Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1988-2018 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
438e1e42 | 50 | #include "gdb_sys_time.h" |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
2ec845e7 | 75 | #include "common/scoped_restore.h" |
0a2dde4a | 76 | #include "environ.h" |
f6327dcb | 77 | #include "common/byte-vector.h" |
35b1e5cc | 78 | |
94585166 DB |
79 | /* Per-program-space data key. */ |
80 | static const struct program_space_data *remote_pspace_data; | |
81 | ||
82 | /* The variable registered as the control variable used by the | |
83 | remote exec-file commands. While the remote exec-file setting is | |
84 | per-program-space, the set/show machinery uses this as the | |
85 | location of the remote exec-file value. */ | |
86 | static char *remote_exec_file_var; | |
87 | ||
6765f3e5 DJ |
88 | /* The size to align memory write packets, when practical. The protocol |
89 | does not guarantee any alignment, and gdb will generate short | |
90 | writes and unaligned writes, but even as a best-effort attempt this | |
91 | can improve bulk transfers. For instance, if a write is misaligned | |
92 | relative to the target's data bus, the stub may need to make an extra | |
93 | round trip fetching data from the target. This doesn't make a | |
94 | huge difference, but it's easy to do, so we try to be helpful. | |
95 | ||
96 | The alignment chosen is arbitrary; usually data bus width is | |
97 | important here, not the possibly larger cache line size. */ | |
98 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
99 | ||
23860348 | 100 | /* Prototypes for local functions. */ |
6d820c5c | 101 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 102 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 103 | int forever, int *is_notif); |
6426a772 | 104 | |
a14ed312 | 105 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 106 | |
f32dbf8c MM |
107 | static void remote_prepare_to_store (struct target_ops *self, |
108 | struct regcache *regcache); | |
c906108c | 109 | |
014f9477 TT |
110 | static void remote_open_1 (const char *, int, struct target_ops *, |
111 | int extended_p); | |
c906108c | 112 | |
de90e03d | 113 | static void remote_close (struct target_ops *self); |
c906108c | 114 | |
cbb8991c DB |
115 | struct remote_state; |
116 | ||
117 | static int remote_vkill (int pid, struct remote_state *rs); | |
118 | ||
8020350c DB |
119 | static void remote_kill_k (void); |
120 | ||
136d6dae | 121 | static void remote_mourn (struct target_ops *ops); |
c906108c | 122 | |
a14ed312 | 123 | static void extended_remote_restart (void); |
c906108c | 124 | |
a14ed312 | 125 | static int readchar (int timeout); |
c906108c | 126 | |
c33e31fd PA |
127 | static void remote_serial_write (const char *str, int len); |
128 | ||
7d85a9c0 | 129 | static void remote_kill (struct target_ops *ops); |
c906108c | 130 | |
6a109b6b | 131 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 132 | |
6a109b6b | 133 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 134 | |
6a3753b3 | 135 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 136 | |
65706a29 PA |
137 | static void remote_thread_events (struct target_ops *ops, int enable); |
138 | ||
a14ed312 | 139 | static void interrupt_query (void); |
c906108c | 140 | |
d62a8ae2 SM |
141 | static void set_general_thread (ptid_t ptid); |
142 | static void set_continue_thread (ptid_t ptid); | |
c906108c | 143 | |
a14ed312 | 144 | static void get_offsets (void); |
c906108c | 145 | |
6d820c5c DJ |
146 | static void skip_frame (void); |
147 | ||
148 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 149 | |
a14ed312 | 150 | static int hexnumlen (ULONGEST num); |
c906108c | 151 | |
a14ed312 | 152 | static void init_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_extended_remote_ops (void); |
c906108c | 155 | |
1eab8a48 | 156 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 157 | |
a14ed312 | 158 | static int stubhex (int ch); |
c906108c | 159 | |
a14ed312 | 160 | static int hexnumstr (char *, ULONGEST); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 163 | |
a14ed312 | 164 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 165 | |
baa336ce | 166 | static void print_packet (const char *); |
c906108c | 167 | |
a14ed312 | 168 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 169 | |
39f77062 | 170 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 171 | |
baa336ce | 172 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 173 | |
a14ed312 | 174 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 175 | |
5a2468f5 | 176 | struct packet_config; |
5a2468f5 | 177 | |
a14ed312 | 178 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 179 | |
bb572ddd DJ |
180 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
181 | int from_tty, | |
182 | struct cmd_list_element *c, | |
183 | const char *value); | |
184 | ||
82f73884 | 185 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
256642e8 | 186 | static ptid_t read_ptid (const char *buf, const char **obuf); |
82f73884 | 187 | |
c378d69d | 188 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 189 | |
8bd200f1 TT |
190 | static int remote_get_trace_status (struct target_ops *self, |
191 | struct trace_status *ts); | |
d5551862 | 192 | |
ab6617cc TT |
193 | static int remote_upload_tracepoints (struct target_ops *self, |
194 | struct uploaded_tp **utpp); | |
00bf0b85 | 195 | |
181e3713 TT |
196 | static int remote_upload_trace_state_variables (struct target_ops *self, |
197 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 198 | |
c8d104ad PA |
199 | static void remote_query_supported (void); |
200 | ||
36d25514 | 201 | static void remote_check_symbols (void); |
c8d104ad | 202 | |
74531fed | 203 | struct stop_reply; |
74531fed | 204 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 205 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 206 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 207 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
208 | static int peek_stop_reply (ptid_t ptid); |
209 | ||
cbb8991c DB |
210 | struct threads_listing_context; |
211 | static void remove_new_fork_children (struct threads_listing_context *); | |
212 | ||
74531fed | 213 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 214 | |
e3594fd1 | 215 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 216 | |
d962ef82 DJ |
217 | static int remote_read_description_p (struct target_ops *target); |
218 | ||
176a6961 | 219 | static void remote_console_output (char *msg); |
dde08ee1 | 220 | |
efcc2da7 | 221 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 222 | |
78eff0ec | 223 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 224 | |
f4abbc16 MM |
225 | static void remote_btrace_reset (void); |
226 | ||
c0272db5 TW |
227 | static void remote_btrace_maybe_reopen (void); |
228 | ||
221e1a37 PA |
229 | static int stop_reply_queue_length (void); |
230 | ||
80152258 PA |
231 | static void readahead_cache_invalidate (void); |
232 | ||
048094ac PA |
233 | static void remote_unpush_and_throw (void); |
234 | ||
b6bb3468 PA |
235 | static struct remote_state *get_remote_state (void); |
236 | ||
a6b151f1 DJ |
237 | /* For "remote". */ |
238 | ||
239 | static struct cmd_list_element *remote_cmdlist; | |
240 | ||
bb572ddd DJ |
241 | /* For "set remote" and "show remote". */ |
242 | ||
243 | static struct cmd_list_element *remote_set_cmdlist; | |
244 | static struct cmd_list_element *remote_show_cmdlist; | |
245 | ||
d458bd84 PA |
246 | /* Stub vCont actions support. |
247 | ||
248 | Each field is a boolean flag indicating whether the stub reports | |
249 | support for the corresponding action. */ | |
250 | ||
251 | struct vCont_action_support | |
252 | { | |
253 | /* vCont;t */ | |
254 | int t; | |
c1e36e3e PA |
255 | |
256 | /* vCont;r */ | |
257 | int r; | |
750ce8d1 YQ |
258 | |
259 | /* vCont;s */ | |
260 | int s; | |
261 | ||
262 | /* vCont;S */ | |
263 | int S; | |
d458bd84 PA |
264 | }; |
265 | ||
c1e36e3e PA |
266 | /* Controls whether GDB is willing to use range stepping. */ |
267 | ||
268 | static int use_range_stepping = 1; | |
269 | ||
0d031856 TT |
270 | #define OPAQUETHREADBYTES 8 |
271 | ||
272 | /* a 64 bit opaque identifier */ | |
273 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
274 | ||
275 | /* About this many threadisds fit in a packet. */ | |
276 | ||
277 | #define MAXTHREADLISTRESULTS 32 | |
278 | ||
6f8976bf YQ |
279 | /* The max number of chars in debug output. The rest of chars are |
280 | omitted. */ | |
281 | ||
282 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
283 | ||
80152258 PA |
284 | /* Data for the vFile:pread readahead cache. */ |
285 | ||
286 | struct readahead_cache | |
287 | { | |
288 | /* The file descriptor for the file that is being cached. -1 if the | |
289 | cache is invalid. */ | |
290 | int fd; | |
291 | ||
292 | /* The offset into the file that the cache buffer corresponds | |
293 | to. */ | |
294 | ULONGEST offset; | |
295 | ||
296 | /* The buffer holding the cache contents. */ | |
297 | gdb_byte *buf; | |
298 | /* The buffer's size. We try to read as much as fits into a packet | |
299 | at a time. */ | |
300 | size_t bufsize; | |
301 | ||
302 | /* Cache hit and miss counters. */ | |
303 | ULONGEST hit_count; | |
304 | ULONGEST miss_count; | |
305 | }; | |
306 | ||
ea9c271d DJ |
307 | /* Description of the remote protocol state for the currently |
308 | connected target. This is per-target state, and independent of the | |
309 | selected architecture. */ | |
310 | ||
311 | struct remote_state | |
312 | { | |
313 | /* A buffer to use for incoming packets, and its current size. The | |
314 | buffer is grown dynamically for larger incoming packets. | |
315 | Outgoing packets may also be constructed in this buffer. | |
316 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
317 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
318 | packets. */ | |
319 | char *buf; | |
320 | long buf_size; | |
be2a5f71 | 321 | |
1e51243a PA |
322 | /* True if we're going through initial connection setup (finding out |
323 | about the remote side's threads, relocating symbols, etc.). */ | |
324 | int starting_up; | |
325 | ||
be2a5f71 DJ |
326 | /* If we negotiated packet size explicitly (and thus can bypass |
327 | heuristics for the largest packet size that will not overflow | |
328 | a buffer in the stub), this will be set to that packet size. | |
329 | Otherwise zero, meaning to use the guessed size. */ | |
330 | long explicit_packet_size; | |
2d717e4f DJ |
331 | |
332 | /* remote_wait is normally called when the target is running and | |
333 | waits for a stop reply packet. But sometimes we need to call it | |
334 | when the target is already stopped. We can send a "?" packet | |
335 | and have remote_wait read the response. Or, if we already have | |
336 | the response, we can stash it in BUF and tell remote_wait to | |
337 | skip calling getpkt. This flag is set when BUF contains a | |
338 | stop reply packet and the target is not waiting. */ | |
339 | int cached_wait_status; | |
a6f3e723 SL |
340 | |
341 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
342 | expect acks from each other. The connection is assumed to be | |
343 | reliable. */ | |
344 | int noack_mode; | |
82f73884 PA |
345 | |
346 | /* True if we're connected in extended remote mode. */ | |
347 | int extended; | |
348 | ||
e24a49d8 PA |
349 | /* True if we resumed the target and we're waiting for the target to |
350 | stop. In the mean time, we can't start another command/query. | |
351 | The remote server wouldn't be ready to process it, so we'd | |
352 | timeout waiting for a reply that would never come and eventually | |
353 | we'd close the connection. This can happen in asynchronous mode | |
354 | because we allow GDB commands while the target is running. */ | |
355 | int waiting_for_stop_reply; | |
74531fed | 356 | |
d458bd84 PA |
357 | /* The status of the stub support for the various vCont actions. */ |
358 | struct vCont_action_support supports_vCont; | |
782b2b07 | 359 | |
3a29589a DJ |
360 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
361 | responded to that. */ | |
362 | int ctrlc_pending_p; | |
5d93a237 | 363 | |
048094ac PA |
364 | /* True if we saw a Ctrl-C while reading or writing from/to the |
365 | remote descriptor. At that point it is not safe to send a remote | |
366 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
367 | process it once we're done with sending/receiving the current | |
368 | packet, which should be shortly. If however that takes too long, | |
369 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
370 | int got_ctrlc_during_io; | |
371 | ||
5d93a237 TT |
372 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
373 | remote_open knows that we don't have a file open when the program | |
374 | starts. */ | |
375 | struct serial *remote_desc; | |
47f8a51d TT |
376 | |
377 | /* These are the threads which we last sent to the remote system. The | |
378 | TID member will be -1 for all or -2 for not sent yet. */ | |
379 | ptid_t general_thread; | |
380 | ptid_t continue_thread; | |
262e1174 TT |
381 | |
382 | /* This is the traceframe which we last selected on the remote system. | |
383 | It will be -1 if no traceframe is selected. */ | |
384 | int remote_traceframe_number; | |
747dc59d TT |
385 | |
386 | char *last_pass_packet; | |
5e4a05c4 TT |
387 | |
388 | /* The last QProgramSignals packet sent to the target. We bypass | |
389 | sending a new program signals list down to the target if the new | |
390 | packet is exactly the same as the last we sent. IOW, we only let | |
391 | the target know about program signals list changes. */ | |
392 | char *last_program_signals_packet; | |
b73be471 TT |
393 | |
394 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
395 | |
396 | int last_sent_step; | |
8e88304f | 397 | |
3a00c802 PA |
398 | /* The execution direction of the last resume we got. */ |
399 | enum exec_direction_kind last_resume_exec_dir; | |
400 | ||
8e88304f TT |
401 | char *finished_object; |
402 | char *finished_annex; | |
403 | ULONGEST finished_offset; | |
b80fafe3 TT |
404 | |
405 | /* Should we try the 'ThreadInfo' query packet? | |
406 | ||
407 | This variable (NOT available to the user: auto-detect only!) | |
408 | determines whether GDB will use the new, simpler "ThreadInfo" | |
409 | query or the older, more complex syntax for thread queries. | |
410 | This is an auto-detect variable (set to true at each connect, | |
411 | and set to false when the target fails to recognize it). */ | |
412 | int use_threadinfo_query; | |
413 | int use_threadextra_query; | |
88b496c3 | 414 | |
0d031856 TT |
415 | threadref echo_nextthread; |
416 | threadref nextthread; | |
417 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
418 | |
419 | /* The state of remote notification. */ | |
420 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
421 | |
422 | /* The branch trace configuration. */ | |
423 | struct btrace_config btrace_config; | |
15a201c8 GB |
424 | |
425 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
426 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
427 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
428 | has yet been sent. */ | |
429 | int fs_pid; | |
80152258 PA |
430 | |
431 | /* A readahead cache for vFile:pread. Often, reading a binary | |
432 | involves a sequence of small reads. E.g., when parsing an ELF | |
433 | file. A readahead cache helps mostly the case of remote | |
434 | debugging on a connection with higher latency, due to the | |
435 | request/reply nature of the RSP. We only cache data for a single | |
436 | file descriptor at a time. */ | |
437 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
438 | }; |
439 | ||
7aabaf9d SM |
440 | /* Private data that we'll store in (struct thread_info)->priv. */ |
441 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 442 | { |
7aabaf9d SM |
443 | std::string extra; |
444 | std::string name; | |
445 | int core = -1; | |
799a2abe | 446 | |
f6327dcb KB |
447 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
448 | sequence of bytes. */ | |
7aabaf9d | 449 | gdb::byte_vector thread_handle; |
f6327dcb | 450 | |
799a2abe | 451 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 452 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
453 | |
454 | /* This is set to the data address of the access causing the target | |
455 | to stop for a watchpoint. */ | |
7aabaf9d | 456 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
457 | |
458 | /* Fields used by the vCont action coalescing implemented in | |
459 | remote_resume / remote_commit_resume. remote_resume stores each | |
460 | thread's last resume request in these fields, so that a later | |
461 | remote_commit_resume knows which is the proper action for this | |
462 | thread to include in the vCont packet. */ | |
463 | ||
464 | /* True if the last target_resume call for this thread was a step | |
465 | request, false if a continue request. */ | |
7aabaf9d | 466 | int last_resume_step = 0; |
85ad3aaf PA |
467 | |
468 | /* The signal specified in the last target_resume call for this | |
469 | thread. */ | |
7aabaf9d | 470 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
471 | |
472 | /* Whether this thread was already vCont-resumed on the remote | |
473 | side. */ | |
7aabaf9d | 474 | int vcont_resumed = 0; |
dc146f7c VP |
475 | }; |
476 | ||
ea9c271d DJ |
477 | /* This data could be associated with a target, but we do not always |
478 | have access to the current target when we need it, so for now it is | |
479 | static. This will be fine for as long as only one target is in use | |
480 | at a time. */ | |
cf792862 | 481 | static struct remote_state *remote_state; |
ea9c271d DJ |
482 | |
483 | static struct remote_state * | |
0b83947e | 484 | get_remote_state_raw (void) |
ea9c271d | 485 | { |
cf792862 TT |
486 | return remote_state; |
487 | } | |
488 | ||
489 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
490 | return it. */ | |
491 | ||
492 | static struct remote_state * | |
493 | new_remote_state (void) | |
494 | { | |
495 | struct remote_state *result = XCNEW (struct remote_state); | |
496 | ||
497 | /* The default buffer size is unimportant; it will be expanded | |
498 | whenever a larger buffer is needed. */ | |
499 | result->buf_size = 400; | |
224c3ddb | 500 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 501 | result->remote_traceframe_number = -1; |
b73be471 | 502 | result->last_sent_signal = GDB_SIGNAL_0; |
3a00c802 | 503 | result->last_resume_exec_dir = EXEC_FORWARD; |
15a201c8 | 504 | result->fs_pid = -1; |
cf792862 TT |
505 | |
506 | return result; | |
ea9c271d DJ |
507 | } |
508 | ||
509 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 510 | |
ad10f812 AC |
511 | struct packet_reg |
512 | { | |
513 | long offset; /* Offset into G packet. */ | |
514 | long regnum; /* GDB's internal register number. */ | |
515 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 516 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 517 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 518 | at present. */ |
f5656ead | 519 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 520 | at present. */ |
ad10f812 AC |
521 | }; |
522 | ||
ea9c271d | 523 | struct remote_arch_state |
d01949b6 | 524 | { |
ad10f812 AC |
525 | /* Description of the remote protocol registers. */ |
526 | long sizeof_g_packet; | |
b323314b AC |
527 | |
528 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 529 | (making an array gdbarch_num_regs in size). */ |
b323314b | 530 | struct packet_reg *regs; |
ad10f812 | 531 | |
d01949b6 AC |
532 | /* This is the size (in chars) of the first response to the ``g'' |
533 | packet. It is used as a heuristic when determining the maximum | |
534 | size of memory-read and memory-write packets. A target will | |
535 | typically only reserve a buffer large enough to hold the ``g'' | |
536 | packet. The size does not include packet overhead (headers and | |
23860348 | 537 | trailers). */ |
d01949b6 AC |
538 | long actual_register_packet_size; |
539 | ||
540 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 541 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
542 | long remote_packet_size; |
543 | }; | |
544 | ||
35b1e5cc SS |
545 | /* Utility: generate error from an incoming stub packet. */ |
546 | static void | |
547 | trace_error (char *buf) | |
548 | { | |
549 | if (*buf++ != 'E') | |
550 | return; /* not an error msg */ | |
551 | switch (*buf) | |
552 | { | |
553 | case '1': /* malformed packet error */ | |
554 | if (*++buf == '0') /* general case: */ | |
555 | error (_("remote.c: error in outgoing packet.")); | |
556 | else | |
557 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
558 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
559 | default: |
560 | error (_("Target returns error code '%s'."), buf); | |
561 | } | |
562 | } | |
563 | ||
564 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 565 | |
35b1e5cc | 566 | static char * |
b6bb3468 | 567 | remote_get_noisy_reply () |
35b1e5cc | 568 | { |
b6bb3468 PA |
569 | struct remote_state *rs = get_remote_state (); |
570 | ||
35b1e5cc SS |
571 | do /* Loop on reply from remote stub. */ |
572 | { | |
573 | char *buf; | |
a744cf53 | 574 | |
0df8b418 | 575 | QUIT; /* Allow user to bail out with ^C. */ |
b6bb3468 PA |
576 | getpkt (&rs->buf, &rs->buf_size, 0); |
577 | buf = rs->buf; | |
ad91cd99 | 578 | if (buf[0] == 'E') |
35b1e5cc | 579 | trace_error (buf); |
61012eef | 580 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
581 | { |
582 | ULONGEST ul; | |
583 | CORE_ADDR from, to, org_to; | |
256642e8 | 584 | const char *p, *pp; |
dde08ee1 | 585 | int adjusted_size = 0; |
7556d4a4 | 586 | int relocated = 0; |
dde08ee1 PA |
587 | |
588 | p = buf + strlen ("qRelocInsn:"); | |
589 | pp = unpack_varlen_hex (p, &ul); | |
590 | if (*pp != ';') | |
cb91c06a | 591 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
592 | from = ul; |
593 | ||
594 | p = pp + 1; | |
a9cbf802 | 595 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
596 | to = ul; |
597 | ||
598 | org_to = to; | |
599 | ||
492d29ea | 600 | TRY |
dde08ee1 | 601 | { |
f5656ead | 602 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 603 | relocated = 1; |
dde08ee1 | 604 | } |
492d29ea | 605 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
606 | { |
607 | if (ex.error == MEMORY_ERROR) | |
608 | { | |
609 | /* Propagate memory errors silently back to the | |
610 | target. The stub may have limited the range of | |
611 | addresses we can write to, for example. */ | |
612 | } | |
613 | else | |
614 | { | |
615 | /* Something unexpectedly bad happened. Be verbose | |
616 | so we can tell what, and propagate the error back | |
617 | to the stub, so it doesn't get stuck waiting for | |
618 | a response. */ | |
619 | exception_fprintf (gdb_stderr, ex, | |
620 | _("warning: relocating instruction: ")); | |
621 | } | |
622 | putpkt ("E01"); | |
623 | } | |
492d29ea | 624 | END_CATCH |
7556d4a4 PA |
625 | |
626 | if (relocated) | |
dde08ee1 PA |
627 | { |
628 | adjusted_size = to - org_to; | |
629 | ||
b6bb3468 | 630 | xsnprintf (buf, rs->buf_size, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
631 | putpkt (buf); |
632 | } | |
dde08ee1 | 633 | } |
ad91cd99 | 634 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
635 | remote_console_output (buf + 1); /* 'O' message from stub */ |
636 | else | |
0df8b418 | 637 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
638 | } |
639 | while (1); | |
640 | } | |
3c3bea1c | 641 | |
d01949b6 AC |
642 | /* Handle for retreving the remote protocol data from gdbarch. */ |
643 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
644 | ||
ea9c271d | 645 | static struct remote_arch_state * |
5cd63fda | 646 | get_remote_arch_state (struct gdbarch *gdbarch) |
d01949b6 | 647 | { |
5cd63fda | 648 | gdb_assert (gdbarch != NULL); |
19ba03f4 | 649 | return ((struct remote_arch_state *) |
5cd63fda | 650 | gdbarch_data (gdbarch, remote_gdbarch_data_handle)); |
d01949b6 AC |
651 | } |
652 | ||
0b83947e DJ |
653 | /* Fetch the global remote target state. */ |
654 | ||
655 | static struct remote_state * | |
656 | get_remote_state (void) | |
657 | { | |
658 | /* Make sure that the remote architecture state has been | |
659 | initialized, because doing so might reallocate rs->buf. Any | |
660 | function which calls getpkt also needs to be mindful of changes | |
661 | to rs->buf, but this call limits the number of places which run | |
662 | into trouble. */ | |
5cd63fda | 663 | get_remote_arch_state (target_gdbarch ()); |
0b83947e DJ |
664 | |
665 | return get_remote_state_raw (); | |
666 | } | |
667 | ||
94585166 DB |
668 | /* Cleanup routine for the remote module's pspace data. */ |
669 | ||
670 | static void | |
671 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
672 | { | |
19ba03f4 | 673 | char *remote_exec_file = (char *) arg; |
94585166 DB |
674 | |
675 | xfree (remote_exec_file); | |
676 | } | |
677 | ||
678 | /* Fetch the remote exec-file from the current program space. */ | |
679 | ||
680 | static const char * | |
681 | get_remote_exec_file (void) | |
682 | { | |
683 | char *remote_exec_file; | |
684 | ||
19ba03f4 SM |
685 | remote_exec_file |
686 | = (char *) program_space_data (current_program_space, | |
687 | remote_pspace_data); | |
94585166 DB |
688 | if (remote_exec_file == NULL) |
689 | return ""; | |
690 | ||
691 | return remote_exec_file; | |
692 | } | |
693 | ||
694 | /* Set the remote exec file for PSPACE. */ | |
695 | ||
696 | static void | |
697 | set_pspace_remote_exec_file (struct program_space *pspace, | |
698 | char *remote_exec_file) | |
699 | { | |
19ba03f4 | 700 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
701 | |
702 | xfree (old_file); | |
703 | set_program_space_data (pspace, remote_pspace_data, | |
704 | xstrdup (remote_exec_file)); | |
705 | } | |
706 | ||
707 | /* The "set/show remote exec-file" set command hook. */ | |
708 | ||
709 | static void | |
eb4c3f4a | 710 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
711 | struct cmd_list_element *c) |
712 | { | |
713 | gdb_assert (remote_exec_file_var != NULL); | |
714 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
715 | } | |
716 | ||
717 | /* The "set/show remote exec-file" show command hook. */ | |
718 | ||
719 | static void | |
720 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
721 | struct cmd_list_element *cmd, const char *value) | |
722 | { | |
723 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
724 | } | |
725 | ||
74ca34ce DJ |
726 | static int |
727 | compare_pnums (const void *lhs_, const void *rhs_) | |
728 | { | |
19ba03f4 SM |
729 | const struct packet_reg * const *lhs |
730 | = (const struct packet_reg * const *) lhs_; | |
731 | const struct packet_reg * const *rhs | |
732 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
733 | |
734 | if ((*lhs)->pnum < (*rhs)->pnum) | |
735 | return -1; | |
736 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
737 | return 0; | |
738 | else | |
739 | return 1; | |
740 | } | |
741 | ||
c21236dc PA |
742 | static int |
743 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 744 | { |
74ca34ce | 745 | int regnum, num_remote_regs, offset; |
74ca34ce | 746 | struct packet_reg **remote_regs; |
ea9c271d | 747 | |
4a22f64d | 748 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 749 | { |
c21236dc | 750 | struct packet_reg *r = ®s[regnum]; |
baef701f | 751 | |
4a22f64d | 752 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
753 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
754 | r->pnum = -1; | |
755 | else | |
756 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
757 | ||
b323314b | 758 | r->regnum = regnum; |
74ca34ce DJ |
759 | } |
760 | ||
761 | /* Define the g/G packet format as the contents of each register | |
762 | with a remote protocol number, in order of ascending protocol | |
763 | number. */ | |
764 | ||
224c3ddb | 765 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 766 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 767 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 768 | regnum++) |
c21236dc PA |
769 | if (regs[regnum].pnum != -1) |
770 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 771 | |
74ca34ce DJ |
772 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
773 | compare_pnums); | |
774 | ||
775 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
776 | { | |
777 | remote_regs[regnum]->in_g_packet = 1; | |
778 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 779 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
780 | } |
781 | ||
c21236dc PA |
782 | return offset; |
783 | } | |
784 | ||
785 | /* Given the architecture described by GDBARCH, return the remote | |
786 | protocol register's number and the register's offset in the g/G | |
787 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
788 | If the target does not have a mapping for REGNUM, return false, | |
789 | otherwise, return true. */ | |
790 | ||
791 | int | |
792 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
793 | int *pnum, int *poffset) | |
794 | { | |
c21236dc PA |
795 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
796 | ||
b80406ac | 797 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 798 | |
b80406ac | 799 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
800 | |
801 | *pnum = regs[regnum].pnum; | |
802 | *poffset = regs[regnum].offset; | |
803 | ||
c21236dc PA |
804 | return *pnum != -1; |
805 | } | |
806 | ||
807 | static void * | |
808 | init_remote_state (struct gdbarch *gdbarch) | |
809 | { | |
810 | struct remote_state *rs = get_remote_state_raw (); | |
811 | struct remote_arch_state *rsa; | |
812 | ||
813 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
814 | ||
815 | /* Use the architecture to build a regnum<->pnum table, which will be | |
816 | 1:1 unless a feature set specifies otherwise. */ | |
817 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
818 | gdbarch_num_regs (gdbarch), | |
819 | struct packet_reg); | |
820 | ||
74ca34ce DJ |
821 | /* Record the maximum possible size of the g packet - it may turn out |
822 | to be smaller. */ | |
c21236dc | 823 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 824 | |
0df8b418 | 825 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
826 | remote stubs have a hardwired buffer size of 400 bytes |
827 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
828 | as the maximum packet-size to ensure that the packet and an extra | |
829 | NUL character can always fit in the buffer. This stops GDB | |
830 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
831 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
832 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 833 | |
ea9c271d DJ |
834 | /* This one is filled in when a ``g'' packet is received. */ |
835 | rsa->actual_register_packet_size = 0; | |
836 | ||
837 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
838 | default, adjust the size accordingly. Remember that each byte is |
839 | encoded as two characters. 32 is the overhead for the packet | |
840 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 841 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 842 | little. */ |
ea9c271d DJ |
843 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
844 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 845 | |
ea9c271d DJ |
846 | /* Make sure that the packet buffer is plenty big enough for |
847 | this architecture. */ | |
848 | if (rs->buf_size < rsa->remote_packet_size) | |
849 | { | |
850 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 851 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 852 | } |
6d820c5c | 853 | |
ea9c271d DJ |
854 | return rsa; |
855 | } | |
856 | ||
857 | /* Return the current allowed size of a remote packet. This is | |
858 | inferred from the current architecture, and should be used to | |
859 | limit the length of outgoing packets. */ | |
860 | static long | |
861 | get_remote_packet_size (void) | |
862 | { | |
be2a5f71 | 863 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 864 | remote_arch_state *rsa = get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 865 | |
be2a5f71 DJ |
866 | if (rs->explicit_packet_size) |
867 | return rs->explicit_packet_size; | |
868 | ||
ea9c271d | 869 | return rsa->remote_packet_size; |
d01949b6 AC |
870 | } |
871 | ||
ad10f812 | 872 | static struct packet_reg * |
5cd63fda PA |
873 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
874 | long regnum) | |
ad10f812 | 875 | { |
5cd63fda | 876 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
877 | return NULL; |
878 | else | |
ad10f812 | 879 | { |
ea9c271d | 880 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 881 | |
b323314b AC |
882 | gdb_assert (r->regnum == regnum); |
883 | return r; | |
ad10f812 | 884 | } |
ad10f812 AC |
885 | } |
886 | ||
887 | static struct packet_reg * | |
5cd63fda PA |
888 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
889 | LONGEST pnum) | |
ad10f812 | 890 | { |
b323314b | 891 | int i; |
a744cf53 | 892 | |
5cd63fda | 893 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 894 | { |
ea9c271d | 895 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 896 | |
b323314b AC |
897 | if (r->pnum == pnum) |
898 | return r; | |
ad10f812 AC |
899 | } |
900 | return NULL; | |
d01949b6 AC |
901 | } |
902 | ||
c906108c SS |
903 | static struct target_ops remote_ops; |
904 | ||
905 | static struct target_ops extended_remote_ops; | |
906 | ||
6426a772 JM |
907 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
908 | ``forever'' still use the normal timeout mechanism. This is | |
909 | currently used by the ASYNC code to guarentee that target reads | |
910 | during the initial connect always time-out. Once getpkt has been | |
911 | modified to return a timeout indication and, in turn | |
912 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 913 | this can go away. */ |
6426a772 JM |
914 | static int wait_forever_enabled_p = 1; |
915 | ||
9a7071a8 JB |
916 | /* Allow the user to specify what sequence to send to the remote |
917 | when he requests a program interruption: Although ^C is usually | |
918 | what remote systems expect (this is the default, here), it is | |
919 | sometimes preferable to send a break. On other systems such | |
920 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
921 | is required in order to interrupt the execution. */ | |
922 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
923 | const char interrupt_sequence_break[] = "BREAK"; | |
924 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 925 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
926 | { |
927 | interrupt_sequence_control_c, | |
928 | interrupt_sequence_break, | |
929 | interrupt_sequence_break_g, | |
930 | NULL | |
931 | }; | |
932 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
933 | ||
934 | static void | |
935 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
936 | struct cmd_list_element *c, | |
937 | const char *value) | |
938 | { | |
939 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
940 | fprintf_filtered (file, | |
941 | _("Send the ASCII ETX character (Ctrl-c) " | |
942 | "to the remote target to interrupt the " | |
943 | "execution of the program.\n")); | |
944 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
945 | fprintf_filtered (file, | |
946 | _("send a break signal to the remote target " | |
947 | "to interrupt the execution of the program.\n")); | |
948 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
949 | fprintf_filtered (file, | |
950 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
951 | "the remote target to interrupt the execution " | |
952 | "of Linux kernel.\n")); | |
953 | else | |
954 | internal_error (__FILE__, __LINE__, | |
955 | _("Invalid value for interrupt_sequence_mode: %s."), | |
956 | interrupt_sequence_mode); | |
957 | } | |
6426a772 | 958 | |
9a7071a8 JB |
959 | /* This boolean variable specifies whether interrupt_sequence is sent |
960 | to the remote target when gdb connects to it. | |
961 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
962 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
963 | static int interrupt_on_connect = 0; | |
c906108c | 964 | |
9a7071a8 JB |
965 | /* This variable is used to implement the "set/show remotebreak" commands. |
966 | Since these commands are now deprecated in favor of "set/show remote | |
967 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
968 | static int remote_break; |
969 | ||
9a7071a8 | 970 | static void |
eb4c3f4a | 971 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
972 | { |
973 | if (remote_break) | |
974 | interrupt_sequence_mode = interrupt_sequence_break; | |
975 | else | |
976 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
977 | } | |
978 | ||
979 | static void | |
980 | show_remotebreak (struct ui_file *file, int from_tty, | |
981 | struct cmd_list_element *c, | |
982 | const char *value) | |
983 | { | |
984 | } | |
985 | ||
c906108c SS |
986 | /* This variable sets the number of bits in an address that are to be |
987 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 988 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
989 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
990 | initial implementation of remote.c restricted the address sent in | |
991 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
992 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
993 | address was never sent. Since fixing this bug may cause a break in | |
994 | some remote targets this variable is principly provided to | |
23860348 | 995 | facilitate backward compatibility. */ |
c906108c | 996 | |
883b9c6c | 997 | static unsigned int remote_address_size; |
c906108c | 998 | |
11cf8741 | 999 | \f |
11cf8741 | 1000 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1001 | memory read/write packet. MIN (rsa->remote_packet_size, |
1002 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1003 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1004 | (speed up transfers). The variables ``preferred_*'' (the user |
1005 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1006 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1007 | |
1008 | struct memory_packet_config | |
1009 | { | |
a121b7c1 | 1010 | const char *name; |
11cf8741 JM |
1011 | long size; |
1012 | int fixed_p; | |
1013 | }; | |
1014 | ||
a5c0808e PA |
1015 | /* The default max memory-write-packet-size. The 16k is historical. |
1016 | (It came from older GDB's using alloca for buffers and the | |
1017 | knowledge (folklore?) that some hosts don't cope very well with | |
1018 | large alloca calls.) */ | |
1019 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1020 | ||
1021 | /* The minimum remote packet size for memory transfers. Ensures we | |
1022 | can write at least one byte. */ | |
1023 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1024 | ||
11cf8741 JM |
1025 | /* Compute the current size of a read/write packet. Since this makes |
1026 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1027 | ||
1028 | static long | |
1029 | get_memory_packet_size (struct memory_packet_config *config) | |
1030 | { | |
d01949b6 | 1031 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 1032 | remote_arch_state *rsa = get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1033 | |
11cf8741 JM |
1034 | long what_they_get; |
1035 | if (config->fixed_p) | |
1036 | { | |
1037 | if (config->size <= 0) | |
a5c0808e | 1038 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1039 | else |
1040 | what_they_get = config->size; | |
1041 | } | |
1042 | else | |
1043 | { | |
ea9c271d | 1044 | what_they_get = get_remote_packet_size (); |
23860348 | 1045 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1046 | if (config->size > 0 |
1047 | && what_they_get > config->size) | |
1048 | what_they_get = config->size; | |
be2a5f71 DJ |
1049 | |
1050 | /* Limit it to the size of the targets ``g'' response unless we have | |
1051 | permission from the stub to use a larger packet size. */ | |
1052 | if (rs->explicit_packet_size == 0 | |
1053 | && rsa->actual_register_packet_size > 0 | |
1054 | && what_they_get > rsa->actual_register_packet_size) | |
1055 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1056 | } |
a5c0808e PA |
1057 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1058 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1059 | |
1060 | /* Make sure there is room in the global buffer for this packet | |
1061 | (including its trailing NUL byte). */ | |
1062 | if (rs->buf_size < what_they_get + 1) | |
1063 | { | |
1064 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1065 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1066 | } |
1067 | ||
11cf8741 JM |
1068 | return what_they_get; |
1069 | } | |
1070 | ||
0df8b418 | 1071 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1072 | something really big then do a sanity check. */ |
11cf8741 JM |
1073 | |
1074 | static void | |
ac88e2de | 1075 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1076 | { |
1077 | int fixed_p = config->fixed_p; | |
1078 | long size = config->size; | |
a744cf53 | 1079 | |
11cf8741 | 1080 | if (args == NULL) |
8a3fe4f8 | 1081 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1082 | else if (strcmp (args, "hard") == 0 |
1083 | || strcmp (args, "fixed") == 0) | |
1084 | fixed_p = 1; | |
1085 | else if (strcmp (args, "soft") == 0 | |
1086 | || strcmp (args, "limit") == 0) | |
1087 | fixed_p = 0; | |
1088 | else | |
1089 | { | |
1090 | char *end; | |
a744cf53 | 1091 | |
11cf8741 JM |
1092 | size = strtoul (args, &end, 0); |
1093 | if (args == end) | |
8a3fe4f8 | 1094 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1095 | |
1096 | /* Instead of explicitly capping the size of a packet to or | |
1097 | disallowing it, the user is allowed to set the size to | |
1098 | something arbitrarily large. */ | |
11cf8741 | 1099 | } |
a5c0808e PA |
1100 | |
1101 | /* So that the query shows the correct value. */ | |
1102 | if (size <= 0) | |
1103 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1104 | ||
23860348 | 1105 | /* Extra checks? */ |
11cf8741 JM |
1106 | if (fixed_p && !config->fixed_p) |
1107 | { | |
e2e0b3e5 AC |
1108 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1109 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1110 | config->name, size)) |
8a3fe4f8 | 1111 | error (_("Packet size not changed.")); |
11cf8741 | 1112 | } |
23860348 | 1113 | /* Update the config. */ |
11cf8741 JM |
1114 | config->fixed_p = fixed_p; |
1115 | config->size = size; | |
1116 | } | |
1117 | ||
1118 | static void | |
1119 | show_memory_packet_size (struct memory_packet_config *config) | |
1120 | { | |
a3f17187 | 1121 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1122 | if (config->fixed_p) |
a3f17187 | 1123 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1124 | get_memory_packet_size (config)); |
1125 | else | |
a3f17187 | 1126 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1127 | get_memory_packet_size (config)); |
1128 | } | |
1129 | ||
1130 | static struct memory_packet_config memory_write_packet_config = | |
1131 | { | |
1132 | "memory-write-packet-size", | |
1133 | }; | |
1134 | ||
1135 | static void | |
ac88e2de | 1136 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1137 | { |
1138 | set_memory_packet_size (args, &memory_write_packet_config); | |
1139 | } | |
1140 | ||
1141 | static void | |
ac88e2de | 1142 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1143 | { |
1144 | show_memory_packet_size (&memory_write_packet_config); | |
1145 | } | |
1146 | ||
1147 | static long | |
1148 | get_memory_write_packet_size (void) | |
1149 | { | |
1150 | return get_memory_packet_size (&memory_write_packet_config); | |
1151 | } | |
1152 | ||
1153 | static struct memory_packet_config memory_read_packet_config = | |
1154 | { | |
1155 | "memory-read-packet-size", | |
1156 | }; | |
1157 | ||
1158 | static void | |
ac88e2de | 1159 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1160 | { |
1161 | set_memory_packet_size (args, &memory_read_packet_config); | |
1162 | } | |
1163 | ||
1164 | static void | |
ac88e2de | 1165 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1166 | { |
1167 | show_memory_packet_size (&memory_read_packet_config); | |
1168 | } | |
1169 | ||
1170 | static long | |
1171 | get_memory_read_packet_size (void) | |
1172 | { | |
1173 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1174 | |
11cf8741 JM |
1175 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1176 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1177 | increased beyond this. */ |
1178 | if (size > get_remote_packet_size ()) | |
1179 | size = get_remote_packet_size (); | |
11cf8741 JM |
1180 | return size; |
1181 | } | |
1182 | ||
11cf8741 | 1183 | \f |
5a2468f5 | 1184 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1185 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1186 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1187 | |
1188 | enum packet_support | |
1189 | { | |
1190 | PACKET_SUPPORT_UNKNOWN = 0, | |
1191 | PACKET_ENABLE, | |
1192 | PACKET_DISABLE | |
1193 | }; | |
1194 | ||
5a2468f5 JM |
1195 | struct packet_config |
1196 | { | |
bb572ddd DJ |
1197 | const char *name; |
1198 | const char *title; | |
4082afcc PA |
1199 | |
1200 | /* If auto, GDB auto-detects support for this packet or feature, | |
1201 | either through qSupported, or by trying the packet and looking | |
1202 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1203 | packet. If false, the packet is disabled. Configs that don't |
1204 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1205 | enum auto_boolean detect; |
4082afcc PA |
1206 | |
1207 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1208 | enum packet_support support; |
1209 | }; | |
1210 | ||
d471ea57 | 1211 | /* Analyze a packet's return value and update the packet config |
23860348 | 1212 | accordingly. */ |
d471ea57 AC |
1213 | |
1214 | enum packet_result | |
1215 | { | |
1216 | PACKET_ERROR, | |
1217 | PACKET_OK, | |
1218 | PACKET_UNKNOWN | |
1219 | }; | |
1220 | ||
4082afcc PA |
1221 | static enum packet_support packet_config_support (struct packet_config *config); |
1222 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1223 | |
1224 | static void | |
fba45db2 | 1225 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1226 | { |
a121b7c1 | 1227 | const char *support = "internal-error"; |
a744cf53 | 1228 | |
4082afcc | 1229 | switch (packet_config_support (config)) |
5a2468f5 JM |
1230 | { |
1231 | case PACKET_ENABLE: | |
1232 | support = "enabled"; | |
1233 | break; | |
1234 | case PACKET_DISABLE: | |
1235 | support = "disabled"; | |
1236 | break; | |
1237 | case PACKET_SUPPORT_UNKNOWN: | |
1238 | support = "unknown"; | |
1239 | break; | |
1240 | } | |
1241 | switch (config->detect) | |
1242 | { | |
7f19b9a2 | 1243 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1244 | printf_filtered (_("Support for the `%s' packet " |
1245 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1246 | config->name, support); |
5a2468f5 | 1247 | break; |
7f19b9a2 AC |
1248 | case AUTO_BOOLEAN_TRUE: |
1249 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1250 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1251 | config->name, support); | |
8e248173 | 1252 | break; |
5a2468f5 JM |
1253 | } |
1254 | } | |
1255 | ||
1256 | static void | |
bb572ddd DJ |
1257 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1258 | const char *title, int legacy) | |
d471ea57 | 1259 | { |
5a2468f5 JM |
1260 | char *set_doc; |
1261 | char *show_doc; | |
d471ea57 | 1262 | char *cmd_name; |
3ed07be4 | 1263 | |
5a2468f5 JM |
1264 | config->name = name; |
1265 | config->title = title; | |
b435e160 AC |
1266 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1267 | name, title); | |
3e43a32a MS |
1268 | show_doc = xstrprintf ("Show current use of remote " |
1269 | "protocol `%s' (%s) packet", | |
b435e160 | 1270 | name, title); |
d471ea57 | 1271 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1272 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1273 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1274 | &config->detect, set_doc, |
1275 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1276 | NULL, |
bb572ddd DJ |
1277 | show_remote_protocol_packet_cmd, |
1278 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1279 | /* The command code copies the documentation strings. */ |
1280 | xfree (set_doc); | |
1281 | xfree (show_doc); | |
23860348 | 1282 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1283 | if (legacy) |
1284 | { | |
1285 | char *legacy_name; | |
a744cf53 | 1286 | |
b435e160 | 1287 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1288 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1289 | &remote_set_cmdlist); |
d471ea57 | 1290 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1291 | &remote_show_cmdlist); |
d471ea57 | 1292 | } |
5a2468f5 JM |
1293 | } |
1294 | ||
d471ea57 | 1295 | static enum packet_result |
a76d924d | 1296 | packet_check_result (const char *buf) |
5a2468f5 | 1297 | { |
d471ea57 | 1298 | if (buf[0] != '\0') |
5a2468f5 | 1299 | { |
d471ea57 | 1300 | /* The stub recognized the packet request. Check that the |
23860348 | 1301 | operation succeeded. */ |
a76d924d DJ |
1302 | if (buf[0] == 'E' |
1303 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1304 | && buf[3] == '\0') | |
1305 | /* "Enn" - definitly an error. */ | |
1306 | return PACKET_ERROR; | |
1307 | ||
1308 | /* Always treat "E." as an error. This will be used for | |
1309 | more verbose error messages, such as E.memtypes. */ | |
1310 | if (buf[0] == 'E' && buf[1] == '.') | |
1311 | return PACKET_ERROR; | |
1312 | ||
1313 | /* The packet may or may not be OK. Just assume it is. */ | |
1314 | return PACKET_OK; | |
1315 | } | |
1316 | else | |
1317 | /* The stub does not support the packet. */ | |
1318 | return PACKET_UNKNOWN; | |
1319 | } | |
1320 | ||
1321 | static enum packet_result | |
1322 | packet_ok (const char *buf, struct packet_config *config) | |
1323 | { | |
1324 | enum packet_result result; | |
1325 | ||
4082afcc PA |
1326 | if (config->detect != AUTO_BOOLEAN_TRUE |
1327 | && config->support == PACKET_DISABLE) | |
1328 | internal_error (__FILE__, __LINE__, | |
1329 | _("packet_ok: attempt to use a disabled packet")); | |
1330 | ||
a76d924d DJ |
1331 | result = packet_check_result (buf); |
1332 | switch (result) | |
1333 | { | |
1334 | case PACKET_OK: | |
1335 | case PACKET_ERROR: | |
1336 | /* The stub recognized the packet request. */ | |
4082afcc | 1337 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1338 | { |
d471ea57 AC |
1339 | if (remote_debug) |
1340 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1341 | "Packet %s (%s) is supported\n", |
1342 | config->name, config->title); | |
d471ea57 | 1343 | config->support = PACKET_ENABLE; |
d471ea57 | 1344 | } |
a76d924d DJ |
1345 | break; |
1346 | case PACKET_UNKNOWN: | |
23860348 | 1347 | /* The stub does not support the packet. */ |
4082afcc PA |
1348 | if (config->detect == AUTO_BOOLEAN_AUTO |
1349 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1350 | { |
4082afcc PA |
1351 | /* If the stub previously indicated that the packet was |
1352 | supported then there is a protocol error. */ | |
1353 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1354 | config->name, config->title); | |
1355 | } | |
1356 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1357 | { | |
1358 | /* The user set it wrong. */ | |
1359 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1360 | config->name, config->title); | |
d471ea57 | 1361 | } |
4082afcc PA |
1362 | |
1363 | if (remote_debug) | |
1364 | fprintf_unfiltered (gdb_stdlog, | |
1365 | "Packet %s (%s) is NOT supported\n", | |
1366 | config->name, config->title); | |
1367 | config->support = PACKET_DISABLE; | |
a76d924d | 1368 | break; |
5a2468f5 | 1369 | } |
a76d924d DJ |
1370 | |
1371 | return result; | |
5a2468f5 JM |
1372 | } |
1373 | ||
444abaca DJ |
1374 | enum { |
1375 | PACKET_vCont = 0, | |
1376 | PACKET_X, | |
1377 | PACKET_qSymbol, | |
1378 | PACKET_P, | |
1379 | PACKET_p, | |
1380 | PACKET_Z0, | |
1381 | PACKET_Z1, | |
1382 | PACKET_Z2, | |
1383 | PACKET_Z3, | |
1384 | PACKET_Z4, | |
15a201c8 | 1385 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1386 | PACKET_vFile_open, |
1387 | PACKET_vFile_pread, | |
1388 | PACKET_vFile_pwrite, | |
1389 | PACKET_vFile_close, | |
1390 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1391 | PACKET_vFile_readlink, |
0a93529c | 1392 | PACKET_vFile_fstat, |
0876f84a | 1393 | PACKET_qXfer_auxv, |
23181151 | 1394 | PACKET_qXfer_features, |
c78fa86a | 1395 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1396 | PACKET_qXfer_libraries, |
2268b414 | 1397 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1398 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1399 | PACKET_qXfer_spu_read, |
1400 | PACKET_qXfer_spu_write, | |
07e059b5 | 1401 | PACKET_qXfer_osdata, |
dc146f7c | 1402 | PACKET_qXfer_threads, |
0fb4aa4b | 1403 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1404 | PACKET_qXfer_traceframe_info, |
169081d0 | 1405 | PACKET_qXfer_uib, |
711e434b | 1406 | PACKET_qGetTIBAddr, |
444abaca | 1407 | PACKET_qGetTLSAddr, |
be2a5f71 | 1408 | PACKET_qSupported, |
bd3eecc3 | 1409 | PACKET_qTStatus, |
89be2091 | 1410 | PACKET_QPassSignals, |
82075af2 | 1411 | PACKET_QCatchSyscalls, |
9b224c5e | 1412 | PACKET_QProgramSignals, |
bc3b087d | 1413 | PACKET_QSetWorkingDir, |
aefd8b33 | 1414 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1415 | PACKET_QEnvironmentHexEncoded, |
1416 | PACKET_QEnvironmentReset, | |
1417 | PACKET_QEnvironmentUnset, | |
936d2992 | 1418 | PACKET_qCRC, |
08388c79 | 1419 | PACKET_qSearch_memory, |
2d717e4f DJ |
1420 | PACKET_vAttach, |
1421 | PACKET_vRun, | |
a6f3e723 | 1422 | PACKET_QStartNoAckMode, |
82f73884 | 1423 | PACKET_vKill, |
4aa995e1 PA |
1424 | PACKET_qXfer_siginfo_read, |
1425 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1426 | PACKET_qAttached, |
4082afcc PA |
1427 | |
1428 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1429 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1430 | |
1431 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1432 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1433 | |
1434 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1435 | PACKET_BreakpointCommands, |
4082afcc PA |
1436 | |
1437 | /* Support for fast tracepoints. */ | |
7a697b8d | 1438 | PACKET_FastTracepoints, |
4082afcc PA |
1439 | |
1440 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1441 | PACKET_StaticTracepoints, |
4082afcc PA |
1442 | |
1443 | /* Support for installing tracepoints while a trace experiment is | |
1444 | running. */ | |
1e4d1764 | 1445 | PACKET_InstallInTrace, |
4082afcc | 1446 | |
40ab02ce MS |
1447 | PACKET_bc, |
1448 | PACKET_bs, | |
409873ef | 1449 | PACKET_TracepointSource, |
d914c394 | 1450 | PACKET_QAllow, |
78d85199 | 1451 | PACKET_qXfer_fdpic, |
03583c20 | 1452 | PACKET_QDisableRandomization, |
d1feda86 | 1453 | PACKET_QAgent, |
f6f899bf | 1454 | PACKET_QTBuffer_size, |
9accd112 MM |
1455 | PACKET_Qbtrace_off, |
1456 | PACKET_Qbtrace_bts, | |
b20a6524 | 1457 | PACKET_Qbtrace_pt, |
9accd112 | 1458 | PACKET_qXfer_btrace, |
4082afcc PA |
1459 | |
1460 | /* Support for the QNonStop packet. */ | |
1461 | PACKET_QNonStop, | |
1462 | ||
65706a29 PA |
1463 | /* Support for the QThreadEvents packet. */ |
1464 | PACKET_QThreadEvents, | |
1465 | ||
4082afcc PA |
1466 | /* Support for multi-process extensions. */ |
1467 | PACKET_multiprocess_feature, | |
1468 | ||
1469 | /* Support for enabling and disabling tracepoints while a trace | |
1470 | experiment is running. */ | |
1471 | PACKET_EnableDisableTracepoints_feature, | |
1472 | ||
1473 | /* Support for collecting strings using the tracenz bytecode. */ | |
1474 | PACKET_tracenz_feature, | |
1475 | ||
1476 | /* Support for continuing to run a trace experiment while GDB is | |
1477 | disconnected. */ | |
1478 | PACKET_DisconnectedTracing_feature, | |
1479 | ||
1480 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1481 | PACKET_augmented_libraries_svr4_read_feature, | |
1482 | ||
f4abbc16 MM |
1483 | /* Support for the qXfer:btrace-conf:read packet. */ |
1484 | PACKET_qXfer_btrace_conf, | |
1485 | ||
d33501a5 MM |
1486 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1487 | PACKET_Qbtrace_conf_bts_size, | |
1488 | ||
f7e6eed5 PA |
1489 | /* Support for swbreak+ feature. */ |
1490 | PACKET_swbreak_feature, | |
1491 | ||
1492 | /* Support for hwbreak+ feature. */ | |
1493 | PACKET_hwbreak_feature, | |
1494 | ||
89245bc0 DB |
1495 | /* Support for fork events. */ |
1496 | PACKET_fork_event_feature, | |
1497 | ||
1498 | /* Support for vfork events. */ | |
1499 | PACKET_vfork_event_feature, | |
1500 | ||
b20a6524 MM |
1501 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1502 | PACKET_Qbtrace_conf_pt_size, | |
1503 | ||
94585166 DB |
1504 | /* Support for exec events. */ |
1505 | PACKET_exec_event_feature, | |
1506 | ||
750ce8d1 YQ |
1507 | /* Support for query supported vCont actions. */ |
1508 | PACKET_vContSupported, | |
1509 | ||
de979965 PA |
1510 | /* Support remote CTRL-C. */ |
1511 | PACKET_vCtrlC, | |
1512 | ||
f2faf941 PA |
1513 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1514 | PACKET_no_resumed, | |
1515 | ||
444abaca DJ |
1516 | PACKET_MAX |
1517 | }; | |
506fb367 | 1518 | |
444abaca | 1519 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1520 | |
f7e6eed5 PA |
1521 | /* Returns the packet's corresponding "set remote foo-packet" command |
1522 | state. See struct packet_config for more details. */ | |
1523 | ||
1524 | static enum auto_boolean | |
1525 | packet_set_cmd_state (int packet) | |
1526 | { | |
1527 | return remote_protocol_packets[packet].detect; | |
1528 | } | |
1529 | ||
4082afcc PA |
1530 | /* Returns whether a given packet or feature is supported. This takes |
1531 | into account the state of the corresponding "set remote foo-packet" | |
1532 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1533 | |
4082afcc PA |
1534 | static enum packet_support |
1535 | packet_config_support (struct packet_config *config) | |
1536 | { | |
1537 | switch (config->detect) | |
444abaca | 1538 | { |
4082afcc PA |
1539 | case AUTO_BOOLEAN_TRUE: |
1540 | return PACKET_ENABLE; | |
1541 | case AUTO_BOOLEAN_FALSE: | |
1542 | return PACKET_DISABLE; | |
1543 | case AUTO_BOOLEAN_AUTO: | |
1544 | return config->support; | |
1545 | default: | |
1546 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1547 | } |
4082afcc PA |
1548 | } |
1549 | ||
1550 | /* Same as packet_config_support, but takes the packet's enum value as | |
1551 | argument. */ | |
1552 | ||
1553 | static enum packet_support | |
1554 | packet_support (int packet) | |
1555 | { | |
1556 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1557 | ||
1558 | return packet_config_support (config); | |
dc8acb97 MS |
1559 | } |
1560 | ||
5a2468f5 | 1561 | static void |
444abaca DJ |
1562 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1563 | struct cmd_list_element *c, | |
1564 | const char *value) | |
5a2468f5 | 1565 | { |
444abaca | 1566 | struct packet_config *packet; |
5a2468f5 | 1567 | |
444abaca DJ |
1568 | for (packet = remote_protocol_packets; |
1569 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1570 | packet++) | |
1571 | { | |
1572 | if (&packet->detect == c->var) | |
1573 | { | |
1574 | show_packet_config_cmd (packet); | |
1575 | return; | |
1576 | } | |
1577 | } | |
9b20d036 | 1578 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1579 | c->name); |
5a2468f5 JM |
1580 | } |
1581 | ||
d471ea57 AC |
1582 | /* Should we try one of the 'Z' requests? */ |
1583 | ||
1584 | enum Z_packet_type | |
1585 | { | |
1586 | Z_PACKET_SOFTWARE_BP, | |
1587 | Z_PACKET_HARDWARE_BP, | |
1588 | Z_PACKET_WRITE_WP, | |
1589 | Z_PACKET_READ_WP, | |
1590 | Z_PACKET_ACCESS_WP, | |
1591 | NR_Z_PACKET_TYPES | |
1592 | }; | |
96baa820 | 1593 | |
d471ea57 | 1594 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1595 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1596 | |
7f19b9a2 | 1597 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1598 | |
1599 | static void | |
eb4c3f4a | 1600 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 1601 | struct cmd_list_element *c) |
96baa820 | 1602 | { |
d471ea57 | 1603 | int i; |
a744cf53 | 1604 | |
d471ea57 | 1605 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1606 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1607 | } |
1608 | ||
1609 | static void | |
08546159 AC |
1610 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1611 | struct cmd_list_element *c, | |
1612 | const char *value) | |
96baa820 | 1613 | { |
d471ea57 | 1614 | int i; |
a744cf53 | 1615 | |
d471ea57 AC |
1616 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1617 | { | |
444abaca | 1618 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1619 | } |
96baa820 JM |
1620 | } |
1621 | ||
4082afcc PA |
1622 | /* Returns true if the multi-process extensions are in effect. */ |
1623 | ||
1624 | static int | |
1625 | remote_multi_process_p (struct remote_state *rs) | |
1626 | { | |
1627 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1628 | } | |
1629 | ||
de0d863e DB |
1630 | /* Returns true if fork events are supported. */ |
1631 | ||
1632 | static int | |
1633 | remote_fork_event_p (struct remote_state *rs) | |
1634 | { | |
1635 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1636 | } | |
1637 | ||
c269dbdb DB |
1638 | /* Returns true if vfork events are supported. */ |
1639 | ||
1640 | static int | |
1641 | remote_vfork_event_p (struct remote_state *rs) | |
1642 | { | |
1643 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1644 | } | |
1645 | ||
d46addbb DB |
1646 | /* Returns true if exec events are supported. */ |
1647 | ||
1648 | static int | |
1649 | remote_exec_event_p (struct remote_state *rs) | |
1650 | { | |
1651 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1652 | } | |
1653 | ||
cbb8991c DB |
1654 | /* Insert fork catchpoint target routine. If fork events are enabled |
1655 | then return success, nothing more to do. */ | |
1656 | ||
1657 | static int | |
1658 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1659 | { | |
1660 | struct remote_state *rs = get_remote_state (); | |
1661 | ||
1662 | return !remote_fork_event_p (rs); | |
1663 | } | |
1664 | ||
1665 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1666 | return success. */ | |
1667 | ||
1668 | static int | |
1669 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1670 | { | |
1671 | return 0; | |
1672 | } | |
1673 | ||
1674 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1675 | then return success, nothing more to do. */ | |
1676 | ||
1677 | static int | |
1678 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1679 | { | |
1680 | struct remote_state *rs = get_remote_state (); | |
1681 | ||
1682 | return !remote_vfork_event_p (rs); | |
1683 | } | |
1684 | ||
1685 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1686 | return success. */ | |
1687 | ||
1688 | static int | |
1689 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1690 | { | |
1691 | return 0; | |
1692 | } | |
1693 | ||
d46addbb DB |
1694 | /* Insert exec catchpoint target routine. If exec events are |
1695 | enabled, just return success. */ | |
1696 | ||
1697 | static int | |
1698 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1699 | { | |
1700 | struct remote_state *rs = get_remote_state (); | |
1701 | ||
1702 | return !remote_exec_event_p (rs); | |
1703 | } | |
1704 | ||
1705 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1706 | return success. */ | |
1707 | ||
1708 | static int | |
1709 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1710 | { | |
1711 | return 0; | |
1712 | } | |
1713 | ||
74531fed PA |
1714 | \f |
1715 | /* Asynchronous signal handle registered as event loop source for | |
1716 | when we have pending events ready to be passed to the core. */ | |
1717 | ||
1718 | static struct async_event_handler *remote_async_inferior_event_token; | |
1719 | ||
c906108c SS |
1720 | \f |
1721 | ||
79d7f229 PA |
1722 | static ptid_t magic_null_ptid; |
1723 | static ptid_t not_sent_ptid; | |
1724 | static ptid_t any_thread_ptid; | |
1725 | ||
0b16c5cf PA |
1726 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1727 | detach instead of killing it when bailing out). */ | |
1728 | ||
1729 | static int | |
1730 | remote_query_attached (int pid) | |
1731 | { | |
1732 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1733 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1734 | |
4082afcc | 1735 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1736 | return 0; |
1737 | ||
1738 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1739 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1740 | else |
bba74b36 | 1741 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1742 | |
1743 | putpkt (rs->buf); | |
1744 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1745 | ||
1746 | switch (packet_ok (rs->buf, | |
1554e9be | 1747 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1748 | { |
1749 | case PACKET_OK: | |
1750 | if (strcmp (rs->buf, "1") == 0) | |
1751 | return 1; | |
1752 | break; | |
1753 | case PACKET_ERROR: | |
1754 | warning (_("Remote failure reply: %s"), rs->buf); | |
1755 | break; | |
1756 | case PACKET_UNKNOWN: | |
1757 | break; | |
1758 | } | |
1759 | ||
1760 | return 0; | |
1761 | } | |
1762 | ||
49c62f2e PA |
1763 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1764 | has been invented by GDB, instead of reported by the target. Since | |
1765 | we can be connected to a remote system before before knowing about | |
1766 | any inferior, mark the target with execution when we find the first | |
1767 | inferior. If ATTACHED is 1, then we had just attached to this | |
1768 | inferior. If it is 0, then we just created this inferior. If it | |
1769 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1770 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1771 | attempt to open this inferior's executable as the main executable | |
1772 | if no main executable is open already. */ | |
1941c569 PA |
1773 | |
1774 | static struct inferior * | |
1b6e6f5c GB |
1775 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1776 | int try_open_exec) | |
1941c569 | 1777 | { |
1941c569 PA |
1778 | struct inferior *inf; |
1779 | ||
0b16c5cf PA |
1780 | /* Check whether this process we're learning about is to be |
1781 | considered attached, or if is to be considered to have been | |
1782 | spawned by the stub. */ | |
1783 | if (attached == -1) | |
1784 | attached = remote_query_attached (pid); | |
1785 | ||
f5656ead | 1786 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1787 | { |
1788 | /* If the target shares code across all inferiors, then every | |
1789 | attach adds a new inferior. */ | |
1790 | inf = add_inferior (pid); | |
1791 | ||
1792 | /* ... and every inferior is bound to the same program space. | |
1793 | However, each inferior may still have its own address | |
1794 | space. */ | |
1795 | inf->aspace = maybe_new_address_space (); | |
1796 | inf->pspace = current_program_space; | |
1797 | } | |
1798 | else | |
1799 | { | |
1800 | /* In the traditional debugging scenario, there's a 1-1 match | |
1801 | between program/address spaces. We simply bind the inferior | |
1802 | to the program space's address space. */ | |
1803 | inf = current_inferior (); | |
1804 | inferior_appeared (inf, pid); | |
1805 | } | |
1941c569 | 1806 | |
0b16c5cf | 1807 | inf->attach_flag = attached; |
49c62f2e | 1808 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1809 | |
1b6e6f5c GB |
1810 | /* If no main executable is currently open then attempt to |
1811 | open the file that was executed to create this inferior. */ | |
835205d0 | 1812 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 1813 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 1814 | |
1941c569 PA |
1815 | return inf; |
1816 | } | |
1817 | ||
7aabaf9d | 1818 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
85ad3aaf | 1819 | |
1941c569 PA |
1820 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
1821 | according to RUNNING. */ | |
1822 | ||
c906108c | 1823 | static void |
0d5b594f | 1824 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 1825 | { |
b7ea362b | 1826 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 1827 | struct thread_info *thread; |
b7ea362b PA |
1828 | |
1829 | /* GDB historically didn't pull threads in the initial connection | |
1830 | setup. If the remote target doesn't even have a concept of | |
1831 | threads (e.g., a bare-metal target), even if internally we | |
1832 | consider that a single-threaded target, mentioning a new thread | |
1833 | might be confusing to the user. Be silent then, preserving the | |
1834 | age old behavior. */ | |
1835 | if (rs->starting_up) | |
85ad3aaf | 1836 | thread = add_thread_silent (ptid); |
b7ea362b | 1837 | else |
85ad3aaf | 1838 | thread = add_thread (ptid); |
1941c569 | 1839 | |
7aabaf9d | 1840 | get_remote_thread_info (thread)->vcont_resumed = executing; |
0d5b594f | 1841 | set_executing (ptid, executing); |
1941c569 PA |
1842 | set_running (ptid, running); |
1843 | } | |
1844 | ||
1845 | /* Come here when we learn about a thread id from the remote target. | |
1846 | It may be the first time we hear about such thread, so take the | |
1847 | opportunity to add it to GDB's thread list. In case this is the | |
1848 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
1849 | GDB's inferior list as well. EXECUTING indicates whether the |
1850 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
1851 | |
1852 | static void | |
0d5b594f | 1853 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 1854 | { |
0d5b594f PA |
1855 | /* In non-stop mode, we assume new found threads are (externally) |
1856 | running until proven otherwise with a stop reply. In all-stop, | |
1857 | we can only get here if all threads are stopped. */ | |
1858 | int running = target_is_non_stop_p () ? 1 : 0; | |
1859 | ||
c906108c SS |
1860 | /* If this is a new thread, add it to GDB's thread list. |
1861 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1862 | |
1863 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1864 | { | |
1865 | /* We're seeing an event on a thread id we knew had exited. | |
1866 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 1867 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
1868 | return; |
1869 | } | |
1870 | ||
79d7f229 | 1871 | if (!in_thread_list (currthread)) |
c0a2216e | 1872 | { |
1941c569 | 1873 | struct inferior *inf = NULL; |
bad34192 | 1874 | int pid = ptid_get_pid (currthread); |
1941c569 | 1875 | |
bad34192 PA |
1876 | if (ptid_is_pid (inferior_ptid) |
1877 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1878 | { |
1879 | /* inferior_ptid has no thread member yet. This can happen | |
1880 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1881 | stub doesn't support qC. This is the first stop reported | |
1882 | after an attach, so this is the main thread. Update the | |
1883 | ptid in the thread list. */ | |
bad34192 PA |
1884 | if (in_thread_list (pid_to_ptid (pid))) |
1885 | thread_change_ptid (inferior_ptid, currthread); | |
1886 | else | |
1887 | { | |
0d5b594f | 1888 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
1889 | inferior_ptid = currthread; |
1890 | } | |
dc146f7c | 1891 | return; |
c0a2216e | 1892 | } |
82f73884 PA |
1893 | |
1894 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1895 | { |
1896 | /* inferior_ptid is not set yet. This can happen with the | |
1897 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1898 | doesn't support qC. This is the first stop reported | |
1899 | after an attach, so this is the main thread. Update the | |
1900 | ptid in the thread list. */ | |
dc146f7c | 1901 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1902 | return; |
c0a2216e | 1903 | } |
82f73884 | 1904 | |
29c87f7f PA |
1905 | /* When connecting to a target remote, or to a target |
1906 | extended-remote which already was debugging an inferior, we | |
1907 | may not know about it yet. Add it before adding its child | |
1908 | thread, so notifications are emitted in a sensible order. */ | |
1909 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1910 | { |
1911 | struct remote_state *rs = get_remote_state (); | |
1912 | int fake_pid_p = !remote_multi_process_p (rs); | |
1913 | ||
1914 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1915 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1916 | } |
29c87f7f | 1917 | |
82f73884 | 1918 | /* This is really a new thread. Add it. */ |
0d5b594f | 1919 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
1920 | |
1921 | /* If we found a new inferior, let the common code do whatever | |
1922 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1923 | breakpoints), unless we're just setting up an all-stop |
1924 | connection. */ | |
1941c569 | 1925 | if (inf != NULL) |
b7ea362b PA |
1926 | { |
1927 | struct remote_state *rs = get_remote_state (); | |
1928 | ||
6efcd9a8 | 1929 | if (!rs->starting_up) |
0d5b594f | 1930 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 1931 | } |
c0a2216e | 1932 | } |
c906108c SS |
1933 | } |
1934 | ||
85ad3aaf | 1935 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 1936 | |
7aabaf9d SM |
1937 | static remote_thread_info * |
1938 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 1939 | { |
85ad3aaf | 1940 | gdb_assert (thread != NULL); |
dc146f7c | 1941 | |
85ad3aaf | 1942 | if (thread->priv == NULL) |
7aabaf9d | 1943 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 1944 | |
7aabaf9d | 1945 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
1946 | } |
1947 | ||
1948 | /* Return PTID's private thread data, creating it if necessary. */ | |
1949 | ||
7aabaf9d SM |
1950 | static remote_thread_info * |
1951 | get_remote_thread_info (ptid_t ptid) | |
85ad3aaf PA |
1952 | { |
1953 | struct thread_info *info = find_thread_ptid (ptid); | |
1954 | ||
7aabaf9d | 1955 | return get_remote_thread_info (info); |
dc146f7c VP |
1956 | } |
1957 | ||
74531fed PA |
1958 | /* Call this function as a result of |
1959 | 1) A halt indication (T packet) containing a thread id | |
1960 | 2) A direct query of currthread | |
0df8b418 | 1961 | 3) Successful execution of set thread */ |
74531fed PA |
1962 | |
1963 | static void | |
47f8a51d | 1964 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1965 | { |
47f8a51d | 1966 | rs->general_thread = currthread; |
74531fed PA |
1967 | } |
1968 | ||
89be2091 DJ |
1969 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1970 | it can simply pass through to the inferior without reporting. */ | |
1971 | ||
1972 | static void | |
94bedb42 TT |
1973 | remote_pass_signals (struct target_ops *self, |
1974 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1975 | { |
4082afcc | 1976 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1977 | { |
1978 | char *pass_packet, *p; | |
89be2091 | 1979 | int count = 0, i; |
747dc59d | 1980 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1981 | |
1982 | gdb_assert (numsigs < 256); | |
1983 | for (i = 0; i < numsigs; i++) | |
1984 | { | |
2455069d | 1985 | if (pass_signals[i]) |
89be2091 DJ |
1986 | count++; |
1987 | } | |
224c3ddb | 1988 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
1989 | strcpy (pass_packet, "QPassSignals:"); |
1990 | p = pass_packet + strlen (pass_packet); | |
1991 | for (i = 0; i < numsigs; i++) | |
1992 | { | |
2455069d | 1993 | if (pass_signals[i]) |
89be2091 DJ |
1994 | { |
1995 | if (i >= 16) | |
1996 | *p++ = tohex (i >> 4); | |
1997 | *p++ = tohex (i & 15); | |
1998 | if (count) | |
1999 | *p++ = ';'; | |
2000 | else | |
2001 | break; | |
2002 | count--; | |
2003 | } | |
2004 | } | |
2005 | *p = 0; | |
747dc59d | 2006 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2007 | { |
89be2091 DJ |
2008 | putpkt (pass_packet); |
2009 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2010 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2011 | if (rs->last_pass_packet) |
2012 | xfree (rs->last_pass_packet); | |
2013 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2014 | } |
2015 | else | |
2016 | xfree (pass_packet); | |
2017 | } | |
2018 | } | |
2019 | ||
82075af2 JS |
2020 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2021 | to report syscalls to GDB. */ | |
2022 | ||
2023 | static int | |
2024 | remote_set_syscall_catchpoint (struct target_ops *self, | |
649a140c PA |
2025 | int pid, bool needed, int any_count, |
2026 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2027 | { |
b80406ac | 2028 | const char *catch_packet; |
82075af2 JS |
2029 | enum packet_result result; |
2030 | int n_sysno = 0; | |
2031 | ||
2032 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2033 | { | |
2034 | /* Not supported. */ | |
2035 | return 1; | |
2036 | } | |
2037 | ||
649a140c | 2038 | if (needed && any_count == 0) |
82075af2 | 2039 | { |
649a140c PA |
2040 | /* Count how many syscalls are to be caught. */ |
2041 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2042 | { |
649a140c | 2043 | if (syscall_counts[i] != 0) |
82075af2 JS |
2044 | n_sysno++; |
2045 | } | |
2046 | } | |
2047 | ||
2048 | if (remote_debug) | |
2049 | { | |
2050 | fprintf_unfiltered (gdb_stdlog, | |
2051 | "remote_set_syscall_catchpoint " | |
2052 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2053 | pid, needed, any_count, n_sysno); | |
2054 | } | |
2055 | ||
1b81856f | 2056 | std::string built_packet; |
82075af2 JS |
2057 | if (needed) |
2058 | { | |
2059 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2060 | characters for a sysno. If the resulting packet size is too | |
2061 | big, fallback on the non-selective packet. */ | |
2062 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2063 | built_packet.reserve (maxpktsz); |
2064 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2065 | if (any_count == 0) |
82075af2 | 2066 | { |
649a140c PA |
2067 | /* Add in each syscall to be caught. */ |
2068 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2069 | { |
649a140c PA |
2070 | if (syscall_counts[i] != 0) |
2071 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2072 | } |
2073 | } | |
1b81856f | 2074 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2075 | { |
2076 | /* catch_packet too big. Fallback to less efficient | |
2077 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2078 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2079 | } |
b80406ac | 2080 | else |
1b81856f | 2081 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2082 | } |
2083 | else | |
b80406ac | 2084 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2085 | |
b80406ac | 2086 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2087 | |
b80406ac TT |
2088 | putpkt (catch_packet); |
2089 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2090 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2091 | if (result == PACKET_OK) | |
2092 | return 0; | |
2093 | else | |
2094 | return -1; | |
82075af2 JS |
2095 | } |
2096 | ||
9b224c5e PA |
2097 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2098 | signals it should pass through to the inferior when detaching. */ | |
2099 | ||
2100 | static void | |
daf5e9b6 TT |
2101 | remote_program_signals (struct target_ops *self, |
2102 | int numsigs, unsigned char *signals) | |
9b224c5e | 2103 | { |
4082afcc | 2104 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2105 | { |
2106 | char *packet, *p; | |
2107 | int count = 0, i; | |
5e4a05c4 | 2108 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2109 | |
2110 | gdb_assert (numsigs < 256); | |
2111 | for (i = 0; i < numsigs; i++) | |
2112 | { | |
2113 | if (signals[i]) | |
2114 | count++; | |
2115 | } | |
224c3ddb | 2116 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2117 | strcpy (packet, "QProgramSignals:"); |
2118 | p = packet + strlen (packet); | |
2119 | for (i = 0; i < numsigs; i++) | |
2120 | { | |
2121 | if (signal_pass_state (i)) | |
2122 | { | |
2123 | if (i >= 16) | |
2124 | *p++ = tohex (i >> 4); | |
2125 | *p++ = tohex (i & 15); | |
2126 | if (count) | |
2127 | *p++ = ';'; | |
2128 | else | |
2129 | break; | |
2130 | count--; | |
2131 | } | |
2132 | } | |
2133 | *p = 0; | |
5e4a05c4 TT |
2134 | if (!rs->last_program_signals_packet |
2135 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2136 | { |
9b224c5e PA |
2137 | putpkt (packet); |
2138 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2139 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2140 | xfree (rs->last_program_signals_packet); |
2141 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2142 | } |
2143 | else | |
2144 | xfree (packet); | |
2145 | } | |
2146 | } | |
2147 | ||
79d7f229 PA |
2148 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2149 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2150 | thread. If GEN is set, set the general thread, if not, then set | |
2151 | the step/continue thread. */ | |
c906108c | 2152 | static void |
d62a8ae2 | 2153 | set_thread (ptid_t ptid, int gen) |
c906108c | 2154 | { |
d01949b6 | 2155 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2156 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2157 | char *buf = rs->buf; |
79d7f229 | 2158 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2159 | |
79d7f229 | 2160 | if (ptid_equal (state, ptid)) |
c906108c SS |
2161 | return; |
2162 | ||
79d7f229 PA |
2163 | *buf++ = 'H'; |
2164 | *buf++ = gen ? 'g' : 'c'; | |
2165 | if (ptid_equal (ptid, magic_null_ptid)) | |
2166 | xsnprintf (buf, endbuf - buf, "0"); | |
2167 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2168 | xsnprintf (buf, endbuf - buf, "0"); | |
2169 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2170 | xsnprintf (buf, endbuf - buf, "-1"); | |
2171 | else | |
82f73884 | 2172 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2173 | putpkt (rs->buf); |
6d820c5c | 2174 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2175 | if (gen) |
47f8a51d | 2176 | rs->general_thread = ptid; |
c906108c | 2177 | else |
47f8a51d | 2178 | rs->continue_thread = ptid; |
c906108c | 2179 | } |
79d7f229 PA |
2180 | |
2181 | static void | |
d62a8ae2 | 2182 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2183 | { |
2184 | set_thread (ptid, 1); | |
2185 | } | |
2186 | ||
2187 | static void | |
d62a8ae2 | 2188 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2189 | { |
2190 | set_thread (ptid, 0); | |
2191 | } | |
2192 | ||
3c9c4b83 PA |
2193 | /* Change the remote current process. Which thread within the process |
2194 | ends up selected isn't important, as long as it is the same process | |
2195 | as what INFERIOR_PTID points to. | |
2196 | ||
2197 | This comes from that fact that there is no explicit notion of | |
2198 | "selected process" in the protocol. The selected process for | |
2199 | general operations is the process the selected general thread | |
2200 | belongs to. */ | |
2201 | ||
2202 | static void | |
2203 | set_general_process (void) | |
2204 | { | |
2205 | struct remote_state *rs = get_remote_state (); | |
2206 | ||
2207 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2208 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2209 | return; |
2210 | ||
2211 | /* We only need to change the remote current thread if it's pointing | |
2212 | at some other process. */ | |
47f8a51d | 2213 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2214 | set_general_thread (inferior_ptid); |
2215 | } | |
2216 | ||
c906108c | 2217 | \f |
7d1a114c PA |
2218 | /* Return nonzero if this is the main thread that we made up ourselves |
2219 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2220 | |
2221 | static int | |
7d1a114c | 2222 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2223 | { |
c0a2216e PA |
2224 | if (ptid_equal (ptid, magic_null_ptid)) |
2225 | /* The main thread is always alive. */ | |
2226 | return 1; | |
2227 | ||
ba348170 | 2228 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2229 | /* The main thread is always alive. This can happen after a |
2230 | vAttach, if the remote side doesn't support | |
2231 | multi-threading. */ | |
2232 | return 1; | |
2233 | ||
7d1a114c PA |
2234 | return 0; |
2235 | } | |
2236 | ||
2237 | /* Return nonzero if the thread PTID is still alive on the remote | |
2238 | system. */ | |
2239 | ||
2240 | static int | |
2241 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2242 | { | |
2243 | struct remote_state *rs = get_remote_state (); | |
2244 | char *p, *endp; | |
2245 | ||
2246 | /* Check if this is a thread that we made up ourselves to model | |
2247 | non-threaded targets as single-threaded. */ | |
2248 | if (remote_thread_always_alive (ops, ptid)) | |
2249 | return 1; | |
2250 | ||
82f73884 PA |
2251 | p = rs->buf; |
2252 | endp = rs->buf + get_remote_packet_size (); | |
2253 | ||
2254 | *p++ = 'T'; | |
2255 | write_ptid (p, endp, ptid); | |
2256 | ||
2e9f7625 | 2257 | putpkt (rs->buf); |
6d820c5c | 2258 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2259 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2260 | } |
2261 | ||
79efa585 SM |
2262 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2263 | The thread_info object owns the memory for the name. */ | |
2264 | ||
2265 | static const char * | |
2266 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2267 | { | |
2268 | if (info->priv != NULL) | |
a9334058 SM |
2269 | { |
2270 | const std::string &name = get_remote_thread_info (info)->name; | |
2271 | return !name.empty () ? name.c_str () : NULL; | |
2272 | } | |
79efa585 SM |
2273 | |
2274 | return NULL; | |
2275 | } | |
2276 | ||
c906108c SS |
2277 | /* About these extended threadlist and threadinfo packets. They are |
2278 | variable length packets but, the fields within them are often fixed | |
2279 | length. They are redundent enough to send over UDP as is the | |
2280 | remote protocol in general. There is a matching unit test module | |
2281 | in libstub. */ | |
2282 | ||
23860348 | 2283 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2284 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2285 | changable. */ |
cce74817 JM |
2286 | |
2287 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2288 | Plan to fix this. */ |
cce74817 | 2289 | |
23860348 | 2290 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2291 | |
9d1f7ab2 | 2292 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2293 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2294 | |
2295 | struct gdb_ext_thread_info | |
c5aa993b | 2296 | { |
23860348 | 2297 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2298 | int active; /* Has state interesting to GDB? |
23860348 | 2299 | regs, stack. */ |
2bc416ba | 2300 | char display[256]; /* Brief state display, name, |
cedea757 | 2301 | blocked/suspended. */ |
23860348 | 2302 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2303 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2304 | whatever. */ |
c5aa993b | 2305 | }; |
cce74817 JM |
2306 | |
2307 | /* The volume of remote transfers can be limited by submitting | |
2308 | a mask containing bits specifying the desired information. | |
2309 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2310 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2311 | |
2312 | #define TAG_THREADID 1 | |
2313 | #define TAG_EXISTS 2 | |
2314 | #define TAG_DISPLAY 4 | |
2315 | #define TAG_THREADNAME 8 | |
c5aa993b | 2316 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2317 | |
23860348 | 2318 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2319 | |
a14ed312 | 2320 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2321 | |
a14ed312 | 2322 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2323 | |
a14ed312 | 2324 | static char *pack_int (char *buf, int value); |
cce74817 | 2325 | |
a14ed312 | 2326 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2327 | |
a14ed312 | 2328 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2329 | |
23860348 | 2330 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2331 | |
23860348 | 2332 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2333 | |
23860348 | 2334 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2335 | |
23860348 | 2336 | static int threadref_to_int (threadref *ref); |
cce74817 | 2337 | |
23860348 | 2338 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2339 | |
23860348 | 2340 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2341 | |
2bc416ba | 2342 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2343 | threadref *id); |
cce74817 | 2344 | |
a14ed312 | 2345 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2346 | threadref *expectedref, |
a14ed312 KB |
2347 | struct gdb_ext_thread_info |
2348 | *info); | |
cce74817 JM |
2349 | |
2350 | ||
2bc416ba | 2351 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2352 | int fieldset, /*TAG mask */ |
a14ed312 | 2353 | struct gdb_ext_thread_info *info); |
cce74817 | 2354 | |
a14ed312 KB |
2355 | static char *pack_threadlist_request (char *pkt, int startflag, |
2356 | int threadcount, | |
23860348 | 2357 | threadref *nextthread); |
cce74817 | 2358 | |
a14ed312 KB |
2359 | static int parse_threadlist_response (char *pkt, |
2360 | int result_limit, | |
23860348 | 2361 | threadref *original_echo, |
2bc416ba | 2362 | threadref *resultlist, |
23860348 | 2363 | int *doneflag); |
cce74817 | 2364 | |
a14ed312 | 2365 | static int remote_get_threadlist (int startflag, |
23860348 | 2366 | threadref *nextthread, |
a14ed312 KB |
2367 | int result_limit, |
2368 | int *done, | |
2bc416ba | 2369 | int *result_count, |
23860348 | 2370 | threadref *threadlist); |
cce74817 | 2371 | |
23860348 | 2372 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2373 | |
a14ed312 KB |
2374 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2375 | void *context, int looplimit); | |
cce74817 | 2376 | |
23860348 | 2377 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2378 | |
82f73884 PA |
2379 | |
2380 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2381 | buffer we're allowed to write to. Returns | |
2382 | BUF+CHARACTERS_WRITTEN. */ | |
2383 | ||
2384 | static char * | |
2385 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2386 | { | |
2387 | int pid, tid; | |
2388 | struct remote_state *rs = get_remote_state (); | |
2389 | ||
2390 | if (remote_multi_process_p (rs)) | |
2391 | { | |
2392 | pid = ptid_get_pid (ptid); | |
2393 | if (pid < 0) | |
2394 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2395 | else | |
2396 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2397 | } | |
ba348170 | 2398 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2399 | if (tid < 0) |
2400 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2401 | else | |
2402 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2403 | ||
2404 | return buf; | |
2405 | } | |
2406 | ||
256642e8 PA |
2407 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2408 | last parsed char. Returns null_ptid if no thread id is found, and | |
2409 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2410 | |
2411 | static ptid_t | |
256642e8 | 2412 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2413 | { |
256642e8 PA |
2414 | const char *p = buf; |
2415 | const char *pp; | |
82f73884 | 2416 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2417 | |
2418 | if (*p == 'p') | |
2419 | { | |
2420 | /* Multi-process ptid. */ | |
2421 | pp = unpack_varlen_hex (p + 1, &pid); | |
2422 | if (*pp != '.') | |
b37520b6 | 2423 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2424 | |
2425 | p = pp; | |
2426 | pp = unpack_varlen_hex (p + 1, &tid); | |
2427 | if (obuf) | |
2428 | *obuf = pp; | |
ba348170 | 2429 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2430 | } |
2431 | ||
2432 | /* No multi-process. Just a tid. */ | |
2433 | pp = unpack_varlen_hex (p, &tid); | |
2434 | ||
c9f35b34 KB |
2435 | /* Return null_ptid when no thread id is found. */ |
2436 | if (p == pp) | |
2437 | { | |
2438 | if (obuf) | |
2439 | *obuf = pp; | |
2440 | return null_ptid; | |
2441 | } | |
2442 | ||
82f73884 | 2443 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2444 | what's in inferior_ptid, unless it's null at this point. If so, |
2445 | then since there's no way to know the pid of the reported | |
2446 | threads, use the magic number. */ | |
2447 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2448 | pid = ptid_get_pid (magic_null_ptid); | |
2449 | else | |
2450 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2451 | |
2452 | if (obuf) | |
2453 | *obuf = pp; | |
ba348170 | 2454 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2455 | } |
2456 | ||
c906108c | 2457 | static int |
fba45db2 | 2458 | stubhex (int ch) |
c906108c SS |
2459 | { |
2460 | if (ch >= 'a' && ch <= 'f') | |
2461 | return ch - 'a' + 10; | |
2462 | if (ch >= '0' && ch <= '9') | |
2463 | return ch - '0'; | |
2464 | if (ch >= 'A' && ch <= 'F') | |
2465 | return ch - 'A' + 10; | |
2466 | return -1; | |
2467 | } | |
2468 | ||
2469 | static int | |
fba45db2 | 2470 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2471 | { |
2472 | int nibble; | |
2473 | int retval = 0; | |
2474 | ||
2475 | while (fieldlength) | |
2476 | { | |
2477 | nibble = stubhex (*buff++); | |
2478 | retval |= nibble; | |
2479 | fieldlength--; | |
2480 | if (fieldlength) | |
2481 | retval = retval << 4; | |
2482 | } | |
2483 | return retval; | |
2484 | } | |
2485 | ||
c906108c | 2486 | static char * |
fba45db2 | 2487 | unpack_nibble (char *buf, int *val) |
c906108c | 2488 | { |
b7589f7d | 2489 | *val = fromhex (*buf++); |
c906108c SS |
2490 | return buf; |
2491 | } | |
2492 | ||
c906108c | 2493 | static char * |
fba45db2 | 2494 | unpack_byte (char *buf, int *value) |
c906108c SS |
2495 | { |
2496 | *value = stub_unpack_int (buf, 2); | |
2497 | return buf + 2; | |
2498 | } | |
2499 | ||
2500 | static char * | |
fba45db2 | 2501 | pack_int (char *buf, int value) |
c906108c SS |
2502 | { |
2503 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2504 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2505 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2506 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2507 | return buf; | |
2508 | } | |
2509 | ||
2510 | static char * | |
fba45db2 | 2511 | unpack_int (char *buf, int *value) |
c906108c SS |
2512 | { |
2513 | *value = stub_unpack_int (buf, 8); | |
2514 | return buf + 8; | |
2515 | } | |
2516 | ||
23860348 | 2517 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2518 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2519 | |
2520 | static char * | |
fba45db2 | 2521 | pack_string (char *pkt, char *string) |
c906108c SS |
2522 | { |
2523 | char ch; | |
2524 | int len; | |
2525 | ||
2526 | len = strlen (string); | |
2527 | if (len > 200) | |
23860348 | 2528 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2529 | pkt = pack_hex_byte (pkt, len); |
2530 | while (len-- > 0) | |
2531 | { | |
2532 | ch = *string++; | |
2533 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2534 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2535 | *pkt++ = ch; |
2536 | } | |
2537 | return pkt; | |
2538 | } | |
2539 | #endif /* 0 (unused) */ | |
2540 | ||
2541 | static char * | |
fba45db2 | 2542 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2543 | { |
2544 | while (length--) | |
2545 | *dest++ = *src++; | |
2546 | *dest = '\0'; | |
2547 | return src; | |
2548 | } | |
2549 | ||
2550 | static char * | |
fba45db2 | 2551 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2552 | { |
2553 | char *limit; | |
2554 | unsigned char *altid; | |
2555 | ||
2556 | altid = (unsigned char *) id; | |
2557 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2558 | while (pkt < limit) | |
2559 | pkt = pack_hex_byte (pkt, *altid++); | |
2560 | return pkt; | |
2561 | } | |
2562 | ||
2563 | ||
2564 | static char * | |
fba45db2 | 2565 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2566 | { |
2567 | char *altref; | |
2568 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2569 | int x, y; | |
2570 | ||
2571 | altref = (char *) id; | |
2572 | ||
2573 | while (inbuf < limit) | |
2574 | { | |
2575 | x = stubhex (*inbuf++); | |
2576 | y = stubhex (*inbuf++); | |
2577 | *altref++ = (x << 4) | y; | |
2578 | } | |
2579 | return inbuf; | |
2580 | } | |
2581 | ||
2582 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2583 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2584 | to use 64bit thread references internally. This is an adapter |
2585 | function. */ | |
2586 | ||
2587 | void | |
fba45db2 | 2588 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2589 | { |
2590 | unsigned char *scan; | |
2591 | ||
2592 | scan = (unsigned char *) id; | |
2593 | { | |
2594 | int i = 4; | |
2595 | while (i--) | |
2596 | *scan++ = 0; | |
2597 | } | |
2598 | *scan++ = (value >> 24) & 0xff; | |
2599 | *scan++ = (value >> 16) & 0xff; | |
2600 | *scan++ = (value >> 8) & 0xff; | |
2601 | *scan++ = (value & 0xff); | |
2602 | } | |
2603 | ||
2604 | static int | |
fba45db2 | 2605 | threadref_to_int (threadref *ref) |
c906108c SS |
2606 | { |
2607 | int i, value = 0; | |
2608 | unsigned char *scan; | |
2609 | ||
cfd77fa1 | 2610 | scan = *ref; |
c906108c SS |
2611 | scan += 4; |
2612 | i = 4; | |
2613 | while (i-- > 0) | |
2614 | value = (value << 8) | ((*scan++) & 0xff); | |
2615 | return value; | |
2616 | } | |
2617 | ||
2618 | static void | |
fba45db2 | 2619 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2620 | { |
2621 | int i; | |
2622 | unsigned char *csrc, *cdest; | |
2623 | ||
2624 | csrc = (unsigned char *) src; | |
2625 | cdest = (unsigned char *) dest; | |
2626 | i = 8; | |
2627 | while (i--) | |
2628 | *cdest++ = *csrc++; | |
2629 | } | |
2630 | ||
2631 | static int | |
fba45db2 | 2632 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2633 | { |
23860348 | 2634 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2635 | #if 0 |
2636 | unsigned char *srcp, *destp; | |
2637 | int i, result; | |
2638 | srcp = (char *) src; | |
2639 | destp = (char *) dest; | |
2640 | ||
2641 | result = 1; | |
2642 | while (i-- > 0) | |
2643 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2644 | return result; | |
2645 | #endif | |
2646 | return 1; | |
2647 | } | |
2648 | ||
2649 | /* | |
c5aa993b JM |
2650 | threadid:1, # always request threadid |
2651 | context_exists:2, | |
2652 | display:4, | |
2653 | unique_name:8, | |
2654 | more_display:16 | |
2655 | */ | |
c906108c SS |
2656 | |
2657 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2658 | ||
2659 | static char * | |
fba45db2 | 2660 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2661 | { |
23860348 MS |
2662 | *pkt++ = 'q'; /* Info Query */ |
2663 | *pkt++ = 'P'; /* process or thread info */ | |
2664 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2665 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2666 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2667 | return pkt; |
2668 | } | |
2669 | ||
23860348 | 2670 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2671 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2672 | add more fields as time goes by. */ |
c906108c | 2673 | |
23860348 | 2674 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2675 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2676 | fetch registers and its stack? */ |
c5aa993b | 2677 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2678 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2679 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2680 | the process. */ |
c906108c SS |
2681 | |
2682 | static int | |
fba45db2 KB |
2683 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2684 | struct gdb_ext_thread_info *info) | |
c906108c | 2685 | { |
d01949b6 | 2686 | struct remote_state *rs = get_remote_state (); |
c906108c | 2687 | int mask, length; |
cfd77fa1 | 2688 | int tag; |
c906108c | 2689 | threadref ref; |
6d820c5c | 2690 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2691 | int retval = 1; |
2692 | ||
23860348 | 2693 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2694 | info->active = 0; |
2695 | info->display[0] = '\0'; | |
2696 | info->shortname[0] = '\0'; | |
2697 | info->more_display[0] = '\0'; | |
2698 | ||
23860348 MS |
2699 | /* Assume the characters indicating the packet type have been |
2700 | stripped. */ | |
c906108c SS |
2701 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2702 | pkt = unpack_threadid (pkt, &ref); | |
2703 | ||
2704 | if (mask == 0) | |
8a3fe4f8 | 2705 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2706 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2707 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2708 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2709 | return 0; |
2710 | } | |
2711 | copy_threadref (&info->threadid, &ref); | |
2712 | ||
23860348 | 2713 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2714 | |
23860348 MS |
2715 | /* Packets are terminated with nulls. */ |
2716 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2717 | { |
2718 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2719 | pkt = unpack_byte (pkt, &length); /* length */ |
2720 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2721 | { |
8a3fe4f8 | 2722 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2723 | retval = 0; |
2724 | break; | |
2725 | } | |
2726 | if (tag == TAG_THREADID) | |
2727 | { | |
2728 | if (length != 16) | |
2729 | { | |
8a3fe4f8 | 2730 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2731 | retval = 0; |
2732 | break; | |
2733 | } | |
2734 | pkt = unpack_threadid (pkt, &ref); | |
2735 | mask = mask & ~TAG_THREADID; | |
2736 | continue; | |
2737 | } | |
2738 | if (tag == TAG_EXISTS) | |
2739 | { | |
2740 | info->active = stub_unpack_int (pkt, length); | |
2741 | pkt += length; | |
2742 | mask = mask & ~(TAG_EXISTS); | |
2743 | if (length > 8) | |
2744 | { | |
8a3fe4f8 | 2745 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2746 | retval = 0; |
2747 | break; | |
2748 | } | |
2749 | continue; | |
2750 | } | |
2751 | if (tag == TAG_THREADNAME) | |
2752 | { | |
2753 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2754 | mask = mask & ~TAG_THREADNAME; | |
2755 | continue; | |
2756 | } | |
2757 | if (tag == TAG_DISPLAY) | |
2758 | { | |
2759 | pkt = unpack_string (pkt, &info->display[0], length); | |
2760 | mask = mask & ~TAG_DISPLAY; | |
2761 | continue; | |
2762 | } | |
2763 | if (tag == TAG_MOREDISPLAY) | |
2764 | { | |
2765 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2766 | mask = mask & ~TAG_MOREDISPLAY; | |
2767 | continue; | |
2768 | } | |
8a3fe4f8 | 2769 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2770 | break; /* Not a tag we know about. */ |
c906108c SS |
2771 | } |
2772 | return retval; | |
2773 | } | |
2774 | ||
2775 | static int | |
fba45db2 KB |
2776 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2777 | struct gdb_ext_thread_info *info) | |
c906108c | 2778 | { |
d01949b6 | 2779 | struct remote_state *rs = get_remote_state (); |
c906108c | 2780 | int result; |
c906108c | 2781 | |
2e9f7625 DJ |
2782 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2783 | putpkt (rs->buf); | |
6d820c5c | 2784 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2785 | |
2786 | if (rs->buf[0] == '\0') | |
2787 | return 0; | |
2788 | ||
2e9f7625 | 2789 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2790 | threadid, info); |
c906108c SS |
2791 | return result; |
2792 | } | |
2793 | ||
c906108c SS |
2794 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2795 | ||
2796 | static char * | |
fba45db2 KB |
2797 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2798 | threadref *nextthread) | |
c906108c SS |
2799 | { |
2800 | *pkt++ = 'q'; /* info query packet */ | |
2801 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2802 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2803 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2804 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2805 | *pkt = '\0'; | |
2806 | return pkt; | |
2807 | } | |
2808 | ||
2809 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2810 | ||
2811 | static int | |
fba45db2 KB |
2812 | parse_threadlist_response (char *pkt, int result_limit, |
2813 | threadref *original_echo, threadref *resultlist, | |
2814 | int *doneflag) | |
c906108c | 2815 | { |
d01949b6 | 2816 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2817 | char *limit; |
2818 | int count, resultcount, done; | |
2819 | ||
2820 | resultcount = 0; | |
2821 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2822 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2823 | /* done parse past here */ |
c906108c SS |
2824 | pkt = unpack_byte (pkt, &count); /* count field */ |
2825 | pkt = unpack_nibble (pkt, &done); | |
2826 | /* The first threadid is the argument threadid. */ | |
2827 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2828 | while ((count-- > 0) && (pkt < limit)) | |
2829 | { | |
2830 | pkt = unpack_threadid (pkt, resultlist++); | |
2831 | if (resultcount++ >= result_limit) | |
2832 | break; | |
2833 | } | |
2834 | if (doneflag) | |
2835 | *doneflag = done; | |
2836 | return resultcount; | |
2837 | } | |
2838 | ||
6dc54d91 PA |
2839 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2840 | qL packet is not supported, 0 on error and 1 on success. */ | |
2841 | ||
c906108c | 2842 | static int |
fba45db2 KB |
2843 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2844 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2845 | { |
d01949b6 | 2846 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2847 | int result = 1; |
2848 | ||
23860348 | 2849 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2850 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2851 | >= get_remote_packet_size ()) | |
ea9c271d | 2852 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2853 | |
6d820c5c DJ |
2854 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2855 | putpkt (rs->buf); | |
2856 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2857 | if (*rs->buf == '\0') |
6dc54d91 PA |
2858 | { |
2859 | /* Packet not supported. */ | |
2860 | return -1; | |
2861 | } | |
2862 | ||
2863 | *result_count = | |
2864 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2865 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2866 | |
0d031856 | 2867 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2868 | { |
23860348 MS |
2869 | /* FIXME: This is a good reason to drop the packet. */ |
2870 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2871 | /* Possabilities : |
2872 | retransmit immediatly - race conditions | |
2873 | retransmit after timeout - yes | |
2874 | exit | |
2875 | wait for packet, then exit | |
2876 | */ | |
8a3fe4f8 | 2877 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2878 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2879 | } |
2880 | if (*result_count <= 0) | |
2881 | { | |
2882 | if (*done != 1) | |
2883 | { | |
8a3fe4f8 | 2884 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2885 | result = 0; |
2886 | } | |
2887 | return result; /* break; */ | |
2888 | } | |
2889 | if (*result_count > result_limit) | |
2890 | { | |
2891 | *result_count = 0; | |
8a3fe4f8 | 2892 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2893 | return 0; |
2894 | } | |
2895 | return result; | |
2896 | } | |
2897 | ||
6dc54d91 PA |
2898 | /* Fetch the list of remote threads, with the qL packet, and call |
2899 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2900 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2901 | STEPFUNCTION returns false. If the packet is not supported, | |
2902 | returns -1. */ | |
c906108c | 2903 | |
c906108c | 2904 | static int |
fba45db2 KB |
2905 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2906 | int looplimit) | |
c906108c | 2907 | { |
0d031856 | 2908 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2909 | int done, i, result_count; |
2910 | int startflag = 1; | |
2911 | int result = 1; | |
2912 | int loopcount = 0; | |
c906108c SS |
2913 | |
2914 | done = 0; | |
2915 | while (!done) | |
2916 | { | |
2917 | if (loopcount++ > looplimit) | |
2918 | { | |
2919 | result = 0; | |
8a3fe4f8 | 2920 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2921 | break; |
2922 | } | |
6dc54d91 PA |
2923 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2924 | MAXTHREADLISTRESULTS, | |
2925 | &done, &result_count, | |
2926 | rs->resultthreadlist); | |
2927 | if (result <= 0) | |
2928 | break; | |
23860348 | 2929 | /* Clear for later iterations. */ |
c906108c SS |
2930 | startflag = 0; |
2931 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2932 | if (result_count >= 1) | |
0d031856 TT |
2933 | copy_threadref (&rs->nextthread, |
2934 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2935 | i = 0; |
2936 | while (result_count--) | |
6dc54d91 PA |
2937 | { |
2938 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2939 | { | |
2940 | result = 0; | |
2941 | break; | |
2942 | } | |
2943 | } | |
c906108c SS |
2944 | } |
2945 | return result; | |
2946 | } | |
2947 | ||
6dc54d91 PA |
2948 | /* A thread found on the remote target. */ |
2949 | ||
21fe1c75 | 2950 | struct thread_item |
6dc54d91 | 2951 | { |
21fe1c75 SM |
2952 | explicit thread_item (ptid_t ptid_) |
2953 | : ptid (ptid_) | |
2954 | {} | |
2955 | ||
2956 | thread_item (thread_item &&other) = default; | |
2957 | thread_item &operator= (thread_item &&other) = default; | |
2958 | ||
2959 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
2960 | ||
6dc54d91 PA |
2961 | /* The thread's PTID. */ |
2962 | ptid_t ptid; | |
2963 | ||
21fe1c75 SM |
2964 | /* The thread's extra info. */ |
2965 | std::string extra; | |
6dc54d91 | 2966 | |
21fe1c75 SM |
2967 | /* The thread's name. */ |
2968 | std::string name; | |
79efa585 | 2969 | |
6dc54d91 | 2970 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 2971 | int core = -1; |
f6327dcb KB |
2972 | |
2973 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 2974 | gdb::byte_vector thread_handle; |
21fe1c75 | 2975 | }; |
6dc54d91 PA |
2976 | |
2977 | /* Context passed around to the various methods listing remote | |
2978 | threads. As new threads are found, they're added to the ITEMS | |
2979 | vector. */ | |
2980 | ||
2981 | struct threads_listing_context | |
2982 | { | |
21fe1c75 SM |
2983 | /* Return true if this object contains an entry for a thread with ptid |
2984 | PTID. */ | |
6dc54d91 | 2985 | |
21fe1c75 SM |
2986 | bool contains_thread (ptid_t ptid) const |
2987 | { | |
2988 | auto match_ptid = [&] (const thread_item &item) | |
2989 | { | |
2990 | return item.ptid == ptid; | |
2991 | }; | |
80134cf5 | 2992 | |
21fe1c75 SM |
2993 | auto it = std::find_if (this->items.begin (), |
2994 | this->items.end (), | |
2995 | match_ptid); | |
80134cf5 | 2996 | |
21fe1c75 SM |
2997 | return it != this->items.end (); |
2998 | } | |
80134cf5 | 2999 | |
21fe1c75 | 3000 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3001 | |
21fe1c75 SM |
3002 | void remove_thread (ptid_t ptid) |
3003 | { | |
3004 | auto match_ptid = [&] (const thread_item &item) | |
3005 | { | |
3006 | return item.ptid == ptid; | |
3007 | }; | |
cbb8991c | 3008 | |
21fe1c75 SM |
3009 | auto it = std::remove_if (this->items.begin (), |
3010 | this->items.end (), | |
3011 | match_ptid); | |
cbb8991c | 3012 | |
21fe1c75 SM |
3013 | if (it != this->items.end ()) |
3014 | this->items.erase (it); | |
3015 | } | |
3016 | ||
3017 | /* The threads found on the remote target. */ | |
3018 | std::vector<thread_item> items; | |
3019 | }; | |
cbb8991c | 3020 | |
c906108c | 3021 | static int |
6dc54d91 | 3022 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3023 | { |
19ba03f4 SM |
3024 | struct threads_listing_context *context |
3025 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3026 | int pid = inferior_ptid.pid (); |
3027 | int lwp = threadref_to_int (ref); | |
3028 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3029 | |
21fe1c75 | 3030 | context->items.emplace_back (ptid); |
6dc54d91 | 3031 | |
c906108c SS |
3032 | return 1; /* continue iterator */ |
3033 | } | |
3034 | ||
3035 | #define CRAZY_MAX_THREADS 1000 | |
3036 | ||
39f77062 KB |
3037 | static ptid_t |
3038 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3039 | { |
d01949b6 | 3040 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3041 | |
3042 | putpkt ("qC"); | |
6d820c5c | 3043 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3044 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3045 | { |
256642e8 | 3046 | const char *obuf; |
c9f35b34 KB |
3047 | ptid_t result; |
3048 | ||
3049 | result = read_ptid (&rs->buf[2], &obuf); | |
3050 | if (*obuf != '\0' && remote_debug) | |
3051 | fprintf_unfiltered (gdb_stdlog, | |
3052 | "warning: garbage in qC reply\n"); | |
3053 | ||
3054 | return result; | |
3055 | } | |
c906108c SS |
3056 | else |
3057 | return oldpid; | |
3058 | } | |
3059 | ||
6dc54d91 | 3060 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3061 | |
6dc54d91 PA |
3062 | static int |
3063 | remote_get_threads_with_ql (struct target_ops *ops, | |
3064 | struct threads_listing_context *context) | |
c906108c | 3065 | { |
6dc54d91 PA |
3066 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3067 | CRAZY_MAX_THREADS) >= 0) | |
3068 | return 1; | |
3069 | ||
3070 | return 0; | |
c906108c SS |
3071 | } |
3072 | ||
dc146f7c VP |
3073 | #if defined(HAVE_LIBEXPAT) |
3074 | ||
dc146f7c VP |
3075 | static void |
3076 | start_thread (struct gdb_xml_parser *parser, | |
3077 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3078 | void *user_data, |
3079 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3080 | { |
19ba03f4 SM |
3081 | struct threads_listing_context *data |
3082 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3083 | struct gdb_xml_value *attr; |
dc146f7c | 3084 | |
4d0fdd9b | 3085 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3086 | ptid_t ptid = read_ptid (id, NULL); |
3087 | ||
3088 | data->items.emplace_back (ptid); | |
3089 | thread_item &item = data->items.back (); | |
dc146f7c | 3090 | |
3d2c1d41 PA |
3091 | attr = xml_find_attribute (attributes, "core"); |
3092 | if (attr != NULL) | |
4d0fdd9b | 3093 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3094 | |
79efa585 | 3095 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3096 | if (attr != NULL) |
4d0fdd9b | 3097 | item.name = (const char *) attr->value.get (); |
79efa585 | 3098 | |
f6327dcb KB |
3099 | attr = xml_find_attribute (attributes, "handle"); |
3100 | if (attr != NULL) | |
4d0fdd9b | 3101 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3102 | } |
3103 | ||
3104 | static void | |
3105 | end_thread (struct gdb_xml_parser *parser, | |
3106 | const struct gdb_xml_element *element, | |
3107 | void *user_data, const char *body_text) | |
3108 | { | |
19ba03f4 SM |
3109 | struct threads_listing_context *data |
3110 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3111 | |
21fe1c75 SM |
3112 | if (body_text != NULL && *body_text != '\0') |
3113 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3114 | } |
3115 | ||
3116 | const struct gdb_xml_attribute thread_attributes[] = { | |
3117 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3118 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3119 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3120 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3121 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3122 | }; | |
3123 | ||
3124 | const struct gdb_xml_element thread_children[] = { | |
3125 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3126 | }; | |
3127 | ||
3128 | const struct gdb_xml_element threads_children[] = { | |
3129 | { "thread", thread_attributes, thread_children, | |
3130 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3131 | start_thread, end_thread }, | |
3132 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3133 | }; | |
3134 | ||
3135 | const struct gdb_xml_element threads_elements[] = { | |
3136 | { "threads", NULL, threads_children, | |
3137 | GDB_XML_EF_NONE, NULL, NULL }, | |
3138 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3139 | }; | |
3140 | ||
3141 | #endif | |
3142 | ||
6dc54d91 | 3143 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3144 | |
6dc54d91 PA |
3145 | static int |
3146 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3147 | struct threads_listing_context *context) | |
0f71a2f6 | 3148 | { |
dc146f7c | 3149 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3150 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3151 | { |
9018be22 | 3152 | gdb::optional<gdb::char_vector> xml |
b7b030ad | 3153 | = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3154 | |
9018be22 | 3155 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3156 | { |
6dc54d91 | 3157 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3158 | threads_elements, xml->data (), context); |
dc146f7c VP |
3159 | } |
3160 | ||
6dc54d91 | 3161 | return 1; |
dc146f7c VP |
3162 | } |
3163 | #endif | |
3164 | ||
6dc54d91 PA |
3165 | return 0; |
3166 | } | |
3167 | ||
3168 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3169 | ||
3170 | static int | |
3171 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3172 | struct threads_listing_context *context) | |
3173 | { | |
3174 | struct remote_state *rs = get_remote_state (); | |
3175 | ||
b80fafe3 | 3176 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3177 | { |
256642e8 | 3178 | const char *bufp; |
6dc54d91 | 3179 | |
9d1f7ab2 | 3180 | putpkt ("qfThreadInfo"); |
6d820c5c | 3181 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3182 | bufp = rs->buf; |
9d1f7ab2 | 3183 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3184 | { |
9d1f7ab2 MS |
3185 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3186 | { | |
3187 | do | |
3188 | { | |
21fe1c75 SM |
3189 | ptid_t ptid = read_ptid (bufp, &bufp); |
3190 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3191 | } |
3192 | while (*bufp++ == ','); /* comma-separated list */ | |
3193 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3194 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3195 | bufp = rs->buf; |
9d1f7ab2 | 3196 | } |
6dc54d91 PA |
3197 | return 1; |
3198 | } | |
3199 | else | |
3200 | { | |
3201 | /* Packet not recognized. */ | |
3202 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3203 | } |
3204 | } | |
3205 | ||
6dc54d91 PA |
3206 | return 0; |
3207 | } | |
3208 | ||
e8032dde | 3209 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3210 | targets. */ |
3211 | ||
3212 | static void | |
e8032dde | 3213 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 | 3214 | { |
6dc54d91 | 3215 | struct threads_listing_context context; |
ab970af1 | 3216 | int got_list = 0; |
e8032dde | 3217 | |
6dc54d91 PA |
3218 | /* We have a few different mechanisms to fetch the thread list. Try |
3219 | them all, starting with the most preferred one first, falling | |
3220 | back to older methods. */ | |
3221 | if (remote_get_threads_with_qxfer (ops, &context) | |
3222 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3223 | || remote_get_threads_with_ql (ops, &context)) | |
3224 | { | |
ab970af1 PA |
3225 | struct thread_info *tp, *tmp; |
3226 | ||
3227 | got_list = 1; | |
3228 | ||
21fe1c75 | 3229 | if (context.items.empty () |
7d1a114c PA |
3230 | && remote_thread_always_alive (ops, inferior_ptid)) |
3231 | { | |
3232 | /* Some targets don't really support threads, but still | |
3233 | reply an (empty) thread list in response to the thread | |
3234 | listing packets, instead of replying "packet not | |
3235 | supported". Exit early so we don't delete the main | |
3236 | thread. */ | |
7d1a114c PA |
3237 | return; |
3238 | } | |
3239 | ||
ab970af1 PA |
3240 | /* CONTEXT now holds the current thread list on the remote |
3241 | target end. Delete GDB-side threads no longer found on the | |
3242 | target. */ | |
8a06aea7 | 3243 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3244 | { |
21fe1c75 | 3245 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3246 | { |
3247 | /* Not found. */ | |
3248 | delete_thread (tp->ptid); | |
3249 | } | |
cbb8991c DB |
3250 | } |
3251 | ||
3252 | /* Remove any unreported fork child threads from CONTEXT so | |
3253 | that we don't interfere with follow fork, which is where | |
3254 | creation of such threads is handled. */ | |
3255 | remove_new_fork_children (&context); | |
74531fed | 3256 | |
ab970af1 | 3257 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3258 | for (thread_item &item : context.items) |
6dc54d91 | 3259 | { |
21fe1c75 | 3260 | if (item.ptid != null_ptid) |
6dc54d91 | 3261 | { |
6dc54d91 | 3262 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3263 | executing until proven otherwise with a stop reply. |
3264 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3265 | stopped. */ |
0d5b594f | 3266 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3267 | |
21fe1c75 | 3268 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3269 | |
7aabaf9d | 3270 | remote_thread_info *info = get_remote_thread_info (item.ptid); |
21fe1c75 | 3271 | info->core = item.core; |
7aabaf9d SM |
3272 | info->extra = std::move (item.extra); |
3273 | info->name = std::move (item.name); | |
3274 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3275 | } |
3276 | } | |
3277 | } | |
3278 | ||
ab970af1 PA |
3279 | if (!got_list) |
3280 | { | |
3281 | /* If no thread listing method is supported, then query whether | |
3282 | each known thread is alive, one by one, with the T packet. | |
3283 | If the target doesn't support threads at all, then this is a | |
3284 | no-op. See remote_thread_alive. */ | |
3285 | prune_threads (); | |
3286 | } | |
9d1f7ab2 MS |
3287 | } |
3288 | ||
802188a7 | 3289 | /* |
9d1f7ab2 MS |
3290 | * Collect a descriptive string about the given thread. |
3291 | * The target may say anything it wants to about the thread | |
3292 | * (typically info about its blocked / runnable state, name, etc.). | |
3293 | * This string will appear in the info threads display. | |
802188a7 | 3294 | * |
9d1f7ab2 MS |
3295 | * Optional: targets are not required to implement this function. |
3296 | */ | |
3297 | ||
7a114964 | 3298 | static const char * |
c15906d8 | 3299 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3300 | { |
d01949b6 | 3301 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3302 | int result; |
3303 | int set; | |
3304 | threadref id; | |
3305 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3306 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3307 | int n = 0; /* position in display_buf */ |
3308 | ||
5d93a237 | 3309 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3310 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3311 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3312 | |
60e569b9 | 3313 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3314 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3315 | /* This is the main thread which was added by GDB. The remote |
3316 | server doesn't know about it. */ | |
3317 | return NULL; | |
3318 | ||
4082afcc | 3319 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3320 | { |
3321 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3322 | |
7aabaf9d | 3323 | if (info != NULL && info->priv != NULL) |
a9334058 SM |
3324 | { |
3325 | const std::string &extra = get_remote_thread_info (info)->extra; | |
3326 | return !extra.empty () ? extra.c_str () : NULL; | |
3327 | } | |
dc146f7c VP |
3328 | else |
3329 | return NULL; | |
3330 | } | |
3331 | ||
b80fafe3 | 3332 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3333 | { |
82f73884 PA |
3334 | char *b = rs->buf; |
3335 | char *endb = rs->buf + get_remote_packet_size (); | |
3336 | ||
3337 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3338 | b += strlen (b); | |
3339 | write_ptid (b, endb, tp->ptid); | |
3340 | ||
2e9f7625 | 3341 | putpkt (rs->buf); |
6d820c5c | 3342 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3343 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3344 | { |
325fac50 | 3345 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3346 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3347 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3348 | return display_buf; |
3349 | } | |
0f71a2f6 | 3350 | } |
9d1f7ab2 MS |
3351 | |
3352 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3353 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3354 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3355 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3356 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3357 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3358 | if (threadinfo.active) | |
0f71a2f6 | 3359 | { |
9d1f7ab2 | 3360 | if (*threadinfo.shortname) |
2bc416ba | 3361 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3362 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3363 | if (*threadinfo.display) |
2bc416ba | 3364 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3365 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3366 | if (*threadinfo.more_display) |
2bc416ba | 3367 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3368 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3369 | |
3370 | if (n > 0) | |
c5aa993b | 3371 | { |
23860348 | 3372 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3373 | if (',' == display_buf[n-1]) |
3374 | display_buf[n-1] = ' '; | |
3375 | return display_buf; | |
c5aa993b | 3376 | } |
0f71a2f6 | 3377 | } |
9d1f7ab2 | 3378 | return NULL; |
0f71a2f6 | 3379 | } |
c906108c | 3380 | \f |
c5aa993b | 3381 | |
5d9310c4 | 3382 | static bool |
61fc905d | 3383 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3384 | struct static_tracepoint_marker *marker) |
3385 | { | |
3386 | struct remote_state *rs = get_remote_state (); | |
3387 | char *p = rs->buf; | |
3388 | ||
bba74b36 | 3389 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3390 | p += strlen (p); |
3391 | p += hexnumstr (p, addr); | |
3392 | putpkt (rs->buf); | |
3393 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3394 | p = rs->buf; | |
3395 | ||
3396 | if (*p == 'E') | |
3397 | error (_("Remote failure reply: %s"), p); | |
3398 | ||
3399 | if (*p++ == 'm') | |
3400 | { | |
256642e8 | 3401 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3402 | return true; |
0fb4aa4b PA |
3403 | } |
3404 | ||
5d9310c4 | 3405 | return false; |
0fb4aa4b PA |
3406 | } |
3407 | ||
5d9310c4 | 3408 | static std::vector<static_tracepoint_marker> |
c686c57f TT |
3409 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3410 | const char *strid) | |
0fb4aa4b PA |
3411 | { |
3412 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3413 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3414 | const char *p; |
5d9310c4 | 3415 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3416 | |
3417 | /* Ask for a first packet of static tracepoint marker | |
3418 | definition. */ | |
3419 | putpkt ("qTfSTM"); | |
3420 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3421 | p = rs->buf; | |
3422 | if (*p == 'E') | |
3423 | error (_("Remote failure reply: %s"), p); | |
3424 | ||
0fb4aa4b PA |
3425 | while (*p++ == 'm') |
3426 | { | |
0fb4aa4b PA |
3427 | do |
3428 | { | |
5d9310c4 | 3429 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 3430 | |
5d9310c4 SM |
3431 | if (strid == NULL || marker.str_id == strid) |
3432 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
3433 | } |
3434 | while (*p++ == ','); /* comma-separated list */ | |
3435 | /* Ask for another packet of static tracepoint definition. */ | |
3436 | putpkt ("qTsSTM"); | |
3437 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3438 | p = rs->buf; | |
3439 | } | |
3440 | ||
0fb4aa4b PA |
3441 | return markers; |
3442 | } | |
3443 | ||
3444 | \f | |
10760264 JB |
3445 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3446 | ||
3447 | static ptid_t | |
1e6b91a4 | 3448 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3449 | { |
ba348170 | 3450 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3451 | } |
3452 | \f | |
3453 | ||
24b06219 | 3454 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3455 | |
3456 | static void | |
fba45db2 | 3457 | extended_remote_restart (void) |
c906108c | 3458 | { |
d01949b6 | 3459 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3460 | |
3461 | /* Send the restart command; for reasons I don't understand the | |
3462 | remote side really expects a number after the "R". */ | |
ea9c271d | 3463 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3464 | putpkt (rs->buf); |
c906108c | 3465 | |
ad9a8f3f | 3466 | remote_fileio_reset (); |
c906108c SS |
3467 | } |
3468 | \f | |
3469 | /* Clean up connection to a remote debugger. */ | |
3470 | ||
c906108c | 3471 | static void |
de90e03d | 3472 | remote_close (struct target_ops *self) |
c906108c | 3473 | { |
5d93a237 TT |
3474 | struct remote_state *rs = get_remote_state (); |
3475 | ||
3476 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3477 | return; /* already closed */ |
3478 | ||
048094ac | 3479 | /* Make sure we leave stdin registered in the event loop. */ |
e3594fd1 | 3480 | remote_terminal_ours (self); |
ce5ce7ed | 3481 | |
5d93a237 TT |
3482 | serial_close (rs->remote_desc); |
3483 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3484 | |
3485 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3486 | of all the inferiors and their threads we were controlling. |
3487 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3488 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3489 | inferior_ptid = null_ptid; |
f67fd822 | 3490 | discard_all_inferiors (); |
ce5ce7ed | 3491 | |
f48ff2a7 YQ |
3492 | /* We are closing the remote target, so we should discard |
3493 | everything of this target. */ | |
bcc75809 | 3494 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3495 | |
3496 | if (remote_async_inferior_event_token) | |
3497 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3498 | |
5965e028 | 3499 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3500 | |
3501 | trace_reset_local_state (); | |
c906108c SS |
3502 | } |
3503 | ||
23860348 | 3504 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3505 | |
3506 | static void | |
fba45db2 | 3507 | get_offsets (void) |
c906108c | 3508 | { |
d01949b6 | 3509 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3510 | char *buf; |
085dd6e6 | 3511 | char *ptr; |
31d99776 DJ |
3512 | int lose, num_segments = 0, do_sections, do_segments; |
3513 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3514 | struct section_offsets *offs; |
31d99776 DJ |
3515 | struct symfile_segment_data *data; |
3516 | ||
3517 | if (symfile_objfile == NULL) | |
3518 | return; | |
c906108c SS |
3519 | |
3520 | putpkt ("qOffsets"); | |
6d820c5c | 3521 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3522 | buf = rs->buf; |
c906108c SS |
3523 | |
3524 | if (buf[0] == '\000') | |
3525 | return; /* Return silently. Stub doesn't support | |
23860348 | 3526 | this command. */ |
c906108c SS |
3527 | if (buf[0] == 'E') |
3528 | { | |
8a3fe4f8 | 3529 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3530 | return; |
3531 | } | |
3532 | ||
3533 | /* Pick up each field in turn. This used to be done with scanf, but | |
3534 | scanf will make trouble if CORE_ADDR size doesn't match | |
3535 | conversion directives correctly. The following code will work | |
3536 | with any size of CORE_ADDR. */ | |
3537 | text_addr = data_addr = bss_addr = 0; | |
3538 | ptr = buf; | |
3539 | lose = 0; | |
3540 | ||
61012eef | 3541 | if (startswith (ptr, "Text=")) |
c906108c SS |
3542 | { |
3543 | ptr += 5; | |
3544 | /* Don't use strtol, could lose on big values. */ | |
3545 | while (*ptr && *ptr != ';') | |
3546 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3547 | |
61012eef | 3548 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3549 | { |
3550 | ptr += 6; | |
3551 | while (*ptr && *ptr != ';') | |
3552 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3553 | } | |
3554 | else | |
3555 | lose = 1; | |
3556 | ||
61012eef | 3557 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3558 | { |
3559 | ptr += 5; | |
3560 | while (*ptr && *ptr != ';') | |
3561 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3562 | |
31d99776 DJ |
3563 | if (bss_addr != data_addr) |
3564 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3565 | } | |
3566 | else | |
3567 | lose = 1; | |
3568 | } | |
61012eef | 3569 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3570 | { |
31d99776 DJ |
3571 | ptr += 8; |
3572 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3573 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3574 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3575 | num_segments = 1; | |
3576 | ||
61012eef | 3577 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3578 | { |
3579 | ptr += 9; | |
3580 | while (*ptr && *ptr != ';') | |
3581 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3582 | num_segments++; | |
3583 | } | |
c906108c SS |
3584 | } |
3585 | else | |
3586 | lose = 1; | |
3587 | ||
3588 | if (lose) | |
8a3fe4f8 | 3589 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3590 | else if (*ptr != '\0') |
3591 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3592 | |
802188a7 | 3593 | offs = ((struct section_offsets *) |
a39a16c4 | 3594 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3595 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3596 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3597 | |
31d99776 DJ |
3598 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3599 | do_segments = (data != NULL); | |
3600 | do_sections = num_segments == 0; | |
c906108c | 3601 | |
28c32713 | 3602 | if (num_segments > 0) |
31d99776 | 3603 | { |
31d99776 DJ |
3604 | segments[0] = text_addr; |
3605 | segments[1] = data_addr; | |
3606 | } | |
28c32713 JB |
3607 | /* If we have two segments, we can still try to relocate everything |
3608 | by assuming that the .text and .data offsets apply to the whole | |
3609 | text and data segments. Convert the offsets given in the packet | |
3610 | to base addresses for symfile_map_offsets_to_segments. */ | |
3611 | else if (data && data->num_segments == 2) | |
3612 | { | |
3613 | segments[0] = data->segment_bases[0] + text_addr; | |
3614 | segments[1] = data->segment_bases[1] + data_addr; | |
3615 | num_segments = 2; | |
3616 | } | |
8d385431 DJ |
3617 | /* If the object file has only one segment, assume that it is text |
3618 | rather than data; main programs with no writable data are rare, | |
3619 | but programs with no code are useless. Of course the code might | |
3620 | have ended up in the data segment... to detect that we would need | |
3621 | the permissions here. */ | |
3622 | else if (data && data->num_segments == 1) | |
3623 | { | |
3624 | segments[0] = data->segment_bases[0] + text_addr; | |
3625 | num_segments = 1; | |
3626 | } | |
28c32713 JB |
3627 | /* There's no way to relocate by segment. */ |
3628 | else | |
3629 | do_segments = 0; | |
31d99776 DJ |
3630 | |
3631 | if (do_segments) | |
3632 | { | |
3633 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3634 | offs, num_segments, segments); | |
3635 | ||
3636 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3637 | error (_("Can not handle qOffsets TextSeg " |
3638 | "response with this symbol file")); | |
31d99776 DJ |
3639 | |
3640 | if (ret > 0) | |
3641 | do_sections = 0; | |
3642 | } | |
c906108c | 3643 | |
9ef895d6 DJ |
3644 | if (data) |
3645 | free_symfile_segment_data (data); | |
31d99776 DJ |
3646 | |
3647 | if (do_sections) | |
3648 | { | |
3649 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3650 | ||
3e43a32a MS |
3651 | /* This is a temporary kludge to force data and bss to use the |
3652 | same offsets because that's what nlmconv does now. The real | |
3653 | solution requires changes to the stub and remote.c that I | |
3654 | don't have time to do right now. */ | |
31d99776 DJ |
3655 | |
3656 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3657 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3658 | } | |
c906108c SS |
3659 | |
3660 | objfile_relocate (symfile_objfile, offs); | |
3661 | } | |
3662 | ||
9a7071a8 JB |
3663 | /* Send interrupt_sequence to remote target. */ |
3664 | static void | |
eeae04df | 3665 | send_interrupt_sequence (void) |
9a7071a8 | 3666 | { |
5d93a237 TT |
3667 | struct remote_state *rs = get_remote_state (); |
3668 | ||
9a7071a8 | 3669 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3670 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3671 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3672 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3673 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3674 | { | |
5d93a237 | 3675 | serial_send_break (rs->remote_desc); |
c33e31fd | 3676 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3677 | } |
3678 | else | |
3679 | internal_error (__FILE__, __LINE__, | |
3680 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3681 | interrupt_sequence_mode); | |
3682 | } | |
3683 | ||
3405876a PA |
3684 | |
3685 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3686 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3687 | ||
3688 | static ptid_t | |
3689 | stop_reply_extract_thread (char *stop_reply) | |
3690 | { | |
3691 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3692 | { | |
256642e8 | 3693 | const char *p; |
3405876a PA |
3694 | |
3695 | /* Txx r:val ; r:val (...) */ | |
3696 | p = &stop_reply[3]; | |
3697 | ||
3698 | /* Look for "register" named "thread". */ | |
3699 | while (*p != '\0') | |
3700 | { | |
256642e8 | 3701 | const char *p1; |
3405876a PA |
3702 | |
3703 | p1 = strchr (p, ':'); | |
3704 | if (p1 == NULL) | |
3705 | return null_ptid; | |
3706 | ||
3707 | if (strncmp (p, "thread", p1 - p) == 0) | |
3708 | return read_ptid (++p1, &p); | |
3709 | ||
3710 | p1 = strchr (p, ';'); | |
3711 | if (p1 == NULL) | |
3712 | return null_ptid; | |
3713 | p1++; | |
3714 | ||
3715 | p = p1; | |
3716 | } | |
3717 | } | |
3718 | ||
3719 | return null_ptid; | |
3720 | } | |
3721 | ||
b7ea362b PA |
3722 | /* Determine the remote side's current thread. If we have a stop |
3723 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3724 | "thread" register we can extract the current thread from. If not, | |
3725 | ask the remote which is the current thread with qC. The former | |
3726 | method avoids a roundtrip. */ | |
3727 | ||
3728 | static ptid_t | |
3729 | get_current_thread (char *wait_status) | |
3730 | { | |
6a49a997 | 3731 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3732 | |
3733 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3734 | the target architecture, which we haven't yet fully determined at | |
3735 | this point. */ | |
3736 | if (wait_status != NULL) | |
3737 | ptid = stop_reply_extract_thread (wait_status); | |
3738 | if (ptid_equal (ptid, null_ptid)) | |
3739 | ptid = remote_current_thread (inferior_ptid); | |
3740 | ||
3741 | return ptid; | |
3742 | } | |
3743 | ||
49c62f2e PA |
3744 | /* Query the remote target for which is the current thread/process, |
3745 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3746 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3747 | to return the current thread. |
3748 | ||
3749 | This function is called after handling the '?' or 'vRun' packets, | |
3750 | whose response is a stop reply from which we can also try | |
3751 | extracting the thread. If the target doesn't support the explicit | |
3752 | qC query, we infer the current thread from that stop reply, passed | |
3753 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3754 | |
3755 | static void | |
3405876a | 3756 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3757 | { |
3758 | struct remote_state *rs = get_remote_state (); | |
3759 | int fake_pid_p = 0; | |
49c62f2e PA |
3760 | |
3761 | inferior_ptid = null_ptid; | |
3762 | ||
b7ea362b | 3763 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 3764 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 3765 | |
87215ad1 | 3766 | if (curr_ptid != null_ptid) |
49c62f2e PA |
3767 | { |
3768 | if (!remote_multi_process_p (rs)) | |
3769 | fake_pid_p = 1; | |
49c62f2e PA |
3770 | } |
3771 | else | |
3772 | { | |
3773 | /* Without this, some commands which require an active target | |
3774 | (such as kill) won't work. This variable serves (at least) | |
3775 | double duty as both the pid of the target process (if it has | |
3776 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 3777 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
3778 | fake_pid_p = 1; |
3779 | } | |
3780 | ||
87215ad1 | 3781 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 3782 | |
87215ad1 SDJ |
3783 | /* Add the main thread and switch to it. Don't try reading |
3784 | registers yet, since we haven't fetched the target description | |
3785 | yet. */ | |
3786 | thread_info *tp = add_thread_silent (curr_ptid); | |
3787 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
3788 | } |
3789 | ||
6efcd9a8 PA |
3790 | /* Print info about a thread that was found already stopped on |
3791 | connection. */ | |
3792 | ||
3793 | static void | |
3794 | print_one_stopped_thread (struct thread_info *thread) | |
3795 | { | |
3796 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3797 | ||
3798 | switch_to_thread (thread->ptid); | |
3799 | stop_pc = get_frame_pc (get_current_frame ()); | |
3800 | set_current_sal_from_frame (get_current_frame ()); | |
3801 | ||
3802 | thread->suspend.waitstatus_pending_p = 0; | |
3803 | ||
3804 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3805 | { | |
3806 | enum gdb_signal sig = ws->value.sig; | |
3807 | ||
3808 | if (signal_print_state (sig)) | |
76727919 | 3809 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 3810 | } |
76727919 | 3811 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
3812 | } |
3813 | ||
221e1a37 PA |
3814 | /* Process all initial stop replies the remote side sent in response |
3815 | to the ? packet. These indicate threads that were already stopped | |
3816 | on initial connection. We mark these threads as stopped and print | |
3817 | their current frame before giving the user the prompt. */ | |
3818 | ||
3819 | static void | |
6efcd9a8 | 3820 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3821 | { |
3822 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3823 | struct inferior *inf; |
3824 | struct thread_info *thread; | |
3825 | struct thread_info *selected = NULL; | |
3826 | struct thread_info *lowest_stopped = NULL; | |
3827 | struct thread_info *first = NULL; | |
221e1a37 PA |
3828 | |
3829 | /* Consume the initial pending events. */ | |
3830 | while (pending_stop_replies-- > 0) | |
3831 | { | |
3832 | ptid_t waiton_ptid = minus_one_ptid; | |
3833 | ptid_t event_ptid; | |
3834 | struct target_waitstatus ws; | |
3835 | int ignore_event = 0; | |
6efcd9a8 | 3836 | struct thread_info *thread; |
221e1a37 PA |
3837 | |
3838 | memset (&ws, 0, sizeof (ws)); | |
3839 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3840 | if (remote_debug) | |
3841 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3842 | ||
3843 | switch (ws.kind) | |
3844 | { | |
3845 | case TARGET_WAITKIND_IGNORE: | |
3846 | case TARGET_WAITKIND_NO_RESUMED: | |
3847 | case TARGET_WAITKIND_SIGNALLED: | |
3848 | case TARGET_WAITKIND_EXITED: | |
3849 | /* We shouldn't see these, but if we do, just ignore. */ | |
3850 | if (remote_debug) | |
3851 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3852 | ignore_event = 1; | |
3853 | break; | |
3854 | ||
3855 | case TARGET_WAITKIND_EXECD: | |
3856 | xfree (ws.value.execd_pathname); | |
3857 | break; | |
3858 | default: | |
3859 | break; | |
3860 | } | |
3861 | ||
3862 | if (ignore_event) | |
3863 | continue; | |
3864 | ||
6efcd9a8 | 3865 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3866 | |
3867 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3868 | { | |
3869 | enum gdb_signal sig = ws.value.sig; | |
3870 | ||
3871 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3872 | instead of signal 0. Suppress it. */ | |
3873 | if (sig == GDB_SIGNAL_TRAP) | |
3874 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3875 | thread->suspend.stop_signal = sig; |
3876 | ws.value.sig = sig; | |
3877 | } | |
221e1a37 | 3878 | |
6efcd9a8 PA |
3879 | thread->suspend.waitstatus = ws; |
3880 | ||
3881 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3882 | || ws.value.sig != GDB_SIGNAL_0) | |
3883 | thread->suspend.waitstatus_pending_p = 1; | |
3884 | ||
3885 | set_executing (event_ptid, 0); | |
3886 | set_running (event_ptid, 0); | |
7aabaf9d | 3887 | get_remote_thread_info (thread)->vcont_resumed = 0; |
6efcd9a8 PA |
3888 | } |
3889 | ||
3890 | /* "Notice" the new inferiors before anything related to | |
3891 | registers/memory. */ | |
3892 | ALL_INFERIORS (inf) | |
3893 | { | |
3894 | if (inf->pid == 0) | |
3895 | continue; | |
3896 | ||
3897 | inf->needs_setup = 1; | |
3898 | ||
3899 | if (non_stop) | |
3900 | { | |
3901 | thread = any_live_thread_of_process (inf->pid); | |
3902 | notice_new_inferior (thread->ptid, | |
3903 | thread->state == THREAD_RUNNING, | |
3904 | from_tty); | |
3905 | } | |
3906 | } | |
3907 | ||
3908 | /* If all-stop on top of non-stop, pause all threads. Note this | |
3909 | records the threads' stop pc, so must be done after "noticing" | |
3910 | the inferiors. */ | |
3911 | if (!non_stop) | |
3912 | { | |
3913 | stop_all_threads (); | |
3914 | ||
3915 | /* If all threads of an inferior were already stopped, we | |
3916 | haven't setup the inferior yet. */ | |
3917 | ALL_INFERIORS (inf) | |
3918 | { | |
3919 | if (inf->pid == 0) | |
3920 | continue; | |
221e1a37 | 3921 | |
6efcd9a8 PA |
3922 | if (inf->needs_setup) |
3923 | { | |
3924 | thread = any_live_thread_of_process (inf->pid); | |
3925 | switch_to_thread_no_regs (thread); | |
3926 | setup_inferior (0); | |
3927 | } | |
3928 | } | |
221e1a37 | 3929 | } |
6efcd9a8 PA |
3930 | |
3931 | /* Now go over all threads that are stopped, and print their current | |
3932 | frame. If all-stop, then if there's a signalled thread, pick | |
3933 | that as current. */ | |
3934 | ALL_NON_EXITED_THREADS (thread) | |
3935 | { | |
6efcd9a8 PA |
3936 | if (first == NULL) |
3937 | first = thread; | |
3938 | ||
3939 | if (!non_stop) | |
3940 | set_running (thread->ptid, 0); | |
3941 | else if (thread->state != THREAD_STOPPED) | |
3942 | continue; | |
3943 | ||
6efcd9a8 PA |
3944 | if (selected == NULL |
3945 | && thread->suspend.waitstatus_pending_p) | |
3946 | selected = thread; | |
3947 | ||
5d5658a1 PA |
3948 | if (lowest_stopped == NULL |
3949 | || thread->inf->num < lowest_stopped->inf->num | |
3950 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
3951 | lowest_stopped = thread; |
3952 | ||
3953 | if (non_stop) | |
3954 | print_one_stopped_thread (thread); | |
3955 | } | |
3956 | ||
3957 | /* In all-stop, we only print the status of one thread, and leave | |
3958 | others with their status pending. */ | |
3959 | if (!non_stop) | |
3960 | { | |
3961 | thread = selected; | |
3962 | if (thread == NULL) | |
3963 | thread = lowest_stopped; | |
3964 | if (thread == NULL) | |
3965 | thread = first; | |
3966 | ||
3967 | print_one_stopped_thread (thread); | |
3968 | } | |
3969 | ||
3970 | /* For "info program". */ | |
3971 | thread = inferior_thread (); | |
3972 | if (thread->state == THREAD_STOPPED) | |
3973 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
3974 | } |
3975 | ||
048094ac PA |
3976 | /* Start the remote connection and sync state. */ |
3977 | ||
9cbc821d | 3978 | static void |
04bd08de | 3979 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3980 | { |
c8d104ad PA |
3981 | struct remote_state *rs = get_remote_state (); |
3982 | struct packet_config *noack_config; | |
2d717e4f | 3983 | char *wait_status = NULL; |
8621d6a9 | 3984 | |
048094ac PA |
3985 | /* Signal other parts that we're going through the initial setup, |
3986 | and so things may not be stable yet. E.g., we don't try to | |
3987 | install tracepoints until we've relocated symbols. Also, a | |
3988 | Ctrl-C before we're connected and synced up can't interrupt the | |
3989 | target. Instead, it offers to drop the (potentially wedged) | |
3990 | connection. */ | |
3991 | rs->starting_up = 1; | |
3992 | ||
522002f9 | 3993 | QUIT; |
c906108c | 3994 | |
9a7071a8 JB |
3995 | if (interrupt_on_connect) |
3996 | send_interrupt_sequence (); | |
3997 | ||
57e12211 | 3998 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 3999 | remote_serial_write ("+", 1); |
1e51243a | 4000 | |
c8d104ad PA |
4001 | /* The first packet we send to the target is the optional "supported |
4002 | packets" request. If the target can answer this, it will tell us | |
4003 | which later probes to skip. */ | |
4004 | remote_query_supported (); | |
4005 | ||
d914c394 | 4006 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4007 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4008 | remote_set_permissions (target); |
d914c394 | 4009 | |
57809e5e JK |
4010 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4011 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4012 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4013 | invalid reply and GDB would return error in | |
4014 | remote_hostio_set_filesystem, making remote files access impossible. | |
4015 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4016 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4017 | { | |
4018 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4019 | ||
4020 | putpkt (v_mustreplyempty); | |
4021 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4022 | if (strcmp (rs->buf, "OK") == 0) | |
4023 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4024 | else if (strcmp (rs->buf, "") != 0) | |
4025 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4026 | rs->buf); | |
4027 | } | |
4028 | ||
c8d104ad PA |
4029 | /* Next, we possibly activate noack mode. |
4030 | ||
4031 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4032 | enable noack mode if the stub reported a wish for it with | |
4033 | qSupported. | |
4034 | ||
4035 | If set to TRUE, then enable noack mode even if the stub didn't | |
4036 | report it in qSupported. If the stub doesn't reply OK, the | |
4037 | session ends with an error. | |
4038 | ||
4039 | If FALSE, then don't activate noack mode, regardless of what the | |
4040 | stub claimed should be the default with qSupported. */ | |
4041 | ||
4042 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4043 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4044 | { |
4045 | putpkt ("QStartNoAckMode"); | |
4046 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4047 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4048 | rs->noack_mode = 1; | |
4049 | } | |
4050 | ||
04bd08de | 4051 | if (extended_p) |
5fe04517 PA |
4052 | { |
4053 | /* Tell the remote that we are using the extended protocol. */ | |
4054 | putpkt ("!"); | |
4055 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4056 | } | |
4057 | ||
9b224c5e PA |
4058 | /* Let the target know which signals it is allowed to pass down to |
4059 | the program. */ | |
4060 | update_signals_program_target (); | |
4061 | ||
d962ef82 DJ |
4062 | /* Next, if the target can specify a description, read it. We do |
4063 | this before anything involving memory or registers. */ | |
4064 | target_find_description (); | |
4065 | ||
6c95b8df PA |
4066 | /* Next, now that we know something about the target, update the |
4067 | address spaces in the program spaces. */ | |
4068 | update_address_spaces (); | |
4069 | ||
50c71eaf PA |
4070 | /* On OSs where the list of libraries is global to all |
4071 | processes, we fetch them early. */ | |
f5656ead | 4072 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4073 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4074 | |
6efcd9a8 | 4075 | if (target_is_non_stop_p ()) |
74531fed | 4076 | { |
4082afcc | 4077 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4078 | error (_("Non-stop mode requested, but remote " |
4079 | "does not support non-stop")); | |
74531fed PA |
4080 | |
4081 | putpkt ("QNonStop:1"); | |
4082 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4083 | ||
4084 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4085 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4086 | |
4087 | /* Find about threads and processes the stub is already | |
4088 | controlling. We default to adding them in the running state. | |
4089 | The '?' query below will then tell us about which threads are | |
4090 | stopped. */ | |
e8032dde | 4091 | remote_update_thread_list (target); |
74531fed | 4092 | } |
4082afcc | 4093 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4094 | { |
4095 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4096 | Request it explicitly. */ |
74531fed PA |
4097 | putpkt ("QNonStop:0"); |
4098 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4099 | ||
4100 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4101 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4102 | } |
4103 | ||
a0743c90 YQ |
4104 | /* Upload TSVs regardless of whether the target is running or not. The |
4105 | remote stub, such as GDBserver, may have some predefined or builtin | |
4106 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4107 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4108 | { |
4109 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4110 | ||
181e3713 | 4111 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4112 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4113 | } | |
4114 | ||
2d717e4f DJ |
4115 | /* Check whether the target is running now. */ |
4116 | putpkt ("?"); | |
4117 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4118 | ||
6efcd9a8 | 4119 | if (!target_is_non_stop_p ()) |
2d717e4f | 4120 | { |
74531fed | 4121 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4122 | { |
04bd08de | 4123 | if (!extended_p) |
74531fed | 4124 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4125 | |
4126 | /* We're connected, but not running. Drop out before we | |
4127 | call start_remote. */ | |
e278ad5b | 4128 | rs->starting_up = 0; |
c35b1492 | 4129 | return; |
2d717e4f DJ |
4130 | } |
4131 | else | |
74531fed | 4132 | { |
74531fed | 4133 | /* Save the reply for later. */ |
224c3ddb | 4134 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4135 | strcpy (wait_status, rs->buf); |
4136 | } | |
4137 | ||
b7ea362b | 4138 | /* Fetch thread list. */ |
e8032dde | 4139 | target_update_thread_list (); |
b7ea362b | 4140 | |
74531fed PA |
4141 | /* Let the stub know that we want it to return the thread. */ |
4142 | set_continue_thread (minus_one_ptid); | |
4143 | ||
b7ea362b PA |
4144 | if (thread_count () == 0) |
4145 | { | |
4146 | /* Target has no concept of threads at all. GDB treats | |
4147 | non-threaded target as single-threaded; add a main | |
4148 | thread. */ | |
4149 | add_current_inferior_and_thread (wait_status); | |
4150 | } | |
4151 | else | |
4152 | { | |
4153 | /* We have thread information; select the thread the target | |
4154 | says should be current. If we're reconnecting to a | |
4155 | multi-threaded program, this will ideally be the thread | |
4156 | that last reported an event before GDB disconnected. */ | |
4157 | inferior_ptid = get_current_thread (wait_status); | |
4158 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4159 | { | |
4160 | /* Odd... The target was able to list threads, but not | |
4161 | tell us which thread was current (no "thread" | |
4162 | register in T stop reply?). Just pick the first | |
4163 | thread in the thread list then. */ | |
c9f35b34 KB |
4164 | |
4165 | if (remote_debug) | |
4166 | fprintf_unfiltered (gdb_stdlog, | |
4167 | "warning: couldn't determine remote " | |
4168 | "current thread; picking first in list.\n"); | |
4169 | ||
b7ea362b PA |
4170 | inferior_ptid = thread_list->ptid; |
4171 | } | |
4172 | } | |
74531fed | 4173 | |
6e586cc5 YQ |
4174 | /* init_wait_for_inferior should be called before get_offsets in order |
4175 | to manage `inserted' flag in bp loc in a correct state. | |
4176 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4177 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4178 | start_remote, set `inserted' flag to 1. In the initialization of | |
4179 | inferior, breakpoint_init_inferior should be called first, and then | |
4180 | breakpoint_re_set can be called. If this order is broken, state of | |
4181 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4182 | manipulation. */ | |
4183 | init_wait_for_inferior (); | |
4184 | ||
74531fed PA |
4185 | get_offsets (); /* Get text, data & bss offsets. */ |
4186 | ||
d962ef82 DJ |
4187 | /* If we could not find a description using qXfer, and we know |
4188 | how to do it some other way, try again. This is not | |
4189 | supported for non-stop; it could be, but it is tricky if | |
4190 | there are no stopped threads when we connect. */ | |
04bd08de | 4191 | if (remote_read_description_p (target) |
f5656ead | 4192 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4193 | { |
4194 | target_clear_description (); | |
4195 | target_find_description (); | |
4196 | } | |
4197 | ||
74531fed PA |
4198 | /* Use the previously fetched status. */ |
4199 | gdb_assert (wait_status != NULL); | |
4200 | strcpy (rs->buf, wait_status); | |
4201 | rs->cached_wait_status = 1; | |
4202 | ||
04bd08de | 4203 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4204 | } |
4205 | else | |
4206 | { | |
68c97600 PA |
4207 | /* Clear WFI global state. Do this before finding about new |
4208 | threads and inferiors, and setting the current inferior. | |
4209 | Otherwise we would clear the proceed status of the current | |
4210 | inferior when we want its stop_soon state to be preserved | |
4211 | (see notice_new_inferior). */ | |
4212 | init_wait_for_inferior (); | |
4213 | ||
74531fed PA |
4214 | /* In non-stop, we will either get an "OK", meaning that there |
4215 | are no stopped threads at this time; or, a regular stop | |
4216 | reply. In the latter case, there may be more than one thread | |
4217 | stopped --- we pull them all out using the vStopped | |
4218 | mechanism. */ | |
4219 | if (strcmp (rs->buf, "OK") != 0) | |
4220 | { | |
722247f1 | 4221 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4222 | |
722247f1 YQ |
4223 | /* remote_notif_get_pending_replies acks this one, and gets |
4224 | the rest out. */ | |
f48ff2a7 | 4225 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4226 | = remote_notif_parse (notif, rs->buf); |
4227 | remote_notif_get_pending_events (notif); | |
74531fed | 4228 | } |
2d717e4f | 4229 | |
74531fed PA |
4230 | if (thread_count () == 0) |
4231 | { | |
04bd08de | 4232 | if (!extended_p) |
74531fed | 4233 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4234 | |
c35b1492 PA |
4235 | /* We're connected, but not running. Drop out before we |
4236 | call start_remote. */ | |
e278ad5b | 4237 | rs->starting_up = 0; |
c35b1492 PA |
4238 | return; |
4239 | } | |
74531fed | 4240 | |
74531fed PA |
4241 | /* In non-stop mode, any cached wait status will be stored in |
4242 | the stop reply queue. */ | |
4243 | gdb_assert (wait_status == NULL); | |
f0223081 | 4244 | |
2455069d | 4245 | /* Report all signals during attach/startup. */ |
94bedb42 | 4246 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4247 | |
4248 | /* If there are already stopped threads, mark them stopped and | |
4249 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4250 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4251 | |
4252 | if (target_can_async_p ()) | |
4253 | target_async (1); | |
74531fed | 4254 | } |
c8d104ad | 4255 | |
c8d104ad PA |
4256 | /* If we connected to a live target, do some additional setup. */ |
4257 | if (target_has_execution) | |
4258 | { | |
f4ccffad | 4259 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4260 | remote_check_symbols (); |
c8d104ad | 4261 | } |
50c71eaf | 4262 | |
d5551862 SS |
4263 | /* Possibly the target has been engaged in a trace run started |
4264 | previously; find out where things are at. */ | |
8bd200f1 | 4265 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4266 | { |
00bf0b85 | 4267 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4268 | |
00bf0b85 SS |
4269 | if (current_trace_status ()->running) |
4270 | printf_filtered (_("Trace is already running on the target.\n")); | |
4271 | ||
ab6617cc | 4272 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4273 | |
4274 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4275 | } |
4276 | ||
c0272db5 TW |
4277 | /* Possibly the target has been engaged in a btrace record started |
4278 | previously; find out where things are at. */ | |
4279 | remote_btrace_maybe_reopen (); | |
4280 | ||
1e51243a PA |
4281 | /* The thread and inferior lists are now synchronized with the |
4282 | target, our symbols have been relocated, and we're merged the | |
4283 | target's tracepoints with ours. We're done with basic start | |
4284 | up. */ | |
4285 | rs->starting_up = 0; | |
4286 | ||
a25a5a45 PA |
4287 | /* Maybe breakpoints are global and need to be inserted now. */ |
4288 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4289 | insert_breakpoints (); |
c906108c SS |
4290 | } |
4291 | ||
4292 | /* Open a connection to a remote debugger. | |
4293 | NAME is the filename used for communication. */ | |
4294 | ||
4295 | static void | |
014f9477 | 4296 | remote_open (const char *name, int from_tty) |
c906108c | 4297 | { |
75c99385 | 4298 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4299 | } |
4300 | ||
c906108c SS |
4301 | /* Open a connection to a remote debugger using the extended |
4302 | remote gdb protocol. NAME is the filename used for communication. */ | |
4303 | ||
4304 | static void | |
014f9477 | 4305 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4306 | { |
75c99385 | 4307 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4308 | } |
4309 | ||
ca4f7f8b PA |
4310 | /* Reset all packets back to "unknown support". Called when opening a |
4311 | new connection to a remote target. */ | |
c906108c | 4312 | |
d471ea57 | 4313 | static void |
ca4f7f8b | 4314 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4315 | { |
4316 | int i; | |
a744cf53 | 4317 | |
444abaca | 4318 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4319 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4320 | } |
4321 | ||
ca4f7f8b PA |
4322 | /* Initialize all packet configs. */ |
4323 | ||
4324 | static void | |
4325 | init_all_packet_configs (void) | |
4326 | { | |
4327 | int i; | |
4328 | ||
4329 | for (i = 0; i < PACKET_MAX; i++) | |
4330 | { | |
4331 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4332 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4333 | } | |
4334 | } | |
4335 | ||
23860348 | 4336 | /* Symbol look-up. */ |
dc8acb97 MS |
4337 | |
4338 | static void | |
36d25514 | 4339 | remote_check_symbols (void) |
dc8acb97 MS |
4340 | { |
4341 | char *msg, *reply, *tmp; | |
dc8acb97 | 4342 | int end; |
28170b88 | 4343 | long reply_size; |
a5c0808e | 4344 | struct cleanup *old_chain; |
dc8acb97 | 4345 | |
63154eca PA |
4346 | /* The remote side has no concept of inferiors that aren't running |
4347 | yet, it only knows about running processes. If we're connected | |
4348 | but our current inferior is not running, we should not invite the | |
4349 | remote target to request symbol lookups related to its | |
4350 | (unrelated) current process. */ | |
4351 | if (!target_has_execution) | |
4352 | return; | |
4353 | ||
4082afcc | 4354 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4355 | return; |
4356 | ||
63154eca PA |
4357 | /* Make sure the remote is pointing at the right process. Note |
4358 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4359 | set_general_process (); |
4360 | ||
6d820c5c DJ |
4361 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4362 | because we need both at the same time. */ | |
224c3ddb | 4363 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4364 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4365 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4366 | make_cleanup (free_current_contents, &reply); | |
4367 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4368 | |
23860348 | 4369 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4370 | |
4371 | putpkt ("qSymbol::"); | |
28170b88 MK |
4372 | getpkt (&reply, &reply_size, 0); |
4373 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4374 | |
61012eef | 4375 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4376 | { |
77e371c0 TT |
4377 | struct bound_minimal_symbol sym; |
4378 | ||
dc8acb97 | 4379 | tmp = &reply[8]; |
cfd77fa1 | 4380 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4381 | msg[end] = '\0'; |
4382 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4383 | if (sym.minsym == NULL) |
ea9c271d | 4384 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4385 | else |
2bbe3cc1 | 4386 | { |
f5656ead | 4387 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4388 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4389 | |
4390 | /* If this is a function address, return the start of code | |
4391 | instead of any data function descriptor. */ | |
f5656ead | 4392 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4393 | sym_addr, |
4394 | ¤t_target); | |
4395 | ||
4396 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4397 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4398 | } |
4399 | ||
dc8acb97 | 4400 | putpkt (msg); |
28170b88 | 4401 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4402 | } |
a5c0808e PA |
4403 | |
4404 | do_cleanups (old_chain); | |
dc8acb97 MS |
4405 | } |
4406 | ||
9db8d71f | 4407 | static struct serial * |
baa336ce | 4408 | remote_serial_open (const char *name) |
9db8d71f DJ |
4409 | { |
4410 | static int udp_warning = 0; | |
4411 | ||
4412 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4413 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4414 | serial connection is reliable and not the serial connection promising | |
4415 | to be. */ | |
61012eef | 4416 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4417 | { |
3e43a32a MS |
4418 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4419 | "Some events may be lost, rendering further debugging " | |
4420 | "impossible.")); | |
9db8d71f DJ |
4421 | udp_warning = 1; |
4422 | } | |
4423 | ||
4424 | return serial_open (name); | |
4425 | } | |
4426 | ||
d914c394 SS |
4427 | /* Inform the target of our permission settings. The permission flags |
4428 | work without this, but if the target knows the settings, it can do | |
4429 | a couple things. First, it can add its own check, to catch cases | |
4430 | that somehow manage to get by the permissions checks in target | |
4431 | methods. Second, if the target is wired to disallow particular | |
4432 | settings (for instance, a system in the field that is not set up to | |
4433 | be able to stop at a breakpoint), it can object to any unavailable | |
4434 | permissions. */ | |
4435 | ||
4436 | void | |
c378d69d | 4437 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4438 | { |
4439 | struct remote_state *rs = get_remote_state (); | |
4440 | ||
bba74b36 YQ |
4441 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4442 | "WriteReg:%x;WriteMem:%x;" | |
4443 | "InsertBreak:%x;InsertTrace:%x;" | |
4444 | "InsertFastTrace:%x;Stop:%x", | |
4445 | may_write_registers, may_write_memory, | |
4446 | may_insert_breakpoints, may_insert_tracepoints, | |
4447 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4448 | putpkt (rs->buf); |
4449 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4450 | ||
4451 | /* If the target didn't like the packet, warn the user. Do not try | |
4452 | to undo the user's settings, that would just be maddening. */ | |
4453 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4454 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4455 | } |
4456 | ||
be2a5f71 DJ |
4457 | /* This type describes each known response to the qSupported |
4458 | packet. */ | |
4459 | struct protocol_feature | |
4460 | { | |
4461 | /* The name of this protocol feature. */ | |
4462 | const char *name; | |
4463 | ||
4464 | /* The default for this protocol feature. */ | |
4465 | enum packet_support default_support; | |
4466 | ||
4467 | /* The function to call when this feature is reported, or after | |
4468 | qSupported processing if the feature is not supported. | |
4469 | The first argument points to this structure. The second | |
4470 | argument indicates whether the packet requested support be | |
4471 | enabled, disabled, or probed (or the default, if this function | |
4472 | is being called at the end of processing and this feature was | |
4473 | not reported). The third argument may be NULL; if not NULL, it | |
4474 | is a NUL-terminated string taken from the packet following | |
4475 | this feature's name and an equals sign. */ | |
4476 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4477 | const char *); | |
4478 | ||
4479 | /* The corresponding packet for this feature. Only used if | |
4480 | FUNC is remote_supported_packet. */ | |
4481 | int packet; | |
4482 | }; | |
4483 | ||
be2a5f71 DJ |
4484 | static void |
4485 | remote_supported_packet (const struct protocol_feature *feature, | |
4486 | enum packet_support support, | |
4487 | const char *argument) | |
4488 | { | |
4489 | if (argument) | |
4490 | { | |
4491 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4492 | " \"%s\"."), feature->name); | |
4493 | return; | |
4494 | } | |
4495 | ||
4082afcc | 4496 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4497 | } |
be2a5f71 DJ |
4498 | |
4499 | static void | |
4500 | remote_packet_size (const struct protocol_feature *feature, | |
4501 | enum packet_support support, const char *value) | |
4502 | { | |
4503 | struct remote_state *rs = get_remote_state (); | |
4504 | ||
4505 | int packet_size; | |
4506 | char *value_end; | |
4507 | ||
4508 | if (support != PACKET_ENABLE) | |
4509 | return; | |
4510 | ||
4511 | if (value == NULL || *value == '\0') | |
4512 | { | |
4513 | warning (_("Remote target reported \"%s\" without a size."), | |
4514 | feature->name); | |
4515 | return; | |
4516 | } | |
4517 | ||
4518 | errno = 0; | |
4519 | packet_size = strtol (value, &value_end, 16); | |
4520 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4521 | { | |
4522 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4523 | feature->name, value); | |
4524 | return; | |
4525 | } | |
4526 | ||
be2a5f71 DJ |
4527 | /* Record the new maximum packet size. */ |
4528 | rs->explicit_packet_size = packet_size; | |
4529 | } | |
4530 | ||
dc473cfb | 4531 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4532 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4533 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4534 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4535 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4536 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4537 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4538 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4539 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4540 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4541 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4542 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4543 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4544 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4545 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4546 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4547 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4548 | PACKET_qXfer_spu_read }, | |
4549 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4550 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4551 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4552 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4553 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4554 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4555 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4556 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4557 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4558 | PACKET_QPassSignals }, | |
82075af2 JS |
4559 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4560 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4561 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4562 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
4563 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
4564 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
4565 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4566 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
4567 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
4568 | PACKET_QEnvironmentHexEncoded }, | |
4569 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
4570 | PACKET_QEnvironmentReset }, | |
4571 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
4572 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
4573 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4574 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4575 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4576 | PACKET_multiprocess_feature }, | |
4577 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4578 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4579 | PACKET_qXfer_siginfo_read }, | |
4580 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4581 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4582 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4583 | PACKET_ConditionalTracepoints }, |
4082afcc | 4584 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4585 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4586 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4587 | PACKET_BreakpointCommands }, |
4082afcc | 4588 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4589 | PACKET_FastTracepoints }, |
4082afcc | 4590 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4591 | PACKET_StaticTracepoints }, |
4082afcc | 4592 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4593 | PACKET_InstallInTrace}, |
4082afcc PA |
4594 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4595 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4596 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4597 | PACKET_bc }, | |
4598 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4599 | PACKET_bs }, | |
409873ef SS |
4600 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4601 | PACKET_TracepointSource }, | |
d914c394 SS |
4602 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4603 | PACKET_QAllow }, | |
4082afcc PA |
4604 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4605 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4606 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4607 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4608 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4609 | PACKET_qXfer_uib }, | |
03583c20 UW |
4610 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4611 | PACKET_QDisableRandomization }, | |
d1feda86 | 4612 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4613 | { "QTBuffer:size", PACKET_DISABLE, |
4614 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4615 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4616 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4617 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4618 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4619 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4620 | PACKET_qXfer_btrace }, |
4621 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4622 | PACKET_qXfer_btrace_conf }, |
4623 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4624 | PACKET_Qbtrace_conf_bts_size }, |
4625 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4626 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4627 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4628 | PACKET_fork_event_feature }, | |
4629 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4630 | PACKET_vfork_event_feature }, | |
94585166 DB |
4631 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4632 | PACKET_exec_event_feature }, | |
b20a6524 | 4633 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4634 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4635 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4636 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4637 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4638 | }; |
4639 | ||
c8d5aac9 L |
4640 | static char *remote_support_xml; |
4641 | ||
4642 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4643 | ||
4644 | void | |
6e39997a | 4645 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4646 | { |
4647 | #if defined(HAVE_LIBEXPAT) | |
4648 | if (remote_support_xml == NULL) | |
c4f7c687 | 4649 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4650 | else |
4651 | { | |
4652 | char *copy = xstrdup (remote_support_xml + 13); | |
4653 | char *p = strtok (copy, ","); | |
4654 | ||
4655 | do | |
4656 | { | |
4657 | if (strcmp (p, xml) == 0) | |
4658 | { | |
4659 | /* already there */ | |
4660 | xfree (copy); | |
4661 | return; | |
4662 | } | |
4663 | } | |
4664 | while ((p = strtok (NULL, ",")) != NULL); | |
4665 | xfree (copy); | |
4666 | ||
94b0dee1 PA |
4667 | remote_support_xml = reconcat (remote_support_xml, |
4668 | remote_support_xml, ",", xml, | |
4669 | (char *) NULL); | |
c8d5aac9 L |
4670 | } |
4671 | #endif | |
4672 | } | |
4673 | ||
4674 | static char * | |
4675 | remote_query_supported_append (char *msg, const char *append) | |
4676 | { | |
4677 | if (msg) | |
94b0dee1 | 4678 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4679 | else |
4680 | return xstrdup (append); | |
4681 | } | |
4682 | ||
be2a5f71 DJ |
4683 | static void |
4684 | remote_query_supported (void) | |
4685 | { | |
4686 | struct remote_state *rs = get_remote_state (); | |
4687 | char *next; | |
4688 | int i; | |
4689 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4690 | ||
4691 | /* The packet support flags are handled differently for this packet | |
4692 | than for most others. We treat an error, a disabled packet, and | |
4693 | an empty response identically: any features which must be reported | |
4694 | to be used will be automatically disabled. An empty buffer | |
4695 | accomplishes this, since that is also the representation for a list | |
4696 | containing no features. */ | |
4697 | ||
4698 | rs->buf[0] = 0; | |
4082afcc | 4699 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4700 | { |
c8d5aac9 | 4701 | char *q = NULL; |
94b0dee1 | 4702 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4703 | |
73b8c1fd PA |
4704 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4705 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4706 | |
f7e6eed5 PA |
4707 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4708 | q = remote_query_supported_append (q, "swbreak+"); | |
4709 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4710 | q = remote_query_supported_append (q, "hwbreak+"); | |
4711 | ||
dde08ee1 PA |
4712 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4713 | ||
8020350c DB |
4714 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4715 | != AUTO_BOOLEAN_FALSE) | |
4716 | q = remote_query_supported_append (q, "fork-events+"); | |
4717 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4718 | != AUTO_BOOLEAN_FALSE) | |
4719 | q = remote_query_supported_append (q, "vfork-events+"); | |
4720 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4721 | != AUTO_BOOLEAN_FALSE) | |
4722 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4723 | |
750ce8d1 YQ |
4724 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4725 | q = remote_query_supported_append (q, "vContSupported+"); | |
4726 | ||
65706a29 PA |
4727 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4728 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4729 | ||
f2faf941 PA |
4730 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4731 | q = remote_query_supported_append (q, "no-resumed+"); | |
4732 | ||
b35d5edb PA |
4733 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4734 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
4735 | if (remote_support_xml != NULL |
4736 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
b35d5edb PA |
4737 | q = remote_query_supported_append (q, remote_support_xml); |
4738 | ||
dde08ee1 PA |
4739 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4740 | putpkt (q); | |
82f73884 | 4741 | |
94b0dee1 PA |
4742 | do_cleanups (old_chain); |
4743 | ||
be2a5f71 DJ |
4744 | getpkt (&rs->buf, &rs->buf_size, 0); |
4745 | ||
4746 | /* If an error occured, warn, but do not return - just reset the | |
4747 | buffer to empty and go on to disable features. */ | |
4748 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4749 | == PACKET_ERROR) | |
4750 | { | |
4751 | warning (_("Remote failure reply: %s"), rs->buf); | |
4752 | rs->buf[0] = 0; | |
4753 | } | |
4754 | } | |
4755 | ||
4756 | memset (seen, 0, sizeof (seen)); | |
4757 | ||
4758 | next = rs->buf; | |
4759 | while (*next) | |
4760 | { | |
4761 | enum packet_support is_supported; | |
4762 | char *p, *end, *name_end, *value; | |
4763 | ||
4764 | /* First separate out this item from the rest of the packet. If | |
4765 | there's another item after this, we overwrite the separator | |
4766 | (terminated strings are much easier to work with). */ | |
4767 | p = next; | |
4768 | end = strchr (p, ';'); | |
4769 | if (end == NULL) | |
4770 | { | |
4771 | end = p + strlen (p); | |
4772 | next = end; | |
4773 | } | |
4774 | else | |
4775 | { | |
89be2091 DJ |
4776 | *end = '\0'; |
4777 | next = end + 1; | |
4778 | ||
be2a5f71 DJ |
4779 | if (end == p) |
4780 | { | |
4781 | warning (_("empty item in \"qSupported\" response")); | |
4782 | continue; | |
4783 | } | |
be2a5f71 DJ |
4784 | } |
4785 | ||
4786 | name_end = strchr (p, '='); | |
4787 | if (name_end) | |
4788 | { | |
4789 | /* This is a name=value entry. */ | |
4790 | is_supported = PACKET_ENABLE; | |
4791 | value = name_end + 1; | |
4792 | *name_end = '\0'; | |
4793 | } | |
4794 | else | |
4795 | { | |
4796 | value = NULL; | |
4797 | switch (end[-1]) | |
4798 | { | |
4799 | case '+': | |
4800 | is_supported = PACKET_ENABLE; | |
4801 | break; | |
4802 | ||
4803 | case '-': | |
4804 | is_supported = PACKET_DISABLE; | |
4805 | break; | |
4806 | ||
4807 | case '?': | |
4808 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4809 | break; | |
4810 | ||
4811 | default: | |
3e43a32a MS |
4812 | warning (_("unrecognized item \"%s\" " |
4813 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4814 | continue; |
4815 | } | |
4816 | end[-1] = '\0'; | |
4817 | } | |
4818 | ||
4819 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4820 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4821 | { | |
4822 | const struct protocol_feature *feature; | |
4823 | ||
4824 | seen[i] = 1; | |
4825 | feature = &remote_protocol_features[i]; | |
4826 | feature->func (feature, is_supported, value); | |
4827 | break; | |
4828 | } | |
4829 | } | |
4830 | ||
4831 | /* If we increased the packet size, make sure to increase the global | |
4832 | buffer size also. We delay this until after parsing the entire | |
4833 | qSupported packet, because this is the same buffer we were | |
4834 | parsing. */ | |
4835 | if (rs->buf_size < rs->explicit_packet_size) | |
4836 | { | |
4837 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4838 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4839 | } |
4840 | ||
4841 | /* Handle the defaults for unmentioned features. */ | |
4842 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4843 | if (!seen[i]) | |
4844 | { | |
4845 | const struct protocol_feature *feature; | |
4846 | ||
4847 | feature = &remote_protocol_features[i]; | |
4848 | feature->func (feature, feature->default_support, NULL); | |
4849 | } | |
4850 | } | |
4851 | ||
048094ac PA |
4852 | /* Serial QUIT handler for the remote serial descriptor. |
4853 | ||
4854 | Defers handling a Ctrl-C until we're done with the current | |
4855 | command/response packet sequence, unless: | |
4856 | ||
4857 | - We're setting up the connection. Don't send a remote interrupt | |
4858 | request, as we're not fully synced yet. Quit immediately | |
4859 | instead. | |
4860 | ||
4861 | - The target has been resumed in the foreground | |
223ffa71 | 4862 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
4863 | packet, and we're blocked waiting for the stop reply, thus a |
4864 | Ctrl-C should be immediately sent to the target. | |
4865 | ||
4866 | - We get a second Ctrl-C while still within the same serial read or | |
4867 | write. In that case the serial is seemingly wedged --- offer to | |
4868 | quit/disconnect. | |
4869 | ||
4870 | - We see a second Ctrl-C without target response, after having | |
4871 | previously interrupted the target. In that case the target/stub | |
4872 | is probably wedged --- offer to quit/disconnect. | |
4873 | */ | |
4874 | ||
4875 | static void | |
4876 | remote_serial_quit_handler (void) | |
4877 | { | |
4878 | struct remote_state *rs = get_remote_state (); | |
4879 | ||
4880 | if (check_quit_flag ()) | |
4881 | { | |
4882 | /* If we're starting up, we're not fully synced yet. Quit | |
4883 | immediately. */ | |
4884 | if (rs->starting_up) | |
4885 | quit (); | |
4886 | else if (rs->got_ctrlc_during_io) | |
4887 | { | |
4888 | if (query (_("The target is not responding to GDB commands.\n" | |
4889 | "Stop debugging it? "))) | |
4890 | remote_unpush_and_throw (); | |
4891 | } | |
4892 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 4893 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
4894 | interrupt_query (); |
4895 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
4896 | an interrupt request. */ | |
223ffa71 | 4897 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 4898 | target_interrupt (); |
048094ac PA |
4899 | else |
4900 | rs->got_ctrlc_during_io = 1; | |
4901 | } | |
4902 | } | |
4903 | ||
78a095c3 JK |
4904 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4905 | on it so remove them first. */ | |
4906 | ||
4907 | static void | |
4908 | remote_unpush_target (void) | |
4909 | { | |
915ef8b1 | 4910 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 4911 | } |
be2a5f71 | 4912 | |
048094ac PA |
4913 | static void |
4914 | remote_unpush_and_throw (void) | |
4915 | { | |
4916 | remote_unpush_target (); | |
4917 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
4918 | } | |
4919 | ||
c906108c | 4920 | static void |
014f9477 | 4921 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4922 | struct target_ops *target, int extended_p) |
c906108c | 4923 | { |
d01949b6 | 4924 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4925 | |
c906108c | 4926 | if (name == 0) |
8a3fe4f8 | 4927 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4928 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4929 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4930 | |
23860348 | 4931 | /* See FIXME above. */ |
c6ebd6cf | 4932 | if (!target_async_permitted) |
92d1e331 | 4933 | wait_forever_enabled_p = 1; |
6426a772 | 4934 | |
2d717e4f | 4935 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4936 | Ask this question first, before target_preopen has a chance to kill |
4937 | anything. */ | |
5d93a237 | 4938 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4939 | { |
78a095c3 JK |
4940 | if (from_tty |
4941 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4942 | error (_("Still connected.")); |
4943 | } | |
4944 | ||
78a095c3 | 4945 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4946 | target_preopen (from_tty); |
4947 | ||
89be2091 | 4948 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4949 | xfree (rs->last_pass_packet); |
4950 | rs->last_pass_packet = NULL; | |
89be2091 | 4951 | |
9b224c5e PA |
4952 | /* Make sure we send the program signals list the next time we |
4953 | resume. */ | |
5e4a05c4 TT |
4954 | xfree (rs->last_program_signals_packet); |
4955 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4956 | |
ad9a8f3f | 4957 | remote_fileio_reset (); |
1dd41f16 NS |
4958 | reopen_exec_file (); |
4959 | reread_symbols (); | |
4960 | ||
5d93a237 TT |
4961 | rs->remote_desc = remote_serial_open (name); |
4962 | if (!rs->remote_desc) | |
c906108c SS |
4963 | perror_with_name (name); |
4964 | ||
4965 | if (baud_rate != -1) | |
4966 | { | |
5d93a237 | 4967 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4968 | { |
9b74d5d3 KB |
4969 | /* The requested speed could not be set. Error out to |
4970 | top level after closing remote_desc. Take care to | |
4971 | set remote_desc to NULL to avoid closing remote_desc | |
4972 | more than once. */ | |
5d93a237 TT |
4973 | serial_close (rs->remote_desc); |
4974 | rs->remote_desc = NULL; | |
c906108c SS |
4975 | perror_with_name (name); |
4976 | } | |
4977 | } | |
4978 | ||
236af5e3 | 4979 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4980 | serial_raw (rs->remote_desc); |
c906108c SS |
4981 | |
4982 | /* If there is something sitting in the buffer we might take it as a | |
4983 | response to a command, which would be bad. */ | |
5d93a237 | 4984 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4985 | |
4986 | if (from_tty) | |
4987 | { | |
4988 | puts_filtered ("Remote debugging using "); | |
4989 | puts_filtered (name); | |
4990 | puts_filtered ("\n"); | |
4991 | } | |
23860348 | 4992 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4993 | |
74531fed PA |
4994 | /* Register extra event sources in the event loop. */ |
4995 | remote_async_inferior_event_token | |
4996 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4997 | NULL); | |
5965e028 | 4998 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4999 | |
be2a5f71 DJ |
5000 | /* Reset the target state; these things will be queried either by |
5001 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5002 | reset_all_packet_configs_support (); |
74531fed | 5003 | rs->cached_wait_status = 0; |
be2a5f71 | 5004 | rs->explicit_packet_size = 0; |
a6f3e723 | 5005 | rs->noack_mode = 0; |
82f73884 | 5006 | rs->extended = extended_p; |
e24a49d8 | 5007 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5008 | rs->ctrlc_pending_p = 0; |
048094ac | 5009 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5010 | |
47f8a51d TT |
5011 | rs->general_thread = not_sent_ptid; |
5012 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5013 | rs->remote_traceframe_number = -1; |
c906108c | 5014 | |
3a00c802 PA |
5015 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5016 | ||
9d1f7ab2 | 5017 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5018 | rs->use_threadinfo_query = 1; |
5019 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5020 | |
80152258 PA |
5021 | readahead_cache_invalidate (); |
5022 | ||
c6ebd6cf | 5023 | if (target_async_permitted) |
92d1e331 | 5024 | { |
92d1e331 DJ |
5025 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5026 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5027 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5028 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5029 | around this. Eventually a mechanism that allows |
92d1e331 | 5030 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5031 | implemented. */ |
92d1e331 DJ |
5032 | wait_forever_enabled_p = 0; |
5033 | } | |
5034 | ||
23860348 | 5035 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5036 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5037 | |
74531fed PA |
5038 | /* Start afresh. */ |
5039 | init_thread_list (); | |
5040 | ||
36918e70 | 5041 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5042 | target (we'd otherwise be in an inconsistent state) and then |
5043 | propogate the error on up the exception chain. This ensures that | |
5044 | the caller doesn't stumble along blindly assuming that the | |
5045 | function succeeded. The CLI doesn't have this problem but other | |
5046 | UI's, such as MI do. | |
36918e70 AC |
5047 | |
5048 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5049 | this function should return an error indication letting the | |
ce2826aa | 5050 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5051 | ``target remote'' is directly wired to this function making that |
5052 | impossible. On a positive note, the CLI side of this problem has | |
5053 | been fixed - the function set_cmd_context() makes it possible for | |
5054 | all the ``target ....'' commands to share a common callback | |
5055 | function. See cli-dump.c. */ | |
109c3e39 | 5056 | { |
2d717e4f | 5057 | |
492d29ea | 5058 | TRY |
04bd08de TT |
5059 | { |
5060 | remote_start_remote (from_tty, target, extended_p); | |
5061 | } | |
492d29ea | 5062 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5063 | { |
c8d104ad PA |
5064 | /* Pop the partially set up target - unless something else did |
5065 | already before throwing the exception. */ | |
5d93a237 | 5066 | if (rs->remote_desc != NULL) |
78a095c3 | 5067 | remote_unpush_target (); |
c6ebd6cf | 5068 | if (target_async_permitted) |
109c3e39 AC |
5069 | wait_forever_enabled_p = 1; |
5070 | throw_exception (ex); | |
5071 | } | |
492d29ea | 5072 | END_CATCH |
109c3e39 | 5073 | } |
c906108c | 5074 | |
f4abbc16 MM |
5075 | remote_btrace_reset (); |
5076 | ||
c6ebd6cf | 5077 | if (target_async_permitted) |
92d1e331 | 5078 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5079 | } |
5080 | ||
de0d863e DB |
5081 | /* Detach the specified process. */ |
5082 | ||
5083 | static void | |
5084 | remote_detach_pid (int pid) | |
5085 | { | |
5086 | struct remote_state *rs = get_remote_state (); | |
5087 | ||
5088 | if (remote_multi_process_p (rs)) | |
5089 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5090 | else | |
5091 | strcpy (rs->buf, "D"); | |
5092 | ||
5093 | putpkt (rs->buf); | |
5094 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5095 | ||
5096 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5097 | ; | |
5098 | else if (rs->buf[0] == '\0') | |
5099 | error (_("Remote doesn't know how to detach")); | |
5100 | else | |
5101 | error (_("Can't detach process.")); | |
5102 | } | |
5103 | ||
5104 | /* This detaches a program to which we previously attached, using | |
5105 | inferior_ptid to identify the process. After this is done, GDB | |
5106 | can be used to debug some other program. We better not have left | |
5107 | any breakpoints in the target program or it'll die when it hits | |
5108 | one. */ | |
c906108c SS |
5109 | |
5110 | static void | |
6e1e1966 | 5111 | remote_detach_1 (int from_tty, inferior *inf) |
c906108c | 5112 | { |
82f73884 | 5113 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5114 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5115 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5116 | int is_fork_parent; | |
c906108c | 5117 | |
2d717e4f DJ |
5118 | if (!target_has_execution) |
5119 | error (_("No process to detach from.")); | |
5120 | ||
0f48b757 | 5121 | target_announce_detach (from_tty); |
7cee1e54 | 5122 | |
c906108c | 5123 | /* Tell the remote target to detach. */ |
de0d863e | 5124 | remote_detach_pid (pid); |
82f73884 | 5125 | |
8020350c DB |
5126 | /* Exit only if this is the only active inferior. */ |
5127 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5128 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5129 | |
de0d863e DB |
5130 | /* Check to see if we are detaching a fork parent. Note that if we |
5131 | are detaching a fork child, tp == NULL. */ | |
5132 | is_fork_parent = (tp != NULL | |
5133 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5134 | ||
5135 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5136 | breakpoints that should be available for the followed inferior. */ | |
5137 | if (!is_fork_parent) | |
f67c0c91 | 5138 | { |
249b5733 PA |
5139 | /* Save the pid as a string before mourning, since that will |
5140 | unpush the remote target, and we need the string after. */ | |
5141 | std::string infpid = target_pid_to_str (pid_to_ptid (pid)); | |
f67c0c91 SDJ |
5142 | |
5143 | target_mourn_inferior (inferior_ptid); | |
5144 | if (print_inferior_events) | |
5145 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5146 | inf->num, infpid.c_str ()); | |
5147 | } | |
de0d863e DB |
5148 | else |
5149 | { | |
5150 | inferior_ptid = null_ptid; | |
5151 | detach_inferior (pid); | |
5152 | } | |
2d717e4f DJ |
5153 | } |
5154 | ||
5155 | static void | |
6e1e1966 | 5156 | remote_detach (struct target_ops *ops, inferior *inf, int from_tty) |
2d717e4f | 5157 | { |
6e1e1966 | 5158 | remote_detach_1 (from_tty, inf); |
2d717e4f DJ |
5159 | } |
5160 | ||
5161 | static void | |
6e1e1966 | 5162 | extended_remote_detach (struct target_ops *ops, inferior *inf, int from_tty) |
2d717e4f | 5163 | { |
6e1e1966 | 5164 | remote_detach_1 (from_tty, inf); |
de0d863e DB |
5165 | } |
5166 | ||
5167 | /* Target follow-fork function for remote targets. On entry, and | |
5168 | at return, the current inferior is the fork parent. | |
5169 | ||
5170 | Note that although this is currently only used for extended-remote, | |
5171 | it is named remote_follow_fork in anticipation of using it for the | |
5172 | remote target as well. */ | |
5173 | ||
5174 | static int | |
5175 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5176 | int detach_fork) | |
5177 | { | |
5178 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5179 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5180 | |
c269dbdb DB |
5181 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5182 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5183 | { |
5184 | /* When following the parent and detaching the child, we detach | |
5185 | the child here. For the case of following the child and | |
5186 | detaching the parent, the detach is done in the target- | |
5187 | independent follow fork code in infrun.c. We can't use | |
5188 | target_detach when detaching an unfollowed child because | |
5189 | the client side doesn't know anything about the child. */ | |
5190 | if (detach_fork && !follow_child) | |
5191 | { | |
5192 | /* Detach the fork child. */ | |
5193 | ptid_t child_ptid; | |
5194 | pid_t child_pid; | |
5195 | ||
5196 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5197 | child_pid = ptid_get_pid (child_ptid); | |
5198 | ||
5199 | remote_detach_pid (child_pid); | |
de0d863e DB |
5200 | } |
5201 | } | |
5202 | return 0; | |
c906108c SS |
5203 | } |
5204 | ||
94585166 DB |
5205 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5206 | in the program space of the new inferior. On entry and at return the | |
5207 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5208 | inferior, which may be the same as the exec'ing inferior unless | |
5209 | follow-exec-mode is "new". */ | |
5210 | ||
5211 | static void | |
5212 | remote_follow_exec (struct target_ops *ops, | |
5213 | struct inferior *inf, char *execd_pathname) | |
5214 | { | |
5215 | /* We know that this is a target file name, so if it has the "target:" | |
5216 | prefix we strip it off before saving it in the program space. */ | |
5217 | if (is_target_filename (execd_pathname)) | |
5218 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5219 | ||
5220 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5221 | } | |
5222 | ||
6ad8ae5c DJ |
5223 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5224 | ||
43ff13b4 | 5225 | static void |
fee354ee | 5226 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5227 | { |
43ff13b4 | 5228 | if (args) |
2d717e4f | 5229 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5230 | |
8020350c DB |
5231 | /* Make sure we unpush even the extended remote targets. Calling |
5232 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5233 | unpush if there is more than one inferior left. */ | |
5234 | unpush_target (target); | |
5235 | generic_mourn_inferior (); | |
2d717e4f | 5236 | |
43ff13b4 JM |
5237 | if (from_tty) |
5238 | puts_filtered ("Ending remote debugging.\n"); | |
5239 | } | |
5240 | ||
2d717e4f DJ |
5241 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5242 | be chatty about it. */ | |
5243 | ||
5244 | static void | |
20f796c9 GB |
5245 | extended_remote_attach (struct target_ops *target, const char *args, |
5246 | int from_tty) | |
2d717e4f DJ |
5247 | { |
5248 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5249 | int pid; |
96ef3384 | 5250 | char *wait_status = NULL; |
2d717e4f | 5251 | |
74164c56 | 5252 | pid = parse_pid_to_attach (args); |
2d717e4f | 5253 | |
74164c56 JK |
5254 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5255 | way as in other targets. */ | |
2d717e4f | 5256 | |
4082afcc | 5257 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5258 | error (_("This target does not support attaching to a process")); |
5259 | ||
7cee1e54 PA |
5260 | if (from_tty) |
5261 | { | |
5262 | char *exec_file = get_exec_file (0); | |
5263 | ||
5264 | if (exec_file) | |
5265 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5266 | target_pid_to_str (pid_to_ptid (pid))); | |
5267 | else | |
5268 | printf_unfiltered (_("Attaching to %s\n"), | |
5269 | target_pid_to_str (pid_to_ptid (pid))); | |
5270 | ||
5271 | gdb_flush (gdb_stdout); | |
5272 | } | |
5273 | ||
bba74b36 | 5274 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5275 | putpkt (rs->buf); |
5276 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5277 | ||
4082afcc PA |
5278 | switch (packet_ok (rs->buf, |
5279 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5280 | { |
4082afcc | 5281 | case PACKET_OK: |
6efcd9a8 | 5282 | if (!target_is_non_stop_p ()) |
74531fed PA |
5283 | { |
5284 | /* Save the reply for later. */ | |
224c3ddb | 5285 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5286 | strcpy (wait_status, rs->buf); |
5287 | } | |
5288 | else if (strcmp (rs->buf, "OK") != 0) | |
5289 | error (_("Attaching to %s failed with: %s"), | |
5290 | target_pid_to_str (pid_to_ptid (pid)), | |
5291 | rs->buf); | |
4082afcc PA |
5292 | break; |
5293 | case PACKET_UNKNOWN: | |
5294 | error (_("This target does not support attaching to a process")); | |
5295 | default: | |
5296 | error (_("Attaching to %s failed"), | |
5297 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5298 | } |
2d717e4f | 5299 | |
1b6e6f5c | 5300 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5301 | |
2d717e4f | 5302 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5303 | |
6efcd9a8 | 5304 | if (target_is_non_stop_p ()) |
bad34192 PA |
5305 | { |
5306 | struct thread_info *thread; | |
79d7f229 | 5307 | |
bad34192 | 5308 | /* Get list of threads. */ |
e8032dde | 5309 | remote_update_thread_list (target); |
82f73884 | 5310 | |
bad34192 PA |
5311 | thread = first_thread_of_process (pid); |
5312 | if (thread) | |
5313 | inferior_ptid = thread->ptid; | |
5314 | else | |
5315 | inferior_ptid = pid_to_ptid (pid); | |
5316 | ||
5317 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5318 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5319 | } |
74531fed | 5320 | else |
bad34192 PA |
5321 | { |
5322 | /* Now, if we have thread information, update inferior_ptid. */ | |
5323 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5324 | ||
5325 | /* Add the main thread to the thread list. */ | |
00aecdcf PA |
5326 | thread_info *thr = add_thread_silent (inferior_ptid); |
5327 | /* Don't consider the thread stopped until we've processed the | |
5328 | saved stop reply. */ | |
5329 | set_executing (thr->ptid, true); | |
bad34192 | 5330 | } |
c0a2216e | 5331 | |
96ef3384 UW |
5332 | /* Next, if the target can specify a description, read it. We do |
5333 | this before anything involving memory or registers. */ | |
5334 | target_find_description (); | |
5335 | ||
6efcd9a8 | 5336 | if (!target_is_non_stop_p ()) |
74531fed PA |
5337 | { |
5338 | /* Use the previously fetched status. */ | |
5339 | gdb_assert (wait_status != NULL); | |
5340 | ||
5341 | if (target_can_async_p ()) | |
5342 | { | |
722247f1 YQ |
5343 | struct notif_event *reply |
5344 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5345 | |
722247f1 | 5346 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5347 | |
6a3753b3 | 5348 | target_async (1); |
74531fed PA |
5349 | } |
5350 | else | |
5351 | { | |
5352 | gdb_assert (wait_status != NULL); | |
5353 | strcpy (rs->buf, wait_status); | |
5354 | rs->cached_wait_status = 1; | |
5355 | } | |
5356 | } | |
5357 | else | |
5358 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5359 | } |
5360 | ||
b9c1d481 AS |
5361 | /* Implementation of the to_post_attach method. */ |
5362 | ||
5363 | static void | |
5364 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5365 | { | |
6efcd9a8 PA |
5366 | /* Get text, data & bss offsets. */ |
5367 | get_offsets (); | |
5368 | ||
b9c1d481 AS |
5369 | /* In certain cases GDB might not have had the chance to start |
5370 | symbol lookup up until now. This could happen if the debugged | |
5371 | binary is not using shared libraries, the vsyscall page is not | |
5372 | present (on Linux) and the binary itself hadn't changed since the | |
5373 | debugging process was started. */ | |
5374 | if (symfile_objfile != NULL) | |
5375 | remote_check_symbols(); | |
5376 | } | |
5377 | ||
c906108c | 5378 | \f |
506fb367 DJ |
5379 | /* Check for the availability of vCont. This function should also check |
5380 | the response. */ | |
c906108c SS |
5381 | |
5382 | static void | |
6d820c5c | 5383 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5384 | { |
2e9f7625 | 5385 | char *buf; |
6d820c5c | 5386 | |
2e9f7625 DJ |
5387 | strcpy (rs->buf, "vCont?"); |
5388 | putpkt (rs->buf); | |
6d820c5c | 5389 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5390 | buf = rs->buf; |
c906108c | 5391 | |
506fb367 | 5392 | /* Make sure that the features we assume are supported. */ |
61012eef | 5393 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5394 | { |
5395 | char *p = &buf[5]; | |
750ce8d1 | 5396 | int support_c, support_C; |
506fb367 | 5397 | |
750ce8d1 YQ |
5398 | rs->supports_vCont.s = 0; |
5399 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5400 | support_c = 0; |
5401 | support_C = 0; | |
d458bd84 | 5402 | rs->supports_vCont.t = 0; |
c1e36e3e | 5403 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5404 | while (p && *p == ';') |
5405 | { | |
5406 | p++; | |
5407 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5408 | rs->supports_vCont.s = 1; |
506fb367 | 5409 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5410 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5411 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5412 | support_c = 1; | |
5413 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5414 | support_C = 1; | |
74531fed | 5415 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5416 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5417 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5418 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5419 | |
5420 | p = strchr (p, ';'); | |
5421 | } | |
c906108c | 5422 | |
750ce8d1 YQ |
5423 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5424 | BUF will make packet_ok disable the packet. */ | |
5425 | if (!support_c || !support_C) | |
506fb367 DJ |
5426 | buf[0] = 0; |
5427 | } | |
c906108c | 5428 | |
444abaca | 5429 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5430 | } |
c906108c | 5431 | |
0d8f58ca PA |
5432 | /* Helper function for building "vCont" resumptions. Write a |
5433 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5434 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5435 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5436 | resumed thread should be single-stepped and/or signalled. If PTID | |
5437 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5438 | represents a process, then all threads of the process are resumed; | |
5439 | the thread to be stepped and/or signalled is given in the global | |
5440 | INFERIOR_PTID. */ | |
5441 | ||
5442 | static char * | |
5443 | append_resumption (char *p, char *endp, | |
2ea28649 | 5444 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5445 | { |
5446 | struct remote_state *rs = get_remote_state (); | |
5447 | ||
a493e3e2 | 5448 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5449 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5450 | else if (step |
5451 | /* GDB is willing to range step. */ | |
5452 | && use_range_stepping | |
5453 | /* Target supports range stepping. */ | |
5454 | && rs->supports_vCont.r | |
5455 | /* We don't currently support range stepping multiple | |
5456 | threads with a wildcard (though the protocol allows it, | |
5457 | so stubs shouldn't make an active effort to forbid | |
5458 | it). */ | |
5459 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5460 | { | |
5461 | struct thread_info *tp; | |
5462 | ||
5463 | if (ptid_equal (ptid, minus_one_ptid)) | |
5464 | { | |
5465 | /* If we don't know about the target thread's tid, then | |
5466 | we're resuming magic_null_ptid (see caller). */ | |
5467 | tp = find_thread_ptid (magic_null_ptid); | |
5468 | } | |
5469 | else | |
5470 | tp = find_thread_ptid (ptid); | |
5471 | gdb_assert (tp != NULL); | |
5472 | ||
5473 | if (tp->control.may_range_step) | |
5474 | { | |
5475 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5476 | ||
5477 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5478 | phex_nz (tp->control.step_range_start, | |
5479 | addr_size), | |
5480 | phex_nz (tp->control.step_range_end, | |
5481 | addr_size)); | |
5482 | } | |
5483 | else | |
5484 | p += xsnprintf (p, endp - p, ";s"); | |
5485 | } | |
0d8f58ca PA |
5486 | else if (step) |
5487 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5488 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5489 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5490 | else | |
5491 | p += xsnprintf (p, endp - p, ";c"); | |
5492 | ||
5493 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5494 | { | |
5495 | ptid_t nptid; | |
5496 | ||
5497 | /* All (-1) threads of process. */ | |
ba348170 | 5498 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5499 | |
5500 | p += xsnprintf (p, endp - p, ":"); | |
5501 | p = write_ptid (p, endp, nptid); | |
5502 | } | |
5503 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5504 | { | |
5505 | p += xsnprintf (p, endp - p, ":"); | |
5506 | p = write_ptid (p, endp, ptid); | |
5507 | } | |
5508 | ||
5509 | return p; | |
5510 | } | |
5511 | ||
799a2abe PA |
5512 | /* Clear the thread's private info on resume. */ |
5513 | ||
5514 | static void | |
5515 | resume_clear_thread_private_info (struct thread_info *thread) | |
5516 | { | |
5517 | if (thread->priv != NULL) | |
5518 | { | |
7aabaf9d SM |
5519 | remote_thread_info *priv = get_remote_thread_info (thread); |
5520 | ||
5521 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5522 | priv->watch_data_address = 0; | |
799a2abe PA |
5523 | } |
5524 | } | |
5525 | ||
e5ef252a PA |
5526 | /* Append a vCont continue-with-signal action for threads that have a |
5527 | non-zero stop signal. */ | |
5528 | ||
5529 | static char * | |
5530 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5531 | { | |
5532 | struct thread_info *thread; | |
5533 | ||
034f788c | 5534 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5535 | if (ptid_match (thread->ptid, ptid) |
5536 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5537 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5538 | { |
5539 | p = append_resumption (p, endp, thread->ptid, | |
5540 | 0, thread->suspend.stop_signal); | |
5541 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5542 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5543 | } |
5544 | ||
5545 | return p; | |
5546 | } | |
5547 | ||
7b68ffbb PA |
5548 | /* Set the target running, using the packets that use Hc |
5549 | (c/s/C/S). */ | |
5550 | ||
5551 | static void | |
5552 | remote_resume_with_hc (struct target_ops *ops, | |
5553 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5554 | { | |
5555 | struct remote_state *rs = get_remote_state (); | |
5556 | struct thread_info *thread; | |
5557 | char *buf; | |
5558 | ||
5559 | rs->last_sent_signal = siggnal; | |
5560 | rs->last_sent_step = step; | |
5561 | ||
5562 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5563 | thread. */ | |
5564 | if (ptid_equal (ptid, minus_one_ptid)) | |
5565 | set_continue_thread (any_thread_ptid); | |
5566 | else | |
5567 | set_continue_thread (ptid); | |
5568 | ||
5569 | ALL_NON_EXITED_THREADS (thread) | |
5570 | resume_clear_thread_private_info (thread); | |
5571 | ||
5572 | buf = rs->buf; | |
5573 | if (execution_direction == EXEC_REVERSE) | |
5574 | { | |
5575 | /* We don't pass signals to the target in reverse exec mode. */ | |
5576 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5577 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5578 | siggnal); | |
5579 | ||
5580 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5581 | error (_("Remote reverse-step not supported.")); | |
5582 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5583 | error (_("Remote reverse-continue not supported.")); | |
5584 | ||
5585 | strcpy (buf, step ? "bs" : "bc"); | |
5586 | } | |
5587 | else if (siggnal != GDB_SIGNAL_0) | |
5588 | { | |
5589 | buf[0] = step ? 'S' : 'C'; | |
5590 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5591 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5592 | buf[3] = '\0'; | |
5593 | } | |
5594 | else | |
5595 | strcpy (buf, step ? "s" : "c"); | |
5596 | ||
5597 | putpkt (buf); | |
5598 | } | |
5599 | ||
506fb367 DJ |
5600 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5601 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5602 | resumed thread should be single-stepped and/or signalled. If PTID |
5603 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5604 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5605 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5606 | |
7b68ffbb PA |
5607 | This function issues a strict subset of all possible vCont commands |
5608 | at the moment. */ | |
44eaed12 | 5609 | |
506fb367 | 5610 | static int |
7b68ffbb | 5611 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5612 | { |
5613 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5614 | char *p; |
5615 | char *endp; | |
44eaed12 | 5616 | |
7b68ffbb PA |
5617 | /* No reverse execution actions defined for vCont. */ |
5618 | if (execution_direction == EXEC_REVERSE) | |
5619 | return 0; | |
5620 | ||
4082afcc | 5621 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5622 | remote_vcont_probe (rs); |
44eaed12 | 5623 | |
4082afcc | 5624 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5625 | return 0; |
44eaed12 | 5626 | |
82f73884 PA |
5627 | p = rs->buf; |
5628 | endp = rs->buf + get_remote_packet_size (); | |
5629 | ||
506fb367 DJ |
5630 | /* If we could generate a wider range of packets, we'd have to worry |
5631 | about overflowing BUF. Should there be a generic | |
5632 | "multi-part-packet" packet? */ | |
5633 | ||
0d8f58ca PA |
5634 | p += xsnprintf (p, endp - p, "vCont"); |
5635 | ||
79d7f229 | 5636 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5637 | { |
79d7f229 PA |
5638 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5639 | so we don't have any TID numbers the inferior will | |
5640 | understand. Make sure to only send forms that do not specify | |
5641 | a TID. */ | |
a9cbf802 | 5642 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5643 | } |
0d8f58ca | 5644 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5645 | { |
0d8f58ca PA |
5646 | /* Resume all threads (of all processes, or of a single |
5647 | process), with preference for INFERIOR_PTID. This assumes | |
5648 | inferior_ptid belongs to the set of all threads we are about | |
5649 | to resume. */ | |
a493e3e2 | 5650 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5651 | { |
0d8f58ca PA |
5652 | /* Step inferior_ptid, with or without signal. */ |
5653 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5654 | } |
0d8f58ca | 5655 | |
e5ef252a PA |
5656 | /* Also pass down any pending signaled resumption for other |
5657 | threads not the current. */ | |
5658 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5659 | ||
0d8f58ca | 5660 | /* And continue others without a signal. */ |
a493e3e2 | 5661 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5662 | } |
5663 | else | |
506fb367 DJ |
5664 | { |
5665 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5666 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5667 | } |
c906108c | 5668 | |
82f73884 PA |
5669 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5670 | putpkt (rs->buf); | |
506fb367 | 5671 | |
6efcd9a8 | 5672 | if (target_is_non_stop_p ()) |
74531fed PA |
5673 | { |
5674 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5675 | reply will be reported asynchronously by means of a `%Stop' | |
5676 | notification. */ | |
5677 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5678 | if (strcmp (rs->buf, "OK") != 0) | |
5679 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5680 | } | |
5681 | ||
506fb367 | 5682 | return 1; |
c906108c | 5683 | } |
43ff13b4 | 5684 | |
506fb367 DJ |
5685 | /* Tell the remote machine to resume. */ |
5686 | ||
43ff13b4 | 5687 | static void |
28439f5e | 5688 | remote_resume (struct target_ops *ops, |
2ea28649 | 5689 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5690 | { |
d01949b6 | 5691 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 5692 | |
85ad3aaf PA |
5693 | /* When connected in non-stop mode, the core resumes threads |
5694 | individually. Resuming remote threads directly in target_resume | |
5695 | would thus result in sending one packet per thread. Instead, to | |
5696 | minimize roundtrip latency, here we just store the resume | |
5697 | request; the actual remote resumption will be done in | |
5698 | target_commit_resume / remote_commit_resume, where we'll be able | |
5699 | to do vCont action coalescing. */ | |
5700 | if (target_is_non_stop_p () && execution_direction != EXEC_REVERSE) | |
5701 | { | |
7aabaf9d | 5702 | remote_thread_info *remote_thr; |
85ad3aaf PA |
5703 | |
5704 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
7aabaf9d | 5705 | remote_thr = get_remote_thread_info (inferior_ptid); |
85ad3aaf | 5706 | else |
7aabaf9d SM |
5707 | remote_thr = get_remote_thread_info (ptid); |
5708 | ||
85ad3aaf PA |
5709 | remote_thr->last_resume_step = step; |
5710 | remote_thr->last_resume_sig = siggnal; | |
5711 | return; | |
5712 | } | |
5713 | ||
722247f1 YQ |
5714 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5715 | (explained in remote-notif.c:handle_notification) so | |
5716 | remote_notif_process is not called. We need find a place where | |
5717 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5718 | before resuming inferior, because inferior was stopped and no RSP | |
5719 | traffic at that moment. */ | |
6efcd9a8 | 5720 | if (!target_is_non_stop_p ()) |
5965e028 | 5721 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5722 | |
3a00c802 PA |
5723 | rs->last_resume_exec_dir = execution_direction; |
5724 | ||
7b68ffbb PA |
5725 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
5726 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
5727 | remote_resume_with_hc (ops, ptid, step, siggnal); | |
43ff13b4 | 5728 | |
2acceee2 | 5729 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5730 | with the event loop. NOTE: this is the one place where all the |
5731 | execution commands end up. We could alternatively do this in each | |
23860348 | 5732 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5733 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5734 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5735 | NOT asynchronously. */ |
362646f5 | 5736 | if (target_can_async_p ()) |
6a3753b3 | 5737 | target_async (1); |
e24a49d8 PA |
5738 | |
5739 | /* We've just told the target to resume. The remote server will | |
5740 | wait for the inferior to stop, and then send a stop reply. In | |
5741 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5742 | because the stub wouldn't be ready to process it. This applies |
5743 | only to the base all-stop protocol, however. In non-stop (which | |
5744 | only supports vCont), the stub replies with an "OK", and is | |
5745 | immediate able to process further serial input. */ | |
6efcd9a8 | 5746 | if (!target_is_non_stop_p ()) |
74531fed | 5747 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5748 | } |
85ad3aaf PA |
5749 | |
5750 | static void check_pending_events_prevent_wildcard_vcont | |
5751 | (int *may_global_wildcard_vcont); | |
5752 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
5753 | ||
5754 | /* Private per-inferior info for target remote processes. */ | |
5755 | ||
089354bb | 5756 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
5757 | { |
5758 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 5759 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
5760 | }; |
5761 | ||
089354bb SM |
5762 | /* Get the remote private inferior data associated to INF. */ |
5763 | ||
5764 | static remote_inferior * | |
5765 | get_remote_inferior (inferior *inf) | |
5766 | { | |
5767 | if (inf->priv == NULL) | |
5768 | inf->priv.reset (new remote_inferior); | |
5769 | ||
5770 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
5771 | } | |
5772 | ||
85ad3aaf PA |
5773 | /* Structure used to track the construction of a vCont packet in the |
5774 | outgoing packet buffer. This is used to send multiple vCont | |
5775 | packets if we have more actions than would fit a single packet. */ | |
5776 | ||
5777 | struct vcont_builder | |
5778 | { | |
5779 | /* Pointer to the first action. P points here if no action has been | |
5780 | appended yet. */ | |
5781 | char *first_action; | |
5782 | ||
5783 | /* Where the next action will be appended. */ | |
5784 | char *p; | |
5785 | ||
5786 | /* The end of the buffer. Must never write past this. */ | |
5787 | char *endp; | |
5788 | }; | |
5789 | ||
5790 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
5791 | ||
5792 | static void | |
5793 | vcont_builder_restart (struct vcont_builder *builder) | |
5794 | { | |
5795 | struct remote_state *rs = get_remote_state (); | |
5796 | ||
5797 | builder->p = rs->buf; | |
5798 | builder->endp = rs->buf + get_remote_packet_size (); | |
5799 | builder->p += xsnprintf (builder->p, builder->endp - builder->p, "vCont"); | |
5800 | builder->first_action = builder->p; | |
5801 | } | |
5802 | ||
5803 | /* If the vCont packet being built has any action, send it to the | |
5804 | remote end. */ | |
5805 | ||
5806 | static void | |
5807 | vcont_builder_flush (struct vcont_builder *builder) | |
5808 | { | |
5809 | struct remote_state *rs; | |
5810 | ||
5811 | if (builder->p == builder->first_action) | |
5812 | return; | |
5813 | ||
5814 | rs = get_remote_state (); | |
5815 | putpkt (rs->buf); | |
5816 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5817 | if (strcmp (rs->buf, "OK") != 0) | |
5818 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5819 | } | |
5820 | ||
5821 | /* The largest action is range-stepping, with its two addresses. This | |
5822 | is more than sufficient. If a new, bigger action is created, it'll | |
5823 | quickly trigger a failed assertion in append_resumption (and we'll | |
5824 | just bump this). */ | |
5825 | #define MAX_ACTION_SIZE 200 | |
5826 | ||
5827 | /* Append a new vCont action in the outgoing packet being built. If | |
5828 | the action doesn't fit the packet along with previous actions, push | |
5829 | what we've got so far to the remote end and start over a new vCont | |
5830 | packet (with the new action). */ | |
5831 | ||
5832 | static void | |
5833 | vcont_builder_push_action (struct vcont_builder *builder, | |
5834 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5835 | { | |
5836 | char buf[MAX_ACTION_SIZE + 1]; | |
5837 | char *endp; | |
5838 | size_t rsize; | |
5839 | ||
5840 | endp = append_resumption (buf, buf + sizeof (buf), | |
5841 | ptid, step, siggnal); | |
5842 | ||
5843 | /* Check whether this new action would fit in the vCont packet along | |
5844 | with previous actions. If not, send what we've got so far and | |
5845 | start a new vCont packet. */ | |
5846 | rsize = endp - buf; | |
5847 | if (rsize > builder->endp - builder->p) | |
5848 | { | |
5849 | vcont_builder_flush (builder); | |
5850 | vcont_builder_restart (builder); | |
5851 | ||
5852 | /* Should now fit. */ | |
5853 | gdb_assert (rsize <= builder->endp - builder->p); | |
5854 | } | |
5855 | ||
5856 | memcpy (builder->p, buf, rsize); | |
5857 | builder->p += rsize; | |
5858 | *builder->p = '\0'; | |
5859 | } | |
5860 | ||
5861 | /* to_commit_resume implementation. */ | |
5862 | ||
5863 | static void | |
5864 | remote_commit_resume (struct target_ops *ops) | |
5865 | { | |
85ad3aaf PA |
5866 | struct inferior *inf; |
5867 | struct thread_info *tp; | |
5868 | int any_process_wildcard; | |
5869 | int may_global_wildcard_vcont; | |
5870 | struct vcont_builder vcont_builder; | |
5871 | ||
5872 | /* If connected in all-stop mode, we'd send the remote resume | |
5873 | request directly from remote_resume. Likewise if | |
5874 | reverse-debugging, as there are no defined vCont actions for | |
5875 | reverse execution. */ | |
5876 | if (!target_is_non_stop_p () || execution_direction == EXEC_REVERSE) | |
5877 | return; | |
5878 | ||
5879 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
5880 | instead of resuming all threads of each process individually. | |
5881 | However, if any thread of a process must remain halted, we can't | |
5882 | send wildcard resumes and must send one action per thread. | |
5883 | ||
5884 | Care must be taken to not resume threads/processes the server | |
5885 | side already told us are stopped, but the core doesn't know about | |
5886 | yet, because the events are still in the vStopped notification | |
5887 | queue. For example: | |
5888 | ||
5889 | #1 => vCont s:p1.1;c | |
5890 | #2 <= OK | |
5891 | #3 <= %Stopped T05 p1.1 | |
5892 | #4 => vStopped | |
5893 | #5 <= T05 p1.2 | |
5894 | #6 => vStopped | |
5895 | #7 <= OK | |
5896 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
5897 | #9 => vCont s:p1.1;c | |
5898 | ||
5899 | The last vCont above would resume thread p1.2 by mistake, because | |
5900 | the server has no idea that the event for p1.2 had not been | |
5901 | handled yet. | |
5902 | ||
5903 | The server side must similarly ignore resume actions for the | |
5904 | thread that has a pending %Stopped notification (and any other | |
5905 | threads with events pending), until GDB acks the notification | |
5906 | with vStopped. Otherwise, e.g., the following case is | |
5907 | mishandled: | |
5908 | ||
5909 | #1 => g (or any other packet) | |
5910 | #2 <= [registers] | |
5911 | #3 <= %Stopped T05 p1.2 | |
5912 | #4 => vCont s:p1.1;c | |
5913 | #5 <= OK | |
5914 | ||
5915 | Above, the server must not resume thread p1.2. GDB can't know | |
5916 | that p1.2 stopped until it acks the %Stopped notification, and | |
5917 | since from GDB's perspective all threads should be running, it | |
5918 | sends a "c" action. | |
5919 | ||
5920 | Finally, special care must also be given to handling fork/vfork | |
5921 | events. A (v)fork event actually tells us that two processes | |
5922 | stopped -- the parent and the child. Until we follow the fork, | |
5923 | we must not resume the child. Therefore, if we have a pending | |
5924 | fork follow, we must not send a global wildcard resume action | |
5925 | (vCont;c). We can still send process-wide wildcards though. */ | |
5926 | ||
5927 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
5928 | may_global_wildcard_vcont = 1; | |
5929 | ||
5930 | /* And assume every process is individually wildcard-able too. */ | |
5931 | ALL_NON_EXITED_INFERIORS (inf) | |
5932 | { | |
089354bb SM |
5933 | remote_inferior *priv = get_remote_inferior (inf); |
5934 | ||
5935 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
5936 | } |
5937 | ||
5938 | /* Check for any pending events (not reported or processed yet) and | |
5939 | disable process and global wildcard resumes appropriately. */ | |
5940 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
5941 | ||
5942 | ALL_NON_EXITED_THREADS (tp) | |
5943 | { | |
5944 | /* If a thread of a process is not meant to be resumed, then we | |
5945 | can't wildcard that process. */ | |
5946 | if (!tp->executing) | |
5947 | { | |
089354bb | 5948 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
5949 | |
5950 | /* And if we can't wildcard a process, we can't wildcard | |
5951 | everything either. */ | |
5952 | may_global_wildcard_vcont = 0; | |
5953 | continue; | |
5954 | } | |
5955 | ||
5956 | /* If a thread is the parent of an unfollowed fork, then we | |
5957 | can't do a global wildcard, as that would resume the fork | |
5958 | child. */ | |
5959 | if (is_pending_fork_parent_thread (tp)) | |
5960 | may_global_wildcard_vcont = 0; | |
5961 | } | |
5962 | ||
5963 | /* Now let's build the vCont packet(s). Actions must be appended | |
5964 | from narrower to wider scopes (thread -> process -> global). If | |
5965 | we end up with too many actions for a single packet vcont_builder | |
5966 | flushes the current vCont packet to the remote side and starts a | |
5967 | new one. */ | |
5968 | vcont_builder_restart (&vcont_builder); | |
5969 | ||
5970 | /* Threads first. */ | |
5971 | ALL_NON_EXITED_THREADS (tp) | |
5972 | { | |
7aabaf9d | 5973 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
5974 | |
5975 | if (!tp->executing || remote_thr->vcont_resumed) | |
5976 | continue; | |
5977 | ||
5978 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
5979 | ||
5980 | if (!remote_thr->last_resume_step | |
5981 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 5982 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
5983 | { |
5984 | /* We'll send a wildcard resume instead. */ | |
5985 | remote_thr->vcont_resumed = 1; | |
5986 | continue; | |
5987 | } | |
5988 | ||
5989 | vcont_builder_push_action (&vcont_builder, tp->ptid, | |
5990 | remote_thr->last_resume_step, | |
5991 | remote_thr->last_resume_sig); | |
5992 | remote_thr->vcont_resumed = 1; | |
5993 | } | |
5994 | ||
5995 | /* Now check whether we can send any process-wide wildcard. This is | |
5996 | to avoid sending a global wildcard in the case nothing is | |
5997 | supposed to be resumed. */ | |
5998 | any_process_wildcard = 0; | |
5999 | ||
6000 | ALL_NON_EXITED_INFERIORS (inf) | |
6001 | { | |
089354bb | 6002 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6003 | { |
6004 | any_process_wildcard = 1; | |
6005 | break; | |
6006 | } | |
6007 | } | |
6008 | ||
6009 | if (any_process_wildcard) | |
6010 | { | |
6011 | /* If all processes are wildcard-able, then send a single "c" | |
6012 | action, otherwise, send an "all (-1) threads of process" | |
6013 | continue action for each running process, if any. */ | |
6014 | if (may_global_wildcard_vcont) | |
6015 | { | |
6016 | vcont_builder_push_action (&vcont_builder, minus_one_ptid, | |
6017 | 0, GDB_SIGNAL_0); | |
6018 | } | |
6019 | else | |
6020 | { | |
6021 | ALL_NON_EXITED_INFERIORS (inf) | |
6022 | { | |
089354bb | 6023 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6024 | { |
6025 | vcont_builder_push_action (&vcont_builder, | |
6026 | pid_to_ptid (inf->pid), | |
6027 | 0, GDB_SIGNAL_0); | |
6028 | } | |
6029 | } | |
6030 | } | |
6031 | } | |
6032 | ||
6033 | vcont_builder_flush (&vcont_builder); | |
6034 | } | |
6035 | ||
c906108c | 6036 | \f |
43ff13b4 | 6037 | |
74531fed PA |
6038 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6039 | thread, all threads of a remote process, or all threads of all | |
6040 | processes. */ | |
6041 | ||
6042 | static void | |
6043 | remote_stop_ns (ptid_t ptid) | |
6044 | { | |
6045 | struct remote_state *rs = get_remote_state (); | |
6046 | char *p = rs->buf; | |
6047 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6048 | |
4082afcc | 6049 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6050 | remote_vcont_probe (rs); |
6051 | ||
d458bd84 | 6052 | if (!rs->supports_vCont.t) |
74531fed PA |
6053 | error (_("Remote server does not support stopping threads")); |
6054 | ||
f91d3df5 PA |
6055 | if (ptid_equal (ptid, minus_one_ptid) |
6056 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6057 | p += xsnprintf (p, endp - p, "vCont;t"); |
6058 | else | |
6059 | { | |
6060 | ptid_t nptid; | |
6061 | ||
74531fed PA |
6062 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6063 | ||
6064 | if (ptid_is_pid (ptid)) | |
6065 | /* All (-1) threads of process. */ | |
ba348170 | 6066 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6067 | else |
6068 | { | |
6069 | /* Small optimization: if we already have a stop reply for | |
6070 | this thread, no use in telling the stub we want this | |
6071 | stopped. */ | |
6072 | if (peek_stop_reply (ptid)) | |
6073 | return; | |
6074 | ||
6075 | nptid = ptid; | |
6076 | } | |
6077 | ||
a9cbf802 | 6078 | write_ptid (p, endp, nptid); |
74531fed PA |
6079 | } |
6080 | ||
6081 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6082 | come in asynchronously by notification. */ | |
6083 | putpkt (rs->buf); | |
6084 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6085 | if (strcmp (rs->buf, "OK") != 0) | |
6086 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6087 | } | |
6088 | ||
bfedc46a PA |
6089 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6090 | interrupt the remote target. It is undefined which thread of which | |
6091 | process reports the interrupt. */ | |
74531fed PA |
6092 | |
6093 | static void | |
de979965 | 6094 | remote_interrupt_as (void) |
74531fed PA |
6095 | { |
6096 | struct remote_state *rs = get_remote_state (); | |
6097 | ||
3a29589a DJ |
6098 | rs->ctrlc_pending_p = 1; |
6099 | ||
74531fed PA |
6100 | /* If the inferior is stopped already, but the core didn't know |
6101 | about it yet, just ignore the request. The cached wait status | |
6102 | will be collected in remote_wait. */ | |
6103 | if (rs->cached_wait_status) | |
6104 | return; | |
6105 | ||
9a7071a8 JB |
6106 | /* Send interrupt_sequence to remote target. */ |
6107 | send_interrupt_sequence (); | |
74531fed PA |
6108 | } |
6109 | ||
de979965 PA |
6110 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6111 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6112 | reports the interrupt. Throws an error if the packet is not |
6113 | supported by the server. */ | |
de979965 | 6114 | |
e42de8c7 | 6115 | static void |
de979965 PA |
6116 | remote_interrupt_ns (void) |
6117 | { | |
6118 | struct remote_state *rs = get_remote_state (); | |
6119 | char *p = rs->buf; | |
6120 | char *endp = rs->buf + get_remote_packet_size (); | |
6121 | ||
6122 | xsnprintf (p, endp - p, "vCtrlC"); | |
6123 | ||
6124 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6125 | come in asynchronously by notification. */ | |
6126 | putpkt (rs->buf); | |
6127 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6128 | ||
6129 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6130 | { | |
6131 | case PACKET_OK: | |
6132 | break; | |
6133 | case PACKET_UNKNOWN: | |
e42de8c7 | 6134 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6135 | case PACKET_ERROR: |
6136 | error (_("Interrupting target failed: %s"), rs->buf); | |
6137 | } | |
de979965 PA |
6138 | } |
6139 | ||
bfedc46a | 6140 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6141 | |
c906108c | 6142 | static void |
1eab8a48 | 6143 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 6144 | { |
7a292a7a | 6145 | if (remote_debug) |
0f71a2f6 | 6146 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6147 | |
6efcd9a8 | 6148 | if (target_is_non_stop_p ()) |
74531fed | 6149 | remote_stop_ns (ptid); |
c906108c | 6150 | else |
bfedc46a PA |
6151 | { |
6152 | /* We don't currently have a way to transparently pause the | |
6153 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6154 | remote_interrupt_as (); |
bfedc46a PA |
6155 | } |
6156 | } | |
6157 | ||
6158 | /* Implement the to_interrupt function for the remote targets. */ | |
6159 | ||
6160 | static void | |
e671cd59 | 6161 | remote_interrupt (struct target_ops *self) |
bfedc46a PA |
6162 | { |
6163 | if (remote_debug) | |
6164 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6165 | ||
e42de8c7 PA |
6166 | if (target_is_non_stop_p ()) |
6167 | remote_interrupt_ns (); | |
bfedc46a | 6168 | else |
e42de8c7 | 6169 | remote_interrupt_as (); |
c906108c SS |
6170 | } |
6171 | ||
93692b58 PA |
6172 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6173 | ||
6174 | static void | |
6175 | remote_pass_ctrlc (struct target_ops *self) | |
6176 | { | |
6177 | struct remote_state *rs = get_remote_state (); | |
6178 | ||
6179 | if (remote_debug) | |
6180 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6181 | ||
6182 | /* If we're starting up, we're not fully synced yet. Quit | |
6183 | immediately. */ | |
6184 | if (rs->starting_up) | |
6185 | quit (); | |
6186 | /* If ^C has already been sent once, offer to disconnect. */ | |
6187 | else if (rs->ctrlc_pending_p) | |
6188 | interrupt_query (); | |
6189 | else | |
e671cd59 | 6190 | target_interrupt (); |
93692b58 PA |
6191 | } |
6192 | ||
c906108c SS |
6193 | /* Ask the user what to do when an interrupt is received. */ |
6194 | ||
6195 | static void | |
fba45db2 | 6196 | interrupt_query (void) |
c906108c | 6197 | { |
abc56d60 | 6198 | struct remote_state *rs = get_remote_state (); |
c906108c | 6199 | |
abc56d60 | 6200 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6201 | { |
abc56d60 PA |
6202 | if (query (_("The target is not responding to interrupt requests.\n" |
6203 | "Stop debugging it? "))) | |
74531fed | 6204 | { |
78a095c3 | 6205 | remote_unpush_target (); |
abc56d60 | 6206 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6207 | } |
6208 | } | |
abc56d60 PA |
6209 | else |
6210 | { | |
6211 | if (query (_("Interrupted while waiting for the program.\n" | |
6212 | "Give up waiting? "))) | |
6213 | quit (); | |
6214 | } | |
c906108c SS |
6215 | } |
6216 | ||
6426a772 JM |
6217 | /* Enable/disable target terminal ownership. Most targets can use |
6218 | terminal groups to control terminal ownership. Remote targets are | |
6219 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6220 | is required. */ |
6426a772 JM |
6221 | |
6222 | static void | |
d2f640d4 | 6223 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 6224 | { |
6426a772 JM |
6225 | /* NOTE: At this point we could also register our selves as the |
6226 | recipient of all input. Any characters typed could then be | |
23860348 | 6227 | passed on down to the target. */ |
6426a772 JM |
6228 | } |
6229 | ||
6230 | static void | |
e3594fd1 | 6231 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 6232 | { |
6426a772 JM |
6233 | } |
6234 | ||
176a6961 | 6235 | static void |
917317f4 | 6236 | remote_console_output (char *msg) |
c906108c SS |
6237 | { |
6238 | char *p; | |
6239 | ||
c5aa993b | 6240 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6241 | { |
6242 | char tb[2]; | |
6243 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6244 | |
c906108c SS |
6245 | tb[0] = c; |
6246 | tb[1] = 0; | |
43ff13b4 | 6247 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6248 | } |
00db5b94 PA |
6249 | gdb_flush (gdb_stdtarg); |
6250 | } | |
74531fed | 6251 | |
74531fed PA |
6252 | DEF_VEC_O(cached_reg_t); |
6253 | ||
722247f1 | 6254 | typedef struct stop_reply |
74531fed | 6255 | { |
722247f1 | 6256 | struct notif_event base; |
74531fed | 6257 | |
722247f1 | 6258 | /* The identifier of the thread about this event */ |
74531fed PA |
6259 | ptid_t ptid; |
6260 | ||
340e3c99 | 6261 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6262 | connection, represented by a remote_state object, is closed, |
6263 | all the associated stop_reply events should be released. */ | |
6264 | struct remote_state *rs; | |
6265 | ||
74531fed PA |
6266 | struct target_waitstatus ws; |
6267 | ||
5cd63fda PA |
6268 | /* The architecture associated with the expedited registers. */ |
6269 | gdbarch *arch; | |
6270 | ||
15148d6a PA |
6271 | /* Expedited registers. This makes remote debugging a bit more |
6272 | efficient for those targets that provide critical registers as | |
6273 | part of their normal status mechanism (as another roundtrip to | |
6274 | fetch them is avoided). */ | |
74531fed PA |
6275 | VEC(cached_reg_t) *regcache; |
6276 | ||
f7e6eed5 PA |
6277 | enum target_stop_reason stop_reason; |
6278 | ||
74531fed PA |
6279 | CORE_ADDR watch_data_address; |
6280 | ||
dc146f7c | 6281 | int core; |
722247f1 | 6282 | } *stop_reply_p; |
a744cf53 | 6283 | |
722247f1 YQ |
6284 | DECLARE_QUEUE_P (stop_reply_p); |
6285 | DEFINE_QUEUE_P (stop_reply_p); | |
6286 | /* The list of already fetched and acknowledged stop events. This | |
6287 | queue is used for notification Stop, and other notifications | |
6288 | don't need queue for their events, because the notification events | |
6289 | of Stop can't be consumed immediately, so that events should be | |
6290 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6291 | time. Other notifications can consume their events immediately, | |
6292 | so queue is not needed for them. */ | |
6293 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6294 | |
6295 | static void | |
6296 | stop_reply_xfree (struct stop_reply *r) | |
6297 | { | |
f48ff2a7 | 6298 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6299 | } |
6300 | ||
221e1a37 PA |
6301 | /* Return the length of the stop reply queue. */ |
6302 | ||
6303 | static int | |
6304 | stop_reply_queue_length (void) | |
6305 | { | |
6306 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6307 | } | |
6308 | ||
722247f1 YQ |
6309 | static void |
6310 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6311 | struct notif_event *event) | |
6312 | { | |
6313 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6314 | } | |
6315 | ||
6316 | static void | |
6317 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6318 | struct notif_event *event) | |
6319 | { | |
6320 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6321 | ||
6322 | /* acknowledge */ | |
f5c4fcd9 | 6323 | putpkt (self->ack_command); |
722247f1 YQ |
6324 | |
6325 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6326 | /* We got an unknown stop reply. */ | |
6327 | error (_("Unknown stop reply")); | |
6328 | ||
6329 | push_stop_reply (stop_reply); | |
6330 | } | |
6331 | ||
6332 | static int | |
6333 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6334 | { | |
6335 | /* We can't get pending events in remote_notif_process for | |
6336 | notification stop, and we have to do this in remote_wait_ns | |
6337 | instead. If we fetch all queued events from stub, remote stub | |
6338 | may exit and we have no chance to process them back in | |
6339 | remote_wait_ns. */ | |
6340 | mark_async_event_handler (remote_async_inferior_event_token); | |
6341 | return 0; | |
6342 | } | |
6343 | ||
6344 | static void | |
6345 | stop_reply_dtr (struct notif_event *event) | |
6346 | { | |
6347 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6348 | cached_reg_t *reg; |
6349 | int ix; | |
6350 | ||
6351 | for (ix = 0; | |
6352 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6353 | ix++) | |
6354 | xfree (reg->data); | |
722247f1 YQ |
6355 | |
6356 | VEC_free (cached_reg_t, r->regcache); | |
6357 | } | |
6358 | ||
6359 | static struct notif_event * | |
6360 | remote_notif_stop_alloc_reply (void) | |
6361 | { | |
8d749320 SM |
6362 | /* We cast to a pointer to the "base class". */ |
6363 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6364 | |
6365 | r->dtr = stop_reply_dtr; | |
6366 | ||
6367 | return r; | |
6368 | } | |
6369 | ||
6370 | /* A client of notification Stop. */ | |
6371 | ||
6372 | struct notif_client notif_client_stop = | |
6373 | { | |
6374 | "Stop", | |
6375 | "vStopped", | |
6376 | remote_notif_stop_parse, | |
6377 | remote_notif_stop_ack, | |
6378 | remote_notif_stop_can_get_pending_events, | |
6379 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6380 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6381 | }; |
6382 | ||
6383 | /* A parameter to pass data in and out. */ | |
6384 | ||
6385 | struct queue_iter_param | |
6386 | { | |
6387 | void *input; | |
6388 | struct stop_reply *output; | |
6389 | }; | |
6390 | ||
85ad3aaf | 6391 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6392 | the pid of the process that owns the threads we want to check, or |
6393 | -1 if we want to check all threads. */ | |
6394 | ||
6395 | static int | |
6396 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6397 | ptid_t thread_ptid) | |
6398 | { | |
6399 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6400 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6401 | { | |
6402 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6403 | return 1; | |
6404 | } | |
6405 | ||
6406 | return 0; | |
6407 | } | |
6408 | ||
85ad3aaf PA |
6409 | /* Return the thread's pending status used to determine whether the |
6410 | thread is a fork parent stopped at a fork event. */ | |
6411 | ||
6412 | static struct target_waitstatus * | |
6413 | thread_pending_fork_status (struct thread_info *thread) | |
6414 | { | |
6415 | if (thread->suspend.waitstatus_pending_p) | |
6416 | return &thread->suspend.waitstatus; | |
6417 | else | |
6418 | return &thread->pending_follow; | |
6419 | } | |
6420 | ||
6421 | /* Determine if THREAD is a pending fork parent thread. */ | |
6422 | ||
6423 | static int | |
6424 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6425 | { | |
6426 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6427 | int pid = -1; | |
6428 | ||
6429 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6430 | } | |
6431 | ||
cbb8991c DB |
6432 | /* Check whether EVENT is a fork event, and if it is, remove the |
6433 | fork child from the context list passed in DATA. */ | |
6434 | ||
6435 | static int | |
6436 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6437 | QUEUE_ITER (stop_reply_p) *iter, | |
6438 | stop_reply_p event, | |
6439 | void *data) | |
6440 | { | |
19ba03f4 SM |
6441 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6442 | struct threads_listing_context *context | |
6443 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6444 | |
6445 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6446 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6447 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
21fe1c75 | 6448 | context->remove_thread (event->ws.value.related_pid); |
cbb8991c DB |
6449 | |
6450 | return 1; | |
6451 | } | |
6452 | ||
6453 | /* If CONTEXT contains any fork child threads that have not been | |
6454 | reported yet, remove them from the CONTEXT list. If such a | |
6455 | thread exists it is because we are stopped at a fork catchpoint | |
6456 | and have not yet called follow_fork, which will set up the | |
6457 | host-side data structures for the new process. */ | |
6458 | ||
6459 | static void | |
6460 | remove_new_fork_children (struct threads_listing_context *context) | |
6461 | { | |
6462 | struct thread_info * thread; | |
6463 | int pid = -1; | |
6464 | struct notif_client *notif = ¬if_client_stop; | |
6465 | struct queue_iter_param param; | |
6466 | ||
6467 | /* For any threads stopped at a fork event, remove the corresponding | |
6468 | fork child threads from the CONTEXT list. */ | |
6469 | ALL_NON_EXITED_THREADS (thread) | |
6470 | { | |
85ad3aaf | 6471 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6472 | |
6473 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 6474 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
6475 | } |
6476 | ||
6477 | /* Check for any pending fork events (not reported or processed yet) | |
6478 | in process PID and remove those fork child threads from the | |
6479 | CONTEXT list as well. */ | |
6480 | remote_notif_get_pending_events (notif); | |
6481 | param.input = context; | |
6482 | param.output = NULL; | |
6483 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6484 | remove_child_of_pending_fork, ¶m); | |
6485 | } | |
6486 | ||
85ad3aaf PA |
6487 | /* Check whether EVENT would prevent a global or process wildcard |
6488 | vCont action. */ | |
6489 | ||
6490 | static int | |
6491 | check_pending_event_prevents_wildcard_vcont_callback | |
6492 | (QUEUE (stop_reply_p) *q, | |
6493 | QUEUE_ITER (stop_reply_p) *iter, | |
6494 | stop_reply_p event, | |
6495 | void *data) | |
6496 | { | |
6497 | struct inferior *inf; | |
6498 | int *may_global_wildcard_vcont = (int *) data; | |
6499 | ||
6500 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6501 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6502 | return 1; | |
6503 | ||
6504 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6505 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6506 | *may_global_wildcard_vcont = 0; | |
6507 | ||
6508 | inf = find_inferior_ptid (event->ptid); | |
6509 | ||
6510 | /* This may be the first time we heard about this process. | |
6511 | Regardless, we must not do a global wildcard resume, otherwise | |
6512 | we'd resume this process too. */ | |
6513 | *may_global_wildcard_vcont = 0; | |
6514 | if (inf != NULL) | |
089354bb | 6515 | get_remote_inferior (inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6516 | |
6517 | return 1; | |
6518 | } | |
6519 | ||
6520 | /* Check whether any event pending in the vStopped queue would prevent | |
6521 | a global or process wildcard vCont action. Clear | |
6522 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6523 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6524 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6525 | ||
6526 | static void | |
6527 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6528 | { | |
6529 | struct notif_client *notif = ¬if_client_stop; | |
6530 | ||
6531 | remote_notif_get_pending_events (notif); | |
6532 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6533 | check_pending_event_prevents_wildcard_vcont_callback, | |
6534 | may_global_wildcard); | |
6535 | } | |
6536 | ||
f48ff2a7 YQ |
6537 | /* Remove stop replies in the queue if its pid is equal to the given |
6538 | inferior's pid. */ | |
722247f1 YQ |
6539 | |
6540 | static int | |
f48ff2a7 YQ |
6541 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6542 | QUEUE_ITER (stop_reply_p) *iter, | |
6543 | stop_reply_p event, | |
6544 | void *data) | |
722247f1 | 6545 | { |
19ba03f4 SM |
6546 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6547 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6548 | |
f48ff2a7 | 6549 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6550 | { |
6551 | stop_reply_xfree (event); | |
6552 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6553 | } | |
6554 | ||
6555 | return 1; | |
6556 | } | |
6557 | ||
f48ff2a7 | 6558 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6559 | |
74531fed | 6560 | static void |
5f4cf0bb | 6561 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6562 | { |
722247f1 | 6563 | struct queue_iter_param param; |
f48ff2a7 YQ |
6564 | struct stop_reply *reply; |
6565 | struct remote_state *rs = get_remote_state (); | |
6566 | struct remote_notif_state *rns = rs->notif_state; | |
6567 | ||
6568 | /* This function can be notified when an inferior exists. When the | |
6569 | target is not remote, the notification state is NULL. */ | |
6570 | if (rs->remote_desc == NULL) | |
6571 | return; | |
6572 | ||
6573 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6574 | |
74531fed | 6575 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6576 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6577 | { |
722247f1 | 6578 | stop_reply_xfree (reply); |
f48ff2a7 | 6579 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6580 | } |
c906108c | 6581 | |
722247f1 YQ |
6582 | param.input = inf; |
6583 | param.output = NULL; | |
74531fed PA |
6584 | /* Discard the stop replies we have already pulled with |
6585 | vStopped. */ | |
722247f1 | 6586 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6587 | remove_stop_reply_for_inferior, ¶m); |
6588 | } | |
6589 | ||
bcc75809 YQ |
6590 | /* If its remote state is equal to the given remote state, |
6591 | remove EVENT from the stop reply queue. */ | |
6592 | ||
6593 | static int | |
6594 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6595 | QUEUE_ITER (stop_reply_p) *iter, | |
6596 | stop_reply_p event, | |
6597 | void *data) | |
6598 | { | |
19ba03f4 SM |
6599 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6600 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6601 | |
6602 | if (event->rs == rs) | |
6603 | { | |
6604 | stop_reply_xfree (event); | |
6605 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6606 | } | |
6607 | ||
6608 | return 1; | |
6609 | } | |
6610 | ||
6611 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6612 | |
6613 | static void | |
bcc75809 | 6614 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6615 | { |
6616 | struct queue_iter_param param; | |
6617 | ||
bcc75809 | 6618 | param.input = rs; |
f48ff2a7 YQ |
6619 | param.output = NULL; |
6620 | /* Discard the stop replies we have already pulled with | |
6621 | vStopped. */ | |
6622 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6623 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6624 | } |
74531fed | 6625 | |
722247f1 YQ |
6626 | /* A parameter to pass data in and out. */ |
6627 | ||
6628 | static int | |
6629 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6630 | QUEUE_ITER (stop_reply_p) *iter, | |
6631 | stop_reply_p event, | |
6632 | void *data) | |
6633 | { | |
19ba03f4 SM |
6634 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6635 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6636 | |
6637 | if (ptid_match (event->ptid, *ptid)) | |
6638 | { | |
6639 | param->output = event; | |
6640 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6641 | return 0; | |
c8e38a49 | 6642 | } |
722247f1 YQ |
6643 | |
6644 | return 1; | |
74531fed | 6645 | } |
43ff13b4 | 6646 | |
722247f1 YQ |
6647 | /* Remove the first reply in 'stop_reply_queue' which matches |
6648 | PTID. */ | |
2e9f7625 | 6649 | |
722247f1 YQ |
6650 | static struct stop_reply * |
6651 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6652 | { |
722247f1 YQ |
6653 | struct queue_iter_param param; |
6654 | ||
6655 | param.input = &ptid; | |
6656 | param.output = NULL; | |
6657 | ||
6658 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6659 | remote_notif_remove_once_on_match, ¶m); | |
6660 | if (notif_debug) | |
6661 | fprintf_unfiltered (gdb_stdlog, | |
6662 | "notif: discard queued event: 'Stop' in %s\n", | |
6663 | target_pid_to_str (ptid)); | |
a744cf53 | 6664 | |
722247f1 | 6665 | return param.output; |
74531fed | 6666 | } |
75c99385 | 6667 | |
74531fed PA |
6668 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6669 | remove it from the queue, and return it. Returns NULL if none is | |
6670 | found. If there are still queued events left to process, tell the | |
6671 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6672 | |
74531fed PA |
6673 | static struct stop_reply * |
6674 | queued_stop_reply (ptid_t ptid) | |
6675 | { | |
722247f1 | 6676 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6677 | |
722247f1 | 6678 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6679 | /* There's still at least an event left. */ |
6680 | mark_async_event_handler (remote_async_inferior_event_token); | |
6681 | ||
722247f1 | 6682 | return r; |
74531fed PA |
6683 | } |
6684 | ||
6685 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6686 | know that we now have at least one queued event left to pass to the | |
6687 | core side, tell the event loop to get back to target_wait soon. */ | |
6688 | ||
6689 | static void | |
6690 | push_stop_reply (struct stop_reply *new_event) | |
6691 | { | |
722247f1 | 6692 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6693 | |
722247f1 YQ |
6694 | if (notif_debug) |
6695 | fprintf_unfiltered (gdb_stdlog, | |
6696 | "notif: push 'Stop' %s to queue %d\n", | |
6697 | target_pid_to_str (new_event->ptid), | |
6698 | QUEUE_length (stop_reply_p, | |
6699 | stop_reply_queue)); | |
74531fed PA |
6700 | |
6701 | mark_async_event_handler (remote_async_inferior_event_token); | |
6702 | } | |
6703 | ||
722247f1 YQ |
6704 | static int |
6705 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6706 | QUEUE_ITER (stop_reply_p) *iter, | |
6707 | struct stop_reply *event, | |
6708 | void *data) | |
6709 | { | |
19ba03f4 | 6710 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6711 | |
6712 | return !(ptid_equal (*ptid, event->ptid) | |
6713 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6714 | } | |
6715 | ||
74531fed PA |
6716 | /* Returns true if we have a stop reply for PTID. */ |
6717 | ||
6718 | static int | |
6719 | peek_stop_reply (ptid_t ptid) | |
6720 | { | |
722247f1 YQ |
6721 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6722 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6723 | } |
6724 | ||
26d56a93 SL |
6725 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6726 | starting with P and ending with PEND matches PREFIX. */ | |
6727 | ||
6728 | static int | |
6729 | strprefix (const char *p, const char *pend, const char *prefix) | |
6730 | { | |
6731 | for ( ; p < pend; p++, prefix++) | |
6732 | if (*p != *prefix) | |
6733 | return 0; | |
6734 | return *prefix == '\0'; | |
6735 | } | |
6736 | ||
74531fed PA |
6737 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6738 | result is stored in EVENT, or throws an error. */ | |
6739 | ||
6740 | static void | |
6741 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6742 | { | |
5cd63fda | 6743 | remote_arch_state *rsa = NULL; |
74531fed | 6744 | ULONGEST addr; |
256642e8 | 6745 | const char *p; |
94585166 | 6746 | int skipregs = 0; |
74531fed PA |
6747 | |
6748 | event->ptid = null_ptid; | |
bcc75809 | 6749 | event->rs = get_remote_state (); |
74531fed PA |
6750 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6751 | event->ws.value.integer = 0; | |
f7e6eed5 | 6752 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6753 | event->regcache = NULL; |
dc146f7c | 6754 | event->core = -1; |
74531fed PA |
6755 | |
6756 | switch (buf[0]) | |
6757 | { | |
6758 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6759 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6760 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6761 | ss = signal number | |
6762 | n... = register number | |
6763 | r... = register contents | |
6764 | */ | |
6765 | ||
6766 | p = &buf[3]; /* after Txx */ | |
6767 | while (*p) | |
6768 | { | |
256642e8 | 6769 | const char *p1; |
cea39f65 | 6770 | int fieldsize; |
43ff13b4 | 6771 | |
1f10ba14 PA |
6772 | p1 = strchr (p, ':'); |
6773 | if (p1 == NULL) | |
6774 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6775 | Packet: '%s'\n"), | |
6776 | p, buf); | |
6777 | if (p == p1) | |
6778 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6779 | Packet: '%s'\n"), | |
6780 | p, buf); | |
3c3bea1c | 6781 | |
1f10ba14 PA |
6782 | /* Some "registers" are actually extended stop information. |
6783 | Note if you're adding a new entry here: GDB 7.9 and | |
6784 | earlier assume that all register "numbers" that start | |
6785 | with an hex digit are real register numbers. Make sure | |
6786 | the server only sends such a packet if it knows the | |
6787 | client understands it. */ | |
c8e38a49 | 6788 | |
26d56a93 | 6789 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6790 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6791 | else if (strprefix (p, p1, "syscall_entry")) |
6792 | { | |
6793 | ULONGEST sysno; | |
6794 | ||
6795 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6796 | p = unpack_varlen_hex (++p1, &sysno); | |
6797 | event->ws.value.syscall_number = (int) sysno; | |
6798 | } | |
6799 | else if (strprefix (p, p1, "syscall_return")) | |
6800 | { | |
6801 | ULONGEST sysno; | |
6802 | ||
6803 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6804 | p = unpack_varlen_hex (++p1, &sysno); | |
6805 | event->ws.value.syscall_number = (int) sysno; | |
6806 | } | |
26d56a93 SL |
6807 | else if (strprefix (p, p1, "watch") |
6808 | || strprefix (p, p1, "rwatch") | |
6809 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6810 | { |
f7e6eed5 | 6811 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6812 | p = unpack_varlen_hex (++p1, &addr); |
6813 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6814 | } |
26d56a93 | 6815 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6816 | { |
6817 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6818 | ||
6819 | /* Make sure the stub doesn't forget to indicate support | |
6820 | with qSupported. */ | |
6821 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6822 | error (_("Unexpected swbreak stop reason")); | |
6823 | ||
6824 | /* The value part is documented as "must be empty", | |
6825 | though we ignore it, in case we ever decide to make | |
6826 | use of it in a backward compatible way. */ | |
8424cc97 | 6827 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6828 | } |
26d56a93 | 6829 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6830 | { |
6831 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6832 | ||
6833 | /* Make sure the stub doesn't forget to indicate support | |
6834 | with qSupported. */ | |
6835 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6836 | error (_("Unexpected hwbreak stop reason")); | |
6837 | ||
6838 | /* See above. */ | |
8424cc97 | 6839 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6840 | } |
26d56a93 | 6841 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6842 | { |
1f10ba14 | 6843 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 6844 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6845 | } |
26d56a93 | 6846 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6847 | { |
6848 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6849 | /* p1 will indicate "begin" or "end", but it makes | |
6850 | no difference for now, so ignore it. */ | |
8424cc97 | 6851 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6852 | } |
26d56a93 | 6853 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6854 | { |
6855 | ULONGEST c; | |
a744cf53 | 6856 | |
1f10ba14 PA |
6857 | p = unpack_varlen_hex (++p1, &c); |
6858 | event->core = c; | |
cea39f65 | 6859 | } |
26d56a93 | 6860 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6861 | { |
6862 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6863 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6864 | } | |
26d56a93 | 6865 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6866 | { |
6867 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6868 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6869 | } | |
26d56a93 | 6870 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6871 | { |
6872 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 6873 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 6874 | } |
6ab24463 | 6875 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6876 | { |
6877 | ULONGEST ignored; | |
6878 | char pathname[PATH_MAX]; | |
6879 | int pathlen; | |
6880 | ||
6881 | /* Determine the length of the execd pathname. */ | |
6882 | p = unpack_varlen_hex (++p1, &ignored); | |
6883 | pathlen = (p - p1) / 2; | |
6884 | ||
6885 | /* Save the pathname for event reporting and for | |
6886 | the next run command. */ | |
6887 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6888 | pathname[pathlen] = '\0'; | |
6889 | ||
6890 | /* This is freed during event handling. */ | |
6891 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6892 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6893 | ||
6894 | /* Skip the registers included in this packet, since | |
6895 | they may be for an architecture different from the | |
6896 | one used by the original program. */ | |
6897 | skipregs = 1; | |
6898 | } | |
65706a29 PA |
6899 | else if (strprefix (p, p1, "create")) |
6900 | { | |
6901 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 6902 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 6903 | } |
cea39f65 MS |
6904 | else |
6905 | { | |
1f10ba14 | 6906 | ULONGEST pnum; |
256642e8 | 6907 | const char *p_temp; |
1f10ba14 | 6908 | |
94585166 DB |
6909 | if (skipregs) |
6910 | { | |
8424cc97 | 6911 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
6912 | p++; |
6913 | continue; | |
6914 | } | |
6915 | ||
1f10ba14 PA |
6916 | /* Maybe a real ``P'' register number. */ |
6917 | p_temp = unpack_varlen_hex (p, &pnum); | |
6918 | /* If the first invalid character is the colon, we got a | |
6919 | register number. Otherwise, it's an unknown stop | |
6920 | reason. */ | |
6921 | if (p_temp == p1) | |
6922 | { | |
5cd63fda PA |
6923 | /* If we haven't parsed the event's thread yet, find |
6924 | it now, in order to find the architecture of the | |
6925 | reported expedited registers. */ | |
6926 | if (event->ptid == null_ptid) | |
6927 | { | |
6928 | const char *thr = strstr (p1 + 1, ";thread:"); | |
6929 | if (thr != NULL) | |
6930 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
6931 | NULL); | |
6932 | else | |
3cada740 PA |
6933 | { |
6934 | /* Either the current thread hasn't changed, | |
6935 | or the inferior is not multi-threaded. | |
6936 | The event must be for the thread we last | |
6937 | set as (or learned as being) current. */ | |
6938 | event->ptid = event->rs->general_thread; | |
6939 | } | |
5cd63fda PA |
6940 | } |
6941 | ||
6942 | if (rsa == NULL) | |
6943 | { | |
6944 | inferior *inf = (event->ptid == null_ptid | |
6945 | ? NULL | |
6946 | : find_inferior_ptid (event->ptid)); | |
6947 | /* If this is the first time we learn anything | |
6948 | about this process, skip the registers | |
6949 | included in this packet, since we don't yet | |
6950 | know which architecture to use to parse them. | |
6951 | We'll determine the architecture later when | |
6952 | we process the stop reply and retrieve the | |
6953 | target description, via | |
6954 | remote_notice_new_inferior -> | |
6955 | post_create_inferior. */ | |
6956 | if (inf == NULL) | |
6957 | { | |
6958 | p = strchrnul (p1 + 1, ';'); | |
6959 | p++; | |
6960 | continue; | |
6961 | } | |
6962 | ||
6963 | event->arch = inf->gdbarch; | |
6964 | rsa = get_remote_arch_state (event->arch); | |
6965 | } | |
6966 | ||
6967 | packet_reg *reg | |
6968 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 6969 | cached_reg_t cached_reg; |
43ff13b4 | 6970 | |
1f10ba14 PA |
6971 | if (reg == NULL) |
6972 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6973 | Packet: '%s'\n"), |
1f10ba14 | 6974 | hex_string (pnum), p, buf); |
c8e38a49 | 6975 | |
1f10ba14 | 6976 | cached_reg.num = reg->regnum; |
d1dff226 | 6977 | cached_reg.data = (gdb_byte *) |
5cd63fda | 6978 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 6979 | |
1f10ba14 PA |
6980 | p = p1 + 1; |
6981 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 6982 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 6983 | p += 2 * fieldsize; |
5cd63fda | 6984 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 6985 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 6986 | |
1f10ba14 PA |
6987 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6988 | } | |
6989 | else | |
6990 | { | |
6991 | /* Not a number. Silently skip unknown optional | |
6992 | info. */ | |
8424cc97 | 6993 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6994 | } |
cea39f65 | 6995 | } |
c8e38a49 | 6996 | |
cea39f65 MS |
6997 | if (*p != ';') |
6998 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6999 | buf, p); | |
7000 | ++p; | |
7001 | } | |
5b5596ff PA |
7002 | |
7003 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7004 | break; | |
7005 | ||
c8e38a49 PA |
7006 | /* fall through */ |
7007 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7008 | { |
7009 | int sig; | |
7010 | ||
7011 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7012 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7013 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7014 | event->ws.value.sig = (enum gdb_signal) sig; | |
7015 | else | |
7016 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7017 | } | |
c8e38a49 | 7018 | break; |
65706a29 PA |
7019 | case 'w': /* Thread exited. */ |
7020 | { | |
256642e8 | 7021 | const char *p; |
65706a29 PA |
7022 | ULONGEST value; |
7023 | ||
7024 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7025 | p = unpack_varlen_hex (&buf[1], &value); | |
7026 | event->ws.value.integer = value; | |
7027 | if (*p != ';') | |
7028 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7029 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7030 | break; |
7031 | } | |
c8e38a49 PA |
7032 | case 'W': /* Target exited. */ |
7033 | case 'X': | |
7034 | { | |
256642e8 | 7035 | const char *p; |
c8e38a49 PA |
7036 | int pid; |
7037 | ULONGEST value; | |
82f73884 | 7038 | |
c8e38a49 PA |
7039 | /* GDB used to accept only 2 hex chars here. Stubs should |
7040 | only send more if they detect GDB supports multi-process | |
7041 | support. */ | |
7042 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7043 | |
c8e38a49 PA |
7044 | if (buf[0] == 'W') |
7045 | { | |
7046 | /* The remote process exited. */ | |
74531fed PA |
7047 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7048 | event->ws.value.integer = value; | |
c8e38a49 PA |
7049 | } |
7050 | else | |
7051 | { | |
7052 | /* The remote process exited with a signal. */ | |
74531fed | 7053 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7054 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7055 | event->ws.value.sig = (enum gdb_signal) value; | |
7056 | else | |
7057 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7058 | } |
82f73884 | 7059 | |
c8e38a49 PA |
7060 | /* If no process is specified, assume inferior_ptid. */ |
7061 | pid = ptid_get_pid (inferior_ptid); | |
7062 | if (*p == '\0') | |
7063 | ; | |
7064 | else if (*p == ';') | |
7065 | { | |
7066 | p++; | |
7067 | ||
0b24eb2d | 7068 | if (*p == '\0') |
82f73884 | 7069 | ; |
61012eef | 7070 | else if (startswith (p, "process:")) |
82f73884 | 7071 | { |
c8e38a49 | 7072 | ULONGEST upid; |
a744cf53 | 7073 | |
c8e38a49 PA |
7074 | p += sizeof ("process:") - 1; |
7075 | unpack_varlen_hex (p, &upid); | |
7076 | pid = upid; | |
82f73884 PA |
7077 | } |
7078 | else | |
7079 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7080 | } |
c8e38a49 PA |
7081 | else |
7082 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7083 | event->ptid = pid_to_ptid (pid); |
7084 | } | |
7085 | break; | |
f2faf941 PA |
7086 | case 'N': |
7087 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7088 | event->ptid = minus_one_ptid; | |
7089 | break; | |
74531fed PA |
7090 | } |
7091 | ||
6efcd9a8 | 7092 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7093 | error (_("No process or thread specified in stop reply: %s"), buf); |
7094 | } | |
7095 | ||
722247f1 YQ |
7096 | /* When the stub wants to tell GDB about a new notification reply, it |
7097 | sends a notification (%Stop, for example). Those can come it at | |
7098 | any time, hence, we have to make sure that any pending | |
7099 | putpkt/getpkt sequence we're making is finished, before querying | |
7100 | the stub for more events with the corresponding ack command | |
7101 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7102 | immediately upon receiving the notification, something like this | |
7103 | could happen: | |
74531fed PA |
7104 | |
7105 | 1.1) --> Hg 1 | |
7106 | 1.2) <-- OK | |
7107 | 1.3) --> g | |
7108 | 1.4) <-- %Stop | |
7109 | 1.5) --> vStopped | |
7110 | 1.6) <-- (registers reply to step #1.3) | |
7111 | ||
7112 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7113 | query. | |
7114 | ||
796cb314 | 7115 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7116 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7117 | doing whatever we were doing: | |
7118 | ||
7119 | 2.1) --> Hg 1 | |
7120 | 2.2) <-- OK | |
7121 | 2.3) --> g | |
7122 | 2.4) <-- %Stop | |
7123 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7124 | 2.5) <-- (registers reply to step #2.3) | |
7125 | ||
7126 | Eventualy after step #2.5, we return to the event loop, which | |
7127 | notices there's an event on the | |
7128 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7129 | associated callback --- the function below. At this point, we're | |
7130 | always safe to start a vStopped sequence. : | |
7131 | ||
7132 | 2.6) --> vStopped | |
7133 | 2.7) <-- T05 thread:2 | |
7134 | 2.8) --> vStopped | |
7135 | 2.9) --> OK | |
7136 | */ | |
7137 | ||
722247f1 YQ |
7138 | void |
7139 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7140 | { |
7141 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7142 | |
f48ff2a7 | 7143 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7144 | { |
722247f1 YQ |
7145 | if (notif_debug) |
7146 | fprintf_unfiltered (gdb_stdlog, | |
7147 | "notif: process: '%s' ack pending event\n", | |
7148 | nc->name); | |
74531fed | 7149 | |
722247f1 | 7150 | /* acknowledge */ |
f48ff2a7 YQ |
7151 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7152 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7153 | |
7154 | while (1) | |
7155 | { | |
7156 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7157 | if (strcmp (rs->buf, "OK") == 0) | |
7158 | break; | |
7159 | else | |
722247f1 | 7160 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7161 | } |
7162 | } | |
722247f1 YQ |
7163 | else |
7164 | { | |
7165 | if (notif_debug) | |
7166 | fprintf_unfiltered (gdb_stdlog, | |
7167 | "notif: process: '%s' no pending reply\n", | |
7168 | nc->name); | |
7169 | } | |
74531fed PA |
7170 | } |
7171 | ||
74531fed PA |
7172 | /* Called when it is decided that STOP_REPLY holds the info of the |
7173 | event that is to be returned to the core. This function always | |
7174 | destroys STOP_REPLY. */ | |
7175 | ||
7176 | static ptid_t | |
7177 | process_stop_reply (struct stop_reply *stop_reply, | |
7178 | struct target_waitstatus *status) | |
7179 | { | |
7180 | ptid_t ptid; | |
7181 | ||
7182 | *status = stop_reply->ws; | |
7183 | ptid = stop_reply->ptid; | |
7184 | ||
7185 | /* If no thread/process was reported by the stub, assume the current | |
7186 | inferior. */ | |
7187 | if (ptid_equal (ptid, null_ptid)) | |
7188 | ptid = inferior_ptid; | |
7189 | ||
5f3563ea | 7190 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7191 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7192 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7193 | { |
5f3563ea PA |
7194 | /* Expedited registers. */ |
7195 | if (stop_reply->regcache) | |
7196 | { | |
217f1f79 | 7197 | struct regcache *regcache |
5cd63fda | 7198 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea PA |
7199 | cached_reg_t *reg; |
7200 | int ix; | |
7201 | ||
7202 | for (ix = 0; | |
d1dff226 | 7203 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7204 | ix++) |
d1dff226 | 7205 | { |
217f1f79 | 7206 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7207 | xfree (reg->data); |
7208 | } | |
7209 | ||
5f3563ea PA |
7210 | VEC_free (cached_reg_t, stop_reply->regcache); |
7211 | } | |
74531fed | 7212 | |
1941c569 | 7213 | remote_notice_new_inferior (ptid, 0); |
7aabaf9d | 7214 | remote_thread_info *remote_thr = get_remote_thread_info (ptid); |
799a2abe PA |
7215 | remote_thr->core = stop_reply->core; |
7216 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7217 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7218 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7219 | } |
7220 | ||
74531fed PA |
7221 | stop_reply_xfree (stop_reply); |
7222 | return ptid; | |
7223 | } | |
7224 | ||
7225 | /* The non-stop mode version of target_wait. */ | |
7226 | ||
7227 | static ptid_t | |
47608cb1 | 7228 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7229 | { |
7230 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7231 | struct stop_reply *stop_reply; |
7232 | int ret; | |
fee9eda9 | 7233 | int is_notif = 0; |
74531fed PA |
7234 | |
7235 | /* If in non-stop mode, get out of getpkt even if a | |
7236 | notification is received. */ | |
7237 | ||
7238 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7239 | 0 /* forever */, &is_notif); |
74531fed PA |
7240 | while (1) |
7241 | { | |
fee9eda9 | 7242 | if (ret != -1 && !is_notif) |
74531fed PA |
7243 | switch (rs->buf[0]) |
7244 | { | |
7245 | case 'E': /* Error of some sort. */ | |
7246 | /* We're out of sync with the target now. Did it continue | |
7247 | or not? We can't tell which thread it was in non-stop, | |
7248 | so just ignore this. */ | |
7249 | warning (_("Remote failure reply: %s"), rs->buf); | |
7250 | break; | |
7251 | case 'O': /* Console output. */ | |
7252 | remote_console_output (rs->buf + 1); | |
7253 | break; | |
7254 | default: | |
7255 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7256 | break; | |
7257 | } | |
7258 | ||
7259 | /* Acknowledge a pending stop reply that may have arrived in the | |
7260 | mean time. */ | |
f48ff2a7 | 7261 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7262 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7263 | |
7264 | /* If indeed we noticed a stop reply, we're done. */ | |
7265 | stop_reply = queued_stop_reply (ptid); | |
7266 | if (stop_reply != NULL) | |
7267 | return process_stop_reply (stop_reply, status); | |
7268 | ||
47608cb1 | 7269 | /* Still no event. If we're just polling for an event, then |
74531fed | 7270 | return to the event loop. */ |
47608cb1 | 7271 | if (options & TARGET_WNOHANG) |
74531fed PA |
7272 | { |
7273 | status->kind = TARGET_WAITKIND_IGNORE; | |
7274 | return minus_one_ptid; | |
7275 | } | |
7276 | ||
47608cb1 | 7277 | /* Otherwise do a blocking wait. */ |
74531fed | 7278 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7279 | 1 /* forever */, &is_notif); |
74531fed PA |
7280 | } |
7281 | } | |
7282 | ||
7283 | /* Wait until the remote machine stops, then return, storing status in | |
7284 | STATUS just as `wait' would. */ | |
7285 | ||
7286 | static ptid_t | |
47608cb1 | 7287 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7288 | { |
7289 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7290 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7291 | char *buf; |
74531fed PA |
7292 | struct stop_reply *stop_reply; |
7293 | ||
47608cb1 PA |
7294 | again: |
7295 | ||
74531fed PA |
7296 | status->kind = TARGET_WAITKIND_IGNORE; |
7297 | status->value.integer = 0; | |
7298 | ||
7299 | stop_reply = queued_stop_reply (ptid); | |
7300 | if (stop_reply != NULL) | |
7301 | return process_stop_reply (stop_reply, status); | |
7302 | ||
7303 | if (rs->cached_wait_status) | |
7304 | /* Use the cached wait status, but only once. */ | |
7305 | rs->cached_wait_status = 0; | |
7306 | else | |
7307 | { | |
7308 | int ret; | |
722247f1 | 7309 | int is_notif; |
567420d1 PA |
7310 | int forever = ((options & TARGET_WNOHANG) == 0 |
7311 | && wait_forever_enabled_p); | |
7312 | ||
7313 | if (!rs->waiting_for_stop_reply) | |
7314 | { | |
7315 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7316 | return minus_one_ptid; | |
7317 | } | |
74531fed | 7318 | |
74531fed PA |
7319 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7320 | _never_ wait for ever -> test on target_is_async_p(). | |
7321 | However, before we do that we need to ensure that the caller | |
7322 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7323 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7324 | forever, &is_notif); |
722247f1 YQ |
7325 | |
7326 | /* GDB gets a notification. Return to core as this event is | |
7327 | not interesting. */ | |
7328 | if (ret != -1 && is_notif) | |
7329 | return minus_one_ptid; | |
567420d1 PA |
7330 | |
7331 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7332 | return minus_one_ptid; | |
74531fed PA |
7333 | } |
7334 | ||
7335 | buf = rs->buf; | |
7336 | ||
3a29589a DJ |
7337 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7338 | an 'F' or 'O' packet. */ | |
7339 | if (buf[0] != 'F' && buf[0] != 'O') | |
7340 | rs->ctrlc_pending_p = 0; | |
7341 | ||
74531fed PA |
7342 | switch (buf[0]) |
7343 | { | |
7344 | case 'E': /* Error of some sort. */ | |
7345 | /* We're out of sync with the target now. Did it continue or | |
7346 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7347 | rs->waiting_for_stop_reply = 0; |
7348 | ||
74531fed PA |
7349 | warning (_("Remote failure reply: %s"), buf); |
7350 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7351 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7352 | break; |
7353 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7354 | /* GDB may access the inferior memory while handling the File-I/O |
7355 | request, but we don't want GDB accessing memory while waiting | |
7356 | for a stop reply. See the comments in putpkt_binary. Set | |
7357 | waiting_for_stop_reply to 0 temporarily. */ | |
7358 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7359 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7360 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7361 | /* GDB handled the File-I/O request, and the target is running |
7362 | again. Keep waiting for events. */ | |
7363 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7364 | break; |
f2faf941 | 7365 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7366 | { |
29090fb6 LM |
7367 | struct stop_reply *stop_reply; |
7368 | ||
7369 | /* There is a stop reply to handle. */ | |
7370 | rs->waiting_for_stop_reply = 0; | |
7371 | ||
7372 | stop_reply | |
722247f1 YQ |
7373 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7374 | rs->buf); | |
74531fed | 7375 | |
74531fed | 7376 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7377 | break; |
7378 | } | |
7379 | case 'O': /* Console output. */ | |
7380 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7381 | break; |
7382 | case '\0': | |
b73be471 | 7383 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7384 | { |
7385 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7386 | remote system doesn't support it. */ | |
223ffa71 | 7387 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7388 | printf_filtered |
7389 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7390 | gdb_signal_to_name (rs->last_sent_signal)); |
7391 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7392 | target_terminal::inferior (); |
c8e38a49 | 7393 | |
f5c4fcd9 TT |
7394 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7395 | putpkt (buf); | |
c8e38a49 | 7396 | break; |
43ff13b4 | 7397 | } |
c8e38a49 PA |
7398 | /* else fallthrough */ |
7399 | default: | |
7400 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7401 | break; |
43ff13b4 | 7402 | } |
c8e38a49 | 7403 | |
f2faf941 PA |
7404 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7405 | return minus_one_ptid; | |
7406 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7407 | { |
7408 | /* Nothing interesting happened. If we're doing a non-blocking | |
7409 | poll, we're done. Otherwise, go back to waiting. */ | |
7410 | if (options & TARGET_WNOHANG) | |
7411 | return minus_one_ptid; | |
7412 | else | |
7413 | goto again; | |
7414 | } | |
74531fed PA |
7415 | else if (status->kind != TARGET_WAITKIND_EXITED |
7416 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7417 | { |
7418 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7419 | record_currthread (rs, event_ptid); |
82f73884 PA |
7420 | else |
7421 | event_ptid = inferior_ptid; | |
43ff13b4 | 7422 | } |
74531fed PA |
7423 | else |
7424 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7425 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7426 | |
82f73884 | 7427 | return event_ptid; |
43ff13b4 JM |
7428 | } |
7429 | ||
74531fed PA |
7430 | /* Wait until the remote machine stops, then return, storing status in |
7431 | STATUS just as `wait' would. */ | |
7432 | ||
c8e38a49 | 7433 | static ptid_t |
117de6a9 | 7434 | remote_wait (struct target_ops *ops, |
47608cb1 | 7435 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7436 | { |
7437 | ptid_t event_ptid; | |
7438 | ||
6efcd9a8 | 7439 | if (target_is_non_stop_p ()) |
47608cb1 | 7440 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7441 | else |
47608cb1 | 7442 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7443 | |
d9d41e78 | 7444 | if (target_is_async_p ()) |
c8e38a49 | 7445 | { |
74531fed PA |
7446 | /* If there are are events left in the queue tell the event loop |
7447 | to return here. */ | |
722247f1 | 7448 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7449 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7450 | } |
c8e38a49 PA |
7451 | |
7452 | return event_ptid; | |
7453 | } | |
7454 | ||
74ca34ce | 7455 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7456 | |
b96ec7ac | 7457 | static int |
56be3814 | 7458 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7459 | { |
ac7936df | 7460 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7461 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7462 | char *buf, *p; |
9890e433 | 7463 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7464 | int i; |
7465 | ||
4082afcc | 7466 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7467 | return 0; |
7468 | ||
7469 | if (reg->pnum == -1) | |
7470 | return 0; | |
7471 | ||
2e9f7625 | 7472 | p = rs->buf; |
fcad0fa4 | 7473 | *p++ = 'p'; |
74ca34ce | 7474 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7475 | *p++ = '\0'; |
1f4437a4 MS |
7476 | putpkt (rs->buf); |
7477 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7478 | |
2e9f7625 DJ |
7479 | buf = rs->buf; |
7480 | ||
74ca34ce DJ |
7481 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7482 | { | |
7483 | case PACKET_OK: | |
7484 | break; | |
7485 | case PACKET_UNKNOWN: | |
7486 | return 0; | |
7487 | case PACKET_ERROR: | |
27a9c0bf | 7488 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7489 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7490 | reg->regnum), |
7491 | buf); | |
74ca34ce | 7492 | } |
3f9a994c JB |
7493 | |
7494 | /* If this register is unfetchable, tell the regcache. */ | |
7495 | if (buf[0] == 'x') | |
8480adf2 | 7496 | { |
56be3814 | 7497 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7498 | return 1; |
b96ec7ac | 7499 | } |
b96ec7ac | 7500 | |
3f9a994c JB |
7501 | /* Otherwise, parse and supply the value. */ |
7502 | p = buf; | |
7503 | i = 0; | |
7504 | while (p[0] != 0) | |
7505 | { | |
7506 | if (p[1] == 0) | |
74ca34ce | 7507 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7508 | |
7509 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7510 | p += 2; | |
7511 | } | |
56be3814 | 7512 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7513 | return 1; |
b96ec7ac AC |
7514 | } |
7515 | ||
74ca34ce DJ |
7516 | /* Fetch the registers included in the target's 'g' packet. */ |
7517 | ||
29709017 DJ |
7518 | static int |
7519 | send_g_packet (void) | |
c906108c | 7520 | { |
d01949b6 | 7521 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7522 | int buf_len; |
c906108c | 7523 | |
bba74b36 | 7524 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
b75abf5b AK |
7525 | putpkt (rs->buf); |
7526 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7527 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
7528 | error (_("Could not read registers; remote failure reply '%s'"), | |
7529 | rs->buf); | |
c906108c | 7530 | |
29709017 DJ |
7531 | /* We can get out of synch in various cases. If the first character |
7532 | in the buffer is not a hex character, assume that has happened | |
7533 | and try to fetch another packet to read. */ | |
7534 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7535 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7536 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7537 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7538 | { | |
7539 | if (remote_debug) | |
7540 | fprintf_unfiltered (gdb_stdlog, | |
7541 | "Bad register packet; fetching a new packet\n"); | |
7542 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7543 | } | |
7544 | ||
74ca34ce DJ |
7545 | buf_len = strlen (rs->buf); |
7546 | ||
7547 | /* Sanity check the received packet. */ | |
7548 | if (buf_len % 2 != 0) | |
7549 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7550 | |
7551 | return buf_len / 2; | |
7552 | } | |
7553 | ||
7554 | static void | |
56be3814 | 7555 | process_g_packet (struct regcache *regcache) |
29709017 | 7556 | { |
ac7936df | 7557 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 7558 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 7559 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); |
29709017 DJ |
7560 | int i, buf_len; |
7561 | char *p; | |
7562 | char *regs; | |
7563 | ||
7564 | buf_len = strlen (rs->buf); | |
7565 | ||
7566 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 7567 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 SM |
7568 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
7569 | "bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf); | |
74ca34ce DJ |
7570 | |
7571 | /* Save the size of the packet sent to us by the target. It is used | |
7572 | as a heuristic when determining the max size of packets that the | |
7573 | target can safely receive. */ | |
7574 | if (rsa->actual_register_packet_size == 0) | |
7575 | rsa->actual_register_packet_size = buf_len; | |
7576 | ||
7577 | /* If this is smaller than we guessed the 'g' packet would be, | |
7578 | update our records. A 'g' reply that doesn't include a register's | |
7579 | value implies either that the register is not available, or that | |
7580 | the 'p' packet must be used. */ | |
7581 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7582 | { |
9dc193c3 | 7583 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7584 | |
4a22f64d | 7585 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7586 | { |
9dc193c3 LF |
7587 | long offset = rsa->regs[i].offset; |
7588 | long reg_size = register_size (gdbarch, i); | |
7589 | ||
74ca34ce DJ |
7590 | if (rsa->regs[i].pnum == -1) |
7591 | continue; | |
7592 | ||
9dc193c3 | 7593 | if (offset >= sizeof_g_packet) |
74ca34ce | 7594 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7595 | else if (offset + reg_size > sizeof_g_packet) |
7596 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7597 | else |
74ca34ce | 7598 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7599 | } |
9dc193c3 LF |
7600 | |
7601 | /* Looks valid enough, we can assume this is the correct length | |
7602 | for a 'g' packet. It's important not to adjust | |
7603 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7604 | this "if" won't be run the next time the method is called | |
7605 | with a packet of the same size and one of the internal errors | |
7606 | below will trigger instead. */ | |
7607 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7608 | } |
b323314b | 7609 | |
224c3ddb | 7610 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7611 | |
7612 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7613 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7614 | |
c906108c SS |
7615 | /* Reply describes registers byte by byte, each byte encoded as two |
7616 | hex characters. Suck them all up, then supply them to the | |
7617 | register cacheing/storage mechanism. */ | |
7618 | ||
74ca34ce | 7619 | p = rs->buf; |
ea9c271d | 7620 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7621 | { |
74ca34ce DJ |
7622 | if (p[0] == 0 || p[1] == 0) |
7623 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7624 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7625 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7626 | |
c906108c | 7627 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7628 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7629 | else |
7630 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7631 | p += 2; | |
7632 | } | |
7633 | ||
a744cf53 MS |
7634 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7635 | { | |
7636 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7637 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7638 | |
7639 | if (r->in_g_packet) | |
7640 | { | |
9dc193c3 | 7641 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7642 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7643 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7644 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7645 | else if (rs->buf[r->offset * 2] == 'x') |
7646 | { | |
7647 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7648 | /* The register isn't available, mark it as such (at | |
7649 | the same time setting the value to zero). */ | |
7650 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7651 | } | |
7652 | else | |
7653 | regcache_raw_supply (regcache, r->regnum, | |
7654 | regs + r->offset); | |
7655 | } | |
7656 | } | |
c906108c SS |
7657 | } |
7658 | ||
29709017 | 7659 | static void |
56be3814 | 7660 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7661 | { |
7662 | send_g_packet (); | |
56be3814 | 7663 | process_g_packet (regcache); |
29709017 DJ |
7664 | } |
7665 | ||
e6e4e701 PA |
7666 | /* Make the remote selected traceframe match GDB's selected |
7667 | traceframe. */ | |
7668 | ||
7669 | static void | |
7670 | set_remote_traceframe (void) | |
7671 | { | |
7672 | int newnum; | |
262e1174 | 7673 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7674 | |
262e1174 | 7675 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7676 | return; |
7677 | ||
7678 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7679 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7680 | |
7681 | newnum = target_trace_find (tfind_number, | |
7682 | get_traceframe_number (), 0, 0, NULL); | |
7683 | ||
7684 | /* Should not happen. If it does, all bets are off. */ | |
7685 | if (newnum != get_traceframe_number ()) | |
7686 | warning (_("could not set remote traceframe")); | |
7687 | } | |
7688 | ||
74ca34ce | 7689 | static void |
28439f5e PA |
7690 | remote_fetch_registers (struct target_ops *ops, |
7691 | struct regcache *regcache, int regnum) | |
74ca34ce | 7692 | { |
ac7936df | 7693 | struct gdbarch *gdbarch = regcache->arch (); |
5cd63fda | 7694 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); |
74ca34ce DJ |
7695 | int i; |
7696 | ||
e6e4e701 | 7697 | set_remote_traceframe (); |
bcc0c096 | 7698 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7699 | |
7700 | if (regnum >= 0) | |
7701 | { | |
5cd63fda | 7702 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 7703 | |
74ca34ce DJ |
7704 | gdb_assert (reg != NULL); |
7705 | ||
7706 | /* If this register might be in the 'g' packet, try that first - | |
7707 | we are likely to read more than one register. If this is the | |
7708 | first 'g' packet, we might be overly optimistic about its | |
7709 | contents, so fall back to 'p'. */ | |
7710 | if (reg->in_g_packet) | |
7711 | { | |
56be3814 | 7712 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7713 | if (reg->in_g_packet) |
7714 | return; | |
7715 | } | |
7716 | ||
56be3814 | 7717 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7718 | return; |
7719 | ||
7720 | /* This register is not available. */ | |
56be3814 | 7721 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7722 | |
7723 | return; | |
7724 | } | |
7725 | ||
56be3814 | 7726 | fetch_registers_using_g (regcache); |
74ca34ce | 7727 | |
5cd63fda | 7728 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 7729 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7730 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7731 | { |
7732 | /* This register is not available. */ | |
56be3814 | 7733 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7734 | } |
7735 | } | |
7736 | ||
c906108c SS |
7737 | /* Prepare to store registers. Since we may send them all (using a |
7738 | 'G' request), we have to read out the ones we don't want to change | |
7739 | first. */ | |
7740 | ||
c5aa993b | 7741 | static void |
f32dbf8c | 7742 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7743 | { |
5cd63fda | 7744 | remote_arch_state *rsa = get_remote_arch_state (regcache->arch ()); |
cf0e1e0d | 7745 | int i; |
cf0e1e0d | 7746 | |
c906108c | 7747 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7748 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7749 | { |
7750 | case PACKET_DISABLE: | |
7751 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7752 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 7753 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 7754 | if (rsa->regs[i].in_g_packet) |
8e368124 | 7755 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
7756 | break; |
7757 | case PACKET_ENABLE: | |
7758 | break; | |
7759 | } | |
7760 | } | |
7761 | ||
ad10f812 | 7762 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7763 | packet was not recognized. */ |
5a2468f5 JM |
7764 | |
7765 | static int | |
1f4437a4 MS |
7766 | store_register_using_P (const struct regcache *regcache, |
7767 | struct packet_reg *reg) | |
5a2468f5 | 7768 | { |
ac7936df | 7769 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 7770 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7771 | /* Try storing a single register. */ |
6d820c5c | 7772 | char *buf = rs->buf; |
9890e433 | 7773 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 7774 | char *p; |
5a2468f5 | 7775 | |
4082afcc | 7776 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7777 | return 0; |
7778 | ||
7779 | if (reg->pnum == -1) | |
7780 | return 0; | |
7781 | ||
ea9c271d | 7782 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7783 | p = buf + strlen (buf); |
56be3814 | 7784 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7785 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7786 | putpkt (rs->buf); |
7787 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7788 | |
74ca34ce DJ |
7789 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7790 | { | |
7791 | case PACKET_OK: | |
7792 | return 1; | |
7793 | case PACKET_ERROR: | |
27a9c0bf MS |
7794 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7795 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7796 | case PACKET_UNKNOWN: |
7797 | return 0; | |
7798 | default: | |
7799 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7800 | } | |
c906108c SS |
7801 | } |
7802 | ||
23860348 MS |
7803 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7804 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7805 | |
7806 | static void | |
56be3814 | 7807 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7808 | { |
d01949b6 | 7809 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 7810 | remote_arch_state *rsa = get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 7811 | gdb_byte *regs; |
c906108c SS |
7812 | char *p; |
7813 | ||
193cb69f AC |
7814 | /* Extract all the registers in the regcache copying them into a |
7815 | local buffer. */ | |
7816 | { | |
b323314b | 7817 | int i; |
a744cf53 | 7818 | |
224c3ddb | 7819 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7820 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 7821 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 7822 | { |
ea9c271d | 7823 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7824 | |
b323314b | 7825 | if (r->in_g_packet) |
56be3814 | 7826 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7827 | } |
7828 | } | |
c906108c SS |
7829 | |
7830 | /* Command describes registers byte by byte, | |
7831 | each byte encoded as two hex characters. */ | |
6d820c5c | 7832 | p = rs->buf; |
193cb69f | 7833 | *p++ = 'G'; |
74ca34ce | 7834 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
7835 | putpkt (rs->buf); |
7836 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7837 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7838 | error (_("Could not write registers; remote failure reply '%s'"), |
7839 | rs->buf); | |
c906108c | 7840 | } |
74ca34ce DJ |
7841 | |
7842 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7843 | of the register cache buffer. FIXME: ignores errors. */ | |
7844 | ||
7845 | static void | |
28439f5e PA |
7846 | remote_store_registers (struct target_ops *ops, |
7847 | struct regcache *regcache, int regnum) | |
74ca34ce | 7848 | { |
5cd63fda PA |
7849 | struct gdbarch *gdbarch = regcache->arch (); |
7850 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
7851 | int i; |
7852 | ||
e6e4e701 | 7853 | set_remote_traceframe (); |
bcc0c096 | 7854 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7855 | |
7856 | if (regnum >= 0) | |
7857 | { | |
5cd63fda | 7858 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 7859 | |
74ca34ce DJ |
7860 | gdb_assert (reg != NULL); |
7861 | ||
7862 | /* Always prefer to store registers using the 'P' packet if | |
7863 | possible; we often change only a small number of registers. | |
7864 | Sometimes we change a larger number; we'd need help from a | |
7865 | higher layer to know to use 'G'. */ | |
56be3814 | 7866 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7867 | return; |
7868 | ||
7869 | /* For now, don't complain if we have no way to write the | |
7870 | register. GDB loses track of unavailable registers too | |
7871 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7872 | any way to read the register, either... */ |
74ca34ce DJ |
7873 | if (!reg->in_g_packet) |
7874 | return; | |
7875 | ||
56be3814 | 7876 | store_registers_using_G (regcache); |
74ca34ce DJ |
7877 | return; |
7878 | } | |
7879 | ||
56be3814 | 7880 | store_registers_using_G (regcache); |
74ca34ce | 7881 | |
5cd63fda | 7882 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 7883 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7884 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7885 | /* See above for why we do not issue an error here. */ |
7886 | continue; | |
7887 | } | |
c906108c SS |
7888 | \f |
7889 | ||
7890 | /* Return the number of hex digits in num. */ | |
7891 | ||
7892 | static int | |
fba45db2 | 7893 | hexnumlen (ULONGEST num) |
c906108c SS |
7894 | { |
7895 | int i; | |
7896 | ||
7897 | for (i = 0; num != 0; i++) | |
7898 | num >>= 4; | |
7899 | ||
325fac50 | 7900 | return std::max (i, 1); |
c906108c SS |
7901 | } |
7902 | ||
2df3850c | 7903 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7904 | |
7905 | static int | |
fba45db2 | 7906 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7907 | { |
c906108c | 7908 | int len = hexnumlen (num); |
a744cf53 | 7909 | |
2df3850c JM |
7910 | return hexnumnstr (buf, num, len); |
7911 | } | |
7912 | ||
c906108c | 7913 | |
2df3850c | 7914 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7915 | |
2df3850c | 7916 | static int |
fba45db2 | 7917 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7918 | { |
7919 | int i; | |
7920 | ||
7921 | buf[width] = '\0'; | |
7922 | ||
7923 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7924 | { |
c5aa993b | 7925 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7926 | num >>= 4; |
7927 | } | |
7928 | ||
2df3850c | 7929 | return width; |
c906108c SS |
7930 | } |
7931 | ||
23860348 | 7932 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7933 | |
7934 | static CORE_ADDR | |
fba45db2 | 7935 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7936 | { |
883b9c6c | 7937 | unsigned int address_size = remote_address_size; |
a744cf53 | 7938 | |
911c95a5 UW |
7939 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7940 | if (!address_size) | |
f5656ead | 7941 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7942 | |
7943 | if (address_size > 0 | |
7944 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7945 | { |
7946 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7947 | in a ULONGEST variable. */ |
c906108c | 7948 | ULONGEST mask = 1; |
a744cf53 | 7949 | |
911c95a5 | 7950 | mask = (mask << address_size) - 1; |
c906108c SS |
7951 | addr &= mask; |
7952 | } | |
7953 | return addr; | |
7954 | } | |
7955 | ||
7956 | /* Determine whether the remote target supports binary downloading. | |
7957 | This is accomplished by sending a no-op memory write of zero length | |
7958 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7959 | the whole packet, since many stubs strip the eighth bit and |
7960 | subsequently compute a wrong checksum, which causes real havoc with | |
7961 | remote_write_bytes. | |
7a292a7a | 7962 | |
96baa820 | 7963 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7964 | clean. In cases like this, the user should clear "remote |
23860348 | 7965 | X-packet". */ |
96baa820 | 7966 | |
c906108c | 7967 | static void |
fba45db2 | 7968 | check_binary_download (CORE_ADDR addr) |
c906108c | 7969 | { |
d01949b6 | 7970 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7971 | |
4082afcc | 7972 | switch (packet_support (PACKET_X)) |
c906108c | 7973 | { |
96baa820 JM |
7974 | case PACKET_DISABLE: |
7975 | break; | |
7976 | case PACKET_ENABLE: | |
7977 | break; | |
7978 | case PACKET_SUPPORT_UNKNOWN: | |
7979 | { | |
96baa820 | 7980 | char *p; |
802188a7 | 7981 | |
2e9f7625 | 7982 | p = rs->buf; |
96baa820 JM |
7983 | *p++ = 'X'; |
7984 | p += hexnumstr (p, (ULONGEST) addr); | |
7985 | *p++ = ','; | |
7986 | p += hexnumstr (p, (ULONGEST) 0); | |
7987 | *p++ = ':'; | |
7988 | *p = '\0'; | |
802188a7 | 7989 | |
2e9f7625 | 7990 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7991 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7992 | |
2e9f7625 | 7993 | if (rs->buf[0] == '\0') |
96baa820 JM |
7994 | { |
7995 | if (remote_debug) | |
7996 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7997 | "binary downloading NOT " |
7998 | "supported by target\n"); | |
444abaca | 7999 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8000 | } |
8001 | else | |
8002 | { | |
8003 | if (remote_debug) | |
8004 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8005 | "binary downloading supported by target\n"); |
444abaca | 8006 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8007 | } |
8008 | break; | |
8009 | } | |
c906108c SS |
8010 | } |
8011 | } | |
8012 | ||
124e13d9 SM |
8013 | /* Helper function to resize the payload in order to try to get a good |
8014 | alignment. We try to write an amount of data such that the next write will | |
8015 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8016 | ||
8017 | static int | |
8018 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8019 | { | |
8020 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8021 | } | |
8022 | ||
c906108c SS |
8023 | /* Write memory data directly to the remote machine. |
8024 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8025 | HEADER is the starting part of the packet. |
c906108c SS |
8026 | MEMADDR is the address in the remote memory space. |
8027 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8028 | LEN_UNITS is the number of addressable units to write. |
8029 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8030 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8031 | should send data as binary ('X'), or hex-encoded ('M'). | |
8032 | ||
8033 | The function creates packet of the form | |
8034 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8035 | ||
124e13d9 | 8036 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8037 | |
8038 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8039 | are omitted. | |
8040 | ||
9b409511 | 8041 | Return the transferred status, error or OK (an |
124e13d9 SM |
8042 | 'enum target_xfer_status' value). Save the number of addressable units |
8043 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8044 | ||
8045 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8046 | exchange between gdb and the stub could look like (?? in place of the | |
8047 | checksum): | |
8048 | ||
8049 | -> $m1000,4#?? | |
8050 | <- aaaabbbbccccdddd | |
8051 | ||
8052 | -> $M1000,3:eeeeffffeeee#?? | |
8053 | <- OK | |
8054 | ||
8055 | -> $m1000,4#?? | |
8056 | <- eeeeffffeeeedddd */ | |
c906108c | 8057 | |
9b409511 | 8058 | static enum target_xfer_status |
a76d924d | 8059 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8060 | const gdb_byte *myaddr, ULONGEST len_units, |
8061 | int unit_size, ULONGEST *xfered_len_units, | |
8062 | char packet_format, int use_length) | |
c906108c | 8063 | { |
6d820c5c | 8064 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8065 | char *p; |
a76d924d DJ |
8066 | char *plen = NULL; |
8067 | int plenlen = 0; | |
124e13d9 SM |
8068 | int todo_units; |
8069 | int units_written; | |
8070 | int payload_capacity_bytes; | |
8071 | int payload_length_bytes; | |
a76d924d DJ |
8072 | |
8073 | if (packet_format != 'X' && packet_format != 'M') | |
8074 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8075 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8076 | |
124e13d9 | 8077 | if (len_units == 0) |
9b409511 | 8078 | return TARGET_XFER_EOF; |
b2182ed2 | 8079 | |
124e13d9 | 8080 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8081 | |
6d820c5c DJ |
8082 | /* The packet buffer will be large enough for the payload; |
8083 | get_memory_packet_size ensures this. */ | |
a76d924d | 8084 | rs->buf[0] = '\0'; |
c906108c | 8085 | |
a257b5bb | 8086 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8087 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8088 | ||
124e13d9 | 8089 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8090 | if (!use_length) |
0df8b418 | 8091 | /* The comma won't be used. */ |
124e13d9 SM |
8092 | payload_capacity_bytes += 1; |
8093 | payload_capacity_bytes -= strlen (header); | |
8094 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8095 | |
a76d924d | 8096 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8097 | |
a76d924d DJ |
8098 | strcat (rs->buf, header); |
8099 | p = rs->buf + strlen (header); | |
8100 | ||
8101 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8102 | if (packet_format == 'X') | |
c906108c | 8103 | { |
23860348 | 8104 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8105 | todo_units = std::min (len_units, |
8106 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8107 | if (use_length) |
124e13d9 | 8108 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8109 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8110 | } |
8111 | else | |
8112 | { | |
124e13d9 | 8113 | /* Number of bytes that will fit. */ |
325fac50 PA |
8114 | todo_units |
8115 | = std::min (len_units, | |
8116 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8117 | if (use_length) |
124e13d9 | 8118 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8119 | todo_units = std::min (todo_units, |
8120 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8121 | } |
a76d924d | 8122 | |
124e13d9 | 8123 | if (todo_units <= 0) |
3de11b2e | 8124 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8125 | _("minimum packet size too small to write data")); |
802188a7 | 8126 | |
6765f3e5 DJ |
8127 | /* If we already need another packet, then try to align the end |
8128 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8129 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8130 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8131 | |
a257b5bb | 8132 | /* Append "<memaddr>". */ |
917317f4 JM |
8133 | memaddr = remote_address_masked (memaddr); |
8134 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8135 | |
a76d924d DJ |
8136 | if (use_length) |
8137 | { | |
8138 | /* Append ",". */ | |
8139 | *p++ = ','; | |
802188a7 | 8140 | |
124e13d9 SM |
8141 | /* Append the length and retain its location and size. It may need to be |
8142 | adjusted once the packet body has been created. */ | |
a76d924d | 8143 | plen = p; |
124e13d9 | 8144 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8145 | p += plenlen; |
8146 | } | |
a257b5bb AC |
8147 | |
8148 | /* Append ":". */ | |
917317f4 JM |
8149 | *p++ = ':'; |
8150 | *p = '\0'; | |
802188a7 | 8151 | |
a257b5bb | 8152 | /* Append the packet body. */ |
a76d924d | 8153 | if (packet_format == 'X') |
917317f4 | 8154 | { |
917317f4 JM |
8155 | /* Binary mode. Send target system values byte by byte, in |
8156 | increasing byte addresses. Only escape certain critical | |
8157 | characters. */ | |
124e13d9 SM |
8158 | payload_length_bytes = |
8159 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8160 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8161 | |
124e13d9 | 8162 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8163 | a second try to keep the end of the packet aligned. Don't do |
8164 | this if the packet is tiny. */ | |
124e13d9 | 8165 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8166 | { |
124e13d9 SM |
8167 | int new_todo_units; |
8168 | ||
8169 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8170 | ||
8171 | if (new_todo_units != units_written) | |
8172 | payload_length_bytes = | |
8173 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8174 | (gdb_byte *) p, &units_written, | |
8175 | payload_capacity_bytes); | |
6765f3e5 DJ |
8176 | } |
8177 | ||
124e13d9 SM |
8178 | p += payload_length_bytes; |
8179 | if (use_length && units_written < todo_units) | |
c906108c | 8180 | { |
802188a7 | 8181 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8182 | and we have actually sent fewer units than planned. |
917317f4 JM |
8183 | Fix-up the length field of the packet. Use the same |
8184 | number of characters as before. */ | |
124e13d9 SM |
8185 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8186 | plenlen); | |
917317f4 | 8187 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8188 | } |
a76d924d DJ |
8189 | } |
8190 | else | |
8191 | { | |
917317f4 JM |
8192 | /* Normal mode: Send target system values byte by byte, in |
8193 | increasing byte addresses. Each byte is encoded as a two hex | |
8194 | value. */ | |
124e13d9 SM |
8195 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8196 | units_written = todo_units; | |
c906108c | 8197 | } |
802188a7 | 8198 | |
2e9f7625 | 8199 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8200 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8201 | |
2e9f7625 | 8202 | if (rs->buf[0] == 'E') |
00d84524 | 8203 | return TARGET_XFER_E_IO; |
802188a7 | 8204 | |
124e13d9 SM |
8205 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8206 | send fewer units than we'd planned. */ | |
8207 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8208 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8209 | } |
8210 | ||
a76d924d DJ |
8211 | /* Write memory data directly to the remote machine. |
8212 | This does not inform the data cache; the data cache uses this. | |
8213 | MEMADDR is the address in the remote memory space. | |
8214 | MYADDR is the address of the buffer in our space. | |
8215 | LEN is the number of bytes. | |
8216 | ||
9b409511 YQ |
8217 | Return the transferred status, error or OK (an |
8218 | 'enum target_xfer_status' value). Save the number of bytes | |
8219 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8220 | |
9b409511 YQ |
8221 | static enum target_xfer_status |
8222 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8223 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8224 | { |
a121b7c1 | 8225 | const char *packet_format = NULL; |
a76d924d DJ |
8226 | |
8227 | /* Check whether the target supports binary download. */ | |
8228 | check_binary_download (memaddr); | |
8229 | ||
4082afcc | 8230 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8231 | { |
8232 | case PACKET_ENABLE: | |
8233 | packet_format = "X"; | |
8234 | break; | |
8235 | case PACKET_DISABLE: | |
8236 | packet_format = "M"; | |
8237 | break; | |
8238 | case PACKET_SUPPORT_UNKNOWN: | |
8239 | internal_error (__FILE__, __LINE__, | |
8240 | _("remote_write_bytes: bad internal state")); | |
8241 | default: | |
8242 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8243 | } | |
8244 | ||
8245 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8246 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8247 | packet_format[0], 1); |
a76d924d DJ |
8248 | } |
8249 | ||
9217e74e YQ |
8250 | /* Read memory data directly from the remote machine. |
8251 | This does not use the data cache; the data cache uses this. | |
8252 | MEMADDR is the address in the remote memory space. | |
8253 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8254 | LEN_UNITS is the number of addressable memory units to read.. |
8255 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8256 | |
8257 | Return the transferred status, error or OK (an | |
8258 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8259 | transferred in *XFERED_LEN_UNITS. |
8260 | ||
8261 | See the comment of remote_write_bytes_aux for an example of | |
8262 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8263 | |
8264 | static enum target_xfer_status | |
124e13d9 SM |
8265 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8266 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8267 | { |
8268 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8269 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8270 | char *p; |
124e13d9 SM |
8271 | int todo_units; |
8272 | int decoded_bytes; | |
9217e74e | 8273 | |
124e13d9 | 8274 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8275 | /* The packet buffer will be large enough for the payload; |
8276 | get_memory_packet_size ensures this. */ | |
8277 | ||
124e13d9 | 8278 | /* Number of units that will fit. */ |
325fac50 PA |
8279 | todo_units = std::min (len_units, |
8280 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8281 | |
8282 | /* Construct "m"<memaddr>","<len>". */ | |
8283 | memaddr = remote_address_masked (memaddr); | |
8284 | p = rs->buf; | |
8285 | *p++ = 'm'; | |
8286 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8287 | *p++ = ','; | |
124e13d9 | 8288 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8289 | *p = '\0'; |
8290 | putpkt (rs->buf); | |
8291 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8292 | if (rs->buf[0] == 'E' | |
8293 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8294 | && rs->buf[3] == '\0') | |
8295 | return TARGET_XFER_E_IO; | |
8296 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8297 | characters. */ | |
8298 | p = rs->buf; | |
124e13d9 | 8299 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8300 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8301 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8302 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8303 | } |
8304 | ||
b55fbac4 YQ |
8305 | /* Using the set of read-only target sections of remote, read live |
8306 | read-only memory. | |
8acf9577 YQ |
8307 | |
8308 | For interface/parameters/return description see target.h, | |
8309 | to_xfer_partial. */ | |
8310 | ||
8311 | static enum target_xfer_status | |
b55fbac4 YQ |
8312 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8313 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8314 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8315 | { |
8316 | struct target_section *secp; | |
8317 | struct target_section_table *table; | |
8318 | ||
8319 | secp = target_section_by_addr (ops, memaddr); | |
8320 | if (secp != NULL | |
8321 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8322 | secp->the_bfd_section) | |
8323 | & SEC_READONLY)) | |
8324 | { | |
8325 | struct target_section *p; | |
8326 | ULONGEST memend = memaddr + len; | |
8327 | ||
8328 | table = target_get_section_table (ops); | |
8329 | ||
8330 | for (p = table->sections; p < table->sections_end; p++) | |
8331 | { | |
8332 | if (memaddr >= p->addr) | |
8333 | { | |
8334 | if (memend <= p->endaddr) | |
8335 | { | |
8336 | /* Entire transfer is within this section. */ | |
124e13d9 | 8337 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8338 | xfered_len); |
8acf9577 YQ |
8339 | } |
8340 | else if (memaddr >= p->endaddr) | |
8341 | { | |
8342 | /* This section ends before the transfer starts. */ | |
8343 | continue; | |
8344 | } | |
8345 | else | |
8346 | { | |
8347 | /* This section overlaps the transfer. Just do half. */ | |
8348 | len = p->endaddr - memaddr; | |
124e13d9 | 8349 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8350 | xfered_len); |
8acf9577 YQ |
8351 | } |
8352 | } | |
8353 | } | |
8354 | } | |
8355 | ||
8356 | return TARGET_XFER_EOF; | |
8357 | } | |
8358 | ||
9217e74e YQ |
8359 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8360 | first if the requested memory is unavailable in traceframe. | |
8361 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8362 | |
9b409511 | 8363 | static enum target_xfer_status |
8acf9577 | 8364 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8365 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8366 | ULONGEST *xfered_len) | |
c906108c | 8367 | { |
6b6aa828 | 8368 | if (len == 0) |
96c4f946 | 8369 | return TARGET_XFER_EOF; |
b2182ed2 | 8370 | |
8acf9577 YQ |
8371 | if (get_traceframe_number () != -1) |
8372 | { | |
a79b1bc6 | 8373 | std::vector<mem_range> available; |
8acf9577 YQ |
8374 | |
8375 | /* If we fail to get the set of available memory, then the | |
8376 | target does not support querying traceframe info, and so we | |
8377 | attempt reading from the traceframe anyway (assuming the | |
8378 | target implements the old QTro packet then). */ | |
8379 | if (traceframe_available_memory (&available, memaddr, len)) | |
8380 | { | |
a79b1bc6 | 8381 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8382 | { |
8383 | enum target_xfer_status res; | |
8384 | ||
8385 | /* Don't read into the traceframe's available | |
8386 | memory. */ | |
a79b1bc6 | 8387 | if (!available.empty ()) |
8acf9577 YQ |
8388 | { |
8389 | LONGEST oldlen = len; | |
8390 | ||
a79b1bc6 | 8391 | len = available[0].start - memaddr; |
8acf9577 YQ |
8392 | gdb_assert (len <= oldlen); |
8393 | } | |
8394 | ||
8acf9577 | 8395 | /* This goes through the topmost target again. */ |
b55fbac4 | 8396 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8397 | len, unit_size, xfered_len); |
8acf9577 YQ |
8398 | if (res == TARGET_XFER_OK) |
8399 | return TARGET_XFER_OK; | |
8400 | else | |
8401 | { | |
8402 | /* No use trying further, we know some memory starting | |
8403 | at MEMADDR isn't available. */ | |
8404 | *xfered_len = len; | |
92ffd475 PC |
8405 | return (*xfered_len != 0) ? |
8406 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8407 | } |
8408 | } | |
8409 | ||
8410 | /* Don't try to read more than how much is available, in | |
8411 | case the target implements the deprecated QTro packet to | |
8412 | cater for older GDBs (the target's knowledge of read-only | |
8413 | sections may be outdated by now). */ | |
a79b1bc6 | 8414 | len = available[0].length; |
8acf9577 YQ |
8415 | } |
8416 | } | |
8417 | ||
124e13d9 | 8418 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8419 | } |
74531fed | 8420 | |
c906108c | 8421 | \f |
c906108c | 8422 | |
a76d924d DJ |
8423 | /* Sends a packet with content determined by the printf format string |
8424 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8425 | whether the packet was a success, a failure, or unknown. */ | |
8426 | ||
77b64a49 PA |
8427 | static enum packet_result remote_send_printf (const char *format, ...) |
8428 | ATTRIBUTE_PRINTF (1, 2); | |
8429 | ||
2c0b251b | 8430 | static enum packet_result |
a76d924d DJ |
8431 | remote_send_printf (const char *format, ...) |
8432 | { | |
8433 | struct remote_state *rs = get_remote_state (); | |
8434 | int max_size = get_remote_packet_size (); | |
a76d924d | 8435 | va_list ap; |
a744cf53 | 8436 | |
a76d924d DJ |
8437 | va_start (ap, format); |
8438 | ||
8439 | rs->buf[0] = '\0'; | |
8440 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8441 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8442 | |
8443 | if (putpkt (rs->buf) < 0) | |
8444 | error (_("Communication problem with target.")); | |
8445 | ||
8446 | rs->buf[0] = '\0'; | |
8447 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8448 | ||
8449 | return packet_check_result (rs->buf); | |
8450 | } | |
8451 | ||
a76d924d DJ |
8452 | /* Flash writing can take quite some time. We'll set |
8453 | effectively infinite timeout for flash operations. | |
8454 | In future, we'll need to decide on a better approach. */ | |
8455 | static const int remote_flash_timeout = 1000; | |
8456 | ||
8457 | static void | |
8458 | remote_flash_erase (struct target_ops *ops, | |
8459 | ULONGEST address, LONGEST length) | |
8460 | { | |
f5656ead | 8461 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8462 | enum packet_result ret; |
2ec845e7 TT |
8463 | scoped_restore restore_timeout |
8464 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8465 | |
8466 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8467 | phex (address, addr_size), |
a76d924d DJ |
8468 | phex (length, 4)); |
8469 | switch (ret) | |
8470 | { | |
8471 | case PACKET_UNKNOWN: | |
8472 | error (_("Remote target does not support flash erase")); | |
8473 | case PACKET_ERROR: | |
8474 | error (_("Error erasing flash with vFlashErase packet")); | |
8475 | default: | |
8476 | break; | |
8477 | } | |
a76d924d DJ |
8478 | } |
8479 | ||
9b409511 YQ |
8480 | static enum target_xfer_status |
8481 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8482 | ULONGEST length, ULONGEST *xfered_len, | |
8483 | const gdb_byte *data) | |
a76d924d | 8484 | { |
2ec845e7 TT |
8485 | scoped_restore restore_timeout |
8486 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8487 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8488 | xfered_len,'X', 0); | |
a76d924d DJ |
8489 | } |
8490 | ||
8491 | static void | |
8492 | remote_flash_done (struct target_ops *ops) | |
8493 | { | |
a76d924d | 8494 | int ret; |
a76d924d | 8495 | |
2ec845e7 TT |
8496 | scoped_restore restore_timeout |
8497 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8498 | ||
a76d924d | 8499 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8500 | |
8501 | switch (ret) | |
8502 | { | |
8503 | case PACKET_UNKNOWN: | |
8504 | error (_("Remote target does not support vFlashDone")); | |
8505 | case PACKET_ERROR: | |
8506 | error (_("Error finishing flash operation")); | |
8507 | default: | |
8508 | break; | |
8509 | } | |
8510 | } | |
8511 | ||
c906108c | 8512 | static void |
fba45db2 | 8513 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8514 | { |
8515 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8516 | } | |
8517 | \f | |
8518 | /* Stuff for dealing with the packets which are part of this protocol. | |
8519 | See comment at top of file for details. */ | |
8520 | ||
1927e618 PA |
8521 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8522 | error to higher layers. Called when a serial error is detected. | |
8523 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8524 | the system error message for errno at function entry and final dot |
8525 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8526 | |
8527 | static void | |
8528 | unpush_and_perror (const char *string) | |
8529 | { | |
d6cb50a2 | 8530 | int saved_errno = errno; |
1927e618 PA |
8531 | |
8532 | remote_unpush_target (); | |
d6cb50a2 JK |
8533 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8534 | safe_strerror (saved_errno)); | |
1927e618 PA |
8535 | } |
8536 | ||
048094ac PA |
8537 | /* Read a single character from the remote end. The current quit |
8538 | handler is overridden to avoid quitting in the middle of packet | |
8539 | sequence, as that would break communication with the remote server. | |
8540 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8541 | |
8542 | static int | |
fba45db2 | 8543 | readchar (int timeout) |
c906108c SS |
8544 | { |
8545 | int ch; | |
5d93a237 | 8546 | struct remote_state *rs = get_remote_state (); |
048094ac | 8547 | |
2ec845e7 TT |
8548 | { |
8549 | scoped_restore restore_quit | |
8550 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8551 | |
2ec845e7 | 8552 | rs->got_ctrlc_during_io = 0; |
c906108c | 8553 | |
2ec845e7 | 8554 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8555 | |
2ec845e7 TT |
8556 | if (rs->got_ctrlc_during_io) |
8557 | set_quit_flag (); | |
8558 | } | |
048094ac | 8559 | |
2acceee2 | 8560 | if (ch >= 0) |
0876f84a | 8561 | return ch; |
2acceee2 JM |
8562 | |
8563 | switch ((enum serial_rc) ch) | |
c906108c SS |
8564 | { |
8565 | case SERIAL_EOF: | |
78a095c3 | 8566 | remote_unpush_target (); |
598d3636 | 8567 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8568 | /* no return */ |
c906108c | 8569 | case SERIAL_ERROR: |
1927e618 PA |
8570 | unpush_and_perror (_("Remote communication error. " |
8571 | "Target disconnected.")); | |
2acceee2 | 8572 | /* no return */ |
c906108c | 8573 | case SERIAL_TIMEOUT: |
2acceee2 | 8574 | break; |
c906108c | 8575 | } |
2acceee2 | 8576 | return ch; |
c906108c SS |
8577 | } |
8578 | ||
c33e31fd | 8579 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8580 | writing fails. The current quit handler is overridden to avoid |
8581 | quitting in the middle of packet sequence, as that would break | |
8582 | communication with the remote server. See | |
8583 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8584 | |
8585 | static void | |
8586 | remote_serial_write (const char *str, int len) | |
8587 | { | |
5d93a237 | 8588 | struct remote_state *rs = get_remote_state (); |
048094ac | 8589 | |
2ec845e7 TT |
8590 | scoped_restore restore_quit |
8591 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8592 | |
8593 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8594 | |
8595 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8596 | { |
1927e618 PA |
8597 | unpush_and_perror (_("Remote communication error. " |
8598 | "Target disconnected.")); | |
c33e31fd | 8599 | } |
048094ac PA |
8600 | |
8601 | if (rs->got_ctrlc_during_io) | |
8602 | set_quit_flag (); | |
c33e31fd PA |
8603 | } |
8604 | ||
b3ced9ba PA |
8605 | /* Return a string representing an escaped version of BUF, of len N. |
8606 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8607 | |
b3ced9ba | 8608 | static std::string |
6e5abd65 PA |
8609 | escape_buffer (const char *buf, int n) |
8610 | { | |
d7e74731 | 8611 | string_file stb; |
6e5abd65 | 8612 | |
d7e74731 PA |
8613 | stb.putstrn (buf, n, '\\'); |
8614 | return std::move (stb.string ()); | |
6e5abd65 PA |
8615 | } |
8616 | ||
c906108c SS |
8617 | /* Display a null-terminated packet on stdout, for debugging, using C |
8618 | string notation. */ | |
8619 | ||
8620 | static void | |
baa336ce | 8621 | print_packet (const char *buf) |
c906108c SS |
8622 | { |
8623 | puts_filtered ("\""); | |
43e526b9 | 8624 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8625 | puts_filtered ("\""); |
8626 | } | |
8627 | ||
8628 | int | |
baa336ce | 8629 | putpkt (const char *buf) |
c906108c SS |
8630 | { |
8631 | return putpkt_binary (buf, strlen (buf)); | |
8632 | } | |
8633 | ||
8634 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8635 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8636 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8637 | and for a possible /0 if we are debugging (remote_debug) and want |
8638 | to print the sent packet as a string. */ | |
c906108c SS |
8639 | |
8640 | static int | |
baa336ce | 8641 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8642 | { |
2d717e4f | 8643 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8644 | int i; |
8645 | unsigned char csum = 0; | |
b80406ac TT |
8646 | gdb::def_vector<char> data (cnt + 6); |
8647 | char *buf2 = data.data (); | |
085dd6e6 | 8648 | |
c906108c SS |
8649 | int ch; |
8650 | int tcount = 0; | |
8651 | char *p; | |
8652 | ||
e24a49d8 PA |
8653 | /* Catch cases like trying to read memory or listing threads while |
8654 | we're waiting for a stop reply. The remote server wouldn't be | |
8655 | ready to handle this request, so we'd hang and timeout. We don't | |
8656 | have to worry about this in synchronous mode, because in that | |
8657 | case it's not possible to issue a command while the target is | |
74531fed PA |
8658 | running. This is not a problem in non-stop mode, because in that |
8659 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8660 | if (!target_is_non_stop_p () |
8661 | && target_is_async_p () | |
8662 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8663 | { |
8664 | error (_("Cannot execute this command while the target is running.\n" | |
8665 | "Use the \"interrupt\" command to stop the target\n" | |
8666 | "and then try again.")); | |
8667 | } | |
e24a49d8 | 8668 | |
2d717e4f DJ |
8669 | /* We're sending out a new packet. Make sure we don't look at a |
8670 | stale cached response. */ | |
8671 | rs->cached_wait_status = 0; | |
8672 | ||
c906108c SS |
8673 | /* Copy the packet into buffer BUF2, encapsulating it |
8674 | and giving it a checksum. */ | |
8675 | ||
c906108c SS |
8676 | p = buf2; |
8677 | *p++ = '$'; | |
8678 | ||
8679 | for (i = 0; i < cnt; i++) | |
8680 | { | |
8681 | csum += buf[i]; | |
8682 | *p++ = buf[i]; | |
8683 | } | |
8684 | *p++ = '#'; | |
8685 | *p++ = tohex ((csum >> 4) & 0xf); | |
8686 | *p++ = tohex (csum & 0xf); | |
8687 | ||
8688 | /* Send it over and over until we get a positive ack. */ | |
8689 | ||
8690 | while (1) | |
8691 | { | |
8692 | int started_error_output = 0; | |
8693 | ||
8694 | if (remote_debug) | |
8695 | { | |
8696 | *p = '\0'; | |
b3ced9ba | 8697 | |
6f8976bf YQ |
8698 | int len = (int) (p - buf2); |
8699 | ||
8700 | std::string str | |
8701 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
8702 | ||
8703 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
8704 | ||
567a3e54 SM |
8705 | if (len > REMOTE_DEBUG_MAX_CHAR) |
8706 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
8707 | len - REMOTE_DEBUG_MAX_CHAR); | |
6f8976bf YQ |
8708 | |
8709 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 8710 | |
0f71a2f6 | 8711 | gdb_flush (gdb_stdlog); |
c906108c | 8712 | } |
c33e31fd | 8713 | remote_serial_write (buf2, p - buf2); |
c906108c | 8714 | |
a6f3e723 SL |
8715 | /* If this is a no acks version of the remote protocol, send the |
8716 | packet and move on. */ | |
8717 | if (rs->noack_mode) | |
8718 | break; | |
8719 | ||
74531fed PA |
8720 | /* Read until either a timeout occurs (-2) or '+' is read. |
8721 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8722 | while (1) |
8723 | { | |
8724 | ch = readchar (remote_timeout); | |
8725 | ||
c5aa993b | 8726 | if (remote_debug) |
c906108c SS |
8727 | { |
8728 | switch (ch) | |
8729 | { | |
8730 | case '+': | |
1216fa2c | 8731 | case '-': |
c906108c SS |
8732 | case SERIAL_TIMEOUT: |
8733 | case '$': | |
74531fed | 8734 | case '%': |
c906108c SS |
8735 | if (started_error_output) |
8736 | { | |
8737 | putchar_unfiltered ('\n'); | |
8738 | started_error_output = 0; | |
8739 | } | |
8740 | } | |
8741 | } | |
8742 | ||
8743 | switch (ch) | |
8744 | { | |
8745 | case '+': | |
8746 | if (remote_debug) | |
0f71a2f6 | 8747 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 8748 | return 1; |
1216fa2c AC |
8749 | case '-': |
8750 | if (remote_debug) | |
8751 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8752 | /* FALLTHROUGH */ |
c906108c | 8753 | case SERIAL_TIMEOUT: |
c5aa993b | 8754 | tcount++; |
c906108c | 8755 | if (tcount > 3) |
b80406ac | 8756 | return 0; |
23860348 | 8757 | break; /* Retransmit buffer. */ |
c906108c SS |
8758 | case '$': |
8759 | { | |
40e3f985 | 8760 | if (remote_debug) |
2bc416ba | 8761 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8762 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8763 | /* It's probably an old response sent because an ACK |
8764 | was lost. Gobble up the packet and ack it so it | |
8765 | doesn't get retransmitted when we resend this | |
8766 | packet. */ | |
6d820c5c | 8767 | skip_frame (); |
c33e31fd | 8768 | remote_serial_write ("+", 1); |
23860348 | 8769 | continue; /* Now, go look for +. */ |
c906108c | 8770 | } |
74531fed PA |
8771 | |
8772 | case '%': | |
8773 | { | |
8774 | int val; | |
8775 | ||
8776 | /* If we got a notification, handle it, and go back to looking | |
8777 | for an ack. */ | |
8778 | /* We've found the start of a notification. Now | |
8779 | collect the data. */ | |
8780 | val = read_frame (&rs->buf, &rs->buf_size); | |
8781 | if (val >= 0) | |
8782 | { | |
8783 | if (remote_debug) | |
8784 | { | |
b3ced9ba | 8785 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 8786 | |
6e5abd65 PA |
8787 | fprintf_unfiltered (gdb_stdlog, |
8788 | " Notification received: %s\n", | |
b3ced9ba | 8789 | str.c_str ()); |
74531fed | 8790 | } |
5965e028 | 8791 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8792 | /* We're in sync now, rewait for the ack. */ |
8793 | tcount = 0; | |
8794 | } | |
8795 | else | |
8796 | { | |
8797 | if (remote_debug) | |
8798 | { | |
8799 | if (!started_error_output) | |
8800 | { | |
8801 | started_error_output = 1; | |
8802 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8803 | } | |
8804 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8805 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8806 | } | |
8807 | } | |
8808 | continue; | |
8809 | } | |
8810 | /* fall-through */ | |
c906108c SS |
8811 | default: |
8812 | if (remote_debug) | |
8813 | { | |
8814 | if (!started_error_output) | |
8815 | { | |
8816 | started_error_output = 1; | |
0f71a2f6 | 8817 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8818 | } |
0f71a2f6 | 8819 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8820 | } |
8821 | continue; | |
8822 | } | |
23860348 | 8823 | break; /* Here to retransmit. */ |
c906108c SS |
8824 | } |
8825 | ||
8826 | #if 0 | |
8827 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8828 | able to get out next time we call QUIT, without anything as |
8829 | violent as interrupt_query. If we want to provide a way out of | |
8830 | here without getting to the next QUIT, it should be based on | |
8831 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8832 | if (quit_flag) |
8833 | { | |
8834 | quit_flag = 0; | |
8835 | interrupt_query (); | |
8836 | } | |
8837 | #endif | |
8838 | } | |
a5c0808e | 8839 | |
a6f3e723 | 8840 | return 0; |
c906108c SS |
8841 | } |
8842 | ||
6d820c5c DJ |
8843 | /* Come here after finding the start of a frame when we expected an |
8844 | ack. Do our best to discard the rest of this packet. */ | |
8845 | ||
8846 | static void | |
8847 | skip_frame (void) | |
8848 | { | |
8849 | int c; | |
8850 | ||
8851 | while (1) | |
8852 | { | |
8853 | c = readchar (remote_timeout); | |
8854 | switch (c) | |
8855 | { | |
8856 | case SERIAL_TIMEOUT: | |
8857 | /* Nothing we can do. */ | |
8858 | return; | |
8859 | case '#': | |
8860 | /* Discard the two bytes of checksum and stop. */ | |
8861 | c = readchar (remote_timeout); | |
8862 | if (c >= 0) | |
8863 | c = readchar (remote_timeout); | |
8864 | ||
8865 | return; | |
8866 | case '*': /* Run length encoding. */ | |
8867 | /* Discard the repeat count. */ | |
8868 | c = readchar (remote_timeout); | |
8869 | if (c < 0) | |
8870 | return; | |
8871 | break; | |
8872 | default: | |
8873 | /* A regular character. */ | |
8874 | break; | |
8875 | } | |
8876 | } | |
8877 | } | |
8878 | ||
c906108c | 8879 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8880 | into *BUF, verifying the checksum, length, and handling run-length |
8881 | compression. NUL terminate the buffer. If there is not enough room, | |
8882 | expand *BUF using xrealloc. | |
c906108c | 8883 | |
c2d11a7d JM |
8884 | Returns -1 on error, number of characters in buffer (ignoring the |
8885 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8886 | SERIAL status indications). */ |
c2d11a7d JM |
8887 | |
8888 | static long | |
6d820c5c DJ |
8889 | read_frame (char **buf_p, |
8890 | long *sizeof_buf) | |
c906108c SS |
8891 | { |
8892 | unsigned char csum; | |
c2d11a7d | 8893 | long bc; |
c906108c | 8894 | int c; |
6d820c5c | 8895 | char *buf = *buf_p; |
a6f3e723 | 8896 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8897 | |
8898 | csum = 0; | |
c2d11a7d | 8899 | bc = 0; |
c906108c SS |
8900 | |
8901 | while (1) | |
8902 | { | |
8903 | c = readchar (remote_timeout); | |
c906108c SS |
8904 | switch (c) |
8905 | { | |
8906 | case SERIAL_TIMEOUT: | |
8907 | if (remote_debug) | |
0f71a2f6 | 8908 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8909 | return -1; |
c906108c SS |
8910 | case '$': |
8911 | if (remote_debug) | |
0f71a2f6 JM |
8912 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8913 | gdb_stdlog); | |
23860348 | 8914 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8915 | case '#': |
8916 | { | |
8917 | unsigned char pktcsum; | |
e1b09194 AC |
8918 | int check_0 = 0; |
8919 | int check_1 = 0; | |
c906108c | 8920 | |
c2d11a7d | 8921 | buf[bc] = '\0'; |
c906108c | 8922 | |
e1b09194 AC |
8923 | check_0 = readchar (remote_timeout); |
8924 | if (check_0 >= 0) | |
8925 | check_1 = readchar (remote_timeout); | |
802188a7 | 8926 | |
e1b09194 AC |
8927 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8928 | { | |
8929 | if (remote_debug) | |
2bc416ba | 8930 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8931 | gdb_stdlog); |
e1b09194 AC |
8932 | return -1; |
8933 | } | |
8934 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8935 | { |
8936 | if (remote_debug) | |
2bc416ba | 8937 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8938 | gdb_stdlog); |
40e3f985 FN |
8939 | return -1; |
8940 | } | |
c906108c | 8941 | |
a6f3e723 SL |
8942 | /* Don't recompute the checksum; with no ack packets we |
8943 | don't have any way to indicate a packet retransmission | |
8944 | is necessary. */ | |
8945 | if (rs->noack_mode) | |
8946 | return bc; | |
8947 | ||
e1b09194 | 8948 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8949 | if (csum == pktcsum) |
c2d11a7d | 8950 | return bc; |
c906108c | 8951 | |
c5aa993b | 8952 | if (remote_debug) |
c906108c | 8953 | { |
b3ced9ba | 8954 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 8955 | |
6e5abd65 | 8956 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
8957 | "Bad checksum, sentsum=0x%x, " |
8958 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 8959 | pktcsum, csum, str.c_str ()); |
c906108c | 8960 | } |
c2d11a7d | 8961 | /* Number of characters in buffer ignoring trailing |
23860348 | 8962 | NULL. */ |
c2d11a7d | 8963 | return -1; |
c906108c | 8964 | } |
23860348 | 8965 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8966 | { |
8967 | int repeat; | |
c906108c | 8968 | |
a744cf53 | 8969 | csum += c; |
b4501125 AC |
8970 | c = readchar (remote_timeout); |
8971 | csum += c; | |
23860348 | 8972 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8973 | |
23860348 | 8974 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8975 | |
6d820c5c | 8976 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8977 | { |
6d820c5c DJ |
8978 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8979 | { | |
8980 | /* Make some more room in the buffer. */ | |
8981 | *sizeof_buf += repeat; | |
224c3ddb | 8982 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
8983 | buf = *buf_p; |
8984 | } | |
8985 | ||
c2d11a7d JM |
8986 | memset (&buf[bc], buf[bc - 1], repeat); |
8987 | bc += repeat; | |
c2c6d25f JM |
8988 | continue; |
8989 | } | |
8990 | ||
c2d11a7d | 8991 | buf[bc] = '\0'; |
6d820c5c | 8992 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8993 | return -1; |
c2c6d25f | 8994 | } |
c906108c | 8995 | default: |
6d820c5c | 8996 | if (bc >= *sizeof_buf - 1) |
c906108c | 8997 | { |
6d820c5c DJ |
8998 | /* Make some more room in the buffer. */ |
8999 | *sizeof_buf *= 2; | |
224c3ddb | 9000 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9001 | buf = *buf_p; |
c906108c SS |
9002 | } |
9003 | ||
6d820c5c DJ |
9004 | buf[bc++] = c; |
9005 | csum += c; | |
9006 | continue; | |
c906108c SS |
9007 | } |
9008 | } | |
9009 | } | |
9010 | ||
9011 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9012 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9013 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9014 | rather than timing out; this is used (in synchronous mode) to wait | |
9015 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9016 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9017 | don't have to change all the calls to getpkt to deal with the | |
9018 | return value, because at the moment I don't know what the right | |
23860348 | 9019 | thing to do it for those. */ |
c906108c | 9020 | void |
6d820c5c DJ |
9021 | getpkt (char **buf, |
9022 | long *sizeof_buf, | |
c2d11a7d | 9023 | int forever) |
d9fcf2fb | 9024 | { |
54887903 | 9025 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9026 | } |
9027 | ||
9028 | ||
9029 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9030 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9031 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9032 | rather than timing out; this is used (in synchronous mode) to wait | |
9033 | for a target that is is executing user code to stop. If FOREVER == | |
9034 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9035 | indication of this to the caller. Otherwise return the number of |
9036 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9037 | enough reason to return to the caller. *IS_NOTIF is an output |
9038 | boolean that indicates whether *BUF holds a notification or not | |
9039 | (a regular packet). */ | |
74531fed | 9040 | |
3172dc30 | 9041 | static int |
74531fed | 9042 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9043 | int expecting_notif, int *is_notif) |
c906108c | 9044 | { |
2d717e4f | 9045 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9046 | int c; |
9047 | int tries; | |
9048 | int timeout; | |
df4b58fe | 9049 | int val = -1; |
c906108c | 9050 | |
2d717e4f DJ |
9051 | /* We're reading a new response. Make sure we don't look at a |
9052 | previously cached response. */ | |
9053 | rs->cached_wait_status = 0; | |
9054 | ||
6d820c5c | 9055 | strcpy (*buf, "timeout"); |
c906108c SS |
9056 | |
9057 | if (forever) | |
74531fed PA |
9058 | timeout = watchdog > 0 ? watchdog : -1; |
9059 | else if (expecting_notif) | |
9060 | timeout = 0; /* There should already be a char in the buffer. If | |
9061 | not, bail out. */ | |
c906108c SS |
9062 | else |
9063 | timeout = remote_timeout; | |
9064 | ||
9065 | #define MAX_TRIES 3 | |
9066 | ||
74531fed PA |
9067 | /* Process any number of notifications, and then return when |
9068 | we get a packet. */ | |
9069 | for (;;) | |
c906108c | 9070 | { |
d9c43928 | 9071 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9072 | times. */ |
9073 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9074 | { |
74531fed PA |
9075 | /* This can loop forever if the remote side sends us |
9076 | characters continuously, but if it pauses, we'll get | |
9077 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9078 | we'll count that as a retry. | |
9079 | ||
9080 | Note that even when forever is set, we will only wait | |
9081 | forever prior to the start of a packet. After that, we | |
9082 | expect characters to arrive at a brisk pace. They should | |
9083 | show up within remote_timeout intervals. */ | |
9084 | do | |
9085 | c = readchar (timeout); | |
9086 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9087 | |
9088 | if (c == SERIAL_TIMEOUT) | |
9089 | { | |
74531fed PA |
9090 | if (expecting_notif) |
9091 | return -1; /* Don't complain, it's normal to not get | |
9092 | anything in this case. */ | |
9093 | ||
23860348 | 9094 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9095 | { |
78a095c3 | 9096 | remote_unpush_target (); |
598d3636 JK |
9097 | throw_error (TARGET_CLOSE_ERROR, |
9098 | _("Watchdog timeout has expired. " | |
9099 | "Target detached.")); | |
c906108c | 9100 | } |
c906108c | 9101 | if (remote_debug) |
0f71a2f6 | 9102 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9103 | } |
74531fed PA |
9104 | else |
9105 | { | |
9106 | /* We've found the start of a packet or notification. | |
9107 | Now collect the data. */ | |
9108 | val = read_frame (buf, sizeof_buf); | |
9109 | if (val >= 0) | |
9110 | break; | |
9111 | } | |
9112 | ||
c33e31fd | 9113 | remote_serial_write ("-", 1); |
c906108c | 9114 | } |
c906108c | 9115 | |
74531fed PA |
9116 | if (tries > MAX_TRIES) |
9117 | { | |
9118 | /* We have tried hard enough, and just can't receive the | |
9119 | packet/notification. Give up. */ | |
9120 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9121 | |
74531fed PA |
9122 | /* Skip the ack char if we're in no-ack mode. */ |
9123 | if (!rs->noack_mode) | |
c33e31fd | 9124 | remote_serial_write ("+", 1); |
74531fed PA |
9125 | return -1; |
9126 | } | |
c906108c | 9127 | |
74531fed PA |
9128 | /* If we got an ordinary packet, return that to our caller. */ |
9129 | if (c == '$') | |
c906108c SS |
9130 | { |
9131 | if (remote_debug) | |
43e526b9 | 9132 | { |
6f8976bf YQ |
9133 | std::string str |
9134 | = escape_buffer (*buf, | |
9135 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9136 | ||
9137 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9138 | str.c_str ()); | |
9139 | ||
567a3e54 SM |
9140 | if (val > REMOTE_DEBUG_MAX_CHAR) |
9141 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9142 | val - REMOTE_DEBUG_MAX_CHAR); | |
6e5abd65 | 9143 | |
6f8976bf | 9144 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9145 | } |
a6f3e723 SL |
9146 | |
9147 | /* Skip the ack char if we're in no-ack mode. */ | |
9148 | if (!rs->noack_mode) | |
c33e31fd | 9149 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9150 | if (is_notif != NULL) |
9151 | *is_notif = 0; | |
0876f84a | 9152 | return val; |
c906108c SS |
9153 | } |
9154 | ||
74531fed PA |
9155 | /* If we got a notification, handle it, and go back to looking |
9156 | for a packet. */ | |
9157 | else | |
9158 | { | |
9159 | gdb_assert (c == '%'); | |
9160 | ||
9161 | if (remote_debug) | |
9162 | { | |
b3ced9ba | 9163 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9164 | |
6e5abd65 PA |
9165 | fprintf_unfiltered (gdb_stdlog, |
9166 | " Notification received: %s\n", | |
b3ced9ba | 9167 | str.c_str ()); |
74531fed | 9168 | } |
fee9eda9 YQ |
9169 | if (is_notif != NULL) |
9170 | *is_notif = 1; | |
c906108c | 9171 | |
5965e028 | 9172 | handle_notification (rs->notif_state, *buf); |
c906108c | 9173 | |
74531fed | 9174 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9175 | |
74531fed | 9176 | if (expecting_notif) |
fee9eda9 | 9177 | return val; |
74531fed PA |
9178 | } |
9179 | } | |
9180 | } | |
9181 | ||
9182 | static int | |
9183 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9184 | { | |
fee9eda9 | 9185 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9186 | } |
9187 | ||
9188 | static int | |
fee9eda9 YQ |
9189 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9190 | int *is_notif) | |
74531fed | 9191 | { |
fee9eda9 YQ |
9192 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9193 | is_notif); | |
c906108c | 9194 | } |
74531fed | 9195 | |
cbb8991c DB |
9196 | /* Check whether EVENT is a fork event for the process specified |
9197 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9198 | ||
9199 | static int | |
9200 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9201 | QUEUE_ITER (stop_reply_p) *iter, | |
9202 | stop_reply_p event, | |
9203 | void *data) | |
9204 | { | |
19ba03f4 | 9205 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9206 | int parent_pid = *(int *) param->input; |
9207 | ||
9208 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9209 | { | |
9210 | struct remote_state *rs = get_remote_state (); | |
9211 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9212 | int res; | |
9213 | ||
9214 | res = remote_vkill (child_pid, rs); | |
9215 | if (res != 0) | |
9216 | error (_("Can't kill fork child process %d"), child_pid); | |
9217 | } | |
9218 | ||
9219 | return 1; | |
9220 | } | |
9221 | ||
9222 | /* Kill any new fork children of process PID that haven't been | |
9223 | processed by follow_fork. */ | |
9224 | ||
9225 | static void | |
9226 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9227 | { | |
9228 | struct thread_info *thread; | |
9229 | struct notif_client *notif = ¬if_client_stop; | |
9230 | struct queue_iter_param param; | |
9231 | ||
9232 | /* Kill the fork child threads of any threads in process PID | |
9233 | that are stopped at a fork event. */ | |
9234 | ALL_NON_EXITED_THREADS (thread) | |
9235 | { | |
9236 | struct target_waitstatus *ws = &thread->pending_follow; | |
9237 | ||
9238 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9239 | { | |
9240 | struct remote_state *rs = get_remote_state (); | |
9241 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9242 | int res; | |
9243 | ||
9244 | res = remote_vkill (child_pid, rs); | |
9245 | if (res != 0) | |
9246 | error (_("Can't kill fork child process %d"), child_pid); | |
9247 | } | |
9248 | } | |
9249 | ||
9250 | /* Check for any pending fork events (not reported or processed yet) | |
9251 | in process PID and kill those fork child threads as well. */ | |
9252 | remote_notif_get_pending_events (notif); | |
9253 | param.input = &pid; | |
9254 | param.output = NULL; | |
9255 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9256 | kill_child_of_pending_fork, ¶m); | |
9257 | } | |
9258 | ||
c906108c | 9259 | \f |
8020350c DB |
9260 | /* Target hook to kill the current inferior. */ |
9261 | ||
c906108c | 9262 | static void |
7d85a9c0 | 9263 | remote_kill (struct target_ops *ops) |
43ff13b4 | 9264 | { |
8020350c DB |
9265 | int res = -1; |
9266 | int pid = ptid_get_pid (inferior_ptid); | |
9267 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9268 | |
8020350c | 9269 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9270 | { |
8020350c DB |
9271 | /* If we're stopped while forking and we haven't followed yet, |
9272 | kill the child task. We need to do this before killing the | |
9273 | parent task because if this is a vfork then the parent will | |
9274 | be sleeping. */ | |
9275 | kill_new_fork_children (pid, rs); | |
9276 | ||
9277 | res = remote_vkill (pid, rs); | |
9278 | if (res == 0) | |
0fdf84ca | 9279 | { |
bc1e6c81 | 9280 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9281 | return; |
9282 | } | |
8020350c | 9283 | } |
0fdf84ca | 9284 | |
8020350c DB |
9285 | /* If we are in 'target remote' mode and we are killing the only |
9286 | inferior, then we will tell gdbserver to exit and unpush the | |
9287 | target. */ | |
9288 | if (res == -1 && !remote_multi_process_p (rs) | |
9289 | && number_of_live_inferiors () == 1) | |
9290 | { | |
9291 | remote_kill_k (); | |
9292 | ||
9293 | /* We've killed the remote end, we get to mourn it. If we are | |
9294 | not in extended mode, mourning the inferior also unpushes | |
9295 | remote_ops from the target stack, which closes the remote | |
9296 | connection. */ | |
bc1e6c81 | 9297 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9298 | |
9299 | return; | |
0fdf84ca | 9300 | } |
43ff13b4 | 9301 | |
8020350c | 9302 | error (_("Can't kill process")); |
43ff13b4 JM |
9303 | } |
9304 | ||
8020350c DB |
9305 | /* Send a kill request to the target using the 'vKill' packet. */ |
9306 | ||
82f73884 PA |
9307 | static int |
9308 | remote_vkill (int pid, struct remote_state *rs) | |
9309 | { | |
4082afcc | 9310 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9311 | return -1; |
9312 | ||
9313 | /* Tell the remote target to detach. */ | |
bba74b36 | 9314 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9315 | putpkt (rs->buf); |
9316 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9317 | ||
4082afcc PA |
9318 | switch (packet_ok (rs->buf, |
9319 | &remote_protocol_packets[PACKET_vKill])) | |
9320 | { | |
9321 | case PACKET_OK: | |
9322 | return 0; | |
9323 | case PACKET_ERROR: | |
9324 | return 1; | |
9325 | case PACKET_UNKNOWN: | |
9326 | return -1; | |
9327 | default: | |
9328 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9329 | } | |
82f73884 PA |
9330 | } |
9331 | ||
8020350c DB |
9332 | /* Send a kill request to the target using the 'k' packet. */ |
9333 | ||
82f73884 | 9334 | static void |
8020350c | 9335 | remote_kill_k (void) |
82f73884 | 9336 | { |
8020350c DB |
9337 | /* Catch errors so the user can quit from gdb even when we |
9338 | aren't on speaking terms with the remote system. */ | |
9339 | TRY | |
82f73884 | 9340 | { |
82f73884 | 9341 | putpkt ("k"); |
82f73884 | 9342 | } |
8020350c DB |
9343 | CATCH (ex, RETURN_MASK_ERROR) |
9344 | { | |
9345 | if (ex.error == TARGET_CLOSE_ERROR) | |
9346 | { | |
9347 | /* If we got an (EOF) error that caused the target | |
9348 | to go away, then we're done, that's what we wanted. | |
9349 | "k" is susceptible to cause a premature EOF, given | |
9350 | that the remote server isn't actually required to | |
9351 | reply to "k", and it can happen that it doesn't | |
9352 | even get to reply ACK to the "k". */ | |
9353 | return; | |
9354 | } | |
82f73884 | 9355 | |
8020350c DB |
9356 | /* Otherwise, something went wrong. We didn't actually kill |
9357 | the target. Just propagate the exception, and let the | |
9358 | user or higher layers decide what to do. */ | |
9359 | throw_exception (ex); | |
9360 | } | |
9361 | END_CATCH | |
82f73884 PA |
9362 | } |
9363 | ||
c906108c | 9364 | static void |
20f796c9 | 9365 | remote_mourn (struct target_ops *target) |
c906108c | 9366 | { |
8020350c | 9367 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9368 | |
8020350c DB |
9369 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9370 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9371 | { | |
9372 | unpush_target (target); | |
c906108c | 9373 | |
8020350c DB |
9374 | /* remote_close takes care of doing most of the clean up. */ |
9375 | generic_mourn_inferior (); | |
9376 | return; | |
9377 | } | |
c906108c | 9378 | |
e24a49d8 PA |
9379 | /* In case we got here due to an error, but we're going to stay |
9380 | connected. */ | |
9381 | rs->waiting_for_stop_reply = 0; | |
9382 | ||
dc1981d7 PA |
9383 | /* If the current general thread belonged to the process we just |
9384 | detached from or has exited, the remote side current general | |
9385 | thread becomes undefined. Considering a case like this: | |
9386 | ||
9387 | - We just got here due to a detach. | |
9388 | - The process that we're detaching from happens to immediately | |
9389 | report a global breakpoint being hit in non-stop mode, in the | |
9390 | same thread we had selected before. | |
9391 | - GDB attaches to this process again. | |
9392 | - This event happens to be the next event we handle. | |
9393 | ||
9394 | GDB would consider that the current general thread didn't need to | |
9395 | be set on the stub side (with Hg), since for all it knew, | |
9396 | GENERAL_THREAD hadn't changed. | |
9397 | ||
9398 | Notice that although in all-stop mode, the remote server always | |
9399 | sets the current thread to the thread reporting the stop event, | |
9400 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9401 | not* change the current thread when reporting a breakpoint hit, | |
9402 | due to the decoupling of event reporting and event handling. | |
9403 | ||
9404 | To keep things simple, we always invalidate our notion of the | |
9405 | current thread. */ | |
47f8a51d | 9406 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9407 | |
8020350c | 9408 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9409 | generic_mourn_inferior (); |
9410 | ||
d729566a | 9411 | if (!have_inferiors ()) |
2d717e4f | 9412 | { |
82f73884 PA |
9413 | if (!remote_multi_process_p (rs)) |
9414 | { | |
9415 | /* Check whether the target is running now - some remote stubs | |
9416 | automatically restart after kill. */ | |
9417 | putpkt ("?"); | |
9418 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9419 | ||
9420 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9421 | { | |
3e43a32a MS |
9422 | /* Assume that the target has been restarted. Set |
9423 | inferior_ptid so that bits of core GDB realizes | |
9424 | there's something here, e.g., so that the user can | |
9425 | say "kill" again. */ | |
82f73884 PA |
9426 | inferior_ptid = magic_null_ptid; |
9427 | } | |
82f73884 | 9428 | } |
2d717e4f DJ |
9429 | } |
9430 | } | |
c906108c | 9431 | |
03583c20 | 9432 | static int |
2bfc0540 | 9433 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9434 | { |
4082afcc | 9435 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9436 | } |
9437 | ||
9438 | static void | |
9439 | extended_remote_disable_randomization (int val) | |
9440 | { | |
9441 | struct remote_state *rs = get_remote_state (); | |
9442 | char *reply; | |
9443 | ||
bba74b36 YQ |
9444 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9445 | val); | |
03583c20 | 9446 | putpkt (rs->buf); |
b6bb3468 | 9447 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9448 | if (*reply == '\0') |
9449 | error (_("Target does not support QDisableRandomization.")); | |
9450 | if (strcmp (reply, "OK") != 0) | |
9451 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9452 | } | |
9453 | ||
2d717e4f | 9454 | static int |
7c5ded6a | 9455 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9456 | { |
9457 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9458 | int len; |
94585166 | 9459 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9460 | |
2d717e4f DJ |
9461 | /* If the user has disabled vRun support, or we have detected that |
9462 | support is not available, do not try it. */ | |
4082afcc | 9463 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9464 | return -1; |
424163ea | 9465 | |
2d717e4f DJ |
9466 | strcpy (rs->buf, "vRun;"); |
9467 | len = strlen (rs->buf); | |
c906108c | 9468 | |
2d717e4f DJ |
9469 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9470 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9471 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9472 | strlen (remote_exec_file)); | |
2d717e4f | 9473 | |
7c5ded6a | 9474 | if (!args.empty ()) |
2d717e4f | 9475 | { |
2d717e4f | 9476 | int i; |
2d717e4f | 9477 | |
773a1edc | 9478 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9479 | for (i = 0; argv[i] != NULL; i++) |
9480 | { | |
9481 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9482 | error (_("Argument list too long for run packet")); | |
9483 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9484 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9485 | strlen (argv[i])); | |
2d717e4f | 9486 | } |
2d717e4f DJ |
9487 | } |
9488 | ||
9489 | rs->buf[len++] = '\0'; | |
9490 | ||
9491 | putpkt (rs->buf); | |
9492 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9493 | ||
4082afcc | 9494 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9495 | { |
4082afcc | 9496 | case PACKET_OK: |
3405876a | 9497 | /* We have a wait response. All is well. */ |
2d717e4f | 9498 | return 0; |
4082afcc PA |
9499 | case PACKET_UNKNOWN: |
9500 | return -1; | |
9501 | case PACKET_ERROR: | |
2d717e4f DJ |
9502 | if (remote_exec_file[0] == '\0') |
9503 | error (_("Running the default executable on the remote target failed; " | |
9504 | "try \"set remote exec-file\"?")); | |
9505 | else | |
9506 | error (_("Running \"%s\" on the remote target failed"), | |
9507 | remote_exec_file); | |
4082afcc PA |
9508 | default: |
9509 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9510 | } |
c906108c SS |
9511 | } |
9512 | ||
0a2dde4a SDJ |
9513 | /* Helper function to send set/unset environment packets. ACTION is |
9514 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9515 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9516 | sent. */ | |
9517 | ||
9518 | static void | |
9519 | send_environment_packet (struct remote_state *rs, | |
9520 | const char *action, | |
9521 | const char *packet, | |
9522 | const char *value) | |
9523 | { | |
9524 | /* Convert the environment variable to an hex string, which | |
9525 | is the best format to be transmitted over the wire. */ | |
9526 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9527 | strlen (value)); | |
9528 | ||
9529 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9530 | "%s:%s", packet, encoded_value.c_str ()); | |
9531 | ||
9532 | putpkt (rs->buf); | |
9533 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9534 | if (strcmp (rs->buf, "OK") != 0) | |
9535 | warning (_("Unable to %s environment variable '%s' on remote."), | |
9536 | action, value); | |
9537 | } | |
9538 | ||
9539 | /* Helper function to handle the QEnvironment* packets. */ | |
9540 | ||
9541 | static void | |
9542 | extended_remote_environment_support (struct remote_state *rs) | |
9543 | { | |
9544 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) | |
9545 | { | |
9546 | putpkt ("QEnvironmentReset"); | |
9547 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9548 | if (strcmp (rs->buf, "OK") != 0) | |
9549 | warning (_("Unable to reset environment on remote.")); | |
9550 | } | |
9551 | ||
9552 | gdb_environ *e = ¤t_inferior ()->environment; | |
9553 | ||
9554 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9555 | for (const std::string &el : e->user_set_env ()) | |
9556 | send_environment_packet (rs, "set", "QEnvironmentHexEncoded", | |
9557 | el.c_str ()); | |
9558 | ||
9559 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9560 | for (const std::string &el : e->user_unset_env ()) | |
9561 | send_environment_packet (rs, "unset", "QEnvironmentUnset", el.c_str ()); | |
9562 | } | |
9563 | ||
bc3b087d SDJ |
9564 | /* Helper function to set the current working directory for the |
9565 | inferior in the remote target. */ | |
9566 | ||
9567 | static void | |
9568 | extended_remote_set_inferior_cwd (struct remote_state *rs) | |
9569 | { | |
9570 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
9571 | { | |
9572 | const char *inferior_cwd = get_inferior_cwd (); | |
9573 | ||
9574 | if (inferior_cwd != NULL) | |
9575 | { | |
9576 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
9577 | strlen (inferior_cwd)); | |
9578 | ||
9579 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9580 | "QSetWorkingDir:%s", hexpath.c_str ()); | |
9581 | } | |
9582 | else | |
9583 | { | |
9584 | /* An empty inferior_cwd means that the user wants us to | |
9585 | reset the remote server's inferior's cwd. */ | |
9586 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9587 | "QSetWorkingDir:"); | |
9588 | } | |
9589 | ||
9590 | putpkt (rs->buf); | |
9591 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9592 | if (packet_ok (rs->buf, | |
9593 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
9594 | != PACKET_OK) | |
9595 | error (_("\ | |
9596 | Remote replied unexpectedly while setting the inferior's working\n\ | |
9597 | directory: %s"), | |
9598 | rs->buf); | |
9599 | ||
9600 | } | |
9601 | } | |
9602 | ||
2d717e4f DJ |
9603 | /* In the extended protocol we want to be able to do things like |
9604 | "run" and have them basically work as expected. So we need | |
9605 | a special create_inferior function. We support changing the | |
9606 | executable file and the command line arguments, but not the | |
9607 | environment. */ | |
9608 | ||
43ff13b4 | 9609 | static void |
77a19445 | 9610 | extended_remote_create_inferior (struct target_ops *ops, |
7c5ded6a SDJ |
9611 | const char *exec_file, |
9612 | const std::string &args, | |
77a19445 | 9613 | char **env, int from_tty) |
43ff13b4 | 9614 | { |
3405876a PA |
9615 | int run_worked; |
9616 | char *stop_reply; | |
9617 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9618 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9619 | |
43ff13b4 | 9620 | /* If running asynchronously, register the target file descriptor |
23860348 | 9621 | with the event loop. */ |
75c99385 | 9622 | if (target_can_async_p ()) |
6a3753b3 | 9623 | target_async (1); |
43ff13b4 | 9624 | |
03583c20 | 9625 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9626 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9627 | extended_remote_disable_randomization (disable_randomization); |
9628 | ||
aefd8b33 SDJ |
9629 | /* If startup-with-shell is on, we inform gdbserver to start the |
9630 | remote inferior using a shell. */ | |
9631 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9632 | { | |
9633 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9634 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9635 | putpkt (rs->buf); | |
9636 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9637 | if (strcmp (rs->buf, "OK") != 0) | |
9638 | error (_("\ | |
9639 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9640 | rs->buf); | |
9641 | } | |
9642 | ||
0a2dde4a SDJ |
9643 | extended_remote_environment_support (rs); |
9644 | ||
bc3b087d SDJ |
9645 | extended_remote_set_inferior_cwd (rs); |
9646 | ||
43ff13b4 | 9647 | /* Now restart the remote server. */ |
3405876a PA |
9648 | run_worked = extended_remote_run (args) != -1; |
9649 | if (!run_worked) | |
2d717e4f DJ |
9650 | { |
9651 | /* vRun was not supported. Fail if we need it to do what the | |
9652 | user requested. */ | |
9653 | if (remote_exec_file[0]) | |
9654 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9655 | if (!args.empty ()) |
2d717e4f | 9656 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9657 | |
2d717e4f DJ |
9658 | /* Fall back to "R". */ |
9659 | extended_remote_restart (); | |
9660 | } | |
424163ea | 9661 | |
6c95b8df PA |
9662 | if (!have_inferiors ()) |
9663 | { | |
9664 | /* Clean up from the last time we ran, before we mark the target | |
9665 | running again. This will mark breakpoints uninserted, and | |
9666 | get_offsets may insert breakpoints. */ | |
9667 | init_thread_list (); | |
9668 | init_wait_for_inferior (); | |
9669 | } | |
45280a52 | 9670 | |
3405876a PA |
9671 | /* vRun's success return is a stop reply. */ |
9672 | stop_reply = run_worked ? rs->buf : NULL; | |
9673 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9674 | |
2d717e4f DJ |
9675 | /* Get updated offsets, if the stub uses qOffsets. */ |
9676 | get_offsets (); | |
2d717e4f | 9677 | } |
c906108c | 9678 | \f |
c5aa993b | 9679 | |
b775012e LM |
9680 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9681 | the list of conditions (in agent expression bytecode format), if any, the | |
9682 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9683 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9684 | |
9685 | static int | |
9686 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9687 | struct bp_target_info *bp_tgt, char *buf, |
9688 | char *buf_end) | |
b775012e | 9689 | { |
3cde5c42 | 9690 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
9691 | return 0; |
9692 | ||
9693 | buf += strlen (buf); | |
bba74b36 | 9694 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9695 | buf++; |
9696 | ||
83621223 | 9697 | /* Send conditions to the target. */ |
d538e36d | 9698 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 9699 | { |
bba74b36 | 9700 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 9701 | buf += strlen (buf); |
3cde5c42 | 9702 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
9703 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9704 | *buf = '\0'; | |
9705 | } | |
b775012e LM |
9706 | return 0; |
9707 | } | |
9708 | ||
d3ce09f5 SS |
9709 | static void |
9710 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9711 | struct bp_target_info *bp_tgt, char *buf) | |
9712 | { | |
3cde5c42 | 9713 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
9714 | return; |
9715 | ||
9716 | buf += strlen (buf); | |
9717 | ||
9718 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9719 | buf += strlen (buf); | |
9720 | ||
9721 | /* Concatenate all the agent expressions that are commands into the | |
9722 | cmds parameter. */ | |
df97be55 | 9723 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
9724 | { |
9725 | sprintf (buf, "X%x,", aexpr->len); | |
9726 | buf += strlen (buf); | |
3cde5c42 | 9727 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
9728 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9729 | *buf = '\0'; | |
9730 | } | |
d3ce09f5 SS |
9731 | } |
9732 | ||
8181d85f DJ |
9733 | /* Insert a breakpoint. On targets that have software breakpoint |
9734 | support, we ask the remote target to do the work; on targets | |
9735 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9736 | |
9737 | static int | |
3db08215 MM |
9738 | remote_insert_breakpoint (struct target_ops *ops, |
9739 | struct gdbarch *gdbarch, | |
a6d9a66e | 9740 | struct bp_target_info *bp_tgt) |
c906108c | 9741 | { |
d471ea57 AC |
9742 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9743 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9744 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9745 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9746 | |
4082afcc | 9747 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9748 | { |
0d5ed153 | 9749 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9750 | struct remote_state *rs; |
bba74b36 | 9751 | char *p, *endbuf; |
4fff2411 | 9752 | |
28439a30 PA |
9753 | /* Make sure the remote is pointing at the right process, if |
9754 | necessary. */ | |
9755 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9756 | set_general_process (); | |
9757 | ||
4fff2411 JZ |
9758 | rs = get_remote_state (); |
9759 | p = rs->buf; | |
bba74b36 | 9760 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9761 | |
96baa820 JM |
9762 | *(p++) = 'Z'; |
9763 | *(p++) = '0'; | |
9764 | *(p++) = ','; | |
7c0f6dcc | 9765 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9766 | p += hexnumstr (p, addr); |
579c6ad9 | 9767 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9768 | |
efcc2da7 | 9769 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9770 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9771 | |
78eff0ec | 9772 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9773 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9774 | ||
6d820c5c DJ |
9775 | putpkt (rs->buf); |
9776 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9777 | |
6d820c5c | 9778 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9779 | { |
d471ea57 AC |
9780 | case PACKET_ERROR: |
9781 | return -1; | |
9782 | case PACKET_OK: | |
9783 | return 0; | |
9784 | case PACKET_UNKNOWN: | |
9785 | break; | |
96baa820 JM |
9786 | } |
9787 | } | |
c906108c | 9788 | |
0000e5cc PA |
9789 | /* If this breakpoint has target-side commands but this stub doesn't |
9790 | support Z0 packets, throw error. */ | |
3cde5c42 | 9791 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
9792 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
9793 | Target doesn't support breakpoints that have target side commands.")); | |
9794 | ||
3db08215 | 9795 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9796 | } |
9797 | ||
9798 | static int | |
3db08215 MM |
9799 | remote_remove_breakpoint (struct target_ops *ops, |
9800 | struct gdbarch *gdbarch, | |
73971819 PA |
9801 | struct bp_target_info *bp_tgt, |
9802 | enum remove_bp_reason reason) | |
c906108c | 9803 | { |
8181d85f | 9804 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9805 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9806 | |
4082afcc | 9807 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9808 | { |
6d820c5c | 9809 | char *p = rs->buf; |
bba74b36 | 9810 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9811 | |
28439a30 PA |
9812 | /* Make sure the remote is pointing at the right process, if |
9813 | necessary. */ | |
9814 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9815 | set_general_process (); | |
9816 | ||
96baa820 JM |
9817 | *(p++) = 'z'; |
9818 | *(p++) = '0'; | |
9819 | *(p++) = ','; | |
9820 | ||
8181d85f DJ |
9821 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9822 | p += hexnumstr (p, addr); | |
579c6ad9 | 9823 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9824 | |
6d820c5c DJ |
9825 | putpkt (rs->buf); |
9826 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9827 | |
6d820c5c | 9828 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9829 | } |
9830 | ||
73971819 | 9831 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt, reason); |
c906108c SS |
9832 | } |
9833 | ||
f486487f | 9834 | static enum Z_packet_type |
d471ea57 AC |
9835 | watchpoint_to_Z_packet (int type) |
9836 | { | |
9837 | switch (type) | |
9838 | { | |
9839 | case hw_write: | |
bb858e6a | 9840 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9841 | break; |
9842 | case hw_read: | |
bb858e6a | 9843 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9844 | break; |
9845 | case hw_access: | |
bb858e6a | 9846 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9847 | break; |
9848 | default: | |
8e65ff28 | 9849 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9850 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9851 | } |
9852 | } | |
9853 | ||
3c3bea1c | 9854 | static int |
f486487f SM |
9855 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9856 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9857 | { |
d01949b6 | 9858 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9859 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9860 | char *p; |
d471ea57 | 9861 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9862 | |
4082afcc | 9863 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9864 | return 1; |
802188a7 | 9865 | |
28439a30 PA |
9866 | /* Make sure the remote is pointing at the right process, if |
9867 | necessary. */ | |
9868 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9869 | set_general_process (); | |
9870 | ||
bba74b36 | 9871 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9872 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9873 | addr = remote_address_masked (addr); |
9874 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9875 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9876 | |
6d820c5c DJ |
9877 | putpkt (rs->buf); |
9878 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9879 | |
6d820c5c | 9880 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9881 | { |
9882 | case PACKET_ERROR: | |
d471ea57 | 9883 | return -1; |
85d721b8 PA |
9884 | case PACKET_UNKNOWN: |
9885 | return 1; | |
d471ea57 AC |
9886 | case PACKET_OK: |
9887 | return 0; | |
9888 | } | |
8e65ff28 | 9889 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9890 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9891 | } |
9892 | ||
283002cf MR |
9893 | static int |
9894 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9895 | CORE_ADDR start, int length) | |
9896 | { | |
9897 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9898 | ||
9899 | return diff < length; | |
9900 | } | |
9901 | ||
d471ea57 | 9902 | |
3c3bea1c | 9903 | static int |
f486487f SM |
9904 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9905 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9906 | { |
d01949b6 | 9907 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9908 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9909 | char *p; |
d471ea57 AC |
9910 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9911 | ||
4082afcc | 9912 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9913 | return -1; |
802188a7 | 9914 | |
28439a30 PA |
9915 | /* Make sure the remote is pointing at the right process, if |
9916 | necessary. */ | |
9917 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9918 | set_general_process (); | |
9919 | ||
bba74b36 | 9920 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9921 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9922 | addr = remote_address_masked (addr); |
9923 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9924 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9925 | putpkt (rs->buf); |
9926 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9927 | |
6d820c5c | 9928 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9929 | { |
9930 | case PACKET_ERROR: | |
9931 | case PACKET_UNKNOWN: | |
9932 | return -1; | |
9933 | case PACKET_OK: | |
9934 | return 0; | |
9935 | } | |
8e65ff28 | 9936 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9937 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9938 | } |
9939 | ||
3c3bea1c | 9940 | |
501eef12 | 9941 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9942 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9943 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9944 | |
480a3f21 | 9945 | static int |
31568a15 TT |
9946 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9947 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9948 | { |
9949 | if (remote_hw_watchpoint_length_limit == 0) | |
9950 | return 0; | |
9951 | else if (remote_hw_watchpoint_length_limit < 0) | |
9952 | return 1; | |
9953 | else if (len <= remote_hw_watchpoint_length_limit) | |
9954 | return 1; | |
9955 | else | |
9956 | return 0; | |
9957 | } | |
9958 | ||
b9362cc7 | 9959 | static int |
5461485a | 9960 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9961 | enum bptype type, int cnt, int ot) |
96baa820 | 9962 | { |
3c3bea1c GS |
9963 | if (type == bp_hardware_breakpoint) |
9964 | { | |
9965 | if (remote_hw_breakpoint_limit == 0) | |
9966 | return 0; | |
501eef12 AC |
9967 | else if (remote_hw_breakpoint_limit < 0) |
9968 | return 1; | |
3c3bea1c GS |
9969 | else if (cnt <= remote_hw_breakpoint_limit) |
9970 | return 1; | |
9971 | } | |
9972 | else | |
9973 | { | |
9974 | if (remote_hw_watchpoint_limit == 0) | |
9975 | return 0; | |
501eef12 AC |
9976 | else if (remote_hw_watchpoint_limit < 0) |
9977 | return 1; | |
3c3bea1c GS |
9978 | else if (ot) |
9979 | return -1; | |
9980 | else if (cnt <= remote_hw_watchpoint_limit) | |
9981 | return 1; | |
9982 | } | |
9983 | return -1; | |
9984 | } | |
9985 | ||
f7e6eed5 PA |
9986 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9987 | ||
9988 | static int | |
9989 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9990 | { | |
799a2abe | 9991 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9992 | |
799a2abe | 9993 | return (thread->priv != NULL |
7aabaf9d SM |
9994 | && (get_remote_thread_info (thread)->stop_reason |
9995 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
9996 | } |
9997 | ||
9998 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9999 | remote. */ | |
10000 | ||
10001 | static int | |
10002 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10003 | { | |
f7e6eed5 PA |
10004 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10005 | } | |
10006 | ||
10007 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10008 | ||
10009 | static int | |
10010 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10011 | { | |
799a2abe | 10012 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10013 | |
799a2abe | 10014 | return (thread->priv != NULL |
7aabaf9d SM |
10015 | && (get_remote_thread_info (thread)->stop_reason |
10016 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10017 | } |
10018 | ||
10019 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10020 | remote. */ | |
10021 | ||
10022 | static int | |
10023 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10024 | { | |
f7e6eed5 PA |
10025 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10026 | } | |
10027 | ||
b9362cc7 | 10028 | static int |
6a109b6b | 10029 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 10030 | { |
799a2abe | 10031 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10032 | |
799a2abe | 10033 | return (thread->priv != NULL |
7aabaf9d SM |
10034 | && (get_remote_thread_info (thread)->stop_reason |
10035 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10036 | } |
10037 | ||
4aa7a7f5 JJ |
10038 | static int |
10039 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 10040 | { |
799a2abe | 10041 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10042 | |
799a2abe | 10043 | if (thread->priv != NULL |
7aabaf9d SM |
10044 | && (get_remote_thread_info (thread)->stop_reason |
10045 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10046 | { |
7aabaf9d | 10047 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
799a2abe | 10048 | return 1; |
4aa7a7f5 JJ |
10049 | } |
10050 | ||
799a2abe | 10051 | return 0; |
3c3bea1c GS |
10052 | } |
10053 | ||
10054 | ||
10055 | static int | |
23a26771 | 10056 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10057 | struct bp_target_info *bp_tgt) |
3c3bea1c | 10058 | { |
0d5ed153 | 10059 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10060 | struct remote_state *rs; |
bba74b36 | 10061 | char *p, *endbuf; |
dd61ec5c | 10062 | char *message; |
3c3bea1c | 10063 | |
4082afcc | 10064 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10065 | return -1; |
2bc416ba | 10066 | |
28439a30 PA |
10067 | /* Make sure the remote is pointing at the right process, if |
10068 | necessary. */ | |
10069 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10070 | set_general_process (); | |
10071 | ||
4fff2411 JZ |
10072 | rs = get_remote_state (); |
10073 | p = rs->buf; | |
bba74b36 | 10074 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10075 | |
96baa820 JM |
10076 | *(p++) = 'Z'; |
10077 | *(p++) = '1'; | |
10078 | *(p++) = ','; | |
802188a7 | 10079 | |
0d5ed153 | 10080 | addr = remote_address_masked (addr); |
96baa820 | 10081 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10082 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10083 | |
efcc2da7 | 10084 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 10085 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10086 | |
78eff0ec | 10087 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
10088 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10089 | ||
6d820c5c DJ |
10090 | putpkt (rs->buf); |
10091 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10092 | |
6d820c5c | 10093 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10094 | { |
10095 | case PACKET_ERROR: | |
dd61ec5c MW |
10096 | if (rs->buf[1] == '.') |
10097 | { | |
10098 | message = strchr (rs->buf + 2, '.'); | |
10099 | if (message) | |
0316657e | 10100 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10101 | } |
10102 | return -1; | |
d471ea57 AC |
10103 | case PACKET_UNKNOWN: |
10104 | return -1; | |
10105 | case PACKET_OK: | |
10106 | return 0; | |
10107 | } | |
8e65ff28 | 10108 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10109 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10110 | } |
10111 | ||
d471ea57 | 10112 | |
802188a7 | 10113 | static int |
a64dc96c | 10114 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10115 | struct bp_target_info *bp_tgt) |
96baa820 | 10116 | { |
8181d85f | 10117 | CORE_ADDR addr; |
d01949b6 | 10118 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10119 | char *p = rs->buf; |
bba74b36 | 10120 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10121 | |
4082afcc | 10122 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10123 | return -1; |
802188a7 | 10124 | |
28439a30 PA |
10125 | /* Make sure the remote is pointing at the right process, if |
10126 | necessary. */ | |
10127 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10128 | set_general_process (); | |
10129 | ||
96baa820 JM |
10130 | *(p++) = 'z'; |
10131 | *(p++) = '1'; | |
10132 | *(p++) = ','; | |
802188a7 | 10133 | |
8181d85f | 10134 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10135 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10136 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10137 | |
6d820c5c DJ |
10138 | putpkt (rs->buf); |
10139 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10140 | |
6d820c5c | 10141 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10142 | { |
10143 | case PACKET_ERROR: | |
10144 | case PACKET_UNKNOWN: | |
10145 | return -1; | |
10146 | case PACKET_OK: | |
10147 | return 0; | |
10148 | } | |
8e65ff28 | 10149 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10150 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10151 | } |
96baa820 | 10152 | |
4a5e7a5b PA |
10153 | /* Verify memory using the "qCRC:" request. */ |
10154 | ||
10155 | static int | |
10156 | remote_verify_memory (struct target_ops *ops, | |
10157 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
10158 | { | |
10159 | struct remote_state *rs = get_remote_state (); | |
10160 | unsigned long host_crc, target_crc; | |
10161 | char *tmp; | |
10162 | ||
936d2992 PA |
10163 | /* It doesn't make sense to use qCRC if the remote target is |
10164 | connected but not running. */ | |
10165 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10166 | { | |
10167 | enum packet_result result; | |
28439a30 | 10168 | |
936d2992 PA |
10169 | /* Make sure the remote is pointing at the right process. */ |
10170 | set_general_process (); | |
4a5e7a5b | 10171 | |
936d2992 PA |
10172 | /* FIXME: assumes lma can fit into long. */ |
10173 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10174 | (long) lma, (long) size); | |
10175 | putpkt (rs->buf); | |
4a5e7a5b | 10176 | |
936d2992 PA |
10177 | /* Be clever; compute the host_crc before waiting for target |
10178 | reply. */ | |
10179 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10180 | ||
10181 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10182 | |
936d2992 PA |
10183 | result = packet_ok (rs->buf, |
10184 | &remote_protocol_packets[PACKET_qCRC]); | |
10185 | if (result == PACKET_ERROR) | |
10186 | return -1; | |
10187 | else if (result == PACKET_OK) | |
10188 | { | |
10189 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10190 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10191 | |
936d2992 PA |
10192 | return (host_crc == target_crc); |
10193 | } | |
10194 | } | |
4a5e7a5b | 10195 | |
936d2992 | 10196 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
10197 | } |
10198 | ||
c906108c SS |
10199 | /* compare-sections command |
10200 | ||
10201 | With no arguments, compares each loadable section in the exec bfd | |
10202 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10203 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10204 | |
c906108c | 10205 | static void |
ac88e2de | 10206 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10207 | { |
10208 | asection *s; | |
ce359b09 | 10209 | const char *sectname; |
c906108c SS |
10210 | bfd_size_type size; |
10211 | bfd_vma lma; | |
10212 | int matched = 0; | |
10213 | int mismatched = 0; | |
4a5e7a5b | 10214 | int res; |
95cf3b38 | 10215 | int read_only = 0; |
c906108c SS |
10216 | |
10217 | if (!exec_bfd) | |
8a3fe4f8 | 10218 | error (_("command cannot be used without an exec file")); |
c906108c | 10219 | |
28439a30 PA |
10220 | /* Make sure the remote is pointing at the right process. */ |
10221 | set_general_process (); | |
10222 | ||
95cf3b38 DT |
10223 | if (args != NULL && strcmp (args, "-r") == 0) |
10224 | { | |
10225 | read_only = 1; | |
10226 | args = NULL; | |
10227 | } | |
10228 | ||
c5aa993b | 10229 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10230 | { |
10231 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10232 | continue; /* Skip non-loadable section. */ |
c906108c | 10233 | |
95cf3b38 DT |
10234 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10235 | continue; /* Skip writeable sections */ | |
10236 | ||
2c500098 | 10237 | size = bfd_get_section_size (s); |
c906108c | 10238 | if (size == 0) |
0df8b418 | 10239 | continue; /* Skip zero-length section. */ |
c906108c | 10240 | |
ce359b09 | 10241 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10242 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10243 | continue; /* Not the section selected by user. */ |
c906108c | 10244 | |
0df8b418 | 10245 | matched = 1; /* Do this section. */ |
c906108c | 10246 | lma = s->lma; |
c906108c | 10247 | |
b80406ac TT |
10248 | gdb::byte_vector sectdata (size); |
10249 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10250 | |
b80406ac | 10251 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10252 | |
10253 | if (res == -1) | |
5af949e3 | 10254 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10255 | paddress (target_gdbarch (), lma), |
10256 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10257 | |
5af949e3 | 10258 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10259 | paddress (target_gdbarch (), lma), |
10260 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10261 | if (res) |
c906108c SS |
10262 | printf_filtered ("matched.\n"); |
10263 | else | |
c5aa993b JM |
10264 | { |
10265 | printf_filtered ("MIS-MATCHED!\n"); | |
10266 | mismatched++; | |
10267 | } | |
c906108c SS |
10268 | } |
10269 | if (mismatched > 0) | |
936d2992 | 10270 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10271 | the loaded file\n")); |
c906108c | 10272 | if (args && !matched) |
a3f17187 | 10273 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10274 | } |
10275 | ||
0e7f50da UW |
10276 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10277 | into remote target. The number of bytes written to the remote | |
10278 | target is returned, or -1 for error. */ | |
10279 | ||
9b409511 | 10280 | static enum target_xfer_status |
0e7f50da UW |
10281 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
10282 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 10283 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10284 | struct packet_config *packet) |
10285 | { | |
10286 | int i, buf_len; | |
10287 | ULONGEST n; | |
0e7f50da UW |
10288 | struct remote_state *rs = get_remote_state (); |
10289 | int max_size = get_memory_write_packet_size (); | |
10290 | ||
7cc244de | 10291 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10292 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10293 | |
10294 | /* Insert header. */ | |
10295 | i = snprintf (rs->buf, max_size, | |
10296 | "qXfer:%s:write:%s:%s:", | |
10297 | object_name, annex ? annex : "", | |
10298 | phex_nz (offset, sizeof offset)); | |
10299 | max_size -= (i + 1); | |
10300 | ||
10301 | /* Escape as much data as fits into rs->buf. */ | |
10302 | buf_len = remote_escape_output | |
124e13d9 | 10303 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10304 | |
10305 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10306 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10307 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10308 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10309 | |
10310 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10311 | |
10312 | *xfered_len = n; | |
92ffd475 | 10313 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10314 | } |
10315 | ||
0876f84a DJ |
10316 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10317 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10318 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10319 | The number of bytes read may be less than LEN without indicating an | |
10320 | EOF. PACKET is checked and updated to indicate whether the remote | |
10321 | target supports this object. */ | |
10322 | ||
9b409511 | 10323 | static enum target_xfer_status |
0876f84a DJ |
10324 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
10325 | const char *annex, | |
10326 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10327 | ULONGEST *xfered_len, |
0876f84a DJ |
10328 | struct packet_config *packet) |
10329 | { | |
0876f84a | 10330 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10331 | LONGEST i, n, packet_len; |
10332 | ||
7cc244de | 10333 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10334 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10335 | |
10336 | /* Check whether we've cached an end-of-object packet that matches | |
10337 | this request. */ | |
8e88304f | 10338 | if (rs->finished_object) |
0876f84a | 10339 | { |
8e88304f TT |
10340 | if (strcmp (object_name, rs->finished_object) == 0 |
10341 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10342 | && offset == rs->finished_offset) | |
9b409511 YQ |
10343 | return TARGET_XFER_EOF; |
10344 | ||
0876f84a DJ |
10345 | |
10346 | /* Otherwise, we're now reading something different. Discard | |
10347 | the cache. */ | |
8e88304f TT |
10348 | xfree (rs->finished_object); |
10349 | xfree (rs->finished_annex); | |
10350 | rs->finished_object = NULL; | |
10351 | rs->finished_annex = NULL; | |
0876f84a DJ |
10352 | } |
10353 | ||
10354 | /* Request only enough to fit in a single packet. The actual data | |
10355 | may not, since we don't know how much of it will need to be escaped; | |
10356 | the target is free to respond with slightly less data. We subtract | |
10357 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10358 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10359 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10360 | object_name, annex ? annex : "", | |
10361 | phex_nz (offset, sizeof offset), | |
10362 | phex_nz (n, sizeof n)); | |
10363 | i = putpkt (rs->buf); | |
10364 | if (i < 0) | |
2ed4b548 | 10365 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10366 | |
10367 | rs->buf[0] = '\0'; | |
10368 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10369 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10370 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10371 | |
10372 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10373 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10374 | ||
10375 | /* 'm' means there is (or at least might be) more data after this | |
10376 | batch. That does not make sense unless there's at least one byte | |
10377 | of data in this reply. */ | |
10378 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10379 | error (_("Remote qXfer reply contained no data.")); | |
10380 | ||
10381 | /* Got some data. */ | |
bc20a4af PA |
10382 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10383 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10384 | |
10385 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10386 | or possibly empty. If we have the final block of a non-empty |
10387 | object, record this fact to bypass a subsequent partial read. */ | |
10388 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10389 | { |
8e88304f TT |
10390 | rs->finished_object = xstrdup (object_name); |
10391 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10392 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10393 | } |
10394 | ||
9b409511 YQ |
10395 | if (i == 0) |
10396 | return TARGET_XFER_EOF; | |
10397 | else | |
10398 | { | |
10399 | *xfered_len = i; | |
10400 | return TARGET_XFER_OK; | |
10401 | } | |
0876f84a DJ |
10402 | } |
10403 | ||
9b409511 | 10404 | static enum target_xfer_status |
4b8a223f | 10405 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 10406 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
10407 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
10408 | ULONGEST *xfered_len) | |
c906108c | 10409 | { |
82f73884 | 10410 | struct remote_state *rs; |
c906108c | 10411 | int i; |
6d820c5c | 10412 | char *p2; |
1e3ff5ad | 10413 | char query_type; |
124e13d9 | 10414 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10415 | |
e6e4e701 | 10416 | set_remote_traceframe (); |
82f73884 PA |
10417 | set_general_thread (inferior_ptid); |
10418 | ||
10419 | rs = get_remote_state (); | |
10420 | ||
b2182ed2 | 10421 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10422 | if (object == TARGET_OBJECT_MEMORY) |
10423 | { | |
2d717e4f DJ |
10424 | /* If the remote target is connected but not running, we should |
10425 | pass this request down to a lower stratum (e.g. the executable | |
10426 | file). */ | |
10427 | if (!target_has_execution) | |
9b409511 | 10428 | return TARGET_XFER_EOF; |
2d717e4f | 10429 | |
21e3b9b9 | 10430 | if (writebuf != NULL) |
124e13d9 SM |
10431 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10432 | xfered_len); | |
21e3b9b9 | 10433 | else |
124e13d9 SM |
10434 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
10435 | xfered_len); | |
21e3b9b9 DJ |
10436 | } |
10437 | ||
0df8b418 | 10438 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10439 | if (object == TARGET_OBJECT_SPU) |
10440 | { | |
10441 | if (readbuf) | |
10442 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
10443 | xfered_len, &remote_protocol_packets |
10444 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
10445 | else |
10446 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
10447 | xfered_len, &remote_protocol_packets |
10448 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10449 | } |
10450 | ||
4aa995e1 PA |
10451 | /* Handle extra signal info using qxfer packets. */ |
10452 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10453 | { | |
10454 | if (readbuf) | |
10455 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10456 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10457 | [PACKET_qXfer_siginfo_read]); |
10458 | else | |
3e43a32a | 10459 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10460 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10461 | &remote_protocol_packets |
10462 | [PACKET_qXfer_siginfo_write]); | |
10463 | } | |
10464 | ||
0fb4aa4b PA |
10465 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10466 | { | |
10467 | if (readbuf) | |
3e43a32a | 10468 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10469 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10470 | &remote_protocol_packets |
10471 | [PACKET_qXfer_statictrace_read]); | |
10472 | else | |
2ed4b548 | 10473 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10474 | } |
10475 | ||
a76d924d DJ |
10476 | /* Only handle flash writes. */ |
10477 | if (writebuf != NULL) | |
10478 | { | |
a76d924d DJ |
10479 | switch (object) |
10480 | { | |
10481 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10482 | return remote_flash_write (ops, offset, len, xfered_len, |
10483 | writebuf); | |
a76d924d DJ |
10484 | |
10485 | default: | |
2ed4b548 | 10486 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10487 | } |
10488 | } | |
4b8a223f | 10489 | |
1e3ff5ad AC |
10490 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10491 | objects!!! Instead specify new query packets. */ | |
10492 | switch (object) | |
c906108c | 10493 | { |
1e3ff5ad AC |
10494 | case TARGET_OBJECT_AVR: |
10495 | query_type = 'R'; | |
10496 | break; | |
802188a7 RM |
10497 | |
10498 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10499 | gdb_assert (annex == NULL); |
10500 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10501 | xfered_len, |
0876f84a | 10502 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10503 | |
23181151 DJ |
10504 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10505 | return remote_read_qxfer | |
9b409511 | 10506 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10507 | &remote_protocol_packets[PACKET_qXfer_features]); |
10508 | ||
cfa9d6d9 DJ |
10509 | case TARGET_OBJECT_LIBRARIES: |
10510 | return remote_read_qxfer | |
9b409511 | 10511 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10512 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10513 | ||
2268b414 JK |
10514 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10515 | return remote_read_qxfer | |
9b409511 | 10516 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10517 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10518 | ||
fd79ecee DJ |
10519 | case TARGET_OBJECT_MEMORY_MAP: |
10520 | gdb_assert (annex == NULL); | |
10521 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10522 | xfered_len, |
fd79ecee DJ |
10523 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10524 | ||
07e059b5 VP |
10525 | case TARGET_OBJECT_OSDATA: |
10526 | /* Should only get here if we're connected. */ | |
5d93a237 | 10527 | gdb_assert (rs->remote_desc); |
07e059b5 | 10528 | return remote_read_qxfer |
9b409511 | 10529 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10530 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10531 | ||
dc146f7c VP |
10532 | case TARGET_OBJECT_THREADS: |
10533 | gdb_assert (annex == NULL); | |
10534 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10535 | xfered_len, |
dc146f7c VP |
10536 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10537 | ||
b3b9301e PA |
10538 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10539 | gdb_assert (annex == NULL); | |
10540 | return remote_read_qxfer | |
9b409511 | 10541 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10542 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10543 | |
10544 | case TARGET_OBJECT_FDPIC: | |
10545 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10546 | xfered_len, |
78d85199 | 10547 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10548 | |
10549 | case TARGET_OBJECT_OPENVMS_UIB: | |
10550 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10551 | xfered_len, |
169081d0 TG |
10552 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10553 | ||
9accd112 MM |
10554 | case TARGET_OBJECT_BTRACE: |
10555 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10556 | xfered_len, |
9accd112 MM |
10557 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10558 | ||
f4abbc16 MM |
10559 | case TARGET_OBJECT_BTRACE_CONF: |
10560 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10561 | len, xfered_len, | |
10562 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10563 | ||
c78fa86a GB |
10564 | case TARGET_OBJECT_EXEC_FILE: |
10565 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10566 | len, xfered_len, | |
10567 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10568 | ||
1e3ff5ad | 10569 | default: |
2ed4b548 | 10570 | return TARGET_XFER_E_IO; |
c906108c SS |
10571 | } |
10572 | ||
0df8b418 | 10573 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10574 | large enough let the caller deal with it. */ |
ea9c271d | 10575 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10576 | return TARGET_XFER_E_IO; |
ea9c271d | 10577 | len = get_remote_packet_size (); |
1e3ff5ad | 10578 | |
23860348 | 10579 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10580 | if (!rs->remote_desc) |
8a3fe4f8 | 10581 | error (_("remote query is only available after target open")); |
c906108c | 10582 | |
1e3ff5ad | 10583 | gdb_assert (annex != NULL); |
4b8a223f | 10584 | gdb_assert (readbuf != NULL); |
c906108c | 10585 | |
6d820c5c | 10586 | p2 = rs->buf; |
c906108c SS |
10587 | *p2++ = 'q'; |
10588 | *p2++ = query_type; | |
10589 | ||
23860348 MS |
10590 | /* We used one buffer char for the remote protocol q command and |
10591 | another for the query type. As the remote protocol encapsulation | |
10592 | uses 4 chars plus one extra in case we are debugging | |
10593 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10594 | string. */ | |
c906108c | 10595 | i = 0; |
ea9c271d | 10596 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10597 | { |
1e3ff5ad AC |
10598 | /* Bad caller may have sent forbidden characters. */ |
10599 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10600 | *p2++ = annex[i]; | |
c906108c SS |
10601 | i++; |
10602 | } | |
1e3ff5ad AC |
10603 | *p2 = '\0'; |
10604 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10605 | |
6d820c5c | 10606 | i = putpkt (rs->buf); |
c5aa993b | 10607 | if (i < 0) |
2ed4b548 | 10608 | return TARGET_XFER_E_IO; |
c906108c | 10609 | |
6d820c5c DJ |
10610 | getpkt (&rs->buf, &rs->buf_size, 0); |
10611 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10612 | |
9b409511 | 10613 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 10614 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
10615 | } |
10616 | ||
09c98b44 DB |
10617 | /* Implementation of to_get_memory_xfer_limit. */ |
10618 | ||
10619 | static ULONGEST | |
10620 | remote_get_memory_xfer_limit (struct target_ops *ops) | |
10621 | { | |
10622 | return get_memory_write_packet_size (); | |
10623 | } | |
10624 | ||
08388c79 DE |
10625 | static int |
10626 | remote_search_memory (struct target_ops* ops, | |
10627 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10628 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10629 | CORE_ADDR *found_addrp) | |
10630 | { | |
f5656ead | 10631 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10632 | struct remote_state *rs = get_remote_state (); |
10633 | int max_size = get_memory_write_packet_size (); | |
10634 | struct packet_config *packet = | |
10635 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10636 | /* Number of packet bytes used to encode the pattern; |
10637 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10638 | int escaped_pattern_len; |
0df8b418 | 10639 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10640 | int used_pattern_len; |
10641 | int i; | |
10642 | int found; | |
10643 | ULONGEST found_addr; | |
10644 | ||
7cc244de PA |
10645 | /* Don't go to the target if we don't have to. This is done before |
10646 | checking packet_config_support to avoid the possibility that a | |
10647 | success for this edge case means the facility works in | |
10648 | general. */ | |
08388c79 DE |
10649 | if (pattern_len > search_space_len) |
10650 | return 0; | |
10651 | if (pattern_len == 0) | |
10652 | { | |
10653 | *found_addrp = start_addr; | |
10654 | return 1; | |
10655 | } | |
10656 | ||
10657 | /* If we already know the packet isn't supported, fall back to the simple | |
10658 | way of searching memory. */ | |
10659 | ||
4082afcc | 10660 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10661 | { |
10662 | /* Target doesn't provided special support, fall back and use the | |
10663 | standard support (copy memory and do the search here). */ | |
10664 | return simple_search_memory (ops, start_addr, search_space_len, | |
10665 | pattern, pattern_len, found_addrp); | |
10666 | } | |
10667 | ||
28439a30 PA |
10668 | /* Make sure the remote is pointing at the right process. */ |
10669 | set_general_process (); | |
10670 | ||
08388c79 DE |
10671 | /* Insert header. */ |
10672 | i = snprintf (rs->buf, max_size, | |
10673 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10674 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10675 | phex_nz (search_space_len, sizeof (search_space_len))); |
10676 | max_size -= (i + 1); | |
10677 | ||
10678 | /* Escape as much data as fits into rs->buf. */ | |
10679 | escaped_pattern_len = | |
124e13d9 | 10680 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10681 | &used_pattern_len, max_size); |
10682 | ||
10683 | /* Bail if the pattern is too large. */ | |
10684 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10685 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10686 | |
10687 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10688 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10689 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10690 | { | |
10691 | /* The request may not have worked because the command is not | |
10692 | supported. If so, fall back to the simple way. */ | |
7cc244de | 10693 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10694 | { |
10695 | return simple_search_memory (ops, start_addr, search_space_len, | |
10696 | pattern, pattern_len, found_addrp); | |
10697 | } | |
10698 | return -1; | |
10699 | } | |
10700 | ||
10701 | if (rs->buf[0] == '0') | |
10702 | found = 0; | |
10703 | else if (rs->buf[0] == '1') | |
10704 | { | |
10705 | found = 1; | |
10706 | if (rs->buf[1] != ',') | |
10e0fa18 | 10707 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10708 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10709 | *found_addrp = found_addr; | |
10710 | } | |
10711 | else | |
10e0fa18 | 10712 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10713 | |
10714 | return found; | |
10715 | } | |
10716 | ||
96baa820 | 10717 | static void |
a30bf1f1 | 10718 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10719 | struct ui_file *outbuf) |
96baa820 | 10720 | { |
d01949b6 | 10721 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10722 | char *p = rs->buf; |
96baa820 | 10723 | |
5d93a237 | 10724 | if (!rs->remote_desc) |
8a3fe4f8 | 10725 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10726 | |
23860348 | 10727 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10728 | if (command == NULL) |
10729 | command = ""; | |
10730 | ||
23860348 | 10731 | /* The query prefix. */ |
2e9f7625 DJ |
10732 | strcpy (rs->buf, "qRcmd,"); |
10733 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10734 | |
3e43a32a MS |
10735 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10736 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10737 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10738 | |
23860348 | 10739 | /* Encode the actual command. */ |
a30bf1f1 | 10740 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10741 | |
6d820c5c | 10742 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10743 | error (_("Communication problem with target.")); |
96baa820 JM |
10744 | |
10745 | /* get/display the response */ | |
10746 | while (1) | |
10747 | { | |
2e9f7625 DJ |
10748 | char *buf; |
10749 | ||
00bf0b85 | 10750 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10751 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10752 | rs->buf[0] = '\0'; |
5b37825d PW |
10753 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10754 | { | |
10755 | /* Timeout. Continue to (try to) read responses. | |
10756 | This is better than stopping with an error, assuming the stub | |
10757 | is still executing the (long) monitor command. | |
10758 | If needed, the user can interrupt gdb using C-c, obtaining | |
10759 | an effect similar to stop on timeout. */ | |
10760 | continue; | |
10761 | } | |
2e9f7625 | 10762 | buf = rs->buf; |
96baa820 | 10763 | if (buf[0] == '\0') |
8a3fe4f8 | 10764 | error (_("Target does not support this command.")); |
96baa820 JM |
10765 | if (buf[0] == 'O' && buf[1] != 'K') |
10766 | { | |
23860348 | 10767 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10768 | continue; |
10769 | } | |
10770 | if (strcmp (buf, "OK") == 0) | |
10771 | break; | |
7be570e7 JM |
10772 | if (strlen (buf) == 3 && buf[0] == 'E' |
10773 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10774 | { | |
8a3fe4f8 | 10775 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10776 | } |
96baa820 JM |
10777 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10778 | { | |
10779 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10780 | |
96baa820 JM |
10781 | fputc_unfiltered (c, outbuf); |
10782 | } | |
10783 | break; | |
10784 | } | |
10785 | } | |
10786 | ||
a664f67e | 10787 | static std::vector<mem_region> |
fd79ecee DJ |
10788 | remote_memory_map (struct target_ops *ops) |
10789 | { | |
a664f67e | 10790 | std::vector<mem_region> result; |
9018be22 | 10791 | gdb::optional<gdb::char_vector> text |
b7b030ad | 10792 | = target_read_stralloc (¤t_target, TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
10793 | |
10794 | if (text) | |
9018be22 | 10795 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
10796 | |
10797 | return result; | |
10798 | } | |
10799 | ||
c906108c | 10800 | static void |
ac88e2de | 10801 | packet_command (const char *args, int from_tty) |
c906108c | 10802 | { |
d01949b6 | 10803 | struct remote_state *rs = get_remote_state (); |
c906108c | 10804 | |
5d93a237 | 10805 | if (!rs->remote_desc) |
8a3fe4f8 | 10806 | error (_("command can only be used with remote target")); |
c906108c | 10807 | |
c5aa993b | 10808 | if (!args) |
8a3fe4f8 | 10809 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10810 | |
10811 | puts_filtered ("sending: "); | |
10812 | print_packet (args); | |
10813 | puts_filtered ("\n"); | |
10814 | putpkt (args); | |
10815 | ||
6d820c5c | 10816 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10817 | puts_filtered ("received: "); |
6d820c5c | 10818 | print_packet (rs->buf); |
c906108c SS |
10819 | puts_filtered ("\n"); |
10820 | } | |
10821 | ||
10822 | #if 0 | |
23860348 | 10823 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10824 | |
a14ed312 | 10825 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10826 | |
a14ed312 | 10827 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10828 | |
a14ed312 | 10829 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10830 | |
a14ed312 | 10831 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10832 | |
23860348 | 10833 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10834 | |
a14ed312 | 10835 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10836 | |
23860348 | 10837 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10838 | |
a14ed312 | 10839 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10840 | |
a14ed312 | 10841 | static void init_remote_threadtests (void); |
c906108c | 10842 | |
23860348 | 10843 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10844 | |
10845 | static void | |
0b39b52e | 10846 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
10847 | { |
10848 | int sample_thread = SAMPLE_THREAD; | |
10849 | ||
a3f17187 | 10850 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10851 | set_general_thread (sample_thread); |
c906108c SS |
10852 | } |
10853 | ||
10854 | ||
10855 | static void | |
0b39b52e | 10856 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
10857 | { |
10858 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10859 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10860 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10861 | |
79d7f229 | 10862 | if (remote_thread_alive (ptid)) |
c906108c SS |
10863 | printf_filtered ("PASS: Thread alive test\n"); |
10864 | else | |
10865 | printf_filtered ("FAIL: Thread alive test\n"); | |
10866 | } | |
10867 | ||
23860348 | 10868 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10869 | |
10870 | void | |
fba45db2 | 10871 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10872 | { |
10873 | char hexid[20]; | |
10874 | ||
23860348 | 10875 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10876 | hexid[16] = 0; |
10877 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10878 | } | |
10879 | ||
10880 | static void | |
0b39b52e | 10881 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
10882 | { |
10883 | int startflag = 1; | |
10884 | threadref nextthread; | |
10885 | int done, result_count; | |
10886 | threadref threadlist[3]; | |
10887 | ||
10888 | printf_filtered ("Remote Threadlist test\n"); | |
10889 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10890 | &result_count, &threadlist[0])) | |
10891 | printf_filtered ("FAIL: threadlist test\n"); | |
10892 | else | |
10893 | { | |
10894 | threadref *scan = threadlist; | |
10895 | threadref *limit = scan + result_count; | |
10896 | ||
10897 | while (scan < limit) | |
10898 | output_threadid (" thread ", scan++); | |
10899 | } | |
10900 | } | |
10901 | ||
10902 | void | |
fba45db2 | 10903 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10904 | { |
10905 | output_threadid ("Threadid: ", &info->threadid); | |
10906 | printf_filtered ("Name: %s\n ", info->shortname); | |
10907 | printf_filtered ("State: %s\n", info->display); | |
10908 | printf_filtered ("other: %s\n\n", info->more_display); | |
10909 | } | |
10910 | ||
10911 | int | |
fba45db2 | 10912 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10913 | { |
10914 | int result; | |
10915 | int set; | |
10916 | struct gdb_ext_thread_info threadinfo; | |
10917 | ||
10918 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10919 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10920 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10921 | display_thread_info (&threadinfo); | |
10922 | return result; | |
10923 | } | |
10924 | ||
10925 | static void | |
0b39b52e | 10926 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
10927 | { |
10928 | int athread = SAMPLE_THREAD; | |
10929 | threadref thread; | |
10930 | int set; | |
10931 | ||
10932 | int_to_threadref (&thread, athread); | |
10933 | printf_filtered ("Remote Threadinfo test\n"); | |
10934 | if (!get_and_display_threadinfo (&thread)) | |
10935 | printf_filtered ("FAIL cannot get thread info\n"); | |
10936 | } | |
10937 | ||
10938 | static int | |
fba45db2 | 10939 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10940 | { |
10941 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10942 | return get_and_display_threadinfo (ref); | |
10943 | } | |
10944 | ||
10945 | static void | |
0b39b52e | 10946 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
10947 | { |
10948 | printf_filtered ("Remote Threadlist update test\n"); | |
10949 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10950 | } | |
10951 | ||
10952 | static void | |
10953 | init_remote_threadtests (void) | |
10954 | { | |
3e43a32a MS |
10955 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10956 | _("Fetch and print the remote list of " | |
10957 | "thread identifiers, one pkt only")); | |
c906108c | 10958 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10959 | _("Fetch and display info about one thread")); |
c906108c | 10960 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10961 | _("Test setting to a different thread")); |
c906108c | 10962 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10963 | _("Iterate through updating all remote thread info")); |
c906108c | 10964 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10965 | _(" Remote thread alive test ")); |
c906108c SS |
10966 | } |
10967 | ||
10968 | #endif /* 0 */ | |
10969 | ||
f3fb8c85 MS |
10970 | /* Convert a thread ID to a string. Returns the string in a static |
10971 | buffer. */ | |
10972 | ||
7a114964 | 10973 | static const char * |
117de6a9 | 10974 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10975 | { |
79d7f229 | 10976 | static char buf[64]; |
82f73884 | 10977 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10978 | |
7cee1e54 PA |
10979 | if (ptid_equal (ptid, null_ptid)) |
10980 | return normal_pid_to_str (ptid); | |
10981 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10982 | { |
10983 | /* Printing an inferior target id. */ | |
10984 | ||
10985 | /* When multi-process extensions are off, there's no way in the | |
10986 | remote protocol to know the remote process id, if there's any | |
10987 | at all. There's one exception --- when we're connected with | |
10988 | target extended-remote, and we manually attached to a process | |
10989 | with "attach PID". We don't record anywhere a flag that | |
10990 | allows us to distinguish that case from the case of | |
10991 | connecting with extended-remote and the stub already being | |
10992 | attached to a process, and reporting yes to qAttached, hence | |
10993 | no smart special casing here. */ | |
10994 | if (!remote_multi_process_p (rs)) | |
10995 | { | |
10996 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10997 | return buf; | |
10998 | } | |
10999 | ||
11000 | return normal_pid_to_str (ptid); | |
82f73884 | 11001 | } |
ecd0ada5 | 11002 | else |
79d7f229 | 11003 | { |
ecd0ada5 PA |
11004 | if (ptid_equal (magic_null_ptid, ptid)) |
11005 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11006 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11007 | if (ptid_get_lwp (ptid) == 0) |
11008 | return normal_pid_to_str (ptid); | |
11009 | else | |
11010 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11011 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11012 | else |
11013 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11014 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11015 | return buf; |
11016 | } | |
f3fb8c85 MS |
11017 | } |
11018 | ||
38691318 KB |
11019 | /* Get the address of the thread local variable in OBJFILE which is |
11020 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11021 | ||
11022 | static CORE_ADDR | |
117de6a9 PA |
11023 | remote_get_thread_local_address (struct target_ops *ops, |
11024 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 11025 | { |
4082afcc | 11026 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11027 | { |
11028 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11029 | char *p = rs->buf; |
82f73884 | 11030 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11031 | enum packet_result result; |
38691318 KB |
11032 | |
11033 | strcpy (p, "qGetTLSAddr:"); | |
11034 | p += strlen (p); | |
82f73884 | 11035 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11036 | *p++ = ','; |
11037 | p += hexnumstr (p, offset); | |
11038 | *p++ = ','; | |
11039 | p += hexnumstr (p, lm); | |
11040 | *p++ = '\0'; | |
11041 | ||
6d820c5c DJ |
11042 | putpkt (rs->buf); |
11043 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11044 | result = packet_ok (rs->buf, |
11045 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11046 | if (result == PACKET_OK) |
38691318 KB |
11047 | { |
11048 | ULONGEST result; | |
11049 | ||
6d820c5c | 11050 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11051 | return result; |
11052 | } | |
571dd617 | 11053 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11054 | throw_error (TLS_GENERIC_ERROR, |
11055 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11056 | else |
109c3e39 AC |
11057 | throw_error (TLS_GENERIC_ERROR, |
11058 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11059 | } |
11060 | else | |
109c3e39 AC |
11061 | throw_error (TLS_GENERIC_ERROR, |
11062 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11063 | /* Not reached. */ |
11064 | return 0; | |
11065 | } | |
11066 | ||
711e434b PM |
11067 | /* Provide thread local base, i.e. Thread Information Block address. |
11068 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11069 | ||
70221824 | 11070 | static int |
bd7ae0f5 | 11071 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11072 | { |
4082afcc | 11073 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11074 | { |
11075 | struct remote_state *rs = get_remote_state (); | |
11076 | char *p = rs->buf; | |
11077 | char *endp = rs->buf + get_remote_packet_size (); | |
11078 | enum packet_result result; | |
11079 | ||
11080 | strcpy (p, "qGetTIBAddr:"); | |
11081 | p += strlen (p); | |
11082 | p = write_ptid (p, endp, ptid); | |
11083 | *p++ = '\0'; | |
11084 | ||
11085 | putpkt (rs->buf); | |
11086 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11087 | result = packet_ok (rs->buf, | |
11088 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11089 | if (result == PACKET_OK) | |
11090 | { | |
11091 | ULONGEST result; | |
11092 | ||
11093 | unpack_varlen_hex (rs->buf, &result); | |
11094 | if (addr) | |
11095 | *addr = (CORE_ADDR) result; | |
11096 | return 1; | |
11097 | } | |
11098 | else if (result == PACKET_UNKNOWN) | |
11099 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11100 | else | |
11101 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11102 | } | |
11103 | else | |
11104 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11105 | /* Not reached. */ | |
11106 | return 0; | |
11107 | } | |
11108 | ||
29709017 DJ |
11109 | /* Support for inferring a target description based on the current |
11110 | architecture and the size of a 'g' packet. While the 'g' packet | |
11111 | can have any size (since optional registers can be left off the | |
11112 | end), some sizes are easily recognizable given knowledge of the | |
11113 | approximate architecture. */ | |
11114 | ||
11115 | struct remote_g_packet_guess | |
11116 | { | |
11117 | int bytes; | |
11118 | const struct target_desc *tdesc; | |
11119 | }; | |
11120 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11121 | DEF_VEC_O(remote_g_packet_guess_s); | |
11122 | ||
11123 | struct remote_g_packet_data | |
11124 | { | |
11125 | VEC(remote_g_packet_guess_s) *guesses; | |
11126 | }; | |
11127 | ||
11128 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11129 | ||
11130 | static void * | |
11131 | remote_g_packet_data_init (struct obstack *obstack) | |
11132 | { | |
11133 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11134 | } | |
11135 | ||
11136 | void | |
11137 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11138 | const struct target_desc *tdesc) | |
11139 | { | |
11140 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11141 | = ((struct remote_g_packet_data *) |
11142 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11143 | struct remote_g_packet_guess new_guess, *guess; |
11144 | int ix; | |
11145 | ||
11146 | gdb_assert (tdesc != NULL); | |
11147 | ||
11148 | for (ix = 0; | |
11149 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11150 | ix++) | |
11151 | if (guess->bytes == bytes) | |
11152 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11153 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11154 | bytes); |
11155 | ||
11156 | new_guess.bytes = bytes; | |
11157 | new_guess.tdesc = tdesc; | |
11158 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11159 | } | |
11160 | ||
d962ef82 DJ |
11161 | /* Return 1 if remote_read_description would do anything on this target |
11162 | and architecture, 0 otherwise. */ | |
11163 | ||
11164 | static int | |
11165 | remote_read_description_p (struct target_ops *target) | |
11166 | { | |
11167 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11168 | = ((struct remote_g_packet_data *) |
11169 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11170 | |
11171 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11172 | return 1; | |
11173 | ||
11174 | return 0; | |
11175 | } | |
11176 | ||
29709017 DJ |
11177 | static const struct target_desc * |
11178 | remote_read_description (struct target_ops *target) | |
11179 | { | |
11180 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11181 | = ((struct remote_g_packet_data *) |
11182 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11183 | |
d962ef82 DJ |
11184 | /* Do not try this during initial connection, when we do not know |
11185 | whether there is a running but stopped thread. */ | |
11186 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 11187 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 11188 | |
29709017 DJ |
11189 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11190 | { | |
11191 | struct remote_g_packet_guess *guess; | |
11192 | int ix; | |
11193 | int bytes = send_g_packet (); | |
11194 | ||
11195 | for (ix = 0; | |
11196 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11197 | ix++) | |
11198 | if (guess->bytes == bytes) | |
11199 | return guess->tdesc; | |
11200 | ||
11201 | /* We discard the g packet. A minor optimization would be to | |
11202 | hold on to it, and fill the register cache once we have selected | |
11203 | an architecture, but it's too tricky to do safely. */ | |
11204 | } | |
11205 | ||
2117c711 | 11206 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
11207 | } |
11208 | ||
a6b151f1 DJ |
11209 | /* Remote file transfer support. This is host-initiated I/O, not |
11210 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11211 | ||
11212 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11213 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11214 | decrease *LEFT. Otherwise raise an error. */ | |
11215 | ||
11216 | static void | |
a121b7c1 | 11217 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11218 | { |
11219 | int len = strlen (string); | |
11220 | ||
11221 | if (len > *left) | |
11222 | error (_("Packet too long for target.")); | |
11223 | ||
11224 | memcpy (*buffer, string, len); | |
11225 | *buffer += len; | |
11226 | *left -= len; | |
11227 | ||
11228 | /* NUL-terminate the buffer as a convenience, if there is | |
11229 | room. */ | |
11230 | if (*left) | |
11231 | **buffer = '\0'; | |
11232 | } | |
11233 | ||
11234 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11235 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11236 | decrease *LEFT. Otherwise raise an error. */ | |
11237 | ||
11238 | static void | |
11239 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11240 | int len) | |
11241 | { | |
11242 | if (2 * len > *left) | |
11243 | error (_("Packet too long for target.")); | |
11244 | ||
11245 | bin2hex (bytes, *buffer, len); | |
11246 | *buffer += 2 * len; | |
11247 | *left -= 2 * len; | |
11248 | ||
11249 | /* NUL-terminate the buffer as a convenience, if there is | |
11250 | room. */ | |
11251 | if (*left) | |
11252 | **buffer = '\0'; | |
11253 | } | |
11254 | ||
11255 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11256 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11257 | decrease *LEFT. Otherwise raise an error. */ | |
11258 | ||
11259 | static void | |
11260 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11261 | { | |
11262 | int len = hexnumlen (value); | |
11263 | ||
11264 | if (len > *left) | |
11265 | error (_("Packet too long for target.")); | |
11266 | ||
11267 | hexnumstr (*buffer, value); | |
11268 | *buffer += len; | |
11269 | *left -= len; | |
11270 | ||
11271 | /* NUL-terminate the buffer as a convenience, if there is | |
11272 | room. */ | |
11273 | if (*left) | |
11274 | **buffer = '\0'; | |
11275 | } | |
11276 | ||
11277 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11278 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11279 | was included, and *ATTACHMENT to point to the start of the annex | |
11280 | if any. The length of the packet isn't needed here; there may | |
11281 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11282 | ||
11283 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11284 | -1 is returned, the other variables may not be initialized. */ | |
11285 | ||
11286 | static int | |
11287 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11288 | int *remote_errno, char **attachment) | |
11289 | { | |
11290 | char *p, *p2; | |
11291 | ||
11292 | *remote_errno = 0; | |
11293 | *attachment = NULL; | |
11294 | ||
11295 | if (buffer[0] != 'F') | |
11296 | return -1; | |
11297 | ||
11298 | errno = 0; | |
11299 | *retcode = strtol (&buffer[1], &p, 16); | |
11300 | if (errno != 0 || p == &buffer[1]) | |
11301 | return -1; | |
11302 | ||
11303 | /* Check for ",errno". */ | |
11304 | if (*p == ',') | |
11305 | { | |
11306 | errno = 0; | |
11307 | *remote_errno = strtol (p + 1, &p2, 16); | |
11308 | if (errno != 0 || p + 1 == p2) | |
11309 | return -1; | |
11310 | p = p2; | |
11311 | } | |
11312 | ||
11313 | /* Check for ";attachment". If there is no attachment, the | |
11314 | packet should end here. */ | |
11315 | if (*p == ';') | |
11316 | { | |
11317 | *attachment = p + 1; | |
11318 | return 0; | |
11319 | } | |
11320 | else if (*p == '\0') | |
11321 | return 0; | |
11322 | else | |
11323 | return -1; | |
11324 | } | |
11325 | ||
11326 | /* Send a prepared I/O packet to the target and read its response. | |
11327 | The prepared packet is in the global RS->BUF before this function | |
11328 | is called, and the answer is there when we return. | |
11329 | ||
11330 | COMMAND_BYTES is the length of the request to send, which may include | |
11331 | binary data. WHICH_PACKET is the packet configuration to check | |
11332 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11333 | is set to the error number and -1 is returned. Otherwise the value | |
11334 | returned by the function is returned. | |
11335 | ||
11336 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11337 | attachment is expected; an error will be reported if there's a | |
11338 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11339 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11340 | attachment's length. */ | |
11341 | ||
11342 | static int | |
11343 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11344 | int *remote_errno, char **attachment, | |
11345 | int *attachment_len) | |
11346 | { | |
11347 | struct remote_state *rs = get_remote_state (); | |
11348 | int ret, bytes_read; | |
11349 | char *attachment_tmp; | |
11350 | ||
20db9c52 | 11351 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11352 | { |
11353 | *remote_errno = FILEIO_ENOSYS; | |
11354 | return -1; | |
11355 | } | |
11356 | ||
11357 | putpkt_binary (rs->buf, command_bytes); | |
11358 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11359 | ||
11360 | /* If it timed out, something is wrong. Don't try to parse the | |
11361 | buffer. */ | |
11362 | if (bytes_read < 0) | |
11363 | { | |
11364 | *remote_errno = FILEIO_EINVAL; | |
11365 | return -1; | |
11366 | } | |
11367 | ||
11368 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11369 | { | |
11370 | case PACKET_ERROR: | |
11371 | *remote_errno = FILEIO_EINVAL; | |
11372 | return -1; | |
11373 | case PACKET_UNKNOWN: | |
11374 | *remote_errno = FILEIO_ENOSYS; | |
11375 | return -1; | |
11376 | case PACKET_OK: | |
11377 | break; | |
11378 | } | |
11379 | ||
11380 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11381 | &attachment_tmp)) | |
11382 | { | |
11383 | *remote_errno = FILEIO_EINVAL; | |
11384 | return -1; | |
11385 | } | |
11386 | ||
11387 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11388 | if ((attachment_tmp == NULL && attachment != NULL) | |
11389 | || (attachment_tmp != NULL && attachment == NULL)) | |
11390 | { | |
11391 | *remote_errno = FILEIO_EINVAL; | |
11392 | return -1; | |
11393 | } | |
11394 | ||
11395 | /* If an attachment was found, it must point into the packet buffer; | |
11396 | work out how many bytes there were. */ | |
11397 | if (attachment_tmp != NULL) | |
11398 | { | |
11399 | *attachment = attachment_tmp; | |
11400 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11401 | } | |
11402 | ||
11403 | return ret; | |
11404 | } | |
11405 | ||
80152258 PA |
11406 | /* Invalidate the readahead cache. */ |
11407 | ||
11408 | static void | |
11409 | readahead_cache_invalidate (void) | |
11410 | { | |
11411 | struct remote_state *rs = get_remote_state (); | |
11412 | ||
11413 | rs->readahead_cache.fd = -1; | |
11414 | } | |
11415 | ||
11416 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
11417 | ||
11418 | static void | |
11419 | readahead_cache_invalidate_fd (int fd) | |
11420 | { | |
11421 | struct remote_state *rs = get_remote_state (); | |
11422 | ||
11423 | if (rs->readahead_cache.fd == fd) | |
11424 | rs->readahead_cache.fd = -1; | |
11425 | } | |
11426 | ||
15a201c8 GB |
11427 | /* Set the filesystem remote_hostio functions that take FILENAME |
11428 | arguments will use. Return 0 on success, or -1 if an error | |
11429 | occurs (and set *REMOTE_ERRNO). */ | |
11430 | ||
11431 | static int | |
11432 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11433 | { | |
11434 | struct remote_state *rs = get_remote_state (); | |
11435 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11436 | char *p = rs->buf; | |
11437 | int left = get_remote_packet_size () - 1; | |
11438 | char arg[9]; | |
11439 | int ret; | |
11440 | ||
11441 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11442 | return 0; | |
11443 | ||
11444 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11445 | return 0; | |
11446 | ||
11447 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11448 | ||
11449 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11450 | remote_buffer_add_string (&p, &left, arg); | |
11451 | ||
11452 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11453 | remote_errno, NULL, NULL); | |
11454 | ||
11455 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11456 | return 0; | |
11457 | ||
11458 | if (ret == 0) | |
11459 | rs->fs_pid = required_pid; | |
11460 | ||
11461 | return ret; | |
11462 | } | |
11463 | ||
12e2a5fd | 11464 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11465 | |
11466 | static int | |
cd897586 | 11467 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11468 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11469 | int flags, int mode, int warn_if_slow, |
11470 | int *remote_errno) | |
a6b151f1 DJ |
11471 | { |
11472 | struct remote_state *rs = get_remote_state (); | |
11473 | char *p = rs->buf; | |
11474 | int left = get_remote_packet_size () - 1; | |
11475 | ||
4313b8c0 GB |
11476 | if (warn_if_slow) |
11477 | { | |
11478 | static int warning_issued = 0; | |
11479 | ||
11480 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11481 | filename); | |
11482 | ||
11483 | if (!warning_issued) | |
11484 | { | |
11485 | warning (_("File transfers from remote targets can be slow." | |
11486 | " Use \"set sysroot\" to access files locally" | |
11487 | " instead.")); | |
11488 | warning_issued = 1; | |
11489 | } | |
11490 | } | |
11491 | ||
15a201c8 GB |
11492 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11493 | return -1; | |
11494 | ||
a6b151f1 DJ |
11495 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11496 | ||
11497 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11498 | strlen (filename)); | |
11499 | remote_buffer_add_string (&p, &left, ","); | |
11500 | ||
11501 | remote_buffer_add_int (&p, &left, flags); | |
11502 | remote_buffer_add_string (&p, &left, ","); | |
11503 | ||
11504 | remote_buffer_add_int (&p, &left, mode); | |
11505 | ||
11506 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11507 | remote_errno, NULL, NULL); | |
11508 | } | |
11509 | ||
12e2a5fd | 11510 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11511 | |
11512 | static int | |
0d866f62 TT |
11513 | remote_hostio_pwrite (struct target_ops *self, |
11514 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11515 | ULONGEST offset, int *remote_errno) |
11516 | { | |
11517 | struct remote_state *rs = get_remote_state (); | |
11518 | char *p = rs->buf; | |
11519 | int left = get_remote_packet_size (); | |
11520 | int out_len; | |
11521 | ||
80152258 PA |
11522 | readahead_cache_invalidate_fd (fd); |
11523 | ||
a6b151f1 DJ |
11524 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11525 | ||
11526 | remote_buffer_add_int (&p, &left, fd); | |
11527 | remote_buffer_add_string (&p, &left, ","); | |
11528 | ||
11529 | remote_buffer_add_int (&p, &left, offset); | |
11530 | remote_buffer_add_string (&p, &left, ","); | |
11531 | ||
124e13d9 | 11532 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11533 | get_remote_packet_size () - (p - rs->buf)); |
11534 | ||
11535 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11536 | remote_errno, NULL, NULL); | |
11537 | } | |
11538 | ||
80152258 PA |
11539 | /* Helper for the implementation of to_fileio_pread. Read the file |
11540 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11541 | |
11542 | static int | |
80152258 PA |
11543 | remote_hostio_pread_vFile (struct target_ops *self, |
11544 | int fd, gdb_byte *read_buf, int len, | |
11545 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11546 | { |
11547 | struct remote_state *rs = get_remote_state (); | |
11548 | char *p = rs->buf; | |
11549 | char *attachment; | |
11550 | int left = get_remote_packet_size (); | |
11551 | int ret, attachment_len; | |
11552 | int read_len; | |
11553 | ||
11554 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11555 | ||
11556 | remote_buffer_add_int (&p, &left, fd); | |
11557 | remote_buffer_add_string (&p, &left, ","); | |
11558 | ||
11559 | remote_buffer_add_int (&p, &left, len); | |
11560 | remote_buffer_add_string (&p, &left, ","); | |
11561 | ||
11562 | remote_buffer_add_int (&p, &left, offset); | |
11563 | ||
11564 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11565 | remote_errno, &attachment, | |
11566 | &attachment_len); | |
11567 | ||
11568 | if (ret < 0) | |
11569 | return ret; | |
11570 | ||
bc20a4af | 11571 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11572 | read_buf, len); |
11573 | if (read_len != ret) | |
11574 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11575 | ||
11576 | return ret; | |
11577 | } | |
11578 | ||
80152258 PA |
11579 | /* Serve pread from the readahead cache. Returns number of bytes |
11580 | read, or 0 if the request can't be served from the cache. */ | |
11581 | ||
11582 | static int | |
11583 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11584 | int fd, gdb_byte *read_buf, size_t len, | |
11585 | ULONGEST offset) | |
11586 | { | |
11587 | struct readahead_cache *cache = &rs->readahead_cache; | |
11588 | ||
11589 | if (cache->fd == fd | |
11590 | && cache->offset <= offset | |
11591 | && offset < cache->offset + cache->bufsize) | |
11592 | { | |
11593 | ULONGEST max = cache->offset + cache->bufsize; | |
11594 | ||
11595 | if (offset + len > max) | |
11596 | len = max - offset; | |
11597 | ||
11598 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11599 | return len; | |
11600 | } | |
11601 | ||
11602 | return 0; | |
11603 | } | |
11604 | ||
11605 | /* Implementation of to_fileio_pread. */ | |
11606 | ||
11607 | static int | |
11608 | remote_hostio_pread (struct target_ops *self, | |
11609 | int fd, gdb_byte *read_buf, int len, | |
11610 | ULONGEST offset, int *remote_errno) | |
11611 | { | |
11612 | int ret; | |
11613 | struct remote_state *rs = get_remote_state (); | |
11614 | struct readahead_cache *cache = &rs->readahead_cache; | |
11615 | ||
11616 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11617 | if (ret > 0) | |
11618 | { | |
11619 | cache->hit_count++; | |
11620 | ||
11621 | if (remote_debug) | |
11622 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11623 | pulongest (cache->hit_count)); | |
11624 | return ret; | |
11625 | } | |
11626 | ||
11627 | cache->miss_count++; | |
11628 | if (remote_debug) | |
11629 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11630 | pulongest (cache->miss_count)); | |
11631 | ||
11632 | cache->fd = fd; | |
11633 | cache->offset = offset; | |
11634 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11635 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11636 | |
11637 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11638 | cache->offset, remote_errno); | |
11639 | if (ret <= 0) | |
11640 | { | |
11641 | readahead_cache_invalidate_fd (fd); | |
11642 | return ret; | |
11643 | } | |
11644 | ||
11645 | cache->bufsize = ret; | |
11646 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11647 | } | |
11648 | ||
12e2a5fd | 11649 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11650 | |
11651 | static int | |
df39ea25 | 11652 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11653 | { |
11654 | struct remote_state *rs = get_remote_state (); | |
11655 | char *p = rs->buf; | |
11656 | int left = get_remote_packet_size () - 1; | |
11657 | ||
80152258 PA |
11658 | readahead_cache_invalidate_fd (fd); |
11659 | ||
a6b151f1 DJ |
11660 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11661 | ||
11662 | remote_buffer_add_int (&p, &left, fd); | |
11663 | ||
11664 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11665 | remote_errno, NULL, NULL); | |
11666 | } | |
11667 | ||
12e2a5fd | 11668 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11669 | |
11670 | static int | |
dbbca37d | 11671 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11672 | struct inferior *inf, const char *filename, |
11673 | int *remote_errno) | |
a6b151f1 DJ |
11674 | { |
11675 | struct remote_state *rs = get_remote_state (); | |
11676 | char *p = rs->buf; | |
11677 | int left = get_remote_packet_size () - 1; | |
11678 | ||
15a201c8 GB |
11679 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11680 | return -1; | |
11681 | ||
a6b151f1 DJ |
11682 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11683 | ||
11684 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11685 | strlen (filename)); | |
11686 | ||
11687 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11688 | remote_errno, NULL, NULL); | |
11689 | } | |
11690 | ||
12e2a5fd | 11691 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 11692 | |
e0d3522b | 11693 | static gdb::optional<std::string> |
fab5aa7c | 11694 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11695 | struct inferior *inf, const char *filename, |
11696 | int *remote_errno) | |
b9e7b9c3 UW |
11697 | { |
11698 | struct remote_state *rs = get_remote_state (); | |
11699 | char *p = rs->buf; | |
11700 | char *attachment; | |
11701 | int left = get_remote_packet_size (); | |
11702 | int len, attachment_len; | |
11703 | int read_len; | |
b9e7b9c3 | 11704 | |
15a201c8 | 11705 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 11706 | return {}; |
15a201c8 | 11707 | |
b9e7b9c3 UW |
11708 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11709 | ||
11710 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11711 | strlen (filename)); | |
11712 | ||
11713 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11714 | remote_errno, &attachment, | |
11715 | &attachment_len); | |
11716 | ||
11717 | if (len < 0) | |
e0d3522b | 11718 | return {}; |
b9e7b9c3 | 11719 | |
e0d3522b | 11720 | std::string ret (len, '\0'); |
b9e7b9c3 | 11721 | |
bc20a4af | 11722 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 11723 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
11724 | if (read_len != len) |
11725 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11726 | ||
b9e7b9c3 UW |
11727 | return ret; |
11728 | } | |
11729 | ||
12e2a5fd | 11730 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11731 | |
11732 | static int | |
11733 | remote_hostio_fstat (struct target_ops *self, | |
11734 | int fd, struct stat *st, | |
11735 | int *remote_errno) | |
11736 | { | |
11737 | struct remote_state *rs = get_remote_state (); | |
11738 | char *p = rs->buf; | |
11739 | int left = get_remote_packet_size (); | |
11740 | int attachment_len, ret; | |
11741 | char *attachment; | |
11742 | struct fio_stat fst; | |
11743 | int read_len; | |
11744 | ||
464b0089 GB |
11745 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11746 | ||
11747 | remote_buffer_add_int (&p, &left, fd); | |
11748 | ||
11749 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11750 | remote_errno, &attachment, | |
11751 | &attachment_len); | |
11752 | if (ret < 0) | |
0a93529c | 11753 | { |
464b0089 GB |
11754 | if (*remote_errno != FILEIO_ENOSYS) |
11755 | return ret; | |
11756 | ||
0a93529c GB |
11757 | /* Strictly we should return -1, ENOSYS here, but when |
11758 | "set sysroot remote:" was implemented in August 2008 | |
11759 | BFD's need for a stat function was sidestepped with | |
11760 | this hack. This was not remedied until March 2015 | |
11761 | so we retain the previous behavior to avoid breaking | |
11762 | compatibility. | |
11763 | ||
11764 | Note that the memset is a March 2015 addition; older | |
11765 | GDBs set st_size *and nothing else* so the structure | |
11766 | would have garbage in all other fields. This might | |
11767 | break something but retaining the previous behavior | |
11768 | here would be just too wrong. */ | |
11769 | ||
11770 | memset (st, 0, sizeof (struct stat)); | |
11771 | st->st_size = INT_MAX; | |
11772 | return 0; | |
11773 | } | |
11774 | ||
0a93529c GB |
11775 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11776 | (gdb_byte *) &fst, sizeof (fst)); | |
11777 | ||
11778 | if (read_len != ret) | |
11779 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11780 | ||
11781 | if (read_len != sizeof (fst)) | |
11782 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11783 | read_len, (int) sizeof (fst)); | |
11784 | ||
11785 | remote_fileio_to_host_stat (&fst, st); | |
11786 | ||
11787 | return 0; | |
11788 | } | |
11789 | ||
12e2a5fd | 11790 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11791 | |
11792 | static int | |
11793 | remote_filesystem_is_local (struct target_ops *self) | |
11794 | { | |
11795 | /* Valgrind GDB presents itself as a remote target but works | |
11796 | on the local filesystem: it does not implement remote get | |
11797 | and users are not expected to set a sysroot. To handle | |
11798 | this case we treat the remote filesystem as local if the | |
11799 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11800 | does not support vFile:open. */ | |
a3be80c3 | 11801 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11802 | { |
11803 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11804 | ||
11805 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11806 | { | |
11807 | int fd, remote_errno; | |
11808 | ||
11809 | /* Try opening a file to probe support. The supplied | |
11810 | filename is irrelevant, we only care about whether | |
11811 | the stub recognizes the packet or not. */ | |
07c138c8 | 11812 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11813 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11814 | &remote_errno); |
11815 | ||
11816 | if (fd >= 0) | |
11817 | remote_hostio_close (self, fd, &remote_errno); | |
11818 | ||
11819 | ps = packet_support (PACKET_vFile_open); | |
11820 | } | |
11821 | ||
11822 | if (ps == PACKET_DISABLE) | |
11823 | { | |
11824 | static int warning_issued = 0; | |
11825 | ||
11826 | if (!warning_issued) | |
11827 | { | |
11828 | warning (_("remote target does not support file" | |
11829 | " transfer, attempting to access files" | |
11830 | " from local filesystem.")); | |
11831 | warning_issued = 1; | |
11832 | } | |
11833 | ||
11834 | return 1; | |
11835 | } | |
11836 | } | |
11837 | ||
11838 | return 0; | |
11839 | } | |
11840 | ||
a6b151f1 DJ |
11841 | static int |
11842 | remote_fileio_errno_to_host (int errnum) | |
11843 | { | |
11844 | switch (errnum) | |
11845 | { | |
11846 | case FILEIO_EPERM: | |
11847 | return EPERM; | |
11848 | case FILEIO_ENOENT: | |
11849 | return ENOENT; | |
11850 | case FILEIO_EINTR: | |
11851 | return EINTR; | |
11852 | case FILEIO_EIO: | |
11853 | return EIO; | |
11854 | case FILEIO_EBADF: | |
11855 | return EBADF; | |
11856 | case FILEIO_EACCES: | |
11857 | return EACCES; | |
11858 | case FILEIO_EFAULT: | |
11859 | return EFAULT; | |
11860 | case FILEIO_EBUSY: | |
11861 | return EBUSY; | |
11862 | case FILEIO_EEXIST: | |
11863 | return EEXIST; | |
11864 | case FILEIO_ENODEV: | |
11865 | return ENODEV; | |
11866 | case FILEIO_ENOTDIR: | |
11867 | return ENOTDIR; | |
11868 | case FILEIO_EISDIR: | |
11869 | return EISDIR; | |
11870 | case FILEIO_EINVAL: | |
11871 | return EINVAL; | |
11872 | case FILEIO_ENFILE: | |
11873 | return ENFILE; | |
11874 | case FILEIO_EMFILE: | |
11875 | return EMFILE; | |
11876 | case FILEIO_EFBIG: | |
11877 | return EFBIG; | |
11878 | case FILEIO_ENOSPC: | |
11879 | return ENOSPC; | |
11880 | case FILEIO_ESPIPE: | |
11881 | return ESPIPE; | |
11882 | case FILEIO_EROFS: | |
11883 | return EROFS; | |
11884 | case FILEIO_ENOSYS: | |
11885 | return ENOSYS; | |
11886 | case FILEIO_ENAMETOOLONG: | |
11887 | return ENAMETOOLONG; | |
11888 | } | |
11889 | return -1; | |
11890 | } | |
11891 | ||
11892 | static char * | |
11893 | remote_hostio_error (int errnum) | |
11894 | { | |
11895 | int host_error = remote_fileio_errno_to_host (errnum); | |
11896 | ||
11897 | if (host_error == -1) | |
11898 | error (_("Unknown remote I/O error %d"), errnum); | |
11899 | else | |
11900 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11901 | } | |
11902 | ||
a6b151f1 DJ |
11903 | static void |
11904 | remote_hostio_close_cleanup (void *opaque) | |
11905 | { | |
11906 | int fd = *(int *) opaque; | |
11907 | int remote_errno; | |
11908 | ||
df39ea25 | 11909 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11910 | } |
11911 | ||
11912 | void | |
11913 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11914 | { | |
11915 | struct cleanup *back_to, *close_cleanup; | |
11916 | int retcode, fd, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
11917 | gdb_byte *buffer; |
11918 | int bytes_in_buffer; | |
11919 | int saw_eof; | |
11920 | ULONGEST offset; | |
5d93a237 | 11921 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11922 | |
5d93a237 | 11923 | if (!rs->remote_desc) |
a6b151f1 DJ |
11924 | error (_("command can only be used with remote target")); |
11925 | ||
d419f42d | 11926 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11927 | if (file == NULL) |
11928 | perror_with_name (local_file); | |
a6b151f1 | 11929 | |
07c138c8 | 11930 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11931 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11932 | | FILEIO_O_TRUNC), |
4313b8c0 | 11933 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11934 | if (fd == -1) |
11935 | remote_hostio_error (remote_errno); | |
11936 | ||
11937 | /* Send up to this many bytes at once. They won't all fit in the | |
11938 | remote packet limit, so we'll transfer slightly fewer. */ | |
11939 | io_size = get_remote_packet_size (); | |
224c3ddb | 11940 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 11941 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
11942 | |
11943 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11944 | ||
11945 | bytes_in_buffer = 0; | |
11946 | saw_eof = 0; | |
11947 | offset = 0; | |
11948 | while (bytes_in_buffer || !saw_eof) | |
11949 | { | |
11950 | if (!saw_eof) | |
11951 | { | |
3e43a32a MS |
11952 | bytes = fread (buffer + bytes_in_buffer, 1, |
11953 | io_size - bytes_in_buffer, | |
d419f42d | 11954 | file.get ()); |
a6b151f1 DJ |
11955 | if (bytes == 0) |
11956 | { | |
d419f42d | 11957 | if (ferror (file.get ())) |
a6b151f1 DJ |
11958 | error (_("Error reading %s."), local_file); |
11959 | else | |
11960 | { | |
11961 | /* EOF. Unless there is something still in the | |
11962 | buffer from the last iteration, we are done. */ | |
11963 | saw_eof = 1; | |
11964 | if (bytes_in_buffer == 0) | |
11965 | break; | |
11966 | } | |
11967 | } | |
11968 | } | |
11969 | else | |
11970 | bytes = 0; | |
11971 | ||
11972 | bytes += bytes_in_buffer; | |
11973 | bytes_in_buffer = 0; | |
11974 | ||
0d866f62 TT |
11975 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11976 | fd, buffer, bytes, | |
3e43a32a | 11977 | offset, &remote_errno); |
a6b151f1 DJ |
11978 | |
11979 | if (retcode < 0) | |
11980 | remote_hostio_error (remote_errno); | |
11981 | else if (retcode == 0) | |
11982 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11983 | else if (retcode < bytes) | |
11984 | { | |
11985 | /* Short write. Save the rest of the read data for the next | |
11986 | write. */ | |
11987 | bytes_in_buffer = bytes - retcode; | |
11988 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11989 | } | |
11990 | ||
11991 | offset += retcode; | |
11992 | } | |
11993 | ||
11994 | discard_cleanups (close_cleanup); | |
df39ea25 | 11995 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11996 | remote_hostio_error (remote_errno); |
11997 | ||
11998 | if (from_tty) | |
11999 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
12000 | do_cleanups (back_to); | |
12001 | } | |
12002 | ||
12003 | void | |
12004 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
12005 | { | |
12006 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 12007 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12008 | gdb_byte *buffer; |
12009 | ULONGEST offset; | |
5d93a237 | 12010 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12011 | |
5d93a237 | 12012 | if (!rs->remote_desc) |
a6b151f1 DJ |
12013 | error (_("command can only be used with remote target")); |
12014 | ||
07c138c8 | 12015 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
12016 | remote_file, FILEIO_O_RDONLY, 0, 0, |
12017 | &remote_errno); | |
a6b151f1 DJ |
12018 | if (fd == -1) |
12019 | remote_hostio_error (remote_errno); | |
12020 | ||
d419f42d | 12021 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12022 | if (file == NULL) |
12023 | perror_with_name (local_file); | |
a6b151f1 DJ |
12024 | |
12025 | /* Send up to this many bytes at once. They won't all fit in the | |
12026 | remote packet limit, so we'll transfer slightly fewer. */ | |
12027 | io_size = get_remote_packet_size (); | |
224c3ddb | 12028 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12029 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
12030 | |
12031 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
12032 | ||
12033 | offset = 0; | |
12034 | while (1) | |
12035 | { | |
a3be983c TT |
12036 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
12037 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
12038 | if (bytes == 0) |
12039 | /* Success, but no bytes, means end-of-file. */ | |
12040 | break; | |
12041 | if (bytes == -1) | |
12042 | remote_hostio_error (remote_errno); | |
12043 | ||
12044 | offset += bytes; | |
12045 | ||
d419f42d | 12046 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12047 | if (bytes == 0) |
12048 | perror_with_name (local_file); | |
12049 | } | |
12050 | ||
12051 | discard_cleanups (close_cleanup); | |
df39ea25 | 12052 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12053 | remote_hostio_error (remote_errno); |
12054 | ||
12055 | if (from_tty) | |
12056 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12057 | do_cleanups (back_to); | |
12058 | } | |
12059 | ||
12060 | void | |
12061 | remote_file_delete (const char *remote_file, int from_tty) | |
12062 | { | |
12063 | int retcode, remote_errno; | |
5d93a237 | 12064 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12065 | |
5d93a237 | 12066 | if (!rs->remote_desc) |
a6b151f1 DJ |
12067 | error (_("command can only be used with remote target")); |
12068 | ||
dbbca37d | 12069 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12070 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12071 | if (retcode == -1) |
12072 | remote_hostio_error (remote_errno); | |
12073 | ||
12074 | if (from_tty) | |
12075 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12076 | } | |
12077 | ||
12078 | static void | |
ac88e2de | 12079 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12080 | { |
d1a41061 PP |
12081 | if (args == NULL) |
12082 | error_no_arg (_("file to put")); | |
12083 | ||
773a1edc | 12084 | gdb_argv argv (args); |
a6b151f1 DJ |
12085 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12086 | error (_("Invalid parameters to remote put")); | |
12087 | ||
12088 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12089 | } |
12090 | ||
12091 | static void | |
ac88e2de | 12092 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12093 | { |
d1a41061 PP |
12094 | if (args == NULL) |
12095 | error_no_arg (_("file to get")); | |
12096 | ||
773a1edc | 12097 | gdb_argv argv (args); |
a6b151f1 DJ |
12098 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12099 | error (_("Invalid parameters to remote get")); | |
12100 | ||
12101 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12102 | } |
12103 | ||
12104 | static void | |
ac88e2de | 12105 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12106 | { |
d1a41061 PP |
12107 | if (args == NULL) |
12108 | error_no_arg (_("file to delete")); | |
12109 | ||
773a1edc | 12110 | gdb_argv argv (args); |
a6b151f1 DJ |
12111 | if (argv[0] == NULL || argv[1] != NULL) |
12112 | error (_("Invalid parameters to remote delete")); | |
12113 | ||
12114 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12115 | } |
12116 | ||
12117 | static void | |
981a3fb3 | 12118 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12119 | { |
635c7e8a | 12120 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12121 | } |
12122 | ||
b2175913 | 12123 | static int |
19db3e69 | 12124 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 12125 | { |
4082afcc PA |
12126 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12127 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
12128 | return 1; |
12129 | else | |
12130 | return 0; | |
b2175913 MS |
12131 | } |
12132 | ||
74531fed | 12133 | static int |
2a9a2795 | 12134 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
12135 | { |
12136 | return 1; | |
12137 | } | |
12138 | ||
03583c20 | 12139 | static int |
2bfc0540 | 12140 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
12141 | { |
12142 | /* Only supported in extended mode. */ | |
12143 | return 0; | |
12144 | } | |
12145 | ||
8a305172 | 12146 | static int |
86ce2668 | 12147 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
12148 | { |
12149 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12150 | |
8020350c | 12151 | return remote_multi_process_p (rs); |
8a305172 PA |
12152 | } |
12153 | ||
70221824 | 12154 | static int |
782b2b07 SS |
12155 | remote_supports_cond_tracepoints (void) |
12156 | { | |
4082afcc | 12157 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12158 | } |
12159 | ||
3788aec7 | 12160 | static int |
efcc2da7 | 12161 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 12162 | { |
4082afcc | 12163 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12164 | } |
12165 | ||
70221824 | 12166 | static int |
7a697b8d SS |
12167 | remote_supports_fast_tracepoints (void) |
12168 | { | |
4082afcc | 12169 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12170 | } |
12171 | ||
0fb4aa4b PA |
12172 | static int |
12173 | remote_supports_static_tracepoints (void) | |
12174 | { | |
4082afcc | 12175 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12176 | } |
12177 | ||
1e4d1764 YQ |
12178 | static int |
12179 | remote_supports_install_in_trace (void) | |
12180 | { | |
4082afcc | 12181 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12182 | } |
12183 | ||
d248b706 | 12184 | static int |
7d178d6a | 12185 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 12186 | { |
4082afcc PA |
12187 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12188 | == PACKET_ENABLE); | |
d248b706 KY |
12189 | } |
12190 | ||
3065dfb6 | 12191 | static int |
6de37a3a | 12192 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 12193 | { |
4082afcc | 12194 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12195 | } |
12196 | ||
d3ce09f5 | 12197 | static int |
78eff0ec | 12198 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 12199 | { |
4082afcc | 12200 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12201 | } |
12202 | ||
35b1e5cc | 12203 | static void |
ecae04e1 | 12204 | remote_trace_init (struct target_ops *self) |
35b1e5cc | 12205 | { |
b6bb3468 PA |
12206 | struct remote_state *rs = get_remote_state (); |
12207 | ||
35b1e5cc | 12208 | putpkt ("QTinit"); |
b6bb3468 PA |
12209 | remote_get_noisy_reply (); |
12210 | if (strcmp (rs->buf, "OK") != 0) | |
35b1e5cc SS |
12211 | error (_("Target does not support this command.")); |
12212 | } | |
12213 | ||
409873ef SS |
12214 | /* Recursive routine to walk through command list including loops, and |
12215 | download packets for each command. */ | |
12216 | ||
12217 | static void | |
12218 | remote_download_command_source (int num, ULONGEST addr, | |
12219 | struct command_line *cmds) | |
12220 | { | |
12221 | struct remote_state *rs = get_remote_state (); | |
12222 | struct command_line *cmd; | |
12223 | ||
12224 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12225 | { | |
0df8b418 | 12226 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12227 | strcpy (rs->buf, "QTDPsrc:"); |
12228 | encode_source_string (num, addr, "cmd", cmd->line, | |
12229 | rs->buf + strlen (rs->buf), | |
12230 | rs->buf_size - strlen (rs->buf)); | |
12231 | putpkt (rs->buf); | |
b6bb3468 PA |
12232 | remote_get_noisy_reply (); |
12233 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12234 | warning (_("Target does not support source download.")); |
12235 | ||
12236 | if (cmd->control_type == while_control | |
12237 | || cmd->control_type == while_stepping_control) | |
12238 | { | |
12239 | remote_download_command_source (num, addr, *cmd->body_list); | |
12240 | ||
0df8b418 | 12241 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12242 | strcpy (rs->buf, "QTDPsrc:"); |
12243 | encode_source_string (num, addr, "cmd", "end", | |
12244 | rs->buf + strlen (rs->buf), | |
12245 | rs->buf_size - strlen (rs->buf)); | |
12246 | putpkt (rs->buf); | |
b6bb3468 PA |
12247 | remote_get_noisy_reply (); |
12248 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12249 | warning (_("Target does not support source download.")); |
12250 | } | |
12251 | } | |
12252 | } | |
12253 | ||
35b1e5cc | 12254 | static void |
548f7808 | 12255 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 12256 | { |
bba74b36 | 12257 | #define BUF_SIZE 2048 |
e8ba3115 | 12258 | |
35b1e5cc | 12259 | CORE_ADDR tpaddr; |
409873ef | 12260 | char addrbuf[40]; |
bba74b36 | 12261 | char buf[BUF_SIZE]; |
b44ec619 SM |
12262 | std::vector<std::string> tdp_actions; |
12263 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12264 | char *pkt; |
e8ba3115 | 12265 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12266 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12267 | struct remote_state *rs = get_remote_state (); |
35b1e5cc | 12268 | |
dc673c81 | 12269 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12270 | |
12271 | tpaddr = loc->address; | |
12272 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12273 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12274 | addrbuf, /* address */ | |
12275 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12276 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12277 | /* Fast tracepoints are mostly handled by the target, but we can |
12278 | tell the target how big of an instruction block should be moved | |
12279 | around. */ | |
12280 | if (b->type == bp_fast_tracepoint) | |
12281 | { | |
12282 | /* Only test for support at download time; we may not know | |
12283 | target capabilities at definition time. */ | |
12284 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12285 | { |
6b940e6a PL |
12286 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12287 | NULL)) | |
bba74b36 | 12288 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12289 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12290 | else |
e8ba3115 YQ |
12291 | /* If it passed validation at definition but fails now, |
12292 | something is very wrong. */ | |
12293 | internal_error (__FILE__, __LINE__, | |
12294 | _("Fast tracepoint not " | |
12295 | "valid during download")); | |
35b1e5cc | 12296 | } |
e8ba3115 YQ |
12297 | else |
12298 | /* Fast tracepoints are functionally identical to regular | |
12299 | tracepoints, so don't take lack of support as a reason to | |
12300 | give up on the trace run. */ | |
12301 | warning (_("Target does not support fast tracepoints, " | |
12302 | "downloading %d as regular tracepoint"), b->number); | |
12303 | } | |
12304 | else if (b->type == bp_static_tracepoint) | |
12305 | { | |
12306 | /* Only test for support at download time; we may not know | |
12307 | target capabilities at definition time. */ | |
12308 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12309 | { |
e8ba3115 | 12310 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12311 | |
e8ba3115 YQ |
12312 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12313 | strcat (buf, ":S"); | |
0fb4aa4b | 12314 | else |
e8ba3115 | 12315 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12316 | } |
e8ba3115 YQ |
12317 | else |
12318 | /* Fast tracepoints are functionally identical to regular | |
12319 | tracepoints, so don't take lack of support as a reason | |
12320 | to give up on the trace run. */ | |
12321 | error (_("Target does not support static tracepoints")); | |
12322 | } | |
12323 | /* If the tracepoint has a conditional, make it into an agent | |
12324 | expression and append to the definition. */ | |
12325 | if (loc->cond) | |
12326 | { | |
12327 | /* Only test support at download time, we may not know target | |
12328 | capabilities at definition time. */ | |
12329 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12330 | { |
833177a4 | 12331 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12332 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12333 | aexpr->len); | |
e8ba3115 | 12334 | pkt = buf + strlen (buf); |
b44ec619 | 12335 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12336 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12337 | *pkt = '\0'; | |
35b1e5cc | 12338 | } |
e8ba3115 YQ |
12339 | else |
12340 | warning (_("Target does not support conditional tracepoints, " | |
12341 | "ignoring tp %d cond"), b->number); | |
12342 | } | |
35b1e5cc | 12343 | |
d9b3f62e | 12344 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12345 | strcat (buf, "-"); |
12346 | putpkt (buf); | |
b6bb3468 PA |
12347 | remote_get_noisy_reply (); |
12348 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12349 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12350 | |
e8ba3115 | 12351 | /* do_single_steps (t); */ |
b44ec619 SM |
12352 | for (auto action_it = tdp_actions.begin (); |
12353 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12354 | { |
b44ec619 SM |
12355 | QUIT; /* Allow user to bail out with ^C. */ |
12356 | ||
12357 | bool has_more = (action_it != tdp_actions.end () | |
12358 | || !stepping_actions.empty ()); | |
12359 | ||
12360 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", | |
12361 | b->number, addrbuf, /* address */ | |
12362 | action_it->c_str (), | |
12363 | has_more ? '-' : 0); | |
12364 | putpkt (buf); | |
12365 | remote_get_noisy_reply (); | |
12366 | if (strcmp (rs->buf, "OK")) | |
12367 | error (_("Error on target while setting tracepoints.")); | |
e8ba3115 | 12368 | } |
409873ef | 12369 | |
b44ec619 SM |
12370 | for (auto action_it = stepping_actions.begin (); |
12371 | action_it != stepping_actions.end (); action_it++) | |
12372 | { | |
12373 | QUIT; /* Allow user to bail out with ^C. */ | |
12374 | ||
12375 | bool is_first = action_it == stepping_actions.begin (); | |
12376 | bool has_more = action_it != stepping_actions.end (); | |
12377 | ||
12378 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", | |
12379 | b->number, addrbuf, /* address */ | |
12380 | is_first ? "S" : "", | |
12381 | action_it->c_str (), | |
12382 | has_more ? "-" : ""); | |
12383 | putpkt (buf); | |
12384 | remote_get_noisy_reply (); | |
12385 | if (strcmp (rs->buf, "OK")) | |
12386 | error (_("Error on target while setting tracepoints.")); | |
12387 | } | |
12388 | ||
4082afcc | 12389 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12390 | { |
f00aae0f | 12391 | if (b->location != NULL) |
409873ef | 12392 | { |
e8ba3115 | 12393 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12394 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12395 | event_location_to_string (b->location.get ()), |
f00aae0f | 12396 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 | 12397 | putpkt (buf); |
b6bb3468 PA |
12398 | remote_get_noisy_reply (); |
12399 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12400 | warning (_("Target does not support source download.")); |
409873ef | 12401 | } |
e8ba3115 YQ |
12402 | if (b->cond_string) |
12403 | { | |
12404 | strcpy (buf, "QTDPsrc:"); | |
12405 | encode_source_string (b->number, loc->address, | |
12406 | "cond", b->cond_string, buf + strlen (buf), | |
12407 | 2048 - strlen (buf)); | |
12408 | putpkt (buf); | |
b6bb3468 PA |
12409 | remote_get_noisy_reply (); |
12410 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 YQ |
12411 | warning (_("Target does not support source download.")); |
12412 | } | |
12413 | remote_download_command_source (b->number, loc->address, | |
12414 | breakpoint_commands (b)); | |
35b1e5cc | 12415 | } |
35b1e5cc SS |
12416 | } |
12417 | ||
1e4d1764 | 12418 | static int |
a52a8357 | 12419 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12420 | { |
1e51243a PA |
12421 | struct remote_state *rs = get_remote_state (); |
12422 | struct trace_status *ts; | |
12423 | int status; | |
12424 | ||
12425 | /* Don't try to install tracepoints until we've relocated our | |
12426 | symbols, and fetched and merged the target's tracepoint list with | |
12427 | ours. */ | |
12428 | if (rs->starting_up) | |
12429 | return 0; | |
12430 | ||
12431 | ts = current_trace_status (); | |
8bd200f1 | 12432 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12433 | |
12434 | if (status == -1 || !ts->running_known || !ts->running) | |
12435 | return 0; | |
12436 | ||
12437 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12438 | installing tracepoint in trace, we have to return. */ | |
12439 | if (!remote_supports_install_in_trace ()) | |
12440 | return 0; | |
12441 | ||
12442 | return 1; | |
12443 | } | |
12444 | ||
12445 | ||
35b1e5cc | 12446 | static void |
559d2b81 | 12447 | remote_download_trace_state_variable (struct target_ops *self, |
c252925c | 12448 | const trace_state_variable &tsv) |
35b1e5cc SS |
12449 | { |
12450 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12451 | char *p; |
35b1e5cc | 12452 | |
bba74b36 | 12453 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
12454 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
12455 | tsv.builtin); | |
00bf0b85 | 12456 | p = rs->buf + strlen (rs->buf); |
c252925c | 12457 | if ((p - rs->buf) + tsv.name.length () * 2 >= get_remote_packet_size ()) |
00bf0b85 | 12458 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 12459 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 12460 | *p++ = '\0'; |
35b1e5cc | 12461 | putpkt (rs->buf); |
b6bb3468 PA |
12462 | remote_get_noisy_reply (); |
12463 | if (*rs->buf == '\0') | |
ad91cd99 | 12464 | error (_("Target does not support this command.")); |
b6bb3468 | 12465 | if (strcmp (rs->buf, "OK") != 0) |
ad91cd99 | 12466 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
12467 | } |
12468 | ||
d248b706 | 12469 | static void |
46670d57 TT |
12470 | remote_enable_tracepoint (struct target_ops *self, |
12471 | struct bp_location *location) | |
d248b706 KY |
12472 | { |
12473 | struct remote_state *rs = get_remote_state (); | |
12474 | char addr_buf[40]; | |
12475 | ||
12476 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12477 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12478 | location->owner->number, addr_buf); | |
d248b706 | 12479 | putpkt (rs->buf); |
b6bb3468 | 12480 | remote_get_noisy_reply (); |
d248b706 KY |
12481 | if (*rs->buf == '\0') |
12482 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12483 | if (strcmp (rs->buf, "OK") != 0) | |
12484 | error (_("Error on target while enabling tracepoint.")); | |
12485 | } | |
12486 | ||
12487 | static void | |
780b049c TT |
12488 | remote_disable_tracepoint (struct target_ops *self, |
12489 | struct bp_location *location) | |
d248b706 KY |
12490 | { |
12491 | struct remote_state *rs = get_remote_state (); | |
12492 | char addr_buf[40]; | |
12493 | ||
12494 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12495 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12496 | location->owner->number, addr_buf); | |
d248b706 | 12497 | putpkt (rs->buf); |
b6bb3468 | 12498 | remote_get_noisy_reply (); |
d248b706 KY |
12499 | if (*rs->buf == '\0') |
12500 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12501 | if (strcmp (rs->buf, "OK") != 0) | |
12502 | error (_("Error on target while disabling tracepoint.")); | |
12503 | } | |
12504 | ||
35b1e5cc | 12505 | static void |
583f9a86 | 12506 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12507 | { |
12508 | asection *s; | |
81b9b86e | 12509 | bfd *abfd = NULL; |
35b1e5cc | 12510 | bfd_size_type size; |
608bcef2 | 12511 | bfd_vma vma; |
35b1e5cc | 12512 | int anysecs = 0; |
c2fa21f1 | 12513 | int offset = 0; |
35b1e5cc SS |
12514 | |
12515 | if (!exec_bfd) | |
12516 | return; /* No information to give. */ | |
12517 | ||
b6bb3468 PA |
12518 | struct remote_state *rs = get_remote_state (); |
12519 | ||
12520 | strcpy (rs->buf, "QTro"); | |
12521 | offset = strlen (rs->buf); | |
35b1e5cc SS |
12522 | for (s = exec_bfd->sections; s; s = s->next) |
12523 | { | |
12524 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12525 | int sec_length; |
35b1e5cc SS |
12526 | |
12527 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12528 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12529 | (s->flags & SEC_READONLY) == 0) |
12530 | continue; | |
12531 | ||
12532 | anysecs = 1; | |
81b9b86e | 12533 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12534 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12535 | sprintf_vma (tmp1, vma); |
12536 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 12537 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
b6bb3468 | 12538 | if (offset + sec_length + 1 > rs->buf_size) |
c2fa21f1 | 12539 | { |
4082afcc | 12540 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12541 | warning (_("\ |
c2fa21f1 HZ |
12542 | Too many sections for read-only sections definition packet.")); |
12543 | break; | |
12544 | } | |
b6bb3468 | 12545 | xsnprintf (rs->buf + offset, rs->buf_size - offset, ":%s,%s", |
bba74b36 | 12546 | tmp1, tmp2); |
c2fa21f1 | 12547 | offset += sec_length; |
35b1e5cc SS |
12548 | } |
12549 | if (anysecs) | |
12550 | { | |
b6bb3468 PA |
12551 | putpkt (rs->buf); |
12552 | getpkt (&rs->buf, &rs->buf_size, 0); | |
35b1e5cc SS |
12553 | } |
12554 | } | |
12555 | ||
12556 | static void | |
e2d1aae3 | 12557 | remote_trace_start (struct target_ops *self) |
35b1e5cc | 12558 | { |
b6bb3468 PA |
12559 | struct remote_state *rs = get_remote_state (); |
12560 | ||
35b1e5cc | 12561 | putpkt ("QTStart"); |
b6bb3468 PA |
12562 | remote_get_noisy_reply (); |
12563 | if (*rs->buf == '\0') | |
ad91cd99 | 12564 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12565 | if (strcmp (rs->buf, "OK") != 0) |
12566 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12567 | } |
12568 | ||
12569 | static int | |
8bd200f1 | 12570 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12571 | { |
953b98d1 | 12572 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12573 | char *p = NULL; |
0df8b418 | 12574 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12575 | extern int trace_regblock_size; |
bd3eecc3 | 12576 | enum packet_result result; |
b6bb3468 | 12577 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 12578 | |
4082afcc | 12579 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12580 | return -1; |
a744cf53 | 12581 | |
5cd63fda PA |
12582 | trace_regblock_size |
12583 | = get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; | |
00bf0b85 | 12584 | |
049dc89b JK |
12585 | putpkt ("qTStatus"); |
12586 | ||
492d29ea | 12587 | TRY |
67f41397 | 12588 | { |
b6bb3468 | 12589 | p = remote_get_noisy_reply (); |
67f41397 | 12590 | } |
492d29ea | 12591 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12592 | { |
598d3636 JK |
12593 | if (ex.error != TARGET_CLOSE_ERROR) |
12594 | { | |
12595 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12596 | return -1; | |
12597 | } | |
12598 | throw_exception (ex); | |
67f41397 | 12599 | } |
492d29ea | 12600 | END_CATCH |
00bf0b85 | 12601 | |
bd3eecc3 PA |
12602 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12603 | ||
00bf0b85 | 12604 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12605 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12606 | return -1; |
35b1e5cc | 12607 | |
00bf0b85 | 12608 | /* We're working with a live target. */ |
f5911ea1 | 12609 | ts->filename = NULL; |
00bf0b85 | 12610 | |
00bf0b85 | 12611 | if (*p++ != 'T') |
b6bb3468 | 12612 | error (_("Bogus trace status reply from target: %s"), rs->buf); |
35b1e5cc | 12613 | |
84cebc4a YQ |
12614 | /* Function 'parse_trace_status' sets default value of each field of |
12615 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12616 | parse_trace_status (p, ts); |
12617 | ||
12618 | return ts->running; | |
35b1e5cc SS |
12619 | } |
12620 | ||
70221824 | 12621 | static void |
db90e85c | 12622 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12623 | struct uploaded_tp *utp) |
12624 | { | |
12625 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12626 | char *reply; |
12627 | struct bp_location *loc; | |
12628 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12629 | size_t size = get_remote_packet_size (); |
f196051f SS |
12630 | |
12631 | if (tp) | |
12632 | { | |
c1fc2657 | 12633 | tp->hit_count = 0; |
f196051f | 12634 | tp->traceframe_usage = 0; |
c1fc2657 | 12635 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
12636 | { |
12637 | /* If the tracepoint was never downloaded, don't go asking for | |
12638 | any status. */ | |
12639 | if (tp->number_on_target == 0) | |
12640 | continue; | |
bba74b36 YQ |
12641 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12642 | phex_nz (loc->address, 0)); | |
f196051f | 12643 | putpkt (rs->buf); |
b6bb3468 | 12644 | reply = remote_get_noisy_reply (); |
f196051f SS |
12645 | if (reply && *reply) |
12646 | { | |
12647 | if (*reply == 'V') | |
12648 | parse_tracepoint_status (reply + 1, bp, utp); | |
12649 | } | |
12650 | } | |
12651 | } | |
12652 | else if (utp) | |
12653 | { | |
12654 | utp->hit_count = 0; | |
12655 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12656 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12657 | phex_nz (utp->addr, 0)); | |
f196051f | 12658 | putpkt (rs->buf); |
b6bb3468 | 12659 | reply = remote_get_noisy_reply (); |
f196051f SS |
12660 | if (reply && *reply) |
12661 | { | |
12662 | if (*reply == 'V') | |
12663 | parse_tracepoint_status (reply + 1, bp, utp); | |
12664 | } | |
12665 | } | |
12666 | } | |
12667 | ||
35b1e5cc | 12668 | static void |
74499f1b | 12669 | remote_trace_stop (struct target_ops *self) |
35b1e5cc | 12670 | { |
b6bb3468 PA |
12671 | struct remote_state *rs = get_remote_state (); |
12672 | ||
35b1e5cc | 12673 | putpkt ("QTStop"); |
b6bb3468 PA |
12674 | remote_get_noisy_reply (); |
12675 | if (*rs->buf == '\0') | |
ad91cd99 | 12676 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12677 | if (strcmp (rs->buf, "OK") != 0) |
12678 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12679 | } |
12680 | ||
12681 | static int | |
bd4c6793 TT |
12682 | remote_trace_find (struct target_ops *self, |
12683 | enum trace_find_type type, int num, | |
cc5925ad | 12684 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12685 | int *tpp) |
12686 | { | |
12687 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12688 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12689 | char *p, *reply; |
12690 | int target_frameno = -1, target_tracept = -1; | |
12691 | ||
e6e4e701 PA |
12692 | /* Lookups other than by absolute frame number depend on the current |
12693 | trace selected, so make sure it is correct on the remote end | |
12694 | first. */ | |
12695 | if (type != tfind_number) | |
12696 | set_remote_traceframe (); | |
12697 | ||
35b1e5cc SS |
12698 | p = rs->buf; |
12699 | strcpy (p, "QTFrame:"); | |
12700 | p = strchr (p, '\0'); | |
12701 | switch (type) | |
12702 | { | |
12703 | case tfind_number: | |
bba74b36 | 12704 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12705 | break; |
12706 | case tfind_pc: | |
bba74b36 | 12707 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12708 | break; |
12709 | case tfind_tp: | |
bba74b36 | 12710 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12711 | break; |
12712 | case tfind_range: | |
bba74b36 YQ |
12713 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12714 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12715 | break; |
12716 | case tfind_outside: | |
bba74b36 YQ |
12717 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12718 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12719 | break; |
12720 | default: | |
9b20d036 | 12721 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12722 | } |
12723 | ||
12724 | putpkt (rs->buf); | |
b6bb3468 | 12725 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
12726 | if (*reply == '\0') |
12727 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12728 | |
12729 | while (reply && *reply) | |
12730 | switch (*reply) | |
12731 | { | |
12732 | case 'F': | |
f197e0f1 VP |
12733 | p = ++reply; |
12734 | target_frameno = (int) strtol (p, &reply, 16); | |
12735 | if (reply == p) | |
12736 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12737 | /* Don't update our remote traceframe number cache on failure |
12738 | to select a remote traceframe. */ | |
f197e0f1 VP |
12739 | if (target_frameno == -1) |
12740 | return -1; | |
35b1e5cc SS |
12741 | break; |
12742 | case 'T': | |
f197e0f1 VP |
12743 | p = ++reply; |
12744 | target_tracept = (int) strtol (p, &reply, 16); | |
12745 | if (reply == p) | |
12746 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12747 | break; |
12748 | case 'O': /* "OK"? */ | |
12749 | if (reply[1] == 'K' && reply[2] == '\0') | |
12750 | reply += 2; | |
12751 | else | |
12752 | error (_("Bogus reply from target: %s"), reply); | |
12753 | break; | |
12754 | default: | |
12755 | error (_("Bogus reply from target: %s"), reply); | |
12756 | } | |
12757 | if (tpp) | |
12758 | *tpp = target_tracept; | |
e6e4e701 | 12759 | |
262e1174 | 12760 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12761 | return target_frameno; |
12762 | } | |
12763 | ||
12764 | static int | |
4011015b TT |
12765 | remote_get_trace_state_variable_value (struct target_ops *self, |
12766 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12767 | { |
12768 | struct remote_state *rs = get_remote_state (); | |
12769 | char *reply; | |
12770 | ULONGEST uval; | |
12771 | ||
e6e4e701 PA |
12772 | set_remote_traceframe (); |
12773 | ||
bba74b36 | 12774 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 12775 | putpkt (rs->buf); |
b6bb3468 | 12776 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
12777 | if (reply && *reply) |
12778 | { | |
12779 | if (*reply == 'V') | |
12780 | { | |
12781 | unpack_varlen_hex (reply + 1, &uval); | |
12782 | *val = (LONGEST) uval; | |
12783 | return 1; | |
12784 | } | |
12785 | } | |
12786 | return 0; | |
12787 | } | |
12788 | ||
00bf0b85 | 12789 | static int |
dc3decaf | 12790 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12791 | { |
12792 | struct remote_state *rs = get_remote_state (); | |
12793 | char *p, *reply; | |
12794 | ||
12795 | p = rs->buf; | |
12796 | strcpy (p, "QTSave:"); | |
12797 | p += strlen (p); | |
12798 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12799 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12800 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12801 | *p++ = '\0'; |
12802 | putpkt (rs->buf); | |
b6bb3468 | 12803 | reply = remote_get_noisy_reply (); |
d6c5869f | 12804 | if (*reply == '\0') |
ad91cd99 PA |
12805 | error (_("Target does not support this command.")); |
12806 | if (strcmp (reply, "OK") != 0) | |
12807 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12808 | return 0; |
12809 | } | |
12810 | ||
12811 | /* This is basically a memory transfer, but needs to be its own packet | |
12812 | because we don't know how the target actually organizes its trace | |
12813 | memory, plus we want to be able to ask for as much as possible, but | |
12814 | not be unhappy if we don't get as much as we ask for. */ | |
12815 | ||
12816 | static LONGEST | |
88ee6f45 TT |
12817 | remote_get_raw_trace_data (struct target_ops *self, |
12818 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12819 | { |
12820 | struct remote_state *rs = get_remote_state (); | |
12821 | char *reply; | |
12822 | char *p; | |
12823 | int rslt; | |
12824 | ||
12825 | p = rs->buf; | |
12826 | strcpy (p, "qTBuffer:"); | |
12827 | p += strlen (p); | |
12828 | p += hexnumstr (p, offset); | |
12829 | *p++ = ','; | |
12830 | p += hexnumstr (p, len); | |
12831 | *p++ = '\0'; | |
12832 | ||
12833 | putpkt (rs->buf); | |
b6bb3468 | 12834 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
12835 | if (reply && *reply) |
12836 | { | |
12837 | /* 'l' by itself means we're at the end of the buffer and | |
12838 | there is nothing more to get. */ | |
12839 | if (*reply == 'l') | |
12840 | return 0; | |
12841 | ||
12842 | /* Convert the reply into binary. Limit the number of bytes to | |
12843 | convert according to our passed-in buffer size, rather than | |
12844 | what was returned in the packet; if the target is | |
12845 | unexpectedly generous and gives us a bigger reply than we | |
12846 | asked for, we don't want to crash. */ | |
b6bb3468 | 12847 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
12848 | return rslt; |
12849 | } | |
12850 | ||
12851 | /* Something went wrong, flag as an error. */ | |
12852 | return -1; | |
12853 | } | |
12854 | ||
35b1e5cc | 12855 | static void |
37b25738 | 12856 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12857 | { |
12858 | struct remote_state *rs = get_remote_state (); | |
12859 | ||
4082afcc | 12860 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12861 | { |
ad91cd99 PA |
12862 | char *reply; |
12863 | ||
bba74b36 | 12864 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12865 | putpkt (rs->buf); |
b6bb3468 | 12866 | reply = remote_get_noisy_reply (); |
ad91cd99 | 12867 | if (*reply == '\0') |
33da3f1c | 12868 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12869 | if (strcmp (reply, "OK") != 0) |
12870 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12871 | } |
12872 | else if (val) | |
12873 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12874 | } |
12875 | ||
dc146f7c VP |
12876 | static int |
12877 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12878 | { | |
12879 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12880 | |
7aabaf9d SM |
12881 | if (info != NULL && info->priv != NULL) |
12882 | return get_remote_thread_info (info)->core; | |
12883 | ||
dc146f7c VP |
12884 | return -1; |
12885 | } | |
12886 | ||
4daf5ac0 | 12887 | static void |
736d5b1f | 12888 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12889 | { |
12890 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12891 | char *reply; |
4daf5ac0 | 12892 | |
bba74b36 | 12893 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12894 | putpkt (rs->buf); |
b6bb3468 | 12895 | reply = remote_get_noisy_reply (); |
ad91cd99 | 12896 | if (*reply == '\0') |
4daf5ac0 | 12897 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12898 | if (strcmp (reply, "OK") != 0) |
12899 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12900 | } |
12901 | ||
2098b393 | 12902 | static traceframe_info_up |
a893e81f | 12903 | remote_traceframe_info (struct target_ops *self) |
b3b9301e | 12904 | { |
9018be22 | 12905 | gdb::optional<gdb::char_vector> text |
b7b030ad TT |
12906 | = target_read_stralloc (¤t_target, TARGET_OBJECT_TRACEFRAME_INFO, |
12907 | NULL); | |
9018be22 SM |
12908 | if (text) |
12909 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
12910 | |
12911 | return NULL; | |
12912 | } | |
12913 | ||
405f8e94 SS |
12914 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12915 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12916 | if the packet is not supported, and 0 if the minimum instruction | |
12917 | length is unknown. */ | |
12918 | ||
12919 | static int | |
0e67620a | 12920 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12921 | { |
12922 | struct remote_state *rs = get_remote_state (); | |
12923 | char *reply; | |
12924 | ||
e886a173 PA |
12925 | /* If we're not debugging a process yet, the IPA can't be |
12926 | loaded. */ | |
12927 | if (!target_has_execution) | |
12928 | return 0; | |
12929 | ||
12930 | /* Make sure the remote is pointing at the right process. */ | |
12931 | set_general_process (); | |
12932 | ||
bba74b36 | 12933 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 12934 | putpkt (rs->buf); |
b6bb3468 | 12935 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
12936 | if (*reply == '\0') |
12937 | return -1; | |
12938 | else | |
12939 | { | |
12940 | ULONGEST min_insn_len; | |
12941 | ||
12942 | unpack_varlen_hex (reply, &min_insn_len); | |
12943 | ||
12944 | return (int) min_insn_len; | |
12945 | } | |
12946 | } | |
12947 | ||
f6f899bf | 12948 | static void |
4da384be | 12949 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12950 | { |
4082afcc | 12951 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12952 | { |
12953 | struct remote_state *rs = get_remote_state (); | |
12954 | char *buf = rs->buf; | |
12955 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12956 | enum packet_result result; | |
12957 | ||
12958 | gdb_assert (val >= 0 || val == -1); | |
12959 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12960 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12961 | if (val < 0) | |
12962 | { | |
12963 | *buf++ = '-'; | |
12964 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12965 | } | |
12966 | else | |
12967 | buf += hexnumstr (buf, (ULONGEST) val); | |
12968 | ||
12969 | putpkt (rs->buf); | |
b6bb3468 | 12970 | remote_get_noisy_reply (); |
f6f899bf HAQ |
12971 | result = packet_ok (rs->buf, |
12972 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12973 | ||
12974 | if (result != PACKET_OK) | |
12975 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12976 | } | |
12977 | } | |
12978 | ||
f196051f | 12979 | static int |
d9e68a2c TT |
12980 | remote_set_trace_notes (struct target_ops *self, |
12981 | const char *user, const char *notes, | |
ca623f82 | 12982 | const char *stop_notes) |
f196051f SS |
12983 | { |
12984 | struct remote_state *rs = get_remote_state (); | |
12985 | char *reply; | |
12986 | char *buf = rs->buf; | |
12987 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12988 | int nbytes; | |
12989 | ||
12990 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12991 | if (user) | |
12992 | { | |
12993 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 12994 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
12995 | buf += 2 * nbytes; |
12996 | *buf++ = ';'; | |
12997 | } | |
12998 | if (notes) | |
12999 | { | |
13000 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13001 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13002 | buf += 2 * nbytes; |
13003 | *buf++ = ';'; | |
13004 | } | |
13005 | if (stop_notes) | |
13006 | { | |
13007 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13008 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13009 | buf += 2 * nbytes; |
13010 | *buf++ = ';'; | |
13011 | } | |
13012 | /* Ensure the buffer is terminated. */ | |
13013 | *buf = '\0'; | |
13014 | ||
13015 | putpkt (rs->buf); | |
b6bb3468 | 13016 | reply = remote_get_noisy_reply (); |
f196051f SS |
13017 | if (*reply == '\0') |
13018 | return 0; | |
13019 | ||
13020 | if (strcmp (reply, "OK") != 0) | |
13021 | error (_("Bogus reply from target: %s"), reply); | |
13022 | ||
13023 | return 1; | |
13024 | } | |
13025 | ||
d1feda86 | 13026 | static int |
2c152180 | 13027 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 13028 | { |
4082afcc | 13029 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13030 | { |
13031 | struct remote_state *rs = get_remote_state (); | |
13032 | ||
13033 | /* If the stub supports QAgent. */ | |
bba74b36 | 13034 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13035 | putpkt (rs->buf); |
13036 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13037 | ||
13038 | if (strcmp (rs->buf, "OK") == 0) | |
13039 | { | |
13040 | use_agent = use; | |
13041 | return 1; | |
13042 | } | |
13043 | } | |
13044 | ||
13045 | return 0; | |
13046 | } | |
13047 | ||
13048 | static int | |
fe38f897 | 13049 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 13050 | { |
4082afcc | 13051 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13052 | } |
13053 | ||
9accd112 MM |
13054 | struct btrace_target_info |
13055 | { | |
13056 | /* The ptid of the traced thread. */ | |
13057 | ptid_t ptid; | |
f4abbc16 MM |
13058 | |
13059 | /* The obtained branch trace configuration. */ | |
13060 | struct btrace_config conf; | |
9accd112 MM |
13061 | }; |
13062 | ||
f4abbc16 MM |
13063 | /* Reset our idea of our target's btrace configuration. */ |
13064 | ||
13065 | static void | |
13066 | remote_btrace_reset (void) | |
13067 | { | |
13068 | struct remote_state *rs = get_remote_state (); | |
13069 | ||
13070 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13071 | } | |
13072 | ||
f4abbc16 MM |
13073 | /* Synchronize the configuration with the target. */ |
13074 | ||
13075 | static void | |
13076 | btrace_sync_conf (const struct btrace_config *conf) | |
13077 | { | |
d33501a5 MM |
13078 | struct packet_config *packet; |
13079 | struct remote_state *rs; | |
13080 | char *buf, *pos, *endbuf; | |
13081 | ||
13082 | rs = get_remote_state (); | |
13083 | buf = rs->buf; | |
13084 | endbuf = buf + get_remote_packet_size (); | |
13085 | ||
13086 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13087 | if (packet_config_support (packet) == PACKET_ENABLE | |
13088 | && conf->bts.size != rs->btrace_config.bts.size) | |
13089 | { | |
13090 | pos = buf; | |
13091 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13092 | conf->bts.size); | |
13093 | ||
13094 | putpkt (buf); | |
13095 | getpkt (&buf, &rs->buf_size, 0); | |
13096 | ||
13097 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13098 | { | |
13099 | if (buf[0] == 'E' && buf[1] == '.') | |
13100 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13101 | else | |
13102 | error (_("Failed to configure the BTS buffer size.")); | |
13103 | } | |
13104 | ||
13105 | rs->btrace_config.bts.size = conf->bts.size; | |
13106 | } | |
b20a6524 MM |
13107 | |
13108 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13109 | if (packet_config_support (packet) == PACKET_ENABLE | |
13110 | && conf->pt.size != rs->btrace_config.pt.size) | |
13111 | { | |
13112 | pos = buf; | |
13113 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13114 | conf->pt.size); | |
13115 | ||
13116 | putpkt (buf); | |
13117 | getpkt (&buf, &rs->buf_size, 0); | |
13118 | ||
13119 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13120 | { | |
13121 | if (buf[0] == 'E' && buf[1] == '.') | |
13122 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13123 | else | |
13124 | error (_("Failed to configure the trace buffer size.")); | |
13125 | } | |
13126 | ||
13127 | rs->btrace_config.pt.size = conf->pt.size; | |
13128 | } | |
f4abbc16 MM |
13129 | } |
13130 | ||
13131 | /* Read the current thread's btrace configuration from the target and | |
13132 | store it into CONF. */ | |
13133 | ||
13134 | static void | |
13135 | btrace_read_config (struct btrace_config *conf) | |
13136 | { | |
9018be22 | 13137 | gdb::optional<gdb::char_vector> xml |
b7b030ad | 13138 | = target_read_stralloc (¤t_target, TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13139 | if (xml) |
13140 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13141 | } |
13142 | ||
c0272db5 TW |
13143 | /* Maybe reopen target btrace. */ |
13144 | ||
13145 | static void | |
13146 | remote_btrace_maybe_reopen (void) | |
13147 | { | |
13148 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13149 | struct thread_info *tp; |
13150 | int btrace_target_pushed = 0; | |
13151 | int warned = 0; | |
13152 | ||
5ed8105e PA |
13153 | scoped_restore_current_thread restore_thread; |
13154 | ||
c0272db5 TW |
13155 | ALL_NON_EXITED_THREADS (tp) |
13156 | { | |
13157 | set_general_thread (tp->ptid); | |
13158 | ||
13159 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13160 | btrace_read_config (&rs->btrace_config); | |
13161 | ||
13162 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13163 | continue; | |
13164 | ||
13165 | #if !defined (HAVE_LIBIPT) | |
13166 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13167 | { | |
13168 | if (!warned) | |
13169 | { | |
13170 | warned = 1; | |
c4e12631 MM |
13171 | warning (_("Target is recording using Intel Processor Trace " |
13172 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13173 | } |
13174 | ||
13175 | continue; | |
13176 | } | |
13177 | #endif /* !defined (HAVE_LIBIPT) */ | |
13178 | ||
13179 | /* Push target, once, but before anything else happens. This way our | |
13180 | changes to the threads will be cleaned up by unpushing the target | |
13181 | in case btrace_read_config () throws. */ | |
13182 | if (!btrace_target_pushed) | |
13183 | { | |
13184 | btrace_target_pushed = 1; | |
13185 | record_btrace_push_target (); | |
13186 | printf_filtered (_("Target is recording using %s.\n"), | |
13187 | btrace_format_string (rs->btrace_config.format)); | |
13188 | } | |
13189 | ||
13190 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13191 | tp->btrace.target->ptid = tp->ptid; | |
13192 | tp->btrace.target->conf = rs->btrace_config; | |
13193 | } | |
c0272db5 TW |
13194 | } |
13195 | ||
9accd112 MM |
13196 | /* Enable branch tracing. */ |
13197 | ||
13198 | static struct btrace_target_info * | |
f4abbc16 MM |
13199 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
13200 | const struct btrace_config *conf) | |
9accd112 MM |
13201 | { |
13202 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13203 | struct packet_config *packet = NULL; |
9accd112 MM |
13204 | struct remote_state *rs = get_remote_state (); |
13205 | char *buf = rs->buf; | |
13206 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13207 | ||
b20a6524 MM |
13208 | switch (conf->format) |
13209 | { | |
13210 | case BTRACE_FORMAT_BTS: | |
13211 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13212 | break; | |
13213 | ||
13214 | case BTRACE_FORMAT_PT: | |
13215 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13216 | break; | |
13217 | } | |
13218 | ||
13219 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13220 | error (_("Target does not support branch tracing.")); |
13221 | ||
f4abbc16 MM |
13222 | btrace_sync_conf (conf); |
13223 | ||
9accd112 MM |
13224 | set_general_thread (ptid); |
13225 | ||
13226 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13227 | putpkt (rs->buf); | |
13228 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13229 | ||
13230 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13231 | { | |
13232 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13233 | error (_("Could not enable branch tracing for %s: %s"), | |
13234 | target_pid_to_str (ptid), rs->buf + 2); | |
13235 | else | |
13236 | error (_("Could not enable branch tracing for %s."), | |
13237 | target_pid_to_str (ptid)); | |
13238 | } | |
13239 | ||
8d749320 | 13240 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13241 | tinfo->ptid = ptid; |
13242 | ||
f4abbc16 MM |
13243 | /* If we fail to read the configuration, we lose some information, but the |
13244 | tracing itself is not impacted. */ | |
492d29ea PA |
13245 | TRY |
13246 | { | |
13247 | btrace_read_config (&tinfo->conf); | |
13248 | } | |
13249 | CATCH (err, RETURN_MASK_ERROR) | |
13250 | { | |
13251 | if (err.message != NULL) | |
13252 | warning ("%s", err.message); | |
13253 | } | |
13254 | END_CATCH | |
f4abbc16 | 13255 | |
9accd112 MM |
13256 | return tinfo; |
13257 | } | |
13258 | ||
13259 | /* Disable branch tracing. */ | |
13260 | ||
13261 | static void | |
25e95349 TT |
13262 | remote_disable_btrace (struct target_ops *self, |
13263 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13264 | { |
13265 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13266 | struct remote_state *rs = get_remote_state (); | |
13267 | char *buf = rs->buf; | |
13268 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13269 | ||
4082afcc | 13270 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13271 | error (_("Target does not support branch tracing.")); |
13272 | ||
13273 | set_general_thread (tinfo->ptid); | |
13274 | ||
13275 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13276 | putpkt (rs->buf); | |
13277 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13278 | ||
13279 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13280 | { | |
13281 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13282 | error (_("Could not disable branch tracing for %s: %s"), | |
13283 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13284 | else | |
13285 | error (_("Could not disable branch tracing for %s."), | |
13286 | target_pid_to_str (tinfo->ptid)); | |
13287 | } | |
13288 | ||
13289 | xfree (tinfo); | |
13290 | } | |
13291 | ||
13292 | /* Teardown branch tracing. */ | |
13293 | ||
13294 | static void | |
1777056d TT |
13295 | remote_teardown_btrace (struct target_ops *self, |
13296 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13297 | { |
13298 | /* We must not talk to the target during teardown. */ | |
13299 | xfree (tinfo); | |
13300 | } | |
13301 | ||
13302 | /* Read the branch trace. */ | |
13303 | ||
969c39fb | 13304 | static enum btrace_error |
39c49f83 | 13305 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 13306 | struct btrace_data *btrace, |
969c39fb | 13307 | struct btrace_target_info *tinfo, |
9accd112 MM |
13308 | enum btrace_read_type type) |
13309 | { | |
13310 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13311 | const char *annex; |
9accd112 | 13312 | |
4082afcc | 13313 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13314 | error (_("Target does not support branch tracing.")); |
13315 | ||
13316 | #if !defined(HAVE_LIBEXPAT) | |
13317 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13318 | #endif | |
13319 | ||
13320 | switch (type) | |
13321 | { | |
864089d2 | 13322 | case BTRACE_READ_ALL: |
9accd112 MM |
13323 | annex = "all"; |
13324 | break; | |
864089d2 | 13325 | case BTRACE_READ_NEW: |
9accd112 MM |
13326 | annex = "new"; |
13327 | break; | |
969c39fb MM |
13328 | case BTRACE_READ_DELTA: |
13329 | annex = "delta"; | |
13330 | break; | |
9accd112 MM |
13331 | default: |
13332 | internal_error (__FILE__, __LINE__, | |
13333 | _("Bad branch tracing read type: %u."), | |
13334 | (unsigned int) type); | |
13335 | } | |
13336 | ||
9018be22 | 13337 | gdb::optional<gdb::char_vector> xml |
b7b030ad | 13338 | = target_read_stralloc (¤t_target, TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13339 | if (!xml) |
969c39fb | 13340 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13341 | |
9018be22 | 13342 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13343 | |
969c39fb | 13344 | return BTRACE_ERR_NONE; |
9accd112 MM |
13345 | } |
13346 | ||
f4abbc16 MM |
13347 | static const struct btrace_config * |
13348 | remote_btrace_conf (struct target_ops *self, | |
13349 | const struct btrace_target_info *tinfo) | |
13350 | { | |
13351 | return &tinfo->conf; | |
13352 | } | |
13353 | ||
ced63ec0 | 13354 | static int |
5436ff03 | 13355 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 13356 | { |
4082afcc PA |
13357 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13358 | == PACKET_ENABLE); | |
ced63ec0 GB |
13359 | } |
13360 | ||
9dd130a0 TT |
13361 | /* Implementation of to_load. */ |
13362 | ||
13363 | static void | |
9cbe5fff | 13364 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
13365 | { |
13366 | generic_load (name, from_tty); | |
13367 | } | |
13368 | ||
c78fa86a GB |
13369 | /* Accepts an integer PID; returns a string representing a file that |
13370 | can be opened on the remote side to get the symbols for the child | |
13371 | process. Returns NULL if the operation is not supported. */ | |
13372 | ||
13373 | static char * | |
13374 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
13375 | { | |
9018be22 | 13376 | static gdb::optional<gdb::char_vector> filename; |
835205d0 GB |
13377 | struct inferior *inf; |
13378 | char *annex = NULL; | |
c78fa86a GB |
13379 | |
13380 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13381 | return NULL; | |
13382 | ||
835205d0 GB |
13383 | inf = find_inferior_pid (pid); |
13384 | if (inf == NULL) | |
13385 | internal_error (__FILE__, __LINE__, | |
13386 | _("not currently attached to process %d"), pid); | |
13387 | ||
13388 | if (!inf->fake_pid_p) | |
13389 | { | |
13390 | const int annex_size = 9; | |
13391 | ||
224c3ddb | 13392 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13393 | xsnprintf (annex, annex_size, "%x", pid); |
13394 | } | |
13395 | ||
c78fa86a GB |
13396 | filename = target_read_stralloc (¤t_target, |
13397 | TARGET_OBJECT_EXEC_FILE, annex); | |
13398 | ||
9018be22 | 13399 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
13400 | } |
13401 | ||
750ce8d1 YQ |
13402 | /* Implement the to_can_do_single_step target_ops method. */ |
13403 | ||
13404 | static int | |
13405 | remote_can_do_single_step (struct target_ops *ops) | |
13406 | { | |
13407 | /* We can only tell whether target supports single step or not by | |
13408 | supported s and S vCont actions if the stub supports vContSupported | |
13409 | feature. If the stub doesn't support vContSupported feature, | |
13410 | we have conservatively to think target doesn't supports single | |
13411 | step. */ | |
13412 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13413 | { | |
13414 | struct remote_state *rs = get_remote_state (); | |
13415 | ||
13416 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13417 | remote_vcont_probe (rs); | |
13418 | ||
13419 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13420 | } | |
13421 | else | |
13422 | return 0; | |
13423 | } | |
13424 | ||
3a00c802 PA |
13425 | /* Implementation of the to_execution_direction method for the remote |
13426 | target. */ | |
13427 | ||
13428 | static enum exec_direction_kind | |
13429 | remote_execution_direction (struct target_ops *self) | |
13430 | { | |
13431 | struct remote_state *rs = get_remote_state (); | |
13432 | ||
13433 | return rs->last_resume_exec_dir; | |
13434 | } | |
13435 | ||
f6327dcb KB |
13436 | /* Return pointer to the thread_info struct which corresponds to |
13437 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13438 | ||
13439 | static struct thread_info * | |
13440 | remote_thread_handle_to_thread_info (struct target_ops *ops, | |
13441 | const gdb_byte *thread_handle, | |
13442 | int handle_len, | |
13443 | struct inferior *inf) | |
13444 | { | |
13445 | struct thread_info *tp; | |
13446 | ||
13447 | ALL_NON_EXITED_THREADS (tp) | |
13448 | { | |
7aabaf9d | 13449 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
13450 | |
13451 | if (tp->inf == inf && priv != NULL) | |
13452 | { | |
7aabaf9d | 13453 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 13454 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
13455 | handle_len, priv->thread_handle.size ()); |
13456 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
13457 | handle_len) == 0) |
13458 | return tp; | |
13459 | } | |
13460 | } | |
13461 | ||
13462 | return NULL; | |
13463 | } | |
13464 | ||
c906108c | 13465 | static void |
fba45db2 | 13466 | init_remote_ops (void) |
c906108c | 13467 | { |
c5aa993b | 13468 | remote_ops.to_shortname = "remote"; |
c906108c | 13469 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13470 | remote_ops.to_doc = |
c906108c | 13471 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13472 | Specify the serial device it is connected to\n\ |
13473 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13474 | remote_ops.to_open = remote_open; |
13475 | remote_ops.to_close = remote_close; | |
c906108c | 13476 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13477 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13478 | remote_ops.to_resume = remote_resume; |
85ad3aaf | 13479 | remote_ops.to_commit_resume = remote_commit_resume; |
c906108c SS |
13480 | remote_ops.to_wait = remote_wait; |
13481 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13482 | remote_ops.to_store_registers = remote_store_registers; | |
13483 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13484 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13485 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13486 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13487 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13488 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13489 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13490 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13491 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13492 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13493 | remote_ops.to_watchpoint_addr_within_range = |
13494 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13495 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13496 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13497 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13498 | remote_ops.to_region_ok_for_hw_watchpoint |
13499 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13500 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13501 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13502 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13503 | remote_ops.to_load = remote_load; |
c906108c | 13504 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13505 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13506 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13507 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13508 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13509 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13510 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13511 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13512 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13513 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13514 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13515 | remote_ops.to_interrupt = remote_interrupt; |
93692b58 | 13516 | remote_ops.to_pass_ctrlc = remote_pass_ctrlc; |
4b8a223f | 13517 | remote_ops.to_xfer_partial = remote_xfer_partial; |
09c98b44 | 13518 | remote_ops.to_get_memory_xfer_limit = remote_get_memory_xfer_limit; |
96baa820 | 13519 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13520 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13521 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13522 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13523 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13524 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13525 | remote_ops.to_has_memory = default_child_has_memory; | |
13526 | remote_ops.to_has_stack = default_child_has_stack; | |
13527 | remote_ops.to_has_registers = default_child_has_registers; | |
13528 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13529 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13530 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13531 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13532 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13533 | remote_ops.to_flash_erase = remote_flash_erase; |
13534 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13535 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13536 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13537 | remote_ops.to_can_async_p = remote_can_async_p; |
13538 | remote_ops.to_is_async_p = remote_is_async_p; | |
13539 | remote_ops.to_async = remote_async; | |
65706a29 | 13540 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13541 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13542 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13543 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13544 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13545 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13546 | remote_ops.to_supports_disable_randomization |
13547 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13548 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13549 | remote_ops.to_fileio_open = remote_hostio_open; |
13550 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13551 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13552 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13553 | remote_ops.to_fileio_close = remote_hostio_close; |
13554 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13555 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13556 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13557 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13558 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13559 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13560 | remote_ops.to_trace_init = remote_trace_init; |
13561 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13562 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13563 | remote_ops.to_download_trace_state_variable |
13564 | = remote_download_trace_state_variable; | |
d248b706 KY |
13565 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13566 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13567 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13568 | remote_ops.to_trace_start = remote_trace_start; | |
13569 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13570 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13571 | remote_ops.to_trace_stop = remote_trace_stop; |
13572 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13573 | remote_ops.to_get_trace_state_variable_value |
13574 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13575 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13576 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13577 | remote_ops.to_upload_trace_state_variables |
13578 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13579 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13580 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13581 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13582 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13583 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13584 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13585 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13586 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13587 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13588 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13589 | remote_ops.to_static_tracepoint_marker_at |
13590 | = remote_static_tracepoint_marker_at; | |
13591 | remote_ops.to_static_tracepoint_markers_by_strid | |
13592 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13593 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13594 | remote_ops.to_use_agent = remote_use_agent; |
13595 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13596 | remote_ops.to_enable_btrace = remote_enable_btrace; |
13597 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13598 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13599 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13600 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13601 | remote_ops.to_augmented_libraries_svr4_read = |
13602 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13603 | remote_ops.to_follow_fork = remote_follow_fork; |
13604 | remote_ops.to_follow_exec = remote_follow_exec; | |
13605 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13606 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13607 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13608 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13609 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13610 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
3a00c802 | 13611 | remote_ops.to_execution_direction = remote_execution_direction; |
f6327dcb KB |
13612 | remote_ops.to_thread_handle_to_thread_info = |
13613 | remote_thread_handle_to_thread_info; | |
c906108c SS |
13614 | } |
13615 | ||
13616 | /* Set up the extended remote vector by making a copy of the standard | |
13617 | remote vector and adding to it. */ | |
13618 | ||
13619 | static void | |
fba45db2 | 13620 | init_extended_remote_ops (void) |
c906108c SS |
13621 | { |
13622 | extended_remote_ops = remote_ops; | |
13623 | ||
0f71a2f6 | 13624 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13625 | extended_remote_ops.to_longname = |
c906108c | 13626 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13627 | extended_remote_ops.to_doc = |
c906108c | 13628 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13629 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13630 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13631 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13632 | extended_remote_ops.to_detach = extended_remote_detach; |
13633 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13634 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13635 | extended_remote_ops.to_supports_disable_randomization |
13636 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13637 | } |
13638 | ||
6426a772 | 13639 | static int |
6a109b6b | 13640 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13641 | { |
5d93a237 TT |
13642 | struct remote_state *rs = get_remote_state (); |
13643 | ||
3015c064 SM |
13644 | /* We don't go async if the user has explicitly prevented it with the |
13645 | "maint set target-async" command. */ | |
c6ebd6cf | 13646 | if (!target_async_permitted) |
75c99385 PA |
13647 | return 0; |
13648 | ||
23860348 | 13649 | /* We're async whenever the serial device is. */ |
5d93a237 | 13650 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13651 | } |
13652 | ||
13653 | static int | |
6a109b6b | 13654 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13655 | { |
5d93a237 TT |
13656 | struct remote_state *rs = get_remote_state (); |
13657 | ||
c6ebd6cf | 13658 | if (!target_async_permitted) |
75c99385 PA |
13659 | /* We only enable async when the user specifically asks for it. */ |
13660 | return 0; | |
13661 | ||
23860348 | 13662 | /* We're async whenever the serial device is. */ |
5d93a237 | 13663 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13664 | } |
13665 | ||
2acceee2 JM |
13666 | /* Pass the SERIAL event on and up to the client. One day this code |
13667 | will be able to delay notifying the client of an event until the | |
23860348 | 13668 | point where an entire packet has been received. */ |
2acceee2 | 13669 | |
2acceee2 JM |
13670 | static serial_event_ftype remote_async_serial_handler; |
13671 | ||
6426a772 | 13672 | static void |
819cc324 | 13673 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13674 | { |
2acceee2 JM |
13675 | /* Don't propogate error information up to the client. Instead let |
13676 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13677 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13678 | } |
13679 | ||
74531fed PA |
13680 | static void |
13681 | remote_async_inferior_event_handler (gdb_client_data data) | |
13682 | { | |
13683 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13684 | } | |
13685 | ||
2acceee2 | 13686 | static void |
6a3753b3 | 13687 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13688 | { |
5d93a237 TT |
13689 | struct remote_state *rs = get_remote_state (); |
13690 | ||
6a3753b3 | 13691 | if (enable) |
2acceee2 | 13692 | { |
88b496c3 | 13693 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13694 | |
13695 | /* If there are pending events in the stop reply queue tell the | |
13696 | event loop to process them. */ | |
13697 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13698 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13699 | /* For simplicity, below we clear the pending events token |
13700 | without remembering whether it is marked, so here we always | |
13701 | mark it. If there's actually no pending notification to | |
13702 | process, this ends up being a no-op (other than a spurious | |
13703 | event-loop wakeup). */ | |
13704 | if (target_is_non_stop_p ()) | |
13705 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13706 | } |
13707 | else | |
b7d2e916 PA |
13708 | { |
13709 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13710 | /* If the core is disabling async, it doesn't want to be |
13711 | disturbed with target events. Clear all async event sources | |
13712 | too. */ | |
b7d2e916 | 13713 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13714 | if (target_is_non_stop_p ()) |
13715 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13716 | } |
6426a772 JM |
13717 | } |
13718 | ||
65706a29 PA |
13719 | /* Implementation of the to_thread_events method. */ |
13720 | ||
13721 | static void | |
13722 | remote_thread_events (struct target_ops *ops, int enable) | |
13723 | { | |
13724 | struct remote_state *rs = get_remote_state (); | |
13725 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13726 | |
13727 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13728 | return; | |
13729 | ||
13730 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13731 | putpkt (rs->buf); | |
13732 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13733 | ||
13734 | switch (packet_ok (rs->buf, | |
13735 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13736 | { | |
13737 | case PACKET_OK: | |
13738 | if (strcmp (rs->buf, "OK") != 0) | |
13739 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13740 | break; | |
13741 | case PACKET_ERROR: | |
13742 | warning (_("Remote failure reply: %s"), rs->buf); | |
13743 | break; | |
13744 | case PACKET_UNKNOWN: | |
13745 | break; | |
13746 | } | |
13747 | } | |
13748 | ||
5a2468f5 | 13749 | static void |
981a3fb3 | 13750 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 13751 | { |
635c7e8a | 13752 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13753 | } |
13754 | ||
d471ea57 | 13755 | static void |
981a3fb3 | 13756 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 13757 | { |
37a105a1 | 13758 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13759 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13760 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13761 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13762 | |
2e783024 | 13763 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13764 | for (; list != NULL; list = list->next) |
13765 | if (strcmp (list->name, "Z-packet") == 0) | |
13766 | continue; | |
427c3a89 DJ |
13767 | else if (list->type == not_set_cmd) |
13768 | /* Alias commands are exactly like the original, except they | |
13769 | don't have the normal type. */ | |
13770 | continue; | |
13771 | else | |
37a105a1 | 13772 | { |
2e783024 | 13773 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13774 | |
112e8700 SM |
13775 | uiout->field_string ("name", list->name); |
13776 | uiout->text (": "); | |
427c3a89 | 13777 | if (list->type == show_cmd) |
f5c4fcd9 | 13778 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13779 | else |
13780 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13781 | } |
d471ea57 | 13782 | } |
5a2468f5 | 13783 | |
0f71a2f6 | 13784 | |
23860348 | 13785 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13786 | static void |
13787 | remote_new_objfile (struct objfile *objfile) | |
13788 | { | |
5d93a237 TT |
13789 | struct remote_state *rs = get_remote_state (); |
13790 | ||
13791 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13792 | remote_check_symbols (); |
dc8acb97 MS |
13793 | } |
13794 | ||
00bf0b85 SS |
13795 | /* Pull all the tracepoints defined on the target and create local |
13796 | data structures representing them. We don't want to create real | |
13797 | tracepoints yet, we don't want to mess up the user's existing | |
13798 | collection. */ | |
13799 | ||
13800 | static int | |
ab6617cc | 13801 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13802 | { |
00bf0b85 SS |
13803 | struct remote_state *rs = get_remote_state (); |
13804 | char *p; | |
d5551862 | 13805 | |
00bf0b85 SS |
13806 | /* Ask for a first packet of tracepoint definition. */ |
13807 | putpkt ("qTfP"); | |
13808 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13809 | p = rs->buf; | |
13810 | while (*p && *p != 'l') | |
d5551862 | 13811 | { |
00bf0b85 SS |
13812 | parse_tracepoint_definition (p, utpp); |
13813 | /* Ask for another packet of tracepoint definition. */ | |
13814 | putpkt ("qTsP"); | |
13815 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13816 | p = rs->buf; | |
d5551862 | 13817 | } |
00bf0b85 | 13818 | return 0; |
d5551862 SS |
13819 | } |
13820 | ||
00bf0b85 | 13821 | static int |
181e3713 TT |
13822 | remote_upload_trace_state_variables (struct target_ops *self, |
13823 | struct uploaded_tsv **utsvp) | |
d5551862 | 13824 | { |
00bf0b85 | 13825 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13826 | char *p; |
d5551862 | 13827 | |
00bf0b85 SS |
13828 | /* Ask for a first packet of variable definition. */ |
13829 | putpkt ("qTfV"); | |
d5551862 SS |
13830 | getpkt (&rs->buf, &rs->buf_size, 0); |
13831 | p = rs->buf; | |
00bf0b85 | 13832 | while (*p && *p != 'l') |
d5551862 | 13833 | { |
00bf0b85 SS |
13834 | parse_tsv_definition (p, utsvp); |
13835 | /* Ask for another packet of variable definition. */ | |
13836 | putpkt ("qTsV"); | |
d5551862 SS |
13837 | getpkt (&rs->buf, &rs->buf_size, 0); |
13838 | p = rs->buf; | |
13839 | } | |
00bf0b85 | 13840 | return 0; |
d5551862 SS |
13841 | } |
13842 | ||
c1e36e3e PA |
13843 | /* The "set/show range-stepping" show hook. */ |
13844 | ||
13845 | static void | |
13846 | show_range_stepping (struct ui_file *file, int from_tty, | |
13847 | struct cmd_list_element *c, | |
13848 | const char *value) | |
13849 | { | |
13850 | fprintf_filtered (file, | |
13851 | _("Debugger's willingness to use range stepping " | |
13852 | "is %s.\n"), value); | |
13853 | } | |
13854 | ||
13855 | /* The "set/show range-stepping" set hook. */ | |
13856 | ||
13857 | static void | |
eb4c3f4a | 13858 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
13859 | struct cmd_list_element *c) |
13860 | { | |
5d93a237 TT |
13861 | struct remote_state *rs = get_remote_state (); |
13862 | ||
c1e36e3e PA |
13863 | /* Whene enabling, check whether range stepping is actually |
13864 | supported by the target, and warn if not. */ | |
13865 | if (use_range_stepping) | |
13866 | { | |
5d93a237 | 13867 | if (rs->remote_desc != NULL) |
c1e36e3e | 13868 | { |
4082afcc | 13869 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13870 | remote_vcont_probe (rs); |
13871 | ||
4082afcc | 13872 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13873 | && rs->supports_vCont.r) |
13874 | return; | |
13875 | } | |
13876 | ||
13877 | warning (_("Range stepping is not supported by the current target")); | |
13878 | } | |
13879 | } | |
13880 | ||
c906108c | 13881 | void |
fba45db2 | 13882 | _initialize_remote (void) |
c906108c | 13883 | { |
9a7071a8 | 13884 | struct cmd_list_element *cmd; |
6f937416 | 13885 | const char *cmd_name; |
ea9c271d | 13886 | |
0f71a2f6 | 13887 | /* architecture specific data */ |
2bc416ba | 13888 | remote_gdbarch_data_handle = |
23860348 | 13889 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13890 | remote_g_packet_data_handle = |
13891 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13892 | |
94585166 DB |
13893 | remote_pspace_data |
13894 | = register_program_space_data_with_cleanup (NULL, | |
13895 | remote_pspace_data_cleanup); | |
13896 | ||
ea9c271d DJ |
13897 | /* Initialize the per-target state. At the moment there is only one |
13898 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13899 | time. */ |
13900 | remote_state = new_remote_state (); | |
ea9c271d | 13901 | |
c906108c SS |
13902 | init_remote_ops (); |
13903 | add_target (&remote_ops); | |
13904 | ||
13905 | init_extended_remote_ops (); | |
13906 | add_target (&extended_remote_ops); | |
cce74817 | 13907 | |
dc8acb97 | 13908 | /* Hook into new objfile notification. */ |
76727919 | 13909 | gdb::observers::new_objfile.attach (remote_new_objfile); |
5f4cf0bb YQ |
13910 | /* We're no longer interested in notification events of an inferior |
13911 | when it exits. */ | |
76727919 | 13912 | gdb::observers::inferior_exit.attach (discard_pending_stop_replies); |
dc8acb97 | 13913 | |
c906108c SS |
13914 | #if 0 |
13915 | init_remote_threadtests (); | |
13916 | #endif | |
13917 | ||
722247f1 | 13918 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13919 | /* set/show remote ... */ |
d471ea57 | 13920 | |
1bedd215 | 13921 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13922 | Remote protocol specific variables\n\ |
13923 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13924 | the packets being used"), |
cff3e48b | 13925 | &remote_set_cmdlist, "set remote ", |
23860348 | 13926 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13927 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13928 | Remote protocol specific variables\n\ |
13929 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13930 | the packets being used"), |
cff3e48b | 13931 | &remote_show_cmdlist, "show remote ", |
23860348 | 13932 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13933 | |
1a966eab AC |
13934 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13935 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13936 | Argument is a single section name (default: all loaded sections).\n\ |
13937 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13938 | &cmdlist); |
13939 | ||
1a966eab AC |
13940 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13941 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13942 | maintenance packet TEXT\n\ |
13943 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13944 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13945 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13946 | terminating `#' character and checksum."), |
c906108c SS |
13947 | &maintenancelist); |
13948 | ||
7915a72c AC |
13949 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13950 | Set whether to send break if interrupted."), _("\ | |
13951 | Show whether to send break if interrupted."), _("\ | |
13952 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13953 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13954 | &setlist, &showlist); |
9a7071a8 JB |
13955 | cmd_name = "remotebreak"; |
13956 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13957 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13958 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13959 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13960 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13961 | ||
13962 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13963 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13964 | _("\ | |
9a7071a8 JB |
13965 | Set interrupt sequence to remote target."), _("\ |
13966 | Show interrupt sequence to remote target."), _("\ | |
13967 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13968 | NULL, show_interrupt_sequence, | |
13969 | &remote_set_cmdlist, | |
13970 | &remote_show_cmdlist); | |
13971 | ||
13972 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13973 | &interrupt_on_connect, _("\ | |
13974 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13975 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13976 | If set, interrupt sequence is sent to remote target."), | |
13977 | NULL, NULL, | |
13978 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 13979 | |
23860348 | 13980 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 13981 | |
1a966eab AC |
13982 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
13983 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 13984 | &setlist); |
1a966eab AC |
13985 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
13986 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
13987 | &showlist); |
13988 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
13989 | set_memory_write_packet_size, _("\ |
13990 | Set the maximum number of bytes per memory-write packet.\n\ | |
13991 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13992 | default packet size. The actual limit is further reduced\n\ | |
13993 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13994 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13995 | &remote_set_cmdlist); |
13996 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
13997 | set_memory_read_packet_size, _("\ |
13998 | Set the maximum number of bytes per memory-read packet.\n\ | |
13999 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14000 | default packet size. The actual limit is further reduced\n\ | |
14001 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14002 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14003 | &remote_set_cmdlist); |
14004 | add_cmd ("memory-write-packet-size", no_class, | |
14005 | show_memory_write_packet_size, | |
1a966eab | 14006 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14007 | &remote_show_cmdlist); |
14008 | add_cmd ("memory-read-packet-size", no_class, | |
14009 | show_memory_read_packet_size, | |
1a966eab | 14010 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14011 | &remote_show_cmdlist); |
c906108c | 14012 | |
b3f42336 | 14013 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14014 | &remote_hw_watchpoint_limit, _("\ |
14015 | Set the maximum number of target hardware watchpoints."), _("\ | |
14016 | Show the maximum number of target hardware watchpoints."), _("\ | |
14017 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14018 | NULL, NULL, /* FIXME: i18n: The maximum |
14019 | number of target hardware | |
14020 | watchpoints is %s. */ | |
b3f42336 | 14021 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14022 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14023 | &remote_hw_watchpoint_length_limit, _("\ | |
14024 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14025 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14026 | Specify a negative limit for unlimited."), | |
14027 | NULL, NULL, /* FIXME: i18n: The maximum | |
14028 | length (in bytes) of a target | |
14029 | hardware watchpoint is %s. */ | |
14030 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14031 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14032 | &remote_hw_breakpoint_limit, _("\ |
14033 | Set the maximum number of target hardware breakpoints."), _("\ | |
14034 | Show the maximum number of target hardware breakpoints."), _("\ | |
14035 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14036 | NULL, NULL, /* FIXME: i18n: The maximum |
14037 | number of target hardware | |
14038 | breakpoints is %s. */ | |
b3f42336 | 14039 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14040 | |
1b493192 PA |
14041 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14042 | &remote_address_size, _("\ | |
4d28ad1e AC |
14043 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14044 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14045 | NULL, |
14046 | NULL, /* FIXME: i18n: */ | |
14047 | &setlist, &showlist); | |
c906108c | 14048 | |
ca4f7f8b PA |
14049 | init_all_packet_configs (); |
14050 | ||
444abaca | 14051 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14052 | "X", "binary-download", 1); |
0f71a2f6 | 14053 | |
444abaca | 14054 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14055 | "vCont", "verbose-resume", 0); |
506fb367 | 14056 | |
89be2091 DJ |
14057 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14058 | "QPassSignals", "pass-signals", 0); | |
14059 | ||
82075af2 JS |
14060 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14061 | "QCatchSyscalls", "catch-syscalls", 0); | |
14062 | ||
9b224c5e PA |
14063 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14064 | "QProgramSignals", "program-signals", 0); | |
14065 | ||
bc3b087d SDJ |
14066 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14067 | "QSetWorkingDir", "set-working-dir", 0); | |
14068 | ||
aefd8b33 SDJ |
14069 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14070 | "QStartupWithShell", "startup-with-shell", 0); | |
14071 | ||
0a2dde4a SDJ |
14072 | add_packet_config_cmd (&remote_protocol_packets |
14073 | [PACKET_QEnvironmentHexEncoded], | |
14074 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14075 | 0); | |
14076 | ||
14077 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14078 | "QEnvironmentReset", "environment-reset", | |
14079 | 0); | |
14080 | ||
14081 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14082 | "QEnvironmentUnset", "environment-unset", | |
14083 | 0); | |
14084 | ||
444abaca | 14085 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14086 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14087 | |
444abaca | 14088 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14089 | "P", "set-register", 1); |
d471ea57 | 14090 | |
444abaca | 14091 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14092 | "p", "fetch-register", 1); |
b96ec7ac | 14093 | |
444abaca | 14094 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14095 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14096 | |
444abaca | 14097 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14098 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14099 | |
444abaca | 14100 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14101 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14102 | |
444abaca | 14103 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14104 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14105 | |
444abaca | 14106 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14107 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14108 | |
0876f84a DJ |
14109 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14110 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14111 | |
c78fa86a GB |
14112 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14113 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14114 | ||
23181151 DJ |
14115 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14116 | "qXfer:features:read", "target-features", 0); | |
14117 | ||
cfa9d6d9 DJ |
14118 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14119 | "qXfer:libraries:read", "library-info", 0); | |
14120 | ||
2268b414 JK |
14121 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14122 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14123 | ||
fd79ecee DJ |
14124 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14125 | "qXfer:memory-map:read", "memory-map", 0); | |
14126 | ||
0e7f50da UW |
14127 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14128 | "qXfer:spu:read", "read-spu-object", 0); | |
14129 | ||
14130 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14131 | "qXfer:spu:write", "write-spu-object", 0); | |
14132 | ||
07e059b5 VP |
14133 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14134 | "qXfer:osdata:read", "osdata", 0); | |
14135 | ||
dc146f7c VP |
14136 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14137 | "qXfer:threads:read", "threads", 0); | |
14138 | ||
4aa995e1 PA |
14139 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14140 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14141 | ||
14142 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14143 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14144 | ||
b3b9301e PA |
14145 | add_packet_config_cmd |
14146 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14147 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14148 | |
169081d0 TG |
14149 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14150 | "qXfer:uib:read", "unwind-info-block", 0); | |
14151 | ||
444abaca | 14152 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14153 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14154 | 0); |
14155 | ||
711e434b PM |
14156 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14157 | "qGetTIBAddr", "get-thread-information-block-address", | |
14158 | 0); | |
14159 | ||
40ab02ce MS |
14160 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14161 | "bc", "reverse-continue", 0); | |
14162 | ||
14163 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14164 | "bs", "reverse-step", 0); | |
14165 | ||
be2a5f71 DJ |
14166 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14167 | "qSupported", "supported-packets", 0); | |
14168 | ||
08388c79 DE |
14169 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14170 | "qSearch:memory", "search-memory", 0); | |
14171 | ||
bd3eecc3 PA |
14172 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14173 | "qTStatus", "trace-status", 0); | |
14174 | ||
15a201c8 GB |
14175 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14176 | "vFile:setfs", "hostio-setfs", 0); | |
14177 | ||
a6b151f1 DJ |
14178 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14179 | "vFile:open", "hostio-open", 0); | |
14180 | ||
14181 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14182 | "vFile:pread", "hostio-pread", 0); | |
14183 | ||
14184 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14185 | "vFile:pwrite", "hostio-pwrite", 0); | |
14186 | ||
14187 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14188 | "vFile:close", "hostio-close", 0); | |
14189 | ||
14190 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14191 | "vFile:unlink", "hostio-unlink", 0); | |
14192 | ||
b9e7b9c3 UW |
14193 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14194 | "vFile:readlink", "hostio-readlink", 0); | |
14195 | ||
0a93529c GB |
14196 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14197 | "vFile:fstat", "hostio-fstat", 0); | |
14198 | ||
2d717e4f DJ |
14199 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14200 | "vAttach", "attach", 0); | |
14201 | ||
14202 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14203 | "vRun", "run", 0); | |
14204 | ||
a6f3e723 SL |
14205 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14206 | "QStartNoAckMode", "noack", 0); | |
14207 | ||
82f73884 PA |
14208 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14209 | "vKill", "kill", 0); | |
14210 | ||
0b16c5cf PA |
14211 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14212 | "qAttached", "query-attached", 0); | |
14213 | ||
782b2b07 | 14214 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14215 | "ConditionalTracepoints", |
14216 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14217 | |
14218 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14219 | "ConditionalBreakpoints", | |
14220 | "conditional-breakpoints", 0); | |
14221 | ||
d3ce09f5 SS |
14222 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14223 | "BreakpointCommands", | |
14224 | "breakpoint-commands", 0); | |
14225 | ||
7a697b8d SS |
14226 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14227 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14228 | |
409873ef SS |
14229 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14230 | "TracepointSource", "TracepointSource", 0); | |
14231 | ||
d914c394 SS |
14232 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14233 | "QAllow", "allow", 0); | |
14234 | ||
0fb4aa4b PA |
14235 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14236 | "StaticTracepoints", "static-tracepoints", 0); | |
14237 | ||
1e4d1764 YQ |
14238 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14239 | "InstallInTrace", "install-in-trace", 0); | |
14240 | ||
0fb4aa4b PA |
14241 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14242 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14243 | ||
78d85199 YQ |
14244 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14245 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14246 | ||
03583c20 UW |
14247 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14248 | "QDisableRandomization", "disable-randomization", 0); | |
14249 | ||
d1feda86 YQ |
14250 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14251 | "QAgent", "agent", 0); | |
14252 | ||
f6f899bf HAQ |
14253 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14254 | "QTBuffer:size", "trace-buffer-size", 0); | |
14255 | ||
9accd112 MM |
14256 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14257 | "Qbtrace:off", "disable-btrace", 0); | |
14258 | ||
14259 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14260 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14261 | ||
14262 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14263 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14264 | |
14265 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14266 | "qXfer:btrace", "read-btrace", 0); | |
14267 | ||
f4abbc16 MM |
14268 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14269 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14270 | ||
d33501a5 MM |
14271 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14272 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14273 | ||
73b8c1fd PA |
14274 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14275 | "multiprocess-feature", "multiprocess-feature", 0); | |
14276 | ||
f7e6eed5 PA |
14277 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14278 | "swbreak-feature", "swbreak-feature", 0); | |
14279 | ||
14280 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14281 | "hwbreak-feature", "hwbreak-feature", 0); | |
14282 | ||
89245bc0 DB |
14283 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14284 | "fork-event-feature", "fork-event-feature", 0); | |
14285 | ||
14286 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14287 | "vfork-event-feature", "vfork-event-feature", 0); | |
14288 | ||
b20a6524 MM |
14289 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14290 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14291 | ||
750ce8d1 YQ |
14292 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14293 | "vContSupported", "verbose-resume-supported", 0); | |
14294 | ||
94585166 DB |
14295 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14296 | "exec-event-feature", "exec-event-feature", 0); | |
14297 | ||
de979965 PA |
14298 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14299 | "vCtrlC", "ctrl-c", 0); | |
14300 | ||
65706a29 PA |
14301 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14302 | "QThreadEvents", "thread-events", 0); | |
14303 | ||
f2faf941 PA |
14304 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14305 | "N stop reply", "no-resumed-stop-reply", 0); | |
14306 | ||
0b736949 DB |
14307 | /* Assert that we've registered "set remote foo-packet" commands |
14308 | for all packet configs. */ | |
ca4f7f8b PA |
14309 | { |
14310 | int i; | |
14311 | ||
14312 | for (i = 0; i < PACKET_MAX; i++) | |
14313 | { | |
14314 | /* Ideally all configs would have a command associated. Some | |
14315 | still don't though. */ | |
14316 | int excepted; | |
14317 | ||
14318 | switch (i) | |
14319 | { | |
14320 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14321 | case PACKET_EnableDisableTracepoints_feature: |
14322 | case PACKET_tracenz_feature: | |
14323 | case PACKET_DisconnectedTracing_feature: | |
14324 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14325 | case PACKET_qCRC: |
14326 | /* Additions to this list need to be well justified: | |
14327 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14328 | excepted = 1; |
14329 | break; | |
14330 | default: | |
14331 | excepted = 0; | |
14332 | break; | |
14333 | } | |
14334 | ||
14335 | /* This catches both forgetting to add a config command, and | |
14336 | forgetting to remove a packet from the exception list. */ | |
14337 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14338 | } | |
14339 | } | |
14340 | ||
37a105a1 DJ |
14341 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14342 | Z sub-packet has its own set and show commands, but users may | |
14343 | have sets to this variable in their .gdbinit files (or in their | |
14344 | documentation). */ | |
e9e68a56 | 14345 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14346 | &remote_Z_packet_detect, _("\ |
14347 | Set use of remote protocol `Z' packets"), _("\ | |
14348 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14349 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14350 | packets."), |
e9e68a56 | 14351 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14352 | show_remote_protocol_Z_packet_cmd, |
14353 | /* FIXME: i18n: Use of remote protocol | |
14354 | `Z' packets is %s. */ | |
e9e68a56 | 14355 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14356 | |
a6b151f1 DJ |
14357 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14358 | Manipulate files on the remote system\n\ | |
14359 | Transfer files to and from the remote target system."), | |
14360 | &remote_cmdlist, "remote ", | |
14361 | 0 /* allow-unknown */, &cmdlist); | |
14362 | ||
14363 | add_cmd ("put", class_files, remote_put_command, | |
14364 | _("Copy a local file to the remote system."), | |
14365 | &remote_cmdlist); | |
14366 | ||
14367 | add_cmd ("get", class_files, remote_get_command, | |
14368 | _("Copy a remote file to the local system."), | |
14369 | &remote_cmdlist); | |
14370 | ||
14371 | add_cmd ("delete", class_files, remote_delete_command, | |
14372 | _("Delete a remote file."), | |
14373 | &remote_cmdlist); | |
14374 | ||
2d717e4f | 14375 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14376 | &remote_exec_file_var, _("\ |
2d717e4f | 14377 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14378 | Show the remote pathname for \"run\""), NULL, |
14379 | set_remote_exec_file, | |
14380 | show_remote_exec_file, | |
14381 | &remote_set_cmdlist, | |
14382 | &remote_show_cmdlist); | |
2d717e4f | 14383 | |
c1e36e3e PA |
14384 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14385 | &use_range_stepping, _("\ | |
14386 | Enable or disable range stepping."), _("\ | |
14387 | Show whether target-assisted range stepping is enabled."), _("\ | |
14388 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14389 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14390 | of issuing multiple single-steps. This speeds up source level\n\ | |
14391 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14392 | stepping is supported by the target. The default is on."), | |
14393 | set_range_stepping, | |
14394 | show_range_stepping, | |
14395 | &setlist, | |
14396 | &showlist); | |
14397 | ||
449092f6 CV |
14398 | /* Eventually initialize fileio. See fileio.c */ |
14399 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14400 | |
ba348170 | 14401 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14402 | special ptids with it set to != 0. */ |
ba348170 PA |
14403 | magic_null_ptid = ptid_build (42000, -1, 1); |
14404 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14405 | any_thread_ptid = ptid_build (42000, 0, 1); | |
c906108c | 14406 | } |