Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1988-2018 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.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 | |
6d820c5c | 125 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 126 | |
a14ed312 | 127 | static int readchar (int timeout); |
c906108c | 128 | |
c33e31fd PA |
129 | static void remote_serial_write (const char *str, int len); |
130 | ||
7d85a9c0 | 131 | static void remote_kill (struct target_ops *ops); |
c906108c | 132 | |
6a109b6b | 133 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 134 | |
6a109b6b | 135 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 136 | |
6a3753b3 | 137 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 138 | |
65706a29 PA |
139 | static void remote_thread_events (struct target_ops *ops, int enable); |
140 | ||
a14ed312 | 141 | static void interrupt_query (void); |
c906108c | 142 | |
d62a8ae2 SM |
143 | static void set_general_thread (ptid_t ptid); |
144 | static void set_continue_thread (ptid_t ptid); | |
c906108c | 145 | |
a14ed312 | 146 | static void get_offsets (void); |
c906108c | 147 | |
6d820c5c DJ |
148 | static void skip_frame (void); |
149 | ||
150 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 151 | |
a14ed312 | 152 | static int hexnumlen (ULONGEST num); |
c906108c | 153 | |
a14ed312 | 154 | static void init_remote_ops (void); |
c906108c | 155 | |
a14ed312 | 156 | static void init_extended_remote_ops (void); |
c906108c | 157 | |
1eab8a48 | 158 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 159 | |
a14ed312 | 160 | static int stubhex (int ch); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumstr (char *, ULONGEST); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 165 | |
a14ed312 | 166 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 167 | |
baa336ce | 168 | static void print_packet (const char *); |
c906108c | 169 | |
a14ed312 | 170 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 171 | |
39f77062 | 172 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 173 | |
baa336ce | 174 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 175 | |
a14ed312 | 176 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 177 | |
5a2468f5 | 178 | struct packet_config; |
5a2468f5 | 179 | |
a14ed312 | 180 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 181 | |
bb572ddd DJ |
182 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
183 | int from_tty, | |
184 | struct cmd_list_element *c, | |
185 | const char *value); | |
186 | ||
82f73884 | 187 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
256642e8 | 188 | static ptid_t read_ptid (const char *buf, const char **obuf); |
82f73884 | 189 | |
c378d69d | 190 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 191 | |
8bd200f1 TT |
192 | static int remote_get_trace_status (struct target_ops *self, |
193 | struct trace_status *ts); | |
d5551862 | 194 | |
ab6617cc TT |
195 | static int remote_upload_tracepoints (struct target_ops *self, |
196 | struct uploaded_tp **utpp); | |
00bf0b85 | 197 | |
181e3713 TT |
198 | static int remote_upload_trace_state_variables (struct target_ops *self, |
199 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 200 | |
c8d104ad PA |
201 | static void remote_query_supported (void); |
202 | ||
36d25514 | 203 | static void remote_check_symbols (void); |
c8d104ad | 204 | |
74531fed | 205 | struct stop_reply; |
74531fed | 206 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 207 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 208 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 209 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
210 | static int peek_stop_reply (ptid_t ptid); |
211 | ||
cbb8991c DB |
212 | struct threads_listing_context; |
213 | static void remove_new_fork_children (struct threads_listing_context *); | |
214 | ||
74531fed | 215 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 216 | |
e3594fd1 | 217 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 218 | |
d962ef82 DJ |
219 | static int remote_read_description_p (struct target_ops *target); |
220 | ||
176a6961 | 221 | static void remote_console_output (char *msg); |
dde08ee1 | 222 | |
efcc2da7 | 223 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 224 | |
78eff0ec | 225 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 226 | |
f4abbc16 MM |
227 | static void remote_btrace_reset (void); |
228 | ||
c0272db5 TW |
229 | static void remote_btrace_maybe_reopen (void); |
230 | ||
221e1a37 PA |
231 | static int stop_reply_queue_length (void); |
232 | ||
80152258 PA |
233 | static void readahead_cache_invalidate (void); |
234 | ||
048094ac PA |
235 | static void remote_unpush_and_throw (void); |
236 | ||
b6bb3468 PA |
237 | static struct remote_state *get_remote_state (void); |
238 | ||
a6b151f1 DJ |
239 | /* For "remote". */ |
240 | ||
241 | static struct cmd_list_element *remote_cmdlist; | |
242 | ||
bb572ddd DJ |
243 | /* For "set remote" and "show remote". */ |
244 | ||
245 | static struct cmd_list_element *remote_set_cmdlist; | |
246 | static struct cmd_list_element *remote_show_cmdlist; | |
247 | ||
d458bd84 PA |
248 | /* Stub vCont actions support. |
249 | ||
250 | Each field is a boolean flag indicating whether the stub reports | |
251 | support for the corresponding action. */ | |
252 | ||
253 | struct vCont_action_support | |
254 | { | |
255 | /* vCont;t */ | |
256 | int t; | |
c1e36e3e PA |
257 | |
258 | /* vCont;r */ | |
259 | int r; | |
750ce8d1 YQ |
260 | |
261 | /* vCont;s */ | |
262 | int s; | |
263 | ||
264 | /* vCont;S */ | |
265 | int S; | |
d458bd84 PA |
266 | }; |
267 | ||
c1e36e3e PA |
268 | /* Controls whether GDB is willing to use range stepping. */ |
269 | ||
270 | static int use_range_stepping = 1; | |
271 | ||
0d031856 TT |
272 | #define OPAQUETHREADBYTES 8 |
273 | ||
274 | /* a 64 bit opaque identifier */ | |
275 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
276 | ||
277 | /* About this many threadisds fit in a packet. */ | |
278 | ||
279 | #define MAXTHREADLISTRESULTS 32 | |
280 | ||
6f8976bf YQ |
281 | /* The max number of chars in debug output. The rest of chars are |
282 | omitted. */ | |
283 | ||
284 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
285 | ||
80152258 PA |
286 | /* Data for the vFile:pread readahead cache. */ |
287 | ||
288 | struct readahead_cache | |
289 | { | |
290 | /* The file descriptor for the file that is being cached. -1 if the | |
291 | cache is invalid. */ | |
292 | int fd; | |
293 | ||
294 | /* The offset into the file that the cache buffer corresponds | |
295 | to. */ | |
296 | ULONGEST offset; | |
297 | ||
298 | /* The buffer holding the cache contents. */ | |
299 | gdb_byte *buf; | |
300 | /* The buffer's size. We try to read as much as fits into a packet | |
301 | at a time. */ | |
302 | size_t bufsize; | |
303 | ||
304 | /* Cache hit and miss counters. */ | |
305 | ULONGEST hit_count; | |
306 | ULONGEST miss_count; | |
307 | }; | |
308 | ||
ea9c271d DJ |
309 | /* Description of the remote protocol state for the currently |
310 | connected target. This is per-target state, and independent of the | |
311 | selected architecture. */ | |
312 | ||
313 | struct remote_state | |
314 | { | |
315 | /* A buffer to use for incoming packets, and its current size. The | |
316 | buffer is grown dynamically for larger incoming packets. | |
317 | Outgoing packets may also be constructed in this buffer. | |
318 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
319 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
320 | packets. */ | |
321 | char *buf; | |
322 | long buf_size; | |
be2a5f71 | 323 | |
1e51243a PA |
324 | /* True if we're going through initial connection setup (finding out |
325 | about the remote side's threads, relocating symbols, etc.). */ | |
326 | int starting_up; | |
327 | ||
be2a5f71 DJ |
328 | /* If we negotiated packet size explicitly (and thus can bypass |
329 | heuristics for the largest packet size that will not overflow | |
330 | a buffer in the stub), this will be set to that packet size. | |
331 | Otherwise zero, meaning to use the guessed size. */ | |
332 | long explicit_packet_size; | |
2d717e4f DJ |
333 | |
334 | /* remote_wait is normally called when the target is running and | |
335 | waits for a stop reply packet. But sometimes we need to call it | |
336 | when the target is already stopped. We can send a "?" packet | |
337 | and have remote_wait read the response. Or, if we already have | |
338 | the response, we can stash it in BUF and tell remote_wait to | |
339 | skip calling getpkt. This flag is set when BUF contains a | |
340 | stop reply packet and the target is not waiting. */ | |
341 | int cached_wait_status; | |
a6f3e723 SL |
342 | |
343 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
344 | expect acks from each other. The connection is assumed to be | |
345 | reliable. */ | |
346 | int noack_mode; | |
82f73884 PA |
347 | |
348 | /* True if we're connected in extended remote mode. */ | |
349 | int extended; | |
350 | ||
e24a49d8 PA |
351 | /* True if we resumed the target and we're waiting for the target to |
352 | stop. In the mean time, we can't start another command/query. | |
353 | The remote server wouldn't be ready to process it, so we'd | |
354 | timeout waiting for a reply that would never come and eventually | |
355 | we'd close the connection. This can happen in asynchronous mode | |
356 | because we allow GDB commands while the target is running. */ | |
357 | int waiting_for_stop_reply; | |
74531fed | 358 | |
d458bd84 PA |
359 | /* The status of the stub support for the various vCont actions. */ |
360 | struct vCont_action_support supports_vCont; | |
782b2b07 | 361 | |
3a29589a DJ |
362 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
363 | responded to that. */ | |
364 | int ctrlc_pending_p; | |
5d93a237 | 365 | |
048094ac PA |
366 | /* True if we saw a Ctrl-C while reading or writing from/to the |
367 | remote descriptor. At that point it is not safe to send a remote | |
368 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
369 | process it once we're done with sending/receiving the current | |
370 | packet, which should be shortly. If however that takes too long, | |
371 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
372 | int got_ctrlc_during_io; | |
373 | ||
5d93a237 TT |
374 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
375 | remote_open knows that we don't have a file open when the program | |
376 | starts. */ | |
377 | struct serial *remote_desc; | |
47f8a51d TT |
378 | |
379 | /* These are the threads which we last sent to the remote system. The | |
380 | TID member will be -1 for all or -2 for not sent yet. */ | |
381 | ptid_t general_thread; | |
382 | ptid_t continue_thread; | |
262e1174 TT |
383 | |
384 | /* This is the traceframe which we last selected on the remote system. | |
385 | It will be -1 if no traceframe is selected. */ | |
386 | int remote_traceframe_number; | |
747dc59d TT |
387 | |
388 | char *last_pass_packet; | |
5e4a05c4 TT |
389 | |
390 | /* The last QProgramSignals packet sent to the target. We bypass | |
391 | sending a new program signals list down to the target if the new | |
392 | packet is exactly the same as the last we sent. IOW, we only let | |
393 | the target know about program signals list changes. */ | |
394 | char *last_program_signals_packet; | |
b73be471 TT |
395 | |
396 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
397 | |
398 | int last_sent_step; | |
8e88304f | 399 | |
3a00c802 PA |
400 | /* The execution direction of the last resume we got. */ |
401 | enum exec_direction_kind last_resume_exec_dir; | |
402 | ||
8e88304f TT |
403 | char *finished_object; |
404 | char *finished_annex; | |
405 | ULONGEST finished_offset; | |
b80fafe3 TT |
406 | |
407 | /* Should we try the 'ThreadInfo' query packet? | |
408 | ||
409 | This variable (NOT available to the user: auto-detect only!) | |
410 | determines whether GDB will use the new, simpler "ThreadInfo" | |
411 | query or the older, more complex syntax for thread queries. | |
412 | This is an auto-detect variable (set to true at each connect, | |
413 | and set to false when the target fails to recognize it). */ | |
414 | int use_threadinfo_query; | |
415 | int use_threadextra_query; | |
88b496c3 | 416 | |
0d031856 TT |
417 | threadref echo_nextthread; |
418 | threadref nextthread; | |
419 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
420 | |
421 | /* The state of remote notification. */ | |
422 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
423 | |
424 | /* The branch trace configuration. */ | |
425 | struct btrace_config btrace_config; | |
15a201c8 GB |
426 | |
427 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
428 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
429 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
430 | has yet been sent. */ | |
431 | int fs_pid; | |
80152258 PA |
432 | |
433 | /* A readahead cache for vFile:pread. Often, reading a binary | |
434 | involves a sequence of small reads. E.g., when parsing an ELF | |
435 | file. A readahead cache helps mostly the case of remote | |
436 | debugging on a connection with higher latency, due to the | |
437 | request/reply nature of the RSP. We only cache data for a single | |
438 | file descriptor at a time. */ | |
439 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
440 | }; |
441 | ||
7aabaf9d SM |
442 | /* Private data that we'll store in (struct thread_info)->priv. */ |
443 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 444 | { |
7aabaf9d SM |
445 | std::string extra; |
446 | std::string name; | |
447 | int core = -1; | |
799a2abe | 448 | |
f6327dcb KB |
449 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
450 | sequence of bytes. */ | |
7aabaf9d | 451 | gdb::byte_vector thread_handle; |
f6327dcb | 452 | |
799a2abe | 453 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 454 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
455 | |
456 | /* This is set to the data address of the access causing the target | |
457 | to stop for a watchpoint. */ | |
7aabaf9d | 458 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
459 | |
460 | /* Fields used by the vCont action coalescing implemented in | |
461 | remote_resume / remote_commit_resume. remote_resume stores each | |
462 | thread's last resume request in these fields, so that a later | |
463 | remote_commit_resume knows which is the proper action for this | |
464 | thread to include in the vCont packet. */ | |
465 | ||
466 | /* True if the last target_resume call for this thread was a step | |
467 | request, false if a continue request. */ | |
7aabaf9d | 468 | int last_resume_step = 0; |
85ad3aaf PA |
469 | |
470 | /* The signal specified in the last target_resume call for this | |
471 | thread. */ | |
7aabaf9d | 472 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
473 | |
474 | /* Whether this thread was already vCont-resumed on the remote | |
475 | side. */ | |
7aabaf9d | 476 | int vcont_resumed = 0; |
dc146f7c VP |
477 | }; |
478 | ||
ea9c271d DJ |
479 | /* This data could be associated with a target, but we do not always |
480 | have access to the current target when we need it, so for now it is | |
481 | static. This will be fine for as long as only one target is in use | |
482 | at a time. */ | |
cf792862 | 483 | static struct remote_state *remote_state; |
ea9c271d DJ |
484 | |
485 | static struct remote_state * | |
0b83947e | 486 | get_remote_state_raw (void) |
ea9c271d | 487 | { |
cf792862 TT |
488 | return remote_state; |
489 | } | |
490 | ||
491 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
492 | return it. */ | |
493 | ||
494 | static struct remote_state * | |
495 | new_remote_state (void) | |
496 | { | |
497 | struct remote_state *result = XCNEW (struct remote_state); | |
498 | ||
499 | /* The default buffer size is unimportant; it will be expanded | |
500 | whenever a larger buffer is needed. */ | |
501 | result->buf_size = 400; | |
224c3ddb | 502 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 503 | result->remote_traceframe_number = -1; |
b73be471 | 504 | result->last_sent_signal = GDB_SIGNAL_0; |
3a00c802 | 505 | result->last_resume_exec_dir = EXEC_FORWARD; |
15a201c8 | 506 | result->fs_pid = -1; |
cf792862 TT |
507 | |
508 | return result; | |
ea9c271d DJ |
509 | } |
510 | ||
511 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 512 | |
ad10f812 AC |
513 | struct packet_reg |
514 | { | |
515 | long offset; /* Offset into G packet. */ | |
516 | long regnum; /* GDB's internal register number. */ | |
517 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 518 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 519 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 520 | at present. */ |
f5656ead | 521 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 522 | at present. */ |
ad10f812 AC |
523 | }; |
524 | ||
ea9c271d | 525 | struct remote_arch_state |
d01949b6 | 526 | { |
ad10f812 AC |
527 | /* Description of the remote protocol registers. */ |
528 | long sizeof_g_packet; | |
b323314b AC |
529 | |
530 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 531 | (making an array gdbarch_num_regs in size). */ |
b323314b | 532 | struct packet_reg *regs; |
ad10f812 | 533 | |
d01949b6 AC |
534 | /* This is the size (in chars) of the first response to the ``g'' |
535 | packet. It is used as a heuristic when determining the maximum | |
536 | size of memory-read and memory-write packets. A target will | |
537 | typically only reserve a buffer large enough to hold the ``g'' | |
538 | packet. The size does not include packet overhead (headers and | |
23860348 | 539 | trailers). */ |
d01949b6 AC |
540 | long actual_register_packet_size; |
541 | ||
542 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 543 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
544 | long remote_packet_size; |
545 | }; | |
546 | ||
35b1e5cc SS |
547 | /* Utility: generate error from an incoming stub packet. */ |
548 | static void | |
549 | trace_error (char *buf) | |
550 | { | |
551 | if (*buf++ != 'E') | |
552 | return; /* not an error msg */ | |
553 | switch (*buf) | |
554 | { | |
555 | case '1': /* malformed packet error */ | |
556 | if (*++buf == '0') /* general case: */ | |
557 | error (_("remote.c: error in outgoing packet.")); | |
558 | else | |
559 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
560 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
561 | default: |
562 | error (_("Target returns error code '%s'."), buf); | |
563 | } | |
564 | } | |
565 | ||
566 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 567 | |
35b1e5cc | 568 | static char * |
b6bb3468 | 569 | remote_get_noisy_reply () |
35b1e5cc | 570 | { |
b6bb3468 PA |
571 | struct remote_state *rs = get_remote_state (); |
572 | ||
35b1e5cc SS |
573 | do /* Loop on reply from remote stub. */ |
574 | { | |
575 | char *buf; | |
a744cf53 | 576 | |
0df8b418 | 577 | QUIT; /* Allow user to bail out with ^C. */ |
b6bb3468 PA |
578 | getpkt (&rs->buf, &rs->buf_size, 0); |
579 | buf = rs->buf; | |
ad91cd99 | 580 | if (buf[0] == 'E') |
35b1e5cc | 581 | trace_error (buf); |
61012eef | 582 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
583 | { |
584 | ULONGEST ul; | |
585 | CORE_ADDR from, to, org_to; | |
256642e8 | 586 | const char *p, *pp; |
dde08ee1 | 587 | int adjusted_size = 0; |
7556d4a4 | 588 | int relocated = 0; |
dde08ee1 PA |
589 | |
590 | p = buf + strlen ("qRelocInsn:"); | |
591 | pp = unpack_varlen_hex (p, &ul); | |
592 | if (*pp != ';') | |
cb91c06a | 593 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
594 | from = ul; |
595 | ||
596 | p = pp + 1; | |
a9cbf802 | 597 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
598 | to = ul; |
599 | ||
600 | org_to = to; | |
601 | ||
492d29ea | 602 | TRY |
dde08ee1 | 603 | { |
f5656ead | 604 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 605 | relocated = 1; |
dde08ee1 | 606 | } |
492d29ea | 607 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
608 | { |
609 | if (ex.error == MEMORY_ERROR) | |
610 | { | |
611 | /* Propagate memory errors silently back to the | |
612 | target. The stub may have limited the range of | |
613 | addresses we can write to, for example. */ | |
614 | } | |
615 | else | |
616 | { | |
617 | /* Something unexpectedly bad happened. Be verbose | |
618 | so we can tell what, and propagate the error back | |
619 | to the stub, so it doesn't get stuck waiting for | |
620 | a response. */ | |
621 | exception_fprintf (gdb_stderr, ex, | |
622 | _("warning: relocating instruction: ")); | |
623 | } | |
624 | putpkt ("E01"); | |
625 | } | |
492d29ea | 626 | END_CATCH |
7556d4a4 PA |
627 | |
628 | if (relocated) | |
dde08ee1 PA |
629 | { |
630 | adjusted_size = to - org_to; | |
631 | ||
b6bb3468 | 632 | xsnprintf (buf, rs->buf_size, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
633 | putpkt (buf); |
634 | } | |
dde08ee1 | 635 | } |
ad91cd99 | 636 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
637 | remote_console_output (buf + 1); /* 'O' message from stub */ |
638 | else | |
0df8b418 | 639 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
640 | } |
641 | while (1); | |
642 | } | |
3c3bea1c | 643 | |
d01949b6 AC |
644 | /* Handle for retreving the remote protocol data from gdbarch. */ |
645 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
646 | ||
ea9c271d | 647 | static struct remote_arch_state * |
5cd63fda | 648 | get_remote_arch_state (struct gdbarch *gdbarch) |
d01949b6 | 649 | { |
5cd63fda | 650 | gdb_assert (gdbarch != NULL); |
19ba03f4 | 651 | return ((struct remote_arch_state *) |
5cd63fda | 652 | gdbarch_data (gdbarch, remote_gdbarch_data_handle)); |
d01949b6 AC |
653 | } |
654 | ||
0b83947e DJ |
655 | /* Fetch the global remote target state. */ |
656 | ||
657 | static struct remote_state * | |
658 | get_remote_state (void) | |
659 | { | |
660 | /* Make sure that the remote architecture state has been | |
661 | initialized, because doing so might reallocate rs->buf. Any | |
662 | function which calls getpkt also needs to be mindful of changes | |
663 | to rs->buf, but this call limits the number of places which run | |
664 | into trouble. */ | |
5cd63fda | 665 | get_remote_arch_state (target_gdbarch ()); |
0b83947e DJ |
666 | |
667 | return get_remote_state_raw (); | |
668 | } | |
669 | ||
94585166 DB |
670 | /* Cleanup routine for the remote module's pspace data. */ |
671 | ||
672 | static void | |
673 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
674 | { | |
19ba03f4 | 675 | char *remote_exec_file = (char *) arg; |
94585166 DB |
676 | |
677 | xfree (remote_exec_file); | |
678 | } | |
679 | ||
680 | /* Fetch the remote exec-file from the current program space. */ | |
681 | ||
682 | static const char * | |
683 | get_remote_exec_file (void) | |
684 | { | |
685 | char *remote_exec_file; | |
686 | ||
19ba03f4 SM |
687 | remote_exec_file |
688 | = (char *) program_space_data (current_program_space, | |
689 | remote_pspace_data); | |
94585166 DB |
690 | if (remote_exec_file == NULL) |
691 | return ""; | |
692 | ||
693 | return remote_exec_file; | |
694 | } | |
695 | ||
696 | /* Set the remote exec file for PSPACE. */ | |
697 | ||
698 | static void | |
699 | set_pspace_remote_exec_file (struct program_space *pspace, | |
700 | char *remote_exec_file) | |
701 | { | |
19ba03f4 | 702 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
703 | |
704 | xfree (old_file); | |
705 | set_program_space_data (pspace, remote_pspace_data, | |
706 | xstrdup (remote_exec_file)); | |
707 | } | |
708 | ||
709 | /* The "set/show remote exec-file" set command hook. */ | |
710 | ||
711 | static void | |
eb4c3f4a | 712 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
713 | struct cmd_list_element *c) |
714 | { | |
715 | gdb_assert (remote_exec_file_var != NULL); | |
716 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
717 | } | |
718 | ||
719 | /* The "set/show remote exec-file" show command hook. */ | |
720 | ||
721 | static void | |
722 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
723 | struct cmd_list_element *cmd, const char *value) | |
724 | { | |
725 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
726 | } | |
727 | ||
74ca34ce DJ |
728 | static int |
729 | compare_pnums (const void *lhs_, const void *rhs_) | |
730 | { | |
19ba03f4 SM |
731 | const struct packet_reg * const *lhs |
732 | = (const struct packet_reg * const *) lhs_; | |
733 | const struct packet_reg * const *rhs | |
734 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
735 | |
736 | if ((*lhs)->pnum < (*rhs)->pnum) | |
737 | return -1; | |
738 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
739 | return 0; | |
740 | else | |
741 | return 1; | |
742 | } | |
743 | ||
c21236dc PA |
744 | static int |
745 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 746 | { |
74ca34ce | 747 | int regnum, num_remote_regs, offset; |
74ca34ce | 748 | struct packet_reg **remote_regs; |
ea9c271d | 749 | |
4a22f64d | 750 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 751 | { |
c21236dc | 752 | struct packet_reg *r = ®s[regnum]; |
baef701f | 753 | |
4a22f64d | 754 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
755 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
756 | r->pnum = -1; | |
757 | else | |
758 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
759 | ||
b323314b | 760 | r->regnum = regnum; |
74ca34ce DJ |
761 | } |
762 | ||
763 | /* Define the g/G packet format as the contents of each register | |
764 | with a remote protocol number, in order of ascending protocol | |
765 | number. */ | |
766 | ||
224c3ddb | 767 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 768 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 769 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 770 | regnum++) |
c21236dc PA |
771 | if (regs[regnum].pnum != -1) |
772 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 773 | |
74ca34ce DJ |
774 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
775 | compare_pnums); | |
776 | ||
777 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
778 | { | |
779 | remote_regs[regnum]->in_g_packet = 1; | |
780 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 781 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
782 | } |
783 | ||
c21236dc PA |
784 | return offset; |
785 | } | |
786 | ||
787 | /* Given the architecture described by GDBARCH, return the remote | |
788 | protocol register's number and the register's offset in the g/G | |
789 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
790 | If the target does not have a mapping for REGNUM, return false, | |
791 | otherwise, return true. */ | |
792 | ||
793 | int | |
794 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
795 | int *pnum, int *poffset) | |
796 | { | |
c21236dc PA |
797 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
798 | ||
b80406ac | 799 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 800 | |
b80406ac | 801 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
802 | |
803 | *pnum = regs[regnum].pnum; | |
804 | *poffset = regs[regnum].offset; | |
805 | ||
c21236dc PA |
806 | return *pnum != -1; |
807 | } | |
808 | ||
809 | static void * | |
810 | init_remote_state (struct gdbarch *gdbarch) | |
811 | { | |
812 | struct remote_state *rs = get_remote_state_raw (); | |
813 | struct remote_arch_state *rsa; | |
814 | ||
815 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
816 | ||
817 | /* Use the architecture to build a regnum<->pnum table, which will be | |
818 | 1:1 unless a feature set specifies otherwise. */ | |
819 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
820 | gdbarch_num_regs (gdbarch), | |
821 | struct packet_reg); | |
822 | ||
74ca34ce DJ |
823 | /* Record the maximum possible size of the g packet - it may turn out |
824 | to be smaller. */ | |
c21236dc | 825 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 826 | |
0df8b418 | 827 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
828 | remote stubs have a hardwired buffer size of 400 bytes |
829 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
830 | as the maximum packet-size to ensure that the packet and an extra | |
831 | NUL character can always fit in the buffer. This stops GDB | |
832 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
833 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
834 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 835 | |
ea9c271d DJ |
836 | /* This one is filled in when a ``g'' packet is received. */ |
837 | rsa->actual_register_packet_size = 0; | |
838 | ||
839 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
840 | default, adjust the size accordingly. Remember that each byte is |
841 | encoded as two characters. 32 is the overhead for the packet | |
842 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 843 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 844 | little. */ |
ea9c271d DJ |
845 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
846 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 847 | |
ea9c271d DJ |
848 | /* Make sure that the packet buffer is plenty big enough for |
849 | this architecture. */ | |
850 | if (rs->buf_size < rsa->remote_packet_size) | |
851 | { | |
852 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 853 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 854 | } |
6d820c5c | 855 | |
ea9c271d DJ |
856 | return rsa; |
857 | } | |
858 | ||
859 | /* Return the current allowed size of a remote packet. This is | |
860 | inferred from the current architecture, and should be used to | |
861 | limit the length of outgoing packets. */ | |
862 | static long | |
863 | get_remote_packet_size (void) | |
864 | { | |
be2a5f71 | 865 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 866 | remote_arch_state *rsa = get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 867 | |
be2a5f71 DJ |
868 | if (rs->explicit_packet_size) |
869 | return rs->explicit_packet_size; | |
870 | ||
ea9c271d | 871 | return rsa->remote_packet_size; |
d01949b6 AC |
872 | } |
873 | ||
ad10f812 | 874 | static struct packet_reg * |
5cd63fda PA |
875 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
876 | long regnum) | |
ad10f812 | 877 | { |
5cd63fda | 878 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
879 | return NULL; |
880 | else | |
ad10f812 | 881 | { |
ea9c271d | 882 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 883 | |
b323314b AC |
884 | gdb_assert (r->regnum == regnum); |
885 | return r; | |
ad10f812 | 886 | } |
ad10f812 AC |
887 | } |
888 | ||
889 | static struct packet_reg * | |
5cd63fda PA |
890 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
891 | LONGEST pnum) | |
ad10f812 | 892 | { |
b323314b | 893 | int i; |
a744cf53 | 894 | |
5cd63fda | 895 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 896 | { |
ea9c271d | 897 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 898 | |
b323314b AC |
899 | if (r->pnum == pnum) |
900 | return r; | |
ad10f812 AC |
901 | } |
902 | return NULL; | |
d01949b6 AC |
903 | } |
904 | ||
c906108c SS |
905 | static struct target_ops remote_ops; |
906 | ||
907 | static struct target_ops extended_remote_ops; | |
908 | ||
6426a772 JM |
909 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
910 | ``forever'' still use the normal timeout mechanism. This is | |
911 | currently used by the ASYNC code to guarentee that target reads | |
912 | during the initial connect always time-out. Once getpkt has been | |
913 | modified to return a timeout indication and, in turn | |
914 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 915 | this can go away. */ |
6426a772 JM |
916 | static int wait_forever_enabled_p = 1; |
917 | ||
9a7071a8 JB |
918 | /* Allow the user to specify what sequence to send to the remote |
919 | when he requests a program interruption: Although ^C is usually | |
920 | what remote systems expect (this is the default, here), it is | |
921 | sometimes preferable to send a break. On other systems such | |
922 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
923 | is required in order to interrupt the execution. */ | |
924 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
925 | const char interrupt_sequence_break[] = "BREAK"; | |
926 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 927 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
928 | { |
929 | interrupt_sequence_control_c, | |
930 | interrupt_sequence_break, | |
931 | interrupt_sequence_break_g, | |
932 | NULL | |
933 | }; | |
934 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
935 | ||
936 | static void | |
937 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
938 | struct cmd_list_element *c, | |
939 | const char *value) | |
940 | { | |
941 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
942 | fprintf_filtered (file, | |
943 | _("Send the ASCII ETX character (Ctrl-c) " | |
944 | "to the remote target to interrupt the " | |
945 | "execution of the program.\n")); | |
946 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
947 | fprintf_filtered (file, | |
948 | _("send a break signal to the remote target " | |
949 | "to interrupt the execution of the program.\n")); | |
950 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
951 | fprintf_filtered (file, | |
952 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
953 | "the remote target to interrupt the execution " | |
954 | "of Linux kernel.\n")); | |
955 | else | |
956 | internal_error (__FILE__, __LINE__, | |
957 | _("Invalid value for interrupt_sequence_mode: %s."), | |
958 | interrupt_sequence_mode); | |
959 | } | |
6426a772 | 960 | |
9a7071a8 JB |
961 | /* This boolean variable specifies whether interrupt_sequence is sent |
962 | to the remote target when gdb connects to it. | |
963 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
964 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
965 | static int interrupt_on_connect = 0; | |
c906108c | 966 | |
9a7071a8 JB |
967 | /* This variable is used to implement the "set/show remotebreak" commands. |
968 | Since these commands are now deprecated in favor of "set/show remote | |
969 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
970 | static int remote_break; |
971 | ||
9a7071a8 | 972 | static void |
eb4c3f4a | 973 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
974 | { |
975 | if (remote_break) | |
976 | interrupt_sequence_mode = interrupt_sequence_break; | |
977 | else | |
978 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
979 | } | |
980 | ||
981 | static void | |
982 | show_remotebreak (struct ui_file *file, int from_tty, | |
983 | struct cmd_list_element *c, | |
984 | const char *value) | |
985 | { | |
986 | } | |
987 | ||
c906108c SS |
988 | /* This variable sets the number of bits in an address that are to be |
989 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 990 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
991 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
992 | initial implementation of remote.c restricted the address sent in | |
993 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
994 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
995 | address was never sent. Since fixing this bug may cause a break in | |
996 | some remote targets this variable is principly provided to | |
23860348 | 997 | facilitate backward compatibility. */ |
c906108c | 998 | |
883b9c6c | 999 | static unsigned int remote_address_size; |
c906108c | 1000 | |
11cf8741 | 1001 | \f |
11cf8741 | 1002 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1003 | memory read/write packet. MIN (rsa->remote_packet_size, |
1004 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1005 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1006 | (speed up transfers). The variables ``preferred_*'' (the user |
1007 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1008 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1009 | |
1010 | struct memory_packet_config | |
1011 | { | |
a121b7c1 | 1012 | const char *name; |
11cf8741 JM |
1013 | long size; |
1014 | int fixed_p; | |
1015 | }; | |
1016 | ||
a5c0808e PA |
1017 | /* The default max memory-write-packet-size. The 16k is historical. |
1018 | (It came from older GDB's using alloca for buffers and the | |
1019 | knowledge (folklore?) that some hosts don't cope very well with | |
1020 | large alloca calls.) */ | |
1021 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1022 | ||
1023 | /* The minimum remote packet size for memory transfers. Ensures we | |
1024 | can write at least one byte. */ | |
1025 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1026 | ||
11cf8741 JM |
1027 | /* Compute the current size of a read/write packet. Since this makes |
1028 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1029 | ||
1030 | static long | |
1031 | get_memory_packet_size (struct memory_packet_config *config) | |
1032 | { | |
d01949b6 | 1033 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 1034 | remote_arch_state *rsa = get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1035 | |
11cf8741 JM |
1036 | long what_they_get; |
1037 | if (config->fixed_p) | |
1038 | { | |
1039 | if (config->size <= 0) | |
a5c0808e | 1040 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1041 | else |
1042 | what_they_get = config->size; | |
1043 | } | |
1044 | else | |
1045 | { | |
ea9c271d | 1046 | what_they_get = get_remote_packet_size (); |
23860348 | 1047 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1048 | if (config->size > 0 |
1049 | && what_they_get > config->size) | |
1050 | what_they_get = config->size; | |
be2a5f71 DJ |
1051 | |
1052 | /* Limit it to the size of the targets ``g'' response unless we have | |
1053 | permission from the stub to use a larger packet size. */ | |
1054 | if (rs->explicit_packet_size == 0 | |
1055 | && rsa->actual_register_packet_size > 0 | |
1056 | && what_they_get > rsa->actual_register_packet_size) | |
1057 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1058 | } |
a5c0808e PA |
1059 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1060 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1061 | |
1062 | /* Make sure there is room in the global buffer for this packet | |
1063 | (including its trailing NUL byte). */ | |
1064 | if (rs->buf_size < what_they_get + 1) | |
1065 | { | |
1066 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1067 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1068 | } |
1069 | ||
11cf8741 JM |
1070 | return what_they_get; |
1071 | } | |
1072 | ||
0df8b418 | 1073 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1074 | something really big then do a sanity check. */ |
11cf8741 JM |
1075 | |
1076 | static void | |
ac88e2de | 1077 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1078 | { |
1079 | int fixed_p = config->fixed_p; | |
1080 | long size = config->size; | |
a744cf53 | 1081 | |
11cf8741 | 1082 | if (args == NULL) |
8a3fe4f8 | 1083 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1084 | else if (strcmp (args, "hard") == 0 |
1085 | || strcmp (args, "fixed") == 0) | |
1086 | fixed_p = 1; | |
1087 | else if (strcmp (args, "soft") == 0 | |
1088 | || strcmp (args, "limit") == 0) | |
1089 | fixed_p = 0; | |
1090 | else | |
1091 | { | |
1092 | char *end; | |
a744cf53 | 1093 | |
11cf8741 JM |
1094 | size = strtoul (args, &end, 0); |
1095 | if (args == end) | |
8a3fe4f8 | 1096 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1097 | |
1098 | /* Instead of explicitly capping the size of a packet to or | |
1099 | disallowing it, the user is allowed to set the size to | |
1100 | something arbitrarily large. */ | |
11cf8741 | 1101 | } |
a5c0808e PA |
1102 | |
1103 | /* So that the query shows the correct value. */ | |
1104 | if (size <= 0) | |
1105 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1106 | ||
23860348 | 1107 | /* Extra checks? */ |
11cf8741 JM |
1108 | if (fixed_p && !config->fixed_p) |
1109 | { | |
e2e0b3e5 AC |
1110 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1111 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1112 | config->name, size)) |
8a3fe4f8 | 1113 | error (_("Packet size not changed.")); |
11cf8741 | 1114 | } |
23860348 | 1115 | /* Update the config. */ |
11cf8741 JM |
1116 | config->fixed_p = fixed_p; |
1117 | config->size = size; | |
1118 | } | |
1119 | ||
1120 | static void | |
1121 | show_memory_packet_size (struct memory_packet_config *config) | |
1122 | { | |
a3f17187 | 1123 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1124 | if (config->fixed_p) |
a3f17187 | 1125 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1126 | get_memory_packet_size (config)); |
1127 | else | |
a3f17187 | 1128 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1129 | get_memory_packet_size (config)); |
1130 | } | |
1131 | ||
1132 | static struct memory_packet_config memory_write_packet_config = | |
1133 | { | |
1134 | "memory-write-packet-size", | |
1135 | }; | |
1136 | ||
1137 | static void | |
ac88e2de | 1138 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1139 | { |
1140 | set_memory_packet_size (args, &memory_write_packet_config); | |
1141 | } | |
1142 | ||
1143 | static void | |
ac88e2de | 1144 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1145 | { |
1146 | show_memory_packet_size (&memory_write_packet_config); | |
1147 | } | |
1148 | ||
1149 | static long | |
1150 | get_memory_write_packet_size (void) | |
1151 | { | |
1152 | return get_memory_packet_size (&memory_write_packet_config); | |
1153 | } | |
1154 | ||
1155 | static struct memory_packet_config memory_read_packet_config = | |
1156 | { | |
1157 | "memory-read-packet-size", | |
1158 | }; | |
1159 | ||
1160 | static void | |
ac88e2de | 1161 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1162 | { |
1163 | set_memory_packet_size (args, &memory_read_packet_config); | |
1164 | } | |
1165 | ||
1166 | static void | |
ac88e2de | 1167 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1168 | { |
1169 | show_memory_packet_size (&memory_read_packet_config); | |
1170 | } | |
1171 | ||
1172 | static long | |
1173 | get_memory_read_packet_size (void) | |
1174 | { | |
1175 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1176 | |
11cf8741 JM |
1177 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1178 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1179 | increased beyond this. */ |
1180 | if (size > get_remote_packet_size ()) | |
1181 | size = get_remote_packet_size (); | |
11cf8741 JM |
1182 | return size; |
1183 | } | |
1184 | ||
11cf8741 | 1185 | \f |
5a2468f5 | 1186 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1187 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1188 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1189 | |
1190 | enum packet_support | |
1191 | { | |
1192 | PACKET_SUPPORT_UNKNOWN = 0, | |
1193 | PACKET_ENABLE, | |
1194 | PACKET_DISABLE | |
1195 | }; | |
1196 | ||
5a2468f5 JM |
1197 | struct packet_config |
1198 | { | |
bb572ddd DJ |
1199 | const char *name; |
1200 | const char *title; | |
4082afcc PA |
1201 | |
1202 | /* If auto, GDB auto-detects support for this packet or feature, | |
1203 | either through qSupported, or by trying the packet and looking | |
1204 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1205 | packet. If false, the packet is disabled. Configs that don't |
1206 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1207 | enum auto_boolean detect; |
4082afcc PA |
1208 | |
1209 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1210 | enum packet_support support; |
1211 | }; | |
1212 | ||
d471ea57 | 1213 | /* Analyze a packet's return value and update the packet config |
23860348 | 1214 | accordingly. */ |
d471ea57 AC |
1215 | |
1216 | enum packet_result | |
1217 | { | |
1218 | PACKET_ERROR, | |
1219 | PACKET_OK, | |
1220 | PACKET_UNKNOWN | |
1221 | }; | |
1222 | ||
4082afcc PA |
1223 | static enum packet_support packet_config_support (struct packet_config *config); |
1224 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1225 | |
1226 | static void | |
fba45db2 | 1227 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1228 | { |
a121b7c1 | 1229 | const char *support = "internal-error"; |
a744cf53 | 1230 | |
4082afcc | 1231 | switch (packet_config_support (config)) |
5a2468f5 JM |
1232 | { |
1233 | case PACKET_ENABLE: | |
1234 | support = "enabled"; | |
1235 | break; | |
1236 | case PACKET_DISABLE: | |
1237 | support = "disabled"; | |
1238 | break; | |
1239 | case PACKET_SUPPORT_UNKNOWN: | |
1240 | support = "unknown"; | |
1241 | break; | |
1242 | } | |
1243 | switch (config->detect) | |
1244 | { | |
7f19b9a2 | 1245 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1246 | printf_filtered (_("Support for the `%s' packet " |
1247 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1248 | config->name, support); |
5a2468f5 | 1249 | break; |
7f19b9a2 AC |
1250 | case AUTO_BOOLEAN_TRUE: |
1251 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1252 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1253 | config->name, support); | |
8e248173 | 1254 | break; |
5a2468f5 JM |
1255 | } |
1256 | } | |
1257 | ||
1258 | static void | |
bb572ddd DJ |
1259 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1260 | const char *title, int legacy) | |
d471ea57 | 1261 | { |
5a2468f5 JM |
1262 | char *set_doc; |
1263 | char *show_doc; | |
d471ea57 | 1264 | char *cmd_name; |
3ed07be4 | 1265 | |
5a2468f5 JM |
1266 | config->name = name; |
1267 | config->title = title; | |
b435e160 AC |
1268 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1269 | name, title); | |
3e43a32a MS |
1270 | show_doc = xstrprintf ("Show current use of remote " |
1271 | "protocol `%s' (%s) packet", | |
b435e160 | 1272 | name, title); |
d471ea57 | 1273 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1274 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1275 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1276 | &config->detect, set_doc, |
1277 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1278 | NULL, |
bb572ddd DJ |
1279 | show_remote_protocol_packet_cmd, |
1280 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1281 | /* The command code copies the documentation strings. */ |
1282 | xfree (set_doc); | |
1283 | xfree (show_doc); | |
23860348 | 1284 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1285 | if (legacy) |
1286 | { | |
1287 | char *legacy_name; | |
a744cf53 | 1288 | |
b435e160 | 1289 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1290 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1291 | &remote_set_cmdlist); |
d471ea57 | 1292 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1293 | &remote_show_cmdlist); |
d471ea57 | 1294 | } |
5a2468f5 JM |
1295 | } |
1296 | ||
d471ea57 | 1297 | static enum packet_result |
a76d924d | 1298 | packet_check_result (const char *buf) |
5a2468f5 | 1299 | { |
d471ea57 | 1300 | if (buf[0] != '\0') |
5a2468f5 | 1301 | { |
d471ea57 | 1302 | /* The stub recognized the packet request. Check that the |
23860348 | 1303 | operation succeeded. */ |
a76d924d DJ |
1304 | if (buf[0] == 'E' |
1305 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1306 | && buf[3] == '\0') | |
1307 | /* "Enn" - definitly an error. */ | |
1308 | return PACKET_ERROR; | |
1309 | ||
1310 | /* Always treat "E." as an error. This will be used for | |
1311 | more verbose error messages, such as E.memtypes. */ | |
1312 | if (buf[0] == 'E' && buf[1] == '.') | |
1313 | return PACKET_ERROR; | |
1314 | ||
1315 | /* The packet may or may not be OK. Just assume it is. */ | |
1316 | return PACKET_OK; | |
1317 | } | |
1318 | else | |
1319 | /* The stub does not support the packet. */ | |
1320 | return PACKET_UNKNOWN; | |
1321 | } | |
1322 | ||
1323 | static enum packet_result | |
1324 | packet_ok (const char *buf, struct packet_config *config) | |
1325 | { | |
1326 | enum packet_result result; | |
1327 | ||
4082afcc PA |
1328 | if (config->detect != AUTO_BOOLEAN_TRUE |
1329 | && config->support == PACKET_DISABLE) | |
1330 | internal_error (__FILE__, __LINE__, | |
1331 | _("packet_ok: attempt to use a disabled packet")); | |
1332 | ||
a76d924d DJ |
1333 | result = packet_check_result (buf); |
1334 | switch (result) | |
1335 | { | |
1336 | case PACKET_OK: | |
1337 | case PACKET_ERROR: | |
1338 | /* The stub recognized the packet request. */ | |
4082afcc | 1339 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1340 | { |
d471ea57 AC |
1341 | if (remote_debug) |
1342 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1343 | "Packet %s (%s) is supported\n", |
1344 | config->name, config->title); | |
d471ea57 | 1345 | config->support = PACKET_ENABLE; |
d471ea57 | 1346 | } |
a76d924d DJ |
1347 | break; |
1348 | case PACKET_UNKNOWN: | |
23860348 | 1349 | /* The stub does not support the packet. */ |
4082afcc PA |
1350 | if (config->detect == AUTO_BOOLEAN_AUTO |
1351 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1352 | { |
4082afcc PA |
1353 | /* If the stub previously indicated that the packet was |
1354 | supported then there is a protocol error. */ | |
1355 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1356 | config->name, config->title); | |
1357 | } | |
1358 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1359 | { | |
1360 | /* The user set it wrong. */ | |
1361 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1362 | config->name, config->title); | |
d471ea57 | 1363 | } |
4082afcc PA |
1364 | |
1365 | if (remote_debug) | |
1366 | fprintf_unfiltered (gdb_stdlog, | |
1367 | "Packet %s (%s) is NOT supported\n", | |
1368 | config->name, config->title); | |
1369 | config->support = PACKET_DISABLE; | |
a76d924d | 1370 | break; |
5a2468f5 | 1371 | } |
a76d924d DJ |
1372 | |
1373 | return result; | |
5a2468f5 JM |
1374 | } |
1375 | ||
444abaca DJ |
1376 | enum { |
1377 | PACKET_vCont = 0, | |
1378 | PACKET_X, | |
1379 | PACKET_qSymbol, | |
1380 | PACKET_P, | |
1381 | PACKET_p, | |
1382 | PACKET_Z0, | |
1383 | PACKET_Z1, | |
1384 | PACKET_Z2, | |
1385 | PACKET_Z3, | |
1386 | PACKET_Z4, | |
15a201c8 | 1387 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1388 | PACKET_vFile_open, |
1389 | PACKET_vFile_pread, | |
1390 | PACKET_vFile_pwrite, | |
1391 | PACKET_vFile_close, | |
1392 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1393 | PACKET_vFile_readlink, |
0a93529c | 1394 | PACKET_vFile_fstat, |
0876f84a | 1395 | PACKET_qXfer_auxv, |
23181151 | 1396 | PACKET_qXfer_features, |
c78fa86a | 1397 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1398 | PACKET_qXfer_libraries, |
2268b414 | 1399 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1400 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1401 | PACKET_qXfer_spu_read, |
1402 | PACKET_qXfer_spu_write, | |
07e059b5 | 1403 | PACKET_qXfer_osdata, |
dc146f7c | 1404 | PACKET_qXfer_threads, |
0fb4aa4b | 1405 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1406 | PACKET_qXfer_traceframe_info, |
169081d0 | 1407 | PACKET_qXfer_uib, |
711e434b | 1408 | PACKET_qGetTIBAddr, |
444abaca | 1409 | PACKET_qGetTLSAddr, |
be2a5f71 | 1410 | PACKET_qSupported, |
bd3eecc3 | 1411 | PACKET_qTStatus, |
89be2091 | 1412 | PACKET_QPassSignals, |
82075af2 | 1413 | PACKET_QCatchSyscalls, |
9b224c5e | 1414 | PACKET_QProgramSignals, |
bc3b087d | 1415 | PACKET_QSetWorkingDir, |
aefd8b33 | 1416 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1417 | PACKET_QEnvironmentHexEncoded, |
1418 | PACKET_QEnvironmentReset, | |
1419 | PACKET_QEnvironmentUnset, | |
936d2992 | 1420 | PACKET_qCRC, |
08388c79 | 1421 | PACKET_qSearch_memory, |
2d717e4f DJ |
1422 | PACKET_vAttach, |
1423 | PACKET_vRun, | |
a6f3e723 | 1424 | PACKET_QStartNoAckMode, |
82f73884 | 1425 | PACKET_vKill, |
4aa995e1 PA |
1426 | PACKET_qXfer_siginfo_read, |
1427 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1428 | PACKET_qAttached, |
4082afcc PA |
1429 | |
1430 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1431 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1432 | |
1433 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1434 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1435 | |
1436 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1437 | PACKET_BreakpointCommands, |
4082afcc PA |
1438 | |
1439 | /* Support for fast tracepoints. */ | |
7a697b8d | 1440 | PACKET_FastTracepoints, |
4082afcc PA |
1441 | |
1442 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1443 | PACKET_StaticTracepoints, |
4082afcc PA |
1444 | |
1445 | /* Support for installing tracepoints while a trace experiment is | |
1446 | running. */ | |
1e4d1764 | 1447 | PACKET_InstallInTrace, |
4082afcc | 1448 | |
40ab02ce MS |
1449 | PACKET_bc, |
1450 | PACKET_bs, | |
409873ef | 1451 | PACKET_TracepointSource, |
d914c394 | 1452 | PACKET_QAllow, |
78d85199 | 1453 | PACKET_qXfer_fdpic, |
03583c20 | 1454 | PACKET_QDisableRandomization, |
d1feda86 | 1455 | PACKET_QAgent, |
f6f899bf | 1456 | PACKET_QTBuffer_size, |
9accd112 MM |
1457 | PACKET_Qbtrace_off, |
1458 | PACKET_Qbtrace_bts, | |
b20a6524 | 1459 | PACKET_Qbtrace_pt, |
9accd112 | 1460 | PACKET_qXfer_btrace, |
4082afcc PA |
1461 | |
1462 | /* Support for the QNonStop packet. */ | |
1463 | PACKET_QNonStop, | |
1464 | ||
65706a29 PA |
1465 | /* Support for the QThreadEvents packet. */ |
1466 | PACKET_QThreadEvents, | |
1467 | ||
4082afcc PA |
1468 | /* Support for multi-process extensions. */ |
1469 | PACKET_multiprocess_feature, | |
1470 | ||
1471 | /* Support for enabling and disabling tracepoints while a trace | |
1472 | experiment is running. */ | |
1473 | PACKET_EnableDisableTracepoints_feature, | |
1474 | ||
1475 | /* Support for collecting strings using the tracenz bytecode. */ | |
1476 | PACKET_tracenz_feature, | |
1477 | ||
1478 | /* Support for continuing to run a trace experiment while GDB is | |
1479 | disconnected. */ | |
1480 | PACKET_DisconnectedTracing_feature, | |
1481 | ||
1482 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1483 | PACKET_augmented_libraries_svr4_read_feature, | |
1484 | ||
f4abbc16 MM |
1485 | /* Support for the qXfer:btrace-conf:read packet. */ |
1486 | PACKET_qXfer_btrace_conf, | |
1487 | ||
d33501a5 MM |
1488 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1489 | PACKET_Qbtrace_conf_bts_size, | |
1490 | ||
f7e6eed5 PA |
1491 | /* Support for swbreak+ feature. */ |
1492 | PACKET_swbreak_feature, | |
1493 | ||
1494 | /* Support for hwbreak+ feature. */ | |
1495 | PACKET_hwbreak_feature, | |
1496 | ||
89245bc0 DB |
1497 | /* Support for fork events. */ |
1498 | PACKET_fork_event_feature, | |
1499 | ||
1500 | /* Support for vfork events. */ | |
1501 | PACKET_vfork_event_feature, | |
1502 | ||
b20a6524 MM |
1503 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1504 | PACKET_Qbtrace_conf_pt_size, | |
1505 | ||
94585166 DB |
1506 | /* Support for exec events. */ |
1507 | PACKET_exec_event_feature, | |
1508 | ||
750ce8d1 YQ |
1509 | /* Support for query supported vCont actions. */ |
1510 | PACKET_vContSupported, | |
1511 | ||
de979965 PA |
1512 | /* Support remote CTRL-C. */ |
1513 | PACKET_vCtrlC, | |
1514 | ||
f2faf941 PA |
1515 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1516 | PACKET_no_resumed, | |
1517 | ||
444abaca DJ |
1518 | PACKET_MAX |
1519 | }; | |
506fb367 | 1520 | |
444abaca | 1521 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1522 | |
f7e6eed5 PA |
1523 | /* Returns the packet's corresponding "set remote foo-packet" command |
1524 | state. See struct packet_config for more details. */ | |
1525 | ||
1526 | static enum auto_boolean | |
1527 | packet_set_cmd_state (int packet) | |
1528 | { | |
1529 | return remote_protocol_packets[packet].detect; | |
1530 | } | |
1531 | ||
4082afcc PA |
1532 | /* Returns whether a given packet or feature is supported. This takes |
1533 | into account the state of the corresponding "set remote foo-packet" | |
1534 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1535 | |
4082afcc PA |
1536 | static enum packet_support |
1537 | packet_config_support (struct packet_config *config) | |
1538 | { | |
1539 | switch (config->detect) | |
444abaca | 1540 | { |
4082afcc PA |
1541 | case AUTO_BOOLEAN_TRUE: |
1542 | return PACKET_ENABLE; | |
1543 | case AUTO_BOOLEAN_FALSE: | |
1544 | return PACKET_DISABLE; | |
1545 | case AUTO_BOOLEAN_AUTO: | |
1546 | return config->support; | |
1547 | default: | |
1548 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1549 | } |
4082afcc PA |
1550 | } |
1551 | ||
1552 | /* Same as packet_config_support, but takes the packet's enum value as | |
1553 | argument. */ | |
1554 | ||
1555 | static enum packet_support | |
1556 | packet_support (int packet) | |
1557 | { | |
1558 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1559 | ||
1560 | return packet_config_support (config); | |
dc8acb97 MS |
1561 | } |
1562 | ||
5a2468f5 | 1563 | static void |
444abaca DJ |
1564 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1565 | struct cmd_list_element *c, | |
1566 | const char *value) | |
5a2468f5 | 1567 | { |
444abaca | 1568 | struct packet_config *packet; |
5a2468f5 | 1569 | |
444abaca DJ |
1570 | for (packet = remote_protocol_packets; |
1571 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1572 | packet++) | |
1573 | { | |
1574 | if (&packet->detect == c->var) | |
1575 | { | |
1576 | show_packet_config_cmd (packet); | |
1577 | return; | |
1578 | } | |
1579 | } | |
9b20d036 | 1580 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1581 | c->name); |
5a2468f5 JM |
1582 | } |
1583 | ||
d471ea57 AC |
1584 | /* Should we try one of the 'Z' requests? */ |
1585 | ||
1586 | enum Z_packet_type | |
1587 | { | |
1588 | Z_PACKET_SOFTWARE_BP, | |
1589 | Z_PACKET_HARDWARE_BP, | |
1590 | Z_PACKET_WRITE_WP, | |
1591 | Z_PACKET_READ_WP, | |
1592 | Z_PACKET_ACCESS_WP, | |
1593 | NR_Z_PACKET_TYPES | |
1594 | }; | |
96baa820 | 1595 | |
d471ea57 | 1596 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1597 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1598 | |
7f19b9a2 | 1599 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1600 | |
1601 | static void | |
eb4c3f4a | 1602 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 1603 | struct cmd_list_element *c) |
96baa820 | 1604 | { |
d471ea57 | 1605 | int i; |
a744cf53 | 1606 | |
d471ea57 | 1607 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1608 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1609 | } |
1610 | ||
1611 | static void | |
08546159 AC |
1612 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1613 | struct cmd_list_element *c, | |
1614 | const char *value) | |
96baa820 | 1615 | { |
d471ea57 | 1616 | int i; |
a744cf53 | 1617 | |
d471ea57 AC |
1618 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1619 | { | |
444abaca | 1620 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1621 | } |
96baa820 JM |
1622 | } |
1623 | ||
4082afcc PA |
1624 | /* Returns true if the multi-process extensions are in effect. */ |
1625 | ||
1626 | static int | |
1627 | remote_multi_process_p (struct remote_state *rs) | |
1628 | { | |
1629 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1630 | } | |
1631 | ||
de0d863e DB |
1632 | /* Returns true if fork events are supported. */ |
1633 | ||
1634 | static int | |
1635 | remote_fork_event_p (struct remote_state *rs) | |
1636 | { | |
1637 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1638 | } | |
1639 | ||
c269dbdb DB |
1640 | /* Returns true if vfork events are supported. */ |
1641 | ||
1642 | static int | |
1643 | remote_vfork_event_p (struct remote_state *rs) | |
1644 | { | |
1645 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1646 | } | |
1647 | ||
d46addbb DB |
1648 | /* Returns true if exec events are supported. */ |
1649 | ||
1650 | static int | |
1651 | remote_exec_event_p (struct remote_state *rs) | |
1652 | { | |
1653 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1654 | } | |
1655 | ||
cbb8991c DB |
1656 | /* Insert fork catchpoint target routine. If fork events are enabled |
1657 | then return success, nothing more to do. */ | |
1658 | ||
1659 | static int | |
1660 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1661 | { | |
1662 | struct remote_state *rs = get_remote_state (); | |
1663 | ||
1664 | return !remote_fork_event_p (rs); | |
1665 | } | |
1666 | ||
1667 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1668 | return success. */ | |
1669 | ||
1670 | static int | |
1671 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1672 | { | |
1673 | return 0; | |
1674 | } | |
1675 | ||
1676 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1677 | then return success, nothing more to do. */ | |
1678 | ||
1679 | static int | |
1680 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1681 | { | |
1682 | struct remote_state *rs = get_remote_state (); | |
1683 | ||
1684 | return !remote_vfork_event_p (rs); | |
1685 | } | |
1686 | ||
1687 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1688 | return success. */ | |
1689 | ||
1690 | static int | |
1691 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1692 | { | |
1693 | return 0; | |
1694 | } | |
1695 | ||
d46addbb DB |
1696 | /* Insert exec catchpoint target routine. If exec events are |
1697 | enabled, just return success. */ | |
1698 | ||
1699 | static int | |
1700 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1701 | { | |
1702 | struct remote_state *rs = get_remote_state (); | |
1703 | ||
1704 | return !remote_exec_event_p (rs); | |
1705 | } | |
1706 | ||
1707 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1708 | return success. */ | |
1709 | ||
1710 | static int | |
1711 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1712 | { | |
1713 | return 0; | |
1714 | } | |
1715 | ||
74531fed PA |
1716 | \f |
1717 | /* Asynchronous signal handle registered as event loop source for | |
1718 | when we have pending events ready to be passed to the core. */ | |
1719 | ||
1720 | static struct async_event_handler *remote_async_inferior_event_token; | |
1721 | ||
c906108c SS |
1722 | \f |
1723 | ||
79d7f229 PA |
1724 | static ptid_t magic_null_ptid; |
1725 | static ptid_t not_sent_ptid; | |
1726 | static ptid_t any_thread_ptid; | |
1727 | ||
0b16c5cf PA |
1728 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1729 | detach instead of killing it when bailing out). */ | |
1730 | ||
1731 | static int | |
1732 | remote_query_attached (int pid) | |
1733 | { | |
1734 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1735 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1736 | |
4082afcc | 1737 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1738 | return 0; |
1739 | ||
1740 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1741 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1742 | else |
bba74b36 | 1743 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1744 | |
1745 | putpkt (rs->buf); | |
1746 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1747 | ||
1748 | switch (packet_ok (rs->buf, | |
1554e9be | 1749 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1750 | { |
1751 | case PACKET_OK: | |
1752 | if (strcmp (rs->buf, "1") == 0) | |
1753 | return 1; | |
1754 | break; | |
1755 | case PACKET_ERROR: | |
1756 | warning (_("Remote failure reply: %s"), rs->buf); | |
1757 | break; | |
1758 | case PACKET_UNKNOWN: | |
1759 | break; | |
1760 | } | |
1761 | ||
1762 | return 0; | |
1763 | } | |
1764 | ||
49c62f2e PA |
1765 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1766 | has been invented by GDB, instead of reported by the target. Since | |
1767 | we can be connected to a remote system before before knowing about | |
1768 | any inferior, mark the target with execution when we find the first | |
1769 | inferior. If ATTACHED is 1, then we had just attached to this | |
1770 | inferior. If it is 0, then we just created this inferior. If it | |
1771 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1772 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1773 | attempt to open this inferior's executable as the main executable | |
1774 | if no main executable is open already. */ | |
1941c569 PA |
1775 | |
1776 | static struct inferior * | |
1b6e6f5c GB |
1777 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1778 | int try_open_exec) | |
1941c569 | 1779 | { |
1941c569 PA |
1780 | struct inferior *inf; |
1781 | ||
0b16c5cf PA |
1782 | /* Check whether this process we're learning about is to be |
1783 | considered attached, or if is to be considered to have been | |
1784 | spawned by the stub. */ | |
1785 | if (attached == -1) | |
1786 | attached = remote_query_attached (pid); | |
1787 | ||
f5656ead | 1788 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1789 | { |
1790 | /* If the target shares code across all inferiors, then every | |
1791 | attach adds a new inferior. */ | |
1792 | inf = add_inferior (pid); | |
1793 | ||
1794 | /* ... and every inferior is bound to the same program space. | |
1795 | However, each inferior may still have its own address | |
1796 | space. */ | |
1797 | inf->aspace = maybe_new_address_space (); | |
1798 | inf->pspace = current_program_space; | |
1799 | } | |
1800 | else | |
1801 | { | |
1802 | /* In the traditional debugging scenario, there's a 1-1 match | |
1803 | between program/address spaces. We simply bind the inferior | |
1804 | to the program space's address space. */ | |
1805 | inf = current_inferior (); | |
1806 | inferior_appeared (inf, pid); | |
1807 | } | |
1941c569 | 1808 | |
0b16c5cf | 1809 | inf->attach_flag = attached; |
49c62f2e | 1810 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1811 | |
1b6e6f5c GB |
1812 | /* If no main executable is currently open then attempt to |
1813 | open the file that was executed to create this inferior. */ | |
835205d0 | 1814 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 1815 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 1816 | |
1941c569 PA |
1817 | return inf; |
1818 | } | |
1819 | ||
7aabaf9d | 1820 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
85ad3aaf | 1821 | |
1941c569 PA |
1822 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
1823 | according to RUNNING. */ | |
1824 | ||
c906108c | 1825 | static void |
0d5b594f | 1826 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 1827 | { |
b7ea362b | 1828 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 1829 | struct thread_info *thread; |
b7ea362b PA |
1830 | |
1831 | /* GDB historically didn't pull threads in the initial connection | |
1832 | setup. If the remote target doesn't even have a concept of | |
1833 | threads (e.g., a bare-metal target), even if internally we | |
1834 | consider that a single-threaded target, mentioning a new thread | |
1835 | might be confusing to the user. Be silent then, preserving the | |
1836 | age old behavior. */ | |
1837 | if (rs->starting_up) | |
85ad3aaf | 1838 | thread = add_thread_silent (ptid); |
b7ea362b | 1839 | else |
85ad3aaf | 1840 | thread = add_thread (ptid); |
1941c569 | 1841 | |
7aabaf9d | 1842 | get_remote_thread_info (thread)->vcont_resumed = executing; |
0d5b594f | 1843 | set_executing (ptid, executing); |
1941c569 PA |
1844 | set_running (ptid, running); |
1845 | } | |
1846 | ||
1847 | /* Come here when we learn about a thread id from the remote target. | |
1848 | It may be the first time we hear about such thread, so take the | |
1849 | opportunity to add it to GDB's thread list. In case this is the | |
1850 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
1851 | GDB's inferior list as well. EXECUTING indicates whether the |
1852 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
1853 | |
1854 | static void | |
0d5b594f | 1855 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 1856 | { |
0d5b594f PA |
1857 | /* In non-stop mode, we assume new found threads are (externally) |
1858 | running until proven otherwise with a stop reply. In all-stop, | |
1859 | we can only get here if all threads are stopped. */ | |
1860 | int running = target_is_non_stop_p () ? 1 : 0; | |
1861 | ||
c906108c SS |
1862 | /* If this is a new thread, add it to GDB's thread list. |
1863 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1864 | |
1865 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1866 | { | |
1867 | /* We're seeing an event on a thread id we knew had exited. | |
1868 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 1869 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
1870 | return; |
1871 | } | |
1872 | ||
79d7f229 | 1873 | if (!in_thread_list (currthread)) |
c0a2216e | 1874 | { |
1941c569 | 1875 | struct inferior *inf = NULL; |
bad34192 | 1876 | int pid = ptid_get_pid (currthread); |
1941c569 | 1877 | |
bad34192 PA |
1878 | if (ptid_is_pid (inferior_ptid) |
1879 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1880 | { |
1881 | /* inferior_ptid has no thread member yet. This can happen | |
1882 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1883 | stub doesn't support qC. This is the first stop reported | |
1884 | after an attach, so this is the main thread. Update the | |
1885 | ptid in the thread list. */ | |
bad34192 PA |
1886 | if (in_thread_list (pid_to_ptid (pid))) |
1887 | thread_change_ptid (inferior_ptid, currthread); | |
1888 | else | |
1889 | { | |
0d5b594f | 1890 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
1891 | inferior_ptid = currthread; |
1892 | } | |
dc146f7c | 1893 | return; |
c0a2216e | 1894 | } |
82f73884 PA |
1895 | |
1896 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1897 | { |
1898 | /* inferior_ptid is not set yet. This can happen with the | |
1899 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1900 | doesn't support qC. This is the first stop reported | |
1901 | after an attach, so this is the main thread. Update the | |
1902 | ptid in the thread list. */ | |
dc146f7c | 1903 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1904 | return; |
c0a2216e | 1905 | } |
82f73884 | 1906 | |
29c87f7f PA |
1907 | /* When connecting to a target remote, or to a target |
1908 | extended-remote which already was debugging an inferior, we | |
1909 | may not know about it yet. Add it before adding its child | |
1910 | thread, so notifications are emitted in a sensible order. */ | |
1911 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1912 | { |
1913 | struct remote_state *rs = get_remote_state (); | |
1914 | int fake_pid_p = !remote_multi_process_p (rs); | |
1915 | ||
1916 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1917 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1918 | } |
29c87f7f | 1919 | |
82f73884 | 1920 | /* This is really a new thread. Add it. */ |
0d5b594f | 1921 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
1922 | |
1923 | /* If we found a new inferior, let the common code do whatever | |
1924 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1925 | breakpoints), unless we're just setting up an all-stop |
1926 | connection. */ | |
1941c569 | 1927 | if (inf != NULL) |
b7ea362b PA |
1928 | { |
1929 | struct remote_state *rs = get_remote_state (); | |
1930 | ||
6efcd9a8 | 1931 | if (!rs->starting_up) |
0d5b594f | 1932 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 1933 | } |
c0a2216e | 1934 | } |
c906108c SS |
1935 | } |
1936 | ||
85ad3aaf | 1937 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 1938 | |
7aabaf9d SM |
1939 | static remote_thread_info * |
1940 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 1941 | { |
85ad3aaf | 1942 | gdb_assert (thread != NULL); |
dc146f7c | 1943 | |
85ad3aaf | 1944 | if (thread->priv == NULL) |
7aabaf9d | 1945 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 1946 | |
7aabaf9d | 1947 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
1948 | } |
1949 | ||
1950 | /* Return PTID's private thread data, creating it if necessary. */ | |
1951 | ||
7aabaf9d SM |
1952 | static remote_thread_info * |
1953 | get_remote_thread_info (ptid_t ptid) | |
85ad3aaf PA |
1954 | { |
1955 | struct thread_info *info = find_thread_ptid (ptid); | |
1956 | ||
7aabaf9d | 1957 | return get_remote_thread_info (info); |
dc146f7c VP |
1958 | } |
1959 | ||
74531fed PA |
1960 | /* Call this function as a result of |
1961 | 1) A halt indication (T packet) containing a thread id | |
1962 | 2) A direct query of currthread | |
0df8b418 | 1963 | 3) Successful execution of set thread */ |
74531fed PA |
1964 | |
1965 | static void | |
47f8a51d | 1966 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1967 | { |
47f8a51d | 1968 | rs->general_thread = currthread; |
74531fed PA |
1969 | } |
1970 | ||
89be2091 DJ |
1971 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1972 | it can simply pass through to the inferior without reporting. */ | |
1973 | ||
1974 | static void | |
94bedb42 TT |
1975 | remote_pass_signals (struct target_ops *self, |
1976 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1977 | { |
4082afcc | 1978 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1979 | { |
1980 | char *pass_packet, *p; | |
89be2091 | 1981 | int count = 0, i; |
747dc59d | 1982 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1983 | |
1984 | gdb_assert (numsigs < 256); | |
1985 | for (i = 0; i < numsigs; i++) | |
1986 | { | |
2455069d | 1987 | if (pass_signals[i]) |
89be2091 DJ |
1988 | count++; |
1989 | } | |
224c3ddb | 1990 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
1991 | strcpy (pass_packet, "QPassSignals:"); |
1992 | p = pass_packet + strlen (pass_packet); | |
1993 | for (i = 0; i < numsigs; i++) | |
1994 | { | |
2455069d | 1995 | if (pass_signals[i]) |
89be2091 DJ |
1996 | { |
1997 | if (i >= 16) | |
1998 | *p++ = tohex (i >> 4); | |
1999 | *p++ = tohex (i & 15); | |
2000 | if (count) | |
2001 | *p++ = ';'; | |
2002 | else | |
2003 | break; | |
2004 | count--; | |
2005 | } | |
2006 | } | |
2007 | *p = 0; | |
747dc59d | 2008 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2009 | { |
89be2091 DJ |
2010 | putpkt (pass_packet); |
2011 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2012 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2013 | if (rs->last_pass_packet) |
2014 | xfree (rs->last_pass_packet); | |
2015 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2016 | } |
2017 | else | |
2018 | xfree (pass_packet); | |
2019 | } | |
2020 | } | |
2021 | ||
82075af2 JS |
2022 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2023 | to report syscalls to GDB. */ | |
2024 | ||
2025 | static int | |
2026 | remote_set_syscall_catchpoint (struct target_ops *self, | |
649a140c PA |
2027 | int pid, bool needed, int any_count, |
2028 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2029 | { |
b80406ac | 2030 | const char *catch_packet; |
82075af2 JS |
2031 | enum packet_result result; |
2032 | int n_sysno = 0; | |
2033 | ||
2034 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2035 | { | |
2036 | /* Not supported. */ | |
2037 | return 1; | |
2038 | } | |
2039 | ||
649a140c | 2040 | if (needed && any_count == 0) |
82075af2 | 2041 | { |
649a140c PA |
2042 | /* Count how many syscalls are to be caught. */ |
2043 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2044 | { |
649a140c | 2045 | if (syscall_counts[i] != 0) |
82075af2 JS |
2046 | n_sysno++; |
2047 | } | |
2048 | } | |
2049 | ||
2050 | if (remote_debug) | |
2051 | { | |
2052 | fprintf_unfiltered (gdb_stdlog, | |
2053 | "remote_set_syscall_catchpoint " | |
2054 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2055 | pid, needed, any_count, n_sysno); | |
2056 | } | |
2057 | ||
1b81856f | 2058 | std::string built_packet; |
82075af2 JS |
2059 | if (needed) |
2060 | { | |
2061 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2062 | characters for a sysno. If the resulting packet size is too | |
2063 | big, fallback on the non-selective packet. */ | |
2064 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2065 | built_packet.reserve (maxpktsz); |
2066 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2067 | if (any_count == 0) |
82075af2 | 2068 | { |
649a140c PA |
2069 | /* Add in each syscall to be caught. */ |
2070 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2071 | { |
649a140c PA |
2072 | if (syscall_counts[i] != 0) |
2073 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2074 | } |
2075 | } | |
1b81856f | 2076 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2077 | { |
2078 | /* catch_packet too big. Fallback to less efficient | |
2079 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2080 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2081 | } |
b80406ac | 2082 | else |
1b81856f | 2083 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2084 | } |
2085 | else | |
b80406ac | 2086 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2087 | |
b80406ac | 2088 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2089 | |
b80406ac TT |
2090 | putpkt (catch_packet); |
2091 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2092 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2093 | if (result == PACKET_OK) | |
2094 | return 0; | |
2095 | else | |
2096 | return -1; | |
82075af2 JS |
2097 | } |
2098 | ||
9b224c5e PA |
2099 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2100 | signals it should pass through to the inferior when detaching. */ | |
2101 | ||
2102 | static void | |
daf5e9b6 TT |
2103 | remote_program_signals (struct target_ops *self, |
2104 | int numsigs, unsigned char *signals) | |
9b224c5e | 2105 | { |
4082afcc | 2106 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2107 | { |
2108 | char *packet, *p; | |
2109 | int count = 0, i; | |
5e4a05c4 | 2110 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2111 | |
2112 | gdb_assert (numsigs < 256); | |
2113 | for (i = 0; i < numsigs; i++) | |
2114 | { | |
2115 | if (signals[i]) | |
2116 | count++; | |
2117 | } | |
224c3ddb | 2118 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2119 | strcpy (packet, "QProgramSignals:"); |
2120 | p = packet + strlen (packet); | |
2121 | for (i = 0; i < numsigs; i++) | |
2122 | { | |
2123 | if (signal_pass_state (i)) | |
2124 | { | |
2125 | if (i >= 16) | |
2126 | *p++ = tohex (i >> 4); | |
2127 | *p++ = tohex (i & 15); | |
2128 | if (count) | |
2129 | *p++ = ';'; | |
2130 | else | |
2131 | break; | |
2132 | count--; | |
2133 | } | |
2134 | } | |
2135 | *p = 0; | |
5e4a05c4 TT |
2136 | if (!rs->last_program_signals_packet |
2137 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2138 | { |
9b224c5e PA |
2139 | putpkt (packet); |
2140 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2141 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2142 | xfree (rs->last_program_signals_packet); |
2143 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2144 | } |
2145 | else | |
2146 | xfree (packet); | |
2147 | } | |
2148 | } | |
2149 | ||
79d7f229 PA |
2150 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2151 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2152 | thread. If GEN is set, set the general thread, if not, then set | |
2153 | the step/continue thread. */ | |
c906108c | 2154 | static void |
d62a8ae2 | 2155 | set_thread (ptid_t ptid, int gen) |
c906108c | 2156 | { |
d01949b6 | 2157 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2158 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2159 | char *buf = rs->buf; |
79d7f229 | 2160 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2161 | |
79d7f229 | 2162 | if (ptid_equal (state, ptid)) |
c906108c SS |
2163 | return; |
2164 | ||
79d7f229 PA |
2165 | *buf++ = 'H'; |
2166 | *buf++ = gen ? 'g' : 'c'; | |
2167 | if (ptid_equal (ptid, magic_null_ptid)) | |
2168 | xsnprintf (buf, endbuf - buf, "0"); | |
2169 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2170 | xsnprintf (buf, endbuf - buf, "0"); | |
2171 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2172 | xsnprintf (buf, endbuf - buf, "-1"); | |
2173 | else | |
82f73884 | 2174 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2175 | putpkt (rs->buf); |
6d820c5c | 2176 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2177 | if (gen) |
47f8a51d | 2178 | rs->general_thread = ptid; |
c906108c | 2179 | else |
47f8a51d | 2180 | rs->continue_thread = ptid; |
c906108c | 2181 | } |
79d7f229 PA |
2182 | |
2183 | static void | |
d62a8ae2 | 2184 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2185 | { |
2186 | set_thread (ptid, 1); | |
2187 | } | |
2188 | ||
2189 | static void | |
d62a8ae2 | 2190 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2191 | { |
2192 | set_thread (ptid, 0); | |
2193 | } | |
2194 | ||
3c9c4b83 PA |
2195 | /* Change the remote current process. Which thread within the process |
2196 | ends up selected isn't important, as long as it is the same process | |
2197 | as what INFERIOR_PTID points to. | |
2198 | ||
2199 | This comes from that fact that there is no explicit notion of | |
2200 | "selected process" in the protocol. The selected process for | |
2201 | general operations is the process the selected general thread | |
2202 | belongs to. */ | |
2203 | ||
2204 | static void | |
2205 | set_general_process (void) | |
2206 | { | |
2207 | struct remote_state *rs = get_remote_state (); | |
2208 | ||
2209 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2210 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2211 | return; |
2212 | ||
2213 | /* We only need to change the remote current thread if it's pointing | |
2214 | at some other process. */ | |
47f8a51d | 2215 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2216 | set_general_thread (inferior_ptid); |
2217 | } | |
2218 | ||
c906108c | 2219 | \f |
7d1a114c PA |
2220 | /* Return nonzero if this is the main thread that we made up ourselves |
2221 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2222 | |
2223 | static int | |
7d1a114c | 2224 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2225 | { |
c0a2216e PA |
2226 | if (ptid_equal (ptid, magic_null_ptid)) |
2227 | /* The main thread is always alive. */ | |
2228 | return 1; | |
2229 | ||
ba348170 | 2230 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2231 | /* The main thread is always alive. This can happen after a |
2232 | vAttach, if the remote side doesn't support | |
2233 | multi-threading. */ | |
2234 | return 1; | |
2235 | ||
7d1a114c PA |
2236 | return 0; |
2237 | } | |
2238 | ||
2239 | /* Return nonzero if the thread PTID is still alive on the remote | |
2240 | system. */ | |
2241 | ||
2242 | static int | |
2243 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2244 | { | |
2245 | struct remote_state *rs = get_remote_state (); | |
2246 | char *p, *endp; | |
2247 | ||
2248 | /* Check if this is a thread that we made up ourselves to model | |
2249 | non-threaded targets as single-threaded. */ | |
2250 | if (remote_thread_always_alive (ops, ptid)) | |
2251 | return 1; | |
2252 | ||
82f73884 PA |
2253 | p = rs->buf; |
2254 | endp = rs->buf + get_remote_packet_size (); | |
2255 | ||
2256 | *p++ = 'T'; | |
2257 | write_ptid (p, endp, ptid); | |
2258 | ||
2e9f7625 | 2259 | putpkt (rs->buf); |
6d820c5c | 2260 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2261 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2262 | } |
2263 | ||
79efa585 SM |
2264 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2265 | The thread_info object owns the memory for the name. */ | |
2266 | ||
2267 | static const char * | |
2268 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2269 | { | |
2270 | if (info->priv != NULL) | |
a9334058 SM |
2271 | { |
2272 | const std::string &name = get_remote_thread_info (info)->name; | |
2273 | return !name.empty () ? name.c_str () : NULL; | |
2274 | } | |
79efa585 SM |
2275 | |
2276 | return NULL; | |
2277 | } | |
2278 | ||
c906108c SS |
2279 | /* About these extended threadlist and threadinfo packets. They are |
2280 | variable length packets but, the fields within them are often fixed | |
2281 | length. They are redundent enough to send over UDP as is the | |
2282 | remote protocol in general. There is a matching unit test module | |
2283 | in libstub. */ | |
2284 | ||
23860348 | 2285 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2286 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2287 | changable. */ |
cce74817 JM |
2288 | |
2289 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2290 | Plan to fix this. */ |
cce74817 | 2291 | |
23860348 | 2292 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2293 | |
9d1f7ab2 | 2294 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2295 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2296 | |
2297 | struct gdb_ext_thread_info | |
c5aa993b | 2298 | { |
23860348 | 2299 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2300 | int active; /* Has state interesting to GDB? |
23860348 | 2301 | regs, stack. */ |
2bc416ba | 2302 | char display[256]; /* Brief state display, name, |
cedea757 | 2303 | blocked/suspended. */ |
23860348 | 2304 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2305 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2306 | whatever. */ |
c5aa993b | 2307 | }; |
cce74817 JM |
2308 | |
2309 | /* The volume of remote transfers can be limited by submitting | |
2310 | a mask containing bits specifying the desired information. | |
2311 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2312 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2313 | |
2314 | #define TAG_THREADID 1 | |
2315 | #define TAG_EXISTS 2 | |
2316 | #define TAG_DISPLAY 4 | |
2317 | #define TAG_THREADNAME 8 | |
c5aa993b | 2318 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2319 | |
23860348 | 2320 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2321 | |
a14ed312 | 2322 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2323 | |
a14ed312 | 2324 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2325 | |
a14ed312 | 2326 | static char *pack_int (char *buf, int value); |
cce74817 | 2327 | |
a14ed312 | 2328 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2329 | |
a14ed312 | 2330 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2331 | |
23860348 | 2332 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2333 | |
23860348 | 2334 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2335 | |
23860348 | 2336 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2337 | |
23860348 | 2338 | static int threadref_to_int (threadref *ref); |
cce74817 | 2339 | |
23860348 | 2340 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2341 | |
23860348 | 2342 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2343 | |
2bc416ba | 2344 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2345 | threadref *id); |
cce74817 | 2346 | |
a14ed312 | 2347 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2348 | threadref *expectedref, |
a14ed312 KB |
2349 | struct gdb_ext_thread_info |
2350 | *info); | |
cce74817 JM |
2351 | |
2352 | ||
2bc416ba | 2353 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2354 | int fieldset, /*TAG mask */ |
a14ed312 | 2355 | struct gdb_ext_thread_info *info); |
cce74817 | 2356 | |
a14ed312 KB |
2357 | static char *pack_threadlist_request (char *pkt, int startflag, |
2358 | int threadcount, | |
23860348 | 2359 | threadref *nextthread); |
cce74817 | 2360 | |
a14ed312 KB |
2361 | static int parse_threadlist_response (char *pkt, |
2362 | int result_limit, | |
23860348 | 2363 | threadref *original_echo, |
2bc416ba | 2364 | threadref *resultlist, |
23860348 | 2365 | int *doneflag); |
cce74817 | 2366 | |
a14ed312 | 2367 | static int remote_get_threadlist (int startflag, |
23860348 | 2368 | threadref *nextthread, |
a14ed312 KB |
2369 | int result_limit, |
2370 | int *done, | |
2bc416ba | 2371 | int *result_count, |
23860348 | 2372 | threadref *threadlist); |
cce74817 | 2373 | |
23860348 | 2374 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2375 | |
a14ed312 KB |
2376 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2377 | void *context, int looplimit); | |
cce74817 | 2378 | |
23860348 | 2379 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2380 | |
82f73884 PA |
2381 | |
2382 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2383 | buffer we're allowed to write to. Returns | |
2384 | BUF+CHARACTERS_WRITTEN. */ | |
2385 | ||
2386 | static char * | |
2387 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2388 | { | |
2389 | int pid, tid; | |
2390 | struct remote_state *rs = get_remote_state (); | |
2391 | ||
2392 | if (remote_multi_process_p (rs)) | |
2393 | { | |
2394 | pid = ptid_get_pid (ptid); | |
2395 | if (pid < 0) | |
2396 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2397 | else | |
2398 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2399 | } | |
ba348170 | 2400 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2401 | if (tid < 0) |
2402 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2403 | else | |
2404 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2405 | ||
2406 | return buf; | |
2407 | } | |
2408 | ||
256642e8 PA |
2409 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2410 | last parsed char. Returns null_ptid if no thread id is found, and | |
2411 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2412 | |
2413 | static ptid_t | |
256642e8 | 2414 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2415 | { |
256642e8 PA |
2416 | const char *p = buf; |
2417 | const char *pp; | |
82f73884 | 2418 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2419 | |
2420 | if (*p == 'p') | |
2421 | { | |
2422 | /* Multi-process ptid. */ | |
2423 | pp = unpack_varlen_hex (p + 1, &pid); | |
2424 | if (*pp != '.') | |
b37520b6 | 2425 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2426 | |
2427 | p = pp; | |
2428 | pp = unpack_varlen_hex (p + 1, &tid); | |
2429 | if (obuf) | |
2430 | *obuf = pp; | |
ba348170 | 2431 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2432 | } |
2433 | ||
2434 | /* No multi-process. Just a tid. */ | |
2435 | pp = unpack_varlen_hex (p, &tid); | |
2436 | ||
c9f35b34 KB |
2437 | /* Return null_ptid when no thread id is found. */ |
2438 | if (p == pp) | |
2439 | { | |
2440 | if (obuf) | |
2441 | *obuf = pp; | |
2442 | return null_ptid; | |
2443 | } | |
2444 | ||
82f73884 | 2445 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2446 | what's in inferior_ptid, unless it's null at this point. If so, |
2447 | then since there's no way to know the pid of the reported | |
2448 | threads, use the magic number. */ | |
2449 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2450 | pid = ptid_get_pid (magic_null_ptid); | |
2451 | else | |
2452 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2453 | |
2454 | if (obuf) | |
2455 | *obuf = pp; | |
ba348170 | 2456 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2457 | } |
2458 | ||
c906108c | 2459 | static int |
fba45db2 | 2460 | stubhex (int ch) |
c906108c SS |
2461 | { |
2462 | if (ch >= 'a' && ch <= 'f') | |
2463 | return ch - 'a' + 10; | |
2464 | if (ch >= '0' && ch <= '9') | |
2465 | return ch - '0'; | |
2466 | if (ch >= 'A' && ch <= 'F') | |
2467 | return ch - 'A' + 10; | |
2468 | return -1; | |
2469 | } | |
2470 | ||
2471 | static int | |
fba45db2 | 2472 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2473 | { |
2474 | int nibble; | |
2475 | int retval = 0; | |
2476 | ||
2477 | while (fieldlength) | |
2478 | { | |
2479 | nibble = stubhex (*buff++); | |
2480 | retval |= nibble; | |
2481 | fieldlength--; | |
2482 | if (fieldlength) | |
2483 | retval = retval << 4; | |
2484 | } | |
2485 | return retval; | |
2486 | } | |
2487 | ||
c906108c | 2488 | static char * |
fba45db2 | 2489 | unpack_nibble (char *buf, int *val) |
c906108c | 2490 | { |
b7589f7d | 2491 | *val = fromhex (*buf++); |
c906108c SS |
2492 | return buf; |
2493 | } | |
2494 | ||
c906108c | 2495 | static char * |
fba45db2 | 2496 | unpack_byte (char *buf, int *value) |
c906108c SS |
2497 | { |
2498 | *value = stub_unpack_int (buf, 2); | |
2499 | return buf + 2; | |
2500 | } | |
2501 | ||
2502 | static char * | |
fba45db2 | 2503 | pack_int (char *buf, int value) |
c906108c SS |
2504 | { |
2505 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2506 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2507 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2508 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2509 | return buf; | |
2510 | } | |
2511 | ||
2512 | static char * | |
fba45db2 | 2513 | unpack_int (char *buf, int *value) |
c906108c SS |
2514 | { |
2515 | *value = stub_unpack_int (buf, 8); | |
2516 | return buf + 8; | |
2517 | } | |
2518 | ||
23860348 | 2519 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2520 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2521 | |
2522 | static char * | |
fba45db2 | 2523 | pack_string (char *pkt, char *string) |
c906108c SS |
2524 | { |
2525 | char ch; | |
2526 | int len; | |
2527 | ||
2528 | len = strlen (string); | |
2529 | if (len > 200) | |
23860348 | 2530 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2531 | pkt = pack_hex_byte (pkt, len); |
2532 | while (len-- > 0) | |
2533 | { | |
2534 | ch = *string++; | |
2535 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2536 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2537 | *pkt++ = ch; |
2538 | } | |
2539 | return pkt; | |
2540 | } | |
2541 | #endif /* 0 (unused) */ | |
2542 | ||
2543 | static char * | |
fba45db2 | 2544 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2545 | { |
2546 | while (length--) | |
2547 | *dest++ = *src++; | |
2548 | *dest = '\0'; | |
2549 | return src; | |
2550 | } | |
2551 | ||
2552 | static char * | |
fba45db2 | 2553 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2554 | { |
2555 | char *limit; | |
2556 | unsigned char *altid; | |
2557 | ||
2558 | altid = (unsigned char *) id; | |
2559 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2560 | while (pkt < limit) | |
2561 | pkt = pack_hex_byte (pkt, *altid++); | |
2562 | return pkt; | |
2563 | } | |
2564 | ||
2565 | ||
2566 | static char * | |
fba45db2 | 2567 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2568 | { |
2569 | char *altref; | |
2570 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2571 | int x, y; | |
2572 | ||
2573 | altref = (char *) id; | |
2574 | ||
2575 | while (inbuf < limit) | |
2576 | { | |
2577 | x = stubhex (*inbuf++); | |
2578 | y = stubhex (*inbuf++); | |
2579 | *altref++ = (x << 4) | y; | |
2580 | } | |
2581 | return inbuf; | |
2582 | } | |
2583 | ||
2584 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2585 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2586 | to use 64bit thread references internally. This is an adapter |
2587 | function. */ | |
2588 | ||
2589 | void | |
fba45db2 | 2590 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2591 | { |
2592 | unsigned char *scan; | |
2593 | ||
2594 | scan = (unsigned char *) id; | |
2595 | { | |
2596 | int i = 4; | |
2597 | while (i--) | |
2598 | *scan++ = 0; | |
2599 | } | |
2600 | *scan++ = (value >> 24) & 0xff; | |
2601 | *scan++ = (value >> 16) & 0xff; | |
2602 | *scan++ = (value >> 8) & 0xff; | |
2603 | *scan++ = (value & 0xff); | |
2604 | } | |
2605 | ||
2606 | static int | |
fba45db2 | 2607 | threadref_to_int (threadref *ref) |
c906108c SS |
2608 | { |
2609 | int i, value = 0; | |
2610 | unsigned char *scan; | |
2611 | ||
cfd77fa1 | 2612 | scan = *ref; |
c906108c SS |
2613 | scan += 4; |
2614 | i = 4; | |
2615 | while (i-- > 0) | |
2616 | value = (value << 8) | ((*scan++) & 0xff); | |
2617 | return value; | |
2618 | } | |
2619 | ||
2620 | static void | |
fba45db2 | 2621 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2622 | { |
2623 | int i; | |
2624 | unsigned char *csrc, *cdest; | |
2625 | ||
2626 | csrc = (unsigned char *) src; | |
2627 | cdest = (unsigned char *) dest; | |
2628 | i = 8; | |
2629 | while (i--) | |
2630 | *cdest++ = *csrc++; | |
2631 | } | |
2632 | ||
2633 | static int | |
fba45db2 | 2634 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2635 | { |
23860348 | 2636 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2637 | #if 0 |
2638 | unsigned char *srcp, *destp; | |
2639 | int i, result; | |
2640 | srcp = (char *) src; | |
2641 | destp = (char *) dest; | |
2642 | ||
2643 | result = 1; | |
2644 | while (i-- > 0) | |
2645 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2646 | return result; | |
2647 | #endif | |
2648 | return 1; | |
2649 | } | |
2650 | ||
2651 | /* | |
c5aa993b JM |
2652 | threadid:1, # always request threadid |
2653 | context_exists:2, | |
2654 | display:4, | |
2655 | unique_name:8, | |
2656 | more_display:16 | |
2657 | */ | |
c906108c SS |
2658 | |
2659 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2660 | ||
2661 | static char * | |
fba45db2 | 2662 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2663 | { |
23860348 MS |
2664 | *pkt++ = 'q'; /* Info Query */ |
2665 | *pkt++ = 'P'; /* process or thread info */ | |
2666 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2667 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2668 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2669 | return pkt; |
2670 | } | |
2671 | ||
23860348 | 2672 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2673 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2674 | add more fields as time goes by. */ |
c906108c | 2675 | |
23860348 | 2676 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2677 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2678 | fetch registers and its stack? */ |
c5aa993b | 2679 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2680 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2681 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2682 | the process. */ |
c906108c SS |
2683 | |
2684 | static int | |
fba45db2 KB |
2685 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2686 | struct gdb_ext_thread_info *info) | |
c906108c | 2687 | { |
d01949b6 | 2688 | struct remote_state *rs = get_remote_state (); |
c906108c | 2689 | int mask, length; |
cfd77fa1 | 2690 | int tag; |
c906108c | 2691 | threadref ref; |
6d820c5c | 2692 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2693 | int retval = 1; |
2694 | ||
23860348 | 2695 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2696 | info->active = 0; |
2697 | info->display[0] = '\0'; | |
2698 | info->shortname[0] = '\0'; | |
2699 | info->more_display[0] = '\0'; | |
2700 | ||
23860348 MS |
2701 | /* Assume the characters indicating the packet type have been |
2702 | stripped. */ | |
c906108c SS |
2703 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2704 | pkt = unpack_threadid (pkt, &ref); | |
2705 | ||
2706 | if (mask == 0) | |
8a3fe4f8 | 2707 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2708 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2709 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2710 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2711 | return 0; |
2712 | } | |
2713 | copy_threadref (&info->threadid, &ref); | |
2714 | ||
23860348 | 2715 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2716 | |
23860348 MS |
2717 | /* Packets are terminated with nulls. */ |
2718 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2719 | { |
2720 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2721 | pkt = unpack_byte (pkt, &length); /* length */ |
2722 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2723 | { |
8a3fe4f8 | 2724 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2725 | retval = 0; |
2726 | break; | |
2727 | } | |
2728 | if (tag == TAG_THREADID) | |
2729 | { | |
2730 | if (length != 16) | |
2731 | { | |
8a3fe4f8 | 2732 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2733 | retval = 0; |
2734 | break; | |
2735 | } | |
2736 | pkt = unpack_threadid (pkt, &ref); | |
2737 | mask = mask & ~TAG_THREADID; | |
2738 | continue; | |
2739 | } | |
2740 | if (tag == TAG_EXISTS) | |
2741 | { | |
2742 | info->active = stub_unpack_int (pkt, length); | |
2743 | pkt += length; | |
2744 | mask = mask & ~(TAG_EXISTS); | |
2745 | if (length > 8) | |
2746 | { | |
8a3fe4f8 | 2747 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2748 | retval = 0; |
2749 | break; | |
2750 | } | |
2751 | continue; | |
2752 | } | |
2753 | if (tag == TAG_THREADNAME) | |
2754 | { | |
2755 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2756 | mask = mask & ~TAG_THREADNAME; | |
2757 | continue; | |
2758 | } | |
2759 | if (tag == TAG_DISPLAY) | |
2760 | { | |
2761 | pkt = unpack_string (pkt, &info->display[0], length); | |
2762 | mask = mask & ~TAG_DISPLAY; | |
2763 | continue; | |
2764 | } | |
2765 | if (tag == TAG_MOREDISPLAY) | |
2766 | { | |
2767 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2768 | mask = mask & ~TAG_MOREDISPLAY; | |
2769 | continue; | |
2770 | } | |
8a3fe4f8 | 2771 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2772 | break; /* Not a tag we know about. */ |
c906108c SS |
2773 | } |
2774 | return retval; | |
2775 | } | |
2776 | ||
2777 | static int | |
fba45db2 KB |
2778 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2779 | struct gdb_ext_thread_info *info) | |
c906108c | 2780 | { |
d01949b6 | 2781 | struct remote_state *rs = get_remote_state (); |
c906108c | 2782 | int result; |
c906108c | 2783 | |
2e9f7625 DJ |
2784 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2785 | putpkt (rs->buf); | |
6d820c5c | 2786 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2787 | |
2788 | if (rs->buf[0] == '\0') | |
2789 | return 0; | |
2790 | ||
2e9f7625 | 2791 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2792 | threadid, info); |
c906108c SS |
2793 | return result; |
2794 | } | |
2795 | ||
c906108c SS |
2796 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2797 | ||
2798 | static char * | |
fba45db2 KB |
2799 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2800 | threadref *nextthread) | |
c906108c SS |
2801 | { |
2802 | *pkt++ = 'q'; /* info query packet */ | |
2803 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2804 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2805 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2806 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2807 | *pkt = '\0'; | |
2808 | return pkt; | |
2809 | } | |
2810 | ||
2811 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2812 | ||
2813 | static int | |
fba45db2 KB |
2814 | parse_threadlist_response (char *pkt, int result_limit, |
2815 | threadref *original_echo, threadref *resultlist, | |
2816 | int *doneflag) | |
c906108c | 2817 | { |
d01949b6 | 2818 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2819 | char *limit; |
2820 | int count, resultcount, done; | |
2821 | ||
2822 | resultcount = 0; | |
2823 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2824 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2825 | /* done parse past here */ |
c906108c SS |
2826 | pkt = unpack_byte (pkt, &count); /* count field */ |
2827 | pkt = unpack_nibble (pkt, &done); | |
2828 | /* The first threadid is the argument threadid. */ | |
2829 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2830 | while ((count-- > 0) && (pkt < limit)) | |
2831 | { | |
2832 | pkt = unpack_threadid (pkt, resultlist++); | |
2833 | if (resultcount++ >= result_limit) | |
2834 | break; | |
2835 | } | |
2836 | if (doneflag) | |
2837 | *doneflag = done; | |
2838 | return resultcount; | |
2839 | } | |
2840 | ||
6dc54d91 PA |
2841 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2842 | qL packet is not supported, 0 on error and 1 on success. */ | |
2843 | ||
c906108c | 2844 | static int |
fba45db2 KB |
2845 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2846 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2847 | { |
d01949b6 | 2848 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2849 | int result = 1; |
2850 | ||
23860348 | 2851 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2852 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2853 | >= get_remote_packet_size ()) | |
ea9c271d | 2854 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2855 | |
6d820c5c DJ |
2856 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2857 | putpkt (rs->buf); | |
2858 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2859 | if (*rs->buf == '\0') |
6dc54d91 PA |
2860 | { |
2861 | /* Packet not supported. */ | |
2862 | return -1; | |
2863 | } | |
2864 | ||
2865 | *result_count = | |
2866 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2867 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2868 | |
0d031856 | 2869 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2870 | { |
23860348 MS |
2871 | /* FIXME: This is a good reason to drop the packet. */ |
2872 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2873 | /* Possabilities : |
2874 | retransmit immediatly - race conditions | |
2875 | retransmit after timeout - yes | |
2876 | exit | |
2877 | wait for packet, then exit | |
2878 | */ | |
8a3fe4f8 | 2879 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2880 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2881 | } |
2882 | if (*result_count <= 0) | |
2883 | { | |
2884 | if (*done != 1) | |
2885 | { | |
8a3fe4f8 | 2886 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2887 | result = 0; |
2888 | } | |
2889 | return result; /* break; */ | |
2890 | } | |
2891 | if (*result_count > result_limit) | |
2892 | { | |
2893 | *result_count = 0; | |
8a3fe4f8 | 2894 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2895 | return 0; |
2896 | } | |
2897 | return result; | |
2898 | } | |
2899 | ||
6dc54d91 PA |
2900 | /* Fetch the list of remote threads, with the qL packet, and call |
2901 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2902 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2903 | STEPFUNCTION returns false. If the packet is not supported, | |
2904 | returns -1. */ | |
c906108c | 2905 | |
c906108c | 2906 | static int |
fba45db2 KB |
2907 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2908 | int looplimit) | |
c906108c | 2909 | { |
0d031856 | 2910 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2911 | int done, i, result_count; |
2912 | int startflag = 1; | |
2913 | int result = 1; | |
2914 | int loopcount = 0; | |
c906108c SS |
2915 | |
2916 | done = 0; | |
2917 | while (!done) | |
2918 | { | |
2919 | if (loopcount++ > looplimit) | |
2920 | { | |
2921 | result = 0; | |
8a3fe4f8 | 2922 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2923 | break; |
2924 | } | |
6dc54d91 PA |
2925 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2926 | MAXTHREADLISTRESULTS, | |
2927 | &done, &result_count, | |
2928 | rs->resultthreadlist); | |
2929 | if (result <= 0) | |
2930 | break; | |
23860348 | 2931 | /* Clear for later iterations. */ |
c906108c SS |
2932 | startflag = 0; |
2933 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2934 | if (result_count >= 1) | |
0d031856 TT |
2935 | copy_threadref (&rs->nextthread, |
2936 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2937 | i = 0; |
2938 | while (result_count--) | |
6dc54d91 PA |
2939 | { |
2940 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2941 | { | |
2942 | result = 0; | |
2943 | break; | |
2944 | } | |
2945 | } | |
c906108c SS |
2946 | } |
2947 | return result; | |
2948 | } | |
2949 | ||
6dc54d91 PA |
2950 | /* A thread found on the remote target. */ |
2951 | ||
21fe1c75 | 2952 | struct thread_item |
6dc54d91 | 2953 | { |
21fe1c75 SM |
2954 | explicit thread_item (ptid_t ptid_) |
2955 | : ptid (ptid_) | |
2956 | {} | |
2957 | ||
2958 | thread_item (thread_item &&other) = default; | |
2959 | thread_item &operator= (thread_item &&other) = default; | |
2960 | ||
2961 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
2962 | ||
6dc54d91 PA |
2963 | /* The thread's PTID. */ |
2964 | ptid_t ptid; | |
2965 | ||
21fe1c75 SM |
2966 | /* The thread's extra info. */ |
2967 | std::string extra; | |
6dc54d91 | 2968 | |
21fe1c75 SM |
2969 | /* The thread's name. */ |
2970 | std::string name; | |
79efa585 | 2971 | |
6dc54d91 | 2972 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 2973 | int core = -1; |
f6327dcb KB |
2974 | |
2975 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 2976 | gdb::byte_vector thread_handle; |
21fe1c75 | 2977 | }; |
6dc54d91 PA |
2978 | |
2979 | /* Context passed around to the various methods listing remote | |
2980 | threads. As new threads are found, they're added to the ITEMS | |
2981 | vector. */ | |
2982 | ||
2983 | struct threads_listing_context | |
2984 | { | |
21fe1c75 SM |
2985 | /* Return true if this object contains an entry for a thread with ptid |
2986 | PTID. */ | |
6dc54d91 | 2987 | |
21fe1c75 SM |
2988 | bool contains_thread (ptid_t ptid) const |
2989 | { | |
2990 | auto match_ptid = [&] (const thread_item &item) | |
2991 | { | |
2992 | return item.ptid == ptid; | |
2993 | }; | |
80134cf5 | 2994 | |
21fe1c75 SM |
2995 | auto it = std::find_if (this->items.begin (), |
2996 | this->items.end (), | |
2997 | match_ptid); | |
80134cf5 | 2998 | |
21fe1c75 SM |
2999 | return it != this->items.end (); |
3000 | } | |
80134cf5 | 3001 | |
21fe1c75 | 3002 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3003 | |
21fe1c75 SM |
3004 | void remove_thread (ptid_t ptid) |
3005 | { | |
3006 | auto match_ptid = [&] (const thread_item &item) | |
3007 | { | |
3008 | return item.ptid == ptid; | |
3009 | }; | |
cbb8991c | 3010 | |
21fe1c75 SM |
3011 | auto it = std::remove_if (this->items.begin (), |
3012 | this->items.end (), | |
3013 | match_ptid); | |
cbb8991c | 3014 | |
21fe1c75 SM |
3015 | if (it != this->items.end ()) |
3016 | this->items.erase (it); | |
3017 | } | |
3018 | ||
3019 | /* The threads found on the remote target. */ | |
3020 | std::vector<thread_item> items; | |
3021 | }; | |
cbb8991c | 3022 | |
c906108c | 3023 | static int |
6dc54d91 | 3024 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3025 | { |
19ba03f4 SM |
3026 | struct threads_listing_context *context |
3027 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3028 | int pid = inferior_ptid.pid (); |
3029 | int lwp = threadref_to_int (ref); | |
3030 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3031 | |
21fe1c75 | 3032 | context->items.emplace_back (ptid); |
6dc54d91 | 3033 | |
c906108c SS |
3034 | return 1; /* continue iterator */ |
3035 | } | |
3036 | ||
3037 | #define CRAZY_MAX_THREADS 1000 | |
3038 | ||
39f77062 KB |
3039 | static ptid_t |
3040 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3041 | { |
d01949b6 | 3042 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3043 | |
3044 | putpkt ("qC"); | |
6d820c5c | 3045 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3046 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3047 | { |
256642e8 | 3048 | const char *obuf; |
c9f35b34 KB |
3049 | ptid_t result; |
3050 | ||
3051 | result = read_ptid (&rs->buf[2], &obuf); | |
3052 | if (*obuf != '\0' && remote_debug) | |
3053 | fprintf_unfiltered (gdb_stdlog, | |
3054 | "warning: garbage in qC reply\n"); | |
3055 | ||
3056 | return result; | |
3057 | } | |
c906108c SS |
3058 | else |
3059 | return oldpid; | |
3060 | } | |
3061 | ||
6dc54d91 | 3062 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3063 | |
6dc54d91 PA |
3064 | static int |
3065 | remote_get_threads_with_ql (struct target_ops *ops, | |
3066 | struct threads_listing_context *context) | |
c906108c | 3067 | { |
6dc54d91 PA |
3068 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3069 | CRAZY_MAX_THREADS) >= 0) | |
3070 | return 1; | |
3071 | ||
3072 | return 0; | |
c906108c SS |
3073 | } |
3074 | ||
dc146f7c VP |
3075 | #if defined(HAVE_LIBEXPAT) |
3076 | ||
dc146f7c VP |
3077 | static void |
3078 | start_thread (struct gdb_xml_parser *parser, | |
3079 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3080 | void *user_data, |
3081 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3082 | { |
19ba03f4 SM |
3083 | struct threads_listing_context *data |
3084 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3085 | struct gdb_xml_value *attr; |
dc146f7c | 3086 | |
4d0fdd9b | 3087 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3088 | ptid_t ptid = read_ptid (id, NULL); |
3089 | ||
3090 | data->items.emplace_back (ptid); | |
3091 | thread_item &item = data->items.back (); | |
dc146f7c | 3092 | |
3d2c1d41 PA |
3093 | attr = xml_find_attribute (attributes, "core"); |
3094 | if (attr != NULL) | |
4d0fdd9b | 3095 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3096 | |
79efa585 | 3097 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3098 | if (attr != NULL) |
4d0fdd9b | 3099 | item.name = (const char *) attr->value.get (); |
79efa585 | 3100 | |
f6327dcb KB |
3101 | attr = xml_find_attribute (attributes, "handle"); |
3102 | if (attr != NULL) | |
4d0fdd9b | 3103 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3104 | } |
3105 | ||
3106 | static void | |
3107 | end_thread (struct gdb_xml_parser *parser, | |
3108 | const struct gdb_xml_element *element, | |
3109 | void *user_data, const char *body_text) | |
3110 | { | |
19ba03f4 SM |
3111 | struct threads_listing_context *data |
3112 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3113 | |
21fe1c75 SM |
3114 | if (body_text != NULL && *body_text != '\0') |
3115 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3116 | } |
3117 | ||
3118 | const struct gdb_xml_attribute thread_attributes[] = { | |
3119 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3120 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3121 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3122 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3123 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3124 | }; | |
3125 | ||
3126 | const struct gdb_xml_element thread_children[] = { | |
3127 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3128 | }; | |
3129 | ||
3130 | const struct gdb_xml_element threads_children[] = { | |
3131 | { "thread", thread_attributes, thread_children, | |
3132 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3133 | start_thread, end_thread }, | |
3134 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3135 | }; | |
3136 | ||
3137 | const struct gdb_xml_element threads_elements[] = { | |
3138 | { "threads", NULL, threads_children, | |
3139 | GDB_XML_EF_NONE, NULL, NULL }, | |
3140 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3141 | }; | |
3142 | ||
3143 | #endif | |
3144 | ||
6dc54d91 | 3145 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3146 | |
6dc54d91 PA |
3147 | static int |
3148 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3149 | struct threads_listing_context *context) | |
0f71a2f6 | 3150 | { |
dc146f7c | 3151 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3152 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3153 | { |
b7b030ad TT |
3154 | gdb::unique_xmalloc_ptr<char> xml |
3155 | = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); | |
efc0eabd | 3156 | |
6dc54d91 | 3157 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3158 | { |
6dc54d91 | 3159 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
b7b030ad | 3160 | threads_elements, xml.get (), context); |
dc146f7c VP |
3161 | } |
3162 | ||
6dc54d91 | 3163 | return 1; |
dc146f7c VP |
3164 | } |
3165 | #endif | |
3166 | ||
6dc54d91 PA |
3167 | return 0; |
3168 | } | |
3169 | ||
3170 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3171 | ||
3172 | static int | |
3173 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3174 | struct threads_listing_context *context) | |
3175 | { | |
3176 | struct remote_state *rs = get_remote_state (); | |
3177 | ||
b80fafe3 | 3178 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3179 | { |
256642e8 | 3180 | const char *bufp; |
6dc54d91 | 3181 | |
9d1f7ab2 | 3182 | putpkt ("qfThreadInfo"); |
6d820c5c | 3183 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3184 | bufp = rs->buf; |
9d1f7ab2 | 3185 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3186 | { |
9d1f7ab2 MS |
3187 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3188 | { | |
3189 | do | |
3190 | { | |
21fe1c75 SM |
3191 | ptid_t ptid = read_ptid (bufp, &bufp); |
3192 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3193 | } |
3194 | while (*bufp++ == ','); /* comma-separated list */ | |
3195 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3196 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3197 | bufp = rs->buf; |
9d1f7ab2 | 3198 | } |
6dc54d91 PA |
3199 | return 1; |
3200 | } | |
3201 | else | |
3202 | { | |
3203 | /* Packet not recognized. */ | |
3204 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3205 | } |
3206 | } | |
3207 | ||
6dc54d91 PA |
3208 | return 0; |
3209 | } | |
3210 | ||
e8032dde | 3211 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3212 | targets. */ |
3213 | ||
3214 | static void | |
e8032dde | 3215 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 | 3216 | { |
6dc54d91 | 3217 | struct threads_listing_context context; |
ab970af1 | 3218 | int got_list = 0; |
e8032dde | 3219 | |
6dc54d91 PA |
3220 | /* We have a few different mechanisms to fetch the thread list. Try |
3221 | them all, starting with the most preferred one first, falling | |
3222 | back to older methods. */ | |
3223 | if (remote_get_threads_with_qxfer (ops, &context) | |
3224 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3225 | || remote_get_threads_with_ql (ops, &context)) | |
3226 | { | |
ab970af1 PA |
3227 | struct thread_info *tp, *tmp; |
3228 | ||
3229 | got_list = 1; | |
3230 | ||
21fe1c75 | 3231 | if (context.items.empty () |
7d1a114c PA |
3232 | && remote_thread_always_alive (ops, inferior_ptid)) |
3233 | { | |
3234 | /* Some targets don't really support threads, but still | |
3235 | reply an (empty) thread list in response to the thread | |
3236 | listing packets, instead of replying "packet not | |
3237 | supported". Exit early so we don't delete the main | |
3238 | thread. */ | |
7d1a114c PA |
3239 | return; |
3240 | } | |
3241 | ||
ab970af1 PA |
3242 | /* CONTEXT now holds the current thread list on the remote |
3243 | target end. Delete GDB-side threads no longer found on the | |
3244 | target. */ | |
8a06aea7 | 3245 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3246 | { |
21fe1c75 | 3247 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3248 | { |
3249 | /* Not found. */ | |
3250 | delete_thread (tp->ptid); | |
3251 | } | |
cbb8991c DB |
3252 | } |
3253 | ||
3254 | /* Remove any unreported fork child threads from CONTEXT so | |
3255 | that we don't interfere with follow fork, which is where | |
3256 | creation of such threads is handled. */ | |
3257 | remove_new_fork_children (&context); | |
74531fed | 3258 | |
ab970af1 | 3259 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3260 | for (thread_item &item : context.items) |
6dc54d91 | 3261 | { |
21fe1c75 | 3262 | if (item.ptid != null_ptid) |
6dc54d91 | 3263 | { |
6dc54d91 | 3264 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3265 | executing until proven otherwise with a stop reply. |
3266 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3267 | stopped. */ |
0d5b594f | 3268 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3269 | |
21fe1c75 | 3270 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3271 | |
7aabaf9d | 3272 | remote_thread_info *info = get_remote_thread_info (item.ptid); |
21fe1c75 | 3273 | info->core = item.core; |
7aabaf9d SM |
3274 | info->extra = std::move (item.extra); |
3275 | info->name = std::move (item.name); | |
3276 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3277 | } |
3278 | } | |
3279 | } | |
3280 | ||
ab970af1 PA |
3281 | if (!got_list) |
3282 | { | |
3283 | /* If no thread listing method is supported, then query whether | |
3284 | each known thread is alive, one by one, with the T packet. | |
3285 | If the target doesn't support threads at all, then this is a | |
3286 | no-op. See remote_thread_alive. */ | |
3287 | prune_threads (); | |
3288 | } | |
9d1f7ab2 MS |
3289 | } |
3290 | ||
802188a7 | 3291 | /* |
9d1f7ab2 MS |
3292 | * Collect a descriptive string about the given thread. |
3293 | * The target may say anything it wants to about the thread | |
3294 | * (typically info about its blocked / runnable state, name, etc.). | |
3295 | * This string will appear in the info threads display. | |
802188a7 | 3296 | * |
9d1f7ab2 MS |
3297 | * Optional: targets are not required to implement this function. |
3298 | */ | |
3299 | ||
7a114964 | 3300 | static const char * |
c15906d8 | 3301 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3302 | { |
d01949b6 | 3303 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3304 | int result; |
3305 | int set; | |
3306 | threadref id; | |
3307 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3308 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3309 | int n = 0; /* position in display_buf */ |
3310 | ||
5d93a237 | 3311 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3312 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3313 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3314 | |
60e569b9 | 3315 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3316 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3317 | /* This is the main thread which was added by GDB. The remote |
3318 | server doesn't know about it. */ | |
3319 | return NULL; | |
3320 | ||
4082afcc | 3321 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3322 | { |
3323 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3324 | |
7aabaf9d | 3325 | if (info != NULL && info->priv != NULL) |
a9334058 SM |
3326 | { |
3327 | const std::string &extra = get_remote_thread_info (info)->extra; | |
3328 | return !extra.empty () ? extra.c_str () : NULL; | |
3329 | } | |
dc146f7c VP |
3330 | else |
3331 | return NULL; | |
3332 | } | |
3333 | ||
b80fafe3 | 3334 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3335 | { |
82f73884 PA |
3336 | char *b = rs->buf; |
3337 | char *endb = rs->buf + get_remote_packet_size (); | |
3338 | ||
3339 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3340 | b += strlen (b); | |
3341 | write_ptid (b, endb, tp->ptid); | |
3342 | ||
2e9f7625 | 3343 | putpkt (rs->buf); |
6d820c5c | 3344 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3345 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3346 | { |
325fac50 | 3347 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3348 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3349 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3350 | return display_buf; |
3351 | } | |
0f71a2f6 | 3352 | } |
9d1f7ab2 MS |
3353 | |
3354 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3355 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3356 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3357 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3358 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3359 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3360 | if (threadinfo.active) | |
0f71a2f6 | 3361 | { |
9d1f7ab2 | 3362 | if (*threadinfo.shortname) |
2bc416ba | 3363 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3364 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3365 | if (*threadinfo.display) |
2bc416ba | 3366 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3367 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3368 | if (*threadinfo.more_display) |
2bc416ba | 3369 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3370 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3371 | |
3372 | if (n > 0) | |
c5aa993b | 3373 | { |
23860348 | 3374 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3375 | if (',' == display_buf[n-1]) |
3376 | display_buf[n-1] = ' '; | |
3377 | return display_buf; | |
c5aa993b | 3378 | } |
0f71a2f6 | 3379 | } |
9d1f7ab2 | 3380 | return NULL; |
0f71a2f6 | 3381 | } |
c906108c | 3382 | \f |
c5aa993b | 3383 | |
0fb4aa4b | 3384 | static int |
61fc905d | 3385 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3386 | struct static_tracepoint_marker *marker) |
3387 | { | |
3388 | struct remote_state *rs = get_remote_state (); | |
3389 | char *p = rs->buf; | |
3390 | ||
bba74b36 | 3391 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3392 | p += strlen (p); |
3393 | p += hexnumstr (p, addr); | |
3394 | putpkt (rs->buf); | |
3395 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3396 | p = rs->buf; | |
3397 | ||
3398 | if (*p == 'E') | |
3399 | error (_("Remote failure reply: %s"), p); | |
3400 | ||
3401 | if (*p++ == 'm') | |
3402 | { | |
256642e8 | 3403 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
0fb4aa4b PA |
3404 | return 1; |
3405 | } | |
3406 | ||
3407 | return 0; | |
3408 | } | |
3409 | ||
0fb4aa4b | 3410 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3411 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3412 | const char *strid) | |
0fb4aa4b PA |
3413 | { |
3414 | struct remote_state *rs = get_remote_state (); | |
3415 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3416 | struct static_tracepoint_marker *marker = NULL; | |
3417 | struct cleanup *old_chain; | |
256642e8 | 3418 | const char *p; |
0fb4aa4b PA |
3419 | |
3420 | /* Ask for a first packet of static tracepoint marker | |
3421 | definition. */ | |
3422 | putpkt ("qTfSTM"); | |
3423 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3424 | p = rs->buf; | |
3425 | if (*p == 'E') | |
3426 | error (_("Remote failure reply: %s"), p); | |
3427 | ||
3428 | old_chain = make_cleanup (free_current_marker, &marker); | |
3429 | ||
3430 | while (*p++ == 'm') | |
3431 | { | |
3432 | if (marker == NULL) | |
3433 | marker = XCNEW (struct static_tracepoint_marker); | |
3434 | ||
3435 | do | |
3436 | { | |
3437 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3438 | ||
3439 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3440 | { | |
3441 | VEC_safe_push (static_tracepoint_marker_p, | |
3442 | markers, marker); | |
3443 | marker = NULL; | |
3444 | } | |
3445 | else | |
3446 | { | |
3447 | release_static_tracepoint_marker (marker); | |
3448 | memset (marker, 0, sizeof (*marker)); | |
3449 | } | |
3450 | } | |
3451 | while (*p++ == ','); /* comma-separated list */ | |
3452 | /* Ask for another packet of static tracepoint definition. */ | |
3453 | putpkt ("qTsSTM"); | |
3454 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3455 | p = rs->buf; | |
3456 | } | |
3457 | ||
3458 | do_cleanups (old_chain); | |
3459 | return markers; | |
3460 | } | |
3461 | ||
3462 | \f | |
10760264 JB |
3463 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3464 | ||
3465 | static ptid_t | |
1e6b91a4 | 3466 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3467 | { |
ba348170 | 3468 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3469 | } |
3470 | \f | |
3471 | ||
24b06219 | 3472 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3473 | |
3474 | static void | |
fba45db2 | 3475 | extended_remote_restart (void) |
c906108c | 3476 | { |
d01949b6 | 3477 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3478 | |
3479 | /* Send the restart command; for reasons I don't understand the | |
3480 | remote side really expects a number after the "R". */ | |
ea9c271d | 3481 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3482 | putpkt (rs->buf); |
c906108c | 3483 | |
ad9a8f3f | 3484 | remote_fileio_reset (); |
c906108c SS |
3485 | } |
3486 | \f | |
3487 | /* Clean up connection to a remote debugger. */ | |
3488 | ||
c906108c | 3489 | static void |
de90e03d | 3490 | remote_close (struct target_ops *self) |
c906108c | 3491 | { |
5d93a237 TT |
3492 | struct remote_state *rs = get_remote_state (); |
3493 | ||
3494 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3495 | return; /* already closed */ |
3496 | ||
048094ac | 3497 | /* Make sure we leave stdin registered in the event loop. */ |
e3594fd1 | 3498 | remote_terminal_ours (self); |
ce5ce7ed | 3499 | |
5d93a237 TT |
3500 | serial_close (rs->remote_desc); |
3501 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3502 | |
3503 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3504 | of all the inferiors and their threads we were controlling. |
3505 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3506 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3507 | inferior_ptid = null_ptid; |
f67fd822 | 3508 | discard_all_inferiors (); |
ce5ce7ed | 3509 | |
f48ff2a7 YQ |
3510 | /* We are closing the remote target, so we should discard |
3511 | everything of this target. */ | |
bcc75809 | 3512 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3513 | |
3514 | if (remote_async_inferior_event_token) | |
3515 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3516 | |
5965e028 | 3517 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3518 | |
3519 | trace_reset_local_state (); | |
c906108c SS |
3520 | } |
3521 | ||
23860348 | 3522 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3523 | |
3524 | static void | |
fba45db2 | 3525 | get_offsets (void) |
c906108c | 3526 | { |
d01949b6 | 3527 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3528 | char *buf; |
085dd6e6 | 3529 | char *ptr; |
31d99776 DJ |
3530 | int lose, num_segments = 0, do_sections, do_segments; |
3531 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3532 | struct section_offsets *offs; |
31d99776 DJ |
3533 | struct symfile_segment_data *data; |
3534 | ||
3535 | if (symfile_objfile == NULL) | |
3536 | return; | |
c906108c SS |
3537 | |
3538 | putpkt ("qOffsets"); | |
6d820c5c | 3539 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3540 | buf = rs->buf; |
c906108c SS |
3541 | |
3542 | if (buf[0] == '\000') | |
3543 | return; /* Return silently. Stub doesn't support | |
23860348 | 3544 | this command. */ |
c906108c SS |
3545 | if (buf[0] == 'E') |
3546 | { | |
8a3fe4f8 | 3547 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3548 | return; |
3549 | } | |
3550 | ||
3551 | /* Pick up each field in turn. This used to be done with scanf, but | |
3552 | scanf will make trouble if CORE_ADDR size doesn't match | |
3553 | conversion directives correctly. The following code will work | |
3554 | with any size of CORE_ADDR. */ | |
3555 | text_addr = data_addr = bss_addr = 0; | |
3556 | ptr = buf; | |
3557 | lose = 0; | |
3558 | ||
61012eef | 3559 | if (startswith (ptr, "Text=")) |
c906108c SS |
3560 | { |
3561 | ptr += 5; | |
3562 | /* Don't use strtol, could lose on big values. */ | |
3563 | while (*ptr && *ptr != ';') | |
3564 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3565 | |
61012eef | 3566 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3567 | { |
3568 | ptr += 6; | |
3569 | while (*ptr && *ptr != ';') | |
3570 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3571 | } | |
3572 | else | |
3573 | lose = 1; | |
3574 | ||
61012eef | 3575 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3576 | { |
3577 | ptr += 5; | |
3578 | while (*ptr && *ptr != ';') | |
3579 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3580 | |
31d99776 DJ |
3581 | if (bss_addr != data_addr) |
3582 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3583 | } | |
3584 | else | |
3585 | lose = 1; | |
3586 | } | |
61012eef | 3587 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3588 | { |
31d99776 DJ |
3589 | ptr += 8; |
3590 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3591 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3592 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3593 | num_segments = 1; | |
3594 | ||
61012eef | 3595 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3596 | { |
3597 | ptr += 9; | |
3598 | while (*ptr && *ptr != ';') | |
3599 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3600 | num_segments++; | |
3601 | } | |
c906108c SS |
3602 | } |
3603 | else | |
3604 | lose = 1; | |
3605 | ||
3606 | if (lose) | |
8a3fe4f8 | 3607 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3608 | else if (*ptr != '\0') |
3609 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3610 | |
802188a7 | 3611 | offs = ((struct section_offsets *) |
a39a16c4 | 3612 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3613 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3614 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3615 | |
31d99776 DJ |
3616 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3617 | do_segments = (data != NULL); | |
3618 | do_sections = num_segments == 0; | |
c906108c | 3619 | |
28c32713 | 3620 | if (num_segments > 0) |
31d99776 | 3621 | { |
31d99776 DJ |
3622 | segments[0] = text_addr; |
3623 | segments[1] = data_addr; | |
3624 | } | |
28c32713 JB |
3625 | /* If we have two segments, we can still try to relocate everything |
3626 | by assuming that the .text and .data offsets apply to the whole | |
3627 | text and data segments. Convert the offsets given in the packet | |
3628 | to base addresses for symfile_map_offsets_to_segments. */ | |
3629 | else if (data && data->num_segments == 2) | |
3630 | { | |
3631 | segments[0] = data->segment_bases[0] + text_addr; | |
3632 | segments[1] = data->segment_bases[1] + data_addr; | |
3633 | num_segments = 2; | |
3634 | } | |
8d385431 DJ |
3635 | /* If the object file has only one segment, assume that it is text |
3636 | rather than data; main programs with no writable data are rare, | |
3637 | but programs with no code are useless. Of course the code might | |
3638 | have ended up in the data segment... to detect that we would need | |
3639 | the permissions here. */ | |
3640 | else if (data && data->num_segments == 1) | |
3641 | { | |
3642 | segments[0] = data->segment_bases[0] + text_addr; | |
3643 | num_segments = 1; | |
3644 | } | |
28c32713 JB |
3645 | /* There's no way to relocate by segment. */ |
3646 | else | |
3647 | do_segments = 0; | |
31d99776 DJ |
3648 | |
3649 | if (do_segments) | |
3650 | { | |
3651 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3652 | offs, num_segments, segments); | |
3653 | ||
3654 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3655 | error (_("Can not handle qOffsets TextSeg " |
3656 | "response with this symbol file")); | |
31d99776 DJ |
3657 | |
3658 | if (ret > 0) | |
3659 | do_sections = 0; | |
3660 | } | |
c906108c | 3661 | |
9ef895d6 DJ |
3662 | if (data) |
3663 | free_symfile_segment_data (data); | |
31d99776 DJ |
3664 | |
3665 | if (do_sections) | |
3666 | { | |
3667 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3668 | ||
3e43a32a MS |
3669 | /* This is a temporary kludge to force data and bss to use the |
3670 | same offsets because that's what nlmconv does now. The real | |
3671 | solution requires changes to the stub and remote.c that I | |
3672 | don't have time to do right now. */ | |
31d99776 DJ |
3673 | |
3674 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3675 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3676 | } | |
c906108c SS |
3677 | |
3678 | objfile_relocate (symfile_objfile, offs); | |
3679 | } | |
3680 | ||
9a7071a8 JB |
3681 | /* Send interrupt_sequence to remote target. */ |
3682 | static void | |
eeae04df | 3683 | send_interrupt_sequence (void) |
9a7071a8 | 3684 | { |
5d93a237 TT |
3685 | struct remote_state *rs = get_remote_state (); |
3686 | ||
9a7071a8 | 3687 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3688 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3689 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3690 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3691 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3692 | { | |
5d93a237 | 3693 | serial_send_break (rs->remote_desc); |
c33e31fd | 3694 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3695 | } |
3696 | else | |
3697 | internal_error (__FILE__, __LINE__, | |
3698 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3699 | interrupt_sequence_mode); | |
3700 | } | |
3701 | ||
3405876a PA |
3702 | |
3703 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3704 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3705 | ||
3706 | static ptid_t | |
3707 | stop_reply_extract_thread (char *stop_reply) | |
3708 | { | |
3709 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3710 | { | |
256642e8 | 3711 | const char *p; |
3405876a PA |
3712 | |
3713 | /* Txx r:val ; r:val (...) */ | |
3714 | p = &stop_reply[3]; | |
3715 | ||
3716 | /* Look for "register" named "thread". */ | |
3717 | while (*p != '\0') | |
3718 | { | |
256642e8 | 3719 | const char *p1; |
3405876a PA |
3720 | |
3721 | p1 = strchr (p, ':'); | |
3722 | if (p1 == NULL) | |
3723 | return null_ptid; | |
3724 | ||
3725 | if (strncmp (p, "thread", p1 - p) == 0) | |
3726 | return read_ptid (++p1, &p); | |
3727 | ||
3728 | p1 = strchr (p, ';'); | |
3729 | if (p1 == NULL) | |
3730 | return null_ptid; | |
3731 | p1++; | |
3732 | ||
3733 | p = p1; | |
3734 | } | |
3735 | } | |
3736 | ||
3737 | return null_ptid; | |
3738 | } | |
3739 | ||
b7ea362b PA |
3740 | /* Determine the remote side's current thread. If we have a stop |
3741 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3742 | "thread" register we can extract the current thread from. If not, | |
3743 | ask the remote which is the current thread with qC. The former | |
3744 | method avoids a roundtrip. */ | |
3745 | ||
3746 | static ptid_t | |
3747 | get_current_thread (char *wait_status) | |
3748 | { | |
6a49a997 | 3749 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3750 | |
3751 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3752 | the target architecture, which we haven't yet fully determined at | |
3753 | this point. */ | |
3754 | if (wait_status != NULL) | |
3755 | ptid = stop_reply_extract_thread (wait_status); | |
3756 | if (ptid_equal (ptid, null_ptid)) | |
3757 | ptid = remote_current_thread (inferior_ptid); | |
3758 | ||
3759 | return ptid; | |
3760 | } | |
3761 | ||
49c62f2e PA |
3762 | /* Query the remote target for which is the current thread/process, |
3763 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3764 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3765 | to return the current thread. |
3766 | ||
3767 | This function is called after handling the '?' or 'vRun' packets, | |
3768 | whose response is a stop reply from which we can also try | |
3769 | extracting the thread. If the target doesn't support the explicit | |
3770 | qC query, we infer the current thread from that stop reply, passed | |
3771 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3772 | |
3773 | static void | |
3405876a | 3774 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3775 | { |
3776 | struct remote_state *rs = get_remote_state (); | |
3777 | int fake_pid_p = 0; | |
49c62f2e PA |
3778 | |
3779 | inferior_ptid = null_ptid; | |
3780 | ||
b7ea362b | 3781 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 3782 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 3783 | |
87215ad1 | 3784 | if (curr_ptid != null_ptid) |
49c62f2e PA |
3785 | { |
3786 | if (!remote_multi_process_p (rs)) | |
3787 | fake_pid_p = 1; | |
49c62f2e PA |
3788 | } |
3789 | else | |
3790 | { | |
3791 | /* Without this, some commands which require an active target | |
3792 | (such as kill) won't work. This variable serves (at least) | |
3793 | double duty as both the pid of the target process (if it has | |
3794 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 3795 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
3796 | fake_pid_p = 1; |
3797 | } | |
3798 | ||
87215ad1 | 3799 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 3800 | |
87215ad1 SDJ |
3801 | /* Add the main thread and switch to it. Don't try reading |
3802 | registers yet, since we haven't fetched the target description | |
3803 | yet. */ | |
3804 | thread_info *tp = add_thread_silent (curr_ptid); | |
3805 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
3806 | } |
3807 | ||
6efcd9a8 PA |
3808 | /* Print info about a thread that was found already stopped on |
3809 | connection. */ | |
3810 | ||
3811 | static void | |
3812 | print_one_stopped_thread (struct thread_info *thread) | |
3813 | { | |
3814 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3815 | ||
3816 | switch_to_thread (thread->ptid); | |
3817 | stop_pc = get_frame_pc (get_current_frame ()); | |
3818 | set_current_sal_from_frame (get_current_frame ()); | |
3819 | ||
3820 | thread->suspend.waitstatus_pending_p = 0; | |
3821 | ||
3822 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3823 | { | |
3824 | enum gdb_signal sig = ws->value.sig; | |
3825 | ||
3826 | if (signal_print_state (sig)) | |
3827 | observer_notify_signal_received (sig); | |
3828 | } | |
3829 | observer_notify_normal_stop (NULL, 1); | |
3830 | } | |
3831 | ||
221e1a37 PA |
3832 | /* Process all initial stop replies the remote side sent in response |
3833 | to the ? packet. These indicate threads that were already stopped | |
3834 | on initial connection. We mark these threads as stopped and print | |
3835 | their current frame before giving the user the prompt. */ | |
3836 | ||
3837 | static void | |
6efcd9a8 | 3838 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3839 | { |
3840 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3841 | struct inferior *inf; |
3842 | struct thread_info *thread; | |
3843 | struct thread_info *selected = NULL; | |
3844 | struct thread_info *lowest_stopped = NULL; | |
3845 | struct thread_info *first = NULL; | |
221e1a37 PA |
3846 | |
3847 | /* Consume the initial pending events. */ | |
3848 | while (pending_stop_replies-- > 0) | |
3849 | { | |
3850 | ptid_t waiton_ptid = minus_one_ptid; | |
3851 | ptid_t event_ptid; | |
3852 | struct target_waitstatus ws; | |
3853 | int ignore_event = 0; | |
6efcd9a8 | 3854 | struct thread_info *thread; |
221e1a37 PA |
3855 | |
3856 | memset (&ws, 0, sizeof (ws)); | |
3857 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3858 | if (remote_debug) | |
3859 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3860 | ||
3861 | switch (ws.kind) | |
3862 | { | |
3863 | case TARGET_WAITKIND_IGNORE: | |
3864 | case TARGET_WAITKIND_NO_RESUMED: | |
3865 | case TARGET_WAITKIND_SIGNALLED: | |
3866 | case TARGET_WAITKIND_EXITED: | |
3867 | /* We shouldn't see these, but if we do, just ignore. */ | |
3868 | if (remote_debug) | |
3869 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3870 | ignore_event = 1; | |
3871 | break; | |
3872 | ||
3873 | case TARGET_WAITKIND_EXECD: | |
3874 | xfree (ws.value.execd_pathname); | |
3875 | break; | |
3876 | default: | |
3877 | break; | |
3878 | } | |
3879 | ||
3880 | if (ignore_event) | |
3881 | continue; | |
3882 | ||
6efcd9a8 | 3883 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3884 | |
3885 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3886 | { | |
3887 | enum gdb_signal sig = ws.value.sig; | |
3888 | ||
3889 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3890 | instead of signal 0. Suppress it. */ | |
3891 | if (sig == GDB_SIGNAL_TRAP) | |
3892 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3893 | thread->suspend.stop_signal = sig; |
3894 | ws.value.sig = sig; | |
3895 | } | |
221e1a37 | 3896 | |
6efcd9a8 PA |
3897 | thread->suspend.waitstatus = ws; |
3898 | ||
3899 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3900 | || ws.value.sig != GDB_SIGNAL_0) | |
3901 | thread->suspend.waitstatus_pending_p = 1; | |
3902 | ||
3903 | set_executing (event_ptid, 0); | |
3904 | set_running (event_ptid, 0); | |
7aabaf9d | 3905 | get_remote_thread_info (thread)->vcont_resumed = 0; |
6efcd9a8 PA |
3906 | } |
3907 | ||
3908 | /* "Notice" the new inferiors before anything related to | |
3909 | registers/memory. */ | |
3910 | ALL_INFERIORS (inf) | |
3911 | { | |
3912 | if (inf->pid == 0) | |
3913 | continue; | |
3914 | ||
3915 | inf->needs_setup = 1; | |
3916 | ||
3917 | if (non_stop) | |
3918 | { | |
3919 | thread = any_live_thread_of_process (inf->pid); | |
3920 | notice_new_inferior (thread->ptid, | |
3921 | thread->state == THREAD_RUNNING, | |
3922 | from_tty); | |
3923 | } | |
3924 | } | |
3925 | ||
3926 | /* If all-stop on top of non-stop, pause all threads. Note this | |
3927 | records the threads' stop pc, so must be done after "noticing" | |
3928 | the inferiors. */ | |
3929 | if (!non_stop) | |
3930 | { | |
3931 | stop_all_threads (); | |
3932 | ||
3933 | /* If all threads of an inferior were already stopped, we | |
3934 | haven't setup the inferior yet. */ | |
3935 | ALL_INFERIORS (inf) | |
3936 | { | |
3937 | if (inf->pid == 0) | |
3938 | continue; | |
221e1a37 | 3939 | |
6efcd9a8 PA |
3940 | if (inf->needs_setup) |
3941 | { | |
3942 | thread = any_live_thread_of_process (inf->pid); | |
3943 | switch_to_thread_no_regs (thread); | |
3944 | setup_inferior (0); | |
3945 | } | |
3946 | } | |
221e1a37 | 3947 | } |
6efcd9a8 PA |
3948 | |
3949 | /* Now go over all threads that are stopped, and print their current | |
3950 | frame. If all-stop, then if there's a signalled thread, pick | |
3951 | that as current. */ | |
3952 | ALL_NON_EXITED_THREADS (thread) | |
3953 | { | |
6efcd9a8 PA |
3954 | if (first == NULL) |
3955 | first = thread; | |
3956 | ||
3957 | if (!non_stop) | |
3958 | set_running (thread->ptid, 0); | |
3959 | else if (thread->state != THREAD_STOPPED) | |
3960 | continue; | |
3961 | ||
6efcd9a8 PA |
3962 | if (selected == NULL |
3963 | && thread->suspend.waitstatus_pending_p) | |
3964 | selected = thread; | |
3965 | ||
5d5658a1 PA |
3966 | if (lowest_stopped == NULL |
3967 | || thread->inf->num < lowest_stopped->inf->num | |
3968 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
3969 | lowest_stopped = thread; |
3970 | ||
3971 | if (non_stop) | |
3972 | print_one_stopped_thread (thread); | |
3973 | } | |
3974 | ||
3975 | /* In all-stop, we only print the status of one thread, and leave | |
3976 | others with their status pending. */ | |
3977 | if (!non_stop) | |
3978 | { | |
3979 | thread = selected; | |
3980 | if (thread == NULL) | |
3981 | thread = lowest_stopped; | |
3982 | if (thread == NULL) | |
3983 | thread = first; | |
3984 | ||
3985 | print_one_stopped_thread (thread); | |
3986 | } | |
3987 | ||
3988 | /* For "info program". */ | |
3989 | thread = inferior_thread (); | |
3990 | if (thread->state == THREAD_STOPPED) | |
3991 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
3992 | } |
3993 | ||
048094ac PA |
3994 | /* Start the remote connection and sync state. */ |
3995 | ||
9cbc821d | 3996 | static void |
04bd08de | 3997 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3998 | { |
c8d104ad PA |
3999 | struct remote_state *rs = get_remote_state (); |
4000 | struct packet_config *noack_config; | |
2d717e4f | 4001 | char *wait_status = NULL; |
8621d6a9 | 4002 | |
048094ac PA |
4003 | /* Signal other parts that we're going through the initial setup, |
4004 | and so things may not be stable yet. E.g., we don't try to | |
4005 | install tracepoints until we've relocated symbols. Also, a | |
4006 | Ctrl-C before we're connected and synced up can't interrupt the | |
4007 | target. Instead, it offers to drop the (potentially wedged) | |
4008 | connection. */ | |
4009 | rs->starting_up = 1; | |
4010 | ||
522002f9 | 4011 | QUIT; |
c906108c | 4012 | |
9a7071a8 JB |
4013 | if (interrupt_on_connect) |
4014 | send_interrupt_sequence (); | |
4015 | ||
57e12211 | 4016 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4017 | remote_serial_write ("+", 1); |
1e51243a | 4018 | |
c8d104ad PA |
4019 | /* The first packet we send to the target is the optional "supported |
4020 | packets" request. If the target can answer this, it will tell us | |
4021 | which later probes to skip. */ | |
4022 | remote_query_supported (); | |
4023 | ||
d914c394 | 4024 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4025 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4026 | remote_set_permissions (target); |
d914c394 | 4027 | |
57809e5e JK |
4028 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4029 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4030 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4031 | invalid reply and GDB would return error in | |
4032 | remote_hostio_set_filesystem, making remote files access impossible. | |
4033 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4034 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4035 | { | |
4036 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4037 | ||
4038 | putpkt (v_mustreplyempty); | |
4039 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4040 | if (strcmp (rs->buf, "OK") == 0) | |
4041 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4042 | else if (strcmp (rs->buf, "") != 0) | |
4043 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4044 | rs->buf); | |
4045 | } | |
4046 | ||
c8d104ad PA |
4047 | /* Next, we possibly activate noack mode. |
4048 | ||
4049 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4050 | enable noack mode if the stub reported a wish for it with | |
4051 | qSupported. | |
4052 | ||
4053 | If set to TRUE, then enable noack mode even if the stub didn't | |
4054 | report it in qSupported. If the stub doesn't reply OK, the | |
4055 | session ends with an error. | |
4056 | ||
4057 | If FALSE, then don't activate noack mode, regardless of what the | |
4058 | stub claimed should be the default with qSupported. */ | |
4059 | ||
4060 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4061 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4062 | { |
4063 | putpkt ("QStartNoAckMode"); | |
4064 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4065 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4066 | rs->noack_mode = 1; | |
4067 | } | |
4068 | ||
04bd08de | 4069 | if (extended_p) |
5fe04517 PA |
4070 | { |
4071 | /* Tell the remote that we are using the extended protocol. */ | |
4072 | putpkt ("!"); | |
4073 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4074 | } | |
4075 | ||
9b224c5e PA |
4076 | /* Let the target know which signals it is allowed to pass down to |
4077 | the program. */ | |
4078 | update_signals_program_target (); | |
4079 | ||
d962ef82 DJ |
4080 | /* Next, if the target can specify a description, read it. We do |
4081 | this before anything involving memory or registers. */ | |
4082 | target_find_description (); | |
4083 | ||
6c95b8df PA |
4084 | /* Next, now that we know something about the target, update the |
4085 | address spaces in the program spaces. */ | |
4086 | update_address_spaces (); | |
4087 | ||
50c71eaf PA |
4088 | /* On OSs where the list of libraries is global to all |
4089 | processes, we fetch them early. */ | |
f5656ead | 4090 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4091 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4092 | |
6efcd9a8 | 4093 | if (target_is_non_stop_p ()) |
74531fed | 4094 | { |
4082afcc | 4095 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4096 | error (_("Non-stop mode requested, but remote " |
4097 | "does not support non-stop")); | |
74531fed PA |
4098 | |
4099 | putpkt ("QNonStop:1"); | |
4100 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4101 | ||
4102 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4103 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4104 | |
4105 | /* Find about threads and processes the stub is already | |
4106 | controlling. We default to adding them in the running state. | |
4107 | The '?' query below will then tell us about which threads are | |
4108 | stopped. */ | |
e8032dde | 4109 | remote_update_thread_list (target); |
74531fed | 4110 | } |
4082afcc | 4111 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4112 | { |
4113 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4114 | Request it explicitly. */ |
74531fed PA |
4115 | putpkt ("QNonStop:0"); |
4116 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4117 | ||
4118 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4119 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4120 | } |
4121 | ||
a0743c90 YQ |
4122 | /* Upload TSVs regardless of whether the target is running or not. The |
4123 | remote stub, such as GDBserver, may have some predefined or builtin | |
4124 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4125 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4126 | { |
4127 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4128 | ||
181e3713 | 4129 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4130 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4131 | } | |
4132 | ||
2d717e4f DJ |
4133 | /* Check whether the target is running now. */ |
4134 | putpkt ("?"); | |
4135 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4136 | ||
6efcd9a8 | 4137 | if (!target_is_non_stop_p ()) |
2d717e4f | 4138 | { |
74531fed | 4139 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4140 | { |
04bd08de | 4141 | if (!extended_p) |
74531fed | 4142 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4143 | |
4144 | /* We're connected, but not running. Drop out before we | |
4145 | call start_remote. */ | |
e278ad5b | 4146 | rs->starting_up = 0; |
c35b1492 | 4147 | return; |
2d717e4f DJ |
4148 | } |
4149 | else | |
74531fed | 4150 | { |
74531fed | 4151 | /* Save the reply for later. */ |
224c3ddb | 4152 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4153 | strcpy (wait_status, rs->buf); |
4154 | } | |
4155 | ||
b7ea362b | 4156 | /* Fetch thread list. */ |
e8032dde | 4157 | target_update_thread_list (); |
b7ea362b | 4158 | |
74531fed PA |
4159 | /* Let the stub know that we want it to return the thread. */ |
4160 | set_continue_thread (minus_one_ptid); | |
4161 | ||
b7ea362b PA |
4162 | if (thread_count () == 0) |
4163 | { | |
4164 | /* Target has no concept of threads at all. GDB treats | |
4165 | non-threaded target as single-threaded; add a main | |
4166 | thread. */ | |
4167 | add_current_inferior_and_thread (wait_status); | |
4168 | } | |
4169 | else | |
4170 | { | |
4171 | /* We have thread information; select the thread the target | |
4172 | says should be current. If we're reconnecting to a | |
4173 | multi-threaded program, this will ideally be the thread | |
4174 | that last reported an event before GDB disconnected. */ | |
4175 | inferior_ptid = get_current_thread (wait_status); | |
4176 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4177 | { | |
4178 | /* Odd... The target was able to list threads, but not | |
4179 | tell us which thread was current (no "thread" | |
4180 | register in T stop reply?). Just pick the first | |
4181 | thread in the thread list then. */ | |
c9f35b34 KB |
4182 | |
4183 | if (remote_debug) | |
4184 | fprintf_unfiltered (gdb_stdlog, | |
4185 | "warning: couldn't determine remote " | |
4186 | "current thread; picking first in list.\n"); | |
4187 | ||
b7ea362b PA |
4188 | inferior_ptid = thread_list->ptid; |
4189 | } | |
4190 | } | |
74531fed | 4191 | |
6e586cc5 YQ |
4192 | /* init_wait_for_inferior should be called before get_offsets in order |
4193 | to manage `inserted' flag in bp loc in a correct state. | |
4194 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4195 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4196 | start_remote, set `inserted' flag to 1. In the initialization of | |
4197 | inferior, breakpoint_init_inferior should be called first, and then | |
4198 | breakpoint_re_set can be called. If this order is broken, state of | |
4199 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4200 | manipulation. */ | |
4201 | init_wait_for_inferior (); | |
4202 | ||
74531fed PA |
4203 | get_offsets (); /* Get text, data & bss offsets. */ |
4204 | ||
d962ef82 DJ |
4205 | /* If we could not find a description using qXfer, and we know |
4206 | how to do it some other way, try again. This is not | |
4207 | supported for non-stop; it could be, but it is tricky if | |
4208 | there are no stopped threads when we connect. */ | |
04bd08de | 4209 | if (remote_read_description_p (target) |
f5656ead | 4210 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4211 | { |
4212 | target_clear_description (); | |
4213 | target_find_description (); | |
4214 | } | |
4215 | ||
74531fed PA |
4216 | /* Use the previously fetched status. */ |
4217 | gdb_assert (wait_status != NULL); | |
4218 | strcpy (rs->buf, wait_status); | |
4219 | rs->cached_wait_status = 1; | |
4220 | ||
04bd08de | 4221 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4222 | } |
4223 | else | |
4224 | { | |
68c97600 PA |
4225 | /* Clear WFI global state. Do this before finding about new |
4226 | threads and inferiors, and setting the current inferior. | |
4227 | Otherwise we would clear the proceed status of the current | |
4228 | inferior when we want its stop_soon state to be preserved | |
4229 | (see notice_new_inferior). */ | |
4230 | init_wait_for_inferior (); | |
4231 | ||
74531fed PA |
4232 | /* In non-stop, we will either get an "OK", meaning that there |
4233 | are no stopped threads at this time; or, a regular stop | |
4234 | reply. In the latter case, there may be more than one thread | |
4235 | stopped --- we pull them all out using the vStopped | |
4236 | mechanism. */ | |
4237 | if (strcmp (rs->buf, "OK") != 0) | |
4238 | { | |
722247f1 | 4239 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4240 | |
722247f1 YQ |
4241 | /* remote_notif_get_pending_replies acks this one, and gets |
4242 | the rest out. */ | |
f48ff2a7 | 4243 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4244 | = remote_notif_parse (notif, rs->buf); |
4245 | remote_notif_get_pending_events (notif); | |
74531fed | 4246 | } |
2d717e4f | 4247 | |
74531fed PA |
4248 | if (thread_count () == 0) |
4249 | { | |
04bd08de | 4250 | if (!extended_p) |
74531fed | 4251 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4252 | |
c35b1492 PA |
4253 | /* We're connected, but not running. Drop out before we |
4254 | call start_remote. */ | |
e278ad5b | 4255 | rs->starting_up = 0; |
c35b1492 PA |
4256 | return; |
4257 | } | |
74531fed | 4258 | |
74531fed PA |
4259 | /* In non-stop mode, any cached wait status will be stored in |
4260 | the stop reply queue. */ | |
4261 | gdb_assert (wait_status == NULL); | |
f0223081 | 4262 | |
2455069d | 4263 | /* Report all signals during attach/startup. */ |
94bedb42 | 4264 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4265 | |
4266 | /* If there are already stopped threads, mark them stopped and | |
4267 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4268 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4269 | |
4270 | if (target_can_async_p ()) | |
4271 | target_async (1); | |
74531fed | 4272 | } |
c8d104ad | 4273 | |
c8d104ad PA |
4274 | /* If we connected to a live target, do some additional setup. */ |
4275 | if (target_has_execution) | |
4276 | { | |
f4ccffad | 4277 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4278 | remote_check_symbols (); |
c8d104ad | 4279 | } |
50c71eaf | 4280 | |
d5551862 SS |
4281 | /* Possibly the target has been engaged in a trace run started |
4282 | previously; find out where things are at. */ | |
8bd200f1 | 4283 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4284 | { |
00bf0b85 | 4285 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4286 | |
00bf0b85 SS |
4287 | if (current_trace_status ()->running) |
4288 | printf_filtered (_("Trace is already running on the target.\n")); | |
4289 | ||
ab6617cc | 4290 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4291 | |
4292 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4293 | } |
4294 | ||
c0272db5 TW |
4295 | /* Possibly the target has been engaged in a btrace record started |
4296 | previously; find out where things are at. */ | |
4297 | remote_btrace_maybe_reopen (); | |
4298 | ||
1e51243a PA |
4299 | /* The thread and inferior lists are now synchronized with the |
4300 | target, our symbols have been relocated, and we're merged the | |
4301 | target's tracepoints with ours. We're done with basic start | |
4302 | up. */ | |
4303 | rs->starting_up = 0; | |
4304 | ||
a25a5a45 PA |
4305 | /* Maybe breakpoints are global and need to be inserted now. */ |
4306 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4307 | insert_breakpoints (); |
c906108c SS |
4308 | } |
4309 | ||
4310 | /* Open a connection to a remote debugger. | |
4311 | NAME is the filename used for communication. */ | |
4312 | ||
4313 | static void | |
014f9477 | 4314 | remote_open (const char *name, int from_tty) |
c906108c | 4315 | { |
75c99385 | 4316 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4317 | } |
4318 | ||
c906108c SS |
4319 | /* Open a connection to a remote debugger using the extended |
4320 | remote gdb protocol. NAME is the filename used for communication. */ | |
4321 | ||
4322 | static void | |
014f9477 | 4323 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4324 | { |
75c99385 | 4325 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4326 | } |
4327 | ||
ca4f7f8b PA |
4328 | /* Reset all packets back to "unknown support". Called when opening a |
4329 | new connection to a remote target. */ | |
c906108c | 4330 | |
d471ea57 | 4331 | static void |
ca4f7f8b | 4332 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4333 | { |
4334 | int i; | |
a744cf53 | 4335 | |
444abaca | 4336 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4337 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4338 | } |
4339 | ||
ca4f7f8b PA |
4340 | /* Initialize all packet configs. */ |
4341 | ||
4342 | static void | |
4343 | init_all_packet_configs (void) | |
4344 | { | |
4345 | int i; | |
4346 | ||
4347 | for (i = 0; i < PACKET_MAX; i++) | |
4348 | { | |
4349 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4350 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4351 | } | |
4352 | } | |
4353 | ||
23860348 | 4354 | /* Symbol look-up. */ |
dc8acb97 MS |
4355 | |
4356 | static void | |
36d25514 | 4357 | remote_check_symbols (void) |
dc8acb97 MS |
4358 | { |
4359 | char *msg, *reply, *tmp; | |
dc8acb97 | 4360 | int end; |
28170b88 | 4361 | long reply_size; |
a5c0808e | 4362 | struct cleanup *old_chain; |
dc8acb97 | 4363 | |
63154eca PA |
4364 | /* The remote side has no concept of inferiors that aren't running |
4365 | yet, it only knows about running processes. If we're connected | |
4366 | but our current inferior is not running, we should not invite the | |
4367 | remote target to request symbol lookups related to its | |
4368 | (unrelated) current process. */ | |
4369 | if (!target_has_execution) | |
4370 | return; | |
4371 | ||
4082afcc | 4372 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4373 | return; |
4374 | ||
63154eca PA |
4375 | /* Make sure the remote is pointing at the right process. Note |
4376 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4377 | set_general_process (); |
4378 | ||
6d820c5c DJ |
4379 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4380 | because we need both at the same time. */ | |
224c3ddb | 4381 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4382 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4383 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4384 | make_cleanup (free_current_contents, &reply); | |
4385 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4386 | |
23860348 | 4387 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4388 | |
4389 | putpkt ("qSymbol::"); | |
28170b88 MK |
4390 | getpkt (&reply, &reply_size, 0); |
4391 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4392 | |
61012eef | 4393 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4394 | { |
77e371c0 TT |
4395 | struct bound_minimal_symbol sym; |
4396 | ||
dc8acb97 | 4397 | tmp = &reply[8]; |
cfd77fa1 | 4398 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4399 | msg[end] = '\0'; |
4400 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4401 | if (sym.minsym == NULL) |
ea9c271d | 4402 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4403 | else |
2bbe3cc1 | 4404 | { |
f5656ead | 4405 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4406 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4407 | |
4408 | /* If this is a function address, return the start of code | |
4409 | instead of any data function descriptor. */ | |
f5656ead | 4410 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4411 | sym_addr, |
4412 | ¤t_target); | |
4413 | ||
4414 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4415 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4416 | } |
4417 | ||
dc8acb97 | 4418 | putpkt (msg); |
28170b88 | 4419 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4420 | } |
a5c0808e PA |
4421 | |
4422 | do_cleanups (old_chain); | |
dc8acb97 MS |
4423 | } |
4424 | ||
9db8d71f | 4425 | static struct serial * |
baa336ce | 4426 | remote_serial_open (const char *name) |
9db8d71f DJ |
4427 | { |
4428 | static int udp_warning = 0; | |
4429 | ||
4430 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4431 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4432 | serial connection is reliable and not the serial connection promising | |
4433 | to be. */ | |
61012eef | 4434 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4435 | { |
3e43a32a MS |
4436 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4437 | "Some events may be lost, rendering further debugging " | |
4438 | "impossible.")); | |
9db8d71f DJ |
4439 | udp_warning = 1; |
4440 | } | |
4441 | ||
4442 | return serial_open (name); | |
4443 | } | |
4444 | ||
d914c394 SS |
4445 | /* Inform the target of our permission settings. The permission flags |
4446 | work without this, but if the target knows the settings, it can do | |
4447 | a couple things. First, it can add its own check, to catch cases | |
4448 | that somehow manage to get by the permissions checks in target | |
4449 | methods. Second, if the target is wired to disallow particular | |
4450 | settings (for instance, a system in the field that is not set up to | |
4451 | be able to stop at a breakpoint), it can object to any unavailable | |
4452 | permissions. */ | |
4453 | ||
4454 | void | |
c378d69d | 4455 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4456 | { |
4457 | struct remote_state *rs = get_remote_state (); | |
4458 | ||
bba74b36 YQ |
4459 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4460 | "WriteReg:%x;WriteMem:%x;" | |
4461 | "InsertBreak:%x;InsertTrace:%x;" | |
4462 | "InsertFastTrace:%x;Stop:%x", | |
4463 | may_write_registers, may_write_memory, | |
4464 | may_insert_breakpoints, may_insert_tracepoints, | |
4465 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4466 | putpkt (rs->buf); |
4467 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4468 | ||
4469 | /* If the target didn't like the packet, warn the user. Do not try | |
4470 | to undo the user's settings, that would just be maddening. */ | |
4471 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4472 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4473 | } |
4474 | ||
be2a5f71 DJ |
4475 | /* This type describes each known response to the qSupported |
4476 | packet. */ | |
4477 | struct protocol_feature | |
4478 | { | |
4479 | /* The name of this protocol feature. */ | |
4480 | const char *name; | |
4481 | ||
4482 | /* The default for this protocol feature. */ | |
4483 | enum packet_support default_support; | |
4484 | ||
4485 | /* The function to call when this feature is reported, or after | |
4486 | qSupported processing if the feature is not supported. | |
4487 | The first argument points to this structure. The second | |
4488 | argument indicates whether the packet requested support be | |
4489 | enabled, disabled, or probed (or the default, if this function | |
4490 | is being called at the end of processing and this feature was | |
4491 | not reported). The third argument may be NULL; if not NULL, it | |
4492 | is a NUL-terminated string taken from the packet following | |
4493 | this feature's name and an equals sign. */ | |
4494 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4495 | const char *); | |
4496 | ||
4497 | /* The corresponding packet for this feature. Only used if | |
4498 | FUNC is remote_supported_packet. */ | |
4499 | int packet; | |
4500 | }; | |
4501 | ||
be2a5f71 DJ |
4502 | static void |
4503 | remote_supported_packet (const struct protocol_feature *feature, | |
4504 | enum packet_support support, | |
4505 | const char *argument) | |
4506 | { | |
4507 | if (argument) | |
4508 | { | |
4509 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4510 | " \"%s\"."), feature->name); | |
4511 | return; | |
4512 | } | |
4513 | ||
4082afcc | 4514 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4515 | } |
be2a5f71 DJ |
4516 | |
4517 | static void | |
4518 | remote_packet_size (const struct protocol_feature *feature, | |
4519 | enum packet_support support, const char *value) | |
4520 | { | |
4521 | struct remote_state *rs = get_remote_state (); | |
4522 | ||
4523 | int packet_size; | |
4524 | char *value_end; | |
4525 | ||
4526 | if (support != PACKET_ENABLE) | |
4527 | return; | |
4528 | ||
4529 | if (value == NULL || *value == '\0') | |
4530 | { | |
4531 | warning (_("Remote target reported \"%s\" without a size."), | |
4532 | feature->name); | |
4533 | return; | |
4534 | } | |
4535 | ||
4536 | errno = 0; | |
4537 | packet_size = strtol (value, &value_end, 16); | |
4538 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4539 | { | |
4540 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4541 | feature->name, value); | |
4542 | return; | |
4543 | } | |
4544 | ||
be2a5f71 DJ |
4545 | /* Record the new maximum packet size. */ |
4546 | rs->explicit_packet_size = packet_size; | |
4547 | } | |
4548 | ||
dc473cfb | 4549 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4550 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4551 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4552 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4553 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4554 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4555 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4556 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4557 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4558 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4559 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4560 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4561 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4562 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4563 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4564 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4565 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4566 | PACKET_qXfer_spu_read }, | |
4567 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4568 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4569 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4570 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4571 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4572 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4573 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4574 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4575 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4576 | PACKET_QPassSignals }, | |
82075af2 JS |
4577 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4578 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4579 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4580 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
4581 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
4582 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
4583 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4584 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
4585 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
4586 | PACKET_QEnvironmentHexEncoded }, | |
4587 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
4588 | PACKET_QEnvironmentReset }, | |
4589 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
4590 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
4591 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4592 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4593 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4594 | PACKET_multiprocess_feature }, | |
4595 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4596 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4597 | PACKET_qXfer_siginfo_read }, | |
4598 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4599 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4600 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4601 | PACKET_ConditionalTracepoints }, |
4082afcc | 4602 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4603 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4604 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4605 | PACKET_BreakpointCommands }, |
4082afcc | 4606 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4607 | PACKET_FastTracepoints }, |
4082afcc | 4608 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4609 | PACKET_StaticTracepoints }, |
4082afcc | 4610 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4611 | PACKET_InstallInTrace}, |
4082afcc PA |
4612 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4613 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4614 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4615 | PACKET_bc }, | |
4616 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4617 | PACKET_bs }, | |
409873ef SS |
4618 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4619 | PACKET_TracepointSource }, | |
d914c394 SS |
4620 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4621 | PACKET_QAllow }, | |
4082afcc PA |
4622 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4623 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4624 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4625 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4626 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4627 | PACKET_qXfer_uib }, | |
03583c20 UW |
4628 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4629 | PACKET_QDisableRandomization }, | |
d1feda86 | 4630 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4631 | { "QTBuffer:size", PACKET_DISABLE, |
4632 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4633 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4634 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4635 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4636 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4637 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4638 | PACKET_qXfer_btrace }, |
4639 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4640 | PACKET_qXfer_btrace_conf }, |
4641 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4642 | PACKET_Qbtrace_conf_bts_size }, |
4643 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4644 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4645 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4646 | PACKET_fork_event_feature }, | |
4647 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4648 | PACKET_vfork_event_feature }, | |
94585166 DB |
4649 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4650 | PACKET_exec_event_feature }, | |
b20a6524 | 4651 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4652 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4653 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4654 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4655 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4656 | }; |
4657 | ||
c8d5aac9 L |
4658 | static char *remote_support_xml; |
4659 | ||
4660 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4661 | ||
4662 | void | |
6e39997a | 4663 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4664 | { |
4665 | #if defined(HAVE_LIBEXPAT) | |
4666 | if (remote_support_xml == NULL) | |
c4f7c687 | 4667 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4668 | else |
4669 | { | |
4670 | char *copy = xstrdup (remote_support_xml + 13); | |
4671 | char *p = strtok (copy, ","); | |
4672 | ||
4673 | do | |
4674 | { | |
4675 | if (strcmp (p, xml) == 0) | |
4676 | { | |
4677 | /* already there */ | |
4678 | xfree (copy); | |
4679 | return; | |
4680 | } | |
4681 | } | |
4682 | while ((p = strtok (NULL, ",")) != NULL); | |
4683 | xfree (copy); | |
4684 | ||
94b0dee1 PA |
4685 | remote_support_xml = reconcat (remote_support_xml, |
4686 | remote_support_xml, ",", xml, | |
4687 | (char *) NULL); | |
c8d5aac9 L |
4688 | } |
4689 | #endif | |
4690 | } | |
4691 | ||
4692 | static char * | |
4693 | remote_query_supported_append (char *msg, const char *append) | |
4694 | { | |
4695 | if (msg) | |
94b0dee1 | 4696 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4697 | else |
4698 | return xstrdup (append); | |
4699 | } | |
4700 | ||
be2a5f71 DJ |
4701 | static void |
4702 | remote_query_supported (void) | |
4703 | { | |
4704 | struct remote_state *rs = get_remote_state (); | |
4705 | char *next; | |
4706 | int i; | |
4707 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4708 | ||
4709 | /* The packet support flags are handled differently for this packet | |
4710 | than for most others. We treat an error, a disabled packet, and | |
4711 | an empty response identically: any features which must be reported | |
4712 | to be used will be automatically disabled. An empty buffer | |
4713 | accomplishes this, since that is also the representation for a list | |
4714 | containing no features. */ | |
4715 | ||
4716 | rs->buf[0] = 0; | |
4082afcc | 4717 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4718 | { |
c8d5aac9 | 4719 | char *q = NULL; |
94b0dee1 | 4720 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4721 | |
73b8c1fd PA |
4722 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4723 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4724 | |
f7e6eed5 PA |
4725 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4726 | q = remote_query_supported_append (q, "swbreak+"); | |
4727 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4728 | q = remote_query_supported_append (q, "hwbreak+"); | |
4729 | ||
dde08ee1 PA |
4730 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4731 | ||
8020350c DB |
4732 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4733 | != AUTO_BOOLEAN_FALSE) | |
4734 | q = remote_query_supported_append (q, "fork-events+"); | |
4735 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4736 | != AUTO_BOOLEAN_FALSE) | |
4737 | q = remote_query_supported_append (q, "vfork-events+"); | |
4738 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4739 | != AUTO_BOOLEAN_FALSE) | |
4740 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4741 | |
750ce8d1 YQ |
4742 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4743 | q = remote_query_supported_append (q, "vContSupported+"); | |
4744 | ||
65706a29 PA |
4745 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4746 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4747 | ||
f2faf941 PA |
4748 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4749 | q = remote_query_supported_append (q, "no-resumed+"); | |
4750 | ||
b35d5edb PA |
4751 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4752 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
4753 | if (remote_support_xml != NULL |
4754 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
b35d5edb PA |
4755 | q = remote_query_supported_append (q, remote_support_xml); |
4756 | ||
dde08ee1 PA |
4757 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4758 | putpkt (q); | |
82f73884 | 4759 | |
94b0dee1 PA |
4760 | do_cleanups (old_chain); |
4761 | ||
be2a5f71 DJ |
4762 | getpkt (&rs->buf, &rs->buf_size, 0); |
4763 | ||
4764 | /* If an error occured, warn, but do not return - just reset the | |
4765 | buffer to empty and go on to disable features. */ | |
4766 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4767 | == PACKET_ERROR) | |
4768 | { | |
4769 | warning (_("Remote failure reply: %s"), rs->buf); | |
4770 | rs->buf[0] = 0; | |
4771 | } | |
4772 | } | |
4773 | ||
4774 | memset (seen, 0, sizeof (seen)); | |
4775 | ||
4776 | next = rs->buf; | |
4777 | while (*next) | |
4778 | { | |
4779 | enum packet_support is_supported; | |
4780 | char *p, *end, *name_end, *value; | |
4781 | ||
4782 | /* First separate out this item from the rest of the packet. If | |
4783 | there's another item after this, we overwrite the separator | |
4784 | (terminated strings are much easier to work with). */ | |
4785 | p = next; | |
4786 | end = strchr (p, ';'); | |
4787 | if (end == NULL) | |
4788 | { | |
4789 | end = p + strlen (p); | |
4790 | next = end; | |
4791 | } | |
4792 | else | |
4793 | { | |
89be2091 DJ |
4794 | *end = '\0'; |
4795 | next = end + 1; | |
4796 | ||
be2a5f71 DJ |
4797 | if (end == p) |
4798 | { | |
4799 | warning (_("empty item in \"qSupported\" response")); | |
4800 | continue; | |
4801 | } | |
be2a5f71 DJ |
4802 | } |
4803 | ||
4804 | name_end = strchr (p, '='); | |
4805 | if (name_end) | |
4806 | { | |
4807 | /* This is a name=value entry. */ | |
4808 | is_supported = PACKET_ENABLE; | |
4809 | value = name_end + 1; | |
4810 | *name_end = '\0'; | |
4811 | } | |
4812 | else | |
4813 | { | |
4814 | value = NULL; | |
4815 | switch (end[-1]) | |
4816 | { | |
4817 | case '+': | |
4818 | is_supported = PACKET_ENABLE; | |
4819 | break; | |
4820 | ||
4821 | case '-': | |
4822 | is_supported = PACKET_DISABLE; | |
4823 | break; | |
4824 | ||
4825 | case '?': | |
4826 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4827 | break; | |
4828 | ||
4829 | default: | |
3e43a32a MS |
4830 | warning (_("unrecognized item \"%s\" " |
4831 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4832 | continue; |
4833 | } | |
4834 | end[-1] = '\0'; | |
4835 | } | |
4836 | ||
4837 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4838 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4839 | { | |
4840 | const struct protocol_feature *feature; | |
4841 | ||
4842 | seen[i] = 1; | |
4843 | feature = &remote_protocol_features[i]; | |
4844 | feature->func (feature, is_supported, value); | |
4845 | break; | |
4846 | } | |
4847 | } | |
4848 | ||
4849 | /* If we increased the packet size, make sure to increase the global | |
4850 | buffer size also. We delay this until after parsing the entire | |
4851 | qSupported packet, because this is the same buffer we were | |
4852 | parsing. */ | |
4853 | if (rs->buf_size < rs->explicit_packet_size) | |
4854 | { | |
4855 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4856 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4857 | } |
4858 | ||
4859 | /* Handle the defaults for unmentioned features. */ | |
4860 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4861 | if (!seen[i]) | |
4862 | { | |
4863 | const struct protocol_feature *feature; | |
4864 | ||
4865 | feature = &remote_protocol_features[i]; | |
4866 | feature->func (feature, feature->default_support, NULL); | |
4867 | } | |
4868 | } | |
4869 | ||
048094ac PA |
4870 | /* Serial QUIT handler for the remote serial descriptor. |
4871 | ||
4872 | Defers handling a Ctrl-C until we're done with the current | |
4873 | command/response packet sequence, unless: | |
4874 | ||
4875 | - We're setting up the connection. Don't send a remote interrupt | |
4876 | request, as we're not fully synced yet. Quit immediately | |
4877 | instead. | |
4878 | ||
4879 | - The target has been resumed in the foreground | |
223ffa71 | 4880 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
4881 | packet, and we're blocked waiting for the stop reply, thus a |
4882 | Ctrl-C should be immediately sent to the target. | |
4883 | ||
4884 | - We get a second Ctrl-C while still within the same serial read or | |
4885 | write. In that case the serial is seemingly wedged --- offer to | |
4886 | quit/disconnect. | |
4887 | ||
4888 | - We see a second Ctrl-C without target response, after having | |
4889 | previously interrupted the target. In that case the target/stub | |
4890 | is probably wedged --- offer to quit/disconnect. | |
4891 | */ | |
4892 | ||
4893 | static void | |
4894 | remote_serial_quit_handler (void) | |
4895 | { | |
4896 | struct remote_state *rs = get_remote_state (); | |
4897 | ||
4898 | if (check_quit_flag ()) | |
4899 | { | |
4900 | /* If we're starting up, we're not fully synced yet. Quit | |
4901 | immediately. */ | |
4902 | if (rs->starting_up) | |
4903 | quit (); | |
4904 | else if (rs->got_ctrlc_during_io) | |
4905 | { | |
4906 | if (query (_("The target is not responding to GDB commands.\n" | |
4907 | "Stop debugging it? "))) | |
4908 | remote_unpush_and_throw (); | |
4909 | } | |
4910 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 4911 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
4912 | interrupt_query (); |
4913 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
4914 | an interrupt request. */ | |
223ffa71 | 4915 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 4916 | target_interrupt (); |
048094ac PA |
4917 | else |
4918 | rs->got_ctrlc_during_io = 1; | |
4919 | } | |
4920 | } | |
4921 | ||
78a095c3 JK |
4922 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4923 | on it so remove them first. */ | |
4924 | ||
4925 | static void | |
4926 | remote_unpush_target (void) | |
4927 | { | |
915ef8b1 | 4928 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 4929 | } |
be2a5f71 | 4930 | |
048094ac PA |
4931 | static void |
4932 | remote_unpush_and_throw (void) | |
4933 | { | |
4934 | remote_unpush_target (); | |
4935 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
4936 | } | |
4937 | ||
c906108c | 4938 | static void |
014f9477 | 4939 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4940 | struct target_ops *target, int extended_p) |
c906108c | 4941 | { |
d01949b6 | 4942 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4943 | |
c906108c | 4944 | if (name == 0) |
8a3fe4f8 | 4945 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4946 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4947 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4948 | |
23860348 | 4949 | /* See FIXME above. */ |
c6ebd6cf | 4950 | if (!target_async_permitted) |
92d1e331 | 4951 | wait_forever_enabled_p = 1; |
6426a772 | 4952 | |
2d717e4f | 4953 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4954 | Ask this question first, before target_preopen has a chance to kill |
4955 | anything. */ | |
5d93a237 | 4956 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4957 | { |
78a095c3 JK |
4958 | if (from_tty |
4959 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4960 | error (_("Still connected.")); |
4961 | } | |
4962 | ||
78a095c3 | 4963 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4964 | target_preopen (from_tty); |
4965 | ||
89be2091 | 4966 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4967 | xfree (rs->last_pass_packet); |
4968 | rs->last_pass_packet = NULL; | |
89be2091 | 4969 | |
9b224c5e PA |
4970 | /* Make sure we send the program signals list the next time we |
4971 | resume. */ | |
5e4a05c4 TT |
4972 | xfree (rs->last_program_signals_packet); |
4973 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4974 | |
ad9a8f3f | 4975 | remote_fileio_reset (); |
1dd41f16 NS |
4976 | reopen_exec_file (); |
4977 | reread_symbols (); | |
4978 | ||
5d93a237 TT |
4979 | rs->remote_desc = remote_serial_open (name); |
4980 | if (!rs->remote_desc) | |
c906108c SS |
4981 | perror_with_name (name); |
4982 | ||
4983 | if (baud_rate != -1) | |
4984 | { | |
5d93a237 | 4985 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4986 | { |
9b74d5d3 KB |
4987 | /* The requested speed could not be set. Error out to |
4988 | top level after closing remote_desc. Take care to | |
4989 | set remote_desc to NULL to avoid closing remote_desc | |
4990 | more than once. */ | |
5d93a237 TT |
4991 | serial_close (rs->remote_desc); |
4992 | rs->remote_desc = NULL; | |
c906108c SS |
4993 | perror_with_name (name); |
4994 | } | |
4995 | } | |
4996 | ||
236af5e3 | 4997 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4998 | serial_raw (rs->remote_desc); |
c906108c SS |
4999 | |
5000 | /* If there is something sitting in the buffer we might take it as a | |
5001 | response to a command, which would be bad. */ | |
5d93a237 | 5002 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5003 | |
5004 | if (from_tty) | |
5005 | { | |
5006 | puts_filtered ("Remote debugging using "); | |
5007 | puts_filtered (name); | |
5008 | puts_filtered ("\n"); | |
5009 | } | |
23860348 | 5010 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 5011 | |
74531fed PA |
5012 | /* Register extra event sources in the event loop. */ |
5013 | remote_async_inferior_event_token | |
5014 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5015 | NULL); | |
5965e028 | 5016 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5017 | |
be2a5f71 DJ |
5018 | /* Reset the target state; these things will be queried either by |
5019 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5020 | reset_all_packet_configs_support (); |
74531fed | 5021 | rs->cached_wait_status = 0; |
be2a5f71 | 5022 | rs->explicit_packet_size = 0; |
a6f3e723 | 5023 | rs->noack_mode = 0; |
82f73884 | 5024 | rs->extended = extended_p; |
e24a49d8 | 5025 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5026 | rs->ctrlc_pending_p = 0; |
048094ac | 5027 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5028 | |
47f8a51d TT |
5029 | rs->general_thread = not_sent_ptid; |
5030 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5031 | rs->remote_traceframe_number = -1; |
c906108c | 5032 | |
3a00c802 PA |
5033 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5034 | ||
9d1f7ab2 | 5035 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5036 | rs->use_threadinfo_query = 1; |
5037 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5038 | |
80152258 PA |
5039 | readahead_cache_invalidate (); |
5040 | ||
c6ebd6cf | 5041 | if (target_async_permitted) |
92d1e331 | 5042 | { |
92d1e331 DJ |
5043 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5044 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5045 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5046 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5047 | around this. Eventually a mechanism that allows |
92d1e331 | 5048 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5049 | implemented. */ |
92d1e331 DJ |
5050 | wait_forever_enabled_p = 0; |
5051 | } | |
5052 | ||
23860348 | 5053 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5054 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5055 | |
74531fed PA |
5056 | /* Start afresh. */ |
5057 | init_thread_list (); | |
5058 | ||
36918e70 | 5059 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5060 | target (we'd otherwise be in an inconsistent state) and then |
5061 | propogate the error on up the exception chain. This ensures that | |
5062 | the caller doesn't stumble along blindly assuming that the | |
5063 | function succeeded. The CLI doesn't have this problem but other | |
5064 | UI's, such as MI do. | |
36918e70 AC |
5065 | |
5066 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5067 | this function should return an error indication letting the | |
ce2826aa | 5068 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5069 | ``target remote'' is directly wired to this function making that |
5070 | impossible. On a positive note, the CLI side of this problem has | |
5071 | been fixed - the function set_cmd_context() makes it possible for | |
5072 | all the ``target ....'' commands to share a common callback | |
5073 | function. See cli-dump.c. */ | |
109c3e39 | 5074 | { |
2d717e4f | 5075 | |
492d29ea | 5076 | TRY |
04bd08de TT |
5077 | { |
5078 | remote_start_remote (from_tty, target, extended_p); | |
5079 | } | |
492d29ea | 5080 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5081 | { |
c8d104ad PA |
5082 | /* Pop the partially set up target - unless something else did |
5083 | already before throwing the exception. */ | |
5d93a237 | 5084 | if (rs->remote_desc != NULL) |
78a095c3 | 5085 | remote_unpush_target (); |
c6ebd6cf | 5086 | if (target_async_permitted) |
109c3e39 AC |
5087 | wait_forever_enabled_p = 1; |
5088 | throw_exception (ex); | |
5089 | } | |
492d29ea | 5090 | END_CATCH |
109c3e39 | 5091 | } |
c906108c | 5092 | |
f4abbc16 MM |
5093 | remote_btrace_reset (); |
5094 | ||
c6ebd6cf | 5095 | if (target_async_permitted) |
92d1e331 | 5096 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5097 | } |
5098 | ||
de0d863e DB |
5099 | /* Detach the specified process. */ |
5100 | ||
5101 | static void | |
5102 | remote_detach_pid (int pid) | |
5103 | { | |
5104 | struct remote_state *rs = get_remote_state (); | |
5105 | ||
5106 | if (remote_multi_process_p (rs)) | |
5107 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5108 | else | |
5109 | strcpy (rs->buf, "D"); | |
5110 | ||
5111 | putpkt (rs->buf); | |
5112 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5113 | ||
5114 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5115 | ; | |
5116 | else if (rs->buf[0] == '\0') | |
5117 | error (_("Remote doesn't know how to detach")); | |
5118 | else | |
5119 | error (_("Can't detach process.")); | |
5120 | } | |
5121 | ||
5122 | /* This detaches a program to which we previously attached, using | |
5123 | inferior_ptid to identify the process. After this is done, GDB | |
5124 | can be used to debug some other program. We better not have left | |
5125 | any breakpoints in the target program or it'll die when it hits | |
5126 | one. */ | |
c906108c SS |
5127 | |
5128 | static void | |
6e1e1966 | 5129 | remote_detach_1 (int from_tty, inferior *inf) |
c906108c | 5130 | { |
82f73884 | 5131 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5132 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5133 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5134 | int is_fork_parent; | |
c906108c | 5135 | |
2d717e4f DJ |
5136 | if (!target_has_execution) |
5137 | error (_("No process to detach from.")); | |
5138 | ||
0f48b757 | 5139 | target_announce_detach (from_tty); |
7cee1e54 | 5140 | |
c906108c | 5141 | /* Tell the remote target to detach. */ |
de0d863e | 5142 | remote_detach_pid (pid); |
82f73884 | 5143 | |
8020350c DB |
5144 | /* Exit only if this is the only active inferior. */ |
5145 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5146 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5147 | |
de0d863e DB |
5148 | /* Check to see if we are detaching a fork parent. Note that if we |
5149 | are detaching a fork child, tp == NULL. */ | |
5150 | is_fork_parent = (tp != NULL | |
5151 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5152 | ||
5153 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5154 | breakpoints that should be available for the followed inferior. */ | |
5155 | if (!is_fork_parent) | |
bc1e6c81 | 5156 | target_mourn_inferior (inferior_ptid); |
de0d863e DB |
5157 | else |
5158 | { | |
5159 | inferior_ptid = null_ptid; | |
5160 | detach_inferior (pid); | |
5161 | } | |
2d717e4f DJ |
5162 | } |
5163 | ||
5164 | static void | |
6e1e1966 | 5165 | remote_detach (struct target_ops *ops, inferior *inf, int from_tty) |
2d717e4f | 5166 | { |
6e1e1966 | 5167 | remote_detach_1 (from_tty, inf); |
2d717e4f DJ |
5168 | } |
5169 | ||
5170 | static void | |
6e1e1966 | 5171 | extended_remote_detach (struct target_ops *ops, inferior *inf, int from_tty) |
2d717e4f | 5172 | { |
6e1e1966 | 5173 | remote_detach_1 (from_tty, inf); |
de0d863e DB |
5174 | } |
5175 | ||
5176 | /* Target follow-fork function for remote targets. On entry, and | |
5177 | at return, the current inferior is the fork parent. | |
5178 | ||
5179 | Note that although this is currently only used for extended-remote, | |
5180 | it is named remote_follow_fork in anticipation of using it for the | |
5181 | remote target as well. */ | |
5182 | ||
5183 | static int | |
5184 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5185 | int detach_fork) | |
5186 | { | |
5187 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5188 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5189 | |
c269dbdb DB |
5190 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5191 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5192 | { |
5193 | /* When following the parent and detaching the child, we detach | |
5194 | the child here. For the case of following the child and | |
5195 | detaching the parent, the detach is done in the target- | |
5196 | independent follow fork code in infrun.c. We can't use | |
5197 | target_detach when detaching an unfollowed child because | |
5198 | the client side doesn't know anything about the child. */ | |
5199 | if (detach_fork && !follow_child) | |
5200 | { | |
5201 | /* Detach the fork child. */ | |
5202 | ptid_t child_ptid; | |
5203 | pid_t child_pid; | |
5204 | ||
5205 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5206 | child_pid = ptid_get_pid (child_ptid); | |
5207 | ||
5208 | remote_detach_pid (child_pid); | |
de0d863e DB |
5209 | } |
5210 | } | |
5211 | return 0; | |
c906108c SS |
5212 | } |
5213 | ||
94585166 DB |
5214 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5215 | in the program space of the new inferior. On entry and at return the | |
5216 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5217 | inferior, which may be the same as the exec'ing inferior unless | |
5218 | follow-exec-mode is "new". */ | |
5219 | ||
5220 | static void | |
5221 | remote_follow_exec (struct target_ops *ops, | |
5222 | struct inferior *inf, char *execd_pathname) | |
5223 | { | |
5224 | /* We know that this is a target file name, so if it has the "target:" | |
5225 | prefix we strip it off before saving it in the program space. */ | |
5226 | if (is_target_filename (execd_pathname)) | |
5227 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5228 | ||
5229 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5230 | } | |
5231 | ||
6ad8ae5c DJ |
5232 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5233 | ||
43ff13b4 | 5234 | static void |
fee354ee | 5235 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5236 | { |
43ff13b4 | 5237 | if (args) |
2d717e4f | 5238 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5239 | |
8020350c DB |
5240 | /* Make sure we unpush even the extended remote targets. Calling |
5241 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5242 | unpush if there is more than one inferior left. */ | |
5243 | unpush_target (target); | |
5244 | generic_mourn_inferior (); | |
2d717e4f | 5245 | |
43ff13b4 JM |
5246 | if (from_tty) |
5247 | puts_filtered ("Ending remote debugging.\n"); | |
5248 | } | |
5249 | ||
2d717e4f DJ |
5250 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5251 | be chatty about it. */ | |
5252 | ||
5253 | static void | |
20f796c9 GB |
5254 | extended_remote_attach (struct target_ops *target, const char *args, |
5255 | int from_tty) | |
2d717e4f DJ |
5256 | { |
5257 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5258 | int pid; |
96ef3384 | 5259 | char *wait_status = NULL; |
2d717e4f | 5260 | |
74164c56 | 5261 | pid = parse_pid_to_attach (args); |
2d717e4f | 5262 | |
74164c56 JK |
5263 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5264 | way as in other targets. */ | |
2d717e4f | 5265 | |
4082afcc | 5266 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5267 | error (_("This target does not support attaching to a process")); |
5268 | ||
7cee1e54 PA |
5269 | if (from_tty) |
5270 | { | |
5271 | char *exec_file = get_exec_file (0); | |
5272 | ||
5273 | if (exec_file) | |
5274 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5275 | target_pid_to_str (pid_to_ptid (pid))); | |
5276 | else | |
5277 | printf_unfiltered (_("Attaching to %s\n"), | |
5278 | target_pid_to_str (pid_to_ptid (pid))); | |
5279 | ||
5280 | gdb_flush (gdb_stdout); | |
5281 | } | |
5282 | ||
bba74b36 | 5283 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5284 | putpkt (rs->buf); |
5285 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5286 | ||
4082afcc PA |
5287 | switch (packet_ok (rs->buf, |
5288 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5289 | { |
4082afcc | 5290 | case PACKET_OK: |
6efcd9a8 | 5291 | if (!target_is_non_stop_p ()) |
74531fed PA |
5292 | { |
5293 | /* Save the reply for later. */ | |
224c3ddb | 5294 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5295 | strcpy (wait_status, rs->buf); |
5296 | } | |
5297 | else if (strcmp (rs->buf, "OK") != 0) | |
5298 | error (_("Attaching to %s failed with: %s"), | |
5299 | target_pid_to_str (pid_to_ptid (pid)), | |
5300 | rs->buf); | |
4082afcc PA |
5301 | break; |
5302 | case PACKET_UNKNOWN: | |
5303 | error (_("This target does not support attaching to a process")); | |
5304 | default: | |
5305 | error (_("Attaching to %s failed"), | |
5306 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5307 | } |
2d717e4f | 5308 | |
1b6e6f5c | 5309 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5310 | |
2d717e4f | 5311 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5312 | |
6efcd9a8 | 5313 | if (target_is_non_stop_p ()) |
bad34192 PA |
5314 | { |
5315 | struct thread_info *thread; | |
79d7f229 | 5316 | |
bad34192 | 5317 | /* Get list of threads. */ |
e8032dde | 5318 | remote_update_thread_list (target); |
82f73884 | 5319 | |
bad34192 PA |
5320 | thread = first_thread_of_process (pid); |
5321 | if (thread) | |
5322 | inferior_ptid = thread->ptid; | |
5323 | else | |
5324 | inferior_ptid = pid_to_ptid (pid); | |
5325 | ||
5326 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5327 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5328 | } |
74531fed | 5329 | else |
bad34192 PA |
5330 | { |
5331 | /* Now, if we have thread information, update inferior_ptid. */ | |
5332 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5333 | ||
5334 | /* Add the main thread to the thread list. */ | |
5335 | add_thread_silent (inferior_ptid); | |
5336 | } | |
c0a2216e | 5337 | |
96ef3384 UW |
5338 | /* Next, if the target can specify a description, read it. We do |
5339 | this before anything involving memory or registers. */ | |
5340 | target_find_description (); | |
5341 | ||
6efcd9a8 | 5342 | if (!target_is_non_stop_p ()) |
74531fed PA |
5343 | { |
5344 | /* Use the previously fetched status. */ | |
5345 | gdb_assert (wait_status != NULL); | |
5346 | ||
5347 | if (target_can_async_p ()) | |
5348 | { | |
722247f1 YQ |
5349 | struct notif_event *reply |
5350 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5351 | |
722247f1 | 5352 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5353 | |
6a3753b3 | 5354 | target_async (1); |
74531fed PA |
5355 | } |
5356 | else | |
5357 | { | |
5358 | gdb_assert (wait_status != NULL); | |
5359 | strcpy (rs->buf, wait_status); | |
5360 | rs->cached_wait_status = 1; | |
5361 | } | |
5362 | } | |
5363 | else | |
5364 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5365 | } |
5366 | ||
b9c1d481 AS |
5367 | /* Implementation of the to_post_attach method. */ |
5368 | ||
5369 | static void | |
5370 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5371 | { | |
6efcd9a8 PA |
5372 | /* Get text, data & bss offsets. */ |
5373 | get_offsets (); | |
5374 | ||
b9c1d481 AS |
5375 | /* In certain cases GDB might not have had the chance to start |
5376 | symbol lookup up until now. This could happen if the debugged | |
5377 | binary is not using shared libraries, the vsyscall page is not | |
5378 | present (on Linux) and the binary itself hadn't changed since the | |
5379 | debugging process was started. */ | |
5380 | if (symfile_objfile != NULL) | |
5381 | remote_check_symbols(); | |
5382 | } | |
5383 | ||
c906108c | 5384 | \f |
506fb367 DJ |
5385 | /* Check for the availability of vCont. This function should also check |
5386 | the response. */ | |
c906108c SS |
5387 | |
5388 | static void | |
6d820c5c | 5389 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5390 | { |
2e9f7625 | 5391 | char *buf; |
6d820c5c | 5392 | |
2e9f7625 DJ |
5393 | strcpy (rs->buf, "vCont?"); |
5394 | putpkt (rs->buf); | |
6d820c5c | 5395 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5396 | buf = rs->buf; |
c906108c | 5397 | |
506fb367 | 5398 | /* Make sure that the features we assume are supported. */ |
61012eef | 5399 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5400 | { |
5401 | char *p = &buf[5]; | |
750ce8d1 | 5402 | int support_c, support_C; |
506fb367 | 5403 | |
750ce8d1 YQ |
5404 | rs->supports_vCont.s = 0; |
5405 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5406 | support_c = 0; |
5407 | support_C = 0; | |
d458bd84 | 5408 | rs->supports_vCont.t = 0; |
c1e36e3e | 5409 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5410 | while (p && *p == ';') |
5411 | { | |
5412 | p++; | |
5413 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5414 | rs->supports_vCont.s = 1; |
506fb367 | 5415 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5416 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5417 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5418 | support_c = 1; | |
5419 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5420 | support_C = 1; | |
74531fed | 5421 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5422 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5423 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5424 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5425 | |
5426 | p = strchr (p, ';'); | |
5427 | } | |
c906108c | 5428 | |
750ce8d1 YQ |
5429 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5430 | BUF will make packet_ok disable the packet. */ | |
5431 | if (!support_c || !support_C) | |
506fb367 DJ |
5432 | buf[0] = 0; |
5433 | } | |
c906108c | 5434 | |
444abaca | 5435 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5436 | } |
c906108c | 5437 | |
0d8f58ca PA |
5438 | /* Helper function for building "vCont" resumptions. Write a |
5439 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5440 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5441 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5442 | resumed thread should be single-stepped and/or signalled. If PTID | |
5443 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5444 | represents a process, then all threads of the process are resumed; | |
5445 | the thread to be stepped and/or signalled is given in the global | |
5446 | INFERIOR_PTID. */ | |
5447 | ||
5448 | static char * | |
5449 | append_resumption (char *p, char *endp, | |
2ea28649 | 5450 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5451 | { |
5452 | struct remote_state *rs = get_remote_state (); | |
5453 | ||
a493e3e2 | 5454 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5455 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5456 | else if (step |
5457 | /* GDB is willing to range step. */ | |
5458 | && use_range_stepping | |
5459 | /* Target supports range stepping. */ | |
5460 | && rs->supports_vCont.r | |
5461 | /* We don't currently support range stepping multiple | |
5462 | threads with a wildcard (though the protocol allows it, | |
5463 | so stubs shouldn't make an active effort to forbid | |
5464 | it). */ | |
5465 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5466 | { | |
5467 | struct thread_info *tp; | |
5468 | ||
5469 | if (ptid_equal (ptid, minus_one_ptid)) | |
5470 | { | |
5471 | /* If we don't know about the target thread's tid, then | |
5472 | we're resuming magic_null_ptid (see caller). */ | |
5473 | tp = find_thread_ptid (magic_null_ptid); | |
5474 | } | |
5475 | else | |
5476 | tp = find_thread_ptid (ptid); | |
5477 | gdb_assert (tp != NULL); | |
5478 | ||
5479 | if (tp->control.may_range_step) | |
5480 | { | |
5481 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5482 | ||
5483 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5484 | phex_nz (tp->control.step_range_start, | |
5485 | addr_size), | |
5486 | phex_nz (tp->control.step_range_end, | |
5487 | addr_size)); | |
5488 | } | |
5489 | else | |
5490 | p += xsnprintf (p, endp - p, ";s"); | |
5491 | } | |
0d8f58ca PA |
5492 | else if (step) |
5493 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5494 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5495 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5496 | else | |
5497 | p += xsnprintf (p, endp - p, ";c"); | |
5498 | ||
5499 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5500 | { | |
5501 | ptid_t nptid; | |
5502 | ||
5503 | /* All (-1) threads of process. */ | |
ba348170 | 5504 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5505 | |
5506 | p += xsnprintf (p, endp - p, ":"); | |
5507 | p = write_ptid (p, endp, nptid); | |
5508 | } | |
5509 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5510 | { | |
5511 | p += xsnprintf (p, endp - p, ":"); | |
5512 | p = write_ptid (p, endp, ptid); | |
5513 | } | |
5514 | ||
5515 | return p; | |
5516 | } | |
5517 | ||
799a2abe PA |
5518 | /* Clear the thread's private info on resume. */ |
5519 | ||
5520 | static void | |
5521 | resume_clear_thread_private_info (struct thread_info *thread) | |
5522 | { | |
5523 | if (thread->priv != NULL) | |
5524 | { | |
7aabaf9d SM |
5525 | remote_thread_info *priv = get_remote_thread_info (thread); |
5526 | ||
5527 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5528 | priv->watch_data_address = 0; | |
799a2abe PA |
5529 | } |
5530 | } | |
5531 | ||
e5ef252a PA |
5532 | /* Append a vCont continue-with-signal action for threads that have a |
5533 | non-zero stop signal. */ | |
5534 | ||
5535 | static char * | |
5536 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5537 | { | |
5538 | struct thread_info *thread; | |
5539 | ||
034f788c | 5540 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5541 | if (ptid_match (thread->ptid, ptid) |
5542 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5543 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5544 | { |
5545 | p = append_resumption (p, endp, thread->ptid, | |
5546 | 0, thread->suspend.stop_signal); | |
5547 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5548 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5549 | } |
5550 | ||
5551 | return p; | |
5552 | } | |
5553 | ||
7b68ffbb PA |
5554 | /* Set the target running, using the packets that use Hc |
5555 | (c/s/C/S). */ | |
5556 | ||
5557 | static void | |
5558 | remote_resume_with_hc (struct target_ops *ops, | |
5559 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5560 | { | |
5561 | struct remote_state *rs = get_remote_state (); | |
5562 | struct thread_info *thread; | |
5563 | char *buf; | |
5564 | ||
5565 | rs->last_sent_signal = siggnal; | |
5566 | rs->last_sent_step = step; | |
5567 | ||
5568 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5569 | thread. */ | |
5570 | if (ptid_equal (ptid, minus_one_ptid)) | |
5571 | set_continue_thread (any_thread_ptid); | |
5572 | else | |
5573 | set_continue_thread (ptid); | |
5574 | ||
5575 | ALL_NON_EXITED_THREADS (thread) | |
5576 | resume_clear_thread_private_info (thread); | |
5577 | ||
5578 | buf = rs->buf; | |
5579 | if (execution_direction == EXEC_REVERSE) | |
5580 | { | |
5581 | /* We don't pass signals to the target in reverse exec mode. */ | |
5582 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5583 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5584 | siggnal); | |
5585 | ||
5586 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5587 | error (_("Remote reverse-step not supported.")); | |
5588 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5589 | error (_("Remote reverse-continue not supported.")); | |
5590 | ||
5591 | strcpy (buf, step ? "bs" : "bc"); | |
5592 | } | |
5593 | else if (siggnal != GDB_SIGNAL_0) | |
5594 | { | |
5595 | buf[0] = step ? 'S' : 'C'; | |
5596 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5597 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5598 | buf[3] = '\0'; | |
5599 | } | |
5600 | else | |
5601 | strcpy (buf, step ? "s" : "c"); | |
5602 | ||
5603 | putpkt (buf); | |
5604 | } | |
5605 | ||
506fb367 DJ |
5606 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5607 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5608 | resumed thread should be single-stepped and/or signalled. If PTID |
5609 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5610 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5611 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5612 | |
7b68ffbb PA |
5613 | This function issues a strict subset of all possible vCont commands |
5614 | at the moment. */ | |
44eaed12 | 5615 | |
506fb367 | 5616 | static int |
7b68ffbb | 5617 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5618 | { |
5619 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5620 | char *p; |
5621 | char *endp; | |
44eaed12 | 5622 | |
7b68ffbb PA |
5623 | /* No reverse execution actions defined for vCont. */ |
5624 | if (execution_direction == EXEC_REVERSE) | |
5625 | return 0; | |
5626 | ||
4082afcc | 5627 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5628 | remote_vcont_probe (rs); |
44eaed12 | 5629 | |
4082afcc | 5630 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5631 | return 0; |
44eaed12 | 5632 | |
82f73884 PA |
5633 | p = rs->buf; |
5634 | endp = rs->buf + get_remote_packet_size (); | |
5635 | ||
506fb367 DJ |
5636 | /* If we could generate a wider range of packets, we'd have to worry |
5637 | about overflowing BUF. Should there be a generic | |
5638 | "multi-part-packet" packet? */ | |
5639 | ||
0d8f58ca PA |
5640 | p += xsnprintf (p, endp - p, "vCont"); |
5641 | ||
79d7f229 | 5642 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5643 | { |
79d7f229 PA |
5644 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5645 | so we don't have any TID numbers the inferior will | |
5646 | understand. Make sure to only send forms that do not specify | |
5647 | a TID. */ | |
a9cbf802 | 5648 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5649 | } |
0d8f58ca | 5650 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5651 | { |
0d8f58ca PA |
5652 | /* Resume all threads (of all processes, or of a single |
5653 | process), with preference for INFERIOR_PTID. This assumes | |
5654 | inferior_ptid belongs to the set of all threads we are about | |
5655 | to resume. */ | |
a493e3e2 | 5656 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5657 | { |
0d8f58ca PA |
5658 | /* Step inferior_ptid, with or without signal. */ |
5659 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5660 | } |
0d8f58ca | 5661 | |
e5ef252a PA |
5662 | /* Also pass down any pending signaled resumption for other |
5663 | threads not the current. */ | |
5664 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5665 | ||
0d8f58ca | 5666 | /* And continue others without a signal. */ |
a493e3e2 | 5667 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5668 | } |
5669 | else | |
506fb367 DJ |
5670 | { |
5671 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5672 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5673 | } |
c906108c | 5674 | |
82f73884 PA |
5675 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5676 | putpkt (rs->buf); | |
506fb367 | 5677 | |
6efcd9a8 | 5678 | if (target_is_non_stop_p ()) |
74531fed PA |
5679 | { |
5680 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5681 | reply will be reported asynchronously by means of a `%Stop' | |
5682 | notification. */ | |
5683 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5684 | if (strcmp (rs->buf, "OK") != 0) | |
5685 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5686 | } | |
5687 | ||
506fb367 | 5688 | return 1; |
c906108c | 5689 | } |
43ff13b4 | 5690 | |
506fb367 DJ |
5691 | /* Tell the remote machine to resume. */ |
5692 | ||
43ff13b4 | 5693 | static void |
28439f5e | 5694 | remote_resume (struct target_ops *ops, |
2ea28649 | 5695 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5696 | { |
d01949b6 | 5697 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 5698 | |
85ad3aaf PA |
5699 | /* When connected in non-stop mode, the core resumes threads |
5700 | individually. Resuming remote threads directly in target_resume | |
5701 | would thus result in sending one packet per thread. Instead, to | |
5702 | minimize roundtrip latency, here we just store the resume | |
5703 | request; the actual remote resumption will be done in | |
5704 | target_commit_resume / remote_commit_resume, where we'll be able | |
5705 | to do vCont action coalescing. */ | |
5706 | if (target_is_non_stop_p () && execution_direction != EXEC_REVERSE) | |
5707 | { | |
7aabaf9d | 5708 | remote_thread_info *remote_thr; |
85ad3aaf PA |
5709 | |
5710 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
7aabaf9d | 5711 | remote_thr = get_remote_thread_info (inferior_ptid); |
85ad3aaf | 5712 | else |
7aabaf9d SM |
5713 | remote_thr = get_remote_thread_info (ptid); |
5714 | ||
85ad3aaf PA |
5715 | remote_thr->last_resume_step = step; |
5716 | remote_thr->last_resume_sig = siggnal; | |
5717 | return; | |
5718 | } | |
5719 | ||
722247f1 YQ |
5720 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5721 | (explained in remote-notif.c:handle_notification) so | |
5722 | remote_notif_process is not called. We need find a place where | |
5723 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5724 | before resuming inferior, because inferior was stopped and no RSP | |
5725 | traffic at that moment. */ | |
6efcd9a8 | 5726 | if (!target_is_non_stop_p ()) |
5965e028 | 5727 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5728 | |
3a00c802 PA |
5729 | rs->last_resume_exec_dir = execution_direction; |
5730 | ||
7b68ffbb PA |
5731 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
5732 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
5733 | remote_resume_with_hc (ops, ptid, step, siggnal); | |
43ff13b4 | 5734 | |
2acceee2 | 5735 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5736 | with the event loop. NOTE: this is the one place where all the |
5737 | execution commands end up. We could alternatively do this in each | |
23860348 | 5738 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5739 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5740 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5741 | NOT asynchronously. */ |
362646f5 | 5742 | if (target_can_async_p ()) |
6a3753b3 | 5743 | target_async (1); |
e24a49d8 PA |
5744 | |
5745 | /* We've just told the target to resume. The remote server will | |
5746 | wait for the inferior to stop, and then send a stop reply. In | |
5747 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5748 | because the stub wouldn't be ready to process it. This applies |
5749 | only to the base all-stop protocol, however. In non-stop (which | |
5750 | only supports vCont), the stub replies with an "OK", and is | |
5751 | immediate able to process further serial input. */ | |
6efcd9a8 | 5752 | if (!target_is_non_stop_p ()) |
74531fed | 5753 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5754 | } |
85ad3aaf PA |
5755 | |
5756 | static void check_pending_events_prevent_wildcard_vcont | |
5757 | (int *may_global_wildcard_vcont); | |
5758 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
5759 | ||
5760 | /* Private per-inferior info for target remote processes. */ | |
5761 | ||
089354bb | 5762 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
5763 | { |
5764 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 5765 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
5766 | }; |
5767 | ||
089354bb SM |
5768 | /* Get the remote private inferior data associated to INF. */ |
5769 | ||
5770 | static remote_inferior * | |
5771 | get_remote_inferior (inferior *inf) | |
5772 | { | |
5773 | if (inf->priv == NULL) | |
5774 | inf->priv.reset (new remote_inferior); | |
5775 | ||
5776 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
5777 | } | |
5778 | ||
85ad3aaf PA |
5779 | /* Structure used to track the construction of a vCont packet in the |
5780 | outgoing packet buffer. This is used to send multiple vCont | |
5781 | packets if we have more actions than would fit a single packet. */ | |
5782 | ||
5783 | struct vcont_builder | |
5784 | { | |
5785 | /* Pointer to the first action. P points here if no action has been | |
5786 | appended yet. */ | |
5787 | char *first_action; | |
5788 | ||
5789 | /* Where the next action will be appended. */ | |
5790 | char *p; | |
5791 | ||
5792 | /* The end of the buffer. Must never write past this. */ | |
5793 | char *endp; | |
5794 | }; | |
5795 | ||
5796 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
5797 | ||
5798 | static void | |
5799 | vcont_builder_restart (struct vcont_builder *builder) | |
5800 | { | |
5801 | struct remote_state *rs = get_remote_state (); | |
5802 | ||
5803 | builder->p = rs->buf; | |
5804 | builder->endp = rs->buf + get_remote_packet_size (); | |
5805 | builder->p += xsnprintf (builder->p, builder->endp - builder->p, "vCont"); | |
5806 | builder->first_action = builder->p; | |
5807 | } | |
5808 | ||
5809 | /* If the vCont packet being built has any action, send it to the | |
5810 | remote end. */ | |
5811 | ||
5812 | static void | |
5813 | vcont_builder_flush (struct vcont_builder *builder) | |
5814 | { | |
5815 | struct remote_state *rs; | |
5816 | ||
5817 | if (builder->p == builder->first_action) | |
5818 | return; | |
5819 | ||
5820 | rs = get_remote_state (); | |
5821 | putpkt (rs->buf); | |
5822 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5823 | if (strcmp (rs->buf, "OK") != 0) | |
5824 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5825 | } | |
5826 | ||
5827 | /* The largest action is range-stepping, with its two addresses. This | |
5828 | is more than sufficient. If a new, bigger action is created, it'll | |
5829 | quickly trigger a failed assertion in append_resumption (and we'll | |
5830 | just bump this). */ | |
5831 | #define MAX_ACTION_SIZE 200 | |
5832 | ||
5833 | /* Append a new vCont action in the outgoing packet being built. If | |
5834 | the action doesn't fit the packet along with previous actions, push | |
5835 | what we've got so far to the remote end and start over a new vCont | |
5836 | packet (with the new action). */ | |
5837 | ||
5838 | static void | |
5839 | vcont_builder_push_action (struct vcont_builder *builder, | |
5840 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5841 | { | |
5842 | char buf[MAX_ACTION_SIZE + 1]; | |
5843 | char *endp; | |
5844 | size_t rsize; | |
5845 | ||
5846 | endp = append_resumption (buf, buf + sizeof (buf), | |
5847 | ptid, step, siggnal); | |
5848 | ||
5849 | /* Check whether this new action would fit in the vCont packet along | |
5850 | with previous actions. If not, send what we've got so far and | |
5851 | start a new vCont packet. */ | |
5852 | rsize = endp - buf; | |
5853 | if (rsize > builder->endp - builder->p) | |
5854 | { | |
5855 | vcont_builder_flush (builder); | |
5856 | vcont_builder_restart (builder); | |
5857 | ||
5858 | /* Should now fit. */ | |
5859 | gdb_assert (rsize <= builder->endp - builder->p); | |
5860 | } | |
5861 | ||
5862 | memcpy (builder->p, buf, rsize); | |
5863 | builder->p += rsize; | |
5864 | *builder->p = '\0'; | |
5865 | } | |
5866 | ||
5867 | /* to_commit_resume implementation. */ | |
5868 | ||
5869 | static void | |
5870 | remote_commit_resume (struct target_ops *ops) | |
5871 | { | |
85ad3aaf PA |
5872 | struct inferior *inf; |
5873 | struct thread_info *tp; | |
5874 | int any_process_wildcard; | |
5875 | int may_global_wildcard_vcont; | |
5876 | struct vcont_builder vcont_builder; | |
5877 | ||
5878 | /* If connected in all-stop mode, we'd send the remote resume | |
5879 | request directly from remote_resume. Likewise if | |
5880 | reverse-debugging, as there are no defined vCont actions for | |
5881 | reverse execution. */ | |
5882 | if (!target_is_non_stop_p () || execution_direction == EXEC_REVERSE) | |
5883 | return; | |
5884 | ||
5885 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
5886 | instead of resuming all threads of each process individually. | |
5887 | However, if any thread of a process must remain halted, we can't | |
5888 | send wildcard resumes and must send one action per thread. | |
5889 | ||
5890 | Care must be taken to not resume threads/processes the server | |
5891 | side already told us are stopped, but the core doesn't know about | |
5892 | yet, because the events are still in the vStopped notification | |
5893 | queue. For example: | |
5894 | ||
5895 | #1 => vCont s:p1.1;c | |
5896 | #2 <= OK | |
5897 | #3 <= %Stopped T05 p1.1 | |
5898 | #4 => vStopped | |
5899 | #5 <= T05 p1.2 | |
5900 | #6 => vStopped | |
5901 | #7 <= OK | |
5902 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
5903 | #9 => vCont s:p1.1;c | |
5904 | ||
5905 | The last vCont above would resume thread p1.2 by mistake, because | |
5906 | the server has no idea that the event for p1.2 had not been | |
5907 | handled yet. | |
5908 | ||
5909 | The server side must similarly ignore resume actions for the | |
5910 | thread that has a pending %Stopped notification (and any other | |
5911 | threads with events pending), until GDB acks the notification | |
5912 | with vStopped. Otherwise, e.g., the following case is | |
5913 | mishandled: | |
5914 | ||
5915 | #1 => g (or any other packet) | |
5916 | #2 <= [registers] | |
5917 | #3 <= %Stopped T05 p1.2 | |
5918 | #4 => vCont s:p1.1;c | |
5919 | #5 <= OK | |
5920 | ||
5921 | Above, the server must not resume thread p1.2. GDB can't know | |
5922 | that p1.2 stopped until it acks the %Stopped notification, and | |
5923 | since from GDB's perspective all threads should be running, it | |
5924 | sends a "c" action. | |
5925 | ||
5926 | Finally, special care must also be given to handling fork/vfork | |
5927 | events. A (v)fork event actually tells us that two processes | |
5928 | stopped -- the parent and the child. Until we follow the fork, | |
5929 | we must not resume the child. Therefore, if we have a pending | |
5930 | fork follow, we must not send a global wildcard resume action | |
5931 | (vCont;c). We can still send process-wide wildcards though. */ | |
5932 | ||
5933 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
5934 | may_global_wildcard_vcont = 1; | |
5935 | ||
5936 | /* And assume every process is individually wildcard-able too. */ | |
5937 | ALL_NON_EXITED_INFERIORS (inf) | |
5938 | { | |
089354bb SM |
5939 | remote_inferior *priv = get_remote_inferior (inf); |
5940 | ||
5941 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
5942 | } |
5943 | ||
5944 | /* Check for any pending events (not reported or processed yet) and | |
5945 | disable process and global wildcard resumes appropriately. */ | |
5946 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
5947 | ||
5948 | ALL_NON_EXITED_THREADS (tp) | |
5949 | { | |
5950 | /* If a thread of a process is not meant to be resumed, then we | |
5951 | can't wildcard that process. */ | |
5952 | if (!tp->executing) | |
5953 | { | |
089354bb | 5954 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
5955 | |
5956 | /* And if we can't wildcard a process, we can't wildcard | |
5957 | everything either. */ | |
5958 | may_global_wildcard_vcont = 0; | |
5959 | continue; | |
5960 | } | |
5961 | ||
5962 | /* If a thread is the parent of an unfollowed fork, then we | |
5963 | can't do a global wildcard, as that would resume the fork | |
5964 | child. */ | |
5965 | if (is_pending_fork_parent_thread (tp)) | |
5966 | may_global_wildcard_vcont = 0; | |
5967 | } | |
5968 | ||
5969 | /* Now let's build the vCont packet(s). Actions must be appended | |
5970 | from narrower to wider scopes (thread -> process -> global). If | |
5971 | we end up with too many actions for a single packet vcont_builder | |
5972 | flushes the current vCont packet to the remote side and starts a | |
5973 | new one. */ | |
5974 | vcont_builder_restart (&vcont_builder); | |
5975 | ||
5976 | /* Threads first. */ | |
5977 | ALL_NON_EXITED_THREADS (tp) | |
5978 | { | |
7aabaf9d | 5979 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
5980 | |
5981 | if (!tp->executing || remote_thr->vcont_resumed) | |
5982 | continue; | |
5983 | ||
5984 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
5985 | ||
5986 | if (!remote_thr->last_resume_step | |
5987 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 5988 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
5989 | { |
5990 | /* We'll send a wildcard resume instead. */ | |
5991 | remote_thr->vcont_resumed = 1; | |
5992 | continue; | |
5993 | } | |
5994 | ||
5995 | vcont_builder_push_action (&vcont_builder, tp->ptid, | |
5996 | remote_thr->last_resume_step, | |
5997 | remote_thr->last_resume_sig); | |
5998 | remote_thr->vcont_resumed = 1; | |
5999 | } | |
6000 | ||
6001 | /* Now check whether we can send any process-wide wildcard. This is | |
6002 | to avoid sending a global wildcard in the case nothing is | |
6003 | supposed to be resumed. */ | |
6004 | any_process_wildcard = 0; | |
6005 | ||
6006 | ALL_NON_EXITED_INFERIORS (inf) | |
6007 | { | |
089354bb | 6008 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6009 | { |
6010 | any_process_wildcard = 1; | |
6011 | break; | |
6012 | } | |
6013 | } | |
6014 | ||
6015 | if (any_process_wildcard) | |
6016 | { | |
6017 | /* If all processes are wildcard-able, then send a single "c" | |
6018 | action, otherwise, send an "all (-1) threads of process" | |
6019 | continue action for each running process, if any. */ | |
6020 | if (may_global_wildcard_vcont) | |
6021 | { | |
6022 | vcont_builder_push_action (&vcont_builder, minus_one_ptid, | |
6023 | 0, GDB_SIGNAL_0); | |
6024 | } | |
6025 | else | |
6026 | { | |
6027 | ALL_NON_EXITED_INFERIORS (inf) | |
6028 | { | |
089354bb | 6029 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6030 | { |
6031 | vcont_builder_push_action (&vcont_builder, | |
6032 | pid_to_ptid (inf->pid), | |
6033 | 0, GDB_SIGNAL_0); | |
6034 | } | |
6035 | } | |
6036 | } | |
6037 | } | |
6038 | ||
6039 | vcont_builder_flush (&vcont_builder); | |
6040 | } | |
6041 | ||
c906108c | 6042 | \f |
43ff13b4 | 6043 | |
74531fed PA |
6044 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6045 | thread, all threads of a remote process, or all threads of all | |
6046 | processes. */ | |
6047 | ||
6048 | static void | |
6049 | remote_stop_ns (ptid_t ptid) | |
6050 | { | |
6051 | struct remote_state *rs = get_remote_state (); | |
6052 | char *p = rs->buf; | |
6053 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6054 | |
4082afcc | 6055 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6056 | remote_vcont_probe (rs); |
6057 | ||
d458bd84 | 6058 | if (!rs->supports_vCont.t) |
74531fed PA |
6059 | error (_("Remote server does not support stopping threads")); |
6060 | ||
f91d3df5 PA |
6061 | if (ptid_equal (ptid, minus_one_ptid) |
6062 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6063 | p += xsnprintf (p, endp - p, "vCont;t"); |
6064 | else | |
6065 | { | |
6066 | ptid_t nptid; | |
6067 | ||
74531fed PA |
6068 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6069 | ||
6070 | if (ptid_is_pid (ptid)) | |
6071 | /* All (-1) threads of process. */ | |
ba348170 | 6072 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6073 | else |
6074 | { | |
6075 | /* Small optimization: if we already have a stop reply for | |
6076 | this thread, no use in telling the stub we want this | |
6077 | stopped. */ | |
6078 | if (peek_stop_reply (ptid)) | |
6079 | return; | |
6080 | ||
6081 | nptid = ptid; | |
6082 | } | |
6083 | ||
a9cbf802 | 6084 | write_ptid (p, endp, nptid); |
74531fed PA |
6085 | } |
6086 | ||
6087 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6088 | come in asynchronously by notification. */ | |
6089 | putpkt (rs->buf); | |
6090 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6091 | if (strcmp (rs->buf, "OK") != 0) | |
6092 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6093 | } | |
6094 | ||
bfedc46a PA |
6095 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6096 | interrupt the remote target. It is undefined which thread of which | |
6097 | process reports the interrupt. */ | |
74531fed PA |
6098 | |
6099 | static void | |
de979965 | 6100 | remote_interrupt_as (void) |
74531fed PA |
6101 | { |
6102 | struct remote_state *rs = get_remote_state (); | |
6103 | ||
3a29589a DJ |
6104 | rs->ctrlc_pending_p = 1; |
6105 | ||
74531fed PA |
6106 | /* If the inferior is stopped already, but the core didn't know |
6107 | about it yet, just ignore the request. The cached wait status | |
6108 | will be collected in remote_wait. */ | |
6109 | if (rs->cached_wait_status) | |
6110 | return; | |
6111 | ||
9a7071a8 JB |
6112 | /* Send interrupt_sequence to remote target. */ |
6113 | send_interrupt_sequence (); | |
74531fed PA |
6114 | } |
6115 | ||
de979965 PA |
6116 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6117 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6118 | reports the interrupt. Throws an error if the packet is not |
6119 | supported by the server. */ | |
de979965 | 6120 | |
e42de8c7 | 6121 | static void |
de979965 PA |
6122 | remote_interrupt_ns (void) |
6123 | { | |
6124 | struct remote_state *rs = get_remote_state (); | |
6125 | char *p = rs->buf; | |
6126 | char *endp = rs->buf + get_remote_packet_size (); | |
6127 | ||
6128 | xsnprintf (p, endp - p, "vCtrlC"); | |
6129 | ||
6130 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6131 | come in asynchronously by notification. */ | |
6132 | putpkt (rs->buf); | |
6133 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6134 | ||
6135 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6136 | { | |
6137 | case PACKET_OK: | |
6138 | break; | |
6139 | case PACKET_UNKNOWN: | |
e42de8c7 | 6140 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6141 | case PACKET_ERROR: |
6142 | error (_("Interrupting target failed: %s"), rs->buf); | |
6143 | } | |
de979965 PA |
6144 | } |
6145 | ||
bfedc46a | 6146 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6147 | |
c906108c | 6148 | static void |
1eab8a48 | 6149 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 6150 | { |
7a292a7a | 6151 | if (remote_debug) |
0f71a2f6 | 6152 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6153 | |
6efcd9a8 | 6154 | if (target_is_non_stop_p ()) |
74531fed | 6155 | remote_stop_ns (ptid); |
c906108c | 6156 | else |
bfedc46a PA |
6157 | { |
6158 | /* We don't currently have a way to transparently pause the | |
6159 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6160 | remote_interrupt_as (); |
bfedc46a PA |
6161 | } |
6162 | } | |
6163 | ||
6164 | /* Implement the to_interrupt function for the remote targets. */ | |
6165 | ||
6166 | static void | |
e671cd59 | 6167 | remote_interrupt (struct target_ops *self) |
bfedc46a PA |
6168 | { |
6169 | if (remote_debug) | |
6170 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6171 | ||
e42de8c7 PA |
6172 | if (target_is_non_stop_p ()) |
6173 | remote_interrupt_ns (); | |
bfedc46a | 6174 | else |
e42de8c7 | 6175 | remote_interrupt_as (); |
c906108c SS |
6176 | } |
6177 | ||
93692b58 PA |
6178 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6179 | ||
6180 | static void | |
6181 | remote_pass_ctrlc (struct target_ops *self) | |
6182 | { | |
6183 | struct remote_state *rs = get_remote_state (); | |
6184 | ||
6185 | if (remote_debug) | |
6186 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6187 | ||
6188 | /* If we're starting up, we're not fully synced yet. Quit | |
6189 | immediately. */ | |
6190 | if (rs->starting_up) | |
6191 | quit (); | |
6192 | /* If ^C has already been sent once, offer to disconnect. */ | |
6193 | else if (rs->ctrlc_pending_p) | |
6194 | interrupt_query (); | |
6195 | else | |
e671cd59 | 6196 | target_interrupt (); |
93692b58 PA |
6197 | } |
6198 | ||
c906108c SS |
6199 | /* Ask the user what to do when an interrupt is received. */ |
6200 | ||
6201 | static void | |
fba45db2 | 6202 | interrupt_query (void) |
c906108c | 6203 | { |
abc56d60 | 6204 | struct remote_state *rs = get_remote_state (); |
c906108c | 6205 | |
abc56d60 | 6206 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6207 | { |
abc56d60 PA |
6208 | if (query (_("The target is not responding to interrupt requests.\n" |
6209 | "Stop debugging it? "))) | |
74531fed | 6210 | { |
78a095c3 | 6211 | remote_unpush_target (); |
abc56d60 | 6212 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6213 | } |
6214 | } | |
abc56d60 PA |
6215 | else |
6216 | { | |
6217 | if (query (_("Interrupted while waiting for the program.\n" | |
6218 | "Give up waiting? "))) | |
6219 | quit (); | |
6220 | } | |
c906108c SS |
6221 | } |
6222 | ||
6426a772 JM |
6223 | /* Enable/disable target terminal ownership. Most targets can use |
6224 | terminal groups to control terminal ownership. Remote targets are | |
6225 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6226 | is required. */ |
6426a772 JM |
6227 | |
6228 | static void | |
d2f640d4 | 6229 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 6230 | { |
6426a772 JM |
6231 | /* NOTE: At this point we could also register our selves as the |
6232 | recipient of all input. Any characters typed could then be | |
23860348 | 6233 | passed on down to the target. */ |
6426a772 JM |
6234 | } |
6235 | ||
6236 | static void | |
e3594fd1 | 6237 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 6238 | { |
6426a772 JM |
6239 | } |
6240 | ||
176a6961 | 6241 | static void |
917317f4 | 6242 | remote_console_output (char *msg) |
c906108c SS |
6243 | { |
6244 | char *p; | |
6245 | ||
c5aa993b | 6246 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6247 | { |
6248 | char tb[2]; | |
6249 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6250 | |
c906108c SS |
6251 | tb[0] = c; |
6252 | tb[1] = 0; | |
43ff13b4 | 6253 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6254 | } |
00db5b94 PA |
6255 | gdb_flush (gdb_stdtarg); |
6256 | } | |
74531fed | 6257 | |
74531fed PA |
6258 | DEF_VEC_O(cached_reg_t); |
6259 | ||
722247f1 | 6260 | typedef struct stop_reply |
74531fed | 6261 | { |
722247f1 | 6262 | struct notif_event base; |
74531fed | 6263 | |
722247f1 | 6264 | /* The identifier of the thread about this event */ |
74531fed PA |
6265 | ptid_t ptid; |
6266 | ||
340e3c99 | 6267 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6268 | connection, represented by a remote_state object, is closed, |
6269 | all the associated stop_reply events should be released. */ | |
6270 | struct remote_state *rs; | |
6271 | ||
74531fed PA |
6272 | struct target_waitstatus ws; |
6273 | ||
5cd63fda PA |
6274 | /* The architecture associated with the expedited registers. */ |
6275 | gdbarch *arch; | |
6276 | ||
15148d6a PA |
6277 | /* Expedited registers. This makes remote debugging a bit more |
6278 | efficient for those targets that provide critical registers as | |
6279 | part of their normal status mechanism (as another roundtrip to | |
6280 | fetch them is avoided). */ | |
74531fed PA |
6281 | VEC(cached_reg_t) *regcache; |
6282 | ||
f7e6eed5 PA |
6283 | enum target_stop_reason stop_reason; |
6284 | ||
74531fed PA |
6285 | CORE_ADDR watch_data_address; |
6286 | ||
dc146f7c | 6287 | int core; |
722247f1 | 6288 | } *stop_reply_p; |
a744cf53 | 6289 | |
722247f1 YQ |
6290 | DECLARE_QUEUE_P (stop_reply_p); |
6291 | DEFINE_QUEUE_P (stop_reply_p); | |
6292 | /* The list of already fetched and acknowledged stop events. This | |
6293 | queue is used for notification Stop, and other notifications | |
6294 | don't need queue for their events, because the notification events | |
6295 | of Stop can't be consumed immediately, so that events should be | |
6296 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6297 | time. Other notifications can consume their events immediately, | |
6298 | so queue is not needed for them. */ | |
6299 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6300 | |
6301 | static void | |
6302 | stop_reply_xfree (struct stop_reply *r) | |
6303 | { | |
f48ff2a7 | 6304 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6305 | } |
6306 | ||
221e1a37 PA |
6307 | /* Return the length of the stop reply queue. */ |
6308 | ||
6309 | static int | |
6310 | stop_reply_queue_length (void) | |
6311 | { | |
6312 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6313 | } | |
6314 | ||
722247f1 YQ |
6315 | static void |
6316 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6317 | struct notif_event *event) | |
6318 | { | |
6319 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6320 | } | |
6321 | ||
6322 | static void | |
6323 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6324 | struct notif_event *event) | |
6325 | { | |
6326 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6327 | ||
6328 | /* acknowledge */ | |
f5c4fcd9 | 6329 | putpkt (self->ack_command); |
722247f1 YQ |
6330 | |
6331 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6332 | /* We got an unknown stop reply. */ | |
6333 | error (_("Unknown stop reply")); | |
6334 | ||
6335 | push_stop_reply (stop_reply); | |
6336 | } | |
6337 | ||
6338 | static int | |
6339 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6340 | { | |
6341 | /* We can't get pending events in remote_notif_process for | |
6342 | notification stop, and we have to do this in remote_wait_ns | |
6343 | instead. If we fetch all queued events from stub, remote stub | |
6344 | may exit and we have no chance to process them back in | |
6345 | remote_wait_ns. */ | |
6346 | mark_async_event_handler (remote_async_inferior_event_token); | |
6347 | return 0; | |
6348 | } | |
6349 | ||
6350 | static void | |
6351 | stop_reply_dtr (struct notif_event *event) | |
6352 | { | |
6353 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6354 | cached_reg_t *reg; |
6355 | int ix; | |
6356 | ||
6357 | for (ix = 0; | |
6358 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6359 | ix++) | |
6360 | xfree (reg->data); | |
722247f1 YQ |
6361 | |
6362 | VEC_free (cached_reg_t, r->regcache); | |
6363 | } | |
6364 | ||
6365 | static struct notif_event * | |
6366 | remote_notif_stop_alloc_reply (void) | |
6367 | { | |
8d749320 SM |
6368 | /* We cast to a pointer to the "base class". */ |
6369 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6370 | |
6371 | r->dtr = stop_reply_dtr; | |
6372 | ||
6373 | return r; | |
6374 | } | |
6375 | ||
6376 | /* A client of notification Stop. */ | |
6377 | ||
6378 | struct notif_client notif_client_stop = | |
6379 | { | |
6380 | "Stop", | |
6381 | "vStopped", | |
6382 | remote_notif_stop_parse, | |
6383 | remote_notif_stop_ack, | |
6384 | remote_notif_stop_can_get_pending_events, | |
6385 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6386 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6387 | }; |
6388 | ||
6389 | /* A parameter to pass data in and out. */ | |
6390 | ||
6391 | struct queue_iter_param | |
6392 | { | |
6393 | void *input; | |
6394 | struct stop_reply *output; | |
6395 | }; | |
6396 | ||
85ad3aaf | 6397 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6398 | the pid of the process that owns the threads we want to check, or |
6399 | -1 if we want to check all threads. */ | |
6400 | ||
6401 | static int | |
6402 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6403 | ptid_t thread_ptid) | |
6404 | { | |
6405 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6406 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6407 | { | |
6408 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6409 | return 1; | |
6410 | } | |
6411 | ||
6412 | return 0; | |
6413 | } | |
6414 | ||
85ad3aaf PA |
6415 | /* Return the thread's pending status used to determine whether the |
6416 | thread is a fork parent stopped at a fork event. */ | |
6417 | ||
6418 | static struct target_waitstatus * | |
6419 | thread_pending_fork_status (struct thread_info *thread) | |
6420 | { | |
6421 | if (thread->suspend.waitstatus_pending_p) | |
6422 | return &thread->suspend.waitstatus; | |
6423 | else | |
6424 | return &thread->pending_follow; | |
6425 | } | |
6426 | ||
6427 | /* Determine if THREAD is a pending fork parent thread. */ | |
6428 | ||
6429 | static int | |
6430 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6431 | { | |
6432 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6433 | int pid = -1; | |
6434 | ||
6435 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6436 | } | |
6437 | ||
cbb8991c DB |
6438 | /* Check whether EVENT is a fork event, and if it is, remove the |
6439 | fork child from the context list passed in DATA. */ | |
6440 | ||
6441 | static int | |
6442 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6443 | QUEUE_ITER (stop_reply_p) *iter, | |
6444 | stop_reply_p event, | |
6445 | void *data) | |
6446 | { | |
19ba03f4 SM |
6447 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6448 | struct threads_listing_context *context | |
6449 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6450 | |
6451 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6452 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6453 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
21fe1c75 | 6454 | context->remove_thread (event->ws.value.related_pid); |
cbb8991c DB |
6455 | |
6456 | return 1; | |
6457 | } | |
6458 | ||
6459 | /* If CONTEXT contains any fork child threads that have not been | |
6460 | reported yet, remove them from the CONTEXT list. If such a | |
6461 | thread exists it is because we are stopped at a fork catchpoint | |
6462 | and have not yet called follow_fork, which will set up the | |
6463 | host-side data structures for the new process. */ | |
6464 | ||
6465 | static void | |
6466 | remove_new_fork_children (struct threads_listing_context *context) | |
6467 | { | |
6468 | struct thread_info * thread; | |
6469 | int pid = -1; | |
6470 | struct notif_client *notif = ¬if_client_stop; | |
6471 | struct queue_iter_param param; | |
6472 | ||
6473 | /* For any threads stopped at a fork event, remove the corresponding | |
6474 | fork child threads from the CONTEXT list. */ | |
6475 | ALL_NON_EXITED_THREADS (thread) | |
6476 | { | |
85ad3aaf | 6477 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6478 | |
6479 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 6480 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
6481 | } |
6482 | ||
6483 | /* Check for any pending fork events (not reported or processed yet) | |
6484 | in process PID and remove those fork child threads from the | |
6485 | CONTEXT list as well. */ | |
6486 | remote_notif_get_pending_events (notif); | |
6487 | param.input = context; | |
6488 | param.output = NULL; | |
6489 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6490 | remove_child_of_pending_fork, ¶m); | |
6491 | } | |
6492 | ||
85ad3aaf PA |
6493 | /* Check whether EVENT would prevent a global or process wildcard |
6494 | vCont action. */ | |
6495 | ||
6496 | static int | |
6497 | check_pending_event_prevents_wildcard_vcont_callback | |
6498 | (QUEUE (stop_reply_p) *q, | |
6499 | QUEUE_ITER (stop_reply_p) *iter, | |
6500 | stop_reply_p event, | |
6501 | void *data) | |
6502 | { | |
6503 | struct inferior *inf; | |
6504 | int *may_global_wildcard_vcont = (int *) data; | |
6505 | ||
6506 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6507 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6508 | return 1; | |
6509 | ||
6510 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6511 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6512 | *may_global_wildcard_vcont = 0; | |
6513 | ||
6514 | inf = find_inferior_ptid (event->ptid); | |
6515 | ||
6516 | /* This may be the first time we heard about this process. | |
6517 | Regardless, we must not do a global wildcard resume, otherwise | |
6518 | we'd resume this process too. */ | |
6519 | *may_global_wildcard_vcont = 0; | |
6520 | if (inf != NULL) | |
089354bb | 6521 | get_remote_inferior (inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6522 | |
6523 | return 1; | |
6524 | } | |
6525 | ||
6526 | /* Check whether any event pending in the vStopped queue would prevent | |
6527 | a global or process wildcard vCont action. Clear | |
6528 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6529 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6530 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6531 | ||
6532 | static void | |
6533 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6534 | { | |
6535 | struct notif_client *notif = ¬if_client_stop; | |
6536 | ||
6537 | remote_notif_get_pending_events (notif); | |
6538 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6539 | check_pending_event_prevents_wildcard_vcont_callback, | |
6540 | may_global_wildcard); | |
6541 | } | |
6542 | ||
f48ff2a7 YQ |
6543 | /* Remove stop replies in the queue if its pid is equal to the given |
6544 | inferior's pid. */ | |
722247f1 YQ |
6545 | |
6546 | static int | |
f48ff2a7 YQ |
6547 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6548 | QUEUE_ITER (stop_reply_p) *iter, | |
6549 | stop_reply_p event, | |
6550 | void *data) | |
722247f1 | 6551 | { |
19ba03f4 SM |
6552 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6553 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6554 | |
f48ff2a7 | 6555 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6556 | { |
6557 | stop_reply_xfree (event); | |
6558 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6559 | } | |
6560 | ||
6561 | return 1; | |
6562 | } | |
6563 | ||
f48ff2a7 | 6564 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6565 | |
74531fed | 6566 | static void |
5f4cf0bb | 6567 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6568 | { |
722247f1 | 6569 | struct queue_iter_param param; |
f48ff2a7 YQ |
6570 | struct stop_reply *reply; |
6571 | struct remote_state *rs = get_remote_state (); | |
6572 | struct remote_notif_state *rns = rs->notif_state; | |
6573 | ||
6574 | /* This function can be notified when an inferior exists. When the | |
6575 | target is not remote, the notification state is NULL. */ | |
6576 | if (rs->remote_desc == NULL) | |
6577 | return; | |
6578 | ||
6579 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6580 | |
74531fed | 6581 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6582 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6583 | { |
722247f1 | 6584 | stop_reply_xfree (reply); |
f48ff2a7 | 6585 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6586 | } |
c906108c | 6587 | |
722247f1 YQ |
6588 | param.input = inf; |
6589 | param.output = NULL; | |
74531fed PA |
6590 | /* Discard the stop replies we have already pulled with |
6591 | vStopped. */ | |
722247f1 | 6592 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6593 | remove_stop_reply_for_inferior, ¶m); |
6594 | } | |
6595 | ||
bcc75809 YQ |
6596 | /* If its remote state is equal to the given remote state, |
6597 | remove EVENT from the stop reply queue. */ | |
6598 | ||
6599 | static int | |
6600 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6601 | QUEUE_ITER (stop_reply_p) *iter, | |
6602 | stop_reply_p event, | |
6603 | void *data) | |
6604 | { | |
19ba03f4 SM |
6605 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6606 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6607 | |
6608 | if (event->rs == rs) | |
6609 | { | |
6610 | stop_reply_xfree (event); | |
6611 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6612 | } | |
6613 | ||
6614 | return 1; | |
6615 | } | |
6616 | ||
6617 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6618 | |
6619 | static void | |
bcc75809 | 6620 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6621 | { |
6622 | struct queue_iter_param param; | |
6623 | ||
bcc75809 | 6624 | param.input = rs; |
f48ff2a7 YQ |
6625 | param.output = NULL; |
6626 | /* Discard the stop replies we have already pulled with | |
6627 | vStopped. */ | |
6628 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6629 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6630 | } |
74531fed | 6631 | |
722247f1 YQ |
6632 | /* A parameter to pass data in and out. */ |
6633 | ||
6634 | static int | |
6635 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6636 | QUEUE_ITER (stop_reply_p) *iter, | |
6637 | stop_reply_p event, | |
6638 | void *data) | |
6639 | { | |
19ba03f4 SM |
6640 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6641 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6642 | |
6643 | if (ptid_match (event->ptid, *ptid)) | |
6644 | { | |
6645 | param->output = event; | |
6646 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6647 | return 0; | |
c8e38a49 | 6648 | } |
722247f1 YQ |
6649 | |
6650 | return 1; | |
74531fed | 6651 | } |
43ff13b4 | 6652 | |
722247f1 YQ |
6653 | /* Remove the first reply in 'stop_reply_queue' which matches |
6654 | PTID. */ | |
2e9f7625 | 6655 | |
722247f1 YQ |
6656 | static struct stop_reply * |
6657 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6658 | { |
722247f1 YQ |
6659 | struct queue_iter_param param; |
6660 | ||
6661 | param.input = &ptid; | |
6662 | param.output = NULL; | |
6663 | ||
6664 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6665 | remote_notif_remove_once_on_match, ¶m); | |
6666 | if (notif_debug) | |
6667 | fprintf_unfiltered (gdb_stdlog, | |
6668 | "notif: discard queued event: 'Stop' in %s\n", | |
6669 | target_pid_to_str (ptid)); | |
a744cf53 | 6670 | |
722247f1 | 6671 | return param.output; |
74531fed | 6672 | } |
75c99385 | 6673 | |
74531fed PA |
6674 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6675 | remove it from the queue, and return it. Returns NULL if none is | |
6676 | found. If there are still queued events left to process, tell the | |
6677 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6678 | |
74531fed PA |
6679 | static struct stop_reply * |
6680 | queued_stop_reply (ptid_t ptid) | |
6681 | { | |
722247f1 | 6682 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6683 | |
722247f1 | 6684 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6685 | /* There's still at least an event left. */ |
6686 | mark_async_event_handler (remote_async_inferior_event_token); | |
6687 | ||
722247f1 | 6688 | return r; |
74531fed PA |
6689 | } |
6690 | ||
6691 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6692 | know that we now have at least one queued event left to pass to the | |
6693 | core side, tell the event loop to get back to target_wait soon. */ | |
6694 | ||
6695 | static void | |
6696 | push_stop_reply (struct stop_reply *new_event) | |
6697 | { | |
722247f1 | 6698 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6699 | |
722247f1 YQ |
6700 | if (notif_debug) |
6701 | fprintf_unfiltered (gdb_stdlog, | |
6702 | "notif: push 'Stop' %s to queue %d\n", | |
6703 | target_pid_to_str (new_event->ptid), | |
6704 | QUEUE_length (stop_reply_p, | |
6705 | stop_reply_queue)); | |
74531fed PA |
6706 | |
6707 | mark_async_event_handler (remote_async_inferior_event_token); | |
6708 | } | |
6709 | ||
722247f1 YQ |
6710 | static int |
6711 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6712 | QUEUE_ITER (stop_reply_p) *iter, | |
6713 | struct stop_reply *event, | |
6714 | void *data) | |
6715 | { | |
19ba03f4 | 6716 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6717 | |
6718 | return !(ptid_equal (*ptid, event->ptid) | |
6719 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6720 | } | |
6721 | ||
74531fed PA |
6722 | /* Returns true if we have a stop reply for PTID. */ |
6723 | ||
6724 | static int | |
6725 | peek_stop_reply (ptid_t ptid) | |
6726 | { | |
722247f1 YQ |
6727 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6728 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6729 | } |
6730 | ||
26d56a93 SL |
6731 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6732 | starting with P and ending with PEND matches PREFIX. */ | |
6733 | ||
6734 | static int | |
6735 | strprefix (const char *p, const char *pend, const char *prefix) | |
6736 | { | |
6737 | for ( ; p < pend; p++, prefix++) | |
6738 | if (*p != *prefix) | |
6739 | return 0; | |
6740 | return *prefix == '\0'; | |
6741 | } | |
6742 | ||
74531fed PA |
6743 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6744 | result is stored in EVENT, or throws an error. */ | |
6745 | ||
6746 | static void | |
6747 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6748 | { | |
5cd63fda | 6749 | remote_arch_state *rsa = NULL; |
74531fed | 6750 | ULONGEST addr; |
256642e8 | 6751 | const char *p; |
94585166 | 6752 | int skipregs = 0; |
74531fed PA |
6753 | |
6754 | event->ptid = null_ptid; | |
bcc75809 | 6755 | event->rs = get_remote_state (); |
74531fed PA |
6756 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6757 | event->ws.value.integer = 0; | |
f7e6eed5 | 6758 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6759 | event->regcache = NULL; |
dc146f7c | 6760 | event->core = -1; |
74531fed PA |
6761 | |
6762 | switch (buf[0]) | |
6763 | { | |
6764 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6765 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6766 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6767 | ss = signal number | |
6768 | n... = register number | |
6769 | r... = register contents | |
6770 | */ | |
6771 | ||
6772 | p = &buf[3]; /* after Txx */ | |
6773 | while (*p) | |
6774 | { | |
256642e8 | 6775 | const char *p1; |
cea39f65 | 6776 | int fieldsize; |
43ff13b4 | 6777 | |
1f10ba14 PA |
6778 | p1 = strchr (p, ':'); |
6779 | if (p1 == NULL) | |
6780 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6781 | Packet: '%s'\n"), | |
6782 | p, buf); | |
6783 | if (p == p1) | |
6784 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6785 | Packet: '%s'\n"), | |
6786 | p, buf); | |
3c3bea1c | 6787 | |
1f10ba14 PA |
6788 | /* Some "registers" are actually extended stop information. |
6789 | Note if you're adding a new entry here: GDB 7.9 and | |
6790 | earlier assume that all register "numbers" that start | |
6791 | with an hex digit are real register numbers. Make sure | |
6792 | the server only sends such a packet if it knows the | |
6793 | client understands it. */ | |
c8e38a49 | 6794 | |
26d56a93 | 6795 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6796 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6797 | else if (strprefix (p, p1, "syscall_entry")) |
6798 | { | |
6799 | ULONGEST sysno; | |
6800 | ||
6801 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6802 | p = unpack_varlen_hex (++p1, &sysno); | |
6803 | event->ws.value.syscall_number = (int) sysno; | |
6804 | } | |
6805 | else if (strprefix (p, p1, "syscall_return")) | |
6806 | { | |
6807 | ULONGEST sysno; | |
6808 | ||
6809 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6810 | p = unpack_varlen_hex (++p1, &sysno); | |
6811 | event->ws.value.syscall_number = (int) sysno; | |
6812 | } | |
26d56a93 SL |
6813 | else if (strprefix (p, p1, "watch") |
6814 | || strprefix (p, p1, "rwatch") | |
6815 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6816 | { |
f7e6eed5 | 6817 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6818 | p = unpack_varlen_hex (++p1, &addr); |
6819 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6820 | } |
26d56a93 | 6821 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6822 | { |
6823 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6824 | ||
6825 | /* Make sure the stub doesn't forget to indicate support | |
6826 | with qSupported. */ | |
6827 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6828 | error (_("Unexpected swbreak stop reason")); | |
6829 | ||
6830 | /* The value part is documented as "must be empty", | |
6831 | though we ignore it, in case we ever decide to make | |
6832 | use of it in a backward compatible way. */ | |
8424cc97 | 6833 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6834 | } |
26d56a93 | 6835 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6836 | { |
6837 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6838 | ||
6839 | /* Make sure the stub doesn't forget to indicate support | |
6840 | with qSupported. */ | |
6841 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6842 | error (_("Unexpected hwbreak stop reason")); | |
6843 | ||
6844 | /* See above. */ | |
8424cc97 | 6845 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6846 | } |
26d56a93 | 6847 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6848 | { |
1f10ba14 | 6849 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 6850 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6851 | } |
26d56a93 | 6852 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6853 | { |
6854 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6855 | /* p1 will indicate "begin" or "end", but it makes | |
6856 | no difference for now, so ignore it. */ | |
8424cc97 | 6857 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6858 | } |
26d56a93 | 6859 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6860 | { |
6861 | ULONGEST c; | |
a744cf53 | 6862 | |
1f10ba14 PA |
6863 | p = unpack_varlen_hex (++p1, &c); |
6864 | event->core = c; | |
cea39f65 | 6865 | } |
26d56a93 | 6866 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6867 | { |
6868 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6869 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6870 | } | |
26d56a93 | 6871 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6872 | { |
6873 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6874 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6875 | } | |
26d56a93 | 6876 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6877 | { |
6878 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 6879 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 6880 | } |
6ab24463 | 6881 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6882 | { |
6883 | ULONGEST ignored; | |
6884 | char pathname[PATH_MAX]; | |
6885 | int pathlen; | |
6886 | ||
6887 | /* Determine the length of the execd pathname. */ | |
6888 | p = unpack_varlen_hex (++p1, &ignored); | |
6889 | pathlen = (p - p1) / 2; | |
6890 | ||
6891 | /* Save the pathname for event reporting and for | |
6892 | the next run command. */ | |
6893 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6894 | pathname[pathlen] = '\0'; | |
6895 | ||
6896 | /* This is freed during event handling. */ | |
6897 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6898 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6899 | ||
6900 | /* Skip the registers included in this packet, since | |
6901 | they may be for an architecture different from the | |
6902 | one used by the original program. */ | |
6903 | skipregs = 1; | |
6904 | } | |
65706a29 PA |
6905 | else if (strprefix (p, p1, "create")) |
6906 | { | |
6907 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 6908 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 6909 | } |
cea39f65 MS |
6910 | else |
6911 | { | |
1f10ba14 | 6912 | ULONGEST pnum; |
256642e8 | 6913 | const char *p_temp; |
1f10ba14 | 6914 | |
94585166 DB |
6915 | if (skipregs) |
6916 | { | |
8424cc97 | 6917 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
6918 | p++; |
6919 | continue; | |
6920 | } | |
6921 | ||
1f10ba14 PA |
6922 | /* Maybe a real ``P'' register number. */ |
6923 | p_temp = unpack_varlen_hex (p, &pnum); | |
6924 | /* If the first invalid character is the colon, we got a | |
6925 | register number. Otherwise, it's an unknown stop | |
6926 | reason. */ | |
6927 | if (p_temp == p1) | |
6928 | { | |
5cd63fda PA |
6929 | /* If we haven't parsed the event's thread yet, find |
6930 | it now, in order to find the architecture of the | |
6931 | reported expedited registers. */ | |
6932 | if (event->ptid == null_ptid) | |
6933 | { | |
6934 | const char *thr = strstr (p1 + 1, ";thread:"); | |
6935 | if (thr != NULL) | |
6936 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
6937 | NULL); | |
6938 | else | |
3cada740 PA |
6939 | { |
6940 | /* Either the current thread hasn't changed, | |
6941 | or the inferior is not multi-threaded. | |
6942 | The event must be for the thread we last | |
6943 | set as (or learned as being) current. */ | |
6944 | event->ptid = event->rs->general_thread; | |
6945 | } | |
5cd63fda PA |
6946 | } |
6947 | ||
6948 | if (rsa == NULL) | |
6949 | { | |
6950 | inferior *inf = (event->ptid == null_ptid | |
6951 | ? NULL | |
6952 | : find_inferior_ptid (event->ptid)); | |
6953 | /* If this is the first time we learn anything | |
6954 | about this process, skip the registers | |
6955 | included in this packet, since we don't yet | |
6956 | know which architecture to use to parse them. | |
6957 | We'll determine the architecture later when | |
6958 | we process the stop reply and retrieve the | |
6959 | target description, via | |
6960 | remote_notice_new_inferior -> | |
6961 | post_create_inferior. */ | |
6962 | if (inf == NULL) | |
6963 | { | |
6964 | p = strchrnul (p1 + 1, ';'); | |
6965 | p++; | |
6966 | continue; | |
6967 | } | |
6968 | ||
6969 | event->arch = inf->gdbarch; | |
6970 | rsa = get_remote_arch_state (event->arch); | |
6971 | } | |
6972 | ||
6973 | packet_reg *reg | |
6974 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 6975 | cached_reg_t cached_reg; |
43ff13b4 | 6976 | |
1f10ba14 PA |
6977 | if (reg == NULL) |
6978 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6979 | Packet: '%s'\n"), |
1f10ba14 | 6980 | hex_string (pnum), p, buf); |
c8e38a49 | 6981 | |
1f10ba14 | 6982 | cached_reg.num = reg->regnum; |
d1dff226 | 6983 | cached_reg.data = (gdb_byte *) |
5cd63fda | 6984 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 6985 | |
1f10ba14 PA |
6986 | p = p1 + 1; |
6987 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 6988 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 6989 | p += 2 * fieldsize; |
5cd63fda | 6990 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 6991 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 6992 | |
1f10ba14 PA |
6993 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6994 | } | |
6995 | else | |
6996 | { | |
6997 | /* Not a number. Silently skip unknown optional | |
6998 | info. */ | |
8424cc97 | 6999 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7000 | } |
cea39f65 | 7001 | } |
c8e38a49 | 7002 | |
cea39f65 MS |
7003 | if (*p != ';') |
7004 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7005 | buf, p); | |
7006 | ++p; | |
7007 | } | |
5b5596ff PA |
7008 | |
7009 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7010 | break; | |
7011 | ||
c8e38a49 PA |
7012 | /* fall through */ |
7013 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7014 | { |
7015 | int sig; | |
7016 | ||
7017 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7018 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7019 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7020 | event->ws.value.sig = (enum gdb_signal) sig; | |
7021 | else | |
7022 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7023 | } | |
c8e38a49 | 7024 | break; |
65706a29 PA |
7025 | case 'w': /* Thread exited. */ |
7026 | { | |
256642e8 | 7027 | const char *p; |
65706a29 PA |
7028 | ULONGEST value; |
7029 | ||
7030 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7031 | p = unpack_varlen_hex (&buf[1], &value); | |
7032 | event->ws.value.integer = value; | |
7033 | if (*p != ';') | |
7034 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7035 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7036 | break; |
7037 | } | |
c8e38a49 PA |
7038 | case 'W': /* Target exited. */ |
7039 | case 'X': | |
7040 | { | |
256642e8 | 7041 | const char *p; |
c8e38a49 PA |
7042 | int pid; |
7043 | ULONGEST value; | |
82f73884 | 7044 | |
c8e38a49 PA |
7045 | /* GDB used to accept only 2 hex chars here. Stubs should |
7046 | only send more if they detect GDB supports multi-process | |
7047 | support. */ | |
7048 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7049 | |
c8e38a49 PA |
7050 | if (buf[0] == 'W') |
7051 | { | |
7052 | /* The remote process exited. */ | |
74531fed PA |
7053 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7054 | event->ws.value.integer = value; | |
c8e38a49 PA |
7055 | } |
7056 | else | |
7057 | { | |
7058 | /* The remote process exited with a signal. */ | |
74531fed | 7059 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7060 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7061 | event->ws.value.sig = (enum gdb_signal) value; | |
7062 | else | |
7063 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7064 | } |
82f73884 | 7065 | |
c8e38a49 PA |
7066 | /* If no process is specified, assume inferior_ptid. */ |
7067 | pid = ptid_get_pid (inferior_ptid); | |
7068 | if (*p == '\0') | |
7069 | ; | |
7070 | else if (*p == ';') | |
7071 | { | |
7072 | p++; | |
7073 | ||
0b24eb2d | 7074 | if (*p == '\0') |
82f73884 | 7075 | ; |
61012eef | 7076 | else if (startswith (p, "process:")) |
82f73884 | 7077 | { |
c8e38a49 | 7078 | ULONGEST upid; |
a744cf53 | 7079 | |
c8e38a49 PA |
7080 | p += sizeof ("process:") - 1; |
7081 | unpack_varlen_hex (p, &upid); | |
7082 | pid = upid; | |
82f73884 PA |
7083 | } |
7084 | else | |
7085 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7086 | } |
c8e38a49 PA |
7087 | else |
7088 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7089 | event->ptid = pid_to_ptid (pid); |
7090 | } | |
7091 | break; | |
f2faf941 PA |
7092 | case 'N': |
7093 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7094 | event->ptid = minus_one_ptid; | |
7095 | break; | |
74531fed PA |
7096 | } |
7097 | ||
6efcd9a8 | 7098 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7099 | error (_("No process or thread specified in stop reply: %s"), buf); |
7100 | } | |
7101 | ||
722247f1 YQ |
7102 | /* When the stub wants to tell GDB about a new notification reply, it |
7103 | sends a notification (%Stop, for example). Those can come it at | |
7104 | any time, hence, we have to make sure that any pending | |
7105 | putpkt/getpkt sequence we're making is finished, before querying | |
7106 | the stub for more events with the corresponding ack command | |
7107 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7108 | immediately upon receiving the notification, something like this | |
7109 | could happen: | |
74531fed PA |
7110 | |
7111 | 1.1) --> Hg 1 | |
7112 | 1.2) <-- OK | |
7113 | 1.3) --> g | |
7114 | 1.4) <-- %Stop | |
7115 | 1.5) --> vStopped | |
7116 | 1.6) <-- (registers reply to step #1.3) | |
7117 | ||
7118 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7119 | query. | |
7120 | ||
796cb314 | 7121 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7122 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7123 | doing whatever we were doing: | |
7124 | ||
7125 | 2.1) --> Hg 1 | |
7126 | 2.2) <-- OK | |
7127 | 2.3) --> g | |
7128 | 2.4) <-- %Stop | |
7129 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7130 | 2.5) <-- (registers reply to step #2.3) | |
7131 | ||
7132 | Eventualy after step #2.5, we return to the event loop, which | |
7133 | notices there's an event on the | |
7134 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7135 | associated callback --- the function below. At this point, we're | |
7136 | always safe to start a vStopped sequence. : | |
7137 | ||
7138 | 2.6) --> vStopped | |
7139 | 2.7) <-- T05 thread:2 | |
7140 | 2.8) --> vStopped | |
7141 | 2.9) --> OK | |
7142 | */ | |
7143 | ||
722247f1 YQ |
7144 | void |
7145 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7146 | { |
7147 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7148 | |
f48ff2a7 | 7149 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7150 | { |
722247f1 YQ |
7151 | if (notif_debug) |
7152 | fprintf_unfiltered (gdb_stdlog, | |
7153 | "notif: process: '%s' ack pending event\n", | |
7154 | nc->name); | |
74531fed | 7155 | |
722247f1 | 7156 | /* acknowledge */ |
f48ff2a7 YQ |
7157 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7158 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7159 | |
7160 | while (1) | |
7161 | { | |
7162 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7163 | if (strcmp (rs->buf, "OK") == 0) | |
7164 | break; | |
7165 | else | |
722247f1 | 7166 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7167 | } |
7168 | } | |
722247f1 YQ |
7169 | else |
7170 | { | |
7171 | if (notif_debug) | |
7172 | fprintf_unfiltered (gdb_stdlog, | |
7173 | "notif: process: '%s' no pending reply\n", | |
7174 | nc->name); | |
7175 | } | |
74531fed PA |
7176 | } |
7177 | ||
74531fed PA |
7178 | /* Called when it is decided that STOP_REPLY holds the info of the |
7179 | event that is to be returned to the core. This function always | |
7180 | destroys STOP_REPLY. */ | |
7181 | ||
7182 | static ptid_t | |
7183 | process_stop_reply (struct stop_reply *stop_reply, | |
7184 | struct target_waitstatus *status) | |
7185 | { | |
7186 | ptid_t ptid; | |
7187 | ||
7188 | *status = stop_reply->ws; | |
7189 | ptid = stop_reply->ptid; | |
7190 | ||
7191 | /* If no thread/process was reported by the stub, assume the current | |
7192 | inferior. */ | |
7193 | if (ptid_equal (ptid, null_ptid)) | |
7194 | ptid = inferior_ptid; | |
7195 | ||
5f3563ea | 7196 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7197 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7198 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7199 | { |
5f3563ea PA |
7200 | /* Expedited registers. */ |
7201 | if (stop_reply->regcache) | |
7202 | { | |
217f1f79 | 7203 | struct regcache *regcache |
5cd63fda | 7204 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea PA |
7205 | cached_reg_t *reg; |
7206 | int ix; | |
7207 | ||
7208 | for (ix = 0; | |
d1dff226 | 7209 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7210 | ix++) |
d1dff226 | 7211 | { |
217f1f79 | 7212 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7213 | xfree (reg->data); |
7214 | } | |
7215 | ||
5f3563ea PA |
7216 | VEC_free (cached_reg_t, stop_reply->regcache); |
7217 | } | |
74531fed | 7218 | |
1941c569 | 7219 | remote_notice_new_inferior (ptid, 0); |
7aabaf9d | 7220 | remote_thread_info *remote_thr = get_remote_thread_info (ptid); |
799a2abe PA |
7221 | remote_thr->core = stop_reply->core; |
7222 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7223 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7224 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7225 | } |
7226 | ||
74531fed PA |
7227 | stop_reply_xfree (stop_reply); |
7228 | return ptid; | |
7229 | } | |
7230 | ||
7231 | /* The non-stop mode version of target_wait. */ | |
7232 | ||
7233 | static ptid_t | |
47608cb1 | 7234 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7235 | { |
7236 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7237 | struct stop_reply *stop_reply; |
7238 | int ret; | |
fee9eda9 | 7239 | int is_notif = 0; |
74531fed PA |
7240 | |
7241 | /* If in non-stop mode, get out of getpkt even if a | |
7242 | notification is received. */ | |
7243 | ||
7244 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7245 | 0 /* forever */, &is_notif); |
74531fed PA |
7246 | while (1) |
7247 | { | |
fee9eda9 | 7248 | if (ret != -1 && !is_notif) |
74531fed PA |
7249 | switch (rs->buf[0]) |
7250 | { | |
7251 | case 'E': /* Error of some sort. */ | |
7252 | /* We're out of sync with the target now. Did it continue | |
7253 | or not? We can't tell which thread it was in non-stop, | |
7254 | so just ignore this. */ | |
7255 | warning (_("Remote failure reply: %s"), rs->buf); | |
7256 | break; | |
7257 | case 'O': /* Console output. */ | |
7258 | remote_console_output (rs->buf + 1); | |
7259 | break; | |
7260 | default: | |
7261 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7262 | break; | |
7263 | } | |
7264 | ||
7265 | /* Acknowledge a pending stop reply that may have arrived in the | |
7266 | mean time. */ | |
f48ff2a7 | 7267 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7268 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7269 | |
7270 | /* If indeed we noticed a stop reply, we're done. */ | |
7271 | stop_reply = queued_stop_reply (ptid); | |
7272 | if (stop_reply != NULL) | |
7273 | return process_stop_reply (stop_reply, status); | |
7274 | ||
47608cb1 | 7275 | /* Still no event. If we're just polling for an event, then |
74531fed | 7276 | return to the event loop. */ |
47608cb1 | 7277 | if (options & TARGET_WNOHANG) |
74531fed PA |
7278 | { |
7279 | status->kind = TARGET_WAITKIND_IGNORE; | |
7280 | return minus_one_ptid; | |
7281 | } | |
7282 | ||
47608cb1 | 7283 | /* Otherwise do a blocking wait. */ |
74531fed | 7284 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7285 | 1 /* forever */, &is_notif); |
74531fed PA |
7286 | } |
7287 | } | |
7288 | ||
7289 | /* Wait until the remote machine stops, then return, storing status in | |
7290 | STATUS just as `wait' would. */ | |
7291 | ||
7292 | static ptid_t | |
47608cb1 | 7293 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7294 | { |
7295 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7296 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7297 | char *buf; |
74531fed PA |
7298 | struct stop_reply *stop_reply; |
7299 | ||
47608cb1 PA |
7300 | again: |
7301 | ||
74531fed PA |
7302 | status->kind = TARGET_WAITKIND_IGNORE; |
7303 | status->value.integer = 0; | |
7304 | ||
7305 | stop_reply = queued_stop_reply (ptid); | |
7306 | if (stop_reply != NULL) | |
7307 | return process_stop_reply (stop_reply, status); | |
7308 | ||
7309 | if (rs->cached_wait_status) | |
7310 | /* Use the cached wait status, but only once. */ | |
7311 | rs->cached_wait_status = 0; | |
7312 | else | |
7313 | { | |
7314 | int ret; | |
722247f1 | 7315 | int is_notif; |
567420d1 PA |
7316 | int forever = ((options & TARGET_WNOHANG) == 0 |
7317 | && wait_forever_enabled_p); | |
7318 | ||
7319 | if (!rs->waiting_for_stop_reply) | |
7320 | { | |
7321 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7322 | return minus_one_ptid; | |
7323 | } | |
74531fed | 7324 | |
74531fed PA |
7325 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7326 | _never_ wait for ever -> test on target_is_async_p(). | |
7327 | However, before we do that we need to ensure that the caller | |
7328 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7329 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7330 | forever, &is_notif); |
722247f1 YQ |
7331 | |
7332 | /* GDB gets a notification. Return to core as this event is | |
7333 | not interesting. */ | |
7334 | if (ret != -1 && is_notif) | |
7335 | return minus_one_ptid; | |
567420d1 PA |
7336 | |
7337 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7338 | return minus_one_ptid; | |
74531fed PA |
7339 | } |
7340 | ||
7341 | buf = rs->buf; | |
7342 | ||
3a29589a DJ |
7343 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7344 | an 'F' or 'O' packet. */ | |
7345 | if (buf[0] != 'F' && buf[0] != 'O') | |
7346 | rs->ctrlc_pending_p = 0; | |
7347 | ||
74531fed PA |
7348 | switch (buf[0]) |
7349 | { | |
7350 | case 'E': /* Error of some sort. */ | |
7351 | /* We're out of sync with the target now. Did it continue or | |
7352 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7353 | rs->waiting_for_stop_reply = 0; |
7354 | ||
74531fed PA |
7355 | warning (_("Remote failure reply: %s"), buf); |
7356 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7357 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7358 | break; |
7359 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7360 | /* GDB may access the inferior memory while handling the File-I/O |
7361 | request, but we don't want GDB accessing memory while waiting | |
7362 | for a stop reply. See the comments in putpkt_binary. Set | |
7363 | waiting_for_stop_reply to 0 temporarily. */ | |
7364 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7365 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7366 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7367 | /* GDB handled the File-I/O request, and the target is running |
7368 | again. Keep waiting for events. */ | |
7369 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7370 | break; |
f2faf941 | 7371 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7372 | { |
29090fb6 LM |
7373 | struct stop_reply *stop_reply; |
7374 | ||
7375 | /* There is a stop reply to handle. */ | |
7376 | rs->waiting_for_stop_reply = 0; | |
7377 | ||
7378 | stop_reply | |
722247f1 YQ |
7379 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7380 | rs->buf); | |
74531fed | 7381 | |
74531fed | 7382 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7383 | break; |
7384 | } | |
7385 | case 'O': /* Console output. */ | |
7386 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7387 | break; |
7388 | case '\0': | |
b73be471 | 7389 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7390 | { |
7391 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7392 | remote system doesn't support it. */ | |
223ffa71 | 7393 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7394 | printf_filtered |
7395 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7396 | gdb_signal_to_name (rs->last_sent_signal)); |
7397 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7398 | target_terminal::inferior (); |
c8e38a49 | 7399 | |
f5c4fcd9 TT |
7400 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7401 | putpkt (buf); | |
c8e38a49 | 7402 | break; |
43ff13b4 | 7403 | } |
c8e38a49 PA |
7404 | /* else fallthrough */ |
7405 | default: | |
7406 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7407 | break; |
43ff13b4 | 7408 | } |
c8e38a49 | 7409 | |
f2faf941 PA |
7410 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7411 | return minus_one_ptid; | |
7412 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7413 | { |
7414 | /* Nothing interesting happened. If we're doing a non-blocking | |
7415 | poll, we're done. Otherwise, go back to waiting. */ | |
7416 | if (options & TARGET_WNOHANG) | |
7417 | return minus_one_ptid; | |
7418 | else | |
7419 | goto again; | |
7420 | } | |
74531fed PA |
7421 | else if (status->kind != TARGET_WAITKIND_EXITED |
7422 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7423 | { |
7424 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7425 | record_currthread (rs, event_ptid); |
82f73884 PA |
7426 | else |
7427 | event_ptid = inferior_ptid; | |
43ff13b4 | 7428 | } |
74531fed PA |
7429 | else |
7430 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7431 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7432 | |
82f73884 | 7433 | return event_ptid; |
43ff13b4 JM |
7434 | } |
7435 | ||
74531fed PA |
7436 | /* Wait until the remote machine stops, then return, storing status in |
7437 | STATUS just as `wait' would. */ | |
7438 | ||
c8e38a49 | 7439 | static ptid_t |
117de6a9 | 7440 | remote_wait (struct target_ops *ops, |
47608cb1 | 7441 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7442 | { |
7443 | ptid_t event_ptid; | |
7444 | ||
6efcd9a8 | 7445 | if (target_is_non_stop_p ()) |
47608cb1 | 7446 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7447 | else |
47608cb1 | 7448 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7449 | |
d9d41e78 | 7450 | if (target_is_async_p ()) |
c8e38a49 | 7451 | { |
74531fed PA |
7452 | /* If there are are events left in the queue tell the event loop |
7453 | to return here. */ | |
722247f1 | 7454 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7455 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7456 | } |
c8e38a49 PA |
7457 | |
7458 | return event_ptid; | |
7459 | } | |
7460 | ||
74ca34ce | 7461 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7462 | |
b96ec7ac | 7463 | static int |
56be3814 | 7464 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7465 | { |
ac7936df | 7466 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7467 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7468 | char *buf, *p; |
9890e433 | 7469 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7470 | int i; |
7471 | ||
4082afcc | 7472 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7473 | return 0; |
7474 | ||
7475 | if (reg->pnum == -1) | |
7476 | return 0; | |
7477 | ||
2e9f7625 | 7478 | p = rs->buf; |
fcad0fa4 | 7479 | *p++ = 'p'; |
74ca34ce | 7480 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7481 | *p++ = '\0'; |
1f4437a4 MS |
7482 | putpkt (rs->buf); |
7483 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7484 | |
2e9f7625 DJ |
7485 | buf = rs->buf; |
7486 | ||
74ca34ce DJ |
7487 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7488 | { | |
7489 | case PACKET_OK: | |
7490 | break; | |
7491 | case PACKET_UNKNOWN: | |
7492 | return 0; | |
7493 | case PACKET_ERROR: | |
27a9c0bf | 7494 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7495 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7496 | reg->regnum), |
7497 | buf); | |
74ca34ce | 7498 | } |
3f9a994c JB |
7499 | |
7500 | /* If this register is unfetchable, tell the regcache. */ | |
7501 | if (buf[0] == 'x') | |
8480adf2 | 7502 | { |
56be3814 | 7503 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7504 | return 1; |
b96ec7ac | 7505 | } |
b96ec7ac | 7506 | |
3f9a994c JB |
7507 | /* Otherwise, parse and supply the value. */ |
7508 | p = buf; | |
7509 | i = 0; | |
7510 | while (p[0] != 0) | |
7511 | { | |
7512 | if (p[1] == 0) | |
74ca34ce | 7513 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7514 | |
7515 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7516 | p += 2; | |
7517 | } | |
56be3814 | 7518 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7519 | return 1; |
b96ec7ac AC |
7520 | } |
7521 | ||
74ca34ce DJ |
7522 | /* Fetch the registers included in the target's 'g' packet. */ |
7523 | ||
29709017 DJ |
7524 | static int |
7525 | send_g_packet (void) | |
c906108c | 7526 | { |
d01949b6 | 7527 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7528 | int buf_len; |
c906108c | 7529 | |
bba74b36 | 7530 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7531 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7532 | |
29709017 DJ |
7533 | /* We can get out of synch in various cases. If the first character |
7534 | in the buffer is not a hex character, assume that has happened | |
7535 | and try to fetch another packet to read. */ | |
7536 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7537 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7538 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7539 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7540 | { | |
7541 | if (remote_debug) | |
7542 | fprintf_unfiltered (gdb_stdlog, | |
7543 | "Bad register packet; fetching a new packet\n"); | |
7544 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7545 | } | |
7546 | ||
74ca34ce DJ |
7547 | buf_len = strlen (rs->buf); |
7548 | ||
7549 | /* Sanity check the received packet. */ | |
7550 | if (buf_len % 2 != 0) | |
7551 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7552 | |
7553 | return buf_len / 2; | |
7554 | } | |
7555 | ||
7556 | static void | |
56be3814 | 7557 | process_g_packet (struct regcache *regcache) |
29709017 | 7558 | { |
ac7936df | 7559 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 7560 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 7561 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); |
29709017 DJ |
7562 | int i, buf_len; |
7563 | char *p; | |
7564 | char *regs; | |
7565 | ||
7566 | buf_len = strlen (rs->buf); | |
7567 | ||
7568 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 7569 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 SM |
7570 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
7571 | "bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf); | |
74ca34ce DJ |
7572 | |
7573 | /* Save the size of the packet sent to us by the target. It is used | |
7574 | as a heuristic when determining the max size of packets that the | |
7575 | target can safely receive. */ | |
7576 | if (rsa->actual_register_packet_size == 0) | |
7577 | rsa->actual_register_packet_size = buf_len; | |
7578 | ||
7579 | /* If this is smaller than we guessed the 'g' packet would be, | |
7580 | update our records. A 'g' reply that doesn't include a register's | |
7581 | value implies either that the register is not available, or that | |
7582 | the 'p' packet must be used. */ | |
7583 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7584 | { |
9dc193c3 | 7585 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7586 | |
4a22f64d | 7587 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7588 | { |
9dc193c3 LF |
7589 | long offset = rsa->regs[i].offset; |
7590 | long reg_size = register_size (gdbarch, i); | |
7591 | ||
74ca34ce DJ |
7592 | if (rsa->regs[i].pnum == -1) |
7593 | continue; | |
7594 | ||
9dc193c3 | 7595 | if (offset >= sizeof_g_packet) |
74ca34ce | 7596 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7597 | else if (offset + reg_size > sizeof_g_packet) |
7598 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7599 | else |
74ca34ce | 7600 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7601 | } |
9dc193c3 LF |
7602 | |
7603 | /* Looks valid enough, we can assume this is the correct length | |
7604 | for a 'g' packet. It's important not to adjust | |
7605 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7606 | this "if" won't be run the next time the method is called | |
7607 | with a packet of the same size and one of the internal errors | |
7608 | below will trigger instead. */ | |
7609 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7610 | } |
b323314b | 7611 | |
224c3ddb | 7612 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7613 | |
7614 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7615 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7616 | |
c906108c SS |
7617 | /* Reply describes registers byte by byte, each byte encoded as two |
7618 | hex characters. Suck them all up, then supply them to the | |
7619 | register cacheing/storage mechanism. */ | |
7620 | ||
74ca34ce | 7621 | p = rs->buf; |
ea9c271d | 7622 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7623 | { |
74ca34ce DJ |
7624 | if (p[0] == 0 || p[1] == 0) |
7625 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7626 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7627 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7628 | |
c906108c | 7629 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7630 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7631 | else |
7632 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7633 | p += 2; | |
7634 | } | |
7635 | ||
a744cf53 MS |
7636 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7637 | { | |
7638 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7639 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7640 | |
7641 | if (r->in_g_packet) | |
7642 | { | |
9dc193c3 | 7643 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7644 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7645 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7646 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7647 | else if (rs->buf[r->offset * 2] == 'x') |
7648 | { | |
7649 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7650 | /* The register isn't available, mark it as such (at | |
7651 | the same time setting the value to zero). */ | |
7652 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7653 | } | |
7654 | else | |
7655 | regcache_raw_supply (regcache, r->regnum, | |
7656 | regs + r->offset); | |
7657 | } | |
7658 | } | |
c906108c SS |
7659 | } |
7660 | ||
29709017 | 7661 | static void |
56be3814 | 7662 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7663 | { |
7664 | send_g_packet (); | |
56be3814 | 7665 | process_g_packet (regcache); |
29709017 DJ |
7666 | } |
7667 | ||
e6e4e701 PA |
7668 | /* Make the remote selected traceframe match GDB's selected |
7669 | traceframe. */ | |
7670 | ||
7671 | static void | |
7672 | set_remote_traceframe (void) | |
7673 | { | |
7674 | int newnum; | |
262e1174 | 7675 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7676 | |
262e1174 | 7677 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7678 | return; |
7679 | ||
7680 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7681 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7682 | |
7683 | newnum = target_trace_find (tfind_number, | |
7684 | get_traceframe_number (), 0, 0, NULL); | |
7685 | ||
7686 | /* Should not happen. If it does, all bets are off. */ | |
7687 | if (newnum != get_traceframe_number ()) | |
7688 | warning (_("could not set remote traceframe")); | |
7689 | } | |
7690 | ||
74ca34ce | 7691 | static void |
28439f5e PA |
7692 | remote_fetch_registers (struct target_ops *ops, |
7693 | struct regcache *regcache, int regnum) | |
74ca34ce | 7694 | { |
ac7936df | 7695 | struct gdbarch *gdbarch = regcache->arch (); |
5cd63fda | 7696 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); |
74ca34ce DJ |
7697 | int i; |
7698 | ||
e6e4e701 | 7699 | set_remote_traceframe (); |
bcc0c096 | 7700 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7701 | |
7702 | if (regnum >= 0) | |
7703 | { | |
5cd63fda | 7704 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 7705 | |
74ca34ce DJ |
7706 | gdb_assert (reg != NULL); |
7707 | ||
7708 | /* If this register might be in the 'g' packet, try that first - | |
7709 | we are likely to read more than one register. If this is the | |
7710 | first 'g' packet, we might be overly optimistic about its | |
7711 | contents, so fall back to 'p'. */ | |
7712 | if (reg->in_g_packet) | |
7713 | { | |
56be3814 | 7714 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7715 | if (reg->in_g_packet) |
7716 | return; | |
7717 | } | |
7718 | ||
56be3814 | 7719 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7720 | return; |
7721 | ||
7722 | /* This register is not available. */ | |
56be3814 | 7723 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7724 | |
7725 | return; | |
7726 | } | |
7727 | ||
56be3814 | 7728 | fetch_registers_using_g (regcache); |
74ca34ce | 7729 | |
5cd63fda | 7730 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 7731 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7732 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7733 | { |
7734 | /* This register is not available. */ | |
56be3814 | 7735 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7736 | } |
7737 | } | |
7738 | ||
c906108c SS |
7739 | /* Prepare to store registers. Since we may send them all (using a |
7740 | 'G' request), we have to read out the ones we don't want to change | |
7741 | first. */ | |
7742 | ||
c5aa993b | 7743 | static void |
f32dbf8c | 7744 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7745 | { |
5cd63fda | 7746 | remote_arch_state *rsa = get_remote_arch_state (regcache->arch ()); |
cf0e1e0d | 7747 | int i; |
cf0e1e0d | 7748 | |
c906108c | 7749 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7750 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7751 | { |
7752 | case PACKET_DISABLE: | |
7753 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7754 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 7755 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 7756 | if (rsa->regs[i].in_g_packet) |
8e368124 | 7757 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
7758 | break; |
7759 | case PACKET_ENABLE: | |
7760 | break; | |
7761 | } | |
7762 | } | |
7763 | ||
ad10f812 | 7764 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7765 | packet was not recognized. */ |
5a2468f5 JM |
7766 | |
7767 | static int | |
1f4437a4 MS |
7768 | store_register_using_P (const struct regcache *regcache, |
7769 | struct packet_reg *reg) | |
5a2468f5 | 7770 | { |
ac7936df | 7771 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 7772 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7773 | /* Try storing a single register. */ |
6d820c5c | 7774 | char *buf = rs->buf; |
9890e433 | 7775 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 7776 | char *p; |
5a2468f5 | 7777 | |
4082afcc | 7778 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7779 | return 0; |
7780 | ||
7781 | if (reg->pnum == -1) | |
7782 | return 0; | |
7783 | ||
ea9c271d | 7784 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7785 | p = buf + strlen (buf); |
56be3814 | 7786 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7787 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7788 | putpkt (rs->buf); |
7789 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7790 | |
74ca34ce DJ |
7791 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7792 | { | |
7793 | case PACKET_OK: | |
7794 | return 1; | |
7795 | case PACKET_ERROR: | |
27a9c0bf MS |
7796 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7797 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7798 | case PACKET_UNKNOWN: |
7799 | return 0; | |
7800 | default: | |
7801 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7802 | } | |
c906108c SS |
7803 | } |
7804 | ||
23860348 MS |
7805 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7806 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7807 | |
7808 | static void | |
56be3814 | 7809 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7810 | { |
d01949b6 | 7811 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 7812 | remote_arch_state *rsa = get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 7813 | gdb_byte *regs; |
c906108c SS |
7814 | char *p; |
7815 | ||
193cb69f AC |
7816 | /* Extract all the registers in the regcache copying them into a |
7817 | local buffer. */ | |
7818 | { | |
b323314b | 7819 | int i; |
a744cf53 | 7820 | |
224c3ddb | 7821 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7822 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 7823 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 7824 | { |
ea9c271d | 7825 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7826 | |
b323314b | 7827 | if (r->in_g_packet) |
56be3814 | 7828 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7829 | } |
7830 | } | |
c906108c SS |
7831 | |
7832 | /* Command describes registers byte by byte, | |
7833 | each byte encoded as two hex characters. */ | |
6d820c5c | 7834 | p = rs->buf; |
193cb69f | 7835 | *p++ = 'G'; |
74ca34ce | 7836 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
7837 | putpkt (rs->buf); |
7838 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7839 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7840 | error (_("Could not write registers; remote failure reply '%s'"), |
7841 | rs->buf); | |
c906108c | 7842 | } |
74ca34ce DJ |
7843 | |
7844 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7845 | of the register cache buffer. FIXME: ignores errors. */ | |
7846 | ||
7847 | static void | |
28439f5e PA |
7848 | remote_store_registers (struct target_ops *ops, |
7849 | struct regcache *regcache, int regnum) | |
74ca34ce | 7850 | { |
5cd63fda PA |
7851 | struct gdbarch *gdbarch = regcache->arch (); |
7852 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
7853 | int i; |
7854 | ||
e6e4e701 | 7855 | set_remote_traceframe (); |
bcc0c096 | 7856 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7857 | |
7858 | if (regnum >= 0) | |
7859 | { | |
5cd63fda | 7860 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 7861 | |
74ca34ce DJ |
7862 | gdb_assert (reg != NULL); |
7863 | ||
7864 | /* Always prefer to store registers using the 'P' packet if | |
7865 | possible; we often change only a small number of registers. | |
7866 | Sometimes we change a larger number; we'd need help from a | |
7867 | higher layer to know to use 'G'. */ | |
56be3814 | 7868 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7869 | return; |
7870 | ||
7871 | /* For now, don't complain if we have no way to write the | |
7872 | register. GDB loses track of unavailable registers too | |
7873 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7874 | any way to read the register, either... */ |
74ca34ce DJ |
7875 | if (!reg->in_g_packet) |
7876 | return; | |
7877 | ||
56be3814 | 7878 | store_registers_using_G (regcache); |
74ca34ce DJ |
7879 | return; |
7880 | } | |
7881 | ||
56be3814 | 7882 | store_registers_using_G (regcache); |
74ca34ce | 7883 | |
5cd63fda | 7884 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 7885 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7886 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7887 | /* See above for why we do not issue an error here. */ |
7888 | continue; | |
7889 | } | |
c906108c SS |
7890 | \f |
7891 | ||
7892 | /* Return the number of hex digits in num. */ | |
7893 | ||
7894 | static int | |
fba45db2 | 7895 | hexnumlen (ULONGEST num) |
c906108c SS |
7896 | { |
7897 | int i; | |
7898 | ||
7899 | for (i = 0; num != 0; i++) | |
7900 | num >>= 4; | |
7901 | ||
325fac50 | 7902 | return std::max (i, 1); |
c906108c SS |
7903 | } |
7904 | ||
2df3850c | 7905 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7906 | |
7907 | static int | |
fba45db2 | 7908 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7909 | { |
c906108c | 7910 | int len = hexnumlen (num); |
a744cf53 | 7911 | |
2df3850c JM |
7912 | return hexnumnstr (buf, num, len); |
7913 | } | |
7914 | ||
c906108c | 7915 | |
2df3850c | 7916 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7917 | |
2df3850c | 7918 | static int |
fba45db2 | 7919 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7920 | { |
7921 | int i; | |
7922 | ||
7923 | buf[width] = '\0'; | |
7924 | ||
7925 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7926 | { |
c5aa993b | 7927 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7928 | num >>= 4; |
7929 | } | |
7930 | ||
2df3850c | 7931 | return width; |
c906108c SS |
7932 | } |
7933 | ||
23860348 | 7934 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7935 | |
7936 | static CORE_ADDR | |
fba45db2 | 7937 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7938 | { |
883b9c6c | 7939 | unsigned int address_size = remote_address_size; |
a744cf53 | 7940 | |
911c95a5 UW |
7941 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7942 | if (!address_size) | |
f5656ead | 7943 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7944 | |
7945 | if (address_size > 0 | |
7946 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7947 | { |
7948 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7949 | in a ULONGEST variable. */ |
c906108c | 7950 | ULONGEST mask = 1; |
a744cf53 | 7951 | |
911c95a5 | 7952 | mask = (mask << address_size) - 1; |
c906108c SS |
7953 | addr &= mask; |
7954 | } | |
7955 | return addr; | |
7956 | } | |
7957 | ||
7958 | /* Determine whether the remote target supports binary downloading. | |
7959 | This is accomplished by sending a no-op memory write of zero length | |
7960 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7961 | the whole packet, since many stubs strip the eighth bit and |
7962 | subsequently compute a wrong checksum, which causes real havoc with | |
7963 | remote_write_bytes. | |
7a292a7a | 7964 | |
96baa820 | 7965 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7966 | clean. In cases like this, the user should clear "remote |
23860348 | 7967 | X-packet". */ |
96baa820 | 7968 | |
c906108c | 7969 | static void |
fba45db2 | 7970 | check_binary_download (CORE_ADDR addr) |
c906108c | 7971 | { |
d01949b6 | 7972 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7973 | |
4082afcc | 7974 | switch (packet_support (PACKET_X)) |
c906108c | 7975 | { |
96baa820 JM |
7976 | case PACKET_DISABLE: |
7977 | break; | |
7978 | case PACKET_ENABLE: | |
7979 | break; | |
7980 | case PACKET_SUPPORT_UNKNOWN: | |
7981 | { | |
96baa820 | 7982 | char *p; |
802188a7 | 7983 | |
2e9f7625 | 7984 | p = rs->buf; |
96baa820 JM |
7985 | *p++ = 'X'; |
7986 | p += hexnumstr (p, (ULONGEST) addr); | |
7987 | *p++ = ','; | |
7988 | p += hexnumstr (p, (ULONGEST) 0); | |
7989 | *p++ = ':'; | |
7990 | *p = '\0'; | |
802188a7 | 7991 | |
2e9f7625 | 7992 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7993 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7994 | |
2e9f7625 | 7995 | if (rs->buf[0] == '\0') |
96baa820 JM |
7996 | { |
7997 | if (remote_debug) | |
7998 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7999 | "binary downloading NOT " |
8000 | "supported by target\n"); | |
444abaca | 8001 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8002 | } |
8003 | else | |
8004 | { | |
8005 | if (remote_debug) | |
8006 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8007 | "binary downloading supported by target\n"); |
444abaca | 8008 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8009 | } |
8010 | break; | |
8011 | } | |
c906108c SS |
8012 | } |
8013 | } | |
8014 | ||
124e13d9 SM |
8015 | /* Helper function to resize the payload in order to try to get a good |
8016 | alignment. We try to write an amount of data such that the next write will | |
8017 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8018 | ||
8019 | static int | |
8020 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8021 | { | |
8022 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8023 | } | |
8024 | ||
c906108c SS |
8025 | /* Write memory data directly to the remote machine. |
8026 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8027 | HEADER is the starting part of the packet. |
c906108c SS |
8028 | MEMADDR is the address in the remote memory space. |
8029 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8030 | LEN_UNITS is the number of addressable units to write. |
8031 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8032 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8033 | should send data as binary ('X'), or hex-encoded ('M'). | |
8034 | ||
8035 | The function creates packet of the form | |
8036 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8037 | ||
124e13d9 | 8038 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8039 | |
8040 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8041 | are omitted. | |
8042 | ||
9b409511 | 8043 | Return the transferred status, error or OK (an |
124e13d9 SM |
8044 | 'enum target_xfer_status' value). Save the number of addressable units |
8045 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8046 | ||
8047 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8048 | exchange between gdb and the stub could look like (?? in place of the | |
8049 | checksum): | |
8050 | ||
8051 | -> $m1000,4#?? | |
8052 | <- aaaabbbbccccdddd | |
8053 | ||
8054 | -> $M1000,3:eeeeffffeeee#?? | |
8055 | <- OK | |
8056 | ||
8057 | -> $m1000,4#?? | |
8058 | <- eeeeffffeeeedddd */ | |
c906108c | 8059 | |
9b409511 | 8060 | static enum target_xfer_status |
a76d924d | 8061 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8062 | const gdb_byte *myaddr, ULONGEST len_units, |
8063 | int unit_size, ULONGEST *xfered_len_units, | |
8064 | char packet_format, int use_length) | |
c906108c | 8065 | { |
6d820c5c | 8066 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8067 | char *p; |
a76d924d DJ |
8068 | char *plen = NULL; |
8069 | int plenlen = 0; | |
124e13d9 SM |
8070 | int todo_units; |
8071 | int units_written; | |
8072 | int payload_capacity_bytes; | |
8073 | int payload_length_bytes; | |
a76d924d DJ |
8074 | |
8075 | if (packet_format != 'X' && packet_format != 'M') | |
8076 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8077 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8078 | |
124e13d9 | 8079 | if (len_units == 0) |
9b409511 | 8080 | return TARGET_XFER_EOF; |
b2182ed2 | 8081 | |
124e13d9 | 8082 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8083 | |
6d820c5c DJ |
8084 | /* The packet buffer will be large enough for the payload; |
8085 | get_memory_packet_size ensures this. */ | |
a76d924d | 8086 | rs->buf[0] = '\0'; |
c906108c | 8087 | |
a257b5bb | 8088 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8089 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8090 | ||
124e13d9 | 8091 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8092 | if (!use_length) |
0df8b418 | 8093 | /* The comma won't be used. */ |
124e13d9 SM |
8094 | payload_capacity_bytes += 1; |
8095 | payload_capacity_bytes -= strlen (header); | |
8096 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8097 | |
a76d924d | 8098 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8099 | |
a76d924d DJ |
8100 | strcat (rs->buf, header); |
8101 | p = rs->buf + strlen (header); | |
8102 | ||
8103 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8104 | if (packet_format == 'X') | |
c906108c | 8105 | { |
23860348 | 8106 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8107 | todo_units = std::min (len_units, |
8108 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8109 | if (use_length) |
124e13d9 | 8110 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8111 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8112 | } |
8113 | else | |
8114 | { | |
124e13d9 | 8115 | /* Number of bytes that will fit. */ |
325fac50 PA |
8116 | todo_units |
8117 | = std::min (len_units, | |
8118 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8119 | if (use_length) |
124e13d9 | 8120 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8121 | todo_units = std::min (todo_units, |
8122 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8123 | } |
a76d924d | 8124 | |
124e13d9 | 8125 | if (todo_units <= 0) |
3de11b2e | 8126 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8127 | _("minimum packet size too small to write data")); |
802188a7 | 8128 | |
6765f3e5 DJ |
8129 | /* If we already need another packet, then try to align the end |
8130 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8131 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8132 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8133 | |
a257b5bb | 8134 | /* Append "<memaddr>". */ |
917317f4 JM |
8135 | memaddr = remote_address_masked (memaddr); |
8136 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8137 | |
a76d924d DJ |
8138 | if (use_length) |
8139 | { | |
8140 | /* Append ",". */ | |
8141 | *p++ = ','; | |
802188a7 | 8142 | |
124e13d9 SM |
8143 | /* Append the length and retain its location and size. It may need to be |
8144 | adjusted once the packet body has been created. */ | |
a76d924d | 8145 | plen = p; |
124e13d9 | 8146 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8147 | p += plenlen; |
8148 | } | |
a257b5bb AC |
8149 | |
8150 | /* Append ":". */ | |
917317f4 JM |
8151 | *p++ = ':'; |
8152 | *p = '\0'; | |
802188a7 | 8153 | |
a257b5bb | 8154 | /* Append the packet body. */ |
a76d924d | 8155 | if (packet_format == 'X') |
917317f4 | 8156 | { |
917317f4 JM |
8157 | /* Binary mode. Send target system values byte by byte, in |
8158 | increasing byte addresses. Only escape certain critical | |
8159 | characters. */ | |
124e13d9 SM |
8160 | payload_length_bytes = |
8161 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8162 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8163 | |
124e13d9 | 8164 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8165 | a second try to keep the end of the packet aligned. Don't do |
8166 | this if the packet is tiny. */ | |
124e13d9 | 8167 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8168 | { |
124e13d9 SM |
8169 | int new_todo_units; |
8170 | ||
8171 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8172 | ||
8173 | if (new_todo_units != units_written) | |
8174 | payload_length_bytes = | |
8175 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8176 | (gdb_byte *) p, &units_written, | |
8177 | payload_capacity_bytes); | |
6765f3e5 DJ |
8178 | } |
8179 | ||
124e13d9 SM |
8180 | p += payload_length_bytes; |
8181 | if (use_length && units_written < todo_units) | |
c906108c | 8182 | { |
802188a7 | 8183 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8184 | and we have actually sent fewer units than planned. |
917317f4 JM |
8185 | Fix-up the length field of the packet. Use the same |
8186 | number of characters as before. */ | |
124e13d9 SM |
8187 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8188 | plenlen); | |
917317f4 | 8189 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8190 | } |
a76d924d DJ |
8191 | } |
8192 | else | |
8193 | { | |
917317f4 JM |
8194 | /* Normal mode: Send target system values byte by byte, in |
8195 | increasing byte addresses. Each byte is encoded as a two hex | |
8196 | value. */ | |
124e13d9 SM |
8197 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8198 | units_written = todo_units; | |
c906108c | 8199 | } |
802188a7 | 8200 | |
2e9f7625 | 8201 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8202 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8203 | |
2e9f7625 | 8204 | if (rs->buf[0] == 'E') |
00d84524 | 8205 | return TARGET_XFER_E_IO; |
802188a7 | 8206 | |
124e13d9 SM |
8207 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8208 | send fewer units than we'd planned. */ | |
8209 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8210 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8211 | } |
8212 | ||
a76d924d DJ |
8213 | /* Write memory data directly to the remote machine. |
8214 | This does not inform the data cache; the data cache uses this. | |
8215 | MEMADDR is the address in the remote memory space. | |
8216 | MYADDR is the address of the buffer in our space. | |
8217 | LEN is the number of bytes. | |
8218 | ||
9b409511 YQ |
8219 | Return the transferred status, error or OK (an |
8220 | 'enum target_xfer_status' value). Save the number of bytes | |
8221 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8222 | |
9b409511 YQ |
8223 | static enum target_xfer_status |
8224 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8225 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8226 | { |
a121b7c1 | 8227 | const char *packet_format = NULL; |
a76d924d DJ |
8228 | |
8229 | /* Check whether the target supports binary download. */ | |
8230 | check_binary_download (memaddr); | |
8231 | ||
4082afcc | 8232 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8233 | { |
8234 | case PACKET_ENABLE: | |
8235 | packet_format = "X"; | |
8236 | break; | |
8237 | case PACKET_DISABLE: | |
8238 | packet_format = "M"; | |
8239 | break; | |
8240 | case PACKET_SUPPORT_UNKNOWN: | |
8241 | internal_error (__FILE__, __LINE__, | |
8242 | _("remote_write_bytes: bad internal state")); | |
8243 | default: | |
8244 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8245 | } | |
8246 | ||
8247 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8248 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8249 | packet_format[0], 1); |
a76d924d DJ |
8250 | } |
8251 | ||
9217e74e YQ |
8252 | /* Read memory data directly from the remote machine. |
8253 | This does not use the data cache; the data cache uses this. | |
8254 | MEMADDR is the address in the remote memory space. | |
8255 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8256 | LEN_UNITS is the number of addressable memory units to read.. |
8257 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8258 | |
8259 | Return the transferred status, error or OK (an | |
8260 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8261 | transferred in *XFERED_LEN_UNITS. |
8262 | ||
8263 | See the comment of remote_write_bytes_aux for an example of | |
8264 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8265 | |
8266 | static enum target_xfer_status | |
124e13d9 SM |
8267 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8268 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8269 | { |
8270 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8271 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8272 | char *p; |
124e13d9 SM |
8273 | int todo_units; |
8274 | int decoded_bytes; | |
9217e74e | 8275 | |
124e13d9 | 8276 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8277 | /* The packet buffer will be large enough for the payload; |
8278 | get_memory_packet_size ensures this. */ | |
8279 | ||
124e13d9 | 8280 | /* Number of units that will fit. */ |
325fac50 PA |
8281 | todo_units = std::min (len_units, |
8282 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8283 | |
8284 | /* Construct "m"<memaddr>","<len>". */ | |
8285 | memaddr = remote_address_masked (memaddr); | |
8286 | p = rs->buf; | |
8287 | *p++ = 'm'; | |
8288 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8289 | *p++ = ','; | |
124e13d9 | 8290 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8291 | *p = '\0'; |
8292 | putpkt (rs->buf); | |
8293 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8294 | if (rs->buf[0] == 'E' | |
8295 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8296 | && rs->buf[3] == '\0') | |
8297 | return TARGET_XFER_E_IO; | |
8298 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8299 | characters. */ | |
8300 | p = rs->buf; | |
124e13d9 | 8301 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8302 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8303 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8304 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8305 | } |
8306 | ||
b55fbac4 YQ |
8307 | /* Using the set of read-only target sections of remote, read live |
8308 | read-only memory. | |
8acf9577 YQ |
8309 | |
8310 | For interface/parameters/return description see target.h, | |
8311 | to_xfer_partial. */ | |
8312 | ||
8313 | static enum target_xfer_status | |
b55fbac4 YQ |
8314 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8315 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8316 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8317 | { |
8318 | struct target_section *secp; | |
8319 | struct target_section_table *table; | |
8320 | ||
8321 | secp = target_section_by_addr (ops, memaddr); | |
8322 | if (secp != NULL | |
8323 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8324 | secp->the_bfd_section) | |
8325 | & SEC_READONLY)) | |
8326 | { | |
8327 | struct target_section *p; | |
8328 | ULONGEST memend = memaddr + len; | |
8329 | ||
8330 | table = target_get_section_table (ops); | |
8331 | ||
8332 | for (p = table->sections; p < table->sections_end; p++) | |
8333 | { | |
8334 | if (memaddr >= p->addr) | |
8335 | { | |
8336 | if (memend <= p->endaddr) | |
8337 | { | |
8338 | /* Entire transfer is within this section. */ | |
124e13d9 | 8339 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8340 | xfered_len); |
8acf9577 YQ |
8341 | } |
8342 | else if (memaddr >= p->endaddr) | |
8343 | { | |
8344 | /* This section ends before the transfer starts. */ | |
8345 | continue; | |
8346 | } | |
8347 | else | |
8348 | { | |
8349 | /* This section overlaps the transfer. Just do half. */ | |
8350 | len = p->endaddr - memaddr; | |
124e13d9 | 8351 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8352 | xfered_len); |
8acf9577 YQ |
8353 | } |
8354 | } | |
8355 | } | |
8356 | } | |
8357 | ||
8358 | return TARGET_XFER_EOF; | |
8359 | } | |
8360 | ||
9217e74e YQ |
8361 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8362 | first if the requested memory is unavailable in traceframe. | |
8363 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8364 | |
9b409511 | 8365 | static enum target_xfer_status |
8acf9577 | 8366 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8367 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8368 | ULONGEST *xfered_len) | |
c906108c | 8369 | { |
6b6aa828 | 8370 | if (len == 0) |
96c4f946 | 8371 | return TARGET_XFER_EOF; |
b2182ed2 | 8372 | |
8acf9577 YQ |
8373 | if (get_traceframe_number () != -1) |
8374 | { | |
a79b1bc6 | 8375 | std::vector<mem_range> available; |
8acf9577 YQ |
8376 | |
8377 | /* If we fail to get the set of available memory, then the | |
8378 | target does not support querying traceframe info, and so we | |
8379 | attempt reading from the traceframe anyway (assuming the | |
8380 | target implements the old QTro packet then). */ | |
8381 | if (traceframe_available_memory (&available, memaddr, len)) | |
8382 | { | |
a79b1bc6 | 8383 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8384 | { |
8385 | enum target_xfer_status res; | |
8386 | ||
8387 | /* Don't read into the traceframe's available | |
8388 | memory. */ | |
a79b1bc6 | 8389 | if (!available.empty ()) |
8acf9577 YQ |
8390 | { |
8391 | LONGEST oldlen = len; | |
8392 | ||
a79b1bc6 | 8393 | len = available[0].start - memaddr; |
8acf9577 YQ |
8394 | gdb_assert (len <= oldlen); |
8395 | } | |
8396 | ||
8acf9577 | 8397 | /* This goes through the topmost target again. */ |
b55fbac4 | 8398 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8399 | len, unit_size, xfered_len); |
8acf9577 YQ |
8400 | if (res == TARGET_XFER_OK) |
8401 | return TARGET_XFER_OK; | |
8402 | else | |
8403 | { | |
8404 | /* No use trying further, we know some memory starting | |
8405 | at MEMADDR isn't available. */ | |
8406 | *xfered_len = len; | |
92ffd475 PC |
8407 | return (*xfered_len != 0) ? |
8408 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8409 | } |
8410 | } | |
8411 | ||
8412 | /* Don't try to read more than how much is available, in | |
8413 | case the target implements the deprecated QTro packet to | |
8414 | cater for older GDBs (the target's knowledge of read-only | |
8415 | sections may be outdated by now). */ | |
a79b1bc6 | 8416 | len = available[0].length; |
8acf9577 YQ |
8417 | } |
8418 | } | |
8419 | ||
124e13d9 | 8420 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8421 | } |
74531fed | 8422 | |
c906108c | 8423 | \f |
c906108c | 8424 | |
a76d924d DJ |
8425 | /* Sends a packet with content determined by the printf format string |
8426 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8427 | whether the packet was a success, a failure, or unknown. */ | |
8428 | ||
77b64a49 PA |
8429 | static enum packet_result remote_send_printf (const char *format, ...) |
8430 | ATTRIBUTE_PRINTF (1, 2); | |
8431 | ||
2c0b251b | 8432 | static enum packet_result |
a76d924d DJ |
8433 | remote_send_printf (const char *format, ...) |
8434 | { | |
8435 | struct remote_state *rs = get_remote_state (); | |
8436 | int max_size = get_remote_packet_size (); | |
a76d924d | 8437 | va_list ap; |
a744cf53 | 8438 | |
a76d924d DJ |
8439 | va_start (ap, format); |
8440 | ||
8441 | rs->buf[0] = '\0'; | |
8442 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8443 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8444 | |
8445 | if (putpkt (rs->buf) < 0) | |
8446 | error (_("Communication problem with target.")); | |
8447 | ||
8448 | rs->buf[0] = '\0'; | |
8449 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8450 | ||
8451 | return packet_check_result (rs->buf); | |
8452 | } | |
8453 | ||
a76d924d DJ |
8454 | /* Flash writing can take quite some time. We'll set |
8455 | effectively infinite timeout for flash operations. | |
8456 | In future, we'll need to decide on a better approach. */ | |
8457 | static const int remote_flash_timeout = 1000; | |
8458 | ||
8459 | static void | |
8460 | remote_flash_erase (struct target_ops *ops, | |
8461 | ULONGEST address, LONGEST length) | |
8462 | { | |
f5656ead | 8463 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8464 | enum packet_result ret; |
2ec845e7 TT |
8465 | scoped_restore restore_timeout |
8466 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8467 | |
8468 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8469 | phex (address, addr_size), |
a76d924d DJ |
8470 | phex (length, 4)); |
8471 | switch (ret) | |
8472 | { | |
8473 | case PACKET_UNKNOWN: | |
8474 | error (_("Remote target does not support flash erase")); | |
8475 | case PACKET_ERROR: | |
8476 | error (_("Error erasing flash with vFlashErase packet")); | |
8477 | default: | |
8478 | break; | |
8479 | } | |
a76d924d DJ |
8480 | } |
8481 | ||
9b409511 YQ |
8482 | static enum target_xfer_status |
8483 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8484 | ULONGEST length, ULONGEST *xfered_len, | |
8485 | const gdb_byte *data) | |
a76d924d | 8486 | { |
2ec845e7 TT |
8487 | scoped_restore restore_timeout |
8488 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8489 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8490 | xfered_len,'X', 0); | |
a76d924d DJ |
8491 | } |
8492 | ||
8493 | static void | |
8494 | remote_flash_done (struct target_ops *ops) | |
8495 | { | |
a76d924d | 8496 | int ret; |
a76d924d | 8497 | |
2ec845e7 TT |
8498 | scoped_restore restore_timeout |
8499 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8500 | ||
a76d924d | 8501 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8502 | |
8503 | switch (ret) | |
8504 | { | |
8505 | case PACKET_UNKNOWN: | |
8506 | error (_("Remote target does not support vFlashDone")); | |
8507 | case PACKET_ERROR: | |
8508 | error (_("Error finishing flash operation")); | |
8509 | default: | |
8510 | break; | |
8511 | } | |
8512 | } | |
8513 | ||
c906108c | 8514 | static void |
fba45db2 | 8515 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8516 | { |
8517 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8518 | } | |
8519 | \f | |
8520 | /* Stuff for dealing with the packets which are part of this protocol. | |
8521 | See comment at top of file for details. */ | |
8522 | ||
1927e618 PA |
8523 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8524 | error to higher layers. Called when a serial error is detected. | |
8525 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8526 | the system error message for errno at function entry and final dot |
8527 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8528 | |
8529 | static void | |
8530 | unpush_and_perror (const char *string) | |
8531 | { | |
d6cb50a2 | 8532 | int saved_errno = errno; |
1927e618 PA |
8533 | |
8534 | remote_unpush_target (); | |
d6cb50a2 JK |
8535 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8536 | safe_strerror (saved_errno)); | |
1927e618 PA |
8537 | } |
8538 | ||
048094ac PA |
8539 | /* Read a single character from the remote end. The current quit |
8540 | handler is overridden to avoid quitting in the middle of packet | |
8541 | sequence, as that would break communication with the remote server. | |
8542 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8543 | |
8544 | static int | |
fba45db2 | 8545 | readchar (int timeout) |
c906108c SS |
8546 | { |
8547 | int ch; | |
5d93a237 | 8548 | struct remote_state *rs = get_remote_state (); |
048094ac | 8549 | |
2ec845e7 TT |
8550 | { |
8551 | scoped_restore restore_quit | |
8552 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8553 | |
2ec845e7 | 8554 | rs->got_ctrlc_during_io = 0; |
c906108c | 8555 | |
2ec845e7 | 8556 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8557 | |
2ec845e7 TT |
8558 | if (rs->got_ctrlc_during_io) |
8559 | set_quit_flag (); | |
8560 | } | |
048094ac | 8561 | |
2acceee2 | 8562 | if (ch >= 0) |
0876f84a | 8563 | return ch; |
2acceee2 JM |
8564 | |
8565 | switch ((enum serial_rc) ch) | |
c906108c SS |
8566 | { |
8567 | case SERIAL_EOF: | |
78a095c3 | 8568 | remote_unpush_target (); |
598d3636 | 8569 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8570 | /* no return */ |
c906108c | 8571 | case SERIAL_ERROR: |
1927e618 PA |
8572 | unpush_and_perror (_("Remote communication error. " |
8573 | "Target disconnected.")); | |
2acceee2 | 8574 | /* no return */ |
c906108c | 8575 | case SERIAL_TIMEOUT: |
2acceee2 | 8576 | break; |
c906108c | 8577 | } |
2acceee2 | 8578 | return ch; |
c906108c SS |
8579 | } |
8580 | ||
c33e31fd | 8581 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8582 | writing fails. The current quit handler is overridden to avoid |
8583 | quitting in the middle of packet sequence, as that would break | |
8584 | communication with the remote server. See | |
8585 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8586 | |
8587 | static void | |
8588 | remote_serial_write (const char *str, int len) | |
8589 | { | |
5d93a237 | 8590 | struct remote_state *rs = get_remote_state (); |
048094ac | 8591 | |
2ec845e7 TT |
8592 | scoped_restore restore_quit |
8593 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8594 | |
8595 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8596 | |
8597 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8598 | { |
1927e618 PA |
8599 | unpush_and_perror (_("Remote communication error. " |
8600 | "Target disconnected.")); | |
c33e31fd | 8601 | } |
048094ac PA |
8602 | |
8603 | if (rs->got_ctrlc_during_io) | |
8604 | set_quit_flag (); | |
c33e31fd PA |
8605 | } |
8606 | ||
6d820c5c DJ |
8607 | /* Send the command in *BUF to the remote machine, and read the reply |
8608 | into *BUF. Report an error if we get an error reply. Resize | |
8609 | *BUF using xrealloc if necessary to hold the result, and update | |
8610 | *SIZEOF_BUF. */ | |
c906108c SS |
8611 | |
8612 | static void | |
6d820c5c DJ |
8613 | remote_send (char **buf, |
8614 | long *sizeof_buf) | |
c906108c | 8615 | { |
6d820c5c | 8616 | putpkt (*buf); |
c2d11a7d | 8617 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8618 | |
6d820c5c DJ |
8619 | if ((*buf)[0] == 'E') |
8620 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8621 | } |
8622 | ||
b3ced9ba PA |
8623 | /* Return a string representing an escaped version of BUF, of len N. |
8624 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8625 | |
b3ced9ba | 8626 | static std::string |
6e5abd65 PA |
8627 | escape_buffer (const char *buf, int n) |
8628 | { | |
d7e74731 | 8629 | string_file stb; |
6e5abd65 | 8630 | |
d7e74731 PA |
8631 | stb.putstrn (buf, n, '\\'); |
8632 | return std::move (stb.string ()); | |
6e5abd65 PA |
8633 | } |
8634 | ||
c906108c SS |
8635 | /* Display a null-terminated packet on stdout, for debugging, using C |
8636 | string notation. */ | |
8637 | ||
8638 | static void | |
baa336ce | 8639 | print_packet (const char *buf) |
c906108c SS |
8640 | { |
8641 | puts_filtered ("\""); | |
43e526b9 | 8642 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8643 | puts_filtered ("\""); |
8644 | } | |
8645 | ||
8646 | int | |
baa336ce | 8647 | putpkt (const char *buf) |
c906108c SS |
8648 | { |
8649 | return putpkt_binary (buf, strlen (buf)); | |
8650 | } | |
8651 | ||
8652 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8653 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8654 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8655 | and for a possible /0 if we are debugging (remote_debug) and want |
8656 | to print the sent packet as a string. */ | |
c906108c SS |
8657 | |
8658 | static int | |
baa336ce | 8659 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8660 | { |
2d717e4f | 8661 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8662 | int i; |
8663 | unsigned char csum = 0; | |
b80406ac TT |
8664 | gdb::def_vector<char> data (cnt + 6); |
8665 | char *buf2 = data.data (); | |
085dd6e6 | 8666 | |
c906108c SS |
8667 | int ch; |
8668 | int tcount = 0; | |
8669 | char *p; | |
8670 | ||
e24a49d8 PA |
8671 | /* Catch cases like trying to read memory or listing threads while |
8672 | we're waiting for a stop reply. The remote server wouldn't be | |
8673 | ready to handle this request, so we'd hang and timeout. We don't | |
8674 | have to worry about this in synchronous mode, because in that | |
8675 | case it's not possible to issue a command while the target is | |
74531fed PA |
8676 | running. This is not a problem in non-stop mode, because in that |
8677 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8678 | if (!target_is_non_stop_p () |
8679 | && target_is_async_p () | |
8680 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8681 | { |
8682 | error (_("Cannot execute this command while the target is running.\n" | |
8683 | "Use the \"interrupt\" command to stop the target\n" | |
8684 | "and then try again.")); | |
8685 | } | |
e24a49d8 | 8686 | |
2d717e4f DJ |
8687 | /* We're sending out a new packet. Make sure we don't look at a |
8688 | stale cached response. */ | |
8689 | rs->cached_wait_status = 0; | |
8690 | ||
c906108c SS |
8691 | /* Copy the packet into buffer BUF2, encapsulating it |
8692 | and giving it a checksum. */ | |
8693 | ||
c906108c SS |
8694 | p = buf2; |
8695 | *p++ = '$'; | |
8696 | ||
8697 | for (i = 0; i < cnt; i++) | |
8698 | { | |
8699 | csum += buf[i]; | |
8700 | *p++ = buf[i]; | |
8701 | } | |
8702 | *p++ = '#'; | |
8703 | *p++ = tohex ((csum >> 4) & 0xf); | |
8704 | *p++ = tohex (csum & 0xf); | |
8705 | ||
8706 | /* Send it over and over until we get a positive ack. */ | |
8707 | ||
8708 | while (1) | |
8709 | { | |
8710 | int started_error_output = 0; | |
8711 | ||
8712 | if (remote_debug) | |
8713 | { | |
8714 | *p = '\0'; | |
b3ced9ba | 8715 | |
6f8976bf YQ |
8716 | int len = (int) (p - buf2); |
8717 | ||
8718 | std::string str | |
8719 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
8720 | ||
8721 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
8722 | ||
567a3e54 SM |
8723 | if (len > REMOTE_DEBUG_MAX_CHAR) |
8724 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
8725 | len - REMOTE_DEBUG_MAX_CHAR); | |
6f8976bf YQ |
8726 | |
8727 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 8728 | |
0f71a2f6 | 8729 | gdb_flush (gdb_stdlog); |
c906108c | 8730 | } |
c33e31fd | 8731 | remote_serial_write (buf2, p - buf2); |
c906108c | 8732 | |
a6f3e723 SL |
8733 | /* If this is a no acks version of the remote protocol, send the |
8734 | packet and move on. */ | |
8735 | if (rs->noack_mode) | |
8736 | break; | |
8737 | ||
74531fed PA |
8738 | /* Read until either a timeout occurs (-2) or '+' is read. |
8739 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8740 | while (1) |
8741 | { | |
8742 | ch = readchar (remote_timeout); | |
8743 | ||
c5aa993b | 8744 | if (remote_debug) |
c906108c SS |
8745 | { |
8746 | switch (ch) | |
8747 | { | |
8748 | case '+': | |
1216fa2c | 8749 | case '-': |
c906108c SS |
8750 | case SERIAL_TIMEOUT: |
8751 | case '$': | |
74531fed | 8752 | case '%': |
c906108c SS |
8753 | if (started_error_output) |
8754 | { | |
8755 | putchar_unfiltered ('\n'); | |
8756 | started_error_output = 0; | |
8757 | } | |
8758 | } | |
8759 | } | |
8760 | ||
8761 | switch (ch) | |
8762 | { | |
8763 | case '+': | |
8764 | if (remote_debug) | |
0f71a2f6 | 8765 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 8766 | return 1; |
1216fa2c AC |
8767 | case '-': |
8768 | if (remote_debug) | |
8769 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8770 | /* FALLTHROUGH */ |
c906108c | 8771 | case SERIAL_TIMEOUT: |
c5aa993b | 8772 | tcount++; |
c906108c | 8773 | if (tcount > 3) |
b80406ac | 8774 | return 0; |
23860348 | 8775 | break; /* Retransmit buffer. */ |
c906108c SS |
8776 | case '$': |
8777 | { | |
40e3f985 | 8778 | if (remote_debug) |
2bc416ba | 8779 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8780 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8781 | /* It's probably an old response sent because an ACK |
8782 | was lost. Gobble up the packet and ack it so it | |
8783 | doesn't get retransmitted when we resend this | |
8784 | packet. */ | |
6d820c5c | 8785 | skip_frame (); |
c33e31fd | 8786 | remote_serial_write ("+", 1); |
23860348 | 8787 | continue; /* Now, go look for +. */ |
c906108c | 8788 | } |
74531fed PA |
8789 | |
8790 | case '%': | |
8791 | { | |
8792 | int val; | |
8793 | ||
8794 | /* If we got a notification, handle it, and go back to looking | |
8795 | for an ack. */ | |
8796 | /* We've found the start of a notification. Now | |
8797 | collect the data. */ | |
8798 | val = read_frame (&rs->buf, &rs->buf_size); | |
8799 | if (val >= 0) | |
8800 | { | |
8801 | if (remote_debug) | |
8802 | { | |
b3ced9ba | 8803 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 8804 | |
6e5abd65 PA |
8805 | fprintf_unfiltered (gdb_stdlog, |
8806 | " Notification received: %s\n", | |
b3ced9ba | 8807 | str.c_str ()); |
74531fed | 8808 | } |
5965e028 | 8809 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8810 | /* We're in sync now, rewait for the ack. */ |
8811 | tcount = 0; | |
8812 | } | |
8813 | else | |
8814 | { | |
8815 | if (remote_debug) | |
8816 | { | |
8817 | if (!started_error_output) | |
8818 | { | |
8819 | started_error_output = 1; | |
8820 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8821 | } | |
8822 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8823 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8824 | } | |
8825 | } | |
8826 | continue; | |
8827 | } | |
8828 | /* fall-through */ | |
c906108c SS |
8829 | default: |
8830 | if (remote_debug) | |
8831 | { | |
8832 | if (!started_error_output) | |
8833 | { | |
8834 | started_error_output = 1; | |
0f71a2f6 | 8835 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8836 | } |
0f71a2f6 | 8837 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8838 | } |
8839 | continue; | |
8840 | } | |
23860348 | 8841 | break; /* Here to retransmit. */ |
c906108c SS |
8842 | } |
8843 | ||
8844 | #if 0 | |
8845 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8846 | able to get out next time we call QUIT, without anything as |
8847 | violent as interrupt_query. If we want to provide a way out of | |
8848 | here without getting to the next QUIT, it should be based on | |
8849 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8850 | if (quit_flag) |
8851 | { | |
8852 | quit_flag = 0; | |
8853 | interrupt_query (); | |
8854 | } | |
8855 | #endif | |
8856 | } | |
a5c0808e | 8857 | |
a6f3e723 | 8858 | return 0; |
c906108c SS |
8859 | } |
8860 | ||
6d820c5c DJ |
8861 | /* Come here after finding the start of a frame when we expected an |
8862 | ack. Do our best to discard the rest of this packet. */ | |
8863 | ||
8864 | static void | |
8865 | skip_frame (void) | |
8866 | { | |
8867 | int c; | |
8868 | ||
8869 | while (1) | |
8870 | { | |
8871 | c = readchar (remote_timeout); | |
8872 | switch (c) | |
8873 | { | |
8874 | case SERIAL_TIMEOUT: | |
8875 | /* Nothing we can do. */ | |
8876 | return; | |
8877 | case '#': | |
8878 | /* Discard the two bytes of checksum and stop. */ | |
8879 | c = readchar (remote_timeout); | |
8880 | if (c >= 0) | |
8881 | c = readchar (remote_timeout); | |
8882 | ||
8883 | return; | |
8884 | case '*': /* Run length encoding. */ | |
8885 | /* Discard the repeat count. */ | |
8886 | c = readchar (remote_timeout); | |
8887 | if (c < 0) | |
8888 | return; | |
8889 | break; | |
8890 | default: | |
8891 | /* A regular character. */ | |
8892 | break; | |
8893 | } | |
8894 | } | |
8895 | } | |
8896 | ||
c906108c | 8897 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8898 | into *BUF, verifying the checksum, length, and handling run-length |
8899 | compression. NUL terminate the buffer. If there is not enough room, | |
8900 | expand *BUF using xrealloc. | |
c906108c | 8901 | |
c2d11a7d JM |
8902 | Returns -1 on error, number of characters in buffer (ignoring the |
8903 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8904 | SERIAL status indications). */ |
c2d11a7d JM |
8905 | |
8906 | static long | |
6d820c5c DJ |
8907 | read_frame (char **buf_p, |
8908 | long *sizeof_buf) | |
c906108c SS |
8909 | { |
8910 | unsigned char csum; | |
c2d11a7d | 8911 | long bc; |
c906108c | 8912 | int c; |
6d820c5c | 8913 | char *buf = *buf_p; |
a6f3e723 | 8914 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8915 | |
8916 | csum = 0; | |
c2d11a7d | 8917 | bc = 0; |
c906108c SS |
8918 | |
8919 | while (1) | |
8920 | { | |
8921 | c = readchar (remote_timeout); | |
c906108c SS |
8922 | switch (c) |
8923 | { | |
8924 | case SERIAL_TIMEOUT: | |
8925 | if (remote_debug) | |
0f71a2f6 | 8926 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8927 | return -1; |
c906108c SS |
8928 | case '$': |
8929 | if (remote_debug) | |
0f71a2f6 JM |
8930 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8931 | gdb_stdlog); | |
23860348 | 8932 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8933 | case '#': |
8934 | { | |
8935 | unsigned char pktcsum; | |
e1b09194 AC |
8936 | int check_0 = 0; |
8937 | int check_1 = 0; | |
c906108c | 8938 | |
c2d11a7d | 8939 | buf[bc] = '\0'; |
c906108c | 8940 | |
e1b09194 AC |
8941 | check_0 = readchar (remote_timeout); |
8942 | if (check_0 >= 0) | |
8943 | check_1 = readchar (remote_timeout); | |
802188a7 | 8944 | |
e1b09194 AC |
8945 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8946 | { | |
8947 | if (remote_debug) | |
2bc416ba | 8948 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8949 | gdb_stdlog); |
e1b09194 AC |
8950 | return -1; |
8951 | } | |
8952 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8953 | { |
8954 | if (remote_debug) | |
2bc416ba | 8955 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8956 | gdb_stdlog); |
40e3f985 FN |
8957 | return -1; |
8958 | } | |
c906108c | 8959 | |
a6f3e723 SL |
8960 | /* Don't recompute the checksum; with no ack packets we |
8961 | don't have any way to indicate a packet retransmission | |
8962 | is necessary. */ | |
8963 | if (rs->noack_mode) | |
8964 | return bc; | |
8965 | ||
e1b09194 | 8966 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8967 | if (csum == pktcsum) |
c2d11a7d | 8968 | return bc; |
c906108c | 8969 | |
c5aa993b | 8970 | if (remote_debug) |
c906108c | 8971 | { |
b3ced9ba | 8972 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 8973 | |
6e5abd65 | 8974 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
8975 | "Bad checksum, sentsum=0x%x, " |
8976 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 8977 | pktcsum, csum, str.c_str ()); |
c906108c | 8978 | } |
c2d11a7d | 8979 | /* Number of characters in buffer ignoring trailing |
23860348 | 8980 | NULL. */ |
c2d11a7d | 8981 | return -1; |
c906108c | 8982 | } |
23860348 | 8983 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8984 | { |
8985 | int repeat; | |
c906108c | 8986 | |
a744cf53 | 8987 | csum += c; |
b4501125 AC |
8988 | c = readchar (remote_timeout); |
8989 | csum += c; | |
23860348 | 8990 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8991 | |
23860348 | 8992 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8993 | |
6d820c5c | 8994 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8995 | { |
6d820c5c DJ |
8996 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8997 | { | |
8998 | /* Make some more room in the buffer. */ | |
8999 | *sizeof_buf += repeat; | |
224c3ddb | 9000 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9001 | buf = *buf_p; |
9002 | } | |
9003 | ||
c2d11a7d JM |
9004 | memset (&buf[bc], buf[bc - 1], repeat); |
9005 | bc += repeat; | |
c2c6d25f JM |
9006 | continue; |
9007 | } | |
9008 | ||
c2d11a7d | 9009 | buf[bc] = '\0'; |
6d820c5c | 9010 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9011 | return -1; |
c2c6d25f | 9012 | } |
c906108c | 9013 | default: |
6d820c5c | 9014 | if (bc >= *sizeof_buf - 1) |
c906108c | 9015 | { |
6d820c5c DJ |
9016 | /* Make some more room in the buffer. */ |
9017 | *sizeof_buf *= 2; | |
224c3ddb | 9018 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9019 | buf = *buf_p; |
c906108c SS |
9020 | } |
9021 | ||
6d820c5c DJ |
9022 | buf[bc++] = c; |
9023 | csum += c; | |
9024 | continue; | |
c906108c SS |
9025 | } |
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. */ | |
d9fcf2fb JM |
9034 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9035 | don't have to change all the calls to getpkt to deal with the | |
9036 | return value, because at the moment I don't know what the right | |
23860348 | 9037 | thing to do it for those. */ |
c906108c | 9038 | void |
6d820c5c DJ |
9039 | getpkt (char **buf, |
9040 | long *sizeof_buf, | |
c2d11a7d | 9041 | int forever) |
d9fcf2fb | 9042 | { |
54887903 | 9043 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9044 | } |
9045 | ||
9046 | ||
9047 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9048 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9049 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9050 | rather than timing out; this is used (in synchronous mode) to wait | |
9051 | for a target that is is executing user code to stop. If FOREVER == | |
9052 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9053 | indication of this to the caller. Otherwise return the number of |
9054 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9055 | enough reason to return to the caller. *IS_NOTIF is an output |
9056 | boolean that indicates whether *BUF holds a notification or not | |
9057 | (a regular packet). */ | |
74531fed | 9058 | |
3172dc30 | 9059 | static int |
74531fed | 9060 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9061 | int expecting_notif, int *is_notif) |
c906108c | 9062 | { |
2d717e4f | 9063 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9064 | int c; |
9065 | int tries; | |
9066 | int timeout; | |
df4b58fe | 9067 | int val = -1; |
c906108c | 9068 | |
2d717e4f DJ |
9069 | /* We're reading a new response. Make sure we don't look at a |
9070 | previously cached response. */ | |
9071 | rs->cached_wait_status = 0; | |
9072 | ||
6d820c5c | 9073 | strcpy (*buf, "timeout"); |
c906108c SS |
9074 | |
9075 | if (forever) | |
74531fed PA |
9076 | timeout = watchdog > 0 ? watchdog : -1; |
9077 | else if (expecting_notif) | |
9078 | timeout = 0; /* There should already be a char in the buffer. If | |
9079 | not, bail out. */ | |
c906108c SS |
9080 | else |
9081 | timeout = remote_timeout; | |
9082 | ||
9083 | #define MAX_TRIES 3 | |
9084 | ||
74531fed PA |
9085 | /* Process any number of notifications, and then return when |
9086 | we get a packet. */ | |
9087 | for (;;) | |
c906108c | 9088 | { |
d9c43928 | 9089 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9090 | times. */ |
9091 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9092 | { |
74531fed PA |
9093 | /* This can loop forever if the remote side sends us |
9094 | characters continuously, but if it pauses, we'll get | |
9095 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9096 | we'll count that as a retry. | |
9097 | ||
9098 | Note that even when forever is set, we will only wait | |
9099 | forever prior to the start of a packet. After that, we | |
9100 | expect characters to arrive at a brisk pace. They should | |
9101 | show up within remote_timeout intervals. */ | |
9102 | do | |
9103 | c = readchar (timeout); | |
9104 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9105 | |
9106 | if (c == SERIAL_TIMEOUT) | |
9107 | { | |
74531fed PA |
9108 | if (expecting_notif) |
9109 | return -1; /* Don't complain, it's normal to not get | |
9110 | anything in this case. */ | |
9111 | ||
23860348 | 9112 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9113 | { |
78a095c3 | 9114 | remote_unpush_target (); |
598d3636 JK |
9115 | throw_error (TARGET_CLOSE_ERROR, |
9116 | _("Watchdog timeout has expired. " | |
9117 | "Target detached.")); | |
c906108c | 9118 | } |
c906108c | 9119 | if (remote_debug) |
0f71a2f6 | 9120 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9121 | } |
74531fed PA |
9122 | else |
9123 | { | |
9124 | /* We've found the start of a packet or notification. | |
9125 | Now collect the data. */ | |
9126 | val = read_frame (buf, sizeof_buf); | |
9127 | if (val >= 0) | |
9128 | break; | |
9129 | } | |
9130 | ||
c33e31fd | 9131 | remote_serial_write ("-", 1); |
c906108c | 9132 | } |
c906108c | 9133 | |
74531fed PA |
9134 | if (tries > MAX_TRIES) |
9135 | { | |
9136 | /* We have tried hard enough, and just can't receive the | |
9137 | packet/notification. Give up. */ | |
9138 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9139 | |
74531fed PA |
9140 | /* Skip the ack char if we're in no-ack mode. */ |
9141 | if (!rs->noack_mode) | |
c33e31fd | 9142 | remote_serial_write ("+", 1); |
74531fed PA |
9143 | return -1; |
9144 | } | |
c906108c | 9145 | |
74531fed PA |
9146 | /* If we got an ordinary packet, return that to our caller. */ |
9147 | if (c == '$') | |
c906108c SS |
9148 | { |
9149 | if (remote_debug) | |
43e526b9 | 9150 | { |
6f8976bf YQ |
9151 | std::string str |
9152 | = escape_buffer (*buf, | |
9153 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9154 | ||
9155 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9156 | str.c_str ()); | |
9157 | ||
567a3e54 SM |
9158 | if (val > REMOTE_DEBUG_MAX_CHAR) |
9159 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9160 | val - REMOTE_DEBUG_MAX_CHAR); | |
6e5abd65 | 9161 | |
6f8976bf | 9162 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9163 | } |
a6f3e723 SL |
9164 | |
9165 | /* Skip the ack char if we're in no-ack mode. */ | |
9166 | if (!rs->noack_mode) | |
c33e31fd | 9167 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9168 | if (is_notif != NULL) |
9169 | *is_notif = 0; | |
0876f84a | 9170 | return val; |
c906108c SS |
9171 | } |
9172 | ||
74531fed PA |
9173 | /* If we got a notification, handle it, and go back to looking |
9174 | for a packet. */ | |
9175 | else | |
9176 | { | |
9177 | gdb_assert (c == '%'); | |
9178 | ||
9179 | if (remote_debug) | |
9180 | { | |
b3ced9ba | 9181 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9182 | |
6e5abd65 PA |
9183 | fprintf_unfiltered (gdb_stdlog, |
9184 | " Notification received: %s\n", | |
b3ced9ba | 9185 | str.c_str ()); |
74531fed | 9186 | } |
fee9eda9 YQ |
9187 | if (is_notif != NULL) |
9188 | *is_notif = 1; | |
c906108c | 9189 | |
5965e028 | 9190 | handle_notification (rs->notif_state, *buf); |
c906108c | 9191 | |
74531fed | 9192 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9193 | |
74531fed | 9194 | if (expecting_notif) |
fee9eda9 | 9195 | return val; |
74531fed PA |
9196 | } |
9197 | } | |
9198 | } | |
9199 | ||
9200 | static int | |
9201 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9202 | { | |
fee9eda9 | 9203 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9204 | } |
9205 | ||
9206 | static int | |
fee9eda9 YQ |
9207 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9208 | int *is_notif) | |
74531fed | 9209 | { |
fee9eda9 YQ |
9210 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9211 | is_notif); | |
c906108c | 9212 | } |
74531fed | 9213 | |
cbb8991c DB |
9214 | /* Check whether EVENT is a fork event for the process specified |
9215 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9216 | ||
9217 | static int | |
9218 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9219 | QUEUE_ITER (stop_reply_p) *iter, | |
9220 | stop_reply_p event, | |
9221 | void *data) | |
9222 | { | |
19ba03f4 | 9223 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9224 | int parent_pid = *(int *) param->input; |
9225 | ||
9226 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9227 | { | |
9228 | struct remote_state *rs = get_remote_state (); | |
9229 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9230 | int res; | |
9231 | ||
9232 | res = remote_vkill (child_pid, rs); | |
9233 | if (res != 0) | |
9234 | error (_("Can't kill fork child process %d"), child_pid); | |
9235 | } | |
9236 | ||
9237 | return 1; | |
9238 | } | |
9239 | ||
9240 | /* Kill any new fork children of process PID that haven't been | |
9241 | processed by follow_fork. */ | |
9242 | ||
9243 | static void | |
9244 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9245 | { | |
9246 | struct thread_info *thread; | |
9247 | struct notif_client *notif = ¬if_client_stop; | |
9248 | struct queue_iter_param param; | |
9249 | ||
9250 | /* Kill the fork child threads of any threads in process PID | |
9251 | that are stopped at a fork event. */ | |
9252 | ALL_NON_EXITED_THREADS (thread) | |
9253 | { | |
9254 | struct target_waitstatus *ws = &thread->pending_follow; | |
9255 | ||
9256 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9257 | { | |
9258 | struct remote_state *rs = get_remote_state (); | |
9259 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9260 | int res; | |
9261 | ||
9262 | res = remote_vkill (child_pid, rs); | |
9263 | if (res != 0) | |
9264 | error (_("Can't kill fork child process %d"), child_pid); | |
9265 | } | |
9266 | } | |
9267 | ||
9268 | /* Check for any pending fork events (not reported or processed yet) | |
9269 | in process PID and kill those fork child threads as well. */ | |
9270 | remote_notif_get_pending_events (notif); | |
9271 | param.input = &pid; | |
9272 | param.output = NULL; | |
9273 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9274 | kill_child_of_pending_fork, ¶m); | |
9275 | } | |
9276 | ||
c906108c | 9277 | \f |
8020350c DB |
9278 | /* Target hook to kill the current inferior. */ |
9279 | ||
c906108c | 9280 | static void |
7d85a9c0 | 9281 | remote_kill (struct target_ops *ops) |
43ff13b4 | 9282 | { |
8020350c DB |
9283 | int res = -1; |
9284 | int pid = ptid_get_pid (inferior_ptid); | |
9285 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9286 | |
8020350c | 9287 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9288 | { |
8020350c DB |
9289 | /* If we're stopped while forking and we haven't followed yet, |
9290 | kill the child task. We need to do this before killing the | |
9291 | parent task because if this is a vfork then the parent will | |
9292 | be sleeping. */ | |
9293 | kill_new_fork_children (pid, rs); | |
9294 | ||
9295 | res = remote_vkill (pid, rs); | |
9296 | if (res == 0) | |
0fdf84ca | 9297 | { |
bc1e6c81 | 9298 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9299 | return; |
9300 | } | |
8020350c | 9301 | } |
0fdf84ca | 9302 | |
8020350c DB |
9303 | /* If we are in 'target remote' mode and we are killing the only |
9304 | inferior, then we will tell gdbserver to exit and unpush the | |
9305 | target. */ | |
9306 | if (res == -1 && !remote_multi_process_p (rs) | |
9307 | && number_of_live_inferiors () == 1) | |
9308 | { | |
9309 | remote_kill_k (); | |
9310 | ||
9311 | /* We've killed the remote end, we get to mourn it. If we are | |
9312 | not in extended mode, mourning the inferior also unpushes | |
9313 | remote_ops from the target stack, which closes the remote | |
9314 | connection. */ | |
bc1e6c81 | 9315 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9316 | |
9317 | return; | |
0fdf84ca | 9318 | } |
43ff13b4 | 9319 | |
8020350c | 9320 | error (_("Can't kill process")); |
43ff13b4 JM |
9321 | } |
9322 | ||
8020350c DB |
9323 | /* Send a kill request to the target using the 'vKill' packet. */ |
9324 | ||
82f73884 PA |
9325 | static int |
9326 | remote_vkill (int pid, struct remote_state *rs) | |
9327 | { | |
4082afcc | 9328 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9329 | return -1; |
9330 | ||
9331 | /* Tell the remote target to detach. */ | |
bba74b36 | 9332 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9333 | putpkt (rs->buf); |
9334 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9335 | ||
4082afcc PA |
9336 | switch (packet_ok (rs->buf, |
9337 | &remote_protocol_packets[PACKET_vKill])) | |
9338 | { | |
9339 | case PACKET_OK: | |
9340 | return 0; | |
9341 | case PACKET_ERROR: | |
9342 | return 1; | |
9343 | case PACKET_UNKNOWN: | |
9344 | return -1; | |
9345 | default: | |
9346 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9347 | } | |
82f73884 PA |
9348 | } |
9349 | ||
8020350c DB |
9350 | /* Send a kill request to the target using the 'k' packet. */ |
9351 | ||
82f73884 | 9352 | static void |
8020350c | 9353 | remote_kill_k (void) |
82f73884 | 9354 | { |
8020350c DB |
9355 | /* Catch errors so the user can quit from gdb even when we |
9356 | aren't on speaking terms with the remote system. */ | |
9357 | TRY | |
82f73884 | 9358 | { |
82f73884 | 9359 | putpkt ("k"); |
82f73884 | 9360 | } |
8020350c DB |
9361 | CATCH (ex, RETURN_MASK_ERROR) |
9362 | { | |
9363 | if (ex.error == TARGET_CLOSE_ERROR) | |
9364 | { | |
9365 | /* If we got an (EOF) error that caused the target | |
9366 | to go away, then we're done, that's what we wanted. | |
9367 | "k" is susceptible to cause a premature EOF, given | |
9368 | that the remote server isn't actually required to | |
9369 | reply to "k", and it can happen that it doesn't | |
9370 | even get to reply ACK to the "k". */ | |
9371 | return; | |
9372 | } | |
82f73884 | 9373 | |
8020350c DB |
9374 | /* Otherwise, something went wrong. We didn't actually kill |
9375 | the target. Just propagate the exception, and let the | |
9376 | user or higher layers decide what to do. */ | |
9377 | throw_exception (ex); | |
9378 | } | |
9379 | END_CATCH | |
82f73884 PA |
9380 | } |
9381 | ||
c906108c | 9382 | static void |
20f796c9 | 9383 | remote_mourn (struct target_ops *target) |
c906108c | 9384 | { |
8020350c | 9385 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9386 | |
8020350c DB |
9387 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9388 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9389 | { | |
9390 | unpush_target (target); | |
c906108c | 9391 | |
8020350c DB |
9392 | /* remote_close takes care of doing most of the clean up. */ |
9393 | generic_mourn_inferior (); | |
9394 | return; | |
9395 | } | |
c906108c | 9396 | |
e24a49d8 PA |
9397 | /* In case we got here due to an error, but we're going to stay |
9398 | connected. */ | |
9399 | rs->waiting_for_stop_reply = 0; | |
9400 | ||
dc1981d7 PA |
9401 | /* If the current general thread belonged to the process we just |
9402 | detached from or has exited, the remote side current general | |
9403 | thread becomes undefined. Considering a case like this: | |
9404 | ||
9405 | - We just got here due to a detach. | |
9406 | - The process that we're detaching from happens to immediately | |
9407 | report a global breakpoint being hit in non-stop mode, in the | |
9408 | same thread we had selected before. | |
9409 | - GDB attaches to this process again. | |
9410 | - This event happens to be the next event we handle. | |
9411 | ||
9412 | GDB would consider that the current general thread didn't need to | |
9413 | be set on the stub side (with Hg), since for all it knew, | |
9414 | GENERAL_THREAD hadn't changed. | |
9415 | ||
9416 | Notice that although in all-stop mode, the remote server always | |
9417 | sets the current thread to the thread reporting the stop event, | |
9418 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9419 | not* change the current thread when reporting a breakpoint hit, | |
9420 | due to the decoupling of event reporting and event handling. | |
9421 | ||
9422 | To keep things simple, we always invalidate our notion of the | |
9423 | current thread. */ | |
47f8a51d | 9424 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9425 | |
8020350c | 9426 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9427 | generic_mourn_inferior (); |
9428 | ||
d729566a | 9429 | if (!have_inferiors ()) |
2d717e4f | 9430 | { |
82f73884 PA |
9431 | if (!remote_multi_process_p (rs)) |
9432 | { | |
9433 | /* Check whether the target is running now - some remote stubs | |
9434 | automatically restart after kill. */ | |
9435 | putpkt ("?"); | |
9436 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9437 | ||
9438 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9439 | { | |
3e43a32a MS |
9440 | /* Assume that the target has been restarted. Set |
9441 | inferior_ptid so that bits of core GDB realizes | |
9442 | there's something here, e.g., so that the user can | |
9443 | say "kill" again. */ | |
82f73884 PA |
9444 | inferior_ptid = magic_null_ptid; |
9445 | } | |
82f73884 | 9446 | } |
2d717e4f DJ |
9447 | } |
9448 | } | |
c906108c | 9449 | |
03583c20 | 9450 | static int |
2bfc0540 | 9451 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9452 | { |
4082afcc | 9453 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9454 | } |
9455 | ||
9456 | static void | |
9457 | extended_remote_disable_randomization (int val) | |
9458 | { | |
9459 | struct remote_state *rs = get_remote_state (); | |
9460 | char *reply; | |
9461 | ||
bba74b36 YQ |
9462 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9463 | val); | |
03583c20 | 9464 | putpkt (rs->buf); |
b6bb3468 | 9465 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9466 | if (*reply == '\0') |
9467 | error (_("Target does not support QDisableRandomization.")); | |
9468 | if (strcmp (reply, "OK") != 0) | |
9469 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9470 | } | |
9471 | ||
2d717e4f | 9472 | static int |
7c5ded6a | 9473 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9474 | { |
9475 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9476 | int len; |
94585166 | 9477 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9478 | |
2d717e4f DJ |
9479 | /* If the user has disabled vRun support, or we have detected that |
9480 | support is not available, do not try it. */ | |
4082afcc | 9481 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9482 | return -1; |
424163ea | 9483 | |
2d717e4f DJ |
9484 | strcpy (rs->buf, "vRun;"); |
9485 | len = strlen (rs->buf); | |
c906108c | 9486 | |
2d717e4f DJ |
9487 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9488 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9489 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9490 | strlen (remote_exec_file)); | |
2d717e4f | 9491 | |
7c5ded6a | 9492 | if (!args.empty ()) |
2d717e4f | 9493 | { |
2d717e4f | 9494 | int i; |
2d717e4f | 9495 | |
773a1edc | 9496 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9497 | for (i = 0; argv[i] != NULL; i++) |
9498 | { | |
9499 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9500 | error (_("Argument list too long for run packet")); | |
9501 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9502 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9503 | strlen (argv[i])); | |
2d717e4f | 9504 | } |
2d717e4f DJ |
9505 | } |
9506 | ||
9507 | rs->buf[len++] = '\0'; | |
9508 | ||
9509 | putpkt (rs->buf); | |
9510 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9511 | ||
4082afcc | 9512 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9513 | { |
4082afcc | 9514 | case PACKET_OK: |
3405876a | 9515 | /* We have a wait response. All is well. */ |
2d717e4f | 9516 | return 0; |
4082afcc PA |
9517 | case PACKET_UNKNOWN: |
9518 | return -1; | |
9519 | case PACKET_ERROR: | |
2d717e4f DJ |
9520 | if (remote_exec_file[0] == '\0') |
9521 | error (_("Running the default executable on the remote target failed; " | |
9522 | "try \"set remote exec-file\"?")); | |
9523 | else | |
9524 | error (_("Running \"%s\" on the remote target failed"), | |
9525 | remote_exec_file); | |
4082afcc PA |
9526 | default: |
9527 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9528 | } |
c906108c SS |
9529 | } |
9530 | ||
0a2dde4a SDJ |
9531 | /* Helper function to send set/unset environment packets. ACTION is |
9532 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9533 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9534 | sent. */ | |
9535 | ||
9536 | static void | |
9537 | send_environment_packet (struct remote_state *rs, | |
9538 | const char *action, | |
9539 | const char *packet, | |
9540 | const char *value) | |
9541 | { | |
9542 | /* Convert the environment variable to an hex string, which | |
9543 | is the best format to be transmitted over the wire. */ | |
9544 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9545 | strlen (value)); | |
9546 | ||
9547 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9548 | "%s:%s", packet, encoded_value.c_str ()); | |
9549 | ||
9550 | putpkt (rs->buf); | |
9551 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9552 | if (strcmp (rs->buf, "OK") != 0) | |
9553 | warning (_("Unable to %s environment variable '%s' on remote."), | |
9554 | action, value); | |
9555 | } | |
9556 | ||
9557 | /* Helper function to handle the QEnvironment* packets. */ | |
9558 | ||
9559 | static void | |
9560 | extended_remote_environment_support (struct remote_state *rs) | |
9561 | { | |
9562 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) | |
9563 | { | |
9564 | putpkt ("QEnvironmentReset"); | |
9565 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9566 | if (strcmp (rs->buf, "OK") != 0) | |
9567 | warning (_("Unable to reset environment on remote.")); | |
9568 | } | |
9569 | ||
9570 | gdb_environ *e = ¤t_inferior ()->environment; | |
9571 | ||
9572 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9573 | for (const std::string &el : e->user_set_env ()) | |
9574 | send_environment_packet (rs, "set", "QEnvironmentHexEncoded", | |
9575 | el.c_str ()); | |
9576 | ||
9577 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9578 | for (const std::string &el : e->user_unset_env ()) | |
9579 | send_environment_packet (rs, "unset", "QEnvironmentUnset", el.c_str ()); | |
9580 | } | |
9581 | ||
bc3b087d SDJ |
9582 | /* Helper function to set the current working directory for the |
9583 | inferior in the remote target. */ | |
9584 | ||
9585 | static void | |
9586 | extended_remote_set_inferior_cwd (struct remote_state *rs) | |
9587 | { | |
9588 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
9589 | { | |
9590 | const char *inferior_cwd = get_inferior_cwd (); | |
9591 | ||
9592 | if (inferior_cwd != NULL) | |
9593 | { | |
9594 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
9595 | strlen (inferior_cwd)); | |
9596 | ||
9597 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9598 | "QSetWorkingDir:%s", hexpath.c_str ()); | |
9599 | } | |
9600 | else | |
9601 | { | |
9602 | /* An empty inferior_cwd means that the user wants us to | |
9603 | reset the remote server's inferior's cwd. */ | |
9604 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9605 | "QSetWorkingDir:"); | |
9606 | } | |
9607 | ||
9608 | putpkt (rs->buf); | |
9609 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9610 | if (packet_ok (rs->buf, | |
9611 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
9612 | != PACKET_OK) | |
9613 | error (_("\ | |
9614 | Remote replied unexpectedly while setting the inferior's working\n\ | |
9615 | directory: %s"), | |
9616 | rs->buf); | |
9617 | ||
9618 | } | |
9619 | } | |
9620 | ||
2d717e4f DJ |
9621 | /* In the extended protocol we want to be able to do things like |
9622 | "run" and have them basically work as expected. So we need | |
9623 | a special create_inferior function. We support changing the | |
9624 | executable file and the command line arguments, but not the | |
9625 | environment. */ | |
9626 | ||
43ff13b4 | 9627 | static void |
77a19445 | 9628 | extended_remote_create_inferior (struct target_ops *ops, |
7c5ded6a SDJ |
9629 | const char *exec_file, |
9630 | const std::string &args, | |
77a19445 | 9631 | char **env, int from_tty) |
43ff13b4 | 9632 | { |
3405876a PA |
9633 | int run_worked; |
9634 | char *stop_reply; | |
9635 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9636 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9637 | |
43ff13b4 | 9638 | /* If running asynchronously, register the target file descriptor |
23860348 | 9639 | with the event loop. */ |
75c99385 | 9640 | if (target_can_async_p ()) |
6a3753b3 | 9641 | target_async (1); |
43ff13b4 | 9642 | |
03583c20 | 9643 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9644 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9645 | extended_remote_disable_randomization (disable_randomization); |
9646 | ||
aefd8b33 SDJ |
9647 | /* If startup-with-shell is on, we inform gdbserver to start the |
9648 | remote inferior using a shell. */ | |
9649 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9650 | { | |
9651 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9652 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9653 | putpkt (rs->buf); | |
9654 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9655 | if (strcmp (rs->buf, "OK") != 0) | |
9656 | error (_("\ | |
9657 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9658 | rs->buf); | |
9659 | } | |
9660 | ||
0a2dde4a SDJ |
9661 | extended_remote_environment_support (rs); |
9662 | ||
bc3b087d SDJ |
9663 | extended_remote_set_inferior_cwd (rs); |
9664 | ||
43ff13b4 | 9665 | /* Now restart the remote server. */ |
3405876a PA |
9666 | run_worked = extended_remote_run (args) != -1; |
9667 | if (!run_worked) | |
2d717e4f DJ |
9668 | { |
9669 | /* vRun was not supported. Fail if we need it to do what the | |
9670 | user requested. */ | |
9671 | if (remote_exec_file[0]) | |
9672 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9673 | if (!args.empty ()) |
2d717e4f | 9674 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9675 | |
2d717e4f DJ |
9676 | /* Fall back to "R". */ |
9677 | extended_remote_restart (); | |
9678 | } | |
424163ea | 9679 | |
6c95b8df PA |
9680 | if (!have_inferiors ()) |
9681 | { | |
9682 | /* Clean up from the last time we ran, before we mark the target | |
9683 | running again. This will mark breakpoints uninserted, and | |
9684 | get_offsets may insert breakpoints. */ | |
9685 | init_thread_list (); | |
9686 | init_wait_for_inferior (); | |
9687 | } | |
45280a52 | 9688 | |
3405876a PA |
9689 | /* vRun's success return is a stop reply. */ |
9690 | stop_reply = run_worked ? rs->buf : NULL; | |
9691 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9692 | |
2d717e4f DJ |
9693 | /* Get updated offsets, if the stub uses qOffsets. */ |
9694 | get_offsets (); | |
2d717e4f | 9695 | } |
c906108c | 9696 | \f |
c5aa993b | 9697 | |
b775012e LM |
9698 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9699 | the list of conditions (in agent expression bytecode format), if any, the | |
9700 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9701 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9702 | |
9703 | static int | |
9704 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9705 | struct bp_target_info *bp_tgt, char *buf, |
9706 | char *buf_end) | |
b775012e | 9707 | { |
3cde5c42 | 9708 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
9709 | return 0; |
9710 | ||
9711 | buf += strlen (buf); | |
bba74b36 | 9712 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9713 | buf++; |
9714 | ||
83621223 | 9715 | /* Send conditions to the target. */ |
d538e36d | 9716 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 9717 | { |
bba74b36 | 9718 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 9719 | buf += strlen (buf); |
3cde5c42 | 9720 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
9721 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9722 | *buf = '\0'; | |
9723 | } | |
b775012e LM |
9724 | return 0; |
9725 | } | |
9726 | ||
d3ce09f5 SS |
9727 | static void |
9728 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9729 | struct bp_target_info *bp_tgt, char *buf) | |
9730 | { | |
3cde5c42 | 9731 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
9732 | return; |
9733 | ||
9734 | buf += strlen (buf); | |
9735 | ||
9736 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9737 | buf += strlen (buf); | |
9738 | ||
9739 | /* Concatenate all the agent expressions that are commands into the | |
9740 | cmds parameter. */ | |
df97be55 | 9741 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
9742 | { |
9743 | sprintf (buf, "X%x,", aexpr->len); | |
9744 | buf += strlen (buf); | |
3cde5c42 | 9745 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
9746 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9747 | *buf = '\0'; | |
9748 | } | |
d3ce09f5 SS |
9749 | } |
9750 | ||
8181d85f DJ |
9751 | /* Insert a breakpoint. On targets that have software breakpoint |
9752 | support, we ask the remote target to do the work; on targets | |
9753 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9754 | |
9755 | static int | |
3db08215 MM |
9756 | remote_insert_breakpoint (struct target_ops *ops, |
9757 | struct gdbarch *gdbarch, | |
a6d9a66e | 9758 | struct bp_target_info *bp_tgt) |
c906108c | 9759 | { |
d471ea57 AC |
9760 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9761 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9762 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9763 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9764 | |
4082afcc | 9765 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9766 | { |
0d5ed153 | 9767 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9768 | struct remote_state *rs; |
bba74b36 | 9769 | char *p, *endbuf; |
4fff2411 | 9770 | |
28439a30 PA |
9771 | /* Make sure the remote is pointing at the right process, if |
9772 | necessary. */ | |
9773 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9774 | set_general_process (); | |
9775 | ||
4fff2411 JZ |
9776 | rs = get_remote_state (); |
9777 | p = rs->buf; | |
bba74b36 | 9778 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9779 | |
96baa820 JM |
9780 | *(p++) = 'Z'; |
9781 | *(p++) = '0'; | |
9782 | *(p++) = ','; | |
7c0f6dcc | 9783 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9784 | p += hexnumstr (p, addr); |
579c6ad9 | 9785 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9786 | |
efcc2da7 | 9787 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9788 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9789 | |
78eff0ec | 9790 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9791 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9792 | ||
6d820c5c DJ |
9793 | putpkt (rs->buf); |
9794 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9795 | |
6d820c5c | 9796 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9797 | { |
d471ea57 AC |
9798 | case PACKET_ERROR: |
9799 | return -1; | |
9800 | case PACKET_OK: | |
9801 | return 0; | |
9802 | case PACKET_UNKNOWN: | |
9803 | break; | |
96baa820 JM |
9804 | } |
9805 | } | |
c906108c | 9806 | |
0000e5cc PA |
9807 | /* If this breakpoint has target-side commands but this stub doesn't |
9808 | support Z0 packets, throw error. */ | |
3cde5c42 | 9809 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
9810 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
9811 | Target doesn't support breakpoints that have target side commands.")); | |
9812 | ||
3db08215 | 9813 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9814 | } |
9815 | ||
9816 | static int | |
3db08215 MM |
9817 | remote_remove_breakpoint (struct target_ops *ops, |
9818 | struct gdbarch *gdbarch, | |
73971819 PA |
9819 | struct bp_target_info *bp_tgt, |
9820 | enum remove_bp_reason reason) | |
c906108c | 9821 | { |
8181d85f | 9822 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9823 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9824 | |
4082afcc | 9825 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9826 | { |
6d820c5c | 9827 | char *p = rs->buf; |
bba74b36 | 9828 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9829 | |
28439a30 PA |
9830 | /* Make sure the remote is pointing at the right process, if |
9831 | necessary. */ | |
9832 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9833 | set_general_process (); | |
9834 | ||
96baa820 JM |
9835 | *(p++) = 'z'; |
9836 | *(p++) = '0'; | |
9837 | *(p++) = ','; | |
9838 | ||
8181d85f DJ |
9839 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9840 | p += hexnumstr (p, addr); | |
579c6ad9 | 9841 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9842 | |
6d820c5c DJ |
9843 | putpkt (rs->buf); |
9844 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9845 | |
6d820c5c | 9846 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9847 | } |
9848 | ||
73971819 | 9849 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt, reason); |
c906108c SS |
9850 | } |
9851 | ||
f486487f | 9852 | static enum Z_packet_type |
d471ea57 AC |
9853 | watchpoint_to_Z_packet (int type) |
9854 | { | |
9855 | switch (type) | |
9856 | { | |
9857 | case hw_write: | |
bb858e6a | 9858 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9859 | break; |
9860 | case hw_read: | |
bb858e6a | 9861 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9862 | break; |
9863 | case hw_access: | |
bb858e6a | 9864 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9865 | break; |
9866 | default: | |
8e65ff28 | 9867 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9868 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9869 | } |
9870 | } | |
9871 | ||
3c3bea1c | 9872 | static int |
f486487f SM |
9873 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9874 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9875 | { |
d01949b6 | 9876 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9877 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9878 | char *p; |
d471ea57 | 9879 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9880 | |
4082afcc | 9881 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9882 | return 1; |
802188a7 | 9883 | |
28439a30 PA |
9884 | /* Make sure the remote is pointing at the right process, if |
9885 | necessary. */ | |
9886 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9887 | set_general_process (); | |
9888 | ||
bba74b36 | 9889 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9890 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9891 | addr = remote_address_masked (addr); |
9892 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9893 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9894 | |
6d820c5c DJ |
9895 | putpkt (rs->buf); |
9896 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9897 | |
6d820c5c | 9898 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9899 | { |
9900 | case PACKET_ERROR: | |
d471ea57 | 9901 | return -1; |
85d721b8 PA |
9902 | case PACKET_UNKNOWN: |
9903 | return 1; | |
d471ea57 AC |
9904 | case PACKET_OK: |
9905 | return 0; | |
9906 | } | |
8e65ff28 | 9907 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9908 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9909 | } |
9910 | ||
283002cf MR |
9911 | static int |
9912 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9913 | CORE_ADDR start, int length) | |
9914 | { | |
9915 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9916 | ||
9917 | return diff < length; | |
9918 | } | |
9919 | ||
d471ea57 | 9920 | |
3c3bea1c | 9921 | static int |
f486487f SM |
9922 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9923 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9924 | { |
d01949b6 | 9925 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9926 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9927 | char *p; |
d471ea57 AC |
9928 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9929 | ||
4082afcc | 9930 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9931 | return -1; |
802188a7 | 9932 | |
28439a30 PA |
9933 | /* Make sure the remote is pointing at the right process, if |
9934 | necessary. */ | |
9935 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9936 | set_general_process (); | |
9937 | ||
bba74b36 | 9938 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9939 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9940 | addr = remote_address_masked (addr); |
9941 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9942 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9943 | putpkt (rs->buf); |
9944 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9945 | |
6d820c5c | 9946 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9947 | { |
9948 | case PACKET_ERROR: | |
9949 | case PACKET_UNKNOWN: | |
9950 | return -1; | |
9951 | case PACKET_OK: | |
9952 | return 0; | |
9953 | } | |
8e65ff28 | 9954 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9955 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9956 | } |
9957 | ||
3c3bea1c | 9958 | |
501eef12 | 9959 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9960 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9961 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9962 | |
480a3f21 | 9963 | static int |
31568a15 TT |
9964 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9965 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9966 | { |
9967 | if (remote_hw_watchpoint_length_limit == 0) | |
9968 | return 0; | |
9969 | else if (remote_hw_watchpoint_length_limit < 0) | |
9970 | return 1; | |
9971 | else if (len <= remote_hw_watchpoint_length_limit) | |
9972 | return 1; | |
9973 | else | |
9974 | return 0; | |
9975 | } | |
9976 | ||
b9362cc7 | 9977 | static int |
5461485a | 9978 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9979 | enum bptype type, int cnt, int ot) |
96baa820 | 9980 | { |
3c3bea1c GS |
9981 | if (type == bp_hardware_breakpoint) |
9982 | { | |
9983 | if (remote_hw_breakpoint_limit == 0) | |
9984 | return 0; | |
501eef12 AC |
9985 | else if (remote_hw_breakpoint_limit < 0) |
9986 | return 1; | |
3c3bea1c GS |
9987 | else if (cnt <= remote_hw_breakpoint_limit) |
9988 | return 1; | |
9989 | } | |
9990 | else | |
9991 | { | |
9992 | if (remote_hw_watchpoint_limit == 0) | |
9993 | return 0; | |
501eef12 AC |
9994 | else if (remote_hw_watchpoint_limit < 0) |
9995 | return 1; | |
3c3bea1c GS |
9996 | else if (ot) |
9997 | return -1; | |
9998 | else if (cnt <= remote_hw_watchpoint_limit) | |
9999 | return 1; | |
10000 | } | |
10001 | return -1; | |
10002 | } | |
10003 | ||
f7e6eed5 PA |
10004 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10005 | ||
10006 | static int | |
10007 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10008 | { | |
799a2abe | 10009 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10010 | |
799a2abe | 10011 | return (thread->priv != NULL |
7aabaf9d SM |
10012 | && (get_remote_thread_info (thread)->stop_reason |
10013 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10014 | } |
10015 | ||
10016 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10017 | remote. */ | |
10018 | ||
10019 | static int | |
10020 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10021 | { | |
f7e6eed5 PA |
10022 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10023 | } | |
10024 | ||
10025 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10026 | ||
10027 | static int | |
10028 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10029 | { | |
799a2abe | 10030 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10031 | |
799a2abe | 10032 | return (thread->priv != NULL |
7aabaf9d SM |
10033 | && (get_remote_thread_info (thread)->stop_reason |
10034 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10035 | } |
10036 | ||
10037 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10038 | remote. */ | |
10039 | ||
10040 | static int | |
10041 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10042 | { | |
f7e6eed5 PA |
10043 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10044 | } | |
10045 | ||
b9362cc7 | 10046 | static int |
6a109b6b | 10047 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 10048 | { |
799a2abe | 10049 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10050 | |
799a2abe | 10051 | return (thread->priv != NULL |
7aabaf9d SM |
10052 | && (get_remote_thread_info (thread)->stop_reason |
10053 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10054 | } |
10055 | ||
4aa7a7f5 JJ |
10056 | static int |
10057 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 10058 | { |
799a2abe | 10059 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10060 | |
799a2abe | 10061 | if (thread->priv != NULL |
7aabaf9d SM |
10062 | && (get_remote_thread_info (thread)->stop_reason |
10063 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10064 | { |
7aabaf9d | 10065 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
799a2abe | 10066 | return 1; |
4aa7a7f5 JJ |
10067 | } |
10068 | ||
799a2abe | 10069 | return 0; |
3c3bea1c GS |
10070 | } |
10071 | ||
10072 | ||
10073 | static int | |
23a26771 | 10074 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10075 | struct bp_target_info *bp_tgt) |
3c3bea1c | 10076 | { |
0d5ed153 | 10077 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10078 | struct remote_state *rs; |
bba74b36 | 10079 | char *p, *endbuf; |
dd61ec5c | 10080 | char *message; |
3c3bea1c | 10081 | |
4082afcc | 10082 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10083 | return -1; |
2bc416ba | 10084 | |
28439a30 PA |
10085 | /* Make sure the remote is pointing at the right process, if |
10086 | necessary. */ | |
10087 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10088 | set_general_process (); | |
10089 | ||
4fff2411 JZ |
10090 | rs = get_remote_state (); |
10091 | p = rs->buf; | |
bba74b36 | 10092 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10093 | |
96baa820 JM |
10094 | *(p++) = 'Z'; |
10095 | *(p++) = '1'; | |
10096 | *(p++) = ','; | |
802188a7 | 10097 | |
0d5ed153 | 10098 | addr = remote_address_masked (addr); |
96baa820 | 10099 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10100 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10101 | |
efcc2da7 | 10102 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 10103 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10104 | |
78eff0ec | 10105 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
10106 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10107 | ||
6d820c5c DJ |
10108 | putpkt (rs->buf); |
10109 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10110 | |
6d820c5c | 10111 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10112 | { |
10113 | case PACKET_ERROR: | |
dd61ec5c MW |
10114 | if (rs->buf[1] == '.') |
10115 | { | |
10116 | message = strchr (rs->buf + 2, '.'); | |
10117 | if (message) | |
0316657e | 10118 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10119 | } |
10120 | return -1; | |
d471ea57 AC |
10121 | case PACKET_UNKNOWN: |
10122 | return -1; | |
10123 | case PACKET_OK: | |
10124 | return 0; | |
10125 | } | |
8e65ff28 | 10126 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10127 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10128 | } |
10129 | ||
d471ea57 | 10130 | |
802188a7 | 10131 | static int |
a64dc96c | 10132 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10133 | struct bp_target_info *bp_tgt) |
96baa820 | 10134 | { |
8181d85f | 10135 | CORE_ADDR addr; |
d01949b6 | 10136 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10137 | char *p = rs->buf; |
bba74b36 | 10138 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10139 | |
4082afcc | 10140 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10141 | return -1; |
802188a7 | 10142 | |
28439a30 PA |
10143 | /* Make sure the remote is pointing at the right process, if |
10144 | necessary. */ | |
10145 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10146 | set_general_process (); | |
10147 | ||
96baa820 JM |
10148 | *(p++) = 'z'; |
10149 | *(p++) = '1'; | |
10150 | *(p++) = ','; | |
802188a7 | 10151 | |
8181d85f | 10152 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10153 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10154 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10155 | |
6d820c5c DJ |
10156 | putpkt (rs->buf); |
10157 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10158 | |
6d820c5c | 10159 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10160 | { |
10161 | case PACKET_ERROR: | |
10162 | case PACKET_UNKNOWN: | |
10163 | return -1; | |
10164 | case PACKET_OK: | |
10165 | return 0; | |
10166 | } | |
8e65ff28 | 10167 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10168 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10169 | } |
96baa820 | 10170 | |
4a5e7a5b PA |
10171 | /* Verify memory using the "qCRC:" request. */ |
10172 | ||
10173 | static int | |
10174 | remote_verify_memory (struct target_ops *ops, | |
10175 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
10176 | { | |
10177 | struct remote_state *rs = get_remote_state (); | |
10178 | unsigned long host_crc, target_crc; | |
10179 | char *tmp; | |
10180 | ||
936d2992 PA |
10181 | /* It doesn't make sense to use qCRC if the remote target is |
10182 | connected but not running. */ | |
10183 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10184 | { | |
10185 | enum packet_result result; | |
28439a30 | 10186 | |
936d2992 PA |
10187 | /* Make sure the remote is pointing at the right process. */ |
10188 | set_general_process (); | |
4a5e7a5b | 10189 | |
936d2992 PA |
10190 | /* FIXME: assumes lma can fit into long. */ |
10191 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10192 | (long) lma, (long) size); | |
10193 | putpkt (rs->buf); | |
4a5e7a5b | 10194 | |
936d2992 PA |
10195 | /* Be clever; compute the host_crc before waiting for target |
10196 | reply. */ | |
10197 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10198 | ||
10199 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10200 | |
936d2992 PA |
10201 | result = packet_ok (rs->buf, |
10202 | &remote_protocol_packets[PACKET_qCRC]); | |
10203 | if (result == PACKET_ERROR) | |
10204 | return -1; | |
10205 | else if (result == PACKET_OK) | |
10206 | { | |
10207 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10208 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10209 | |
936d2992 PA |
10210 | return (host_crc == target_crc); |
10211 | } | |
10212 | } | |
4a5e7a5b | 10213 | |
936d2992 | 10214 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
10215 | } |
10216 | ||
c906108c SS |
10217 | /* compare-sections command |
10218 | ||
10219 | With no arguments, compares each loadable section in the exec bfd | |
10220 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10221 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10222 | |
c906108c | 10223 | static void |
ac88e2de | 10224 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10225 | { |
10226 | asection *s; | |
ce359b09 | 10227 | const char *sectname; |
c906108c SS |
10228 | bfd_size_type size; |
10229 | bfd_vma lma; | |
10230 | int matched = 0; | |
10231 | int mismatched = 0; | |
4a5e7a5b | 10232 | int res; |
95cf3b38 | 10233 | int read_only = 0; |
c906108c SS |
10234 | |
10235 | if (!exec_bfd) | |
8a3fe4f8 | 10236 | error (_("command cannot be used without an exec file")); |
c906108c | 10237 | |
28439a30 PA |
10238 | /* Make sure the remote is pointing at the right process. */ |
10239 | set_general_process (); | |
10240 | ||
95cf3b38 DT |
10241 | if (args != NULL && strcmp (args, "-r") == 0) |
10242 | { | |
10243 | read_only = 1; | |
10244 | args = NULL; | |
10245 | } | |
10246 | ||
c5aa993b | 10247 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10248 | { |
10249 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10250 | continue; /* Skip non-loadable section. */ |
c906108c | 10251 | |
95cf3b38 DT |
10252 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10253 | continue; /* Skip writeable sections */ | |
10254 | ||
2c500098 | 10255 | size = bfd_get_section_size (s); |
c906108c | 10256 | if (size == 0) |
0df8b418 | 10257 | continue; /* Skip zero-length section. */ |
c906108c | 10258 | |
ce359b09 | 10259 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10260 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10261 | continue; /* Not the section selected by user. */ |
c906108c | 10262 | |
0df8b418 | 10263 | matched = 1; /* Do this section. */ |
c906108c | 10264 | lma = s->lma; |
c906108c | 10265 | |
b80406ac TT |
10266 | gdb::byte_vector sectdata (size); |
10267 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10268 | |
b80406ac | 10269 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10270 | |
10271 | if (res == -1) | |
5af949e3 | 10272 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10273 | paddress (target_gdbarch (), lma), |
10274 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10275 | |
5af949e3 | 10276 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10277 | paddress (target_gdbarch (), lma), |
10278 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10279 | if (res) |
c906108c SS |
10280 | printf_filtered ("matched.\n"); |
10281 | else | |
c5aa993b JM |
10282 | { |
10283 | printf_filtered ("MIS-MATCHED!\n"); | |
10284 | mismatched++; | |
10285 | } | |
c906108c SS |
10286 | } |
10287 | if (mismatched > 0) | |
936d2992 | 10288 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10289 | the loaded file\n")); |
c906108c | 10290 | if (args && !matched) |
a3f17187 | 10291 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10292 | } |
10293 | ||
0e7f50da UW |
10294 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10295 | into remote target. The number of bytes written to the remote | |
10296 | target is returned, or -1 for error. */ | |
10297 | ||
9b409511 | 10298 | static enum target_xfer_status |
0e7f50da UW |
10299 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
10300 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 10301 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10302 | struct packet_config *packet) |
10303 | { | |
10304 | int i, buf_len; | |
10305 | ULONGEST n; | |
0e7f50da UW |
10306 | struct remote_state *rs = get_remote_state (); |
10307 | int max_size = get_memory_write_packet_size (); | |
10308 | ||
7cc244de | 10309 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10310 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10311 | |
10312 | /* Insert header. */ | |
10313 | i = snprintf (rs->buf, max_size, | |
10314 | "qXfer:%s:write:%s:%s:", | |
10315 | object_name, annex ? annex : "", | |
10316 | phex_nz (offset, sizeof offset)); | |
10317 | max_size -= (i + 1); | |
10318 | ||
10319 | /* Escape as much data as fits into rs->buf. */ | |
10320 | buf_len = remote_escape_output | |
124e13d9 | 10321 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10322 | |
10323 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10324 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10325 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10326 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10327 | |
10328 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10329 | |
10330 | *xfered_len = n; | |
92ffd475 | 10331 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10332 | } |
10333 | ||
0876f84a DJ |
10334 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10335 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10336 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10337 | The number of bytes read may be less than LEN without indicating an | |
10338 | EOF. PACKET is checked and updated to indicate whether the remote | |
10339 | target supports this object. */ | |
10340 | ||
9b409511 | 10341 | static enum target_xfer_status |
0876f84a DJ |
10342 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
10343 | const char *annex, | |
10344 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10345 | ULONGEST *xfered_len, |
0876f84a DJ |
10346 | struct packet_config *packet) |
10347 | { | |
0876f84a | 10348 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10349 | LONGEST i, n, packet_len; |
10350 | ||
7cc244de | 10351 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10352 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10353 | |
10354 | /* Check whether we've cached an end-of-object packet that matches | |
10355 | this request. */ | |
8e88304f | 10356 | if (rs->finished_object) |
0876f84a | 10357 | { |
8e88304f TT |
10358 | if (strcmp (object_name, rs->finished_object) == 0 |
10359 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10360 | && offset == rs->finished_offset) | |
9b409511 YQ |
10361 | return TARGET_XFER_EOF; |
10362 | ||
0876f84a DJ |
10363 | |
10364 | /* Otherwise, we're now reading something different. Discard | |
10365 | the cache. */ | |
8e88304f TT |
10366 | xfree (rs->finished_object); |
10367 | xfree (rs->finished_annex); | |
10368 | rs->finished_object = NULL; | |
10369 | rs->finished_annex = NULL; | |
0876f84a DJ |
10370 | } |
10371 | ||
10372 | /* Request only enough to fit in a single packet. The actual data | |
10373 | may not, since we don't know how much of it will need to be escaped; | |
10374 | the target is free to respond with slightly less data. We subtract | |
10375 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10376 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10377 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10378 | object_name, annex ? annex : "", | |
10379 | phex_nz (offset, sizeof offset), | |
10380 | phex_nz (n, sizeof n)); | |
10381 | i = putpkt (rs->buf); | |
10382 | if (i < 0) | |
2ed4b548 | 10383 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10384 | |
10385 | rs->buf[0] = '\0'; | |
10386 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10387 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10388 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10389 | |
10390 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10391 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10392 | ||
10393 | /* 'm' means there is (or at least might be) more data after this | |
10394 | batch. That does not make sense unless there's at least one byte | |
10395 | of data in this reply. */ | |
10396 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10397 | error (_("Remote qXfer reply contained no data.")); | |
10398 | ||
10399 | /* Got some data. */ | |
bc20a4af PA |
10400 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10401 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10402 | |
10403 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10404 | or possibly empty. If we have the final block of a non-empty |
10405 | object, record this fact to bypass a subsequent partial read. */ | |
10406 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10407 | { |
8e88304f TT |
10408 | rs->finished_object = xstrdup (object_name); |
10409 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10410 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10411 | } |
10412 | ||
9b409511 YQ |
10413 | if (i == 0) |
10414 | return TARGET_XFER_EOF; | |
10415 | else | |
10416 | { | |
10417 | *xfered_len = i; | |
10418 | return TARGET_XFER_OK; | |
10419 | } | |
0876f84a DJ |
10420 | } |
10421 | ||
9b409511 | 10422 | static enum target_xfer_status |
4b8a223f | 10423 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 10424 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
10425 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
10426 | ULONGEST *xfered_len) | |
c906108c | 10427 | { |
82f73884 | 10428 | struct remote_state *rs; |
c906108c | 10429 | int i; |
6d820c5c | 10430 | char *p2; |
1e3ff5ad | 10431 | char query_type; |
124e13d9 | 10432 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10433 | |
e6e4e701 | 10434 | set_remote_traceframe (); |
82f73884 PA |
10435 | set_general_thread (inferior_ptid); |
10436 | ||
10437 | rs = get_remote_state (); | |
10438 | ||
b2182ed2 | 10439 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10440 | if (object == TARGET_OBJECT_MEMORY) |
10441 | { | |
2d717e4f DJ |
10442 | /* If the remote target is connected but not running, we should |
10443 | pass this request down to a lower stratum (e.g. the executable | |
10444 | file). */ | |
10445 | if (!target_has_execution) | |
9b409511 | 10446 | return TARGET_XFER_EOF; |
2d717e4f | 10447 | |
21e3b9b9 | 10448 | if (writebuf != NULL) |
124e13d9 SM |
10449 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10450 | xfered_len); | |
21e3b9b9 | 10451 | else |
124e13d9 SM |
10452 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
10453 | xfered_len); | |
21e3b9b9 DJ |
10454 | } |
10455 | ||
0df8b418 | 10456 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10457 | if (object == TARGET_OBJECT_SPU) |
10458 | { | |
10459 | if (readbuf) | |
10460 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
10461 | xfered_len, &remote_protocol_packets |
10462 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
10463 | else |
10464 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
10465 | xfered_len, &remote_protocol_packets |
10466 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10467 | } |
10468 | ||
4aa995e1 PA |
10469 | /* Handle extra signal info using qxfer packets. */ |
10470 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10471 | { | |
10472 | if (readbuf) | |
10473 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10474 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10475 | [PACKET_qXfer_siginfo_read]); |
10476 | else | |
3e43a32a | 10477 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10478 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10479 | &remote_protocol_packets |
10480 | [PACKET_qXfer_siginfo_write]); | |
10481 | } | |
10482 | ||
0fb4aa4b PA |
10483 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10484 | { | |
10485 | if (readbuf) | |
3e43a32a | 10486 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10487 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10488 | &remote_protocol_packets |
10489 | [PACKET_qXfer_statictrace_read]); | |
10490 | else | |
2ed4b548 | 10491 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10492 | } |
10493 | ||
a76d924d DJ |
10494 | /* Only handle flash writes. */ |
10495 | if (writebuf != NULL) | |
10496 | { | |
a76d924d DJ |
10497 | switch (object) |
10498 | { | |
10499 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10500 | return remote_flash_write (ops, offset, len, xfered_len, |
10501 | writebuf); | |
a76d924d DJ |
10502 | |
10503 | default: | |
2ed4b548 | 10504 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10505 | } |
10506 | } | |
4b8a223f | 10507 | |
1e3ff5ad AC |
10508 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10509 | objects!!! Instead specify new query packets. */ | |
10510 | switch (object) | |
c906108c | 10511 | { |
1e3ff5ad AC |
10512 | case TARGET_OBJECT_AVR: |
10513 | query_type = 'R'; | |
10514 | break; | |
802188a7 RM |
10515 | |
10516 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10517 | gdb_assert (annex == NULL); |
10518 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10519 | xfered_len, |
0876f84a | 10520 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10521 | |
23181151 DJ |
10522 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10523 | return remote_read_qxfer | |
9b409511 | 10524 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10525 | &remote_protocol_packets[PACKET_qXfer_features]); |
10526 | ||
cfa9d6d9 DJ |
10527 | case TARGET_OBJECT_LIBRARIES: |
10528 | return remote_read_qxfer | |
9b409511 | 10529 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10530 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10531 | ||
2268b414 JK |
10532 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10533 | return remote_read_qxfer | |
9b409511 | 10534 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10535 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10536 | ||
fd79ecee DJ |
10537 | case TARGET_OBJECT_MEMORY_MAP: |
10538 | gdb_assert (annex == NULL); | |
10539 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10540 | xfered_len, |
fd79ecee DJ |
10541 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10542 | ||
07e059b5 VP |
10543 | case TARGET_OBJECT_OSDATA: |
10544 | /* Should only get here if we're connected. */ | |
5d93a237 | 10545 | gdb_assert (rs->remote_desc); |
07e059b5 | 10546 | return remote_read_qxfer |
9b409511 | 10547 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10548 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10549 | ||
dc146f7c VP |
10550 | case TARGET_OBJECT_THREADS: |
10551 | gdb_assert (annex == NULL); | |
10552 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10553 | xfered_len, |
dc146f7c VP |
10554 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10555 | ||
b3b9301e PA |
10556 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10557 | gdb_assert (annex == NULL); | |
10558 | return remote_read_qxfer | |
9b409511 | 10559 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10560 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10561 | |
10562 | case TARGET_OBJECT_FDPIC: | |
10563 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10564 | xfered_len, |
78d85199 | 10565 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10566 | |
10567 | case TARGET_OBJECT_OPENVMS_UIB: | |
10568 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10569 | xfered_len, |
169081d0 TG |
10570 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10571 | ||
9accd112 MM |
10572 | case TARGET_OBJECT_BTRACE: |
10573 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10574 | xfered_len, |
9accd112 MM |
10575 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10576 | ||
f4abbc16 MM |
10577 | case TARGET_OBJECT_BTRACE_CONF: |
10578 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10579 | len, xfered_len, | |
10580 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10581 | ||
c78fa86a GB |
10582 | case TARGET_OBJECT_EXEC_FILE: |
10583 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10584 | len, xfered_len, | |
10585 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10586 | ||
1e3ff5ad | 10587 | default: |
2ed4b548 | 10588 | return TARGET_XFER_E_IO; |
c906108c SS |
10589 | } |
10590 | ||
0df8b418 | 10591 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10592 | large enough let the caller deal with it. */ |
ea9c271d | 10593 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10594 | return TARGET_XFER_E_IO; |
ea9c271d | 10595 | len = get_remote_packet_size (); |
1e3ff5ad | 10596 | |
23860348 | 10597 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10598 | if (!rs->remote_desc) |
8a3fe4f8 | 10599 | error (_("remote query is only available after target open")); |
c906108c | 10600 | |
1e3ff5ad | 10601 | gdb_assert (annex != NULL); |
4b8a223f | 10602 | gdb_assert (readbuf != NULL); |
c906108c | 10603 | |
6d820c5c | 10604 | p2 = rs->buf; |
c906108c SS |
10605 | *p2++ = 'q'; |
10606 | *p2++ = query_type; | |
10607 | ||
23860348 MS |
10608 | /* We used one buffer char for the remote protocol q command and |
10609 | another for the query type. As the remote protocol encapsulation | |
10610 | uses 4 chars plus one extra in case we are debugging | |
10611 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10612 | string. */ | |
c906108c | 10613 | i = 0; |
ea9c271d | 10614 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10615 | { |
1e3ff5ad AC |
10616 | /* Bad caller may have sent forbidden characters. */ |
10617 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10618 | *p2++ = annex[i]; | |
c906108c SS |
10619 | i++; |
10620 | } | |
1e3ff5ad AC |
10621 | *p2 = '\0'; |
10622 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10623 | |
6d820c5c | 10624 | i = putpkt (rs->buf); |
c5aa993b | 10625 | if (i < 0) |
2ed4b548 | 10626 | return TARGET_XFER_E_IO; |
c906108c | 10627 | |
6d820c5c DJ |
10628 | getpkt (&rs->buf, &rs->buf_size, 0); |
10629 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10630 | |
9b409511 | 10631 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 10632 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
10633 | } |
10634 | ||
09c98b44 DB |
10635 | /* Implementation of to_get_memory_xfer_limit. */ |
10636 | ||
10637 | static ULONGEST | |
10638 | remote_get_memory_xfer_limit (struct target_ops *ops) | |
10639 | { | |
10640 | return get_memory_write_packet_size (); | |
10641 | } | |
10642 | ||
08388c79 DE |
10643 | static int |
10644 | remote_search_memory (struct target_ops* ops, | |
10645 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10646 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10647 | CORE_ADDR *found_addrp) | |
10648 | { | |
f5656ead | 10649 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10650 | struct remote_state *rs = get_remote_state (); |
10651 | int max_size = get_memory_write_packet_size (); | |
10652 | struct packet_config *packet = | |
10653 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10654 | /* Number of packet bytes used to encode the pattern; |
10655 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10656 | int escaped_pattern_len; |
0df8b418 | 10657 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10658 | int used_pattern_len; |
10659 | int i; | |
10660 | int found; | |
10661 | ULONGEST found_addr; | |
10662 | ||
7cc244de PA |
10663 | /* Don't go to the target if we don't have to. This is done before |
10664 | checking packet_config_support to avoid the possibility that a | |
10665 | success for this edge case means the facility works in | |
10666 | general. */ | |
08388c79 DE |
10667 | if (pattern_len > search_space_len) |
10668 | return 0; | |
10669 | if (pattern_len == 0) | |
10670 | { | |
10671 | *found_addrp = start_addr; | |
10672 | return 1; | |
10673 | } | |
10674 | ||
10675 | /* If we already know the packet isn't supported, fall back to the simple | |
10676 | way of searching memory. */ | |
10677 | ||
4082afcc | 10678 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10679 | { |
10680 | /* Target doesn't provided special support, fall back and use the | |
10681 | standard support (copy memory and do the search here). */ | |
10682 | return simple_search_memory (ops, start_addr, search_space_len, | |
10683 | pattern, pattern_len, found_addrp); | |
10684 | } | |
10685 | ||
28439a30 PA |
10686 | /* Make sure the remote is pointing at the right process. */ |
10687 | set_general_process (); | |
10688 | ||
08388c79 DE |
10689 | /* Insert header. */ |
10690 | i = snprintf (rs->buf, max_size, | |
10691 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10692 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10693 | phex_nz (search_space_len, sizeof (search_space_len))); |
10694 | max_size -= (i + 1); | |
10695 | ||
10696 | /* Escape as much data as fits into rs->buf. */ | |
10697 | escaped_pattern_len = | |
124e13d9 | 10698 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10699 | &used_pattern_len, max_size); |
10700 | ||
10701 | /* Bail if the pattern is too large. */ | |
10702 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10703 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10704 | |
10705 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10706 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10707 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10708 | { | |
10709 | /* The request may not have worked because the command is not | |
10710 | supported. If so, fall back to the simple way. */ | |
7cc244de | 10711 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10712 | { |
10713 | return simple_search_memory (ops, start_addr, search_space_len, | |
10714 | pattern, pattern_len, found_addrp); | |
10715 | } | |
10716 | return -1; | |
10717 | } | |
10718 | ||
10719 | if (rs->buf[0] == '0') | |
10720 | found = 0; | |
10721 | else if (rs->buf[0] == '1') | |
10722 | { | |
10723 | found = 1; | |
10724 | if (rs->buf[1] != ',') | |
10e0fa18 | 10725 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10726 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10727 | *found_addrp = found_addr; | |
10728 | } | |
10729 | else | |
10e0fa18 | 10730 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10731 | |
10732 | return found; | |
10733 | } | |
10734 | ||
96baa820 | 10735 | static void |
a30bf1f1 | 10736 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10737 | struct ui_file *outbuf) |
96baa820 | 10738 | { |
d01949b6 | 10739 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10740 | char *p = rs->buf; |
96baa820 | 10741 | |
5d93a237 | 10742 | if (!rs->remote_desc) |
8a3fe4f8 | 10743 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10744 | |
23860348 | 10745 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10746 | if (command == NULL) |
10747 | command = ""; | |
10748 | ||
23860348 | 10749 | /* The query prefix. */ |
2e9f7625 DJ |
10750 | strcpy (rs->buf, "qRcmd,"); |
10751 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10752 | |
3e43a32a MS |
10753 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10754 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10755 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10756 | |
23860348 | 10757 | /* Encode the actual command. */ |
a30bf1f1 | 10758 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10759 | |
6d820c5c | 10760 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10761 | error (_("Communication problem with target.")); |
96baa820 JM |
10762 | |
10763 | /* get/display the response */ | |
10764 | while (1) | |
10765 | { | |
2e9f7625 DJ |
10766 | char *buf; |
10767 | ||
00bf0b85 | 10768 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10769 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10770 | rs->buf[0] = '\0'; |
5b37825d PW |
10771 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10772 | { | |
10773 | /* Timeout. Continue to (try to) read responses. | |
10774 | This is better than stopping with an error, assuming the stub | |
10775 | is still executing the (long) monitor command. | |
10776 | If needed, the user can interrupt gdb using C-c, obtaining | |
10777 | an effect similar to stop on timeout. */ | |
10778 | continue; | |
10779 | } | |
2e9f7625 | 10780 | buf = rs->buf; |
96baa820 | 10781 | if (buf[0] == '\0') |
8a3fe4f8 | 10782 | error (_("Target does not support this command.")); |
96baa820 JM |
10783 | if (buf[0] == 'O' && buf[1] != 'K') |
10784 | { | |
23860348 | 10785 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10786 | continue; |
10787 | } | |
10788 | if (strcmp (buf, "OK") == 0) | |
10789 | break; | |
7be570e7 JM |
10790 | if (strlen (buf) == 3 && buf[0] == 'E' |
10791 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10792 | { | |
8a3fe4f8 | 10793 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10794 | } |
96baa820 JM |
10795 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10796 | { | |
10797 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10798 | |
96baa820 JM |
10799 | fputc_unfiltered (c, outbuf); |
10800 | } | |
10801 | break; | |
10802 | } | |
10803 | } | |
10804 | ||
a664f67e | 10805 | static std::vector<mem_region> |
fd79ecee DJ |
10806 | remote_memory_map (struct target_ops *ops) |
10807 | { | |
a664f67e | 10808 | std::vector<mem_region> result; |
b7b030ad TT |
10809 | gdb::unique_xmalloc_ptr<char> text |
10810 | = target_read_stralloc (¤t_target, TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
10811 | |
10812 | if (text) | |
b7b030ad | 10813 | result = parse_memory_map (text.get ()); |
fd79ecee DJ |
10814 | |
10815 | return result; | |
10816 | } | |
10817 | ||
c906108c | 10818 | static void |
ac88e2de | 10819 | packet_command (const char *args, int from_tty) |
c906108c | 10820 | { |
d01949b6 | 10821 | struct remote_state *rs = get_remote_state (); |
c906108c | 10822 | |
5d93a237 | 10823 | if (!rs->remote_desc) |
8a3fe4f8 | 10824 | error (_("command can only be used with remote target")); |
c906108c | 10825 | |
c5aa993b | 10826 | if (!args) |
8a3fe4f8 | 10827 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10828 | |
10829 | puts_filtered ("sending: "); | |
10830 | print_packet (args); | |
10831 | puts_filtered ("\n"); | |
10832 | putpkt (args); | |
10833 | ||
6d820c5c | 10834 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10835 | puts_filtered ("received: "); |
6d820c5c | 10836 | print_packet (rs->buf); |
c906108c SS |
10837 | puts_filtered ("\n"); |
10838 | } | |
10839 | ||
10840 | #if 0 | |
23860348 | 10841 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10842 | |
a14ed312 | 10843 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10844 | |
a14ed312 | 10845 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10846 | |
a14ed312 | 10847 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10848 | |
a14ed312 | 10849 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10850 | |
23860348 | 10851 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10852 | |
a14ed312 | 10853 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10854 | |
23860348 | 10855 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10856 | |
a14ed312 | 10857 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10858 | |
a14ed312 | 10859 | static void init_remote_threadtests (void); |
c906108c | 10860 | |
23860348 | 10861 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10862 | |
10863 | static void | |
0b39b52e | 10864 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
10865 | { |
10866 | int sample_thread = SAMPLE_THREAD; | |
10867 | ||
a3f17187 | 10868 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10869 | set_general_thread (sample_thread); |
c906108c SS |
10870 | } |
10871 | ||
10872 | ||
10873 | static void | |
0b39b52e | 10874 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
10875 | { |
10876 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10877 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10878 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10879 | |
79d7f229 | 10880 | if (remote_thread_alive (ptid)) |
c906108c SS |
10881 | printf_filtered ("PASS: Thread alive test\n"); |
10882 | else | |
10883 | printf_filtered ("FAIL: Thread alive test\n"); | |
10884 | } | |
10885 | ||
23860348 | 10886 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10887 | |
10888 | void | |
fba45db2 | 10889 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10890 | { |
10891 | char hexid[20]; | |
10892 | ||
23860348 | 10893 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10894 | hexid[16] = 0; |
10895 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10896 | } | |
10897 | ||
10898 | static void | |
0b39b52e | 10899 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
10900 | { |
10901 | int startflag = 1; | |
10902 | threadref nextthread; | |
10903 | int done, result_count; | |
10904 | threadref threadlist[3]; | |
10905 | ||
10906 | printf_filtered ("Remote Threadlist test\n"); | |
10907 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10908 | &result_count, &threadlist[0])) | |
10909 | printf_filtered ("FAIL: threadlist test\n"); | |
10910 | else | |
10911 | { | |
10912 | threadref *scan = threadlist; | |
10913 | threadref *limit = scan + result_count; | |
10914 | ||
10915 | while (scan < limit) | |
10916 | output_threadid (" thread ", scan++); | |
10917 | } | |
10918 | } | |
10919 | ||
10920 | void | |
fba45db2 | 10921 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10922 | { |
10923 | output_threadid ("Threadid: ", &info->threadid); | |
10924 | printf_filtered ("Name: %s\n ", info->shortname); | |
10925 | printf_filtered ("State: %s\n", info->display); | |
10926 | printf_filtered ("other: %s\n\n", info->more_display); | |
10927 | } | |
10928 | ||
10929 | int | |
fba45db2 | 10930 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10931 | { |
10932 | int result; | |
10933 | int set; | |
10934 | struct gdb_ext_thread_info threadinfo; | |
10935 | ||
10936 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10937 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10938 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10939 | display_thread_info (&threadinfo); | |
10940 | return result; | |
10941 | } | |
10942 | ||
10943 | static void | |
0b39b52e | 10944 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
10945 | { |
10946 | int athread = SAMPLE_THREAD; | |
10947 | threadref thread; | |
10948 | int set; | |
10949 | ||
10950 | int_to_threadref (&thread, athread); | |
10951 | printf_filtered ("Remote Threadinfo test\n"); | |
10952 | if (!get_and_display_threadinfo (&thread)) | |
10953 | printf_filtered ("FAIL cannot get thread info\n"); | |
10954 | } | |
10955 | ||
10956 | static int | |
fba45db2 | 10957 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10958 | { |
10959 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10960 | return get_and_display_threadinfo (ref); | |
10961 | } | |
10962 | ||
10963 | static void | |
0b39b52e | 10964 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
10965 | { |
10966 | printf_filtered ("Remote Threadlist update test\n"); | |
10967 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10968 | } | |
10969 | ||
10970 | static void | |
10971 | init_remote_threadtests (void) | |
10972 | { | |
3e43a32a MS |
10973 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10974 | _("Fetch and print the remote list of " | |
10975 | "thread identifiers, one pkt only")); | |
c906108c | 10976 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10977 | _("Fetch and display info about one thread")); |
c906108c | 10978 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10979 | _("Test setting to a different thread")); |
c906108c | 10980 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10981 | _("Iterate through updating all remote thread info")); |
c906108c | 10982 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10983 | _(" Remote thread alive test ")); |
c906108c SS |
10984 | } |
10985 | ||
10986 | #endif /* 0 */ | |
10987 | ||
f3fb8c85 MS |
10988 | /* Convert a thread ID to a string. Returns the string in a static |
10989 | buffer. */ | |
10990 | ||
7a114964 | 10991 | static const char * |
117de6a9 | 10992 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10993 | { |
79d7f229 | 10994 | static char buf[64]; |
82f73884 | 10995 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10996 | |
7cee1e54 PA |
10997 | if (ptid_equal (ptid, null_ptid)) |
10998 | return normal_pid_to_str (ptid); | |
10999 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
11000 | { |
11001 | /* Printing an inferior target id. */ | |
11002 | ||
11003 | /* When multi-process extensions are off, there's no way in the | |
11004 | remote protocol to know the remote process id, if there's any | |
11005 | at all. There's one exception --- when we're connected with | |
11006 | target extended-remote, and we manually attached to a process | |
11007 | with "attach PID". We don't record anywhere a flag that | |
11008 | allows us to distinguish that case from the case of | |
11009 | connecting with extended-remote and the stub already being | |
11010 | attached to a process, and reporting yes to qAttached, hence | |
11011 | no smart special casing here. */ | |
11012 | if (!remote_multi_process_p (rs)) | |
11013 | { | |
11014 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11015 | return buf; | |
11016 | } | |
11017 | ||
11018 | return normal_pid_to_str (ptid); | |
82f73884 | 11019 | } |
ecd0ada5 | 11020 | else |
79d7f229 | 11021 | { |
ecd0ada5 PA |
11022 | if (ptid_equal (magic_null_ptid, ptid)) |
11023 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11024 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11025 | if (ptid_get_lwp (ptid) == 0) |
11026 | return normal_pid_to_str (ptid); | |
11027 | else | |
11028 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11029 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11030 | else |
11031 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11032 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11033 | return buf; |
11034 | } | |
f3fb8c85 MS |
11035 | } |
11036 | ||
38691318 KB |
11037 | /* Get the address of the thread local variable in OBJFILE which is |
11038 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11039 | ||
11040 | static CORE_ADDR | |
117de6a9 PA |
11041 | remote_get_thread_local_address (struct target_ops *ops, |
11042 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 11043 | { |
4082afcc | 11044 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11045 | { |
11046 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11047 | char *p = rs->buf; |
82f73884 | 11048 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11049 | enum packet_result result; |
38691318 KB |
11050 | |
11051 | strcpy (p, "qGetTLSAddr:"); | |
11052 | p += strlen (p); | |
82f73884 | 11053 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11054 | *p++ = ','; |
11055 | p += hexnumstr (p, offset); | |
11056 | *p++ = ','; | |
11057 | p += hexnumstr (p, lm); | |
11058 | *p++ = '\0'; | |
11059 | ||
6d820c5c DJ |
11060 | putpkt (rs->buf); |
11061 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11062 | result = packet_ok (rs->buf, |
11063 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11064 | if (result == PACKET_OK) |
38691318 KB |
11065 | { |
11066 | ULONGEST result; | |
11067 | ||
6d820c5c | 11068 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11069 | return result; |
11070 | } | |
571dd617 | 11071 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11072 | throw_error (TLS_GENERIC_ERROR, |
11073 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11074 | else |
109c3e39 AC |
11075 | throw_error (TLS_GENERIC_ERROR, |
11076 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11077 | } |
11078 | else | |
109c3e39 AC |
11079 | throw_error (TLS_GENERIC_ERROR, |
11080 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11081 | /* Not reached. */ |
11082 | return 0; | |
11083 | } | |
11084 | ||
711e434b PM |
11085 | /* Provide thread local base, i.e. Thread Information Block address. |
11086 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11087 | ||
70221824 | 11088 | static int |
bd7ae0f5 | 11089 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11090 | { |
4082afcc | 11091 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11092 | { |
11093 | struct remote_state *rs = get_remote_state (); | |
11094 | char *p = rs->buf; | |
11095 | char *endp = rs->buf + get_remote_packet_size (); | |
11096 | enum packet_result result; | |
11097 | ||
11098 | strcpy (p, "qGetTIBAddr:"); | |
11099 | p += strlen (p); | |
11100 | p = write_ptid (p, endp, ptid); | |
11101 | *p++ = '\0'; | |
11102 | ||
11103 | putpkt (rs->buf); | |
11104 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11105 | result = packet_ok (rs->buf, | |
11106 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11107 | if (result == PACKET_OK) | |
11108 | { | |
11109 | ULONGEST result; | |
11110 | ||
11111 | unpack_varlen_hex (rs->buf, &result); | |
11112 | if (addr) | |
11113 | *addr = (CORE_ADDR) result; | |
11114 | return 1; | |
11115 | } | |
11116 | else if (result == PACKET_UNKNOWN) | |
11117 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11118 | else | |
11119 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11120 | } | |
11121 | else | |
11122 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11123 | /* Not reached. */ | |
11124 | return 0; | |
11125 | } | |
11126 | ||
29709017 DJ |
11127 | /* Support for inferring a target description based on the current |
11128 | architecture and the size of a 'g' packet. While the 'g' packet | |
11129 | can have any size (since optional registers can be left off the | |
11130 | end), some sizes are easily recognizable given knowledge of the | |
11131 | approximate architecture. */ | |
11132 | ||
11133 | struct remote_g_packet_guess | |
11134 | { | |
11135 | int bytes; | |
11136 | const struct target_desc *tdesc; | |
11137 | }; | |
11138 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11139 | DEF_VEC_O(remote_g_packet_guess_s); | |
11140 | ||
11141 | struct remote_g_packet_data | |
11142 | { | |
11143 | VEC(remote_g_packet_guess_s) *guesses; | |
11144 | }; | |
11145 | ||
11146 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11147 | ||
11148 | static void * | |
11149 | remote_g_packet_data_init (struct obstack *obstack) | |
11150 | { | |
11151 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11152 | } | |
11153 | ||
11154 | void | |
11155 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11156 | const struct target_desc *tdesc) | |
11157 | { | |
11158 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11159 | = ((struct remote_g_packet_data *) |
11160 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11161 | struct remote_g_packet_guess new_guess, *guess; |
11162 | int ix; | |
11163 | ||
11164 | gdb_assert (tdesc != NULL); | |
11165 | ||
11166 | for (ix = 0; | |
11167 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11168 | ix++) | |
11169 | if (guess->bytes == bytes) | |
11170 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11171 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11172 | bytes); |
11173 | ||
11174 | new_guess.bytes = bytes; | |
11175 | new_guess.tdesc = tdesc; | |
11176 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11177 | } | |
11178 | ||
d962ef82 DJ |
11179 | /* Return 1 if remote_read_description would do anything on this target |
11180 | and architecture, 0 otherwise. */ | |
11181 | ||
11182 | static int | |
11183 | remote_read_description_p (struct target_ops *target) | |
11184 | { | |
11185 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11186 | = ((struct remote_g_packet_data *) |
11187 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11188 | |
11189 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11190 | return 1; | |
11191 | ||
11192 | return 0; | |
11193 | } | |
11194 | ||
29709017 DJ |
11195 | static const struct target_desc * |
11196 | remote_read_description (struct target_ops *target) | |
11197 | { | |
11198 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11199 | = ((struct remote_g_packet_data *) |
11200 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11201 | |
d962ef82 DJ |
11202 | /* Do not try this during initial connection, when we do not know |
11203 | whether there is a running but stopped thread. */ | |
11204 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 11205 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 11206 | |
29709017 DJ |
11207 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11208 | { | |
11209 | struct remote_g_packet_guess *guess; | |
11210 | int ix; | |
11211 | int bytes = send_g_packet (); | |
11212 | ||
11213 | for (ix = 0; | |
11214 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11215 | ix++) | |
11216 | if (guess->bytes == bytes) | |
11217 | return guess->tdesc; | |
11218 | ||
11219 | /* We discard the g packet. A minor optimization would be to | |
11220 | hold on to it, and fill the register cache once we have selected | |
11221 | an architecture, but it's too tricky to do safely. */ | |
11222 | } | |
11223 | ||
2117c711 | 11224 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
11225 | } |
11226 | ||
a6b151f1 DJ |
11227 | /* Remote file transfer support. This is host-initiated I/O, not |
11228 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11229 | ||
11230 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11231 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11232 | decrease *LEFT. Otherwise raise an error. */ | |
11233 | ||
11234 | static void | |
a121b7c1 | 11235 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11236 | { |
11237 | int len = strlen (string); | |
11238 | ||
11239 | if (len > *left) | |
11240 | error (_("Packet too long for target.")); | |
11241 | ||
11242 | memcpy (*buffer, string, len); | |
11243 | *buffer += len; | |
11244 | *left -= len; | |
11245 | ||
11246 | /* NUL-terminate the buffer as a convenience, if there is | |
11247 | room. */ | |
11248 | if (*left) | |
11249 | **buffer = '\0'; | |
11250 | } | |
11251 | ||
11252 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11253 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11254 | decrease *LEFT. Otherwise raise an error. */ | |
11255 | ||
11256 | static void | |
11257 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11258 | int len) | |
11259 | { | |
11260 | if (2 * len > *left) | |
11261 | error (_("Packet too long for target.")); | |
11262 | ||
11263 | bin2hex (bytes, *buffer, len); | |
11264 | *buffer += 2 * len; | |
11265 | *left -= 2 * len; | |
11266 | ||
11267 | /* NUL-terminate the buffer as a convenience, if there is | |
11268 | room. */ | |
11269 | if (*left) | |
11270 | **buffer = '\0'; | |
11271 | } | |
11272 | ||
11273 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11274 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11275 | decrease *LEFT. Otherwise raise an error. */ | |
11276 | ||
11277 | static void | |
11278 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11279 | { | |
11280 | int len = hexnumlen (value); | |
11281 | ||
11282 | if (len > *left) | |
11283 | error (_("Packet too long for target.")); | |
11284 | ||
11285 | hexnumstr (*buffer, value); | |
11286 | *buffer += len; | |
11287 | *left -= len; | |
11288 | ||
11289 | /* NUL-terminate the buffer as a convenience, if there is | |
11290 | room. */ | |
11291 | if (*left) | |
11292 | **buffer = '\0'; | |
11293 | } | |
11294 | ||
11295 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11296 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11297 | was included, and *ATTACHMENT to point to the start of the annex | |
11298 | if any. The length of the packet isn't needed here; there may | |
11299 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11300 | ||
11301 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11302 | -1 is returned, the other variables may not be initialized. */ | |
11303 | ||
11304 | static int | |
11305 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11306 | int *remote_errno, char **attachment) | |
11307 | { | |
11308 | char *p, *p2; | |
11309 | ||
11310 | *remote_errno = 0; | |
11311 | *attachment = NULL; | |
11312 | ||
11313 | if (buffer[0] != 'F') | |
11314 | return -1; | |
11315 | ||
11316 | errno = 0; | |
11317 | *retcode = strtol (&buffer[1], &p, 16); | |
11318 | if (errno != 0 || p == &buffer[1]) | |
11319 | return -1; | |
11320 | ||
11321 | /* Check for ",errno". */ | |
11322 | if (*p == ',') | |
11323 | { | |
11324 | errno = 0; | |
11325 | *remote_errno = strtol (p + 1, &p2, 16); | |
11326 | if (errno != 0 || p + 1 == p2) | |
11327 | return -1; | |
11328 | p = p2; | |
11329 | } | |
11330 | ||
11331 | /* Check for ";attachment". If there is no attachment, the | |
11332 | packet should end here. */ | |
11333 | if (*p == ';') | |
11334 | { | |
11335 | *attachment = p + 1; | |
11336 | return 0; | |
11337 | } | |
11338 | else if (*p == '\0') | |
11339 | return 0; | |
11340 | else | |
11341 | return -1; | |
11342 | } | |
11343 | ||
11344 | /* Send a prepared I/O packet to the target and read its response. | |
11345 | The prepared packet is in the global RS->BUF before this function | |
11346 | is called, and the answer is there when we return. | |
11347 | ||
11348 | COMMAND_BYTES is the length of the request to send, which may include | |
11349 | binary data. WHICH_PACKET is the packet configuration to check | |
11350 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11351 | is set to the error number and -1 is returned. Otherwise the value | |
11352 | returned by the function is returned. | |
11353 | ||
11354 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11355 | attachment is expected; an error will be reported if there's a | |
11356 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11357 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11358 | attachment's length. */ | |
11359 | ||
11360 | static int | |
11361 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11362 | int *remote_errno, char **attachment, | |
11363 | int *attachment_len) | |
11364 | { | |
11365 | struct remote_state *rs = get_remote_state (); | |
11366 | int ret, bytes_read; | |
11367 | char *attachment_tmp; | |
11368 | ||
5d93a237 | 11369 | if (!rs->remote_desc |
4082afcc | 11370 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11371 | { |
11372 | *remote_errno = FILEIO_ENOSYS; | |
11373 | return -1; | |
11374 | } | |
11375 | ||
11376 | putpkt_binary (rs->buf, command_bytes); | |
11377 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11378 | ||
11379 | /* If it timed out, something is wrong. Don't try to parse the | |
11380 | buffer. */ | |
11381 | if (bytes_read < 0) | |
11382 | { | |
11383 | *remote_errno = FILEIO_EINVAL; | |
11384 | return -1; | |
11385 | } | |
11386 | ||
11387 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11388 | { | |
11389 | case PACKET_ERROR: | |
11390 | *remote_errno = FILEIO_EINVAL; | |
11391 | return -1; | |
11392 | case PACKET_UNKNOWN: | |
11393 | *remote_errno = FILEIO_ENOSYS; | |
11394 | return -1; | |
11395 | case PACKET_OK: | |
11396 | break; | |
11397 | } | |
11398 | ||
11399 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11400 | &attachment_tmp)) | |
11401 | { | |
11402 | *remote_errno = FILEIO_EINVAL; | |
11403 | return -1; | |
11404 | } | |
11405 | ||
11406 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11407 | if ((attachment_tmp == NULL && attachment != NULL) | |
11408 | || (attachment_tmp != NULL && attachment == NULL)) | |
11409 | { | |
11410 | *remote_errno = FILEIO_EINVAL; | |
11411 | return -1; | |
11412 | } | |
11413 | ||
11414 | /* If an attachment was found, it must point into the packet buffer; | |
11415 | work out how many bytes there were. */ | |
11416 | if (attachment_tmp != NULL) | |
11417 | { | |
11418 | *attachment = attachment_tmp; | |
11419 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11420 | } | |
11421 | ||
11422 | return ret; | |
11423 | } | |
11424 | ||
80152258 PA |
11425 | /* Invalidate the readahead cache. */ |
11426 | ||
11427 | static void | |
11428 | readahead_cache_invalidate (void) | |
11429 | { | |
11430 | struct remote_state *rs = get_remote_state (); | |
11431 | ||
11432 | rs->readahead_cache.fd = -1; | |
11433 | } | |
11434 | ||
11435 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
11436 | ||
11437 | static void | |
11438 | readahead_cache_invalidate_fd (int fd) | |
11439 | { | |
11440 | struct remote_state *rs = get_remote_state (); | |
11441 | ||
11442 | if (rs->readahead_cache.fd == fd) | |
11443 | rs->readahead_cache.fd = -1; | |
11444 | } | |
11445 | ||
15a201c8 GB |
11446 | /* Set the filesystem remote_hostio functions that take FILENAME |
11447 | arguments will use. Return 0 on success, or -1 if an error | |
11448 | occurs (and set *REMOTE_ERRNO). */ | |
11449 | ||
11450 | static int | |
11451 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11452 | { | |
11453 | struct remote_state *rs = get_remote_state (); | |
11454 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11455 | char *p = rs->buf; | |
11456 | int left = get_remote_packet_size () - 1; | |
11457 | char arg[9]; | |
11458 | int ret; | |
11459 | ||
11460 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11461 | return 0; | |
11462 | ||
11463 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11464 | return 0; | |
11465 | ||
11466 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11467 | ||
11468 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11469 | remote_buffer_add_string (&p, &left, arg); | |
11470 | ||
11471 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11472 | remote_errno, NULL, NULL); | |
11473 | ||
11474 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11475 | return 0; | |
11476 | ||
11477 | if (ret == 0) | |
11478 | rs->fs_pid = required_pid; | |
11479 | ||
11480 | return ret; | |
11481 | } | |
11482 | ||
12e2a5fd | 11483 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11484 | |
11485 | static int | |
cd897586 | 11486 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11487 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11488 | int flags, int mode, int warn_if_slow, |
11489 | int *remote_errno) | |
a6b151f1 DJ |
11490 | { |
11491 | struct remote_state *rs = get_remote_state (); | |
11492 | char *p = rs->buf; | |
11493 | int left = get_remote_packet_size () - 1; | |
11494 | ||
4313b8c0 GB |
11495 | if (warn_if_slow) |
11496 | { | |
11497 | static int warning_issued = 0; | |
11498 | ||
11499 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11500 | filename); | |
11501 | ||
11502 | if (!warning_issued) | |
11503 | { | |
11504 | warning (_("File transfers from remote targets can be slow." | |
11505 | " Use \"set sysroot\" to access files locally" | |
11506 | " instead.")); | |
11507 | warning_issued = 1; | |
11508 | } | |
11509 | } | |
11510 | ||
15a201c8 GB |
11511 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11512 | return -1; | |
11513 | ||
a6b151f1 DJ |
11514 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11515 | ||
11516 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11517 | strlen (filename)); | |
11518 | remote_buffer_add_string (&p, &left, ","); | |
11519 | ||
11520 | remote_buffer_add_int (&p, &left, flags); | |
11521 | remote_buffer_add_string (&p, &left, ","); | |
11522 | ||
11523 | remote_buffer_add_int (&p, &left, mode); | |
11524 | ||
11525 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11526 | remote_errno, NULL, NULL); | |
11527 | } | |
11528 | ||
12e2a5fd | 11529 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11530 | |
11531 | static int | |
0d866f62 TT |
11532 | remote_hostio_pwrite (struct target_ops *self, |
11533 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11534 | ULONGEST offset, int *remote_errno) |
11535 | { | |
11536 | struct remote_state *rs = get_remote_state (); | |
11537 | char *p = rs->buf; | |
11538 | int left = get_remote_packet_size (); | |
11539 | int out_len; | |
11540 | ||
80152258 PA |
11541 | readahead_cache_invalidate_fd (fd); |
11542 | ||
a6b151f1 DJ |
11543 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11544 | ||
11545 | remote_buffer_add_int (&p, &left, fd); | |
11546 | remote_buffer_add_string (&p, &left, ","); | |
11547 | ||
11548 | remote_buffer_add_int (&p, &left, offset); | |
11549 | remote_buffer_add_string (&p, &left, ","); | |
11550 | ||
124e13d9 | 11551 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11552 | get_remote_packet_size () - (p - rs->buf)); |
11553 | ||
11554 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11555 | remote_errno, NULL, NULL); | |
11556 | } | |
11557 | ||
80152258 PA |
11558 | /* Helper for the implementation of to_fileio_pread. Read the file |
11559 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11560 | |
11561 | static int | |
80152258 PA |
11562 | remote_hostio_pread_vFile (struct target_ops *self, |
11563 | int fd, gdb_byte *read_buf, int len, | |
11564 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11565 | { |
11566 | struct remote_state *rs = get_remote_state (); | |
11567 | char *p = rs->buf; | |
11568 | char *attachment; | |
11569 | int left = get_remote_packet_size (); | |
11570 | int ret, attachment_len; | |
11571 | int read_len; | |
11572 | ||
11573 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11574 | ||
11575 | remote_buffer_add_int (&p, &left, fd); | |
11576 | remote_buffer_add_string (&p, &left, ","); | |
11577 | ||
11578 | remote_buffer_add_int (&p, &left, len); | |
11579 | remote_buffer_add_string (&p, &left, ","); | |
11580 | ||
11581 | remote_buffer_add_int (&p, &left, offset); | |
11582 | ||
11583 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11584 | remote_errno, &attachment, | |
11585 | &attachment_len); | |
11586 | ||
11587 | if (ret < 0) | |
11588 | return ret; | |
11589 | ||
bc20a4af | 11590 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11591 | read_buf, len); |
11592 | if (read_len != ret) | |
11593 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11594 | ||
11595 | return ret; | |
11596 | } | |
11597 | ||
80152258 PA |
11598 | /* Serve pread from the readahead cache. Returns number of bytes |
11599 | read, or 0 if the request can't be served from the cache. */ | |
11600 | ||
11601 | static int | |
11602 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11603 | int fd, gdb_byte *read_buf, size_t len, | |
11604 | ULONGEST offset) | |
11605 | { | |
11606 | struct readahead_cache *cache = &rs->readahead_cache; | |
11607 | ||
11608 | if (cache->fd == fd | |
11609 | && cache->offset <= offset | |
11610 | && offset < cache->offset + cache->bufsize) | |
11611 | { | |
11612 | ULONGEST max = cache->offset + cache->bufsize; | |
11613 | ||
11614 | if (offset + len > max) | |
11615 | len = max - offset; | |
11616 | ||
11617 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11618 | return len; | |
11619 | } | |
11620 | ||
11621 | return 0; | |
11622 | } | |
11623 | ||
11624 | /* Implementation of to_fileio_pread. */ | |
11625 | ||
11626 | static int | |
11627 | remote_hostio_pread (struct target_ops *self, | |
11628 | int fd, gdb_byte *read_buf, int len, | |
11629 | ULONGEST offset, int *remote_errno) | |
11630 | { | |
11631 | int ret; | |
11632 | struct remote_state *rs = get_remote_state (); | |
11633 | struct readahead_cache *cache = &rs->readahead_cache; | |
11634 | ||
11635 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11636 | if (ret > 0) | |
11637 | { | |
11638 | cache->hit_count++; | |
11639 | ||
11640 | if (remote_debug) | |
11641 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11642 | pulongest (cache->hit_count)); | |
11643 | return ret; | |
11644 | } | |
11645 | ||
11646 | cache->miss_count++; | |
11647 | if (remote_debug) | |
11648 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11649 | pulongest (cache->miss_count)); | |
11650 | ||
11651 | cache->fd = fd; | |
11652 | cache->offset = offset; | |
11653 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11654 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11655 | |
11656 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11657 | cache->offset, remote_errno); | |
11658 | if (ret <= 0) | |
11659 | { | |
11660 | readahead_cache_invalidate_fd (fd); | |
11661 | return ret; | |
11662 | } | |
11663 | ||
11664 | cache->bufsize = ret; | |
11665 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11666 | } | |
11667 | ||
12e2a5fd | 11668 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11669 | |
11670 | static int | |
df39ea25 | 11671 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11672 | { |
11673 | struct remote_state *rs = get_remote_state (); | |
11674 | char *p = rs->buf; | |
11675 | int left = get_remote_packet_size () - 1; | |
11676 | ||
80152258 PA |
11677 | readahead_cache_invalidate_fd (fd); |
11678 | ||
a6b151f1 DJ |
11679 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11680 | ||
11681 | remote_buffer_add_int (&p, &left, fd); | |
11682 | ||
11683 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11684 | remote_errno, NULL, NULL); | |
11685 | } | |
11686 | ||
12e2a5fd | 11687 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11688 | |
11689 | static int | |
dbbca37d | 11690 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11691 | struct inferior *inf, const char *filename, |
11692 | int *remote_errno) | |
a6b151f1 DJ |
11693 | { |
11694 | struct remote_state *rs = get_remote_state (); | |
11695 | char *p = rs->buf; | |
11696 | int left = get_remote_packet_size () - 1; | |
11697 | ||
15a201c8 GB |
11698 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11699 | return -1; | |
11700 | ||
a6b151f1 DJ |
11701 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11702 | ||
11703 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11704 | strlen (filename)); | |
11705 | ||
11706 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11707 | remote_errno, NULL, NULL); | |
11708 | } | |
11709 | ||
12e2a5fd | 11710 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 11711 | |
e0d3522b | 11712 | static gdb::optional<std::string> |
fab5aa7c | 11713 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11714 | struct inferior *inf, const char *filename, |
11715 | int *remote_errno) | |
b9e7b9c3 UW |
11716 | { |
11717 | struct remote_state *rs = get_remote_state (); | |
11718 | char *p = rs->buf; | |
11719 | char *attachment; | |
11720 | int left = get_remote_packet_size (); | |
11721 | int len, attachment_len; | |
11722 | int read_len; | |
b9e7b9c3 | 11723 | |
15a201c8 | 11724 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 11725 | return {}; |
15a201c8 | 11726 | |
b9e7b9c3 UW |
11727 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11728 | ||
11729 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11730 | strlen (filename)); | |
11731 | ||
11732 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11733 | remote_errno, &attachment, | |
11734 | &attachment_len); | |
11735 | ||
11736 | if (len < 0) | |
e0d3522b | 11737 | return {}; |
b9e7b9c3 | 11738 | |
e0d3522b | 11739 | std::string ret (len, '\0'); |
b9e7b9c3 | 11740 | |
bc20a4af | 11741 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 11742 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
11743 | if (read_len != len) |
11744 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11745 | ||
b9e7b9c3 UW |
11746 | return ret; |
11747 | } | |
11748 | ||
12e2a5fd | 11749 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11750 | |
11751 | static int | |
11752 | remote_hostio_fstat (struct target_ops *self, | |
11753 | int fd, struct stat *st, | |
11754 | int *remote_errno) | |
11755 | { | |
11756 | struct remote_state *rs = get_remote_state (); | |
11757 | char *p = rs->buf; | |
11758 | int left = get_remote_packet_size (); | |
11759 | int attachment_len, ret; | |
11760 | char *attachment; | |
11761 | struct fio_stat fst; | |
11762 | int read_len; | |
11763 | ||
464b0089 GB |
11764 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11765 | ||
11766 | remote_buffer_add_int (&p, &left, fd); | |
11767 | ||
11768 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11769 | remote_errno, &attachment, | |
11770 | &attachment_len); | |
11771 | if (ret < 0) | |
0a93529c | 11772 | { |
464b0089 GB |
11773 | if (*remote_errno != FILEIO_ENOSYS) |
11774 | return ret; | |
11775 | ||
0a93529c GB |
11776 | /* Strictly we should return -1, ENOSYS here, but when |
11777 | "set sysroot remote:" was implemented in August 2008 | |
11778 | BFD's need for a stat function was sidestepped with | |
11779 | this hack. This was not remedied until March 2015 | |
11780 | so we retain the previous behavior to avoid breaking | |
11781 | compatibility. | |
11782 | ||
11783 | Note that the memset is a March 2015 addition; older | |
11784 | GDBs set st_size *and nothing else* so the structure | |
11785 | would have garbage in all other fields. This might | |
11786 | break something but retaining the previous behavior | |
11787 | here would be just too wrong. */ | |
11788 | ||
11789 | memset (st, 0, sizeof (struct stat)); | |
11790 | st->st_size = INT_MAX; | |
11791 | return 0; | |
11792 | } | |
11793 | ||
0a93529c GB |
11794 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11795 | (gdb_byte *) &fst, sizeof (fst)); | |
11796 | ||
11797 | if (read_len != ret) | |
11798 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11799 | ||
11800 | if (read_len != sizeof (fst)) | |
11801 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11802 | read_len, (int) sizeof (fst)); | |
11803 | ||
11804 | remote_fileio_to_host_stat (&fst, st); | |
11805 | ||
11806 | return 0; | |
11807 | } | |
11808 | ||
12e2a5fd | 11809 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11810 | |
11811 | static int | |
11812 | remote_filesystem_is_local (struct target_ops *self) | |
11813 | { | |
11814 | /* Valgrind GDB presents itself as a remote target but works | |
11815 | on the local filesystem: it does not implement remote get | |
11816 | and users are not expected to set a sysroot. To handle | |
11817 | this case we treat the remote filesystem as local if the | |
11818 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11819 | does not support vFile:open. */ | |
a3be80c3 | 11820 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11821 | { |
11822 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11823 | ||
11824 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11825 | { | |
11826 | int fd, remote_errno; | |
11827 | ||
11828 | /* Try opening a file to probe support. The supplied | |
11829 | filename is irrelevant, we only care about whether | |
11830 | the stub recognizes the packet or not. */ | |
07c138c8 | 11831 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11832 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11833 | &remote_errno); |
11834 | ||
11835 | if (fd >= 0) | |
11836 | remote_hostio_close (self, fd, &remote_errno); | |
11837 | ||
11838 | ps = packet_support (PACKET_vFile_open); | |
11839 | } | |
11840 | ||
11841 | if (ps == PACKET_DISABLE) | |
11842 | { | |
11843 | static int warning_issued = 0; | |
11844 | ||
11845 | if (!warning_issued) | |
11846 | { | |
11847 | warning (_("remote target does not support file" | |
11848 | " transfer, attempting to access files" | |
11849 | " from local filesystem.")); | |
11850 | warning_issued = 1; | |
11851 | } | |
11852 | ||
11853 | return 1; | |
11854 | } | |
11855 | } | |
11856 | ||
11857 | return 0; | |
11858 | } | |
11859 | ||
a6b151f1 DJ |
11860 | static int |
11861 | remote_fileio_errno_to_host (int errnum) | |
11862 | { | |
11863 | switch (errnum) | |
11864 | { | |
11865 | case FILEIO_EPERM: | |
11866 | return EPERM; | |
11867 | case FILEIO_ENOENT: | |
11868 | return ENOENT; | |
11869 | case FILEIO_EINTR: | |
11870 | return EINTR; | |
11871 | case FILEIO_EIO: | |
11872 | return EIO; | |
11873 | case FILEIO_EBADF: | |
11874 | return EBADF; | |
11875 | case FILEIO_EACCES: | |
11876 | return EACCES; | |
11877 | case FILEIO_EFAULT: | |
11878 | return EFAULT; | |
11879 | case FILEIO_EBUSY: | |
11880 | return EBUSY; | |
11881 | case FILEIO_EEXIST: | |
11882 | return EEXIST; | |
11883 | case FILEIO_ENODEV: | |
11884 | return ENODEV; | |
11885 | case FILEIO_ENOTDIR: | |
11886 | return ENOTDIR; | |
11887 | case FILEIO_EISDIR: | |
11888 | return EISDIR; | |
11889 | case FILEIO_EINVAL: | |
11890 | return EINVAL; | |
11891 | case FILEIO_ENFILE: | |
11892 | return ENFILE; | |
11893 | case FILEIO_EMFILE: | |
11894 | return EMFILE; | |
11895 | case FILEIO_EFBIG: | |
11896 | return EFBIG; | |
11897 | case FILEIO_ENOSPC: | |
11898 | return ENOSPC; | |
11899 | case FILEIO_ESPIPE: | |
11900 | return ESPIPE; | |
11901 | case FILEIO_EROFS: | |
11902 | return EROFS; | |
11903 | case FILEIO_ENOSYS: | |
11904 | return ENOSYS; | |
11905 | case FILEIO_ENAMETOOLONG: | |
11906 | return ENAMETOOLONG; | |
11907 | } | |
11908 | return -1; | |
11909 | } | |
11910 | ||
11911 | static char * | |
11912 | remote_hostio_error (int errnum) | |
11913 | { | |
11914 | int host_error = remote_fileio_errno_to_host (errnum); | |
11915 | ||
11916 | if (host_error == -1) | |
11917 | error (_("Unknown remote I/O error %d"), errnum); | |
11918 | else | |
11919 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11920 | } | |
11921 | ||
a6b151f1 DJ |
11922 | static void |
11923 | remote_hostio_close_cleanup (void *opaque) | |
11924 | { | |
11925 | int fd = *(int *) opaque; | |
11926 | int remote_errno; | |
11927 | ||
df39ea25 | 11928 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11929 | } |
11930 | ||
11931 | void | |
11932 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11933 | { | |
11934 | struct cleanup *back_to, *close_cleanup; | |
11935 | int retcode, fd, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
11936 | gdb_byte *buffer; |
11937 | int bytes_in_buffer; | |
11938 | int saw_eof; | |
11939 | ULONGEST offset; | |
5d93a237 | 11940 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11941 | |
5d93a237 | 11942 | if (!rs->remote_desc) |
a6b151f1 DJ |
11943 | error (_("command can only be used with remote target")); |
11944 | ||
d419f42d | 11945 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11946 | if (file == NULL) |
11947 | perror_with_name (local_file); | |
a6b151f1 | 11948 | |
07c138c8 | 11949 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11950 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11951 | | FILEIO_O_TRUNC), |
4313b8c0 | 11952 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11953 | if (fd == -1) |
11954 | remote_hostio_error (remote_errno); | |
11955 | ||
11956 | /* Send up to this many bytes at once. They won't all fit in the | |
11957 | remote packet limit, so we'll transfer slightly fewer. */ | |
11958 | io_size = get_remote_packet_size (); | |
224c3ddb | 11959 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 11960 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
11961 | |
11962 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11963 | ||
11964 | bytes_in_buffer = 0; | |
11965 | saw_eof = 0; | |
11966 | offset = 0; | |
11967 | while (bytes_in_buffer || !saw_eof) | |
11968 | { | |
11969 | if (!saw_eof) | |
11970 | { | |
3e43a32a MS |
11971 | bytes = fread (buffer + bytes_in_buffer, 1, |
11972 | io_size - bytes_in_buffer, | |
d419f42d | 11973 | file.get ()); |
a6b151f1 DJ |
11974 | if (bytes == 0) |
11975 | { | |
d419f42d | 11976 | if (ferror (file.get ())) |
a6b151f1 DJ |
11977 | error (_("Error reading %s."), local_file); |
11978 | else | |
11979 | { | |
11980 | /* EOF. Unless there is something still in the | |
11981 | buffer from the last iteration, we are done. */ | |
11982 | saw_eof = 1; | |
11983 | if (bytes_in_buffer == 0) | |
11984 | break; | |
11985 | } | |
11986 | } | |
11987 | } | |
11988 | else | |
11989 | bytes = 0; | |
11990 | ||
11991 | bytes += bytes_in_buffer; | |
11992 | bytes_in_buffer = 0; | |
11993 | ||
0d866f62 TT |
11994 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11995 | fd, buffer, bytes, | |
3e43a32a | 11996 | offset, &remote_errno); |
a6b151f1 DJ |
11997 | |
11998 | if (retcode < 0) | |
11999 | remote_hostio_error (remote_errno); | |
12000 | else if (retcode == 0) | |
12001 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12002 | else if (retcode < bytes) | |
12003 | { | |
12004 | /* Short write. Save the rest of the read data for the next | |
12005 | write. */ | |
12006 | bytes_in_buffer = bytes - retcode; | |
12007 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
12008 | } | |
12009 | ||
12010 | offset += retcode; | |
12011 | } | |
12012 | ||
12013 | discard_cleanups (close_cleanup); | |
df39ea25 | 12014 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12015 | remote_hostio_error (remote_errno); |
12016 | ||
12017 | if (from_tty) | |
12018 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
12019 | do_cleanups (back_to); | |
12020 | } | |
12021 | ||
12022 | void | |
12023 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
12024 | { | |
12025 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 12026 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12027 | gdb_byte *buffer; |
12028 | ULONGEST offset; | |
5d93a237 | 12029 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12030 | |
5d93a237 | 12031 | if (!rs->remote_desc) |
a6b151f1 DJ |
12032 | error (_("command can only be used with remote target")); |
12033 | ||
07c138c8 | 12034 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
12035 | remote_file, FILEIO_O_RDONLY, 0, 0, |
12036 | &remote_errno); | |
a6b151f1 DJ |
12037 | if (fd == -1) |
12038 | remote_hostio_error (remote_errno); | |
12039 | ||
d419f42d | 12040 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12041 | if (file == NULL) |
12042 | perror_with_name (local_file); | |
a6b151f1 DJ |
12043 | |
12044 | /* Send up to this many bytes at once. They won't all fit in the | |
12045 | remote packet limit, so we'll transfer slightly fewer. */ | |
12046 | io_size = get_remote_packet_size (); | |
224c3ddb | 12047 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12048 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
12049 | |
12050 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
12051 | ||
12052 | offset = 0; | |
12053 | while (1) | |
12054 | { | |
a3be983c TT |
12055 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
12056 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
12057 | if (bytes == 0) |
12058 | /* Success, but no bytes, means end-of-file. */ | |
12059 | break; | |
12060 | if (bytes == -1) | |
12061 | remote_hostio_error (remote_errno); | |
12062 | ||
12063 | offset += bytes; | |
12064 | ||
d419f42d | 12065 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12066 | if (bytes == 0) |
12067 | perror_with_name (local_file); | |
12068 | } | |
12069 | ||
12070 | discard_cleanups (close_cleanup); | |
df39ea25 | 12071 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12072 | remote_hostio_error (remote_errno); |
12073 | ||
12074 | if (from_tty) | |
12075 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12076 | do_cleanups (back_to); | |
12077 | } | |
12078 | ||
12079 | void | |
12080 | remote_file_delete (const char *remote_file, int from_tty) | |
12081 | { | |
12082 | int retcode, remote_errno; | |
5d93a237 | 12083 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12084 | |
5d93a237 | 12085 | if (!rs->remote_desc) |
a6b151f1 DJ |
12086 | error (_("command can only be used with remote target")); |
12087 | ||
dbbca37d | 12088 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12089 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12090 | if (retcode == -1) |
12091 | remote_hostio_error (remote_errno); | |
12092 | ||
12093 | if (from_tty) | |
12094 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12095 | } | |
12096 | ||
12097 | static void | |
ac88e2de | 12098 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12099 | { |
d1a41061 PP |
12100 | if (args == NULL) |
12101 | error_no_arg (_("file to put")); | |
12102 | ||
773a1edc | 12103 | gdb_argv argv (args); |
a6b151f1 DJ |
12104 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12105 | error (_("Invalid parameters to remote put")); | |
12106 | ||
12107 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12108 | } |
12109 | ||
12110 | static void | |
ac88e2de | 12111 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12112 | { |
d1a41061 PP |
12113 | if (args == NULL) |
12114 | error_no_arg (_("file to get")); | |
12115 | ||
773a1edc | 12116 | gdb_argv argv (args); |
a6b151f1 DJ |
12117 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12118 | error (_("Invalid parameters to remote get")); | |
12119 | ||
12120 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12121 | } |
12122 | ||
12123 | static void | |
ac88e2de | 12124 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12125 | { |
d1a41061 PP |
12126 | if (args == NULL) |
12127 | error_no_arg (_("file to delete")); | |
12128 | ||
773a1edc | 12129 | gdb_argv argv (args); |
a6b151f1 DJ |
12130 | if (argv[0] == NULL || argv[1] != NULL) |
12131 | error (_("Invalid parameters to remote delete")); | |
12132 | ||
12133 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12134 | } |
12135 | ||
12136 | static void | |
981a3fb3 | 12137 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12138 | { |
635c7e8a | 12139 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12140 | } |
12141 | ||
b2175913 | 12142 | static int |
19db3e69 | 12143 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 12144 | { |
4082afcc PA |
12145 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12146 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
12147 | return 1; |
12148 | else | |
12149 | return 0; | |
b2175913 MS |
12150 | } |
12151 | ||
74531fed | 12152 | static int |
2a9a2795 | 12153 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
12154 | { |
12155 | return 1; | |
12156 | } | |
12157 | ||
03583c20 | 12158 | static int |
2bfc0540 | 12159 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
12160 | { |
12161 | /* Only supported in extended mode. */ | |
12162 | return 0; | |
12163 | } | |
12164 | ||
8a305172 | 12165 | static int |
86ce2668 | 12166 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
12167 | { |
12168 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12169 | |
8020350c | 12170 | return remote_multi_process_p (rs); |
8a305172 PA |
12171 | } |
12172 | ||
70221824 | 12173 | static int |
782b2b07 SS |
12174 | remote_supports_cond_tracepoints (void) |
12175 | { | |
4082afcc | 12176 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12177 | } |
12178 | ||
3788aec7 | 12179 | static int |
efcc2da7 | 12180 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 12181 | { |
4082afcc | 12182 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12183 | } |
12184 | ||
70221824 | 12185 | static int |
7a697b8d SS |
12186 | remote_supports_fast_tracepoints (void) |
12187 | { | |
4082afcc | 12188 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12189 | } |
12190 | ||
0fb4aa4b PA |
12191 | static int |
12192 | remote_supports_static_tracepoints (void) | |
12193 | { | |
4082afcc | 12194 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12195 | } |
12196 | ||
1e4d1764 YQ |
12197 | static int |
12198 | remote_supports_install_in_trace (void) | |
12199 | { | |
4082afcc | 12200 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12201 | } |
12202 | ||
d248b706 | 12203 | static int |
7d178d6a | 12204 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 12205 | { |
4082afcc PA |
12206 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12207 | == PACKET_ENABLE); | |
d248b706 KY |
12208 | } |
12209 | ||
3065dfb6 | 12210 | static int |
6de37a3a | 12211 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 12212 | { |
4082afcc | 12213 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12214 | } |
12215 | ||
d3ce09f5 | 12216 | static int |
78eff0ec | 12217 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 12218 | { |
4082afcc | 12219 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12220 | } |
12221 | ||
35b1e5cc | 12222 | static void |
ecae04e1 | 12223 | remote_trace_init (struct target_ops *self) |
35b1e5cc | 12224 | { |
b6bb3468 PA |
12225 | struct remote_state *rs = get_remote_state (); |
12226 | ||
35b1e5cc | 12227 | putpkt ("QTinit"); |
b6bb3468 PA |
12228 | remote_get_noisy_reply (); |
12229 | if (strcmp (rs->buf, "OK") != 0) | |
35b1e5cc SS |
12230 | error (_("Target does not support this command.")); |
12231 | } | |
12232 | ||
409873ef SS |
12233 | /* Recursive routine to walk through command list including loops, and |
12234 | download packets for each command. */ | |
12235 | ||
12236 | static void | |
12237 | remote_download_command_source (int num, ULONGEST addr, | |
12238 | struct command_line *cmds) | |
12239 | { | |
12240 | struct remote_state *rs = get_remote_state (); | |
12241 | struct command_line *cmd; | |
12242 | ||
12243 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12244 | { | |
0df8b418 | 12245 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12246 | strcpy (rs->buf, "QTDPsrc:"); |
12247 | encode_source_string (num, addr, "cmd", cmd->line, | |
12248 | rs->buf + strlen (rs->buf), | |
12249 | rs->buf_size - strlen (rs->buf)); | |
12250 | putpkt (rs->buf); | |
b6bb3468 PA |
12251 | remote_get_noisy_reply (); |
12252 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12253 | warning (_("Target does not support source download.")); |
12254 | ||
12255 | if (cmd->control_type == while_control | |
12256 | || cmd->control_type == while_stepping_control) | |
12257 | { | |
12258 | remote_download_command_source (num, addr, *cmd->body_list); | |
12259 | ||
0df8b418 | 12260 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12261 | strcpy (rs->buf, "QTDPsrc:"); |
12262 | encode_source_string (num, addr, "cmd", "end", | |
12263 | rs->buf + strlen (rs->buf), | |
12264 | rs->buf_size - strlen (rs->buf)); | |
12265 | putpkt (rs->buf); | |
b6bb3468 PA |
12266 | remote_get_noisy_reply (); |
12267 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12268 | warning (_("Target does not support source download.")); |
12269 | } | |
12270 | } | |
12271 | } | |
12272 | ||
35b1e5cc | 12273 | static void |
548f7808 | 12274 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 12275 | { |
bba74b36 | 12276 | #define BUF_SIZE 2048 |
e8ba3115 | 12277 | |
35b1e5cc | 12278 | CORE_ADDR tpaddr; |
409873ef | 12279 | char addrbuf[40]; |
bba74b36 | 12280 | char buf[BUF_SIZE]; |
b44ec619 SM |
12281 | std::vector<std::string> tdp_actions; |
12282 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12283 | char *pkt; |
e8ba3115 | 12284 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12285 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12286 | struct remote_state *rs = get_remote_state (); |
35b1e5cc | 12287 | |
dc673c81 | 12288 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12289 | |
12290 | tpaddr = loc->address; | |
12291 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12292 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12293 | addrbuf, /* address */ | |
12294 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12295 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12296 | /* Fast tracepoints are mostly handled by the target, but we can |
12297 | tell the target how big of an instruction block should be moved | |
12298 | around. */ | |
12299 | if (b->type == bp_fast_tracepoint) | |
12300 | { | |
12301 | /* Only test for support at download time; we may not know | |
12302 | target capabilities at definition time. */ | |
12303 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12304 | { |
6b940e6a PL |
12305 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12306 | NULL)) | |
bba74b36 | 12307 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12308 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12309 | else |
e8ba3115 YQ |
12310 | /* If it passed validation at definition but fails now, |
12311 | something is very wrong. */ | |
12312 | internal_error (__FILE__, __LINE__, | |
12313 | _("Fast tracepoint not " | |
12314 | "valid during download")); | |
35b1e5cc | 12315 | } |
e8ba3115 YQ |
12316 | else |
12317 | /* Fast tracepoints are functionally identical to regular | |
12318 | tracepoints, so don't take lack of support as a reason to | |
12319 | give up on the trace run. */ | |
12320 | warning (_("Target does not support fast tracepoints, " | |
12321 | "downloading %d as regular tracepoint"), b->number); | |
12322 | } | |
12323 | else if (b->type == bp_static_tracepoint) | |
12324 | { | |
12325 | /* Only test for support at download time; we may not know | |
12326 | target capabilities at definition time. */ | |
12327 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12328 | { |
e8ba3115 | 12329 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12330 | |
e8ba3115 YQ |
12331 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12332 | strcat (buf, ":S"); | |
0fb4aa4b | 12333 | else |
e8ba3115 | 12334 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12335 | } |
e8ba3115 YQ |
12336 | else |
12337 | /* Fast tracepoints are functionally identical to regular | |
12338 | tracepoints, so don't take lack of support as a reason | |
12339 | to give up on the trace run. */ | |
12340 | error (_("Target does not support static tracepoints")); | |
12341 | } | |
12342 | /* If the tracepoint has a conditional, make it into an agent | |
12343 | expression and append to the definition. */ | |
12344 | if (loc->cond) | |
12345 | { | |
12346 | /* Only test support at download time, we may not know target | |
12347 | capabilities at definition time. */ | |
12348 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12349 | { |
833177a4 | 12350 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12351 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12352 | aexpr->len); | |
e8ba3115 | 12353 | pkt = buf + strlen (buf); |
b44ec619 | 12354 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12355 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12356 | *pkt = '\0'; | |
35b1e5cc | 12357 | } |
e8ba3115 YQ |
12358 | else |
12359 | warning (_("Target does not support conditional tracepoints, " | |
12360 | "ignoring tp %d cond"), b->number); | |
12361 | } | |
35b1e5cc | 12362 | |
d9b3f62e | 12363 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12364 | strcat (buf, "-"); |
12365 | putpkt (buf); | |
b6bb3468 PA |
12366 | remote_get_noisy_reply (); |
12367 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12368 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12369 | |
e8ba3115 | 12370 | /* do_single_steps (t); */ |
b44ec619 SM |
12371 | for (auto action_it = tdp_actions.begin (); |
12372 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12373 | { |
b44ec619 SM |
12374 | QUIT; /* Allow user to bail out with ^C. */ |
12375 | ||
12376 | bool has_more = (action_it != tdp_actions.end () | |
12377 | || !stepping_actions.empty ()); | |
12378 | ||
12379 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", | |
12380 | b->number, addrbuf, /* address */ | |
12381 | action_it->c_str (), | |
12382 | has_more ? '-' : 0); | |
12383 | putpkt (buf); | |
12384 | remote_get_noisy_reply (); | |
12385 | if (strcmp (rs->buf, "OK")) | |
12386 | error (_("Error on target while setting tracepoints.")); | |
e8ba3115 | 12387 | } |
409873ef | 12388 | |
b44ec619 SM |
12389 | for (auto action_it = stepping_actions.begin (); |
12390 | action_it != stepping_actions.end (); action_it++) | |
12391 | { | |
12392 | QUIT; /* Allow user to bail out with ^C. */ | |
12393 | ||
12394 | bool is_first = action_it == stepping_actions.begin (); | |
12395 | bool has_more = action_it != stepping_actions.end (); | |
12396 | ||
12397 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", | |
12398 | b->number, addrbuf, /* address */ | |
12399 | is_first ? "S" : "", | |
12400 | action_it->c_str (), | |
12401 | has_more ? "-" : ""); | |
12402 | putpkt (buf); | |
12403 | remote_get_noisy_reply (); | |
12404 | if (strcmp (rs->buf, "OK")) | |
12405 | error (_("Error on target while setting tracepoints.")); | |
12406 | } | |
12407 | ||
4082afcc | 12408 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12409 | { |
f00aae0f | 12410 | if (b->location != NULL) |
409873ef | 12411 | { |
e8ba3115 | 12412 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12413 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12414 | event_location_to_string (b->location.get ()), |
f00aae0f | 12415 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 | 12416 | putpkt (buf); |
b6bb3468 PA |
12417 | remote_get_noisy_reply (); |
12418 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12419 | warning (_("Target does not support source download.")); |
409873ef | 12420 | } |
e8ba3115 YQ |
12421 | if (b->cond_string) |
12422 | { | |
12423 | strcpy (buf, "QTDPsrc:"); | |
12424 | encode_source_string (b->number, loc->address, | |
12425 | "cond", b->cond_string, buf + strlen (buf), | |
12426 | 2048 - strlen (buf)); | |
12427 | putpkt (buf); | |
b6bb3468 PA |
12428 | remote_get_noisy_reply (); |
12429 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 YQ |
12430 | warning (_("Target does not support source download.")); |
12431 | } | |
12432 | remote_download_command_source (b->number, loc->address, | |
12433 | breakpoint_commands (b)); | |
35b1e5cc | 12434 | } |
35b1e5cc SS |
12435 | } |
12436 | ||
1e4d1764 | 12437 | static int |
a52a8357 | 12438 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12439 | { |
1e51243a PA |
12440 | struct remote_state *rs = get_remote_state (); |
12441 | struct trace_status *ts; | |
12442 | int status; | |
12443 | ||
12444 | /* Don't try to install tracepoints until we've relocated our | |
12445 | symbols, and fetched and merged the target's tracepoint list with | |
12446 | ours. */ | |
12447 | if (rs->starting_up) | |
12448 | return 0; | |
12449 | ||
12450 | ts = current_trace_status (); | |
8bd200f1 | 12451 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12452 | |
12453 | if (status == -1 || !ts->running_known || !ts->running) | |
12454 | return 0; | |
12455 | ||
12456 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12457 | installing tracepoint in trace, we have to return. */ | |
12458 | if (!remote_supports_install_in_trace ()) | |
12459 | return 0; | |
12460 | ||
12461 | return 1; | |
12462 | } | |
12463 | ||
12464 | ||
35b1e5cc | 12465 | static void |
559d2b81 TT |
12466 | remote_download_trace_state_variable (struct target_ops *self, |
12467 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
12468 | { |
12469 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12470 | char *p; |
35b1e5cc | 12471 | |
bba74b36 YQ |
12472 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
12473 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
12474 | tsv->builtin); | |
00bf0b85 SS |
12475 | p = rs->buf + strlen (rs->buf); |
12476 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
12477 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 12478 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 12479 | *p++ = '\0'; |
35b1e5cc | 12480 | putpkt (rs->buf); |
b6bb3468 PA |
12481 | remote_get_noisy_reply (); |
12482 | if (*rs->buf == '\0') | |
ad91cd99 | 12483 | error (_("Target does not support this command.")); |
b6bb3468 | 12484 | if (strcmp (rs->buf, "OK") != 0) |
ad91cd99 | 12485 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
12486 | } |
12487 | ||
d248b706 | 12488 | static void |
46670d57 TT |
12489 | remote_enable_tracepoint (struct target_ops *self, |
12490 | struct bp_location *location) | |
d248b706 KY |
12491 | { |
12492 | struct remote_state *rs = get_remote_state (); | |
12493 | char addr_buf[40]; | |
12494 | ||
12495 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12496 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12497 | location->owner->number, addr_buf); | |
d248b706 | 12498 | putpkt (rs->buf); |
b6bb3468 | 12499 | remote_get_noisy_reply (); |
d248b706 KY |
12500 | if (*rs->buf == '\0') |
12501 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12502 | if (strcmp (rs->buf, "OK") != 0) | |
12503 | error (_("Error on target while enabling tracepoint.")); | |
12504 | } | |
12505 | ||
12506 | static void | |
780b049c TT |
12507 | remote_disable_tracepoint (struct target_ops *self, |
12508 | struct bp_location *location) | |
d248b706 KY |
12509 | { |
12510 | struct remote_state *rs = get_remote_state (); | |
12511 | char addr_buf[40]; | |
12512 | ||
12513 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12514 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12515 | location->owner->number, addr_buf); | |
d248b706 | 12516 | putpkt (rs->buf); |
b6bb3468 | 12517 | remote_get_noisy_reply (); |
d248b706 KY |
12518 | if (*rs->buf == '\0') |
12519 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12520 | if (strcmp (rs->buf, "OK") != 0) | |
12521 | error (_("Error on target while disabling tracepoint.")); | |
12522 | } | |
12523 | ||
35b1e5cc | 12524 | static void |
583f9a86 | 12525 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12526 | { |
12527 | asection *s; | |
81b9b86e | 12528 | bfd *abfd = NULL; |
35b1e5cc | 12529 | bfd_size_type size; |
608bcef2 | 12530 | bfd_vma vma; |
35b1e5cc | 12531 | int anysecs = 0; |
c2fa21f1 | 12532 | int offset = 0; |
35b1e5cc SS |
12533 | |
12534 | if (!exec_bfd) | |
12535 | return; /* No information to give. */ | |
12536 | ||
b6bb3468 PA |
12537 | struct remote_state *rs = get_remote_state (); |
12538 | ||
12539 | strcpy (rs->buf, "QTro"); | |
12540 | offset = strlen (rs->buf); | |
35b1e5cc SS |
12541 | for (s = exec_bfd->sections; s; s = s->next) |
12542 | { | |
12543 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12544 | int sec_length; |
35b1e5cc SS |
12545 | |
12546 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12547 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12548 | (s->flags & SEC_READONLY) == 0) |
12549 | continue; | |
12550 | ||
12551 | anysecs = 1; | |
81b9b86e | 12552 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12553 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12554 | sprintf_vma (tmp1, vma); |
12555 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 12556 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
b6bb3468 | 12557 | if (offset + sec_length + 1 > rs->buf_size) |
c2fa21f1 | 12558 | { |
4082afcc | 12559 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12560 | warning (_("\ |
c2fa21f1 HZ |
12561 | Too many sections for read-only sections definition packet.")); |
12562 | break; | |
12563 | } | |
b6bb3468 | 12564 | xsnprintf (rs->buf + offset, rs->buf_size - offset, ":%s,%s", |
bba74b36 | 12565 | tmp1, tmp2); |
c2fa21f1 | 12566 | offset += sec_length; |
35b1e5cc SS |
12567 | } |
12568 | if (anysecs) | |
12569 | { | |
b6bb3468 PA |
12570 | putpkt (rs->buf); |
12571 | getpkt (&rs->buf, &rs->buf_size, 0); | |
35b1e5cc SS |
12572 | } |
12573 | } | |
12574 | ||
12575 | static void | |
e2d1aae3 | 12576 | remote_trace_start (struct target_ops *self) |
35b1e5cc | 12577 | { |
b6bb3468 PA |
12578 | struct remote_state *rs = get_remote_state (); |
12579 | ||
35b1e5cc | 12580 | putpkt ("QTStart"); |
b6bb3468 PA |
12581 | remote_get_noisy_reply (); |
12582 | if (*rs->buf == '\0') | |
ad91cd99 | 12583 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12584 | if (strcmp (rs->buf, "OK") != 0) |
12585 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12586 | } |
12587 | ||
12588 | static int | |
8bd200f1 | 12589 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12590 | { |
953b98d1 | 12591 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12592 | char *p = NULL; |
0df8b418 | 12593 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12594 | extern int trace_regblock_size; |
bd3eecc3 | 12595 | enum packet_result result; |
b6bb3468 | 12596 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 12597 | |
4082afcc | 12598 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12599 | return -1; |
a744cf53 | 12600 | |
5cd63fda PA |
12601 | trace_regblock_size |
12602 | = get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; | |
00bf0b85 | 12603 | |
049dc89b JK |
12604 | putpkt ("qTStatus"); |
12605 | ||
492d29ea | 12606 | TRY |
67f41397 | 12607 | { |
b6bb3468 | 12608 | p = remote_get_noisy_reply (); |
67f41397 | 12609 | } |
492d29ea | 12610 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12611 | { |
598d3636 JK |
12612 | if (ex.error != TARGET_CLOSE_ERROR) |
12613 | { | |
12614 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12615 | return -1; | |
12616 | } | |
12617 | throw_exception (ex); | |
67f41397 | 12618 | } |
492d29ea | 12619 | END_CATCH |
00bf0b85 | 12620 | |
bd3eecc3 PA |
12621 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12622 | ||
00bf0b85 | 12623 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12624 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12625 | return -1; |
35b1e5cc | 12626 | |
00bf0b85 | 12627 | /* We're working with a live target. */ |
f5911ea1 | 12628 | ts->filename = NULL; |
00bf0b85 | 12629 | |
00bf0b85 | 12630 | if (*p++ != 'T') |
b6bb3468 | 12631 | error (_("Bogus trace status reply from target: %s"), rs->buf); |
35b1e5cc | 12632 | |
84cebc4a YQ |
12633 | /* Function 'parse_trace_status' sets default value of each field of |
12634 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12635 | parse_trace_status (p, ts); |
12636 | ||
12637 | return ts->running; | |
35b1e5cc SS |
12638 | } |
12639 | ||
70221824 | 12640 | static void |
db90e85c | 12641 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12642 | struct uploaded_tp *utp) |
12643 | { | |
12644 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12645 | char *reply; |
12646 | struct bp_location *loc; | |
12647 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12648 | size_t size = get_remote_packet_size (); |
f196051f SS |
12649 | |
12650 | if (tp) | |
12651 | { | |
c1fc2657 | 12652 | tp->hit_count = 0; |
f196051f | 12653 | tp->traceframe_usage = 0; |
c1fc2657 | 12654 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
12655 | { |
12656 | /* If the tracepoint was never downloaded, don't go asking for | |
12657 | any status. */ | |
12658 | if (tp->number_on_target == 0) | |
12659 | continue; | |
bba74b36 YQ |
12660 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12661 | phex_nz (loc->address, 0)); | |
f196051f | 12662 | putpkt (rs->buf); |
b6bb3468 | 12663 | reply = remote_get_noisy_reply (); |
f196051f SS |
12664 | if (reply && *reply) |
12665 | { | |
12666 | if (*reply == 'V') | |
12667 | parse_tracepoint_status (reply + 1, bp, utp); | |
12668 | } | |
12669 | } | |
12670 | } | |
12671 | else if (utp) | |
12672 | { | |
12673 | utp->hit_count = 0; | |
12674 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12675 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12676 | phex_nz (utp->addr, 0)); | |
f196051f | 12677 | putpkt (rs->buf); |
b6bb3468 | 12678 | reply = remote_get_noisy_reply (); |
f196051f SS |
12679 | if (reply && *reply) |
12680 | { | |
12681 | if (*reply == 'V') | |
12682 | parse_tracepoint_status (reply + 1, bp, utp); | |
12683 | } | |
12684 | } | |
12685 | } | |
12686 | ||
35b1e5cc | 12687 | static void |
74499f1b | 12688 | remote_trace_stop (struct target_ops *self) |
35b1e5cc | 12689 | { |
b6bb3468 PA |
12690 | struct remote_state *rs = get_remote_state (); |
12691 | ||
35b1e5cc | 12692 | putpkt ("QTStop"); |
b6bb3468 PA |
12693 | remote_get_noisy_reply (); |
12694 | if (*rs->buf == '\0') | |
ad91cd99 | 12695 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12696 | if (strcmp (rs->buf, "OK") != 0) |
12697 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12698 | } |
12699 | ||
12700 | static int | |
bd4c6793 TT |
12701 | remote_trace_find (struct target_ops *self, |
12702 | enum trace_find_type type, int num, | |
cc5925ad | 12703 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12704 | int *tpp) |
12705 | { | |
12706 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12707 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12708 | char *p, *reply; |
12709 | int target_frameno = -1, target_tracept = -1; | |
12710 | ||
e6e4e701 PA |
12711 | /* Lookups other than by absolute frame number depend on the current |
12712 | trace selected, so make sure it is correct on the remote end | |
12713 | first. */ | |
12714 | if (type != tfind_number) | |
12715 | set_remote_traceframe (); | |
12716 | ||
35b1e5cc SS |
12717 | p = rs->buf; |
12718 | strcpy (p, "QTFrame:"); | |
12719 | p = strchr (p, '\0'); | |
12720 | switch (type) | |
12721 | { | |
12722 | case tfind_number: | |
bba74b36 | 12723 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12724 | break; |
12725 | case tfind_pc: | |
bba74b36 | 12726 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12727 | break; |
12728 | case tfind_tp: | |
bba74b36 | 12729 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12730 | break; |
12731 | case tfind_range: | |
bba74b36 YQ |
12732 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12733 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12734 | break; |
12735 | case tfind_outside: | |
bba74b36 YQ |
12736 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12737 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12738 | break; |
12739 | default: | |
9b20d036 | 12740 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12741 | } |
12742 | ||
12743 | putpkt (rs->buf); | |
b6bb3468 | 12744 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
12745 | if (*reply == '\0') |
12746 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12747 | |
12748 | while (reply && *reply) | |
12749 | switch (*reply) | |
12750 | { | |
12751 | case 'F': | |
f197e0f1 VP |
12752 | p = ++reply; |
12753 | target_frameno = (int) strtol (p, &reply, 16); | |
12754 | if (reply == p) | |
12755 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12756 | /* Don't update our remote traceframe number cache on failure |
12757 | to select a remote traceframe. */ | |
f197e0f1 VP |
12758 | if (target_frameno == -1) |
12759 | return -1; | |
35b1e5cc SS |
12760 | break; |
12761 | case 'T': | |
f197e0f1 VP |
12762 | p = ++reply; |
12763 | target_tracept = (int) strtol (p, &reply, 16); | |
12764 | if (reply == p) | |
12765 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12766 | break; |
12767 | case 'O': /* "OK"? */ | |
12768 | if (reply[1] == 'K' && reply[2] == '\0') | |
12769 | reply += 2; | |
12770 | else | |
12771 | error (_("Bogus reply from target: %s"), reply); | |
12772 | break; | |
12773 | default: | |
12774 | error (_("Bogus reply from target: %s"), reply); | |
12775 | } | |
12776 | if (tpp) | |
12777 | *tpp = target_tracept; | |
e6e4e701 | 12778 | |
262e1174 | 12779 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12780 | return target_frameno; |
12781 | } | |
12782 | ||
12783 | static int | |
4011015b TT |
12784 | remote_get_trace_state_variable_value (struct target_ops *self, |
12785 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12786 | { |
12787 | struct remote_state *rs = get_remote_state (); | |
12788 | char *reply; | |
12789 | ULONGEST uval; | |
12790 | ||
e6e4e701 PA |
12791 | set_remote_traceframe (); |
12792 | ||
bba74b36 | 12793 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 12794 | putpkt (rs->buf); |
b6bb3468 | 12795 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
12796 | if (reply && *reply) |
12797 | { | |
12798 | if (*reply == 'V') | |
12799 | { | |
12800 | unpack_varlen_hex (reply + 1, &uval); | |
12801 | *val = (LONGEST) uval; | |
12802 | return 1; | |
12803 | } | |
12804 | } | |
12805 | return 0; | |
12806 | } | |
12807 | ||
00bf0b85 | 12808 | static int |
dc3decaf | 12809 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12810 | { |
12811 | struct remote_state *rs = get_remote_state (); | |
12812 | char *p, *reply; | |
12813 | ||
12814 | p = rs->buf; | |
12815 | strcpy (p, "QTSave:"); | |
12816 | p += strlen (p); | |
12817 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12818 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12819 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12820 | *p++ = '\0'; |
12821 | putpkt (rs->buf); | |
b6bb3468 | 12822 | reply = remote_get_noisy_reply (); |
d6c5869f | 12823 | if (*reply == '\0') |
ad91cd99 PA |
12824 | error (_("Target does not support this command.")); |
12825 | if (strcmp (reply, "OK") != 0) | |
12826 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12827 | return 0; |
12828 | } | |
12829 | ||
12830 | /* This is basically a memory transfer, but needs to be its own packet | |
12831 | because we don't know how the target actually organizes its trace | |
12832 | memory, plus we want to be able to ask for as much as possible, but | |
12833 | not be unhappy if we don't get as much as we ask for. */ | |
12834 | ||
12835 | static LONGEST | |
88ee6f45 TT |
12836 | remote_get_raw_trace_data (struct target_ops *self, |
12837 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12838 | { |
12839 | struct remote_state *rs = get_remote_state (); | |
12840 | char *reply; | |
12841 | char *p; | |
12842 | int rslt; | |
12843 | ||
12844 | p = rs->buf; | |
12845 | strcpy (p, "qTBuffer:"); | |
12846 | p += strlen (p); | |
12847 | p += hexnumstr (p, offset); | |
12848 | *p++ = ','; | |
12849 | p += hexnumstr (p, len); | |
12850 | *p++ = '\0'; | |
12851 | ||
12852 | putpkt (rs->buf); | |
b6bb3468 | 12853 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
12854 | if (reply && *reply) |
12855 | { | |
12856 | /* 'l' by itself means we're at the end of the buffer and | |
12857 | there is nothing more to get. */ | |
12858 | if (*reply == 'l') | |
12859 | return 0; | |
12860 | ||
12861 | /* Convert the reply into binary. Limit the number of bytes to | |
12862 | convert according to our passed-in buffer size, rather than | |
12863 | what was returned in the packet; if the target is | |
12864 | unexpectedly generous and gives us a bigger reply than we | |
12865 | asked for, we don't want to crash. */ | |
b6bb3468 | 12866 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
12867 | return rslt; |
12868 | } | |
12869 | ||
12870 | /* Something went wrong, flag as an error. */ | |
12871 | return -1; | |
12872 | } | |
12873 | ||
35b1e5cc | 12874 | static void |
37b25738 | 12875 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12876 | { |
12877 | struct remote_state *rs = get_remote_state (); | |
12878 | ||
4082afcc | 12879 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12880 | { |
ad91cd99 PA |
12881 | char *reply; |
12882 | ||
bba74b36 | 12883 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12884 | putpkt (rs->buf); |
b6bb3468 | 12885 | reply = remote_get_noisy_reply (); |
ad91cd99 | 12886 | if (*reply == '\0') |
33da3f1c | 12887 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12888 | if (strcmp (reply, "OK") != 0) |
12889 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12890 | } |
12891 | else if (val) | |
12892 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12893 | } |
12894 | ||
dc146f7c VP |
12895 | static int |
12896 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12897 | { | |
12898 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12899 | |
7aabaf9d SM |
12900 | if (info != NULL && info->priv != NULL) |
12901 | return get_remote_thread_info (info)->core; | |
12902 | ||
dc146f7c VP |
12903 | return -1; |
12904 | } | |
12905 | ||
4daf5ac0 | 12906 | static void |
736d5b1f | 12907 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12908 | { |
12909 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12910 | char *reply; |
4daf5ac0 | 12911 | |
bba74b36 | 12912 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12913 | putpkt (rs->buf); |
b6bb3468 | 12914 | reply = remote_get_noisy_reply (); |
ad91cd99 | 12915 | if (*reply == '\0') |
4daf5ac0 | 12916 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12917 | if (strcmp (reply, "OK") != 0) |
12918 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12919 | } |
12920 | ||
2098b393 | 12921 | static traceframe_info_up |
a893e81f | 12922 | remote_traceframe_info (struct target_ops *self) |
b3b9301e | 12923 | { |
b7b030ad TT |
12924 | gdb::unique_xmalloc_ptr<char> text |
12925 | = target_read_stralloc (¤t_target, TARGET_OBJECT_TRACEFRAME_INFO, | |
12926 | NULL); | |
b3b9301e | 12927 | if (text != NULL) |
b7b030ad | 12928 | return parse_traceframe_info (text.get ()); |
b3b9301e PA |
12929 | |
12930 | return NULL; | |
12931 | } | |
12932 | ||
405f8e94 SS |
12933 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12934 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12935 | if the packet is not supported, and 0 if the minimum instruction | |
12936 | length is unknown. */ | |
12937 | ||
12938 | static int | |
0e67620a | 12939 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12940 | { |
12941 | struct remote_state *rs = get_remote_state (); | |
12942 | char *reply; | |
12943 | ||
e886a173 PA |
12944 | /* If we're not debugging a process yet, the IPA can't be |
12945 | loaded. */ | |
12946 | if (!target_has_execution) | |
12947 | return 0; | |
12948 | ||
12949 | /* Make sure the remote is pointing at the right process. */ | |
12950 | set_general_process (); | |
12951 | ||
bba74b36 | 12952 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 12953 | putpkt (rs->buf); |
b6bb3468 | 12954 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
12955 | if (*reply == '\0') |
12956 | return -1; | |
12957 | else | |
12958 | { | |
12959 | ULONGEST min_insn_len; | |
12960 | ||
12961 | unpack_varlen_hex (reply, &min_insn_len); | |
12962 | ||
12963 | return (int) min_insn_len; | |
12964 | } | |
12965 | } | |
12966 | ||
f6f899bf | 12967 | static void |
4da384be | 12968 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12969 | { |
4082afcc | 12970 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12971 | { |
12972 | struct remote_state *rs = get_remote_state (); | |
12973 | char *buf = rs->buf; | |
12974 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12975 | enum packet_result result; | |
12976 | ||
12977 | gdb_assert (val >= 0 || val == -1); | |
12978 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12979 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12980 | if (val < 0) | |
12981 | { | |
12982 | *buf++ = '-'; | |
12983 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12984 | } | |
12985 | else | |
12986 | buf += hexnumstr (buf, (ULONGEST) val); | |
12987 | ||
12988 | putpkt (rs->buf); | |
b6bb3468 | 12989 | remote_get_noisy_reply (); |
f6f899bf HAQ |
12990 | result = packet_ok (rs->buf, |
12991 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12992 | ||
12993 | if (result != PACKET_OK) | |
12994 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12995 | } | |
12996 | } | |
12997 | ||
f196051f | 12998 | static int |
d9e68a2c TT |
12999 | remote_set_trace_notes (struct target_ops *self, |
13000 | const char *user, const char *notes, | |
ca623f82 | 13001 | const char *stop_notes) |
f196051f SS |
13002 | { |
13003 | struct remote_state *rs = get_remote_state (); | |
13004 | char *reply; | |
13005 | char *buf = rs->buf; | |
13006 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13007 | int nbytes; | |
13008 | ||
13009 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13010 | if (user) | |
13011 | { | |
13012 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13013 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13014 | buf += 2 * nbytes; |
13015 | *buf++ = ';'; | |
13016 | } | |
13017 | if (notes) | |
13018 | { | |
13019 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13020 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13021 | buf += 2 * nbytes; |
13022 | *buf++ = ';'; | |
13023 | } | |
13024 | if (stop_notes) | |
13025 | { | |
13026 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13027 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13028 | buf += 2 * nbytes; |
13029 | *buf++ = ';'; | |
13030 | } | |
13031 | /* Ensure the buffer is terminated. */ | |
13032 | *buf = '\0'; | |
13033 | ||
13034 | putpkt (rs->buf); | |
b6bb3468 | 13035 | reply = remote_get_noisy_reply (); |
f196051f SS |
13036 | if (*reply == '\0') |
13037 | return 0; | |
13038 | ||
13039 | if (strcmp (reply, "OK") != 0) | |
13040 | error (_("Bogus reply from target: %s"), reply); | |
13041 | ||
13042 | return 1; | |
13043 | } | |
13044 | ||
d1feda86 | 13045 | static int |
2c152180 | 13046 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 13047 | { |
4082afcc | 13048 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13049 | { |
13050 | struct remote_state *rs = get_remote_state (); | |
13051 | ||
13052 | /* If the stub supports QAgent. */ | |
bba74b36 | 13053 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13054 | putpkt (rs->buf); |
13055 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13056 | ||
13057 | if (strcmp (rs->buf, "OK") == 0) | |
13058 | { | |
13059 | use_agent = use; | |
13060 | return 1; | |
13061 | } | |
13062 | } | |
13063 | ||
13064 | return 0; | |
13065 | } | |
13066 | ||
13067 | static int | |
fe38f897 | 13068 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 13069 | { |
4082afcc | 13070 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13071 | } |
13072 | ||
9accd112 MM |
13073 | struct btrace_target_info |
13074 | { | |
13075 | /* The ptid of the traced thread. */ | |
13076 | ptid_t ptid; | |
f4abbc16 MM |
13077 | |
13078 | /* The obtained branch trace configuration. */ | |
13079 | struct btrace_config conf; | |
9accd112 MM |
13080 | }; |
13081 | ||
f4abbc16 MM |
13082 | /* Reset our idea of our target's btrace configuration. */ |
13083 | ||
13084 | static void | |
13085 | remote_btrace_reset (void) | |
13086 | { | |
13087 | struct remote_state *rs = get_remote_state (); | |
13088 | ||
13089 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13090 | } | |
13091 | ||
f4abbc16 MM |
13092 | /* Synchronize the configuration with the target. */ |
13093 | ||
13094 | static void | |
13095 | btrace_sync_conf (const struct btrace_config *conf) | |
13096 | { | |
d33501a5 MM |
13097 | struct packet_config *packet; |
13098 | struct remote_state *rs; | |
13099 | char *buf, *pos, *endbuf; | |
13100 | ||
13101 | rs = get_remote_state (); | |
13102 | buf = rs->buf; | |
13103 | endbuf = buf + get_remote_packet_size (); | |
13104 | ||
13105 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13106 | if (packet_config_support (packet) == PACKET_ENABLE | |
13107 | && conf->bts.size != rs->btrace_config.bts.size) | |
13108 | { | |
13109 | pos = buf; | |
13110 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13111 | conf->bts.size); | |
13112 | ||
13113 | putpkt (buf); | |
13114 | getpkt (&buf, &rs->buf_size, 0); | |
13115 | ||
13116 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13117 | { | |
13118 | if (buf[0] == 'E' && buf[1] == '.') | |
13119 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13120 | else | |
13121 | error (_("Failed to configure the BTS buffer size.")); | |
13122 | } | |
13123 | ||
13124 | rs->btrace_config.bts.size = conf->bts.size; | |
13125 | } | |
b20a6524 MM |
13126 | |
13127 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13128 | if (packet_config_support (packet) == PACKET_ENABLE | |
13129 | && conf->pt.size != rs->btrace_config.pt.size) | |
13130 | { | |
13131 | pos = buf; | |
13132 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13133 | conf->pt.size); | |
13134 | ||
13135 | putpkt (buf); | |
13136 | getpkt (&buf, &rs->buf_size, 0); | |
13137 | ||
13138 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13139 | { | |
13140 | if (buf[0] == 'E' && buf[1] == '.') | |
13141 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13142 | else | |
13143 | error (_("Failed to configure the trace buffer size.")); | |
13144 | } | |
13145 | ||
13146 | rs->btrace_config.pt.size = conf->pt.size; | |
13147 | } | |
f4abbc16 MM |
13148 | } |
13149 | ||
13150 | /* Read the current thread's btrace configuration from the target and | |
13151 | store it into CONF. */ | |
13152 | ||
13153 | static void | |
13154 | btrace_read_config (struct btrace_config *conf) | |
13155 | { | |
b7b030ad TT |
13156 | gdb::unique_xmalloc_ptr<char> xml |
13157 | = target_read_stralloc (¤t_target, TARGET_OBJECT_BTRACE_CONF, ""); | |
f4abbc16 | 13158 | if (xml != NULL) |
b7b030ad | 13159 | parse_xml_btrace_conf (conf, xml.get ()); |
f4abbc16 MM |
13160 | } |
13161 | ||
c0272db5 TW |
13162 | /* Maybe reopen target btrace. */ |
13163 | ||
13164 | static void | |
13165 | remote_btrace_maybe_reopen (void) | |
13166 | { | |
13167 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13168 | struct thread_info *tp; |
13169 | int btrace_target_pushed = 0; | |
13170 | int warned = 0; | |
13171 | ||
5ed8105e PA |
13172 | scoped_restore_current_thread restore_thread; |
13173 | ||
c0272db5 TW |
13174 | ALL_NON_EXITED_THREADS (tp) |
13175 | { | |
13176 | set_general_thread (tp->ptid); | |
13177 | ||
13178 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13179 | btrace_read_config (&rs->btrace_config); | |
13180 | ||
13181 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13182 | continue; | |
13183 | ||
13184 | #if !defined (HAVE_LIBIPT) | |
13185 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13186 | { | |
13187 | if (!warned) | |
13188 | { | |
13189 | warned = 1; | |
c4e12631 MM |
13190 | warning (_("Target is recording using Intel Processor Trace " |
13191 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13192 | } |
13193 | ||
13194 | continue; | |
13195 | } | |
13196 | #endif /* !defined (HAVE_LIBIPT) */ | |
13197 | ||
13198 | /* Push target, once, but before anything else happens. This way our | |
13199 | changes to the threads will be cleaned up by unpushing the target | |
13200 | in case btrace_read_config () throws. */ | |
13201 | if (!btrace_target_pushed) | |
13202 | { | |
13203 | btrace_target_pushed = 1; | |
13204 | record_btrace_push_target (); | |
13205 | printf_filtered (_("Target is recording using %s.\n"), | |
13206 | btrace_format_string (rs->btrace_config.format)); | |
13207 | } | |
13208 | ||
13209 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13210 | tp->btrace.target->ptid = tp->ptid; | |
13211 | tp->btrace.target->conf = rs->btrace_config; | |
13212 | } | |
c0272db5 TW |
13213 | } |
13214 | ||
9accd112 MM |
13215 | /* Enable branch tracing. */ |
13216 | ||
13217 | static struct btrace_target_info * | |
f4abbc16 MM |
13218 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
13219 | const struct btrace_config *conf) | |
9accd112 MM |
13220 | { |
13221 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13222 | struct packet_config *packet = NULL; |
9accd112 MM |
13223 | struct remote_state *rs = get_remote_state (); |
13224 | char *buf = rs->buf; | |
13225 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13226 | ||
b20a6524 MM |
13227 | switch (conf->format) |
13228 | { | |
13229 | case BTRACE_FORMAT_BTS: | |
13230 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13231 | break; | |
13232 | ||
13233 | case BTRACE_FORMAT_PT: | |
13234 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13235 | break; | |
13236 | } | |
13237 | ||
13238 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13239 | error (_("Target does not support branch tracing.")); |
13240 | ||
f4abbc16 MM |
13241 | btrace_sync_conf (conf); |
13242 | ||
9accd112 MM |
13243 | set_general_thread (ptid); |
13244 | ||
13245 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13246 | putpkt (rs->buf); | |
13247 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13248 | ||
13249 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13250 | { | |
13251 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13252 | error (_("Could not enable branch tracing for %s: %s"), | |
13253 | target_pid_to_str (ptid), rs->buf + 2); | |
13254 | else | |
13255 | error (_("Could not enable branch tracing for %s."), | |
13256 | target_pid_to_str (ptid)); | |
13257 | } | |
13258 | ||
8d749320 | 13259 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13260 | tinfo->ptid = ptid; |
13261 | ||
f4abbc16 MM |
13262 | /* If we fail to read the configuration, we lose some information, but the |
13263 | tracing itself is not impacted. */ | |
492d29ea PA |
13264 | TRY |
13265 | { | |
13266 | btrace_read_config (&tinfo->conf); | |
13267 | } | |
13268 | CATCH (err, RETURN_MASK_ERROR) | |
13269 | { | |
13270 | if (err.message != NULL) | |
13271 | warning ("%s", err.message); | |
13272 | } | |
13273 | END_CATCH | |
f4abbc16 | 13274 | |
9accd112 MM |
13275 | return tinfo; |
13276 | } | |
13277 | ||
13278 | /* Disable branch tracing. */ | |
13279 | ||
13280 | static void | |
25e95349 TT |
13281 | remote_disable_btrace (struct target_ops *self, |
13282 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13283 | { |
13284 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13285 | struct remote_state *rs = get_remote_state (); | |
13286 | char *buf = rs->buf; | |
13287 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13288 | ||
4082afcc | 13289 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13290 | error (_("Target does not support branch tracing.")); |
13291 | ||
13292 | set_general_thread (tinfo->ptid); | |
13293 | ||
13294 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13295 | putpkt (rs->buf); | |
13296 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13297 | ||
13298 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13299 | { | |
13300 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13301 | error (_("Could not disable branch tracing for %s: %s"), | |
13302 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13303 | else | |
13304 | error (_("Could not disable branch tracing for %s."), | |
13305 | target_pid_to_str (tinfo->ptid)); | |
13306 | } | |
13307 | ||
13308 | xfree (tinfo); | |
13309 | } | |
13310 | ||
13311 | /* Teardown branch tracing. */ | |
13312 | ||
13313 | static void | |
1777056d TT |
13314 | remote_teardown_btrace (struct target_ops *self, |
13315 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13316 | { |
13317 | /* We must not talk to the target during teardown. */ | |
13318 | xfree (tinfo); | |
13319 | } | |
13320 | ||
13321 | /* Read the branch trace. */ | |
13322 | ||
969c39fb | 13323 | static enum btrace_error |
39c49f83 | 13324 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 13325 | struct btrace_data *btrace, |
969c39fb | 13326 | struct btrace_target_info *tinfo, |
9accd112 MM |
13327 | enum btrace_read_type type) |
13328 | { | |
13329 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13330 | const char *annex; |
9accd112 | 13331 | |
4082afcc | 13332 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13333 | error (_("Target does not support branch tracing.")); |
13334 | ||
13335 | #if !defined(HAVE_LIBEXPAT) | |
13336 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13337 | #endif | |
13338 | ||
13339 | switch (type) | |
13340 | { | |
864089d2 | 13341 | case BTRACE_READ_ALL: |
9accd112 MM |
13342 | annex = "all"; |
13343 | break; | |
864089d2 | 13344 | case BTRACE_READ_NEW: |
9accd112 MM |
13345 | annex = "new"; |
13346 | break; | |
969c39fb MM |
13347 | case BTRACE_READ_DELTA: |
13348 | annex = "delta"; | |
13349 | break; | |
9accd112 MM |
13350 | default: |
13351 | internal_error (__FILE__, __LINE__, | |
13352 | _("Bad branch tracing read type: %u."), | |
13353 | (unsigned int) type); | |
13354 | } | |
13355 | ||
b7b030ad TT |
13356 | gdb::unique_xmalloc_ptr<char> xml |
13357 | = target_read_stralloc (¤t_target, TARGET_OBJECT_BTRACE, annex); | |
969c39fb MM |
13358 | if (xml == NULL) |
13359 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 13360 | |
b7b030ad | 13361 | parse_xml_btrace (btrace, xml.get ()); |
9accd112 | 13362 | |
969c39fb | 13363 | return BTRACE_ERR_NONE; |
9accd112 MM |
13364 | } |
13365 | ||
f4abbc16 MM |
13366 | static const struct btrace_config * |
13367 | remote_btrace_conf (struct target_ops *self, | |
13368 | const struct btrace_target_info *tinfo) | |
13369 | { | |
13370 | return &tinfo->conf; | |
13371 | } | |
13372 | ||
ced63ec0 | 13373 | static int |
5436ff03 | 13374 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 13375 | { |
4082afcc PA |
13376 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13377 | == PACKET_ENABLE); | |
ced63ec0 GB |
13378 | } |
13379 | ||
9dd130a0 TT |
13380 | /* Implementation of to_load. */ |
13381 | ||
13382 | static void | |
9cbe5fff | 13383 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
13384 | { |
13385 | generic_load (name, from_tty); | |
13386 | } | |
13387 | ||
c78fa86a GB |
13388 | /* Accepts an integer PID; returns a string representing a file that |
13389 | can be opened on the remote side to get the symbols for the child | |
13390 | process. Returns NULL if the operation is not supported. */ | |
13391 | ||
13392 | static char * | |
13393 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
13394 | { | |
b7b030ad | 13395 | static gdb::unique_xmalloc_ptr<char> filename; |
835205d0 GB |
13396 | struct inferior *inf; |
13397 | char *annex = NULL; | |
c78fa86a GB |
13398 | |
13399 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13400 | return NULL; | |
13401 | ||
835205d0 GB |
13402 | inf = find_inferior_pid (pid); |
13403 | if (inf == NULL) | |
13404 | internal_error (__FILE__, __LINE__, | |
13405 | _("not currently attached to process %d"), pid); | |
13406 | ||
13407 | if (!inf->fake_pid_p) | |
13408 | { | |
13409 | const int annex_size = 9; | |
13410 | ||
224c3ddb | 13411 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13412 | xsnprintf (annex, annex_size, "%x", pid); |
13413 | } | |
13414 | ||
c78fa86a GB |
13415 | filename = target_read_stralloc (¤t_target, |
13416 | TARGET_OBJECT_EXEC_FILE, annex); | |
13417 | ||
b7b030ad | 13418 | return filename.get (); |
c78fa86a GB |
13419 | } |
13420 | ||
750ce8d1 YQ |
13421 | /* Implement the to_can_do_single_step target_ops method. */ |
13422 | ||
13423 | static int | |
13424 | remote_can_do_single_step (struct target_ops *ops) | |
13425 | { | |
13426 | /* We can only tell whether target supports single step or not by | |
13427 | supported s and S vCont actions if the stub supports vContSupported | |
13428 | feature. If the stub doesn't support vContSupported feature, | |
13429 | we have conservatively to think target doesn't supports single | |
13430 | step. */ | |
13431 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13432 | { | |
13433 | struct remote_state *rs = get_remote_state (); | |
13434 | ||
13435 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13436 | remote_vcont_probe (rs); | |
13437 | ||
13438 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13439 | } | |
13440 | else | |
13441 | return 0; | |
13442 | } | |
13443 | ||
3a00c802 PA |
13444 | /* Implementation of the to_execution_direction method for the remote |
13445 | target. */ | |
13446 | ||
13447 | static enum exec_direction_kind | |
13448 | remote_execution_direction (struct target_ops *self) | |
13449 | { | |
13450 | struct remote_state *rs = get_remote_state (); | |
13451 | ||
13452 | return rs->last_resume_exec_dir; | |
13453 | } | |
13454 | ||
f6327dcb KB |
13455 | /* Return pointer to the thread_info struct which corresponds to |
13456 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13457 | ||
13458 | static struct thread_info * | |
13459 | remote_thread_handle_to_thread_info (struct target_ops *ops, | |
13460 | const gdb_byte *thread_handle, | |
13461 | int handle_len, | |
13462 | struct inferior *inf) | |
13463 | { | |
13464 | struct thread_info *tp; | |
13465 | ||
13466 | ALL_NON_EXITED_THREADS (tp) | |
13467 | { | |
7aabaf9d | 13468 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
13469 | |
13470 | if (tp->inf == inf && priv != NULL) | |
13471 | { | |
7aabaf9d | 13472 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 13473 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
13474 | handle_len, priv->thread_handle.size ()); |
13475 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
13476 | handle_len) == 0) |
13477 | return tp; | |
13478 | } | |
13479 | } | |
13480 | ||
13481 | return NULL; | |
13482 | } | |
13483 | ||
c906108c | 13484 | static void |
fba45db2 | 13485 | init_remote_ops (void) |
c906108c | 13486 | { |
c5aa993b | 13487 | remote_ops.to_shortname = "remote"; |
c906108c | 13488 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13489 | remote_ops.to_doc = |
c906108c | 13490 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13491 | Specify the serial device it is connected to\n\ |
13492 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13493 | remote_ops.to_open = remote_open; |
13494 | remote_ops.to_close = remote_close; | |
c906108c | 13495 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13496 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13497 | remote_ops.to_resume = remote_resume; |
85ad3aaf | 13498 | remote_ops.to_commit_resume = remote_commit_resume; |
c906108c SS |
13499 | remote_ops.to_wait = remote_wait; |
13500 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13501 | remote_ops.to_store_registers = remote_store_registers; | |
13502 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13503 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13504 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13505 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13506 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13507 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13508 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13509 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13510 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13511 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13512 | remote_ops.to_watchpoint_addr_within_range = |
13513 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13514 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13515 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13516 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13517 | remote_ops.to_region_ok_for_hw_watchpoint |
13518 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13519 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13520 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13521 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13522 | remote_ops.to_load = remote_load; |
c906108c | 13523 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13524 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13525 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13526 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13527 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13528 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13529 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13530 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13531 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13532 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13533 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13534 | remote_ops.to_interrupt = remote_interrupt; |
93692b58 | 13535 | remote_ops.to_pass_ctrlc = remote_pass_ctrlc; |
4b8a223f | 13536 | remote_ops.to_xfer_partial = remote_xfer_partial; |
09c98b44 | 13537 | remote_ops.to_get_memory_xfer_limit = remote_get_memory_xfer_limit; |
96baa820 | 13538 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13539 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13540 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13541 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13542 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13543 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13544 | remote_ops.to_has_memory = default_child_has_memory; | |
13545 | remote_ops.to_has_stack = default_child_has_stack; | |
13546 | remote_ops.to_has_registers = default_child_has_registers; | |
13547 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13548 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13549 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13550 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13551 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13552 | remote_ops.to_flash_erase = remote_flash_erase; |
13553 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13554 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13555 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13556 | remote_ops.to_can_async_p = remote_can_async_p; |
13557 | remote_ops.to_is_async_p = remote_is_async_p; | |
13558 | remote_ops.to_async = remote_async; | |
65706a29 | 13559 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13560 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13561 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13562 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13563 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13564 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13565 | remote_ops.to_supports_disable_randomization |
13566 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13567 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13568 | remote_ops.to_fileio_open = remote_hostio_open; |
13569 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13570 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13571 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13572 | remote_ops.to_fileio_close = remote_hostio_close; |
13573 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13574 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13575 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13576 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13577 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13578 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13579 | remote_ops.to_trace_init = remote_trace_init; |
13580 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13581 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13582 | remote_ops.to_download_trace_state_variable |
13583 | = remote_download_trace_state_variable; | |
d248b706 KY |
13584 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13585 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13586 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13587 | remote_ops.to_trace_start = remote_trace_start; | |
13588 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13589 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13590 | remote_ops.to_trace_stop = remote_trace_stop; |
13591 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13592 | remote_ops.to_get_trace_state_variable_value |
13593 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13594 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13595 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13596 | remote_ops.to_upload_trace_state_variables |
13597 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13598 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13599 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13600 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13601 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13602 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13603 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13604 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13605 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13606 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13607 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13608 | remote_ops.to_static_tracepoint_marker_at |
13609 | = remote_static_tracepoint_marker_at; | |
13610 | remote_ops.to_static_tracepoint_markers_by_strid | |
13611 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13612 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13613 | remote_ops.to_use_agent = remote_use_agent; |
13614 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13615 | remote_ops.to_enable_btrace = remote_enable_btrace; |
13616 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13617 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13618 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13619 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13620 | remote_ops.to_augmented_libraries_svr4_read = |
13621 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13622 | remote_ops.to_follow_fork = remote_follow_fork; |
13623 | remote_ops.to_follow_exec = remote_follow_exec; | |
13624 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13625 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13626 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13627 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13628 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13629 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
3a00c802 | 13630 | remote_ops.to_execution_direction = remote_execution_direction; |
f6327dcb KB |
13631 | remote_ops.to_thread_handle_to_thread_info = |
13632 | remote_thread_handle_to_thread_info; | |
c906108c SS |
13633 | } |
13634 | ||
13635 | /* Set up the extended remote vector by making a copy of the standard | |
13636 | remote vector and adding to it. */ | |
13637 | ||
13638 | static void | |
fba45db2 | 13639 | init_extended_remote_ops (void) |
c906108c SS |
13640 | { |
13641 | extended_remote_ops = remote_ops; | |
13642 | ||
0f71a2f6 | 13643 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13644 | extended_remote_ops.to_longname = |
c906108c | 13645 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13646 | extended_remote_ops.to_doc = |
c906108c | 13647 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13648 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13649 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13650 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13651 | extended_remote_ops.to_detach = extended_remote_detach; |
13652 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13653 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13654 | extended_remote_ops.to_supports_disable_randomization |
13655 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13656 | } |
13657 | ||
6426a772 | 13658 | static int |
6a109b6b | 13659 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13660 | { |
5d93a237 TT |
13661 | struct remote_state *rs = get_remote_state (); |
13662 | ||
3015c064 SM |
13663 | /* We don't go async if the user has explicitly prevented it with the |
13664 | "maint set target-async" command. */ | |
c6ebd6cf | 13665 | if (!target_async_permitted) |
75c99385 PA |
13666 | return 0; |
13667 | ||
23860348 | 13668 | /* We're async whenever the serial device is. */ |
5d93a237 | 13669 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13670 | } |
13671 | ||
13672 | static int | |
6a109b6b | 13673 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13674 | { |
5d93a237 TT |
13675 | struct remote_state *rs = get_remote_state (); |
13676 | ||
c6ebd6cf | 13677 | if (!target_async_permitted) |
75c99385 PA |
13678 | /* We only enable async when the user specifically asks for it. */ |
13679 | return 0; | |
13680 | ||
23860348 | 13681 | /* We're async whenever the serial device is. */ |
5d93a237 | 13682 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13683 | } |
13684 | ||
2acceee2 JM |
13685 | /* Pass the SERIAL event on and up to the client. One day this code |
13686 | will be able to delay notifying the client of an event until the | |
23860348 | 13687 | point where an entire packet has been received. */ |
2acceee2 | 13688 | |
2acceee2 JM |
13689 | static serial_event_ftype remote_async_serial_handler; |
13690 | ||
6426a772 | 13691 | static void |
819cc324 | 13692 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13693 | { |
2acceee2 JM |
13694 | /* Don't propogate error information up to the client. Instead let |
13695 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13696 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13697 | } |
13698 | ||
74531fed PA |
13699 | static void |
13700 | remote_async_inferior_event_handler (gdb_client_data data) | |
13701 | { | |
13702 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13703 | } | |
13704 | ||
2acceee2 | 13705 | static void |
6a3753b3 | 13706 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13707 | { |
5d93a237 TT |
13708 | struct remote_state *rs = get_remote_state (); |
13709 | ||
6a3753b3 | 13710 | if (enable) |
2acceee2 | 13711 | { |
88b496c3 | 13712 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13713 | |
13714 | /* If there are pending events in the stop reply queue tell the | |
13715 | event loop to process them. */ | |
13716 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13717 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13718 | /* For simplicity, below we clear the pending events token |
13719 | without remembering whether it is marked, so here we always | |
13720 | mark it. If there's actually no pending notification to | |
13721 | process, this ends up being a no-op (other than a spurious | |
13722 | event-loop wakeup). */ | |
13723 | if (target_is_non_stop_p ()) | |
13724 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13725 | } |
13726 | else | |
b7d2e916 PA |
13727 | { |
13728 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13729 | /* If the core is disabling async, it doesn't want to be |
13730 | disturbed with target events. Clear all async event sources | |
13731 | too. */ | |
b7d2e916 | 13732 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13733 | if (target_is_non_stop_p ()) |
13734 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13735 | } |
6426a772 JM |
13736 | } |
13737 | ||
65706a29 PA |
13738 | /* Implementation of the to_thread_events method. */ |
13739 | ||
13740 | static void | |
13741 | remote_thread_events (struct target_ops *ops, int enable) | |
13742 | { | |
13743 | struct remote_state *rs = get_remote_state (); | |
13744 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13745 | |
13746 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13747 | return; | |
13748 | ||
13749 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13750 | putpkt (rs->buf); | |
13751 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13752 | ||
13753 | switch (packet_ok (rs->buf, | |
13754 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13755 | { | |
13756 | case PACKET_OK: | |
13757 | if (strcmp (rs->buf, "OK") != 0) | |
13758 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13759 | break; | |
13760 | case PACKET_ERROR: | |
13761 | warning (_("Remote failure reply: %s"), rs->buf); | |
13762 | break; | |
13763 | case PACKET_UNKNOWN: | |
13764 | break; | |
13765 | } | |
13766 | } | |
13767 | ||
5a2468f5 | 13768 | static void |
981a3fb3 | 13769 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 13770 | { |
635c7e8a | 13771 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13772 | } |
13773 | ||
d471ea57 | 13774 | static void |
981a3fb3 | 13775 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 13776 | { |
37a105a1 | 13777 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13778 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13779 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13780 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13781 | |
2e783024 | 13782 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13783 | for (; list != NULL; list = list->next) |
13784 | if (strcmp (list->name, "Z-packet") == 0) | |
13785 | continue; | |
427c3a89 DJ |
13786 | else if (list->type == not_set_cmd) |
13787 | /* Alias commands are exactly like the original, except they | |
13788 | don't have the normal type. */ | |
13789 | continue; | |
13790 | else | |
37a105a1 | 13791 | { |
2e783024 | 13792 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13793 | |
112e8700 SM |
13794 | uiout->field_string ("name", list->name); |
13795 | uiout->text (": "); | |
427c3a89 | 13796 | if (list->type == show_cmd) |
f5c4fcd9 | 13797 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13798 | else |
13799 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13800 | } |
d471ea57 | 13801 | } |
5a2468f5 | 13802 | |
0f71a2f6 | 13803 | |
23860348 | 13804 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13805 | static void |
13806 | remote_new_objfile (struct objfile *objfile) | |
13807 | { | |
5d93a237 TT |
13808 | struct remote_state *rs = get_remote_state (); |
13809 | ||
13810 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13811 | remote_check_symbols (); |
dc8acb97 MS |
13812 | } |
13813 | ||
00bf0b85 SS |
13814 | /* Pull all the tracepoints defined on the target and create local |
13815 | data structures representing them. We don't want to create real | |
13816 | tracepoints yet, we don't want to mess up the user's existing | |
13817 | collection. */ | |
13818 | ||
13819 | static int | |
ab6617cc | 13820 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13821 | { |
00bf0b85 SS |
13822 | struct remote_state *rs = get_remote_state (); |
13823 | char *p; | |
d5551862 | 13824 | |
00bf0b85 SS |
13825 | /* Ask for a first packet of tracepoint definition. */ |
13826 | putpkt ("qTfP"); | |
13827 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13828 | p = rs->buf; | |
13829 | while (*p && *p != 'l') | |
d5551862 | 13830 | { |
00bf0b85 SS |
13831 | parse_tracepoint_definition (p, utpp); |
13832 | /* Ask for another packet of tracepoint definition. */ | |
13833 | putpkt ("qTsP"); | |
13834 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13835 | p = rs->buf; | |
d5551862 | 13836 | } |
00bf0b85 | 13837 | return 0; |
d5551862 SS |
13838 | } |
13839 | ||
00bf0b85 | 13840 | static int |
181e3713 TT |
13841 | remote_upload_trace_state_variables (struct target_ops *self, |
13842 | struct uploaded_tsv **utsvp) | |
d5551862 | 13843 | { |
00bf0b85 | 13844 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13845 | char *p; |
d5551862 | 13846 | |
00bf0b85 SS |
13847 | /* Ask for a first packet of variable definition. */ |
13848 | putpkt ("qTfV"); | |
d5551862 SS |
13849 | getpkt (&rs->buf, &rs->buf_size, 0); |
13850 | p = rs->buf; | |
00bf0b85 | 13851 | while (*p && *p != 'l') |
d5551862 | 13852 | { |
00bf0b85 SS |
13853 | parse_tsv_definition (p, utsvp); |
13854 | /* Ask for another packet of variable definition. */ | |
13855 | putpkt ("qTsV"); | |
d5551862 SS |
13856 | getpkt (&rs->buf, &rs->buf_size, 0); |
13857 | p = rs->buf; | |
13858 | } | |
00bf0b85 | 13859 | return 0; |
d5551862 SS |
13860 | } |
13861 | ||
c1e36e3e PA |
13862 | /* The "set/show range-stepping" show hook. */ |
13863 | ||
13864 | static void | |
13865 | show_range_stepping (struct ui_file *file, int from_tty, | |
13866 | struct cmd_list_element *c, | |
13867 | const char *value) | |
13868 | { | |
13869 | fprintf_filtered (file, | |
13870 | _("Debugger's willingness to use range stepping " | |
13871 | "is %s.\n"), value); | |
13872 | } | |
13873 | ||
13874 | /* The "set/show range-stepping" set hook. */ | |
13875 | ||
13876 | static void | |
eb4c3f4a | 13877 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
13878 | struct cmd_list_element *c) |
13879 | { | |
5d93a237 TT |
13880 | struct remote_state *rs = get_remote_state (); |
13881 | ||
c1e36e3e PA |
13882 | /* Whene enabling, check whether range stepping is actually |
13883 | supported by the target, and warn if not. */ | |
13884 | if (use_range_stepping) | |
13885 | { | |
5d93a237 | 13886 | if (rs->remote_desc != NULL) |
c1e36e3e | 13887 | { |
4082afcc | 13888 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13889 | remote_vcont_probe (rs); |
13890 | ||
4082afcc | 13891 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13892 | && rs->supports_vCont.r) |
13893 | return; | |
13894 | } | |
13895 | ||
13896 | warning (_("Range stepping is not supported by the current target")); | |
13897 | } | |
13898 | } | |
13899 | ||
c906108c | 13900 | void |
fba45db2 | 13901 | _initialize_remote (void) |
c906108c | 13902 | { |
9a7071a8 | 13903 | struct cmd_list_element *cmd; |
6f937416 | 13904 | const char *cmd_name; |
ea9c271d | 13905 | |
0f71a2f6 | 13906 | /* architecture specific data */ |
2bc416ba | 13907 | remote_gdbarch_data_handle = |
23860348 | 13908 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13909 | remote_g_packet_data_handle = |
13910 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13911 | |
94585166 DB |
13912 | remote_pspace_data |
13913 | = register_program_space_data_with_cleanup (NULL, | |
13914 | remote_pspace_data_cleanup); | |
13915 | ||
ea9c271d DJ |
13916 | /* Initialize the per-target state. At the moment there is only one |
13917 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13918 | time. */ |
13919 | remote_state = new_remote_state (); | |
ea9c271d | 13920 | |
c906108c SS |
13921 | init_remote_ops (); |
13922 | add_target (&remote_ops); | |
13923 | ||
13924 | init_extended_remote_ops (); | |
13925 | add_target (&extended_remote_ops); | |
cce74817 | 13926 | |
dc8acb97 | 13927 | /* Hook into new objfile notification. */ |
06d3b283 | 13928 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13929 | /* We're no longer interested in notification events of an inferior |
13930 | when it exits. */ | |
13931 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13932 | |
c906108c SS |
13933 | #if 0 |
13934 | init_remote_threadtests (); | |
13935 | #endif | |
13936 | ||
722247f1 | 13937 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13938 | /* set/show remote ... */ |
d471ea57 | 13939 | |
1bedd215 | 13940 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13941 | Remote protocol specific variables\n\ |
13942 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13943 | the packets being used"), |
cff3e48b | 13944 | &remote_set_cmdlist, "set remote ", |
23860348 | 13945 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13946 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13947 | Remote protocol specific variables\n\ |
13948 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13949 | the packets being used"), |
cff3e48b | 13950 | &remote_show_cmdlist, "show remote ", |
23860348 | 13951 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13952 | |
1a966eab AC |
13953 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13954 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13955 | Argument is a single section name (default: all loaded sections).\n\ |
13956 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13957 | &cmdlist); |
13958 | ||
1a966eab AC |
13959 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13960 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13961 | maintenance packet TEXT\n\ |
13962 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13963 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13964 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13965 | terminating `#' character and checksum."), |
c906108c SS |
13966 | &maintenancelist); |
13967 | ||
7915a72c AC |
13968 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13969 | Set whether to send break if interrupted."), _("\ | |
13970 | Show whether to send break if interrupted."), _("\ | |
13971 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13972 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13973 | &setlist, &showlist); |
9a7071a8 JB |
13974 | cmd_name = "remotebreak"; |
13975 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13976 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13977 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13978 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13979 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13980 | ||
13981 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13982 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13983 | _("\ | |
9a7071a8 JB |
13984 | Set interrupt sequence to remote target."), _("\ |
13985 | Show interrupt sequence to remote target."), _("\ | |
13986 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13987 | NULL, show_interrupt_sequence, | |
13988 | &remote_set_cmdlist, | |
13989 | &remote_show_cmdlist); | |
13990 | ||
13991 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13992 | &interrupt_on_connect, _("\ | |
13993 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13994 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13995 | If set, interrupt sequence is sent to remote target."), | |
13996 | NULL, NULL, | |
13997 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 13998 | |
23860348 | 13999 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14000 | |
1a966eab AC |
14001 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14002 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14003 | &setlist); |
1a966eab AC |
14004 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14005 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14006 | &showlist); |
14007 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14008 | set_memory_write_packet_size, _("\ |
14009 | Set the maximum number of bytes per memory-write packet.\n\ | |
14010 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14011 | default packet size. The actual limit is further reduced\n\ | |
14012 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14013 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14014 | &remote_set_cmdlist); |
14015 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14016 | set_memory_read_packet_size, _("\ |
14017 | Set the maximum number of bytes per memory-read packet.\n\ | |
14018 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14019 | default packet size. The actual limit is further reduced\n\ | |
14020 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14021 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14022 | &remote_set_cmdlist); |
14023 | add_cmd ("memory-write-packet-size", no_class, | |
14024 | show_memory_write_packet_size, | |
1a966eab | 14025 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14026 | &remote_show_cmdlist); |
14027 | add_cmd ("memory-read-packet-size", no_class, | |
14028 | show_memory_read_packet_size, | |
1a966eab | 14029 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14030 | &remote_show_cmdlist); |
c906108c | 14031 | |
b3f42336 | 14032 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14033 | &remote_hw_watchpoint_limit, _("\ |
14034 | Set the maximum number of target hardware watchpoints."), _("\ | |
14035 | Show the maximum number of target hardware watchpoints."), _("\ | |
14036 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14037 | NULL, NULL, /* FIXME: i18n: The maximum |
14038 | number of target hardware | |
14039 | watchpoints is %s. */ | |
b3f42336 | 14040 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14041 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14042 | &remote_hw_watchpoint_length_limit, _("\ | |
14043 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14044 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14045 | Specify a negative limit for unlimited."), | |
14046 | NULL, NULL, /* FIXME: i18n: The maximum | |
14047 | length (in bytes) of a target | |
14048 | hardware watchpoint is %s. */ | |
14049 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14050 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14051 | &remote_hw_breakpoint_limit, _("\ |
14052 | Set the maximum number of target hardware breakpoints."), _("\ | |
14053 | Show the maximum number of target hardware breakpoints."), _("\ | |
14054 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14055 | NULL, NULL, /* FIXME: i18n: The maximum |
14056 | number of target hardware | |
14057 | breakpoints is %s. */ | |
b3f42336 | 14058 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14059 | |
1b493192 PA |
14060 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14061 | &remote_address_size, _("\ | |
4d28ad1e AC |
14062 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14063 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14064 | NULL, |
14065 | NULL, /* FIXME: i18n: */ | |
14066 | &setlist, &showlist); | |
c906108c | 14067 | |
ca4f7f8b PA |
14068 | init_all_packet_configs (); |
14069 | ||
444abaca | 14070 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14071 | "X", "binary-download", 1); |
0f71a2f6 | 14072 | |
444abaca | 14073 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14074 | "vCont", "verbose-resume", 0); |
506fb367 | 14075 | |
89be2091 DJ |
14076 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14077 | "QPassSignals", "pass-signals", 0); | |
14078 | ||
82075af2 JS |
14079 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14080 | "QCatchSyscalls", "catch-syscalls", 0); | |
14081 | ||
9b224c5e PA |
14082 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14083 | "QProgramSignals", "program-signals", 0); | |
14084 | ||
bc3b087d SDJ |
14085 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14086 | "QSetWorkingDir", "set-working-dir", 0); | |
14087 | ||
aefd8b33 SDJ |
14088 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14089 | "QStartupWithShell", "startup-with-shell", 0); | |
14090 | ||
0a2dde4a SDJ |
14091 | add_packet_config_cmd (&remote_protocol_packets |
14092 | [PACKET_QEnvironmentHexEncoded], | |
14093 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14094 | 0); | |
14095 | ||
14096 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14097 | "QEnvironmentReset", "environment-reset", | |
14098 | 0); | |
14099 | ||
14100 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14101 | "QEnvironmentUnset", "environment-unset", | |
14102 | 0); | |
14103 | ||
444abaca | 14104 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14105 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14106 | |
444abaca | 14107 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14108 | "P", "set-register", 1); |
d471ea57 | 14109 | |
444abaca | 14110 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14111 | "p", "fetch-register", 1); |
b96ec7ac | 14112 | |
444abaca | 14113 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14114 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14115 | |
444abaca | 14116 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14117 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14118 | |
444abaca | 14119 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14120 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14121 | |
444abaca | 14122 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14123 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14124 | |
444abaca | 14125 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14126 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14127 | |
0876f84a DJ |
14128 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14129 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14130 | |
c78fa86a GB |
14131 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14132 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14133 | ||
23181151 DJ |
14134 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14135 | "qXfer:features:read", "target-features", 0); | |
14136 | ||
cfa9d6d9 DJ |
14137 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14138 | "qXfer:libraries:read", "library-info", 0); | |
14139 | ||
2268b414 JK |
14140 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14141 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14142 | ||
fd79ecee DJ |
14143 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14144 | "qXfer:memory-map:read", "memory-map", 0); | |
14145 | ||
0e7f50da UW |
14146 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14147 | "qXfer:spu:read", "read-spu-object", 0); | |
14148 | ||
14149 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14150 | "qXfer:spu:write", "write-spu-object", 0); | |
14151 | ||
07e059b5 VP |
14152 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14153 | "qXfer:osdata:read", "osdata", 0); | |
14154 | ||
dc146f7c VP |
14155 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14156 | "qXfer:threads:read", "threads", 0); | |
14157 | ||
4aa995e1 PA |
14158 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14159 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14160 | ||
14161 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14162 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14163 | ||
b3b9301e PA |
14164 | add_packet_config_cmd |
14165 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14166 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14167 | |
169081d0 TG |
14168 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14169 | "qXfer:uib:read", "unwind-info-block", 0); | |
14170 | ||
444abaca | 14171 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14172 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14173 | 0); |
14174 | ||
711e434b PM |
14175 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14176 | "qGetTIBAddr", "get-thread-information-block-address", | |
14177 | 0); | |
14178 | ||
40ab02ce MS |
14179 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14180 | "bc", "reverse-continue", 0); | |
14181 | ||
14182 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14183 | "bs", "reverse-step", 0); | |
14184 | ||
be2a5f71 DJ |
14185 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14186 | "qSupported", "supported-packets", 0); | |
14187 | ||
08388c79 DE |
14188 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14189 | "qSearch:memory", "search-memory", 0); | |
14190 | ||
bd3eecc3 PA |
14191 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14192 | "qTStatus", "trace-status", 0); | |
14193 | ||
15a201c8 GB |
14194 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14195 | "vFile:setfs", "hostio-setfs", 0); | |
14196 | ||
a6b151f1 DJ |
14197 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14198 | "vFile:open", "hostio-open", 0); | |
14199 | ||
14200 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14201 | "vFile:pread", "hostio-pread", 0); | |
14202 | ||
14203 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14204 | "vFile:pwrite", "hostio-pwrite", 0); | |
14205 | ||
14206 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14207 | "vFile:close", "hostio-close", 0); | |
14208 | ||
14209 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14210 | "vFile:unlink", "hostio-unlink", 0); | |
14211 | ||
b9e7b9c3 UW |
14212 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14213 | "vFile:readlink", "hostio-readlink", 0); | |
14214 | ||
0a93529c GB |
14215 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14216 | "vFile:fstat", "hostio-fstat", 0); | |
14217 | ||
2d717e4f DJ |
14218 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14219 | "vAttach", "attach", 0); | |
14220 | ||
14221 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14222 | "vRun", "run", 0); | |
14223 | ||
a6f3e723 SL |
14224 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14225 | "QStartNoAckMode", "noack", 0); | |
14226 | ||
82f73884 PA |
14227 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14228 | "vKill", "kill", 0); | |
14229 | ||
0b16c5cf PA |
14230 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14231 | "qAttached", "query-attached", 0); | |
14232 | ||
782b2b07 | 14233 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14234 | "ConditionalTracepoints", |
14235 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14236 | |
14237 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14238 | "ConditionalBreakpoints", | |
14239 | "conditional-breakpoints", 0); | |
14240 | ||
d3ce09f5 SS |
14241 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14242 | "BreakpointCommands", | |
14243 | "breakpoint-commands", 0); | |
14244 | ||
7a697b8d SS |
14245 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14246 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14247 | |
409873ef SS |
14248 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14249 | "TracepointSource", "TracepointSource", 0); | |
14250 | ||
d914c394 SS |
14251 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14252 | "QAllow", "allow", 0); | |
14253 | ||
0fb4aa4b PA |
14254 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14255 | "StaticTracepoints", "static-tracepoints", 0); | |
14256 | ||
1e4d1764 YQ |
14257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14258 | "InstallInTrace", "install-in-trace", 0); | |
14259 | ||
0fb4aa4b PA |
14260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14261 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14262 | ||
78d85199 YQ |
14263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14264 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14265 | ||
03583c20 UW |
14266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14267 | "QDisableRandomization", "disable-randomization", 0); | |
14268 | ||
d1feda86 YQ |
14269 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14270 | "QAgent", "agent", 0); | |
14271 | ||
f6f899bf HAQ |
14272 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14273 | "QTBuffer:size", "trace-buffer-size", 0); | |
14274 | ||
9accd112 MM |
14275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14276 | "Qbtrace:off", "disable-btrace", 0); | |
14277 | ||
14278 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14279 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14280 | ||
14281 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14282 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14283 | |
14284 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14285 | "qXfer:btrace", "read-btrace", 0); | |
14286 | ||
f4abbc16 MM |
14287 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14288 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14289 | ||
d33501a5 MM |
14290 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14291 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14292 | ||
73b8c1fd PA |
14293 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14294 | "multiprocess-feature", "multiprocess-feature", 0); | |
14295 | ||
f7e6eed5 PA |
14296 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14297 | "swbreak-feature", "swbreak-feature", 0); | |
14298 | ||
14299 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14300 | "hwbreak-feature", "hwbreak-feature", 0); | |
14301 | ||
89245bc0 DB |
14302 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14303 | "fork-event-feature", "fork-event-feature", 0); | |
14304 | ||
14305 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14306 | "vfork-event-feature", "vfork-event-feature", 0); | |
14307 | ||
b20a6524 MM |
14308 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14309 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14310 | ||
750ce8d1 YQ |
14311 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14312 | "vContSupported", "verbose-resume-supported", 0); | |
14313 | ||
94585166 DB |
14314 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14315 | "exec-event-feature", "exec-event-feature", 0); | |
14316 | ||
de979965 PA |
14317 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14318 | "vCtrlC", "ctrl-c", 0); | |
14319 | ||
65706a29 PA |
14320 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14321 | "QThreadEvents", "thread-events", 0); | |
14322 | ||
f2faf941 PA |
14323 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14324 | "N stop reply", "no-resumed-stop-reply", 0); | |
14325 | ||
0b736949 DB |
14326 | /* Assert that we've registered "set remote foo-packet" commands |
14327 | for all packet configs. */ | |
ca4f7f8b PA |
14328 | { |
14329 | int i; | |
14330 | ||
14331 | for (i = 0; i < PACKET_MAX; i++) | |
14332 | { | |
14333 | /* Ideally all configs would have a command associated. Some | |
14334 | still don't though. */ | |
14335 | int excepted; | |
14336 | ||
14337 | switch (i) | |
14338 | { | |
14339 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14340 | case PACKET_EnableDisableTracepoints_feature: |
14341 | case PACKET_tracenz_feature: | |
14342 | case PACKET_DisconnectedTracing_feature: | |
14343 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14344 | case PACKET_qCRC: |
14345 | /* Additions to this list need to be well justified: | |
14346 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14347 | excepted = 1; |
14348 | break; | |
14349 | default: | |
14350 | excepted = 0; | |
14351 | break; | |
14352 | } | |
14353 | ||
14354 | /* This catches both forgetting to add a config command, and | |
14355 | forgetting to remove a packet from the exception list. */ | |
14356 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14357 | } | |
14358 | } | |
14359 | ||
37a105a1 DJ |
14360 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14361 | Z sub-packet has its own set and show commands, but users may | |
14362 | have sets to this variable in their .gdbinit files (or in their | |
14363 | documentation). */ | |
e9e68a56 | 14364 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14365 | &remote_Z_packet_detect, _("\ |
14366 | Set use of remote protocol `Z' packets"), _("\ | |
14367 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14368 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14369 | packets."), |
e9e68a56 | 14370 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14371 | show_remote_protocol_Z_packet_cmd, |
14372 | /* FIXME: i18n: Use of remote protocol | |
14373 | `Z' packets is %s. */ | |
e9e68a56 | 14374 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14375 | |
a6b151f1 DJ |
14376 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14377 | Manipulate files on the remote system\n\ | |
14378 | Transfer files to and from the remote target system."), | |
14379 | &remote_cmdlist, "remote ", | |
14380 | 0 /* allow-unknown */, &cmdlist); | |
14381 | ||
14382 | add_cmd ("put", class_files, remote_put_command, | |
14383 | _("Copy a local file to the remote system."), | |
14384 | &remote_cmdlist); | |
14385 | ||
14386 | add_cmd ("get", class_files, remote_get_command, | |
14387 | _("Copy a remote file to the local system."), | |
14388 | &remote_cmdlist); | |
14389 | ||
14390 | add_cmd ("delete", class_files, remote_delete_command, | |
14391 | _("Delete a remote file."), | |
14392 | &remote_cmdlist); | |
14393 | ||
2d717e4f | 14394 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14395 | &remote_exec_file_var, _("\ |
2d717e4f | 14396 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14397 | Show the remote pathname for \"run\""), NULL, |
14398 | set_remote_exec_file, | |
14399 | show_remote_exec_file, | |
14400 | &remote_set_cmdlist, | |
14401 | &remote_show_cmdlist); | |
2d717e4f | 14402 | |
c1e36e3e PA |
14403 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14404 | &use_range_stepping, _("\ | |
14405 | Enable or disable range stepping."), _("\ | |
14406 | Show whether target-assisted range stepping is enabled."), _("\ | |
14407 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14408 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14409 | of issuing multiple single-steps. This speeds up source level\n\ | |
14410 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14411 | stepping is supported by the target. The default is on."), | |
14412 | set_range_stepping, | |
14413 | show_range_stepping, | |
14414 | &setlist, | |
14415 | &showlist); | |
14416 | ||
449092f6 CV |
14417 | /* Eventually initialize fileio. See fileio.c */ |
14418 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14419 | |
ba348170 | 14420 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14421 | special ptids with it set to != 0. */ |
ba348170 PA |
14422 | magic_null_ptid = ptid_build (42000, -1, 1); |
14423 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14424 | any_thread_ptid = ptid_build (42000, 0, 1); | |
c906108c | 14425 | } |