *rs = get_remote_state (); |
c906108c | 6505 | |
abc56d60 | 6506 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6507 | { |
abc56d60 PA |
6508 | if (query (_("The target is not responding to interrupt requests.\n" |
6509 | "Stop debugging it? "))) | |
74531fed | 6510 | { |
78a095c3 | 6511 | remote_unpush_target (); |
abc56d60 | 6512 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6513 | } |
6514 | } | |
abc56d60 PA |
6515 | else |
6516 | { | |
6517 | if (query (_("Interrupted while waiting for the program.\n" | |
6518 | "Give up waiting? "))) | |
6519 | quit (); | |
6520 | } | |
c906108c SS |
6521 | } |
6522 | ||
6426a772 JM |
6523 | /* Enable/disable target terminal ownership. Most targets can use |
6524 | terminal groups to control terminal ownership. Remote targets are | |
6525 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6526 | is required. */ |
6426a772 | 6527 | |
f6ac5f3d PA |
6528 | void |
6529 | remote_target::terminal_inferior () | |
6426a772 | 6530 | { |
6426a772 JM |
6531 | /* NOTE: At this point we could also register our selves as the |
6532 | recipient of all input. Any characters typed could then be | |
23860348 | 6533 | passed on down to the target. */ |
6426a772 JM |
6534 | } |
6535 | ||
f6ac5f3d PA |
6536 | void |
6537 | remote_target::terminal_ours () | |
6426a772 | 6538 | { |
6426a772 JM |
6539 | } |
6540 | ||
176a6961 | 6541 | static void |
917317f4 | 6542 | remote_console_output (char *msg) |
c906108c SS |
6543 | { |
6544 | char *p; | |
6545 | ||
c5aa993b | 6546 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6547 | { |
6548 | char tb[2]; | |
6549 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6550 | |
c906108c SS |
6551 | tb[0] = c; |
6552 | tb[1] = 0; | |
43ff13b4 | 6553 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6554 | } |
00db5b94 PA |
6555 | gdb_flush (gdb_stdtarg); |
6556 | } | |
74531fed | 6557 | |
74531fed PA |
6558 | DEF_VEC_O(cached_reg_t); |
6559 | ||
722247f1 | 6560 | typedef struct stop_reply |
74531fed | 6561 | { |
722247f1 | 6562 | struct notif_event base; |
74531fed | 6563 | |
722247f1 | 6564 | /* The identifier of the thread about this event */ |
74531fed PA |
6565 | ptid_t ptid; |
6566 | ||
340e3c99 | 6567 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6568 | connection, represented by a remote_state object, is closed, |
6569 | all the associated stop_reply events should be released. */ | |
6570 | struct remote_state *rs; | |
6571 | ||
74531fed PA |
6572 | struct target_waitstatus ws; |
6573 | ||
5cd63fda PA |
6574 | /* The architecture associated with the expedited registers. */ |
6575 | gdbarch *arch; | |
6576 | ||
15148d6a PA |
6577 | /* Expedited registers. This makes remote debugging a bit more |
6578 | efficient for those targets that provide critical registers as | |
6579 | part of their normal status mechanism (as another roundtrip to | |
6580 | fetch them is avoided). */ | |
74531fed PA |
6581 | VEC(cached_reg_t) *regcache; |
6582 | ||
f7e6eed5 PA |
6583 | enum target_stop_reason stop_reason; |
6584 | ||
74531fed PA |
6585 | CORE_ADDR watch_data_address; |
6586 | ||
dc146f7c | 6587 | int core; |
722247f1 | 6588 | } *stop_reply_p; |
a744cf53 | 6589 | |
722247f1 YQ |
6590 | DECLARE_QUEUE_P (stop_reply_p); |
6591 | DEFINE_QUEUE_P (stop_reply_p); | |
6592 | /* The list of already fetched and acknowledged stop events. This | |
6593 | queue is used for notification Stop, and other notifications | |
6594 | don't need queue for their events, because the notification events | |
6595 | of Stop can't be consumed immediately, so that events should be | |
6596 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6597 | time. Other notifications can consume their events immediately, | |
6598 | so queue is not needed for them. */ | |
6599 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6600 | |
6601 | static void | |
6602 | stop_reply_xfree (struct stop_reply *r) | |
6603 | { | |
f48ff2a7 | 6604 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6605 | } |
6606 | ||
221e1a37 PA |
6607 | /* Return the length of the stop reply queue. */ |
6608 | ||
6609 | static int | |
6610 | stop_reply_queue_length (void) | |
6611 | { | |
6612 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6613 | } | |
6614 | ||
722247f1 YQ |
6615 | static void |
6616 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6617 | struct notif_event *event) | |
6618 | { | |
6619 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6620 | } | |
6621 | ||
6622 | static void | |
6623 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6624 | struct notif_event *event) | |
6625 | { | |
6626 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6627 | ||
6628 | /* acknowledge */ | |
f5c4fcd9 | 6629 | putpkt (self->ack_command); |
722247f1 YQ |
6630 | |
6631 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6632 | /* We got an unknown stop reply. */ | |
6633 | error (_("Unknown stop reply")); | |
6634 | ||
6635 | push_stop_reply (stop_reply); | |
6636 | } | |
6637 | ||
6638 | static int | |
6639 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6640 | { | |
6641 | /* We can't get pending events in remote_notif_process for | |
6642 | notification stop, and we have to do this in remote_wait_ns | |
6643 | instead. If we fetch all queued events from stub, remote stub | |
6644 | may exit and we have no chance to process them back in | |
6645 | remote_wait_ns. */ | |
6646 | mark_async_event_handler (remote_async_inferior_event_token); | |
6647 | return 0; | |
6648 | } | |
6649 | ||
6650 | static void | |
6651 | stop_reply_dtr (struct notif_event *event) | |
6652 | { | |
6653 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6654 | cached_reg_t *reg; |
6655 | int ix; | |
6656 | ||
6657 | for (ix = 0; | |
6658 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6659 | ix++) | |
6660 | xfree (reg->data); | |
722247f1 YQ |
6661 | |
6662 | VEC_free (cached_reg_t, r->regcache); | |
6663 | } | |
6664 | ||
6665 | static struct notif_event * | |
6666 | remote_notif_stop_alloc_reply (void) | |
6667 | { | |
8d749320 SM |
6668 | /* We cast to a pointer to the "base class". */ |
6669 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6670 | |
6671 | r->dtr = stop_reply_dtr; | |
6672 | ||
6673 | return r; | |
6674 | } | |
6675 | ||
6676 | /* A client of notification Stop. */ | |
6677 | ||
6678 | struct notif_client notif_client_stop = | |
6679 | { | |
6680 | "Stop", | |
6681 | "vStopped", | |
6682 | remote_notif_stop_parse, | |
6683 | remote_notif_stop_ack, | |
6684 | remote_notif_stop_can_get_pending_events, | |
6685 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6686 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6687 | }; |
6688 | ||
6689 | /* A parameter to pass data in and out. */ | |
6690 | ||
6691 | struct queue_iter_param | |
6692 | { | |
6693 | void *input; | |
6694 | struct stop_reply *output; | |
6695 | }; | |
6696 | ||
85ad3aaf | 6697 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6698 | the pid of the process that owns the threads we want to check, or |
6699 | -1 if we want to check all threads. */ | |
6700 | ||
6701 | static int | |
6702 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6703 | ptid_t thread_ptid) | |
6704 | { | |
6705 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6706 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6707 | { | |
6708 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6709 | return 1; | |
6710 | } | |
6711 | ||
6712 | return 0; | |
6713 | } | |
6714 | ||
85ad3aaf PA |
6715 | /* Return the thread's pending status used to determine whether the |
6716 | thread is a fork parent stopped at a fork event. */ | |
6717 | ||
6718 | static struct target_waitstatus * | |
6719 | thread_pending_fork_status (struct thread_info *thread) | |
6720 | { | |
6721 | if (thread->suspend.waitstatus_pending_p) | |
6722 | return &thread->suspend.waitstatus; | |
6723 | else | |
6724 | return &thread->pending_follow; | |
6725 | } | |
6726 | ||
6727 | /* Determine if THREAD is a pending fork parent thread. */ | |
6728 | ||
6729 | static int | |
6730 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6731 | { | |
6732 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6733 | int pid = -1; | |
6734 | ||
6735 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6736 | } | |
6737 | ||
cbb8991c DB |
6738 | /* Check whether EVENT is a fork event, and if it is, remove the |
6739 | fork child from the context list passed in DATA. */ | |
6740 | ||
6741 | static int | |
6742 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6743 | QUEUE_ITER (stop_reply_p) *iter, | |
6744 | stop_reply_p event, | |
6745 | void *data) | |
6746 | { | |
19ba03f4 SM |
6747 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6748 | struct threads_listing_context *context | |
6749 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6750 | |
6751 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6752 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6753 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
21fe1c75 | 6754 | context->remove_thread (event->ws.value.related_pid); |
cbb8991c DB |
6755 | |
6756 | return 1; | |
6757 | } | |
6758 | ||
6759 | /* If CONTEXT contains any fork child threads that have not been | |
6760 | reported yet, remove them from the CONTEXT list. If such a | |
6761 | thread exists it is because we are stopped at a fork catchpoint | |
6762 | and have not yet called follow_fork, which will set up the | |
6763 | host-side data structures for the new process. */ | |
6764 | ||
6765 | static void | |
6766 | remove_new_fork_children (struct threads_listing_context *context) | |
6767 | { | |
6768 | struct thread_info * thread; | |
6769 | int pid = -1; | |
6770 | struct notif_client *notif = ¬if_client_stop; | |
6771 | struct queue_iter_param param; | |
6772 | ||
6773 | /* For any threads stopped at a fork event, remove the corresponding | |
6774 | fork child threads from the CONTEXT list. */ | |
6775 | ALL_NON_EXITED_THREADS (thread) | |
6776 | { | |
85ad3aaf | 6777 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6778 | |
6779 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 6780 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
6781 | } |
6782 | ||
6783 | /* Check for any pending fork events (not reported or processed yet) | |
6784 | in process PID and remove those fork child threads from the | |
6785 | CONTEXT list as well. */ | |
6786 | remote_notif_get_pending_events (notif); | |
6787 | param.input = context; | |
6788 | param.output = NULL; | |
6789 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6790 | remove_child_of_pending_fork, ¶m); | |
6791 | } | |
6792 | ||
85ad3aaf PA |
6793 | /* Check whether EVENT would prevent a global or process wildcard |
6794 | vCont action. */ | |
6795 | ||
6796 | static int | |
6797 | check_pending_event_prevents_wildcard_vcont_callback | |
6798 | (QUEUE (stop_reply_p) *q, | |
6799 | QUEUE_ITER (stop_reply_p) *iter, | |
6800 | stop_reply_p event, | |
6801 | void *data) | |
6802 | { | |
6803 | struct inferior *inf; | |
6804 | int *may_global_wildcard_vcont = (int *) data; | |
6805 | ||
6806 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6807 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6808 | return 1; | |
6809 | ||
6810 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6811 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6812 | *may_global_wildcard_vcont = 0; | |
6813 | ||
6814 | inf = find_inferior_ptid (event->ptid); | |
6815 | ||
6816 | /* This may be the first time we heard about this process. | |
6817 | Regardless, we must not do a global wildcard resume, otherwise | |
6818 | we'd resume this process too. */ | |
6819 | *may_global_wildcard_vcont = 0; | |
6820 | if (inf != NULL) | |
089354bb | 6821 | get_remote_inferior (inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6822 | |
6823 | return 1; | |
6824 | } | |
6825 | ||
6826 | /* Check whether any event pending in the vStopped queue would prevent | |
6827 | a global or process wildcard vCont action. Clear | |
6828 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6829 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6830 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6831 | ||
6832 | static void | |
6833 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6834 | { | |
6835 | struct notif_client *notif = ¬if_client_stop; | |
6836 | ||
6837 | remote_notif_get_pending_events (notif); | |
6838 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6839 | check_pending_event_prevents_wildcard_vcont_callback, | |
6840 | may_global_wildcard); | |
6841 | } | |
6842 | ||
f48ff2a7 YQ |
6843 | /* Remove stop replies in the queue if its pid is equal to the given |
6844 | inferior's pid. */ | |
722247f1 YQ |
6845 | |
6846 | static int | |
f48ff2a7 YQ |
6847 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6848 | QUEUE_ITER (stop_reply_p) *iter, | |
6849 | stop_reply_p event, | |
6850 | void *data) | |
722247f1 | 6851 | { |
19ba03f4 SM |
6852 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6853 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6854 | |
f48ff2a7 | 6855 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6856 | { |
6857 | stop_reply_xfree (event); | |
6858 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6859 | } | |
6860 | ||
6861 | return 1; | |
6862 | } | |
6863 | ||
f48ff2a7 | 6864 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6865 | |
74531fed | 6866 | static void |
5f4cf0bb | 6867 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6868 | { |
722247f1 | 6869 | struct queue_iter_param param; |
f48ff2a7 YQ |
6870 | struct stop_reply *reply; |
6871 | struct remote_state *rs = get_remote_state (); | |
6872 | struct remote_notif_state *rns = rs->notif_state; | |
6873 | ||
6874 | /* This function can be notified when an inferior exists. When the | |
6875 | target is not remote, the notification state is NULL. */ | |
6876 | if (rs->remote_desc == NULL) | |
6877 | return; | |
6878 | ||
6879 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6880 | |
74531fed | 6881 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6882 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6883 | { |
722247f1 | 6884 | stop_reply_xfree (reply); |
f48ff2a7 | 6885 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6886 | } |
c906108c | 6887 | |
722247f1 YQ |
6888 | param.input = inf; |
6889 | param.output = NULL; | |
74531fed PA |
6890 | /* Discard the stop replies we have already pulled with |
6891 | vStopped. */ | |
722247f1 | 6892 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6893 | remove_stop_reply_for_inferior, ¶m); |
6894 | } | |
6895 | ||
bcc75809 YQ |
6896 | /* If its remote state is equal to the given remote state, |
6897 | remove EVENT from the stop reply queue. */ | |
6898 | ||
6899 | static int | |
6900 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6901 | QUEUE_ITER (stop_reply_p) *iter, | |
6902 | stop_reply_p event, | |
6903 | void *data) | |
6904 | { | |
19ba03f4 SM |
6905 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6906 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6907 | |
6908 | if (event->rs == rs) | |
6909 | { | |
6910 | stop_reply_xfree (event); | |
6911 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6912 | } | |
6913 | ||
6914 | return 1; | |
6915 | } | |
6916 | ||
6917 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6918 | |
6919 | static void | |
bcc75809 | 6920 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6921 | { |
6922 | struct queue_iter_param param; | |
6923 | ||
bcc75809 | 6924 | param.input = rs; |
f48ff2a7 YQ |
6925 | param.output = NULL; |
6926 | /* Discard the stop replies we have already pulled with | |
6927 | vStopped. */ | |
6928 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6929 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6930 | } |
74531fed | 6931 | |
722247f1 YQ |
6932 | /* A parameter to pass data in and out. */ |
6933 | ||
6934 | static int | |
6935 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6936 | QUEUE_ITER (stop_reply_p) *iter, | |
6937 | stop_reply_p event, | |
6938 | void *data) | |
6939 | { | |
19ba03f4 SM |
6940 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6941 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6942 | |
6943 | if (ptid_match (event->ptid, *ptid)) | |
6944 | { | |
6945 | param->output = event; | |
6946 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6947 | return 0; | |
c8e38a49 | 6948 | } |
722247f1 YQ |
6949 | |
6950 | return 1; | |
74531fed | 6951 | } |
43ff13b4 | 6952 | |
722247f1 YQ |
6953 | /* Remove the first reply in 'stop_reply_queue' which matches |
6954 | PTID. */ | |
2e9f7625 | 6955 | |
722247f1 YQ |
6956 | static struct stop_reply * |
6957 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6958 | { |
722247f1 YQ |
6959 | struct queue_iter_param param; |
6960 | ||
6961 | param.input = &ptid; | |
6962 | param.output = NULL; | |
6963 | ||
6964 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6965 | remote_notif_remove_once_on_match, ¶m); | |
6966 | if (notif_debug) | |
6967 | fprintf_unfiltered (gdb_stdlog, | |
6968 | "notif: discard queued event: 'Stop' in %s\n", | |
6969 | target_pid_to_str (ptid)); | |
a744cf53 | 6970 | |
722247f1 | 6971 | return param.output; |
74531fed | 6972 | } |
75c99385 | 6973 | |
74531fed PA |
6974 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6975 | remove it from the queue, and return it. Returns NULL if none is | |
6976 | found. If there are still queued events left to process, tell the | |
6977 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6978 | |
74531fed PA |
6979 | static struct stop_reply * |
6980 | queued_stop_reply (ptid_t ptid) | |
6981 | { | |
722247f1 | 6982 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6983 | |
722247f1 | 6984 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6985 | /* There's still at least an event left. */ |
6986 | mark_async_event_handler (remote_async_inferior_event_token); | |
6987 | ||
722247f1 | 6988 | return r; |
74531fed PA |
6989 | } |
6990 | ||
6991 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6992 | know that we now have at least one queued event left to pass to the | |
6993 | core side, tell the event loop to get back to target_wait soon. */ | |
6994 | ||
6995 | static void | |
6996 | push_stop_reply (struct stop_reply *new_event) | |
6997 | { | |
722247f1 | 6998 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6999 | |
722247f1 YQ |
7000 | if (notif_debug) |
7001 | fprintf_unfiltered (gdb_stdlog, | |
7002 | "notif: push 'Stop' %s to queue %d\n", | |
7003 | target_pid_to_str (new_event->ptid), | |
7004 | QUEUE_length (stop_reply_p, | |
7005 | stop_reply_queue)); | |
74531fed PA |
7006 | |
7007 | mark_async_event_handler (remote_async_inferior_event_token); | |
7008 | } | |
7009 | ||
722247f1 YQ |
7010 | static int |
7011 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
7012 | QUEUE_ITER (stop_reply_p) *iter, | |
7013 | struct stop_reply *event, | |
7014 | void *data) | |
7015 | { | |
19ba03f4 | 7016 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
7017 | |
7018 | return !(ptid_equal (*ptid, event->ptid) | |
7019 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
7020 | } | |
7021 | ||
74531fed PA |
7022 | /* Returns true if we have a stop reply for PTID. */ |
7023 | ||
7024 | static int | |
7025 | peek_stop_reply (ptid_t ptid) | |
7026 | { | |
722247f1 YQ |
7027 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
7028 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
7029 | } |
7030 | ||
26d56a93 SL |
7031 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7032 | starting with P and ending with PEND matches PREFIX. */ | |
7033 | ||
7034 | static int | |
7035 | strprefix (const char *p, const char *pend, const char *prefix) | |
7036 | { | |
7037 | for ( ; p < pend; p++, prefix++) | |
7038 | if (*p != *prefix) | |
7039 | return 0; | |
7040 | return *prefix == '\0'; | |
7041 | } | |
7042 | ||
74531fed PA |
7043 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7044 | result is stored in EVENT, or throws an error. */ | |
7045 | ||
7046 | static void | |
7047 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
7048 | { | |
5cd63fda | 7049 | remote_arch_state *rsa = NULL; |
74531fed | 7050 | ULONGEST addr; |
256642e8 | 7051 | const char *p; |
94585166 | 7052 | int skipregs = 0; |
74531fed PA |
7053 | |
7054 | event->ptid = null_ptid; | |
bcc75809 | 7055 | event->rs = get_remote_state (); |
74531fed PA |
7056 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7057 | event->ws.value.integer = 0; | |
f7e6eed5 | 7058 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 7059 | event->regcache = NULL; |
dc146f7c | 7060 | event->core = -1; |
74531fed PA |
7061 | |
7062 | switch (buf[0]) | |
7063 | { | |
7064 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7065 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7066 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7067 | ss = signal number | |
7068 | n... = register number | |
7069 | r... = register contents | |
7070 | */ | |
7071 | ||
7072 | p = &buf[3]; /* after Txx */ | |
7073 | while (*p) | |
7074 | { | |
256642e8 | 7075 | const char *p1; |
cea39f65 | 7076 | int fieldsize; |
43ff13b4 | 7077 | |
1f10ba14 PA |
7078 | p1 = strchr (p, ':'); |
7079 | if (p1 == NULL) | |
7080 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7081 | Packet: '%s'\n"), | |
7082 | p, buf); | |
7083 | if (p == p1) | |
7084 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7085 | Packet: '%s'\n"), | |
7086 | p, buf); | |
3c3bea1c | 7087 | |
1f10ba14 PA |
7088 | /* Some "registers" are actually extended stop information. |
7089 | Note if you're adding a new entry here: GDB 7.9 and | |
7090 | earlier assume that all register "numbers" that start | |
7091 | with an hex digit are real register numbers. Make sure | |
7092 | the server only sends such a packet if it knows the | |
7093 | client understands it. */ | |
c8e38a49 | 7094 | |
26d56a93 | 7095 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7096 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7097 | else if (strprefix (p, p1, "syscall_entry")) |
7098 | { | |
7099 | ULONGEST sysno; | |
7100 | ||
7101 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7102 | p = unpack_varlen_hex (++p1, &sysno); | |
7103 | event->ws.value.syscall_number = (int) sysno; | |
7104 | } | |
7105 | else if (strprefix (p, p1, "syscall_return")) | |
7106 | { | |
7107 | ULONGEST sysno; | |
7108 | ||
7109 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7110 | p = unpack_varlen_hex (++p1, &sysno); | |
7111 | event->ws.value.syscall_number = (int) sysno; | |
7112 | } | |
26d56a93 SL |
7113 | else if (strprefix (p, p1, "watch") |
7114 | || strprefix (p, p1, "rwatch") | |
7115 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7116 | { |
f7e6eed5 | 7117 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7118 | p = unpack_varlen_hex (++p1, &addr); |
7119 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7120 | } |
26d56a93 | 7121 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7122 | { |
7123 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7124 | ||
7125 | /* Make sure the stub doesn't forget to indicate support | |
7126 | with qSupported. */ | |
7127 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7128 | error (_("Unexpected swbreak stop reason")); | |
7129 | ||
7130 | /* The value part is documented as "must be empty", | |
7131 | though we ignore it, in case we ever decide to make | |
7132 | use of it in a backward compatible way. */ | |
8424cc97 | 7133 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7134 | } |
26d56a93 | 7135 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7136 | { |
7137 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7138 | ||
7139 | /* Make sure the stub doesn't forget to indicate support | |
7140 | with qSupported. */ | |
7141 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7142 | error (_("Unexpected hwbreak stop reason")); | |
7143 | ||
7144 | /* See above. */ | |
8424cc97 | 7145 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7146 | } |
26d56a93 | 7147 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7148 | { |
1f10ba14 | 7149 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7150 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7151 | } |
26d56a93 | 7152 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7153 | { |
7154 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7155 | /* p1 will indicate "begin" or "end", but it makes | |
7156 | no difference for now, so ignore it. */ | |
8424cc97 | 7157 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7158 | } |
26d56a93 | 7159 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7160 | { |
7161 | ULONGEST c; | |
a744cf53 | 7162 | |
1f10ba14 PA |
7163 | p = unpack_varlen_hex (++p1, &c); |
7164 | event->core = c; | |
cea39f65 | 7165 | } |
26d56a93 | 7166 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7167 | { |
7168 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7169 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7170 | } | |
26d56a93 | 7171 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7172 | { |
7173 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7174 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7175 | } | |
26d56a93 | 7176 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7177 | { |
7178 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7179 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7180 | } |
6ab24463 | 7181 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7182 | { |
7183 | ULONGEST ignored; | |
7184 | char pathname[PATH_MAX]; | |
7185 | int pathlen; | |
7186 | ||
7187 | /* Determine the length of the execd pathname. */ | |
7188 | p = unpack_varlen_hex (++p1, &ignored); | |
7189 | pathlen = (p - p1) / 2; | |
7190 | ||
7191 | /* Save the pathname for event reporting and for | |
7192 | the next run command. */ | |
7193 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
7194 | pathname[pathlen] = '\0'; | |
7195 | ||
7196 | /* This is freed during event handling. */ | |
7197 | event->ws.value.execd_pathname = xstrdup (pathname); | |
7198 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
7199 | ||
7200 | /* Skip the registers included in this packet, since | |
7201 | they may be for an architecture different from the | |
7202 | one used by the original program. */ | |
7203 | skipregs = 1; | |
7204 | } | |
65706a29 PA |
7205 | else if (strprefix (p, p1, "create")) |
7206 | { | |
7207 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7208 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7209 | } |
cea39f65 MS |
7210 | else |
7211 | { | |
1f10ba14 | 7212 | ULONGEST pnum; |
256642e8 | 7213 | const char *p_temp; |
1f10ba14 | 7214 | |
94585166 DB |
7215 | if (skipregs) |
7216 | { | |
8424cc97 | 7217 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7218 | p++; |
7219 | continue; | |
7220 | } | |
7221 | ||
1f10ba14 PA |
7222 | /* Maybe a real ``P'' register number. */ |
7223 | p_temp = unpack_varlen_hex (p, &pnum); | |
7224 | /* If the first invalid character is the colon, we got a | |
7225 | register number. Otherwise, it's an unknown stop | |
7226 | reason. */ | |
7227 | if (p_temp == p1) | |
7228 | { | |
5cd63fda PA |
7229 | /* If we haven't parsed the event's thread yet, find |
7230 | it now, in order to find the architecture of the | |
7231 | reported expedited registers. */ | |
7232 | if (event->ptid == null_ptid) | |
7233 | { | |
7234 | const char *thr = strstr (p1 + 1, ";thread:"); | |
7235 | if (thr != NULL) | |
7236 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7237 | NULL); | |
7238 | else | |
3cada740 PA |
7239 | { |
7240 | /* Either the current thread hasn't changed, | |
7241 | or the inferior is not multi-threaded. | |
7242 | The event must be for the thread we last | |
7243 | set as (or learned as being) current. */ | |
7244 | event->ptid = event->rs->general_thread; | |
7245 | } | |
5cd63fda PA |
7246 | } |
7247 | ||
7248 | if (rsa == NULL) | |
7249 | { | |
7250 | inferior *inf = (event->ptid == null_ptid | |
7251 | ? NULL | |
7252 | : find_inferior_ptid (event->ptid)); | |
7253 | /* If this is the first time we learn anything | |
7254 | about this process, skip the registers | |
7255 | included in this packet, since we don't yet | |
7256 | know which architecture to use to parse them. | |
7257 | We'll determine the architecture later when | |
7258 | we process the stop reply and retrieve the | |
7259 | target description, via | |
7260 | remote_notice_new_inferior -> | |
7261 | post_create_inferior. */ | |
7262 | if (inf == NULL) | |
7263 | { | |
7264 | p = strchrnul (p1 + 1, ';'); | |
7265 | p++; | |
7266 | continue; | |
7267 | } | |
7268 | ||
7269 | event->arch = inf->gdbarch; | |
9d6eea31 | 7270 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7271 | } |
7272 | ||
7273 | packet_reg *reg | |
7274 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7275 | cached_reg_t cached_reg; |
43ff13b4 | 7276 | |
1f10ba14 PA |
7277 | if (reg == NULL) |
7278 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7279 | Packet: '%s'\n"), |
1f10ba14 | 7280 | hex_string (pnum), p, buf); |
c8e38a49 | 7281 | |
1f10ba14 | 7282 | cached_reg.num = reg->regnum; |
d1dff226 | 7283 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7284 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7285 | |
1f10ba14 PA |
7286 | p = p1 + 1; |
7287 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7288 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7289 | p += 2 * fieldsize; |
5cd63fda | 7290 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7291 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7292 | |
1f10ba14 PA |
7293 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
7294 | } | |
7295 | else | |
7296 | { | |
7297 | /* Not a number. Silently skip unknown optional | |
7298 | info. */ | |
8424cc97 | 7299 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7300 | } |
cea39f65 | 7301 | } |
c8e38a49 | 7302 | |
cea39f65 MS |
7303 | if (*p != ';') |
7304 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7305 | buf, p); | |
7306 | ++p; | |
7307 | } | |
5b5596ff PA |
7308 | |
7309 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7310 | break; | |
7311 | ||
c8e38a49 PA |
7312 | /* fall through */ |
7313 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7314 | { |
7315 | int sig; | |
7316 | ||
7317 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7318 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7319 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7320 | event->ws.value.sig = (enum gdb_signal) sig; | |
7321 | else | |
7322 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7323 | } | |
c8e38a49 | 7324 | break; |
65706a29 PA |
7325 | case 'w': /* Thread exited. */ |
7326 | { | |
256642e8 | 7327 | const char *p; |
65706a29 PA |
7328 | ULONGEST value; |
7329 | ||
7330 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7331 | p = unpack_varlen_hex (&buf[1], &value); | |
7332 | event->ws.value.integer = value; | |
7333 | if (*p != ';') | |
7334 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7335 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7336 | break; |
7337 | } | |
c8e38a49 PA |
7338 | case 'W': /* Target exited. */ |
7339 | case 'X': | |
7340 | { | |
256642e8 | 7341 | const char *p; |
c8e38a49 PA |
7342 | int pid; |
7343 | ULONGEST value; | |
82f73884 | 7344 | |
c8e38a49 PA |
7345 | /* GDB used to accept only 2 hex chars here. Stubs should |
7346 | only send more if they detect GDB supports multi-process | |
7347 | support. */ | |
7348 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7349 | |
c8e38a49 PA |
7350 | if (buf[0] == 'W') |
7351 | { | |
7352 | /* The remote process exited. */ | |
74531fed PA |
7353 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7354 | event->ws.value.integer = value; | |
c8e38a49 PA |
7355 | } |
7356 | else | |
7357 | { | |
7358 | /* The remote process exited with a signal. */ | |
74531fed | 7359 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7360 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7361 | event->ws.value.sig = (enum gdb_signal) value; | |
7362 | else | |
7363 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7364 | } |
82f73884 | 7365 | |
c8e38a49 PA |
7366 | /* If no process is specified, assume inferior_ptid. */ |
7367 | pid = ptid_get_pid (inferior_ptid); | |
7368 | if (*p == '\0') | |
7369 | ; | |
7370 | else if (*p == ';') | |
7371 | { | |
7372 | p++; | |
7373 | ||
0b24eb2d | 7374 | if (*p == '\0') |
82f73884 | 7375 | ; |
61012eef | 7376 | else if (startswith (p, "process:")) |
82f73884 | 7377 | { |
c8e38a49 | 7378 | ULONGEST upid; |
a744cf53 | 7379 | |
c8e38a49 PA |
7380 | p += sizeof ("process:") - 1; |
7381 | unpack_varlen_hex (p, &upid); | |
7382 | pid = upid; | |
82f73884 PA |
7383 | } |
7384 | else | |
7385 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7386 | } |
c8e38a49 PA |
7387 | else |
7388 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7389 | event->ptid = pid_to_ptid (pid); |
7390 | } | |
7391 | break; | |
f2faf941 PA |
7392 | case 'N': |
7393 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7394 | event->ptid = minus_one_ptid; | |
7395 | break; | |
74531fed PA |
7396 | } |
7397 | ||
6efcd9a8 | 7398 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7399 | error (_("No process or thread specified in stop reply: %s"), buf); |
7400 | } | |
7401 | ||
722247f1 YQ |
7402 | /* When the stub wants to tell GDB about a new notification reply, it |
7403 | sends a notification (%Stop, for example). Those can come it at | |
7404 | any time, hence, we have to make sure that any pending | |
7405 | putpkt/getpkt sequence we're making is finished, before querying | |
7406 | the stub for more events with the corresponding ack command | |
7407 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7408 | immediately upon receiving the notification, something like this | |
7409 | could happen: | |
74531fed PA |
7410 | |
7411 | 1.1) --> Hg 1 | |
7412 | 1.2) <-- OK | |
7413 | 1.3) --> g | |
7414 | 1.4) <-- %Stop | |
7415 | 1.5) --> vStopped | |
7416 | 1.6) <-- (registers reply to step #1.3) | |
7417 | ||
7418 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7419 | query. | |
7420 | ||
796cb314 | 7421 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7422 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7423 | doing whatever we were doing: | |
7424 | ||
7425 | 2.1) --> Hg 1 | |
7426 | 2.2) <-- OK | |
7427 | 2.3) --> g | |
7428 | 2.4) <-- %Stop | |
7429 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7430 | 2.5) <-- (registers reply to step #2.3) | |
7431 | ||
7432 | Eventualy after step #2.5, we return to the event loop, which | |
7433 | notices there's an event on the | |
7434 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7435 | associated callback --- the function below. At this point, we're | |
7436 | always safe to start a vStopped sequence. : | |
7437 | ||
7438 | 2.6) --> vStopped | |
7439 | 2.7) <-- T05 thread:2 | |
7440 | 2.8) --> vStopped | |
7441 | 2.9) --> OK | |
7442 | */ | |
7443 | ||
722247f1 YQ |
7444 | void |
7445 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7446 | { |
7447 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7448 | |
f48ff2a7 | 7449 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7450 | { |
722247f1 YQ |
7451 | if (notif_debug) |
7452 | fprintf_unfiltered (gdb_stdlog, | |
7453 | "notif: process: '%s' ack pending event\n", | |
7454 | nc->name); | |
74531fed | 7455 | |
722247f1 | 7456 | /* acknowledge */ |
f48ff2a7 YQ |
7457 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7458 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7459 | |
7460 | while (1) | |
7461 | { | |
7462 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7463 | if (strcmp (rs->buf, "OK") == 0) | |
7464 | break; | |
7465 | else | |
722247f1 | 7466 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7467 | } |
7468 | } | |
722247f1 YQ |
7469 | else |
7470 | { | |
7471 | if (notif_debug) | |
7472 | fprintf_unfiltered (gdb_stdlog, | |
7473 | "notif: process: '%s' no pending reply\n", | |
7474 | nc->name); | |
7475 | } | |
74531fed PA |
7476 | } |
7477 | ||
74531fed PA |
7478 | /* Called when it is decided that STOP_REPLY holds the info of the |
7479 | event that is to be returned to the core. This function always | |
7480 | destroys STOP_REPLY. */ | |
7481 | ||
7482 | static ptid_t | |
7483 | process_stop_reply (struct stop_reply *stop_reply, | |
7484 | struct target_waitstatus *status) | |
7485 | { | |
7486 | ptid_t ptid; | |
7487 | ||
7488 | *status = stop_reply->ws; | |
7489 | ptid = stop_reply->ptid; | |
7490 | ||
7491 | /* If no thread/process was reported by the stub, assume the current | |
7492 | inferior. */ | |
7493 | if (ptid_equal (ptid, null_ptid)) | |
7494 | ptid = inferior_ptid; | |
7495 | ||
5f3563ea | 7496 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7497 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7498 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7499 | { |
5f3563ea PA |
7500 | /* Expedited registers. */ |
7501 | if (stop_reply->regcache) | |
7502 | { | |
217f1f79 | 7503 | struct regcache *regcache |
5cd63fda | 7504 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea PA |
7505 | cached_reg_t *reg; |
7506 | int ix; | |
7507 | ||
7508 | for (ix = 0; | |
d1dff226 | 7509 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7510 | ix++) |
d1dff226 | 7511 | { |
217f1f79 | 7512 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7513 | xfree (reg->data); |
7514 | } | |
7515 | ||
5f3563ea PA |
7516 | VEC_free (cached_reg_t, stop_reply->regcache); |
7517 | } | |
74531fed | 7518 | |
1941c569 | 7519 | remote_notice_new_inferior (ptid, 0); |
7aabaf9d | 7520 | remote_thread_info *remote_thr = get_remote_thread_info (ptid); |
799a2abe PA |
7521 | remote_thr->core = stop_reply->core; |
7522 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7523 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7524 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7525 | } |
7526 | ||
74531fed PA |
7527 | stop_reply_xfree (stop_reply); |
7528 | return ptid; | |
7529 | } | |
7530 | ||
7531 | /* The non-stop mode version of target_wait. */ | |
7532 | ||
7533 | static ptid_t | |
47608cb1 | 7534 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7535 | { |
7536 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7537 | struct stop_reply *stop_reply; |
7538 | int ret; | |
fee9eda9 | 7539 | int is_notif = 0; |
74531fed PA |
7540 | |
7541 | /* If in non-stop mode, get out of getpkt even if a | |
7542 | notification is received. */ | |
7543 | ||
7544 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7545 | 0 /* forever */, &is_notif); |
74531fed PA |
7546 | while (1) |
7547 | { | |
fee9eda9 | 7548 | if (ret != -1 && !is_notif) |
74531fed PA |
7549 | switch (rs->buf[0]) |
7550 | { | |
7551 | case 'E': /* Error of some sort. */ | |
7552 | /* We're out of sync with the target now. Did it continue | |
7553 | or not? We can't tell which thread it was in non-stop, | |
7554 | so just ignore this. */ | |
7555 | warning (_("Remote failure reply: %s"), rs->buf); | |
7556 | break; | |
7557 | case 'O': /* Console output. */ | |
7558 | remote_console_output (rs->buf + 1); | |
7559 | break; | |
7560 | default: | |
7561 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7562 | break; | |
7563 | } | |
7564 | ||
7565 | /* Acknowledge a pending stop reply that may have arrived in the | |
7566 | mean time. */ | |
f48ff2a7 | 7567 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7568 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7569 | |
7570 | /* If indeed we noticed a stop reply, we're done. */ | |
7571 | stop_reply = queued_stop_reply (ptid); | |
7572 | if (stop_reply != NULL) | |
7573 | return process_stop_reply (stop_reply, status); | |
7574 | ||
47608cb1 | 7575 | /* Still no event. If we're just polling for an event, then |
74531fed | 7576 | return to the event loop. */ |
47608cb1 | 7577 | if (options & TARGET_WNOHANG) |
74531fed PA |
7578 | { |
7579 | status->kind = TARGET_WAITKIND_IGNORE; | |
7580 | return minus_one_ptid; | |
7581 | } | |
7582 | ||
47608cb1 | 7583 | /* Otherwise do a blocking wait. */ |
74531fed | 7584 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7585 | 1 /* forever */, &is_notif); |
74531fed PA |
7586 | } |
7587 | } | |
7588 | ||
7589 | /* Wait until the remote machine stops, then return, storing status in | |
7590 | STATUS just as `wait' would. */ | |
7591 | ||
7592 | static ptid_t | |
47608cb1 | 7593 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7594 | { |
7595 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7596 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7597 | char *buf; |
74531fed PA |
7598 | struct stop_reply *stop_reply; |
7599 | ||
47608cb1 PA |
7600 | again: |
7601 | ||
74531fed PA |
7602 | status->kind = TARGET_WAITKIND_IGNORE; |
7603 | status->value.integer = 0; | |
7604 | ||
7605 | stop_reply = queued_stop_reply (ptid); | |
7606 | if (stop_reply != NULL) | |
7607 | return process_stop_reply (stop_reply, status); | |
7608 | ||
7609 | if (rs->cached_wait_status) | |
7610 | /* Use the cached wait status, but only once. */ | |
7611 | rs->cached_wait_status = 0; | |
7612 | else | |
7613 | { | |
7614 | int ret; | |
722247f1 | 7615 | int is_notif; |
567420d1 PA |
7616 | int forever = ((options & TARGET_WNOHANG) == 0 |
7617 | && wait_forever_enabled_p); | |
7618 | ||
7619 | if (!rs->waiting_for_stop_reply) | |
7620 | { | |
7621 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7622 | return minus_one_ptid; | |
7623 | } | |
74531fed | 7624 | |
74531fed PA |
7625 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7626 | _never_ wait for ever -> test on target_is_async_p(). | |
7627 | However, before we do that we need to ensure that the caller | |
7628 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7629 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7630 | forever, &is_notif); |
722247f1 YQ |
7631 | |
7632 | /* GDB gets a notification. Return to core as this event is | |
7633 | not interesting. */ | |
7634 | if (ret != -1 && is_notif) | |
7635 | return minus_one_ptid; | |
567420d1 PA |
7636 | |
7637 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7638 | return minus_one_ptid; | |
74531fed PA |
7639 | } |
7640 | ||
7641 | buf = rs->buf; | |
7642 | ||
3a29589a DJ |
7643 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7644 | an 'F' or 'O' packet. */ | |
7645 | if (buf[0] != 'F' && buf[0] != 'O') | |
7646 | rs->ctrlc_pending_p = 0; | |
7647 | ||
74531fed PA |
7648 | switch (buf[0]) |
7649 | { | |
7650 | case 'E': /* Error of some sort. */ | |
7651 | /* We're out of sync with the target now. Did it continue or | |
7652 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7653 | rs->waiting_for_stop_reply = 0; |
7654 | ||
74531fed PA |
7655 | warning (_("Remote failure reply: %s"), buf); |
7656 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7657 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7658 | break; |
7659 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7660 | /* GDB may access the inferior memory while handling the File-I/O |
7661 | request, but we don't want GDB accessing memory while waiting | |
7662 | for a stop reply. See the comments in putpkt_binary. Set | |
7663 | waiting_for_stop_reply to 0 temporarily. */ | |
7664 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7665 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7666 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7667 | /* GDB handled the File-I/O request, and the target is running |
7668 | again. Keep waiting for events. */ | |
7669 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7670 | break; |
f2faf941 | 7671 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7672 | { |
29090fb6 LM |
7673 | struct stop_reply *stop_reply; |
7674 | ||
7675 | /* There is a stop reply to handle. */ | |
7676 | rs->waiting_for_stop_reply = 0; | |
7677 | ||
7678 | stop_reply | |
722247f1 YQ |
7679 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7680 | rs->buf); | |
74531fed | 7681 | |
74531fed | 7682 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7683 | break; |
7684 | } | |
7685 | case 'O': /* Console output. */ | |
7686 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7687 | break; |
7688 | case '\0': | |
b73be471 | 7689 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7690 | { |
7691 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7692 | remote system doesn't support it. */ | |
223ffa71 | 7693 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7694 | printf_filtered |
7695 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7696 | gdb_signal_to_name (rs->last_sent_signal)); |
7697 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7698 | target_terminal::inferior (); |
c8e38a49 | 7699 | |
f5c4fcd9 TT |
7700 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7701 | putpkt (buf); | |
c8e38a49 | 7702 | break; |
43ff13b4 | 7703 | } |
86a73007 | 7704 | /* fallthrough */ |
c8e38a49 PA |
7705 | default: |
7706 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7707 | break; |
43ff13b4 | 7708 | } |
c8e38a49 | 7709 | |
f2faf941 PA |
7710 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7711 | return minus_one_ptid; | |
7712 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7713 | { |
7714 | /* Nothing interesting happened. If we're doing a non-blocking | |
7715 | poll, we're done. Otherwise, go back to waiting. */ | |
7716 | if (options & TARGET_WNOHANG) | |
7717 | return minus_one_ptid; | |
7718 | else | |
7719 | goto again; | |
7720 | } | |
74531fed PA |
7721 | else if (status->kind != TARGET_WAITKIND_EXITED |
7722 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7723 | { |
7724 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7725 | record_currthread (rs, event_ptid); |
82f73884 PA |
7726 | else |
7727 | event_ptid = inferior_ptid; | |
43ff13b4 | 7728 | } |
74531fed PA |
7729 | else |
7730 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7731 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7732 | |
82f73884 | 7733 | return event_ptid; |
43ff13b4 JM |
7734 | } |
7735 | ||
74531fed PA |
7736 | /* Wait until the remote machine stops, then return, storing status in |
7737 | STATUS just as `wait' would. */ | |
7738 | ||
f6ac5f3d PA |
7739 | ptid_t |
7740 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, int options) | |
c8e38a49 PA |
7741 | { |
7742 | ptid_t event_ptid; | |
7743 | ||
6efcd9a8 | 7744 | if (target_is_non_stop_p ()) |
47608cb1 | 7745 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7746 | else |
47608cb1 | 7747 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7748 | |
d9d41e78 | 7749 | if (target_is_async_p ()) |
c8e38a49 | 7750 | { |
74531fed PA |
7751 | /* If there are are events left in the queue tell the event loop |
7752 | to return here. */ | |
722247f1 | 7753 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7754 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7755 | } |
c8e38a49 PA |
7756 | |
7757 | return event_ptid; | |
7758 | } | |
7759 | ||
74ca34ce | 7760 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7761 | |
b96ec7ac | 7762 | static int |
56be3814 | 7763 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7764 | { |
ac7936df | 7765 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7766 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7767 | char *buf, *p; |
9890e433 | 7768 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7769 | int i; |
7770 | ||
4082afcc | 7771 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7772 | return 0; |
7773 | ||
7774 | if (reg->pnum == -1) | |
7775 | return 0; | |
7776 | ||
2e9f7625 | 7777 | p = rs->buf; |
fcad0fa4 | 7778 | *p++ = 'p'; |
74ca34ce | 7779 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7780 | *p++ = '\0'; |
1f4437a4 MS |
7781 | putpkt (rs->buf); |
7782 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7783 | |
2e9f7625 DJ |
7784 | buf = rs->buf; |
7785 | ||
74ca34ce DJ |
7786 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7787 | { | |
7788 | case PACKET_OK: | |
7789 | break; | |
7790 | case PACKET_UNKNOWN: | |
7791 | return 0; | |
7792 | case PACKET_ERROR: | |
27a9c0bf | 7793 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7794 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7795 | reg->regnum), |
7796 | buf); | |
74ca34ce | 7797 | } |
3f9a994c JB |
7798 | |
7799 | /* If this register is unfetchable, tell the regcache. */ | |
7800 | if (buf[0] == 'x') | |
8480adf2 | 7801 | { |
56be3814 | 7802 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7803 | return 1; |
b96ec7ac | 7804 | } |
b96ec7ac | 7805 | |
3f9a994c JB |
7806 | /* Otherwise, parse and supply the value. */ |
7807 | p = buf; | |
7808 | i = 0; | |
7809 | while (p[0] != 0) | |
7810 | { | |
7811 | if (p[1] == 0) | |
74ca34ce | 7812 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7813 | |
7814 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7815 | p += 2; | |
7816 | } | |
56be3814 | 7817 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7818 | return 1; |
b96ec7ac AC |
7819 | } |
7820 | ||
74ca34ce DJ |
7821 | /* Fetch the registers included in the target's 'g' packet. */ |
7822 | ||
29709017 DJ |
7823 | static int |
7824 | send_g_packet (void) | |
c906108c | 7825 | { |
d01949b6 | 7826 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7827 | int buf_len; |
c906108c | 7828 | |
bba74b36 | 7829 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
b75abf5b AK |
7830 | putpkt (rs->buf); |
7831 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7832 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
7833 | error (_("Could not read registers; remote failure reply '%s'"), | |
7834 | rs->buf); | |
c906108c | 7835 | |
29709017 DJ |
7836 | /* We can get out of synch in various cases. If the first character |
7837 | in the buffer is not a hex character, assume that has happened | |
7838 | and try to fetch another packet to read. */ | |
7839 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7840 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7841 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7842 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7843 | { | |
7844 | if (remote_debug) | |
7845 | fprintf_unfiltered (gdb_stdlog, | |
7846 | "Bad register packet; fetching a new packet\n"); | |
7847 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7848 | } | |
7849 | ||
74ca34ce DJ |
7850 | buf_len = strlen (rs->buf); |
7851 | ||
7852 | /* Sanity check the received packet. */ | |
7853 | if (buf_len % 2 != 0) | |
7854 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7855 | |
7856 | return buf_len / 2; | |
7857 | } | |
7858 | ||
7859 | static void | |
56be3814 | 7860 | process_g_packet (struct regcache *regcache) |
29709017 | 7861 | { |
ac7936df | 7862 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 7863 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 7864 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
7865 | int i, buf_len; |
7866 | char *p; | |
7867 | char *regs; | |
7868 | ||
7869 | buf_len = strlen (rs->buf); | |
7870 | ||
7871 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 7872 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 SM |
7873 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
7874 | "bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf); | |
74ca34ce DJ |
7875 | |
7876 | /* Save the size of the packet sent to us by the target. It is used | |
7877 | as a heuristic when determining the max size of packets that the | |
7878 | target can safely receive. */ | |
7879 | if (rsa->actual_register_packet_size == 0) | |
7880 | rsa->actual_register_packet_size = buf_len; | |
7881 | ||
7882 | /* If this is smaller than we guessed the 'g' packet would be, | |
7883 | update our records. A 'g' reply that doesn't include a register's | |
7884 | value implies either that the register is not available, or that | |
7885 | the 'p' packet must be used. */ | |
7886 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7887 | { |
9dc193c3 | 7888 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7889 | |
4a22f64d | 7890 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7891 | { |
9dc193c3 LF |
7892 | long offset = rsa->regs[i].offset; |
7893 | long reg_size = register_size (gdbarch, i); | |
7894 | ||
74ca34ce DJ |
7895 | if (rsa->regs[i].pnum == -1) |
7896 | continue; | |
7897 | ||
9dc193c3 | 7898 | if (offset >= sizeof_g_packet) |
74ca34ce | 7899 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7900 | else if (offset + reg_size > sizeof_g_packet) |
7901 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7902 | else |
74ca34ce | 7903 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7904 | } |
9dc193c3 LF |
7905 | |
7906 | /* Looks valid enough, we can assume this is the correct length | |
7907 | for a 'g' packet. It's important not to adjust | |
7908 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7909 | this "if" won't be run the next time the method is called | |
7910 | with a packet of the same size and one of the internal errors | |
7911 | below will trigger instead. */ | |
7912 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7913 | } |
b323314b | 7914 | |
224c3ddb | 7915 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7916 | |
7917 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7918 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7919 | |
c906108c SS |
7920 | /* Reply describes registers byte by byte, each byte encoded as two |
7921 | hex characters. Suck them all up, then supply them to the | |
7922 | register cacheing/storage mechanism. */ | |
7923 | ||
74ca34ce | 7924 | p = rs->buf; |
ea9c271d | 7925 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7926 | { |
74ca34ce DJ |
7927 | if (p[0] == 0 || p[1] == 0) |
7928 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7929 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7930 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7931 | |
c906108c | 7932 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7933 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7934 | else |
7935 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7936 | p += 2; | |
7937 | } | |
7938 | ||
a744cf53 MS |
7939 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7940 | { | |
7941 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7942 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7943 | |
7944 | if (r->in_g_packet) | |
7945 | { | |
9dc193c3 | 7946 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7947 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7948 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7949 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7950 | else if (rs->buf[r->offset * 2] == 'x') |
7951 | { | |
7952 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7953 | /* The register isn't available, mark it as such (at | |
7954 | the same time setting the value to zero). */ | |
7955 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7956 | } | |
7957 | else | |
7958 | regcache_raw_supply (regcache, r->regnum, | |
7959 | regs + r->offset); | |
7960 | } | |
7961 | } | |
c906108c SS |
7962 | } |
7963 | ||
29709017 | 7964 | static void |
56be3814 | 7965 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7966 | { |
7967 | send_g_packet (); | |
56be3814 | 7968 | process_g_packet (regcache); |
29709017 DJ |
7969 | } |
7970 | ||
e6e4e701 PA |
7971 | /* Make the remote selected traceframe match GDB's selected |
7972 | traceframe. */ | |
7973 | ||
7974 | static void | |
7975 | set_remote_traceframe (void) | |
7976 | { | |
7977 | int newnum; | |
262e1174 | 7978 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7979 | |
262e1174 | 7980 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7981 | return; |
7982 | ||
7983 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7984 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7985 | |
7986 | newnum = target_trace_find (tfind_number, | |
7987 | get_traceframe_number (), 0, 0, NULL); | |
7988 | ||
7989 | /* Should not happen. If it does, all bets are off. */ | |
7990 | if (newnum != get_traceframe_number ()) | |
7991 | warning (_("could not set remote traceframe")); | |
7992 | } | |
7993 | ||
f6ac5f3d PA |
7994 | void |
7995 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 7996 | { |
ac7936df | 7997 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
7998 | struct remote_state *rs = get_remote_state (); |
7999 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8000 | int i; |
8001 | ||
e6e4e701 | 8002 | set_remote_traceframe (); |
bcc0c096 | 8003 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
8004 | |
8005 | if (regnum >= 0) | |
8006 | { | |
5cd63fda | 8007 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8008 | |
74ca34ce DJ |
8009 | gdb_assert (reg != NULL); |
8010 | ||
8011 | /* If this register might be in the 'g' packet, try that first - | |
8012 | we are likely to read more than one register. If this is the | |
8013 | first 'g' packet, we might be overly optimistic about its | |
8014 | contents, so fall back to 'p'. */ | |
8015 | if (reg->in_g_packet) | |
8016 | { | |
56be3814 | 8017 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8018 | if (reg->in_g_packet) |
8019 | return; | |
8020 | } | |
8021 | ||
56be3814 | 8022 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8023 | return; |
8024 | ||
8025 | /* This register is not available. */ | |
56be3814 | 8026 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
8027 | |
8028 | return; | |
8029 | } | |
8030 | ||
56be3814 | 8031 | fetch_registers_using_g (regcache); |
74ca34ce | 8032 | |
5cd63fda | 8033 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8034 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8035 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8036 | { |
8037 | /* This register is not available. */ | |
56be3814 | 8038 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
8039 | } |
8040 | } | |
8041 | ||
c906108c SS |
8042 | /* Prepare to store registers. Since we may send them all (using a |
8043 | 'G' request), we have to read out the ones we don't want to change | |
8044 | first. */ | |
8045 | ||
f6ac5f3d PA |
8046 | void |
8047 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8048 | { |
9d6eea31 PA |
8049 | struct remote_state *rs = get_remote_state (); |
8050 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8051 | int i; |
cf0e1e0d | 8052 | |
c906108c | 8053 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8054 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8055 | { |
8056 | case PACKET_DISABLE: | |
8057 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8058 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8059 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8060 | if (rsa->regs[i].in_g_packet) |
8e368124 | 8061 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
8062 | break; |
8063 | case PACKET_ENABLE: | |
8064 | break; | |
8065 | } | |
8066 | } | |
8067 | ||
ad10f812 | 8068 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8069 | packet was not recognized. */ |
5a2468f5 JM |
8070 | |
8071 | static int | |
1f4437a4 MS |
8072 | store_register_using_P (const struct regcache *regcache, |
8073 | struct packet_reg *reg) | |
5a2468f5 | 8074 | { |
ac7936df | 8075 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8076 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8077 | /* Try storing a single register. */ |
6d820c5c | 8078 | char *buf = rs->buf; |
9890e433 | 8079 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8080 | char *p; |
5a2468f5 | 8081 | |
4082afcc | 8082 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8083 | return 0; |
8084 | ||
8085 | if (reg->pnum == -1) | |
8086 | return 0; | |
8087 | ||
ea9c271d | 8088 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8089 | p = buf + strlen (buf); |
56be3814 | 8090 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 8091 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
8092 | putpkt (rs->buf); |
8093 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 8094 | |
74ca34ce DJ |
8095 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8096 | { | |
8097 | case PACKET_OK: | |
8098 | return 1; | |
8099 | case PACKET_ERROR: | |
27a9c0bf MS |
8100 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8101 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
8102 | case PACKET_UNKNOWN: |
8103 | return 0; | |
8104 | default: | |
8105 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8106 | } | |
c906108c SS |
8107 | } |
8108 | ||
23860348 MS |
8109 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8110 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
8111 | |
8112 | static void | |
56be3814 | 8113 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 8114 | { |
d01949b6 | 8115 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8116 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8117 | gdb_byte *regs; |
c906108c SS |
8118 | char *p; |
8119 | ||
193cb69f AC |
8120 | /* Extract all the registers in the regcache copying them into a |
8121 | local buffer. */ | |
8122 | { | |
b323314b | 8123 | int i; |
a744cf53 | 8124 | |
224c3ddb | 8125 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8126 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8127 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8128 | { |
ea9c271d | 8129 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8130 | |
b323314b | 8131 | if (r->in_g_packet) |
56be3814 | 8132 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
8133 | } |
8134 | } | |
c906108c SS |
8135 | |
8136 | /* Command describes registers byte by byte, | |
8137 | each byte encoded as two hex characters. */ | |
6d820c5c | 8138 | p = rs->buf; |
193cb69f | 8139 | *p++ = 'G'; |
74ca34ce | 8140 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
8141 | putpkt (rs->buf); |
8142 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8143 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
8144 | error (_("Could not write registers; remote failure reply '%s'"), |
8145 | rs->buf); | |
c906108c | 8146 | } |
74ca34ce DJ |
8147 | |
8148 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8149 | of the register cache buffer. FIXME: ignores errors. */ | |
8150 | ||
f6ac5f3d PA |
8151 | void |
8152 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8153 | { |
5cd63fda | 8154 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8155 | struct remote_state *rs = get_remote_state (); |
8156 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8157 | int i; |
8158 | ||
e6e4e701 | 8159 | set_remote_traceframe (); |
bcc0c096 | 8160 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
8161 | |
8162 | if (regnum >= 0) | |
8163 | { | |
5cd63fda | 8164 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8165 | |
74ca34ce DJ |
8166 | gdb_assert (reg != NULL); |
8167 | ||
8168 | /* Always prefer to store registers using the 'P' packet if | |
8169 | possible; we often change only a small number of registers. | |
8170 | Sometimes we change a larger number; we'd need help from a | |
8171 | higher layer to know to use 'G'. */ | |
56be3814 | 8172 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8173 | return; |
8174 | ||
8175 | /* For now, don't complain if we have no way to write the | |
8176 | register. GDB loses track of unavailable registers too | |
8177 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8178 | any way to read the register, either... */ |
74ca34ce DJ |
8179 | if (!reg->in_g_packet) |
8180 | return; | |
8181 | ||
56be3814 | 8182 | store_registers_using_G (regcache); |
74ca34ce DJ |
8183 | return; |
8184 | } | |
8185 | ||
56be3814 | 8186 | store_registers_using_G (regcache); |
74ca34ce | 8187 | |
5cd63fda | 8188 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8189 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8190 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8191 | /* See above for why we do not issue an error here. */ |
8192 | continue; | |
8193 | } | |
c906108c SS |
8194 | \f |
8195 | ||
8196 | /* Return the number of hex digits in num. */ | |
8197 | ||
8198 | static int | |
fba45db2 | 8199 | hexnumlen (ULONGEST num) |
c906108c SS |
8200 | { |
8201 | int i; | |
8202 | ||
8203 | for (i = 0; num != 0; i++) | |
8204 | num >>= 4; | |
8205 | ||
325fac50 | 8206 | return std::max (i, 1); |
c906108c SS |
8207 | } |
8208 | ||
2df3850c | 8209 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8210 | |
8211 | static int | |
fba45db2 | 8212 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8213 | { |
c906108c | 8214 | int len = hexnumlen (num); |
a744cf53 | 8215 | |
2df3850c JM |
8216 | return hexnumnstr (buf, num, len); |
8217 | } | |
8218 | ||
c906108c | 8219 | |
2df3850c | 8220 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8221 | |
2df3850c | 8222 | static int |
fba45db2 | 8223 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8224 | { |
8225 | int i; | |
8226 | ||
8227 | buf[width] = '\0'; | |
8228 | ||
8229 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8230 | { |
c5aa993b | 8231 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8232 | num >>= 4; |
8233 | } | |
8234 | ||
2df3850c | 8235 | return width; |
c906108c SS |
8236 | } |
8237 | ||
23860348 | 8238 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8239 | |
8240 | static CORE_ADDR | |
fba45db2 | 8241 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8242 | { |
883b9c6c | 8243 | unsigned int address_size = remote_address_size; |
a744cf53 | 8244 | |
911c95a5 UW |
8245 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8246 | if (!address_size) | |
f5656ead | 8247 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8248 | |
8249 | if (address_size > 0 | |
8250 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8251 | { |
8252 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8253 | in a ULONGEST variable. */ |
c906108c | 8254 | ULONGEST mask = 1; |
a744cf53 | 8255 | |
911c95a5 | 8256 | mask = (mask << address_size) - 1; |
c906108c SS |
8257 | addr &= mask; |
8258 | } | |
8259 | return addr; | |
8260 | } | |
8261 | ||
8262 | /* Determine whether the remote target supports binary downloading. | |
8263 | This is accomplished by sending a no-op memory write of zero length | |
8264 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8265 | the whole packet, since many stubs strip the eighth bit and |
8266 | subsequently compute a wrong checksum, which causes real havoc with | |
8267 | remote_write_bytes. | |
7a292a7a | 8268 | |
96baa820 | 8269 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8270 | clean. In cases like this, the user should clear "remote |
23860348 | 8271 | X-packet". */ |
96baa820 | 8272 | |
c906108c | 8273 | static void |
fba45db2 | 8274 | check_binary_download (CORE_ADDR addr) |
c906108c | 8275 | { |
d01949b6 | 8276 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8277 | |
4082afcc | 8278 | switch (packet_support (PACKET_X)) |
c906108c | 8279 | { |
96baa820 JM |
8280 | case PACKET_DISABLE: |
8281 | break; | |
8282 | case PACKET_ENABLE: | |
8283 | break; | |
8284 | case PACKET_SUPPORT_UNKNOWN: | |
8285 | { | |
96baa820 | 8286 | char *p; |
802188a7 | 8287 | |
2e9f7625 | 8288 | p = rs->buf; |
96baa820 JM |
8289 | *p++ = 'X'; |
8290 | p += hexnumstr (p, (ULONGEST) addr); | |
8291 | *p++ = ','; | |
8292 | p += hexnumstr (p, (ULONGEST) 0); | |
8293 | *p++ = ':'; | |
8294 | *p = '\0'; | |
802188a7 | 8295 | |
2e9f7625 | 8296 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8297 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8298 | |
2e9f7625 | 8299 | if (rs->buf[0] == '\0') |
96baa820 JM |
8300 | { |
8301 | if (remote_debug) | |
8302 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8303 | "binary downloading NOT " |
8304 | "supported by target\n"); | |
444abaca | 8305 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8306 | } |
8307 | else | |
8308 | { | |
8309 | if (remote_debug) | |
8310 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8311 | "binary downloading supported by target\n"); |
444abaca | 8312 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8313 | } |
8314 | break; | |
8315 | } | |
c906108c SS |
8316 | } |
8317 | } | |
8318 | ||
124e13d9 SM |
8319 | /* Helper function to resize the payload in order to try to get a good |
8320 | alignment. We try to write an amount of data such that the next write will | |
8321 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8322 | ||
8323 | static int | |
8324 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8325 | { | |
8326 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8327 | } | |
8328 | ||
c906108c SS |
8329 | /* Write memory data directly to the remote machine. |
8330 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8331 | HEADER is the starting part of the packet. |
c906108c SS |
8332 | MEMADDR is the address in the remote memory space. |
8333 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8334 | LEN_UNITS is the number of addressable units to write. |
8335 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8336 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8337 | should send data as binary ('X'), or hex-encoded ('M'). | |
8338 | ||
8339 | The function creates packet of the form | |
8340 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8341 | ||
124e13d9 | 8342 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8343 | |
8344 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8345 | are omitted. | |
8346 | ||
9b409511 | 8347 | Return the transferred status, error or OK (an |
124e13d9 SM |
8348 | 'enum target_xfer_status' value). Save the number of addressable units |
8349 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8350 | ||
8351 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8352 | exchange between gdb and the stub could look like (?? in place of the | |
8353 | checksum): | |
8354 | ||
8355 | -> $m1000,4#?? | |
8356 | <- aaaabbbbccccdddd | |
8357 | ||
8358 | -> $M1000,3:eeeeffffeeee#?? | |
8359 | <- OK | |
8360 | ||
8361 | -> $m1000,4#?? | |
8362 | <- eeeeffffeeeedddd */ | |
c906108c | 8363 | |
9b409511 | 8364 | static enum target_xfer_status |
a76d924d | 8365 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8366 | const gdb_byte *myaddr, ULONGEST len_units, |
8367 | int unit_size, ULONGEST *xfered_len_units, | |
8368 | char packet_format, int use_length) | |
c906108c | 8369 | { |
6d820c5c | 8370 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8371 | char *p; |
a76d924d DJ |
8372 | char *plen = NULL; |
8373 | int plenlen = 0; | |
124e13d9 SM |
8374 | int todo_units; |
8375 | int units_written; | |
8376 | int payload_capacity_bytes; | |
8377 | int payload_length_bytes; | |
a76d924d DJ |
8378 | |
8379 | if (packet_format != 'X' && packet_format != 'M') | |
8380 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8381 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8382 | |
124e13d9 | 8383 | if (len_units == 0) |
9b409511 | 8384 | return TARGET_XFER_EOF; |
b2182ed2 | 8385 | |
124e13d9 | 8386 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8387 | |
6d820c5c DJ |
8388 | /* The packet buffer will be large enough for the payload; |
8389 | get_memory_packet_size ensures this. */ | |
a76d924d | 8390 | rs->buf[0] = '\0'; |
c906108c | 8391 | |
a257b5bb | 8392 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8393 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8394 | ||
124e13d9 | 8395 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8396 | if (!use_length) |
0df8b418 | 8397 | /* The comma won't be used. */ |
124e13d9 SM |
8398 | payload_capacity_bytes += 1; |
8399 | payload_capacity_bytes -= strlen (header); | |
8400 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8401 | |
a76d924d | 8402 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8403 | |
a76d924d DJ |
8404 | strcat (rs->buf, header); |
8405 | p = rs->buf + strlen (header); | |
8406 | ||
8407 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8408 | if (packet_format == 'X') | |
c906108c | 8409 | { |
23860348 | 8410 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8411 | todo_units = std::min (len_units, |
8412 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8413 | if (use_length) |
124e13d9 | 8414 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8415 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8416 | } |
8417 | else | |
8418 | { | |
124e13d9 | 8419 | /* Number of bytes that will fit. */ |
325fac50 PA |
8420 | todo_units |
8421 | = std::min (len_units, | |
8422 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8423 | if (use_length) |
124e13d9 | 8424 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8425 | todo_units = std::min (todo_units, |
8426 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8427 | } |
a76d924d | 8428 | |
124e13d9 | 8429 | if (todo_units <= 0) |
3de11b2e | 8430 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8431 | _("minimum packet size too small to write data")); |
802188a7 | 8432 | |
6765f3e5 DJ |
8433 | /* If we already need another packet, then try to align the end |
8434 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8435 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8436 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8437 | |
a257b5bb | 8438 | /* Append "<memaddr>". */ |
917317f4 JM |
8439 | memaddr = remote_address_masked (memaddr); |
8440 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8441 | |
a76d924d DJ |
8442 | if (use_length) |
8443 | { | |
8444 | /* Append ",". */ | |
8445 | *p++ = ','; | |
802188a7 | 8446 | |
124e13d9 SM |
8447 | /* Append the length and retain its location and size. It may need to be |
8448 | adjusted once the packet body has been created. */ | |
a76d924d | 8449 | plen = p; |
124e13d9 | 8450 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8451 | p += plenlen; |
8452 | } | |
a257b5bb AC |
8453 | |
8454 | /* Append ":". */ | |
917317f4 JM |
8455 | *p++ = ':'; |
8456 | *p = '\0'; | |
802188a7 | 8457 | |
a257b5bb | 8458 | /* Append the packet body. */ |
a76d924d | 8459 | if (packet_format == 'X') |
917317f4 | 8460 | { |
917317f4 JM |
8461 | /* Binary mode. Send target system values byte by byte, in |
8462 | increasing byte addresses. Only escape certain critical | |
8463 | characters. */ | |
124e13d9 SM |
8464 | payload_length_bytes = |
8465 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8466 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8467 | |
124e13d9 | 8468 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8469 | a second try to keep the end of the packet aligned. Don't do |
8470 | this if the packet is tiny. */ | |
124e13d9 | 8471 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8472 | { |
124e13d9 SM |
8473 | int new_todo_units; |
8474 | ||
8475 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8476 | ||
8477 | if (new_todo_units != units_written) | |
8478 | payload_length_bytes = | |
8479 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8480 | (gdb_byte *) p, &units_written, | |
8481 | payload_capacity_bytes); | |
6765f3e5 DJ |
8482 | } |
8483 | ||
124e13d9 SM |
8484 | p += payload_length_bytes; |
8485 | if (use_length && units_written < todo_units) | |
c906108c | 8486 | { |
802188a7 | 8487 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8488 | and we have actually sent fewer units than planned. |
917317f4 JM |
8489 | Fix-up the length field of the packet. Use the same |
8490 | number of characters as before. */ | |
124e13d9 SM |
8491 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8492 | plenlen); | |
917317f4 | 8493 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8494 | } |
a76d924d DJ |
8495 | } |
8496 | else | |
8497 | { | |
917317f4 JM |
8498 | /* Normal mode: Send target system values byte by byte, in |
8499 | increasing byte addresses. Each byte is encoded as a two hex | |
8500 | value. */ | |
124e13d9 SM |
8501 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8502 | units_written = todo_units; | |
c906108c | 8503 | } |
802188a7 | 8504 | |
2e9f7625 | 8505 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8506 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8507 | |
2e9f7625 | 8508 | if (rs->buf[0] == 'E') |
00d84524 | 8509 | return TARGET_XFER_E_IO; |
802188a7 | 8510 | |
124e13d9 SM |
8511 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8512 | send fewer units than we'd planned. */ | |
8513 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8514 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8515 | } |
8516 | ||
a76d924d DJ |
8517 | /* Write memory data directly to the remote machine. |
8518 | This does not inform the data cache; the data cache uses this. | |
8519 | MEMADDR is the address in the remote memory space. | |
8520 | MYADDR is the address of the buffer in our space. | |
8521 | LEN is the number of bytes. | |
8522 | ||
9b409511 YQ |
8523 | Return the transferred status, error or OK (an |
8524 | 'enum target_xfer_status' value). Save the number of bytes | |
8525 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8526 | |
9b409511 YQ |
8527 | static enum target_xfer_status |
8528 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8529 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8530 | { |
a121b7c1 | 8531 | const char *packet_format = NULL; |
a76d924d DJ |
8532 | |
8533 | /* Check whether the target supports binary download. */ | |
8534 | check_binary_download (memaddr); | |
8535 | ||
4082afcc | 8536 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8537 | { |
8538 | case PACKET_ENABLE: | |
8539 | packet_format = "X"; | |
8540 | break; | |
8541 | case PACKET_DISABLE: | |
8542 | packet_format = "M"; | |
8543 | break; | |
8544 | case PACKET_SUPPORT_UNKNOWN: | |
8545 | internal_error (__FILE__, __LINE__, | |
8546 | _("remote_write_bytes: bad internal state")); | |
8547 | default: | |
8548 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8549 | } | |
8550 | ||
8551 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8552 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8553 | packet_format[0], 1); |
a76d924d DJ |
8554 | } |
8555 | ||
9217e74e YQ |
8556 | /* Read memory data directly from the remote machine. |
8557 | This does not use the data cache; the data cache uses this. | |
8558 | MEMADDR is the address in the remote memory space. | |
8559 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8560 | LEN_UNITS is the number of addressable memory units to read.. |
8561 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8562 | |
8563 | Return the transferred status, error or OK (an | |
8564 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8565 | transferred in *XFERED_LEN_UNITS. |
8566 | ||
8567 | See the comment of remote_write_bytes_aux for an example of | |
8568 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8569 | |
8570 | static enum target_xfer_status | |
124e13d9 SM |
8571 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8572 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8573 | { |
8574 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8575 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8576 | char *p; |
124e13d9 SM |
8577 | int todo_units; |
8578 | int decoded_bytes; | |
9217e74e | 8579 | |
124e13d9 | 8580 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8581 | /* The packet buffer will be large enough for the payload; |
8582 | get_memory_packet_size ensures this. */ | |
8583 | ||
124e13d9 | 8584 | /* Number of units that will fit. */ |
325fac50 PA |
8585 | todo_units = std::min (len_units, |
8586 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8587 | |
8588 | /* Construct "m"<memaddr>","<len>". */ | |
8589 | memaddr = remote_address_masked (memaddr); | |
8590 | p = rs->buf; | |
8591 | *p++ = 'm'; | |
8592 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8593 | *p++ = ','; | |
124e13d9 | 8594 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8595 | *p = '\0'; |
8596 | putpkt (rs->buf); | |
8597 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8598 | if (rs->buf[0] == 'E' | |
8599 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8600 | && rs->buf[3] == '\0') | |
8601 | return TARGET_XFER_E_IO; | |
8602 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8603 | characters. */ | |
8604 | p = rs->buf; | |
124e13d9 | 8605 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8606 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8607 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8608 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8609 | } |
8610 | ||
b55fbac4 YQ |
8611 | /* Using the set of read-only target sections of remote, read live |
8612 | read-only memory. | |
8acf9577 YQ |
8613 | |
8614 | For interface/parameters/return description see target.h, | |
8615 | to_xfer_partial. */ | |
8616 | ||
8617 | static enum target_xfer_status | |
b55fbac4 YQ |
8618 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8619 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8620 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8621 | { |
8622 | struct target_section *secp; | |
8623 | struct target_section_table *table; | |
8624 | ||
8625 | secp = target_section_by_addr (ops, memaddr); | |
8626 | if (secp != NULL | |
8627 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8628 | secp->the_bfd_section) | |
8629 | & SEC_READONLY)) | |
8630 | { | |
8631 | struct target_section *p; | |
8632 | ULONGEST memend = memaddr + len; | |
8633 | ||
8634 | table = target_get_section_table (ops); | |
8635 | ||
8636 | for (p = table->sections; p < table->sections_end; p++) | |
8637 | { | |
8638 | if (memaddr >= p->addr) | |
8639 | { | |
8640 | if (memend <= p->endaddr) | |
8641 | { | |
8642 | /* Entire transfer is within this section. */ | |
124e13d9 | 8643 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8644 | xfered_len); |
8acf9577 YQ |
8645 | } |
8646 | else if (memaddr >= p->endaddr) | |
8647 | { | |
8648 | /* This section ends before the transfer starts. */ | |
8649 | continue; | |
8650 | } | |
8651 | else | |
8652 | { | |
8653 | /* This section overlaps the transfer. Just do half. */ | |
8654 | len = p->endaddr - memaddr; | |
124e13d9 | 8655 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8656 | xfered_len); |
8acf9577 YQ |
8657 | } |
8658 | } | |
8659 | } | |
8660 | } | |
8661 | ||
8662 | return TARGET_XFER_EOF; | |
8663 | } | |
8664 | ||
9217e74e YQ |
8665 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8666 | first if the requested memory is unavailable in traceframe. | |
8667 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8668 | |
9b409511 | 8669 | static enum target_xfer_status |
8acf9577 | 8670 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8671 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8672 | ULONGEST *xfered_len) | |
c906108c | 8673 | { |
6b6aa828 | 8674 | if (len == 0) |
96c4f946 | 8675 | return TARGET_XFER_EOF; |
b2182ed2 | 8676 | |
8acf9577 YQ |
8677 | if (get_traceframe_number () != -1) |
8678 | { | |
a79b1bc6 | 8679 | std::vector<mem_range> available; |
8acf9577 YQ |
8680 | |
8681 | /* If we fail to get the set of available memory, then the | |
8682 | target does not support querying traceframe info, and so we | |
8683 | attempt reading from the traceframe anyway (assuming the | |
8684 | target implements the old QTro packet then). */ | |
8685 | if (traceframe_available_memory (&available, memaddr, len)) | |
8686 | { | |
a79b1bc6 | 8687 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8688 | { |
8689 | enum target_xfer_status res; | |
8690 | ||
8691 | /* Don't read into the traceframe's available | |
8692 | memory. */ | |
a79b1bc6 | 8693 | if (!available.empty ()) |
8acf9577 YQ |
8694 | { |
8695 | LONGEST oldlen = len; | |
8696 | ||
a79b1bc6 | 8697 | len = available[0].start - memaddr; |
8acf9577 YQ |
8698 | gdb_assert (len <= oldlen); |
8699 | } | |
8700 | ||
8acf9577 | 8701 | /* This goes through the topmost target again. */ |
b55fbac4 | 8702 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8703 | len, unit_size, xfered_len); |
8acf9577 YQ |
8704 | if (res == TARGET_XFER_OK) |
8705 | return TARGET_XFER_OK; | |
8706 | else | |
8707 | { | |
8708 | /* No use trying further, we know some memory starting | |
8709 | at MEMADDR isn't available. */ | |
8710 | *xfered_len = len; | |
92ffd475 PC |
8711 | return (*xfered_len != 0) ? |
8712 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8713 | } |
8714 | } | |
8715 | ||
8716 | /* Don't try to read more than how much is available, in | |
8717 | case the target implements the deprecated QTro packet to | |
8718 | cater for older GDBs (the target's knowledge of read-only | |
8719 | sections may be outdated by now). */ | |
a79b1bc6 | 8720 | len = available[0].length; |
8acf9577 YQ |
8721 | } |
8722 | } | |
8723 | ||
124e13d9 | 8724 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8725 | } |
74531fed | 8726 | |
c906108c | 8727 | \f |
c906108c | 8728 | |
a76d924d DJ |
8729 | /* Sends a packet with content determined by the printf format string |
8730 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8731 | whether the packet was a success, a failure, or unknown. */ | |
8732 | ||
77b64a49 PA |
8733 | static enum packet_result remote_send_printf (const char *format, ...) |
8734 | ATTRIBUTE_PRINTF (1, 2); | |
8735 | ||
2c0b251b | 8736 | static enum packet_result |
a76d924d DJ |
8737 | remote_send_printf (const char *format, ...) |
8738 | { | |
8739 | struct remote_state *rs = get_remote_state (); | |
8740 | int max_size = get_remote_packet_size (); | |
a76d924d | 8741 | va_list ap; |
a744cf53 | 8742 | |
a76d924d DJ |
8743 | va_start (ap, format); |
8744 | ||
8745 | rs->buf[0] = '\0'; | |
8746 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8747 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8748 | |
8749 | if (putpkt (rs->buf) < 0) | |
8750 | error (_("Communication problem with target.")); | |
8751 | ||
8752 | rs->buf[0] = '\0'; | |
8753 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8754 | ||
8755 | return packet_check_result (rs->buf); | |
8756 | } | |
8757 | ||
a76d924d DJ |
8758 | /* Flash writing can take quite some time. We'll set |
8759 | effectively infinite timeout for flash operations. | |
8760 | In future, we'll need to decide on a better approach. */ | |
8761 | static const int remote_flash_timeout = 1000; | |
8762 | ||
f6ac5f3d PA |
8763 | void |
8764 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 8765 | { |
f5656ead | 8766 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8767 | enum packet_result ret; |
2ec845e7 TT |
8768 | scoped_restore restore_timeout |
8769 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8770 | |
8771 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8772 | phex (address, addr_size), |
a76d924d DJ |
8773 | phex (length, 4)); |
8774 | switch (ret) | |
8775 | { | |
8776 | case PACKET_UNKNOWN: | |
8777 | error (_("Remote target does not support flash erase")); | |
8778 | case PACKET_ERROR: | |
8779 | error (_("Error erasing flash with vFlashErase packet")); | |
8780 | default: | |
8781 | break; | |
8782 | } | |
a76d924d DJ |
8783 | } |
8784 | ||
9b409511 YQ |
8785 | static enum target_xfer_status |
8786 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8787 | ULONGEST length, ULONGEST *xfered_len, | |
8788 | const gdb_byte *data) | |
a76d924d | 8789 | { |
2ec845e7 TT |
8790 | scoped_restore restore_timeout |
8791 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8792 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8793 | xfered_len,'X', 0); | |
a76d924d DJ |
8794 | } |
8795 | ||
f6ac5f3d PA |
8796 | void |
8797 | remote_target::flash_done () | |
a76d924d | 8798 | { |
a76d924d | 8799 | int ret; |
a76d924d | 8800 | |
2ec845e7 TT |
8801 | scoped_restore restore_timeout |
8802 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8803 | ||
a76d924d | 8804 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8805 | |
8806 | switch (ret) | |
8807 | { | |
8808 | case PACKET_UNKNOWN: | |
8809 | error (_("Remote target does not support vFlashDone")); | |
8810 | case PACKET_ERROR: | |
8811 | error (_("Error finishing flash operation")); | |
8812 | default: | |
8813 | break; | |
8814 | } | |
8815 | } | |
8816 | ||
f6ac5f3d PA |
8817 | void |
8818 | remote_target::files_info () | |
c906108c SS |
8819 | { |
8820 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8821 | } | |
8822 | \f | |
8823 | /* Stuff for dealing with the packets which are part of this protocol. | |
8824 | See comment at top of file for details. */ | |
8825 | ||
1927e618 PA |
8826 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8827 | error to higher layers. Called when a serial error is detected. | |
8828 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8829 | the system error message for errno at function entry and final dot |
8830 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8831 | |
8832 | static void | |
8833 | unpush_and_perror (const char *string) | |
8834 | { | |
d6cb50a2 | 8835 | int saved_errno = errno; |
1927e618 PA |
8836 | |
8837 | remote_unpush_target (); | |
d6cb50a2 JK |
8838 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8839 | safe_strerror (saved_errno)); | |
1927e618 PA |
8840 | } |
8841 | ||
048094ac PA |
8842 | /* Read a single character from the remote end. The current quit |
8843 | handler is overridden to avoid quitting in the middle of packet | |
8844 | sequence, as that would break communication with the remote server. | |
8845 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8846 | |
8847 | static int | |
fba45db2 | 8848 | readchar (int timeout) |
c906108c SS |
8849 | { |
8850 | int ch; | |
5d93a237 | 8851 | struct remote_state *rs = get_remote_state (); |
048094ac | 8852 | |
2ec845e7 TT |
8853 | { |
8854 | scoped_restore restore_quit | |
8855 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8856 | |
2ec845e7 | 8857 | rs->got_ctrlc_during_io = 0; |
c906108c | 8858 | |
2ec845e7 | 8859 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8860 | |
2ec845e7 TT |
8861 | if (rs->got_ctrlc_during_io) |
8862 | set_quit_flag (); | |
8863 | } | |
048094ac | 8864 | |
2acceee2 | 8865 | if (ch >= 0) |
0876f84a | 8866 | return ch; |
2acceee2 JM |
8867 | |
8868 | switch ((enum serial_rc) ch) | |
c906108c SS |
8869 | { |
8870 | case SERIAL_EOF: | |
78a095c3 | 8871 | remote_unpush_target (); |
598d3636 | 8872 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8873 | /* no return */ |
c906108c | 8874 | case SERIAL_ERROR: |
1927e618 PA |
8875 | unpush_and_perror (_("Remote communication error. " |
8876 | "Target disconnected.")); | |
2acceee2 | 8877 | /* no return */ |
c906108c | 8878 | case SERIAL_TIMEOUT: |
2acceee2 | 8879 | break; |
c906108c | 8880 | } |
2acceee2 | 8881 | return ch; |
c906108c SS |
8882 | } |
8883 | ||
c33e31fd | 8884 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8885 | writing fails. The current quit handler is overridden to avoid |
8886 | quitting in the middle of packet sequence, as that would break | |
8887 | communication with the remote server. See | |
8888 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8889 | |
8890 | static void | |
8891 | remote_serial_write (const char *str, int len) | |
8892 | { | |
5d93a237 | 8893 | struct remote_state *rs = get_remote_state (); |
048094ac | 8894 | |
2ec845e7 TT |
8895 | scoped_restore restore_quit |
8896 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8897 | |
8898 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8899 | |
8900 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8901 | { |
1927e618 PA |
8902 | unpush_and_perror (_("Remote communication error. " |
8903 | "Target disconnected.")); | |
c33e31fd | 8904 | } |
048094ac PA |
8905 | |
8906 | if (rs->got_ctrlc_during_io) | |
8907 | set_quit_flag (); | |
c33e31fd PA |
8908 | } |
8909 | ||
b3ced9ba PA |
8910 | /* Return a string representing an escaped version of BUF, of len N. |
8911 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8912 | |
b3ced9ba | 8913 | static std::string |
6e5abd65 PA |
8914 | escape_buffer (const char *buf, int n) |
8915 | { | |
d7e74731 | 8916 | string_file stb; |
6e5abd65 | 8917 | |
d7e74731 PA |
8918 | stb.putstrn (buf, n, '\\'); |
8919 | return std::move (stb.string ()); | |
6e5abd65 PA |
8920 | } |
8921 | ||
c906108c SS |
8922 | /* Display a null-terminated packet on stdout, for debugging, using C |
8923 | string notation. */ | |
8924 | ||
8925 | static void | |
baa336ce | 8926 | print_packet (const char *buf) |
c906108c SS |
8927 | { |
8928 | puts_filtered ("\""); | |
43e526b9 | 8929 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8930 | puts_filtered ("\""); |
8931 | } | |
8932 | ||
8933 | int | |
baa336ce | 8934 | putpkt (const char *buf) |
c906108c SS |
8935 | { |
8936 | return putpkt_binary (buf, strlen (buf)); | |
8937 | } | |
8938 | ||
8939 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8940 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8941 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8942 | and for a possible /0 if we are debugging (remote_debug) and want |
8943 | to print the sent packet as a string. */ | |
c906108c SS |
8944 | |
8945 | static int | |
baa336ce | 8946 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8947 | { |
2d717e4f | 8948 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8949 | int i; |
8950 | unsigned char csum = 0; | |
b80406ac TT |
8951 | gdb::def_vector<char> data (cnt + 6); |
8952 | char *buf2 = data.data (); | |
085dd6e6 | 8953 | |
c906108c SS |
8954 | int ch; |
8955 | int tcount = 0; | |
8956 | char *p; | |
8957 | ||
e24a49d8 PA |
8958 | /* Catch cases like trying to read memory or listing threads while |
8959 | we're waiting for a stop reply. The remote server wouldn't be | |
8960 | ready to handle this request, so we'd hang and timeout. We don't | |
8961 | have to worry about this in synchronous mode, because in that | |
8962 | case it's not possible to issue a command while the target is | |
74531fed PA |
8963 | running. This is not a problem in non-stop mode, because in that |
8964 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8965 | if (!target_is_non_stop_p () |
8966 | && target_is_async_p () | |
8967 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8968 | { |
8969 | error (_("Cannot execute this command while the target is running.\n" | |
8970 | "Use the \"interrupt\" command to stop the target\n" | |
8971 | "and then try again.")); | |
8972 | } | |
e24a49d8 | 8973 | |
2d717e4f DJ |
8974 | /* We're sending out a new packet. Make sure we don't look at a |
8975 | stale cached response. */ | |
8976 | rs->cached_wait_status = 0; | |
8977 | ||
c906108c SS |
8978 | /* Copy the packet into buffer BUF2, encapsulating it |
8979 | and giving it a checksum. */ | |
8980 | ||
c906108c SS |
8981 | p = buf2; |
8982 | *p++ = '$'; | |
8983 | ||
8984 | for (i = 0; i < cnt; i++) | |
8985 | { | |
8986 | csum += buf[i]; | |
8987 | *p++ = buf[i]; | |
8988 | } | |
8989 | *p++ = '#'; | |
8990 | *p++ = tohex ((csum >> 4) & 0xf); | |
8991 | *p++ = tohex (csum & 0xf); | |
8992 | ||
8993 | /* Send it over and over until we get a positive ack. */ | |
8994 | ||
8995 | while (1) | |
8996 | { | |
8997 | int started_error_output = 0; | |
8998 | ||
8999 | if (remote_debug) | |
9000 | { | |
9001 | *p = '\0'; | |
b3ced9ba | 9002 | |
6f8976bf YQ |
9003 | int len = (int) (p - buf2); |
9004 | ||
9005 | std::string str | |
9006 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
9007 | ||
9008 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9009 | ||
567a3e54 SM |
9010 | if (len > REMOTE_DEBUG_MAX_CHAR) |
9011 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9012 | len - REMOTE_DEBUG_MAX_CHAR); | |
6f8976bf YQ |
9013 | |
9014 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9015 | |
0f71a2f6 | 9016 | gdb_flush (gdb_stdlog); |
c906108c | 9017 | } |
c33e31fd | 9018 | remote_serial_write (buf2, p - buf2); |
c906108c | 9019 | |
a6f3e723 SL |
9020 | /* If this is a no acks version of the remote protocol, send the |
9021 | packet and move on. */ | |
9022 | if (rs->noack_mode) | |
9023 | break; | |
9024 | ||
74531fed PA |
9025 | /* Read until either a timeout occurs (-2) or '+' is read. |
9026 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9027 | while (1) |
9028 | { | |
9029 | ch = readchar (remote_timeout); | |
9030 | ||
c5aa993b | 9031 | if (remote_debug) |
c906108c SS |
9032 | { |
9033 | switch (ch) | |
9034 | { | |
9035 | case '+': | |
1216fa2c | 9036 | case '-': |
c906108c SS |
9037 | case SERIAL_TIMEOUT: |
9038 | case '$': | |
74531fed | 9039 | case '%': |
c906108c SS |
9040 | if (started_error_output) |
9041 | { | |
9042 | putchar_unfiltered ('\n'); | |
9043 | started_error_output = 0; | |
9044 | } | |
9045 | } | |
9046 | } | |
9047 | ||
9048 | switch (ch) | |
9049 | { | |
9050 | case '+': | |
9051 | if (remote_debug) | |
0f71a2f6 | 9052 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9053 | return 1; |
1216fa2c AC |
9054 | case '-': |
9055 | if (remote_debug) | |
9056 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9057 | /* FALLTHROUGH */ |
c906108c | 9058 | case SERIAL_TIMEOUT: |
c5aa993b | 9059 | tcount++; |
c906108c | 9060 | if (tcount > 3) |
b80406ac | 9061 | return 0; |
23860348 | 9062 | break; /* Retransmit buffer. */ |
c906108c SS |
9063 | case '$': |
9064 | { | |
40e3f985 | 9065 | if (remote_debug) |
2bc416ba | 9066 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9067 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9068 | /* It's probably an old response sent because an ACK |
9069 | was lost. Gobble up the packet and ack it so it | |
9070 | doesn't get retransmitted when we resend this | |
9071 | packet. */ | |
6d820c5c | 9072 | skip_frame (); |
c33e31fd | 9073 | remote_serial_write ("+", 1); |
23860348 | 9074 | continue; /* Now, go look for +. */ |
c906108c | 9075 | } |
74531fed PA |
9076 | |
9077 | case '%': | |
9078 | { | |
9079 | int val; | |
9080 | ||
9081 | /* If we got a notification, handle it, and go back to looking | |
9082 | for an ack. */ | |
9083 | /* We've found the start of a notification. Now | |
9084 | collect the data. */ | |
9085 | val = read_frame (&rs->buf, &rs->buf_size); | |
9086 | if (val >= 0) | |
9087 | { | |
9088 | if (remote_debug) | |
9089 | { | |
b3ced9ba | 9090 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 9091 | |
6e5abd65 PA |
9092 | fprintf_unfiltered (gdb_stdlog, |
9093 | " Notification received: %s\n", | |
b3ced9ba | 9094 | str.c_str ()); |
74531fed | 9095 | } |
5965e028 | 9096 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
9097 | /* We're in sync now, rewait for the ack. */ |
9098 | tcount = 0; | |
9099 | } | |
9100 | else | |
9101 | { | |
9102 | if (remote_debug) | |
9103 | { | |
9104 | if (!started_error_output) | |
9105 | { | |
9106 | started_error_output = 1; | |
9107 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9108 | } | |
9109 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
9110 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
9111 | } | |
9112 | } | |
9113 | continue; | |
9114 | } | |
9115 | /* fall-through */ | |
c906108c SS |
9116 | default: |
9117 | if (remote_debug) | |
9118 | { | |
9119 | if (!started_error_output) | |
9120 | { | |
9121 | started_error_output = 1; | |
0f71a2f6 | 9122 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9123 | } |
0f71a2f6 | 9124 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9125 | } |
9126 | continue; | |
9127 | } | |
23860348 | 9128 | break; /* Here to retransmit. */ |
c906108c SS |
9129 | } |
9130 | ||
9131 | #if 0 | |
9132 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
9133 | able to get out next time we call QUIT, without anything as |
9134 | violent as interrupt_query. If we want to provide a way out of | |
9135 | here without getting to the next QUIT, it should be based on | |
9136 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9137 | if (quit_flag) |
9138 | { | |
9139 | quit_flag = 0; | |
9140 | interrupt_query (); | |
9141 | } | |
9142 | #endif | |
9143 | } | |
a5c0808e | 9144 | |
a6f3e723 | 9145 | return 0; |
c906108c SS |
9146 | } |
9147 | ||
6d820c5c DJ |
9148 | /* Come here after finding the start of a frame when we expected an |
9149 | ack. Do our best to discard the rest of this packet. */ | |
9150 | ||
9151 | static void | |
9152 | skip_frame (void) | |
9153 | { | |
9154 | int c; | |
9155 | ||
9156 | while (1) | |
9157 | { | |
9158 | c = readchar (remote_timeout); | |
9159 | switch (c) | |
9160 | { | |
9161 | case SERIAL_TIMEOUT: | |
9162 | /* Nothing we can do. */ | |
9163 | return; | |
9164 | case '#': | |
9165 | /* Discard the two bytes of checksum and stop. */ | |
9166 | c = readchar (remote_timeout); | |
9167 | if (c >= 0) | |
9168 | c = readchar (remote_timeout); | |
9169 | ||
9170 | return; | |
9171 | case '*': /* Run length encoding. */ | |
9172 | /* Discard the repeat count. */ | |
9173 | c = readchar (remote_timeout); | |
9174 | if (c < 0) | |
9175 | return; | |
9176 | break; | |
9177 | default: | |
9178 | /* A regular character. */ | |
9179 | break; | |
9180 | } | |
9181 | } | |
9182 | } | |
9183 | ||
c906108c | 9184 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9185 | into *BUF, verifying the checksum, length, and handling run-length |
9186 | compression. NUL terminate the buffer. If there is not enough room, | |
9187 | expand *BUF using xrealloc. | |
c906108c | 9188 | |
c2d11a7d JM |
9189 | Returns -1 on error, number of characters in buffer (ignoring the |
9190 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9191 | SERIAL status indications). */ |
c2d11a7d JM |
9192 | |
9193 | static long | |
6d820c5c DJ |
9194 | read_frame (char **buf_p, |
9195 | long *sizeof_buf) | |
c906108c SS |
9196 | { |
9197 | unsigned char csum; | |
c2d11a7d | 9198 | long bc; |
c906108c | 9199 | int c; |
6d820c5c | 9200 | char *buf = *buf_p; |
a6f3e723 | 9201 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9202 | |
9203 | csum = 0; | |
c2d11a7d | 9204 | bc = 0; |
c906108c SS |
9205 | |
9206 | while (1) | |
9207 | { | |
9208 | c = readchar (remote_timeout); | |
c906108c SS |
9209 | switch (c) |
9210 | { | |
9211 | case SERIAL_TIMEOUT: | |
9212 | if (remote_debug) | |
0f71a2f6 | 9213 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9214 | return -1; |
c906108c SS |
9215 | case '$': |
9216 | if (remote_debug) | |
0f71a2f6 JM |
9217 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9218 | gdb_stdlog); | |
23860348 | 9219 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9220 | case '#': |
9221 | { | |
9222 | unsigned char pktcsum; | |
e1b09194 AC |
9223 | int check_0 = 0; |
9224 | int check_1 = 0; | |
c906108c | 9225 | |
c2d11a7d | 9226 | buf[bc] = '\0'; |
c906108c | 9227 | |
e1b09194 AC |
9228 | check_0 = readchar (remote_timeout); |
9229 | if (check_0 >= 0) | |
9230 | check_1 = readchar (remote_timeout); | |
802188a7 | 9231 | |
e1b09194 AC |
9232 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9233 | { | |
9234 | if (remote_debug) | |
2bc416ba | 9235 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9236 | gdb_stdlog); |
e1b09194 AC |
9237 | return -1; |
9238 | } | |
9239 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9240 | { |
9241 | if (remote_debug) | |
2bc416ba | 9242 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9243 | gdb_stdlog); |
40e3f985 FN |
9244 | return -1; |
9245 | } | |
c906108c | 9246 | |
a6f3e723 SL |
9247 | /* Don't recompute the checksum; with no ack packets we |
9248 | don't have any way to indicate a packet retransmission | |
9249 | is necessary. */ | |
9250 | if (rs->noack_mode) | |
9251 | return bc; | |
9252 | ||
e1b09194 | 9253 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9254 | if (csum == pktcsum) |
c2d11a7d | 9255 | return bc; |
c906108c | 9256 | |
c5aa993b | 9257 | if (remote_debug) |
c906108c | 9258 | { |
b3ced9ba | 9259 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9260 | |
6e5abd65 | 9261 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9262 | "Bad checksum, sentsum=0x%x, " |
9263 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9264 | pktcsum, csum, str.c_str ()); |
c906108c | 9265 | } |
c2d11a7d | 9266 | /* Number of characters in buffer ignoring trailing |
23860348 | 9267 | NULL. */ |
c2d11a7d | 9268 | return -1; |
c906108c | 9269 | } |
23860348 | 9270 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9271 | { |
9272 | int repeat; | |
c906108c | 9273 | |
a744cf53 | 9274 | csum += c; |
b4501125 AC |
9275 | c = readchar (remote_timeout); |
9276 | csum += c; | |
23860348 | 9277 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9278 | |
23860348 | 9279 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9280 | |
6d820c5c | 9281 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9282 | { |
6d820c5c DJ |
9283 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
9284 | { | |
9285 | /* Make some more room in the buffer. */ | |
9286 | *sizeof_buf += repeat; | |
224c3ddb | 9287 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9288 | buf = *buf_p; |
9289 | } | |
9290 | ||
c2d11a7d JM |
9291 | memset (&buf[bc], buf[bc - 1], repeat); |
9292 | bc += repeat; | |
c2c6d25f JM |
9293 | continue; |
9294 | } | |
9295 | ||
c2d11a7d | 9296 | buf[bc] = '\0'; |
6d820c5c | 9297 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9298 | return -1; |
c2c6d25f | 9299 | } |
c906108c | 9300 | default: |
6d820c5c | 9301 | if (bc >= *sizeof_buf - 1) |
c906108c | 9302 | { |
6d820c5c DJ |
9303 | /* Make some more room in the buffer. */ |
9304 | *sizeof_buf *= 2; | |
224c3ddb | 9305 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9306 | buf = *buf_p; |
c906108c SS |
9307 | } |
9308 | ||
6d820c5c DJ |
9309 | buf[bc++] = c; |
9310 | csum += c; | |
9311 | continue; | |
c906108c SS |
9312 | } |
9313 | } | |
9314 | } | |
9315 | ||
9316 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9317 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9318 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9319 | rather than timing out; this is used (in synchronous mode) to wait | |
9320 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9321 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9322 | don't have to change all the calls to getpkt to deal with the | |
9323 | return value, because at the moment I don't know what the right | |
23860348 | 9324 | thing to do it for those. */ |
c906108c | 9325 | void |
6d820c5c DJ |
9326 | getpkt (char **buf, |
9327 | long *sizeof_buf, | |
c2d11a7d | 9328 | int forever) |
d9fcf2fb | 9329 | { |
54887903 | 9330 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9331 | } |
9332 | ||
9333 | ||
9334 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9335 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9336 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9337 | rather than timing out; this is used (in synchronous mode) to wait | |
9338 | for a target that is is executing user code to stop. If FOREVER == | |
9339 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9340 | indication of this to the caller. Otherwise return the number of |
9341 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9342 | enough reason to return to the caller. *IS_NOTIF is an output |
9343 | boolean that indicates whether *BUF holds a notification or not | |
9344 | (a regular packet). */ | |
74531fed | 9345 | |
3172dc30 | 9346 | static int |
74531fed | 9347 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9348 | int expecting_notif, int *is_notif) |
c906108c | 9349 | { |
2d717e4f | 9350 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9351 | int c; |
9352 | int tries; | |
9353 | int timeout; | |
df4b58fe | 9354 | int val = -1; |
c906108c | 9355 | |
2d717e4f DJ |
9356 | /* We're reading a new response. Make sure we don't look at a |
9357 | previously cached response. */ | |
9358 | rs->cached_wait_status = 0; | |
9359 | ||
6d820c5c | 9360 | strcpy (*buf, "timeout"); |
c906108c SS |
9361 | |
9362 | if (forever) | |
74531fed PA |
9363 | timeout = watchdog > 0 ? watchdog : -1; |
9364 | else if (expecting_notif) | |
9365 | timeout = 0; /* There should already be a char in the buffer. If | |
9366 | not, bail out. */ | |
c906108c SS |
9367 | else |
9368 | timeout = remote_timeout; | |
9369 | ||
9370 | #define MAX_TRIES 3 | |
9371 | ||
74531fed PA |
9372 | /* Process any number of notifications, and then return when |
9373 | we get a packet. */ | |
9374 | for (;;) | |
c906108c | 9375 | { |
d9c43928 | 9376 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9377 | times. */ |
9378 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9379 | { |
74531fed PA |
9380 | /* This can loop forever if the remote side sends us |
9381 | characters continuously, but if it pauses, we'll get | |
9382 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9383 | we'll count that as a retry. | |
9384 | ||
9385 | Note that even when forever is set, we will only wait | |
9386 | forever prior to the start of a packet. After that, we | |
9387 | expect characters to arrive at a brisk pace. They should | |
9388 | show up within remote_timeout intervals. */ | |
9389 | do | |
9390 | c = readchar (timeout); | |
9391 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9392 | |
9393 | if (c == SERIAL_TIMEOUT) | |
9394 | { | |
74531fed PA |
9395 | if (expecting_notif) |
9396 | return -1; /* Don't complain, it's normal to not get | |
9397 | anything in this case. */ | |
9398 | ||
23860348 | 9399 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9400 | { |
78a095c3 | 9401 | remote_unpush_target (); |
598d3636 JK |
9402 | throw_error (TARGET_CLOSE_ERROR, |
9403 | _("Watchdog timeout has expired. " | |
9404 | "Target detached.")); | |
c906108c | 9405 | } |
c906108c | 9406 | if (remote_debug) |
0f71a2f6 | 9407 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9408 | } |
74531fed PA |
9409 | else |
9410 | { | |
9411 | /* We've found the start of a packet or notification. | |
9412 | Now collect the data. */ | |
9413 | val = read_frame (buf, sizeof_buf); | |
9414 | if (val >= 0) | |
9415 | break; | |
9416 | } | |
9417 | ||
c33e31fd | 9418 | remote_serial_write ("-", 1); |
c906108c | 9419 | } |
c906108c | 9420 | |
74531fed PA |
9421 | if (tries > MAX_TRIES) |
9422 | { | |
9423 | /* We have tried hard enough, and just can't receive the | |
9424 | packet/notification. Give up. */ | |
9425 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9426 | |
74531fed PA |
9427 | /* Skip the ack char if we're in no-ack mode. */ |
9428 | if (!rs->noack_mode) | |
c33e31fd | 9429 | remote_serial_write ("+", 1); |
74531fed PA |
9430 | return -1; |
9431 | } | |
c906108c | 9432 | |
74531fed PA |
9433 | /* If we got an ordinary packet, return that to our caller. */ |
9434 | if (c == '$') | |
c906108c SS |
9435 | { |
9436 | if (remote_debug) | |
43e526b9 | 9437 | { |
6f8976bf YQ |
9438 | std::string str |
9439 | = escape_buffer (*buf, | |
9440 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9441 | ||
9442 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9443 | str.c_str ()); | |
9444 | ||
567a3e54 SM |
9445 | if (val > REMOTE_DEBUG_MAX_CHAR) |
9446 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9447 | val - REMOTE_DEBUG_MAX_CHAR); | |
6e5abd65 | 9448 | |
6f8976bf | 9449 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9450 | } |
a6f3e723 SL |
9451 | |
9452 | /* Skip the ack char if we're in no-ack mode. */ | |
9453 | if (!rs->noack_mode) | |
c33e31fd | 9454 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9455 | if (is_notif != NULL) |
9456 | *is_notif = 0; | |
0876f84a | 9457 | return val; |
c906108c SS |
9458 | } |
9459 | ||
74531fed PA |
9460 | /* If we got a notification, handle it, and go back to looking |
9461 | for a packet. */ | |
9462 | else | |
9463 | { | |
9464 | gdb_assert (c == '%'); | |
9465 | ||
9466 | if (remote_debug) | |
9467 | { | |
b3ced9ba | 9468 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9469 | |
6e5abd65 PA |
9470 | fprintf_unfiltered (gdb_stdlog, |
9471 | " Notification received: %s\n", | |
b3ced9ba | 9472 | str.c_str ()); |
74531fed | 9473 | } |
fee9eda9 YQ |
9474 | if (is_notif != NULL) |
9475 | *is_notif = 1; | |
c906108c | 9476 | |
5965e028 | 9477 | handle_notification (rs->notif_state, *buf); |
c906108c | 9478 | |
74531fed | 9479 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9480 | |
74531fed | 9481 | if (expecting_notif) |
fee9eda9 | 9482 | return val; |
74531fed PA |
9483 | } |
9484 | } | |
9485 | } | |
9486 | ||
9487 | static int | |
9488 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9489 | { | |
fee9eda9 | 9490 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9491 | } |
9492 | ||
9493 | static int | |
fee9eda9 YQ |
9494 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9495 | int *is_notif) | |
74531fed | 9496 | { |
fee9eda9 YQ |
9497 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9498 | is_notif); | |
c906108c | 9499 | } |
74531fed | 9500 | |
cbb8991c DB |
9501 | /* Check whether EVENT is a fork event for the process specified |
9502 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9503 | ||
9504 | static int | |
9505 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9506 | QUEUE_ITER (stop_reply_p) *iter, | |
9507 | stop_reply_p event, | |
9508 | void *data) | |
9509 | { | |
19ba03f4 | 9510 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9511 | int parent_pid = *(int *) param->input; |
9512 | ||
9513 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9514 | { | |
9515 | struct remote_state *rs = get_remote_state (); | |
9516 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9517 | int res; | |
9518 | ||
9519 | res = remote_vkill (child_pid, rs); | |
9520 | if (res != 0) | |
9521 | error (_("Can't kill fork child process %d"), child_pid); | |
9522 | } | |
9523 | ||
9524 | return 1; | |
9525 | } | |
9526 | ||
9527 | /* Kill any new fork children of process PID that haven't been | |
9528 | processed by follow_fork. */ | |
9529 | ||
9530 | static void | |
9531 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9532 | { | |
9533 | struct thread_info *thread; | |
9534 | struct notif_client *notif = ¬if_client_stop; | |
9535 | struct queue_iter_param param; | |
9536 | ||
9537 | /* Kill the fork child threads of any threads in process PID | |
9538 | that are stopped at a fork event. */ | |
9539 | ALL_NON_EXITED_THREADS (thread) | |
9540 | { | |
9541 | struct target_waitstatus *ws = &thread->pending_follow; | |
9542 | ||
9543 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9544 | { | |
9545 | struct remote_state *rs = get_remote_state (); | |
9546 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9547 | int res; | |
9548 | ||
9549 | res = remote_vkill (child_pid, rs); | |
9550 | if (res != 0) | |
9551 | error (_("Can't kill fork child process %d"), child_pid); | |
9552 | } | |
9553 | } | |
9554 | ||
9555 | /* Check for any pending fork events (not reported or processed yet) | |
9556 | in process PID and kill those fork child threads as well. */ | |
9557 | remote_notif_get_pending_events (notif); | |
9558 | param.input = &pid; | |
9559 | param.output = NULL; | |
9560 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9561 | kill_child_of_pending_fork, ¶m); | |
9562 | } | |
9563 | ||
c906108c | 9564 | \f |
8020350c DB |
9565 | /* Target hook to kill the current inferior. */ |
9566 | ||
f6ac5f3d PA |
9567 | void |
9568 | remote_target::kill () | |
43ff13b4 | 9569 | { |
8020350c DB |
9570 | int res = -1; |
9571 | int pid = ptid_get_pid (inferior_ptid); | |
9572 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9573 | |
8020350c | 9574 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9575 | { |
8020350c DB |
9576 | /* If we're stopped while forking and we haven't followed yet, |
9577 | kill the child task. We need to do this before killing the | |
9578 | parent task because if this is a vfork then the parent will | |
9579 | be sleeping. */ | |
9580 | kill_new_fork_children (pid, rs); | |
9581 | ||
9582 | res = remote_vkill (pid, rs); | |
9583 | if (res == 0) | |
0fdf84ca | 9584 | { |
bc1e6c81 | 9585 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9586 | return; |
9587 | } | |
8020350c | 9588 | } |
0fdf84ca | 9589 | |
8020350c DB |
9590 | /* If we are in 'target remote' mode and we are killing the only |
9591 | inferior, then we will tell gdbserver to exit and unpush the | |
9592 | target. */ | |
9593 | if (res == -1 && !remote_multi_process_p (rs) | |
9594 | && number_of_live_inferiors () == 1) | |
9595 | { | |
9596 | remote_kill_k (); | |
9597 | ||
9598 | /* We've killed the remote end, we get to mourn it. If we are | |
9599 | not in extended mode, mourning the inferior also unpushes | |
9600 | remote_ops from the target stack, which closes the remote | |
9601 | connection. */ | |
bc1e6c81 | 9602 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9603 | |
9604 | return; | |
0fdf84ca | 9605 | } |
43ff13b4 | 9606 | |
8020350c | 9607 | error (_("Can't kill process")); |
43ff13b4 JM |
9608 | } |
9609 | ||
8020350c DB |
9610 | /* Send a kill request to the target using the 'vKill' packet. */ |
9611 | ||
82f73884 PA |
9612 | static int |
9613 | remote_vkill (int pid, struct remote_state *rs) | |
9614 | { | |
4082afcc | 9615 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9616 | return -1; |
9617 | ||
9618 | /* Tell the remote target to detach. */ | |
bba74b36 | 9619 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9620 | putpkt (rs->buf); |
9621 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9622 | ||
4082afcc PA |
9623 | switch (packet_ok (rs->buf, |
9624 | &remote_protocol_packets[PACKET_vKill])) | |
9625 | { | |
9626 | case PACKET_OK: | |
9627 | return 0; | |
9628 | case PACKET_ERROR: | |
9629 | return 1; | |
9630 | case PACKET_UNKNOWN: | |
9631 | return -1; | |
9632 | default: | |
9633 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9634 | } | |
82f73884 PA |
9635 | } |
9636 | ||
8020350c DB |
9637 | /* Send a kill request to the target using the 'k' packet. */ |
9638 | ||
82f73884 | 9639 | static void |
8020350c | 9640 | remote_kill_k (void) |
82f73884 | 9641 | { |
8020350c DB |
9642 | /* Catch errors so the user can quit from gdb even when we |
9643 | aren't on speaking terms with the remote system. */ | |
9644 | TRY | |
82f73884 | 9645 | { |
82f73884 | 9646 | putpkt ("k"); |
82f73884 | 9647 | } |
8020350c DB |
9648 | CATCH (ex, RETURN_MASK_ERROR) |
9649 | { | |
9650 | if (ex.error == TARGET_CLOSE_ERROR) | |
9651 | { | |
9652 | /* If we got an (EOF) error that caused the target | |
9653 | to go away, then we're done, that's what we wanted. | |
9654 | "k" is susceptible to cause a premature EOF, given | |
9655 | that the remote server isn't actually required to | |
9656 | reply to "k", and it can happen that it doesn't | |
9657 | even get to reply ACK to the "k". */ | |
9658 | return; | |
9659 | } | |
82f73884 | 9660 | |
8020350c DB |
9661 | /* Otherwise, something went wrong. We didn't actually kill |
9662 | the target. Just propagate the exception, and let the | |
9663 | user or higher layers decide what to do. */ | |
9664 | throw_exception (ex); | |
9665 | } | |
9666 | END_CATCH | |
82f73884 PA |
9667 | } |
9668 | ||
f6ac5f3d PA |
9669 | void |
9670 | remote_target::mourn_inferior () | |
c906108c | 9671 | { |
8020350c | 9672 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9673 | |
8020350c DB |
9674 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9675 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9676 | { | |
f6ac5f3d | 9677 | unpush_target (this); |
c906108c | 9678 | |
8020350c DB |
9679 | /* remote_close takes care of doing most of the clean up. */ |
9680 | generic_mourn_inferior (); | |
9681 | return; | |
9682 | } | |
c906108c | 9683 | |
e24a49d8 PA |
9684 | /* In case we got here due to an error, but we're going to stay |
9685 | connected. */ | |
9686 | rs->waiting_for_stop_reply = 0; | |
9687 | ||
dc1981d7 PA |
9688 | /* If the current general thread belonged to the process we just |
9689 | detached from or has exited, the remote side current general | |
9690 | thread becomes undefined. Considering a case like this: | |
9691 | ||
9692 | - We just got here due to a detach. | |
9693 | - The process that we're detaching from happens to immediately | |
9694 | report a global breakpoint being hit in non-stop mode, in the | |
9695 | same thread we had selected before. | |
9696 | - GDB attaches to this process again. | |
9697 | - This event happens to be the next event we handle. | |
9698 | ||
9699 | GDB would consider that the current general thread didn't need to | |
9700 | be set on the stub side (with Hg), since for all it knew, | |
9701 | GENERAL_THREAD hadn't changed. | |
9702 | ||
9703 | Notice that although in all-stop mode, the remote server always | |
9704 | sets the current thread to the thread reporting the stop event, | |
9705 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9706 | not* change the current thread when reporting a breakpoint hit, | |
9707 | due to the decoupling of event reporting and event handling. | |
9708 | ||
9709 | To keep things simple, we always invalidate our notion of the | |
9710 | current thread. */ | |
47f8a51d | 9711 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9712 | |
8020350c | 9713 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9714 | generic_mourn_inferior (); |
9715 | ||
d729566a | 9716 | if (!have_inferiors ()) |
2d717e4f | 9717 | { |
82f73884 PA |
9718 | if (!remote_multi_process_p (rs)) |
9719 | { | |
9720 | /* Check whether the target is running now - some remote stubs | |
9721 | automatically restart after kill. */ | |
9722 | putpkt ("?"); | |
9723 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9724 | ||
9725 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9726 | { | |
3e43a32a MS |
9727 | /* Assume that the target has been restarted. Set |
9728 | inferior_ptid so that bits of core GDB realizes | |
9729 | there's something here, e.g., so that the user can | |
9730 | say "kill" again. */ | |
82f73884 PA |
9731 | inferior_ptid = magic_null_ptid; |
9732 | } | |
82f73884 | 9733 | } |
2d717e4f DJ |
9734 | } |
9735 | } | |
c906108c | 9736 | |
57810aa7 | 9737 | bool |
f6ac5f3d | 9738 | extended_remote_target::supports_disable_randomization () |
03583c20 | 9739 | { |
4082afcc | 9740 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9741 | } |
9742 | ||
9743 | static void | |
9744 | extended_remote_disable_randomization (int val) | |
9745 | { | |
9746 | struct remote_state *rs = get_remote_state (); | |
9747 | char *reply; | |
9748 | ||
bba74b36 YQ |
9749 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9750 | val); | |
03583c20 | 9751 | putpkt (rs->buf); |
b6bb3468 | 9752 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9753 | if (*reply == '\0') |
9754 | error (_("Target does not support QDisableRandomization.")); | |
9755 | if (strcmp (reply, "OK") != 0) | |
9756 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9757 | } | |
9758 | ||
2d717e4f | 9759 | static int |
7c5ded6a | 9760 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9761 | { |
9762 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9763 | int len; |
94585166 | 9764 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9765 | |
2d717e4f DJ |
9766 | /* If the user has disabled vRun support, or we have detected that |
9767 | support is not available, do not try it. */ | |
4082afcc | 9768 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9769 | return -1; |
424163ea | 9770 | |
2d717e4f DJ |
9771 | strcpy (rs->buf, "vRun;"); |
9772 | len = strlen (rs->buf); | |
c906108c | 9773 | |
2d717e4f DJ |
9774 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9775 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9776 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9777 | strlen (remote_exec_file)); | |
2d717e4f | 9778 | |
7c5ded6a | 9779 | if (!args.empty ()) |
2d717e4f | 9780 | { |
2d717e4f | 9781 | int i; |
2d717e4f | 9782 | |
773a1edc | 9783 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9784 | for (i = 0; argv[i] != NULL; i++) |
9785 | { | |
9786 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9787 | error (_("Argument list too long for run packet")); | |
9788 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9789 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9790 | strlen (argv[i])); | |
2d717e4f | 9791 | } |
2d717e4f DJ |
9792 | } |
9793 | ||
9794 | rs->buf[len++] = '\0'; | |
9795 | ||
9796 | putpkt (rs->buf); | |
9797 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9798 | ||
4082afcc | 9799 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9800 | { |
4082afcc | 9801 | case PACKET_OK: |
3405876a | 9802 | /* We have a wait response. All is well. */ |
2d717e4f | 9803 | return 0; |
4082afcc PA |
9804 | case PACKET_UNKNOWN: |
9805 | return -1; | |
9806 | case PACKET_ERROR: | |
2d717e4f DJ |
9807 | if (remote_exec_file[0] == '\0') |
9808 | error (_("Running the default executable on the remote target failed; " | |
9809 | "try \"set remote exec-file\"?")); | |
9810 | else | |
9811 | error (_("Running \"%s\" on the remote target failed"), | |
9812 | remote_exec_file); | |
4082afcc PA |
9813 | default: |
9814 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9815 | } |
c906108c SS |
9816 | } |
9817 | ||
0a2dde4a SDJ |
9818 | /* Helper function to send set/unset environment packets. ACTION is |
9819 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9820 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9821 | sent. */ | |
9822 | ||
9823 | static void | |
9824 | send_environment_packet (struct remote_state *rs, | |
9825 | const char *action, | |
9826 | const char *packet, | |
9827 | const char *value) | |
9828 | { | |
9829 | /* Convert the environment variable to an hex string, which | |
9830 | is the best format to be transmitted over the wire. */ | |
9831 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9832 | strlen (value)); | |
9833 | ||
9834 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9835 | "%s:%s", packet, encoded_value.c_str ()); | |
9836 | ||
9837 | putpkt (rs->buf); | |
9838 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9839 | if (strcmp (rs->buf, "OK") != 0) | |
9840 | warning (_("Unable to %s environment variable '%s' on remote."), | |
9841 | action, value); | |
9842 | } | |
9843 | ||
9844 | /* Helper function to handle the QEnvironment* packets. */ | |
9845 | ||
9846 | static void | |
9847 | extended_remote_environment_support (struct remote_state *rs) | |
9848 | { | |
9849 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) | |
9850 | { | |
9851 | putpkt ("QEnvironmentReset"); | |
9852 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9853 | if (strcmp (rs->buf, "OK") != 0) | |
9854 | warning (_("Unable to reset environment on remote.")); | |
9855 | } | |
9856 | ||
9857 | gdb_environ *e = ¤t_inferior ()->environment; | |
9858 | ||
9859 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9860 | for (const std::string &el : e->user_set_env ()) | |
9861 | send_environment_packet (rs, "set", "QEnvironmentHexEncoded", | |
9862 | el.c_str ()); | |
9863 | ||
9864 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9865 | for (const std::string &el : e->user_unset_env ()) | |
9866 | send_environment_packet (rs, "unset", "QEnvironmentUnset", el.c_str ()); | |
9867 | } | |
9868 | ||
bc3b087d SDJ |
9869 | /* Helper function to set the current working directory for the |
9870 | inferior in the remote target. */ | |
9871 | ||
9872 | static void | |
9873 | extended_remote_set_inferior_cwd (struct remote_state *rs) | |
9874 | { | |
9875 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
9876 | { | |
9877 | const char *inferior_cwd = get_inferior_cwd (); | |
9878 | ||
9879 | if (inferior_cwd != NULL) | |
9880 | { | |
9881 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
9882 | strlen (inferior_cwd)); | |
9883 | ||
9884 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9885 | "QSetWorkingDir:%s", hexpath.c_str ()); | |
9886 | } | |
9887 | else | |
9888 | { | |
9889 | /* An empty inferior_cwd means that the user wants us to | |
9890 | reset the remote server's inferior's cwd. */ | |
9891 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9892 | "QSetWorkingDir:"); | |
9893 | } | |
9894 | ||
9895 | putpkt (rs->buf); | |
9896 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9897 | if (packet_ok (rs->buf, | |
9898 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
9899 | != PACKET_OK) | |
9900 | error (_("\ | |
9901 | Remote replied unexpectedly while setting the inferior's working\n\ | |
9902 | directory: %s"), | |
9903 | rs->buf); | |
9904 | ||
9905 | } | |
9906 | } | |
9907 | ||
2d717e4f DJ |
9908 | /* In the extended protocol we want to be able to do things like |
9909 | "run" and have them basically work as expected. So we need | |
9910 | a special create_inferior function. We support changing the | |
9911 | executable file and the command line arguments, but not the | |
9912 | environment. */ | |
9913 | ||
f6ac5f3d PA |
9914 | void |
9915 | extended_remote_target::create_inferior (const char *exec_file, | |
9916 | const std::string &args, | |
9917 | char **env, int from_tty) | |
43ff13b4 | 9918 | { |
3405876a PA |
9919 | int run_worked; |
9920 | char *stop_reply; | |
9921 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9922 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9923 | |
43ff13b4 | 9924 | /* If running asynchronously, register the target file descriptor |
23860348 | 9925 | with the event loop. */ |
75c99385 | 9926 | if (target_can_async_p ()) |
6a3753b3 | 9927 | target_async (1); |
43ff13b4 | 9928 | |
03583c20 | 9929 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 9930 | if (supports_disable_randomization ()) |
03583c20 UW |
9931 | extended_remote_disable_randomization (disable_randomization); |
9932 | ||
aefd8b33 SDJ |
9933 | /* If startup-with-shell is on, we inform gdbserver to start the |
9934 | remote inferior using a shell. */ | |
9935 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9936 | { | |
9937 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9938 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9939 | putpkt (rs->buf); | |
9940 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9941 | if (strcmp (rs->buf, "OK") != 0) | |
9942 | error (_("\ | |
9943 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9944 | rs->buf); | |
9945 | } | |
9946 | ||
0a2dde4a SDJ |
9947 | extended_remote_environment_support (rs); |
9948 | ||
bc3b087d SDJ |
9949 | extended_remote_set_inferior_cwd (rs); |
9950 | ||
43ff13b4 | 9951 | /* Now restart the remote server. */ |
3405876a PA |
9952 | run_worked = extended_remote_run (args) != -1; |
9953 | if (!run_worked) | |
2d717e4f DJ |
9954 | { |
9955 | /* vRun was not supported. Fail if we need it to do what the | |
9956 | user requested. */ | |
9957 | if (remote_exec_file[0]) | |
9958 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9959 | if (!args.empty ()) |
2d717e4f | 9960 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9961 | |
2d717e4f DJ |
9962 | /* Fall back to "R". */ |
9963 | extended_remote_restart (); | |
9964 | } | |
424163ea | 9965 | |
6c95b8df PA |
9966 | if (!have_inferiors ()) |
9967 | { | |
9968 | /* Clean up from the last time we ran, before we mark the target | |
9969 | running again. This will mark breakpoints uninserted, and | |
9970 | get_offsets may insert breakpoints. */ | |
9971 | init_thread_list (); | |
9972 | init_wait_for_inferior (); | |
9973 | } | |
45280a52 | 9974 | |
3405876a PA |
9975 | /* vRun's success return is a stop reply. */ |
9976 | stop_reply = run_worked ? rs->buf : NULL; | |
9977 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9978 | |
2d717e4f DJ |
9979 | /* Get updated offsets, if the stub uses qOffsets. */ |
9980 | get_offsets (); | |
2d717e4f | 9981 | } |
c906108c | 9982 | \f |
c5aa993b | 9983 | |
b775012e LM |
9984 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9985 | the list of conditions (in agent expression bytecode format), if any, the | |
9986 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9987 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9988 | |
9989 | static int | |
9990 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9991 | struct bp_target_info *bp_tgt, char *buf, |
9992 | char *buf_end) | |
b775012e | 9993 | { |
3cde5c42 | 9994 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
9995 | return 0; |
9996 | ||
9997 | buf += strlen (buf); | |
bba74b36 | 9998 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9999 | buf++; |
10000 | ||
83621223 | 10001 | /* Send conditions to the target. */ |
d538e36d | 10002 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10003 | { |
bba74b36 | 10004 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10005 | buf += strlen (buf); |
3cde5c42 | 10006 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10007 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10008 | *buf = '\0'; | |
10009 | } | |
b775012e LM |
10010 | return 0; |
10011 | } | |
10012 | ||
d3ce09f5 SS |
10013 | static void |
10014 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10015 | struct bp_target_info *bp_tgt, char *buf) | |
10016 | { | |
3cde5c42 | 10017 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10018 | return; |
10019 | ||
10020 | buf += strlen (buf); | |
10021 | ||
10022 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10023 | buf += strlen (buf); | |
10024 | ||
10025 | /* Concatenate all the agent expressions that are commands into the | |
10026 | cmds parameter. */ | |
df97be55 | 10027 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10028 | { |
10029 | sprintf (buf, "X%x,", aexpr->len); | |
10030 | buf += strlen (buf); | |
3cde5c42 | 10031 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10032 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10033 | *buf = '\0'; | |
10034 | } | |
d3ce09f5 SS |
10035 | } |
10036 | ||
8181d85f DJ |
10037 | /* Insert a breakpoint. On targets that have software breakpoint |
10038 | support, we ask the remote target to do the work; on targets | |
10039 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10040 | |
f6ac5f3d PA |
10041 | int |
10042 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10043 | struct bp_target_info *bp_tgt) | |
c906108c | 10044 | { |
d471ea57 AC |
10045 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10046 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10047 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10048 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10049 | |
4082afcc | 10050 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10051 | { |
0d5ed153 | 10052 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10053 | struct remote_state *rs; |
bba74b36 | 10054 | char *p, *endbuf; |
4fff2411 | 10055 | |
28439a30 PA |
10056 | /* Make sure the remote is pointing at the right process, if |
10057 | necessary. */ | |
10058 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10059 | set_general_process (); | |
10060 | ||
4fff2411 JZ |
10061 | rs = get_remote_state (); |
10062 | p = rs->buf; | |
bba74b36 | 10063 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 10064 | |
96baa820 JM |
10065 | *(p++) = 'Z'; |
10066 | *(p++) = '0'; | |
10067 | *(p++) = ','; | |
7c0f6dcc | 10068 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10069 | p += hexnumstr (p, addr); |
579c6ad9 | 10070 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10071 | |
f6ac5f3d | 10072 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10073 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10074 | |
f6ac5f3d | 10075 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10076 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10077 | ||
6d820c5c DJ |
10078 | putpkt (rs->buf); |
10079 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10080 | |
6d820c5c | 10081 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10082 | { |
d471ea57 AC |
10083 | case PACKET_ERROR: |
10084 | return -1; | |
10085 | case PACKET_OK: | |
10086 | return 0; | |
10087 | case PACKET_UNKNOWN: | |
10088 | break; | |
96baa820 JM |
10089 | } |
10090 | } | |
c906108c | 10091 | |
0000e5cc PA |
10092 | /* If this breakpoint has target-side commands but this stub doesn't |
10093 | support Z0 packets, throw error. */ | |
3cde5c42 | 10094 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10095 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10096 | Target doesn't support breakpoints that have target side commands.")); | |
10097 | ||
f6ac5f3d | 10098 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10099 | } |
10100 | ||
f6ac5f3d PA |
10101 | int |
10102 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10103 | struct bp_target_info *bp_tgt, | |
10104 | enum remove_bp_reason reason) | |
c906108c | 10105 | { |
8181d85f | 10106 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10107 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10108 | |
4082afcc | 10109 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10110 | { |
6d820c5c | 10111 | char *p = rs->buf; |
bba74b36 | 10112 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 10113 | |
28439a30 PA |
10114 | /* Make sure the remote is pointing at the right process, if |
10115 | necessary. */ | |
10116 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10117 | set_general_process (); | |
10118 | ||
96baa820 JM |
10119 | *(p++) = 'z'; |
10120 | *(p++) = '0'; | |
10121 | *(p++) = ','; | |
10122 | ||
8181d85f DJ |
10123 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10124 | p += hexnumstr (p, addr); | |
579c6ad9 | 10125 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10126 | |
6d820c5c DJ |
10127 | putpkt (rs->buf); |
10128 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10129 | |
6d820c5c | 10130 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10131 | } |
10132 | ||
f6ac5f3d | 10133 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10134 | } |
10135 | ||
f486487f | 10136 | static enum Z_packet_type |
d471ea57 AC |
10137 | watchpoint_to_Z_packet (int type) |
10138 | { | |
10139 | switch (type) | |
10140 | { | |
10141 | case hw_write: | |
bb858e6a | 10142 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10143 | break; |
10144 | case hw_read: | |
bb858e6a | 10145 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10146 | break; |
10147 | case hw_access: | |
bb858e6a | 10148 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10149 | break; |
10150 | default: | |
8e65ff28 | 10151 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10152 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10153 | } |
10154 | } | |
10155 | ||
f6ac5f3d PA |
10156 | int |
10157 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10158 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10159 | { |
d01949b6 | 10160 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10161 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10162 | char *p; |
d471ea57 | 10163 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10164 | |
4082afcc | 10165 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10166 | return 1; |
802188a7 | 10167 | |
28439a30 PA |
10168 | /* Make sure the remote is pointing at the right process, if |
10169 | necessary. */ | |
10170 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10171 | set_general_process (); | |
10172 | ||
bba74b36 | 10173 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 10174 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10175 | addr = remote_address_masked (addr); |
10176 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10177 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10178 | |
6d820c5c DJ |
10179 | putpkt (rs->buf); |
10180 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10181 | |
6d820c5c | 10182 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10183 | { |
10184 | case PACKET_ERROR: | |
d471ea57 | 10185 | return -1; |
85d721b8 PA |
10186 | case PACKET_UNKNOWN: |
10187 | return 1; | |
d471ea57 AC |
10188 | case PACKET_OK: |
10189 | return 0; | |
10190 | } | |
8e65ff28 | 10191 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10192 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10193 | } |
10194 | ||
57810aa7 | 10195 | bool |
f6ac5f3d PA |
10196 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10197 | CORE_ADDR start, int length) | |
283002cf MR |
10198 | { |
10199 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10200 | ||
10201 | return diff < length; | |
10202 | } | |
10203 | ||
d471ea57 | 10204 | |
f6ac5f3d PA |
10205 | int |
10206 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10207 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10208 | { |
d01949b6 | 10209 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10210 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10211 | char *p; |
d471ea57 AC |
10212 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10213 | ||
4082afcc | 10214 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10215 | return -1; |
802188a7 | 10216 | |
28439a30 PA |
10217 | /* Make sure the remote is pointing at the right process, if |
10218 | necessary. */ | |
10219 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10220 | set_general_process (); | |
10221 | ||
bba74b36 | 10222 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 10223 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10224 | addr = remote_address_masked (addr); |
10225 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10226 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
10227 | putpkt (rs->buf); |
10228 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10229 | |
6d820c5c | 10230 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10231 | { |
10232 | case PACKET_ERROR: | |
10233 | case PACKET_UNKNOWN: | |
10234 | return -1; | |
10235 | case PACKET_OK: | |
10236 | return 0; | |
10237 | } | |
8e65ff28 | 10238 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10239 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10240 | } |
10241 | ||
3c3bea1c | 10242 | |
501eef12 | 10243 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 10244 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 10245 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 10246 | |
f6ac5f3d PA |
10247 | int |
10248 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10249 | { |
10250 | if (remote_hw_watchpoint_length_limit == 0) | |
10251 | return 0; | |
10252 | else if (remote_hw_watchpoint_length_limit < 0) | |
10253 | return 1; | |
10254 | else if (len <= remote_hw_watchpoint_length_limit) | |
10255 | return 1; | |
10256 | else | |
10257 | return 0; | |
10258 | } | |
10259 | ||
f6ac5f3d PA |
10260 | int |
10261 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10262 | { |
3c3bea1c GS |
10263 | if (type == bp_hardware_breakpoint) |
10264 | { | |
10265 | if (remote_hw_breakpoint_limit == 0) | |
10266 | return 0; | |
501eef12 AC |
10267 | else if (remote_hw_breakpoint_limit < 0) |
10268 | return 1; | |
3c3bea1c GS |
10269 | else if (cnt <= remote_hw_breakpoint_limit) |
10270 | return 1; | |
10271 | } | |
10272 | else | |
10273 | { | |
10274 | if (remote_hw_watchpoint_limit == 0) | |
10275 | return 0; | |
501eef12 AC |
10276 | else if (remote_hw_watchpoint_limit < 0) |
10277 | return 1; | |
3c3bea1c GS |
10278 | else if (ot) |
10279 | return -1; | |
10280 | else if (cnt <= remote_hw_watchpoint_limit) | |
10281 | return 1; | |
10282 | } | |
10283 | return -1; | |
10284 | } | |
10285 | ||
f7e6eed5 PA |
10286 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10287 | ||
57810aa7 | 10288 | bool |
f6ac5f3d | 10289 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10290 | { |
799a2abe | 10291 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10292 | |
799a2abe | 10293 | return (thread->priv != NULL |
7aabaf9d SM |
10294 | && (get_remote_thread_info (thread)->stop_reason |
10295 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10296 | } |
10297 | ||
10298 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10299 | remote. */ | |
10300 | ||
57810aa7 | 10301 | bool |
f6ac5f3d | 10302 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10303 | { |
f7e6eed5 PA |
10304 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10305 | } | |
10306 | ||
10307 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10308 | ||
57810aa7 | 10309 | bool |
f6ac5f3d | 10310 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10311 | { |
799a2abe | 10312 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10313 | |
799a2abe | 10314 | return (thread->priv != NULL |
7aabaf9d SM |
10315 | && (get_remote_thread_info (thread)->stop_reason |
10316 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10317 | } |
10318 | ||
10319 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10320 | remote. */ | |
10321 | ||
57810aa7 | 10322 | bool |
f6ac5f3d | 10323 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10324 | { |
f7e6eed5 PA |
10325 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10326 | } | |
10327 | ||
57810aa7 | 10328 | bool |
f6ac5f3d | 10329 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10330 | { |
799a2abe | 10331 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10332 | |
799a2abe | 10333 | return (thread->priv != NULL |
7aabaf9d SM |
10334 | && (get_remote_thread_info (thread)->stop_reason |
10335 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10336 | } |
10337 | ||
57810aa7 | 10338 | bool |
f6ac5f3d | 10339 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10340 | { |
799a2abe | 10341 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10342 | |
799a2abe | 10343 | if (thread->priv != NULL |
7aabaf9d SM |
10344 | && (get_remote_thread_info (thread)->stop_reason |
10345 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10346 | { |
7aabaf9d | 10347 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10348 | return true; |
4aa7a7f5 JJ |
10349 | } |
10350 | ||
57810aa7 | 10351 | return false; |
3c3bea1c GS |
10352 | } |
10353 | ||
10354 | ||
f6ac5f3d PA |
10355 | int |
10356 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10357 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10358 | { |
0d5ed153 | 10359 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10360 | struct remote_state *rs; |
bba74b36 | 10361 | char *p, *endbuf; |
dd61ec5c | 10362 | char *message; |
3c3bea1c | 10363 | |
4082afcc | 10364 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10365 | return -1; |
2bc416ba | 10366 | |
28439a30 PA |
10367 | /* Make sure the remote is pointing at the right process, if |
10368 | necessary. */ | |
10369 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10370 | set_general_process (); | |
10371 | ||
4fff2411 JZ |
10372 | rs = get_remote_state (); |
10373 | p = rs->buf; | |
bba74b36 | 10374 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10375 | |
96baa820 JM |
10376 | *(p++) = 'Z'; |
10377 | *(p++) = '1'; | |
10378 | *(p++) = ','; | |
802188a7 | 10379 | |
0d5ed153 | 10380 | addr = remote_address_masked (addr); |
96baa820 | 10381 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10382 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10383 | |
f6ac5f3d | 10384 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10385 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10386 | |
f6ac5f3d | 10387 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10388 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10389 | ||
6d820c5c DJ |
10390 | putpkt (rs->buf); |
10391 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10392 | |
6d820c5c | 10393 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10394 | { |
10395 | case PACKET_ERROR: | |
dd61ec5c MW |
10396 | if (rs->buf[1] == '.') |
10397 | { | |
10398 | message = strchr (rs->buf + 2, '.'); | |
10399 | if (message) | |
0316657e | 10400 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10401 | } |
10402 | return -1; | |
d471ea57 AC |
10403 | case PACKET_UNKNOWN: |
10404 | return -1; | |
10405 | case PACKET_OK: | |
10406 | return 0; | |
10407 | } | |
8e65ff28 | 10408 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10409 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10410 | } |
10411 | ||
d471ea57 | 10412 | |
f6ac5f3d PA |
10413 | int |
10414 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10415 | struct bp_target_info *bp_tgt) | |
96baa820 | 10416 | { |
8181d85f | 10417 | CORE_ADDR addr; |
d01949b6 | 10418 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10419 | char *p = rs->buf; |
bba74b36 | 10420 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10421 | |
4082afcc | 10422 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10423 | return -1; |
802188a7 | 10424 | |
28439a30 PA |
10425 | /* Make sure the remote is pointing at the right process, if |
10426 | necessary. */ | |
10427 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10428 | set_general_process (); | |
10429 | ||
96baa820 JM |
10430 | *(p++) = 'z'; |
10431 | *(p++) = '1'; | |
10432 | *(p++) = ','; | |
802188a7 | 10433 | |
8181d85f | 10434 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10435 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10436 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10437 | |
6d820c5c DJ |
10438 | putpkt (rs->buf); |
10439 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10440 | |
6d820c5c | 10441 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10442 | { |
10443 | case PACKET_ERROR: | |
10444 | case PACKET_UNKNOWN: | |
10445 | return -1; | |
10446 | case PACKET_OK: | |
10447 | return 0; | |
10448 | } | |
8e65ff28 | 10449 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10450 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10451 | } |
96baa820 | 10452 | |
4a5e7a5b PA |
10453 | /* Verify memory using the "qCRC:" request. */ |
10454 | ||
f6ac5f3d PA |
10455 | int |
10456 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10457 | { |
10458 | struct remote_state *rs = get_remote_state (); | |
10459 | unsigned long host_crc, target_crc; | |
10460 | char *tmp; | |
10461 | ||
936d2992 PA |
10462 | /* It doesn't make sense to use qCRC if the remote target is |
10463 | connected but not running. */ | |
10464 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10465 | { | |
10466 | enum packet_result result; | |
28439a30 | 10467 | |
936d2992 PA |
10468 | /* Make sure the remote is pointing at the right process. */ |
10469 | set_general_process (); | |
4a5e7a5b | 10470 | |
936d2992 PA |
10471 | /* FIXME: assumes lma can fit into long. */ |
10472 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10473 | (long) lma, (long) size); | |
10474 | putpkt (rs->buf); | |
4a5e7a5b | 10475 | |
936d2992 PA |
10476 | /* Be clever; compute the host_crc before waiting for target |
10477 | reply. */ | |
10478 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10479 | ||
10480 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10481 | |
936d2992 PA |
10482 | result = packet_ok (rs->buf, |
10483 | &remote_protocol_packets[PACKET_qCRC]); | |
10484 | if (result == PACKET_ERROR) | |
10485 | return -1; | |
10486 | else if (result == PACKET_OK) | |
10487 | { | |
10488 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10489 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10490 | |
936d2992 PA |
10491 | return (host_crc == target_crc); |
10492 | } | |
10493 | } | |
4a5e7a5b | 10494 | |
f6ac5f3d | 10495 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10496 | } |
10497 | ||
c906108c SS |
10498 | /* compare-sections command |
10499 | ||
10500 | With no arguments, compares each loadable section in the exec bfd | |
10501 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10502 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10503 | |
c906108c | 10504 | static void |
ac88e2de | 10505 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10506 | { |
10507 | asection *s; | |
ce359b09 | 10508 | const char *sectname; |
c906108c SS |
10509 | bfd_size_type size; |
10510 | bfd_vma lma; | |
10511 | int matched = 0; | |
10512 | int mismatched = 0; | |
4a5e7a5b | 10513 | int res; |
95cf3b38 | 10514 | int read_only = 0; |
c906108c SS |
10515 | |
10516 | if (!exec_bfd) | |
8a3fe4f8 | 10517 | error (_("command cannot be used without an exec file")); |
c906108c | 10518 | |
95cf3b38 DT |
10519 | if (args != NULL && strcmp (args, "-r") == 0) |
10520 | { | |
10521 | read_only = 1; | |
10522 | args = NULL; | |
10523 | } | |
10524 | ||
c5aa993b | 10525 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10526 | { |
10527 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10528 | continue; /* Skip non-loadable section. */ |
c906108c | 10529 | |
95cf3b38 DT |
10530 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10531 | continue; /* Skip writeable sections */ | |
10532 | ||
2c500098 | 10533 | size = bfd_get_section_size (s); |
c906108c | 10534 | if (size == 0) |
0df8b418 | 10535 | continue; /* Skip zero-length section. */ |
c906108c | 10536 | |
ce359b09 | 10537 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10538 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10539 | continue; /* Not the section selected by user. */ |
c906108c | 10540 | |
0df8b418 | 10541 | matched = 1; /* Do this section. */ |
c906108c | 10542 | lma = s->lma; |
c906108c | 10543 | |
b80406ac TT |
10544 | gdb::byte_vector sectdata (size); |
10545 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10546 | |
b80406ac | 10547 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10548 | |
10549 | if (res == -1) | |
5af949e3 | 10550 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10551 | paddress (target_gdbarch (), lma), |
10552 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10553 | |
5af949e3 | 10554 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10555 | paddress (target_gdbarch (), lma), |
10556 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10557 | if (res) |
c906108c SS |
10558 | printf_filtered ("matched.\n"); |
10559 | else | |
c5aa993b JM |
10560 | { |
10561 | printf_filtered ("MIS-MATCHED!\n"); | |
10562 | mismatched++; | |
10563 | } | |
c906108c SS |
10564 | } |
10565 | if (mismatched > 0) | |
936d2992 | 10566 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10567 | the loaded file\n")); |
c906108c | 10568 | if (args && !matched) |
a3f17187 | 10569 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10570 | } |
10571 | ||
0e7f50da UW |
10572 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10573 | into remote target. The number of bytes written to the remote | |
10574 | target is returned, or -1 for error. */ | |
10575 | ||
9b409511 | 10576 | static enum target_xfer_status |
f6ac5f3d | 10577 | remote_write_qxfer (const char *object_name, |
0e7f50da | 10578 | const char *annex, const gdb_byte *writebuf, |
9b409511 | 10579 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10580 | struct packet_config *packet) |
10581 | { | |
10582 | int i, buf_len; | |
10583 | ULONGEST n; | |
0e7f50da UW |
10584 | struct remote_state *rs = get_remote_state (); |
10585 | int max_size = get_memory_write_packet_size (); | |
10586 | ||
7cc244de | 10587 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10588 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10589 | |
10590 | /* Insert header. */ | |
10591 | i = snprintf (rs->buf, max_size, | |
10592 | "qXfer:%s:write:%s:%s:", | |
10593 | object_name, annex ? annex : "", | |
10594 | phex_nz (offset, sizeof offset)); | |
10595 | max_size -= (i + 1); | |
10596 | ||
10597 | /* Escape as much data as fits into rs->buf. */ | |
10598 | buf_len = remote_escape_output | |
124e13d9 | 10599 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10600 | |
10601 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10602 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10603 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10604 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10605 | |
10606 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10607 | |
10608 | *xfered_len = n; | |
92ffd475 | 10609 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10610 | } |
10611 | ||
0876f84a DJ |
10612 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10613 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10614 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10615 | The number of bytes read may be less than LEN without indicating an | |
10616 | EOF. PACKET is checked and updated to indicate whether the remote | |
10617 | target supports this object. */ | |
10618 | ||
9b409511 | 10619 | static enum target_xfer_status |
f6ac5f3d | 10620 | remote_read_qxfer (const char *object_name, |
0876f84a DJ |
10621 | const char *annex, |
10622 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10623 | ULONGEST *xfered_len, |
0876f84a DJ |
10624 | struct packet_config *packet) |
10625 | { | |
0876f84a | 10626 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10627 | LONGEST i, n, packet_len; |
10628 | ||
7cc244de | 10629 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10630 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10631 | |
10632 | /* Check whether we've cached an end-of-object packet that matches | |
10633 | this request. */ | |
8e88304f | 10634 | if (rs->finished_object) |
0876f84a | 10635 | { |
8e88304f TT |
10636 | if (strcmp (object_name, rs->finished_object) == 0 |
10637 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10638 | && offset == rs->finished_offset) | |
9b409511 YQ |
10639 | return TARGET_XFER_EOF; |
10640 | ||
0876f84a DJ |
10641 | |
10642 | /* Otherwise, we're now reading something different. Discard | |
10643 | the cache. */ | |
8e88304f TT |
10644 | xfree (rs->finished_object); |
10645 | xfree (rs->finished_annex); | |
10646 | rs->finished_object = NULL; | |
10647 | rs->finished_annex = NULL; | |
0876f84a DJ |
10648 | } |
10649 | ||
10650 | /* Request only enough to fit in a single packet. The actual data | |
10651 | may not, since we don't know how much of it will need to be escaped; | |
10652 | the target is free to respond with slightly less data. We subtract | |
10653 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10654 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10655 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10656 | object_name, annex ? annex : "", | |
10657 | phex_nz (offset, sizeof offset), | |
10658 | phex_nz (n, sizeof n)); | |
10659 | i = putpkt (rs->buf); | |
10660 | if (i < 0) | |
2ed4b548 | 10661 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10662 | |
10663 | rs->buf[0] = '\0'; | |
10664 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10665 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10666 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10667 | |
10668 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10669 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10670 | ||
10671 | /* 'm' means there is (or at least might be) more data after this | |
10672 | batch. That does not make sense unless there's at least one byte | |
10673 | of data in this reply. */ | |
10674 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10675 | error (_("Remote qXfer reply contained no data.")); | |
10676 | ||
10677 | /* Got some data. */ | |
bc20a4af PA |
10678 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10679 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10680 | |
10681 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10682 | or possibly empty. If we have the final block of a non-empty |
10683 | object, record this fact to bypass a subsequent partial read. */ | |
10684 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10685 | { |
8e88304f TT |
10686 | rs->finished_object = xstrdup (object_name); |
10687 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10688 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10689 | } |
10690 | ||
9b409511 YQ |
10691 | if (i == 0) |
10692 | return TARGET_XFER_EOF; | |
10693 | else | |
10694 | { | |
10695 | *xfered_len = i; | |
10696 | return TARGET_XFER_OK; | |
10697 | } | |
0876f84a DJ |
10698 | } |
10699 | ||
f6ac5f3d PA |
10700 | enum target_xfer_status |
10701 | remote_target::xfer_partial (enum target_object object, | |
10702 | const char *annex, gdb_byte *readbuf, | |
10703 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10704 | ULONGEST *xfered_len) | |
c906108c | 10705 | { |
82f73884 | 10706 | struct remote_state *rs; |
c906108c | 10707 | int i; |
6d820c5c | 10708 | char *p2; |
1e3ff5ad | 10709 | char query_type; |
124e13d9 | 10710 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10711 | |
e6e4e701 | 10712 | set_remote_traceframe (); |
82f73884 PA |
10713 | set_general_thread (inferior_ptid); |
10714 | ||
10715 | rs = get_remote_state (); | |
10716 | ||
b2182ed2 | 10717 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10718 | if (object == TARGET_OBJECT_MEMORY) |
10719 | { | |
2d717e4f DJ |
10720 | /* If the remote target is connected but not running, we should |
10721 | pass this request down to a lower stratum (e.g. the executable | |
10722 | file). */ | |
10723 | if (!target_has_execution) | |
9b409511 | 10724 | return TARGET_XFER_EOF; |
2d717e4f | 10725 | |
21e3b9b9 | 10726 | if (writebuf != NULL) |
124e13d9 SM |
10727 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10728 | xfered_len); | |
21e3b9b9 | 10729 | else |
f6ac5f3d | 10730 | return remote_read_bytes (this, offset, readbuf, len, unit_size, |
124e13d9 | 10731 | xfered_len); |
21e3b9b9 DJ |
10732 | } |
10733 | ||
0df8b418 | 10734 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10735 | if (object == TARGET_OBJECT_SPU) |
10736 | { | |
10737 | if (readbuf) | |
f6ac5f3d | 10738 | return remote_read_qxfer ("spu", annex, readbuf, offset, len, |
9b409511 YQ |
10739 | xfered_len, &remote_protocol_packets |
10740 | [PACKET_qXfer_spu_read]); | |
0e7f50da | 10741 | else |
f6ac5f3d | 10742 | return remote_write_qxfer ("spu", annex, writebuf, offset, len, |
9b409511 YQ |
10743 | xfered_len, &remote_protocol_packets |
10744 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10745 | } |
10746 | ||
4aa995e1 PA |
10747 | /* Handle extra signal info using qxfer packets. */ |
10748 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10749 | { | |
10750 | if (readbuf) | |
f6ac5f3d | 10751 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 10752 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10753 | [PACKET_qXfer_siginfo_read]); |
10754 | else | |
f6ac5f3d | 10755 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 10756 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10757 | &remote_protocol_packets |
10758 | [PACKET_qXfer_siginfo_write]); | |
10759 | } | |
10760 | ||
0fb4aa4b PA |
10761 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10762 | { | |
10763 | if (readbuf) | |
f6ac5f3d | 10764 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 10765 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10766 | &remote_protocol_packets |
10767 | [PACKET_qXfer_statictrace_read]); | |
10768 | else | |
2ed4b548 | 10769 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10770 | } |
10771 | ||
a76d924d DJ |
10772 | /* Only handle flash writes. */ |
10773 | if (writebuf != NULL) | |
10774 | { | |
a76d924d DJ |
10775 | switch (object) |
10776 | { | |
10777 | case TARGET_OBJECT_FLASH: | |
f6ac5f3d | 10778 | return remote_flash_write (this, offset, len, xfered_len, |
9b409511 | 10779 | writebuf); |
a76d924d DJ |
10780 | |
10781 | default: | |
2ed4b548 | 10782 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10783 | } |
10784 | } | |
4b8a223f | 10785 | |
1e3ff5ad AC |
10786 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10787 | objects!!! Instead specify new query packets. */ | |
10788 | switch (object) | |
c906108c | 10789 | { |
1e3ff5ad AC |
10790 | case TARGET_OBJECT_AVR: |
10791 | query_type = 'R'; | |
10792 | break; | |
802188a7 RM |
10793 | |
10794 | case TARGET_OBJECT_AUXV: | |
0876f84a | 10795 | gdb_assert (annex == NULL); |
f6ac5f3d | 10796 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 10797 | xfered_len, |
0876f84a | 10798 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10799 | |
23181151 DJ |
10800 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10801 | return remote_read_qxfer | |
f6ac5f3d | 10802 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10803 | &remote_protocol_packets[PACKET_qXfer_features]); |
10804 | ||
cfa9d6d9 DJ |
10805 | case TARGET_OBJECT_LIBRARIES: |
10806 | return remote_read_qxfer | |
f6ac5f3d | 10807 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10808 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10809 | ||
2268b414 JK |
10810 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10811 | return remote_read_qxfer | |
f6ac5f3d | 10812 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10813 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10814 | ||
fd79ecee DJ |
10815 | case TARGET_OBJECT_MEMORY_MAP: |
10816 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10817 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 10818 | xfered_len, |
fd79ecee DJ |
10819 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10820 | ||
07e059b5 VP |
10821 | case TARGET_OBJECT_OSDATA: |
10822 | /* Should only get here if we're connected. */ | |
5d93a237 | 10823 | gdb_assert (rs->remote_desc); |
07e059b5 | 10824 | return remote_read_qxfer |
f6ac5f3d | 10825 | ("osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10826 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10827 | ||
dc146f7c VP |
10828 | case TARGET_OBJECT_THREADS: |
10829 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10830 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 10831 | xfered_len, |
dc146f7c VP |
10832 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10833 | ||
b3b9301e PA |
10834 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10835 | gdb_assert (annex == NULL); | |
10836 | return remote_read_qxfer | |
f6ac5f3d | 10837 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10838 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10839 | |
10840 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 10841 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 10842 | xfered_len, |
78d85199 | 10843 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10844 | |
10845 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 10846 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 10847 | xfered_len, |
169081d0 TG |
10848 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10849 | ||
9accd112 | 10850 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 10851 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 10852 | xfered_len, |
9accd112 MM |
10853 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10854 | ||
f4abbc16 | 10855 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 10856 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
10857 | len, xfered_len, |
10858 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10859 | ||
c78fa86a | 10860 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 10861 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
10862 | len, xfered_len, |
10863 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10864 | ||
1e3ff5ad | 10865 | default: |
2ed4b548 | 10866 | return TARGET_XFER_E_IO; |
c906108c SS |
10867 | } |
10868 | ||
0df8b418 | 10869 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10870 | large enough let the caller deal with it. */ |
ea9c271d | 10871 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10872 | return TARGET_XFER_E_IO; |
ea9c271d | 10873 | len = get_remote_packet_size (); |
1e3ff5ad | 10874 | |
23860348 | 10875 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10876 | if (!rs->remote_desc) |
8a3fe4f8 | 10877 | error (_("remote query is only available after target open")); |
c906108c | 10878 | |
1e3ff5ad | 10879 | gdb_assert (annex != NULL); |
4b8a223f | 10880 | gdb_assert (readbuf != NULL); |
c906108c | 10881 | |
6d820c5c | 10882 | p2 = rs->buf; |
c906108c SS |
10883 | *p2++ = 'q'; |
10884 | *p2++ = query_type; | |
10885 | ||
23860348 MS |
10886 | /* We used one buffer char for the remote protocol q command and |
10887 | another for the query type. As the remote protocol encapsulation | |
10888 | uses 4 chars plus one extra in case we are debugging | |
10889 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10890 | string. */ | |
c906108c | 10891 | i = 0; |
ea9c271d | 10892 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10893 | { |
1e3ff5ad AC |
10894 | /* Bad caller may have sent forbidden characters. */ |
10895 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10896 | *p2++ = annex[i]; | |
c906108c SS |
10897 | i++; |
10898 | } | |
1e3ff5ad AC |
10899 | *p2 = '\0'; |
10900 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10901 | |
6d820c5c | 10902 | i = putpkt (rs->buf); |
c5aa993b | 10903 | if (i < 0) |
2ed4b548 | 10904 | return TARGET_XFER_E_IO; |
c906108c | 10905 | |
6d820c5c DJ |
10906 | getpkt (&rs->buf, &rs->buf_size, 0); |
10907 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10908 | |
9b409511 | 10909 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 10910 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
10911 | } |
10912 | ||
09c98b44 DB |
10913 | /* Implementation of to_get_memory_xfer_limit. */ |
10914 | ||
f6ac5f3d PA |
10915 | ULONGEST |
10916 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
10917 | { |
10918 | return get_memory_write_packet_size (); | |
10919 | } | |
10920 | ||
f6ac5f3d PA |
10921 | int |
10922 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
10923 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10924 | CORE_ADDR *found_addrp) | |
08388c79 | 10925 | { |
f5656ead | 10926 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10927 | struct remote_state *rs = get_remote_state (); |
10928 | int max_size = get_memory_write_packet_size (); | |
10929 | struct packet_config *packet = | |
10930 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10931 | /* Number of packet bytes used to encode the pattern; |
10932 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10933 | int escaped_pattern_len; |
0df8b418 | 10934 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10935 | int used_pattern_len; |
10936 | int i; | |
10937 | int found; | |
10938 | ULONGEST found_addr; | |
10939 | ||
7cc244de PA |
10940 | /* Don't go to the target if we don't have to. This is done before |
10941 | checking packet_config_support to avoid the possibility that a | |
10942 | success for this edge case means the facility works in | |
10943 | general. */ | |
08388c79 DE |
10944 | if (pattern_len > search_space_len) |
10945 | return 0; | |
10946 | if (pattern_len == 0) | |
10947 | { | |
10948 | *found_addrp = start_addr; | |
10949 | return 1; | |
10950 | } | |
10951 | ||
10952 | /* If we already know the packet isn't supported, fall back to the simple | |
10953 | way of searching memory. */ | |
10954 | ||
4082afcc | 10955 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10956 | { |
10957 | /* Target doesn't provided special support, fall back and use the | |
10958 | standard support (copy memory and do the search here). */ | |
f6ac5f3d | 10959 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
10960 | pattern, pattern_len, found_addrp); |
10961 | } | |
10962 | ||
28439a30 PA |
10963 | /* Make sure the remote is pointing at the right process. */ |
10964 | set_general_process (); | |
10965 | ||
08388c79 DE |
10966 | /* Insert header. */ |
10967 | i = snprintf (rs->buf, max_size, | |
10968 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10969 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10970 | phex_nz (search_space_len, sizeof (search_space_len))); |
10971 | max_size -= (i + 1); | |
10972 | ||
10973 | /* Escape as much data as fits into rs->buf. */ | |
10974 | escaped_pattern_len = | |
124e13d9 | 10975 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10976 | &used_pattern_len, max_size); |
10977 | ||
10978 | /* Bail if the pattern is too large. */ | |
10979 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10980 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10981 | |
10982 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10983 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10984 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10985 | { | |
10986 | /* The request may not have worked because the command is not | |
10987 | supported. If so, fall back to the simple way. */ | |
7cc244de | 10988 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 10989 | { |
f6ac5f3d | 10990 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
10991 | pattern, pattern_len, found_addrp); |
10992 | } | |
10993 | return -1; | |
10994 | } | |
10995 | ||
10996 | if (rs->buf[0] == '0') | |
10997 | found = 0; | |
10998 | else if (rs->buf[0] == '1') | |
10999 | { | |
11000 | found = 1; | |
11001 | if (rs->buf[1] != ',') | |
10e0fa18 | 11002 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
11003 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
11004 | *found_addrp = found_addr; | |
11005 | } | |
11006 | else | |
10e0fa18 | 11007 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
11008 | |
11009 | return found; | |
11010 | } | |
11011 | ||
f6ac5f3d PA |
11012 | void |
11013 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11014 | { |
d01949b6 | 11015 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 11016 | char *p = rs->buf; |
96baa820 | 11017 | |
5d93a237 | 11018 | if (!rs->remote_desc) |
8a3fe4f8 | 11019 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11020 | |
23860348 | 11021 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11022 | if (command == NULL) |
11023 | command = ""; | |
11024 | ||
23860348 | 11025 | /* The query prefix. */ |
2e9f7625 DJ |
11026 | strcpy (rs->buf, "qRcmd,"); |
11027 | p = strchr (rs->buf, '\0'); | |
96baa820 | 11028 | |
3e43a32a MS |
11029 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
11030 | > get_remote_packet_size ()) | |
8a3fe4f8 | 11031 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11032 | |
23860348 | 11033 | /* Encode the actual command. */ |
a30bf1f1 | 11034 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11035 | |
6d820c5c | 11036 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11037 | error (_("Communication problem with target.")); |
96baa820 JM |
11038 | |
11039 | /* get/display the response */ | |
11040 | while (1) | |
11041 | { | |
2e9f7625 DJ |
11042 | char *buf; |
11043 | ||
00bf0b85 | 11044 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11045 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11046 | rs->buf[0] = '\0'; |
5b37825d PW |
11047 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
11048 | { | |
11049 | /* Timeout. Continue to (try to) read responses. | |
11050 | This is better than stopping with an error, assuming the stub | |
11051 | is still executing the (long) monitor command. | |
11052 | If needed, the user can interrupt gdb using C-c, obtaining | |
11053 | an effect similar to stop on timeout. */ | |
11054 | continue; | |
11055 | } | |
2e9f7625 | 11056 | buf = rs->buf; |
96baa820 | 11057 | if (buf[0] == '\0') |
8a3fe4f8 | 11058 | error (_("Target does not support this command.")); |
96baa820 JM |
11059 | if (buf[0] == 'O' && buf[1] != 'K') |
11060 | { | |
23860348 | 11061 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11062 | continue; |
11063 | } | |
11064 | if (strcmp (buf, "OK") == 0) | |
11065 | break; | |
7be570e7 JM |
11066 | if (strlen (buf) == 3 && buf[0] == 'E' |
11067 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11068 | { | |
8a3fe4f8 | 11069 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11070 | } |
96baa820 JM |
11071 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11072 | { | |
11073 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11074 | |
96baa820 JM |
11075 | fputc_unfiltered (c, outbuf); |
11076 | } | |
11077 | break; | |
11078 | } | |
11079 | } | |
11080 | ||
f6ac5f3d PA |
11081 | std::vector<mem_region> |
11082 | remote_target::memory_map () | |
fd79ecee | 11083 | { |
a664f67e | 11084 | std::vector<mem_region> result; |
9018be22 | 11085 | gdb::optional<gdb::char_vector> text |
f6ac5f3d | 11086 | = target_read_stralloc (target_stack, TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11087 | |
11088 | if (text) | |
9018be22 | 11089 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11090 | |
11091 | return result; | |
11092 | } | |
11093 | ||
c906108c | 11094 | static void |
ac88e2de | 11095 | packet_command (const char *args, int from_tty) |
c906108c | 11096 | { |
d01949b6 | 11097 | struct remote_state *rs = get_remote_state (); |
c906108c | 11098 | |
5d93a237 | 11099 | if (!rs->remote_desc) |
8a3fe4f8 | 11100 | error (_("command can only be used with remote target")); |
c906108c | 11101 | |
c5aa993b | 11102 | if (!args) |
8a3fe4f8 | 11103 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11104 | |
11105 | puts_filtered ("sending: "); | |
11106 | print_packet (args); | |
11107 | puts_filtered ("\n"); | |
11108 | putpkt (args); | |
11109 | ||
6d820c5c | 11110 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 11111 | puts_filtered ("received: "); |
6d820c5c | 11112 | print_packet (rs->buf); |
c906108c SS |
11113 | puts_filtered ("\n"); |
11114 | } | |
11115 | ||
11116 | #if 0 | |
23860348 | 11117 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11118 | |
a14ed312 | 11119 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11120 | |
a14ed312 | 11121 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11122 | |
a14ed312 | 11123 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11124 | |
a14ed312 | 11125 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11126 | |
23860348 | 11127 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11128 | |
a14ed312 | 11129 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11130 | |
23860348 | 11131 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11132 | |
a14ed312 | 11133 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11134 | |
a14ed312 | 11135 | static void init_remote_threadtests (void); |
c906108c | 11136 | |
23860348 | 11137 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11138 | |
11139 | static void | |
0b39b52e | 11140 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11141 | { |
11142 | int sample_thread = SAMPLE_THREAD; | |
11143 | ||
a3f17187 | 11144 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11145 | set_general_thread (sample_thread); |
c906108c SS |
11146 | } |
11147 | ||
11148 | ||
11149 | static void | |
0b39b52e | 11150 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11151 | { |
11152 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 11153 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 11154 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 11155 | |
79d7f229 | 11156 | if (remote_thread_alive (ptid)) |
c906108c SS |
11157 | printf_filtered ("PASS: Thread alive test\n"); |
11158 | else | |
11159 | printf_filtered ("FAIL: Thread alive test\n"); | |
11160 | } | |
11161 | ||
23860348 | 11162 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11163 | |
11164 | void | |
fba45db2 | 11165 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11166 | { |
11167 | char hexid[20]; | |
11168 | ||
23860348 | 11169 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
11170 | hexid[16] = 0; |
11171 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11172 | } | |
11173 | ||
11174 | static void | |
0b39b52e | 11175 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11176 | { |
11177 | int startflag = 1; | |
11178 | threadref nextthread; | |
11179 | int done, result_count; | |
11180 | threadref threadlist[3]; | |
11181 | ||
11182 | printf_filtered ("Remote Threadlist test\n"); | |
11183 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11184 | &result_count, &threadlist[0])) | |
11185 | printf_filtered ("FAIL: threadlist test\n"); | |
11186 | else | |
11187 | { | |
11188 | threadref *scan = threadlist; | |
11189 | threadref *limit = scan + result_count; | |
11190 | ||
11191 | while (scan < limit) | |
11192 | output_threadid (" thread ", scan++); | |
11193 | } | |
11194 | } | |
11195 | ||
11196 | void | |
fba45db2 | 11197 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11198 | { |
11199 | output_threadid ("Threadid: ", &info->threadid); | |
11200 | printf_filtered ("Name: %s\n ", info->shortname); | |
11201 | printf_filtered ("State: %s\n", info->display); | |
11202 | printf_filtered ("other: %s\n\n", info->more_display); | |
11203 | } | |
11204 | ||
11205 | int | |
fba45db2 | 11206 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11207 | { |
11208 | int result; | |
11209 | int set; | |
11210 | struct gdb_ext_thread_info threadinfo; | |
11211 | ||
11212 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11213 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11214 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11215 | display_thread_info (&threadinfo); | |
11216 | return result; | |
11217 | } | |
11218 | ||
11219 | static void | |
0b39b52e | 11220 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11221 | { |
11222 | int athread = SAMPLE_THREAD; | |
11223 | threadref thread; | |
11224 | int set; | |
11225 | ||
11226 | int_to_threadref (&thread, athread); | |
11227 | printf_filtered ("Remote Threadinfo test\n"); | |
11228 | if (!get_and_display_threadinfo (&thread)) | |
11229 | printf_filtered ("FAIL cannot get thread info\n"); | |
11230 | } | |
11231 | ||
11232 | static int | |
fba45db2 | 11233 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11234 | { |
11235 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11236 | return get_and_display_threadinfo (ref); | |
11237 | } | |
11238 | ||
11239 | static void | |
0b39b52e | 11240 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11241 | { |
11242 | printf_filtered ("Remote Threadlist update test\n"); | |
11243 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11244 | } | |
11245 | ||
11246 | static void | |
11247 | init_remote_threadtests (void) | |
11248 | { | |
3e43a32a MS |
11249 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11250 | _("Fetch and print the remote list of " | |
11251 | "thread identifiers, one pkt only")); | |
c906108c | 11252 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 11253 | _("Fetch and display info about one thread")); |
c906108c | 11254 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 11255 | _("Test setting to a different thread")); |
c906108c | 11256 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 11257 | _("Iterate through updating all remote thread info")); |
c906108c | 11258 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 11259 | _(" Remote thread alive test ")); |
c906108c SS |
11260 | } |
11261 | ||
11262 | #endif /* 0 */ | |
11263 | ||
f3fb8c85 MS |
11264 | /* Convert a thread ID to a string. Returns the string in a static |
11265 | buffer. */ | |
11266 | ||
f6ac5f3d PA |
11267 | const char * |
11268 | remote_target::pid_to_str (ptid_t ptid) | |
f3fb8c85 | 11269 | { |
79d7f229 | 11270 | static char buf[64]; |
82f73884 | 11271 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11272 | |
7cee1e54 PA |
11273 | if (ptid_equal (ptid, null_ptid)) |
11274 | return normal_pid_to_str (ptid); | |
11275 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
11276 | { |
11277 | /* Printing an inferior target id. */ | |
11278 | ||
11279 | /* When multi-process extensions are off, there's no way in the | |
11280 | remote protocol to know the remote process id, if there's any | |
11281 | at all. There's one exception --- when we're connected with | |
11282 | target extended-remote, and we manually attached to a process | |
11283 | with "attach PID". We don't record anywhere a flag that | |
11284 | allows us to distinguish that case from the case of | |
11285 | connecting with extended-remote and the stub already being | |
11286 | attached to a process, and reporting yes to qAttached, hence | |
11287 | no smart special casing here. */ | |
11288 | if (!remote_multi_process_p (rs)) | |
11289 | { | |
11290 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11291 | return buf; | |
11292 | } | |
11293 | ||
11294 | return normal_pid_to_str (ptid); | |
82f73884 | 11295 | } |
ecd0ada5 | 11296 | else |
79d7f229 | 11297 | { |
ecd0ada5 PA |
11298 | if (ptid_equal (magic_null_ptid, ptid)) |
11299 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11300 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11301 | if (ptid_get_lwp (ptid) == 0) |
11302 | return normal_pid_to_str (ptid); | |
11303 | else | |
11304 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11305 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11306 | else |
11307 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11308 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11309 | return buf; |
11310 | } | |
f3fb8c85 MS |
11311 | } |
11312 | ||
38691318 KB |
11313 | /* Get the address of the thread local variable in OBJFILE which is |
11314 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11315 | ||
f6ac5f3d PA |
11316 | CORE_ADDR |
11317 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11318 | CORE_ADDR offset) | |
38691318 | 11319 | { |
4082afcc | 11320 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11321 | { |
11322 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11323 | char *p = rs->buf; |
82f73884 | 11324 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11325 | enum packet_result result; |
38691318 KB |
11326 | |
11327 | strcpy (p, "qGetTLSAddr:"); | |
11328 | p += strlen (p); | |
82f73884 | 11329 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11330 | *p++ = ','; |
11331 | p += hexnumstr (p, offset); | |
11332 | *p++ = ','; | |
11333 | p += hexnumstr (p, lm); | |
11334 | *p++ = '\0'; | |
11335 | ||
6d820c5c DJ |
11336 | putpkt (rs->buf); |
11337 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11338 | result = packet_ok (rs->buf, |
11339 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11340 | if (result == PACKET_OK) |
38691318 KB |
11341 | { |
11342 | ULONGEST result; | |
11343 | ||
6d820c5c | 11344 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11345 | return result; |
11346 | } | |
571dd617 | 11347 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11348 | throw_error (TLS_GENERIC_ERROR, |
11349 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11350 | else |
109c3e39 AC |
11351 | throw_error (TLS_GENERIC_ERROR, |
11352 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11353 | } |
11354 | else | |
109c3e39 AC |
11355 | throw_error (TLS_GENERIC_ERROR, |
11356 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11357 | /* Not reached. */ |
11358 | return 0; | |
11359 | } | |
11360 | ||
711e434b PM |
11361 | /* Provide thread local base, i.e. Thread Information Block address. |
11362 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11363 | ||
57810aa7 | 11364 | bool |
f6ac5f3d | 11365 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11366 | { |
4082afcc | 11367 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11368 | { |
11369 | struct remote_state *rs = get_remote_state (); | |
11370 | char *p = rs->buf; | |
11371 | char *endp = rs->buf + get_remote_packet_size (); | |
11372 | enum packet_result result; | |
11373 | ||
11374 | strcpy (p, "qGetTIBAddr:"); | |
11375 | p += strlen (p); | |
11376 | p = write_ptid (p, endp, ptid); | |
11377 | *p++ = '\0'; | |
11378 | ||
11379 | putpkt (rs->buf); | |
11380 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11381 | result = packet_ok (rs->buf, | |
11382 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11383 | if (result == PACKET_OK) | |
11384 | { | |
11385 | ULONGEST result; | |
11386 | ||
11387 | unpack_varlen_hex (rs->buf, &result); | |
11388 | if (addr) | |
11389 | *addr = (CORE_ADDR) result; | |
57810aa7 | 11390 | return true; |
711e434b PM |
11391 | } |
11392 | else if (result == PACKET_UNKNOWN) | |
11393 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11394 | else | |
11395 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11396 | } | |
11397 | else | |
11398 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11399 | /* Not reached. */ | |
57810aa7 | 11400 | return false; |
711e434b PM |
11401 | } |
11402 | ||
29709017 DJ |
11403 | /* Support for inferring a target description based on the current |
11404 | architecture and the size of a 'g' packet. While the 'g' packet | |
11405 | can have any size (since optional registers can be left off the | |
11406 | end), some sizes are easily recognizable given knowledge of the | |
11407 | approximate architecture. */ | |
11408 | ||
11409 | struct remote_g_packet_guess | |
11410 | { | |
11411 | int bytes; | |
11412 | const struct target_desc *tdesc; | |
11413 | }; | |
11414 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11415 | DEF_VEC_O(remote_g_packet_guess_s); | |
11416 | ||
11417 | struct remote_g_packet_data | |
11418 | { | |
11419 | VEC(remote_g_packet_guess_s) *guesses; | |
11420 | }; | |
11421 | ||
11422 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11423 | ||
11424 | static void * | |
11425 | remote_g_packet_data_init (struct obstack *obstack) | |
11426 | { | |
11427 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11428 | } | |
11429 | ||
11430 | void | |
11431 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11432 | const struct target_desc *tdesc) | |
11433 | { | |
11434 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11435 | = ((struct remote_g_packet_data *) |
11436 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11437 | struct remote_g_packet_guess new_guess, *guess; |
11438 | int ix; | |
11439 | ||
11440 | gdb_assert (tdesc != NULL); | |
11441 | ||
11442 | for (ix = 0; | |
11443 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11444 | ix++) | |
11445 | if (guess->bytes == bytes) | |
11446 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11447 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11448 | bytes); |
11449 | ||
11450 | new_guess.bytes = bytes; | |
11451 | new_guess.tdesc = tdesc; | |
11452 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11453 | } | |
11454 | ||
d962ef82 DJ |
11455 | /* Return 1 if remote_read_description would do anything on this target |
11456 | and architecture, 0 otherwise. */ | |
11457 | ||
11458 | static int | |
11459 | remote_read_description_p (struct target_ops *target) | |
11460 | { | |
11461 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11462 | = ((struct remote_g_packet_data *) |
11463 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11464 | |
11465 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11466 | return 1; | |
11467 | ||
11468 | return 0; | |
11469 | } | |
11470 | ||
f6ac5f3d PA |
11471 | const struct target_desc * |
11472 | remote_target::read_description () | |
29709017 DJ |
11473 | { |
11474 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11475 | = ((struct remote_g_packet_data *) |
11476 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11477 | |
d962ef82 DJ |
11478 | /* Do not try this during initial connection, when we do not know |
11479 | whether there is a running but stopped thread. */ | |
11480 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
f6ac5f3d | 11481 | return beneath->read_description (); |
d962ef82 | 11482 | |
29709017 DJ |
11483 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11484 | { | |
11485 | struct remote_g_packet_guess *guess; | |
11486 | int ix; | |
11487 | int bytes = send_g_packet (); | |
11488 | ||
11489 | for (ix = 0; | |
11490 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11491 | ix++) | |
11492 | if (guess->bytes == bytes) | |
11493 | return guess->tdesc; | |
11494 | ||
11495 | /* We discard the g packet. A minor optimization would be to | |
11496 | hold on to it, and fill the register cache once we have selected | |
11497 | an architecture, but it's too tricky to do safely. */ | |
11498 | } | |
11499 | ||
f6ac5f3d | 11500 | return beneath->read_description (); |
29709017 DJ |
11501 | } |
11502 | ||
a6b151f1 DJ |
11503 | /* Remote file transfer support. This is host-initiated I/O, not |
11504 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11505 | ||
11506 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11507 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11508 | decrease *LEFT. Otherwise raise an error. */ | |
11509 | ||
11510 | static void | |
a121b7c1 | 11511 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11512 | { |
11513 | int len = strlen (string); | |
11514 | ||
11515 | if (len > *left) | |
11516 | error (_("Packet too long for target.")); | |
11517 | ||
11518 | memcpy (*buffer, string, len); | |
11519 | *buffer += len; | |
11520 | *left -= len; | |
11521 | ||
11522 | /* NUL-terminate the buffer as a convenience, if there is | |
11523 | room. */ | |
11524 | if (*left) | |
11525 | **buffer = '\0'; | |
11526 | } | |
11527 | ||
11528 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11529 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11530 | decrease *LEFT. Otherwise raise an error. */ | |
11531 | ||
11532 | static void | |
11533 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11534 | int len) | |
11535 | { | |
11536 | if (2 * len > *left) | |
11537 | error (_("Packet too long for target.")); | |
11538 | ||
11539 | bin2hex (bytes, *buffer, len); | |
11540 | *buffer += 2 * len; | |
11541 | *left -= 2 * len; | |
11542 | ||
11543 | /* NUL-terminate the buffer as a convenience, if there is | |
11544 | room. */ | |
11545 | if (*left) | |
11546 | **buffer = '\0'; | |
11547 | } | |
11548 | ||
11549 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11550 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11551 | decrease *LEFT. Otherwise raise an error. */ | |
11552 | ||
11553 | static void | |
11554 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11555 | { | |
11556 | int len = hexnumlen (value); | |
11557 | ||
11558 | if (len > *left) | |
11559 | error (_("Packet too long for target.")); | |
11560 | ||
11561 | hexnumstr (*buffer, value); | |
11562 | *buffer += len; | |
11563 | *left -= len; | |
11564 | ||
11565 | /* NUL-terminate the buffer as a convenience, if there is | |
11566 | room. */ | |
11567 | if (*left) | |
11568 | **buffer = '\0'; | |
11569 | } | |
11570 | ||
11571 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11572 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11573 | was included, and *ATTACHMENT to point to the start of the annex | |
11574 | if any. The length of the packet isn't needed here; there may | |
11575 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11576 | ||
11577 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11578 | -1 is returned, the other variables may not be initialized. */ | |
11579 | ||
11580 | static int | |
11581 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11582 | int *remote_errno, char **attachment) | |
11583 | { | |
11584 | char *p, *p2; | |
11585 | ||
11586 | *remote_errno = 0; | |
11587 | *attachment = NULL; | |
11588 | ||
11589 | if (buffer[0] != 'F') | |
11590 | return -1; | |
11591 | ||
11592 | errno = 0; | |
11593 | *retcode = strtol (&buffer[1], &p, 16); | |
11594 | if (errno != 0 || p == &buffer[1]) | |
11595 | return -1; | |
11596 | ||
11597 | /* Check for ",errno". */ | |
11598 | if (*p == ',') | |
11599 | { | |
11600 | errno = 0; | |
11601 | *remote_errno = strtol (p + 1, &p2, 16); | |
11602 | if (errno != 0 || p + 1 == p2) | |
11603 | return -1; | |
11604 | p = p2; | |
11605 | } | |
11606 | ||
11607 | /* Check for ";attachment". If there is no attachment, the | |
11608 | packet should end here. */ | |
11609 | if (*p == ';') | |
11610 | { | |
11611 | *attachment = p + 1; | |
11612 | return 0; | |
11613 | } | |
11614 | else if (*p == '\0') | |
11615 | return 0; | |
11616 | else | |
11617 | return -1; | |
11618 | } | |
11619 | ||
11620 | /* Send a prepared I/O packet to the target and read its response. | |
11621 | The prepared packet is in the global RS->BUF before this function | |
11622 | is called, and the answer is there when we return. | |
11623 | ||
11624 | COMMAND_BYTES is the length of the request to send, which may include | |
11625 | binary data. WHICH_PACKET is the packet configuration to check | |
11626 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11627 | is set to the error number and -1 is returned. Otherwise the value | |
11628 | returned by the function is returned. | |
11629 | ||
11630 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11631 | attachment is expected; an error will be reported if there's a | |
11632 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11633 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11634 | attachment's length. */ | |
11635 | ||
11636 | static int | |
11637 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11638 | int *remote_errno, char **attachment, | |
11639 | int *attachment_len) | |
11640 | { | |
11641 | struct remote_state *rs = get_remote_state (); | |
11642 | int ret, bytes_read; | |
11643 | char *attachment_tmp; | |
11644 | ||
20db9c52 | 11645 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11646 | { |
11647 | *remote_errno = FILEIO_ENOSYS; | |
11648 | return -1; | |
11649 | } | |
11650 | ||
11651 | putpkt_binary (rs->buf, command_bytes); | |
11652 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11653 | ||
11654 | /* If it timed out, something is wrong. Don't try to parse the | |
11655 | buffer. */ | |
11656 | if (bytes_read < 0) | |
11657 | { | |
11658 | *remote_errno = FILEIO_EINVAL; | |
11659 | return -1; | |
11660 | } | |
11661 | ||
11662 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11663 | { | |
11664 | case PACKET_ERROR: | |
11665 | *remote_errno = FILEIO_EINVAL; | |
11666 | return -1; | |
11667 | case PACKET_UNKNOWN: | |
11668 | *remote_errno = FILEIO_ENOSYS; | |
11669 | return -1; | |
11670 | case PACKET_OK: | |
11671 | break; | |
11672 | } | |
11673 | ||
11674 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11675 | &attachment_tmp)) | |
11676 | { | |
11677 | *remote_errno = FILEIO_EINVAL; | |
11678 | return -1; | |
11679 | } | |
11680 | ||
11681 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11682 | if ((attachment_tmp == NULL && attachment != NULL) | |
11683 | || (attachment_tmp != NULL && attachment == NULL)) | |
11684 | { | |
11685 | *remote_errno = FILEIO_EINVAL; | |
11686 | return -1; | |
11687 | } | |
11688 | ||
11689 | /* If an attachment was found, it must point into the packet buffer; | |
11690 | work out how many bytes there were. */ | |
11691 | if (attachment_tmp != NULL) | |
11692 | { | |
11693 | *attachment = attachment_tmp; | |
11694 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11695 | } | |
11696 | ||
11697 | return ret; | |
11698 | } | |
11699 | ||
dd194f6b | 11700 | /* See declaration.h. */ |
80152258 | 11701 | |
dd194f6b PA |
11702 | void |
11703 | readahead_cache::invalidate () | |
80152258 | 11704 | { |
dd194f6b | 11705 | this->fd = -1; |
80152258 PA |
11706 | } |
11707 | ||
dd194f6b | 11708 | /* See declaration.h. */ |
80152258 | 11709 | |
dd194f6b PA |
11710 | void |
11711 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 11712 | { |
dd194f6b PA |
11713 | if (this->fd == fd) |
11714 | this->fd = -1; | |
80152258 PA |
11715 | } |
11716 | ||
15a201c8 GB |
11717 | /* Set the filesystem remote_hostio functions that take FILENAME |
11718 | arguments will use. Return 0 on success, or -1 if an error | |
11719 | occurs (and set *REMOTE_ERRNO). */ | |
11720 | ||
11721 | static int | |
11722 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11723 | { | |
11724 | struct remote_state *rs = get_remote_state (); | |
11725 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11726 | char *p = rs->buf; | |
11727 | int left = get_remote_packet_size () - 1; | |
11728 | char arg[9]; | |
11729 | int ret; | |
11730 | ||
11731 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11732 | return 0; | |
11733 | ||
11734 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11735 | return 0; | |
11736 | ||
11737 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11738 | ||
11739 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11740 | remote_buffer_add_string (&p, &left, arg); | |
11741 | ||
11742 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11743 | remote_errno, NULL, NULL); | |
11744 | ||
11745 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11746 | return 0; | |
11747 | ||
11748 | if (ret == 0) | |
11749 | rs->fs_pid = required_pid; | |
11750 | ||
11751 | return ret; | |
11752 | } | |
11753 | ||
12e2a5fd | 11754 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11755 | |
11756 | static int | |
cd897586 | 11757 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11758 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11759 | int flags, int mode, int warn_if_slow, |
11760 | int *remote_errno) | |
a6b151f1 DJ |
11761 | { |
11762 | struct remote_state *rs = get_remote_state (); | |
11763 | char *p = rs->buf; | |
11764 | int left = get_remote_packet_size () - 1; | |
11765 | ||
4313b8c0 GB |
11766 | if (warn_if_slow) |
11767 | { | |
11768 | static int warning_issued = 0; | |
11769 | ||
11770 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11771 | filename); | |
11772 | ||
11773 | if (!warning_issued) | |
11774 | { | |
11775 | warning (_("File transfers from remote targets can be slow." | |
11776 | " Use \"set sysroot\" to access files locally" | |
11777 | " instead.")); | |
11778 | warning_issued = 1; | |
11779 | } | |
11780 | } | |
11781 | ||
15a201c8 GB |
11782 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11783 | return -1; | |
11784 | ||
a6b151f1 DJ |
11785 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11786 | ||
11787 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11788 | strlen (filename)); | |
11789 | remote_buffer_add_string (&p, &left, ","); | |
11790 | ||
11791 | remote_buffer_add_int (&p, &left, flags); | |
11792 | remote_buffer_add_string (&p, &left, ","); | |
11793 | ||
11794 | remote_buffer_add_int (&p, &left, mode); | |
11795 | ||
11796 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11797 | remote_errno, NULL, NULL); | |
11798 | } | |
11799 | ||
f6ac5f3d PA |
11800 | int |
11801 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
11802 | int flags, int mode, int warn_if_slow, | |
11803 | int *remote_errno) | |
11804 | { | |
11805 | return remote_hostio_open (this, inf, filename, flags, mode, warn_if_slow, | |
11806 | remote_errno); | |
11807 | } | |
11808 | ||
12e2a5fd | 11809 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11810 | |
11811 | static int | |
0d866f62 TT |
11812 | remote_hostio_pwrite (struct target_ops *self, |
11813 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11814 | ULONGEST offset, int *remote_errno) |
11815 | { | |
11816 | struct remote_state *rs = get_remote_state (); | |
11817 | char *p = rs->buf; | |
11818 | int left = get_remote_packet_size (); | |
11819 | int out_len; | |
11820 | ||
dd194f6b | 11821 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 11822 | |
a6b151f1 DJ |
11823 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11824 | ||
11825 | remote_buffer_add_int (&p, &left, fd); | |
11826 | remote_buffer_add_string (&p, &left, ","); | |
11827 | ||
11828 | remote_buffer_add_int (&p, &left, offset); | |
11829 | remote_buffer_add_string (&p, &left, ","); | |
11830 | ||
124e13d9 | 11831 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11832 | get_remote_packet_size () - (p - rs->buf)); |
11833 | ||
11834 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11835 | remote_errno, NULL, NULL); | |
11836 | } | |
11837 | ||
f6ac5f3d PA |
11838 | int |
11839 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11840 | ULONGEST offset, int *remote_errno) | |
11841 | { | |
11842 | return remote_hostio_pwrite (this, fd, write_buf, len, offset, remote_errno); | |
11843 | } | |
11844 | ||
80152258 PA |
11845 | /* Helper for the implementation of to_fileio_pread. Read the file |
11846 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11847 | |
11848 | static int | |
80152258 PA |
11849 | remote_hostio_pread_vFile (struct target_ops *self, |
11850 | int fd, gdb_byte *read_buf, int len, | |
11851 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11852 | { |
11853 | struct remote_state *rs = get_remote_state (); | |
11854 | char *p = rs->buf; | |
11855 | char *attachment; | |
11856 | int left = get_remote_packet_size (); | |
11857 | int ret, attachment_len; | |
11858 | int read_len; | |
11859 | ||
11860 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11861 | ||
11862 | remote_buffer_add_int (&p, &left, fd); | |
11863 | remote_buffer_add_string (&p, &left, ","); | |
11864 | ||
11865 | remote_buffer_add_int (&p, &left, len); | |
11866 | remote_buffer_add_string (&p, &left, ","); | |
11867 | ||
11868 | remote_buffer_add_int (&p, &left, offset); | |
11869 | ||
11870 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11871 | remote_errno, &attachment, | |
11872 | &attachment_len); | |
11873 | ||
11874 | if (ret < 0) | |
11875 | return ret; | |
11876 | ||
bc20a4af | 11877 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11878 | read_buf, len); |
11879 | if (read_len != ret) | |
11880 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11881 | ||
11882 | return ret; | |
11883 | } | |
11884 | ||
dd194f6b | 11885 | /* See declaration.h. */ |
80152258 | 11886 | |
dd194f6b PA |
11887 | int |
11888 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
11889 | ULONGEST offset) | |
80152258 | 11890 | { |
dd194f6b PA |
11891 | if (this->fd == fd |
11892 | && this->offset <= offset | |
11893 | && offset < this->offset + this->bufsize) | |
80152258 | 11894 | { |
dd194f6b | 11895 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
11896 | |
11897 | if (offset + len > max) | |
11898 | len = max - offset; | |
11899 | ||
dd194f6b | 11900 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
11901 | return len; |
11902 | } | |
11903 | ||
11904 | return 0; | |
11905 | } | |
11906 | ||
11907 | /* Implementation of to_fileio_pread. */ | |
11908 | ||
11909 | static int | |
11910 | remote_hostio_pread (struct target_ops *self, | |
11911 | int fd, gdb_byte *read_buf, int len, | |
11912 | ULONGEST offset, int *remote_errno) | |
11913 | { | |
11914 | int ret; | |
11915 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 11916 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 11917 | |
dd194f6b | 11918 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
11919 | if (ret > 0) |
11920 | { | |
11921 | cache->hit_count++; | |
11922 | ||
11923 | if (remote_debug) | |
11924 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11925 | pulongest (cache->hit_count)); | |
11926 | return ret; | |
11927 | } | |
11928 | ||
11929 | cache->miss_count++; | |
11930 | if (remote_debug) | |
11931 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11932 | pulongest (cache->miss_count)); | |
11933 | ||
11934 | cache->fd = fd; | |
11935 | cache->offset = offset; | |
11936 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11937 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11938 | |
11939 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11940 | cache->offset, remote_errno); | |
11941 | if (ret <= 0) | |
11942 | { | |
dd194f6b | 11943 | cache->invalidate_fd (fd); |
80152258 PA |
11944 | return ret; |
11945 | } | |
11946 | ||
11947 | cache->bufsize = ret; | |
dd194f6b | 11948 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
11949 | } |
11950 | ||
f6ac5f3d PA |
11951 | int |
11952 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
11953 | ULONGEST offset, int *remote_errno) | |
11954 | { | |
11955 | return remote_hostio_pread (this, fd, read_buf, len, offset, remote_errno); | |
11956 | } | |
11957 | ||
12e2a5fd | 11958 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11959 | |
11960 | static int | |
df39ea25 | 11961 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11962 | { |
11963 | struct remote_state *rs = get_remote_state (); | |
11964 | char *p = rs->buf; | |
11965 | int left = get_remote_packet_size () - 1; | |
11966 | ||
dd194f6b | 11967 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 11968 | |
a6b151f1 DJ |
11969 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11970 | ||
11971 | remote_buffer_add_int (&p, &left, fd); | |
11972 | ||
11973 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11974 | remote_errno, NULL, NULL); | |
11975 | } | |
11976 | ||
f6ac5f3d PA |
11977 | int |
11978 | remote_target::fileio_close (int fd, int *remote_errno) | |
11979 | { | |
11980 | return remote_hostio_close (this, fd, remote_errno); | |
11981 | } | |
11982 | ||
12e2a5fd | 11983 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11984 | |
11985 | static int | |
dbbca37d | 11986 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11987 | struct inferior *inf, const char *filename, |
11988 | int *remote_errno) | |
a6b151f1 DJ |
11989 | { |
11990 | struct remote_state *rs = get_remote_state (); | |
11991 | char *p = rs->buf; | |
11992 | int left = get_remote_packet_size () - 1; | |
11993 | ||
15a201c8 GB |
11994 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11995 | return -1; | |
11996 | ||
a6b151f1 DJ |
11997 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11998 | ||
11999 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12000 | strlen (filename)); | |
12001 | ||
12002 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
12003 | remote_errno, NULL, NULL); | |
12004 | } | |
12005 | ||
f6ac5f3d PA |
12006 | int |
12007 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12008 | int *remote_errno) | |
12009 | { | |
12010 | return remote_hostio_unlink (this, inf, filename, remote_errno); | |
12011 | } | |
12012 | ||
12e2a5fd | 12013 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12014 | |
f6ac5f3d PA |
12015 | gdb::optional<std::string> |
12016 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12017 | int *remote_errno) | |
b9e7b9c3 UW |
12018 | { |
12019 | struct remote_state *rs = get_remote_state (); | |
12020 | char *p = rs->buf; | |
12021 | char *attachment; | |
12022 | int left = get_remote_packet_size (); | |
12023 | int len, attachment_len; | |
12024 | int read_len; | |
b9e7b9c3 | 12025 | |
15a201c8 | 12026 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12027 | return {}; |
15a201c8 | 12028 | |
b9e7b9c3 UW |
12029 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12030 | ||
12031 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12032 | strlen (filename)); | |
12033 | ||
12034 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
12035 | remote_errno, &attachment, | |
12036 | &attachment_len); | |
12037 | ||
12038 | if (len < 0) | |
e0d3522b | 12039 | return {}; |
b9e7b9c3 | 12040 | |
e0d3522b | 12041 | std::string ret (len, '\0'); |
b9e7b9c3 | 12042 | |
bc20a4af | 12043 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12044 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12045 | if (read_len != len) |
12046 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12047 | ||
b9e7b9c3 UW |
12048 | return ret; |
12049 | } | |
12050 | ||
12e2a5fd | 12051 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12052 | |
f6ac5f3d PA |
12053 | int |
12054 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12055 | { |
12056 | struct remote_state *rs = get_remote_state (); | |
12057 | char *p = rs->buf; | |
12058 | int left = get_remote_packet_size (); | |
12059 | int attachment_len, ret; | |
12060 | char *attachment; | |
12061 | struct fio_stat fst; | |
12062 | int read_len; | |
12063 | ||
464b0089 GB |
12064 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12065 | ||
12066 | remote_buffer_add_int (&p, &left, fd); | |
12067 | ||
12068 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
12069 | remote_errno, &attachment, | |
12070 | &attachment_len); | |
12071 | if (ret < 0) | |
0a93529c | 12072 | { |
464b0089 GB |
12073 | if (*remote_errno != FILEIO_ENOSYS) |
12074 | return ret; | |
12075 | ||
0a93529c GB |
12076 | /* Strictly we should return -1, ENOSYS here, but when |
12077 | "set sysroot remote:" was implemented in August 2008 | |
12078 | BFD's need for a stat function was sidestepped with | |
12079 | this hack. This was not remedied until March 2015 | |
12080 | so we retain the previous behavior to avoid breaking | |
12081 | compatibility. | |
12082 | ||
12083 | Note that the memset is a March 2015 addition; older | |
12084 | GDBs set st_size *and nothing else* so the structure | |
12085 | would have garbage in all other fields. This might | |
12086 | break something but retaining the previous behavior | |
12087 | here would be just too wrong. */ | |
12088 | ||
12089 | memset (st, 0, sizeof (struct stat)); | |
12090 | st->st_size = INT_MAX; | |
12091 | return 0; | |
12092 | } | |
12093 | ||
0a93529c GB |
12094 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12095 | (gdb_byte *) &fst, sizeof (fst)); | |
12096 | ||
12097 | if (read_len != ret) | |
12098 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12099 | ||
12100 | if (read_len != sizeof (fst)) | |
12101 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12102 | read_len, (int) sizeof (fst)); | |
12103 | ||
12104 | remote_fileio_to_host_stat (&fst, st); | |
12105 | ||
12106 | return 0; | |
12107 | } | |
12108 | ||
12e2a5fd | 12109 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12110 | |
57810aa7 | 12111 | bool |
f6ac5f3d | 12112 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12113 | { |
12114 | /* Valgrind GDB presents itself as a remote target but works | |
12115 | on the local filesystem: it does not implement remote get | |
12116 | and users are not expected to set a sysroot. To handle | |
12117 | this case we treat the remote filesystem as local if the | |
12118 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12119 | does not support vFile:open. */ | |
a3be80c3 | 12120 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12121 | { |
12122 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12123 | ||
12124 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12125 | { | |
12126 | int fd, remote_errno; | |
12127 | ||
12128 | /* Try opening a file to probe support. The supplied | |
12129 | filename is irrelevant, we only care about whether | |
12130 | the stub recognizes the packet or not. */ | |
f6ac5f3d | 12131 | fd = remote_hostio_open (this, NULL, "just probing", |
4313b8c0 | 12132 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12133 | &remote_errno); |
12134 | ||
12135 | if (fd >= 0) | |
f6ac5f3d | 12136 | remote_hostio_close (this, fd, &remote_errno); |
e3dd7556 GB |
12137 | |
12138 | ps = packet_support (PACKET_vFile_open); | |
12139 | } | |
12140 | ||
12141 | if (ps == PACKET_DISABLE) | |
12142 | { | |
12143 | static int warning_issued = 0; | |
12144 | ||
12145 | if (!warning_issued) | |
12146 | { | |
12147 | warning (_("remote target does not support file" | |
12148 | " transfer, attempting to access files" | |
12149 | " from local filesystem.")); | |
12150 | warning_issued = 1; | |
12151 | } | |
12152 | ||
57810aa7 | 12153 | return true; |
e3dd7556 GB |
12154 | } |
12155 | } | |
12156 | ||
57810aa7 | 12157 | return false; |
e3dd7556 GB |
12158 | } |
12159 | ||
a6b151f1 DJ |
12160 | static int |
12161 | remote_fileio_errno_to_host (int errnum) | |
12162 | { | |
12163 | switch (errnum) | |
12164 | { | |
12165 | case FILEIO_EPERM: | |
12166 | return EPERM; | |
12167 | case FILEIO_ENOENT: | |
12168 | return ENOENT; | |
12169 | case FILEIO_EINTR: | |
12170 | return EINTR; | |
12171 | case FILEIO_EIO: | |
12172 | return EIO; | |
12173 | case FILEIO_EBADF: | |
12174 | return EBADF; | |
12175 | case FILEIO_EACCES: | |
12176 | return EACCES; | |
12177 | case FILEIO_EFAULT: | |
12178 | return EFAULT; | |
12179 | case FILEIO_EBUSY: | |
12180 | return EBUSY; | |
12181 | case FILEIO_EEXIST: | |
12182 | return EEXIST; | |
12183 | case FILEIO_ENODEV: | |
12184 | return ENODEV; | |
12185 | case FILEIO_ENOTDIR: | |
12186 | return ENOTDIR; | |
12187 | case FILEIO_EISDIR: | |
12188 | return EISDIR; | |
12189 | case FILEIO_EINVAL: | |
12190 | return EINVAL; | |
12191 | case FILEIO_ENFILE: | |
12192 | return ENFILE; | |
12193 | case FILEIO_EMFILE: | |
12194 | return EMFILE; | |
12195 | case FILEIO_EFBIG: | |
12196 | return EFBIG; | |
12197 | case FILEIO_ENOSPC: | |
12198 | return ENOSPC; | |
12199 | case FILEIO_ESPIPE: | |
12200 | return ESPIPE; | |
12201 | case FILEIO_EROFS: | |
12202 | return EROFS; | |
12203 | case FILEIO_ENOSYS: | |
12204 | return ENOSYS; | |
12205 | case FILEIO_ENAMETOOLONG: | |
12206 | return ENAMETOOLONG; | |
12207 | } | |
12208 | return -1; | |
12209 | } | |
12210 | ||
12211 | static char * | |
12212 | remote_hostio_error (int errnum) | |
12213 | { | |
12214 | int host_error = remote_fileio_errno_to_host (errnum); | |
12215 | ||
12216 | if (host_error == -1) | |
12217 | error (_("Unknown remote I/O error %d"), errnum); | |
12218 | else | |
12219 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12220 | } | |
12221 | ||
440b7aec PA |
12222 | /* A RAII wrapper around a remote file descriptor. */ |
12223 | ||
12224 | class scoped_remote_fd | |
a6b151f1 | 12225 | { |
440b7aec PA |
12226 | public: |
12227 | explicit scoped_remote_fd (int fd) | |
12228 | : m_fd (fd) | |
12229 | { | |
12230 | } | |
a6b151f1 | 12231 | |
440b7aec PA |
12232 | ~scoped_remote_fd () |
12233 | { | |
12234 | if (m_fd != -1) | |
12235 | { | |
12236 | try | |
12237 | { | |
12238 | int remote_errno; | |
12239 | remote_hostio_close (find_target_at (process_stratum), | |
12240 | m_fd, &remote_errno); | |
12241 | } | |
12242 | catch (...) | |
12243 | { | |
12244 | /* Swallow exception before it escapes the dtor. If | |
12245 | something goes wrong, likely the connection is gone, | |
12246 | and there's nothing else that can be done. */ | |
12247 | } | |
12248 | } | |
12249 | } | |
12250 | ||
12251 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12252 | ||
12253 | /* Release ownership of the file descriptor, and return it. */ | |
12254 | int release () noexcept | |
12255 | { | |
12256 | int fd = m_fd; | |
12257 | m_fd = -1; | |
12258 | return fd; | |
12259 | } | |
12260 | ||
12261 | /* Return the owned file descriptor. */ | |
12262 | int get () const noexcept | |
12263 | { | |
12264 | return m_fd; | |
12265 | } | |
12266 | ||
12267 | private: | |
12268 | /* The owned remote I/O file descriptor. */ | |
12269 | int m_fd; | |
12270 | }; | |
a6b151f1 DJ |
12271 | |
12272 | void | |
12273 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
12274 | { | |
440b7aec PA |
12275 | struct cleanup *back_to; |
12276 | int retcode, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
12277 | gdb_byte *buffer; |
12278 | int bytes_in_buffer; | |
12279 | int saw_eof; | |
12280 | ULONGEST offset; | |
5d93a237 | 12281 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12282 | |
5d93a237 | 12283 | if (!rs->remote_desc) |
a6b151f1 DJ |
12284 | error (_("command can only be used with remote target")); |
12285 | ||
d419f42d | 12286 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12287 | if (file == NULL) |
12288 | perror_with_name (local_file); | |
a6b151f1 | 12289 | |
440b7aec PA |
12290 | scoped_remote_fd fd |
12291 | (remote_hostio_open (find_target_at (process_stratum), NULL, | |
12292 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12293 | | FILEIO_O_TRUNC), | |
12294 | 0700, 0, &remote_errno)); | |
12295 | if (fd.get () == -1) | |
a6b151f1 DJ |
12296 | remote_hostio_error (remote_errno); |
12297 | ||
12298 | /* Send up to this many bytes at once. They won't all fit in the | |
12299 | remote packet limit, so we'll transfer slightly fewer. */ | |
12300 | io_size = get_remote_packet_size (); | |
224c3ddb | 12301 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12302 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 | 12303 | |
a6b151f1 DJ |
12304 | bytes_in_buffer = 0; |
12305 | saw_eof = 0; | |
12306 | offset = 0; | |
12307 | while (bytes_in_buffer || !saw_eof) | |
12308 | { | |
12309 | if (!saw_eof) | |
12310 | { | |
3e43a32a MS |
12311 | bytes = fread (buffer + bytes_in_buffer, 1, |
12312 | io_size - bytes_in_buffer, | |
d419f42d | 12313 | file.get ()); |
a6b151f1 DJ |
12314 | if (bytes == 0) |
12315 | { | |
d419f42d | 12316 | if (ferror (file.get ())) |
a6b151f1 DJ |
12317 | error (_("Error reading %s."), local_file); |
12318 | else | |
12319 | { | |
12320 | /* EOF. Unless there is something still in the | |
12321 | buffer from the last iteration, we are done. */ | |
12322 | saw_eof = 1; | |
12323 | if (bytes_in_buffer == 0) | |
12324 | break; | |
12325 | } | |
12326 | } | |
12327 | } | |
12328 | else | |
12329 | bytes = 0; | |
12330 | ||
12331 | bytes += bytes_in_buffer; | |
12332 | bytes_in_buffer = 0; | |
12333 | ||
0d866f62 | 12334 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
440b7aec | 12335 | fd.get (), buffer, bytes, |
3e43a32a | 12336 | offset, &remote_errno); |
a6b151f1 DJ |
12337 | |
12338 | if (retcode < 0) | |
12339 | remote_hostio_error (remote_errno); | |
12340 | else if (retcode == 0) | |
12341 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12342 | else if (retcode < bytes) | |
12343 | { | |
12344 | /* Short write. Save the rest of the read data for the next | |
12345 | write. */ | |
12346 | bytes_in_buffer = bytes - retcode; | |
12347 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
12348 | } | |
12349 | ||
12350 | offset += retcode; | |
12351 | } | |
12352 | ||
440b7aec PA |
12353 | if (remote_hostio_close (find_target_at (process_stratum), |
12354 | fd.release (), &remote_errno)) | |
a6b151f1 DJ |
12355 | remote_hostio_error (remote_errno); |
12356 | ||
12357 | if (from_tty) | |
12358 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
12359 | do_cleanups (back_to); | |
12360 | } | |
12361 | ||
12362 | void | |
12363 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
12364 | { | |
440b7aec PA |
12365 | struct cleanup *back_to; |
12366 | int remote_errno, bytes, io_size; | |
a6b151f1 DJ |
12367 | gdb_byte *buffer; |
12368 | ULONGEST offset; | |
5d93a237 | 12369 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12370 | |
5d93a237 | 12371 | if (!rs->remote_desc) |
a6b151f1 DJ |
12372 | error (_("command can only be used with remote target")); |
12373 | ||
440b7aec PA |
12374 | scoped_remote_fd fd |
12375 | (remote_hostio_open (find_target_at (process_stratum), NULL, | |
12376 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12377 | &remote_errno)); | |
12378 | if (fd.get () == -1) | |
a6b151f1 DJ |
12379 | remote_hostio_error (remote_errno); |
12380 | ||
d419f42d | 12381 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12382 | if (file == NULL) |
12383 | perror_with_name (local_file); | |
a6b151f1 DJ |
12384 | |
12385 | /* Send up to this many bytes at once. They won't all fit in the | |
12386 | remote packet limit, so we'll transfer slightly fewer. */ | |
12387 | io_size = get_remote_packet_size (); | |
224c3ddb | 12388 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12389 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 | 12390 | |
a6b151f1 DJ |
12391 | offset = 0; |
12392 | while (1) | |
12393 | { | |
a3be983c | 12394 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
440b7aec PA |
12395 | fd.get (), buffer, io_size, offset, |
12396 | &remote_errno); | |
a6b151f1 DJ |
12397 | if (bytes == 0) |
12398 | /* Success, but no bytes, means end-of-file. */ | |
12399 | break; | |
12400 | if (bytes == -1) | |
12401 | remote_hostio_error (remote_errno); | |
12402 | ||
12403 | offset += bytes; | |
12404 | ||
d419f42d | 12405 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12406 | if (bytes == 0) |
12407 | perror_with_name (local_file); | |
12408 | } | |
12409 | ||
440b7aec PA |
12410 | if (remote_hostio_close (find_target_at (process_stratum), |
12411 | fd.release (), &remote_errno)) | |
a6b151f1 DJ |
12412 | remote_hostio_error (remote_errno); |
12413 | ||
12414 | if (from_tty) | |
12415 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12416 | do_cleanups (back_to); | |
12417 | } | |
12418 | ||
12419 | void | |
12420 | remote_file_delete (const char *remote_file, int from_tty) | |
12421 | { | |
12422 | int retcode, remote_errno; | |
5d93a237 | 12423 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12424 | |
5d93a237 | 12425 | if (!rs->remote_desc) |
a6b151f1 DJ |
12426 | error (_("command can only be used with remote target")); |
12427 | ||
dbbca37d | 12428 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12429 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12430 | if (retcode == -1) |
12431 | remote_hostio_error (remote_errno); | |
12432 | ||
12433 | if (from_tty) | |
12434 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12435 | } | |
12436 | ||
12437 | static void | |
ac88e2de | 12438 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12439 | { |
d1a41061 PP |
12440 | if (args == NULL) |
12441 | error_no_arg (_("file to put")); | |
12442 | ||
773a1edc | 12443 | gdb_argv argv (args); |
a6b151f1 DJ |
12444 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12445 | error (_("Invalid parameters to remote put")); | |
12446 | ||
12447 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12448 | } |
12449 | ||
12450 | static void | |
ac88e2de | 12451 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12452 | { |
d1a41061 PP |
12453 | if (args == NULL) |
12454 | error_no_arg (_("file to get")); | |
12455 | ||
773a1edc | 12456 | gdb_argv argv (args); |
a6b151f1 DJ |
12457 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12458 | error (_("Invalid parameters to remote get")); | |
12459 | ||
12460 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12461 | } |
12462 | ||
12463 | static void | |
ac88e2de | 12464 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12465 | { |
d1a41061 PP |
12466 | if (args == NULL) |
12467 | error_no_arg (_("file to delete")); | |
12468 | ||
773a1edc | 12469 | gdb_argv argv (args); |
a6b151f1 DJ |
12470 | if (argv[0] == NULL || argv[1] != NULL) |
12471 | error (_("Invalid parameters to remote delete")); | |
12472 | ||
12473 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12474 | } |
12475 | ||
12476 | static void | |
981a3fb3 | 12477 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12478 | { |
635c7e8a | 12479 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12480 | } |
12481 | ||
57810aa7 | 12482 | bool |
f6ac5f3d | 12483 | remote_target::can_execute_reverse () |
b2175913 | 12484 | { |
4082afcc PA |
12485 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12486 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12487 | return true; |
40ab02ce | 12488 | else |
57810aa7 | 12489 | return false; |
b2175913 MS |
12490 | } |
12491 | ||
57810aa7 | 12492 | bool |
f6ac5f3d | 12493 | remote_target::supports_non_stop () |
74531fed | 12494 | { |
57810aa7 | 12495 | return true; |
74531fed PA |
12496 | } |
12497 | ||
57810aa7 | 12498 | bool |
f6ac5f3d | 12499 | remote_target::supports_disable_randomization () |
03583c20 UW |
12500 | { |
12501 | /* Only supported in extended mode. */ | |
57810aa7 | 12502 | return false; |
03583c20 UW |
12503 | } |
12504 | ||
57810aa7 | 12505 | bool |
f6ac5f3d | 12506 | remote_target::supports_multi_process () |
8a305172 PA |
12507 | { |
12508 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12509 | |
8020350c | 12510 | return remote_multi_process_p (rs); |
8a305172 PA |
12511 | } |
12512 | ||
70221824 | 12513 | static int |
f6ac5f3d | 12514 | remote_supports_cond_tracepoints () |
782b2b07 | 12515 | { |
4082afcc | 12516 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12517 | } |
12518 | ||
57810aa7 | 12519 | bool |
f6ac5f3d | 12520 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12521 | { |
4082afcc | 12522 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12523 | } |
12524 | ||
70221824 | 12525 | static int |
f6ac5f3d | 12526 | remote_supports_fast_tracepoints () |
7a697b8d | 12527 | { |
4082afcc | 12528 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12529 | } |
12530 | ||
0fb4aa4b | 12531 | static int |
f6ac5f3d | 12532 | remote_supports_static_tracepoints () |
0fb4aa4b | 12533 | { |
4082afcc | 12534 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12535 | } |
12536 | ||
1e4d1764 | 12537 | static int |
f6ac5f3d | 12538 | remote_supports_install_in_trace () |
1e4d1764 | 12539 | { |
4082afcc | 12540 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12541 | } |
12542 | ||
57810aa7 | 12543 | bool |
f6ac5f3d | 12544 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12545 | { |
4082afcc PA |
12546 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12547 | == PACKET_ENABLE); | |
d248b706 KY |
12548 | } |
12549 | ||
57810aa7 | 12550 | bool |
f6ac5f3d | 12551 | remote_target::supports_string_tracing () |
3065dfb6 | 12552 | { |
4082afcc | 12553 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12554 | } |
12555 | ||
57810aa7 | 12556 | bool |
f6ac5f3d | 12557 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12558 | { |
4082afcc | 12559 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12560 | } |
12561 | ||
f6ac5f3d PA |
12562 | void |
12563 | remote_target::trace_init () | |
35b1e5cc | 12564 | { |
b6bb3468 PA |
12565 | struct remote_state *rs = get_remote_state (); |
12566 | ||
35b1e5cc | 12567 | putpkt ("QTinit"); |
b6bb3468 PA |
12568 | remote_get_noisy_reply (); |
12569 | if (strcmp (rs->buf, "OK") != 0) | |
35b1e5cc SS |
12570 | error (_("Target does not support this command.")); |
12571 | } | |
12572 | ||
409873ef SS |
12573 | /* Recursive routine to walk through command list including loops, and |
12574 | download packets for each command. */ | |
12575 | ||
12576 | static void | |
12577 | remote_download_command_source (int num, ULONGEST addr, | |
12578 | struct command_line *cmds) | |
12579 | { | |
12580 | struct remote_state *rs = get_remote_state (); | |
12581 | struct command_line *cmd; | |
12582 | ||
12583 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12584 | { | |
0df8b418 | 12585 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12586 | strcpy (rs->buf, "QTDPsrc:"); |
12587 | encode_source_string (num, addr, "cmd", cmd->line, | |
12588 | rs->buf + strlen (rs->buf), | |
12589 | rs->buf_size - strlen (rs->buf)); | |
12590 | putpkt (rs->buf); | |
b6bb3468 PA |
12591 | remote_get_noisy_reply (); |
12592 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12593 | warning (_("Target does not support source download.")); |
12594 | ||
12595 | if (cmd->control_type == while_control | |
12596 | || cmd->control_type == while_stepping_control) | |
12597 | { | |
12973681 | 12598 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12599 | |
0df8b418 | 12600 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12601 | strcpy (rs->buf, "QTDPsrc:"); |
12602 | encode_source_string (num, addr, "cmd", "end", | |
12603 | rs->buf + strlen (rs->buf), | |
12604 | rs->buf_size - strlen (rs->buf)); | |
12605 | putpkt (rs->buf); | |
b6bb3468 PA |
12606 | remote_get_noisy_reply (); |
12607 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12608 | warning (_("Target does not support source download.")); |
12609 | } | |
12610 | } | |
12611 | } | |
12612 | ||
f6ac5f3d PA |
12613 | void |
12614 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc | 12615 | { |
bba74b36 | 12616 | #define BUF_SIZE 2048 |
e8ba3115 | 12617 | |
35b1e5cc | 12618 | CORE_ADDR tpaddr; |
409873ef | 12619 | char addrbuf[40]; |
bba74b36 | 12620 | char buf[BUF_SIZE]; |
b44ec619 SM |
12621 | std::vector<std::string> tdp_actions; |
12622 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12623 | char *pkt; |
e8ba3115 | 12624 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12625 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12626 | struct remote_state *rs = get_remote_state (); |
35b1e5cc | 12627 | |
dc673c81 | 12628 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12629 | |
12630 | tpaddr = loc->address; | |
12631 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12632 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12633 | addrbuf, /* address */ | |
12634 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12635 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12636 | /* Fast tracepoints are mostly handled by the target, but we can |
12637 | tell the target how big of an instruction block should be moved | |
12638 | around. */ | |
12639 | if (b->type == bp_fast_tracepoint) | |
12640 | { | |
12641 | /* Only test for support at download time; we may not know | |
12642 | target capabilities at definition time. */ | |
12643 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12644 | { |
6b940e6a PL |
12645 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12646 | NULL)) | |
bba74b36 | 12647 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12648 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12649 | else |
e8ba3115 YQ |
12650 | /* If it passed validation at definition but fails now, |
12651 | something is very wrong. */ | |
12652 | internal_error (__FILE__, __LINE__, | |
12653 | _("Fast tracepoint not " | |
12654 | "valid during download")); | |
35b1e5cc | 12655 | } |
e8ba3115 YQ |
12656 | else |
12657 | /* Fast tracepoints are functionally identical to regular | |
12658 | tracepoints, so don't take lack of support as a reason to | |
12659 | give up on the trace run. */ | |
12660 | warning (_("Target does not support fast tracepoints, " | |
12661 | "downloading %d as regular tracepoint"), b->number); | |
12662 | } | |
12663 | else if (b->type == bp_static_tracepoint) | |
12664 | { | |
12665 | /* Only test for support at download time; we may not know | |
12666 | target capabilities at definition time. */ | |
12667 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12668 | { |
e8ba3115 | 12669 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12670 | |
e8ba3115 YQ |
12671 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12672 | strcat (buf, ":S"); | |
0fb4aa4b | 12673 | else |
e8ba3115 | 12674 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12675 | } |
e8ba3115 YQ |
12676 | else |
12677 | /* Fast tracepoints are functionally identical to regular | |
12678 | tracepoints, so don't take lack of support as a reason | |
12679 | to give up on the trace run. */ | |
12680 | error (_("Target does not support static tracepoints")); | |
12681 | } | |
12682 | /* If the tracepoint has a conditional, make it into an agent | |
12683 | expression and append to the definition. */ | |
12684 | if (loc->cond) | |
12685 | { | |
12686 | /* Only test support at download time, we may not know target | |
12687 | capabilities at definition time. */ | |
12688 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12689 | { |
833177a4 | 12690 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12691 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12692 | aexpr->len); | |
e8ba3115 | 12693 | pkt = buf + strlen (buf); |
b44ec619 | 12694 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12695 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12696 | *pkt = '\0'; | |
35b1e5cc | 12697 | } |
e8ba3115 YQ |
12698 | else |
12699 | warning (_("Target does not support conditional tracepoints, " | |
12700 | "ignoring tp %d cond"), b->number); | |
12701 | } | |
35b1e5cc | 12702 | |
d9b3f62e | 12703 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12704 | strcat (buf, "-"); |
12705 | putpkt (buf); | |
b6bb3468 PA |
12706 | remote_get_noisy_reply (); |
12707 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12708 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12709 | |
e8ba3115 | 12710 | /* do_single_steps (t); */ |
b44ec619 SM |
12711 | for (auto action_it = tdp_actions.begin (); |
12712 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12713 | { |
b44ec619 SM |
12714 | QUIT; /* Allow user to bail out with ^C. */ |
12715 | ||
12716 | bool has_more = (action_it != tdp_actions.end () | |
12717 | || !stepping_actions.empty ()); | |
12718 | ||
12719 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", | |
12720 | b->number, addrbuf, /* address */ | |
12721 | action_it->c_str (), | |
12722 | has_more ? '-' : 0); | |
12723 | putpkt (buf); | |
12724 | remote_get_noisy_reply (); | |
12725 | if (strcmp (rs->buf, "OK")) | |
12726 | error (_("Error on target while setting tracepoints.")); | |
e8ba3115 | 12727 | } |
409873ef | 12728 | |
b44ec619 SM |
12729 | for (auto action_it = stepping_actions.begin (); |
12730 | action_it != stepping_actions.end (); action_it++) | |
12731 | { | |
12732 | QUIT; /* Allow user to bail out with ^C. */ | |
12733 | ||
12734 | bool is_first = action_it == stepping_actions.begin (); | |
12735 | bool has_more = action_it != stepping_actions.end (); | |
12736 | ||
12737 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", | |
12738 | b->number, addrbuf, /* address */ | |
12739 | is_first ? "S" : "", | |
12740 | action_it->c_str (), | |
12741 | has_more ? "-" : ""); | |
12742 | putpkt (buf); | |
12743 | remote_get_noisy_reply (); | |
12744 | if (strcmp (rs->buf, "OK")) | |
12745 | error (_("Error on target while setting tracepoints.")); | |
12746 | } | |
12747 | ||
4082afcc | 12748 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12749 | { |
f00aae0f | 12750 | if (b->location != NULL) |
409873ef | 12751 | { |
e8ba3115 | 12752 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12753 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12754 | event_location_to_string (b->location.get ()), |
f00aae0f | 12755 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 | 12756 | putpkt (buf); |
b6bb3468 PA |
12757 | remote_get_noisy_reply (); |
12758 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12759 | warning (_("Target does not support source download.")); |
409873ef | 12760 | } |
e8ba3115 YQ |
12761 | if (b->cond_string) |
12762 | { | |
12763 | strcpy (buf, "QTDPsrc:"); | |
12764 | encode_source_string (b->number, loc->address, | |
12765 | "cond", b->cond_string, buf + strlen (buf), | |
12766 | 2048 - strlen (buf)); | |
12767 | putpkt (buf); | |
b6bb3468 PA |
12768 | remote_get_noisy_reply (); |
12769 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 YQ |
12770 | warning (_("Target does not support source download.")); |
12771 | } | |
12772 | remote_download_command_source (b->number, loc->address, | |
12773 | breakpoint_commands (b)); | |
35b1e5cc | 12774 | } |
35b1e5cc SS |
12775 | } |
12776 | ||
57810aa7 | 12777 | bool |
f6ac5f3d | 12778 | remote_target::can_download_tracepoint () |
1e4d1764 | 12779 | { |
1e51243a PA |
12780 | struct remote_state *rs = get_remote_state (); |
12781 | struct trace_status *ts; | |
12782 | int status; | |
12783 | ||
12784 | /* Don't try to install tracepoints until we've relocated our | |
12785 | symbols, and fetched and merged the target's tracepoint list with | |
12786 | ours. */ | |
12787 | if (rs->starting_up) | |
57810aa7 | 12788 | return false; |
1e51243a PA |
12789 | |
12790 | ts = current_trace_status (); | |
f6ac5f3d | 12791 | status = get_trace_status (ts); |
1e4d1764 YQ |
12792 | |
12793 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 12794 | return false; |
1e4d1764 YQ |
12795 | |
12796 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12797 | installing tracepoint in trace, we have to return. */ | |
12798 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 12799 | return false; |
1e4d1764 | 12800 | |
57810aa7 | 12801 | return true; |
1e4d1764 YQ |
12802 | } |
12803 | ||
12804 | ||
f6ac5f3d PA |
12805 | void |
12806 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
12807 | { |
12808 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12809 | char *p; |
35b1e5cc | 12810 | |
bba74b36 | 12811 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
12812 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
12813 | tsv.builtin); | |
00bf0b85 | 12814 | p = rs->buf + strlen (rs->buf); |
c252925c | 12815 | if ((p - rs->buf) + tsv.name.length () * 2 >= get_remote_packet_size ()) |
00bf0b85 | 12816 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 12817 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 12818 | *p++ = '\0'; |
35b1e5cc | 12819 | putpkt (rs->buf); |
b6bb3468 PA |
12820 | remote_get_noisy_reply (); |
12821 | if (*rs->buf == '\0') | |
ad91cd99 | 12822 | error (_("Target does not support this command.")); |
b6bb3468 | 12823 | if (strcmp (rs->buf, "OK") != 0) |
ad91cd99 | 12824 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
12825 | } |
12826 | ||
f6ac5f3d PA |
12827 | void |
12828 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
12829 | { |
12830 | struct remote_state *rs = get_remote_state (); | |
12831 | char addr_buf[40]; | |
12832 | ||
12833 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12834 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12835 | location->owner->number, addr_buf); | |
d248b706 | 12836 | putpkt (rs->buf); |
b6bb3468 | 12837 | remote_get_noisy_reply (); |
d248b706 KY |
12838 | if (*rs->buf == '\0') |
12839 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12840 | if (strcmp (rs->buf, "OK") != 0) | |
12841 | error (_("Error on target while enabling tracepoint.")); | |
12842 | } | |
12843 | ||
f6ac5f3d PA |
12844 | void |
12845 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
12846 | { |
12847 | struct remote_state *rs = get_remote_state (); | |
12848 | char addr_buf[40]; | |
12849 | ||
12850 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12851 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12852 | location->owner->number, addr_buf); | |
d248b706 | 12853 | putpkt (rs->buf); |
b6bb3468 | 12854 | remote_get_noisy_reply (); |
d248b706 KY |
12855 | if (*rs->buf == '\0') |
12856 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12857 | if (strcmp (rs->buf, "OK") != 0) | |
12858 | error (_("Error on target while disabling tracepoint.")); | |
12859 | } | |
12860 | ||
f6ac5f3d PA |
12861 | void |
12862 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
12863 | { |
12864 | asection *s; | |
81b9b86e | 12865 | bfd *abfd = NULL; |
35b1e5cc | 12866 | bfd_size_type size; |
608bcef2 | 12867 | bfd_vma vma; |
35b1e5cc | 12868 | int anysecs = 0; |
c2fa21f1 | 12869 | int offset = 0; |
35b1e5cc SS |
12870 | |
12871 | if (!exec_bfd) | |
12872 | return; /* No information to give. */ | |
12873 | ||
b6bb3468 PA |
12874 | struct remote_state *rs = get_remote_state (); |
12875 | ||
12876 | strcpy (rs->buf, "QTro"); | |
12877 | offset = strlen (rs->buf); | |
35b1e5cc SS |
12878 | for (s = exec_bfd->sections; s; s = s->next) |
12879 | { | |
12880 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12881 | int sec_length; |
35b1e5cc SS |
12882 | |
12883 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12884 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12885 | (s->flags & SEC_READONLY) == 0) |
12886 | continue; | |
12887 | ||
12888 | anysecs = 1; | |
81b9b86e | 12889 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12890 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12891 | sprintf_vma (tmp1, vma); |
12892 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 12893 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
b6bb3468 | 12894 | if (offset + sec_length + 1 > rs->buf_size) |
c2fa21f1 | 12895 | { |
4082afcc | 12896 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12897 | warning (_("\ |
c2fa21f1 HZ |
12898 | Too many sections for read-only sections definition packet.")); |
12899 | break; | |
12900 | } | |
b6bb3468 | 12901 | xsnprintf (rs->buf + offset, rs->buf_size - offset, ":%s,%s", |
bba74b36 | 12902 | tmp1, tmp2); |
c2fa21f1 | 12903 | offset += sec_length; |
35b1e5cc SS |
12904 | } |
12905 | if (anysecs) | |
12906 | { | |
b6bb3468 PA |
12907 | putpkt (rs->buf); |
12908 | getpkt (&rs->buf, &rs->buf_size, 0); | |
35b1e5cc SS |
12909 | } |
12910 | } | |
12911 | ||
f6ac5f3d PA |
12912 | void |
12913 | remote_target::trace_start () | |
35b1e5cc | 12914 | { |
b6bb3468 PA |
12915 | struct remote_state *rs = get_remote_state (); |
12916 | ||
35b1e5cc | 12917 | putpkt ("QTStart"); |
b6bb3468 PA |
12918 | remote_get_noisy_reply (); |
12919 | if (*rs->buf == '\0') | |
ad91cd99 | 12920 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12921 | if (strcmp (rs->buf, "OK") != 0) |
12922 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12923 | } |
12924 | ||
f6ac5f3d PA |
12925 | int |
12926 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 12927 | { |
953b98d1 | 12928 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12929 | char *p = NULL; |
0df8b418 | 12930 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12931 | extern int trace_regblock_size; |
bd3eecc3 | 12932 | enum packet_result result; |
b6bb3468 | 12933 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 12934 | |
4082afcc | 12935 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12936 | return -1; |
a744cf53 | 12937 | |
5cd63fda | 12938 | trace_regblock_size |
9d6eea31 | 12939 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 12940 | |
049dc89b JK |
12941 | putpkt ("qTStatus"); |
12942 | ||
492d29ea | 12943 | TRY |
67f41397 | 12944 | { |
b6bb3468 | 12945 | p = remote_get_noisy_reply (); |
67f41397 | 12946 | } |
492d29ea | 12947 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12948 | { |
598d3636 JK |
12949 | if (ex.error != TARGET_CLOSE_ERROR) |
12950 | { | |
12951 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12952 | return -1; | |
12953 | } | |
12954 | throw_exception (ex); | |
67f41397 | 12955 | } |
492d29ea | 12956 | END_CATCH |
00bf0b85 | 12957 | |
bd3eecc3 PA |
12958 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12959 | ||
00bf0b85 | 12960 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12961 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12962 | return -1; |
35b1e5cc | 12963 | |
00bf0b85 | 12964 | /* We're working with a live target. */ |
f5911ea1 | 12965 | ts->filename = NULL; |
00bf0b85 | 12966 | |
00bf0b85 | 12967 | if (*p++ != 'T') |
b6bb3468 | 12968 | error (_("Bogus trace status reply from target: %s"), rs->buf); |
35b1e5cc | 12969 | |
84cebc4a YQ |
12970 | /* Function 'parse_trace_status' sets default value of each field of |
12971 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12972 | parse_trace_status (p, ts); |
12973 | ||
12974 | return ts->running; | |
35b1e5cc SS |
12975 | } |
12976 | ||
f6ac5f3d PA |
12977 | void |
12978 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
12979 | struct uploaded_tp *utp) | |
f196051f SS |
12980 | { |
12981 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12982 | char *reply; |
12983 | struct bp_location *loc; | |
12984 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12985 | size_t size = get_remote_packet_size (); |
f196051f SS |
12986 | |
12987 | if (tp) | |
12988 | { | |
c1fc2657 | 12989 | tp->hit_count = 0; |
f196051f | 12990 | tp->traceframe_usage = 0; |
c1fc2657 | 12991 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
12992 | { |
12993 | /* If the tracepoint was never downloaded, don't go asking for | |
12994 | any status. */ | |
12995 | if (tp->number_on_target == 0) | |
12996 | continue; | |
bba74b36 YQ |
12997 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12998 | phex_nz (loc->address, 0)); | |
f196051f | 12999 | putpkt (rs->buf); |
b6bb3468 | 13000 | reply = remote_get_noisy_reply (); |
f196051f SS |
13001 | if (reply && *reply) |
13002 | { | |
13003 | if (*reply == 'V') | |
13004 | parse_tracepoint_status (reply + 1, bp, utp); | |
13005 | } | |
13006 | } | |
13007 | } | |
13008 | else if (utp) | |
13009 | { | |
13010 | utp->hit_count = 0; | |
13011 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
13012 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
13013 | phex_nz (utp->addr, 0)); | |
f196051f | 13014 | putpkt (rs->buf); |
b6bb3468 | 13015 | reply = remote_get_noisy_reply (); |
f196051f SS |
13016 | if (reply && *reply) |
13017 | { | |
13018 | if (*reply == 'V') | |
13019 | parse_tracepoint_status (reply + 1, bp, utp); | |
13020 | } | |
13021 | } | |
13022 | } | |
13023 | ||
f6ac5f3d PA |
13024 | void |
13025 | remote_target::trace_stop () | |
35b1e5cc | 13026 | { |
b6bb3468 PA |
13027 | struct remote_state *rs = get_remote_state (); |
13028 | ||
35b1e5cc | 13029 | putpkt ("QTStop"); |
b6bb3468 PA |
13030 | remote_get_noisy_reply (); |
13031 | if (*rs->buf == '\0') | |
ad91cd99 | 13032 | error (_("Target does not support this command.")); |
b6bb3468 PA |
13033 | if (strcmp (rs->buf, "OK") != 0) |
13034 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
13035 | } |
13036 | ||
f6ac5f3d PA |
13037 | int |
13038 | remote_target::trace_find (enum trace_find_type type, int num, | |
13039 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13040 | int *tpp) | |
35b1e5cc SS |
13041 | { |
13042 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 13043 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
13044 | char *p, *reply; |
13045 | int target_frameno = -1, target_tracept = -1; | |
13046 | ||
e6e4e701 PA |
13047 | /* Lookups other than by absolute frame number depend on the current |
13048 | trace selected, so make sure it is correct on the remote end | |
13049 | first. */ | |
13050 | if (type != tfind_number) | |
13051 | set_remote_traceframe (); | |
13052 | ||
35b1e5cc SS |
13053 | p = rs->buf; |
13054 | strcpy (p, "QTFrame:"); | |
13055 | p = strchr (p, '\0'); | |
13056 | switch (type) | |
13057 | { | |
13058 | case tfind_number: | |
bba74b36 | 13059 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13060 | break; |
13061 | case tfind_pc: | |
bba74b36 | 13062 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13063 | break; |
13064 | case tfind_tp: | |
bba74b36 | 13065 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13066 | break; |
13067 | case tfind_range: | |
bba74b36 YQ |
13068 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13069 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13070 | break; |
13071 | case tfind_outside: | |
bba74b36 YQ |
13072 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13073 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13074 | break; |
13075 | default: | |
9b20d036 | 13076 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13077 | } |
13078 | ||
13079 | putpkt (rs->buf); | |
b6bb3468 | 13080 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13081 | if (*reply == '\0') |
13082 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13083 | |
13084 | while (reply && *reply) | |
13085 | switch (*reply) | |
13086 | { | |
13087 | case 'F': | |
f197e0f1 VP |
13088 | p = ++reply; |
13089 | target_frameno = (int) strtol (p, &reply, 16); | |
13090 | if (reply == p) | |
13091 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13092 | /* Don't update our remote traceframe number cache on failure |
13093 | to select a remote traceframe. */ | |
f197e0f1 VP |
13094 | if (target_frameno == -1) |
13095 | return -1; | |
35b1e5cc SS |
13096 | break; |
13097 | case 'T': | |
f197e0f1 VP |
13098 | p = ++reply; |
13099 | target_tracept = (int) strtol (p, &reply, 16); | |
13100 | if (reply == p) | |
13101 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13102 | break; |
13103 | case 'O': /* "OK"? */ | |
13104 | if (reply[1] == 'K' && reply[2] == '\0') | |
13105 | reply += 2; | |
13106 | else | |
13107 | error (_("Bogus reply from target: %s"), reply); | |
13108 | break; | |
13109 | default: | |
13110 | error (_("Bogus reply from target: %s"), reply); | |
13111 | } | |
13112 | if (tpp) | |
13113 | *tpp = target_tracept; | |
e6e4e701 | 13114 | |
262e1174 | 13115 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13116 | return target_frameno; |
13117 | } | |
13118 | ||
57810aa7 | 13119 | bool |
f6ac5f3d | 13120 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13121 | { |
13122 | struct remote_state *rs = get_remote_state (); | |
13123 | char *reply; | |
13124 | ULONGEST uval; | |
13125 | ||
e6e4e701 PA |
13126 | set_remote_traceframe (); |
13127 | ||
bba74b36 | 13128 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13129 | putpkt (rs->buf); |
b6bb3468 | 13130 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13131 | if (reply && *reply) |
13132 | { | |
13133 | if (*reply == 'V') | |
13134 | { | |
13135 | unpack_varlen_hex (reply + 1, &uval); | |
13136 | *val = (LONGEST) uval; | |
57810aa7 | 13137 | return true; |
35b1e5cc SS |
13138 | } |
13139 | } | |
57810aa7 | 13140 | return false; |
35b1e5cc SS |
13141 | } |
13142 | ||
f6ac5f3d PA |
13143 | int |
13144 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13145 | { |
13146 | struct remote_state *rs = get_remote_state (); | |
13147 | char *p, *reply; | |
13148 | ||
13149 | p = rs->buf; | |
13150 | strcpy (p, "QTSave:"); | |
13151 | p += strlen (p); | |
13152 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
13153 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 13154 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13155 | *p++ = '\0'; |
13156 | putpkt (rs->buf); | |
b6bb3468 | 13157 | reply = remote_get_noisy_reply (); |
d6c5869f | 13158 | if (*reply == '\0') |
ad91cd99 PA |
13159 | error (_("Target does not support this command.")); |
13160 | if (strcmp (reply, "OK") != 0) | |
13161 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13162 | return 0; |
13163 | } | |
13164 | ||
13165 | /* This is basically a memory transfer, but needs to be its own packet | |
13166 | because we don't know how the target actually organizes its trace | |
13167 | memory, plus we want to be able to ask for as much as possible, but | |
13168 | not be unhappy if we don't get as much as we ask for. */ | |
13169 | ||
f6ac5f3d PA |
13170 | LONGEST |
13171 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13172 | { |
13173 | struct remote_state *rs = get_remote_state (); | |
13174 | char *reply; | |
13175 | char *p; | |
13176 | int rslt; | |
13177 | ||
13178 | p = rs->buf; | |
13179 | strcpy (p, "qTBuffer:"); | |
13180 | p += strlen (p); | |
13181 | p += hexnumstr (p, offset); | |
13182 | *p++ = ','; | |
13183 | p += hexnumstr (p, len); | |
13184 | *p++ = '\0'; | |
13185 | ||
13186 | putpkt (rs->buf); | |
b6bb3468 | 13187 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13188 | if (reply && *reply) |
13189 | { | |
13190 | /* 'l' by itself means we're at the end of the buffer and | |
13191 | there is nothing more to get. */ | |
13192 | if (*reply == 'l') | |
13193 | return 0; | |
13194 | ||
13195 | /* Convert the reply into binary. Limit the number of bytes to | |
13196 | convert according to our passed-in buffer size, rather than | |
13197 | what was returned in the packet; if the target is | |
13198 | unexpectedly generous and gives us a bigger reply than we | |
13199 | asked for, we don't want to crash. */ | |
b6bb3468 | 13200 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13201 | return rslt; |
13202 | } | |
13203 | ||
13204 | /* Something went wrong, flag as an error. */ | |
13205 | return -1; | |
13206 | } | |
13207 | ||
f6ac5f3d PA |
13208 | void |
13209 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13210 | { |
13211 | struct remote_state *rs = get_remote_state (); | |
13212 | ||
4082afcc | 13213 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13214 | { |
ad91cd99 PA |
13215 | char *reply; |
13216 | ||
bba74b36 | 13217 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 13218 | putpkt (rs->buf); |
b6bb3468 | 13219 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13220 | if (*reply == '\0') |
33da3f1c | 13221 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13222 | if (strcmp (reply, "OK") != 0) |
13223 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13224 | } |
13225 | else if (val) | |
13226 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13227 | } |
13228 | ||
f6ac5f3d PA |
13229 | int |
13230 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c VP |
13231 | { |
13232 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 13233 | |
7aabaf9d SM |
13234 | if (info != NULL && info->priv != NULL) |
13235 | return get_remote_thread_info (info)->core; | |
13236 | ||
dc146f7c VP |
13237 | return -1; |
13238 | } | |
13239 | ||
f6ac5f3d PA |
13240 | void |
13241 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13242 | { |
13243 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13244 | char *reply; |
4daf5ac0 | 13245 | |
bba74b36 | 13246 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 13247 | putpkt (rs->buf); |
b6bb3468 | 13248 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13249 | if (*reply == '\0') |
4daf5ac0 | 13250 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13251 | if (strcmp (reply, "OK") != 0) |
13252 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13253 | } |
13254 | ||
f6ac5f3d PA |
13255 | traceframe_info_up |
13256 | remote_target::traceframe_info () | |
b3b9301e | 13257 | { |
9018be22 | 13258 | gdb::optional<gdb::char_vector> text |
f6ac5f3d | 13259 | = target_read_stralloc (target_stack, TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13260 | NULL); |
9018be22 SM |
13261 | if (text) |
13262 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13263 | |
13264 | return NULL; | |
13265 | } | |
13266 | ||
405f8e94 SS |
13267 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13268 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13269 | if the packet is not supported, and 0 if the minimum instruction | |
13270 | length is unknown. */ | |
13271 | ||
f6ac5f3d PA |
13272 | int |
13273 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13274 | { |
13275 | struct remote_state *rs = get_remote_state (); | |
13276 | char *reply; | |
13277 | ||
e886a173 PA |
13278 | /* If we're not debugging a process yet, the IPA can't be |
13279 | loaded. */ | |
13280 | if (!target_has_execution) | |
13281 | return 0; | |
13282 | ||
13283 | /* Make sure the remote is pointing at the right process. */ | |
13284 | set_general_process (); | |
13285 | ||
bba74b36 | 13286 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13287 | putpkt (rs->buf); |
b6bb3468 | 13288 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13289 | if (*reply == '\0') |
13290 | return -1; | |
13291 | else | |
13292 | { | |
13293 | ULONGEST min_insn_len; | |
13294 | ||
13295 | unpack_varlen_hex (reply, &min_insn_len); | |
13296 | ||
13297 | return (int) min_insn_len; | |
13298 | } | |
13299 | } | |
13300 | ||
f6ac5f3d PA |
13301 | void |
13302 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13303 | { |
4082afcc | 13304 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13305 | { |
13306 | struct remote_state *rs = get_remote_state (); | |
13307 | char *buf = rs->buf; | |
13308 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13309 | enum packet_result result; | |
13310 | ||
13311 | gdb_assert (val >= 0 || val == -1); | |
13312 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13313 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13314 | if (val < 0) | |
13315 | { | |
13316 | *buf++ = '-'; | |
13317 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13318 | } | |
13319 | else | |
13320 | buf += hexnumstr (buf, (ULONGEST) val); | |
13321 | ||
13322 | putpkt (rs->buf); | |
b6bb3468 | 13323 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13324 | result = packet_ok (rs->buf, |
13325 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13326 | ||
13327 | if (result != PACKET_OK) | |
13328 | warning (_("Bogus reply from target: %s"), rs->buf); | |
13329 | } | |
13330 | } | |
13331 | ||
57810aa7 | 13332 | bool |
f6ac5f3d PA |
13333 | remote_target::set_trace_notes (const char *user, const char *notes, |
13334 | const char *stop_notes) | |
f196051f SS |
13335 | { |
13336 | struct remote_state *rs = get_remote_state (); | |
13337 | char *reply; | |
13338 | char *buf = rs->buf; | |
13339 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13340 | int nbytes; | |
13341 | ||
13342 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13343 | if (user) | |
13344 | { | |
13345 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13346 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13347 | buf += 2 * nbytes; |
13348 | *buf++ = ';'; | |
13349 | } | |
13350 | if (notes) | |
13351 | { | |
13352 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13353 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13354 | buf += 2 * nbytes; |
13355 | *buf++ = ';'; | |
13356 | } | |
13357 | if (stop_notes) | |
13358 | { | |
13359 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13360 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13361 | buf += 2 * nbytes; |
13362 | *buf++ = ';'; | |
13363 | } | |
13364 | /* Ensure the buffer is terminated. */ | |
13365 | *buf = '\0'; | |
13366 | ||
13367 | putpkt (rs->buf); | |
b6bb3468 | 13368 | reply = remote_get_noisy_reply (); |
f196051f | 13369 | if (*reply == '\0') |
57810aa7 | 13370 | return false; |
f196051f SS |
13371 | |
13372 | if (strcmp (reply, "OK") != 0) | |
13373 | error (_("Bogus reply from target: %s"), reply); | |
13374 | ||
57810aa7 | 13375 | return true; |
f196051f SS |
13376 | } |
13377 | ||
57810aa7 PA |
13378 | bool |
13379 | remote_target::use_agent (bool use) | |
d1feda86 | 13380 | { |
4082afcc | 13381 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13382 | { |
13383 | struct remote_state *rs = get_remote_state (); | |
13384 | ||
13385 | /* If the stub supports QAgent. */ | |
bba74b36 | 13386 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13387 | putpkt (rs->buf); |
13388 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13389 | ||
13390 | if (strcmp (rs->buf, "OK") == 0) | |
13391 | { | |
f6ac5f3d | 13392 | ::use_agent = use; |
57810aa7 | 13393 | return true; |
d1feda86 YQ |
13394 | } |
13395 | } | |
13396 | ||
57810aa7 | 13397 | return false; |
d1feda86 YQ |
13398 | } |
13399 | ||
57810aa7 | 13400 | bool |
f6ac5f3d | 13401 | remote_target::can_use_agent () |
d1feda86 | 13402 | { |
4082afcc | 13403 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13404 | } |
13405 | ||
9accd112 MM |
13406 | struct btrace_target_info |
13407 | { | |
13408 | /* The ptid of the traced thread. */ | |
13409 | ptid_t ptid; | |
f4abbc16 MM |
13410 | |
13411 | /* The obtained branch trace configuration. */ | |
13412 | struct btrace_config conf; | |
9accd112 MM |
13413 | }; |
13414 | ||
f4abbc16 MM |
13415 | /* Reset our idea of our target's btrace configuration. */ |
13416 | ||
13417 | static void | |
13418 | remote_btrace_reset (void) | |
13419 | { | |
13420 | struct remote_state *rs = get_remote_state (); | |
13421 | ||
13422 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13423 | } | |
13424 | ||
f4abbc16 MM |
13425 | /* Synchronize the configuration with the target. */ |
13426 | ||
13427 | static void | |
13428 | btrace_sync_conf (const struct btrace_config *conf) | |
13429 | { | |
d33501a5 MM |
13430 | struct packet_config *packet; |
13431 | struct remote_state *rs; | |
13432 | char *buf, *pos, *endbuf; | |
13433 | ||
13434 | rs = get_remote_state (); | |
13435 | buf = rs->buf; | |
13436 | endbuf = buf + get_remote_packet_size (); | |
13437 | ||
13438 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13439 | if (packet_config_support (packet) == PACKET_ENABLE | |
13440 | && conf->bts.size != rs->btrace_config.bts.size) | |
13441 | { | |
13442 | pos = buf; | |
13443 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13444 | conf->bts.size); | |
13445 | ||
13446 | putpkt (buf); | |
13447 | getpkt (&buf, &rs->buf_size, 0); | |
13448 | ||
13449 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13450 | { | |
13451 | if (buf[0] == 'E' && buf[1] == '.') | |
13452 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13453 | else | |
13454 | error (_("Failed to configure the BTS buffer size.")); | |
13455 | } | |
13456 | ||
13457 | rs->btrace_config.bts.size = conf->bts.size; | |
13458 | } | |
b20a6524 MM |
13459 | |
13460 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13461 | if (packet_config_support (packet) == PACKET_ENABLE | |
13462 | && conf->pt.size != rs->btrace_config.pt.size) | |
13463 | { | |
13464 | pos = buf; | |
13465 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13466 | conf->pt.size); | |
13467 | ||
13468 | putpkt (buf); | |
13469 | getpkt (&buf, &rs->buf_size, 0); | |
13470 | ||
13471 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13472 | { | |
13473 | if (buf[0] == 'E' && buf[1] == '.') | |
13474 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13475 | else | |
13476 | error (_("Failed to configure the trace buffer size.")); | |
13477 | } | |
13478 | ||
13479 | rs->btrace_config.pt.size = conf->pt.size; | |
13480 | } | |
f4abbc16 MM |
13481 | } |
13482 | ||
13483 | /* Read the current thread's btrace configuration from the target and | |
13484 | store it into CONF. */ | |
13485 | ||
13486 | static void | |
13487 | btrace_read_config (struct btrace_config *conf) | |
13488 | { | |
9018be22 | 13489 | gdb::optional<gdb::char_vector> xml |
f6ac5f3d | 13490 | = target_read_stralloc (target_stack, TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13491 | if (xml) |
13492 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13493 | } |
13494 | ||
c0272db5 TW |
13495 | /* Maybe reopen target btrace. */ |
13496 | ||
13497 | static void | |
13498 | remote_btrace_maybe_reopen (void) | |
13499 | { | |
13500 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13501 | struct thread_info *tp; |
13502 | int btrace_target_pushed = 0; | |
13503 | int warned = 0; | |
13504 | ||
5ed8105e PA |
13505 | scoped_restore_current_thread restore_thread; |
13506 | ||
c0272db5 TW |
13507 | ALL_NON_EXITED_THREADS (tp) |
13508 | { | |
13509 | set_general_thread (tp->ptid); | |
13510 | ||
13511 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13512 | btrace_read_config (&rs->btrace_config); | |
13513 | ||
13514 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13515 | continue; | |
13516 | ||
13517 | #if !defined (HAVE_LIBIPT) | |
13518 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13519 | { | |
13520 | if (!warned) | |
13521 | { | |
13522 | warned = 1; | |
c4e12631 MM |
13523 | warning (_("Target is recording using Intel Processor Trace " |
13524 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13525 | } |
13526 | ||
13527 | continue; | |
13528 | } | |
13529 | #endif /* !defined (HAVE_LIBIPT) */ | |
13530 | ||
13531 | /* Push target, once, but before anything else happens. This way our | |
13532 | changes to the threads will be cleaned up by unpushing the target | |
13533 | in case btrace_read_config () throws. */ | |
13534 | if (!btrace_target_pushed) | |
13535 | { | |
13536 | btrace_target_pushed = 1; | |
13537 | record_btrace_push_target (); | |
13538 | printf_filtered (_("Target is recording using %s.\n"), | |
13539 | btrace_format_string (rs->btrace_config.format)); | |
13540 | } | |
13541 | ||
13542 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13543 | tp->btrace.target->ptid = tp->ptid; | |
13544 | tp->btrace.target->conf = rs->btrace_config; | |
13545 | } | |
c0272db5 TW |
13546 | } |
13547 | ||
9accd112 MM |
13548 | /* Enable branch tracing. */ |
13549 | ||
f6ac5f3d PA |
13550 | struct btrace_target_info * |
13551 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13552 | { |
13553 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13554 | struct packet_config *packet = NULL; |
9accd112 MM |
13555 | struct remote_state *rs = get_remote_state (); |
13556 | char *buf = rs->buf; | |
13557 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13558 | ||
b20a6524 MM |
13559 | switch (conf->format) |
13560 | { | |
13561 | case BTRACE_FORMAT_BTS: | |
13562 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13563 | break; | |
13564 | ||
13565 | case BTRACE_FORMAT_PT: | |
13566 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13567 | break; | |
13568 | } | |
13569 | ||
13570 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13571 | error (_("Target does not support branch tracing.")); |
13572 | ||
f4abbc16 MM |
13573 | btrace_sync_conf (conf); |
13574 | ||
9accd112 MM |
13575 | set_general_thread (ptid); |
13576 | ||
13577 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13578 | putpkt (rs->buf); | |
13579 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13580 | ||
13581 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13582 | { | |
13583 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13584 | error (_("Could not enable branch tracing for %s: %s"), | |
13585 | target_pid_to_str (ptid), rs->buf + 2); | |
13586 | else | |
13587 | error (_("Could not enable branch tracing for %s."), | |
13588 | target_pid_to_str (ptid)); | |
13589 | } | |
13590 | ||
8d749320 | 13591 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13592 | tinfo->ptid = ptid; |
13593 | ||
f4abbc16 MM |
13594 | /* If we fail to read the configuration, we lose some information, but the |
13595 | tracing itself is not impacted. */ | |
492d29ea PA |
13596 | TRY |
13597 | { | |
13598 | btrace_read_config (&tinfo->conf); | |
13599 | } | |
13600 | CATCH (err, RETURN_MASK_ERROR) | |
13601 | { | |
13602 | if (err.message != NULL) | |
13603 | warning ("%s", err.message); | |
13604 | } | |
13605 | END_CATCH | |
f4abbc16 | 13606 | |
9accd112 MM |
13607 | return tinfo; |
13608 | } | |
13609 | ||
13610 | /* Disable branch tracing. */ | |
13611 | ||
f6ac5f3d PA |
13612 | void |
13613 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13614 | { |
13615 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13616 | struct remote_state *rs = get_remote_state (); | |
13617 | char *buf = rs->buf; | |
13618 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13619 | ||
4082afcc | 13620 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13621 | error (_("Target does not support branch tracing.")); |
13622 | ||
13623 | set_general_thread (tinfo->ptid); | |
13624 | ||
13625 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13626 | putpkt (rs->buf); | |
13627 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13628 | ||
13629 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13630 | { | |
13631 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13632 | error (_("Could not disable branch tracing for %s: %s"), | |
13633 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13634 | else | |
13635 | error (_("Could not disable branch tracing for %s."), | |
13636 | target_pid_to_str (tinfo->ptid)); | |
13637 | } | |
13638 | ||
13639 | xfree (tinfo); | |
13640 | } | |
13641 | ||
13642 | /* Teardown branch tracing. */ | |
13643 | ||
f6ac5f3d PA |
13644 | void |
13645 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13646 | { |
13647 | /* We must not talk to the target during teardown. */ | |
13648 | xfree (tinfo); | |
13649 | } | |
13650 | ||
13651 | /* Read the branch trace. */ | |
13652 | ||
f6ac5f3d PA |
13653 | enum btrace_error |
13654 | remote_target::read_btrace (struct btrace_data *btrace, | |
13655 | struct btrace_target_info *tinfo, | |
13656 | enum btrace_read_type type) | |
9accd112 MM |
13657 | { |
13658 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13659 | const char *annex; |
9accd112 | 13660 | |
4082afcc | 13661 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13662 | error (_("Target does not support branch tracing.")); |
13663 | ||
13664 | #if !defined(HAVE_LIBEXPAT) | |
13665 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13666 | #endif | |
13667 | ||
13668 | switch (type) | |
13669 | { | |
864089d2 | 13670 | case BTRACE_READ_ALL: |
9accd112 MM |
13671 | annex = "all"; |
13672 | break; | |
864089d2 | 13673 | case BTRACE_READ_NEW: |
9accd112 MM |
13674 | annex = "new"; |
13675 | break; | |
969c39fb MM |
13676 | case BTRACE_READ_DELTA: |
13677 | annex = "delta"; | |
13678 | break; | |
9accd112 MM |
13679 | default: |
13680 | internal_error (__FILE__, __LINE__, | |
13681 | _("Bad branch tracing read type: %u."), | |
13682 | (unsigned int) type); | |
13683 | } | |
13684 | ||
9018be22 | 13685 | gdb::optional<gdb::char_vector> xml |
f6ac5f3d | 13686 | = target_read_stralloc (target_stack, TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13687 | if (!xml) |
969c39fb | 13688 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13689 | |
9018be22 | 13690 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13691 | |
969c39fb | 13692 | return BTRACE_ERR_NONE; |
9accd112 MM |
13693 | } |
13694 | ||
f6ac5f3d PA |
13695 | const struct btrace_config * |
13696 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
13697 | { |
13698 | return &tinfo->conf; | |
13699 | } | |
13700 | ||
57810aa7 | 13701 | bool |
f6ac5f3d | 13702 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 13703 | { |
4082afcc PA |
13704 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13705 | == PACKET_ENABLE); | |
ced63ec0 GB |
13706 | } |
13707 | ||
9dd130a0 TT |
13708 | /* Implementation of to_load. */ |
13709 | ||
f6ac5f3d PA |
13710 | void |
13711 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
13712 | { |
13713 | generic_load (name, from_tty); | |
13714 | } | |
13715 | ||
c78fa86a GB |
13716 | /* Accepts an integer PID; returns a string representing a file that |
13717 | can be opened on the remote side to get the symbols for the child | |
13718 | process. Returns NULL if the operation is not supported. */ | |
13719 | ||
f6ac5f3d PA |
13720 | char * |
13721 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 13722 | { |
9018be22 | 13723 | static gdb::optional<gdb::char_vector> filename; |
835205d0 GB |
13724 | struct inferior *inf; |
13725 | char *annex = NULL; | |
c78fa86a GB |
13726 | |
13727 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13728 | return NULL; | |
13729 | ||
835205d0 GB |
13730 | inf = find_inferior_pid (pid); |
13731 | if (inf == NULL) | |
13732 | internal_error (__FILE__, __LINE__, | |
13733 | _("not currently attached to process %d"), pid); | |
13734 | ||
13735 | if (!inf->fake_pid_p) | |
13736 | { | |
13737 | const int annex_size = 9; | |
13738 | ||
224c3ddb | 13739 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13740 | xsnprintf (annex, annex_size, "%x", pid); |
13741 | } | |
13742 | ||
f6ac5f3d | 13743 | filename = target_read_stralloc (target_stack, |
c78fa86a GB |
13744 | TARGET_OBJECT_EXEC_FILE, annex); |
13745 | ||
9018be22 | 13746 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
13747 | } |
13748 | ||
750ce8d1 YQ |
13749 | /* Implement the to_can_do_single_step target_ops method. */ |
13750 | ||
f6ac5f3d PA |
13751 | int |
13752 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
13753 | { |
13754 | /* We can only tell whether target supports single step or not by | |
13755 | supported s and S vCont actions if the stub supports vContSupported | |
13756 | feature. If the stub doesn't support vContSupported feature, | |
13757 | we have conservatively to think target doesn't supports single | |
13758 | step. */ | |
13759 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13760 | { | |
13761 | struct remote_state *rs = get_remote_state (); | |
13762 | ||
13763 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13764 | remote_vcont_probe (rs); | |
13765 | ||
13766 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13767 | } | |
13768 | else | |
13769 | return 0; | |
13770 | } | |
13771 | ||
3a00c802 PA |
13772 | /* Implementation of the to_execution_direction method for the remote |
13773 | target. */ | |
13774 | ||
f6ac5f3d PA |
13775 | enum exec_direction_kind |
13776 | remote_target::execution_direction () | |
3a00c802 PA |
13777 | { |
13778 | struct remote_state *rs = get_remote_state (); | |
13779 | ||
13780 | return rs->last_resume_exec_dir; | |
13781 | } | |
13782 | ||
f6327dcb KB |
13783 | /* Return pointer to the thread_info struct which corresponds to |
13784 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13785 | ||
f6ac5f3d PA |
13786 | thread_info * |
13787 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
13788 | int handle_len, | |
13789 | inferior *inf) | |
f6327dcb KB |
13790 | { |
13791 | struct thread_info *tp; | |
13792 | ||
13793 | ALL_NON_EXITED_THREADS (tp) | |
13794 | { | |
7aabaf9d | 13795 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
13796 | |
13797 | if (tp->inf == inf && priv != NULL) | |
13798 | { | |
7aabaf9d | 13799 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 13800 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
13801 | handle_len, priv->thread_handle.size ()); |
13802 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
13803 | handle_len) == 0) |
13804 | return tp; | |
13805 | } | |
13806 | } | |
13807 | ||
13808 | return NULL; | |
13809 | } | |
13810 | ||
57810aa7 | 13811 | bool |
f6ac5f3d | 13812 | remote_target::can_async_p () |
6426a772 | 13813 | { |
5d93a237 TT |
13814 | struct remote_state *rs = get_remote_state (); |
13815 | ||
3015c064 SM |
13816 | /* We don't go async if the user has explicitly prevented it with the |
13817 | "maint set target-async" command. */ | |
c6ebd6cf | 13818 | if (!target_async_permitted) |
57810aa7 | 13819 | return false; |
75c99385 | 13820 | |
23860348 | 13821 | /* We're async whenever the serial device is. */ |
5d93a237 | 13822 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13823 | } |
13824 | ||
57810aa7 | 13825 | bool |
f6ac5f3d | 13826 | remote_target::is_async_p () |
6426a772 | 13827 | { |
5d93a237 TT |
13828 | struct remote_state *rs = get_remote_state (); |
13829 | ||
c6ebd6cf | 13830 | if (!target_async_permitted) |
75c99385 | 13831 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 13832 | return false; |
75c99385 | 13833 | |
23860348 | 13834 | /* We're async whenever the serial device is. */ |
5d93a237 | 13835 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13836 | } |
13837 | ||
2acceee2 JM |
13838 | /* Pass the SERIAL event on and up to the client. One day this code |
13839 | will be able to delay notifying the client of an event until the | |
23860348 | 13840 | point where an entire packet has been received. */ |
2acceee2 | 13841 | |
2acceee2 JM |
13842 | static serial_event_ftype remote_async_serial_handler; |
13843 | ||
6426a772 | 13844 | static void |
819cc324 | 13845 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13846 | { |
2acceee2 JM |
13847 | /* Don't propogate error information up to the client. Instead let |
13848 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13849 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13850 | } |
13851 | ||
74531fed PA |
13852 | static void |
13853 | remote_async_inferior_event_handler (gdb_client_data data) | |
13854 | { | |
13855 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13856 | } | |
13857 | ||
f6ac5f3d PA |
13858 | void |
13859 | remote_target::async (int enable) | |
2acceee2 | 13860 | { |
5d93a237 TT |
13861 | struct remote_state *rs = get_remote_state (); |
13862 | ||
6a3753b3 | 13863 | if (enable) |
2acceee2 | 13864 | { |
88b496c3 | 13865 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13866 | |
13867 | /* If there are pending events in the stop reply queue tell the | |
13868 | event loop to process them. */ | |
13869 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13870 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13871 | /* For simplicity, below we clear the pending events token |
13872 | without remembering whether it is marked, so here we always | |
13873 | mark it. If there's actually no pending notification to | |
13874 | process, this ends up being a no-op (other than a spurious | |
13875 | event-loop wakeup). */ | |
13876 | if (target_is_non_stop_p ()) | |
13877 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13878 | } |
13879 | else | |
b7d2e916 PA |
13880 | { |
13881 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13882 | /* If the core is disabling async, it doesn't want to be |
13883 | disturbed with target events. Clear all async event sources | |
13884 | too. */ | |
b7d2e916 | 13885 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13886 | if (target_is_non_stop_p ()) |
13887 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13888 | } |
6426a772 JM |
13889 | } |
13890 | ||
65706a29 PA |
13891 | /* Implementation of the to_thread_events method. */ |
13892 | ||
f6ac5f3d PA |
13893 | void |
13894 | remote_target::thread_events (int enable) | |
65706a29 PA |
13895 | { |
13896 | struct remote_state *rs = get_remote_state (); | |
13897 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13898 | |
13899 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13900 | return; | |
13901 | ||
13902 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13903 | putpkt (rs->buf); | |
13904 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13905 | ||
13906 | switch (packet_ok (rs->buf, | |
13907 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13908 | { | |
13909 | case PACKET_OK: | |
13910 | if (strcmp (rs->buf, "OK") != 0) | |
13911 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13912 | break; | |
13913 | case PACKET_ERROR: | |
13914 | warning (_("Remote failure reply: %s"), rs->buf); | |
13915 | break; | |
13916 | case PACKET_UNKNOWN: | |
13917 | break; | |
13918 | } | |
13919 | } | |
13920 | ||
5a2468f5 | 13921 | static void |
981a3fb3 | 13922 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 13923 | { |
635c7e8a | 13924 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13925 | } |
13926 | ||
d471ea57 | 13927 | static void |
981a3fb3 | 13928 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 13929 | { |
37a105a1 | 13930 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13931 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13932 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13933 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13934 | |
2e783024 | 13935 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13936 | for (; list != NULL; list = list->next) |
13937 | if (strcmp (list->name, "Z-packet") == 0) | |
13938 | continue; | |
427c3a89 DJ |
13939 | else if (list->type == not_set_cmd) |
13940 | /* Alias commands are exactly like the original, except they | |
13941 | don't have the normal type. */ | |
13942 | continue; | |
13943 | else | |
37a105a1 | 13944 | { |
2e783024 | 13945 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13946 | |
112e8700 SM |
13947 | uiout->field_string ("name", list->name); |
13948 | uiout->text (": "); | |
427c3a89 | 13949 | if (list->type == show_cmd) |
f5c4fcd9 | 13950 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13951 | else |
13952 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13953 | } |
d471ea57 | 13954 | } |
5a2468f5 | 13955 | |
0f71a2f6 | 13956 | |
23860348 | 13957 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13958 | static void |
13959 | remote_new_objfile (struct objfile *objfile) | |
13960 | { | |
5d93a237 TT |
13961 | struct remote_state *rs = get_remote_state (); |
13962 | ||
13963 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13964 | remote_check_symbols (); |
dc8acb97 MS |
13965 | } |
13966 | ||
00bf0b85 SS |
13967 | /* Pull all the tracepoints defined on the target and create local |
13968 | data structures representing them. We don't want to create real | |
13969 | tracepoints yet, we don't want to mess up the user's existing | |
13970 | collection. */ | |
13971 | ||
f6ac5f3d PA |
13972 | int |
13973 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 13974 | { |
00bf0b85 SS |
13975 | struct remote_state *rs = get_remote_state (); |
13976 | char *p; | |
d5551862 | 13977 | |
00bf0b85 SS |
13978 | /* Ask for a first packet of tracepoint definition. */ |
13979 | putpkt ("qTfP"); | |
13980 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13981 | p = rs->buf; | |
13982 | while (*p && *p != 'l') | |
d5551862 | 13983 | { |
00bf0b85 SS |
13984 | parse_tracepoint_definition (p, utpp); |
13985 | /* Ask for another packet of tracepoint definition. */ | |
13986 | putpkt ("qTsP"); | |
13987 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13988 | p = rs->buf; | |
d5551862 | 13989 | } |
00bf0b85 | 13990 | return 0; |
d5551862 SS |
13991 | } |
13992 | ||
f6ac5f3d PA |
13993 | int |
13994 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 13995 | { |
00bf0b85 | 13996 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13997 | char *p; |
d5551862 | 13998 | |
00bf0b85 SS |
13999 | /* Ask for a first packet of variable definition. */ |
14000 | putpkt ("qTfV"); | |
d5551862 SS |
14001 | getpkt (&rs->buf, &rs->buf_size, 0); |
14002 | p = rs->buf; | |
00bf0b85 | 14003 | while (*p && *p != 'l') |
d5551862 | 14004 | { |
00bf0b85 SS |
14005 | parse_tsv_definition (p, utsvp); |
14006 | /* Ask for another packet of variable definition. */ | |
14007 | putpkt ("qTsV"); | |
d5551862 SS |
14008 | getpkt (&rs->buf, &rs->buf_size, 0); |
14009 | p = rs->buf; | |
14010 | } | |
00bf0b85 | 14011 | return 0; |
d5551862 SS |
14012 | } |
14013 | ||
c1e36e3e PA |
14014 | /* The "set/show range-stepping" show hook. */ |
14015 | ||
14016 | static void | |
14017 | show_range_stepping (struct ui_file *file, int from_tty, | |
14018 | struct cmd_list_element *c, | |
14019 | const char *value) | |
14020 | { | |
14021 | fprintf_filtered (file, | |
14022 | _("Debugger's willingness to use range stepping " | |
14023 | "is %s.\n"), value); | |
14024 | } | |
14025 | ||
14026 | /* The "set/show range-stepping" set hook. */ | |
14027 | ||
14028 | static void | |
eb4c3f4a | 14029 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14030 | struct cmd_list_element *c) |
14031 | { | |
5d93a237 TT |
14032 | struct remote_state *rs = get_remote_state (); |
14033 | ||
c1e36e3e PA |
14034 | /* Whene enabling, check whether range stepping is actually |
14035 | supported by the target, and warn if not. */ | |
14036 | if (use_range_stepping) | |
14037 | { | |
5d93a237 | 14038 | if (rs->remote_desc != NULL) |
c1e36e3e | 14039 | { |
4082afcc | 14040 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
14041 | remote_vcont_probe (rs); |
14042 | ||
4082afcc | 14043 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
14044 | && rs->supports_vCont.r) |
14045 | return; | |
14046 | } | |
14047 | ||
14048 | warning (_("Range stepping is not supported by the current target")); | |
14049 | } | |
14050 | } | |
14051 | ||
c906108c | 14052 | void |
fba45db2 | 14053 | _initialize_remote (void) |
c906108c | 14054 | { |
9a7071a8 | 14055 | struct cmd_list_element *cmd; |
6f937416 | 14056 | const char *cmd_name; |
ea9c271d | 14057 | |
0f71a2f6 | 14058 | /* architecture specific data */ |
29709017 DJ |
14059 | remote_g_packet_data_handle = |
14060 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14061 | |
94585166 DB |
14062 | remote_pspace_data |
14063 | = register_program_space_data_with_cleanup (NULL, | |
14064 | remote_pspace_data_cleanup); | |
14065 | ||
ea9c271d DJ |
14066 | /* Initialize the per-target state. At the moment there is only one |
14067 | of these, not one per target. Only one target is active at a | |
cf792862 | 14068 | time. */ |
de44f5a7 | 14069 | remote_state = new struct remote_state (); |
ea9c271d | 14070 | |
d9f719f1 PA |
14071 | add_target (remote_target_info, remote_target::open); |
14072 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14073 | |
dc8acb97 | 14074 | /* Hook into new objfile notification. */ |
76727919 | 14075 | gdb::observers::new_objfile.attach (remote_new_objfile); |
5f4cf0bb YQ |
14076 | /* We're no longer interested in notification events of an inferior |
14077 | when it exits. */ | |
76727919 | 14078 | gdb::observers::inferior_exit.attach (discard_pending_stop_replies); |
dc8acb97 | 14079 | |
c906108c SS |
14080 | #if 0 |
14081 | init_remote_threadtests (); | |
14082 | #endif | |
14083 | ||
722247f1 | 14084 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 14085 | /* set/show remote ... */ |
d471ea57 | 14086 | |
1bedd215 | 14087 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
14088 | Remote protocol specific variables\n\ |
14089 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14090 | the packets being used"), |
cff3e48b | 14091 | &remote_set_cmdlist, "set remote ", |
23860348 | 14092 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14093 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
14094 | Remote protocol specific variables\n\ |
14095 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14096 | the packets being used"), |
cff3e48b | 14097 | &remote_show_cmdlist, "show remote ", |
23860348 | 14098 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14099 | |
1a966eab AC |
14100 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14101 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14102 | Argument is a single section name (default: all loaded sections).\n\ |
14103 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14104 | &cmdlist); |
14105 | ||
1a966eab AC |
14106 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14107 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14108 | maintenance packet TEXT\n\ |
14109 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14110 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14111 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14112 | terminating `#' character and checksum."), |
c906108c SS |
14113 | &maintenancelist); |
14114 | ||
7915a72c AC |
14115 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14116 | Set whether to send break if interrupted."), _("\ | |
14117 | Show whether to send break if interrupted."), _("\ | |
14118 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14119 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14120 | &setlist, &showlist); |
9a7071a8 JB |
14121 | cmd_name = "remotebreak"; |
14122 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14123 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14124 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14125 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14126 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14127 | ||
14128 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14129 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14130 | _("\ | |
9a7071a8 JB |
14131 | Set interrupt sequence to remote target."), _("\ |
14132 | Show interrupt sequence to remote target."), _("\ | |
14133 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14134 | NULL, show_interrupt_sequence, | |
14135 | &remote_set_cmdlist, | |
14136 | &remote_show_cmdlist); | |
14137 | ||
14138 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14139 | &interrupt_on_connect, _("\ | |
14140 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14141 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14142 | If set, interrupt sequence is sent to remote target."), | |
14143 | NULL, NULL, | |
14144 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14145 | |
23860348 | 14146 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14147 | |
1a966eab AC |
14148 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14149 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14150 | &setlist); |
1a966eab AC |
14151 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14152 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14153 | &showlist); |
14154 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14155 | set_memory_write_packet_size, _("\ |
14156 | Set the maximum number of bytes per memory-write packet.\n\ | |
14157 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14158 | default packet size. The actual limit is further reduced\n\ | |
14159 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14160 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14161 | &remote_set_cmdlist); |
14162 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14163 | set_memory_read_packet_size, _("\ |
14164 | Set the maximum number of bytes per memory-read packet.\n\ | |
14165 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14166 | default packet size. The actual limit is further reduced\n\ | |
14167 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14168 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14169 | &remote_set_cmdlist); |
14170 | add_cmd ("memory-write-packet-size", no_class, | |
14171 | show_memory_write_packet_size, | |
1a966eab | 14172 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14173 | &remote_show_cmdlist); |
14174 | add_cmd ("memory-read-packet-size", no_class, | |
14175 | show_memory_read_packet_size, | |
1a966eab | 14176 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14177 | &remote_show_cmdlist); |
c906108c | 14178 | |
b3f42336 | 14179 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14180 | &remote_hw_watchpoint_limit, _("\ |
14181 | Set the maximum number of target hardware watchpoints."), _("\ | |
14182 | Show the maximum number of target hardware watchpoints."), _("\ | |
14183 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14184 | NULL, NULL, /* FIXME: i18n: The maximum |
14185 | number of target hardware | |
14186 | watchpoints is %s. */ | |
b3f42336 | 14187 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14188 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14189 | &remote_hw_watchpoint_length_limit, _("\ | |
14190 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14191 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14192 | Specify a negative limit for unlimited."), | |
14193 | NULL, NULL, /* FIXME: i18n: The maximum | |
14194 | length (in bytes) of a target | |
14195 | hardware watchpoint is %s. */ | |
14196 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14197 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14198 | &remote_hw_breakpoint_limit, _("\ |
14199 | Set the maximum number of target hardware breakpoints."), _("\ | |
14200 | Show the maximum number of target hardware breakpoints."), _("\ | |
14201 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14202 | NULL, NULL, /* FIXME: i18n: The maximum |
14203 | number of target hardware | |
14204 | breakpoints is %s. */ | |
b3f42336 | 14205 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14206 | |
1b493192 PA |
14207 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14208 | &remote_address_size, _("\ | |
4d28ad1e AC |
14209 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14210 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14211 | NULL, |
14212 | NULL, /* FIXME: i18n: */ | |
14213 | &setlist, &showlist); | |
c906108c | 14214 | |
ca4f7f8b PA |
14215 | init_all_packet_configs (); |
14216 | ||
444abaca | 14217 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14218 | "X", "binary-download", 1); |
0f71a2f6 | 14219 | |
444abaca | 14220 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14221 | "vCont", "verbose-resume", 0); |
506fb367 | 14222 | |
89be2091 DJ |
14223 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14224 | "QPassSignals", "pass-signals", 0); | |
14225 | ||
82075af2 JS |
14226 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14227 | "QCatchSyscalls", "catch-syscalls", 0); | |
14228 | ||
9b224c5e PA |
14229 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14230 | "QProgramSignals", "program-signals", 0); | |
14231 | ||
bc3b087d SDJ |
14232 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14233 | "QSetWorkingDir", "set-working-dir", 0); | |
14234 | ||
aefd8b33 SDJ |
14235 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14236 | "QStartupWithShell", "startup-with-shell", 0); | |
14237 | ||
0a2dde4a SDJ |
14238 | add_packet_config_cmd (&remote_protocol_packets |
14239 | [PACKET_QEnvironmentHexEncoded], | |
14240 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14241 | 0); | |
14242 | ||
14243 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14244 | "QEnvironmentReset", "environment-reset", | |
14245 | 0); | |
14246 | ||
14247 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14248 | "QEnvironmentUnset", "environment-unset", | |
14249 | 0); | |
14250 | ||
444abaca | 14251 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14252 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14253 | |
444abaca | 14254 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14255 | "P", "set-register", 1); |
d471ea57 | 14256 | |
444abaca | 14257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14258 | "p", "fetch-register", 1); |
b96ec7ac | 14259 | |
444abaca | 14260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14261 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14262 | |
444abaca | 14263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14264 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14265 | |
444abaca | 14266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14267 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14268 | |
444abaca | 14269 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14270 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14271 | |
444abaca | 14272 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14273 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14274 | |
0876f84a DJ |
14275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14276 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14277 | |
c78fa86a GB |
14278 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14279 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14280 | ||
23181151 DJ |
14281 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14282 | "qXfer:features:read", "target-features", 0); | |
14283 | ||
cfa9d6d9 DJ |
14284 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14285 | "qXfer:libraries:read", "library-info", 0); | |
14286 | ||
2268b414 JK |
14287 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14288 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14289 | ||
fd79ecee DJ |
14290 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14291 | "qXfer:memory-map:read", "memory-map", 0); | |
14292 | ||
0e7f50da UW |
14293 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14294 | "qXfer:spu:read", "read-spu-object", 0); | |
14295 | ||
14296 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14297 | "qXfer:spu:write", "write-spu-object", 0); | |
14298 | ||
07e059b5 VP |
14299 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14300 | "qXfer:osdata:read", "osdata", 0); | |
14301 | ||
dc146f7c VP |
14302 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14303 | "qXfer:threads:read", "threads", 0); | |
14304 | ||
4aa995e1 PA |
14305 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14306 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14307 | ||
14308 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14309 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14310 | ||
b3b9301e PA |
14311 | add_packet_config_cmd |
14312 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14313 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14314 | |
169081d0 TG |
14315 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14316 | "qXfer:uib:read", "unwind-info-block", 0); | |
14317 | ||
444abaca | 14318 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14319 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14320 | 0); |
14321 | ||
711e434b PM |
14322 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14323 | "qGetTIBAddr", "get-thread-information-block-address", | |
14324 | 0); | |
14325 | ||
40ab02ce MS |
14326 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14327 | "bc", "reverse-continue", 0); | |
14328 | ||
14329 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14330 | "bs", "reverse-step", 0); | |
14331 | ||
be2a5f71 DJ |
14332 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14333 | "qSupported", "supported-packets", 0); | |
14334 | ||
08388c79 DE |
14335 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14336 | "qSearch:memory", "search-memory", 0); | |
14337 | ||
bd3eecc3 PA |
14338 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14339 | "qTStatus", "trace-status", 0); | |
14340 | ||
15a201c8 GB |
14341 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14342 | "vFile:setfs", "hostio-setfs", 0); | |
14343 | ||
a6b151f1 DJ |
14344 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14345 | "vFile:open", "hostio-open", 0); | |
14346 | ||
14347 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14348 | "vFile:pread", "hostio-pread", 0); | |
14349 | ||
14350 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14351 | "vFile:pwrite", "hostio-pwrite", 0); | |
14352 | ||
14353 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14354 | "vFile:close", "hostio-close", 0); | |
14355 | ||
14356 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14357 | "vFile:unlink", "hostio-unlink", 0); | |
14358 | ||
b9e7b9c3 UW |
14359 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14360 | "vFile:readlink", "hostio-readlink", 0); | |
14361 | ||
0a93529c GB |
14362 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14363 | "vFile:fstat", "hostio-fstat", 0); | |
14364 | ||
2d717e4f DJ |
14365 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14366 | "vAttach", "attach", 0); | |
14367 | ||
14368 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14369 | "vRun", "run", 0); | |
14370 | ||
a6f3e723 SL |
14371 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14372 | "QStartNoAckMode", "noack", 0); | |
14373 | ||
82f73884 PA |
14374 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14375 | "vKill", "kill", 0); | |
14376 | ||
0b16c5cf PA |
14377 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14378 | "qAttached", "query-attached", 0); | |
14379 | ||
782b2b07 | 14380 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14381 | "ConditionalTracepoints", |
14382 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14383 | |
14384 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14385 | "ConditionalBreakpoints", | |
14386 | "conditional-breakpoints", 0); | |
14387 | ||
d3ce09f5 SS |
14388 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14389 | "BreakpointCommands", | |
14390 | "breakpoint-commands", 0); | |
14391 | ||
7a697b8d SS |
14392 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14393 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14394 | |
409873ef SS |
14395 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14396 | "TracepointSource", "TracepointSource", 0); | |
14397 | ||
d914c394 SS |
14398 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14399 | "QAllow", "allow", 0); | |
14400 | ||
0fb4aa4b PA |
14401 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14402 | "StaticTracepoints", "static-tracepoints", 0); | |
14403 | ||
1e4d1764 YQ |
14404 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14405 | "InstallInTrace", "install-in-trace", 0); | |
14406 | ||
0fb4aa4b PA |
14407 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14408 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14409 | ||
78d85199 YQ |
14410 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14411 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14412 | ||
03583c20 UW |
14413 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14414 | "QDisableRandomization", "disable-randomization", 0); | |
14415 | ||
d1feda86 YQ |
14416 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14417 | "QAgent", "agent", 0); | |
14418 | ||
f6f899bf HAQ |
14419 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14420 | "QTBuffer:size", "trace-buffer-size", 0); | |
14421 | ||
9accd112 MM |
14422 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14423 | "Qbtrace:off", "disable-btrace", 0); | |
14424 | ||
14425 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14426 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14427 | ||
14428 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14429 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14430 | |
14431 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14432 | "qXfer:btrace", "read-btrace", 0); | |
14433 | ||
f4abbc16 MM |
14434 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14435 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14436 | ||
d33501a5 MM |
14437 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14438 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14439 | ||
73b8c1fd PA |
14440 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14441 | "multiprocess-feature", "multiprocess-feature", 0); | |
14442 | ||
f7e6eed5 PA |
14443 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14444 | "swbreak-feature", "swbreak-feature", 0); | |
14445 | ||
14446 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14447 | "hwbreak-feature", "hwbreak-feature", 0); | |
14448 | ||
89245bc0 DB |
14449 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14450 | "fork-event-feature", "fork-event-feature", 0); | |
14451 | ||
14452 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14453 | "vfork-event-feature", "vfork-event-feature", 0); | |
14454 | ||
b20a6524 MM |
14455 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14456 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14457 | ||
750ce8d1 YQ |
14458 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14459 | "vContSupported", "verbose-resume-supported", 0); | |
14460 | ||
94585166 DB |
14461 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14462 | "exec-event-feature", "exec-event-feature", 0); | |
14463 | ||
de979965 PA |
14464 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14465 | "vCtrlC", "ctrl-c", 0); | |
14466 | ||
65706a29 PA |
14467 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14468 | "QThreadEvents", "thread-events", 0); | |
14469 | ||
f2faf941 PA |
14470 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14471 | "N stop reply", "no-resumed-stop-reply", 0); | |
14472 | ||
0b736949 DB |
14473 | /* Assert that we've registered "set remote foo-packet" commands |
14474 | for all packet configs. */ | |
ca4f7f8b PA |
14475 | { |
14476 | int i; | |
14477 | ||
14478 | for (i = 0; i < PACKET_MAX; i++) | |
14479 | { | |
14480 | /* Ideally all configs would have a command associated. Some | |
14481 | still don't though. */ | |
14482 | int excepted; | |
14483 | ||
14484 | switch (i) | |
14485 | { | |
14486 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14487 | case PACKET_EnableDisableTracepoints_feature: |
14488 | case PACKET_tracenz_feature: | |
14489 | case PACKET_DisconnectedTracing_feature: | |
14490 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14491 | case PACKET_qCRC: |
14492 | /* Additions to this list need to be well justified: | |
14493 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14494 | excepted = 1; |
14495 | break; | |
14496 | default: | |
14497 | excepted = 0; | |
14498 | break; | |
14499 | } | |
14500 | ||
14501 | /* This catches both forgetting to add a config command, and | |
14502 | forgetting to remove a packet from the exception list. */ | |
14503 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14504 | } | |
14505 | } | |
14506 | ||
37a105a1 DJ |
14507 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14508 | Z sub-packet has its own set and show commands, but users may | |
14509 | have sets to this variable in their .gdbinit files (or in their | |
14510 | documentation). */ | |
e9e68a56 | 14511 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14512 | &remote_Z_packet_detect, _("\ |
14513 | Set use of remote protocol `Z' packets"), _("\ | |
14514 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14515 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14516 | packets."), |
e9e68a56 | 14517 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14518 | show_remote_protocol_Z_packet_cmd, |
14519 | /* FIXME: i18n: Use of remote protocol | |
14520 | `Z' packets is %s. */ | |
e9e68a56 | 14521 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14522 | |
a6b151f1 DJ |
14523 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14524 | Manipulate files on the remote system\n\ | |
14525 | Transfer files to and from the remote target system."), | |
14526 | &remote_cmdlist, "remote ", | |
14527 | 0 /* allow-unknown */, &cmdlist); | |
14528 | ||
14529 | add_cmd ("put", class_files, remote_put_command, | |
14530 | _("Copy a local file to the remote system."), | |
14531 | &remote_cmdlist); | |
14532 | ||
14533 | add_cmd ("get", class_files, remote_get_command, | |
14534 | _("Copy a remote file to the local system."), | |
14535 | &remote_cmdlist); | |
14536 | ||
14537 | add_cmd ("delete", class_files, remote_delete_command, | |
14538 | _("Delete a remote file."), | |
14539 | &remote_cmdlist); | |
14540 | ||
2d717e4f | 14541 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14542 | &remote_exec_file_var, _("\ |
2d717e4f | 14543 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14544 | Show the remote pathname for \"run\""), NULL, |
14545 | set_remote_exec_file, | |
14546 | show_remote_exec_file, | |
14547 | &remote_set_cmdlist, | |
14548 | &remote_show_cmdlist); | |
2d717e4f | 14549 | |
c1e36e3e PA |
14550 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14551 | &use_range_stepping, _("\ | |
14552 | Enable or disable range stepping."), _("\ | |
14553 | Show whether target-assisted range stepping is enabled."), _("\ | |
14554 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14555 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14556 | of issuing multiple single-steps. This speeds up source level\n\ | |
14557 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14558 | stepping is supported by the target. The default is on."), | |
14559 | set_range_stepping, | |
14560 | show_range_stepping, | |
14561 | &setlist, | |
14562 | &showlist); | |
14563 | ||
449092f6 CV |
14564 | /* Eventually initialize fileio. See fileio.c */ |
14565 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14566 | |
ba348170 | 14567 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14568 | special ptids with it set to != 0. */ |
ba348170 PA |
14569 | magic_null_ptid = ptid_build (42000, -1, 1); |
14570 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14571 | any_thread_ptid = ptid_build (42000, 0, 1); | |
c906108c | 14572 | } |