Commit | Line | Data |
---|---|---|
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" |
35b1e5cc | 77 | |
0df8b418 | 78 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
79 | static char *target_buf; |
80 | static long target_buf_size; | |
35b1e5cc | 81 | |
94585166 DB |
82 | /* Per-program-space data key. */ |
83 | static const struct program_space_data *remote_pspace_data; | |
84 | ||
85 | /* The variable registered as the control variable used by the | |
86 | remote exec-file commands. While the remote exec-file setting is | |
87 | per-program-space, the set/show machinery uses this as the | |
88 | location of the remote exec-file value. */ | |
89 | static char *remote_exec_file_var; | |
90 | ||
6765f3e5 DJ |
91 | /* The size to align memory write packets, when practical. The protocol |
92 | does not guarantee any alignment, and gdb will generate short | |
93 | writes and unaligned writes, but even as a best-effort attempt this | |
94 | can improve bulk transfers. For instance, if a write is misaligned | |
95 | relative to the target's data bus, the stub may need to make an extra | |
96 | round trip fetching data from the target. This doesn't make a | |
97 | huge difference, but it's easy to do, so we try to be helpful. | |
98 | ||
99 | The alignment chosen is arbitrary; usually data bus width is | |
100 | important here, not the possibly larger cache line size. */ | |
101 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
102 | ||
23860348 | 103 | /* Prototypes for local functions. */ |
6d820c5c | 104 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 105 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 106 | int forever, int *is_notif); |
6426a772 | 107 | |
a14ed312 | 108 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 109 | |
f32dbf8c MM |
110 | static void remote_prepare_to_store (struct target_ops *self, |
111 | struct regcache *regcache); | |
c906108c | 112 | |
014f9477 TT |
113 | static void remote_open_1 (const char *, int, struct target_ops *, |
114 | int extended_p); | |
c906108c | 115 | |
de90e03d | 116 | static void remote_close (struct target_ops *self); |
c906108c | 117 | |
cbb8991c DB |
118 | struct remote_state; |
119 | ||
120 | static int remote_vkill (int pid, struct remote_state *rs); | |
121 | ||
8020350c DB |
122 | static void remote_kill_k (void); |
123 | ||
136d6dae | 124 | static void remote_mourn (struct target_ops *ops); |
c906108c | 125 | |
a14ed312 | 126 | static void extended_remote_restart (void); |
c906108c | 127 | |
6d820c5c | 128 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 129 | |
a14ed312 | 130 | static int readchar (int timeout); |
c906108c | 131 | |
c33e31fd PA |
132 | static void remote_serial_write (const char *str, int len); |
133 | ||
7d85a9c0 | 134 | static void remote_kill (struct target_ops *ops); |
c906108c | 135 | |
6a109b6b | 136 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 137 | |
6a109b6b | 138 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 139 | |
6a3753b3 | 140 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 141 | |
65706a29 PA |
142 | static void remote_thread_events (struct target_ops *ops, int enable); |
143 | ||
a14ed312 | 144 | static void interrupt_query (void); |
c906108c | 145 | |
d62a8ae2 SM |
146 | static void set_general_thread (ptid_t ptid); |
147 | static void set_continue_thread (ptid_t ptid); | |
c906108c | 148 | |
a14ed312 | 149 | static void get_offsets (void); |
c906108c | 150 | |
6d820c5c DJ |
151 | static void skip_frame (void); |
152 | ||
153 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 154 | |
a14ed312 | 155 | static int hexnumlen (ULONGEST num); |
c906108c | 156 | |
a14ed312 | 157 | static void init_remote_ops (void); |
c906108c | 158 | |
a14ed312 | 159 | static void init_extended_remote_ops (void); |
c906108c | 160 | |
1eab8a48 | 161 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 162 | |
a14ed312 | 163 | static int stubhex (int ch); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumstr (char *, ULONGEST); |
c906108c | 166 | |
a14ed312 | 167 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 168 | |
a14ed312 | 169 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 170 | |
baa336ce | 171 | static void print_packet (const char *); |
c906108c | 172 | |
a14ed312 | 173 | static void compare_sections_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void packet_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 178 | |
39f77062 | 179 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 180 | |
baa336ce | 181 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 182 | |
a14ed312 | 183 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 184 | |
5a2468f5 | 185 | struct packet_config; |
5a2468f5 | 186 | |
a14ed312 | 187 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 188 | |
bb572ddd DJ |
189 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
190 | int from_tty, | |
191 | struct cmd_list_element *c, | |
192 | const char *value); | |
193 | ||
82f73884 PA |
194 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
195 | static ptid_t read_ptid (char *buf, char **obuf); | |
196 | ||
c378d69d | 197 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 198 | |
8bd200f1 TT |
199 | static int remote_get_trace_status (struct target_ops *self, |
200 | struct trace_status *ts); | |
d5551862 | 201 | |
ab6617cc TT |
202 | static int remote_upload_tracepoints (struct target_ops *self, |
203 | struct uploaded_tp **utpp); | |
00bf0b85 | 204 | |
181e3713 TT |
205 | static int remote_upload_trace_state_variables (struct target_ops *self, |
206 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 207 | |
c8d104ad PA |
208 | static void remote_query_supported (void); |
209 | ||
36d25514 | 210 | static void remote_check_symbols (void); |
c8d104ad | 211 | |
a14ed312 | 212 | void _initialize_remote (void); |
c906108c | 213 | |
74531fed | 214 | struct stop_reply; |
74531fed | 215 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 216 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 217 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 218 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
219 | static int peek_stop_reply (ptid_t ptid); |
220 | ||
cbb8991c DB |
221 | struct threads_listing_context; |
222 | static void remove_new_fork_children (struct threads_listing_context *); | |
223 | ||
74531fed | 224 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 225 | |
e3594fd1 | 226 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 227 | |
d962ef82 DJ |
228 | static int remote_read_description_p (struct target_ops *target); |
229 | ||
176a6961 | 230 | static void remote_console_output (char *msg); |
dde08ee1 | 231 | |
efcc2da7 | 232 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 233 | |
78eff0ec | 234 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 235 | |
f4abbc16 MM |
236 | static void remote_btrace_reset (void); |
237 | ||
c0272db5 TW |
238 | static void remote_btrace_maybe_reopen (void); |
239 | ||
221e1a37 PA |
240 | static int stop_reply_queue_length (void); |
241 | ||
80152258 PA |
242 | static void readahead_cache_invalidate (void); |
243 | ||
048094ac PA |
244 | static void remote_unpush_and_throw (void); |
245 | ||
a6b151f1 DJ |
246 | /* For "remote". */ |
247 | ||
248 | static struct cmd_list_element *remote_cmdlist; | |
249 | ||
bb572ddd DJ |
250 | /* For "set remote" and "show remote". */ |
251 | ||
252 | static struct cmd_list_element *remote_set_cmdlist; | |
253 | static struct cmd_list_element *remote_show_cmdlist; | |
254 | ||
d458bd84 PA |
255 | /* Stub vCont actions support. |
256 | ||
257 | Each field is a boolean flag indicating whether the stub reports | |
258 | support for the corresponding action. */ | |
259 | ||
260 | struct vCont_action_support | |
261 | { | |
262 | /* vCont;t */ | |
263 | int t; | |
c1e36e3e PA |
264 | |
265 | /* vCont;r */ | |
266 | int r; | |
750ce8d1 YQ |
267 | |
268 | /* vCont;s */ | |
269 | int s; | |
270 | ||
271 | /* vCont;S */ | |
272 | int S; | |
d458bd84 PA |
273 | }; |
274 | ||
c1e36e3e PA |
275 | /* Controls whether GDB is willing to use range stepping. */ |
276 | ||
277 | static int use_range_stepping = 1; | |
278 | ||
0d031856 TT |
279 | #define OPAQUETHREADBYTES 8 |
280 | ||
281 | /* a 64 bit opaque identifier */ | |
282 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
283 | ||
284 | /* About this many threadisds fit in a packet. */ | |
285 | ||
286 | #define MAXTHREADLISTRESULTS 32 | |
287 | ||
6f8976bf YQ |
288 | /* The max number of chars in debug output. The rest of chars are |
289 | omitted. */ | |
290 | ||
291 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
292 | ||
80152258 PA |
293 | /* Data for the vFile:pread readahead cache. */ |
294 | ||
295 | struct readahead_cache | |
296 | { | |
297 | /* The file descriptor for the file that is being cached. -1 if the | |
298 | cache is invalid. */ | |
299 | int fd; | |
300 | ||
301 | /* The offset into the file that the cache buffer corresponds | |
302 | to. */ | |
303 | ULONGEST offset; | |
304 | ||
305 | /* The buffer holding the cache contents. */ | |
306 | gdb_byte *buf; | |
307 | /* The buffer's size. We try to read as much as fits into a packet | |
308 | at a time. */ | |
309 | size_t bufsize; | |
310 | ||
311 | /* Cache hit and miss counters. */ | |
312 | ULONGEST hit_count; | |
313 | ULONGEST miss_count; | |
314 | }; | |
315 | ||
ea9c271d DJ |
316 | /* Description of the remote protocol state for the currently |
317 | connected target. This is per-target state, and independent of the | |
318 | selected architecture. */ | |
319 | ||
320 | struct remote_state | |
321 | { | |
322 | /* A buffer to use for incoming packets, and its current size. The | |
323 | buffer is grown dynamically for larger incoming packets. | |
324 | Outgoing packets may also be constructed in this buffer. | |
325 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
326 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
327 | packets. */ | |
328 | char *buf; | |
329 | long buf_size; | |
be2a5f71 | 330 | |
1e51243a PA |
331 | /* True if we're going through initial connection setup (finding out |
332 | about the remote side's threads, relocating symbols, etc.). */ | |
333 | int starting_up; | |
334 | ||
be2a5f71 DJ |
335 | /* If we negotiated packet size explicitly (and thus can bypass |
336 | heuristics for the largest packet size that will not overflow | |
337 | a buffer in the stub), this will be set to that packet size. | |
338 | Otherwise zero, meaning to use the guessed size. */ | |
339 | long explicit_packet_size; | |
2d717e4f DJ |
340 | |
341 | /* remote_wait is normally called when the target is running and | |
342 | waits for a stop reply packet. But sometimes we need to call it | |
343 | when the target is already stopped. We can send a "?" packet | |
344 | and have remote_wait read the response. Or, if we already have | |
345 | the response, we can stash it in BUF and tell remote_wait to | |
346 | skip calling getpkt. This flag is set when BUF contains a | |
347 | stop reply packet and the target is not waiting. */ | |
348 | int cached_wait_status; | |
a6f3e723 SL |
349 | |
350 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
351 | expect acks from each other. The connection is assumed to be | |
352 | reliable. */ | |
353 | int noack_mode; | |
82f73884 PA |
354 | |
355 | /* True if we're connected in extended remote mode. */ | |
356 | int extended; | |
357 | ||
e24a49d8 PA |
358 | /* True if we resumed the target and we're waiting for the target to |
359 | stop. In the mean time, we can't start another command/query. | |
360 | The remote server wouldn't be ready to process it, so we'd | |
361 | timeout waiting for a reply that would never come and eventually | |
362 | we'd close the connection. This can happen in asynchronous mode | |
363 | because we allow GDB commands while the target is running. */ | |
364 | int waiting_for_stop_reply; | |
74531fed | 365 | |
d458bd84 PA |
366 | /* The status of the stub support for the various vCont actions. */ |
367 | struct vCont_action_support supports_vCont; | |
782b2b07 | 368 | |
3a29589a DJ |
369 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
370 | responded to that. */ | |
371 | int ctrlc_pending_p; | |
5d93a237 | 372 | |
048094ac PA |
373 | /* True if we saw a Ctrl-C while reading or writing from/to the |
374 | remote descriptor. At that point it is not safe to send a remote | |
375 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
376 | process it once we're done with sending/receiving the current | |
377 | packet, which should be shortly. If however that takes too long, | |
378 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
379 | int got_ctrlc_during_io; | |
380 | ||
5d93a237 TT |
381 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
382 | remote_open knows that we don't have a file open when the program | |
383 | starts. */ | |
384 | struct serial *remote_desc; | |
47f8a51d TT |
385 | |
386 | /* These are the threads which we last sent to the remote system. The | |
387 | TID member will be -1 for all or -2 for not sent yet. */ | |
388 | ptid_t general_thread; | |
389 | ptid_t continue_thread; | |
262e1174 TT |
390 | |
391 | /* This is the traceframe which we last selected on the remote system. | |
392 | It will be -1 if no traceframe is selected. */ | |
393 | int remote_traceframe_number; | |
747dc59d TT |
394 | |
395 | char *last_pass_packet; | |
5e4a05c4 TT |
396 | |
397 | /* The last QProgramSignals packet sent to the target. We bypass | |
398 | sending a new program signals list down to the target if the new | |
399 | packet is exactly the same as the last we sent. IOW, we only let | |
400 | the target know about program signals list changes. */ | |
401 | char *last_program_signals_packet; | |
b73be471 TT |
402 | |
403 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
404 | |
405 | int last_sent_step; | |
8e88304f | 406 | |
3a00c802 PA |
407 | /* The execution direction of the last resume we got. */ |
408 | enum exec_direction_kind last_resume_exec_dir; | |
409 | ||
8e88304f TT |
410 | char *finished_object; |
411 | char *finished_annex; | |
412 | ULONGEST finished_offset; | |
b80fafe3 TT |
413 | |
414 | /* Should we try the 'ThreadInfo' query packet? | |
415 | ||
416 | This variable (NOT available to the user: auto-detect only!) | |
417 | determines whether GDB will use the new, simpler "ThreadInfo" | |
418 | query or the older, more complex syntax for thread queries. | |
419 | This is an auto-detect variable (set to true at each connect, | |
420 | and set to false when the target fails to recognize it). */ | |
421 | int use_threadinfo_query; | |
422 | int use_threadextra_query; | |
88b496c3 | 423 | |
0d031856 TT |
424 | threadref echo_nextthread; |
425 | threadref nextthread; | |
426 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
427 | |
428 | /* The state of remote notification. */ | |
429 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
430 | |
431 | /* The branch trace configuration. */ | |
432 | struct btrace_config btrace_config; | |
15a201c8 GB |
433 | |
434 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
435 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
436 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
437 | has yet been sent. */ | |
438 | int fs_pid; | |
80152258 PA |
439 | |
440 | /* A readahead cache for vFile:pread. Often, reading a binary | |
441 | involves a sequence of small reads. E.g., when parsing an ELF | |
442 | file. A readahead cache helps mostly the case of remote | |
443 | debugging on a connection with higher latency, due to the | |
444 | request/reply nature of the RSP. We only cache data for a single | |
445 | file descriptor at a time. */ | |
446 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
447 | }; |
448 | ||
dc146f7c VP |
449 | /* Private data that we'll store in (struct thread_info)->private. */ |
450 | struct private_thread_info | |
451 | { | |
452 | char *extra; | |
79efa585 | 453 | char *name; |
dc146f7c | 454 | int core; |
799a2abe PA |
455 | |
456 | /* Whether the target stopped for a breakpoint/watchpoint. */ | |
457 | enum target_stop_reason stop_reason; | |
458 | ||
459 | /* This is set to the data address of the access causing the target | |
460 | to stop for a watchpoint. */ | |
461 | CORE_ADDR watch_data_address; | |
85ad3aaf PA |
462 | |
463 | /* Fields used by the vCont action coalescing implemented in | |
464 | remote_resume / remote_commit_resume. remote_resume stores each | |
465 | thread's last resume request in these fields, so that a later | |
466 | remote_commit_resume knows which is the proper action for this | |
467 | thread to include in the vCont packet. */ | |
468 | ||
469 | /* True if the last target_resume call for this thread was a step | |
470 | request, false if a continue request. */ | |
471 | int last_resume_step; | |
472 | ||
473 | /* The signal specified in the last target_resume call for this | |
474 | thread. */ | |
475 | enum gdb_signal last_resume_sig; | |
476 | ||
477 | /* Whether this thread was already vCont-resumed on the remote | |
478 | side. */ | |
479 | int vcont_resumed; | |
dc146f7c VP |
480 | }; |
481 | ||
482 | static void | |
483 | free_private_thread_info (struct private_thread_info *info) | |
484 | { | |
485 | xfree (info->extra); | |
79efa585 | 486 | xfree (info->name); |
dc146f7c VP |
487 | xfree (info); |
488 | } | |
489 | ||
ea9c271d DJ |
490 | /* This data could be associated with a target, but we do not always |
491 | have access to the current target when we need it, so for now it is | |
492 | static. This will be fine for as long as only one target is in use | |
493 | at a time. */ | |
cf792862 | 494 | static struct remote_state *remote_state; |
ea9c271d DJ |
495 | |
496 | static struct remote_state * | |
0b83947e | 497 | get_remote_state_raw (void) |
ea9c271d | 498 | { |
cf792862 TT |
499 | return remote_state; |
500 | } | |
501 | ||
502 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
503 | return it. */ | |
504 | ||
505 | static struct remote_state * | |
506 | new_remote_state (void) | |
507 | { | |
508 | struct remote_state *result = XCNEW (struct remote_state); | |
509 | ||
510 | /* The default buffer size is unimportant; it will be expanded | |
511 | whenever a larger buffer is needed. */ | |
512 | result->buf_size = 400; | |
224c3ddb | 513 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 514 | result->remote_traceframe_number = -1; |
b73be471 | 515 | result->last_sent_signal = GDB_SIGNAL_0; |
3a00c802 | 516 | result->last_resume_exec_dir = EXEC_FORWARD; |
15a201c8 | 517 | result->fs_pid = -1; |
cf792862 TT |
518 | |
519 | return result; | |
ea9c271d DJ |
520 | } |
521 | ||
522 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 523 | |
ad10f812 AC |
524 | struct packet_reg |
525 | { | |
526 | long offset; /* Offset into G packet. */ | |
527 | long regnum; /* GDB's internal register number. */ | |
528 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 529 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 530 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 531 | at present. */ |
f5656ead | 532 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 533 | at present. */ |
ad10f812 AC |
534 | }; |
535 | ||
ea9c271d | 536 | struct remote_arch_state |
d01949b6 | 537 | { |
ad10f812 AC |
538 | /* Description of the remote protocol registers. */ |
539 | long sizeof_g_packet; | |
b323314b AC |
540 | |
541 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 542 | (making an array gdbarch_num_regs in size). */ |
b323314b | 543 | struct packet_reg *regs; |
ad10f812 | 544 | |
d01949b6 AC |
545 | /* This is the size (in chars) of the first response to the ``g'' |
546 | packet. It is used as a heuristic when determining the maximum | |
547 | size of memory-read and memory-write packets. A target will | |
548 | typically only reserve a buffer large enough to hold the ``g'' | |
549 | packet. The size does not include packet overhead (headers and | |
23860348 | 550 | trailers). */ |
d01949b6 AC |
551 | long actual_register_packet_size; |
552 | ||
553 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 554 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
555 | long remote_packet_size; |
556 | }; | |
557 | ||
35b1e5cc SS |
558 | /* Utility: generate error from an incoming stub packet. */ |
559 | static void | |
560 | trace_error (char *buf) | |
561 | { | |
562 | if (*buf++ != 'E') | |
563 | return; /* not an error msg */ | |
564 | switch (*buf) | |
565 | { | |
566 | case '1': /* malformed packet error */ | |
567 | if (*++buf == '0') /* general case: */ | |
568 | error (_("remote.c: error in outgoing packet.")); | |
569 | else | |
570 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
571 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
572 | default: |
573 | error (_("Target returns error code '%s'."), buf); | |
574 | } | |
575 | } | |
576 | ||
577 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
578 | static char * | |
579 | remote_get_noisy_reply (char **buf_p, | |
580 | long *sizeof_buf) | |
581 | { | |
582 | do /* Loop on reply from remote stub. */ | |
583 | { | |
584 | char *buf; | |
a744cf53 | 585 | |
0df8b418 | 586 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
587 | getpkt (buf_p, sizeof_buf, 0); |
588 | buf = *buf_p; | |
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; | |
595 | char *p, *pp; | |
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 | ||
bba74b36 | 641 | xsnprintf (buf, *sizeof_buf, "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 DJ |
656 | static struct remote_arch_state * |
657 | get_remote_arch_state (void) | |
d01949b6 | 658 | { |
17d8546e | 659 | gdb_assert (target_gdbarch () != NULL); |
19ba03f4 SM |
660 | return ((struct remote_arch_state *) |
661 | gdbarch_data (target_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. */ | |
674 | get_remote_arch_state (); | |
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 | struct packet_reg *regs; |
807 | struct cleanup *old_chain; | |
808 | ||
809 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
810 | ||
224c3ddb | 811 | regs = XCNEWVEC (struct packet_reg, gdbarch_num_regs (gdbarch)); |
c21236dc PA |
812 | old_chain = make_cleanup (xfree, regs); |
813 | ||
54887903 | 814 | map_regcache_remote_table (gdbarch, regs); |
c21236dc PA |
815 | |
816 | *pnum = regs[regnum].pnum; | |
817 | *poffset = regs[regnum].offset; | |
818 | ||
819 | do_cleanups (old_chain); | |
820 | ||
821 | return *pnum != -1; | |
822 | } | |
823 | ||
824 | static void * | |
825 | init_remote_state (struct gdbarch *gdbarch) | |
826 | { | |
827 | struct remote_state *rs = get_remote_state_raw (); | |
828 | struct remote_arch_state *rsa; | |
829 | ||
830 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
831 | ||
832 | /* Use the architecture to build a regnum<->pnum table, which will be | |
833 | 1:1 unless a feature set specifies otherwise. */ | |
834 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
835 | gdbarch_num_regs (gdbarch), | |
836 | struct packet_reg); | |
837 | ||
74ca34ce DJ |
838 | /* Record the maximum possible size of the g packet - it may turn out |
839 | to be smaller. */ | |
c21236dc | 840 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 841 | |
0df8b418 | 842 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
843 | remote stubs have a hardwired buffer size of 400 bytes |
844 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
845 | as the maximum packet-size to ensure that the packet and an extra | |
846 | NUL character can always fit in the buffer. This stops GDB | |
847 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
848 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
849 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 850 | |
ea9c271d DJ |
851 | /* This one is filled in when a ``g'' packet is received. */ |
852 | rsa->actual_register_packet_size = 0; | |
853 | ||
854 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
855 | default, adjust the size accordingly. Remember that each byte is |
856 | encoded as two characters. 32 is the overhead for the packet | |
857 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 858 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 859 | little. */ |
ea9c271d DJ |
860 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
861 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 862 | |
ea9c271d DJ |
863 | /* Make sure that the packet buffer is plenty big enough for |
864 | this architecture. */ | |
865 | if (rs->buf_size < rsa->remote_packet_size) | |
866 | { | |
867 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 868 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 869 | } |
6d820c5c | 870 | |
ea9c271d DJ |
871 | return rsa; |
872 | } | |
873 | ||
874 | /* Return the current allowed size of a remote packet. This is | |
875 | inferred from the current architecture, and should be used to | |
876 | limit the length of outgoing packets. */ | |
877 | static long | |
878 | get_remote_packet_size (void) | |
879 | { | |
be2a5f71 | 880 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
881 | struct remote_arch_state *rsa = get_remote_arch_state (); |
882 | ||
be2a5f71 DJ |
883 | if (rs->explicit_packet_size) |
884 | return rs->explicit_packet_size; | |
885 | ||
ea9c271d | 886 | return rsa->remote_packet_size; |
d01949b6 AC |
887 | } |
888 | ||
ad10f812 | 889 | static struct packet_reg * |
ea9c271d | 890 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 891 | { |
f5656ead | 892 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
893 | return NULL; |
894 | else | |
ad10f812 | 895 | { |
ea9c271d | 896 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 897 | |
b323314b AC |
898 | gdb_assert (r->regnum == regnum); |
899 | return r; | |
ad10f812 | 900 | } |
ad10f812 AC |
901 | } |
902 | ||
903 | static struct packet_reg * | |
ea9c271d | 904 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 905 | { |
b323314b | 906 | int i; |
a744cf53 | 907 | |
f5656ead | 908 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 909 | { |
ea9c271d | 910 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 911 | |
b323314b AC |
912 | if (r->pnum == pnum) |
913 | return r; | |
ad10f812 AC |
914 | } |
915 | return NULL; | |
d01949b6 AC |
916 | } |
917 | ||
c906108c SS |
918 | static struct target_ops remote_ops; |
919 | ||
920 | static struct target_ops extended_remote_ops; | |
921 | ||
6426a772 JM |
922 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
923 | ``forever'' still use the normal timeout mechanism. This is | |
924 | currently used by the ASYNC code to guarentee that target reads | |
925 | during the initial connect always time-out. Once getpkt has been | |
926 | modified to return a timeout indication and, in turn | |
927 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 928 | this can go away. */ |
6426a772 JM |
929 | static int wait_forever_enabled_p = 1; |
930 | ||
9a7071a8 JB |
931 | /* Allow the user to specify what sequence to send to the remote |
932 | when he requests a program interruption: Although ^C is usually | |
933 | what remote systems expect (this is the default, here), it is | |
934 | sometimes preferable to send a break. On other systems such | |
935 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
936 | is required in order to interrupt the execution. */ | |
937 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
938 | const char interrupt_sequence_break[] = "BREAK"; | |
939 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 940 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
941 | { |
942 | interrupt_sequence_control_c, | |
943 | interrupt_sequence_break, | |
944 | interrupt_sequence_break_g, | |
945 | NULL | |
946 | }; | |
947 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
948 | ||
949 | static void | |
950 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
951 | struct cmd_list_element *c, | |
952 | const char *value) | |
953 | { | |
954 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
955 | fprintf_filtered (file, | |
956 | _("Send the ASCII ETX character (Ctrl-c) " | |
957 | "to the remote target to interrupt the " | |
958 | "execution of the program.\n")); | |
959 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
960 | fprintf_filtered (file, | |
961 | _("send a break signal to the remote target " | |
962 | "to interrupt the execution of the program.\n")); | |
963 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
964 | fprintf_filtered (file, | |
965 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
966 | "the remote target to interrupt the execution " | |
967 | "of Linux kernel.\n")); | |
968 | else | |
969 | internal_error (__FILE__, __LINE__, | |
970 | _("Invalid value for interrupt_sequence_mode: %s."), | |
971 | interrupt_sequence_mode); | |
972 | } | |
6426a772 | 973 | |
9a7071a8 JB |
974 | /* This boolean variable specifies whether interrupt_sequence is sent |
975 | to the remote target when gdb connects to it. | |
976 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
977 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
978 | static int interrupt_on_connect = 0; | |
c906108c | 979 | |
9a7071a8 JB |
980 | /* This variable is used to implement the "set/show remotebreak" commands. |
981 | Since these commands are now deprecated in favor of "set/show remote | |
982 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
983 | static int remote_break; |
984 | ||
9a7071a8 JB |
985 | static void |
986 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
987 | { | |
988 | if (remote_break) | |
989 | interrupt_sequence_mode = interrupt_sequence_break; | |
990 | else | |
991 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
992 | } | |
993 | ||
994 | static void | |
995 | show_remotebreak (struct ui_file *file, int from_tty, | |
996 | struct cmd_list_element *c, | |
997 | const char *value) | |
998 | { | |
999 | } | |
1000 | ||
c906108c SS |
1001 | /* This variable sets the number of bits in an address that are to be |
1002 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1003 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1004 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1005 | initial implementation of remote.c restricted the address sent in | |
1006 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1007 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1008 | address was never sent. Since fixing this bug may cause a break in | |
1009 | some remote targets this variable is principly provided to | |
23860348 | 1010 | facilitate backward compatibility. */ |
c906108c | 1011 | |
883b9c6c | 1012 | static unsigned int remote_address_size; |
c906108c | 1013 | |
75c99385 PA |
1014 | /* Temporary to track who currently owns the terminal. See |
1015 | remote_terminal_* for more details. */ | |
6426a772 JM |
1016 | |
1017 | static int remote_async_terminal_ours_p; | |
1018 | ||
11cf8741 | 1019 | \f |
11cf8741 | 1020 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1021 | memory read/write packet. MIN (rsa->remote_packet_size, |
1022 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1023 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1024 | (speed up transfers). The variables ``preferred_*'' (the user |
1025 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1026 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1027 | |
1028 | struct memory_packet_config | |
1029 | { | |
a121b7c1 | 1030 | const char *name; |
11cf8741 JM |
1031 | long size; |
1032 | int fixed_p; | |
1033 | }; | |
1034 | ||
a5c0808e PA |
1035 | /* The default max memory-write-packet-size. The 16k is historical. |
1036 | (It came from older GDB's using alloca for buffers and the | |
1037 | knowledge (folklore?) that some hosts don't cope very well with | |
1038 | large alloca calls.) */ | |
1039 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1040 | ||
1041 | /* The minimum remote packet size for memory transfers. Ensures we | |
1042 | can write at least one byte. */ | |
1043 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1044 | ||
11cf8741 JM |
1045 | /* Compute the current size of a read/write packet. Since this makes |
1046 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1047 | ||
1048 | static long | |
1049 | get_memory_packet_size (struct memory_packet_config *config) | |
1050 | { | |
d01949b6 | 1051 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1052 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1053 | ||
11cf8741 JM |
1054 | long what_they_get; |
1055 | if (config->fixed_p) | |
1056 | { | |
1057 | if (config->size <= 0) | |
a5c0808e | 1058 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1059 | else |
1060 | what_they_get = config->size; | |
1061 | } | |
1062 | else | |
1063 | { | |
ea9c271d | 1064 | what_they_get = get_remote_packet_size (); |
23860348 | 1065 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1066 | if (config->size > 0 |
1067 | && what_they_get > config->size) | |
1068 | what_they_get = config->size; | |
be2a5f71 DJ |
1069 | |
1070 | /* Limit it to the size of the targets ``g'' response unless we have | |
1071 | permission from the stub to use a larger packet size. */ | |
1072 | if (rs->explicit_packet_size == 0 | |
1073 | && rsa->actual_register_packet_size > 0 | |
1074 | && what_they_get > rsa->actual_register_packet_size) | |
1075 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1076 | } |
a5c0808e PA |
1077 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1078 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1079 | |
1080 | /* Make sure there is room in the global buffer for this packet | |
1081 | (including its trailing NUL byte). */ | |
1082 | if (rs->buf_size < what_they_get + 1) | |
1083 | { | |
1084 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1085 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1086 | } |
1087 | ||
11cf8741 JM |
1088 | return what_they_get; |
1089 | } | |
1090 | ||
0df8b418 | 1091 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1092 | something really big then do a sanity check. */ |
11cf8741 JM |
1093 | |
1094 | static void | |
1095 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1096 | { | |
1097 | int fixed_p = config->fixed_p; | |
1098 | long size = config->size; | |
a744cf53 | 1099 | |
11cf8741 | 1100 | if (args == NULL) |
8a3fe4f8 | 1101 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1102 | else if (strcmp (args, "hard") == 0 |
1103 | || strcmp (args, "fixed") == 0) | |
1104 | fixed_p = 1; | |
1105 | else if (strcmp (args, "soft") == 0 | |
1106 | || strcmp (args, "limit") == 0) | |
1107 | fixed_p = 0; | |
1108 | else | |
1109 | { | |
1110 | char *end; | |
a744cf53 | 1111 | |
11cf8741 JM |
1112 | size = strtoul (args, &end, 0); |
1113 | if (args == end) | |
8a3fe4f8 | 1114 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1115 | |
1116 | /* Instead of explicitly capping the size of a packet to or | |
1117 | disallowing it, the user is allowed to set the size to | |
1118 | something arbitrarily large. */ | |
11cf8741 | 1119 | } |
a5c0808e PA |
1120 | |
1121 | /* So that the query shows the correct value. */ | |
1122 | if (size <= 0) | |
1123 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1124 | ||
23860348 | 1125 | /* Extra checks? */ |
11cf8741 JM |
1126 | if (fixed_p && !config->fixed_p) |
1127 | { | |
e2e0b3e5 AC |
1128 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1129 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1130 | config->name, size)) |
8a3fe4f8 | 1131 | error (_("Packet size not changed.")); |
11cf8741 | 1132 | } |
23860348 | 1133 | /* Update the config. */ |
11cf8741 JM |
1134 | config->fixed_p = fixed_p; |
1135 | config->size = size; | |
1136 | } | |
1137 | ||
1138 | static void | |
1139 | show_memory_packet_size (struct memory_packet_config *config) | |
1140 | { | |
a3f17187 | 1141 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1142 | if (config->fixed_p) |
a3f17187 | 1143 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1144 | get_memory_packet_size (config)); |
1145 | else | |
a3f17187 | 1146 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1147 | get_memory_packet_size (config)); |
1148 | } | |
1149 | ||
1150 | static struct memory_packet_config memory_write_packet_config = | |
1151 | { | |
1152 | "memory-write-packet-size", | |
1153 | }; | |
1154 | ||
1155 | static void | |
1156 | set_memory_write_packet_size (char *args, int from_tty) | |
1157 | { | |
1158 | set_memory_packet_size (args, &memory_write_packet_config); | |
1159 | } | |
1160 | ||
1161 | static void | |
1162 | show_memory_write_packet_size (char *args, int from_tty) | |
1163 | { | |
1164 | show_memory_packet_size (&memory_write_packet_config); | |
1165 | } | |
1166 | ||
1167 | static long | |
1168 | get_memory_write_packet_size (void) | |
1169 | { | |
1170 | return get_memory_packet_size (&memory_write_packet_config); | |
1171 | } | |
1172 | ||
1173 | static struct memory_packet_config memory_read_packet_config = | |
1174 | { | |
1175 | "memory-read-packet-size", | |
1176 | }; | |
1177 | ||
1178 | static void | |
1179 | set_memory_read_packet_size (char *args, int from_tty) | |
1180 | { | |
1181 | set_memory_packet_size (args, &memory_read_packet_config); | |
1182 | } | |
1183 | ||
1184 | static void | |
1185 | show_memory_read_packet_size (char *args, int from_tty) | |
1186 | { | |
1187 | show_memory_packet_size (&memory_read_packet_config); | |
1188 | } | |
1189 | ||
1190 | static long | |
1191 | get_memory_read_packet_size (void) | |
1192 | { | |
1193 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1194 | |
11cf8741 JM |
1195 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1196 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1197 | increased beyond this. */ |
1198 | if (size > get_remote_packet_size ()) | |
1199 | size = get_remote_packet_size (); | |
11cf8741 JM |
1200 | return size; |
1201 | } | |
1202 | ||
11cf8741 | 1203 | \f |
5a2468f5 | 1204 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1205 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1206 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1207 | |
1208 | enum packet_support | |
1209 | { | |
1210 | PACKET_SUPPORT_UNKNOWN = 0, | |
1211 | PACKET_ENABLE, | |
1212 | PACKET_DISABLE | |
1213 | }; | |
1214 | ||
5a2468f5 JM |
1215 | struct packet_config |
1216 | { | |
bb572ddd DJ |
1217 | const char *name; |
1218 | const char *title; | |
4082afcc PA |
1219 | |
1220 | /* If auto, GDB auto-detects support for this packet or feature, | |
1221 | either through qSupported, or by trying the packet and looking | |
1222 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1223 | packet. If false, the packet is disabled. Configs that don't |
1224 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1225 | enum auto_boolean detect; |
4082afcc PA |
1226 | |
1227 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1228 | enum packet_support support; |
1229 | }; | |
1230 | ||
d471ea57 | 1231 | /* Analyze a packet's return value and update the packet config |
23860348 | 1232 | accordingly. */ |
d471ea57 AC |
1233 | |
1234 | enum packet_result | |
1235 | { | |
1236 | PACKET_ERROR, | |
1237 | PACKET_OK, | |
1238 | PACKET_UNKNOWN | |
1239 | }; | |
1240 | ||
4082afcc PA |
1241 | static enum packet_support packet_config_support (struct packet_config *config); |
1242 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1243 | |
1244 | static void | |
fba45db2 | 1245 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1246 | { |
a121b7c1 | 1247 | const char *support = "internal-error"; |
a744cf53 | 1248 | |
4082afcc | 1249 | switch (packet_config_support (config)) |
5a2468f5 JM |
1250 | { |
1251 | case PACKET_ENABLE: | |
1252 | support = "enabled"; | |
1253 | break; | |
1254 | case PACKET_DISABLE: | |
1255 | support = "disabled"; | |
1256 | break; | |
1257 | case PACKET_SUPPORT_UNKNOWN: | |
1258 | support = "unknown"; | |
1259 | break; | |
1260 | } | |
1261 | switch (config->detect) | |
1262 | { | |
7f19b9a2 | 1263 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1264 | printf_filtered (_("Support for the `%s' packet " |
1265 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1266 | config->name, support); |
5a2468f5 | 1267 | break; |
7f19b9a2 AC |
1268 | case AUTO_BOOLEAN_TRUE: |
1269 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1270 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1271 | config->name, support); | |
8e248173 | 1272 | break; |
5a2468f5 JM |
1273 | } |
1274 | } | |
1275 | ||
1276 | static void | |
bb572ddd DJ |
1277 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1278 | const char *title, int legacy) | |
d471ea57 | 1279 | { |
5a2468f5 JM |
1280 | char *set_doc; |
1281 | char *show_doc; | |
d471ea57 | 1282 | char *cmd_name; |
3ed07be4 | 1283 | |
5a2468f5 JM |
1284 | config->name = name; |
1285 | config->title = title; | |
b435e160 AC |
1286 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1287 | name, title); | |
3e43a32a MS |
1288 | show_doc = xstrprintf ("Show current use of remote " |
1289 | "protocol `%s' (%s) packet", | |
b435e160 | 1290 | name, title); |
d471ea57 | 1291 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1292 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1293 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1294 | &config->detect, set_doc, |
1295 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1296 | NULL, |
bb572ddd DJ |
1297 | show_remote_protocol_packet_cmd, |
1298 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1299 | /* The command code copies the documentation strings. */ |
1300 | xfree (set_doc); | |
1301 | xfree (show_doc); | |
23860348 | 1302 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1303 | if (legacy) |
1304 | { | |
1305 | char *legacy_name; | |
a744cf53 | 1306 | |
b435e160 | 1307 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1308 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1309 | &remote_set_cmdlist); |
d471ea57 | 1310 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1311 | &remote_show_cmdlist); |
d471ea57 | 1312 | } |
5a2468f5 JM |
1313 | } |
1314 | ||
d471ea57 | 1315 | static enum packet_result |
a76d924d | 1316 | packet_check_result (const char *buf) |
5a2468f5 | 1317 | { |
d471ea57 | 1318 | if (buf[0] != '\0') |
5a2468f5 | 1319 | { |
d471ea57 | 1320 | /* The stub recognized the packet request. Check that the |
23860348 | 1321 | operation succeeded. */ |
a76d924d DJ |
1322 | if (buf[0] == 'E' |
1323 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1324 | && buf[3] == '\0') | |
1325 | /* "Enn" - definitly an error. */ | |
1326 | return PACKET_ERROR; | |
1327 | ||
1328 | /* Always treat "E." as an error. This will be used for | |
1329 | more verbose error messages, such as E.memtypes. */ | |
1330 | if (buf[0] == 'E' && buf[1] == '.') | |
1331 | return PACKET_ERROR; | |
1332 | ||
1333 | /* The packet may or may not be OK. Just assume it is. */ | |
1334 | return PACKET_OK; | |
1335 | } | |
1336 | else | |
1337 | /* The stub does not support the packet. */ | |
1338 | return PACKET_UNKNOWN; | |
1339 | } | |
1340 | ||
1341 | static enum packet_result | |
1342 | packet_ok (const char *buf, struct packet_config *config) | |
1343 | { | |
1344 | enum packet_result result; | |
1345 | ||
4082afcc PA |
1346 | if (config->detect != AUTO_BOOLEAN_TRUE |
1347 | && config->support == PACKET_DISABLE) | |
1348 | internal_error (__FILE__, __LINE__, | |
1349 | _("packet_ok: attempt to use a disabled packet")); | |
1350 | ||
a76d924d DJ |
1351 | result = packet_check_result (buf); |
1352 | switch (result) | |
1353 | { | |
1354 | case PACKET_OK: | |
1355 | case PACKET_ERROR: | |
1356 | /* The stub recognized the packet request. */ | |
4082afcc | 1357 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1358 | { |
d471ea57 AC |
1359 | if (remote_debug) |
1360 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1361 | "Packet %s (%s) is supported\n", |
1362 | config->name, config->title); | |
d471ea57 | 1363 | config->support = PACKET_ENABLE; |
d471ea57 | 1364 | } |
a76d924d DJ |
1365 | break; |
1366 | case PACKET_UNKNOWN: | |
23860348 | 1367 | /* The stub does not support the packet. */ |
4082afcc PA |
1368 | if (config->detect == AUTO_BOOLEAN_AUTO |
1369 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1370 | { |
4082afcc PA |
1371 | /* If the stub previously indicated that the packet was |
1372 | supported then there is a protocol error. */ | |
1373 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1374 | config->name, config->title); | |
1375 | } | |
1376 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1377 | { | |
1378 | /* The user set it wrong. */ | |
1379 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1380 | config->name, config->title); | |
d471ea57 | 1381 | } |
4082afcc PA |
1382 | |
1383 | if (remote_debug) | |
1384 | fprintf_unfiltered (gdb_stdlog, | |
1385 | "Packet %s (%s) is NOT supported\n", | |
1386 | config->name, config->title); | |
1387 | config->support = PACKET_DISABLE; | |
a76d924d | 1388 | break; |
5a2468f5 | 1389 | } |
a76d924d DJ |
1390 | |
1391 | return result; | |
5a2468f5 JM |
1392 | } |
1393 | ||
444abaca DJ |
1394 | enum { |
1395 | PACKET_vCont = 0, | |
1396 | PACKET_X, | |
1397 | PACKET_qSymbol, | |
1398 | PACKET_P, | |
1399 | PACKET_p, | |
1400 | PACKET_Z0, | |
1401 | PACKET_Z1, | |
1402 | PACKET_Z2, | |
1403 | PACKET_Z3, | |
1404 | PACKET_Z4, | |
15a201c8 | 1405 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1406 | PACKET_vFile_open, |
1407 | PACKET_vFile_pread, | |
1408 | PACKET_vFile_pwrite, | |
1409 | PACKET_vFile_close, | |
1410 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1411 | PACKET_vFile_readlink, |
0a93529c | 1412 | PACKET_vFile_fstat, |
0876f84a | 1413 | PACKET_qXfer_auxv, |
23181151 | 1414 | PACKET_qXfer_features, |
c78fa86a | 1415 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1416 | PACKET_qXfer_libraries, |
2268b414 | 1417 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1418 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1419 | PACKET_qXfer_spu_read, |
1420 | PACKET_qXfer_spu_write, | |
07e059b5 | 1421 | PACKET_qXfer_osdata, |
dc146f7c | 1422 | PACKET_qXfer_threads, |
0fb4aa4b | 1423 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1424 | PACKET_qXfer_traceframe_info, |
169081d0 | 1425 | PACKET_qXfer_uib, |
711e434b | 1426 | PACKET_qGetTIBAddr, |
444abaca | 1427 | PACKET_qGetTLSAddr, |
be2a5f71 | 1428 | PACKET_qSupported, |
bd3eecc3 | 1429 | PACKET_qTStatus, |
89be2091 | 1430 | PACKET_QPassSignals, |
82075af2 | 1431 | PACKET_QCatchSyscalls, |
9b224c5e | 1432 | PACKET_QProgramSignals, |
aefd8b33 | 1433 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1434 | PACKET_QEnvironmentHexEncoded, |
1435 | PACKET_QEnvironmentReset, | |
1436 | PACKET_QEnvironmentUnset, | |
936d2992 | 1437 | PACKET_qCRC, |
08388c79 | 1438 | PACKET_qSearch_memory, |
2d717e4f DJ |
1439 | PACKET_vAttach, |
1440 | PACKET_vRun, | |
a6f3e723 | 1441 | PACKET_QStartNoAckMode, |
82f73884 | 1442 | PACKET_vKill, |
4aa995e1 PA |
1443 | PACKET_qXfer_siginfo_read, |
1444 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1445 | PACKET_qAttached, |
4082afcc PA |
1446 | |
1447 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1448 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1449 | |
1450 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1451 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1452 | |
1453 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1454 | PACKET_BreakpointCommands, |
4082afcc PA |
1455 | |
1456 | /* Support for fast tracepoints. */ | |
7a697b8d | 1457 | PACKET_FastTracepoints, |
4082afcc PA |
1458 | |
1459 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1460 | PACKET_StaticTracepoints, |
4082afcc PA |
1461 | |
1462 | /* Support for installing tracepoints while a trace experiment is | |
1463 | running. */ | |
1e4d1764 | 1464 | PACKET_InstallInTrace, |
4082afcc | 1465 | |
40ab02ce MS |
1466 | PACKET_bc, |
1467 | PACKET_bs, | |
409873ef | 1468 | PACKET_TracepointSource, |
d914c394 | 1469 | PACKET_QAllow, |
78d85199 | 1470 | PACKET_qXfer_fdpic, |
03583c20 | 1471 | PACKET_QDisableRandomization, |
d1feda86 | 1472 | PACKET_QAgent, |
f6f899bf | 1473 | PACKET_QTBuffer_size, |
9accd112 MM |
1474 | PACKET_Qbtrace_off, |
1475 | PACKET_Qbtrace_bts, | |
b20a6524 | 1476 | PACKET_Qbtrace_pt, |
9accd112 | 1477 | PACKET_qXfer_btrace, |
4082afcc PA |
1478 | |
1479 | /* Support for the QNonStop packet. */ | |
1480 | PACKET_QNonStop, | |
1481 | ||
65706a29 PA |
1482 | /* Support for the QThreadEvents packet. */ |
1483 | PACKET_QThreadEvents, | |
1484 | ||
4082afcc PA |
1485 | /* Support for multi-process extensions. */ |
1486 | PACKET_multiprocess_feature, | |
1487 | ||
1488 | /* Support for enabling and disabling tracepoints while a trace | |
1489 | experiment is running. */ | |
1490 | PACKET_EnableDisableTracepoints_feature, | |
1491 | ||
1492 | /* Support for collecting strings using the tracenz bytecode. */ | |
1493 | PACKET_tracenz_feature, | |
1494 | ||
1495 | /* Support for continuing to run a trace experiment while GDB is | |
1496 | disconnected. */ | |
1497 | PACKET_DisconnectedTracing_feature, | |
1498 | ||
1499 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1500 | PACKET_augmented_libraries_svr4_read_feature, | |
1501 | ||
f4abbc16 MM |
1502 | /* Support for the qXfer:btrace-conf:read packet. */ |
1503 | PACKET_qXfer_btrace_conf, | |
1504 | ||
d33501a5 MM |
1505 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1506 | PACKET_Qbtrace_conf_bts_size, | |
1507 | ||
f7e6eed5 PA |
1508 | /* Support for swbreak+ feature. */ |
1509 | PACKET_swbreak_feature, | |
1510 | ||
1511 | /* Support for hwbreak+ feature. */ | |
1512 | PACKET_hwbreak_feature, | |
1513 | ||
89245bc0 DB |
1514 | /* Support for fork events. */ |
1515 | PACKET_fork_event_feature, | |
1516 | ||
1517 | /* Support for vfork events. */ | |
1518 | PACKET_vfork_event_feature, | |
1519 | ||
b20a6524 MM |
1520 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1521 | PACKET_Qbtrace_conf_pt_size, | |
1522 | ||
94585166 DB |
1523 | /* Support for exec events. */ |
1524 | PACKET_exec_event_feature, | |
1525 | ||
750ce8d1 YQ |
1526 | /* Support for query supported vCont actions. */ |
1527 | PACKET_vContSupported, | |
1528 | ||
de979965 PA |
1529 | /* Support remote CTRL-C. */ |
1530 | PACKET_vCtrlC, | |
1531 | ||
f2faf941 PA |
1532 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1533 | PACKET_no_resumed, | |
1534 | ||
444abaca DJ |
1535 | PACKET_MAX |
1536 | }; | |
506fb367 | 1537 | |
444abaca | 1538 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1539 | |
f7e6eed5 PA |
1540 | /* Returns the packet's corresponding "set remote foo-packet" command |
1541 | state. See struct packet_config for more details. */ | |
1542 | ||
1543 | static enum auto_boolean | |
1544 | packet_set_cmd_state (int packet) | |
1545 | { | |
1546 | return remote_protocol_packets[packet].detect; | |
1547 | } | |
1548 | ||
4082afcc PA |
1549 | /* Returns whether a given packet or feature is supported. This takes |
1550 | into account the state of the corresponding "set remote foo-packet" | |
1551 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1552 | |
4082afcc PA |
1553 | static enum packet_support |
1554 | packet_config_support (struct packet_config *config) | |
1555 | { | |
1556 | switch (config->detect) | |
444abaca | 1557 | { |
4082afcc PA |
1558 | case AUTO_BOOLEAN_TRUE: |
1559 | return PACKET_ENABLE; | |
1560 | case AUTO_BOOLEAN_FALSE: | |
1561 | return PACKET_DISABLE; | |
1562 | case AUTO_BOOLEAN_AUTO: | |
1563 | return config->support; | |
1564 | default: | |
1565 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1566 | } |
4082afcc PA |
1567 | } |
1568 | ||
1569 | /* Same as packet_config_support, but takes the packet's enum value as | |
1570 | argument. */ | |
1571 | ||
1572 | static enum packet_support | |
1573 | packet_support (int packet) | |
1574 | { | |
1575 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1576 | ||
1577 | return packet_config_support (config); | |
dc8acb97 MS |
1578 | } |
1579 | ||
5a2468f5 | 1580 | static void |
444abaca DJ |
1581 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1582 | struct cmd_list_element *c, | |
1583 | const char *value) | |
5a2468f5 | 1584 | { |
444abaca | 1585 | struct packet_config *packet; |
5a2468f5 | 1586 | |
444abaca DJ |
1587 | for (packet = remote_protocol_packets; |
1588 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1589 | packet++) | |
1590 | { | |
1591 | if (&packet->detect == c->var) | |
1592 | { | |
1593 | show_packet_config_cmd (packet); | |
1594 | return; | |
1595 | } | |
1596 | } | |
9b20d036 | 1597 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1598 | c->name); |
5a2468f5 JM |
1599 | } |
1600 | ||
d471ea57 AC |
1601 | /* Should we try one of the 'Z' requests? */ |
1602 | ||
1603 | enum Z_packet_type | |
1604 | { | |
1605 | Z_PACKET_SOFTWARE_BP, | |
1606 | Z_PACKET_HARDWARE_BP, | |
1607 | Z_PACKET_WRITE_WP, | |
1608 | Z_PACKET_READ_WP, | |
1609 | Z_PACKET_ACCESS_WP, | |
1610 | NR_Z_PACKET_TYPES | |
1611 | }; | |
96baa820 | 1612 | |
d471ea57 | 1613 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1614 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1615 | |
7f19b9a2 | 1616 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1617 | |
1618 | static void | |
fba45db2 KB |
1619 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1620 | struct cmd_list_element *c) | |
96baa820 | 1621 | { |
d471ea57 | 1622 | int i; |
a744cf53 | 1623 | |
d471ea57 | 1624 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1625 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1626 | } |
1627 | ||
1628 | static void | |
08546159 AC |
1629 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1630 | struct cmd_list_element *c, | |
1631 | const char *value) | |
96baa820 | 1632 | { |
d471ea57 | 1633 | int i; |
a744cf53 | 1634 | |
d471ea57 AC |
1635 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1636 | { | |
444abaca | 1637 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1638 | } |
96baa820 JM |
1639 | } |
1640 | ||
4082afcc PA |
1641 | /* Returns true if the multi-process extensions are in effect. */ |
1642 | ||
1643 | static int | |
1644 | remote_multi_process_p (struct remote_state *rs) | |
1645 | { | |
1646 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1647 | } | |
1648 | ||
de0d863e DB |
1649 | /* Returns true if fork events are supported. */ |
1650 | ||
1651 | static int | |
1652 | remote_fork_event_p (struct remote_state *rs) | |
1653 | { | |
1654 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1655 | } | |
1656 | ||
c269dbdb DB |
1657 | /* Returns true if vfork events are supported. */ |
1658 | ||
1659 | static int | |
1660 | remote_vfork_event_p (struct remote_state *rs) | |
1661 | { | |
1662 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1663 | } | |
1664 | ||
d46addbb DB |
1665 | /* Returns true if exec events are supported. */ |
1666 | ||
1667 | static int | |
1668 | remote_exec_event_p (struct remote_state *rs) | |
1669 | { | |
1670 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1671 | } | |
1672 | ||
cbb8991c DB |
1673 | /* Insert fork catchpoint target routine. If fork events are enabled |
1674 | then return success, nothing more to do. */ | |
1675 | ||
1676 | static int | |
1677 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1678 | { | |
1679 | struct remote_state *rs = get_remote_state (); | |
1680 | ||
1681 | return !remote_fork_event_p (rs); | |
1682 | } | |
1683 | ||
1684 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1685 | return success. */ | |
1686 | ||
1687 | static int | |
1688 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1689 | { | |
1690 | return 0; | |
1691 | } | |
1692 | ||
1693 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1694 | then return success, nothing more to do. */ | |
1695 | ||
1696 | static int | |
1697 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1698 | { | |
1699 | struct remote_state *rs = get_remote_state (); | |
1700 | ||
1701 | return !remote_vfork_event_p (rs); | |
1702 | } | |
1703 | ||
1704 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1705 | return success. */ | |
1706 | ||
1707 | static int | |
1708 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1709 | { | |
1710 | return 0; | |
1711 | } | |
1712 | ||
d46addbb DB |
1713 | /* Insert exec catchpoint target routine. If exec events are |
1714 | enabled, just return success. */ | |
1715 | ||
1716 | static int | |
1717 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1718 | { | |
1719 | struct remote_state *rs = get_remote_state (); | |
1720 | ||
1721 | return !remote_exec_event_p (rs); | |
1722 | } | |
1723 | ||
1724 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1725 | return success. */ | |
1726 | ||
1727 | static int | |
1728 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1729 | { | |
1730 | return 0; | |
1731 | } | |
1732 | ||
74531fed PA |
1733 | \f |
1734 | /* Asynchronous signal handle registered as event loop source for | |
1735 | when we have pending events ready to be passed to the core. */ | |
1736 | ||
1737 | static struct async_event_handler *remote_async_inferior_event_token; | |
1738 | ||
c906108c SS |
1739 | \f |
1740 | ||
79d7f229 PA |
1741 | static ptid_t magic_null_ptid; |
1742 | static ptid_t not_sent_ptid; | |
1743 | static ptid_t any_thread_ptid; | |
1744 | ||
0b16c5cf PA |
1745 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1746 | detach instead of killing it when bailing out). */ | |
1747 | ||
1748 | static int | |
1749 | remote_query_attached (int pid) | |
1750 | { | |
1751 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1752 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1753 | |
4082afcc | 1754 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1755 | return 0; |
1756 | ||
1757 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1758 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1759 | else |
bba74b36 | 1760 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1761 | |
1762 | putpkt (rs->buf); | |
1763 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1764 | ||
1765 | switch (packet_ok (rs->buf, | |
1554e9be | 1766 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1767 | { |
1768 | case PACKET_OK: | |
1769 | if (strcmp (rs->buf, "1") == 0) | |
1770 | return 1; | |
1771 | break; | |
1772 | case PACKET_ERROR: | |
1773 | warning (_("Remote failure reply: %s"), rs->buf); | |
1774 | break; | |
1775 | case PACKET_UNKNOWN: | |
1776 | break; | |
1777 | } | |
1778 | ||
1779 | return 0; | |
1780 | } | |
1781 | ||
49c62f2e PA |
1782 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1783 | has been invented by GDB, instead of reported by the target. Since | |
1784 | we can be connected to a remote system before before knowing about | |
1785 | any inferior, mark the target with execution when we find the first | |
1786 | inferior. If ATTACHED is 1, then we had just attached to this | |
1787 | inferior. If it is 0, then we just created this inferior. If it | |
1788 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1789 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1790 | attempt to open this inferior's executable as the main executable | |
1791 | if no main executable is open already. */ | |
1941c569 PA |
1792 | |
1793 | static struct inferior * | |
1b6e6f5c GB |
1794 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1795 | int try_open_exec) | |
1941c569 | 1796 | { |
1941c569 PA |
1797 | struct inferior *inf; |
1798 | ||
0b16c5cf PA |
1799 | /* Check whether this process we're learning about is to be |
1800 | considered attached, or if is to be considered to have been | |
1801 | spawned by the stub. */ | |
1802 | if (attached == -1) | |
1803 | attached = remote_query_attached (pid); | |
1804 | ||
f5656ead | 1805 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1806 | { |
1807 | /* If the target shares code across all inferiors, then every | |
1808 | attach adds a new inferior. */ | |
1809 | inf = add_inferior (pid); | |
1810 | ||
1811 | /* ... and every inferior is bound to the same program space. | |
1812 | However, each inferior may still have its own address | |
1813 | space. */ | |
1814 | inf->aspace = maybe_new_address_space (); | |
1815 | inf->pspace = current_program_space; | |
1816 | } | |
1817 | else | |
1818 | { | |
1819 | /* In the traditional debugging scenario, there's a 1-1 match | |
1820 | between program/address spaces. We simply bind the inferior | |
1821 | to the program space's address space. */ | |
1822 | inf = current_inferior (); | |
1823 | inferior_appeared (inf, pid); | |
1824 | } | |
1941c569 | 1825 | |
0b16c5cf | 1826 | inf->attach_flag = attached; |
49c62f2e | 1827 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1828 | |
1b6e6f5c GB |
1829 | /* If no main executable is currently open then attempt to |
1830 | open the file that was executed to create this inferior. */ | |
835205d0 | 1831 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 1832 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 1833 | |
1941c569 PA |
1834 | return inf; |
1835 | } | |
1836 | ||
85ad3aaf PA |
1837 | static struct private_thread_info * |
1838 | get_private_info_thread (struct thread_info *info); | |
1839 | ||
1941c569 PA |
1840 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
1841 | according to RUNNING. */ | |
1842 | ||
c906108c | 1843 | static void |
0d5b594f | 1844 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 1845 | { |
b7ea362b | 1846 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 1847 | struct thread_info *thread; |
b7ea362b PA |
1848 | |
1849 | /* GDB historically didn't pull threads in the initial connection | |
1850 | setup. If the remote target doesn't even have a concept of | |
1851 | threads (e.g., a bare-metal target), even if internally we | |
1852 | consider that a single-threaded target, mentioning a new thread | |
1853 | might be confusing to the user. Be silent then, preserving the | |
1854 | age old behavior. */ | |
1855 | if (rs->starting_up) | |
85ad3aaf | 1856 | thread = add_thread_silent (ptid); |
b7ea362b | 1857 | else |
85ad3aaf | 1858 | thread = add_thread (ptid); |
1941c569 | 1859 | |
85ad3aaf | 1860 | get_private_info_thread (thread)->vcont_resumed = executing; |
0d5b594f | 1861 | set_executing (ptid, executing); |
1941c569 PA |
1862 | set_running (ptid, running); |
1863 | } | |
1864 | ||
1865 | /* Come here when we learn about a thread id from the remote target. | |
1866 | It may be the first time we hear about such thread, so take the | |
1867 | opportunity to add it to GDB's thread list. In case this is the | |
1868 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
1869 | GDB's inferior list as well. EXECUTING indicates whether the |
1870 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
1871 | |
1872 | static void | |
0d5b594f | 1873 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 1874 | { |
0d5b594f PA |
1875 | /* In non-stop mode, we assume new found threads are (externally) |
1876 | running until proven otherwise with a stop reply. In all-stop, | |
1877 | we can only get here if all threads are stopped. */ | |
1878 | int running = target_is_non_stop_p () ? 1 : 0; | |
1879 | ||
c906108c SS |
1880 | /* If this is a new thread, add it to GDB's thread list. |
1881 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1882 | |
1883 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1884 | { | |
1885 | /* We're seeing an event on a thread id we knew had exited. | |
1886 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 1887 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
1888 | return; |
1889 | } | |
1890 | ||
79d7f229 | 1891 | if (!in_thread_list (currthread)) |
c0a2216e | 1892 | { |
1941c569 | 1893 | struct inferior *inf = NULL; |
bad34192 | 1894 | int pid = ptid_get_pid (currthread); |
1941c569 | 1895 | |
bad34192 PA |
1896 | if (ptid_is_pid (inferior_ptid) |
1897 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1898 | { |
1899 | /* inferior_ptid has no thread member yet. This can happen | |
1900 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1901 | stub doesn't support qC. This is the first stop reported | |
1902 | after an attach, so this is the main thread. Update the | |
1903 | ptid in the thread list. */ | |
bad34192 PA |
1904 | if (in_thread_list (pid_to_ptid (pid))) |
1905 | thread_change_ptid (inferior_ptid, currthread); | |
1906 | else | |
1907 | { | |
0d5b594f | 1908 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
1909 | inferior_ptid = currthread; |
1910 | } | |
dc146f7c | 1911 | return; |
c0a2216e | 1912 | } |
82f73884 PA |
1913 | |
1914 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1915 | { |
1916 | /* inferior_ptid is not set yet. This can happen with the | |
1917 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1918 | doesn't support qC. This is the first stop reported | |
1919 | after an attach, so this is the main thread. Update the | |
1920 | ptid in the thread list. */ | |
dc146f7c | 1921 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1922 | return; |
c0a2216e | 1923 | } |
82f73884 | 1924 | |
29c87f7f PA |
1925 | /* When connecting to a target remote, or to a target |
1926 | extended-remote which already was debugging an inferior, we | |
1927 | may not know about it yet. Add it before adding its child | |
1928 | thread, so notifications are emitted in a sensible order. */ | |
1929 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1930 | { |
1931 | struct remote_state *rs = get_remote_state (); | |
1932 | int fake_pid_p = !remote_multi_process_p (rs); | |
1933 | ||
1934 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1935 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1936 | } |
29c87f7f | 1937 | |
82f73884 | 1938 | /* This is really a new thread. Add it. */ |
0d5b594f | 1939 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
1940 | |
1941 | /* If we found a new inferior, let the common code do whatever | |
1942 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1943 | breakpoints), unless we're just setting up an all-stop |
1944 | connection. */ | |
1941c569 | 1945 | if (inf != NULL) |
b7ea362b PA |
1946 | { |
1947 | struct remote_state *rs = get_remote_state (); | |
1948 | ||
6efcd9a8 | 1949 | if (!rs->starting_up) |
0d5b594f | 1950 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 1951 | } |
c0a2216e | 1952 | } |
c906108c SS |
1953 | } |
1954 | ||
85ad3aaf | 1955 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 1956 | |
70221824 | 1957 | static struct private_thread_info * |
85ad3aaf | 1958 | get_private_info_thread (struct thread_info *thread) |
dc146f7c | 1959 | { |
85ad3aaf | 1960 | gdb_assert (thread != NULL); |
dc146f7c | 1961 | |
85ad3aaf | 1962 | if (thread->priv == NULL) |
dc146f7c | 1963 | { |
85ad3aaf PA |
1964 | struct private_thread_info *priv = XNEW (struct private_thread_info); |
1965 | ||
1966 | thread->private_dtor = free_private_thread_info; | |
1967 | thread->priv = priv; | |
1968 | ||
1969 | priv->core = -1; | |
1970 | priv->extra = NULL; | |
1971 | priv->name = NULL; | |
1972 | priv->name = NULL; | |
1973 | priv->last_resume_step = 0; | |
1974 | priv->last_resume_sig = GDB_SIGNAL_0; | |
1975 | priv->vcont_resumed = 0; | |
dc146f7c VP |
1976 | } |
1977 | ||
85ad3aaf PA |
1978 | return thread->priv; |
1979 | } | |
1980 | ||
1981 | /* Return PTID's private thread data, creating it if necessary. */ | |
1982 | ||
1983 | static struct private_thread_info * | |
1984 | get_private_info_ptid (ptid_t ptid) | |
1985 | { | |
1986 | struct thread_info *info = find_thread_ptid (ptid); | |
1987 | ||
1988 | return get_private_info_thread (info); | |
dc146f7c VP |
1989 | } |
1990 | ||
74531fed PA |
1991 | /* Call this function as a result of |
1992 | 1) A halt indication (T packet) containing a thread id | |
1993 | 2) A direct query of currthread | |
0df8b418 | 1994 | 3) Successful execution of set thread */ |
74531fed PA |
1995 | |
1996 | static void | |
47f8a51d | 1997 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1998 | { |
47f8a51d | 1999 | rs->general_thread = currthread; |
74531fed PA |
2000 | } |
2001 | ||
89be2091 DJ |
2002 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2003 | it can simply pass through to the inferior without reporting. */ | |
2004 | ||
2005 | static void | |
94bedb42 TT |
2006 | remote_pass_signals (struct target_ops *self, |
2007 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 2008 | { |
4082afcc | 2009 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2010 | { |
2011 | char *pass_packet, *p; | |
89be2091 | 2012 | int count = 0, i; |
747dc59d | 2013 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
2014 | |
2015 | gdb_assert (numsigs < 256); | |
2016 | for (i = 0; i < numsigs; i++) | |
2017 | { | |
2455069d | 2018 | if (pass_signals[i]) |
89be2091 DJ |
2019 | count++; |
2020 | } | |
224c3ddb | 2021 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2022 | strcpy (pass_packet, "QPassSignals:"); |
2023 | p = pass_packet + strlen (pass_packet); | |
2024 | for (i = 0; i < numsigs; i++) | |
2025 | { | |
2455069d | 2026 | if (pass_signals[i]) |
89be2091 DJ |
2027 | { |
2028 | if (i >= 16) | |
2029 | *p++ = tohex (i >> 4); | |
2030 | *p++ = tohex (i & 15); | |
2031 | if (count) | |
2032 | *p++ = ';'; | |
2033 | else | |
2034 | break; | |
2035 | count--; | |
2036 | } | |
2037 | } | |
2038 | *p = 0; | |
747dc59d | 2039 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2040 | { |
89be2091 DJ |
2041 | putpkt (pass_packet); |
2042 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2043 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2044 | if (rs->last_pass_packet) |
2045 | xfree (rs->last_pass_packet); | |
2046 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2047 | } |
2048 | else | |
2049 | xfree (pass_packet); | |
2050 | } | |
2051 | } | |
2052 | ||
82075af2 JS |
2053 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2054 | to report syscalls to GDB. */ | |
2055 | ||
2056 | static int | |
2057 | remote_set_syscall_catchpoint (struct target_ops *self, | |
2058 | int pid, int needed, int any_count, | |
2059 | int table_size, int *table) | |
2060 | { | |
2061 | char *catch_packet; | |
2062 | enum packet_result result; | |
2063 | int n_sysno = 0; | |
2064 | ||
2065 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2066 | { | |
2067 | /* Not supported. */ | |
2068 | return 1; | |
2069 | } | |
2070 | ||
2071 | if (needed && !any_count) | |
2072 | { | |
2073 | int i; | |
2074 | ||
2075 | /* Count how many syscalls are to be caught (table[sysno] != 0). */ | |
2076 | for (i = 0; i < table_size; i++) | |
2077 | { | |
2078 | if (table[i] != 0) | |
2079 | n_sysno++; | |
2080 | } | |
2081 | } | |
2082 | ||
2083 | if (remote_debug) | |
2084 | { | |
2085 | fprintf_unfiltered (gdb_stdlog, | |
2086 | "remote_set_syscall_catchpoint " | |
2087 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2088 | pid, needed, any_count, n_sysno); | |
2089 | } | |
2090 | ||
2091 | if (needed) | |
2092 | { | |
2093 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2094 | characters for a sysno. If the resulting packet size is too | |
2095 | big, fallback on the non-selective packet. */ | |
2096 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
2097 | ||
c0518081 | 2098 | catch_packet = (char *) xmalloc (maxpktsz); |
82075af2 JS |
2099 | strcpy (catch_packet, "QCatchSyscalls:1"); |
2100 | if (!any_count) | |
2101 | { | |
2102 | int i; | |
2103 | char *p; | |
2104 | ||
2105 | p = catch_packet; | |
2106 | p += strlen (p); | |
2107 | ||
2108 | /* Add in catch_packet each syscall to be caught (table[i] != 0). */ | |
2109 | for (i = 0; i < table_size; i++) | |
2110 | { | |
2111 | if (table[i] != 0) | |
2112 | p += xsnprintf (p, catch_packet + maxpktsz - p, ";%x", i); | |
2113 | } | |
2114 | } | |
2115 | if (strlen (catch_packet) > get_remote_packet_size ()) | |
2116 | { | |
2117 | /* catch_packet too big. Fallback to less efficient | |
2118 | non selective mode, with GDB doing the filtering. */ | |
2119 | catch_packet[sizeof ("QCatchSyscalls:1") - 1] = 0; | |
2120 | } | |
2121 | } | |
2122 | else | |
2123 | catch_packet = xstrdup ("QCatchSyscalls:0"); | |
2124 | ||
2125 | { | |
2126 | struct cleanup *old_chain = make_cleanup (xfree, catch_packet); | |
2127 | struct remote_state *rs = get_remote_state (); | |
2128 | ||
2129 | putpkt (catch_packet); | |
2130 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2131 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2132 | do_cleanups (old_chain); | |
2133 | if (result == PACKET_OK) | |
2134 | return 0; | |
2135 | else | |
2136 | return -1; | |
2137 | } | |
2138 | } | |
2139 | ||
9b224c5e PA |
2140 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2141 | signals it should pass through to the inferior when detaching. */ | |
2142 | ||
2143 | static void | |
daf5e9b6 TT |
2144 | remote_program_signals (struct target_ops *self, |
2145 | int numsigs, unsigned char *signals) | |
9b224c5e | 2146 | { |
4082afcc | 2147 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2148 | { |
2149 | char *packet, *p; | |
2150 | int count = 0, i; | |
5e4a05c4 | 2151 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2152 | |
2153 | gdb_assert (numsigs < 256); | |
2154 | for (i = 0; i < numsigs; i++) | |
2155 | { | |
2156 | if (signals[i]) | |
2157 | count++; | |
2158 | } | |
224c3ddb | 2159 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2160 | strcpy (packet, "QProgramSignals:"); |
2161 | p = packet + strlen (packet); | |
2162 | for (i = 0; i < numsigs; i++) | |
2163 | { | |
2164 | if (signal_pass_state (i)) | |
2165 | { | |
2166 | if (i >= 16) | |
2167 | *p++ = tohex (i >> 4); | |
2168 | *p++ = tohex (i & 15); | |
2169 | if (count) | |
2170 | *p++ = ';'; | |
2171 | else | |
2172 | break; | |
2173 | count--; | |
2174 | } | |
2175 | } | |
2176 | *p = 0; | |
5e4a05c4 TT |
2177 | if (!rs->last_program_signals_packet |
2178 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2179 | { |
9b224c5e PA |
2180 | putpkt (packet); |
2181 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2182 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2183 | xfree (rs->last_program_signals_packet); |
2184 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2185 | } |
2186 | else | |
2187 | xfree (packet); | |
2188 | } | |
2189 | } | |
2190 | ||
79d7f229 PA |
2191 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2192 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2193 | thread. If GEN is set, set the general thread, if not, then set | |
2194 | the step/continue thread. */ | |
c906108c | 2195 | static void |
d62a8ae2 | 2196 | set_thread (ptid_t ptid, int gen) |
c906108c | 2197 | { |
d01949b6 | 2198 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2199 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2200 | char *buf = rs->buf; |
79d7f229 | 2201 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2202 | |
79d7f229 | 2203 | if (ptid_equal (state, ptid)) |
c906108c SS |
2204 | return; |
2205 | ||
79d7f229 PA |
2206 | *buf++ = 'H'; |
2207 | *buf++ = gen ? 'g' : 'c'; | |
2208 | if (ptid_equal (ptid, magic_null_ptid)) | |
2209 | xsnprintf (buf, endbuf - buf, "0"); | |
2210 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2211 | xsnprintf (buf, endbuf - buf, "0"); | |
2212 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2213 | xsnprintf (buf, endbuf - buf, "-1"); | |
2214 | else | |
82f73884 | 2215 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2216 | putpkt (rs->buf); |
6d820c5c | 2217 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2218 | if (gen) |
47f8a51d | 2219 | rs->general_thread = ptid; |
c906108c | 2220 | else |
47f8a51d | 2221 | rs->continue_thread = ptid; |
c906108c | 2222 | } |
79d7f229 PA |
2223 | |
2224 | static void | |
d62a8ae2 | 2225 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2226 | { |
2227 | set_thread (ptid, 1); | |
2228 | } | |
2229 | ||
2230 | static void | |
d62a8ae2 | 2231 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2232 | { |
2233 | set_thread (ptid, 0); | |
2234 | } | |
2235 | ||
3c9c4b83 PA |
2236 | /* Change the remote current process. Which thread within the process |
2237 | ends up selected isn't important, as long as it is the same process | |
2238 | as what INFERIOR_PTID points to. | |
2239 | ||
2240 | This comes from that fact that there is no explicit notion of | |
2241 | "selected process" in the protocol. The selected process for | |
2242 | general operations is the process the selected general thread | |
2243 | belongs to. */ | |
2244 | ||
2245 | static void | |
2246 | set_general_process (void) | |
2247 | { | |
2248 | struct remote_state *rs = get_remote_state (); | |
2249 | ||
2250 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2251 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2252 | return; |
2253 | ||
2254 | /* We only need to change the remote current thread if it's pointing | |
2255 | at some other process. */ | |
47f8a51d | 2256 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2257 | set_general_thread (inferior_ptid); |
2258 | } | |
2259 | ||
c906108c | 2260 | \f |
7d1a114c PA |
2261 | /* Return nonzero if this is the main thread that we made up ourselves |
2262 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2263 | |
2264 | static int | |
7d1a114c | 2265 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2266 | { |
c0a2216e PA |
2267 | if (ptid_equal (ptid, magic_null_ptid)) |
2268 | /* The main thread is always alive. */ | |
2269 | return 1; | |
2270 | ||
ba348170 | 2271 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2272 | /* The main thread is always alive. This can happen after a |
2273 | vAttach, if the remote side doesn't support | |
2274 | multi-threading. */ | |
2275 | return 1; | |
2276 | ||
7d1a114c PA |
2277 | return 0; |
2278 | } | |
2279 | ||
2280 | /* Return nonzero if the thread PTID is still alive on the remote | |
2281 | system. */ | |
2282 | ||
2283 | static int | |
2284 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2285 | { | |
2286 | struct remote_state *rs = get_remote_state (); | |
2287 | char *p, *endp; | |
2288 | ||
2289 | /* Check if this is a thread that we made up ourselves to model | |
2290 | non-threaded targets as single-threaded. */ | |
2291 | if (remote_thread_always_alive (ops, ptid)) | |
2292 | return 1; | |
2293 | ||
82f73884 PA |
2294 | p = rs->buf; |
2295 | endp = rs->buf + get_remote_packet_size (); | |
2296 | ||
2297 | *p++ = 'T'; | |
2298 | write_ptid (p, endp, ptid); | |
2299 | ||
2e9f7625 | 2300 | putpkt (rs->buf); |
6d820c5c | 2301 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2302 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2303 | } |
2304 | ||
79efa585 SM |
2305 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2306 | The thread_info object owns the memory for the name. */ | |
2307 | ||
2308 | static const char * | |
2309 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2310 | { | |
2311 | if (info->priv != NULL) | |
2312 | return info->priv->name; | |
2313 | ||
2314 | return NULL; | |
2315 | } | |
2316 | ||
c906108c SS |
2317 | /* About these extended threadlist and threadinfo packets. They are |
2318 | variable length packets but, the fields within them are often fixed | |
2319 | length. They are redundent enough to send over UDP as is the | |
2320 | remote protocol in general. There is a matching unit test module | |
2321 | in libstub. */ | |
2322 | ||
23860348 | 2323 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2324 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2325 | changable. */ |
cce74817 JM |
2326 | |
2327 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2328 | Plan to fix this. */ |
cce74817 | 2329 | |
23860348 | 2330 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2331 | |
9d1f7ab2 | 2332 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2333 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2334 | |
2335 | struct gdb_ext_thread_info | |
c5aa993b | 2336 | { |
23860348 | 2337 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2338 | int active; /* Has state interesting to GDB? |
23860348 | 2339 | regs, stack. */ |
2bc416ba | 2340 | char display[256]; /* Brief state display, name, |
cedea757 | 2341 | blocked/suspended. */ |
23860348 | 2342 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2343 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2344 | whatever. */ |
c5aa993b | 2345 | }; |
cce74817 JM |
2346 | |
2347 | /* The volume of remote transfers can be limited by submitting | |
2348 | a mask containing bits specifying the desired information. | |
2349 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2350 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2351 | |
2352 | #define TAG_THREADID 1 | |
2353 | #define TAG_EXISTS 2 | |
2354 | #define TAG_DISPLAY 4 | |
2355 | #define TAG_THREADNAME 8 | |
c5aa993b | 2356 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2357 | |
23860348 | 2358 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2359 | |
a14ed312 | 2360 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2361 | |
a14ed312 | 2362 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2363 | |
a14ed312 | 2364 | static char *pack_int (char *buf, int value); |
cce74817 | 2365 | |
a14ed312 | 2366 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2367 | |
a14ed312 | 2368 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2369 | |
23860348 | 2370 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2371 | |
23860348 | 2372 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2373 | |
23860348 | 2374 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2375 | |
23860348 | 2376 | static int threadref_to_int (threadref *ref); |
cce74817 | 2377 | |
23860348 | 2378 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2379 | |
23860348 | 2380 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2381 | |
2bc416ba | 2382 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2383 | threadref *id); |
cce74817 | 2384 | |
a14ed312 | 2385 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2386 | threadref *expectedref, |
a14ed312 KB |
2387 | struct gdb_ext_thread_info |
2388 | *info); | |
cce74817 JM |
2389 | |
2390 | ||
2bc416ba | 2391 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2392 | int fieldset, /*TAG mask */ |
a14ed312 | 2393 | struct gdb_ext_thread_info *info); |
cce74817 | 2394 | |
a14ed312 KB |
2395 | static char *pack_threadlist_request (char *pkt, int startflag, |
2396 | int threadcount, | |
23860348 | 2397 | threadref *nextthread); |
cce74817 | 2398 | |
a14ed312 KB |
2399 | static int parse_threadlist_response (char *pkt, |
2400 | int result_limit, | |
23860348 | 2401 | threadref *original_echo, |
2bc416ba | 2402 | threadref *resultlist, |
23860348 | 2403 | int *doneflag); |
cce74817 | 2404 | |
a14ed312 | 2405 | static int remote_get_threadlist (int startflag, |
23860348 | 2406 | threadref *nextthread, |
a14ed312 KB |
2407 | int result_limit, |
2408 | int *done, | |
2bc416ba | 2409 | int *result_count, |
23860348 | 2410 | threadref *threadlist); |
cce74817 | 2411 | |
23860348 | 2412 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2413 | |
a14ed312 KB |
2414 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2415 | void *context, int looplimit); | |
cce74817 | 2416 | |
23860348 | 2417 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2418 | |
82f73884 PA |
2419 | |
2420 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2421 | buffer we're allowed to write to. Returns | |
2422 | BUF+CHARACTERS_WRITTEN. */ | |
2423 | ||
2424 | static char * | |
2425 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2426 | { | |
2427 | int pid, tid; | |
2428 | struct remote_state *rs = get_remote_state (); | |
2429 | ||
2430 | if (remote_multi_process_p (rs)) | |
2431 | { | |
2432 | pid = ptid_get_pid (ptid); | |
2433 | if (pid < 0) | |
2434 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2435 | else | |
2436 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2437 | } | |
ba348170 | 2438 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2439 | if (tid < 0) |
2440 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2441 | else | |
2442 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2443 | ||
2444 | return buf; | |
2445 | } | |
2446 | ||
2447 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2448 | passed the last parsed char. Returns null_ptid on error. */ | |
2449 | ||
2450 | static ptid_t | |
2451 | read_ptid (char *buf, char **obuf) | |
2452 | { | |
2453 | char *p = buf; | |
2454 | char *pp; | |
2455 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2456 | |
2457 | if (*p == 'p') | |
2458 | { | |
2459 | /* Multi-process ptid. */ | |
2460 | pp = unpack_varlen_hex (p + 1, &pid); | |
2461 | if (*pp != '.') | |
b37520b6 | 2462 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2463 | |
2464 | p = pp; | |
2465 | pp = unpack_varlen_hex (p + 1, &tid); | |
2466 | if (obuf) | |
2467 | *obuf = pp; | |
ba348170 | 2468 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2469 | } |
2470 | ||
2471 | /* No multi-process. Just a tid. */ | |
2472 | pp = unpack_varlen_hex (p, &tid); | |
2473 | ||
c9f35b34 KB |
2474 | /* Return null_ptid when no thread id is found. */ |
2475 | if (p == pp) | |
2476 | { | |
2477 | if (obuf) | |
2478 | *obuf = pp; | |
2479 | return null_ptid; | |
2480 | } | |
2481 | ||
82f73884 | 2482 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2483 | what's in inferior_ptid, unless it's null at this point. If so, |
2484 | then since there's no way to know the pid of the reported | |
2485 | threads, use the magic number. */ | |
2486 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2487 | pid = ptid_get_pid (magic_null_ptid); | |
2488 | else | |
2489 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2490 | |
2491 | if (obuf) | |
2492 | *obuf = pp; | |
ba348170 | 2493 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2494 | } |
2495 | ||
c906108c | 2496 | static int |
fba45db2 | 2497 | stubhex (int ch) |
c906108c SS |
2498 | { |
2499 | if (ch >= 'a' && ch <= 'f') | |
2500 | return ch - 'a' + 10; | |
2501 | if (ch >= '0' && ch <= '9') | |
2502 | return ch - '0'; | |
2503 | if (ch >= 'A' && ch <= 'F') | |
2504 | return ch - 'A' + 10; | |
2505 | return -1; | |
2506 | } | |
2507 | ||
2508 | static int | |
fba45db2 | 2509 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2510 | { |
2511 | int nibble; | |
2512 | int retval = 0; | |
2513 | ||
2514 | while (fieldlength) | |
2515 | { | |
2516 | nibble = stubhex (*buff++); | |
2517 | retval |= nibble; | |
2518 | fieldlength--; | |
2519 | if (fieldlength) | |
2520 | retval = retval << 4; | |
2521 | } | |
2522 | return retval; | |
2523 | } | |
2524 | ||
c906108c | 2525 | static char * |
fba45db2 | 2526 | unpack_nibble (char *buf, int *val) |
c906108c | 2527 | { |
b7589f7d | 2528 | *val = fromhex (*buf++); |
c906108c SS |
2529 | return buf; |
2530 | } | |
2531 | ||
c906108c | 2532 | static char * |
fba45db2 | 2533 | unpack_byte (char *buf, int *value) |
c906108c SS |
2534 | { |
2535 | *value = stub_unpack_int (buf, 2); | |
2536 | return buf + 2; | |
2537 | } | |
2538 | ||
2539 | static char * | |
fba45db2 | 2540 | pack_int (char *buf, int value) |
c906108c SS |
2541 | { |
2542 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2543 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2544 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2545 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2546 | return buf; | |
2547 | } | |
2548 | ||
2549 | static char * | |
fba45db2 | 2550 | unpack_int (char *buf, int *value) |
c906108c SS |
2551 | { |
2552 | *value = stub_unpack_int (buf, 8); | |
2553 | return buf + 8; | |
2554 | } | |
2555 | ||
23860348 | 2556 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2557 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2558 | |
2559 | static char * | |
fba45db2 | 2560 | pack_string (char *pkt, char *string) |
c906108c SS |
2561 | { |
2562 | char ch; | |
2563 | int len; | |
2564 | ||
2565 | len = strlen (string); | |
2566 | if (len > 200) | |
23860348 | 2567 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2568 | pkt = pack_hex_byte (pkt, len); |
2569 | while (len-- > 0) | |
2570 | { | |
2571 | ch = *string++; | |
2572 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2573 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2574 | *pkt++ = ch; |
2575 | } | |
2576 | return pkt; | |
2577 | } | |
2578 | #endif /* 0 (unused) */ | |
2579 | ||
2580 | static char * | |
fba45db2 | 2581 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2582 | { |
2583 | while (length--) | |
2584 | *dest++ = *src++; | |
2585 | *dest = '\0'; | |
2586 | return src; | |
2587 | } | |
2588 | ||
2589 | static char * | |
fba45db2 | 2590 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2591 | { |
2592 | char *limit; | |
2593 | unsigned char *altid; | |
2594 | ||
2595 | altid = (unsigned char *) id; | |
2596 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2597 | while (pkt < limit) | |
2598 | pkt = pack_hex_byte (pkt, *altid++); | |
2599 | return pkt; | |
2600 | } | |
2601 | ||
2602 | ||
2603 | static char * | |
fba45db2 | 2604 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2605 | { |
2606 | char *altref; | |
2607 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2608 | int x, y; | |
2609 | ||
2610 | altref = (char *) id; | |
2611 | ||
2612 | while (inbuf < limit) | |
2613 | { | |
2614 | x = stubhex (*inbuf++); | |
2615 | y = stubhex (*inbuf++); | |
2616 | *altref++ = (x << 4) | y; | |
2617 | } | |
2618 | return inbuf; | |
2619 | } | |
2620 | ||
2621 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2622 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2623 | to use 64bit thread references internally. This is an adapter |
2624 | function. */ | |
2625 | ||
2626 | void | |
fba45db2 | 2627 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2628 | { |
2629 | unsigned char *scan; | |
2630 | ||
2631 | scan = (unsigned char *) id; | |
2632 | { | |
2633 | int i = 4; | |
2634 | while (i--) | |
2635 | *scan++ = 0; | |
2636 | } | |
2637 | *scan++ = (value >> 24) & 0xff; | |
2638 | *scan++ = (value >> 16) & 0xff; | |
2639 | *scan++ = (value >> 8) & 0xff; | |
2640 | *scan++ = (value & 0xff); | |
2641 | } | |
2642 | ||
2643 | static int | |
fba45db2 | 2644 | threadref_to_int (threadref *ref) |
c906108c SS |
2645 | { |
2646 | int i, value = 0; | |
2647 | unsigned char *scan; | |
2648 | ||
cfd77fa1 | 2649 | scan = *ref; |
c906108c SS |
2650 | scan += 4; |
2651 | i = 4; | |
2652 | while (i-- > 0) | |
2653 | value = (value << 8) | ((*scan++) & 0xff); | |
2654 | return value; | |
2655 | } | |
2656 | ||
2657 | static void | |
fba45db2 | 2658 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2659 | { |
2660 | int i; | |
2661 | unsigned char *csrc, *cdest; | |
2662 | ||
2663 | csrc = (unsigned char *) src; | |
2664 | cdest = (unsigned char *) dest; | |
2665 | i = 8; | |
2666 | while (i--) | |
2667 | *cdest++ = *csrc++; | |
2668 | } | |
2669 | ||
2670 | static int | |
fba45db2 | 2671 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2672 | { |
23860348 | 2673 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2674 | #if 0 |
2675 | unsigned char *srcp, *destp; | |
2676 | int i, result; | |
2677 | srcp = (char *) src; | |
2678 | destp = (char *) dest; | |
2679 | ||
2680 | result = 1; | |
2681 | while (i-- > 0) | |
2682 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2683 | return result; | |
2684 | #endif | |
2685 | return 1; | |
2686 | } | |
2687 | ||
2688 | /* | |
c5aa993b JM |
2689 | threadid:1, # always request threadid |
2690 | context_exists:2, | |
2691 | display:4, | |
2692 | unique_name:8, | |
2693 | more_display:16 | |
2694 | */ | |
c906108c SS |
2695 | |
2696 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2697 | ||
2698 | static char * | |
fba45db2 | 2699 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2700 | { |
23860348 MS |
2701 | *pkt++ = 'q'; /* Info Query */ |
2702 | *pkt++ = 'P'; /* process or thread info */ | |
2703 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2704 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2705 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2706 | return pkt; |
2707 | } | |
2708 | ||
23860348 | 2709 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2710 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2711 | add more fields as time goes by. */ |
c906108c | 2712 | |
23860348 | 2713 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2714 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2715 | fetch registers and its stack? */ |
c5aa993b | 2716 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2717 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2718 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2719 | the process. */ |
c906108c SS |
2720 | |
2721 | static int | |
fba45db2 KB |
2722 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2723 | struct gdb_ext_thread_info *info) | |
c906108c | 2724 | { |
d01949b6 | 2725 | struct remote_state *rs = get_remote_state (); |
c906108c | 2726 | int mask, length; |
cfd77fa1 | 2727 | int tag; |
c906108c | 2728 | threadref ref; |
6d820c5c | 2729 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2730 | int retval = 1; |
2731 | ||
23860348 | 2732 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2733 | info->active = 0; |
2734 | info->display[0] = '\0'; | |
2735 | info->shortname[0] = '\0'; | |
2736 | info->more_display[0] = '\0'; | |
2737 | ||
23860348 MS |
2738 | /* Assume the characters indicating the packet type have been |
2739 | stripped. */ | |
c906108c SS |
2740 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2741 | pkt = unpack_threadid (pkt, &ref); | |
2742 | ||
2743 | if (mask == 0) | |
8a3fe4f8 | 2744 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2745 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2746 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2747 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2748 | return 0; |
2749 | } | |
2750 | copy_threadref (&info->threadid, &ref); | |
2751 | ||
23860348 | 2752 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2753 | |
23860348 MS |
2754 | /* Packets are terminated with nulls. */ |
2755 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2756 | { |
2757 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2758 | pkt = unpack_byte (pkt, &length); /* length */ |
2759 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2760 | { |
8a3fe4f8 | 2761 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2762 | retval = 0; |
2763 | break; | |
2764 | } | |
2765 | if (tag == TAG_THREADID) | |
2766 | { | |
2767 | if (length != 16) | |
2768 | { | |
8a3fe4f8 | 2769 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2770 | retval = 0; |
2771 | break; | |
2772 | } | |
2773 | pkt = unpack_threadid (pkt, &ref); | |
2774 | mask = mask & ~TAG_THREADID; | |
2775 | continue; | |
2776 | } | |
2777 | if (tag == TAG_EXISTS) | |
2778 | { | |
2779 | info->active = stub_unpack_int (pkt, length); | |
2780 | pkt += length; | |
2781 | mask = mask & ~(TAG_EXISTS); | |
2782 | if (length > 8) | |
2783 | { | |
8a3fe4f8 | 2784 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2785 | retval = 0; |
2786 | break; | |
2787 | } | |
2788 | continue; | |
2789 | } | |
2790 | if (tag == TAG_THREADNAME) | |
2791 | { | |
2792 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2793 | mask = mask & ~TAG_THREADNAME; | |
2794 | continue; | |
2795 | } | |
2796 | if (tag == TAG_DISPLAY) | |
2797 | { | |
2798 | pkt = unpack_string (pkt, &info->display[0], length); | |
2799 | mask = mask & ~TAG_DISPLAY; | |
2800 | continue; | |
2801 | } | |
2802 | if (tag == TAG_MOREDISPLAY) | |
2803 | { | |
2804 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2805 | mask = mask & ~TAG_MOREDISPLAY; | |
2806 | continue; | |
2807 | } | |
8a3fe4f8 | 2808 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2809 | break; /* Not a tag we know about. */ |
c906108c SS |
2810 | } |
2811 | return retval; | |
2812 | } | |
2813 | ||
2814 | static int | |
fba45db2 KB |
2815 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2816 | struct gdb_ext_thread_info *info) | |
c906108c | 2817 | { |
d01949b6 | 2818 | struct remote_state *rs = get_remote_state (); |
c906108c | 2819 | int result; |
c906108c | 2820 | |
2e9f7625 DJ |
2821 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2822 | putpkt (rs->buf); | |
6d820c5c | 2823 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2824 | |
2825 | if (rs->buf[0] == '\0') | |
2826 | return 0; | |
2827 | ||
2e9f7625 | 2828 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2829 | threadid, info); |
c906108c SS |
2830 | return result; |
2831 | } | |
2832 | ||
c906108c SS |
2833 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2834 | ||
2835 | static char * | |
fba45db2 KB |
2836 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2837 | threadref *nextthread) | |
c906108c SS |
2838 | { |
2839 | *pkt++ = 'q'; /* info query packet */ | |
2840 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2841 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2842 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2843 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2844 | *pkt = '\0'; | |
2845 | return pkt; | |
2846 | } | |
2847 | ||
2848 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2849 | ||
2850 | static int | |
fba45db2 KB |
2851 | parse_threadlist_response (char *pkt, int result_limit, |
2852 | threadref *original_echo, threadref *resultlist, | |
2853 | int *doneflag) | |
c906108c | 2854 | { |
d01949b6 | 2855 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2856 | char *limit; |
2857 | int count, resultcount, done; | |
2858 | ||
2859 | resultcount = 0; | |
2860 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2861 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2862 | /* done parse past here */ |
c906108c SS |
2863 | pkt = unpack_byte (pkt, &count); /* count field */ |
2864 | pkt = unpack_nibble (pkt, &done); | |
2865 | /* The first threadid is the argument threadid. */ | |
2866 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2867 | while ((count-- > 0) && (pkt < limit)) | |
2868 | { | |
2869 | pkt = unpack_threadid (pkt, resultlist++); | |
2870 | if (resultcount++ >= result_limit) | |
2871 | break; | |
2872 | } | |
2873 | if (doneflag) | |
2874 | *doneflag = done; | |
2875 | return resultcount; | |
2876 | } | |
2877 | ||
6dc54d91 PA |
2878 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2879 | qL packet is not supported, 0 on error and 1 on success. */ | |
2880 | ||
c906108c | 2881 | static int |
fba45db2 KB |
2882 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2883 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2884 | { |
d01949b6 | 2885 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2886 | int result = 1; |
2887 | ||
23860348 | 2888 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2889 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2890 | >= get_remote_packet_size ()) | |
ea9c271d | 2891 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2892 | |
6d820c5c DJ |
2893 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2894 | putpkt (rs->buf); | |
2895 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2896 | if (*rs->buf == '\0') |
6dc54d91 PA |
2897 | { |
2898 | /* Packet not supported. */ | |
2899 | return -1; | |
2900 | } | |
2901 | ||
2902 | *result_count = | |
2903 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2904 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2905 | |
0d031856 | 2906 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2907 | { |
23860348 MS |
2908 | /* FIXME: This is a good reason to drop the packet. */ |
2909 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2910 | /* Possabilities : |
2911 | retransmit immediatly - race conditions | |
2912 | retransmit after timeout - yes | |
2913 | exit | |
2914 | wait for packet, then exit | |
2915 | */ | |
8a3fe4f8 | 2916 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2917 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2918 | } |
2919 | if (*result_count <= 0) | |
2920 | { | |
2921 | if (*done != 1) | |
2922 | { | |
8a3fe4f8 | 2923 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2924 | result = 0; |
2925 | } | |
2926 | return result; /* break; */ | |
2927 | } | |
2928 | if (*result_count > result_limit) | |
2929 | { | |
2930 | *result_count = 0; | |
8a3fe4f8 | 2931 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2932 | return 0; |
2933 | } | |
2934 | return result; | |
2935 | } | |
2936 | ||
6dc54d91 PA |
2937 | /* Fetch the list of remote threads, with the qL packet, and call |
2938 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2939 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2940 | STEPFUNCTION returns false. If the packet is not supported, | |
2941 | returns -1. */ | |
c906108c | 2942 | |
c906108c | 2943 | static int |
fba45db2 KB |
2944 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2945 | int looplimit) | |
c906108c | 2946 | { |
0d031856 | 2947 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2948 | int done, i, result_count; |
2949 | int startflag = 1; | |
2950 | int result = 1; | |
2951 | int loopcount = 0; | |
c906108c SS |
2952 | |
2953 | done = 0; | |
2954 | while (!done) | |
2955 | { | |
2956 | if (loopcount++ > looplimit) | |
2957 | { | |
2958 | result = 0; | |
8a3fe4f8 | 2959 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2960 | break; |
2961 | } | |
6dc54d91 PA |
2962 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2963 | MAXTHREADLISTRESULTS, | |
2964 | &done, &result_count, | |
2965 | rs->resultthreadlist); | |
2966 | if (result <= 0) | |
2967 | break; | |
23860348 | 2968 | /* Clear for later iterations. */ |
c906108c SS |
2969 | startflag = 0; |
2970 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2971 | if (result_count >= 1) | |
0d031856 TT |
2972 | copy_threadref (&rs->nextthread, |
2973 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2974 | i = 0; |
2975 | while (result_count--) | |
6dc54d91 PA |
2976 | { |
2977 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2978 | { | |
2979 | result = 0; | |
2980 | break; | |
2981 | } | |
2982 | } | |
c906108c SS |
2983 | } |
2984 | return result; | |
2985 | } | |
2986 | ||
6dc54d91 PA |
2987 | /* A thread found on the remote target. */ |
2988 | ||
2989 | typedef struct thread_item | |
2990 | { | |
2991 | /* The thread's PTID. */ | |
2992 | ptid_t ptid; | |
2993 | ||
2994 | /* The thread's extra info. May be NULL. */ | |
2995 | char *extra; | |
2996 | ||
79efa585 SM |
2997 | /* The thread's name. May be NULL. */ |
2998 | char *name; | |
2999 | ||
6dc54d91 PA |
3000 | /* The core the thread was running on. -1 if not known. */ |
3001 | int core; | |
3002 | } thread_item_t; | |
3003 | DEF_VEC_O(thread_item_t); | |
3004 | ||
3005 | /* Context passed around to the various methods listing remote | |
3006 | threads. As new threads are found, they're added to the ITEMS | |
3007 | vector. */ | |
3008 | ||
3009 | struct threads_listing_context | |
3010 | { | |
3011 | /* The threads found on the remote target. */ | |
3012 | VEC (thread_item_t) *items; | |
3013 | }; | |
3014 | ||
80134cf5 PA |
3015 | /* Discard the contents of the constructed thread listing context. */ |
3016 | ||
3017 | static void | |
3018 | clear_threads_listing_context (void *p) | |
3019 | { | |
19ba03f4 SM |
3020 | struct threads_listing_context *context |
3021 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
3022 | int i; |
3023 | struct thread_item *item; | |
3024 | ||
3025 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
79efa585 SM |
3026 | { |
3027 | xfree (item->extra); | |
3028 | xfree (item->name); | |
3029 | } | |
80134cf5 PA |
3030 | |
3031 | VEC_free (thread_item_t, context->items); | |
3032 | } | |
3033 | ||
cbb8991c DB |
3034 | /* Remove the thread specified as the related_pid field of WS |
3035 | from the CONTEXT list. */ | |
3036 | ||
3037 | static void | |
3038 | threads_listing_context_remove (struct target_waitstatus *ws, | |
3039 | struct threads_listing_context *context) | |
3040 | { | |
3041 | struct thread_item *item; | |
3042 | int i; | |
3043 | ptid_t child_ptid = ws->value.related_pid; | |
3044 | ||
3045 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
3046 | { | |
3047 | if (ptid_equal (item->ptid, child_ptid)) | |
3048 | { | |
3049 | VEC_ordered_remove (thread_item_t, context->items, i); | |
3050 | break; | |
3051 | } | |
3052 | } | |
3053 | } | |
3054 | ||
c906108c | 3055 | static int |
6dc54d91 | 3056 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3057 | { |
19ba03f4 SM |
3058 | struct threads_listing_context *context |
3059 | = (struct threads_listing_context *) data; | |
6dc54d91 | 3060 | struct thread_item item; |
79d7f229 | 3061 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 3062 | |
6dc54d91 PA |
3063 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
3064 | item.core = -1; | |
2e3b657e | 3065 | item.name = NULL; |
6dc54d91 PA |
3066 | item.extra = NULL; |
3067 | ||
3068 | VEC_safe_push (thread_item_t, context->items, &item); | |
3069 | ||
c906108c SS |
3070 | return 1; /* continue iterator */ |
3071 | } | |
3072 | ||
3073 | #define CRAZY_MAX_THREADS 1000 | |
3074 | ||
39f77062 KB |
3075 | static ptid_t |
3076 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3077 | { |
d01949b6 | 3078 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3079 | |
3080 | putpkt ("qC"); | |
6d820c5c | 3081 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3082 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
3083 | { |
3084 | char *obuf; | |
3085 | ptid_t result; | |
3086 | ||
3087 | result = read_ptid (&rs->buf[2], &obuf); | |
3088 | if (*obuf != '\0' && remote_debug) | |
3089 | fprintf_unfiltered (gdb_stdlog, | |
3090 | "warning: garbage in qC reply\n"); | |
3091 | ||
3092 | return result; | |
3093 | } | |
c906108c SS |
3094 | else |
3095 | return oldpid; | |
3096 | } | |
3097 | ||
6dc54d91 | 3098 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3099 | |
6dc54d91 PA |
3100 | static int |
3101 | remote_get_threads_with_ql (struct target_ops *ops, | |
3102 | struct threads_listing_context *context) | |
c906108c | 3103 | { |
6dc54d91 PA |
3104 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3105 | CRAZY_MAX_THREADS) >= 0) | |
3106 | return 1; | |
3107 | ||
3108 | return 0; | |
c906108c SS |
3109 | } |
3110 | ||
dc146f7c VP |
3111 | #if defined(HAVE_LIBEXPAT) |
3112 | ||
dc146f7c VP |
3113 | static void |
3114 | start_thread (struct gdb_xml_parser *parser, | |
3115 | const struct gdb_xml_element *element, | |
3116 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
3117 | { | |
19ba03f4 SM |
3118 | struct threads_listing_context *data |
3119 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3120 | |
3121 | struct thread_item item; | |
3122 | char *id; | |
3d2c1d41 | 3123 | struct gdb_xml_value *attr; |
dc146f7c | 3124 | |
19ba03f4 | 3125 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
3126 | item.ptid = read_ptid (id, NULL); |
3127 | ||
3d2c1d41 PA |
3128 | attr = xml_find_attribute (attributes, "core"); |
3129 | if (attr != NULL) | |
3130 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
3131 | else |
3132 | item.core = -1; | |
3133 | ||
79efa585 | 3134 | attr = xml_find_attribute (attributes, "name"); |
e1961661 | 3135 | item.name = attr != NULL ? xstrdup ((const char *) attr->value) : NULL; |
79efa585 | 3136 | |
dc146f7c VP |
3137 | item.extra = 0; |
3138 | ||
3139 | VEC_safe_push (thread_item_t, data->items, &item); | |
3140 | } | |
3141 | ||
3142 | static void | |
3143 | end_thread (struct gdb_xml_parser *parser, | |
3144 | const struct gdb_xml_element *element, | |
3145 | void *user_data, const char *body_text) | |
3146 | { | |
19ba03f4 SM |
3147 | struct threads_listing_context *data |
3148 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3149 | |
3150 | if (body_text && *body_text) | |
2ae2a0b7 | 3151 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
3152 | } |
3153 | ||
3154 | const struct gdb_xml_attribute thread_attributes[] = { | |
3155 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3156 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3157 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3158 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3159 | }; | |
3160 | ||
3161 | const struct gdb_xml_element thread_children[] = { | |
3162 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3163 | }; | |
3164 | ||
3165 | const struct gdb_xml_element threads_children[] = { | |
3166 | { "thread", thread_attributes, thread_children, | |
3167 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3168 | start_thread, end_thread }, | |
3169 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3170 | }; | |
3171 | ||
3172 | const struct gdb_xml_element threads_elements[] = { | |
3173 | { "threads", NULL, threads_children, | |
3174 | GDB_XML_EF_NONE, NULL, NULL }, | |
3175 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3176 | }; | |
3177 | ||
3178 | #endif | |
3179 | ||
6dc54d91 | 3180 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3181 | |
6dc54d91 PA |
3182 | static int |
3183 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3184 | struct threads_listing_context *context) | |
0f71a2f6 | 3185 | { |
dc146f7c | 3186 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3187 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3188 | { |
6dc54d91 | 3189 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 3190 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 3191 | |
6dc54d91 | 3192 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3193 | { |
6dc54d91 PA |
3194 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
3195 | threads_elements, xml, context); | |
dc146f7c VP |
3196 | } |
3197 | ||
3198 | do_cleanups (back_to); | |
6dc54d91 | 3199 | return 1; |
dc146f7c VP |
3200 | } |
3201 | #endif | |
3202 | ||
6dc54d91 PA |
3203 | return 0; |
3204 | } | |
3205 | ||
3206 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3207 | ||
3208 | static int | |
3209 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3210 | struct threads_listing_context *context) | |
3211 | { | |
3212 | struct remote_state *rs = get_remote_state (); | |
3213 | ||
b80fafe3 | 3214 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3215 | { |
6dc54d91 PA |
3216 | char *bufp; |
3217 | ||
9d1f7ab2 | 3218 | putpkt ("qfThreadInfo"); |
6d820c5c | 3219 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3220 | bufp = rs->buf; |
9d1f7ab2 | 3221 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3222 | { |
9d1f7ab2 MS |
3223 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3224 | { | |
3225 | do | |
3226 | { | |
6dc54d91 PA |
3227 | struct thread_item item; |
3228 | ||
3229 | item.ptid = read_ptid (bufp, &bufp); | |
3230 | item.core = -1; | |
2e3b657e | 3231 | item.name = NULL; |
6dc54d91 PA |
3232 | item.extra = NULL; |
3233 | ||
3234 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3235 | } |
3236 | while (*bufp++ == ','); /* comma-separated list */ | |
3237 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3238 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3239 | bufp = rs->buf; |
9d1f7ab2 | 3240 | } |
6dc54d91 PA |
3241 | return 1; |
3242 | } | |
3243 | else | |
3244 | { | |
3245 | /* Packet not recognized. */ | |
3246 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3247 | } |
3248 | } | |
3249 | ||
6dc54d91 PA |
3250 | return 0; |
3251 | } | |
3252 | ||
e8032dde | 3253 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3254 | targets. */ |
3255 | ||
3256 | static void | |
e8032dde | 3257 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 | 3258 | { |
6dc54d91 PA |
3259 | struct threads_listing_context context; |
3260 | struct cleanup *old_chain; | |
ab970af1 | 3261 | int got_list = 0; |
e8032dde | 3262 | |
6dc54d91 PA |
3263 | context.items = NULL; |
3264 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3265 | ||
3266 | /* We have a few different mechanisms to fetch the thread list. Try | |
3267 | them all, starting with the most preferred one first, falling | |
3268 | back to older methods. */ | |
3269 | if (remote_get_threads_with_qxfer (ops, &context) | |
3270 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3271 | || remote_get_threads_with_ql (ops, &context)) | |
3272 | { | |
3273 | int i; | |
3274 | struct thread_item *item; | |
ab970af1 PA |
3275 | struct thread_info *tp, *tmp; |
3276 | ||
3277 | got_list = 1; | |
3278 | ||
7d1a114c PA |
3279 | if (VEC_empty (thread_item_t, context.items) |
3280 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3281 | { | |
3282 | /* Some targets don't really support threads, but still | |
3283 | reply an (empty) thread list in response to the thread | |
3284 | listing packets, instead of replying "packet not | |
3285 | supported". Exit early so we don't delete the main | |
3286 | thread. */ | |
3287 | do_cleanups (old_chain); | |
3288 | return; | |
3289 | } | |
3290 | ||
ab970af1 PA |
3291 | /* CONTEXT now holds the current thread list on the remote |
3292 | target end. Delete GDB-side threads no longer found on the | |
3293 | target. */ | |
8a06aea7 | 3294 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3295 | { |
ab970af1 PA |
3296 | for (i = 0; |
3297 | VEC_iterate (thread_item_t, context.items, i, item); | |
3298 | ++i) | |
3299 | { | |
3300 | if (ptid_equal (item->ptid, tp->ptid)) | |
3301 | break; | |
3302 | } | |
3303 | ||
3304 | if (i == VEC_length (thread_item_t, context.items)) | |
3305 | { | |
3306 | /* Not found. */ | |
3307 | delete_thread (tp->ptid); | |
3308 | } | |
cbb8991c DB |
3309 | } |
3310 | ||
3311 | /* Remove any unreported fork child threads from CONTEXT so | |
3312 | that we don't interfere with follow fork, which is where | |
3313 | creation of such threads is handled. */ | |
3314 | remove_new_fork_children (&context); | |
74531fed | 3315 | |
ab970af1 | 3316 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3317 | for (i = 0; |
3318 | VEC_iterate (thread_item_t, context.items, i, item); | |
3319 | ++i) | |
3320 | { | |
3321 | if (!ptid_equal (item->ptid, null_ptid)) | |
3322 | { | |
3323 | struct private_thread_info *info; | |
3324 | /* In non-stop mode, we assume new found threads are | |
0d5b594f PA |
3325 | executing until proven otherwise with a stop reply. |
3326 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3327 | stopped. */ |
0d5b594f | 3328 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3329 | |
0d5b594f | 3330 | remote_notice_new_inferior (item->ptid, executing); |
6dc54d91 | 3331 | |
85ad3aaf | 3332 | info = get_private_info_ptid (item->ptid); |
6dc54d91 PA |
3333 | info->core = item->core; |
3334 | info->extra = item->extra; | |
3335 | item->extra = NULL; | |
79efa585 SM |
3336 | info->name = item->name; |
3337 | item->name = NULL; | |
6dc54d91 PA |
3338 | } |
3339 | } | |
3340 | } | |
3341 | ||
ab970af1 PA |
3342 | if (!got_list) |
3343 | { | |
3344 | /* If no thread listing method is supported, then query whether | |
3345 | each known thread is alive, one by one, with the T packet. | |
3346 | If the target doesn't support threads at all, then this is a | |
3347 | no-op. See remote_thread_alive. */ | |
3348 | prune_threads (); | |
3349 | } | |
3350 | ||
6dc54d91 | 3351 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3352 | } |
3353 | ||
802188a7 | 3354 | /* |
9d1f7ab2 MS |
3355 | * Collect a descriptive string about the given thread. |
3356 | * The target may say anything it wants to about the thread | |
3357 | * (typically info about its blocked / runnable state, name, etc.). | |
3358 | * This string will appear in the info threads display. | |
802188a7 | 3359 | * |
9d1f7ab2 MS |
3360 | * Optional: targets are not required to implement this function. |
3361 | */ | |
3362 | ||
7a114964 | 3363 | static const char * |
c15906d8 | 3364 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3365 | { |
d01949b6 | 3366 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3367 | int result; |
3368 | int set; | |
3369 | threadref id; | |
3370 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3371 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3372 | int n = 0; /* position in display_buf */ |
3373 | ||
5d93a237 | 3374 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3375 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3376 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3377 | |
60e569b9 | 3378 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3379 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3380 | /* This is the main thread which was added by GDB. The remote |
3381 | server doesn't know about it. */ | |
3382 | return NULL; | |
3383 | ||
4082afcc | 3384 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3385 | { |
3386 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3387 | |
fe978cb0 PA |
3388 | if (info && info->priv) |
3389 | return info->priv->extra; | |
dc146f7c VP |
3390 | else |
3391 | return NULL; | |
3392 | } | |
3393 | ||
b80fafe3 | 3394 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3395 | { |
82f73884 PA |
3396 | char *b = rs->buf; |
3397 | char *endb = rs->buf + get_remote_packet_size (); | |
3398 | ||
3399 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3400 | b += strlen (b); | |
3401 | write_ptid (b, endb, tp->ptid); | |
3402 | ||
2e9f7625 | 3403 | putpkt (rs->buf); |
6d820c5c | 3404 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3405 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3406 | { |
325fac50 | 3407 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3408 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3409 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3410 | return display_buf; |
3411 | } | |
0f71a2f6 | 3412 | } |
9d1f7ab2 MS |
3413 | |
3414 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3415 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3416 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3417 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3418 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3419 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3420 | if (threadinfo.active) | |
0f71a2f6 | 3421 | { |
9d1f7ab2 | 3422 | if (*threadinfo.shortname) |
2bc416ba | 3423 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3424 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3425 | if (*threadinfo.display) |
2bc416ba | 3426 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3427 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3428 | if (*threadinfo.more_display) |
2bc416ba | 3429 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3430 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3431 | |
3432 | if (n > 0) | |
c5aa993b | 3433 | { |
23860348 | 3434 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3435 | if (',' == display_buf[n-1]) |
3436 | display_buf[n-1] = ' '; | |
3437 | return display_buf; | |
c5aa993b | 3438 | } |
0f71a2f6 | 3439 | } |
9d1f7ab2 | 3440 | return NULL; |
0f71a2f6 | 3441 | } |
c906108c | 3442 | \f |
c5aa993b | 3443 | |
0fb4aa4b | 3444 | static int |
61fc905d | 3445 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3446 | struct static_tracepoint_marker *marker) |
3447 | { | |
3448 | struct remote_state *rs = get_remote_state (); | |
3449 | char *p = rs->buf; | |
3450 | ||
bba74b36 | 3451 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3452 | p += strlen (p); |
3453 | p += hexnumstr (p, addr); | |
3454 | putpkt (rs->buf); | |
3455 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3456 | p = rs->buf; | |
3457 | ||
3458 | if (*p == 'E') | |
3459 | error (_("Remote failure reply: %s"), p); | |
3460 | ||
3461 | if (*p++ == 'm') | |
3462 | { | |
3463 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3464 | return 1; | |
3465 | } | |
3466 | ||
3467 | return 0; | |
3468 | } | |
3469 | ||
0fb4aa4b | 3470 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3471 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3472 | const char *strid) | |
0fb4aa4b PA |
3473 | { |
3474 | struct remote_state *rs = get_remote_state (); | |
3475 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3476 | struct static_tracepoint_marker *marker = NULL; | |
3477 | struct cleanup *old_chain; | |
3478 | char *p; | |
3479 | ||
3480 | /* Ask for a first packet of static tracepoint marker | |
3481 | definition. */ | |
3482 | putpkt ("qTfSTM"); | |
3483 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3484 | p = rs->buf; | |
3485 | if (*p == 'E') | |
3486 | error (_("Remote failure reply: %s"), p); | |
3487 | ||
3488 | old_chain = make_cleanup (free_current_marker, &marker); | |
3489 | ||
3490 | while (*p++ == 'm') | |
3491 | { | |
3492 | if (marker == NULL) | |
3493 | marker = XCNEW (struct static_tracepoint_marker); | |
3494 | ||
3495 | do | |
3496 | { | |
3497 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3498 | ||
3499 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3500 | { | |
3501 | VEC_safe_push (static_tracepoint_marker_p, | |
3502 | markers, marker); | |
3503 | marker = NULL; | |
3504 | } | |
3505 | else | |
3506 | { | |
3507 | release_static_tracepoint_marker (marker); | |
3508 | memset (marker, 0, sizeof (*marker)); | |
3509 | } | |
3510 | } | |
3511 | while (*p++ == ','); /* comma-separated list */ | |
3512 | /* Ask for another packet of static tracepoint definition. */ | |
3513 | putpkt ("qTsSTM"); | |
3514 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3515 | p = rs->buf; | |
3516 | } | |
3517 | ||
3518 | do_cleanups (old_chain); | |
3519 | return markers; | |
3520 | } | |
3521 | ||
3522 | \f | |
10760264 JB |
3523 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3524 | ||
3525 | static ptid_t | |
1e6b91a4 | 3526 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3527 | { |
ba348170 | 3528 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3529 | } |
3530 | \f | |
3531 | ||
24b06219 | 3532 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3533 | |
3534 | static void | |
fba45db2 | 3535 | extended_remote_restart (void) |
c906108c | 3536 | { |
d01949b6 | 3537 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3538 | |
3539 | /* Send the restart command; for reasons I don't understand the | |
3540 | remote side really expects a number after the "R". */ | |
ea9c271d | 3541 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3542 | putpkt (rs->buf); |
c906108c | 3543 | |
ad9a8f3f | 3544 | remote_fileio_reset (); |
c906108c SS |
3545 | } |
3546 | \f | |
3547 | /* Clean up connection to a remote debugger. */ | |
3548 | ||
c906108c | 3549 | static void |
de90e03d | 3550 | remote_close (struct target_ops *self) |
c906108c | 3551 | { |
5d93a237 TT |
3552 | struct remote_state *rs = get_remote_state (); |
3553 | ||
3554 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3555 | return; /* already closed */ |
3556 | ||
048094ac | 3557 | /* Make sure we leave stdin registered in the event loop. */ |
e3594fd1 | 3558 | remote_terminal_ours (self); |
ce5ce7ed | 3559 | |
5d93a237 TT |
3560 | serial_close (rs->remote_desc); |
3561 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3562 | |
3563 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3564 | of all the inferiors and their threads we were controlling. |
3565 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3566 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3567 | inferior_ptid = null_ptid; |
f67fd822 | 3568 | discard_all_inferiors (); |
ce5ce7ed | 3569 | |
f48ff2a7 YQ |
3570 | /* We are closing the remote target, so we should discard |
3571 | everything of this target. */ | |
bcc75809 | 3572 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3573 | |
3574 | if (remote_async_inferior_event_token) | |
3575 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3576 | |
5965e028 | 3577 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3578 | |
3579 | trace_reset_local_state (); | |
c906108c SS |
3580 | } |
3581 | ||
23860348 | 3582 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3583 | |
3584 | static void | |
fba45db2 | 3585 | get_offsets (void) |
c906108c | 3586 | { |
d01949b6 | 3587 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3588 | char *buf; |
085dd6e6 | 3589 | char *ptr; |
31d99776 DJ |
3590 | int lose, num_segments = 0, do_sections, do_segments; |
3591 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3592 | struct section_offsets *offs; |
31d99776 DJ |
3593 | struct symfile_segment_data *data; |
3594 | ||
3595 | if (symfile_objfile == NULL) | |
3596 | return; | |
c906108c SS |
3597 | |
3598 | putpkt ("qOffsets"); | |
6d820c5c | 3599 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3600 | buf = rs->buf; |
c906108c SS |
3601 | |
3602 | if (buf[0] == '\000') | |
3603 | return; /* Return silently. Stub doesn't support | |
23860348 | 3604 | this command. */ |
c906108c SS |
3605 | if (buf[0] == 'E') |
3606 | { | |
8a3fe4f8 | 3607 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3608 | return; |
3609 | } | |
3610 | ||
3611 | /* Pick up each field in turn. This used to be done with scanf, but | |
3612 | scanf will make trouble if CORE_ADDR size doesn't match | |
3613 | conversion directives correctly. The following code will work | |
3614 | with any size of CORE_ADDR. */ | |
3615 | text_addr = data_addr = bss_addr = 0; | |
3616 | ptr = buf; | |
3617 | lose = 0; | |
3618 | ||
61012eef | 3619 | if (startswith (ptr, "Text=")) |
c906108c SS |
3620 | { |
3621 | ptr += 5; | |
3622 | /* Don't use strtol, could lose on big values. */ | |
3623 | while (*ptr && *ptr != ';') | |
3624 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3625 | |
61012eef | 3626 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3627 | { |
3628 | ptr += 6; | |
3629 | while (*ptr && *ptr != ';') | |
3630 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3631 | } | |
3632 | else | |
3633 | lose = 1; | |
3634 | ||
61012eef | 3635 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3636 | { |
3637 | ptr += 5; | |
3638 | while (*ptr && *ptr != ';') | |
3639 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3640 | |
31d99776 DJ |
3641 | if (bss_addr != data_addr) |
3642 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3643 | } | |
3644 | else | |
3645 | lose = 1; | |
3646 | } | |
61012eef | 3647 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3648 | { |
31d99776 DJ |
3649 | ptr += 8; |
3650 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3651 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3652 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3653 | num_segments = 1; | |
3654 | ||
61012eef | 3655 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3656 | { |
3657 | ptr += 9; | |
3658 | while (*ptr && *ptr != ';') | |
3659 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3660 | num_segments++; | |
3661 | } | |
c906108c SS |
3662 | } |
3663 | else | |
3664 | lose = 1; | |
3665 | ||
3666 | if (lose) | |
8a3fe4f8 | 3667 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3668 | else if (*ptr != '\0') |
3669 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3670 | |
802188a7 | 3671 | offs = ((struct section_offsets *) |
a39a16c4 | 3672 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3673 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3674 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3675 | |
31d99776 DJ |
3676 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3677 | do_segments = (data != NULL); | |
3678 | do_sections = num_segments == 0; | |
c906108c | 3679 | |
28c32713 | 3680 | if (num_segments > 0) |
31d99776 | 3681 | { |
31d99776 DJ |
3682 | segments[0] = text_addr; |
3683 | segments[1] = data_addr; | |
3684 | } | |
28c32713 JB |
3685 | /* If we have two segments, we can still try to relocate everything |
3686 | by assuming that the .text and .data offsets apply to the whole | |
3687 | text and data segments. Convert the offsets given in the packet | |
3688 | to base addresses for symfile_map_offsets_to_segments. */ | |
3689 | else if (data && data->num_segments == 2) | |
3690 | { | |
3691 | segments[0] = data->segment_bases[0] + text_addr; | |
3692 | segments[1] = data->segment_bases[1] + data_addr; | |
3693 | num_segments = 2; | |
3694 | } | |
8d385431 DJ |
3695 | /* If the object file has only one segment, assume that it is text |
3696 | rather than data; main programs with no writable data are rare, | |
3697 | but programs with no code are useless. Of course the code might | |
3698 | have ended up in the data segment... to detect that we would need | |
3699 | the permissions here. */ | |
3700 | else if (data && data->num_segments == 1) | |
3701 | { | |
3702 | segments[0] = data->segment_bases[0] + text_addr; | |
3703 | num_segments = 1; | |
3704 | } | |
28c32713 JB |
3705 | /* There's no way to relocate by segment. */ |
3706 | else | |
3707 | do_segments = 0; | |
31d99776 DJ |
3708 | |
3709 | if (do_segments) | |
3710 | { | |
3711 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3712 | offs, num_segments, segments); | |
3713 | ||
3714 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3715 | error (_("Can not handle qOffsets TextSeg " |
3716 | "response with this symbol file")); | |
31d99776 DJ |
3717 | |
3718 | if (ret > 0) | |
3719 | do_sections = 0; | |
3720 | } | |
c906108c | 3721 | |
9ef895d6 DJ |
3722 | if (data) |
3723 | free_symfile_segment_data (data); | |
31d99776 DJ |
3724 | |
3725 | if (do_sections) | |
3726 | { | |
3727 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3728 | ||
3e43a32a MS |
3729 | /* This is a temporary kludge to force data and bss to use the |
3730 | same offsets because that's what nlmconv does now. The real | |
3731 | solution requires changes to the stub and remote.c that I | |
3732 | don't have time to do right now. */ | |
31d99776 DJ |
3733 | |
3734 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3735 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3736 | } | |
c906108c SS |
3737 | |
3738 | objfile_relocate (symfile_objfile, offs); | |
3739 | } | |
3740 | ||
9a7071a8 JB |
3741 | /* Send interrupt_sequence to remote target. */ |
3742 | static void | |
eeae04df | 3743 | send_interrupt_sequence (void) |
9a7071a8 | 3744 | { |
5d93a237 TT |
3745 | struct remote_state *rs = get_remote_state (); |
3746 | ||
9a7071a8 | 3747 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3748 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3749 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3750 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3751 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3752 | { | |
5d93a237 | 3753 | serial_send_break (rs->remote_desc); |
c33e31fd | 3754 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3755 | } |
3756 | else | |
3757 | internal_error (__FILE__, __LINE__, | |
3758 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3759 | interrupt_sequence_mode); | |
3760 | } | |
3761 | ||
3405876a PA |
3762 | |
3763 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3764 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3765 | ||
3766 | static ptid_t | |
3767 | stop_reply_extract_thread (char *stop_reply) | |
3768 | { | |
3769 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3770 | { | |
3771 | char *p; | |
3772 | ||
3773 | /* Txx r:val ; r:val (...) */ | |
3774 | p = &stop_reply[3]; | |
3775 | ||
3776 | /* Look for "register" named "thread". */ | |
3777 | while (*p != '\0') | |
3778 | { | |
3779 | char *p1; | |
3780 | ||
3781 | p1 = strchr (p, ':'); | |
3782 | if (p1 == NULL) | |
3783 | return null_ptid; | |
3784 | ||
3785 | if (strncmp (p, "thread", p1 - p) == 0) | |
3786 | return read_ptid (++p1, &p); | |
3787 | ||
3788 | p1 = strchr (p, ';'); | |
3789 | if (p1 == NULL) | |
3790 | return null_ptid; | |
3791 | p1++; | |
3792 | ||
3793 | p = p1; | |
3794 | } | |
3795 | } | |
3796 | ||
3797 | return null_ptid; | |
3798 | } | |
3799 | ||
b7ea362b PA |
3800 | /* Determine the remote side's current thread. If we have a stop |
3801 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3802 | "thread" register we can extract the current thread from. If not, | |
3803 | ask the remote which is the current thread with qC. The former | |
3804 | method avoids a roundtrip. */ | |
3805 | ||
3806 | static ptid_t | |
3807 | get_current_thread (char *wait_status) | |
3808 | { | |
6a49a997 | 3809 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3810 | |
3811 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3812 | the target architecture, which we haven't yet fully determined at | |
3813 | this point. */ | |
3814 | if (wait_status != NULL) | |
3815 | ptid = stop_reply_extract_thread (wait_status); | |
3816 | if (ptid_equal (ptid, null_ptid)) | |
3817 | ptid = remote_current_thread (inferior_ptid); | |
3818 | ||
3819 | return ptid; | |
3820 | } | |
3821 | ||
49c62f2e PA |
3822 | /* Query the remote target for which is the current thread/process, |
3823 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3824 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3825 | to return the current thread. |
3826 | ||
3827 | This function is called after handling the '?' or 'vRun' packets, | |
3828 | whose response is a stop reply from which we can also try | |
3829 | extracting the thread. If the target doesn't support the explicit | |
3830 | qC query, we infer the current thread from that stop reply, passed | |
3831 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3832 | |
3833 | static void | |
3405876a | 3834 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3835 | { |
3836 | struct remote_state *rs = get_remote_state (); | |
3837 | int fake_pid_p = 0; | |
49c62f2e PA |
3838 | |
3839 | inferior_ptid = null_ptid; | |
3840 | ||
b7ea362b | 3841 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 3842 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 3843 | |
87215ad1 | 3844 | if (curr_ptid != null_ptid) |
49c62f2e PA |
3845 | { |
3846 | if (!remote_multi_process_p (rs)) | |
3847 | fake_pid_p = 1; | |
49c62f2e PA |
3848 | } |
3849 | else | |
3850 | { | |
3851 | /* Without this, some commands which require an active target | |
3852 | (such as kill) won't work. This variable serves (at least) | |
3853 | double duty as both the pid of the target process (if it has | |
3854 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 3855 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
3856 | fake_pid_p = 1; |
3857 | } | |
3858 | ||
87215ad1 | 3859 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 3860 | |
87215ad1 SDJ |
3861 | /* Add the main thread and switch to it. Don't try reading |
3862 | registers yet, since we haven't fetched the target description | |
3863 | yet. */ | |
3864 | thread_info *tp = add_thread_silent (curr_ptid); | |
3865 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
3866 | } |
3867 | ||
6efcd9a8 PA |
3868 | /* Print info about a thread that was found already stopped on |
3869 | connection. */ | |
3870 | ||
3871 | static void | |
3872 | print_one_stopped_thread (struct thread_info *thread) | |
3873 | { | |
3874 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3875 | ||
3876 | switch_to_thread (thread->ptid); | |
3877 | stop_pc = get_frame_pc (get_current_frame ()); | |
3878 | set_current_sal_from_frame (get_current_frame ()); | |
3879 | ||
3880 | thread->suspend.waitstatus_pending_p = 0; | |
3881 | ||
3882 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3883 | { | |
3884 | enum gdb_signal sig = ws->value.sig; | |
3885 | ||
3886 | if (signal_print_state (sig)) | |
3887 | observer_notify_signal_received (sig); | |
3888 | } | |
3889 | observer_notify_normal_stop (NULL, 1); | |
3890 | } | |
3891 | ||
221e1a37 PA |
3892 | /* Process all initial stop replies the remote side sent in response |
3893 | to the ? packet. These indicate threads that were already stopped | |
3894 | on initial connection. We mark these threads as stopped and print | |
3895 | their current frame before giving the user the prompt. */ | |
3896 | ||
3897 | static void | |
6efcd9a8 | 3898 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3899 | { |
3900 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3901 | struct inferior *inf; |
3902 | struct thread_info *thread; | |
3903 | struct thread_info *selected = NULL; | |
3904 | struct thread_info *lowest_stopped = NULL; | |
3905 | struct thread_info *first = NULL; | |
221e1a37 PA |
3906 | |
3907 | /* Consume the initial pending events. */ | |
3908 | while (pending_stop_replies-- > 0) | |
3909 | { | |
3910 | ptid_t waiton_ptid = minus_one_ptid; | |
3911 | ptid_t event_ptid; | |
3912 | struct target_waitstatus ws; | |
3913 | int ignore_event = 0; | |
6efcd9a8 | 3914 | struct thread_info *thread; |
221e1a37 PA |
3915 | |
3916 | memset (&ws, 0, sizeof (ws)); | |
3917 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3918 | if (remote_debug) | |
3919 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3920 | ||
3921 | switch (ws.kind) | |
3922 | { | |
3923 | case TARGET_WAITKIND_IGNORE: | |
3924 | case TARGET_WAITKIND_NO_RESUMED: | |
3925 | case TARGET_WAITKIND_SIGNALLED: | |
3926 | case TARGET_WAITKIND_EXITED: | |
3927 | /* We shouldn't see these, but if we do, just ignore. */ | |
3928 | if (remote_debug) | |
3929 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3930 | ignore_event = 1; | |
3931 | break; | |
3932 | ||
3933 | case TARGET_WAITKIND_EXECD: | |
3934 | xfree (ws.value.execd_pathname); | |
3935 | break; | |
3936 | default: | |
3937 | break; | |
3938 | } | |
3939 | ||
3940 | if (ignore_event) | |
3941 | continue; | |
3942 | ||
6efcd9a8 | 3943 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3944 | |
3945 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3946 | { | |
3947 | enum gdb_signal sig = ws.value.sig; | |
3948 | ||
3949 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3950 | instead of signal 0. Suppress it. */ | |
3951 | if (sig == GDB_SIGNAL_TRAP) | |
3952 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3953 | thread->suspend.stop_signal = sig; |
3954 | ws.value.sig = sig; | |
3955 | } | |
221e1a37 | 3956 | |
6efcd9a8 PA |
3957 | thread->suspend.waitstatus = ws; |
3958 | ||
3959 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3960 | || ws.value.sig != GDB_SIGNAL_0) | |
3961 | thread->suspend.waitstatus_pending_p = 1; | |
3962 | ||
3963 | set_executing (event_ptid, 0); | |
3964 | set_running (event_ptid, 0); | |
85ad3aaf | 3965 | thread->priv->vcont_resumed = 0; |
6efcd9a8 PA |
3966 | } |
3967 | ||
3968 | /* "Notice" the new inferiors before anything related to | |
3969 | registers/memory. */ | |
3970 | ALL_INFERIORS (inf) | |
3971 | { | |
3972 | if (inf->pid == 0) | |
3973 | continue; | |
3974 | ||
3975 | inf->needs_setup = 1; | |
3976 | ||
3977 | if (non_stop) | |
3978 | { | |
3979 | thread = any_live_thread_of_process (inf->pid); | |
3980 | notice_new_inferior (thread->ptid, | |
3981 | thread->state == THREAD_RUNNING, | |
3982 | from_tty); | |
3983 | } | |
3984 | } | |
3985 | ||
3986 | /* If all-stop on top of non-stop, pause all threads. Note this | |
3987 | records the threads' stop pc, so must be done after "noticing" | |
3988 | the inferiors. */ | |
3989 | if (!non_stop) | |
3990 | { | |
3991 | stop_all_threads (); | |
3992 | ||
3993 | /* If all threads of an inferior were already stopped, we | |
3994 | haven't setup the inferior yet. */ | |
3995 | ALL_INFERIORS (inf) | |
3996 | { | |
3997 | if (inf->pid == 0) | |
3998 | continue; | |
221e1a37 | 3999 | |
6efcd9a8 PA |
4000 | if (inf->needs_setup) |
4001 | { | |
4002 | thread = any_live_thread_of_process (inf->pid); | |
4003 | switch_to_thread_no_regs (thread); | |
4004 | setup_inferior (0); | |
4005 | } | |
4006 | } | |
221e1a37 | 4007 | } |
6efcd9a8 PA |
4008 | |
4009 | /* Now go over all threads that are stopped, and print their current | |
4010 | frame. If all-stop, then if there's a signalled thread, pick | |
4011 | that as current. */ | |
4012 | ALL_NON_EXITED_THREADS (thread) | |
4013 | { | |
6efcd9a8 PA |
4014 | if (first == NULL) |
4015 | first = thread; | |
4016 | ||
4017 | if (!non_stop) | |
4018 | set_running (thread->ptid, 0); | |
4019 | else if (thread->state != THREAD_STOPPED) | |
4020 | continue; | |
4021 | ||
6efcd9a8 PA |
4022 | if (selected == NULL |
4023 | && thread->suspend.waitstatus_pending_p) | |
4024 | selected = thread; | |
4025 | ||
5d5658a1 PA |
4026 | if (lowest_stopped == NULL |
4027 | || thread->inf->num < lowest_stopped->inf->num | |
4028 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4029 | lowest_stopped = thread; |
4030 | ||
4031 | if (non_stop) | |
4032 | print_one_stopped_thread (thread); | |
4033 | } | |
4034 | ||
4035 | /* In all-stop, we only print the status of one thread, and leave | |
4036 | others with their status pending. */ | |
4037 | if (!non_stop) | |
4038 | { | |
4039 | thread = selected; | |
4040 | if (thread == NULL) | |
4041 | thread = lowest_stopped; | |
4042 | if (thread == NULL) | |
4043 | thread = first; | |
4044 | ||
4045 | print_one_stopped_thread (thread); | |
4046 | } | |
4047 | ||
4048 | /* For "info program". */ | |
4049 | thread = inferior_thread (); | |
4050 | if (thread->state == THREAD_STOPPED) | |
4051 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4052 | } |
4053 | ||
048094ac PA |
4054 | /* Start the remote connection and sync state. */ |
4055 | ||
9cbc821d | 4056 | static void |
04bd08de | 4057 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 4058 | { |
c8d104ad PA |
4059 | struct remote_state *rs = get_remote_state (); |
4060 | struct packet_config *noack_config; | |
2d717e4f | 4061 | char *wait_status = NULL; |
8621d6a9 | 4062 | |
048094ac PA |
4063 | /* Signal other parts that we're going through the initial setup, |
4064 | and so things may not be stable yet. E.g., we don't try to | |
4065 | install tracepoints until we've relocated symbols. Also, a | |
4066 | Ctrl-C before we're connected and synced up can't interrupt the | |
4067 | target. Instead, it offers to drop the (potentially wedged) | |
4068 | connection. */ | |
4069 | rs->starting_up = 1; | |
4070 | ||
522002f9 | 4071 | QUIT; |
c906108c | 4072 | |
9a7071a8 JB |
4073 | if (interrupt_on_connect) |
4074 | send_interrupt_sequence (); | |
4075 | ||
57e12211 | 4076 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4077 | remote_serial_write ("+", 1); |
1e51243a | 4078 | |
c8d104ad PA |
4079 | /* The first packet we send to the target is the optional "supported |
4080 | packets" request. If the target can answer this, it will tell us | |
4081 | which later probes to skip. */ | |
4082 | remote_query_supported (); | |
4083 | ||
d914c394 | 4084 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4085 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4086 | remote_set_permissions (target); |
d914c394 | 4087 | |
57809e5e JK |
4088 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4089 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4090 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4091 | invalid reply and GDB would return error in | |
4092 | remote_hostio_set_filesystem, making remote files access impossible. | |
4093 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4094 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4095 | { | |
4096 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4097 | ||
4098 | putpkt (v_mustreplyempty); | |
4099 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4100 | if (strcmp (rs->buf, "OK") == 0) | |
4101 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4102 | else if (strcmp (rs->buf, "") != 0) | |
4103 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4104 | rs->buf); | |
4105 | } | |
4106 | ||
c8d104ad PA |
4107 | /* Next, we possibly activate noack mode. |
4108 | ||
4109 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4110 | enable noack mode if the stub reported a wish for it with | |
4111 | qSupported. | |
4112 | ||
4113 | If set to TRUE, then enable noack mode even if the stub didn't | |
4114 | report it in qSupported. If the stub doesn't reply OK, the | |
4115 | session ends with an error. | |
4116 | ||
4117 | If FALSE, then don't activate noack mode, regardless of what the | |
4118 | stub claimed should be the default with qSupported. */ | |
4119 | ||
4120 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4121 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4122 | { |
4123 | putpkt ("QStartNoAckMode"); | |
4124 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4125 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4126 | rs->noack_mode = 1; | |
4127 | } | |
4128 | ||
04bd08de | 4129 | if (extended_p) |
5fe04517 PA |
4130 | { |
4131 | /* Tell the remote that we are using the extended protocol. */ | |
4132 | putpkt ("!"); | |
4133 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4134 | } | |
4135 | ||
9b224c5e PA |
4136 | /* Let the target know which signals it is allowed to pass down to |
4137 | the program. */ | |
4138 | update_signals_program_target (); | |
4139 | ||
d962ef82 DJ |
4140 | /* Next, if the target can specify a description, read it. We do |
4141 | this before anything involving memory or registers. */ | |
4142 | target_find_description (); | |
4143 | ||
6c95b8df PA |
4144 | /* Next, now that we know something about the target, update the |
4145 | address spaces in the program spaces. */ | |
4146 | update_address_spaces (); | |
4147 | ||
50c71eaf PA |
4148 | /* On OSs where the list of libraries is global to all |
4149 | processes, we fetch them early. */ | |
f5656ead | 4150 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4151 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4152 | |
6efcd9a8 | 4153 | if (target_is_non_stop_p ()) |
74531fed | 4154 | { |
4082afcc | 4155 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4156 | error (_("Non-stop mode requested, but remote " |
4157 | "does not support non-stop")); | |
74531fed PA |
4158 | |
4159 | putpkt ("QNonStop:1"); | |
4160 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4161 | ||
4162 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4163 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4164 | |
4165 | /* Find about threads and processes the stub is already | |
4166 | controlling. We default to adding them in the running state. | |
4167 | The '?' query below will then tell us about which threads are | |
4168 | stopped. */ | |
e8032dde | 4169 | remote_update_thread_list (target); |
74531fed | 4170 | } |
4082afcc | 4171 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4172 | { |
4173 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4174 | Request it explicitly. */ |
74531fed PA |
4175 | putpkt ("QNonStop:0"); |
4176 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4177 | ||
4178 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4179 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4180 | } |
4181 | ||
a0743c90 YQ |
4182 | /* Upload TSVs regardless of whether the target is running or not. The |
4183 | remote stub, such as GDBserver, may have some predefined or builtin | |
4184 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4185 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4186 | { |
4187 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4188 | ||
181e3713 | 4189 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4190 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4191 | } | |
4192 | ||
2d717e4f DJ |
4193 | /* Check whether the target is running now. */ |
4194 | putpkt ("?"); | |
4195 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4196 | ||
6efcd9a8 | 4197 | if (!target_is_non_stop_p ()) |
2d717e4f | 4198 | { |
74531fed | 4199 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4200 | { |
04bd08de | 4201 | if (!extended_p) |
74531fed | 4202 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4203 | |
4204 | /* We're connected, but not running. Drop out before we | |
4205 | call start_remote. */ | |
e278ad5b | 4206 | rs->starting_up = 0; |
c35b1492 | 4207 | return; |
2d717e4f DJ |
4208 | } |
4209 | else | |
74531fed | 4210 | { |
74531fed | 4211 | /* Save the reply for later. */ |
224c3ddb | 4212 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4213 | strcpy (wait_status, rs->buf); |
4214 | } | |
4215 | ||
b7ea362b | 4216 | /* Fetch thread list. */ |
e8032dde | 4217 | target_update_thread_list (); |
b7ea362b | 4218 | |
74531fed PA |
4219 | /* Let the stub know that we want it to return the thread. */ |
4220 | set_continue_thread (minus_one_ptid); | |
4221 | ||
b7ea362b PA |
4222 | if (thread_count () == 0) |
4223 | { | |
4224 | /* Target has no concept of threads at all. GDB treats | |
4225 | non-threaded target as single-threaded; add a main | |
4226 | thread. */ | |
4227 | add_current_inferior_and_thread (wait_status); | |
4228 | } | |
4229 | else | |
4230 | { | |
4231 | /* We have thread information; select the thread the target | |
4232 | says should be current. If we're reconnecting to a | |
4233 | multi-threaded program, this will ideally be the thread | |
4234 | that last reported an event before GDB disconnected. */ | |
4235 | inferior_ptid = get_current_thread (wait_status); | |
4236 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4237 | { | |
4238 | /* Odd... The target was able to list threads, but not | |
4239 | tell us which thread was current (no "thread" | |
4240 | register in T stop reply?). Just pick the first | |
4241 | thread in the thread list then. */ | |
c9f35b34 KB |
4242 | |
4243 | if (remote_debug) | |
4244 | fprintf_unfiltered (gdb_stdlog, | |
4245 | "warning: couldn't determine remote " | |
4246 | "current thread; picking first in list.\n"); | |
4247 | ||
b7ea362b PA |
4248 | inferior_ptid = thread_list->ptid; |
4249 | } | |
4250 | } | |
74531fed | 4251 | |
6e586cc5 YQ |
4252 | /* init_wait_for_inferior should be called before get_offsets in order |
4253 | to manage `inserted' flag in bp loc in a correct state. | |
4254 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4255 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4256 | start_remote, set `inserted' flag to 1. In the initialization of | |
4257 | inferior, breakpoint_init_inferior should be called first, and then | |
4258 | breakpoint_re_set can be called. If this order is broken, state of | |
4259 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4260 | manipulation. */ | |
4261 | init_wait_for_inferior (); | |
4262 | ||
74531fed PA |
4263 | get_offsets (); /* Get text, data & bss offsets. */ |
4264 | ||
d962ef82 DJ |
4265 | /* If we could not find a description using qXfer, and we know |
4266 | how to do it some other way, try again. This is not | |
4267 | supported for non-stop; it could be, but it is tricky if | |
4268 | there are no stopped threads when we connect. */ | |
04bd08de | 4269 | if (remote_read_description_p (target) |
f5656ead | 4270 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4271 | { |
4272 | target_clear_description (); | |
4273 | target_find_description (); | |
4274 | } | |
4275 | ||
74531fed PA |
4276 | /* Use the previously fetched status. */ |
4277 | gdb_assert (wait_status != NULL); | |
4278 | strcpy (rs->buf, wait_status); | |
4279 | rs->cached_wait_status = 1; | |
4280 | ||
04bd08de | 4281 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4282 | } |
4283 | else | |
4284 | { | |
68c97600 PA |
4285 | /* Clear WFI global state. Do this before finding about new |
4286 | threads and inferiors, and setting the current inferior. | |
4287 | Otherwise we would clear the proceed status of the current | |
4288 | inferior when we want its stop_soon state to be preserved | |
4289 | (see notice_new_inferior). */ | |
4290 | init_wait_for_inferior (); | |
4291 | ||
74531fed PA |
4292 | /* In non-stop, we will either get an "OK", meaning that there |
4293 | are no stopped threads at this time; or, a regular stop | |
4294 | reply. In the latter case, there may be more than one thread | |
4295 | stopped --- we pull them all out using the vStopped | |
4296 | mechanism. */ | |
4297 | if (strcmp (rs->buf, "OK") != 0) | |
4298 | { | |
722247f1 | 4299 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4300 | |
722247f1 YQ |
4301 | /* remote_notif_get_pending_replies acks this one, and gets |
4302 | the rest out. */ | |
f48ff2a7 | 4303 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4304 | = remote_notif_parse (notif, rs->buf); |
4305 | remote_notif_get_pending_events (notif); | |
74531fed | 4306 | } |
2d717e4f | 4307 | |
74531fed PA |
4308 | if (thread_count () == 0) |
4309 | { | |
04bd08de | 4310 | if (!extended_p) |
74531fed | 4311 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4312 | |
c35b1492 PA |
4313 | /* We're connected, but not running. Drop out before we |
4314 | call start_remote. */ | |
e278ad5b | 4315 | rs->starting_up = 0; |
c35b1492 PA |
4316 | return; |
4317 | } | |
74531fed | 4318 | |
74531fed PA |
4319 | /* In non-stop mode, any cached wait status will be stored in |
4320 | the stop reply queue. */ | |
4321 | gdb_assert (wait_status == NULL); | |
f0223081 | 4322 | |
2455069d | 4323 | /* Report all signals during attach/startup. */ |
94bedb42 | 4324 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4325 | |
4326 | /* If there are already stopped threads, mark them stopped and | |
4327 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4328 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4329 | |
4330 | if (target_can_async_p ()) | |
4331 | target_async (1); | |
74531fed | 4332 | } |
c8d104ad | 4333 | |
c8d104ad PA |
4334 | /* If we connected to a live target, do some additional setup. */ |
4335 | if (target_has_execution) | |
4336 | { | |
f4ccffad | 4337 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4338 | remote_check_symbols (); |
c8d104ad | 4339 | } |
50c71eaf | 4340 | |
d5551862 SS |
4341 | /* Possibly the target has been engaged in a trace run started |
4342 | previously; find out where things are at. */ | |
8bd200f1 | 4343 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4344 | { |
00bf0b85 | 4345 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4346 | |
00bf0b85 SS |
4347 | if (current_trace_status ()->running) |
4348 | printf_filtered (_("Trace is already running on the target.\n")); | |
4349 | ||
ab6617cc | 4350 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4351 | |
4352 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4353 | } |
4354 | ||
c0272db5 TW |
4355 | /* Possibly the target has been engaged in a btrace record started |
4356 | previously; find out where things are at. */ | |
4357 | remote_btrace_maybe_reopen (); | |
4358 | ||
1e51243a PA |
4359 | /* The thread and inferior lists are now synchronized with the |
4360 | target, our symbols have been relocated, and we're merged the | |
4361 | target's tracepoints with ours. We're done with basic start | |
4362 | up. */ | |
4363 | rs->starting_up = 0; | |
4364 | ||
a25a5a45 PA |
4365 | /* Maybe breakpoints are global and need to be inserted now. */ |
4366 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4367 | insert_breakpoints (); |
c906108c SS |
4368 | } |
4369 | ||
4370 | /* Open a connection to a remote debugger. | |
4371 | NAME is the filename used for communication. */ | |
4372 | ||
4373 | static void | |
014f9477 | 4374 | remote_open (const char *name, int from_tty) |
c906108c | 4375 | { |
75c99385 | 4376 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4377 | } |
4378 | ||
c906108c SS |
4379 | /* Open a connection to a remote debugger using the extended |
4380 | remote gdb protocol. NAME is the filename used for communication. */ | |
4381 | ||
4382 | static void | |
014f9477 | 4383 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4384 | { |
75c99385 | 4385 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4386 | } |
4387 | ||
ca4f7f8b PA |
4388 | /* Reset all packets back to "unknown support". Called when opening a |
4389 | new connection to a remote target. */ | |
c906108c | 4390 | |
d471ea57 | 4391 | static void |
ca4f7f8b | 4392 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4393 | { |
4394 | int i; | |
a744cf53 | 4395 | |
444abaca | 4396 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4397 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4398 | } |
4399 | ||
ca4f7f8b PA |
4400 | /* Initialize all packet configs. */ |
4401 | ||
4402 | static void | |
4403 | init_all_packet_configs (void) | |
4404 | { | |
4405 | int i; | |
4406 | ||
4407 | for (i = 0; i < PACKET_MAX; i++) | |
4408 | { | |
4409 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4410 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4411 | } | |
4412 | } | |
4413 | ||
23860348 | 4414 | /* Symbol look-up. */ |
dc8acb97 MS |
4415 | |
4416 | static void | |
36d25514 | 4417 | remote_check_symbols (void) |
dc8acb97 | 4418 | { |
d01949b6 | 4419 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4420 | char *msg, *reply, *tmp; |
dc8acb97 | 4421 | int end; |
28170b88 | 4422 | long reply_size; |
a5c0808e | 4423 | struct cleanup *old_chain; |
dc8acb97 | 4424 | |
63154eca PA |
4425 | /* The remote side has no concept of inferiors that aren't running |
4426 | yet, it only knows about running processes. If we're connected | |
4427 | but our current inferior is not running, we should not invite the | |
4428 | remote target to request symbol lookups related to its | |
4429 | (unrelated) current process. */ | |
4430 | if (!target_has_execution) | |
4431 | return; | |
4432 | ||
4082afcc | 4433 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4434 | return; |
4435 | ||
63154eca PA |
4436 | /* Make sure the remote is pointing at the right process. Note |
4437 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4438 | set_general_process (); |
4439 | ||
6d820c5c DJ |
4440 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4441 | because we need both at the same time. */ | |
224c3ddb | 4442 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4443 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4444 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4445 | make_cleanup (free_current_contents, &reply); | |
4446 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4447 | |
23860348 | 4448 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4449 | |
4450 | putpkt ("qSymbol::"); | |
28170b88 MK |
4451 | getpkt (&reply, &reply_size, 0); |
4452 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4453 | |
61012eef | 4454 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4455 | { |
77e371c0 TT |
4456 | struct bound_minimal_symbol sym; |
4457 | ||
dc8acb97 | 4458 | tmp = &reply[8]; |
cfd77fa1 | 4459 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4460 | msg[end] = '\0'; |
4461 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4462 | if (sym.minsym == NULL) |
ea9c271d | 4463 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4464 | else |
2bbe3cc1 | 4465 | { |
f5656ead | 4466 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4467 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4468 | |
4469 | /* If this is a function address, return the start of code | |
4470 | instead of any data function descriptor. */ | |
f5656ead | 4471 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4472 | sym_addr, |
4473 | ¤t_target); | |
4474 | ||
4475 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4476 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4477 | } |
4478 | ||
dc8acb97 | 4479 | putpkt (msg); |
28170b88 | 4480 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4481 | } |
a5c0808e PA |
4482 | |
4483 | do_cleanups (old_chain); | |
dc8acb97 MS |
4484 | } |
4485 | ||
9db8d71f | 4486 | static struct serial * |
baa336ce | 4487 | remote_serial_open (const char *name) |
9db8d71f DJ |
4488 | { |
4489 | static int udp_warning = 0; | |
4490 | ||
4491 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4492 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4493 | serial connection is reliable and not the serial connection promising | |
4494 | to be. */ | |
61012eef | 4495 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4496 | { |
3e43a32a MS |
4497 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4498 | "Some events may be lost, rendering further debugging " | |
4499 | "impossible.")); | |
9db8d71f DJ |
4500 | udp_warning = 1; |
4501 | } | |
4502 | ||
4503 | return serial_open (name); | |
4504 | } | |
4505 | ||
d914c394 SS |
4506 | /* Inform the target of our permission settings. The permission flags |
4507 | work without this, but if the target knows the settings, it can do | |
4508 | a couple things. First, it can add its own check, to catch cases | |
4509 | that somehow manage to get by the permissions checks in target | |
4510 | methods. Second, if the target is wired to disallow particular | |
4511 | settings (for instance, a system in the field that is not set up to | |
4512 | be able to stop at a breakpoint), it can object to any unavailable | |
4513 | permissions. */ | |
4514 | ||
4515 | void | |
c378d69d | 4516 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4517 | { |
4518 | struct remote_state *rs = get_remote_state (); | |
4519 | ||
bba74b36 YQ |
4520 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4521 | "WriteReg:%x;WriteMem:%x;" | |
4522 | "InsertBreak:%x;InsertTrace:%x;" | |
4523 | "InsertFastTrace:%x;Stop:%x", | |
4524 | may_write_registers, may_write_memory, | |
4525 | may_insert_breakpoints, may_insert_tracepoints, | |
4526 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4527 | putpkt (rs->buf); |
4528 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4529 | ||
4530 | /* If the target didn't like the packet, warn the user. Do not try | |
4531 | to undo the user's settings, that would just be maddening. */ | |
4532 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4533 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4534 | } |
4535 | ||
be2a5f71 DJ |
4536 | /* This type describes each known response to the qSupported |
4537 | packet. */ | |
4538 | struct protocol_feature | |
4539 | { | |
4540 | /* The name of this protocol feature. */ | |
4541 | const char *name; | |
4542 | ||
4543 | /* The default for this protocol feature. */ | |
4544 | enum packet_support default_support; | |
4545 | ||
4546 | /* The function to call when this feature is reported, or after | |
4547 | qSupported processing if the feature is not supported. | |
4548 | The first argument points to this structure. The second | |
4549 | argument indicates whether the packet requested support be | |
4550 | enabled, disabled, or probed (or the default, if this function | |
4551 | is being called at the end of processing and this feature was | |
4552 | not reported). The third argument may be NULL; if not NULL, it | |
4553 | is a NUL-terminated string taken from the packet following | |
4554 | this feature's name and an equals sign. */ | |
4555 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4556 | const char *); | |
4557 | ||
4558 | /* The corresponding packet for this feature. Only used if | |
4559 | FUNC is remote_supported_packet. */ | |
4560 | int packet; | |
4561 | }; | |
4562 | ||
be2a5f71 DJ |
4563 | static void |
4564 | remote_supported_packet (const struct protocol_feature *feature, | |
4565 | enum packet_support support, | |
4566 | const char *argument) | |
4567 | { | |
4568 | if (argument) | |
4569 | { | |
4570 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4571 | " \"%s\"."), feature->name); | |
4572 | return; | |
4573 | } | |
4574 | ||
4082afcc | 4575 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4576 | } |
be2a5f71 DJ |
4577 | |
4578 | static void | |
4579 | remote_packet_size (const struct protocol_feature *feature, | |
4580 | enum packet_support support, const char *value) | |
4581 | { | |
4582 | struct remote_state *rs = get_remote_state (); | |
4583 | ||
4584 | int packet_size; | |
4585 | char *value_end; | |
4586 | ||
4587 | if (support != PACKET_ENABLE) | |
4588 | return; | |
4589 | ||
4590 | if (value == NULL || *value == '\0') | |
4591 | { | |
4592 | warning (_("Remote target reported \"%s\" without a size."), | |
4593 | feature->name); | |
4594 | return; | |
4595 | } | |
4596 | ||
4597 | errno = 0; | |
4598 | packet_size = strtol (value, &value_end, 16); | |
4599 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4600 | { | |
4601 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4602 | feature->name, value); | |
4603 | return; | |
4604 | } | |
4605 | ||
be2a5f71 DJ |
4606 | /* Record the new maximum packet size. */ |
4607 | rs->explicit_packet_size = packet_size; | |
4608 | } | |
4609 | ||
dc473cfb | 4610 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4611 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4612 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4613 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4614 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4615 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4616 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4617 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4618 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4619 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4620 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4621 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4622 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4623 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4624 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4625 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4626 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4627 | PACKET_qXfer_spu_read }, | |
4628 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4629 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4630 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4631 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4632 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4633 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4634 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4635 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4636 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4637 | PACKET_QPassSignals }, | |
82075af2 JS |
4638 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4639 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4640 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4641 | PACKET_QProgramSignals }, | |
aefd8b33 SDJ |
4642 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4643 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
4644 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
4645 | PACKET_QEnvironmentHexEncoded }, | |
4646 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
4647 | PACKET_QEnvironmentReset }, | |
4648 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
4649 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
4650 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4651 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4652 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4653 | PACKET_multiprocess_feature }, | |
4654 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4655 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4656 | PACKET_qXfer_siginfo_read }, | |
4657 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4658 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4659 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4660 | PACKET_ConditionalTracepoints }, |
4082afcc | 4661 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4662 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4663 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4664 | PACKET_BreakpointCommands }, |
4082afcc | 4665 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4666 | PACKET_FastTracepoints }, |
4082afcc | 4667 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4668 | PACKET_StaticTracepoints }, |
4082afcc | 4669 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4670 | PACKET_InstallInTrace}, |
4082afcc PA |
4671 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4672 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4673 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4674 | PACKET_bc }, | |
4675 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4676 | PACKET_bs }, | |
409873ef SS |
4677 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4678 | PACKET_TracepointSource }, | |
d914c394 SS |
4679 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4680 | PACKET_QAllow }, | |
4082afcc PA |
4681 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4682 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4683 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4684 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4685 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4686 | PACKET_qXfer_uib }, | |
03583c20 UW |
4687 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4688 | PACKET_QDisableRandomization }, | |
d1feda86 | 4689 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4690 | { "QTBuffer:size", PACKET_DISABLE, |
4691 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4692 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4693 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4694 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4695 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4696 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4697 | PACKET_qXfer_btrace }, |
4698 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4699 | PACKET_qXfer_btrace_conf }, |
4700 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4701 | PACKET_Qbtrace_conf_bts_size }, |
4702 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4703 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4704 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4705 | PACKET_fork_event_feature }, | |
4706 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4707 | PACKET_vfork_event_feature }, | |
94585166 DB |
4708 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4709 | PACKET_exec_event_feature }, | |
b20a6524 | 4710 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4711 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4712 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4713 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4714 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4715 | }; |
4716 | ||
c8d5aac9 L |
4717 | static char *remote_support_xml; |
4718 | ||
4719 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4720 | ||
4721 | void | |
6e39997a | 4722 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4723 | { |
4724 | #if defined(HAVE_LIBEXPAT) | |
4725 | if (remote_support_xml == NULL) | |
c4f7c687 | 4726 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4727 | else |
4728 | { | |
4729 | char *copy = xstrdup (remote_support_xml + 13); | |
4730 | char *p = strtok (copy, ","); | |
4731 | ||
4732 | do | |
4733 | { | |
4734 | if (strcmp (p, xml) == 0) | |
4735 | { | |
4736 | /* already there */ | |
4737 | xfree (copy); | |
4738 | return; | |
4739 | } | |
4740 | } | |
4741 | while ((p = strtok (NULL, ",")) != NULL); | |
4742 | xfree (copy); | |
4743 | ||
94b0dee1 PA |
4744 | remote_support_xml = reconcat (remote_support_xml, |
4745 | remote_support_xml, ",", xml, | |
4746 | (char *) NULL); | |
c8d5aac9 L |
4747 | } |
4748 | #endif | |
4749 | } | |
4750 | ||
4751 | static char * | |
4752 | remote_query_supported_append (char *msg, const char *append) | |
4753 | { | |
4754 | if (msg) | |
94b0dee1 | 4755 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4756 | else |
4757 | return xstrdup (append); | |
4758 | } | |
4759 | ||
be2a5f71 DJ |
4760 | static void |
4761 | remote_query_supported (void) | |
4762 | { | |
4763 | struct remote_state *rs = get_remote_state (); | |
4764 | char *next; | |
4765 | int i; | |
4766 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4767 | ||
4768 | /* The packet support flags are handled differently for this packet | |
4769 | than for most others. We treat an error, a disabled packet, and | |
4770 | an empty response identically: any features which must be reported | |
4771 | to be used will be automatically disabled. An empty buffer | |
4772 | accomplishes this, since that is also the representation for a list | |
4773 | containing no features. */ | |
4774 | ||
4775 | rs->buf[0] = 0; | |
4082afcc | 4776 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4777 | { |
c8d5aac9 | 4778 | char *q = NULL; |
94b0dee1 | 4779 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4780 | |
73b8c1fd PA |
4781 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4782 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4783 | |
f7e6eed5 PA |
4784 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4785 | q = remote_query_supported_append (q, "swbreak+"); | |
4786 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4787 | q = remote_query_supported_append (q, "hwbreak+"); | |
4788 | ||
dde08ee1 PA |
4789 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4790 | ||
8020350c DB |
4791 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4792 | != AUTO_BOOLEAN_FALSE) | |
4793 | q = remote_query_supported_append (q, "fork-events+"); | |
4794 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4795 | != AUTO_BOOLEAN_FALSE) | |
4796 | q = remote_query_supported_append (q, "vfork-events+"); | |
4797 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4798 | != AUTO_BOOLEAN_FALSE) | |
4799 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4800 | |
750ce8d1 YQ |
4801 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4802 | q = remote_query_supported_append (q, "vContSupported+"); | |
4803 | ||
65706a29 PA |
4804 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4805 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4806 | ||
f2faf941 PA |
4807 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4808 | q = remote_query_supported_append (q, "no-resumed+"); | |
4809 | ||
b35d5edb PA |
4810 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4811 | the qSupported:xmlRegisters=i386 handling. */ | |
4812 | if (remote_support_xml != NULL) | |
4813 | q = remote_query_supported_append (q, remote_support_xml); | |
4814 | ||
dde08ee1 PA |
4815 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4816 | putpkt (q); | |
82f73884 | 4817 | |
94b0dee1 PA |
4818 | do_cleanups (old_chain); |
4819 | ||
be2a5f71 DJ |
4820 | getpkt (&rs->buf, &rs->buf_size, 0); |
4821 | ||
4822 | /* If an error occured, warn, but do not return - just reset the | |
4823 | buffer to empty and go on to disable features. */ | |
4824 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4825 | == PACKET_ERROR) | |
4826 | { | |
4827 | warning (_("Remote failure reply: %s"), rs->buf); | |
4828 | rs->buf[0] = 0; | |
4829 | } | |
4830 | } | |
4831 | ||
4832 | memset (seen, 0, sizeof (seen)); | |
4833 | ||
4834 | next = rs->buf; | |
4835 | while (*next) | |
4836 | { | |
4837 | enum packet_support is_supported; | |
4838 | char *p, *end, *name_end, *value; | |
4839 | ||
4840 | /* First separate out this item from the rest of the packet. If | |
4841 | there's another item after this, we overwrite the separator | |
4842 | (terminated strings are much easier to work with). */ | |
4843 | p = next; | |
4844 | end = strchr (p, ';'); | |
4845 | if (end == NULL) | |
4846 | { | |
4847 | end = p + strlen (p); | |
4848 | next = end; | |
4849 | } | |
4850 | else | |
4851 | { | |
89be2091 DJ |
4852 | *end = '\0'; |
4853 | next = end + 1; | |
4854 | ||
be2a5f71 DJ |
4855 | if (end == p) |
4856 | { | |
4857 | warning (_("empty item in \"qSupported\" response")); | |
4858 | continue; | |
4859 | } | |
be2a5f71 DJ |
4860 | } |
4861 | ||
4862 | name_end = strchr (p, '='); | |
4863 | if (name_end) | |
4864 | { | |
4865 | /* This is a name=value entry. */ | |
4866 | is_supported = PACKET_ENABLE; | |
4867 | value = name_end + 1; | |
4868 | *name_end = '\0'; | |
4869 | } | |
4870 | else | |
4871 | { | |
4872 | value = NULL; | |
4873 | switch (end[-1]) | |
4874 | { | |
4875 | case '+': | |
4876 | is_supported = PACKET_ENABLE; | |
4877 | break; | |
4878 | ||
4879 | case '-': | |
4880 | is_supported = PACKET_DISABLE; | |
4881 | break; | |
4882 | ||
4883 | case '?': | |
4884 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4885 | break; | |
4886 | ||
4887 | default: | |
3e43a32a MS |
4888 | warning (_("unrecognized item \"%s\" " |
4889 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4890 | continue; |
4891 | } | |
4892 | end[-1] = '\0'; | |
4893 | } | |
4894 | ||
4895 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4896 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4897 | { | |
4898 | const struct protocol_feature *feature; | |
4899 | ||
4900 | seen[i] = 1; | |
4901 | feature = &remote_protocol_features[i]; | |
4902 | feature->func (feature, is_supported, value); | |
4903 | break; | |
4904 | } | |
4905 | } | |
4906 | ||
4907 | /* If we increased the packet size, make sure to increase the global | |
4908 | buffer size also. We delay this until after parsing the entire | |
4909 | qSupported packet, because this is the same buffer we were | |
4910 | parsing. */ | |
4911 | if (rs->buf_size < rs->explicit_packet_size) | |
4912 | { | |
4913 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4914 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4915 | } |
4916 | ||
4917 | /* Handle the defaults for unmentioned features. */ | |
4918 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4919 | if (!seen[i]) | |
4920 | { | |
4921 | const struct protocol_feature *feature; | |
4922 | ||
4923 | feature = &remote_protocol_features[i]; | |
4924 | feature->func (feature, feature->default_support, NULL); | |
4925 | } | |
4926 | } | |
4927 | ||
048094ac PA |
4928 | /* Serial QUIT handler for the remote serial descriptor. |
4929 | ||
4930 | Defers handling a Ctrl-C until we're done with the current | |
4931 | command/response packet sequence, unless: | |
4932 | ||
4933 | - We're setting up the connection. Don't send a remote interrupt | |
4934 | request, as we're not fully synced yet. Quit immediately | |
4935 | instead. | |
4936 | ||
4937 | - The target has been resumed in the foreground | |
4938 | (target_terminal_is_ours is false) with a synchronous resume | |
4939 | packet, and we're blocked waiting for the stop reply, thus a | |
4940 | Ctrl-C should be immediately sent to the target. | |
4941 | ||
4942 | - We get a second Ctrl-C while still within the same serial read or | |
4943 | write. In that case the serial is seemingly wedged --- offer to | |
4944 | quit/disconnect. | |
4945 | ||
4946 | - We see a second Ctrl-C without target response, after having | |
4947 | previously interrupted the target. In that case the target/stub | |
4948 | is probably wedged --- offer to quit/disconnect. | |
4949 | */ | |
4950 | ||
4951 | static void | |
4952 | remote_serial_quit_handler (void) | |
4953 | { | |
4954 | struct remote_state *rs = get_remote_state (); | |
4955 | ||
4956 | if (check_quit_flag ()) | |
4957 | { | |
4958 | /* If we're starting up, we're not fully synced yet. Quit | |
4959 | immediately. */ | |
4960 | if (rs->starting_up) | |
4961 | quit (); | |
4962 | else if (rs->got_ctrlc_during_io) | |
4963 | { | |
4964 | if (query (_("The target is not responding to GDB commands.\n" | |
4965 | "Stop debugging it? "))) | |
4966 | remote_unpush_and_throw (); | |
4967 | } | |
4968 | /* If ^C has already been sent once, offer to disconnect. */ | |
4969 | else if (!target_terminal_is_ours () && rs->ctrlc_pending_p) | |
4970 | interrupt_query (); | |
4971 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
4972 | an interrupt request. */ | |
4973 | else if (!target_terminal_is_ours () && rs->waiting_for_stop_reply) | |
4974 | target_interrupt (inferior_ptid); | |
4975 | else | |
4976 | rs->got_ctrlc_during_io = 1; | |
4977 | } | |
4978 | } | |
4979 | ||
78a095c3 JK |
4980 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4981 | on it so remove them first. */ | |
4982 | ||
4983 | static void | |
4984 | remote_unpush_target (void) | |
4985 | { | |
915ef8b1 | 4986 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 4987 | } |
be2a5f71 | 4988 | |
048094ac PA |
4989 | static void |
4990 | remote_unpush_and_throw (void) | |
4991 | { | |
4992 | remote_unpush_target (); | |
4993 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
4994 | } | |
4995 | ||
c906108c | 4996 | static void |
014f9477 | 4997 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4998 | struct target_ops *target, int extended_p) |
c906108c | 4999 | { |
d01949b6 | 5000 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 5001 | |
c906108c | 5002 | if (name == 0) |
8a3fe4f8 | 5003 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5004 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5005 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5006 | |
23860348 | 5007 | /* See FIXME above. */ |
c6ebd6cf | 5008 | if (!target_async_permitted) |
92d1e331 | 5009 | wait_forever_enabled_p = 1; |
6426a772 | 5010 | |
2d717e4f | 5011 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5012 | Ask this question first, before target_preopen has a chance to kill |
5013 | anything. */ | |
5d93a237 | 5014 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 5015 | { |
78a095c3 JK |
5016 | if (from_tty |
5017 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5018 | error (_("Still connected.")); |
5019 | } | |
5020 | ||
78a095c3 | 5021 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5022 | target_preopen (from_tty); |
5023 | ||
89be2091 | 5024 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
5025 | xfree (rs->last_pass_packet); |
5026 | rs->last_pass_packet = NULL; | |
89be2091 | 5027 | |
9b224c5e PA |
5028 | /* Make sure we send the program signals list the next time we |
5029 | resume. */ | |
5e4a05c4 TT |
5030 | xfree (rs->last_program_signals_packet); |
5031 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 5032 | |
ad9a8f3f | 5033 | remote_fileio_reset (); |
1dd41f16 NS |
5034 | reopen_exec_file (); |
5035 | reread_symbols (); | |
5036 | ||
5d93a237 TT |
5037 | rs->remote_desc = remote_serial_open (name); |
5038 | if (!rs->remote_desc) | |
c906108c SS |
5039 | perror_with_name (name); |
5040 | ||
5041 | if (baud_rate != -1) | |
5042 | { | |
5d93a237 | 5043 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5044 | { |
9b74d5d3 KB |
5045 | /* The requested speed could not be set. Error out to |
5046 | top level after closing remote_desc. Take care to | |
5047 | set remote_desc to NULL to avoid closing remote_desc | |
5048 | more than once. */ | |
5d93a237 TT |
5049 | serial_close (rs->remote_desc); |
5050 | rs->remote_desc = NULL; | |
c906108c SS |
5051 | perror_with_name (name); |
5052 | } | |
5053 | } | |
5054 | ||
236af5e3 | 5055 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5056 | serial_raw (rs->remote_desc); |
c906108c SS |
5057 | |
5058 | /* If there is something sitting in the buffer we might take it as a | |
5059 | response to a command, which would be bad. */ | |
5d93a237 | 5060 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5061 | |
5062 | if (from_tty) | |
5063 | { | |
5064 | puts_filtered ("Remote debugging using "); | |
5065 | puts_filtered (name); | |
5066 | puts_filtered ("\n"); | |
5067 | } | |
23860348 | 5068 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 5069 | |
74531fed PA |
5070 | /* Register extra event sources in the event loop. */ |
5071 | remote_async_inferior_event_token | |
5072 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5073 | NULL); | |
5965e028 | 5074 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5075 | |
be2a5f71 DJ |
5076 | /* Reset the target state; these things will be queried either by |
5077 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5078 | reset_all_packet_configs_support (); |
74531fed | 5079 | rs->cached_wait_status = 0; |
be2a5f71 | 5080 | rs->explicit_packet_size = 0; |
a6f3e723 | 5081 | rs->noack_mode = 0; |
82f73884 | 5082 | rs->extended = extended_p; |
e24a49d8 | 5083 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5084 | rs->ctrlc_pending_p = 0; |
048094ac | 5085 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5086 | |
47f8a51d TT |
5087 | rs->general_thread = not_sent_ptid; |
5088 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5089 | rs->remote_traceframe_number = -1; |
c906108c | 5090 | |
3a00c802 PA |
5091 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5092 | ||
9d1f7ab2 | 5093 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5094 | rs->use_threadinfo_query = 1; |
5095 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5096 | |
80152258 PA |
5097 | readahead_cache_invalidate (); |
5098 | ||
048094ac PA |
5099 | /* Start out by owning the terminal. */ |
5100 | remote_async_terminal_ours_p = 1; | |
5101 | ||
c6ebd6cf | 5102 | if (target_async_permitted) |
92d1e331 | 5103 | { |
92d1e331 DJ |
5104 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5105 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5106 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5107 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5108 | around this. Eventually a mechanism that allows |
92d1e331 | 5109 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5110 | implemented. */ |
92d1e331 DJ |
5111 | wait_forever_enabled_p = 0; |
5112 | } | |
5113 | ||
23860348 | 5114 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5115 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5116 | |
74531fed PA |
5117 | /* Start afresh. */ |
5118 | init_thread_list (); | |
5119 | ||
36918e70 | 5120 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5121 | target (we'd otherwise be in an inconsistent state) and then |
5122 | propogate the error on up the exception chain. This ensures that | |
5123 | the caller doesn't stumble along blindly assuming that the | |
5124 | function succeeded. The CLI doesn't have this problem but other | |
5125 | UI's, such as MI do. | |
36918e70 AC |
5126 | |
5127 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5128 | this function should return an error indication letting the | |
ce2826aa | 5129 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5130 | ``target remote'' is directly wired to this function making that |
5131 | impossible. On a positive note, the CLI side of this problem has | |
5132 | been fixed - the function set_cmd_context() makes it possible for | |
5133 | all the ``target ....'' commands to share a common callback | |
5134 | function. See cli-dump.c. */ | |
109c3e39 | 5135 | { |
2d717e4f | 5136 | |
492d29ea | 5137 | TRY |
04bd08de TT |
5138 | { |
5139 | remote_start_remote (from_tty, target, extended_p); | |
5140 | } | |
492d29ea | 5141 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5142 | { |
c8d104ad PA |
5143 | /* Pop the partially set up target - unless something else did |
5144 | already before throwing the exception. */ | |
5d93a237 | 5145 | if (rs->remote_desc != NULL) |
78a095c3 | 5146 | remote_unpush_target (); |
c6ebd6cf | 5147 | if (target_async_permitted) |
109c3e39 AC |
5148 | wait_forever_enabled_p = 1; |
5149 | throw_exception (ex); | |
5150 | } | |
492d29ea | 5151 | END_CATCH |
109c3e39 | 5152 | } |
c906108c | 5153 | |
f4abbc16 MM |
5154 | remote_btrace_reset (); |
5155 | ||
c6ebd6cf | 5156 | if (target_async_permitted) |
92d1e331 | 5157 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5158 | } |
5159 | ||
de0d863e DB |
5160 | /* Detach the specified process. */ |
5161 | ||
5162 | static void | |
5163 | remote_detach_pid (int pid) | |
5164 | { | |
5165 | struct remote_state *rs = get_remote_state (); | |
5166 | ||
5167 | if (remote_multi_process_p (rs)) | |
5168 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5169 | else | |
5170 | strcpy (rs->buf, "D"); | |
5171 | ||
5172 | putpkt (rs->buf); | |
5173 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5174 | ||
5175 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5176 | ; | |
5177 | else if (rs->buf[0] == '\0') | |
5178 | error (_("Remote doesn't know how to detach")); | |
5179 | else | |
5180 | error (_("Can't detach process.")); | |
5181 | } | |
5182 | ||
5183 | /* This detaches a program to which we previously attached, using | |
5184 | inferior_ptid to identify the process. After this is done, GDB | |
5185 | can be used to debug some other program. We better not have left | |
5186 | any breakpoints in the target program or it'll die when it hits | |
5187 | one. */ | |
c906108c SS |
5188 | |
5189 | static void | |
de0d863e | 5190 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 5191 | { |
82f73884 | 5192 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5193 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5194 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5195 | int is_fork_parent; | |
c906108c SS |
5196 | |
5197 | if (args) | |
8a3fe4f8 | 5198 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 5199 | |
2d717e4f DJ |
5200 | if (!target_has_execution) |
5201 | error (_("No process to detach from.")); | |
5202 | ||
0f48b757 | 5203 | target_announce_detach (from_tty); |
7cee1e54 | 5204 | |
c906108c | 5205 | /* Tell the remote target to detach. */ |
de0d863e | 5206 | remote_detach_pid (pid); |
82f73884 | 5207 | |
8020350c DB |
5208 | /* Exit only if this is the only active inferior. */ |
5209 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5210 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5211 | |
de0d863e DB |
5212 | /* Check to see if we are detaching a fork parent. Note that if we |
5213 | are detaching a fork child, tp == NULL. */ | |
5214 | is_fork_parent = (tp != NULL | |
5215 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5216 | ||
5217 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5218 | breakpoints that should be available for the followed inferior. */ | |
5219 | if (!is_fork_parent) | |
bc1e6c81 | 5220 | target_mourn_inferior (inferior_ptid); |
de0d863e DB |
5221 | else |
5222 | { | |
5223 | inferior_ptid = null_ptid; | |
5224 | detach_inferior (pid); | |
5225 | } | |
2d717e4f DJ |
5226 | } |
5227 | ||
5228 | static void | |
52554a0e | 5229 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5230 | { |
de0d863e | 5231 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
5232 | } |
5233 | ||
5234 | static void | |
52554a0e | 5235 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5236 | { |
de0d863e DB |
5237 | remote_detach_1 (args, from_tty); |
5238 | } | |
5239 | ||
5240 | /* Target follow-fork function for remote targets. On entry, and | |
5241 | at return, the current inferior is the fork parent. | |
5242 | ||
5243 | Note that although this is currently only used for extended-remote, | |
5244 | it is named remote_follow_fork in anticipation of using it for the | |
5245 | remote target as well. */ | |
5246 | ||
5247 | static int | |
5248 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5249 | int detach_fork) | |
5250 | { | |
5251 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5252 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5253 | |
c269dbdb DB |
5254 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5255 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5256 | { |
5257 | /* When following the parent and detaching the child, we detach | |
5258 | the child here. For the case of following the child and | |
5259 | detaching the parent, the detach is done in the target- | |
5260 | independent follow fork code in infrun.c. We can't use | |
5261 | target_detach when detaching an unfollowed child because | |
5262 | the client side doesn't know anything about the child. */ | |
5263 | if (detach_fork && !follow_child) | |
5264 | { | |
5265 | /* Detach the fork child. */ | |
5266 | ptid_t child_ptid; | |
5267 | pid_t child_pid; | |
5268 | ||
5269 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5270 | child_pid = ptid_get_pid (child_ptid); | |
5271 | ||
5272 | remote_detach_pid (child_pid); | |
5273 | detach_inferior (child_pid); | |
5274 | } | |
5275 | } | |
5276 | return 0; | |
c906108c SS |
5277 | } |
5278 | ||
94585166 DB |
5279 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5280 | in the program space of the new inferior. On entry and at return the | |
5281 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5282 | inferior, which may be the same as the exec'ing inferior unless | |
5283 | follow-exec-mode is "new". */ | |
5284 | ||
5285 | static void | |
5286 | remote_follow_exec (struct target_ops *ops, | |
5287 | struct inferior *inf, char *execd_pathname) | |
5288 | { | |
5289 | /* We know that this is a target file name, so if it has the "target:" | |
5290 | prefix we strip it off before saving it in the program space. */ | |
5291 | if (is_target_filename (execd_pathname)) | |
5292 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5293 | ||
5294 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5295 | } | |
5296 | ||
6ad8ae5c DJ |
5297 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5298 | ||
43ff13b4 | 5299 | static void |
fee354ee | 5300 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5301 | { |
43ff13b4 | 5302 | if (args) |
2d717e4f | 5303 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5304 | |
8020350c DB |
5305 | /* Make sure we unpush even the extended remote targets. Calling |
5306 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5307 | unpush if there is more than one inferior left. */ | |
5308 | unpush_target (target); | |
5309 | generic_mourn_inferior (); | |
2d717e4f | 5310 | |
43ff13b4 JM |
5311 | if (from_tty) |
5312 | puts_filtered ("Ending remote debugging.\n"); | |
5313 | } | |
5314 | ||
2d717e4f DJ |
5315 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5316 | be chatty about it. */ | |
5317 | ||
5318 | static void | |
20f796c9 GB |
5319 | extended_remote_attach (struct target_ops *target, const char *args, |
5320 | int from_tty) | |
2d717e4f DJ |
5321 | { |
5322 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5323 | int pid; |
96ef3384 | 5324 | char *wait_status = NULL; |
2d717e4f | 5325 | |
74164c56 | 5326 | pid = parse_pid_to_attach (args); |
2d717e4f | 5327 | |
74164c56 JK |
5328 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5329 | way as in other targets. */ | |
2d717e4f | 5330 | |
4082afcc | 5331 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5332 | error (_("This target does not support attaching to a process")); |
5333 | ||
7cee1e54 PA |
5334 | if (from_tty) |
5335 | { | |
5336 | char *exec_file = get_exec_file (0); | |
5337 | ||
5338 | if (exec_file) | |
5339 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5340 | target_pid_to_str (pid_to_ptid (pid))); | |
5341 | else | |
5342 | printf_unfiltered (_("Attaching to %s\n"), | |
5343 | target_pid_to_str (pid_to_ptid (pid))); | |
5344 | ||
5345 | gdb_flush (gdb_stdout); | |
5346 | } | |
5347 | ||
bba74b36 | 5348 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5349 | putpkt (rs->buf); |
5350 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5351 | ||
4082afcc PA |
5352 | switch (packet_ok (rs->buf, |
5353 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5354 | { |
4082afcc | 5355 | case PACKET_OK: |
6efcd9a8 | 5356 | if (!target_is_non_stop_p ()) |
74531fed PA |
5357 | { |
5358 | /* Save the reply for later. */ | |
224c3ddb | 5359 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5360 | strcpy (wait_status, rs->buf); |
5361 | } | |
5362 | else if (strcmp (rs->buf, "OK") != 0) | |
5363 | error (_("Attaching to %s failed with: %s"), | |
5364 | target_pid_to_str (pid_to_ptid (pid)), | |
5365 | rs->buf); | |
4082afcc PA |
5366 | break; |
5367 | case PACKET_UNKNOWN: | |
5368 | error (_("This target does not support attaching to a process")); | |
5369 | default: | |
5370 | error (_("Attaching to %s failed"), | |
5371 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5372 | } |
2d717e4f | 5373 | |
1b6e6f5c | 5374 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5375 | |
2d717e4f | 5376 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5377 | |
6efcd9a8 | 5378 | if (target_is_non_stop_p ()) |
bad34192 PA |
5379 | { |
5380 | struct thread_info *thread; | |
79d7f229 | 5381 | |
bad34192 | 5382 | /* Get list of threads. */ |
e8032dde | 5383 | remote_update_thread_list (target); |
82f73884 | 5384 | |
bad34192 PA |
5385 | thread = first_thread_of_process (pid); |
5386 | if (thread) | |
5387 | inferior_ptid = thread->ptid; | |
5388 | else | |
5389 | inferior_ptid = pid_to_ptid (pid); | |
5390 | ||
5391 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5392 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5393 | } |
74531fed | 5394 | else |
bad34192 PA |
5395 | { |
5396 | /* Now, if we have thread information, update inferior_ptid. */ | |
5397 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5398 | ||
5399 | /* Add the main thread to the thread list. */ | |
5400 | add_thread_silent (inferior_ptid); | |
5401 | } | |
c0a2216e | 5402 | |
96ef3384 UW |
5403 | /* Next, if the target can specify a description, read it. We do |
5404 | this before anything involving memory or registers. */ | |
5405 | target_find_description (); | |
5406 | ||
6efcd9a8 | 5407 | if (!target_is_non_stop_p ()) |
74531fed PA |
5408 | { |
5409 | /* Use the previously fetched status. */ | |
5410 | gdb_assert (wait_status != NULL); | |
5411 | ||
5412 | if (target_can_async_p ()) | |
5413 | { | |
722247f1 YQ |
5414 | struct notif_event *reply |
5415 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5416 | |
722247f1 | 5417 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5418 | |
6a3753b3 | 5419 | target_async (1); |
74531fed PA |
5420 | } |
5421 | else | |
5422 | { | |
5423 | gdb_assert (wait_status != NULL); | |
5424 | strcpy (rs->buf, wait_status); | |
5425 | rs->cached_wait_status = 1; | |
5426 | } | |
5427 | } | |
5428 | else | |
5429 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5430 | } |
5431 | ||
b9c1d481 AS |
5432 | /* Implementation of the to_post_attach method. */ |
5433 | ||
5434 | static void | |
5435 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5436 | { | |
6efcd9a8 PA |
5437 | /* Get text, data & bss offsets. */ |
5438 | get_offsets (); | |
5439 | ||
b9c1d481 AS |
5440 | /* In certain cases GDB might not have had the chance to start |
5441 | symbol lookup up until now. This could happen if the debugged | |
5442 | binary is not using shared libraries, the vsyscall page is not | |
5443 | present (on Linux) and the binary itself hadn't changed since the | |
5444 | debugging process was started. */ | |
5445 | if (symfile_objfile != NULL) | |
5446 | remote_check_symbols(); | |
5447 | } | |
5448 | ||
c906108c | 5449 | \f |
506fb367 DJ |
5450 | /* Check for the availability of vCont. This function should also check |
5451 | the response. */ | |
c906108c SS |
5452 | |
5453 | static void | |
6d820c5c | 5454 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5455 | { |
2e9f7625 | 5456 | char *buf; |
6d820c5c | 5457 | |
2e9f7625 DJ |
5458 | strcpy (rs->buf, "vCont?"); |
5459 | putpkt (rs->buf); | |
6d820c5c | 5460 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5461 | buf = rs->buf; |
c906108c | 5462 | |
506fb367 | 5463 | /* Make sure that the features we assume are supported. */ |
61012eef | 5464 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5465 | { |
5466 | char *p = &buf[5]; | |
750ce8d1 | 5467 | int support_c, support_C; |
506fb367 | 5468 | |
750ce8d1 YQ |
5469 | rs->supports_vCont.s = 0; |
5470 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5471 | support_c = 0; |
5472 | support_C = 0; | |
d458bd84 | 5473 | rs->supports_vCont.t = 0; |
c1e36e3e | 5474 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5475 | while (p && *p == ';') |
5476 | { | |
5477 | p++; | |
5478 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5479 | rs->supports_vCont.s = 1; |
506fb367 | 5480 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5481 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5482 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5483 | support_c = 1; | |
5484 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5485 | support_C = 1; | |
74531fed | 5486 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5487 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5488 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5489 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5490 | |
5491 | p = strchr (p, ';'); | |
5492 | } | |
c906108c | 5493 | |
750ce8d1 YQ |
5494 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5495 | BUF will make packet_ok disable the packet. */ | |
5496 | if (!support_c || !support_C) | |
506fb367 DJ |
5497 | buf[0] = 0; |
5498 | } | |
c906108c | 5499 | |
444abaca | 5500 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5501 | } |
c906108c | 5502 | |
0d8f58ca PA |
5503 | /* Helper function for building "vCont" resumptions. Write a |
5504 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5505 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5506 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5507 | resumed thread should be single-stepped and/or signalled. If PTID | |
5508 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5509 | represents a process, then all threads of the process are resumed; | |
5510 | the thread to be stepped and/or signalled is given in the global | |
5511 | INFERIOR_PTID. */ | |
5512 | ||
5513 | static char * | |
5514 | append_resumption (char *p, char *endp, | |
2ea28649 | 5515 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5516 | { |
5517 | struct remote_state *rs = get_remote_state (); | |
5518 | ||
a493e3e2 | 5519 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5520 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5521 | else if (step |
5522 | /* GDB is willing to range step. */ | |
5523 | && use_range_stepping | |
5524 | /* Target supports range stepping. */ | |
5525 | && rs->supports_vCont.r | |
5526 | /* We don't currently support range stepping multiple | |
5527 | threads with a wildcard (though the protocol allows it, | |
5528 | so stubs shouldn't make an active effort to forbid | |
5529 | it). */ | |
5530 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5531 | { | |
5532 | struct thread_info *tp; | |
5533 | ||
5534 | if (ptid_equal (ptid, minus_one_ptid)) | |
5535 | { | |
5536 | /* If we don't know about the target thread's tid, then | |
5537 | we're resuming magic_null_ptid (see caller). */ | |
5538 | tp = find_thread_ptid (magic_null_ptid); | |
5539 | } | |
5540 | else | |
5541 | tp = find_thread_ptid (ptid); | |
5542 | gdb_assert (tp != NULL); | |
5543 | ||
5544 | if (tp->control.may_range_step) | |
5545 | { | |
5546 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5547 | ||
5548 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5549 | phex_nz (tp->control.step_range_start, | |
5550 | addr_size), | |
5551 | phex_nz (tp->control.step_range_end, | |
5552 | addr_size)); | |
5553 | } | |
5554 | else | |
5555 | p += xsnprintf (p, endp - p, ";s"); | |
5556 | } | |
0d8f58ca PA |
5557 | else if (step) |
5558 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5559 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5560 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5561 | else | |
5562 | p += xsnprintf (p, endp - p, ";c"); | |
5563 | ||
5564 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5565 | { | |
5566 | ptid_t nptid; | |
5567 | ||
5568 | /* All (-1) threads of process. */ | |
ba348170 | 5569 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5570 | |
5571 | p += xsnprintf (p, endp - p, ":"); | |
5572 | p = write_ptid (p, endp, nptid); | |
5573 | } | |
5574 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5575 | { | |
5576 | p += xsnprintf (p, endp - p, ":"); | |
5577 | p = write_ptid (p, endp, ptid); | |
5578 | } | |
5579 | ||
5580 | return p; | |
5581 | } | |
5582 | ||
799a2abe PA |
5583 | /* Clear the thread's private info on resume. */ |
5584 | ||
5585 | static void | |
5586 | resume_clear_thread_private_info (struct thread_info *thread) | |
5587 | { | |
5588 | if (thread->priv != NULL) | |
5589 | { | |
5590 | thread->priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5591 | thread->priv->watch_data_address = 0; | |
5592 | } | |
5593 | } | |
5594 | ||
e5ef252a PA |
5595 | /* Append a vCont continue-with-signal action for threads that have a |
5596 | non-zero stop signal. */ | |
5597 | ||
5598 | static char * | |
5599 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5600 | { | |
5601 | struct thread_info *thread; | |
5602 | ||
034f788c | 5603 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5604 | if (ptid_match (thread->ptid, ptid) |
5605 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5606 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5607 | { |
5608 | p = append_resumption (p, endp, thread->ptid, | |
5609 | 0, thread->suspend.stop_signal); | |
5610 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5611 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5612 | } |
5613 | ||
5614 | return p; | |
5615 | } | |
5616 | ||
7b68ffbb PA |
5617 | /* Set the target running, using the packets that use Hc |
5618 | (c/s/C/S). */ | |
5619 | ||
5620 | static void | |
5621 | remote_resume_with_hc (struct target_ops *ops, | |
5622 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5623 | { | |
5624 | struct remote_state *rs = get_remote_state (); | |
5625 | struct thread_info *thread; | |
5626 | char *buf; | |
5627 | ||
5628 | rs->last_sent_signal = siggnal; | |
5629 | rs->last_sent_step = step; | |
5630 | ||
5631 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5632 | thread. */ | |
5633 | if (ptid_equal (ptid, minus_one_ptid)) | |
5634 | set_continue_thread (any_thread_ptid); | |
5635 | else | |
5636 | set_continue_thread (ptid); | |
5637 | ||
5638 | ALL_NON_EXITED_THREADS (thread) | |
5639 | resume_clear_thread_private_info (thread); | |
5640 | ||
5641 | buf = rs->buf; | |
5642 | if (execution_direction == EXEC_REVERSE) | |
5643 | { | |
5644 | /* We don't pass signals to the target in reverse exec mode. */ | |
5645 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5646 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5647 | siggnal); | |
5648 | ||
5649 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5650 | error (_("Remote reverse-step not supported.")); | |
5651 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5652 | error (_("Remote reverse-continue not supported.")); | |
5653 | ||
5654 | strcpy (buf, step ? "bs" : "bc"); | |
5655 | } | |
5656 | else if (siggnal != GDB_SIGNAL_0) | |
5657 | { | |
5658 | buf[0] = step ? 'S' : 'C'; | |
5659 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5660 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5661 | buf[3] = '\0'; | |
5662 | } | |
5663 | else | |
5664 | strcpy (buf, step ? "s" : "c"); | |
5665 | ||
5666 | putpkt (buf); | |
5667 | } | |
5668 | ||
506fb367 DJ |
5669 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5670 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5671 | resumed thread should be single-stepped and/or signalled. If PTID |
5672 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5673 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5674 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5675 | |
7b68ffbb PA |
5676 | This function issues a strict subset of all possible vCont commands |
5677 | at the moment. */ | |
44eaed12 | 5678 | |
506fb367 | 5679 | static int |
7b68ffbb | 5680 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5681 | { |
5682 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5683 | char *p; |
5684 | char *endp; | |
44eaed12 | 5685 | |
7b68ffbb PA |
5686 | /* No reverse execution actions defined for vCont. */ |
5687 | if (execution_direction == EXEC_REVERSE) | |
5688 | return 0; | |
5689 | ||
4082afcc | 5690 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5691 | remote_vcont_probe (rs); |
44eaed12 | 5692 | |
4082afcc | 5693 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5694 | return 0; |
44eaed12 | 5695 | |
82f73884 PA |
5696 | p = rs->buf; |
5697 | endp = rs->buf + get_remote_packet_size (); | |
5698 | ||
506fb367 DJ |
5699 | /* If we could generate a wider range of packets, we'd have to worry |
5700 | about overflowing BUF. Should there be a generic | |
5701 | "multi-part-packet" packet? */ | |
5702 | ||
0d8f58ca PA |
5703 | p += xsnprintf (p, endp - p, "vCont"); |
5704 | ||
79d7f229 | 5705 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5706 | { |
79d7f229 PA |
5707 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5708 | so we don't have any TID numbers the inferior will | |
5709 | understand. Make sure to only send forms that do not specify | |
5710 | a TID. */ | |
a9cbf802 | 5711 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5712 | } |
0d8f58ca | 5713 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5714 | { |
0d8f58ca PA |
5715 | /* Resume all threads (of all processes, or of a single |
5716 | process), with preference for INFERIOR_PTID. This assumes | |
5717 | inferior_ptid belongs to the set of all threads we are about | |
5718 | to resume. */ | |
a493e3e2 | 5719 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5720 | { |
0d8f58ca PA |
5721 | /* Step inferior_ptid, with or without signal. */ |
5722 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5723 | } |
0d8f58ca | 5724 | |
e5ef252a PA |
5725 | /* Also pass down any pending signaled resumption for other |
5726 | threads not the current. */ | |
5727 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5728 | ||
0d8f58ca | 5729 | /* And continue others without a signal. */ |
a493e3e2 | 5730 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5731 | } |
5732 | else | |
506fb367 DJ |
5733 | { |
5734 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5735 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5736 | } |
c906108c | 5737 | |
82f73884 PA |
5738 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5739 | putpkt (rs->buf); | |
506fb367 | 5740 | |
6efcd9a8 | 5741 | if (target_is_non_stop_p ()) |
74531fed PA |
5742 | { |
5743 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5744 | reply will be reported asynchronously by means of a `%Stop' | |
5745 | notification. */ | |
5746 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5747 | if (strcmp (rs->buf, "OK") != 0) | |
5748 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5749 | } | |
5750 | ||
506fb367 | 5751 | return 1; |
c906108c | 5752 | } |
43ff13b4 | 5753 | |
506fb367 DJ |
5754 | /* Tell the remote machine to resume. */ |
5755 | ||
43ff13b4 | 5756 | static void |
28439f5e | 5757 | remote_resume (struct target_ops *ops, |
2ea28649 | 5758 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5759 | { |
d01949b6 | 5760 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 5761 | |
85ad3aaf PA |
5762 | /* When connected in non-stop mode, the core resumes threads |
5763 | individually. Resuming remote threads directly in target_resume | |
5764 | would thus result in sending one packet per thread. Instead, to | |
5765 | minimize roundtrip latency, here we just store the resume | |
5766 | request; the actual remote resumption will be done in | |
5767 | target_commit_resume / remote_commit_resume, where we'll be able | |
5768 | to do vCont action coalescing. */ | |
5769 | if (target_is_non_stop_p () && execution_direction != EXEC_REVERSE) | |
5770 | { | |
5771 | struct private_thread_info *remote_thr; | |
5772 | ||
5773 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
5774 | remote_thr = get_private_info_ptid (inferior_ptid); | |
5775 | else | |
5776 | remote_thr = get_private_info_ptid (ptid); | |
5777 | remote_thr->last_resume_step = step; | |
5778 | remote_thr->last_resume_sig = siggnal; | |
5779 | return; | |
5780 | } | |
5781 | ||
722247f1 YQ |
5782 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5783 | (explained in remote-notif.c:handle_notification) so | |
5784 | remote_notif_process is not called. We need find a place where | |
5785 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5786 | before resuming inferior, because inferior was stopped and no RSP | |
5787 | traffic at that moment. */ | |
6efcd9a8 | 5788 | if (!target_is_non_stop_p ()) |
5965e028 | 5789 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5790 | |
3a00c802 PA |
5791 | rs->last_resume_exec_dir = execution_direction; |
5792 | ||
7b68ffbb PA |
5793 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
5794 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
5795 | remote_resume_with_hc (ops, ptid, step, siggnal); | |
43ff13b4 | 5796 | |
2acceee2 | 5797 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5798 | with the event loop. NOTE: this is the one place where all the |
5799 | execution commands end up. We could alternatively do this in each | |
23860348 | 5800 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5801 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5802 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5803 | NOT asynchronously. */ |
362646f5 | 5804 | if (target_can_async_p ()) |
6a3753b3 | 5805 | target_async (1); |
e24a49d8 PA |
5806 | |
5807 | /* We've just told the target to resume. The remote server will | |
5808 | wait for the inferior to stop, and then send a stop reply. In | |
5809 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5810 | because the stub wouldn't be ready to process it. This applies |
5811 | only to the base all-stop protocol, however. In non-stop (which | |
5812 | only supports vCont), the stub replies with an "OK", and is | |
5813 | immediate able to process further serial input. */ | |
6efcd9a8 | 5814 | if (!target_is_non_stop_p ()) |
74531fed | 5815 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5816 | } |
85ad3aaf PA |
5817 | |
5818 | static void check_pending_events_prevent_wildcard_vcont | |
5819 | (int *may_global_wildcard_vcont); | |
5820 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
5821 | ||
5822 | /* Private per-inferior info for target remote processes. */ | |
5823 | ||
5824 | struct private_inferior | |
5825 | { | |
5826 | /* Whether we can send a wildcard vCont for this process. */ | |
5827 | int may_wildcard_vcont; | |
5828 | }; | |
5829 | ||
5830 | /* Structure used to track the construction of a vCont packet in the | |
5831 | outgoing packet buffer. This is used to send multiple vCont | |
5832 | packets if we have more actions than would fit a single packet. */ | |
5833 | ||
5834 | struct vcont_builder | |
5835 | { | |
5836 | /* Pointer to the first action. P points here if no action has been | |
5837 | appended yet. */ | |
5838 | char *first_action; | |
5839 | ||
5840 | /* Where the next action will be appended. */ | |
5841 | char *p; | |
5842 | ||
5843 | /* The end of the buffer. Must never write past this. */ | |
5844 | char *endp; | |
5845 | }; | |
5846 | ||
5847 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
5848 | ||
5849 | static void | |
5850 | vcont_builder_restart (struct vcont_builder *builder) | |
5851 | { | |
5852 | struct remote_state *rs = get_remote_state (); | |
5853 | ||
5854 | builder->p = rs->buf; | |
5855 | builder->endp = rs->buf + get_remote_packet_size (); | |
5856 | builder->p += xsnprintf (builder->p, builder->endp - builder->p, "vCont"); | |
5857 | builder->first_action = builder->p; | |
5858 | } | |
5859 | ||
5860 | /* If the vCont packet being built has any action, send it to the | |
5861 | remote end. */ | |
5862 | ||
5863 | static void | |
5864 | vcont_builder_flush (struct vcont_builder *builder) | |
5865 | { | |
5866 | struct remote_state *rs; | |
5867 | ||
5868 | if (builder->p == builder->first_action) | |
5869 | return; | |
5870 | ||
5871 | rs = get_remote_state (); | |
5872 | putpkt (rs->buf); | |
5873 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5874 | if (strcmp (rs->buf, "OK") != 0) | |
5875 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5876 | } | |
5877 | ||
5878 | /* The largest action is range-stepping, with its two addresses. This | |
5879 | is more than sufficient. If a new, bigger action is created, it'll | |
5880 | quickly trigger a failed assertion in append_resumption (and we'll | |
5881 | just bump this). */ | |
5882 | #define MAX_ACTION_SIZE 200 | |
5883 | ||
5884 | /* Append a new vCont action in the outgoing packet being built. If | |
5885 | the action doesn't fit the packet along with previous actions, push | |
5886 | what we've got so far to the remote end and start over a new vCont | |
5887 | packet (with the new action). */ | |
5888 | ||
5889 | static void | |
5890 | vcont_builder_push_action (struct vcont_builder *builder, | |
5891 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5892 | { | |
5893 | char buf[MAX_ACTION_SIZE + 1]; | |
5894 | char *endp; | |
5895 | size_t rsize; | |
5896 | ||
5897 | endp = append_resumption (buf, buf + sizeof (buf), | |
5898 | ptid, step, siggnal); | |
5899 | ||
5900 | /* Check whether this new action would fit in the vCont packet along | |
5901 | with previous actions. If not, send what we've got so far and | |
5902 | start a new vCont packet. */ | |
5903 | rsize = endp - buf; | |
5904 | if (rsize > builder->endp - builder->p) | |
5905 | { | |
5906 | vcont_builder_flush (builder); | |
5907 | vcont_builder_restart (builder); | |
5908 | ||
5909 | /* Should now fit. */ | |
5910 | gdb_assert (rsize <= builder->endp - builder->p); | |
5911 | } | |
5912 | ||
5913 | memcpy (builder->p, buf, rsize); | |
5914 | builder->p += rsize; | |
5915 | *builder->p = '\0'; | |
5916 | } | |
5917 | ||
5918 | /* to_commit_resume implementation. */ | |
5919 | ||
5920 | static void | |
5921 | remote_commit_resume (struct target_ops *ops) | |
5922 | { | |
5923 | struct remote_state *rs = get_remote_state (); | |
5924 | struct inferior *inf; | |
5925 | struct thread_info *tp; | |
5926 | int any_process_wildcard; | |
5927 | int may_global_wildcard_vcont; | |
5928 | struct vcont_builder vcont_builder; | |
5929 | ||
5930 | /* If connected in all-stop mode, we'd send the remote resume | |
5931 | request directly from remote_resume. Likewise if | |
5932 | reverse-debugging, as there are no defined vCont actions for | |
5933 | reverse execution. */ | |
5934 | if (!target_is_non_stop_p () || execution_direction == EXEC_REVERSE) | |
5935 | return; | |
5936 | ||
5937 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
5938 | instead of resuming all threads of each process individually. | |
5939 | However, if any thread of a process must remain halted, we can't | |
5940 | send wildcard resumes and must send one action per thread. | |
5941 | ||
5942 | Care must be taken to not resume threads/processes the server | |
5943 | side already told us are stopped, but the core doesn't know about | |
5944 | yet, because the events are still in the vStopped notification | |
5945 | queue. For example: | |
5946 | ||
5947 | #1 => vCont s:p1.1;c | |
5948 | #2 <= OK | |
5949 | #3 <= %Stopped T05 p1.1 | |
5950 | #4 => vStopped | |
5951 | #5 <= T05 p1.2 | |
5952 | #6 => vStopped | |
5953 | #7 <= OK | |
5954 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
5955 | #9 => vCont s:p1.1;c | |
5956 | ||
5957 | The last vCont above would resume thread p1.2 by mistake, because | |
5958 | the server has no idea that the event for p1.2 had not been | |
5959 | handled yet. | |
5960 | ||
5961 | The server side must similarly ignore resume actions for the | |
5962 | thread that has a pending %Stopped notification (and any other | |
5963 | threads with events pending), until GDB acks the notification | |
5964 | with vStopped. Otherwise, e.g., the following case is | |
5965 | mishandled: | |
5966 | ||
5967 | #1 => g (or any other packet) | |
5968 | #2 <= [registers] | |
5969 | #3 <= %Stopped T05 p1.2 | |
5970 | #4 => vCont s:p1.1;c | |
5971 | #5 <= OK | |
5972 | ||
5973 | Above, the server must not resume thread p1.2. GDB can't know | |
5974 | that p1.2 stopped until it acks the %Stopped notification, and | |
5975 | since from GDB's perspective all threads should be running, it | |
5976 | sends a "c" action. | |
5977 | ||
5978 | Finally, special care must also be given to handling fork/vfork | |
5979 | events. A (v)fork event actually tells us that two processes | |
5980 | stopped -- the parent and the child. Until we follow the fork, | |
5981 | we must not resume the child. Therefore, if we have a pending | |
5982 | fork follow, we must not send a global wildcard resume action | |
5983 | (vCont;c). We can still send process-wide wildcards though. */ | |
5984 | ||
5985 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
5986 | may_global_wildcard_vcont = 1; | |
5987 | ||
5988 | /* And assume every process is individually wildcard-able too. */ | |
5989 | ALL_NON_EXITED_INFERIORS (inf) | |
5990 | { | |
5991 | if (inf->priv == NULL) | |
5992 | inf->priv = XNEW (struct private_inferior); | |
5993 | inf->priv->may_wildcard_vcont = 1; | |
5994 | } | |
5995 | ||
5996 | /* Check for any pending events (not reported or processed yet) and | |
5997 | disable process and global wildcard resumes appropriately. */ | |
5998 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
5999 | ||
6000 | ALL_NON_EXITED_THREADS (tp) | |
6001 | { | |
6002 | /* If a thread of a process is not meant to be resumed, then we | |
6003 | can't wildcard that process. */ | |
6004 | if (!tp->executing) | |
6005 | { | |
6006 | tp->inf->priv->may_wildcard_vcont = 0; | |
6007 | ||
6008 | /* And if we can't wildcard a process, we can't wildcard | |
6009 | everything either. */ | |
6010 | may_global_wildcard_vcont = 0; | |
6011 | continue; | |
6012 | } | |
6013 | ||
6014 | /* If a thread is the parent of an unfollowed fork, then we | |
6015 | can't do a global wildcard, as that would resume the fork | |
6016 | child. */ | |
6017 | if (is_pending_fork_parent_thread (tp)) | |
6018 | may_global_wildcard_vcont = 0; | |
6019 | } | |
6020 | ||
6021 | /* Now let's build the vCont packet(s). Actions must be appended | |
6022 | from narrower to wider scopes (thread -> process -> global). If | |
6023 | we end up with too many actions for a single packet vcont_builder | |
6024 | flushes the current vCont packet to the remote side and starts a | |
6025 | new one. */ | |
6026 | vcont_builder_restart (&vcont_builder); | |
6027 | ||
6028 | /* Threads first. */ | |
6029 | ALL_NON_EXITED_THREADS (tp) | |
6030 | { | |
6031 | struct private_thread_info *remote_thr = tp->priv; | |
6032 | ||
6033 | if (!tp->executing || remote_thr->vcont_resumed) | |
6034 | continue; | |
6035 | ||
6036 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6037 | ||
6038 | if (!remote_thr->last_resume_step | |
6039 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
6040 | && tp->inf->priv->may_wildcard_vcont) | |
6041 | { | |
6042 | /* We'll send a wildcard resume instead. */ | |
6043 | remote_thr->vcont_resumed = 1; | |
6044 | continue; | |
6045 | } | |
6046 | ||
6047 | vcont_builder_push_action (&vcont_builder, tp->ptid, | |
6048 | remote_thr->last_resume_step, | |
6049 | remote_thr->last_resume_sig); | |
6050 | remote_thr->vcont_resumed = 1; | |
6051 | } | |
6052 | ||
6053 | /* Now check whether we can send any process-wide wildcard. This is | |
6054 | to avoid sending a global wildcard in the case nothing is | |
6055 | supposed to be resumed. */ | |
6056 | any_process_wildcard = 0; | |
6057 | ||
6058 | ALL_NON_EXITED_INFERIORS (inf) | |
6059 | { | |
6060 | if (inf->priv->may_wildcard_vcont) | |
6061 | { | |
6062 | any_process_wildcard = 1; | |
6063 | break; | |
6064 | } | |
6065 | } | |
6066 | ||
6067 | if (any_process_wildcard) | |
6068 | { | |
6069 | /* If all processes are wildcard-able, then send a single "c" | |
6070 | action, otherwise, send an "all (-1) threads of process" | |
6071 | continue action for each running process, if any. */ | |
6072 | if (may_global_wildcard_vcont) | |
6073 | { | |
6074 | vcont_builder_push_action (&vcont_builder, minus_one_ptid, | |
6075 | 0, GDB_SIGNAL_0); | |
6076 | } | |
6077 | else | |
6078 | { | |
6079 | ALL_NON_EXITED_INFERIORS (inf) | |
6080 | { | |
6081 | if (inf->priv->may_wildcard_vcont) | |
6082 | { | |
6083 | vcont_builder_push_action (&vcont_builder, | |
6084 | pid_to_ptid (inf->pid), | |
6085 | 0, GDB_SIGNAL_0); | |
6086 | } | |
6087 | } | |
6088 | } | |
6089 | } | |
6090 | ||
6091 | vcont_builder_flush (&vcont_builder); | |
6092 | } | |
6093 | ||
c906108c | 6094 | \f |
43ff13b4 | 6095 | |
74531fed PA |
6096 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6097 | thread, all threads of a remote process, or all threads of all | |
6098 | processes. */ | |
6099 | ||
6100 | static void | |
6101 | remote_stop_ns (ptid_t ptid) | |
6102 | { | |
6103 | struct remote_state *rs = get_remote_state (); | |
6104 | char *p = rs->buf; | |
6105 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6106 | |
4082afcc | 6107 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6108 | remote_vcont_probe (rs); |
6109 | ||
d458bd84 | 6110 | if (!rs->supports_vCont.t) |
74531fed PA |
6111 | error (_("Remote server does not support stopping threads")); |
6112 | ||
f91d3df5 PA |
6113 | if (ptid_equal (ptid, minus_one_ptid) |
6114 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6115 | p += xsnprintf (p, endp - p, "vCont;t"); |
6116 | else | |
6117 | { | |
6118 | ptid_t nptid; | |
6119 | ||
74531fed PA |
6120 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6121 | ||
6122 | if (ptid_is_pid (ptid)) | |
6123 | /* All (-1) threads of process. */ | |
ba348170 | 6124 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6125 | else |
6126 | { | |
6127 | /* Small optimization: if we already have a stop reply for | |
6128 | this thread, no use in telling the stub we want this | |
6129 | stopped. */ | |
6130 | if (peek_stop_reply (ptid)) | |
6131 | return; | |
6132 | ||
6133 | nptid = ptid; | |
6134 | } | |
6135 | ||
a9cbf802 | 6136 | write_ptid (p, endp, nptid); |
74531fed PA |
6137 | } |
6138 | ||
6139 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6140 | come in asynchronously by notification. */ | |
6141 | putpkt (rs->buf); | |
6142 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6143 | if (strcmp (rs->buf, "OK") != 0) | |
6144 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6145 | } | |
6146 | ||
bfedc46a PA |
6147 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6148 | interrupt the remote target. It is undefined which thread of which | |
6149 | process reports the interrupt. */ | |
74531fed PA |
6150 | |
6151 | static void | |
de979965 | 6152 | remote_interrupt_as (void) |
74531fed PA |
6153 | { |
6154 | struct remote_state *rs = get_remote_state (); | |
6155 | ||
3a29589a DJ |
6156 | rs->ctrlc_pending_p = 1; |
6157 | ||
74531fed PA |
6158 | /* If the inferior is stopped already, but the core didn't know |
6159 | about it yet, just ignore the request. The cached wait status | |
6160 | will be collected in remote_wait. */ | |
6161 | if (rs->cached_wait_status) | |
6162 | return; | |
6163 | ||
9a7071a8 JB |
6164 | /* Send interrupt_sequence to remote target. */ |
6165 | send_interrupt_sequence (); | |
74531fed PA |
6166 | } |
6167 | ||
de979965 PA |
6168 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6169 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6170 | reports the interrupt. Throws an error if the packet is not |
6171 | supported by the server. */ | |
de979965 | 6172 | |
e42de8c7 | 6173 | static void |
de979965 PA |
6174 | remote_interrupt_ns (void) |
6175 | { | |
6176 | struct remote_state *rs = get_remote_state (); | |
6177 | char *p = rs->buf; | |
6178 | char *endp = rs->buf + get_remote_packet_size (); | |
6179 | ||
6180 | xsnprintf (p, endp - p, "vCtrlC"); | |
6181 | ||
6182 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6183 | come in asynchronously by notification. */ | |
6184 | putpkt (rs->buf); | |
6185 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6186 | ||
6187 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6188 | { | |
6189 | case PACKET_OK: | |
6190 | break; | |
6191 | case PACKET_UNKNOWN: | |
e42de8c7 | 6192 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6193 | case PACKET_ERROR: |
6194 | error (_("Interrupting target failed: %s"), rs->buf); | |
6195 | } | |
de979965 PA |
6196 | } |
6197 | ||
bfedc46a | 6198 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6199 | |
c906108c | 6200 | static void |
1eab8a48 | 6201 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 6202 | { |
7a292a7a | 6203 | if (remote_debug) |
0f71a2f6 | 6204 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6205 | |
6efcd9a8 | 6206 | if (target_is_non_stop_p ()) |
74531fed | 6207 | remote_stop_ns (ptid); |
c906108c | 6208 | else |
bfedc46a PA |
6209 | { |
6210 | /* We don't currently have a way to transparently pause the | |
6211 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6212 | remote_interrupt_as (); |
bfedc46a PA |
6213 | } |
6214 | } | |
6215 | ||
6216 | /* Implement the to_interrupt function for the remote targets. */ | |
6217 | ||
6218 | static void | |
6219 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
6220 | { | |
e42de8c7 PA |
6221 | struct remote_state *rs = get_remote_state (); |
6222 | ||
bfedc46a PA |
6223 | if (remote_debug) |
6224 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6225 | ||
e42de8c7 PA |
6226 | if (target_is_non_stop_p ()) |
6227 | remote_interrupt_ns (); | |
bfedc46a | 6228 | else |
e42de8c7 | 6229 | remote_interrupt_as (); |
c906108c SS |
6230 | } |
6231 | ||
93692b58 PA |
6232 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6233 | ||
6234 | static void | |
6235 | remote_pass_ctrlc (struct target_ops *self) | |
6236 | { | |
6237 | struct remote_state *rs = get_remote_state (); | |
6238 | ||
6239 | if (remote_debug) | |
6240 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6241 | ||
6242 | /* If we're starting up, we're not fully synced yet. Quit | |
6243 | immediately. */ | |
6244 | if (rs->starting_up) | |
6245 | quit (); | |
6246 | /* If ^C has already been sent once, offer to disconnect. */ | |
6247 | else if (rs->ctrlc_pending_p) | |
6248 | interrupt_query (); | |
6249 | else | |
6250 | target_interrupt (inferior_ptid); | |
6251 | } | |
6252 | ||
c906108c SS |
6253 | /* Ask the user what to do when an interrupt is received. */ |
6254 | ||
6255 | static void | |
fba45db2 | 6256 | interrupt_query (void) |
c906108c | 6257 | { |
abc56d60 | 6258 | struct remote_state *rs = get_remote_state (); |
c906108c | 6259 | |
abc56d60 | 6260 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6261 | { |
abc56d60 PA |
6262 | if (query (_("The target is not responding to interrupt requests.\n" |
6263 | "Stop debugging it? "))) | |
74531fed | 6264 | { |
78a095c3 | 6265 | remote_unpush_target (); |
abc56d60 | 6266 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6267 | } |
6268 | } | |
abc56d60 PA |
6269 | else |
6270 | { | |
6271 | if (query (_("Interrupted while waiting for the program.\n" | |
6272 | "Give up waiting? "))) | |
6273 | quit (); | |
6274 | } | |
c906108c SS |
6275 | } |
6276 | ||
6426a772 JM |
6277 | /* Enable/disable target terminal ownership. Most targets can use |
6278 | terminal groups to control terminal ownership. Remote targets are | |
6279 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6280 | is required. */ |
6426a772 JM |
6281 | |
6282 | static void | |
d2f640d4 | 6283 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 6284 | { |
d9d2d8b6 PA |
6285 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
6286 | idempotent. The event-loop GDB talking to an asynchronous target | |
6287 | with a synchronous command calls this function from both | |
6288 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
6289 | transfer the terminal to the target when it shouldn't this guard | |
6290 | can go away. */ | |
6426a772 JM |
6291 | if (!remote_async_terminal_ours_p) |
6292 | return; | |
6426a772 | 6293 | remote_async_terminal_ours_p = 0; |
6426a772 JM |
6294 | /* NOTE: At this point we could also register our selves as the |
6295 | recipient of all input. Any characters typed could then be | |
23860348 | 6296 | passed on down to the target. */ |
6426a772 JM |
6297 | } |
6298 | ||
6299 | static void | |
e3594fd1 | 6300 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 6301 | { |
75c99385 | 6302 | /* See FIXME in remote_terminal_inferior. */ |
6426a772 JM |
6303 | if (remote_async_terminal_ours_p) |
6304 | return; | |
6426a772 JM |
6305 | remote_async_terminal_ours_p = 1; |
6306 | } | |
6307 | ||
176a6961 | 6308 | static void |
917317f4 | 6309 | remote_console_output (char *msg) |
c906108c SS |
6310 | { |
6311 | char *p; | |
6312 | ||
c5aa993b | 6313 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6314 | { |
6315 | char tb[2]; | |
6316 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6317 | |
c906108c SS |
6318 | tb[0] = c; |
6319 | tb[1] = 0; | |
43ff13b4 | 6320 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6321 | } |
00db5b94 PA |
6322 | gdb_flush (gdb_stdtarg); |
6323 | } | |
74531fed | 6324 | |
74531fed PA |
6325 | DEF_VEC_O(cached_reg_t); |
6326 | ||
722247f1 | 6327 | typedef struct stop_reply |
74531fed | 6328 | { |
722247f1 | 6329 | struct notif_event base; |
74531fed | 6330 | |
722247f1 | 6331 | /* The identifier of the thread about this event */ |
74531fed PA |
6332 | ptid_t ptid; |
6333 | ||
340e3c99 | 6334 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6335 | connection, represented by a remote_state object, is closed, |
6336 | all the associated stop_reply events should be released. */ | |
6337 | struct remote_state *rs; | |
6338 | ||
74531fed PA |
6339 | struct target_waitstatus ws; |
6340 | ||
15148d6a PA |
6341 | /* Expedited registers. This makes remote debugging a bit more |
6342 | efficient for those targets that provide critical registers as | |
6343 | part of their normal status mechanism (as another roundtrip to | |
6344 | fetch them is avoided). */ | |
74531fed PA |
6345 | VEC(cached_reg_t) *regcache; |
6346 | ||
f7e6eed5 PA |
6347 | enum target_stop_reason stop_reason; |
6348 | ||
74531fed PA |
6349 | CORE_ADDR watch_data_address; |
6350 | ||
dc146f7c | 6351 | int core; |
722247f1 | 6352 | } *stop_reply_p; |
a744cf53 | 6353 | |
722247f1 YQ |
6354 | DECLARE_QUEUE_P (stop_reply_p); |
6355 | DEFINE_QUEUE_P (stop_reply_p); | |
6356 | /* The list of already fetched and acknowledged stop events. This | |
6357 | queue is used for notification Stop, and other notifications | |
6358 | don't need queue for their events, because the notification events | |
6359 | of Stop can't be consumed immediately, so that events should be | |
6360 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6361 | time. Other notifications can consume their events immediately, | |
6362 | so queue is not needed for them. */ | |
6363 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6364 | |
6365 | static void | |
6366 | stop_reply_xfree (struct stop_reply *r) | |
6367 | { | |
f48ff2a7 | 6368 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6369 | } |
6370 | ||
221e1a37 PA |
6371 | /* Return the length of the stop reply queue. */ |
6372 | ||
6373 | static int | |
6374 | stop_reply_queue_length (void) | |
6375 | { | |
6376 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6377 | } | |
6378 | ||
722247f1 YQ |
6379 | static void |
6380 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6381 | struct notif_event *event) | |
6382 | { | |
6383 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6384 | } | |
6385 | ||
6386 | static void | |
6387 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6388 | struct notif_event *event) | |
6389 | { | |
6390 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6391 | ||
6392 | /* acknowledge */ | |
f5c4fcd9 | 6393 | putpkt (self->ack_command); |
722247f1 YQ |
6394 | |
6395 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6396 | /* We got an unknown stop reply. */ | |
6397 | error (_("Unknown stop reply")); | |
6398 | ||
6399 | push_stop_reply (stop_reply); | |
6400 | } | |
6401 | ||
6402 | static int | |
6403 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6404 | { | |
6405 | /* We can't get pending events in remote_notif_process for | |
6406 | notification stop, and we have to do this in remote_wait_ns | |
6407 | instead. If we fetch all queued events from stub, remote stub | |
6408 | may exit and we have no chance to process them back in | |
6409 | remote_wait_ns. */ | |
6410 | mark_async_event_handler (remote_async_inferior_event_token); | |
6411 | return 0; | |
6412 | } | |
6413 | ||
6414 | static void | |
6415 | stop_reply_dtr (struct notif_event *event) | |
6416 | { | |
6417 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6418 | cached_reg_t *reg; |
6419 | int ix; | |
6420 | ||
6421 | for (ix = 0; | |
6422 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6423 | ix++) | |
6424 | xfree (reg->data); | |
722247f1 YQ |
6425 | |
6426 | VEC_free (cached_reg_t, r->regcache); | |
6427 | } | |
6428 | ||
6429 | static struct notif_event * | |
6430 | remote_notif_stop_alloc_reply (void) | |
6431 | { | |
8d749320 SM |
6432 | /* We cast to a pointer to the "base class". */ |
6433 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6434 | |
6435 | r->dtr = stop_reply_dtr; | |
6436 | ||
6437 | return r; | |
6438 | } | |
6439 | ||
6440 | /* A client of notification Stop. */ | |
6441 | ||
6442 | struct notif_client notif_client_stop = | |
6443 | { | |
6444 | "Stop", | |
6445 | "vStopped", | |
6446 | remote_notif_stop_parse, | |
6447 | remote_notif_stop_ack, | |
6448 | remote_notif_stop_can_get_pending_events, | |
6449 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6450 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6451 | }; |
6452 | ||
6453 | /* A parameter to pass data in and out. */ | |
6454 | ||
6455 | struct queue_iter_param | |
6456 | { | |
6457 | void *input; | |
6458 | struct stop_reply *output; | |
6459 | }; | |
6460 | ||
85ad3aaf | 6461 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6462 | the pid of the process that owns the threads we want to check, or |
6463 | -1 if we want to check all threads. */ | |
6464 | ||
6465 | static int | |
6466 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6467 | ptid_t thread_ptid) | |
6468 | { | |
6469 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6470 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6471 | { | |
6472 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6473 | return 1; | |
6474 | } | |
6475 | ||
6476 | return 0; | |
6477 | } | |
6478 | ||
85ad3aaf PA |
6479 | /* Return the thread's pending status used to determine whether the |
6480 | thread is a fork parent stopped at a fork event. */ | |
6481 | ||
6482 | static struct target_waitstatus * | |
6483 | thread_pending_fork_status (struct thread_info *thread) | |
6484 | { | |
6485 | if (thread->suspend.waitstatus_pending_p) | |
6486 | return &thread->suspend.waitstatus; | |
6487 | else | |
6488 | return &thread->pending_follow; | |
6489 | } | |
6490 | ||
6491 | /* Determine if THREAD is a pending fork parent thread. */ | |
6492 | ||
6493 | static int | |
6494 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6495 | { | |
6496 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6497 | int pid = -1; | |
6498 | ||
6499 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6500 | } | |
6501 | ||
cbb8991c DB |
6502 | /* Check whether EVENT is a fork event, and if it is, remove the |
6503 | fork child from the context list passed in DATA. */ | |
6504 | ||
6505 | static int | |
6506 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6507 | QUEUE_ITER (stop_reply_p) *iter, | |
6508 | stop_reply_p event, | |
6509 | void *data) | |
6510 | { | |
19ba03f4 SM |
6511 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6512 | struct threads_listing_context *context | |
6513 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6514 | |
6515 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6516 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6517 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6518 | threads_listing_context_remove (&event->ws, context); | |
cbb8991c DB |
6519 | |
6520 | return 1; | |
6521 | } | |
6522 | ||
6523 | /* If CONTEXT contains any fork child threads that have not been | |
6524 | reported yet, remove them from the CONTEXT list. If such a | |
6525 | thread exists it is because we are stopped at a fork catchpoint | |
6526 | and have not yet called follow_fork, which will set up the | |
6527 | host-side data structures for the new process. */ | |
6528 | ||
6529 | static void | |
6530 | remove_new_fork_children (struct threads_listing_context *context) | |
6531 | { | |
6532 | struct thread_info * thread; | |
6533 | int pid = -1; | |
6534 | struct notif_client *notif = ¬if_client_stop; | |
6535 | struct queue_iter_param param; | |
6536 | ||
6537 | /* For any threads stopped at a fork event, remove the corresponding | |
6538 | fork child threads from the CONTEXT list. */ | |
6539 | ALL_NON_EXITED_THREADS (thread) | |
6540 | { | |
85ad3aaf | 6541 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6542 | |
6543 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
6544 | { | |
6545 | threads_listing_context_remove (ws, context); | |
6546 | } | |
6547 | } | |
6548 | ||
6549 | /* Check for any pending fork events (not reported or processed yet) | |
6550 | in process PID and remove those fork child threads from the | |
6551 | CONTEXT list as well. */ | |
6552 | remote_notif_get_pending_events (notif); | |
6553 | param.input = context; | |
6554 | param.output = NULL; | |
6555 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6556 | remove_child_of_pending_fork, ¶m); | |
6557 | } | |
6558 | ||
85ad3aaf PA |
6559 | /* Check whether EVENT would prevent a global or process wildcard |
6560 | vCont action. */ | |
6561 | ||
6562 | static int | |
6563 | check_pending_event_prevents_wildcard_vcont_callback | |
6564 | (QUEUE (stop_reply_p) *q, | |
6565 | QUEUE_ITER (stop_reply_p) *iter, | |
6566 | stop_reply_p event, | |
6567 | void *data) | |
6568 | { | |
6569 | struct inferior *inf; | |
6570 | int *may_global_wildcard_vcont = (int *) data; | |
6571 | ||
6572 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6573 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6574 | return 1; | |
6575 | ||
6576 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6577 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6578 | *may_global_wildcard_vcont = 0; | |
6579 | ||
6580 | inf = find_inferior_ptid (event->ptid); | |
6581 | ||
6582 | /* This may be the first time we heard about this process. | |
6583 | Regardless, we must not do a global wildcard resume, otherwise | |
6584 | we'd resume this process too. */ | |
6585 | *may_global_wildcard_vcont = 0; | |
6586 | if (inf != NULL) | |
6587 | inf->priv->may_wildcard_vcont = 0; | |
6588 | ||
6589 | return 1; | |
6590 | } | |
6591 | ||
6592 | /* Check whether any event pending in the vStopped queue would prevent | |
6593 | a global or process wildcard vCont action. Clear | |
6594 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6595 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6596 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6597 | ||
6598 | static void | |
6599 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6600 | { | |
6601 | struct notif_client *notif = ¬if_client_stop; | |
6602 | ||
6603 | remote_notif_get_pending_events (notif); | |
6604 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6605 | check_pending_event_prevents_wildcard_vcont_callback, | |
6606 | may_global_wildcard); | |
6607 | } | |
6608 | ||
f48ff2a7 YQ |
6609 | /* Remove stop replies in the queue if its pid is equal to the given |
6610 | inferior's pid. */ | |
722247f1 YQ |
6611 | |
6612 | static int | |
f48ff2a7 YQ |
6613 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6614 | QUEUE_ITER (stop_reply_p) *iter, | |
6615 | stop_reply_p event, | |
6616 | void *data) | |
722247f1 | 6617 | { |
19ba03f4 SM |
6618 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6619 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6620 | |
f48ff2a7 | 6621 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6622 | { |
6623 | stop_reply_xfree (event); | |
6624 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6625 | } | |
6626 | ||
6627 | return 1; | |
6628 | } | |
6629 | ||
f48ff2a7 | 6630 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6631 | |
74531fed | 6632 | static void |
5f4cf0bb | 6633 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6634 | { |
722247f1 | 6635 | struct queue_iter_param param; |
f48ff2a7 YQ |
6636 | struct stop_reply *reply; |
6637 | struct remote_state *rs = get_remote_state (); | |
6638 | struct remote_notif_state *rns = rs->notif_state; | |
6639 | ||
6640 | /* This function can be notified when an inferior exists. When the | |
6641 | target is not remote, the notification state is NULL. */ | |
6642 | if (rs->remote_desc == NULL) | |
6643 | return; | |
6644 | ||
6645 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6646 | |
74531fed | 6647 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6648 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6649 | { |
722247f1 | 6650 | stop_reply_xfree (reply); |
f48ff2a7 | 6651 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6652 | } |
c906108c | 6653 | |
722247f1 YQ |
6654 | param.input = inf; |
6655 | param.output = NULL; | |
74531fed PA |
6656 | /* Discard the stop replies we have already pulled with |
6657 | vStopped. */ | |
722247f1 | 6658 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6659 | remove_stop_reply_for_inferior, ¶m); |
6660 | } | |
6661 | ||
bcc75809 YQ |
6662 | /* If its remote state is equal to the given remote state, |
6663 | remove EVENT from the stop reply queue. */ | |
6664 | ||
6665 | static int | |
6666 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6667 | QUEUE_ITER (stop_reply_p) *iter, | |
6668 | stop_reply_p event, | |
6669 | void *data) | |
6670 | { | |
19ba03f4 SM |
6671 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6672 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6673 | |
6674 | if (event->rs == rs) | |
6675 | { | |
6676 | stop_reply_xfree (event); | |
6677 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6678 | } | |
6679 | ||
6680 | return 1; | |
6681 | } | |
6682 | ||
6683 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6684 | |
6685 | static void | |
bcc75809 | 6686 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6687 | { |
6688 | struct queue_iter_param param; | |
6689 | ||
bcc75809 | 6690 | param.input = rs; |
f48ff2a7 YQ |
6691 | param.output = NULL; |
6692 | /* Discard the stop replies we have already pulled with | |
6693 | vStopped. */ | |
6694 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6695 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6696 | } |
74531fed | 6697 | |
722247f1 YQ |
6698 | /* A parameter to pass data in and out. */ |
6699 | ||
6700 | static int | |
6701 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6702 | QUEUE_ITER (stop_reply_p) *iter, | |
6703 | stop_reply_p event, | |
6704 | void *data) | |
6705 | { | |
19ba03f4 SM |
6706 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6707 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6708 | |
6709 | if (ptid_match (event->ptid, *ptid)) | |
6710 | { | |
6711 | param->output = event; | |
6712 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6713 | return 0; | |
c8e38a49 | 6714 | } |
722247f1 YQ |
6715 | |
6716 | return 1; | |
74531fed | 6717 | } |
43ff13b4 | 6718 | |
722247f1 YQ |
6719 | /* Remove the first reply in 'stop_reply_queue' which matches |
6720 | PTID. */ | |
2e9f7625 | 6721 | |
722247f1 YQ |
6722 | static struct stop_reply * |
6723 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6724 | { |
722247f1 YQ |
6725 | struct queue_iter_param param; |
6726 | ||
6727 | param.input = &ptid; | |
6728 | param.output = NULL; | |
6729 | ||
6730 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6731 | remote_notif_remove_once_on_match, ¶m); | |
6732 | if (notif_debug) | |
6733 | fprintf_unfiltered (gdb_stdlog, | |
6734 | "notif: discard queued event: 'Stop' in %s\n", | |
6735 | target_pid_to_str (ptid)); | |
a744cf53 | 6736 | |
722247f1 | 6737 | return param.output; |
74531fed | 6738 | } |
75c99385 | 6739 | |
74531fed PA |
6740 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6741 | remove it from the queue, and return it. Returns NULL if none is | |
6742 | found. If there are still queued events left to process, tell the | |
6743 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6744 | |
74531fed PA |
6745 | static struct stop_reply * |
6746 | queued_stop_reply (ptid_t ptid) | |
6747 | { | |
722247f1 | 6748 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6749 | |
722247f1 | 6750 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6751 | /* There's still at least an event left. */ |
6752 | mark_async_event_handler (remote_async_inferior_event_token); | |
6753 | ||
722247f1 | 6754 | return r; |
74531fed PA |
6755 | } |
6756 | ||
6757 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6758 | know that we now have at least one queued event left to pass to the | |
6759 | core side, tell the event loop to get back to target_wait soon. */ | |
6760 | ||
6761 | static void | |
6762 | push_stop_reply (struct stop_reply *new_event) | |
6763 | { | |
722247f1 | 6764 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6765 | |
722247f1 YQ |
6766 | if (notif_debug) |
6767 | fprintf_unfiltered (gdb_stdlog, | |
6768 | "notif: push 'Stop' %s to queue %d\n", | |
6769 | target_pid_to_str (new_event->ptid), | |
6770 | QUEUE_length (stop_reply_p, | |
6771 | stop_reply_queue)); | |
74531fed PA |
6772 | |
6773 | mark_async_event_handler (remote_async_inferior_event_token); | |
6774 | } | |
6775 | ||
722247f1 YQ |
6776 | static int |
6777 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6778 | QUEUE_ITER (stop_reply_p) *iter, | |
6779 | struct stop_reply *event, | |
6780 | void *data) | |
6781 | { | |
19ba03f4 | 6782 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6783 | |
6784 | return !(ptid_equal (*ptid, event->ptid) | |
6785 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6786 | } | |
6787 | ||
74531fed PA |
6788 | /* Returns true if we have a stop reply for PTID. */ |
6789 | ||
6790 | static int | |
6791 | peek_stop_reply (ptid_t ptid) | |
6792 | { | |
722247f1 YQ |
6793 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6794 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6795 | } |
6796 | ||
26d56a93 SL |
6797 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6798 | starting with P and ending with PEND matches PREFIX. */ | |
6799 | ||
6800 | static int | |
6801 | strprefix (const char *p, const char *pend, const char *prefix) | |
6802 | { | |
6803 | for ( ; p < pend; p++, prefix++) | |
6804 | if (*p != *prefix) | |
6805 | return 0; | |
6806 | return *prefix == '\0'; | |
6807 | } | |
6808 | ||
74531fed PA |
6809 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6810 | result is stored in EVENT, or throws an error. */ | |
6811 | ||
6812 | static void | |
6813 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6814 | { | |
6815 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6816 | ULONGEST addr; | |
6817 | char *p; | |
94585166 | 6818 | int skipregs = 0; |
74531fed PA |
6819 | |
6820 | event->ptid = null_ptid; | |
bcc75809 | 6821 | event->rs = get_remote_state (); |
74531fed PA |
6822 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6823 | event->ws.value.integer = 0; | |
f7e6eed5 | 6824 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6825 | event->regcache = NULL; |
dc146f7c | 6826 | event->core = -1; |
74531fed PA |
6827 | |
6828 | switch (buf[0]) | |
6829 | { | |
6830 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6831 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6832 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6833 | ss = signal number | |
6834 | n... = register number | |
6835 | r... = register contents | |
6836 | */ | |
6837 | ||
6838 | p = &buf[3]; /* after Txx */ | |
6839 | while (*p) | |
6840 | { | |
6841 | char *p1; | |
cea39f65 | 6842 | int fieldsize; |
43ff13b4 | 6843 | |
1f10ba14 PA |
6844 | p1 = strchr (p, ':'); |
6845 | if (p1 == NULL) | |
6846 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6847 | Packet: '%s'\n"), | |
6848 | p, buf); | |
6849 | if (p == p1) | |
6850 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6851 | Packet: '%s'\n"), | |
6852 | p, buf); | |
3c3bea1c | 6853 | |
1f10ba14 PA |
6854 | /* Some "registers" are actually extended stop information. |
6855 | Note if you're adding a new entry here: GDB 7.9 and | |
6856 | earlier assume that all register "numbers" that start | |
6857 | with an hex digit are real register numbers. Make sure | |
6858 | the server only sends such a packet if it knows the | |
6859 | client understands it. */ | |
c8e38a49 | 6860 | |
26d56a93 | 6861 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6862 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6863 | else if (strprefix (p, p1, "syscall_entry")) |
6864 | { | |
6865 | ULONGEST sysno; | |
6866 | ||
6867 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6868 | p = unpack_varlen_hex (++p1, &sysno); | |
6869 | event->ws.value.syscall_number = (int) sysno; | |
6870 | } | |
6871 | else if (strprefix (p, p1, "syscall_return")) | |
6872 | { | |
6873 | ULONGEST sysno; | |
6874 | ||
6875 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6876 | p = unpack_varlen_hex (++p1, &sysno); | |
6877 | event->ws.value.syscall_number = (int) sysno; | |
6878 | } | |
26d56a93 SL |
6879 | else if (strprefix (p, p1, "watch") |
6880 | || strprefix (p, p1, "rwatch") | |
6881 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6882 | { |
f7e6eed5 | 6883 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6884 | p = unpack_varlen_hex (++p1, &addr); |
6885 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6886 | } |
26d56a93 | 6887 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6888 | { |
6889 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6890 | ||
6891 | /* Make sure the stub doesn't forget to indicate support | |
6892 | with qSupported. */ | |
6893 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6894 | error (_("Unexpected swbreak stop reason")); | |
6895 | ||
6896 | /* The value part is documented as "must be empty", | |
6897 | though we ignore it, in case we ever decide to make | |
6898 | use of it in a backward compatible way. */ | |
8424cc97 | 6899 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6900 | } |
26d56a93 | 6901 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6902 | { |
6903 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6904 | ||
6905 | /* Make sure the stub doesn't forget to indicate support | |
6906 | with qSupported. */ | |
6907 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6908 | error (_("Unexpected hwbreak stop reason")); | |
6909 | ||
6910 | /* See above. */ | |
8424cc97 | 6911 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6912 | } |
26d56a93 | 6913 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6914 | { |
1f10ba14 | 6915 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 6916 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6917 | } |
26d56a93 | 6918 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6919 | { |
6920 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6921 | /* p1 will indicate "begin" or "end", but it makes | |
6922 | no difference for now, so ignore it. */ | |
8424cc97 | 6923 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6924 | } |
26d56a93 | 6925 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6926 | { |
6927 | ULONGEST c; | |
a744cf53 | 6928 | |
1f10ba14 PA |
6929 | p = unpack_varlen_hex (++p1, &c); |
6930 | event->core = c; | |
cea39f65 | 6931 | } |
26d56a93 | 6932 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6933 | { |
6934 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6935 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6936 | } | |
26d56a93 | 6937 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6938 | { |
6939 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6940 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6941 | } | |
26d56a93 | 6942 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6943 | { |
6944 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 6945 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 6946 | } |
6ab24463 | 6947 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6948 | { |
6949 | ULONGEST ignored; | |
6950 | char pathname[PATH_MAX]; | |
6951 | int pathlen; | |
6952 | ||
6953 | /* Determine the length of the execd pathname. */ | |
6954 | p = unpack_varlen_hex (++p1, &ignored); | |
6955 | pathlen = (p - p1) / 2; | |
6956 | ||
6957 | /* Save the pathname for event reporting and for | |
6958 | the next run command. */ | |
6959 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6960 | pathname[pathlen] = '\0'; | |
6961 | ||
6962 | /* This is freed during event handling. */ | |
6963 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6964 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6965 | ||
6966 | /* Skip the registers included in this packet, since | |
6967 | they may be for an architecture different from the | |
6968 | one used by the original program. */ | |
6969 | skipregs = 1; | |
6970 | } | |
65706a29 PA |
6971 | else if (strprefix (p, p1, "create")) |
6972 | { | |
6973 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 6974 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 6975 | } |
cea39f65 MS |
6976 | else |
6977 | { | |
1f10ba14 PA |
6978 | ULONGEST pnum; |
6979 | char *p_temp; | |
6980 | ||
94585166 DB |
6981 | if (skipregs) |
6982 | { | |
8424cc97 | 6983 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
6984 | p++; |
6985 | continue; | |
6986 | } | |
6987 | ||
1f10ba14 PA |
6988 | /* Maybe a real ``P'' register number. */ |
6989 | p_temp = unpack_varlen_hex (p, &pnum); | |
6990 | /* If the first invalid character is the colon, we got a | |
6991 | register number. Otherwise, it's an unknown stop | |
6992 | reason. */ | |
6993 | if (p_temp == p1) | |
6994 | { | |
6995 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6996 | cached_reg_t cached_reg; | |
d1dff226 | 6997 | struct gdbarch *gdbarch = target_gdbarch (); |
43ff13b4 | 6998 | |
1f10ba14 PA |
6999 | if (reg == NULL) |
7000 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7001 | Packet: '%s'\n"), |
1f10ba14 | 7002 | hex_string (pnum), p, buf); |
c8e38a49 | 7003 | |
1f10ba14 | 7004 | cached_reg.num = reg->regnum; |
d1dff226 AH |
7005 | cached_reg.data = (gdb_byte *) |
7006 | xmalloc (register_size (gdbarch, reg->regnum)); | |
4100683b | 7007 | |
1f10ba14 PA |
7008 | p = p1 + 1; |
7009 | fieldsize = hex2bin (p, cached_reg.data, | |
d1dff226 | 7010 | register_size (gdbarch, reg->regnum)); |
1f10ba14 | 7011 | p += 2 * fieldsize; |
d1dff226 | 7012 | if (fieldsize < register_size (gdbarch, reg->regnum)) |
1f10ba14 | 7013 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7014 | |
1f10ba14 PA |
7015 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
7016 | } | |
7017 | else | |
7018 | { | |
7019 | /* Not a number. Silently skip unknown optional | |
7020 | info. */ | |
8424cc97 | 7021 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7022 | } |
cea39f65 | 7023 | } |
c8e38a49 | 7024 | |
cea39f65 MS |
7025 | if (*p != ';') |
7026 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7027 | buf, p); | |
7028 | ++p; | |
7029 | } | |
5b5596ff PA |
7030 | |
7031 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7032 | break; | |
7033 | ||
c8e38a49 PA |
7034 | /* fall through */ |
7035 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7036 | { |
7037 | int sig; | |
7038 | ||
7039 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7040 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7041 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7042 | event->ws.value.sig = (enum gdb_signal) sig; | |
7043 | else | |
7044 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7045 | } | |
c8e38a49 | 7046 | break; |
65706a29 PA |
7047 | case 'w': /* Thread exited. */ |
7048 | { | |
7049 | char *p; | |
7050 | ULONGEST value; | |
7051 | ||
7052 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7053 | p = unpack_varlen_hex (&buf[1], &value); | |
7054 | event->ws.value.integer = value; | |
7055 | if (*p != ';') | |
7056 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7057 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7058 | break; |
7059 | } | |
c8e38a49 PA |
7060 | case 'W': /* Target exited. */ |
7061 | case 'X': | |
7062 | { | |
7063 | char *p; | |
7064 | int pid; | |
7065 | ULONGEST value; | |
82f73884 | 7066 | |
c8e38a49 PA |
7067 | /* GDB used to accept only 2 hex chars here. Stubs should |
7068 | only send more if they detect GDB supports multi-process | |
7069 | support. */ | |
7070 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7071 | |
c8e38a49 PA |
7072 | if (buf[0] == 'W') |
7073 | { | |
7074 | /* The remote process exited. */ | |
74531fed PA |
7075 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7076 | event->ws.value.integer = value; | |
c8e38a49 PA |
7077 | } |
7078 | else | |
7079 | { | |
7080 | /* The remote process exited with a signal. */ | |
74531fed | 7081 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7082 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7083 | event->ws.value.sig = (enum gdb_signal) value; | |
7084 | else | |
7085 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7086 | } |
82f73884 | 7087 | |
c8e38a49 PA |
7088 | /* If no process is specified, assume inferior_ptid. */ |
7089 | pid = ptid_get_pid (inferior_ptid); | |
7090 | if (*p == '\0') | |
7091 | ; | |
7092 | else if (*p == ';') | |
7093 | { | |
7094 | p++; | |
7095 | ||
0b24eb2d | 7096 | if (*p == '\0') |
82f73884 | 7097 | ; |
61012eef | 7098 | else if (startswith (p, "process:")) |
82f73884 | 7099 | { |
c8e38a49 | 7100 | ULONGEST upid; |
a744cf53 | 7101 | |
c8e38a49 PA |
7102 | p += sizeof ("process:") - 1; |
7103 | unpack_varlen_hex (p, &upid); | |
7104 | pid = upid; | |
82f73884 PA |
7105 | } |
7106 | else | |
7107 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7108 | } |
c8e38a49 PA |
7109 | else |
7110 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7111 | event->ptid = pid_to_ptid (pid); |
7112 | } | |
7113 | break; | |
f2faf941 PA |
7114 | case 'N': |
7115 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7116 | event->ptid = minus_one_ptid; | |
7117 | break; | |
74531fed PA |
7118 | } |
7119 | ||
6efcd9a8 | 7120 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7121 | error (_("No process or thread specified in stop reply: %s"), buf); |
7122 | } | |
7123 | ||
722247f1 YQ |
7124 | /* When the stub wants to tell GDB about a new notification reply, it |
7125 | sends a notification (%Stop, for example). Those can come it at | |
7126 | any time, hence, we have to make sure that any pending | |
7127 | putpkt/getpkt sequence we're making is finished, before querying | |
7128 | the stub for more events with the corresponding ack command | |
7129 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7130 | immediately upon receiving the notification, something like this | |
7131 | could happen: | |
74531fed PA |
7132 | |
7133 | 1.1) --> Hg 1 | |
7134 | 1.2) <-- OK | |
7135 | 1.3) --> g | |
7136 | 1.4) <-- %Stop | |
7137 | 1.5) --> vStopped | |
7138 | 1.6) <-- (registers reply to step #1.3) | |
7139 | ||
7140 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7141 | query. | |
7142 | ||
796cb314 | 7143 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7144 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7145 | doing whatever we were doing: | |
7146 | ||
7147 | 2.1) --> Hg 1 | |
7148 | 2.2) <-- OK | |
7149 | 2.3) --> g | |
7150 | 2.4) <-- %Stop | |
7151 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7152 | 2.5) <-- (registers reply to step #2.3) | |
7153 | ||
7154 | Eventualy after step #2.5, we return to the event loop, which | |
7155 | notices there's an event on the | |
7156 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7157 | associated callback --- the function below. At this point, we're | |
7158 | always safe to start a vStopped sequence. : | |
7159 | ||
7160 | 2.6) --> vStopped | |
7161 | 2.7) <-- T05 thread:2 | |
7162 | 2.8) --> vStopped | |
7163 | 2.9) --> OK | |
7164 | */ | |
7165 | ||
722247f1 YQ |
7166 | void |
7167 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7168 | { |
7169 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7170 | |
f48ff2a7 | 7171 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7172 | { |
722247f1 YQ |
7173 | if (notif_debug) |
7174 | fprintf_unfiltered (gdb_stdlog, | |
7175 | "notif: process: '%s' ack pending event\n", | |
7176 | nc->name); | |
74531fed | 7177 | |
722247f1 | 7178 | /* acknowledge */ |
f48ff2a7 YQ |
7179 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7180 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7181 | |
7182 | while (1) | |
7183 | { | |
7184 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7185 | if (strcmp (rs->buf, "OK") == 0) | |
7186 | break; | |
7187 | else | |
722247f1 | 7188 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7189 | } |
7190 | } | |
722247f1 YQ |
7191 | else |
7192 | { | |
7193 | if (notif_debug) | |
7194 | fprintf_unfiltered (gdb_stdlog, | |
7195 | "notif: process: '%s' no pending reply\n", | |
7196 | nc->name); | |
7197 | } | |
74531fed PA |
7198 | } |
7199 | ||
74531fed PA |
7200 | /* Called when it is decided that STOP_REPLY holds the info of the |
7201 | event that is to be returned to the core. This function always | |
7202 | destroys STOP_REPLY. */ | |
7203 | ||
7204 | static ptid_t | |
7205 | process_stop_reply (struct stop_reply *stop_reply, | |
7206 | struct target_waitstatus *status) | |
7207 | { | |
7208 | ptid_t ptid; | |
7209 | ||
7210 | *status = stop_reply->ws; | |
7211 | ptid = stop_reply->ptid; | |
7212 | ||
7213 | /* If no thread/process was reported by the stub, assume the current | |
7214 | inferior. */ | |
7215 | if (ptid_equal (ptid, null_ptid)) | |
7216 | ptid = inferior_ptid; | |
7217 | ||
5f3563ea | 7218 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7219 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7220 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7221 | { |
799a2abe | 7222 | struct private_thread_info *remote_thr; |
ee154bee | 7223 | |
5f3563ea PA |
7224 | /* Expedited registers. */ |
7225 | if (stop_reply->regcache) | |
7226 | { | |
217f1f79 | 7227 | struct regcache *regcache |
f5656ead | 7228 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
7229 | cached_reg_t *reg; |
7230 | int ix; | |
7231 | ||
7232 | for (ix = 0; | |
d1dff226 | 7233 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7234 | ix++) |
d1dff226 | 7235 | { |
217f1f79 | 7236 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7237 | xfree (reg->data); |
7238 | } | |
7239 | ||
5f3563ea PA |
7240 | VEC_free (cached_reg_t, stop_reply->regcache); |
7241 | } | |
74531fed | 7242 | |
1941c569 | 7243 | remote_notice_new_inferior (ptid, 0); |
85ad3aaf | 7244 | remote_thr = get_private_info_ptid (ptid); |
799a2abe PA |
7245 | remote_thr->core = stop_reply->core; |
7246 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7247 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7248 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7249 | } |
7250 | ||
74531fed PA |
7251 | stop_reply_xfree (stop_reply); |
7252 | return ptid; | |
7253 | } | |
7254 | ||
7255 | /* The non-stop mode version of target_wait. */ | |
7256 | ||
7257 | static ptid_t | |
47608cb1 | 7258 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7259 | { |
7260 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7261 | struct stop_reply *stop_reply; |
7262 | int ret; | |
fee9eda9 | 7263 | int is_notif = 0; |
74531fed PA |
7264 | |
7265 | /* If in non-stop mode, get out of getpkt even if a | |
7266 | notification is received. */ | |
7267 | ||
7268 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7269 | 0 /* forever */, &is_notif); |
74531fed PA |
7270 | while (1) |
7271 | { | |
fee9eda9 | 7272 | if (ret != -1 && !is_notif) |
74531fed PA |
7273 | switch (rs->buf[0]) |
7274 | { | |
7275 | case 'E': /* Error of some sort. */ | |
7276 | /* We're out of sync with the target now. Did it continue | |
7277 | or not? We can't tell which thread it was in non-stop, | |
7278 | so just ignore this. */ | |
7279 | warning (_("Remote failure reply: %s"), rs->buf); | |
7280 | break; | |
7281 | case 'O': /* Console output. */ | |
7282 | remote_console_output (rs->buf + 1); | |
7283 | break; | |
7284 | default: | |
7285 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7286 | break; | |
7287 | } | |
7288 | ||
7289 | /* Acknowledge a pending stop reply that may have arrived in the | |
7290 | mean time. */ | |
f48ff2a7 | 7291 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7292 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7293 | |
7294 | /* If indeed we noticed a stop reply, we're done. */ | |
7295 | stop_reply = queued_stop_reply (ptid); | |
7296 | if (stop_reply != NULL) | |
7297 | return process_stop_reply (stop_reply, status); | |
7298 | ||
47608cb1 | 7299 | /* Still no event. If we're just polling for an event, then |
74531fed | 7300 | return to the event loop. */ |
47608cb1 | 7301 | if (options & TARGET_WNOHANG) |
74531fed PA |
7302 | { |
7303 | status->kind = TARGET_WAITKIND_IGNORE; | |
7304 | return minus_one_ptid; | |
7305 | } | |
7306 | ||
47608cb1 | 7307 | /* Otherwise do a blocking wait. */ |
74531fed | 7308 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7309 | 1 /* forever */, &is_notif); |
74531fed PA |
7310 | } |
7311 | } | |
7312 | ||
7313 | /* Wait until the remote machine stops, then return, storing status in | |
7314 | STATUS just as `wait' would. */ | |
7315 | ||
7316 | static ptid_t | |
47608cb1 | 7317 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7318 | { |
7319 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7320 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7321 | char *buf; |
74531fed PA |
7322 | struct stop_reply *stop_reply; |
7323 | ||
47608cb1 PA |
7324 | again: |
7325 | ||
74531fed PA |
7326 | status->kind = TARGET_WAITKIND_IGNORE; |
7327 | status->value.integer = 0; | |
7328 | ||
7329 | stop_reply = queued_stop_reply (ptid); | |
7330 | if (stop_reply != NULL) | |
7331 | return process_stop_reply (stop_reply, status); | |
7332 | ||
7333 | if (rs->cached_wait_status) | |
7334 | /* Use the cached wait status, but only once. */ | |
7335 | rs->cached_wait_status = 0; | |
7336 | else | |
7337 | { | |
7338 | int ret; | |
722247f1 | 7339 | int is_notif; |
567420d1 PA |
7340 | int forever = ((options & TARGET_WNOHANG) == 0 |
7341 | && wait_forever_enabled_p); | |
7342 | ||
7343 | if (!rs->waiting_for_stop_reply) | |
7344 | { | |
7345 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7346 | return minus_one_ptid; | |
7347 | } | |
74531fed | 7348 | |
74531fed PA |
7349 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7350 | _never_ wait for ever -> test on target_is_async_p(). | |
7351 | However, before we do that we need to ensure that the caller | |
7352 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7353 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7354 | forever, &is_notif); |
722247f1 YQ |
7355 | |
7356 | /* GDB gets a notification. Return to core as this event is | |
7357 | not interesting. */ | |
7358 | if (ret != -1 && is_notif) | |
7359 | return minus_one_ptid; | |
567420d1 PA |
7360 | |
7361 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7362 | return minus_one_ptid; | |
74531fed PA |
7363 | } |
7364 | ||
7365 | buf = rs->buf; | |
7366 | ||
3a29589a DJ |
7367 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7368 | an 'F' or 'O' packet. */ | |
7369 | if (buf[0] != 'F' && buf[0] != 'O') | |
7370 | rs->ctrlc_pending_p = 0; | |
7371 | ||
74531fed PA |
7372 | switch (buf[0]) |
7373 | { | |
7374 | case 'E': /* Error of some sort. */ | |
7375 | /* We're out of sync with the target now. Did it continue or | |
7376 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7377 | rs->waiting_for_stop_reply = 0; |
7378 | ||
74531fed PA |
7379 | warning (_("Remote failure reply: %s"), buf); |
7380 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7381 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7382 | break; |
7383 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7384 | /* GDB may access the inferior memory while handling the File-I/O |
7385 | request, but we don't want GDB accessing memory while waiting | |
7386 | for a stop reply. See the comments in putpkt_binary. Set | |
7387 | waiting_for_stop_reply to 0 temporarily. */ | |
7388 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7389 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7390 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7391 | /* GDB handled the File-I/O request, and the target is running |
7392 | again. Keep waiting for events. */ | |
7393 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7394 | break; |
f2faf941 | 7395 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7396 | { |
29090fb6 LM |
7397 | struct stop_reply *stop_reply; |
7398 | ||
7399 | /* There is a stop reply to handle. */ | |
7400 | rs->waiting_for_stop_reply = 0; | |
7401 | ||
7402 | stop_reply | |
722247f1 YQ |
7403 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7404 | rs->buf); | |
74531fed | 7405 | |
74531fed | 7406 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7407 | break; |
7408 | } | |
7409 | case 'O': /* Console output. */ | |
7410 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7411 | break; |
7412 | case '\0': | |
b73be471 | 7413 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7414 | { |
7415 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7416 | remote system doesn't support it. */ | |
7417 | target_terminal_ours_for_output (); | |
7418 | printf_filtered | |
7419 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7420 | gdb_signal_to_name (rs->last_sent_signal)); |
7421 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
7422 | target_terminal_inferior (); |
7423 | ||
f5c4fcd9 TT |
7424 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7425 | putpkt (buf); | |
c8e38a49 | 7426 | break; |
43ff13b4 | 7427 | } |
c8e38a49 PA |
7428 | /* else fallthrough */ |
7429 | default: | |
7430 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7431 | break; |
43ff13b4 | 7432 | } |
c8e38a49 | 7433 | |
f2faf941 PA |
7434 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7435 | return minus_one_ptid; | |
7436 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7437 | { |
7438 | /* Nothing interesting happened. If we're doing a non-blocking | |
7439 | poll, we're done. Otherwise, go back to waiting. */ | |
7440 | if (options & TARGET_WNOHANG) | |
7441 | return minus_one_ptid; | |
7442 | else | |
7443 | goto again; | |
7444 | } | |
74531fed PA |
7445 | else if (status->kind != TARGET_WAITKIND_EXITED |
7446 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7447 | { |
7448 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7449 | record_currthread (rs, event_ptid); |
82f73884 PA |
7450 | else |
7451 | event_ptid = inferior_ptid; | |
43ff13b4 | 7452 | } |
74531fed PA |
7453 | else |
7454 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7455 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7456 | |
82f73884 | 7457 | return event_ptid; |
43ff13b4 JM |
7458 | } |
7459 | ||
74531fed PA |
7460 | /* Wait until the remote machine stops, then return, storing status in |
7461 | STATUS just as `wait' would. */ | |
7462 | ||
c8e38a49 | 7463 | static ptid_t |
117de6a9 | 7464 | remote_wait (struct target_ops *ops, |
47608cb1 | 7465 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7466 | { |
7467 | ptid_t event_ptid; | |
7468 | ||
6efcd9a8 | 7469 | if (target_is_non_stop_p ()) |
47608cb1 | 7470 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7471 | else |
47608cb1 | 7472 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7473 | |
d9d41e78 | 7474 | if (target_is_async_p ()) |
c8e38a49 | 7475 | { |
74531fed PA |
7476 | /* If there are are events left in the queue tell the event loop |
7477 | to return here. */ | |
722247f1 | 7478 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7479 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7480 | } |
c8e38a49 PA |
7481 | |
7482 | return event_ptid; | |
7483 | } | |
7484 | ||
74ca34ce | 7485 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7486 | |
b96ec7ac | 7487 | static int |
56be3814 | 7488 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7489 | { |
9890e433 | 7490 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
b96ec7ac | 7491 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7492 | char *buf, *p; |
9890e433 | 7493 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7494 | int i; |
7495 | ||
4082afcc | 7496 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7497 | return 0; |
7498 | ||
7499 | if (reg->pnum == -1) | |
7500 | return 0; | |
7501 | ||
2e9f7625 | 7502 | p = rs->buf; |
fcad0fa4 | 7503 | *p++ = 'p'; |
74ca34ce | 7504 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7505 | *p++ = '\0'; |
1f4437a4 MS |
7506 | putpkt (rs->buf); |
7507 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7508 | |
2e9f7625 DJ |
7509 | buf = rs->buf; |
7510 | ||
74ca34ce DJ |
7511 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7512 | { | |
7513 | case PACKET_OK: | |
7514 | break; | |
7515 | case PACKET_UNKNOWN: | |
7516 | return 0; | |
7517 | case PACKET_ERROR: | |
27a9c0bf MS |
7518 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
7519 | gdbarch_register_name (get_regcache_arch (regcache), | |
7520 | reg->regnum), | |
7521 | buf); | |
74ca34ce | 7522 | } |
3f9a994c JB |
7523 | |
7524 | /* If this register is unfetchable, tell the regcache. */ | |
7525 | if (buf[0] == 'x') | |
8480adf2 | 7526 | { |
56be3814 | 7527 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7528 | return 1; |
b96ec7ac | 7529 | } |
b96ec7ac | 7530 | |
3f9a994c JB |
7531 | /* Otherwise, parse and supply the value. */ |
7532 | p = buf; | |
7533 | i = 0; | |
7534 | while (p[0] != 0) | |
7535 | { | |
7536 | if (p[1] == 0) | |
74ca34ce | 7537 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7538 | |
7539 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7540 | p += 2; | |
7541 | } | |
56be3814 | 7542 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7543 | return 1; |
b96ec7ac AC |
7544 | } |
7545 | ||
74ca34ce DJ |
7546 | /* Fetch the registers included in the target's 'g' packet. */ |
7547 | ||
29709017 DJ |
7548 | static int |
7549 | send_g_packet (void) | |
c906108c | 7550 | { |
d01949b6 | 7551 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7552 | int buf_len; |
c906108c | 7553 | |
bba74b36 | 7554 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7555 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7556 | |
29709017 DJ |
7557 | /* We can get out of synch in various cases. If the first character |
7558 | in the buffer is not a hex character, assume that has happened | |
7559 | and try to fetch another packet to read. */ | |
7560 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7561 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7562 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7563 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7564 | { | |
7565 | if (remote_debug) | |
7566 | fprintf_unfiltered (gdb_stdlog, | |
7567 | "Bad register packet; fetching a new packet\n"); | |
7568 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7569 | } | |
7570 | ||
74ca34ce DJ |
7571 | buf_len = strlen (rs->buf); |
7572 | ||
7573 | /* Sanity check the received packet. */ | |
7574 | if (buf_len % 2 != 0) | |
7575 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7576 | |
7577 | return buf_len / 2; | |
7578 | } | |
7579 | ||
7580 | static void | |
56be3814 | 7581 | process_g_packet (struct regcache *regcache) |
29709017 | 7582 | { |
4a22f64d | 7583 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
7584 | struct remote_state *rs = get_remote_state (); |
7585 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
7586 | int i, buf_len; | |
7587 | char *p; | |
7588 | char *regs; | |
7589 | ||
7590 | buf_len = strlen (rs->buf); | |
7591 | ||
7592 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
7593 | if (buf_len > 2 * rsa->sizeof_g_packet) |
7594 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
7595 | ||
7596 | /* Save the size of the packet sent to us by the target. It is used | |
7597 | as a heuristic when determining the max size of packets that the | |
7598 | target can safely receive. */ | |
7599 | if (rsa->actual_register_packet_size == 0) | |
7600 | rsa->actual_register_packet_size = buf_len; | |
7601 | ||
7602 | /* If this is smaller than we guessed the 'g' packet would be, | |
7603 | update our records. A 'g' reply that doesn't include a register's | |
7604 | value implies either that the register is not available, or that | |
7605 | the 'p' packet must be used. */ | |
7606 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7607 | { |
9dc193c3 | 7608 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7609 | |
4a22f64d | 7610 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7611 | { |
9dc193c3 LF |
7612 | long offset = rsa->regs[i].offset; |
7613 | long reg_size = register_size (gdbarch, i); | |
7614 | ||
74ca34ce DJ |
7615 | if (rsa->regs[i].pnum == -1) |
7616 | continue; | |
7617 | ||
9dc193c3 | 7618 | if (offset >= sizeof_g_packet) |
74ca34ce | 7619 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7620 | else if (offset + reg_size > sizeof_g_packet) |
7621 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7622 | else |
74ca34ce | 7623 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7624 | } |
9dc193c3 LF |
7625 | |
7626 | /* Looks valid enough, we can assume this is the correct length | |
7627 | for a 'g' packet. It's important not to adjust | |
7628 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7629 | this "if" won't be run the next time the method is called | |
7630 | with a packet of the same size and one of the internal errors | |
7631 | below will trigger instead. */ | |
7632 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7633 | } |
b323314b | 7634 | |
224c3ddb | 7635 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7636 | |
7637 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7638 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7639 | |
c906108c SS |
7640 | /* Reply describes registers byte by byte, each byte encoded as two |
7641 | hex characters. Suck them all up, then supply them to the | |
7642 | register cacheing/storage mechanism. */ | |
7643 | ||
74ca34ce | 7644 | p = rs->buf; |
ea9c271d | 7645 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7646 | { |
74ca34ce DJ |
7647 | if (p[0] == 0 || p[1] == 0) |
7648 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7649 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7650 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7651 | |
c906108c | 7652 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7653 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7654 | else |
7655 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7656 | p += 2; | |
7657 | } | |
7658 | ||
a744cf53 MS |
7659 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7660 | { | |
7661 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7662 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7663 | |
7664 | if (r->in_g_packet) | |
7665 | { | |
9dc193c3 | 7666 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7667 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7668 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7669 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7670 | else if (rs->buf[r->offset * 2] == 'x') |
7671 | { | |
7672 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7673 | /* The register isn't available, mark it as such (at | |
7674 | the same time setting the value to zero). */ | |
7675 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7676 | } | |
7677 | else | |
7678 | regcache_raw_supply (regcache, r->regnum, | |
7679 | regs + r->offset); | |
7680 | } | |
7681 | } | |
c906108c SS |
7682 | } |
7683 | ||
29709017 | 7684 | static void |
56be3814 | 7685 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7686 | { |
7687 | send_g_packet (); | |
56be3814 | 7688 | process_g_packet (regcache); |
29709017 DJ |
7689 | } |
7690 | ||
e6e4e701 PA |
7691 | /* Make the remote selected traceframe match GDB's selected |
7692 | traceframe. */ | |
7693 | ||
7694 | static void | |
7695 | set_remote_traceframe (void) | |
7696 | { | |
7697 | int newnum; | |
262e1174 | 7698 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7699 | |
262e1174 | 7700 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7701 | return; |
7702 | ||
7703 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7704 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7705 | |
7706 | newnum = target_trace_find (tfind_number, | |
7707 | get_traceframe_number (), 0, 0, NULL); | |
7708 | ||
7709 | /* Should not happen. If it does, all bets are off. */ | |
7710 | if (newnum != get_traceframe_number ()) | |
7711 | warning (_("could not set remote traceframe")); | |
7712 | } | |
7713 | ||
74ca34ce | 7714 | static void |
28439f5e PA |
7715 | remote_fetch_registers (struct target_ops *ops, |
7716 | struct regcache *regcache, int regnum) | |
74ca34ce | 7717 | { |
74ca34ce DJ |
7718 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7719 | int i; | |
7720 | ||
e6e4e701 | 7721 | set_remote_traceframe (); |
bcc0c096 | 7722 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7723 | |
7724 | if (regnum >= 0) | |
7725 | { | |
7726 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7727 | |
74ca34ce DJ |
7728 | gdb_assert (reg != NULL); |
7729 | ||
7730 | /* If this register might be in the 'g' packet, try that first - | |
7731 | we are likely to read more than one register. If this is the | |
7732 | first 'g' packet, we might be overly optimistic about its | |
7733 | contents, so fall back to 'p'. */ | |
7734 | if (reg->in_g_packet) | |
7735 | { | |
56be3814 | 7736 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7737 | if (reg->in_g_packet) |
7738 | return; | |
7739 | } | |
7740 | ||
56be3814 | 7741 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7742 | return; |
7743 | ||
7744 | /* This register is not available. */ | |
56be3814 | 7745 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7746 | |
7747 | return; | |
7748 | } | |
7749 | ||
56be3814 | 7750 | fetch_registers_using_g (regcache); |
74ca34ce | 7751 | |
4a22f64d | 7752 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7753 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7754 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7755 | { |
7756 | /* This register is not available. */ | |
56be3814 | 7757 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7758 | } |
7759 | } | |
7760 | ||
c906108c SS |
7761 | /* Prepare to store registers. Since we may send them all (using a |
7762 | 'G' request), we have to read out the ones we don't want to change | |
7763 | first. */ | |
7764 | ||
c5aa993b | 7765 | static void |
f32dbf8c | 7766 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7767 | { |
ea9c271d | 7768 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 7769 | int i; |
cf0e1e0d | 7770 | |
c906108c | 7771 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7772 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7773 | { |
7774 | case PACKET_DISABLE: | |
7775 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7776 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7777 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7778 | if (rsa->regs[i].in_g_packet) |
8e368124 | 7779 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
7780 | break; |
7781 | case PACKET_ENABLE: | |
7782 | break; | |
7783 | } | |
7784 | } | |
7785 | ||
ad10f812 | 7786 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7787 | packet was not recognized. */ |
5a2468f5 JM |
7788 | |
7789 | static int | |
1f4437a4 MS |
7790 | store_register_using_P (const struct regcache *regcache, |
7791 | struct packet_reg *reg) | |
5a2468f5 | 7792 | { |
4a22f64d | 7793 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7794 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7795 | /* Try storing a single register. */ |
6d820c5c | 7796 | char *buf = rs->buf; |
9890e433 | 7797 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 7798 | char *p; |
5a2468f5 | 7799 | |
4082afcc | 7800 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7801 | return 0; |
7802 | ||
7803 | if (reg->pnum == -1) | |
7804 | return 0; | |
7805 | ||
ea9c271d | 7806 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7807 | p = buf + strlen (buf); |
56be3814 | 7808 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7809 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7810 | putpkt (rs->buf); |
7811 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7812 | |
74ca34ce DJ |
7813 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7814 | { | |
7815 | case PACKET_OK: | |
7816 | return 1; | |
7817 | case PACKET_ERROR: | |
27a9c0bf MS |
7818 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7819 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7820 | case PACKET_UNKNOWN: |
7821 | return 0; | |
7822 | default: | |
7823 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7824 | } | |
c906108c SS |
7825 | } |
7826 | ||
23860348 MS |
7827 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7828 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7829 | |
7830 | static void | |
56be3814 | 7831 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7832 | { |
d01949b6 | 7833 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7834 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7835 | gdb_byte *regs; |
c906108c SS |
7836 | char *p; |
7837 | ||
193cb69f AC |
7838 | /* Extract all the registers in the regcache copying them into a |
7839 | local buffer. */ | |
7840 | { | |
b323314b | 7841 | int i; |
a744cf53 | 7842 | |
224c3ddb | 7843 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7844 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7845 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7846 | { |
ea9c271d | 7847 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7848 | |
b323314b | 7849 | if (r->in_g_packet) |
56be3814 | 7850 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7851 | } |
7852 | } | |
c906108c SS |
7853 | |
7854 | /* Command describes registers byte by byte, | |
7855 | each byte encoded as two hex characters. */ | |
6d820c5c | 7856 | p = rs->buf; |
193cb69f | 7857 | *p++ = 'G'; |
74ca34ce | 7858 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
7859 | putpkt (rs->buf); |
7860 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7861 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7862 | error (_("Could not write registers; remote failure reply '%s'"), |
7863 | rs->buf); | |
c906108c | 7864 | } |
74ca34ce DJ |
7865 | |
7866 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7867 | of the register cache buffer. FIXME: ignores errors. */ | |
7868 | ||
7869 | static void | |
28439f5e PA |
7870 | remote_store_registers (struct target_ops *ops, |
7871 | struct regcache *regcache, int regnum) | |
74ca34ce | 7872 | { |
74ca34ce DJ |
7873 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7874 | int i; | |
7875 | ||
e6e4e701 | 7876 | set_remote_traceframe (); |
bcc0c096 | 7877 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7878 | |
7879 | if (regnum >= 0) | |
7880 | { | |
7881 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7882 | |
74ca34ce DJ |
7883 | gdb_assert (reg != NULL); |
7884 | ||
7885 | /* Always prefer to store registers using the 'P' packet if | |
7886 | possible; we often change only a small number of registers. | |
7887 | Sometimes we change a larger number; we'd need help from a | |
7888 | higher layer to know to use 'G'. */ | |
56be3814 | 7889 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7890 | return; |
7891 | ||
7892 | /* For now, don't complain if we have no way to write the | |
7893 | register. GDB loses track of unavailable registers too | |
7894 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7895 | any way to read the register, either... */ |
74ca34ce DJ |
7896 | if (!reg->in_g_packet) |
7897 | return; | |
7898 | ||
56be3814 | 7899 | store_registers_using_G (regcache); |
74ca34ce DJ |
7900 | return; |
7901 | } | |
7902 | ||
56be3814 | 7903 | store_registers_using_G (regcache); |
74ca34ce | 7904 | |
4a22f64d | 7905 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7906 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7907 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7908 | /* See above for why we do not issue an error here. */ |
7909 | continue; | |
7910 | } | |
c906108c SS |
7911 | \f |
7912 | ||
7913 | /* Return the number of hex digits in num. */ | |
7914 | ||
7915 | static int | |
fba45db2 | 7916 | hexnumlen (ULONGEST num) |
c906108c SS |
7917 | { |
7918 | int i; | |
7919 | ||
7920 | for (i = 0; num != 0; i++) | |
7921 | num >>= 4; | |
7922 | ||
325fac50 | 7923 | return std::max (i, 1); |
c906108c SS |
7924 | } |
7925 | ||
2df3850c | 7926 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7927 | |
7928 | static int | |
fba45db2 | 7929 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7930 | { |
c906108c | 7931 | int len = hexnumlen (num); |
a744cf53 | 7932 | |
2df3850c JM |
7933 | return hexnumnstr (buf, num, len); |
7934 | } | |
7935 | ||
c906108c | 7936 | |
2df3850c | 7937 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7938 | |
2df3850c | 7939 | static int |
fba45db2 | 7940 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7941 | { |
7942 | int i; | |
7943 | ||
7944 | buf[width] = '\0'; | |
7945 | ||
7946 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7947 | { |
c5aa993b | 7948 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7949 | num >>= 4; |
7950 | } | |
7951 | ||
2df3850c | 7952 | return width; |
c906108c SS |
7953 | } |
7954 | ||
23860348 | 7955 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7956 | |
7957 | static CORE_ADDR | |
fba45db2 | 7958 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7959 | { |
883b9c6c | 7960 | unsigned int address_size = remote_address_size; |
a744cf53 | 7961 | |
911c95a5 UW |
7962 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7963 | if (!address_size) | |
f5656ead | 7964 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7965 | |
7966 | if (address_size > 0 | |
7967 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7968 | { |
7969 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7970 | in a ULONGEST variable. */ |
c906108c | 7971 | ULONGEST mask = 1; |
a744cf53 | 7972 | |
911c95a5 | 7973 | mask = (mask << address_size) - 1; |
c906108c SS |
7974 | addr &= mask; |
7975 | } | |
7976 | return addr; | |
7977 | } | |
7978 | ||
7979 | /* Determine whether the remote target supports binary downloading. | |
7980 | This is accomplished by sending a no-op memory write of zero length | |
7981 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7982 | the whole packet, since many stubs strip the eighth bit and |
7983 | subsequently compute a wrong checksum, which causes real havoc with | |
7984 | remote_write_bytes. | |
7a292a7a | 7985 | |
96baa820 | 7986 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7987 | clean. In cases like this, the user should clear "remote |
23860348 | 7988 | X-packet". */ |
96baa820 | 7989 | |
c906108c | 7990 | static void |
fba45db2 | 7991 | check_binary_download (CORE_ADDR addr) |
c906108c | 7992 | { |
d01949b6 | 7993 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7994 | |
4082afcc | 7995 | switch (packet_support (PACKET_X)) |
c906108c | 7996 | { |
96baa820 JM |
7997 | case PACKET_DISABLE: |
7998 | break; | |
7999 | case PACKET_ENABLE: | |
8000 | break; | |
8001 | case PACKET_SUPPORT_UNKNOWN: | |
8002 | { | |
96baa820 | 8003 | char *p; |
802188a7 | 8004 | |
2e9f7625 | 8005 | p = rs->buf; |
96baa820 JM |
8006 | *p++ = 'X'; |
8007 | p += hexnumstr (p, (ULONGEST) addr); | |
8008 | *p++ = ','; | |
8009 | p += hexnumstr (p, (ULONGEST) 0); | |
8010 | *p++ = ':'; | |
8011 | *p = '\0'; | |
802188a7 | 8012 | |
2e9f7625 | 8013 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8014 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8015 | |
2e9f7625 | 8016 | if (rs->buf[0] == '\0') |
96baa820 JM |
8017 | { |
8018 | if (remote_debug) | |
8019 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8020 | "binary downloading NOT " |
8021 | "supported by target\n"); | |
444abaca | 8022 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8023 | } |
8024 | else | |
8025 | { | |
8026 | if (remote_debug) | |
8027 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8028 | "binary downloading supported by target\n"); |
444abaca | 8029 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8030 | } |
8031 | break; | |
8032 | } | |
c906108c SS |
8033 | } |
8034 | } | |
8035 | ||
124e13d9 SM |
8036 | /* Helper function to resize the payload in order to try to get a good |
8037 | alignment. We try to write an amount of data such that the next write will | |
8038 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8039 | ||
8040 | static int | |
8041 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8042 | { | |
8043 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8044 | } | |
8045 | ||
c906108c SS |
8046 | /* Write memory data directly to the remote machine. |
8047 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8048 | HEADER is the starting part of the packet. |
c906108c SS |
8049 | MEMADDR is the address in the remote memory space. |
8050 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8051 | LEN_UNITS is the number of addressable units to write. |
8052 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8053 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8054 | should send data as binary ('X'), or hex-encoded ('M'). | |
8055 | ||
8056 | The function creates packet of the form | |
8057 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8058 | ||
124e13d9 | 8059 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8060 | |
8061 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8062 | are omitted. | |
8063 | ||
9b409511 | 8064 | Return the transferred status, error or OK (an |
124e13d9 SM |
8065 | 'enum target_xfer_status' value). Save the number of addressable units |
8066 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8067 | ||
8068 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8069 | exchange between gdb and the stub could look like (?? in place of the | |
8070 | checksum): | |
8071 | ||
8072 | -> $m1000,4#?? | |
8073 | <- aaaabbbbccccdddd | |
8074 | ||
8075 | -> $M1000,3:eeeeffffeeee#?? | |
8076 | <- OK | |
8077 | ||
8078 | -> $m1000,4#?? | |
8079 | <- eeeeffffeeeedddd */ | |
c906108c | 8080 | |
9b409511 | 8081 | static enum target_xfer_status |
a76d924d | 8082 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8083 | const gdb_byte *myaddr, ULONGEST len_units, |
8084 | int unit_size, ULONGEST *xfered_len_units, | |
8085 | char packet_format, int use_length) | |
c906108c | 8086 | { |
6d820c5c | 8087 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8088 | char *p; |
a76d924d DJ |
8089 | char *plen = NULL; |
8090 | int plenlen = 0; | |
124e13d9 SM |
8091 | int todo_units; |
8092 | int units_written; | |
8093 | int payload_capacity_bytes; | |
8094 | int payload_length_bytes; | |
a76d924d DJ |
8095 | |
8096 | if (packet_format != 'X' && packet_format != 'M') | |
8097 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8098 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8099 | |
124e13d9 | 8100 | if (len_units == 0) |
9b409511 | 8101 | return TARGET_XFER_EOF; |
b2182ed2 | 8102 | |
124e13d9 | 8103 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8104 | |
6d820c5c DJ |
8105 | /* The packet buffer will be large enough for the payload; |
8106 | get_memory_packet_size ensures this. */ | |
a76d924d | 8107 | rs->buf[0] = '\0'; |
c906108c | 8108 | |
a257b5bb | 8109 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8110 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8111 | ||
124e13d9 | 8112 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8113 | if (!use_length) |
0df8b418 | 8114 | /* The comma won't be used. */ |
124e13d9 SM |
8115 | payload_capacity_bytes += 1; |
8116 | payload_capacity_bytes -= strlen (header); | |
8117 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8118 | |
a76d924d | 8119 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8120 | |
a76d924d DJ |
8121 | strcat (rs->buf, header); |
8122 | p = rs->buf + strlen (header); | |
8123 | ||
8124 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8125 | if (packet_format == 'X') | |
c906108c | 8126 | { |
23860348 | 8127 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8128 | todo_units = std::min (len_units, |
8129 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8130 | if (use_length) |
124e13d9 | 8131 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8132 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8133 | } |
8134 | else | |
8135 | { | |
124e13d9 | 8136 | /* Number of bytes that will fit. */ |
325fac50 PA |
8137 | todo_units |
8138 | = std::min (len_units, | |
8139 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8140 | if (use_length) |
124e13d9 | 8141 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8142 | todo_units = std::min (todo_units, |
8143 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8144 | } |
a76d924d | 8145 | |
124e13d9 | 8146 | if (todo_units <= 0) |
3de11b2e | 8147 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8148 | _("minimum packet size too small to write data")); |
802188a7 | 8149 | |
6765f3e5 DJ |
8150 | /* If we already need another packet, then try to align the end |
8151 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8152 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8153 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8154 | |
a257b5bb | 8155 | /* Append "<memaddr>". */ |
917317f4 JM |
8156 | memaddr = remote_address_masked (memaddr); |
8157 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8158 | |
a76d924d DJ |
8159 | if (use_length) |
8160 | { | |
8161 | /* Append ",". */ | |
8162 | *p++ = ','; | |
802188a7 | 8163 | |
124e13d9 SM |
8164 | /* Append the length and retain its location and size. It may need to be |
8165 | adjusted once the packet body has been created. */ | |
a76d924d | 8166 | plen = p; |
124e13d9 | 8167 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8168 | p += plenlen; |
8169 | } | |
a257b5bb AC |
8170 | |
8171 | /* Append ":". */ | |
917317f4 JM |
8172 | *p++ = ':'; |
8173 | *p = '\0'; | |
802188a7 | 8174 | |
a257b5bb | 8175 | /* Append the packet body. */ |
a76d924d | 8176 | if (packet_format == 'X') |
917317f4 | 8177 | { |
917317f4 JM |
8178 | /* Binary mode. Send target system values byte by byte, in |
8179 | increasing byte addresses. Only escape certain critical | |
8180 | characters. */ | |
124e13d9 SM |
8181 | payload_length_bytes = |
8182 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8183 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8184 | |
124e13d9 | 8185 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8186 | a second try to keep the end of the packet aligned. Don't do |
8187 | this if the packet is tiny. */ | |
124e13d9 | 8188 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8189 | { |
124e13d9 SM |
8190 | int new_todo_units; |
8191 | ||
8192 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8193 | ||
8194 | if (new_todo_units != units_written) | |
8195 | payload_length_bytes = | |
8196 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8197 | (gdb_byte *) p, &units_written, | |
8198 | payload_capacity_bytes); | |
6765f3e5 DJ |
8199 | } |
8200 | ||
124e13d9 SM |
8201 | p += payload_length_bytes; |
8202 | if (use_length && units_written < todo_units) | |
c906108c | 8203 | { |
802188a7 | 8204 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8205 | and we have actually sent fewer units than planned. |
917317f4 JM |
8206 | Fix-up the length field of the packet. Use the same |
8207 | number of characters as before. */ | |
124e13d9 SM |
8208 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8209 | plenlen); | |
917317f4 | 8210 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8211 | } |
a76d924d DJ |
8212 | } |
8213 | else | |
8214 | { | |
917317f4 JM |
8215 | /* Normal mode: Send target system values byte by byte, in |
8216 | increasing byte addresses. Each byte is encoded as a two hex | |
8217 | value. */ | |
124e13d9 SM |
8218 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8219 | units_written = todo_units; | |
c906108c | 8220 | } |
802188a7 | 8221 | |
2e9f7625 | 8222 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8223 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8224 | |
2e9f7625 | 8225 | if (rs->buf[0] == 'E') |
00d84524 | 8226 | return TARGET_XFER_E_IO; |
802188a7 | 8227 | |
124e13d9 SM |
8228 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8229 | send fewer units than we'd planned. */ | |
8230 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 8231 | return TARGET_XFER_OK; |
c906108c SS |
8232 | } |
8233 | ||
a76d924d DJ |
8234 | /* Write memory data directly to the remote machine. |
8235 | This does not inform the data cache; the data cache uses this. | |
8236 | MEMADDR is the address in the remote memory space. | |
8237 | MYADDR is the address of the buffer in our space. | |
8238 | LEN is the number of bytes. | |
8239 | ||
9b409511 YQ |
8240 | Return the transferred status, error or OK (an |
8241 | 'enum target_xfer_status' value). Save the number of bytes | |
8242 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8243 | |
9b409511 YQ |
8244 | static enum target_xfer_status |
8245 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8246 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8247 | { |
a121b7c1 | 8248 | const char *packet_format = NULL; |
a76d924d DJ |
8249 | |
8250 | /* Check whether the target supports binary download. */ | |
8251 | check_binary_download (memaddr); | |
8252 | ||
4082afcc | 8253 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8254 | { |
8255 | case PACKET_ENABLE: | |
8256 | packet_format = "X"; | |
8257 | break; | |
8258 | case PACKET_DISABLE: | |
8259 | packet_format = "M"; | |
8260 | break; | |
8261 | case PACKET_SUPPORT_UNKNOWN: | |
8262 | internal_error (__FILE__, __LINE__, | |
8263 | _("remote_write_bytes: bad internal state")); | |
8264 | default: | |
8265 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8266 | } | |
8267 | ||
8268 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8269 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8270 | packet_format[0], 1); |
a76d924d DJ |
8271 | } |
8272 | ||
9217e74e YQ |
8273 | /* Read memory data directly from the remote machine. |
8274 | This does not use the data cache; the data cache uses this. | |
8275 | MEMADDR is the address in the remote memory space. | |
8276 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8277 | LEN_UNITS is the number of addressable memory units to read.. |
8278 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8279 | |
8280 | Return the transferred status, error or OK (an | |
8281 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8282 | transferred in *XFERED_LEN_UNITS. |
8283 | ||
8284 | See the comment of remote_write_bytes_aux for an example of | |
8285 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8286 | |
8287 | static enum target_xfer_status | |
124e13d9 SM |
8288 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8289 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8290 | { |
8291 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8292 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8293 | char *p; |
124e13d9 SM |
8294 | int todo_units; |
8295 | int decoded_bytes; | |
9217e74e | 8296 | |
124e13d9 | 8297 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8298 | /* The packet buffer will be large enough for the payload; |
8299 | get_memory_packet_size ensures this. */ | |
8300 | ||
124e13d9 | 8301 | /* Number of units that will fit. */ |
325fac50 PA |
8302 | todo_units = std::min (len_units, |
8303 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8304 | |
8305 | /* Construct "m"<memaddr>","<len>". */ | |
8306 | memaddr = remote_address_masked (memaddr); | |
8307 | p = rs->buf; | |
8308 | *p++ = 'm'; | |
8309 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8310 | *p++ = ','; | |
124e13d9 | 8311 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8312 | *p = '\0'; |
8313 | putpkt (rs->buf); | |
8314 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8315 | if (rs->buf[0] == 'E' | |
8316 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8317 | && rs->buf[3] == '\0') | |
8318 | return TARGET_XFER_E_IO; | |
8319 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8320 | characters. */ | |
8321 | p = rs->buf; | |
124e13d9 | 8322 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8323 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8324 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
8325 | return TARGET_XFER_OK; |
8326 | } | |
8327 | ||
b55fbac4 YQ |
8328 | /* Using the set of read-only target sections of remote, read live |
8329 | read-only memory. | |
8acf9577 YQ |
8330 | |
8331 | For interface/parameters/return description see target.h, | |
8332 | to_xfer_partial. */ | |
8333 | ||
8334 | static enum target_xfer_status | |
b55fbac4 YQ |
8335 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8336 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8337 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8338 | { |
8339 | struct target_section *secp; | |
8340 | struct target_section_table *table; | |
8341 | ||
8342 | secp = target_section_by_addr (ops, memaddr); | |
8343 | if (secp != NULL | |
8344 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8345 | secp->the_bfd_section) | |
8346 | & SEC_READONLY)) | |
8347 | { | |
8348 | struct target_section *p; | |
8349 | ULONGEST memend = memaddr + len; | |
8350 | ||
8351 | table = target_get_section_table (ops); | |
8352 | ||
8353 | for (p = table->sections; p < table->sections_end; p++) | |
8354 | { | |
8355 | if (memaddr >= p->addr) | |
8356 | { | |
8357 | if (memend <= p->endaddr) | |
8358 | { | |
8359 | /* Entire transfer is within this section. */ | |
124e13d9 | 8360 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8361 | xfered_len); |
8acf9577 YQ |
8362 | } |
8363 | else if (memaddr >= p->endaddr) | |
8364 | { | |
8365 | /* This section ends before the transfer starts. */ | |
8366 | continue; | |
8367 | } | |
8368 | else | |
8369 | { | |
8370 | /* This section overlaps the transfer. Just do half. */ | |
8371 | len = p->endaddr - memaddr; | |
124e13d9 | 8372 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8373 | xfered_len); |
8acf9577 YQ |
8374 | } |
8375 | } | |
8376 | } | |
8377 | } | |
8378 | ||
8379 | return TARGET_XFER_EOF; | |
8380 | } | |
8381 | ||
9217e74e YQ |
8382 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8383 | first if the requested memory is unavailable in traceframe. | |
8384 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8385 | |
9b409511 | 8386 | static enum target_xfer_status |
8acf9577 | 8387 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8388 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8389 | ULONGEST *xfered_len) | |
c906108c | 8390 | { |
6b6aa828 | 8391 | if (len == 0) |
96c4f946 | 8392 | return TARGET_XFER_EOF; |
b2182ed2 | 8393 | |
8acf9577 YQ |
8394 | if (get_traceframe_number () != -1) |
8395 | { | |
8396 | VEC(mem_range_s) *available; | |
8397 | ||
8398 | /* If we fail to get the set of available memory, then the | |
8399 | target does not support querying traceframe info, and so we | |
8400 | attempt reading from the traceframe anyway (assuming the | |
8401 | target implements the old QTro packet then). */ | |
8402 | if (traceframe_available_memory (&available, memaddr, len)) | |
8403 | { | |
8404 | struct cleanup *old_chain; | |
8405 | ||
8406 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
8407 | ||
8408 | if (VEC_empty (mem_range_s, available) | |
8409 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
8410 | { | |
8411 | enum target_xfer_status res; | |
8412 | ||
8413 | /* Don't read into the traceframe's available | |
8414 | memory. */ | |
8415 | if (!VEC_empty (mem_range_s, available)) | |
8416 | { | |
8417 | LONGEST oldlen = len; | |
8418 | ||
8419 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
8420 | gdb_assert (len <= oldlen); | |
8421 | } | |
8422 | ||
8423 | do_cleanups (old_chain); | |
8424 | ||
8425 | /* This goes through the topmost target again. */ | |
b55fbac4 | 8426 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8427 | len, unit_size, xfered_len); |
8acf9577 YQ |
8428 | if (res == TARGET_XFER_OK) |
8429 | return TARGET_XFER_OK; | |
8430 | else | |
8431 | { | |
8432 | /* No use trying further, we know some memory starting | |
8433 | at MEMADDR isn't available. */ | |
8434 | *xfered_len = len; | |
8435 | return TARGET_XFER_UNAVAILABLE; | |
8436 | } | |
8437 | } | |
8438 | ||
8439 | /* Don't try to read more than how much is available, in | |
8440 | case the target implements the deprecated QTro packet to | |
8441 | cater for older GDBs (the target's knowledge of read-only | |
8442 | sections may be outdated by now). */ | |
8443 | len = VEC_index (mem_range_s, available, 0)->length; | |
8444 | ||
8445 | do_cleanups (old_chain); | |
8446 | } | |
8447 | } | |
8448 | ||
124e13d9 | 8449 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8450 | } |
74531fed | 8451 | |
c906108c | 8452 | \f |
c906108c | 8453 | |
a76d924d DJ |
8454 | /* Sends a packet with content determined by the printf format string |
8455 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8456 | whether the packet was a success, a failure, or unknown. */ | |
8457 | ||
77b64a49 PA |
8458 | static enum packet_result remote_send_printf (const char *format, ...) |
8459 | ATTRIBUTE_PRINTF (1, 2); | |
8460 | ||
2c0b251b | 8461 | static enum packet_result |
a76d924d DJ |
8462 | remote_send_printf (const char *format, ...) |
8463 | { | |
8464 | struct remote_state *rs = get_remote_state (); | |
8465 | int max_size = get_remote_packet_size (); | |
a76d924d | 8466 | va_list ap; |
a744cf53 | 8467 | |
a76d924d DJ |
8468 | va_start (ap, format); |
8469 | ||
8470 | rs->buf[0] = '\0'; | |
8471 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8472 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8473 | |
8474 | if (putpkt (rs->buf) < 0) | |
8475 | error (_("Communication problem with target.")); | |
8476 | ||
8477 | rs->buf[0] = '\0'; | |
8478 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8479 | ||
8480 | return packet_check_result (rs->buf); | |
8481 | } | |
8482 | ||
a76d924d DJ |
8483 | /* Flash writing can take quite some time. We'll set |
8484 | effectively infinite timeout for flash operations. | |
8485 | In future, we'll need to decide on a better approach. */ | |
8486 | static const int remote_flash_timeout = 1000; | |
8487 | ||
8488 | static void | |
8489 | remote_flash_erase (struct target_ops *ops, | |
8490 | ULONGEST address, LONGEST length) | |
8491 | { | |
f5656ead | 8492 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8493 | enum packet_result ret; |
2ec845e7 TT |
8494 | scoped_restore restore_timeout |
8495 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8496 | |
8497 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8498 | phex (address, addr_size), |
a76d924d DJ |
8499 | phex (length, 4)); |
8500 | switch (ret) | |
8501 | { | |
8502 | case PACKET_UNKNOWN: | |
8503 | error (_("Remote target does not support flash erase")); | |
8504 | case PACKET_ERROR: | |
8505 | error (_("Error erasing flash with vFlashErase packet")); | |
8506 | default: | |
8507 | break; | |
8508 | } | |
a76d924d DJ |
8509 | } |
8510 | ||
9b409511 YQ |
8511 | static enum target_xfer_status |
8512 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8513 | ULONGEST length, ULONGEST *xfered_len, | |
8514 | const gdb_byte *data) | |
a76d924d | 8515 | { |
2ec845e7 TT |
8516 | scoped_restore restore_timeout |
8517 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8518 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8519 | xfered_len,'X', 0); | |
a76d924d DJ |
8520 | } |
8521 | ||
8522 | static void | |
8523 | remote_flash_done (struct target_ops *ops) | |
8524 | { | |
a76d924d | 8525 | int ret; |
a76d924d | 8526 | |
2ec845e7 TT |
8527 | scoped_restore restore_timeout |
8528 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8529 | ||
a76d924d | 8530 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8531 | |
8532 | switch (ret) | |
8533 | { | |
8534 | case PACKET_UNKNOWN: | |
8535 | error (_("Remote target does not support vFlashDone")); | |
8536 | case PACKET_ERROR: | |
8537 | error (_("Error finishing flash operation")); | |
8538 | default: | |
8539 | break; | |
8540 | } | |
8541 | } | |
8542 | ||
c906108c | 8543 | static void |
fba45db2 | 8544 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8545 | { |
8546 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8547 | } | |
8548 | \f | |
8549 | /* Stuff for dealing with the packets which are part of this protocol. | |
8550 | See comment at top of file for details. */ | |
8551 | ||
1927e618 PA |
8552 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8553 | error to higher layers. Called when a serial error is detected. | |
8554 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8555 | the system error message for errno at function entry and final dot |
8556 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8557 | |
8558 | static void | |
8559 | unpush_and_perror (const char *string) | |
8560 | { | |
d6cb50a2 | 8561 | int saved_errno = errno; |
1927e618 PA |
8562 | |
8563 | remote_unpush_target (); | |
d6cb50a2 JK |
8564 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8565 | safe_strerror (saved_errno)); | |
1927e618 PA |
8566 | } |
8567 | ||
048094ac PA |
8568 | /* Read a single character from the remote end. The current quit |
8569 | handler is overridden to avoid quitting in the middle of packet | |
8570 | sequence, as that would break communication with the remote server. | |
8571 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8572 | |
8573 | static int | |
fba45db2 | 8574 | readchar (int timeout) |
c906108c SS |
8575 | { |
8576 | int ch; | |
5d93a237 | 8577 | struct remote_state *rs = get_remote_state (); |
048094ac | 8578 | |
2ec845e7 TT |
8579 | { |
8580 | scoped_restore restore_quit | |
8581 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8582 | |
2ec845e7 | 8583 | rs->got_ctrlc_during_io = 0; |
c906108c | 8584 | |
2ec845e7 | 8585 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8586 | |
2ec845e7 TT |
8587 | if (rs->got_ctrlc_during_io) |
8588 | set_quit_flag (); | |
8589 | } | |
048094ac | 8590 | |
2acceee2 | 8591 | if (ch >= 0) |
0876f84a | 8592 | return ch; |
2acceee2 JM |
8593 | |
8594 | switch ((enum serial_rc) ch) | |
c906108c SS |
8595 | { |
8596 | case SERIAL_EOF: | |
78a095c3 | 8597 | remote_unpush_target (); |
598d3636 | 8598 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8599 | /* no return */ |
c906108c | 8600 | case SERIAL_ERROR: |
1927e618 PA |
8601 | unpush_and_perror (_("Remote communication error. " |
8602 | "Target disconnected.")); | |
2acceee2 | 8603 | /* no return */ |
c906108c | 8604 | case SERIAL_TIMEOUT: |
2acceee2 | 8605 | break; |
c906108c | 8606 | } |
2acceee2 | 8607 | return ch; |
c906108c SS |
8608 | } |
8609 | ||
c33e31fd | 8610 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8611 | writing fails. The current quit handler is overridden to avoid |
8612 | quitting in the middle of packet sequence, as that would break | |
8613 | communication with the remote server. See | |
8614 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8615 | |
8616 | static void | |
8617 | remote_serial_write (const char *str, int len) | |
8618 | { | |
5d93a237 | 8619 | struct remote_state *rs = get_remote_state (); |
048094ac | 8620 | |
2ec845e7 TT |
8621 | scoped_restore restore_quit |
8622 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8623 | |
8624 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8625 | |
8626 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8627 | { |
1927e618 PA |
8628 | unpush_and_perror (_("Remote communication error. " |
8629 | "Target disconnected.")); | |
c33e31fd | 8630 | } |
048094ac PA |
8631 | |
8632 | if (rs->got_ctrlc_during_io) | |
8633 | set_quit_flag (); | |
c33e31fd PA |
8634 | } |
8635 | ||
6d820c5c DJ |
8636 | /* Send the command in *BUF to the remote machine, and read the reply |
8637 | into *BUF. Report an error if we get an error reply. Resize | |
8638 | *BUF using xrealloc if necessary to hold the result, and update | |
8639 | *SIZEOF_BUF. */ | |
c906108c SS |
8640 | |
8641 | static void | |
6d820c5c DJ |
8642 | remote_send (char **buf, |
8643 | long *sizeof_buf) | |
c906108c | 8644 | { |
6d820c5c | 8645 | putpkt (*buf); |
c2d11a7d | 8646 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8647 | |
6d820c5c DJ |
8648 | if ((*buf)[0] == 'E') |
8649 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8650 | } |
8651 | ||
b3ced9ba PA |
8652 | /* Return a string representing an escaped version of BUF, of len N. |
8653 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8654 | |
b3ced9ba | 8655 | static std::string |
6e5abd65 PA |
8656 | escape_buffer (const char *buf, int n) |
8657 | { | |
d7e74731 | 8658 | string_file stb; |
6e5abd65 | 8659 | |
d7e74731 PA |
8660 | stb.putstrn (buf, n, '\\'); |
8661 | return std::move (stb.string ()); | |
6e5abd65 PA |
8662 | } |
8663 | ||
c906108c SS |
8664 | /* Display a null-terminated packet on stdout, for debugging, using C |
8665 | string notation. */ | |
8666 | ||
8667 | static void | |
baa336ce | 8668 | print_packet (const char *buf) |
c906108c SS |
8669 | { |
8670 | puts_filtered ("\""); | |
43e526b9 | 8671 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8672 | puts_filtered ("\""); |
8673 | } | |
8674 | ||
8675 | int | |
baa336ce | 8676 | putpkt (const char *buf) |
c906108c SS |
8677 | { |
8678 | return putpkt_binary (buf, strlen (buf)); | |
8679 | } | |
8680 | ||
8681 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8682 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8683 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8684 | and for a possible /0 if we are debugging (remote_debug) and want |
8685 | to print the sent packet as a string. */ | |
c906108c SS |
8686 | |
8687 | static int | |
baa336ce | 8688 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8689 | { |
2d717e4f | 8690 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8691 | int i; |
8692 | unsigned char csum = 0; | |
224c3ddb | 8693 | char *buf2 = (char *) xmalloc (cnt + 6); |
a5c0808e | 8694 | struct cleanup *old_chain = make_cleanup (xfree, buf2); |
085dd6e6 | 8695 | |
c906108c SS |
8696 | int ch; |
8697 | int tcount = 0; | |
8698 | char *p; | |
8699 | ||
e24a49d8 PA |
8700 | /* Catch cases like trying to read memory or listing threads while |
8701 | we're waiting for a stop reply. The remote server wouldn't be | |
8702 | ready to handle this request, so we'd hang and timeout. We don't | |
8703 | have to worry about this in synchronous mode, because in that | |
8704 | case it's not possible to issue a command while the target is | |
74531fed PA |
8705 | running. This is not a problem in non-stop mode, because in that |
8706 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8707 | if (!target_is_non_stop_p () |
8708 | && target_is_async_p () | |
8709 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8710 | { |
8711 | error (_("Cannot execute this command while the target is running.\n" | |
8712 | "Use the \"interrupt\" command to stop the target\n" | |
8713 | "and then try again.")); | |
8714 | } | |
e24a49d8 | 8715 | |
2d717e4f DJ |
8716 | /* We're sending out a new packet. Make sure we don't look at a |
8717 | stale cached response. */ | |
8718 | rs->cached_wait_status = 0; | |
8719 | ||
c906108c SS |
8720 | /* Copy the packet into buffer BUF2, encapsulating it |
8721 | and giving it a checksum. */ | |
8722 | ||
c906108c SS |
8723 | p = buf2; |
8724 | *p++ = '$'; | |
8725 | ||
8726 | for (i = 0; i < cnt; i++) | |
8727 | { | |
8728 | csum += buf[i]; | |
8729 | *p++ = buf[i]; | |
8730 | } | |
8731 | *p++ = '#'; | |
8732 | *p++ = tohex ((csum >> 4) & 0xf); | |
8733 | *p++ = tohex (csum & 0xf); | |
8734 | ||
8735 | /* Send it over and over until we get a positive ack. */ | |
8736 | ||
8737 | while (1) | |
8738 | { | |
8739 | int started_error_output = 0; | |
8740 | ||
8741 | if (remote_debug) | |
8742 | { | |
8743 | *p = '\0'; | |
b3ced9ba | 8744 | |
6f8976bf YQ |
8745 | int len = (int) (p - buf2); |
8746 | ||
8747 | std::string str | |
8748 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
8749 | ||
8750 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
8751 | ||
8752 | if (str.length () > REMOTE_DEBUG_MAX_CHAR) | |
8753 | { | |
8754 | fprintf_unfiltered (gdb_stdlog, "[%zu bytes omitted]", | |
8755 | str.length () - REMOTE_DEBUG_MAX_CHAR); | |
8756 | } | |
8757 | ||
8758 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 8759 | |
0f71a2f6 | 8760 | gdb_flush (gdb_stdlog); |
c906108c | 8761 | } |
c33e31fd | 8762 | remote_serial_write (buf2, p - buf2); |
c906108c | 8763 | |
a6f3e723 SL |
8764 | /* If this is a no acks version of the remote protocol, send the |
8765 | packet and move on. */ | |
8766 | if (rs->noack_mode) | |
8767 | break; | |
8768 | ||
74531fed PA |
8769 | /* Read until either a timeout occurs (-2) or '+' is read. |
8770 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8771 | while (1) |
8772 | { | |
8773 | ch = readchar (remote_timeout); | |
8774 | ||
c5aa993b | 8775 | if (remote_debug) |
c906108c SS |
8776 | { |
8777 | switch (ch) | |
8778 | { | |
8779 | case '+': | |
1216fa2c | 8780 | case '-': |
c906108c SS |
8781 | case SERIAL_TIMEOUT: |
8782 | case '$': | |
74531fed | 8783 | case '%': |
c906108c SS |
8784 | if (started_error_output) |
8785 | { | |
8786 | putchar_unfiltered ('\n'); | |
8787 | started_error_output = 0; | |
8788 | } | |
8789 | } | |
8790 | } | |
8791 | ||
8792 | switch (ch) | |
8793 | { | |
8794 | case '+': | |
8795 | if (remote_debug) | |
0f71a2f6 | 8796 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 8797 | do_cleanups (old_chain); |
c906108c | 8798 | return 1; |
1216fa2c AC |
8799 | case '-': |
8800 | if (remote_debug) | |
8801 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8802 | /* FALLTHROUGH */ |
c906108c | 8803 | case SERIAL_TIMEOUT: |
c5aa993b | 8804 | tcount++; |
c906108c | 8805 | if (tcount > 3) |
a5c0808e PA |
8806 | { |
8807 | do_cleanups (old_chain); | |
8808 | return 0; | |
8809 | } | |
23860348 | 8810 | break; /* Retransmit buffer. */ |
c906108c SS |
8811 | case '$': |
8812 | { | |
40e3f985 | 8813 | if (remote_debug) |
2bc416ba | 8814 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8815 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8816 | /* It's probably an old response sent because an ACK |
8817 | was lost. Gobble up the packet and ack it so it | |
8818 | doesn't get retransmitted when we resend this | |
8819 | packet. */ | |
6d820c5c | 8820 | skip_frame (); |
c33e31fd | 8821 | remote_serial_write ("+", 1); |
23860348 | 8822 | continue; /* Now, go look for +. */ |
c906108c | 8823 | } |
74531fed PA |
8824 | |
8825 | case '%': | |
8826 | { | |
8827 | int val; | |
8828 | ||
8829 | /* If we got a notification, handle it, and go back to looking | |
8830 | for an ack. */ | |
8831 | /* We've found the start of a notification. Now | |
8832 | collect the data. */ | |
8833 | val = read_frame (&rs->buf, &rs->buf_size); | |
8834 | if (val >= 0) | |
8835 | { | |
8836 | if (remote_debug) | |
8837 | { | |
b3ced9ba | 8838 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 8839 | |
6e5abd65 PA |
8840 | fprintf_unfiltered (gdb_stdlog, |
8841 | " Notification received: %s\n", | |
b3ced9ba | 8842 | str.c_str ()); |
74531fed | 8843 | } |
5965e028 | 8844 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8845 | /* We're in sync now, rewait for the ack. */ |
8846 | tcount = 0; | |
8847 | } | |
8848 | else | |
8849 | { | |
8850 | if (remote_debug) | |
8851 | { | |
8852 | if (!started_error_output) | |
8853 | { | |
8854 | started_error_output = 1; | |
8855 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8856 | } | |
8857 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8858 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8859 | } | |
8860 | } | |
8861 | continue; | |
8862 | } | |
8863 | /* fall-through */ | |
c906108c SS |
8864 | default: |
8865 | if (remote_debug) | |
8866 | { | |
8867 | if (!started_error_output) | |
8868 | { | |
8869 | started_error_output = 1; | |
0f71a2f6 | 8870 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8871 | } |
0f71a2f6 | 8872 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8873 | } |
8874 | continue; | |
8875 | } | |
23860348 | 8876 | break; /* Here to retransmit. */ |
c906108c SS |
8877 | } |
8878 | ||
8879 | #if 0 | |
8880 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8881 | able to get out next time we call QUIT, without anything as |
8882 | violent as interrupt_query. If we want to provide a way out of | |
8883 | here without getting to the next QUIT, it should be based on | |
8884 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8885 | if (quit_flag) |
8886 | { | |
8887 | quit_flag = 0; | |
8888 | interrupt_query (); | |
8889 | } | |
8890 | #endif | |
8891 | } | |
a5c0808e PA |
8892 | |
8893 | do_cleanups (old_chain); | |
a6f3e723 | 8894 | return 0; |
c906108c SS |
8895 | } |
8896 | ||
6d820c5c DJ |
8897 | /* Come here after finding the start of a frame when we expected an |
8898 | ack. Do our best to discard the rest of this packet. */ | |
8899 | ||
8900 | static void | |
8901 | skip_frame (void) | |
8902 | { | |
8903 | int c; | |
8904 | ||
8905 | while (1) | |
8906 | { | |
8907 | c = readchar (remote_timeout); | |
8908 | switch (c) | |
8909 | { | |
8910 | case SERIAL_TIMEOUT: | |
8911 | /* Nothing we can do. */ | |
8912 | return; | |
8913 | case '#': | |
8914 | /* Discard the two bytes of checksum and stop. */ | |
8915 | c = readchar (remote_timeout); | |
8916 | if (c >= 0) | |
8917 | c = readchar (remote_timeout); | |
8918 | ||
8919 | return; | |
8920 | case '*': /* Run length encoding. */ | |
8921 | /* Discard the repeat count. */ | |
8922 | c = readchar (remote_timeout); | |
8923 | if (c < 0) | |
8924 | return; | |
8925 | break; | |
8926 | default: | |
8927 | /* A regular character. */ | |
8928 | break; | |
8929 | } | |
8930 | } | |
8931 | } | |
8932 | ||
c906108c | 8933 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8934 | into *BUF, verifying the checksum, length, and handling run-length |
8935 | compression. NUL terminate the buffer. If there is not enough room, | |
8936 | expand *BUF using xrealloc. | |
c906108c | 8937 | |
c2d11a7d JM |
8938 | Returns -1 on error, number of characters in buffer (ignoring the |
8939 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8940 | SERIAL status indications). */ |
c2d11a7d JM |
8941 | |
8942 | static long | |
6d820c5c DJ |
8943 | read_frame (char **buf_p, |
8944 | long *sizeof_buf) | |
c906108c SS |
8945 | { |
8946 | unsigned char csum; | |
c2d11a7d | 8947 | long bc; |
c906108c | 8948 | int c; |
6d820c5c | 8949 | char *buf = *buf_p; |
a6f3e723 | 8950 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8951 | |
8952 | csum = 0; | |
c2d11a7d | 8953 | bc = 0; |
c906108c SS |
8954 | |
8955 | while (1) | |
8956 | { | |
8957 | c = readchar (remote_timeout); | |
c906108c SS |
8958 | switch (c) |
8959 | { | |
8960 | case SERIAL_TIMEOUT: | |
8961 | if (remote_debug) | |
0f71a2f6 | 8962 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8963 | return -1; |
c906108c SS |
8964 | case '$': |
8965 | if (remote_debug) | |
0f71a2f6 JM |
8966 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8967 | gdb_stdlog); | |
23860348 | 8968 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8969 | case '#': |
8970 | { | |
8971 | unsigned char pktcsum; | |
e1b09194 AC |
8972 | int check_0 = 0; |
8973 | int check_1 = 0; | |
c906108c | 8974 | |
c2d11a7d | 8975 | buf[bc] = '\0'; |
c906108c | 8976 | |
e1b09194 AC |
8977 | check_0 = readchar (remote_timeout); |
8978 | if (check_0 >= 0) | |
8979 | check_1 = readchar (remote_timeout); | |
802188a7 | 8980 | |
e1b09194 AC |
8981 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8982 | { | |
8983 | if (remote_debug) | |
2bc416ba | 8984 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8985 | gdb_stdlog); |
e1b09194 AC |
8986 | return -1; |
8987 | } | |
8988 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8989 | { |
8990 | if (remote_debug) | |
2bc416ba | 8991 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8992 | gdb_stdlog); |
40e3f985 FN |
8993 | return -1; |
8994 | } | |
c906108c | 8995 | |
a6f3e723 SL |
8996 | /* Don't recompute the checksum; with no ack packets we |
8997 | don't have any way to indicate a packet retransmission | |
8998 | is necessary. */ | |
8999 | if (rs->noack_mode) | |
9000 | return bc; | |
9001 | ||
e1b09194 | 9002 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9003 | if (csum == pktcsum) |
c2d11a7d | 9004 | return bc; |
c906108c | 9005 | |
c5aa993b | 9006 | if (remote_debug) |
c906108c | 9007 | { |
b3ced9ba | 9008 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9009 | |
6e5abd65 | 9010 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9011 | "Bad checksum, sentsum=0x%x, " |
9012 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9013 | pktcsum, csum, str.c_str ()); |
c906108c | 9014 | } |
c2d11a7d | 9015 | /* Number of characters in buffer ignoring trailing |
23860348 | 9016 | NULL. */ |
c2d11a7d | 9017 | return -1; |
c906108c | 9018 | } |
23860348 | 9019 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9020 | { |
9021 | int repeat; | |
c906108c | 9022 | |
a744cf53 | 9023 | csum += c; |
b4501125 AC |
9024 | c = readchar (remote_timeout); |
9025 | csum += c; | |
23860348 | 9026 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9027 | |
23860348 | 9028 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9029 | |
6d820c5c | 9030 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9031 | { |
6d820c5c DJ |
9032 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
9033 | { | |
9034 | /* Make some more room in the buffer. */ | |
9035 | *sizeof_buf += repeat; | |
224c3ddb | 9036 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9037 | buf = *buf_p; |
9038 | } | |
9039 | ||
c2d11a7d JM |
9040 | memset (&buf[bc], buf[bc - 1], repeat); |
9041 | bc += repeat; | |
c2c6d25f JM |
9042 | continue; |
9043 | } | |
9044 | ||
c2d11a7d | 9045 | buf[bc] = '\0'; |
6d820c5c | 9046 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9047 | return -1; |
c2c6d25f | 9048 | } |
c906108c | 9049 | default: |
6d820c5c | 9050 | if (bc >= *sizeof_buf - 1) |
c906108c | 9051 | { |
6d820c5c DJ |
9052 | /* Make some more room in the buffer. */ |
9053 | *sizeof_buf *= 2; | |
224c3ddb | 9054 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9055 | buf = *buf_p; |
c906108c SS |
9056 | } |
9057 | ||
6d820c5c DJ |
9058 | buf[bc++] = c; |
9059 | csum += c; | |
9060 | continue; | |
c906108c SS |
9061 | } |
9062 | } | |
9063 | } | |
9064 | ||
9065 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9066 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9067 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9068 | rather than timing out; this is used (in synchronous mode) to wait | |
9069 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9070 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9071 | don't have to change all the calls to getpkt to deal with the | |
9072 | return value, because at the moment I don't know what the right | |
23860348 | 9073 | thing to do it for those. */ |
c906108c | 9074 | void |
6d820c5c DJ |
9075 | getpkt (char **buf, |
9076 | long *sizeof_buf, | |
c2d11a7d | 9077 | int forever) |
d9fcf2fb | 9078 | { |
54887903 | 9079 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9080 | } |
9081 | ||
9082 | ||
9083 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9084 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9085 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9086 | rather than timing out; this is used (in synchronous mode) to wait | |
9087 | for a target that is is executing user code to stop. If FOREVER == | |
9088 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9089 | indication of this to the caller. Otherwise return the number of |
9090 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9091 | enough reason to return to the caller. *IS_NOTIF is an output |
9092 | boolean that indicates whether *BUF holds a notification or not | |
9093 | (a regular packet). */ | |
74531fed | 9094 | |
3172dc30 | 9095 | static int |
74531fed | 9096 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9097 | int expecting_notif, int *is_notif) |
c906108c | 9098 | { |
2d717e4f | 9099 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9100 | int c; |
9101 | int tries; | |
9102 | int timeout; | |
df4b58fe | 9103 | int val = -1; |
c906108c | 9104 | |
2d717e4f DJ |
9105 | /* We're reading a new response. Make sure we don't look at a |
9106 | previously cached response. */ | |
9107 | rs->cached_wait_status = 0; | |
9108 | ||
6d820c5c | 9109 | strcpy (*buf, "timeout"); |
c906108c SS |
9110 | |
9111 | if (forever) | |
74531fed PA |
9112 | timeout = watchdog > 0 ? watchdog : -1; |
9113 | else if (expecting_notif) | |
9114 | timeout = 0; /* There should already be a char in the buffer. If | |
9115 | not, bail out. */ | |
c906108c SS |
9116 | else |
9117 | timeout = remote_timeout; | |
9118 | ||
9119 | #define MAX_TRIES 3 | |
9120 | ||
74531fed PA |
9121 | /* Process any number of notifications, and then return when |
9122 | we get a packet. */ | |
9123 | for (;;) | |
c906108c | 9124 | { |
d9c43928 | 9125 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9126 | times. */ |
9127 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9128 | { |
74531fed PA |
9129 | /* This can loop forever if the remote side sends us |
9130 | characters continuously, but if it pauses, we'll get | |
9131 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9132 | we'll count that as a retry. | |
9133 | ||
9134 | Note that even when forever is set, we will only wait | |
9135 | forever prior to the start of a packet. After that, we | |
9136 | expect characters to arrive at a brisk pace. They should | |
9137 | show up within remote_timeout intervals. */ | |
9138 | do | |
9139 | c = readchar (timeout); | |
9140 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9141 | |
9142 | if (c == SERIAL_TIMEOUT) | |
9143 | { | |
74531fed PA |
9144 | if (expecting_notif) |
9145 | return -1; /* Don't complain, it's normal to not get | |
9146 | anything in this case. */ | |
9147 | ||
23860348 | 9148 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9149 | { |
78a095c3 | 9150 | remote_unpush_target (); |
598d3636 JK |
9151 | throw_error (TARGET_CLOSE_ERROR, |
9152 | _("Watchdog timeout has expired. " | |
9153 | "Target detached.")); | |
c906108c | 9154 | } |
c906108c | 9155 | if (remote_debug) |
0f71a2f6 | 9156 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9157 | } |
74531fed PA |
9158 | else |
9159 | { | |
9160 | /* We've found the start of a packet or notification. | |
9161 | Now collect the data. */ | |
9162 | val = read_frame (buf, sizeof_buf); | |
9163 | if (val >= 0) | |
9164 | break; | |
9165 | } | |
9166 | ||
c33e31fd | 9167 | remote_serial_write ("-", 1); |
c906108c | 9168 | } |
c906108c | 9169 | |
74531fed PA |
9170 | if (tries > MAX_TRIES) |
9171 | { | |
9172 | /* We have tried hard enough, and just can't receive the | |
9173 | packet/notification. Give up. */ | |
9174 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9175 | |
74531fed PA |
9176 | /* Skip the ack char if we're in no-ack mode. */ |
9177 | if (!rs->noack_mode) | |
c33e31fd | 9178 | remote_serial_write ("+", 1); |
74531fed PA |
9179 | return -1; |
9180 | } | |
c906108c | 9181 | |
74531fed PA |
9182 | /* If we got an ordinary packet, return that to our caller. */ |
9183 | if (c == '$') | |
c906108c SS |
9184 | { |
9185 | if (remote_debug) | |
43e526b9 | 9186 | { |
6f8976bf YQ |
9187 | std::string str |
9188 | = escape_buffer (*buf, | |
9189 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9190 | ||
9191 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9192 | str.c_str ()); | |
9193 | ||
9194 | if (str.length () > REMOTE_DEBUG_MAX_CHAR) | |
9195 | { | |
9196 | fprintf_unfiltered (gdb_stdlog, "[%zu bytes omitted]", | |
9197 | str.length () - REMOTE_DEBUG_MAX_CHAR); | |
9198 | } | |
6e5abd65 | 9199 | |
6f8976bf | 9200 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9201 | } |
a6f3e723 SL |
9202 | |
9203 | /* Skip the ack char if we're in no-ack mode. */ | |
9204 | if (!rs->noack_mode) | |
c33e31fd | 9205 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9206 | if (is_notif != NULL) |
9207 | *is_notif = 0; | |
0876f84a | 9208 | return val; |
c906108c SS |
9209 | } |
9210 | ||
74531fed PA |
9211 | /* If we got a notification, handle it, and go back to looking |
9212 | for a packet. */ | |
9213 | else | |
9214 | { | |
9215 | gdb_assert (c == '%'); | |
9216 | ||
9217 | if (remote_debug) | |
9218 | { | |
b3ced9ba | 9219 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9220 | |
6e5abd65 PA |
9221 | fprintf_unfiltered (gdb_stdlog, |
9222 | " Notification received: %s\n", | |
b3ced9ba | 9223 | str.c_str ()); |
74531fed | 9224 | } |
fee9eda9 YQ |
9225 | if (is_notif != NULL) |
9226 | *is_notif = 1; | |
c906108c | 9227 | |
5965e028 | 9228 | handle_notification (rs->notif_state, *buf); |
c906108c | 9229 | |
74531fed | 9230 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9231 | |
74531fed | 9232 | if (expecting_notif) |
fee9eda9 | 9233 | return val; |
74531fed PA |
9234 | } |
9235 | } | |
9236 | } | |
9237 | ||
9238 | static int | |
9239 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9240 | { | |
fee9eda9 | 9241 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9242 | } |
9243 | ||
9244 | static int | |
fee9eda9 YQ |
9245 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9246 | int *is_notif) | |
74531fed | 9247 | { |
fee9eda9 YQ |
9248 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9249 | is_notif); | |
c906108c | 9250 | } |
74531fed | 9251 | |
cbb8991c DB |
9252 | /* Check whether EVENT is a fork event for the process specified |
9253 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9254 | ||
9255 | static int | |
9256 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9257 | QUEUE_ITER (stop_reply_p) *iter, | |
9258 | stop_reply_p event, | |
9259 | void *data) | |
9260 | { | |
19ba03f4 | 9261 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9262 | int parent_pid = *(int *) param->input; |
9263 | ||
9264 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9265 | { | |
9266 | struct remote_state *rs = get_remote_state (); | |
9267 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9268 | int res; | |
9269 | ||
9270 | res = remote_vkill (child_pid, rs); | |
9271 | if (res != 0) | |
9272 | error (_("Can't kill fork child process %d"), child_pid); | |
9273 | } | |
9274 | ||
9275 | return 1; | |
9276 | } | |
9277 | ||
9278 | /* Kill any new fork children of process PID that haven't been | |
9279 | processed by follow_fork. */ | |
9280 | ||
9281 | static void | |
9282 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9283 | { | |
9284 | struct thread_info *thread; | |
9285 | struct notif_client *notif = ¬if_client_stop; | |
9286 | struct queue_iter_param param; | |
9287 | ||
9288 | /* Kill the fork child threads of any threads in process PID | |
9289 | that are stopped at a fork event. */ | |
9290 | ALL_NON_EXITED_THREADS (thread) | |
9291 | { | |
9292 | struct target_waitstatus *ws = &thread->pending_follow; | |
9293 | ||
9294 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9295 | { | |
9296 | struct remote_state *rs = get_remote_state (); | |
9297 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9298 | int res; | |
9299 | ||
9300 | res = remote_vkill (child_pid, rs); | |
9301 | if (res != 0) | |
9302 | error (_("Can't kill fork child process %d"), child_pid); | |
9303 | } | |
9304 | } | |
9305 | ||
9306 | /* Check for any pending fork events (not reported or processed yet) | |
9307 | in process PID and kill those fork child threads as well. */ | |
9308 | remote_notif_get_pending_events (notif); | |
9309 | param.input = &pid; | |
9310 | param.output = NULL; | |
9311 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9312 | kill_child_of_pending_fork, ¶m); | |
9313 | } | |
9314 | ||
c906108c | 9315 | \f |
8020350c DB |
9316 | /* Target hook to kill the current inferior. */ |
9317 | ||
c906108c | 9318 | static void |
7d85a9c0 | 9319 | remote_kill (struct target_ops *ops) |
43ff13b4 | 9320 | { |
8020350c DB |
9321 | int res = -1; |
9322 | int pid = ptid_get_pid (inferior_ptid); | |
9323 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9324 | |
8020350c | 9325 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9326 | { |
8020350c DB |
9327 | /* If we're stopped while forking and we haven't followed yet, |
9328 | kill the child task. We need to do this before killing the | |
9329 | parent task because if this is a vfork then the parent will | |
9330 | be sleeping. */ | |
9331 | kill_new_fork_children (pid, rs); | |
9332 | ||
9333 | res = remote_vkill (pid, rs); | |
9334 | if (res == 0) | |
0fdf84ca | 9335 | { |
bc1e6c81 | 9336 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9337 | return; |
9338 | } | |
8020350c | 9339 | } |
0fdf84ca | 9340 | |
8020350c DB |
9341 | /* If we are in 'target remote' mode and we are killing the only |
9342 | inferior, then we will tell gdbserver to exit and unpush the | |
9343 | target. */ | |
9344 | if (res == -1 && !remote_multi_process_p (rs) | |
9345 | && number_of_live_inferiors () == 1) | |
9346 | { | |
9347 | remote_kill_k (); | |
9348 | ||
9349 | /* We've killed the remote end, we get to mourn it. If we are | |
9350 | not in extended mode, mourning the inferior also unpushes | |
9351 | remote_ops from the target stack, which closes the remote | |
9352 | connection. */ | |
bc1e6c81 | 9353 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9354 | |
9355 | return; | |
0fdf84ca | 9356 | } |
43ff13b4 | 9357 | |
8020350c | 9358 | error (_("Can't kill process")); |
43ff13b4 JM |
9359 | } |
9360 | ||
8020350c DB |
9361 | /* Send a kill request to the target using the 'vKill' packet. */ |
9362 | ||
82f73884 PA |
9363 | static int |
9364 | remote_vkill (int pid, struct remote_state *rs) | |
9365 | { | |
4082afcc | 9366 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9367 | return -1; |
9368 | ||
9369 | /* Tell the remote target to detach. */ | |
bba74b36 | 9370 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9371 | putpkt (rs->buf); |
9372 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9373 | ||
4082afcc PA |
9374 | switch (packet_ok (rs->buf, |
9375 | &remote_protocol_packets[PACKET_vKill])) | |
9376 | { | |
9377 | case PACKET_OK: | |
9378 | return 0; | |
9379 | case PACKET_ERROR: | |
9380 | return 1; | |
9381 | case PACKET_UNKNOWN: | |
9382 | return -1; | |
9383 | default: | |
9384 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9385 | } | |
82f73884 PA |
9386 | } |
9387 | ||
8020350c DB |
9388 | /* Send a kill request to the target using the 'k' packet. */ |
9389 | ||
82f73884 | 9390 | static void |
8020350c | 9391 | remote_kill_k (void) |
82f73884 | 9392 | { |
8020350c DB |
9393 | /* Catch errors so the user can quit from gdb even when we |
9394 | aren't on speaking terms with the remote system. */ | |
9395 | TRY | |
82f73884 | 9396 | { |
82f73884 | 9397 | putpkt ("k"); |
82f73884 | 9398 | } |
8020350c DB |
9399 | CATCH (ex, RETURN_MASK_ERROR) |
9400 | { | |
9401 | if (ex.error == TARGET_CLOSE_ERROR) | |
9402 | { | |
9403 | /* If we got an (EOF) error that caused the target | |
9404 | to go away, then we're done, that's what we wanted. | |
9405 | "k" is susceptible to cause a premature EOF, given | |
9406 | that the remote server isn't actually required to | |
9407 | reply to "k", and it can happen that it doesn't | |
9408 | even get to reply ACK to the "k". */ | |
9409 | return; | |
9410 | } | |
82f73884 | 9411 | |
8020350c DB |
9412 | /* Otherwise, something went wrong. We didn't actually kill |
9413 | the target. Just propagate the exception, and let the | |
9414 | user or higher layers decide what to do. */ | |
9415 | throw_exception (ex); | |
9416 | } | |
9417 | END_CATCH | |
82f73884 PA |
9418 | } |
9419 | ||
c906108c | 9420 | static void |
20f796c9 | 9421 | remote_mourn (struct target_ops *target) |
c906108c | 9422 | { |
8020350c | 9423 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9424 | |
8020350c DB |
9425 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9426 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9427 | { | |
9428 | unpush_target (target); | |
c906108c | 9429 | |
8020350c DB |
9430 | /* remote_close takes care of doing most of the clean up. */ |
9431 | generic_mourn_inferior (); | |
9432 | return; | |
9433 | } | |
c906108c | 9434 | |
e24a49d8 PA |
9435 | /* In case we got here due to an error, but we're going to stay |
9436 | connected. */ | |
9437 | rs->waiting_for_stop_reply = 0; | |
9438 | ||
dc1981d7 PA |
9439 | /* If the current general thread belonged to the process we just |
9440 | detached from or has exited, the remote side current general | |
9441 | thread becomes undefined. Considering a case like this: | |
9442 | ||
9443 | - We just got here due to a detach. | |
9444 | - The process that we're detaching from happens to immediately | |
9445 | report a global breakpoint being hit in non-stop mode, in the | |
9446 | same thread we had selected before. | |
9447 | - GDB attaches to this process again. | |
9448 | - This event happens to be the next event we handle. | |
9449 | ||
9450 | GDB would consider that the current general thread didn't need to | |
9451 | be set on the stub side (with Hg), since for all it knew, | |
9452 | GENERAL_THREAD hadn't changed. | |
9453 | ||
9454 | Notice that although in all-stop mode, the remote server always | |
9455 | sets the current thread to the thread reporting the stop event, | |
9456 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9457 | not* change the current thread when reporting a breakpoint hit, | |
9458 | due to the decoupling of event reporting and event handling. | |
9459 | ||
9460 | To keep things simple, we always invalidate our notion of the | |
9461 | current thread. */ | |
47f8a51d | 9462 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9463 | |
8020350c | 9464 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9465 | generic_mourn_inferior (); |
9466 | ||
d729566a | 9467 | if (!have_inferiors ()) |
2d717e4f | 9468 | { |
82f73884 PA |
9469 | if (!remote_multi_process_p (rs)) |
9470 | { | |
9471 | /* Check whether the target is running now - some remote stubs | |
9472 | automatically restart after kill. */ | |
9473 | putpkt ("?"); | |
9474 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9475 | ||
9476 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9477 | { | |
3e43a32a MS |
9478 | /* Assume that the target has been restarted. Set |
9479 | inferior_ptid so that bits of core GDB realizes | |
9480 | there's something here, e.g., so that the user can | |
9481 | say "kill" again. */ | |
82f73884 PA |
9482 | inferior_ptid = magic_null_ptid; |
9483 | } | |
82f73884 | 9484 | } |
2d717e4f DJ |
9485 | } |
9486 | } | |
c906108c | 9487 | |
03583c20 | 9488 | static int |
2bfc0540 | 9489 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9490 | { |
4082afcc | 9491 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9492 | } |
9493 | ||
9494 | static void | |
9495 | extended_remote_disable_randomization (int val) | |
9496 | { | |
9497 | struct remote_state *rs = get_remote_state (); | |
9498 | char *reply; | |
9499 | ||
bba74b36 YQ |
9500 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9501 | val); | |
03583c20 UW |
9502 | putpkt (rs->buf); |
9503 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9504 | if (*reply == '\0') | |
9505 | error (_("Target does not support QDisableRandomization.")); | |
9506 | if (strcmp (reply, "OK") != 0) | |
9507 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9508 | } | |
9509 | ||
2d717e4f | 9510 | static int |
7c5ded6a | 9511 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9512 | { |
9513 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9514 | int len; |
94585166 | 9515 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9516 | |
2d717e4f DJ |
9517 | /* If the user has disabled vRun support, or we have detected that |
9518 | support is not available, do not try it. */ | |
4082afcc | 9519 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9520 | return -1; |
424163ea | 9521 | |
2d717e4f DJ |
9522 | strcpy (rs->buf, "vRun;"); |
9523 | len = strlen (rs->buf); | |
c906108c | 9524 | |
2d717e4f DJ |
9525 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9526 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9527 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9528 | strlen (remote_exec_file)); | |
2d717e4f | 9529 | |
7c5ded6a | 9530 | if (!args.empty ()) |
2d717e4f | 9531 | { |
2d717e4f | 9532 | int i; |
2d717e4f | 9533 | |
773a1edc | 9534 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9535 | for (i = 0; argv[i] != NULL; i++) |
9536 | { | |
9537 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9538 | error (_("Argument list too long for run packet")); | |
9539 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9540 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9541 | strlen (argv[i])); | |
2d717e4f | 9542 | } |
2d717e4f DJ |
9543 | } |
9544 | ||
9545 | rs->buf[len++] = '\0'; | |
9546 | ||
9547 | putpkt (rs->buf); | |
9548 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9549 | ||
4082afcc | 9550 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9551 | { |
4082afcc | 9552 | case PACKET_OK: |
3405876a | 9553 | /* We have a wait response. All is well. */ |
2d717e4f | 9554 | return 0; |
4082afcc PA |
9555 | case PACKET_UNKNOWN: |
9556 | return -1; | |
9557 | case PACKET_ERROR: | |
2d717e4f DJ |
9558 | if (remote_exec_file[0] == '\0') |
9559 | error (_("Running the default executable on the remote target failed; " | |
9560 | "try \"set remote exec-file\"?")); | |
9561 | else | |
9562 | error (_("Running \"%s\" on the remote target failed"), | |
9563 | remote_exec_file); | |
4082afcc PA |
9564 | default: |
9565 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9566 | } |
c906108c SS |
9567 | } |
9568 | ||
0a2dde4a SDJ |
9569 | /* Helper function to send set/unset environment packets. ACTION is |
9570 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9571 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9572 | sent. */ | |
9573 | ||
9574 | static void | |
9575 | send_environment_packet (struct remote_state *rs, | |
9576 | const char *action, | |
9577 | const char *packet, | |
9578 | const char *value) | |
9579 | { | |
9580 | /* Convert the environment variable to an hex string, which | |
9581 | is the best format to be transmitted over the wire. */ | |
9582 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9583 | strlen (value)); | |
9584 | ||
9585 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9586 | "%s:%s", packet, encoded_value.c_str ()); | |
9587 | ||
9588 | putpkt (rs->buf); | |
9589 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9590 | if (strcmp (rs->buf, "OK") != 0) | |
9591 | warning (_("Unable to %s environment variable '%s' on remote."), | |
9592 | action, value); | |
9593 | } | |
9594 | ||
9595 | /* Helper function to handle the QEnvironment* packets. */ | |
9596 | ||
9597 | static void | |
9598 | extended_remote_environment_support (struct remote_state *rs) | |
9599 | { | |
9600 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) | |
9601 | { | |
9602 | putpkt ("QEnvironmentReset"); | |
9603 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9604 | if (strcmp (rs->buf, "OK") != 0) | |
9605 | warning (_("Unable to reset environment on remote.")); | |
9606 | } | |
9607 | ||
9608 | gdb_environ *e = ¤t_inferior ()->environment; | |
9609 | ||
9610 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9611 | for (const std::string &el : e->user_set_env ()) | |
9612 | send_environment_packet (rs, "set", "QEnvironmentHexEncoded", | |
9613 | el.c_str ()); | |
9614 | ||
9615 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9616 | for (const std::string &el : e->user_unset_env ()) | |
9617 | send_environment_packet (rs, "unset", "QEnvironmentUnset", el.c_str ()); | |
9618 | } | |
9619 | ||
2d717e4f DJ |
9620 | /* In the extended protocol we want to be able to do things like |
9621 | "run" and have them basically work as expected. So we need | |
9622 | a special create_inferior function. We support changing the | |
9623 | executable file and the command line arguments, but not the | |
9624 | environment. */ | |
9625 | ||
43ff13b4 | 9626 | static void |
77a19445 | 9627 | extended_remote_create_inferior (struct target_ops *ops, |
7c5ded6a SDJ |
9628 | const char *exec_file, |
9629 | const std::string &args, | |
77a19445 | 9630 | char **env, int from_tty) |
43ff13b4 | 9631 | { |
3405876a PA |
9632 | int run_worked; |
9633 | char *stop_reply; | |
9634 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9635 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9636 | |
43ff13b4 | 9637 | /* If running asynchronously, register the target file descriptor |
23860348 | 9638 | with the event loop. */ |
75c99385 | 9639 | if (target_can_async_p ()) |
6a3753b3 | 9640 | target_async (1); |
43ff13b4 | 9641 | |
03583c20 | 9642 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9643 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9644 | extended_remote_disable_randomization (disable_randomization); |
9645 | ||
aefd8b33 SDJ |
9646 | /* If startup-with-shell is on, we inform gdbserver to start the |
9647 | remote inferior using a shell. */ | |
9648 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9649 | { | |
9650 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9651 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9652 | putpkt (rs->buf); | |
9653 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9654 | if (strcmp (rs->buf, "OK") != 0) | |
9655 | error (_("\ | |
9656 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9657 | rs->buf); | |
9658 | } | |
9659 | ||
0a2dde4a SDJ |
9660 | extended_remote_environment_support (rs); |
9661 | ||
43ff13b4 | 9662 | /* Now restart the remote server. */ |
3405876a PA |
9663 | run_worked = extended_remote_run (args) != -1; |
9664 | if (!run_worked) | |
2d717e4f DJ |
9665 | { |
9666 | /* vRun was not supported. Fail if we need it to do what the | |
9667 | user requested. */ | |
9668 | if (remote_exec_file[0]) | |
9669 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9670 | if (!args.empty ()) |
2d717e4f | 9671 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9672 | |
2d717e4f DJ |
9673 | /* Fall back to "R". */ |
9674 | extended_remote_restart (); | |
9675 | } | |
424163ea | 9676 | |
6c95b8df PA |
9677 | if (!have_inferiors ()) |
9678 | { | |
9679 | /* Clean up from the last time we ran, before we mark the target | |
9680 | running again. This will mark breakpoints uninserted, and | |
9681 | get_offsets may insert breakpoints. */ | |
9682 | init_thread_list (); | |
9683 | init_wait_for_inferior (); | |
9684 | } | |
45280a52 | 9685 | |
3405876a PA |
9686 | /* vRun's success return is a stop reply. */ |
9687 | stop_reply = run_worked ? rs->buf : NULL; | |
9688 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9689 | |
2d717e4f DJ |
9690 | /* Get updated offsets, if the stub uses qOffsets. */ |
9691 | get_offsets (); | |
2d717e4f | 9692 | } |
c906108c | 9693 | \f |
c5aa993b | 9694 | |
b775012e LM |
9695 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9696 | the list of conditions (in agent expression bytecode format), if any, the | |
9697 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9698 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9699 | |
9700 | static int | |
9701 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9702 | struct bp_target_info *bp_tgt, char *buf, |
9703 | char *buf_end) | |
b775012e | 9704 | { |
3cde5c42 | 9705 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
9706 | return 0; |
9707 | ||
9708 | buf += strlen (buf); | |
bba74b36 | 9709 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9710 | buf++; |
9711 | ||
83621223 | 9712 | /* Send conditions to the target. */ |
d538e36d | 9713 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 9714 | { |
bba74b36 | 9715 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 9716 | buf += strlen (buf); |
3cde5c42 | 9717 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
9718 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9719 | *buf = '\0'; | |
9720 | } | |
b775012e LM |
9721 | return 0; |
9722 | } | |
9723 | ||
d3ce09f5 SS |
9724 | static void |
9725 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9726 | struct bp_target_info *bp_tgt, char *buf) | |
9727 | { | |
3cde5c42 | 9728 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
9729 | return; |
9730 | ||
9731 | buf += strlen (buf); | |
9732 | ||
9733 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9734 | buf += strlen (buf); | |
9735 | ||
9736 | /* Concatenate all the agent expressions that are commands into the | |
9737 | cmds parameter. */ | |
df97be55 | 9738 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
9739 | { |
9740 | sprintf (buf, "X%x,", aexpr->len); | |
9741 | buf += strlen (buf); | |
3cde5c42 | 9742 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
9743 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9744 | *buf = '\0'; | |
9745 | } | |
d3ce09f5 SS |
9746 | } |
9747 | ||
8181d85f DJ |
9748 | /* Insert a breakpoint. On targets that have software breakpoint |
9749 | support, we ask the remote target to do the work; on targets | |
9750 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9751 | |
9752 | static int | |
3db08215 MM |
9753 | remote_insert_breakpoint (struct target_ops *ops, |
9754 | struct gdbarch *gdbarch, | |
a6d9a66e | 9755 | struct bp_target_info *bp_tgt) |
c906108c | 9756 | { |
d471ea57 AC |
9757 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9758 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9759 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9760 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9761 | |
4082afcc | 9762 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9763 | { |
0d5ed153 | 9764 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9765 | struct remote_state *rs; |
bba74b36 | 9766 | char *p, *endbuf; |
7c0f6dcc | 9767 | int bpsize; |
4fff2411 | 9768 | |
28439a30 PA |
9769 | /* Make sure the remote is pointing at the right process, if |
9770 | necessary. */ | |
9771 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9772 | set_general_process (); | |
9773 | ||
4fff2411 JZ |
9774 | rs = get_remote_state (); |
9775 | p = rs->buf; | |
bba74b36 | 9776 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9777 | |
96baa820 JM |
9778 | *(p++) = 'Z'; |
9779 | *(p++) = '0'; | |
9780 | *(p++) = ','; | |
7c0f6dcc | 9781 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9782 | p += hexnumstr (p, addr); |
579c6ad9 | 9783 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9784 | |
efcc2da7 | 9785 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9786 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9787 | |
78eff0ec | 9788 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9789 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9790 | ||
6d820c5c DJ |
9791 | putpkt (rs->buf); |
9792 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9793 | |
6d820c5c | 9794 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9795 | { |
d471ea57 AC |
9796 | case PACKET_ERROR: |
9797 | return -1; | |
9798 | case PACKET_OK: | |
9799 | return 0; | |
9800 | case PACKET_UNKNOWN: | |
9801 | break; | |
96baa820 JM |
9802 | } |
9803 | } | |
c906108c | 9804 | |
0000e5cc PA |
9805 | /* If this breakpoint has target-side commands but this stub doesn't |
9806 | support Z0 packets, throw error. */ | |
3cde5c42 | 9807 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
9808 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
9809 | Target doesn't support breakpoints that have target side commands.")); | |
9810 | ||
3db08215 | 9811 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9812 | } |
9813 | ||
9814 | static int | |
3db08215 MM |
9815 | remote_remove_breakpoint (struct target_ops *ops, |
9816 | struct gdbarch *gdbarch, | |
73971819 PA |
9817 | struct bp_target_info *bp_tgt, |
9818 | enum remove_bp_reason reason) | |
c906108c | 9819 | { |
8181d85f | 9820 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9821 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9822 | |
4082afcc | 9823 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9824 | { |
6d820c5c | 9825 | char *p = rs->buf; |
bba74b36 | 9826 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9827 | |
28439a30 PA |
9828 | /* Make sure the remote is pointing at the right process, if |
9829 | necessary. */ | |
9830 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9831 | set_general_process (); | |
9832 | ||
96baa820 JM |
9833 | *(p++) = 'z'; |
9834 | *(p++) = '0'; | |
9835 | *(p++) = ','; | |
9836 | ||
8181d85f DJ |
9837 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9838 | p += hexnumstr (p, addr); | |
579c6ad9 | 9839 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9840 | |
6d820c5c DJ |
9841 | putpkt (rs->buf); |
9842 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9843 | |
6d820c5c | 9844 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9845 | } |
9846 | ||
73971819 | 9847 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt, reason); |
c906108c SS |
9848 | } |
9849 | ||
f486487f | 9850 | static enum Z_packet_type |
d471ea57 AC |
9851 | watchpoint_to_Z_packet (int type) |
9852 | { | |
9853 | switch (type) | |
9854 | { | |
9855 | case hw_write: | |
bb858e6a | 9856 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9857 | break; |
9858 | case hw_read: | |
bb858e6a | 9859 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9860 | break; |
9861 | case hw_access: | |
bb858e6a | 9862 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9863 | break; |
9864 | default: | |
8e65ff28 | 9865 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9866 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9867 | } |
9868 | } | |
9869 | ||
3c3bea1c | 9870 | static int |
f486487f SM |
9871 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9872 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9873 | { |
d01949b6 | 9874 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9875 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9876 | char *p; |
d471ea57 | 9877 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9878 | |
4082afcc | 9879 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9880 | return 1; |
802188a7 | 9881 | |
28439a30 PA |
9882 | /* Make sure the remote is pointing at the right process, if |
9883 | necessary. */ | |
9884 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9885 | set_general_process (); | |
9886 | ||
bba74b36 | 9887 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9888 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9889 | addr = remote_address_masked (addr); |
9890 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9891 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9892 | |
6d820c5c DJ |
9893 | putpkt (rs->buf); |
9894 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9895 | |
6d820c5c | 9896 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9897 | { |
9898 | case PACKET_ERROR: | |
d471ea57 | 9899 | return -1; |
85d721b8 PA |
9900 | case PACKET_UNKNOWN: |
9901 | return 1; | |
d471ea57 AC |
9902 | case PACKET_OK: |
9903 | return 0; | |
9904 | } | |
8e65ff28 | 9905 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9906 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9907 | } |
9908 | ||
283002cf MR |
9909 | static int |
9910 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9911 | CORE_ADDR start, int length) | |
9912 | { | |
9913 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9914 | ||
9915 | return diff < length; | |
9916 | } | |
9917 | ||
d471ea57 | 9918 | |
3c3bea1c | 9919 | static int |
f486487f SM |
9920 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9921 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9922 | { |
d01949b6 | 9923 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9924 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9925 | char *p; |
d471ea57 AC |
9926 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9927 | ||
4082afcc | 9928 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9929 | return -1; |
802188a7 | 9930 | |
28439a30 PA |
9931 | /* Make sure the remote is pointing at the right process, if |
9932 | necessary. */ | |
9933 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9934 | set_general_process (); | |
9935 | ||
bba74b36 | 9936 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9937 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9938 | addr = remote_address_masked (addr); |
9939 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9940 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9941 | putpkt (rs->buf); |
9942 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9943 | |
6d820c5c | 9944 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9945 | { |
9946 | case PACKET_ERROR: | |
9947 | case PACKET_UNKNOWN: | |
9948 | return -1; | |
9949 | case PACKET_OK: | |
9950 | return 0; | |
9951 | } | |
8e65ff28 | 9952 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9953 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9954 | } |
9955 | ||
3c3bea1c | 9956 | |
501eef12 | 9957 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9958 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9959 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9960 | |
480a3f21 | 9961 | static int |
31568a15 TT |
9962 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9963 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9964 | { |
9965 | if (remote_hw_watchpoint_length_limit == 0) | |
9966 | return 0; | |
9967 | else if (remote_hw_watchpoint_length_limit < 0) | |
9968 | return 1; | |
9969 | else if (len <= remote_hw_watchpoint_length_limit) | |
9970 | return 1; | |
9971 | else | |
9972 | return 0; | |
9973 | } | |
9974 | ||
b9362cc7 | 9975 | static int |
5461485a | 9976 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9977 | enum bptype type, int cnt, int ot) |
96baa820 | 9978 | { |
3c3bea1c GS |
9979 | if (type == bp_hardware_breakpoint) |
9980 | { | |
9981 | if (remote_hw_breakpoint_limit == 0) | |
9982 | return 0; | |
501eef12 AC |
9983 | else if (remote_hw_breakpoint_limit < 0) |
9984 | return 1; | |
3c3bea1c GS |
9985 | else if (cnt <= remote_hw_breakpoint_limit) |
9986 | return 1; | |
9987 | } | |
9988 | else | |
9989 | { | |
9990 | if (remote_hw_watchpoint_limit == 0) | |
9991 | return 0; | |
501eef12 AC |
9992 | else if (remote_hw_watchpoint_limit < 0) |
9993 | return 1; | |
3c3bea1c GS |
9994 | else if (ot) |
9995 | return -1; | |
9996 | else if (cnt <= remote_hw_watchpoint_limit) | |
9997 | return 1; | |
9998 | } | |
9999 | return -1; | |
10000 | } | |
10001 | ||
f7e6eed5 PA |
10002 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10003 | ||
10004 | static int | |
10005 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10006 | { | |
799a2abe | 10007 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10008 | |
799a2abe PA |
10009 | return (thread->priv != NULL |
10010 | && thread->priv->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT); | |
f7e6eed5 PA |
10011 | } |
10012 | ||
10013 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10014 | remote. */ | |
10015 | ||
10016 | static int | |
10017 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10018 | { | |
f7e6eed5 PA |
10019 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10020 | } | |
10021 | ||
10022 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10023 | ||
10024 | static int | |
10025 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10026 | { | |
799a2abe | 10027 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10028 | |
799a2abe PA |
10029 | return (thread->priv != NULL |
10030 | && thread->priv->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT); | |
f7e6eed5 PA |
10031 | } |
10032 | ||
10033 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10034 | remote. */ | |
10035 | ||
10036 | static int | |
10037 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10038 | { | |
f7e6eed5 PA |
10039 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10040 | } | |
10041 | ||
b9362cc7 | 10042 | static int |
6a109b6b | 10043 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 10044 | { |
799a2abe | 10045 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10046 | |
799a2abe PA |
10047 | return (thread->priv != NULL |
10048 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT); | |
3c3bea1c GS |
10049 | } |
10050 | ||
4aa7a7f5 JJ |
10051 | static int |
10052 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 10053 | { |
799a2abe | 10054 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10055 | |
799a2abe PA |
10056 | if (thread->priv != NULL |
10057 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT) | |
4aa7a7f5 | 10058 | { |
799a2abe PA |
10059 | *addr_p = thread->priv->watch_data_address; |
10060 | return 1; | |
4aa7a7f5 JJ |
10061 | } |
10062 | ||
799a2abe | 10063 | return 0; |
3c3bea1c GS |
10064 | } |
10065 | ||
10066 | ||
10067 | static int | |
23a26771 | 10068 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10069 | struct bp_target_info *bp_tgt) |
3c3bea1c | 10070 | { |
0d5ed153 | 10071 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10072 | struct remote_state *rs; |
bba74b36 | 10073 | char *p, *endbuf; |
dd61ec5c | 10074 | char *message; |
3c3bea1c | 10075 | |
4082afcc | 10076 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10077 | return -1; |
2bc416ba | 10078 | |
28439a30 PA |
10079 | /* Make sure the remote is pointing at the right process, if |
10080 | necessary. */ | |
10081 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10082 | set_general_process (); | |
10083 | ||
4fff2411 JZ |
10084 | rs = get_remote_state (); |
10085 | p = rs->buf; | |
bba74b36 | 10086 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10087 | |
96baa820 JM |
10088 | *(p++) = 'Z'; |
10089 | *(p++) = '1'; | |
10090 | *(p++) = ','; | |
802188a7 | 10091 | |
0d5ed153 | 10092 | addr = remote_address_masked (addr); |
96baa820 | 10093 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10094 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10095 | |
efcc2da7 | 10096 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 10097 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10098 | |
78eff0ec | 10099 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
10100 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10101 | ||
6d820c5c DJ |
10102 | putpkt (rs->buf); |
10103 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10104 | |
6d820c5c | 10105 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10106 | { |
10107 | case PACKET_ERROR: | |
dd61ec5c MW |
10108 | if (rs->buf[1] == '.') |
10109 | { | |
10110 | message = strchr (rs->buf + 2, '.'); | |
10111 | if (message) | |
0316657e | 10112 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10113 | } |
10114 | return -1; | |
d471ea57 AC |
10115 | case PACKET_UNKNOWN: |
10116 | return -1; | |
10117 | case PACKET_OK: | |
10118 | return 0; | |
10119 | } | |
8e65ff28 | 10120 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10121 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10122 | } |
10123 | ||
d471ea57 | 10124 | |
802188a7 | 10125 | static int |
a64dc96c | 10126 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10127 | struct bp_target_info *bp_tgt) |
96baa820 | 10128 | { |
8181d85f | 10129 | CORE_ADDR addr; |
d01949b6 | 10130 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10131 | char *p = rs->buf; |
bba74b36 | 10132 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10133 | |
4082afcc | 10134 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10135 | return -1; |
802188a7 | 10136 | |
28439a30 PA |
10137 | /* Make sure the remote is pointing at the right process, if |
10138 | necessary. */ | |
10139 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10140 | set_general_process (); | |
10141 | ||
96baa820 JM |
10142 | *(p++) = 'z'; |
10143 | *(p++) = '1'; | |
10144 | *(p++) = ','; | |
802188a7 | 10145 | |
8181d85f | 10146 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10147 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10148 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10149 | |
6d820c5c DJ |
10150 | putpkt (rs->buf); |
10151 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10152 | |
6d820c5c | 10153 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10154 | { |
10155 | case PACKET_ERROR: | |
10156 | case PACKET_UNKNOWN: | |
10157 | return -1; | |
10158 | case PACKET_OK: | |
10159 | return 0; | |
10160 | } | |
8e65ff28 | 10161 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10162 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10163 | } |
96baa820 | 10164 | |
4a5e7a5b PA |
10165 | /* Verify memory using the "qCRC:" request. */ |
10166 | ||
10167 | static int | |
10168 | remote_verify_memory (struct target_ops *ops, | |
10169 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
10170 | { | |
10171 | struct remote_state *rs = get_remote_state (); | |
10172 | unsigned long host_crc, target_crc; | |
10173 | char *tmp; | |
10174 | ||
936d2992 PA |
10175 | /* It doesn't make sense to use qCRC if the remote target is |
10176 | connected but not running. */ | |
10177 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10178 | { | |
10179 | enum packet_result result; | |
28439a30 | 10180 | |
936d2992 PA |
10181 | /* Make sure the remote is pointing at the right process. */ |
10182 | set_general_process (); | |
4a5e7a5b | 10183 | |
936d2992 PA |
10184 | /* FIXME: assumes lma can fit into long. */ |
10185 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10186 | (long) lma, (long) size); | |
10187 | putpkt (rs->buf); | |
4a5e7a5b | 10188 | |
936d2992 PA |
10189 | /* Be clever; compute the host_crc before waiting for target |
10190 | reply. */ | |
10191 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10192 | ||
10193 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10194 | |
936d2992 PA |
10195 | result = packet_ok (rs->buf, |
10196 | &remote_protocol_packets[PACKET_qCRC]); | |
10197 | if (result == PACKET_ERROR) | |
10198 | return -1; | |
10199 | else if (result == PACKET_OK) | |
10200 | { | |
10201 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10202 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10203 | |
936d2992 PA |
10204 | return (host_crc == target_crc); |
10205 | } | |
10206 | } | |
4a5e7a5b | 10207 | |
936d2992 | 10208 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
10209 | } |
10210 | ||
c906108c SS |
10211 | /* compare-sections command |
10212 | ||
10213 | With no arguments, compares each loadable section in the exec bfd | |
10214 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10215 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10216 | |
c906108c | 10217 | static void |
fba45db2 | 10218 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
10219 | { |
10220 | asection *s; | |
c906108c | 10221 | struct cleanup *old_chain; |
948f8e3d | 10222 | gdb_byte *sectdata; |
ce359b09 | 10223 | const char *sectname; |
c906108c SS |
10224 | bfd_size_type size; |
10225 | bfd_vma lma; | |
10226 | int matched = 0; | |
10227 | int mismatched = 0; | |
4a5e7a5b | 10228 | int res; |
95cf3b38 | 10229 | int read_only = 0; |
c906108c SS |
10230 | |
10231 | if (!exec_bfd) | |
8a3fe4f8 | 10232 | error (_("command cannot be used without an exec file")); |
c906108c | 10233 | |
28439a30 PA |
10234 | /* Make sure the remote is pointing at the right process. */ |
10235 | set_general_process (); | |
10236 | ||
95cf3b38 DT |
10237 | if (args != NULL && strcmp (args, "-r") == 0) |
10238 | { | |
10239 | read_only = 1; | |
10240 | args = NULL; | |
10241 | } | |
10242 | ||
c5aa993b | 10243 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10244 | { |
10245 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10246 | continue; /* Skip non-loadable section. */ |
c906108c | 10247 | |
95cf3b38 DT |
10248 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10249 | continue; /* Skip writeable sections */ | |
10250 | ||
2c500098 | 10251 | size = bfd_get_section_size (s); |
c906108c | 10252 | if (size == 0) |
0df8b418 | 10253 | continue; /* Skip zero-length section. */ |
c906108c | 10254 | |
ce359b09 | 10255 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10256 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10257 | continue; /* Not the section selected by user. */ |
c906108c | 10258 | |
0df8b418 | 10259 | matched = 1; /* Do this section. */ |
c906108c | 10260 | lma = s->lma; |
c906108c | 10261 | |
224c3ddb | 10262 | sectdata = (gdb_byte *) xmalloc (size); |
b8c9b27d | 10263 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 10264 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 10265 | |
4a5e7a5b PA |
10266 | res = target_verify_memory (sectdata, lma, size); |
10267 | ||
10268 | if (res == -1) | |
5af949e3 | 10269 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10270 | paddress (target_gdbarch (), lma), |
10271 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10272 | |
5af949e3 | 10273 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10274 | paddress (target_gdbarch (), lma), |
10275 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10276 | if (res) |
c906108c SS |
10277 | printf_filtered ("matched.\n"); |
10278 | else | |
c5aa993b JM |
10279 | { |
10280 | printf_filtered ("MIS-MATCHED!\n"); | |
10281 | mismatched++; | |
10282 | } | |
c906108c SS |
10283 | |
10284 | do_cleanups (old_chain); | |
10285 | } | |
10286 | if (mismatched > 0) | |
936d2992 | 10287 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10288 | the loaded file\n")); |
c906108c | 10289 | if (args && !matched) |
a3f17187 | 10290 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10291 | } |
10292 | ||
0e7f50da UW |
10293 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10294 | into remote target. The number of bytes written to the remote | |
10295 | target is returned, or -1 for error. */ | |
10296 | ||
9b409511 | 10297 | static enum target_xfer_status |
0e7f50da UW |
10298 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
10299 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 10300 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10301 | struct packet_config *packet) |
10302 | { | |
10303 | int i, buf_len; | |
10304 | ULONGEST n; | |
0e7f50da UW |
10305 | struct remote_state *rs = get_remote_state (); |
10306 | int max_size = get_memory_write_packet_size (); | |
10307 | ||
10308 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 10309 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10310 | |
10311 | /* Insert header. */ | |
10312 | i = snprintf (rs->buf, max_size, | |
10313 | "qXfer:%s:write:%s:%s:", | |
10314 | object_name, annex ? annex : "", | |
10315 | phex_nz (offset, sizeof offset)); | |
10316 | max_size -= (i + 1); | |
10317 | ||
10318 | /* Escape as much data as fits into rs->buf. */ | |
10319 | buf_len = remote_escape_output | |
124e13d9 | 10320 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10321 | |
10322 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10323 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10324 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10325 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10326 | |
10327 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10328 | |
10329 | *xfered_len = n; | |
10330 | return TARGET_XFER_OK; | |
0e7f50da UW |
10331 | } |
10332 | ||
0876f84a DJ |
10333 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10334 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10335 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10336 | The number of bytes read may be less than LEN without indicating an | |
10337 | EOF. PACKET is checked and updated to indicate whether the remote | |
10338 | target supports this object. */ | |
10339 | ||
9b409511 | 10340 | static enum target_xfer_status |
0876f84a DJ |
10341 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
10342 | const char *annex, | |
10343 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10344 | ULONGEST *xfered_len, |
0876f84a DJ |
10345 | struct packet_config *packet) |
10346 | { | |
0876f84a | 10347 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10348 | LONGEST i, n, packet_len; |
10349 | ||
10350 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 10351 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10352 | |
10353 | /* Check whether we've cached an end-of-object packet that matches | |
10354 | this request. */ | |
8e88304f | 10355 | if (rs->finished_object) |
0876f84a | 10356 | { |
8e88304f TT |
10357 | if (strcmp (object_name, rs->finished_object) == 0 |
10358 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10359 | && offset == rs->finished_offset) | |
9b409511 YQ |
10360 | return TARGET_XFER_EOF; |
10361 | ||
0876f84a DJ |
10362 | |
10363 | /* Otherwise, we're now reading something different. Discard | |
10364 | the cache. */ | |
8e88304f TT |
10365 | xfree (rs->finished_object); |
10366 | xfree (rs->finished_annex); | |
10367 | rs->finished_object = NULL; | |
10368 | rs->finished_annex = NULL; | |
0876f84a DJ |
10369 | } |
10370 | ||
10371 | /* Request only enough to fit in a single packet. The actual data | |
10372 | may not, since we don't know how much of it will need to be escaped; | |
10373 | the target is free to respond with slightly less data. We subtract | |
10374 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10375 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10376 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10377 | object_name, annex ? annex : "", | |
10378 | phex_nz (offset, sizeof offset), | |
10379 | phex_nz (n, sizeof n)); | |
10380 | i = putpkt (rs->buf); | |
10381 | if (i < 0) | |
2ed4b548 | 10382 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10383 | |
10384 | rs->buf[0] = '\0'; | |
10385 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10386 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10387 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10388 | |
10389 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10390 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10391 | ||
10392 | /* 'm' means there is (or at least might be) more data after this | |
10393 | batch. That does not make sense unless there's at least one byte | |
10394 | of data in this reply. */ | |
10395 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10396 | error (_("Remote qXfer reply contained no data.")); | |
10397 | ||
10398 | /* Got some data. */ | |
bc20a4af PA |
10399 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10400 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10401 | |
10402 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10403 | or possibly empty. If we have the final block of a non-empty |
10404 | object, record this fact to bypass a subsequent partial read. */ | |
10405 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10406 | { |
8e88304f TT |
10407 | rs->finished_object = xstrdup (object_name); |
10408 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10409 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10410 | } |
10411 | ||
9b409511 YQ |
10412 | if (i == 0) |
10413 | return TARGET_XFER_EOF; | |
10414 | else | |
10415 | { | |
10416 | *xfered_len = i; | |
10417 | return TARGET_XFER_OK; | |
10418 | } | |
0876f84a DJ |
10419 | } |
10420 | ||
9b409511 | 10421 | static enum target_xfer_status |
4b8a223f | 10422 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 10423 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
10424 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
10425 | ULONGEST *xfered_len) | |
c906108c | 10426 | { |
82f73884 | 10427 | struct remote_state *rs; |
c906108c | 10428 | int i; |
6d820c5c | 10429 | char *p2; |
1e3ff5ad | 10430 | char query_type; |
124e13d9 | 10431 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10432 | |
e6e4e701 | 10433 | set_remote_traceframe (); |
82f73884 PA |
10434 | set_general_thread (inferior_ptid); |
10435 | ||
10436 | rs = get_remote_state (); | |
10437 | ||
b2182ed2 | 10438 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10439 | if (object == TARGET_OBJECT_MEMORY) |
10440 | { | |
2d717e4f DJ |
10441 | /* If the remote target is connected but not running, we should |
10442 | pass this request down to a lower stratum (e.g. the executable | |
10443 | file). */ | |
10444 | if (!target_has_execution) | |
9b409511 | 10445 | return TARGET_XFER_EOF; |
2d717e4f | 10446 | |
21e3b9b9 | 10447 | if (writebuf != NULL) |
124e13d9 SM |
10448 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10449 | xfered_len); | |
21e3b9b9 | 10450 | else |
124e13d9 SM |
10451 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
10452 | xfered_len); | |
21e3b9b9 DJ |
10453 | } |
10454 | ||
0df8b418 | 10455 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10456 | if (object == TARGET_OBJECT_SPU) |
10457 | { | |
10458 | if (readbuf) | |
10459 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
10460 | xfered_len, &remote_protocol_packets |
10461 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
10462 | else |
10463 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
10464 | xfered_len, &remote_protocol_packets |
10465 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10466 | } |
10467 | ||
4aa995e1 PA |
10468 | /* Handle extra signal info using qxfer packets. */ |
10469 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10470 | { | |
10471 | if (readbuf) | |
10472 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10473 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10474 | [PACKET_qXfer_siginfo_read]); |
10475 | else | |
3e43a32a | 10476 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10477 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10478 | &remote_protocol_packets |
10479 | [PACKET_qXfer_siginfo_write]); | |
10480 | } | |
10481 | ||
0fb4aa4b PA |
10482 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10483 | { | |
10484 | if (readbuf) | |
3e43a32a | 10485 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10486 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10487 | &remote_protocol_packets |
10488 | [PACKET_qXfer_statictrace_read]); | |
10489 | else | |
2ed4b548 | 10490 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10491 | } |
10492 | ||
a76d924d DJ |
10493 | /* Only handle flash writes. */ |
10494 | if (writebuf != NULL) | |
10495 | { | |
a76d924d DJ |
10496 | switch (object) |
10497 | { | |
10498 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10499 | return remote_flash_write (ops, offset, len, xfered_len, |
10500 | writebuf); | |
a76d924d DJ |
10501 | |
10502 | default: | |
2ed4b548 | 10503 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10504 | } |
10505 | } | |
4b8a223f | 10506 | |
1e3ff5ad AC |
10507 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10508 | objects!!! Instead specify new query packets. */ | |
10509 | switch (object) | |
c906108c | 10510 | { |
1e3ff5ad AC |
10511 | case TARGET_OBJECT_AVR: |
10512 | query_type = 'R'; | |
10513 | break; | |
802188a7 RM |
10514 | |
10515 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10516 | gdb_assert (annex == NULL); |
10517 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10518 | xfered_len, |
0876f84a | 10519 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10520 | |
23181151 DJ |
10521 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10522 | return remote_read_qxfer | |
9b409511 | 10523 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10524 | &remote_protocol_packets[PACKET_qXfer_features]); |
10525 | ||
cfa9d6d9 DJ |
10526 | case TARGET_OBJECT_LIBRARIES: |
10527 | return remote_read_qxfer | |
9b409511 | 10528 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10529 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10530 | ||
2268b414 JK |
10531 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10532 | return remote_read_qxfer | |
9b409511 | 10533 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10534 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10535 | ||
fd79ecee DJ |
10536 | case TARGET_OBJECT_MEMORY_MAP: |
10537 | gdb_assert (annex == NULL); | |
10538 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10539 | xfered_len, |
fd79ecee DJ |
10540 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10541 | ||
07e059b5 VP |
10542 | case TARGET_OBJECT_OSDATA: |
10543 | /* Should only get here if we're connected. */ | |
5d93a237 | 10544 | gdb_assert (rs->remote_desc); |
07e059b5 | 10545 | return remote_read_qxfer |
9b409511 | 10546 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10547 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10548 | ||
dc146f7c VP |
10549 | case TARGET_OBJECT_THREADS: |
10550 | gdb_assert (annex == NULL); | |
10551 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10552 | xfered_len, |
dc146f7c VP |
10553 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10554 | ||
b3b9301e PA |
10555 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10556 | gdb_assert (annex == NULL); | |
10557 | return remote_read_qxfer | |
9b409511 | 10558 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10559 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10560 | |
10561 | case TARGET_OBJECT_FDPIC: | |
10562 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10563 | xfered_len, |
78d85199 | 10564 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10565 | |
10566 | case TARGET_OBJECT_OPENVMS_UIB: | |
10567 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10568 | xfered_len, |
169081d0 TG |
10569 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10570 | ||
9accd112 MM |
10571 | case TARGET_OBJECT_BTRACE: |
10572 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10573 | xfered_len, |
9accd112 MM |
10574 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10575 | ||
f4abbc16 MM |
10576 | case TARGET_OBJECT_BTRACE_CONF: |
10577 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10578 | len, xfered_len, | |
10579 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10580 | ||
c78fa86a GB |
10581 | case TARGET_OBJECT_EXEC_FILE: |
10582 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10583 | len, xfered_len, | |
10584 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10585 | ||
1e3ff5ad | 10586 | default: |
2ed4b548 | 10587 | return TARGET_XFER_E_IO; |
c906108c SS |
10588 | } |
10589 | ||
0df8b418 | 10590 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10591 | large enough let the caller deal with it. */ |
ea9c271d | 10592 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10593 | return TARGET_XFER_E_IO; |
ea9c271d | 10594 | len = get_remote_packet_size (); |
1e3ff5ad | 10595 | |
23860348 | 10596 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10597 | if (!rs->remote_desc) |
8a3fe4f8 | 10598 | error (_("remote query is only available after target open")); |
c906108c | 10599 | |
1e3ff5ad | 10600 | gdb_assert (annex != NULL); |
4b8a223f | 10601 | gdb_assert (readbuf != NULL); |
c906108c | 10602 | |
6d820c5c | 10603 | p2 = rs->buf; |
c906108c SS |
10604 | *p2++ = 'q'; |
10605 | *p2++ = query_type; | |
10606 | ||
23860348 MS |
10607 | /* We used one buffer char for the remote protocol q command and |
10608 | another for the query type. As the remote protocol encapsulation | |
10609 | uses 4 chars plus one extra in case we are debugging | |
10610 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10611 | string. */ | |
c906108c | 10612 | i = 0; |
ea9c271d | 10613 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10614 | { |
1e3ff5ad AC |
10615 | /* Bad caller may have sent forbidden characters. */ |
10616 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10617 | *p2++ = annex[i]; | |
c906108c SS |
10618 | i++; |
10619 | } | |
1e3ff5ad AC |
10620 | *p2 = '\0'; |
10621 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10622 | |
6d820c5c | 10623 | i = putpkt (rs->buf); |
c5aa993b | 10624 | if (i < 0) |
2ed4b548 | 10625 | return TARGET_XFER_E_IO; |
c906108c | 10626 | |
6d820c5c DJ |
10627 | getpkt (&rs->buf, &rs->buf_size, 0); |
10628 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10629 | |
9b409511 YQ |
10630 | *xfered_len = strlen ((char *) readbuf); |
10631 | return TARGET_XFER_OK; | |
c906108c SS |
10632 | } |
10633 | ||
09c98b44 DB |
10634 | /* Implementation of to_get_memory_xfer_limit. */ |
10635 | ||
10636 | static ULONGEST | |
10637 | remote_get_memory_xfer_limit (struct target_ops *ops) | |
10638 | { | |
10639 | return get_memory_write_packet_size (); | |
10640 | } | |
10641 | ||
08388c79 DE |
10642 | static int |
10643 | remote_search_memory (struct target_ops* ops, | |
10644 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10645 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10646 | CORE_ADDR *found_addrp) | |
10647 | { | |
f5656ead | 10648 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10649 | struct remote_state *rs = get_remote_state (); |
10650 | int max_size = get_memory_write_packet_size (); | |
10651 | struct packet_config *packet = | |
10652 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10653 | /* Number of packet bytes used to encode the pattern; |
10654 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10655 | int escaped_pattern_len; |
0df8b418 | 10656 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10657 | int used_pattern_len; |
10658 | int i; | |
10659 | int found; | |
10660 | ULONGEST found_addr; | |
10661 | ||
10662 | /* Don't go to the target if we don't have to. | |
10663 | This is done before checking packet->support to avoid the possibility that | |
10664 | a success for this edge case means the facility works in general. */ | |
10665 | if (pattern_len > search_space_len) | |
10666 | return 0; | |
10667 | if (pattern_len == 0) | |
10668 | { | |
10669 | *found_addrp = start_addr; | |
10670 | return 1; | |
10671 | } | |
10672 | ||
10673 | /* If we already know the packet isn't supported, fall back to the simple | |
10674 | way of searching memory. */ | |
10675 | ||
4082afcc | 10676 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10677 | { |
10678 | /* Target doesn't provided special support, fall back and use the | |
10679 | standard support (copy memory and do the search here). */ | |
10680 | return simple_search_memory (ops, start_addr, search_space_len, | |
10681 | pattern, pattern_len, found_addrp); | |
10682 | } | |
10683 | ||
28439a30 PA |
10684 | /* Make sure the remote is pointing at the right process. */ |
10685 | set_general_process (); | |
10686 | ||
08388c79 DE |
10687 | /* Insert header. */ |
10688 | i = snprintf (rs->buf, max_size, | |
10689 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10690 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10691 | phex_nz (search_space_len, sizeof (search_space_len))); |
10692 | max_size -= (i + 1); | |
10693 | ||
10694 | /* Escape as much data as fits into rs->buf. */ | |
10695 | escaped_pattern_len = | |
124e13d9 | 10696 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10697 | &used_pattern_len, max_size); |
10698 | ||
10699 | /* Bail if the pattern is too large. */ | |
10700 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10701 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10702 | |
10703 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10704 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10705 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10706 | { | |
10707 | /* The request may not have worked because the command is not | |
10708 | supported. If so, fall back to the simple way. */ | |
10709 | if (packet->support == PACKET_DISABLE) | |
10710 | { | |
10711 | return simple_search_memory (ops, start_addr, search_space_len, | |
10712 | pattern, pattern_len, found_addrp); | |
10713 | } | |
10714 | return -1; | |
10715 | } | |
10716 | ||
10717 | if (rs->buf[0] == '0') | |
10718 | found = 0; | |
10719 | else if (rs->buf[0] == '1') | |
10720 | { | |
10721 | found = 1; | |
10722 | if (rs->buf[1] != ',') | |
10e0fa18 | 10723 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10724 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10725 | *found_addrp = found_addr; | |
10726 | } | |
10727 | else | |
10e0fa18 | 10728 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10729 | |
10730 | return found; | |
10731 | } | |
10732 | ||
96baa820 | 10733 | static void |
a30bf1f1 | 10734 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10735 | struct ui_file *outbuf) |
96baa820 | 10736 | { |
d01949b6 | 10737 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10738 | char *p = rs->buf; |
96baa820 | 10739 | |
5d93a237 | 10740 | if (!rs->remote_desc) |
8a3fe4f8 | 10741 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10742 | |
23860348 | 10743 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10744 | if (command == NULL) |
10745 | command = ""; | |
10746 | ||
23860348 | 10747 | /* The query prefix. */ |
2e9f7625 DJ |
10748 | strcpy (rs->buf, "qRcmd,"); |
10749 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10750 | |
3e43a32a MS |
10751 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10752 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10753 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10754 | |
23860348 | 10755 | /* Encode the actual command. */ |
a30bf1f1 | 10756 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10757 | |
6d820c5c | 10758 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10759 | error (_("Communication problem with target.")); |
96baa820 JM |
10760 | |
10761 | /* get/display the response */ | |
10762 | while (1) | |
10763 | { | |
2e9f7625 DJ |
10764 | char *buf; |
10765 | ||
00bf0b85 | 10766 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10767 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10768 | rs->buf[0] = '\0'; |
5b37825d PW |
10769 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10770 | { | |
10771 | /* Timeout. Continue to (try to) read responses. | |
10772 | This is better than stopping with an error, assuming the stub | |
10773 | is still executing the (long) monitor command. | |
10774 | If needed, the user can interrupt gdb using C-c, obtaining | |
10775 | an effect similar to stop on timeout. */ | |
10776 | continue; | |
10777 | } | |
2e9f7625 | 10778 | buf = rs->buf; |
96baa820 | 10779 | if (buf[0] == '\0') |
8a3fe4f8 | 10780 | error (_("Target does not support this command.")); |
96baa820 JM |
10781 | if (buf[0] == 'O' && buf[1] != 'K') |
10782 | { | |
23860348 | 10783 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10784 | continue; |
10785 | } | |
10786 | if (strcmp (buf, "OK") == 0) | |
10787 | break; | |
7be570e7 JM |
10788 | if (strlen (buf) == 3 && buf[0] == 'E' |
10789 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10790 | { | |
8a3fe4f8 | 10791 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10792 | } |
96baa820 JM |
10793 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10794 | { | |
10795 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10796 | |
96baa820 JM |
10797 | fputc_unfiltered (c, outbuf); |
10798 | } | |
10799 | break; | |
10800 | } | |
10801 | } | |
10802 | ||
fd79ecee DJ |
10803 | static VEC(mem_region_s) * |
10804 | remote_memory_map (struct target_ops *ops) | |
10805 | { | |
10806 | VEC(mem_region_s) *result = NULL; | |
10807 | char *text = target_read_stralloc (¤t_target, | |
10808 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
10809 | ||
10810 | if (text) | |
10811 | { | |
10812 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 10813 | |
fd79ecee DJ |
10814 | result = parse_memory_map (text); |
10815 | do_cleanups (back_to); | |
10816 | } | |
10817 | ||
10818 | return result; | |
10819 | } | |
10820 | ||
c906108c | 10821 | static void |
fba45db2 | 10822 | packet_command (char *args, int from_tty) |
c906108c | 10823 | { |
d01949b6 | 10824 | struct remote_state *rs = get_remote_state (); |
c906108c | 10825 | |
5d93a237 | 10826 | if (!rs->remote_desc) |
8a3fe4f8 | 10827 | error (_("command can only be used with remote target")); |
c906108c | 10828 | |
c5aa993b | 10829 | if (!args) |
8a3fe4f8 | 10830 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10831 | |
10832 | puts_filtered ("sending: "); | |
10833 | print_packet (args); | |
10834 | puts_filtered ("\n"); | |
10835 | putpkt (args); | |
10836 | ||
6d820c5c | 10837 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10838 | puts_filtered ("received: "); |
6d820c5c | 10839 | print_packet (rs->buf); |
c906108c SS |
10840 | puts_filtered ("\n"); |
10841 | } | |
10842 | ||
10843 | #if 0 | |
23860348 | 10844 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10845 | |
a14ed312 | 10846 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10847 | |
a14ed312 | 10848 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10849 | |
a14ed312 | 10850 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10851 | |
a14ed312 | 10852 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10853 | |
23860348 | 10854 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10855 | |
a14ed312 | 10856 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10857 | |
23860348 | 10858 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10859 | |
a14ed312 | 10860 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10861 | |
a14ed312 | 10862 | static void init_remote_threadtests (void); |
c906108c | 10863 | |
23860348 | 10864 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10865 | |
10866 | static void | |
fba45db2 | 10867 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10868 | { |
10869 | int sample_thread = SAMPLE_THREAD; | |
10870 | ||
a3f17187 | 10871 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10872 | set_general_thread (sample_thread); |
c906108c SS |
10873 | } |
10874 | ||
10875 | ||
10876 | static void | |
fba45db2 | 10877 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10878 | { |
10879 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10880 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10881 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10882 | |
79d7f229 | 10883 | if (remote_thread_alive (ptid)) |
c906108c SS |
10884 | printf_filtered ("PASS: Thread alive test\n"); |
10885 | else | |
10886 | printf_filtered ("FAIL: Thread alive test\n"); | |
10887 | } | |
10888 | ||
23860348 | 10889 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10890 | |
10891 | void | |
fba45db2 | 10892 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10893 | { |
10894 | char hexid[20]; | |
10895 | ||
23860348 | 10896 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10897 | hexid[16] = 0; |
10898 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10899 | } | |
10900 | ||
10901 | static void | |
fba45db2 | 10902 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10903 | { |
10904 | int startflag = 1; | |
10905 | threadref nextthread; | |
10906 | int done, result_count; | |
10907 | threadref threadlist[3]; | |
10908 | ||
10909 | printf_filtered ("Remote Threadlist test\n"); | |
10910 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10911 | &result_count, &threadlist[0])) | |
10912 | printf_filtered ("FAIL: threadlist test\n"); | |
10913 | else | |
10914 | { | |
10915 | threadref *scan = threadlist; | |
10916 | threadref *limit = scan + result_count; | |
10917 | ||
10918 | while (scan < limit) | |
10919 | output_threadid (" thread ", scan++); | |
10920 | } | |
10921 | } | |
10922 | ||
10923 | void | |
fba45db2 | 10924 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10925 | { |
10926 | output_threadid ("Threadid: ", &info->threadid); | |
10927 | printf_filtered ("Name: %s\n ", info->shortname); | |
10928 | printf_filtered ("State: %s\n", info->display); | |
10929 | printf_filtered ("other: %s\n\n", info->more_display); | |
10930 | } | |
10931 | ||
10932 | int | |
fba45db2 | 10933 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10934 | { |
10935 | int result; | |
10936 | int set; | |
10937 | struct gdb_ext_thread_info threadinfo; | |
10938 | ||
10939 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10940 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10941 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10942 | display_thread_info (&threadinfo); | |
10943 | return result; | |
10944 | } | |
10945 | ||
10946 | static void | |
fba45db2 | 10947 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10948 | { |
10949 | int athread = SAMPLE_THREAD; | |
10950 | threadref thread; | |
10951 | int set; | |
10952 | ||
10953 | int_to_threadref (&thread, athread); | |
10954 | printf_filtered ("Remote Threadinfo test\n"); | |
10955 | if (!get_and_display_threadinfo (&thread)) | |
10956 | printf_filtered ("FAIL cannot get thread info\n"); | |
10957 | } | |
10958 | ||
10959 | static int | |
fba45db2 | 10960 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10961 | { |
10962 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10963 | return get_and_display_threadinfo (ref); | |
10964 | } | |
10965 | ||
10966 | static void | |
fba45db2 | 10967 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10968 | { |
10969 | printf_filtered ("Remote Threadlist update test\n"); | |
10970 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10971 | } | |
10972 | ||
10973 | static void | |
10974 | init_remote_threadtests (void) | |
10975 | { | |
3e43a32a MS |
10976 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10977 | _("Fetch and print the remote list of " | |
10978 | "thread identifiers, one pkt only")); | |
c906108c | 10979 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10980 | _("Fetch and display info about one thread")); |
c906108c | 10981 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10982 | _("Test setting to a different thread")); |
c906108c | 10983 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10984 | _("Iterate through updating all remote thread info")); |
c906108c | 10985 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10986 | _(" Remote thread alive test ")); |
c906108c SS |
10987 | } |
10988 | ||
10989 | #endif /* 0 */ | |
10990 | ||
f3fb8c85 MS |
10991 | /* Convert a thread ID to a string. Returns the string in a static |
10992 | buffer. */ | |
10993 | ||
7a114964 | 10994 | static const char * |
117de6a9 | 10995 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10996 | { |
79d7f229 | 10997 | static char buf[64]; |
82f73884 | 10998 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10999 | |
7cee1e54 PA |
11000 | if (ptid_equal (ptid, null_ptid)) |
11001 | return normal_pid_to_str (ptid); | |
11002 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
11003 | { |
11004 | /* Printing an inferior target id. */ | |
11005 | ||
11006 | /* When multi-process extensions are off, there's no way in the | |
11007 | remote protocol to know the remote process id, if there's any | |
11008 | at all. There's one exception --- when we're connected with | |
11009 | target extended-remote, and we manually attached to a process | |
11010 | with "attach PID". We don't record anywhere a flag that | |
11011 | allows us to distinguish that case from the case of | |
11012 | connecting with extended-remote and the stub already being | |
11013 | attached to a process, and reporting yes to qAttached, hence | |
11014 | no smart special casing here. */ | |
11015 | if (!remote_multi_process_p (rs)) | |
11016 | { | |
11017 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11018 | return buf; | |
11019 | } | |
11020 | ||
11021 | return normal_pid_to_str (ptid); | |
82f73884 | 11022 | } |
ecd0ada5 | 11023 | else |
79d7f229 | 11024 | { |
ecd0ada5 PA |
11025 | if (ptid_equal (magic_null_ptid, ptid)) |
11026 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11027 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11028 | if (ptid_get_lwp (ptid) == 0) |
11029 | return normal_pid_to_str (ptid); | |
11030 | else | |
11031 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11032 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11033 | else |
11034 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11035 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11036 | return buf; |
11037 | } | |
f3fb8c85 MS |
11038 | } |
11039 | ||
38691318 KB |
11040 | /* Get the address of the thread local variable in OBJFILE which is |
11041 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11042 | ||
11043 | static CORE_ADDR | |
117de6a9 PA |
11044 | remote_get_thread_local_address (struct target_ops *ops, |
11045 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 11046 | { |
4082afcc | 11047 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11048 | { |
11049 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11050 | char *p = rs->buf; |
82f73884 | 11051 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11052 | enum packet_result result; |
38691318 KB |
11053 | |
11054 | strcpy (p, "qGetTLSAddr:"); | |
11055 | p += strlen (p); | |
82f73884 | 11056 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11057 | *p++ = ','; |
11058 | p += hexnumstr (p, offset); | |
11059 | *p++ = ','; | |
11060 | p += hexnumstr (p, lm); | |
11061 | *p++ = '\0'; | |
11062 | ||
6d820c5c DJ |
11063 | putpkt (rs->buf); |
11064 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11065 | result = packet_ok (rs->buf, |
11066 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11067 | if (result == PACKET_OK) |
38691318 KB |
11068 | { |
11069 | ULONGEST result; | |
11070 | ||
6d820c5c | 11071 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11072 | return result; |
11073 | } | |
571dd617 | 11074 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11075 | throw_error (TLS_GENERIC_ERROR, |
11076 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11077 | else |
109c3e39 AC |
11078 | throw_error (TLS_GENERIC_ERROR, |
11079 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11080 | } |
11081 | else | |
109c3e39 AC |
11082 | throw_error (TLS_GENERIC_ERROR, |
11083 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11084 | /* Not reached. */ |
11085 | return 0; | |
11086 | } | |
11087 | ||
711e434b PM |
11088 | /* Provide thread local base, i.e. Thread Information Block address. |
11089 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11090 | ||
70221824 | 11091 | static int |
bd7ae0f5 | 11092 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11093 | { |
4082afcc | 11094 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11095 | { |
11096 | struct remote_state *rs = get_remote_state (); | |
11097 | char *p = rs->buf; | |
11098 | char *endp = rs->buf + get_remote_packet_size (); | |
11099 | enum packet_result result; | |
11100 | ||
11101 | strcpy (p, "qGetTIBAddr:"); | |
11102 | p += strlen (p); | |
11103 | p = write_ptid (p, endp, ptid); | |
11104 | *p++ = '\0'; | |
11105 | ||
11106 | putpkt (rs->buf); | |
11107 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11108 | result = packet_ok (rs->buf, | |
11109 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11110 | if (result == PACKET_OK) | |
11111 | { | |
11112 | ULONGEST result; | |
11113 | ||
11114 | unpack_varlen_hex (rs->buf, &result); | |
11115 | if (addr) | |
11116 | *addr = (CORE_ADDR) result; | |
11117 | return 1; | |
11118 | } | |
11119 | else if (result == PACKET_UNKNOWN) | |
11120 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11121 | else | |
11122 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11123 | } | |
11124 | else | |
11125 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11126 | /* Not reached. */ | |
11127 | return 0; | |
11128 | } | |
11129 | ||
29709017 DJ |
11130 | /* Support for inferring a target description based on the current |
11131 | architecture and the size of a 'g' packet. While the 'g' packet | |
11132 | can have any size (since optional registers can be left off the | |
11133 | end), some sizes are easily recognizable given knowledge of the | |
11134 | approximate architecture. */ | |
11135 | ||
11136 | struct remote_g_packet_guess | |
11137 | { | |
11138 | int bytes; | |
11139 | const struct target_desc *tdesc; | |
11140 | }; | |
11141 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11142 | DEF_VEC_O(remote_g_packet_guess_s); | |
11143 | ||
11144 | struct remote_g_packet_data | |
11145 | { | |
11146 | VEC(remote_g_packet_guess_s) *guesses; | |
11147 | }; | |
11148 | ||
11149 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11150 | ||
11151 | static void * | |
11152 | remote_g_packet_data_init (struct obstack *obstack) | |
11153 | { | |
11154 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11155 | } | |
11156 | ||
11157 | void | |
11158 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11159 | const struct target_desc *tdesc) | |
11160 | { | |
11161 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11162 | = ((struct remote_g_packet_data *) |
11163 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11164 | struct remote_g_packet_guess new_guess, *guess; |
11165 | int ix; | |
11166 | ||
11167 | gdb_assert (tdesc != NULL); | |
11168 | ||
11169 | for (ix = 0; | |
11170 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11171 | ix++) | |
11172 | if (guess->bytes == bytes) | |
11173 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11174 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11175 | bytes); |
11176 | ||
11177 | new_guess.bytes = bytes; | |
11178 | new_guess.tdesc = tdesc; | |
11179 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11180 | } | |
11181 | ||
d962ef82 DJ |
11182 | /* Return 1 if remote_read_description would do anything on this target |
11183 | and architecture, 0 otherwise. */ | |
11184 | ||
11185 | static int | |
11186 | remote_read_description_p (struct target_ops *target) | |
11187 | { | |
11188 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11189 | = ((struct remote_g_packet_data *) |
11190 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11191 | |
11192 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11193 | return 1; | |
11194 | ||
11195 | return 0; | |
11196 | } | |
11197 | ||
29709017 DJ |
11198 | static const struct target_desc * |
11199 | remote_read_description (struct target_ops *target) | |
11200 | { | |
11201 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11202 | = ((struct remote_g_packet_data *) |
11203 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11204 | |
d962ef82 DJ |
11205 | /* Do not try this during initial connection, when we do not know |
11206 | whether there is a running but stopped thread. */ | |
11207 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 11208 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 11209 | |
29709017 DJ |
11210 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11211 | { | |
11212 | struct remote_g_packet_guess *guess; | |
11213 | int ix; | |
11214 | int bytes = send_g_packet (); | |
11215 | ||
11216 | for (ix = 0; | |
11217 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11218 | ix++) | |
11219 | if (guess->bytes == bytes) | |
11220 | return guess->tdesc; | |
11221 | ||
11222 | /* We discard the g packet. A minor optimization would be to | |
11223 | hold on to it, and fill the register cache once we have selected | |
11224 | an architecture, but it's too tricky to do safely. */ | |
11225 | } | |
11226 | ||
2117c711 | 11227 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
11228 | } |
11229 | ||
a6b151f1 DJ |
11230 | /* Remote file transfer support. This is host-initiated I/O, not |
11231 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11232 | ||
11233 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11234 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11235 | decrease *LEFT. Otherwise raise an error. */ | |
11236 | ||
11237 | static void | |
a121b7c1 | 11238 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11239 | { |
11240 | int len = strlen (string); | |
11241 | ||
11242 | if (len > *left) | |
11243 | error (_("Packet too long for target.")); | |
11244 | ||
11245 | memcpy (*buffer, string, len); | |
11246 | *buffer += len; | |
11247 | *left -= len; | |
11248 | ||
11249 | /* NUL-terminate the buffer as a convenience, if there is | |
11250 | room. */ | |
11251 | if (*left) | |
11252 | **buffer = '\0'; | |
11253 | } | |
11254 | ||
11255 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11256 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11257 | decrease *LEFT. Otherwise raise an error. */ | |
11258 | ||
11259 | static void | |
11260 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11261 | int len) | |
11262 | { | |
11263 | if (2 * len > *left) | |
11264 | error (_("Packet too long for target.")); | |
11265 | ||
11266 | bin2hex (bytes, *buffer, len); | |
11267 | *buffer += 2 * len; | |
11268 | *left -= 2 * len; | |
11269 | ||
11270 | /* NUL-terminate the buffer as a convenience, if there is | |
11271 | room. */ | |
11272 | if (*left) | |
11273 | **buffer = '\0'; | |
11274 | } | |
11275 | ||
11276 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11277 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11278 | decrease *LEFT. Otherwise raise an error. */ | |
11279 | ||
11280 | static void | |
11281 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11282 | { | |
11283 | int len = hexnumlen (value); | |
11284 | ||
11285 | if (len > *left) | |
11286 | error (_("Packet too long for target.")); | |
11287 | ||
11288 | hexnumstr (*buffer, value); | |
11289 | *buffer += len; | |
11290 | *left -= len; | |
11291 | ||
11292 | /* NUL-terminate the buffer as a convenience, if there is | |
11293 | room. */ | |
11294 | if (*left) | |
11295 | **buffer = '\0'; | |
11296 | } | |
11297 | ||
11298 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11299 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11300 | was included, and *ATTACHMENT to point to the start of the annex | |
11301 | if any. The length of the packet isn't needed here; there may | |
11302 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11303 | ||
11304 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11305 | -1 is returned, the other variables may not be initialized. */ | |
11306 | ||
11307 | static int | |
11308 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11309 | int *remote_errno, char **attachment) | |
11310 | { | |
11311 | char *p, *p2; | |
11312 | ||
11313 | *remote_errno = 0; | |
11314 | *attachment = NULL; | |
11315 | ||
11316 | if (buffer[0] != 'F') | |
11317 | return -1; | |
11318 | ||
11319 | errno = 0; | |
11320 | *retcode = strtol (&buffer[1], &p, 16); | |
11321 | if (errno != 0 || p == &buffer[1]) | |
11322 | return -1; | |
11323 | ||
11324 | /* Check for ",errno". */ | |
11325 | if (*p == ',') | |
11326 | { | |
11327 | errno = 0; | |
11328 | *remote_errno = strtol (p + 1, &p2, 16); | |
11329 | if (errno != 0 || p + 1 == p2) | |
11330 | return -1; | |
11331 | p = p2; | |
11332 | } | |
11333 | ||
11334 | /* Check for ";attachment". If there is no attachment, the | |
11335 | packet should end here. */ | |
11336 | if (*p == ';') | |
11337 | { | |
11338 | *attachment = p + 1; | |
11339 | return 0; | |
11340 | } | |
11341 | else if (*p == '\0') | |
11342 | return 0; | |
11343 | else | |
11344 | return -1; | |
11345 | } | |
11346 | ||
11347 | /* Send a prepared I/O packet to the target and read its response. | |
11348 | The prepared packet is in the global RS->BUF before this function | |
11349 | is called, and the answer is there when we return. | |
11350 | ||
11351 | COMMAND_BYTES is the length of the request to send, which may include | |
11352 | binary data. WHICH_PACKET is the packet configuration to check | |
11353 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11354 | is set to the error number and -1 is returned. Otherwise the value | |
11355 | returned by the function is returned. | |
11356 | ||
11357 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11358 | attachment is expected; an error will be reported if there's a | |
11359 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11360 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11361 | attachment's length. */ | |
11362 | ||
11363 | static int | |
11364 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11365 | int *remote_errno, char **attachment, | |
11366 | int *attachment_len) | |
11367 | { | |
11368 | struct remote_state *rs = get_remote_state (); | |
11369 | int ret, bytes_read; | |
11370 | char *attachment_tmp; | |
11371 | ||
5d93a237 | 11372 | if (!rs->remote_desc |
4082afcc | 11373 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11374 | { |
11375 | *remote_errno = FILEIO_ENOSYS; | |
11376 | return -1; | |
11377 | } | |
11378 | ||
11379 | putpkt_binary (rs->buf, command_bytes); | |
11380 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11381 | ||
11382 | /* If it timed out, something is wrong. Don't try to parse the | |
11383 | buffer. */ | |
11384 | if (bytes_read < 0) | |
11385 | { | |
11386 | *remote_errno = FILEIO_EINVAL; | |
11387 | return -1; | |
11388 | } | |
11389 | ||
11390 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11391 | { | |
11392 | case PACKET_ERROR: | |
11393 | *remote_errno = FILEIO_EINVAL; | |
11394 | return -1; | |
11395 | case PACKET_UNKNOWN: | |
11396 | *remote_errno = FILEIO_ENOSYS; | |
11397 | return -1; | |
11398 | case PACKET_OK: | |
11399 | break; | |
11400 | } | |
11401 | ||
11402 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11403 | &attachment_tmp)) | |
11404 | { | |
11405 | *remote_errno = FILEIO_EINVAL; | |
11406 | return -1; | |
11407 | } | |
11408 | ||
11409 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11410 | if ((attachment_tmp == NULL && attachment != NULL) | |
11411 | || (attachment_tmp != NULL && attachment == NULL)) | |
11412 | { | |
11413 | *remote_errno = FILEIO_EINVAL; | |
11414 | return -1; | |
11415 | } | |
11416 | ||
11417 | /* If an attachment was found, it must point into the packet buffer; | |
11418 | work out how many bytes there were. */ | |
11419 | if (attachment_tmp != NULL) | |
11420 | { | |
11421 | *attachment = attachment_tmp; | |
11422 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11423 | } | |
11424 | ||
11425 | return ret; | |
11426 | } | |
11427 | ||
80152258 PA |
11428 | /* Invalidate the readahead cache. */ |
11429 | ||
11430 | static void | |
11431 | readahead_cache_invalidate (void) | |
11432 | { | |
11433 | struct remote_state *rs = get_remote_state (); | |
11434 | ||
11435 | rs->readahead_cache.fd = -1; | |
11436 | } | |
11437 | ||
11438 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
11439 | ||
11440 | static void | |
11441 | readahead_cache_invalidate_fd (int fd) | |
11442 | { | |
11443 | struct remote_state *rs = get_remote_state (); | |
11444 | ||
11445 | if (rs->readahead_cache.fd == fd) | |
11446 | rs->readahead_cache.fd = -1; | |
11447 | } | |
11448 | ||
15a201c8 GB |
11449 | /* Set the filesystem remote_hostio functions that take FILENAME |
11450 | arguments will use. Return 0 on success, or -1 if an error | |
11451 | occurs (and set *REMOTE_ERRNO). */ | |
11452 | ||
11453 | static int | |
11454 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11455 | { | |
11456 | struct remote_state *rs = get_remote_state (); | |
11457 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11458 | char *p = rs->buf; | |
11459 | int left = get_remote_packet_size () - 1; | |
11460 | char arg[9]; | |
11461 | int ret; | |
11462 | ||
11463 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11464 | return 0; | |
11465 | ||
11466 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11467 | return 0; | |
11468 | ||
11469 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11470 | ||
11471 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11472 | remote_buffer_add_string (&p, &left, arg); | |
11473 | ||
11474 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11475 | remote_errno, NULL, NULL); | |
11476 | ||
11477 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11478 | return 0; | |
11479 | ||
11480 | if (ret == 0) | |
11481 | rs->fs_pid = required_pid; | |
11482 | ||
11483 | return ret; | |
11484 | } | |
11485 | ||
12e2a5fd | 11486 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11487 | |
11488 | static int | |
cd897586 | 11489 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11490 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11491 | int flags, int mode, int warn_if_slow, |
11492 | int *remote_errno) | |
a6b151f1 DJ |
11493 | { |
11494 | struct remote_state *rs = get_remote_state (); | |
11495 | char *p = rs->buf; | |
11496 | int left = get_remote_packet_size () - 1; | |
11497 | ||
4313b8c0 GB |
11498 | if (warn_if_slow) |
11499 | { | |
11500 | static int warning_issued = 0; | |
11501 | ||
11502 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11503 | filename); | |
11504 | ||
11505 | if (!warning_issued) | |
11506 | { | |
11507 | warning (_("File transfers from remote targets can be slow." | |
11508 | " Use \"set sysroot\" to access files locally" | |
11509 | " instead.")); | |
11510 | warning_issued = 1; | |
11511 | } | |
11512 | } | |
11513 | ||
15a201c8 GB |
11514 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11515 | return -1; | |
11516 | ||
a6b151f1 DJ |
11517 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11518 | ||
11519 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11520 | strlen (filename)); | |
11521 | remote_buffer_add_string (&p, &left, ","); | |
11522 | ||
11523 | remote_buffer_add_int (&p, &left, flags); | |
11524 | remote_buffer_add_string (&p, &left, ","); | |
11525 | ||
11526 | remote_buffer_add_int (&p, &left, mode); | |
11527 | ||
11528 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11529 | remote_errno, NULL, NULL); | |
11530 | } | |
11531 | ||
12e2a5fd | 11532 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11533 | |
11534 | static int | |
0d866f62 TT |
11535 | remote_hostio_pwrite (struct target_ops *self, |
11536 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11537 | ULONGEST offset, int *remote_errno) |
11538 | { | |
11539 | struct remote_state *rs = get_remote_state (); | |
11540 | char *p = rs->buf; | |
11541 | int left = get_remote_packet_size (); | |
11542 | int out_len; | |
11543 | ||
80152258 PA |
11544 | readahead_cache_invalidate_fd (fd); |
11545 | ||
a6b151f1 DJ |
11546 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11547 | ||
11548 | remote_buffer_add_int (&p, &left, fd); | |
11549 | remote_buffer_add_string (&p, &left, ","); | |
11550 | ||
11551 | remote_buffer_add_int (&p, &left, offset); | |
11552 | remote_buffer_add_string (&p, &left, ","); | |
11553 | ||
124e13d9 | 11554 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11555 | get_remote_packet_size () - (p - rs->buf)); |
11556 | ||
11557 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11558 | remote_errno, NULL, NULL); | |
11559 | } | |
11560 | ||
80152258 PA |
11561 | /* Helper for the implementation of to_fileio_pread. Read the file |
11562 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11563 | |
11564 | static int | |
80152258 PA |
11565 | remote_hostio_pread_vFile (struct target_ops *self, |
11566 | int fd, gdb_byte *read_buf, int len, | |
11567 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11568 | { |
11569 | struct remote_state *rs = get_remote_state (); | |
11570 | char *p = rs->buf; | |
11571 | char *attachment; | |
11572 | int left = get_remote_packet_size (); | |
11573 | int ret, attachment_len; | |
11574 | int read_len; | |
11575 | ||
11576 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11577 | ||
11578 | remote_buffer_add_int (&p, &left, fd); | |
11579 | remote_buffer_add_string (&p, &left, ","); | |
11580 | ||
11581 | remote_buffer_add_int (&p, &left, len); | |
11582 | remote_buffer_add_string (&p, &left, ","); | |
11583 | ||
11584 | remote_buffer_add_int (&p, &left, offset); | |
11585 | ||
11586 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11587 | remote_errno, &attachment, | |
11588 | &attachment_len); | |
11589 | ||
11590 | if (ret < 0) | |
11591 | return ret; | |
11592 | ||
bc20a4af | 11593 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11594 | read_buf, len); |
11595 | if (read_len != ret) | |
11596 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11597 | ||
11598 | return ret; | |
11599 | } | |
11600 | ||
80152258 PA |
11601 | /* Serve pread from the readahead cache. Returns number of bytes |
11602 | read, or 0 if the request can't be served from the cache. */ | |
11603 | ||
11604 | static int | |
11605 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11606 | int fd, gdb_byte *read_buf, size_t len, | |
11607 | ULONGEST offset) | |
11608 | { | |
11609 | struct readahead_cache *cache = &rs->readahead_cache; | |
11610 | ||
11611 | if (cache->fd == fd | |
11612 | && cache->offset <= offset | |
11613 | && offset < cache->offset + cache->bufsize) | |
11614 | { | |
11615 | ULONGEST max = cache->offset + cache->bufsize; | |
11616 | ||
11617 | if (offset + len > max) | |
11618 | len = max - offset; | |
11619 | ||
11620 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11621 | return len; | |
11622 | } | |
11623 | ||
11624 | return 0; | |
11625 | } | |
11626 | ||
11627 | /* Implementation of to_fileio_pread. */ | |
11628 | ||
11629 | static int | |
11630 | remote_hostio_pread (struct target_ops *self, | |
11631 | int fd, gdb_byte *read_buf, int len, | |
11632 | ULONGEST offset, int *remote_errno) | |
11633 | { | |
11634 | int ret; | |
11635 | struct remote_state *rs = get_remote_state (); | |
11636 | struct readahead_cache *cache = &rs->readahead_cache; | |
11637 | ||
11638 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11639 | if (ret > 0) | |
11640 | { | |
11641 | cache->hit_count++; | |
11642 | ||
11643 | if (remote_debug) | |
11644 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11645 | pulongest (cache->hit_count)); | |
11646 | return ret; | |
11647 | } | |
11648 | ||
11649 | cache->miss_count++; | |
11650 | if (remote_debug) | |
11651 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11652 | pulongest (cache->miss_count)); | |
11653 | ||
11654 | cache->fd = fd; | |
11655 | cache->offset = offset; | |
11656 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11657 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11658 | |
11659 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11660 | cache->offset, remote_errno); | |
11661 | if (ret <= 0) | |
11662 | { | |
11663 | readahead_cache_invalidate_fd (fd); | |
11664 | return ret; | |
11665 | } | |
11666 | ||
11667 | cache->bufsize = ret; | |
11668 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11669 | } | |
11670 | ||
12e2a5fd | 11671 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11672 | |
11673 | static int | |
df39ea25 | 11674 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11675 | { |
11676 | struct remote_state *rs = get_remote_state (); | |
11677 | char *p = rs->buf; | |
11678 | int left = get_remote_packet_size () - 1; | |
11679 | ||
80152258 PA |
11680 | readahead_cache_invalidate_fd (fd); |
11681 | ||
a6b151f1 DJ |
11682 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11683 | ||
11684 | remote_buffer_add_int (&p, &left, fd); | |
11685 | ||
11686 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11687 | remote_errno, NULL, NULL); | |
11688 | } | |
11689 | ||
12e2a5fd | 11690 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11691 | |
11692 | static int | |
dbbca37d | 11693 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11694 | struct inferior *inf, const char *filename, |
11695 | int *remote_errno) | |
a6b151f1 DJ |
11696 | { |
11697 | struct remote_state *rs = get_remote_state (); | |
11698 | char *p = rs->buf; | |
11699 | int left = get_remote_packet_size () - 1; | |
11700 | ||
15a201c8 GB |
11701 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11702 | return -1; | |
11703 | ||
a6b151f1 DJ |
11704 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11705 | ||
11706 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11707 | strlen (filename)); | |
11708 | ||
11709 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11710 | remote_errno, NULL, NULL); | |
11711 | } | |
11712 | ||
12e2a5fd | 11713 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
11714 | |
11715 | static char * | |
fab5aa7c | 11716 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11717 | struct inferior *inf, const char *filename, |
11718 | int *remote_errno) | |
b9e7b9c3 UW |
11719 | { |
11720 | struct remote_state *rs = get_remote_state (); | |
11721 | char *p = rs->buf; | |
11722 | char *attachment; | |
11723 | int left = get_remote_packet_size (); | |
11724 | int len, attachment_len; | |
11725 | int read_len; | |
11726 | char *ret; | |
11727 | ||
15a201c8 GB |
11728 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11729 | return NULL; | |
11730 | ||
b9e7b9c3 UW |
11731 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11732 | ||
11733 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11734 | strlen (filename)); | |
11735 | ||
11736 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11737 | remote_errno, &attachment, | |
11738 | &attachment_len); | |
11739 | ||
11740 | if (len < 0) | |
11741 | return NULL; | |
11742 | ||
224c3ddb | 11743 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 11744 | |
bc20a4af PA |
11745 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11746 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
11747 | if (read_len != len) |
11748 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11749 | ||
11750 | ret[len] = '\0'; | |
11751 | return ret; | |
11752 | } | |
11753 | ||
12e2a5fd | 11754 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11755 | |
11756 | static int | |
11757 | remote_hostio_fstat (struct target_ops *self, | |
11758 | int fd, struct stat *st, | |
11759 | int *remote_errno) | |
11760 | { | |
11761 | struct remote_state *rs = get_remote_state (); | |
11762 | char *p = rs->buf; | |
11763 | int left = get_remote_packet_size (); | |
11764 | int attachment_len, ret; | |
11765 | char *attachment; | |
11766 | struct fio_stat fst; | |
11767 | int read_len; | |
11768 | ||
464b0089 GB |
11769 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11770 | ||
11771 | remote_buffer_add_int (&p, &left, fd); | |
11772 | ||
11773 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11774 | remote_errno, &attachment, | |
11775 | &attachment_len); | |
11776 | if (ret < 0) | |
0a93529c | 11777 | { |
464b0089 GB |
11778 | if (*remote_errno != FILEIO_ENOSYS) |
11779 | return ret; | |
11780 | ||
0a93529c GB |
11781 | /* Strictly we should return -1, ENOSYS here, but when |
11782 | "set sysroot remote:" was implemented in August 2008 | |
11783 | BFD's need for a stat function was sidestepped with | |
11784 | this hack. This was not remedied until March 2015 | |
11785 | so we retain the previous behavior to avoid breaking | |
11786 | compatibility. | |
11787 | ||
11788 | Note that the memset is a March 2015 addition; older | |
11789 | GDBs set st_size *and nothing else* so the structure | |
11790 | would have garbage in all other fields. This might | |
11791 | break something but retaining the previous behavior | |
11792 | here would be just too wrong. */ | |
11793 | ||
11794 | memset (st, 0, sizeof (struct stat)); | |
11795 | st->st_size = INT_MAX; | |
11796 | return 0; | |
11797 | } | |
11798 | ||
0a93529c GB |
11799 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11800 | (gdb_byte *) &fst, sizeof (fst)); | |
11801 | ||
11802 | if (read_len != ret) | |
11803 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11804 | ||
11805 | if (read_len != sizeof (fst)) | |
11806 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11807 | read_len, (int) sizeof (fst)); | |
11808 | ||
11809 | remote_fileio_to_host_stat (&fst, st); | |
11810 | ||
11811 | return 0; | |
11812 | } | |
11813 | ||
12e2a5fd | 11814 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11815 | |
11816 | static int | |
11817 | remote_filesystem_is_local (struct target_ops *self) | |
11818 | { | |
11819 | /* Valgrind GDB presents itself as a remote target but works | |
11820 | on the local filesystem: it does not implement remote get | |
11821 | and users are not expected to set a sysroot. To handle | |
11822 | this case we treat the remote filesystem as local if the | |
11823 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11824 | does not support vFile:open. */ | |
a3be80c3 | 11825 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11826 | { |
11827 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11828 | ||
11829 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11830 | { | |
11831 | int fd, remote_errno; | |
11832 | ||
11833 | /* Try opening a file to probe support. The supplied | |
11834 | filename is irrelevant, we only care about whether | |
11835 | the stub recognizes the packet or not. */ | |
07c138c8 | 11836 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11837 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11838 | &remote_errno); |
11839 | ||
11840 | if (fd >= 0) | |
11841 | remote_hostio_close (self, fd, &remote_errno); | |
11842 | ||
11843 | ps = packet_support (PACKET_vFile_open); | |
11844 | } | |
11845 | ||
11846 | if (ps == PACKET_DISABLE) | |
11847 | { | |
11848 | static int warning_issued = 0; | |
11849 | ||
11850 | if (!warning_issued) | |
11851 | { | |
11852 | warning (_("remote target does not support file" | |
11853 | " transfer, attempting to access files" | |
11854 | " from local filesystem.")); | |
11855 | warning_issued = 1; | |
11856 | } | |
11857 | ||
11858 | return 1; | |
11859 | } | |
11860 | } | |
11861 | ||
11862 | return 0; | |
11863 | } | |
11864 | ||
a6b151f1 DJ |
11865 | static int |
11866 | remote_fileio_errno_to_host (int errnum) | |
11867 | { | |
11868 | switch (errnum) | |
11869 | { | |
11870 | case FILEIO_EPERM: | |
11871 | return EPERM; | |
11872 | case FILEIO_ENOENT: | |
11873 | return ENOENT; | |
11874 | case FILEIO_EINTR: | |
11875 | return EINTR; | |
11876 | case FILEIO_EIO: | |
11877 | return EIO; | |
11878 | case FILEIO_EBADF: | |
11879 | return EBADF; | |
11880 | case FILEIO_EACCES: | |
11881 | return EACCES; | |
11882 | case FILEIO_EFAULT: | |
11883 | return EFAULT; | |
11884 | case FILEIO_EBUSY: | |
11885 | return EBUSY; | |
11886 | case FILEIO_EEXIST: | |
11887 | return EEXIST; | |
11888 | case FILEIO_ENODEV: | |
11889 | return ENODEV; | |
11890 | case FILEIO_ENOTDIR: | |
11891 | return ENOTDIR; | |
11892 | case FILEIO_EISDIR: | |
11893 | return EISDIR; | |
11894 | case FILEIO_EINVAL: | |
11895 | return EINVAL; | |
11896 | case FILEIO_ENFILE: | |
11897 | return ENFILE; | |
11898 | case FILEIO_EMFILE: | |
11899 | return EMFILE; | |
11900 | case FILEIO_EFBIG: | |
11901 | return EFBIG; | |
11902 | case FILEIO_ENOSPC: | |
11903 | return ENOSPC; | |
11904 | case FILEIO_ESPIPE: | |
11905 | return ESPIPE; | |
11906 | case FILEIO_EROFS: | |
11907 | return EROFS; | |
11908 | case FILEIO_ENOSYS: | |
11909 | return ENOSYS; | |
11910 | case FILEIO_ENAMETOOLONG: | |
11911 | return ENAMETOOLONG; | |
11912 | } | |
11913 | return -1; | |
11914 | } | |
11915 | ||
11916 | static char * | |
11917 | remote_hostio_error (int errnum) | |
11918 | { | |
11919 | int host_error = remote_fileio_errno_to_host (errnum); | |
11920 | ||
11921 | if (host_error == -1) | |
11922 | error (_("Unknown remote I/O error %d"), errnum); | |
11923 | else | |
11924 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11925 | } | |
11926 | ||
a6b151f1 DJ |
11927 | static void |
11928 | remote_hostio_close_cleanup (void *opaque) | |
11929 | { | |
11930 | int fd = *(int *) opaque; | |
11931 | int remote_errno; | |
11932 | ||
df39ea25 | 11933 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11934 | } |
11935 | ||
11936 | void | |
11937 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11938 | { | |
11939 | struct cleanup *back_to, *close_cleanup; | |
11940 | int retcode, fd, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
11941 | gdb_byte *buffer; |
11942 | int bytes_in_buffer; | |
11943 | int saw_eof; | |
11944 | ULONGEST offset; | |
5d93a237 | 11945 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11946 | |
5d93a237 | 11947 | if (!rs->remote_desc) |
a6b151f1 DJ |
11948 | error (_("command can only be used with remote target")); |
11949 | ||
d419f42d | 11950 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11951 | if (file == NULL) |
11952 | perror_with_name (local_file); | |
a6b151f1 | 11953 | |
07c138c8 | 11954 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11955 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11956 | | FILEIO_O_TRUNC), |
4313b8c0 | 11957 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11958 | if (fd == -1) |
11959 | remote_hostio_error (remote_errno); | |
11960 | ||
11961 | /* Send up to this many bytes at once. They won't all fit in the | |
11962 | remote packet limit, so we'll transfer slightly fewer. */ | |
11963 | io_size = get_remote_packet_size (); | |
224c3ddb | 11964 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 11965 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
11966 | |
11967 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11968 | ||
11969 | bytes_in_buffer = 0; | |
11970 | saw_eof = 0; | |
11971 | offset = 0; | |
11972 | while (bytes_in_buffer || !saw_eof) | |
11973 | { | |
11974 | if (!saw_eof) | |
11975 | { | |
3e43a32a MS |
11976 | bytes = fread (buffer + bytes_in_buffer, 1, |
11977 | io_size - bytes_in_buffer, | |
d419f42d | 11978 | file.get ()); |
a6b151f1 DJ |
11979 | if (bytes == 0) |
11980 | { | |
d419f42d | 11981 | if (ferror (file.get ())) |
a6b151f1 DJ |
11982 | error (_("Error reading %s."), local_file); |
11983 | else | |
11984 | { | |
11985 | /* EOF. Unless there is something still in the | |
11986 | buffer from the last iteration, we are done. */ | |
11987 | saw_eof = 1; | |
11988 | if (bytes_in_buffer == 0) | |
11989 | break; | |
11990 | } | |
11991 | } | |
11992 | } | |
11993 | else | |
11994 | bytes = 0; | |
11995 | ||
11996 | bytes += bytes_in_buffer; | |
11997 | bytes_in_buffer = 0; | |
11998 | ||
0d866f62 TT |
11999 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
12000 | fd, buffer, bytes, | |
3e43a32a | 12001 | offset, &remote_errno); |
a6b151f1 DJ |
12002 | |
12003 | if (retcode < 0) | |
12004 | remote_hostio_error (remote_errno); | |
12005 | else if (retcode == 0) | |
12006 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12007 | else if (retcode < bytes) | |
12008 | { | |
12009 | /* Short write. Save the rest of the read data for the next | |
12010 | write. */ | |
12011 | bytes_in_buffer = bytes - retcode; | |
12012 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
12013 | } | |
12014 | ||
12015 | offset += retcode; | |
12016 | } | |
12017 | ||
12018 | discard_cleanups (close_cleanup); | |
df39ea25 | 12019 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12020 | remote_hostio_error (remote_errno); |
12021 | ||
12022 | if (from_tty) | |
12023 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
12024 | do_cleanups (back_to); | |
12025 | } | |
12026 | ||
12027 | void | |
12028 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
12029 | { | |
12030 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 12031 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12032 | gdb_byte *buffer; |
12033 | ULONGEST offset; | |
5d93a237 | 12034 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12035 | |
5d93a237 | 12036 | if (!rs->remote_desc) |
a6b151f1 DJ |
12037 | error (_("command can only be used with remote target")); |
12038 | ||
07c138c8 | 12039 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
12040 | remote_file, FILEIO_O_RDONLY, 0, 0, |
12041 | &remote_errno); | |
a6b151f1 DJ |
12042 | if (fd == -1) |
12043 | remote_hostio_error (remote_errno); | |
12044 | ||
d419f42d | 12045 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12046 | if (file == NULL) |
12047 | perror_with_name (local_file); | |
a6b151f1 DJ |
12048 | |
12049 | /* Send up to this many bytes at once. They won't all fit in the | |
12050 | remote packet limit, so we'll transfer slightly fewer. */ | |
12051 | io_size = get_remote_packet_size (); | |
224c3ddb | 12052 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12053 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
12054 | |
12055 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
12056 | ||
12057 | offset = 0; | |
12058 | while (1) | |
12059 | { | |
a3be983c TT |
12060 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
12061 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
12062 | if (bytes == 0) |
12063 | /* Success, but no bytes, means end-of-file. */ | |
12064 | break; | |
12065 | if (bytes == -1) | |
12066 | remote_hostio_error (remote_errno); | |
12067 | ||
12068 | offset += bytes; | |
12069 | ||
d419f42d | 12070 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12071 | if (bytes == 0) |
12072 | perror_with_name (local_file); | |
12073 | } | |
12074 | ||
12075 | discard_cleanups (close_cleanup); | |
df39ea25 | 12076 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12077 | remote_hostio_error (remote_errno); |
12078 | ||
12079 | if (from_tty) | |
12080 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12081 | do_cleanups (back_to); | |
12082 | } | |
12083 | ||
12084 | void | |
12085 | remote_file_delete (const char *remote_file, int from_tty) | |
12086 | { | |
12087 | int retcode, remote_errno; | |
5d93a237 | 12088 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12089 | |
5d93a237 | 12090 | if (!rs->remote_desc) |
a6b151f1 DJ |
12091 | error (_("command can only be used with remote target")); |
12092 | ||
dbbca37d | 12093 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12094 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12095 | if (retcode == -1) |
12096 | remote_hostio_error (remote_errno); | |
12097 | ||
12098 | if (from_tty) | |
12099 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12100 | } | |
12101 | ||
12102 | static void | |
12103 | remote_put_command (char *args, int from_tty) | |
12104 | { | |
d1a41061 PP |
12105 | if (args == NULL) |
12106 | error_no_arg (_("file to put")); | |
12107 | ||
773a1edc | 12108 | gdb_argv argv (args); |
a6b151f1 DJ |
12109 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12110 | error (_("Invalid parameters to remote put")); | |
12111 | ||
12112 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12113 | } |
12114 | ||
12115 | static void | |
12116 | remote_get_command (char *args, int from_tty) | |
12117 | { | |
d1a41061 PP |
12118 | if (args == NULL) |
12119 | error_no_arg (_("file to get")); | |
12120 | ||
773a1edc | 12121 | gdb_argv argv (args); |
a6b151f1 DJ |
12122 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12123 | error (_("Invalid parameters to remote get")); | |
12124 | ||
12125 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12126 | } |
12127 | ||
12128 | static void | |
12129 | remote_delete_command (char *args, int from_tty) | |
12130 | { | |
d1a41061 PP |
12131 | if (args == NULL) |
12132 | error_no_arg (_("file to delete")); | |
12133 | ||
773a1edc | 12134 | gdb_argv argv (args); |
a6b151f1 DJ |
12135 | if (argv[0] == NULL || argv[1] != NULL) |
12136 | error (_("Invalid parameters to remote delete")); | |
12137 | ||
12138 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12139 | } |
12140 | ||
12141 | static void | |
12142 | remote_command (char *args, int from_tty) | |
12143 | { | |
635c7e8a | 12144 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12145 | } |
12146 | ||
b2175913 | 12147 | static int |
19db3e69 | 12148 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 12149 | { |
4082afcc PA |
12150 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12151 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
12152 | return 1; |
12153 | else | |
12154 | return 0; | |
b2175913 MS |
12155 | } |
12156 | ||
74531fed | 12157 | static int |
2a9a2795 | 12158 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
12159 | { |
12160 | return 1; | |
12161 | } | |
12162 | ||
03583c20 | 12163 | static int |
2bfc0540 | 12164 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
12165 | { |
12166 | /* Only supported in extended mode. */ | |
12167 | return 0; | |
12168 | } | |
12169 | ||
8a305172 | 12170 | static int |
86ce2668 | 12171 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
12172 | { |
12173 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12174 | |
8020350c | 12175 | return remote_multi_process_p (rs); |
8a305172 PA |
12176 | } |
12177 | ||
70221824 | 12178 | static int |
782b2b07 SS |
12179 | remote_supports_cond_tracepoints (void) |
12180 | { | |
4082afcc | 12181 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12182 | } |
12183 | ||
3788aec7 | 12184 | static int |
efcc2da7 | 12185 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 12186 | { |
4082afcc | 12187 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12188 | } |
12189 | ||
70221824 | 12190 | static int |
7a697b8d SS |
12191 | remote_supports_fast_tracepoints (void) |
12192 | { | |
4082afcc | 12193 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12194 | } |
12195 | ||
0fb4aa4b PA |
12196 | static int |
12197 | remote_supports_static_tracepoints (void) | |
12198 | { | |
4082afcc | 12199 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12200 | } |
12201 | ||
1e4d1764 YQ |
12202 | static int |
12203 | remote_supports_install_in_trace (void) | |
12204 | { | |
4082afcc | 12205 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12206 | } |
12207 | ||
d248b706 | 12208 | static int |
7d178d6a | 12209 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 12210 | { |
4082afcc PA |
12211 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12212 | == PACKET_ENABLE); | |
d248b706 KY |
12213 | } |
12214 | ||
3065dfb6 | 12215 | static int |
6de37a3a | 12216 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 12217 | { |
4082afcc | 12218 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12219 | } |
12220 | ||
d3ce09f5 | 12221 | static int |
78eff0ec | 12222 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 12223 | { |
4082afcc | 12224 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12225 | } |
12226 | ||
35b1e5cc | 12227 | static void |
ecae04e1 | 12228 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
12229 | { |
12230 | putpkt ("QTinit"); | |
12231 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 12232 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
12233 | error (_("Target does not support this command.")); |
12234 | } | |
12235 | ||
12236 | static void free_actions_list (char **actions_list); | |
12237 | static void free_actions_list_cleanup_wrapper (void *); | |
12238 | static void | |
12239 | free_actions_list_cleanup_wrapper (void *al) | |
12240 | { | |
19ba03f4 | 12241 | free_actions_list ((char **) al); |
35b1e5cc SS |
12242 | } |
12243 | ||
12244 | static void | |
12245 | free_actions_list (char **actions_list) | |
12246 | { | |
12247 | int ndx; | |
12248 | ||
12249 | if (actions_list == 0) | |
12250 | return; | |
12251 | ||
12252 | for (ndx = 0; actions_list[ndx]; ndx++) | |
12253 | xfree (actions_list[ndx]); | |
12254 | ||
12255 | xfree (actions_list); | |
12256 | } | |
12257 | ||
409873ef SS |
12258 | /* Recursive routine to walk through command list including loops, and |
12259 | download packets for each command. */ | |
12260 | ||
12261 | static void | |
12262 | remote_download_command_source (int num, ULONGEST addr, | |
12263 | struct command_line *cmds) | |
12264 | { | |
12265 | struct remote_state *rs = get_remote_state (); | |
12266 | struct command_line *cmd; | |
12267 | ||
12268 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12269 | { | |
0df8b418 | 12270 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12271 | strcpy (rs->buf, "QTDPsrc:"); |
12272 | encode_source_string (num, addr, "cmd", cmd->line, | |
12273 | rs->buf + strlen (rs->buf), | |
12274 | rs->buf_size - strlen (rs->buf)); | |
12275 | putpkt (rs->buf); | |
12276 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12277 | if (strcmp (target_buf, "OK")) | |
12278 | warning (_("Target does not support source download.")); | |
12279 | ||
12280 | if (cmd->control_type == while_control | |
12281 | || cmd->control_type == while_stepping_control) | |
12282 | { | |
12283 | remote_download_command_source (num, addr, *cmd->body_list); | |
12284 | ||
0df8b418 | 12285 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12286 | strcpy (rs->buf, "QTDPsrc:"); |
12287 | encode_source_string (num, addr, "cmd", "end", | |
12288 | rs->buf + strlen (rs->buf), | |
12289 | rs->buf_size - strlen (rs->buf)); | |
12290 | putpkt (rs->buf); | |
12291 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12292 | if (strcmp (target_buf, "OK")) | |
12293 | warning (_("Target does not support source download.")); | |
12294 | } | |
12295 | } | |
12296 | } | |
12297 | ||
35b1e5cc | 12298 | static void |
548f7808 | 12299 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 12300 | { |
bba74b36 | 12301 | #define BUF_SIZE 2048 |
e8ba3115 | 12302 | |
35b1e5cc | 12303 | CORE_ADDR tpaddr; |
409873ef | 12304 | char addrbuf[40]; |
bba74b36 | 12305 | char buf[BUF_SIZE]; |
35b1e5cc SS |
12306 | char **tdp_actions; |
12307 | char **stepping_actions; | |
12308 | int ndx; | |
12309 | struct cleanup *old_chain = NULL; | |
35b1e5cc | 12310 | char *pkt; |
e8ba3115 | 12311 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12312 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 12313 | |
dc673c81 | 12314 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12315 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
12316 | tdp_actions); | |
12317 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
12318 | stepping_actions); | |
12319 | ||
12320 | tpaddr = loc->address; | |
12321 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12322 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12323 | addrbuf, /* address */ | |
12324 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12325 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12326 | /* Fast tracepoints are mostly handled by the target, but we can |
12327 | tell the target how big of an instruction block should be moved | |
12328 | around. */ | |
12329 | if (b->type == bp_fast_tracepoint) | |
12330 | { | |
12331 | /* Only test for support at download time; we may not know | |
12332 | target capabilities at definition time. */ | |
12333 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12334 | { |
6b940e6a PL |
12335 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12336 | NULL)) | |
bba74b36 | 12337 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12338 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12339 | else |
e8ba3115 YQ |
12340 | /* If it passed validation at definition but fails now, |
12341 | something is very wrong. */ | |
12342 | internal_error (__FILE__, __LINE__, | |
12343 | _("Fast tracepoint not " | |
12344 | "valid during download")); | |
35b1e5cc | 12345 | } |
e8ba3115 YQ |
12346 | else |
12347 | /* Fast tracepoints are functionally identical to regular | |
12348 | tracepoints, so don't take lack of support as a reason to | |
12349 | give up on the trace run. */ | |
12350 | warning (_("Target does not support fast tracepoints, " | |
12351 | "downloading %d as regular tracepoint"), b->number); | |
12352 | } | |
12353 | else if (b->type == bp_static_tracepoint) | |
12354 | { | |
12355 | /* Only test for support at download time; we may not know | |
12356 | target capabilities at definition time. */ | |
12357 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12358 | { |
e8ba3115 | 12359 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12360 | |
e8ba3115 YQ |
12361 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12362 | strcat (buf, ":S"); | |
0fb4aa4b | 12363 | else |
e8ba3115 | 12364 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12365 | } |
e8ba3115 YQ |
12366 | else |
12367 | /* Fast tracepoints are functionally identical to regular | |
12368 | tracepoints, so don't take lack of support as a reason | |
12369 | to give up on the trace run. */ | |
12370 | error (_("Target does not support static tracepoints")); | |
12371 | } | |
12372 | /* If the tracepoint has a conditional, make it into an agent | |
12373 | expression and append to the definition. */ | |
12374 | if (loc->cond) | |
12375 | { | |
12376 | /* Only test support at download time, we may not know target | |
12377 | capabilities at definition time. */ | |
12378 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12379 | { |
833177a4 | 12380 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12381 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12382 | aexpr->len); | |
e8ba3115 YQ |
12383 | pkt = buf + strlen (buf); |
12384 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
12385 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
12386 | *pkt = '\0'; | |
35b1e5cc | 12387 | } |
e8ba3115 YQ |
12388 | else |
12389 | warning (_("Target does not support conditional tracepoints, " | |
12390 | "ignoring tp %d cond"), b->number); | |
12391 | } | |
35b1e5cc | 12392 | |
d9b3f62e | 12393 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12394 | strcat (buf, "-"); |
12395 | putpkt (buf); | |
12396 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12397 | if (strcmp (target_buf, "OK")) | |
12398 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 12399 | |
e8ba3115 YQ |
12400 | /* do_single_steps (t); */ |
12401 | if (tdp_actions) | |
12402 | { | |
12403 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 12404 | { |
e8ba3115 | 12405 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12406 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
12407 | b->number, addrbuf, /* address */ | |
12408 | tdp_actions[ndx], | |
12409 | ((tdp_actions[ndx + 1] || stepping_actions) | |
12410 | ? '-' : 0)); | |
e8ba3115 YQ |
12411 | putpkt (buf); |
12412 | remote_get_noisy_reply (&target_buf, | |
12413 | &target_buf_size); | |
12414 | if (strcmp (target_buf, "OK")) | |
12415 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12416 | } |
e8ba3115 YQ |
12417 | } |
12418 | if (stepping_actions) | |
12419 | { | |
12420 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 12421 | { |
e8ba3115 | 12422 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12423 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
12424 | b->number, addrbuf, /* address */ | |
12425 | ((ndx == 0) ? "S" : ""), | |
12426 | stepping_actions[ndx], | |
12427 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
12428 | putpkt (buf); |
12429 | remote_get_noisy_reply (&target_buf, | |
12430 | &target_buf_size); | |
12431 | if (strcmp (target_buf, "OK")) | |
12432 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12433 | } |
e8ba3115 | 12434 | } |
409873ef | 12435 | |
4082afcc | 12436 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12437 | { |
f00aae0f | 12438 | if (b->location != NULL) |
409873ef | 12439 | { |
e8ba3115 | 12440 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12441 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12442 | event_location_to_string (b->location.get ()), |
f00aae0f | 12443 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 YQ |
12444 | putpkt (buf); |
12445 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12446 | if (strcmp (target_buf, "OK")) | |
12447 | warning (_("Target does not support source download.")); | |
409873ef | 12448 | } |
e8ba3115 YQ |
12449 | if (b->cond_string) |
12450 | { | |
12451 | strcpy (buf, "QTDPsrc:"); | |
12452 | encode_source_string (b->number, loc->address, | |
12453 | "cond", b->cond_string, buf + strlen (buf), | |
12454 | 2048 - strlen (buf)); | |
12455 | putpkt (buf); | |
12456 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12457 | if (strcmp (target_buf, "OK")) | |
12458 | warning (_("Target does not support source download.")); | |
12459 | } | |
12460 | remote_download_command_source (b->number, loc->address, | |
12461 | breakpoint_commands (b)); | |
35b1e5cc | 12462 | } |
e8ba3115 YQ |
12463 | |
12464 | do_cleanups (old_chain); | |
35b1e5cc SS |
12465 | } |
12466 | ||
1e4d1764 | 12467 | static int |
a52a8357 | 12468 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12469 | { |
1e51243a PA |
12470 | struct remote_state *rs = get_remote_state (); |
12471 | struct trace_status *ts; | |
12472 | int status; | |
12473 | ||
12474 | /* Don't try to install tracepoints until we've relocated our | |
12475 | symbols, and fetched and merged the target's tracepoint list with | |
12476 | ours. */ | |
12477 | if (rs->starting_up) | |
12478 | return 0; | |
12479 | ||
12480 | ts = current_trace_status (); | |
8bd200f1 | 12481 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12482 | |
12483 | if (status == -1 || !ts->running_known || !ts->running) | |
12484 | return 0; | |
12485 | ||
12486 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12487 | installing tracepoint in trace, we have to return. */ | |
12488 | if (!remote_supports_install_in_trace ()) | |
12489 | return 0; | |
12490 | ||
12491 | return 1; | |
12492 | } | |
12493 | ||
12494 | ||
35b1e5cc | 12495 | static void |
559d2b81 TT |
12496 | remote_download_trace_state_variable (struct target_ops *self, |
12497 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
12498 | { |
12499 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12500 | char *p; |
35b1e5cc | 12501 | |
bba74b36 YQ |
12502 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
12503 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
12504 | tsv->builtin); | |
00bf0b85 SS |
12505 | p = rs->buf + strlen (rs->buf); |
12506 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
12507 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 12508 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 12509 | *p++ = '\0'; |
35b1e5cc SS |
12510 | putpkt (rs->buf); |
12511 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12512 | if (*target_buf == '\0') |
12513 | error (_("Target does not support this command.")); | |
12514 | if (strcmp (target_buf, "OK") != 0) | |
12515 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
12516 | } |
12517 | ||
d248b706 | 12518 | static void |
46670d57 TT |
12519 | remote_enable_tracepoint (struct target_ops *self, |
12520 | struct bp_location *location) | |
d248b706 KY |
12521 | { |
12522 | struct remote_state *rs = get_remote_state (); | |
12523 | char addr_buf[40]; | |
12524 | ||
12525 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12526 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12527 | location->owner->number, addr_buf); | |
d248b706 KY |
12528 | putpkt (rs->buf); |
12529 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12530 | if (*rs->buf == '\0') | |
12531 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12532 | if (strcmp (rs->buf, "OK") != 0) | |
12533 | error (_("Error on target while enabling tracepoint.")); | |
12534 | } | |
12535 | ||
12536 | static void | |
780b049c TT |
12537 | remote_disable_tracepoint (struct target_ops *self, |
12538 | struct bp_location *location) | |
d248b706 KY |
12539 | { |
12540 | struct remote_state *rs = get_remote_state (); | |
12541 | char addr_buf[40]; | |
12542 | ||
12543 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12544 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12545 | location->owner->number, addr_buf); | |
d248b706 KY |
12546 | putpkt (rs->buf); |
12547 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12548 | if (*rs->buf == '\0') | |
12549 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12550 | if (strcmp (rs->buf, "OK") != 0) | |
12551 | error (_("Error on target while disabling tracepoint.")); | |
12552 | } | |
12553 | ||
35b1e5cc | 12554 | static void |
583f9a86 | 12555 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12556 | { |
12557 | asection *s; | |
81b9b86e | 12558 | bfd *abfd = NULL; |
35b1e5cc | 12559 | bfd_size_type size; |
608bcef2 | 12560 | bfd_vma vma; |
35b1e5cc | 12561 | int anysecs = 0; |
c2fa21f1 | 12562 | int offset = 0; |
35b1e5cc SS |
12563 | |
12564 | if (!exec_bfd) | |
12565 | return; /* No information to give. */ | |
12566 | ||
12567 | strcpy (target_buf, "QTro"); | |
9779ab84 | 12568 | offset = strlen (target_buf); |
35b1e5cc SS |
12569 | for (s = exec_bfd->sections; s; s = s->next) |
12570 | { | |
12571 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12572 | int sec_length; |
35b1e5cc SS |
12573 | |
12574 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12575 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12576 | (s->flags & SEC_READONLY) == 0) |
12577 | continue; | |
12578 | ||
12579 | anysecs = 1; | |
81b9b86e | 12580 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12581 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12582 | sprintf_vma (tmp1, vma); |
12583 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
12584 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
12585 | if (offset + sec_length + 1 > target_buf_size) | |
12586 | { | |
4082afcc | 12587 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12588 | warning (_("\ |
c2fa21f1 HZ |
12589 | Too many sections for read-only sections definition packet.")); |
12590 | break; | |
12591 | } | |
bba74b36 YQ |
12592 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
12593 | tmp1, tmp2); | |
c2fa21f1 | 12594 | offset += sec_length; |
35b1e5cc SS |
12595 | } |
12596 | if (anysecs) | |
12597 | { | |
12598 | putpkt (target_buf); | |
12599 | getpkt (&target_buf, &target_buf_size, 0); | |
12600 | } | |
12601 | } | |
12602 | ||
12603 | static void | |
e2d1aae3 | 12604 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
12605 | { |
12606 | putpkt ("QTStart"); | |
12607 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12608 | if (*target_buf == '\0') |
12609 | error (_("Target does not support this command.")); | |
12610 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12611 | error (_("Bogus reply from target: %s"), target_buf); |
12612 | } | |
12613 | ||
12614 | static int | |
8bd200f1 | 12615 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12616 | { |
953b98d1 | 12617 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12618 | char *p = NULL; |
0df8b418 | 12619 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12620 | extern int trace_regblock_size; |
bd3eecc3 PA |
12621 | enum packet_result result; |
12622 | ||
4082afcc | 12623 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12624 | return -1; |
a744cf53 | 12625 | |
00bf0b85 SS |
12626 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
12627 | ||
049dc89b JK |
12628 | putpkt ("qTStatus"); |
12629 | ||
492d29ea | 12630 | TRY |
67f41397 JK |
12631 | { |
12632 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12633 | } | |
492d29ea | 12634 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12635 | { |
598d3636 JK |
12636 | if (ex.error != TARGET_CLOSE_ERROR) |
12637 | { | |
12638 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12639 | return -1; | |
12640 | } | |
12641 | throw_exception (ex); | |
67f41397 | 12642 | } |
492d29ea | 12643 | END_CATCH |
00bf0b85 | 12644 | |
bd3eecc3 PA |
12645 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12646 | ||
00bf0b85 | 12647 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12648 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12649 | return -1; |
35b1e5cc | 12650 | |
00bf0b85 | 12651 | /* We're working with a live target. */ |
f5911ea1 | 12652 | ts->filename = NULL; |
00bf0b85 | 12653 | |
00bf0b85 | 12654 | if (*p++ != 'T') |
35b1e5cc SS |
12655 | error (_("Bogus trace status reply from target: %s"), target_buf); |
12656 | ||
84cebc4a YQ |
12657 | /* Function 'parse_trace_status' sets default value of each field of |
12658 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12659 | parse_trace_status (p, ts); |
12660 | ||
12661 | return ts->running; | |
35b1e5cc SS |
12662 | } |
12663 | ||
70221824 | 12664 | static void |
db90e85c | 12665 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12666 | struct uploaded_tp *utp) |
12667 | { | |
12668 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12669 | char *reply; |
12670 | struct bp_location *loc; | |
12671 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12672 | size_t size = get_remote_packet_size (); |
f196051f SS |
12673 | |
12674 | if (tp) | |
12675 | { | |
c1fc2657 | 12676 | tp->hit_count = 0; |
f196051f | 12677 | tp->traceframe_usage = 0; |
c1fc2657 | 12678 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
12679 | { |
12680 | /* If the tracepoint was never downloaded, don't go asking for | |
12681 | any status. */ | |
12682 | if (tp->number_on_target == 0) | |
12683 | continue; | |
bba74b36 YQ |
12684 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12685 | phex_nz (loc->address, 0)); | |
f196051f SS |
12686 | putpkt (rs->buf); |
12687 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12688 | if (reply && *reply) | |
12689 | { | |
12690 | if (*reply == 'V') | |
12691 | parse_tracepoint_status (reply + 1, bp, utp); | |
12692 | } | |
12693 | } | |
12694 | } | |
12695 | else if (utp) | |
12696 | { | |
12697 | utp->hit_count = 0; | |
12698 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12699 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12700 | phex_nz (utp->addr, 0)); | |
f196051f SS |
12701 | putpkt (rs->buf); |
12702 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12703 | if (reply && *reply) | |
12704 | { | |
12705 | if (*reply == 'V') | |
12706 | parse_tracepoint_status (reply + 1, bp, utp); | |
12707 | } | |
12708 | } | |
12709 | } | |
12710 | ||
35b1e5cc | 12711 | static void |
74499f1b | 12712 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
12713 | { |
12714 | putpkt ("QTStop"); | |
12715 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12716 | if (*target_buf == '\0') |
12717 | error (_("Target does not support this command.")); | |
12718 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12719 | error (_("Bogus reply from target: %s"), target_buf); |
12720 | } | |
12721 | ||
12722 | static int | |
bd4c6793 TT |
12723 | remote_trace_find (struct target_ops *self, |
12724 | enum trace_find_type type, int num, | |
cc5925ad | 12725 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12726 | int *tpp) |
12727 | { | |
12728 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12729 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12730 | char *p, *reply; |
12731 | int target_frameno = -1, target_tracept = -1; | |
12732 | ||
e6e4e701 PA |
12733 | /* Lookups other than by absolute frame number depend on the current |
12734 | trace selected, so make sure it is correct on the remote end | |
12735 | first. */ | |
12736 | if (type != tfind_number) | |
12737 | set_remote_traceframe (); | |
12738 | ||
35b1e5cc SS |
12739 | p = rs->buf; |
12740 | strcpy (p, "QTFrame:"); | |
12741 | p = strchr (p, '\0'); | |
12742 | switch (type) | |
12743 | { | |
12744 | case tfind_number: | |
bba74b36 | 12745 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12746 | break; |
12747 | case tfind_pc: | |
bba74b36 | 12748 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12749 | break; |
12750 | case tfind_tp: | |
bba74b36 | 12751 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12752 | break; |
12753 | case tfind_range: | |
bba74b36 YQ |
12754 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12755 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12756 | break; |
12757 | case tfind_outside: | |
bba74b36 YQ |
12758 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12759 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12760 | break; |
12761 | default: | |
9b20d036 | 12762 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12763 | } |
12764 | ||
12765 | putpkt (rs->buf); | |
2f65bcb7 | 12766 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
12767 | if (*reply == '\0') |
12768 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12769 | |
12770 | while (reply && *reply) | |
12771 | switch (*reply) | |
12772 | { | |
12773 | case 'F': | |
f197e0f1 VP |
12774 | p = ++reply; |
12775 | target_frameno = (int) strtol (p, &reply, 16); | |
12776 | if (reply == p) | |
12777 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12778 | /* Don't update our remote traceframe number cache on failure |
12779 | to select a remote traceframe. */ | |
f197e0f1 VP |
12780 | if (target_frameno == -1) |
12781 | return -1; | |
35b1e5cc SS |
12782 | break; |
12783 | case 'T': | |
f197e0f1 VP |
12784 | p = ++reply; |
12785 | target_tracept = (int) strtol (p, &reply, 16); | |
12786 | if (reply == p) | |
12787 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12788 | break; |
12789 | case 'O': /* "OK"? */ | |
12790 | if (reply[1] == 'K' && reply[2] == '\0') | |
12791 | reply += 2; | |
12792 | else | |
12793 | error (_("Bogus reply from target: %s"), reply); | |
12794 | break; | |
12795 | default: | |
12796 | error (_("Bogus reply from target: %s"), reply); | |
12797 | } | |
12798 | if (tpp) | |
12799 | *tpp = target_tracept; | |
e6e4e701 | 12800 | |
262e1174 | 12801 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12802 | return target_frameno; |
12803 | } | |
12804 | ||
12805 | static int | |
4011015b TT |
12806 | remote_get_trace_state_variable_value (struct target_ops *self, |
12807 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12808 | { |
12809 | struct remote_state *rs = get_remote_state (); | |
12810 | char *reply; | |
12811 | ULONGEST uval; | |
12812 | ||
e6e4e701 PA |
12813 | set_remote_traceframe (); |
12814 | ||
bba74b36 | 12815 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12816 | putpkt (rs->buf); |
12817 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12818 | if (reply && *reply) | |
12819 | { | |
12820 | if (*reply == 'V') | |
12821 | { | |
12822 | unpack_varlen_hex (reply + 1, &uval); | |
12823 | *val = (LONGEST) uval; | |
12824 | return 1; | |
12825 | } | |
12826 | } | |
12827 | return 0; | |
12828 | } | |
12829 | ||
00bf0b85 | 12830 | static int |
dc3decaf | 12831 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12832 | { |
12833 | struct remote_state *rs = get_remote_state (); | |
12834 | char *p, *reply; | |
12835 | ||
12836 | p = rs->buf; | |
12837 | strcpy (p, "QTSave:"); | |
12838 | p += strlen (p); | |
12839 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12840 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12841 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12842 | *p++ = '\0'; |
12843 | putpkt (rs->buf); | |
ad91cd99 | 12844 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12845 | if (*reply == '\0') |
ad91cd99 PA |
12846 | error (_("Target does not support this command.")); |
12847 | if (strcmp (reply, "OK") != 0) | |
12848 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12849 | return 0; |
12850 | } | |
12851 | ||
12852 | /* This is basically a memory transfer, but needs to be its own packet | |
12853 | because we don't know how the target actually organizes its trace | |
12854 | memory, plus we want to be able to ask for as much as possible, but | |
12855 | not be unhappy if we don't get as much as we ask for. */ | |
12856 | ||
12857 | static LONGEST | |
88ee6f45 TT |
12858 | remote_get_raw_trace_data (struct target_ops *self, |
12859 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12860 | { |
12861 | struct remote_state *rs = get_remote_state (); | |
12862 | char *reply; | |
12863 | char *p; | |
12864 | int rslt; | |
12865 | ||
12866 | p = rs->buf; | |
12867 | strcpy (p, "qTBuffer:"); | |
12868 | p += strlen (p); | |
12869 | p += hexnumstr (p, offset); | |
12870 | *p++ = ','; | |
12871 | p += hexnumstr (p, len); | |
12872 | *p++ = '\0'; | |
12873 | ||
12874 | putpkt (rs->buf); | |
12875 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12876 | if (reply && *reply) | |
12877 | { | |
12878 | /* 'l' by itself means we're at the end of the buffer and | |
12879 | there is nothing more to get. */ | |
12880 | if (*reply == 'l') | |
12881 | return 0; | |
12882 | ||
12883 | /* Convert the reply into binary. Limit the number of bytes to | |
12884 | convert according to our passed-in buffer size, rather than | |
12885 | what was returned in the packet; if the target is | |
12886 | unexpectedly generous and gives us a bigger reply than we | |
12887 | asked for, we don't want to crash. */ | |
12888 | rslt = hex2bin (target_buf, buf, len); | |
12889 | return rslt; | |
12890 | } | |
12891 | ||
12892 | /* Something went wrong, flag as an error. */ | |
12893 | return -1; | |
12894 | } | |
12895 | ||
35b1e5cc | 12896 | static void |
37b25738 | 12897 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12898 | { |
12899 | struct remote_state *rs = get_remote_state (); | |
12900 | ||
4082afcc | 12901 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12902 | { |
ad91cd99 PA |
12903 | char *reply; |
12904 | ||
bba74b36 | 12905 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12906 | putpkt (rs->buf); |
ad91cd99 PA |
12907 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12908 | if (*reply == '\0') | |
33da3f1c | 12909 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12910 | if (strcmp (reply, "OK") != 0) |
12911 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12912 | } |
12913 | else if (val) | |
12914 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12915 | } |
12916 | ||
dc146f7c VP |
12917 | static int |
12918 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12919 | { | |
12920 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12921 | |
fe978cb0 PA |
12922 | if (info && info->priv) |
12923 | return info->priv->core; | |
dc146f7c VP |
12924 | return -1; |
12925 | } | |
12926 | ||
4daf5ac0 | 12927 | static void |
736d5b1f | 12928 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12929 | { |
12930 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12931 | char *reply; |
4daf5ac0 | 12932 | |
bba74b36 | 12933 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12934 | putpkt (rs->buf); |
ad91cd99 PA |
12935 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12936 | if (*reply == '\0') | |
4daf5ac0 | 12937 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12938 | if (strcmp (reply, "OK") != 0) |
12939 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12940 | } |
12941 | ||
b3b9301e | 12942 | static struct traceframe_info * |
a893e81f | 12943 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12944 | { |
12945 | char *text; | |
12946 | ||
12947 | text = target_read_stralloc (¤t_target, | |
12948 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12949 | if (text != NULL) | |
12950 | { | |
12951 | struct traceframe_info *info; | |
12952 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12953 | ||
12954 | info = parse_traceframe_info (text); | |
12955 | do_cleanups (back_to); | |
12956 | return info; | |
12957 | } | |
12958 | ||
12959 | return NULL; | |
12960 | } | |
12961 | ||
405f8e94 SS |
12962 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12963 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12964 | if the packet is not supported, and 0 if the minimum instruction | |
12965 | length is unknown. */ | |
12966 | ||
12967 | static int | |
0e67620a | 12968 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12969 | { |
12970 | struct remote_state *rs = get_remote_state (); | |
12971 | char *reply; | |
12972 | ||
e886a173 PA |
12973 | /* If we're not debugging a process yet, the IPA can't be |
12974 | loaded. */ | |
12975 | if (!target_has_execution) | |
12976 | return 0; | |
12977 | ||
12978 | /* Make sure the remote is pointing at the right process. */ | |
12979 | set_general_process (); | |
12980 | ||
bba74b36 | 12981 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12982 | putpkt (rs->buf); |
12983 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12984 | if (*reply == '\0') | |
12985 | return -1; | |
12986 | else | |
12987 | { | |
12988 | ULONGEST min_insn_len; | |
12989 | ||
12990 | unpack_varlen_hex (reply, &min_insn_len); | |
12991 | ||
12992 | return (int) min_insn_len; | |
12993 | } | |
12994 | } | |
12995 | ||
f6f899bf | 12996 | static void |
4da384be | 12997 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12998 | { |
4082afcc | 12999 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13000 | { |
13001 | struct remote_state *rs = get_remote_state (); | |
13002 | char *buf = rs->buf; | |
13003 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13004 | enum packet_result result; | |
13005 | ||
13006 | gdb_assert (val >= 0 || val == -1); | |
13007 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13008 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13009 | if (val < 0) | |
13010 | { | |
13011 | *buf++ = '-'; | |
13012 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13013 | } | |
13014 | else | |
13015 | buf += hexnumstr (buf, (ULONGEST) val); | |
13016 | ||
13017 | putpkt (rs->buf); | |
13018 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
13019 | result = packet_ok (rs->buf, | |
13020 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13021 | ||
13022 | if (result != PACKET_OK) | |
13023 | warning (_("Bogus reply from target: %s"), rs->buf); | |
13024 | } | |
13025 | } | |
13026 | ||
f196051f | 13027 | static int |
d9e68a2c TT |
13028 | remote_set_trace_notes (struct target_ops *self, |
13029 | const char *user, const char *notes, | |
ca623f82 | 13030 | const char *stop_notes) |
f196051f SS |
13031 | { |
13032 | struct remote_state *rs = get_remote_state (); | |
13033 | char *reply; | |
13034 | char *buf = rs->buf; | |
13035 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13036 | int nbytes; | |
13037 | ||
13038 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13039 | if (user) | |
13040 | { | |
13041 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13042 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13043 | buf += 2 * nbytes; |
13044 | *buf++ = ';'; | |
13045 | } | |
13046 | if (notes) | |
13047 | { | |
13048 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13049 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13050 | buf += 2 * nbytes; |
13051 | *buf++ = ';'; | |
13052 | } | |
13053 | if (stop_notes) | |
13054 | { | |
13055 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13056 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13057 | buf += 2 * nbytes; |
13058 | *buf++ = ';'; | |
13059 | } | |
13060 | /* Ensure the buffer is terminated. */ | |
13061 | *buf = '\0'; | |
13062 | ||
13063 | putpkt (rs->buf); | |
13064 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
13065 | if (*reply == '\0') | |
13066 | return 0; | |
13067 | ||
13068 | if (strcmp (reply, "OK") != 0) | |
13069 | error (_("Bogus reply from target: %s"), reply); | |
13070 | ||
13071 | return 1; | |
13072 | } | |
13073 | ||
d1feda86 | 13074 | static int |
2c152180 | 13075 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 13076 | { |
4082afcc | 13077 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13078 | { |
13079 | struct remote_state *rs = get_remote_state (); | |
13080 | ||
13081 | /* If the stub supports QAgent. */ | |
bba74b36 | 13082 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13083 | putpkt (rs->buf); |
13084 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13085 | ||
13086 | if (strcmp (rs->buf, "OK") == 0) | |
13087 | { | |
13088 | use_agent = use; | |
13089 | return 1; | |
13090 | } | |
13091 | } | |
13092 | ||
13093 | return 0; | |
13094 | } | |
13095 | ||
13096 | static int | |
fe38f897 | 13097 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 13098 | { |
4082afcc | 13099 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13100 | } |
13101 | ||
9accd112 MM |
13102 | struct btrace_target_info |
13103 | { | |
13104 | /* The ptid of the traced thread. */ | |
13105 | ptid_t ptid; | |
f4abbc16 MM |
13106 | |
13107 | /* The obtained branch trace configuration. */ | |
13108 | struct btrace_config conf; | |
9accd112 MM |
13109 | }; |
13110 | ||
f4abbc16 MM |
13111 | /* Reset our idea of our target's btrace configuration. */ |
13112 | ||
13113 | static void | |
13114 | remote_btrace_reset (void) | |
13115 | { | |
13116 | struct remote_state *rs = get_remote_state (); | |
13117 | ||
13118 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13119 | } | |
13120 | ||
9accd112 MM |
13121 | /* Check whether the target supports branch tracing. */ |
13122 | ||
13123 | static int | |
043c3577 | 13124 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 13125 | { |
4082afcc | 13126 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 13127 | return 0; |
4082afcc | 13128 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
13129 | return 0; |
13130 | ||
043c3577 MM |
13131 | switch (format) |
13132 | { | |
13133 | case BTRACE_FORMAT_NONE: | |
13134 | return 0; | |
13135 | ||
13136 | case BTRACE_FORMAT_BTS: | |
13137 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
13138 | |
13139 | case BTRACE_FORMAT_PT: | |
13140 | /* The trace is decoded on the host. Even if our target supports it, | |
13141 | we still need to have libipt to decode the trace. */ | |
13142 | #if defined (HAVE_LIBIPT) | |
13143 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
13144 | #else /* !defined (HAVE_LIBIPT) */ | |
13145 | return 0; | |
13146 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
13147 | } |
13148 | ||
13149 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
13150 | } |
13151 | ||
f4abbc16 MM |
13152 | /* Synchronize the configuration with the target. */ |
13153 | ||
13154 | static void | |
13155 | btrace_sync_conf (const struct btrace_config *conf) | |
13156 | { | |
d33501a5 MM |
13157 | struct packet_config *packet; |
13158 | struct remote_state *rs; | |
13159 | char *buf, *pos, *endbuf; | |
13160 | ||
13161 | rs = get_remote_state (); | |
13162 | buf = rs->buf; | |
13163 | endbuf = buf + get_remote_packet_size (); | |
13164 | ||
13165 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13166 | if (packet_config_support (packet) == PACKET_ENABLE | |
13167 | && conf->bts.size != rs->btrace_config.bts.size) | |
13168 | { | |
13169 | pos = buf; | |
13170 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13171 | conf->bts.size); | |
13172 | ||
13173 | putpkt (buf); | |
13174 | getpkt (&buf, &rs->buf_size, 0); | |
13175 | ||
13176 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13177 | { | |
13178 | if (buf[0] == 'E' && buf[1] == '.') | |
13179 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13180 | else | |
13181 | error (_("Failed to configure the BTS buffer size.")); | |
13182 | } | |
13183 | ||
13184 | rs->btrace_config.bts.size = conf->bts.size; | |
13185 | } | |
b20a6524 MM |
13186 | |
13187 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13188 | if (packet_config_support (packet) == PACKET_ENABLE | |
13189 | && conf->pt.size != rs->btrace_config.pt.size) | |
13190 | { | |
13191 | pos = buf; | |
13192 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13193 | conf->pt.size); | |
13194 | ||
13195 | putpkt (buf); | |
13196 | getpkt (&buf, &rs->buf_size, 0); | |
13197 | ||
13198 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13199 | { | |
13200 | if (buf[0] == 'E' && buf[1] == '.') | |
13201 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13202 | else | |
13203 | error (_("Failed to configure the trace buffer size.")); | |
13204 | } | |
13205 | ||
13206 | rs->btrace_config.pt.size = conf->pt.size; | |
13207 | } | |
f4abbc16 MM |
13208 | } |
13209 | ||
13210 | /* Read the current thread's btrace configuration from the target and | |
13211 | store it into CONF. */ | |
13212 | ||
13213 | static void | |
13214 | btrace_read_config (struct btrace_config *conf) | |
13215 | { | |
13216 | char *xml; | |
13217 | ||
13218 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 13219 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
13220 | if (xml != NULL) |
13221 | { | |
13222 | struct cleanup *cleanup; | |
13223 | ||
13224 | cleanup = make_cleanup (xfree, xml); | |
13225 | parse_xml_btrace_conf (conf, xml); | |
13226 | do_cleanups (cleanup); | |
13227 | } | |
13228 | } | |
13229 | ||
c0272db5 TW |
13230 | /* Maybe reopen target btrace. */ |
13231 | ||
13232 | static void | |
13233 | remote_btrace_maybe_reopen (void) | |
13234 | { | |
13235 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13236 | struct thread_info *tp; |
13237 | int btrace_target_pushed = 0; | |
13238 | int warned = 0; | |
13239 | ||
5ed8105e PA |
13240 | scoped_restore_current_thread restore_thread; |
13241 | ||
c0272db5 TW |
13242 | ALL_NON_EXITED_THREADS (tp) |
13243 | { | |
13244 | set_general_thread (tp->ptid); | |
13245 | ||
13246 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13247 | btrace_read_config (&rs->btrace_config); | |
13248 | ||
13249 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13250 | continue; | |
13251 | ||
13252 | #if !defined (HAVE_LIBIPT) | |
13253 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13254 | { | |
13255 | if (!warned) | |
13256 | { | |
13257 | warned = 1; | |
13258 | warning (_("GDB does not support Intel Processor Trace. " | |
13259 | "\"record\" will not work in this session.")); | |
13260 | } | |
13261 | ||
13262 | continue; | |
13263 | } | |
13264 | #endif /* !defined (HAVE_LIBIPT) */ | |
13265 | ||
13266 | /* Push target, once, but before anything else happens. This way our | |
13267 | changes to the threads will be cleaned up by unpushing the target | |
13268 | in case btrace_read_config () throws. */ | |
13269 | if (!btrace_target_pushed) | |
13270 | { | |
13271 | btrace_target_pushed = 1; | |
13272 | record_btrace_push_target (); | |
13273 | printf_filtered (_("Target is recording using %s.\n"), | |
13274 | btrace_format_string (rs->btrace_config.format)); | |
13275 | } | |
13276 | ||
13277 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13278 | tp->btrace.target->ptid = tp->ptid; | |
13279 | tp->btrace.target->conf = rs->btrace_config; | |
13280 | } | |
c0272db5 TW |
13281 | } |
13282 | ||
9accd112 MM |
13283 | /* Enable branch tracing. */ |
13284 | ||
13285 | static struct btrace_target_info * | |
f4abbc16 MM |
13286 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
13287 | const struct btrace_config *conf) | |
9accd112 MM |
13288 | { |
13289 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13290 | struct packet_config *packet = NULL; |
9accd112 MM |
13291 | struct remote_state *rs = get_remote_state (); |
13292 | char *buf = rs->buf; | |
13293 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13294 | ||
b20a6524 MM |
13295 | switch (conf->format) |
13296 | { | |
13297 | case BTRACE_FORMAT_BTS: | |
13298 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13299 | break; | |
13300 | ||
13301 | case BTRACE_FORMAT_PT: | |
13302 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13303 | break; | |
13304 | } | |
13305 | ||
13306 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13307 | error (_("Target does not support branch tracing.")); |
13308 | ||
f4abbc16 MM |
13309 | btrace_sync_conf (conf); |
13310 | ||
9accd112 MM |
13311 | set_general_thread (ptid); |
13312 | ||
13313 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13314 | putpkt (rs->buf); | |
13315 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13316 | ||
13317 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13318 | { | |
13319 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13320 | error (_("Could not enable branch tracing for %s: %s"), | |
13321 | target_pid_to_str (ptid), rs->buf + 2); | |
13322 | else | |
13323 | error (_("Could not enable branch tracing for %s."), | |
13324 | target_pid_to_str (ptid)); | |
13325 | } | |
13326 | ||
8d749320 | 13327 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13328 | tinfo->ptid = ptid; |
13329 | ||
f4abbc16 MM |
13330 | /* If we fail to read the configuration, we lose some information, but the |
13331 | tracing itself is not impacted. */ | |
492d29ea PA |
13332 | TRY |
13333 | { | |
13334 | btrace_read_config (&tinfo->conf); | |
13335 | } | |
13336 | CATCH (err, RETURN_MASK_ERROR) | |
13337 | { | |
13338 | if (err.message != NULL) | |
13339 | warning ("%s", err.message); | |
13340 | } | |
13341 | END_CATCH | |
f4abbc16 | 13342 | |
9accd112 MM |
13343 | return tinfo; |
13344 | } | |
13345 | ||
13346 | /* Disable branch tracing. */ | |
13347 | ||
13348 | static void | |
25e95349 TT |
13349 | remote_disable_btrace (struct target_ops *self, |
13350 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13351 | { |
13352 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13353 | struct remote_state *rs = get_remote_state (); | |
13354 | char *buf = rs->buf; | |
13355 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13356 | ||
4082afcc | 13357 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13358 | error (_("Target does not support branch tracing.")); |
13359 | ||
13360 | set_general_thread (tinfo->ptid); | |
13361 | ||
13362 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13363 | putpkt (rs->buf); | |
13364 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13365 | ||
13366 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13367 | { | |
13368 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13369 | error (_("Could not disable branch tracing for %s: %s"), | |
13370 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13371 | else | |
13372 | error (_("Could not disable branch tracing for %s."), | |
13373 | target_pid_to_str (tinfo->ptid)); | |
13374 | } | |
13375 | ||
13376 | xfree (tinfo); | |
13377 | } | |
13378 | ||
13379 | /* Teardown branch tracing. */ | |
13380 | ||
13381 | static void | |
1777056d TT |
13382 | remote_teardown_btrace (struct target_ops *self, |
13383 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13384 | { |
13385 | /* We must not talk to the target during teardown. */ | |
13386 | xfree (tinfo); | |
13387 | } | |
13388 | ||
13389 | /* Read the branch trace. */ | |
13390 | ||
969c39fb | 13391 | static enum btrace_error |
39c49f83 | 13392 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 13393 | struct btrace_data *btrace, |
969c39fb | 13394 | struct btrace_target_info *tinfo, |
9accd112 MM |
13395 | enum btrace_read_type type) |
13396 | { | |
13397 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
969c39fb | 13398 | struct cleanup *cleanup; |
9accd112 MM |
13399 | const char *annex; |
13400 | char *xml; | |
13401 | ||
4082afcc | 13402 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13403 | error (_("Target does not support branch tracing.")); |
13404 | ||
13405 | #if !defined(HAVE_LIBEXPAT) | |
13406 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13407 | #endif | |
13408 | ||
13409 | switch (type) | |
13410 | { | |
864089d2 | 13411 | case BTRACE_READ_ALL: |
9accd112 MM |
13412 | annex = "all"; |
13413 | break; | |
864089d2 | 13414 | case BTRACE_READ_NEW: |
9accd112 MM |
13415 | annex = "new"; |
13416 | break; | |
969c39fb MM |
13417 | case BTRACE_READ_DELTA: |
13418 | annex = "delta"; | |
13419 | break; | |
9accd112 MM |
13420 | default: |
13421 | internal_error (__FILE__, __LINE__, | |
13422 | _("Bad branch tracing read type: %u."), | |
13423 | (unsigned int) type); | |
13424 | } | |
13425 | ||
13426 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 13427 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
13428 | if (xml == NULL) |
13429 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 13430 | |
969c39fb | 13431 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 13432 | parse_xml_btrace (btrace, xml); |
969c39fb | 13433 | do_cleanups (cleanup); |
9accd112 | 13434 | |
969c39fb | 13435 | return BTRACE_ERR_NONE; |
9accd112 MM |
13436 | } |
13437 | ||
f4abbc16 MM |
13438 | static const struct btrace_config * |
13439 | remote_btrace_conf (struct target_ops *self, | |
13440 | const struct btrace_target_info *tinfo) | |
13441 | { | |
13442 | return &tinfo->conf; | |
13443 | } | |
13444 | ||
ced63ec0 | 13445 | static int |
5436ff03 | 13446 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 13447 | { |
4082afcc PA |
13448 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13449 | == PACKET_ENABLE); | |
ced63ec0 GB |
13450 | } |
13451 | ||
9dd130a0 TT |
13452 | /* Implementation of to_load. */ |
13453 | ||
13454 | static void | |
9cbe5fff | 13455 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
13456 | { |
13457 | generic_load (name, from_tty); | |
13458 | } | |
13459 | ||
c78fa86a GB |
13460 | /* Accepts an integer PID; returns a string representing a file that |
13461 | can be opened on the remote side to get the symbols for the child | |
13462 | process. Returns NULL if the operation is not supported. */ | |
13463 | ||
13464 | static char * | |
13465 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
13466 | { | |
13467 | static char *filename = NULL; | |
835205d0 GB |
13468 | struct inferior *inf; |
13469 | char *annex = NULL; | |
c78fa86a GB |
13470 | |
13471 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13472 | return NULL; | |
13473 | ||
13474 | if (filename != NULL) | |
13475 | xfree (filename); | |
13476 | ||
835205d0 GB |
13477 | inf = find_inferior_pid (pid); |
13478 | if (inf == NULL) | |
13479 | internal_error (__FILE__, __LINE__, | |
13480 | _("not currently attached to process %d"), pid); | |
13481 | ||
13482 | if (!inf->fake_pid_p) | |
13483 | { | |
13484 | const int annex_size = 9; | |
13485 | ||
224c3ddb | 13486 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13487 | xsnprintf (annex, annex_size, "%x", pid); |
13488 | } | |
13489 | ||
c78fa86a GB |
13490 | filename = target_read_stralloc (¤t_target, |
13491 | TARGET_OBJECT_EXEC_FILE, annex); | |
13492 | ||
13493 | return filename; | |
13494 | } | |
13495 | ||
750ce8d1 YQ |
13496 | /* Implement the to_can_do_single_step target_ops method. */ |
13497 | ||
13498 | static int | |
13499 | remote_can_do_single_step (struct target_ops *ops) | |
13500 | { | |
13501 | /* We can only tell whether target supports single step or not by | |
13502 | supported s and S vCont actions if the stub supports vContSupported | |
13503 | feature. If the stub doesn't support vContSupported feature, | |
13504 | we have conservatively to think target doesn't supports single | |
13505 | step. */ | |
13506 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13507 | { | |
13508 | struct remote_state *rs = get_remote_state (); | |
13509 | ||
13510 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13511 | remote_vcont_probe (rs); | |
13512 | ||
13513 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13514 | } | |
13515 | else | |
13516 | return 0; | |
13517 | } | |
13518 | ||
3a00c802 PA |
13519 | /* Implementation of the to_execution_direction method for the remote |
13520 | target. */ | |
13521 | ||
13522 | static enum exec_direction_kind | |
13523 | remote_execution_direction (struct target_ops *self) | |
13524 | { | |
13525 | struct remote_state *rs = get_remote_state (); | |
13526 | ||
13527 | return rs->last_resume_exec_dir; | |
13528 | } | |
13529 | ||
c906108c | 13530 | static void |
fba45db2 | 13531 | init_remote_ops (void) |
c906108c | 13532 | { |
c5aa993b | 13533 | remote_ops.to_shortname = "remote"; |
c906108c | 13534 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13535 | remote_ops.to_doc = |
c906108c | 13536 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13537 | Specify the serial device it is connected to\n\ |
13538 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13539 | remote_ops.to_open = remote_open; |
13540 | remote_ops.to_close = remote_close; | |
c906108c | 13541 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13542 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13543 | remote_ops.to_resume = remote_resume; |
85ad3aaf | 13544 | remote_ops.to_commit_resume = remote_commit_resume; |
c906108c SS |
13545 | remote_ops.to_wait = remote_wait; |
13546 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13547 | remote_ops.to_store_registers = remote_store_registers; | |
13548 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13549 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13550 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13551 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13552 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13553 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13554 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13555 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13556 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13557 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13558 | remote_ops.to_watchpoint_addr_within_range = |
13559 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13560 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13561 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13562 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13563 | remote_ops.to_region_ok_for_hw_watchpoint |
13564 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13565 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13566 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13567 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13568 | remote_ops.to_load = remote_load; |
c906108c | 13569 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13570 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13571 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13572 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13573 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13574 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13575 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13576 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13577 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13578 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13579 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13580 | remote_ops.to_interrupt = remote_interrupt; |
93692b58 | 13581 | remote_ops.to_pass_ctrlc = remote_pass_ctrlc; |
4b8a223f | 13582 | remote_ops.to_xfer_partial = remote_xfer_partial; |
09c98b44 | 13583 | remote_ops.to_get_memory_xfer_limit = remote_get_memory_xfer_limit; |
96baa820 | 13584 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13585 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13586 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13587 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13588 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13589 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13590 | remote_ops.to_has_memory = default_child_has_memory; | |
13591 | remote_ops.to_has_stack = default_child_has_stack; | |
13592 | remote_ops.to_has_registers = default_child_has_registers; | |
13593 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13594 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13595 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13596 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13597 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13598 | remote_ops.to_flash_erase = remote_flash_erase; |
13599 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13600 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13601 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13602 | remote_ops.to_can_async_p = remote_can_async_p; |
13603 | remote_ops.to_is_async_p = remote_is_async_p; | |
13604 | remote_ops.to_async = remote_async; | |
65706a29 | 13605 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13606 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13607 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13608 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13609 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13610 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13611 | remote_ops.to_supports_disable_randomization |
13612 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13613 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13614 | remote_ops.to_fileio_open = remote_hostio_open; |
13615 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13616 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13617 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13618 | remote_ops.to_fileio_close = remote_hostio_close; |
13619 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13620 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13621 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13622 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13623 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13624 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13625 | remote_ops.to_trace_init = remote_trace_init; |
13626 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13627 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13628 | remote_ops.to_download_trace_state_variable |
13629 | = remote_download_trace_state_variable; | |
d248b706 KY |
13630 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13631 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13632 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13633 | remote_ops.to_trace_start = remote_trace_start; | |
13634 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13635 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13636 | remote_ops.to_trace_stop = remote_trace_stop; |
13637 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13638 | remote_ops.to_get_trace_state_variable_value |
13639 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13640 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13641 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13642 | remote_ops.to_upload_trace_state_variables |
13643 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13644 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13645 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13646 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13647 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13648 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13649 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13650 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13651 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13652 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13653 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13654 | remote_ops.to_static_tracepoint_marker_at |
13655 | = remote_static_tracepoint_marker_at; | |
13656 | remote_ops.to_static_tracepoint_markers_by_strid | |
13657 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13658 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13659 | remote_ops.to_use_agent = remote_use_agent; |
13660 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13661 | remote_ops.to_supports_btrace = remote_supports_btrace; |
13662 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
13663 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13664 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13665 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13666 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13667 | remote_ops.to_augmented_libraries_svr4_read = |
13668 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13669 | remote_ops.to_follow_fork = remote_follow_fork; |
13670 | remote_ops.to_follow_exec = remote_follow_exec; | |
13671 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13672 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13673 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13674 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13675 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13676 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
3a00c802 | 13677 | remote_ops.to_execution_direction = remote_execution_direction; |
c906108c SS |
13678 | } |
13679 | ||
13680 | /* Set up the extended remote vector by making a copy of the standard | |
13681 | remote vector and adding to it. */ | |
13682 | ||
13683 | static void | |
fba45db2 | 13684 | init_extended_remote_ops (void) |
c906108c SS |
13685 | { |
13686 | extended_remote_ops = remote_ops; | |
13687 | ||
0f71a2f6 | 13688 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13689 | extended_remote_ops.to_longname = |
c906108c | 13690 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13691 | extended_remote_ops.to_doc = |
c906108c | 13692 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13693 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13694 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13695 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13696 | extended_remote_ops.to_detach = extended_remote_detach; |
13697 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13698 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13699 | extended_remote_ops.to_supports_disable_randomization |
13700 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13701 | } |
13702 | ||
6426a772 | 13703 | static int |
6a109b6b | 13704 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13705 | { |
5d93a237 TT |
13706 | struct remote_state *rs = get_remote_state (); |
13707 | ||
3015c064 SM |
13708 | /* We don't go async if the user has explicitly prevented it with the |
13709 | "maint set target-async" command. */ | |
c6ebd6cf | 13710 | if (!target_async_permitted) |
75c99385 PA |
13711 | return 0; |
13712 | ||
23860348 | 13713 | /* We're async whenever the serial device is. */ |
5d93a237 | 13714 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13715 | } |
13716 | ||
13717 | static int | |
6a109b6b | 13718 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13719 | { |
5d93a237 TT |
13720 | struct remote_state *rs = get_remote_state (); |
13721 | ||
c6ebd6cf | 13722 | if (!target_async_permitted) |
75c99385 PA |
13723 | /* We only enable async when the user specifically asks for it. */ |
13724 | return 0; | |
13725 | ||
23860348 | 13726 | /* We're async whenever the serial device is. */ |
5d93a237 | 13727 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13728 | } |
13729 | ||
2acceee2 JM |
13730 | /* Pass the SERIAL event on and up to the client. One day this code |
13731 | will be able to delay notifying the client of an event until the | |
23860348 | 13732 | point where an entire packet has been received. */ |
2acceee2 | 13733 | |
2acceee2 JM |
13734 | static serial_event_ftype remote_async_serial_handler; |
13735 | ||
6426a772 | 13736 | static void |
819cc324 | 13737 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13738 | { |
2acceee2 JM |
13739 | /* Don't propogate error information up to the client. Instead let |
13740 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13741 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13742 | } |
13743 | ||
74531fed PA |
13744 | static void |
13745 | remote_async_inferior_event_handler (gdb_client_data data) | |
13746 | { | |
13747 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13748 | } | |
13749 | ||
2acceee2 | 13750 | static void |
6a3753b3 | 13751 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13752 | { |
5d93a237 TT |
13753 | struct remote_state *rs = get_remote_state (); |
13754 | ||
6a3753b3 | 13755 | if (enable) |
2acceee2 | 13756 | { |
88b496c3 | 13757 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13758 | |
13759 | /* If there are pending events in the stop reply queue tell the | |
13760 | event loop to process them. */ | |
13761 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13762 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13763 | /* For simplicity, below we clear the pending events token |
13764 | without remembering whether it is marked, so here we always | |
13765 | mark it. If there's actually no pending notification to | |
13766 | process, this ends up being a no-op (other than a spurious | |
13767 | event-loop wakeup). */ | |
13768 | if (target_is_non_stop_p ()) | |
13769 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13770 | } |
13771 | else | |
b7d2e916 PA |
13772 | { |
13773 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13774 | /* If the core is disabling async, it doesn't want to be |
13775 | disturbed with target events. Clear all async event sources | |
13776 | too. */ | |
b7d2e916 | 13777 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13778 | if (target_is_non_stop_p ()) |
13779 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13780 | } |
6426a772 JM |
13781 | } |
13782 | ||
65706a29 PA |
13783 | /* Implementation of the to_thread_events method. */ |
13784 | ||
13785 | static void | |
13786 | remote_thread_events (struct target_ops *ops, int enable) | |
13787 | { | |
13788 | struct remote_state *rs = get_remote_state (); | |
13789 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13790 | |
13791 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13792 | return; | |
13793 | ||
13794 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13795 | putpkt (rs->buf); | |
13796 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13797 | ||
13798 | switch (packet_ok (rs->buf, | |
13799 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13800 | { | |
13801 | case PACKET_OK: | |
13802 | if (strcmp (rs->buf, "OK") != 0) | |
13803 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13804 | break; | |
13805 | case PACKET_ERROR: | |
13806 | warning (_("Remote failure reply: %s"), rs->buf); | |
13807 | break; | |
13808 | case PACKET_UNKNOWN: | |
13809 | break; | |
13810 | } | |
13811 | } | |
13812 | ||
5a2468f5 | 13813 | static void |
c2d11a7d | 13814 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 13815 | { |
635c7e8a | 13816 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13817 | } |
13818 | ||
d471ea57 AC |
13819 | static void |
13820 | show_remote_cmd (char *args, int from_tty) | |
13821 | { | |
37a105a1 | 13822 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13823 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13824 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13825 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13826 | |
2e783024 | 13827 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13828 | for (; list != NULL; list = list->next) |
13829 | if (strcmp (list->name, "Z-packet") == 0) | |
13830 | continue; | |
427c3a89 DJ |
13831 | else if (list->type == not_set_cmd) |
13832 | /* Alias commands are exactly like the original, except they | |
13833 | don't have the normal type. */ | |
13834 | continue; | |
13835 | else | |
37a105a1 | 13836 | { |
2e783024 | 13837 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13838 | |
112e8700 SM |
13839 | uiout->field_string ("name", list->name); |
13840 | uiout->text (": "); | |
427c3a89 | 13841 | if (list->type == show_cmd) |
f5c4fcd9 | 13842 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13843 | else |
13844 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13845 | } |
d471ea57 | 13846 | } |
5a2468f5 | 13847 | |
0f71a2f6 | 13848 | |
23860348 | 13849 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13850 | static void |
13851 | remote_new_objfile (struct objfile *objfile) | |
13852 | { | |
5d93a237 TT |
13853 | struct remote_state *rs = get_remote_state (); |
13854 | ||
13855 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13856 | remote_check_symbols (); |
dc8acb97 MS |
13857 | } |
13858 | ||
00bf0b85 SS |
13859 | /* Pull all the tracepoints defined on the target and create local |
13860 | data structures representing them. We don't want to create real | |
13861 | tracepoints yet, we don't want to mess up the user's existing | |
13862 | collection. */ | |
13863 | ||
13864 | static int | |
ab6617cc | 13865 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13866 | { |
00bf0b85 SS |
13867 | struct remote_state *rs = get_remote_state (); |
13868 | char *p; | |
d5551862 | 13869 | |
00bf0b85 SS |
13870 | /* Ask for a first packet of tracepoint definition. */ |
13871 | putpkt ("qTfP"); | |
13872 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13873 | p = rs->buf; | |
13874 | while (*p && *p != 'l') | |
d5551862 | 13875 | { |
00bf0b85 SS |
13876 | parse_tracepoint_definition (p, utpp); |
13877 | /* Ask for another packet of tracepoint definition. */ | |
13878 | putpkt ("qTsP"); | |
13879 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13880 | p = rs->buf; | |
d5551862 | 13881 | } |
00bf0b85 | 13882 | return 0; |
d5551862 SS |
13883 | } |
13884 | ||
00bf0b85 | 13885 | static int |
181e3713 TT |
13886 | remote_upload_trace_state_variables (struct target_ops *self, |
13887 | struct uploaded_tsv **utsvp) | |
d5551862 | 13888 | { |
00bf0b85 | 13889 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13890 | char *p; |
d5551862 | 13891 | |
00bf0b85 SS |
13892 | /* Ask for a first packet of variable definition. */ |
13893 | putpkt ("qTfV"); | |
d5551862 SS |
13894 | getpkt (&rs->buf, &rs->buf_size, 0); |
13895 | p = rs->buf; | |
00bf0b85 | 13896 | while (*p && *p != 'l') |
d5551862 | 13897 | { |
00bf0b85 SS |
13898 | parse_tsv_definition (p, utsvp); |
13899 | /* Ask for another packet of variable definition. */ | |
13900 | putpkt ("qTsV"); | |
d5551862 SS |
13901 | getpkt (&rs->buf, &rs->buf_size, 0); |
13902 | p = rs->buf; | |
13903 | } | |
00bf0b85 | 13904 | return 0; |
d5551862 SS |
13905 | } |
13906 | ||
c1e36e3e PA |
13907 | /* The "set/show range-stepping" show hook. */ |
13908 | ||
13909 | static void | |
13910 | show_range_stepping (struct ui_file *file, int from_tty, | |
13911 | struct cmd_list_element *c, | |
13912 | const char *value) | |
13913 | { | |
13914 | fprintf_filtered (file, | |
13915 | _("Debugger's willingness to use range stepping " | |
13916 | "is %s.\n"), value); | |
13917 | } | |
13918 | ||
13919 | /* The "set/show range-stepping" set hook. */ | |
13920 | ||
13921 | static void | |
13922 | set_range_stepping (char *ignore_args, int from_tty, | |
13923 | struct cmd_list_element *c) | |
13924 | { | |
5d93a237 TT |
13925 | struct remote_state *rs = get_remote_state (); |
13926 | ||
c1e36e3e PA |
13927 | /* Whene enabling, check whether range stepping is actually |
13928 | supported by the target, and warn if not. */ | |
13929 | if (use_range_stepping) | |
13930 | { | |
5d93a237 | 13931 | if (rs->remote_desc != NULL) |
c1e36e3e | 13932 | { |
4082afcc | 13933 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13934 | remote_vcont_probe (rs); |
13935 | ||
4082afcc | 13936 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13937 | && rs->supports_vCont.r) |
13938 | return; | |
13939 | } | |
13940 | ||
13941 | warning (_("Range stepping is not supported by the current target")); | |
13942 | } | |
13943 | } | |
13944 | ||
c906108c | 13945 | void |
fba45db2 | 13946 | _initialize_remote (void) |
c906108c | 13947 | { |
9a7071a8 | 13948 | struct cmd_list_element *cmd; |
6f937416 | 13949 | const char *cmd_name; |
ea9c271d | 13950 | |
0f71a2f6 | 13951 | /* architecture specific data */ |
2bc416ba | 13952 | remote_gdbarch_data_handle = |
23860348 | 13953 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13954 | remote_g_packet_data_handle = |
13955 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13956 | |
94585166 DB |
13957 | remote_pspace_data |
13958 | = register_program_space_data_with_cleanup (NULL, | |
13959 | remote_pspace_data_cleanup); | |
13960 | ||
ea9c271d DJ |
13961 | /* Initialize the per-target state. At the moment there is only one |
13962 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13963 | time. */ |
13964 | remote_state = new_remote_state (); | |
ea9c271d | 13965 | |
c906108c SS |
13966 | init_remote_ops (); |
13967 | add_target (&remote_ops); | |
13968 | ||
13969 | init_extended_remote_ops (); | |
13970 | add_target (&extended_remote_ops); | |
cce74817 | 13971 | |
dc8acb97 | 13972 | /* Hook into new objfile notification. */ |
06d3b283 | 13973 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13974 | /* We're no longer interested in notification events of an inferior |
13975 | when it exits. */ | |
13976 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13977 | |
c906108c SS |
13978 | #if 0 |
13979 | init_remote_threadtests (); | |
13980 | #endif | |
13981 | ||
722247f1 | 13982 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13983 | /* set/show remote ... */ |
d471ea57 | 13984 | |
1bedd215 | 13985 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13986 | Remote protocol specific variables\n\ |
13987 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13988 | the packets being used"), |
cff3e48b | 13989 | &remote_set_cmdlist, "set remote ", |
23860348 | 13990 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13991 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13992 | Remote protocol specific variables\n\ |
13993 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13994 | the packets being used"), |
cff3e48b | 13995 | &remote_show_cmdlist, "show remote ", |
23860348 | 13996 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13997 | |
1a966eab AC |
13998 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13999 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14000 | Argument is a single section name (default: all loaded sections).\n\ |
14001 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14002 | &cmdlist); |
14003 | ||
1a966eab AC |
14004 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14005 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14006 | maintenance packet TEXT\n\ |
14007 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14008 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14009 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14010 | terminating `#' character and checksum."), |
c906108c SS |
14011 | &maintenancelist); |
14012 | ||
7915a72c AC |
14013 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14014 | Set whether to send break if interrupted."), _("\ | |
14015 | Show whether to send break if interrupted."), _("\ | |
14016 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14017 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14018 | &setlist, &showlist); |
9a7071a8 JB |
14019 | cmd_name = "remotebreak"; |
14020 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14021 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14022 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14023 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14024 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14025 | ||
14026 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14027 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14028 | _("\ | |
9a7071a8 JB |
14029 | Set interrupt sequence to remote target."), _("\ |
14030 | Show interrupt sequence to remote target."), _("\ | |
14031 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14032 | NULL, show_interrupt_sequence, | |
14033 | &remote_set_cmdlist, | |
14034 | &remote_show_cmdlist); | |
14035 | ||
14036 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14037 | &interrupt_on_connect, _("\ | |
14038 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14039 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14040 | If set, interrupt sequence is sent to remote target."), | |
14041 | NULL, NULL, | |
14042 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14043 | |
23860348 | 14044 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14045 | |
1a966eab AC |
14046 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14047 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14048 | &setlist); |
1a966eab AC |
14049 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14050 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14051 | &showlist); |
14052 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14053 | set_memory_write_packet_size, _("\ |
14054 | Set the maximum number of bytes per memory-write packet.\n\ | |
14055 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14056 | default packet size. The actual limit is further reduced\n\ | |
14057 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14058 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14059 | &remote_set_cmdlist); |
14060 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14061 | set_memory_read_packet_size, _("\ |
14062 | Set the maximum number of bytes per memory-read packet.\n\ | |
14063 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14064 | default packet size. The actual limit is further reduced\n\ | |
14065 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14066 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14067 | &remote_set_cmdlist); |
14068 | add_cmd ("memory-write-packet-size", no_class, | |
14069 | show_memory_write_packet_size, | |
1a966eab | 14070 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14071 | &remote_show_cmdlist); |
14072 | add_cmd ("memory-read-packet-size", no_class, | |
14073 | show_memory_read_packet_size, | |
1a966eab | 14074 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14075 | &remote_show_cmdlist); |
c906108c | 14076 | |
b3f42336 | 14077 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14078 | &remote_hw_watchpoint_limit, _("\ |
14079 | Set the maximum number of target hardware watchpoints."), _("\ | |
14080 | Show the maximum number of target hardware watchpoints."), _("\ | |
14081 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14082 | NULL, NULL, /* FIXME: i18n: The maximum |
14083 | number of target hardware | |
14084 | watchpoints is %s. */ | |
b3f42336 | 14085 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14086 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14087 | &remote_hw_watchpoint_length_limit, _("\ | |
14088 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14089 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14090 | Specify a negative limit for unlimited."), | |
14091 | NULL, NULL, /* FIXME: i18n: The maximum | |
14092 | length (in bytes) of a target | |
14093 | hardware watchpoint is %s. */ | |
14094 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14095 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14096 | &remote_hw_breakpoint_limit, _("\ |
14097 | Set the maximum number of target hardware breakpoints."), _("\ | |
14098 | Show the maximum number of target hardware breakpoints."), _("\ | |
14099 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14100 | NULL, NULL, /* FIXME: i18n: The maximum |
14101 | number of target hardware | |
14102 | breakpoints is %s. */ | |
b3f42336 | 14103 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14104 | |
1b493192 PA |
14105 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14106 | &remote_address_size, _("\ | |
4d28ad1e AC |
14107 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14108 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14109 | NULL, |
14110 | NULL, /* FIXME: i18n: */ | |
14111 | &setlist, &showlist); | |
c906108c | 14112 | |
ca4f7f8b PA |
14113 | init_all_packet_configs (); |
14114 | ||
444abaca | 14115 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14116 | "X", "binary-download", 1); |
0f71a2f6 | 14117 | |
444abaca | 14118 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14119 | "vCont", "verbose-resume", 0); |
506fb367 | 14120 | |
89be2091 DJ |
14121 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14122 | "QPassSignals", "pass-signals", 0); | |
14123 | ||
82075af2 JS |
14124 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14125 | "QCatchSyscalls", "catch-syscalls", 0); | |
14126 | ||
9b224c5e PA |
14127 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14128 | "QProgramSignals", "program-signals", 0); | |
14129 | ||
aefd8b33 SDJ |
14130 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14131 | "QStartupWithShell", "startup-with-shell", 0); | |
14132 | ||
0a2dde4a SDJ |
14133 | add_packet_config_cmd (&remote_protocol_packets |
14134 | [PACKET_QEnvironmentHexEncoded], | |
14135 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14136 | 0); | |
14137 | ||
14138 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14139 | "QEnvironmentReset", "environment-reset", | |
14140 | 0); | |
14141 | ||
14142 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14143 | "QEnvironmentUnset", "environment-unset", | |
14144 | 0); | |
14145 | ||
444abaca | 14146 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14147 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14148 | |
444abaca | 14149 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14150 | "P", "set-register", 1); |
d471ea57 | 14151 | |
444abaca | 14152 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14153 | "p", "fetch-register", 1); |
b96ec7ac | 14154 | |
444abaca | 14155 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14156 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14157 | |
444abaca | 14158 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14159 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14160 | |
444abaca | 14161 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14162 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14163 | |
444abaca | 14164 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14165 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14166 | |
444abaca | 14167 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14168 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14169 | |
0876f84a DJ |
14170 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14171 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14172 | |
c78fa86a GB |
14173 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14174 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14175 | ||
23181151 DJ |
14176 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14177 | "qXfer:features:read", "target-features", 0); | |
14178 | ||
cfa9d6d9 DJ |
14179 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14180 | "qXfer:libraries:read", "library-info", 0); | |
14181 | ||
2268b414 JK |
14182 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14183 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14184 | ||
fd79ecee DJ |
14185 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14186 | "qXfer:memory-map:read", "memory-map", 0); | |
14187 | ||
0e7f50da UW |
14188 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14189 | "qXfer:spu:read", "read-spu-object", 0); | |
14190 | ||
14191 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14192 | "qXfer:spu:write", "write-spu-object", 0); | |
14193 | ||
07e059b5 VP |
14194 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14195 | "qXfer:osdata:read", "osdata", 0); | |
14196 | ||
dc146f7c VP |
14197 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14198 | "qXfer:threads:read", "threads", 0); | |
14199 | ||
4aa995e1 PA |
14200 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14201 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14202 | ||
14203 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14204 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14205 | ||
b3b9301e PA |
14206 | add_packet_config_cmd |
14207 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14208 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14209 | |
169081d0 TG |
14210 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14211 | "qXfer:uib:read", "unwind-info-block", 0); | |
14212 | ||
444abaca | 14213 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14214 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14215 | 0); |
14216 | ||
711e434b PM |
14217 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14218 | "qGetTIBAddr", "get-thread-information-block-address", | |
14219 | 0); | |
14220 | ||
40ab02ce MS |
14221 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14222 | "bc", "reverse-continue", 0); | |
14223 | ||
14224 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14225 | "bs", "reverse-step", 0); | |
14226 | ||
be2a5f71 DJ |
14227 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14228 | "qSupported", "supported-packets", 0); | |
14229 | ||
08388c79 DE |
14230 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14231 | "qSearch:memory", "search-memory", 0); | |
14232 | ||
bd3eecc3 PA |
14233 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14234 | "qTStatus", "trace-status", 0); | |
14235 | ||
15a201c8 GB |
14236 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14237 | "vFile:setfs", "hostio-setfs", 0); | |
14238 | ||
a6b151f1 DJ |
14239 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14240 | "vFile:open", "hostio-open", 0); | |
14241 | ||
14242 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14243 | "vFile:pread", "hostio-pread", 0); | |
14244 | ||
14245 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14246 | "vFile:pwrite", "hostio-pwrite", 0); | |
14247 | ||
14248 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14249 | "vFile:close", "hostio-close", 0); | |
14250 | ||
14251 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14252 | "vFile:unlink", "hostio-unlink", 0); | |
14253 | ||
b9e7b9c3 UW |
14254 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14255 | "vFile:readlink", "hostio-readlink", 0); | |
14256 | ||
0a93529c GB |
14257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14258 | "vFile:fstat", "hostio-fstat", 0); | |
14259 | ||
2d717e4f DJ |
14260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14261 | "vAttach", "attach", 0); | |
14262 | ||
14263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14264 | "vRun", "run", 0); | |
14265 | ||
a6f3e723 SL |
14266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14267 | "QStartNoAckMode", "noack", 0); | |
14268 | ||
82f73884 PA |
14269 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14270 | "vKill", "kill", 0); | |
14271 | ||
0b16c5cf PA |
14272 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14273 | "qAttached", "query-attached", 0); | |
14274 | ||
782b2b07 | 14275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14276 | "ConditionalTracepoints", |
14277 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14278 | |
14279 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14280 | "ConditionalBreakpoints", | |
14281 | "conditional-breakpoints", 0); | |
14282 | ||
d3ce09f5 SS |
14283 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14284 | "BreakpointCommands", | |
14285 | "breakpoint-commands", 0); | |
14286 | ||
7a697b8d SS |
14287 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14288 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14289 | |
409873ef SS |
14290 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14291 | "TracepointSource", "TracepointSource", 0); | |
14292 | ||
d914c394 SS |
14293 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14294 | "QAllow", "allow", 0); | |
14295 | ||
0fb4aa4b PA |
14296 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14297 | "StaticTracepoints", "static-tracepoints", 0); | |
14298 | ||
1e4d1764 YQ |
14299 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14300 | "InstallInTrace", "install-in-trace", 0); | |
14301 | ||
0fb4aa4b PA |
14302 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14303 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14304 | ||
78d85199 YQ |
14305 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14306 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14307 | ||
03583c20 UW |
14308 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14309 | "QDisableRandomization", "disable-randomization", 0); | |
14310 | ||
d1feda86 YQ |
14311 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14312 | "QAgent", "agent", 0); | |
14313 | ||
f6f899bf HAQ |
14314 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14315 | "QTBuffer:size", "trace-buffer-size", 0); | |
14316 | ||
9accd112 MM |
14317 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14318 | "Qbtrace:off", "disable-btrace", 0); | |
14319 | ||
14320 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14321 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14322 | ||
14323 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14324 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14325 | |
14326 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14327 | "qXfer:btrace", "read-btrace", 0); | |
14328 | ||
f4abbc16 MM |
14329 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14330 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14331 | ||
d33501a5 MM |
14332 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14333 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14334 | ||
73b8c1fd PA |
14335 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14336 | "multiprocess-feature", "multiprocess-feature", 0); | |
14337 | ||
f7e6eed5 PA |
14338 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14339 | "swbreak-feature", "swbreak-feature", 0); | |
14340 | ||
14341 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14342 | "hwbreak-feature", "hwbreak-feature", 0); | |
14343 | ||
89245bc0 DB |
14344 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14345 | "fork-event-feature", "fork-event-feature", 0); | |
14346 | ||
14347 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14348 | "vfork-event-feature", "vfork-event-feature", 0); | |
14349 | ||
b20a6524 MM |
14350 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14351 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14352 | ||
750ce8d1 YQ |
14353 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14354 | "vContSupported", "verbose-resume-supported", 0); | |
14355 | ||
94585166 DB |
14356 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14357 | "exec-event-feature", "exec-event-feature", 0); | |
14358 | ||
de979965 PA |
14359 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14360 | "vCtrlC", "ctrl-c", 0); | |
14361 | ||
65706a29 PA |
14362 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14363 | "QThreadEvents", "thread-events", 0); | |
14364 | ||
f2faf941 PA |
14365 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14366 | "N stop reply", "no-resumed-stop-reply", 0); | |
14367 | ||
0b736949 DB |
14368 | /* Assert that we've registered "set remote foo-packet" commands |
14369 | for all packet configs. */ | |
ca4f7f8b PA |
14370 | { |
14371 | int i; | |
14372 | ||
14373 | for (i = 0; i < PACKET_MAX; i++) | |
14374 | { | |
14375 | /* Ideally all configs would have a command associated. Some | |
14376 | still don't though. */ | |
14377 | int excepted; | |
14378 | ||
14379 | switch (i) | |
14380 | { | |
14381 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14382 | case PACKET_EnableDisableTracepoints_feature: |
14383 | case PACKET_tracenz_feature: | |
14384 | case PACKET_DisconnectedTracing_feature: | |
14385 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14386 | case PACKET_qCRC: |
14387 | /* Additions to this list need to be well justified: | |
14388 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14389 | excepted = 1; |
14390 | break; | |
14391 | default: | |
14392 | excepted = 0; | |
14393 | break; | |
14394 | } | |
14395 | ||
14396 | /* This catches both forgetting to add a config command, and | |
14397 | forgetting to remove a packet from the exception list. */ | |
14398 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14399 | } | |
14400 | } | |
14401 | ||
37a105a1 DJ |
14402 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14403 | Z sub-packet has its own set and show commands, but users may | |
14404 | have sets to this variable in their .gdbinit files (or in their | |
14405 | documentation). */ | |
e9e68a56 | 14406 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14407 | &remote_Z_packet_detect, _("\ |
14408 | Set use of remote protocol `Z' packets"), _("\ | |
14409 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14410 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14411 | packets."), |
e9e68a56 | 14412 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14413 | show_remote_protocol_Z_packet_cmd, |
14414 | /* FIXME: i18n: Use of remote protocol | |
14415 | `Z' packets is %s. */ | |
e9e68a56 | 14416 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14417 | |
a6b151f1 DJ |
14418 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14419 | Manipulate files on the remote system\n\ | |
14420 | Transfer files to and from the remote target system."), | |
14421 | &remote_cmdlist, "remote ", | |
14422 | 0 /* allow-unknown */, &cmdlist); | |
14423 | ||
14424 | add_cmd ("put", class_files, remote_put_command, | |
14425 | _("Copy a local file to the remote system."), | |
14426 | &remote_cmdlist); | |
14427 | ||
14428 | add_cmd ("get", class_files, remote_get_command, | |
14429 | _("Copy a remote file to the local system."), | |
14430 | &remote_cmdlist); | |
14431 | ||
14432 | add_cmd ("delete", class_files, remote_delete_command, | |
14433 | _("Delete a remote file."), | |
14434 | &remote_cmdlist); | |
14435 | ||
2d717e4f | 14436 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14437 | &remote_exec_file_var, _("\ |
2d717e4f | 14438 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14439 | Show the remote pathname for \"run\""), NULL, |
14440 | set_remote_exec_file, | |
14441 | show_remote_exec_file, | |
14442 | &remote_set_cmdlist, | |
14443 | &remote_show_cmdlist); | |
2d717e4f | 14444 | |
c1e36e3e PA |
14445 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14446 | &use_range_stepping, _("\ | |
14447 | Enable or disable range stepping."), _("\ | |
14448 | Show whether target-assisted range stepping is enabled."), _("\ | |
14449 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14450 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14451 | of issuing multiple single-steps. This speeds up source level\n\ | |
14452 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14453 | stepping is supported by the target. The default is on."), | |
14454 | set_range_stepping, | |
14455 | show_range_stepping, | |
14456 | &setlist, | |
14457 | &showlist); | |
14458 | ||
449092f6 CV |
14459 | /* Eventually initialize fileio. See fileio.c */ |
14460 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14461 | |
ba348170 | 14462 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14463 | special ptids with it set to != 0. */ |
ba348170 PA |
14464 | magic_null_ptid = ptid_build (42000, -1, 1); |
14465 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14466 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
14467 | |
14468 | target_buf_size = 2048; | |
224c3ddb | 14469 | target_buf = (char *) xmalloc (target_buf_size); |
c906108c | 14470 | } |
10760264 | 14471 |