Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1988-2017 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
438e1e42 | 50 | #include "gdb_sys_time.h" |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
2ec845e7 | 75 | #include "common/scoped_restore.h" |
35b1e5cc | 76 | |
0df8b418 | 77 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
78 | static char *target_buf; |
79 | static long target_buf_size; | |
35b1e5cc | 80 | |
94585166 DB |
81 | /* Per-program-space data key. */ |
82 | static const struct program_space_data *remote_pspace_data; | |
83 | ||
84 | /* The variable registered as the control variable used by the | |
85 | remote exec-file commands. While the remote exec-file setting is | |
86 | per-program-space, the set/show machinery uses this as the | |
87 | location of the remote exec-file value. */ | |
88 | static char *remote_exec_file_var; | |
89 | ||
6765f3e5 DJ |
90 | /* The size to align memory write packets, when practical. The protocol |
91 | does not guarantee any alignment, and gdb will generate short | |
92 | writes and unaligned writes, but even as a best-effort attempt this | |
93 | can improve bulk transfers. For instance, if a write is misaligned | |
94 | relative to the target's data bus, the stub may need to make an extra | |
95 | round trip fetching data from the target. This doesn't make a | |
96 | huge difference, but it's easy to do, so we try to be helpful. | |
97 | ||
98 | The alignment chosen is arbitrary; usually data bus width is | |
99 | important here, not the possibly larger cache line size. */ | |
100 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
101 | ||
23860348 | 102 | /* Prototypes for local functions. */ |
6d820c5c | 103 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 104 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 105 | int forever, int *is_notif); |
6426a772 | 106 | |
a14ed312 | 107 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 108 | |
f32dbf8c MM |
109 | static void remote_prepare_to_store (struct target_ops *self, |
110 | struct regcache *regcache); | |
c906108c | 111 | |
014f9477 TT |
112 | static void remote_open_1 (const char *, int, struct target_ops *, |
113 | int extended_p); | |
c906108c | 114 | |
de90e03d | 115 | static void remote_close (struct target_ops *self); |
c906108c | 116 | |
cbb8991c DB |
117 | struct remote_state; |
118 | ||
119 | static int remote_vkill (int pid, struct remote_state *rs); | |
120 | ||
8020350c DB |
121 | static void remote_kill_k (void); |
122 | ||
136d6dae | 123 | static void remote_mourn (struct target_ops *ops); |
c906108c | 124 | |
a14ed312 | 125 | static void extended_remote_restart (void); |
c906108c | 126 | |
6d820c5c | 127 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 128 | |
a14ed312 | 129 | static int readchar (int timeout); |
c906108c | 130 | |
c33e31fd PA |
131 | static void remote_serial_write (const char *str, int len); |
132 | ||
7d85a9c0 | 133 | static void remote_kill (struct target_ops *ops); |
c906108c | 134 | |
6a109b6b | 135 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 136 | |
6a109b6b | 137 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 138 | |
6a3753b3 | 139 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 140 | |
65706a29 PA |
141 | static void remote_thread_events (struct target_ops *ops, int enable); |
142 | ||
a14ed312 | 143 | static void interrupt_query (void); |
c906108c | 144 | |
d62a8ae2 SM |
145 | static void set_general_thread (ptid_t ptid); |
146 | static void set_continue_thread (ptid_t ptid); | |
c906108c | 147 | |
a14ed312 | 148 | static void get_offsets (void); |
c906108c | 149 | |
6d820c5c DJ |
150 | static void skip_frame (void); |
151 | ||
152 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 153 | |
a14ed312 | 154 | static int hexnumlen (ULONGEST num); |
c906108c | 155 | |
a14ed312 | 156 | static void init_remote_ops (void); |
c906108c | 157 | |
a14ed312 | 158 | static void init_extended_remote_ops (void); |
c906108c | 159 | |
1eab8a48 | 160 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 161 | |
a14ed312 | 162 | static int stubhex (int ch); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumstr (char *, ULONGEST); |
c906108c | 165 | |
a14ed312 | 166 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 167 | |
a14ed312 | 168 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 169 | |
baa336ce | 170 | static void print_packet (const char *); |
c906108c | 171 | |
a14ed312 | 172 | static void compare_sections_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static void packet_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 177 | |
39f77062 | 178 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 179 | |
baa336ce | 180 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 181 | |
a14ed312 | 182 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 183 | |
5a2468f5 | 184 | struct packet_config; |
5a2468f5 | 185 | |
a14ed312 | 186 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 187 | |
bb572ddd DJ |
188 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
189 | int from_tty, | |
190 | struct cmd_list_element *c, | |
191 | const char *value); | |
192 | ||
82f73884 PA |
193 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
194 | static ptid_t read_ptid (char *buf, char **obuf); | |
195 | ||
c378d69d | 196 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 197 | |
8bd200f1 TT |
198 | static int remote_get_trace_status (struct target_ops *self, |
199 | struct trace_status *ts); | |
d5551862 | 200 | |
ab6617cc TT |
201 | static int remote_upload_tracepoints (struct target_ops *self, |
202 | struct uploaded_tp **utpp); | |
00bf0b85 | 203 | |
181e3713 TT |
204 | static int remote_upload_trace_state_variables (struct target_ops *self, |
205 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 206 | |
c8d104ad PA |
207 | static void remote_query_supported (void); |
208 | ||
36d25514 | 209 | static void remote_check_symbols (void); |
c8d104ad | 210 | |
a14ed312 | 211 | void _initialize_remote (void); |
c906108c | 212 | |
74531fed | 213 | struct stop_reply; |
74531fed | 214 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 215 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 216 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 217 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
218 | static int peek_stop_reply (ptid_t ptid); |
219 | ||
cbb8991c DB |
220 | struct threads_listing_context; |
221 | static void remove_new_fork_children (struct threads_listing_context *); | |
222 | ||
74531fed | 223 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 224 | |
e3594fd1 | 225 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 226 | |
d962ef82 DJ |
227 | static int remote_read_description_p (struct target_ops *target); |
228 | ||
176a6961 | 229 | static void remote_console_output (char *msg); |
dde08ee1 | 230 | |
efcc2da7 | 231 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 232 | |
78eff0ec | 233 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 234 | |
f4abbc16 MM |
235 | static void remote_btrace_reset (void); |
236 | ||
c0272db5 TW |
237 | static void remote_btrace_maybe_reopen (void); |
238 | ||
221e1a37 PA |
239 | static int stop_reply_queue_length (void); |
240 | ||
80152258 PA |
241 | static void readahead_cache_invalidate (void); |
242 | ||
048094ac PA |
243 | static void remote_unpush_and_throw (void); |
244 | ||
a6b151f1 DJ |
245 | /* For "remote". */ |
246 | ||
247 | static struct cmd_list_element *remote_cmdlist; | |
248 | ||
bb572ddd DJ |
249 | /* For "set remote" and "show remote". */ |
250 | ||
251 | static struct cmd_list_element *remote_set_cmdlist; | |
252 | static struct cmd_list_element *remote_show_cmdlist; | |
253 | ||
d458bd84 PA |
254 | /* Stub vCont actions support. |
255 | ||
256 | Each field is a boolean flag indicating whether the stub reports | |
257 | support for the corresponding action. */ | |
258 | ||
259 | struct vCont_action_support | |
260 | { | |
261 | /* vCont;t */ | |
262 | int t; | |
c1e36e3e PA |
263 | |
264 | /* vCont;r */ | |
265 | int r; | |
750ce8d1 YQ |
266 | |
267 | /* vCont;s */ | |
268 | int s; | |
269 | ||
270 | /* vCont;S */ | |
271 | int S; | |
d458bd84 PA |
272 | }; |
273 | ||
c1e36e3e PA |
274 | /* Controls whether GDB is willing to use range stepping. */ |
275 | ||
276 | static int use_range_stepping = 1; | |
277 | ||
0d031856 TT |
278 | #define OPAQUETHREADBYTES 8 |
279 | ||
280 | /* a 64 bit opaque identifier */ | |
281 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
282 | ||
283 | /* About this many threadisds fit in a packet. */ | |
284 | ||
285 | #define MAXTHREADLISTRESULTS 32 | |
286 | ||
6f8976bf YQ |
287 | /* The max number of chars in debug output. The rest of chars are |
288 | omitted. */ | |
289 | ||
290 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
291 | ||
80152258 PA |
292 | /* Data for the vFile:pread readahead cache. */ |
293 | ||
294 | struct readahead_cache | |
295 | { | |
296 | /* The file descriptor for the file that is being cached. -1 if the | |
297 | cache is invalid. */ | |
298 | int fd; | |
299 | ||
300 | /* The offset into the file that the cache buffer corresponds | |
301 | to. */ | |
302 | ULONGEST offset; | |
303 | ||
304 | /* The buffer holding the cache contents. */ | |
305 | gdb_byte *buf; | |
306 | /* The buffer's size. We try to read as much as fits into a packet | |
307 | at a time. */ | |
308 | size_t bufsize; | |
309 | ||
310 | /* Cache hit and miss counters. */ | |
311 | ULONGEST hit_count; | |
312 | ULONGEST miss_count; | |
313 | }; | |
314 | ||
ea9c271d DJ |
315 | /* Description of the remote protocol state for the currently |
316 | connected target. This is per-target state, and independent of the | |
317 | selected architecture. */ | |
318 | ||
319 | struct remote_state | |
320 | { | |
321 | /* A buffer to use for incoming packets, and its current size. The | |
322 | buffer is grown dynamically for larger incoming packets. | |
323 | Outgoing packets may also be constructed in this buffer. | |
324 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
325 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
326 | packets. */ | |
327 | char *buf; | |
328 | long buf_size; | |
be2a5f71 | 329 | |
1e51243a PA |
330 | /* True if we're going through initial connection setup (finding out |
331 | about the remote side's threads, relocating symbols, etc.). */ | |
332 | int starting_up; | |
333 | ||
be2a5f71 DJ |
334 | /* If we negotiated packet size explicitly (and thus can bypass |
335 | heuristics for the largest packet size that will not overflow | |
336 | a buffer in the stub), this will be set to that packet size. | |
337 | Otherwise zero, meaning to use the guessed size. */ | |
338 | long explicit_packet_size; | |
2d717e4f DJ |
339 | |
340 | /* remote_wait is normally called when the target is running and | |
341 | waits for a stop reply packet. But sometimes we need to call it | |
342 | when the target is already stopped. We can send a "?" packet | |
343 | and have remote_wait read the response. Or, if we already have | |
344 | the response, we can stash it in BUF and tell remote_wait to | |
345 | skip calling getpkt. This flag is set when BUF contains a | |
346 | stop reply packet and the target is not waiting. */ | |
347 | int cached_wait_status; | |
a6f3e723 SL |
348 | |
349 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
350 | expect acks from each other. The connection is assumed to be | |
351 | reliable. */ | |
352 | int noack_mode; | |
82f73884 PA |
353 | |
354 | /* True if we're connected in extended remote mode. */ | |
355 | int extended; | |
356 | ||
e24a49d8 PA |
357 | /* True if we resumed the target and we're waiting for the target to |
358 | stop. In the mean time, we can't start another command/query. | |
359 | The remote server wouldn't be ready to process it, so we'd | |
360 | timeout waiting for a reply that would never come and eventually | |
361 | we'd close the connection. This can happen in asynchronous mode | |
362 | because we allow GDB commands while the target is running. */ | |
363 | int waiting_for_stop_reply; | |
74531fed | 364 | |
d458bd84 PA |
365 | /* The status of the stub support for the various vCont actions. */ |
366 | struct vCont_action_support supports_vCont; | |
782b2b07 | 367 | |
3a29589a DJ |
368 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
369 | responded to that. */ | |
370 | int ctrlc_pending_p; | |
5d93a237 | 371 | |
048094ac PA |
372 | /* True if we saw a Ctrl-C while reading or writing from/to the |
373 | remote descriptor. At that point it is not safe to send a remote | |
374 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
375 | process it once we're done with sending/receiving the current | |
376 | packet, which should be shortly. If however that takes too long, | |
377 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
378 | int got_ctrlc_during_io; | |
379 | ||
5d93a237 TT |
380 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
381 | remote_open knows that we don't have a file open when the program | |
382 | starts. */ | |
383 | struct serial *remote_desc; | |
47f8a51d TT |
384 | |
385 | /* These are the threads which we last sent to the remote system. The | |
386 | TID member will be -1 for all or -2 for not sent yet. */ | |
387 | ptid_t general_thread; | |
388 | ptid_t continue_thread; | |
262e1174 TT |
389 | |
390 | /* This is the traceframe which we last selected on the remote system. | |
391 | It will be -1 if no traceframe is selected. */ | |
392 | int remote_traceframe_number; | |
747dc59d TT |
393 | |
394 | char *last_pass_packet; | |
5e4a05c4 TT |
395 | |
396 | /* The last QProgramSignals packet sent to the target. We bypass | |
397 | sending a new program signals list down to the target if the new | |
398 | packet is exactly the same as the last we sent. IOW, we only let | |
399 | the target know about program signals list changes. */ | |
400 | char *last_program_signals_packet; | |
b73be471 TT |
401 | |
402 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
403 | |
404 | int last_sent_step; | |
8e88304f | 405 | |
3a00c802 PA |
406 | /* The execution direction of the last resume we got. */ |
407 | enum exec_direction_kind last_resume_exec_dir; | |
408 | ||
8e88304f TT |
409 | char *finished_object; |
410 | char *finished_annex; | |
411 | ULONGEST finished_offset; | |
b80fafe3 TT |
412 | |
413 | /* Should we try the 'ThreadInfo' query packet? | |
414 | ||
415 | This variable (NOT available to the user: auto-detect only!) | |
416 | determines whether GDB will use the new, simpler "ThreadInfo" | |
417 | query or the older, more complex syntax for thread queries. | |
418 | This is an auto-detect variable (set to true at each connect, | |
419 | and set to false when the target fails to recognize it). */ | |
420 | int use_threadinfo_query; | |
421 | int use_threadextra_query; | |
88b496c3 | 422 | |
0d031856 TT |
423 | threadref echo_nextthread; |
424 | threadref nextthread; | |
425 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
426 | |
427 | /* The state of remote notification. */ | |
428 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
429 | |
430 | /* The branch trace configuration. */ | |
431 | struct btrace_config btrace_config; | |
15a201c8 GB |
432 | |
433 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
434 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
435 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
436 | has yet been sent. */ | |
437 | int fs_pid; | |
80152258 PA |
438 | |
439 | /* A readahead cache for vFile:pread. Often, reading a binary | |
440 | involves a sequence of small reads. E.g., when parsing an ELF | |
441 | file. A readahead cache helps mostly the case of remote | |
442 | debugging on a connection with higher latency, due to the | |
443 | request/reply nature of the RSP. We only cache data for a single | |
444 | file descriptor at a time. */ | |
445 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
446 | }; |
447 | ||
dc146f7c VP |
448 | /* Private data that we'll store in (struct thread_info)->private. */ |
449 | struct private_thread_info | |
450 | { | |
451 | char *extra; | |
79efa585 | 452 | char *name; |
dc146f7c | 453 | int core; |
799a2abe PA |
454 | |
455 | /* Whether the target stopped for a breakpoint/watchpoint. */ | |
456 | enum target_stop_reason stop_reason; | |
457 | ||
458 | /* This is set to the data address of the access causing the target | |
459 | to stop for a watchpoint. */ | |
460 | CORE_ADDR watch_data_address; | |
85ad3aaf PA |
461 | |
462 | /* Fields used by the vCont action coalescing implemented in | |
463 | remote_resume / remote_commit_resume. remote_resume stores each | |
464 | thread's last resume request in these fields, so that a later | |
465 | remote_commit_resume knows which is the proper action for this | |
466 | thread to include in the vCont packet. */ | |
467 | ||
468 | /* True if the last target_resume call for this thread was a step | |
469 | request, false if a continue request. */ | |
470 | int last_resume_step; | |
471 | ||
472 | /* The signal specified in the last target_resume call for this | |
473 | thread. */ | |
474 | enum gdb_signal last_resume_sig; | |
475 | ||
476 | /* Whether this thread was already vCont-resumed on the remote | |
477 | side. */ | |
478 | int vcont_resumed; | |
dc146f7c VP |
479 | }; |
480 | ||
481 | static void | |
482 | free_private_thread_info (struct private_thread_info *info) | |
483 | { | |
484 | xfree (info->extra); | |
79efa585 | 485 | xfree (info->name); |
dc146f7c VP |
486 | xfree (info); |
487 | } | |
488 | ||
ea9c271d DJ |
489 | /* This data could be associated with a target, but we do not always |
490 | have access to the current target when we need it, so for now it is | |
491 | static. This will be fine for as long as only one target is in use | |
492 | at a time. */ | |
cf792862 | 493 | static struct remote_state *remote_state; |
ea9c271d DJ |
494 | |
495 | static struct remote_state * | |
0b83947e | 496 | get_remote_state_raw (void) |
ea9c271d | 497 | { |
cf792862 TT |
498 | return remote_state; |
499 | } | |
500 | ||
501 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
502 | return it. */ | |
503 | ||
504 | static struct remote_state * | |
505 | new_remote_state (void) | |
506 | { | |
507 | struct remote_state *result = XCNEW (struct remote_state); | |
508 | ||
509 | /* The default buffer size is unimportant; it will be expanded | |
510 | whenever a larger buffer is needed. */ | |
511 | result->buf_size = 400; | |
224c3ddb | 512 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 513 | result->remote_traceframe_number = -1; |
b73be471 | 514 | result->last_sent_signal = GDB_SIGNAL_0; |
3a00c802 | 515 | result->last_resume_exec_dir = EXEC_FORWARD; |
15a201c8 | 516 | result->fs_pid = -1; |
cf792862 TT |
517 | |
518 | return result; | |
ea9c271d DJ |
519 | } |
520 | ||
521 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 522 | |
ad10f812 AC |
523 | struct packet_reg |
524 | { | |
525 | long offset; /* Offset into G packet. */ | |
526 | long regnum; /* GDB's internal register number. */ | |
527 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 528 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 529 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 530 | at present. */ |
f5656ead | 531 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 532 | at present. */ |
ad10f812 AC |
533 | }; |
534 | ||
ea9c271d | 535 | struct remote_arch_state |
d01949b6 | 536 | { |
ad10f812 AC |
537 | /* Description of the remote protocol registers. */ |
538 | long sizeof_g_packet; | |
b323314b AC |
539 | |
540 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 541 | (making an array gdbarch_num_regs in size). */ |
b323314b | 542 | struct packet_reg *regs; |
ad10f812 | 543 | |
d01949b6 AC |
544 | /* This is the size (in chars) of the first response to the ``g'' |
545 | packet. It is used as a heuristic when determining the maximum | |
546 | size of memory-read and memory-write packets. A target will | |
547 | typically only reserve a buffer large enough to hold the ``g'' | |
548 | packet. The size does not include packet overhead (headers and | |
23860348 | 549 | trailers). */ |
d01949b6 AC |
550 | long actual_register_packet_size; |
551 | ||
552 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 553 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
554 | long remote_packet_size; |
555 | }; | |
556 | ||
35b1e5cc SS |
557 | /* Utility: generate error from an incoming stub packet. */ |
558 | static void | |
559 | trace_error (char *buf) | |
560 | { | |
561 | if (*buf++ != 'E') | |
562 | return; /* not an error msg */ | |
563 | switch (*buf) | |
564 | { | |
565 | case '1': /* malformed packet error */ | |
566 | if (*++buf == '0') /* general case: */ | |
567 | error (_("remote.c: error in outgoing packet.")); | |
568 | else | |
569 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
570 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
571 | default: |
572 | error (_("Target returns error code '%s'."), buf); | |
573 | } | |
574 | } | |
575 | ||
576 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
577 | static char * | |
578 | remote_get_noisy_reply (char **buf_p, | |
579 | long *sizeof_buf) | |
580 | { | |
581 | do /* Loop on reply from remote stub. */ | |
582 | { | |
583 | char *buf; | |
a744cf53 | 584 | |
0df8b418 | 585 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
586 | getpkt (buf_p, sizeof_buf, 0); |
587 | buf = *buf_p; | |
ad91cd99 | 588 | if (buf[0] == 'E') |
35b1e5cc | 589 | trace_error (buf); |
61012eef | 590 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
591 | { |
592 | ULONGEST ul; | |
593 | CORE_ADDR from, to, org_to; | |
594 | char *p, *pp; | |
595 | int adjusted_size = 0; | |
7556d4a4 | 596 | int relocated = 0; |
dde08ee1 PA |
597 | |
598 | p = buf + strlen ("qRelocInsn:"); | |
599 | pp = unpack_varlen_hex (p, &ul); | |
600 | if (*pp != ';') | |
cb91c06a | 601 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
602 | from = ul; |
603 | ||
604 | p = pp + 1; | |
a9cbf802 | 605 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
606 | to = ul; |
607 | ||
608 | org_to = to; | |
609 | ||
492d29ea | 610 | TRY |
dde08ee1 | 611 | { |
f5656ead | 612 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 613 | relocated = 1; |
dde08ee1 | 614 | } |
492d29ea | 615 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
616 | { |
617 | if (ex.error == MEMORY_ERROR) | |
618 | { | |
619 | /* Propagate memory errors silently back to the | |
620 | target. The stub may have limited the range of | |
621 | addresses we can write to, for example. */ | |
622 | } | |
623 | else | |
624 | { | |
625 | /* Something unexpectedly bad happened. Be verbose | |
626 | so we can tell what, and propagate the error back | |
627 | to the stub, so it doesn't get stuck waiting for | |
628 | a response. */ | |
629 | exception_fprintf (gdb_stderr, ex, | |
630 | _("warning: relocating instruction: ")); | |
631 | } | |
632 | putpkt ("E01"); | |
633 | } | |
492d29ea | 634 | END_CATCH |
7556d4a4 PA |
635 | |
636 | if (relocated) | |
dde08ee1 PA |
637 | { |
638 | adjusted_size = to - org_to; | |
639 | ||
bba74b36 | 640 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
641 | putpkt (buf); |
642 | } | |
dde08ee1 | 643 | } |
ad91cd99 | 644 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
645 | remote_console_output (buf + 1); /* 'O' message from stub */ |
646 | else | |
0df8b418 | 647 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
648 | } |
649 | while (1); | |
650 | } | |
3c3bea1c | 651 | |
d01949b6 AC |
652 | /* Handle for retreving the remote protocol data from gdbarch. */ |
653 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
654 | ||
ea9c271d DJ |
655 | static struct remote_arch_state * |
656 | get_remote_arch_state (void) | |
d01949b6 | 657 | { |
17d8546e | 658 | gdb_assert (target_gdbarch () != NULL); |
19ba03f4 SM |
659 | return ((struct remote_arch_state *) |
660 | gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle)); | |
d01949b6 AC |
661 | } |
662 | ||
0b83947e DJ |
663 | /* Fetch the global remote target state. */ |
664 | ||
665 | static struct remote_state * | |
666 | get_remote_state (void) | |
667 | { | |
668 | /* Make sure that the remote architecture state has been | |
669 | initialized, because doing so might reallocate rs->buf. Any | |
670 | function which calls getpkt also needs to be mindful of changes | |
671 | to rs->buf, but this call limits the number of places which run | |
672 | into trouble. */ | |
673 | get_remote_arch_state (); | |
674 | ||
675 | return get_remote_state_raw (); | |
676 | } | |
677 | ||
94585166 DB |
678 | /* Cleanup routine for the remote module's pspace data. */ |
679 | ||
680 | static void | |
681 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
682 | { | |
19ba03f4 | 683 | char *remote_exec_file = (char *) arg; |
94585166 DB |
684 | |
685 | xfree (remote_exec_file); | |
686 | } | |
687 | ||
688 | /* Fetch the remote exec-file from the current program space. */ | |
689 | ||
690 | static const char * | |
691 | get_remote_exec_file (void) | |
692 | { | |
693 | char *remote_exec_file; | |
694 | ||
19ba03f4 SM |
695 | remote_exec_file |
696 | = (char *) program_space_data (current_program_space, | |
697 | remote_pspace_data); | |
94585166 DB |
698 | if (remote_exec_file == NULL) |
699 | return ""; | |
700 | ||
701 | return remote_exec_file; | |
702 | } | |
703 | ||
704 | /* Set the remote exec file for PSPACE. */ | |
705 | ||
706 | static void | |
707 | set_pspace_remote_exec_file (struct program_space *pspace, | |
708 | char *remote_exec_file) | |
709 | { | |
19ba03f4 | 710 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
711 | |
712 | xfree (old_file); | |
713 | set_program_space_data (pspace, remote_pspace_data, | |
714 | xstrdup (remote_exec_file)); | |
715 | } | |
716 | ||
717 | /* The "set/show remote exec-file" set command hook. */ | |
718 | ||
719 | static void | |
720 | set_remote_exec_file (char *ignored, int from_tty, | |
721 | struct cmd_list_element *c) | |
722 | { | |
723 | gdb_assert (remote_exec_file_var != NULL); | |
724 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
725 | } | |
726 | ||
727 | /* The "set/show remote exec-file" show command hook. */ | |
728 | ||
729 | static void | |
730 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
731 | struct cmd_list_element *cmd, const char *value) | |
732 | { | |
733 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
734 | } | |
735 | ||
74ca34ce DJ |
736 | static int |
737 | compare_pnums (const void *lhs_, const void *rhs_) | |
738 | { | |
19ba03f4 SM |
739 | const struct packet_reg * const *lhs |
740 | = (const struct packet_reg * const *) lhs_; | |
741 | const struct packet_reg * const *rhs | |
742 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
743 | |
744 | if ((*lhs)->pnum < (*rhs)->pnum) | |
745 | return -1; | |
746 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
747 | return 0; | |
748 | else | |
749 | return 1; | |
750 | } | |
751 | ||
c21236dc PA |
752 | static int |
753 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 754 | { |
74ca34ce | 755 | int regnum, num_remote_regs, offset; |
74ca34ce | 756 | struct packet_reg **remote_regs; |
ea9c271d | 757 | |
4a22f64d | 758 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 759 | { |
c21236dc | 760 | struct packet_reg *r = ®s[regnum]; |
baef701f | 761 | |
4a22f64d | 762 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
763 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
764 | r->pnum = -1; | |
765 | else | |
766 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
767 | ||
b323314b | 768 | r->regnum = regnum; |
74ca34ce DJ |
769 | } |
770 | ||
771 | /* Define the g/G packet format as the contents of each register | |
772 | with a remote protocol number, in order of ascending protocol | |
773 | number. */ | |
774 | ||
224c3ddb | 775 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 776 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 777 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 778 | regnum++) |
c21236dc PA |
779 | if (regs[regnum].pnum != -1) |
780 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 781 | |
74ca34ce DJ |
782 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
783 | compare_pnums); | |
784 | ||
785 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
786 | { | |
787 | remote_regs[regnum]->in_g_packet = 1; | |
788 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 789 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
790 | } |
791 | ||
c21236dc PA |
792 | return offset; |
793 | } | |
794 | ||
795 | /* Given the architecture described by GDBARCH, return the remote | |
796 | protocol register's number and the register's offset in the g/G | |
797 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
798 | If the target does not have a mapping for REGNUM, return false, | |
799 | otherwise, return true. */ | |
800 | ||
801 | int | |
802 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
803 | int *pnum, int *poffset) | |
804 | { | |
c21236dc PA |
805 | struct packet_reg *regs; |
806 | struct cleanup *old_chain; | |
807 | ||
808 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
809 | ||
224c3ddb | 810 | regs = XCNEWVEC (struct packet_reg, gdbarch_num_regs (gdbarch)); |
c21236dc PA |
811 | old_chain = make_cleanup (xfree, regs); |
812 | ||
54887903 | 813 | map_regcache_remote_table (gdbarch, regs); |
c21236dc PA |
814 | |
815 | *pnum = regs[regnum].pnum; | |
816 | *poffset = regs[regnum].offset; | |
817 | ||
818 | do_cleanups (old_chain); | |
819 | ||
820 | return *pnum != -1; | |
821 | } | |
822 | ||
823 | static void * | |
824 | init_remote_state (struct gdbarch *gdbarch) | |
825 | { | |
826 | struct remote_state *rs = get_remote_state_raw (); | |
827 | struct remote_arch_state *rsa; | |
828 | ||
829 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
830 | ||
831 | /* Use the architecture to build a regnum<->pnum table, which will be | |
832 | 1:1 unless a feature set specifies otherwise. */ | |
833 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
834 | gdbarch_num_regs (gdbarch), | |
835 | struct packet_reg); | |
836 | ||
74ca34ce DJ |
837 | /* Record the maximum possible size of the g packet - it may turn out |
838 | to be smaller. */ | |
c21236dc | 839 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 840 | |
0df8b418 | 841 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
842 | remote stubs have a hardwired buffer size of 400 bytes |
843 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
844 | as the maximum packet-size to ensure that the packet and an extra | |
845 | NUL character can always fit in the buffer. This stops GDB | |
846 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
847 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
848 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 849 | |
ea9c271d DJ |
850 | /* This one is filled in when a ``g'' packet is received. */ |
851 | rsa->actual_register_packet_size = 0; | |
852 | ||
853 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
854 | default, adjust the size accordingly. Remember that each byte is |
855 | encoded as two characters. 32 is the overhead for the packet | |
856 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 857 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 858 | little. */ |
ea9c271d DJ |
859 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
860 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 861 | |
ea9c271d DJ |
862 | /* Make sure that the packet buffer is plenty big enough for |
863 | this architecture. */ | |
864 | if (rs->buf_size < rsa->remote_packet_size) | |
865 | { | |
866 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 867 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 868 | } |
6d820c5c | 869 | |
ea9c271d DJ |
870 | return rsa; |
871 | } | |
872 | ||
873 | /* Return the current allowed size of a remote packet. This is | |
874 | inferred from the current architecture, and should be used to | |
875 | limit the length of outgoing packets. */ | |
876 | static long | |
877 | get_remote_packet_size (void) | |
878 | { | |
be2a5f71 | 879 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
880 | struct remote_arch_state *rsa = get_remote_arch_state (); |
881 | ||
be2a5f71 DJ |
882 | if (rs->explicit_packet_size) |
883 | return rs->explicit_packet_size; | |
884 | ||
ea9c271d | 885 | return rsa->remote_packet_size; |
d01949b6 AC |
886 | } |
887 | ||
ad10f812 | 888 | static struct packet_reg * |
ea9c271d | 889 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 890 | { |
f5656ead | 891 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
892 | return NULL; |
893 | else | |
ad10f812 | 894 | { |
ea9c271d | 895 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 896 | |
b323314b AC |
897 | gdb_assert (r->regnum == regnum); |
898 | return r; | |
ad10f812 | 899 | } |
ad10f812 AC |
900 | } |
901 | ||
902 | static struct packet_reg * | |
ea9c271d | 903 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 904 | { |
b323314b | 905 | int i; |
a744cf53 | 906 | |
f5656ead | 907 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 908 | { |
ea9c271d | 909 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 910 | |
b323314b AC |
911 | if (r->pnum == pnum) |
912 | return r; | |
ad10f812 AC |
913 | } |
914 | return NULL; | |
d01949b6 AC |
915 | } |
916 | ||
c906108c SS |
917 | static struct target_ops remote_ops; |
918 | ||
919 | static struct target_ops extended_remote_ops; | |
920 | ||
6426a772 JM |
921 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
922 | ``forever'' still use the normal timeout mechanism. This is | |
923 | currently used by the ASYNC code to guarentee that target reads | |
924 | during the initial connect always time-out. Once getpkt has been | |
925 | modified to return a timeout indication and, in turn | |
926 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 927 | this can go away. */ |
6426a772 JM |
928 | static int wait_forever_enabled_p = 1; |
929 | ||
9a7071a8 JB |
930 | /* Allow the user to specify what sequence to send to the remote |
931 | when he requests a program interruption: Although ^C is usually | |
932 | what remote systems expect (this is the default, here), it is | |
933 | sometimes preferable to send a break. On other systems such | |
934 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
935 | is required in order to interrupt the execution. */ | |
936 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
937 | const char interrupt_sequence_break[] = "BREAK"; | |
938 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 939 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
940 | { |
941 | interrupt_sequence_control_c, | |
942 | interrupt_sequence_break, | |
943 | interrupt_sequence_break_g, | |
944 | NULL | |
945 | }; | |
946 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
947 | ||
948 | static void | |
949 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
950 | struct cmd_list_element *c, | |
951 | const char *value) | |
952 | { | |
953 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
954 | fprintf_filtered (file, | |
955 | _("Send the ASCII ETX character (Ctrl-c) " | |
956 | "to the remote target to interrupt the " | |
957 | "execution of the program.\n")); | |
958 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
959 | fprintf_filtered (file, | |
960 | _("send a break signal to the remote target " | |
961 | "to interrupt the execution of the program.\n")); | |
962 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
963 | fprintf_filtered (file, | |
964 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
965 | "the remote target to interrupt the execution " | |
966 | "of Linux kernel.\n")); | |
967 | else | |
968 | internal_error (__FILE__, __LINE__, | |
969 | _("Invalid value for interrupt_sequence_mode: %s."), | |
970 | interrupt_sequence_mode); | |
971 | } | |
6426a772 | 972 | |
9a7071a8 JB |
973 | /* This boolean variable specifies whether interrupt_sequence is sent |
974 | to the remote target when gdb connects to it. | |
975 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
976 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
977 | static int interrupt_on_connect = 0; | |
c906108c | 978 | |
9a7071a8 JB |
979 | /* This variable is used to implement the "set/show remotebreak" commands. |
980 | Since these commands are now deprecated in favor of "set/show remote | |
981 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
982 | static int remote_break; |
983 | ||
9a7071a8 JB |
984 | static void |
985 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
986 | { | |
987 | if (remote_break) | |
988 | interrupt_sequence_mode = interrupt_sequence_break; | |
989 | else | |
990 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
991 | } | |
992 | ||
993 | static void | |
994 | show_remotebreak (struct ui_file *file, int from_tty, | |
995 | struct cmd_list_element *c, | |
996 | const char *value) | |
997 | { | |
998 | } | |
999 | ||
c906108c SS |
1000 | /* This variable sets the number of bits in an address that are to be |
1001 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1002 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1003 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1004 | initial implementation of remote.c restricted the address sent in | |
1005 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1006 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1007 | address was never sent. Since fixing this bug may cause a break in | |
1008 | some remote targets this variable is principly provided to | |
23860348 | 1009 | facilitate backward compatibility. */ |
c906108c | 1010 | |
883b9c6c | 1011 | static unsigned int remote_address_size; |
c906108c | 1012 | |
75c99385 PA |
1013 | /* Temporary to track who currently owns the terminal. See |
1014 | remote_terminal_* for more details. */ | |
6426a772 JM |
1015 | |
1016 | static int remote_async_terminal_ours_p; | |
1017 | ||
11cf8741 | 1018 | \f |
11cf8741 | 1019 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1020 | memory read/write packet. MIN (rsa->remote_packet_size, |
1021 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1022 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1023 | (speed up transfers). The variables ``preferred_*'' (the user |
1024 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1025 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1026 | |
1027 | struct memory_packet_config | |
1028 | { | |
a121b7c1 | 1029 | const char *name; |
11cf8741 JM |
1030 | long size; |
1031 | int fixed_p; | |
1032 | }; | |
1033 | ||
a5c0808e PA |
1034 | /* The default max memory-write-packet-size. The 16k is historical. |
1035 | (It came from older GDB's using alloca for buffers and the | |
1036 | knowledge (folklore?) that some hosts don't cope very well with | |
1037 | large alloca calls.) */ | |
1038 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1039 | ||
1040 | /* The minimum remote packet size for memory transfers. Ensures we | |
1041 | can write at least one byte. */ | |
1042 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1043 | ||
11cf8741 JM |
1044 | /* Compute the current size of a read/write packet. Since this makes |
1045 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1046 | ||
1047 | static long | |
1048 | get_memory_packet_size (struct memory_packet_config *config) | |
1049 | { | |
d01949b6 | 1050 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1051 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1052 | ||
11cf8741 JM |
1053 | long what_they_get; |
1054 | if (config->fixed_p) | |
1055 | { | |
1056 | if (config->size <= 0) | |
a5c0808e | 1057 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1058 | else |
1059 | what_they_get = config->size; | |
1060 | } | |
1061 | else | |
1062 | { | |
ea9c271d | 1063 | what_they_get = get_remote_packet_size (); |
23860348 | 1064 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1065 | if (config->size > 0 |
1066 | && what_they_get > config->size) | |
1067 | what_they_get = config->size; | |
be2a5f71 DJ |
1068 | |
1069 | /* Limit it to the size of the targets ``g'' response unless we have | |
1070 | permission from the stub to use a larger packet size. */ | |
1071 | if (rs->explicit_packet_size == 0 | |
1072 | && rsa->actual_register_packet_size > 0 | |
1073 | && what_they_get > rsa->actual_register_packet_size) | |
1074 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1075 | } |
a5c0808e PA |
1076 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1077 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1078 | |
1079 | /* Make sure there is room in the global buffer for this packet | |
1080 | (including its trailing NUL byte). */ | |
1081 | if (rs->buf_size < what_they_get + 1) | |
1082 | { | |
1083 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1084 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1085 | } |
1086 | ||
11cf8741 JM |
1087 | return what_they_get; |
1088 | } | |
1089 | ||
0df8b418 | 1090 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1091 | something really big then do a sanity check. */ |
11cf8741 JM |
1092 | |
1093 | static void | |
1094 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1095 | { | |
1096 | int fixed_p = config->fixed_p; | |
1097 | long size = config->size; | |
a744cf53 | 1098 | |
11cf8741 | 1099 | if (args == NULL) |
8a3fe4f8 | 1100 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1101 | else if (strcmp (args, "hard") == 0 |
1102 | || strcmp (args, "fixed") == 0) | |
1103 | fixed_p = 1; | |
1104 | else if (strcmp (args, "soft") == 0 | |
1105 | || strcmp (args, "limit") == 0) | |
1106 | fixed_p = 0; | |
1107 | else | |
1108 | { | |
1109 | char *end; | |
a744cf53 | 1110 | |
11cf8741 JM |
1111 | size = strtoul (args, &end, 0); |
1112 | if (args == end) | |
8a3fe4f8 | 1113 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1114 | |
1115 | /* Instead of explicitly capping the size of a packet to or | |
1116 | disallowing it, the user is allowed to set the size to | |
1117 | something arbitrarily large. */ | |
11cf8741 | 1118 | } |
a5c0808e PA |
1119 | |
1120 | /* So that the query shows the correct value. */ | |
1121 | if (size <= 0) | |
1122 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1123 | ||
23860348 | 1124 | /* Extra checks? */ |
11cf8741 JM |
1125 | if (fixed_p && !config->fixed_p) |
1126 | { | |
e2e0b3e5 AC |
1127 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1128 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1129 | config->name, size)) |
8a3fe4f8 | 1130 | error (_("Packet size not changed.")); |
11cf8741 | 1131 | } |
23860348 | 1132 | /* Update the config. */ |
11cf8741 JM |
1133 | config->fixed_p = fixed_p; |
1134 | config->size = size; | |
1135 | } | |
1136 | ||
1137 | static void | |
1138 | show_memory_packet_size (struct memory_packet_config *config) | |
1139 | { | |
a3f17187 | 1140 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1141 | if (config->fixed_p) |
a3f17187 | 1142 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1143 | get_memory_packet_size (config)); |
1144 | else | |
a3f17187 | 1145 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1146 | get_memory_packet_size (config)); |
1147 | } | |
1148 | ||
1149 | static struct memory_packet_config memory_write_packet_config = | |
1150 | { | |
1151 | "memory-write-packet-size", | |
1152 | }; | |
1153 | ||
1154 | static void | |
1155 | set_memory_write_packet_size (char *args, int from_tty) | |
1156 | { | |
1157 | set_memory_packet_size (args, &memory_write_packet_config); | |
1158 | } | |
1159 | ||
1160 | static void | |
1161 | show_memory_write_packet_size (char *args, int from_tty) | |
1162 | { | |
1163 | show_memory_packet_size (&memory_write_packet_config); | |
1164 | } | |
1165 | ||
1166 | static long | |
1167 | get_memory_write_packet_size (void) | |
1168 | { | |
1169 | return get_memory_packet_size (&memory_write_packet_config); | |
1170 | } | |
1171 | ||
1172 | static struct memory_packet_config memory_read_packet_config = | |
1173 | { | |
1174 | "memory-read-packet-size", | |
1175 | }; | |
1176 | ||
1177 | static void | |
1178 | set_memory_read_packet_size (char *args, int from_tty) | |
1179 | { | |
1180 | set_memory_packet_size (args, &memory_read_packet_config); | |
1181 | } | |
1182 | ||
1183 | static void | |
1184 | show_memory_read_packet_size (char *args, int from_tty) | |
1185 | { | |
1186 | show_memory_packet_size (&memory_read_packet_config); | |
1187 | } | |
1188 | ||
1189 | static long | |
1190 | get_memory_read_packet_size (void) | |
1191 | { | |
1192 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1193 | |
11cf8741 JM |
1194 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1195 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1196 | increased beyond this. */ |
1197 | if (size > get_remote_packet_size ()) | |
1198 | size = get_remote_packet_size (); | |
11cf8741 JM |
1199 | return size; |
1200 | } | |
1201 | ||
11cf8741 | 1202 | \f |
5a2468f5 | 1203 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1204 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1205 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1206 | |
1207 | enum packet_support | |
1208 | { | |
1209 | PACKET_SUPPORT_UNKNOWN = 0, | |
1210 | PACKET_ENABLE, | |
1211 | PACKET_DISABLE | |
1212 | }; | |
1213 | ||
5a2468f5 JM |
1214 | struct packet_config |
1215 | { | |
bb572ddd DJ |
1216 | const char *name; |
1217 | const char *title; | |
4082afcc PA |
1218 | |
1219 | /* If auto, GDB auto-detects support for this packet or feature, | |
1220 | either through qSupported, or by trying the packet and looking | |
1221 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1222 | packet. If false, the packet is disabled. Configs that don't |
1223 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1224 | enum auto_boolean detect; |
4082afcc PA |
1225 | |
1226 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1227 | enum packet_support support; |
1228 | }; | |
1229 | ||
d471ea57 | 1230 | /* Analyze a packet's return value and update the packet config |
23860348 | 1231 | accordingly. */ |
d471ea57 AC |
1232 | |
1233 | enum packet_result | |
1234 | { | |
1235 | PACKET_ERROR, | |
1236 | PACKET_OK, | |
1237 | PACKET_UNKNOWN | |
1238 | }; | |
1239 | ||
4082afcc PA |
1240 | static enum packet_support packet_config_support (struct packet_config *config); |
1241 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1242 | |
1243 | static void | |
fba45db2 | 1244 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1245 | { |
a121b7c1 | 1246 | const char *support = "internal-error"; |
a744cf53 | 1247 | |
4082afcc | 1248 | switch (packet_config_support (config)) |
5a2468f5 JM |
1249 | { |
1250 | case PACKET_ENABLE: | |
1251 | support = "enabled"; | |
1252 | break; | |
1253 | case PACKET_DISABLE: | |
1254 | support = "disabled"; | |
1255 | break; | |
1256 | case PACKET_SUPPORT_UNKNOWN: | |
1257 | support = "unknown"; | |
1258 | break; | |
1259 | } | |
1260 | switch (config->detect) | |
1261 | { | |
7f19b9a2 | 1262 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1263 | printf_filtered (_("Support for the `%s' packet " |
1264 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1265 | config->name, support); |
5a2468f5 | 1266 | break; |
7f19b9a2 AC |
1267 | case AUTO_BOOLEAN_TRUE: |
1268 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1269 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1270 | config->name, support); | |
8e248173 | 1271 | break; |
5a2468f5 JM |
1272 | } |
1273 | } | |
1274 | ||
1275 | static void | |
bb572ddd DJ |
1276 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1277 | const char *title, int legacy) | |
d471ea57 | 1278 | { |
5a2468f5 JM |
1279 | char *set_doc; |
1280 | char *show_doc; | |
d471ea57 | 1281 | char *cmd_name; |
3ed07be4 | 1282 | |
5a2468f5 JM |
1283 | config->name = name; |
1284 | config->title = title; | |
b435e160 AC |
1285 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1286 | name, title); | |
3e43a32a MS |
1287 | show_doc = xstrprintf ("Show current use of remote " |
1288 | "protocol `%s' (%s) packet", | |
b435e160 | 1289 | name, title); |
d471ea57 | 1290 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1291 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1292 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1293 | &config->detect, set_doc, |
1294 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1295 | NULL, |
bb572ddd DJ |
1296 | show_remote_protocol_packet_cmd, |
1297 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1298 | /* The command code copies the documentation strings. */ |
1299 | xfree (set_doc); | |
1300 | xfree (show_doc); | |
23860348 | 1301 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1302 | if (legacy) |
1303 | { | |
1304 | char *legacy_name; | |
a744cf53 | 1305 | |
b435e160 | 1306 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1307 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1308 | &remote_set_cmdlist); |
d471ea57 | 1309 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1310 | &remote_show_cmdlist); |
d471ea57 | 1311 | } |
5a2468f5 JM |
1312 | } |
1313 | ||
d471ea57 | 1314 | static enum packet_result |
a76d924d | 1315 | packet_check_result (const char *buf) |
5a2468f5 | 1316 | { |
d471ea57 | 1317 | if (buf[0] != '\0') |
5a2468f5 | 1318 | { |
d471ea57 | 1319 | /* The stub recognized the packet request. Check that the |
23860348 | 1320 | operation succeeded. */ |
a76d924d DJ |
1321 | if (buf[0] == 'E' |
1322 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1323 | && buf[3] == '\0') | |
1324 | /* "Enn" - definitly an error. */ | |
1325 | return PACKET_ERROR; | |
1326 | ||
1327 | /* Always treat "E." as an error. This will be used for | |
1328 | more verbose error messages, such as E.memtypes. */ | |
1329 | if (buf[0] == 'E' && buf[1] == '.') | |
1330 | return PACKET_ERROR; | |
1331 | ||
1332 | /* The packet may or may not be OK. Just assume it is. */ | |
1333 | return PACKET_OK; | |
1334 | } | |
1335 | else | |
1336 | /* The stub does not support the packet. */ | |
1337 | return PACKET_UNKNOWN; | |
1338 | } | |
1339 | ||
1340 | static enum packet_result | |
1341 | packet_ok (const char *buf, struct packet_config *config) | |
1342 | { | |
1343 | enum packet_result result; | |
1344 | ||
4082afcc PA |
1345 | if (config->detect != AUTO_BOOLEAN_TRUE |
1346 | && config->support == PACKET_DISABLE) | |
1347 | internal_error (__FILE__, __LINE__, | |
1348 | _("packet_ok: attempt to use a disabled packet")); | |
1349 | ||
a76d924d DJ |
1350 | result = packet_check_result (buf); |
1351 | switch (result) | |
1352 | { | |
1353 | case PACKET_OK: | |
1354 | case PACKET_ERROR: | |
1355 | /* The stub recognized the packet request. */ | |
4082afcc | 1356 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1357 | { |
d471ea57 AC |
1358 | if (remote_debug) |
1359 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1360 | "Packet %s (%s) is supported\n", |
1361 | config->name, config->title); | |
d471ea57 | 1362 | config->support = PACKET_ENABLE; |
d471ea57 | 1363 | } |
a76d924d DJ |
1364 | break; |
1365 | case PACKET_UNKNOWN: | |
23860348 | 1366 | /* The stub does not support the packet. */ |
4082afcc PA |
1367 | if (config->detect == AUTO_BOOLEAN_AUTO |
1368 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1369 | { |
4082afcc PA |
1370 | /* If the stub previously indicated that the packet was |
1371 | supported then there is a protocol error. */ | |
1372 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1373 | config->name, config->title); | |
1374 | } | |
1375 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1376 | { | |
1377 | /* The user set it wrong. */ | |
1378 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1379 | config->name, config->title); | |
d471ea57 | 1380 | } |
4082afcc PA |
1381 | |
1382 | if (remote_debug) | |
1383 | fprintf_unfiltered (gdb_stdlog, | |
1384 | "Packet %s (%s) is NOT supported\n", | |
1385 | config->name, config->title); | |
1386 | config->support = PACKET_DISABLE; | |
a76d924d | 1387 | break; |
5a2468f5 | 1388 | } |
a76d924d DJ |
1389 | |
1390 | return result; | |
5a2468f5 JM |
1391 | } |
1392 | ||
444abaca DJ |
1393 | enum { |
1394 | PACKET_vCont = 0, | |
1395 | PACKET_X, | |
1396 | PACKET_qSymbol, | |
1397 | PACKET_P, | |
1398 | PACKET_p, | |
1399 | PACKET_Z0, | |
1400 | PACKET_Z1, | |
1401 | PACKET_Z2, | |
1402 | PACKET_Z3, | |
1403 | PACKET_Z4, | |
15a201c8 | 1404 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1405 | PACKET_vFile_open, |
1406 | PACKET_vFile_pread, | |
1407 | PACKET_vFile_pwrite, | |
1408 | PACKET_vFile_close, | |
1409 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1410 | PACKET_vFile_readlink, |
0a93529c | 1411 | PACKET_vFile_fstat, |
0876f84a | 1412 | PACKET_qXfer_auxv, |
23181151 | 1413 | PACKET_qXfer_features, |
c78fa86a | 1414 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1415 | PACKET_qXfer_libraries, |
2268b414 | 1416 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1417 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1418 | PACKET_qXfer_spu_read, |
1419 | PACKET_qXfer_spu_write, | |
07e059b5 | 1420 | PACKET_qXfer_osdata, |
dc146f7c | 1421 | PACKET_qXfer_threads, |
0fb4aa4b | 1422 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1423 | PACKET_qXfer_traceframe_info, |
169081d0 | 1424 | PACKET_qXfer_uib, |
711e434b | 1425 | PACKET_qGetTIBAddr, |
444abaca | 1426 | PACKET_qGetTLSAddr, |
be2a5f71 | 1427 | PACKET_qSupported, |
bd3eecc3 | 1428 | PACKET_qTStatus, |
89be2091 | 1429 | PACKET_QPassSignals, |
82075af2 | 1430 | PACKET_QCatchSyscalls, |
9b224c5e | 1431 | PACKET_QProgramSignals, |
aefd8b33 | 1432 | PACKET_QStartupWithShell, |
936d2992 | 1433 | PACKET_qCRC, |
08388c79 | 1434 | PACKET_qSearch_memory, |
2d717e4f DJ |
1435 | PACKET_vAttach, |
1436 | PACKET_vRun, | |
a6f3e723 | 1437 | PACKET_QStartNoAckMode, |
82f73884 | 1438 | PACKET_vKill, |
4aa995e1 PA |
1439 | PACKET_qXfer_siginfo_read, |
1440 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1441 | PACKET_qAttached, |
4082afcc PA |
1442 | |
1443 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1444 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1445 | |
1446 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1447 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1448 | |
1449 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1450 | PACKET_BreakpointCommands, |
4082afcc PA |
1451 | |
1452 | /* Support for fast tracepoints. */ | |
7a697b8d | 1453 | PACKET_FastTracepoints, |
4082afcc PA |
1454 | |
1455 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1456 | PACKET_StaticTracepoints, |
4082afcc PA |
1457 | |
1458 | /* Support for installing tracepoints while a trace experiment is | |
1459 | running. */ | |
1e4d1764 | 1460 | PACKET_InstallInTrace, |
4082afcc | 1461 | |
40ab02ce MS |
1462 | PACKET_bc, |
1463 | PACKET_bs, | |
409873ef | 1464 | PACKET_TracepointSource, |
d914c394 | 1465 | PACKET_QAllow, |
78d85199 | 1466 | PACKET_qXfer_fdpic, |
03583c20 | 1467 | PACKET_QDisableRandomization, |
d1feda86 | 1468 | PACKET_QAgent, |
f6f899bf | 1469 | PACKET_QTBuffer_size, |
9accd112 MM |
1470 | PACKET_Qbtrace_off, |
1471 | PACKET_Qbtrace_bts, | |
b20a6524 | 1472 | PACKET_Qbtrace_pt, |
9accd112 | 1473 | PACKET_qXfer_btrace, |
4082afcc PA |
1474 | |
1475 | /* Support for the QNonStop packet. */ | |
1476 | PACKET_QNonStop, | |
1477 | ||
65706a29 PA |
1478 | /* Support for the QThreadEvents packet. */ |
1479 | PACKET_QThreadEvents, | |
1480 | ||
4082afcc PA |
1481 | /* Support for multi-process extensions. */ |
1482 | PACKET_multiprocess_feature, | |
1483 | ||
1484 | /* Support for enabling and disabling tracepoints while a trace | |
1485 | experiment is running. */ | |
1486 | PACKET_EnableDisableTracepoints_feature, | |
1487 | ||
1488 | /* Support for collecting strings using the tracenz bytecode. */ | |
1489 | PACKET_tracenz_feature, | |
1490 | ||
1491 | /* Support for continuing to run a trace experiment while GDB is | |
1492 | disconnected. */ | |
1493 | PACKET_DisconnectedTracing_feature, | |
1494 | ||
1495 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1496 | PACKET_augmented_libraries_svr4_read_feature, | |
1497 | ||
f4abbc16 MM |
1498 | /* Support for the qXfer:btrace-conf:read packet. */ |
1499 | PACKET_qXfer_btrace_conf, | |
1500 | ||
d33501a5 MM |
1501 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1502 | PACKET_Qbtrace_conf_bts_size, | |
1503 | ||
f7e6eed5 PA |
1504 | /* Support for swbreak+ feature. */ |
1505 | PACKET_swbreak_feature, | |
1506 | ||
1507 | /* Support for hwbreak+ feature. */ | |
1508 | PACKET_hwbreak_feature, | |
1509 | ||
89245bc0 DB |
1510 | /* Support for fork events. */ |
1511 | PACKET_fork_event_feature, | |
1512 | ||
1513 | /* Support for vfork events. */ | |
1514 | PACKET_vfork_event_feature, | |
1515 | ||
b20a6524 MM |
1516 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1517 | PACKET_Qbtrace_conf_pt_size, | |
1518 | ||
94585166 DB |
1519 | /* Support for exec events. */ |
1520 | PACKET_exec_event_feature, | |
1521 | ||
750ce8d1 YQ |
1522 | /* Support for query supported vCont actions. */ |
1523 | PACKET_vContSupported, | |
1524 | ||
de979965 PA |
1525 | /* Support remote CTRL-C. */ |
1526 | PACKET_vCtrlC, | |
1527 | ||
f2faf941 PA |
1528 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1529 | PACKET_no_resumed, | |
1530 | ||
444abaca DJ |
1531 | PACKET_MAX |
1532 | }; | |
506fb367 | 1533 | |
444abaca | 1534 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1535 | |
f7e6eed5 PA |
1536 | /* Returns the packet's corresponding "set remote foo-packet" command |
1537 | state. See struct packet_config for more details. */ | |
1538 | ||
1539 | static enum auto_boolean | |
1540 | packet_set_cmd_state (int packet) | |
1541 | { | |
1542 | return remote_protocol_packets[packet].detect; | |
1543 | } | |
1544 | ||
4082afcc PA |
1545 | /* Returns whether a given packet or feature is supported. This takes |
1546 | into account the state of the corresponding "set remote foo-packet" | |
1547 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1548 | |
4082afcc PA |
1549 | static enum packet_support |
1550 | packet_config_support (struct packet_config *config) | |
1551 | { | |
1552 | switch (config->detect) | |
444abaca | 1553 | { |
4082afcc PA |
1554 | case AUTO_BOOLEAN_TRUE: |
1555 | return PACKET_ENABLE; | |
1556 | case AUTO_BOOLEAN_FALSE: | |
1557 | return PACKET_DISABLE; | |
1558 | case AUTO_BOOLEAN_AUTO: | |
1559 | return config->support; | |
1560 | default: | |
1561 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1562 | } |
4082afcc PA |
1563 | } |
1564 | ||
1565 | /* Same as packet_config_support, but takes the packet's enum value as | |
1566 | argument. */ | |
1567 | ||
1568 | static enum packet_support | |
1569 | packet_support (int packet) | |
1570 | { | |
1571 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1572 | ||
1573 | return packet_config_support (config); | |
dc8acb97 MS |
1574 | } |
1575 | ||
5a2468f5 | 1576 | static void |
444abaca DJ |
1577 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1578 | struct cmd_list_element *c, | |
1579 | const char *value) | |
5a2468f5 | 1580 | { |
444abaca | 1581 | struct packet_config *packet; |
5a2468f5 | 1582 | |
444abaca DJ |
1583 | for (packet = remote_protocol_packets; |
1584 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1585 | packet++) | |
1586 | { | |
1587 | if (&packet->detect == c->var) | |
1588 | { | |
1589 | show_packet_config_cmd (packet); | |
1590 | return; | |
1591 | } | |
1592 | } | |
9b20d036 | 1593 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1594 | c->name); |
5a2468f5 JM |
1595 | } |
1596 | ||
d471ea57 AC |
1597 | /* Should we try one of the 'Z' requests? */ |
1598 | ||
1599 | enum Z_packet_type | |
1600 | { | |
1601 | Z_PACKET_SOFTWARE_BP, | |
1602 | Z_PACKET_HARDWARE_BP, | |
1603 | Z_PACKET_WRITE_WP, | |
1604 | Z_PACKET_READ_WP, | |
1605 | Z_PACKET_ACCESS_WP, | |
1606 | NR_Z_PACKET_TYPES | |
1607 | }; | |
96baa820 | 1608 | |
d471ea57 | 1609 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1610 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1611 | |
7f19b9a2 | 1612 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1613 | |
1614 | static void | |
fba45db2 KB |
1615 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1616 | struct cmd_list_element *c) | |
96baa820 | 1617 | { |
d471ea57 | 1618 | int i; |
a744cf53 | 1619 | |
d471ea57 | 1620 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1621 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1622 | } |
1623 | ||
1624 | static void | |
08546159 AC |
1625 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1626 | struct cmd_list_element *c, | |
1627 | const char *value) | |
96baa820 | 1628 | { |
d471ea57 | 1629 | int i; |
a744cf53 | 1630 | |
d471ea57 AC |
1631 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1632 | { | |
444abaca | 1633 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1634 | } |
96baa820 JM |
1635 | } |
1636 | ||
4082afcc PA |
1637 | /* Returns true if the multi-process extensions are in effect. */ |
1638 | ||
1639 | static int | |
1640 | remote_multi_process_p (struct remote_state *rs) | |
1641 | { | |
1642 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1643 | } | |
1644 | ||
de0d863e DB |
1645 | /* Returns true if fork events are supported. */ |
1646 | ||
1647 | static int | |
1648 | remote_fork_event_p (struct remote_state *rs) | |
1649 | { | |
1650 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1651 | } | |
1652 | ||
c269dbdb DB |
1653 | /* Returns true if vfork events are supported. */ |
1654 | ||
1655 | static int | |
1656 | remote_vfork_event_p (struct remote_state *rs) | |
1657 | { | |
1658 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1659 | } | |
1660 | ||
d46addbb DB |
1661 | /* Returns true if exec events are supported. */ |
1662 | ||
1663 | static int | |
1664 | remote_exec_event_p (struct remote_state *rs) | |
1665 | { | |
1666 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1667 | } | |
1668 | ||
cbb8991c DB |
1669 | /* Insert fork catchpoint target routine. If fork events are enabled |
1670 | then return success, nothing more to do. */ | |
1671 | ||
1672 | static int | |
1673 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1674 | { | |
1675 | struct remote_state *rs = get_remote_state (); | |
1676 | ||
1677 | return !remote_fork_event_p (rs); | |
1678 | } | |
1679 | ||
1680 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1681 | return success. */ | |
1682 | ||
1683 | static int | |
1684 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1685 | { | |
1686 | return 0; | |
1687 | } | |
1688 | ||
1689 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1690 | then return success, nothing more to do. */ | |
1691 | ||
1692 | static int | |
1693 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1694 | { | |
1695 | struct remote_state *rs = get_remote_state (); | |
1696 | ||
1697 | return !remote_vfork_event_p (rs); | |
1698 | } | |
1699 | ||
1700 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1701 | return success. */ | |
1702 | ||
1703 | static int | |
1704 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1705 | { | |
1706 | return 0; | |
1707 | } | |
1708 | ||
d46addbb DB |
1709 | /* Insert exec catchpoint target routine. If exec events are |
1710 | enabled, just return success. */ | |
1711 | ||
1712 | static int | |
1713 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1714 | { | |
1715 | struct remote_state *rs = get_remote_state (); | |
1716 | ||
1717 | return !remote_exec_event_p (rs); | |
1718 | } | |
1719 | ||
1720 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1721 | return success. */ | |
1722 | ||
1723 | static int | |
1724 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1725 | { | |
1726 | return 0; | |
1727 | } | |
1728 | ||
74531fed PA |
1729 | \f |
1730 | /* Asynchronous signal handle registered as event loop source for | |
1731 | when we have pending events ready to be passed to the core. */ | |
1732 | ||
1733 | static struct async_event_handler *remote_async_inferior_event_token; | |
1734 | ||
c906108c SS |
1735 | \f |
1736 | ||
79d7f229 PA |
1737 | static ptid_t magic_null_ptid; |
1738 | static ptid_t not_sent_ptid; | |
1739 | static ptid_t any_thread_ptid; | |
1740 | ||
0b16c5cf PA |
1741 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1742 | detach instead of killing it when bailing out). */ | |
1743 | ||
1744 | static int | |
1745 | remote_query_attached (int pid) | |
1746 | { | |
1747 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1748 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1749 | |
4082afcc | 1750 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1751 | return 0; |
1752 | ||
1753 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1754 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1755 | else |
bba74b36 | 1756 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1757 | |
1758 | putpkt (rs->buf); | |
1759 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1760 | ||
1761 | switch (packet_ok (rs->buf, | |
1554e9be | 1762 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1763 | { |
1764 | case PACKET_OK: | |
1765 | if (strcmp (rs->buf, "1") == 0) | |
1766 | return 1; | |
1767 | break; | |
1768 | case PACKET_ERROR: | |
1769 | warning (_("Remote failure reply: %s"), rs->buf); | |
1770 | break; | |
1771 | case PACKET_UNKNOWN: | |
1772 | break; | |
1773 | } | |
1774 | ||
1775 | return 0; | |
1776 | } | |
1777 | ||
49c62f2e PA |
1778 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1779 | has been invented by GDB, instead of reported by the target. Since | |
1780 | we can be connected to a remote system before before knowing about | |
1781 | any inferior, mark the target with execution when we find the first | |
1782 | inferior. If ATTACHED is 1, then we had just attached to this | |
1783 | inferior. If it is 0, then we just created this inferior. If it | |
1784 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1785 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1786 | attempt to open this inferior's executable as the main executable | |
1787 | if no main executable is open already. */ | |
1941c569 PA |
1788 | |
1789 | static struct inferior * | |
1b6e6f5c GB |
1790 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1791 | int try_open_exec) | |
1941c569 | 1792 | { |
1941c569 PA |
1793 | struct inferior *inf; |
1794 | ||
0b16c5cf PA |
1795 | /* Check whether this process we're learning about is to be |
1796 | considered attached, or if is to be considered to have been | |
1797 | spawned by the stub. */ | |
1798 | if (attached == -1) | |
1799 | attached = remote_query_attached (pid); | |
1800 | ||
f5656ead | 1801 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1802 | { |
1803 | /* If the target shares code across all inferiors, then every | |
1804 | attach adds a new inferior. */ | |
1805 | inf = add_inferior (pid); | |
1806 | ||
1807 | /* ... and every inferior is bound to the same program space. | |
1808 | However, each inferior may still have its own address | |
1809 | space. */ | |
1810 | inf->aspace = maybe_new_address_space (); | |
1811 | inf->pspace = current_program_space; | |
1812 | } | |
1813 | else | |
1814 | { | |
1815 | /* In the traditional debugging scenario, there's a 1-1 match | |
1816 | between program/address spaces. We simply bind the inferior | |
1817 | to the program space's address space. */ | |
1818 | inf = current_inferior (); | |
1819 | inferior_appeared (inf, pid); | |
1820 | } | |
1941c569 | 1821 | |
0b16c5cf | 1822 | inf->attach_flag = attached; |
49c62f2e | 1823 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1824 | |
1b6e6f5c GB |
1825 | /* If no main executable is currently open then attempt to |
1826 | open the file that was executed to create this inferior. */ | |
835205d0 | 1827 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 1828 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 1829 | |
1941c569 PA |
1830 | return inf; |
1831 | } | |
1832 | ||
85ad3aaf PA |
1833 | static struct private_thread_info * |
1834 | get_private_info_thread (struct thread_info *info); | |
1835 | ||
1941c569 PA |
1836 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
1837 | according to RUNNING. */ | |
1838 | ||
c906108c | 1839 | static void |
0d5b594f | 1840 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 1841 | { |
b7ea362b | 1842 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 1843 | struct thread_info *thread; |
b7ea362b PA |
1844 | |
1845 | /* GDB historically didn't pull threads in the initial connection | |
1846 | setup. If the remote target doesn't even have a concept of | |
1847 | threads (e.g., a bare-metal target), even if internally we | |
1848 | consider that a single-threaded target, mentioning a new thread | |
1849 | might be confusing to the user. Be silent then, preserving the | |
1850 | age old behavior. */ | |
1851 | if (rs->starting_up) | |
85ad3aaf | 1852 | thread = add_thread_silent (ptid); |
b7ea362b | 1853 | else |
85ad3aaf | 1854 | thread = add_thread (ptid); |
1941c569 | 1855 | |
85ad3aaf | 1856 | get_private_info_thread (thread)->vcont_resumed = executing; |
0d5b594f | 1857 | set_executing (ptid, executing); |
1941c569 PA |
1858 | set_running (ptid, running); |
1859 | } | |
1860 | ||
1861 | /* Come here when we learn about a thread id from the remote target. | |
1862 | It may be the first time we hear about such thread, so take the | |
1863 | opportunity to add it to GDB's thread list. In case this is the | |
1864 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
1865 | GDB's inferior list as well. EXECUTING indicates whether the |
1866 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
1867 | |
1868 | static void | |
0d5b594f | 1869 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 1870 | { |
0d5b594f PA |
1871 | /* In non-stop mode, we assume new found threads are (externally) |
1872 | running until proven otherwise with a stop reply. In all-stop, | |
1873 | we can only get here if all threads are stopped. */ | |
1874 | int running = target_is_non_stop_p () ? 1 : 0; | |
1875 | ||
c906108c SS |
1876 | /* If this is a new thread, add it to GDB's thread list. |
1877 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1878 | |
1879 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1880 | { | |
1881 | /* We're seeing an event on a thread id we knew had exited. | |
1882 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 1883 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
1884 | return; |
1885 | } | |
1886 | ||
79d7f229 | 1887 | if (!in_thread_list (currthread)) |
c0a2216e | 1888 | { |
1941c569 | 1889 | struct inferior *inf = NULL; |
bad34192 | 1890 | int pid = ptid_get_pid (currthread); |
1941c569 | 1891 | |
bad34192 PA |
1892 | if (ptid_is_pid (inferior_ptid) |
1893 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1894 | { |
1895 | /* inferior_ptid has no thread member yet. This can happen | |
1896 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1897 | stub doesn't support qC. This is the first stop reported | |
1898 | after an attach, so this is the main thread. Update the | |
1899 | ptid in the thread list. */ | |
bad34192 PA |
1900 | if (in_thread_list (pid_to_ptid (pid))) |
1901 | thread_change_ptid (inferior_ptid, currthread); | |
1902 | else | |
1903 | { | |
0d5b594f | 1904 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
1905 | inferior_ptid = currthread; |
1906 | } | |
dc146f7c | 1907 | return; |
c0a2216e | 1908 | } |
82f73884 PA |
1909 | |
1910 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1911 | { |
1912 | /* inferior_ptid is not set yet. This can happen with the | |
1913 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1914 | doesn't support qC. This is the first stop reported | |
1915 | after an attach, so this is the main thread. Update the | |
1916 | ptid in the thread list. */ | |
dc146f7c | 1917 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1918 | return; |
c0a2216e | 1919 | } |
82f73884 | 1920 | |
29c87f7f PA |
1921 | /* When connecting to a target remote, or to a target |
1922 | extended-remote which already was debugging an inferior, we | |
1923 | may not know about it yet. Add it before adding its child | |
1924 | thread, so notifications are emitted in a sensible order. */ | |
1925 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1926 | { |
1927 | struct remote_state *rs = get_remote_state (); | |
1928 | int fake_pid_p = !remote_multi_process_p (rs); | |
1929 | ||
1930 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1931 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1932 | } |
29c87f7f | 1933 | |
82f73884 | 1934 | /* This is really a new thread. Add it. */ |
0d5b594f | 1935 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
1936 | |
1937 | /* If we found a new inferior, let the common code do whatever | |
1938 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1939 | breakpoints), unless we're just setting up an all-stop |
1940 | connection. */ | |
1941c569 | 1941 | if (inf != NULL) |
b7ea362b PA |
1942 | { |
1943 | struct remote_state *rs = get_remote_state (); | |
1944 | ||
6efcd9a8 | 1945 | if (!rs->starting_up) |
0d5b594f | 1946 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 1947 | } |
c0a2216e | 1948 | } |
c906108c SS |
1949 | } |
1950 | ||
85ad3aaf | 1951 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 1952 | |
70221824 | 1953 | static struct private_thread_info * |
85ad3aaf | 1954 | get_private_info_thread (struct thread_info *thread) |
dc146f7c | 1955 | { |
85ad3aaf | 1956 | gdb_assert (thread != NULL); |
dc146f7c | 1957 | |
85ad3aaf | 1958 | if (thread->priv == NULL) |
dc146f7c | 1959 | { |
85ad3aaf PA |
1960 | struct private_thread_info *priv = XNEW (struct private_thread_info); |
1961 | ||
1962 | thread->private_dtor = free_private_thread_info; | |
1963 | thread->priv = priv; | |
1964 | ||
1965 | priv->core = -1; | |
1966 | priv->extra = NULL; | |
1967 | priv->name = NULL; | |
1968 | priv->name = NULL; | |
1969 | priv->last_resume_step = 0; | |
1970 | priv->last_resume_sig = GDB_SIGNAL_0; | |
1971 | priv->vcont_resumed = 0; | |
dc146f7c VP |
1972 | } |
1973 | ||
85ad3aaf PA |
1974 | return thread->priv; |
1975 | } | |
1976 | ||
1977 | /* Return PTID's private thread data, creating it if necessary. */ | |
1978 | ||
1979 | static struct private_thread_info * | |
1980 | get_private_info_ptid (ptid_t ptid) | |
1981 | { | |
1982 | struct thread_info *info = find_thread_ptid (ptid); | |
1983 | ||
1984 | return get_private_info_thread (info); | |
dc146f7c VP |
1985 | } |
1986 | ||
74531fed PA |
1987 | /* Call this function as a result of |
1988 | 1) A halt indication (T packet) containing a thread id | |
1989 | 2) A direct query of currthread | |
0df8b418 | 1990 | 3) Successful execution of set thread */ |
74531fed PA |
1991 | |
1992 | static void | |
47f8a51d | 1993 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1994 | { |
47f8a51d | 1995 | rs->general_thread = currthread; |
74531fed PA |
1996 | } |
1997 | ||
89be2091 DJ |
1998 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1999 | it can simply pass through to the inferior without reporting. */ | |
2000 | ||
2001 | static void | |
94bedb42 TT |
2002 | remote_pass_signals (struct target_ops *self, |
2003 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 2004 | { |
4082afcc | 2005 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2006 | { |
2007 | char *pass_packet, *p; | |
89be2091 | 2008 | int count = 0, i; |
747dc59d | 2009 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
2010 | |
2011 | gdb_assert (numsigs < 256); | |
2012 | for (i = 0; i < numsigs; i++) | |
2013 | { | |
2455069d | 2014 | if (pass_signals[i]) |
89be2091 DJ |
2015 | count++; |
2016 | } | |
224c3ddb | 2017 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2018 | strcpy (pass_packet, "QPassSignals:"); |
2019 | p = pass_packet + strlen (pass_packet); | |
2020 | for (i = 0; i < numsigs; i++) | |
2021 | { | |
2455069d | 2022 | if (pass_signals[i]) |
89be2091 DJ |
2023 | { |
2024 | if (i >= 16) | |
2025 | *p++ = tohex (i >> 4); | |
2026 | *p++ = tohex (i & 15); | |
2027 | if (count) | |
2028 | *p++ = ';'; | |
2029 | else | |
2030 | break; | |
2031 | count--; | |
2032 | } | |
2033 | } | |
2034 | *p = 0; | |
747dc59d | 2035 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2036 | { |
89be2091 DJ |
2037 | putpkt (pass_packet); |
2038 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2039 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2040 | if (rs->last_pass_packet) |
2041 | xfree (rs->last_pass_packet); | |
2042 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2043 | } |
2044 | else | |
2045 | xfree (pass_packet); | |
2046 | } | |
2047 | } | |
2048 | ||
82075af2 JS |
2049 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2050 | to report syscalls to GDB. */ | |
2051 | ||
2052 | static int | |
2053 | remote_set_syscall_catchpoint (struct target_ops *self, | |
2054 | int pid, int needed, int any_count, | |
2055 | int table_size, int *table) | |
2056 | { | |
2057 | char *catch_packet; | |
2058 | enum packet_result result; | |
2059 | int n_sysno = 0; | |
2060 | ||
2061 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2062 | { | |
2063 | /* Not supported. */ | |
2064 | return 1; | |
2065 | } | |
2066 | ||
2067 | if (needed && !any_count) | |
2068 | { | |
2069 | int i; | |
2070 | ||
2071 | /* Count how many syscalls are to be caught (table[sysno] != 0). */ | |
2072 | for (i = 0; i < table_size; i++) | |
2073 | { | |
2074 | if (table[i] != 0) | |
2075 | n_sysno++; | |
2076 | } | |
2077 | } | |
2078 | ||
2079 | if (remote_debug) | |
2080 | { | |
2081 | fprintf_unfiltered (gdb_stdlog, | |
2082 | "remote_set_syscall_catchpoint " | |
2083 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2084 | pid, needed, any_count, n_sysno); | |
2085 | } | |
2086 | ||
2087 | if (needed) | |
2088 | { | |
2089 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2090 | characters for a sysno. If the resulting packet size is too | |
2091 | big, fallback on the non-selective packet. */ | |
2092 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
2093 | ||
c0518081 | 2094 | catch_packet = (char *) xmalloc (maxpktsz); |
82075af2 JS |
2095 | strcpy (catch_packet, "QCatchSyscalls:1"); |
2096 | if (!any_count) | |
2097 | { | |
2098 | int i; | |
2099 | char *p; | |
2100 | ||
2101 | p = catch_packet; | |
2102 | p += strlen (p); | |
2103 | ||
2104 | /* Add in catch_packet each syscall to be caught (table[i] != 0). */ | |
2105 | for (i = 0; i < table_size; i++) | |
2106 | { | |
2107 | if (table[i] != 0) | |
2108 | p += xsnprintf (p, catch_packet + maxpktsz - p, ";%x", i); | |
2109 | } | |
2110 | } | |
2111 | if (strlen (catch_packet) > get_remote_packet_size ()) | |
2112 | { | |
2113 | /* catch_packet too big. Fallback to less efficient | |
2114 | non selective mode, with GDB doing the filtering. */ | |
2115 | catch_packet[sizeof ("QCatchSyscalls:1") - 1] = 0; | |
2116 | } | |
2117 | } | |
2118 | else | |
2119 | catch_packet = xstrdup ("QCatchSyscalls:0"); | |
2120 | ||
2121 | { | |
2122 | struct cleanup *old_chain = make_cleanup (xfree, catch_packet); | |
2123 | struct remote_state *rs = get_remote_state (); | |
2124 | ||
2125 | putpkt (catch_packet); | |
2126 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2127 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2128 | do_cleanups (old_chain); | |
2129 | if (result == PACKET_OK) | |
2130 | return 0; | |
2131 | else | |
2132 | return -1; | |
2133 | } | |
2134 | } | |
2135 | ||
9b224c5e PA |
2136 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2137 | signals it should pass through to the inferior when detaching. */ | |
2138 | ||
2139 | static void | |
daf5e9b6 TT |
2140 | remote_program_signals (struct target_ops *self, |
2141 | int numsigs, unsigned char *signals) | |
9b224c5e | 2142 | { |
4082afcc | 2143 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2144 | { |
2145 | char *packet, *p; | |
2146 | int count = 0, i; | |
5e4a05c4 | 2147 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2148 | |
2149 | gdb_assert (numsigs < 256); | |
2150 | for (i = 0; i < numsigs; i++) | |
2151 | { | |
2152 | if (signals[i]) | |
2153 | count++; | |
2154 | } | |
224c3ddb | 2155 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2156 | strcpy (packet, "QProgramSignals:"); |
2157 | p = packet + strlen (packet); | |
2158 | for (i = 0; i < numsigs; i++) | |
2159 | { | |
2160 | if (signal_pass_state (i)) | |
2161 | { | |
2162 | if (i >= 16) | |
2163 | *p++ = tohex (i >> 4); | |
2164 | *p++ = tohex (i & 15); | |
2165 | if (count) | |
2166 | *p++ = ';'; | |
2167 | else | |
2168 | break; | |
2169 | count--; | |
2170 | } | |
2171 | } | |
2172 | *p = 0; | |
5e4a05c4 TT |
2173 | if (!rs->last_program_signals_packet |
2174 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2175 | { |
9b224c5e PA |
2176 | putpkt (packet); |
2177 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2178 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2179 | xfree (rs->last_program_signals_packet); |
2180 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2181 | } |
2182 | else | |
2183 | xfree (packet); | |
2184 | } | |
2185 | } | |
2186 | ||
79d7f229 PA |
2187 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2188 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2189 | thread. If GEN is set, set the general thread, if not, then set | |
2190 | the step/continue thread. */ | |
c906108c | 2191 | static void |
d62a8ae2 | 2192 | set_thread (ptid_t ptid, int gen) |
c906108c | 2193 | { |
d01949b6 | 2194 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2195 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2196 | char *buf = rs->buf; |
79d7f229 | 2197 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2198 | |
79d7f229 | 2199 | if (ptid_equal (state, ptid)) |
c906108c SS |
2200 | return; |
2201 | ||
79d7f229 PA |
2202 | *buf++ = 'H'; |
2203 | *buf++ = gen ? 'g' : 'c'; | |
2204 | if (ptid_equal (ptid, magic_null_ptid)) | |
2205 | xsnprintf (buf, endbuf - buf, "0"); | |
2206 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2207 | xsnprintf (buf, endbuf - buf, "0"); | |
2208 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2209 | xsnprintf (buf, endbuf - buf, "-1"); | |
2210 | else | |
82f73884 | 2211 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2212 | putpkt (rs->buf); |
6d820c5c | 2213 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2214 | if (gen) |
47f8a51d | 2215 | rs->general_thread = ptid; |
c906108c | 2216 | else |
47f8a51d | 2217 | rs->continue_thread = ptid; |
c906108c | 2218 | } |
79d7f229 PA |
2219 | |
2220 | static void | |
d62a8ae2 | 2221 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2222 | { |
2223 | set_thread (ptid, 1); | |
2224 | } | |
2225 | ||
2226 | static void | |
d62a8ae2 | 2227 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2228 | { |
2229 | set_thread (ptid, 0); | |
2230 | } | |
2231 | ||
3c9c4b83 PA |
2232 | /* Change the remote current process. Which thread within the process |
2233 | ends up selected isn't important, as long as it is the same process | |
2234 | as what INFERIOR_PTID points to. | |
2235 | ||
2236 | This comes from that fact that there is no explicit notion of | |
2237 | "selected process" in the protocol. The selected process for | |
2238 | general operations is the process the selected general thread | |
2239 | belongs to. */ | |
2240 | ||
2241 | static void | |
2242 | set_general_process (void) | |
2243 | { | |
2244 | struct remote_state *rs = get_remote_state (); | |
2245 | ||
2246 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2247 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2248 | return; |
2249 | ||
2250 | /* We only need to change the remote current thread if it's pointing | |
2251 | at some other process. */ | |
47f8a51d | 2252 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2253 | set_general_thread (inferior_ptid); |
2254 | } | |
2255 | ||
c906108c | 2256 | \f |
7d1a114c PA |
2257 | /* Return nonzero if this is the main thread that we made up ourselves |
2258 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2259 | |
2260 | static int | |
7d1a114c | 2261 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2262 | { |
c0a2216e PA |
2263 | if (ptid_equal (ptid, magic_null_ptid)) |
2264 | /* The main thread is always alive. */ | |
2265 | return 1; | |
2266 | ||
ba348170 | 2267 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2268 | /* The main thread is always alive. This can happen after a |
2269 | vAttach, if the remote side doesn't support | |
2270 | multi-threading. */ | |
2271 | return 1; | |
2272 | ||
7d1a114c PA |
2273 | return 0; |
2274 | } | |
2275 | ||
2276 | /* Return nonzero if the thread PTID is still alive on the remote | |
2277 | system. */ | |
2278 | ||
2279 | static int | |
2280 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2281 | { | |
2282 | struct remote_state *rs = get_remote_state (); | |
2283 | char *p, *endp; | |
2284 | ||
2285 | /* Check if this is a thread that we made up ourselves to model | |
2286 | non-threaded targets as single-threaded. */ | |
2287 | if (remote_thread_always_alive (ops, ptid)) | |
2288 | return 1; | |
2289 | ||
82f73884 PA |
2290 | p = rs->buf; |
2291 | endp = rs->buf + get_remote_packet_size (); | |
2292 | ||
2293 | *p++ = 'T'; | |
2294 | write_ptid (p, endp, ptid); | |
2295 | ||
2e9f7625 | 2296 | putpkt (rs->buf); |
6d820c5c | 2297 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2298 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2299 | } |
2300 | ||
79efa585 SM |
2301 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2302 | The thread_info object owns the memory for the name. */ | |
2303 | ||
2304 | static const char * | |
2305 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2306 | { | |
2307 | if (info->priv != NULL) | |
2308 | return info->priv->name; | |
2309 | ||
2310 | return NULL; | |
2311 | } | |
2312 | ||
c906108c SS |
2313 | /* About these extended threadlist and threadinfo packets. They are |
2314 | variable length packets but, the fields within them are often fixed | |
2315 | length. They are redundent enough to send over UDP as is the | |
2316 | remote protocol in general. There is a matching unit test module | |
2317 | in libstub. */ | |
2318 | ||
23860348 | 2319 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2320 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2321 | changable. */ |
cce74817 JM |
2322 | |
2323 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2324 | Plan to fix this. */ |
cce74817 | 2325 | |
23860348 | 2326 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2327 | |
9d1f7ab2 | 2328 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2329 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2330 | |
2331 | struct gdb_ext_thread_info | |
c5aa993b | 2332 | { |
23860348 | 2333 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2334 | int active; /* Has state interesting to GDB? |
23860348 | 2335 | regs, stack. */ |
2bc416ba | 2336 | char display[256]; /* Brief state display, name, |
cedea757 | 2337 | blocked/suspended. */ |
23860348 | 2338 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2339 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2340 | whatever. */ |
c5aa993b | 2341 | }; |
cce74817 JM |
2342 | |
2343 | /* The volume of remote transfers can be limited by submitting | |
2344 | a mask containing bits specifying the desired information. | |
2345 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2346 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2347 | |
2348 | #define TAG_THREADID 1 | |
2349 | #define TAG_EXISTS 2 | |
2350 | #define TAG_DISPLAY 4 | |
2351 | #define TAG_THREADNAME 8 | |
c5aa993b | 2352 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2353 | |
23860348 | 2354 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2355 | |
a14ed312 | 2356 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2357 | |
a14ed312 | 2358 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2359 | |
a14ed312 | 2360 | static char *pack_int (char *buf, int value); |
cce74817 | 2361 | |
a14ed312 | 2362 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2363 | |
a14ed312 | 2364 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2365 | |
23860348 | 2366 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2367 | |
23860348 | 2368 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2369 | |
23860348 | 2370 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2371 | |
23860348 | 2372 | static int threadref_to_int (threadref *ref); |
cce74817 | 2373 | |
23860348 | 2374 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2375 | |
23860348 | 2376 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2377 | |
2bc416ba | 2378 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2379 | threadref *id); |
cce74817 | 2380 | |
a14ed312 | 2381 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2382 | threadref *expectedref, |
a14ed312 KB |
2383 | struct gdb_ext_thread_info |
2384 | *info); | |
cce74817 JM |
2385 | |
2386 | ||
2bc416ba | 2387 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2388 | int fieldset, /*TAG mask */ |
a14ed312 | 2389 | struct gdb_ext_thread_info *info); |
cce74817 | 2390 | |
a14ed312 KB |
2391 | static char *pack_threadlist_request (char *pkt, int startflag, |
2392 | int threadcount, | |
23860348 | 2393 | threadref *nextthread); |
cce74817 | 2394 | |
a14ed312 KB |
2395 | static int parse_threadlist_response (char *pkt, |
2396 | int result_limit, | |
23860348 | 2397 | threadref *original_echo, |
2bc416ba | 2398 | threadref *resultlist, |
23860348 | 2399 | int *doneflag); |
cce74817 | 2400 | |
a14ed312 | 2401 | static int remote_get_threadlist (int startflag, |
23860348 | 2402 | threadref *nextthread, |
a14ed312 KB |
2403 | int result_limit, |
2404 | int *done, | |
2bc416ba | 2405 | int *result_count, |
23860348 | 2406 | threadref *threadlist); |
cce74817 | 2407 | |
23860348 | 2408 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2409 | |
a14ed312 KB |
2410 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2411 | void *context, int looplimit); | |
cce74817 | 2412 | |
23860348 | 2413 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2414 | |
82f73884 PA |
2415 | |
2416 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2417 | buffer we're allowed to write to. Returns | |
2418 | BUF+CHARACTERS_WRITTEN. */ | |
2419 | ||
2420 | static char * | |
2421 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2422 | { | |
2423 | int pid, tid; | |
2424 | struct remote_state *rs = get_remote_state (); | |
2425 | ||
2426 | if (remote_multi_process_p (rs)) | |
2427 | { | |
2428 | pid = ptid_get_pid (ptid); | |
2429 | if (pid < 0) | |
2430 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2431 | else | |
2432 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2433 | } | |
ba348170 | 2434 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2435 | if (tid < 0) |
2436 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2437 | else | |
2438 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2439 | ||
2440 | return buf; | |
2441 | } | |
2442 | ||
2443 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2444 | passed the last parsed char. Returns null_ptid on error. */ | |
2445 | ||
2446 | static ptid_t | |
2447 | read_ptid (char *buf, char **obuf) | |
2448 | { | |
2449 | char *p = buf; | |
2450 | char *pp; | |
2451 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2452 | |
2453 | if (*p == 'p') | |
2454 | { | |
2455 | /* Multi-process ptid. */ | |
2456 | pp = unpack_varlen_hex (p + 1, &pid); | |
2457 | if (*pp != '.') | |
b37520b6 | 2458 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2459 | |
2460 | p = pp; | |
2461 | pp = unpack_varlen_hex (p + 1, &tid); | |
2462 | if (obuf) | |
2463 | *obuf = pp; | |
ba348170 | 2464 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2465 | } |
2466 | ||
2467 | /* No multi-process. Just a tid. */ | |
2468 | pp = unpack_varlen_hex (p, &tid); | |
2469 | ||
c9f35b34 KB |
2470 | /* Return null_ptid when no thread id is found. */ |
2471 | if (p == pp) | |
2472 | { | |
2473 | if (obuf) | |
2474 | *obuf = pp; | |
2475 | return null_ptid; | |
2476 | } | |
2477 | ||
82f73884 | 2478 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2479 | what's in inferior_ptid, unless it's null at this point. If so, |
2480 | then since there's no way to know the pid of the reported | |
2481 | threads, use the magic number. */ | |
2482 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2483 | pid = ptid_get_pid (magic_null_ptid); | |
2484 | else | |
2485 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2486 | |
2487 | if (obuf) | |
2488 | *obuf = pp; | |
ba348170 | 2489 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2490 | } |
2491 | ||
c906108c | 2492 | static int |
fba45db2 | 2493 | stubhex (int ch) |
c906108c SS |
2494 | { |
2495 | if (ch >= 'a' && ch <= 'f') | |
2496 | return ch - 'a' + 10; | |
2497 | if (ch >= '0' && ch <= '9') | |
2498 | return ch - '0'; | |
2499 | if (ch >= 'A' && ch <= 'F') | |
2500 | return ch - 'A' + 10; | |
2501 | return -1; | |
2502 | } | |
2503 | ||
2504 | static int | |
fba45db2 | 2505 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2506 | { |
2507 | int nibble; | |
2508 | int retval = 0; | |
2509 | ||
2510 | while (fieldlength) | |
2511 | { | |
2512 | nibble = stubhex (*buff++); | |
2513 | retval |= nibble; | |
2514 | fieldlength--; | |
2515 | if (fieldlength) | |
2516 | retval = retval << 4; | |
2517 | } | |
2518 | return retval; | |
2519 | } | |
2520 | ||
c906108c | 2521 | static char * |
fba45db2 | 2522 | unpack_nibble (char *buf, int *val) |
c906108c | 2523 | { |
b7589f7d | 2524 | *val = fromhex (*buf++); |
c906108c SS |
2525 | return buf; |
2526 | } | |
2527 | ||
c906108c | 2528 | static char * |
fba45db2 | 2529 | unpack_byte (char *buf, int *value) |
c906108c SS |
2530 | { |
2531 | *value = stub_unpack_int (buf, 2); | |
2532 | return buf + 2; | |
2533 | } | |
2534 | ||
2535 | static char * | |
fba45db2 | 2536 | pack_int (char *buf, int value) |
c906108c SS |
2537 | { |
2538 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2539 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2540 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2541 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2542 | return buf; | |
2543 | } | |
2544 | ||
2545 | static char * | |
fba45db2 | 2546 | unpack_int (char *buf, int *value) |
c906108c SS |
2547 | { |
2548 | *value = stub_unpack_int (buf, 8); | |
2549 | return buf + 8; | |
2550 | } | |
2551 | ||
23860348 | 2552 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2553 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2554 | |
2555 | static char * | |
fba45db2 | 2556 | pack_string (char *pkt, char *string) |
c906108c SS |
2557 | { |
2558 | char ch; | |
2559 | int len; | |
2560 | ||
2561 | len = strlen (string); | |
2562 | if (len > 200) | |
23860348 | 2563 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2564 | pkt = pack_hex_byte (pkt, len); |
2565 | while (len-- > 0) | |
2566 | { | |
2567 | ch = *string++; | |
2568 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2569 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2570 | *pkt++ = ch; |
2571 | } | |
2572 | return pkt; | |
2573 | } | |
2574 | #endif /* 0 (unused) */ | |
2575 | ||
2576 | static char * | |
fba45db2 | 2577 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2578 | { |
2579 | while (length--) | |
2580 | *dest++ = *src++; | |
2581 | *dest = '\0'; | |
2582 | return src; | |
2583 | } | |
2584 | ||
2585 | static char * | |
fba45db2 | 2586 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2587 | { |
2588 | char *limit; | |
2589 | unsigned char *altid; | |
2590 | ||
2591 | altid = (unsigned char *) id; | |
2592 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2593 | while (pkt < limit) | |
2594 | pkt = pack_hex_byte (pkt, *altid++); | |
2595 | return pkt; | |
2596 | } | |
2597 | ||
2598 | ||
2599 | static char * | |
fba45db2 | 2600 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2601 | { |
2602 | char *altref; | |
2603 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2604 | int x, y; | |
2605 | ||
2606 | altref = (char *) id; | |
2607 | ||
2608 | while (inbuf < limit) | |
2609 | { | |
2610 | x = stubhex (*inbuf++); | |
2611 | y = stubhex (*inbuf++); | |
2612 | *altref++ = (x << 4) | y; | |
2613 | } | |
2614 | return inbuf; | |
2615 | } | |
2616 | ||
2617 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2618 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2619 | to use 64bit thread references internally. This is an adapter |
2620 | function. */ | |
2621 | ||
2622 | void | |
fba45db2 | 2623 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2624 | { |
2625 | unsigned char *scan; | |
2626 | ||
2627 | scan = (unsigned char *) id; | |
2628 | { | |
2629 | int i = 4; | |
2630 | while (i--) | |
2631 | *scan++ = 0; | |
2632 | } | |
2633 | *scan++ = (value >> 24) & 0xff; | |
2634 | *scan++ = (value >> 16) & 0xff; | |
2635 | *scan++ = (value >> 8) & 0xff; | |
2636 | *scan++ = (value & 0xff); | |
2637 | } | |
2638 | ||
2639 | static int | |
fba45db2 | 2640 | threadref_to_int (threadref *ref) |
c906108c SS |
2641 | { |
2642 | int i, value = 0; | |
2643 | unsigned char *scan; | |
2644 | ||
cfd77fa1 | 2645 | scan = *ref; |
c906108c SS |
2646 | scan += 4; |
2647 | i = 4; | |
2648 | while (i-- > 0) | |
2649 | value = (value << 8) | ((*scan++) & 0xff); | |
2650 | return value; | |
2651 | } | |
2652 | ||
2653 | static void | |
fba45db2 | 2654 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2655 | { |
2656 | int i; | |
2657 | unsigned char *csrc, *cdest; | |
2658 | ||
2659 | csrc = (unsigned char *) src; | |
2660 | cdest = (unsigned char *) dest; | |
2661 | i = 8; | |
2662 | while (i--) | |
2663 | *cdest++ = *csrc++; | |
2664 | } | |
2665 | ||
2666 | static int | |
fba45db2 | 2667 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2668 | { |
23860348 | 2669 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2670 | #if 0 |
2671 | unsigned char *srcp, *destp; | |
2672 | int i, result; | |
2673 | srcp = (char *) src; | |
2674 | destp = (char *) dest; | |
2675 | ||
2676 | result = 1; | |
2677 | while (i-- > 0) | |
2678 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2679 | return result; | |
2680 | #endif | |
2681 | return 1; | |
2682 | } | |
2683 | ||
2684 | /* | |
c5aa993b JM |
2685 | threadid:1, # always request threadid |
2686 | context_exists:2, | |
2687 | display:4, | |
2688 | unique_name:8, | |
2689 | more_display:16 | |
2690 | */ | |
c906108c SS |
2691 | |
2692 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2693 | ||
2694 | static char * | |
fba45db2 | 2695 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2696 | { |
23860348 MS |
2697 | *pkt++ = 'q'; /* Info Query */ |
2698 | *pkt++ = 'P'; /* process or thread info */ | |
2699 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2700 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2701 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2702 | return pkt; |
2703 | } | |
2704 | ||
23860348 | 2705 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2706 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2707 | add more fields as time goes by. */ |
c906108c | 2708 | |
23860348 | 2709 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2710 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2711 | fetch registers and its stack? */ |
c5aa993b | 2712 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2713 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2714 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2715 | the process. */ |
c906108c SS |
2716 | |
2717 | static int | |
fba45db2 KB |
2718 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2719 | struct gdb_ext_thread_info *info) | |
c906108c | 2720 | { |
d01949b6 | 2721 | struct remote_state *rs = get_remote_state (); |
c906108c | 2722 | int mask, length; |
cfd77fa1 | 2723 | int tag; |
c906108c | 2724 | threadref ref; |
6d820c5c | 2725 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2726 | int retval = 1; |
2727 | ||
23860348 | 2728 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2729 | info->active = 0; |
2730 | info->display[0] = '\0'; | |
2731 | info->shortname[0] = '\0'; | |
2732 | info->more_display[0] = '\0'; | |
2733 | ||
23860348 MS |
2734 | /* Assume the characters indicating the packet type have been |
2735 | stripped. */ | |
c906108c SS |
2736 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2737 | pkt = unpack_threadid (pkt, &ref); | |
2738 | ||
2739 | if (mask == 0) | |
8a3fe4f8 | 2740 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2741 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2742 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2743 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2744 | return 0; |
2745 | } | |
2746 | copy_threadref (&info->threadid, &ref); | |
2747 | ||
23860348 | 2748 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2749 | |
23860348 MS |
2750 | /* Packets are terminated with nulls. */ |
2751 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2752 | { |
2753 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2754 | pkt = unpack_byte (pkt, &length); /* length */ |
2755 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2756 | { |
8a3fe4f8 | 2757 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2758 | retval = 0; |
2759 | break; | |
2760 | } | |
2761 | if (tag == TAG_THREADID) | |
2762 | { | |
2763 | if (length != 16) | |
2764 | { | |
8a3fe4f8 | 2765 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2766 | retval = 0; |
2767 | break; | |
2768 | } | |
2769 | pkt = unpack_threadid (pkt, &ref); | |
2770 | mask = mask & ~TAG_THREADID; | |
2771 | continue; | |
2772 | } | |
2773 | if (tag == TAG_EXISTS) | |
2774 | { | |
2775 | info->active = stub_unpack_int (pkt, length); | |
2776 | pkt += length; | |
2777 | mask = mask & ~(TAG_EXISTS); | |
2778 | if (length > 8) | |
2779 | { | |
8a3fe4f8 | 2780 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2781 | retval = 0; |
2782 | break; | |
2783 | } | |
2784 | continue; | |
2785 | } | |
2786 | if (tag == TAG_THREADNAME) | |
2787 | { | |
2788 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2789 | mask = mask & ~TAG_THREADNAME; | |
2790 | continue; | |
2791 | } | |
2792 | if (tag == TAG_DISPLAY) | |
2793 | { | |
2794 | pkt = unpack_string (pkt, &info->display[0], length); | |
2795 | mask = mask & ~TAG_DISPLAY; | |
2796 | continue; | |
2797 | } | |
2798 | if (tag == TAG_MOREDISPLAY) | |
2799 | { | |
2800 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2801 | mask = mask & ~TAG_MOREDISPLAY; | |
2802 | continue; | |
2803 | } | |
8a3fe4f8 | 2804 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2805 | break; /* Not a tag we know about. */ |
c906108c SS |
2806 | } |
2807 | return retval; | |
2808 | } | |
2809 | ||
2810 | static int | |
fba45db2 KB |
2811 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2812 | struct gdb_ext_thread_info *info) | |
c906108c | 2813 | { |
d01949b6 | 2814 | struct remote_state *rs = get_remote_state (); |
c906108c | 2815 | int result; |
c906108c | 2816 | |
2e9f7625 DJ |
2817 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2818 | putpkt (rs->buf); | |
6d820c5c | 2819 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2820 | |
2821 | if (rs->buf[0] == '\0') | |
2822 | return 0; | |
2823 | ||
2e9f7625 | 2824 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2825 | threadid, info); |
c906108c SS |
2826 | return result; |
2827 | } | |
2828 | ||
c906108c SS |
2829 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2830 | ||
2831 | static char * | |
fba45db2 KB |
2832 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2833 | threadref *nextthread) | |
c906108c SS |
2834 | { |
2835 | *pkt++ = 'q'; /* info query packet */ | |
2836 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2837 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2838 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2839 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2840 | *pkt = '\0'; | |
2841 | return pkt; | |
2842 | } | |
2843 | ||
2844 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2845 | ||
2846 | static int | |
fba45db2 KB |
2847 | parse_threadlist_response (char *pkt, int result_limit, |
2848 | threadref *original_echo, threadref *resultlist, | |
2849 | int *doneflag) | |
c906108c | 2850 | { |
d01949b6 | 2851 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2852 | char *limit; |
2853 | int count, resultcount, done; | |
2854 | ||
2855 | resultcount = 0; | |
2856 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2857 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2858 | /* done parse past here */ |
c906108c SS |
2859 | pkt = unpack_byte (pkt, &count); /* count field */ |
2860 | pkt = unpack_nibble (pkt, &done); | |
2861 | /* The first threadid is the argument threadid. */ | |
2862 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2863 | while ((count-- > 0) && (pkt < limit)) | |
2864 | { | |
2865 | pkt = unpack_threadid (pkt, resultlist++); | |
2866 | if (resultcount++ >= result_limit) | |
2867 | break; | |
2868 | } | |
2869 | if (doneflag) | |
2870 | *doneflag = done; | |
2871 | return resultcount; | |
2872 | } | |
2873 | ||
6dc54d91 PA |
2874 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2875 | qL packet is not supported, 0 on error and 1 on success. */ | |
2876 | ||
c906108c | 2877 | static int |
fba45db2 KB |
2878 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2879 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2880 | { |
d01949b6 | 2881 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2882 | int result = 1; |
2883 | ||
23860348 | 2884 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2885 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2886 | >= get_remote_packet_size ()) | |
ea9c271d | 2887 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2888 | |
6d820c5c DJ |
2889 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2890 | putpkt (rs->buf); | |
2891 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2892 | if (*rs->buf == '\0') |
6dc54d91 PA |
2893 | { |
2894 | /* Packet not supported. */ | |
2895 | return -1; | |
2896 | } | |
2897 | ||
2898 | *result_count = | |
2899 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2900 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2901 | |
0d031856 | 2902 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2903 | { |
23860348 MS |
2904 | /* FIXME: This is a good reason to drop the packet. */ |
2905 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2906 | /* Possabilities : |
2907 | retransmit immediatly - race conditions | |
2908 | retransmit after timeout - yes | |
2909 | exit | |
2910 | wait for packet, then exit | |
2911 | */ | |
8a3fe4f8 | 2912 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2913 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2914 | } |
2915 | if (*result_count <= 0) | |
2916 | { | |
2917 | if (*done != 1) | |
2918 | { | |
8a3fe4f8 | 2919 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2920 | result = 0; |
2921 | } | |
2922 | return result; /* break; */ | |
2923 | } | |
2924 | if (*result_count > result_limit) | |
2925 | { | |
2926 | *result_count = 0; | |
8a3fe4f8 | 2927 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2928 | return 0; |
2929 | } | |
2930 | return result; | |
2931 | } | |
2932 | ||
6dc54d91 PA |
2933 | /* Fetch the list of remote threads, with the qL packet, and call |
2934 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2935 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2936 | STEPFUNCTION returns false. If the packet is not supported, | |
2937 | returns -1. */ | |
c906108c | 2938 | |
c906108c | 2939 | static int |
fba45db2 KB |
2940 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2941 | int looplimit) | |
c906108c | 2942 | { |
0d031856 | 2943 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2944 | int done, i, result_count; |
2945 | int startflag = 1; | |
2946 | int result = 1; | |
2947 | int loopcount = 0; | |
c906108c SS |
2948 | |
2949 | done = 0; | |
2950 | while (!done) | |
2951 | { | |
2952 | if (loopcount++ > looplimit) | |
2953 | { | |
2954 | result = 0; | |
8a3fe4f8 | 2955 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2956 | break; |
2957 | } | |
6dc54d91 PA |
2958 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2959 | MAXTHREADLISTRESULTS, | |
2960 | &done, &result_count, | |
2961 | rs->resultthreadlist); | |
2962 | if (result <= 0) | |
2963 | break; | |
23860348 | 2964 | /* Clear for later iterations. */ |
c906108c SS |
2965 | startflag = 0; |
2966 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2967 | if (result_count >= 1) | |
0d031856 TT |
2968 | copy_threadref (&rs->nextthread, |
2969 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2970 | i = 0; |
2971 | while (result_count--) | |
6dc54d91 PA |
2972 | { |
2973 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2974 | { | |
2975 | result = 0; | |
2976 | break; | |
2977 | } | |
2978 | } | |
c906108c SS |
2979 | } |
2980 | return result; | |
2981 | } | |
2982 | ||
6dc54d91 PA |
2983 | /* A thread found on the remote target. */ |
2984 | ||
2985 | typedef struct thread_item | |
2986 | { | |
2987 | /* The thread's PTID. */ | |
2988 | ptid_t ptid; | |
2989 | ||
2990 | /* The thread's extra info. May be NULL. */ | |
2991 | char *extra; | |
2992 | ||
79efa585 SM |
2993 | /* The thread's name. May be NULL. */ |
2994 | char *name; | |
2995 | ||
6dc54d91 PA |
2996 | /* The core the thread was running on. -1 if not known. */ |
2997 | int core; | |
2998 | } thread_item_t; | |
2999 | DEF_VEC_O(thread_item_t); | |
3000 | ||
3001 | /* Context passed around to the various methods listing remote | |
3002 | threads. As new threads are found, they're added to the ITEMS | |
3003 | vector. */ | |
3004 | ||
3005 | struct threads_listing_context | |
3006 | { | |
3007 | /* The threads found on the remote target. */ | |
3008 | VEC (thread_item_t) *items; | |
3009 | }; | |
3010 | ||
80134cf5 PA |
3011 | /* Discard the contents of the constructed thread listing context. */ |
3012 | ||
3013 | static void | |
3014 | clear_threads_listing_context (void *p) | |
3015 | { | |
19ba03f4 SM |
3016 | struct threads_listing_context *context |
3017 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
3018 | int i; |
3019 | struct thread_item *item; | |
3020 | ||
3021 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
79efa585 SM |
3022 | { |
3023 | xfree (item->extra); | |
3024 | xfree (item->name); | |
3025 | } | |
80134cf5 PA |
3026 | |
3027 | VEC_free (thread_item_t, context->items); | |
3028 | } | |
3029 | ||
cbb8991c DB |
3030 | /* Remove the thread specified as the related_pid field of WS |
3031 | from the CONTEXT list. */ | |
3032 | ||
3033 | static void | |
3034 | threads_listing_context_remove (struct target_waitstatus *ws, | |
3035 | struct threads_listing_context *context) | |
3036 | { | |
3037 | struct thread_item *item; | |
3038 | int i; | |
3039 | ptid_t child_ptid = ws->value.related_pid; | |
3040 | ||
3041 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
3042 | { | |
3043 | if (ptid_equal (item->ptid, child_ptid)) | |
3044 | { | |
3045 | VEC_ordered_remove (thread_item_t, context->items, i); | |
3046 | break; | |
3047 | } | |
3048 | } | |
3049 | } | |
3050 | ||
c906108c | 3051 | static int |
6dc54d91 | 3052 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3053 | { |
19ba03f4 SM |
3054 | struct threads_listing_context *context |
3055 | = (struct threads_listing_context *) data; | |
6dc54d91 | 3056 | struct thread_item item; |
79d7f229 | 3057 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 3058 | |
6dc54d91 PA |
3059 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
3060 | item.core = -1; | |
2e3b657e | 3061 | item.name = NULL; |
6dc54d91 PA |
3062 | item.extra = NULL; |
3063 | ||
3064 | VEC_safe_push (thread_item_t, context->items, &item); | |
3065 | ||
c906108c SS |
3066 | return 1; /* continue iterator */ |
3067 | } | |
3068 | ||
3069 | #define CRAZY_MAX_THREADS 1000 | |
3070 | ||
39f77062 KB |
3071 | static ptid_t |
3072 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3073 | { |
d01949b6 | 3074 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3075 | |
3076 | putpkt ("qC"); | |
6d820c5c | 3077 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3078 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
3079 | { |
3080 | char *obuf; | |
3081 | ptid_t result; | |
3082 | ||
3083 | result = read_ptid (&rs->buf[2], &obuf); | |
3084 | if (*obuf != '\0' && remote_debug) | |
3085 | fprintf_unfiltered (gdb_stdlog, | |
3086 | "warning: garbage in qC reply\n"); | |
3087 | ||
3088 | return result; | |
3089 | } | |
c906108c SS |
3090 | else |
3091 | return oldpid; | |
3092 | } | |
3093 | ||
6dc54d91 | 3094 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3095 | |
6dc54d91 PA |
3096 | static int |
3097 | remote_get_threads_with_ql (struct target_ops *ops, | |
3098 | struct threads_listing_context *context) | |
c906108c | 3099 | { |
6dc54d91 PA |
3100 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3101 | CRAZY_MAX_THREADS) >= 0) | |
3102 | return 1; | |
3103 | ||
3104 | return 0; | |
c906108c SS |
3105 | } |
3106 | ||
dc146f7c VP |
3107 | #if defined(HAVE_LIBEXPAT) |
3108 | ||
dc146f7c VP |
3109 | static void |
3110 | start_thread (struct gdb_xml_parser *parser, | |
3111 | const struct gdb_xml_element *element, | |
3112 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
3113 | { | |
19ba03f4 SM |
3114 | struct threads_listing_context *data |
3115 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3116 | |
3117 | struct thread_item item; | |
3118 | char *id; | |
3d2c1d41 | 3119 | struct gdb_xml_value *attr; |
dc146f7c | 3120 | |
19ba03f4 | 3121 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
3122 | item.ptid = read_ptid (id, NULL); |
3123 | ||
3d2c1d41 PA |
3124 | attr = xml_find_attribute (attributes, "core"); |
3125 | if (attr != NULL) | |
3126 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
3127 | else |
3128 | item.core = -1; | |
3129 | ||
79efa585 | 3130 | attr = xml_find_attribute (attributes, "name"); |
e1961661 | 3131 | item.name = attr != NULL ? xstrdup ((const char *) attr->value) : NULL; |
79efa585 | 3132 | |
dc146f7c VP |
3133 | item.extra = 0; |
3134 | ||
3135 | VEC_safe_push (thread_item_t, data->items, &item); | |
3136 | } | |
3137 | ||
3138 | static void | |
3139 | end_thread (struct gdb_xml_parser *parser, | |
3140 | const struct gdb_xml_element *element, | |
3141 | void *user_data, const char *body_text) | |
3142 | { | |
19ba03f4 SM |
3143 | struct threads_listing_context *data |
3144 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3145 | |
3146 | if (body_text && *body_text) | |
2ae2a0b7 | 3147 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
3148 | } |
3149 | ||
3150 | const struct gdb_xml_attribute thread_attributes[] = { | |
3151 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3152 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3153 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3154 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3155 | }; | |
3156 | ||
3157 | const struct gdb_xml_element thread_children[] = { | |
3158 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3159 | }; | |
3160 | ||
3161 | const struct gdb_xml_element threads_children[] = { | |
3162 | { "thread", thread_attributes, thread_children, | |
3163 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3164 | start_thread, end_thread }, | |
3165 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3166 | }; | |
3167 | ||
3168 | const struct gdb_xml_element threads_elements[] = { | |
3169 | { "threads", NULL, threads_children, | |
3170 | GDB_XML_EF_NONE, NULL, NULL }, | |
3171 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3172 | }; | |
3173 | ||
3174 | #endif | |
3175 | ||
6dc54d91 | 3176 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3177 | |
6dc54d91 PA |
3178 | static int |
3179 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3180 | struct threads_listing_context *context) | |
0f71a2f6 | 3181 | { |
dc146f7c | 3182 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3183 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3184 | { |
6dc54d91 | 3185 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 3186 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 3187 | |
6dc54d91 | 3188 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3189 | { |
6dc54d91 PA |
3190 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
3191 | threads_elements, xml, context); | |
dc146f7c VP |
3192 | } |
3193 | ||
3194 | do_cleanups (back_to); | |
6dc54d91 | 3195 | return 1; |
dc146f7c VP |
3196 | } |
3197 | #endif | |
3198 | ||
6dc54d91 PA |
3199 | return 0; |
3200 | } | |
3201 | ||
3202 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3203 | ||
3204 | static int | |
3205 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3206 | struct threads_listing_context *context) | |
3207 | { | |
3208 | struct remote_state *rs = get_remote_state (); | |
3209 | ||
b80fafe3 | 3210 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3211 | { |
6dc54d91 PA |
3212 | char *bufp; |
3213 | ||
9d1f7ab2 | 3214 | putpkt ("qfThreadInfo"); |
6d820c5c | 3215 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3216 | bufp = rs->buf; |
9d1f7ab2 | 3217 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3218 | { |
9d1f7ab2 MS |
3219 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3220 | { | |
3221 | do | |
3222 | { | |
6dc54d91 PA |
3223 | struct thread_item item; |
3224 | ||
3225 | item.ptid = read_ptid (bufp, &bufp); | |
3226 | item.core = -1; | |
2e3b657e | 3227 | item.name = NULL; |
6dc54d91 PA |
3228 | item.extra = NULL; |
3229 | ||
3230 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3231 | } |
3232 | while (*bufp++ == ','); /* comma-separated list */ | |
3233 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3234 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3235 | bufp = rs->buf; |
9d1f7ab2 | 3236 | } |
6dc54d91 PA |
3237 | return 1; |
3238 | } | |
3239 | else | |
3240 | { | |
3241 | /* Packet not recognized. */ | |
3242 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3243 | } |
3244 | } | |
3245 | ||
6dc54d91 PA |
3246 | return 0; |
3247 | } | |
3248 | ||
e8032dde | 3249 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3250 | targets. */ |
3251 | ||
3252 | static void | |
e8032dde | 3253 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 | 3254 | { |
6dc54d91 PA |
3255 | struct threads_listing_context context; |
3256 | struct cleanup *old_chain; | |
ab970af1 | 3257 | int got_list = 0; |
e8032dde | 3258 | |
6dc54d91 PA |
3259 | context.items = NULL; |
3260 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3261 | ||
3262 | /* We have a few different mechanisms to fetch the thread list. Try | |
3263 | them all, starting with the most preferred one first, falling | |
3264 | back to older methods. */ | |
3265 | if (remote_get_threads_with_qxfer (ops, &context) | |
3266 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3267 | || remote_get_threads_with_ql (ops, &context)) | |
3268 | { | |
3269 | int i; | |
3270 | struct thread_item *item; | |
ab970af1 PA |
3271 | struct thread_info *tp, *tmp; |
3272 | ||
3273 | got_list = 1; | |
3274 | ||
7d1a114c PA |
3275 | if (VEC_empty (thread_item_t, context.items) |
3276 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3277 | { | |
3278 | /* Some targets don't really support threads, but still | |
3279 | reply an (empty) thread list in response to the thread | |
3280 | listing packets, instead of replying "packet not | |
3281 | supported". Exit early so we don't delete the main | |
3282 | thread. */ | |
3283 | do_cleanups (old_chain); | |
3284 | return; | |
3285 | } | |
3286 | ||
ab970af1 PA |
3287 | /* CONTEXT now holds the current thread list on the remote |
3288 | target end. Delete GDB-side threads no longer found on the | |
3289 | target. */ | |
8a06aea7 | 3290 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3291 | { |
ab970af1 PA |
3292 | for (i = 0; |
3293 | VEC_iterate (thread_item_t, context.items, i, item); | |
3294 | ++i) | |
3295 | { | |
3296 | if (ptid_equal (item->ptid, tp->ptid)) | |
3297 | break; | |
3298 | } | |
3299 | ||
3300 | if (i == VEC_length (thread_item_t, context.items)) | |
3301 | { | |
3302 | /* Not found. */ | |
3303 | delete_thread (tp->ptid); | |
3304 | } | |
cbb8991c DB |
3305 | } |
3306 | ||
3307 | /* Remove any unreported fork child threads from CONTEXT so | |
3308 | that we don't interfere with follow fork, which is where | |
3309 | creation of such threads is handled. */ | |
3310 | remove_new_fork_children (&context); | |
74531fed | 3311 | |
ab970af1 | 3312 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3313 | for (i = 0; |
3314 | VEC_iterate (thread_item_t, context.items, i, item); | |
3315 | ++i) | |
3316 | { | |
3317 | if (!ptid_equal (item->ptid, null_ptid)) | |
3318 | { | |
3319 | struct private_thread_info *info; | |
3320 | /* In non-stop mode, we assume new found threads are | |
0d5b594f PA |
3321 | executing until proven otherwise with a stop reply. |
3322 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3323 | stopped. */ |
0d5b594f | 3324 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3325 | |
0d5b594f | 3326 | remote_notice_new_inferior (item->ptid, executing); |
6dc54d91 | 3327 | |
85ad3aaf | 3328 | info = get_private_info_ptid (item->ptid); |
6dc54d91 PA |
3329 | info->core = item->core; |
3330 | info->extra = item->extra; | |
3331 | item->extra = NULL; | |
79efa585 SM |
3332 | info->name = item->name; |
3333 | item->name = NULL; | |
6dc54d91 PA |
3334 | } |
3335 | } | |
3336 | } | |
3337 | ||
ab970af1 PA |
3338 | if (!got_list) |
3339 | { | |
3340 | /* If no thread listing method is supported, then query whether | |
3341 | each known thread is alive, one by one, with the T packet. | |
3342 | If the target doesn't support threads at all, then this is a | |
3343 | no-op. See remote_thread_alive. */ | |
3344 | prune_threads (); | |
3345 | } | |
3346 | ||
6dc54d91 | 3347 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3348 | } |
3349 | ||
802188a7 | 3350 | /* |
9d1f7ab2 MS |
3351 | * Collect a descriptive string about the given thread. |
3352 | * The target may say anything it wants to about the thread | |
3353 | * (typically info about its blocked / runnable state, name, etc.). | |
3354 | * This string will appear in the info threads display. | |
802188a7 | 3355 | * |
9d1f7ab2 MS |
3356 | * Optional: targets are not required to implement this function. |
3357 | */ | |
3358 | ||
7a114964 | 3359 | static const char * |
c15906d8 | 3360 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3361 | { |
d01949b6 | 3362 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3363 | int result; |
3364 | int set; | |
3365 | threadref id; | |
3366 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3367 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3368 | int n = 0; /* position in display_buf */ |
3369 | ||
5d93a237 | 3370 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3371 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3372 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3373 | |
60e569b9 | 3374 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3375 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3376 | /* This is the main thread which was added by GDB. The remote |
3377 | server doesn't know about it. */ | |
3378 | return NULL; | |
3379 | ||
4082afcc | 3380 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3381 | { |
3382 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3383 | |
fe978cb0 PA |
3384 | if (info && info->priv) |
3385 | return info->priv->extra; | |
dc146f7c VP |
3386 | else |
3387 | return NULL; | |
3388 | } | |
3389 | ||
b80fafe3 | 3390 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3391 | { |
82f73884 PA |
3392 | char *b = rs->buf; |
3393 | char *endb = rs->buf + get_remote_packet_size (); | |
3394 | ||
3395 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3396 | b += strlen (b); | |
3397 | write_ptid (b, endb, tp->ptid); | |
3398 | ||
2e9f7625 | 3399 | putpkt (rs->buf); |
6d820c5c | 3400 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3401 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3402 | { |
325fac50 | 3403 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3404 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3405 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3406 | return display_buf; |
3407 | } | |
0f71a2f6 | 3408 | } |
9d1f7ab2 MS |
3409 | |
3410 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3411 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3412 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3413 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3414 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3415 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3416 | if (threadinfo.active) | |
0f71a2f6 | 3417 | { |
9d1f7ab2 | 3418 | if (*threadinfo.shortname) |
2bc416ba | 3419 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3420 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3421 | if (*threadinfo.display) |
2bc416ba | 3422 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3423 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3424 | if (*threadinfo.more_display) |
2bc416ba | 3425 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3426 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3427 | |
3428 | if (n > 0) | |
c5aa993b | 3429 | { |
23860348 | 3430 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3431 | if (',' == display_buf[n-1]) |
3432 | display_buf[n-1] = ' '; | |
3433 | return display_buf; | |
c5aa993b | 3434 | } |
0f71a2f6 | 3435 | } |
9d1f7ab2 | 3436 | return NULL; |
0f71a2f6 | 3437 | } |
c906108c | 3438 | \f |
c5aa993b | 3439 | |
0fb4aa4b | 3440 | static int |
61fc905d | 3441 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3442 | struct static_tracepoint_marker *marker) |
3443 | { | |
3444 | struct remote_state *rs = get_remote_state (); | |
3445 | char *p = rs->buf; | |
3446 | ||
bba74b36 | 3447 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3448 | p += strlen (p); |
3449 | p += hexnumstr (p, addr); | |
3450 | putpkt (rs->buf); | |
3451 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3452 | p = rs->buf; | |
3453 | ||
3454 | if (*p == 'E') | |
3455 | error (_("Remote failure reply: %s"), p); | |
3456 | ||
3457 | if (*p++ == 'm') | |
3458 | { | |
3459 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3460 | return 1; | |
3461 | } | |
3462 | ||
3463 | return 0; | |
3464 | } | |
3465 | ||
0fb4aa4b | 3466 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3467 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3468 | const char *strid) | |
0fb4aa4b PA |
3469 | { |
3470 | struct remote_state *rs = get_remote_state (); | |
3471 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3472 | struct static_tracepoint_marker *marker = NULL; | |
3473 | struct cleanup *old_chain; | |
3474 | char *p; | |
3475 | ||
3476 | /* Ask for a first packet of static tracepoint marker | |
3477 | definition. */ | |
3478 | putpkt ("qTfSTM"); | |
3479 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3480 | p = rs->buf; | |
3481 | if (*p == 'E') | |
3482 | error (_("Remote failure reply: %s"), p); | |
3483 | ||
3484 | old_chain = make_cleanup (free_current_marker, &marker); | |
3485 | ||
3486 | while (*p++ == 'm') | |
3487 | { | |
3488 | if (marker == NULL) | |
3489 | marker = XCNEW (struct static_tracepoint_marker); | |
3490 | ||
3491 | do | |
3492 | { | |
3493 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3494 | ||
3495 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3496 | { | |
3497 | VEC_safe_push (static_tracepoint_marker_p, | |
3498 | markers, marker); | |
3499 | marker = NULL; | |
3500 | } | |
3501 | else | |
3502 | { | |
3503 | release_static_tracepoint_marker (marker); | |
3504 | memset (marker, 0, sizeof (*marker)); | |
3505 | } | |
3506 | } | |
3507 | while (*p++ == ','); /* comma-separated list */ | |
3508 | /* Ask for another packet of static tracepoint definition. */ | |
3509 | putpkt ("qTsSTM"); | |
3510 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3511 | p = rs->buf; | |
3512 | } | |
3513 | ||
3514 | do_cleanups (old_chain); | |
3515 | return markers; | |
3516 | } | |
3517 | ||
3518 | \f | |
10760264 JB |
3519 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3520 | ||
3521 | static ptid_t | |
1e6b91a4 | 3522 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3523 | { |
ba348170 | 3524 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3525 | } |
3526 | \f | |
3527 | ||
24b06219 | 3528 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3529 | |
3530 | static void | |
fba45db2 | 3531 | extended_remote_restart (void) |
c906108c | 3532 | { |
d01949b6 | 3533 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3534 | |
3535 | /* Send the restart command; for reasons I don't understand the | |
3536 | remote side really expects a number after the "R". */ | |
ea9c271d | 3537 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3538 | putpkt (rs->buf); |
c906108c | 3539 | |
ad9a8f3f | 3540 | remote_fileio_reset (); |
c906108c SS |
3541 | } |
3542 | \f | |
3543 | /* Clean up connection to a remote debugger. */ | |
3544 | ||
c906108c | 3545 | static void |
de90e03d | 3546 | remote_close (struct target_ops *self) |
c906108c | 3547 | { |
5d93a237 TT |
3548 | struct remote_state *rs = get_remote_state (); |
3549 | ||
3550 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3551 | return; /* already closed */ |
3552 | ||
048094ac | 3553 | /* Make sure we leave stdin registered in the event loop. */ |
e3594fd1 | 3554 | remote_terminal_ours (self); |
ce5ce7ed | 3555 | |
5d93a237 TT |
3556 | serial_close (rs->remote_desc); |
3557 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3558 | |
3559 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3560 | of all the inferiors and their threads we were controlling. |
3561 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3562 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3563 | inferior_ptid = null_ptid; |
f67fd822 | 3564 | discard_all_inferiors (); |
ce5ce7ed | 3565 | |
f48ff2a7 YQ |
3566 | /* We are closing the remote target, so we should discard |
3567 | everything of this target. */ | |
bcc75809 | 3568 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3569 | |
3570 | if (remote_async_inferior_event_token) | |
3571 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3572 | |
5965e028 | 3573 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3574 | |
3575 | trace_reset_local_state (); | |
c906108c SS |
3576 | } |
3577 | ||
23860348 | 3578 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3579 | |
3580 | static void | |
fba45db2 | 3581 | get_offsets (void) |
c906108c | 3582 | { |
d01949b6 | 3583 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3584 | char *buf; |
085dd6e6 | 3585 | char *ptr; |
31d99776 DJ |
3586 | int lose, num_segments = 0, do_sections, do_segments; |
3587 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3588 | struct section_offsets *offs; |
31d99776 DJ |
3589 | struct symfile_segment_data *data; |
3590 | ||
3591 | if (symfile_objfile == NULL) | |
3592 | return; | |
c906108c SS |
3593 | |
3594 | putpkt ("qOffsets"); | |
6d820c5c | 3595 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3596 | buf = rs->buf; |
c906108c SS |
3597 | |
3598 | if (buf[0] == '\000') | |
3599 | return; /* Return silently. Stub doesn't support | |
23860348 | 3600 | this command. */ |
c906108c SS |
3601 | if (buf[0] == 'E') |
3602 | { | |
8a3fe4f8 | 3603 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3604 | return; |
3605 | } | |
3606 | ||
3607 | /* Pick up each field in turn. This used to be done with scanf, but | |
3608 | scanf will make trouble if CORE_ADDR size doesn't match | |
3609 | conversion directives correctly. The following code will work | |
3610 | with any size of CORE_ADDR. */ | |
3611 | text_addr = data_addr = bss_addr = 0; | |
3612 | ptr = buf; | |
3613 | lose = 0; | |
3614 | ||
61012eef | 3615 | if (startswith (ptr, "Text=")) |
c906108c SS |
3616 | { |
3617 | ptr += 5; | |
3618 | /* Don't use strtol, could lose on big values. */ | |
3619 | while (*ptr && *ptr != ';') | |
3620 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3621 | |
61012eef | 3622 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3623 | { |
3624 | ptr += 6; | |
3625 | while (*ptr && *ptr != ';') | |
3626 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3627 | } | |
3628 | else | |
3629 | lose = 1; | |
3630 | ||
61012eef | 3631 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3632 | { |
3633 | ptr += 5; | |
3634 | while (*ptr && *ptr != ';') | |
3635 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3636 | |
31d99776 DJ |
3637 | if (bss_addr != data_addr) |
3638 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3639 | } | |
3640 | else | |
3641 | lose = 1; | |
3642 | } | |
61012eef | 3643 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3644 | { |
31d99776 DJ |
3645 | ptr += 8; |
3646 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3647 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3648 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3649 | num_segments = 1; | |
3650 | ||
61012eef | 3651 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3652 | { |
3653 | ptr += 9; | |
3654 | while (*ptr && *ptr != ';') | |
3655 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3656 | num_segments++; | |
3657 | } | |
c906108c SS |
3658 | } |
3659 | else | |
3660 | lose = 1; | |
3661 | ||
3662 | if (lose) | |
8a3fe4f8 | 3663 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3664 | else if (*ptr != '\0') |
3665 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3666 | |
802188a7 | 3667 | offs = ((struct section_offsets *) |
a39a16c4 | 3668 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3669 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3670 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3671 | |
31d99776 DJ |
3672 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3673 | do_segments = (data != NULL); | |
3674 | do_sections = num_segments == 0; | |
c906108c | 3675 | |
28c32713 | 3676 | if (num_segments > 0) |
31d99776 | 3677 | { |
31d99776 DJ |
3678 | segments[0] = text_addr; |
3679 | segments[1] = data_addr; | |
3680 | } | |
28c32713 JB |
3681 | /* If we have two segments, we can still try to relocate everything |
3682 | by assuming that the .text and .data offsets apply to the whole | |
3683 | text and data segments. Convert the offsets given in the packet | |
3684 | to base addresses for symfile_map_offsets_to_segments. */ | |
3685 | else if (data && data->num_segments == 2) | |
3686 | { | |
3687 | segments[0] = data->segment_bases[0] + text_addr; | |
3688 | segments[1] = data->segment_bases[1] + data_addr; | |
3689 | num_segments = 2; | |
3690 | } | |
8d385431 DJ |
3691 | /* If the object file has only one segment, assume that it is text |
3692 | rather than data; main programs with no writable data are rare, | |
3693 | but programs with no code are useless. Of course the code might | |
3694 | have ended up in the data segment... to detect that we would need | |
3695 | the permissions here. */ | |
3696 | else if (data && data->num_segments == 1) | |
3697 | { | |
3698 | segments[0] = data->segment_bases[0] + text_addr; | |
3699 | num_segments = 1; | |
3700 | } | |
28c32713 JB |
3701 | /* There's no way to relocate by segment. */ |
3702 | else | |
3703 | do_segments = 0; | |
31d99776 DJ |
3704 | |
3705 | if (do_segments) | |
3706 | { | |
3707 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3708 | offs, num_segments, segments); | |
3709 | ||
3710 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3711 | error (_("Can not handle qOffsets TextSeg " |
3712 | "response with this symbol file")); | |
31d99776 DJ |
3713 | |
3714 | if (ret > 0) | |
3715 | do_sections = 0; | |
3716 | } | |
c906108c | 3717 | |
9ef895d6 DJ |
3718 | if (data) |
3719 | free_symfile_segment_data (data); | |
31d99776 DJ |
3720 | |
3721 | if (do_sections) | |
3722 | { | |
3723 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3724 | ||
3e43a32a MS |
3725 | /* This is a temporary kludge to force data and bss to use the |
3726 | same offsets because that's what nlmconv does now. The real | |
3727 | solution requires changes to the stub and remote.c that I | |
3728 | don't have time to do right now. */ | |
31d99776 DJ |
3729 | |
3730 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3731 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3732 | } | |
c906108c SS |
3733 | |
3734 | objfile_relocate (symfile_objfile, offs); | |
3735 | } | |
3736 | ||
9a7071a8 JB |
3737 | /* Send interrupt_sequence to remote target. */ |
3738 | static void | |
eeae04df | 3739 | send_interrupt_sequence (void) |
9a7071a8 | 3740 | { |
5d93a237 TT |
3741 | struct remote_state *rs = get_remote_state (); |
3742 | ||
9a7071a8 | 3743 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3744 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3745 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3746 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3747 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3748 | { | |
5d93a237 | 3749 | serial_send_break (rs->remote_desc); |
c33e31fd | 3750 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3751 | } |
3752 | else | |
3753 | internal_error (__FILE__, __LINE__, | |
3754 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3755 | interrupt_sequence_mode); | |
3756 | } | |
3757 | ||
3405876a PA |
3758 | |
3759 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3760 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3761 | ||
3762 | static ptid_t | |
3763 | stop_reply_extract_thread (char *stop_reply) | |
3764 | { | |
3765 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3766 | { | |
3767 | char *p; | |
3768 | ||
3769 | /* Txx r:val ; r:val (...) */ | |
3770 | p = &stop_reply[3]; | |
3771 | ||
3772 | /* Look for "register" named "thread". */ | |
3773 | while (*p != '\0') | |
3774 | { | |
3775 | char *p1; | |
3776 | ||
3777 | p1 = strchr (p, ':'); | |
3778 | if (p1 == NULL) | |
3779 | return null_ptid; | |
3780 | ||
3781 | if (strncmp (p, "thread", p1 - p) == 0) | |
3782 | return read_ptid (++p1, &p); | |
3783 | ||
3784 | p1 = strchr (p, ';'); | |
3785 | if (p1 == NULL) | |
3786 | return null_ptid; | |
3787 | p1++; | |
3788 | ||
3789 | p = p1; | |
3790 | } | |
3791 | } | |
3792 | ||
3793 | return null_ptid; | |
3794 | } | |
3795 | ||
b7ea362b PA |
3796 | /* Determine the remote side's current thread. If we have a stop |
3797 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3798 | "thread" register we can extract the current thread from. If not, | |
3799 | ask the remote which is the current thread with qC. The former | |
3800 | method avoids a roundtrip. */ | |
3801 | ||
3802 | static ptid_t | |
3803 | get_current_thread (char *wait_status) | |
3804 | { | |
6a49a997 | 3805 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3806 | |
3807 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3808 | the target architecture, which we haven't yet fully determined at | |
3809 | this point. */ | |
3810 | if (wait_status != NULL) | |
3811 | ptid = stop_reply_extract_thread (wait_status); | |
3812 | if (ptid_equal (ptid, null_ptid)) | |
3813 | ptid = remote_current_thread (inferior_ptid); | |
3814 | ||
3815 | return ptid; | |
3816 | } | |
3817 | ||
49c62f2e PA |
3818 | /* Query the remote target for which is the current thread/process, |
3819 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3820 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3821 | to return the current thread. |
3822 | ||
3823 | This function is called after handling the '?' or 'vRun' packets, | |
3824 | whose response is a stop reply from which we can also try | |
3825 | extracting the thread. If the target doesn't support the explicit | |
3826 | qC query, we infer the current thread from that stop reply, passed | |
3827 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3828 | |
3829 | static void | |
3405876a | 3830 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3831 | { |
3832 | struct remote_state *rs = get_remote_state (); | |
3833 | int fake_pid_p = 0; | |
6a49a997 | 3834 | ptid_t ptid; |
49c62f2e PA |
3835 | |
3836 | inferior_ptid = null_ptid; | |
3837 | ||
b7ea362b PA |
3838 | /* Now, if we have thread information, update inferior_ptid. */ |
3839 | ptid = get_current_thread (wait_status); | |
3405876a | 3840 | |
49c62f2e PA |
3841 | if (!ptid_equal (ptid, null_ptid)) |
3842 | { | |
3843 | if (!remote_multi_process_p (rs)) | |
3844 | fake_pid_p = 1; | |
3845 | ||
3846 | inferior_ptid = ptid; | |
3847 | } | |
3848 | else | |
3849 | { | |
3850 | /* Without this, some commands which require an active target | |
3851 | (such as kill) won't work. This variable serves (at least) | |
3852 | double duty as both the pid of the target process (if it has | |
3853 | such), and as a flag indicating that a target is active. */ | |
3854 | inferior_ptid = magic_null_ptid; | |
3855 | fake_pid_p = 1; | |
3856 | } | |
3857 | ||
1b6e6f5c | 3858 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3859 | |
3860 | /* Add the main thread. */ | |
3861 | add_thread_silent (inferior_ptid); | |
3862 | } | |
3863 | ||
6efcd9a8 PA |
3864 | /* Print info about a thread that was found already stopped on |
3865 | connection. */ | |
3866 | ||
3867 | static void | |
3868 | print_one_stopped_thread (struct thread_info *thread) | |
3869 | { | |
3870 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3871 | ||
3872 | switch_to_thread (thread->ptid); | |
3873 | stop_pc = get_frame_pc (get_current_frame ()); | |
3874 | set_current_sal_from_frame (get_current_frame ()); | |
3875 | ||
3876 | thread->suspend.waitstatus_pending_p = 0; | |
3877 | ||
3878 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3879 | { | |
3880 | enum gdb_signal sig = ws->value.sig; | |
3881 | ||
3882 | if (signal_print_state (sig)) | |
3883 | observer_notify_signal_received (sig); | |
3884 | } | |
3885 | observer_notify_normal_stop (NULL, 1); | |
3886 | } | |
3887 | ||
221e1a37 PA |
3888 | /* Process all initial stop replies the remote side sent in response |
3889 | to the ? packet. These indicate threads that were already stopped | |
3890 | on initial connection. We mark these threads as stopped and print | |
3891 | their current frame before giving the user the prompt. */ | |
3892 | ||
3893 | static void | |
6efcd9a8 | 3894 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3895 | { |
3896 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3897 | struct inferior *inf; |
3898 | struct thread_info *thread; | |
3899 | struct thread_info *selected = NULL; | |
3900 | struct thread_info *lowest_stopped = NULL; | |
3901 | struct thread_info *first = NULL; | |
221e1a37 PA |
3902 | |
3903 | /* Consume the initial pending events. */ | |
3904 | while (pending_stop_replies-- > 0) | |
3905 | { | |
3906 | ptid_t waiton_ptid = minus_one_ptid; | |
3907 | ptid_t event_ptid; | |
3908 | struct target_waitstatus ws; | |
3909 | int ignore_event = 0; | |
6efcd9a8 | 3910 | struct thread_info *thread; |
221e1a37 PA |
3911 | |
3912 | memset (&ws, 0, sizeof (ws)); | |
3913 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3914 | if (remote_debug) | |
3915 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3916 | ||
3917 | switch (ws.kind) | |
3918 | { | |
3919 | case TARGET_WAITKIND_IGNORE: | |
3920 | case TARGET_WAITKIND_NO_RESUMED: | |
3921 | case TARGET_WAITKIND_SIGNALLED: | |
3922 | case TARGET_WAITKIND_EXITED: | |
3923 | /* We shouldn't see these, but if we do, just ignore. */ | |
3924 | if (remote_debug) | |
3925 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3926 | ignore_event = 1; | |
3927 | break; | |
3928 | ||
3929 | case TARGET_WAITKIND_EXECD: | |
3930 | xfree (ws.value.execd_pathname); | |
3931 | break; | |
3932 | default: | |
3933 | break; | |
3934 | } | |
3935 | ||
3936 | if (ignore_event) | |
3937 | continue; | |
3938 | ||
6efcd9a8 | 3939 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3940 | |
3941 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3942 | { | |
3943 | enum gdb_signal sig = ws.value.sig; | |
3944 | ||
3945 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3946 | instead of signal 0. Suppress it. */ | |
3947 | if (sig == GDB_SIGNAL_TRAP) | |
3948 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3949 | thread->suspend.stop_signal = sig; |
3950 | ws.value.sig = sig; | |
3951 | } | |
221e1a37 | 3952 | |
6efcd9a8 PA |
3953 | thread->suspend.waitstatus = ws; |
3954 | ||
3955 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3956 | || ws.value.sig != GDB_SIGNAL_0) | |
3957 | thread->suspend.waitstatus_pending_p = 1; | |
3958 | ||
3959 | set_executing (event_ptid, 0); | |
3960 | set_running (event_ptid, 0); | |
85ad3aaf | 3961 | thread->priv->vcont_resumed = 0; |
6efcd9a8 PA |
3962 | } |
3963 | ||
3964 | /* "Notice" the new inferiors before anything related to | |
3965 | registers/memory. */ | |
3966 | ALL_INFERIORS (inf) | |
3967 | { | |
3968 | if (inf->pid == 0) | |
3969 | continue; | |
3970 | ||
3971 | inf->needs_setup = 1; | |
3972 | ||
3973 | if (non_stop) | |
3974 | { | |
3975 | thread = any_live_thread_of_process (inf->pid); | |
3976 | notice_new_inferior (thread->ptid, | |
3977 | thread->state == THREAD_RUNNING, | |
3978 | from_tty); | |
3979 | } | |
3980 | } | |
3981 | ||
3982 | /* If all-stop on top of non-stop, pause all threads. Note this | |
3983 | records the threads' stop pc, so must be done after "noticing" | |
3984 | the inferiors. */ | |
3985 | if (!non_stop) | |
3986 | { | |
3987 | stop_all_threads (); | |
3988 | ||
3989 | /* If all threads of an inferior were already stopped, we | |
3990 | haven't setup the inferior yet. */ | |
3991 | ALL_INFERIORS (inf) | |
3992 | { | |
3993 | if (inf->pid == 0) | |
3994 | continue; | |
221e1a37 | 3995 | |
6efcd9a8 PA |
3996 | if (inf->needs_setup) |
3997 | { | |
3998 | thread = any_live_thread_of_process (inf->pid); | |
3999 | switch_to_thread_no_regs (thread); | |
4000 | setup_inferior (0); | |
4001 | } | |
4002 | } | |
221e1a37 | 4003 | } |
6efcd9a8 PA |
4004 | |
4005 | /* Now go over all threads that are stopped, and print their current | |
4006 | frame. If all-stop, then if there's a signalled thread, pick | |
4007 | that as current. */ | |
4008 | ALL_NON_EXITED_THREADS (thread) | |
4009 | { | |
6efcd9a8 PA |
4010 | if (first == NULL) |
4011 | first = thread; | |
4012 | ||
4013 | if (!non_stop) | |
4014 | set_running (thread->ptid, 0); | |
4015 | else if (thread->state != THREAD_STOPPED) | |
4016 | continue; | |
4017 | ||
6efcd9a8 PA |
4018 | if (selected == NULL |
4019 | && thread->suspend.waitstatus_pending_p) | |
4020 | selected = thread; | |
4021 | ||
5d5658a1 PA |
4022 | if (lowest_stopped == NULL |
4023 | || thread->inf->num < lowest_stopped->inf->num | |
4024 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4025 | lowest_stopped = thread; |
4026 | ||
4027 | if (non_stop) | |
4028 | print_one_stopped_thread (thread); | |
4029 | } | |
4030 | ||
4031 | /* In all-stop, we only print the status of one thread, and leave | |
4032 | others with their status pending. */ | |
4033 | if (!non_stop) | |
4034 | { | |
4035 | thread = selected; | |
4036 | if (thread == NULL) | |
4037 | thread = lowest_stopped; | |
4038 | if (thread == NULL) | |
4039 | thread = first; | |
4040 | ||
4041 | print_one_stopped_thread (thread); | |
4042 | } | |
4043 | ||
4044 | /* For "info program". */ | |
4045 | thread = inferior_thread (); | |
4046 | if (thread->state == THREAD_STOPPED) | |
4047 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4048 | } |
4049 | ||
048094ac PA |
4050 | /* Start the remote connection and sync state. */ |
4051 | ||
9cbc821d | 4052 | static void |
04bd08de | 4053 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 4054 | { |
c8d104ad PA |
4055 | struct remote_state *rs = get_remote_state (); |
4056 | struct packet_config *noack_config; | |
2d717e4f | 4057 | char *wait_status = NULL; |
8621d6a9 | 4058 | |
048094ac PA |
4059 | /* Signal other parts that we're going through the initial setup, |
4060 | and so things may not be stable yet. E.g., we don't try to | |
4061 | install tracepoints until we've relocated symbols. Also, a | |
4062 | Ctrl-C before we're connected and synced up can't interrupt the | |
4063 | target. Instead, it offers to drop the (potentially wedged) | |
4064 | connection. */ | |
4065 | rs->starting_up = 1; | |
4066 | ||
522002f9 | 4067 | QUIT; |
c906108c | 4068 | |
9a7071a8 JB |
4069 | if (interrupt_on_connect) |
4070 | send_interrupt_sequence (); | |
4071 | ||
57e12211 | 4072 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4073 | remote_serial_write ("+", 1); |
1e51243a | 4074 | |
c8d104ad PA |
4075 | /* The first packet we send to the target is the optional "supported |
4076 | packets" request. If the target can answer this, it will tell us | |
4077 | which later probes to skip. */ | |
4078 | remote_query_supported (); | |
4079 | ||
d914c394 | 4080 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4081 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4082 | remote_set_permissions (target); |
d914c394 | 4083 | |
57809e5e JK |
4084 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4085 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4086 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4087 | invalid reply and GDB would return error in | |
4088 | remote_hostio_set_filesystem, making remote files access impossible. | |
4089 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4090 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4091 | { | |
4092 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4093 | ||
4094 | putpkt (v_mustreplyempty); | |
4095 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4096 | if (strcmp (rs->buf, "OK") == 0) | |
4097 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4098 | else if (strcmp (rs->buf, "") != 0) | |
4099 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4100 | rs->buf); | |
4101 | } | |
4102 | ||
c8d104ad PA |
4103 | /* Next, we possibly activate noack mode. |
4104 | ||
4105 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4106 | enable noack mode if the stub reported a wish for it with | |
4107 | qSupported. | |
4108 | ||
4109 | If set to TRUE, then enable noack mode even if the stub didn't | |
4110 | report it in qSupported. If the stub doesn't reply OK, the | |
4111 | session ends with an error. | |
4112 | ||
4113 | If FALSE, then don't activate noack mode, regardless of what the | |
4114 | stub claimed should be the default with qSupported. */ | |
4115 | ||
4116 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4117 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4118 | { |
4119 | putpkt ("QStartNoAckMode"); | |
4120 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4121 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4122 | rs->noack_mode = 1; | |
4123 | } | |
4124 | ||
04bd08de | 4125 | if (extended_p) |
5fe04517 PA |
4126 | { |
4127 | /* Tell the remote that we are using the extended protocol. */ | |
4128 | putpkt ("!"); | |
4129 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4130 | } | |
4131 | ||
9b224c5e PA |
4132 | /* Let the target know which signals it is allowed to pass down to |
4133 | the program. */ | |
4134 | update_signals_program_target (); | |
4135 | ||
d962ef82 DJ |
4136 | /* Next, if the target can specify a description, read it. We do |
4137 | this before anything involving memory or registers. */ | |
4138 | target_find_description (); | |
4139 | ||
6c95b8df PA |
4140 | /* Next, now that we know something about the target, update the |
4141 | address spaces in the program spaces. */ | |
4142 | update_address_spaces (); | |
4143 | ||
50c71eaf PA |
4144 | /* On OSs where the list of libraries is global to all |
4145 | processes, we fetch them early. */ | |
f5656ead | 4146 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4147 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4148 | |
6efcd9a8 | 4149 | if (target_is_non_stop_p ()) |
74531fed | 4150 | { |
4082afcc | 4151 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4152 | error (_("Non-stop mode requested, but remote " |
4153 | "does not support non-stop")); | |
74531fed PA |
4154 | |
4155 | putpkt ("QNonStop:1"); | |
4156 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4157 | ||
4158 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4159 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4160 | |
4161 | /* Find about threads and processes the stub is already | |
4162 | controlling. We default to adding them in the running state. | |
4163 | The '?' query below will then tell us about which threads are | |
4164 | stopped. */ | |
e8032dde | 4165 | remote_update_thread_list (target); |
74531fed | 4166 | } |
4082afcc | 4167 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4168 | { |
4169 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4170 | Request it explicitly. */ |
74531fed PA |
4171 | putpkt ("QNonStop:0"); |
4172 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4173 | ||
4174 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4175 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4176 | } |
4177 | ||
a0743c90 YQ |
4178 | /* Upload TSVs regardless of whether the target is running or not. The |
4179 | remote stub, such as GDBserver, may have some predefined or builtin | |
4180 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4181 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4182 | { |
4183 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4184 | ||
181e3713 | 4185 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4186 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4187 | } | |
4188 | ||
2d717e4f DJ |
4189 | /* Check whether the target is running now. */ |
4190 | putpkt ("?"); | |
4191 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4192 | ||
6efcd9a8 | 4193 | if (!target_is_non_stop_p ()) |
2d717e4f | 4194 | { |
74531fed | 4195 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4196 | { |
04bd08de | 4197 | if (!extended_p) |
74531fed | 4198 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4199 | |
4200 | /* We're connected, but not running. Drop out before we | |
4201 | call start_remote. */ | |
e278ad5b | 4202 | rs->starting_up = 0; |
c35b1492 | 4203 | return; |
2d717e4f DJ |
4204 | } |
4205 | else | |
74531fed | 4206 | { |
74531fed | 4207 | /* Save the reply for later. */ |
224c3ddb | 4208 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4209 | strcpy (wait_status, rs->buf); |
4210 | } | |
4211 | ||
b7ea362b | 4212 | /* Fetch thread list. */ |
e8032dde | 4213 | target_update_thread_list (); |
b7ea362b | 4214 | |
74531fed PA |
4215 | /* Let the stub know that we want it to return the thread. */ |
4216 | set_continue_thread (minus_one_ptid); | |
4217 | ||
b7ea362b PA |
4218 | if (thread_count () == 0) |
4219 | { | |
4220 | /* Target has no concept of threads at all. GDB treats | |
4221 | non-threaded target as single-threaded; add a main | |
4222 | thread. */ | |
4223 | add_current_inferior_and_thread (wait_status); | |
4224 | } | |
4225 | else | |
4226 | { | |
4227 | /* We have thread information; select the thread the target | |
4228 | says should be current. If we're reconnecting to a | |
4229 | multi-threaded program, this will ideally be the thread | |
4230 | that last reported an event before GDB disconnected. */ | |
4231 | inferior_ptid = get_current_thread (wait_status); | |
4232 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4233 | { | |
4234 | /* Odd... The target was able to list threads, but not | |
4235 | tell us which thread was current (no "thread" | |
4236 | register in T stop reply?). Just pick the first | |
4237 | thread in the thread list then. */ | |
c9f35b34 KB |
4238 | |
4239 | if (remote_debug) | |
4240 | fprintf_unfiltered (gdb_stdlog, | |
4241 | "warning: couldn't determine remote " | |
4242 | "current thread; picking first in list.\n"); | |
4243 | ||
b7ea362b PA |
4244 | inferior_ptid = thread_list->ptid; |
4245 | } | |
4246 | } | |
74531fed | 4247 | |
6e586cc5 YQ |
4248 | /* init_wait_for_inferior should be called before get_offsets in order |
4249 | to manage `inserted' flag in bp loc in a correct state. | |
4250 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4251 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4252 | start_remote, set `inserted' flag to 1. In the initialization of | |
4253 | inferior, breakpoint_init_inferior should be called first, and then | |
4254 | breakpoint_re_set can be called. If this order is broken, state of | |
4255 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4256 | manipulation. */ | |
4257 | init_wait_for_inferior (); | |
4258 | ||
74531fed PA |
4259 | get_offsets (); /* Get text, data & bss offsets. */ |
4260 | ||
d962ef82 DJ |
4261 | /* If we could not find a description using qXfer, and we know |
4262 | how to do it some other way, try again. This is not | |
4263 | supported for non-stop; it could be, but it is tricky if | |
4264 | there are no stopped threads when we connect. */ | |
04bd08de | 4265 | if (remote_read_description_p (target) |
f5656ead | 4266 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4267 | { |
4268 | target_clear_description (); | |
4269 | target_find_description (); | |
4270 | } | |
4271 | ||
74531fed PA |
4272 | /* Use the previously fetched status. */ |
4273 | gdb_assert (wait_status != NULL); | |
4274 | strcpy (rs->buf, wait_status); | |
4275 | rs->cached_wait_status = 1; | |
4276 | ||
04bd08de | 4277 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4278 | } |
4279 | else | |
4280 | { | |
68c97600 PA |
4281 | /* Clear WFI global state. Do this before finding about new |
4282 | threads and inferiors, and setting the current inferior. | |
4283 | Otherwise we would clear the proceed status of the current | |
4284 | inferior when we want its stop_soon state to be preserved | |
4285 | (see notice_new_inferior). */ | |
4286 | init_wait_for_inferior (); | |
4287 | ||
74531fed PA |
4288 | /* In non-stop, we will either get an "OK", meaning that there |
4289 | are no stopped threads at this time; or, a regular stop | |
4290 | reply. In the latter case, there may be more than one thread | |
4291 | stopped --- we pull them all out using the vStopped | |
4292 | mechanism. */ | |
4293 | if (strcmp (rs->buf, "OK") != 0) | |
4294 | { | |
722247f1 | 4295 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4296 | |
722247f1 YQ |
4297 | /* remote_notif_get_pending_replies acks this one, and gets |
4298 | the rest out. */ | |
f48ff2a7 | 4299 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4300 | = remote_notif_parse (notif, rs->buf); |
4301 | remote_notif_get_pending_events (notif); | |
74531fed | 4302 | } |
2d717e4f | 4303 | |
74531fed PA |
4304 | if (thread_count () == 0) |
4305 | { | |
04bd08de | 4306 | if (!extended_p) |
74531fed | 4307 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4308 | |
c35b1492 PA |
4309 | /* We're connected, but not running. Drop out before we |
4310 | call start_remote. */ | |
e278ad5b | 4311 | rs->starting_up = 0; |
c35b1492 PA |
4312 | return; |
4313 | } | |
74531fed | 4314 | |
74531fed PA |
4315 | /* In non-stop mode, any cached wait status will be stored in |
4316 | the stop reply queue. */ | |
4317 | gdb_assert (wait_status == NULL); | |
f0223081 | 4318 | |
2455069d | 4319 | /* Report all signals during attach/startup. */ |
94bedb42 | 4320 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4321 | |
4322 | /* If there are already stopped threads, mark them stopped and | |
4323 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4324 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4325 | |
4326 | if (target_can_async_p ()) | |
4327 | target_async (1); | |
74531fed | 4328 | } |
c8d104ad | 4329 | |
c8d104ad PA |
4330 | /* If we connected to a live target, do some additional setup. */ |
4331 | if (target_has_execution) | |
4332 | { | |
f4ccffad | 4333 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4334 | remote_check_symbols (); |
c8d104ad | 4335 | } |
50c71eaf | 4336 | |
d5551862 SS |
4337 | /* Possibly the target has been engaged in a trace run started |
4338 | previously; find out where things are at. */ | |
8bd200f1 | 4339 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4340 | { |
00bf0b85 | 4341 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4342 | |
00bf0b85 SS |
4343 | if (current_trace_status ()->running) |
4344 | printf_filtered (_("Trace is already running on the target.\n")); | |
4345 | ||
ab6617cc | 4346 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4347 | |
4348 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4349 | } |
4350 | ||
c0272db5 TW |
4351 | /* Possibly the target has been engaged in a btrace record started |
4352 | previously; find out where things are at. */ | |
4353 | remote_btrace_maybe_reopen (); | |
4354 | ||
1e51243a PA |
4355 | /* The thread and inferior lists are now synchronized with the |
4356 | target, our symbols have been relocated, and we're merged the | |
4357 | target's tracepoints with ours. We're done with basic start | |
4358 | up. */ | |
4359 | rs->starting_up = 0; | |
4360 | ||
a25a5a45 PA |
4361 | /* Maybe breakpoints are global and need to be inserted now. */ |
4362 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4363 | insert_breakpoints (); |
c906108c SS |
4364 | } |
4365 | ||
4366 | /* Open a connection to a remote debugger. | |
4367 | NAME is the filename used for communication. */ | |
4368 | ||
4369 | static void | |
014f9477 | 4370 | remote_open (const char *name, int from_tty) |
c906108c | 4371 | { |
75c99385 | 4372 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4373 | } |
4374 | ||
c906108c SS |
4375 | /* Open a connection to a remote debugger using the extended |
4376 | remote gdb protocol. NAME is the filename used for communication. */ | |
4377 | ||
4378 | static void | |
014f9477 | 4379 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4380 | { |
75c99385 | 4381 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4382 | } |
4383 | ||
ca4f7f8b PA |
4384 | /* Reset all packets back to "unknown support". Called when opening a |
4385 | new connection to a remote target. */ | |
c906108c | 4386 | |
d471ea57 | 4387 | static void |
ca4f7f8b | 4388 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4389 | { |
4390 | int i; | |
a744cf53 | 4391 | |
444abaca | 4392 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4393 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4394 | } |
4395 | ||
ca4f7f8b PA |
4396 | /* Initialize all packet configs. */ |
4397 | ||
4398 | static void | |
4399 | init_all_packet_configs (void) | |
4400 | { | |
4401 | int i; | |
4402 | ||
4403 | for (i = 0; i < PACKET_MAX; i++) | |
4404 | { | |
4405 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4406 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4407 | } | |
4408 | } | |
4409 | ||
23860348 | 4410 | /* Symbol look-up. */ |
dc8acb97 MS |
4411 | |
4412 | static void | |
36d25514 | 4413 | remote_check_symbols (void) |
dc8acb97 | 4414 | { |
d01949b6 | 4415 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4416 | char *msg, *reply, *tmp; |
dc8acb97 | 4417 | int end; |
28170b88 | 4418 | long reply_size; |
a5c0808e | 4419 | struct cleanup *old_chain; |
dc8acb97 | 4420 | |
63154eca PA |
4421 | /* The remote side has no concept of inferiors that aren't running |
4422 | yet, it only knows about running processes. If we're connected | |
4423 | but our current inferior is not running, we should not invite the | |
4424 | remote target to request symbol lookups related to its | |
4425 | (unrelated) current process. */ | |
4426 | if (!target_has_execution) | |
4427 | return; | |
4428 | ||
4082afcc | 4429 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4430 | return; |
4431 | ||
63154eca PA |
4432 | /* Make sure the remote is pointing at the right process. Note |
4433 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4434 | set_general_process (); |
4435 | ||
6d820c5c DJ |
4436 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4437 | because we need both at the same time. */ | |
224c3ddb | 4438 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4439 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4440 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4441 | make_cleanup (free_current_contents, &reply); | |
4442 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4443 | |
23860348 | 4444 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4445 | |
4446 | putpkt ("qSymbol::"); | |
28170b88 MK |
4447 | getpkt (&reply, &reply_size, 0); |
4448 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4449 | |
61012eef | 4450 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4451 | { |
77e371c0 TT |
4452 | struct bound_minimal_symbol sym; |
4453 | ||
dc8acb97 | 4454 | tmp = &reply[8]; |
cfd77fa1 | 4455 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4456 | msg[end] = '\0'; |
4457 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4458 | if (sym.minsym == NULL) |
ea9c271d | 4459 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4460 | else |
2bbe3cc1 | 4461 | { |
f5656ead | 4462 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4463 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4464 | |
4465 | /* If this is a function address, return the start of code | |
4466 | instead of any data function descriptor. */ | |
f5656ead | 4467 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4468 | sym_addr, |
4469 | ¤t_target); | |
4470 | ||
4471 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4472 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4473 | } |
4474 | ||
dc8acb97 | 4475 | putpkt (msg); |
28170b88 | 4476 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4477 | } |
a5c0808e PA |
4478 | |
4479 | do_cleanups (old_chain); | |
dc8acb97 MS |
4480 | } |
4481 | ||
9db8d71f | 4482 | static struct serial * |
baa336ce | 4483 | remote_serial_open (const char *name) |
9db8d71f DJ |
4484 | { |
4485 | static int udp_warning = 0; | |
4486 | ||
4487 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4488 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4489 | serial connection is reliable and not the serial connection promising | |
4490 | to be. */ | |
61012eef | 4491 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4492 | { |
3e43a32a MS |
4493 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4494 | "Some events may be lost, rendering further debugging " | |
4495 | "impossible.")); | |
9db8d71f DJ |
4496 | udp_warning = 1; |
4497 | } | |
4498 | ||
4499 | return serial_open (name); | |
4500 | } | |
4501 | ||
d914c394 SS |
4502 | /* Inform the target of our permission settings. The permission flags |
4503 | work without this, but if the target knows the settings, it can do | |
4504 | a couple things. First, it can add its own check, to catch cases | |
4505 | that somehow manage to get by the permissions checks in target | |
4506 | methods. Second, if the target is wired to disallow particular | |
4507 | settings (for instance, a system in the field that is not set up to | |
4508 | be able to stop at a breakpoint), it can object to any unavailable | |
4509 | permissions. */ | |
4510 | ||
4511 | void | |
c378d69d | 4512 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4513 | { |
4514 | struct remote_state *rs = get_remote_state (); | |
4515 | ||
bba74b36 YQ |
4516 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4517 | "WriteReg:%x;WriteMem:%x;" | |
4518 | "InsertBreak:%x;InsertTrace:%x;" | |
4519 | "InsertFastTrace:%x;Stop:%x", | |
4520 | may_write_registers, may_write_memory, | |
4521 | may_insert_breakpoints, may_insert_tracepoints, | |
4522 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4523 | putpkt (rs->buf); |
4524 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4525 | ||
4526 | /* If the target didn't like the packet, warn the user. Do not try | |
4527 | to undo the user's settings, that would just be maddening. */ | |
4528 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4529 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4530 | } |
4531 | ||
be2a5f71 DJ |
4532 | /* This type describes each known response to the qSupported |
4533 | packet. */ | |
4534 | struct protocol_feature | |
4535 | { | |
4536 | /* The name of this protocol feature. */ | |
4537 | const char *name; | |
4538 | ||
4539 | /* The default for this protocol feature. */ | |
4540 | enum packet_support default_support; | |
4541 | ||
4542 | /* The function to call when this feature is reported, or after | |
4543 | qSupported processing if the feature is not supported. | |
4544 | The first argument points to this structure. The second | |
4545 | argument indicates whether the packet requested support be | |
4546 | enabled, disabled, or probed (or the default, if this function | |
4547 | is being called at the end of processing and this feature was | |
4548 | not reported). The third argument may be NULL; if not NULL, it | |
4549 | is a NUL-terminated string taken from the packet following | |
4550 | this feature's name and an equals sign. */ | |
4551 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4552 | const char *); | |
4553 | ||
4554 | /* The corresponding packet for this feature. Only used if | |
4555 | FUNC is remote_supported_packet. */ | |
4556 | int packet; | |
4557 | }; | |
4558 | ||
be2a5f71 DJ |
4559 | static void |
4560 | remote_supported_packet (const struct protocol_feature *feature, | |
4561 | enum packet_support support, | |
4562 | const char *argument) | |
4563 | { | |
4564 | if (argument) | |
4565 | { | |
4566 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4567 | " \"%s\"."), feature->name); | |
4568 | return; | |
4569 | } | |
4570 | ||
4082afcc | 4571 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4572 | } |
be2a5f71 DJ |
4573 | |
4574 | static void | |
4575 | remote_packet_size (const struct protocol_feature *feature, | |
4576 | enum packet_support support, const char *value) | |
4577 | { | |
4578 | struct remote_state *rs = get_remote_state (); | |
4579 | ||
4580 | int packet_size; | |
4581 | char *value_end; | |
4582 | ||
4583 | if (support != PACKET_ENABLE) | |
4584 | return; | |
4585 | ||
4586 | if (value == NULL || *value == '\0') | |
4587 | { | |
4588 | warning (_("Remote target reported \"%s\" without a size."), | |
4589 | feature->name); | |
4590 | return; | |
4591 | } | |
4592 | ||
4593 | errno = 0; | |
4594 | packet_size = strtol (value, &value_end, 16); | |
4595 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4596 | { | |
4597 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4598 | feature->name, value); | |
4599 | return; | |
4600 | } | |
4601 | ||
be2a5f71 DJ |
4602 | /* Record the new maximum packet size. */ |
4603 | rs->explicit_packet_size = packet_size; | |
4604 | } | |
4605 | ||
dc473cfb | 4606 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4607 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4608 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4609 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4610 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4611 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4612 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4613 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4614 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4615 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4616 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4617 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4618 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4619 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4620 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4621 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4622 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4623 | PACKET_qXfer_spu_read }, | |
4624 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4625 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4626 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4627 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4628 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4629 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4630 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4631 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4632 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4633 | PACKET_QPassSignals }, | |
82075af2 JS |
4634 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4635 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4636 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4637 | PACKET_QProgramSignals }, | |
aefd8b33 SDJ |
4638 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4639 | PACKET_QStartupWithShell }, | |
a6f3e723 SL |
4640 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4641 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4642 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4643 | PACKET_multiprocess_feature }, | |
4644 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4645 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4646 | PACKET_qXfer_siginfo_read }, | |
4647 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4648 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4649 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4650 | PACKET_ConditionalTracepoints }, |
4082afcc | 4651 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4652 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4653 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4654 | PACKET_BreakpointCommands }, |
4082afcc | 4655 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4656 | PACKET_FastTracepoints }, |
4082afcc | 4657 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4658 | PACKET_StaticTracepoints }, |
4082afcc | 4659 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4660 | PACKET_InstallInTrace}, |
4082afcc PA |
4661 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4662 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4663 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4664 | PACKET_bc }, | |
4665 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4666 | PACKET_bs }, | |
409873ef SS |
4667 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4668 | PACKET_TracepointSource }, | |
d914c394 SS |
4669 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4670 | PACKET_QAllow }, | |
4082afcc PA |
4671 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4672 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4673 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4674 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4675 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4676 | PACKET_qXfer_uib }, | |
03583c20 UW |
4677 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4678 | PACKET_QDisableRandomization }, | |
d1feda86 | 4679 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4680 | { "QTBuffer:size", PACKET_DISABLE, |
4681 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4682 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4683 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4684 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4685 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4686 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4687 | PACKET_qXfer_btrace }, |
4688 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4689 | PACKET_qXfer_btrace_conf }, |
4690 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4691 | PACKET_Qbtrace_conf_bts_size }, |
4692 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4693 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4694 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4695 | PACKET_fork_event_feature }, | |
4696 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4697 | PACKET_vfork_event_feature }, | |
94585166 DB |
4698 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4699 | PACKET_exec_event_feature }, | |
b20a6524 | 4700 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4701 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4702 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4703 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4704 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4705 | }; |
4706 | ||
c8d5aac9 L |
4707 | static char *remote_support_xml; |
4708 | ||
4709 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4710 | ||
4711 | void | |
6e39997a | 4712 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4713 | { |
4714 | #if defined(HAVE_LIBEXPAT) | |
4715 | if (remote_support_xml == NULL) | |
c4f7c687 | 4716 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4717 | else |
4718 | { | |
4719 | char *copy = xstrdup (remote_support_xml + 13); | |
4720 | char *p = strtok (copy, ","); | |
4721 | ||
4722 | do | |
4723 | { | |
4724 | if (strcmp (p, xml) == 0) | |
4725 | { | |
4726 | /* already there */ | |
4727 | xfree (copy); | |
4728 | return; | |
4729 | } | |
4730 | } | |
4731 | while ((p = strtok (NULL, ",")) != NULL); | |
4732 | xfree (copy); | |
4733 | ||
94b0dee1 PA |
4734 | remote_support_xml = reconcat (remote_support_xml, |
4735 | remote_support_xml, ",", xml, | |
4736 | (char *) NULL); | |
c8d5aac9 L |
4737 | } |
4738 | #endif | |
4739 | } | |
4740 | ||
4741 | static char * | |
4742 | remote_query_supported_append (char *msg, const char *append) | |
4743 | { | |
4744 | if (msg) | |
94b0dee1 | 4745 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4746 | else |
4747 | return xstrdup (append); | |
4748 | } | |
4749 | ||
be2a5f71 DJ |
4750 | static void |
4751 | remote_query_supported (void) | |
4752 | { | |
4753 | struct remote_state *rs = get_remote_state (); | |
4754 | char *next; | |
4755 | int i; | |
4756 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4757 | ||
4758 | /* The packet support flags are handled differently for this packet | |
4759 | than for most others. We treat an error, a disabled packet, and | |
4760 | an empty response identically: any features which must be reported | |
4761 | to be used will be automatically disabled. An empty buffer | |
4762 | accomplishes this, since that is also the representation for a list | |
4763 | containing no features. */ | |
4764 | ||
4765 | rs->buf[0] = 0; | |
4082afcc | 4766 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4767 | { |
c8d5aac9 | 4768 | char *q = NULL; |
94b0dee1 | 4769 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4770 | |
73b8c1fd PA |
4771 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4772 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4773 | |
f7e6eed5 PA |
4774 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4775 | q = remote_query_supported_append (q, "swbreak+"); | |
4776 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4777 | q = remote_query_supported_append (q, "hwbreak+"); | |
4778 | ||
dde08ee1 PA |
4779 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4780 | ||
8020350c DB |
4781 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4782 | != AUTO_BOOLEAN_FALSE) | |
4783 | q = remote_query_supported_append (q, "fork-events+"); | |
4784 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4785 | != AUTO_BOOLEAN_FALSE) | |
4786 | q = remote_query_supported_append (q, "vfork-events+"); | |
4787 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4788 | != AUTO_BOOLEAN_FALSE) | |
4789 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4790 | |
750ce8d1 YQ |
4791 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4792 | q = remote_query_supported_append (q, "vContSupported+"); | |
4793 | ||
65706a29 PA |
4794 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4795 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4796 | ||
f2faf941 PA |
4797 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4798 | q = remote_query_supported_append (q, "no-resumed+"); | |
4799 | ||
b35d5edb PA |
4800 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4801 | the qSupported:xmlRegisters=i386 handling. */ | |
4802 | if (remote_support_xml != NULL) | |
4803 | q = remote_query_supported_append (q, remote_support_xml); | |
4804 | ||
dde08ee1 PA |
4805 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4806 | putpkt (q); | |
82f73884 | 4807 | |
94b0dee1 PA |
4808 | do_cleanups (old_chain); |
4809 | ||
be2a5f71 DJ |
4810 | getpkt (&rs->buf, &rs->buf_size, 0); |
4811 | ||
4812 | /* If an error occured, warn, but do not return - just reset the | |
4813 | buffer to empty and go on to disable features. */ | |
4814 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4815 | == PACKET_ERROR) | |
4816 | { | |
4817 | warning (_("Remote failure reply: %s"), rs->buf); | |
4818 | rs->buf[0] = 0; | |
4819 | } | |
4820 | } | |
4821 | ||
4822 | memset (seen, 0, sizeof (seen)); | |
4823 | ||
4824 | next = rs->buf; | |
4825 | while (*next) | |
4826 | { | |
4827 | enum packet_support is_supported; | |
4828 | char *p, *end, *name_end, *value; | |
4829 | ||
4830 | /* First separate out this item from the rest of the packet. If | |
4831 | there's another item after this, we overwrite the separator | |
4832 | (terminated strings are much easier to work with). */ | |
4833 | p = next; | |
4834 | end = strchr (p, ';'); | |
4835 | if (end == NULL) | |
4836 | { | |
4837 | end = p + strlen (p); | |
4838 | next = end; | |
4839 | } | |
4840 | else | |
4841 | { | |
89be2091 DJ |
4842 | *end = '\0'; |
4843 | next = end + 1; | |
4844 | ||
be2a5f71 DJ |
4845 | if (end == p) |
4846 | { | |
4847 | warning (_("empty item in \"qSupported\" response")); | |
4848 | continue; | |
4849 | } | |
be2a5f71 DJ |
4850 | } |
4851 | ||
4852 | name_end = strchr (p, '='); | |
4853 | if (name_end) | |
4854 | { | |
4855 | /* This is a name=value entry. */ | |
4856 | is_supported = PACKET_ENABLE; | |
4857 | value = name_end + 1; | |
4858 | *name_end = '\0'; | |
4859 | } | |
4860 | else | |
4861 | { | |
4862 | value = NULL; | |
4863 | switch (end[-1]) | |
4864 | { | |
4865 | case '+': | |
4866 | is_supported = PACKET_ENABLE; | |
4867 | break; | |
4868 | ||
4869 | case '-': | |
4870 | is_supported = PACKET_DISABLE; | |
4871 | break; | |
4872 | ||
4873 | case '?': | |
4874 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4875 | break; | |
4876 | ||
4877 | default: | |
3e43a32a MS |
4878 | warning (_("unrecognized item \"%s\" " |
4879 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4880 | continue; |
4881 | } | |
4882 | end[-1] = '\0'; | |
4883 | } | |
4884 | ||
4885 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4886 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4887 | { | |
4888 | const struct protocol_feature *feature; | |
4889 | ||
4890 | seen[i] = 1; | |
4891 | feature = &remote_protocol_features[i]; | |
4892 | feature->func (feature, is_supported, value); | |
4893 | break; | |
4894 | } | |
4895 | } | |
4896 | ||
4897 | /* If we increased the packet size, make sure to increase the global | |
4898 | buffer size also. We delay this until after parsing the entire | |
4899 | qSupported packet, because this is the same buffer we were | |
4900 | parsing. */ | |
4901 | if (rs->buf_size < rs->explicit_packet_size) | |
4902 | { | |
4903 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4904 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4905 | } |
4906 | ||
4907 | /* Handle the defaults for unmentioned features. */ | |
4908 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4909 | if (!seen[i]) | |
4910 | { | |
4911 | const struct protocol_feature *feature; | |
4912 | ||
4913 | feature = &remote_protocol_features[i]; | |
4914 | feature->func (feature, feature->default_support, NULL); | |
4915 | } | |
4916 | } | |
4917 | ||
048094ac PA |
4918 | /* Serial QUIT handler for the remote serial descriptor. |
4919 | ||
4920 | Defers handling a Ctrl-C until we're done with the current | |
4921 | command/response packet sequence, unless: | |
4922 | ||
4923 | - We're setting up the connection. Don't send a remote interrupt | |
4924 | request, as we're not fully synced yet. Quit immediately | |
4925 | instead. | |
4926 | ||
4927 | - The target has been resumed in the foreground | |
4928 | (target_terminal_is_ours is false) with a synchronous resume | |
4929 | packet, and we're blocked waiting for the stop reply, thus a | |
4930 | Ctrl-C should be immediately sent to the target. | |
4931 | ||
4932 | - We get a second Ctrl-C while still within the same serial read or | |
4933 | write. In that case the serial is seemingly wedged --- offer to | |
4934 | quit/disconnect. | |
4935 | ||
4936 | - We see a second Ctrl-C without target response, after having | |
4937 | previously interrupted the target. In that case the target/stub | |
4938 | is probably wedged --- offer to quit/disconnect. | |
4939 | */ | |
4940 | ||
4941 | static void | |
4942 | remote_serial_quit_handler (void) | |
4943 | { | |
4944 | struct remote_state *rs = get_remote_state (); | |
4945 | ||
4946 | if (check_quit_flag ()) | |
4947 | { | |
4948 | /* If we're starting up, we're not fully synced yet. Quit | |
4949 | immediately. */ | |
4950 | if (rs->starting_up) | |
4951 | quit (); | |
4952 | else if (rs->got_ctrlc_during_io) | |
4953 | { | |
4954 | if (query (_("The target is not responding to GDB commands.\n" | |
4955 | "Stop debugging it? "))) | |
4956 | remote_unpush_and_throw (); | |
4957 | } | |
4958 | /* If ^C has already been sent once, offer to disconnect. */ | |
4959 | else if (!target_terminal_is_ours () && rs->ctrlc_pending_p) | |
4960 | interrupt_query (); | |
4961 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
4962 | an interrupt request. */ | |
4963 | else if (!target_terminal_is_ours () && rs->waiting_for_stop_reply) | |
4964 | target_interrupt (inferior_ptid); | |
4965 | else | |
4966 | rs->got_ctrlc_during_io = 1; | |
4967 | } | |
4968 | } | |
4969 | ||
78a095c3 JK |
4970 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4971 | on it so remove them first. */ | |
4972 | ||
4973 | static void | |
4974 | remote_unpush_target (void) | |
4975 | { | |
915ef8b1 | 4976 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 4977 | } |
be2a5f71 | 4978 | |
048094ac PA |
4979 | static void |
4980 | remote_unpush_and_throw (void) | |
4981 | { | |
4982 | remote_unpush_target (); | |
4983 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
4984 | } | |
4985 | ||
c906108c | 4986 | static void |
014f9477 | 4987 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4988 | struct target_ops *target, int extended_p) |
c906108c | 4989 | { |
d01949b6 | 4990 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4991 | |
c906108c | 4992 | if (name == 0) |
8a3fe4f8 | 4993 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4994 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4995 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4996 | |
23860348 | 4997 | /* See FIXME above. */ |
c6ebd6cf | 4998 | if (!target_async_permitted) |
92d1e331 | 4999 | wait_forever_enabled_p = 1; |
6426a772 | 5000 | |
2d717e4f | 5001 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5002 | Ask this question first, before target_preopen has a chance to kill |
5003 | anything. */ | |
5d93a237 | 5004 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 5005 | { |
78a095c3 JK |
5006 | if (from_tty |
5007 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5008 | error (_("Still connected.")); |
5009 | } | |
5010 | ||
78a095c3 | 5011 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5012 | target_preopen (from_tty); |
5013 | ||
89be2091 | 5014 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
5015 | xfree (rs->last_pass_packet); |
5016 | rs->last_pass_packet = NULL; | |
89be2091 | 5017 | |
9b224c5e PA |
5018 | /* Make sure we send the program signals list the next time we |
5019 | resume. */ | |
5e4a05c4 TT |
5020 | xfree (rs->last_program_signals_packet); |
5021 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 5022 | |
ad9a8f3f | 5023 | remote_fileio_reset (); |
1dd41f16 NS |
5024 | reopen_exec_file (); |
5025 | reread_symbols (); | |
5026 | ||
5d93a237 TT |
5027 | rs->remote_desc = remote_serial_open (name); |
5028 | if (!rs->remote_desc) | |
c906108c SS |
5029 | perror_with_name (name); |
5030 | ||
5031 | if (baud_rate != -1) | |
5032 | { | |
5d93a237 | 5033 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5034 | { |
9b74d5d3 KB |
5035 | /* The requested speed could not be set. Error out to |
5036 | top level after closing remote_desc. Take care to | |
5037 | set remote_desc to NULL to avoid closing remote_desc | |
5038 | more than once. */ | |
5d93a237 TT |
5039 | serial_close (rs->remote_desc); |
5040 | rs->remote_desc = NULL; | |
c906108c SS |
5041 | perror_with_name (name); |
5042 | } | |
5043 | } | |
5044 | ||
236af5e3 | 5045 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5046 | serial_raw (rs->remote_desc); |
c906108c SS |
5047 | |
5048 | /* If there is something sitting in the buffer we might take it as a | |
5049 | response to a command, which would be bad. */ | |
5d93a237 | 5050 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5051 | |
5052 | if (from_tty) | |
5053 | { | |
5054 | puts_filtered ("Remote debugging using "); | |
5055 | puts_filtered (name); | |
5056 | puts_filtered ("\n"); | |
5057 | } | |
23860348 | 5058 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 5059 | |
74531fed PA |
5060 | /* Register extra event sources in the event loop. */ |
5061 | remote_async_inferior_event_token | |
5062 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5063 | NULL); | |
5965e028 | 5064 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5065 | |
be2a5f71 DJ |
5066 | /* Reset the target state; these things will be queried either by |
5067 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5068 | reset_all_packet_configs_support (); |
74531fed | 5069 | rs->cached_wait_status = 0; |
be2a5f71 | 5070 | rs->explicit_packet_size = 0; |
a6f3e723 | 5071 | rs->noack_mode = 0; |
82f73884 | 5072 | rs->extended = extended_p; |
e24a49d8 | 5073 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5074 | rs->ctrlc_pending_p = 0; |
048094ac | 5075 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5076 | |
47f8a51d TT |
5077 | rs->general_thread = not_sent_ptid; |
5078 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5079 | rs->remote_traceframe_number = -1; |
c906108c | 5080 | |
3a00c802 PA |
5081 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5082 | ||
9d1f7ab2 | 5083 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5084 | rs->use_threadinfo_query = 1; |
5085 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5086 | |
80152258 PA |
5087 | readahead_cache_invalidate (); |
5088 | ||
048094ac PA |
5089 | /* Start out by owning the terminal. */ |
5090 | remote_async_terminal_ours_p = 1; | |
5091 | ||
c6ebd6cf | 5092 | if (target_async_permitted) |
92d1e331 | 5093 | { |
92d1e331 DJ |
5094 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5095 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5096 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5097 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5098 | around this. Eventually a mechanism that allows |
92d1e331 | 5099 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5100 | implemented. */ |
92d1e331 DJ |
5101 | wait_forever_enabled_p = 0; |
5102 | } | |
5103 | ||
23860348 | 5104 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5105 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5106 | |
74531fed PA |
5107 | /* Start afresh. */ |
5108 | init_thread_list (); | |
5109 | ||
36918e70 | 5110 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5111 | target (we'd otherwise be in an inconsistent state) and then |
5112 | propogate the error on up the exception chain. This ensures that | |
5113 | the caller doesn't stumble along blindly assuming that the | |
5114 | function succeeded. The CLI doesn't have this problem but other | |
5115 | UI's, such as MI do. | |
36918e70 AC |
5116 | |
5117 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5118 | this function should return an error indication letting the | |
ce2826aa | 5119 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5120 | ``target remote'' is directly wired to this function making that |
5121 | impossible. On a positive note, the CLI side of this problem has | |
5122 | been fixed - the function set_cmd_context() makes it possible for | |
5123 | all the ``target ....'' commands to share a common callback | |
5124 | function. See cli-dump.c. */ | |
109c3e39 | 5125 | { |
2d717e4f | 5126 | |
492d29ea | 5127 | TRY |
04bd08de TT |
5128 | { |
5129 | remote_start_remote (from_tty, target, extended_p); | |
5130 | } | |
492d29ea | 5131 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5132 | { |
c8d104ad PA |
5133 | /* Pop the partially set up target - unless something else did |
5134 | already before throwing the exception. */ | |
5d93a237 | 5135 | if (rs->remote_desc != NULL) |
78a095c3 | 5136 | remote_unpush_target (); |
c6ebd6cf | 5137 | if (target_async_permitted) |
109c3e39 AC |
5138 | wait_forever_enabled_p = 1; |
5139 | throw_exception (ex); | |
5140 | } | |
492d29ea | 5141 | END_CATCH |
109c3e39 | 5142 | } |
c906108c | 5143 | |
f4abbc16 MM |
5144 | remote_btrace_reset (); |
5145 | ||
c6ebd6cf | 5146 | if (target_async_permitted) |
92d1e331 | 5147 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5148 | } |
5149 | ||
de0d863e DB |
5150 | /* Detach the specified process. */ |
5151 | ||
5152 | static void | |
5153 | remote_detach_pid (int pid) | |
5154 | { | |
5155 | struct remote_state *rs = get_remote_state (); | |
5156 | ||
5157 | if (remote_multi_process_p (rs)) | |
5158 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5159 | else | |
5160 | strcpy (rs->buf, "D"); | |
5161 | ||
5162 | putpkt (rs->buf); | |
5163 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5164 | ||
5165 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5166 | ; | |
5167 | else if (rs->buf[0] == '\0') | |
5168 | error (_("Remote doesn't know how to detach")); | |
5169 | else | |
5170 | error (_("Can't detach process.")); | |
5171 | } | |
5172 | ||
5173 | /* This detaches a program to which we previously attached, using | |
5174 | inferior_ptid to identify the process. After this is done, GDB | |
5175 | can be used to debug some other program. We better not have left | |
5176 | any breakpoints in the target program or it'll die when it hits | |
5177 | one. */ | |
c906108c SS |
5178 | |
5179 | static void | |
de0d863e | 5180 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 5181 | { |
82f73884 | 5182 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5183 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5184 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5185 | int is_fork_parent; | |
c906108c SS |
5186 | |
5187 | if (args) | |
8a3fe4f8 | 5188 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 5189 | |
2d717e4f DJ |
5190 | if (!target_has_execution) |
5191 | error (_("No process to detach from.")); | |
5192 | ||
0f48b757 | 5193 | target_announce_detach (from_tty); |
7cee1e54 | 5194 | |
c906108c | 5195 | /* Tell the remote target to detach. */ |
de0d863e | 5196 | remote_detach_pid (pid); |
82f73884 | 5197 | |
8020350c DB |
5198 | /* Exit only if this is the only active inferior. */ |
5199 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5200 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5201 | |
de0d863e DB |
5202 | /* Check to see if we are detaching a fork parent. Note that if we |
5203 | are detaching a fork child, tp == NULL. */ | |
5204 | is_fork_parent = (tp != NULL | |
5205 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5206 | ||
5207 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5208 | breakpoints that should be available for the followed inferior. */ | |
5209 | if (!is_fork_parent) | |
bc1e6c81 | 5210 | target_mourn_inferior (inferior_ptid); |
de0d863e DB |
5211 | else |
5212 | { | |
5213 | inferior_ptid = null_ptid; | |
5214 | detach_inferior (pid); | |
5215 | } | |
2d717e4f DJ |
5216 | } |
5217 | ||
5218 | static void | |
52554a0e | 5219 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5220 | { |
de0d863e | 5221 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
5222 | } |
5223 | ||
5224 | static void | |
52554a0e | 5225 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5226 | { |
de0d863e DB |
5227 | remote_detach_1 (args, from_tty); |
5228 | } | |
5229 | ||
5230 | /* Target follow-fork function for remote targets. On entry, and | |
5231 | at return, the current inferior is the fork parent. | |
5232 | ||
5233 | Note that although this is currently only used for extended-remote, | |
5234 | it is named remote_follow_fork in anticipation of using it for the | |
5235 | remote target as well. */ | |
5236 | ||
5237 | static int | |
5238 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5239 | int detach_fork) | |
5240 | { | |
5241 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5242 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5243 | |
c269dbdb DB |
5244 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5245 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5246 | { |
5247 | /* When following the parent and detaching the child, we detach | |
5248 | the child here. For the case of following the child and | |
5249 | detaching the parent, the detach is done in the target- | |
5250 | independent follow fork code in infrun.c. We can't use | |
5251 | target_detach when detaching an unfollowed child because | |
5252 | the client side doesn't know anything about the child. */ | |
5253 | if (detach_fork && !follow_child) | |
5254 | { | |
5255 | /* Detach the fork child. */ | |
5256 | ptid_t child_ptid; | |
5257 | pid_t child_pid; | |
5258 | ||
5259 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5260 | child_pid = ptid_get_pid (child_ptid); | |
5261 | ||
5262 | remote_detach_pid (child_pid); | |
5263 | detach_inferior (child_pid); | |
5264 | } | |
5265 | } | |
5266 | return 0; | |
c906108c SS |
5267 | } |
5268 | ||
94585166 DB |
5269 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5270 | in the program space of the new inferior. On entry and at return the | |
5271 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5272 | inferior, which may be the same as the exec'ing inferior unless | |
5273 | follow-exec-mode is "new". */ | |
5274 | ||
5275 | static void | |
5276 | remote_follow_exec (struct target_ops *ops, | |
5277 | struct inferior *inf, char *execd_pathname) | |
5278 | { | |
5279 | /* We know that this is a target file name, so if it has the "target:" | |
5280 | prefix we strip it off before saving it in the program space. */ | |
5281 | if (is_target_filename (execd_pathname)) | |
5282 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5283 | ||
5284 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5285 | } | |
5286 | ||
6ad8ae5c DJ |
5287 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5288 | ||
43ff13b4 | 5289 | static void |
fee354ee | 5290 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5291 | { |
43ff13b4 | 5292 | if (args) |
2d717e4f | 5293 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5294 | |
8020350c DB |
5295 | /* Make sure we unpush even the extended remote targets. Calling |
5296 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5297 | unpush if there is more than one inferior left. */ | |
5298 | unpush_target (target); | |
5299 | generic_mourn_inferior (); | |
2d717e4f | 5300 | |
43ff13b4 JM |
5301 | if (from_tty) |
5302 | puts_filtered ("Ending remote debugging.\n"); | |
5303 | } | |
5304 | ||
2d717e4f DJ |
5305 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5306 | be chatty about it. */ | |
5307 | ||
5308 | static void | |
20f796c9 GB |
5309 | extended_remote_attach (struct target_ops *target, const char *args, |
5310 | int from_tty) | |
2d717e4f DJ |
5311 | { |
5312 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5313 | int pid; |
96ef3384 | 5314 | char *wait_status = NULL; |
2d717e4f | 5315 | |
74164c56 | 5316 | pid = parse_pid_to_attach (args); |
2d717e4f | 5317 | |
74164c56 JK |
5318 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5319 | way as in other targets. */ | |
2d717e4f | 5320 | |
4082afcc | 5321 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5322 | error (_("This target does not support attaching to a process")); |
5323 | ||
7cee1e54 PA |
5324 | if (from_tty) |
5325 | { | |
5326 | char *exec_file = get_exec_file (0); | |
5327 | ||
5328 | if (exec_file) | |
5329 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5330 | target_pid_to_str (pid_to_ptid (pid))); | |
5331 | else | |
5332 | printf_unfiltered (_("Attaching to %s\n"), | |
5333 | target_pid_to_str (pid_to_ptid (pid))); | |
5334 | ||
5335 | gdb_flush (gdb_stdout); | |
5336 | } | |
5337 | ||
bba74b36 | 5338 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5339 | putpkt (rs->buf); |
5340 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5341 | ||
4082afcc PA |
5342 | switch (packet_ok (rs->buf, |
5343 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5344 | { |
4082afcc | 5345 | case PACKET_OK: |
6efcd9a8 | 5346 | if (!target_is_non_stop_p ()) |
74531fed PA |
5347 | { |
5348 | /* Save the reply for later. */ | |
224c3ddb | 5349 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5350 | strcpy (wait_status, rs->buf); |
5351 | } | |
5352 | else if (strcmp (rs->buf, "OK") != 0) | |
5353 | error (_("Attaching to %s failed with: %s"), | |
5354 | target_pid_to_str (pid_to_ptid (pid)), | |
5355 | rs->buf); | |
4082afcc PA |
5356 | break; |
5357 | case PACKET_UNKNOWN: | |
5358 | error (_("This target does not support attaching to a process")); | |
5359 | default: | |
5360 | error (_("Attaching to %s failed"), | |
5361 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5362 | } |
2d717e4f | 5363 | |
1b6e6f5c | 5364 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5365 | |
2d717e4f | 5366 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5367 | |
6efcd9a8 | 5368 | if (target_is_non_stop_p ()) |
bad34192 PA |
5369 | { |
5370 | struct thread_info *thread; | |
79d7f229 | 5371 | |
bad34192 | 5372 | /* Get list of threads. */ |
e8032dde | 5373 | remote_update_thread_list (target); |
82f73884 | 5374 | |
bad34192 PA |
5375 | thread = first_thread_of_process (pid); |
5376 | if (thread) | |
5377 | inferior_ptid = thread->ptid; | |
5378 | else | |
5379 | inferior_ptid = pid_to_ptid (pid); | |
5380 | ||
5381 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5382 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5383 | } |
74531fed | 5384 | else |
bad34192 PA |
5385 | { |
5386 | /* Now, if we have thread information, update inferior_ptid. */ | |
5387 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5388 | ||
5389 | /* Add the main thread to the thread list. */ | |
5390 | add_thread_silent (inferior_ptid); | |
5391 | } | |
c0a2216e | 5392 | |
96ef3384 UW |
5393 | /* Next, if the target can specify a description, read it. We do |
5394 | this before anything involving memory or registers. */ | |
5395 | target_find_description (); | |
5396 | ||
6efcd9a8 | 5397 | if (!target_is_non_stop_p ()) |
74531fed PA |
5398 | { |
5399 | /* Use the previously fetched status. */ | |
5400 | gdb_assert (wait_status != NULL); | |
5401 | ||
5402 | if (target_can_async_p ()) | |
5403 | { | |
722247f1 YQ |
5404 | struct notif_event *reply |
5405 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5406 | |
722247f1 | 5407 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5408 | |
6a3753b3 | 5409 | target_async (1); |
74531fed PA |
5410 | } |
5411 | else | |
5412 | { | |
5413 | gdb_assert (wait_status != NULL); | |
5414 | strcpy (rs->buf, wait_status); | |
5415 | rs->cached_wait_status = 1; | |
5416 | } | |
5417 | } | |
5418 | else | |
5419 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5420 | } |
5421 | ||
b9c1d481 AS |
5422 | /* Implementation of the to_post_attach method. */ |
5423 | ||
5424 | static void | |
5425 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5426 | { | |
6efcd9a8 PA |
5427 | /* Get text, data & bss offsets. */ |
5428 | get_offsets (); | |
5429 | ||
b9c1d481 AS |
5430 | /* In certain cases GDB might not have had the chance to start |
5431 | symbol lookup up until now. This could happen if the debugged | |
5432 | binary is not using shared libraries, the vsyscall page is not | |
5433 | present (on Linux) and the binary itself hadn't changed since the | |
5434 | debugging process was started. */ | |
5435 | if (symfile_objfile != NULL) | |
5436 | remote_check_symbols(); | |
5437 | } | |
5438 | ||
c906108c | 5439 | \f |
506fb367 DJ |
5440 | /* Check for the availability of vCont. This function should also check |
5441 | the response. */ | |
c906108c SS |
5442 | |
5443 | static void | |
6d820c5c | 5444 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5445 | { |
2e9f7625 | 5446 | char *buf; |
6d820c5c | 5447 | |
2e9f7625 DJ |
5448 | strcpy (rs->buf, "vCont?"); |
5449 | putpkt (rs->buf); | |
6d820c5c | 5450 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5451 | buf = rs->buf; |
c906108c | 5452 | |
506fb367 | 5453 | /* Make sure that the features we assume are supported. */ |
61012eef | 5454 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5455 | { |
5456 | char *p = &buf[5]; | |
750ce8d1 | 5457 | int support_c, support_C; |
506fb367 | 5458 | |
750ce8d1 YQ |
5459 | rs->supports_vCont.s = 0; |
5460 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5461 | support_c = 0; |
5462 | support_C = 0; | |
d458bd84 | 5463 | rs->supports_vCont.t = 0; |
c1e36e3e | 5464 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5465 | while (p && *p == ';') |
5466 | { | |
5467 | p++; | |
5468 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5469 | rs->supports_vCont.s = 1; |
506fb367 | 5470 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5471 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5472 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5473 | support_c = 1; | |
5474 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5475 | support_C = 1; | |
74531fed | 5476 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5477 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5478 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5479 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5480 | |
5481 | p = strchr (p, ';'); | |
5482 | } | |
c906108c | 5483 | |
750ce8d1 YQ |
5484 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5485 | BUF will make packet_ok disable the packet. */ | |
5486 | if (!support_c || !support_C) | |
506fb367 DJ |
5487 | buf[0] = 0; |
5488 | } | |
c906108c | 5489 | |
444abaca | 5490 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5491 | } |
c906108c | 5492 | |
0d8f58ca PA |
5493 | /* Helper function for building "vCont" resumptions. Write a |
5494 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5495 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5496 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5497 | resumed thread should be single-stepped and/or signalled. If PTID | |
5498 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5499 | represents a process, then all threads of the process are resumed; | |
5500 | the thread to be stepped and/or signalled is given in the global | |
5501 | INFERIOR_PTID. */ | |
5502 | ||
5503 | static char * | |
5504 | append_resumption (char *p, char *endp, | |
2ea28649 | 5505 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5506 | { |
5507 | struct remote_state *rs = get_remote_state (); | |
5508 | ||
a493e3e2 | 5509 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5510 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5511 | else if (step |
5512 | /* GDB is willing to range step. */ | |
5513 | && use_range_stepping | |
5514 | /* Target supports range stepping. */ | |
5515 | && rs->supports_vCont.r | |
5516 | /* We don't currently support range stepping multiple | |
5517 | threads with a wildcard (though the protocol allows it, | |
5518 | so stubs shouldn't make an active effort to forbid | |
5519 | it). */ | |
5520 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5521 | { | |
5522 | struct thread_info *tp; | |
5523 | ||
5524 | if (ptid_equal (ptid, minus_one_ptid)) | |
5525 | { | |
5526 | /* If we don't know about the target thread's tid, then | |
5527 | we're resuming magic_null_ptid (see caller). */ | |
5528 | tp = find_thread_ptid (magic_null_ptid); | |
5529 | } | |
5530 | else | |
5531 | tp = find_thread_ptid (ptid); | |
5532 | gdb_assert (tp != NULL); | |
5533 | ||
5534 | if (tp->control.may_range_step) | |
5535 | { | |
5536 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5537 | ||
5538 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5539 | phex_nz (tp->control.step_range_start, | |
5540 | addr_size), | |
5541 | phex_nz (tp->control.step_range_end, | |
5542 | addr_size)); | |
5543 | } | |
5544 | else | |
5545 | p += xsnprintf (p, endp - p, ";s"); | |
5546 | } | |
0d8f58ca PA |
5547 | else if (step) |
5548 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5549 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5550 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5551 | else | |
5552 | p += xsnprintf (p, endp - p, ";c"); | |
5553 | ||
5554 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5555 | { | |
5556 | ptid_t nptid; | |
5557 | ||
5558 | /* All (-1) threads of process. */ | |
ba348170 | 5559 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5560 | |
5561 | p += xsnprintf (p, endp - p, ":"); | |
5562 | p = write_ptid (p, endp, nptid); | |
5563 | } | |
5564 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5565 | { | |
5566 | p += xsnprintf (p, endp - p, ":"); | |
5567 | p = write_ptid (p, endp, ptid); | |
5568 | } | |
5569 | ||
5570 | return p; | |
5571 | } | |
5572 | ||
799a2abe PA |
5573 | /* Clear the thread's private info on resume. */ |
5574 | ||
5575 | static void | |
5576 | resume_clear_thread_private_info (struct thread_info *thread) | |
5577 | { | |
5578 | if (thread->priv != NULL) | |
5579 | { | |
5580 | thread->priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5581 | thread->priv->watch_data_address = 0; | |
5582 | } | |
5583 | } | |
5584 | ||
e5ef252a PA |
5585 | /* Append a vCont continue-with-signal action for threads that have a |
5586 | non-zero stop signal. */ | |
5587 | ||
5588 | static char * | |
5589 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5590 | { | |
5591 | struct thread_info *thread; | |
5592 | ||
034f788c | 5593 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5594 | if (ptid_match (thread->ptid, ptid) |
5595 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5596 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5597 | { |
5598 | p = append_resumption (p, endp, thread->ptid, | |
5599 | 0, thread->suspend.stop_signal); | |
5600 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5601 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5602 | } |
5603 | ||
5604 | return p; | |
5605 | } | |
5606 | ||
7b68ffbb PA |
5607 | /* Set the target running, using the packets that use Hc |
5608 | (c/s/C/S). */ | |
5609 | ||
5610 | static void | |
5611 | remote_resume_with_hc (struct target_ops *ops, | |
5612 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5613 | { | |
5614 | struct remote_state *rs = get_remote_state (); | |
5615 | struct thread_info *thread; | |
5616 | char *buf; | |
5617 | ||
5618 | rs->last_sent_signal = siggnal; | |
5619 | rs->last_sent_step = step; | |
5620 | ||
5621 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5622 | thread. */ | |
5623 | if (ptid_equal (ptid, minus_one_ptid)) | |
5624 | set_continue_thread (any_thread_ptid); | |
5625 | else | |
5626 | set_continue_thread (ptid); | |
5627 | ||
5628 | ALL_NON_EXITED_THREADS (thread) | |
5629 | resume_clear_thread_private_info (thread); | |
5630 | ||
5631 | buf = rs->buf; | |
5632 | if (execution_direction == EXEC_REVERSE) | |
5633 | { | |
5634 | /* We don't pass signals to the target in reverse exec mode. */ | |
5635 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5636 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5637 | siggnal); | |
5638 | ||
5639 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5640 | error (_("Remote reverse-step not supported.")); | |
5641 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5642 | error (_("Remote reverse-continue not supported.")); | |
5643 | ||
5644 | strcpy (buf, step ? "bs" : "bc"); | |
5645 | } | |
5646 | else if (siggnal != GDB_SIGNAL_0) | |
5647 | { | |
5648 | buf[0] = step ? 'S' : 'C'; | |
5649 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5650 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5651 | buf[3] = '\0'; | |
5652 | } | |
5653 | else | |
5654 | strcpy (buf, step ? "s" : "c"); | |
5655 | ||
5656 | putpkt (buf); | |
5657 | } | |
5658 | ||
506fb367 DJ |
5659 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5660 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5661 | resumed thread should be single-stepped and/or signalled. If PTID |
5662 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5663 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5664 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5665 | |
7b68ffbb PA |
5666 | This function issues a strict subset of all possible vCont commands |
5667 | at the moment. */ | |
44eaed12 | 5668 | |
506fb367 | 5669 | static int |
7b68ffbb | 5670 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5671 | { |
5672 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5673 | char *p; |
5674 | char *endp; | |
44eaed12 | 5675 | |
7b68ffbb PA |
5676 | /* No reverse execution actions defined for vCont. */ |
5677 | if (execution_direction == EXEC_REVERSE) | |
5678 | return 0; | |
5679 | ||
4082afcc | 5680 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5681 | remote_vcont_probe (rs); |
44eaed12 | 5682 | |
4082afcc | 5683 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5684 | return 0; |
44eaed12 | 5685 | |
82f73884 PA |
5686 | p = rs->buf; |
5687 | endp = rs->buf + get_remote_packet_size (); | |
5688 | ||
506fb367 DJ |
5689 | /* If we could generate a wider range of packets, we'd have to worry |
5690 | about overflowing BUF. Should there be a generic | |
5691 | "multi-part-packet" packet? */ | |
5692 | ||
0d8f58ca PA |
5693 | p += xsnprintf (p, endp - p, "vCont"); |
5694 | ||
79d7f229 | 5695 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5696 | { |
79d7f229 PA |
5697 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5698 | so we don't have any TID numbers the inferior will | |
5699 | understand. Make sure to only send forms that do not specify | |
5700 | a TID. */ | |
a9cbf802 | 5701 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5702 | } |
0d8f58ca | 5703 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5704 | { |
0d8f58ca PA |
5705 | /* Resume all threads (of all processes, or of a single |
5706 | process), with preference for INFERIOR_PTID. This assumes | |
5707 | inferior_ptid belongs to the set of all threads we are about | |
5708 | to resume. */ | |
a493e3e2 | 5709 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5710 | { |
0d8f58ca PA |
5711 | /* Step inferior_ptid, with or without signal. */ |
5712 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5713 | } |
0d8f58ca | 5714 | |
e5ef252a PA |
5715 | /* Also pass down any pending signaled resumption for other |
5716 | threads not the current. */ | |
5717 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5718 | ||
0d8f58ca | 5719 | /* And continue others without a signal. */ |
a493e3e2 | 5720 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5721 | } |
5722 | else | |
506fb367 DJ |
5723 | { |
5724 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5725 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5726 | } |
c906108c | 5727 | |
82f73884 PA |
5728 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5729 | putpkt (rs->buf); | |
506fb367 | 5730 | |
6efcd9a8 | 5731 | if (target_is_non_stop_p ()) |
74531fed PA |
5732 | { |
5733 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5734 | reply will be reported asynchronously by means of a `%Stop' | |
5735 | notification. */ | |
5736 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5737 | if (strcmp (rs->buf, "OK") != 0) | |
5738 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5739 | } | |
5740 | ||
506fb367 | 5741 | return 1; |
c906108c | 5742 | } |
43ff13b4 | 5743 | |
506fb367 DJ |
5744 | /* Tell the remote machine to resume. */ |
5745 | ||
43ff13b4 | 5746 | static void |
28439f5e | 5747 | remote_resume (struct target_ops *ops, |
2ea28649 | 5748 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5749 | { |
d01949b6 | 5750 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 5751 | |
85ad3aaf PA |
5752 | /* When connected in non-stop mode, the core resumes threads |
5753 | individually. Resuming remote threads directly in target_resume | |
5754 | would thus result in sending one packet per thread. Instead, to | |
5755 | minimize roundtrip latency, here we just store the resume | |
5756 | request; the actual remote resumption will be done in | |
5757 | target_commit_resume / remote_commit_resume, where we'll be able | |
5758 | to do vCont action coalescing. */ | |
5759 | if (target_is_non_stop_p () && execution_direction != EXEC_REVERSE) | |
5760 | { | |
5761 | struct private_thread_info *remote_thr; | |
5762 | ||
5763 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
5764 | remote_thr = get_private_info_ptid (inferior_ptid); | |
5765 | else | |
5766 | remote_thr = get_private_info_ptid (ptid); | |
5767 | remote_thr->last_resume_step = step; | |
5768 | remote_thr->last_resume_sig = siggnal; | |
5769 | return; | |
5770 | } | |
5771 | ||
722247f1 YQ |
5772 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5773 | (explained in remote-notif.c:handle_notification) so | |
5774 | remote_notif_process is not called. We need find a place where | |
5775 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5776 | before resuming inferior, because inferior was stopped and no RSP | |
5777 | traffic at that moment. */ | |
6efcd9a8 | 5778 | if (!target_is_non_stop_p ()) |
5965e028 | 5779 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5780 | |
3a00c802 PA |
5781 | rs->last_resume_exec_dir = execution_direction; |
5782 | ||
7b68ffbb PA |
5783 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
5784 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
5785 | remote_resume_with_hc (ops, ptid, step, siggnal); | |
43ff13b4 | 5786 | |
2acceee2 | 5787 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5788 | with the event loop. NOTE: this is the one place where all the |
5789 | execution commands end up. We could alternatively do this in each | |
23860348 | 5790 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5791 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5792 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5793 | NOT asynchronously. */ |
362646f5 | 5794 | if (target_can_async_p ()) |
6a3753b3 | 5795 | target_async (1); |
e24a49d8 PA |
5796 | |
5797 | /* We've just told the target to resume. The remote server will | |
5798 | wait for the inferior to stop, and then send a stop reply. In | |
5799 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5800 | because the stub wouldn't be ready to process it. This applies |
5801 | only to the base all-stop protocol, however. In non-stop (which | |
5802 | only supports vCont), the stub replies with an "OK", and is | |
5803 | immediate able to process further serial input. */ | |
6efcd9a8 | 5804 | if (!target_is_non_stop_p ()) |
74531fed | 5805 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5806 | } |
85ad3aaf PA |
5807 | |
5808 | static void check_pending_events_prevent_wildcard_vcont | |
5809 | (int *may_global_wildcard_vcont); | |
5810 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
5811 | ||
5812 | /* Private per-inferior info for target remote processes. */ | |
5813 | ||
5814 | struct private_inferior | |
5815 | { | |
5816 | /* Whether we can send a wildcard vCont for this process. */ | |
5817 | int may_wildcard_vcont; | |
5818 | }; | |
5819 | ||
5820 | /* Structure used to track the construction of a vCont packet in the | |
5821 | outgoing packet buffer. This is used to send multiple vCont | |
5822 | packets if we have more actions than would fit a single packet. */ | |
5823 | ||
5824 | struct vcont_builder | |
5825 | { | |
5826 | /* Pointer to the first action. P points here if no action has been | |
5827 | appended yet. */ | |
5828 | char *first_action; | |
5829 | ||
5830 | /* Where the next action will be appended. */ | |
5831 | char *p; | |
5832 | ||
5833 | /* The end of the buffer. Must never write past this. */ | |
5834 | char *endp; | |
5835 | }; | |
5836 | ||
5837 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
5838 | ||
5839 | static void | |
5840 | vcont_builder_restart (struct vcont_builder *builder) | |
5841 | { | |
5842 | struct remote_state *rs = get_remote_state (); | |
5843 | ||
5844 | builder->p = rs->buf; | |
5845 | builder->endp = rs->buf + get_remote_packet_size (); | |
5846 | builder->p += xsnprintf (builder->p, builder->endp - builder->p, "vCont"); | |
5847 | builder->first_action = builder->p; | |
5848 | } | |
5849 | ||
5850 | /* If the vCont packet being built has any action, send it to the | |
5851 | remote end. */ | |
5852 | ||
5853 | static void | |
5854 | vcont_builder_flush (struct vcont_builder *builder) | |
5855 | { | |
5856 | struct remote_state *rs; | |
5857 | ||
5858 | if (builder->p == builder->first_action) | |
5859 | return; | |
5860 | ||
5861 | rs = get_remote_state (); | |
5862 | putpkt (rs->buf); | |
5863 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5864 | if (strcmp (rs->buf, "OK") != 0) | |
5865 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5866 | } | |
5867 | ||
5868 | /* The largest action is range-stepping, with its two addresses. This | |
5869 | is more than sufficient. If a new, bigger action is created, it'll | |
5870 | quickly trigger a failed assertion in append_resumption (and we'll | |
5871 | just bump this). */ | |
5872 | #define MAX_ACTION_SIZE 200 | |
5873 | ||
5874 | /* Append a new vCont action in the outgoing packet being built. If | |
5875 | the action doesn't fit the packet along with previous actions, push | |
5876 | what we've got so far to the remote end and start over a new vCont | |
5877 | packet (with the new action). */ | |
5878 | ||
5879 | static void | |
5880 | vcont_builder_push_action (struct vcont_builder *builder, | |
5881 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5882 | { | |
5883 | char buf[MAX_ACTION_SIZE + 1]; | |
5884 | char *endp; | |
5885 | size_t rsize; | |
5886 | ||
5887 | endp = append_resumption (buf, buf + sizeof (buf), | |
5888 | ptid, step, siggnal); | |
5889 | ||
5890 | /* Check whether this new action would fit in the vCont packet along | |
5891 | with previous actions. If not, send what we've got so far and | |
5892 | start a new vCont packet. */ | |
5893 | rsize = endp - buf; | |
5894 | if (rsize > builder->endp - builder->p) | |
5895 | { | |
5896 | vcont_builder_flush (builder); | |
5897 | vcont_builder_restart (builder); | |
5898 | ||
5899 | /* Should now fit. */ | |
5900 | gdb_assert (rsize <= builder->endp - builder->p); | |
5901 | } | |
5902 | ||
5903 | memcpy (builder->p, buf, rsize); | |
5904 | builder->p += rsize; | |
5905 | *builder->p = '\0'; | |
5906 | } | |
5907 | ||
5908 | /* to_commit_resume implementation. */ | |
5909 | ||
5910 | static void | |
5911 | remote_commit_resume (struct target_ops *ops) | |
5912 | { | |
5913 | struct remote_state *rs = get_remote_state (); | |
5914 | struct inferior *inf; | |
5915 | struct thread_info *tp; | |
5916 | int any_process_wildcard; | |
5917 | int may_global_wildcard_vcont; | |
5918 | struct vcont_builder vcont_builder; | |
5919 | ||
5920 | /* If connected in all-stop mode, we'd send the remote resume | |
5921 | request directly from remote_resume. Likewise if | |
5922 | reverse-debugging, as there are no defined vCont actions for | |
5923 | reverse execution. */ | |
5924 | if (!target_is_non_stop_p () || execution_direction == EXEC_REVERSE) | |
5925 | return; | |
5926 | ||
5927 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
5928 | instead of resuming all threads of each process individually. | |
5929 | However, if any thread of a process must remain halted, we can't | |
5930 | send wildcard resumes and must send one action per thread. | |
5931 | ||
5932 | Care must be taken to not resume threads/processes the server | |
5933 | side already told us are stopped, but the core doesn't know about | |
5934 | yet, because the events are still in the vStopped notification | |
5935 | queue. For example: | |
5936 | ||
5937 | #1 => vCont s:p1.1;c | |
5938 | #2 <= OK | |
5939 | #3 <= %Stopped T05 p1.1 | |
5940 | #4 => vStopped | |
5941 | #5 <= T05 p1.2 | |
5942 | #6 => vStopped | |
5943 | #7 <= OK | |
5944 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
5945 | #9 => vCont s:p1.1;c | |
5946 | ||
5947 | The last vCont above would resume thread p1.2 by mistake, because | |
5948 | the server has no idea that the event for p1.2 had not been | |
5949 | handled yet. | |
5950 | ||
5951 | The server side must similarly ignore resume actions for the | |
5952 | thread that has a pending %Stopped notification (and any other | |
5953 | threads with events pending), until GDB acks the notification | |
5954 | with vStopped. Otherwise, e.g., the following case is | |
5955 | mishandled: | |
5956 | ||
5957 | #1 => g (or any other packet) | |
5958 | #2 <= [registers] | |
5959 | #3 <= %Stopped T05 p1.2 | |
5960 | #4 => vCont s:p1.1;c | |
5961 | #5 <= OK | |
5962 | ||
5963 | Above, the server must not resume thread p1.2. GDB can't know | |
5964 | that p1.2 stopped until it acks the %Stopped notification, and | |
5965 | since from GDB's perspective all threads should be running, it | |
5966 | sends a "c" action. | |
5967 | ||
5968 | Finally, special care must also be given to handling fork/vfork | |
5969 | events. A (v)fork event actually tells us that two processes | |
5970 | stopped -- the parent and the child. Until we follow the fork, | |
5971 | we must not resume the child. Therefore, if we have a pending | |
5972 | fork follow, we must not send a global wildcard resume action | |
5973 | (vCont;c). We can still send process-wide wildcards though. */ | |
5974 | ||
5975 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
5976 | may_global_wildcard_vcont = 1; | |
5977 | ||
5978 | /* And assume every process is individually wildcard-able too. */ | |
5979 | ALL_NON_EXITED_INFERIORS (inf) | |
5980 | { | |
5981 | if (inf->priv == NULL) | |
5982 | inf->priv = XNEW (struct private_inferior); | |
5983 | inf->priv->may_wildcard_vcont = 1; | |
5984 | } | |
5985 | ||
5986 | /* Check for any pending events (not reported or processed yet) and | |
5987 | disable process and global wildcard resumes appropriately. */ | |
5988 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
5989 | ||
5990 | ALL_NON_EXITED_THREADS (tp) | |
5991 | { | |
5992 | /* If a thread of a process is not meant to be resumed, then we | |
5993 | can't wildcard that process. */ | |
5994 | if (!tp->executing) | |
5995 | { | |
5996 | tp->inf->priv->may_wildcard_vcont = 0; | |
5997 | ||
5998 | /* And if we can't wildcard a process, we can't wildcard | |
5999 | everything either. */ | |
6000 | may_global_wildcard_vcont = 0; | |
6001 | continue; | |
6002 | } | |
6003 | ||
6004 | /* If a thread is the parent of an unfollowed fork, then we | |
6005 | can't do a global wildcard, as that would resume the fork | |
6006 | child. */ | |
6007 | if (is_pending_fork_parent_thread (tp)) | |
6008 | may_global_wildcard_vcont = 0; | |
6009 | } | |
6010 | ||
6011 | /* Now let's build the vCont packet(s). Actions must be appended | |
6012 | from narrower to wider scopes (thread -> process -> global). If | |
6013 | we end up with too many actions for a single packet vcont_builder | |
6014 | flushes the current vCont packet to the remote side and starts a | |
6015 | new one. */ | |
6016 | vcont_builder_restart (&vcont_builder); | |
6017 | ||
6018 | /* Threads first. */ | |
6019 | ALL_NON_EXITED_THREADS (tp) | |
6020 | { | |
6021 | struct private_thread_info *remote_thr = tp->priv; | |
6022 | ||
6023 | if (!tp->executing || remote_thr->vcont_resumed) | |
6024 | continue; | |
6025 | ||
6026 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6027 | ||
6028 | if (!remote_thr->last_resume_step | |
6029 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
6030 | && tp->inf->priv->may_wildcard_vcont) | |
6031 | { | |
6032 | /* We'll send a wildcard resume instead. */ | |
6033 | remote_thr->vcont_resumed = 1; | |
6034 | continue; | |
6035 | } | |
6036 | ||
6037 | vcont_builder_push_action (&vcont_builder, tp->ptid, | |
6038 | remote_thr->last_resume_step, | |
6039 | remote_thr->last_resume_sig); | |
6040 | remote_thr->vcont_resumed = 1; | |
6041 | } | |
6042 | ||
6043 | /* Now check whether we can send any process-wide wildcard. This is | |
6044 | to avoid sending a global wildcard in the case nothing is | |
6045 | supposed to be resumed. */ | |
6046 | any_process_wildcard = 0; | |
6047 | ||
6048 | ALL_NON_EXITED_INFERIORS (inf) | |
6049 | { | |
6050 | if (inf->priv->may_wildcard_vcont) | |
6051 | { | |
6052 | any_process_wildcard = 1; | |
6053 | break; | |
6054 | } | |
6055 | } | |
6056 | ||
6057 | if (any_process_wildcard) | |
6058 | { | |
6059 | /* If all processes are wildcard-able, then send a single "c" | |
6060 | action, otherwise, send an "all (-1) threads of process" | |
6061 | continue action for each running process, if any. */ | |
6062 | if (may_global_wildcard_vcont) | |
6063 | { | |
6064 | vcont_builder_push_action (&vcont_builder, minus_one_ptid, | |
6065 | 0, GDB_SIGNAL_0); | |
6066 | } | |
6067 | else | |
6068 | { | |
6069 | ALL_NON_EXITED_INFERIORS (inf) | |
6070 | { | |
6071 | if (inf->priv->may_wildcard_vcont) | |
6072 | { | |
6073 | vcont_builder_push_action (&vcont_builder, | |
6074 | pid_to_ptid (inf->pid), | |
6075 | 0, GDB_SIGNAL_0); | |
6076 | } | |
6077 | } | |
6078 | } | |
6079 | } | |
6080 | ||
6081 | vcont_builder_flush (&vcont_builder); | |
6082 | } | |
6083 | ||
c906108c | 6084 | \f |
43ff13b4 | 6085 | |
74531fed PA |
6086 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6087 | thread, all threads of a remote process, or all threads of all | |
6088 | processes. */ | |
6089 | ||
6090 | static void | |
6091 | remote_stop_ns (ptid_t ptid) | |
6092 | { | |
6093 | struct remote_state *rs = get_remote_state (); | |
6094 | char *p = rs->buf; | |
6095 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6096 | |
4082afcc | 6097 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6098 | remote_vcont_probe (rs); |
6099 | ||
d458bd84 | 6100 | if (!rs->supports_vCont.t) |
74531fed PA |
6101 | error (_("Remote server does not support stopping threads")); |
6102 | ||
f91d3df5 PA |
6103 | if (ptid_equal (ptid, minus_one_ptid) |
6104 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6105 | p += xsnprintf (p, endp - p, "vCont;t"); |
6106 | else | |
6107 | { | |
6108 | ptid_t nptid; | |
6109 | ||
74531fed PA |
6110 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6111 | ||
6112 | if (ptid_is_pid (ptid)) | |
6113 | /* All (-1) threads of process. */ | |
ba348170 | 6114 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6115 | else |
6116 | { | |
6117 | /* Small optimization: if we already have a stop reply for | |
6118 | this thread, no use in telling the stub we want this | |
6119 | stopped. */ | |
6120 | if (peek_stop_reply (ptid)) | |
6121 | return; | |
6122 | ||
6123 | nptid = ptid; | |
6124 | } | |
6125 | ||
a9cbf802 | 6126 | write_ptid (p, endp, nptid); |
74531fed PA |
6127 | } |
6128 | ||
6129 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6130 | come in asynchronously by notification. */ | |
6131 | putpkt (rs->buf); | |
6132 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6133 | if (strcmp (rs->buf, "OK") != 0) | |
6134 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6135 | } | |
6136 | ||
bfedc46a PA |
6137 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6138 | interrupt the remote target. It is undefined which thread of which | |
6139 | process reports the interrupt. */ | |
74531fed PA |
6140 | |
6141 | static void | |
de979965 | 6142 | remote_interrupt_as (void) |
74531fed PA |
6143 | { |
6144 | struct remote_state *rs = get_remote_state (); | |
6145 | ||
3a29589a DJ |
6146 | rs->ctrlc_pending_p = 1; |
6147 | ||
74531fed PA |
6148 | /* If the inferior is stopped already, but the core didn't know |
6149 | about it yet, just ignore the request. The cached wait status | |
6150 | will be collected in remote_wait. */ | |
6151 | if (rs->cached_wait_status) | |
6152 | return; | |
6153 | ||
9a7071a8 JB |
6154 | /* Send interrupt_sequence to remote target. */ |
6155 | send_interrupt_sequence (); | |
74531fed PA |
6156 | } |
6157 | ||
de979965 PA |
6158 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6159 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6160 | reports the interrupt. Throws an error if the packet is not |
6161 | supported by the server. */ | |
de979965 | 6162 | |
e42de8c7 | 6163 | static void |
de979965 PA |
6164 | remote_interrupt_ns (void) |
6165 | { | |
6166 | struct remote_state *rs = get_remote_state (); | |
6167 | char *p = rs->buf; | |
6168 | char *endp = rs->buf + get_remote_packet_size (); | |
6169 | ||
6170 | xsnprintf (p, endp - p, "vCtrlC"); | |
6171 | ||
6172 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6173 | come in asynchronously by notification. */ | |
6174 | putpkt (rs->buf); | |
6175 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6176 | ||
6177 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6178 | { | |
6179 | case PACKET_OK: | |
6180 | break; | |
6181 | case PACKET_UNKNOWN: | |
e42de8c7 | 6182 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6183 | case PACKET_ERROR: |
6184 | error (_("Interrupting target failed: %s"), rs->buf); | |
6185 | } | |
de979965 PA |
6186 | } |
6187 | ||
bfedc46a | 6188 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6189 | |
c906108c | 6190 | static void |
1eab8a48 | 6191 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 6192 | { |
7a292a7a | 6193 | if (remote_debug) |
0f71a2f6 | 6194 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6195 | |
6efcd9a8 | 6196 | if (target_is_non_stop_p ()) |
74531fed | 6197 | remote_stop_ns (ptid); |
c906108c | 6198 | else |
bfedc46a PA |
6199 | { |
6200 | /* We don't currently have a way to transparently pause the | |
6201 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6202 | remote_interrupt_as (); |
bfedc46a PA |
6203 | } |
6204 | } | |
6205 | ||
6206 | /* Implement the to_interrupt function for the remote targets. */ | |
6207 | ||
6208 | static void | |
6209 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
6210 | { | |
e42de8c7 PA |
6211 | struct remote_state *rs = get_remote_state (); |
6212 | ||
bfedc46a PA |
6213 | if (remote_debug) |
6214 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6215 | ||
e42de8c7 PA |
6216 | if (target_is_non_stop_p ()) |
6217 | remote_interrupt_ns (); | |
bfedc46a | 6218 | else |
e42de8c7 | 6219 | remote_interrupt_as (); |
c906108c SS |
6220 | } |
6221 | ||
93692b58 PA |
6222 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6223 | ||
6224 | static void | |
6225 | remote_pass_ctrlc (struct target_ops *self) | |
6226 | { | |
6227 | struct remote_state *rs = get_remote_state (); | |
6228 | ||
6229 | if (remote_debug) | |
6230 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6231 | ||
6232 | /* If we're starting up, we're not fully synced yet. Quit | |
6233 | immediately. */ | |
6234 | if (rs->starting_up) | |
6235 | quit (); | |
6236 | /* If ^C has already been sent once, offer to disconnect. */ | |
6237 | else if (rs->ctrlc_pending_p) | |
6238 | interrupt_query (); | |
6239 | else | |
6240 | target_interrupt (inferior_ptid); | |
6241 | } | |
6242 | ||
c906108c SS |
6243 | /* Ask the user what to do when an interrupt is received. */ |
6244 | ||
6245 | static void | |
fba45db2 | 6246 | interrupt_query (void) |
c906108c | 6247 | { |
abc56d60 | 6248 | struct remote_state *rs = get_remote_state (); |
c906108c | 6249 | |
abc56d60 | 6250 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6251 | { |
abc56d60 PA |
6252 | if (query (_("The target is not responding to interrupt requests.\n" |
6253 | "Stop debugging it? "))) | |
74531fed | 6254 | { |
78a095c3 | 6255 | remote_unpush_target (); |
abc56d60 | 6256 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6257 | } |
6258 | } | |
abc56d60 PA |
6259 | else |
6260 | { | |
6261 | if (query (_("Interrupted while waiting for the program.\n" | |
6262 | "Give up waiting? "))) | |
6263 | quit (); | |
6264 | } | |
c906108c SS |
6265 | } |
6266 | ||
6426a772 JM |
6267 | /* Enable/disable target terminal ownership. Most targets can use |
6268 | terminal groups to control terminal ownership. Remote targets are | |
6269 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6270 | is required. */ |
6426a772 JM |
6271 | |
6272 | static void | |
d2f640d4 | 6273 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 6274 | { |
d9d2d8b6 PA |
6275 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
6276 | idempotent. The event-loop GDB talking to an asynchronous target | |
6277 | with a synchronous command calls this function from both | |
6278 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
6279 | transfer the terminal to the target when it shouldn't this guard | |
6280 | can go away. */ | |
6426a772 JM |
6281 | if (!remote_async_terminal_ours_p) |
6282 | return; | |
6426a772 | 6283 | remote_async_terminal_ours_p = 0; |
6426a772 JM |
6284 | /* NOTE: At this point we could also register our selves as the |
6285 | recipient of all input. Any characters typed could then be | |
23860348 | 6286 | passed on down to the target. */ |
6426a772 JM |
6287 | } |
6288 | ||
6289 | static void | |
e3594fd1 | 6290 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 6291 | { |
75c99385 | 6292 | /* See FIXME in remote_terminal_inferior. */ |
6426a772 JM |
6293 | if (remote_async_terminal_ours_p) |
6294 | return; | |
6426a772 JM |
6295 | remote_async_terminal_ours_p = 1; |
6296 | } | |
6297 | ||
176a6961 | 6298 | static void |
917317f4 | 6299 | remote_console_output (char *msg) |
c906108c SS |
6300 | { |
6301 | char *p; | |
6302 | ||
c5aa993b | 6303 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6304 | { |
6305 | char tb[2]; | |
6306 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6307 | |
c906108c SS |
6308 | tb[0] = c; |
6309 | tb[1] = 0; | |
43ff13b4 | 6310 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6311 | } |
00db5b94 PA |
6312 | gdb_flush (gdb_stdtarg); |
6313 | } | |
74531fed | 6314 | |
74531fed PA |
6315 | DEF_VEC_O(cached_reg_t); |
6316 | ||
722247f1 | 6317 | typedef struct stop_reply |
74531fed | 6318 | { |
722247f1 | 6319 | struct notif_event base; |
74531fed | 6320 | |
722247f1 | 6321 | /* The identifier of the thread about this event */ |
74531fed PA |
6322 | ptid_t ptid; |
6323 | ||
340e3c99 | 6324 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6325 | connection, represented by a remote_state object, is closed, |
6326 | all the associated stop_reply events should be released. */ | |
6327 | struct remote_state *rs; | |
6328 | ||
74531fed PA |
6329 | struct target_waitstatus ws; |
6330 | ||
15148d6a PA |
6331 | /* Expedited registers. This makes remote debugging a bit more |
6332 | efficient for those targets that provide critical registers as | |
6333 | part of their normal status mechanism (as another roundtrip to | |
6334 | fetch them is avoided). */ | |
74531fed PA |
6335 | VEC(cached_reg_t) *regcache; |
6336 | ||
f7e6eed5 PA |
6337 | enum target_stop_reason stop_reason; |
6338 | ||
74531fed PA |
6339 | CORE_ADDR watch_data_address; |
6340 | ||
dc146f7c | 6341 | int core; |
722247f1 | 6342 | } *stop_reply_p; |
a744cf53 | 6343 | |
722247f1 YQ |
6344 | DECLARE_QUEUE_P (stop_reply_p); |
6345 | DEFINE_QUEUE_P (stop_reply_p); | |
6346 | /* The list of already fetched and acknowledged stop events. This | |
6347 | queue is used for notification Stop, and other notifications | |
6348 | don't need queue for their events, because the notification events | |
6349 | of Stop can't be consumed immediately, so that events should be | |
6350 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6351 | time. Other notifications can consume their events immediately, | |
6352 | so queue is not needed for them. */ | |
6353 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6354 | |
6355 | static void | |
6356 | stop_reply_xfree (struct stop_reply *r) | |
6357 | { | |
f48ff2a7 | 6358 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6359 | } |
6360 | ||
221e1a37 PA |
6361 | /* Return the length of the stop reply queue. */ |
6362 | ||
6363 | static int | |
6364 | stop_reply_queue_length (void) | |
6365 | { | |
6366 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6367 | } | |
6368 | ||
722247f1 YQ |
6369 | static void |
6370 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6371 | struct notif_event *event) | |
6372 | { | |
6373 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6374 | } | |
6375 | ||
6376 | static void | |
6377 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6378 | struct notif_event *event) | |
6379 | { | |
6380 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6381 | ||
6382 | /* acknowledge */ | |
f5c4fcd9 | 6383 | putpkt (self->ack_command); |
722247f1 YQ |
6384 | |
6385 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6386 | /* We got an unknown stop reply. */ | |
6387 | error (_("Unknown stop reply")); | |
6388 | ||
6389 | push_stop_reply (stop_reply); | |
6390 | } | |
6391 | ||
6392 | static int | |
6393 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6394 | { | |
6395 | /* We can't get pending events in remote_notif_process for | |
6396 | notification stop, and we have to do this in remote_wait_ns | |
6397 | instead. If we fetch all queued events from stub, remote stub | |
6398 | may exit and we have no chance to process them back in | |
6399 | remote_wait_ns. */ | |
6400 | mark_async_event_handler (remote_async_inferior_event_token); | |
6401 | return 0; | |
6402 | } | |
6403 | ||
6404 | static void | |
6405 | stop_reply_dtr (struct notif_event *event) | |
6406 | { | |
6407 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6408 | cached_reg_t *reg; |
6409 | int ix; | |
6410 | ||
6411 | for (ix = 0; | |
6412 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6413 | ix++) | |
6414 | xfree (reg->data); | |
722247f1 YQ |
6415 | |
6416 | VEC_free (cached_reg_t, r->regcache); | |
6417 | } | |
6418 | ||
6419 | static struct notif_event * | |
6420 | remote_notif_stop_alloc_reply (void) | |
6421 | { | |
8d749320 SM |
6422 | /* We cast to a pointer to the "base class". */ |
6423 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6424 | |
6425 | r->dtr = stop_reply_dtr; | |
6426 | ||
6427 | return r; | |
6428 | } | |
6429 | ||
6430 | /* A client of notification Stop. */ | |
6431 | ||
6432 | struct notif_client notif_client_stop = | |
6433 | { | |
6434 | "Stop", | |
6435 | "vStopped", | |
6436 | remote_notif_stop_parse, | |
6437 | remote_notif_stop_ack, | |
6438 | remote_notif_stop_can_get_pending_events, | |
6439 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6440 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6441 | }; |
6442 | ||
6443 | /* A parameter to pass data in and out. */ | |
6444 | ||
6445 | struct queue_iter_param | |
6446 | { | |
6447 | void *input; | |
6448 | struct stop_reply *output; | |
6449 | }; | |
6450 | ||
85ad3aaf | 6451 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6452 | the pid of the process that owns the threads we want to check, or |
6453 | -1 if we want to check all threads. */ | |
6454 | ||
6455 | static int | |
6456 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6457 | ptid_t thread_ptid) | |
6458 | { | |
6459 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6460 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6461 | { | |
6462 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6463 | return 1; | |
6464 | } | |
6465 | ||
6466 | return 0; | |
6467 | } | |
6468 | ||
85ad3aaf PA |
6469 | /* Return the thread's pending status used to determine whether the |
6470 | thread is a fork parent stopped at a fork event. */ | |
6471 | ||
6472 | static struct target_waitstatus * | |
6473 | thread_pending_fork_status (struct thread_info *thread) | |
6474 | { | |
6475 | if (thread->suspend.waitstatus_pending_p) | |
6476 | return &thread->suspend.waitstatus; | |
6477 | else | |
6478 | return &thread->pending_follow; | |
6479 | } | |
6480 | ||
6481 | /* Determine if THREAD is a pending fork parent thread. */ | |
6482 | ||
6483 | static int | |
6484 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6485 | { | |
6486 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6487 | int pid = -1; | |
6488 | ||
6489 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6490 | } | |
6491 | ||
cbb8991c DB |
6492 | /* Check whether EVENT is a fork event, and if it is, remove the |
6493 | fork child from the context list passed in DATA. */ | |
6494 | ||
6495 | static int | |
6496 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6497 | QUEUE_ITER (stop_reply_p) *iter, | |
6498 | stop_reply_p event, | |
6499 | void *data) | |
6500 | { | |
19ba03f4 SM |
6501 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6502 | struct threads_listing_context *context | |
6503 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6504 | |
6505 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6506 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6507 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6508 | threads_listing_context_remove (&event->ws, context); | |
cbb8991c DB |
6509 | |
6510 | return 1; | |
6511 | } | |
6512 | ||
6513 | /* If CONTEXT contains any fork child threads that have not been | |
6514 | reported yet, remove them from the CONTEXT list. If such a | |
6515 | thread exists it is because we are stopped at a fork catchpoint | |
6516 | and have not yet called follow_fork, which will set up the | |
6517 | host-side data structures for the new process. */ | |
6518 | ||
6519 | static void | |
6520 | remove_new_fork_children (struct threads_listing_context *context) | |
6521 | { | |
6522 | struct thread_info * thread; | |
6523 | int pid = -1; | |
6524 | struct notif_client *notif = ¬if_client_stop; | |
6525 | struct queue_iter_param param; | |
6526 | ||
6527 | /* For any threads stopped at a fork event, remove the corresponding | |
6528 | fork child threads from the CONTEXT list. */ | |
6529 | ALL_NON_EXITED_THREADS (thread) | |
6530 | { | |
85ad3aaf | 6531 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6532 | |
6533 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
6534 | { | |
6535 | threads_listing_context_remove (ws, context); | |
6536 | } | |
6537 | } | |
6538 | ||
6539 | /* Check for any pending fork events (not reported or processed yet) | |
6540 | in process PID and remove those fork child threads from the | |
6541 | CONTEXT list as well. */ | |
6542 | remote_notif_get_pending_events (notif); | |
6543 | param.input = context; | |
6544 | param.output = NULL; | |
6545 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6546 | remove_child_of_pending_fork, ¶m); | |
6547 | } | |
6548 | ||
85ad3aaf PA |
6549 | /* Check whether EVENT would prevent a global or process wildcard |
6550 | vCont action. */ | |
6551 | ||
6552 | static int | |
6553 | check_pending_event_prevents_wildcard_vcont_callback | |
6554 | (QUEUE (stop_reply_p) *q, | |
6555 | QUEUE_ITER (stop_reply_p) *iter, | |
6556 | stop_reply_p event, | |
6557 | void *data) | |
6558 | { | |
6559 | struct inferior *inf; | |
6560 | int *may_global_wildcard_vcont = (int *) data; | |
6561 | ||
6562 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6563 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6564 | return 1; | |
6565 | ||
6566 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6567 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6568 | *may_global_wildcard_vcont = 0; | |
6569 | ||
6570 | inf = find_inferior_ptid (event->ptid); | |
6571 | ||
6572 | /* This may be the first time we heard about this process. | |
6573 | Regardless, we must not do a global wildcard resume, otherwise | |
6574 | we'd resume this process too. */ | |
6575 | *may_global_wildcard_vcont = 0; | |
6576 | if (inf != NULL) | |
6577 | inf->priv->may_wildcard_vcont = 0; | |
6578 | ||
6579 | return 1; | |
6580 | } | |
6581 | ||
6582 | /* Check whether any event pending in the vStopped queue would prevent | |
6583 | a global or process wildcard vCont action. Clear | |
6584 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6585 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6586 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6587 | ||
6588 | static void | |
6589 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6590 | { | |
6591 | struct notif_client *notif = ¬if_client_stop; | |
6592 | ||
6593 | remote_notif_get_pending_events (notif); | |
6594 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6595 | check_pending_event_prevents_wildcard_vcont_callback, | |
6596 | may_global_wildcard); | |
6597 | } | |
6598 | ||
f48ff2a7 YQ |
6599 | /* Remove stop replies in the queue if its pid is equal to the given |
6600 | inferior's pid. */ | |
722247f1 YQ |
6601 | |
6602 | static int | |
f48ff2a7 YQ |
6603 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6604 | QUEUE_ITER (stop_reply_p) *iter, | |
6605 | stop_reply_p event, | |
6606 | void *data) | |
722247f1 | 6607 | { |
19ba03f4 SM |
6608 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6609 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6610 | |
f48ff2a7 | 6611 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6612 | { |
6613 | stop_reply_xfree (event); | |
6614 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6615 | } | |
6616 | ||
6617 | return 1; | |
6618 | } | |
6619 | ||
f48ff2a7 | 6620 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6621 | |
74531fed | 6622 | static void |
5f4cf0bb | 6623 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6624 | { |
722247f1 | 6625 | struct queue_iter_param param; |
f48ff2a7 YQ |
6626 | struct stop_reply *reply; |
6627 | struct remote_state *rs = get_remote_state (); | |
6628 | struct remote_notif_state *rns = rs->notif_state; | |
6629 | ||
6630 | /* This function can be notified when an inferior exists. When the | |
6631 | target is not remote, the notification state is NULL. */ | |
6632 | if (rs->remote_desc == NULL) | |
6633 | return; | |
6634 | ||
6635 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6636 | |
74531fed | 6637 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6638 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6639 | { |
722247f1 | 6640 | stop_reply_xfree (reply); |
f48ff2a7 | 6641 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6642 | } |
c906108c | 6643 | |
722247f1 YQ |
6644 | param.input = inf; |
6645 | param.output = NULL; | |
74531fed PA |
6646 | /* Discard the stop replies we have already pulled with |
6647 | vStopped. */ | |
722247f1 | 6648 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6649 | remove_stop_reply_for_inferior, ¶m); |
6650 | } | |
6651 | ||
bcc75809 YQ |
6652 | /* If its remote state is equal to the given remote state, |
6653 | remove EVENT from the stop reply queue. */ | |
6654 | ||
6655 | static int | |
6656 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6657 | QUEUE_ITER (stop_reply_p) *iter, | |
6658 | stop_reply_p event, | |
6659 | void *data) | |
6660 | { | |
19ba03f4 SM |
6661 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6662 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6663 | |
6664 | if (event->rs == rs) | |
6665 | { | |
6666 | stop_reply_xfree (event); | |
6667 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6668 | } | |
6669 | ||
6670 | return 1; | |
6671 | } | |
6672 | ||
6673 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6674 | |
6675 | static void | |
bcc75809 | 6676 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6677 | { |
6678 | struct queue_iter_param param; | |
6679 | ||
bcc75809 | 6680 | param.input = rs; |
f48ff2a7 YQ |
6681 | param.output = NULL; |
6682 | /* Discard the stop replies we have already pulled with | |
6683 | vStopped. */ | |
6684 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6685 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6686 | } |
74531fed | 6687 | |
722247f1 YQ |
6688 | /* A parameter to pass data in and out. */ |
6689 | ||
6690 | static int | |
6691 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6692 | QUEUE_ITER (stop_reply_p) *iter, | |
6693 | stop_reply_p event, | |
6694 | void *data) | |
6695 | { | |
19ba03f4 SM |
6696 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6697 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6698 | |
6699 | if (ptid_match (event->ptid, *ptid)) | |
6700 | { | |
6701 | param->output = event; | |
6702 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6703 | return 0; | |
c8e38a49 | 6704 | } |
722247f1 YQ |
6705 | |
6706 | return 1; | |
74531fed | 6707 | } |
43ff13b4 | 6708 | |
722247f1 YQ |
6709 | /* Remove the first reply in 'stop_reply_queue' which matches |
6710 | PTID. */ | |
2e9f7625 | 6711 | |
722247f1 YQ |
6712 | static struct stop_reply * |
6713 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6714 | { |
722247f1 YQ |
6715 | struct queue_iter_param param; |
6716 | ||
6717 | param.input = &ptid; | |
6718 | param.output = NULL; | |
6719 | ||
6720 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6721 | remote_notif_remove_once_on_match, ¶m); | |
6722 | if (notif_debug) | |
6723 | fprintf_unfiltered (gdb_stdlog, | |
6724 | "notif: discard queued event: 'Stop' in %s\n", | |
6725 | target_pid_to_str (ptid)); | |
a744cf53 | 6726 | |
722247f1 | 6727 | return param.output; |
74531fed | 6728 | } |
75c99385 | 6729 | |
74531fed PA |
6730 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6731 | remove it from the queue, and return it. Returns NULL if none is | |
6732 | found. If there are still queued events left to process, tell the | |
6733 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6734 | |
74531fed PA |
6735 | static struct stop_reply * |
6736 | queued_stop_reply (ptid_t ptid) | |
6737 | { | |
722247f1 | 6738 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6739 | |
722247f1 | 6740 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6741 | /* There's still at least an event left. */ |
6742 | mark_async_event_handler (remote_async_inferior_event_token); | |
6743 | ||
722247f1 | 6744 | return r; |
74531fed PA |
6745 | } |
6746 | ||
6747 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6748 | know that we now have at least one queued event left to pass to the | |
6749 | core side, tell the event loop to get back to target_wait soon. */ | |
6750 | ||
6751 | static void | |
6752 | push_stop_reply (struct stop_reply *new_event) | |
6753 | { | |
722247f1 | 6754 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6755 | |
722247f1 YQ |
6756 | if (notif_debug) |
6757 | fprintf_unfiltered (gdb_stdlog, | |
6758 | "notif: push 'Stop' %s to queue %d\n", | |
6759 | target_pid_to_str (new_event->ptid), | |
6760 | QUEUE_length (stop_reply_p, | |
6761 | stop_reply_queue)); | |
74531fed PA |
6762 | |
6763 | mark_async_event_handler (remote_async_inferior_event_token); | |
6764 | } | |
6765 | ||
722247f1 YQ |
6766 | static int |
6767 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6768 | QUEUE_ITER (stop_reply_p) *iter, | |
6769 | struct stop_reply *event, | |
6770 | void *data) | |
6771 | { | |
19ba03f4 | 6772 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6773 | |
6774 | return !(ptid_equal (*ptid, event->ptid) | |
6775 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6776 | } | |
6777 | ||
74531fed PA |
6778 | /* Returns true if we have a stop reply for PTID. */ |
6779 | ||
6780 | static int | |
6781 | peek_stop_reply (ptid_t ptid) | |
6782 | { | |
722247f1 YQ |
6783 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6784 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6785 | } |
6786 | ||
26d56a93 SL |
6787 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6788 | starting with P and ending with PEND matches PREFIX. */ | |
6789 | ||
6790 | static int | |
6791 | strprefix (const char *p, const char *pend, const char *prefix) | |
6792 | { | |
6793 | for ( ; p < pend; p++, prefix++) | |
6794 | if (*p != *prefix) | |
6795 | return 0; | |
6796 | return *prefix == '\0'; | |
6797 | } | |
6798 | ||
74531fed PA |
6799 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6800 | result is stored in EVENT, or throws an error. */ | |
6801 | ||
6802 | static void | |
6803 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6804 | { | |
6805 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6806 | ULONGEST addr; | |
6807 | char *p; | |
94585166 | 6808 | int skipregs = 0; |
74531fed PA |
6809 | |
6810 | event->ptid = null_ptid; | |
bcc75809 | 6811 | event->rs = get_remote_state (); |
74531fed PA |
6812 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6813 | event->ws.value.integer = 0; | |
f7e6eed5 | 6814 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6815 | event->regcache = NULL; |
dc146f7c | 6816 | event->core = -1; |
74531fed PA |
6817 | |
6818 | switch (buf[0]) | |
6819 | { | |
6820 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6821 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6822 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6823 | ss = signal number | |
6824 | n... = register number | |
6825 | r... = register contents | |
6826 | */ | |
6827 | ||
6828 | p = &buf[3]; /* after Txx */ | |
6829 | while (*p) | |
6830 | { | |
6831 | char *p1; | |
cea39f65 | 6832 | int fieldsize; |
43ff13b4 | 6833 | |
1f10ba14 PA |
6834 | p1 = strchr (p, ':'); |
6835 | if (p1 == NULL) | |
6836 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6837 | Packet: '%s'\n"), | |
6838 | p, buf); | |
6839 | if (p == p1) | |
6840 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6841 | Packet: '%s'\n"), | |
6842 | p, buf); | |
3c3bea1c | 6843 | |
1f10ba14 PA |
6844 | /* Some "registers" are actually extended stop information. |
6845 | Note if you're adding a new entry here: GDB 7.9 and | |
6846 | earlier assume that all register "numbers" that start | |
6847 | with an hex digit are real register numbers. Make sure | |
6848 | the server only sends such a packet if it knows the | |
6849 | client understands it. */ | |
c8e38a49 | 6850 | |
26d56a93 | 6851 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6852 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6853 | else if (strprefix (p, p1, "syscall_entry")) |
6854 | { | |
6855 | ULONGEST sysno; | |
6856 | ||
6857 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6858 | p = unpack_varlen_hex (++p1, &sysno); | |
6859 | event->ws.value.syscall_number = (int) sysno; | |
6860 | } | |
6861 | else if (strprefix (p, p1, "syscall_return")) | |
6862 | { | |
6863 | ULONGEST sysno; | |
6864 | ||
6865 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6866 | p = unpack_varlen_hex (++p1, &sysno); | |
6867 | event->ws.value.syscall_number = (int) sysno; | |
6868 | } | |
26d56a93 SL |
6869 | else if (strprefix (p, p1, "watch") |
6870 | || strprefix (p, p1, "rwatch") | |
6871 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6872 | { |
f7e6eed5 | 6873 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6874 | p = unpack_varlen_hex (++p1, &addr); |
6875 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6876 | } |
26d56a93 | 6877 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6878 | { |
6879 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6880 | ||
6881 | /* Make sure the stub doesn't forget to indicate support | |
6882 | with qSupported. */ | |
6883 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6884 | error (_("Unexpected swbreak stop reason")); | |
6885 | ||
6886 | /* The value part is documented as "must be empty", | |
6887 | though we ignore it, in case we ever decide to make | |
6888 | use of it in a backward compatible way. */ | |
8424cc97 | 6889 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6890 | } |
26d56a93 | 6891 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6892 | { |
6893 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6894 | ||
6895 | /* Make sure the stub doesn't forget to indicate support | |
6896 | with qSupported. */ | |
6897 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6898 | error (_("Unexpected hwbreak stop reason")); | |
6899 | ||
6900 | /* See above. */ | |
8424cc97 | 6901 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6902 | } |
26d56a93 | 6903 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6904 | { |
1f10ba14 | 6905 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 6906 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6907 | } |
26d56a93 | 6908 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6909 | { |
6910 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6911 | /* p1 will indicate "begin" or "end", but it makes | |
6912 | no difference for now, so ignore it. */ | |
8424cc97 | 6913 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6914 | } |
26d56a93 | 6915 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6916 | { |
6917 | ULONGEST c; | |
a744cf53 | 6918 | |
1f10ba14 PA |
6919 | p = unpack_varlen_hex (++p1, &c); |
6920 | event->core = c; | |
cea39f65 | 6921 | } |
26d56a93 | 6922 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6923 | { |
6924 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6925 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6926 | } | |
26d56a93 | 6927 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6928 | { |
6929 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6930 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6931 | } | |
26d56a93 | 6932 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6933 | { |
6934 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 6935 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 6936 | } |
6ab24463 | 6937 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6938 | { |
6939 | ULONGEST ignored; | |
6940 | char pathname[PATH_MAX]; | |
6941 | int pathlen; | |
6942 | ||
6943 | /* Determine the length of the execd pathname. */ | |
6944 | p = unpack_varlen_hex (++p1, &ignored); | |
6945 | pathlen = (p - p1) / 2; | |
6946 | ||
6947 | /* Save the pathname for event reporting and for | |
6948 | the next run command. */ | |
6949 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6950 | pathname[pathlen] = '\0'; | |
6951 | ||
6952 | /* This is freed during event handling. */ | |
6953 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6954 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6955 | ||
6956 | /* Skip the registers included in this packet, since | |
6957 | they may be for an architecture different from the | |
6958 | one used by the original program. */ | |
6959 | skipregs = 1; | |
6960 | } | |
65706a29 PA |
6961 | else if (strprefix (p, p1, "create")) |
6962 | { | |
6963 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 6964 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 6965 | } |
cea39f65 MS |
6966 | else |
6967 | { | |
1f10ba14 PA |
6968 | ULONGEST pnum; |
6969 | char *p_temp; | |
6970 | ||
94585166 DB |
6971 | if (skipregs) |
6972 | { | |
8424cc97 | 6973 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
6974 | p++; |
6975 | continue; | |
6976 | } | |
6977 | ||
1f10ba14 PA |
6978 | /* Maybe a real ``P'' register number. */ |
6979 | p_temp = unpack_varlen_hex (p, &pnum); | |
6980 | /* If the first invalid character is the colon, we got a | |
6981 | register number. Otherwise, it's an unknown stop | |
6982 | reason. */ | |
6983 | if (p_temp == p1) | |
6984 | { | |
6985 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6986 | cached_reg_t cached_reg; | |
d1dff226 | 6987 | struct gdbarch *gdbarch = target_gdbarch (); |
43ff13b4 | 6988 | |
1f10ba14 PA |
6989 | if (reg == NULL) |
6990 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6991 | Packet: '%s'\n"), |
1f10ba14 | 6992 | hex_string (pnum), p, buf); |
c8e38a49 | 6993 | |
1f10ba14 | 6994 | cached_reg.num = reg->regnum; |
d1dff226 AH |
6995 | cached_reg.data = (gdb_byte *) |
6996 | xmalloc (register_size (gdbarch, reg->regnum)); | |
4100683b | 6997 | |
1f10ba14 PA |
6998 | p = p1 + 1; |
6999 | fieldsize = hex2bin (p, cached_reg.data, | |
d1dff226 | 7000 | register_size (gdbarch, reg->regnum)); |
1f10ba14 | 7001 | p += 2 * fieldsize; |
d1dff226 | 7002 | if (fieldsize < register_size (gdbarch, reg->regnum)) |
1f10ba14 | 7003 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7004 | |
1f10ba14 PA |
7005 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
7006 | } | |
7007 | else | |
7008 | { | |
7009 | /* Not a number. Silently skip unknown optional | |
7010 | info. */ | |
8424cc97 | 7011 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7012 | } |
cea39f65 | 7013 | } |
c8e38a49 | 7014 | |
cea39f65 MS |
7015 | if (*p != ';') |
7016 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7017 | buf, p); | |
7018 | ++p; | |
7019 | } | |
5b5596ff PA |
7020 | |
7021 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7022 | break; | |
7023 | ||
c8e38a49 PA |
7024 | /* fall through */ |
7025 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7026 | { |
7027 | int sig; | |
7028 | ||
7029 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7030 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7031 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7032 | event->ws.value.sig = (enum gdb_signal) sig; | |
7033 | else | |
7034 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7035 | } | |
c8e38a49 | 7036 | break; |
65706a29 PA |
7037 | case 'w': /* Thread exited. */ |
7038 | { | |
7039 | char *p; | |
7040 | ULONGEST value; | |
7041 | ||
7042 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7043 | p = unpack_varlen_hex (&buf[1], &value); | |
7044 | event->ws.value.integer = value; | |
7045 | if (*p != ';') | |
7046 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7047 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7048 | break; |
7049 | } | |
c8e38a49 PA |
7050 | case 'W': /* Target exited. */ |
7051 | case 'X': | |
7052 | { | |
7053 | char *p; | |
7054 | int pid; | |
7055 | ULONGEST value; | |
82f73884 | 7056 | |
c8e38a49 PA |
7057 | /* GDB used to accept only 2 hex chars here. Stubs should |
7058 | only send more if they detect GDB supports multi-process | |
7059 | support. */ | |
7060 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7061 | |
c8e38a49 PA |
7062 | if (buf[0] == 'W') |
7063 | { | |
7064 | /* The remote process exited. */ | |
74531fed PA |
7065 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7066 | event->ws.value.integer = value; | |
c8e38a49 PA |
7067 | } |
7068 | else | |
7069 | { | |
7070 | /* The remote process exited with a signal. */ | |
74531fed | 7071 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7072 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7073 | event->ws.value.sig = (enum gdb_signal) value; | |
7074 | else | |
7075 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7076 | } |
82f73884 | 7077 | |
c8e38a49 PA |
7078 | /* If no process is specified, assume inferior_ptid. */ |
7079 | pid = ptid_get_pid (inferior_ptid); | |
7080 | if (*p == '\0') | |
7081 | ; | |
7082 | else if (*p == ';') | |
7083 | { | |
7084 | p++; | |
7085 | ||
0b24eb2d | 7086 | if (*p == '\0') |
82f73884 | 7087 | ; |
61012eef | 7088 | else if (startswith (p, "process:")) |
82f73884 | 7089 | { |
c8e38a49 | 7090 | ULONGEST upid; |
a744cf53 | 7091 | |
c8e38a49 PA |
7092 | p += sizeof ("process:") - 1; |
7093 | unpack_varlen_hex (p, &upid); | |
7094 | pid = upid; | |
82f73884 PA |
7095 | } |
7096 | else | |
7097 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7098 | } |
c8e38a49 PA |
7099 | else |
7100 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7101 | event->ptid = pid_to_ptid (pid); |
7102 | } | |
7103 | break; | |
f2faf941 PA |
7104 | case 'N': |
7105 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7106 | event->ptid = minus_one_ptid; | |
7107 | break; | |
74531fed PA |
7108 | } |
7109 | ||
6efcd9a8 | 7110 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7111 | error (_("No process or thread specified in stop reply: %s"), buf); |
7112 | } | |
7113 | ||
722247f1 YQ |
7114 | /* When the stub wants to tell GDB about a new notification reply, it |
7115 | sends a notification (%Stop, for example). Those can come it at | |
7116 | any time, hence, we have to make sure that any pending | |
7117 | putpkt/getpkt sequence we're making is finished, before querying | |
7118 | the stub for more events with the corresponding ack command | |
7119 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7120 | immediately upon receiving the notification, something like this | |
7121 | could happen: | |
74531fed PA |
7122 | |
7123 | 1.1) --> Hg 1 | |
7124 | 1.2) <-- OK | |
7125 | 1.3) --> g | |
7126 | 1.4) <-- %Stop | |
7127 | 1.5) --> vStopped | |
7128 | 1.6) <-- (registers reply to step #1.3) | |
7129 | ||
7130 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7131 | query. | |
7132 | ||
796cb314 | 7133 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7134 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7135 | doing whatever we were doing: | |
7136 | ||
7137 | 2.1) --> Hg 1 | |
7138 | 2.2) <-- OK | |
7139 | 2.3) --> g | |
7140 | 2.4) <-- %Stop | |
7141 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7142 | 2.5) <-- (registers reply to step #2.3) | |
7143 | ||
7144 | Eventualy after step #2.5, we return to the event loop, which | |
7145 | notices there's an event on the | |
7146 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7147 | associated callback --- the function below. At this point, we're | |
7148 | always safe to start a vStopped sequence. : | |
7149 | ||
7150 | 2.6) --> vStopped | |
7151 | 2.7) <-- T05 thread:2 | |
7152 | 2.8) --> vStopped | |
7153 | 2.9) --> OK | |
7154 | */ | |
7155 | ||
722247f1 YQ |
7156 | void |
7157 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7158 | { |
7159 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7160 | |
f48ff2a7 | 7161 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7162 | { |
722247f1 YQ |
7163 | if (notif_debug) |
7164 | fprintf_unfiltered (gdb_stdlog, | |
7165 | "notif: process: '%s' ack pending event\n", | |
7166 | nc->name); | |
74531fed | 7167 | |
722247f1 | 7168 | /* acknowledge */ |
f48ff2a7 YQ |
7169 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7170 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7171 | |
7172 | while (1) | |
7173 | { | |
7174 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7175 | if (strcmp (rs->buf, "OK") == 0) | |
7176 | break; | |
7177 | else | |
722247f1 | 7178 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7179 | } |
7180 | } | |
722247f1 YQ |
7181 | else |
7182 | { | |
7183 | if (notif_debug) | |
7184 | fprintf_unfiltered (gdb_stdlog, | |
7185 | "notif: process: '%s' no pending reply\n", | |
7186 | nc->name); | |
7187 | } | |
74531fed PA |
7188 | } |
7189 | ||
74531fed PA |
7190 | /* Called when it is decided that STOP_REPLY holds the info of the |
7191 | event that is to be returned to the core. This function always | |
7192 | destroys STOP_REPLY. */ | |
7193 | ||
7194 | static ptid_t | |
7195 | process_stop_reply (struct stop_reply *stop_reply, | |
7196 | struct target_waitstatus *status) | |
7197 | { | |
7198 | ptid_t ptid; | |
7199 | ||
7200 | *status = stop_reply->ws; | |
7201 | ptid = stop_reply->ptid; | |
7202 | ||
7203 | /* If no thread/process was reported by the stub, assume the current | |
7204 | inferior. */ | |
7205 | if (ptid_equal (ptid, null_ptid)) | |
7206 | ptid = inferior_ptid; | |
7207 | ||
5f3563ea | 7208 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7209 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7210 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7211 | { |
799a2abe | 7212 | struct private_thread_info *remote_thr; |
ee154bee | 7213 | |
5f3563ea PA |
7214 | /* Expedited registers. */ |
7215 | if (stop_reply->regcache) | |
7216 | { | |
217f1f79 | 7217 | struct regcache *regcache |
f5656ead | 7218 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
7219 | cached_reg_t *reg; |
7220 | int ix; | |
7221 | ||
7222 | for (ix = 0; | |
d1dff226 | 7223 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7224 | ix++) |
d1dff226 | 7225 | { |
217f1f79 | 7226 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7227 | xfree (reg->data); |
7228 | } | |
7229 | ||
5f3563ea PA |
7230 | VEC_free (cached_reg_t, stop_reply->regcache); |
7231 | } | |
74531fed | 7232 | |
1941c569 | 7233 | remote_notice_new_inferior (ptid, 0); |
85ad3aaf | 7234 | remote_thr = get_private_info_ptid (ptid); |
799a2abe PA |
7235 | remote_thr->core = stop_reply->core; |
7236 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7237 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7238 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7239 | } |
7240 | ||
74531fed PA |
7241 | stop_reply_xfree (stop_reply); |
7242 | return ptid; | |
7243 | } | |
7244 | ||
7245 | /* The non-stop mode version of target_wait. */ | |
7246 | ||
7247 | static ptid_t | |
47608cb1 | 7248 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7249 | { |
7250 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7251 | struct stop_reply *stop_reply; |
7252 | int ret; | |
fee9eda9 | 7253 | int is_notif = 0; |
74531fed PA |
7254 | |
7255 | /* If in non-stop mode, get out of getpkt even if a | |
7256 | notification is received. */ | |
7257 | ||
7258 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7259 | 0 /* forever */, &is_notif); |
74531fed PA |
7260 | while (1) |
7261 | { | |
fee9eda9 | 7262 | if (ret != -1 && !is_notif) |
74531fed PA |
7263 | switch (rs->buf[0]) |
7264 | { | |
7265 | case 'E': /* Error of some sort. */ | |
7266 | /* We're out of sync with the target now. Did it continue | |
7267 | or not? We can't tell which thread it was in non-stop, | |
7268 | so just ignore this. */ | |
7269 | warning (_("Remote failure reply: %s"), rs->buf); | |
7270 | break; | |
7271 | case 'O': /* Console output. */ | |
7272 | remote_console_output (rs->buf + 1); | |
7273 | break; | |
7274 | default: | |
7275 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7276 | break; | |
7277 | } | |
7278 | ||
7279 | /* Acknowledge a pending stop reply that may have arrived in the | |
7280 | mean time. */ | |
f48ff2a7 | 7281 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7282 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7283 | |
7284 | /* If indeed we noticed a stop reply, we're done. */ | |
7285 | stop_reply = queued_stop_reply (ptid); | |
7286 | if (stop_reply != NULL) | |
7287 | return process_stop_reply (stop_reply, status); | |
7288 | ||
47608cb1 | 7289 | /* Still no event. If we're just polling for an event, then |
74531fed | 7290 | return to the event loop. */ |
47608cb1 | 7291 | if (options & TARGET_WNOHANG) |
74531fed PA |
7292 | { |
7293 | status->kind = TARGET_WAITKIND_IGNORE; | |
7294 | return minus_one_ptid; | |
7295 | } | |
7296 | ||
47608cb1 | 7297 | /* Otherwise do a blocking wait. */ |
74531fed | 7298 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7299 | 1 /* forever */, &is_notif); |
74531fed PA |
7300 | } |
7301 | } | |
7302 | ||
7303 | /* Wait until the remote machine stops, then return, storing status in | |
7304 | STATUS just as `wait' would. */ | |
7305 | ||
7306 | static ptid_t | |
47608cb1 | 7307 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7308 | { |
7309 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7310 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7311 | char *buf; |
74531fed PA |
7312 | struct stop_reply *stop_reply; |
7313 | ||
47608cb1 PA |
7314 | again: |
7315 | ||
74531fed PA |
7316 | status->kind = TARGET_WAITKIND_IGNORE; |
7317 | status->value.integer = 0; | |
7318 | ||
7319 | stop_reply = queued_stop_reply (ptid); | |
7320 | if (stop_reply != NULL) | |
7321 | return process_stop_reply (stop_reply, status); | |
7322 | ||
7323 | if (rs->cached_wait_status) | |
7324 | /* Use the cached wait status, but only once. */ | |
7325 | rs->cached_wait_status = 0; | |
7326 | else | |
7327 | { | |
7328 | int ret; | |
722247f1 | 7329 | int is_notif; |
567420d1 PA |
7330 | int forever = ((options & TARGET_WNOHANG) == 0 |
7331 | && wait_forever_enabled_p); | |
7332 | ||
7333 | if (!rs->waiting_for_stop_reply) | |
7334 | { | |
7335 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7336 | return minus_one_ptid; | |
7337 | } | |
74531fed | 7338 | |
74531fed PA |
7339 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7340 | _never_ wait for ever -> test on target_is_async_p(). | |
7341 | However, before we do that we need to ensure that the caller | |
7342 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7343 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7344 | forever, &is_notif); |
722247f1 YQ |
7345 | |
7346 | /* GDB gets a notification. Return to core as this event is | |
7347 | not interesting. */ | |
7348 | if (ret != -1 && is_notif) | |
7349 | return minus_one_ptid; | |
567420d1 PA |
7350 | |
7351 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7352 | return minus_one_ptid; | |
74531fed PA |
7353 | } |
7354 | ||
7355 | buf = rs->buf; | |
7356 | ||
3a29589a DJ |
7357 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7358 | an 'F' or 'O' packet. */ | |
7359 | if (buf[0] != 'F' && buf[0] != 'O') | |
7360 | rs->ctrlc_pending_p = 0; | |
7361 | ||
74531fed PA |
7362 | switch (buf[0]) |
7363 | { | |
7364 | case 'E': /* Error of some sort. */ | |
7365 | /* We're out of sync with the target now. Did it continue or | |
7366 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7367 | rs->waiting_for_stop_reply = 0; |
7368 | ||
74531fed PA |
7369 | warning (_("Remote failure reply: %s"), buf); |
7370 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7371 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7372 | break; |
7373 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7374 | /* GDB may access the inferior memory while handling the File-I/O |
7375 | request, but we don't want GDB accessing memory while waiting | |
7376 | for a stop reply. See the comments in putpkt_binary. Set | |
7377 | waiting_for_stop_reply to 0 temporarily. */ | |
7378 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7379 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7380 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7381 | /* GDB handled the File-I/O request, and the target is running |
7382 | again. Keep waiting for events. */ | |
7383 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7384 | break; |
f2faf941 | 7385 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7386 | { |
29090fb6 LM |
7387 | struct stop_reply *stop_reply; |
7388 | ||
7389 | /* There is a stop reply to handle. */ | |
7390 | rs->waiting_for_stop_reply = 0; | |
7391 | ||
7392 | stop_reply | |
722247f1 YQ |
7393 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7394 | rs->buf); | |
74531fed | 7395 | |
74531fed | 7396 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7397 | break; |
7398 | } | |
7399 | case 'O': /* Console output. */ | |
7400 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7401 | break; |
7402 | case '\0': | |
b73be471 | 7403 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7404 | { |
7405 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7406 | remote system doesn't support it. */ | |
7407 | target_terminal_ours_for_output (); | |
7408 | printf_filtered | |
7409 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7410 | gdb_signal_to_name (rs->last_sent_signal)); |
7411 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
7412 | target_terminal_inferior (); |
7413 | ||
f5c4fcd9 TT |
7414 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7415 | putpkt (buf); | |
c8e38a49 | 7416 | break; |
43ff13b4 | 7417 | } |
c8e38a49 PA |
7418 | /* else fallthrough */ |
7419 | default: | |
7420 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7421 | break; |
43ff13b4 | 7422 | } |
c8e38a49 | 7423 | |
f2faf941 PA |
7424 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7425 | return minus_one_ptid; | |
7426 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7427 | { |
7428 | /* Nothing interesting happened. If we're doing a non-blocking | |
7429 | poll, we're done. Otherwise, go back to waiting. */ | |
7430 | if (options & TARGET_WNOHANG) | |
7431 | return minus_one_ptid; | |
7432 | else | |
7433 | goto again; | |
7434 | } | |
74531fed PA |
7435 | else if (status->kind != TARGET_WAITKIND_EXITED |
7436 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7437 | { |
7438 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7439 | record_currthread (rs, event_ptid); |
82f73884 PA |
7440 | else |
7441 | event_ptid = inferior_ptid; | |
43ff13b4 | 7442 | } |
74531fed PA |
7443 | else |
7444 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7445 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7446 | |
82f73884 | 7447 | return event_ptid; |
43ff13b4 JM |
7448 | } |
7449 | ||
74531fed PA |
7450 | /* Wait until the remote machine stops, then return, storing status in |
7451 | STATUS just as `wait' would. */ | |
7452 | ||
c8e38a49 | 7453 | static ptid_t |
117de6a9 | 7454 | remote_wait (struct target_ops *ops, |
47608cb1 | 7455 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7456 | { |
7457 | ptid_t event_ptid; | |
7458 | ||
6efcd9a8 | 7459 | if (target_is_non_stop_p ()) |
47608cb1 | 7460 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7461 | else |
47608cb1 | 7462 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7463 | |
d9d41e78 | 7464 | if (target_is_async_p ()) |
c8e38a49 | 7465 | { |
74531fed PA |
7466 | /* If there are are events left in the queue tell the event loop |
7467 | to return here. */ | |
722247f1 | 7468 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7469 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7470 | } |
c8e38a49 PA |
7471 | |
7472 | return event_ptid; | |
7473 | } | |
7474 | ||
74ca34ce | 7475 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7476 | |
b96ec7ac | 7477 | static int |
56be3814 | 7478 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7479 | { |
9890e433 | 7480 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
b96ec7ac | 7481 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7482 | char *buf, *p; |
9890e433 | 7483 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7484 | int i; |
7485 | ||
4082afcc | 7486 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7487 | return 0; |
7488 | ||
7489 | if (reg->pnum == -1) | |
7490 | return 0; | |
7491 | ||
2e9f7625 | 7492 | p = rs->buf; |
fcad0fa4 | 7493 | *p++ = 'p'; |
74ca34ce | 7494 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7495 | *p++ = '\0'; |
1f4437a4 MS |
7496 | putpkt (rs->buf); |
7497 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7498 | |
2e9f7625 DJ |
7499 | buf = rs->buf; |
7500 | ||
74ca34ce DJ |
7501 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7502 | { | |
7503 | case PACKET_OK: | |
7504 | break; | |
7505 | case PACKET_UNKNOWN: | |
7506 | return 0; | |
7507 | case PACKET_ERROR: | |
27a9c0bf MS |
7508 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
7509 | gdbarch_register_name (get_regcache_arch (regcache), | |
7510 | reg->regnum), | |
7511 | buf); | |
74ca34ce | 7512 | } |
3f9a994c JB |
7513 | |
7514 | /* If this register is unfetchable, tell the regcache. */ | |
7515 | if (buf[0] == 'x') | |
8480adf2 | 7516 | { |
56be3814 | 7517 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7518 | return 1; |
b96ec7ac | 7519 | } |
b96ec7ac | 7520 | |
3f9a994c JB |
7521 | /* Otherwise, parse and supply the value. */ |
7522 | p = buf; | |
7523 | i = 0; | |
7524 | while (p[0] != 0) | |
7525 | { | |
7526 | if (p[1] == 0) | |
74ca34ce | 7527 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7528 | |
7529 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7530 | p += 2; | |
7531 | } | |
56be3814 | 7532 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7533 | return 1; |
b96ec7ac AC |
7534 | } |
7535 | ||
74ca34ce DJ |
7536 | /* Fetch the registers included in the target's 'g' packet. */ |
7537 | ||
29709017 DJ |
7538 | static int |
7539 | send_g_packet (void) | |
c906108c | 7540 | { |
d01949b6 | 7541 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7542 | int buf_len; |
c906108c | 7543 | |
bba74b36 | 7544 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7545 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7546 | |
29709017 DJ |
7547 | /* We can get out of synch in various cases. If the first character |
7548 | in the buffer is not a hex character, assume that has happened | |
7549 | and try to fetch another packet to read. */ | |
7550 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7551 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7552 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7553 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7554 | { | |
7555 | if (remote_debug) | |
7556 | fprintf_unfiltered (gdb_stdlog, | |
7557 | "Bad register packet; fetching a new packet\n"); | |
7558 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7559 | } | |
7560 | ||
74ca34ce DJ |
7561 | buf_len = strlen (rs->buf); |
7562 | ||
7563 | /* Sanity check the received packet. */ | |
7564 | if (buf_len % 2 != 0) | |
7565 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7566 | |
7567 | return buf_len / 2; | |
7568 | } | |
7569 | ||
7570 | static void | |
56be3814 | 7571 | process_g_packet (struct regcache *regcache) |
29709017 | 7572 | { |
4a22f64d | 7573 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
7574 | struct remote_state *rs = get_remote_state (); |
7575 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
7576 | int i, buf_len; | |
7577 | char *p; | |
7578 | char *regs; | |
7579 | ||
7580 | buf_len = strlen (rs->buf); | |
7581 | ||
7582 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
7583 | if (buf_len > 2 * rsa->sizeof_g_packet) |
7584 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
7585 | ||
7586 | /* Save the size of the packet sent to us by the target. It is used | |
7587 | as a heuristic when determining the max size of packets that the | |
7588 | target can safely receive. */ | |
7589 | if (rsa->actual_register_packet_size == 0) | |
7590 | rsa->actual_register_packet_size = buf_len; | |
7591 | ||
7592 | /* If this is smaller than we guessed the 'g' packet would be, | |
7593 | update our records. A 'g' reply that doesn't include a register's | |
7594 | value implies either that the register is not available, or that | |
7595 | the 'p' packet must be used. */ | |
7596 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7597 | { |
9dc193c3 | 7598 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7599 | |
4a22f64d | 7600 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7601 | { |
9dc193c3 LF |
7602 | long offset = rsa->regs[i].offset; |
7603 | long reg_size = register_size (gdbarch, i); | |
7604 | ||
74ca34ce DJ |
7605 | if (rsa->regs[i].pnum == -1) |
7606 | continue; | |
7607 | ||
9dc193c3 | 7608 | if (offset >= sizeof_g_packet) |
74ca34ce | 7609 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7610 | else if (offset + reg_size > sizeof_g_packet) |
7611 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7612 | else |
74ca34ce | 7613 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7614 | } |
9dc193c3 LF |
7615 | |
7616 | /* Looks valid enough, we can assume this is the correct length | |
7617 | for a 'g' packet. It's important not to adjust | |
7618 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7619 | this "if" won't be run the next time the method is called | |
7620 | with a packet of the same size and one of the internal errors | |
7621 | below will trigger instead. */ | |
7622 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7623 | } |
b323314b | 7624 | |
224c3ddb | 7625 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7626 | |
7627 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7628 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7629 | |
c906108c SS |
7630 | /* Reply describes registers byte by byte, each byte encoded as two |
7631 | hex characters. Suck them all up, then supply them to the | |
7632 | register cacheing/storage mechanism. */ | |
7633 | ||
74ca34ce | 7634 | p = rs->buf; |
ea9c271d | 7635 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7636 | { |
74ca34ce DJ |
7637 | if (p[0] == 0 || p[1] == 0) |
7638 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7639 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7640 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7641 | |
c906108c | 7642 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7643 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7644 | else |
7645 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7646 | p += 2; | |
7647 | } | |
7648 | ||
a744cf53 MS |
7649 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7650 | { | |
7651 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7652 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7653 | |
7654 | if (r->in_g_packet) | |
7655 | { | |
9dc193c3 | 7656 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7657 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7658 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7659 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7660 | else if (rs->buf[r->offset * 2] == 'x') |
7661 | { | |
7662 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7663 | /* The register isn't available, mark it as such (at | |
7664 | the same time setting the value to zero). */ | |
7665 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7666 | } | |
7667 | else | |
7668 | regcache_raw_supply (regcache, r->regnum, | |
7669 | regs + r->offset); | |
7670 | } | |
7671 | } | |
c906108c SS |
7672 | } |
7673 | ||
29709017 | 7674 | static void |
56be3814 | 7675 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7676 | { |
7677 | send_g_packet (); | |
56be3814 | 7678 | process_g_packet (regcache); |
29709017 DJ |
7679 | } |
7680 | ||
e6e4e701 PA |
7681 | /* Make the remote selected traceframe match GDB's selected |
7682 | traceframe. */ | |
7683 | ||
7684 | static void | |
7685 | set_remote_traceframe (void) | |
7686 | { | |
7687 | int newnum; | |
262e1174 | 7688 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7689 | |
262e1174 | 7690 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7691 | return; |
7692 | ||
7693 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7694 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7695 | |
7696 | newnum = target_trace_find (tfind_number, | |
7697 | get_traceframe_number (), 0, 0, NULL); | |
7698 | ||
7699 | /* Should not happen. If it does, all bets are off. */ | |
7700 | if (newnum != get_traceframe_number ()) | |
7701 | warning (_("could not set remote traceframe")); | |
7702 | } | |
7703 | ||
74ca34ce | 7704 | static void |
28439f5e PA |
7705 | remote_fetch_registers (struct target_ops *ops, |
7706 | struct regcache *regcache, int regnum) | |
74ca34ce | 7707 | { |
74ca34ce DJ |
7708 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7709 | int i; | |
7710 | ||
e6e4e701 | 7711 | set_remote_traceframe (); |
bcc0c096 | 7712 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7713 | |
7714 | if (regnum >= 0) | |
7715 | { | |
7716 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7717 | |
74ca34ce DJ |
7718 | gdb_assert (reg != NULL); |
7719 | ||
7720 | /* If this register might be in the 'g' packet, try that first - | |
7721 | we are likely to read more than one register. If this is the | |
7722 | first 'g' packet, we might be overly optimistic about its | |
7723 | contents, so fall back to 'p'. */ | |
7724 | if (reg->in_g_packet) | |
7725 | { | |
56be3814 | 7726 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7727 | if (reg->in_g_packet) |
7728 | return; | |
7729 | } | |
7730 | ||
56be3814 | 7731 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7732 | return; |
7733 | ||
7734 | /* This register is not available. */ | |
56be3814 | 7735 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7736 | |
7737 | return; | |
7738 | } | |
7739 | ||
56be3814 | 7740 | fetch_registers_using_g (regcache); |
74ca34ce | 7741 | |
4a22f64d | 7742 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7743 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7744 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7745 | { |
7746 | /* This register is not available. */ | |
56be3814 | 7747 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7748 | } |
7749 | } | |
7750 | ||
c906108c SS |
7751 | /* Prepare to store registers. Since we may send them all (using a |
7752 | 'G' request), we have to read out the ones we don't want to change | |
7753 | first. */ | |
7754 | ||
c5aa993b | 7755 | static void |
f32dbf8c | 7756 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7757 | { |
ea9c271d | 7758 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 7759 | int i; |
cf0e1e0d | 7760 | |
c906108c | 7761 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7762 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7763 | { |
7764 | case PACKET_DISABLE: | |
7765 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7766 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7767 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7768 | if (rsa->regs[i].in_g_packet) |
8e368124 | 7769 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
7770 | break; |
7771 | case PACKET_ENABLE: | |
7772 | break; | |
7773 | } | |
7774 | } | |
7775 | ||
ad10f812 | 7776 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7777 | packet was not recognized. */ |
5a2468f5 JM |
7778 | |
7779 | static int | |
1f4437a4 MS |
7780 | store_register_using_P (const struct regcache *regcache, |
7781 | struct packet_reg *reg) | |
5a2468f5 | 7782 | { |
4a22f64d | 7783 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7784 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7785 | /* Try storing a single register. */ |
6d820c5c | 7786 | char *buf = rs->buf; |
9890e433 | 7787 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 7788 | char *p; |
5a2468f5 | 7789 | |
4082afcc | 7790 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7791 | return 0; |
7792 | ||
7793 | if (reg->pnum == -1) | |
7794 | return 0; | |
7795 | ||
ea9c271d | 7796 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7797 | p = buf + strlen (buf); |
56be3814 | 7798 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7799 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7800 | putpkt (rs->buf); |
7801 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7802 | |
74ca34ce DJ |
7803 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7804 | { | |
7805 | case PACKET_OK: | |
7806 | return 1; | |
7807 | case PACKET_ERROR: | |
27a9c0bf MS |
7808 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7809 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7810 | case PACKET_UNKNOWN: |
7811 | return 0; | |
7812 | default: | |
7813 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7814 | } | |
c906108c SS |
7815 | } |
7816 | ||
23860348 MS |
7817 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7818 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7819 | |
7820 | static void | |
56be3814 | 7821 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7822 | { |
d01949b6 | 7823 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7824 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7825 | gdb_byte *regs; |
c906108c SS |
7826 | char *p; |
7827 | ||
193cb69f AC |
7828 | /* Extract all the registers in the regcache copying them into a |
7829 | local buffer. */ | |
7830 | { | |
b323314b | 7831 | int i; |
a744cf53 | 7832 | |
224c3ddb | 7833 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7834 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7835 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7836 | { |
ea9c271d | 7837 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7838 | |
b323314b | 7839 | if (r->in_g_packet) |
56be3814 | 7840 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7841 | } |
7842 | } | |
c906108c SS |
7843 | |
7844 | /* Command describes registers byte by byte, | |
7845 | each byte encoded as two hex characters. */ | |
6d820c5c | 7846 | p = rs->buf; |
193cb69f | 7847 | *p++ = 'G'; |
74ca34ce | 7848 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
7849 | putpkt (rs->buf); |
7850 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7851 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7852 | error (_("Could not write registers; remote failure reply '%s'"), |
7853 | rs->buf); | |
c906108c | 7854 | } |
74ca34ce DJ |
7855 | |
7856 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7857 | of the register cache buffer. FIXME: ignores errors. */ | |
7858 | ||
7859 | static void | |
28439f5e PA |
7860 | remote_store_registers (struct target_ops *ops, |
7861 | struct regcache *regcache, int regnum) | |
74ca34ce | 7862 | { |
74ca34ce DJ |
7863 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7864 | int i; | |
7865 | ||
e6e4e701 | 7866 | set_remote_traceframe (); |
bcc0c096 | 7867 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7868 | |
7869 | if (regnum >= 0) | |
7870 | { | |
7871 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7872 | |
74ca34ce DJ |
7873 | gdb_assert (reg != NULL); |
7874 | ||
7875 | /* Always prefer to store registers using the 'P' packet if | |
7876 | possible; we often change only a small number of registers. | |
7877 | Sometimes we change a larger number; we'd need help from a | |
7878 | higher layer to know to use 'G'. */ | |
56be3814 | 7879 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7880 | return; |
7881 | ||
7882 | /* For now, don't complain if we have no way to write the | |
7883 | register. GDB loses track of unavailable registers too | |
7884 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7885 | any way to read the register, either... */ |
74ca34ce DJ |
7886 | if (!reg->in_g_packet) |
7887 | return; | |
7888 | ||
56be3814 | 7889 | store_registers_using_G (regcache); |
74ca34ce DJ |
7890 | return; |
7891 | } | |
7892 | ||
56be3814 | 7893 | store_registers_using_G (regcache); |
74ca34ce | 7894 | |
4a22f64d | 7895 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7896 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7897 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7898 | /* See above for why we do not issue an error here. */ |
7899 | continue; | |
7900 | } | |
c906108c SS |
7901 | \f |
7902 | ||
7903 | /* Return the number of hex digits in num. */ | |
7904 | ||
7905 | static int | |
fba45db2 | 7906 | hexnumlen (ULONGEST num) |
c906108c SS |
7907 | { |
7908 | int i; | |
7909 | ||
7910 | for (i = 0; num != 0; i++) | |
7911 | num >>= 4; | |
7912 | ||
325fac50 | 7913 | return std::max (i, 1); |
c906108c SS |
7914 | } |
7915 | ||
2df3850c | 7916 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7917 | |
7918 | static int | |
fba45db2 | 7919 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7920 | { |
c906108c | 7921 | int len = hexnumlen (num); |
a744cf53 | 7922 | |
2df3850c JM |
7923 | return hexnumnstr (buf, num, len); |
7924 | } | |
7925 | ||
c906108c | 7926 | |
2df3850c | 7927 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7928 | |
2df3850c | 7929 | static int |
fba45db2 | 7930 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7931 | { |
7932 | int i; | |
7933 | ||
7934 | buf[width] = '\0'; | |
7935 | ||
7936 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7937 | { |
c5aa993b | 7938 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7939 | num >>= 4; |
7940 | } | |
7941 | ||
2df3850c | 7942 | return width; |
c906108c SS |
7943 | } |
7944 | ||
23860348 | 7945 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7946 | |
7947 | static CORE_ADDR | |
fba45db2 | 7948 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7949 | { |
883b9c6c | 7950 | unsigned int address_size = remote_address_size; |
a744cf53 | 7951 | |
911c95a5 UW |
7952 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7953 | if (!address_size) | |
f5656ead | 7954 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7955 | |
7956 | if (address_size > 0 | |
7957 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7958 | { |
7959 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7960 | in a ULONGEST variable. */ |
c906108c | 7961 | ULONGEST mask = 1; |
a744cf53 | 7962 | |
911c95a5 | 7963 | mask = (mask << address_size) - 1; |
c906108c SS |
7964 | addr &= mask; |
7965 | } | |
7966 | return addr; | |
7967 | } | |
7968 | ||
7969 | /* Determine whether the remote target supports binary downloading. | |
7970 | This is accomplished by sending a no-op memory write of zero length | |
7971 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7972 | the whole packet, since many stubs strip the eighth bit and |
7973 | subsequently compute a wrong checksum, which causes real havoc with | |
7974 | remote_write_bytes. | |
7a292a7a | 7975 | |
96baa820 | 7976 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7977 | clean. In cases like this, the user should clear "remote |
23860348 | 7978 | X-packet". */ |
96baa820 | 7979 | |
c906108c | 7980 | static void |
fba45db2 | 7981 | check_binary_download (CORE_ADDR addr) |
c906108c | 7982 | { |
d01949b6 | 7983 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7984 | |
4082afcc | 7985 | switch (packet_support (PACKET_X)) |
c906108c | 7986 | { |
96baa820 JM |
7987 | case PACKET_DISABLE: |
7988 | break; | |
7989 | case PACKET_ENABLE: | |
7990 | break; | |
7991 | case PACKET_SUPPORT_UNKNOWN: | |
7992 | { | |
96baa820 | 7993 | char *p; |
802188a7 | 7994 | |
2e9f7625 | 7995 | p = rs->buf; |
96baa820 JM |
7996 | *p++ = 'X'; |
7997 | p += hexnumstr (p, (ULONGEST) addr); | |
7998 | *p++ = ','; | |
7999 | p += hexnumstr (p, (ULONGEST) 0); | |
8000 | *p++ = ':'; | |
8001 | *p = '\0'; | |
802188a7 | 8002 | |
2e9f7625 | 8003 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8004 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8005 | |
2e9f7625 | 8006 | if (rs->buf[0] == '\0') |
96baa820 JM |
8007 | { |
8008 | if (remote_debug) | |
8009 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8010 | "binary downloading NOT " |
8011 | "supported by target\n"); | |
444abaca | 8012 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8013 | } |
8014 | else | |
8015 | { | |
8016 | if (remote_debug) | |
8017 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8018 | "binary downloading supported by target\n"); |
444abaca | 8019 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8020 | } |
8021 | break; | |
8022 | } | |
c906108c SS |
8023 | } |
8024 | } | |
8025 | ||
124e13d9 SM |
8026 | /* Helper function to resize the payload in order to try to get a good |
8027 | alignment. We try to write an amount of data such that the next write will | |
8028 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8029 | ||
8030 | static int | |
8031 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8032 | { | |
8033 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8034 | } | |
8035 | ||
c906108c SS |
8036 | /* Write memory data directly to the remote machine. |
8037 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8038 | HEADER is the starting part of the packet. |
c906108c SS |
8039 | MEMADDR is the address in the remote memory space. |
8040 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8041 | LEN_UNITS is the number of addressable units to write. |
8042 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8043 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8044 | should send data as binary ('X'), or hex-encoded ('M'). | |
8045 | ||
8046 | The function creates packet of the form | |
8047 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8048 | ||
124e13d9 | 8049 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8050 | |
8051 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8052 | are omitted. | |
8053 | ||
9b409511 | 8054 | Return the transferred status, error or OK (an |
124e13d9 SM |
8055 | 'enum target_xfer_status' value). Save the number of addressable units |
8056 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8057 | ||
8058 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8059 | exchange between gdb and the stub could look like (?? in place of the | |
8060 | checksum): | |
8061 | ||
8062 | -> $m1000,4#?? | |
8063 | <- aaaabbbbccccdddd | |
8064 | ||
8065 | -> $M1000,3:eeeeffffeeee#?? | |
8066 | <- OK | |
8067 | ||
8068 | -> $m1000,4#?? | |
8069 | <- eeeeffffeeeedddd */ | |
c906108c | 8070 | |
9b409511 | 8071 | static enum target_xfer_status |
a76d924d | 8072 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8073 | const gdb_byte *myaddr, ULONGEST len_units, |
8074 | int unit_size, ULONGEST *xfered_len_units, | |
8075 | char packet_format, int use_length) | |
c906108c | 8076 | { |
6d820c5c | 8077 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8078 | char *p; |
a76d924d DJ |
8079 | char *plen = NULL; |
8080 | int plenlen = 0; | |
124e13d9 SM |
8081 | int todo_units; |
8082 | int units_written; | |
8083 | int payload_capacity_bytes; | |
8084 | int payload_length_bytes; | |
a76d924d DJ |
8085 | |
8086 | if (packet_format != 'X' && packet_format != 'M') | |
8087 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8088 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8089 | |
124e13d9 | 8090 | if (len_units == 0) |
9b409511 | 8091 | return TARGET_XFER_EOF; |
b2182ed2 | 8092 | |
124e13d9 | 8093 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8094 | |
6d820c5c DJ |
8095 | /* The packet buffer will be large enough for the payload; |
8096 | get_memory_packet_size ensures this. */ | |
a76d924d | 8097 | rs->buf[0] = '\0'; |
c906108c | 8098 | |
a257b5bb | 8099 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8100 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8101 | ||
124e13d9 | 8102 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8103 | if (!use_length) |
0df8b418 | 8104 | /* The comma won't be used. */ |
124e13d9 SM |
8105 | payload_capacity_bytes += 1; |
8106 | payload_capacity_bytes -= strlen (header); | |
8107 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8108 | |
a76d924d | 8109 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8110 | |
a76d924d DJ |
8111 | strcat (rs->buf, header); |
8112 | p = rs->buf + strlen (header); | |
8113 | ||
8114 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8115 | if (packet_format == 'X') | |
c906108c | 8116 | { |
23860348 | 8117 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8118 | todo_units = std::min (len_units, |
8119 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8120 | if (use_length) |
124e13d9 | 8121 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8122 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8123 | } |
8124 | else | |
8125 | { | |
124e13d9 | 8126 | /* Number of bytes that will fit. */ |
325fac50 PA |
8127 | todo_units |
8128 | = std::min (len_units, | |
8129 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8130 | if (use_length) |
124e13d9 | 8131 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8132 | todo_units = std::min (todo_units, |
8133 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8134 | } |
a76d924d | 8135 | |
124e13d9 | 8136 | if (todo_units <= 0) |
3de11b2e | 8137 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8138 | _("minimum packet size too small to write data")); |
802188a7 | 8139 | |
6765f3e5 DJ |
8140 | /* If we already need another packet, then try to align the end |
8141 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8142 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8143 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8144 | |
a257b5bb | 8145 | /* Append "<memaddr>". */ |
917317f4 JM |
8146 | memaddr = remote_address_masked (memaddr); |
8147 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8148 | |
a76d924d DJ |
8149 | if (use_length) |
8150 | { | |
8151 | /* Append ",". */ | |
8152 | *p++ = ','; | |
802188a7 | 8153 | |
124e13d9 SM |
8154 | /* Append the length and retain its location and size. It may need to be |
8155 | adjusted once the packet body has been created. */ | |
a76d924d | 8156 | plen = p; |
124e13d9 | 8157 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8158 | p += plenlen; |
8159 | } | |
a257b5bb AC |
8160 | |
8161 | /* Append ":". */ | |
917317f4 JM |
8162 | *p++ = ':'; |
8163 | *p = '\0'; | |
802188a7 | 8164 | |
a257b5bb | 8165 | /* Append the packet body. */ |
a76d924d | 8166 | if (packet_format == 'X') |
917317f4 | 8167 | { |
917317f4 JM |
8168 | /* Binary mode. Send target system values byte by byte, in |
8169 | increasing byte addresses. Only escape certain critical | |
8170 | characters. */ | |
124e13d9 SM |
8171 | payload_length_bytes = |
8172 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8173 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8174 | |
124e13d9 | 8175 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8176 | a second try to keep the end of the packet aligned. Don't do |
8177 | this if the packet is tiny. */ | |
124e13d9 | 8178 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8179 | { |
124e13d9 SM |
8180 | int new_todo_units; |
8181 | ||
8182 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8183 | ||
8184 | if (new_todo_units != units_written) | |
8185 | payload_length_bytes = | |
8186 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8187 | (gdb_byte *) p, &units_written, | |
8188 | payload_capacity_bytes); | |
6765f3e5 DJ |
8189 | } |
8190 | ||
124e13d9 SM |
8191 | p += payload_length_bytes; |
8192 | if (use_length && units_written < todo_units) | |
c906108c | 8193 | { |
802188a7 | 8194 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8195 | and we have actually sent fewer units than planned. |
917317f4 JM |
8196 | Fix-up the length field of the packet. Use the same |
8197 | number of characters as before. */ | |
124e13d9 SM |
8198 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8199 | plenlen); | |
917317f4 | 8200 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8201 | } |
a76d924d DJ |
8202 | } |
8203 | else | |
8204 | { | |
917317f4 JM |
8205 | /* Normal mode: Send target system values byte by byte, in |
8206 | increasing byte addresses. Each byte is encoded as a two hex | |
8207 | value. */ | |
124e13d9 SM |
8208 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8209 | units_written = todo_units; | |
c906108c | 8210 | } |
802188a7 | 8211 | |
2e9f7625 | 8212 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8213 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8214 | |
2e9f7625 | 8215 | if (rs->buf[0] == 'E') |
00d84524 | 8216 | return TARGET_XFER_E_IO; |
802188a7 | 8217 | |
124e13d9 SM |
8218 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8219 | send fewer units than we'd planned. */ | |
8220 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 8221 | return TARGET_XFER_OK; |
c906108c SS |
8222 | } |
8223 | ||
a76d924d DJ |
8224 | /* Write memory data directly to the remote machine. |
8225 | This does not inform the data cache; the data cache uses this. | |
8226 | MEMADDR is the address in the remote memory space. | |
8227 | MYADDR is the address of the buffer in our space. | |
8228 | LEN is the number of bytes. | |
8229 | ||
9b409511 YQ |
8230 | Return the transferred status, error or OK (an |
8231 | 'enum target_xfer_status' value). Save the number of bytes | |
8232 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8233 | |
9b409511 YQ |
8234 | static enum target_xfer_status |
8235 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8236 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8237 | { |
a121b7c1 | 8238 | const char *packet_format = NULL; |
a76d924d DJ |
8239 | |
8240 | /* Check whether the target supports binary download. */ | |
8241 | check_binary_download (memaddr); | |
8242 | ||
4082afcc | 8243 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8244 | { |
8245 | case PACKET_ENABLE: | |
8246 | packet_format = "X"; | |
8247 | break; | |
8248 | case PACKET_DISABLE: | |
8249 | packet_format = "M"; | |
8250 | break; | |
8251 | case PACKET_SUPPORT_UNKNOWN: | |
8252 | internal_error (__FILE__, __LINE__, | |
8253 | _("remote_write_bytes: bad internal state")); | |
8254 | default: | |
8255 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8256 | } | |
8257 | ||
8258 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8259 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8260 | packet_format[0], 1); |
a76d924d DJ |
8261 | } |
8262 | ||
9217e74e YQ |
8263 | /* Read memory data directly from the remote machine. |
8264 | This does not use the data cache; the data cache uses this. | |
8265 | MEMADDR is the address in the remote memory space. | |
8266 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8267 | LEN_UNITS is the number of addressable memory units to read.. |
8268 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8269 | |
8270 | Return the transferred status, error or OK (an | |
8271 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8272 | transferred in *XFERED_LEN_UNITS. |
8273 | ||
8274 | See the comment of remote_write_bytes_aux for an example of | |
8275 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8276 | |
8277 | static enum target_xfer_status | |
124e13d9 SM |
8278 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8279 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8280 | { |
8281 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8282 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8283 | char *p; |
124e13d9 SM |
8284 | int todo_units; |
8285 | int decoded_bytes; | |
9217e74e | 8286 | |
124e13d9 | 8287 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8288 | /* The packet buffer will be large enough for the payload; |
8289 | get_memory_packet_size ensures this. */ | |
8290 | ||
124e13d9 | 8291 | /* Number of units that will fit. */ |
325fac50 PA |
8292 | todo_units = std::min (len_units, |
8293 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8294 | |
8295 | /* Construct "m"<memaddr>","<len>". */ | |
8296 | memaddr = remote_address_masked (memaddr); | |
8297 | p = rs->buf; | |
8298 | *p++ = 'm'; | |
8299 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8300 | *p++ = ','; | |
124e13d9 | 8301 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8302 | *p = '\0'; |
8303 | putpkt (rs->buf); | |
8304 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8305 | if (rs->buf[0] == 'E' | |
8306 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8307 | && rs->buf[3] == '\0') | |
8308 | return TARGET_XFER_E_IO; | |
8309 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8310 | characters. */ | |
8311 | p = rs->buf; | |
124e13d9 | 8312 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8313 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8314 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
8315 | return TARGET_XFER_OK; |
8316 | } | |
8317 | ||
b55fbac4 YQ |
8318 | /* Using the set of read-only target sections of remote, read live |
8319 | read-only memory. | |
8acf9577 YQ |
8320 | |
8321 | For interface/parameters/return description see target.h, | |
8322 | to_xfer_partial. */ | |
8323 | ||
8324 | static enum target_xfer_status | |
b55fbac4 YQ |
8325 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8326 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8327 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8328 | { |
8329 | struct target_section *secp; | |
8330 | struct target_section_table *table; | |
8331 | ||
8332 | secp = target_section_by_addr (ops, memaddr); | |
8333 | if (secp != NULL | |
8334 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8335 | secp->the_bfd_section) | |
8336 | & SEC_READONLY)) | |
8337 | { | |
8338 | struct target_section *p; | |
8339 | ULONGEST memend = memaddr + len; | |
8340 | ||
8341 | table = target_get_section_table (ops); | |
8342 | ||
8343 | for (p = table->sections; p < table->sections_end; p++) | |
8344 | { | |
8345 | if (memaddr >= p->addr) | |
8346 | { | |
8347 | if (memend <= p->endaddr) | |
8348 | { | |
8349 | /* Entire transfer is within this section. */ | |
124e13d9 | 8350 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8351 | xfered_len); |
8acf9577 YQ |
8352 | } |
8353 | else if (memaddr >= p->endaddr) | |
8354 | { | |
8355 | /* This section ends before the transfer starts. */ | |
8356 | continue; | |
8357 | } | |
8358 | else | |
8359 | { | |
8360 | /* This section overlaps the transfer. Just do half. */ | |
8361 | len = p->endaddr - memaddr; | |
124e13d9 | 8362 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8363 | xfered_len); |
8acf9577 YQ |
8364 | } |
8365 | } | |
8366 | } | |
8367 | } | |
8368 | ||
8369 | return TARGET_XFER_EOF; | |
8370 | } | |
8371 | ||
9217e74e YQ |
8372 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8373 | first if the requested memory is unavailable in traceframe. | |
8374 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8375 | |
9b409511 | 8376 | static enum target_xfer_status |
8acf9577 | 8377 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8378 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8379 | ULONGEST *xfered_len) | |
c906108c | 8380 | { |
6b6aa828 | 8381 | if (len == 0) |
96c4f946 | 8382 | return TARGET_XFER_EOF; |
b2182ed2 | 8383 | |
8acf9577 YQ |
8384 | if (get_traceframe_number () != -1) |
8385 | { | |
8386 | VEC(mem_range_s) *available; | |
8387 | ||
8388 | /* If we fail to get the set of available memory, then the | |
8389 | target does not support querying traceframe info, and so we | |
8390 | attempt reading from the traceframe anyway (assuming the | |
8391 | target implements the old QTro packet then). */ | |
8392 | if (traceframe_available_memory (&available, memaddr, len)) | |
8393 | { | |
8394 | struct cleanup *old_chain; | |
8395 | ||
8396 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
8397 | ||
8398 | if (VEC_empty (mem_range_s, available) | |
8399 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
8400 | { | |
8401 | enum target_xfer_status res; | |
8402 | ||
8403 | /* Don't read into the traceframe's available | |
8404 | memory. */ | |
8405 | if (!VEC_empty (mem_range_s, available)) | |
8406 | { | |
8407 | LONGEST oldlen = len; | |
8408 | ||
8409 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
8410 | gdb_assert (len <= oldlen); | |
8411 | } | |
8412 | ||
8413 | do_cleanups (old_chain); | |
8414 | ||
8415 | /* This goes through the topmost target again. */ | |
b55fbac4 | 8416 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8417 | len, unit_size, xfered_len); |
8acf9577 YQ |
8418 | if (res == TARGET_XFER_OK) |
8419 | return TARGET_XFER_OK; | |
8420 | else | |
8421 | { | |
8422 | /* No use trying further, we know some memory starting | |
8423 | at MEMADDR isn't available. */ | |
8424 | *xfered_len = len; | |
8425 | return TARGET_XFER_UNAVAILABLE; | |
8426 | } | |
8427 | } | |
8428 | ||
8429 | /* Don't try to read more than how much is available, in | |
8430 | case the target implements the deprecated QTro packet to | |
8431 | cater for older GDBs (the target's knowledge of read-only | |
8432 | sections may be outdated by now). */ | |
8433 | len = VEC_index (mem_range_s, available, 0)->length; | |
8434 | ||
8435 | do_cleanups (old_chain); | |
8436 | } | |
8437 | } | |
8438 | ||
124e13d9 | 8439 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8440 | } |
74531fed | 8441 | |
c906108c | 8442 | \f |
c906108c | 8443 | |
a76d924d DJ |
8444 | /* Sends a packet with content determined by the printf format string |
8445 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8446 | whether the packet was a success, a failure, or unknown. */ | |
8447 | ||
77b64a49 PA |
8448 | static enum packet_result remote_send_printf (const char *format, ...) |
8449 | ATTRIBUTE_PRINTF (1, 2); | |
8450 | ||
2c0b251b | 8451 | static enum packet_result |
a76d924d DJ |
8452 | remote_send_printf (const char *format, ...) |
8453 | { | |
8454 | struct remote_state *rs = get_remote_state (); | |
8455 | int max_size = get_remote_packet_size (); | |
a76d924d | 8456 | va_list ap; |
a744cf53 | 8457 | |
a76d924d DJ |
8458 | va_start (ap, format); |
8459 | ||
8460 | rs->buf[0] = '\0'; | |
8461 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8462 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8463 | |
8464 | if (putpkt (rs->buf) < 0) | |
8465 | error (_("Communication problem with target.")); | |
8466 | ||
8467 | rs->buf[0] = '\0'; | |
8468 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8469 | ||
8470 | return packet_check_result (rs->buf); | |
8471 | } | |
8472 | ||
a76d924d DJ |
8473 | /* Flash writing can take quite some time. We'll set |
8474 | effectively infinite timeout for flash operations. | |
8475 | In future, we'll need to decide on a better approach. */ | |
8476 | static const int remote_flash_timeout = 1000; | |
8477 | ||
8478 | static void | |
8479 | remote_flash_erase (struct target_ops *ops, | |
8480 | ULONGEST address, LONGEST length) | |
8481 | { | |
f5656ead | 8482 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8483 | enum packet_result ret; |
2ec845e7 TT |
8484 | scoped_restore restore_timeout |
8485 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8486 | |
8487 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8488 | phex (address, addr_size), |
a76d924d DJ |
8489 | phex (length, 4)); |
8490 | switch (ret) | |
8491 | { | |
8492 | case PACKET_UNKNOWN: | |
8493 | error (_("Remote target does not support flash erase")); | |
8494 | case PACKET_ERROR: | |
8495 | error (_("Error erasing flash with vFlashErase packet")); | |
8496 | default: | |
8497 | break; | |
8498 | } | |
a76d924d DJ |
8499 | } |
8500 | ||
9b409511 YQ |
8501 | static enum target_xfer_status |
8502 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8503 | ULONGEST length, ULONGEST *xfered_len, | |
8504 | const gdb_byte *data) | |
a76d924d | 8505 | { |
2ec845e7 TT |
8506 | scoped_restore restore_timeout |
8507 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8508 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8509 | xfered_len,'X', 0); | |
a76d924d DJ |
8510 | } |
8511 | ||
8512 | static void | |
8513 | remote_flash_done (struct target_ops *ops) | |
8514 | { | |
a76d924d | 8515 | int ret; |
a76d924d | 8516 | |
2ec845e7 TT |
8517 | scoped_restore restore_timeout |
8518 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8519 | ||
a76d924d | 8520 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8521 | |
8522 | switch (ret) | |
8523 | { | |
8524 | case PACKET_UNKNOWN: | |
8525 | error (_("Remote target does not support vFlashDone")); | |
8526 | case PACKET_ERROR: | |
8527 | error (_("Error finishing flash operation")); | |
8528 | default: | |
8529 | break; | |
8530 | } | |
8531 | } | |
8532 | ||
c906108c | 8533 | static void |
fba45db2 | 8534 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8535 | { |
8536 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8537 | } | |
8538 | \f | |
8539 | /* Stuff for dealing with the packets which are part of this protocol. | |
8540 | See comment at top of file for details. */ | |
8541 | ||
1927e618 PA |
8542 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8543 | error to higher layers. Called when a serial error is detected. | |
8544 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8545 | the system error message for errno at function entry and final dot |
8546 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8547 | |
8548 | static void | |
8549 | unpush_and_perror (const char *string) | |
8550 | { | |
d6cb50a2 | 8551 | int saved_errno = errno; |
1927e618 PA |
8552 | |
8553 | remote_unpush_target (); | |
d6cb50a2 JK |
8554 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8555 | safe_strerror (saved_errno)); | |
1927e618 PA |
8556 | } |
8557 | ||
048094ac PA |
8558 | /* Read a single character from the remote end. The current quit |
8559 | handler is overridden to avoid quitting in the middle of packet | |
8560 | sequence, as that would break communication with the remote server. | |
8561 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8562 | |
8563 | static int | |
fba45db2 | 8564 | readchar (int timeout) |
c906108c SS |
8565 | { |
8566 | int ch; | |
5d93a237 | 8567 | struct remote_state *rs = get_remote_state (); |
048094ac | 8568 | |
2ec845e7 TT |
8569 | { |
8570 | scoped_restore restore_quit | |
8571 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8572 | |
2ec845e7 | 8573 | rs->got_ctrlc_during_io = 0; |
c906108c | 8574 | |
2ec845e7 | 8575 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8576 | |
2ec845e7 TT |
8577 | if (rs->got_ctrlc_during_io) |
8578 | set_quit_flag (); | |
8579 | } | |
048094ac | 8580 | |
2acceee2 | 8581 | if (ch >= 0) |
0876f84a | 8582 | return ch; |
2acceee2 JM |
8583 | |
8584 | switch ((enum serial_rc) ch) | |
c906108c SS |
8585 | { |
8586 | case SERIAL_EOF: | |
78a095c3 | 8587 | remote_unpush_target (); |
598d3636 | 8588 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8589 | /* no return */ |
c906108c | 8590 | case SERIAL_ERROR: |
1927e618 PA |
8591 | unpush_and_perror (_("Remote communication error. " |
8592 | "Target disconnected.")); | |
2acceee2 | 8593 | /* no return */ |
c906108c | 8594 | case SERIAL_TIMEOUT: |
2acceee2 | 8595 | break; |
c906108c | 8596 | } |
2acceee2 | 8597 | return ch; |
c906108c SS |
8598 | } |
8599 | ||
c33e31fd | 8600 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8601 | writing fails. The current quit handler is overridden to avoid |
8602 | quitting in the middle of packet sequence, as that would break | |
8603 | communication with the remote server. See | |
8604 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8605 | |
8606 | static void | |
8607 | remote_serial_write (const char *str, int len) | |
8608 | { | |
5d93a237 | 8609 | struct remote_state *rs = get_remote_state (); |
048094ac | 8610 | |
2ec845e7 TT |
8611 | scoped_restore restore_quit |
8612 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8613 | |
8614 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8615 | |
8616 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8617 | { |
1927e618 PA |
8618 | unpush_and_perror (_("Remote communication error. " |
8619 | "Target disconnected.")); | |
c33e31fd | 8620 | } |
048094ac PA |
8621 | |
8622 | if (rs->got_ctrlc_during_io) | |
8623 | set_quit_flag (); | |
c33e31fd PA |
8624 | } |
8625 | ||
6d820c5c DJ |
8626 | /* Send the command in *BUF to the remote machine, and read the reply |
8627 | into *BUF. Report an error if we get an error reply. Resize | |
8628 | *BUF using xrealloc if necessary to hold the result, and update | |
8629 | *SIZEOF_BUF. */ | |
c906108c SS |
8630 | |
8631 | static void | |
6d820c5c DJ |
8632 | remote_send (char **buf, |
8633 | long *sizeof_buf) | |
c906108c | 8634 | { |
6d820c5c | 8635 | putpkt (*buf); |
c2d11a7d | 8636 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8637 | |
6d820c5c DJ |
8638 | if ((*buf)[0] == 'E') |
8639 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8640 | } |
8641 | ||
b3ced9ba PA |
8642 | /* Return a string representing an escaped version of BUF, of len N. |
8643 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8644 | |
b3ced9ba | 8645 | static std::string |
6e5abd65 PA |
8646 | escape_buffer (const char *buf, int n) |
8647 | { | |
d7e74731 | 8648 | string_file stb; |
6e5abd65 | 8649 | |
d7e74731 PA |
8650 | stb.putstrn (buf, n, '\\'); |
8651 | return std::move (stb.string ()); | |
6e5abd65 PA |
8652 | } |
8653 | ||
c906108c SS |
8654 | /* Display a null-terminated packet on stdout, for debugging, using C |
8655 | string notation. */ | |
8656 | ||
8657 | static void | |
baa336ce | 8658 | print_packet (const char *buf) |
c906108c SS |
8659 | { |
8660 | puts_filtered ("\""); | |
43e526b9 | 8661 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8662 | puts_filtered ("\""); |
8663 | } | |
8664 | ||
8665 | int | |
baa336ce | 8666 | putpkt (const char *buf) |
c906108c SS |
8667 | { |
8668 | return putpkt_binary (buf, strlen (buf)); | |
8669 | } | |
8670 | ||
8671 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8672 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8673 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8674 | and for a possible /0 if we are debugging (remote_debug) and want |
8675 | to print the sent packet as a string. */ | |
c906108c SS |
8676 | |
8677 | static int | |
baa336ce | 8678 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8679 | { |
2d717e4f | 8680 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8681 | int i; |
8682 | unsigned char csum = 0; | |
224c3ddb | 8683 | char *buf2 = (char *) xmalloc (cnt + 6); |
a5c0808e | 8684 | struct cleanup *old_chain = make_cleanup (xfree, buf2); |
085dd6e6 | 8685 | |
c906108c SS |
8686 | int ch; |
8687 | int tcount = 0; | |
8688 | char *p; | |
8689 | ||
e24a49d8 PA |
8690 | /* Catch cases like trying to read memory or listing threads while |
8691 | we're waiting for a stop reply. The remote server wouldn't be | |
8692 | ready to handle this request, so we'd hang and timeout. We don't | |
8693 | have to worry about this in synchronous mode, because in that | |
8694 | case it's not possible to issue a command while the target is | |
74531fed PA |
8695 | running. This is not a problem in non-stop mode, because in that |
8696 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8697 | if (!target_is_non_stop_p () |
8698 | && target_is_async_p () | |
8699 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8700 | { |
8701 | error (_("Cannot execute this command while the target is running.\n" | |
8702 | "Use the \"interrupt\" command to stop the target\n" | |
8703 | "and then try again.")); | |
8704 | } | |
e24a49d8 | 8705 | |
2d717e4f DJ |
8706 | /* We're sending out a new packet. Make sure we don't look at a |
8707 | stale cached response. */ | |
8708 | rs->cached_wait_status = 0; | |
8709 | ||
c906108c SS |
8710 | /* Copy the packet into buffer BUF2, encapsulating it |
8711 | and giving it a checksum. */ | |
8712 | ||
c906108c SS |
8713 | p = buf2; |
8714 | *p++ = '$'; | |
8715 | ||
8716 | for (i = 0; i < cnt; i++) | |
8717 | { | |
8718 | csum += buf[i]; | |
8719 | *p++ = buf[i]; | |
8720 | } | |
8721 | *p++ = '#'; | |
8722 | *p++ = tohex ((csum >> 4) & 0xf); | |
8723 | *p++ = tohex (csum & 0xf); | |
8724 | ||
8725 | /* Send it over and over until we get a positive ack. */ | |
8726 | ||
8727 | while (1) | |
8728 | { | |
8729 | int started_error_output = 0; | |
8730 | ||
8731 | if (remote_debug) | |
8732 | { | |
8733 | *p = '\0'; | |
b3ced9ba | 8734 | |
6f8976bf YQ |
8735 | int len = (int) (p - buf2); |
8736 | ||
8737 | std::string str | |
8738 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
8739 | ||
8740 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
8741 | ||
8742 | if (str.length () > REMOTE_DEBUG_MAX_CHAR) | |
8743 | { | |
8744 | fprintf_unfiltered (gdb_stdlog, "[%zu bytes omitted]", | |
8745 | str.length () - REMOTE_DEBUG_MAX_CHAR); | |
8746 | } | |
8747 | ||
8748 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 8749 | |
0f71a2f6 | 8750 | gdb_flush (gdb_stdlog); |
c906108c | 8751 | } |
c33e31fd | 8752 | remote_serial_write (buf2, p - buf2); |
c906108c | 8753 | |
a6f3e723 SL |
8754 | /* If this is a no acks version of the remote protocol, send the |
8755 | packet and move on. */ | |
8756 | if (rs->noack_mode) | |
8757 | break; | |
8758 | ||
74531fed PA |
8759 | /* Read until either a timeout occurs (-2) or '+' is read. |
8760 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8761 | while (1) |
8762 | { | |
8763 | ch = readchar (remote_timeout); | |
8764 | ||
c5aa993b | 8765 | if (remote_debug) |
c906108c SS |
8766 | { |
8767 | switch (ch) | |
8768 | { | |
8769 | case '+': | |
1216fa2c | 8770 | case '-': |
c906108c SS |
8771 | case SERIAL_TIMEOUT: |
8772 | case '$': | |
74531fed | 8773 | case '%': |
c906108c SS |
8774 | if (started_error_output) |
8775 | { | |
8776 | putchar_unfiltered ('\n'); | |
8777 | started_error_output = 0; | |
8778 | } | |
8779 | } | |
8780 | } | |
8781 | ||
8782 | switch (ch) | |
8783 | { | |
8784 | case '+': | |
8785 | if (remote_debug) | |
0f71a2f6 | 8786 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 8787 | do_cleanups (old_chain); |
c906108c | 8788 | return 1; |
1216fa2c AC |
8789 | case '-': |
8790 | if (remote_debug) | |
8791 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8792 | /* FALLTHROUGH */ |
c906108c | 8793 | case SERIAL_TIMEOUT: |
c5aa993b | 8794 | tcount++; |
c906108c | 8795 | if (tcount > 3) |
a5c0808e PA |
8796 | { |
8797 | do_cleanups (old_chain); | |
8798 | return 0; | |
8799 | } | |
23860348 | 8800 | break; /* Retransmit buffer. */ |
c906108c SS |
8801 | case '$': |
8802 | { | |
40e3f985 | 8803 | if (remote_debug) |
2bc416ba | 8804 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8805 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8806 | /* It's probably an old response sent because an ACK |
8807 | was lost. Gobble up the packet and ack it so it | |
8808 | doesn't get retransmitted when we resend this | |
8809 | packet. */ | |
6d820c5c | 8810 | skip_frame (); |
c33e31fd | 8811 | remote_serial_write ("+", 1); |
23860348 | 8812 | continue; /* Now, go look for +. */ |
c906108c | 8813 | } |
74531fed PA |
8814 | |
8815 | case '%': | |
8816 | { | |
8817 | int val; | |
8818 | ||
8819 | /* If we got a notification, handle it, and go back to looking | |
8820 | for an ack. */ | |
8821 | /* We've found the start of a notification. Now | |
8822 | collect the data. */ | |
8823 | val = read_frame (&rs->buf, &rs->buf_size); | |
8824 | if (val >= 0) | |
8825 | { | |
8826 | if (remote_debug) | |
8827 | { | |
b3ced9ba | 8828 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 8829 | |
6e5abd65 PA |
8830 | fprintf_unfiltered (gdb_stdlog, |
8831 | " Notification received: %s\n", | |
b3ced9ba | 8832 | str.c_str ()); |
74531fed | 8833 | } |
5965e028 | 8834 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8835 | /* We're in sync now, rewait for the ack. */ |
8836 | tcount = 0; | |
8837 | } | |
8838 | else | |
8839 | { | |
8840 | if (remote_debug) | |
8841 | { | |
8842 | if (!started_error_output) | |
8843 | { | |
8844 | started_error_output = 1; | |
8845 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8846 | } | |
8847 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8848 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8849 | } | |
8850 | } | |
8851 | continue; | |
8852 | } | |
8853 | /* fall-through */ | |
c906108c SS |
8854 | default: |
8855 | if (remote_debug) | |
8856 | { | |
8857 | if (!started_error_output) | |
8858 | { | |
8859 | started_error_output = 1; | |
0f71a2f6 | 8860 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8861 | } |
0f71a2f6 | 8862 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8863 | } |
8864 | continue; | |
8865 | } | |
23860348 | 8866 | break; /* Here to retransmit. */ |
c906108c SS |
8867 | } |
8868 | ||
8869 | #if 0 | |
8870 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8871 | able to get out next time we call QUIT, without anything as |
8872 | violent as interrupt_query. If we want to provide a way out of | |
8873 | here without getting to the next QUIT, it should be based on | |
8874 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8875 | if (quit_flag) |
8876 | { | |
8877 | quit_flag = 0; | |
8878 | interrupt_query (); | |
8879 | } | |
8880 | #endif | |
8881 | } | |
a5c0808e PA |
8882 | |
8883 | do_cleanups (old_chain); | |
a6f3e723 | 8884 | return 0; |
c906108c SS |
8885 | } |
8886 | ||
6d820c5c DJ |
8887 | /* Come here after finding the start of a frame when we expected an |
8888 | ack. Do our best to discard the rest of this packet. */ | |
8889 | ||
8890 | static void | |
8891 | skip_frame (void) | |
8892 | { | |
8893 | int c; | |
8894 | ||
8895 | while (1) | |
8896 | { | |
8897 | c = readchar (remote_timeout); | |
8898 | switch (c) | |
8899 | { | |
8900 | case SERIAL_TIMEOUT: | |
8901 | /* Nothing we can do. */ | |
8902 | return; | |
8903 | case '#': | |
8904 | /* Discard the two bytes of checksum and stop. */ | |
8905 | c = readchar (remote_timeout); | |
8906 | if (c >= 0) | |
8907 | c = readchar (remote_timeout); | |
8908 | ||
8909 | return; | |
8910 | case '*': /* Run length encoding. */ | |
8911 | /* Discard the repeat count. */ | |
8912 | c = readchar (remote_timeout); | |
8913 | if (c < 0) | |
8914 | return; | |
8915 | break; | |
8916 | default: | |
8917 | /* A regular character. */ | |
8918 | break; | |
8919 | } | |
8920 | } | |
8921 | } | |
8922 | ||
c906108c | 8923 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8924 | into *BUF, verifying the checksum, length, and handling run-length |
8925 | compression. NUL terminate the buffer. If there is not enough room, | |
8926 | expand *BUF using xrealloc. | |
c906108c | 8927 | |
c2d11a7d JM |
8928 | Returns -1 on error, number of characters in buffer (ignoring the |
8929 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8930 | SERIAL status indications). */ |
c2d11a7d JM |
8931 | |
8932 | static long | |
6d820c5c DJ |
8933 | read_frame (char **buf_p, |
8934 | long *sizeof_buf) | |
c906108c SS |
8935 | { |
8936 | unsigned char csum; | |
c2d11a7d | 8937 | long bc; |
c906108c | 8938 | int c; |
6d820c5c | 8939 | char *buf = *buf_p; |
a6f3e723 | 8940 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8941 | |
8942 | csum = 0; | |
c2d11a7d | 8943 | bc = 0; |
c906108c SS |
8944 | |
8945 | while (1) | |
8946 | { | |
8947 | c = readchar (remote_timeout); | |
c906108c SS |
8948 | switch (c) |
8949 | { | |
8950 | case SERIAL_TIMEOUT: | |
8951 | if (remote_debug) | |
0f71a2f6 | 8952 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8953 | return -1; |
c906108c SS |
8954 | case '$': |
8955 | if (remote_debug) | |
0f71a2f6 JM |
8956 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8957 | gdb_stdlog); | |
23860348 | 8958 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8959 | case '#': |
8960 | { | |
8961 | unsigned char pktcsum; | |
e1b09194 AC |
8962 | int check_0 = 0; |
8963 | int check_1 = 0; | |
c906108c | 8964 | |
c2d11a7d | 8965 | buf[bc] = '\0'; |
c906108c | 8966 | |
e1b09194 AC |
8967 | check_0 = readchar (remote_timeout); |
8968 | if (check_0 >= 0) | |
8969 | check_1 = readchar (remote_timeout); | |
802188a7 | 8970 | |
e1b09194 AC |
8971 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8972 | { | |
8973 | if (remote_debug) | |
2bc416ba | 8974 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8975 | gdb_stdlog); |
e1b09194 AC |
8976 | return -1; |
8977 | } | |
8978 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8979 | { |
8980 | if (remote_debug) | |
2bc416ba | 8981 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8982 | gdb_stdlog); |
40e3f985 FN |
8983 | return -1; |
8984 | } | |
c906108c | 8985 | |
a6f3e723 SL |
8986 | /* Don't recompute the checksum; with no ack packets we |
8987 | don't have any way to indicate a packet retransmission | |
8988 | is necessary. */ | |
8989 | if (rs->noack_mode) | |
8990 | return bc; | |
8991 | ||
e1b09194 | 8992 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8993 | if (csum == pktcsum) |
c2d11a7d | 8994 | return bc; |
c906108c | 8995 | |
c5aa993b | 8996 | if (remote_debug) |
c906108c | 8997 | { |
b3ced9ba | 8998 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 8999 | |
6e5abd65 | 9000 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9001 | "Bad checksum, sentsum=0x%x, " |
9002 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9003 | pktcsum, csum, str.c_str ()); |
c906108c | 9004 | } |
c2d11a7d | 9005 | /* Number of characters in buffer ignoring trailing |
23860348 | 9006 | NULL. */ |
c2d11a7d | 9007 | return -1; |
c906108c | 9008 | } |
23860348 | 9009 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9010 | { |
9011 | int repeat; | |
c906108c | 9012 | |
a744cf53 | 9013 | csum += c; |
b4501125 AC |
9014 | c = readchar (remote_timeout); |
9015 | csum += c; | |
23860348 | 9016 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9017 | |
23860348 | 9018 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9019 | |
6d820c5c | 9020 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9021 | { |
6d820c5c DJ |
9022 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
9023 | { | |
9024 | /* Make some more room in the buffer. */ | |
9025 | *sizeof_buf += repeat; | |
224c3ddb | 9026 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9027 | buf = *buf_p; |
9028 | } | |
9029 | ||
c2d11a7d JM |
9030 | memset (&buf[bc], buf[bc - 1], repeat); |
9031 | bc += repeat; | |
c2c6d25f JM |
9032 | continue; |
9033 | } | |
9034 | ||
c2d11a7d | 9035 | buf[bc] = '\0'; |
6d820c5c | 9036 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9037 | return -1; |
c2c6d25f | 9038 | } |
c906108c | 9039 | default: |
6d820c5c | 9040 | if (bc >= *sizeof_buf - 1) |
c906108c | 9041 | { |
6d820c5c DJ |
9042 | /* Make some more room in the buffer. */ |
9043 | *sizeof_buf *= 2; | |
224c3ddb | 9044 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9045 | buf = *buf_p; |
c906108c SS |
9046 | } |
9047 | ||
6d820c5c DJ |
9048 | buf[bc++] = c; |
9049 | csum += c; | |
9050 | continue; | |
c906108c SS |
9051 | } |
9052 | } | |
9053 | } | |
9054 | ||
9055 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9056 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9057 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9058 | rather than timing out; this is used (in synchronous mode) to wait | |
9059 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9060 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9061 | don't have to change all the calls to getpkt to deal with the | |
9062 | return value, because at the moment I don't know what the right | |
23860348 | 9063 | thing to do it for those. */ |
c906108c | 9064 | void |
6d820c5c DJ |
9065 | getpkt (char **buf, |
9066 | long *sizeof_buf, | |
c2d11a7d | 9067 | int forever) |
d9fcf2fb | 9068 | { |
54887903 | 9069 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9070 | } |
9071 | ||
9072 | ||
9073 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9074 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9075 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9076 | rather than timing out; this is used (in synchronous mode) to wait | |
9077 | for a target that is is executing user code to stop. If FOREVER == | |
9078 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9079 | indication of this to the caller. Otherwise return the number of |
9080 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9081 | enough reason to return to the caller. *IS_NOTIF is an output |
9082 | boolean that indicates whether *BUF holds a notification or not | |
9083 | (a regular packet). */ | |
74531fed | 9084 | |
3172dc30 | 9085 | static int |
74531fed | 9086 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9087 | int expecting_notif, int *is_notif) |
c906108c | 9088 | { |
2d717e4f | 9089 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9090 | int c; |
9091 | int tries; | |
9092 | int timeout; | |
df4b58fe | 9093 | int val = -1; |
c906108c | 9094 | |
2d717e4f DJ |
9095 | /* We're reading a new response. Make sure we don't look at a |
9096 | previously cached response. */ | |
9097 | rs->cached_wait_status = 0; | |
9098 | ||
6d820c5c | 9099 | strcpy (*buf, "timeout"); |
c906108c SS |
9100 | |
9101 | if (forever) | |
74531fed PA |
9102 | timeout = watchdog > 0 ? watchdog : -1; |
9103 | else if (expecting_notif) | |
9104 | timeout = 0; /* There should already be a char in the buffer. If | |
9105 | not, bail out. */ | |
c906108c SS |
9106 | else |
9107 | timeout = remote_timeout; | |
9108 | ||
9109 | #define MAX_TRIES 3 | |
9110 | ||
74531fed PA |
9111 | /* Process any number of notifications, and then return when |
9112 | we get a packet. */ | |
9113 | for (;;) | |
c906108c | 9114 | { |
d9c43928 | 9115 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9116 | times. */ |
9117 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9118 | { |
74531fed PA |
9119 | /* This can loop forever if the remote side sends us |
9120 | characters continuously, but if it pauses, we'll get | |
9121 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9122 | we'll count that as a retry. | |
9123 | ||
9124 | Note that even when forever is set, we will only wait | |
9125 | forever prior to the start of a packet. After that, we | |
9126 | expect characters to arrive at a brisk pace. They should | |
9127 | show up within remote_timeout intervals. */ | |
9128 | do | |
9129 | c = readchar (timeout); | |
9130 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9131 | |
9132 | if (c == SERIAL_TIMEOUT) | |
9133 | { | |
74531fed PA |
9134 | if (expecting_notif) |
9135 | return -1; /* Don't complain, it's normal to not get | |
9136 | anything in this case. */ | |
9137 | ||
23860348 | 9138 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9139 | { |
78a095c3 | 9140 | remote_unpush_target (); |
598d3636 JK |
9141 | throw_error (TARGET_CLOSE_ERROR, |
9142 | _("Watchdog timeout has expired. " | |
9143 | "Target detached.")); | |
c906108c | 9144 | } |
c906108c | 9145 | if (remote_debug) |
0f71a2f6 | 9146 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9147 | } |
74531fed PA |
9148 | else |
9149 | { | |
9150 | /* We've found the start of a packet or notification. | |
9151 | Now collect the data. */ | |
9152 | val = read_frame (buf, sizeof_buf); | |
9153 | if (val >= 0) | |
9154 | break; | |
9155 | } | |
9156 | ||
c33e31fd | 9157 | remote_serial_write ("-", 1); |
c906108c | 9158 | } |
c906108c | 9159 | |
74531fed PA |
9160 | if (tries > MAX_TRIES) |
9161 | { | |
9162 | /* We have tried hard enough, and just can't receive the | |
9163 | packet/notification. Give up. */ | |
9164 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9165 | |
74531fed PA |
9166 | /* Skip the ack char if we're in no-ack mode. */ |
9167 | if (!rs->noack_mode) | |
c33e31fd | 9168 | remote_serial_write ("+", 1); |
74531fed PA |
9169 | return -1; |
9170 | } | |
c906108c | 9171 | |
74531fed PA |
9172 | /* If we got an ordinary packet, return that to our caller. */ |
9173 | if (c == '$') | |
c906108c SS |
9174 | { |
9175 | if (remote_debug) | |
43e526b9 | 9176 | { |
6f8976bf YQ |
9177 | std::string str |
9178 | = escape_buffer (*buf, | |
9179 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9180 | ||
9181 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9182 | str.c_str ()); | |
9183 | ||
9184 | if (str.length () > REMOTE_DEBUG_MAX_CHAR) | |
9185 | { | |
9186 | fprintf_unfiltered (gdb_stdlog, "[%zu bytes omitted]", | |
9187 | str.length () - REMOTE_DEBUG_MAX_CHAR); | |
9188 | } | |
6e5abd65 | 9189 | |
6f8976bf | 9190 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9191 | } |
a6f3e723 SL |
9192 | |
9193 | /* Skip the ack char if we're in no-ack mode. */ | |
9194 | if (!rs->noack_mode) | |
c33e31fd | 9195 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9196 | if (is_notif != NULL) |
9197 | *is_notif = 0; | |
0876f84a | 9198 | return val; |
c906108c SS |
9199 | } |
9200 | ||
74531fed PA |
9201 | /* If we got a notification, handle it, and go back to looking |
9202 | for a packet. */ | |
9203 | else | |
9204 | { | |
9205 | gdb_assert (c == '%'); | |
9206 | ||
9207 | if (remote_debug) | |
9208 | { | |
b3ced9ba | 9209 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9210 | |
6e5abd65 PA |
9211 | fprintf_unfiltered (gdb_stdlog, |
9212 | " Notification received: %s\n", | |
b3ced9ba | 9213 | str.c_str ()); |
74531fed | 9214 | } |
fee9eda9 YQ |
9215 | if (is_notif != NULL) |
9216 | *is_notif = 1; | |
c906108c | 9217 | |
5965e028 | 9218 | handle_notification (rs->notif_state, *buf); |
c906108c | 9219 | |
74531fed | 9220 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9221 | |
74531fed | 9222 | if (expecting_notif) |
fee9eda9 | 9223 | return val; |
74531fed PA |
9224 | } |
9225 | } | |
9226 | } | |
9227 | ||
9228 | static int | |
9229 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9230 | { | |
fee9eda9 | 9231 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9232 | } |
9233 | ||
9234 | static int | |
fee9eda9 YQ |
9235 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9236 | int *is_notif) | |
74531fed | 9237 | { |
fee9eda9 YQ |
9238 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9239 | is_notif); | |
c906108c | 9240 | } |
74531fed | 9241 | |
cbb8991c DB |
9242 | /* Check whether EVENT is a fork event for the process specified |
9243 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9244 | ||
9245 | static int | |
9246 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9247 | QUEUE_ITER (stop_reply_p) *iter, | |
9248 | stop_reply_p event, | |
9249 | void *data) | |
9250 | { | |
19ba03f4 | 9251 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9252 | int parent_pid = *(int *) param->input; |
9253 | ||
9254 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9255 | { | |
9256 | struct remote_state *rs = get_remote_state (); | |
9257 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9258 | int res; | |
9259 | ||
9260 | res = remote_vkill (child_pid, rs); | |
9261 | if (res != 0) | |
9262 | error (_("Can't kill fork child process %d"), child_pid); | |
9263 | } | |
9264 | ||
9265 | return 1; | |
9266 | } | |
9267 | ||
9268 | /* Kill any new fork children of process PID that haven't been | |
9269 | processed by follow_fork. */ | |
9270 | ||
9271 | static void | |
9272 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9273 | { | |
9274 | struct thread_info *thread; | |
9275 | struct notif_client *notif = ¬if_client_stop; | |
9276 | struct queue_iter_param param; | |
9277 | ||
9278 | /* Kill the fork child threads of any threads in process PID | |
9279 | that are stopped at a fork event. */ | |
9280 | ALL_NON_EXITED_THREADS (thread) | |
9281 | { | |
9282 | struct target_waitstatus *ws = &thread->pending_follow; | |
9283 | ||
9284 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9285 | { | |
9286 | struct remote_state *rs = get_remote_state (); | |
9287 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9288 | int res; | |
9289 | ||
9290 | res = remote_vkill (child_pid, rs); | |
9291 | if (res != 0) | |
9292 | error (_("Can't kill fork child process %d"), child_pid); | |
9293 | } | |
9294 | } | |
9295 | ||
9296 | /* Check for any pending fork events (not reported or processed yet) | |
9297 | in process PID and kill those fork child threads as well. */ | |
9298 | remote_notif_get_pending_events (notif); | |
9299 | param.input = &pid; | |
9300 | param.output = NULL; | |
9301 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9302 | kill_child_of_pending_fork, ¶m); | |
9303 | } | |
9304 | ||
c906108c | 9305 | \f |
8020350c DB |
9306 | /* Target hook to kill the current inferior. */ |
9307 | ||
c906108c | 9308 | static void |
7d85a9c0 | 9309 | remote_kill (struct target_ops *ops) |
43ff13b4 | 9310 | { |
8020350c DB |
9311 | int res = -1; |
9312 | int pid = ptid_get_pid (inferior_ptid); | |
9313 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9314 | |
8020350c | 9315 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9316 | { |
8020350c DB |
9317 | /* If we're stopped while forking and we haven't followed yet, |
9318 | kill the child task. We need to do this before killing the | |
9319 | parent task because if this is a vfork then the parent will | |
9320 | be sleeping. */ | |
9321 | kill_new_fork_children (pid, rs); | |
9322 | ||
9323 | res = remote_vkill (pid, rs); | |
9324 | if (res == 0) | |
0fdf84ca | 9325 | { |
bc1e6c81 | 9326 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9327 | return; |
9328 | } | |
8020350c | 9329 | } |
0fdf84ca | 9330 | |
8020350c DB |
9331 | /* If we are in 'target remote' mode and we are killing the only |
9332 | inferior, then we will tell gdbserver to exit and unpush the | |
9333 | target. */ | |
9334 | if (res == -1 && !remote_multi_process_p (rs) | |
9335 | && number_of_live_inferiors () == 1) | |
9336 | { | |
9337 | remote_kill_k (); | |
9338 | ||
9339 | /* We've killed the remote end, we get to mourn it. If we are | |
9340 | not in extended mode, mourning the inferior also unpushes | |
9341 | remote_ops from the target stack, which closes the remote | |
9342 | connection. */ | |
bc1e6c81 | 9343 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9344 | |
9345 | return; | |
0fdf84ca | 9346 | } |
43ff13b4 | 9347 | |
8020350c | 9348 | error (_("Can't kill process")); |
43ff13b4 JM |
9349 | } |
9350 | ||
8020350c DB |
9351 | /* Send a kill request to the target using the 'vKill' packet. */ |
9352 | ||
82f73884 PA |
9353 | static int |
9354 | remote_vkill (int pid, struct remote_state *rs) | |
9355 | { | |
4082afcc | 9356 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9357 | return -1; |
9358 | ||
9359 | /* Tell the remote target to detach. */ | |
bba74b36 | 9360 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9361 | putpkt (rs->buf); |
9362 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9363 | ||
4082afcc PA |
9364 | switch (packet_ok (rs->buf, |
9365 | &remote_protocol_packets[PACKET_vKill])) | |
9366 | { | |
9367 | case PACKET_OK: | |
9368 | return 0; | |
9369 | case PACKET_ERROR: | |
9370 | return 1; | |
9371 | case PACKET_UNKNOWN: | |
9372 | return -1; | |
9373 | default: | |
9374 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9375 | } | |
82f73884 PA |
9376 | } |
9377 | ||
8020350c DB |
9378 | /* Send a kill request to the target using the 'k' packet. */ |
9379 | ||
82f73884 | 9380 | static void |
8020350c | 9381 | remote_kill_k (void) |
82f73884 | 9382 | { |
8020350c DB |
9383 | /* Catch errors so the user can quit from gdb even when we |
9384 | aren't on speaking terms with the remote system. */ | |
9385 | TRY | |
82f73884 | 9386 | { |
82f73884 | 9387 | putpkt ("k"); |
82f73884 | 9388 | } |
8020350c DB |
9389 | CATCH (ex, RETURN_MASK_ERROR) |
9390 | { | |
9391 | if (ex.error == TARGET_CLOSE_ERROR) | |
9392 | { | |
9393 | /* If we got an (EOF) error that caused the target | |
9394 | to go away, then we're done, that's what we wanted. | |
9395 | "k" is susceptible to cause a premature EOF, given | |
9396 | that the remote server isn't actually required to | |
9397 | reply to "k", and it can happen that it doesn't | |
9398 | even get to reply ACK to the "k". */ | |
9399 | return; | |
9400 | } | |
82f73884 | 9401 | |
8020350c DB |
9402 | /* Otherwise, something went wrong. We didn't actually kill |
9403 | the target. Just propagate the exception, and let the | |
9404 | user or higher layers decide what to do. */ | |
9405 | throw_exception (ex); | |
9406 | } | |
9407 | END_CATCH | |
82f73884 PA |
9408 | } |
9409 | ||
c906108c | 9410 | static void |
20f796c9 | 9411 | remote_mourn (struct target_ops *target) |
c906108c | 9412 | { |
8020350c | 9413 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9414 | |
8020350c DB |
9415 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9416 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9417 | { | |
9418 | unpush_target (target); | |
c906108c | 9419 | |
8020350c DB |
9420 | /* remote_close takes care of doing most of the clean up. */ |
9421 | generic_mourn_inferior (); | |
9422 | return; | |
9423 | } | |
c906108c | 9424 | |
e24a49d8 PA |
9425 | /* In case we got here due to an error, but we're going to stay |
9426 | connected. */ | |
9427 | rs->waiting_for_stop_reply = 0; | |
9428 | ||
dc1981d7 PA |
9429 | /* If the current general thread belonged to the process we just |
9430 | detached from or has exited, the remote side current general | |
9431 | thread becomes undefined. Considering a case like this: | |
9432 | ||
9433 | - We just got here due to a detach. | |
9434 | - The process that we're detaching from happens to immediately | |
9435 | report a global breakpoint being hit in non-stop mode, in the | |
9436 | same thread we had selected before. | |
9437 | - GDB attaches to this process again. | |
9438 | - This event happens to be the next event we handle. | |
9439 | ||
9440 | GDB would consider that the current general thread didn't need to | |
9441 | be set on the stub side (with Hg), since for all it knew, | |
9442 | GENERAL_THREAD hadn't changed. | |
9443 | ||
9444 | Notice that although in all-stop mode, the remote server always | |
9445 | sets the current thread to the thread reporting the stop event, | |
9446 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9447 | not* change the current thread when reporting a breakpoint hit, | |
9448 | due to the decoupling of event reporting and event handling. | |
9449 | ||
9450 | To keep things simple, we always invalidate our notion of the | |
9451 | current thread. */ | |
47f8a51d | 9452 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9453 | |
8020350c | 9454 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9455 | generic_mourn_inferior (); |
9456 | ||
d729566a | 9457 | if (!have_inferiors ()) |
2d717e4f | 9458 | { |
82f73884 PA |
9459 | if (!remote_multi_process_p (rs)) |
9460 | { | |
9461 | /* Check whether the target is running now - some remote stubs | |
9462 | automatically restart after kill. */ | |
9463 | putpkt ("?"); | |
9464 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9465 | ||
9466 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9467 | { | |
3e43a32a MS |
9468 | /* Assume that the target has been restarted. Set |
9469 | inferior_ptid so that bits of core GDB realizes | |
9470 | there's something here, e.g., so that the user can | |
9471 | say "kill" again. */ | |
82f73884 PA |
9472 | inferior_ptid = magic_null_ptid; |
9473 | } | |
82f73884 | 9474 | } |
2d717e4f DJ |
9475 | } |
9476 | } | |
c906108c | 9477 | |
03583c20 | 9478 | static int |
2bfc0540 | 9479 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9480 | { |
4082afcc | 9481 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9482 | } |
9483 | ||
9484 | static void | |
9485 | extended_remote_disable_randomization (int val) | |
9486 | { | |
9487 | struct remote_state *rs = get_remote_state (); | |
9488 | char *reply; | |
9489 | ||
bba74b36 YQ |
9490 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9491 | val); | |
03583c20 UW |
9492 | putpkt (rs->buf); |
9493 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9494 | if (*reply == '\0') | |
9495 | error (_("Target does not support QDisableRandomization.")); | |
9496 | if (strcmp (reply, "OK") != 0) | |
9497 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9498 | } | |
9499 | ||
2d717e4f | 9500 | static int |
7c5ded6a | 9501 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9502 | { |
9503 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9504 | int len; |
94585166 | 9505 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9506 | |
2d717e4f DJ |
9507 | /* If the user has disabled vRun support, or we have detected that |
9508 | support is not available, do not try it. */ | |
4082afcc | 9509 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9510 | return -1; |
424163ea | 9511 | |
2d717e4f DJ |
9512 | strcpy (rs->buf, "vRun;"); |
9513 | len = strlen (rs->buf); | |
c906108c | 9514 | |
2d717e4f DJ |
9515 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9516 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9517 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9518 | strlen (remote_exec_file)); | |
2d717e4f | 9519 | |
7c5ded6a | 9520 | if (!args.empty ()) |
2d717e4f DJ |
9521 | { |
9522 | struct cleanup *back_to; | |
9523 | int i; | |
9524 | char **argv; | |
9525 | ||
7c5ded6a | 9526 | argv = gdb_buildargv (args.c_str ()); |
6e366df1 | 9527 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
9528 | for (i = 0; argv[i] != NULL; i++) |
9529 | { | |
9530 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9531 | error (_("Argument list too long for run packet")); | |
9532 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9533 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9534 | strlen (argv[i])); | |
2d717e4f DJ |
9535 | } |
9536 | do_cleanups (back_to); | |
9537 | } | |
9538 | ||
9539 | rs->buf[len++] = '\0'; | |
9540 | ||
9541 | putpkt (rs->buf); | |
9542 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9543 | ||
4082afcc | 9544 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9545 | { |
4082afcc | 9546 | case PACKET_OK: |
3405876a | 9547 | /* We have a wait response. All is well. */ |
2d717e4f | 9548 | return 0; |
4082afcc PA |
9549 | case PACKET_UNKNOWN: |
9550 | return -1; | |
9551 | case PACKET_ERROR: | |
2d717e4f DJ |
9552 | if (remote_exec_file[0] == '\0') |
9553 | error (_("Running the default executable on the remote target failed; " | |
9554 | "try \"set remote exec-file\"?")); | |
9555 | else | |
9556 | error (_("Running \"%s\" on the remote target failed"), | |
9557 | remote_exec_file); | |
4082afcc PA |
9558 | default: |
9559 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9560 | } |
c906108c SS |
9561 | } |
9562 | ||
2d717e4f DJ |
9563 | /* In the extended protocol we want to be able to do things like |
9564 | "run" and have them basically work as expected. So we need | |
9565 | a special create_inferior function. We support changing the | |
9566 | executable file and the command line arguments, but not the | |
9567 | environment. */ | |
9568 | ||
43ff13b4 | 9569 | static void |
77a19445 | 9570 | extended_remote_create_inferior (struct target_ops *ops, |
7c5ded6a SDJ |
9571 | const char *exec_file, |
9572 | const std::string &args, | |
77a19445 | 9573 | char **env, int from_tty) |
43ff13b4 | 9574 | { |
3405876a PA |
9575 | int run_worked; |
9576 | char *stop_reply; | |
9577 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9578 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9579 | |
43ff13b4 | 9580 | /* If running asynchronously, register the target file descriptor |
23860348 | 9581 | with the event loop. */ |
75c99385 | 9582 | if (target_can_async_p ()) |
6a3753b3 | 9583 | target_async (1); |
43ff13b4 | 9584 | |
03583c20 | 9585 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9586 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9587 | extended_remote_disable_randomization (disable_randomization); |
9588 | ||
aefd8b33 SDJ |
9589 | /* If startup-with-shell is on, we inform gdbserver to start the |
9590 | remote inferior using a shell. */ | |
9591 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9592 | { | |
9593 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9594 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9595 | putpkt (rs->buf); | |
9596 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9597 | if (strcmp (rs->buf, "OK") != 0) | |
9598 | error (_("\ | |
9599 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9600 | rs->buf); | |
9601 | } | |
9602 | ||
43ff13b4 | 9603 | /* Now restart the remote server. */ |
3405876a PA |
9604 | run_worked = extended_remote_run (args) != -1; |
9605 | if (!run_worked) | |
2d717e4f DJ |
9606 | { |
9607 | /* vRun was not supported. Fail if we need it to do what the | |
9608 | user requested. */ | |
9609 | if (remote_exec_file[0]) | |
9610 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9611 | if (!args.empty ()) |
2d717e4f | 9612 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9613 | |
2d717e4f DJ |
9614 | /* Fall back to "R". */ |
9615 | extended_remote_restart (); | |
9616 | } | |
424163ea | 9617 | |
6c95b8df PA |
9618 | if (!have_inferiors ()) |
9619 | { | |
9620 | /* Clean up from the last time we ran, before we mark the target | |
9621 | running again. This will mark breakpoints uninserted, and | |
9622 | get_offsets may insert breakpoints. */ | |
9623 | init_thread_list (); | |
9624 | init_wait_for_inferior (); | |
9625 | } | |
45280a52 | 9626 | |
3405876a PA |
9627 | /* vRun's success return is a stop reply. */ |
9628 | stop_reply = run_worked ? rs->buf : NULL; | |
9629 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9630 | |
2d717e4f DJ |
9631 | /* Get updated offsets, if the stub uses qOffsets. */ |
9632 | get_offsets (); | |
2d717e4f | 9633 | } |
c906108c | 9634 | \f |
c5aa993b | 9635 | |
b775012e LM |
9636 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9637 | the list of conditions (in agent expression bytecode format), if any, the | |
9638 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9639 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9640 | |
9641 | static int | |
9642 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9643 | struct bp_target_info *bp_tgt, char *buf, |
9644 | char *buf_end) | |
b775012e | 9645 | { |
3cde5c42 | 9646 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
9647 | return 0; |
9648 | ||
9649 | buf += strlen (buf); | |
bba74b36 | 9650 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9651 | buf++; |
9652 | ||
83621223 | 9653 | /* Send conditions to the target. */ |
d538e36d | 9654 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 9655 | { |
bba74b36 | 9656 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 9657 | buf += strlen (buf); |
3cde5c42 | 9658 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
9659 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9660 | *buf = '\0'; | |
9661 | } | |
b775012e LM |
9662 | return 0; |
9663 | } | |
9664 | ||
d3ce09f5 SS |
9665 | static void |
9666 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9667 | struct bp_target_info *bp_tgt, char *buf) | |
9668 | { | |
3cde5c42 | 9669 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
9670 | return; |
9671 | ||
9672 | buf += strlen (buf); | |
9673 | ||
9674 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9675 | buf += strlen (buf); | |
9676 | ||
9677 | /* Concatenate all the agent expressions that are commands into the | |
9678 | cmds parameter. */ | |
df97be55 | 9679 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
9680 | { |
9681 | sprintf (buf, "X%x,", aexpr->len); | |
9682 | buf += strlen (buf); | |
3cde5c42 | 9683 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
9684 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9685 | *buf = '\0'; | |
9686 | } | |
d3ce09f5 SS |
9687 | } |
9688 | ||
8181d85f DJ |
9689 | /* Insert a breakpoint. On targets that have software breakpoint |
9690 | support, we ask the remote target to do the work; on targets | |
9691 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9692 | |
9693 | static int | |
3db08215 MM |
9694 | remote_insert_breakpoint (struct target_ops *ops, |
9695 | struct gdbarch *gdbarch, | |
a6d9a66e | 9696 | struct bp_target_info *bp_tgt) |
c906108c | 9697 | { |
d471ea57 AC |
9698 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9699 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9700 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9701 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9702 | |
4082afcc | 9703 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9704 | { |
0d5ed153 | 9705 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9706 | struct remote_state *rs; |
bba74b36 | 9707 | char *p, *endbuf; |
7c0f6dcc | 9708 | int bpsize; |
4fff2411 | 9709 | |
28439a30 PA |
9710 | /* Make sure the remote is pointing at the right process, if |
9711 | necessary. */ | |
9712 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9713 | set_general_process (); | |
9714 | ||
4fff2411 JZ |
9715 | rs = get_remote_state (); |
9716 | p = rs->buf; | |
bba74b36 | 9717 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9718 | |
96baa820 JM |
9719 | *(p++) = 'Z'; |
9720 | *(p++) = '0'; | |
9721 | *(p++) = ','; | |
7c0f6dcc | 9722 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9723 | p += hexnumstr (p, addr); |
579c6ad9 | 9724 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9725 | |
efcc2da7 | 9726 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9727 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9728 | |
78eff0ec | 9729 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9730 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9731 | ||
6d820c5c DJ |
9732 | putpkt (rs->buf); |
9733 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9734 | |
6d820c5c | 9735 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9736 | { |
d471ea57 AC |
9737 | case PACKET_ERROR: |
9738 | return -1; | |
9739 | case PACKET_OK: | |
9740 | return 0; | |
9741 | case PACKET_UNKNOWN: | |
9742 | break; | |
96baa820 JM |
9743 | } |
9744 | } | |
c906108c | 9745 | |
0000e5cc PA |
9746 | /* If this breakpoint has target-side commands but this stub doesn't |
9747 | support Z0 packets, throw error. */ | |
3cde5c42 | 9748 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
9749 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
9750 | Target doesn't support breakpoints that have target side commands.")); | |
9751 | ||
3db08215 | 9752 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9753 | } |
9754 | ||
9755 | static int | |
3db08215 MM |
9756 | remote_remove_breakpoint (struct target_ops *ops, |
9757 | struct gdbarch *gdbarch, | |
73971819 PA |
9758 | struct bp_target_info *bp_tgt, |
9759 | enum remove_bp_reason reason) | |
c906108c | 9760 | { |
8181d85f | 9761 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9762 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9763 | |
4082afcc | 9764 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9765 | { |
6d820c5c | 9766 | char *p = rs->buf; |
bba74b36 | 9767 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 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 | ||
96baa820 JM |
9774 | *(p++) = 'z'; |
9775 | *(p++) = '0'; | |
9776 | *(p++) = ','; | |
9777 | ||
8181d85f DJ |
9778 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9779 | p += hexnumstr (p, addr); | |
579c6ad9 | 9780 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9781 | |
6d820c5c DJ |
9782 | putpkt (rs->buf); |
9783 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9784 | |
6d820c5c | 9785 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9786 | } |
9787 | ||
73971819 | 9788 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt, reason); |
c906108c SS |
9789 | } |
9790 | ||
f486487f | 9791 | static enum Z_packet_type |
d471ea57 AC |
9792 | watchpoint_to_Z_packet (int type) |
9793 | { | |
9794 | switch (type) | |
9795 | { | |
9796 | case hw_write: | |
bb858e6a | 9797 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9798 | break; |
9799 | case hw_read: | |
bb858e6a | 9800 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9801 | break; |
9802 | case hw_access: | |
bb858e6a | 9803 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9804 | break; |
9805 | default: | |
8e65ff28 | 9806 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9807 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9808 | } |
9809 | } | |
9810 | ||
3c3bea1c | 9811 | static int |
f486487f SM |
9812 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9813 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9814 | { |
d01949b6 | 9815 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9816 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9817 | char *p; |
d471ea57 | 9818 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9819 | |
4082afcc | 9820 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9821 | return 1; |
802188a7 | 9822 | |
28439a30 PA |
9823 | /* Make sure the remote is pointing at the right process, if |
9824 | necessary. */ | |
9825 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9826 | set_general_process (); | |
9827 | ||
bba74b36 | 9828 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9829 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9830 | addr = remote_address_masked (addr); |
9831 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9832 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9833 | |
6d820c5c DJ |
9834 | putpkt (rs->buf); |
9835 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9836 | |
6d820c5c | 9837 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9838 | { |
9839 | case PACKET_ERROR: | |
d471ea57 | 9840 | return -1; |
85d721b8 PA |
9841 | case PACKET_UNKNOWN: |
9842 | return 1; | |
d471ea57 AC |
9843 | case PACKET_OK: |
9844 | return 0; | |
9845 | } | |
8e65ff28 | 9846 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9847 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9848 | } |
9849 | ||
283002cf MR |
9850 | static int |
9851 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9852 | CORE_ADDR start, int length) | |
9853 | { | |
9854 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9855 | ||
9856 | return diff < length; | |
9857 | } | |
9858 | ||
d471ea57 | 9859 | |
3c3bea1c | 9860 | static int |
f486487f SM |
9861 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9862 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9863 | { |
d01949b6 | 9864 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9865 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9866 | char *p; |
d471ea57 AC |
9867 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9868 | ||
4082afcc | 9869 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9870 | return -1; |
802188a7 | 9871 | |
28439a30 PA |
9872 | /* Make sure the remote is pointing at the right process, if |
9873 | necessary. */ | |
9874 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9875 | set_general_process (); | |
9876 | ||
bba74b36 | 9877 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9878 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9879 | addr = remote_address_masked (addr); |
9880 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9881 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9882 | putpkt (rs->buf); |
9883 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9884 | |
6d820c5c | 9885 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9886 | { |
9887 | case PACKET_ERROR: | |
9888 | case PACKET_UNKNOWN: | |
9889 | return -1; | |
9890 | case PACKET_OK: | |
9891 | return 0; | |
9892 | } | |
8e65ff28 | 9893 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9894 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9895 | } |
9896 | ||
3c3bea1c | 9897 | |
501eef12 | 9898 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9899 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9900 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9901 | |
480a3f21 | 9902 | static int |
31568a15 TT |
9903 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9904 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9905 | { |
9906 | if (remote_hw_watchpoint_length_limit == 0) | |
9907 | return 0; | |
9908 | else if (remote_hw_watchpoint_length_limit < 0) | |
9909 | return 1; | |
9910 | else if (len <= remote_hw_watchpoint_length_limit) | |
9911 | return 1; | |
9912 | else | |
9913 | return 0; | |
9914 | } | |
9915 | ||
b9362cc7 | 9916 | static int |
5461485a | 9917 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9918 | enum bptype type, int cnt, int ot) |
96baa820 | 9919 | { |
3c3bea1c GS |
9920 | if (type == bp_hardware_breakpoint) |
9921 | { | |
9922 | if (remote_hw_breakpoint_limit == 0) | |
9923 | return 0; | |
501eef12 AC |
9924 | else if (remote_hw_breakpoint_limit < 0) |
9925 | return 1; | |
3c3bea1c GS |
9926 | else if (cnt <= remote_hw_breakpoint_limit) |
9927 | return 1; | |
9928 | } | |
9929 | else | |
9930 | { | |
9931 | if (remote_hw_watchpoint_limit == 0) | |
9932 | return 0; | |
501eef12 AC |
9933 | else if (remote_hw_watchpoint_limit < 0) |
9934 | return 1; | |
3c3bea1c GS |
9935 | else if (ot) |
9936 | return -1; | |
9937 | else if (cnt <= remote_hw_watchpoint_limit) | |
9938 | return 1; | |
9939 | } | |
9940 | return -1; | |
9941 | } | |
9942 | ||
f7e6eed5 PA |
9943 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9944 | ||
9945 | static int | |
9946 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9947 | { | |
799a2abe | 9948 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9949 | |
799a2abe PA |
9950 | return (thread->priv != NULL |
9951 | && thread->priv->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT); | |
f7e6eed5 PA |
9952 | } |
9953 | ||
9954 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9955 | remote. */ | |
9956 | ||
9957 | static int | |
9958 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9959 | { | |
f7e6eed5 PA |
9960 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
9961 | } | |
9962 | ||
9963 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
9964 | ||
9965 | static int | |
9966 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9967 | { | |
799a2abe | 9968 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9969 | |
799a2abe PA |
9970 | return (thread->priv != NULL |
9971 | && thread->priv->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT); | |
f7e6eed5 PA |
9972 | } |
9973 | ||
9974 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
9975 | remote. */ | |
9976 | ||
9977 | static int | |
9978 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9979 | { | |
f7e6eed5 PA |
9980 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
9981 | } | |
9982 | ||
b9362cc7 | 9983 | static int |
6a109b6b | 9984 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 9985 | { |
799a2abe | 9986 | struct thread_info *thread = inferior_thread (); |
ee154bee | 9987 | |
799a2abe PA |
9988 | return (thread->priv != NULL |
9989 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT); | |
3c3bea1c GS |
9990 | } |
9991 | ||
4aa7a7f5 JJ |
9992 | static int |
9993 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 9994 | { |
799a2abe | 9995 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 9996 | |
799a2abe PA |
9997 | if (thread->priv != NULL |
9998 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT) | |
4aa7a7f5 | 9999 | { |
799a2abe PA |
10000 | *addr_p = thread->priv->watch_data_address; |
10001 | return 1; | |
4aa7a7f5 JJ |
10002 | } |
10003 | ||
799a2abe | 10004 | return 0; |
3c3bea1c GS |
10005 | } |
10006 | ||
10007 | ||
10008 | static int | |
23a26771 | 10009 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10010 | struct bp_target_info *bp_tgt) |
3c3bea1c | 10011 | { |
0d5ed153 | 10012 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10013 | struct remote_state *rs; |
bba74b36 | 10014 | char *p, *endbuf; |
dd61ec5c | 10015 | char *message; |
3c3bea1c | 10016 | |
4082afcc | 10017 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10018 | return -1; |
2bc416ba | 10019 | |
28439a30 PA |
10020 | /* Make sure the remote is pointing at the right process, if |
10021 | necessary. */ | |
10022 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10023 | set_general_process (); | |
10024 | ||
4fff2411 JZ |
10025 | rs = get_remote_state (); |
10026 | p = rs->buf; | |
bba74b36 | 10027 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10028 | |
96baa820 JM |
10029 | *(p++) = 'Z'; |
10030 | *(p++) = '1'; | |
10031 | *(p++) = ','; | |
802188a7 | 10032 | |
0d5ed153 | 10033 | addr = remote_address_masked (addr); |
96baa820 | 10034 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10035 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10036 | |
efcc2da7 | 10037 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 10038 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10039 | |
78eff0ec | 10040 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
10041 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10042 | ||
6d820c5c DJ |
10043 | putpkt (rs->buf); |
10044 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10045 | |
6d820c5c | 10046 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10047 | { |
10048 | case PACKET_ERROR: | |
dd61ec5c MW |
10049 | if (rs->buf[1] == '.') |
10050 | { | |
10051 | message = strchr (rs->buf + 2, '.'); | |
10052 | if (message) | |
0316657e | 10053 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10054 | } |
10055 | return -1; | |
d471ea57 AC |
10056 | case PACKET_UNKNOWN: |
10057 | return -1; | |
10058 | case PACKET_OK: | |
10059 | return 0; | |
10060 | } | |
8e65ff28 | 10061 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10062 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10063 | } |
10064 | ||
d471ea57 | 10065 | |
802188a7 | 10066 | static int |
a64dc96c | 10067 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10068 | struct bp_target_info *bp_tgt) |
96baa820 | 10069 | { |
8181d85f | 10070 | CORE_ADDR addr; |
d01949b6 | 10071 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10072 | char *p = rs->buf; |
bba74b36 | 10073 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10074 | |
4082afcc | 10075 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10076 | return -1; |
802188a7 | 10077 | |
28439a30 PA |
10078 | /* Make sure the remote is pointing at the right process, if |
10079 | necessary. */ | |
10080 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10081 | set_general_process (); | |
10082 | ||
96baa820 JM |
10083 | *(p++) = 'z'; |
10084 | *(p++) = '1'; | |
10085 | *(p++) = ','; | |
802188a7 | 10086 | |
8181d85f | 10087 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10088 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10089 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10090 | |
6d820c5c DJ |
10091 | putpkt (rs->buf); |
10092 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10093 | |
6d820c5c | 10094 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10095 | { |
10096 | case PACKET_ERROR: | |
10097 | case PACKET_UNKNOWN: | |
10098 | return -1; | |
10099 | case PACKET_OK: | |
10100 | return 0; | |
10101 | } | |
8e65ff28 | 10102 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10103 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10104 | } |
96baa820 | 10105 | |
4a5e7a5b PA |
10106 | /* Verify memory using the "qCRC:" request. */ |
10107 | ||
10108 | static int | |
10109 | remote_verify_memory (struct target_ops *ops, | |
10110 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
10111 | { | |
10112 | struct remote_state *rs = get_remote_state (); | |
10113 | unsigned long host_crc, target_crc; | |
10114 | char *tmp; | |
10115 | ||
936d2992 PA |
10116 | /* It doesn't make sense to use qCRC if the remote target is |
10117 | connected but not running. */ | |
10118 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10119 | { | |
10120 | enum packet_result result; | |
28439a30 | 10121 | |
936d2992 PA |
10122 | /* Make sure the remote is pointing at the right process. */ |
10123 | set_general_process (); | |
4a5e7a5b | 10124 | |
936d2992 PA |
10125 | /* FIXME: assumes lma can fit into long. */ |
10126 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10127 | (long) lma, (long) size); | |
10128 | putpkt (rs->buf); | |
4a5e7a5b | 10129 | |
936d2992 PA |
10130 | /* Be clever; compute the host_crc before waiting for target |
10131 | reply. */ | |
10132 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10133 | ||
10134 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10135 | |
936d2992 PA |
10136 | result = packet_ok (rs->buf, |
10137 | &remote_protocol_packets[PACKET_qCRC]); | |
10138 | if (result == PACKET_ERROR) | |
10139 | return -1; | |
10140 | else if (result == PACKET_OK) | |
10141 | { | |
10142 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10143 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10144 | |
936d2992 PA |
10145 | return (host_crc == target_crc); |
10146 | } | |
10147 | } | |
4a5e7a5b | 10148 | |
936d2992 | 10149 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
10150 | } |
10151 | ||
c906108c SS |
10152 | /* compare-sections command |
10153 | ||
10154 | With no arguments, compares each loadable section in the exec bfd | |
10155 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10156 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10157 | |
c906108c | 10158 | static void |
fba45db2 | 10159 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
10160 | { |
10161 | asection *s; | |
c906108c | 10162 | struct cleanup *old_chain; |
948f8e3d | 10163 | gdb_byte *sectdata; |
ce359b09 | 10164 | const char *sectname; |
c906108c SS |
10165 | bfd_size_type size; |
10166 | bfd_vma lma; | |
10167 | int matched = 0; | |
10168 | int mismatched = 0; | |
4a5e7a5b | 10169 | int res; |
95cf3b38 | 10170 | int read_only = 0; |
c906108c SS |
10171 | |
10172 | if (!exec_bfd) | |
8a3fe4f8 | 10173 | error (_("command cannot be used without an exec file")); |
c906108c | 10174 | |
28439a30 PA |
10175 | /* Make sure the remote is pointing at the right process. */ |
10176 | set_general_process (); | |
10177 | ||
95cf3b38 DT |
10178 | if (args != NULL && strcmp (args, "-r") == 0) |
10179 | { | |
10180 | read_only = 1; | |
10181 | args = NULL; | |
10182 | } | |
10183 | ||
c5aa993b | 10184 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10185 | { |
10186 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10187 | continue; /* Skip non-loadable section. */ |
c906108c | 10188 | |
95cf3b38 DT |
10189 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10190 | continue; /* Skip writeable sections */ | |
10191 | ||
2c500098 | 10192 | size = bfd_get_section_size (s); |
c906108c | 10193 | if (size == 0) |
0df8b418 | 10194 | continue; /* Skip zero-length section. */ |
c906108c | 10195 | |
ce359b09 | 10196 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10197 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10198 | continue; /* Not the section selected by user. */ |
c906108c | 10199 | |
0df8b418 | 10200 | matched = 1; /* Do this section. */ |
c906108c | 10201 | lma = s->lma; |
c906108c | 10202 | |
224c3ddb | 10203 | sectdata = (gdb_byte *) xmalloc (size); |
b8c9b27d | 10204 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 10205 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 10206 | |
4a5e7a5b PA |
10207 | res = target_verify_memory (sectdata, lma, size); |
10208 | ||
10209 | if (res == -1) | |
5af949e3 | 10210 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10211 | paddress (target_gdbarch (), lma), |
10212 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10213 | |
5af949e3 | 10214 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10215 | paddress (target_gdbarch (), lma), |
10216 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10217 | if (res) |
c906108c SS |
10218 | printf_filtered ("matched.\n"); |
10219 | else | |
c5aa993b JM |
10220 | { |
10221 | printf_filtered ("MIS-MATCHED!\n"); | |
10222 | mismatched++; | |
10223 | } | |
c906108c SS |
10224 | |
10225 | do_cleanups (old_chain); | |
10226 | } | |
10227 | if (mismatched > 0) | |
936d2992 | 10228 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10229 | the loaded file\n")); |
c906108c | 10230 | if (args && !matched) |
a3f17187 | 10231 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10232 | } |
10233 | ||
0e7f50da UW |
10234 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10235 | into remote target. The number of bytes written to the remote | |
10236 | target is returned, or -1 for error. */ | |
10237 | ||
9b409511 | 10238 | static enum target_xfer_status |
0e7f50da UW |
10239 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
10240 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 10241 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10242 | struct packet_config *packet) |
10243 | { | |
10244 | int i, buf_len; | |
10245 | ULONGEST n; | |
0e7f50da UW |
10246 | struct remote_state *rs = get_remote_state (); |
10247 | int max_size = get_memory_write_packet_size (); | |
10248 | ||
10249 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 10250 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10251 | |
10252 | /* Insert header. */ | |
10253 | i = snprintf (rs->buf, max_size, | |
10254 | "qXfer:%s:write:%s:%s:", | |
10255 | object_name, annex ? annex : "", | |
10256 | phex_nz (offset, sizeof offset)); | |
10257 | max_size -= (i + 1); | |
10258 | ||
10259 | /* Escape as much data as fits into rs->buf. */ | |
10260 | buf_len = remote_escape_output | |
124e13d9 | 10261 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10262 | |
10263 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10264 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10265 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10266 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10267 | |
10268 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10269 | |
10270 | *xfered_len = n; | |
10271 | return TARGET_XFER_OK; | |
0e7f50da UW |
10272 | } |
10273 | ||
0876f84a DJ |
10274 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10275 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10276 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10277 | The number of bytes read may be less than LEN without indicating an | |
10278 | EOF. PACKET is checked and updated to indicate whether the remote | |
10279 | target supports this object. */ | |
10280 | ||
9b409511 | 10281 | static enum target_xfer_status |
0876f84a DJ |
10282 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
10283 | const char *annex, | |
10284 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10285 | ULONGEST *xfered_len, |
0876f84a DJ |
10286 | struct packet_config *packet) |
10287 | { | |
0876f84a | 10288 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10289 | LONGEST i, n, packet_len; |
10290 | ||
10291 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 10292 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10293 | |
10294 | /* Check whether we've cached an end-of-object packet that matches | |
10295 | this request. */ | |
8e88304f | 10296 | if (rs->finished_object) |
0876f84a | 10297 | { |
8e88304f TT |
10298 | if (strcmp (object_name, rs->finished_object) == 0 |
10299 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10300 | && offset == rs->finished_offset) | |
9b409511 YQ |
10301 | return TARGET_XFER_EOF; |
10302 | ||
0876f84a DJ |
10303 | |
10304 | /* Otherwise, we're now reading something different. Discard | |
10305 | the cache. */ | |
8e88304f TT |
10306 | xfree (rs->finished_object); |
10307 | xfree (rs->finished_annex); | |
10308 | rs->finished_object = NULL; | |
10309 | rs->finished_annex = NULL; | |
0876f84a DJ |
10310 | } |
10311 | ||
10312 | /* Request only enough to fit in a single packet. The actual data | |
10313 | may not, since we don't know how much of it will need to be escaped; | |
10314 | the target is free to respond with slightly less data. We subtract | |
10315 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10316 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10317 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10318 | object_name, annex ? annex : "", | |
10319 | phex_nz (offset, sizeof offset), | |
10320 | phex_nz (n, sizeof n)); | |
10321 | i = putpkt (rs->buf); | |
10322 | if (i < 0) | |
2ed4b548 | 10323 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10324 | |
10325 | rs->buf[0] = '\0'; | |
10326 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10327 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10328 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10329 | |
10330 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10331 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10332 | ||
10333 | /* 'm' means there is (or at least might be) more data after this | |
10334 | batch. That does not make sense unless there's at least one byte | |
10335 | of data in this reply. */ | |
10336 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10337 | error (_("Remote qXfer reply contained no data.")); | |
10338 | ||
10339 | /* Got some data. */ | |
bc20a4af PA |
10340 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10341 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10342 | |
10343 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10344 | or possibly empty. If we have the final block of a non-empty |
10345 | object, record this fact to bypass a subsequent partial read. */ | |
10346 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10347 | { |
8e88304f TT |
10348 | rs->finished_object = xstrdup (object_name); |
10349 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10350 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10351 | } |
10352 | ||
9b409511 YQ |
10353 | if (i == 0) |
10354 | return TARGET_XFER_EOF; | |
10355 | else | |
10356 | { | |
10357 | *xfered_len = i; | |
10358 | return TARGET_XFER_OK; | |
10359 | } | |
0876f84a DJ |
10360 | } |
10361 | ||
9b409511 | 10362 | static enum target_xfer_status |
4b8a223f | 10363 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 10364 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
10365 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
10366 | ULONGEST *xfered_len) | |
c906108c | 10367 | { |
82f73884 | 10368 | struct remote_state *rs; |
c906108c | 10369 | int i; |
6d820c5c | 10370 | char *p2; |
1e3ff5ad | 10371 | char query_type; |
124e13d9 | 10372 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10373 | |
e6e4e701 | 10374 | set_remote_traceframe (); |
82f73884 PA |
10375 | set_general_thread (inferior_ptid); |
10376 | ||
10377 | rs = get_remote_state (); | |
10378 | ||
b2182ed2 | 10379 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10380 | if (object == TARGET_OBJECT_MEMORY) |
10381 | { | |
2d717e4f DJ |
10382 | /* If the remote target is connected but not running, we should |
10383 | pass this request down to a lower stratum (e.g. the executable | |
10384 | file). */ | |
10385 | if (!target_has_execution) | |
9b409511 | 10386 | return TARGET_XFER_EOF; |
2d717e4f | 10387 | |
21e3b9b9 | 10388 | if (writebuf != NULL) |
124e13d9 SM |
10389 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10390 | xfered_len); | |
21e3b9b9 | 10391 | else |
124e13d9 SM |
10392 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
10393 | xfered_len); | |
21e3b9b9 DJ |
10394 | } |
10395 | ||
0df8b418 | 10396 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10397 | if (object == TARGET_OBJECT_SPU) |
10398 | { | |
10399 | if (readbuf) | |
10400 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
10401 | xfered_len, &remote_protocol_packets |
10402 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
10403 | else |
10404 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
10405 | xfered_len, &remote_protocol_packets |
10406 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10407 | } |
10408 | ||
4aa995e1 PA |
10409 | /* Handle extra signal info using qxfer packets. */ |
10410 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10411 | { | |
10412 | if (readbuf) | |
10413 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10414 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10415 | [PACKET_qXfer_siginfo_read]); |
10416 | else | |
3e43a32a | 10417 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10418 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10419 | &remote_protocol_packets |
10420 | [PACKET_qXfer_siginfo_write]); | |
10421 | } | |
10422 | ||
0fb4aa4b PA |
10423 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10424 | { | |
10425 | if (readbuf) | |
3e43a32a | 10426 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10427 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10428 | &remote_protocol_packets |
10429 | [PACKET_qXfer_statictrace_read]); | |
10430 | else | |
2ed4b548 | 10431 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10432 | } |
10433 | ||
a76d924d DJ |
10434 | /* Only handle flash writes. */ |
10435 | if (writebuf != NULL) | |
10436 | { | |
a76d924d DJ |
10437 | switch (object) |
10438 | { | |
10439 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10440 | return remote_flash_write (ops, offset, len, xfered_len, |
10441 | writebuf); | |
a76d924d DJ |
10442 | |
10443 | default: | |
2ed4b548 | 10444 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10445 | } |
10446 | } | |
4b8a223f | 10447 | |
1e3ff5ad AC |
10448 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10449 | objects!!! Instead specify new query packets. */ | |
10450 | switch (object) | |
c906108c | 10451 | { |
1e3ff5ad AC |
10452 | case TARGET_OBJECT_AVR: |
10453 | query_type = 'R'; | |
10454 | break; | |
802188a7 RM |
10455 | |
10456 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10457 | gdb_assert (annex == NULL); |
10458 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10459 | xfered_len, |
0876f84a | 10460 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10461 | |
23181151 DJ |
10462 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10463 | return remote_read_qxfer | |
9b409511 | 10464 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10465 | &remote_protocol_packets[PACKET_qXfer_features]); |
10466 | ||
cfa9d6d9 DJ |
10467 | case TARGET_OBJECT_LIBRARIES: |
10468 | return remote_read_qxfer | |
9b409511 | 10469 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10470 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10471 | ||
2268b414 JK |
10472 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10473 | return remote_read_qxfer | |
9b409511 | 10474 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10475 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10476 | ||
fd79ecee DJ |
10477 | case TARGET_OBJECT_MEMORY_MAP: |
10478 | gdb_assert (annex == NULL); | |
10479 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10480 | xfered_len, |
fd79ecee DJ |
10481 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10482 | ||
07e059b5 VP |
10483 | case TARGET_OBJECT_OSDATA: |
10484 | /* Should only get here if we're connected. */ | |
5d93a237 | 10485 | gdb_assert (rs->remote_desc); |
07e059b5 | 10486 | return remote_read_qxfer |
9b409511 | 10487 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10488 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10489 | ||
dc146f7c VP |
10490 | case TARGET_OBJECT_THREADS: |
10491 | gdb_assert (annex == NULL); | |
10492 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10493 | xfered_len, |
dc146f7c VP |
10494 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10495 | ||
b3b9301e PA |
10496 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10497 | gdb_assert (annex == NULL); | |
10498 | return remote_read_qxfer | |
9b409511 | 10499 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10500 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10501 | |
10502 | case TARGET_OBJECT_FDPIC: | |
10503 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10504 | xfered_len, |
78d85199 | 10505 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10506 | |
10507 | case TARGET_OBJECT_OPENVMS_UIB: | |
10508 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10509 | xfered_len, |
169081d0 TG |
10510 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10511 | ||
9accd112 MM |
10512 | case TARGET_OBJECT_BTRACE: |
10513 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10514 | xfered_len, |
9accd112 MM |
10515 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10516 | ||
f4abbc16 MM |
10517 | case TARGET_OBJECT_BTRACE_CONF: |
10518 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10519 | len, xfered_len, | |
10520 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10521 | ||
c78fa86a GB |
10522 | case TARGET_OBJECT_EXEC_FILE: |
10523 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10524 | len, xfered_len, | |
10525 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10526 | ||
1e3ff5ad | 10527 | default: |
2ed4b548 | 10528 | return TARGET_XFER_E_IO; |
c906108c SS |
10529 | } |
10530 | ||
0df8b418 | 10531 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10532 | large enough let the caller deal with it. */ |
ea9c271d | 10533 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10534 | return TARGET_XFER_E_IO; |
ea9c271d | 10535 | len = get_remote_packet_size (); |
1e3ff5ad | 10536 | |
23860348 | 10537 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10538 | if (!rs->remote_desc) |
8a3fe4f8 | 10539 | error (_("remote query is only available after target open")); |
c906108c | 10540 | |
1e3ff5ad | 10541 | gdb_assert (annex != NULL); |
4b8a223f | 10542 | gdb_assert (readbuf != NULL); |
c906108c | 10543 | |
6d820c5c | 10544 | p2 = rs->buf; |
c906108c SS |
10545 | *p2++ = 'q'; |
10546 | *p2++ = query_type; | |
10547 | ||
23860348 MS |
10548 | /* We used one buffer char for the remote protocol q command and |
10549 | another for the query type. As the remote protocol encapsulation | |
10550 | uses 4 chars plus one extra in case we are debugging | |
10551 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10552 | string. */ | |
c906108c | 10553 | i = 0; |
ea9c271d | 10554 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10555 | { |
1e3ff5ad AC |
10556 | /* Bad caller may have sent forbidden characters. */ |
10557 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10558 | *p2++ = annex[i]; | |
c906108c SS |
10559 | i++; |
10560 | } | |
1e3ff5ad AC |
10561 | *p2 = '\0'; |
10562 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10563 | |
6d820c5c | 10564 | i = putpkt (rs->buf); |
c5aa993b | 10565 | if (i < 0) |
2ed4b548 | 10566 | return TARGET_XFER_E_IO; |
c906108c | 10567 | |
6d820c5c DJ |
10568 | getpkt (&rs->buf, &rs->buf_size, 0); |
10569 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10570 | |
9b409511 YQ |
10571 | *xfered_len = strlen ((char *) readbuf); |
10572 | return TARGET_XFER_OK; | |
c906108c SS |
10573 | } |
10574 | ||
09c98b44 DB |
10575 | /* Implementation of to_get_memory_xfer_limit. */ |
10576 | ||
10577 | static ULONGEST | |
10578 | remote_get_memory_xfer_limit (struct target_ops *ops) | |
10579 | { | |
10580 | return get_memory_write_packet_size (); | |
10581 | } | |
10582 | ||
08388c79 DE |
10583 | static int |
10584 | remote_search_memory (struct target_ops* ops, | |
10585 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10586 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10587 | CORE_ADDR *found_addrp) | |
10588 | { | |
f5656ead | 10589 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10590 | struct remote_state *rs = get_remote_state (); |
10591 | int max_size = get_memory_write_packet_size (); | |
10592 | struct packet_config *packet = | |
10593 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10594 | /* Number of packet bytes used to encode the pattern; |
10595 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10596 | int escaped_pattern_len; |
0df8b418 | 10597 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10598 | int used_pattern_len; |
10599 | int i; | |
10600 | int found; | |
10601 | ULONGEST found_addr; | |
10602 | ||
10603 | /* Don't go to the target if we don't have to. | |
10604 | This is done before checking packet->support to avoid the possibility that | |
10605 | a success for this edge case means the facility works in general. */ | |
10606 | if (pattern_len > search_space_len) | |
10607 | return 0; | |
10608 | if (pattern_len == 0) | |
10609 | { | |
10610 | *found_addrp = start_addr; | |
10611 | return 1; | |
10612 | } | |
10613 | ||
10614 | /* If we already know the packet isn't supported, fall back to the simple | |
10615 | way of searching memory. */ | |
10616 | ||
4082afcc | 10617 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10618 | { |
10619 | /* Target doesn't provided special support, fall back and use the | |
10620 | standard support (copy memory and do the search here). */ | |
10621 | return simple_search_memory (ops, start_addr, search_space_len, | |
10622 | pattern, pattern_len, found_addrp); | |
10623 | } | |
10624 | ||
28439a30 PA |
10625 | /* Make sure the remote is pointing at the right process. */ |
10626 | set_general_process (); | |
10627 | ||
08388c79 DE |
10628 | /* Insert header. */ |
10629 | i = snprintf (rs->buf, max_size, | |
10630 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10631 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10632 | phex_nz (search_space_len, sizeof (search_space_len))); |
10633 | max_size -= (i + 1); | |
10634 | ||
10635 | /* Escape as much data as fits into rs->buf. */ | |
10636 | escaped_pattern_len = | |
124e13d9 | 10637 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10638 | &used_pattern_len, max_size); |
10639 | ||
10640 | /* Bail if the pattern is too large. */ | |
10641 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10642 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10643 | |
10644 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10645 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10646 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10647 | { | |
10648 | /* The request may not have worked because the command is not | |
10649 | supported. If so, fall back to the simple way. */ | |
10650 | if (packet->support == PACKET_DISABLE) | |
10651 | { | |
10652 | return simple_search_memory (ops, start_addr, search_space_len, | |
10653 | pattern, pattern_len, found_addrp); | |
10654 | } | |
10655 | return -1; | |
10656 | } | |
10657 | ||
10658 | if (rs->buf[0] == '0') | |
10659 | found = 0; | |
10660 | else if (rs->buf[0] == '1') | |
10661 | { | |
10662 | found = 1; | |
10663 | if (rs->buf[1] != ',') | |
10e0fa18 | 10664 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10665 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10666 | *found_addrp = found_addr; | |
10667 | } | |
10668 | else | |
10e0fa18 | 10669 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10670 | |
10671 | return found; | |
10672 | } | |
10673 | ||
96baa820 | 10674 | static void |
a30bf1f1 | 10675 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10676 | struct ui_file *outbuf) |
96baa820 | 10677 | { |
d01949b6 | 10678 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10679 | char *p = rs->buf; |
96baa820 | 10680 | |
5d93a237 | 10681 | if (!rs->remote_desc) |
8a3fe4f8 | 10682 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10683 | |
23860348 | 10684 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10685 | if (command == NULL) |
10686 | command = ""; | |
10687 | ||
23860348 | 10688 | /* The query prefix. */ |
2e9f7625 DJ |
10689 | strcpy (rs->buf, "qRcmd,"); |
10690 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10691 | |
3e43a32a MS |
10692 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10693 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10694 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10695 | |
23860348 | 10696 | /* Encode the actual command. */ |
a30bf1f1 | 10697 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10698 | |
6d820c5c | 10699 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10700 | error (_("Communication problem with target.")); |
96baa820 JM |
10701 | |
10702 | /* get/display the response */ | |
10703 | while (1) | |
10704 | { | |
2e9f7625 DJ |
10705 | char *buf; |
10706 | ||
00bf0b85 | 10707 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10708 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10709 | rs->buf[0] = '\0'; |
5b37825d PW |
10710 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10711 | { | |
10712 | /* Timeout. Continue to (try to) read responses. | |
10713 | This is better than stopping with an error, assuming the stub | |
10714 | is still executing the (long) monitor command. | |
10715 | If needed, the user can interrupt gdb using C-c, obtaining | |
10716 | an effect similar to stop on timeout. */ | |
10717 | continue; | |
10718 | } | |
2e9f7625 | 10719 | buf = rs->buf; |
96baa820 | 10720 | if (buf[0] == '\0') |
8a3fe4f8 | 10721 | error (_("Target does not support this command.")); |
96baa820 JM |
10722 | if (buf[0] == 'O' && buf[1] != 'K') |
10723 | { | |
23860348 | 10724 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10725 | continue; |
10726 | } | |
10727 | if (strcmp (buf, "OK") == 0) | |
10728 | break; | |
7be570e7 JM |
10729 | if (strlen (buf) == 3 && buf[0] == 'E' |
10730 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10731 | { | |
8a3fe4f8 | 10732 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10733 | } |
96baa820 JM |
10734 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10735 | { | |
10736 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10737 | |
96baa820 JM |
10738 | fputc_unfiltered (c, outbuf); |
10739 | } | |
10740 | break; | |
10741 | } | |
10742 | } | |
10743 | ||
fd79ecee DJ |
10744 | static VEC(mem_region_s) * |
10745 | remote_memory_map (struct target_ops *ops) | |
10746 | { | |
10747 | VEC(mem_region_s) *result = NULL; | |
10748 | char *text = target_read_stralloc (¤t_target, | |
10749 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
10750 | ||
10751 | if (text) | |
10752 | { | |
10753 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 10754 | |
fd79ecee DJ |
10755 | result = parse_memory_map (text); |
10756 | do_cleanups (back_to); | |
10757 | } | |
10758 | ||
10759 | return result; | |
10760 | } | |
10761 | ||
c906108c | 10762 | static void |
fba45db2 | 10763 | packet_command (char *args, int from_tty) |
c906108c | 10764 | { |
d01949b6 | 10765 | struct remote_state *rs = get_remote_state (); |
c906108c | 10766 | |
5d93a237 | 10767 | if (!rs->remote_desc) |
8a3fe4f8 | 10768 | error (_("command can only be used with remote target")); |
c906108c | 10769 | |
c5aa993b | 10770 | if (!args) |
8a3fe4f8 | 10771 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10772 | |
10773 | puts_filtered ("sending: "); | |
10774 | print_packet (args); | |
10775 | puts_filtered ("\n"); | |
10776 | putpkt (args); | |
10777 | ||
6d820c5c | 10778 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10779 | puts_filtered ("received: "); |
6d820c5c | 10780 | print_packet (rs->buf); |
c906108c SS |
10781 | puts_filtered ("\n"); |
10782 | } | |
10783 | ||
10784 | #if 0 | |
23860348 | 10785 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10786 | |
a14ed312 | 10787 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10788 | |
a14ed312 | 10789 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10790 | |
a14ed312 | 10791 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10792 | |
a14ed312 | 10793 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10794 | |
23860348 | 10795 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10796 | |
a14ed312 | 10797 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10798 | |
23860348 | 10799 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10800 | |
a14ed312 | 10801 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10802 | |
a14ed312 | 10803 | static void init_remote_threadtests (void); |
c906108c | 10804 | |
23860348 | 10805 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10806 | |
10807 | static void | |
fba45db2 | 10808 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10809 | { |
10810 | int sample_thread = SAMPLE_THREAD; | |
10811 | ||
a3f17187 | 10812 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10813 | set_general_thread (sample_thread); |
c906108c SS |
10814 | } |
10815 | ||
10816 | ||
10817 | static void | |
fba45db2 | 10818 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10819 | { |
10820 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10821 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10822 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10823 | |
79d7f229 | 10824 | if (remote_thread_alive (ptid)) |
c906108c SS |
10825 | printf_filtered ("PASS: Thread alive test\n"); |
10826 | else | |
10827 | printf_filtered ("FAIL: Thread alive test\n"); | |
10828 | } | |
10829 | ||
23860348 | 10830 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10831 | |
10832 | void | |
fba45db2 | 10833 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10834 | { |
10835 | char hexid[20]; | |
10836 | ||
23860348 | 10837 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10838 | hexid[16] = 0; |
10839 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10840 | } | |
10841 | ||
10842 | static void | |
fba45db2 | 10843 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10844 | { |
10845 | int startflag = 1; | |
10846 | threadref nextthread; | |
10847 | int done, result_count; | |
10848 | threadref threadlist[3]; | |
10849 | ||
10850 | printf_filtered ("Remote Threadlist test\n"); | |
10851 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10852 | &result_count, &threadlist[0])) | |
10853 | printf_filtered ("FAIL: threadlist test\n"); | |
10854 | else | |
10855 | { | |
10856 | threadref *scan = threadlist; | |
10857 | threadref *limit = scan + result_count; | |
10858 | ||
10859 | while (scan < limit) | |
10860 | output_threadid (" thread ", scan++); | |
10861 | } | |
10862 | } | |
10863 | ||
10864 | void | |
fba45db2 | 10865 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10866 | { |
10867 | output_threadid ("Threadid: ", &info->threadid); | |
10868 | printf_filtered ("Name: %s\n ", info->shortname); | |
10869 | printf_filtered ("State: %s\n", info->display); | |
10870 | printf_filtered ("other: %s\n\n", info->more_display); | |
10871 | } | |
10872 | ||
10873 | int | |
fba45db2 | 10874 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10875 | { |
10876 | int result; | |
10877 | int set; | |
10878 | struct gdb_ext_thread_info threadinfo; | |
10879 | ||
10880 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10881 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10882 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10883 | display_thread_info (&threadinfo); | |
10884 | return result; | |
10885 | } | |
10886 | ||
10887 | static void | |
fba45db2 | 10888 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10889 | { |
10890 | int athread = SAMPLE_THREAD; | |
10891 | threadref thread; | |
10892 | int set; | |
10893 | ||
10894 | int_to_threadref (&thread, athread); | |
10895 | printf_filtered ("Remote Threadinfo test\n"); | |
10896 | if (!get_and_display_threadinfo (&thread)) | |
10897 | printf_filtered ("FAIL cannot get thread info\n"); | |
10898 | } | |
10899 | ||
10900 | static int | |
fba45db2 | 10901 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10902 | { |
10903 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10904 | return get_and_display_threadinfo (ref); | |
10905 | } | |
10906 | ||
10907 | static void | |
fba45db2 | 10908 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10909 | { |
10910 | printf_filtered ("Remote Threadlist update test\n"); | |
10911 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10912 | } | |
10913 | ||
10914 | static void | |
10915 | init_remote_threadtests (void) | |
10916 | { | |
3e43a32a MS |
10917 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10918 | _("Fetch and print the remote list of " | |
10919 | "thread identifiers, one pkt only")); | |
c906108c | 10920 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10921 | _("Fetch and display info about one thread")); |
c906108c | 10922 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10923 | _("Test setting to a different thread")); |
c906108c | 10924 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10925 | _("Iterate through updating all remote thread info")); |
c906108c | 10926 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10927 | _(" Remote thread alive test ")); |
c906108c SS |
10928 | } |
10929 | ||
10930 | #endif /* 0 */ | |
10931 | ||
f3fb8c85 MS |
10932 | /* Convert a thread ID to a string. Returns the string in a static |
10933 | buffer. */ | |
10934 | ||
7a114964 | 10935 | static const char * |
117de6a9 | 10936 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10937 | { |
79d7f229 | 10938 | static char buf[64]; |
82f73884 | 10939 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10940 | |
7cee1e54 PA |
10941 | if (ptid_equal (ptid, null_ptid)) |
10942 | return normal_pid_to_str (ptid); | |
10943 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10944 | { |
10945 | /* Printing an inferior target id. */ | |
10946 | ||
10947 | /* When multi-process extensions are off, there's no way in the | |
10948 | remote protocol to know the remote process id, if there's any | |
10949 | at all. There's one exception --- when we're connected with | |
10950 | target extended-remote, and we manually attached to a process | |
10951 | with "attach PID". We don't record anywhere a flag that | |
10952 | allows us to distinguish that case from the case of | |
10953 | connecting with extended-remote and the stub already being | |
10954 | attached to a process, and reporting yes to qAttached, hence | |
10955 | no smart special casing here. */ | |
10956 | if (!remote_multi_process_p (rs)) | |
10957 | { | |
10958 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10959 | return buf; | |
10960 | } | |
10961 | ||
10962 | return normal_pid_to_str (ptid); | |
82f73884 | 10963 | } |
ecd0ada5 | 10964 | else |
79d7f229 | 10965 | { |
ecd0ada5 PA |
10966 | if (ptid_equal (magic_null_ptid, ptid)) |
10967 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 10968 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
10969 | if (ptid_get_lwp (ptid) == 0) |
10970 | return normal_pid_to_str (ptid); | |
10971 | else | |
10972 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
10973 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
10974 | else |
10975 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 10976 | ptid_get_lwp (ptid)); |
79d7f229 PA |
10977 | return buf; |
10978 | } | |
f3fb8c85 MS |
10979 | } |
10980 | ||
38691318 KB |
10981 | /* Get the address of the thread local variable in OBJFILE which is |
10982 | stored at OFFSET within the thread local storage for thread PTID. */ | |
10983 | ||
10984 | static CORE_ADDR | |
117de6a9 PA |
10985 | remote_get_thread_local_address (struct target_ops *ops, |
10986 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 10987 | { |
4082afcc | 10988 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
10989 | { |
10990 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 10991 | char *p = rs->buf; |
82f73884 | 10992 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 10993 | enum packet_result result; |
38691318 KB |
10994 | |
10995 | strcpy (p, "qGetTLSAddr:"); | |
10996 | p += strlen (p); | |
82f73884 | 10997 | p = write_ptid (p, endp, ptid); |
38691318 KB |
10998 | *p++ = ','; |
10999 | p += hexnumstr (p, offset); | |
11000 | *p++ = ','; | |
11001 | p += hexnumstr (p, lm); | |
11002 | *p++ = '\0'; | |
11003 | ||
6d820c5c DJ |
11004 | putpkt (rs->buf); |
11005 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11006 | result = packet_ok (rs->buf, |
11007 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11008 | if (result == PACKET_OK) |
38691318 KB |
11009 | { |
11010 | ULONGEST result; | |
11011 | ||
6d820c5c | 11012 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11013 | return result; |
11014 | } | |
571dd617 | 11015 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11016 | throw_error (TLS_GENERIC_ERROR, |
11017 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11018 | else |
109c3e39 AC |
11019 | throw_error (TLS_GENERIC_ERROR, |
11020 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11021 | } |
11022 | else | |
109c3e39 AC |
11023 | throw_error (TLS_GENERIC_ERROR, |
11024 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11025 | /* Not reached. */ |
11026 | return 0; | |
11027 | } | |
11028 | ||
711e434b PM |
11029 | /* Provide thread local base, i.e. Thread Information Block address. |
11030 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11031 | ||
70221824 | 11032 | static int |
bd7ae0f5 | 11033 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11034 | { |
4082afcc | 11035 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11036 | { |
11037 | struct remote_state *rs = get_remote_state (); | |
11038 | char *p = rs->buf; | |
11039 | char *endp = rs->buf + get_remote_packet_size (); | |
11040 | enum packet_result result; | |
11041 | ||
11042 | strcpy (p, "qGetTIBAddr:"); | |
11043 | p += strlen (p); | |
11044 | p = write_ptid (p, endp, ptid); | |
11045 | *p++ = '\0'; | |
11046 | ||
11047 | putpkt (rs->buf); | |
11048 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11049 | result = packet_ok (rs->buf, | |
11050 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11051 | if (result == PACKET_OK) | |
11052 | { | |
11053 | ULONGEST result; | |
11054 | ||
11055 | unpack_varlen_hex (rs->buf, &result); | |
11056 | if (addr) | |
11057 | *addr = (CORE_ADDR) result; | |
11058 | return 1; | |
11059 | } | |
11060 | else if (result == PACKET_UNKNOWN) | |
11061 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11062 | else | |
11063 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11064 | } | |
11065 | else | |
11066 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11067 | /* Not reached. */ | |
11068 | return 0; | |
11069 | } | |
11070 | ||
29709017 DJ |
11071 | /* Support for inferring a target description based on the current |
11072 | architecture and the size of a 'g' packet. While the 'g' packet | |
11073 | can have any size (since optional registers can be left off the | |
11074 | end), some sizes are easily recognizable given knowledge of the | |
11075 | approximate architecture. */ | |
11076 | ||
11077 | struct remote_g_packet_guess | |
11078 | { | |
11079 | int bytes; | |
11080 | const struct target_desc *tdesc; | |
11081 | }; | |
11082 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11083 | DEF_VEC_O(remote_g_packet_guess_s); | |
11084 | ||
11085 | struct remote_g_packet_data | |
11086 | { | |
11087 | VEC(remote_g_packet_guess_s) *guesses; | |
11088 | }; | |
11089 | ||
11090 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11091 | ||
11092 | static void * | |
11093 | remote_g_packet_data_init (struct obstack *obstack) | |
11094 | { | |
11095 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11096 | } | |
11097 | ||
11098 | void | |
11099 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11100 | const struct target_desc *tdesc) | |
11101 | { | |
11102 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11103 | = ((struct remote_g_packet_data *) |
11104 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11105 | struct remote_g_packet_guess new_guess, *guess; |
11106 | int ix; | |
11107 | ||
11108 | gdb_assert (tdesc != NULL); | |
11109 | ||
11110 | for (ix = 0; | |
11111 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11112 | ix++) | |
11113 | if (guess->bytes == bytes) | |
11114 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11115 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11116 | bytes); |
11117 | ||
11118 | new_guess.bytes = bytes; | |
11119 | new_guess.tdesc = tdesc; | |
11120 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11121 | } | |
11122 | ||
d962ef82 DJ |
11123 | /* Return 1 if remote_read_description would do anything on this target |
11124 | and architecture, 0 otherwise. */ | |
11125 | ||
11126 | static int | |
11127 | remote_read_description_p (struct target_ops *target) | |
11128 | { | |
11129 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11130 | = ((struct remote_g_packet_data *) |
11131 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11132 | |
11133 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11134 | return 1; | |
11135 | ||
11136 | return 0; | |
11137 | } | |
11138 | ||
29709017 DJ |
11139 | static const struct target_desc * |
11140 | remote_read_description (struct target_ops *target) | |
11141 | { | |
11142 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11143 | = ((struct remote_g_packet_data *) |
11144 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11145 | |
d962ef82 DJ |
11146 | /* Do not try this during initial connection, when we do not know |
11147 | whether there is a running but stopped thread. */ | |
11148 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 11149 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 11150 | |
29709017 DJ |
11151 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11152 | { | |
11153 | struct remote_g_packet_guess *guess; | |
11154 | int ix; | |
11155 | int bytes = send_g_packet (); | |
11156 | ||
11157 | for (ix = 0; | |
11158 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11159 | ix++) | |
11160 | if (guess->bytes == bytes) | |
11161 | return guess->tdesc; | |
11162 | ||
11163 | /* We discard the g packet. A minor optimization would be to | |
11164 | hold on to it, and fill the register cache once we have selected | |
11165 | an architecture, but it's too tricky to do safely. */ | |
11166 | } | |
11167 | ||
2117c711 | 11168 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
11169 | } |
11170 | ||
a6b151f1 DJ |
11171 | /* Remote file transfer support. This is host-initiated I/O, not |
11172 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11173 | ||
11174 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11175 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11176 | decrease *LEFT. Otherwise raise an error. */ | |
11177 | ||
11178 | static void | |
a121b7c1 | 11179 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11180 | { |
11181 | int len = strlen (string); | |
11182 | ||
11183 | if (len > *left) | |
11184 | error (_("Packet too long for target.")); | |
11185 | ||
11186 | memcpy (*buffer, string, len); | |
11187 | *buffer += len; | |
11188 | *left -= len; | |
11189 | ||
11190 | /* NUL-terminate the buffer as a convenience, if there is | |
11191 | room. */ | |
11192 | if (*left) | |
11193 | **buffer = '\0'; | |
11194 | } | |
11195 | ||
11196 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11197 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11198 | decrease *LEFT. Otherwise raise an error. */ | |
11199 | ||
11200 | static void | |
11201 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11202 | int len) | |
11203 | { | |
11204 | if (2 * len > *left) | |
11205 | error (_("Packet too long for target.")); | |
11206 | ||
11207 | bin2hex (bytes, *buffer, len); | |
11208 | *buffer += 2 * len; | |
11209 | *left -= 2 * len; | |
11210 | ||
11211 | /* NUL-terminate the buffer as a convenience, if there is | |
11212 | room. */ | |
11213 | if (*left) | |
11214 | **buffer = '\0'; | |
11215 | } | |
11216 | ||
11217 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11218 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11219 | decrease *LEFT. Otherwise raise an error. */ | |
11220 | ||
11221 | static void | |
11222 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11223 | { | |
11224 | int len = hexnumlen (value); | |
11225 | ||
11226 | if (len > *left) | |
11227 | error (_("Packet too long for target.")); | |
11228 | ||
11229 | hexnumstr (*buffer, value); | |
11230 | *buffer += len; | |
11231 | *left -= len; | |
11232 | ||
11233 | /* NUL-terminate the buffer as a convenience, if there is | |
11234 | room. */ | |
11235 | if (*left) | |
11236 | **buffer = '\0'; | |
11237 | } | |
11238 | ||
11239 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11240 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11241 | was included, and *ATTACHMENT to point to the start of the annex | |
11242 | if any. The length of the packet isn't needed here; there may | |
11243 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11244 | ||
11245 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11246 | -1 is returned, the other variables may not be initialized. */ | |
11247 | ||
11248 | static int | |
11249 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11250 | int *remote_errno, char **attachment) | |
11251 | { | |
11252 | char *p, *p2; | |
11253 | ||
11254 | *remote_errno = 0; | |
11255 | *attachment = NULL; | |
11256 | ||
11257 | if (buffer[0] != 'F') | |
11258 | return -1; | |
11259 | ||
11260 | errno = 0; | |
11261 | *retcode = strtol (&buffer[1], &p, 16); | |
11262 | if (errno != 0 || p == &buffer[1]) | |
11263 | return -1; | |
11264 | ||
11265 | /* Check for ",errno". */ | |
11266 | if (*p == ',') | |
11267 | { | |
11268 | errno = 0; | |
11269 | *remote_errno = strtol (p + 1, &p2, 16); | |
11270 | if (errno != 0 || p + 1 == p2) | |
11271 | return -1; | |
11272 | p = p2; | |
11273 | } | |
11274 | ||
11275 | /* Check for ";attachment". If there is no attachment, the | |
11276 | packet should end here. */ | |
11277 | if (*p == ';') | |
11278 | { | |
11279 | *attachment = p + 1; | |
11280 | return 0; | |
11281 | } | |
11282 | else if (*p == '\0') | |
11283 | return 0; | |
11284 | else | |
11285 | return -1; | |
11286 | } | |
11287 | ||
11288 | /* Send a prepared I/O packet to the target and read its response. | |
11289 | The prepared packet is in the global RS->BUF before this function | |
11290 | is called, and the answer is there when we return. | |
11291 | ||
11292 | COMMAND_BYTES is the length of the request to send, which may include | |
11293 | binary data. WHICH_PACKET is the packet configuration to check | |
11294 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11295 | is set to the error number and -1 is returned. Otherwise the value | |
11296 | returned by the function is returned. | |
11297 | ||
11298 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11299 | attachment is expected; an error will be reported if there's a | |
11300 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11301 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11302 | attachment's length. */ | |
11303 | ||
11304 | static int | |
11305 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11306 | int *remote_errno, char **attachment, | |
11307 | int *attachment_len) | |
11308 | { | |
11309 | struct remote_state *rs = get_remote_state (); | |
11310 | int ret, bytes_read; | |
11311 | char *attachment_tmp; | |
11312 | ||
5d93a237 | 11313 | if (!rs->remote_desc |
4082afcc | 11314 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11315 | { |
11316 | *remote_errno = FILEIO_ENOSYS; | |
11317 | return -1; | |
11318 | } | |
11319 | ||
11320 | putpkt_binary (rs->buf, command_bytes); | |
11321 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11322 | ||
11323 | /* If it timed out, something is wrong. Don't try to parse the | |
11324 | buffer. */ | |
11325 | if (bytes_read < 0) | |
11326 | { | |
11327 | *remote_errno = FILEIO_EINVAL; | |
11328 | return -1; | |
11329 | } | |
11330 | ||
11331 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11332 | { | |
11333 | case PACKET_ERROR: | |
11334 | *remote_errno = FILEIO_EINVAL; | |
11335 | return -1; | |
11336 | case PACKET_UNKNOWN: | |
11337 | *remote_errno = FILEIO_ENOSYS; | |
11338 | return -1; | |
11339 | case PACKET_OK: | |
11340 | break; | |
11341 | } | |
11342 | ||
11343 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11344 | &attachment_tmp)) | |
11345 | { | |
11346 | *remote_errno = FILEIO_EINVAL; | |
11347 | return -1; | |
11348 | } | |
11349 | ||
11350 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11351 | if ((attachment_tmp == NULL && attachment != NULL) | |
11352 | || (attachment_tmp != NULL && attachment == NULL)) | |
11353 | { | |
11354 | *remote_errno = FILEIO_EINVAL; | |
11355 | return -1; | |
11356 | } | |
11357 | ||
11358 | /* If an attachment was found, it must point into the packet buffer; | |
11359 | work out how many bytes there were. */ | |
11360 | if (attachment_tmp != NULL) | |
11361 | { | |
11362 | *attachment = attachment_tmp; | |
11363 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11364 | } | |
11365 | ||
11366 | return ret; | |
11367 | } | |
11368 | ||
80152258 PA |
11369 | /* Invalidate the readahead cache. */ |
11370 | ||
11371 | static void | |
11372 | readahead_cache_invalidate (void) | |
11373 | { | |
11374 | struct remote_state *rs = get_remote_state (); | |
11375 | ||
11376 | rs->readahead_cache.fd = -1; | |
11377 | } | |
11378 | ||
11379 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
11380 | ||
11381 | static void | |
11382 | readahead_cache_invalidate_fd (int fd) | |
11383 | { | |
11384 | struct remote_state *rs = get_remote_state (); | |
11385 | ||
11386 | if (rs->readahead_cache.fd == fd) | |
11387 | rs->readahead_cache.fd = -1; | |
11388 | } | |
11389 | ||
15a201c8 GB |
11390 | /* Set the filesystem remote_hostio functions that take FILENAME |
11391 | arguments will use. Return 0 on success, or -1 if an error | |
11392 | occurs (and set *REMOTE_ERRNO). */ | |
11393 | ||
11394 | static int | |
11395 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11396 | { | |
11397 | struct remote_state *rs = get_remote_state (); | |
11398 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11399 | char *p = rs->buf; | |
11400 | int left = get_remote_packet_size () - 1; | |
11401 | char arg[9]; | |
11402 | int ret; | |
11403 | ||
11404 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11405 | return 0; | |
11406 | ||
11407 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11408 | return 0; | |
11409 | ||
11410 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11411 | ||
11412 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11413 | remote_buffer_add_string (&p, &left, arg); | |
11414 | ||
11415 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11416 | remote_errno, NULL, NULL); | |
11417 | ||
11418 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11419 | return 0; | |
11420 | ||
11421 | if (ret == 0) | |
11422 | rs->fs_pid = required_pid; | |
11423 | ||
11424 | return ret; | |
11425 | } | |
11426 | ||
12e2a5fd | 11427 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11428 | |
11429 | static int | |
cd897586 | 11430 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11431 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11432 | int flags, int mode, int warn_if_slow, |
11433 | int *remote_errno) | |
a6b151f1 DJ |
11434 | { |
11435 | struct remote_state *rs = get_remote_state (); | |
11436 | char *p = rs->buf; | |
11437 | int left = get_remote_packet_size () - 1; | |
11438 | ||
4313b8c0 GB |
11439 | if (warn_if_slow) |
11440 | { | |
11441 | static int warning_issued = 0; | |
11442 | ||
11443 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11444 | filename); | |
11445 | ||
11446 | if (!warning_issued) | |
11447 | { | |
11448 | warning (_("File transfers from remote targets can be slow." | |
11449 | " Use \"set sysroot\" to access files locally" | |
11450 | " instead.")); | |
11451 | warning_issued = 1; | |
11452 | } | |
11453 | } | |
11454 | ||
15a201c8 GB |
11455 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11456 | return -1; | |
11457 | ||
a6b151f1 DJ |
11458 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11459 | ||
11460 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11461 | strlen (filename)); | |
11462 | remote_buffer_add_string (&p, &left, ","); | |
11463 | ||
11464 | remote_buffer_add_int (&p, &left, flags); | |
11465 | remote_buffer_add_string (&p, &left, ","); | |
11466 | ||
11467 | remote_buffer_add_int (&p, &left, mode); | |
11468 | ||
11469 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11470 | remote_errno, NULL, NULL); | |
11471 | } | |
11472 | ||
12e2a5fd | 11473 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11474 | |
11475 | static int | |
0d866f62 TT |
11476 | remote_hostio_pwrite (struct target_ops *self, |
11477 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11478 | ULONGEST offset, int *remote_errno) |
11479 | { | |
11480 | struct remote_state *rs = get_remote_state (); | |
11481 | char *p = rs->buf; | |
11482 | int left = get_remote_packet_size (); | |
11483 | int out_len; | |
11484 | ||
80152258 PA |
11485 | readahead_cache_invalidate_fd (fd); |
11486 | ||
a6b151f1 DJ |
11487 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11488 | ||
11489 | remote_buffer_add_int (&p, &left, fd); | |
11490 | remote_buffer_add_string (&p, &left, ","); | |
11491 | ||
11492 | remote_buffer_add_int (&p, &left, offset); | |
11493 | remote_buffer_add_string (&p, &left, ","); | |
11494 | ||
124e13d9 | 11495 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11496 | get_remote_packet_size () - (p - rs->buf)); |
11497 | ||
11498 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11499 | remote_errno, NULL, NULL); | |
11500 | } | |
11501 | ||
80152258 PA |
11502 | /* Helper for the implementation of to_fileio_pread. Read the file |
11503 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11504 | |
11505 | static int | |
80152258 PA |
11506 | remote_hostio_pread_vFile (struct target_ops *self, |
11507 | int fd, gdb_byte *read_buf, int len, | |
11508 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11509 | { |
11510 | struct remote_state *rs = get_remote_state (); | |
11511 | char *p = rs->buf; | |
11512 | char *attachment; | |
11513 | int left = get_remote_packet_size (); | |
11514 | int ret, attachment_len; | |
11515 | int read_len; | |
11516 | ||
11517 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11518 | ||
11519 | remote_buffer_add_int (&p, &left, fd); | |
11520 | remote_buffer_add_string (&p, &left, ","); | |
11521 | ||
11522 | remote_buffer_add_int (&p, &left, len); | |
11523 | remote_buffer_add_string (&p, &left, ","); | |
11524 | ||
11525 | remote_buffer_add_int (&p, &left, offset); | |
11526 | ||
11527 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11528 | remote_errno, &attachment, | |
11529 | &attachment_len); | |
11530 | ||
11531 | if (ret < 0) | |
11532 | return ret; | |
11533 | ||
bc20a4af | 11534 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11535 | read_buf, len); |
11536 | if (read_len != ret) | |
11537 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11538 | ||
11539 | return ret; | |
11540 | } | |
11541 | ||
80152258 PA |
11542 | /* Serve pread from the readahead cache. Returns number of bytes |
11543 | read, or 0 if the request can't be served from the cache. */ | |
11544 | ||
11545 | static int | |
11546 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11547 | int fd, gdb_byte *read_buf, size_t len, | |
11548 | ULONGEST offset) | |
11549 | { | |
11550 | struct readahead_cache *cache = &rs->readahead_cache; | |
11551 | ||
11552 | if (cache->fd == fd | |
11553 | && cache->offset <= offset | |
11554 | && offset < cache->offset + cache->bufsize) | |
11555 | { | |
11556 | ULONGEST max = cache->offset + cache->bufsize; | |
11557 | ||
11558 | if (offset + len > max) | |
11559 | len = max - offset; | |
11560 | ||
11561 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11562 | return len; | |
11563 | } | |
11564 | ||
11565 | return 0; | |
11566 | } | |
11567 | ||
11568 | /* Implementation of to_fileio_pread. */ | |
11569 | ||
11570 | static int | |
11571 | remote_hostio_pread (struct target_ops *self, | |
11572 | int fd, gdb_byte *read_buf, int len, | |
11573 | ULONGEST offset, int *remote_errno) | |
11574 | { | |
11575 | int ret; | |
11576 | struct remote_state *rs = get_remote_state (); | |
11577 | struct readahead_cache *cache = &rs->readahead_cache; | |
11578 | ||
11579 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11580 | if (ret > 0) | |
11581 | { | |
11582 | cache->hit_count++; | |
11583 | ||
11584 | if (remote_debug) | |
11585 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11586 | pulongest (cache->hit_count)); | |
11587 | return ret; | |
11588 | } | |
11589 | ||
11590 | cache->miss_count++; | |
11591 | if (remote_debug) | |
11592 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11593 | pulongest (cache->miss_count)); | |
11594 | ||
11595 | cache->fd = fd; | |
11596 | cache->offset = offset; | |
11597 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11598 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11599 | |
11600 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11601 | cache->offset, remote_errno); | |
11602 | if (ret <= 0) | |
11603 | { | |
11604 | readahead_cache_invalidate_fd (fd); | |
11605 | return ret; | |
11606 | } | |
11607 | ||
11608 | cache->bufsize = ret; | |
11609 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11610 | } | |
11611 | ||
12e2a5fd | 11612 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11613 | |
11614 | static int | |
df39ea25 | 11615 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11616 | { |
11617 | struct remote_state *rs = get_remote_state (); | |
11618 | char *p = rs->buf; | |
11619 | int left = get_remote_packet_size () - 1; | |
11620 | ||
80152258 PA |
11621 | readahead_cache_invalidate_fd (fd); |
11622 | ||
a6b151f1 DJ |
11623 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11624 | ||
11625 | remote_buffer_add_int (&p, &left, fd); | |
11626 | ||
11627 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11628 | remote_errno, NULL, NULL); | |
11629 | } | |
11630 | ||
12e2a5fd | 11631 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11632 | |
11633 | static int | |
dbbca37d | 11634 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11635 | struct inferior *inf, const char *filename, |
11636 | int *remote_errno) | |
a6b151f1 DJ |
11637 | { |
11638 | struct remote_state *rs = get_remote_state (); | |
11639 | char *p = rs->buf; | |
11640 | int left = get_remote_packet_size () - 1; | |
11641 | ||
15a201c8 GB |
11642 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11643 | return -1; | |
11644 | ||
a6b151f1 DJ |
11645 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11646 | ||
11647 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11648 | strlen (filename)); | |
11649 | ||
11650 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11651 | remote_errno, NULL, NULL); | |
11652 | } | |
11653 | ||
12e2a5fd | 11654 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
11655 | |
11656 | static char * | |
fab5aa7c | 11657 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11658 | struct inferior *inf, const char *filename, |
11659 | int *remote_errno) | |
b9e7b9c3 UW |
11660 | { |
11661 | struct remote_state *rs = get_remote_state (); | |
11662 | char *p = rs->buf; | |
11663 | char *attachment; | |
11664 | int left = get_remote_packet_size (); | |
11665 | int len, attachment_len; | |
11666 | int read_len; | |
11667 | char *ret; | |
11668 | ||
15a201c8 GB |
11669 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11670 | return NULL; | |
11671 | ||
b9e7b9c3 UW |
11672 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11673 | ||
11674 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11675 | strlen (filename)); | |
11676 | ||
11677 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11678 | remote_errno, &attachment, | |
11679 | &attachment_len); | |
11680 | ||
11681 | if (len < 0) | |
11682 | return NULL; | |
11683 | ||
224c3ddb | 11684 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 11685 | |
bc20a4af PA |
11686 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11687 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
11688 | if (read_len != len) |
11689 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11690 | ||
11691 | ret[len] = '\0'; | |
11692 | return ret; | |
11693 | } | |
11694 | ||
12e2a5fd | 11695 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11696 | |
11697 | static int | |
11698 | remote_hostio_fstat (struct target_ops *self, | |
11699 | int fd, struct stat *st, | |
11700 | int *remote_errno) | |
11701 | { | |
11702 | struct remote_state *rs = get_remote_state (); | |
11703 | char *p = rs->buf; | |
11704 | int left = get_remote_packet_size (); | |
11705 | int attachment_len, ret; | |
11706 | char *attachment; | |
11707 | struct fio_stat fst; | |
11708 | int read_len; | |
11709 | ||
464b0089 GB |
11710 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11711 | ||
11712 | remote_buffer_add_int (&p, &left, fd); | |
11713 | ||
11714 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11715 | remote_errno, &attachment, | |
11716 | &attachment_len); | |
11717 | if (ret < 0) | |
0a93529c | 11718 | { |
464b0089 GB |
11719 | if (*remote_errno != FILEIO_ENOSYS) |
11720 | return ret; | |
11721 | ||
0a93529c GB |
11722 | /* Strictly we should return -1, ENOSYS here, but when |
11723 | "set sysroot remote:" was implemented in August 2008 | |
11724 | BFD's need for a stat function was sidestepped with | |
11725 | this hack. This was not remedied until March 2015 | |
11726 | so we retain the previous behavior to avoid breaking | |
11727 | compatibility. | |
11728 | ||
11729 | Note that the memset is a March 2015 addition; older | |
11730 | GDBs set st_size *and nothing else* so the structure | |
11731 | would have garbage in all other fields. This might | |
11732 | break something but retaining the previous behavior | |
11733 | here would be just too wrong. */ | |
11734 | ||
11735 | memset (st, 0, sizeof (struct stat)); | |
11736 | st->st_size = INT_MAX; | |
11737 | return 0; | |
11738 | } | |
11739 | ||
0a93529c GB |
11740 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11741 | (gdb_byte *) &fst, sizeof (fst)); | |
11742 | ||
11743 | if (read_len != ret) | |
11744 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11745 | ||
11746 | if (read_len != sizeof (fst)) | |
11747 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11748 | read_len, (int) sizeof (fst)); | |
11749 | ||
11750 | remote_fileio_to_host_stat (&fst, st); | |
11751 | ||
11752 | return 0; | |
11753 | } | |
11754 | ||
12e2a5fd | 11755 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11756 | |
11757 | static int | |
11758 | remote_filesystem_is_local (struct target_ops *self) | |
11759 | { | |
11760 | /* Valgrind GDB presents itself as a remote target but works | |
11761 | on the local filesystem: it does not implement remote get | |
11762 | and users are not expected to set a sysroot. To handle | |
11763 | this case we treat the remote filesystem as local if the | |
11764 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11765 | does not support vFile:open. */ | |
a3be80c3 | 11766 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11767 | { |
11768 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11769 | ||
11770 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11771 | { | |
11772 | int fd, remote_errno; | |
11773 | ||
11774 | /* Try opening a file to probe support. The supplied | |
11775 | filename is irrelevant, we only care about whether | |
11776 | the stub recognizes the packet or not. */ | |
07c138c8 | 11777 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11778 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11779 | &remote_errno); |
11780 | ||
11781 | if (fd >= 0) | |
11782 | remote_hostio_close (self, fd, &remote_errno); | |
11783 | ||
11784 | ps = packet_support (PACKET_vFile_open); | |
11785 | } | |
11786 | ||
11787 | if (ps == PACKET_DISABLE) | |
11788 | { | |
11789 | static int warning_issued = 0; | |
11790 | ||
11791 | if (!warning_issued) | |
11792 | { | |
11793 | warning (_("remote target does not support file" | |
11794 | " transfer, attempting to access files" | |
11795 | " from local filesystem.")); | |
11796 | warning_issued = 1; | |
11797 | } | |
11798 | ||
11799 | return 1; | |
11800 | } | |
11801 | } | |
11802 | ||
11803 | return 0; | |
11804 | } | |
11805 | ||
a6b151f1 DJ |
11806 | static int |
11807 | remote_fileio_errno_to_host (int errnum) | |
11808 | { | |
11809 | switch (errnum) | |
11810 | { | |
11811 | case FILEIO_EPERM: | |
11812 | return EPERM; | |
11813 | case FILEIO_ENOENT: | |
11814 | return ENOENT; | |
11815 | case FILEIO_EINTR: | |
11816 | return EINTR; | |
11817 | case FILEIO_EIO: | |
11818 | return EIO; | |
11819 | case FILEIO_EBADF: | |
11820 | return EBADF; | |
11821 | case FILEIO_EACCES: | |
11822 | return EACCES; | |
11823 | case FILEIO_EFAULT: | |
11824 | return EFAULT; | |
11825 | case FILEIO_EBUSY: | |
11826 | return EBUSY; | |
11827 | case FILEIO_EEXIST: | |
11828 | return EEXIST; | |
11829 | case FILEIO_ENODEV: | |
11830 | return ENODEV; | |
11831 | case FILEIO_ENOTDIR: | |
11832 | return ENOTDIR; | |
11833 | case FILEIO_EISDIR: | |
11834 | return EISDIR; | |
11835 | case FILEIO_EINVAL: | |
11836 | return EINVAL; | |
11837 | case FILEIO_ENFILE: | |
11838 | return ENFILE; | |
11839 | case FILEIO_EMFILE: | |
11840 | return EMFILE; | |
11841 | case FILEIO_EFBIG: | |
11842 | return EFBIG; | |
11843 | case FILEIO_ENOSPC: | |
11844 | return ENOSPC; | |
11845 | case FILEIO_ESPIPE: | |
11846 | return ESPIPE; | |
11847 | case FILEIO_EROFS: | |
11848 | return EROFS; | |
11849 | case FILEIO_ENOSYS: | |
11850 | return ENOSYS; | |
11851 | case FILEIO_ENAMETOOLONG: | |
11852 | return ENAMETOOLONG; | |
11853 | } | |
11854 | return -1; | |
11855 | } | |
11856 | ||
11857 | static char * | |
11858 | remote_hostio_error (int errnum) | |
11859 | { | |
11860 | int host_error = remote_fileio_errno_to_host (errnum); | |
11861 | ||
11862 | if (host_error == -1) | |
11863 | error (_("Unknown remote I/O error %d"), errnum); | |
11864 | else | |
11865 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11866 | } | |
11867 | ||
a6b151f1 DJ |
11868 | static void |
11869 | remote_hostio_close_cleanup (void *opaque) | |
11870 | { | |
11871 | int fd = *(int *) opaque; | |
11872 | int remote_errno; | |
11873 | ||
df39ea25 | 11874 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11875 | } |
11876 | ||
11877 | void | |
11878 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11879 | { | |
11880 | struct cleanup *back_to, *close_cleanup; | |
11881 | int retcode, fd, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
11882 | gdb_byte *buffer; |
11883 | int bytes_in_buffer; | |
11884 | int saw_eof; | |
11885 | ULONGEST offset; | |
5d93a237 | 11886 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11887 | |
5d93a237 | 11888 | if (!rs->remote_desc) |
a6b151f1 DJ |
11889 | error (_("command can only be used with remote target")); |
11890 | ||
d419f42d | 11891 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11892 | if (file == NULL) |
11893 | perror_with_name (local_file); | |
a6b151f1 | 11894 | |
07c138c8 | 11895 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11896 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11897 | | FILEIO_O_TRUNC), |
4313b8c0 | 11898 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11899 | if (fd == -1) |
11900 | remote_hostio_error (remote_errno); | |
11901 | ||
11902 | /* Send up to this many bytes at once. They won't all fit in the | |
11903 | remote packet limit, so we'll transfer slightly fewer. */ | |
11904 | io_size = get_remote_packet_size (); | |
224c3ddb | 11905 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 11906 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
11907 | |
11908 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11909 | ||
11910 | bytes_in_buffer = 0; | |
11911 | saw_eof = 0; | |
11912 | offset = 0; | |
11913 | while (bytes_in_buffer || !saw_eof) | |
11914 | { | |
11915 | if (!saw_eof) | |
11916 | { | |
3e43a32a MS |
11917 | bytes = fread (buffer + bytes_in_buffer, 1, |
11918 | io_size - bytes_in_buffer, | |
d419f42d | 11919 | file.get ()); |
a6b151f1 DJ |
11920 | if (bytes == 0) |
11921 | { | |
d419f42d | 11922 | if (ferror (file.get ())) |
a6b151f1 DJ |
11923 | error (_("Error reading %s."), local_file); |
11924 | else | |
11925 | { | |
11926 | /* EOF. Unless there is something still in the | |
11927 | buffer from the last iteration, we are done. */ | |
11928 | saw_eof = 1; | |
11929 | if (bytes_in_buffer == 0) | |
11930 | break; | |
11931 | } | |
11932 | } | |
11933 | } | |
11934 | else | |
11935 | bytes = 0; | |
11936 | ||
11937 | bytes += bytes_in_buffer; | |
11938 | bytes_in_buffer = 0; | |
11939 | ||
0d866f62 TT |
11940 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11941 | fd, buffer, bytes, | |
3e43a32a | 11942 | offset, &remote_errno); |
a6b151f1 DJ |
11943 | |
11944 | if (retcode < 0) | |
11945 | remote_hostio_error (remote_errno); | |
11946 | else if (retcode == 0) | |
11947 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11948 | else if (retcode < bytes) | |
11949 | { | |
11950 | /* Short write. Save the rest of the read data for the next | |
11951 | write. */ | |
11952 | bytes_in_buffer = bytes - retcode; | |
11953 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11954 | } | |
11955 | ||
11956 | offset += retcode; | |
11957 | } | |
11958 | ||
11959 | discard_cleanups (close_cleanup); | |
df39ea25 | 11960 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11961 | remote_hostio_error (remote_errno); |
11962 | ||
11963 | if (from_tty) | |
11964 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
11965 | do_cleanups (back_to); | |
11966 | } | |
11967 | ||
11968 | void | |
11969 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
11970 | { | |
11971 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 11972 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
11973 | gdb_byte *buffer; |
11974 | ULONGEST offset; | |
5d93a237 | 11975 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11976 | |
5d93a237 | 11977 | if (!rs->remote_desc) |
a6b151f1 DJ |
11978 | error (_("command can only be used with remote target")); |
11979 | ||
07c138c8 | 11980 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
11981 | remote_file, FILEIO_O_RDONLY, 0, 0, |
11982 | &remote_errno); | |
a6b151f1 DJ |
11983 | if (fd == -1) |
11984 | remote_hostio_error (remote_errno); | |
11985 | ||
d419f42d | 11986 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
11987 | if (file == NULL) |
11988 | perror_with_name (local_file); | |
a6b151f1 DJ |
11989 | |
11990 | /* Send up to this many bytes at once. They won't all fit in the | |
11991 | remote packet limit, so we'll transfer slightly fewer. */ | |
11992 | io_size = get_remote_packet_size (); | |
224c3ddb | 11993 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 11994 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
11995 | |
11996 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11997 | ||
11998 | offset = 0; | |
11999 | while (1) | |
12000 | { | |
a3be983c TT |
12001 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
12002 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
12003 | if (bytes == 0) |
12004 | /* Success, but no bytes, means end-of-file. */ | |
12005 | break; | |
12006 | if (bytes == -1) | |
12007 | remote_hostio_error (remote_errno); | |
12008 | ||
12009 | offset += bytes; | |
12010 | ||
d419f42d | 12011 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12012 | if (bytes == 0) |
12013 | perror_with_name (local_file); | |
12014 | } | |
12015 | ||
12016 | discard_cleanups (close_cleanup); | |
df39ea25 | 12017 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12018 | remote_hostio_error (remote_errno); |
12019 | ||
12020 | if (from_tty) | |
12021 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12022 | do_cleanups (back_to); | |
12023 | } | |
12024 | ||
12025 | void | |
12026 | remote_file_delete (const char *remote_file, int from_tty) | |
12027 | { | |
12028 | int retcode, remote_errno; | |
5d93a237 | 12029 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12030 | |
5d93a237 | 12031 | if (!rs->remote_desc) |
a6b151f1 DJ |
12032 | error (_("command can only be used with remote target")); |
12033 | ||
dbbca37d | 12034 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12035 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12036 | if (retcode == -1) |
12037 | remote_hostio_error (remote_errno); | |
12038 | ||
12039 | if (from_tty) | |
12040 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12041 | } | |
12042 | ||
12043 | static void | |
12044 | remote_put_command (char *args, int from_tty) | |
12045 | { | |
12046 | struct cleanup *back_to; | |
12047 | char **argv; | |
12048 | ||
d1a41061 PP |
12049 | if (args == NULL) |
12050 | error_no_arg (_("file to put")); | |
12051 | ||
12052 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
12053 | back_to = make_cleanup_freeargv (argv); |
12054 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
12055 | error (_("Invalid parameters to remote put")); | |
12056 | ||
12057 | remote_file_put (argv[0], argv[1], from_tty); | |
12058 | ||
12059 | do_cleanups (back_to); | |
12060 | } | |
12061 | ||
12062 | static void | |
12063 | remote_get_command (char *args, int from_tty) | |
12064 | { | |
12065 | struct cleanup *back_to; | |
12066 | char **argv; | |
12067 | ||
d1a41061 PP |
12068 | if (args == NULL) |
12069 | error_no_arg (_("file to get")); | |
12070 | ||
12071 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
12072 | back_to = make_cleanup_freeargv (argv); |
12073 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
12074 | error (_("Invalid parameters to remote get")); | |
12075 | ||
12076 | remote_file_get (argv[0], argv[1], from_tty); | |
12077 | ||
12078 | do_cleanups (back_to); | |
12079 | } | |
12080 | ||
12081 | static void | |
12082 | remote_delete_command (char *args, int from_tty) | |
12083 | { | |
12084 | struct cleanup *back_to; | |
12085 | char **argv; | |
12086 | ||
d1a41061 PP |
12087 | if (args == NULL) |
12088 | error_no_arg (_("file to delete")); | |
12089 | ||
12090 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
12091 | back_to = make_cleanup_freeargv (argv); |
12092 | if (argv[0] == NULL || argv[1] != NULL) | |
12093 | error (_("Invalid parameters to remote delete")); | |
12094 | ||
12095 | remote_file_delete (argv[0], from_tty); | |
12096 | ||
12097 | do_cleanups (back_to); | |
12098 | } | |
12099 | ||
12100 | static void | |
12101 | remote_command (char *args, int from_tty) | |
12102 | { | |
635c7e8a | 12103 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12104 | } |
12105 | ||
b2175913 | 12106 | static int |
19db3e69 | 12107 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 12108 | { |
4082afcc PA |
12109 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12110 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
12111 | return 1; |
12112 | else | |
12113 | return 0; | |
b2175913 MS |
12114 | } |
12115 | ||
74531fed | 12116 | static int |
2a9a2795 | 12117 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
12118 | { |
12119 | return 1; | |
12120 | } | |
12121 | ||
03583c20 | 12122 | static int |
2bfc0540 | 12123 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
12124 | { |
12125 | /* Only supported in extended mode. */ | |
12126 | return 0; | |
12127 | } | |
12128 | ||
8a305172 | 12129 | static int |
86ce2668 | 12130 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
12131 | { |
12132 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12133 | |
8020350c | 12134 | return remote_multi_process_p (rs); |
8a305172 PA |
12135 | } |
12136 | ||
70221824 | 12137 | static int |
782b2b07 SS |
12138 | remote_supports_cond_tracepoints (void) |
12139 | { | |
4082afcc | 12140 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12141 | } |
12142 | ||
3788aec7 | 12143 | static int |
efcc2da7 | 12144 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 12145 | { |
4082afcc | 12146 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12147 | } |
12148 | ||
70221824 | 12149 | static int |
7a697b8d SS |
12150 | remote_supports_fast_tracepoints (void) |
12151 | { | |
4082afcc | 12152 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12153 | } |
12154 | ||
0fb4aa4b PA |
12155 | static int |
12156 | remote_supports_static_tracepoints (void) | |
12157 | { | |
4082afcc | 12158 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12159 | } |
12160 | ||
1e4d1764 YQ |
12161 | static int |
12162 | remote_supports_install_in_trace (void) | |
12163 | { | |
4082afcc | 12164 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12165 | } |
12166 | ||
d248b706 | 12167 | static int |
7d178d6a | 12168 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 12169 | { |
4082afcc PA |
12170 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12171 | == PACKET_ENABLE); | |
d248b706 KY |
12172 | } |
12173 | ||
3065dfb6 | 12174 | static int |
6de37a3a | 12175 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 12176 | { |
4082afcc | 12177 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12178 | } |
12179 | ||
d3ce09f5 | 12180 | static int |
78eff0ec | 12181 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 12182 | { |
4082afcc | 12183 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12184 | } |
12185 | ||
35b1e5cc | 12186 | static void |
ecae04e1 | 12187 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
12188 | { |
12189 | putpkt ("QTinit"); | |
12190 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 12191 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
12192 | error (_("Target does not support this command.")); |
12193 | } | |
12194 | ||
12195 | static void free_actions_list (char **actions_list); | |
12196 | static void free_actions_list_cleanup_wrapper (void *); | |
12197 | static void | |
12198 | free_actions_list_cleanup_wrapper (void *al) | |
12199 | { | |
19ba03f4 | 12200 | free_actions_list ((char **) al); |
35b1e5cc SS |
12201 | } |
12202 | ||
12203 | static void | |
12204 | free_actions_list (char **actions_list) | |
12205 | { | |
12206 | int ndx; | |
12207 | ||
12208 | if (actions_list == 0) | |
12209 | return; | |
12210 | ||
12211 | for (ndx = 0; actions_list[ndx]; ndx++) | |
12212 | xfree (actions_list[ndx]); | |
12213 | ||
12214 | xfree (actions_list); | |
12215 | } | |
12216 | ||
409873ef SS |
12217 | /* Recursive routine to walk through command list including loops, and |
12218 | download packets for each command. */ | |
12219 | ||
12220 | static void | |
12221 | remote_download_command_source (int num, ULONGEST addr, | |
12222 | struct command_line *cmds) | |
12223 | { | |
12224 | struct remote_state *rs = get_remote_state (); | |
12225 | struct command_line *cmd; | |
12226 | ||
12227 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12228 | { | |
0df8b418 | 12229 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12230 | strcpy (rs->buf, "QTDPsrc:"); |
12231 | encode_source_string (num, addr, "cmd", cmd->line, | |
12232 | rs->buf + strlen (rs->buf), | |
12233 | rs->buf_size - strlen (rs->buf)); | |
12234 | putpkt (rs->buf); | |
12235 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12236 | if (strcmp (target_buf, "OK")) | |
12237 | warning (_("Target does not support source download.")); | |
12238 | ||
12239 | if (cmd->control_type == while_control | |
12240 | || cmd->control_type == while_stepping_control) | |
12241 | { | |
12242 | remote_download_command_source (num, addr, *cmd->body_list); | |
12243 | ||
0df8b418 | 12244 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12245 | strcpy (rs->buf, "QTDPsrc:"); |
12246 | encode_source_string (num, addr, "cmd", "end", | |
12247 | rs->buf + strlen (rs->buf), | |
12248 | rs->buf_size - strlen (rs->buf)); | |
12249 | putpkt (rs->buf); | |
12250 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12251 | if (strcmp (target_buf, "OK")) | |
12252 | warning (_("Target does not support source download.")); | |
12253 | } | |
12254 | } | |
12255 | } | |
12256 | ||
35b1e5cc | 12257 | static void |
548f7808 | 12258 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 12259 | { |
bba74b36 | 12260 | #define BUF_SIZE 2048 |
e8ba3115 | 12261 | |
35b1e5cc | 12262 | CORE_ADDR tpaddr; |
409873ef | 12263 | char addrbuf[40]; |
bba74b36 | 12264 | char buf[BUF_SIZE]; |
35b1e5cc SS |
12265 | char **tdp_actions; |
12266 | char **stepping_actions; | |
12267 | int ndx; | |
12268 | struct cleanup *old_chain = NULL; | |
35b1e5cc | 12269 | char *pkt; |
e8ba3115 | 12270 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12271 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 12272 | |
dc673c81 | 12273 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12274 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
12275 | tdp_actions); | |
12276 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
12277 | stepping_actions); | |
12278 | ||
12279 | tpaddr = loc->address; | |
12280 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12281 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12282 | addrbuf, /* address */ | |
12283 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12284 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12285 | /* Fast tracepoints are mostly handled by the target, but we can |
12286 | tell the target how big of an instruction block should be moved | |
12287 | around. */ | |
12288 | if (b->type == bp_fast_tracepoint) | |
12289 | { | |
12290 | /* Only test for support at download time; we may not know | |
12291 | target capabilities at definition time. */ | |
12292 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12293 | { |
6b940e6a PL |
12294 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12295 | NULL)) | |
bba74b36 | 12296 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12297 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12298 | else |
e8ba3115 YQ |
12299 | /* If it passed validation at definition but fails now, |
12300 | something is very wrong. */ | |
12301 | internal_error (__FILE__, __LINE__, | |
12302 | _("Fast tracepoint not " | |
12303 | "valid during download")); | |
35b1e5cc | 12304 | } |
e8ba3115 YQ |
12305 | else |
12306 | /* Fast tracepoints are functionally identical to regular | |
12307 | tracepoints, so don't take lack of support as a reason to | |
12308 | give up on the trace run. */ | |
12309 | warning (_("Target does not support fast tracepoints, " | |
12310 | "downloading %d as regular tracepoint"), b->number); | |
12311 | } | |
12312 | else if (b->type == bp_static_tracepoint) | |
12313 | { | |
12314 | /* Only test for support at download time; we may not know | |
12315 | target capabilities at definition time. */ | |
12316 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12317 | { |
e8ba3115 | 12318 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12319 | |
e8ba3115 YQ |
12320 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12321 | strcat (buf, ":S"); | |
0fb4aa4b | 12322 | else |
e8ba3115 | 12323 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12324 | } |
e8ba3115 YQ |
12325 | else |
12326 | /* Fast tracepoints are functionally identical to regular | |
12327 | tracepoints, so don't take lack of support as a reason | |
12328 | to give up on the trace run. */ | |
12329 | error (_("Target does not support static tracepoints")); | |
12330 | } | |
12331 | /* If the tracepoint has a conditional, make it into an agent | |
12332 | expression and append to the definition. */ | |
12333 | if (loc->cond) | |
12334 | { | |
12335 | /* Only test support at download time, we may not know target | |
12336 | capabilities at definition time. */ | |
12337 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12338 | { |
833177a4 | 12339 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12340 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12341 | aexpr->len); | |
e8ba3115 YQ |
12342 | pkt = buf + strlen (buf); |
12343 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
12344 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
12345 | *pkt = '\0'; | |
35b1e5cc | 12346 | } |
e8ba3115 YQ |
12347 | else |
12348 | warning (_("Target does not support conditional tracepoints, " | |
12349 | "ignoring tp %d cond"), b->number); | |
12350 | } | |
35b1e5cc | 12351 | |
d9b3f62e | 12352 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12353 | strcat (buf, "-"); |
12354 | putpkt (buf); | |
12355 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12356 | if (strcmp (target_buf, "OK")) | |
12357 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 12358 | |
e8ba3115 YQ |
12359 | /* do_single_steps (t); */ |
12360 | if (tdp_actions) | |
12361 | { | |
12362 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 12363 | { |
e8ba3115 | 12364 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12365 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
12366 | b->number, addrbuf, /* address */ | |
12367 | tdp_actions[ndx], | |
12368 | ((tdp_actions[ndx + 1] || stepping_actions) | |
12369 | ? '-' : 0)); | |
e8ba3115 YQ |
12370 | putpkt (buf); |
12371 | remote_get_noisy_reply (&target_buf, | |
12372 | &target_buf_size); | |
12373 | if (strcmp (target_buf, "OK")) | |
12374 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12375 | } |
e8ba3115 YQ |
12376 | } |
12377 | if (stepping_actions) | |
12378 | { | |
12379 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 12380 | { |
e8ba3115 | 12381 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12382 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
12383 | b->number, addrbuf, /* address */ | |
12384 | ((ndx == 0) ? "S" : ""), | |
12385 | stepping_actions[ndx], | |
12386 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
12387 | putpkt (buf); |
12388 | remote_get_noisy_reply (&target_buf, | |
12389 | &target_buf_size); | |
12390 | if (strcmp (target_buf, "OK")) | |
12391 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12392 | } |
e8ba3115 | 12393 | } |
409873ef | 12394 | |
4082afcc | 12395 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12396 | { |
f00aae0f | 12397 | if (b->location != NULL) |
409873ef | 12398 | { |
e8ba3115 | 12399 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12400 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12401 | event_location_to_string (b->location.get ()), |
f00aae0f | 12402 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 YQ |
12403 | putpkt (buf); |
12404 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12405 | if (strcmp (target_buf, "OK")) | |
12406 | warning (_("Target does not support source download.")); | |
409873ef | 12407 | } |
e8ba3115 YQ |
12408 | if (b->cond_string) |
12409 | { | |
12410 | strcpy (buf, "QTDPsrc:"); | |
12411 | encode_source_string (b->number, loc->address, | |
12412 | "cond", b->cond_string, buf + strlen (buf), | |
12413 | 2048 - strlen (buf)); | |
12414 | putpkt (buf); | |
12415 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12416 | if (strcmp (target_buf, "OK")) | |
12417 | warning (_("Target does not support source download.")); | |
12418 | } | |
12419 | remote_download_command_source (b->number, loc->address, | |
12420 | breakpoint_commands (b)); | |
35b1e5cc | 12421 | } |
e8ba3115 YQ |
12422 | |
12423 | do_cleanups (old_chain); | |
35b1e5cc SS |
12424 | } |
12425 | ||
1e4d1764 | 12426 | static int |
a52a8357 | 12427 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12428 | { |
1e51243a PA |
12429 | struct remote_state *rs = get_remote_state (); |
12430 | struct trace_status *ts; | |
12431 | int status; | |
12432 | ||
12433 | /* Don't try to install tracepoints until we've relocated our | |
12434 | symbols, and fetched and merged the target's tracepoint list with | |
12435 | ours. */ | |
12436 | if (rs->starting_up) | |
12437 | return 0; | |
12438 | ||
12439 | ts = current_trace_status (); | |
8bd200f1 | 12440 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12441 | |
12442 | if (status == -1 || !ts->running_known || !ts->running) | |
12443 | return 0; | |
12444 | ||
12445 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12446 | installing tracepoint in trace, we have to return. */ | |
12447 | if (!remote_supports_install_in_trace ()) | |
12448 | return 0; | |
12449 | ||
12450 | return 1; | |
12451 | } | |
12452 | ||
12453 | ||
35b1e5cc | 12454 | static void |
559d2b81 TT |
12455 | remote_download_trace_state_variable (struct target_ops *self, |
12456 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
12457 | { |
12458 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12459 | char *p; |
35b1e5cc | 12460 | |
bba74b36 YQ |
12461 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
12462 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
12463 | tsv->builtin); | |
00bf0b85 SS |
12464 | p = rs->buf + strlen (rs->buf); |
12465 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
12466 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 12467 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 12468 | *p++ = '\0'; |
35b1e5cc SS |
12469 | putpkt (rs->buf); |
12470 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12471 | if (*target_buf == '\0') |
12472 | error (_("Target does not support this command.")); | |
12473 | if (strcmp (target_buf, "OK") != 0) | |
12474 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
12475 | } |
12476 | ||
d248b706 | 12477 | static void |
46670d57 TT |
12478 | remote_enable_tracepoint (struct target_ops *self, |
12479 | struct bp_location *location) | |
d248b706 KY |
12480 | { |
12481 | struct remote_state *rs = get_remote_state (); | |
12482 | char addr_buf[40]; | |
12483 | ||
12484 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12485 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12486 | location->owner->number, addr_buf); | |
d248b706 KY |
12487 | putpkt (rs->buf); |
12488 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12489 | if (*rs->buf == '\0') | |
12490 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12491 | if (strcmp (rs->buf, "OK") != 0) | |
12492 | error (_("Error on target while enabling tracepoint.")); | |
12493 | } | |
12494 | ||
12495 | static void | |
780b049c TT |
12496 | remote_disable_tracepoint (struct target_ops *self, |
12497 | struct bp_location *location) | |
d248b706 KY |
12498 | { |
12499 | struct remote_state *rs = get_remote_state (); | |
12500 | char addr_buf[40]; | |
12501 | ||
12502 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12503 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12504 | location->owner->number, addr_buf); | |
d248b706 KY |
12505 | putpkt (rs->buf); |
12506 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12507 | if (*rs->buf == '\0') | |
12508 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12509 | if (strcmp (rs->buf, "OK") != 0) | |
12510 | error (_("Error on target while disabling tracepoint.")); | |
12511 | } | |
12512 | ||
35b1e5cc | 12513 | static void |
583f9a86 | 12514 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12515 | { |
12516 | asection *s; | |
81b9b86e | 12517 | bfd *abfd = NULL; |
35b1e5cc | 12518 | bfd_size_type size; |
608bcef2 | 12519 | bfd_vma vma; |
35b1e5cc | 12520 | int anysecs = 0; |
c2fa21f1 | 12521 | int offset = 0; |
35b1e5cc SS |
12522 | |
12523 | if (!exec_bfd) | |
12524 | return; /* No information to give. */ | |
12525 | ||
12526 | strcpy (target_buf, "QTro"); | |
9779ab84 | 12527 | offset = strlen (target_buf); |
35b1e5cc SS |
12528 | for (s = exec_bfd->sections; s; s = s->next) |
12529 | { | |
12530 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12531 | int sec_length; |
35b1e5cc SS |
12532 | |
12533 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12534 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12535 | (s->flags & SEC_READONLY) == 0) |
12536 | continue; | |
12537 | ||
12538 | anysecs = 1; | |
81b9b86e | 12539 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12540 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12541 | sprintf_vma (tmp1, vma); |
12542 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
12543 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
12544 | if (offset + sec_length + 1 > target_buf_size) | |
12545 | { | |
4082afcc | 12546 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12547 | warning (_("\ |
c2fa21f1 HZ |
12548 | Too many sections for read-only sections definition packet.")); |
12549 | break; | |
12550 | } | |
bba74b36 YQ |
12551 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
12552 | tmp1, tmp2); | |
c2fa21f1 | 12553 | offset += sec_length; |
35b1e5cc SS |
12554 | } |
12555 | if (anysecs) | |
12556 | { | |
12557 | putpkt (target_buf); | |
12558 | getpkt (&target_buf, &target_buf_size, 0); | |
12559 | } | |
12560 | } | |
12561 | ||
12562 | static void | |
e2d1aae3 | 12563 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
12564 | { |
12565 | putpkt ("QTStart"); | |
12566 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12567 | if (*target_buf == '\0') |
12568 | error (_("Target does not support this command.")); | |
12569 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12570 | error (_("Bogus reply from target: %s"), target_buf); |
12571 | } | |
12572 | ||
12573 | static int | |
8bd200f1 | 12574 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12575 | { |
953b98d1 | 12576 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12577 | char *p = NULL; |
0df8b418 | 12578 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12579 | extern int trace_regblock_size; |
bd3eecc3 PA |
12580 | enum packet_result result; |
12581 | ||
4082afcc | 12582 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12583 | return -1; |
a744cf53 | 12584 | |
00bf0b85 SS |
12585 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
12586 | ||
049dc89b JK |
12587 | putpkt ("qTStatus"); |
12588 | ||
492d29ea | 12589 | TRY |
67f41397 JK |
12590 | { |
12591 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12592 | } | |
492d29ea | 12593 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12594 | { |
598d3636 JK |
12595 | if (ex.error != TARGET_CLOSE_ERROR) |
12596 | { | |
12597 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12598 | return -1; | |
12599 | } | |
12600 | throw_exception (ex); | |
67f41397 | 12601 | } |
492d29ea | 12602 | END_CATCH |
00bf0b85 | 12603 | |
bd3eecc3 PA |
12604 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12605 | ||
00bf0b85 | 12606 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12607 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12608 | return -1; |
35b1e5cc | 12609 | |
00bf0b85 | 12610 | /* We're working with a live target. */ |
f5911ea1 | 12611 | ts->filename = NULL; |
00bf0b85 | 12612 | |
00bf0b85 | 12613 | if (*p++ != 'T') |
35b1e5cc SS |
12614 | error (_("Bogus trace status reply from target: %s"), target_buf); |
12615 | ||
84cebc4a YQ |
12616 | /* Function 'parse_trace_status' sets default value of each field of |
12617 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12618 | parse_trace_status (p, ts); |
12619 | ||
12620 | return ts->running; | |
35b1e5cc SS |
12621 | } |
12622 | ||
70221824 | 12623 | static void |
db90e85c | 12624 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12625 | struct uploaded_tp *utp) |
12626 | { | |
12627 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12628 | char *reply; |
12629 | struct bp_location *loc; | |
12630 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12631 | size_t size = get_remote_packet_size (); |
f196051f SS |
12632 | |
12633 | if (tp) | |
12634 | { | |
c1fc2657 | 12635 | tp->hit_count = 0; |
f196051f | 12636 | tp->traceframe_usage = 0; |
c1fc2657 | 12637 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
12638 | { |
12639 | /* If the tracepoint was never downloaded, don't go asking for | |
12640 | any status. */ | |
12641 | if (tp->number_on_target == 0) | |
12642 | continue; | |
bba74b36 YQ |
12643 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12644 | phex_nz (loc->address, 0)); | |
f196051f SS |
12645 | putpkt (rs->buf); |
12646 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12647 | if (reply && *reply) | |
12648 | { | |
12649 | if (*reply == 'V') | |
12650 | parse_tracepoint_status (reply + 1, bp, utp); | |
12651 | } | |
12652 | } | |
12653 | } | |
12654 | else if (utp) | |
12655 | { | |
12656 | utp->hit_count = 0; | |
12657 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12658 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12659 | phex_nz (utp->addr, 0)); | |
f196051f SS |
12660 | putpkt (rs->buf); |
12661 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12662 | if (reply && *reply) | |
12663 | { | |
12664 | if (*reply == 'V') | |
12665 | parse_tracepoint_status (reply + 1, bp, utp); | |
12666 | } | |
12667 | } | |
12668 | } | |
12669 | ||
35b1e5cc | 12670 | static void |
74499f1b | 12671 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
12672 | { |
12673 | putpkt ("QTStop"); | |
12674 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12675 | if (*target_buf == '\0') |
12676 | error (_("Target does not support this command.")); | |
12677 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12678 | error (_("Bogus reply from target: %s"), target_buf); |
12679 | } | |
12680 | ||
12681 | static int | |
bd4c6793 TT |
12682 | remote_trace_find (struct target_ops *self, |
12683 | enum trace_find_type type, int num, | |
cc5925ad | 12684 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12685 | int *tpp) |
12686 | { | |
12687 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12688 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12689 | char *p, *reply; |
12690 | int target_frameno = -1, target_tracept = -1; | |
12691 | ||
e6e4e701 PA |
12692 | /* Lookups other than by absolute frame number depend on the current |
12693 | trace selected, so make sure it is correct on the remote end | |
12694 | first. */ | |
12695 | if (type != tfind_number) | |
12696 | set_remote_traceframe (); | |
12697 | ||
35b1e5cc SS |
12698 | p = rs->buf; |
12699 | strcpy (p, "QTFrame:"); | |
12700 | p = strchr (p, '\0'); | |
12701 | switch (type) | |
12702 | { | |
12703 | case tfind_number: | |
bba74b36 | 12704 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12705 | break; |
12706 | case tfind_pc: | |
bba74b36 | 12707 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12708 | break; |
12709 | case tfind_tp: | |
bba74b36 | 12710 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12711 | break; |
12712 | case tfind_range: | |
bba74b36 YQ |
12713 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12714 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12715 | break; |
12716 | case tfind_outside: | |
bba74b36 YQ |
12717 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12718 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12719 | break; |
12720 | default: | |
9b20d036 | 12721 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12722 | } |
12723 | ||
12724 | putpkt (rs->buf); | |
2f65bcb7 | 12725 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
12726 | if (*reply == '\0') |
12727 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12728 | |
12729 | while (reply && *reply) | |
12730 | switch (*reply) | |
12731 | { | |
12732 | case 'F': | |
f197e0f1 VP |
12733 | p = ++reply; |
12734 | target_frameno = (int) strtol (p, &reply, 16); | |
12735 | if (reply == p) | |
12736 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12737 | /* Don't update our remote traceframe number cache on failure |
12738 | to select a remote traceframe. */ | |
f197e0f1 VP |
12739 | if (target_frameno == -1) |
12740 | return -1; | |
35b1e5cc SS |
12741 | break; |
12742 | case 'T': | |
f197e0f1 VP |
12743 | p = ++reply; |
12744 | target_tracept = (int) strtol (p, &reply, 16); | |
12745 | if (reply == p) | |
12746 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12747 | break; |
12748 | case 'O': /* "OK"? */ | |
12749 | if (reply[1] == 'K' && reply[2] == '\0') | |
12750 | reply += 2; | |
12751 | else | |
12752 | error (_("Bogus reply from target: %s"), reply); | |
12753 | break; | |
12754 | default: | |
12755 | error (_("Bogus reply from target: %s"), reply); | |
12756 | } | |
12757 | if (tpp) | |
12758 | *tpp = target_tracept; | |
e6e4e701 | 12759 | |
262e1174 | 12760 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12761 | return target_frameno; |
12762 | } | |
12763 | ||
12764 | static int | |
4011015b TT |
12765 | remote_get_trace_state_variable_value (struct target_ops *self, |
12766 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12767 | { |
12768 | struct remote_state *rs = get_remote_state (); | |
12769 | char *reply; | |
12770 | ULONGEST uval; | |
12771 | ||
e6e4e701 PA |
12772 | set_remote_traceframe (); |
12773 | ||
bba74b36 | 12774 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12775 | putpkt (rs->buf); |
12776 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12777 | if (reply && *reply) | |
12778 | { | |
12779 | if (*reply == 'V') | |
12780 | { | |
12781 | unpack_varlen_hex (reply + 1, &uval); | |
12782 | *val = (LONGEST) uval; | |
12783 | return 1; | |
12784 | } | |
12785 | } | |
12786 | return 0; | |
12787 | } | |
12788 | ||
00bf0b85 | 12789 | static int |
dc3decaf | 12790 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12791 | { |
12792 | struct remote_state *rs = get_remote_state (); | |
12793 | char *p, *reply; | |
12794 | ||
12795 | p = rs->buf; | |
12796 | strcpy (p, "QTSave:"); | |
12797 | p += strlen (p); | |
12798 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12799 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12800 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12801 | *p++ = '\0'; |
12802 | putpkt (rs->buf); | |
ad91cd99 | 12803 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12804 | if (*reply == '\0') |
ad91cd99 PA |
12805 | error (_("Target does not support this command.")); |
12806 | if (strcmp (reply, "OK") != 0) | |
12807 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12808 | return 0; |
12809 | } | |
12810 | ||
12811 | /* This is basically a memory transfer, but needs to be its own packet | |
12812 | because we don't know how the target actually organizes its trace | |
12813 | memory, plus we want to be able to ask for as much as possible, but | |
12814 | not be unhappy if we don't get as much as we ask for. */ | |
12815 | ||
12816 | static LONGEST | |
88ee6f45 TT |
12817 | remote_get_raw_trace_data (struct target_ops *self, |
12818 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12819 | { |
12820 | struct remote_state *rs = get_remote_state (); | |
12821 | char *reply; | |
12822 | char *p; | |
12823 | int rslt; | |
12824 | ||
12825 | p = rs->buf; | |
12826 | strcpy (p, "qTBuffer:"); | |
12827 | p += strlen (p); | |
12828 | p += hexnumstr (p, offset); | |
12829 | *p++ = ','; | |
12830 | p += hexnumstr (p, len); | |
12831 | *p++ = '\0'; | |
12832 | ||
12833 | putpkt (rs->buf); | |
12834 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12835 | if (reply && *reply) | |
12836 | { | |
12837 | /* 'l' by itself means we're at the end of the buffer and | |
12838 | there is nothing more to get. */ | |
12839 | if (*reply == 'l') | |
12840 | return 0; | |
12841 | ||
12842 | /* Convert the reply into binary. Limit the number of bytes to | |
12843 | convert according to our passed-in buffer size, rather than | |
12844 | what was returned in the packet; if the target is | |
12845 | unexpectedly generous and gives us a bigger reply than we | |
12846 | asked for, we don't want to crash. */ | |
12847 | rslt = hex2bin (target_buf, buf, len); | |
12848 | return rslt; | |
12849 | } | |
12850 | ||
12851 | /* Something went wrong, flag as an error. */ | |
12852 | return -1; | |
12853 | } | |
12854 | ||
35b1e5cc | 12855 | static void |
37b25738 | 12856 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12857 | { |
12858 | struct remote_state *rs = get_remote_state (); | |
12859 | ||
4082afcc | 12860 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12861 | { |
ad91cd99 PA |
12862 | char *reply; |
12863 | ||
bba74b36 | 12864 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12865 | putpkt (rs->buf); |
ad91cd99 PA |
12866 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12867 | if (*reply == '\0') | |
33da3f1c | 12868 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12869 | if (strcmp (reply, "OK") != 0) |
12870 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12871 | } |
12872 | else if (val) | |
12873 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12874 | } |
12875 | ||
dc146f7c VP |
12876 | static int |
12877 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12878 | { | |
12879 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12880 | |
fe978cb0 PA |
12881 | if (info && info->priv) |
12882 | return info->priv->core; | |
dc146f7c VP |
12883 | return -1; |
12884 | } | |
12885 | ||
4daf5ac0 | 12886 | static void |
736d5b1f | 12887 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12888 | { |
12889 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12890 | char *reply; |
4daf5ac0 | 12891 | |
bba74b36 | 12892 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12893 | putpkt (rs->buf); |
ad91cd99 PA |
12894 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12895 | if (*reply == '\0') | |
4daf5ac0 | 12896 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12897 | if (strcmp (reply, "OK") != 0) |
12898 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12899 | } |
12900 | ||
b3b9301e | 12901 | static struct traceframe_info * |
a893e81f | 12902 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12903 | { |
12904 | char *text; | |
12905 | ||
12906 | text = target_read_stralloc (¤t_target, | |
12907 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12908 | if (text != NULL) | |
12909 | { | |
12910 | struct traceframe_info *info; | |
12911 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12912 | ||
12913 | info = parse_traceframe_info (text); | |
12914 | do_cleanups (back_to); | |
12915 | return info; | |
12916 | } | |
12917 | ||
12918 | return NULL; | |
12919 | } | |
12920 | ||
405f8e94 SS |
12921 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12922 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12923 | if the packet is not supported, and 0 if the minimum instruction | |
12924 | length is unknown. */ | |
12925 | ||
12926 | static int | |
0e67620a | 12927 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12928 | { |
12929 | struct remote_state *rs = get_remote_state (); | |
12930 | char *reply; | |
12931 | ||
e886a173 PA |
12932 | /* If we're not debugging a process yet, the IPA can't be |
12933 | loaded. */ | |
12934 | if (!target_has_execution) | |
12935 | return 0; | |
12936 | ||
12937 | /* Make sure the remote is pointing at the right process. */ | |
12938 | set_general_process (); | |
12939 | ||
bba74b36 | 12940 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12941 | putpkt (rs->buf); |
12942 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12943 | if (*reply == '\0') | |
12944 | return -1; | |
12945 | else | |
12946 | { | |
12947 | ULONGEST min_insn_len; | |
12948 | ||
12949 | unpack_varlen_hex (reply, &min_insn_len); | |
12950 | ||
12951 | return (int) min_insn_len; | |
12952 | } | |
12953 | } | |
12954 | ||
f6f899bf | 12955 | static void |
4da384be | 12956 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12957 | { |
4082afcc | 12958 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12959 | { |
12960 | struct remote_state *rs = get_remote_state (); | |
12961 | char *buf = rs->buf; | |
12962 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12963 | enum packet_result result; | |
12964 | ||
12965 | gdb_assert (val >= 0 || val == -1); | |
12966 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12967 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12968 | if (val < 0) | |
12969 | { | |
12970 | *buf++ = '-'; | |
12971 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12972 | } | |
12973 | else | |
12974 | buf += hexnumstr (buf, (ULONGEST) val); | |
12975 | ||
12976 | putpkt (rs->buf); | |
12977 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12978 | result = packet_ok (rs->buf, | |
12979 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12980 | ||
12981 | if (result != PACKET_OK) | |
12982 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12983 | } | |
12984 | } | |
12985 | ||
f196051f | 12986 | static int |
d9e68a2c TT |
12987 | remote_set_trace_notes (struct target_ops *self, |
12988 | const char *user, const char *notes, | |
ca623f82 | 12989 | const char *stop_notes) |
f196051f SS |
12990 | { |
12991 | struct remote_state *rs = get_remote_state (); | |
12992 | char *reply; | |
12993 | char *buf = rs->buf; | |
12994 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12995 | int nbytes; | |
12996 | ||
12997 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12998 | if (user) | |
12999 | { | |
13000 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13001 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13002 | buf += 2 * nbytes; |
13003 | *buf++ = ';'; | |
13004 | } | |
13005 | if (notes) | |
13006 | { | |
13007 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13008 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13009 | buf += 2 * nbytes; |
13010 | *buf++ = ';'; | |
13011 | } | |
13012 | if (stop_notes) | |
13013 | { | |
13014 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13015 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13016 | buf += 2 * nbytes; |
13017 | *buf++ = ';'; | |
13018 | } | |
13019 | /* Ensure the buffer is terminated. */ | |
13020 | *buf = '\0'; | |
13021 | ||
13022 | putpkt (rs->buf); | |
13023 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
13024 | if (*reply == '\0') | |
13025 | return 0; | |
13026 | ||
13027 | if (strcmp (reply, "OK") != 0) | |
13028 | error (_("Bogus reply from target: %s"), reply); | |
13029 | ||
13030 | return 1; | |
13031 | } | |
13032 | ||
d1feda86 | 13033 | static int |
2c152180 | 13034 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 13035 | { |
4082afcc | 13036 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13037 | { |
13038 | struct remote_state *rs = get_remote_state (); | |
13039 | ||
13040 | /* If the stub supports QAgent. */ | |
bba74b36 | 13041 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13042 | putpkt (rs->buf); |
13043 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13044 | ||
13045 | if (strcmp (rs->buf, "OK") == 0) | |
13046 | { | |
13047 | use_agent = use; | |
13048 | return 1; | |
13049 | } | |
13050 | } | |
13051 | ||
13052 | return 0; | |
13053 | } | |
13054 | ||
13055 | static int | |
fe38f897 | 13056 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 13057 | { |
4082afcc | 13058 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13059 | } |
13060 | ||
9accd112 MM |
13061 | struct btrace_target_info |
13062 | { | |
13063 | /* The ptid of the traced thread. */ | |
13064 | ptid_t ptid; | |
f4abbc16 MM |
13065 | |
13066 | /* The obtained branch trace configuration. */ | |
13067 | struct btrace_config conf; | |
9accd112 MM |
13068 | }; |
13069 | ||
f4abbc16 MM |
13070 | /* Reset our idea of our target's btrace configuration. */ |
13071 | ||
13072 | static void | |
13073 | remote_btrace_reset (void) | |
13074 | { | |
13075 | struct remote_state *rs = get_remote_state (); | |
13076 | ||
13077 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13078 | } | |
13079 | ||
9accd112 MM |
13080 | /* Check whether the target supports branch tracing. */ |
13081 | ||
13082 | static int | |
043c3577 | 13083 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 13084 | { |
4082afcc | 13085 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 13086 | return 0; |
4082afcc | 13087 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
13088 | return 0; |
13089 | ||
043c3577 MM |
13090 | switch (format) |
13091 | { | |
13092 | case BTRACE_FORMAT_NONE: | |
13093 | return 0; | |
13094 | ||
13095 | case BTRACE_FORMAT_BTS: | |
13096 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
13097 | |
13098 | case BTRACE_FORMAT_PT: | |
13099 | /* The trace is decoded on the host. Even if our target supports it, | |
13100 | we still need to have libipt to decode the trace. */ | |
13101 | #if defined (HAVE_LIBIPT) | |
13102 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
13103 | #else /* !defined (HAVE_LIBIPT) */ | |
13104 | return 0; | |
13105 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
13106 | } |
13107 | ||
13108 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
13109 | } |
13110 | ||
f4abbc16 MM |
13111 | /* Synchronize the configuration with the target. */ |
13112 | ||
13113 | static void | |
13114 | btrace_sync_conf (const struct btrace_config *conf) | |
13115 | { | |
d33501a5 MM |
13116 | struct packet_config *packet; |
13117 | struct remote_state *rs; | |
13118 | char *buf, *pos, *endbuf; | |
13119 | ||
13120 | rs = get_remote_state (); | |
13121 | buf = rs->buf; | |
13122 | endbuf = buf + get_remote_packet_size (); | |
13123 | ||
13124 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13125 | if (packet_config_support (packet) == PACKET_ENABLE | |
13126 | && conf->bts.size != rs->btrace_config.bts.size) | |
13127 | { | |
13128 | pos = buf; | |
13129 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13130 | conf->bts.size); | |
13131 | ||
13132 | putpkt (buf); | |
13133 | getpkt (&buf, &rs->buf_size, 0); | |
13134 | ||
13135 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13136 | { | |
13137 | if (buf[0] == 'E' && buf[1] == '.') | |
13138 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13139 | else | |
13140 | error (_("Failed to configure the BTS buffer size.")); | |
13141 | } | |
13142 | ||
13143 | rs->btrace_config.bts.size = conf->bts.size; | |
13144 | } | |
b20a6524 MM |
13145 | |
13146 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13147 | if (packet_config_support (packet) == PACKET_ENABLE | |
13148 | && conf->pt.size != rs->btrace_config.pt.size) | |
13149 | { | |
13150 | pos = buf; | |
13151 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13152 | conf->pt.size); | |
13153 | ||
13154 | putpkt (buf); | |
13155 | getpkt (&buf, &rs->buf_size, 0); | |
13156 | ||
13157 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13158 | { | |
13159 | if (buf[0] == 'E' && buf[1] == '.') | |
13160 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13161 | else | |
13162 | error (_("Failed to configure the trace buffer size.")); | |
13163 | } | |
13164 | ||
13165 | rs->btrace_config.pt.size = conf->pt.size; | |
13166 | } | |
f4abbc16 MM |
13167 | } |
13168 | ||
13169 | /* Read the current thread's btrace configuration from the target and | |
13170 | store it into CONF. */ | |
13171 | ||
13172 | static void | |
13173 | btrace_read_config (struct btrace_config *conf) | |
13174 | { | |
13175 | char *xml; | |
13176 | ||
13177 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 13178 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
13179 | if (xml != NULL) |
13180 | { | |
13181 | struct cleanup *cleanup; | |
13182 | ||
13183 | cleanup = make_cleanup (xfree, xml); | |
13184 | parse_xml_btrace_conf (conf, xml); | |
13185 | do_cleanups (cleanup); | |
13186 | } | |
13187 | } | |
13188 | ||
c0272db5 TW |
13189 | /* Maybe reopen target btrace. */ |
13190 | ||
13191 | static void | |
13192 | remote_btrace_maybe_reopen (void) | |
13193 | { | |
13194 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13195 | struct thread_info *tp; |
13196 | int btrace_target_pushed = 0; | |
13197 | int warned = 0; | |
13198 | ||
5ed8105e PA |
13199 | scoped_restore_current_thread restore_thread; |
13200 | ||
c0272db5 TW |
13201 | ALL_NON_EXITED_THREADS (tp) |
13202 | { | |
13203 | set_general_thread (tp->ptid); | |
13204 | ||
13205 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13206 | btrace_read_config (&rs->btrace_config); | |
13207 | ||
13208 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13209 | continue; | |
13210 | ||
13211 | #if !defined (HAVE_LIBIPT) | |
13212 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13213 | { | |
13214 | if (!warned) | |
13215 | { | |
13216 | warned = 1; | |
13217 | warning (_("GDB does not support Intel Processor Trace. " | |
13218 | "\"record\" will not work in this session.")); | |
13219 | } | |
13220 | ||
13221 | continue; | |
13222 | } | |
13223 | #endif /* !defined (HAVE_LIBIPT) */ | |
13224 | ||
13225 | /* Push target, once, but before anything else happens. This way our | |
13226 | changes to the threads will be cleaned up by unpushing the target | |
13227 | in case btrace_read_config () throws. */ | |
13228 | if (!btrace_target_pushed) | |
13229 | { | |
13230 | btrace_target_pushed = 1; | |
13231 | record_btrace_push_target (); | |
13232 | printf_filtered (_("Target is recording using %s.\n"), | |
13233 | btrace_format_string (rs->btrace_config.format)); | |
13234 | } | |
13235 | ||
13236 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13237 | tp->btrace.target->ptid = tp->ptid; | |
13238 | tp->btrace.target->conf = rs->btrace_config; | |
13239 | } | |
c0272db5 TW |
13240 | } |
13241 | ||
9accd112 MM |
13242 | /* Enable branch tracing. */ |
13243 | ||
13244 | static struct btrace_target_info * | |
f4abbc16 MM |
13245 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
13246 | const struct btrace_config *conf) | |
9accd112 MM |
13247 | { |
13248 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13249 | struct packet_config *packet = NULL; |
9accd112 MM |
13250 | struct remote_state *rs = get_remote_state (); |
13251 | char *buf = rs->buf; | |
13252 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13253 | ||
b20a6524 MM |
13254 | switch (conf->format) |
13255 | { | |
13256 | case BTRACE_FORMAT_BTS: | |
13257 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13258 | break; | |
13259 | ||
13260 | case BTRACE_FORMAT_PT: | |
13261 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13262 | break; | |
13263 | } | |
13264 | ||
13265 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13266 | error (_("Target does not support branch tracing.")); |
13267 | ||
f4abbc16 MM |
13268 | btrace_sync_conf (conf); |
13269 | ||
9accd112 MM |
13270 | set_general_thread (ptid); |
13271 | ||
13272 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13273 | putpkt (rs->buf); | |
13274 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13275 | ||
13276 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13277 | { | |
13278 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13279 | error (_("Could not enable branch tracing for %s: %s"), | |
13280 | target_pid_to_str (ptid), rs->buf + 2); | |
13281 | else | |
13282 | error (_("Could not enable branch tracing for %s."), | |
13283 | target_pid_to_str (ptid)); | |
13284 | } | |
13285 | ||
8d749320 | 13286 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13287 | tinfo->ptid = ptid; |
13288 | ||
f4abbc16 MM |
13289 | /* If we fail to read the configuration, we lose some information, but the |
13290 | tracing itself is not impacted. */ | |
492d29ea PA |
13291 | TRY |
13292 | { | |
13293 | btrace_read_config (&tinfo->conf); | |
13294 | } | |
13295 | CATCH (err, RETURN_MASK_ERROR) | |
13296 | { | |
13297 | if (err.message != NULL) | |
13298 | warning ("%s", err.message); | |
13299 | } | |
13300 | END_CATCH | |
f4abbc16 | 13301 | |
9accd112 MM |
13302 | return tinfo; |
13303 | } | |
13304 | ||
13305 | /* Disable branch tracing. */ | |
13306 | ||
13307 | static void | |
25e95349 TT |
13308 | remote_disable_btrace (struct target_ops *self, |
13309 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13310 | { |
13311 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13312 | struct remote_state *rs = get_remote_state (); | |
13313 | char *buf = rs->buf; | |
13314 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13315 | ||
4082afcc | 13316 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13317 | error (_("Target does not support branch tracing.")); |
13318 | ||
13319 | set_general_thread (tinfo->ptid); | |
13320 | ||
13321 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13322 | putpkt (rs->buf); | |
13323 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13324 | ||
13325 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13326 | { | |
13327 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13328 | error (_("Could not disable branch tracing for %s: %s"), | |
13329 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13330 | else | |
13331 | error (_("Could not disable branch tracing for %s."), | |
13332 | target_pid_to_str (tinfo->ptid)); | |
13333 | } | |
13334 | ||
13335 | xfree (tinfo); | |
13336 | } | |
13337 | ||
13338 | /* Teardown branch tracing. */ | |
13339 | ||
13340 | static void | |
1777056d TT |
13341 | remote_teardown_btrace (struct target_ops *self, |
13342 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13343 | { |
13344 | /* We must not talk to the target during teardown. */ | |
13345 | xfree (tinfo); | |
13346 | } | |
13347 | ||
13348 | /* Read the branch trace. */ | |
13349 | ||
969c39fb | 13350 | static enum btrace_error |
39c49f83 | 13351 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 13352 | struct btrace_data *btrace, |
969c39fb | 13353 | struct btrace_target_info *tinfo, |
9accd112 MM |
13354 | enum btrace_read_type type) |
13355 | { | |
13356 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
969c39fb | 13357 | struct cleanup *cleanup; |
9accd112 MM |
13358 | const char *annex; |
13359 | char *xml; | |
13360 | ||
4082afcc | 13361 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13362 | error (_("Target does not support branch tracing.")); |
13363 | ||
13364 | #if !defined(HAVE_LIBEXPAT) | |
13365 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13366 | #endif | |
13367 | ||
13368 | switch (type) | |
13369 | { | |
864089d2 | 13370 | case BTRACE_READ_ALL: |
9accd112 MM |
13371 | annex = "all"; |
13372 | break; | |
864089d2 | 13373 | case BTRACE_READ_NEW: |
9accd112 MM |
13374 | annex = "new"; |
13375 | break; | |
969c39fb MM |
13376 | case BTRACE_READ_DELTA: |
13377 | annex = "delta"; | |
13378 | break; | |
9accd112 MM |
13379 | default: |
13380 | internal_error (__FILE__, __LINE__, | |
13381 | _("Bad branch tracing read type: %u."), | |
13382 | (unsigned int) type); | |
13383 | } | |
13384 | ||
13385 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 13386 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
13387 | if (xml == NULL) |
13388 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 13389 | |
969c39fb | 13390 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 13391 | parse_xml_btrace (btrace, xml); |
969c39fb | 13392 | do_cleanups (cleanup); |
9accd112 | 13393 | |
969c39fb | 13394 | return BTRACE_ERR_NONE; |
9accd112 MM |
13395 | } |
13396 | ||
f4abbc16 MM |
13397 | static const struct btrace_config * |
13398 | remote_btrace_conf (struct target_ops *self, | |
13399 | const struct btrace_target_info *tinfo) | |
13400 | { | |
13401 | return &tinfo->conf; | |
13402 | } | |
13403 | ||
ced63ec0 | 13404 | static int |
5436ff03 | 13405 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 13406 | { |
4082afcc PA |
13407 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13408 | == PACKET_ENABLE); | |
ced63ec0 GB |
13409 | } |
13410 | ||
9dd130a0 TT |
13411 | /* Implementation of to_load. */ |
13412 | ||
13413 | static void | |
9cbe5fff | 13414 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
13415 | { |
13416 | generic_load (name, from_tty); | |
13417 | } | |
13418 | ||
c78fa86a GB |
13419 | /* Accepts an integer PID; returns a string representing a file that |
13420 | can be opened on the remote side to get the symbols for the child | |
13421 | process. Returns NULL if the operation is not supported. */ | |
13422 | ||
13423 | static char * | |
13424 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
13425 | { | |
13426 | static char *filename = NULL; | |
835205d0 GB |
13427 | struct inferior *inf; |
13428 | char *annex = NULL; | |
c78fa86a GB |
13429 | |
13430 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13431 | return NULL; | |
13432 | ||
13433 | if (filename != NULL) | |
13434 | xfree (filename); | |
13435 | ||
835205d0 GB |
13436 | inf = find_inferior_pid (pid); |
13437 | if (inf == NULL) | |
13438 | internal_error (__FILE__, __LINE__, | |
13439 | _("not currently attached to process %d"), pid); | |
13440 | ||
13441 | if (!inf->fake_pid_p) | |
13442 | { | |
13443 | const int annex_size = 9; | |
13444 | ||
224c3ddb | 13445 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13446 | xsnprintf (annex, annex_size, "%x", pid); |
13447 | } | |
13448 | ||
c78fa86a GB |
13449 | filename = target_read_stralloc (¤t_target, |
13450 | TARGET_OBJECT_EXEC_FILE, annex); | |
13451 | ||
13452 | return filename; | |
13453 | } | |
13454 | ||
750ce8d1 YQ |
13455 | /* Implement the to_can_do_single_step target_ops method. */ |
13456 | ||
13457 | static int | |
13458 | remote_can_do_single_step (struct target_ops *ops) | |
13459 | { | |
13460 | /* We can only tell whether target supports single step or not by | |
13461 | supported s and S vCont actions if the stub supports vContSupported | |
13462 | feature. If the stub doesn't support vContSupported feature, | |
13463 | we have conservatively to think target doesn't supports single | |
13464 | step. */ | |
13465 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13466 | { | |
13467 | struct remote_state *rs = get_remote_state (); | |
13468 | ||
13469 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13470 | remote_vcont_probe (rs); | |
13471 | ||
13472 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13473 | } | |
13474 | else | |
13475 | return 0; | |
13476 | } | |
13477 | ||
3a00c802 PA |
13478 | /* Implementation of the to_execution_direction method for the remote |
13479 | target. */ | |
13480 | ||
13481 | static enum exec_direction_kind | |
13482 | remote_execution_direction (struct target_ops *self) | |
13483 | { | |
13484 | struct remote_state *rs = get_remote_state (); | |
13485 | ||
13486 | return rs->last_resume_exec_dir; | |
13487 | } | |
13488 | ||
c906108c | 13489 | static void |
fba45db2 | 13490 | init_remote_ops (void) |
c906108c | 13491 | { |
c5aa993b | 13492 | remote_ops.to_shortname = "remote"; |
c906108c | 13493 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13494 | remote_ops.to_doc = |
c906108c | 13495 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13496 | Specify the serial device it is connected to\n\ |
13497 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13498 | remote_ops.to_open = remote_open; |
13499 | remote_ops.to_close = remote_close; | |
c906108c | 13500 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13501 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13502 | remote_ops.to_resume = remote_resume; |
85ad3aaf | 13503 | remote_ops.to_commit_resume = remote_commit_resume; |
c906108c SS |
13504 | remote_ops.to_wait = remote_wait; |
13505 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13506 | remote_ops.to_store_registers = remote_store_registers; | |
13507 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13508 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13509 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13510 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13511 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13512 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13513 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13514 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13515 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13516 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13517 | remote_ops.to_watchpoint_addr_within_range = |
13518 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13519 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13520 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13521 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13522 | remote_ops.to_region_ok_for_hw_watchpoint |
13523 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13524 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13525 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13526 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13527 | remote_ops.to_load = remote_load; |
c906108c | 13528 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13529 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13530 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13531 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13532 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13533 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13534 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13535 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13536 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13537 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13538 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13539 | remote_ops.to_interrupt = remote_interrupt; |
93692b58 | 13540 | remote_ops.to_pass_ctrlc = remote_pass_ctrlc; |
4b8a223f | 13541 | remote_ops.to_xfer_partial = remote_xfer_partial; |
09c98b44 | 13542 | remote_ops.to_get_memory_xfer_limit = remote_get_memory_xfer_limit; |
96baa820 | 13543 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13544 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13545 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13546 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13547 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13548 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13549 | remote_ops.to_has_memory = default_child_has_memory; | |
13550 | remote_ops.to_has_stack = default_child_has_stack; | |
13551 | remote_ops.to_has_registers = default_child_has_registers; | |
13552 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13553 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13554 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13555 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13556 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13557 | remote_ops.to_flash_erase = remote_flash_erase; |
13558 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13559 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13560 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13561 | remote_ops.to_can_async_p = remote_can_async_p; |
13562 | remote_ops.to_is_async_p = remote_is_async_p; | |
13563 | remote_ops.to_async = remote_async; | |
65706a29 | 13564 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13565 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13566 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13567 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13568 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13569 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13570 | remote_ops.to_supports_disable_randomization |
13571 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13572 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13573 | remote_ops.to_fileio_open = remote_hostio_open; |
13574 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13575 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13576 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13577 | remote_ops.to_fileio_close = remote_hostio_close; |
13578 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13579 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13580 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13581 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13582 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13583 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13584 | remote_ops.to_trace_init = remote_trace_init; |
13585 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13586 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13587 | remote_ops.to_download_trace_state_variable |
13588 | = remote_download_trace_state_variable; | |
d248b706 KY |
13589 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13590 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13591 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13592 | remote_ops.to_trace_start = remote_trace_start; | |
13593 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13594 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13595 | remote_ops.to_trace_stop = remote_trace_stop; |
13596 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13597 | remote_ops.to_get_trace_state_variable_value |
13598 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13599 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13600 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13601 | remote_ops.to_upload_trace_state_variables |
13602 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13603 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13604 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13605 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13606 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13607 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13608 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13609 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13610 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13611 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13612 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13613 | remote_ops.to_static_tracepoint_marker_at |
13614 | = remote_static_tracepoint_marker_at; | |
13615 | remote_ops.to_static_tracepoint_markers_by_strid | |
13616 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13617 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13618 | remote_ops.to_use_agent = remote_use_agent; |
13619 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13620 | remote_ops.to_supports_btrace = remote_supports_btrace; |
13621 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
13622 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13623 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13624 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13625 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13626 | remote_ops.to_augmented_libraries_svr4_read = |
13627 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13628 | remote_ops.to_follow_fork = remote_follow_fork; |
13629 | remote_ops.to_follow_exec = remote_follow_exec; | |
13630 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13631 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13632 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13633 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13634 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13635 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
3a00c802 | 13636 | remote_ops.to_execution_direction = remote_execution_direction; |
c906108c SS |
13637 | } |
13638 | ||
13639 | /* Set up the extended remote vector by making a copy of the standard | |
13640 | remote vector and adding to it. */ | |
13641 | ||
13642 | static void | |
fba45db2 | 13643 | init_extended_remote_ops (void) |
c906108c SS |
13644 | { |
13645 | extended_remote_ops = remote_ops; | |
13646 | ||
0f71a2f6 | 13647 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13648 | extended_remote_ops.to_longname = |
c906108c | 13649 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13650 | extended_remote_ops.to_doc = |
c906108c | 13651 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13652 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13653 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13654 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13655 | extended_remote_ops.to_detach = extended_remote_detach; |
13656 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13657 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13658 | extended_remote_ops.to_supports_disable_randomization |
13659 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13660 | } |
13661 | ||
6426a772 | 13662 | static int |
6a109b6b | 13663 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13664 | { |
5d93a237 TT |
13665 | struct remote_state *rs = get_remote_state (); |
13666 | ||
3015c064 SM |
13667 | /* We don't go async if the user has explicitly prevented it with the |
13668 | "maint set target-async" command. */ | |
c6ebd6cf | 13669 | if (!target_async_permitted) |
75c99385 PA |
13670 | return 0; |
13671 | ||
23860348 | 13672 | /* We're async whenever the serial device is. */ |
5d93a237 | 13673 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13674 | } |
13675 | ||
13676 | static int | |
6a109b6b | 13677 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13678 | { |
5d93a237 TT |
13679 | struct remote_state *rs = get_remote_state (); |
13680 | ||
c6ebd6cf | 13681 | if (!target_async_permitted) |
75c99385 PA |
13682 | /* We only enable async when the user specifically asks for it. */ |
13683 | return 0; | |
13684 | ||
23860348 | 13685 | /* We're async whenever the serial device is. */ |
5d93a237 | 13686 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13687 | } |
13688 | ||
2acceee2 JM |
13689 | /* Pass the SERIAL event on and up to the client. One day this code |
13690 | will be able to delay notifying the client of an event until the | |
23860348 | 13691 | point where an entire packet has been received. */ |
2acceee2 | 13692 | |
2acceee2 JM |
13693 | static serial_event_ftype remote_async_serial_handler; |
13694 | ||
6426a772 | 13695 | static void |
819cc324 | 13696 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13697 | { |
2acceee2 JM |
13698 | /* Don't propogate error information up to the client. Instead let |
13699 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13700 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13701 | } |
13702 | ||
74531fed PA |
13703 | static void |
13704 | remote_async_inferior_event_handler (gdb_client_data data) | |
13705 | { | |
13706 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13707 | } | |
13708 | ||
2acceee2 | 13709 | static void |
6a3753b3 | 13710 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13711 | { |
5d93a237 TT |
13712 | struct remote_state *rs = get_remote_state (); |
13713 | ||
6a3753b3 | 13714 | if (enable) |
2acceee2 | 13715 | { |
88b496c3 | 13716 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13717 | |
13718 | /* If there are pending events in the stop reply queue tell the | |
13719 | event loop to process them. */ | |
13720 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13721 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13722 | /* For simplicity, below we clear the pending events token |
13723 | without remembering whether it is marked, so here we always | |
13724 | mark it. If there's actually no pending notification to | |
13725 | process, this ends up being a no-op (other than a spurious | |
13726 | event-loop wakeup). */ | |
13727 | if (target_is_non_stop_p ()) | |
13728 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13729 | } |
13730 | else | |
b7d2e916 PA |
13731 | { |
13732 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13733 | /* If the core is disabling async, it doesn't want to be |
13734 | disturbed with target events. Clear all async event sources | |
13735 | too. */ | |
b7d2e916 | 13736 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13737 | if (target_is_non_stop_p ()) |
13738 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13739 | } |
6426a772 JM |
13740 | } |
13741 | ||
65706a29 PA |
13742 | /* Implementation of the to_thread_events method. */ |
13743 | ||
13744 | static void | |
13745 | remote_thread_events (struct target_ops *ops, int enable) | |
13746 | { | |
13747 | struct remote_state *rs = get_remote_state (); | |
13748 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13749 | |
13750 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13751 | return; | |
13752 | ||
13753 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13754 | putpkt (rs->buf); | |
13755 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13756 | ||
13757 | switch (packet_ok (rs->buf, | |
13758 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13759 | { | |
13760 | case PACKET_OK: | |
13761 | if (strcmp (rs->buf, "OK") != 0) | |
13762 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13763 | break; | |
13764 | case PACKET_ERROR: | |
13765 | warning (_("Remote failure reply: %s"), rs->buf); | |
13766 | break; | |
13767 | case PACKET_UNKNOWN: | |
13768 | break; | |
13769 | } | |
13770 | } | |
13771 | ||
5a2468f5 | 13772 | static void |
c2d11a7d | 13773 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 13774 | { |
635c7e8a | 13775 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13776 | } |
13777 | ||
d471ea57 AC |
13778 | static void |
13779 | show_remote_cmd (char *args, int from_tty) | |
13780 | { | |
37a105a1 | 13781 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13782 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13783 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13784 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13785 | |
2e783024 | 13786 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13787 | for (; list != NULL; list = list->next) |
13788 | if (strcmp (list->name, "Z-packet") == 0) | |
13789 | continue; | |
427c3a89 DJ |
13790 | else if (list->type == not_set_cmd) |
13791 | /* Alias commands are exactly like the original, except they | |
13792 | don't have the normal type. */ | |
13793 | continue; | |
13794 | else | |
37a105a1 | 13795 | { |
2e783024 | 13796 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13797 | |
112e8700 SM |
13798 | uiout->field_string ("name", list->name); |
13799 | uiout->text (": "); | |
427c3a89 | 13800 | if (list->type == show_cmd) |
f5c4fcd9 | 13801 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13802 | else |
13803 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13804 | } |
d471ea57 | 13805 | } |
5a2468f5 | 13806 | |
0f71a2f6 | 13807 | |
23860348 | 13808 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13809 | static void |
13810 | remote_new_objfile (struct objfile *objfile) | |
13811 | { | |
5d93a237 TT |
13812 | struct remote_state *rs = get_remote_state (); |
13813 | ||
13814 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13815 | remote_check_symbols (); |
dc8acb97 MS |
13816 | } |
13817 | ||
00bf0b85 SS |
13818 | /* Pull all the tracepoints defined on the target and create local |
13819 | data structures representing them. We don't want to create real | |
13820 | tracepoints yet, we don't want to mess up the user's existing | |
13821 | collection. */ | |
13822 | ||
13823 | static int | |
ab6617cc | 13824 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13825 | { |
00bf0b85 SS |
13826 | struct remote_state *rs = get_remote_state (); |
13827 | char *p; | |
d5551862 | 13828 | |
00bf0b85 SS |
13829 | /* Ask for a first packet of tracepoint definition. */ |
13830 | putpkt ("qTfP"); | |
13831 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13832 | p = rs->buf; | |
13833 | while (*p && *p != 'l') | |
d5551862 | 13834 | { |
00bf0b85 SS |
13835 | parse_tracepoint_definition (p, utpp); |
13836 | /* Ask for another packet of tracepoint definition. */ | |
13837 | putpkt ("qTsP"); | |
13838 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13839 | p = rs->buf; | |
d5551862 | 13840 | } |
00bf0b85 | 13841 | return 0; |
d5551862 SS |
13842 | } |
13843 | ||
00bf0b85 | 13844 | static int |
181e3713 TT |
13845 | remote_upload_trace_state_variables (struct target_ops *self, |
13846 | struct uploaded_tsv **utsvp) | |
d5551862 | 13847 | { |
00bf0b85 | 13848 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13849 | char *p; |
d5551862 | 13850 | |
00bf0b85 SS |
13851 | /* Ask for a first packet of variable definition. */ |
13852 | putpkt ("qTfV"); | |
d5551862 SS |
13853 | getpkt (&rs->buf, &rs->buf_size, 0); |
13854 | p = rs->buf; | |
00bf0b85 | 13855 | while (*p && *p != 'l') |
d5551862 | 13856 | { |
00bf0b85 SS |
13857 | parse_tsv_definition (p, utsvp); |
13858 | /* Ask for another packet of variable definition. */ | |
13859 | putpkt ("qTsV"); | |
d5551862 SS |
13860 | getpkt (&rs->buf, &rs->buf_size, 0); |
13861 | p = rs->buf; | |
13862 | } | |
00bf0b85 | 13863 | return 0; |
d5551862 SS |
13864 | } |
13865 | ||
c1e36e3e PA |
13866 | /* The "set/show range-stepping" show hook. */ |
13867 | ||
13868 | static void | |
13869 | show_range_stepping (struct ui_file *file, int from_tty, | |
13870 | struct cmd_list_element *c, | |
13871 | const char *value) | |
13872 | { | |
13873 | fprintf_filtered (file, | |
13874 | _("Debugger's willingness to use range stepping " | |
13875 | "is %s.\n"), value); | |
13876 | } | |
13877 | ||
13878 | /* The "set/show range-stepping" set hook. */ | |
13879 | ||
13880 | static void | |
13881 | set_range_stepping (char *ignore_args, int from_tty, | |
13882 | struct cmd_list_element *c) | |
13883 | { | |
5d93a237 TT |
13884 | struct remote_state *rs = get_remote_state (); |
13885 | ||
c1e36e3e PA |
13886 | /* Whene enabling, check whether range stepping is actually |
13887 | supported by the target, and warn if not. */ | |
13888 | if (use_range_stepping) | |
13889 | { | |
5d93a237 | 13890 | if (rs->remote_desc != NULL) |
c1e36e3e | 13891 | { |
4082afcc | 13892 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13893 | remote_vcont_probe (rs); |
13894 | ||
4082afcc | 13895 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13896 | && rs->supports_vCont.r) |
13897 | return; | |
13898 | } | |
13899 | ||
13900 | warning (_("Range stepping is not supported by the current target")); | |
13901 | } | |
13902 | } | |
13903 | ||
c906108c | 13904 | void |
fba45db2 | 13905 | _initialize_remote (void) |
c906108c | 13906 | { |
9a7071a8 | 13907 | struct cmd_list_element *cmd; |
6f937416 | 13908 | const char *cmd_name; |
ea9c271d | 13909 | |
0f71a2f6 | 13910 | /* architecture specific data */ |
2bc416ba | 13911 | remote_gdbarch_data_handle = |
23860348 | 13912 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13913 | remote_g_packet_data_handle = |
13914 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13915 | |
94585166 DB |
13916 | remote_pspace_data |
13917 | = register_program_space_data_with_cleanup (NULL, | |
13918 | remote_pspace_data_cleanup); | |
13919 | ||
ea9c271d DJ |
13920 | /* Initialize the per-target state. At the moment there is only one |
13921 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13922 | time. */ |
13923 | remote_state = new_remote_state (); | |
ea9c271d | 13924 | |
c906108c SS |
13925 | init_remote_ops (); |
13926 | add_target (&remote_ops); | |
13927 | ||
13928 | init_extended_remote_ops (); | |
13929 | add_target (&extended_remote_ops); | |
cce74817 | 13930 | |
dc8acb97 | 13931 | /* Hook into new objfile notification. */ |
06d3b283 | 13932 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13933 | /* We're no longer interested in notification events of an inferior |
13934 | when it exits. */ | |
13935 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13936 | |
c906108c SS |
13937 | #if 0 |
13938 | init_remote_threadtests (); | |
13939 | #endif | |
13940 | ||
722247f1 | 13941 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13942 | /* set/show remote ... */ |
d471ea57 | 13943 | |
1bedd215 | 13944 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13945 | Remote protocol specific variables\n\ |
13946 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13947 | the packets being used"), |
cff3e48b | 13948 | &remote_set_cmdlist, "set remote ", |
23860348 | 13949 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13950 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13951 | Remote protocol specific variables\n\ |
13952 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13953 | the packets being used"), |
cff3e48b | 13954 | &remote_show_cmdlist, "show remote ", |
23860348 | 13955 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13956 | |
1a966eab AC |
13957 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13958 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13959 | Argument is a single section name (default: all loaded sections).\n\ |
13960 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13961 | &cmdlist); |
13962 | ||
1a966eab AC |
13963 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13964 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13965 | maintenance packet TEXT\n\ |
13966 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13967 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13968 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13969 | terminating `#' character and checksum."), |
c906108c SS |
13970 | &maintenancelist); |
13971 | ||
7915a72c AC |
13972 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13973 | Set whether to send break if interrupted."), _("\ | |
13974 | Show whether to send break if interrupted."), _("\ | |
13975 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13976 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13977 | &setlist, &showlist); |
9a7071a8 JB |
13978 | cmd_name = "remotebreak"; |
13979 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13980 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13981 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13982 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13983 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13984 | ||
13985 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13986 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13987 | _("\ | |
9a7071a8 JB |
13988 | Set interrupt sequence to remote target."), _("\ |
13989 | Show interrupt sequence to remote target."), _("\ | |
13990 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13991 | NULL, show_interrupt_sequence, | |
13992 | &remote_set_cmdlist, | |
13993 | &remote_show_cmdlist); | |
13994 | ||
13995 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13996 | &interrupt_on_connect, _("\ | |
13997 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13998 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13999 | If set, interrupt sequence is sent to remote target."), | |
14000 | NULL, NULL, | |
14001 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14002 | |
23860348 | 14003 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14004 | |
1a966eab AC |
14005 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14006 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14007 | &setlist); |
1a966eab AC |
14008 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14009 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14010 | &showlist); |
14011 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14012 | set_memory_write_packet_size, _("\ |
14013 | Set the maximum number of bytes per memory-write packet.\n\ | |
14014 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14015 | default packet size. The actual limit is further reduced\n\ | |
14016 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14017 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14018 | &remote_set_cmdlist); |
14019 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14020 | set_memory_read_packet_size, _("\ |
14021 | Set the maximum number of bytes per memory-read packet.\n\ | |
14022 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14023 | default packet size. The actual limit is further reduced\n\ | |
14024 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14025 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14026 | &remote_set_cmdlist); |
14027 | add_cmd ("memory-write-packet-size", no_class, | |
14028 | show_memory_write_packet_size, | |
1a966eab | 14029 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14030 | &remote_show_cmdlist); |
14031 | add_cmd ("memory-read-packet-size", no_class, | |
14032 | show_memory_read_packet_size, | |
1a966eab | 14033 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14034 | &remote_show_cmdlist); |
c906108c | 14035 | |
b3f42336 | 14036 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14037 | &remote_hw_watchpoint_limit, _("\ |
14038 | Set the maximum number of target hardware watchpoints."), _("\ | |
14039 | Show the maximum number of target hardware watchpoints."), _("\ | |
14040 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14041 | NULL, NULL, /* FIXME: i18n: The maximum |
14042 | number of target hardware | |
14043 | watchpoints is %s. */ | |
b3f42336 | 14044 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14045 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14046 | &remote_hw_watchpoint_length_limit, _("\ | |
14047 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14048 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14049 | Specify a negative limit for unlimited."), | |
14050 | NULL, NULL, /* FIXME: i18n: The maximum | |
14051 | length (in bytes) of a target | |
14052 | hardware watchpoint is %s. */ | |
14053 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14054 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14055 | &remote_hw_breakpoint_limit, _("\ |
14056 | Set the maximum number of target hardware breakpoints."), _("\ | |
14057 | Show the maximum number of target hardware breakpoints."), _("\ | |
14058 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14059 | NULL, NULL, /* FIXME: i18n: The maximum |
14060 | number of target hardware | |
14061 | breakpoints is %s. */ | |
b3f42336 | 14062 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14063 | |
1b493192 PA |
14064 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14065 | &remote_address_size, _("\ | |
4d28ad1e AC |
14066 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14067 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14068 | NULL, |
14069 | NULL, /* FIXME: i18n: */ | |
14070 | &setlist, &showlist); | |
c906108c | 14071 | |
ca4f7f8b PA |
14072 | init_all_packet_configs (); |
14073 | ||
444abaca | 14074 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14075 | "X", "binary-download", 1); |
0f71a2f6 | 14076 | |
444abaca | 14077 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14078 | "vCont", "verbose-resume", 0); |
506fb367 | 14079 | |
89be2091 DJ |
14080 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14081 | "QPassSignals", "pass-signals", 0); | |
14082 | ||
82075af2 JS |
14083 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14084 | "QCatchSyscalls", "catch-syscalls", 0); | |
14085 | ||
9b224c5e PA |
14086 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14087 | "QProgramSignals", "program-signals", 0); | |
14088 | ||
aefd8b33 SDJ |
14089 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14090 | "QStartupWithShell", "startup-with-shell", 0); | |
14091 | ||
444abaca | 14092 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14093 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14094 | |
444abaca | 14095 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14096 | "P", "set-register", 1); |
d471ea57 | 14097 | |
444abaca | 14098 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14099 | "p", "fetch-register", 1); |
b96ec7ac | 14100 | |
444abaca | 14101 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14102 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14103 | |
444abaca | 14104 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14105 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14106 | |
444abaca | 14107 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14108 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14109 | |
444abaca | 14110 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14111 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14112 | |
444abaca | 14113 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14114 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14115 | |
0876f84a DJ |
14116 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14117 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14118 | |
c78fa86a GB |
14119 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14120 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14121 | ||
23181151 DJ |
14122 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14123 | "qXfer:features:read", "target-features", 0); | |
14124 | ||
cfa9d6d9 DJ |
14125 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14126 | "qXfer:libraries:read", "library-info", 0); | |
14127 | ||
2268b414 JK |
14128 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14129 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14130 | ||
fd79ecee DJ |
14131 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14132 | "qXfer:memory-map:read", "memory-map", 0); | |
14133 | ||
0e7f50da UW |
14134 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14135 | "qXfer:spu:read", "read-spu-object", 0); | |
14136 | ||
14137 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14138 | "qXfer:spu:write", "write-spu-object", 0); | |
14139 | ||
07e059b5 VP |
14140 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14141 | "qXfer:osdata:read", "osdata", 0); | |
14142 | ||
dc146f7c VP |
14143 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14144 | "qXfer:threads:read", "threads", 0); | |
14145 | ||
4aa995e1 PA |
14146 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14147 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14148 | ||
14149 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14150 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14151 | ||
b3b9301e PA |
14152 | add_packet_config_cmd |
14153 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14154 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14155 | |
169081d0 TG |
14156 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14157 | "qXfer:uib:read", "unwind-info-block", 0); | |
14158 | ||
444abaca | 14159 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14160 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14161 | 0); |
14162 | ||
711e434b PM |
14163 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14164 | "qGetTIBAddr", "get-thread-information-block-address", | |
14165 | 0); | |
14166 | ||
40ab02ce MS |
14167 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14168 | "bc", "reverse-continue", 0); | |
14169 | ||
14170 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14171 | "bs", "reverse-step", 0); | |
14172 | ||
be2a5f71 DJ |
14173 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14174 | "qSupported", "supported-packets", 0); | |
14175 | ||
08388c79 DE |
14176 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14177 | "qSearch:memory", "search-memory", 0); | |
14178 | ||
bd3eecc3 PA |
14179 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14180 | "qTStatus", "trace-status", 0); | |
14181 | ||
15a201c8 GB |
14182 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14183 | "vFile:setfs", "hostio-setfs", 0); | |
14184 | ||
a6b151f1 DJ |
14185 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14186 | "vFile:open", "hostio-open", 0); | |
14187 | ||
14188 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14189 | "vFile:pread", "hostio-pread", 0); | |
14190 | ||
14191 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14192 | "vFile:pwrite", "hostio-pwrite", 0); | |
14193 | ||
14194 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14195 | "vFile:close", "hostio-close", 0); | |
14196 | ||
14197 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14198 | "vFile:unlink", "hostio-unlink", 0); | |
14199 | ||
b9e7b9c3 UW |
14200 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14201 | "vFile:readlink", "hostio-readlink", 0); | |
14202 | ||
0a93529c GB |
14203 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14204 | "vFile:fstat", "hostio-fstat", 0); | |
14205 | ||
2d717e4f DJ |
14206 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14207 | "vAttach", "attach", 0); | |
14208 | ||
14209 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14210 | "vRun", "run", 0); | |
14211 | ||
a6f3e723 SL |
14212 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14213 | "QStartNoAckMode", "noack", 0); | |
14214 | ||
82f73884 PA |
14215 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14216 | "vKill", "kill", 0); | |
14217 | ||
0b16c5cf PA |
14218 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14219 | "qAttached", "query-attached", 0); | |
14220 | ||
782b2b07 | 14221 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14222 | "ConditionalTracepoints", |
14223 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14224 | |
14225 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14226 | "ConditionalBreakpoints", | |
14227 | "conditional-breakpoints", 0); | |
14228 | ||
d3ce09f5 SS |
14229 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14230 | "BreakpointCommands", | |
14231 | "breakpoint-commands", 0); | |
14232 | ||
7a697b8d SS |
14233 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14234 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14235 | |
409873ef SS |
14236 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14237 | "TracepointSource", "TracepointSource", 0); | |
14238 | ||
d914c394 SS |
14239 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14240 | "QAllow", "allow", 0); | |
14241 | ||
0fb4aa4b PA |
14242 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14243 | "StaticTracepoints", "static-tracepoints", 0); | |
14244 | ||
1e4d1764 YQ |
14245 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14246 | "InstallInTrace", "install-in-trace", 0); | |
14247 | ||
0fb4aa4b PA |
14248 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14249 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14250 | ||
78d85199 YQ |
14251 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14252 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14253 | ||
03583c20 UW |
14254 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14255 | "QDisableRandomization", "disable-randomization", 0); | |
14256 | ||
d1feda86 YQ |
14257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14258 | "QAgent", "agent", 0); | |
14259 | ||
f6f899bf HAQ |
14260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14261 | "QTBuffer:size", "trace-buffer-size", 0); | |
14262 | ||
9accd112 MM |
14263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14264 | "Qbtrace:off", "disable-btrace", 0); | |
14265 | ||
14266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14267 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14268 | ||
14269 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14270 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14271 | |
14272 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14273 | "qXfer:btrace", "read-btrace", 0); | |
14274 | ||
f4abbc16 MM |
14275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14276 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14277 | ||
d33501a5 MM |
14278 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14279 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14280 | ||
73b8c1fd PA |
14281 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14282 | "multiprocess-feature", "multiprocess-feature", 0); | |
14283 | ||
f7e6eed5 PA |
14284 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14285 | "swbreak-feature", "swbreak-feature", 0); | |
14286 | ||
14287 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14288 | "hwbreak-feature", "hwbreak-feature", 0); | |
14289 | ||
89245bc0 DB |
14290 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14291 | "fork-event-feature", "fork-event-feature", 0); | |
14292 | ||
14293 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14294 | "vfork-event-feature", "vfork-event-feature", 0); | |
14295 | ||
b20a6524 MM |
14296 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14297 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14298 | ||
750ce8d1 YQ |
14299 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14300 | "vContSupported", "verbose-resume-supported", 0); | |
14301 | ||
94585166 DB |
14302 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14303 | "exec-event-feature", "exec-event-feature", 0); | |
14304 | ||
de979965 PA |
14305 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14306 | "vCtrlC", "ctrl-c", 0); | |
14307 | ||
65706a29 PA |
14308 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14309 | "QThreadEvents", "thread-events", 0); | |
14310 | ||
f2faf941 PA |
14311 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14312 | "N stop reply", "no-resumed-stop-reply", 0); | |
14313 | ||
0b736949 DB |
14314 | /* Assert that we've registered "set remote foo-packet" commands |
14315 | for all packet configs. */ | |
ca4f7f8b PA |
14316 | { |
14317 | int i; | |
14318 | ||
14319 | for (i = 0; i < PACKET_MAX; i++) | |
14320 | { | |
14321 | /* Ideally all configs would have a command associated. Some | |
14322 | still don't though. */ | |
14323 | int excepted; | |
14324 | ||
14325 | switch (i) | |
14326 | { | |
14327 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14328 | case PACKET_EnableDisableTracepoints_feature: |
14329 | case PACKET_tracenz_feature: | |
14330 | case PACKET_DisconnectedTracing_feature: | |
14331 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14332 | case PACKET_qCRC: |
14333 | /* Additions to this list need to be well justified: | |
14334 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14335 | excepted = 1; |
14336 | break; | |
14337 | default: | |
14338 | excepted = 0; | |
14339 | break; | |
14340 | } | |
14341 | ||
14342 | /* This catches both forgetting to add a config command, and | |
14343 | forgetting to remove a packet from the exception list. */ | |
14344 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14345 | } | |
14346 | } | |
14347 | ||
37a105a1 DJ |
14348 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14349 | Z sub-packet has its own set and show commands, but users may | |
14350 | have sets to this variable in their .gdbinit files (or in their | |
14351 | documentation). */ | |
e9e68a56 | 14352 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14353 | &remote_Z_packet_detect, _("\ |
14354 | Set use of remote protocol `Z' packets"), _("\ | |
14355 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14356 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14357 | packets."), |
e9e68a56 | 14358 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14359 | show_remote_protocol_Z_packet_cmd, |
14360 | /* FIXME: i18n: Use of remote protocol | |
14361 | `Z' packets is %s. */ | |
e9e68a56 | 14362 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14363 | |
a6b151f1 DJ |
14364 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14365 | Manipulate files on the remote system\n\ | |
14366 | Transfer files to and from the remote target system."), | |
14367 | &remote_cmdlist, "remote ", | |
14368 | 0 /* allow-unknown */, &cmdlist); | |
14369 | ||
14370 | add_cmd ("put", class_files, remote_put_command, | |
14371 | _("Copy a local file to the remote system."), | |
14372 | &remote_cmdlist); | |
14373 | ||
14374 | add_cmd ("get", class_files, remote_get_command, | |
14375 | _("Copy a remote file to the local system."), | |
14376 | &remote_cmdlist); | |
14377 | ||
14378 | add_cmd ("delete", class_files, remote_delete_command, | |
14379 | _("Delete a remote file."), | |
14380 | &remote_cmdlist); | |
14381 | ||
2d717e4f | 14382 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14383 | &remote_exec_file_var, _("\ |
2d717e4f | 14384 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14385 | Show the remote pathname for \"run\""), NULL, |
14386 | set_remote_exec_file, | |
14387 | show_remote_exec_file, | |
14388 | &remote_set_cmdlist, | |
14389 | &remote_show_cmdlist); | |
2d717e4f | 14390 | |
c1e36e3e PA |
14391 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14392 | &use_range_stepping, _("\ | |
14393 | Enable or disable range stepping."), _("\ | |
14394 | Show whether target-assisted range stepping is enabled."), _("\ | |
14395 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14396 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14397 | of issuing multiple single-steps. This speeds up source level\n\ | |
14398 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14399 | stepping is supported by the target. The default is on."), | |
14400 | set_range_stepping, | |
14401 | show_range_stepping, | |
14402 | &setlist, | |
14403 | &showlist); | |
14404 | ||
449092f6 CV |
14405 | /* Eventually initialize fileio. See fileio.c */ |
14406 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14407 | |
ba348170 | 14408 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14409 | special ptids with it set to != 0. */ |
ba348170 PA |
14410 | magic_null_ptid = ptid_build (42000, -1, 1); |
14411 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14412 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
14413 | |
14414 | target_buf_size = 2048; | |
224c3ddb | 14415 | target_buf = (char *) xmalloc (target_buf_size); |
c906108c | 14416 | } |
10760264 | 14417 |