Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1988-2017 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 | ||
dc146f7c VP |
442 | /* Private data that we'll store in (struct thread_info)->private. */ |
443 | struct private_thread_info | |
444 | { | |
445 | char *extra; | |
79efa585 | 446 | char *name; |
dc146f7c | 447 | int core; |
799a2abe | 448 | |
f6327dcb KB |
449 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
450 | sequence of bytes. */ | |
451 | gdb::byte_vector *thread_handle; | |
452 | ||
799a2abe PA |
453 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
454 | enum target_stop_reason stop_reason; | |
455 | ||
456 | /* This is set to the data address of the access causing the target | |
457 | to stop for a watchpoint. */ | |
458 | CORE_ADDR watch_data_address; | |
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. */ | |
468 | int last_resume_step; | |
469 | ||
470 | /* The signal specified in the last target_resume call for this | |
471 | thread. */ | |
472 | enum gdb_signal last_resume_sig; | |
473 | ||
474 | /* Whether this thread was already vCont-resumed on the remote | |
475 | side. */ | |
476 | int vcont_resumed; | |
dc146f7c VP |
477 | }; |
478 | ||
479 | static void | |
480 | free_private_thread_info (struct private_thread_info *info) | |
481 | { | |
482 | xfree (info->extra); | |
79efa585 | 483 | xfree (info->name); |
f6327dcb | 484 | delete info->thread_handle; |
dc146f7c VP |
485 | xfree (info); |
486 | } | |
487 | ||
ea9c271d DJ |
488 | /* This data could be associated with a target, but we do not always |
489 | have access to the current target when we need it, so for now it is | |
490 | static. This will be fine for as long as only one target is in use | |
491 | at a time. */ | |
cf792862 | 492 | static struct remote_state *remote_state; |
ea9c271d DJ |
493 | |
494 | static struct remote_state * | |
0b83947e | 495 | get_remote_state_raw (void) |
ea9c271d | 496 | { |
cf792862 TT |
497 | return remote_state; |
498 | } | |
499 | ||
500 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
501 | return it. */ | |
502 | ||
503 | static struct remote_state * | |
504 | new_remote_state (void) | |
505 | { | |
506 | struct remote_state *result = XCNEW (struct remote_state); | |
507 | ||
508 | /* The default buffer size is unimportant; it will be expanded | |
509 | whenever a larger buffer is needed. */ | |
510 | result->buf_size = 400; | |
224c3ddb | 511 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 512 | result->remote_traceframe_number = -1; |
b73be471 | 513 | result->last_sent_signal = GDB_SIGNAL_0; |
3a00c802 | 514 | result->last_resume_exec_dir = EXEC_FORWARD; |
15a201c8 | 515 | result->fs_pid = -1; |
cf792862 TT |
516 | |
517 | return result; | |
ea9c271d DJ |
518 | } |
519 | ||
520 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 521 | |
ad10f812 AC |
522 | struct packet_reg |
523 | { | |
524 | long offset; /* Offset into G packet. */ | |
525 | long regnum; /* GDB's internal register number. */ | |
526 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 527 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 528 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 529 | at present. */ |
f5656ead | 530 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 531 | at present. */ |
ad10f812 AC |
532 | }; |
533 | ||
ea9c271d | 534 | struct remote_arch_state |
d01949b6 | 535 | { |
ad10f812 AC |
536 | /* Description of the remote protocol registers. */ |
537 | long sizeof_g_packet; | |
b323314b AC |
538 | |
539 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 540 | (making an array gdbarch_num_regs in size). */ |
b323314b | 541 | struct packet_reg *regs; |
ad10f812 | 542 | |
d01949b6 AC |
543 | /* This is the size (in chars) of the first response to the ``g'' |
544 | packet. It is used as a heuristic when determining the maximum | |
545 | size of memory-read and memory-write packets. A target will | |
546 | typically only reserve a buffer large enough to hold the ``g'' | |
547 | packet. The size does not include packet overhead (headers and | |
23860348 | 548 | trailers). */ |
d01949b6 AC |
549 | long actual_register_packet_size; |
550 | ||
551 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 552 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
553 | long remote_packet_size; |
554 | }; | |
555 | ||
35b1e5cc SS |
556 | /* Utility: generate error from an incoming stub packet. */ |
557 | static void | |
558 | trace_error (char *buf) | |
559 | { | |
560 | if (*buf++ != 'E') | |
561 | return; /* not an error msg */ | |
562 | switch (*buf) | |
563 | { | |
564 | case '1': /* malformed packet error */ | |
565 | if (*++buf == '0') /* general case: */ | |
566 | error (_("remote.c: error in outgoing packet.")); | |
567 | else | |
568 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
569 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
570 | default: |
571 | error (_("Target returns error code '%s'."), buf); | |
572 | } | |
573 | } | |
574 | ||
575 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 576 | |
35b1e5cc | 577 | static char * |
b6bb3468 | 578 | remote_get_noisy_reply () |
35b1e5cc | 579 | { |
b6bb3468 PA |
580 | struct remote_state *rs = get_remote_state (); |
581 | ||
35b1e5cc SS |
582 | do /* Loop on reply from remote stub. */ |
583 | { | |
584 | char *buf; | |
a744cf53 | 585 | |
0df8b418 | 586 | QUIT; /* Allow user to bail out with ^C. */ |
b6bb3468 PA |
587 | getpkt (&rs->buf, &rs->buf_size, 0); |
588 | buf = rs->buf; | |
ad91cd99 | 589 | if (buf[0] == 'E') |
35b1e5cc | 590 | trace_error (buf); |
61012eef | 591 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
592 | { |
593 | ULONGEST ul; | |
594 | CORE_ADDR from, to, org_to; | |
256642e8 | 595 | const char *p, *pp; |
dde08ee1 | 596 | int adjusted_size = 0; |
7556d4a4 | 597 | int relocated = 0; |
dde08ee1 PA |
598 | |
599 | p = buf + strlen ("qRelocInsn:"); | |
600 | pp = unpack_varlen_hex (p, &ul); | |
601 | if (*pp != ';') | |
cb91c06a | 602 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
603 | from = ul; |
604 | ||
605 | p = pp + 1; | |
a9cbf802 | 606 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
607 | to = ul; |
608 | ||
609 | org_to = to; | |
610 | ||
492d29ea | 611 | TRY |
dde08ee1 | 612 | { |
f5656ead | 613 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 614 | relocated = 1; |
dde08ee1 | 615 | } |
492d29ea | 616 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
617 | { |
618 | if (ex.error == MEMORY_ERROR) | |
619 | { | |
620 | /* Propagate memory errors silently back to the | |
621 | target. The stub may have limited the range of | |
622 | addresses we can write to, for example. */ | |
623 | } | |
624 | else | |
625 | { | |
626 | /* Something unexpectedly bad happened. Be verbose | |
627 | so we can tell what, and propagate the error back | |
628 | to the stub, so it doesn't get stuck waiting for | |
629 | a response. */ | |
630 | exception_fprintf (gdb_stderr, ex, | |
631 | _("warning: relocating instruction: ")); | |
632 | } | |
633 | putpkt ("E01"); | |
634 | } | |
492d29ea | 635 | END_CATCH |
7556d4a4 PA |
636 | |
637 | if (relocated) | |
dde08ee1 PA |
638 | { |
639 | adjusted_size = to - org_to; | |
640 | ||
b6bb3468 | 641 | xsnprintf (buf, rs->buf_size, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
642 | putpkt (buf); |
643 | } | |
dde08ee1 | 644 | } |
ad91cd99 | 645 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
646 | remote_console_output (buf + 1); /* 'O' message from stub */ |
647 | else | |
0df8b418 | 648 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
649 | } |
650 | while (1); | |
651 | } | |
3c3bea1c | 652 | |
d01949b6 AC |
653 | /* Handle for retreving the remote protocol data from gdbarch. */ |
654 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
655 | ||
ea9c271d | 656 | static struct remote_arch_state * |
5cd63fda | 657 | get_remote_arch_state (struct gdbarch *gdbarch) |
d01949b6 | 658 | { |
5cd63fda | 659 | gdb_assert (gdbarch != NULL); |
19ba03f4 | 660 | return ((struct remote_arch_state *) |
5cd63fda | 661 | gdbarch_data (gdbarch, remote_gdbarch_data_handle)); |
d01949b6 AC |
662 | } |
663 | ||
0b83947e DJ |
664 | /* Fetch the global remote target state. */ |
665 | ||
666 | static struct remote_state * | |
667 | get_remote_state (void) | |
668 | { | |
669 | /* Make sure that the remote architecture state has been | |
670 | initialized, because doing so might reallocate rs->buf. Any | |
671 | function which calls getpkt also needs to be mindful of changes | |
672 | to rs->buf, but this call limits the number of places which run | |
673 | into trouble. */ | |
5cd63fda | 674 | get_remote_arch_state (target_gdbarch ()); |
0b83947e DJ |
675 | |
676 | return get_remote_state_raw (); | |
677 | } | |
678 | ||
94585166 DB |
679 | /* Cleanup routine for the remote module's pspace data. */ |
680 | ||
681 | static void | |
682 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
683 | { | |
19ba03f4 | 684 | char *remote_exec_file = (char *) arg; |
94585166 DB |
685 | |
686 | xfree (remote_exec_file); | |
687 | } | |
688 | ||
689 | /* Fetch the remote exec-file from the current program space. */ | |
690 | ||
691 | static const char * | |
692 | get_remote_exec_file (void) | |
693 | { | |
694 | char *remote_exec_file; | |
695 | ||
19ba03f4 SM |
696 | remote_exec_file |
697 | = (char *) program_space_data (current_program_space, | |
698 | remote_pspace_data); | |
94585166 DB |
699 | if (remote_exec_file == NULL) |
700 | return ""; | |
701 | ||
702 | return remote_exec_file; | |
703 | } | |
704 | ||
705 | /* Set the remote exec file for PSPACE. */ | |
706 | ||
707 | static void | |
708 | set_pspace_remote_exec_file (struct program_space *pspace, | |
709 | char *remote_exec_file) | |
710 | { | |
19ba03f4 | 711 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
712 | |
713 | xfree (old_file); | |
714 | set_program_space_data (pspace, remote_pspace_data, | |
715 | xstrdup (remote_exec_file)); | |
716 | } | |
717 | ||
718 | /* The "set/show remote exec-file" set command hook. */ | |
719 | ||
720 | static void | |
721 | set_remote_exec_file (char *ignored, int from_tty, | |
722 | struct cmd_list_element *c) | |
723 | { | |
724 | gdb_assert (remote_exec_file_var != NULL); | |
725 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
726 | } | |
727 | ||
728 | /* The "set/show remote exec-file" show command hook. */ | |
729 | ||
730 | static void | |
731 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
732 | struct cmd_list_element *cmd, const char *value) | |
733 | { | |
734 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
735 | } | |
736 | ||
74ca34ce DJ |
737 | static int |
738 | compare_pnums (const void *lhs_, const void *rhs_) | |
739 | { | |
19ba03f4 SM |
740 | const struct packet_reg * const *lhs |
741 | = (const struct packet_reg * const *) lhs_; | |
742 | const struct packet_reg * const *rhs | |
743 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
744 | |
745 | if ((*lhs)->pnum < (*rhs)->pnum) | |
746 | return -1; | |
747 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
748 | return 0; | |
749 | else | |
750 | return 1; | |
751 | } | |
752 | ||
c21236dc PA |
753 | static int |
754 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 755 | { |
74ca34ce | 756 | int regnum, num_remote_regs, offset; |
74ca34ce | 757 | struct packet_reg **remote_regs; |
ea9c271d | 758 | |
4a22f64d | 759 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 760 | { |
c21236dc | 761 | struct packet_reg *r = ®s[regnum]; |
baef701f | 762 | |
4a22f64d | 763 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
764 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
765 | r->pnum = -1; | |
766 | else | |
767 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
768 | ||
b323314b | 769 | r->regnum = regnum; |
74ca34ce DJ |
770 | } |
771 | ||
772 | /* Define the g/G packet format as the contents of each register | |
773 | with a remote protocol number, in order of ascending protocol | |
774 | number. */ | |
775 | ||
224c3ddb | 776 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 777 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 778 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 779 | regnum++) |
c21236dc PA |
780 | if (regs[regnum].pnum != -1) |
781 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 782 | |
74ca34ce DJ |
783 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
784 | compare_pnums); | |
785 | ||
786 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
787 | { | |
788 | remote_regs[regnum]->in_g_packet = 1; | |
789 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 790 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
791 | } |
792 | ||
c21236dc PA |
793 | return offset; |
794 | } | |
795 | ||
796 | /* Given the architecture described by GDBARCH, return the remote | |
797 | protocol register's number and the register's offset in the g/G | |
798 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
799 | If the target does not have a mapping for REGNUM, return false, | |
800 | otherwise, return true. */ | |
801 | ||
802 | int | |
803 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
804 | int *pnum, int *poffset) | |
805 | { | |
c21236dc PA |
806 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
807 | ||
b80406ac | 808 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 809 | |
b80406ac | 810 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
811 | |
812 | *pnum = regs[regnum].pnum; | |
813 | *poffset = regs[regnum].offset; | |
814 | ||
c21236dc PA |
815 | return *pnum != -1; |
816 | } | |
817 | ||
818 | static void * | |
819 | init_remote_state (struct gdbarch *gdbarch) | |
820 | { | |
821 | struct remote_state *rs = get_remote_state_raw (); | |
822 | struct remote_arch_state *rsa; | |
823 | ||
824 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
825 | ||
826 | /* Use the architecture to build a regnum<->pnum table, which will be | |
827 | 1:1 unless a feature set specifies otherwise. */ | |
828 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
829 | gdbarch_num_regs (gdbarch), | |
830 | struct packet_reg); | |
831 | ||
74ca34ce DJ |
832 | /* Record the maximum possible size of the g packet - it may turn out |
833 | to be smaller. */ | |
c21236dc | 834 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 835 | |
0df8b418 | 836 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
837 | remote stubs have a hardwired buffer size of 400 bytes |
838 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
839 | as the maximum packet-size to ensure that the packet and an extra | |
840 | NUL character can always fit in the buffer. This stops GDB | |
841 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
842 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
843 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 844 | |
ea9c271d DJ |
845 | /* This one is filled in when a ``g'' packet is received. */ |
846 | rsa->actual_register_packet_size = 0; | |
847 | ||
848 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
849 | default, adjust the size accordingly. Remember that each byte is |
850 | encoded as two characters. 32 is the overhead for the packet | |
851 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 852 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 853 | little. */ |
ea9c271d DJ |
854 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
855 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 856 | |
ea9c271d DJ |
857 | /* Make sure that the packet buffer is plenty big enough for |
858 | this architecture. */ | |
859 | if (rs->buf_size < rsa->remote_packet_size) | |
860 | { | |
861 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 862 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 863 | } |
6d820c5c | 864 | |
ea9c271d DJ |
865 | return rsa; |
866 | } | |
867 | ||
868 | /* Return the current allowed size of a remote packet. This is | |
869 | inferred from the current architecture, and should be used to | |
870 | limit the length of outgoing packets. */ | |
871 | static long | |
872 | get_remote_packet_size (void) | |
873 | { | |
be2a5f71 | 874 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 875 | remote_arch_state *rsa = get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 876 | |
be2a5f71 DJ |
877 | if (rs->explicit_packet_size) |
878 | return rs->explicit_packet_size; | |
879 | ||
ea9c271d | 880 | return rsa->remote_packet_size; |
d01949b6 AC |
881 | } |
882 | ||
ad10f812 | 883 | static struct packet_reg * |
5cd63fda PA |
884 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
885 | long regnum) | |
ad10f812 | 886 | { |
5cd63fda | 887 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
888 | return NULL; |
889 | else | |
ad10f812 | 890 | { |
ea9c271d | 891 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 892 | |
b323314b AC |
893 | gdb_assert (r->regnum == regnum); |
894 | return r; | |
ad10f812 | 895 | } |
ad10f812 AC |
896 | } |
897 | ||
898 | static struct packet_reg * | |
5cd63fda PA |
899 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
900 | LONGEST pnum) | |
ad10f812 | 901 | { |
b323314b | 902 | int i; |
a744cf53 | 903 | |
5cd63fda | 904 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 905 | { |
ea9c271d | 906 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 907 | |
b323314b AC |
908 | if (r->pnum == pnum) |
909 | return r; | |
ad10f812 AC |
910 | } |
911 | return NULL; | |
d01949b6 AC |
912 | } |
913 | ||
c906108c SS |
914 | static struct target_ops remote_ops; |
915 | ||
916 | static struct target_ops extended_remote_ops; | |
917 | ||
6426a772 JM |
918 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
919 | ``forever'' still use the normal timeout mechanism. This is | |
920 | currently used by the ASYNC code to guarentee that target reads | |
921 | during the initial connect always time-out. Once getpkt has been | |
922 | modified to return a timeout indication and, in turn | |
923 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 924 | this can go away. */ |
6426a772 JM |
925 | static int wait_forever_enabled_p = 1; |
926 | ||
9a7071a8 JB |
927 | /* Allow the user to specify what sequence to send to the remote |
928 | when he requests a program interruption: Although ^C is usually | |
929 | what remote systems expect (this is the default, here), it is | |
930 | sometimes preferable to send a break. On other systems such | |
931 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
932 | is required in order to interrupt the execution. */ | |
933 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
934 | const char interrupt_sequence_break[] = "BREAK"; | |
935 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 936 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
937 | { |
938 | interrupt_sequence_control_c, | |
939 | interrupt_sequence_break, | |
940 | interrupt_sequence_break_g, | |
941 | NULL | |
942 | }; | |
943 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
944 | ||
945 | static void | |
946 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
947 | struct cmd_list_element *c, | |
948 | const char *value) | |
949 | { | |
950 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
951 | fprintf_filtered (file, | |
952 | _("Send the ASCII ETX character (Ctrl-c) " | |
953 | "to the remote target to interrupt the " | |
954 | "execution of the program.\n")); | |
955 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
956 | fprintf_filtered (file, | |
957 | _("send a break signal to the remote target " | |
958 | "to interrupt the execution of the program.\n")); | |
959 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
960 | fprintf_filtered (file, | |
961 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
962 | "the remote target to interrupt the execution " | |
963 | "of Linux kernel.\n")); | |
964 | else | |
965 | internal_error (__FILE__, __LINE__, | |
966 | _("Invalid value for interrupt_sequence_mode: %s."), | |
967 | interrupt_sequence_mode); | |
968 | } | |
6426a772 | 969 | |
9a7071a8 JB |
970 | /* This boolean variable specifies whether interrupt_sequence is sent |
971 | to the remote target when gdb connects to it. | |
972 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
973 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
974 | static int interrupt_on_connect = 0; | |
c906108c | 975 | |
9a7071a8 JB |
976 | /* This variable is used to implement the "set/show remotebreak" commands. |
977 | Since these commands are now deprecated in favor of "set/show remote | |
978 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
979 | static int remote_break; |
980 | ||
9a7071a8 JB |
981 | static void |
982 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
983 | { | |
984 | if (remote_break) | |
985 | interrupt_sequence_mode = interrupt_sequence_break; | |
986 | else | |
987 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
988 | } | |
989 | ||
990 | static void | |
991 | show_remotebreak (struct ui_file *file, int from_tty, | |
992 | struct cmd_list_element *c, | |
993 | const char *value) | |
994 | { | |
995 | } | |
996 | ||
c906108c SS |
997 | /* This variable sets the number of bits in an address that are to be |
998 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 999 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1000 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1001 | initial implementation of remote.c restricted the address sent in | |
1002 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1003 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1004 | address was never sent. Since fixing this bug may cause a break in | |
1005 | some remote targets this variable is principly provided to | |
23860348 | 1006 | facilitate backward compatibility. */ |
c906108c | 1007 | |
883b9c6c | 1008 | static unsigned int remote_address_size; |
c906108c | 1009 | |
75c99385 PA |
1010 | /* Temporary to track who currently owns the terminal. See |
1011 | remote_terminal_* for more details. */ | |
6426a772 JM |
1012 | |
1013 | static int remote_async_terminal_ours_p; | |
1014 | ||
11cf8741 | 1015 | \f |
11cf8741 | 1016 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1017 | memory read/write packet. MIN (rsa->remote_packet_size, |
1018 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1019 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1020 | (speed up transfers). The variables ``preferred_*'' (the user |
1021 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1022 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1023 | |
1024 | struct memory_packet_config | |
1025 | { | |
a121b7c1 | 1026 | const char *name; |
11cf8741 JM |
1027 | long size; |
1028 | int fixed_p; | |
1029 | }; | |
1030 | ||
a5c0808e PA |
1031 | /* The default max memory-write-packet-size. The 16k is historical. |
1032 | (It came from older GDB's using alloca for buffers and the | |
1033 | knowledge (folklore?) that some hosts don't cope very well with | |
1034 | large alloca calls.) */ | |
1035 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1036 | ||
1037 | /* The minimum remote packet size for memory transfers. Ensures we | |
1038 | can write at least one byte. */ | |
1039 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1040 | ||
11cf8741 JM |
1041 | /* Compute the current size of a read/write packet. Since this makes |
1042 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1043 | ||
1044 | static long | |
1045 | get_memory_packet_size (struct memory_packet_config *config) | |
1046 | { | |
d01949b6 | 1047 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 1048 | remote_arch_state *rsa = get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1049 | |
11cf8741 JM |
1050 | long what_they_get; |
1051 | if (config->fixed_p) | |
1052 | { | |
1053 | if (config->size <= 0) | |
a5c0808e | 1054 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1055 | else |
1056 | what_they_get = config->size; | |
1057 | } | |
1058 | else | |
1059 | { | |
ea9c271d | 1060 | what_they_get = get_remote_packet_size (); |
23860348 | 1061 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1062 | if (config->size > 0 |
1063 | && what_they_get > config->size) | |
1064 | what_they_get = config->size; | |
be2a5f71 DJ |
1065 | |
1066 | /* Limit it to the size of the targets ``g'' response unless we have | |
1067 | permission from the stub to use a larger packet size. */ | |
1068 | if (rs->explicit_packet_size == 0 | |
1069 | && rsa->actual_register_packet_size > 0 | |
1070 | && what_they_get > rsa->actual_register_packet_size) | |
1071 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1072 | } |
a5c0808e PA |
1073 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1074 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1075 | |
1076 | /* Make sure there is room in the global buffer for this packet | |
1077 | (including its trailing NUL byte). */ | |
1078 | if (rs->buf_size < what_they_get + 1) | |
1079 | { | |
1080 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1081 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1082 | } |
1083 | ||
11cf8741 JM |
1084 | return what_they_get; |
1085 | } | |
1086 | ||
0df8b418 | 1087 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1088 | something really big then do a sanity check. */ |
11cf8741 JM |
1089 | |
1090 | static void | |
ac88e2de | 1091 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1092 | { |
1093 | int fixed_p = config->fixed_p; | |
1094 | long size = config->size; | |
a744cf53 | 1095 | |
11cf8741 | 1096 | if (args == NULL) |
8a3fe4f8 | 1097 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1098 | else if (strcmp (args, "hard") == 0 |
1099 | || strcmp (args, "fixed") == 0) | |
1100 | fixed_p = 1; | |
1101 | else if (strcmp (args, "soft") == 0 | |
1102 | || strcmp (args, "limit") == 0) | |
1103 | fixed_p = 0; | |
1104 | else | |
1105 | { | |
1106 | char *end; | |
a744cf53 | 1107 | |
11cf8741 JM |
1108 | size = strtoul (args, &end, 0); |
1109 | if (args == end) | |
8a3fe4f8 | 1110 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1111 | |
1112 | /* Instead of explicitly capping the size of a packet to or | |
1113 | disallowing it, the user is allowed to set the size to | |
1114 | something arbitrarily large. */ | |
11cf8741 | 1115 | } |
a5c0808e PA |
1116 | |
1117 | /* So that the query shows the correct value. */ | |
1118 | if (size <= 0) | |
1119 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1120 | ||
23860348 | 1121 | /* Extra checks? */ |
11cf8741 JM |
1122 | if (fixed_p && !config->fixed_p) |
1123 | { | |
e2e0b3e5 AC |
1124 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1125 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1126 | config->name, size)) |
8a3fe4f8 | 1127 | error (_("Packet size not changed.")); |
11cf8741 | 1128 | } |
23860348 | 1129 | /* Update the config. */ |
11cf8741 JM |
1130 | config->fixed_p = fixed_p; |
1131 | config->size = size; | |
1132 | } | |
1133 | ||
1134 | static void | |
1135 | show_memory_packet_size (struct memory_packet_config *config) | |
1136 | { | |
a3f17187 | 1137 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1138 | if (config->fixed_p) |
a3f17187 | 1139 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1140 | get_memory_packet_size (config)); |
1141 | else | |
a3f17187 | 1142 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1143 | get_memory_packet_size (config)); |
1144 | } | |
1145 | ||
1146 | static struct memory_packet_config memory_write_packet_config = | |
1147 | { | |
1148 | "memory-write-packet-size", | |
1149 | }; | |
1150 | ||
1151 | static void | |
ac88e2de | 1152 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1153 | { |
1154 | set_memory_packet_size (args, &memory_write_packet_config); | |
1155 | } | |
1156 | ||
1157 | static void | |
ac88e2de | 1158 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1159 | { |
1160 | show_memory_packet_size (&memory_write_packet_config); | |
1161 | } | |
1162 | ||
1163 | static long | |
1164 | get_memory_write_packet_size (void) | |
1165 | { | |
1166 | return get_memory_packet_size (&memory_write_packet_config); | |
1167 | } | |
1168 | ||
1169 | static struct memory_packet_config memory_read_packet_config = | |
1170 | { | |
1171 | "memory-read-packet-size", | |
1172 | }; | |
1173 | ||
1174 | static void | |
ac88e2de | 1175 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1176 | { |
1177 | set_memory_packet_size (args, &memory_read_packet_config); | |
1178 | } | |
1179 | ||
1180 | static void | |
ac88e2de | 1181 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1182 | { |
1183 | show_memory_packet_size (&memory_read_packet_config); | |
1184 | } | |
1185 | ||
1186 | static long | |
1187 | get_memory_read_packet_size (void) | |
1188 | { | |
1189 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1190 | |
11cf8741 JM |
1191 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1192 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1193 | increased beyond this. */ |
1194 | if (size > get_remote_packet_size ()) | |
1195 | size = get_remote_packet_size (); | |
11cf8741 JM |
1196 | return size; |
1197 | } | |
1198 | ||
11cf8741 | 1199 | \f |
5a2468f5 | 1200 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1201 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1202 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1203 | |
1204 | enum packet_support | |
1205 | { | |
1206 | PACKET_SUPPORT_UNKNOWN = 0, | |
1207 | PACKET_ENABLE, | |
1208 | PACKET_DISABLE | |
1209 | }; | |
1210 | ||
5a2468f5 JM |
1211 | struct packet_config |
1212 | { | |
bb572ddd DJ |
1213 | const char *name; |
1214 | const char *title; | |
4082afcc PA |
1215 | |
1216 | /* If auto, GDB auto-detects support for this packet or feature, | |
1217 | either through qSupported, or by trying the packet and looking | |
1218 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1219 | packet. If false, the packet is disabled. Configs that don't |
1220 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1221 | enum auto_boolean detect; |
4082afcc PA |
1222 | |
1223 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1224 | enum packet_support support; |
1225 | }; | |
1226 | ||
d471ea57 | 1227 | /* Analyze a packet's return value and update the packet config |
23860348 | 1228 | accordingly. */ |
d471ea57 AC |
1229 | |
1230 | enum packet_result | |
1231 | { | |
1232 | PACKET_ERROR, | |
1233 | PACKET_OK, | |
1234 | PACKET_UNKNOWN | |
1235 | }; | |
1236 | ||
4082afcc PA |
1237 | static enum packet_support packet_config_support (struct packet_config *config); |
1238 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1239 | |
1240 | static void | |
fba45db2 | 1241 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1242 | { |
a121b7c1 | 1243 | const char *support = "internal-error"; |
a744cf53 | 1244 | |
4082afcc | 1245 | switch (packet_config_support (config)) |
5a2468f5 JM |
1246 | { |
1247 | case PACKET_ENABLE: | |
1248 | support = "enabled"; | |
1249 | break; | |
1250 | case PACKET_DISABLE: | |
1251 | support = "disabled"; | |
1252 | break; | |
1253 | case PACKET_SUPPORT_UNKNOWN: | |
1254 | support = "unknown"; | |
1255 | break; | |
1256 | } | |
1257 | switch (config->detect) | |
1258 | { | |
7f19b9a2 | 1259 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1260 | printf_filtered (_("Support for the `%s' packet " |
1261 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1262 | config->name, support); |
5a2468f5 | 1263 | break; |
7f19b9a2 AC |
1264 | case AUTO_BOOLEAN_TRUE: |
1265 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1266 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1267 | config->name, support); | |
8e248173 | 1268 | break; |
5a2468f5 JM |
1269 | } |
1270 | } | |
1271 | ||
1272 | static void | |
bb572ddd DJ |
1273 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1274 | const char *title, int legacy) | |
d471ea57 | 1275 | { |
5a2468f5 JM |
1276 | char *set_doc; |
1277 | char *show_doc; | |
d471ea57 | 1278 | char *cmd_name; |
3ed07be4 | 1279 | |
5a2468f5 JM |
1280 | config->name = name; |
1281 | config->title = title; | |
b435e160 AC |
1282 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1283 | name, title); | |
3e43a32a MS |
1284 | show_doc = xstrprintf ("Show current use of remote " |
1285 | "protocol `%s' (%s) packet", | |
b435e160 | 1286 | name, title); |
d471ea57 | 1287 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1288 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1289 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1290 | &config->detect, set_doc, |
1291 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1292 | NULL, |
bb572ddd DJ |
1293 | show_remote_protocol_packet_cmd, |
1294 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1295 | /* The command code copies the documentation strings. */ |
1296 | xfree (set_doc); | |
1297 | xfree (show_doc); | |
23860348 | 1298 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1299 | if (legacy) |
1300 | { | |
1301 | char *legacy_name; | |
a744cf53 | 1302 | |
b435e160 | 1303 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1304 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1305 | &remote_set_cmdlist); |
d471ea57 | 1306 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1307 | &remote_show_cmdlist); |
d471ea57 | 1308 | } |
5a2468f5 JM |
1309 | } |
1310 | ||
d471ea57 | 1311 | static enum packet_result |
a76d924d | 1312 | packet_check_result (const char *buf) |
5a2468f5 | 1313 | { |
d471ea57 | 1314 | if (buf[0] != '\0') |
5a2468f5 | 1315 | { |
d471ea57 | 1316 | /* The stub recognized the packet request. Check that the |
23860348 | 1317 | operation succeeded. */ |
a76d924d DJ |
1318 | if (buf[0] == 'E' |
1319 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1320 | && buf[3] == '\0') | |
1321 | /* "Enn" - definitly an error. */ | |
1322 | return PACKET_ERROR; | |
1323 | ||
1324 | /* Always treat "E." as an error. This will be used for | |
1325 | more verbose error messages, such as E.memtypes. */ | |
1326 | if (buf[0] == 'E' && buf[1] == '.') | |
1327 | return PACKET_ERROR; | |
1328 | ||
1329 | /* The packet may or may not be OK. Just assume it is. */ | |
1330 | return PACKET_OK; | |
1331 | } | |
1332 | else | |
1333 | /* The stub does not support the packet. */ | |
1334 | return PACKET_UNKNOWN; | |
1335 | } | |
1336 | ||
1337 | static enum packet_result | |
1338 | packet_ok (const char *buf, struct packet_config *config) | |
1339 | { | |
1340 | enum packet_result result; | |
1341 | ||
4082afcc PA |
1342 | if (config->detect != AUTO_BOOLEAN_TRUE |
1343 | && config->support == PACKET_DISABLE) | |
1344 | internal_error (__FILE__, __LINE__, | |
1345 | _("packet_ok: attempt to use a disabled packet")); | |
1346 | ||
a76d924d DJ |
1347 | result = packet_check_result (buf); |
1348 | switch (result) | |
1349 | { | |
1350 | case PACKET_OK: | |
1351 | case PACKET_ERROR: | |
1352 | /* The stub recognized the packet request. */ | |
4082afcc | 1353 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1354 | { |
d471ea57 AC |
1355 | if (remote_debug) |
1356 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1357 | "Packet %s (%s) is supported\n", |
1358 | config->name, config->title); | |
d471ea57 | 1359 | config->support = PACKET_ENABLE; |
d471ea57 | 1360 | } |
a76d924d DJ |
1361 | break; |
1362 | case PACKET_UNKNOWN: | |
23860348 | 1363 | /* The stub does not support the packet. */ |
4082afcc PA |
1364 | if (config->detect == AUTO_BOOLEAN_AUTO |
1365 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1366 | { |
4082afcc PA |
1367 | /* If the stub previously indicated that the packet was |
1368 | supported then there is a protocol error. */ | |
1369 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1370 | config->name, config->title); | |
1371 | } | |
1372 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1373 | { | |
1374 | /* The user set it wrong. */ | |
1375 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1376 | config->name, config->title); | |
d471ea57 | 1377 | } |
4082afcc PA |
1378 | |
1379 | if (remote_debug) | |
1380 | fprintf_unfiltered (gdb_stdlog, | |
1381 | "Packet %s (%s) is NOT supported\n", | |
1382 | config->name, config->title); | |
1383 | config->support = PACKET_DISABLE; | |
a76d924d | 1384 | break; |
5a2468f5 | 1385 | } |
a76d924d DJ |
1386 | |
1387 | return result; | |
5a2468f5 JM |
1388 | } |
1389 | ||
444abaca DJ |
1390 | enum { |
1391 | PACKET_vCont = 0, | |
1392 | PACKET_X, | |
1393 | PACKET_qSymbol, | |
1394 | PACKET_P, | |
1395 | PACKET_p, | |
1396 | PACKET_Z0, | |
1397 | PACKET_Z1, | |
1398 | PACKET_Z2, | |
1399 | PACKET_Z3, | |
1400 | PACKET_Z4, | |
15a201c8 | 1401 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1402 | PACKET_vFile_open, |
1403 | PACKET_vFile_pread, | |
1404 | PACKET_vFile_pwrite, | |
1405 | PACKET_vFile_close, | |
1406 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1407 | PACKET_vFile_readlink, |
0a93529c | 1408 | PACKET_vFile_fstat, |
0876f84a | 1409 | PACKET_qXfer_auxv, |
23181151 | 1410 | PACKET_qXfer_features, |
c78fa86a | 1411 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1412 | PACKET_qXfer_libraries, |
2268b414 | 1413 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1414 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1415 | PACKET_qXfer_spu_read, |
1416 | PACKET_qXfer_spu_write, | |
07e059b5 | 1417 | PACKET_qXfer_osdata, |
dc146f7c | 1418 | PACKET_qXfer_threads, |
0fb4aa4b | 1419 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1420 | PACKET_qXfer_traceframe_info, |
169081d0 | 1421 | PACKET_qXfer_uib, |
711e434b | 1422 | PACKET_qGetTIBAddr, |
444abaca | 1423 | PACKET_qGetTLSAddr, |
be2a5f71 | 1424 | PACKET_qSupported, |
bd3eecc3 | 1425 | PACKET_qTStatus, |
89be2091 | 1426 | PACKET_QPassSignals, |
82075af2 | 1427 | PACKET_QCatchSyscalls, |
9b224c5e | 1428 | PACKET_QProgramSignals, |
bc3b087d | 1429 | PACKET_QSetWorkingDir, |
aefd8b33 | 1430 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1431 | PACKET_QEnvironmentHexEncoded, |
1432 | PACKET_QEnvironmentReset, | |
1433 | PACKET_QEnvironmentUnset, | |
936d2992 | 1434 | PACKET_qCRC, |
08388c79 | 1435 | PACKET_qSearch_memory, |
2d717e4f DJ |
1436 | PACKET_vAttach, |
1437 | PACKET_vRun, | |
a6f3e723 | 1438 | PACKET_QStartNoAckMode, |
82f73884 | 1439 | PACKET_vKill, |
4aa995e1 PA |
1440 | PACKET_qXfer_siginfo_read, |
1441 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1442 | PACKET_qAttached, |
4082afcc PA |
1443 | |
1444 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1445 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1446 | |
1447 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1448 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1449 | |
1450 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1451 | PACKET_BreakpointCommands, |
4082afcc PA |
1452 | |
1453 | /* Support for fast tracepoints. */ | |
7a697b8d | 1454 | PACKET_FastTracepoints, |
4082afcc PA |
1455 | |
1456 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1457 | PACKET_StaticTracepoints, |
4082afcc PA |
1458 | |
1459 | /* Support for installing tracepoints while a trace experiment is | |
1460 | running. */ | |
1e4d1764 | 1461 | PACKET_InstallInTrace, |
4082afcc | 1462 | |
40ab02ce MS |
1463 | PACKET_bc, |
1464 | PACKET_bs, | |
409873ef | 1465 | PACKET_TracepointSource, |
d914c394 | 1466 | PACKET_QAllow, |
78d85199 | 1467 | PACKET_qXfer_fdpic, |
03583c20 | 1468 | PACKET_QDisableRandomization, |
d1feda86 | 1469 | PACKET_QAgent, |
f6f899bf | 1470 | PACKET_QTBuffer_size, |
9accd112 MM |
1471 | PACKET_Qbtrace_off, |
1472 | PACKET_Qbtrace_bts, | |
b20a6524 | 1473 | PACKET_Qbtrace_pt, |
9accd112 | 1474 | PACKET_qXfer_btrace, |
4082afcc PA |
1475 | |
1476 | /* Support for the QNonStop packet. */ | |
1477 | PACKET_QNonStop, | |
1478 | ||
65706a29 PA |
1479 | /* Support for the QThreadEvents packet. */ |
1480 | PACKET_QThreadEvents, | |
1481 | ||
4082afcc PA |
1482 | /* Support for multi-process extensions. */ |
1483 | PACKET_multiprocess_feature, | |
1484 | ||
1485 | /* Support for enabling and disabling tracepoints while a trace | |
1486 | experiment is running. */ | |
1487 | PACKET_EnableDisableTracepoints_feature, | |
1488 | ||
1489 | /* Support for collecting strings using the tracenz bytecode. */ | |
1490 | PACKET_tracenz_feature, | |
1491 | ||
1492 | /* Support for continuing to run a trace experiment while GDB is | |
1493 | disconnected. */ | |
1494 | PACKET_DisconnectedTracing_feature, | |
1495 | ||
1496 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1497 | PACKET_augmented_libraries_svr4_read_feature, | |
1498 | ||
f4abbc16 MM |
1499 | /* Support for the qXfer:btrace-conf:read packet. */ |
1500 | PACKET_qXfer_btrace_conf, | |
1501 | ||
d33501a5 MM |
1502 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1503 | PACKET_Qbtrace_conf_bts_size, | |
1504 | ||
f7e6eed5 PA |
1505 | /* Support for swbreak+ feature. */ |
1506 | PACKET_swbreak_feature, | |
1507 | ||
1508 | /* Support for hwbreak+ feature. */ | |
1509 | PACKET_hwbreak_feature, | |
1510 | ||
89245bc0 DB |
1511 | /* Support for fork events. */ |
1512 | PACKET_fork_event_feature, | |
1513 | ||
1514 | /* Support for vfork events. */ | |
1515 | PACKET_vfork_event_feature, | |
1516 | ||
b20a6524 MM |
1517 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1518 | PACKET_Qbtrace_conf_pt_size, | |
1519 | ||
94585166 DB |
1520 | /* Support for exec events. */ |
1521 | PACKET_exec_event_feature, | |
1522 | ||
750ce8d1 YQ |
1523 | /* Support for query supported vCont actions. */ |
1524 | PACKET_vContSupported, | |
1525 | ||
de979965 PA |
1526 | /* Support remote CTRL-C. */ |
1527 | PACKET_vCtrlC, | |
1528 | ||
f2faf941 PA |
1529 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1530 | PACKET_no_resumed, | |
1531 | ||
444abaca DJ |
1532 | PACKET_MAX |
1533 | }; | |
506fb367 | 1534 | |
444abaca | 1535 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1536 | |
f7e6eed5 PA |
1537 | /* Returns the packet's corresponding "set remote foo-packet" command |
1538 | state. See struct packet_config for more details. */ | |
1539 | ||
1540 | static enum auto_boolean | |
1541 | packet_set_cmd_state (int packet) | |
1542 | { | |
1543 | return remote_protocol_packets[packet].detect; | |
1544 | } | |
1545 | ||
4082afcc PA |
1546 | /* Returns whether a given packet or feature is supported. This takes |
1547 | into account the state of the corresponding "set remote foo-packet" | |
1548 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1549 | |
4082afcc PA |
1550 | static enum packet_support |
1551 | packet_config_support (struct packet_config *config) | |
1552 | { | |
1553 | switch (config->detect) | |
444abaca | 1554 | { |
4082afcc PA |
1555 | case AUTO_BOOLEAN_TRUE: |
1556 | return PACKET_ENABLE; | |
1557 | case AUTO_BOOLEAN_FALSE: | |
1558 | return PACKET_DISABLE; | |
1559 | case AUTO_BOOLEAN_AUTO: | |
1560 | return config->support; | |
1561 | default: | |
1562 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1563 | } |
4082afcc PA |
1564 | } |
1565 | ||
1566 | /* Same as packet_config_support, but takes the packet's enum value as | |
1567 | argument. */ | |
1568 | ||
1569 | static enum packet_support | |
1570 | packet_support (int packet) | |
1571 | { | |
1572 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1573 | ||
1574 | return packet_config_support (config); | |
dc8acb97 MS |
1575 | } |
1576 | ||
5a2468f5 | 1577 | static void |
444abaca DJ |
1578 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1579 | struct cmd_list_element *c, | |
1580 | const char *value) | |
5a2468f5 | 1581 | { |
444abaca | 1582 | struct packet_config *packet; |
5a2468f5 | 1583 | |
444abaca DJ |
1584 | for (packet = remote_protocol_packets; |
1585 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1586 | packet++) | |
1587 | { | |
1588 | if (&packet->detect == c->var) | |
1589 | { | |
1590 | show_packet_config_cmd (packet); | |
1591 | return; | |
1592 | } | |
1593 | } | |
9b20d036 | 1594 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1595 | c->name); |
5a2468f5 JM |
1596 | } |
1597 | ||
d471ea57 AC |
1598 | /* Should we try one of the 'Z' requests? */ |
1599 | ||
1600 | enum Z_packet_type | |
1601 | { | |
1602 | Z_PACKET_SOFTWARE_BP, | |
1603 | Z_PACKET_HARDWARE_BP, | |
1604 | Z_PACKET_WRITE_WP, | |
1605 | Z_PACKET_READ_WP, | |
1606 | Z_PACKET_ACCESS_WP, | |
1607 | NR_Z_PACKET_TYPES | |
1608 | }; | |
96baa820 | 1609 | |
d471ea57 | 1610 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1611 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1612 | |
7f19b9a2 | 1613 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1614 | |
1615 | static void | |
fba45db2 KB |
1616 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1617 | struct cmd_list_element *c) | |
96baa820 | 1618 | { |
d471ea57 | 1619 | int i; |
a744cf53 | 1620 | |
d471ea57 | 1621 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1622 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1623 | } |
1624 | ||
1625 | static void | |
08546159 AC |
1626 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1627 | struct cmd_list_element *c, | |
1628 | const char *value) | |
96baa820 | 1629 | { |
d471ea57 | 1630 | int i; |
a744cf53 | 1631 | |
d471ea57 AC |
1632 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1633 | { | |
444abaca | 1634 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1635 | } |
96baa820 JM |
1636 | } |
1637 | ||
4082afcc PA |
1638 | /* Returns true if the multi-process extensions are in effect. */ |
1639 | ||
1640 | static int | |
1641 | remote_multi_process_p (struct remote_state *rs) | |
1642 | { | |
1643 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1644 | } | |
1645 | ||
de0d863e DB |
1646 | /* Returns true if fork events are supported. */ |
1647 | ||
1648 | static int | |
1649 | remote_fork_event_p (struct remote_state *rs) | |
1650 | { | |
1651 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1652 | } | |
1653 | ||
c269dbdb DB |
1654 | /* Returns true if vfork events are supported. */ |
1655 | ||
1656 | static int | |
1657 | remote_vfork_event_p (struct remote_state *rs) | |
1658 | { | |
1659 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1660 | } | |
1661 | ||
d46addbb DB |
1662 | /* Returns true if exec events are supported. */ |
1663 | ||
1664 | static int | |
1665 | remote_exec_event_p (struct remote_state *rs) | |
1666 | { | |
1667 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1668 | } | |
1669 | ||
cbb8991c DB |
1670 | /* Insert fork catchpoint target routine. If fork events are enabled |
1671 | then return success, nothing more to do. */ | |
1672 | ||
1673 | static int | |
1674 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1675 | { | |
1676 | struct remote_state *rs = get_remote_state (); | |
1677 | ||
1678 | return !remote_fork_event_p (rs); | |
1679 | } | |
1680 | ||
1681 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1682 | return success. */ | |
1683 | ||
1684 | static int | |
1685 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1686 | { | |
1687 | return 0; | |
1688 | } | |
1689 | ||
1690 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1691 | then return success, nothing more to do. */ | |
1692 | ||
1693 | static int | |
1694 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1695 | { | |
1696 | struct remote_state *rs = get_remote_state (); | |
1697 | ||
1698 | return !remote_vfork_event_p (rs); | |
1699 | } | |
1700 | ||
1701 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1702 | return success. */ | |
1703 | ||
1704 | static int | |
1705 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1706 | { | |
1707 | return 0; | |
1708 | } | |
1709 | ||
d46addbb DB |
1710 | /* Insert exec catchpoint target routine. If exec events are |
1711 | enabled, just return success. */ | |
1712 | ||
1713 | static int | |
1714 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1715 | { | |
1716 | struct remote_state *rs = get_remote_state (); | |
1717 | ||
1718 | return !remote_exec_event_p (rs); | |
1719 | } | |
1720 | ||
1721 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1722 | return success. */ | |
1723 | ||
1724 | static int | |
1725 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1726 | { | |
1727 | return 0; | |
1728 | } | |
1729 | ||
74531fed PA |
1730 | \f |
1731 | /* Asynchronous signal handle registered as event loop source for | |
1732 | when we have pending events ready to be passed to the core. */ | |
1733 | ||
1734 | static struct async_event_handler *remote_async_inferior_event_token; | |
1735 | ||
c906108c SS |
1736 | \f |
1737 | ||
79d7f229 PA |
1738 | static ptid_t magic_null_ptid; |
1739 | static ptid_t not_sent_ptid; | |
1740 | static ptid_t any_thread_ptid; | |
1741 | ||
0b16c5cf PA |
1742 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1743 | detach instead of killing it when bailing out). */ | |
1744 | ||
1745 | static int | |
1746 | remote_query_attached (int pid) | |
1747 | { | |
1748 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1749 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1750 | |
4082afcc | 1751 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1752 | return 0; |
1753 | ||
1754 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1755 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1756 | else |
bba74b36 | 1757 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1758 | |
1759 | putpkt (rs->buf); | |
1760 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1761 | ||
1762 | switch (packet_ok (rs->buf, | |
1554e9be | 1763 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1764 | { |
1765 | case PACKET_OK: | |
1766 | if (strcmp (rs->buf, "1") == 0) | |
1767 | return 1; | |
1768 | break; | |
1769 | case PACKET_ERROR: | |
1770 | warning (_("Remote failure reply: %s"), rs->buf); | |
1771 | break; | |
1772 | case PACKET_UNKNOWN: | |
1773 | break; | |
1774 | } | |
1775 | ||
1776 | return 0; | |
1777 | } | |
1778 | ||
49c62f2e PA |
1779 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1780 | has been invented by GDB, instead of reported by the target. Since | |
1781 | we can be connected to a remote system before before knowing about | |
1782 | any inferior, mark the target with execution when we find the first | |
1783 | inferior. If ATTACHED is 1, then we had just attached to this | |
1784 | inferior. If it is 0, then we just created this inferior. If it | |
1785 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1786 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1787 | attempt to open this inferior's executable as the main executable | |
1788 | if no main executable is open already. */ | |
1941c569 PA |
1789 | |
1790 | static struct inferior * | |
1b6e6f5c GB |
1791 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1792 | int try_open_exec) | |
1941c569 | 1793 | { |
1941c569 PA |
1794 | struct inferior *inf; |
1795 | ||
0b16c5cf PA |
1796 | /* Check whether this process we're learning about is to be |
1797 | considered attached, or if is to be considered to have been | |
1798 | spawned by the stub. */ | |
1799 | if (attached == -1) | |
1800 | attached = remote_query_attached (pid); | |
1801 | ||
f5656ead | 1802 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1803 | { |
1804 | /* If the target shares code across all inferiors, then every | |
1805 | attach adds a new inferior. */ | |
1806 | inf = add_inferior (pid); | |
1807 | ||
1808 | /* ... and every inferior is bound to the same program space. | |
1809 | However, each inferior may still have its own address | |
1810 | space. */ | |
1811 | inf->aspace = maybe_new_address_space (); | |
1812 | inf->pspace = current_program_space; | |
1813 | } | |
1814 | else | |
1815 | { | |
1816 | /* In the traditional debugging scenario, there's a 1-1 match | |
1817 | between program/address spaces. We simply bind the inferior | |
1818 | to the program space's address space. */ | |
1819 | inf = current_inferior (); | |
1820 | inferior_appeared (inf, pid); | |
1821 | } | |
1941c569 | 1822 | |
0b16c5cf | 1823 | inf->attach_flag = attached; |
49c62f2e | 1824 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1825 | |
1b6e6f5c GB |
1826 | /* If no main executable is currently open then attempt to |
1827 | open the file that was executed to create this inferior. */ | |
835205d0 | 1828 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 1829 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 1830 | |
1941c569 PA |
1831 | return inf; |
1832 | } | |
1833 | ||
85ad3aaf PA |
1834 | static struct private_thread_info * |
1835 | get_private_info_thread (struct thread_info *info); | |
1836 | ||
1941c569 PA |
1837 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
1838 | according to RUNNING. */ | |
1839 | ||
c906108c | 1840 | static void |
0d5b594f | 1841 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 1842 | { |
b7ea362b | 1843 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 1844 | struct thread_info *thread; |
b7ea362b PA |
1845 | |
1846 | /* GDB historically didn't pull threads in the initial connection | |
1847 | setup. If the remote target doesn't even have a concept of | |
1848 | threads (e.g., a bare-metal target), even if internally we | |
1849 | consider that a single-threaded target, mentioning a new thread | |
1850 | might be confusing to the user. Be silent then, preserving the | |
1851 | age old behavior. */ | |
1852 | if (rs->starting_up) | |
85ad3aaf | 1853 | thread = add_thread_silent (ptid); |
b7ea362b | 1854 | else |
85ad3aaf | 1855 | thread = add_thread (ptid); |
1941c569 | 1856 | |
85ad3aaf | 1857 | get_private_info_thread (thread)->vcont_resumed = executing; |
0d5b594f | 1858 | set_executing (ptid, executing); |
1941c569 PA |
1859 | set_running (ptid, running); |
1860 | } | |
1861 | ||
1862 | /* Come here when we learn about a thread id from the remote target. | |
1863 | It may be the first time we hear about such thread, so take the | |
1864 | opportunity to add it to GDB's thread list. In case this is the | |
1865 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
1866 | GDB's inferior list as well. EXECUTING indicates whether the |
1867 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
1868 | |
1869 | static void | |
0d5b594f | 1870 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 1871 | { |
0d5b594f PA |
1872 | /* In non-stop mode, we assume new found threads are (externally) |
1873 | running until proven otherwise with a stop reply. In all-stop, | |
1874 | we can only get here if all threads are stopped. */ | |
1875 | int running = target_is_non_stop_p () ? 1 : 0; | |
1876 | ||
c906108c SS |
1877 | /* If this is a new thread, add it to GDB's thread list. |
1878 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1879 | |
1880 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1881 | { | |
1882 | /* We're seeing an event on a thread id we knew had exited. | |
1883 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 1884 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
1885 | return; |
1886 | } | |
1887 | ||
79d7f229 | 1888 | if (!in_thread_list (currthread)) |
c0a2216e | 1889 | { |
1941c569 | 1890 | struct inferior *inf = NULL; |
bad34192 | 1891 | int pid = ptid_get_pid (currthread); |
1941c569 | 1892 | |
bad34192 PA |
1893 | if (ptid_is_pid (inferior_ptid) |
1894 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1895 | { |
1896 | /* inferior_ptid has no thread member yet. This can happen | |
1897 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1898 | stub doesn't support qC. This is the first stop reported | |
1899 | after an attach, so this is the main thread. Update the | |
1900 | ptid in the thread list. */ | |
bad34192 PA |
1901 | if (in_thread_list (pid_to_ptid (pid))) |
1902 | thread_change_ptid (inferior_ptid, currthread); | |
1903 | else | |
1904 | { | |
0d5b594f | 1905 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
1906 | inferior_ptid = currthread; |
1907 | } | |
dc146f7c | 1908 | return; |
c0a2216e | 1909 | } |
82f73884 PA |
1910 | |
1911 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1912 | { |
1913 | /* inferior_ptid is not set yet. This can happen with the | |
1914 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1915 | doesn't support qC. This is the first stop reported | |
1916 | after an attach, so this is the main thread. Update the | |
1917 | ptid in the thread list. */ | |
dc146f7c | 1918 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1919 | return; |
c0a2216e | 1920 | } |
82f73884 | 1921 | |
29c87f7f PA |
1922 | /* When connecting to a target remote, or to a target |
1923 | extended-remote which already was debugging an inferior, we | |
1924 | may not know about it yet. Add it before adding its child | |
1925 | thread, so notifications are emitted in a sensible order. */ | |
1926 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1927 | { |
1928 | struct remote_state *rs = get_remote_state (); | |
1929 | int fake_pid_p = !remote_multi_process_p (rs); | |
1930 | ||
1931 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1932 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1933 | } |
29c87f7f | 1934 | |
82f73884 | 1935 | /* This is really a new thread. Add it. */ |
0d5b594f | 1936 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
1937 | |
1938 | /* If we found a new inferior, let the common code do whatever | |
1939 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1940 | breakpoints), unless we're just setting up an all-stop |
1941 | connection. */ | |
1941c569 | 1942 | if (inf != NULL) |
b7ea362b PA |
1943 | { |
1944 | struct remote_state *rs = get_remote_state (); | |
1945 | ||
6efcd9a8 | 1946 | if (!rs->starting_up) |
0d5b594f | 1947 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 1948 | } |
c0a2216e | 1949 | } |
c906108c SS |
1950 | } |
1951 | ||
85ad3aaf | 1952 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 1953 | |
70221824 | 1954 | static struct private_thread_info * |
85ad3aaf | 1955 | get_private_info_thread (struct thread_info *thread) |
dc146f7c | 1956 | { |
85ad3aaf | 1957 | gdb_assert (thread != NULL); |
dc146f7c | 1958 | |
85ad3aaf | 1959 | if (thread->priv == NULL) |
dc146f7c | 1960 | { |
85ad3aaf PA |
1961 | struct private_thread_info *priv = XNEW (struct private_thread_info); |
1962 | ||
1963 | thread->private_dtor = free_private_thread_info; | |
1964 | thread->priv = priv; | |
1965 | ||
1966 | priv->core = -1; | |
1967 | priv->extra = NULL; | |
1968 | priv->name = NULL; | |
1969 | priv->name = NULL; | |
1970 | priv->last_resume_step = 0; | |
1971 | priv->last_resume_sig = GDB_SIGNAL_0; | |
1972 | priv->vcont_resumed = 0; | |
f6327dcb | 1973 | priv->thread_handle = nullptr; |
dc146f7c VP |
1974 | } |
1975 | ||
85ad3aaf PA |
1976 | return thread->priv; |
1977 | } | |
1978 | ||
1979 | /* Return PTID's private thread data, creating it if necessary. */ | |
1980 | ||
1981 | static struct private_thread_info * | |
1982 | get_private_info_ptid (ptid_t ptid) | |
1983 | { | |
1984 | struct thread_info *info = find_thread_ptid (ptid); | |
1985 | ||
1986 | return get_private_info_thread (info); | |
dc146f7c VP |
1987 | } |
1988 | ||
74531fed PA |
1989 | /* Call this function as a result of |
1990 | 1) A halt indication (T packet) containing a thread id | |
1991 | 2) A direct query of currthread | |
0df8b418 | 1992 | 3) Successful execution of set thread */ |
74531fed PA |
1993 | |
1994 | static void | |
47f8a51d | 1995 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1996 | { |
47f8a51d | 1997 | rs->general_thread = currthread; |
74531fed PA |
1998 | } |
1999 | ||
89be2091 DJ |
2000 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2001 | it can simply pass through to the inferior without reporting. */ | |
2002 | ||
2003 | static void | |
94bedb42 TT |
2004 | remote_pass_signals (struct target_ops *self, |
2005 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 2006 | { |
4082afcc | 2007 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2008 | { |
2009 | char *pass_packet, *p; | |
89be2091 | 2010 | int count = 0, i; |
747dc59d | 2011 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
2012 | |
2013 | gdb_assert (numsigs < 256); | |
2014 | for (i = 0; i < numsigs; i++) | |
2015 | { | |
2455069d | 2016 | if (pass_signals[i]) |
89be2091 DJ |
2017 | count++; |
2018 | } | |
224c3ddb | 2019 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2020 | strcpy (pass_packet, "QPassSignals:"); |
2021 | p = pass_packet + strlen (pass_packet); | |
2022 | for (i = 0; i < numsigs; i++) | |
2023 | { | |
2455069d | 2024 | if (pass_signals[i]) |
89be2091 DJ |
2025 | { |
2026 | if (i >= 16) | |
2027 | *p++ = tohex (i >> 4); | |
2028 | *p++ = tohex (i & 15); | |
2029 | if (count) | |
2030 | *p++ = ';'; | |
2031 | else | |
2032 | break; | |
2033 | count--; | |
2034 | } | |
2035 | } | |
2036 | *p = 0; | |
747dc59d | 2037 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2038 | { |
89be2091 DJ |
2039 | putpkt (pass_packet); |
2040 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2041 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2042 | if (rs->last_pass_packet) |
2043 | xfree (rs->last_pass_packet); | |
2044 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2045 | } |
2046 | else | |
2047 | xfree (pass_packet); | |
2048 | } | |
2049 | } | |
2050 | ||
82075af2 JS |
2051 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2052 | to report syscalls to GDB. */ | |
2053 | ||
2054 | static int | |
2055 | remote_set_syscall_catchpoint (struct target_ops *self, | |
2056 | int pid, int needed, int any_count, | |
2057 | int table_size, int *table) | |
2058 | { | |
b80406ac | 2059 | const char *catch_packet; |
82075af2 JS |
2060 | enum packet_result result; |
2061 | int n_sysno = 0; | |
2062 | ||
2063 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2064 | { | |
2065 | /* Not supported. */ | |
2066 | return 1; | |
2067 | } | |
2068 | ||
2069 | if (needed && !any_count) | |
2070 | { | |
2071 | int i; | |
2072 | ||
2073 | /* Count how many syscalls are to be caught (table[sysno] != 0). */ | |
2074 | for (i = 0; i < table_size; i++) | |
2075 | { | |
2076 | if (table[i] != 0) | |
2077 | n_sysno++; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | if (remote_debug) | |
2082 | { | |
2083 | fprintf_unfiltered (gdb_stdlog, | |
2084 | "remote_set_syscall_catchpoint " | |
2085 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2086 | pid, needed, any_count, n_sysno); | |
2087 | } | |
2088 | ||
b80406ac | 2089 | gdb::unique_xmalloc_ptr<char> built_packet; |
82075af2 JS |
2090 | if (needed) |
2091 | { | |
2092 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2093 | characters for a sysno. If the resulting packet size is too | |
2094 | big, fallback on the non-selective packet. */ | |
2095 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
2096 | ||
b80406ac TT |
2097 | built_packet.reset ((char *) xmalloc (maxpktsz)); |
2098 | strcpy (built_packet.get (), "QCatchSyscalls:1"); | |
82075af2 JS |
2099 | if (!any_count) |
2100 | { | |
2101 | int i; | |
2102 | char *p; | |
2103 | ||
b80406ac | 2104 | p = built_packet.get (); |
82075af2 JS |
2105 | p += strlen (p); |
2106 | ||
2107 | /* Add in catch_packet each syscall to be caught (table[i] != 0). */ | |
2108 | for (i = 0; i < table_size; i++) | |
2109 | { | |
2110 | if (table[i] != 0) | |
b80406ac TT |
2111 | p += xsnprintf (p, built_packet.get () + maxpktsz - p, |
2112 | ";%x", i); | |
82075af2 JS |
2113 | } |
2114 | } | |
b80406ac | 2115 | if (strlen (built_packet.get ()) > get_remote_packet_size ()) |
82075af2 JS |
2116 | { |
2117 | /* catch_packet too big. Fallback to less efficient | |
2118 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2119 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2120 | } |
b80406ac TT |
2121 | else |
2122 | catch_packet = built_packet.get (); | |
82075af2 JS |
2123 | } |
2124 | else | |
b80406ac | 2125 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2126 | |
b80406ac | 2127 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2128 | |
b80406ac TT |
2129 | putpkt (catch_packet); |
2130 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2131 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2132 | if (result == PACKET_OK) | |
2133 | return 0; | |
2134 | else | |
2135 | return -1; | |
82075af2 JS |
2136 | } |
2137 | ||
9b224c5e PA |
2138 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2139 | signals it should pass through to the inferior when detaching. */ | |
2140 | ||
2141 | static void | |
daf5e9b6 TT |
2142 | remote_program_signals (struct target_ops *self, |
2143 | int numsigs, unsigned char *signals) | |
9b224c5e | 2144 | { |
4082afcc | 2145 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2146 | { |
2147 | char *packet, *p; | |
2148 | int count = 0, i; | |
5e4a05c4 | 2149 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2150 | |
2151 | gdb_assert (numsigs < 256); | |
2152 | for (i = 0; i < numsigs; i++) | |
2153 | { | |
2154 | if (signals[i]) | |
2155 | count++; | |
2156 | } | |
224c3ddb | 2157 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2158 | strcpy (packet, "QProgramSignals:"); |
2159 | p = packet + strlen (packet); | |
2160 | for (i = 0; i < numsigs; i++) | |
2161 | { | |
2162 | if (signal_pass_state (i)) | |
2163 | { | |
2164 | if (i >= 16) | |
2165 | *p++ = tohex (i >> 4); | |
2166 | *p++ = tohex (i & 15); | |
2167 | if (count) | |
2168 | *p++ = ';'; | |
2169 | else | |
2170 | break; | |
2171 | count--; | |
2172 | } | |
2173 | } | |
2174 | *p = 0; | |
5e4a05c4 TT |
2175 | if (!rs->last_program_signals_packet |
2176 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2177 | { |
9b224c5e PA |
2178 | putpkt (packet); |
2179 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2180 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2181 | xfree (rs->last_program_signals_packet); |
2182 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2183 | } |
2184 | else | |
2185 | xfree (packet); | |
2186 | } | |
2187 | } | |
2188 | ||
79d7f229 PA |
2189 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2190 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2191 | thread. If GEN is set, set the general thread, if not, then set | |
2192 | the step/continue thread. */ | |
c906108c | 2193 | static void |
d62a8ae2 | 2194 | set_thread (ptid_t ptid, int gen) |
c906108c | 2195 | { |
d01949b6 | 2196 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2197 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2198 | char *buf = rs->buf; |
79d7f229 | 2199 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2200 | |
79d7f229 | 2201 | if (ptid_equal (state, ptid)) |
c906108c SS |
2202 | return; |
2203 | ||
79d7f229 PA |
2204 | *buf++ = 'H'; |
2205 | *buf++ = gen ? 'g' : 'c'; | |
2206 | if (ptid_equal (ptid, magic_null_ptid)) | |
2207 | xsnprintf (buf, endbuf - buf, "0"); | |
2208 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2209 | xsnprintf (buf, endbuf - buf, "0"); | |
2210 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2211 | xsnprintf (buf, endbuf - buf, "-1"); | |
2212 | else | |
82f73884 | 2213 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2214 | putpkt (rs->buf); |
6d820c5c | 2215 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2216 | if (gen) |
47f8a51d | 2217 | rs->general_thread = ptid; |
c906108c | 2218 | else |
47f8a51d | 2219 | rs->continue_thread = ptid; |
c906108c | 2220 | } |
79d7f229 PA |
2221 | |
2222 | static void | |
d62a8ae2 | 2223 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2224 | { |
2225 | set_thread (ptid, 1); | |
2226 | } | |
2227 | ||
2228 | static void | |
d62a8ae2 | 2229 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2230 | { |
2231 | set_thread (ptid, 0); | |
2232 | } | |
2233 | ||
3c9c4b83 PA |
2234 | /* Change the remote current process. Which thread within the process |
2235 | ends up selected isn't important, as long as it is the same process | |
2236 | as what INFERIOR_PTID points to. | |
2237 | ||
2238 | This comes from that fact that there is no explicit notion of | |
2239 | "selected process" in the protocol. The selected process for | |
2240 | general operations is the process the selected general thread | |
2241 | belongs to. */ | |
2242 | ||
2243 | static void | |
2244 | set_general_process (void) | |
2245 | { | |
2246 | struct remote_state *rs = get_remote_state (); | |
2247 | ||
2248 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2249 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2250 | return; |
2251 | ||
2252 | /* We only need to change the remote current thread if it's pointing | |
2253 | at some other process. */ | |
47f8a51d | 2254 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2255 | set_general_thread (inferior_ptid); |
2256 | } | |
2257 | ||
c906108c | 2258 | \f |
7d1a114c PA |
2259 | /* Return nonzero if this is the main thread that we made up ourselves |
2260 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2261 | |
2262 | static int | |
7d1a114c | 2263 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2264 | { |
c0a2216e PA |
2265 | if (ptid_equal (ptid, magic_null_ptid)) |
2266 | /* The main thread is always alive. */ | |
2267 | return 1; | |
2268 | ||
ba348170 | 2269 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2270 | /* The main thread is always alive. This can happen after a |
2271 | vAttach, if the remote side doesn't support | |
2272 | multi-threading. */ | |
2273 | return 1; | |
2274 | ||
7d1a114c PA |
2275 | return 0; |
2276 | } | |
2277 | ||
2278 | /* Return nonzero if the thread PTID is still alive on the remote | |
2279 | system. */ | |
2280 | ||
2281 | static int | |
2282 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2283 | { | |
2284 | struct remote_state *rs = get_remote_state (); | |
2285 | char *p, *endp; | |
2286 | ||
2287 | /* Check if this is a thread that we made up ourselves to model | |
2288 | non-threaded targets as single-threaded. */ | |
2289 | if (remote_thread_always_alive (ops, ptid)) | |
2290 | return 1; | |
2291 | ||
82f73884 PA |
2292 | p = rs->buf; |
2293 | endp = rs->buf + get_remote_packet_size (); | |
2294 | ||
2295 | *p++ = 'T'; | |
2296 | write_ptid (p, endp, ptid); | |
2297 | ||
2e9f7625 | 2298 | putpkt (rs->buf); |
6d820c5c | 2299 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2300 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2301 | } |
2302 | ||
79efa585 SM |
2303 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2304 | The thread_info object owns the memory for the name. */ | |
2305 | ||
2306 | static const char * | |
2307 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2308 | { | |
2309 | if (info->priv != NULL) | |
2310 | return info->priv->name; | |
2311 | ||
2312 | return NULL; | |
2313 | } | |
2314 | ||
c906108c SS |
2315 | /* About these extended threadlist and threadinfo packets. They are |
2316 | variable length packets but, the fields within them are often fixed | |
2317 | length. They are redundent enough to send over UDP as is the | |
2318 | remote protocol in general. There is a matching unit test module | |
2319 | in libstub. */ | |
2320 | ||
23860348 | 2321 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2322 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2323 | changable. */ |
cce74817 JM |
2324 | |
2325 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2326 | Plan to fix this. */ |
cce74817 | 2327 | |
23860348 | 2328 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2329 | |
9d1f7ab2 | 2330 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2331 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2332 | |
2333 | struct gdb_ext_thread_info | |
c5aa993b | 2334 | { |
23860348 | 2335 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2336 | int active; /* Has state interesting to GDB? |
23860348 | 2337 | regs, stack. */ |
2bc416ba | 2338 | char display[256]; /* Brief state display, name, |
cedea757 | 2339 | blocked/suspended. */ |
23860348 | 2340 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2341 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2342 | whatever. */ |
c5aa993b | 2343 | }; |
cce74817 JM |
2344 | |
2345 | /* The volume of remote transfers can be limited by submitting | |
2346 | a mask containing bits specifying the desired information. | |
2347 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2348 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2349 | |
2350 | #define TAG_THREADID 1 | |
2351 | #define TAG_EXISTS 2 | |
2352 | #define TAG_DISPLAY 4 | |
2353 | #define TAG_THREADNAME 8 | |
c5aa993b | 2354 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2355 | |
23860348 | 2356 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2357 | |
a14ed312 | 2358 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2359 | |
a14ed312 | 2360 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2361 | |
a14ed312 | 2362 | static char *pack_int (char *buf, int value); |
cce74817 | 2363 | |
a14ed312 | 2364 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2365 | |
a14ed312 | 2366 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2367 | |
23860348 | 2368 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2369 | |
23860348 | 2370 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2371 | |
23860348 | 2372 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2373 | |
23860348 | 2374 | static int threadref_to_int (threadref *ref); |
cce74817 | 2375 | |
23860348 | 2376 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2377 | |
23860348 | 2378 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2379 | |
2bc416ba | 2380 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2381 | threadref *id); |
cce74817 | 2382 | |
a14ed312 | 2383 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2384 | threadref *expectedref, |
a14ed312 KB |
2385 | struct gdb_ext_thread_info |
2386 | *info); | |
cce74817 JM |
2387 | |
2388 | ||
2bc416ba | 2389 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2390 | int fieldset, /*TAG mask */ |
a14ed312 | 2391 | struct gdb_ext_thread_info *info); |
cce74817 | 2392 | |
a14ed312 KB |
2393 | static char *pack_threadlist_request (char *pkt, int startflag, |
2394 | int threadcount, | |
23860348 | 2395 | threadref *nextthread); |
cce74817 | 2396 | |
a14ed312 KB |
2397 | static int parse_threadlist_response (char *pkt, |
2398 | int result_limit, | |
23860348 | 2399 | threadref *original_echo, |
2bc416ba | 2400 | threadref *resultlist, |
23860348 | 2401 | int *doneflag); |
cce74817 | 2402 | |
a14ed312 | 2403 | static int remote_get_threadlist (int startflag, |
23860348 | 2404 | threadref *nextthread, |
a14ed312 KB |
2405 | int result_limit, |
2406 | int *done, | |
2bc416ba | 2407 | int *result_count, |
23860348 | 2408 | threadref *threadlist); |
cce74817 | 2409 | |
23860348 | 2410 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2411 | |
a14ed312 KB |
2412 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2413 | void *context, int looplimit); | |
cce74817 | 2414 | |
23860348 | 2415 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2416 | |
82f73884 PA |
2417 | |
2418 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2419 | buffer we're allowed to write to. Returns | |
2420 | BUF+CHARACTERS_WRITTEN. */ | |
2421 | ||
2422 | static char * | |
2423 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2424 | { | |
2425 | int pid, tid; | |
2426 | struct remote_state *rs = get_remote_state (); | |
2427 | ||
2428 | if (remote_multi_process_p (rs)) | |
2429 | { | |
2430 | pid = ptid_get_pid (ptid); | |
2431 | if (pid < 0) | |
2432 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2433 | else | |
2434 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2435 | } | |
ba348170 | 2436 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2437 | if (tid < 0) |
2438 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2439 | else | |
2440 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2441 | ||
2442 | return buf; | |
2443 | } | |
2444 | ||
256642e8 PA |
2445 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2446 | last parsed char. Returns null_ptid if no thread id is found, and | |
2447 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2448 | |
2449 | static ptid_t | |
256642e8 | 2450 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2451 | { |
256642e8 PA |
2452 | const char *p = buf; |
2453 | const char *pp; | |
82f73884 | 2454 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2455 | |
2456 | if (*p == 'p') | |
2457 | { | |
2458 | /* Multi-process ptid. */ | |
2459 | pp = unpack_varlen_hex (p + 1, &pid); | |
2460 | if (*pp != '.') | |
b37520b6 | 2461 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2462 | |
2463 | p = pp; | |
2464 | pp = unpack_varlen_hex (p + 1, &tid); | |
2465 | if (obuf) | |
2466 | *obuf = pp; | |
ba348170 | 2467 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2468 | } |
2469 | ||
2470 | /* No multi-process. Just a tid. */ | |
2471 | pp = unpack_varlen_hex (p, &tid); | |
2472 | ||
c9f35b34 KB |
2473 | /* Return null_ptid when no thread id is found. */ |
2474 | if (p == pp) | |
2475 | { | |
2476 | if (obuf) | |
2477 | *obuf = pp; | |
2478 | return null_ptid; | |
2479 | } | |
2480 | ||
82f73884 | 2481 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2482 | what's in inferior_ptid, unless it's null at this point. If so, |
2483 | then since there's no way to know the pid of the reported | |
2484 | threads, use the magic number. */ | |
2485 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2486 | pid = ptid_get_pid (magic_null_ptid); | |
2487 | else | |
2488 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2489 | |
2490 | if (obuf) | |
2491 | *obuf = pp; | |
ba348170 | 2492 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2493 | } |
2494 | ||
c906108c | 2495 | static int |
fba45db2 | 2496 | stubhex (int ch) |
c906108c SS |
2497 | { |
2498 | if (ch >= 'a' && ch <= 'f') | |
2499 | return ch - 'a' + 10; | |
2500 | if (ch >= '0' && ch <= '9') | |
2501 | return ch - '0'; | |
2502 | if (ch >= 'A' && ch <= 'F') | |
2503 | return ch - 'A' + 10; | |
2504 | return -1; | |
2505 | } | |
2506 | ||
2507 | static int | |
fba45db2 | 2508 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2509 | { |
2510 | int nibble; | |
2511 | int retval = 0; | |
2512 | ||
2513 | while (fieldlength) | |
2514 | { | |
2515 | nibble = stubhex (*buff++); | |
2516 | retval |= nibble; | |
2517 | fieldlength--; | |
2518 | if (fieldlength) | |
2519 | retval = retval << 4; | |
2520 | } | |
2521 | return retval; | |
2522 | } | |
2523 | ||
c906108c | 2524 | static char * |
fba45db2 | 2525 | unpack_nibble (char *buf, int *val) |
c906108c | 2526 | { |
b7589f7d | 2527 | *val = fromhex (*buf++); |
c906108c SS |
2528 | return buf; |
2529 | } | |
2530 | ||
c906108c | 2531 | static char * |
fba45db2 | 2532 | unpack_byte (char *buf, int *value) |
c906108c SS |
2533 | { |
2534 | *value = stub_unpack_int (buf, 2); | |
2535 | return buf + 2; | |
2536 | } | |
2537 | ||
2538 | static char * | |
fba45db2 | 2539 | pack_int (char *buf, int value) |
c906108c SS |
2540 | { |
2541 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2542 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2543 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2544 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2545 | return buf; | |
2546 | } | |
2547 | ||
2548 | static char * | |
fba45db2 | 2549 | unpack_int (char *buf, int *value) |
c906108c SS |
2550 | { |
2551 | *value = stub_unpack_int (buf, 8); | |
2552 | return buf + 8; | |
2553 | } | |
2554 | ||
23860348 | 2555 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2556 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2557 | |
2558 | static char * | |
fba45db2 | 2559 | pack_string (char *pkt, char *string) |
c906108c SS |
2560 | { |
2561 | char ch; | |
2562 | int len; | |
2563 | ||
2564 | len = strlen (string); | |
2565 | if (len > 200) | |
23860348 | 2566 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2567 | pkt = pack_hex_byte (pkt, len); |
2568 | while (len-- > 0) | |
2569 | { | |
2570 | ch = *string++; | |
2571 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2572 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2573 | *pkt++ = ch; |
2574 | } | |
2575 | return pkt; | |
2576 | } | |
2577 | #endif /* 0 (unused) */ | |
2578 | ||
2579 | static char * | |
fba45db2 | 2580 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2581 | { |
2582 | while (length--) | |
2583 | *dest++ = *src++; | |
2584 | *dest = '\0'; | |
2585 | return src; | |
2586 | } | |
2587 | ||
2588 | static char * | |
fba45db2 | 2589 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2590 | { |
2591 | char *limit; | |
2592 | unsigned char *altid; | |
2593 | ||
2594 | altid = (unsigned char *) id; | |
2595 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2596 | while (pkt < limit) | |
2597 | pkt = pack_hex_byte (pkt, *altid++); | |
2598 | return pkt; | |
2599 | } | |
2600 | ||
2601 | ||
2602 | static char * | |
fba45db2 | 2603 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2604 | { |
2605 | char *altref; | |
2606 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2607 | int x, y; | |
2608 | ||
2609 | altref = (char *) id; | |
2610 | ||
2611 | while (inbuf < limit) | |
2612 | { | |
2613 | x = stubhex (*inbuf++); | |
2614 | y = stubhex (*inbuf++); | |
2615 | *altref++ = (x << 4) | y; | |
2616 | } | |
2617 | return inbuf; | |
2618 | } | |
2619 | ||
2620 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2621 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2622 | to use 64bit thread references internally. This is an adapter |
2623 | function. */ | |
2624 | ||
2625 | void | |
fba45db2 | 2626 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2627 | { |
2628 | unsigned char *scan; | |
2629 | ||
2630 | scan = (unsigned char *) id; | |
2631 | { | |
2632 | int i = 4; | |
2633 | while (i--) | |
2634 | *scan++ = 0; | |
2635 | } | |
2636 | *scan++ = (value >> 24) & 0xff; | |
2637 | *scan++ = (value >> 16) & 0xff; | |
2638 | *scan++ = (value >> 8) & 0xff; | |
2639 | *scan++ = (value & 0xff); | |
2640 | } | |
2641 | ||
2642 | static int | |
fba45db2 | 2643 | threadref_to_int (threadref *ref) |
c906108c SS |
2644 | { |
2645 | int i, value = 0; | |
2646 | unsigned char *scan; | |
2647 | ||
cfd77fa1 | 2648 | scan = *ref; |
c906108c SS |
2649 | scan += 4; |
2650 | i = 4; | |
2651 | while (i-- > 0) | |
2652 | value = (value << 8) | ((*scan++) & 0xff); | |
2653 | return value; | |
2654 | } | |
2655 | ||
2656 | static void | |
fba45db2 | 2657 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2658 | { |
2659 | int i; | |
2660 | unsigned char *csrc, *cdest; | |
2661 | ||
2662 | csrc = (unsigned char *) src; | |
2663 | cdest = (unsigned char *) dest; | |
2664 | i = 8; | |
2665 | while (i--) | |
2666 | *cdest++ = *csrc++; | |
2667 | } | |
2668 | ||
2669 | static int | |
fba45db2 | 2670 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2671 | { |
23860348 | 2672 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2673 | #if 0 |
2674 | unsigned char *srcp, *destp; | |
2675 | int i, result; | |
2676 | srcp = (char *) src; | |
2677 | destp = (char *) dest; | |
2678 | ||
2679 | result = 1; | |
2680 | while (i-- > 0) | |
2681 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2682 | return result; | |
2683 | #endif | |
2684 | return 1; | |
2685 | } | |
2686 | ||
2687 | /* | |
c5aa993b JM |
2688 | threadid:1, # always request threadid |
2689 | context_exists:2, | |
2690 | display:4, | |
2691 | unique_name:8, | |
2692 | more_display:16 | |
2693 | */ | |
c906108c SS |
2694 | |
2695 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2696 | ||
2697 | static char * | |
fba45db2 | 2698 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2699 | { |
23860348 MS |
2700 | *pkt++ = 'q'; /* Info Query */ |
2701 | *pkt++ = 'P'; /* process or thread info */ | |
2702 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2703 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2704 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2705 | return pkt; |
2706 | } | |
2707 | ||
23860348 | 2708 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2709 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2710 | add more fields as time goes by. */ |
c906108c | 2711 | |
23860348 | 2712 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2713 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2714 | fetch registers and its stack? */ |
c5aa993b | 2715 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2716 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2717 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2718 | the process. */ |
c906108c SS |
2719 | |
2720 | static int | |
fba45db2 KB |
2721 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2722 | struct gdb_ext_thread_info *info) | |
c906108c | 2723 | { |
d01949b6 | 2724 | struct remote_state *rs = get_remote_state (); |
c906108c | 2725 | int mask, length; |
cfd77fa1 | 2726 | int tag; |
c906108c | 2727 | threadref ref; |
6d820c5c | 2728 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2729 | int retval = 1; |
2730 | ||
23860348 | 2731 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2732 | info->active = 0; |
2733 | info->display[0] = '\0'; | |
2734 | info->shortname[0] = '\0'; | |
2735 | info->more_display[0] = '\0'; | |
2736 | ||
23860348 MS |
2737 | /* Assume the characters indicating the packet type have been |
2738 | stripped. */ | |
c906108c SS |
2739 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2740 | pkt = unpack_threadid (pkt, &ref); | |
2741 | ||
2742 | if (mask == 0) | |
8a3fe4f8 | 2743 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2744 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2745 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2746 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2747 | return 0; |
2748 | } | |
2749 | copy_threadref (&info->threadid, &ref); | |
2750 | ||
23860348 | 2751 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2752 | |
23860348 MS |
2753 | /* Packets are terminated with nulls. */ |
2754 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2755 | { |
2756 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2757 | pkt = unpack_byte (pkt, &length); /* length */ |
2758 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2759 | { |
8a3fe4f8 | 2760 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2761 | retval = 0; |
2762 | break; | |
2763 | } | |
2764 | if (tag == TAG_THREADID) | |
2765 | { | |
2766 | if (length != 16) | |
2767 | { | |
8a3fe4f8 | 2768 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2769 | retval = 0; |
2770 | break; | |
2771 | } | |
2772 | pkt = unpack_threadid (pkt, &ref); | |
2773 | mask = mask & ~TAG_THREADID; | |
2774 | continue; | |
2775 | } | |
2776 | if (tag == TAG_EXISTS) | |
2777 | { | |
2778 | info->active = stub_unpack_int (pkt, length); | |
2779 | pkt += length; | |
2780 | mask = mask & ~(TAG_EXISTS); | |
2781 | if (length > 8) | |
2782 | { | |
8a3fe4f8 | 2783 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2784 | retval = 0; |
2785 | break; | |
2786 | } | |
2787 | continue; | |
2788 | } | |
2789 | if (tag == TAG_THREADNAME) | |
2790 | { | |
2791 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2792 | mask = mask & ~TAG_THREADNAME; | |
2793 | continue; | |
2794 | } | |
2795 | if (tag == TAG_DISPLAY) | |
2796 | { | |
2797 | pkt = unpack_string (pkt, &info->display[0], length); | |
2798 | mask = mask & ~TAG_DISPLAY; | |
2799 | continue; | |
2800 | } | |
2801 | if (tag == TAG_MOREDISPLAY) | |
2802 | { | |
2803 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2804 | mask = mask & ~TAG_MOREDISPLAY; | |
2805 | continue; | |
2806 | } | |
8a3fe4f8 | 2807 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2808 | break; /* Not a tag we know about. */ |
c906108c SS |
2809 | } |
2810 | return retval; | |
2811 | } | |
2812 | ||
2813 | static int | |
fba45db2 KB |
2814 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2815 | struct gdb_ext_thread_info *info) | |
c906108c | 2816 | { |
d01949b6 | 2817 | struct remote_state *rs = get_remote_state (); |
c906108c | 2818 | int result; |
c906108c | 2819 | |
2e9f7625 DJ |
2820 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2821 | putpkt (rs->buf); | |
6d820c5c | 2822 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2823 | |
2824 | if (rs->buf[0] == '\0') | |
2825 | return 0; | |
2826 | ||
2e9f7625 | 2827 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2828 | threadid, info); |
c906108c SS |
2829 | return result; |
2830 | } | |
2831 | ||
c906108c SS |
2832 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2833 | ||
2834 | static char * | |
fba45db2 KB |
2835 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2836 | threadref *nextthread) | |
c906108c SS |
2837 | { |
2838 | *pkt++ = 'q'; /* info query packet */ | |
2839 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2840 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2841 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2842 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2843 | *pkt = '\0'; | |
2844 | return pkt; | |
2845 | } | |
2846 | ||
2847 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2848 | ||
2849 | static int | |
fba45db2 KB |
2850 | parse_threadlist_response (char *pkt, int result_limit, |
2851 | threadref *original_echo, threadref *resultlist, | |
2852 | int *doneflag) | |
c906108c | 2853 | { |
d01949b6 | 2854 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2855 | char *limit; |
2856 | int count, resultcount, done; | |
2857 | ||
2858 | resultcount = 0; | |
2859 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2860 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2861 | /* done parse past here */ |
c906108c SS |
2862 | pkt = unpack_byte (pkt, &count); /* count field */ |
2863 | pkt = unpack_nibble (pkt, &done); | |
2864 | /* The first threadid is the argument threadid. */ | |
2865 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2866 | while ((count-- > 0) && (pkt < limit)) | |
2867 | { | |
2868 | pkt = unpack_threadid (pkt, resultlist++); | |
2869 | if (resultcount++ >= result_limit) | |
2870 | break; | |
2871 | } | |
2872 | if (doneflag) | |
2873 | *doneflag = done; | |
2874 | return resultcount; | |
2875 | } | |
2876 | ||
6dc54d91 PA |
2877 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2878 | qL packet is not supported, 0 on error and 1 on success. */ | |
2879 | ||
c906108c | 2880 | static int |
fba45db2 KB |
2881 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2882 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2883 | { |
d01949b6 | 2884 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2885 | int result = 1; |
2886 | ||
23860348 | 2887 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2888 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2889 | >= get_remote_packet_size ()) | |
ea9c271d | 2890 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2891 | |
6d820c5c DJ |
2892 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2893 | putpkt (rs->buf); | |
2894 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2895 | if (*rs->buf == '\0') |
6dc54d91 PA |
2896 | { |
2897 | /* Packet not supported. */ | |
2898 | return -1; | |
2899 | } | |
2900 | ||
2901 | *result_count = | |
2902 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2903 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2904 | |
0d031856 | 2905 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2906 | { |
23860348 MS |
2907 | /* FIXME: This is a good reason to drop the packet. */ |
2908 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2909 | /* Possabilities : |
2910 | retransmit immediatly - race conditions | |
2911 | retransmit after timeout - yes | |
2912 | exit | |
2913 | wait for packet, then exit | |
2914 | */ | |
8a3fe4f8 | 2915 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2916 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2917 | } |
2918 | if (*result_count <= 0) | |
2919 | { | |
2920 | if (*done != 1) | |
2921 | { | |
8a3fe4f8 | 2922 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2923 | result = 0; |
2924 | } | |
2925 | return result; /* break; */ | |
2926 | } | |
2927 | if (*result_count > result_limit) | |
2928 | { | |
2929 | *result_count = 0; | |
8a3fe4f8 | 2930 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2931 | return 0; |
2932 | } | |
2933 | return result; | |
2934 | } | |
2935 | ||
6dc54d91 PA |
2936 | /* Fetch the list of remote threads, with the qL packet, and call |
2937 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2938 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2939 | STEPFUNCTION returns false. If the packet is not supported, | |
2940 | returns -1. */ | |
c906108c | 2941 | |
c906108c | 2942 | static int |
fba45db2 KB |
2943 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2944 | int looplimit) | |
c906108c | 2945 | { |
0d031856 | 2946 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2947 | int done, i, result_count; |
2948 | int startflag = 1; | |
2949 | int result = 1; | |
2950 | int loopcount = 0; | |
c906108c SS |
2951 | |
2952 | done = 0; | |
2953 | while (!done) | |
2954 | { | |
2955 | if (loopcount++ > looplimit) | |
2956 | { | |
2957 | result = 0; | |
8a3fe4f8 | 2958 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2959 | break; |
2960 | } | |
6dc54d91 PA |
2961 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2962 | MAXTHREADLISTRESULTS, | |
2963 | &done, &result_count, | |
2964 | rs->resultthreadlist); | |
2965 | if (result <= 0) | |
2966 | break; | |
23860348 | 2967 | /* Clear for later iterations. */ |
c906108c SS |
2968 | startflag = 0; |
2969 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2970 | if (result_count >= 1) | |
0d031856 TT |
2971 | copy_threadref (&rs->nextthread, |
2972 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2973 | i = 0; |
2974 | while (result_count--) | |
6dc54d91 PA |
2975 | { |
2976 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2977 | { | |
2978 | result = 0; | |
2979 | break; | |
2980 | } | |
2981 | } | |
c906108c SS |
2982 | } |
2983 | return result; | |
2984 | } | |
2985 | ||
6dc54d91 PA |
2986 | /* A thread found on the remote target. */ |
2987 | ||
2988 | typedef struct thread_item | |
2989 | { | |
2990 | /* The thread's PTID. */ | |
2991 | ptid_t ptid; | |
2992 | ||
2993 | /* The thread's extra info. May be NULL. */ | |
2994 | char *extra; | |
2995 | ||
79efa585 SM |
2996 | /* The thread's name. May be NULL. */ |
2997 | char *name; | |
2998 | ||
6dc54d91 PA |
2999 | /* The core the thread was running on. -1 if not known. */ |
3000 | int core; | |
f6327dcb KB |
3001 | |
3002 | /* The thread handle associated with the thread. */ | |
3003 | gdb::byte_vector *thread_handle; | |
3004 | ||
6dc54d91 PA |
3005 | } thread_item_t; |
3006 | DEF_VEC_O(thread_item_t); | |
3007 | ||
3008 | /* Context passed around to the various methods listing remote | |
3009 | threads. As new threads are found, they're added to the ITEMS | |
3010 | vector. */ | |
3011 | ||
3012 | struct threads_listing_context | |
3013 | { | |
3014 | /* The threads found on the remote target. */ | |
3015 | VEC (thread_item_t) *items; | |
3016 | }; | |
3017 | ||
80134cf5 PA |
3018 | /* Discard the contents of the constructed thread listing context. */ |
3019 | ||
3020 | static void | |
3021 | clear_threads_listing_context (void *p) | |
3022 | { | |
19ba03f4 SM |
3023 | struct threads_listing_context *context |
3024 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
3025 | int i; |
3026 | struct thread_item *item; | |
3027 | ||
3028 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
79efa585 SM |
3029 | { |
3030 | xfree (item->extra); | |
3031 | xfree (item->name); | |
f6327dcb | 3032 | delete item->thread_handle; |
79efa585 | 3033 | } |
80134cf5 PA |
3034 | |
3035 | VEC_free (thread_item_t, context->items); | |
3036 | } | |
3037 | ||
cbb8991c DB |
3038 | /* Remove the thread specified as the related_pid field of WS |
3039 | from the CONTEXT list. */ | |
3040 | ||
3041 | static void | |
3042 | threads_listing_context_remove (struct target_waitstatus *ws, | |
3043 | struct threads_listing_context *context) | |
3044 | { | |
3045 | struct thread_item *item; | |
3046 | int i; | |
3047 | ptid_t child_ptid = ws->value.related_pid; | |
3048 | ||
3049 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
3050 | { | |
3051 | if (ptid_equal (item->ptid, child_ptid)) | |
3052 | { | |
3053 | VEC_ordered_remove (thread_item_t, context->items, i); | |
3054 | break; | |
3055 | } | |
3056 | } | |
3057 | } | |
3058 | ||
c906108c | 3059 | static int |
6dc54d91 | 3060 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3061 | { |
19ba03f4 SM |
3062 | struct threads_listing_context *context |
3063 | = (struct threads_listing_context *) data; | |
6dc54d91 | 3064 | struct thread_item item; |
79d7f229 | 3065 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 3066 | |
6dc54d91 PA |
3067 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
3068 | item.core = -1; | |
2e3b657e | 3069 | item.name = NULL; |
6dc54d91 | 3070 | item.extra = NULL; |
f6327dcb | 3071 | item.thread_handle = nullptr; |
6dc54d91 PA |
3072 | |
3073 | VEC_safe_push (thread_item_t, context->items, &item); | |
3074 | ||
c906108c SS |
3075 | return 1; /* continue iterator */ |
3076 | } | |
3077 | ||
3078 | #define CRAZY_MAX_THREADS 1000 | |
3079 | ||
39f77062 KB |
3080 | static ptid_t |
3081 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3082 | { |
d01949b6 | 3083 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3084 | |
3085 | putpkt ("qC"); | |
6d820c5c | 3086 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3087 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3088 | { |
256642e8 | 3089 | const char *obuf; |
c9f35b34 KB |
3090 | ptid_t result; |
3091 | ||
3092 | result = read_ptid (&rs->buf[2], &obuf); | |
3093 | if (*obuf != '\0' && remote_debug) | |
3094 | fprintf_unfiltered (gdb_stdlog, | |
3095 | "warning: garbage in qC reply\n"); | |
3096 | ||
3097 | return result; | |
3098 | } | |
c906108c SS |
3099 | else |
3100 | return oldpid; | |
3101 | } | |
3102 | ||
6dc54d91 | 3103 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3104 | |
6dc54d91 PA |
3105 | static int |
3106 | remote_get_threads_with_ql (struct target_ops *ops, | |
3107 | struct threads_listing_context *context) | |
c906108c | 3108 | { |
6dc54d91 PA |
3109 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3110 | CRAZY_MAX_THREADS) >= 0) | |
3111 | return 1; | |
3112 | ||
3113 | return 0; | |
c906108c SS |
3114 | } |
3115 | ||
dc146f7c VP |
3116 | #if defined(HAVE_LIBEXPAT) |
3117 | ||
dc146f7c VP |
3118 | static void |
3119 | start_thread (struct gdb_xml_parser *parser, | |
3120 | const struct gdb_xml_element *element, | |
3121 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
3122 | { | |
19ba03f4 SM |
3123 | struct threads_listing_context *data |
3124 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3125 | |
3126 | struct thread_item item; | |
3127 | char *id; | |
3d2c1d41 | 3128 | struct gdb_xml_value *attr; |
dc146f7c | 3129 | |
19ba03f4 | 3130 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
3131 | item.ptid = read_ptid (id, NULL); |
3132 | ||
3d2c1d41 PA |
3133 | attr = xml_find_attribute (attributes, "core"); |
3134 | if (attr != NULL) | |
3135 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
3136 | else |
3137 | item.core = -1; | |
3138 | ||
79efa585 | 3139 | attr = xml_find_attribute (attributes, "name"); |
e1961661 | 3140 | item.name = attr != NULL ? xstrdup ((const char *) attr->value) : NULL; |
79efa585 | 3141 | |
f6327dcb KB |
3142 | attr = xml_find_attribute (attributes, "handle"); |
3143 | if (attr != NULL) | |
3144 | { | |
3145 | item.thread_handle = new gdb::byte_vector | |
3146 | (strlen ((const char *) attr->value) / 2); | |
3147 | hex2bin ((const char *) attr->value, item.thread_handle->data (), | |
3148 | item.thread_handle->size ()); | |
3149 | } | |
3150 | else | |
3151 | item.thread_handle = nullptr; | |
3152 | ||
dc146f7c VP |
3153 | item.extra = 0; |
3154 | ||
3155 | VEC_safe_push (thread_item_t, data->items, &item); | |
3156 | } | |
3157 | ||
3158 | static void | |
3159 | end_thread (struct gdb_xml_parser *parser, | |
3160 | const struct gdb_xml_element *element, | |
3161 | void *user_data, const char *body_text) | |
3162 | { | |
19ba03f4 SM |
3163 | struct threads_listing_context *data |
3164 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3165 | |
3166 | if (body_text && *body_text) | |
2ae2a0b7 | 3167 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
3168 | } |
3169 | ||
3170 | const struct gdb_xml_attribute thread_attributes[] = { | |
3171 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3172 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3173 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3174 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3175 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3176 | }; | |
3177 | ||
3178 | const struct gdb_xml_element thread_children[] = { | |
3179 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3180 | }; | |
3181 | ||
3182 | const struct gdb_xml_element threads_children[] = { | |
3183 | { "thread", thread_attributes, thread_children, | |
3184 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3185 | start_thread, end_thread }, | |
3186 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3187 | }; | |
3188 | ||
3189 | const struct gdb_xml_element threads_elements[] = { | |
3190 | { "threads", NULL, threads_children, | |
3191 | GDB_XML_EF_NONE, NULL, NULL }, | |
3192 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3193 | }; | |
3194 | ||
3195 | #endif | |
3196 | ||
6dc54d91 | 3197 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3198 | |
6dc54d91 PA |
3199 | static int |
3200 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3201 | struct threads_listing_context *context) | |
0f71a2f6 | 3202 | { |
dc146f7c | 3203 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3204 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3205 | { |
b7b030ad TT |
3206 | gdb::unique_xmalloc_ptr<char> xml |
3207 | = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); | |
efc0eabd | 3208 | |
6dc54d91 | 3209 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3210 | { |
6dc54d91 | 3211 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
b7b030ad | 3212 | threads_elements, xml.get (), context); |
dc146f7c VP |
3213 | } |
3214 | ||
6dc54d91 | 3215 | return 1; |
dc146f7c VP |
3216 | } |
3217 | #endif | |
3218 | ||
6dc54d91 PA |
3219 | return 0; |
3220 | } | |
3221 | ||
3222 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3223 | ||
3224 | static int | |
3225 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3226 | struct threads_listing_context *context) | |
3227 | { | |
3228 | struct remote_state *rs = get_remote_state (); | |
3229 | ||
b80fafe3 | 3230 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3231 | { |
256642e8 | 3232 | const char *bufp; |
6dc54d91 | 3233 | |
9d1f7ab2 | 3234 | putpkt ("qfThreadInfo"); |
6d820c5c | 3235 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3236 | bufp = rs->buf; |
9d1f7ab2 | 3237 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3238 | { |
9d1f7ab2 MS |
3239 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3240 | { | |
3241 | do | |
3242 | { | |
6dc54d91 PA |
3243 | struct thread_item item; |
3244 | ||
3245 | item.ptid = read_ptid (bufp, &bufp); | |
3246 | item.core = -1; | |
2e3b657e | 3247 | item.name = NULL; |
6dc54d91 | 3248 | item.extra = NULL; |
f6327dcb | 3249 | item.thread_handle = nullptr; |
6dc54d91 PA |
3250 | |
3251 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3252 | } |
3253 | while (*bufp++ == ','); /* comma-separated list */ | |
3254 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3255 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3256 | bufp = rs->buf; |
9d1f7ab2 | 3257 | } |
6dc54d91 PA |
3258 | return 1; |
3259 | } | |
3260 | else | |
3261 | { | |
3262 | /* Packet not recognized. */ | |
3263 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3264 | } |
3265 | } | |
3266 | ||
6dc54d91 PA |
3267 | return 0; |
3268 | } | |
3269 | ||
e8032dde | 3270 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3271 | targets. */ |
3272 | ||
3273 | static void | |
e8032dde | 3274 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 | 3275 | { |
6dc54d91 PA |
3276 | struct threads_listing_context context; |
3277 | struct cleanup *old_chain; | |
ab970af1 | 3278 | int got_list = 0; |
e8032dde | 3279 | |
6dc54d91 PA |
3280 | context.items = NULL; |
3281 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3282 | ||
3283 | /* We have a few different mechanisms to fetch the thread list. Try | |
3284 | them all, starting with the most preferred one first, falling | |
3285 | back to older methods. */ | |
3286 | if (remote_get_threads_with_qxfer (ops, &context) | |
3287 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3288 | || remote_get_threads_with_ql (ops, &context)) | |
3289 | { | |
3290 | int i; | |
3291 | struct thread_item *item; | |
ab970af1 PA |
3292 | struct thread_info *tp, *tmp; |
3293 | ||
3294 | got_list = 1; | |
3295 | ||
7d1a114c PA |
3296 | if (VEC_empty (thread_item_t, context.items) |
3297 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3298 | { | |
3299 | /* Some targets don't really support threads, but still | |
3300 | reply an (empty) thread list in response to the thread | |
3301 | listing packets, instead of replying "packet not | |
3302 | supported". Exit early so we don't delete the main | |
3303 | thread. */ | |
3304 | do_cleanups (old_chain); | |
3305 | return; | |
3306 | } | |
3307 | ||
ab970af1 PA |
3308 | /* CONTEXT now holds the current thread list on the remote |
3309 | target end. Delete GDB-side threads no longer found on the | |
3310 | target. */ | |
8a06aea7 | 3311 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3312 | { |
ab970af1 PA |
3313 | for (i = 0; |
3314 | VEC_iterate (thread_item_t, context.items, i, item); | |
3315 | ++i) | |
3316 | { | |
3317 | if (ptid_equal (item->ptid, tp->ptid)) | |
3318 | break; | |
3319 | } | |
3320 | ||
3321 | if (i == VEC_length (thread_item_t, context.items)) | |
3322 | { | |
3323 | /* Not found. */ | |
3324 | delete_thread (tp->ptid); | |
3325 | } | |
cbb8991c DB |
3326 | } |
3327 | ||
3328 | /* Remove any unreported fork child threads from CONTEXT so | |
3329 | that we don't interfere with follow fork, which is where | |
3330 | creation of such threads is handled. */ | |
3331 | remove_new_fork_children (&context); | |
74531fed | 3332 | |
ab970af1 | 3333 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3334 | for (i = 0; |
3335 | VEC_iterate (thread_item_t, context.items, i, item); | |
3336 | ++i) | |
3337 | { | |
3338 | if (!ptid_equal (item->ptid, null_ptid)) | |
3339 | { | |
3340 | struct private_thread_info *info; | |
3341 | /* In non-stop mode, we assume new found threads are | |
0d5b594f PA |
3342 | executing until proven otherwise with a stop reply. |
3343 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3344 | stopped. */ |
0d5b594f | 3345 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3346 | |
0d5b594f | 3347 | remote_notice_new_inferior (item->ptid, executing); |
6dc54d91 | 3348 | |
85ad3aaf | 3349 | info = get_private_info_ptid (item->ptid); |
6dc54d91 PA |
3350 | info->core = item->core; |
3351 | info->extra = item->extra; | |
3352 | item->extra = NULL; | |
79efa585 SM |
3353 | info->name = item->name; |
3354 | item->name = NULL; | |
f6327dcb KB |
3355 | info->thread_handle = item->thread_handle; |
3356 | item->thread_handle = nullptr; | |
6dc54d91 PA |
3357 | } |
3358 | } | |
3359 | } | |
3360 | ||
ab970af1 PA |
3361 | if (!got_list) |
3362 | { | |
3363 | /* If no thread listing method is supported, then query whether | |
3364 | each known thread is alive, one by one, with the T packet. | |
3365 | If the target doesn't support threads at all, then this is a | |
3366 | no-op. See remote_thread_alive. */ | |
3367 | prune_threads (); | |
3368 | } | |
3369 | ||
6dc54d91 | 3370 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3371 | } |
3372 | ||
802188a7 | 3373 | /* |
9d1f7ab2 MS |
3374 | * Collect a descriptive string about the given thread. |
3375 | * The target may say anything it wants to about the thread | |
3376 | * (typically info about its blocked / runnable state, name, etc.). | |
3377 | * This string will appear in the info threads display. | |
802188a7 | 3378 | * |
9d1f7ab2 MS |
3379 | * Optional: targets are not required to implement this function. |
3380 | */ | |
3381 | ||
7a114964 | 3382 | static const char * |
c15906d8 | 3383 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3384 | { |
d01949b6 | 3385 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3386 | int result; |
3387 | int set; | |
3388 | threadref id; | |
3389 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3390 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3391 | int n = 0; /* position in display_buf */ |
3392 | ||
5d93a237 | 3393 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3394 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3395 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3396 | |
60e569b9 | 3397 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3398 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3399 | /* This is the main thread which was added by GDB. The remote |
3400 | server doesn't know about it. */ | |
3401 | return NULL; | |
3402 | ||
4082afcc | 3403 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3404 | { |
3405 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3406 | |
fe978cb0 PA |
3407 | if (info && info->priv) |
3408 | return info->priv->extra; | |
dc146f7c VP |
3409 | else |
3410 | return NULL; | |
3411 | } | |
3412 | ||
b80fafe3 | 3413 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3414 | { |
82f73884 PA |
3415 | char *b = rs->buf; |
3416 | char *endb = rs->buf + get_remote_packet_size (); | |
3417 | ||
3418 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3419 | b += strlen (b); | |
3420 | write_ptid (b, endb, tp->ptid); | |
3421 | ||
2e9f7625 | 3422 | putpkt (rs->buf); |
6d820c5c | 3423 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3424 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3425 | { |
325fac50 | 3426 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3427 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3428 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3429 | return display_buf; |
3430 | } | |
0f71a2f6 | 3431 | } |
9d1f7ab2 MS |
3432 | |
3433 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3434 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3435 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3436 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3437 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3438 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3439 | if (threadinfo.active) | |
0f71a2f6 | 3440 | { |
9d1f7ab2 | 3441 | if (*threadinfo.shortname) |
2bc416ba | 3442 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3443 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3444 | if (*threadinfo.display) |
2bc416ba | 3445 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3446 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3447 | if (*threadinfo.more_display) |
2bc416ba | 3448 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3449 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3450 | |
3451 | if (n > 0) | |
c5aa993b | 3452 | { |
23860348 | 3453 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3454 | if (',' == display_buf[n-1]) |
3455 | display_buf[n-1] = ' '; | |
3456 | return display_buf; | |
c5aa993b | 3457 | } |
0f71a2f6 | 3458 | } |
9d1f7ab2 | 3459 | return NULL; |
0f71a2f6 | 3460 | } |
c906108c | 3461 | \f |
c5aa993b | 3462 | |
0fb4aa4b | 3463 | static int |
61fc905d | 3464 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3465 | struct static_tracepoint_marker *marker) |
3466 | { | |
3467 | struct remote_state *rs = get_remote_state (); | |
3468 | char *p = rs->buf; | |
3469 | ||
bba74b36 | 3470 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3471 | p += strlen (p); |
3472 | p += hexnumstr (p, addr); | |
3473 | putpkt (rs->buf); | |
3474 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3475 | p = rs->buf; | |
3476 | ||
3477 | if (*p == 'E') | |
3478 | error (_("Remote failure reply: %s"), p); | |
3479 | ||
3480 | if (*p++ == 'm') | |
3481 | { | |
256642e8 | 3482 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
0fb4aa4b PA |
3483 | return 1; |
3484 | } | |
3485 | ||
3486 | return 0; | |
3487 | } | |
3488 | ||
0fb4aa4b | 3489 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3490 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3491 | const char *strid) | |
0fb4aa4b PA |
3492 | { |
3493 | struct remote_state *rs = get_remote_state (); | |
3494 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3495 | struct static_tracepoint_marker *marker = NULL; | |
3496 | struct cleanup *old_chain; | |
256642e8 | 3497 | const char *p; |
0fb4aa4b PA |
3498 | |
3499 | /* Ask for a first packet of static tracepoint marker | |
3500 | definition. */ | |
3501 | putpkt ("qTfSTM"); | |
3502 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3503 | p = rs->buf; | |
3504 | if (*p == 'E') | |
3505 | error (_("Remote failure reply: %s"), p); | |
3506 | ||
3507 | old_chain = make_cleanup (free_current_marker, &marker); | |
3508 | ||
3509 | while (*p++ == 'm') | |
3510 | { | |
3511 | if (marker == NULL) | |
3512 | marker = XCNEW (struct static_tracepoint_marker); | |
3513 | ||
3514 | do | |
3515 | { | |
3516 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3517 | ||
3518 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3519 | { | |
3520 | VEC_safe_push (static_tracepoint_marker_p, | |
3521 | markers, marker); | |
3522 | marker = NULL; | |
3523 | } | |
3524 | else | |
3525 | { | |
3526 | release_static_tracepoint_marker (marker); | |
3527 | memset (marker, 0, sizeof (*marker)); | |
3528 | } | |
3529 | } | |
3530 | while (*p++ == ','); /* comma-separated list */ | |
3531 | /* Ask for another packet of static tracepoint definition. */ | |
3532 | putpkt ("qTsSTM"); | |
3533 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3534 | p = rs->buf; | |
3535 | } | |
3536 | ||
3537 | do_cleanups (old_chain); | |
3538 | return markers; | |
3539 | } | |
3540 | ||
3541 | \f | |
10760264 JB |
3542 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3543 | ||
3544 | static ptid_t | |
1e6b91a4 | 3545 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3546 | { |
ba348170 | 3547 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3548 | } |
3549 | \f | |
3550 | ||
24b06219 | 3551 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3552 | |
3553 | static void | |
fba45db2 | 3554 | extended_remote_restart (void) |
c906108c | 3555 | { |
d01949b6 | 3556 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3557 | |
3558 | /* Send the restart command; for reasons I don't understand the | |
3559 | remote side really expects a number after the "R". */ | |
ea9c271d | 3560 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3561 | putpkt (rs->buf); |
c906108c | 3562 | |
ad9a8f3f | 3563 | remote_fileio_reset (); |
c906108c SS |
3564 | } |
3565 | \f | |
3566 | /* Clean up connection to a remote debugger. */ | |
3567 | ||
c906108c | 3568 | static void |
de90e03d | 3569 | remote_close (struct target_ops *self) |
c906108c | 3570 | { |
5d93a237 TT |
3571 | struct remote_state *rs = get_remote_state (); |
3572 | ||
3573 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3574 | return; /* already closed */ |
3575 | ||
048094ac | 3576 | /* Make sure we leave stdin registered in the event loop. */ |
e3594fd1 | 3577 | remote_terminal_ours (self); |
ce5ce7ed | 3578 | |
5d93a237 TT |
3579 | serial_close (rs->remote_desc); |
3580 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3581 | |
3582 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3583 | of all the inferiors and their threads we were controlling. |
3584 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3585 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3586 | inferior_ptid = null_ptid; |
f67fd822 | 3587 | discard_all_inferiors (); |
ce5ce7ed | 3588 | |
f48ff2a7 YQ |
3589 | /* We are closing the remote target, so we should discard |
3590 | everything of this target. */ | |
bcc75809 | 3591 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3592 | |
3593 | if (remote_async_inferior_event_token) | |
3594 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3595 | |
5965e028 | 3596 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3597 | |
3598 | trace_reset_local_state (); | |
c906108c SS |
3599 | } |
3600 | ||
23860348 | 3601 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3602 | |
3603 | static void | |
fba45db2 | 3604 | get_offsets (void) |
c906108c | 3605 | { |
d01949b6 | 3606 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3607 | char *buf; |
085dd6e6 | 3608 | char *ptr; |
31d99776 DJ |
3609 | int lose, num_segments = 0, do_sections, do_segments; |
3610 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3611 | struct section_offsets *offs; |
31d99776 DJ |
3612 | struct symfile_segment_data *data; |
3613 | ||
3614 | if (symfile_objfile == NULL) | |
3615 | return; | |
c906108c SS |
3616 | |
3617 | putpkt ("qOffsets"); | |
6d820c5c | 3618 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3619 | buf = rs->buf; |
c906108c SS |
3620 | |
3621 | if (buf[0] == '\000') | |
3622 | return; /* Return silently. Stub doesn't support | |
23860348 | 3623 | this command. */ |
c906108c SS |
3624 | if (buf[0] == 'E') |
3625 | { | |
8a3fe4f8 | 3626 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3627 | return; |
3628 | } | |
3629 | ||
3630 | /* Pick up each field in turn. This used to be done with scanf, but | |
3631 | scanf will make trouble if CORE_ADDR size doesn't match | |
3632 | conversion directives correctly. The following code will work | |
3633 | with any size of CORE_ADDR. */ | |
3634 | text_addr = data_addr = bss_addr = 0; | |
3635 | ptr = buf; | |
3636 | lose = 0; | |
3637 | ||
61012eef | 3638 | if (startswith (ptr, "Text=")) |
c906108c SS |
3639 | { |
3640 | ptr += 5; | |
3641 | /* Don't use strtol, could lose on big values. */ | |
3642 | while (*ptr && *ptr != ';') | |
3643 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3644 | |
61012eef | 3645 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3646 | { |
3647 | ptr += 6; | |
3648 | while (*ptr && *ptr != ';') | |
3649 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3650 | } | |
3651 | else | |
3652 | lose = 1; | |
3653 | ||
61012eef | 3654 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3655 | { |
3656 | ptr += 5; | |
3657 | while (*ptr && *ptr != ';') | |
3658 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3659 | |
31d99776 DJ |
3660 | if (bss_addr != data_addr) |
3661 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3662 | } | |
3663 | else | |
3664 | lose = 1; | |
3665 | } | |
61012eef | 3666 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3667 | { |
31d99776 DJ |
3668 | ptr += 8; |
3669 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3670 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3671 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3672 | num_segments = 1; | |
3673 | ||
61012eef | 3674 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3675 | { |
3676 | ptr += 9; | |
3677 | while (*ptr && *ptr != ';') | |
3678 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3679 | num_segments++; | |
3680 | } | |
c906108c SS |
3681 | } |
3682 | else | |
3683 | lose = 1; | |
3684 | ||
3685 | if (lose) | |
8a3fe4f8 | 3686 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3687 | else if (*ptr != '\0') |
3688 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3689 | |
802188a7 | 3690 | offs = ((struct section_offsets *) |
a39a16c4 | 3691 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3692 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3693 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3694 | |
31d99776 DJ |
3695 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3696 | do_segments = (data != NULL); | |
3697 | do_sections = num_segments == 0; | |
c906108c | 3698 | |
28c32713 | 3699 | if (num_segments > 0) |
31d99776 | 3700 | { |
31d99776 DJ |
3701 | segments[0] = text_addr; |
3702 | segments[1] = data_addr; | |
3703 | } | |
28c32713 JB |
3704 | /* If we have two segments, we can still try to relocate everything |
3705 | by assuming that the .text and .data offsets apply to the whole | |
3706 | text and data segments. Convert the offsets given in the packet | |
3707 | to base addresses for symfile_map_offsets_to_segments. */ | |
3708 | else if (data && data->num_segments == 2) | |
3709 | { | |
3710 | segments[0] = data->segment_bases[0] + text_addr; | |
3711 | segments[1] = data->segment_bases[1] + data_addr; | |
3712 | num_segments = 2; | |
3713 | } | |
8d385431 DJ |
3714 | /* If the object file has only one segment, assume that it is text |
3715 | rather than data; main programs with no writable data are rare, | |
3716 | but programs with no code are useless. Of course the code might | |
3717 | have ended up in the data segment... to detect that we would need | |
3718 | the permissions here. */ | |
3719 | else if (data && data->num_segments == 1) | |
3720 | { | |
3721 | segments[0] = data->segment_bases[0] + text_addr; | |
3722 | num_segments = 1; | |
3723 | } | |
28c32713 JB |
3724 | /* There's no way to relocate by segment. */ |
3725 | else | |
3726 | do_segments = 0; | |
31d99776 DJ |
3727 | |
3728 | if (do_segments) | |
3729 | { | |
3730 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3731 | offs, num_segments, segments); | |
3732 | ||
3733 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3734 | error (_("Can not handle qOffsets TextSeg " |
3735 | "response with this symbol file")); | |
31d99776 DJ |
3736 | |
3737 | if (ret > 0) | |
3738 | do_sections = 0; | |
3739 | } | |
c906108c | 3740 | |
9ef895d6 DJ |
3741 | if (data) |
3742 | free_symfile_segment_data (data); | |
31d99776 DJ |
3743 | |
3744 | if (do_sections) | |
3745 | { | |
3746 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3747 | ||
3e43a32a MS |
3748 | /* This is a temporary kludge to force data and bss to use the |
3749 | same offsets because that's what nlmconv does now. The real | |
3750 | solution requires changes to the stub and remote.c that I | |
3751 | don't have time to do right now. */ | |
31d99776 DJ |
3752 | |
3753 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3754 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3755 | } | |
c906108c SS |
3756 | |
3757 | objfile_relocate (symfile_objfile, offs); | |
3758 | } | |
3759 | ||
9a7071a8 JB |
3760 | /* Send interrupt_sequence to remote target. */ |
3761 | static void | |
eeae04df | 3762 | send_interrupt_sequence (void) |
9a7071a8 | 3763 | { |
5d93a237 TT |
3764 | struct remote_state *rs = get_remote_state (); |
3765 | ||
9a7071a8 | 3766 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3767 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3768 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3769 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3770 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3771 | { | |
5d93a237 | 3772 | serial_send_break (rs->remote_desc); |
c33e31fd | 3773 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3774 | } |
3775 | else | |
3776 | internal_error (__FILE__, __LINE__, | |
3777 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3778 | interrupt_sequence_mode); | |
3779 | } | |
3780 | ||
3405876a PA |
3781 | |
3782 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3783 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3784 | ||
3785 | static ptid_t | |
3786 | stop_reply_extract_thread (char *stop_reply) | |
3787 | { | |
3788 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3789 | { | |
256642e8 | 3790 | const char *p; |
3405876a PA |
3791 | |
3792 | /* Txx r:val ; r:val (...) */ | |
3793 | p = &stop_reply[3]; | |
3794 | ||
3795 | /* Look for "register" named "thread". */ | |
3796 | while (*p != '\0') | |
3797 | { | |
256642e8 | 3798 | const char *p1; |
3405876a PA |
3799 | |
3800 | p1 = strchr (p, ':'); | |
3801 | if (p1 == NULL) | |
3802 | return null_ptid; | |
3803 | ||
3804 | if (strncmp (p, "thread", p1 - p) == 0) | |
3805 | return read_ptid (++p1, &p); | |
3806 | ||
3807 | p1 = strchr (p, ';'); | |
3808 | if (p1 == NULL) | |
3809 | return null_ptid; | |
3810 | p1++; | |
3811 | ||
3812 | p = p1; | |
3813 | } | |
3814 | } | |
3815 | ||
3816 | return null_ptid; | |
3817 | } | |
3818 | ||
b7ea362b PA |
3819 | /* Determine the remote side's current thread. If we have a stop |
3820 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3821 | "thread" register we can extract the current thread from. If not, | |
3822 | ask the remote which is the current thread with qC. The former | |
3823 | method avoids a roundtrip. */ | |
3824 | ||
3825 | static ptid_t | |
3826 | get_current_thread (char *wait_status) | |
3827 | { | |
6a49a997 | 3828 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3829 | |
3830 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3831 | the target architecture, which we haven't yet fully determined at | |
3832 | this point. */ | |
3833 | if (wait_status != NULL) | |
3834 | ptid = stop_reply_extract_thread (wait_status); | |
3835 | if (ptid_equal (ptid, null_ptid)) | |
3836 | ptid = remote_current_thread (inferior_ptid); | |
3837 | ||
3838 | return ptid; | |
3839 | } | |
3840 | ||
49c62f2e PA |
3841 | /* Query the remote target for which is the current thread/process, |
3842 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3843 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3844 | to return the current thread. |
3845 | ||
3846 | This function is called after handling the '?' or 'vRun' packets, | |
3847 | whose response is a stop reply from which we can also try | |
3848 | extracting the thread. If the target doesn't support the explicit | |
3849 | qC query, we infer the current thread from that stop reply, passed | |
3850 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3851 | |
3852 | static void | |
3405876a | 3853 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3854 | { |
3855 | struct remote_state *rs = get_remote_state (); | |
3856 | int fake_pid_p = 0; | |
49c62f2e PA |
3857 | |
3858 | inferior_ptid = null_ptid; | |
3859 | ||
b7ea362b | 3860 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 3861 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 3862 | |
87215ad1 | 3863 | if (curr_ptid != null_ptid) |
49c62f2e PA |
3864 | { |
3865 | if (!remote_multi_process_p (rs)) | |
3866 | fake_pid_p = 1; | |
49c62f2e PA |
3867 | } |
3868 | else | |
3869 | { | |
3870 | /* Without this, some commands which require an active target | |
3871 | (such as kill) won't work. This variable serves (at least) | |
3872 | double duty as both the pid of the target process (if it has | |
3873 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 3874 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
3875 | fake_pid_p = 1; |
3876 | } | |
3877 | ||
87215ad1 | 3878 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 3879 | |
87215ad1 SDJ |
3880 | /* Add the main thread and switch to it. Don't try reading |
3881 | registers yet, since we haven't fetched the target description | |
3882 | yet. */ | |
3883 | thread_info *tp = add_thread_silent (curr_ptid); | |
3884 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
3885 | } |
3886 | ||
6efcd9a8 PA |
3887 | /* Print info about a thread that was found already stopped on |
3888 | connection. */ | |
3889 | ||
3890 | static void | |
3891 | print_one_stopped_thread (struct thread_info *thread) | |
3892 | { | |
3893 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3894 | ||
3895 | switch_to_thread (thread->ptid); | |
3896 | stop_pc = get_frame_pc (get_current_frame ()); | |
3897 | set_current_sal_from_frame (get_current_frame ()); | |
3898 | ||
3899 | thread->suspend.waitstatus_pending_p = 0; | |
3900 | ||
3901 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3902 | { | |
3903 | enum gdb_signal sig = ws->value.sig; | |
3904 | ||
3905 | if (signal_print_state (sig)) | |
3906 | observer_notify_signal_received (sig); | |
3907 | } | |
3908 | observer_notify_normal_stop (NULL, 1); | |
3909 | } | |
3910 | ||
221e1a37 PA |
3911 | /* Process all initial stop replies the remote side sent in response |
3912 | to the ? packet. These indicate threads that were already stopped | |
3913 | on initial connection. We mark these threads as stopped and print | |
3914 | their current frame before giving the user the prompt. */ | |
3915 | ||
3916 | static void | |
6efcd9a8 | 3917 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3918 | { |
3919 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3920 | struct inferior *inf; |
3921 | struct thread_info *thread; | |
3922 | struct thread_info *selected = NULL; | |
3923 | struct thread_info *lowest_stopped = NULL; | |
3924 | struct thread_info *first = NULL; | |
221e1a37 PA |
3925 | |
3926 | /* Consume the initial pending events. */ | |
3927 | while (pending_stop_replies-- > 0) | |
3928 | { | |
3929 | ptid_t waiton_ptid = minus_one_ptid; | |
3930 | ptid_t event_ptid; | |
3931 | struct target_waitstatus ws; | |
3932 | int ignore_event = 0; | |
6efcd9a8 | 3933 | struct thread_info *thread; |
221e1a37 PA |
3934 | |
3935 | memset (&ws, 0, sizeof (ws)); | |
3936 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3937 | if (remote_debug) | |
3938 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3939 | ||
3940 | switch (ws.kind) | |
3941 | { | |
3942 | case TARGET_WAITKIND_IGNORE: | |
3943 | case TARGET_WAITKIND_NO_RESUMED: | |
3944 | case TARGET_WAITKIND_SIGNALLED: | |
3945 | case TARGET_WAITKIND_EXITED: | |
3946 | /* We shouldn't see these, but if we do, just ignore. */ | |
3947 | if (remote_debug) | |
3948 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3949 | ignore_event = 1; | |
3950 | break; | |
3951 | ||
3952 | case TARGET_WAITKIND_EXECD: | |
3953 | xfree (ws.value.execd_pathname); | |
3954 | break; | |
3955 | default: | |
3956 | break; | |
3957 | } | |
3958 | ||
3959 | if (ignore_event) | |
3960 | continue; | |
3961 | ||
6efcd9a8 | 3962 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3963 | |
3964 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3965 | { | |
3966 | enum gdb_signal sig = ws.value.sig; | |
3967 | ||
3968 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3969 | instead of signal 0. Suppress it. */ | |
3970 | if (sig == GDB_SIGNAL_TRAP) | |
3971 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3972 | thread->suspend.stop_signal = sig; |
3973 | ws.value.sig = sig; | |
3974 | } | |
221e1a37 | 3975 | |
6efcd9a8 PA |
3976 | thread->suspend.waitstatus = ws; |
3977 | ||
3978 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3979 | || ws.value.sig != GDB_SIGNAL_0) | |
3980 | thread->suspend.waitstatus_pending_p = 1; | |
3981 | ||
3982 | set_executing (event_ptid, 0); | |
3983 | set_running (event_ptid, 0); | |
85ad3aaf | 3984 | thread->priv->vcont_resumed = 0; |
6efcd9a8 PA |
3985 | } |
3986 | ||
3987 | /* "Notice" the new inferiors before anything related to | |
3988 | registers/memory. */ | |
3989 | ALL_INFERIORS (inf) | |
3990 | { | |
3991 | if (inf->pid == 0) | |
3992 | continue; | |
3993 | ||
3994 | inf->needs_setup = 1; | |
3995 | ||
3996 | if (non_stop) | |
3997 | { | |
3998 | thread = any_live_thread_of_process (inf->pid); | |
3999 | notice_new_inferior (thread->ptid, | |
4000 | thread->state == THREAD_RUNNING, | |
4001 | from_tty); | |
4002 | } | |
4003 | } | |
4004 | ||
4005 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4006 | records the threads' stop pc, so must be done after "noticing" | |
4007 | the inferiors. */ | |
4008 | if (!non_stop) | |
4009 | { | |
4010 | stop_all_threads (); | |
4011 | ||
4012 | /* If all threads of an inferior were already stopped, we | |
4013 | haven't setup the inferior yet. */ | |
4014 | ALL_INFERIORS (inf) | |
4015 | { | |
4016 | if (inf->pid == 0) | |
4017 | continue; | |
221e1a37 | 4018 | |
6efcd9a8 PA |
4019 | if (inf->needs_setup) |
4020 | { | |
4021 | thread = any_live_thread_of_process (inf->pid); | |
4022 | switch_to_thread_no_regs (thread); | |
4023 | setup_inferior (0); | |
4024 | } | |
4025 | } | |
221e1a37 | 4026 | } |
6efcd9a8 PA |
4027 | |
4028 | /* Now go over all threads that are stopped, and print their current | |
4029 | frame. If all-stop, then if there's a signalled thread, pick | |
4030 | that as current. */ | |
4031 | ALL_NON_EXITED_THREADS (thread) | |
4032 | { | |
6efcd9a8 PA |
4033 | if (first == NULL) |
4034 | first = thread; | |
4035 | ||
4036 | if (!non_stop) | |
4037 | set_running (thread->ptid, 0); | |
4038 | else if (thread->state != THREAD_STOPPED) | |
4039 | continue; | |
4040 | ||
6efcd9a8 PA |
4041 | if (selected == NULL |
4042 | && thread->suspend.waitstatus_pending_p) | |
4043 | selected = thread; | |
4044 | ||
5d5658a1 PA |
4045 | if (lowest_stopped == NULL |
4046 | || thread->inf->num < lowest_stopped->inf->num | |
4047 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4048 | lowest_stopped = thread; |
4049 | ||
4050 | if (non_stop) | |
4051 | print_one_stopped_thread (thread); | |
4052 | } | |
4053 | ||
4054 | /* In all-stop, we only print the status of one thread, and leave | |
4055 | others with their status pending. */ | |
4056 | if (!non_stop) | |
4057 | { | |
4058 | thread = selected; | |
4059 | if (thread == NULL) | |
4060 | thread = lowest_stopped; | |
4061 | if (thread == NULL) | |
4062 | thread = first; | |
4063 | ||
4064 | print_one_stopped_thread (thread); | |
4065 | } | |
4066 | ||
4067 | /* For "info program". */ | |
4068 | thread = inferior_thread (); | |
4069 | if (thread->state == THREAD_STOPPED) | |
4070 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4071 | } |
4072 | ||
048094ac PA |
4073 | /* Start the remote connection and sync state. */ |
4074 | ||
9cbc821d | 4075 | static void |
04bd08de | 4076 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 4077 | { |
c8d104ad PA |
4078 | struct remote_state *rs = get_remote_state (); |
4079 | struct packet_config *noack_config; | |
2d717e4f | 4080 | char *wait_status = NULL; |
8621d6a9 | 4081 | |
048094ac PA |
4082 | /* Signal other parts that we're going through the initial setup, |
4083 | and so things may not be stable yet. E.g., we don't try to | |
4084 | install tracepoints until we've relocated symbols. Also, a | |
4085 | Ctrl-C before we're connected and synced up can't interrupt the | |
4086 | target. Instead, it offers to drop the (potentially wedged) | |
4087 | connection. */ | |
4088 | rs->starting_up = 1; | |
4089 | ||
522002f9 | 4090 | QUIT; |
c906108c | 4091 | |
9a7071a8 JB |
4092 | if (interrupt_on_connect) |
4093 | send_interrupt_sequence (); | |
4094 | ||
57e12211 | 4095 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4096 | remote_serial_write ("+", 1); |
1e51243a | 4097 | |
c8d104ad PA |
4098 | /* The first packet we send to the target is the optional "supported |
4099 | packets" request. If the target can answer this, it will tell us | |
4100 | which later probes to skip. */ | |
4101 | remote_query_supported (); | |
4102 | ||
d914c394 | 4103 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4104 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4105 | remote_set_permissions (target); |
d914c394 | 4106 | |
57809e5e JK |
4107 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4108 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4109 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4110 | invalid reply and GDB would return error in | |
4111 | remote_hostio_set_filesystem, making remote files access impossible. | |
4112 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4113 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4114 | { | |
4115 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4116 | ||
4117 | putpkt (v_mustreplyempty); | |
4118 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4119 | if (strcmp (rs->buf, "OK") == 0) | |
4120 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4121 | else if (strcmp (rs->buf, "") != 0) | |
4122 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4123 | rs->buf); | |
4124 | } | |
4125 | ||
c8d104ad PA |
4126 | /* Next, we possibly activate noack mode. |
4127 | ||
4128 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4129 | enable noack mode if the stub reported a wish for it with | |
4130 | qSupported. | |
4131 | ||
4132 | If set to TRUE, then enable noack mode even if the stub didn't | |
4133 | report it in qSupported. If the stub doesn't reply OK, the | |
4134 | session ends with an error. | |
4135 | ||
4136 | If FALSE, then don't activate noack mode, regardless of what the | |
4137 | stub claimed should be the default with qSupported. */ | |
4138 | ||
4139 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4140 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4141 | { |
4142 | putpkt ("QStartNoAckMode"); | |
4143 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4144 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4145 | rs->noack_mode = 1; | |
4146 | } | |
4147 | ||
04bd08de | 4148 | if (extended_p) |
5fe04517 PA |
4149 | { |
4150 | /* Tell the remote that we are using the extended protocol. */ | |
4151 | putpkt ("!"); | |
4152 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4153 | } | |
4154 | ||
9b224c5e PA |
4155 | /* Let the target know which signals it is allowed to pass down to |
4156 | the program. */ | |
4157 | update_signals_program_target (); | |
4158 | ||
d962ef82 DJ |
4159 | /* Next, if the target can specify a description, read it. We do |
4160 | this before anything involving memory or registers. */ | |
4161 | target_find_description (); | |
4162 | ||
6c95b8df PA |
4163 | /* Next, now that we know something about the target, update the |
4164 | address spaces in the program spaces. */ | |
4165 | update_address_spaces (); | |
4166 | ||
50c71eaf PA |
4167 | /* On OSs where the list of libraries is global to all |
4168 | processes, we fetch them early. */ | |
f5656ead | 4169 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4170 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4171 | |
6efcd9a8 | 4172 | if (target_is_non_stop_p ()) |
74531fed | 4173 | { |
4082afcc | 4174 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4175 | error (_("Non-stop mode requested, but remote " |
4176 | "does not support non-stop")); | |
74531fed PA |
4177 | |
4178 | putpkt ("QNonStop:1"); | |
4179 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4180 | ||
4181 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4182 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4183 | |
4184 | /* Find about threads and processes the stub is already | |
4185 | controlling. We default to adding them in the running state. | |
4186 | The '?' query below will then tell us about which threads are | |
4187 | stopped. */ | |
e8032dde | 4188 | remote_update_thread_list (target); |
74531fed | 4189 | } |
4082afcc | 4190 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4191 | { |
4192 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4193 | Request it explicitly. */ |
74531fed PA |
4194 | putpkt ("QNonStop:0"); |
4195 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4196 | ||
4197 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4198 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4199 | } |
4200 | ||
a0743c90 YQ |
4201 | /* Upload TSVs regardless of whether the target is running or not. The |
4202 | remote stub, such as GDBserver, may have some predefined or builtin | |
4203 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4204 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4205 | { |
4206 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4207 | ||
181e3713 | 4208 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4209 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4210 | } | |
4211 | ||
2d717e4f DJ |
4212 | /* Check whether the target is running now. */ |
4213 | putpkt ("?"); | |
4214 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4215 | ||
6efcd9a8 | 4216 | if (!target_is_non_stop_p ()) |
2d717e4f | 4217 | { |
74531fed | 4218 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4219 | { |
04bd08de | 4220 | if (!extended_p) |
74531fed | 4221 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4222 | |
4223 | /* We're connected, but not running. Drop out before we | |
4224 | call start_remote. */ | |
e278ad5b | 4225 | rs->starting_up = 0; |
c35b1492 | 4226 | return; |
2d717e4f DJ |
4227 | } |
4228 | else | |
74531fed | 4229 | { |
74531fed | 4230 | /* Save the reply for later. */ |
224c3ddb | 4231 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4232 | strcpy (wait_status, rs->buf); |
4233 | } | |
4234 | ||
b7ea362b | 4235 | /* Fetch thread list. */ |
e8032dde | 4236 | target_update_thread_list (); |
b7ea362b | 4237 | |
74531fed PA |
4238 | /* Let the stub know that we want it to return the thread. */ |
4239 | set_continue_thread (minus_one_ptid); | |
4240 | ||
b7ea362b PA |
4241 | if (thread_count () == 0) |
4242 | { | |
4243 | /* Target has no concept of threads at all. GDB treats | |
4244 | non-threaded target as single-threaded; add a main | |
4245 | thread. */ | |
4246 | add_current_inferior_and_thread (wait_status); | |
4247 | } | |
4248 | else | |
4249 | { | |
4250 | /* We have thread information; select the thread the target | |
4251 | says should be current. If we're reconnecting to a | |
4252 | multi-threaded program, this will ideally be the thread | |
4253 | that last reported an event before GDB disconnected. */ | |
4254 | inferior_ptid = get_current_thread (wait_status); | |
4255 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4256 | { | |
4257 | /* Odd... The target was able to list threads, but not | |
4258 | tell us which thread was current (no "thread" | |
4259 | register in T stop reply?). Just pick the first | |
4260 | thread in the thread list then. */ | |
c9f35b34 KB |
4261 | |
4262 | if (remote_debug) | |
4263 | fprintf_unfiltered (gdb_stdlog, | |
4264 | "warning: couldn't determine remote " | |
4265 | "current thread; picking first in list.\n"); | |
4266 | ||
b7ea362b PA |
4267 | inferior_ptid = thread_list->ptid; |
4268 | } | |
4269 | } | |
74531fed | 4270 | |
6e586cc5 YQ |
4271 | /* init_wait_for_inferior should be called before get_offsets in order |
4272 | to manage `inserted' flag in bp loc in a correct state. | |
4273 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4274 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4275 | start_remote, set `inserted' flag to 1. In the initialization of | |
4276 | inferior, breakpoint_init_inferior should be called first, and then | |
4277 | breakpoint_re_set can be called. If this order is broken, state of | |
4278 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4279 | manipulation. */ | |
4280 | init_wait_for_inferior (); | |
4281 | ||
74531fed PA |
4282 | get_offsets (); /* Get text, data & bss offsets. */ |
4283 | ||
d962ef82 DJ |
4284 | /* If we could not find a description using qXfer, and we know |
4285 | how to do it some other way, try again. This is not | |
4286 | supported for non-stop; it could be, but it is tricky if | |
4287 | there are no stopped threads when we connect. */ | |
04bd08de | 4288 | if (remote_read_description_p (target) |
f5656ead | 4289 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4290 | { |
4291 | target_clear_description (); | |
4292 | target_find_description (); | |
4293 | } | |
4294 | ||
74531fed PA |
4295 | /* Use the previously fetched status. */ |
4296 | gdb_assert (wait_status != NULL); | |
4297 | strcpy (rs->buf, wait_status); | |
4298 | rs->cached_wait_status = 1; | |
4299 | ||
04bd08de | 4300 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4301 | } |
4302 | else | |
4303 | { | |
68c97600 PA |
4304 | /* Clear WFI global state. Do this before finding about new |
4305 | threads and inferiors, and setting the current inferior. | |
4306 | Otherwise we would clear the proceed status of the current | |
4307 | inferior when we want its stop_soon state to be preserved | |
4308 | (see notice_new_inferior). */ | |
4309 | init_wait_for_inferior (); | |
4310 | ||
74531fed PA |
4311 | /* In non-stop, we will either get an "OK", meaning that there |
4312 | are no stopped threads at this time; or, a regular stop | |
4313 | reply. In the latter case, there may be more than one thread | |
4314 | stopped --- we pull them all out using the vStopped | |
4315 | mechanism. */ | |
4316 | if (strcmp (rs->buf, "OK") != 0) | |
4317 | { | |
722247f1 | 4318 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4319 | |
722247f1 YQ |
4320 | /* remote_notif_get_pending_replies acks this one, and gets |
4321 | the rest out. */ | |
f48ff2a7 | 4322 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4323 | = remote_notif_parse (notif, rs->buf); |
4324 | remote_notif_get_pending_events (notif); | |
74531fed | 4325 | } |
2d717e4f | 4326 | |
74531fed PA |
4327 | if (thread_count () == 0) |
4328 | { | |
04bd08de | 4329 | if (!extended_p) |
74531fed | 4330 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4331 | |
c35b1492 PA |
4332 | /* We're connected, but not running. Drop out before we |
4333 | call start_remote. */ | |
e278ad5b | 4334 | rs->starting_up = 0; |
c35b1492 PA |
4335 | return; |
4336 | } | |
74531fed | 4337 | |
74531fed PA |
4338 | /* In non-stop mode, any cached wait status will be stored in |
4339 | the stop reply queue. */ | |
4340 | gdb_assert (wait_status == NULL); | |
f0223081 | 4341 | |
2455069d | 4342 | /* Report all signals during attach/startup. */ |
94bedb42 | 4343 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4344 | |
4345 | /* If there are already stopped threads, mark them stopped and | |
4346 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4347 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4348 | |
4349 | if (target_can_async_p ()) | |
4350 | target_async (1); | |
74531fed | 4351 | } |
c8d104ad | 4352 | |
c8d104ad PA |
4353 | /* If we connected to a live target, do some additional setup. */ |
4354 | if (target_has_execution) | |
4355 | { | |
f4ccffad | 4356 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4357 | remote_check_symbols (); |
c8d104ad | 4358 | } |
50c71eaf | 4359 | |
d5551862 SS |
4360 | /* Possibly the target has been engaged in a trace run started |
4361 | previously; find out where things are at. */ | |
8bd200f1 | 4362 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4363 | { |
00bf0b85 | 4364 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4365 | |
00bf0b85 SS |
4366 | if (current_trace_status ()->running) |
4367 | printf_filtered (_("Trace is already running on the target.\n")); | |
4368 | ||
ab6617cc | 4369 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4370 | |
4371 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4372 | } |
4373 | ||
c0272db5 TW |
4374 | /* Possibly the target has been engaged in a btrace record started |
4375 | previously; find out where things are at. */ | |
4376 | remote_btrace_maybe_reopen (); | |
4377 | ||
1e51243a PA |
4378 | /* The thread and inferior lists are now synchronized with the |
4379 | target, our symbols have been relocated, and we're merged the | |
4380 | target's tracepoints with ours. We're done with basic start | |
4381 | up. */ | |
4382 | rs->starting_up = 0; | |
4383 | ||
a25a5a45 PA |
4384 | /* Maybe breakpoints are global and need to be inserted now. */ |
4385 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4386 | insert_breakpoints (); |
c906108c SS |
4387 | } |
4388 | ||
4389 | /* Open a connection to a remote debugger. | |
4390 | NAME is the filename used for communication. */ | |
4391 | ||
4392 | static void | |
014f9477 | 4393 | remote_open (const char *name, int from_tty) |
c906108c | 4394 | { |
75c99385 | 4395 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4396 | } |
4397 | ||
c906108c SS |
4398 | /* Open a connection to a remote debugger using the extended |
4399 | remote gdb protocol. NAME is the filename used for communication. */ | |
4400 | ||
4401 | static void | |
014f9477 | 4402 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4403 | { |
75c99385 | 4404 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4405 | } |
4406 | ||
ca4f7f8b PA |
4407 | /* Reset all packets back to "unknown support". Called when opening a |
4408 | new connection to a remote target. */ | |
c906108c | 4409 | |
d471ea57 | 4410 | static void |
ca4f7f8b | 4411 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4412 | { |
4413 | int i; | |
a744cf53 | 4414 | |
444abaca | 4415 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4416 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4417 | } |
4418 | ||
ca4f7f8b PA |
4419 | /* Initialize all packet configs. */ |
4420 | ||
4421 | static void | |
4422 | init_all_packet_configs (void) | |
4423 | { | |
4424 | int i; | |
4425 | ||
4426 | for (i = 0; i < PACKET_MAX; i++) | |
4427 | { | |
4428 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4429 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4430 | } | |
4431 | } | |
4432 | ||
23860348 | 4433 | /* Symbol look-up. */ |
dc8acb97 MS |
4434 | |
4435 | static void | |
36d25514 | 4436 | remote_check_symbols (void) |
dc8acb97 | 4437 | { |
d01949b6 | 4438 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4439 | char *msg, *reply, *tmp; |
dc8acb97 | 4440 | int end; |
28170b88 | 4441 | long reply_size; |
a5c0808e | 4442 | struct cleanup *old_chain; |
dc8acb97 | 4443 | |
63154eca PA |
4444 | /* The remote side has no concept of inferiors that aren't running |
4445 | yet, it only knows about running processes. If we're connected | |
4446 | but our current inferior is not running, we should not invite the | |
4447 | remote target to request symbol lookups related to its | |
4448 | (unrelated) current process. */ | |
4449 | if (!target_has_execution) | |
4450 | return; | |
4451 | ||
4082afcc | 4452 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4453 | return; |
4454 | ||
63154eca PA |
4455 | /* Make sure the remote is pointing at the right process. Note |
4456 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4457 | set_general_process (); |
4458 | ||
6d820c5c DJ |
4459 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4460 | because we need both at the same time. */ | |
224c3ddb | 4461 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4462 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4463 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4464 | make_cleanup (free_current_contents, &reply); | |
4465 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4466 | |
23860348 | 4467 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4468 | |
4469 | putpkt ("qSymbol::"); | |
28170b88 MK |
4470 | getpkt (&reply, &reply_size, 0); |
4471 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4472 | |
61012eef | 4473 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4474 | { |
77e371c0 TT |
4475 | struct bound_minimal_symbol sym; |
4476 | ||
dc8acb97 | 4477 | tmp = &reply[8]; |
cfd77fa1 | 4478 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4479 | msg[end] = '\0'; |
4480 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4481 | if (sym.minsym == NULL) |
ea9c271d | 4482 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4483 | else |
2bbe3cc1 | 4484 | { |
f5656ead | 4485 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4486 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4487 | |
4488 | /* If this is a function address, return the start of code | |
4489 | instead of any data function descriptor. */ | |
f5656ead | 4490 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4491 | sym_addr, |
4492 | ¤t_target); | |
4493 | ||
4494 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4495 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4496 | } |
4497 | ||
dc8acb97 | 4498 | putpkt (msg); |
28170b88 | 4499 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4500 | } |
a5c0808e PA |
4501 | |
4502 | do_cleanups (old_chain); | |
dc8acb97 MS |
4503 | } |
4504 | ||
9db8d71f | 4505 | static struct serial * |
baa336ce | 4506 | remote_serial_open (const char *name) |
9db8d71f DJ |
4507 | { |
4508 | static int udp_warning = 0; | |
4509 | ||
4510 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4511 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4512 | serial connection is reliable and not the serial connection promising | |
4513 | to be. */ | |
61012eef | 4514 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4515 | { |
3e43a32a MS |
4516 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4517 | "Some events may be lost, rendering further debugging " | |
4518 | "impossible.")); | |
9db8d71f DJ |
4519 | udp_warning = 1; |
4520 | } | |
4521 | ||
4522 | return serial_open (name); | |
4523 | } | |
4524 | ||
d914c394 SS |
4525 | /* Inform the target of our permission settings. The permission flags |
4526 | work without this, but if the target knows the settings, it can do | |
4527 | a couple things. First, it can add its own check, to catch cases | |
4528 | that somehow manage to get by the permissions checks in target | |
4529 | methods. Second, if the target is wired to disallow particular | |
4530 | settings (for instance, a system in the field that is not set up to | |
4531 | be able to stop at a breakpoint), it can object to any unavailable | |
4532 | permissions. */ | |
4533 | ||
4534 | void | |
c378d69d | 4535 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4536 | { |
4537 | struct remote_state *rs = get_remote_state (); | |
4538 | ||
bba74b36 YQ |
4539 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4540 | "WriteReg:%x;WriteMem:%x;" | |
4541 | "InsertBreak:%x;InsertTrace:%x;" | |
4542 | "InsertFastTrace:%x;Stop:%x", | |
4543 | may_write_registers, may_write_memory, | |
4544 | may_insert_breakpoints, may_insert_tracepoints, | |
4545 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4546 | putpkt (rs->buf); |
4547 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4548 | ||
4549 | /* If the target didn't like the packet, warn the user. Do not try | |
4550 | to undo the user's settings, that would just be maddening. */ | |
4551 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4552 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4553 | } |
4554 | ||
be2a5f71 DJ |
4555 | /* This type describes each known response to the qSupported |
4556 | packet. */ | |
4557 | struct protocol_feature | |
4558 | { | |
4559 | /* The name of this protocol feature. */ | |
4560 | const char *name; | |
4561 | ||
4562 | /* The default for this protocol feature. */ | |
4563 | enum packet_support default_support; | |
4564 | ||
4565 | /* The function to call when this feature is reported, or after | |
4566 | qSupported processing if the feature is not supported. | |
4567 | The first argument points to this structure. The second | |
4568 | argument indicates whether the packet requested support be | |
4569 | enabled, disabled, or probed (or the default, if this function | |
4570 | is being called at the end of processing and this feature was | |
4571 | not reported). The third argument may be NULL; if not NULL, it | |
4572 | is a NUL-terminated string taken from the packet following | |
4573 | this feature's name and an equals sign. */ | |
4574 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4575 | const char *); | |
4576 | ||
4577 | /* The corresponding packet for this feature. Only used if | |
4578 | FUNC is remote_supported_packet. */ | |
4579 | int packet; | |
4580 | }; | |
4581 | ||
be2a5f71 DJ |
4582 | static void |
4583 | remote_supported_packet (const struct protocol_feature *feature, | |
4584 | enum packet_support support, | |
4585 | const char *argument) | |
4586 | { | |
4587 | if (argument) | |
4588 | { | |
4589 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4590 | " \"%s\"."), feature->name); | |
4591 | return; | |
4592 | } | |
4593 | ||
4082afcc | 4594 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4595 | } |
be2a5f71 DJ |
4596 | |
4597 | static void | |
4598 | remote_packet_size (const struct protocol_feature *feature, | |
4599 | enum packet_support support, const char *value) | |
4600 | { | |
4601 | struct remote_state *rs = get_remote_state (); | |
4602 | ||
4603 | int packet_size; | |
4604 | char *value_end; | |
4605 | ||
4606 | if (support != PACKET_ENABLE) | |
4607 | return; | |
4608 | ||
4609 | if (value == NULL || *value == '\0') | |
4610 | { | |
4611 | warning (_("Remote target reported \"%s\" without a size."), | |
4612 | feature->name); | |
4613 | return; | |
4614 | } | |
4615 | ||
4616 | errno = 0; | |
4617 | packet_size = strtol (value, &value_end, 16); | |
4618 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4619 | { | |
4620 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4621 | feature->name, value); | |
4622 | return; | |
4623 | } | |
4624 | ||
be2a5f71 DJ |
4625 | /* Record the new maximum packet size. */ |
4626 | rs->explicit_packet_size = packet_size; | |
4627 | } | |
4628 | ||
dc473cfb | 4629 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4630 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4631 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4632 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4633 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4634 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4635 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4636 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4637 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4638 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4639 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4640 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4641 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4642 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4643 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4644 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4645 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4646 | PACKET_qXfer_spu_read }, | |
4647 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4648 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4649 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4650 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4651 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4652 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4653 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4654 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4655 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4656 | PACKET_QPassSignals }, | |
82075af2 JS |
4657 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4658 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4659 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4660 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
4661 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
4662 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
4663 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4664 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
4665 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
4666 | PACKET_QEnvironmentHexEncoded }, | |
4667 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
4668 | PACKET_QEnvironmentReset }, | |
4669 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
4670 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
4671 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4672 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4673 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4674 | PACKET_multiprocess_feature }, | |
4675 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4676 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4677 | PACKET_qXfer_siginfo_read }, | |
4678 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4679 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4680 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4681 | PACKET_ConditionalTracepoints }, |
4082afcc | 4682 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4683 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4684 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4685 | PACKET_BreakpointCommands }, |
4082afcc | 4686 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4687 | PACKET_FastTracepoints }, |
4082afcc | 4688 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4689 | PACKET_StaticTracepoints }, |
4082afcc | 4690 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4691 | PACKET_InstallInTrace}, |
4082afcc PA |
4692 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4693 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4694 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4695 | PACKET_bc }, | |
4696 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4697 | PACKET_bs }, | |
409873ef SS |
4698 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4699 | PACKET_TracepointSource }, | |
d914c394 SS |
4700 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4701 | PACKET_QAllow }, | |
4082afcc PA |
4702 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4703 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4704 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4705 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4706 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4707 | PACKET_qXfer_uib }, | |
03583c20 UW |
4708 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4709 | PACKET_QDisableRandomization }, | |
d1feda86 | 4710 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4711 | { "QTBuffer:size", PACKET_DISABLE, |
4712 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4713 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4714 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4715 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4716 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4717 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4718 | PACKET_qXfer_btrace }, |
4719 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4720 | PACKET_qXfer_btrace_conf }, |
4721 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4722 | PACKET_Qbtrace_conf_bts_size }, |
4723 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4724 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4725 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4726 | PACKET_fork_event_feature }, | |
4727 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4728 | PACKET_vfork_event_feature }, | |
94585166 DB |
4729 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4730 | PACKET_exec_event_feature }, | |
b20a6524 | 4731 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4732 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4733 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4734 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4735 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4736 | }; |
4737 | ||
c8d5aac9 L |
4738 | static char *remote_support_xml; |
4739 | ||
4740 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4741 | ||
4742 | void | |
6e39997a | 4743 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4744 | { |
4745 | #if defined(HAVE_LIBEXPAT) | |
4746 | if (remote_support_xml == NULL) | |
c4f7c687 | 4747 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4748 | else |
4749 | { | |
4750 | char *copy = xstrdup (remote_support_xml + 13); | |
4751 | char *p = strtok (copy, ","); | |
4752 | ||
4753 | do | |
4754 | { | |
4755 | if (strcmp (p, xml) == 0) | |
4756 | { | |
4757 | /* already there */ | |
4758 | xfree (copy); | |
4759 | return; | |
4760 | } | |
4761 | } | |
4762 | while ((p = strtok (NULL, ",")) != NULL); | |
4763 | xfree (copy); | |
4764 | ||
94b0dee1 PA |
4765 | remote_support_xml = reconcat (remote_support_xml, |
4766 | remote_support_xml, ",", xml, | |
4767 | (char *) NULL); | |
c8d5aac9 L |
4768 | } |
4769 | #endif | |
4770 | } | |
4771 | ||
4772 | static char * | |
4773 | remote_query_supported_append (char *msg, const char *append) | |
4774 | { | |
4775 | if (msg) | |
94b0dee1 | 4776 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4777 | else |
4778 | return xstrdup (append); | |
4779 | } | |
4780 | ||
be2a5f71 DJ |
4781 | static void |
4782 | remote_query_supported (void) | |
4783 | { | |
4784 | struct remote_state *rs = get_remote_state (); | |
4785 | char *next; | |
4786 | int i; | |
4787 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4788 | ||
4789 | /* The packet support flags are handled differently for this packet | |
4790 | than for most others. We treat an error, a disabled packet, and | |
4791 | an empty response identically: any features which must be reported | |
4792 | to be used will be automatically disabled. An empty buffer | |
4793 | accomplishes this, since that is also the representation for a list | |
4794 | containing no features. */ | |
4795 | ||
4796 | rs->buf[0] = 0; | |
4082afcc | 4797 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4798 | { |
c8d5aac9 | 4799 | char *q = NULL; |
94b0dee1 | 4800 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4801 | |
73b8c1fd PA |
4802 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4803 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4804 | |
f7e6eed5 PA |
4805 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4806 | q = remote_query_supported_append (q, "swbreak+"); | |
4807 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4808 | q = remote_query_supported_append (q, "hwbreak+"); | |
4809 | ||
dde08ee1 PA |
4810 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4811 | ||
8020350c DB |
4812 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4813 | != AUTO_BOOLEAN_FALSE) | |
4814 | q = remote_query_supported_append (q, "fork-events+"); | |
4815 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4816 | != AUTO_BOOLEAN_FALSE) | |
4817 | q = remote_query_supported_append (q, "vfork-events+"); | |
4818 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4819 | != AUTO_BOOLEAN_FALSE) | |
4820 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4821 | |
750ce8d1 YQ |
4822 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4823 | q = remote_query_supported_append (q, "vContSupported+"); | |
4824 | ||
65706a29 PA |
4825 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4826 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4827 | ||
f2faf941 PA |
4828 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4829 | q = remote_query_supported_append (q, "no-resumed+"); | |
4830 | ||
b35d5edb PA |
4831 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4832 | the qSupported:xmlRegisters=i386 handling. */ | |
4833 | if (remote_support_xml != NULL) | |
4834 | q = remote_query_supported_append (q, remote_support_xml); | |
4835 | ||
dde08ee1 PA |
4836 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4837 | putpkt (q); | |
82f73884 | 4838 | |
94b0dee1 PA |
4839 | do_cleanups (old_chain); |
4840 | ||
be2a5f71 DJ |
4841 | getpkt (&rs->buf, &rs->buf_size, 0); |
4842 | ||
4843 | /* If an error occured, warn, but do not return - just reset the | |
4844 | buffer to empty and go on to disable features. */ | |
4845 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4846 | == PACKET_ERROR) | |
4847 | { | |
4848 | warning (_("Remote failure reply: %s"), rs->buf); | |
4849 | rs->buf[0] = 0; | |
4850 | } | |
4851 | } | |
4852 | ||
4853 | memset (seen, 0, sizeof (seen)); | |
4854 | ||
4855 | next = rs->buf; | |
4856 | while (*next) | |
4857 | { | |
4858 | enum packet_support is_supported; | |
4859 | char *p, *end, *name_end, *value; | |
4860 | ||
4861 | /* First separate out this item from the rest of the packet. If | |
4862 | there's another item after this, we overwrite the separator | |
4863 | (terminated strings are much easier to work with). */ | |
4864 | p = next; | |
4865 | end = strchr (p, ';'); | |
4866 | if (end == NULL) | |
4867 | { | |
4868 | end = p + strlen (p); | |
4869 | next = end; | |
4870 | } | |
4871 | else | |
4872 | { | |
89be2091 DJ |
4873 | *end = '\0'; |
4874 | next = end + 1; | |
4875 | ||
be2a5f71 DJ |
4876 | if (end == p) |
4877 | { | |
4878 | warning (_("empty item in \"qSupported\" response")); | |
4879 | continue; | |
4880 | } | |
be2a5f71 DJ |
4881 | } |
4882 | ||
4883 | name_end = strchr (p, '='); | |
4884 | if (name_end) | |
4885 | { | |
4886 | /* This is a name=value entry. */ | |
4887 | is_supported = PACKET_ENABLE; | |
4888 | value = name_end + 1; | |
4889 | *name_end = '\0'; | |
4890 | } | |
4891 | else | |
4892 | { | |
4893 | value = NULL; | |
4894 | switch (end[-1]) | |
4895 | { | |
4896 | case '+': | |
4897 | is_supported = PACKET_ENABLE; | |
4898 | break; | |
4899 | ||
4900 | case '-': | |
4901 | is_supported = PACKET_DISABLE; | |
4902 | break; | |
4903 | ||
4904 | case '?': | |
4905 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4906 | break; | |
4907 | ||
4908 | default: | |
3e43a32a MS |
4909 | warning (_("unrecognized item \"%s\" " |
4910 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4911 | continue; |
4912 | } | |
4913 | end[-1] = '\0'; | |
4914 | } | |
4915 | ||
4916 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4917 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4918 | { | |
4919 | const struct protocol_feature *feature; | |
4920 | ||
4921 | seen[i] = 1; | |
4922 | feature = &remote_protocol_features[i]; | |
4923 | feature->func (feature, is_supported, value); | |
4924 | break; | |
4925 | } | |
4926 | } | |
4927 | ||
4928 | /* If we increased the packet size, make sure to increase the global | |
4929 | buffer size also. We delay this until after parsing the entire | |
4930 | qSupported packet, because this is the same buffer we were | |
4931 | parsing. */ | |
4932 | if (rs->buf_size < rs->explicit_packet_size) | |
4933 | { | |
4934 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4935 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4936 | } |
4937 | ||
4938 | /* Handle the defaults for unmentioned features. */ | |
4939 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4940 | if (!seen[i]) | |
4941 | { | |
4942 | const struct protocol_feature *feature; | |
4943 | ||
4944 | feature = &remote_protocol_features[i]; | |
4945 | feature->func (feature, feature->default_support, NULL); | |
4946 | } | |
4947 | } | |
4948 | ||
048094ac PA |
4949 | /* Serial QUIT handler for the remote serial descriptor. |
4950 | ||
4951 | Defers handling a Ctrl-C until we're done with the current | |
4952 | command/response packet sequence, unless: | |
4953 | ||
4954 | - We're setting up the connection. Don't send a remote interrupt | |
4955 | request, as we're not fully synced yet. Quit immediately | |
4956 | instead. | |
4957 | ||
4958 | - The target has been resumed in the foreground | |
223ffa71 | 4959 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
4960 | packet, and we're blocked waiting for the stop reply, thus a |
4961 | Ctrl-C should be immediately sent to the target. | |
4962 | ||
4963 | - We get a second Ctrl-C while still within the same serial read or | |
4964 | write. In that case the serial is seemingly wedged --- offer to | |
4965 | quit/disconnect. | |
4966 | ||
4967 | - We see a second Ctrl-C without target response, after having | |
4968 | previously interrupted the target. In that case the target/stub | |
4969 | is probably wedged --- offer to quit/disconnect. | |
4970 | */ | |
4971 | ||
4972 | static void | |
4973 | remote_serial_quit_handler (void) | |
4974 | { | |
4975 | struct remote_state *rs = get_remote_state (); | |
4976 | ||
4977 | if (check_quit_flag ()) | |
4978 | { | |
4979 | /* If we're starting up, we're not fully synced yet. Quit | |
4980 | immediately. */ | |
4981 | if (rs->starting_up) | |
4982 | quit (); | |
4983 | else if (rs->got_ctrlc_during_io) | |
4984 | { | |
4985 | if (query (_("The target is not responding to GDB commands.\n" | |
4986 | "Stop debugging it? "))) | |
4987 | remote_unpush_and_throw (); | |
4988 | } | |
4989 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 4990 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
4991 | interrupt_query (); |
4992 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
4993 | an interrupt request. */ | |
223ffa71 | 4994 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
048094ac PA |
4995 | target_interrupt (inferior_ptid); |
4996 | else | |
4997 | rs->got_ctrlc_during_io = 1; | |
4998 | } | |
4999 | } | |
5000 | ||
78a095c3 JK |
5001 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
5002 | on it so remove them first. */ | |
5003 | ||
5004 | static void | |
5005 | remote_unpush_target (void) | |
5006 | { | |
915ef8b1 | 5007 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 5008 | } |
be2a5f71 | 5009 | |
048094ac PA |
5010 | static void |
5011 | remote_unpush_and_throw (void) | |
5012 | { | |
5013 | remote_unpush_target (); | |
5014 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
5015 | } | |
5016 | ||
c906108c | 5017 | static void |
014f9477 | 5018 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 5019 | struct target_ops *target, int extended_p) |
c906108c | 5020 | { |
d01949b6 | 5021 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 5022 | |
c906108c | 5023 | if (name == 0) |
8a3fe4f8 | 5024 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5025 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5026 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5027 | |
23860348 | 5028 | /* See FIXME above. */ |
c6ebd6cf | 5029 | if (!target_async_permitted) |
92d1e331 | 5030 | wait_forever_enabled_p = 1; |
6426a772 | 5031 | |
2d717e4f | 5032 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5033 | Ask this question first, before target_preopen has a chance to kill |
5034 | anything. */ | |
5d93a237 | 5035 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 5036 | { |
78a095c3 JK |
5037 | if (from_tty |
5038 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5039 | error (_("Still connected.")); |
5040 | } | |
5041 | ||
78a095c3 | 5042 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5043 | target_preopen (from_tty); |
5044 | ||
89be2091 | 5045 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
5046 | xfree (rs->last_pass_packet); |
5047 | rs->last_pass_packet = NULL; | |
89be2091 | 5048 | |
9b224c5e PA |
5049 | /* Make sure we send the program signals list the next time we |
5050 | resume. */ | |
5e4a05c4 TT |
5051 | xfree (rs->last_program_signals_packet); |
5052 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 5053 | |
ad9a8f3f | 5054 | remote_fileio_reset (); |
1dd41f16 NS |
5055 | reopen_exec_file (); |
5056 | reread_symbols (); | |
5057 | ||
5d93a237 TT |
5058 | rs->remote_desc = remote_serial_open (name); |
5059 | if (!rs->remote_desc) | |
c906108c SS |
5060 | perror_with_name (name); |
5061 | ||
5062 | if (baud_rate != -1) | |
5063 | { | |
5d93a237 | 5064 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5065 | { |
9b74d5d3 KB |
5066 | /* The requested speed could not be set. Error out to |
5067 | top level after closing remote_desc. Take care to | |
5068 | set remote_desc to NULL to avoid closing remote_desc | |
5069 | more than once. */ | |
5d93a237 TT |
5070 | serial_close (rs->remote_desc); |
5071 | rs->remote_desc = NULL; | |
c906108c SS |
5072 | perror_with_name (name); |
5073 | } | |
5074 | } | |
5075 | ||
236af5e3 | 5076 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5077 | serial_raw (rs->remote_desc); |
c906108c SS |
5078 | |
5079 | /* If there is something sitting in the buffer we might take it as a | |
5080 | response to a command, which would be bad. */ | |
5d93a237 | 5081 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5082 | |
5083 | if (from_tty) | |
5084 | { | |
5085 | puts_filtered ("Remote debugging using "); | |
5086 | puts_filtered (name); | |
5087 | puts_filtered ("\n"); | |
5088 | } | |
23860348 | 5089 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 5090 | |
74531fed PA |
5091 | /* Register extra event sources in the event loop. */ |
5092 | remote_async_inferior_event_token | |
5093 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5094 | NULL); | |
5965e028 | 5095 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5096 | |
be2a5f71 DJ |
5097 | /* Reset the target state; these things will be queried either by |
5098 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5099 | reset_all_packet_configs_support (); |
74531fed | 5100 | rs->cached_wait_status = 0; |
be2a5f71 | 5101 | rs->explicit_packet_size = 0; |
a6f3e723 | 5102 | rs->noack_mode = 0; |
82f73884 | 5103 | rs->extended = extended_p; |
e24a49d8 | 5104 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5105 | rs->ctrlc_pending_p = 0; |
048094ac | 5106 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5107 | |
47f8a51d TT |
5108 | rs->general_thread = not_sent_ptid; |
5109 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5110 | rs->remote_traceframe_number = -1; |
c906108c | 5111 | |
3a00c802 PA |
5112 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5113 | ||
9d1f7ab2 | 5114 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5115 | rs->use_threadinfo_query = 1; |
5116 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5117 | |
80152258 PA |
5118 | readahead_cache_invalidate (); |
5119 | ||
048094ac PA |
5120 | /* Start out by owning the terminal. */ |
5121 | remote_async_terminal_ours_p = 1; | |
5122 | ||
c6ebd6cf | 5123 | if (target_async_permitted) |
92d1e331 | 5124 | { |
92d1e331 DJ |
5125 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5126 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5127 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5128 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5129 | around this. Eventually a mechanism that allows |
92d1e331 | 5130 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5131 | implemented. */ |
92d1e331 DJ |
5132 | wait_forever_enabled_p = 0; |
5133 | } | |
5134 | ||
23860348 | 5135 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5136 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5137 | |
74531fed PA |
5138 | /* Start afresh. */ |
5139 | init_thread_list (); | |
5140 | ||
36918e70 | 5141 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5142 | target (we'd otherwise be in an inconsistent state) and then |
5143 | propogate the error on up the exception chain. This ensures that | |
5144 | the caller doesn't stumble along blindly assuming that the | |
5145 | function succeeded. The CLI doesn't have this problem but other | |
5146 | UI's, such as MI do. | |
36918e70 AC |
5147 | |
5148 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5149 | this function should return an error indication letting the | |
ce2826aa | 5150 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5151 | ``target remote'' is directly wired to this function making that |
5152 | impossible. On a positive note, the CLI side of this problem has | |
5153 | been fixed - the function set_cmd_context() makes it possible for | |
5154 | all the ``target ....'' commands to share a common callback | |
5155 | function. See cli-dump.c. */ | |
109c3e39 | 5156 | { |
2d717e4f | 5157 | |
492d29ea | 5158 | TRY |
04bd08de TT |
5159 | { |
5160 | remote_start_remote (from_tty, target, extended_p); | |
5161 | } | |
492d29ea | 5162 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5163 | { |
c8d104ad PA |
5164 | /* Pop the partially set up target - unless something else did |
5165 | already before throwing the exception. */ | |
5d93a237 | 5166 | if (rs->remote_desc != NULL) |
78a095c3 | 5167 | remote_unpush_target (); |
c6ebd6cf | 5168 | if (target_async_permitted) |
109c3e39 AC |
5169 | wait_forever_enabled_p = 1; |
5170 | throw_exception (ex); | |
5171 | } | |
492d29ea | 5172 | END_CATCH |
109c3e39 | 5173 | } |
c906108c | 5174 | |
f4abbc16 MM |
5175 | remote_btrace_reset (); |
5176 | ||
c6ebd6cf | 5177 | if (target_async_permitted) |
92d1e331 | 5178 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5179 | } |
5180 | ||
de0d863e DB |
5181 | /* Detach the specified process. */ |
5182 | ||
5183 | static void | |
5184 | remote_detach_pid (int pid) | |
5185 | { | |
5186 | struct remote_state *rs = get_remote_state (); | |
5187 | ||
5188 | if (remote_multi_process_p (rs)) | |
5189 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5190 | else | |
5191 | strcpy (rs->buf, "D"); | |
5192 | ||
5193 | putpkt (rs->buf); | |
5194 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5195 | ||
5196 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5197 | ; | |
5198 | else if (rs->buf[0] == '\0') | |
5199 | error (_("Remote doesn't know how to detach")); | |
5200 | else | |
5201 | error (_("Can't detach process.")); | |
5202 | } | |
5203 | ||
5204 | /* This detaches a program to which we previously attached, using | |
5205 | inferior_ptid to identify the process. After this is done, GDB | |
5206 | can be used to debug some other program. We better not have left | |
5207 | any breakpoints in the target program or it'll die when it hits | |
5208 | one. */ | |
c906108c SS |
5209 | |
5210 | static void | |
de0d863e | 5211 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 5212 | { |
82f73884 | 5213 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5214 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5215 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5216 | int is_fork_parent; | |
c906108c SS |
5217 | |
5218 | if (args) | |
8a3fe4f8 | 5219 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 5220 | |
2d717e4f DJ |
5221 | if (!target_has_execution) |
5222 | error (_("No process to detach from.")); | |
5223 | ||
0f48b757 | 5224 | target_announce_detach (from_tty); |
7cee1e54 | 5225 | |
c906108c | 5226 | /* Tell the remote target to detach. */ |
de0d863e | 5227 | remote_detach_pid (pid); |
82f73884 | 5228 | |
8020350c DB |
5229 | /* Exit only if this is the only active inferior. */ |
5230 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5231 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5232 | |
de0d863e DB |
5233 | /* Check to see if we are detaching a fork parent. Note that if we |
5234 | are detaching a fork child, tp == NULL. */ | |
5235 | is_fork_parent = (tp != NULL | |
5236 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5237 | ||
5238 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5239 | breakpoints that should be available for the followed inferior. */ | |
5240 | if (!is_fork_parent) | |
bc1e6c81 | 5241 | target_mourn_inferior (inferior_ptid); |
de0d863e DB |
5242 | else |
5243 | { | |
5244 | inferior_ptid = null_ptid; | |
5245 | detach_inferior (pid); | |
5246 | } | |
2d717e4f DJ |
5247 | } |
5248 | ||
5249 | static void | |
52554a0e | 5250 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5251 | { |
de0d863e | 5252 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
5253 | } |
5254 | ||
5255 | static void | |
52554a0e | 5256 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5257 | { |
de0d863e DB |
5258 | remote_detach_1 (args, from_tty); |
5259 | } | |
5260 | ||
5261 | /* Target follow-fork function for remote targets. On entry, and | |
5262 | at return, the current inferior is the fork parent. | |
5263 | ||
5264 | Note that although this is currently only used for extended-remote, | |
5265 | it is named remote_follow_fork in anticipation of using it for the | |
5266 | remote target as well. */ | |
5267 | ||
5268 | static int | |
5269 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5270 | int detach_fork) | |
5271 | { | |
5272 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5273 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5274 | |
c269dbdb DB |
5275 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5276 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5277 | { |
5278 | /* When following the parent and detaching the child, we detach | |
5279 | the child here. For the case of following the child and | |
5280 | detaching the parent, the detach is done in the target- | |
5281 | independent follow fork code in infrun.c. We can't use | |
5282 | target_detach when detaching an unfollowed child because | |
5283 | the client side doesn't know anything about the child. */ | |
5284 | if (detach_fork && !follow_child) | |
5285 | { | |
5286 | /* Detach the fork child. */ | |
5287 | ptid_t child_ptid; | |
5288 | pid_t child_pid; | |
5289 | ||
5290 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5291 | child_pid = ptid_get_pid (child_ptid); | |
5292 | ||
5293 | remote_detach_pid (child_pid); | |
5294 | detach_inferior (child_pid); | |
5295 | } | |
5296 | } | |
5297 | return 0; | |
c906108c SS |
5298 | } |
5299 | ||
94585166 DB |
5300 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5301 | in the program space of the new inferior. On entry and at return the | |
5302 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5303 | inferior, which may be the same as the exec'ing inferior unless | |
5304 | follow-exec-mode is "new". */ | |
5305 | ||
5306 | static void | |
5307 | remote_follow_exec (struct target_ops *ops, | |
5308 | struct inferior *inf, char *execd_pathname) | |
5309 | { | |
5310 | /* We know that this is a target file name, so if it has the "target:" | |
5311 | prefix we strip it off before saving it in the program space. */ | |
5312 | if (is_target_filename (execd_pathname)) | |
5313 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5314 | ||
5315 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5316 | } | |
5317 | ||
6ad8ae5c DJ |
5318 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5319 | ||
43ff13b4 | 5320 | static void |
fee354ee | 5321 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5322 | { |
43ff13b4 | 5323 | if (args) |
2d717e4f | 5324 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5325 | |
8020350c DB |
5326 | /* Make sure we unpush even the extended remote targets. Calling |
5327 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5328 | unpush if there is more than one inferior left. */ | |
5329 | unpush_target (target); | |
5330 | generic_mourn_inferior (); | |
2d717e4f | 5331 | |
43ff13b4 JM |
5332 | if (from_tty) |
5333 | puts_filtered ("Ending remote debugging.\n"); | |
5334 | } | |
5335 | ||
2d717e4f DJ |
5336 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5337 | be chatty about it. */ | |
5338 | ||
5339 | static void | |
20f796c9 GB |
5340 | extended_remote_attach (struct target_ops *target, const char *args, |
5341 | int from_tty) | |
2d717e4f DJ |
5342 | { |
5343 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5344 | int pid; |
96ef3384 | 5345 | char *wait_status = NULL; |
2d717e4f | 5346 | |
74164c56 | 5347 | pid = parse_pid_to_attach (args); |
2d717e4f | 5348 | |
74164c56 JK |
5349 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5350 | way as in other targets. */ | |
2d717e4f | 5351 | |
4082afcc | 5352 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5353 | error (_("This target does not support attaching to a process")); |
5354 | ||
7cee1e54 PA |
5355 | if (from_tty) |
5356 | { | |
5357 | char *exec_file = get_exec_file (0); | |
5358 | ||
5359 | if (exec_file) | |
5360 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5361 | target_pid_to_str (pid_to_ptid (pid))); | |
5362 | else | |
5363 | printf_unfiltered (_("Attaching to %s\n"), | |
5364 | target_pid_to_str (pid_to_ptid (pid))); | |
5365 | ||
5366 | gdb_flush (gdb_stdout); | |
5367 | } | |
5368 | ||
bba74b36 | 5369 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5370 | putpkt (rs->buf); |
5371 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5372 | ||
4082afcc PA |
5373 | switch (packet_ok (rs->buf, |
5374 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5375 | { |
4082afcc | 5376 | case PACKET_OK: |
6efcd9a8 | 5377 | if (!target_is_non_stop_p ()) |
74531fed PA |
5378 | { |
5379 | /* Save the reply for later. */ | |
224c3ddb | 5380 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5381 | strcpy (wait_status, rs->buf); |
5382 | } | |
5383 | else if (strcmp (rs->buf, "OK") != 0) | |
5384 | error (_("Attaching to %s failed with: %s"), | |
5385 | target_pid_to_str (pid_to_ptid (pid)), | |
5386 | rs->buf); | |
4082afcc PA |
5387 | break; |
5388 | case PACKET_UNKNOWN: | |
5389 | error (_("This target does not support attaching to a process")); | |
5390 | default: | |
5391 | error (_("Attaching to %s failed"), | |
5392 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5393 | } |
2d717e4f | 5394 | |
1b6e6f5c | 5395 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5396 | |
2d717e4f | 5397 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5398 | |
6efcd9a8 | 5399 | if (target_is_non_stop_p ()) |
bad34192 PA |
5400 | { |
5401 | struct thread_info *thread; | |
79d7f229 | 5402 | |
bad34192 | 5403 | /* Get list of threads. */ |
e8032dde | 5404 | remote_update_thread_list (target); |
82f73884 | 5405 | |
bad34192 PA |
5406 | thread = first_thread_of_process (pid); |
5407 | if (thread) | |
5408 | inferior_ptid = thread->ptid; | |
5409 | else | |
5410 | inferior_ptid = pid_to_ptid (pid); | |
5411 | ||
5412 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5413 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5414 | } |
74531fed | 5415 | else |
bad34192 PA |
5416 | { |
5417 | /* Now, if we have thread information, update inferior_ptid. */ | |
5418 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5419 | ||
5420 | /* Add the main thread to the thread list. */ | |
5421 | add_thread_silent (inferior_ptid); | |
5422 | } | |
c0a2216e | 5423 | |
96ef3384 UW |
5424 | /* Next, if the target can specify a description, read it. We do |
5425 | this before anything involving memory or registers. */ | |
5426 | target_find_description (); | |
5427 | ||
6efcd9a8 | 5428 | if (!target_is_non_stop_p ()) |
74531fed PA |
5429 | { |
5430 | /* Use the previously fetched status. */ | |
5431 | gdb_assert (wait_status != NULL); | |
5432 | ||
5433 | if (target_can_async_p ()) | |
5434 | { | |
722247f1 YQ |
5435 | struct notif_event *reply |
5436 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5437 | |
722247f1 | 5438 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5439 | |
6a3753b3 | 5440 | target_async (1); |
74531fed PA |
5441 | } |
5442 | else | |
5443 | { | |
5444 | gdb_assert (wait_status != NULL); | |
5445 | strcpy (rs->buf, wait_status); | |
5446 | rs->cached_wait_status = 1; | |
5447 | } | |
5448 | } | |
5449 | else | |
5450 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5451 | } |
5452 | ||
b9c1d481 AS |
5453 | /* Implementation of the to_post_attach method. */ |
5454 | ||
5455 | static void | |
5456 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5457 | { | |
6efcd9a8 PA |
5458 | /* Get text, data & bss offsets. */ |
5459 | get_offsets (); | |
5460 | ||
b9c1d481 AS |
5461 | /* In certain cases GDB might not have had the chance to start |
5462 | symbol lookup up until now. This could happen if the debugged | |
5463 | binary is not using shared libraries, the vsyscall page is not | |
5464 | present (on Linux) and the binary itself hadn't changed since the | |
5465 | debugging process was started. */ | |
5466 | if (symfile_objfile != NULL) | |
5467 | remote_check_symbols(); | |
5468 | } | |
5469 | ||
c906108c | 5470 | \f |
506fb367 DJ |
5471 | /* Check for the availability of vCont. This function should also check |
5472 | the response. */ | |
c906108c SS |
5473 | |
5474 | static void | |
6d820c5c | 5475 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5476 | { |
2e9f7625 | 5477 | char *buf; |
6d820c5c | 5478 | |
2e9f7625 DJ |
5479 | strcpy (rs->buf, "vCont?"); |
5480 | putpkt (rs->buf); | |
6d820c5c | 5481 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5482 | buf = rs->buf; |
c906108c | 5483 | |
506fb367 | 5484 | /* Make sure that the features we assume are supported. */ |
61012eef | 5485 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5486 | { |
5487 | char *p = &buf[5]; | |
750ce8d1 | 5488 | int support_c, support_C; |
506fb367 | 5489 | |
750ce8d1 YQ |
5490 | rs->supports_vCont.s = 0; |
5491 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5492 | support_c = 0; |
5493 | support_C = 0; | |
d458bd84 | 5494 | rs->supports_vCont.t = 0; |
c1e36e3e | 5495 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5496 | while (p && *p == ';') |
5497 | { | |
5498 | p++; | |
5499 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5500 | rs->supports_vCont.s = 1; |
506fb367 | 5501 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5502 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5503 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5504 | support_c = 1; | |
5505 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5506 | support_C = 1; | |
74531fed | 5507 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5508 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5509 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5510 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5511 | |
5512 | p = strchr (p, ';'); | |
5513 | } | |
c906108c | 5514 | |
750ce8d1 YQ |
5515 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5516 | BUF will make packet_ok disable the packet. */ | |
5517 | if (!support_c || !support_C) | |
506fb367 DJ |
5518 | buf[0] = 0; |
5519 | } | |
c906108c | 5520 | |
444abaca | 5521 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5522 | } |
c906108c | 5523 | |
0d8f58ca PA |
5524 | /* Helper function for building "vCont" resumptions. Write a |
5525 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5526 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5527 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5528 | resumed thread should be single-stepped and/or signalled. If PTID | |
5529 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5530 | represents a process, then all threads of the process are resumed; | |
5531 | the thread to be stepped and/or signalled is given in the global | |
5532 | INFERIOR_PTID. */ | |
5533 | ||
5534 | static char * | |
5535 | append_resumption (char *p, char *endp, | |
2ea28649 | 5536 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5537 | { |
5538 | struct remote_state *rs = get_remote_state (); | |
5539 | ||
a493e3e2 | 5540 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5541 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5542 | else if (step |
5543 | /* GDB is willing to range step. */ | |
5544 | && use_range_stepping | |
5545 | /* Target supports range stepping. */ | |
5546 | && rs->supports_vCont.r | |
5547 | /* We don't currently support range stepping multiple | |
5548 | threads with a wildcard (though the protocol allows it, | |
5549 | so stubs shouldn't make an active effort to forbid | |
5550 | it). */ | |
5551 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5552 | { | |
5553 | struct thread_info *tp; | |
5554 | ||
5555 | if (ptid_equal (ptid, minus_one_ptid)) | |
5556 | { | |
5557 | /* If we don't know about the target thread's tid, then | |
5558 | we're resuming magic_null_ptid (see caller). */ | |
5559 | tp = find_thread_ptid (magic_null_ptid); | |
5560 | } | |
5561 | else | |
5562 | tp = find_thread_ptid (ptid); | |
5563 | gdb_assert (tp != NULL); | |
5564 | ||
5565 | if (tp->control.may_range_step) | |
5566 | { | |
5567 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5568 | ||
5569 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5570 | phex_nz (tp->control.step_range_start, | |
5571 | addr_size), | |
5572 | phex_nz (tp->control.step_range_end, | |
5573 | addr_size)); | |
5574 | } | |
5575 | else | |
5576 | p += xsnprintf (p, endp - p, ";s"); | |
5577 | } | |
0d8f58ca PA |
5578 | else if (step) |
5579 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5580 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5581 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5582 | else | |
5583 | p += xsnprintf (p, endp - p, ";c"); | |
5584 | ||
5585 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5586 | { | |
5587 | ptid_t nptid; | |
5588 | ||
5589 | /* All (-1) threads of process. */ | |
ba348170 | 5590 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5591 | |
5592 | p += xsnprintf (p, endp - p, ":"); | |
5593 | p = write_ptid (p, endp, nptid); | |
5594 | } | |
5595 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5596 | { | |
5597 | p += xsnprintf (p, endp - p, ":"); | |
5598 | p = write_ptid (p, endp, ptid); | |
5599 | } | |
5600 | ||
5601 | return p; | |
5602 | } | |
5603 | ||
799a2abe PA |
5604 | /* Clear the thread's private info on resume. */ |
5605 | ||
5606 | static void | |
5607 | resume_clear_thread_private_info (struct thread_info *thread) | |
5608 | { | |
5609 | if (thread->priv != NULL) | |
5610 | { | |
5611 | thread->priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5612 | thread->priv->watch_data_address = 0; | |
5613 | } | |
5614 | } | |
5615 | ||
e5ef252a PA |
5616 | /* Append a vCont continue-with-signal action for threads that have a |
5617 | non-zero stop signal. */ | |
5618 | ||
5619 | static char * | |
5620 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5621 | { | |
5622 | struct thread_info *thread; | |
5623 | ||
034f788c | 5624 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5625 | if (ptid_match (thread->ptid, ptid) |
5626 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5627 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5628 | { |
5629 | p = append_resumption (p, endp, thread->ptid, | |
5630 | 0, thread->suspend.stop_signal); | |
5631 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5632 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5633 | } |
5634 | ||
5635 | return p; | |
5636 | } | |
5637 | ||
7b68ffbb PA |
5638 | /* Set the target running, using the packets that use Hc |
5639 | (c/s/C/S). */ | |
5640 | ||
5641 | static void | |
5642 | remote_resume_with_hc (struct target_ops *ops, | |
5643 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5644 | { | |
5645 | struct remote_state *rs = get_remote_state (); | |
5646 | struct thread_info *thread; | |
5647 | char *buf; | |
5648 | ||
5649 | rs->last_sent_signal = siggnal; | |
5650 | rs->last_sent_step = step; | |
5651 | ||
5652 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5653 | thread. */ | |
5654 | if (ptid_equal (ptid, minus_one_ptid)) | |
5655 | set_continue_thread (any_thread_ptid); | |
5656 | else | |
5657 | set_continue_thread (ptid); | |
5658 | ||
5659 | ALL_NON_EXITED_THREADS (thread) | |
5660 | resume_clear_thread_private_info (thread); | |
5661 | ||
5662 | buf = rs->buf; | |
5663 | if (execution_direction == EXEC_REVERSE) | |
5664 | { | |
5665 | /* We don't pass signals to the target in reverse exec mode. */ | |
5666 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5667 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5668 | siggnal); | |
5669 | ||
5670 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5671 | error (_("Remote reverse-step not supported.")); | |
5672 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5673 | error (_("Remote reverse-continue not supported.")); | |
5674 | ||
5675 | strcpy (buf, step ? "bs" : "bc"); | |
5676 | } | |
5677 | else if (siggnal != GDB_SIGNAL_0) | |
5678 | { | |
5679 | buf[0] = step ? 'S' : 'C'; | |
5680 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5681 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5682 | buf[3] = '\0'; | |
5683 | } | |
5684 | else | |
5685 | strcpy (buf, step ? "s" : "c"); | |
5686 | ||
5687 | putpkt (buf); | |
5688 | } | |
5689 | ||
506fb367 DJ |
5690 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5691 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5692 | resumed thread should be single-stepped and/or signalled. If PTID |
5693 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5694 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5695 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5696 | |
7b68ffbb PA |
5697 | This function issues a strict subset of all possible vCont commands |
5698 | at the moment. */ | |
44eaed12 | 5699 | |
506fb367 | 5700 | static int |
7b68ffbb | 5701 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5702 | { |
5703 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5704 | char *p; |
5705 | char *endp; | |
44eaed12 | 5706 | |
7b68ffbb PA |
5707 | /* No reverse execution actions defined for vCont. */ |
5708 | if (execution_direction == EXEC_REVERSE) | |
5709 | return 0; | |
5710 | ||
4082afcc | 5711 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5712 | remote_vcont_probe (rs); |
44eaed12 | 5713 | |
4082afcc | 5714 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5715 | return 0; |
44eaed12 | 5716 | |
82f73884 PA |
5717 | p = rs->buf; |
5718 | endp = rs->buf + get_remote_packet_size (); | |
5719 | ||
506fb367 DJ |
5720 | /* If we could generate a wider range of packets, we'd have to worry |
5721 | about overflowing BUF. Should there be a generic | |
5722 | "multi-part-packet" packet? */ | |
5723 | ||
0d8f58ca PA |
5724 | p += xsnprintf (p, endp - p, "vCont"); |
5725 | ||
79d7f229 | 5726 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5727 | { |
79d7f229 PA |
5728 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5729 | so we don't have any TID numbers the inferior will | |
5730 | understand. Make sure to only send forms that do not specify | |
5731 | a TID. */ | |
a9cbf802 | 5732 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5733 | } |
0d8f58ca | 5734 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5735 | { |
0d8f58ca PA |
5736 | /* Resume all threads (of all processes, or of a single |
5737 | process), with preference for INFERIOR_PTID. This assumes | |
5738 | inferior_ptid belongs to the set of all threads we are about | |
5739 | to resume. */ | |
a493e3e2 | 5740 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5741 | { |
0d8f58ca PA |
5742 | /* Step inferior_ptid, with or without signal. */ |
5743 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5744 | } |
0d8f58ca | 5745 | |
e5ef252a PA |
5746 | /* Also pass down any pending signaled resumption for other |
5747 | threads not the current. */ | |
5748 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5749 | ||
0d8f58ca | 5750 | /* And continue others without a signal. */ |
a493e3e2 | 5751 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5752 | } |
5753 | else | |
506fb367 DJ |
5754 | { |
5755 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5756 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5757 | } |
c906108c | 5758 | |
82f73884 PA |
5759 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5760 | putpkt (rs->buf); | |
506fb367 | 5761 | |
6efcd9a8 | 5762 | if (target_is_non_stop_p ()) |
74531fed PA |
5763 | { |
5764 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5765 | reply will be reported asynchronously by means of a `%Stop' | |
5766 | notification. */ | |
5767 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5768 | if (strcmp (rs->buf, "OK") != 0) | |
5769 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5770 | } | |
5771 | ||
506fb367 | 5772 | return 1; |
c906108c | 5773 | } |
43ff13b4 | 5774 | |
506fb367 DJ |
5775 | /* Tell the remote machine to resume. */ |
5776 | ||
43ff13b4 | 5777 | static void |
28439f5e | 5778 | remote_resume (struct target_ops *ops, |
2ea28649 | 5779 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5780 | { |
d01949b6 | 5781 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 5782 | |
85ad3aaf PA |
5783 | /* When connected in non-stop mode, the core resumes threads |
5784 | individually. Resuming remote threads directly in target_resume | |
5785 | would thus result in sending one packet per thread. Instead, to | |
5786 | minimize roundtrip latency, here we just store the resume | |
5787 | request; the actual remote resumption will be done in | |
5788 | target_commit_resume / remote_commit_resume, where we'll be able | |
5789 | to do vCont action coalescing. */ | |
5790 | if (target_is_non_stop_p () && execution_direction != EXEC_REVERSE) | |
5791 | { | |
5792 | struct private_thread_info *remote_thr; | |
5793 | ||
5794 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
5795 | remote_thr = get_private_info_ptid (inferior_ptid); | |
5796 | else | |
5797 | remote_thr = get_private_info_ptid (ptid); | |
5798 | remote_thr->last_resume_step = step; | |
5799 | remote_thr->last_resume_sig = siggnal; | |
5800 | return; | |
5801 | } | |
5802 | ||
722247f1 YQ |
5803 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5804 | (explained in remote-notif.c:handle_notification) so | |
5805 | remote_notif_process is not called. We need find a place where | |
5806 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5807 | before resuming inferior, because inferior was stopped and no RSP | |
5808 | traffic at that moment. */ | |
6efcd9a8 | 5809 | if (!target_is_non_stop_p ()) |
5965e028 | 5810 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5811 | |
3a00c802 PA |
5812 | rs->last_resume_exec_dir = execution_direction; |
5813 | ||
7b68ffbb PA |
5814 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
5815 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
5816 | remote_resume_with_hc (ops, ptid, step, siggnal); | |
43ff13b4 | 5817 | |
2acceee2 | 5818 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5819 | with the event loop. NOTE: this is the one place where all the |
5820 | execution commands end up. We could alternatively do this in each | |
23860348 | 5821 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5822 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5823 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5824 | NOT asynchronously. */ |
362646f5 | 5825 | if (target_can_async_p ()) |
6a3753b3 | 5826 | target_async (1); |
e24a49d8 PA |
5827 | |
5828 | /* We've just told the target to resume. The remote server will | |
5829 | wait for the inferior to stop, and then send a stop reply. In | |
5830 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5831 | because the stub wouldn't be ready to process it. This applies |
5832 | only to the base all-stop protocol, however. In non-stop (which | |
5833 | only supports vCont), the stub replies with an "OK", and is | |
5834 | immediate able to process further serial input. */ | |
6efcd9a8 | 5835 | if (!target_is_non_stop_p ()) |
74531fed | 5836 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5837 | } |
85ad3aaf PA |
5838 | |
5839 | static void check_pending_events_prevent_wildcard_vcont | |
5840 | (int *may_global_wildcard_vcont); | |
5841 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
5842 | ||
5843 | /* Private per-inferior info for target remote processes. */ | |
5844 | ||
5845 | struct private_inferior | |
5846 | { | |
5847 | /* Whether we can send a wildcard vCont for this process. */ | |
5848 | int may_wildcard_vcont; | |
5849 | }; | |
5850 | ||
5851 | /* Structure used to track the construction of a vCont packet in the | |
5852 | outgoing packet buffer. This is used to send multiple vCont | |
5853 | packets if we have more actions than would fit a single packet. */ | |
5854 | ||
5855 | struct vcont_builder | |
5856 | { | |
5857 | /* Pointer to the first action. P points here if no action has been | |
5858 | appended yet. */ | |
5859 | char *first_action; | |
5860 | ||
5861 | /* Where the next action will be appended. */ | |
5862 | char *p; | |
5863 | ||
5864 | /* The end of the buffer. Must never write past this. */ | |
5865 | char *endp; | |
5866 | }; | |
5867 | ||
5868 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
5869 | ||
5870 | static void | |
5871 | vcont_builder_restart (struct vcont_builder *builder) | |
5872 | { | |
5873 | struct remote_state *rs = get_remote_state (); | |
5874 | ||
5875 | builder->p = rs->buf; | |
5876 | builder->endp = rs->buf + get_remote_packet_size (); | |
5877 | builder->p += xsnprintf (builder->p, builder->endp - builder->p, "vCont"); | |
5878 | builder->first_action = builder->p; | |
5879 | } | |
5880 | ||
5881 | /* If the vCont packet being built has any action, send it to the | |
5882 | remote end. */ | |
5883 | ||
5884 | static void | |
5885 | vcont_builder_flush (struct vcont_builder *builder) | |
5886 | { | |
5887 | struct remote_state *rs; | |
5888 | ||
5889 | if (builder->p == builder->first_action) | |
5890 | return; | |
5891 | ||
5892 | rs = get_remote_state (); | |
5893 | putpkt (rs->buf); | |
5894 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5895 | if (strcmp (rs->buf, "OK") != 0) | |
5896 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5897 | } | |
5898 | ||
5899 | /* The largest action is range-stepping, with its two addresses. This | |
5900 | is more than sufficient. If a new, bigger action is created, it'll | |
5901 | quickly trigger a failed assertion in append_resumption (and we'll | |
5902 | just bump this). */ | |
5903 | #define MAX_ACTION_SIZE 200 | |
5904 | ||
5905 | /* Append a new vCont action in the outgoing packet being built. If | |
5906 | the action doesn't fit the packet along with previous actions, push | |
5907 | what we've got so far to the remote end and start over a new vCont | |
5908 | packet (with the new action). */ | |
5909 | ||
5910 | static void | |
5911 | vcont_builder_push_action (struct vcont_builder *builder, | |
5912 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5913 | { | |
5914 | char buf[MAX_ACTION_SIZE + 1]; | |
5915 | char *endp; | |
5916 | size_t rsize; | |
5917 | ||
5918 | endp = append_resumption (buf, buf + sizeof (buf), | |
5919 | ptid, step, siggnal); | |
5920 | ||
5921 | /* Check whether this new action would fit in the vCont packet along | |
5922 | with previous actions. If not, send what we've got so far and | |
5923 | start a new vCont packet. */ | |
5924 | rsize = endp - buf; | |
5925 | if (rsize > builder->endp - builder->p) | |
5926 | { | |
5927 | vcont_builder_flush (builder); | |
5928 | vcont_builder_restart (builder); | |
5929 | ||
5930 | /* Should now fit. */ | |
5931 | gdb_assert (rsize <= builder->endp - builder->p); | |
5932 | } | |
5933 | ||
5934 | memcpy (builder->p, buf, rsize); | |
5935 | builder->p += rsize; | |
5936 | *builder->p = '\0'; | |
5937 | } | |
5938 | ||
5939 | /* to_commit_resume implementation. */ | |
5940 | ||
5941 | static void | |
5942 | remote_commit_resume (struct target_ops *ops) | |
5943 | { | |
5944 | struct remote_state *rs = get_remote_state (); | |
5945 | struct inferior *inf; | |
5946 | struct thread_info *tp; | |
5947 | int any_process_wildcard; | |
5948 | int may_global_wildcard_vcont; | |
5949 | struct vcont_builder vcont_builder; | |
5950 | ||
5951 | /* If connected in all-stop mode, we'd send the remote resume | |
5952 | request directly from remote_resume. Likewise if | |
5953 | reverse-debugging, as there are no defined vCont actions for | |
5954 | reverse execution. */ | |
5955 | if (!target_is_non_stop_p () || execution_direction == EXEC_REVERSE) | |
5956 | return; | |
5957 | ||
5958 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
5959 | instead of resuming all threads of each process individually. | |
5960 | However, if any thread of a process must remain halted, we can't | |
5961 | send wildcard resumes and must send one action per thread. | |
5962 | ||
5963 | Care must be taken to not resume threads/processes the server | |
5964 | side already told us are stopped, but the core doesn't know about | |
5965 | yet, because the events are still in the vStopped notification | |
5966 | queue. For example: | |
5967 | ||
5968 | #1 => vCont s:p1.1;c | |
5969 | #2 <= OK | |
5970 | #3 <= %Stopped T05 p1.1 | |
5971 | #4 => vStopped | |
5972 | #5 <= T05 p1.2 | |
5973 | #6 => vStopped | |
5974 | #7 <= OK | |
5975 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
5976 | #9 => vCont s:p1.1;c | |
5977 | ||
5978 | The last vCont above would resume thread p1.2 by mistake, because | |
5979 | the server has no idea that the event for p1.2 had not been | |
5980 | handled yet. | |
5981 | ||
5982 | The server side must similarly ignore resume actions for the | |
5983 | thread that has a pending %Stopped notification (and any other | |
5984 | threads with events pending), until GDB acks the notification | |
5985 | with vStopped. Otherwise, e.g., the following case is | |
5986 | mishandled: | |
5987 | ||
5988 | #1 => g (or any other packet) | |
5989 | #2 <= [registers] | |
5990 | #3 <= %Stopped T05 p1.2 | |
5991 | #4 => vCont s:p1.1;c | |
5992 | #5 <= OK | |
5993 | ||
5994 | Above, the server must not resume thread p1.2. GDB can't know | |
5995 | that p1.2 stopped until it acks the %Stopped notification, and | |
5996 | since from GDB's perspective all threads should be running, it | |
5997 | sends a "c" action. | |
5998 | ||
5999 | Finally, special care must also be given to handling fork/vfork | |
6000 | events. A (v)fork event actually tells us that two processes | |
6001 | stopped -- the parent and the child. Until we follow the fork, | |
6002 | we must not resume the child. Therefore, if we have a pending | |
6003 | fork follow, we must not send a global wildcard resume action | |
6004 | (vCont;c). We can still send process-wide wildcards though. */ | |
6005 | ||
6006 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6007 | may_global_wildcard_vcont = 1; | |
6008 | ||
6009 | /* And assume every process is individually wildcard-able too. */ | |
6010 | ALL_NON_EXITED_INFERIORS (inf) | |
6011 | { | |
6012 | if (inf->priv == NULL) | |
6013 | inf->priv = XNEW (struct private_inferior); | |
6014 | inf->priv->may_wildcard_vcont = 1; | |
6015 | } | |
6016 | ||
6017 | /* Check for any pending events (not reported or processed yet) and | |
6018 | disable process and global wildcard resumes appropriately. */ | |
6019 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6020 | ||
6021 | ALL_NON_EXITED_THREADS (tp) | |
6022 | { | |
6023 | /* If a thread of a process is not meant to be resumed, then we | |
6024 | can't wildcard that process. */ | |
6025 | if (!tp->executing) | |
6026 | { | |
6027 | tp->inf->priv->may_wildcard_vcont = 0; | |
6028 | ||
6029 | /* And if we can't wildcard a process, we can't wildcard | |
6030 | everything either. */ | |
6031 | may_global_wildcard_vcont = 0; | |
6032 | continue; | |
6033 | } | |
6034 | ||
6035 | /* If a thread is the parent of an unfollowed fork, then we | |
6036 | can't do a global wildcard, as that would resume the fork | |
6037 | child. */ | |
6038 | if (is_pending_fork_parent_thread (tp)) | |
6039 | may_global_wildcard_vcont = 0; | |
6040 | } | |
6041 | ||
6042 | /* Now let's build the vCont packet(s). Actions must be appended | |
6043 | from narrower to wider scopes (thread -> process -> global). If | |
6044 | we end up with too many actions for a single packet vcont_builder | |
6045 | flushes the current vCont packet to the remote side and starts a | |
6046 | new one. */ | |
6047 | vcont_builder_restart (&vcont_builder); | |
6048 | ||
6049 | /* Threads first. */ | |
6050 | ALL_NON_EXITED_THREADS (tp) | |
6051 | { | |
6052 | struct private_thread_info *remote_thr = tp->priv; | |
6053 | ||
6054 | if (!tp->executing || remote_thr->vcont_resumed) | |
6055 | continue; | |
6056 | ||
6057 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6058 | ||
6059 | if (!remote_thr->last_resume_step | |
6060 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
6061 | && tp->inf->priv->may_wildcard_vcont) | |
6062 | { | |
6063 | /* We'll send a wildcard resume instead. */ | |
6064 | remote_thr->vcont_resumed = 1; | |
6065 | continue; | |
6066 | } | |
6067 | ||
6068 | vcont_builder_push_action (&vcont_builder, tp->ptid, | |
6069 | remote_thr->last_resume_step, | |
6070 | remote_thr->last_resume_sig); | |
6071 | remote_thr->vcont_resumed = 1; | |
6072 | } | |
6073 | ||
6074 | /* Now check whether we can send any process-wide wildcard. This is | |
6075 | to avoid sending a global wildcard in the case nothing is | |
6076 | supposed to be resumed. */ | |
6077 | any_process_wildcard = 0; | |
6078 | ||
6079 | ALL_NON_EXITED_INFERIORS (inf) | |
6080 | { | |
6081 | if (inf->priv->may_wildcard_vcont) | |
6082 | { | |
6083 | any_process_wildcard = 1; | |
6084 | break; | |
6085 | } | |
6086 | } | |
6087 | ||
6088 | if (any_process_wildcard) | |
6089 | { | |
6090 | /* If all processes are wildcard-able, then send a single "c" | |
6091 | action, otherwise, send an "all (-1) threads of process" | |
6092 | continue action for each running process, if any. */ | |
6093 | if (may_global_wildcard_vcont) | |
6094 | { | |
6095 | vcont_builder_push_action (&vcont_builder, minus_one_ptid, | |
6096 | 0, GDB_SIGNAL_0); | |
6097 | } | |
6098 | else | |
6099 | { | |
6100 | ALL_NON_EXITED_INFERIORS (inf) | |
6101 | { | |
6102 | if (inf->priv->may_wildcard_vcont) | |
6103 | { | |
6104 | vcont_builder_push_action (&vcont_builder, | |
6105 | pid_to_ptid (inf->pid), | |
6106 | 0, GDB_SIGNAL_0); | |
6107 | } | |
6108 | } | |
6109 | } | |
6110 | } | |
6111 | ||
6112 | vcont_builder_flush (&vcont_builder); | |
6113 | } | |
6114 | ||
c906108c | 6115 | \f |
43ff13b4 | 6116 | |
74531fed PA |
6117 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6118 | thread, all threads of a remote process, or all threads of all | |
6119 | processes. */ | |
6120 | ||
6121 | static void | |
6122 | remote_stop_ns (ptid_t ptid) | |
6123 | { | |
6124 | struct remote_state *rs = get_remote_state (); | |
6125 | char *p = rs->buf; | |
6126 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6127 | |
4082afcc | 6128 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6129 | remote_vcont_probe (rs); |
6130 | ||
d458bd84 | 6131 | if (!rs->supports_vCont.t) |
74531fed PA |
6132 | error (_("Remote server does not support stopping threads")); |
6133 | ||
f91d3df5 PA |
6134 | if (ptid_equal (ptid, minus_one_ptid) |
6135 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6136 | p += xsnprintf (p, endp - p, "vCont;t"); |
6137 | else | |
6138 | { | |
6139 | ptid_t nptid; | |
6140 | ||
74531fed PA |
6141 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6142 | ||
6143 | if (ptid_is_pid (ptid)) | |
6144 | /* All (-1) threads of process. */ | |
ba348170 | 6145 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6146 | else |
6147 | { | |
6148 | /* Small optimization: if we already have a stop reply for | |
6149 | this thread, no use in telling the stub we want this | |
6150 | stopped. */ | |
6151 | if (peek_stop_reply (ptid)) | |
6152 | return; | |
6153 | ||
6154 | nptid = ptid; | |
6155 | } | |
6156 | ||
a9cbf802 | 6157 | write_ptid (p, endp, nptid); |
74531fed PA |
6158 | } |
6159 | ||
6160 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6161 | come in asynchronously by notification. */ | |
6162 | putpkt (rs->buf); | |
6163 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6164 | if (strcmp (rs->buf, "OK") != 0) | |
6165 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6166 | } | |
6167 | ||
bfedc46a PA |
6168 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6169 | interrupt the remote target. It is undefined which thread of which | |
6170 | process reports the interrupt. */ | |
74531fed PA |
6171 | |
6172 | static void | |
de979965 | 6173 | remote_interrupt_as (void) |
74531fed PA |
6174 | { |
6175 | struct remote_state *rs = get_remote_state (); | |
6176 | ||
3a29589a DJ |
6177 | rs->ctrlc_pending_p = 1; |
6178 | ||
74531fed PA |
6179 | /* If the inferior is stopped already, but the core didn't know |
6180 | about it yet, just ignore the request. The cached wait status | |
6181 | will be collected in remote_wait. */ | |
6182 | if (rs->cached_wait_status) | |
6183 | return; | |
6184 | ||
9a7071a8 JB |
6185 | /* Send interrupt_sequence to remote target. */ |
6186 | send_interrupt_sequence (); | |
74531fed PA |
6187 | } |
6188 | ||
de979965 PA |
6189 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6190 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6191 | reports the interrupt. Throws an error if the packet is not |
6192 | supported by the server. */ | |
de979965 | 6193 | |
e42de8c7 | 6194 | static void |
de979965 PA |
6195 | remote_interrupt_ns (void) |
6196 | { | |
6197 | struct remote_state *rs = get_remote_state (); | |
6198 | char *p = rs->buf; | |
6199 | char *endp = rs->buf + get_remote_packet_size (); | |
6200 | ||
6201 | xsnprintf (p, endp - p, "vCtrlC"); | |
6202 | ||
6203 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6204 | come in asynchronously by notification. */ | |
6205 | putpkt (rs->buf); | |
6206 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6207 | ||
6208 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6209 | { | |
6210 | case PACKET_OK: | |
6211 | break; | |
6212 | case PACKET_UNKNOWN: | |
e42de8c7 | 6213 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6214 | case PACKET_ERROR: |
6215 | error (_("Interrupting target failed: %s"), rs->buf); | |
6216 | } | |
de979965 PA |
6217 | } |
6218 | ||
bfedc46a | 6219 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6220 | |
c906108c | 6221 | static void |
1eab8a48 | 6222 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 6223 | { |
7a292a7a | 6224 | if (remote_debug) |
0f71a2f6 | 6225 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6226 | |
6efcd9a8 | 6227 | if (target_is_non_stop_p ()) |
74531fed | 6228 | remote_stop_ns (ptid); |
c906108c | 6229 | else |
bfedc46a PA |
6230 | { |
6231 | /* We don't currently have a way to transparently pause the | |
6232 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6233 | remote_interrupt_as (); |
bfedc46a PA |
6234 | } |
6235 | } | |
6236 | ||
6237 | /* Implement the to_interrupt function for the remote targets. */ | |
6238 | ||
6239 | static void | |
6240 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
6241 | { | |
e42de8c7 PA |
6242 | struct remote_state *rs = get_remote_state (); |
6243 | ||
bfedc46a PA |
6244 | if (remote_debug) |
6245 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6246 | ||
e42de8c7 PA |
6247 | if (target_is_non_stop_p ()) |
6248 | remote_interrupt_ns (); | |
bfedc46a | 6249 | else |
e42de8c7 | 6250 | remote_interrupt_as (); |
c906108c SS |
6251 | } |
6252 | ||
93692b58 PA |
6253 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6254 | ||
6255 | static void | |
6256 | remote_pass_ctrlc (struct target_ops *self) | |
6257 | { | |
6258 | struct remote_state *rs = get_remote_state (); | |
6259 | ||
6260 | if (remote_debug) | |
6261 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6262 | ||
6263 | /* If we're starting up, we're not fully synced yet. Quit | |
6264 | immediately. */ | |
6265 | if (rs->starting_up) | |
6266 | quit (); | |
6267 | /* If ^C has already been sent once, offer to disconnect. */ | |
6268 | else if (rs->ctrlc_pending_p) | |
6269 | interrupt_query (); | |
6270 | else | |
6271 | target_interrupt (inferior_ptid); | |
6272 | } | |
6273 | ||
c906108c SS |
6274 | /* Ask the user what to do when an interrupt is received. */ |
6275 | ||
6276 | static void | |
fba45db2 | 6277 | interrupt_query (void) |
c906108c | 6278 | { |
abc56d60 | 6279 | struct remote_state *rs = get_remote_state (); |
c906108c | 6280 | |
abc56d60 | 6281 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6282 | { |
abc56d60 PA |
6283 | if (query (_("The target is not responding to interrupt requests.\n" |
6284 | "Stop debugging it? "))) | |
74531fed | 6285 | { |
78a095c3 | 6286 | remote_unpush_target (); |
abc56d60 | 6287 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6288 | } |
6289 | } | |
abc56d60 PA |
6290 | else |
6291 | { | |
6292 | if (query (_("Interrupted while waiting for the program.\n" | |
6293 | "Give up waiting? "))) | |
6294 | quit (); | |
6295 | } | |
c906108c SS |
6296 | } |
6297 | ||
6426a772 JM |
6298 | /* Enable/disable target terminal ownership. Most targets can use |
6299 | terminal groups to control terminal ownership. Remote targets are | |
6300 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6301 | is required. */ |
6426a772 JM |
6302 | |
6303 | static void | |
d2f640d4 | 6304 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 6305 | { |
223ffa71 | 6306 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal::*() |
d9d2d8b6 PA |
6307 | idempotent. The event-loop GDB talking to an asynchronous target |
6308 | with a synchronous command calls this function from both | |
6309 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
6310 | transfer the terminal to the target when it shouldn't this guard | |
6311 | can go away. */ | |
6426a772 JM |
6312 | if (!remote_async_terminal_ours_p) |
6313 | return; | |
6426a772 | 6314 | remote_async_terminal_ours_p = 0; |
6426a772 JM |
6315 | /* NOTE: At this point we could also register our selves as the |
6316 | recipient of all input. Any characters typed could then be | |
23860348 | 6317 | passed on down to the target. */ |
6426a772 JM |
6318 | } |
6319 | ||
6320 | static void | |
e3594fd1 | 6321 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 6322 | { |
75c99385 | 6323 | /* See FIXME in remote_terminal_inferior. */ |
6426a772 JM |
6324 | if (remote_async_terminal_ours_p) |
6325 | return; | |
6426a772 JM |
6326 | remote_async_terminal_ours_p = 1; |
6327 | } | |
6328 | ||
176a6961 | 6329 | static void |
917317f4 | 6330 | remote_console_output (char *msg) |
c906108c SS |
6331 | { |
6332 | char *p; | |
6333 | ||
c5aa993b | 6334 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6335 | { |
6336 | char tb[2]; | |
6337 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6338 | |
c906108c SS |
6339 | tb[0] = c; |
6340 | tb[1] = 0; | |
43ff13b4 | 6341 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6342 | } |
00db5b94 PA |
6343 | gdb_flush (gdb_stdtarg); |
6344 | } | |
74531fed | 6345 | |
74531fed PA |
6346 | DEF_VEC_O(cached_reg_t); |
6347 | ||
722247f1 | 6348 | typedef struct stop_reply |
74531fed | 6349 | { |
722247f1 | 6350 | struct notif_event base; |
74531fed | 6351 | |
722247f1 | 6352 | /* The identifier of the thread about this event */ |
74531fed PA |
6353 | ptid_t ptid; |
6354 | ||
340e3c99 | 6355 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6356 | connection, represented by a remote_state object, is closed, |
6357 | all the associated stop_reply events should be released. */ | |
6358 | struct remote_state *rs; | |
6359 | ||
74531fed PA |
6360 | struct target_waitstatus ws; |
6361 | ||
5cd63fda PA |
6362 | /* The architecture associated with the expedited registers. */ |
6363 | gdbarch *arch; | |
6364 | ||
15148d6a PA |
6365 | /* Expedited registers. This makes remote debugging a bit more |
6366 | efficient for those targets that provide critical registers as | |
6367 | part of their normal status mechanism (as another roundtrip to | |
6368 | fetch them is avoided). */ | |
74531fed PA |
6369 | VEC(cached_reg_t) *regcache; |
6370 | ||
f7e6eed5 PA |
6371 | enum target_stop_reason stop_reason; |
6372 | ||
74531fed PA |
6373 | CORE_ADDR watch_data_address; |
6374 | ||
dc146f7c | 6375 | int core; |
722247f1 | 6376 | } *stop_reply_p; |
a744cf53 | 6377 | |
722247f1 YQ |
6378 | DECLARE_QUEUE_P (stop_reply_p); |
6379 | DEFINE_QUEUE_P (stop_reply_p); | |
6380 | /* The list of already fetched and acknowledged stop events. This | |
6381 | queue is used for notification Stop, and other notifications | |
6382 | don't need queue for their events, because the notification events | |
6383 | of Stop can't be consumed immediately, so that events should be | |
6384 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6385 | time. Other notifications can consume their events immediately, | |
6386 | so queue is not needed for them. */ | |
6387 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6388 | |
6389 | static void | |
6390 | stop_reply_xfree (struct stop_reply *r) | |
6391 | { | |
f48ff2a7 | 6392 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6393 | } |
6394 | ||
221e1a37 PA |
6395 | /* Return the length of the stop reply queue. */ |
6396 | ||
6397 | static int | |
6398 | stop_reply_queue_length (void) | |
6399 | { | |
6400 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6401 | } | |
6402 | ||
722247f1 YQ |
6403 | static void |
6404 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6405 | struct notif_event *event) | |
6406 | { | |
6407 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6408 | } | |
6409 | ||
6410 | static void | |
6411 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6412 | struct notif_event *event) | |
6413 | { | |
6414 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6415 | ||
6416 | /* acknowledge */ | |
f5c4fcd9 | 6417 | putpkt (self->ack_command); |
722247f1 YQ |
6418 | |
6419 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6420 | /* We got an unknown stop reply. */ | |
6421 | error (_("Unknown stop reply")); | |
6422 | ||
6423 | push_stop_reply (stop_reply); | |
6424 | } | |
6425 | ||
6426 | static int | |
6427 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6428 | { | |
6429 | /* We can't get pending events in remote_notif_process for | |
6430 | notification stop, and we have to do this in remote_wait_ns | |
6431 | instead. If we fetch all queued events from stub, remote stub | |
6432 | may exit and we have no chance to process them back in | |
6433 | remote_wait_ns. */ | |
6434 | mark_async_event_handler (remote_async_inferior_event_token); | |
6435 | return 0; | |
6436 | } | |
6437 | ||
6438 | static void | |
6439 | stop_reply_dtr (struct notif_event *event) | |
6440 | { | |
6441 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6442 | cached_reg_t *reg; |
6443 | int ix; | |
6444 | ||
6445 | for (ix = 0; | |
6446 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6447 | ix++) | |
6448 | xfree (reg->data); | |
722247f1 YQ |
6449 | |
6450 | VEC_free (cached_reg_t, r->regcache); | |
6451 | } | |
6452 | ||
6453 | static struct notif_event * | |
6454 | remote_notif_stop_alloc_reply (void) | |
6455 | { | |
8d749320 SM |
6456 | /* We cast to a pointer to the "base class". */ |
6457 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6458 | |
6459 | r->dtr = stop_reply_dtr; | |
6460 | ||
6461 | return r; | |
6462 | } | |
6463 | ||
6464 | /* A client of notification Stop. */ | |
6465 | ||
6466 | struct notif_client notif_client_stop = | |
6467 | { | |
6468 | "Stop", | |
6469 | "vStopped", | |
6470 | remote_notif_stop_parse, | |
6471 | remote_notif_stop_ack, | |
6472 | remote_notif_stop_can_get_pending_events, | |
6473 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6474 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6475 | }; |
6476 | ||
6477 | /* A parameter to pass data in and out. */ | |
6478 | ||
6479 | struct queue_iter_param | |
6480 | { | |
6481 | void *input; | |
6482 | struct stop_reply *output; | |
6483 | }; | |
6484 | ||
85ad3aaf | 6485 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6486 | the pid of the process that owns the threads we want to check, or |
6487 | -1 if we want to check all threads. */ | |
6488 | ||
6489 | static int | |
6490 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6491 | ptid_t thread_ptid) | |
6492 | { | |
6493 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6494 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6495 | { | |
6496 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6497 | return 1; | |
6498 | } | |
6499 | ||
6500 | return 0; | |
6501 | } | |
6502 | ||
85ad3aaf PA |
6503 | /* Return the thread's pending status used to determine whether the |
6504 | thread is a fork parent stopped at a fork event. */ | |
6505 | ||
6506 | static struct target_waitstatus * | |
6507 | thread_pending_fork_status (struct thread_info *thread) | |
6508 | { | |
6509 | if (thread->suspend.waitstatus_pending_p) | |
6510 | return &thread->suspend.waitstatus; | |
6511 | else | |
6512 | return &thread->pending_follow; | |
6513 | } | |
6514 | ||
6515 | /* Determine if THREAD is a pending fork parent thread. */ | |
6516 | ||
6517 | static int | |
6518 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6519 | { | |
6520 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6521 | int pid = -1; | |
6522 | ||
6523 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6524 | } | |
6525 | ||
cbb8991c DB |
6526 | /* Check whether EVENT is a fork event, and if it is, remove the |
6527 | fork child from the context list passed in DATA. */ | |
6528 | ||
6529 | static int | |
6530 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6531 | QUEUE_ITER (stop_reply_p) *iter, | |
6532 | stop_reply_p event, | |
6533 | void *data) | |
6534 | { | |
19ba03f4 SM |
6535 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6536 | struct threads_listing_context *context | |
6537 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6538 | |
6539 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6540 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6541 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6542 | threads_listing_context_remove (&event->ws, context); | |
cbb8991c DB |
6543 | |
6544 | return 1; | |
6545 | } | |
6546 | ||
6547 | /* If CONTEXT contains any fork child threads that have not been | |
6548 | reported yet, remove them from the CONTEXT list. If such a | |
6549 | thread exists it is because we are stopped at a fork catchpoint | |
6550 | and have not yet called follow_fork, which will set up the | |
6551 | host-side data structures for the new process. */ | |
6552 | ||
6553 | static void | |
6554 | remove_new_fork_children (struct threads_listing_context *context) | |
6555 | { | |
6556 | struct thread_info * thread; | |
6557 | int pid = -1; | |
6558 | struct notif_client *notif = ¬if_client_stop; | |
6559 | struct queue_iter_param param; | |
6560 | ||
6561 | /* For any threads stopped at a fork event, remove the corresponding | |
6562 | fork child threads from the CONTEXT list. */ | |
6563 | ALL_NON_EXITED_THREADS (thread) | |
6564 | { | |
85ad3aaf | 6565 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6566 | |
6567 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
6568 | { | |
6569 | threads_listing_context_remove (ws, context); | |
6570 | } | |
6571 | } | |
6572 | ||
6573 | /* Check for any pending fork events (not reported or processed yet) | |
6574 | in process PID and remove those fork child threads from the | |
6575 | CONTEXT list as well. */ | |
6576 | remote_notif_get_pending_events (notif); | |
6577 | param.input = context; | |
6578 | param.output = NULL; | |
6579 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6580 | remove_child_of_pending_fork, ¶m); | |
6581 | } | |
6582 | ||
85ad3aaf PA |
6583 | /* Check whether EVENT would prevent a global or process wildcard |
6584 | vCont action. */ | |
6585 | ||
6586 | static int | |
6587 | check_pending_event_prevents_wildcard_vcont_callback | |
6588 | (QUEUE (stop_reply_p) *q, | |
6589 | QUEUE_ITER (stop_reply_p) *iter, | |
6590 | stop_reply_p event, | |
6591 | void *data) | |
6592 | { | |
6593 | struct inferior *inf; | |
6594 | int *may_global_wildcard_vcont = (int *) data; | |
6595 | ||
6596 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6597 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6598 | return 1; | |
6599 | ||
6600 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6601 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6602 | *may_global_wildcard_vcont = 0; | |
6603 | ||
6604 | inf = find_inferior_ptid (event->ptid); | |
6605 | ||
6606 | /* This may be the first time we heard about this process. | |
6607 | Regardless, we must not do a global wildcard resume, otherwise | |
6608 | we'd resume this process too. */ | |
6609 | *may_global_wildcard_vcont = 0; | |
6610 | if (inf != NULL) | |
6611 | inf->priv->may_wildcard_vcont = 0; | |
6612 | ||
6613 | return 1; | |
6614 | } | |
6615 | ||
6616 | /* Check whether any event pending in the vStopped queue would prevent | |
6617 | a global or process wildcard vCont action. Clear | |
6618 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6619 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6620 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6621 | ||
6622 | static void | |
6623 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6624 | { | |
6625 | struct notif_client *notif = ¬if_client_stop; | |
6626 | ||
6627 | remote_notif_get_pending_events (notif); | |
6628 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6629 | check_pending_event_prevents_wildcard_vcont_callback, | |
6630 | may_global_wildcard); | |
6631 | } | |
6632 | ||
f48ff2a7 YQ |
6633 | /* Remove stop replies in the queue if its pid is equal to the given |
6634 | inferior's pid. */ | |
722247f1 YQ |
6635 | |
6636 | static int | |
f48ff2a7 YQ |
6637 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6638 | QUEUE_ITER (stop_reply_p) *iter, | |
6639 | stop_reply_p event, | |
6640 | void *data) | |
722247f1 | 6641 | { |
19ba03f4 SM |
6642 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6643 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6644 | |
f48ff2a7 | 6645 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6646 | { |
6647 | stop_reply_xfree (event); | |
6648 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6649 | } | |
6650 | ||
6651 | return 1; | |
6652 | } | |
6653 | ||
f48ff2a7 | 6654 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6655 | |
74531fed | 6656 | static void |
5f4cf0bb | 6657 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6658 | { |
722247f1 | 6659 | struct queue_iter_param param; |
f48ff2a7 YQ |
6660 | struct stop_reply *reply; |
6661 | struct remote_state *rs = get_remote_state (); | |
6662 | struct remote_notif_state *rns = rs->notif_state; | |
6663 | ||
6664 | /* This function can be notified when an inferior exists. When the | |
6665 | target is not remote, the notification state is NULL. */ | |
6666 | if (rs->remote_desc == NULL) | |
6667 | return; | |
6668 | ||
6669 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6670 | |
74531fed | 6671 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6672 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6673 | { |
722247f1 | 6674 | stop_reply_xfree (reply); |
f48ff2a7 | 6675 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6676 | } |
c906108c | 6677 | |
722247f1 YQ |
6678 | param.input = inf; |
6679 | param.output = NULL; | |
74531fed PA |
6680 | /* Discard the stop replies we have already pulled with |
6681 | vStopped. */ | |
722247f1 | 6682 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6683 | remove_stop_reply_for_inferior, ¶m); |
6684 | } | |
6685 | ||
bcc75809 YQ |
6686 | /* If its remote state is equal to the given remote state, |
6687 | remove EVENT from the stop reply queue. */ | |
6688 | ||
6689 | static int | |
6690 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6691 | QUEUE_ITER (stop_reply_p) *iter, | |
6692 | stop_reply_p event, | |
6693 | void *data) | |
6694 | { | |
19ba03f4 SM |
6695 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6696 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6697 | |
6698 | if (event->rs == rs) | |
6699 | { | |
6700 | stop_reply_xfree (event); | |
6701 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6702 | } | |
6703 | ||
6704 | return 1; | |
6705 | } | |
6706 | ||
6707 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6708 | |
6709 | static void | |
bcc75809 | 6710 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6711 | { |
6712 | struct queue_iter_param param; | |
6713 | ||
bcc75809 | 6714 | param.input = rs; |
f48ff2a7 YQ |
6715 | param.output = NULL; |
6716 | /* Discard the stop replies we have already pulled with | |
6717 | vStopped. */ | |
6718 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6719 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6720 | } |
74531fed | 6721 | |
722247f1 YQ |
6722 | /* A parameter to pass data in and out. */ |
6723 | ||
6724 | static int | |
6725 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6726 | QUEUE_ITER (stop_reply_p) *iter, | |
6727 | stop_reply_p event, | |
6728 | void *data) | |
6729 | { | |
19ba03f4 SM |
6730 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6731 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6732 | |
6733 | if (ptid_match (event->ptid, *ptid)) | |
6734 | { | |
6735 | param->output = event; | |
6736 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6737 | return 0; | |
c8e38a49 | 6738 | } |
722247f1 YQ |
6739 | |
6740 | return 1; | |
74531fed | 6741 | } |
43ff13b4 | 6742 | |
722247f1 YQ |
6743 | /* Remove the first reply in 'stop_reply_queue' which matches |
6744 | PTID. */ | |
2e9f7625 | 6745 | |
722247f1 YQ |
6746 | static struct stop_reply * |
6747 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6748 | { |
722247f1 YQ |
6749 | struct queue_iter_param param; |
6750 | ||
6751 | param.input = &ptid; | |
6752 | param.output = NULL; | |
6753 | ||
6754 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6755 | remote_notif_remove_once_on_match, ¶m); | |
6756 | if (notif_debug) | |
6757 | fprintf_unfiltered (gdb_stdlog, | |
6758 | "notif: discard queued event: 'Stop' in %s\n", | |
6759 | target_pid_to_str (ptid)); | |
a744cf53 | 6760 | |
722247f1 | 6761 | return param.output; |
74531fed | 6762 | } |
75c99385 | 6763 | |
74531fed PA |
6764 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6765 | remove it from the queue, and return it. Returns NULL if none is | |
6766 | found. If there are still queued events left to process, tell the | |
6767 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6768 | |
74531fed PA |
6769 | static struct stop_reply * |
6770 | queued_stop_reply (ptid_t ptid) | |
6771 | { | |
722247f1 | 6772 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6773 | |
722247f1 | 6774 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6775 | /* There's still at least an event left. */ |
6776 | mark_async_event_handler (remote_async_inferior_event_token); | |
6777 | ||
722247f1 | 6778 | return r; |
74531fed PA |
6779 | } |
6780 | ||
6781 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6782 | know that we now have at least one queued event left to pass to the | |
6783 | core side, tell the event loop to get back to target_wait soon. */ | |
6784 | ||
6785 | static void | |
6786 | push_stop_reply (struct stop_reply *new_event) | |
6787 | { | |
722247f1 | 6788 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6789 | |
722247f1 YQ |
6790 | if (notif_debug) |
6791 | fprintf_unfiltered (gdb_stdlog, | |
6792 | "notif: push 'Stop' %s to queue %d\n", | |
6793 | target_pid_to_str (new_event->ptid), | |
6794 | QUEUE_length (stop_reply_p, | |
6795 | stop_reply_queue)); | |
74531fed PA |
6796 | |
6797 | mark_async_event_handler (remote_async_inferior_event_token); | |
6798 | } | |
6799 | ||
722247f1 YQ |
6800 | static int |
6801 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6802 | QUEUE_ITER (stop_reply_p) *iter, | |
6803 | struct stop_reply *event, | |
6804 | void *data) | |
6805 | { | |
19ba03f4 | 6806 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6807 | |
6808 | return !(ptid_equal (*ptid, event->ptid) | |
6809 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6810 | } | |
6811 | ||
74531fed PA |
6812 | /* Returns true if we have a stop reply for PTID. */ |
6813 | ||
6814 | static int | |
6815 | peek_stop_reply (ptid_t ptid) | |
6816 | { | |
722247f1 YQ |
6817 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6818 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6819 | } |
6820 | ||
26d56a93 SL |
6821 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6822 | starting with P and ending with PEND matches PREFIX. */ | |
6823 | ||
6824 | static int | |
6825 | strprefix (const char *p, const char *pend, const char *prefix) | |
6826 | { | |
6827 | for ( ; p < pend; p++, prefix++) | |
6828 | if (*p != *prefix) | |
6829 | return 0; | |
6830 | return *prefix == '\0'; | |
6831 | } | |
6832 | ||
74531fed PA |
6833 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6834 | result is stored in EVENT, or throws an error. */ | |
6835 | ||
6836 | static void | |
6837 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6838 | { | |
5cd63fda | 6839 | remote_arch_state *rsa = NULL; |
74531fed | 6840 | ULONGEST addr; |
256642e8 | 6841 | const char *p; |
94585166 | 6842 | int skipregs = 0; |
74531fed PA |
6843 | |
6844 | event->ptid = null_ptid; | |
bcc75809 | 6845 | event->rs = get_remote_state (); |
74531fed PA |
6846 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6847 | event->ws.value.integer = 0; | |
f7e6eed5 | 6848 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6849 | event->regcache = NULL; |
dc146f7c | 6850 | event->core = -1; |
74531fed PA |
6851 | |
6852 | switch (buf[0]) | |
6853 | { | |
6854 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6855 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6856 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6857 | ss = signal number | |
6858 | n... = register number | |
6859 | r... = register contents | |
6860 | */ | |
6861 | ||
6862 | p = &buf[3]; /* after Txx */ | |
6863 | while (*p) | |
6864 | { | |
256642e8 | 6865 | const char *p1; |
cea39f65 | 6866 | int fieldsize; |
43ff13b4 | 6867 | |
1f10ba14 PA |
6868 | p1 = strchr (p, ':'); |
6869 | if (p1 == NULL) | |
6870 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6871 | Packet: '%s'\n"), | |
6872 | p, buf); | |
6873 | if (p == p1) | |
6874 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6875 | Packet: '%s'\n"), | |
6876 | p, buf); | |
3c3bea1c | 6877 | |
1f10ba14 PA |
6878 | /* Some "registers" are actually extended stop information. |
6879 | Note if you're adding a new entry here: GDB 7.9 and | |
6880 | earlier assume that all register "numbers" that start | |
6881 | with an hex digit are real register numbers. Make sure | |
6882 | the server only sends such a packet if it knows the | |
6883 | client understands it. */ | |
c8e38a49 | 6884 | |
26d56a93 | 6885 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6886 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6887 | else if (strprefix (p, p1, "syscall_entry")) |
6888 | { | |
6889 | ULONGEST sysno; | |
6890 | ||
6891 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6892 | p = unpack_varlen_hex (++p1, &sysno); | |
6893 | event->ws.value.syscall_number = (int) sysno; | |
6894 | } | |
6895 | else if (strprefix (p, p1, "syscall_return")) | |
6896 | { | |
6897 | ULONGEST sysno; | |
6898 | ||
6899 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6900 | p = unpack_varlen_hex (++p1, &sysno); | |
6901 | event->ws.value.syscall_number = (int) sysno; | |
6902 | } | |
26d56a93 SL |
6903 | else if (strprefix (p, p1, "watch") |
6904 | || strprefix (p, p1, "rwatch") | |
6905 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6906 | { |
f7e6eed5 | 6907 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6908 | p = unpack_varlen_hex (++p1, &addr); |
6909 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6910 | } |
26d56a93 | 6911 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6912 | { |
6913 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6914 | ||
6915 | /* Make sure the stub doesn't forget to indicate support | |
6916 | with qSupported. */ | |
6917 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6918 | error (_("Unexpected swbreak stop reason")); | |
6919 | ||
6920 | /* The value part is documented as "must be empty", | |
6921 | though we ignore it, in case we ever decide to make | |
6922 | use of it in a backward compatible way. */ | |
8424cc97 | 6923 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6924 | } |
26d56a93 | 6925 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6926 | { |
6927 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6928 | ||
6929 | /* Make sure the stub doesn't forget to indicate support | |
6930 | with qSupported. */ | |
6931 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6932 | error (_("Unexpected hwbreak stop reason")); | |
6933 | ||
6934 | /* See above. */ | |
8424cc97 | 6935 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6936 | } |
26d56a93 | 6937 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6938 | { |
1f10ba14 | 6939 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 6940 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6941 | } |
26d56a93 | 6942 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6943 | { |
6944 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6945 | /* p1 will indicate "begin" or "end", but it makes | |
6946 | no difference for now, so ignore it. */ | |
8424cc97 | 6947 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6948 | } |
26d56a93 | 6949 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6950 | { |
6951 | ULONGEST c; | |
a744cf53 | 6952 | |
1f10ba14 PA |
6953 | p = unpack_varlen_hex (++p1, &c); |
6954 | event->core = c; | |
cea39f65 | 6955 | } |
26d56a93 | 6956 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6957 | { |
6958 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6959 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6960 | } | |
26d56a93 | 6961 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6962 | { |
6963 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6964 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6965 | } | |
26d56a93 | 6966 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6967 | { |
6968 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 6969 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 6970 | } |
6ab24463 | 6971 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6972 | { |
6973 | ULONGEST ignored; | |
6974 | char pathname[PATH_MAX]; | |
6975 | int pathlen; | |
6976 | ||
6977 | /* Determine the length of the execd pathname. */ | |
6978 | p = unpack_varlen_hex (++p1, &ignored); | |
6979 | pathlen = (p - p1) / 2; | |
6980 | ||
6981 | /* Save the pathname for event reporting and for | |
6982 | the next run command. */ | |
6983 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6984 | pathname[pathlen] = '\0'; | |
6985 | ||
6986 | /* This is freed during event handling. */ | |
6987 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6988 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6989 | ||
6990 | /* Skip the registers included in this packet, since | |
6991 | they may be for an architecture different from the | |
6992 | one used by the original program. */ | |
6993 | skipregs = 1; | |
6994 | } | |
65706a29 PA |
6995 | else if (strprefix (p, p1, "create")) |
6996 | { | |
6997 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 6998 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 6999 | } |
cea39f65 MS |
7000 | else |
7001 | { | |
1f10ba14 | 7002 | ULONGEST pnum; |
256642e8 | 7003 | const char *p_temp; |
1f10ba14 | 7004 | |
94585166 DB |
7005 | if (skipregs) |
7006 | { | |
8424cc97 | 7007 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7008 | p++; |
7009 | continue; | |
7010 | } | |
7011 | ||
1f10ba14 PA |
7012 | /* Maybe a real ``P'' register number. */ |
7013 | p_temp = unpack_varlen_hex (p, &pnum); | |
7014 | /* If the first invalid character is the colon, we got a | |
7015 | register number. Otherwise, it's an unknown stop | |
7016 | reason. */ | |
7017 | if (p_temp == p1) | |
7018 | { | |
5cd63fda PA |
7019 | /* If we haven't parsed the event's thread yet, find |
7020 | it now, in order to find the architecture of the | |
7021 | reported expedited registers. */ | |
7022 | if (event->ptid == null_ptid) | |
7023 | { | |
7024 | const char *thr = strstr (p1 + 1, ";thread:"); | |
7025 | if (thr != NULL) | |
7026 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7027 | NULL); | |
7028 | else | |
7029 | event->ptid = magic_null_ptid; | |
7030 | } | |
7031 | ||
7032 | if (rsa == NULL) | |
7033 | { | |
7034 | inferior *inf = (event->ptid == null_ptid | |
7035 | ? NULL | |
7036 | : find_inferior_ptid (event->ptid)); | |
7037 | /* If this is the first time we learn anything | |
7038 | about this process, skip the registers | |
7039 | included in this packet, since we don't yet | |
7040 | know which architecture to use to parse them. | |
7041 | We'll determine the architecture later when | |
7042 | we process the stop reply and retrieve the | |
7043 | target description, via | |
7044 | remote_notice_new_inferior -> | |
7045 | post_create_inferior. */ | |
7046 | if (inf == NULL) | |
7047 | { | |
7048 | p = strchrnul (p1 + 1, ';'); | |
7049 | p++; | |
7050 | continue; | |
7051 | } | |
7052 | ||
7053 | event->arch = inf->gdbarch; | |
7054 | rsa = get_remote_arch_state (event->arch); | |
7055 | } | |
7056 | ||
7057 | packet_reg *reg | |
7058 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7059 | cached_reg_t cached_reg; |
43ff13b4 | 7060 | |
1f10ba14 PA |
7061 | if (reg == NULL) |
7062 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7063 | Packet: '%s'\n"), |
1f10ba14 | 7064 | hex_string (pnum), p, buf); |
c8e38a49 | 7065 | |
1f10ba14 | 7066 | cached_reg.num = reg->regnum; |
d1dff226 | 7067 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7068 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7069 | |
1f10ba14 PA |
7070 | p = p1 + 1; |
7071 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7072 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7073 | p += 2 * fieldsize; |
5cd63fda | 7074 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7075 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7076 | |
1f10ba14 PA |
7077 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
7078 | } | |
7079 | else | |
7080 | { | |
7081 | /* Not a number. Silently skip unknown optional | |
7082 | info. */ | |
8424cc97 | 7083 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7084 | } |
cea39f65 | 7085 | } |
c8e38a49 | 7086 | |
cea39f65 MS |
7087 | if (*p != ';') |
7088 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7089 | buf, p); | |
7090 | ++p; | |
7091 | } | |
5b5596ff PA |
7092 | |
7093 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7094 | break; | |
7095 | ||
c8e38a49 PA |
7096 | /* fall through */ |
7097 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7098 | { |
7099 | int sig; | |
7100 | ||
7101 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7102 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7103 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7104 | event->ws.value.sig = (enum gdb_signal) sig; | |
7105 | else | |
7106 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7107 | } | |
c8e38a49 | 7108 | break; |
65706a29 PA |
7109 | case 'w': /* Thread exited. */ |
7110 | { | |
256642e8 | 7111 | const char *p; |
65706a29 PA |
7112 | ULONGEST value; |
7113 | ||
7114 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7115 | p = unpack_varlen_hex (&buf[1], &value); | |
7116 | event->ws.value.integer = value; | |
7117 | if (*p != ';') | |
7118 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7119 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7120 | break; |
7121 | } | |
c8e38a49 PA |
7122 | case 'W': /* Target exited. */ |
7123 | case 'X': | |
7124 | { | |
256642e8 | 7125 | const char *p; |
c8e38a49 PA |
7126 | int pid; |
7127 | ULONGEST value; | |
82f73884 | 7128 | |
c8e38a49 PA |
7129 | /* GDB used to accept only 2 hex chars here. Stubs should |
7130 | only send more if they detect GDB supports multi-process | |
7131 | support. */ | |
7132 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7133 | |
c8e38a49 PA |
7134 | if (buf[0] == 'W') |
7135 | { | |
7136 | /* The remote process exited. */ | |
74531fed PA |
7137 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7138 | event->ws.value.integer = value; | |
c8e38a49 PA |
7139 | } |
7140 | else | |
7141 | { | |
7142 | /* The remote process exited with a signal. */ | |
74531fed | 7143 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7144 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7145 | event->ws.value.sig = (enum gdb_signal) value; | |
7146 | else | |
7147 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7148 | } |
82f73884 | 7149 | |
c8e38a49 PA |
7150 | /* If no process is specified, assume inferior_ptid. */ |
7151 | pid = ptid_get_pid (inferior_ptid); | |
7152 | if (*p == '\0') | |
7153 | ; | |
7154 | else if (*p == ';') | |
7155 | { | |
7156 | p++; | |
7157 | ||
0b24eb2d | 7158 | if (*p == '\0') |
82f73884 | 7159 | ; |
61012eef | 7160 | else if (startswith (p, "process:")) |
82f73884 | 7161 | { |
c8e38a49 | 7162 | ULONGEST upid; |
a744cf53 | 7163 | |
c8e38a49 PA |
7164 | p += sizeof ("process:") - 1; |
7165 | unpack_varlen_hex (p, &upid); | |
7166 | pid = upid; | |
82f73884 PA |
7167 | } |
7168 | else | |
7169 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7170 | } |
c8e38a49 PA |
7171 | else |
7172 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7173 | event->ptid = pid_to_ptid (pid); |
7174 | } | |
7175 | break; | |
f2faf941 PA |
7176 | case 'N': |
7177 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7178 | event->ptid = minus_one_ptid; | |
7179 | break; | |
74531fed PA |
7180 | } |
7181 | ||
6efcd9a8 | 7182 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7183 | error (_("No process or thread specified in stop reply: %s"), buf); |
7184 | } | |
7185 | ||
722247f1 YQ |
7186 | /* When the stub wants to tell GDB about a new notification reply, it |
7187 | sends a notification (%Stop, for example). Those can come it at | |
7188 | any time, hence, we have to make sure that any pending | |
7189 | putpkt/getpkt sequence we're making is finished, before querying | |
7190 | the stub for more events with the corresponding ack command | |
7191 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7192 | immediately upon receiving the notification, something like this | |
7193 | could happen: | |
74531fed PA |
7194 | |
7195 | 1.1) --> Hg 1 | |
7196 | 1.2) <-- OK | |
7197 | 1.3) --> g | |
7198 | 1.4) <-- %Stop | |
7199 | 1.5) --> vStopped | |
7200 | 1.6) <-- (registers reply to step #1.3) | |
7201 | ||
7202 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7203 | query. | |
7204 | ||
796cb314 | 7205 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7206 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7207 | doing whatever we were doing: | |
7208 | ||
7209 | 2.1) --> Hg 1 | |
7210 | 2.2) <-- OK | |
7211 | 2.3) --> g | |
7212 | 2.4) <-- %Stop | |
7213 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7214 | 2.5) <-- (registers reply to step #2.3) | |
7215 | ||
7216 | Eventualy after step #2.5, we return to the event loop, which | |
7217 | notices there's an event on the | |
7218 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7219 | associated callback --- the function below. At this point, we're | |
7220 | always safe to start a vStopped sequence. : | |
7221 | ||
7222 | 2.6) --> vStopped | |
7223 | 2.7) <-- T05 thread:2 | |
7224 | 2.8) --> vStopped | |
7225 | 2.9) --> OK | |
7226 | */ | |
7227 | ||
722247f1 YQ |
7228 | void |
7229 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7230 | { |
7231 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7232 | |
f48ff2a7 | 7233 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7234 | { |
722247f1 YQ |
7235 | if (notif_debug) |
7236 | fprintf_unfiltered (gdb_stdlog, | |
7237 | "notif: process: '%s' ack pending event\n", | |
7238 | nc->name); | |
74531fed | 7239 | |
722247f1 | 7240 | /* acknowledge */ |
f48ff2a7 YQ |
7241 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7242 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7243 | |
7244 | while (1) | |
7245 | { | |
7246 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7247 | if (strcmp (rs->buf, "OK") == 0) | |
7248 | break; | |
7249 | else | |
722247f1 | 7250 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7251 | } |
7252 | } | |
722247f1 YQ |
7253 | else |
7254 | { | |
7255 | if (notif_debug) | |
7256 | fprintf_unfiltered (gdb_stdlog, | |
7257 | "notif: process: '%s' no pending reply\n", | |
7258 | nc->name); | |
7259 | } | |
74531fed PA |
7260 | } |
7261 | ||
74531fed PA |
7262 | /* Called when it is decided that STOP_REPLY holds the info of the |
7263 | event that is to be returned to the core. This function always | |
7264 | destroys STOP_REPLY. */ | |
7265 | ||
7266 | static ptid_t | |
7267 | process_stop_reply (struct stop_reply *stop_reply, | |
7268 | struct target_waitstatus *status) | |
7269 | { | |
7270 | ptid_t ptid; | |
7271 | ||
7272 | *status = stop_reply->ws; | |
7273 | ptid = stop_reply->ptid; | |
7274 | ||
7275 | /* If no thread/process was reported by the stub, assume the current | |
7276 | inferior. */ | |
7277 | if (ptid_equal (ptid, null_ptid)) | |
7278 | ptid = inferior_ptid; | |
7279 | ||
5f3563ea | 7280 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7281 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7282 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7283 | { |
799a2abe | 7284 | struct private_thread_info *remote_thr; |
ee154bee | 7285 | |
5f3563ea PA |
7286 | /* Expedited registers. */ |
7287 | if (stop_reply->regcache) | |
7288 | { | |
217f1f79 | 7289 | struct regcache *regcache |
5cd63fda | 7290 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea PA |
7291 | cached_reg_t *reg; |
7292 | int ix; | |
7293 | ||
7294 | for (ix = 0; | |
d1dff226 | 7295 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7296 | ix++) |
d1dff226 | 7297 | { |
217f1f79 | 7298 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7299 | xfree (reg->data); |
7300 | } | |
7301 | ||
5f3563ea PA |
7302 | VEC_free (cached_reg_t, stop_reply->regcache); |
7303 | } | |
74531fed | 7304 | |
1941c569 | 7305 | remote_notice_new_inferior (ptid, 0); |
85ad3aaf | 7306 | remote_thr = get_private_info_ptid (ptid); |
799a2abe PA |
7307 | remote_thr->core = stop_reply->core; |
7308 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7309 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7310 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7311 | } |
7312 | ||
74531fed PA |
7313 | stop_reply_xfree (stop_reply); |
7314 | return ptid; | |
7315 | } | |
7316 | ||
7317 | /* The non-stop mode version of target_wait. */ | |
7318 | ||
7319 | static ptid_t | |
47608cb1 | 7320 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7321 | { |
7322 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7323 | struct stop_reply *stop_reply; |
7324 | int ret; | |
fee9eda9 | 7325 | int is_notif = 0; |
74531fed PA |
7326 | |
7327 | /* If in non-stop mode, get out of getpkt even if a | |
7328 | notification is received. */ | |
7329 | ||
7330 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7331 | 0 /* forever */, &is_notif); |
74531fed PA |
7332 | while (1) |
7333 | { | |
fee9eda9 | 7334 | if (ret != -1 && !is_notif) |
74531fed PA |
7335 | switch (rs->buf[0]) |
7336 | { | |
7337 | case 'E': /* Error of some sort. */ | |
7338 | /* We're out of sync with the target now. Did it continue | |
7339 | or not? We can't tell which thread it was in non-stop, | |
7340 | so just ignore this. */ | |
7341 | warning (_("Remote failure reply: %s"), rs->buf); | |
7342 | break; | |
7343 | case 'O': /* Console output. */ | |
7344 | remote_console_output (rs->buf + 1); | |
7345 | break; | |
7346 | default: | |
7347 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7348 | break; | |
7349 | } | |
7350 | ||
7351 | /* Acknowledge a pending stop reply that may have arrived in the | |
7352 | mean time. */ | |
f48ff2a7 | 7353 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7354 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7355 | |
7356 | /* If indeed we noticed a stop reply, we're done. */ | |
7357 | stop_reply = queued_stop_reply (ptid); | |
7358 | if (stop_reply != NULL) | |
7359 | return process_stop_reply (stop_reply, status); | |
7360 | ||
47608cb1 | 7361 | /* Still no event. If we're just polling for an event, then |
74531fed | 7362 | return to the event loop. */ |
47608cb1 | 7363 | if (options & TARGET_WNOHANG) |
74531fed PA |
7364 | { |
7365 | status->kind = TARGET_WAITKIND_IGNORE; | |
7366 | return minus_one_ptid; | |
7367 | } | |
7368 | ||
47608cb1 | 7369 | /* Otherwise do a blocking wait. */ |
74531fed | 7370 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7371 | 1 /* forever */, &is_notif); |
74531fed PA |
7372 | } |
7373 | } | |
7374 | ||
7375 | /* Wait until the remote machine stops, then return, storing status in | |
7376 | STATUS just as `wait' would. */ | |
7377 | ||
7378 | static ptid_t | |
47608cb1 | 7379 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7380 | { |
7381 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7382 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7383 | char *buf; |
74531fed PA |
7384 | struct stop_reply *stop_reply; |
7385 | ||
47608cb1 PA |
7386 | again: |
7387 | ||
74531fed PA |
7388 | status->kind = TARGET_WAITKIND_IGNORE; |
7389 | status->value.integer = 0; | |
7390 | ||
7391 | stop_reply = queued_stop_reply (ptid); | |
7392 | if (stop_reply != NULL) | |
7393 | return process_stop_reply (stop_reply, status); | |
7394 | ||
7395 | if (rs->cached_wait_status) | |
7396 | /* Use the cached wait status, but only once. */ | |
7397 | rs->cached_wait_status = 0; | |
7398 | else | |
7399 | { | |
7400 | int ret; | |
722247f1 | 7401 | int is_notif; |
567420d1 PA |
7402 | int forever = ((options & TARGET_WNOHANG) == 0 |
7403 | && wait_forever_enabled_p); | |
7404 | ||
7405 | if (!rs->waiting_for_stop_reply) | |
7406 | { | |
7407 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7408 | return minus_one_ptid; | |
7409 | } | |
74531fed | 7410 | |
74531fed PA |
7411 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7412 | _never_ wait for ever -> test on target_is_async_p(). | |
7413 | However, before we do that we need to ensure that the caller | |
7414 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7415 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7416 | forever, &is_notif); |
722247f1 YQ |
7417 | |
7418 | /* GDB gets a notification. Return to core as this event is | |
7419 | not interesting. */ | |
7420 | if (ret != -1 && is_notif) | |
7421 | return minus_one_ptid; | |
567420d1 PA |
7422 | |
7423 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7424 | return minus_one_ptid; | |
74531fed PA |
7425 | } |
7426 | ||
7427 | buf = rs->buf; | |
7428 | ||
3a29589a DJ |
7429 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7430 | an 'F' or 'O' packet. */ | |
7431 | if (buf[0] != 'F' && buf[0] != 'O') | |
7432 | rs->ctrlc_pending_p = 0; | |
7433 | ||
74531fed PA |
7434 | switch (buf[0]) |
7435 | { | |
7436 | case 'E': /* Error of some sort. */ | |
7437 | /* We're out of sync with the target now. Did it continue or | |
7438 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7439 | rs->waiting_for_stop_reply = 0; |
7440 | ||
74531fed PA |
7441 | warning (_("Remote failure reply: %s"), buf); |
7442 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7443 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7444 | break; |
7445 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7446 | /* GDB may access the inferior memory while handling the File-I/O |
7447 | request, but we don't want GDB accessing memory while waiting | |
7448 | for a stop reply. See the comments in putpkt_binary. Set | |
7449 | waiting_for_stop_reply to 0 temporarily. */ | |
7450 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7451 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7452 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7453 | /* GDB handled the File-I/O request, and the target is running |
7454 | again. Keep waiting for events. */ | |
7455 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7456 | break; |
f2faf941 | 7457 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7458 | { |
29090fb6 LM |
7459 | struct stop_reply *stop_reply; |
7460 | ||
7461 | /* There is a stop reply to handle. */ | |
7462 | rs->waiting_for_stop_reply = 0; | |
7463 | ||
7464 | stop_reply | |
722247f1 YQ |
7465 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7466 | rs->buf); | |
74531fed | 7467 | |
74531fed | 7468 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7469 | break; |
7470 | } | |
7471 | case 'O': /* Console output. */ | |
7472 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7473 | break; |
7474 | case '\0': | |
b73be471 | 7475 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7476 | { |
7477 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7478 | remote system doesn't support it. */ | |
223ffa71 | 7479 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7480 | printf_filtered |
7481 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7482 | gdb_signal_to_name (rs->last_sent_signal)); |
7483 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7484 | target_terminal::inferior (); |
c8e38a49 | 7485 | |
f5c4fcd9 TT |
7486 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7487 | putpkt (buf); | |
c8e38a49 | 7488 | break; |
43ff13b4 | 7489 | } |
c8e38a49 PA |
7490 | /* else fallthrough */ |
7491 | default: | |
7492 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7493 | break; |
43ff13b4 | 7494 | } |
c8e38a49 | 7495 | |
f2faf941 PA |
7496 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7497 | return minus_one_ptid; | |
7498 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7499 | { |
7500 | /* Nothing interesting happened. If we're doing a non-blocking | |
7501 | poll, we're done. Otherwise, go back to waiting. */ | |
7502 | if (options & TARGET_WNOHANG) | |
7503 | return minus_one_ptid; | |
7504 | else | |
7505 | goto again; | |
7506 | } | |
74531fed PA |
7507 | else if (status->kind != TARGET_WAITKIND_EXITED |
7508 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7509 | { |
7510 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7511 | record_currthread (rs, event_ptid); |
82f73884 PA |
7512 | else |
7513 | event_ptid = inferior_ptid; | |
43ff13b4 | 7514 | } |
74531fed PA |
7515 | else |
7516 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7517 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7518 | |
82f73884 | 7519 | return event_ptid; |
43ff13b4 JM |
7520 | } |
7521 | ||
74531fed PA |
7522 | /* Wait until the remote machine stops, then return, storing status in |
7523 | STATUS just as `wait' would. */ | |
7524 | ||
c8e38a49 | 7525 | static ptid_t |
117de6a9 | 7526 | remote_wait (struct target_ops *ops, |
47608cb1 | 7527 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7528 | { |
7529 | ptid_t event_ptid; | |
7530 | ||
6efcd9a8 | 7531 | if (target_is_non_stop_p ()) |
47608cb1 | 7532 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7533 | else |
47608cb1 | 7534 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7535 | |
d9d41e78 | 7536 | if (target_is_async_p ()) |
c8e38a49 | 7537 | { |
74531fed PA |
7538 | /* If there are are events left in the queue tell the event loop |
7539 | to return here. */ | |
722247f1 | 7540 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7541 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7542 | } |
c8e38a49 PA |
7543 | |
7544 | return event_ptid; | |
7545 | } | |
7546 | ||
74ca34ce | 7547 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7548 | |
b96ec7ac | 7549 | static int |
56be3814 | 7550 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7551 | { |
9890e433 | 7552 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
b96ec7ac | 7553 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7554 | char *buf, *p; |
9890e433 | 7555 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7556 | int i; |
7557 | ||
4082afcc | 7558 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7559 | return 0; |
7560 | ||
7561 | if (reg->pnum == -1) | |
7562 | return 0; | |
7563 | ||
2e9f7625 | 7564 | p = rs->buf; |
fcad0fa4 | 7565 | *p++ = 'p'; |
74ca34ce | 7566 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7567 | *p++ = '\0'; |
1f4437a4 MS |
7568 | putpkt (rs->buf); |
7569 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7570 | |
2e9f7625 DJ |
7571 | buf = rs->buf; |
7572 | ||
74ca34ce DJ |
7573 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7574 | { | |
7575 | case PACKET_OK: | |
7576 | break; | |
7577 | case PACKET_UNKNOWN: | |
7578 | return 0; | |
7579 | case PACKET_ERROR: | |
27a9c0bf MS |
7580 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
7581 | gdbarch_register_name (get_regcache_arch (regcache), | |
7582 | reg->regnum), | |
7583 | buf); | |
74ca34ce | 7584 | } |
3f9a994c JB |
7585 | |
7586 | /* If this register is unfetchable, tell the regcache. */ | |
7587 | if (buf[0] == 'x') | |
8480adf2 | 7588 | { |
56be3814 | 7589 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7590 | return 1; |
b96ec7ac | 7591 | } |
b96ec7ac | 7592 | |
3f9a994c JB |
7593 | /* Otherwise, parse and supply the value. */ |
7594 | p = buf; | |
7595 | i = 0; | |
7596 | while (p[0] != 0) | |
7597 | { | |
7598 | if (p[1] == 0) | |
74ca34ce | 7599 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7600 | |
7601 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7602 | p += 2; | |
7603 | } | |
56be3814 | 7604 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7605 | return 1; |
b96ec7ac AC |
7606 | } |
7607 | ||
74ca34ce DJ |
7608 | /* Fetch the registers included in the target's 'g' packet. */ |
7609 | ||
29709017 DJ |
7610 | static int |
7611 | send_g_packet (void) | |
c906108c | 7612 | { |
d01949b6 | 7613 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7614 | int buf_len; |
c906108c | 7615 | |
bba74b36 | 7616 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7617 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7618 | |
29709017 DJ |
7619 | /* We can get out of synch in various cases. If the first character |
7620 | in the buffer is not a hex character, assume that has happened | |
7621 | and try to fetch another packet to read. */ | |
7622 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7623 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7624 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7625 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7626 | { | |
7627 | if (remote_debug) | |
7628 | fprintf_unfiltered (gdb_stdlog, | |
7629 | "Bad register packet; fetching a new packet\n"); | |
7630 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7631 | } | |
7632 | ||
74ca34ce DJ |
7633 | buf_len = strlen (rs->buf); |
7634 | ||
7635 | /* Sanity check the received packet. */ | |
7636 | if (buf_len % 2 != 0) | |
7637 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7638 | |
7639 | return buf_len / 2; | |
7640 | } | |
7641 | ||
7642 | static void | |
56be3814 | 7643 | process_g_packet (struct regcache *regcache) |
29709017 | 7644 | { |
4a22f64d | 7645 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 | 7646 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 7647 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); |
29709017 DJ |
7648 | int i, buf_len; |
7649 | char *p; | |
7650 | char *regs; | |
7651 | ||
7652 | buf_len = strlen (rs->buf); | |
7653 | ||
7654 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 7655 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 SM |
7656 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
7657 | "bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf); | |
74ca34ce DJ |
7658 | |
7659 | /* Save the size of the packet sent to us by the target. It is used | |
7660 | as a heuristic when determining the max size of packets that the | |
7661 | target can safely receive. */ | |
7662 | if (rsa->actual_register_packet_size == 0) | |
7663 | rsa->actual_register_packet_size = buf_len; | |
7664 | ||
7665 | /* If this is smaller than we guessed the 'g' packet would be, | |
7666 | update our records. A 'g' reply that doesn't include a register's | |
7667 | value implies either that the register is not available, or that | |
7668 | the 'p' packet must be used. */ | |
7669 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7670 | { |
9dc193c3 | 7671 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7672 | |
4a22f64d | 7673 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7674 | { |
9dc193c3 LF |
7675 | long offset = rsa->regs[i].offset; |
7676 | long reg_size = register_size (gdbarch, i); | |
7677 | ||
74ca34ce DJ |
7678 | if (rsa->regs[i].pnum == -1) |
7679 | continue; | |
7680 | ||
9dc193c3 | 7681 | if (offset >= sizeof_g_packet) |
74ca34ce | 7682 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7683 | else if (offset + reg_size > sizeof_g_packet) |
7684 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7685 | else |
74ca34ce | 7686 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7687 | } |
9dc193c3 LF |
7688 | |
7689 | /* Looks valid enough, we can assume this is the correct length | |
7690 | for a 'g' packet. It's important not to adjust | |
7691 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7692 | this "if" won't be run the next time the method is called | |
7693 | with a packet of the same size and one of the internal errors | |
7694 | below will trigger instead. */ | |
7695 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7696 | } |
b323314b | 7697 | |
224c3ddb | 7698 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7699 | |
7700 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7701 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7702 | |
c906108c SS |
7703 | /* Reply describes registers byte by byte, each byte encoded as two |
7704 | hex characters. Suck them all up, then supply them to the | |
7705 | register cacheing/storage mechanism. */ | |
7706 | ||
74ca34ce | 7707 | p = rs->buf; |
ea9c271d | 7708 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7709 | { |
74ca34ce DJ |
7710 | if (p[0] == 0 || p[1] == 0) |
7711 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7712 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7713 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7714 | |
c906108c | 7715 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7716 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7717 | else |
7718 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7719 | p += 2; | |
7720 | } | |
7721 | ||
a744cf53 MS |
7722 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7723 | { | |
7724 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7725 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7726 | |
7727 | if (r->in_g_packet) | |
7728 | { | |
9dc193c3 | 7729 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7730 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7731 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7732 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7733 | else if (rs->buf[r->offset * 2] == 'x') |
7734 | { | |
7735 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7736 | /* The register isn't available, mark it as such (at | |
7737 | the same time setting the value to zero). */ | |
7738 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7739 | } | |
7740 | else | |
7741 | regcache_raw_supply (regcache, r->regnum, | |
7742 | regs + r->offset); | |
7743 | } | |
7744 | } | |
c906108c SS |
7745 | } |
7746 | ||
29709017 | 7747 | static void |
56be3814 | 7748 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7749 | { |
7750 | send_g_packet (); | |
56be3814 | 7751 | process_g_packet (regcache); |
29709017 DJ |
7752 | } |
7753 | ||
e6e4e701 PA |
7754 | /* Make the remote selected traceframe match GDB's selected |
7755 | traceframe. */ | |
7756 | ||
7757 | static void | |
7758 | set_remote_traceframe (void) | |
7759 | { | |
7760 | int newnum; | |
262e1174 | 7761 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7762 | |
262e1174 | 7763 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7764 | return; |
7765 | ||
7766 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7767 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7768 | |
7769 | newnum = target_trace_find (tfind_number, | |
7770 | get_traceframe_number (), 0, 0, NULL); | |
7771 | ||
7772 | /* Should not happen. If it does, all bets are off. */ | |
7773 | if (newnum != get_traceframe_number ()) | |
7774 | warning (_("could not set remote traceframe")); | |
7775 | } | |
7776 | ||
74ca34ce | 7777 | static void |
28439f5e PA |
7778 | remote_fetch_registers (struct target_ops *ops, |
7779 | struct regcache *regcache, int regnum) | |
74ca34ce | 7780 | { |
5cd63fda PA |
7781 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
7782 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
7783 | int i; |
7784 | ||
e6e4e701 | 7785 | set_remote_traceframe (); |
bcc0c096 | 7786 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7787 | |
7788 | if (regnum >= 0) | |
7789 | { | |
5cd63fda | 7790 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 7791 | |
74ca34ce DJ |
7792 | gdb_assert (reg != NULL); |
7793 | ||
7794 | /* If this register might be in the 'g' packet, try that first - | |
7795 | we are likely to read more than one register. If this is the | |
7796 | first 'g' packet, we might be overly optimistic about its | |
7797 | contents, so fall back to 'p'. */ | |
7798 | if (reg->in_g_packet) | |
7799 | { | |
56be3814 | 7800 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7801 | if (reg->in_g_packet) |
7802 | return; | |
7803 | } | |
7804 | ||
56be3814 | 7805 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7806 | return; |
7807 | ||
7808 | /* This register is not available. */ | |
56be3814 | 7809 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7810 | |
7811 | return; | |
7812 | } | |
7813 | ||
56be3814 | 7814 | fetch_registers_using_g (regcache); |
74ca34ce | 7815 | |
5cd63fda | 7816 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 7817 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7818 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7819 | { |
7820 | /* This register is not available. */ | |
56be3814 | 7821 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7822 | } |
7823 | } | |
7824 | ||
c906108c SS |
7825 | /* Prepare to store registers. Since we may send them all (using a |
7826 | 'G' request), we have to read out the ones we don't want to change | |
7827 | first. */ | |
7828 | ||
c5aa993b | 7829 | static void |
f32dbf8c | 7830 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7831 | { |
5cd63fda | 7832 | remote_arch_state *rsa = get_remote_arch_state (regcache->arch ()); |
cf0e1e0d | 7833 | int i; |
cf0e1e0d | 7834 | |
c906108c | 7835 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7836 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7837 | { |
7838 | case PACKET_DISABLE: | |
7839 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7840 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7841 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7842 | if (rsa->regs[i].in_g_packet) |
8e368124 | 7843 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
7844 | break; |
7845 | case PACKET_ENABLE: | |
7846 | break; | |
7847 | } | |
7848 | } | |
7849 | ||
ad10f812 | 7850 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7851 | packet was not recognized. */ |
5a2468f5 JM |
7852 | |
7853 | static int | |
1f4437a4 MS |
7854 | store_register_using_P (const struct regcache *regcache, |
7855 | struct packet_reg *reg) | |
5a2468f5 | 7856 | { |
4a22f64d | 7857 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7858 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7859 | /* Try storing a single register. */ |
6d820c5c | 7860 | char *buf = rs->buf; |
9890e433 | 7861 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 7862 | char *p; |
5a2468f5 | 7863 | |
4082afcc | 7864 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7865 | return 0; |
7866 | ||
7867 | if (reg->pnum == -1) | |
7868 | return 0; | |
7869 | ||
ea9c271d | 7870 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7871 | p = buf + strlen (buf); |
56be3814 | 7872 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7873 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7874 | putpkt (rs->buf); |
7875 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7876 | |
74ca34ce DJ |
7877 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7878 | { | |
7879 | case PACKET_OK: | |
7880 | return 1; | |
7881 | case PACKET_ERROR: | |
27a9c0bf MS |
7882 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7883 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7884 | case PACKET_UNKNOWN: |
7885 | return 0; | |
7886 | default: | |
7887 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7888 | } | |
c906108c SS |
7889 | } |
7890 | ||
23860348 MS |
7891 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7892 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7893 | |
7894 | static void | |
56be3814 | 7895 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7896 | { |
d01949b6 | 7897 | struct remote_state *rs = get_remote_state (); |
5cd63fda | 7898 | remote_arch_state *rsa = get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 7899 | gdb_byte *regs; |
c906108c SS |
7900 | char *p; |
7901 | ||
193cb69f AC |
7902 | /* Extract all the registers in the regcache copying them into a |
7903 | local buffer. */ | |
7904 | { | |
b323314b | 7905 | int i; |
a744cf53 | 7906 | |
224c3ddb | 7907 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7908 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7909 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7910 | { |
ea9c271d | 7911 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7912 | |
b323314b | 7913 | if (r->in_g_packet) |
56be3814 | 7914 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7915 | } |
7916 | } | |
c906108c SS |
7917 | |
7918 | /* Command describes registers byte by byte, | |
7919 | each byte encoded as two hex characters. */ | |
6d820c5c | 7920 | p = rs->buf; |
193cb69f | 7921 | *p++ = 'G'; |
74ca34ce | 7922 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
7923 | putpkt (rs->buf); |
7924 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7925 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7926 | error (_("Could not write registers; remote failure reply '%s'"), |
7927 | rs->buf); | |
c906108c | 7928 | } |
74ca34ce DJ |
7929 | |
7930 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7931 | of the register cache buffer. FIXME: ignores errors. */ | |
7932 | ||
7933 | static void | |
28439f5e PA |
7934 | remote_store_registers (struct target_ops *ops, |
7935 | struct regcache *regcache, int regnum) | |
74ca34ce | 7936 | { |
5cd63fda PA |
7937 | struct gdbarch *gdbarch = regcache->arch (); |
7938 | remote_arch_state *rsa = get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
7939 | int i; |
7940 | ||
e6e4e701 | 7941 | set_remote_traceframe (); |
bcc0c096 | 7942 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7943 | |
7944 | if (regnum >= 0) | |
7945 | { | |
5cd63fda | 7946 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 7947 | |
74ca34ce DJ |
7948 | gdb_assert (reg != NULL); |
7949 | ||
7950 | /* Always prefer to store registers using the 'P' packet if | |
7951 | possible; we often change only a small number of registers. | |
7952 | Sometimes we change a larger number; we'd need help from a | |
7953 | higher layer to know to use 'G'. */ | |
56be3814 | 7954 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7955 | return; |
7956 | ||
7957 | /* For now, don't complain if we have no way to write the | |
7958 | register. GDB loses track of unavailable registers too | |
7959 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7960 | any way to read the register, either... */ |
74ca34ce DJ |
7961 | if (!reg->in_g_packet) |
7962 | return; | |
7963 | ||
56be3814 | 7964 | store_registers_using_G (regcache); |
74ca34ce DJ |
7965 | return; |
7966 | } | |
7967 | ||
56be3814 | 7968 | store_registers_using_G (regcache); |
74ca34ce | 7969 | |
5cd63fda | 7970 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 7971 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7972 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7973 | /* See above for why we do not issue an error here. */ |
7974 | continue; | |
7975 | } | |
c906108c SS |
7976 | \f |
7977 | ||
7978 | /* Return the number of hex digits in num. */ | |
7979 | ||
7980 | static int | |
fba45db2 | 7981 | hexnumlen (ULONGEST num) |
c906108c SS |
7982 | { |
7983 | int i; | |
7984 | ||
7985 | for (i = 0; num != 0; i++) | |
7986 | num >>= 4; | |
7987 | ||
325fac50 | 7988 | return std::max (i, 1); |
c906108c SS |
7989 | } |
7990 | ||
2df3850c | 7991 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7992 | |
7993 | static int | |
fba45db2 | 7994 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7995 | { |
c906108c | 7996 | int len = hexnumlen (num); |
a744cf53 | 7997 | |
2df3850c JM |
7998 | return hexnumnstr (buf, num, len); |
7999 | } | |
8000 | ||
c906108c | 8001 | |
2df3850c | 8002 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8003 | |
2df3850c | 8004 | static int |
fba45db2 | 8005 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8006 | { |
8007 | int i; | |
8008 | ||
8009 | buf[width] = '\0'; | |
8010 | ||
8011 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8012 | { |
c5aa993b | 8013 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8014 | num >>= 4; |
8015 | } | |
8016 | ||
2df3850c | 8017 | return width; |
c906108c SS |
8018 | } |
8019 | ||
23860348 | 8020 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8021 | |
8022 | static CORE_ADDR | |
fba45db2 | 8023 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8024 | { |
883b9c6c | 8025 | unsigned int address_size = remote_address_size; |
a744cf53 | 8026 | |
911c95a5 UW |
8027 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8028 | if (!address_size) | |
f5656ead | 8029 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8030 | |
8031 | if (address_size > 0 | |
8032 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8033 | { |
8034 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8035 | in a ULONGEST variable. */ |
c906108c | 8036 | ULONGEST mask = 1; |
a744cf53 | 8037 | |
911c95a5 | 8038 | mask = (mask << address_size) - 1; |
c906108c SS |
8039 | addr &= mask; |
8040 | } | |
8041 | return addr; | |
8042 | } | |
8043 | ||
8044 | /* Determine whether the remote target supports binary downloading. | |
8045 | This is accomplished by sending a no-op memory write of zero length | |
8046 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8047 | the whole packet, since many stubs strip the eighth bit and |
8048 | subsequently compute a wrong checksum, which causes real havoc with | |
8049 | remote_write_bytes. | |
7a292a7a | 8050 | |
96baa820 | 8051 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8052 | clean. In cases like this, the user should clear "remote |
23860348 | 8053 | X-packet". */ |
96baa820 | 8054 | |
c906108c | 8055 | static void |
fba45db2 | 8056 | check_binary_download (CORE_ADDR addr) |
c906108c | 8057 | { |
d01949b6 | 8058 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8059 | |
4082afcc | 8060 | switch (packet_support (PACKET_X)) |
c906108c | 8061 | { |
96baa820 JM |
8062 | case PACKET_DISABLE: |
8063 | break; | |
8064 | case PACKET_ENABLE: | |
8065 | break; | |
8066 | case PACKET_SUPPORT_UNKNOWN: | |
8067 | { | |
96baa820 | 8068 | char *p; |
802188a7 | 8069 | |
2e9f7625 | 8070 | p = rs->buf; |
96baa820 JM |
8071 | *p++ = 'X'; |
8072 | p += hexnumstr (p, (ULONGEST) addr); | |
8073 | *p++ = ','; | |
8074 | p += hexnumstr (p, (ULONGEST) 0); | |
8075 | *p++ = ':'; | |
8076 | *p = '\0'; | |
802188a7 | 8077 | |
2e9f7625 | 8078 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8079 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8080 | |
2e9f7625 | 8081 | if (rs->buf[0] == '\0') |
96baa820 JM |
8082 | { |
8083 | if (remote_debug) | |
8084 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8085 | "binary downloading NOT " |
8086 | "supported by target\n"); | |
444abaca | 8087 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8088 | } |
8089 | else | |
8090 | { | |
8091 | if (remote_debug) | |
8092 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8093 | "binary downloading supported by target\n"); |
444abaca | 8094 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8095 | } |
8096 | break; | |
8097 | } | |
c906108c SS |
8098 | } |
8099 | } | |
8100 | ||
124e13d9 SM |
8101 | /* Helper function to resize the payload in order to try to get a good |
8102 | alignment. We try to write an amount of data such that the next write will | |
8103 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8104 | ||
8105 | static int | |
8106 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8107 | { | |
8108 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8109 | } | |
8110 | ||
c906108c SS |
8111 | /* Write memory data directly to the remote machine. |
8112 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8113 | HEADER is the starting part of the packet. |
c906108c SS |
8114 | MEMADDR is the address in the remote memory space. |
8115 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8116 | LEN_UNITS is the number of addressable units to write. |
8117 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8118 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8119 | should send data as binary ('X'), or hex-encoded ('M'). | |
8120 | ||
8121 | The function creates packet of the form | |
8122 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8123 | ||
124e13d9 | 8124 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8125 | |
8126 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8127 | are omitted. | |
8128 | ||
9b409511 | 8129 | Return the transferred status, error or OK (an |
124e13d9 SM |
8130 | 'enum target_xfer_status' value). Save the number of addressable units |
8131 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8132 | ||
8133 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8134 | exchange between gdb and the stub could look like (?? in place of the | |
8135 | checksum): | |
8136 | ||
8137 | -> $m1000,4#?? | |
8138 | <- aaaabbbbccccdddd | |
8139 | ||
8140 | -> $M1000,3:eeeeffffeeee#?? | |
8141 | <- OK | |
8142 | ||
8143 | -> $m1000,4#?? | |
8144 | <- eeeeffffeeeedddd */ | |
c906108c | 8145 | |
9b409511 | 8146 | static enum target_xfer_status |
a76d924d | 8147 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8148 | const gdb_byte *myaddr, ULONGEST len_units, |
8149 | int unit_size, ULONGEST *xfered_len_units, | |
8150 | char packet_format, int use_length) | |
c906108c | 8151 | { |
6d820c5c | 8152 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8153 | char *p; |
a76d924d DJ |
8154 | char *plen = NULL; |
8155 | int plenlen = 0; | |
124e13d9 SM |
8156 | int todo_units; |
8157 | int units_written; | |
8158 | int payload_capacity_bytes; | |
8159 | int payload_length_bytes; | |
a76d924d DJ |
8160 | |
8161 | if (packet_format != 'X' && packet_format != 'M') | |
8162 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8163 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8164 | |
124e13d9 | 8165 | if (len_units == 0) |
9b409511 | 8166 | return TARGET_XFER_EOF; |
b2182ed2 | 8167 | |
124e13d9 | 8168 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8169 | |
6d820c5c DJ |
8170 | /* The packet buffer will be large enough for the payload; |
8171 | get_memory_packet_size ensures this. */ | |
a76d924d | 8172 | rs->buf[0] = '\0'; |
c906108c | 8173 | |
a257b5bb | 8174 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8175 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8176 | ||
124e13d9 | 8177 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8178 | if (!use_length) |
0df8b418 | 8179 | /* The comma won't be used. */ |
124e13d9 SM |
8180 | payload_capacity_bytes += 1; |
8181 | payload_capacity_bytes -= strlen (header); | |
8182 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8183 | |
a76d924d | 8184 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8185 | |
a76d924d DJ |
8186 | strcat (rs->buf, header); |
8187 | p = rs->buf + strlen (header); | |
8188 | ||
8189 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8190 | if (packet_format == 'X') | |
c906108c | 8191 | { |
23860348 | 8192 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8193 | todo_units = std::min (len_units, |
8194 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8195 | if (use_length) |
124e13d9 | 8196 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8197 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8198 | } |
8199 | else | |
8200 | { | |
124e13d9 | 8201 | /* Number of bytes that will fit. */ |
325fac50 PA |
8202 | todo_units |
8203 | = std::min (len_units, | |
8204 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8205 | if (use_length) |
124e13d9 | 8206 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8207 | todo_units = std::min (todo_units, |
8208 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8209 | } |
a76d924d | 8210 | |
124e13d9 | 8211 | if (todo_units <= 0) |
3de11b2e | 8212 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8213 | _("minimum packet size too small to write data")); |
802188a7 | 8214 | |
6765f3e5 DJ |
8215 | /* If we already need another packet, then try to align the end |
8216 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8217 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8218 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8219 | |
a257b5bb | 8220 | /* Append "<memaddr>". */ |
917317f4 JM |
8221 | memaddr = remote_address_masked (memaddr); |
8222 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8223 | |
a76d924d DJ |
8224 | if (use_length) |
8225 | { | |
8226 | /* Append ",". */ | |
8227 | *p++ = ','; | |
802188a7 | 8228 | |
124e13d9 SM |
8229 | /* Append the length and retain its location and size. It may need to be |
8230 | adjusted once the packet body has been created. */ | |
a76d924d | 8231 | plen = p; |
124e13d9 | 8232 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8233 | p += plenlen; |
8234 | } | |
a257b5bb AC |
8235 | |
8236 | /* Append ":". */ | |
917317f4 JM |
8237 | *p++ = ':'; |
8238 | *p = '\0'; | |
802188a7 | 8239 | |
a257b5bb | 8240 | /* Append the packet body. */ |
a76d924d | 8241 | if (packet_format == 'X') |
917317f4 | 8242 | { |
917317f4 JM |
8243 | /* Binary mode. Send target system values byte by byte, in |
8244 | increasing byte addresses. Only escape certain critical | |
8245 | characters. */ | |
124e13d9 SM |
8246 | payload_length_bytes = |
8247 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8248 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8249 | |
124e13d9 | 8250 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8251 | a second try to keep the end of the packet aligned. Don't do |
8252 | this if the packet is tiny. */ | |
124e13d9 | 8253 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8254 | { |
124e13d9 SM |
8255 | int new_todo_units; |
8256 | ||
8257 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8258 | ||
8259 | if (new_todo_units != units_written) | |
8260 | payload_length_bytes = | |
8261 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8262 | (gdb_byte *) p, &units_written, | |
8263 | payload_capacity_bytes); | |
6765f3e5 DJ |
8264 | } |
8265 | ||
124e13d9 SM |
8266 | p += payload_length_bytes; |
8267 | if (use_length && units_written < todo_units) | |
c906108c | 8268 | { |
802188a7 | 8269 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8270 | and we have actually sent fewer units than planned. |
917317f4 JM |
8271 | Fix-up the length field of the packet. Use the same |
8272 | number of characters as before. */ | |
124e13d9 SM |
8273 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8274 | plenlen); | |
917317f4 | 8275 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8276 | } |
a76d924d DJ |
8277 | } |
8278 | else | |
8279 | { | |
917317f4 JM |
8280 | /* Normal mode: Send target system values byte by byte, in |
8281 | increasing byte addresses. Each byte is encoded as a two hex | |
8282 | value. */ | |
124e13d9 SM |
8283 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8284 | units_written = todo_units; | |
c906108c | 8285 | } |
802188a7 | 8286 | |
2e9f7625 | 8287 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8288 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8289 | |
2e9f7625 | 8290 | if (rs->buf[0] == 'E') |
00d84524 | 8291 | return TARGET_XFER_E_IO; |
802188a7 | 8292 | |
124e13d9 SM |
8293 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8294 | send fewer units than we'd planned. */ | |
8295 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 8296 | return TARGET_XFER_OK; |
c906108c SS |
8297 | } |
8298 | ||
a76d924d DJ |
8299 | /* Write memory data directly to the remote machine. |
8300 | This does not inform the data cache; the data cache uses this. | |
8301 | MEMADDR is the address in the remote memory space. | |
8302 | MYADDR is the address of the buffer in our space. | |
8303 | LEN is the number of bytes. | |
8304 | ||
9b409511 YQ |
8305 | Return the transferred status, error or OK (an |
8306 | 'enum target_xfer_status' value). Save the number of bytes | |
8307 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8308 | |
9b409511 YQ |
8309 | static enum target_xfer_status |
8310 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8311 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8312 | { |
a121b7c1 | 8313 | const char *packet_format = NULL; |
a76d924d DJ |
8314 | |
8315 | /* Check whether the target supports binary download. */ | |
8316 | check_binary_download (memaddr); | |
8317 | ||
4082afcc | 8318 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8319 | { |
8320 | case PACKET_ENABLE: | |
8321 | packet_format = "X"; | |
8322 | break; | |
8323 | case PACKET_DISABLE: | |
8324 | packet_format = "M"; | |
8325 | break; | |
8326 | case PACKET_SUPPORT_UNKNOWN: | |
8327 | internal_error (__FILE__, __LINE__, | |
8328 | _("remote_write_bytes: bad internal state")); | |
8329 | default: | |
8330 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8331 | } | |
8332 | ||
8333 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8334 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8335 | packet_format[0], 1); |
a76d924d DJ |
8336 | } |
8337 | ||
9217e74e YQ |
8338 | /* Read memory data directly from the remote machine. |
8339 | This does not use the data cache; the data cache uses this. | |
8340 | MEMADDR is the address in the remote memory space. | |
8341 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8342 | LEN_UNITS is the number of addressable memory units to read.. |
8343 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8344 | |
8345 | Return the transferred status, error or OK (an | |
8346 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8347 | transferred in *XFERED_LEN_UNITS. |
8348 | ||
8349 | See the comment of remote_write_bytes_aux for an example of | |
8350 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8351 | |
8352 | static enum target_xfer_status | |
124e13d9 SM |
8353 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8354 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8355 | { |
8356 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8357 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8358 | char *p; |
124e13d9 SM |
8359 | int todo_units; |
8360 | int decoded_bytes; | |
9217e74e | 8361 | |
124e13d9 | 8362 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8363 | /* The packet buffer will be large enough for the payload; |
8364 | get_memory_packet_size ensures this. */ | |
8365 | ||
124e13d9 | 8366 | /* Number of units that will fit. */ |
325fac50 PA |
8367 | todo_units = std::min (len_units, |
8368 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8369 | |
8370 | /* Construct "m"<memaddr>","<len>". */ | |
8371 | memaddr = remote_address_masked (memaddr); | |
8372 | p = rs->buf; | |
8373 | *p++ = 'm'; | |
8374 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8375 | *p++ = ','; | |
124e13d9 | 8376 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8377 | *p = '\0'; |
8378 | putpkt (rs->buf); | |
8379 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8380 | if (rs->buf[0] == 'E' | |
8381 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8382 | && rs->buf[3] == '\0') | |
8383 | return TARGET_XFER_E_IO; | |
8384 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8385 | characters. */ | |
8386 | p = rs->buf; | |
124e13d9 | 8387 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8388 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8389 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
8390 | return TARGET_XFER_OK; |
8391 | } | |
8392 | ||
b55fbac4 YQ |
8393 | /* Using the set of read-only target sections of remote, read live |
8394 | read-only memory. | |
8acf9577 YQ |
8395 | |
8396 | For interface/parameters/return description see target.h, | |
8397 | to_xfer_partial. */ | |
8398 | ||
8399 | static enum target_xfer_status | |
b55fbac4 YQ |
8400 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8401 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8402 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8403 | { |
8404 | struct target_section *secp; | |
8405 | struct target_section_table *table; | |
8406 | ||
8407 | secp = target_section_by_addr (ops, memaddr); | |
8408 | if (secp != NULL | |
8409 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8410 | secp->the_bfd_section) | |
8411 | & SEC_READONLY)) | |
8412 | { | |
8413 | struct target_section *p; | |
8414 | ULONGEST memend = memaddr + len; | |
8415 | ||
8416 | table = target_get_section_table (ops); | |
8417 | ||
8418 | for (p = table->sections; p < table->sections_end; p++) | |
8419 | { | |
8420 | if (memaddr >= p->addr) | |
8421 | { | |
8422 | if (memend <= p->endaddr) | |
8423 | { | |
8424 | /* Entire transfer is within this section. */ | |
124e13d9 | 8425 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8426 | xfered_len); |
8acf9577 YQ |
8427 | } |
8428 | else if (memaddr >= p->endaddr) | |
8429 | { | |
8430 | /* This section ends before the transfer starts. */ | |
8431 | continue; | |
8432 | } | |
8433 | else | |
8434 | { | |
8435 | /* This section overlaps the transfer. Just do half. */ | |
8436 | len = p->endaddr - memaddr; | |
124e13d9 | 8437 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8438 | xfered_len); |
8acf9577 YQ |
8439 | } |
8440 | } | |
8441 | } | |
8442 | } | |
8443 | ||
8444 | return TARGET_XFER_EOF; | |
8445 | } | |
8446 | ||
9217e74e YQ |
8447 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8448 | first if the requested memory is unavailable in traceframe. | |
8449 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8450 | |
9b409511 | 8451 | static enum target_xfer_status |
8acf9577 | 8452 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8453 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8454 | ULONGEST *xfered_len) | |
c906108c | 8455 | { |
6b6aa828 | 8456 | if (len == 0) |
96c4f946 | 8457 | return TARGET_XFER_EOF; |
b2182ed2 | 8458 | |
8acf9577 YQ |
8459 | if (get_traceframe_number () != -1) |
8460 | { | |
a79b1bc6 | 8461 | std::vector<mem_range> available; |
8acf9577 YQ |
8462 | |
8463 | /* If we fail to get the set of available memory, then the | |
8464 | target does not support querying traceframe info, and so we | |
8465 | attempt reading from the traceframe anyway (assuming the | |
8466 | target implements the old QTro packet then). */ | |
8467 | if (traceframe_available_memory (&available, memaddr, len)) | |
8468 | { | |
a79b1bc6 | 8469 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8470 | { |
8471 | enum target_xfer_status res; | |
8472 | ||
8473 | /* Don't read into the traceframe's available | |
8474 | memory. */ | |
a79b1bc6 | 8475 | if (!available.empty ()) |
8acf9577 YQ |
8476 | { |
8477 | LONGEST oldlen = len; | |
8478 | ||
a79b1bc6 | 8479 | len = available[0].start - memaddr; |
8acf9577 YQ |
8480 | gdb_assert (len <= oldlen); |
8481 | } | |
8482 | ||
8acf9577 | 8483 | /* This goes through the topmost target again. */ |
b55fbac4 | 8484 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8485 | len, unit_size, xfered_len); |
8acf9577 YQ |
8486 | if (res == TARGET_XFER_OK) |
8487 | return TARGET_XFER_OK; | |
8488 | else | |
8489 | { | |
8490 | /* No use trying further, we know some memory starting | |
8491 | at MEMADDR isn't available. */ | |
8492 | *xfered_len = len; | |
8493 | return TARGET_XFER_UNAVAILABLE; | |
8494 | } | |
8495 | } | |
8496 | ||
8497 | /* Don't try to read more than how much is available, in | |
8498 | case the target implements the deprecated QTro packet to | |
8499 | cater for older GDBs (the target's knowledge of read-only | |
8500 | sections may be outdated by now). */ | |
a79b1bc6 | 8501 | len = available[0].length; |
8acf9577 YQ |
8502 | } |
8503 | } | |
8504 | ||
124e13d9 | 8505 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8506 | } |
74531fed | 8507 | |
c906108c | 8508 | \f |
c906108c | 8509 | |
a76d924d DJ |
8510 | /* Sends a packet with content determined by the printf format string |
8511 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8512 | whether the packet was a success, a failure, or unknown. */ | |
8513 | ||
77b64a49 PA |
8514 | static enum packet_result remote_send_printf (const char *format, ...) |
8515 | ATTRIBUTE_PRINTF (1, 2); | |
8516 | ||
2c0b251b | 8517 | static enum packet_result |
a76d924d DJ |
8518 | remote_send_printf (const char *format, ...) |
8519 | { | |
8520 | struct remote_state *rs = get_remote_state (); | |
8521 | int max_size = get_remote_packet_size (); | |
a76d924d | 8522 | va_list ap; |
a744cf53 | 8523 | |
a76d924d DJ |
8524 | va_start (ap, format); |
8525 | ||
8526 | rs->buf[0] = '\0'; | |
8527 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8528 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8529 | |
8530 | if (putpkt (rs->buf) < 0) | |
8531 | error (_("Communication problem with target.")); | |
8532 | ||
8533 | rs->buf[0] = '\0'; | |
8534 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8535 | ||
8536 | return packet_check_result (rs->buf); | |
8537 | } | |
8538 | ||
a76d924d DJ |
8539 | /* Flash writing can take quite some time. We'll set |
8540 | effectively infinite timeout for flash operations. | |
8541 | In future, we'll need to decide on a better approach. */ | |
8542 | static const int remote_flash_timeout = 1000; | |
8543 | ||
8544 | static void | |
8545 | remote_flash_erase (struct target_ops *ops, | |
8546 | ULONGEST address, LONGEST length) | |
8547 | { | |
f5656ead | 8548 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8549 | enum packet_result ret; |
2ec845e7 TT |
8550 | scoped_restore restore_timeout |
8551 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8552 | |
8553 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8554 | phex (address, addr_size), |
a76d924d DJ |
8555 | phex (length, 4)); |
8556 | switch (ret) | |
8557 | { | |
8558 | case PACKET_UNKNOWN: | |
8559 | error (_("Remote target does not support flash erase")); | |
8560 | case PACKET_ERROR: | |
8561 | error (_("Error erasing flash with vFlashErase packet")); | |
8562 | default: | |
8563 | break; | |
8564 | } | |
a76d924d DJ |
8565 | } |
8566 | ||
9b409511 YQ |
8567 | static enum target_xfer_status |
8568 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8569 | ULONGEST length, ULONGEST *xfered_len, | |
8570 | const gdb_byte *data) | |
a76d924d | 8571 | { |
2ec845e7 TT |
8572 | scoped_restore restore_timeout |
8573 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8574 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8575 | xfered_len,'X', 0); | |
a76d924d DJ |
8576 | } |
8577 | ||
8578 | static void | |
8579 | remote_flash_done (struct target_ops *ops) | |
8580 | { | |
a76d924d | 8581 | int ret; |
a76d924d | 8582 | |
2ec845e7 TT |
8583 | scoped_restore restore_timeout |
8584 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8585 | ||
a76d924d | 8586 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8587 | |
8588 | switch (ret) | |
8589 | { | |
8590 | case PACKET_UNKNOWN: | |
8591 | error (_("Remote target does not support vFlashDone")); | |
8592 | case PACKET_ERROR: | |
8593 | error (_("Error finishing flash operation")); | |
8594 | default: | |
8595 | break; | |
8596 | } | |
8597 | } | |
8598 | ||
c906108c | 8599 | static void |
fba45db2 | 8600 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8601 | { |
8602 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8603 | } | |
8604 | \f | |
8605 | /* Stuff for dealing with the packets which are part of this protocol. | |
8606 | See comment at top of file for details. */ | |
8607 | ||
1927e618 PA |
8608 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8609 | error to higher layers. Called when a serial error is detected. | |
8610 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8611 | the system error message for errno at function entry and final dot |
8612 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8613 | |
8614 | static void | |
8615 | unpush_and_perror (const char *string) | |
8616 | { | |
d6cb50a2 | 8617 | int saved_errno = errno; |
1927e618 PA |
8618 | |
8619 | remote_unpush_target (); | |
d6cb50a2 JK |
8620 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8621 | safe_strerror (saved_errno)); | |
1927e618 PA |
8622 | } |
8623 | ||
048094ac PA |
8624 | /* Read a single character from the remote end. The current quit |
8625 | handler is overridden to avoid quitting in the middle of packet | |
8626 | sequence, as that would break communication with the remote server. | |
8627 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8628 | |
8629 | static int | |
fba45db2 | 8630 | readchar (int timeout) |
c906108c SS |
8631 | { |
8632 | int ch; | |
5d93a237 | 8633 | struct remote_state *rs = get_remote_state (); |
048094ac | 8634 | |
2ec845e7 TT |
8635 | { |
8636 | scoped_restore restore_quit | |
8637 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8638 | |
2ec845e7 | 8639 | rs->got_ctrlc_during_io = 0; |
c906108c | 8640 | |
2ec845e7 | 8641 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8642 | |
2ec845e7 TT |
8643 | if (rs->got_ctrlc_during_io) |
8644 | set_quit_flag (); | |
8645 | } | |
048094ac | 8646 | |
2acceee2 | 8647 | if (ch >= 0) |
0876f84a | 8648 | return ch; |
2acceee2 JM |
8649 | |
8650 | switch ((enum serial_rc) ch) | |
c906108c SS |
8651 | { |
8652 | case SERIAL_EOF: | |
78a095c3 | 8653 | remote_unpush_target (); |
598d3636 | 8654 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8655 | /* no return */ |
c906108c | 8656 | case SERIAL_ERROR: |
1927e618 PA |
8657 | unpush_and_perror (_("Remote communication error. " |
8658 | "Target disconnected.")); | |
2acceee2 | 8659 | /* no return */ |
c906108c | 8660 | case SERIAL_TIMEOUT: |
2acceee2 | 8661 | break; |
c906108c | 8662 | } |
2acceee2 | 8663 | return ch; |
c906108c SS |
8664 | } |
8665 | ||
c33e31fd | 8666 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8667 | writing fails. The current quit handler is overridden to avoid |
8668 | quitting in the middle of packet sequence, as that would break | |
8669 | communication with the remote server. See | |
8670 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8671 | |
8672 | static void | |
8673 | remote_serial_write (const char *str, int len) | |
8674 | { | |
5d93a237 | 8675 | struct remote_state *rs = get_remote_state (); |
048094ac | 8676 | |
2ec845e7 TT |
8677 | scoped_restore restore_quit |
8678 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8679 | |
8680 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8681 | |
8682 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8683 | { |
1927e618 PA |
8684 | unpush_and_perror (_("Remote communication error. " |
8685 | "Target disconnected.")); | |
c33e31fd | 8686 | } |
048094ac PA |
8687 | |
8688 | if (rs->got_ctrlc_during_io) | |
8689 | set_quit_flag (); | |
c33e31fd PA |
8690 | } |
8691 | ||
6d820c5c DJ |
8692 | /* Send the command in *BUF to the remote machine, and read the reply |
8693 | into *BUF. Report an error if we get an error reply. Resize | |
8694 | *BUF using xrealloc if necessary to hold the result, and update | |
8695 | *SIZEOF_BUF. */ | |
c906108c SS |
8696 | |
8697 | static void | |
6d820c5c DJ |
8698 | remote_send (char **buf, |
8699 | long *sizeof_buf) | |
c906108c | 8700 | { |
6d820c5c | 8701 | putpkt (*buf); |
c2d11a7d | 8702 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8703 | |
6d820c5c DJ |
8704 | if ((*buf)[0] == 'E') |
8705 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8706 | } |
8707 | ||
b3ced9ba PA |
8708 | /* Return a string representing an escaped version of BUF, of len N. |
8709 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8710 | |
b3ced9ba | 8711 | static std::string |
6e5abd65 PA |
8712 | escape_buffer (const char *buf, int n) |
8713 | { | |
d7e74731 | 8714 | string_file stb; |
6e5abd65 | 8715 | |
d7e74731 PA |
8716 | stb.putstrn (buf, n, '\\'); |
8717 | return std::move (stb.string ()); | |
6e5abd65 PA |
8718 | } |
8719 | ||
c906108c SS |
8720 | /* Display a null-terminated packet on stdout, for debugging, using C |
8721 | string notation. */ | |
8722 | ||
8723 | static void | |
baa336ce | 8724 | print_packet (const char *buf) |
c906108c SS |
8725 | { |
8726 | puts_filtered ("\""); | |
43e526b9 | 8727 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8728 | puts_filtered ("\""); |
8729 | } | |
8730 | ||
8731 | int | |
baa336ce | 8732 | putpkt (const char *buf) |
c906108c SS |
8733 | { |
8734 | return putpkt_binary (buf, strlen (buf)); | |
8735 | } | |
8736 | ||
8737 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8738 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8739 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8740 | and for a possible /0 if we are debugging (remote_debug) and want |
8741 | to print the sent packet as a string. */ | |
c906108c SS |
8742 | |
8743 | static int | |
baa336ce | 8744 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8745 | { |
2d717e4f | 8746 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8747 | int i; |
8748 | unsigned char csum = 0; | |
b80406ac TT |
8749 | gdb::def_vector<char> data (cnt + 6); |
8750 | char *buf2 = data.data (); | |
085dd6e6 | 8751 | |
c906108c SS |
8752 | int ch; |
8753 | int tcount = 0; | |
8754 | char *p; | |
8755 | ||
e24a49d8 PA |
8756 | /* Catch cases like trying to read memory or listing threads while |
8757 | we're waiting for a stop reply. The remote server wouldn't be | |
8758 | ready to handle this request, so we'd hang and timeout. We don't | |
8759 | have to worry about this in synchronous mode, because in that | |
8760 | case it's not possible to issue a command while the target is | |
74531fed PA |
8761 | running. This is not a problem in non-stop mode, because in that |
8762 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8763 | if (!target_is_non_stop_p () |
8764 | && target_is_async_p () | |
8765 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8766 | { |
8767 | error (_("Cannot execute this command while the target is running.\n" | |
8768 | "Use the \"interrupt\" command to stop the target\n" | |
8769 | "and then try again.")); | |
8770 | } | |
e24a49d8 | 8771 | |
2d717e4f DJ |
8772 | /* We're sending out a new packet. Make sure we don't look at a |
8773 | stale cached response. */ | |
8774 | rs->cached_wait_status = 0; | |
8775 | ||
c906108c SS |
8776 | /* Copy the packet into buffer BUF2, encapsulating it |
8777 | and giving it a checksum. */ | |
8778 | ||
c906108c SS |
8779 | p = buf2; |
8780 | *p++ = '$'; | |
8781 | ||
8782 | for (i = 0; i < cnt; i++) | |
8783 | { | |
8784 | csum += buf[i]; | |
8785 | *p++ = buf[i]; | |
8786 | } | |
8787 | *p++ = '#'; | |
8788 | *p++ = tohex ((csum >> 4) & 0xf); | |
8789 | *p++ = tohex (csum & 0xf); | |
8790 | ||
8791 | /* Send it over and over until we get a positive ack. */ | |
8792 | ||
8793 | while (1) | |
8794 | { | |
8795 | int started_error_output = 0; | |
8796 | ||
8797 | if (remote_debug) | |
8798 | { | |
8799 | *p = '\0'; | |
b3ced9ba | 8800 | |
6f8976bf YQ |
8801 | int len = (int) (p - buf2); |
8802 | ||
8803 | std::string str | |
8804 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
8805 | ||
8806 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
8807 | ||
8808 | if (str.length () > REMOTE_DEBUG_MAX_CHAR) | |
8809 | { | |
8810 | fprintf_unfiltered (gdb_stdlog, "[%zu bytes omitted]", | |
8811 | str.length () - REMOTE_DEBUG_MAX_CHAR); | |
8812 | } | |
8813 | ||
8814 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 8815 | |
0f71a2f6 | 8816 | gdb_flush (gdb_stdlog); |
c906108c | 8817 | } |
c33e31fd | 8818 | remote_serial_write (buf2, p - buf2); |
c906108c | 8819 | |
a6f3e723 SL |
8820 | /* If this is a no acks version of the remote protocol, send the |
8821 | packet and move on. */ | |
8822 | if (rs->noack_mode) | |
8823 | break; | |
8824 | ||
74531fed PA |
8825 | /* Read until either a timeout occurs (-2) or '+' is read. |
8826 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8827 | while (1) |
8828 | { | |
8829 | ch = readchar (remote_timeout); | |
8830 | ||
c5aa993b | 8831 | if (remote_debug) |
c906108c SS |
8832 | { |
8833 | switch (ch) | |
8834 | { | |
8835 | case '+': | |
1216fa2c | 8836 | case '-': |
c906108c SS |
8837 | case SERIAL_TIMEOUT: |
8838 | case '$': | |
74531fed | 8839 | case '%': |
c906108c SS |
8840 | if (started_error_output) |
8841 | { | |
8842 | putchar_unfiltered ('\n'); | |
8843 | started_error_output = 0; | |
8844 | } | |
8845 | } | |
8846 | } | |
8847 | ||
8848 | switch (ch) | |
8849 | { | |
8850 | case '+': | |
8851 | if (remote_debug) | |
0f71a2f6 | 8852 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 8853 | return 1; |
1216fa2c AC |
8854 | case '-': |
8855 | if (remote_debug) | |
8856 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8857 | /* FALLTHROUGH */ |
c906108c | 8858 | case SERIAL_TIMEOUT: |
c5aa993b | 8859 | tcount++; |
c906108c | 8860 | if (tcount > 3) |
b80406ac | 8861 | return 0; |
23860348 | 8862 | break; /* Retransmit buffer. */ |
c906108c SS |
8863 | case '$': |
8864 | { | |
40e3f985 | 8865 | if (remote_debug) |
2bc416ba | 8866 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8867 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8868 | /* It's probably an old response sent because an ACK |
8869 | was lost. Gobble up the packet and ack it so it | |
8870 | doesn't get retransmitted when we resend this | |
8871 | packet. */ | |
6d820c5c | 8872 | skip_frame (); |
c33e31fd | 8873 | remote_serial_write ("+", 1); |
23860348 | 8874 | continue; /* Now, go look for +. */ |
c906108c | 8875 | } |
74531fed PA |
8876 | |
8877 | case '%': | |
8878 | { | |
8879 | int val; | |
8880 | ||
8881 | /* If we got a notification, handle it, and go back to looking | |
8882 | for an ack. */ | |
8883 | /* We've found the start of a notification. Now | |
8884 | collect the data. */ | |
8885 | val = read_frame (&rs->buf, &rs->buf_size); | |
8886 | if (val >= 0) | |
8887 | { | |
8888 | if (remote_debug) | |
8889 | { | |
b3ced9ba | 8890 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 8891 | |
6e5abd65 PA |
8892 | fprintf_unfiltered (gdb_stdlog, |
8893 | " Notification received: %s\n", | |
b3ced9ba | 8894 | str.c_str ()); |
74531fed | 8895 | } |
5965e028 | 8896 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8897 | /* We're in sync now, rewait for the ack. */ |
8898 | tcount = 0; | |
8899 | } | |
8900 | else | |
8901 | { | |
8902 | if (remote_debug) | |
8903 | { | |
8904 | if (!started_error_output) | |
8905 | { | |
8906 | started_error_output = 1; | |
8907 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8908 | } | |
8909 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8910 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8911 | } | |
8912 | } | |
8913 | continue; | |
8914 | } | |
8915 | /* fall-through */ | |
c906108c SS |
8916 | default: |
8917 | if (remote_debug) | |
8918 | { | |
8919 | if (!started_error_output) | |
8920 | { | |
8921 | started_error_output = 1; | |
0f71a2f6 | 8922 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8923 | } |
0f71a2f6 | 8924 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8925 | } |
8926 | continue; | |
8927 | } | |
23860348 | 8928 | break; /* Here to retransmit. */ |
c906108c SS |
8929 | } |
8930 | ||
8931 | #if 0 | |
8932 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8933 | able to get out next time we call QUIT, without anything as |
8934 | violent as interrupt_query. If we want to provide a way out of | |
8935 | here without getting to the next QUIT, it should be based on | |
8936 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8937 | if (quit_flag) |
8938 | { | |
8939 | quit_flag = 0; | |
8940 | interrupt_query (); | |
8941 | } | |
8942 | #endif | |
8943 | } | |
a5c0808e | 8944 | |
a6f3e723 | 8945 | return 0; |
c906108c SS |
8946 | } |
8947 | ||
6d820c5c DJ |
8948 | /* Come here after finding the start of a frame when we expected an |
8949 | ack. Do our best to discard the rest of this packet. */ | |
8950 | ||
8951 | static void | |
8952 | skip_frame (void) | |
8953 | { | |
8954 | int c; | |
8955 | ||
8956 | while (1) | |
8957 | { | |
8958 | c = readchar (remote_timeout); | |
8959 | switch (c) | |
8960 | { | |
8961 | case SERIAL_TIMEOUT: | |
8962 | /* Nothing we can do. */ | |
8963 | return; | |
8964 | case '#': | |
8965 | /* Discard the two bytes of checksum and stop. */ | |
8966 | c = readchar (remote_timeout); | |
8967 | if (c >= 0) | |
8968 | c = readchar (remote_timeout); | |
8969 | ||
8970 | return; | |
8971 | case '*': /* Run length encoding. */ | |
8972 | /* Discard the repeat count. */ | |
8973 | c = readchar (remote_timeout); | |
8974 | if (c < 0) | |
8975 | return; | |
8976 | break; | |
8977 | default: | |
8978 | /* A regular character. */ | |
8979 | break; | |
8980 | } | |
8981 | } | |
8982 | } | |
8983 | ||
c906108c | 8984 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8985 | into *BUF, verifying the checksum, length, and handling run-length |
8986 | compression. NUL terminate the buffer. If there is not enough room, | |
8987 | expand *BUF using xrealloc. | |
c906108c | 8988 | |
c2d11a7d JM |
8989 | Returns -1 on error, number of characters in buffer (ignoring the |
8990 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8991 | SERIAL status indications). */ |
c2d11a7d JM |
8992 | |
8993 | static long | |
6d820c5c DJ |
8994 | read_frame (char **buf_p, |
8995 | long *sizeof_buf) | |
c906108c SS |
8996 | { |
8997 | unsigned char csum; | |
c2d11a7d | 8998 | long bc; |
c906108c | 8999 | int c; |
6d820c5c | 9000 | char *buf = *buf_p; |
a6f3e723 | 9001 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9002 | |
9003 | csum = 0; | |
c2d11a7d | 9004 | bc = 0; |
c906108c SS |
9005 | |
9006 | while (1) | |
9007 | { | |
9008 | c = readchar (remote_timeout); | |
c906108c SS |
9009 | switch (c) |
9010 | { | |
9011 | case SERIAL_TIMEOUT: | |
9012 | if (remote_debug) | |
0f71a2f6 | 9013 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9014 | return -1; |
c906108c SS |
9015 | case '$': |
9016 | if (remote_debug) | |
0f71a2f6 JM |
9017 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9018 | gdb_stdlog); | |
23860348 | 9019 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9020 | case '#': |
9021 | { | |
9022 | unsigned char pktcsum; | |
e1b09194 AC |
9023 | int check_0 = 0; |
9024 | int check_1 = 0; | |
c906108c | 9025 | |
c2d11a7d | 9026 | buf[bc] = '\0'; |
c906108c | 9027 | |
e1b09194 AC |
9028 | check_0 = readchar (remote_timeout); |
9029 | if (check_0 >= 0) | |
9030 | check_1 = readchar (remote_timeout); | |
802188a7 | 9031 | |
e1b09194 AC |
9032 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9033 | { | |
9034 | if (remote_debug) | |
2bc416ba | 9035 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9036 | gdb_stdlog); |
e1b09194 AC |
9037 | return -1; |
9038 | } | |
9039 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9040 | { |
9041 | if (remote_debug) | |
2bc416ba | 9042 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9043 | gdb_stdlog); |
40e3f985 FN |
9044 | return -1; |
9045 | } | |
c906108c | 9046 | |
a6f3e723 SL |
9047 | /* Don't recompute the checksum; with no ack packets we |
9048 | don't have any way to indicate a packet retransmission | |
9049 | is necessary. */ | |
9050 | if (rs->noack_mode) | |
9051 | return bc; | |
9052 | ||
e1b09194 | 9053 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9054 | if (csum == pktcsum) |
c2d11a7d | 9055 | return bc; |
c906108c | 9056 | |
c5aa993b | 9057 | if (remote_debug) |
c906108c | 9058 | { |
b3ced9ba | 9059 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9060 | |
6e5abd65 | 9061 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9062 | "Bad checksum, sentsum=0x%x, " |
9063 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9064 | pktcsum, csum, str.c_str ()); |
c906108c | 9065 | } |
c2d11a7d | 9066 | /* Number of characters in buffer ignoring trailing |
23860348 | 9067 | NULL. */ |
c2d11a7d | 9068 | return -1; |
c906108c | 9069 | } |
23860348 | 9070 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9071 | { |
9072 | int repeat; | |
c906108c | 9073 | |
a744cf53 | 9074 | csum += c; |
b4501125 AC |
9075 | c = readchar (remote_timeout); |
9076 | csum += c; | |
23860348 | 9077 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9078 | |
23860348 | 9079 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9080 | |
6d820c5c | 9081 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9082 | { |
6d820c5c DJ |
9083 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
9084 | { | |
9085 | /* Make some more room in the buffer. */ | |
9086 | *sizeof_buf += repeat; | |
224c3ddb | 9087 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9088 | buf = *buf_p; |
9089 | } | |
9090 | ||
c2d11a7d JM |
9091 | memset (&buf[bc], buf[bc - 1], repeat); |
9092 | bc += repeat; | |
c2c6d25f JM |
9093 | continue; |
9094 | } | |
9095 | ||
c2d11a7d | 9096 | buf[bc] = '\0'; |
6d820c5c | 9097 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9098 | return -1; |
c2c6d25f | 9099 | } |
c906108c | 9100 | default: |
6d820c5c | 9101 | if (bc >= *sizeof_buf - 1) |
c906108c | 9102 | { |
6d820c5c DJ |
9103 | /* Make some more room in the buffer. */ |
9104 | *sizeof_buf *= 2; | |
224c3ddb | 9105 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9106 | buf = *buf_p; |
c906108c SS |
9107 | } |
9108 | ||
6d820c5c DJ |
9109 | buf[bc++] = c; |
9110 | csum += c; | |
9111 | continue; | |
c906108c SS |
9112 | } |
9113 | } | |
9114 | } | |
9115 | ||
9116 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9117 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9118 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9119 | rather than timing out; this is used (in synchronous mode) to wait | |
9120 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9121 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9122 | don't have to change all the calls to getpkt to deal with the | |
9123 | return value, because at the moment I don't know what the right | |
23860348 | 9124 | thing to do it for those. */ |
c906108c | 9125 | void |
6d820c5c DJ |
9126 | getpkt (char **buf, |
9127 | long *sizeof_buf, | |
c2d11a7d | 9128 | int forever) |
d9fcf2fb | 9129 | { |
54887903 | 9130 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9131 | } |
9132 | ||
9133 | ||
9134 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9135 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9136 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9137 | rather than timing out; this is used (in synchronous mode) to wait | |
9138 | for a target that is is executing user code to stop. If FOREVER == | |
9139 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9140 | indication of this to the caller. Otherwise return the number of |
9141 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9142 | enough reason to return to the caller. *IS_NOTIF is an output |
9143 | boolean that indicates whether *BUF holds a notification or not | |
9144 | (a regular packet). */ | |
74531fed | 9145 | |
3172dc30 | 9146 | static int |
74531fed | 9147 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9148 | int expecting_notif, int *is_notif) |
c906108c | 9149 | { |
2d717e4f | 9150 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9151 | int c; |
9152 | int tries; | |
9153 | int timeout; | |
df4b58fe | 9154 | int val = -1; |
c906108c | 9155 | |
2d717e4f DJ |
9156 | /* We're reading a new response. Make sure we don't look at a |
9157 | previously cached response. */ | |
9158 | rs->cached_wait_status = 0; | |
9159 | ||
6d820c5c | 9160 | strcpy (*buf, "timeout"); |
c906108c SS |
9161 | |
9162 | if (forever) | |
74531fed PA |
9163 | timeout = watchdog > 0 ? watchdog : -1; |
9164 | else if (expecting_notif) | |
9165 | timeout = 0; /* There should already be a char in the buffer. If | |
9166 | not, bail out. */ | |
c906108c SS |
9167 | else |
9168 | timeout = remote_timeout; | |
9169 | ||
9170 | #define MAX_TRIES 3 | |
9171 | ||
74531fed PA |
9172 | /* Process any number of notifications, and then return when |
9173 | we get a packet. */ | |
9174 | for (;;) | |
c906108c | 9175 | { |
d9c43928 | 9176 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9177 | times. */ |
9178 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9179 | { |
74531fed PA |
9180 | /* This can loop forever if the remote side sends us |
9181 | characters continuously, but if it pauses, we'll get | |
9182 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9183 | we'll count that as a retry. | |
9184 | ||
9185 | Note that even when forever is set, we will only wait | |
9186 | forever prior to the start of a packet. After that, we | |
9187 | expect characters to arrive at a brisk pace. They should | |
9188 | show up within remote_timeout intervals. */ | |
9189 | do | |
9190 | c = readchar (timeout); | |
9191 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9192 | |
9193 | if (c == SERIAL_TIMEOUT) | |
9194 | { | |
74531fed PA |
9195 | if (expecting_notif) |
9196 | return -1; /* Don't complain, it's normal to not get | |
9197 | anything in this case. */ | |
9198 | ||
23860348 | 9199 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9200 | { |
78a095c3 | 9201 | remote_unpush_target (); |
598d3636 JK |
9202 | throw_error (TARGET_CLOSE_ERROR, |
9203 | _("Watchdog timeout has expired. " | |
9204 | "Target detached.")); | |
c906108c | 9205 | } |
c906108c | 9206 | if (remote_debug) |
0f71a2f6 | 9207 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9208 | } |
74531fed PA |
9209 | else |
9210 | { | |
9211 | /* We've found the start of a packet or notification. | |
9212 | Now collect the data. */ | |
9213 | val = read_frame (buf, sizeof_buf); | |
9214 | if (val >= 0) | |
9215 | break; | |
9216 | } | |
9217 | ||
c33e31fd | 9218 | remote_serial_write ("-", 1); |
c906108c | 9219 | } |
c906108c | 9220 | |
74531fed PA |
9221 | if (tries > MAX_TRIES) |
9222 | { | |
9223 | /* We have tried hard enough, and just can't receive the | |
9224 | packet/notification. Give up. */ | |
9225 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9226 | |
74531fed PA |
9227 | /* Skip the ack char if we're in no-ack mode. */ |
9228 | if (!rs->noack_mode) | |
c33e31fd | 9229 | remote_serial_write ("+", 1); |
74531fed PA |
9230 | return -1; |
9231 | } | |
c906108c | 9232 | |
74531fed PA |
9233 | /* If we got an ordinary packet, return that to our caller. */ |
9234 | if (c == '$') | |
c906108c SS |
9235 | { |
9236 | if (remote_debug) | |
43e526b9 | 9237 | { |
6f8976bf YQ |
9238 | std::string str |
9239 | = escape_buffer (*buf, | |
9240 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9241 | ||
9242 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9243 | str.c_str ()); | |
9244 | ||
9245 | if (str.length () > REMOTE_DEBUG_MAX_CHAR) | |
9246 | { | |
9247 | fprintf_unfiltered (gdb_stdlog, "[%zu bytes omitted]", | |
9248 | str.length () - REMOTE_DEBUG_MAX_CHAR); | |
9249 | } | |
6e5abd65 | 9250 | |
6f8976bf | 9251 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9252 | } |
a6f3e723 SL |
9253 | |
9254 | /* Skip the ack char if we're in no-ack mode. */ | |
9255 | if (!rs->noack_mode) | |
c33e31fd | 9256 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9257 | if (is_notif != NULL) |
9258 | *is_notif = 0; | |
0876f84a | 9259 | return val; |
c906108c SS |
9260 | } |
9261 | ||
74531fed PA |
9262 | /* If we got a notification, handle it, and go back to looking |
9263 | for a packet. */ | |
9264 | else | |
9265 | { | |
9266 | gdb_assert (c == '%'); | |
9267 | ||
9268 | if (remote_debug) | |
9269 | { | |
b3ced9ba | 9270 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9271 | |
6e5abd65 PA |
9272 | fprintf_unfiltered (gdb_stdlog, |
9273 | " Notification received: %s\n", | |
b3ced9ba | 9274 | str.c_str ()); |
74531fed | 9275 | } |
fee9eda9 YQ |
9276 | if (is_notif != NULL) |
9277 | *is_notif = 1; | |
c906108c | 9278 | |
5965e028 | 9279 | handle_notification (rs->notif_state, *buf); |
c906108c | 9280 | |
74531fed | 9281 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9282 | |
74531fed | 9283 | if (expecting_notif) |
fee9eda9 | 9284 | return val; |
74531fed PA |
9285 | } |
9286 | } | |
9287 | } | |
9288 | ||
9289 | static int | |
9290 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9291 | { | |
fee9eda9 | 9292 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9293 | } |
9294 | ||
9295 | static int | |
fee9eda9 YQ |
9296 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9297 | int *is_notif) | |
74531fed | 9298 | { |
fee9eda9 YQ |
9299 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9300 | is_notif); | |
c906108c | 9301 | } |
74531fed | 9302 | |
cbb8991c DB |
9303 | /* Check whether EVENT is a fork event for the process specified |
9304 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9305 | ||
9306 | static int | |
9307 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9308 | QUEUE_ITER (stop_reply_p) *iter, | |
9309 | stop_reply_p event, | |
9310 | void *data) | |
9311 | { | |
19ba03f4 | 9312 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9313 | int parent_pid = *(int *) param->input; |
9314 | ||
9315 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9316 | { | |
9317 | struct remote_state *rs = get_remote_state (); | |
9318 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9319 | int res; | |
9320 | ||
9321 | res = remote_vkill (child_pid, rs); | |
9322 | if (res != 0) | |
9323 | error (_("Can't kill fork child process %d"), child_pid); | |
9324 | } | |
9325 | ||
9326 | return 1; | |
9327 | } | |
9328 | ||
9329 | /* Kill any new fork children of process PID that haven't been | |
9330 | processed by follow_fork. */ | |
9331 | ||
9332 | static void | |
9333 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9334 | { | |
9335 | struct thread_info *thread; | |
9336 | struct notif_client *notif = ¬if_client_stop; | |
9337 | struct queue_iter_param param; | |
9338 | ||
9339 | /* Kill the fork child threads of any threads in process PID | |
9340 | that are stopped at a fork event. */ | |
9341 | ALL_NON_EXITED_THREADS (thread) | |
9342 | { | |
9343 | struct target_waitstatus *ws = &thread->pending_follow; | |
9344 | ||
9345 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9346 | { | |
9347 | struct remote_state *rs = get_remote_state (); | |
9348 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9349 | int res; | |
9350 | ||
9351 | res = remote_vkill (child_pid, rs); | |
9352 | if (res != 0) | |
9353 | error (_("Can't kill fork child process %d"), child_pid); | |
9354 | } | |
9355 | } | |
9356 | ||
9357 | /* Check for any pending fork events (not reported or processed yet) | |
9358 | in process PID and kill those fork child threads as well. */ | |
9359 | remote_notif_get_pending_events (notif); | |
9360 | param.input = &pid; | |
9361 | param.output = NULL; | |
9362 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9363 | kill_child_of_pending_fork, ¶m); | |
9364 | } | |
9365 | ||
c906108c | 9366 | \f |
8020350c DB |
9367 | /* Target hook to kill the current inferior. */ |
9368 | ||
c906108c | 9369 | static void |
7d85a9c0 | 9370 | remote_kill (struct target_ops *ops) |
43ff13b4 | 9371 | { |
8020350c DB |
9372 | int res = -1; |
9373 | int pid = ptid_get_pid (inferior_ptid); | |
9374 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9375 | |
8020350c | 9376 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9377 | { |
8020350c DB |
9378 | /* If we're stopped while forking and we haven't followed yet, |
9379 | kill the child task. We need to do this before killing the | |
9380 | parent task because if this is a vfork then the parent will | |
9381 | be sleeping. */ | |
9382 | kill_new_fork_children (pid, rs); | |
9383 | ||
9384 | res = remote_vkill (pid, rs); | |
9385 | if (res == 0) | |
0fdf84ca | 9386 | { |
bc1e6c81 | 9387 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9388 | return; |
9389 | } | |
8020350c | 9390 | } |
0fdf84ca | 9391 | |
8020350c DB |
9392 | /* If we are in 'target remote' mode and we are killing the only |
9393 | inferior, then we will tell gdbserver to exit and unpush the | |
9394 | target. */ | |
9395 | if (res == -1 && !remote_multi_process_p (rs) | |
9396 | && number_of_live_inferiors () == 1) | |
9397 | { | |
9398 | remote_kill_k (); | |
9399 | ||
9400 | /* We've killed the remote end, we get to mourn it. If we are | |
9401 | not in extended mode, mourning the inferior also unpushes | |
9402 | remote_ops from the target stack, which closes the remote | |
9403 | connection. */ | |
bc1e6c81 | 9404 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9405 | |
9406 | return; | |
0fdf84ca | 9407 | } |
43ff13b4 | 9408 | |
8020350c | 9409 | error (_("Can't kill process")); |
43ff13b4 JM |
9410 | } |
9411 | ||
8020350c DB |
9412 | /* Send a kill request to the target using the 'vKill' packet. */ |
9413 | ||
82f73884 PA |
9414 | static int |
9415 | remote_vkill (int pid, struct remote_state *rs) | |
9416 | { | |
4082afcc | 9417 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9418 | return -1; |
9419 | ||
9420 | /* Tell the remote target to detach. */ | |
bba74b36 | 9421 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9422 | putpkt (rs->buf); |
9423 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9424 | ||
4082afcc PA |
9425 | switch (packet_ok (rs->buf, |
9426 | &remote_protocol_packets[PACKET_vKill])) | |
9427 | { | |
9428 | case PACKET_OK: | |
9429 | return 0; | |
9430 | case PACKET_ERROR: | |
9431 | return 1; | |
9432 | case PACKET_UNKNOWN: | |
9433 | return -1; | |
9434 | default: | |
9435 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9436 | } | |
82f73884 PA |
9437 | } |
9438 | ||
8020350c DB |
9439 | /* Send a kill request to the target using the 'k' packet. */ |
9440 | ||
82f73884 | 9441 | static void |
8020350c | 9442 | remote_kill_k (void) |
82f73884 | 9443 | { |
8020350c DB |
9444 | /* Catch errors so the user can quit from gdb even when we |
9445 | aren't on speaking terms with the remote system. */ | |
9446 | TRY | |
82f73884 | 9447 | { |
82f73884 | 9448 | putpkt ("k"); |
82f73884 | 9449 | } |
8020350c DB |
9450 | CATCH (ex, RETURN_MASK_ERROR) |
9451 | { | |
9452 | if (ex.error == TARGET_CLOSE_ERROR) | |
9453 | { | |
9454 | /* If we got an (EOF) error that caused the target | |
9455 | to go away, then we're done, that's what we wanted. | |
9456 | "k" is susceptible to cause a premature EOF, given | |
9457 | that the remote server isn't actually required to | |
9458 | reply to "k", and it can happen that it doesn't | |
9459 | even get to reply ACK to the "k". */ | |
9460 | return; | |
9461 | } | |
82f73884 | 9462 | |
8020350c DB |
9463 | /* Otherwise, something went wrong. We didn't actually kill |
9464 | the target. Just propagate the exception, and let the | |
9465 | user or higher layers decide what to do. */ | |
9466 | throw_exception (ex); | |
9467 | } | |
9468 | END_CATCH | |
82f73884 PA |
9469 | } |
9470 | ||
c906108c | 9471 | static void |
20f796c9 | 9472 | remote_mourn (struct target_ops *target) |
c906108c | 9473 | { |
8020350c | 9474 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9475 | |
8020350c DB |
9476 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9477 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9478 | { | |
9479 | unpush_target (target); | |
c906108c | 9480 | |
8020350c DB |
9481 | /* remote_close takes care of doing most of the clean up. */ |
9482 | generic_mourn_inferior (); | |
9483 | return; | |
9484 | } | |
c906108c | 9485 | |
e24a49d8 PA |
9486 | /* In case we got here due to an error, but we're going to stay |
9487 | connected. */ | |
9488 | rs->waiting_for_stop_reply = 0; | |
9489 | ||
dc1981d7 PA |
9490 | /* If the current general thread belonged to the process we just |
9491 | detached from or has exited, the remote side current general | |
9492 | thread becomes undefined. Considering a case like this: | |
9493 | ||
9494 | - We just got here due to a detach. | |
9495 | - The process that we're detaching from happens to immediately | |
9496 | report a global breakpoint being hit in non-stop mode, in the | |
9497 | same thread we had selected before. | |
9498 | - GDB attaches to this process again. | |
9499 | - This event happens to be the next event we handle. | |
9500 | ||
9501 | GDB would consider that the current general thread didn't need to | |
9502 | be set on the stub side (with Hg), since for all it knew, | |
9503 | GENERAL_THREAD hadn't changed. | |
9504 | ||
9505 | Notice that although in all-stop mode, the remote server always | |
9506 | sets the current thread to the thread reporting the stop event, | |
9507 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9508 | not* change the current thread when reporting a breakpoint hit, | |
9509 | due to the decoupling of event reporting and event handling. | |
9510 | ||
9511 | To keep things simple, we always invalidate our notion of the | |
9512 | current thread. */ | |
47f8a51d | 9513 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9514 | |
8020350c | 9515 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9516 | generic_mourn_inferior (); |
9517 | ||
d729566a | 9518 | if (!have_inferiors ()) |
2d717e4f | 9519 | { |
82f73884 PA |
9520 | if (!remote_multi_process_p (rs)) |
9521 | { | |
9522 | /* Check whether the target is running now - some remote stubs | |
9523 | automatically restart after kill. */ | |
9524 | putpkt ("?"); | |
9525 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9526 | ||
9527 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9528 | { | |
3e43a32a MS |
9529 | /* Assume that the target has been restarted. Set |
9530 | inferior_ptid so that bits of core GDB realizes | |
9531 | there's something here, e.g., so that the user can | |
9532 | say "kill" again. */ | |
82f73884 PA |
9533 | inferior_ptid = magic_null_ptid; |
9534 | } | |
82f73884 | 9535 | } |
2d717e4f DJ |
9536 | } |
9537 | } | |
c906108c | 9538 | |
03583c20 | 9539 | static int |
2bfc0540 | 9540 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9541 | { |
4082afcc | 9542 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9543 | } |
9544 | ||
9545 | static void | |
9546 | extended_remote_disable_randomization (int val) | |
9547 | { | |
9548 | struct remote_state *rs = get_remote_state (); | |
9549 | char *reply; | |
9550 | ||
bba74b36 YQ |
9551 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9552 | val); | |
03583c20 | 9553 | putpkt (rs->buf); |
b6bb3468 | 9554 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9555 | if (*reply == '\0') |
9556 | error (_("Target does not support QDisableRandomization.")); | |
9557 | if (strcmp (reply, "OK") != 0) | |
9558 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9559 | } | |
9560 | ||
2d717e4f | 9561 | static int |
7c5ded6a | 9562 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9563 | { |
9564 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9565 | int len; |
94585166 | 9566 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9567 | |
2d717e4f DJ |
9568 | /* If the user has disabled vRun support, or we have detected that |
9569 | support is not available, do not try it. */ | |
4082afcc | 9570 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9571 | return -1; |
424163ea | 9572 | |
2d717e4f DJ |
9573 | strcpy (rs->buf, "vRun;"); |
9574 | len = strlen (rs->buf); | |
c906108c | 9575 | |
2d717e4f DJ |
9576 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9577 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9578 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9579 | strlen (remote_exec_file)); | |
2d717e4f | 9580 | |
7c5ded6a | 9581 | if (!args.empty ()) |
2d717e4f | 9582 | { |
2d717e4f | 9583 | int i; |
2d717e4f | 9584 | |
773a1edc | 9585 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9586 | for (i = 0; argv[i] != NULL; i++) |
9587 | { | |
9588 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9589 | error (_("Argument list too long for run packet")); | |
9590 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9591 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9592 | strlen (argv[i])); | |
2d717e4f | 9593 | } |
2d717e4f DJ |
9594 | } |
9595 | ||
9596 | rs->buf[len++] = '\0'; | |
9597 | ||
9598 | putpkt (rs->buf); | |
9599 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9600 | ||
4082afcc | 9601 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9602 | { |
4082afcc | 9603 | case PACKET_OK: |
3405876a | 9604 | /* We have a wait response. All is well. */ |
2d717e4f | 9605 | return 0; |
4082afcc PA |
9606 | case PACKET_UNKNOWN: |
9607 | return -1; | |
9608 | case PACKET_ERROR: | |
2d717e4f DJ |
9609 | if (remote_exec_file[0] == '\0') |
9610 | error (_("Running the default executable on the remote target failed; " | |
9611 | "try \"set remote exec-file\"?")); | |
9612 | else | |
9613 | error (_("Running \"%s\" on the remote target failed"), | |
9614 | remote_exec_file); | |
4082afcc PA |
9615 | default: |
9616 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9617 | } |
c906108c SS |
9618 | } |
9619 | ||
0a2dde4a SDJ |
9620 | /* Helper function to send set/unset environment packets. ACTION is |
9621 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9622 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9623 | sent. */ | |
9624 | ||
9625 | static void | |
9626 | send_environment_packet (struct remote_state *rs, | |
9627 | const char *action, | |
9628 | const char *packet, | |
9629 | const char *value) | |
9630 | { | |
9631 | /* Convert the environment variable to an hex string, which | |
9632 | is the best format to be transmitted over the wire. */ | |
9633 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9634 | strlen (value)); | |
9635 | ||
9636 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9637 | "%s:%s", packet, encoded_value.c_str ()); | |
9638 | ||
9639 | putpkt (rs->buf); | |
9640 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9641 | if (strcmp (rs->buf, "OK") != 0) | |
9642 | warning (_("Unable to %s environment variable '%s' on remote."), | |
9643 | action, value); | |
9644 | } | |
9645 | ||
9646 | /* Helper function to handle the QEnvironment* packets. */ | |
9647 | ||
9648 | static void | |
9649 | extended_remote_environment_support (struct remote_state *rs) | |
9650 | { | |
9651 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) | |
9652 | { | |
9653 | putpkt ("QEnvironmentReset"); | |
9654 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9655 | if (strcmp (rs->buf, "OK") != 0) | |
9656 | warning (_("Unable to reset environment on remote.")); | |
9657 | } | |
9658 | ||
9659 | gdb_environ *e = ¤t_inferior ()->environment; | |
9660 | ||
9661 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9662 | for (const std::string &el : e->user_set_env ()) | |
9663 | send_environment_packet (rs, "set", "QEnvironmentHexEncoded", | |
9664 | el.c_str ()); | |
9665 | ||
9666 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9667 | for (const std::string &el : e->user_unset_env ()) | |
9668 | send_environment_packet (rs, "unset", "QEnvironmentUnset", el.c_str ()); | |
9669 | } | |
9670 | ||
bc3b087d SDJ |
9671 | /* Helper function to set the current working directory for the |
9672 | inferior in the remote target. */ | |
9673 | ||
9674 | static void | |
9675 | extended_remote_set_inferior_cwd (struct remote_state *rs) | |
9676 | { | |
9677 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
9678 | { | |
9679 | const char *inferior_cwd = get_inferior_cwd (); | |
9680 | ||
9681 | if (inferior_cwd != NULL) | |
9682 | { | |
9683 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
9684 | strlen (inferior_cwd)); | |
9685 | ||
9686 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9687 | "QSetWorkingDir:%s", hexpath.c_str ()); | |
9688 | } | |
9689 | else | |
9690 | { | |
9691 | /* An empty inferior_cwd means that the user wants us to | |
9692 | reset the remote server's inferior's cwd. */ | |
9693 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9694 | "QSetWorkingDir:"); | |
9695 | } | |
9696 | ||
9697 | putpkt (rs->buf); | |
9698 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9699 | if (packet_ok (rs->buf, | |
9700 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
9701 | != PACKET_OK) | |
9702 | error (_("\ | |
9703 | Remote replied unexpectedly while setting the inferior's working\n\ | |
9704 | directory: %s"), | |
9705 | rs->buf); | |
9706 | ||
9707 | } | |
9708 | } | |
9709 | ||
2d717e4f DJ |
9710 | /* In the extended protocol we want to be able to do things like |
9711 | "run" and have them basically work as expected. So we need | |
9712 | a special create_inferior function. We support changing the | |
9713 | executable file and the command line arguments, but not the | |
9714 | environment. */ | |
9715 | ||
43ff13b4 | 9716 | static void |
77a19445 | 9717 | extended_remote_create_inferior (struct target_ops *ops, |
7c5ded6a SDJ |
9718 | const char *exec_file, |
9719 | const std::string &args, | |
77a19445 | 9720 | char **env, int from_tty) |
43ff13b4 | 9721 | { |
3405876a PA |
9722 | int run_worked; |
9723 | char *stop_reply; | |
9724 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9725 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9726 | |
43ff13b4 | 9727 | /* If running asynchronously, register the target file descriptor |
23860348 | 9728 | with the event loop. */ |
75c99385 | 9729 | if (target_can_async_p ()) |
6a3753b3 | 9730 | target_async (1); |
43ff13b4 | 9731 | |
03583c20 | 9732 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9733 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9734 | extended_remote_disable_randomization (disable_randomization); |
9735 | ||
aefd8b33 SDJ |
9736 | /* If startup-with-shell is on, we inform gdbserver to start the |
9737 | remote inferior using a shell. */ | |
9738 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9739 | { | |
9740 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9741 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9742 | putpkt (rs->buf); | |
9743 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9744 | if (strcmp (rs->buf, "OK") != 0) | |
9745 | error (_("\ | |
9746 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9747 | rs->buf); | |
9748 | } | |
9749 | ||
0a2dde4a SDJ |
9750 | extended_remote_environment_support (rs); |
9751 | ||
bc3b087d SDJ |
9752 | extended_remote_set_inferior_cwd (rs); |
9753 | ||
43ff13b4 | 9754 | /* Now restart the remote server. */ |
3405876a PA |
9755 | run_worked = extended_remote_run (args) != -1; |
9756 | if (!run_worked) | |
2d717e4f DJ |
9757 | { |
9758 | /* vRun was not supported. Fail if we need it to do what the | |
9759 | user requested. */ | |
9760 | if (remote_exec_file[0]) | |
9761 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9762 | if (!args.empty ()) |
2d717e4f | 9763 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9764 | |
2d717e4f DJ |
9765 | /* Fall back to "R". */ |
9766 | extended_remote_restart (); | |
9767 | } | |
424163ea | 9768 | |
6c95b8df PA |
9769 | if (!have_inferiors ()) |
9770 | { | |
9771 | /* Clean up from the last time we ran, before we mark the target | |
9772 | running again. This will mark breakpoints uninserted, and | |
9773 | get_offsets may insert breakpoints. */ | |
9774 | init_thread_list (); | |
9775 | init_wait_for_inferior (); | |
9776 | } | |
45280a52 | 9777 | |
3405876a PA |
9778 | /* vRun's success return is a stop reply. */ |
9779 | stop_reply = run_worked ? rs->buf : NULL; | |
9780 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9781 | |
2d717e4f DJ |
9782 | /* Get updated offsets, if the stub uses qOffsets. */ |
9783 | get_offsets (); | |
2d717e4f | 9784 | } |
c906108c | 9785 | \f |
c5aa993b | 9786 | |
b775012e LM |
9787 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9788 | the list of conditions (in agent expression bytecode format), if any, the | |
9789 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9790 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9791 | |
9792 | static int | |
9793 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9794 | struct bp_target_info *bp_tgt, char *buf, |
9795 | char *buf_end) | |
b775012e | 9796 | { |
3cde5c42 | 9797 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
9798 | return 0; |
9799 | ||
9800 | buf += strlen (buf); | |
bba74b36 | 9801 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9802 | buf++; |
9803 | ||
83621223 | 9804 | /* Send conditions to the target. */ |
d538e36d | 9805 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 9806 | { |
bba74b36 | 9807 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 9808 | buf += strlen (buf); |
3cde5c42 | 9809 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
9810 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9811 | *buf = '\0'; | |
9812 | } | |
b775012e LM |
9813 | return 0; |
9814 | } | |
9815 | ||
d3ce09f5 SS |
9816 | static void |
9817 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9818 | struct bp_target_info *bp_tgt, char *buf) | |
9819 | { | |
3cde5c42 | 9820 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
9821 | return; |
9822 | ||
9823 | buf += strlen (buf); | |
9824 | ||
9825 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9826 | buf += strlen (buf); | |
9827 | ||
9828 | /* Concatenate all the agent expressions that are commands into the | |
9829 | cmds parameter. */ | |
df97be55 | 9830 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
9831 | { |
9832 | sprintf (buf, "X%x,", aexpr->len); | |
9833 | buf += strlen (buf); | |
3cde5c42 | 9834 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
9835 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9836 | *buf = '\0'; | |
9837 | } | |
d3ce09f5 SS |
9838 | } |
9839 | ||
8181d85f DJ |
9840 | /* Insert a breakpoint. On targets that have software breakpoint |
9841 | support, we ask the remote target to do the work; on targets | |
9842 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9843 | |
9844 | static int | |
3db08215 MM |
9845 | remote_insert_breakpoint (struct target_ops *ops, |
9846 | struct gdbarch *gdbarch, | |
a6d9a66e | 9847 | struct bp_target_info *bp_tgt) |
c906108c | 9848 | { |
d471ea57 AC |
9849 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9850 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9851 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9852 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9853 | |
4082afcc | 9854 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9855 | { |
0d5ed153 | 9856 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9857 | struct remote_state *rs; |
bba74b36 | 9858 | char *p, *endbuf; |
7c0f6dcc | 9859 | int bpsize; |
4fff2411 | 9860 | |
28439a30 PA |
9861 | /* Make sure the remote is pointing at the right process, if |
9862 | necessary. */ | |
9863 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9864 | set_general_process (); | |
9865 | ||
4fff2411 JZ |
9866 | rs = get_remote_state (); |
9867 | p = rs->buf; | |
bba74b36 | 9868 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9869 | |
96baa820 JM |
9870 | *(p++) = 'Z'; |
9871 | *(p++) = '0'; | |
9872 | *(p++) = ','; | |
7c0f6dcc | 9873 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9874 | p += hexnumstr (p, addr); |
579c6ad9 | 9875 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9876 | |
efcc2da7 | 9877 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9878 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9879 | |
78eff0ec | 9880 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9881 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9882 | ||
6d820c5c DJ |
9883 | putpkt (rs->buf); |
9884 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9885 | |
6d820c5c | 9886 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9887 | { |
d471ea57 AC |
9888 | case PACKET_ERROR: |
9889 | return -1; | |
9890 | case PACKET_OK: | |
9891 | return 0; | |
9892 | case PACKET_UNKNOWN: | |
9893 | break; | |
96baa820 JM |
9894 | } |
9895 | } | |
c906108c | 9896 | |
0000e5cc PA |
9897 | /* If this breakpoint has target-side commands but this stub doesn't |
9898 | support Z0 packets, throw error. */ | |
3cde5c42 | 9899 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
9900 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
9901 | Target doesn't support breakpoints that have target side commands.")); | |
9902 | ||
3db08215 | 9903 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9904 | } |
9905 | ||
9906 | static int | |
3db08215 MM |
9907 | remote_remove_breakpoint (struct target_ops *ops, |
9908 | struct gdbarch *gdbarch, | |
73971819 PA |
9909 | struct bp_target_info *bp_tgt, |
9910 | enum remove_bp_reason reason) | |
c906108c | 9911 | { |
8181d85f | 9912 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9913 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9914 | |
4082afcc | 9915 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9916 | { |
6d820c5c | 9917 | char *p = rs->buf; |
bba74b36 | 9918 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9919 | |
28439a30 PA |
9920 | /* Make sure the remote is pointing at the right process, if |
9921 | necessary. */ | |
9922 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9923 | set_general_process (); | |
9924 | ||
96baa820 JM |
9925 | *(p++) = 'z'; |
9926 | *(p++) = '0'; | |
9927 | *(p++) = ','; | |
9928 | ||
8181d85f DJ |
9929 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9930 | p += hexnumstr (p, addr); | |
579c6ad9 | 9931 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9932 | |
6d820c5c DJ |
9933 | putpkt (rs->buf); |
9934 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9935 | |
6d820c5c | 9936 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9937 | } |
9938 | ||
73971819 | 9939 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt, reason); |
c906108c SS |
9940 | } |
9941 | ||
f486487f | 9942 | static enum Z_packet_type |
d471ea57 AC |
9943 | watchpoint_to_Z_packet (int type) |
9944 | { | |
9945 | switch (type) | |
9946 | { | |
9947 | case hw_write: | |
bb858e6a | 9948 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9949 | break; |
9950 | case hw_read: | |
bb858e6a | 9951 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9952 | break; |
9953 | case hw_access: | |
bb858e6a | 9954 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9955 | break; |
9956 | default: | |
8e65ff28 | 9957 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9958 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9959 | } |
9960 | } | |
9961 | ||
3c3bea1c | 9962 | static int |
f486487f SM |
9963 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9964 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9965 | { |
d01949b6 | 9966 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9967 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9968 | char *p; |
d471ea57 | 9969 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9970 | |
4082afcc | 9971 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9972 | return 1; |
802188a7 | 9973 | |
28439a30 PA |
9974 | /* Make sure the remote is pointing at the right process, if |
9975 | necessary. */ | |
9976 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9977 | set_general_process (); | |
9978 | ||
bba74b36 | 9979 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9980 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9981 | addr = remote_address_masked (addr); |
9982 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9983 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9984 | |
6d820c5c DJ |
9985 | putpkt (rs->buf); |
9986 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9987 | |
6d820c5c | 9988 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9989 | { |
9990 | case PACKET_ERROR: | |
d471ea57 | 9991 | return -1; |
85d721b8 PA |
9992 | case PACKET_UNKNOWN: |
9993 | return 1; | |
d471ea57 AC |
9994 | case PACKET_OK: |
9995 | return 0; | |
9996 | } | |
8e65ff28 | 9997 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9998 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9999 | } |
10000 | ||
283002cf MR |
10001 | static int |
10002 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
10003 | CORE_ADDR start, int length) | |
10004 | { | |
10005 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10006 | ||
10007 | return diff < length; | |
10008 | } | |
10009 | ||
d471ea57 | 10010 | |
3c3bea1c | 10011 | static int |
f486487f SM |
10012 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
10013 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10014 | { |
d01949b6 | 10015 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 10016 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 10017 | char *p; |
d471ea57 AC |
10018 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10019 | ||
4082afcc | 10020 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10021 | return -1; |
802188a7 | 10022 | |
28439a30 PA |
10023 | /* Make sure the remote is pointing at the right process, if |
10024 | necessary. */ | |
10025 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10026 | set_general_process (); | |
10027 | ||
bba74b36 | 10028 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 10029 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
10030 | addr = remote_address_masked (addr); |
10031 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10032 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
10033 | putpkt (rs->buf); |
10034 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10035 | |
6d820c5c | 10036 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10037 | { |
10038 | case PACKET_ERROR: | |
10039 | case PACKET_UNKNOWN: | |
10040 | return -1; | |
10041 | case PACKET_OK: | |
10042 | return 0; | |
10043 | } | |
8e65ff28 | 10044 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10045 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10046 | } |
10047 | ||
3c3bea1c | 10048 | |
501eef12 | 10049 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 10050 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 10051 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 10052 | |
480a3f21 | 10053 | static int |
31568a15 TT |
10054 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
10055 | CORE_ADDR addr, int len) | |
480a3f21 PW |
10056 | { |
10057 | if (remote_hw_watchpoint_length_limit == 0) | |
10058 | return 0; | |
10059 | else if (remote_hw_watchpoint_length_limit < 0) | |
10060 | return 1; | |
10061 | else if (len <= remote_hw_watchpoint_length_limit) | |
10062 | return 1; | |
10063 | else | |
10064 | return 0; | |
10065 | } | |
10066 | ||
b9362cc7 | 10067 | static int |
5461485a | 10068 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 10069 | enum bptype type, int cnt, int ot) |
96baa820 | 10070 | { |
3c3bea1c GS |
10071 | if (type == bp_hardware_breakpoint) |
10072 | { | |
10073 | if (remote_hw_breakpoint_limit == 0) | |
10074 | return 0; | |
501eef12 AC |
10075 | else if (remote_hw_breakpoint_limit < 0) |
10076 | return 1; | |
3c3bea1c GS |
10077 | else if (cnt <= remote_hw_breakpoint_limit) |
10078 | return 1; | |
10079 | } | |
10080 | else | |
10081 | { | |
10082 | if (remote_hw_watchpoint_limit == 0) | |
10083 | return 0; | |
501eef12 AC |
10084 | else if (remote_hw_watchpoint_limit < 0) |
10085 | return 1; | |
3c3bea1c GS |
10086 | else if (ot) |
10087 | return -1; | |
10088 | else if (cnt <= remote_hw_watchpoint_limit) | |
10089 | return 1; | |
10090 | } | |
10091 | return -1; | |
10092 | } | |
10093 | ||
f7e6eed5 PA |
10094 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10095 | ||
10096 | static int | |
10097 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10098 | { | |
799a2abe | 10099 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10100 | |
799a2abe PA |
10101 | return (thread->priv != NULL |
10102 | && thread->priv->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT); | |
f7e6eed5 PA |
10103 | } |
10104 | ||
10105 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10106 | remote. */ | |
10107 | ||
10108 | static int | |
10109 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10110 | { | |
f7e6eed5 PA |
10111 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10112 | } | |
10113 | ||
10114 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10115 | ||
10116 | static int | |
10117 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10118 | { | |
799a2abe | 10119 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10120 | |
799a2abe PA |
10121 | return (thread->priv != NULL |
10122 | && thread->priv->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT); | |
f7e6eed5 PA |
10123 | } |
10124 | ||
10125 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10126 | remote. */ | |
10127 | ||
10128 | static int | |
10129 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10130 | { | |
f7e6eed5 PA |
10131 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10132 | } | |
10133 | ||
b9362cc7 | 10134 | static int |
6a109b6b | 10135 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 10136 | { |
799a2abe | 10137 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10138 | |
799a2abe PA |
10139 | return (thread->priv != NULL |
10140 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT); | |
3c3bea1c GS |
10141 | } |
10142 | ||
4aa7a7f5 JJ |
10143 | static int |
10144 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 10145 | { |
799a2abe | 10146 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10147 | |
799a2abe PA |
10148 | if (thread->priv != NULL |
10149 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT) | |
4aa7a7f5 | 10150 | { |
799a2abe PA |
10151 | *addr_p = thread->priv->watch_data_address; |
10152 | return 1; | |
4aa7a7f5 JJ |
10153 | } |
10154 | ||
799a2abe | 10155 | return 0; |
3c3bea1c GS |
10156 | } |
10157 | ||
10158 | ||
10159 | static int | |
23a26771 | 10160 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10161 | struct bp_target_info *bp_tgt) |
3c3bea1c | 10162 | { |
0d5ed153 | 10163 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10164 | struct remote_state *rs; |
bba74b36 | 10165 | char *p, *endbuf; |
dd61ec5c | 10166 | char *message; |
3c3bea1c | 10167 | |
4082afcc | 10168 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10169 | return -1; |
2bc416ba | 10170 | |
28439a30 PA |
10171 | /* Make sure the remote is pointing at the right process, if |
10172 | necessary. */ | |
10173 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10174 | set_general_process (); | |
10175 | ||
4fff2411 JZ |
10176 | rs = get_remote_state (); |
10177 | p = rs->buf; | |
bba74b36 | 10178 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10179 | |
96baa820 JM |
10180 | *(p++) = 'Z'; |
10181 | *(p++) = '1'; | |
10182 | *(p++) = ','; | |
802188a7 | 10183 | |
0d5ed153 | 10184 | addr = remote_address_masked (addr); |
96baa820 | 10185 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10186 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10187 | |
efcc2da7 | 10188 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 10189 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10190 | |
78eff0ec | 10191 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
10192 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10193 | ||
6d820c5c DJ |
10194 | putpkt (rs->buf); |
10195 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10196 | |
6d820c5c | 10197 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10198 | { |
10199 | case PACKET_ERROR: | |
dd61ec5c MW |
10200 | if (rs->buf[1] == '.') |
10201 | { | |
10202 | message = strchr (rs->buf + 2, '.'); | |
10203 | if (message) | |
0316657e | 10204 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10205 | } |
10206 | return -1; | |
d471ea57 AC |
10207 | case PACKET_UNKNOWN: |
10208 | return -1; | |
10209 | case PACKET_OK: | |
10210 | return 0; | |
10211 | } | |
8e65ff28 | 10212 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10213 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10214 | } |
10215 | ||
d471ea57 | 10216 | |
802188a7 | 10217 | static int |
a64dc96c | 10218 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10219 | struct bp_target_info *bp_tgt) |
96baa820 | 10220 | { |
8181d85f | 10221 | CORE_ADDR addr; |
d01949b6 | 10222 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10223 | char *p = rs->buf; |
bba74b36 | 10224 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10225 | |
4082afcc | 10226 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10227 | return -1; |
802188a7 | 10228 | |
28439a30 PA |
10229 | /* Make sure the remote is pointing at the right process, if |
10230 | necessary. */ | |
10231 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10232 | set_general_process (); | |
10233 | ||
96baa820 JM |
10234 | *(p++) = 'z'; |
10235 | *(p++) = '1'; | |
10236 | *(p++) = ','; | |
802188a7 | 10237 | |
8181d85f | 10238 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10239 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10240 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10241 | |
6d820c5c DJ |
10242 | putpkt (rs->buf); |
10243 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10244 | |
6d820c5c | 10245 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10246 | { |
10247 | case PACKET_ERROR: | |
10248 | case PACKET_UNKNOWN: | |
10249 | return -1; | |
10250 | case PACKET_OK: | |
10251 | return 0; | |
10252 | } | |
8e65ff28 | 10253 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10254 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10255 | } |
96baa820 | 10256 | |
4a5e7a5b PA |
10257 | /* Verify memory using the "qCRC:" request. */ |
10258 | ||
10259 | static int | |
10260 | remote_verify_memory (struct target_ops *ops, | |
10261 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
10262 | { | |
10263 | struct remote_state *rs = get_remote_state (); | |
10264 | unsigned long host_crc, target_crc; | |
10265 | char *tmp; | |
10266 | ||
936d2992 PA |
10267 | /* It doesn't make sense to use qCRC if the remote target is |
10268 | connected but not running. */ | |
10269 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10270 | { | |
10271 | enum packet_result result; | |
28439a30 | 10272 | |
936d2992 PA |
10273 | /* Make sure the remote is pointing at the right process. */ |
10274 | set_general_process (); | |
4a5e7a5b | 10275 | |
936d2992 PA |
10276 | /* FIXME: assumes lma can fit into long. */ |
10277 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10278 | (long) lma, (long) size); | |
10279 | putpkt (rs->buf); | |
4a5e7a5b | 10280 | |
936d2992 PA |
10281 | /* Be clever; compute the host_crc before waiting for target |
10282 | reply. */ | |
10283 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10284 | ||
10285 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10286 | |
936d2992 PA |
10287 | result = packet_ok (rs->buf, |
10288 | &remote_protocol_packets[PACKET_qCRC]); | |
10289 | if (result == PACKET_ERROR) | |
10290 | return -1; | |
10291 | else if (result == PACKET_OK) | |
10292 | { | |
10293 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10294 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10295 | |
936d2992 PA |
10296 | return (host_crc == target_crc); |
10297 | } | |
10298 | } | |
4a5e7a5b | 10299 | |
936d2992 | 10300 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
10301 | } |
10302 | ||
c906108c SS |
10303 | /* compare-sections command |
10304 | ||
10305 | With no arguments, compares each loadable section in the exec bfd | |
10306 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10307 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10308 | |
c906108c | 10309 | static void |
ac88e2de | 10310 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10311 | { |
10312 | asection *s; | |
948f8e3d | 10313 | gdb_byte *sectdata; |
ce359b09 | 10314 | const char *sectname; |
c906108c SS |
10315 | bfd_size_type size; |
10316 | bfd_vma lma; | |
10317 | int matched = 0; | |
10318 | int mismatched = 0; | |
4a5e7a5b | 10319 | int res; |
95cf3b38 | 10320 | int read_only = 0; |
c906108c SS |
10321 | |
10322 | if (!exec_bfd) | |
8a3fe4f8 | 10323 | error (_("command cannot be used without an exec file")); |
c906108c | 10324 | |
28439a30 PA |
10325 | /* Make sure the remote is pointing at the right process. */ |
10326 | set_general_process (); | |
10327 | ||
95cf3b38 DT |
10328 | if (args != NULL && strcmp (args, "-r") == 0) |
10329 | { | |
10330 | read_only = 1; | |
10331 | args = NULL; | |
10332 | } | |
10333 | ||
c5aa993b | 10334 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10335 | { |
10336 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10337 | continue; /* Skip non-loadable section. */ |
c906108c | 10338 | |
95cf3b38 DT |
10339 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10340 | continue; /* Skip writeable sections */ | |
10341 | ||
2c500098 | 10342 | size = bfd_get_section_size (s); |
c906108c | 10343 | if (size == 0) |
0df8b418 | 10344 | continue; /* Skip zero-length section. */ |
c906108c | 10345 | |
ce359b09 | 10346 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10347 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10348 | continue; /* Not the section selected by user. */ |
c906108c | 10349 | |
0df8b418 | 10350 | matched = 1; /* Do this section. */ |
c906108c | 10351 | lma = s->lma; |
c906108c | 10352 | |
b80406ac TT |
10353 | gdb::byte_vector sectdata (size); |
10354 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10355 | |
b80406ac | 10356 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10357 | |
10358 | if (res == -1) | |
5af949e3 | 10359 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10360 | paddress (target_gdbarch (), lma), |
10361 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10362 | |
5af949e3 | 10363 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10364 | paddress (target_gdbarch (), lma), |
10365 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10366 | if (res) |
c906108c SS |
10367 | printf_filtered ("matched.\n"); |
10368 | else | |
c5aa993b JM |
10369 | { |
10370 | printf_filtered ("MIS-MATCHED!\n"); | |
10371 | mismatched++; | |
10372 | } | |
c906108c SS |
10373 | } |
10374 | if (mismatched > 0) | |
936d2992 | 10375 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10376 | the loaded file\n")); |
c906108c | 10377 | if (args && !matched) |
a3f17187 | 10378 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10379 | } |
10380 | ||
0e7f50da UW |
10381 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10382 | into remote target. The number of bytes written to the remote | |
10383 | target is returned, or -1 for error. */ | |
10384 | ||
9b409511 | 10385 | static enum target_xfer_status |
0e7f50da UW |
10386 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
10387 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 10388 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10389 | struct packet_config *packet) |
10390 | { | |
10391 | int i, buf_len; | |
10392 | ULONGEST n; | |
0e7f50da UW |
10393 | struct remote_state *rs = get_remote_state (); |
10394 | int max_size = get_memory_write_packet_size (); | |
10395 | ||
10396 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 10397 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10398 | |
10399 | /* Insert header. */ | |
10400 | i = snprintf (rs->buf, max_size, | |
10401 | "qXfer:%s:write:%s:%s:", | |
10402 | object_name, annex ? annex : "", | |
10403 | phex_nz (offset, sizeof offset)); | |
10404 | max_size -= (i + 1); | |
10405 | ||
10406 | /* Escape as much data as fits into rs->buf. */ | |
10407 | buf_len = remote_escape_output | |
124e13d9 | 10408 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10409 | |
10410 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10411 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10412 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10413 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10414 | |
10415 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10416 | |
10417 | *xfered_len = n; | |
10418 | return TARGET_XFER_OK; | |
0e7f50da UW |
10419 | } |
10420 | ||
0876f84a DJ |
10421 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10422 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10423 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10424 | The number of bytes read may be less than LEN without indicating an | |
10425 | EOF. PACKET is checked and updated to indicate whether the remote | |
10426 | target supports this object. */ | |
10427 | ||
9b409511 | 10428 | static enum target_xfer_status |
0876f84a DJ |
10429 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
10430 | const char *annex, | |
10431 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10432 | ULONGEST *xfered_len, |
0876f84a DJ |
10433 | struct packet_config *packet) |
10434 | { | |
0876f84a | 10435 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10436 | LONGEST i, n, packet_len; |
10437 | ||
10438 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 10439 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10440 | |
10441 | /* Check whether we've cached an end-of-object packet that matches | |
10442 | this request. */ | |
8e88304f | 10443 | if (rs->finished_object) |
0876f84a | 10444 | { |
8e88304f TT |
10445 | if (strcmp (object_name, rs->finished_object) == 0 |
10446 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10447 | && offset == rs->finished_offset) | |
9b409511 YQ |
10448 | return TARGET_XFER_EOF; |
10449 | ||
0876f84a DJ |
10450 | |
10451 | /* Otherwise, we're now reading something different. Discard | |
10452 | the cache. */ | |
8e88304f TT |
10453 | xfree (rs->finished_object); |
10454 | xfree (rs->finished_annex); | |
10455 | rs->finished_object = NULL; | |
10456 | rs->finished_annex = NULL; | |
0876f84a DJ |
10457 | } |
10458 | ||
10459 | /* Request only enough to fit in a single packet. The actual data | |
10460 | may not, since we don't know how much of it will need to be escaped; | |
10461 | the target is free to respond with slightly less data. We subtract | |
10462 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10463 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10464 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10465 | object_name, annex ? annex : "", | |
10466 | phex_nz (offset, sizeof offset), | |
10467 | phex_nz (n, sizeof n)); | |
10468 | i = putpkt (rs->buf); | |
10469 | if (i < 0) | |
2ed4b548 | 10470 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10471 | |
10472 | rs->buf[0] = '\0'; | |
10473 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10474 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10475 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10476 | |
10477 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10478 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10479 | ||
10480 | /* 'm' means there is (or at least might be) more data after this | |
10481 | batch. That does not make sense unless there's at least one byte | |
10482 | of data in this reply. */ | |
10483 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10484 | error (_("Remote qXfer reply contained no data.")); | |
10485 | ||
10486 | /* Got some data. */ | |
bc20a4af PA |
10487 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10488 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10489 | |
10490 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10491 | or possibly empty. If we have the final block of a non-empty |
10492 | object, record this fact to bypass a subsequent partial read. */ | |
10493 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10494 | { |
8e88304f TT |
10495 | rs->finished_object = xstrdup (object_name); |
10496 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10497 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10498 | } |
10499 | ||
9b409511 YQ |
10500 | if (i == 0) |
10501 | return TARGET_XFER_EOF; | |
10502 | else | |
10503 | { | |
10504 | *xfered_len = i; | |
10505 | return TARGET_XFER_OK; | |
10506 | } | |
0876f84a DJ |
10507 | } |
10508 | ||
9b409511 | 10509 | static enum target_xfer_status |
4b8a223f | 10510 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 10511 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
10512 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
10513 | ULONGEST *xfered_len) | |
c906108c | 10514 | { |
82f73884 | 10515 | struct remote_state *rs; |
c906108c | 10516 | int i; |
6d820c5c | 10517 | char *p2; |
1e3ff5ad | 10518 | char query_type; |
124e13d9 | 10519 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10520 | |
e6e4e701 | 10521 | set_remote_traceframe (); |
82f73884 PA |
10522 | set_general_thread (inferior_ptid); |
10523 | ||
10524 | rs = get_remote_state (); | |
10525 | ||
b2182ed2 | 10526 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10527 | if (object == TARGET_OBJECT_MEMORY) |
10528 | { | |
2d717e4f DJ |
10529 | /* If the remote target is connected but not running, we should |
10530 | pass this request down to a lower stratum (e.g. the executable | |
10531 | file). */ | |
10532 | if (!target_has_execution) | |
9b409511 | 10533 | return TARGET_XFER_EOF; |
2d717e4f | 10534 | |
21e3b9b9 | 10535 | if (writebuf != NULL) |
124e13d9 SM |
10536 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10537 | xfered_len); | |
21e3b9b9 | 10538 | else |
124e13d9 SM |
10539 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
10540 | xfered_len); | |
21e3b9b9 DJ |
10541 | } |
10542 | ||
0df8b418 | 10543 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10544 | if (object == TARGET_OBJECT_SPU) |
10545 | { | |
10546 | if (readbuf) | |
10547 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
10548 | xfered_len, &remote_protocol_packets |
10549 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
10550 | else |
10551 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
10552 | xfered_len, &remote_protocol_packets |
10553 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10554 | } |
10555 | ||
4aa995e1 PA |
10556 | /* Handle extra signal info using qxfer packets. */ |
10557 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10558 | { | |
10559 | if (readbuf) | |
10560 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10561 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10562 | [PACKET_qXfer_siginfo_read]); |
10563 | else | |
3e43a32a | 10564 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10565 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10566 | &remote_protocol_packets |
10567 | [PACKET_qXfer_siginfo_write]); | |
10568 | } | |
10569 | ||
0fb4aa4b PA |
10570 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10571 | { | |
10572 | if (readbuf) | |
3e43a32a | 10573 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10574 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10575 | &remote_protocol_packets |
10576 | [PACKET_qXfer_statictrace_read]); | |
10577 | else | |
2ed4b548 | 10578 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10579 | } |
10580 | ||
a76d924d DJ |
10581 | /* Only handle flash writes. */ |
10582 | if (writebuf != NULL) | |
10583 | { | |
a76d924d DJ |
10584 | switch (object) |
10585 | { | |
10586 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10587 | return remote_flash_write (ops, offset, len, xfered_len, |
10588 | writebuf); | |
a76d924d DJ |
10589 | |
10590 | default: | |
2ed4b548 | 10591 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10592 | } |
10593 | } | |
4b8a223f | 10594 | |
1e3ff5ad AC |
10595 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10596 | objects!!! Instead specify new query packets. */ | |
10597 | switch (object) | |
c906108c | 10598 | { |
1e3ff5ad AC |
10599 | case TARGET_OBJECT_AVR: |
10600 | query_type = 'R'; | |
10601 | break; | |
802188a7 RM |
10602 | |
10603 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10604 | gdb_assert (annex == NULL); |
10605 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10606 | xfered_len, |
0876f84a | 10607 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10608 | |
23181151 DJ |
10609 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10610 | return remote_read_qxfer | |
9b409511 | 10611 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10612 | &remote_protocol_packets[PACKET_qXfer_features]); |
10613 | ||
cfa9d6d9 DJ |
10614 | case TARGET_OBJECT_LIBRARIES: |
10615 | return remote_read_qxfer | |
9b409511 | 10616 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10617 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10618 | ||
2268b414 JK |
10619 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10620 | return remote_read_qxfer | |
9b409511 | 10621 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10622 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10623 | ||
fd79ecee DJ |
10624 | case TARGET_OBJECT_MEMORY_MAP: |
10625 | gdb_assert (annex == NULL); | |
10626 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10627 | xfered_len, |
fd79ecee DJ |
10628 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10629 | ||
07e059b5 VP |
10630 | case TARGET_OBJECT_OSDATA: |
10631 | /* Should only get here if we're connected. */ | |
5d93a237 | 10632 | gdb_assert (rs->remote_desc); |
07e059b5 | 10633 | return remote_read_qxfer |
9b409511 | 10634 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10635 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10636 | ||
dc146f7c VP |
10637 | case TARGET_OBJECT_THREADS: |
10638 | gdb_assert (annex == NULL); | |
10639 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10640 | xfered_len, |
dc146f7c VP |
10641 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10642 | ||
b3b9301e PA |
10643 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10644 | gdb_assert (annex == NULL); | |
10645 | return remote_read_qxfer | |
9b409511 | 10646 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10647 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10648 | |
10649 | case TARGET_OBJECT_FDPIC: | |
10650 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10651 | xfered_len, |
78d85199 | 10652 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10653 | |
10654 | case TARGET_OBJECT_OPENVMS_UIB: | |
10655 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10656 | xfered_len, |
169081d0 TG |
10657 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10658 | ||
9accd112 MM |
10659 | case TARGET_OBJECT_BTRACE: |
10660 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10661 | xfered_len, |
9accd112 MM |
10662 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10663 | ||
f4abbc16 MM |
10664 | case TARGET_OBJECT_BTRACE_CONF: |
10665 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10666 | len, xfered_len, | |
10667 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10668 | ||
c78fa86a GB |
10669 | case TARGET_OBJECT_EXEC_FILE: |
10670 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10671 | len, xfered_len, | |
10672 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10673 | ||
1e3ff5ad | 10674 | default: |
2ed4b548 | 10675 | return TARGET_XFER_E_IO; |
c906108c SS |
10676 | } |
10677 | ||
0df8b418 | 10678 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10679 | large enough let the caller deal with it. */ |
ea9c271d | 10680 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10681 | return TARGET_XFER_E_IO; |
ea9c271d | 10682 | len = get_remote_packet_size (); |
1e3ff5ad | 10683 | |
23860348 | 10684 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10685 | if (!rs->remote_desc) |
8a3fe4f8 | 10686 | error (_("remote query is only available after target open")); |
c906108c | 10687 | |
1e3ff5ad | 10688 | gdb_assert (annex != NULL); |
4b8a223f | 10689 | gdb_assert (readbuf != NULL); |
c906108c | 10690 | |
6d820c5c | 10691 | p2 = rs->buf; |
c906108c SS |
10692 | *p2++ = 'q'; |
10693 | *p2++ = query_type; | |
10694 | ||
23860348 MS |
10695 | /* We used one buffer char for the remote protocol q command and |
10696 | another for the query type. As the remote protocol encapsulation | |
10697 | uses 4 chars plus one extra in case we are debugging | |
10698 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10699 | string. */ | |
c906108c | 10700 | i = 0; |
ea9c271d | 10701 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10702 | { |
1e3ff5ad AC |
10703 | /* Bad caller may have sent forbidden characters. */ |
10704 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10705 | *p2++ = annex[i]; | |
c906108c SS |
10706 | i++; |
10707 | } | |
1e3ff5ad AC |
10708 | *p2 = '\0'; |
10709 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10710 | |
6d820c5c | 10711 | i = putpkt (rs->buf); |
c5aa993b | 10712 | if (i < 0) |
2ed4b548 | 10713 | return TARGET_XFER_E_IO; |
c906108c | 10714 | |
6d820c5c DJ |
10715 | getpkt (&rs->buf, &rs->buf_size, 0); |
10716 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10717 | |
9b409511 YQ |
10718 | *xfered_len = strlen ((char *) readbuf); |
10719 | return TARGET_XFER_OK; | |
c906108c SS |
10720 | } |
10721 | ||
09c98b44 DB |
10722 | /* Implementation of to_get_memory_xfer_limit. */ |
10723 | ||
10724 | static ULONGEST | |
10725 | remote_get_memory_xfer_limit (struct target_ops *ops) | |
10726 | { | |
10727 | return get_memory_write_packet_size (); | |
10728 | } | |
10729 | ||
08388c79 DE |
10730 | static int |
10731 | remote_search_memory (struct target_ops* ops, | |
10732 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10733 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10734 | CORE_ADDR *found_addrp) | |
10735 | { | |
f5656ead | 10736 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10737 | struct remote_state *rs = get_remote_state (); |
10738 | int max_size = get_memory_write_packet_size (); | |
10739 | struct packet_config *packet = | |
10740 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10741 | /* Number of packet bytes used to encode the pattern; |
10742 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10743 | int escaped_pattern_len; |
0df8b418 | 10744 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10745 | int used_pattern_len; |
10746 | int i; | |
10747 | int found; | |
10748 | ULONGEST found_addr; | |
10749 | ||
10750 | /* Don't go to the target if we don't have to. | |
10751 | This is done before checking packet->support to avoid the possibility that | |
10752 | a success for this edge case means the facility works in general. */ | |
10753 | if (pattern_len > search_space_len) | |
10754 | return 0; | |
10755 | if (pattern_len == 0) | |
10756 | { | |
10757 | *found_addrp = start_addr; | |
10758 | return 1; | |
10759 | } | |
10760 | ||
10761 | /* If we already know the packet isn't supported, fall back to the simple | |
10762 | way of searching memory. */ | |
10763 | ||
4082afcc | 10764 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10765 | { |
10766 | /* Target doesn't provided special support, fall back and use the | |
10767 | standard support (copy memory and do the search here). */ | |
10768 | return simple_search_memory (ops, start_addr, search_space_len, | |
10769 | pattern, pattern_len, found_addrp); | |
10770 | } | |
10771 | ||
28439a30 PA |
10772 | /* Make sure the remote is pointing at the right process. */ |
10773 | set_general_process (); | |
10774 | ||
08388c79 DE |
10775 | /* Insert header. */ |
10776 | i = snprintf (rs->buf, max_size, | |
10777 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10778 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10779 | phex_nz (search_space_len, sizeof (search_space_len))); |
10780 | max_size -= (i + 1); | |
10781 | ||
10782 | /* Escape as much data as fits into rs->buf. */ | |
10783 | escaped_pattern_len = | |
124e13d9 | 10784 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10785 | &used_pattern_len, max_size); |
10786 | ||
10787 | /* Bail if the pattern is too large. */ | |
10788 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10789 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10790 | |
10791 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10792 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10793 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10794 | { | |
10795 | /* The request may not have worked because the command is not | |
10796 | supported. If so, fall back to the simple way. */ | |
10797 | if (packet->support == PACKET_DISABLE) | |
10798 | { | |
10799 | return simple_search_memory (ops, start_addr, search_space_len, | |
10800 | pattern, pattern_len, found_addrp); | |
10801 | } | |
10802 | return -1; | |
10803 | } | |
10804 | ||
10805 | if (rs->buf[0] == '0') | |
10806 | found = 0; | |
10807 | else if (rs->buf[0] == '1') | |
10808 | { | |
10809 | found = 1; | |
10810 | if (rs->buf[1] != ',') | |
10e0fa18 | 10811 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10812 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10813 | *found_addrp = found_addr; | |
10814 | } | |
10815 | else | |
10e0fa18 | 10816 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10817 | |
10818 | return found; | |
10819 | } | |
10820 | ||
96baa820 | 10821 | static void |
a30bf1f1 | 10822 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10823 | struct ui_file *outbuf) |
96baa820 | 10824 | { |
d01949b6 | 10825 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10826 | char *p = rs->buf; |
96baa820 | 10827 | |
5d93a237 | 10828 | if (!rs->remote_desc) |
8a3fe4f8 | 10829 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10830 | |
23860348 | 10831 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10832 | if (command == NULL) |
10833 | command = ""; | |
10834 | ||
23860348 | 10835 | /* The query prefix. */ |
2e9f7625 DJ |
10836 | strcpy (rs->buf, "qRcmd,"); |
10837 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10838 | |
3e43a32a MS |
10839 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10840 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10841 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10842 | |
23860348 | 10843 | /* Encode the actual command. */ |
a30bf1f1 | 10844 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10845 | |
6d820c5c | 10846 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10847 | error (_("Communication problem with target.")); |
96baa820 JM |
10848 | |
10849 | /* get/display the response */ | |
10850 | while (1) | |
10851 | { | |
2e9f7625 DJ |
10852 | char *buf; |
10853 | ||
00bf0b85 | 10854 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10855 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10856 | rs->buf[0] = '\0'; |
5b37825d PW |
10857 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10858 | { | |
10859 | /* Timeout. Continue to (try to) read responses. | |
10860 | This is better than stopping with an error, assuming the stub | |
10861 | is still executing the (long) monitor command. | |
10862 | If needed, the user can interrupt gdb using C-c, obtaining | |
10863 | an effect similar to stop on timeout. */ | |
10864 | continue; | |
10865 | } | |
2e9f7625 | 10866 | buf = rs->buf; |
96baa820 | 10867 | if (buf[0] == '\0') |
8a3fe4f8 | 10868 | error (_("Target does not support this command.")); |
96baa820 JM |
10869 | if (buf[0] == 'O' && buf[1] != 'K') |
10870 | { | |
23860348 | 10871 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10872 | continue; |
10873 | } | |
10874 | if (strcmp (buf, "OK") == 0) | |
10875 | break; | |
7be570e7 JM |
10876 | if (strlen (buf) == 3 && buf[0] == 'E' |
10877 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10878 | { | |
8a3fe4f8 | 10879 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10880 | } |
96baa820 JM |
10881 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10882 | { | |
10883 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10884 | |
96baa820 JM |
10885 | fputc_unfiltered (c, outbuf); |
10886 | } | |
10887 | break; | |
10888 | } | |
10889 | } | |
10890 | ||
a664f67e | 10891 | static std::vector<mem_region> |
fd79ecee DJ |
10892 | remote_memory_map (struct target_ops *ops) |
10893 | { | |
a664f67e | 10894 | std::vector<mem_region> result; |
b7b030ad TT |
10895 | gdb::unique_xmalloc_ptr<char> text |
10896 | = target_read_stralloc (¤t_target, TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
10897 | |
10898 | if (text) | |
b7b030ad | 10899 | result = parse_memory_map (text.get ()); |
fd79ecee DJ |
10900 | |
10901 | return result; | |
10902 | } | |
10903 | ||
c906108c | 10904 | static void |
ac88e2de | 10905 | packet_command (const char *args, int from_tty) |
c906108c | 10906 | { |
d01949b6 | 10907 | struct remote_state *rs = get_remote_state (); |
c906108c | 10908 | |
5d93a237 | 10909 | if (!rs->remote_desc) |
8a3fe4f8 | 10910 | error (_("command can only be used with remote target")); |
c906108c | 10911 | |
c5aa993b | 10912 | if (!args) |
8a3fe4f8 | 10913 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10914 | |
10915 | puts_filtered ("sending: "); | |
10916 | print_packet (args); | |
10917 | puts_filtered ("\n"); | |
10918 | putpkt (args); | |
10919 | ||
6d820c5c | 10920 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10921 | puts_filtered ("received: "); |
6d820c5c | 10922 | print_packet (rs->buf); |
c906108c SS |
10923 | puts_filtered ("\n"); |
10924 | } | |
10925 | ||
10926 | #if 0 | |
23860348 | 10927 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10928 | |
a14ed312 | 10929 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10930 | |
a14ed312 | 10931 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10932 | |
a14ed312 | 10933 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10934 | |
a14ed312 | 10935 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10936 | |
23860348 | 10937 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10938 | |
a14ed312 | 10939 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10940 | |
23860348 | 10941 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10942 | |
a14ed312 | 10943 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10944 | |
a14ed312 | 10945 | static void init_remote_threadtests (void); |
c906108c | 10946 | |
23860348 | 10947 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10948 | |
10949 | static void | |
fba45db2 | 10950 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10951 | { |
10952 | int sample_thread = SAMPLE_THREAD; | |
10953 | ||
a3f17187 | 10954 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10955 | set_general_thread (sample_thread); |
c906108c SS |
10956 | } |
10957 | ||
10958 | ||
10959 | static void | |
fba45db2 | 10960 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10961 | { |
10962 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10963 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10964 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10965 | |
79d7f229 | 10966 | if (remote_thread_alive (ptid)) |
c906108c SS |
10967 | printf_filtered ("PASS: Thread alive test\n"); |
10968 | else | |
10969 | printf_filtered ("FAIL: Thread alive test\n"); | |
10970 | } | |
10971 | ||
23860348 | 10972 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10973 | |
10974 | void | |
fba45db2 | 10975 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10976 | { |
10977 | char hexid[20]; | |
10978 | ||
23860348 | 10979 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10980 | hexid[16] = 0; |
10981 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10982 | } | |
10983 | ||
10984 | static void | |
fba45db2 | 10985 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10986 | { |
10987 | int startflag = 1; | |
10988 | threadref nextthread; | |
10989 | int done, result_count; | |
10990 | threadref threadlist[3]; | |
10991 | ||
10992 | printf_filtered ("Remote Threadlist test\n"); | |
10993 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10994 | &result_count, &threadlist[0])) | |
10995 | printf_filtered ("FAIL: threadlist test\n"); | |
10996 | else | |
10997 | { | |
10998 | threadref *scan = threadlist; | |
10999 | threadref *limit = scan + result_count; | |
11000 | ||
11001 | while (scan < limit) | |
11002 | output_threadid (" thread ", scan++); | |
11003 | } | |
11004 | } | |
11005 | ||
11006 | void | |
fba45db2 | 11007 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11008 | { |
11009 | output_threadid ("Threadid: ", &info->threadid); | |
11010 | printf_filtered ("Name: %s\n ", info->shortname); | |
11011 | printf_filtered ("State: %s\n", info->display); | |
11012 | printf_filtered ("other: %s\n\n", info->more_display); | |
11013 | } | |
11014 | ||
11015 | int | |
fba45db2 | 11016 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11017 | { |
11018 | int result; | |
11019 | int set; | |
11020 | struct gdb_ext_thread_info threadinfo; | |
11021 | ||
11022 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11023 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11024 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11025 | display_thread_info (&threadinfo); | |
11026 | return result; | |
11027 | } | |
11028 | ||
11029 | static void | |
fba45db2 | 11030 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
11031 | { |
11032 | int athread = SAMPLE_THREAD; | |
11033 | threadref thread; | |
11034 | int set; | |
11035 | ||
11036 | int_to_threadref (&thread, athread); | |
11037 | printf_filtered ("Remote Threadinfo test\n"); | |
11038 | if (!get_and_display_threadinfo (&thread)) | |
11039 | printf_filtered ("FAIL cannot get thread info\n"); | |
11040 | } | |
11041 | ||
11042 | static int | |
fba45db2 | 11043 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11044 | { |
11045 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11046 | return get_and_display_threadinfo (ref); | |
11047 | } | |
11048 | ||
11049 | static void | |
fba45db2 | 11050 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
11051 | { |
11052 | printf_filtered ("Remote Threadlist update test\n"); | |
11053 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11054 | } | |
11055 | ||
11056 | static void | |
11057 | init_remote_threadtests (void) | |
11058 | { | |
3e43a32a MS |
11059 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11060 | _("Fetch and print the remote list of " | |
11061 | "thread identifiers, one pkt only")); | |
c906108c | 11062 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 11063 | _("Fetch and display info about one thread")); |
c906108c | 11064 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 11065 | _("Test setting to a different thread")); |
c906108c | 11066 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 11067 | _("Iterate through updating all remote thread info")); |
c906108c | 11068 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 11069 | _(" Remote thread alive test ")); |
c906108c SS |
11070 | } |
11071 | ||
11072 | #endif /* 0 */ | |
11073 | ||
f3fb8c85 MS |
11074 | /* Convert a thread ID to a string. Returns the string in a static |
11075 | buffer. */ | |
11076 | ||
7a114964 | 11077 | static const char * |
117de6a9 | 11078 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 11079 | { |
79d7f229 | 11080 | static char buf[64]; |
82f73884 | 11081 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11082 | |
7cee1e54 PA |
11083 | if (ptid_equal (ptid, null_ptid)) |
11084 | return normal_pid_to_str (ptid); | |
11085 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
11086 | { |
11087 | /* Printing an inferior target id. */ | |
11088 | ||
11089 | /* When multi-process extensions are off, there's no way in the | |
11090 | remote protocol to know the remote process id, if there's any | |
11091 | at all. There's one exception --- when we're connected with | |
11092 | target extended-remote, and we manually attached to a process | |
11093 | with "attach PID". We don't record anywhere a flag that | |
11094 | allows us to distinguish that case from the case of | |
11095 | connecting with extended-remote and the stub already being | |
11096 | attached to a process, and reporting yes to qAttached, hence | |
11097 | no smart special casing here. */ | |
11098 | if (!remote_multi_process_p (rs)) | |
11099 | { | |
11100 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11101 | return buf; | |
11102 | } | |
11103 | ||
11104 | return normal_pid_to_str (ptid); | |
82f73884 | 11105 | } |
ecd0ada5 | 11106 | else |
79d7f229 | 11107 | { |
ecd0ada5 PA |
11108 | if (ptid_equal (magic_null_ptid, ptid)) |
11109 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11110 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11111 | if (ptid_get_lwp (ptid) == 0) |
11112 | return normal_pid_to_str (ptid); | |
11113 | else | |
11114 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11115 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11116 | else |
11117 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11118 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11119 | return buf; |
11120 | } | |
f3fb8c85 MS |
11121 | } |
11122 | ||
38691318 KB |
11123 | /* Get the address of the thread local variable in OBJFILE which is |
11124 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11125 | ||
11126 | static CORE_ADDR | |
117de6a9 PA |
11127 | remote_get_thread_local_address (struct target_ops *ops, |
11128 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 11129 | { |
4082afcc | 11130 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11131 | { |
11132 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11133 | char *p = rs->buf; |
82f73884 | 11134 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11135 | enum packet_result result; |
38691318 KB |
11136 | |
11137 | strcpy (p, "qGetTLSAddr:"); | |
11138 | p += strlen (p); | |
82f73884 | 11139 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11140 | *p++ = ','; |
11141 | p += hexnumstr (p, offset); | |
11142 | *p++ = ','; | |
11143 | p += hexnumstr (p, lm); | |
11144 | *p++ = '\0'; | |
11145 | ||
6d820c5c DJ |
11146 | putpkt (rs->buf); |
11147 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11148 | result = packet_ok (rs->buf, |
11149 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11150 | if (result == PACKET_OK) |
38691318 KB |
11151 | { |
11152 | ULONGEST result; | |
11153 | ||
6d820c5c | 11154 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11155 | return result; |
11156 | } | |
571dd617 | 11157 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11158 | throw_error (TLS_GENERIC_ERROR, |
11159 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11160 | else |
109c3e39 AC |
11161 | throw_error (TLS_GENERIC_ERROR, |
11162 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11163 | } |
11164 | else | |
109c3e39 AC |
11165 | throw_error (TLS_GENERIC_ERROR, |
11166 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11167 | /* Not reached. */ |
11168 | return 0; | |
11169 | } | |
11170 | ||
711e434b PM |
11171 | /* Provide thread local base, i.e. Thread Information Block address. |
11172 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11173 | ||
70221824 | 11174 | static int |
bd7ae0f5 | 11175 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11176 | { |
4082afcc | 11177 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11178 | { |
11179 | struct remote_state *rs = get_remote_state (); | |
11180 | char *p = rs->buf; | |
11181 | char *endp = rs->buf + get_remote_packet_size (); | |
11182 | enum packet_result result; | |
11183 | ||
11184 | strcpy (p, "qGetTIBAddr:"); | |
11185 | p += strlen (p); | |
11186 | p = write_ptid (p, endp, ptid); | |
11187 | *p++ = '\0'; | |
11188 | ||
11189 | putpkt (rs->buf); | |
11190 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11191 | result = packet_ok (rs->buf, | |
11192 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11193 | if (result == PACKET_OK) | |
11194 | { | |
11195 | ULONGEST result; | |
11196 | ||
11197 | unpack_varlen_hex (rs->buf, &result); | |
11198 | if (addr) | |
11199 | *addr = (CORE_ADDR) result; | |
11200 | return 1; | |
11201 | } | |
11202 | else if (result == PACKET_UNKNOWN) | |
11203 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11204 | else | |
11205 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11206 | } | |
11207 | else | |
11208 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11209 | /* Not reached. */ | |
11210 | return 0; | |
11211 | } | |
11212 | ||
29709017 DJ |
11213 | /* Support for inferring a target description based on the current |
11214 | architecture and the size of a 'g' packet. While the 'g' packet | |
11215 | can have any size (since optional registers can be left off the | |
11216 | end), some sizes are easily recognizable given knowledge of the | |
11217 | approximate architecture. */ | |
11218 | ||
11219 | struct remote_g_packet_guess | |
11220 | { | |
11221 | int bytes; | |
11222 | const struct target_desc *tdesc; | |
11223 | }; | |
11224 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11225 | DEF_VEC_O(remote_g_packet_guess_s); | |
11226 | ||
11227 | struct remote_g_packet_data | |
11228 | { | |
11229 | VEC(remote_g_packet_guess_s) *guesses; | |
11230 | }; | |
11231 | ||
11232 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11233 | ||
11234 | static void * | |
11235 | remote_g_packet_data_init (struct obstack *obstack) | |
11236 | { | |
11237 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11238 | } | |
11239 | ||
11240 | void | |
11241 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11242 | const struct target_desc *tdesc) | |
11243 | { | |
11244 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11245 | = ((struct remote_g_packet_data *) |
11246 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11247 | struct remote_g_packet_guess new_guess, *guess; |
11248 | int ix; | |
11249 | ||
11250 | gdb_assert (tdesc != NULL); | |
11251 | ||
11252 | for (ix = 0; | |
11253 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11254 | ix++) | |
11255 | if (guess->bytes == bytes) | |
11256 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11257 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11258 | bytes); |
11259 | ||
11260 | new_guess.bytes = bytes; | |
11261 | new_guess.tdesc = tdesc; | |
11262 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11263 | } | |
11264 | ||
d962ef82 DJ |
11265 | /* Return 1 if remote_read_description would do anything on this target |
11266 | and architecture, 0 otherwise. */ | |
11267 | ||
11268 | static int | |
11269 | remote_read_description_p (struct target_ops *target) | |
11270 | { | |
11271 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11272 | = ((struct remote_g_packet_data *) |
11273 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11274 | |
11275 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11276 | return 1; | |
11277 | ||
11278 | return 0; | |
11279 | } | |
11280 | ||
29709017 DJ |
11281 | static const struct target_desc * |
11282 | remote_read_description (struct target_ops *target) | |
11283 | { | |
11284 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11285 | = ((struct remote_g_packet_data *) |
11286 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11287 | |
d962ef82 DJ |
11288 | /* Do not try this during initial connection, when we do not know |
11289 | whether there is a running but stopped thread. */ | |
11290 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 11291 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 11292 | |
29709017 DJ |
11293 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11294 | { | |
11295 | struct remote_g_packet_guess *guess; | |
11296 | int ix; | |
11297 | int bytes = send_g_packet (); | |
11298 | ||
11299 | for (ix = 0; | |
11300 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11301 | ix++) | |
11302 | if (guess->bytes == bytes) | |
11303 | return guess->tdesc; | |
11304 | ||
11305 | /* We discard the g packet. A minor optimization would be to | |
11306 | hold on to it, and fill the register cache once we have selected | |
11307 | an architecture, but it's too tricky to do safely. */ | |
11308 | } | |
11309 | ||
2117c711 | 11310 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
11311 | } |
11312 | ||
a6b151f1 DJ |
11313 | /* Remote file transfer support. This is host-initiated I/O, not |
11314 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11315 | ||
11316 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11317 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11318 | decrease *LEFT. Otherwise raise an error. */ | |
11319 | ||
11320 | static void | |
a121b7c1 | 11321 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11322 | { |
11323 | int len = strlen (string); | |
11324 | ||
11325 | if (len > *left) | |
11326 | error (_("Packet too long for target.")); | |
11327 | ||
11328 | memcpy (*buffer, string, len); | |
11329 | *buffer += len; | |
11330 | *left -= len; | |
11331 | ||
11332 | /* NUL-terminate the buffer as a convenience, if there is | |
11333 | room. */ | |
11334 | if (*left) | |
11335 | **buffer = '\0'; | |
11336 | } | |
11337 | ||
11338 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11339 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11340 | decrease *LEFT. Otherwise raise an error. */ | |
11341 | ||
11342 | static void | |
11343 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11344 | int len) | |
11345 | { | |
11346 | if (2 * len > *left) | |
11347 | error (_("Packet too long for target.")); | |
11348 | ||
11349 | bin2hex (bytes, *buffer, len); | |
11350 | *buffer += 2 * len; | |
11351 | *left -= 2 * len; | |
11352 | ||
11353 | /* NUL-terminate the buffer as a convenience, if there is | |
11354 | room. */ | |
11355 | if (*left) | |
11356 | **buffer = '\0'; | |
11357 | } | |
11358 | ||
11359 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11360 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11361 | decrease *LEFT. Otherwise raise an error. */ | |
11362 | ||
11363 | static void | |
11364 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11365 | { | |
11366 | int len = hexnumlen (value); | |
11367 | ||
11368 | if (len > *left) | |
11369 | error (_("Packet too long for target.")); | |
11370 | ||
11371 | hexnumstr (*buffer, value); | |
11372 | *buffer += len; | |
11373 | *left -= len; | |
11374 | ||
11375 | /* NUL-terminate the buffer as a convenience, if there is | |
11376 | room. */ | |
11377 | if (*left) | |
11378 | **buffer = '\0'; | |
11379 | } | |
11380 | ||
11381 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11382 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11383 | was included, and *ATTACHMENT to point to the start of the annex | |
11384 | if any. The length of the packet isn't needed here; there may | |
11385 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11386 | ||
11387 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11388 | -1 is returned, the other variables may not be initialized. */ | |
11389 | ||
11390 | static int | |
11391 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11392 | int *remote_errno, char **attachment) | |
11393 | { | |
11394 | char *p, *p2; | |
11395 | ||
11396 | *remote_errno = 0; | |
11397 | *attachment = NULL; | |
11398 | ||
11399 | if (buffer[0] != 'F') | |
11400 | return -1; | |
11401 | ||
11402 | errno = 0; | |
11403 | *retcode = strtol (&buffer[1], &p, 16); | |
11404 | if (errno != 0 || p == &buffer[1]) | |
11405 | return -1; | |
11406 | ||
11407 | /* Check for ",errno". */ | |
11408 | if (*p == ',') | |
11409 | { | |
11410 | errno = 0; | |
11411 | *remote_errno = strtol (p + 1, &p2, 16); | |
11412 | if (errno != 0 || p + 1 == p2) | |
11413 | return -1; | |
11414 | p = p2; | |
11415 | } | |
11416 | ||
11417 | /* Check for ";attachment". If there is no attachment, the | |
11418 | packet should end here. */ | |
11419 | if (*p == ';') | |
11420 | { | |
11421 | *attachment = p + 1; | |
11422 | return 0; | |
11423 | } | |
11424 | else if (*p == '\0') | |
11425 | return 0; | |
11426 | else | |
11427 | return -1; | |
11428 | } | |
11429 | ||
11430 | /* Send a prepared I/O packet to the target and read its response. | |
11431 | The prepared packet is in the global RS->BUF before this function | |
11432 | is called, and the answer is there when we return. | |
11433 | ||
11434 | COMMAND_BYTES is the length of the request to send, which may include | |
11435 | binary data. WHICH_PACKET is the packet configuration to check | |
11436 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11437 | is set to the error number and -1 is returned. Otherwise the value | |
11438 | returned by the function is returned. | |
11439 | ||
11440 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11441 | attachment is expected; an error will be reported if there's a | |
11442 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11443 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11444 | attachment's length. */ | |
11445 | ||
11446 | static int | |
11447 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11448 | int *remote_errno, char **attachment, | |
11449 | int *attachment_len) | |
11450 | { | |
11451 | struct remote_state *rs = get_remote_state (); | |
11452 | int ret, bytes_read; | |
11453 | char *attachment_tmp; | |
11454 | ||
5d93a237 | 11455 | if (!rs->remote_desc |
4082afcc | 11456 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11457 | { |
11458 | *remote_errno = FILEIO_ENOSYS; | |
11459 | return -1; | |
11460 | } | |
11461 | ||
11462 | putpkt_binary (rs->buf, command_bytes); | |
11463 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11464 | ||
11465 | /* If it timed out, something is wrong. Don't try to parse the | |
11466 | buffer. */ | |
11467 | if (bytes_read < 0) | |
11468 | { | |
11469 | *remote_errno = FILEIO_EINVAL; | |
11470 | return -1; | |
11471 | } | |
11472 | ||
11473 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11474 | { | |
11475 | case PACKET_ERROR: | |
11476 | *remote_errno = FILEIO_EINVAL; | |
11477 | return -1; | |
11478 | case PACKET_UNKNOWN: | |
11479 | *remote_errno = FILEIO_ENOSYS; | |
11480 | return -1; | |
11481 | case PACKET_OK: | |
11482 | break; | |
11483 | } | |
11484 | ||
11485 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11486 | &attachment_tmp)) | |
11487 | { | |
11488 | *remote_errno = FILEIO_EINVAL; | |
11489 | return -1; | |
11490 | } | |
11491 | ||
11492 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11493 | if ((attachment_tmp == NULL && attachment != NULL) | |
11494 | || (attachment_tmp != NULL && attachment == NULL)) | |
11495 | { | |
11496 | *remote_errno = FILEIO_EINVAL; | |
11497 | return -1; | |
11498 | } | |
11499 | ||
11500 | /* If an attachment was found, it must point into the packet buffer; | |
11501 | work out how many bytes there were. */ | |
11502 | if (attachment_tmp != NULL) | |
11503 | { | |
11504 | *attachment = attachment_tmp; | |
11505 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11506 | } | |
11507 | ||
11508 | return ret; | |
11509 | } | |
11510 | ||
80152258 PA |
11511 | /* Invalidate the readahead cache. */ |
11512 | ||
11513 | static void | |
11514 | readahead_cache_invalidate (void) | |
11515 | { | |
11516 | struct remote_state *rs = get_remote_state (); | |
11517 | ||
11518 | rs->readahead_cache.fd = -1; | |
11519 | } | |
11520 | ||
11521 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
11522 | ||
11523 | static void | |
11524 | readahead_cache_invalidate_fd (int fd) | |
11525 | { | |
11526 | struct remote_state *rs = get_remote_state (); | |
11527 | ||
11528 | if (rs->readahead_cache.fd == fd) | |
11529 | rs->readahead_cache.fd = -1; | |
11530 | } | |
11531 | ||
15a201c8 GB |
11532 | /* Set the filesystem remote_hostio functions that take FILENAME |
11533 | arguments will use. Return 0 on success, or -1 if an error | |
11534 | occurs (and set *REMOTE_ERRNO). */ | |
11535 | ||
11536 | static int | |
11537 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11538 | { | |
11539 | struct remote_state *rs = get_remote_state (); | |
11540 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11541 | char *p = rs->buf; | |
11542 | int left = get_remote_packet_size () - 1; | |
11543 | char arg[9]; | |
11544 | int ret; | |
11545 | ||
11546 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11547 | return 0; | |
11548 | ||
11549 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11550 | return 0; | |
11551 | ||
11552 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11553 | ||
11554 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11555 | remote_buffer_add_string (&p, &left, arg); | |
11556 | ||
11557 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11558 | remote_errno, NULL, NULL); | |
11559 | ||
11560 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11561 | return 0; | |
11562 | ||
11563 | if (ret == 0) | |
11564 | rs->fs_pid = required_pid; | |
11565 | ||
11566 | return ret; | |
11567 | } | |
11568 | ||
12e2a5fd | 11569 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11570 | |
11571 | static int | |
cd897586 | 11572 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11573 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11574 | int flags, int mode, int warn_if_slow, |
11575 | int *remote_errno) | |
a6b151f1 DJ |
11576 | { |
11577 | struct remote_state *rs = get_remote_state (); | |
11578 | char *p = rs->buf; | |
11579 | int left = get_remote_packet_size () - 1; | |
11580 | ||
4313b8c0 GB |
11581 | if (warn_if_slow) |
11582 | { | |
11583 | static int warning_issued = 0; | |
11584 | ||
11585 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11586 | filename); | |
11587 | ||
11588 | if (!warning_issued) | |
11589 | { | |
11590 | warning (_("File transfers from remote targets can be slow." | |
11591 | " Use \"set sysroot\" to access files locally" | |
11592 | " instead.")); | |
11593 | warning_issued = 1; | |
11594 | } | |
11595 | } | |
11596 | ||
15a201c8 GB |
11597 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11598 | return -1; | |
11599 | ||
a6b151f1 DJ |
11600 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11601 | ||
11602 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11603 | strlen (filename)); | |
11604 | remote_buffer_add_string (&p, &left, ","); | |
11605 | ||
11606 | remote_buffer_add_int (&p, &left, flags); | |
11607 | remote_buffer_add_string (&p, &left, ","); | |
11608 | ||
11609 | remote_buffer_add_int (&p, &left, mode); | |
11610 | ||
11611 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11612 | remote_errno, NULL, NULL); | |
11613 | } | |
11614 | ||
12e2a5fd | 11615 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11616 | |
11617 | static int | |
0d866f62 TT |
11618 | remote_hostio_pwrite (struct target_ops *self, |
11619 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11620 | ULONGEST offset, int *remote_errno) |
11621 | { | |
11622 | struct remote_state *rs = get_remote_state (); | |
11623 | char *p = rs->buf; | |
11624 | int left = get_remote_packet_size (); | |
11625 | int out_len; | |
11626 | ||
80152258 PA |
11627 | readahead_cache_invalidate_fd (fd); |
11628 | ||
a6b151f1 DJ |
11629 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11630 | ||
11631 | remote_buffer_add_int (&p, &left, fd); | |
11632 | remote_buffer_add_string (&p, &left, ","); | |
11633 | ||
11634 | remote_buffer_add_int (&p, &left, offset); | |
11635 | remote_buffer_add_string (&p, &left, ","); | |
11636 | ||
124e13d9 | 11637 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11638 | get_remote_packet_size () - (p - rs->buf)); |
11639 | ||
11640 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11641 | remote_errno, NULL, NULL); | |
11642 | } | |
11643 | ||
80152258 PA |
11644 | /* Helper for the implementation of to_fileio_pread. Read the file |
11645 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11646 | |
11647 | static int | |
80152258 PA |
11648 | remote_hostio_pread_vFile (struct target_ops *self, |
11649 | int fd, gdb_byte *read_buf, int len, | |
11650 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11651 | { |
11652 | struct remote_state *rs = get_remote_state (); | |
11653 | char *p = rs->buf; | |
11654 | char *attachment; | |
11655 | int left = get_remote_packet_size (); | |
11656 | int ret, attachment_len; | |
11657 | int read_len; | |
11658 | ||
11659 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11660 | ||
11661 | remote_buffer_add_int (&p, &left, fd); | |
11662 | remote_buffer_add_string (&p, &left, ","); | |
11663 | ||
11664 | remote_buffer_add_int (&p, &left, len); | |
11665 | remote_buffer_add_string (&p, &left, ","); | |
11666 | ||
11667 | remote_buffer_add_int (&p, &left, offset); | |
11668 | ||
11669 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11670 | remote_errno, &attachment, | |
11671 | &attachment_len); | |
11672 | ||
11673 | if (ret < 0) | |
11674 | return ret; | |
11675 | ||
bc20a4af | 11676 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11677 | read_buf, len); |
11678 | if (read_len != ret) | |
11679 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11680 | ||
11681 | return ret; | |
11682 | } | |
11683 | ||
80152258 PA |
11684 | /* Serve pread from the readahead cache. Returns number of bytes |
11685 | read, or 0 if the request can't be served from the cache. */ | |
11686 | ||
11687 | static int | |
11688 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11689 | int fd, gdb_byte *read_buf, size_t len, | |
11690 | ULONGEST offset) | |
11691 | { | |
11692 | struct readahead_cache *cache = &rs->readahead_cache; | |
11693 | ||
11694 | if (cache->fd == fd | |
11695 | && cache->offset <= offset | |
11696 | && offset < cache->offset + cache->bufsize) | |
11697 | { | |
11698 | ULONGEST max = cache->offset + cache->bufsize; | |
11699 | ||
11700 | if (offset + len > max) | |
11701 | len = max - offset; | |
11702 | ||
11703 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11704 | return len; | |
11705 | } | |
11706 | ||
11707 | return 0; | |
11708 | } | |
11709 | ||
11710 | /* Implementation of to_fileio_pread. */ | |
11711 | ||
11712 | static int | |
11713 | remote_hostio_pread (struct target_ops *self, | |
11714 | int fd, gdb_byte *read_buf, int len, | |
11715 | ULONGEST offset, int *remote_errno) | |
11716 | { | |
11717 | int ret; | |
11718 | struct remote_state *rs = get_remote_state (); | |
11719 | struct readahead_cache *cache = &rs->readahead_cache; | |
11720 | ||
11721 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11722 | if (ret > 0) | |
11723 | { | |
11724 | cache->hit_count++; | |
11725 | ||
11726 | if (remote_debug) | |
11727 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11728 | pulongest (cache->hit_count)); | |
11729 | return ret; | |
11730 | } | |
11731 | ||
11732 | cache->miss_count++; | |
11733 | if (remote_debug) | |
11734 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11735 | pulongest (cache->miss_count)); | |
11736 | ||
11737 | cache->fd = fd; | |
11738 | cache->offset = offset; | |
11739 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11740 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11741 | |
11742 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11743 | cache->offset, remote_errno); | |
11744 | if (ret <= 0) | |
11745 | { | |
11746 | readahead_cache_invalidate_fd (fd); | |
11747 | return ret; | |
11748 | } | |
11749 | ||
11750 | cache->bufsize = ret; | |
11751 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11752 | } | |
11753 | ||
12e2a5fd | 11754 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11755 | |
11756 | static int | |
df39ea25 | 11757 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11758 | { |
11759 | struct remote_state *rs = get_remote_state (); | |
11760 | char *p = rs->buf; | |
11761 | int left = get_remote_packet_size () - 1; | |
11762 | ||
80152258 PA |
11763 | readahead_cache_invalidate_fd (fd); |
11764 | ||
a6b151f1 DJ |
11765 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11766 | ||
11767 | remote_buffer_add_int (&p, &left, fd); | |
11768 | ||
11769 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11770 | remote_errno, NULL, NULL); | |
11771 | } | |
11772 | ||
12e2a5fd | 11773 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11774 | |
11775 | static int | |
dbbca37d | 11776 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11777 | struct inferior *inf, const char *filename, |
11778 | int *remote_errno) | |
a6b151f1 DJ |
11779 | { |
11780 | struct remote_state *rs = get_remote_state (); | |
11781 | char *p = rs->buf; | |
11782 | int left = get_remote_packet_size () - 1; | |
11783 | ||
15a201c8 GB |
11784 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11785 | return -1; | |
11786 | ||
a6b151f1 DJ |
11787 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11788 | ||
11789 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11790 | strlen (filename)); | |
11791 | ||
11792 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11793 | remote_errno, NULL, NULL); | |
11794 | } | |
11795 | ||
12e2a5fd | 11796 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
11797 | |
11798 | static char * | |
fab5aa7c | 11799 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11800 | struct inferior *inf, const char *filename, |
11801 | int *remote_errno) | |
b9e7b9c3 UW |
11802 | { |
11803 | struct remote_state *rs = get_remote_state (); | |
11804 | char *p = rs->buf; | |
11805 | char *attachment; | |
11806 | int left = get_remote_packet_size (); | |
11807 | int len, attachment_len; | |
11808 | int read_len; | |
11809 | char *ret; | |
11810 | ||
15a201c8 GB |
11811 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11812 | return NULL; | |
11813 | ||
b9e7b9c3 UW |
11814 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11815 | ||
11816 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11817 | strlen (filename)); | |
11818 | ||
11819 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11820 | remote_errno, &attachment, | |
11821 | &attachment_len); | |
11822 | ||
11823 | if (len < 0) | |
11824 | return NULL; | |
11825 | ||
224c3ddb | 11826 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 11827 | |
bc20a4af PA |
11828 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11829 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
11830 | if (read_len != len) |
11831 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11832 | ||
11833 | ret[len] = '\0'; | |
11834 | return ret; | |
11835 | } | |
11836 | ||
12e2a5fd | 11837 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11838 | |
11839 | static int | |
11840 | remote_hostio_fstat (struct target_ops *self, | |
11841 | int fd, struct stat *st, | |
11842 | int *remote_errno) | |
11843 | { | |
11844 | struct remote_state *rs = get_remote_state (); | |
11845 | char *p = rs->buf; | |
11846 | int left = get_remote_packet_size (); | |
11847 | int attachment_len, ret; | |
11848 | char *attachment; | |
11849 | struct fio_stat fst; | |
11850 | int read_len; | |
11851 | ||
464b0089 GB |
11852 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11853 | ||
11854 | remote_buffer_add_int (&p, &left, fd); | |
11855 | ||
11856 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11857 | remote_errno, &attachment, | |
11858 | &attachment_len); | |
11859 | if (ret < 0) | |
0a93529c | 11860 | { |
464b0089 GB |
11861 | if (*remote_errno != FILEIO_ENOSYS) |
11862 | return ret; | |
11863 | ||
0a93529c GB |
11864 | /* Strictly we should return -1, ENOSYS here, but when |
11865 | "set sysroot remote:" was implemented in August 2008 | |
11866 | BFD's need for a stat function was sidestepped with | |
11867 | this hack. This was not remedied until March 2015 | |
11868 | so we retain the previous behavior to avoid breaking | |
11869 | compatibility. | |
11870 | ||
11871 | Note that the memset is a March 2015 addition; older | |
11872 | GDBs set st_size *and nothing else* so the structure | |
11873 | would have garbage in all other fields. This might | |
11874 | break something but retaining the previous behavior | |
11875 | here would be just too wrong. */ | |
11876 | ||
11877 | memset (st, 0, sizeof (struct stat)); | |
11878 | st->st_size = INT_MAX; | |
11879 | return 0; | |
11880 | } | |
11881 | ||
0a93529c GB |
11882 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11883 | (gdb_byte *) &fst, sizeof (fst)); | |
11884 | ||
11885 | if (read_len != ret) | |
11886 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11887 | ||
11888 | if (read_len != sizeof (fst)) | |
11889 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11890 | read_len, (int) sizeof (fst)); | |
11891 | ||
11892 | remote_fileio_to_host_stat (&fst, st); | |
11893 | ||
11894 | return 0; | |
11895 | } | |
11896 | ||
12e2a5fd | 11897 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11898 | |
11899 | static int | |
11900 | remote_filesystem_is_local (struct target_ops *self) | |
11901 | { | |
11902 | /* Valgrind GDB presents itself as a remote target but works | |
11903 | on the local filesystem: it does not implement remote get | |
11904 | and users are not expected to set a sysroot. To handle | |
11905 | this case we treat the remote filesystem as local if the | |
11906 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11907 | does not support vFile:open. */ | |
a3be80c3 | 11908 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11909 | { |
11910 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11911 | ||
11912 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11913 | { | |
11914 | int fd, remote_errno; | |
11915 | ||
11916 | /* Try opening a file to probe support. The supplied | |
11917 | filename is irrelevant, we only care about whether | |
11918 | the stub recognizes the packet or not. */ | |
07c138c8 | 11919 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11920 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11921 | &remote_errno); |
11922 | ||
11923 | if (fd >= 0) | |
11924 | remote_hostio_close (self, fd, &remote_errno); | |
11925 | ||
11926 | ps = packet_support (PACKET_vFile_open); | |
11927 | } | |
11928 | ||
11929 | if (ps == PACKET_DISABLE) | |
11930 | { | |
11931 | static int warning_issued = 0; | |
11932 | ||
11933 | if (!warning_issued) | |
11934 | { | |
11935 | warning (_("remote target does not support file" | |
11936 | " transfer, attempting to access files" | |
11937 | " from local filesystem.")); | |
11938 | warning_issued = 1; | |
11939 | } | |
11940 | ||
11941 | return 1; | |
11942 | } | |
11943 | } | |
11944 | ||
11945 | return 0; | |
11946 | } | |
11947 | ||
a6b151f1 DJ |
11948 | static int |
11949 | remote_fileio_errno_to_host (int errnum) | |
11950 | { | |
11951 | switch (errnum) | |
11952 | { | |
11953 | case FILEIO_EPERM: | |
11954 | return EPERM; | |
11955 | case FILEIO_ENOENT: | |
11956 | return ENOENT; | |
11957 | case FILEIO_EINTR: | |
11958 | return EINTR; | |
11959 | case FILEIO_EIO: | |
11960 | return EIO; | |
11961 | case FILEIO_EBADF: | |
11962 | return EBADF; | |
11963 | case FILEIO_EACCES: | |
11964 | return EACCES; | |
11965 | case FILEIO_EFAULT: | |
11966 | return EFAULT; | |
11967 | case FILEIO_EBUSY: | |
11968 | return EBUSY; | |
11969 | case FILEIO_EEXIST: | |
11970 | return EEXIST; | |
11971 | case FILEIO_ENODEV: | |
11972 | return ENODEV; | |
11973 | case FILEIO_ENOTDIR: | |
11974 | return ENOTDIR; | |
11975 | case FILEIO_EISDIR: | |
11976 | return EISDIR; | |
11977 | case FILEIO_EINVAL: | |
11978 | return EINVAL; | |
11979 | case FILEIO_ENFILE: | |
11980 | return ENFILE; | |
11981 | case FILEIO_EMFILE: | |
11982 | return EMFILE; | |
11983 | case FILEIO_EFBIG: | |
11984 | return EFBIG; | |
11985 | case FILEIO_ENOSPC: | |
11986 | return ENOSPC; | |
11987 | case FILEIO_ESPIPE: | |
11988 | return ESPIPE; | |
11989 | case FILEIO_EROFS: | |
11990 | return EROFS; | |
11991 | case FILEIO_ENOSYS: | |
11992 | return ENOSYS; | |
11993 | case FILEIO_ENAMETOOLONG: | |
11994 | return ENAMETOOLONG; | |
11995 | } | |
11996 | return -1; | |
11997 | } | |
11998 | ||
11999 | static char * | |
12000 | remote_hostio_error (int errnum) | |
12001 | { | |
12002 | int host_error = remote_fileio_errno_to_host (errnum); | |
12003 | ||
12004 | if (host_error == -1) | |
12005 | error (_("Unknown remote I/O error %d"), errnum); | |
12006 | else | |
12007 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12008 | } | |
12009 | ||
a6b151f1 DJ |
12010 | static void |
12011 | remote_hostio_close_cleanup (void *opaque) | |
12012 | { | |
12013 | int fd = *(int *) opaque; | |
12014 | int remote_errno; | |
12015 | ||
df39ea25 | 12016 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
12017 | } |
12018 | ||
12019 | void | |
12020 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
12021 | { | |
12022 | struct cleanup *back_to, *close_cleanup; | |
12023 | int retcode, fd, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
12024 | gdb_byte *buffer; |
12025 | int bytes_in_buffer; | |
12026 | int saw_eof; | |
12027 | ULONGEST offset; | |
5d93a237 | 12028 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12029 | |
5d93a237 | 12030 | if (!rs->remote_desc) |
a6b151f1 DJ |
12031 | error (_("command can only be used with remote target")); |
12032 | ||
d419f42d | 12033 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12034 | if (file == NULL) |
12035 | perror_with_name (local_file); | |
a6b151f1 | 12036 | |
07c138c8 | 12037 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 12038 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 12039 | | FILEIO_O_TRUNC), |
4313b8c0 | 12040 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
12041 | if (fd == -1) |
12042 | remote_hostio_error (remote_errno); | |
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 | bytes_in_buffer = 0; | |
12053 | saw_eof = 0; | |
12054 | offset = 0; | |
12055 | while (bytes_in_buffer || !saw_eof) | |
12056 | { | |
12057 | if (!saw_eof) | |
12058 | { | |
3e43a32a MS |
12059 | bytes = fread (buffer + bytes_in_buffer, 1, |
12060 | io_size - bytes_in_buffer, | |
d419f42d | 12061 | file.get ()); |
a6b151f1 DJ |
12062 | if (bytes == 0) |
12063 | { | |
d419f42d | 12064 | if (ferror (file.get ())) |
a6b151f1 DJ |
12065 | error (_("Error reading %s."), local_file); |
12066 | else | |
12067 | { | |
12068 | /* EOF. Unless there is something still in the | |
12069 | buffer from the last iteration, we are done. */ | |
12070 | saw_eof = 1; | |
12071 | if (bytes_in_buffer == 0) | |
12072 | break; | |
12073 | } | |
12074 | } | |
12075 | } | |
12076 | else | |
12077 | bytes = 0; | |
12078 | ||
12079 | bytes += bytes_in_buffer; | |
12080 | bytes_in_buffer = 0; | |
12081 | ||
0d866f62 TT |
12082 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
12083 | fd, buffer, bytes, | |
3e43a32a | 12084 | offset, &remote_errno); |
a6b151f1 DJ |
12085 | |
12086 | if (retcode < 0) | |
12087 | remote_hostio_error (remote_errno); | |
12088 | else if (retcode == 0) | |
12089 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12090 | else if (retcode < bytes) | |
12091 | { | |
12092 | /* Short write. Save the rest of the read data for the next | |
12093 | write. */ | |
12094 | bytes_in_buffer = bytes - retcode; | |
12095 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
12096 | } | |
12097 | ||
12098 | offset += retcode; | |
12099 | } | |
12100 | ||
12101 | discard_cleanups (close_cleanup); | |
df39ea25 | 12102 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12103 | remote_hostio_error (remote_errno); |
12104 | ||
12105 | if (from_tty) | |
12106 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
12107 | do_cleanups (back_to); | |
12108 | } | |
12109 | ||
12110 | void | |
12111 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
12112 | { | |
12113 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 12114 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12115 | gdb_byte *buffer; |
12116 | ULONGEST offset; | |
5d93a237 | 12117 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12118 | |
5d93a237 | 12119 | if (!rs->remote_desc) |
a6b151f1 DJ |
12120 | error (_("command can only be used with remote target")); |
12121 | ||
07c138c8 | 12122 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
12123 | remote_file, FILEIO_O_RDONLY, 0, 0, |
12124 | &remote_errno); | |
a6b151f1 DJ |
12125 | if (fd == -1) |
12126 | remote_hostio_error (remote_errno); | |
12127 | ||
d419f42d | 12128 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12129 | if (file == NULL) |
12130 | perror_with_name (local_file); | |
a6b151f1 DJ |
12131 | |
12132 | /* Send up to this many bytes at once. They won't all fit in the | |
12133 | remote packet limit, so we'll transfer slightly fewer. */ | |
12134 | io_size = get_remote_packet_size (); | |
224c3ddb | 12135 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12136 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
12137 | |
12138 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
12139 | ||
12140 | offset = 0; | |
12141 | while (1) | |
12142 | { | |
a3be983c TT |
12143 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
12144 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
12145 | if (bytes == 0) |
12146 | /* Success, but no bytes, means end-of-file. */ | |
12147 | break; | |
12148 | if (bytes == -1) | |
12149 | remote_hostio_error (remote_errno); | |
12150 | ||
12151 | offset += bytes; | |
12152 | ||
d419f42d | 12153 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12154 | if (bytes == 0) |
12155 | perror_with_name (local_file); | |
12156 | } | |
12157 | ||
12158 | discard_cleanups (close_cleanup); | |
df39ea25 | 12159 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12160 | remote_hostio_error (remote_errno); |
12161 | ||
12162 | if (from_tty) | |
12163 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12164 | do_cleanups (back_to); | |
12165 | } | |
12166 | ||
12167 | void | |
12168 | remote_file_delete (const char *remote_file, int from_tty) | |
12169 | { | |
12170 | int retcode, remote_errno; | |
5d93a237 | 12171 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12172 | |
5d93a237 | 12173 | if (!rs->remote_desc) |
a6b151f1 DJ |
12174 | error (_("command can only be used with remote target")); |
12175 | ||
dbbca37d | 12176 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12177 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12178 | if (retcode == -1) |
12179 | remote_hostio_error (remote_errno); | |
12180 | ||
12181 | if (from_tty) | |
12182 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12183 | } | |
12184 | ||
12185 | static void | |
ac88e2de | 12186 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12187 | { |
d1a41061 PP |
12188 | if (args == NULL) |
12189 | error_no_arg (_("file to put")); | |
12190 | ||
773a1edc | 12191 | gdb_argv argv (args); |
a6b151f1 DJ |
12192 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12193 | error (_("Invalid parameters to remote put")); | |
12194 | ||
12195 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12196 | } |
12197 | ||
12198 | static void | |
ac88e2de | 12199 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12200 | { |
d1a41061 PP |
12201 | if (args == NULL) |
12202 | error_no_arg (_("file to get")); | |
12203 | ||
773a1edc | 12204 | gdb_argv argv (args); |
a6b151f1 DJ |
12205 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12206 | error (_("Invalid parameters to remote get")); | |
12207 | ||
12208 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12209 | } |
12210 | ||
12211 | static void | |
ac88e2de | 12212 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12213 | { |
d1a41061 PP |
12214 | if (args == NULL) |
12215 | error_no_arg (_("file to delete")); | |
12216 | ||
773a1edc | 12217 | gdb_argv argv (args); |
a6b151f1 DJ |
12218 | if (argv[0] == NULL || argv[1] != NULL) |
12219 | error (_("Invalid parameters to remote delete")); | |
12220 | ||
12221 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12222 | } |
12223 | ||
12224 | static void | |
981a3fb3 | 12225 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12226 | { |
635c7e8a | 12227 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12228 | } |
12229 | ||
b2175913 | 12230 | static int |
19db3e69 | 12231 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 12232 | { |
4082afcc PA |
12233 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12234 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
12235 | return 1; |
12236 | else | |
12237 | return 0; | |
b2175913 MS |
12238 | } |
12239 | ||
74531fed | 12240 | static int |
2a9a2795 | 12241 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
12242 | { |
12243 | return 1; | |
12244 | } | |
12245 | ||
03583c20 | 12246 | static int |
2bfc0540 | 12247 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
12248 | { |
12249 | /* Only supported in extended mode. */ | |
12250 | return 0; | |
12251 | } | |
12252 | ||
8a305172 | 12253 | static int |
86ce2668 | 12254 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
12255 | { |
12256 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12257 | |
8020350c | 12258 | return remote_multi_process_p (rs); |
8a305172 PA |
12259 | } |
12260 | ||
70221824 | 12261 | static int |
782b2b07 SS |
12262 | remote_supports_cond_tracepoints (void) |
12263 | { | |
4082afcc | 12264 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12265 | } |
12266 | ||
3788aec7 | 12267 | static int |
efcc2da7 | 12268 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 12269 | { |
4082afcc | 12270 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12271 | } |
12272 | ||
70221824 | 12273 | static int |
7a697b8d SS |
12274 | remote_supports_fast_tracepoints (void) |
12275 | { | |
4082afcc | 12276 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12277 | } |
12278 | ||
0fb4aa4b PA |
12279 | static int |
12280 | remote_supports_static_tracepoints (void) | |
12281 | { | |
4082afcc | 12282 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12283 | } |
12284 | ||
1e4d1764 YQ |
12285 | static int |
12286 | remote_supports_install_in_trace (void) | |
12287 | { | |
4082afcc | 12288 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12289 | } |
12290 | ||
d248b706 | 12291 | static int |
7d178d6a | 12292 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 12293 | { |
4082afcc PA |
12294 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12295 | == PACKET_ENABLE); | |
d248b706 KY |
12296 | } |
12297 | ||
3065dfb6 | 12298 | static int |
6de37a3a | 12299 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 12300 | { |
4082afcc | 12301 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12302 | } |
12303 | ||
d3ce09f5 | 12304 | static int |
78eff0ec | 12305 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 12306 | { |
4082afcc | 12307 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12308 | } |
12309 | ||
35b1e5cc | 12310 | static void |
ecae04e1 | 12311 | remote_trace_init (struct target_ops *self) |
35b1e5cc | 12312 | { |
b6bb3468 PA |
12313 | struct remote_state *rs = get_remote_state (); |
12314 | ||
35b1e5cc | 12315 | putpkt ("QTinit"); |
b6bb3468 PA |
12316 | remote_get_noisy_reply (); |
12317 | if (strcmp (rs->buf, "OK") != 0) | |
35b1e5cc SS |
12318 | error (_("Target does not support this command.")); |
12319 | } | |
12320 | ||
12321 | static void free_actions_list (char **actions_list); | |
12322 | static void free_actions_list_cleanup_wrapper (void *); | |
12323 | static void | |
12324 | free_actions_list_cleanup_wrapper (void *al) | |
12325 | { | |
19ba03f4 | 12326 | free_actions_list ((char **) al); |
35b1e5cc SS |
12327 | } |
12328 | ||
12329 | static void | |
12330 | free_actions_list (char **actions_list) | |
12331 | { | |
12332 | int ndx; | |
12333 | ||
12334 | if (actions_list == 0) | |
12335 | return; | |
12336 | ||
12337 | for (ndx = 0; actions_list[ndx]; ndx++) | |
12338 | xfree (actions_list[ndx]); | |
12339 | ||
12340 | xfree (actions_list); | |
12341 | } | |
12342 | ||
409873ef SS |
12343 | /* Recursive routine to walk through command list including loops, and |
12344 | download packets for each command. */ | |
12345 | ||
12346 | static void | |
12347 | remote_download_command_source (int num, ULONGEST addr, | |
12348 | struct command_line *cmds) | |
12349 | { | |
12350 | struct remote_state *rs = get_remote_state (); | |
12351 | struct command_line *cmd; | |
12352 | ||
12353 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12354 | { | |
0df8b418 | 12355 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12356 | strcpy (rs->buf, "QTDPsrc:"); |
12357 | encode_source_string (num, addr, "cmd", cmd->line, | |
12358 | rs->buf + strlen (rs->buf), | |
12359 | rs->buf_size - strlen (rs->buf)); | |
12360 | putpkt (rs->buf); | |
b6bb3468 PA |
12361 | remote_get_noisy_reply (); |
12362 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12363 | warning (_("Target does not support source download.")); |
12364 | ||
12365 | if (cmd->control_type == while_control | |
12366 | || cmd->control_type == while_stepping_control) | |
12367 | { | |
12368 | remote_download_command_source (num, addr, *cmd->body_list); | |
12369 | ||
0df8b418 | 12370 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12371 | strcpy (rs->buf, "QTDPsrc:"); |
12372 | encode_source_string (num, addr, "cmd", "end", | |
12373 | rs->buf + strlen (rs->buf), | |
12374 | rs->buf_size - strlen (rs->buf)); | |
12375 | putpkt (rs->buf); | |
b6bb3468 PA |
12376 | remote_get_noisy_reply (); |
12377 | if (strcmp (rs->buf, "OK")) | |
409873ef SS |
12378 | warning (_("Target does not support source download.")); |
12379 | } | |
12380 | } | |
12381 | } | |
12382 | ||
35b1e5cc | 12383 | static void |
548f7808 | 12384 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 12385 | { |
bba74b36 | 12386 | #define BUF_SIZE 2048 |
e8ba3115 | 12387 | |
35b1e5cc | 12388 | CORE_ADDR tpaddr; |
409873ef | 12389 | char addrbuf[40]; |
bba74b36 | 12390 | char buf[BUF_SIZE]; |
35b1e5cc SS |
12391 | char **tdp_actions; |
12392 | char **stepping_actions; | |
12393 | int ndx; | |
12394 | struct cleanup *old_chain = NULL; | |
35b1e5cc | 12395 | char *pkt; |
e8ba3115 | 12396 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12397 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12398 | struct remote_state *rs = get_remote_state (); |
35b1e5cc | 12399 | |
dc673c81 | 12400 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12401 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
12402 | tdp_actions); | |
12403 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
12404 | stepping_actions); | |
12405 | ||
12406 | tpaddr = loc->address; | |
12407 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12408 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12409 | addrbuf, /* address */ | |
12410 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12411 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12412 | /* Fast tracepoints are mostly handled by the target, but we can |
12413 | tell the target how big of an instruction block should be moved | |
12414 | around. */ | |
12415 | if (b->type == bp_fast_tracepoint) | |
12416 | { | |
12417 | /* Only test for support at download time; we may not know | |
12418 | target capabilities at definition time. */ | |
12419 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12420 | { |
6b940e6a PL |
12421 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12422 | NULL)) | |
bba74b36 | 12423 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12424 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12425 | else |
e8ba3115 YQ |
12426 | /* If it passed validation at definition but fails now, |
12427 | something is very wrong. */ | |
12428 | internal_error (__FILE__, __LINE__, | |
12429 | _("Fast tracepoint not " | |
12430 | "valid during download")); | |
35b1e5cc | 12431 | } |
e8ba3115 YQ |
12432 | else |
12433 | /* Fast tracepoints are functionally identical to regular | |
12434 | tracepoints, so don't take lack of support as a reason to | |
12435 | give up on the trace run. */ | |
12436 | warning (_("Target does not support fast tracepoints, " | |
12437 | "downloading %d as regular tracepoint"), b->number); | |
12438 | } | |
12439 | else if (b->type == bp_static_tracepoint) | |
12440 | { | |
12441 | /* Only test for support at download time; we may not know | |
12442 | target capabilities at definition time. */ | |
12443 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12444 | { |
e8ba3115 | 12445 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12446 | |
e8ba3115 YQ |
12447 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12448 | strcat (buf, ":S"); | |
0fb4aa4b | 12449 | else |
e8ba3115 | 12450 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12451 | } |
e8ba3115 YQ |
12452 | else |
12453 | /* Fast tracepoints are functionally identical to regular | |
12454 | tracepoints, so don't take lack of support as a reason | |
12455 | to give up on the trace run. */ | |
12456 | error (_("Target does not support static tracepoints")); | |
12457 | } | |
12458 | /* If the tracepoint has a conditional, make it into an agent | |
12459 | expression and append to the definition. */ | |
12460 | if (loc->cond) | |
12461 | { | |
12462 | /* Only test support at download time, we may not know target | |
12463 | capabilities at definition time. */ | |
12464 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12465 | { |
833177a4 | 12466 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12467 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12468 | aexpr->len); | |
e8ba3115 YQ |
12469 | pkt = buf + strlen (buf); |
12470 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
12471 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
12472 | *pkt = '\0'; | |
35b1e5cc | 12473 | } |
e8ba3115 YQ |
12474 | else |
12475 | warning (_("Target does not support conditional tracepoints, " | |
12476 | "ignoring tp %d cond"), b->number); | |
12477 | } | |
35b1e5cc | 12478 | |
d9b3f62e | 12479 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12480 | strcat (buf, "-"); |
12481 | putpkt (buf); | |
b6bb3468 PA |
12482 | remote_get_noisy_reply (); |
12483 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12484 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12485 | |
e8ba3115 YQ |
12486 | /* do_single_steps (t); */ |
12487 | if (tdp_actions) | |
12488 | { | |
12489 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 12490 | { |
e8ba3115 | 12491 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12492 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
12493 | b->number, addrbuf, /* address */ | |
12494 | tdp_actions[ndx], | |
12495 | ((tdp_actions[ndx + 1] || stepping_actions) | |
12496 | ? '-' : 0)); | |
e8ba3115 | 12497 | putpkt (buf); |
b6bb3468 PA |
12498 | remote_get_noisy_reply (); |
12499 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12500 | error (_("Error on target while setting tracepoints.")); |
35b1e5cc | 12501 | } |
e8ba3115 YQ |
12502 | } |
12503 | if (stepping_actions) | |
12504 | { | |
12505 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 12506 | { |
e8ba3115 | 12507 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12508 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
12509 | b->number, addrbuf, /* address */ | |
12510 | ((ndx == 0) ? "S" : ""), | |
12511 | stepping_actions[ndx], | |
12512 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 | 12513 | putpkt (buf); |
b6bb3468 PA |
12514 | remote_get_noisy_reply (); |
12515 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12516 | error (_("Error on target while setting tracepoints.")); |
35b1e5cc | 12517 | } |
e8ba3115 | 12518 | } |
409873ef | 12519 | |
4082afcc | 12520 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12521 | { |
f00aae0f | 12522 | if (b->location != NULL) |
409873ef | 12523 | { |
e8ba3115 | 12524 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12525 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12526 | event_location_to_string (b->location.get ()), |
f00aae0f | 12527 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 | 12528 | putpkt (buf); |
b6bb3468 PA |
12529 | remote_get_noisy_reply (); |
12530 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 | 12531 | warning (_("Target does not support source download.")); |
409873ef | 12532 | } |
e8ba3115 YQ |
12533 | if (b->cond_string) |
12534 | { | |
12535 | strcpy (buf, "QTDPsrc:"); | |
12536 | encode_source_string (b->number, loc->address, | |
12537 | "cond", b->cond_string, buf + strlen (buf), | |
12538 | 2048 - strlen (buf)); | |
12539 | putpkt (buf); | |
b6bb3468 PA |
12540 | remote_get_noisy_reply (); |
12541 | if (strcmp (rs->buf, "OK")) | |
e8ba3115 YQ |
12542 | warning (_("Target does not support source download.")); |
12543 | } | |
12544 | remote_download_command_source (b->number, loc->address, | |
12545 | breakpoint_commands (b)); | |
35b1e5cc | 12546 | } |
e8ba3115 YQ |
12547 | |
12548 | do_cleanups (old_chain); | |
35b1e5cc SS |
12549 | } |
12550 | ||
1e4d1764 | 12551 | static int |
a52a8357 | 12552 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12553 | { |
1e51243a PA |
12554 | struct remote_state *rs = get_remote_state (); |
12555 | struct trace_status *ts; | |
12556 | int status; | |
12557 | ||
12558 | /* Don't try to install tracepoints until we've relocated our | |
12559 | symbols, and fetched and merged the target's tracepoint list with | |
12560 | ours. */ | |
12561 | if (rs->starting_up) | |
12562 | return 0; | |
12563 | ||
12564 | ts = current_trace_status (); | |
8bd200f1 | 12565 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12566 | |
12567 | if (status == -1 || !ts->running_known || !ts->running) | |
12568 | return 0; | |
12569 | ||
12570 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12571 | installing tracepoint in trace, we have to return. */ | |
12572 | if (!remote_supports_install_in_trace ()) | |
12573 | return 0; | |
12574 | ||
12575 | return 1; | |
12576 | } | |
12577 | ||
12578 | ||
35b1e5cc | 12579 | static void |
559d2b81 TT |
12580 | remote_download_trace_state_variable (struct target_ops *self, |
12581 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
12582 | { |
12583 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12584 | char *p; |
35b1e5cc | 12585 | |
bba74b36 YQ |
12586 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
12587 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
12588 | tsv->builtin); | |
00bf0b85 SS |
12589 | p = rs->buf + strlen (rs->buf); |
12590 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
12591 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 12592 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 12593 | *p++ = '\0'; |
35b1e5cc | 12594 | putpkt (rs->buf); |
b6bb3468 PA |
12595 | remote_get_noisy_reply (); |
12596 | if (*rs->buf == '\0') | |
ad91cd99 | 12597 | error (_("Target does not support this command.")); |
b6bb3468 | 12598 | if (strcmp (rs->buf, "OK") != 0) |
ad91cd99 | 12599 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
12600 | } |
12601 | ||
d248b706 | 12602 | static void |
46670d57 TT |
12603 | remote_enable_tracepoint (struct target_ops *self, |
12604 | struct bp_location *location) | |
d248b706 KY |
12605 | { |
12606 | struct remote_state *rs = get_remote_state (); | |
12607 | char addr_buf[40]; | |
12608 | ||
12609 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12610 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12611 | location->owner->number, addr_buf); | |
d248b706 | 12612 | putpkt (rs->buf); |
b6bb3468 | 12613 | remote_get_noisy_reply (); |
d248b706 KY |
12614 | if (*rs->buf == '\0') |
12615 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12616 | if (strcmp (rs->buf, "OK") != 0) | |
12617 | error (_("Error on target while enabling tracepoint.")); | |
12618 | } | |
12619 | ||
12620 | static void | |
780b049c TT |
12621 | remote_disable_tracepoint (struct target_ops *self, |
12622 | struct bp_location *location) | |
d248b706 KY |
12623 | { |
12624 | struct remote_state *rs = get_remote_state (); | |
12625 | char addr_buf[40]; | |
12626 | ||
12627 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12628 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12629 | location->owner->number, addr_buf); | |
d248b706 | 12630 | putpkt (rs->buf); |
b6bb3468 | 12631 | remote_get_noisy_reply (); |
d248b706 KY |
12632 | if (*rs->buf == '\0') |
12633 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12634 | if (strcmp (rs->buf, "OK") != 0) | |
12635 | error (_("Error on target while disabling tracepoint.")); | |
12636 | } | |
12637 | ||
35b1e5cc | 12638 | static void |
583f9a86 | 12639 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12640 | { |
12641 | asection *s; | |
81b9b86e | 12642 | bfd *abfd = NULL; |
35b1e5cc | 12643 | bfd_size_type size; |
608bcef2 | 12644 | bfd_vma vma; |
35b1e5cc | 12645 | int anysecs = 0; |
c2fa21f1 | 12646 | int offset = 0; |
35b1e5cc SS |
12647 | |
12648 | if (!exec_bfd) | |
12649 | return; /* No information to give. */ | |
12650 | ||
b6bb3468 PA |
12651 | struct remote_state *rs = get_remote_state (); |
12652 | ||
12653 | strcpy (rs->buf, "QTro"); | |
12654 | offset = strlen (rs->buf); | |
35b1e5cc SS |
12655 | for (s = exec_bfd->sections; s; s = s->next) |
12656 | { | |
12657 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12658 | int sec_length; |
35b1e5cc SS |
12659 | |
12660 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12661 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12662 | (s->flags & SEC_READONLY) == 0) |
12663 | continue; | |
12664 | ||
12665 | anysecs = 1; | |
81b9b86e | 12666 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12667 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12668 | sprintf_vma (tmp1, vma); |
12669 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 12670 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
b6bb3468 | 12671 | if (offset + sec_length + 1 > rs->buf_size) |
c2fa21f1 | 12672 | { |
4082afcc | 12673 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12674 | warning (_("\ |
c2fa21f1 HZ |
12675 | Too many sections for read-only sections definition packet.")); |
12676 | break; | |
12677 | } | |
b6bb3468 | 12678 | xsnprintf (rs->buf + offset, rs->buf_size - offset, ":%s,%s", |
bba74b36 | 12679 | tmp1, tmp2); |
c2fa21f1 | 12680 | offset += sec_length; |
35b1e5cc SS |
12681 | } |
12682 | if (anysecs) | |
12683 | { | |
b6bb3468 PA |
12684 | putpkt (rs->buf); |
12685 | getpkt (&rs->buf, &rs->buf_size, 0); | |
35b1e5cc SS |
12686 | } |
12687 | } | |
12688 | ||
12689 | static void | |
e2d1aae3 | 12690 | remote_trace_start (struct target_ops *self) |
35b1e5cc | 12691 | { |
b6bb3468 PA |
12692 | struct remote_state *rs = get_remote_state (); |
12693 | ||
35b1e5cc | 12694 | putpkt ("QTStart"); |
b6bb3468 PA |
12695 | remote_get_noisy_reply (); |
12696 | if (*rs->buf == '\0') | |
ad91cd99 | 12697 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12698 | if (strcmp (rs->buf, "OK") != 0) |
12699 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12700 | } |
12701 | ||
12702 | static int | |
8bd200f1 | 12703 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12704 | { |
953b98d1 | 12705 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12706 | char *p = NULL; |
0df8b418 | 12707 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12708 | extern int trace_regblock_size; |
bd3eecc3 | 12709 | enum packet_result result; |
b6bb3468 | 12710 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 12711 | |
4082afcc | 12712 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12713 | return -1; |
a744cf53 | 12714 | |
5cd63fda PA |
12715 | trace_regblock_size |
12716 | = get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; | |
00bf0b85 | 12717 | |
049dc89b JK |
12718 | putpkt ("qTStatus"); |
12719 | ||
492d29ea | 12720 | TRY |
67f41397 | 12721 | { |
b6bb3468 | 12722 | p = remote_get_noisy_reply (); |
67f41397 | 12723 | } |
492d29ea | 12724 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12725 | { |
598d3636 JK |
12726 | if (ex.error != TARGET_CLOSE_ERROR) |
12727 | { | |
12728 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12729 | return -1; | |
12730 | } | |
12731 | throw_exception (ex); | |
67f41397 | 12732 | } |
492d29ea | 12733 | END_CATCH |
00bf0b85 | 12734 | |
bd3eecc3 PA |
12735 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12736 | ||
00bf0b85 | 12737 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12738 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12739 | return -1; |
35b1e5cc | 12740 | |
00bf0b85 | 12741 | /* We're working with a live target. */ |
f5911ea1 | 12742 | ts->filename = NULL; |
00bf0b85 | 12743 | |
00bf0b85 | 12744 | if (*p++ != 'T') |
b6bb3468 | 12745 | error (_("Bogus trace status reply from target: %s"), rs->buf); |
35b1e5cc | 12746 | |
84cebc4a YQ |
12747 | /* Function 'parse_trace_status' sets default value of each field of |
12748 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12749 | parse_trace_status (p, ts); |
12750 | ||
12751 | return ts->running; | |
35b1e5cc SS |
12752 | } |
12753 | ||
70221824 | 12754 | static void |
db90e85c | 12755 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12756 | struct uploaded_tp *utp) |
12757 | { | |
12758 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12759 | char *reply; |
12760 | struct bp_location *loc; | |
12761 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12762 | size_t size = get_remote_packet_size (); |
f196051f SS |
12763 | |
12764 | if (tp) | |
12765 | { | |
c1fc2657 | 12766 | tp->hit_count = 0; |
f196051f | 12767 | tp->traceframe_usage = 0; |
c1fc2657 | 12768 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
12769 | { |
12770 | /* If the tracepoint was never downloaded, don't go asking for | |
12771 | any status. */ | |
12772 | if (tp->number_on_target == 0) | |
12773 | continue; | |
bba74b36 YQ |
12774 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12775 | phex_nz (loc->address, 0)); | |
f196051f | 12776 | putpkt (rs->buf); |
b6bb3468 | 12777 | reply = remote_get_noisy_reply (); |
f196051f SS |
12778 | if (reply && *reply) |
12779 | { | |
12780 | if (*reply == 'V') | |
12781 | parse_tracepoint_status (reply + 1, bp, utp); | |
12782 | } | |
12783 | } | |
12784 | } | |
12785 | else if (utp) | |
12786 | { | |
12787 | utp->hit_count = 0; | |
12788 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12789 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12790 | phex_nz (utp->addr, 0)); | |
f196051f | 12791 | putpkt (rs->buf); |
b6bb3468 | 12792 | reply = remote_get_noisy_reply (); |
f196051f SS |
12793 | if (reply && *reply) |
12794 | { | |
12795 | if (*reply == 'V') | |
12796 | parse_tracepoint_status (reply + 1, bp, utp); | |
12797 | } | |
12798 | } | |
12799 | } | |
12800 | ||
35b1e5cc | 12801 | static void |
74499f1b | 12802 | remote_trace_stop (struct target_ops *self) |
35b1e5cc | 12803 | { |
b6bb3468 PA |
12804 | struct remote_state *rs = get_remote_state (); |
12805 | ||
35b1e5cc | 12806 | putpkt ("QTStop"); |
b6bb3468 PA |
12807 | remote_get_noisy_reply (); |
12808 | if (*rs->buf == '\0') | |
ad91cd99 | 12809 | error (_("Target does not support this command.")); |
b6bb3468 PA |
12810 | if (strcmp (rs->buf, "OK") != 0) |
12811 | error (_("Bogus reply from target: %s"), rs->buf); | |
35b1e5cc SS |
12812 | } |
12813 | ||
12814 | static int | |
bd4c6793 TT |
12815 | remote_trace_find (struct target_ops *self, |
12816 | enum trace_find_type type, int num, | |
cc5925ad | 12817 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12818 | int *tpp) |
12819 | { | |
12820 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12821 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12822 | char *p, *reply; |
12823 | int target_frameno = -1, target_tracept = -1; | |
12824 | ||
e6e4e701 PA |
12825 | /* Lookups other than by absolute frame number depend on the current |
12826 | trace selected, so make sure it is correct on the remote end | |
12827 | first. */ | |
12828 | if (type != tfind_number) | |
12829 | set_remote_traceframe (); | |
12830 | ||
35b1e5cc SS |
12831 | p = rs->buf; |
12832 | strcpy (p, "QTFrame:"); | |
12833 | p = strchr (p, '\0'); | |
12834 | switch (type) | |
12835 | { | |
12836 | case tfind_number: | |
bba74b36 | 12837 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12838 | break; |
12839 | case tfind_pc: | |
bba74b36 | 12840 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12841 | break; |
12842 | case tfind_tp: | |
bba74b36 | 12843 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12844 | break; |
12845 | case tfind_range: | |
bba74b36 YQ |
12846 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12847 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12848 | break; |
12849 | case tfind_outside: | |
bba74b36 YQ |
12850 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12851 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12852 | break; |
12853 | default: | |
9b20d036 | 12854 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12855 | } |
12856 | ||
12857 | putpkt (rs->buf); | |
b6bb3468 | 12858 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
12859 | if (*reply == '\0') |
12860 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12861 | |
12862 | while (reply && *reply) | |
12863 | switch (*reply) | |
12864 | { | |
12865 | case 'F': | |
f197e0f1 VP |
12866 | p = ++reply; |
12867 | target_frameno = (int) strtol (p, &reply, 16); | |
12868 | if (reply == p) | |
12869 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12870 | /* Don't update our remote traceframe number cache on failure |
12871 | to select a remote traceframe. */ | |
f197e0f1 VP |
12872 | if (target_frameno == -1) |
12873 | return -1; | |
35b1e5cc SS |
12874 | break; |
12875 | case 'T': | |
f197e0f1 VP |
12876 | p = ++reply; |
12877 | target_tracept = (int) strtol (p, &reply, 16); | |
12878 | if (reply == p) | |
12879 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12880 | break; |
12881 | case 'O': /* "OK"? */ | |
12882 | if (reply[1] == 'K' && reply[2] == '\0') | |
12883 | reply += 2; | |
12884 | else | |
12885 | error (_("Bogus reply from target: %s"), reply); | |
12886 | break; | |
12887 | default: | |
12888 | error (_("Bogus reply from target: %s"), reply); | |
12889 | } | |
12890 | if (tpp) | |
12891 | *tpp = target_tracept; | |
e6e4e701 | 12892 | |
262e1174 | 12893 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12894 | return target_frameno; |
12895 | } | |
12896 | ||
12897 | static int | |
4011015b TT |
12898 | remote_get_trace_state_variable_value (struct target_ops *self, |
12899 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12900 | { |
12901 | struct remote_state *rs = get_remote_state (); | |
12902 | char *reply; | |
12903 | ULONGEST uval; | |
12904 | ||
e6e4e701 PA |
12905 | set_remote_traceframe (); |
12906 | ||
bba74b36 | 12907 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 12908 | putpkt (rs->buf); |
b6bb3468 | 12909 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
12910 | if (reply && *reply) |
12911 | { | |
12912 | if (*reply == 'V') | |
12913 | { | |
12914 | unpack_varlen_hex (reply + 1, &uval); | |
12915 | *val = (LONGEST) uval; | |
12916 | return 1; | |
12917 | } | |
12918 | } | |
12919 | return 0; | |
12920 | } | |
12921 | ||
00bf0b85 | 12922 | static int |
dc3decaf | 12923 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12924 | { |
12925 | struct remote_state *rs = get_remote_state (); | |
12926 | char *p, *reply; | |
12927 | ||
12928 | p = rs->buf; | |
12929 | strcpy (p, "QTSave:"); | |
12930 | p += strlen (p); | |
12931 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12932 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12933 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12934 | *p++ = '\0'; |
12935 | putpkt (rs->buf); | |
b6bb3468 | 12936 | reply = remote_get_noisy_reply (); |
d6c5869f | 12937 | if (*reply == '\0') |
ad91cd99 PA |
12938 | error (_("Target does not support this command.")); |
12939 | if (strcmp (reply, "OK") != 0) | |
12940 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12941 | return 0; |
12942 | } | |
12943 | ||
12944 | /* This is basically a memory transfer, but needs to be its own packet | |
12945 | because we don't know how the target actually organizes its trace | |
12946 | memory, plus we want to be able to ask for as much as possible, but | |
12947 | not be unhappy if we don't get as much as we ask for. */ | |
12948 | ||
12949 | static LONGEST | |
88ee6f45 TT |
12950 | remote_get_raw_trace_data (struct target_ops *self, |
12951 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12952 | { |
12953 | struct remote_state *rs = get_remote_state (); | |
12954 | char *reply; | |
12955 | char *p; | |
12956 | int rslt; | |
12957 | ||
12958 | p = rs->buf; | |
12959 | strcpy (p, "qTBuffer:"); | |
12960 | p += strlen (p); | |
12961 | p += hexnumstr (p, offset); | |
12962 | *p++ = ','; | |
12963 | p += hexnumstr (p, len); | |
12964 | *p++ = '\0'; | |
12965 | ||
12966 | putpkt (rs->buf); | |
b6bb3468 | 12967 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
12968 | if (reply && *reply) |
12969 | { | |
12970 | /* 'l' by itself means we're at the end of the buffer and | |
12971 | there is nothing more to get. */ | |
12972 | if (*reply == 'l') | |
12973 | return 0; | |
12974 | ||
12975 | /* Convert the reply into binary. Limit the number of bytes to | |
12976 | convert according to our passed-in buffer size, rather than | |
12977 | what was returned in the packet; if the target is | |
12978 | unexpectedly generous and gives us a bigger reply than we | |
12979 | asked for, we don't want to crash. */ | |
b6bb3468 | 12980 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
12981 | return rslt; |
12982 | } | |
12983 | ||
12984 | /* Something went wrong, flag as an error. */ | |
12985 | return -1; | |
12986 | } | |
12987 | ||
35b1e5cc | 12988 | static void |
37b25738 | 12989 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12990 | { |
12991 | struct remote_state *rs = get_remote_state (); | |
12992 | ||
4082afcc | 12993 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12994 | { |
ad91cd99 PA |
12995 | char *reply; |
12996 | ||
bba74b36 | 12997 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12998 | putpkt (rs->buf); |
b6bb3468 | 12999 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13000 | if (*reply == '\0') |
33da3f1c | 13001 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13002 | if (strcmp (reply, "OK") != 0) |
13003 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13004 | } |
13005 | else if (val) | |
13006 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13007 | } |
13008 | ||
dc146f7c VP |
13009 | static int |
13010 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
13011 | { | |
13012 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 13013 | |
fe978cb0 PA |
13014 | if (info && info->priv) |
13015 | return info->priv->core; | |
dc146f7c VP |
13016 | return -1; |
13017 | } | |
13018 | ||
4daf5ac0 | 13019 | static void |
736d5b1f | 13020 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
13021 | { |
13022 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13023 | char *reply; |
4daf5ac0 | 13024 | |
bba74b36 | 13025 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 13026 | putpkt (rs->buf); |
b6bb3468 | 13027 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13028 | if (*reply == '\0') |
4daf5ac0 | 13029 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13030 | if (strcmp (reply, "OK") != 0) |
13031 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13032 | } |
13033 | ||
2098b393 | 13034 | static traceframe_info_up |
a893e81f | 13035 | remote_traceframe_info (struct target_ops *self) |
b3b9301e | 13036 | { |
b7b030ad TT |
13037 | gdb::unique_xmalloc_ptr<char> text |
13038 | = target_read_stralloc (¤t_target, TARGET_OBJECT_TRACEFRAME_INFO, | |
13039 | NULL); | |
b3b9301e | 13040 | if (text != NULL) |
b7b030ad | 13041 | return parse_traceframe_info (text.get ()); |
b3b9301e PA |
13042 | |
13043 | return NULL; | |
13044 | } | |
13045 | ||
405f8e94 SS |
13046 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13047 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13048 | if the packet is not supported, and 0 if the minimum instruction | |
13049 | length is unknown. */ | |
13050 | ||
13051 | static int | |
0e67620a | 13052 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
13053 | { |
13054 | struct remote_state *rs = get_remote_state (); | |
13055 | char *reply; | |
13056 | ||
e886a173 PA |
13057 | /* If we're not debugging a process yet, the IPA can't be |
13058 | loaded. */ | |
13059 | if (!target_has_execution) | |
13060 | return 0; | |
13061 | ||
13062 | /* Make sure the remote is pointing at the right process. */ | |
13063 | set_general_process (); | |
13064 | ||
bba74b36 | 13065 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13066 | putpkt (rs->buf); |
b6bb3468 | 13067 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13068 | if (*reply == '\0') |
13069 | return -1; | |
13070 | else | |
13071 | { | |
13072 | ULONGEST min_insn_len; | |
13073 | ||
13074 | unpack_varlen_hex (reply, &min_insn_len); | |
13075 | ||
13076 | return (int) min_insn_len; | |
13077 | } | |
13078 | } | |
13079 | ||
f6f899bf | 13080 | static void |
4da384be | 13081 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 13082 | { |
4082afcc | 13083 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13084 | { |
13085 | struct remote_state *rs = get_remote_state (); | |
13086 | char *buf = rs->buf; | |
13087 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13088 | enum packet_result result; | |
13089 | ||
13090 | gdb_assert (val >= 0 || val == -1); | |
13091 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13092 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13093 | if (val < 0) | |
13094 | { | |
13095 | *buf++ = '-'; | |
13096 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13097 | } | |
13098 | else | |
13099 | buf += hexnumstr (buf, (ULONGEST) val); | |
13100 | ||
13101 | putpkt (rs->buf); | |
b6bb3468 | 13102 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13103 | result = packet_ok (rs->buf, |
13104 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13105 | ||
13106 | if (result != PACKET_OK) | |
13107 | warning (_("Bogus reply from target: %s"), rs->buf); | |
13108 | } | |
13109 | } | |
13110 | ||
f196051f | 13111 | static int |
d9e68a2c TT |
13112 | remote_set_trace_notes (struct target_ops *self, |
13113 | const char *user, const char *notes, | |
ca623f82 | 13114 | const char *stop_notes) |
f196051f SS |
13115 | { |
13116 | struct remote_state *rs = get_remote_state (); | |
13117 | char *reply; | |
13118 | char *buf = rs->buf; | |
13119 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13120 | int nbytes; | |
13121 | ||
13122 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13123 | if (user) | |
13124 | { | |
13125 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13126 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13127 | buf += 2 * nbytes; |
13128 | *buf++ = ';'; | |
13129 | } | |
13130 | if (notes) | |
13131 | { | |
13132 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13133 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13134 | buf += 2 * nbytes; |
13135 | *buf++ = ';'; | |
13136 | } | |
13137 | if (stop_notes) | |
13138 | { | |
13139 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13140 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13141 | buf += 2 * nbytes; |
13142 | *buf++ = ';'; | |
13143 | } | |
13144 | /* Ensure the buffer is terminated. */ | |
13145 | *buf = '\0'; | |
13146 | ||
13147 | putpkt (rs->buf); | |
b6bb3468 | 13148 | reply = remote_get_noisy_reply (); |
f196051f SS |
13149 | if (*reply == '\0') |
13150 | return 0; | |
13151 | ||
13152 | if (strcmp (reply, "OK") != 0) | |
13153 | error (_("Bogus reply from target: %s"), reply); | |
13154 | ||
13155 | return 1; | |
13156 | } | |
13157 | ||
d1feda86 | 13158 | static int |
2c152180 | 13159 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 13160 | { |
4082afcc | 13161 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13162 | { |
13163 | struct remote_state *rs = get_remote_state (); | |
13164 | ||
13165 | /* If the stub supports QAgent. */ | |
bba74b36 | 13166 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13167 | putpkt (rs->buf); |
13168 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13169 | ||
13170 | if (strcmp (rs->buf, "OK") == 0) | |
13171 | { | |
13172 | use_agent = use; | |
13173 | return 1; | |
13174 | } | |
13175 | } | |
13176 | ||
13177 | return 0; | |
13178 | } | |
13179 | ||
13180 | static int | |
fe38f897 | 13181 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 13182 | { |
4082afcc | 13183 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13184 | } |
13185 | ||
9accd112 MM |
13186 | struct btrace_target_info |
13187 | { | |
13188 | /* The ptid of the traced thread. */ | |
13189 | ptid_t ptid; | |
f4abbc16 MM |
13190 | |
13191 | /* The obtained branch trace configuration. */ | |
13192 | struct btrace_config conf; | |
9accd112 MM |
13193 | }; |
13194 | ||
f4abbc16 MM |
13195 | /* Reset our idea of our target's btrace configuration. */ |
13196 | ||
13197 | static void | |
13198 | remote_btrace_reset (void) | |
13199 | { | |
13200 | struct remote_state *rs = get_remote_state (); | |
13201 | ||
13202 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13203 | } | |
13204 | ||
9accd112 MM |
13205 | /* Check whether the target supports branch tracing. */ |
13206 | ||
13207 | static int | |
043c3577 | 13208 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 13209 | { |
4082afcc | 13210 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 13211 | return 0; |
4082afcc | 13212 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
13213 | return 0; |
13214 | ||
043c3577 MM |
13215 | switch (format) |
13216 | { | |
13217 | case BTRACE_FORMAT_NONE: | |
13218 | return 0; | |
13219 | ||
13220 | case BTRACE_FORMAT_BTS: | |
13221 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
13222 | |
13223 | case BTRACE_FORMAT_PT: | |
13224 | /* The trace is decoded on the host. Even if our target supports it, | |
13225 | we still need to have libipt to decode the trace. */ | |
13226 | #if defined (HAVE_LIBIPT) | |
13227 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
13228 | #else /* !defined (HAVE_LIBIPT) */ | |
13229 | return 0; | |
13230 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
13231 | } |
13232 | ||
13233 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
13234 | } |
13235 | ||
f4abbc16 MM |
13236 | /* Synchronize the configuration with the target. */ |
13237 | ||
13238 | static void | |
13239 | btrace_sync_conf (const struct btrace_config *conf) | |
13240 | { | |
d33501a5 MM |
13241 | struct packet_config *packet; |
13242 | struct remote_state *rs; | |
13243 | char *buf, *pos, *endbuf; | |
13244 | ||
13245 | rs = get_remote_state (); | |
13246 | buf = rs->buf; | |
13247 | endbuf = buf + get_remote_packet_size (); | |
13248 | ||
13249 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13250 | if (packet_config_support (packet) == PACKET_ENABLE | |
13251 | && conf->bts.size != rs->btrace_config.bts.size) | |
13252 | { | |
13253 | pos = buf; | |
13254 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13255 | conf->bts.size); | |
13256 | ||
13257 | putpkt (buf); | |
13258 | getpkt (&buf, &rs->buf_size, 0); | |
13259 | ||
13260 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13261 | { | |
13262 | if (buf[0] == 'E' && buf[1] == '.') | |
13263 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13264 | else | |
13265 | error (_("Failed to configure the BTS buffer size.")); | |
13266 | } | |
13267 | ||
13268 | rs->btrace_config.bts.size = conf->bts.size; | |
13269 | } | |
b20a6524 MM |
13270 | |
13271 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13272 | if (packet_config_support (packet) == PACKET_ENABLE | |
13273 | && conf->pt.size != rs->btrace_config.pt.size) | |
13274 | { | |
13275 | pos = buf; | |
13276 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13277 | conf->pt.size); | |
13278 | ||
13279 | putpkt (buf); | |
13280 | getpkt (&buf, &rs->buf_size, 0); | |
13281 | ||
13282 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13283 | { | |
13284 | if (buf[0] == 'E' && buf[1] == '.') | |
13285 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13286 | else | |
13287 | error (_("Failed to configure the trace buffer size.")); | |
13288 | } | |
13289 | ||
13290 | rs->btrace_config.pt.size = conf->pt.size; | |
13291 | } | |
f4abbc16 MM |
13292 | } |
13293 | ||
13294 | /* Read the current thread's btrace configuration from the target and | |
13295 | store it into CONF. */ | |
13296 | ||
13297 | static void | |
13298 | btrace_read_config (struct btrace_config *conf) | |
13299 | { | |
b7b030ad TT |
13300 | gdb::unique_xmalloc_ptr<char> xml |
13301 | = target_read_stralloc (¤t_target, TARGET_OBJECT_BTRACE_CONF, ""); | |
f4abbc16 | 13302 | if (xml != NULL) |
b7b030ad | 13303 | parse_xml_btrace_conf (conf, xml.get ()); |
f4abbc16 MM |
13304 | } |
13305 | ||
c0272db5 TW |
13306 | /* Maybe reopen target btrace. */ |
13307 | ||
13308 | static void | |
13309 | remote_btrace_maybe_reopen (void) | |
13310 | { | |
13311 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13312 | struct thread_info *tp; |
13313 | int btrace_target_pushed = 0; | |
13314 | int warned = 0; | |
13315 | ||
5ed8105e PA |
13316 | scoped_restore_current_thread restore_thread; |
13317 | ||
c0272db5 TW |
13318 | ALL_NON_EXITED_THREADS (tp) |
13319 | { | |
13320 | set_general_thread (tp->ptid); | |
13321 | ||
13322 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13323 | btrace_read_config (&rs->btrace_config); | |
13324 | ||
13325 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13326 | continue; | |
13327 | ||
13328 | #if !defined (HAVE_LIBIPT) | |
13329 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13330 | { | |
13331 | if (!warned) | |
13332 | { | |
13333 | warned = 1; | |
13334 | warning (_("GDB does not support Intel Processor Trace. " | |
13335 | "\"record\" will not work in this session.")); | |
13336 | } | |
13337 | ||
13338 | continue; | |
13339 | } | |
13340 | #endif /* !defined (HAVE_LIBIPT) */ | |
13341 | ||
13342 | /* Push target, once, but before anything else happens. This way our | |
13343 | changes to the threads will be cleaned up by unpushing the target | |
13344 | in case btrace_read_config () throws. */ | |
13345 | if (!btrace_target_pushed) | |
13346 | { | |
13347 | btrace_target_pushed = 1; | |
13348 | record_btrace_push_target (); | |
13349 | printf_filtered (_("Target is recording using %s.\n"), | |
13350 | btrace_format_string (rs->btrace_config.format)); | |
13351 | } | |
13352 | ||
13353 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13354 | tp->btrace.target->ptid = tp->ptid; | |
13355 | tp->btrace.target->conf = rs->btrace_config; | |
13356 | } | |
c0272db5 TW |
13357 | } |
13358 | ||
9accd112 MM |
13359 | /* Enable branch tracing. */ |
13360 | ||
13361 | static struct btrace_target_info * | |
f4abbc16 MM |
13362 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
13363 | const struct btrace_config *conf) | |
9accd112 MM |
13364 | { |
13365 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13366 | struct packet_config *packet = NULL; |
9accd112 MM |
13367 | struct remote_state *rs = get_remote_state (); |
13368 | char *buf = rs->buf; | |
13369 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13370 | ||
b20a6524 MM |
13371 | switch (conf->format) |
13372 | { | |
13373 | case BTRACE_FORMAT_BTS: | |
13374 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13375 | break; | |
13376 | ||
13377 | case BTRACE_FORMAT_PT: | |
13378 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13379 | break; | |
13380 | } | |
13381 | ||
13382 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13383 | error (_("Target does not support branch tracing.")); |
13384 | ||
f4abbc16 MM |
13385 | btrace_sync_conf (conf); |
13386 | ||
9accd112 MM |
13387 | set_general_thread (ptid); |
13388 | ||
13389 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13390 | putpkt (rs->buf); | |
13391 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13392 | ||
13393 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13394 | { | |
13395 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13396 | error (_("Could not enable branch tracing for %s: %s"), | |
13397 | target_pid_to_str (ptid), rs->buf + 2); | |
13398 | else | |
13399 | error (_("Could not enable branch tracing for %s."), | |
13400 | target_pid_to_str (ptid)); | |
13401 | } | |
13402 | ||
8d749320 | 13403 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13404 | tinfo->ptid = ptid; |
13405 | ||
f4abbc16 MM |
13406 | /* If we fail to read the configuration, we lose some information, but the |
13407 | tracing itself is not impacted. */ | |
492d29ea PA |
13408 | TRY |
13409 | { | |
13410 | btrace_read_config (&tinfo->conf); | |
13411 | } | |
13412 | CATCH (err, RETURN_MASK_ERROR) | |
13413 | { | |
13414 | if (err.message != NULL) | |
13415 | warning ("%s", err.message); | |
13416 | } | |
13417 | END_CATCH | |
f4abbc16 | 13418 | |
9accd112 MM |
13419 | return tinfo; |
13420 | } | |
13421 | ||
13422 | /* Disable branch tracing. */ | |
13423 | ||
13424 | static void | |
25e95349 TT |
13425 | remote_disable_btrace (struct target_ops *self, |
13426 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13427 | { |
13428 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13429 | struct remote_state *rs = get_remote_state (); | |
13430 | char *buf = rs->buf; | |
13431 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13432 | ||
4082afcc | 13433 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13434 | error (_("Target does not support branch tracing.")); |
13435 | ||
13436 | set_general_thread (tinfo->ptid); | |
13437 | ||
13438 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13439 | putpkt (rs->buf); | |
13440 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13441 | ||
13442 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13443 | { | |
13444 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13445 | error (_("Could not disable branch tracing for %s: %s"), | |
13446 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13447 | else | |
13448 | error (_("Could not disable branch tracing for %s."), | |
13449 | target_pid_to_str (tinfo->ptid)); | |
13450 | } | |
13451 | ||
13452 | xfree (tinfo); | |
13453 | } | |
13454 | ||
13455 | /* Teardown branch tracing. */ | |
13456 | ||
13457 | static void | |
1777056d TT |
13458 | remote_teardown_btrace (struct target_ops *self, |
13459 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13460 | { |
13461 | /* We must not talk to the target during teardown. */ | |
13462 | xfree (tinfo); | |
13463 | } | |
13464 | ||
13465 | /* Read the branch trace. */ | |
13466 | ||
969c39fb | 13467 | static enum btrace_error |
39c49f83 | 13468 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 13469 | struct btrace_data *btrace, |
969c39fb | 13470 | struct btrace_target_info *tinfo, |
9accd112 MM |
13471 | enum btrace_read_type type) |
13472 | { | |
13473 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13474 | const char *annex; |
9accd112 | 13475 | |
4082afcc | 13476 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13477 | error (_("Target does not support branch tracing.")); |
13478 | ||
13479 | #if !defined(HAVE_LIBEXPAT) | |
13480 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13481 | #endif | |
13482 | ||
13483 | switch (type) | |
13484 | { | |
864089d2 | 13485 | case BTRACE_READ_ALL: |
9accd112 MM |
13486 | annex = "all"; |
13487 | break; | |
864089d2 | 13488 | case BTRACE_READ_NEW: |
9accd112 MM |
13489 | annex = "new"; |
13490 | break; | |
969c39fb MM |
13491 | case BTRACE_READ_DELTA: |
13492 | annex = "delta"; | |
13493 | break; | |
9accd112 MM |
13494 | default: |
13495 | internal_error (__FILE__, __LINE__, | |
13496 | _("Bad branch tracing read type: %u."), | |
13497 | (unsigned int) type); | |
13498 | } | |
13499 | ||
b7b030ad TT |
13500 | gdb::unique_xmalloc_ptr<char> xml |
13501 | = target_read_stralloc (¤t_target, TARGET_OBJECT_BTRACE, annex); | |
969c39fb MM |
13502 | if (xml == NULL) |
13503 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 13504 | |
b7b030ad | 13505 | parse_xml_btrace (btrace, xml.get ()); |
9accd112 | 13506 | |
969c39fb | 13507 | return BTRACE_ERR_NONE; |
9accd112 MM |
13508 | } |
13509 | ||
f4abbc16 MM |
13510 | static const struct btrace_config * |
13511 | remote_btrace_conf (struct target_ops *self, | |
13512 | const struct btrace_target_info *tinfo) | |
13513 | { | |
13514 | return &tinfo->conf; | |
13515 | } | |
13516 | ||
ced63ec0 | 13517 | static int |
5436ff03 | 13518 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 13519 | { |
4082afcc PA |
13520 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13521 | == PACKET_ENABLE); | |
ced63ec0 GB |
13522 | } |
13523 | ||
9dd130a0 TT |
13524 | /* Implementation of to_load. */ |
13525 | ||
13526 | static void | |
9cbe5fff | 13527 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
13528 | { |
13529 | generic_load (name, from_tty); | |
13530 | } | |
13531 | ||
c78fa86a GB |
13532 | /* Accepts an integer PID; returns a string representing a file that |
13533 | can be opened on the remote side to get the symbols for the child | |
13534 | process. Returns NULL if the operation is not supported. */ | |
13535 | ||
13536 | static char * | |
13537 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
13538 | { | |
b7b030ad | 13539 | static gdb::unique_xmalloc_ptr<char> filename; |
835205d0 GB |
13540 | struct inferior *inf; |
13541 | char *annex = NULL; | |
c78fa86a GB |
13542 | |
13543 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13544 | return NULL; | |
13545 | ||
835205d0 GB |
13546 | inf = find_inferior_pid (pid); |
13547 | if (inf == NULL) | |
13548 | internal_error (__FILE__, __LINE__, | |
13549 | _("not currently attached to process %d"), pid); | |
13550 | ||
13551 | if (!inf->fake_pid_p) | |
13552 | { | |
13553 | const int annex_size = 9; | |
13554 | ||
224c3ddb | 13555 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13556 | xsnprintf (annex, annex_size, "%x", pid); |
13557 | } | |
13558 | ||
c78fa86a GB |
13559 | filename = target_read_stralloc (¤t_target, |
13560 | TARGET_OBJECT_EXEC_FILE, annex); | |
13561 | ||
b7b030ad | 13562 | return filename.get (); |
c78fa86a GB |
13563 | } |
13564 | ||
750ce8d1 YQ |
13565 | /* Implement the to_can_do_single_step target_ops method. */ |
13566 | ||
13567 | static int | |
13568 | remote_can_do_single_step (struct target_ops *ops) | |
13569 | { | |
13570 | /* We can only tell whether target supports single step or not by | |
13571 | supported s and S vCont actions if the stub supports vContSupported | |
13572 | feature. If the stub doesn't support vContSupported feature, | |
13573 | we have conservatively to think target doesn't supports single | |
13574 | step. */ | |
13575 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13576 | { | |
13577 | struct remote_state *rs = get_remote_state (); | |
13578 | ||
13579 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13580 | remote_vcont_probe (rs); | |
13581 | ||
13582 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13583 | } | |
13584 | else | |
13585 | return 0; | |
13586 | } | |
13587 | ||
3a00c802 PA |
13588 | /* Implementation of the to_execution_direction method for the remote |
13589 | target. */ | |
13590 | ||
13591 | static enum exec_direction_kind | |
13592 | remote_execution_direction (struct target_ops *self) | |
13593 | { | |
13594 | struct remote_state *rs = get_remote_state (); | |
13595 | ||
13596 | return rs->last_resume_exec_dir; | |
13597 | } | |
13598 | ||
f6327dcb KB |
13599 | /* Return pointer to the thread_info struct which corresponds to |
13600 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13601 | ||
13602 | static struct thread_info * | |
13603 | remote_thread_handle_to_thread_info (struct target_ops *ops, | |
13604 | const gdb_byte *thread_handle, | |
13605 | int handle_len, | |
13606 | struct inferior *inf) | |
13607 | { | |
13608 | struct thread_info *tp; | |
13609 | ||
13610 | ALL_NON_EXITED_THREADS (tp) | |
13611 | { | |
13612 | struct private_thread_info *priv = get_private_info_thread (tp); | |
13613 | ||
13614 | if (tp->inf == inf && priv != NULL) | |
13615 | { | |
13616 | if (handle_len != priv->thread_handle->size ()) | |
13617 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), | |
13618 | handle_len, priv->thread_handle->size ()); | |
13619 | if (memcmp (thread_handle, priv->thread_handle->data (), | |
13620 | handle_len) == 0) | |
13621 | return tp; | |
13622 | } | |
13623 | } | |
13624 | ||
13625 | return NULL; | |
13626 | } | |
13627 | ||
c906108c | 13628 | static void |
fba45db2 | 13629 | init_remote_ops (void) |
c906108c | 13630 | { |
c5aa993b | 13631 | remote_ops.to_shortname = "remote"; |
c906108c | 13632 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13633 | remote_ops.to_doc = |
c906108c | 13634 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13635 | Specify the serial device it is connected to\n\ |
13636 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13637 | remote_ops.to_open = remote_open; |
13638 | remote_ops.to_close = remote_close; | |
c906108c | 13639 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13640 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13641 | remote_ops.to_resume = remote_resume; |
85ad3aaf | 13642 | remote_ops.to_commit_resume = remote_commit_resume; |
c906108c SS |
13643 | remote_ops.to_wait = remote_wait; |
13644 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13645 | remote_ops.to_store_registers = remote_store_registers; | |
13646 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13647 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13648 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13649 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13650 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13651 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13652 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13653 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13654 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13655 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13656 | remote_ops.to_watchpoint_addr_within_range = |
13657 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13658 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13659 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13660 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13661 | remote_ops.to_region_ok_for_hw_watchpoint |
13662 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13663 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13664 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13665 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13666 | remote_ops.to_load = remote_load; |
c906108c | 13667 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13668 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13669 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13670 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13671 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13672 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13673 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13674 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13675 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13676 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13677 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13678 | remote_ops.to_interrupt = remote_interrupt; |
93692b58 | 13679 | remote_ops.to_pass_ctrlc = remote_pass_ctrlc; |
4b8a223f | 13680 | remote_ops.to_xfer_partial = remote_xfer_partial; |
09c98b44 | 13681 | remote_ops.to_get_memory_xfer_limit = remote_get_memory_xfer_limit; |
96baa820 | 13682 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13683 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13684 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13685 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13686 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13687 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13688 | remote_ops.to_has_memory = default_child_has_memory; | |
13689 | remote_ops.to_has_stack = default_child_has_stack; | |
13690 | remote_ops.to_has_registers = default_child_has_registers; | |
13691 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13692 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13693 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13694 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13695 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13696 | remote_ops.to_flash_erase = remote_flash_erase; |
13697 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13698 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13699 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13700 | remote_ops.to_can_async_p = remote_can_async_p; |
13701 | remote_ops.to_is_async_p = remote_is_async_p; | |
13702 | remote_ops.to_async = remote_async; | |
65706a29 | 13703 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13704 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13705 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13706 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13707 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13708 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13709 | remote_ops.to_supports_disable_randomization |
13710 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13711 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13712 | remote_ops.to_fileio_open = remote_hostio_open; |
13713 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13714 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13715 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13716 | remote_ops.to_fileio_close = remote_hostio_close; |
13717 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13718 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13719 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13720 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13721 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13722 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13723 | remote_ops.to_trace_init = remote_trace_init; |
13724 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13725 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13726 | remote_ops.to_download_trace_state_variable |
13727 | = remote_download_trace_state_variable; | |
d248b706 KY |
13728 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13729 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13730 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13731 | remote_ops.to_trace_start = remote_trace_start; | |
13732 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13733 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13734 | remote_ops.to_trace_stop = remote_trace_stop; |
13735 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13736 | remote_ops.to_get_trace_state_variable_value |
13737 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13738 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13739 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13740 | remote_ops.to_upload_trace_state_variables |
13741 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13742 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13743 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13744 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13745 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13746 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13747 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13748 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13749 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13750 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13751 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13752 | remote_ops.to_static_tracepoint_marker_at |
13753 | = remote_static_tracepoint_marker_at; | |
13754 | remote_ops.to_static_tracepoint_markers_by_strid | |
13755 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13756 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13757 | remote_ops.to_use_agent = remote_use_agent; |
13758 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13759 | remote_ops.to_supports_btrace = remote_supports_btrace; |
13760 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
13761 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13762 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13763 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13764 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13765 | remote_ops.to_augmented_libraries_svr4_read = |
13766 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13767 | remote_ops.to_follow_fork = remote_follow_fork; |
13768 | remote_ops.to_follow_exec = remote_follow_exec; | |
13769 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13770 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13771 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13772 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13773 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13774 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
3a00c802 | 13775 | remote_ops.to_execution_direction = remote_execution_direction; |
f6327dcb KB |
13776 | remote_ops.to_thread_handle_to_thread_info = |
13777 | remote_thread_handle_to_thread_info; | |
c906108c SS |
13778 | } |
13779 | ||
13780 | /* Set up the extended remote vector by making a copy of the standard | |
13781 | remote vector and adding to it. */ | |
13782 | ||
13783 | static void | |
fba45db2 | 13784 | init_extended_remote_ops (void) |
c906108c SS |
13785 | { |
13786 | extended_remote_ops = remote_ops; | |
13787 | ||
0f71a2f6 | 13788 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13789 | extended_remote_ops.to_longname = |
c906108c | 13790 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13791 | extended_remote_ops.to_doc = |
c906108c | 13792 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13793 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13794 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13795 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13796 | extended_remote_ops.to_detach = extended_remote_detach; |
13797 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13798 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13799 | extended_remote_ops.to_supports_disable_randomization |
13800 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13801 | } |
13802 | ||
6426a772 | 13803 | static int |
6a109b6b | 13804 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13805 | { |
5d93a237 TT |
13806 | struct remote_state *rs = get_remote_state (); |
13807 | ||
3015c064 SM |
13808 | /* We don't go async if the user has explicitly prevented it with the |
13809 | "maint set target-async" command. */ | |
c6ebd6cf | 13810 | if (!target_async_permitted) |
75c99385 PA |
13811 | return 0; |
13812 | ||
23860348 | 13813 | /* We're async whenever the serial device is. */ |
5d93a237 | 13814 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13815 | } |
13816 | ||
13817 | static int | |
6a109b6b | 13818 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13819 | { |
5d93a237 TT |
13820 | struct remote_state *rs = get_remote_state (); |
13821 | ||
c6ebd6cf | 13822 | if (!target_async_permitted) |
75c99385 PA |
13823 | /* We only enable async when the user specifically asks for it. */ |
13824 | return 0; | |
13825 | ||
23860348 | 13826 | /* We're async whenever the serial device is. */ |
5d93a237 | 13827 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13828 | } |
13829 | ||
2acceee2 JM |
13830 | /* Pass the SERIAL event on and up to the client. One day this code |
13831 | will be able to delay notifying the client of an event until the | |
23860348 | 13832 | point where an entire packet has been received. */ |
2acceee2 | 13833 | |
2acceee2 JM |
13834 | static serial_event_ftype remote_async_serial_handler; |
13835 | ||
6426a772 | 13836 | static void |
819cc324 | 13837 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13838 | { |
2acceee2 JM |
13839 | /* Don't propogate error information up to the client. Instead let |
13840 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13841 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13842 | } |
13843 | ||
74531fed PA |
13844 | static void |
13845 | remote_async_inferior_event_handler (gdb_client_data data) | |
13846 | { | |
13847 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13848 | } | |
13849 | ||
2acceee2 | 13850 | static void |
6a3753b3 | 13851 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13852 | { |
5d93a237 TT |
13853 | struct remote_state *rs = get_remote_state (); |
13854 | ||
6a3753b3 | 13855 | if (enable) |
2acceee2 | 13856 | { |
88b496c3 | 13857 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13858 | |
13859 | /* If there are pending events in the stop reply queue tell the | |
13860 | event loop to process them. */ | |
13861 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13862 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13863 | /* For simplicity, below we clear the pending events token |
13864 | without remembering whether it is marked, so here we always | |
13865 | mark it. If there's actually no pending notification to | |
13866 | process, this ends up being a no-op (other than a spurious | |
13867 | event-loop wakeup). */ | |
13868 | if (target_is_non_stop_p ()) | |
13869 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13870 | } |
13871 | else | |
b7d2e916 PA |
13872 | { |
13873 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13874 | /* If the core is disabling async, it doesn't want to be |
13875 | disturbed with target events. Clear all async event sources | |
13876 | too. */ | |
b7d2e916 | 13877 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13878 | if (target_is_non_stop_p ()) |
13879 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13880 | } |
6426a772 JM |
13881 | } |
13882 | ||
65706a29 PA |
13883 | /* Implementation of the to_thread_events method. */ |
13884 | ||
13885 | static void | |
13886 | remote_thread_events (struct target_ops *ops, int enable) | |
13887 | { | |
13888 | struct remote_state *rs = get_remote_state (); | |
13889 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13890 | |
13891 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13892 | return; | |
13893 | ||
13894 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13895 | putpkt (rs->buf); | |
13896 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13897 | ||
13898 | switch (packet_ok (rs->buf, | |
13899 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13900 | { | |
13901 | case PACKET_OK: | |
13902 | if (strcmp (rs->buf, "OK") != 0) | |
13903 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13904 | break; | |
13905 | case PACKET_ERROR: | |
13906 | warning (_("Remote failure reply: %s"), rs->buf); | |
13907 | break; | |
13908 | case PACKET_UNKNOWN: | |
13909 | break; | |
13910 | } | |
13911 | } | |
13912 | ||
5a2468f5 | 13913 | static void |
981a3fb3 | 13914 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 13915 | { |
635c7e8a | 13916 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13917 | } |
13918 | ||
d471ea57 | 13919 | static void |
981a3fb3 | 13920 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 13921 | { |
37a105a1 | 13922 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13923 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13924 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13925 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13926 | |
2e783024 | 13927 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13928 | for (; list != NULL; list = list->next) |
13929 | if (strcmp (list->name, "Z-packet") == 0) | |
13930 | continue; | |
427c3a89 DJ |
13931 | else if (list->type == not_set_cmd) |
13932 | /* Alias commands are exactly like the original, except they | |
13933 | don't have the normal type. */ | |
13934 | continue; | |
13935 | else | |
37a105a1 | 13936 | { |
2e783024 | 13937 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13938 | |
112e8700 SM |
13939 | uiout->field_string ("name", list->name); |
13940 | uiout->text (": "); | |
427c3a89 | 13941 | if (list->type == show_cmd) |
f5c4fcd9 | 13942 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13943 | else |
13944 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13945 | } |
d471ea57 | 13946 | } |
5a2468f5 | 13947 | |
0f71a2f6 | 13948 | |
23860348 | 13949 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13950 | static void |
13951 | remote_new_objfile (struct objfile *objfile) | |
13952 | { | |
5d93a237 TT |
13953 | struct remote_state *rs = get_remote_state (); |
13954 | ||
13955 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13956 | remote_check_symbols (); |
dc8acb97 MS |
13957 | } |
13958 | ||
00bf0b85 SS |
13959 | /* Pull all the tracepoints defined on the target and create local |
13960 | data structures representing them. We don't want to create real | |
13961 | tracepoints yet, we don't want to mess up the user's existing | |
13962 | collection. */ | |
13963 | ||
13964 | static int | |
ab6617cc | 13965 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13966 | { |
00bf0b85 SS |
13967 | struct remote_state *rs = get_remote_state (); |
13968 | char *p; | |
d5551862 | 13969 | |
00bf0b85 SS |
13970 | /* Ask for a first packet of tracepoint definition. */ |
13971 | putpkt ("qTfP"); | |
13972 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13973 | p = rs->buf; | |
13974 | while (*p && *p != 'l') | |
d5551862 | 13975 | { |
00bf0b85 SS |
13976 | parse_tracepoint_definition (p, utpp); |
13977 | /* Ask for another packet of tracepoint definition. */ | |
13978 | putpkt ("qTsP"); | |
13979 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13980 | p = rs->buf; | |
d5551862 | 13981 | } |
00bf0b85 | 13982 | return 0; |
d5551862 SS |
13983 | } |
13984 | ||
00bf0b85 | 13985 | static int |
181e3713 TT |
13986 | remote_upload_trace_state_variables (struct target_ops *self, |
13987 | struct uploaded_tsv **utsvp) | |
d5551862 | 13988 | { |
00bf0b85 | 13989 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13990 | char *p; |
d5551862 | 13991 | |
00bf0b85 SS |
13992 | /* Ask for a first packet of variable definition. */ |
13993 | putpkt ("qTfV"); | |
d5551862 SS |
13994 | getpkt (&rs->buf, &rs->buf_size, 0); |
13995 | p = rs->buf; | |
00bf0b85 | 13996 | while (*p && *p != 'l') |
d5551862 | 13997 | { |
00bf0b85 SS |
13998 | parse_tsv_definition (p, utsvp); |
13999 | /* Ask for another packet of variable definition. */ | |
14000 | putpkt ("qTsV"); | |
d5551862 SS |
14001 | getpkt (&rs->buf, &rs->buf_size, 0); |
14002 | p = rs->buf; | |
14003 | } | |
00bf0b85 | 14004 | return 0; |
d5551862 SS |
14005 | } |
14006 | ||
c1e36e3e PA |
14007 | /* The "set/show range-stepping" show hook. */ |
14008 | ||
14009 | static void | |
14010 | show_range_stepping (struct ui_file *file, int from_tty, | |
14011 | struct cmd_list_element *c, | |
14012 | const char *value) | |
14013 | { | |
14014 | fprintf_filtered (file, | |
14015 | _("Debugger's willingness to use range stepping " | |
14016 | "is %s.\n"), value); | |
14017 | } | |
14018 | ||
14019 | /* The "set/show range-stepping" set hook. */ | |
14020 | ||
14021 | static void | |
14022 | set_range_stepping (char *ignore_args, int from_tty, | |
14023 | struct cmd_list_element *c) | |
14024 | { | |
5d93a237 TT |
14025 | struct remote_state *rs = get_remote_state (); |
14026 | ||
c1e36e3e PA |
14027 | /* Whene enabling, check whether range stepping is actually |
14028 | supported by the target, and warn if not. */ | |
14029 | if (use_range_stepping) | |
14030 | { | |
5d93a237 | 14031 | if (rs->remote_desc != NULL) |
c1e36e3e | 14032 | { |
4082afcc | 14033 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
14034 | remote_vcont_probe (rs); |
14035 | ||
4082afcc | 14036 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
14037 | && rs->supports_vCont.r) |
14038 | return; | |
14039 | } | |
14040 | ||
14041 | warning (_("Range stepping is not supported by the current target")); | |
14042 | } | |
14043 | } | |
14044 | ||
c906108c | 14045 | void |
fba45db2 | 14046 | _initialize_remote (void) |
c906108c | 14047 | { |
9a7071a8 | 14048 | struct cmd_list_element *cmd; |
6f937416 | 14049 | const char *cmd_name; |
ea9c271d | 14050 | |
0f71a2f6 | 14051 | /* architecture specific data */ |
2bc416ba | 14052 | remote_gdbarch_data_handle = |
23860348 | 14053 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
14054 | remote_g_packet_data_handle = |
14055 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14056 | |
94585166 DB |
14057 | remote_pspace_data |
14058 | = register_program_space_data_with_cleanup (NULL, | |
14059 | remote_pspace_data_cleanup); | |
14060 | ||
ea9c271d DJ |
14061 | /* Initialize the per-target state. At the moment there is only one |
14062 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
14063 | time. */ |
14064 | remote_state = new_remote_state (); | |
ea9c271d | 14065 | |
c906108c SS |
14066 | init_remote_ops (); |
14067 | add_target (&remote_ops); | |
14068 | ||
14069 | init_extended_remote_ops (); | |
14070 | add_target (&extended_remote_ops); | |
cce74817 | 14071 | |
dc8acb97 | 14072 | /* Hook into new objfile notification. */ |
06d3b283 | 14073 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
14074 | /* We're no longer interested in notification events of an inferior |
14075 | when it exits. */ | |
14076 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 14077 | |
c906108c SS |
14078 | #if 0 |
14079 | init_remote_threadtests (); | |
14080 | #endif | |
14081 | ||
722247f1 | 14082 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 14083 | /* set/show remote ... */ |
d471ea57 | 14084 | |
1bedd215 | 14085 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
14086 | Remote protocol specific variables\n\ |
14087 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14088 | the packets being used"), |
cff3e48b | 14089 | &remote_set_cmdlist, "set remote ", |
23860348 | 14090 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14091 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
14092 | Remote protocol specific variables\n\ |
14093 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14094 | the packets being used"), |
cff3e48b | 14095 | &remote_show_cmdlist, "show remote ", |
23860348 | 14096 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14097 | |
1a966eab AC |
14098 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14099 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14100 | Argument is a single section name (default: all loaded sections).\n\ |
14101 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14102 | &cmdlist); |
14103 | ||
1a966eab AC |
14104 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14105 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14106 | maintenance packet TEXT\n\ |
14107 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14108 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14109 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14110 | terminating `#' character and checksum."), |
c906108c SS |
14111 | &maintenancelist); |
14112 | ||
7915a72c AC |
14113 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14114 | Set whether to send break if interrupted."), _("\ | |
14115 | Show whether to send break if interrupted."), _("\ | |
14116 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14117 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14118 | &setlist, &showlist); |
9a7071a8 JB |
14119 | cmd_name = "remotebreak"; |
14120 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14121 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14122 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14123 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14124 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14125 | ||
14126 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14127 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14128 | _("\ | |
9a7071a8 JB |
14129 | Set interrupt sequence to remote target."), _("\ |
14130 | Show interrupt sequence to remote target."), _("\ | |
14131 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14132 | NULL, show_interrupt_sequence, | |
14133 | &remote_set_cmdlist, | |
14134 | &remote_show_cmdlist); | |
14135 | ||
14136 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14137 | &interrupt_on_connect, _("\ | |
14138 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14139 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14140 | If set, interrupt sequence is sent to remote target."), | |
14141 | NULL, NULL, | |
14142 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14143 | |
23860348 | 14144 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14145 | |
1a966eab AC |
14146 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14147 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14148 | &setlist); |
1a966eab AC |
14149 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14150 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14151 | &showlist); |
14152 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14153 | set_memory_write_packet_size, _("\ |
14154 | Set the maximum number of bytes per memory-write packet.\n\ | |
14155 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14156 | default packet size. The actual limit is further reduced\n\ | |
14157 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14158 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14159 | &remote_set_cmdlist); |
14160 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14161 | set_memory_read_packet_size, _("\ |
14162 | Set the maximum number of bytes per memory-read packet.\n\ | |
14163 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14164 | default packet size. The actual limit is further reduced\n\ | |
14165 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14166 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14167 | &remote_set_cmdlist); |
14168 | add_cmd ("memory-write-packet-size", no_class, | |
14169 | show_memory_write_packet_size, | |
1a966eab | 14170 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14171 | &remote_show_cmdlist); |
14172 | add_cmd ("memory-read-packet-size", no_class, | |
14173 | show_memory_read_packet_size, | |
1a966eab | 14174 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14175 | &remote_show_cmdlist); |
c906108c | 14176 | |
b3f42336 | 14177 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14178 | &remote_hw_watchpoint_limit, _("\ |
14179 | Set the maximum number of target hardware watchpoints."), _("\ | |
14180 | Show the maximum number of target hardware watchpoints."), _("\ | |
14181 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14182 | NULL, NULL, /* FIXME: i18n: The maximum |
14183 | number of target hardware | |
14184 | watchpoints is %s. */ | |
b3f42336 | 14185 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14186 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14187 | &remote_hw_watchpoint_length_limit, _("\ | |
14188 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14189 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14190 | Specify a negative limit for unlimited."), | |
14191 | NULL, NULL, /* FIXME: i18n: The maximum | |
14192 | length (in bytes) of a target | |
14193 | hardware watchpoint is %s. */ | |
14194 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14195 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14196 | &remote_hw_breakpoint_limit, _("\ |
14197 | Set the maximum number of target hardware breakpoints."), _("\ | |
14198 | Show the maximum number of target hardware breakpoints."), _("\ | |
14199 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14200 | NULL, NULL, /* FIXME: i18n: The maximum |
14201 | number of target hardware | |
14202 | breakpoints is %s. */ | |
b3f42336 | 14203 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14204 | |
1b493192 PA |
14205 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14206 | &remote_address_size, _("\ | |
4d28ad1e AC |
14207 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14208 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14209 | NULL, |
14210 | NULL, /* FIXME: i18n: */ | |
14211 | &setlist, &showlist); | |
c906108c | 14212 | |
ca4f7f8b PA |
14213 | init_all_packet_configs (); |
14214 | ||
444abaca | 14215 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14216 | "X", "binary-download", 1); |
0f71a2f6 | 14217 | |
444abaca | 14218 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14219 | "vCont", "verbose-resume", 0); |
506fb367 | 14220 | |
89be2091 DJ |
14221 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14222 | "QPassSignals", "pass-signals", 0); | |
14223 | ||
82075af2 JS |
14224 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14225 | "QCatchSyscalls", "catch-syscalls", 0); | |
14226 | ||
9b224c5e PA |
14227 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14228 | "QProgramSignals", "program-signals", 0); | |
14229 | ||
bc3b087d SDJ |
14230 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14231 | "QSetWorkingDir", "set-working-dir", 0); | |
14232 | ||
aefd8b33 SDJ |
14233 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14234 | "QStartupWithShell", "startup-with-shell", 0); | |
14235 | ||
0a2dde4a SDJ |
14236 | add_packet_config_cmd (&remote_protocol_packets |
14237 | [PACKET_QEnvironmentHexEncoded], | |
14238 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14239 | 0); | |
14240 | ||
14241 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14242 | "QEnvironmentReset", "environment-reset", | |
14243 | 0); | |
14244 | ||
14245 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14246 | "QEnvironmentUnset", "environment-unset", | |
14247 | 0); | |
14248 | ||
444abaca | 14249 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14250 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14251 | |
444abaca | 14252 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14253 | "P", "set-register", 1); |
d471ea57 | 14254 | |
444abaca | 14255 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14256 | "p", "fetch-register", 1); |
b96ec7ac | 14257 | |
444abaca | 14258 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14259 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14260 | |
444abaca | 14261 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14262 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14263 | |
444abaca | 14264 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14265 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14266 | |
444abaca | 14267 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14268 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14269 | |
444abaca | 14270 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14271 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14272 | |
0876f84a DJ |
14273 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14274 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14275 | |
c78fa86a GB |
14276 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14277 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14278 | ||
23181151 DJ |
14279 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14280 | "qXfer:features:read", "target-features", 0); | |
14281 | ||
cfa9d6d9 DJ |
14282 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14283 | "qXfer:libraries:read", "library-info", 0); | |
14284 | ||
2268b414 JK |
14285 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14286 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14287 | ||
fd79ecee DJ |
14288 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14289 | "qXfer:memory-map:read", "memory-map", 0); | |
14290 | ||
0e7f50da UW |
14291 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14292 | "qXfer:spu:read", "read-spu-object", 0); | |
14293 | ||
14294 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14295 | "qXfer:spu:write", "write-spu-object", 0); | |
14296 | ||
07e059b5 VP |
14297 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14298 | "qXfer:osdata:read", "osdata", 0); | |
14299 | ||
dc146f7c VP |
14300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14301 | "qXfer:threads:read", "threads", 0); | |
14302 | ||
4aa995e1 PA |
14303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14304 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14305 | ||
14306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14307 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14308 | ||
b3b9301e PA |
14309 | add_packet_config_cmd |
14310 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14311 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14312 | |
169081d0 TG |
14313 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14314 | "qXfer:uib:read", "unwind-info-block", 0); | |
14315 | ||
444abaca | 14316 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14317 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14318 | 0); |
14319 | ||
711e434b PM |
14320 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14321 | "qGetTIBAddr", "get-thread-information-block-address", | |
14322 | 0); | |
14323 | ||
40ab02ce MS |
14324 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14325 | "bc", "reverse-continue", 0); | |
14326 | ||
14327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14328 | "bs", "reverse-step", 0); | |
14329 | ||
be2a5f71 DJ |
14330 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14331 | "qSupported", "supported-packets", 0); | |
14332 | ||
08388c79 DE |
14333 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14334 | "qSearch:memory", "search-memory", 0); | |
14335 | ||
bd3eecc3 PA |
14336 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14337 | "qTStatus", "trace-status", 0); | |
14338 | ||
15a201c8 GB |
14339 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14340 | "vFile:setfs", "hostio-setfs", 0); | |
14341 | ||
a6b151f1 DJ |
14342 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14343 | "vFile:open", "hostio-open", 0); | |
14344 | ||
14345 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14346 | "vFile:pread", "hostio-pread", 0); | |
14347 | ||
14348 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14349 | "vFile:pwrite", "hostio-pwrite", 0); | |
14350 | ||
14351 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14352 | "vFile:close", "hostio-close", 0); | |
14353 | ||
14354 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14355 | "vFile:unlink", "hostio-unlink", 0); | |
14356 | ||
b9e7b9c3 UW |
14357 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14358 | "vFile:readlink", "hostio-readlink", 0); | |
14359 | ||
0a93529c GB |
14360 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14361 | "vFile:fstat", "hostio-fstat", 0); | |
14362 | ||
2d717e4f DJ |
14363 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14364 | "vAttach", "attach", 0); | |
14365 | ||
14366 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14367 | "vRun", "run", 0); | |
14368 | ||
a6f3e723 SL |
14369 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14370 | "QStartNoAckMode", "noack", 0); | |
14371 | ||
82f73884 PA |
14372 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14373 | "vKill", "kill", 0); | |
14374 | ||
0b16c5cf PA |
14375 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14376 | "qAttached", "query-attached", 0); | |
14377 | ||
782b2b07 | 14378 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14379 | "ConditionalTracepoints", |
14380 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14381 | |
14382 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14383 | "ConditionalBreakpoints", | |
14384 | "conditional-breakpoints", 0); | |
14385 | ||
d3ce09f5 SS |
14386 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14387 | "BreakpointCommands", | |
14388 | "breakpoint-commands", 0); | |
14389 | ||
7a697b8d SS |
14390 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14391 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14392 | |
409873ef SS |
14393 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14394 | "TracepointSource", "TracepointSource", 0); | |
14395 | ||
d914c394 SS |
14396 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14397 | "QAllow", "allow", 0); | |
14398 | ||
0fb4aa4b PA |
14399 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14400 | "StaticTracepoints", "static-tracepoints", 0); | |
14401 | ||
1e4d1764 YQ |
14402 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14403 | "InstallInTrace", "install-in-trace", 0); | |
14404 | ||
0fb4aa4b PA |
14405 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14406 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14407 | ||
78d85199 YQ |
14408 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14409 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14410 | ||
03583c20 UW |
14411 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14412 | "QDisableRandomization", "disable-randomization", 0); | |
14413 | ||
d1feda86 YQ |
14414 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14415 | "QAgent", "agent", 0); | |
14416 | ||
f6f899bf HAQ |
14417 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14418 | "QTBuffer:size", "trace-buffer-size", 0); | |
14419 | ||
9accd112 MM |
14420 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14421 | "Qbtrace:off", "disable-btrace", 0); | |
14422 | ||
14423 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14424 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14425 | ||
14426 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14427 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14428 | |
14429 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14430 | "qXfer:btrace", "read-btrace", 0); | |
14431 | ||
f4abbc16 MM |
14432 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14433 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14434 | ||
d33501a5 MM |
14435 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14436 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14437 | ||
73b8c1fd PA |
14438 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14439 | "multiprocess-feature", "multiprocess-feature", 0); | |
14440 | ||
f7e6eed5 PA |
14441 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14442 | "swbreak-feature", "swbreak-feature", 0); | |
14443 | ||
14444 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14445 | "hwbreak-feature", "hwbreak-feature", 0); | |
14446 | ||
89245bc0 DB |
14447 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14448 | "fork-event-feature", "fork-event-feature", 0); | |
14449 | ||
14450 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14451 | "vfork-event-feature", "vfork-event-feature", 0); | |
14452 | ||
b20a6524 MM |
14453 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14454 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14455 | ||
750ce8d1 YQ |
14456 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14457 | "vContSupported", "verbose-resume-supported", 0); | |
14458 | ||
94585166 DB |
14459 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14460 | "exec-event-feature", "exec-event-feature", 0); | |
14461 | ||
de979965 PA |
14462 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14463 | "vCtrlC", "ctrl-c", 0); | |
14464 | ||
65706a29 PA |
14465 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14466 | "QThreadEvents", "thread-events", 0); | |
14467 | ||
f2faf941 PA |
14468 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14469 | "N stop reply", "no-resumed-stop-reply", 0); | |
14470 | ||
0b736949 DB |
14471 | /* Assert that we've registered "set remote foo-packet" commands |
14472 | for all packet configs. */ | |
ca4f7f8b PA |
14473 | { |
14474 | int i; | |
14475 | ||
14476 | for (i = 0; i < PACKET_MAX; i++) | |
14477 | { | |
14478 | /* Ideally all configs would have a command associated. Some | |
14479 | still don't though. */ | |
14480 | int excepted; | |
14481 | ||
14482 | switch (i) | |
14483 | { | |
14484 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14485 | case PACKET_EnableDisableTracepoints_feature: |
14486 | case PACKET_tracenz_feature: | |
14487 | case PACKET_DisconnectedTracing_feature: | |
14488 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14489 | case PACKET_qCRC: |
14490 | /* Additions to this list need to be well justified: | |
14491 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14492 | excepted = 1; |
14493 | break; | |
14494 | default: | |
14495 | excepted = 0; | |
14496 | break; | |
14497 | } | |
14498 | ||
14499 | /* This catches both forgetting to add a config command, and | |
14500 | forgetting to remove a packet from the exception list. */ | |
14501 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14502 | } | |
14503 | } | |
14504 | ||
37a105a1 DJ |
14505 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14506 | Z sub-packet has its own set and show commands, but users may | |
14507 | have sets to this variable in their .gdbinit files (or in their | |
14508 | documentation). */ | |
e9e68a56 | 14509 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14510 | &remote_Z_packet_detect, _("\ |
14511 | Set use of remote protocol `Z' packets"), _("\ | |
14512 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14513 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14514 | packets."), |
e9e68a56 | 14515 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14516 | show_remote_protocol_Z_packet_cmd, |
14517 | /* FIXME: i18n: Use of remote protocol | |
14518 | `Z' packets is %s. */ | |
e9e68a56 | 14519 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14520 | |
a6b151f1 DJ |
14521 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14522 | Manipulate files on the remote system\n\ | |
14523 | Transfer files to and from the remote target system."), | |
14524 | &remote_cmdlist, "remote ", | |
14525 | 0 /* allow-unknown */, &cmdlist); | |
14526 | ||
14527 | add_cmd ("put", class_files, remote_put_command, | |
14528 | _("Copy a local file to the remote system."), | |
14529 | &remote_cmdlist); | |
14530 | ||
14531 | add_cmd ("get", class_files, remote_get_command, | |
14532 | _("Copy a remote file to the local system."), | |
14533 | &remote_cmdlist); | |
14534 | ||
14535 | add_cmd ("delete", class_files, remote_delete_command, | |
14536 | _("Delete a remote file."), | |
14537 | &remote_cmdlist); | |
14538 | ||
2d717e4f | 14539 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14540 | &remote_exec_file_var, _("\ |
2d717e4f | 14541 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14542 | Show the remote pathname for \"run\""), NULL, |
14543 | set_remote_exec_file, | |
14544 | show_remote_exec_file, | |
14545 | &remote_set_cmdlist, | |
14546 | &remote_show_cmdlist); | |
2d717e4f | 14547 | |
c1e36e3e PA |
14548 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14549 | &use_range_stepping, _("\ | |
14550 | Enable or disable range stepping."), _("\ | |
14551 | Show whether target-assisted range stepping is enabled."), _("\ | |
14552 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14553 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14554 | of issuing multiple single-steps. This speeds up source level\n\ | |
14555 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14556 | stepping is supported by the target. The default is on."), | |
14557 | set_range_stepping, | |
14558 | show_range_stepping, | |
14559 | &setlist, | |
14560 | &showlist); | |
14561 | ||
449092f6 CV |
14562 | /* Eventually initialize fileio. See fileio.c */ |
14563 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14564 | |
ba348170 | 14565 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14566 | special ptids with it set to != 0. */ |
ba348170 PA |
14567 | magic_null_ptid = ptid_build (42000, -1, 1); |
14568 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14569 | any_thread_ptid = ptid_build (42000, 0, 1); | |
c906108c | 14570 | } |