Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1988-2017 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
438e1e42 | 50 | #include "gdb_sys_time.h" |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
2ec845e7 | 75 | #include "common/scoped_restore.h" |
0a2dde4a | 76 | #include "environ.h" |
f6327dcb | 77 | #include "common/byte-vector.h" |
35b1e5cc | 78 | |
0df8b418 | 79 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
80 | static char *target_buf; |
81 | static long target_buf_size; | |
35b1e5cc | 82 | |
94585166 DB |
83 | /* Per-program-space data key. */ |
84 | static const struct program_space_data *remote_pspace_data; | |
85 | ||
86 | /* The variable registered as the control variable used by the | |
87 | remote exec-file commands. While the remote exec-file setting is | |
88 | per-program-space, the set/show machinery uses this as the | |
89 | location of the remote exec-file value. */ | |
90 | static char *remote_exec_file_var; | |
91 | ||
6765f3e5 DJ |
92 | /* The size to align memory write packets, when practical. The protocol |
93 | does not guarantee any alignment, and gdb will generate short | |
94 | writes and unaligned writes, but even as a best-effort attempt this | |
95 | can improve bulk transfers. For instance, if a write is misaligned | |
96 | relative to the target's data bus, the stub may need to make an extra | |
97 | round trip fetching data from the target. This doesn't make a | |
98 | huge difference, but it's easy to do, so we try to be helpful. | |
99 | ||
100 | The alignment chosen is arbitrary; usually data bus width is | |
101 | important here, not the possibly larger cache line size. */ | |
102 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
103 | ||
23860348 | 104 | /* Prototypes for local functions. */ |
6d820c5c | 105 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 106 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 107 | int forever, int *is_notif); |
6426a772 | 108 | |
a14ed312 | 109 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 110 | |
f32dbf8c MM |
111 | static void remote_prepare_to_store (struct target_ops *self, |
112 | struct regcache *regcache); | |
c906108c | 113 | |
014f9477 TT |
114 | static void remote_open_1 (const char *, int, struct target_ops *, |
115 | int extended_p); | |
c906108c | 116 | |
de90e03d | 117 | static void remote_close (struct target_ops *self); |
c906108c | 118 | |
cbb8991c DB |
119 | struct remote_state; |
120 | ||
121 | static int remote_vkill (int pid, struct remote_state *rs); | |
122 | ||
8020350c DB |
123 | static void remote_kill_k (void); |
124 | ||
136d6dae | 125 | static void remote_mourn (struct target_ops *ops); |
c906108c | 126 | |
a14ed312 | 127 | static void extended_remote_restart (void); |
c906108c | 128 | |
6d820c5c | 129 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 130 | |
a14ed312 | 131 | static int readchar (int timeout); |
c906108c | 132 | |
c33e31fd PA |
133 | static void remote_serial_write (const char *str, int len); |
134 | ||
7d85a9c0 | 135 | static void remote_kill (struct target_ops *ops); |
c906108c | 136 | |
6a109b6b | 137 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 138 | |
6a109b6b | 139 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 140 | |
6a3753b3 | 141 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 142 | |
65706a29 PA |
143 | static void remote_thread_events (struct target_ops *ops, int enable); |
144 | ||
a14ed312 | 145 | static void interrupt_query (void); |
c906108c | 146 | |
d62a8ae2 SM |
147 | static void set_general_thread (ptid_t ptid); |
148 | static void set_continue_thread (ptid_t ptid); | |
c906108c | 149 | |
a14ed312 | 150 | static void get_offsets (void); |
c906108c | 151 | |
6d820c5c DJ |
152 | static void skip_frame (void); |
153 | ||
154 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 155 | |
a14ed312 | 156 | static int hexnumlen (ULONGEST num); |
c906108c | 157 | |
a14ed312 | 158 | static void init_remote_ops (void); |
c906108c | 159 | |
a14ed312 | 160 | static void init_extended_remote_ops (void); |
c906108c | 161 | |
1eab8a48 | 162 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 163 | |
a14ed312 | 164 | static int stubhex (int ch); |
c906108c | 165 | |
a14ed312 | 166 | static int hexnumstr (char *, ULONGEST); |
c906108c | 167 | |
a14ed312 | 168 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 169 | |
a14ed312 | 170 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 171 | |
baa336ce | 172 | static void print_packet (const char *); |
c906108c | 173 | |
a14ed312 | 174 | static void compare_sections_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static void packet_command (char *, int); |
c906108c | 177 | |
a14ed312 | 178 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 179 | |
39f77062 | 180 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 181 | |
baa336ce | 182 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 183 | |
a14ed312 | 184 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 185 | |
5a2468f5 | 186 | struct packet_config; |
5a2468f5 | 187 | |
a14ed312 | 188 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 189 | |
bb572ddd DJ |
190 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
191 | int from_tty, | |
192 | struct cmd_list_element *c, | |
193 | const char *value); | |
194 | ||
82f73884 PA |
195 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
196 | static ptid_t read_ptid (char *buf, char **obuf); | |
197 | ||
c378d69d | 198 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 199 | |
8bd200f1 TT |
200 | static int remote_get_trace_status (struct target_ops *self, |
201 | struct trace_status *ts); | |
d5551862 | 202 | |
ab6617cc TT |
203 | static int remote_upload_tracepoints (struct target_ops *self, |
204 | struct uploaded_tp **utpp); | |
00bf0b85 | 205 | |
181e3713 TT |
206 | static int remote_upload_trace_state_variables (struct target_ops *self, |
207 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 208 | |
c8d104ad PA |
209 | static void remote_query_supported (void); |
210 | ||
36d25514 | 211 | static void remote_check_symbols (void); |
c8d104ad | 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 | 454 | |
f6327dcb KB |
455 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
456 | sequence of bytes. */ | |
457 | gdb::byte_vector *thread_handle; | |
458 | ||
799a2abe PA |
459 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
460 | enum target_stop_reason stop_reason; | |
461 | ||
462 | /* This is set to the data address of the access causing the target | |
463 | to stop for a watchpoint. */ | |
464 | CORE_ADDR watch_data_address; | |
85ad3aaf PA |
465 | |
466 | /* Fields used by the vCont action coalescing implemented in | |
467 | remote_resume / remote_commit_resume. remote_resume stores each | |
468 | thread's last resume request in these fields, so that a later | |
469 | remote_commit_resume knows which is the proper action for this | |
470 | thread to include in the vCont packet. */ | |
471 | ||
472 | /* True if the last target_resume call for this thread was a step | |
473 | request, false if a continue request. */ | |
474 | int last_resume_step; | |
475 | ||
476 | /* The signal specified in the last target_resume call for this | |
477 | thread. */ | |
478 | enum gdb_signal last_resume_sig; | |
479 | ||
480 | /* Whether this thread was already vCont-resumed on the remote | |
481 | side. */ | |
482 | int vcont_resumed; | |
dc146f7c VP |
483 | }; |
484 | ||
485 | static void | |
486 | free_private_thread_info (struct private_thread_info *info) | |
487 | { | |
488 | xfree (info->extra); | |
79efa585 | 489 | xfree (info->name); |
f6327dcb | 490 | delete info->thread_handle; |
dc146f7c VP |
491 | xfree (info); |
492 | } | |
493 | ||
ea9c271d DJ |
494 | /* This data could be associated with a target, but we do not always |
495 | have access to the current target when we need it, so for now it is | |
496 | static. This will be fine for as long as only one target is in use | |
497 | at a time. */ | |
cf792862 | 498 | static struct remote_state *remote_state; |
ea9c271d DJ |
499 | |
500 | static struct remote_state * | |
0b83947e | 501 | get_remote_state_raw (void) |
ea9c271d | 502 | { |
cf792862 TT |
503 | return remote_state; |
504 | } | |
505 | ||
506 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
507 | return it. */ | |
508 | ||
509 | static struct remote_state * | |
510 | new_remote_state (void) | |
511 | { | |
512 | struct remote_state *result = XCNEW (struct remote_state); | |
513 | ||
514 | /* The default buffer size is unimportant; it will be expanded | |
515 | whenever a larger buffer is needed. */ | |
516 | result->buf_size = 400; | |
224c3ddb | 517 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 518 | result->remote_traceframe_number = -1; |
b73be471 | 519 | result->last_sent_signal = GDB_SIGNAL_0; |
3a00c802 | 520 | result->last_resume_exec_dir = EXEC_FORWARD; |
15a201c8 | 521 | result->fs_pid = -1; |
cf792862 TT |
522 | |
523 | return result; | |
ea9c271d DJ |
524 | } |
525 | ||
526 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 527 | |
ad10f812 AC |
528 | struct packet_reg |
529 | { | |
530 | long offset; /* Offset into G packet. */ | |
531 | long regnum; /* GDB's internal register number. */ | |
532 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 533 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 534 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 535 | at present. */ |
f5656ead | 536 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 537 | at present. */ |
ad10f812 AC |
538 | }; |
539 | ||
ea9c271d | 540 | struct remote_arch_state |
d01949b6 | 541 | { |
ad10f812 AC |
542 | /* Description of the remote protocol registers. */ |
543 | long sizeof_g_packet; | |
b323314b AC |
544 | |
545 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 546 | (making an array gdbarch_num_regs in size). */ |
b323314b | 547 | struct packet_reg *regs; |
ad10f812 | 548 | |
d01949b6 AC |
549 | /* This is the size (in chars) of the first response to the ``g'' |
550 | packet. It is used as a heuristic when determining the maximum | |
551 | size of memory-read and memory-write packets. A target will | |
552 | typically only reserve a buffer large enough to hold the ``g'' | |
553 | packet. The size does not include packet overhead (headers and | |
23860348 | 554 | trailers). */ |
d01949b6 AC |
555 | long actual_register_packet_size; |
556 | ||
557 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 558 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
559 | long remote_packet_size; |
560 | }; | |
561 | ||
35b1e5cc SS |
562 | /* Utility: generate error from an incoming stub packet. */ |
563 | static void | |
564 | trace_error (char *buf) | |
565 | { | |
566 | if (*buf++ != 'E') | |
567 | return; /* not an error msg */ | |
568 | switch (*buf) | |
569 | { | |
570 | case '1': /* malformed packet error */ | |
571 | if (*++buf == '0') /* general case: */ | |
572 | error (_("remote.c: error in outgoing packet.")); | |
573 | else | |
574 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
575 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
576 | default: |
577 | error (_("Target returns error code '%s'."), buf); | |
578 | } | |
579 | } | |
580 | ||
581 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
582 | static char * | |
583 | remote_get_noisy_reply (char **buf_p, | |
584 | long *sizeof_buf) | |
585 | { | |
586 | do /* Loop on reply from remote stub. */ | |
587 | { | |
588 | char *buf; | |
a744cf53 | 589 | |
0df8b418 | 590 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
591 | getpkt (buf_p, sizeof_buf, 0); |
592 | buf = *buf_p; | |
ad91cd99 | 593 | if (buf[0] == 'E') |
35b1e5cc | 594 | trace_error (buf); |
61012eef | 595 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
596 | { |
597 | ULONGEST ul; | |
598 | CORE_ADDR from, to, org_to; | |
599 | char *p, *pp; | |
600 | int adjusted_size = 0; | |
7556d4a4 | 601 | int relocated = 0; |
dde08ee1 PA |
602 | |
603 | p = buf + strlen ("qRelocInsn:"); | |
604 | pp = unpack_varlen_hex (p, &ul); | |
605 | if (*pp != ';') | |
cb91c06a | 606 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
607 | from = ul; |
608 | ||
609 | p = pp + 1; | |
a9cbf802 | 610 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
611 | to = ul; |
612 | ||
613 | org_to = to; | |
614 | ||
492d29ea | 615 | TRY |
dde08ee1 | 616 | { |
f5656ead | 617 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 618 | relocated = 1; |
dde08ee1 | 619 | } |
492d29ea | 620 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
621 | { |
622 | if (ex.error == MEMORY_ERROR) | |
623 | { | |
624 | /* Propagate memory errors silently back to the | |
625 | target. The stub may have limited the range of | |
626 | addresses we can write to, for example. */ | |
627 | } | |
628 | else | |
629 | { | |
630 | /* Something unexpectedly bad happened. Be verbose | |
631 | so we can tell what, and propagate the error back | |
632 | to the stub, so it doesn't get stuck waiting for | |
633 | a response. */ | |
634 | exception_fprintf (gdb_stderr, ex, | |
635 | _("warning: relocating instruction: ")); | |
636 | } | |
637 | putpkt ("E01"); | |
638 | } | |
492d29ea | 639 | END_CATCH |
7556d4a4 PA |
640 | |
641 | if (relocated) | |
dde08ee1 PA |
642 | { |
643 | adjusted_size = to - org_to; | |
644 | ||
bba74b36 | 645 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
646 | putpkt (buf); |
647 | } | |
dde08ee1 | 648 | } |
ad91cd99 | 649 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
650 | remote_console_output (buf + 1); /* 'O' message from stub */ |
651 | else | |
0df8b418 | 652 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
653 | } |
654 | while (1); | |
655 | } | |
3c3bea1c | 656 | |
d01949b6 AC |
657 | /* Handle for retreving the remote protocol data from gdbarch. */ |
658 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
659 | ||
ea9c271d DJ |
660 | static struct remote_arch_state * |
661 | get_remote_arch_state (void) | |
d01949b6 | 662 | { |
17d8546e | 663 | gdb_assert (target_gdbarch () != NULL); |
19ba03f4 SM |
664 | return ((struct remote_arch_state *) |
665 | gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle)); | |
d01949b6 AC |
666 | } |
667 | ||
0b83947e DJ |
668 | /* Fetch the global remote target state. */ |
669 | ||
670 | static struct remote_state * | |
671 | get_remote_state (void) | |
672 | { | |
673 | /* Make sure that the remote architecture state has been | |
674 | initialized, because doing so might reallocate rs->buf. Any | |
675 | function which calls getpkt also needs to be mindful of changes | |
676 | to rs->buf, but this call limits the number of places which run | |
677 | into trouble. */ | |
678 | get_remote_arch_state (); | |
679 | ||
680 | return get_remote_state_raw (); | |
681 | } | |
682 | ||
94585166 DB |
683 | /* Cleanup routine for the remote module's pspace data. */ |
684 | ||
685 | static void | |
686 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
687 | { | |
19ba03f4 | 688 | char *remote_exec_file = (char *) arg; |
94585166 DB |
689 | |
690 | xfree (remote_exec_file); | |
691 | } | |
692 | ||
693 | /* Fetch the remote exec-file from the current program space. */ | |
694 | ||
695 | static const char * | |
696 | get_remote_exec_file (void) | |
697 | { | |
698 | char *remote_exec_file; | |
699 | ||
19ba03f4 SM |
700 | remote_exec_file |
701 | = (char *) program_space_data (current_program_space, | |
702 | remote_pspace_data); | |
94585166 DB |
703 | if (remote_exec_file == NULL) |
704 | return ""; | |
705 | ||
706 | return remote_exec_file; | |
707 | } | |
708 | ||
709 | /* Set the remote exec file for PSPACE. */ | |
710 | ||
711 | static void | |
712 | set_pspace_remote_exec_file (struct program_space *pspace, | |
713 | char *remote_exec_file) | |
714 | { | |
19ba03f4 | 715 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
716 | |
717 | xfree (old_file); | |
718 | set_program_space_data (pspace, remote_pspace_data, | |
719 | xstrdup (remote_exec_file)); | |
720 | } | |
721 | ||
722 | /* The "set/show remote exec-file" set command hook. */ | |
723 | ||
724 | static void | |
725 | set_remote_exec_file (char *ignored, int from_tty, | |
726 | struct cmd_list_element *c) | |
727 | { | |
728 | gdb_assert (remote_exec_file_var != NULL); | |
729 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
730 | } | |
731 | ||
732 | /* The "set/show remote exec-file" show command hook. */ | |
733 | ||
734 | static void | |
735 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
736 | struct cmd_list_element *cmd, const char *value) | |
737 | { | |
738 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
739 | } | |
740 | ||
74ca34ce DJ |
741 | static int |
742 | compare_pnums (const void *lhs_, const void *rhs_) | |
743 | { | |
19ba03f4 SM |
744 | const struct packet_reg * const *lhs |
745 | = (const struct packet_reg * const *) lhs_; | |
746 | const struct packet_reg * const *rhs | |
747 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
748 | |
749 | if ((*lhs)->pnum < (*rhs)->pnum) | |
750 | return -1; | |
751 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
752 | return 0; | |
753 | else | |
754 | return 1; | |
755 | } | |
756 | ||
c21236dc PA |
757 | static int |
758 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 759 | { |
74ca34ce | 760 | int regnum, num_remote_regs, offset; |
74ca34ce | 761 | struct packet_reg **remote_regs; |
ea9c271d | 762 | |
4a22f64d | 763 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 764 | { |
c21236dc | 765 | struct packet_reg *r = ®s[regnum]; |
baef701f | 766 | |
4a22f64d | 767 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
768 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
769 | r->pnum = -1; | |
770 | else | |
771 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
772 | ||
b323314b | 773 | r->regnum = regnum; |
74ca34ce DJ |
774 | } |
775 | ||
776 | /* Define the g/G packet format as the contents of each register | |
777 | with a remote protocol number, in order of ascending protocol | |
778 | number. */ | |
779 | ||
224c3ddb | 780 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 781 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 782 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 783 | regnum++) |
c21236dc PA |
784 | if (regs[regnum].pnum != -1) |
785 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 786 | |
74ca34ce DJ |
787 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
788 | compare_pnums); | |
789 | ||
790 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
791 | { | |
792 | remote_regs[regnum]->in_g_packet = 1; | |
793 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 794 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
795 | } |
796 | ||
c21236dc PA |
797 | return offset; |
798 | } | |
799 | ||
800 | /* Given the architecture described by GDBARCH, return the remote | |
801 | protocol register's number and the register's offset in the g/G | |
802 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
803 | If the target does not have a mapping for REGNUM, return false, | |
804 | otherwise, return true. */ | |
805 | ||
806 | int | |
807 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
808 | int *pnum, int *poffset) | |
809 | { | |
c21236dc PA |
810 | struct packet_reg *regs; |
811 | struct cleanup *old_chain; | |
812 | ||
813 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
814 | ||
224c3ddb | 815 | regs = XCNEWVEC (struct packet_reg, gdbarch_num_regs (gdbarch)); |
c21236dc PA |
816 | old_chain = make_cleanup (xfree, regs); |
817 | ||
54887903 | 818 | map_regcache_remote_table (gdbarch, regs); |
c21236dc PA |
819 | |
820 | *pnum = regs[regnum].pnum; | |
821 | *poffset = regs[regnum].offset; | |
822 | ||
823 | do_cleanups (old_chain); | |
824 | ||
825 | return *pnum != -1; | |
826 | } | |
827 | ||
828 | static void * | |
829 | init_remote_state (struct gdbarch *gdbarch) | |
830 | { | |
831 | struct remote_state *rs = get_remote_state_raw (); | |
832 | struct remote_arch_state *rsa; | |
833 | ||
834 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
835 | ||
836 | /* Use the architecture to build a regnum<->pnum table, which will be | |
837 | 1:1 unless a feature set specifies otherwise. */ | |
838 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
839 | gdbarch_num_regs (gdbarch), | |
840 | struct packet_reg); | |
841 | ||
74ca34ce DJ |
842 | /* Record the maximum possible size of the g packet - it may turn out |
843 | to be smaller. */ | |
c21236dc | 844 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 845 | |
0df8b418 | 846 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
847 | remote stubs have a hardwired buffer size of 400 bytes |
848 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
849 | as the maximum packet-size to ensure that the packet and an extra | |
850 | NUL character can always fit in the buffer. This stops GDB | |
851 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
852 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
853 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 854 | |
ea9c271d DJ |
855 | /* This one is filled in when a ``g'' packet is received. */ |
856 | rsa->actual_register_packet_size = 0; | |
857 | ||
858 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
859 | default, adjust the size accordingly. Remember that each byte is |
860 | encoded as two characters. 32 is the overhead for the packet | |
861 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 862 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 863 | little. */ |
ea9c271d DJ |
864 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
865 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 866 | |
ea9c271d DJ |
867 | /* Make sure that the packet buffer is plenty big enough for |
868 | this architecture. */ | |
869 | if (rs->buf_size < rsa->remote_packet_size) | |
870 | { | |
871 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 872 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 873 | } |
6d820c5c | 874 | |
ea9c271d DJ |
875 | return rsa; |
876 | } | |
877 | ||
878 | /* Return the current allowed size of a remote packet. This is | |
879 | inferred from the current architecture, and should be used to | |
880 | limit the length of outgoing packets. */ | |
881 | static long | |
882 | get_remote_packet_size (void) | |
883 | { | |
be2a5f71 | 884 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
885 | struct remote_arch_state *rsa = get_remote_arch_state (); |
886 | ||
be2a5f71 DJ |
887 | if (rs->explicit_packet_size) |
888 | return rs->explicit_packet_size; | |
889 | ||
ea9c271d | 890 | return rsa->remote_packet_size; |
d01949b6 AC |
891 | } |
892 | ||
ad10f812 | 893 | static struct packet_reg * |
ea9c271d | 894 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 895 | { |
f5656ead | 896 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
897 | return NULL; |
898 | else | |
ad10f812 | 899 | { |
ea9c271d | 900 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 901 | |
b323314b AC |
902 | gdb_assert (r->regnum == regnum); |
903 | return r; | |
ad10f812 | 904 | } |
ad10f812 AC |
905 | } |
906 | ||
907 | static struct packet_reg * | |
ea9c271d | 908 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 909 | { |
b323314b | 910 | int i; |
a744cf53 | 911 | |
f5656ead | 912 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 913 | { |
ea9c271d | 914 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 915 | |
b323314b AC |
916 | if (r->pnum == pnum) |
917 | return r; | |
ad10f812 AC |
918 | } |
919 | return NULL; | |
d01949b6 AC |
920 | } |
921 | ||
c906108c SS |
922 | static struct target_ops remote_ops; |
923 | ||
924 | static struct target_ops extended_remote_ops; | |
925 | ||
6426a772 JM |
926 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
927 | ``forever'' still use the normal timeout mechanism. This is | |
928 | currently used by the ASYNC code to guarentee that target reads | |
929 | during the initial connect always time-out. Once getpkt has been | |
930 | modified to return a timeout indication and, in turn | |
931 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 932 | this can go away. */ |
6426a772 JM |
933 | static int wait_forever_enabled_p = 1; |
934 | ||
9a7071a8 JB |
935 | /* Allow the user to specify what sequence to send to the remote |
936 | when he requests a program interruption: Although ^C is usually | |
937 | what remote systems expect (this is the default, here), it is | |
938 | sometimes preferable to send a break. On other systems such | |
939 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
940 | is required in order to interrupt the execution. */ | |
941 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
942 | const char interrupt_sequence_break[] = "BREAK"; | |
943 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 944 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
945 | { |
946 | interrupt_sequence_control_c, | |
947 | interrupt_sequence_break, | |
948 | interrupt_sequence_break_g, | |
949 | NULL | |
950 | }; | |
951 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
952 | ||
953 | static void | |
954 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
955 | struct cmd_list_element *c, | |
956 | const char *value) | |
957 | { | |
958 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
959 | fprintf_filtered (file, | |
960 | _("Send the ASCII ETX character (Ctrl-c) " | |
961 | "to the remote target to interrupt the " | |
962 | "execution of the program.\n")); | |
963 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
964 | fprintf_filtered (file, | |
965 | _("send a break signal to the remote target " | |
966 | "to interrupt the execution of the program.\n")); | |
967 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
968 | fprintf_filtered (file, | |
969 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
970 | "the remote target to interrupt the execution " | |
971 | "of Linux kernel.\n")); | |
972 | else | |
973 | internal_error (__FILE__, __LINE__, | |
974 | _("Invalid value for interrupt_sequence_mode: %s."), | |
975 | interrupt_sequence_mode); | |
976 | } | |
6426a772 | 977 | |
9a7071a8 JB |
978 | /* This boolean variable specifies whether interrupt_sequence is sent |
979 | to the remote target when gdb connects to it. | |
980 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
981 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
982 | static int interrupt_on_connect = 0; | |
c906108c | 983 | |
9a7071a8 JB |
984 | /* This variable is used to implement the "set/show remotebreak" commands. |
985 | Since these commands are now deprecated in favor of "set/show remote | |
986 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
987 | static int remote_break; |
988 | ||
9a7071a8 JB |
989 | static void |
990 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
991 | { | |
992 | if (remote_break) | |
993 | interrupt_sequence_mode = interrupt_sequence_break; | |
994 | else | |
995 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
996 | } | |
997 | ||
998 | static void | |
999 | show_remotebreak (struct ui_file *file, int from_tty, | |
1000 | struct cmd_list_element *c, | |
1001 | const char *value) | |
1002 | { | |
1003 | } | |
1004 | ||
c906108c SS |
1005 | /* This variable sets the number of bits in an address that are to be |
1006 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1007 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1008 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1009 | initial implementation of remote.c restricted the address sent in | |
1010 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1011 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1012 | address was never sent. Since fixing this bug may cause a break in | |
1013 | some remote targets this variable is principly provided to | |
23860348 | 1014 | facilitate backward compatibility. */ |
c906108c | 1015 | |
883b9c6c | 1016 | static unsigned int remote_address_size; |
c906108c | 1017 | |
75c99385 PA |
1018 | /* Temporary to track who currently owns the terminal. See |
1019 | remote_terminal_* for more details. */ | |
6426a772 JM |
1020 | |
1021 | static int remote_async_terminal_ours_p; | |
1022 | ||
11cf8741 | 1023 | \f |
11cf8741 | 1024 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1025 | memory read/write packet. MIN (rsa->remote_packet_size, |
1026 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1027 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1028 | (speed up transfers). The variables ``preferred_*'' (the user |
1029 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1030 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1031 | |
1032 | struct memory_packet_config | |
1033 | { | |
a121b7c1 | 1034 | const char *name; |
11cf8741 JM |
1035 | long size; |
1036 | int fixed_p; | |
1037 | }; | |
1038 | ||
a5c0808e PA |
1039 | /* The default max memory-write-packet-size. The 16k is historical. |
1040 | (It came from older GDB's using alloca for buffers and the | |
1041 | knowledge (folklore?) that some hosts don't cope very well with | |
1042 | large alloca calls.) */ | |
1043 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1044 | ||
1045 | /* The minimum remote packet size for memory transfers. Ensures we | |
1046 | can write at least one byte. */ | |
1047 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1048 | ||
11cf8741 JM |
1049 | /* Compute the current size of a read/write packet. Since this makes |
1050 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1051 | ||
1052 | static long | |
1053 | get_memory_packet_size (struct memory_packet_config *config) | |
1054 | { | |
d01949b6 | 1055 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1056 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1057 | ||
11cf8741 JM |
1058 | long what_they_get; |
1059 | if (config->fixed_p) | |
1060 | { | |
1061 | if (config->size <= 0) | |
a5c0808e | 1062 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1063 | else |
1064 | what_they_get = config->size; | |
1065 | } | |
1066 | else | |
1067 | { | |
ea9c271d | 1068 | what_they_get = get_remote_packet_size (); |
23860348 | 1069 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1070 | if (config->size > 0 |
1071 | && what_they_get > config->size) | |
1072 | what_they_get = config->size; | |
be2a5f71 DJ |
1073 | |
1074 | /* Limit it to the size of the targets ``g'' response unless we have | |
1075 | permission from the stub to use a larger packet size. */ | |
1076 | if (rs->explicit_packet_size == 0 | |
1077 | && rsa->actual_register_packet_size > 0 | |
1078 | && what_they_get > rsa->actual_register_packet_size) | |
1079 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1080 | } |
a5c0808e PA |
1081 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1082 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1083 | |
1084 | /* Make sure there is room in the global buffer for this packet | |
1085 | (including its trailing NUL byte). */ | |
1086 | if (rs->buf_size < what_they_get + 1) | |
1087 | { | |
1088 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1089 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1090 | } |
1091 | ||
11cf8741 JM |
1092 | return what_they_get; |
1093 | } | |
1094 | ||
0df8b418 | 1095 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1096 | something really big then do a sanity check. */ |
11cf8741 JM |
1097 | |
1098 | static void | |
1099 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1100 | { | |
1101 | int fixed_p = config->fixed_p; | |
1102 | long size = config->size; | |
a744cf53 | 1103 | |
11cf8741 | 1104 | if (args == NULL) |
8a3fe4f8 | 1105 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1106 | else if (strcmp (args, "hard") == 0 |
1107 | || strcmp (args, "fixed") == 0) | |
1108 | fixed_p = 1; | |
1109 | else if (strcmp (args, "soft") == 0 | |
1110 | || strcmp (args, "limit") == 0) | |
1111 | fixed_p = 0; | |
1112 | else | |
1113 | { | |
1114 | char *end; | |
a744cf53 | 1115 | |
11cf8741 JM |
1116 | size = strtoul (args, &end, 0); |
1117 | if (args == end) | |
8a3fe4f8 | 1118 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1119 | |
1120 | /* Instead of explicitly capping the size of a packet to or | |
1121 | disallowing it, the user is allowed to set the size to | |
1122 | something arbitrarily large. */ | |
11cf8741 | 1123 | } |
a5c0808e PA |
1124 | |
1125 | /* So that the query shows the correct value. */ | |
1126 | if (size <= 0) | |
1127 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1128 | ||
23860348 | 1129 | /* Extra checks? */ |
11cf8741 JM |
1130 | if (fixed_p && !config->fixed_p) |
1131 | { | |
e2e0b3e5 AC |
1132 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1133 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1134 | config->name, size)) |
8a3fe4f8 | 1135 | error (_("Packet size not changed.")); |
11cf8741 | 1136 | } |
23860348 | 1137 | /* Update the config. */ |
11cf8741 JM |
1138 | config->fixed_p = fixed_p; |
1139 | config->size = size; | |
1140 | } | |
1141 | ||
1142 | static void | |
1143 | show_memory_packet_size (struct memory_packet_config *config) | |
1144 | { | |
a3f17187 | 1145 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1146 | if (config->fixed_p) |
a3f17187 | 1147 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1148 | get_memory_packet_size (config)); |
1149 | else | |
a3f17187 | 1150 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1151 | get_memory_packet_size (config)); |
1152 | } | |
1153 | ||
1154 | static struct memory_packet_config memory_write_packet_config = | |
1155 | { | |
1156 | "memory-write-packet-size", | |
1157 | }; | |
1158 | ||
1159 | static void | |
1160 | set_memory_write_packet_size (char *args, int from_tty) | |
1161 | { | |
1162 | set_memory_packet_size (args, &memory_write_packet_config); | |
1163 | } | |
1164 | ||
1165 | static void | |
1166 | show_memory_write_packet_size (char *args, int from_tty) | |
1167 | { | |
1168 | show_memory_packet_size (&memory_write_packet_config); | |
1169 | } | |
1170 | ||
1171 | static long | |
1172 | get_memory_write_packet_size (void) | |
1173 | { | |
1174 | return get_memory_packet_size (&memory_write_packet_config); | |
1175 | } | |
1176 | ||
1177 | static struct memory_packet_config memory_read_packet_config = | |
1178 | { | |
1179 | "memory-read-packet-size", | |
1180 | }; | |
1181 | ||
1182 | static void | |
1183 | set_memory_read_packet_size (char *args, int from_tty) | |
1184 | { | |
1185 | set_memory_packet_size (args, &memory_read_packet_config); | |
1186 | } | |
1187 | ||
1188 | static void | |
1189 | show_memory_read_packet_size (char *args, int from_tty) | |
1190 | { | |
1191 | show_memory_packet_size (&memory_read_packet_config); | |
1192 | } | |
1193 | ||
1194 | static long | |
1195 | get_memory_read_packet_size (void) | |
1196 | { | |
1197 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1198 | |
11cf8741 JM |
1199 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1200 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1201 | increased beyond this. */ |
1202 | if (size > get_remote_packet_size ()) | |
1203 | size = get_remote_packet_size (); | |
11cf8741 JM |
1204 | return size; |
1205 | } | |
1206 | ||
11cf8741 | 1207 | \f |
5a2468f5 | 1208 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1209 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1210 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1211 | |
1212 | enum packet_support | |
1213 | { | |
1214 | PACKET_SUPPORT_UNKNOWN = 0, | |
1215 | PACKET_ENABLE, | |
1216 | PACKET_DISABLE | |
1217 | }; | |
1218 | ||
5a2468f5 JM |
1219 | struct packet_config |
1220 | { | |
bb572ddd DJ |
1221 | const char *name; |
1222 | const char *title; | |
4082afcc PA |
1223 | |
1224 | /* If auto, GDB auto-detects support for this packet or feature, | |
1225 | either through qSupported, or by trying the packet and looking | |
1226 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1227 | packet. If false, the packet is disabled. Configs that don't |
1228 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1229 | enum auto_boolean detect; |
4082afcc PA |
1230 | |
1231 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1232 | enum packet_support support; |
1233 | }; | |
1234 | ||
d471ea57 | 1235 | /* Analyze a packet's return value and update the packet config |
23860348 | 1236 | accordingly. */ |
d471ea57 AC |
1237 | |
1238 | enum packet_result | |
1239 | { | |
1240 | PACKET_ERROR, | |
1241 | PACKET_OK, | |
1242 | PACKET_UNKNOWN | |
1243 | }; | |
1244 | ||
4082afcc PA |
1245 | static enum packet_support packet_config_support (struct packet_config *config); |
1246 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1247 | |
1248 | static void | |
fba45db2 | 1249 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1250 | { |
a121b7c1 | 1251 | const char *support = "internal-error"; |
a744cf53 | 1252 | |
4082afcc | 1253 | switch (packet_config_support (config)) |
5a2468f5 JM |
1254 | { |
1255 | case PACKET_ENABLE: | |
1256 | support = "enabled"; | |
1257 | break; | |
1258 | case PACKET_DISABLE: | |
1259 | support = "disabled"; | |
1260 | break; | |
1261 | case PACKET_SUPPORT_UNKNOWN: | |
1262 | support = "unknown"; | |
1263 | break; | |
1264 | } | |
1265 | switch (config->detect) | |
1266 | { | |
7f19b9a2 | 1267 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1268 | printf_filtered (_("Support for the `%s' packet " |
1269 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1270 | config->name, support); |
5a2468f5 | 1271 | break; |
7f19b9a2 AC |
1272 | case AUTO_BOOLEAN_TRUE: |
1273 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1274 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1275 | config->name, support); | |
8e248173 | 1276 | break; |
5a2468f5 JM |
1277 | } |
1278 | } | |
1279 | ||
1280 | static void | |
bb572ddd DJ |
1281 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1282 | const char *title, int legacy) | |
d471ea57 | 1283 | { |
5a2468f5 JM |
1284 | char *set_doc; |
1285 | char *show_doc; | |
d471ea57 | 1286 | char *cmd_name; |
3ed07be4 | 1287 | |
5a2468f5 JM |
1288 | config->name = name; |
1289 | config->title = title; | |
b435e160 AC |
1290 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1291 | name, title); | |
3e43a32a MS |
1292 | show_doc = xstrprintf ("Show current use of remote " |
1293 | "protocol `%s' (%s) packet", | |
b435e160 | 1294 | name, title); |
d471ea57 | 1295 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1296 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1297 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1298 | &config->detect, set_doc, |
1299 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1300 | NULL, |
bb572ddd DJ |
1301 | show_remote_protocol_packet_cmd, |
1302 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1303 | /* The command code copies the documentation strings. */ |
1304 | xfree (set_doc); | |
1305 | xfree (show_doc); | |
23860348 | 1306 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1307 | if (legacy) |
1308 | { | |
1309 | char *legacy_name; | |
a744cf53 | 1310 | |
b435e160 | 1311 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1312 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1313 | &remote_set_cmdlist); |
d471ea57 | 1314 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1315 | &remote_show_cmdlist); |
d471ea57 | 1316 | } |
5a2468f5 JM |
1317 | } |
1318 | ||
d471ea57 | 1319 | static enum packet_result |
a76d924d | 1320 | packet_check_result (const char *buf) |
5a2468f5 | 1321 | { |
d471ea57 | 1322 | if (buf[0] != '\0') |
5a2468f5 | 1323 | { |
d471ea57 | 1324 | /* The stub recognized the packet request. Check that the |
23860348 | 1325 | operation succeeded. */ |
a76d924d DJ |
1326 | if (buf[0] == 'E' |
1327 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1328 | && buf[3] == '\0') | |
1329 | /* "Enn" - definitly an error. */ | |
1330 | return PACKET_ERROR; | |
1331 | ||
1332 | /* Always treat "E." as an error. This will be used for | |
1333 | more verbose error messages, such as E.memtypes. */ | |
1334 | if (buf[0] == 'E' && buf[1] == '.') | |
1335 | return PACKET_ERROR; | |
1336 | ||
1337 | /* The packet may or may not be OK. Just assume it is. */ | |
1338 | return PACKET_OK; | |
1339 | } | |
1340 | else | |
1341 | /* The stub does not support the packet. */ | |
1342 | return PACKET_UNKNOWN; | |
1343 | } | |
1344 | ||
1345 | static enum packet_result | |
1346 | packet_ok (const char *buf, struct packet_config *config) | |
1347 | { | |
1348 | enum packet_result result; | |
1349 | ||
4082afcc PA |
1350 | if (config->detect != AUTO_BOOLEAN_TRUE |
1351 | && config->support == PACKET_DISABLE) | |
1352 | internal_error (__FILE__, __LINE__, | |
1353 | _("packet_ok: attempt to use a disabled packet")); | |
1354 | ||
a76d924d DJ |
1355 | result = packet_check_result (buf); |
1356 | switch (result) | |
1357 | { | |
1358 | case PACKET_OK: | |
1359 | case PACKET_ERROR: | |
1360 | /* The stub recognized the packet request. */ | |
4082afcc | 1361 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1362 | { |
d471ea57 AC |
1363 | if (remote_debug) |
1364 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1365 | "Packet %s (%s) is supported\n", |
1366 | config->name, config->title); | |
d471ea57 | 1367 | config->support = PACKET_ENABLE; |
d471ea57 | 1368 | } |
a76d924d DJ |
1369 | break; |
1370 | case PACKET_UNKNOWN: | |
23860348 | 1371 | /* The stub does not support the packet. */ |
4082afcc PA |
1372 | if (config->detect == AUTO_BOOLEAN_AUTO |
1373 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1374 | { |
4082afcc PA |
1375 | /* If the stub previously indicated that the packet was |
1376 | supported then there is a protocol error. */ | |
1377 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1378 | config->name, config->title); | |
1379 | } | |
1380 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1381 | { | |
1382 | /* The user set it wrong. */ | |
1383 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1384 | config->name, config->title); | |
d471ea57 | 1385 | } |
4082afcc PA |
1386 | |
1387 | if (remote_debug) | |
1388 | fprintf_unfiltered (gdb_stdlog, | |
1389 | "Packet %s (%s) is NOT supported\n", | |
1390 | config->name, config->title); | |
1391 | config->support = PACKET_DISABLE; | |
a76d924d | 1392 | break; |
5a2468f5 | 1393 | } |
a76d924d DJ |
1394 | |
1395 | return result; | |
5a2468f5 JM |
1396 | } |
1397 | ||
444abaca DJ |
1398 | enum { |
1399 | PACKET_vCont = 0, | |
1400 | PACKET_X, | |
1401 | PACKET_qSymbol, | |
1402 | PACKET_P, | |
1403 | PACKET_p, | |
1404 | PACKET_Z0, | |
1405 | PACKET_Z1, | |
1406 | PACKET_Z2, | |
1407 | PACKET_Z3, | |
1408 | PACKET_Z4, | |
15a201c8 | 1409 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1410 | PACKET_vFile_open, |
1411 | PACKET_vFile_pread, | |
1412 | PACKET_vFile_pwrite, | |
1413 | PACKET_vFile_close, | |
1414 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1415 | PACKET_vFile_readlink, |
0a93529c | 1416 | PACKET_vFile_fstat, |
0876f84a | 1417 | PACKET_qXfer_auxv, |
23181151 | 1418 | PACKET_qXfer_features, |
c78fa86a | 1419 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1420 | PACKET_qXfer_libraries, |
2268b414 | 1421 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1422 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1423 | PACKET_qXfer_spu_read, |
1424 | PACKET_qXfer_spu_write, | |
07e059b5 | 1425 | PACKET_qXfer_osdata, |
dc146f7c | 1426 | PACKET_qXfer_threads, |
0fb4aa4b | 1427 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1428 | PACKET_qXfer_traceframe_info, |
169081d0 | 1429 | PACKET_qXfer_uib, |
711e434b | 1430 | PACKET_qGetTIBAddr, |
444abaca | 1431 | PACKET_qGetTLSAddr, |
be2a5f71 | 1432 | PACKET_qSupported, |
bd3eecc3 | 1433 | PACKET_qTStatus, |
89be2091 | 1434 | PACKET_QPassSignals, |
82075af2 | 1435 | PACKET_QCatchSyscalls, |
9b224c5e | 1436 | PACKET_QProgramSignals, |
aefd8b33 | 1437 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1438 | PACKET_QEnvironmentHexEncoded, |
1439 | PACKET_QEnvironmentReset, | |
1440 | PACKET_QEnvironmentUnset, | |
936d2992 | 1441 | PACKET_qCRC, |
08388c79 | 1442 | PACKET_qSearch_memory, |
2d717e4f DJ |
1443 | PACKET_vAttach, |
1444 | PACKET_vRun, | |
a6f3e723 | 1445 | PACKET_QStartNoAckMode, |
82f73884 | 1446 | PACKET_vKill, |
4aa995e1 PA |
1447 | PACKET_qXfer_siginfo_read, |
1448 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1449 | PACKET_qAttached, |
4082afcc PA |
1450 | |
1451 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1452 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1453 | |
1454 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1455 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1456 | |
1457 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1458 | PACKET_BreakpointCommands, |
4082afcc PA |
1459 | |
1460 | /* Support for fast tracepoints. */ | |
7a697b8d | 1461 | PACKET_FastTracepoints, |
4082afcc PA |
1462 | |
1463 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1464 | PACKET_StaticTracepoints, |
4082afcc PA |
1465 | |
1466 | /* Support for installing tracepoints while a trace experiment is | |
1467 | running. */ | |
1e4d1764 | 1468 | PACKET_InstallInTrace, |
4082afcc | 1469 | |
40ab02ce MS |
1470 | PACKET_bc, |
1471 | PACKET_bs, | |
409873ef | 1472 | PACKET_TracepointSource, |
d914c394 | 1473 | PACKET_QAllow, |
78d85199 | 1474 | PACKET_qXfer_fdpic, |
03583c20 | 1475 | PACKET_QDisableRandomization, |
d1feda86 | 1476 | PACKET_QAgent, |
f6f899bf | 1477 | PACKET_QTBuffer_size, |
9accd112 MM |
1478 | PACKET_Qbtrace_off, |
1479 | PACKET_Qbtrace_bts, | |
b20a6524 | 1480 | PACKET_Qbtrace_pt, |
9accd112 | 1481 | PACKET_qXfer_btrace, |
4082afcc PA |
1482 | |
1483 | /* Support for the QNonStop packet. */ | |
1484 | PACKET_QNonStop, | |
1485 | ||
65706a29 PA |
1486 | /* Support for the QThreadEvents packet. */ |
1487 | PACKET_QThreadEvents, | |
1488 | ||
4082afcc PA |
1489 | /* Support for multi-process extensions. */ |
1490 | PACKET_multiprocess_feature, | |
1491 | ||
1492 | /* Support for enabling and disabling tracepoints while a trace | |
1493 | experiment is running. */ | |
1494 | PACKET_EnableDisableTracepoints_feature, | |
1495 | ||
1496 | /* Support for collecting strings using the tracenz bytecode. */ | |
1497 | PACKET_tracenz_feature, | |
1498 | ||
1499 | /* Support for continuing to run a trace experiment while GDB is | |
1500 | disconnected. */ | |
1501 | PACKET_DisconnectedTracing_feature, | |
1502 | ||
1503 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1504 | PACKET_augmented_libraries_svr4_read_feature, | |
1505 | ||
f4abbc16 MM |
1506 | /* Support for the qXfer:btrace-conf:read packet. */ |
1507 | PACKET_qXfer_btrace_conf, | |
1508 | ||
d33501a5 MM |
1509 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1510 | PACKET_Qbtrace_conf_bts_size, | |
1511 | ||
f7e6eed5 PA |
1512 | /* Support for swbreak+ feature. */ |
1513 | PACKET_swbreak_feature, | |
1514 | ||
1515 | /* Support for hwbreak+ feature. */ | |
1516 | PACKET_hwbreak_feature, | |
1517 | ||
89245bc0 DB |
1518 | /* Support for fork events. */ |
1519 | PACKET_fork_event_feature, | |
1520 | ||
1521 | /* Support for vfork events. */ | |
1522 | PACKET_vfork_event_feature, | |
1523 | ||
b20a6524 MM |
1524 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1525 | PACKET_Qbtrace_conf_pt_size, | |
1526 | ||
94585166 DB |
1527 | /* Support for exec events. */ |
1528 | PACKET_exec_event_feature, | |
1529 | ||
750ce8d1 YQ |
1530 | /* Support for query supported vCont actions. */ |
1531 | PACKET_vContSupported, | |
1532 | ||
de979965 PA |
1533 | /* Support remote CTRL-C. */ |
1534 | PACKET_vCtrlC, | |
1535 | ||
f2faf941 PA |
1536 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1537 | PACKET_no_resumed, | |
1538 | ||
444abaca DJ |
1539 | PACKET_MAX |
1540 | }; | |
506fb367 | 1541 | |
444abaca | 1542 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1543 | |
f7e6eed5 PA |
1544 | /* Returns the packet's corresponding "set remote foo-packet" command |
1545 | state. See struct packet_config for more details. */ | |
1546 | ||
1547 | static enum auto_boolean | |
1548 | packet_set_cmd_state (int packet) | |
1549 | { | |
1550 | return remote_protocol_packets[packet].detect; | |
1551 | } | |
1552 | ||
4082afcc PA |
1553 | /* Returns whether a given packet or feature is supported. This takes |
1554 | into account the state of the corresponding "set remote foo-packet" | |
1555 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1556 | |
4082afcc PA |
1557 | static enum packet_support |
1558 | packet_config_support (struct packet_config *config) | |
1559 | { | |
1560 | switch (config->detect) | |
444abaca | 1561 | { |
4082afcc PA |
1562 | case AUTO_BOOLEAN_TRUE: |
1563 | return PACKET_ENABLE; | |
1564 | case AUTO_BOOLEAN_FALSE: | |
1565 | return PACKET_DISABLE; | |
1566 | case AUTO_BOOLEAN_AUTO: | |
1567 | return config->support; | |
1568 | default: | |
1569 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1570 | } |
4082afcc PA |
1571 | } |
1572 | ||
1573 | /* Same as packet_config_support, but takes the packet's enum value as | |
1574 | argument. */ | |
1575 | ||
1576 | static enum packet_support | |
1577 | packet_support (int packet) | |
1578 | { | |
1579 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1580 | ||
1581 | return packet_config_support (config); | |
dc8acb97 MS |
1582 | } |
1583 | ||
5a2468f5 | 1584 | static void |
444abaca DJ |
1585 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1586 | struct cmd_list_element *c, | |
1587 | const char *value) | |
5a2468f5 | 1588 | { |
444abaca | 1589 | struct packet_config *packet; |
5a2468f5 | 1590 | |
444abaca DJ |
1591 | for (packet = remote_protocol_packets; |
1592 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1593 | packet++) | |
1594 | { | |
1595 | if (&packet->detect == c->var) | |
1596 | { | |
1597 | show_packet_config_cmd (packet); | |
1598 | return; | |
1599 | } | |
1600 | } | |
9b20d036 | 1601 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1602 | c->name); |
5a2468f5 JM |
1603 | } |
1604 | ||
d471ea57 AC |
1605 | /* Should we try one of the 'Z' requests? */ |
1606 | ||
1607 | enum Z_packet_type | |
1608 | { | |
1609 | Z_PACKET_SOFTWARE_BP, | |
1610 | Z_PACKET_HARDWARE_BP, | |
1611 | Z_PACKET_WRITE_WP, | |
1612 | Z_PACKET_READ_WP, | |
1613 | Z_PACKET_ACCESS_WP, | |
1614 | NR_Z_PACKET_TYPES | |
1615 | }; | |
96baa820 | 1616 | |
d471ea57 | 1617 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1618 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1619 | |
7f19b9a2 | 1620 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1621 | |
1622 | static void | |
fba45db2 KB |
1623 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1624 | struct cmd_list_element *c) | |
96baa820 | 1625 | { |
d471ea57 | 1626 | int i; |
a744cf53 | 1627 | |
d471ea57 | 1628 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1629 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1630 | } |
1631 | ||
1632 | static void | |
08546159 AC |
1633 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1634 | struct cmd_list_element *c, | |
1635 | const char *value) | |
96baa820 | 1636 | { |
d471ea57 | 1637 | int i; |
a744cf53 | 1638 | |
d471ea57 AC |
1639 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1640 | { | |
444abaca | 1641 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1642 | } |
96baa820 JM |
1643 | } |
1644 | ||
4082afcc PA |
1645 | /* Returns true if the multi-process extensions are in effect. */ |
1646 | ||
1647 | static int | |
1648 | remote_multi_process_p (struct remote_state *rs) | |
1649 | { | |
1650 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1651 | } | |
1652 | ||
de0d863e DB |
1653 | /* Returns true if fork events are supported. */ |
1654 | ||
1655 | static int | |
1656 | remote_fork_event_p (struct remote_state *rs) | |
1657 | { | |
1658 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1659 | } | |
1660 | ||
c269dbdb DB |
1661 | /* Returns true if vfork events are supported. */ |
1662 | ||
1663 | static int | |
1664 | remote_vfork_event_p (struct remote_state *rs) | |
1665 | { | |
1666 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1667 | } | |
1668 | ||
d46addbb DB |
1669 | /* Returns true if exec events are supported. */ |
1670 | ||
1671 | static int | |
1672 | remote_exec_event_p (struct remote_state *rs) | |
1673 | { | |
1674 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1675 | } | |
1676 | ||
cbb8991c DB |
1677 | /* Insert fork catchpoint target routine. If fork events are enabled |
1678 | then return success, nothing more to do. */ | |
1679 | ||
1680 | static int | |
1681 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1682 | { | |
1683 | struct remote_state *rs = get_remote_state (); | |
1684 | ||
1685 | return !remote_fork_event_p (rs); | |
1686 | } | |
1687 | ||
1688 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1689 | return success. */ | |
1690 | ||
1691 | static int | |
1692 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1693 | { | |
1694 | return 0; | |
1695 | } | |
1696 | ||
1697 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1698 | then return success, nothing more to do. */ | |
1699 | ||
1700 | static int | |
1701 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1702 | { | |
1703 | struct remote_state *rs = get_remote_state (); | |
1704 | ||
1705 | return !remote_vfork_event_p (rs); | |
1706 | } | |
1707 | ||
1708 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1709 | return success. */ | |
1710 | ||
1711 | static int | |
1712 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1713 | { | |
1714 | return 0; | |
1715 | } | |
1716 | ||
d46addbb DB |
1717 | /* Insert exec catchpoint target routine. If exec events are |
1718 | enabled, just return success. */ | |
1719 | ||
1720 | static int | |
1721 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1722 | { | |
1723 | struct remote_state *rs = get_remote_state (); | |
1724 | ||
1725 | return !remote_exec_event_p (rs); | |
1726 | } | |
1727 | ||
1728 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1729 | return success. */ | |
1730 | ||
1731 | static int | |
1732 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1733 | { | |
1734 | return 0; | |
1735 | } | |
1736 | ||
74531fed PA |
1737 | \f |
1738 | /* Asynchronous signal handle registered as event loop source for | |
1739 | when we have pending events ready to be passed to the core. */ | |
1740 | ||
1741 | static struct async_event_handler *remote_async_inferior_event_token; | |
1742 | ||
c906108c SS |
1743 | \f |
1744 | ||
79d7f229 PA |
1745 | static ptid_t magic_null_ptid; |
1746 | static ptid_t not_sent_ptid; | |
1747 | static ptid_t any_thread_ptid; | |
1748 | ||
0b16c5cf PA |
1749 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1750 | detach instead of killing it when bailing out). */ | |
1751 | ||
1752 | static int | |
1753 | remote_query_attached (int pid) | |
1754 | { | |
1755 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1756 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1757 | |
4082afcc | 1758 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1759 | return 0; |
1760 | ||
1761 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1762 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1763 | else |
bba74b36 | 1764 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1765 | |
1766 | putpkt (rs->buf); | |
1767 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1768 | ||
1769 | switch (packet_ok (rs->buf, | |
1554e9be | 1770 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1771 | { |
1772 | case PACKET_OK: | |
1773 | if (strcmp (rs->buf, "1") == 0) | |
1774 | return 1; | |
1775 | break; | |
1776 | case PACKET_ERROR: | |
1777 | warning (_("Remote failure reply: %s"), rs->buf); | |
1778 | break; | |
1779 | case PACKET_UNKNOWN: | |
1780 | break; | |
1781 | } | |
1782 | ||
1783 | return 0; | |
1784 | } | |
1785 | ||
49c62f2e PA |
1786 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1787 | has been invented by GDB, instead of reported by the target. Since | |
1788 | we can be connected to a remote system before before knowing about | |
1789 | any inferior, mark the target with execution when we find the first | |
1790 | inferior. If ATTACHED is 1, then we had just attached to this | |
1791 | inferior. If it is 0, then we just created this inferior. If it | |
1792 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1793 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1794 | attempt to open this inferior's executable as the main executable | |
1795 | if no main executable is open already. */ | |
1941c569 PA |
1796 | |
1797 | static struct inferior * | |
1b6e6f5c GB |
1798 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1799 | int try_open_exec) | |
1941c569 | 1800 | { |
1941c569 PA |
1801 | struct inferior *inf; |
1802 | ||
0b16c5cf PA |
1803 | /* Check whether this process we're learning about is to be |
1804 | considered attached, or if is to be considered to have been | |
1805 | spawned by the stub. */ | |
1806 | if (attached == -1) | |
1807 | attached = remote_query_attached (pid); | |
1808 | ||
f5656ead | 1809 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1810 | { |
1811 | /* If the target shares code across all inferiors, then every | |
1812 | attach adds a new inferior. */ | |
1813 | inf = add_inferior (pid); | |
1814 | ||
1815 | /* ... and every inferior is bound to the same program space. | |
1816 | However, each inferior may still have its own address | |
1817 | space. */ | |
1818 | inf->aspace = maybe_new_address_space (); | |
1819 | inf->pspace = current_program_space; | |
1820 | } | |
1821 | else | |
1822 | { | |
1823 | /* In the traditional debugging scenario, there's a 1-1 match | |
1824 | between program/address spaces. We simply bind the inferior | |
1825 | to the program space's address space. */ | |
1826 | inf = current_inferior (); | |
1827 | inferior_appeared (inf, pid); | |
1828 | } | |
1941c569 | 1829 | |
0b16c5cf | 1830 | inf->attach_flag = attached; |
49c62f2e | 1831 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1832 | |
1b6e6f5c GB |
1833 | /* If no main executable is currently open then attempt to |
1834 | open the file that was executed to create this inferior. */ | |
835205d0 | 1835 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 1836 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 1837 | |
1941c569 PA |
1838 | return inf; |
1839 | } | |
1840 | ||
85ad3aaf PA |
1841 | static struct private_thread_info * |
1842 | get_private_info_thread (struct thread_info *info); | |
1843 | ||
1941c569 PA |
1844 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
1845 | according to RUNNING. */ | |
1846 | ||
c906108c | 1847 | static void |
0d5b594f | 1848 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 1849 | { |
b7ea362b | 1850 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 1851 | struct thread_info *thread; |
b7ea362b PA |
1852 | |
1853 | /* GDB historically didn't pull threads in the initial connection | |
1854 | setup. If the remote target doesn't even have a concept of | |
1855 | threads (e.g., a bare-metal target), even if internally we | |
1856 | consider that a single-threaded target, mentioning a new thread | |
1857 | might be confusing to the user. Be silent then, preserving the | |
1858 | age old behavior. */ | |
1859 | if (rs->starting_up) | |
85ad3aaf | 1860 | thread = add_thread_silent (ptid); |
b7ea362b | 1861 | else |
85ad3aaf | 1862 | thread = add_thread (ptid); |
1941c569 | 1863 | |
85ad3aaf | 1864 | get_private_info_thread (thread)->vcont_resumed = executing; |
0d5b594f | 1865 | set_executing (ptid, executing); |
1941c569 PA |
1866 | set_running (ptid, running); |
1867 | } | |
1868 | ||
1869 | /* Come here when we learn about a thread id from the remote target. | |
1870 | It may be the first time we hear about such thread, so take the | |
1871 | opportunity to add it to GDB's thread list. In case this is the | |
1872 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
1873 | GDB's inferior list as well. EXECUTING indicates whether the |
1874 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
1875 | |
1876 | static void | |
0d5b594f | 1877 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 1878 | { |
0d5b594f PA |
1879 | /* In non-stop mode, we assume new found threads are (externally) |
1880 | running until proven otherwise with a stop reply. In all-stop, | |
1881 | we can only get here if all threads are stopped. */ | |
1882 | int running = target_is_non_stop_p () ? 1 : 0; | |
1883 | ||
c906108c SS |
1884 | /* If this is a new thread, add it to GDB's thread list. |
1885 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1886 | |
1887 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1888 | { | |
1889 | /* We're seeing an event on a thread id we knew had exited. | |
1890 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 1891 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
1892 | return; |
1893 | } | |
1894 | ||
79d7f229 | 1895 | if (!in_thread_list (currthread)) |
c0a2216e | 1896 | { |
1941c569 | 1897 | struct inferior *inf = NULL; |
bad34192 | 1898 | int pid = ptid_get_pid (currthread); |
1941c569 | 1899 | |
bad34192 PA |
1900 | if (ptid_is_pid (inferior_ptid) |
1901 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1902 | { |
1903 | /* inferior_ptid has no thread member yet. This can happen | |
1904 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1905 | stub doesn't support qC. This is the first stop reported | |
1906 | after an attach, so this is the main thread. Update the | |
1907 | ptid in the thread list. */ | |
bad34192 PA |
1908 | if (in_thread_list (pid_to_ptid (pid))) |
1909 | thread_change_ptid (inferior_ptid, currthread); | |
1910 | else | |
1911 | { | |
0d5b594f | 1912 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
1913 | inferior_ptid = currthread; |
1914 | } | |
dc146f7c | 1915 | return; |
c0a2216e | 1916 | } |
82f73884 PA |
1917 | |
1918 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1919 | { |
1920 | /* inferior_ptid is not set yet. This can happen with the | |
1921 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1922 | doesn't support qC. This is the first stop reported | |
1923 | after an attach, so this is the main thread. Update the | |
1924 | ptid in the thread list. */ | |
dc146f7c | 1925 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1926 | return; |
c0a2216e | 1927 | } |
82f73884 | 1928 | |
29c87f7f PA |
1929 | /* When connecting to a target remote, or to a target |
1930 | extended-remote which already was debugging an inferior, we | |
1931 | may not know about it yet. Add it before adding its child | |
1932 | thread, so notifications are emitted in a sensible order. */ | |
1933 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1934 | { |
1935 | struct remote_state *rs = get_remote_state (); | |
1936 | int fake_pid_p = !remote_multi_process_p (rs); | |
1937 | ||
1938 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1939 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1940 | } |
29c87f7f | 1941 | |
82f73884 | 1942 | /* This is really a new thread. Add it. */ |
0d5b594f | 1943 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
1944 | |
1945 | /* If we found a new inferior, let the common code do whatever | |
1946 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1947 | breakpoints), unless we're just setting up an all-stop |
1948 | connection. */ | |
1941c569 | 1949 | if (inf != NULL) |
b7ea362b PA |
1950 | { |
1951 | struct remote_state *rs = get_remote_state (); | |
1952 | ||
6efcd9a8 | 1953 | if (!rs->starting_up) |
0d5b594f | 1954 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 1955 | } |
c0a2216e | 1956 | } |
c906108c SS |
1957 | } |
1958 | ||
85ad3aaf | 1959 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 1960 | |
70221824 | 1961 | static struct private_thread_info * |
85ad3aaf | 1962 | get_private_info_thread (struct thread_info *thread) |
dc146f7c | 1963 | { |
85ad3aaf | 1964 | gdb_assert (thread != NULL); |
dc146f7c | 1965 | |
85ad3aaf | 1966 | if (thread->priv == NULL) |
dc146f7c | 1967 | { |
85ad3aaf PA |
1968 | struct private_thread_info *priv = XNEW (struct private_thread_info); |
1969 | ||
1970 | thread->private_dtor = free_private_thread_info; | |
1971 | thread->priv = priv; | |
1972 | ||
1973 | priv->core = -1; | |
1974 | priv->extra = NULL; | |
1975 | priv->name = NULL; | |
1976 | priv->name = NULL; | |
1977 | priv->last_resume_step = 0; | |
1978 | priv->last_resume_sig = GDB_SIGNAL_0; | |
1979 | priv->vcont_resumed = 0; | |
f6327dcb | 1980 | priv->thread_handle = nullptr; |
dc146f7c VP |
1981 | } |
1982 | ||
85ad3aaf PA |
1983 | return thread->priv; |
1984 | } | |
1985 | ||
1986 | /* Return PTID's private thread data, creating it if necessary. */ | |
1987 | ||
1988 | static struct private_thread_info * | |
1989 | get_private_info_ptid (ptid_t ptid) | |
1990 | { | |
1991 | struct thread_info *info = find_thread_ptid (ptid); | |
1992 | ||
1993 | return get_private_info_thread (info); | |
dc146f7c VP |
1994 | } |
1995 | ||
74531fed PA |
1996 | /* Call this function as a result of |
1997 | 1) A halt indication (T packet) containing a thread id | |
1998 | 2) A direct query of currthread | |
0df8b418 | 1999 | 3) Successful execution of set thread */ |
74531fed PA |
2000 | |
2001 | static void | |
47f8a51d | 2002 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2003 | { |
47f8a51d | 2004 | rs->general_thread = currthread; |
74531fed PA |
2005 | } |
2006 | ||
89be2091 DJ |
2007 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2008 | it can simply pass through to the inferior without reporting. */ | |
2009 | ||
2010 | static void | |
94bedb42 TT |
2011 | remote_pass_signals (struct target_ops *self, |
2012 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 2013 | { |
4082afcc | 2014 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2015 | { |
2016 | char *pass_packet, *p; | |
89be2091 | 2017 | int count = 0, i; |
747dc59d | 2018 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
2019 | |
2020 | gdb_assert (numsigs < 256); | |
2021 | for (i = 0; i < numsigs; i++) | |
2022 | { | |
2455069d | 2023 | if (pass_signals[i]) |
89be2091 DJ |
2024 | count++; |
2025 | } | |
224c3ddb | 2026 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2027 | strcpy (pass_packet, "QPassSignals:"); |
2028 | p = pass_packet + strlen (pass_packet); | |
2029 | for (i = 0; i < numsigs; i++) | |
2030 | { | |
2455069d | 2031 | if (pass_signals[i]) |
89be2091 DJ |
2032 | { |
2033 | if (i >= 16) | |
2034 | *p++ = tohex (i >> 4); | |
2035 | *p++ = tohex (i & 15); | |
2036 | if (count) | |
2037 | *p++ = ';'; | |
2038 | else | |
2039 | break; | |
2040 | count--; | |
2041 | } | |
2042 | } | |
2043 | *p = 0; | |
747dc59d | 2044 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2045 | { |
89be2091 DJ |
2046 | putpkt (pass_packet); |
2047 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2048 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2049 | if (rs->last_pass_packet) |
2050 | xfree (rs->last_pass_packet); | |
2051 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2052 | } |
2053 | else | |
2054 | xfree (pass_packet); | |
2055 | } | |
2056 | } | |
2057 | ||
82075af2 JS |
2058 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2059 | to report syscalls to GDB. */ | |
2060 | ||
2061 | static int | |
2062 | remote_set_syscall_catchpoint (struct target_ops *self, | |
2063 | int pid, int needed, int any_count, | |
2064 | int table_size, int *table) | |
2065 | { | |
2066 | char *catch_packet; | |
2067 | enum packet_result result; | |
2068 | int n_sysno = 0; | |
2069 | ||
2070 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2071 | { | |
2072 | /* Not supported. */ | |
2073 | return 1; | |
2074 | } | |
2075 | ||
2076 | if (needed && !any_count) | |
2077 | { | |
2078 | int i; | |
2079 | ||
2080 | /* Count how many syscalls are to be caught (table[sysno] != 0). */ | |
2081 | for (i = 0; i < table_size; i++) | |
2082 | { | |
2083 | if (table[i] != 0) | |
2084 | n_sysno++; | |
2085 | } | |
2086 | } | |
2087 | ||
2088 | if (remote_debug) | |
2089 | { | |
2090 | fprintf_unfiltered (gdb_stdlog, | |
2091 | "remote_set_syscall_catchpoint " | |
2092 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2093 | pid, needed, any_count, n_sysno); | |
2094 | } | |
2095 | ||
2096 | if (needed) | |
2097 | { | |
2098 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2099 | characters for a sysno. If the resulting packet size is too | |
2100 | big, fallback on the non-selective packet. */ | |
2101 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
2102 | ||
c0518081 | 2103 | catch_packet = (char *) xmalloc (maxpktsz); |
82075af2 JS |
2104 | strcpy (catch_packet, "QCatchSyscalls:1"); |
2105 | if (!any_count) | |
2106 | { | |
2107 | int i; | |
2108 | char *p; | |
2109 | ||
2110 | p = catch_packet; | |
2111 | p += strlen (p); | |
2112 | ||
2113 | /* Add in catch_packet each syscall to be caught (table[i] != 0). */ | |
2114 | for (i = 0; i < table_size; i++) | |
2115 | { | |
2116 | if (table[i] != 0) | |
2117 | p += xsnprintf (p, catch_packet + maxpktsz - p, ";%x", i); | |
2118 | } | |
2119 | } | |
2120 | if (strlen (catch_packet) > get_remote_packet_size ()) | |
2121 | { | |
2122 | /* catch_packet too big. Fallback to less efficient | |
2123 | non selective mode, with GDB doing the filtering. */ | |
2124 | catch_packet[sizeof ("QCatchSyscalls:1") - 1] = 0; | |
2125 | } | |
2126 | } | |
2127 | else | |
2128 | catch_packet = xstrdup ("QCatchSyscalls:0"); | |
2129 | ||
2130 | { | |
2131 | struct cleanup *old_chain = make_cleanup (xfree, catch_packet); | |
2132 | struct remote_state *rs = get_remote_state (); | |
2133 | ||
2134 | putpkt (catch_packet); | |
2135 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2136 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2137 | do_cleanups (old_chain); | |
2138 | if (result == PACKET_OK) | |
2139 | return 0; | |
2140 | else | |
2141 | return -1; | |
2142 | } | |
2143 | } | |
2144 | ||
9b224c5e PA |
2145 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2146 | signals it should pass through to the inferior when detaching. */ | |
2147 | ||
2148 | static void | |
daf5e9b6 TT |
2149 | remote_program_signals (struct target_ops *self, |
2150 | int numsigs, unsigned char *signals) | |
9b224c5e | 2151 | { |
4082afcc | 2152 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2153 | { |
2154 | char *packet, *p; | |
2155 | int count = 0, i; | |
5e4a05c4 | 2156 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2157 | |
2158 | gdb_assert (numsigs < 256); | |
2159 | for (i = 0; i < numsigs; i++) | |
2160 | { | |
2161 | if (signals[i]) | |
2162 | count++; | |
2163 | } | |
224c3ddb | 2164 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2165 | strcpy (packet, "QProgramSignals:"); |
2166 | p = packet + strlen (packet); | |
2167 | for (i = 0; i < numsigs; i++) | |
2168 | { | |
2169 | if (signal_pass_state (i)) | |
2170 | { | |
2171 | if (i >= 16) | |
2172 | *p++ = tohex (i >> 4); | |
2173 | *p++ = tohex (i & 15); | |
2174 | if (count) | |
2175 | *p++ = ';'; | |
2176 | else | |
2177 | break; | |
2178 | count--; | |
2179 | } | |
2180 | } | |
2181 | *p = 0; | |
5e4a05c4 TT |
2182 | if (!rs->last_program_signals_packet |
2183 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2184 | { |
9b224c5e PA |
2185 | putpkt (packet); |
2186 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2187 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2188 | xfree (rs->last_program_signals_packet); |
2189 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2190 | } |
2191 | else | |
2192 | xfree (packet); | |
2193 | } | |
2194 | } | |
2195 | ||
79d7f229 PA |
2196 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2197 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2198 | thread. If GEN is set, set the general thread, if not, then set | |
2199 | the step/continue thread. */ | |
c906108c | 2200 | static void |
d62a8ae2 | 2201 | set_thread (ptid_t ptid, int gen) |
c906108c | 2202 | { |
d01949b6 | 2203 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2204 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2205 | char *buf = rs->buf; |
79d7f229 | 2206 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2207 | |
79d7f229 | 2208 | if (ptid_equal (state, ptid)) |
c906108c SS |
2209 | return; |
2210 | ||
79d7f229 PA |
2211 | *buf++ = 'H'; |
2212 | *buf++ = gen ? 'g' : 'c'; | |
2213 | if (ptid_equal (ptid, magic_null_ptid)) | |
2214 | xsnprintf (buf, endbuf - buf, "0"); | |
2215 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2216 | xsnprintf (buf, endbuf - buf, "0"); | |
2217 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2218 | xsnprintf (buf, endbuf - buf, "-1"); | |
2219 | else | |
82f73884 | 2220 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2221 | putpkt (rs->buf); |
6d820c5c | 2222 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2223 | if (gen) |
47f8a51d | 2224 | rs->general_thread = ptid; |
c906108c | 2225 | else |
47f8a51d | 2226 | rs->continue_thread = ptid; |
c906108c | 2227 | } |
79d7f229 PA |
2228 | |
2229 | static void | |
d62a8ae2 | 2230 | set_general_thread (ptid_t ptid) |
79d7f229 PA |
2231 | { |
2232 | set_thread (ptid, 1); | |
2233 | } | |
2234 | ||
2235 | static void | |
d62a8ae2 | 2236 | set_continue_thread (ptid_t ptid) |
79d7f229 PA |
2237 | { |
2238 | set_thread (ptid, 0); | |
2239 | } | |
2240 | ||
3c9c4b83 PA |
2241 | /* Change the remote current process. Which thread within the process |
2242 | ends up selected isn't important, as long as it is the same process | |
2243 | as what INFERIOR_PTID points to. | |
2244 | ||
2245 | This comes from that fact that there is no explicit notion of | |
2246 | "selected process" in the protocol. The selected process for | |
2247 | general operations is the process the selected general thread | |
2248 | belongs to. */ | |
2249 | ||
2250 | static void | |
2251 | set_general_process (void) | |
2252 | { | |
2253 | struct remote_state *rs = get_remote_state (); | |
2254 | ||
2255 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2256 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2257 | return; |
2258 | ||
2259 | /* We only need to change the remote current thread if it's pointing | |
2260 | at some other process. */ | |
47f8a51d | 2261 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2262 | set_general_thread (inferior_ptid); |
2263 | } | |
2264 | ||
c906108c | 2265 | \f |
7d1a114c PA |
2266 | /* Return nonzero if this is the main thread that we made up ourselves |
2267 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2268 | |
2269 | static int | |
7d1a114c | 2270 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2271 | { |
c0a2216e PA |
2272 | if (ptid_equal (ptid, magic_null_ptid)) |
2273 | /* The main thread is always alive. */ | |
2274 | return 1; | |
2275 | ||
ba348170 | 2276 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2277 | /* The main thread is always alive. This can happen after a |
2278 | vAttach, if the remote side doesn't support | |
2279 | multi-threading. */ | |
2280 | return 1; | |
2281 | ||
7d1a114c PA |
2282 | return 0; |
2283 | } | |
2284 | ||
2285 | /* Return nonzero if the thread PTID is still alive on the remote | |
2286 | system. */ | |
2287 | ||
2288 | static int | |
2289 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2290 | { | |
2291 | struct remote_state *rs = get_remote_state (); | |
2292 | char *p, *endp; | |
2293 | ||
2294 | /* Check if this is a thread that we made up ourselves to model | |
2295 | non-threaded targets as single-threaded. */ | |
2296 | if (remote_thread_always_alive (ops, ptid)) | |
2297 | return 1; | |
2298 | ||
82f73884 PA |
2299 | p = rs->buf; |
2300 | endp = rs->buf + get_remote_packet_size (); | |
2301 | ||
2302 | *p++ = 'T'; | |
2303 | write_ptid (p, endp, ptid); | |
2304 | ||
2e9f7625 | 2305 | putpkt (rs->buf); |
6d820c5c | 2306 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2307 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2308 | } |
2309 | ||
79efa585 SM |
2310 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2311 | The thread_info object owns the memory for the name. */ | |
2312 | ||
2313 | static const char * | |
2314 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2315 | { | |
2316 | if (info->priv != NULL) | |
2317 | return info->priv->name; | |
2318 | ||
2319 | return NULL; | |
2320 | } | |
2321 | ||
c906108c SS |
2322 | /* About these extended threadlist and threadinfo packets. They are |
2323 | variable length packets but, the fields within them are often fixed | |
2324 | length. They are redundent enough to send over UDP as is the | |
2325 | remote protocol in general. There is a matching unit test module | |
2326 | in libstub. */ | |
2327 | ||
23860348 | 2328 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2329 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2330 | changable. */ |
cce74817 JM |
2331 | |
2332 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2333 | Plan to fix this. */ |
cce74817 | 2334 | |
23860348 | 2335 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2336 | |
9d1f7ab2 | 2337 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2338 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2339 | |
2340 | struct gdb_ext_thread_info | |
c5aa993b | 2341 | { |
23860348 | 2342 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2343 | int active; /* Has state interesting to GDB? |
23860348 | 2344 | regs, stack. */ |
2bc416ba | 2345 | char display[256]; /* Brief state display, name, |
cedea757 | 2346 | blocked/suspended. */ |
23860348 | 2347 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2348 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2349 | whatever. */ |
c5aa993b | 2350 | }; |
cce74817 JM |
2351 | |
2352 | /* The volume of remote transfers can be limited by submitting | |
2353 | a mask containing bits specifying the desired information. | |
2354 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2355 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2356 | |
2357 | #define TAG_THREADID 1 | |
2358 | #define TAG_EXISTS 2 | |
2359 | #define TAG_DISPLAY 4 | |
2360 | #define TAG_THREADNAME 8 | |
c5aa993b | 2361 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2362 | |
23860348 | 2363 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2364 | |
a14ed312 | 2365 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2366 | |
a14ed312 | 2367 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2368 | |
a14ed312 | 2369 | static char *pack_int (char *buf, int value); |
cce74817 | 2370 | |
a14ed312 | 2371 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2372 | |
a14ed312 | 2373 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2374 | |
23860348 | 2375 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2376 | |
23860348 | 2377 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2378 | |
23860348 | 2379 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2380 | |
23860348 | 2381 | static int threadref_to_int (threadref *ref); |
cce74817 | 2382 | |
23860348 | 2383 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2384 | |
23860348 | 2385 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2386 | |
2bc416ba | 2387 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2388 | threadref *id); |
cce74817 | 2389 | |
a14ed312 | 2390 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2391 | threadref *expectedref, |
a14ed312 KB |
2392 | struct gdb_ext_thread_info |
2393 | *info); | |
cce74817 JM |
2394 | |
2395 | ||
2bc416ba | 2396 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2397 | int fieldset, /*TAG mask */ |
a14ed312 | 2398 | struct gdb_ext_thread_info *info); |
cce74817 | 2399 | |
a14ed312 KB |
2400 | static char *pack_threadlist_request (char *pkt, int startflag, |
2401 | int threadcount, | |
23860348 | 2402 | threadref *nextthread); |
cce74817 | 2403 | |
a14ed312 KB |
2404 | static int parse_threadlist_response (char *pkt, |
2405 | int result_limit, | |
23860348 | 2406 | threadref *original_echo, |
2bc416ba | 2407 | threadref *resultlist, |
23860348 | 2408 | int *doneflag); |
cce74817 | 2409 | |
a14ed312 | 2410 | static int remote_get_threadlist (int startflag, |
23860348 | 2411 | threadref *nextthread, |
a14ed312 KB |
2412 | int result_limit, |
2413 | int *done, | |
2bc416ba | 2414 | int *result_count, |
23860348 | 2415 | threadref *threadlist); |
cce74817 | 2416 | |
23860348 | 2417 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2418 | |
a14ed312 KB |
2419 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2420 | void *context, int looplimit); | |
cce74817 | 2421 | |
23860348 | 2422 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2423 | |
82f73884 PA |
2424 | |
2425 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2426 | buffer we're allowed to write to. Returns | |
2427 | BUF+CHARACTERS_WRITTEN. */ | |
2428 | ||
2429 | static char * | |
2430 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2431 | { | |
2432 | int pid, tid; | |
2433 | struct remote_state *rs = get_remote_state (); | |
2434 | ||
2435 | if (remote_multi_process_p (rs)) | |
2436 | { | |
2437 | pid = ptid_get_pid (ptid); | |
2438 | if (pid < 0) | |
2439 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2440 | else | |
2441 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2442 | } | |
ba348170 | 2443 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2444 | if (tid < 0) |
2445 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2446 | else | |
2447 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2448 | ||
2449 | return buf; | |
2450 | } | |
2451 | ||
2452 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2453 | passed the last parsed char. Returns null_ptid on error. */ | |
2454 | ||
2455 | static ptid_t | |
2456 | read_ptid (char *buf, char **obuf) | |
2457 | { | |
2458 | char *p = buf; | |
2459 | char *pp; | |
2460 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2461 | |
2462 | if (*p == 'p') | |
2463 | { | |
2464 | /* Multi-process ptid. */ | |
2465 | pp = unpack_varlen_hex (p + 1, &pid); | |
2466 | if (*pp != '.') | |
b37520b6 | 2467 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2468 | |
2469 | p = pp; | |
2470 | pp = unpack_varlen_hex (p + 1, &tid); | |
2471 | if (obuf) | |
2472 | *obuf = pp; | |
ba348170 | 2473 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2474 | } |
2475 | ||
2476 | /* No multi-process. Just a tid. */ | |
2477 | pp = unpack_varlen_hex (p, &tid); | |
2478 | ||
c9f35b34 KB |
2479 | /* Return null_ptid when no thread id is found. */ |
2480 | if (p == pp) | |
2481 | { | |
2482 | if (obuf) | |
2483 | *obuf = pp; | |
2484 | return null_ptid; | |
2485 | } | |
2486 | ||
82f73884 | 2487 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2488 | what's in inferior_ptid, unless it's null at this point. If so, |
2489 | then since there's no way to know the pid of the reported | |
2490 | threads, use the magic number. */ | |
2491 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2492 | pid = ptid_get_pid (magic_null_ptid); | |
2493 | else | |
2494 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2495 | |
2496 | if (obuf) | |
2497 | *obuf = pp; | |
ba348170 | 2498 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2499 | } |
2500 | ||
c906108c | 2501 | static int |
fba45db2 | 2502 | stubhex (int ch) |
c906108c SS |
2503 | { |
2504 | if (ch >= 'a' && ch <= 'f') | |
2505 | return ch - 'a' + 10; | |
2506 | if (ch >= '0' && ch <= '9') | |
2507 | return ch - '0'; | |
2508 | if (ch >= 'A' && ch <= 'F') | |
2509 | return ch - 'A' + 10; | |
2510 | return -1; | |
2511 | } | |
2512 | ||
2513 | static int | |
fba45db2 | 2514 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2515 | { |
2516 | int nibble; | |
2517 | int retval = 0; | |
2518 | ||
2519 | while (fieldlength) | |
2520 | { | |
2521 | nibble = stubhex (*buff++); | |
2522 | retval |= nibble; | |
2523 | fieldlength--; | |
2524 | if (fieldlength) | |
2525 | retval = retval << 4; | |
2526 | } | |
2527 | return retval; | |
2528 | } | |
2529 | ||
c906108c | 2530 | static char * |
fba45db2 | 2531 | unpack_nibble (char *buf, int *val) |
c906108c | 2532 | { |
b7589f7d | 2533 | *val = fromhex (*buf++); |
c906108c SS |
2534 | return buf; |
2535 | } | |
2536 | ||
c906108c | 2537 | static char * |
fba45db2 | 2538 | unpack_byte (char *buf, int *value) |
c906108c SS |
2539 | { |
2540 | *value = stub_unpack_int (buf, 2); | |
2541 | return buf + 2; | |
2542 | } | |
2543 | ||
2544 | static char * | |
fba45db2 | 2545 | pack_int (char *buf, int value) |
c906108c SS |
2546 | { |
2547 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2548 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2549 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2550 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2551 | return buf; | |
2552 | } | |
2553 | ||
2554 | static char * | |
fba45db2 | 2555 | unpack_int (char *buf, int *value) |
c906108c SS |
2556 | { |
2557 | *value = stub_unpack_int (buf, 8); | |
2558 | return buf + 8; | |
2559 | } | |
2560 | ||
23860348 | 2561 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2562 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2563 | |
2564 | static char * | |
fba45db2 | 2565 | pack_string (char *pkt, char *string) |
c906108c SS |
2566 | { |
2567 | char ch; | |
2568 | int len; | |
2569 | ||
2570 | len = strlen (string); | |
2571 | if (len > 200) | |
23860348 | 2572 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2573 | pkt = pack_hex_byte (pkt, len); |
2574 | while (len-- > 0) | |
2575 | { | |
2576 | ch = *string++; | |
2577 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2578 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2579 | *pkt++ = ch; |
2580 | } | |
2581 | return pkt; | |
2582 | } | |
2583 | #endif /* 0 (unused) */ | |
2584 | ||
2585 | static char * | |
fba45db2 | 2586 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2587 | { |
2588 | while (length--) | |
2589 | *dest++ = *src++; | |
2590 | *dest = '\0'; | |
2591 | return src; | |
2592 | } | |
2593 | ||
2594 | static char * | |
fba45db2 | 2595 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2596 | { |
2597 | char *limit; | |
2598 | unsigned char *altid; | |
2599 | ||
2600 | altid = (unsigned char *) id; | |
2601 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2602 | while (pkt < limit) | |
2603 | pkt = pack_hex_byte (pkt, *altid++); | |
2604 | return pkt; | |
2605 | } | |
2606 | ||
2607 | ||
2608 | static char * | |
fba45db2 | 2609 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2610 | { |
2611 | char *altref; | |
2612 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2613 | int x, y; | |
2614 | ||
2615 | altref = (char *) id; | |
2616 | ||
2617 | while (inbuf < limit) | |
2618 | { | |
2619 | x = stubhex (*inbuf++); | |
2620 | y = stubhex (*inbuf++); | |
2621 | *altref++ = (x << 4) | y; | |
2622 | } | |
2623 | return inbuf; | |
2624 | } | |
2625 | ||
2626 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2627 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2628 | to use 64bit thread references internally. This is an adapter |
2629 | function. */ | |
2630 | ||
2631 | void | |
fba45db2 | 2632 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2633 | { |
2634 | unsigned char *scan; | |
2635 | ||
2636 | scan = (unsigned char *) id; | |
2637 | { | |
2638 | int i = 4; | |
2639 | while (i--) | |
2640 | *scan++ = 0; | |
2641 | } | |
2642 | *scan++ = (value >> 24) & 0xff; | |
2643 | *scan++ = (value >> 16) & 0xff; | |
2644 | *scan++ = (value >> 8) & 0xff; | |
2645 | *scan++ = (value & 0xff); | |
2646 | } | |
2647 | ||
2648 | static int | |
fba45db2 | 2649 | threadref_to_int (threadref *ref) |
c906108c SS |
2650 | { |
2651 | int i, value = 0; | |
2652 | unsigned char *scan; | |
2653 | ||
cfd77fa1 | 2654 | scan = *ref; |
c906108c SS |
2655 | scan += 4; |
2656 | i = 4; | |
2657 | while (i-- > 0) | |
2658 | value = (value << 8) | ((*scan++) & 0xff); | |
2659 | return value; | |
2660 | } | |
2661 | ||
2662 | static void | |
fba45db2 | 2663 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2664 | { |
2665 | int i; | |
2666 | unsigned char *csrc, *cdest; | |
2667 | ||
2668 | csrc = (unsigned char *) src; | |
2669 | cdest = (unsigned char *) dest; | |
2670 | i = 8; | |
2671 | while (i--) | |
2672 | *cdest++ = *csrc++; | |
2673 | } | |
2674 | ||
2675 | static int | |
fba45db2 | 2676 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2677 | { |
23860348 | 2678 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2679 | #if 0 |
2680 | unsigned char *srcp, *destp; | |
2681 | int i, result; | |
2682 | srcp = (char *) src; | |
2683 | destp = (char *) dest; | |
2684 | ||
2685 | result = 1; | |
2686 | while (i-- > 0) | |
2687 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2688 | return result; | |
2689 | #endif | |
2690 | return 1; | |
2691 | } | |
2692 | ||
2693 | /* | |
c5aa993b JM |
2694 | threadid:1, # always request threadid |
2695 | context_exists:2, | |
2696 | display:4, | |
2697 | unique_name:8, | |
2698 | more_display:16 | |
2699 | */ | |
c906108c SS |
2700 | |
2701 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2702 | ||
2703 | static char * | |
fba45db2 | 2704 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2705 | { |
23860348 MS |
2706 | *pkt++ = 'q'; /* Info Query */ |
2707 | *pkt++ = 'P'; /* process or thread info */ | |
2708 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2709 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2710 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2711 | return pkt; |
2712 | } | |
2713 | ||
23860348 | 2714 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2715 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2716 | add more fields as time goes by. */ |
c906108c | 2717 | |
23860348 | 2718 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2719 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2720 | fetch registers and its stack? */ |
c5aa993b | 2721 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2722 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2723 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2724 | the process. */ |
c906108c SS |
2725 | |
2726 | static int | |
fba45db2 KB |
2727 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2728 | struct gdb_ext_thread_info *info) | |
c906108c | 2729 | { |
d01949b6 | 2730 | struct remote_state *rs = get_remote_state (); |
c906108c | 2731 | int mask, length; |
cfd77fa1 | 2732 | int tag; |
c906108c | 2733 | threadref ref; |
6d820c5c | 2734 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2735 | int retval = 1; |
2736 | ||
23860348 | 2737 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2738 | info->active = 0; |
2739 | info->display[0] = '\0'; | |
2740 | info->shortname[0] = '\0'; | |
2741 | info->more_display[0] = '\0'; | |
2742 | ||
23860348 MS |
2743 | /* Assume the characters indicating the packet type have been |
2744 | stripped. */ | |
c906108c SS |
2745 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2746 | pkt = unpack_threadid (pkt, &ref); | |
2747 | ||
2748 | if (mask == 0) | |
8a3fe4f8 | 2749 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2750 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2751 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2752 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2753 | return 0; |
2754 | } | |
2755 | copy_threadref (&info->threadid, &ref); | |
2756 | ||
23860348 | 2757 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2758 | |
23860348 MS |
2759 | /* Packets are terminated with nulls. */ |
2760 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2761 | { |
2762 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2763 | pkt = unpack_byte (pkt, &length); /* length */ |
2764 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2765 | { |
8a3fe4f8 | 2766 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2767 | retval = 0; |
2768 | break; | |
2769 | } | |
2770 | if (tag == TAG_THREADID) | |
2771 | { | |
2772 | if (length != 16) | |
2773 | { | |
8a3fe4f8 | 2774 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2775 | retval = 0; |
2776 | break; | |
2777 | } | |
2778 | pkt = unpack_threadid (pkt, &ref); | |
2779 | mask = mask & ~TAG_THREADID; | |
2780 | continue; | |
2781 | } | |
2782 | if (tag == TAG_EXISTS) | |
2783 | { | |
2784 | info->active = stub_unpack_int (pkt, length); | |
2785 | pkt += length; | |
2786 | mask = mask & ~(TAG_EXISTS); | |
2787 | if (length > 8) | |
2788 | { | |
8a3fe4f8 | 2789 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2790 | retval = 0; |
2791 | break; | |
2792 | } | |
2793 | continue; | |
2794 | } | |
2795 | if (tag == TAG_THREADNAME) | |
2796 | { | |
2797 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2798 | mask = mask & ~TAG_THREADNAME; | |
2799 | continue; | |
2800 | } | |
2801 | if (tag == TAG_DISPLAY) | |
2802 | { | |
2803 | pkt = unpack_string (pkt, &info->display[0], length); | |
2804 | mask = mask & ~TAG_DISPLAY; | |
2805 | continue; | |
2806 | } | |
2807 | if (tag == TAG_MOREDISPLAY) | |
2808 | { | |
2809 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2810 | mask = mask & ~TAG_MOREDISPLAY; | |
2811 | continue; | |
2812 | } | |
8a3fe4f8 | 2813 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2814 | break; /* Not a tag we know about. */ |
c906108c SS |
2815 | } |
2816 | return retval; | |
2817 | } | |
2818 | ||
2819 | static int | |
fba45db2 KB |
2820 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2821 | struct gdb_ext_thread_info *info) | |
c906108c | 2822 | { |
d01949b6 | 2823 | struct remote_state *rs = get_remote_state (); |
c906108c | 2824 | int result; |
c906108c | 2825 | |
2e9f7625 DJ |
2826 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2827 | putpkt (rs->buf); | |
6d820c5c | 2828 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2829 | |
2830 | if (rs->buf[0] == '\0') | |
2831 | return 0; | |
2832 | ||
2e9f7625 | 2833 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2834 | threadid, info); |
c906108c SS |
2835 | return result; |
2836 | } | |
2837 | ||
c906108c SS |
2838 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2839 | ||
2840 | static char * | |
fba45db2 KB |
2841 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2842 | threadref *nextthread) | |
c906108c SS |
2843 | { |
2844 | *pkt++ = 'q'; /* info query packet */ | |
2845 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2846 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2847 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2848 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2849 | *pkt = '\0'; | |
2850 | return pkt; | |
2851 | } | |
2852 | ||
2853 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2854 | ||
2855 | static int | |
fba45db2 KB |
2856 | parse_threadlist_response (char *pkt, int result_limit, |
2857 | threadref *original_echo, threadref *resultlist, | |
2858 | int *doneflag) | |
c906108c | 2859 | { |
d01949b6 | 2860 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2861 | char *limit; |
2862 | int count, resultcount, done; | |
2863 | ||
2864 | resultcount = 0; | |
2865 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2866 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2867 | /* done parse past here */ |
c906108c SS |
2868 | pkt = unpack_byte (pkt, &count); /* count field */ |
2869 | pkt = unpack_nibble (pkt, &done); | |
2870 | /* The first threadid is the argument threadid. */ | |
2871 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2872 | while ((count-- > 0) && (pkt < limit)) | |
2873 | { | |
2874 | pkt = unpack_threadid (pkt, resultlist++); | |
2875 | if (resultcount++ >= result_limit) | |
2876 | break; | |
2877 | } | |
2878 | if (doneflag) | |
2879 | *doneflag = done; | |
2880 | return resultcount; | |
2881 | } | |
2882 | ||
6dc54d91 PA |
2883 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2884 | qL packet is not supported, 0 on error and 1 on success. */ | |
2885 | ||
c906108c | 2886 | static int |
fba45db2 KB |
2887 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2888 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2889 | { |
d01949b6 | 2890 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2891 | int result = 1; |
2892 | ||
23860348 | 2893 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2894 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2895 | >= get_remote_packet_size ()) | |
ea9c271d | 2896 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2897 | |
6d820c5c DJ |
2898 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2899 | putpkt (rs->buf); | |
2900 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2901 | if (*rs->buf == '\0') |
6dc54d91 PA |
2902 | { |
2903 | /* Packet not supported. */ | |
2904 | return -1; | |
2905 | } | |
2906 | ||
2907 | *result_count = | |
2908 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2909 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2910 | |
0d031856 | 2911 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2912 | { |
23860348 MS |
2913 | /* FIXME: This is a good reason to drop the packet. */ |
2914 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2915 | /* Possabilities : |
2916 | retransmit immediatly - race conditions | |
2917 | retransmit after timeout - yes | |
2918 | exit | |
2919 | wait for packet, then exit | |
2920 | */ | |
8a3fe4f8 | 2921 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2922 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2923 | } |
2924 | if (*result_count <= 0) | |
2925 | { | |
2926 | if (*done != 1) | |
2927 | { | |
8a3fe4f8 | 2928 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2929 | result = 0; |
2930 | } | |
2931 | return result; /* break; */ | |
2932 | } | |
2933 | if (*result_count > result_limit) | |
2934 | { | |
2935 | *result_count = 0; | |
8a3fe4f8 | 2936 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2937 | return 0; |
2938 | } | |
2939 | return result; | |
2940 | } | |
2941 | ||
6dc54d91 PA |
2942 | /* Fetch the list of remote threads, with the qL packet, and call |
2943 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2944 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2945 | STEPFUNCTION returns false. If the packet is not supported, | |
2946 | returns -1. */ | |
c906108c | 2947 | |
c906108c | 2948 | static int |
fba45db2 KB |
2949 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2950 | int looplimit) | |
c906108c | 2951 | { |
0d031856 | 2952 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2953 | int done, i, result_count; |
2954 | int startflag = 1; | |
2955 | int result = 1; | |
2956 | int loopcount = 0; | |
c906108c SS |
2957 | |
2958 | done = 0; | |
2959 | while (!done) | |
2960 | { | |
2961 | if (loopcount++ > looplimit) | |
2962 | { | |
2963 | result = 0; | |
8a3fe4f8 | 2964 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2965 | break; |
2966 | } | |
6dc54d91 PA |
2967 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2968 | MAXTHREADLISTRESULTS, | |
2969 | &done, &result_count, | |
2970 | rs->resultthreadlist); | |
2971 | if (result <= 0) | |
2972 | break; | |
23860348 | 2973 | /* Clear for later iterations. */ |
c906108c SS |
2974 | startflag = 0; |
2975 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2976 | if (result_count >= 1) | |
0d031856 TT |
2977 | copy_threadref (&rs->nextthread, |
2978 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2979 | i = 0; |
2980 | while (result_count--) | |
6dc54d91 PA |
2981 | { |
2982 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2983 | { | |
2984 | result = 0; | |
2985 | break; | |
2986 | } | |
2987 | } | |
c906108c SS |
2988 | } |
2989 | return result; | |
2990 | } | |
2991 | ||
6dc54d91 PA |
2992 | /* A thread found on the remote target. */ |
2993 | ||
2994 | typedef struct thread_item | |
2995 | { | |
2996 | /* The thread's PTID. */ | |
2997 | ptid_t ptid; | |
2998 | ||
2999 | /* The thread's extra info. May be NULL. */ | |
3000 | char *extra; | |
3001 | ||
79efa585 SM |
3002 | /* The thread's name. May be NULL. */ |
3003 | char *name; | |
3004 | ||
6dc54d91 PA |
3005 | /* The core the thread was running on. -1 if not known. */ |
3006 | int core; | |
f6327dcb KB |
3007 | |
3008 | /* The thread handle associated with the thread. */ | |
3009 | gdb::byte_vector *thread_handle; | |
3010 | ||
6dc54d91 PA |
3011 | } thread_item_t; |
3012 | DEF_VEC_O(thread_item_t); | |
3013 | ||
3014 | /* Context passed around to the various methods listing remote | |
3015 | threads. As new threads are found, they're added to the ITEMS | |
3016 | vector. */ | |
3017 | ||
3018 | struct threads_listing_context | |
3019 | { | |
3020 | /* The threads found on the remote target. */ | |
3021 | VEC (thread_item_t) *items; | |
3022 | }; | |
3023 | ||
80134cf5 PA |
3024 | /* Discard the contents of the constructed thread listing context. */ |
3025 | ||
3026 | static void | |
3027 | clear_threads_listing_context (void *p) | |
3028 | { | |
19ba03f4 SM |
3029 | struct threads_listing_context *context |
3030 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
3031 | int i; |
3032 | struct thread_item *item; | |
3033 | ||
3034 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
79efa585 SM |
3035 | { |
3036 | xfree (item->extra); | |
3037 | xfree (item->name); | |
f6327dcb | 3038 | delete item->thread_handle; |
79efa585 | 3039 | } |
80134cf5 PA |
3040 | |
3041 | VEC_free (thread_item_t, context->items); | |
3042 | } | |
3043 | ||
cbb8991c DB |
3044 | /* Remove the thread specified as the related_pid field of WS |
3045 | from the CONTEXT list. */ | |
3046 | ||
3047 | static void | |
3048 | threads_listing_context_remove (struct target_waitstatus *ws, | |
3049 | struct threads_listing_context *context) | |
3050 | { | |
3051 | struct thread_item *item; | |
3052 | int i; | |
3053 | ptid_t child_ptid = ws->value.related_pid; | |
3054 | ||
3055 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
3056 | { | |
3057 | if (ptid_equal (item->ptid, child_ptid)) | |
3058 | { | |
3059 | VEC_ordered_remove (thread_item_t, context->items, i); | |
3060 | break; | |
3061 | } | |
3062 | } | |
3063 | } | |
3064 | ||
c906108c | 3065 | static int |
6dc54d91 | 3066 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3067 | { |
19ba03f4 SM |
3068 | struct threads_listing_context *context |
3069 | = (struct threads_listing_context *) data; | |
6dc54d91 | 3070 | struct thread_item item; |
79d7f229 | 3071 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 3072 | |
6dc54d91 PA |
3073 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
3074 | item.core = -1; | |
2e3b657e | 3075 | item.name = NULL; |
6dc54d91 | 3076 | item.extra = NULL; |
f6327dcb | 3077 | item.thread_handle = nullptr; |
6dc54d91 PA |
3078 | |
3079 | VEC_safe_push (thread_item_t, context->items, &item); | |
3080 | ||
c906108c SS |
3081 | return 1; /* continue iterator */ |
3082 | } | |
3083 | ||
3084 | #define CRAZY_MAX_THREADS 1000 | |
3085 | ||
39f77062 KB |
3086 | static ptid_t |
3087 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3088 | { |
d01949b6 | 3089 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3090 | |
3091 | putpkt ("qC"); | |
6d820c5c | 3092 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3093 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
3094 | { |
3095 | char *obuf; | |
3096 | ptid_t result; | |
3097 | ||
3098 | result = read_ptid (&rs->buf[2], &obuf); | |
3099 | if (*obuf != '\0' && remote_debug) | |
3100 | fprintf_unfiltered (gdb_stdlog, | |
3101 | "warning: garbage in qC reply\n"); | |
3102 | ||
3103 | return result; | |
3104 | } | |
c906108c SS |
3105 | else |
3106 | return oldpid; | |
3107 | } | |
3108 | ||
6dc54d91 | 3109 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3110 | |
6dc54d91 PA |
3111 | static int |
3112 | remote_get_threads_with_ql (struct target_ops *ops, | |
3113 | struct threads_listing_context *context) | |
c906108c | 3114 | { |
6dc54d91 PA |
3115 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3116 | CRAZY_MAX_THREADS) >= 0) | |
3117 | return 1; | |
3118 | ||
3119 | return 0; | |
c906108c SS |
3120 | } |
3121 | ||
dc146f7c VP |
3122 | #if defined(HAVE_LIBEXPAT) |
3123 | ||
dc146f7c VP |
3124 | static void |
3125 | start_thread (struct gdb_xml_parser *parser, | |
3126 | const struct gdb_xml_element *element, | |
3127 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
3128 | { | |
19ba03f4 SM |
3129 | struct threads_listing_context *data |
3130 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3131 | |
3132 | struct thread_item item; | |
3133 | char *id; | |
3d2c1d41 | 3134 | struct gdb_xml_value *attr; |
dc146f7c | 3135 | |
19ba03f4 | 3136 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
3137 | item.ptid = read_ptid (id, NULL); |
3138 | ||
3d2c1d41 PA |
3139 | attr = xml_find_attribute (attributes, "core"); |
3140 | if (attr != NULL) | |
3141 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
3142 | else |
3143 | item.core = -1; | |
3144 | ||
79efa585 | 3145 | attr = xml_find_attribute (attributes, "name"); |
e1961661 | 3146 | item.name = attr != NULL ? xstrdup ((const char *) attr->value) : NULL; |
79efa585 | 3147 | |
f6327dcb KB |
3148 | attr = xml_find_attribute (attributes, "handle"); |
3149 | if (attr != NULL) | |
3150 | { | |
3151 | item.thread_handle = new gdb::byte_vector | |
3152 | (strlen ((const char *) attr->value) / 2); | |
3153 | hex2bin ((const char *) attr->value, item.thread_handle->data (), | |
3154 | item.thread_handle->size ()); | |
3155 | } | |
3156 | else | |
3157 | item.thread_handle = nullptr; | |
3158 | ||
dc146f7c VP |
3159 | item.extra = 0; |
3160 | ||
3161 | VEC_safe_push (thread_item_t, data->items, &item); | |
3162 | } | |
3163 | ||
3164 | static void | |
3165 | end_thread (struct gdb_xml_parser *parser, | |
3166 | const struct gdb_xml_element *element, | |
3167 | void *user_data, const char *body_text) | |
3168 | { | |
19ba03f4 SM |
3169 | struct threads_listing_context *data |
3170 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3171 | |
3172 | if (body_text && *body_text) | |
2ae2a0b7 | 3173 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
3174 | } |
3175 | ||
3176 | const struct gdb_xml_attribute thread_attributes[] = { | |
3177 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3178 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3179 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3180 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3181 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3182 | }; | |
3183 | ||
3184 | const struct gdb_xml_element thread_children[] = { | |
3185 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3186 | }; | |
3187 | ||
3188 | const struct gdb_xml_element threads_children[] = { | |
3189 | { "thread", thread_attributes, thread_children, | |
3190 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3191 | start_thread, end_thread }, | |
3192 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3193 | }; | |
3194 | ||
3195 | const struct gdb_xml_element threads_elements[] = { | |
3196 | { "threads", NULL, threads_children, | |
3197 | GDB_XML_EF_NONE, NULL, NULL }, | |
3198 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3199 | }; | |
3200 | ||
3201 | #endif | |
3202 | ||
6dc54d91 | 3203 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3204 | |
6dc54d91 PA |
3205 | static int |
3206 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3207 | struct threads_listing_context *context) | |
0f71a2f6 | 3208 | { |
dc146f7c | 3209 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3210 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3211 | { |
6dc54d91 | 3212 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 3213 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 3214 | |
6dc54d91 | 3215 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3216 | { |
6dc54d91 PA |
3217 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
3218 | threads_elements, xml, context); | |
dc146f7c VP |
3219 | } |
3220 | ||
3221 | do_cleanups (back_to); | |
6dc54d91 | 3222 | return 1; |
dc146f7c VP |
3223 | } |
3224 | #endif | |
3225 | ||
6dc54d91 PA |
3226 | return 0; |
3227 | } | |
3228 | ||
3229 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3230 | ||
3231 | static int | |
3232 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3233 | struct threads_listing_context *context) | |
3234 | { | |
3235 | struct remote_state *rs = get_remote_state (); | |
3236 | ||
b80fafe3 | 3237 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3238 | { |
6dc54d91 PA |
3239 | char *bufp; |
3240 | ||
9d1f7ab2 | 3241 | putpkt ("qfThreadInfo"); |
6d820c5c | 3242 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3243 | bufp = rs->buf; |
9d1f7ab2 | 3244 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3245 | { |
9d1f7ab2 MS |
3246 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3247 | { | |
3248 | do | |
3249 | { | |
6dc54d91 PA |
3250 | struct thread_item item; |
3251 | ||
3252 | item.ptid = read_ptid (bufp, &bufp); | |
3253 | item.core = -1; | |
2e3b657e | 3254 | item.name = NULL; |
6dc54d91 | 3255 | item.extra = NULL; |
f6327dcb | 3256 | item.thread_handle = nullptr; |
6dc54d91 PA |
3257 | |
3258 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3259 | } |
3260 | while (*bufp++ == ','); /* comma-separated list */ | |
3261 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3262 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3263 | bufp = rs->buf; |
9d1f7ab2 | 3264 | } |
6dc54d91 PA |
3265 | return 1; |
3266 | } | |
3267 | else | |
3268 | { | |
3269 | /* Packet not recognized. */ | |
3270 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3271 | } |
3272 | } | |
3273 | ||
6dc54d91 PA |
3274 | return 0; |
3275 | } | |
3276 | ||
e8032dde | 3277 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3278 | targets. */ |
3279 | ||
3280 | static void | |
e8032dde | 3281 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 | 3282 | { |
6dc54d91 PA |
3283 | struct threads_listing_context context; |
3284 | struct cleanup *old_chain; | |
ab970af1 | 3285 | int got_list = 0; |
e8032dde | 3286 | |
6dc54d91 PA |
3287 | context.items = NULL; |
3288 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3289 | ||
3290 | /* We have a few different mechanisms to fetch the thread list. Try | |
3291 | them all, starting with the most preferred one first, falling | |
3292 | back to older methods. */ | |
3293 | if (remote_get_threads_with_qxfer (ops, &context) | |
3294 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3295 | || remote_get_threads_with_ql (ops, &context)) | |
3296 | { | |
3297 | int i; | |
3298 | struct thread_item *item; | |
ab970af1 PA |
3299 | struct thread_info *tp, *tmp; |
3300 | ||
3301 | got_list = 1; | |
3302 | ||
7d1a114c PA |
3303 | if (VEC_empty (thread_item_t, context.items) |
3304 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3305 | { | |
3306 | /* Some targets don't really support threads, but still | |
3307 | reply an (empty) thread list in response to the thread | |
3308 | listing packets, instead of replying "packet not | |
3309 | supported". Exit early so we don't delete the main | |
3310 | thread. */ | |
3311 | do_cleanups (old_chain); | |
3312 | return; | |
3313 | } | |
3314 | ||
ab970af1 PA |
3315 | /* CONTEXT now holds the current thread list on the remote |
3316 | target end. Delete GDB-side threads no longer found on the | |
3317 | target. */ | |
8a06aea7 | 3318 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3319 | { |
ab970af1 PA |
3320 | for (i = 0; |
3321 | VEC_iterate (thread_item_t, context.items, i, item); | |
3322 | ++i) | |
3323 | { | |
3324 | if (ptid_equal (item->ptid, tp->ptid)) | |
3325 | break; | |
3326 | } | |
3327 | ||
3328 | if (i == VEC_length (thread_item_t, context.items)) | |
3329 | { | |
3330 | /* Not found. */ | |
3331 | delete_thread (tp->ptid); | |
3332 | } | |
cbb8991c DB |
3333 | } |
3334 | ||
3335 | /* Remove any unreported fork child threads from CONTEXT so | |
3336 | that we don't interfere with follow fork, which is where | |
3337 | creation of such threads is handled. */ | |
3338 | remove_new_fork_children (&context); | |
74531fed | 3339 | |
ab970af1 | 3340 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3341 | for (i = 0; |
3342 | VEC_iterate (thread_item_t, context.items, i, item); | |
3343 | ++i) | |
3344 | { | |
3345 | if (!ptid_equal (item->ptid, null_ptid)) | |
3346 | { | |
3347 | struct private_thread_info *info; | |
3348 | /* In non-stop mode, we assume new found threads are | |
0d5b594f PA |
3349 | executing until proven otherwise with a stop reply. |
3350 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3351 | stopped. */ |
0d5b594f | 3352 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3353 | |
0d5b594f | 3354 | remote_notice_new_inferior (item->ptid, executing); |
6dc54d91 | 3355 | |
85ad3aaf | 3356 | info = get_private_info_ptid (item->ptid); |
6dc54d91 PA |
3357 | info->core = item->core; |
3358 | info->extra = item->extra; | |
3359 | item->extra = NULL; | |
79efa585 SM |
3360 | info->name = item->name; |
3361 | item->name = NULL; | |
f6327dcb KB |
3362 | info->thread_handle = item->thread_handle; |
3363 | item->thread_handle = nullptr; | |
6dc54d91 PA |
3364 | } |
3365 | } | |
3366 | } | |
3367 | ||
ab970af1 PA |
3368 | if (!got_list) |
3369 | { | |
3370 | /* If no thread listing method is supported, then query whether | |
3371 | each known thread is alive, one by one, with the T packet. | |
3372 | If the target doesn't support threads at all, then this is a | |
3373 | no-op. See remote_thread_alive. */ | |
3374 | prune_threads (); | |
3375 | } | |
3376 | ||
6dc54d91 | 3377 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3378 | } |
3379 | ||
802188a7 | 3380 | /* |
9d1f7ab2 MS |
3381 | * Collect a descriptive string about the given thread. |
3382 | * The target may say anything it wants to about the thread | |
3383 | * (typically info about its blocked / runnable state, name, etc.). | |
3384 | * This string will appear in the info threads display. | |
802188a7 | 3385 | * |
9d1f7ab2 MS |
3386 | * Optional: targets are not required to implement this function. |
3387 | */ | |
3388 | ||
7a114964 | 3389 | static const char * |
c15906d8 | 3390 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3391 | { |
d01949b6 | 3392 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3393 | int result; |
3394 | int set; | |
3395 | threadref id; | |
3396 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3397 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3398 | int n = 0; /* position in display_buf */ |
3399 | ||
5d93a237 | 3400 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3401 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3402 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3403 | |
60e569b9 | 3404 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3405 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3406 | /* This is the main thread which was added by GDB. The remote |
3407 | server doesn't know about it. */ | |
3408 | return NULL; | |
3409 | ||
4082afcc | 3410 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3411 | { |
3412 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3413 | |
fe978cb0 PA |
3414 | if (info && info->priv) |
3415 | return info->priv->extra; | |
dc146f7c VP |
3416 | else |
3417 | return NULL; | |
3418 | } | |
3419 | ||
b80fafe3 | 3420 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3421 | { |
82f73884 PA |
3422 | char *b = rs->buf; |
3423 | char *endb = rs->buf + get_remote_packet_size (); | |
3424 | ||
3425 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3426 | b += strlen (b); | |
3427 | write_ptid (b, endb, tp->ptid); | |
3428 | ||
2e9f7625 | 3429 | putpkt (rs->buf); |
6d820c5c | 3430 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3431 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3432 | { |
325fac50 | 3433 | n = std::min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2e9f7625 | 3434 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); |
30559e10 | 3435 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3436 | return display_buf; |
3437 | } | |
0f71a2f6 | 3438 | } |
9d1f7ab2 MS |
3439 | |
3440 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3441 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3442 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3443 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3444 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3445 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3446 | if (threadinfo.active) | |
0f71a2f6 | 3447 | { |
9d1f7ab2 | 3448 | if (*threadinfo.shortname) |
2bc416ba | 3449 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3450 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3451 | if (*threadinfo.display) |
2bc416ba | 3452 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3453 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3454 | if (*threadinfo.more_display) |
2bc416ba | 3455 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3456 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3457 | |
3458 | if (n > 0) | |
c5aa993b | 3459 | { |
23860348 | 3460 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3461 | if (',' == display_buf[n-1]) |
3462 | display_buf[n-1] = ' '; | |
3463 | return display_buf; | |
c5aa993b | 3464 | } |
0f71a2f6 | 3465 | } |
9d1f7ab2 | 3466 | return NULL; |
0f71a2f6 | 3467 | } |
c906108c | 3468 | \f |
c5aa993b | 3469 | |
0fb4aa4b | 3470 | static int |
61fc905d | 3471 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3472 | struct static_tracepoint_marker *marker) |
3473 | { | |
3474 | struct remote_state *rs = get_remote_state (); | |
3475 | char *p = rs->buf; | |
3476 | ||
bba74b36 | 3477 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3478 | p += strlen (p); |
3479 | p += hexnumstr (p, addr); | |
3480 | putpkt (rs->buf); | |
3481 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3482 | p = rs->buf; | |
3483 | ||
3484 | if (*p == 'E') | |
3485 | error (_("Remote failure reply: %s"), p); | |
3486 | ||
3487 | if (*p++ == 'm') | |
3488 | { | |
3489 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3490 | return 1; | |
3491 | } | |
3492 | ||
3493 | return 0; | |
3494 | } | |
3495 | ||
0fb4aa4b | 3496 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3497 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3498 | const char *strid) | |
0fb4aa4b PA |
3499 | { |
3500 | struct remote_state *rs = get_remote_state (); | |
3501 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3502 | struct static_tracepoint_marker *marker = NULL; | |
3503 | struct cleanup *old_chain; | |
3504 | char *p; | |
3505 | ||
3506 | /* Ask for a first packet of static tracepoint marker | |
3507 | definition. */ | |
3508 | putpkt ("qTfSTM"); | |
3509 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3510 | p = rs->buf; | |
3511 | if (*p == 'E') | |
3512 | error (_("Remote failure reply: %s"), p); | |
3513 | ||
3514 | old_chain = make_cleanup (free_current_marker, &marker); | |
3515 | ||
3516 | while (*p++ == 'm') | |
3517 | { | |
3518 | if (marker == NULL) | |
3519 | marker = XCNEW (struct static_tracepoint_marker); | |
3520 | ||
3521 | do | |
3522 | { | |
3523 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3524 | ||
3525 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3526 | { | |
3527 | VEC_safe_push (static_tracepoint_marker_p, | |
3528 | markers, marker); | |
3529 | marker = NULL; | |
3530 | } | |
3531 | else | |
3532 | { | |
3533 | release_static_tracepoint_marker (marker); | |
3534 | memset (marker, 0, sizeof (*marker)); | |
3535 | } | |
3536 | } | |
3537 | while (*p++ == ','); /* comma-separated list */ | |
3538 | /* Ask for another packet of static tracepoint definition. */ | |
3539 | putpkt ("qTsSTM"); | |
3540 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3541 | p = rs->buf; | |
3542 | } | |
3543 | ||
3544 | do_cleanups (old_chain); | |
3545 | return markers; | |
3546 | } | |
3547 | ||
3548 | \f | |
10760264 JB |
3549 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3550 | ||
3551 | static ptid_t | |
1e6b91a4 | 3552 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3553 | { |
ba348170 | 3554 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3555 | } |
3556 | \f | |
3557 | ||
24b06219 | 3558 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3559 | |
3560 | static void | |
fba45db2 | 3561 | extended_remote_restart (void) |
c906108c | 3562 | { |
d01949b6 | 3563 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3564 | |
3565 | /* Send the restart command; for reasons I don't understand the | |
3566 | remote side really expects a number after the "R". */ | |
ea9c271d | 3567 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3568 | putpkt (rs->buf); |
c906108c | 3569 | |
ad9a8f3f | 3570 | remote_fileio_reset (); |
c906108c SS |
3571 | } |
3572 | \f | |
3573 | /* Clean up connection to a remote debugger. */ | |
3574 | ||
c906108c | 3575 | static void |
de90e03d | 3576 | remote_close (struct target_ops *self) |
c906108c | 3577 | { |
5d93a237 TT |
3578 | struct remote_state *rs = get_remote_state (); |
3579 | ||
3580 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3581 | return; /* already closed */ |
3582 | ||
048094ac | 3583 | /* Make sure we leave stdin registered in the event loop. */ |
e3594fd1 | 3584 | remote_terminal_ours (self); |
ce5ce7ed | 3585 | |
5d93a237 TT |
3586 | serial_close (rs->remote_desc); |
3587 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3588 | |
3589 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3590 | of all the inferiors and their threads we were controlling. |
3591 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3592 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3593 | inferior_ptid = null_ptid; |
f67fd822 | 3594 | discard_all_inferiors (); |
ce5ce7ed | 3595 | |
f48ff2a7 YQ |
3596 | /* We are closing the remote target, so we should discard |
3597 | everything of this target. */ | |
bcc75809 | 3598 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3599 | |
3600 | if (remote_async_inferior_event_token) | |
3601 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3602 | |
5965e028 | 3603 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3604 | |
3605 | trace_reset_local_state (); | |
c906108c SS |
3606 | } |
3607 | ||
23860348 | 3608 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3609 | |
3610 | static void | |
fba45db2 | 3611 | get_offsets (void) |
c906108c | 3612 | { |
d01949b6 | 3613 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3614 | char *buf; |
085dd6e6 | 3615 | char *ptr; |
31d99776 DJ |
3616 | int lose, num_segments = 0, do_sections, do_segments; |
3617 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3618 | struct section_offsets *offs; |
31d99776 DJ |
3619 | struct symfile_segment_data *data; |
3620 | ||
3621 | if (symfile_objfile == NULL) | |
3622 | return; | |
c906108c SS |
3623 | |
3624 | putpkt ("qOffsets"); | |
6d820c5c | 3625 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3626 | buf = rs->buf; |
c906108c SS |
3627 | |
3628 | if (buf[0] == '\000') | |
3629 | return; /* Return silently. Stub doesn't support | |
23860348 | 3630 | this command. */ |
c906108c SS |
3631 | if (buf[0] == 'E') |
3632 | { | |
8a3fe4f8 | 3633 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3634 | return; |
3635 | } | |
3636 | ||
3637 | /* Pick up each field in turn. This used to be done with scanf, but | |
3638 | scanf will make trouble if CORE_ADDR size doesn't match | |
3639 | conversion directives correctly. The following code will work | |
3640 | with any size of CORE_ADDR. */ | |
3641 | text_addr = data_addr = bss_addr = 0; | |
3642 | ptr = buf; | |
3643 | lose = 0; | |
3644 | ||
61012eef | 3645 | if (startswith (ptr, "Text=")) |
c906108c SS |
3646 | { |
3647 | ptr += 5; | |
3648 | /* Don't use strtol, could lose on big values. */ | |
3649 | while (*ptr && *ptr != ';') | |
3650 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3651 | |
61012eef | 3652 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3653 | { |
3654 | ptr += 6; | |
3655 | while (*ptr && *ptr != ';') | |
3656 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3657 | } | |
3658 | else | |
3659 | lose = 1; | |
3660 | ||
61012eef | 3661 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3662 | { |
3663 | ptr += 5; | |
3664 | while (*ptr && *ptr != ';') | |
3665 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3666 | |
31d99776 DJ |
3667 | if (bss_addr != data_addr) |
3668 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3669 | } | |
3670 | else | |
3671 | lose = 1; | |
3672 | } | |
61012eef | 3673 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3674 | { |
31d99776 DJ |
3675 | ptr += 8; |
3676 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3677 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3678 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3679 | num_segments = 1; | |
3680 | ||
61012eef | 3681 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3682 | { |
3683 | ptr += 9; | |
3684 | while (*ptr && *ptr != ';') | |
3685 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3686 | num_segments++; | |
3687 | } | |
c906108c SS |
3688 | } |
3689 | else | |
3690 | lose = 1; | |
3691 | ||
3692 | if (lose) | |
8a3fe4f8 | 3693 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3694 | else if (*ptr != '\0') |
3695 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3696 | |
802188a7 | 3697 | offs = ((struct section_offsets *) |
a39a16c4 | 3698 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3699 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3700 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3701 | |
31d99776 DJ |
3702 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3703 | do_segments = (data != NULL); | |
3704 | do_sections = num_segments == 0; | |
c906108c | 3705 | |
28c32713 | 3706 | if (num_segments > 0) |
31d99776 | 3707 | { |
31d99776 DJ |
3708 | segments[0] = text_addr; |
3709 | segments[1] = data_addr; | |
3710 | } | |
28c32713 JB |
3711 | /* If we have two segments, we can still try to relocate everything |
3712 | by assuming that the .text and .data offsets apply to the whole | |
3713 | text and data segments. Convert the offsets given in the packet | |
3714 | to base addresses for symfile_map_offsets_to_segments. */ | |
3715 | else if (data && data->num_segments == 2) | |
3716 | { | |
3717 | segments[0] = data->segment_bases[0] + text_addr; | |
3718 | segments[1] = data->segment_bases[1] + data_addr; | |
3719 | num_segments = 2; | |
3720 | } | |
8d385431 DJ |
3721 | /* If the object file has only one segment, assume that it is text |
3722 | rather than data; main programs with no writable data are rare, | |
3723 | but programs with no code are useless. Of course the code might | |
3724 | have ended up in the data segment... to detect that we would need | |
3725 | the permissions here. */ | |
3726 | else if (data && data->num_segments == 1) | |
3727 | { | |
3728 | segments[0] = data->segment_bases[0] + text_addr; | |
3729 | num_segments = 1; | |
3730 | } | |
28c32713 JB |
3731 | /* There's no way to relocate by segment. */ |
3732 | else | |
3733 | do_segments = 0; | |
31d99776 DJ |
3734 | |
3735 | if (do_segments) | |
3736 | { | |
3737 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3738 | offs, num_segments, segments); | |
3739 | ||
3740 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3741 | error (_("Can not handle qOffsets TextSeg " |
3742 | "response with this symbol file")); | |
31d99776 DJ |
3743 | |
3744 | if (ret > 0) | |
3745 | do_sections = 0; | |
3746 | } | |
c906108c | 3747 | |
9ef895d6 DJ |
3748 | if (data) |
3749 | free_symfile_segment_data (data); | |
31d99776 DJ |
3750 | |
3751 | if (do_sections) | |
3752 | { | |
3753 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3754 | ||
3e43a32a MS |
3755 | /* This is a temporary kludge to force data and bss to use the |
3756 | same offsets because that's what nlmconv does now. The real | |
3757 | solution requires changes to the stub and remote.c that I | |
3758 | don't have time to do right now. */ | |
31d99776 DJ |
3759 | |
3760 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3761 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3762 | } | |
c906108c SS |
3763 | |
3764 | objfile_relocate (symfile_objfile, offs); | |
3765 | } | |
3766 | ||
9a7071a8 JB |
3767 | /* Send interrupt_sequence to remote target. */ |
3768 | static void | |
eeae04df | 3769 | send_interrupt_sequence (void) |
9a7071a8 | 3770 | { |
5d93a237 TT |
3771 | struct remote_state *rs = get_remote_state (); |
3772 | ||
9a7071a8 | 3773 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3774 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3775 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3776 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3777 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3778 | { | |
5d93a237 | 3779 | serial_send_break (rs->remote_desc); |
c33e31fd | 3780 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3781 | } |
3782 | else | |
3783 | internal_error (__FILE__, __LINE__, | |
3784 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3785 | interrupt_sequence_mode); | |
3786 | } | |
3787 | ||
3405876a PA |
3788 | |
3789 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3790 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3791 | ||
3792 | static ptid_t | |
3793 | stop_reply_extract_thread (char *stop_reply) | |
3794 | { | |
3795 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3796 | { | |
3797 | char *p; | |
3798 | ||
3799 | /* Txx r:val ; r:val (...) */ | |
3800 | p = &stop_reply[3]; | |
3801 | ||
3802 | /* Look for "register" named "thread". */ | |
3803 | while (*p != '\0') | |
3804 | { | |
3805 | char *p1; | |
3806 | ||
3807 | p1 = strchr (p, ':'); | |
3808 | if (p1 == NULL) | |
3809 | return null_ptid; | |
3810 | ||
3811 | if (strncmp (p, "thread", p1 - p) == 0) | |
3812 | return read_ptid (++p1, &p); | |
3813 | ||
3814 | p1 = strchr (p, ';'); | |
3815 | if (p1 == NULL) | |
3816 | return null_ptid; | |
3817 | p1++; | |
3818 | ||
3819 | p = p1; | |
3820 | } | |
3821 | } | |
3822 | ||
3823 | return null_ptid; | |
3824 | } | |
3825 | ||
b7ea362b PA |
3826 | /* Determine the remote side's current thread. If we have a stop |
3827 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3828 | "thread" register we can extract the current thread from. If not, | |
3829 | ask the remote which is the current thread with qC. The former | |
3830 | method avoids a roundtrip. */ | |
3831 | ||
3832 | static ptid_t | |
3833 | get_current_thread (char *wait_status) | |
3834 | { | |
6a49a997 | 3835 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3836 | |
3837 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3838 | the target architecture, which we haven't yet fully determined at | |
3839 | this point. */ | |
3840 | if (wait_status != NULL) | |
3841 | ptid = stop_reply_extract_thread (wait_status); | |
3842 | if (ptid_equal (ptid, null_ptid)) | |
3843 | ptid = remote_current_thread (inferior_ptid); | |
3844 | ||
3845 | return ptid; | |
3846 | } | |
3847 | ||
49c62f2e PA |
3848 | /* Query the remote target for which is the current thread/process, |
3849 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3850 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3851 | to return the current thread. |
3852 | ||
3853 | This function is called after handling the '?' or 'vRun' packets, | |
3854 | whose response is a stop reply from which we can also try | |
3855 | extracting the thread. If the target doesn't support the explicit | |
3856 | qC query, we infer the current thread from that stop reply, passed | |
3857 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3858 | |
3859 | static void | |
3405876a | 3860 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3861 | { |
3862 | struct remote_state *rs = get_remote_state (); | |
3863 | int fake_pid_p = 0; | |
49c62f2e PA |
3864 | |
3865 | inferior_ptid = null_ptid; | |
3866 | ||
b7ea362b | 3867 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 3868 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 3869 | |
87215ad1 | 3870 | if (curr_ptid != null_ptid) |
49c62f2e PA |
3871 | { |
3872 | if (!remote_multi_process_p (rs)) | |
3873 | fake_pid_p = 1; | |
49c62f2e PA |
3874 | } |
3875 | else | |
3876 | { | |
3877 | /* Without this, some commands which require an active target | |
3878 | (such as kill) won't work. This variable serves (at least) | |
3879 | double duty as both the pid of the target process (if it has | |
3880 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 3881 | curr_ptid = magic_null_ptid; |
49c62f2e PA |
3882 | fake_pid_p = 1; |
3883 | } | |
3884 | ||
87215ad1 | 3885 | remote_add_inferior (fake_pid_p, ptid_get_pid (curr_ptid), -1, 1); |
49c62f2e | 3886 | |
87215ad1 SDJ |
3887 | /* Add the main thread and switch to it. Don't try reading |
3888 | registers yet, since we haven't fetched the target description | |
3889 | yet. */ | |
3890 | thread_info *tp = add_thread_silent (curr_ptid); | |
3891 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
3892 | } |
3893 | ||
6efcd9a8 PA |
3894 | /* Print info about a thread that was found already stopped on |
3895 | connection. */ | |
3896 | ||
3897 | static void | |
3898 | print_one_stopped_thread (struct thread_info *thread) | |
3899 | { | |
3900 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3901 | ||
3902 | switch_to_thread (thread->ptid); | |
3903 | stop_pc = get_frame_pc (get_current_frame ()); | |
3904 | set_current_sal_from_frame (get_current_frame ()); | |
3905 | ||
3906 | thread->suspend.waitstatus_pending_p = 0; | |
3907 | ||
3908 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3909 | { | |
3910 | enum gdb_signal sig = ws->value.sig; | |
3911 | ||
3912 | if (signal_print_state (sig)) | |
3913 | observer_notify_signal_received (sig); | |
3914 | } | |
3915 | observer_notify_normal_stop (NULL, 1); | |
3916 | } | |
3917 | ||
221e1a37 PA |
3918 | /* Process all initial stop replies the remote side sent in response |
3919 | to the ? packet. These indicate threads that were already stopped | |
3920 | on initial connection. We mark these threads as stopped and print | |
3921 | their current frame before giving the user the prompt. */ | |
3922 | ||
3923 | static void | |
6efcd9a8 | 3924 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3925 | { |
3926 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3927 | struct inferior *inf; |
3928 | struct thread_info *thread; | |
3929 | struct thread_info *selected = NULL; | |
3930 | struct thread_info *lowest_stopped = NULL; | |
3931 | struct thread_info *first = NULL; | |
221e1a37 PA |
3932 | |
3933 | /* Consume the initial pending events. */ | |
3934 | while (pending_stop_replies-- > 0) | |
3935 | { | |
3936 | ptid_t waiton_ptid = minus_one_ptid; | |
3937 | ptid_t event_ptid; | |
3938 | struct target_waitstatus ws; | |
3939 | int ignore_event = 0; | |
6efcd9a8 | 3940 | struct thread_info *thread; |
221e1a37 PA |
3941 | |
3942 | memset (&ws, 0, sizeof (ws)); | |
3943 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3944 | if (remote_debug) | |
3945 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3946 | ||
3947 | switch (ws.kind) | |
3948 | { | |
3949 | case TARGET_WAITKIND_IGNORE: | |
3950 | case TARGET_WAITKIND_NO_RESUMED: | |
3951 | case TARGET_WAITKIND_SIGNALLED: | |
3952 | case TARGET_WAITKIND_EXITED: | |
3953 | /* We shouldn't see these, but if we do, just ignore. */ | |
3954 | if (remote_debug) | |
3955 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3956 | ignore_event = 1; | |
3957 | break; | |
3958 | ||
3959 | case TARGET_WAITKIND_EXECD: | |
3960 | xfree (ws.value.execd_pathname); | |
3961 | break; | |
3962 | default: | |
3963 | break; | |
3964 | } | |
3965 | ||
3966 | if (ignore_event) | |
3967 | continue; | |
3968 | ||
6efcd9a8 | 3969 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3970 | |
3971 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3972 | { | |
3973 | enum gdb_signal sig = ws.value.sig; | |
3974 | ||
3975 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3976 | instead of signal 0. Suppress it. */ | |
3977 | if (sig == GDB_SIGNAL_TRAP) | |
3978 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3979 | thread->suspend.stop_signal = sig; |
3980 | ws.value.sig = sig; | |
3981 | } | |
221e1a37 | 3982 | |
6efcd9a8 PA |
3983 | thread->suspend.waitstatus = ws; |
3984 | ||
3985 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3986 | || ws.value.sig != GDB_SIGNAL_0) | |
3987 | thread->suspend.waitstatus_pending_p = 1; | |
3988 | ||
3989 | set_executing (event_ptid, 0); | |
3990 | set_running (event_ptid, 0); | |
85ad3aaf | 3991 | thread->priv->vcont_resumed = 0; |
6efcd9a8 PA |
3992 | } |
3993 | ||
3994 | /* "Notice" the new inferiors before anything related to | |
3995 | registers/memory. */ | |
3996 | ALL_INFERIORS (inf) | |
3997 | { | |
3998 | if (inf->pid == 0) | |
3999 | continue; | |
4000 | ||
4001 | inf->needs_setup = 1; | |
4002 | ||
4003 | if (non_stop) | |
4004 | { | |
4005 | thread = any_live_thread_of_process (inf->pid); | |
4006 | notice_new_inferior (thread->ptid, | |
4007 | thread->state == THREAD_RUNNING, | |
4008 | from_tty); | |
4009 | } | |
4010 | } | |
4011 | ||
4012 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4013 | records the threads' stop pc, so must be done after "noticing" | |
4014 | the inferiors. */ | |
4015 | if (!non_stop) | |
4016 | { | |
4017 | stop_all_threads (); | |
4018 | ||
4019 | /* If all threads of an inferior were already stopped, we | |
4020 | haven't setup the inferior yet. */ | |
4021 | ALL_INFERIORS (inf) | |
4022 | { | |
4023 | if (inf->pid == 0) | |
4024 | continue; | |
221e1a37 | 4025 | |
6efcd9a8 PA |
4026 | if (inf->needs_setup) |
4027 | { | |
4028 | thread = any_live_thread_of_process (inf->pid); | |
4029 | switch_to_thread_no_regs (thread); | |
4030 | setup_inferior (0); | |
4031 | } | |
4032 | } | |
221e1a37 | 4033 | } |
6efcd9a8 PA |
4034 | |
4035 | /* Now go over all threads that are stopped, and print their current | |
4036 | frame. If all-stop, then if there's a signalled thread, pick | |
4037 | that as current. */ | |
4038 | ALL_NON_EXITED_THREADS (thread) | |
4039 | { | |
6efcd9a8 PA |
4040 | if (first == NULL) |
4041 | first = thread; | |
4042 | ||
4043 | if (!non_stop) | |
4044 | set_running (thread->ptid, 0); | |
4045 | else if (thread->state != THREAD_STOPPED) | |
4046 | continue; | |
4047 | ||
6efcd9a8 PA |
4048 | if (selected == NULL |
4049 | && thread->suspend.waitstatus_pending_p) | |
4050 | selected = thread; | |
4051 | ||
5d5658a1 PA |
4052 | if (lowest_stopped == NULL |
4053 | || thread->inf->num < lowest_stopped->inf->num | |
4054 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4055 | lowest_stopped = thread; |
4056 | ||
4057 | if (non_stop) | |
4058 | print_one_stopped_thread (thread); | |
4059 | } | |
4060 | ||
4061 | /* In all-stop, we only print the status of one thread, and leave | |
4062 | others with their status pending. */ | |
4063 | if (!non_stop) | |
4064 | { | |
4065 | thread = selected; | |
4066 | if (thread == NULL) | |
4067 | thread = lowest_stopped; | |
4068 | if (thread == NULL) | |
4069 | thread = first; | |
4070 | ||
4071 | print_one_stopped_thread (thread); | |
4072 | } | |
4073 | ||
4074 | /* For "info program". */ | |
4075 | thread = inferior_thread (); | |
4076 | if (thread->state == THREAD_STOPPED) | |
4077 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4078 | } |
4079 | ||
048094ac PA |
4080 | /* Start the remote connection and sync state. */ |
4081 | ||
9cbc821d | 4082 | static void |
04bd08de | 4083 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 4084 | { |
c8d104ad PA |
4085 | struct remote_state *rs = get_remote_state (); |
4086 | struct packet_config *noack_config; | |
2d717e4f | 4087 | char *wait_status = NULL; |
8621d6a9 | 4088 | |
048094ac PA |
4089 | /* Signal other parts that we're going through the initial setup, |
4090 | and so things may not be stable yet. E.g., we don't try to | |
4091 | install tracepoints until we've relocated symbols. Also, a | |
4092 | Ctrl-C before we're connected and synced up can't interrupt the | |
4093 | target. Instead, it offers to drop the (potentially wedged) | |
4094 | connection. */ | |
4095 | rs->starting_up = 1; | |
4096 | ||
522002f9 | 4097 | QUIT; |
c906108c | 4098 | |
9a7071a8 JB |
4099 | if (interrupt_on_connect) |
4100 | send_interrupt_sequence (); | |
4101 | ||
57e12211 | 4102 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4103 | remote_serial_write ("+", 1); |
1e51243a | 4104 | |
c8d104ad PA |
4105 | /* The first packet we send to the target is the optional "supported |
4106 | packets" request. If the target can answer this, it will tell us | |
4107 | which later probes to skip. */ | |
4108 | remote_query_supported (); | |
4109 | ||
d914c394 | 4110 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4111 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4112 | remote_set_permissions (target); |
d914c394 | 4113 | |
57809e5e JK |
4114 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4115 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4116 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4117 | invalid reply and GDB would return error in | |
4118 | remote_hostio_set_filesystem, making remote files access impossible. | |
4119 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4120 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4121 | { | |
4122 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4123 | ||
4124 | putpkt (v_mustreplyempty); | |
4125 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4126 | if (strcmp (rs->buf, "OK") == 0) | |
4127 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4128 | else if (strcmp (rs->buf, "") != 0) | |
4129 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4130 | rs->buf); | |
4131 | } | |
4132 | ||
c8d104ad PA |
4133 | /* Next, we possibly activate noack mode. |
4134 | ||
4135 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4136 | enable noack mode if the stub reported a wish for it with | |
4137 | qSupported. | |
4138 | ||
4139 | If set to TRUE, then enable noack mode even if the stub didn't | |
4140 | report it in qSupported. If the stub doesn't reply OK, the | |
4141 | session ends with an error. | |
4142 | ||
4143 | If FALSE, then don't activate noack mode, regardless of what the | |
4144 | stub claimed should be the default with qSupported. */ | |
4145 | ||
4146 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4147 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4148 | { |
4149 | putpkt ("QStartNoAckMode"); | |
4150 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4151 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4152 | rs->noack_mode = 1; | |
4153 | } | |
4154 | ||
04bd08de | 4155 | if (extended_p) |
5fe04517 PA |
4156 | { |
4157 | /* Tell the remote that we are using the extended protocol. */ | |
4158 | putpkt ("!"); | |
4159 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4160 | } | |
4161 | ||
9b224c5e PA |
4162 | /* Let the target know which signals it is allowed to pass down to |
4163 | the program. */ | |
4164 | update_signals_program_target (); | |
4165 | ||
d962ef82 DJ |
4166 | /* Next, if the target can specify a description, read it. We do |
4167 | this before anything involving memory or registers. */ | |
4168 | target_find_description (); | |
4169 | ||
6c95b8df PA |
4170 | /* Next, now that we know something about the target, update the |
4171 | address spaces in the program spaces. */ | |
4172 | update_address_spaces (); | |
4173 | ||
50c71eaf PA |
4174 | /* On OSs where the list of libraries is global to all |
4175 | processes, we fetch them early. */ | |
f5656ead | 4176 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4177 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4178 | |
6efcd9a8 | 4179 | if (target_is_non_stop_p ()) |
74531fed | 4180 | { |
4082afcc | 4181 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4182 | error (_("Non-stop mode requested, but remote " |
4183 | "does not support non-stop")); | |
74531fed PA |
4184 | |
4185 | putpkt ("QNonStop:1"); | |
4186 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4187 | ||
4188 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4189 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4190 | |
4191 | /* Find about threads and processes the stub is already | |
4192 | controlling. We default to adding them in the running state. | |
4193 | The '?' query below will then tell us about which threads are | |
4194 | stopped. */ | |
e8032dde | 4195 | remote_update_thread_list (target); |
74531fed | 4196 | } |
4082afcc | 4197 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4198 | { |
4199 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4200 | Request it explicitly. */ |
74531fed PA |
4201 | putpkt ("QNonStop:0"); |
4202 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4203 | ||
4204 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4205 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4206 | } |
4207 | ||
a0743c90 YQ |
4208 | /* Upload TSVs regardless of whether the target is running or not. The |
4209 | remote stub, such as GDBserver, may have some predefined or builtin | |
4210 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4211 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4212 | { |
4213 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4214 | ||
181e3713 | 4215 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4216 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4217 | } | |
4218 | ||
2d717e4f DJ |
4219 | /* Check whether the target is running now. */ |
4220 | putpkt ("?"); | |
4221 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4222 | ||
6efcd9a8 | 4223 | if (!target_is_non_stop_p ()) |
2d717e4f | 4224 | { |
74531fed | 4225 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4226 | { |
04bd08de | 4227 | if (!extended_p) |
74531fed | 4228 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4229 | |
4230 | /* We're connected, but not running. Drop out before we | |
4231 | call start_remote. */ | |
e278ad5b | 4232 | rs->starting_up = 0; |
c35b1492 | 4233 | return; |
2d717e4f DJ |
4234 | } |
4235 | else | |
74531fed | 4236 | { |
74531fed | 4237 | /* Save the reply for later. */ |
224c3ddb | 4238 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4239 | strcpy (wait_status, rs->buf); |
4240 | } | |
4241 | ||
b7ea362b | 4242 | /* Fetch thread list. */ |
e8032dde | 4243 | target_update_thread_list (); |
b7ea362b | 4244 | |
74531fed PA |
4245 | /* Let the stub know that we want it to return the thread. */ |
4246 | set_continue_thread (minus_one_ptid); | |
4247 | ||
b7ea362b PA |
4248 | if (thread_count () == 0) |
4249 | { | |
4250 | /* Target has no concept of threads at all. GDB treats | |
4251 | non-threaded target as single-threaded; add a main | |
4252 | thread. */ | |
4253 | add_current_inferior_and_thread (wait_status); | |
4254 | } | |
4255 | else | |
4256 | { | |
4257 | /* We have thread information; select the thread the target | |
4258 | says should be current. If we're reconnecting to a | |
4259 | multi-threaded program, this will ideally be the thread | |
4260 | that last reported an event before GDB disconnected. */ | |
4261 | inferior_ptid = get_current_thread (wait_status); | |
4262 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4263 | { | |
4264 | /* Odd... The target was able to list threads, but not | |
4265 | tell us which thread was current (no "thread" | |
4266 | register in T stop reply?). Just pick the first | |
4267 | thread in the thread list then. */ | |
c9f35b34 KB |
4268 | |
4269 | if (remote_debug) | |
4270 | fprintf_unfiltered (gdb_stdlog, | |
4271 | "warning: couldn't determine remote " | |
4272 | "current thread; picking first in list.\n"); | |
4273 | ||
b7ea362b PA |
4274 | inferior_ptid = thread_list->ptid; |
4275 | } | |
4276 | } | |
74531fed | 4277 | |
6e586cc5 YQ |
4278 | /* init_wait_for_inferior should be called before get_offsets in order |
4279 | to manage `inserted' flag in bp loc in a correct state. | |
4280 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4281 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4282 | start_remote, set `inserted' flag to 1. In the initialization of | |
4283 | inferior, breakpoint_init_inferior should be called first, and then | |
4284 | breakpoint_re_set can be called. If this order is broken, state of | |
4285 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4286 | manipulation. */ | |
4287 | init_wait_for_inferior (); | |
4288 | ||
74531fed PA |
4289 | get_offsets (); /* Get text, data & bss offsets. */ |
4290 | ||
d962ef82 DJ |
4291 | /* If we could not find a description using qXfer, and we know |
4292 | how to do it some other way, try again. This is not | |
4293 | supported for non-stop; it could be, but it is tricky if | |
4294 | there are no stopped threads when we connect. */ | |
04bd08de | 4295 | if (remote_read_description_p (target) |
f5656ead | 4296 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4297 | { |
4298 | target_clear_description (); | |
4299 | target_find_description (); | |
4300 | } | |
4301 | ||
74531fed PA |
4302 | /* Use the previously fetched status. */ |
4303 | gdb_assert (wait_status != NULL); | |
4304 | strcpy (rs->buf, wait_status); | |
4305 | rs->cached_wait_status = 1; | |
4306 | ||
04bd08de | 4307 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4308 | } |
4309 | else | |
4310 | { | |
68c97600 PA |
4311 | /* Clear WFI global state. Do this before finding about new |
4312 | threads and inferiors, and setting the current inferior. | |
4313 | Otherwise we would clear the proceed status of the current | |
4314 | inferior when we want its stop_soon state to be preserved | |
4315 | (see notice_new_inferior). */ | |
4316 | init_wait_for_inferior (); | |
4317 | ||
74531fed PA |
4318 | /* In non-stop, we will either get an "OK", meaning that there |
4319 | are no stopped threads at this time; or, a regular stop | |
4320 | reply. In the latter case, there may be more than one thread | |
4321 | stopped --- we pull them all out using the vStopped | |
4322 | mechanism. */ | |
4323 | if (strcmp (rs->buf, "OK") != 0) | |
4324 | { | |
722247f1 | 4325 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4326 | |
722247f1 YQ |
4327 | /* remote_notif_get_pending_replies acks this one, and gets |
4328 | the rest out. */ | |
f48ff2a7 | 4329 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4330 | = remote_notif_parse (notif, rs->buf); |
4331 | remote_notif_get_pending_events (notif); | |
74531fed | 4332 | } |
2d717e4f | 4333 | |
74531fed PA |
4334 | if (thread_count () == 0) |
4335 | { | |
04bd08de | 4336 | if (!extended_p) |
74531fed | 4337 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4338 | |
c35b1492 PA |
4339 | /* We're connected, but not running. Drop out before we |
4340 | call start_remote. */ | |
e278ad5b | 4341 | rs->starting_up = 0; |
c35b1492 PA |
4342 | return; |
4343 | } | |
74531fed | 4344 | |
74531fed PA |
4345 | /* In non-stop mode, any cached wait status will be stored in |
4346 | the stop reply queue. */ | |
4347 | gdb_assert (wait_status == NULL); | |
f0223081 | 4348 | |
2455069d | 4349 | /* Report all signals during attach/startup. */ |
94bedb42 | 4350 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4351 | |
4352 | /* If there are already stopped threads, mark them stopped and | |
4353 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4354 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4355 | |
4356 | if (target_can_async_p ()) | |
4357 | target_async (1); | |
74531fed | 4358 | } |
c8d104ad | 4359 | |
c8d104ad PA |
4360 | /* If we connected to a live target, do some additional setup. */ |
4361 | if (target_has_execution) | |
4362 | { | |
f4ccffad | 4363 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4364 | remote_check_symbols (); |
c8d104ad | 4365 | } |
50c71eaf | 4366 | |
d5551862 SS |
4367 | /* Possibly the target has been engaged in a trace run started |
4368 | previously; find out where things are at. */ | |
8bd200f1 | 4369 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4370 | { |
00bf0b85 | 4371 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4372 | |
00bf0b85 SS |
4373 | if (current_trace_status ()->running) |
4374 | printf_filtered (_("Trace is already running on the target.\n")); | |
4375 | ||
ab6617cc | 4376 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4377 | |
4378 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4379 | } |
4380 | ||
c0272db5 TW |
4381 | /* Possibly the target has been engaged in a btrace record started |
4382 | previously; find out where things are at. */ | |
4383 | remote_btrace_maybe_reopen (); | |
4384 | ||
1e51243a PA |
4385 | /* The thread and inferior lists are now synchronized with the |
4386 | target, our symbols have been relocated, and we're merged the | |
4387 | target's tracepoints with ours. We're done with basic start | |
4388 | up. */ | |
4389 | rs->starting_up = 0; | |
4390 | ||
a25a5a45 PA |
4391 | /* Maybe breakpoints are global and need to be inserted now. */ |
4392 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4393 | insert_breakpoints (); |
c906108c SS |
4394 | } |
4395 | ||
4396 | /* Open a connection to a remote debugger. | |
4397 | NAME is the filename used for communication. */ | |
4398 | ||
4399 | static void | |
014f9477 | 4400 | remote_open (const char *name, int from_tty) |
c906108c | 4401 | { |
75c99385 | 4402 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4403 | } |
4404 | ||
c906108c SS |
4405 | /* Open a connection to a remote debugger using the extended |
4406 | remote gdb protocol. NAME is the filename used for communication. */ | |
4407 | ||
4408 | static void | |
014f9477 | 4409 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4410 | { |
75c99385 | 4411 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4412 | } |
4413 | ||
ca4f7f8b PA |
4414 | /* Reset all packets back to "unknown support". Called when opening a |
4415 | new connection to a remote target. */ | |
c906108c | 4416 | |
d471ea57 | 4417 | static void |
ca4f7f8b | 4418 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4419 | { |
4420 | int i; | |
a744cf53 | 4421 | |
444abaca | 4422 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4423 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4424 | } |
4425 | ||
ca4f7f8b PA |
4426 | /* Initialize all packet configs. */ |
4427 | ||
4428 | static void | |
4429 | init_all_packet_configs (void) | |
4430 | { | |
4431 | int i; | |
4432 | ||
4433 | for (i = 0; i < PACKET_MAX; i++) | |
4434 | { | |
4435 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4436 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4437 | } | |
4438 | } | |
4439 | ||
23860348 | 4440 | /* Symbol look-up. */ |
dc8acb97 MS |
4441 | |
4442 | static void | |
36d25514 | 4443 | remote_check_symbols (void) |
dc8acb97 | 4444 | { |
d01949b6 | 4445 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4446 | char *msg, *reply, *tmp; |
dc8acb97 | 4447 | int end; |
28170b88 | 4448 | long reply_size; |
a5c0808e | 4449 | struct cleanup *old_chain; |
dc8acb97 | 4450 | |
63154eca PA |
4451 | /* The remote side has no concept of inferiors that aren't running |
4452 | yet, it only knows about running processes. If we're connected | |
4453 | but our current inferior is not running, we should not invite the | |
4454 | remote target to request symbol lookups related to its | |
4455 | (unrelated) current process. */ | |
4456 | if (!target_has_execution) | |
4457 | return; | |
4458 | ||
4082afcc | 4459 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4460 | return; |
4461 | ||
63154eca PA |
4462 | /* Make sure the remote is pointing at the right process. Note |
4463 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4464 | set_general_process (); |
4465 | ||
6d820c5c DJ |
4466 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4467 | because we need both at the same time. */ | |
224c3ddb | 4468 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4469 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4470 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4471 | make_cleanup (free_current_contents, &reply); | |
4472 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4473 | |
23860348 | 4474 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4475 | |
4476 | putpkt ("qSymbol::"); | |
28170b88 MK |
4477 | getpkt (&reply, &reply_size, 0); |
4478 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4479 | |
61012eef | 4480 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4481 | { |
77e371c0 TT |
4482 | struct bound_minimal_symbol sym; |
4483 | ||
dc8acb97 | 4484 | tmp = &reply[8]; |
cfd77fa1 | 4485 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4486 | msg[end] = '\0'; |
4487 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4488 | if (sym.minsym == NULL) |
ea9c271d | 4489 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4490 | else |
2bbe3cc1 | 4491 | { |
f5656ead | 4492 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4493 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4494 | |
4495 | /* If this is a function address, return the start of code | |
4496 | instead of any data function descriptor. */ | |
f5656ead | 4497 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4498 | sym_addr, |
4499 | ¤t_target); | |
4500 | ||
4501 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4502 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4503 | } |
4504 | ||
dc8acb97 | 4505 | putpkt (msg); |
28170b88 | 4506 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4507 | } |
a5c0808e PA |
4508 | |
4509 | do_cleanups (old_chain); | |
dc8acb97 MS |
4510 | } |
4511 | ||
9db8d71f | 4512 | static struct serial * |
baa336ce | 4513 | remote_serial_open (const char *name) |
9db8d71f DJ |
4514 | { |
4515 | static int udp_warning = 0; | |
4516 | ||
4517 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4518 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4519 | serial connection is reliable and not the serial connection promising | |
4520 | to be. */ | |
61012eef | 4521 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4522 | { |
3e43a32a MS |
4523 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4524 | "Some events may be lost, rendering further debugging " | |
4525 | "impossible.")); | |
9db8d71f DJ |
4526 | udp_warning = 1; |
4527 | } | |
4528 | ||
4529 | return serial_open (name); | |
4530 | } | |
4531 | ||
d914c394 SS |
4532 | /* Inform the target of our permission settings. The permission flags |
4533 | work without this, but if the target knows the settings, it can do | |
4534 | a couple things. First, it can add its own check, to catch cases | |
4535 | that somehow manage to get by the permissions checks in target | |
4536 | methods. Second, if the target is wired to disallow particular | |
4537 | settings (for instance, a system in the field that is not set up to | |
4538 | be able to stop at a breakpoint), it can object to any unavailable | |
4539 | permissions. */ | |
4540 | ||
4541 | void | |
c378d69d | 4542 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4543 | { |
4544 | struct remote_state *rs = get_remote_state (); | |
4545 | ||
bba74b36 YQ |
4546 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4547 | "WriteReg:%x;WriteMem:%x;" | |
4548 | "InsertBreak:%x;InsertTrace:%x;" | |
4549 | "InsertFastTrace:%x;Stop:%x", | |
4550 | may_write_registers, may_write_memory, | |
4551 | may_insert_breakpoints, may_insert_tracepoints, | |
4552 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4553 | putpkt (rs->buf); |
4554 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4555 | ||
4556 | /* If the target didn't like the packet, warn the user. Do not try | |
4557 | to undo the user's settings, that would just be maddening. */ | |
4558 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4559 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4560 | } |
4561 | ||
be2a5f71 DJ |
4562 | /* This type describes each known response to the qSupported |
4563 | packet. */ | |
4564 | struct protocol_feature | |
4565 | { | |
4566 | /* The name of this protocol feature. */ | |
4567 | const char *name; | |
4568 | ||
4569 | /* The default for this protocol feature. */ | |
4570 | enum packet_support default_support; | |
4571 | ||
4572 | /* The function to call when this feature is reported, or after | |
4573 | qSupported processing if the feature is not supported. | |
4574 | The first argument points to this structure. The second | |
4575 | argument indicates whether the packet requested support be | |
4576 | enabled, disabled, or probed (or the default, if this function | |
4577 | is being called at the end of processing and this feature was | |
4578 | not reported). The third argument may be NULL; if not NULL, it | |
4579 | is a NUL-terminated string taken from the packet following | |
4580 | this feature's name and an equals sign. */ | |
4581 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4582 | const char *); | |
4583 | ||
4584 | /* The corresponding packet for this feature. Only used if | |
4585 | FUNC is remote_supported_packet. */ | |
4586 | int packet; | |
4587 | }; | |
4588 | ||
be2a5f71 DJ |
4589 | static void |
4590 | remote_supported_packet (const struct protocol_feature *feature, | |
4591 | enum packet_support support, | |
4592 | const char *argument) | |
4593 | { | |
4594 | if (argument) | |
4595 | { | |
4596 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4597 | " \"%s\"."), feature->name); | |
4598 | return; | |
4599 | } | |
4600 | ||
4082afcc | 4601 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4602 | } |
be2a5f71 DJ |
4603 | |
4604 | static void | |
4605 | remote_packet_size (const struct protocol_feature *feature, | |
4606 | enum packet_support support, const char *value) | |
4607 | { | |
4608 | struct remote_state *rs = get_remote_state (); | |
4609 | ||
4610 | int packet_size; | |
4611 | char *value_end; | |
4612 | ||
4613 | if (support != PACKET_ENABLE) | |
4614 | return; | |
4615 | ||
4616 | if (value == NULL || *value == '\0') | |
4617 | { | |
4618 | warning (_("Remote target reported \"%s\" without a size."), | |
4619 | feature->name); | |
4620 | return; | |
4621 | } | |
4622 | ||
4623 | errno = 0; | |
4624 | packet_size = strtol (value, &value_end, 16); | |
4625 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4626 | { | |
4627 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4628 | feature->name, value); | |
4629 | return; | |
4630 | } | |
4631 | ||
be2a5f71 DJ |
4632 | /* Record the new maximum packet size. */ |
4633 | rs->explicit_packet_size = packet_size; | |
4634 | } | |
4635 | ||
dc473cfb | 4636 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4637 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4638 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4639 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4640 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4641 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4642 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4643 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4644 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4645 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4646 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4647 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4648 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4649 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4650 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4651 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4652 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4653 | PACKET_qXfer_spu_read }, | |
4654 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4655 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4656 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4657 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4658 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4659 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4660 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4661 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4662 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4663 | PACKET_QPassSignals }, | |
82075af2 JS |
4664 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4665 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4666 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4667 | PACKET_QProgramSignals }, | |
aefd8b33 SDJ |
4668 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
4669 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
4670 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
4671 | PACKET_QEnvironmentHexEncoded }, | |
4672 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
4673 | PACKET_QEnvironmentReset }, | |
4674 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
4675 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
4676 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4677 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4678 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4679 | PACKET_multiprocess_feature }, | |
4680 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4681 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4682 | PACKET_qXfer_siginfo_read }, | |
4683 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4684 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4685 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4686 | PACKET_ConditionalTracepoints }, |
4082afcc | 4687 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4688 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4689 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4690 | PACKET_BreakpointCommands }, |
4082afcc | 4691 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4692 | PACKET_FastTracepoints }, |
4082afcc | 4693 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4694 | PACKET_StaticTracepoints }, |
4082afcc | 4695 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4696 | PACKET_InstallInTrace}, |
4082afcc PA |
4697 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4698 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4699 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4700 | PACKET_bc }, | |
4701 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4702 | PACKET_bs }, | |
409873ef SS |
4703 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4704 | PACKET_TracepointSource }, | |
d914c394 SS |
4705 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4706 | PACKET_QAllow }, | |
4082afcc PA |
4707 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4708 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4709 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4710 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4711 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4712 | PACKET_qXfer_uib }, | |
03583c20 UW |
4713 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4714 | PACKET_QDisableRandomization }, | |
d1feda86 | 4715 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4716 | { "QTBuffer:size", PACKET_DISABLE, |
4717 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4718 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4719 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4720 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4721 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4722 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4723 | PACKET_qXfer_btrace }, |
4724 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4725 | PACKET_qXfer_btrace_conf }, |
4726 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4727 | PACKET_Qbtrace_conf_bts_size }, |
4728 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4729 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4730 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4731 | PACKET_fork_event_feature }, | |
4732 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4733 | PACKET_vfork_event_feature }, | |
94585166 DB |
4734 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4735 | PACKET_exec_event_feature }, | |
b20a6524 | 4736 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4737 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4738 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4739 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4740 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4741 | }; |
4742 | ||
c8d5aac9 L |
4743 | static char *remote_support_xml; |
4744 | ||
4745 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4746 | ||
4747 | void | |
6e39997a | 4748 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4749 | { |
4750 | #if defined(HAVE_LIBEXPAT) | |
4751 | if (remote_support_xml == NULL) | |
c4f7c687 | 4752 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4753 | else |
4754 | { | |
4755 | char *copy = xstrdup (remote_support_xml + 13); | |
4756 | char *p = strtok (copy, ","); | |
4757 | ||
4758 | do | |
4759 | { | |
4760 | if (strcmp (p, xml) == 0) | |
4761 | { | |
4762 | /* already there */ | |
4763 | xfree (copy); | |
4764 | return; | |
4765 | } | |
4766 | } | |
4767 | while ((p = strtok (NULL, ",")) != NULL); | |
4768 | xfree (copy); | |
4769 | ||
94b0dee1 PA |
4770 | remote_support_xml = reconcat (remote_support_xml, |
4771 | remote_support_xml, ",", xml, | |
4772 | (char *) NULL); | |
c8d5aac9 L |
4773 | } |
4774 | #endif | |
4775 | } | |
4776 | ||
4777 | static char * | |
4778 | remote_query_supported_append (char *msg, const char *append) | |
4779 | { | |
4780 | if (msg) | |
94b0dee1 | 4781 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4782 | else |
4783 | return xstrdup (append); | |
4784 | } | |
4785 | ||
be2a5f71 DJ |
4786 | static void |
4787 | remote_query_supported (void) | |
4788 | { | |
4789 | struct remote_state *rs = get_remote_state (); | |
4790 | char *next; | |
4791 | int i; | |
4792 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4793 | ||
4794 | /* The packet support flags are handled differently for this packet | |
4795 | than for most others. We treat an error, a disabled packet, and | |
4796 | an empty response identically: any features which must be reported | |
4797 | to be used will be automatically disabled. An empty buffer | |
4798 | accomplishes this, since that is also the representation for a list | |
4799 | containing no features. */ | |
4800 | ||
4801 | rs->buf[0] = 0; | |
4082afcc | 4802 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4803 | { |
c8d5aac9 | 4804 | char *q = NULL; |
94b0dee1 | 4805 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4806 | |
73b8c1fd PA |
4807 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4808 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4809 | |
f7e6eed5 PA |
4810 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4811 | q = remote_query_supported_append (q, "swbreak+"); | |
4812 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4813 | q = remote_query_supported_append (q, "hwbreak+"); | |
4814 | ||
dde08ee1 PA |
4815 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4816 | ||
8020350c DB |
4817 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4818 | != AUTO_BOOLEAN_FALSE) | |
4819 | q = remote_query_supported_append (q, "fork-events+"); | |
4820 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4821 | != AUTO_BOOLEAN_FALSE) | |
4822 | q = remote_query_supported_append (q, "vfork-events+"); | |
4823 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4824 | != AUTO_BOOLEAN_FALSE) | |
4825 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4826 | |
750ce8d1 YQ |
4827 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4828 | q = remote_query_supported_append (q, "vContSupported+"); | |
4829 | ||
65706a29 PA |
4830 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4831 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4832 | ||
f2faf941 PA |
4833 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4834 | q = remote_query_supported_append (q, "no-resumed+"); | |
4835 | ||
b35d5edb PA |
4836 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4837 | the qSupported:xmlRegisters=i386 handling. */ | |
4838 | if (remote_support_xml != NULL) | |
4839 | q = remote_query_supported_append (q, remote_support_xml); | |
4840 | ||
dde08ee1 PA |
4841 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4842 | putpkt (q); | |
82f73884 | 4843 | |
94b0dee1 PA |
4844 | do_cleanups (old_chain); |
4845 | ||
be2a5f71 DJ |
4846 | getpkt (&rs->buf, &rs->buf_size, 0); |
4847 | ||
4848 | /* If an error occured, warn, but do not return - just reset the | |
4849 | buffer to empty and go on to disable features. */ | |
4850 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4851 | == PACKET_ERROR) | |
4852 | { | |
4853 | warning (_("Remote failure reply: %s"), rs->buf); | |
4854 | rs->buf[0] = 0; | |
4855 | } | |
4856 | } | |
4857 | ||
4858 | memset (seen, 0, sizeof (seen)); | |
4859 | ||
4860 | next = rs->buf; | |
4861 | while (*next) | |
4862 | { | |
4863 | enum packet_support is_supported; | |
4864 | char *p, *end, *name_end, *value; | |
4865 | ||
4866 | /* First separate out this item from the rest of the packet. If | |
4867 | there's another item after this, we overwrite the separator | |
4868 | (terminated strings are much easier to work with). */ | |
4869 | p = next; | |
4870 | end = strchr (p, ';'); | |
4871 | if (end == NULL) | |
4872 | { | |
4873 | end = p + strlen (p); | |
4874 | next = end; | |
4875 | } | |
4876 | else | |
4877 | { | |
89be2091 DJ |
4878 | *end = '\0'; |
4879 | next = end + 1; | |
4880 | ||
be2a5f71 DJ |
4881 | if (end == p) |
4882 | { | |
4883 | warning (_("empty item in \"qSupported\" response")); | |
4884 | continue; | |
4885 | } | |
be2a5f71 DJ |
4886 | } |
4887 | ||
4888 | name_end = strchr (p, '='); | |
4889 | if (name_end) | |
4890 | { | |
4891 | /* This is a name=value entry. */ | |
4892 | is_supported = PACKET_ENABLE; | |
4893 | value = name_end + 1; | |
4894 | *name_end = '\0'; | |
4895 | } | |
4896 | else | |
4897 | { | |
4898 | value = NULL; | |
4899 | switch (end[-1]) | |
4900 | { | |
4901 | case '+': | |
4902 | is_supported = PACKET_ENABLE; | |
4903 | break; | |
4904 | ||
4905 | case '-': | |
4906 | is_supported = PACKET_DISABLE; | |
4907 | break; | |
4908 | ||
4909 | case '?': | |
4910 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4911 | break; | |
4912 | ||
4913 | default: | |
3e43a32a MS |
4914 | warning (_("unrecognized item \"%s\" " |
4915 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4916 | continue; |
4917 | } | |
4918 | end[-1] = '\0'; | |
4919 | } | |
4920 | ||
4921 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4922 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4923 | { | |
4924 | const struct protocol_feature *feature; | |
4925 | ||
4926 | seen[i] = 1; | |
4927 | feature = &remote_protocol_features[i]; | |
4928 | feature->func (feature, is_supported, value); | |
4929 | break; | |
4930 | } | |
4931 | } | |
4932 | ||
4933 | /* If we increased the packet size, make sure to increase the global | |
4934 | buffer size also. We delay this until after parsing the entire | |
4935 | qSupported packet, because this is the same buffer we were | |
4936 | parsing. */ | |
4937 | if (rs->buf_size < rs->explicit_packet_size) | |
4938 | { | |
4939 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4940 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4941 | } |
4942 | ||
4943 | /* Handle the defaults for unmentioned features. */ | |
4944 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4945 | if (!seen[i]) | |
4946 | { | |
4947 | const struct protocol_feature *feature; | |
4948 | ||
4949 | feature = &remote_protocol_features[i]; | |
4950 | feature->func (feature, feature->default_support, NULL); | |
4951 | } | |
4952 | } | |
4953 | ||
048094ac PA |
4954 | /* Serial QUIT handler for the remote serial descriptor. |
4955 | ||
4956 | Defers handling a Ctrl-C until we're done with the current | |
4957 | command/response packet sequence, unless: | |
4958 | ||
4959 | - We're setting up the connection. Don't send a remote interrupt | |
4960 | request, as we're not fully synced yet. Quit immediately | |
4961 | instead. | |
4962 | ||
4963 | - The target has been resumed in the foreground | |
223ffa71 | 4964 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
4965 | packet, and we're blocked waiting for the stop reply, thus a |
4966 | Ctrl-C should be immediately sent to the target. | |
4967 | ||
4968 | - We get a second Ctrl-C while still within the same serial read or | |
4969 | write. In that case the serial is seemingly wedged --- offer to | |
4970 | quit/disconnect. | |
4971 | ||
4972 | - We see a second Ctrl-C without target response, after having | |
4973 | previously interrupted the target. In that case the target/stub | |
4974 | is probably wedged --- offer to quit/disconnect. | |
4975 | */ | |
4976 | ||
4977 | static void | |
4978 | remote_serial_quit_handler (void) | |
4979 | { | |
4980 | struct remote_state *rs = get_remote_state (); | |
4981 | ||
4982 | if (check_quit_flag ()) | |
4983 | { | |
4984 | /* If we're starting up, we're not fully synced yet. Quit | |
4985 | immediately. */ | |
4986 | if (rs->starting_up) | |
4987 | quit (); | |
4988 | else if (rs->got_ctrlc_during_io) | |
4989 | { | |
4990 | if (query (_("The target is not responding to GDB commands.\n" | |
4991 | "Stop debugging it? "))) | |
4992 | remote_unpush_and_throw (); | |
4993 | } | |
4994 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 4995 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
4996 | interrupt_query (); |
4997 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
4998 | an interrupt request. */ | |
223ffa71 | 4999 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
048094ac PA |
5000 | target_interrupt (inferior_ptid); |
5001 | else | |
5002 | rs->got_ctrlc_during_io = 1; | |
5003 | } | |
5004 | } | |
5005 | ||
78a095c3 JK |
5006 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
5007 | on it so remove them first. */ | |
5008 | ||
5009 | static void | |
5010 | remote_unpush_target (void) | |
5011 | { | |
915ef8b1 | 5012 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 5013 | } |
be2a5f71 | 5014 | |
048094ac PA |
5015 | static void |
5016 | remote_unpush_and_throw (void) | |
5017 | { | |
5018 | remote_unpush_target (); | |
5019 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
5020 | } | |
5021 | ||
c906108c | 5022 | static void |
014f9477 | 5023 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 5024 | struct target_ops *target, int extended_p) |
c906108c | 5025 | { |
d01949b6 | 5026 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 5027 | |
c906108c | 5028 | if (name == 0) |
8a3fe4f8 | 5029 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5030 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5031 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5032 | |
23860348 | 5033 | /* See FIXME above. */ |
c6ebd6cf | 5034 | if (!target_async_permitted) |
92d1e331 | 5035 | wait_forever_enabled_p = 1; |
6426a772 | 5036 | |
2d717e4f | 5037 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5038 | Ask this question first, before target_preopen has a chance to kill |
5039 | anything. */ | |
5d93a237 | 5040 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 5041 | { |
78a095c3 JK |
5042 | if (from_tty |
5043 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5044 | error (_("Still connected.")); |
5045 | } | |
5046 | ||
78a095c3 | 5047 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5048 | target_preopen (from_tty); |
5049 | ||
89be2091 | 5050 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
5051 | xfree (rs->last_pass_packet); |
5052 | rs->last_pass_packet = NULL; | |
89be2091 | 5053 | |
9b224c5e PA |
5054 | /* Make sure we send the program signals list the next time we |
5055 | resume. */ | |
5e4a05c4 TT |
5056 | xfree (rs->last_program_signals_packet); |
5057 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 5058 | |
ad9a8f3f | 5059 | remote_fileio_reset (); |
1dd41f16 NS |
5060 | reopen_exec_file (); |
5061 | reread_symbols (); | |
5062 | ||
5d93a237 TT |
5063 | rs->remote_desc = remote_serial_open (name); |
5064 | if (!rs->remote_desc) | |
c906108c SS |
5065 | perror_with_name (name); |
5066 | ||
5067 | if (baud_rate != -1) | |
5068 | { | |
5d93a237 | 5069 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5070 | { |
9b74d5d3 KB |
5071 | /* The requested speed could not be set. Error out to |
5072 | top level after closing remote_desc. Take care to | |
5073 | set remote_desc to NULL to avoid closing remote_desc | |
5074 | more than once. */ | |
5d93a237 TT |
5075 | serial_close (rs->remote_desc); |
5076 | rs->remote_desc = NULL; | |
c906108c SS |
5077 | perror_with_name (name); |
5078 | } | |
5079 | } | |
5080 | ||
236af5e3 | 5081 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5082 | serial_raw (rs->remote_desc); |
c906108c SS |
5083 | |
5084 | /* If there is something sitting in the buffer we might take it as a | |
5085 | response to a command, which would be bad. */ | |
5d93a237 | 5086 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5087 | |
5088 | if (from_tty) | |
5089 | { | |
5090 | puts_filtered ("Remote debugging using "); | |
5091 | puts_filtered (name); | |
5092 | puts_filtered ("\n"); | |
5093 | } | |
23860348 | 5094 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 5095 | |
74531fed PA |
5096 | /* Register extra event sources in the event loop. */ |
5097 | remote_async_inferior_event_token | |
5098 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5099 | NULL); | |
5965e028 | 5100 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5101 | |
be2a5f71 DJ |
5102 | /* Reset the target state; these things will be queried either by |
5103 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5104 | reset_all_packet_configs_support (); |
74531fed | 5105 | rs->cached_wait_status = 0; |
be2a5f71 | 5106 | rs->explicit_packet_size = 0; |
a6f3e723 | 5107 | rs->noack_mode = 0; |
82f73884 | 5108 | rs->extended = extended_p; |
e24a49d8 | 5109 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5110 | rs->ctrlc_pending_p = 0; |
048094ac | 5111 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5112 | |
47f8a51d TT |
5113 | rs->general_thread = not_sent_ptid; |
5114 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5115 | rs->remote_traceframe_number = -1; |
c906108c | 5116 | |
3a00c802 PA |
5117 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5118 | ||
9d1f7ab2 | 5119 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5120 | rs->use_threadinfo_query = 1; |
5121 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5122 | |
80152258 PA |
5123 | readahead_cache_invalidate (); |
5124 | ||
048094ac PA |
5125 | /* Start out by owning the terminal. */ |
5126 | remote_async_terminal_ours_p = 1; | |
5127 | ||
c6ebd6cf | 5128 | if (target_async_permitted) |
92d1e331 | 5129 | { |
92d1e331 DJ |
5130 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5131 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5132 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5133 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5134 | around this. Eventually a mechanism that allows |
92d1e331 | 5135 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5136 | implemented. */ |
92d1e331 DJ |
5137 | wait_forever_enabled_p = 0; |
5138 | } | |
5139 | ||
23860348 | 5140 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5141 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5142 | |
74531fed PA |
5143 | /* Start afresh. */ |
5144 | init_thread_list (); | |
5145 | ||
36918e70 | 5146 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5147 | target (we'd otherwise be in an inconsistent state) and then |
5148 | propogate the error on up the exception chain. This ensures that | |
5149 | the caller doesn't stumble along blindly assuming that the | |
5150 | function succeeded. The CLI doesn't have this problem but other | |
5151 | UI's, such as MI do. | |
36918e70 AC |
5152 | |
5153 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5154 | this function should return an error indication letting the | |
ce2826aa | 5155 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5156 | ``target remote'' is directly wired to this function making that |
5157 | impossible. On a positive note, the CLI side of this problem has | |
5158 | been fixed - the function set_cmd_context() makes it possible for | |
5159 | all the ``target ....'' commands to share a common callback | |
5160 | function. See cli-dump.c. */ | |
109c3e39 | 5161 | { |
2d717e4f | 5162 | |
492d29ea | 5163 | TRY |
04bd08de TT |
5164 | { |
5165 | remote_start_remote (from_tty, target, extended_p); | |
5166 | } | |
492d29ea | 5167 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5168 | { |
c8d104ad PA |
5169 | /* Pop the partially set up target - unless something else did |
5170 | already before throwing the exception. */ | |
5d93a237 | 5171 | if (rs->remote_desc != NULL) |
78a095c3 | 5172 | remote_unpush_target (); |
c6ebd6cf | 5173 | if (target_async_permitted) |
109c3e39 AC |
5174 | wait_forever_enabled_p = 1; |
5175 | throw_exception (ex); | |
5176 | } | |
492d29ea | 5177 | END_CATCH |
109c3e39 | 5178 | } |
c906108c | 5179 | |
f4abbc16 MM |
5180 | remote_btrace_reset (); |
5181 | ||
c6ebd6cf | 5182 | if (target_async_permitted) |
92d1e331 | 5183 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5184 | } |
5185 | ||
de0d863e DB |
5186 | /* Detach the specified process. */ |
5187 | ||
5188 | static void | |
5189 | remote_detach_pid (int pid) | |
5190 | { | |
5191 | struct remote_state *rs = get_remote_state (); | |
5192 | ||
5193 | if (remote_multi_process_p (rs)) | |
5194 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5195 | else | |
5196 | strcpy (rs->buf, "D"); | |
5197 | ||
5198 | putpkt (rs->buf); | |
5199 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5200 | ||
5201 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5202 | ; | |
5203 | else if (rs->buf[0] == '\0') | |
5204 | error (_("Remote doesn't know how to detach")); | |
5205 | else | |
5206 | error (_("Can't detach process.")); | |
5207 | } | |
5208 | ||
5209 | /* This detaches a program to which we previously attached, using | |
5210 | inferior_ptid to identify the process. After this is done, GDB | |
5211 | can be used to debug some other program. We better not have left | |
5212 | any breakpoints in the target program or it'll die when it hits | |
5213 | one. */ | |
c906108c SS |
5214 | |
5215 | static void | |
de0d863e | 5216 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 5217 | { |
82f73884 | 5218 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5219 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5220 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5221 | int is_fork_parent; | |
c906108c SS |
5222 | |
5223 | if (args) | |
8a3fe4f8 | 5224 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 5225 | |
2d717e4f DJ |
5226 | if (!target_has_execution) |
5227 | error (_("No process to detach from.")); | |
5228 | ||
0f48b757 | 5229 | target_announce_detach (from_tty); |
7cee1e54 | 5230 | |
c906108c | 5231 | /* Tell the remote target to detach. */ |
de0d863e | 5232 | remote_detach_pid (pid); |
82f73884 | 5233 | |
8020350c DB |
5234 | /* Exit only if this is the only active inferior. */ |
5235 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5236 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5237 | |
de0d863e DB |
5238 | /* Check to see if we are detaching a fork parent. Note that if we |
5239 | are detaching a fork child, tp == NULL. */ | |
5240 | is_fork_parent = (tp != NULL | |
5241 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5242 | ||
5243 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5244 | breakpoints that should be available for the followed inferior. */ | |
5245 | if (!is_fork_parent) | |
bc1e6c81 | 5246 | target_mourn_inferior (inferior_ptid); |
de0d863e DB |
5247 | else |
5248 | { | |
5249 | inferior_ptid = null_ptid; | |
5250 | detach_inferior (pid); | |
5251 | } | |
2d717e4f DJ |
5252 | } |
5253 | ||
5254 | static void | |
52554a0e | 5255 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5256 | { |
de0d863e | 5257 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
5258 | } |
5259 | ||
5260 | static void | |
52554a0e | 5261 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5262 | { |
de0d863e DB |
5263 | remote_detach_1 (args, from_tty); |
5264 | } | |
5265 | ||
5266 | /* Target follow-fork function for remote targets. On entry, and | |
5267 | at return, the current inferior is the fork parent. | |
5268 | ||
5269 | Note that although this is currently only used for extended-remote, | |
5270 | it is named remote_follow_fork in anticipation of using it for the | |
5271 | remote target as well. */ | |
5272 | ||
5273 | static int | |
5274 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5275 | int detach_fork) | |
5276 | { | |
5277 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5278 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5279 | |
c269dbdb DB |
5280 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5281 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5282 | { |
5283 | /* When following the parent and detaching the child, we detach | |
5284 | the child here. For the case of following the child and | |
5285 | detaching the parent, the detach is done in the target- | |
5286 | independent follow fork code in infrun.c. We can't use | |
5287 | target_detach when detaching an unfollowed child because | |
5288 | the client side doesn't know anything about the child. */ | |
5289 | if (detach_fork && !follow_child) | |
5290 | { | |
5291 | /* Detach the fork child. */ | |
5292 | ptid_t child_ptid; | |
5293 | pid_t child_pid; | |
5294 | ||
5295 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5296 | child_pid = ptid_get_pid (child_ptid); | |
5297 | ||
5298 | remote_detach_pid (child_pid); | |
5299 | detach_inferior (child_pid); | |
5300 | } | |
5301 | } | |
5302 | return 0; | |
c906108c SS |
5303 | } |
5304 | ||
94585166 DB |
5305 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5306 | in the program space of the new inferior. On entry and at return the | |
5307 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5308 | inferior, which may be the same as the exec'ing inferior unless | |
5309 | follow-exec-mode is "new". */ | |
5310 | ||
5311 | static void | |
5312 | remote_follow_exec (struct target_ops *ops, | |
5313 | struct inferior *inf, char *execd_pathname) | |
5314 | { | |
5315 | /* We know that this is a target file name, so if it has the "target:" | |
5316 | prefix we strip it off before saving it in the program space. */ | |
5317 | if (is_target_filename (execd_pathname)) | |
5318 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5319 | ||
5320 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5321 | } | |
5322 | ||
6ad8ae5c DJ |
5323 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5324 | ||
43ff13b4 | 5325 | static void |
fee354ee | 5326 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5327 | { |
43ff13b4 | 5328 | if (args) |
2d717e4f | 5329 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5330 | |
8020350c DB |
5331 | /* Make sure we unpush even the extended remote targets. Calling |
5332 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5333 | unpush if there is more than one inferior left. */ | |
5334 | unpush_target (target); | |
5335 | generic_mourn_inferior (); | |
2d717e4f | 5336 | |
43ff13b4 JM |
5337 | if (from_tty) |
5338 | puts_filtered ("Ending remote debugging.\n"); | |
5339 | } | |
5340 | ||
2d717e4f DJ |
5341 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5342 | be chatty about it. */ | |
5343 | ||
5344 | static void | |
20f796c9 GB |
5345 | extended_remote_attach (struct target_ops *target, const char *args, |
5346 | int from_tty) | |
2d717e4f DJ |
5347 | { |
5348 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5349 | int pid; |
96ef3384 | 5350 | char *wait_status = NULL; |
2d717e4f | 5351 | |
74164c56 | 5352 | pid = parse_pid_to_attach (args); |
2d717e4f | 5353 | |
74164c56 JK |
5354 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5355 | way as in other targets. */ | |
2d717e4f | 5356 | |
4082afcc | 5357 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5358 | error (_("This target does not support attaching to a process")); |
5359 | ||
7cee1e54 PA |
5360 | if (from_tty) |
5361 | { | |
5362 | char *exec_file = get_exec_file (0); | |
5363 | ||
5364 | if (exec_file) | |
5365 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5366 | target_pid_to_str (pid_to_ptid (pid))); | |
5367 | else | |
5368 | printf_unfiltered (_("Attaching to %s\n"), | |
5369 | target_pid_to_str (pid_to_ptid (pid))); | |
5370 | ||
5371 | gdb_flush (gdb_stdout); | |
5372 | } | |
5373 | ||
bba74b36 | 5374 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5375 | putpkt (rs->buf); |
5376 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5377 | ||
4082afcc PA |
5378 | switch (packet_ok (rs->buf, |
5379 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5380 | { |
4082afcc | 5381 | case PACKET_OK: |
6efcd9a8 | 5382 | if (!target_is_non_stop_p ()) |
74531fed PA |
5383 | { |
5384 | /* Save the reply for later. */ | |
224c3ddb | 5385 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5386 | strcpy (wait_status, rs->buf); |
5387 | } | |
5388 | else if (strcmp (rs->buf, "OK") != 0) | |
5389 | error (_("Attaching to %s failed with: %s"), | |
5390 | target_pid_to_str (pid_to_ptid (pid)), | |
5391 | rs->buf); | |
4082afcc PA |
5392 | break; |
5393 | case PACKET_UNKNOWN: | |
5394 | error (_("This target does not support attaching to a process")); | |
5395 | default: | |
5396 | error (_("Attaching to %s failed"), | |
5397 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5398 | } |
2d717e4f | 5399 | |
1b6e6f5c | 5400 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5401 | |
2d717e4f | 5402 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5403 | |
6efcd9a8 | 5404 | if (target_is_non_stop_p ()) |
bad34192 PA |
5405 | { |
5406 | struct thread_info *thread; | |
79d7f229 | 5407 | |
bad34192 | 5408 | /* Get list of threads. */ |
e8032dde | 5409 | remote_update_thread_list (target); |
82f73884 | 5410 | |
bad34192 PA |
5411 | thread = first_thread_of_process (pid); |
5412 | if (thread) | |
5413 | inferior_ptid = thread->ptid; | |
5414 | else | |
5415 | inferior_ptid = pid_to_ptid (pid); | |
5416 | ||
5417 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5418 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5419 | } |
74531fed | 5420 | else |
bad34192 PA |
5421 | { |
5422 | /* Now, if we have thread information, update inferior_ptid. */ | |
5423 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5424 | ||
5425 | /* Add the main thread to the thread list. */ | |
5426 | add_thread_silent (inferior_ptid); | |
5427 | } | |
c0a2216e | 5428 | |
96ef3384 UW |
5429 | /* Next, if the target can specify a description, read it. We do |
5430 | this before anything involving memory or registers. */ | |
5431 | target_find_description (); | |
5432 | ||
6efcd9a8 | 5433 | if (!target_is_non_stop_p ()) |
74531fed PA |
5434 | { |
5435 | /* Use the previously fetched status. */ | |
5436 | gdb_assert (wait_status != NULL); | |
5437 | ||
5438 | if (target_can_async_p ()) | |
5439 | { | |
722247f1 YQ |
5440 | struct notif_event *reply |
5441 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5442 | |
722247f1 | 5443 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5444 | |
6a3753b3 | 5445 | target_async (1); |
74531fed PA |
5446 | } |
5447 | else | |
5448 | { | |
5449 | gdb_assert (wait_status != NULL); | |
5450 | strcpy (rs->buf, wait_status); | |
5451 | rs->cached_wait_status = 1; | |
5452 | } | |
5453 | } | |
5454 | else | |
5455 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5456 | } |
5457 | ||
b9c1d481 AS |
5458 | /* Implementation of the to_post_attach method. */ |
5459 | ||
5460 | static void | |
5461 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5462 | { | |
6efcd9a8 PA |
5463 | /* Get text, data & bss offsets. */ |
5464 | get_offsets (); | |
5465 | ||
b9c1d481 AS |
5466 | /* In certain cases GDB might not have had the chance to start |
5467 | symbol lookup up until now. This could happen if the debugged | |
5468 | binary is not using shared libraries, the vsyscall page is not | |
5469 | present (on Linux) and the binary itself hadn't changed since the | |
5470 | debugging process was started. */ | |
5471 | if (symfile_objfile != NULL) | |
5472 | remote_check_symbols(); | |
5473 | } | |
5474 | ||
c906108c | 5475 | \f |
506fb367 DJ |
5476 | /* Check for the availability of vCont. This function should also check |
5477 | the response. */ | |
c906108c SS |
5478 | |
5479 | static void | |
6d820c5c | 5480 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5481 | { |
2e9f7625 | 5482 | char *buf; |
6d820c5c | 5483 | |
2e9f7625 DJ |
5484 | strcpy (rs->buf, "vCont?"); |
5485 | putpkt (rs->buf); | |
6d820c5c | 5486 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5487 | buf = rs->buf; |
c906108c | 5488 | |
506fb367 | 5489 | /* Make sure that the features we assume are supported. */ |
61012eef | 5490 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5491 | { |
5492 | char *p = &buf[5]; | |
750ce8d1 | 5493 | int support_c, support_C; |
506fb367 | 5494 | |
750ce8d1 YQ |
5495 | rs->supports_vCont.s = 0; |
5496 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5497 | support_c = 0; |
5498 | support_C = 0; | |
d458bd84 | 5499 | rs->supports_vCont.t = 0; |
c1e36e3e | 5500 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5501 | while (p && *p == ';') |
5502 | { | |
5503 | p++; | |
5504 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5505 | rs->supports_vCont.s = 1; |
506fb367 | 5506 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5507 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5508 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5509 | support_c = 1; | |
5510 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5511 | support_C = 1; | |
74531fed | 5512 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5513 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5514 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5515 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5516 | |
5517 | p = strchr (p, ';'); | |
5518 | } | |
c906108c | 5519 | |
750ce8d1 YQ |
5520 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5521 | BUF will make packet_ok disable the packet. */ | |
5522 | if (!support_c || !support_C) | |
506fb367 DJ |
5523 | buf[0] = 0; |
5524 | } | |
c906108c | 5525 | |
444abaca | 5526 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5527 | } |
c906108c | 5528 | |
0d8f58ca PA |
5529 | /* Helper function for building "vCont" resumptions. Write a |
5530 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5531 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5532 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5533 | resumed thread should be single-stepped and/or signalled. If PTID | |
5534 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5535 | represents a process, then all threads of the process are resumed; | |
5536 | the thread to be stepped and/or signalled is given in the global | |
5537 | INFERIOR_PTID. */ | |
5538 | ||
5539 | static char * | |
5540 | append_resumption (char *p, char *endp, | |
2ea28649 | 5541 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5542 | { |
5543 | struct remote_state *rs = get_remote_state (); | |
5544 | ||
a493e3e2 | 5545 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5546 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5547 | else if (step |
5548 | /* GDB is willing to range step. */ | |
5549 | && use_range_stepping | |
5550 | /* Target supports range stepping. */ | |
5551 | && rs->supports_vCont.r | |
5552 | /* We don't currently support range stepping multiple | |
5553 | threads with a wildcard (though the protocol allows it, | |
5554 | so stubs shouldn't make an active effort to forbid | |
5555 | it). */ | |
5556 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5557 | { | |
5558 | struct thread_info *tp; | |
5559 | ||
5560 | if (ptid_equal (ptid, minus_one_ptid)) | |
5561 | { | |
5562 | /* If we don't know about the target thread's tid, then | |
5563 | we're resuming magic_null_ptid (see caller). */ | |
5564 | tp = find_thread_ptid (magic_null_ptid); | |
5565 | } | |
5566 | else | |
5567 | tp = find_thread_ptid (ptid); | |
5568 | gdb_assert (tp != NULL); | |
5569 | ||
5570 | if (tp->control.may_range_step) | |
5571 | { | |
5572 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5573 | ||
5574 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5575 | phex_nz (tp->control.step_range_start, | |
5576 | addr_size), | |
5577 | phex_nz (tp->control.step_range_end, | |
5578 | addr_size)); | |
5579 | } | |
5580 | else | |
5581 | p += xsnprintf (p, endp - p, ";s"); | |
5582 | } | |
0d8f58ca PA |
5583 | else if (step) |
5584 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5585 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5586 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5587 | else | |
5588 | p += xsnprintf (p, endp - p, ";c"); | |
5589 | ||
5590 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5591 | { | |
5592 | ptid_t nptid; | |
5593 | ||
5594 | /* All (-1) threads of process. */ | |
ba348170 | 5595 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5596 | |
5597 | p += xsnprintf (p, endp - p, ":"); | |
5598 | p = write_ptid (p, endp, nptid); | |
5599 | } | |
5600 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5601 | { | |
5602 | p += xsnprintf (p, endp - p, ":"); | |
5603 | p = write_ptid (p, endp, ptid); | |
5604 | } | |
5605 | ||
5606 | return p; | |
5607 | } | |
5608 | ||
799a2abe PA |
5609 | /* Clear the thread's private info on resume. */ |
5610 | ||
5611 | static void | |
5612 | resume_clear_thread_private_info (struct thread_info *thread) | |
5613 | { | |
5614 | if (thread->priv != NULL) | |
5615 | { | |
5616 | thread->priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5617 | thread->priv->watch_data_address = 0; | |
5618 | } | |
5619 | } | |
5620 | ||
e5ef252a PA |
5621 | /* Append a vCont continue-with-signal action for threads that have a |
5622 | non-zero stop signal. */ | |
5623 | ||
5624 | static char * | |
5625 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5626 | { | |
5627 | struct thread_info *thread; | |
5628 | ||
034f788c | 5629 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5630 | if (ptid_match (thread->ptid, ptid) |
5631 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5632 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5633 | { |
5634 | p = append_resumption (p, endp, thread->ptid, | |
5635 | 0, thread->suspend.stop_signal); | |
5636 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5637 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5638 | } |
5639 | ||
5640 | return p; | |
5641 | } | |
5642 | ||
7b68ffbb PA |
5643 | /* Set the target running, using the packets that use Hc |
5644 | (c/s/C/S). */ | |
5645 | ||
5646 | static void | |
5647 | remote_resume_with_hc (struct target_ops *ops, | |
5648 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5649 | { | |
5650 | struct remote_state *rs = get_remote_state (); | |
5651 | struct thread_info *thread; | |
5652 | char *buf; | |
5653 | ||
5654 | rs->last_sent_signal = siggnal; | |
5655 | rs->last_sent_step = step; | |
5656 | ||
5657 | /* The c/s/C/S resume packets use Hc, so set the continue | |
5658 | thread. */ | |
5659 | if (ptid_equal (ptid, minus_one_ptid)) | |
5660 | set_continue_thread (any_thread_ptid); | |
5661 | else | |
5662 | set_continue_thread (ptid); | |
5663 | ||
5664 | ALL_NON_EXITED_THREADS (thread) | |
5665 | resume_clear_thread_private_info (thread); | |
5666 | ||
5667 | buf = rs->buf; | |
5668 | if (execution_direction == EXEC_REVERSE) | |
5669 | { | |
5670 | /* We don't pass signals to the target in reverse exec mode. */ | |
5671 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
5672 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
5673 | siggnal); | |
5674 | ||
5675 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
5676 | error (_("Remote reverse-step not supported.")); | |
5677 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
5678 | error (_("Remote reverse-continue not supported.")); | |
5679 | ||
5680 | strcpy (buf, step ? "bs" : "bc"); | |
5681 | } | |
5682 | else if (siggnal != GDB_SIGNAL_0) | |
5683 | { | |
5684 | buf[0] = step ? 'S' : 'C'; | |
5685 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5686 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5687 | buf[3] = '\0'; | |
5688 | } | |
5689 | else | |
5690 | strcpy (buf, step ? "s" : "c"); | |
5691 | ||
5692 | putpkt (buf); | |
5693 | } | |
5694 | ||
506fb367 DJ |
5695 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5696 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5697 | resumed thread should be single-stepped and/or signalled. If PTID |
5698 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5699 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5700 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5701 | |
7b68ffbb PA |
5702 | This function issues a strict subset of all possible vCont commands |
5703 | at the moment. */ | |
44eaed12 | 5704 | |
506fb367 | 5705 | static int |
7b68ffbb | 5706 | remote_resume_with_vcont (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5707 | { |
5708 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5709 | char *p; |
5710 | char *endp; | |
44eaed12 | 5711 | |
7b68ffbb PA |
5712 | /* No reverse execution actions defined for vCont. */ |
5713 | if (execution_direction == EXEC_REVERSE) | |
5714 | return 0; | |
5715 | ||
4082afcc | 5716 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5717 | remote_vcont_probe (rs); |
44eaed12 | 5718 | |
4082afcc | 5719 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5720 | return 0; |
44eaed12 | 5721 | |
82f73884 PA |
5722 | p = rs->buf; |
5723 | endp = rs->buf + get_remote_packet_size (); | |
5724 | ||
506fb367 DJ |
5725 | /* If we could generate a wider range of packets, we'd have to worry |
5726 | about overflowing BUF. Should there be a generic | |
5727 | "multi-part-packet" packet? */ | |
5728 | ||
0d8f58ca PA |
5729 | p += xsnprintf (p, endp - p, "vCont"); |
5730 | ||
79d7f229 | 5731 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5732 | { |
79d7f229 PA |
5733 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5734 | so we don't have any TID numbers the inferior will | |
5735 | understand. Make sure to only send forms that do not specify | |
5736 | a TID. */ | |
a9cbf802 | 5737 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5738 | } |
0d8f58ca | 5739 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5740 | { |
0d8f58ca PA |
5741 | /* Resume all threads (of all processes, or of a single |
5742 | process), with preference for INFERIOR_PTID. This assumes | |
5743 | inferior_ptid belongs to the set of all threads we are about | |
5744 | to resume. */ | |
a493e3e2 | 5745 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5746 | { |
0d8f58ca PA |
5747 | /* Step inferior_ptid, with or without signal. */ |
5748 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5749 | } |
0d8f58ca | 5750 | |
e5ef252a PA |
5751 | /* Also pass down any pending signaled resumption for other |
5752 | threads not the current. */ | |
5753 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5754 | ||
0d8f58ca | 5755 | /* And continue others without a signal. */ |
a493e3e2 | 5756 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5757 | } |
5758 | else | |
506fb367 DJ |
5759 | { |
5760 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5761 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5762 | } |
c906108c | 5763 | |
82f73884 PA |
5764 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5765 | putpkt (rs->buf); | |
506fb367 | 5766 | |
6efcd9a8 | 5767 | if (target_is_non_stop_p ()) |
74531fed PA |
5768 | { |
5769 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5770 | reply will be reported asynchronously by means of a `%Stop' | |
5771 | notification. */ | |
5772 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5773 | if (strcmp (rs->buf, "OK") != 0) | |
5774 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5775 | } | |
5776 | ||
506fb367 | 5777 | return 1; |
c906108c | 5778 | } |
43ff13b4 | 5779 | |
506fb367 DJ |
5780 | /* Tell the remote machine to resume. */ |
5781 | ||
43ff13b4 | 5782 | static void |
28439f5e | 5783 | remote_resume (struct target_ops *ops, |
2ea28649 | 5784 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5785 | { |
d01949b6 | 5786 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 5787 | |
85ad3aaf PA |
5788 | /* When connected in non-stop mode, the core resumes threads |
5789 | individually. Resuming remote threads directly in target_resume | |
5790 | would thus result in sending one packet per thread. Instead, to | |
5791 | minimize roundtrip latency, here we just store the resume | |
5792 | request; the actual remote resumption will be done in | |
5793 | target_commit_resume / remote_commit_resume, where we'll be able | |
5794 | to do vCont action coalescing. */ | |
5795 | if (target_is_non_stop_p () && execution_direction != EXEC_REVERSE) | |
5796 | { | |
5797 | struct private_thread_info *remote_thr; | |
5798 | ||
5799 | if (ptid_equal (minus_one_ptid, ptid) || ptid_is_pid (ptid)) | |
5800 | remote_thr = get_private_info_ptid (inferior_ptid); | |
5801 | else | |
5802 | remote_thr = get_private_info_ptid (ptid); | |
5803 | remote_thr->last_resume_step = step; | |
5804 | remote_thr->last_resume_sig = siggnal; | |
5805 | return; | |
5806 | } | |
5807 | ||
722247f1 YQ |
5808 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5809 | (explained in remote-notif.c:handle_notification) so | |
5810 | remote_notif_process is not called. We need find a place where | |
5811 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5812 | before resuming inferior, because inferior was stopped and no RSP | |
5813 | traffic at that moment. */ | |
6efcd9a8 | 5814 | if (!target_is_non_stop_p ()) |
5965e028 | 5815 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5816 | |
3a00c802 PA |
5817 | rs->last_resume_exec_dir = execution_direction; |
5818 | ||
7b68ffbb PA |
5819 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
5820 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
5821 | remote_resume_with_hc (ops, ptid, step, siggnal); | |
43ff13b4 | 5822 | |
2acceee2 | 5823 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5824 | with the event loop. NOTE: this is the one place where all the |
5825 | execution commands end up. We could alternatively do this in each | |
23860348 | 5826 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5827 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5828 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5829 | NOT asynchronously. */ |
362646f5 | 5830 | if (target_can_async_p ()) |
6a3753b3 | 5831 | target_async (1); |
e24a49d8 PA |
5832 | |
5833 | /* We've just told the target to resume. The remote server will | |
5834 | wait for the inferior to stop, and then send a stop reply. In | |
5835 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5836 | because the stub wouldn't be ready to process it. This applies |
5837 | only to the base all-stop protocol, however. In non-stop (which | |
5838 | only supports vCont), the stub replies with an "OK", and is | |
5839 | immediate able to process further serial input. */ | |
6efcd9a8 | 5840 | if (!target_is_non_stop_p ()) |
74531fed | 5841 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5842 | } |
85ad3aaf PA |
5843 | |
5844 | static void check_pending_events_prevent_wildcard_vcont | |
5845 | (int *may_global_wildcard_vcont); | |
5846 | static int is_pending_fork_parent_thread (struct thread_info *thread); | |
5847 | ||
5848 | /* Private per-inferior info for target remote processes. */ | |
5849 | ||
5850 | struct private_inferior | |
5851 | { | |
5852 | /* Whether we can send a wildcard vCont for this process. */ | |
5853 | int may_wildcard_vcont; | |
5854 | }; | |
5855 | ||
5856 | /* Structure used to track the construction of a vCont packet in the | |
5857 | outgoing packet buffer. This is used to send multiple vCont | |
5858 | packets if we have more actions than would fit a single packet. */ | |
5859 | ||
5860 | struct vcont_builder | |
5861 | { | |
5862 | /* Pointer to the first action. P points here if no action has been | |
5863 | appended yet. */ | |
5864 | char *first_action; | |
5865 | ||
5866 | /* Where the next action will be appended. */ | |
5867 | char *p; | |
5868 | ||
5869 | /* The end of the buffer. Must never write past this. */ | |
5870 | char *endp; | |
5871 | }; | |
5872 | ||
5873 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
5874 | ||
5875 | static void | |
5876 | vcont_builder_restart (struct vcont_builder *builder) | |
5877 | { | |
5878 | struct remote_state *rs = get_remote_state (); | |
5879 | ||
5880 | builder->p = rs->buf; | |
5881 | builder->endp = rs->buf + get_remote_packet_size (); | |
5882 | builder->p += xsnprintf (builder->p, builder->endp - builder->p, "vCont"); | |
5883 | builder->first_action = builder->p; | |
5884 | } | |
5885 | ||
5886 | /* If the vCont packet being built has any action, send it to the | |
5887 | remote end. */ | |
5888 | ||
5889 | static void | |
5890 | vcont_builder_flush (struct vcont_builder *builder) | |
5891 | { | |
5892 | struct remote_state *rs; | |
5893 | ||
5894 | if (builder->p == builder->first_action) | |
5895 | return; | |
5896 | ||
5897 | rs = get_remote_state (); | |
5898 | putpkt (rs->buf); | |
5899 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5900 | if (strcmp (rs->buf, "OK") != 0) | |
5901 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5902 | } | |
5903 | ||
5904 | /* The largest action is range-stepping, with its two addresses. This | |
5905 | is more than sufficient. If a new, bigger action is created, it'll | |
5906 | quickly trigger a failed assertion in append_resumption (and we'll | |
5907 | just bump this). */ | |
5908 | #define MAX_ACTION_SIZE 200 | |
5909 | ||
5910 | /* Append a new vCont action in the outgoing packet being built. If | |
5911 | the action doesn't fit the packet along with previous actions, push | |
5912 | what we've got so far to the remote end and start over a new vCont | |
5913 | packet (with the new action). */ | |
5914 | ||
5915 | static void | |
5916 | vcont_builder_push_action (struct vcont_builder *builder, | |
5917 | ptid_t ptid, int step, enum gdb_signal siggnal) | |
5918 | { | |
5919 | char buf[MAX_ACTION_SIZE + 1]; | |
5920 | char *endp; | |
5921 | size_t rsize; | |
5922 | ||
5923 | endp = append_resumption (buf, buf + sizeof (buf), | |
5924 | ptid, step, siggnal); | |
5925 | ||
5926 | /* Check whether this new action would fit in the vCont packet along | |
5927 | with previous actions. If not, send what we've got so far and | |
5928 | start a new vCont packet. */ | |
5929 | rsize = endp - buf; | |
5930 | if (rsize > builder->endp - builder->p) | |
5931 | { | |
5932 | vcont_builder_flush (builder); | |
5933 | vcont_builder_restart (builder); | |
5934 | ||
5935 | /* Should now fit. */ | |
5936 | gdb_assert (rsize <= builder->endp - builder->p); | |
5937 | } | |
5938 | ||
5939 | memcpy (builder->p, buf, rsize); | |
5940 | builder->p += rsize; | |
5941 | *builder->p = '\0'; | |
5942 | } | |
5943 | ||
5944 | /* to_commit_resume implementation. */ | |
5945 | ||
5946 | static void | |
5947 | remote_commit_resume (struct target_ops *ops) | |
5948 | { | |
5949 | struct remote_state *rs = get_remote_state (); | |
5950 | struct inferior *inf; | |
5951 | struct thread_info *tp; | |
5952 | int any_process_wildcard; | |
5953 | int may_global_wildcard_vcont; | |
5954 | struct vcont_builder vcont_builder; | |
5955 | ||
5956 | /* If connected in all-stop mode, we'd send the remote resume | |
5957 | request directly from remote_resume. Likewise if | |
5958 | reverse-debugging, as there are no defined vCont actions for | |
5959 | reverse execution. */ | |
5960 | if (!target_is_non_stop_p () || execution_direction == EXEC_REVERSE) | |
5961 | return; | |
5962 | ||
5963 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
5964 | instead of resuming all threads of each process individually. | |
5965 | However, if any thread of a process must remain halted, we can't | |
5966 | send wildcard resumes and must send one action per thread. | |
5967 | ||
5968 | Care must be taken to not resume threads/processes the server | |
5969 | side already told us are stopped, but the core doesn't know about | |
5970 | yet, because the events are still in the vStopped notification | |
5971 | queue. For example: | |
5972 | ||
5973 | #1 => vCont s:p1.1;c | |
5974 | #2 <= OK | |
5975 | #3 <= %Stopped T05 p1.1 | |
5976 | #4 => vStopped | |
5977 | #5 <= T05 p1.2 | |
5978 | #6 => vStopped | |
5979 | #7 <= OK | |
5980 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
5981 | #9 => vCont s:p1.1;c | |
5982 | ||
5983 | The last vCont above would resume thread p1.2 by mistake, because | |
5984 | the server has no idea that the event for p1.2 had not been | |
5985 | handled yet. | |
5986 | ||
5987 | The server side must similarly ignore resume actions for the | |
5988 | thread that has a pending %Stopped notification (and any other | |
5989 | threads with events pending), until GDB acks the notification | |
5990 | with vStopped. Otherwise, e.g., the following case is | |
5991 | mishandled: | |
5992 | ||
5993 | #1 => g (or any other packet) | |
5994 | #2 <= [registers] | |
5995 | #3 <= %Stopped T05 p1.2 | |
5996 | #4 => vCont s:p1.1;c | |
5997 | #5 <= OK | |
5998 | ||
5999 | Above, the server must not resume thread p1.2. GDB can't know | |
6000 | that p1.2 stopped until it acks the %Stopped notification, and | |
6001 | since from GDB's perspective all threads should be running, it | |
6002 | sends a "c" action. | |
6003 | ||
6004 | Finally, special care must also be given to handling fork/vfork | |
6005 | events. A (v)fork event actually tells us that two processes | |
6006 | stopped -- the parent and the child. Until we follow the fork, | |
6007 | we must not resume the child. Therefore, if we have a pending | |
6008 | fork follow, we must not send a global wildcard resume action | |
6009 | (vCont;c). We can still send process-wide wildcards though. */ | |
6010 | ||
6011 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6012 | may_global_wildcard_vcont = 1; | |
6013 | ||
6014 | /* And assume every process is individually wildcard-able too. */ | |
6015 | ALL_NON_EXITED_INFERIORS (inf) | |
6016 | { | |
6017 | if (inf->priv == NULL) | |
6018 | inf->priv = XNEW (struct private_inferior); | |
6019 | inf->priv->may_wildcard_vcont = 1; | |
6020 | } | |
6021 | ||
6022 | /* Check for any pending events (not reported or processed yet) and | |
6023 | disable process and global wildcard resumes appropriately. */ | |
6024 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6025 | ||
6026 | ALL_NON_EXITED_THREADS (tp) | |
6027 | { | |
6028 | /* If a thread of a process is not meant to be resumed, then we | |
6029 | can't wildcard that process. */ | |
6030 | if (!tp->executing) | |
6031 | { | |
6032 | tp->inf->priv->may_wildcard_vcont = 0; | |
6033 | ||
6034 | /* And if we can't wildcard a process, we can't wildcard | |
6035 | everything either. */ | |
6036 | may_global_wildcard_vcont = 0; | |
6037 | continue; | |
6038 | } | |
6039 | ||
6040 | /* If a thread is the parent of an unfollowed fork, then we | |
6041 | can't do a global wildcard, as that would resume the fork | |
6042 | child. */ | |
6043 | if (is_pending_fork_parent_thread (tp)) | |
6044 | may_global_wildcard_vcont = 0; | |
6045 | } | |
6046 | ||
6047 | /* Now let's build the vCont packet(s). Actions must be appended | |
6048 | from narrower to wider scopes (thread -> process -> global). If | |
6049 | we end up with too many actions for a single packet vcont_builder | |
6050 | flushes the current vCont packet to the remote side and starts a | |
6051 | new one. */ | |
6052 | vcont_builder_restart (&vcont_builder); | |
6053 | ||
6054 | /* Threads first. */ | |
6055 | ALL_NON_EXITED_THREADS (tp) | |
6056 | { | |
6057 | struct private_thread_info *remote_thr = tp->priv; | |
6058 | ||
6059 | if (!tp->executing || remote_thr->vcont_resumed) | |
6060 | continue; | |
6061 | ||
6062 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6063 | ||
6064 | if (!remote_thr->last_resume_step | |
6065 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
6066 | && tp->inf->priv->may_wildcard_vcont) | |
6067 | { | |
6068 | /* We'll send a wildcard resume instead. */ | |
6069 | remote_thr->vcont_resumed = 1; | |
6070 | continue; | |
6071 | } | |
6072 | ||
6073 | vcont_builder_push_action (&vcont_builder, tp->ptid, | |
6074 | remote_thr->last_resume_step, | |
6075 | remote_thr->last_resume_sig); | |
6076 | remote_thr->vcont_resumed = 1; | |
6077 | } | |
6078 | ||
6079 | /* Now check whether we can send any process-wide wildcard. This is | |
6080 | to avoid sending a global wildcard in the case nothing is | |
6081 | supposed to be resumed. */ | |
6082 | any_process_wildcard = 0; | |
6083 | ||
6084 | ALL_NON_EXITED_INFERIORS (inf) | |
6085 | { | |
6086 | if (inf->priv->may_wildcard_vcont) | |
6087 | { | |
6088 | any_process_wildcard = 1; | |
6089 | break; | |
6090 | } | |
6091 | } | |
6092 | ||
6093 | if (any_process_wildcard) | |
6094 | { | |
6095 | /* If all processes are wildcard-able, then send a single "c" | |
6096 | action, otherwise, send an "all (-1) threads of process" | |
6097 | continue action for each running process, if any. */ | |
6098 | if (may_global_wildcard_vcont) | |
6099 | { | |
6100 | vcont_builder_push_action (&vcont_builder, minus_one_ptid, | |
6101 | 0, GDB_SIGNAL_0); | |
6102 | } | |
6103 | else | |
6104 | { | |
6105 | ALL_NON_EXITED_INFERIORS (inf) | |
6106 | { | |
6107 | if (inf->priv->may_wildcard_vcont) | |
6108 | { | |
6109 | vcont_builder_push_action (&vcont_builder, | |
6110 | pid_to_ptid (inf->pid), | |
6111 | 0, GDB_SIGNAL_0); | |
6112 | } | |
6113 | } | |
6114 | } | |
6115 | } | |
6116 | ||
6117 | vcont_builder_flush (&vcont_builder); | |
6118 | } | |
6119 | ||
c906108c | 6120 | \f |
43ff13b4 | 6121 | |
74531fed PA |
6122 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6123 | thread, all threads of a remote process, or all threads of all | |
6124 | processes. */ | |
6125 | ||
6126 | static void | |
6127 | remote_stop_ns (ptid_t ptid) | |
6128 | { | |
6129 | struct remote_state *rs = get_remote_state (); | |
6130 | char *p = rs->buf; | |
6131 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 6132 | |
4082afcc | 6133 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
6134 | remote_vcont_probe (rs); |
6135 | ||
d458bd84 | 6136 | if (!rs->supports_vCont.t) |
74531fed PA |
6137 | error (_("Remote server does not support stopping threads")); |
6138 | ||
f91d3df5 PA |
6139 | if (ptid_equal (ptid, minus_one_ptid) |
6140 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
6141 | p += xsnprintf (p, endp - p, "vCont;t"); |
6142 | else | |
6143 | { | |
6144 | ptid_t nptid; | |
6145 | ||
74531fed PA |
6146 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6147 | ||
6148 | if (ptid_is_pid (ptid)) | |
6149 | /* All (-1) threads of process. */ | |
ba348170 | 6150 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
6151 | else |
6152 | { | |
6153 | /* Small optimization: if we already have a stop reply for | |
6154 | this thread, no use in telling the stub we want this | |
6155 | stopped. */ | |
6156 | if (peek_stop_reply (ptid)) | |
6157 | return; | |
6158 | ||
6159 | nptid = ptid; | |
6160 | } | |
6161 | ||
a9cbf802 | 6162 | write_ptid (p, endp, nptid); |
74531fed PA |
6163 | } |
6164 | ||
6165 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6166 | come in asynchronously by notification. */ | |
6167 | putpkt (rs->buf); | |
6168 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6169 | if (strcmp (rs->buf, "OK") != 0) | |
6170 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
6171 | } | |
6172 | ||
bfedc46a PA |
6173 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6174 | interrupt the remote target. It is undefined which thread of which | |
6175 | process reports the interrupt. */ | |
74531fed PA |
6176 | |
6177 | static void | |
de979965 | 6178 | remote_interrupt_as (void) |
74531fed PA |
6179 | { |
6180 | struct remote_state *rs = get_remote_state (); | |
6181 | ||
3a29589a DJ |
6182 | rs->ctrlc_pending_p = 1; |
6183 | ||
74531fed PA |
6184 | /* If the inferior is stopped already, but the core didn't know |
6185 | about it yet, just ignore the request. The cached wait status | |
6186 | will be collected in remote_wait. */ | |
6187 | if (rs->cached_wait_status) | |
6188 | return; | |
6189 | ||
9a7071a8 JB |
6190 | /* Send interrupt_sequence to remote target. */ |
6191 | send_interrupt_sequence (); | |
74531fed PA |
6192 | } |
6193 | ||
de979965 PA |
6194 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6195 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6196 | reports the interrupt. Throws an error if the packet is not |
6197 | supported by the server. */ | |
de979965 | 6198 | |
e42de8c7 | 6199 | static void |
de979965 PA |
6200 | remote_interrupt_ns (void) |
6201 | { | |
6202 | struct remote_state *rs = get_remote_state (); | |
6203 | char *p = rs->buf; | |
6204 | char *endp = rs->buf + get_remote_packet_size (); | |
6205 | ||
6206 | xsnprintf (p, endp - p, "vCtrlC"); | |
6207 | ||
6208 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6209 | come in asynchronously by notification. */ | |
6210 | putpkt (rs->buf); | |
6211 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6212 | ||
6213 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6214 | { | |
6215 | case PACKET_OK: | |
6216 | break; | |
6217 | case PACKET_UNKNOWN: | |
e42de8c7 | 6218 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
6219 | case PACKET_ERROR: |
6220 | error (_("Interrupting target failed: %s"), rs->buf); | |
6221 | } | |
de979965 PA |
6222 | } |
6223 | ||
bfedc46a | 6224 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6225 | |
c906108c | 6226 | static void |
1eab8a48 | 6227 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 6228 | { |
7a292a7a | 6229 | if (remote_debug) |
0f71a2f6 | 6230 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6231 | |
6efcd9a8 | 6232 | if (target_is_non_stop_p ()) |
74531fed | 6233 | remote_stop_ns (ptid); |
c906108c | 6234 | else |
bfedc46a PA |
6235 | { |
6236 | /* We don't currently have a way to transparently pause the | |
6237 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6238 | remote_interrupt_as (); |
bfedc46a PA |
6239 | } |
6240 | } | |
6241 | ||
6242 | /* Implement the to_interrupt function for the remote targets. */ | |
6243 | ||
6244 | static void | |
6245 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
6246 | { | |
e42de8c7 PA |
6247 | struct remote_state *rs = get_remote_state (); |
6248 | ||
bfedc46a PA |
6249 | if (remote_debug) |
6250 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6251 | ||
e42de8c7 PA |
6252 | if (target_is_non_stop_p ()) |
6253 | remote_interrupt_ns (); | |
bfedc46a | 6254 | else |
e42de8c7 | 6255 | remote_interrupt_as (); |
c906108c SS |
6256 | } |
6257 | ||
93692b58 PA |
6258 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6259 | ||
6260 | static void | |
6261 | remote_pass_ctrlc (struct target_ops *self) | |
6262 | { | |
6263 | struct remote_state *rs = get_remote_state (); | |
6264 | ||
6265 | if (remote_debug) | |
6266 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6267 | ||
6268 | /* If we're starting up, we're not fully synced yet. Quit | |
6269 | immediately. */ | |
6270 | if (rs->starting_up) | |
6271 | quit (); | |
6272 | /* If ^C has already been sent once, offer to disconnect. */ | |
6273 | else if (rs->ctrlc_pending_p) | |
6274 | interrupt_query (); | |
6275 | else | |
6276 | target_interrupt (inferior_ptid); | |
6277 | } | |
6278 | ||
c906108c SS |
6279 | /* Ask the user what to do when an interrupt is received. */ |
6280 | ||
6281 | static void | |
fba45db2 | 6282 | interrupt_query (void) |
c906108c | 6283 | { |
abc56d60 | 6284 | struct remote_state *rs = get_remote_state (); |
c906108c | 6285 | |
abc56d60 | 6286 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6287 | { |
abc56d60 PA |
6288 | if (query (_("The target is not responding to interrupt requests.\n" |
6289 | "Stop debugging it? "))) | |
74531fed | 6290 | { |
78a095c3 | 6291 | remote_unpush_target (); |
abc56d60 | 6292 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6293 | } |
6294 | } | |
abc56d60 PA |
6295 | else |
6296 | { | |
6297 | if (query (_("Interrupted while waiting for the program.\n" | |
6298 | "Give up waiting? "))) | |
6299 | quit (); | |
6300 | } | |
c906108c SS |
6301 | } |
6302 | ||
6426a772 JM |
6303 | /* Enable/disable target terminal ownership. Most targets can use |
6304 | terminal groups to control terminal ownership. Remote targets are | |
6305 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6306 | is required. */ |
6426a772 JM |
6307 | |
6308 | static void | |
d2f640d4 | 6309 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 6310 | { |
223ffa71 | 6311 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal::*() |
d9d2d8b6 PA |
6312 | idempotent. The event-loop GDB talking to an asynchronous target |
6313 | with a synchronous command calls this function from both | |
6314 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
6315 | transfer the terminal to the target when it shouldn't this guard | |
6316 | can go away. */ | |
6426a772 JM |
6317 | if (!remote_async_terminal_ours_p) |
6318 | return; | |
6426a772 | 6319 | remote_async_terminal_ours_p = 0; |
6426a772 JM |
6320 | /* NOTE: At this point we could also register our selves as the |
6321 | recipient of all input. Any characters typed could then be | |
23860348 | 6322 | passed on down to the target. */ |
6426a772 JM |
6323 | } |
6324 | ||
6325 | static void | |
e3594fd1 | 6326 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 6327 | { |
75c99385 | 6328 | /* See FIXME in remote_terminal_inferior. */ |
6426a772 JM |
6329 | if (remote_async_terminal_ours_p) |
6330 | return; | |
6426a772 JM |
6331 | remote_async_terminal_ours_p = 1; |
6332 | } | |
6333 | ||
176a6961 | 6334 | static void |
917317f4 | 6335 | remote_console_output (char *msg) |
c906108c SS |
6336 | { |
6337 | char *p; | |
6338 | ||
c5aa993b | 6339 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6340 | { |
6341 | char tb[2]; | |
6342 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6343 | |
c906108c SS |
6344 | tb[0] = c; |
6345 | tb[1] = 0; | |
43ff13b4 | 6346 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6347 | } |
00db5b94 PA |
6348 | gdb_flush (gdb_stdtarg); |
6349 | } | |
74531fed | 6350 | |
74531fed PA |
6351 | DEF_VEC_O(cached_reg_t); |
6352 | ||
722247f1 | 6353 | typedef struct stop_reply |
74531fed | 6354 | { |
722247f1 | 6355 | struct notif_event base; |
74531fed | 6356 | |
722247f1 | 6357 | /* The identifier of the thread about this event */ |
74531fed PA |
6358 | ptid_t ptid; |
6359 | ||
340e3c99 | 6360 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6361 | connection, represented by a remote_state object, is closed, |
6362 | all the associated stop_reply events should be released. */ | |
6363 | struct remote_state *rs; | |
6364 | ||
74531fed PA |
6365 | struct target_waitstatus ws; |
6366 | ||
15148d6a PA |
6367 | /* Expedited registers. This makes remote debugging a bit more |
6368 | efficient for those targets that provide critical registers as | |
6369 | part of their normal status mechanism (as another roundtrip to | |
6370 | fetch them is avoided). */ | |
74531fed PA |
6371 | VEC(cached_reg_t) *regcache; |
6372 | ||
f7e6eed5 PA |
6373 | enum target_stop_reason stop_reason; |
6374 | ||
74531fed PA |
6375 | CORE_ADDR watch_data_address; |
6376 | ||
dc146f7c | 6377 | int core; |
722247f1 | 6378 | } *stop_reply_p; |
a744cf53 | 6379 | |
722247f1 YQ |
6380 | DECLARE_QUEUE_P (stop_reply_p); |
6381 | DEFINE_QUEUE_P (stop_reply_p); | |
6382 | /* The list of already fetched and acknowledged stop events. This | |
6383 | queue is used for notification Stop, and other notifications | |
6384 | don't need queue for their events, because the notification events | |
6385 | of Stop can't be consumed immediately, so that events should be | |
6386 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6387 | time. Other notifications can consume their events immediately, | |
6388 | so queue is not needed for them. */ | |
6389 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6390 | |
6391 | static void | |
6392 | stop_reply_xfree (struct stop_reply *r) | |
6393 | { | |
f48ff2a7 | 6394 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6395 | } |
6396 | ||
221e1a37 PA |
6397 | /* Return the length of the stop reply queue. */ |
6398 | ||
6399 | static int | |
6400 | stop_reply_queue_length (void) | |
6401 | { | |
6402 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6403 | } | |
6404 | ||
722247f1 YQ |
6405 | static void |
6406 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6407 | struct notif_event *event) | |
6408 | { | |
6409 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6410 | } | |
6411 | ||
6412 | static void | |
6413 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6414 | struct notif_event *event) | |
6415 | { | |
6416 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6417 | ||
6418 | /* acknowledge */ | |
f5c4fcd9 | 6419 | putpkt (self->ack_command); |
722247f1 YQ |
6420 | |
6421 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6422 | /* We got an unknown stop reply. */ | |
6423 | error (_("Unknown stop reply")); | |
6424 | ||
6425 | push_stop_reply (stop_reply); | |
6426 | } | |
6427 | ||
6428 | static int | |
6429 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6430 | { | |
6431 | /* We can't get pending events in remote_notif_process for | |
6432 | notification stop, and we have to do this in remote_wait_ns | |
6433 | instead. If we fetch all queued events from stub, remote stub | |
6434 | may exit and we have no chance to process them back in | |
6435 | remote_wait_ns. */ | |
6436 | mark_async_event_handler (remote_async_inferior_event_token); | |
6437 | return 0; | |
6438 | } | |
6439 | ||
6440 | static void | |
6441 | stop_reply_dtr (struct notif_event *event) | |
6442 | { | |
6443 | struct stop_reply *r = (struct stop_reply *) event; | |
d1dff226 AH |
6444 | cached_reg_t *reg; |
6445 | int ix; | |
6446 | ||
6447 | for (ix = 0; | |
6448 | VEC_iterate (cached_reg_t, r->regcache, ix, reg); | |
6449 | ix++) | |
6450 | xfree (reg->data); | |
722247f1 YQ |
6451 | |
6452 | VEC_free (cached_reg_t, r->regcache); | |
6453 | } | |
6454 | ||
6455 | static struct notif_event * | |
6456 | remote_notif_stop_alloc_reply (void) | |
6457 | { | |
8d749320 SM |
6458 | /* We cast to a pointer to the "base class". */ |
6459 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6460 | |
6461 | r->dtr = stop_reply_dtr; | |
6462 | ||
6463 | return r; | |
6464 | } | |
6465 | ||
6466 | /* A client of notification Stop. */ | |
6467 | ||
6468 | struct notif_client notif_client_stop = | |
6469 | { | |
6470 | "Stop", | |
6471 | "vStopped", | |
6472 | remote_notif_stop_parse, | |
6473 | remote_notif_stop_ack, | |
6474 | remote_notif_stop_can_get_pending_events, | |
6475 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6476 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6477 | }; |
6478 | ||
6479 | /* A parameter to pass data in and out. */ | |
6480 | ||
6481 | struct queue_iter_param | |
6482 | { | |
6483 | void *input; | |
6484 | struct stop_reply *output; | |
6485 | }; | |
6486 | ||
85ad3aaf | 6487 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6488 | the pid of the process that owns the threads we want to check, or |
6489 | -1 if we want to check all threads. */ | |
6490 | ||
6491 | static int | |
6492 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6493 | ptid_t thread_ptid) | |
6494 | { | |
6495 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6496 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6497 | { | |
6498 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6499 | return 1; | |
6500 | } | |
6501 | ||
6502 | return 0; | |
6503 | } | |
6504 | ||
85ad3aaf PA |
6505 | /* Return the thread's pending status used to determine whether the |
6506 | thread is a fork parent stopped at a fork event. */ | |
6507 | ||
6508 | static struct target_waitstatus * | |
6509 | thread_pending_fork_status (struct thread_info *thread) | |
6510 | { | |
6511 | if (thread->suspend.waitstatus_pending_p) | |
6512 | return &thread->suspend.waitstatus; | |
6513 | else | |
6514 | return &thread->pending_follow; | |
6515 | } | |
6516 | ||
6517 | /* Determine if THREAD is a pending fork parent thread. */ | |
6518 | ||
6519 | static int | |
6520 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6521 | { | |
6522 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6523 | int pid = -1; | |
6524 | ||
6525 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6526 | } | |
6527 | ||
cbb8991c DB |
6528 | /* Check whether EVENT is a fork event, and if it is, remove the |
6529 | fork child from the context list passed in DATA. */ | |
6530 | ||
6531 | static int | |
6532 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6533 | QUEUE_ITER (stop_reply_p) *iter, | |
6534 | stop_reply_p event, | |
6535 | void *data) | |
6536 | { | |
19ba03f4 SM |
6537 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6538 | struct threads_listing_context *context | |
6539 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6540 | |
6541 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6542 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6543 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6544 | threads_listing_context_remove (&event->ws, context); | |
cbb8991c DB |
6545 | |
6546 | return 1; | |
6547 | } | |
6548 | ||
6549 | /* If CONTEXT contains any fork child threads that have not been | |
6550 | reported yet, remove them from the CONTEXT list. If such a | |
6551 | thread exists it is because we are stopped at a fork catchpoint | |
6552 | and have not yet called follow_fork, which will set up the | |
6553 | host-side data structures for the new process. */ | |
6554 | ||
6555 | static void | |
6556 | remove_new_fork_children (struct threads_listing_context *context) | |
6557 | { | |
6558 | struct thread_info * thread; | |
6559 | int pid = -1; | |
6560 | struct notif_client *notif = ¬if_client_stop; | |
6561 | struct queue_iter_param param; | |
6562 | ||
6563 | /* For any threads stopped at a fork event, remove the corresponding | |
6564 | fork child threads from the CONTEXT list. */ | |
6565 | ALL_NON_EXITED_THREADS (thread) | |
6566 | { | |
85ad3aaf | 6567 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6568 | |
6569 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
6570 | { | |
6571 | threads_listing_context_remove (ws, context); | |
6572 | } | |
6573 | } | |
6574 | ||
6575 | /* Check for any pending fork events (not reported or processed yet) | |
6576 | in process PID and remove those fork child threads from the | |
6577 | CONTEXT list as well. */ | |
6578 | remote_notif_get_pending_events (notif); | |
6579 | param.input = context; | |
6580 | param.output = NULL; | |
6581 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6582 | remove_child_of_pending_fork, ¶m); | |
6583 | } | |
6584 | ||
85ad3aaf PA |
6585 | /* Check whether EVENT would prevent a global or process wildcard |
6586 | vCont action. */ | |
6587 | ||
6588 | static int | |
6589 | check_pending_event_prevents_wildcard_vcont_callback | |
6590 | (QUEUE (stop_reply_p) *q, | |
6591 | QUEUE_ITER (stop_reply_p) *iter, | |
6592 | stop_reply_p event, | |
6593 | void *data) | |
6594 | { | |
6595 | struct inferior *inf; | |
6596 | int *may_global_wildcard_vcont = (int *) data; | |
6597 | ||
6598 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6599 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6600 | return 1; | |
6601 | ||
6602 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6603 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6604 | *may_global_wildcard_vcont = 0; | |
6605 | ||
6606 | inf = find_inferior_ptid (event->ptid); | |
6607 | ||
6608 | /* This may be the first time we heard about this process. | |
6609 | Regardless, we must not do a global wildcard resume, otherwise | |
6610 | we'd resume this process too. */ | |
6611 | *may_global_wildcard_vcont = 0; | |
6612 | if (inf != NULL) | |
6613 | inf->priv->may_wildcard_vcont = 0; | |
6614 | ||
6615 | return 1; | |
6616 | } | |
6617 | ||
6618 | /* Check whether any event pending in the vStopped queue would prevent | |
6619 | a global or process wildcard vCont action. Clear | |
6620 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6621 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6622 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6623 | ||
6624 | static void | |
6625 | check_pending_events_prevent_wildcard_vcont (int *may_global_wildcard) | |
6626 | { | |
6627 | struct notif_client *notif = ¬if_client_stop; | |
6628 | ||
6629 | remote_notif_get_pending_events (notif); | |
6630 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6631 | check_pending_event_prevents_wildcard_vcont_callback, | |
6632 | may_global_wildcard); | |
6633 | } | |
6634 | ||
f48ff2a7 YQ |
6635 | /* Remove stop replies in the queue if its pid is equal to the given |
6636 | inferior's pid. */ | |
722247f1 YQ |
6637 | |
6638 | static int | |
f48ff2a7 YQ |
6639 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6640 | QUEUE_ITER (stop_reply_p) *iter, | |
6641 | stop_reply_p event, | |
6642 | void *data) | |
722247f1 | 6643 | { |
19ba03f4 SM |
6644 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6645 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6646 | |
f48ff2a7 | 6647 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6648 | { |
6649 | stop_reply_xfree (event); | |
6650 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6651 | } | |
6652 | ||
6653 | return 1; | |
6654 | } | |
6655 | ||
f48ff2a7 | 6656 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6657 | |
74531fed | 6658 | static void |
5f4cf0bb | 6659 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6660 | { |
722247f1 | 6661 | struct queue_iter_param param; |
f48ff2a7 YQ |
6662 | struct stop_reply *reply; |
6663 | struct remote_state *rs = get_remote_state (); | |
6664 | struct remote_notif_state *rns = rs->notif_state; | |
6665 | ||
6666 | /* This function can be notified when an inferior exists. When the | |
6667 | target is not remote, the notification state is NULL. */ | |
6668 | if (rs->remote_desc == NULL) | |
6669 | return; | |
6670 | ||
6671 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6672 | |
74531fed | 6673 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6674 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6675 | { |
722247f1 | 6676 | stop_reply_xfree (reply); |
f48ff2a7 | 6677 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6678 | } |
c906108c | 6679 | |
722247f1 YQ |
6680 | param.input = inf; |
6681 | param.output = NULL; | |
74531fed PA |
6682 | /* Discard the stop replies we have already pulled with |
6683 | vStopped. */ | |
722247f1 | 6684 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6685 | remove_stop_reply_for_inferior, ¶m); |
6686 | } | |
6687 | ||
bcc75809 YQ |
6688 | /* If its remote state is equal to the given remote state, |
6689 | remove EVENT from the stop reply queue. */ | |
6690 | ||
6691 | static int | |
6692 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6693 | QUEUE_ITER (stop_reply_p) *iter, | |
6694 | stop_reply_p event, | |
6695 | void *data) | |
6696 | { | |
19ba03f4 SM |
6697 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6698 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6699 | |
6700 | if (event->rs == rs) | |
6701 | { | |
6702 | stop_reply_xfree (event); | |
6703 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6704 | } | |
6705 | ||
6706 | return 1; | |
6707 | } | |
6708 | ||
6709 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6710 | |
6711 | static void | |
bcc75809 | 6712 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6713 | { |
6714 | struct queue_iter_param param; | |
6715 | ||
bcc75809 | 6716 | param.input = rs; |
f48ff2a7 YQ |
6717 | param.output = NULL; |
6718 | /* Discard the stop replies we have already pulled with | |
6719 | vStopped. */ | |
6720 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6721 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6722 | } |
74531fed | 6723 | |
722247f1 YQ |
6724 | /* A parameter to pass data in and out. */ |
6725 | ||
6726 | static int | |
6727 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6728 | QUEUE_ITER (stop_reply_p) *iter, | |
6729 | stop_reply_p event, | |
6730 | void *data) | |
6731 | { | |
19ba03f4 SM |
6732 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6733 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6734 | |
6735 | if (ptid_match (event->ptid, *ptid)) | |
6736 | { | |
6737 | param->output = event; | |
6738 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6739 | return 0; | |
c8e38a49 | 6740 | } |
722247f1 YQ |
6741 | |
6742 | return 1; | |
74531fed | 6743 | } |
43ff13b4 | 6744 | |
722247f1 YQ |
6745 | /* Remove the first reply in 'stop_reply_queue' which matches |
6746 | PTID. */ | |
2e9f7625 | 6747 | |
722247f1 YQ |
6748 | static struct stop_reply * |
6749 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6750 | { |
722247f1 YQ |
6751 | struct queue_iter_param param; |
6752 | ||
6753 | param.input = &ptid; | |
6754 | param.output = NULL; | |
6755 | ||
6756 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6757 | remote_notif_remove_once_on_match, ¶m); | |
6758 | if (notif_debug) | |
6759 | fprintf_unfiltered (gdb_stdlog, | |
6760 | "notif: discard queued event: 'Stop' in %s\n", | |
6761 | target_pid_to_str (ptid)); | |
a744cf53 | 6762 | |
722247f1 | 6763 | return param.output; |
74531fed | 6764 | } |
75c99385 | 6765 | |
74531fed PA |
6766 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6767 | remove it from the queue, and return it. Returns NULL if none is | |
6768 | found. If there are still queued events left to process, tell the | |
6769 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6770 | |
74531fed PA |
6771 | static struct stop_reply * |
6772 | queued_stop_reply (ptid_t ptid) | |
6773 | { | |
722247f1 | 6774 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6775 | |
722247f1 | 6776 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6777 | /* There's still at least an event left. */ |
6778 | mark_async_event_handler (remote_async_inferior_event_token); | |
6779 | ||
722247f1 | 6780 | return r; |
74531fed PA |
6781 | } |
6782 | ||
6783 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6784 | know that we now have at least one queued event left to pass to the | |
6785 | core side, tell the event loop to get back to target_wait soon. */ | |
6786 | ||
6787 | static void | |
6788 | push_stop_reply (struct stop_reply *new_event) | |
6789 | { | |
722247f1 | 6790 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6791 | |
722247f1 YQ |
6792 | if (notif_debug) |
6793 | fprintf_unfiltered (gdb_stdlog, | |
6794 | "notif: push 'Stop' %s to queue %d\n", | |
6795 | target_pid_to_str (new_event->ptid), | |
6796 | QUEUE_length (stop_reply_p, | |
6797 | stop_reply_queue)); | |
74531fed PA |
6798 | |
6799 | mark_async_event_handler (remote_async_inferior_event_token); | |
6800 | } | |
6801 | ||
722247f1 YQ |
6802 | static int |
6803 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6804 | QUEUE_ITER (stop_reply_p) *iter, | |
6805 | struct stop_reply *event, | |
6806 | void *data) | |
6807 | { | |
19ba03f4 | 6808 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6809 | |
6810 | return !(ptid_equal (*ptid, event->ptid) | |
6811 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6812 | } | |
6813 | ||
74531fed PA |
6814 | /* Returns true if we have a stop reply for PTID. */ |
6815 | ||
6816 | static int | |
6817 | peek_stop_reply (ptid_t ptid) | |
6818 | { | |
722247f1 YQ |
6819 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6820 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6821 | } |
6822 | ||
26d56a93 SL |
6823 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6824 | starting with P and ending with PEND matches PREFIX. */ | |
6825 | ||
6826 | static int | |
6827 | strprefix (const char *p, const char *pend, const char *prefix) | |
6828 | { | |
6829 | for ( ; p < pend; p++, prefix++) | |
6830 | if (*p != *prefix) | |
6831 | return 0; | |
6832 | return *prefix == '\0'; | |
6833 | } | |
6834 | ||
74531fed PA |
6835 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6836 | result is stored in EVENT, or throws an error. */ | |
6837 | ||
6838 | static void | |
6839 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6840 | { | |
6841 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6842 | ULONGEST addr; | |
6843 | char *p; | |
94585166 | 6844 | int skipregs = 0; |
74531fed PA |
6845 | |
6846 | event->ptid = null_ptid; | |
bcc75809 | 6847 | event->rs = get_remote_state (); |
74531fed PA |
6848 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6849 | event->ws.value.integer = 0; | |
f7e6eed5 | 6850 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6851 | event->regcache = NULL; |
dc146f7c | 6852 | event->core = -1; |
74531fed PA |
6853 | |
6854 | switch (buf[0]) | |
6855 | { | |
6856 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6857 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6858 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6859 | ss = signal number | |
6860 | n... = register number | |
6861 | r... = register contents | |
6862 | */ | |
6863 | ||
6864 | p = &buf[3]; /* after Txx */ | |
6865 | while (*p) | |
6866 | { | |
6867 | char *p1; | |
cea39f65 | 6868 | int fieldsize; |
43ff13b4 | 6869 | |
1f10ba14 PA |
6870 | p1 = strchr (p, ':'); |
6871 | if (p1 == NULL) | |
6872 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6873 | Packet: '%s'\n"), | |
6874 | p, buf); | |
6875 | if (p == p1) | |
6876 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6877 | Packet: '%s'\n"), | |
6878 | p, buf); | |
3c3bea1c | 6879 | |
1f10ba14 PA |
6880 | /* Some "registers" are actually extended stop information. |
6881 | Note if you're adding a new entry here: GDB 7.9 and | |
6882 | earlier assume that all register "numbers" that start | |
6883 | with an hex digit are real register numbers. Make sure | |
6884 | the server only sends such a packet if it knows the | |
6885 | client understands it. */ | |
c8e38a49 | 6886 | |
26d56a93 | 6887 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6888 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6889 | else if (strprefix (p, p1, "syscall_entry")) |
6890 | { | |
6891 | ULONGEST sysno; | |
6892 | ||
6893 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6894 | p = unpack_varlen_hex (++p1, &sysno); | |
6895 | event->ws.value.syscall_number = (int) sysno; | |
6896 | } | |
6897 | else if (strprefix (p, p1, "syscall_return")) | |
6898 | { | |
6899 | ULONGEST sysno; | |
6900 | ||
6901 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6902 | p = unpack_varlen_hex (++p1, &sysno); | |
6903 | event->ws.value.syscall_number = (int) sysno; | |
6904 | } | |
26d56a93 SL |
6905 | else if (strprefix (p, p1, "watch") |
6906 | || strprefix (p, p1, "rwatch") | |
6907 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6908 | { |
f7e6eed5 | 6909 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6910 | p = unpack_varlen_hex (++p1, &addr); |
6911 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6912 | } |
26d56a93 | 6913 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6914 | { |
6915 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6916 | ||
6917 | /* Make sure the stub doesn't forget to indicate support | |
6918 | with qSupported. */ | |
6919 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6920 | error (_("Unexpected swbreak stop reason")); | |
6921 | ||
6922 | /* The value part is documented as "must be empty", | |
6923 | though we ignore it, in case we ever decide to make | |
6924 | use of it in a backward compatible way. */ | |
8424cc97 | 6925 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6926 | } |
26d56a93 | 6927 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6928 | { |
6929 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6930 | ||
6931 | /* Make sure the stub doesn't forget to indicate support | |
6932 | with qSupported. */ | |
6933 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6934 | error (_("Unexpected hwbreak stop reason")); | |
6935 | ||
6936 | /* See above. */ | |
8424cc97 | 6937 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6938 | } |
26d56a93 | 6939 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6940 | { |
1f10ba14 | 6941 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 6942 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6943 | } |
26d56a93 | 6944 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6945 | { |
6946 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6947 | /* p1 will indicate "begin" or "end", but it makes | |
6948 | no difference for now, so ignore it. */ | |
8424cc97 | 6949 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6950 | } |
26d56a93 | 6951 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6952 | { |
6953 | ULONGEST c; | |
a744cf53 | 6954 | |
1f10ba14 PA |
6955 | p = unpack_varlen_hex (++p1, &c); |
6956 | event->core = c; | |
cea39f65 | 6957 | } |
26d56a93 | 6958 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6959 | { |
6960 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6961 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6962 | } | |
26d56a93 | 6963 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6964 | { |
6965 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6966 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6967 | } | |
26d56a93 | 6968 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6969 | { |
6970 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 6971 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 6972 | } |
6ab24463 | 6973 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6974 | { |
6975 | ULONGEST ignored; | |
6976 | char pathname[PATH_MAX]; | |
6977 | int pathlen; | |
6978 | ||
6979 | /* Determine the length of the execd pathname. */ | |
6980 | p = unpack_varlen_hex (++p1, &ignored); | |
6981 | pathlen = (p - p1) / 2; | |
6982 | ||
6983 | /* Save the pathname for event reporting and for | |
6984 | the next run command. */ | |
6985 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6986 | pathname[pathlen] = '\0'; | |
6987 | ||
6988 | /* This is freed during event handling. */ | |
6989 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6990 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6991 | ||
6992 | /* Skip the registers included in this packet, since | |
6993 | they may be for an architecture different from the | |
6994 | one used by the original program. */ | |
6995 | skipregs = 1; | |
6996 | } | |
65706a29 PA |
6997 | else if (strprefix (p, p1, "create")) |
6998 | { | |
6999 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7000 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7001 | } |
cea39f65 MS |
7002 | else |
7003 | { | |
1f10ba14 PA |
7004 | ULONGEST pnum; |
7005 | char *p_temp; | |
7006 | ||
94585166 DB |
7007 | if (skipregs) |
7008 | { | |
8424cc97 | 7009 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7010 | p++; |
7011 | continue; | |
7012 | } | |
7013 | ||
1f10ba14 PA |
7014 | /* Maybe a real ``P'' register number. */ |
7015 | p_temp = unpack_varlen_hex (p, &pnum); | |
7016 | /* If the first invalid character is the colon, we got a | |
7017 | register number. Otherwise, it's an unknown stop | |
7018 | reason. */ | |
7019 | if (p_temp == p1) | |
7020 | { | |
7021 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
7022 | cached_reg_t cached_reg; | |
d1dff226 | 7023 | struct gdbarch *gdbarch = target_gdbarch (); |
43ff13b4 | 7024 | |
1f10ba14 PA |
7025 | if (reg == NULL) |
7026 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7027 | Packet: '%s'\n"), |
1f10ba14 | 7028 | hex_string (pnum), p, buf); |
c8e38a49 | 7029 | |
1f10ba14 | 7030 | cached_reg.num = reg->regnum; |
d1dff226 AH |
7031 | cached_reg.data = (gdb_byte *) |
7032 | xmalloc (register_size (gdbarch, reg->regnum)); | |
4100683b | 7033 | |
1f10ba14 PA |
7034 | p = p1 + 1; |
7035 | fieldsize = hex2bin (p, cached_reg.data, | |
d1dff226 | 7036 | register_size (gdbarch, reg->regnum)); |
1f10ba14 | 7037 | p += 2 * fieldsize; |
d1dff226 | 7038 | if (fieldsize < register_size (gdbarch, reg->regnum)) |
1f10ba14 | 7039 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7040 | |
1f10ba14 PA |
7041 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
7042 | } | |
7043 | else | |
7044 | { | |
7045 | /* Not a number. Silently skip unknown optional | |
7046 | info. */ | |
8424cc97 | 7047 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7048 | } |
cea39f65 | 7049 | } |
c8e38a49 | 7050 | |
cea39f65 MS |
7051 | if (*p != ';') |
7052 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7053 | buf, p); | |
7054 | ++p; | |
7055 | } | |
5b5596ff PA |
7056 | |
7057 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7058 | break; | |
7059 | ||
c8e38a49 PA |
7060 | /* fall through */ |
7061 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7062 | { |
7063 | int sig; | |
7064 | ||
7065 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7066 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7067 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7068 | event->ws.value.sig = (enum gdb_signal) sig; | |
7069 | else | |
7070 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7071 | } | |
c8e38a49 | 7072 | break; |
65706a29 PA |
7073 | case 'w': /* Thread exited. */ |
7074 | { | |
7075 | char *p; | |
7076 | ULONGEST value; | |
7077 | ||
7078 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7079 | p = unpack_varlen_hex (&buf[1], &value); | |
7080 | event->ws.value.integer = value; | |
7081 | if (*p != ';') | |
7082 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7083 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7084 | break; |
7085 | } | |
c8e38a49 PA |
7086 | case 'W': /* Target exited. */ |
7087 | case 'X': | |
7088 | { | |
7089 | char *p; | |
7090 | int pid; | |
7091 | ULONGEST value; | |
82f73884 | 7092 | |
c8e38a49 PA |
7093 | /* GDB used to accept only 2 hex chars here. Stubs should |
7094 | only send more if they detect GDB supports multi-process | |
7095 | support. */ | |
7096 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7097 | |
c8e38a49 PA |
7098 | if (buf[0] == 'W') |
7099 | { | |
7100 | /* The remote process exited. */ | |
74531fed PA |
7101 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7102 | event->ws.value.integer = value; | |
c8e38a49 PA |
7103 | } |
7104 | else | |
7105 | { | |
7106 | /* The remote process exited with a signal. */ | |
74531fed | 7107 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7108 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7109 | event->ws.value.sig = (enum gdb_signal) value; | |
7110 | else | |
7111 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7112 | } |
82f73884 | 7113 | |
c8e38a49 PA |
7114 | /* If no process is specified, assume inferior_ptid. */ |
7115 | pid = ptid_get_pid (inferior_ptid); | |
7116 | if (*p == '\0') | |
7117 | ; | |
7118 | else if (*p == ';') | |
7119 | { | |
7120 | p++; | |
7121 | ||
0b24eb2d | 7122 | if (*p == '\0') |
82f73884 | 7123 | ; |
61012eef | 7124 | else if (startswith (p, "process:")) |
82f73884 | 7125 | { |
c8e38a49 | 7126 | ULONGEST upid; |
a744cf53 | 7127 | |
c8e38a49 PA |
7128 | p += sizeof ("process:") - 1; |
7129 | unpack_varlen_hex (p, &upid); | |
7130 | pid = upid; | |
82f73884 PA |
7131 | } |
7132 | else | |
7133 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7134 | } |
c8e38a49 PA |
7135 | else |
7136 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
7137 | event->ptid = pid_to_ptid (pid); |
7138 | } | |
7139 | break; | |
f2faf941 PA |
7140 | case 'N': |
7141 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7142 | event->ptid = minus_one_ptid; | |
7143 | break; | |
74531fed PA |
7144 | } |
7145 | ||
6efcd9a8 | 7146 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
7147 | error (_("No process or thread specified in stop reply: %s"), buf); |
7148 | } | |
7149 | ||
722247f1 YQ |
7150 | /* When the stub wants to tell GDB about a new notification reply, it |
7151 | sends a notification (%Stop, for example). Those can come it at | |
7152 | any time, hence, we have to make sure that any pending | |
7153 | putpkt/getpkt sequence we're making is finished, before querying | |
7154 | the stub for more events with the corresponding ack command | |
7155 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7156 | immediately upon receiving the notification, something like this | |
7157 | could happen: | |
74531fed PA |
7158 | |
7159 | 1.1) --> Hg 1 | |
7160 | 1.2) <-- OK | |
7161 | 1.3) --> g | |
7162 | 1.4) <-- %Stop | |
7163 | 1.5) --> vStopped | |
7164 | 1.6) <-- (registers reply to step #1.3) | |
7165 | ||
7166 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7167 | query. | |
7168 | ||
796cb314 | 7169 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7170 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7171 | doing whatever we were doing: | |
7172 | ||
7173 | 2.1) --> Hg 1 | |
7174 | 2.2) <-- OK | |
7175 | 2.3) --> g | |
7176 | 2.4) <-- %Stop | |
7177 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7178 | 2.5) <-- (registers reply to step #2.3) | |
7179 | ||
7180 | Eventualy after step #2.5, we return to the event loop, which | |
7181 | notices there's an event on the | |
7182 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7183 | associated callback --- the function below. At this point, we're | |
7184 | always safe to start a vStopped sequence. : | |
7185 | ||
7186 | 2.6) --> vStopped | |
7187 | 2.7) <-- T05 thread:2 | |
7188 | 2.8) --> vStopped | |
7189 | 2.9) --> OK | |
7190 | */ | |
7191 | ||
722247f1 YQ |
7192 | void |
7193 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
7194 | { |
7195 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7196 | |
f48ff2a7 | 7197 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7198 | { |
722247f1 YQ |
7199 | if (notif_debug) |
7200 | fprintf_unfiltered (gdb_stdlog, | |
7201 | "notif: process: '%s' ack pending event\n", | |
7202 | nc->name); | |
74531fed | 7203 | |
722247f1 | 7204 | /* acknowledge */ |
f48ff2a7 YQ |
7205 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
7206 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
7207 | |
7208 | while (1) | |
7209 | { | |
7210 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7211 | if (strcmp (rs->buf, "OK") == 0) | |
7212 | break; | |
7213 | else | |
722247f1 | 7214 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
7215 | } |
7216 | } | |
722247f1 YQ |
7217 | else |
7218 | { | |
7219 | if (notif_debug) | |
7220 | fprintf_unfiltered (gdb_stdlog, | |
7221 | "notif: process: '%s' no pending reply\n", | |
7222 | nc->name); | |
7223 | } | |
74531fed PA |
7224 | } |
7225 | ||
74531fed PA |
7226 | /* Called when it is decided that STOP_REPLY holds the info of the |
7227 | event that is to be returned to the core. This function always | |
7228 | destroys STOP_REPLY. */ | |
7229 | ||
7230 | static ptid_t | |
7231 | process_stop_reply (struct stop_reply *stop_reply, | |
7232 | struct target_waitstatus *status) | |
7233 | { | |
7234 | ptid_t ptid; | |
7235 | ||
7236 | *status = stop_reply->ws; | |
7237 | ptid = stop_reply->ptid; | |
7238 | ||
7239 | /* If no thread/process was reported by the stub, assume the current | |
7240 | inferior. */ | |
7241 | if (ptid_equal (ptid, null_ptid)) | |
7242 | ptid = inferior_ptid; | |
7243 | ||
5f3563ea | 7244 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7245 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7246 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7247 | { |
799a2abe | 7248 | struct private_thread_info *remote_thr; |
ee154bee | 7249 | |
5f3563ea PA |
7250 | /* Expedited registers. */ |
7251 | if (stop_reply->regcache) | |
7252 | { | |
217f1f79 | 7253 | struct regcache *regcache |
f5656ead | 7254 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
7255 | cached_reg_t *reg; |
7256 | int ix; | |
7257 | ||
7258 | for (ix = 0; | |
d1dff226 | 7259 | VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg); |
5f3563ea | 7260 | ix++) |
d1dff226 | 7261 | { |
217f1f79 | 7262 | regcache_raw_supply (regcache, reg->num, reg->data); |
d1dff226 AH |
7263 | xfree (reg->data); |
7264 | } | |
7265 | ||
5f3563ea PA |
7266 | VEC_free (cached_reg_t, stop_reply->regcache); |
7267 | } | |
74531fed | 7268 | |
1941c569 | 7269 | remote_notice_new_inferior (ptid, 0); |
85ad3aaf | 7270 | remote_thr = get_private_info_ptid (ptid); |
799a2abe PA |
7271 | remote_thr->core = stop_reply->core; |
7272 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7273 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7274 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7275 | } |
7276 | ||
74531fed PA |
7277 | stop_reply_xfree (stop_reply); |
7278 | return ptid; | |
7279 | } | |
7280 | ||
7281 | /* The non-stop mode version of target_wait. */ | |
7282 | ||
7283 | static ptid_t | |
47608cb1 | 7284 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7285 | { |
7286 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7287 | struct stop_reply *stop_reply; |
7288 | int ret; | |
fee9eda9 | 7289 | int is_notif = 0; |
74531fed PA |
7290 | |
7291 | /* If in non-stop mode, get out of getpkt even if a | |
7292 | notification is received. */ | |
7293 | ||
7294 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 7295 | 0 /* forever */, &is_notif); |
74531fed PA |
7296 | while (1) |
7297 | { | |
fee9eda9 | 7298 | if (ret != -1 && !is_notif) |
74531fed PA |
7299 | switch (rs->buf[0]) |
7300 | { | |
7301 | case 'E': /* Error of some sort. */ | |
7302 | /* We're out of sync with the target now. Did it continue | |
7303 | or not? We can't tell which thread it was in non-stop, | |
7304 | so just ignore this. */ | |
7305 | warning (_("Remote failure reply: %s"), rs->buf); | |
7306 | break; | |
7307 | case 'O': /* Console output. */ | |
7308 | remote_console_output (rs->buf + 1); | |
7309 | break; | |
7310 | default: | |
7311 | warning (_("Invalid remote reply: %s"), rs->buf); | |
7312 | break; | |
7313 | } | |
7314 | ||
7315 | /* Acknowledge a pending stop reply that may have arrived in the | |
7316 | mean time. */ | |
f48ff2a7 | 7317 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7318 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7319 | |
7320 | /* If indeed we noticed a stop reply, we're done. */ | |
7321 | stop_reply = queued_stop_reply (ptid); | |
7322 | if (stop_reply != NULL) | |
7323 | return process_stop_reply (stop_reply, status); | |
7324 | ||
47608cb1 | 7325 | /* Still no event. If we're just polling for an event, then |
74531fed | 7326 | return to the event loop. */ |
47608cb1 | 7327 | if (options & TARGET_WNOHANG) |
74531fed PA |
7328 | { |
7329 | status->kind = TARGET_WAITKIND_IGNORE; | |
7330 | return minus_one_ptid; | |
7331 | } | |
7332 | ||
47608cb1 | 7333 | /* Otherwise do a blocking wait. */ |
74531fed | 7334 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 7335 | 1 /* forever */, &is_notif); |
74531fed PA |
7336 | } |
7337 | } | |
7338 | ||
7339 | /* Wait until the remote machine stops, then return, storing status in | |
7340 | STATUS just as `wait' would. */ | |
7341 | ||
7342 | static ptid_t | |
47608cb1 | 7343 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
7344 | { |
7345 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7346 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7347 | char *buf; |
74531fed PA |
7348 | struct stop_reply *stop_reply; |
7349 | ||
47608cb1 PA |
7350 | again: |
7351 | ||
74531fed PA |
7352 | status->kind = TARGET_WAITKIND_IGNORE; |
7353 | status->value.integer = 0; | |
7354 | ||
7355 | stop_reply = queued_stop_reply (ptid); | |
7356 | if (stop_reply != NULL) | |
7357 | return process_stop_reply (stop_reply, status); | |
7358 | ||
7359 | if (rs->cached_wait_status) | |
7360 | /* Use the cached wait status, but only once. */ | |
7361 | rs->cached_wait_status = 0; | |
7362 | else | |
7363 | { | |
7364 | int ret; | |
722247f1 | 7365 | int is_notif; |
567420d1 PA |
7366 | int forever = ((options & TARGET_WNOHANG) == 0 |
7367 | && wait_forever_enabled_p); | |
7368 | ||
7369 | if (!rs->waiting_for_stop_reply) | |
7370 | { | |
7371 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7372 | return minus_one_ptid; | |
7373 | } | |
74531fed | 7374 | |
74531fed PA |
7375 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7376 | _never_ wait for ever -> test on target_is_async_p(). | |
7377 | However, before we do that we need to ensure that the caller | |
7378 | knows how to take the target into/out of async mode. */ | |
722247f1 | 7379 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 7380 | forever, &is_notif); |
722247f1 YQ |
7381 | |
7382 | /* GDB gets a notification. Return to core as this event is | |
7383 | not interesting. */ | |
7384 | if (ret != -1 && is_notif) | |
7385 | return minus_one_ptid; | |
567420d1 PA |
7386 | |
7387 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7388 | return minus_one_ptid; | |
74531fed PA |
7389 | } |
7390 | ||
7391 | buf = rs->buf; | |
7392 | ||
3a29589a DJ |
7393 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7394 | an 'F' or 'O' packet. */ | |
7395 | if (buf[0] != 'F' && buf[0] != 'O') | |
7396 | rs->ctrlc_pending_p = 0; | |
7397 | ||
74531fed PA |
7398 | switch (buf[0]) |
7399 | { | |
7400 | case 'E': /* Error of some sort. */ | |
7401 | /* We're out of sync with the target now. Did it continue or | |
7402 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7403 | rs->waiting_for_stop_reply = 0; |
7404 | ||
74531fed PA |
7405 | warning (_("Remote failure reply: %s"), buf); |
7406 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7407 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7408 | break; |
7409 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7410 | /* GDB may access the inferior memory while handling the File-I/O |
7411 | request, but we don't want GDB accessing memory while waiting | |
7412 | for a stop reply. See the comments in putpkt_binary. Set | |
7413 | waiting_for_stop_reply to 0 temporarily. */ | |
7414 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7415 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7416 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7417 | /* GDB handled the File-I/O request, and the target is running |
7418 | again. Keep waiting for events. */ | |
7419 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7420 | break; |
f2faf941 | 7421 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7422 | { |
29090fb6 LM |
7423 | struct stop_reply *stop_reply; |
7424 | ||
7425 | /* There is a stop reply to handle. */ | |
7426 | rs->waiting_for_stop_reply = 0; | |
7427 | ||
7428 | stop_reply | |
722247f1 YQ |
7429 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7430 | rs->buf); | |
74531fed | 7431 | |
74531fed | 7432 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7433 | break; |
7434 | } | |
7435 | case 'O': /* Console output. */ | |
7436 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7437 | break; |
7438 | case '\0': | |
b73be471 | 7439 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7440 | { |
7441 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7442 | remote system doesn't support it. */ | |
223ffa71 | 7443 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7444 | printf_filtered |
7445 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7446 | gdb_signal_to_name (rs->last_sent_signal)); |
7447 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7448 | target_terminal::inferior (); |
c8e38a49 | 7449 | |
f5c4fcd9 TT |
7450 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7451 | putpkt (buf); | |
c8e38a49 | 7452 | break; |
43ff13b4 | 7453 | } |
c8e38a49 PA |
7454 | /* else fallthrough */ |
7455 | default: | |
7456 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7457 | break; |
43ff13b4 | 7458 | } |
c8e38a49 | 7459 | |
f2faf941 PA |
7460 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7461 | return minus_one_ptid; | |
7462 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7463 | { |
7464 | /* Nothing interesting happened. If we're doing a non-blocking | |
7465 | poll, we're done. Otherwise, go back to waiting. */ | |
7466 | if (options & TARGET_WNOHANG) | |
7467 | return minus_one_ptid; | |
7468 | else | |
7469 | goto again; | |
7470 | } | |
74531fed PA |
7471 | else if (status->kind != TARGET_WAITKIND_EXITED |
7472 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7473 | { |
7474 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7475 | record_currthread (rs, event_ptid); |
82f73884 PA |
7476 | else |
7477 | event_ptid = inferior_ptid; | |
43ff13b4 | 7478 | } |
74531fed PA |
7479 | else |
7480 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7481 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7482 | |
82f73884 | 7483 | return event_ptid; |
43ff13b4 JM |
7484 | } |
7485 | ||
74531fed PA |
7486 | /* Wait until the remote machine stops, then return, storing status in |
7487 | STATUS just as `wait' would. */ | |
7488 | ||
c8e38a49 | 7489 | static ptid_t |
117de6a9 | 7490 | remote_wait (struct target_ops *ops, |
47608cb1 | 7491 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7492 | { |
7493 | ptid_t event_ptid; | |
7494 | ||
6efcd9a8 | 7495 | if (target_is_non_stop_p ()) |
47608cb1 | 7496 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7497 | else |
47608cb1 | 7498 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7499 | |
d9d41e78 | 7500 | if (target_is_async_p ()) |
c8e38a49 | 7501 | { |
74531fed PA |
7502 | /* If there are are events left in the queue tell the event loop |
7503 | to return here. */ | |
722247f1 | 7504 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7505 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7506 | } |
c8e38a49 PA |
7507 | |
7508 | return event_ptid; | |
7509 | } | |
7510 | ||
74ca34ce | 7511 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7512 | |
b96ec7ac | 7513 | static int |
56be3814 | 7514 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac | 7515 | { |
9890e433 | 7516 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
b96ec7ac | 7517 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7518 | char *buf, *p; |
9890e433 | 7519 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7520 | int i; |
7521 | ||
4082afcc | 7522 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7523 | return 0; |
7524 | ||
7525 | if (reg->pnum == -1) | |
7526 | return 0; | |
7527 | ||
2e9f7625 | 7528 | p = rs->buf; |
fcad0fa4 | 7529 | *p++ = 'p'; |
74ca34ce | 7530 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7531 | *p++ = '\0'; |
1f4437a4 MS |
7532 | putpkt (rs->buf); |
7533 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7534 | |
2e9f7625 DJ |
7535 | buf = rs->buf; |
7536 | ||
74ca34ce DJ |
7537 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7538 | { | |
7539 | case PACKET_OK: | |
7540 | break; | |
7541 | case PACKET_UNKNOWN: | |
7542 | return 0; | |
7543 | case PACKET_ERROR: | |
27a9c0bf MS |
7544 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
7545 | gdbarch_register_name (get_regcache_arch (regcache), | |
7546 | reg->regnum), | |
7547 | buf); | |
74ca34ce | 7548 | } |
3f9a994c JB |
7549 | |
7550 | /* If this register is unfetchable, tell the regcache. */ | |
7551 | if (buf[0] == 'x') | |
8480adf2 | 7552 | { |
56be3814 | 7553 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7554 | return 1; |
b96ec7ac | 7555 | } |
b96ec7ac | 7556 | |
3f9a994c JB |
7557 | /* Otherwise, parse and supply the value. */ |
7558 | p = buf; | |
7559 | i = 0; | |
7560 | while (p[0] != 0) | |
7561 | { | |
7562 | if (p[1] == 0) | |
74ca34ce | 7563 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7564 | |
7565 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7566 | p += 2; | |
7567 | } | |
56be3814 | 7568 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7569 | return 1; |
b96ec7ac AC |
7570 | } |
7571 | ||
74ca34ce DJ |
7572 | /* Fetch the registers included in the target's 'g' packet. */ |
7573 | ||
29709017 DJ |
7574 | static int |
7575 | send_g_packet (void) | |
c906108c | 7576 | { |
d01949b6 | 7577 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7578 | int buf_len; |
c906108c | 7579 | |
bba74b36 | 7580 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7581 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7582 | |
29709017 DJ |
7583 | /* We can get out of synch in various cases. If the first character |
7584 | in the buffer is not a hex character, assume that has happened | |
7585 | and try to fetch another packet to read. */ | |
7586 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7587 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7588 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7589 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7590 | { | |
7591 | if (remote_debug) | |
7592 | fprintf_unfiltered (gdb_stdlog, | |
7593 | "Bad register packet; fetching a new packet\n"); | |
7594 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7595 | } | |
7596 | ||
74ca34ce DJ |
7597 | buf_len = strlen (rs->buf); |
7598 | ||
7599 | /* Sanity check the received packet. */ | |
7600 | if (buf_len % 2 != 0) | |
7601 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7602 | |
7603 | return buf_len / 2; | |
7604 | } | |
7605 | ||
7606 | static void | |
56be3814 | 7607 | process_g_packet (struct regcache *regcache) |
29709017 | 7608 | { |
4a22f64d | 7609 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
7610 | struct remote_state *rs = get_remote_state (); |
7611 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
7612 | int i, buf_len; | |
7613 | char *p; | |
7614 | char *regs; | |
7615 | ||
7616 | buf_len = strlen (rs->buf); | |
7617 | ||
7618 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 7619 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 SM |
7620 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
7621 | "bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf); | |
74ca34ce DJ |
7622 | |
7623 | /* Save the size of the packet sent to us by the target. It is used | |
7624 | as a heuristic when determining the max size of packets that the | |
7625 | target can safely receive. */ | |
7626 | if (rsa->actual_register_packet_size == 0) | |
7627 | rsa->actual_register_packet_size = buf_len; | |
7628 | ||
7629 | /* If this is smaller than we guessed the 'g' packet would be, | |
7630 | update our records. A 'g' reply that doesn't include a register's | |
7631 | value implies either that the register is not available, or that | |
7632 | the 'p' packet must be used. */ | |
7633 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7634 | { |
9dc193c3 | 7635 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 7636 | |
4a22f64d | 7637 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7638 | { |
9dc193c3 LF |
7639 | long offset = rsa->regs[i].offset; |
7640 | long reg_size = register_size (gdbarch, i); | |
7641 | ||
74ca34ce DJ |
7642 | if (rsa->regs[i].pnum == -1) |
7643 | continue; | |
7644 | ||
9dc193c3 | 7645 | if (offset >= sizeof_g_packet) |
74ca34ce | 7646 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
7647 | else if (offset + reg_size > sizeof_g_packet) |
7648 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 7649 | else |
74ca34ce | 7650 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7651 | } |
9dc193c3 LF |
7652 | |
7653 | /* Looks valid enough, we can assume this is the correct length | |
7654 | for a 'g' packet. It's important not to adjust | |
7655 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
7656 | this "if" won't be run the next time the method is called | |
7657 | with a packet of the same size and one of the internal errors | |
7658 | below will trigger instead. */ | |
7659 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 7660 | } |
b323314b | 7661 | |
224c3ddb | 7662 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7663 | |
7664 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7665 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7666 | |
c906108c SS |
7667 | /* Reply describes registers byte by byte, each byte encoded as two |
7668 | hex characters. Suck them all up, then supply them to the | |
7669 | register cacheing/storage mechanism. */ | |
7670 | ||
74ca34ce | 7671 | p = rs->buf; |
ea9c271d | 7672 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7673 | { |
74ca34ce DJ |
7674 | if (p[0] == 0 || p[1] == 0) |
7675 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7676 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7677 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7678 | |
c906108c | 7679 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7680 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7681 | else |
7682 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7683 | p += 2; | |
7684 | } | |
7685 | ||
a744cf53 MS |
7686 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7687 | { | |
7688 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 7689 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
7690 | |
7691 | if (r->in_g_packet) | |
7692 | { | |
9dc193c3 | 7693 | if ((r->offset + reg_size) * 2 > strlen (rs->buf)) |
a744cf53 MS |
7694 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
7695 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7696 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7697 | else if (rs->buf[r->offset * 2] == 'x') |
7698 | { | |
7699 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7700 | /* The register isn't available, mark it as such (at | |
7701 | the same time setting the value to zero). */ | |
7702 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7703 | } | |
7704 | else | |
7705 | regcache_raw_supply (regcache, r->regnum, | |
7706 | regs + r->offset); | |
7707 | } | |
7708 | } | |
c906108c SS |
7709 | } |
7710 | ||
29709017 | 7711 | static void |
56be3814 | 7712 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7713 | { |
7714 | send_g_packet (); | |
56be3814 | 7715 | process_g_packet (regcache); |
29709017 DJ |
7716 | } |
7717 | ||
e6e4e701 PA |
7718 | /* Make the remote selected traceframe match GDB's selected |
7719 | traceframe. */ | |
7720 | ||
7721 | static void | |
7722 | set_remote_traceframe (void) | |
7723 | { | |
7724 | int newnum; | |
262e1174 | 7725 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7726 | |
262e1174 | 7727 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7728 | return; |
7729 | ||
7730 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7731 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7732 | |
7733 | newnum = target_trace_find (tfind_number, | |
7734 | get_traceframe_number (), 0, 0, NULL); | |
7735 | ||
7736 | /* Should not happen. If it does, all bets are off. */ | |
7737 | if (newnum != get_traceframe_number ()) | |
7738 | warning (_("could not set remote traceframe")); | |
7739 | } | |
7740 | ||
74ca34ce | 7741 | static void |
28439f5e PA |
7742 | remote_fetch_registers (struct target_ops *ops, |
7743 | struct regcache *regcache, int regnum) | |
74ca34ce | 7744 | { |
74ca34ce DJ |
7745 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7746 | int i; | |
7747 | ||
e6e4e701 | 7748 | set_remote_traceframe (); |
bcc0c096 | 7749 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7750 | |
7751 | if (regnum >= 0) | |
7752 | { | |
7753 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7754 | |
74ca34ce DJ |
7755 | gdb_assert (reg != NULL); |
7756 | ||
7757 | /* If this register might be in the 'g' packet, try that first - | |
7758 | we are likely to read more than one register. If this is the | |
7759 | first 'g' packet, we might be overly optimistic about its | |
7760 | contents, so fall back to 'p'. */ | |
7761 | if (reg->in_g_packet) | |
7762 | { | |
56be3814 | 7763 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7764 | if (reg->in_g_packet) |
7765 | return; | |
7766 | } | |
7767 | ||
56be3814 | 7768 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7769 | return; |
7770 | ||
7771 | /* This register is not available. */ | |
56be3814 | 7772 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7773 | |
7774 | return; | |
7775 | } | |
7776 | ||
56be3814 | 7777 | fetch_registers_using_g (regcache); |
74ca34ce | 7778 | |
4a22f64d | 7779 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7780 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7781 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7782 | { |
7783 | /* This register is not available. */ | |
56be3814 | 7784 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7785 | } |
7786 | } | |
7787 | ||
c906108c SS |
7788 | /* Prepare to store registers. Since we may send them all (using a |
7789 | 'G' request), we have to read out the ones we don't want to change | |
7790 | first. */ | |
7791 | ||
c5aa993b | 7792 | static void |
f32dbf8c | 7793 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7794 | { |
ea9c271d | 7795 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 7796 | int i; |
cf0e1e0d | 7797 | |
c906108c | 7798 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7799 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7800 | { |
7801 | case PACKET_DISABLE: | |
7802 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7803 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7804 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7805 | if (rsa->regs[i].in_g_packet) |
8e368124 | 7806 | regcache_raw_update (regcache, rsa->regs[i].regnum); |
5a2468f5 JM |
7807 | break; |
7808 | case PACKET_ENABLE: | |
7809 | break; | |
7810 | } | |
7811 | } | |
7812 | ||
ad10f812 | 7813 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7814 | packet was not recognized. */ |
5a2468f5 JM |
7815 | |
7816 | static int | |
1f4437a4 MS |
7817 | store_register_using_P (const struct regcache *regcache, |
7818 | struct packet_reg *reg) | |
5a2468f5 | 7819 | { |
4a22f64d | 7820 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7821 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7822 | /* Try storing a single register. */ |
6d820c5c | 7823 | char *buf = rs->buf; |
9890e433 | 7824 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 7825 | char *p; |
5a2468f5 | 7826 | |
4082afcc | 7827 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7828 | return 0; |
7829 | ||
7830 | if (reg->pnum == -1) | |
7831 | return 0; | |
7832 | ||
ea9c271d | 7833 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7834 | p = buf + strlen (buf); |
56be3814 | 7835 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7836 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7837 | putpkt (rs->buf); |
7838 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7839 | |
74ca34ce DJ |
7840 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7841 | { | |
7842 | case PACKET_OK: | |
7843 | return 1; | |
7844 | case PACKET_ERROR: | |
27a9c0bf MS |
7845 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7846 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7847 | case PACKET_UNKNOWN: |
7848 | return 0; | |
7849 | default: | |
7850 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7851 | } | |
c906108c SS |
7852 | } |
7853 | ||
23860348 MS |
7854 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7855 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7856 | |
7857 | static void | |
56be3814 | 7858 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7859 | { |
d01949b6 | 7860 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7861 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7862 | gdb_byte *regs; |
c906108c SS |
7863 | char *p; |
7864 | ||
193cb69f AC |
7865 | /* Extract all the registers in the regcache copying them into a |
7866 | local buffer. */ | |
7867 | { | |
b323314b | 7868 | int i; |
a744cf53 | 7869 | |
224c3ddb | 7870 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7871 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7872 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7873 | { |
ea9c271d | 7874 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7875 | |
b323314b | 7876 | if (r->in_g_packet) |
56be3814 | 7877 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7878 | } |
7879 | } | |
c906108c SS |
7880 | |
7881 | /* Command describes registers byte by byte, | |
7882 | each byte encoded as two hex characters. */ | |
6d820c5c | 7883 | p = rs->buf; |
193cb69f | 7884 | *p++ = 'G'; |
74ca34ce | 7885 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 MS |
7886 | putpkt (rs->buf); |
7887 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7888 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7889 | error (_("Could not write registers; remote failure reply '%s'"), |
7890 | rs->buf); | |
c906108c | 7891 | } |
74ca34ce DJ |
7892 | |
7893 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7894 | of the register cache buffer. FIXME: ignores errors. */ | |
7895 | ||
7896 | static void | |
28439f5e PA |
7897 | remote_store_registers (struct target_ops *ops, |
7898 | struct regcache *regcache, int regnum) | |
74ca34ce | 7899 | { |
74ca34ce DJ |
7900 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7901 | int i; | |
7902 | ||
e6e4e701 | 7903 | set_remote_traceframe (); |
bcc0c096 | 7904 | set_general_thread (regcache_get_ptid (regcache)); |
74ca34ce DJ |
7905 | |
7906 | if (regnum >= 0) | |
7907 | { | |
7908 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7909 | |
74ca34ce DJ |
7910 | gdb_assert (reg != NULL); |
7911 | ||
7912 | /* Always prefer to store registers using the 'P' packet if | |
7913 | possible; we often change only a small number of registers. | |
7914 | Sometimes we change a larger number; we'd need help from a | |
7915 | higher layer to know to use 'G'. */ | |
56be3814 | 7916 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7917 | return; |
7918 | ||
7919 | /* For now, don't complain if we have no way to write the | |
7920 | register. GDB loses track of unavailable registers too | |
7921 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7922 | any way to read the register, either... */ |
74ca34ce DJ |
7923 | if (!reg->in_g_packet) |
7924 | return; | |
7925 | ||
56be3814 | 7926 | store_registers_using_G (regcache); |
74ca34ce DJ |
7927 | return; |
7928 | } | |
7929 | ||
56be3814 | 7930 | store_registers_using_G (regcache); |
74ca34ce | 7931 | |
4a22f64d | 7932 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7933 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7934 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7935 | /* See above for why we do not issue an error here. */ |
7936 | continue; | |
7937 | } | |
c906108c SS |
7938 | \f |
7939 | ||
7940 | /* Return the number of hex digits in num. */ | |
7941 | ||
7942 | static int | |
fba45db2 | 7943 | hexnumlen (ULONGEST num) |
c906108c SS |
7944 | { |
7945 | int i; | |
7946 | ||
7947 | for (i = 0; num != 0; i++) | |
7948 | num >>= 4; | |
7949 | ||
325fac50 | 7950 | return std::max (i, 1); |
c906108c SS |
7951 | } |
7952 | ||
2df3850c | 7953 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7954 | |
7955 | static int | |
fba45db2 | 7956 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7957 | { |
c906108c | 7958 | int len = hexnumlen (num); |
a744cf53 | 7959 | |
2df3850c JM |
7960 | return hexnumnstr (buf, num, len); |
7961 | } | |
7962 | ||
c906108c | 7963 | |
2df3850c | 7964 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7965 | |
2df3850c | 7966 | static int |
fba45db2 | 7967 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7968 | { |
7969 | int i; | |
7970 | ||
7971 | buf[width] = '\0'; | |
7972 | ||
7973 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7974 | { |
c5aa993b | 7975 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7976 | num >>= 4; |
7977 | } | |
7978 | ||
2df3850c | 7979 | return width; |
c906108c SS |
7980 | } |
7981 | ||
23860348 | 7982 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7983 | |
7984 | static CORE_ADDR | |
fba45db2 | 7985 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7986 | { |
883b9c6c | 7987 | unsigned int address_size = remote_address_size; |
a744cf53 | 7988 | |
911c95a5 UW |
7989 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7990 | if (!address_size) | |
f5656ead | 7991 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7992 | |
7993 | if (address_size > 0 | |
7994 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7995 | { |
7996 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7997 | in a ULONGEST variable. */ |
c906108c | 7998 | ULONGEST mask = 1; |
a744cf53 | 7999 | |
911c95a5 | 8000 | mask = (mask << address_size) - 1; |
c906108c SS |
8001 | addr &= mask; |
8002 | } | |
8003 | return addr; | |
8004 | } | |
8005 | ||
8006 | /* Determine whether the remote target supports binary downloading. | |
8007 | This is accomplished by sending a no-op memory write of zero length | |
8008 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8009 | the whole packet, since many stubs strip the eighth bit and |
8010 | subsequently compute a wrong checksum, which causes real havoc with | |
8011 | remote_write_bytes. | |
7a292a7a | 8012 | |
96baa820 | 8013 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8014 | clean. In cases like this, the user should clear "remote |
23860348 | 8015 | X-packet". */ |
96baa820 | 8016 | |
c906108c | 8017 | static void |
fba45db2 | 8018 | check_binary_download (CORE_ADDR addr) |
c906108c | 8019 | { |
d01949b6 | 8020 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8021 | |
4082afcc | 8022 | switch (packet_support (PACKET_X)) |
c906108c | 8023 | { |
96baa820 JM |
8024 | case PACKET_DISABLE: |
8025 | break; | |
8026 | case PACKET_ENABLE: | |
8027 | break; | |
8028 | case PACKET_SUPPORT_UNKNOWN: | |
8029 | { | |
96baa820 | 8030 | char *p; |
802188a7 | 8031 | |
2e9f7625 | 8032 | p = rs->buf; |
96baa820 JM |
8033 | *p++ = 'X'; |
8034 | p += hexnumstr (p, (ULONGEST) addr); | |
8035 | *p++ = ','; | |
8036 | p += hexnumstr (p, (ULONGEST) 0); | |
8037 | *p++ = ':'; | |
8038 | *p = '\0'; | |
802188a7 | 8039 | |
2e9f7625 | 8040 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8041 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8042 | |
2e9f7625 | 8043 | if (rs->buf[0] == '\0') |
96baa820 JM |
8044 | { |
8045 | if (remote_debug) | |
8046 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8047 | "binary downloading NOT " |
8048 | "supported by target\n"); | |
444abaca | 8049 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8050 | } |
8051 | else | |
8052 | { | |
8053 | if (remote_debug) | |
8054 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8055 | "binary downloading supported by target\n"); |
444abaca | 8056 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8057 | } |
8058 | break; | |
8059 | } | |
c906108c SS |
8060 | } |
8061 | } | |
8062 | ||
124e13d9 SM |
8063 | /* Helper function to resize the payload in order to try to get a good |
8064 | alignment. We try to write an amount of data such that the next write will | |
8065 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8066 | ||
8067 | static int | |
8068 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8069 | { | |
8070 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8071 | } | |
8072 | ||
c906108c SS |
8073 | /* Write memory data directly to the remote machine. |
8074 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8075 | HEADER is the starting part of the packet. |
c906108c SS |
8076 | MEMADDR is the address in the remote memory space. |
8077 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8078 | LEN_UNITS is the number of addressable units to write. |
8079 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8080 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8081 | should send data as binary ('X'), or hex-encoded ('M'). | |
8082 | ||
8083 | The function creates packet of the form | |
8084 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8085 | ||
124e13d9 | 8086 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8087 | |
8088 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8089 | are omitted. | |
8090 | ||
9b409511 | 8091 | Return the transferred status, error or OK (an |
124e13d9 SM |
8092 | 'enum target_xfer_status' value). Save the number of addressable units |
8093 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8094 | ||
8095 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8096 | exchange between gdb and the stub could look like (?? in place of the | |
8097 | checksum): | |
8098 | ||
8099 | -> $m1000,4#?? | |
8100 | <- aaaabbbbccccdddd | |
8101 | ||
8102 | -> $M1000,3:eeeeffffeeee#?? | |
8103 | <- OK | |
8104 | ||
8105 | -> $m1000,4#?? | |
8106 | <- eeeeffffeeeedddd */ | |
c906108c | 8107 | |
9b409511 | 8108 | static enum target_xfer_status |
a76d924d | 8109 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
8110 | const gdb_byte *myaddr, ULONGEST len_units, |
8111 | int unit_size, ULONGEST *xfered_len_units, | |
8112 | char packet_format, int use_length) | |
c906108c | 8113 | { |
6d820c5c | 8114 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8115 | char *p; |
a76d924d DJ |
8116 | char *plen = NULL; |
8117 | int plenlen = 0; | |
124e13d9 SM |
8118 | int todo_units; |
8119 | int units_written; | |
8120 | int payload_capacity_bytes; | |
8121 | int payload_length_bytes; | |
a76d924d DJ |
8122 | |
8123 | if (packet_format != 'X' && packet_format != 'M') | |
8124 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8125 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8126 | |
124e13d9 | 8127 | if (len_units == 0) |
9b409511 | 8128 | return TARGET_XFER_EOF; |
b2182ed2 | 8129 | |
124e13d9 | 8130 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8131 | |
6d820c5c DJ |
8132 | /* The packet buffer will be large enough for the payload; |
8133 | get_memory_packet_size ensures this. */ | |
a76d924d | 8134 | rs->buf[0] = '\0'; |
c906108c | 8135 | |
a257b5bb | 8136 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8137 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8138 | ||
124e13d9 | 8139 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8140 | if (!use_length) |
0df8b418 | 8141 | /* The comma won't be used. */ |
124e13d9 SM |
8142 | payload_capacity_bytes += 1; |
8143 | payload_capacity_bytes -= strlen (header); | |
8144 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8145 | |
a76d924d | 8146 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8147 | |
a76d924d DJ |
8148 | strcat (rs->buf, header); |
8149 | p = rs->buf + strlen (header); | |
8150 | ||
8151 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8152 | if (packet_format == 'X') | |
c906108c | 8153 | { |
23860348 | 8154 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8155 | todo_units = std::min (len_units, |
8156 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8157 | if (use_length) |
124e13d9 | 8158 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8159 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8160 | } |
8161 | else | |
8162 | { | |
124e13d9 | 8163 | /* Number of bytes that will fit. */ |
325fac50 PA |
8164 | todo_units |
8165 | = std::min (len_units, | |
8166 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8167 | if (use_length) |
124e13d9 | 8168 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8169 | todo_units = std::min (todo_units, |
8170 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8171 | } |
a76d924d | 8172 | |
124e13d9 | 8173 | if (todo_units <= 0) |
3de11b2e | 8174 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8175 | _("minimum packet size too small to write data")); |
802188a7 | 8176 | |
6765f3e5 DJ |
8177 | /* If we already need another packet, then try to align the end |
8178 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8179 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8180 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8181 | |
a257b5bb | 8182 | /* Append "<memaddr>". */ |
917317f4 JM |
8183 | memaddr = remote_address_masked (memaddr); |
8184 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8185 | |
a76d924d DJ |
8186 | if (use_length) |
8187 | { | |
8188 | /* Append ",". */ | |
8189 | *p++ = ','; | |
802188a7 | 8190 | |
124e13d9 SM |
8191 | /* Append the length and retain its location and size. It may need to be |
8192 | adjusted once the packet body has been created. */ | |
a76d924d | 8193 | plen = p; |
124e13d9 | 8194 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8195 | p += plenlen; |
8196 | } | |
a257b5bb AC |
8197 | |
8198 | /* Append ":". */ | |
917317f4 JM |
8199 | *p++ = ':'; |
8200 | *p = '\0'; | |
802188a7 | 8201 | |
a257b5bb | 8202 | /* Append the packet body. */ |
a76d924d | 8203 | if (packet_format == 'X') |
917317f4 | 8204 | { |
917317f4 JM |
8205 | /* Binary mode. Send target system values byte by byte, in |
8206 | increasing byte addresses. Only escape certain critical | |
8207 | characters. */ | |
124e13d9 SM |
8208 | payload_length_bytes = |
8209 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8210 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8211 | |
124e13d9 | 8212 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8213 | a second try to keep the end of the packet aligned. Don't do |
8214 | this if the packet is tiny. */ | |
124e13d9 | 8215 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8216 | { |
124e13d9 SM |
8217 | int new_todo_units; |
8218 | ||
8219 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8220 | ||
8221 | if (new_todo_units != units_written) | |
8222 | payload_length_bytes = | |
8223 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8224 | (gdb_byte *) p, &units_written, | |
8225 | payload_capacity_bytes); | |
6765f3e5 DJ |
8226 | } |
8227 | ||
124e13d9 SM |
8228 | p += payload_length_bytes; |
8229 | if (use_length && units_written < todo_units) | |
c906108c | 8230 | { |
802188a7 | 8231 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8232 | and we have actually sent fewer units than planned. |
917317f4 JM |
8233 | Fix-up the length field of the packet. Use the same |
8234 | number of characters as before. */ | |
124e13d9 SM |
8235 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8236 | plenlen); | |
917317f4 | 8237 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8238 | } |
a76d924d DJ |
8239 | } |
8240 | else | |
8241 | { | |
917317f4 JM |
8242 | /* Normal mode: Send target system values byte by byte, in |
8243 | increasing byte addresses. Each byte is encoded as a two hex | |
8244 | value. */ | |
124e13d9 SM |
8245 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8246 | units_written = todo_units; | |
c906108c | 8247 | } |
802188a7 | 8248 | |
2e9f7625 | 8249 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 8250 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 8251 | |
2e9f7625 | 8252 | if (rs->buf[0] == 'E') |
00d84524 | 8253 | return TARGET_XFER_E_IO; |
802188a7 | 8254 | |
124e13d9 SM |
8255 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8256 | send fewer units than we'd planned. */ | |
8257 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 8258 | return TARGET_XFER_OK; |
c906108c SS |
8259 | } |
8260 | ||
a76d924d DJ |
8261 | /* Write memory data directly to the remote machine. |
8262 | This does not inform the data cache; the data cache uses this. | |
8263 | MEMADDR is the address in the remote memory space. | |
8264 | MYADDR is the address of the buffer in our space. | |
8265 | LEN is the number of bytes. | |
8266 | ||
9b409511 YQ |
8267 | Return the transferred status, error or OK (an |
8268 | 'enum target_xfer_status' value). Save the number of bytes | |
8269 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8270 | |
9b409511 YQ |
8271 | static enum target_xfer_status |
8272 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 8273 | int unit_size, ULONGEST *xfered_len) |
a76d924d | 8274 | { |
a121b7c1 | 8275 | const char *packet_format = NULL; |
a76d924d DJ |
8276 | |
8277 | /* Check whether the target supports binary download. */ | |
8278 | check_binary_download (memaddr); | |
8279 | ||
4082afcc | 8280 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8281 | { |
8282 | case PACKET_ENABLE: | |
8283 | packet_format = "X"; | |
8284 | break; | |
8285 | case PACKET_DISABLE: | |
8286 | packet_format = "M"; | |
8287 | break; | |
8288 | case PACKET_SUPPORT_UNKNOWN: | |
8289 | internal_error (__FILE__, __LINE__, | |
8290 | _("remote_write_bytes: bad internal state")); | |
8291 | default: | |
8292 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8293 | } | |
8294 | ||
8295 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8296 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8297 | packet_format[0], 1); |
a76d924d DJ |
8298 | } |
8299 | ||
9217e74e YQ |
8300 | /* Read memory data directly from the remote machine. |
8301 | This does not use the data cache; the data cache uses this. | |
8302 | MEMADDR is the address in the remote memory space. | |
8303 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8304 | LEN_UNITS is the number of addressable memory units to read.. |
8305 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8306 | |
8307 | Return the transferred status, error or OK (an | |
8308 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8309 | transferred in *XFERED_LEN_UNITS. |
8310 | ||
8311 | See the comment of remote_write_bytes_aux for an example of | |
8312 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
8313 | |
8314 | static enum target_xfer_status | |
124e13d9 SM |
8315 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
8316 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8317 | { |
8318 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8319 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8320 | char *p; |
124e13d9 SM |
8321 | int todo_units; |
8322 | int decoded_bytes; | |
9217e74e | 8323 | |
124e13d9 | 8324 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8325 | /* The packet buffer will be large enough for the payload; |
8326 | get_memory_packet_size ensures this. */ | |
8327 | ||
124e13d9 | 8328 | /* Number of units that will fit. */ |
325fac50 PA |
8329 | todo_units = std::min (len_units, |
8330 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8331 | |
8332 | /* Construct "m"<memaddr>","<len>". */ | |
8333 | memaddr = remote_address_masked (memaddr); | |
8334 | p = rs->buf; | |
8335 | *p++ = 'm'; | |
8336 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8337 | *p++ = ','; | |
124e13d9 | 8338 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8339 | *p = '\0'; |
8340 | putpkt (rs->buf); | |
8341 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8342 | if (rs->buf[0] == 'E' | |
8343 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8344 | && rs->buf[3] == '\0') | |
8345 | return TARGET_XFER_E_IO; | |
8346 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8347 | characters. */ | |
8348 | p = rs->buf; | |
124e13d9 | 8349 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8350 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8351 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
8352 | return TARGET_XFER_OK; |
8353 | } | |
8354 | ||
b55fbac4 YQ |
8355 | /* Using the set of read-only target sections of remote, read live |
8356 | read-only memory. | |
8acf9577 YQ |
8357 | |
8358 | For interface/parameters/return description see target.h, | |
8359 | to_xfer_partial. */ | |
8360 | ||
8361 | static enum target_xfer_status | |
b55fbac4 YQ |
8362 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
8363 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 8364 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
8365 | { |
8366 | struct target_section *secp; | |
8367 | struct target_section_table *table; | |
8368 | ||
8369 | secp = target_section_by_addr (ops, memaddr); | |
8370 | if (secp != NULL | |
8371 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
8372 | secp->the_bfd_section) | |
8373 | & SEC_READONLY)) | |
8374 | { | |
8375 | struct target_section *p; | |
8376 | ULONGEST memend = memaddr + len; | |
8377 | ||
8378 | table = target_get_section_table (ops); | |
8379 | ||
8380 | for (p = table->sections; p < table->sections_end; p++) | |
8381 | { | |
8382 | if (memaddr >= p->addr) | |
8383 | { | |
8384 | if (memend <= p->endaddr) | |
8385 | { | |
8386 | /* Entire transfer is within this section. */ | |
124e13d9 | 8387 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8388 | xfered_len); |
8acf9577 YQ |
8389 | } |
8390 | else if (memaddr >= p->endaddr) | |
8391 | { | |
8392 | /* This section ends before the transfer starts. */ | |
8393 | continue; | |
8394 | } | |
8395 | else | |
8396 | { | |
8397 | /* This section overlaps the transfer. Just do half. */ | |
8398 | len = p->endaddr - memaddr; | |
124e13d9 | 8399 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8400 | xfered_len); |
8acf9577 YQ |
8401 | } |
8402 | } | |
8403 | } | |
8404 | } | |
8405 | ||
8406 | return TARGET_XFER_EOF; | |
8407 | } | |
8408 | ||
9217e74e YQ |
8409 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8410 | first if the requested memory is unavailable in traceframe. | |
8411 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8412 | |
9b409511 | 8413 | static enum target_xfer_status |
8acf9577 | 8414 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
8415 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
8416 | ULONGEST *xfered_len) | |
c906108c | 8417 | { |
6b6aa828 | 8418 | if (len == 0) |
96c4f946 | 8419 | return TARGET_XFER_EOF; |
b2182ed2 | 8420 | |
8acf9577 YQ |
8421 | if (get_traceframe_number () != -1) |
8422 | { | |
8423 | VEC(mem_range_s) *available; | |
8424 | ||
8425 | /* If we fail to get the set of available memory, then the | |
8426 | target does not support querying traceframe info, and so we | |
8427 | attempt reading from the traceframe anyway (assuming the | |
8428 | target implements the old QTro packet then). */ | |
8429 | if (traceframe_available_memory (&available, memaddr, len)) | |
8430 | { | |
8431 | struct cleanup *old_chain; | |
8432 | ||
8433 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
8434 | ||
8435 | if (VEC_empty (mem_range_s, available) | |
8436 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
8437 | { | |
8438 | enum target_xfer_status res; | |
8439 | ||
8440 | /* Don't read into the traceframe's available | |
8441 | memory. */ | |
8442 | if (!VEC_empty (mem_range_s, available)) | |
8443 | { | |
8444 | LONGEST oldlen = len; | |
8445 | ||
8446 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
8447 | gdb_assert (len <= oldlen); | |
8448 | } | |
8449 | ||
8450 | do_cleanups (old_chain); | |
8451 | ||
8452 | /* This goes through the topmost target again. */ | |
b55fbac4 | 8453 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8454 | len, unit_size, xfered_len); |
8acf9577 YQ |
8455 | if (res == TARGET_XFER_OK) |
8456 | return TARGET_XFER_OK; | |
8457 | else | |
8458 | { | |
8459 | /* No use trying further, we know some memory starting | |
8460 | at MEMADDR isn't available. */ | |
8461 | *xfered_len = len; | |
8462 | return TARGET_XFER_UNAVAILABLE; | |
8463 | } | |
8464 | } | |
8465 | ||
8466 | /* Don't try to read more than how much is available, in | |
8467 | case the target implements the deprecated QTro packet to | |
8468 | cater for older GDBs (the target's knowledge of read-only | |
8469 | sections may be outdated by now). */ | |
8470 | len = VEC_index (mem_range_s, available, 0)->length; | |
8471 | ||
8472 | do_cleanups (old_chain); | |
8473 | } | |
8474 | } | |
8475 | ||
124e13d9 | 8476 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8477 | } |
74531fed | 8478 | |
c906108c | 8479 | \f |
c906108c | 8480 | |
a76d924d DJ |
8481 | /* Sends a packet with content determined by the printf format string |
8482 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8483 | whether the packet was a success, a failure, or unknown. */ | |
8484 | ||
77b64a49 PA |
8485 | static enum packet_result remote_send_printf (const char *format, ...) |
8486 | ATTRIBUTE_PRINTF (1, 2); | |
8487 | ||
2c0b251b | 8488 | static enum packet_result |
a76d924d DJ |
8489 | remote_send_printf (const char *format, ...) |
8490 | { | |
8491 | struct remote_state *rs = get_remote_state (); | |
8492 | int max_size = get_remote_packet_size (); | |
a76d924d | 8493 | va_list ap; |
a744cf53 | 8494 | |
a76d924d DJ |
8495 | va_start (ap, format); |
8496 | ||
8497 | rs->buf[0] = '\0'; | |
8498 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8499 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8500 | |
8501 | if (putpkt (rs->buf) < 0) | |
8502 | error (_("Communication problem with target.")); | |
8503 | ||
8504 | rs->buf[0] = '\0'; | |
8505 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8506 | ||
8507 | return packet_check_result (rs->buf); | |
8508 | } | |
8509 | ||
a76d924d DJ |
8510 | /* Flash writing can take quite some time. We'll set |
8511 | effectively infinite timeout for flash operations. | |
8512 | In future, we'll need to decide on a better approach. */ | |
8513 | static const int remote_flash_timeout = 1000; | |
8514 | ||
8515 | static void | |
8516 | remote_flash_erase (struct target_ops *ops, | |
8517 | ULONGEST address, LONGEST length) | |
8518 | { | |
f5656ead | 8519 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8520 | enum packet_result ret; |
2ec845e7 TT |
8521 | scoped_restore restore_timeout |
8522 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8523 | |
8524 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8525 | phex (address, addr_size), |
a76d924d DJ |
8526 | phex (length, 4)); |
8527 | switch (ret) | |
8528 | { | |
8529 | case PACKET_UNKNOWN: | |
8530 | error (_("Remote target does not support flash erase")); | |
8531 | case PACKET_ERROR: | |
8532 | error (_("Error erasing flash with vFlashErase packet")); | |
8533 | default: | |
8534 | break; | |
8535 | } | |
a76d924d DJ |
8536 | } |
8537 | ||
9b409511 YQ |
8538 | static enum target_xfer_status |
8539 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8540 | ULONGEST length, ULONGEST *xfered_len, | |
8541 | const gdb_byte *data) | |
a76d924d | 8542 | { |
2ec845e7 TT |
8543 | scoped_restore restore_timeout |
8544 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8545 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8546 | xfered_len,'X', 0); | |
a76d924d DJ |
8547 | } |
8548 | ||
8549 | static void | |
8550 | remote_flash_done (struct target_ops *ops) | |
8551 | { | |
a76d924d | 8552 | int ret; |
a76d924d | 8553 | |
2ec845e7 TT |
8554 | scoped_restore restore_timeout |
8555 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8556 | ||
a76d924d | 8557 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8558 | |
8559 | switch (ret) | |
8560 | { | |
8561 | case PACKET_UNKNOWN: | |
8562 | error (_("Remote target does not support vFlashDone")); | |
8563 | case PACKET_ERROR: | |
8564 | error (_("Error finishing flash operation")); | |
8565 | default: | |
8566 | break; | |
8567 | } | |
8568 | } | |
8569 | ||
c906108c | 8570 | static void |
fba45db2 | 8571 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8572 | { |
8573 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8574 | } | |
8575 | \f | |
8576 | /* Stuff for dealing with the packets which are part of this protocol. | |
8577 | See comment at top of file for details. */ | |
8578 | ||
1927e618 PA |
8579 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8580 | error to higher layers. Called when a serial error is detected. | |
8581 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8582 | the system error message for errno at function entry and final dot |
8583 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8584 | |
8585 | static void | |
8586 | unpush_and_perror (const char *string) | |
8587 | { | |
d6cb50a2 | 8588 | int saved_errno = errno; |
1927e618 PA |
8589 | |
8590 | remote_unpush_target (); | |
d6cb50a2 JK |
8591 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8592 | safe_strerror (saved_errno)); | |
1927e618 PA |
8593 | } |
8594 | ||
048094ac PA |
8595 | /* Read a single character from the remote end. The current quit |
8596 | handler is overridden to avoid quitting in the middle of packet | |
8597 | sequence, as that would break communication with the remote server. | |
8598 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8599 | |
8600 | static int | |
fba45db2 | 8601 | readchar (int timeout) |
c906108c SS |
8602 | { |
8603 | int ch; | |
5d93a237 | 8604 | struct remote_state *rs = get_remote_state (); |
048094ac | 8605 | |
2ec845e7 TT |
8606 | { |
8607 | scoped_restore restore_quit | |
8608 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
c906108c | 8609 | |
2ec845e7 | 8610 | rs->got_ctrlc_during_io = 0; |
c906108c | 8611 | |
2ec845e7 | 8612 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8613 | |
2ec845e7 TT |
8614 | if (rs->got_ctrlc_during_io) |
8615 | set_quit_flag (); | |
8616 | } | |
048094ac | 8617 | |
2acceee2 | 8618 | if (ch >= 0) |
0876f84a | 8619 | return ch; |
2acceee2 JM |
8620 | |
8621 | switch ((enum serial_rc) ch) | |
c906108c SS |
8622 | { |
8623 | case SERIAL_EOF: | |
78a095c3 | 8624 | remote_unpush_target (); |
598d3636 | 8625 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8626 | /* no return */ |
c906108c | 8627 | case SERIAL_ERROR: |
1927e618 PA |
8628 | unpush_and_perror (_("Remote communication error. " |
8629 | "Target disconnected.")); | |
2acceee2 | 8630 | /* no return */ |
c906108c | 8631 | case SERIAL_TIMEOUT: |
2acceee2 | 8632 | break; |
c906108c | 8633 | } |
2acceee2 | 8634 | return ch; |
c906108c SS |
8635 | } |
8636 | ||
c33e31fd | 8637 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8638 | writing fails. The current quit handler is overridden to avoid |
8639 | quitting in the middle of packet sequence, as that would break | |
8640 | communication with the remote server. See | |
8641 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8642 | |
8643 | static void | |
8644 | remote_serial_write (const char *str, int len) | |
8645 | { | |
5d93a237 | 8646 | struct remote_state *rs = get_remote_state (); |
048094ac | 8647 | |
2ec845e7 TT |
8648 | scoped_restore restore_quit |
8649 | = make_scoped_restore (&quit_handler, remote_serial_quit_handler); | |
048094ac PA |
8650 | |
8651 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8652 | |
8653 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8654 | { |
1927e618 PA |
8655 | unpush_and_perror (_("Remote communication error. " |
8656 | "Target disconnected.")); | |
c33e31fd | 8657 | } |
048094ac PA |
8658 | |
8659 | if (rs->got_ctrlc_during_io) | |
8660 | set_quit_flag (); | |
c33e31fd PA |
8661 | } |
8662 | ||
6d820c5c DJ |
8663 | /* Send the command in *BUF to the remote machine, and read the reply |
8664 | into *BUF. Report an error if we get an error reply. Resize | |
8665 | *BUF using xrealloc if necessary to hold the result, and update | |
8666 | *SIZEOF_BUF. */ | |
c906108c SS |
8667 | |
8668 | static void | |
6d820c5c DJ |
8669 | remote_send (char **buf, |
8670 | long *sizeof_buf) | |
c906108c | 8671 | { |
6d820c5c | 8672 | putpkt (*buf); |
c2d11a7d | 8673 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8674 | |
6d820c5c DJ |
8675 | if ((*buf)[0] == 'E') |
8676 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8677 | } |
8678 | ||
b3ced9ba PA |
8679 | /* Return a string representing an escaped version of BUF, of len N. |
8680 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 8681 | |
b3ced9ba | 8682 | static std::string |
6e5abd65 PA |
8683 | escape_buffer (const char *buf, int n) |
8684 | { | |
d7e74731 | 8685 | string_file stb; |
6e5abd65 | 8686 | |
d7e74731 PA |
8687 | stb.putstrn (buf, n, '\\'); |
8688 | return std::move (stb.string ()); | |
6e5abd65 PA |
8689 | } |
8690 | ||
c906108c SS |
8691 | /* Display a null-terminated packet on stdout, for debugging, using C |
8692 | string notation. */ | |
8693 | ||
8694 | static void | |
baa336ce | 8695 | print_packet (const char *buf) |
c906108c SS |
8696 | { |
8697 | puts_filtered ("\""); | |
43e526b9 | 8698 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8699 | puts_filtered ("\""); |
8700 | } | |
8701 | ||
8702 | int | |
baa336ce | 8703 | putpkt (const char *buf) |
c906108c SS |
8704 | { |
8705 | return putpkt_binary (buf, strlen (buf)); | |
8706 | } | |
8707 | ||
8708 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8709 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8710 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8711 | and for a possible /0 if we are debugging (remote_debug) and want |
8712 | to print the sent packet as a string. */ | |
c906108c SS |
8713 | |
8714 | static int | |
baa336ce | 8715 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8716 | { |
2d717e4f | 8717 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8718 | int i; |
8719 | unsigned char csum = 0; | |
224c3ddb | 8720 | char *buf2 = (char *) xmalloc (cnt + 6); |
a5c0808e | 8721 | struct cleanup *old_chain = make_cleanup (xfree, buf2); |
085dd6e6 | 8722 | |
c906108c SS |
8723 | int ch; |
8724 | int tcount = 0; | |
8725 | char *p; | |
8726 | ||
e24a49d8 PA |
8727 | /* Catch cases like trying to read memory or listing threads while |
8728 | we're waiting for a stop reply. The remote server wouldn't be | |
8729 | ready to handle this request, so we'd hang and timeout. We don't | |
8730 | have to worry about this in synchronous mode, because in that | |
8731 | case it's not possible to issue a command while the target is | |
74531fed PA |
8732 | running. This is not a problem in non-stop mode, because in that |
8733 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8734 | if (!target_is_non_stop_p () |
8735 | && target_is_async_p () | |
8736 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8737 | { |
8738 | error (_("Cannot execute this command while the target is running.\n" | |
8739 | "Use the \"interrupt\" command to stop the target\n" | |
8740 | "and then try again.")); | |
8741 | } | |
e24a49d8 | 8742 | |
2d717e4f DJ |
8743 | /* We're sending out a new packet. Make sure we don't look at a |
8744 | stale cached response. */ | |
8745 | rs->cached_wait_status = 0; | |
8746 | ||
c906108c SS |
8747 | /* Copy the packet into buffer BUF2, encapsulating it |
8748 | and giving it a checksum. */ | |
8749 | ||
c906108c SS |
8750 | p = buf2; |
8751 | *p++ = '$'; | |
8752 | ||
8753 | for (i = 0; i < cnt; i++) | |
8754 | { | |
8755 | csum += buf[i]; | |
8756 | *p++ = buf[i]; | |
8757 | } | |
8758 | *p++ = '#'; | |
8759 | *p++ = tohex ((csum >> 4) & 0xf); | |
8760 | *p++ = tohex (csum & 0xf); | |
8761 | ||
8762 | /* Send it over and over until we get a positive ack. */ | |
8763 | ||
8764 | while (1) | |
8765 | { | |
8766 | int started_error_output = 0; | |
8767 | ||
8768 | if (remote_debug) | |
8769 | { | |
8770 | *p = '\0'; | |
b3ced9ba | 8771 | |
6f8976bf YQ |
8772 | int len = (int) (p - buf2); |
8773 | ||
8774 | std::string str | |
8775 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
8776 | ||
8777 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
8778 | ||
8779 | if (str.length () > REMOTE_DEBUG_MAX_CHAR) | |
8780 | { | |
8781 | fprintf_unfiltered (gdb_stdlog, "[%zu bytes omitted]", | |
8782 | str.length () - REMOTE_DEBUG_MAX_CHAR); | |
8783 | } | |
8784 | ||
8785 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 8786 | |
0f71a2f6 | 8787 | gdb_flush (gdb_stdlog); |
c906108c | 8788 | } |
c33e31fd | 8789 | remote_serial_write (buf2, p - buf2); |
c906108c | 8790 | |
a6f3e723 SL |
8791 | /* If this is a no acks version of the remote protocol, send the |
8792 | packet and move on. */ | |
8793 | if (rs->noack_mode) | |
8794 | break; | |
8795 | ||
74531fed PA |
8796 | /* Read until either a timeout occurs (-2) or '+' is read. |
8797 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8798 | while (1) |
8799 | { | |
8800 | ch = readchar (remote_timeout); | |
8801 | ||
c5aa993b | 8802 | if (remote_debug) |
c906108c SS |
8803 | { |
8804 | switch (ch) | |
8805 | { | |
8806 | case '+': | |
1216fa2c | 8807 | case '-': |
c906108c SS |
8808 | case SERIAL_TIMEOUT: |
8809 | case '$': | |
74531fed | 8810 | case '%': |
c906108c SS |
8811 | if (started_error_output) |
8812 | { | |
8813 | putchar_unfiltered ('\n'); | |
8814 | started_error_output = 0; | |
8815 | } | |
8816 | } | |
8817 | } | |
8818 | ||
8819 | switch (ch) | |
8820 | { | |
8821 | case '+': | |
8822 | if (remote_debug) | |
0f71a2f6 | 8823 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 8824 | do_cleanups (old_chain); |
c906108c | 8825 | return 1; |
1216fa2c AC |
8826 | case '-': |
8827 | if (remote_debug) | |
8828 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8829 | /* FALLTHROUGH */ |
c906108c | 8830 | case SERIAL_TIMEOUT: |
c5aa993b | 8831 | tcount++; |
c906108c | 8832 | if (tcount > 3) |
a5c0808e PA |
8833 | { |
8834 | do_cleanups (old_chain); | |
8835 | return 0; | |
8836 | } | |
23860348 | 8837 | break; /* Retransmit buffer. */ |
c906108c SS |
8838 | case '$': |
8839 | { | |
40e3f985 | 8840 | if (remote_debug) |
2bc416ba | 8841 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8842 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8843 | /* It's probably an old response sent because an ACK |
8844 | was lost. Gobble up the packet and ack it so it | |
8845 | doesn't get retransmitted when we resend this | |
8846 | packet. */ | |
6d820c5c | 8847 | skip_frame (); |
c33e31fd | 8848 | remote_serial_write ("+", 1); |
23860348 | 8849 | continue; /* Now, go look for +. */ |
c906108c | 8850 | } |
74531fed PA |
8851 | |
8852 | case '%': | |
8853 | { | |
8854 | int val; | |
8855 | ||
8856 | /* If we got a notification, handle it, and go back to looking | |
8857 | for an ack. */ | |
8858 | /* We've found the start of a notification. Now | |
8859 | collect the data. */ | |
8860 | val = read_frame (&rs->buf, &rs->buf_size); | |
8861 | if (val >= 0) | |
8862 | { | |
8863 | if (remote_debug) | |
8864 | { | |
b3ced9ba | 8865 | std::string str = escape_buffer (rs->buf, val); |
6e5abd65 | 8866 | |
6e5abd65 PA |
8867 | fprintf_unfiltered (gdb_stdlog, |
8868 | " Notification received: %s\n", | |
b3ced9ba | 8869 | str.c_str ()); |
74531fed | 8870 | } |
5965e028 | 8871 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8872 | /* We're in sync now, rewait for the ack. */ |
8873 | tcount = 0; | |
8874 | } | |
8875 | else | |
8876 | { | |
8877 | if (remote_debug) | |
8878 | { | |
8879 | if (!started_error_output) | |
8880 | { | |
8881 | started_error_output = 1; | |
8882 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8883 | } | |
8884 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8885 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8886 | } | |
8887 | } | |
8888 | continue; | |
8889 | } | |
8890 | /* fall-through */ | |
c906108c SS |
8891 | default: |
8892 | if (remote_debug) | |
8893 | { | |
8894 | if (!started_error_output) | |
8895 | { | |
8896 | started_error_output = 1; | |
0f71a2f6 | 8897 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8898 | } |
0f71a2f6 | 8899 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8900 | } |
8901 | continue; | |
8902 | } | |
23860348 | 8903 | break; /* Here to retransmit. */ |
c906108c SS |
8904 | } |
8905 | ||
8906 | #if 0 | |
8907 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8908 | able to get out next time we call QUIT, without anything as |
8909 | violent as interrupt_query. If we want to provide a way out of | |
8910 | here without getting to the next QUIT, it should be based on | |
8911 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8912 | if (quit_flag) |
8913 | { | |
8914 | quit_flag = 0; | |
8915 | interrupt_query (); | |
8916 | } | |
8917 | #endif | |
8918 | } | |
a5c0808e PA |
8919 | |
8920 | do_cleanups (old_chain); | |
a6f3e723 | 8921 | return 0; |
c906108c SS |
8922 | } |
8923 | ||
6d820c5c DJ |
8924 | /* Come here after finding the start of a frame when we expected an |
8925 | ack. Do our best to discard the rest of this packet. */ | |
8926 | ||
8927 | static void | |
8928 | skip_frame (void) | |
8929 | { | |
8930 | int c; | |
8931 | ||
8932 | while (1) | |
8933 | { | |
8934 | c = readchar (remote_timeout); | |
8935 | switch (c) | |
8936 | { | |
8937 | case SERIAL_TIMEOUT: | |
8938 | /* Nothing we can do. */ | |
8939 | return; | |
8940 | case '#': | |
8941 | /* Discard the two bytes of checksum and stop. */ | |
8942 | c = readchar (remote_timeout); | |
8943 | if (c >= 0) | |
8944 | c = readchar (remote_timeout); | |
8945 | ||
8946 | return; | |
8947 | case '*': /* Run length encoding. */ | |
8948 | /* Discard the repeat count. */ | |
8949 | c = readchar (remote_timeout); | |
8950 | if (c < 0) | |
8951 | return; | |
8952 | break; | |
8953 | default: | |
8954 | /* A regular character. */ | |
8955 | break; | |
8956 | } | |
8957 | } | |
8958 | } | |
8959 | ||
c906108c | 8960 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8961 | into *BUF, verifying the checksum, length, and handling run-length |
8962 | compression. NUL terminate the buffer. If there is not enough room, | |
8963 | expand *BUF using xrealloc. | |
c906108c | 8964 | |
c2d11a7d JM |
8965 | Returns -1 on error, number of characters in buffer (ignoring the |
8966 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8967 | SERIAL status indications). */ |
c2d11a7d JM |
8968 | |
8969 | static long | |
6d820c5c DJ |
8970 | read_frame (char **buf_p, |
8971 | long *sizeof_buf) | |
c906108c SS |
8972 | { |
8973 | unsigned char csum; | |
c2d11a7d | 8974 | long bc; |
c906108c | 8975 | int c; |
6d820c5c | 8976 | char *buf = *buf_p; |
a6f3e723 | 8977 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8978 | |
8979 | csum = 0; | |
c2d11a7d | 8980 | bc = 0; |
c906108c SS |
8981 | |
8982 | while (1) | |
8983 | { | |
8984 | c = readchar (remote_timeout); | |
c906108c SS |
8985 | switch (c) |
8986 | { | |
8987 | case SERIAL_TIMEOUT: | |
8988 | if (remote_debug) | |
0f71a2f6 | 8989 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8990 | return -1; |
c906108c SS |
8991 | case '$': |
8992 | if (remote_debug) | |
0f71a2f6 JM |
8993 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8994 | gdb_stdlog); | |
23860348 | 8995 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8996 | case '#': |
8997 | { | |
8998 | unsigned char pktcsum; | |
e1b09194 AC |
8999 | int check_0 = 0; |
9000 | int check_1 = 0; | |
c906108c | 9001 | |
c2d11a7d | 9002 | buf[bc] = '\0'; |
c906108c | 9003 | |
e1b09194 AC |
9004 | check_0 = readchar (remote_timeout); |
9005 | if (check_0 >= 0) | |
9006 | check_1 = readchar (remote_timeout); | |
802188a7 | 9007 | |
e1b09194 AC |
9008 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9009 | { | |
9010 | if (remote_debug) | |
2bc416ba | 9011 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9012 | gdb_stdlog); |
e1b09194 AC |
9013 | return -1; |
9014 | } | |
9015 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9016 | { |
9017 | if (remote_debug) | |
2bc416ba | 9018 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9019 | gdb_stdlog); |
40e3f985 FN |
9020 | return -1; |
9021 | } | |
c906108c | 9022 | |
a6f3e723 SL |
9023 | /* Don't recompute the checksum; with no ack packets we |
9024 | don't have any way to indicate a packet retransmission | |
9025 | is necessary. */ | |
9026 | if (rs->noack_mode) | |
9027 | return bc; | |
9028 | ||
e1b09194 | 9029 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9030 | if (csum == pktcsum) |
c2d11a7d | 9031 | return bc; |
c906108c | 9032 | |
c5aa993b | 9033 | if (remote_debug) |
c906108c | 9034 | { |
b3ced9ba | 9035 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9036 | |
6e5abd65 | 9037 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9038 | "Bad checksum, sentsum=0x%x, " |
9039 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9040 | pktcsum, csum, str.c_str ()); |
c906108c | 9041 | } |
c2d11a7d | 9042 | /* Number of characters in buffer ignoring trailing |
23860348 | 9043 | NULL. */ |
c2d11a7d | 9044 | return -1; |
c906108c | 9045 | } |
23860348 | 9046 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9047 | { |
9048 | int repeat; | |
c906108c | 9049 | |
a744cf53 | 9050 | csum += c; |
b4501125 AC |
9051 | c = readchar (remote_timeout); |
9052 | csum += c; | |
23860348 | 9053 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9054 | |
23860348 | 9055 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9056 | |
6d820c5c | 9057 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9058 | { |
6d820c5c DJ |
9059 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
9060 | { | |
9061 | /* Make some more room in the buffer. */ | |
9062 | *sizeof_buf += repeat; | |
224c3ddb | 9063 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
9064 | buf = *buf_p; |
9065 | } | |
9066 | ||
c2d11a7d JM |
9067 | memset (&buf[bc], buf[bc - 1], repeat); |
9068 | bc += repeat; | |
c2c6d25f JM |
9069 | continue; |
9070 | } | |
9071 | ||
c2d11a7d | 9072 | buf[bc] = '\0'; |
6d820c5c | 9073 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9074 | return -1; |
c2c6d25f | 9075 | } |
c906108c | 9076 | default: |
6d820c5c | 9077 | if (bc >= *sizeof_buf - 1) |
c906108c | 9078 | { |
6d820c5c DJ |
9079 | /* Make some more room in the buffer. */ |
9080 | *sizeof_buf *= 2; | |
224c3ddb | 9081 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 9082 | buf = *buf_p; |
c906108c SS |
9083 | } |
9084 | ||
6d820c5c DJ |
9085 | buf[bc++] = c; |
9086 | csum += c; | |
9087 | continue; | |
c906108c SS |
9088 | } |
9089 | } | |
9090 | } | |
9091 | ||
9092 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9093 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9094 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9095 | rather than timing out; this is used (in synchronous mode) to wait | |
9096 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
9097 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9098 | don't have to change all the calls to getpkt to deal with the | |
9099 | return value, because at the moment I don't know what the right | |
23860348 | 9100 | thing to do it for those. */ |
c906108c | 9101 | void |
6d820c5c DJ |
9102 | getpkt (char **buf, |
9103 | long *sizeof_buf, | |
c2d11a7d | 9104 | int forever) |
d9fcf2fb | 9105 | { |
54887903 | 9106 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
9107 | } |
9108 | ||
9109 | ||
9110 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
9111 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
9112 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
9113 | rather than timing out; this is used (in synchronous mode) to wait | |
9114 | for a target that is is executing user code to stop. If FOREVER == | |
9115 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
9116 | indication of this to the caller. Otherwise return the number of |
9117 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
9118 | enough reason to return to the caller. *IS_NOTIF is an output |
9119 | boolean that indicates whether *BUF holds a notification or not | |
9120 | (a regular packet). */ | |
74531fed | 9121 | |
3172dc30 | 9122 | static int |
74531fed | 9123 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 9124 | int expecting_notif, int *is_notif) |
c906108c | 9125 | { |
2d717e4f | 9126 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9127 | int c; |
9128 | int tries; | |
9129 | int timeout; | |
df4b58fe | 9130 | int val = -1; |
c906108c | 9131 | |
2d717e4f DJ |
9132 | /* We're reading a new response. Make sure we don't look at a |
9133 | previously cached response. */ | |
9134 | rs->cached_wait_status = 0; | |
9135 | ||
6d820c5c | 9136 | strcpy (*buf, "timeout"); |
c906108c SS |
9137 | |
9138 | if (forever) | |
74531fed PA |
9139 | timeout = watchdog > 0 ? watchdog : -1; |
9140 | else if (expecting_notif) | |
9141 | timeout = 0; /* There should already be a char in the buffer. If | |
9142 | not, bail out. */ | |
c906108c SS |
9143 | else |
9144 | timeout = remote_timeout; | |
9145 | ||
9146 | #define MAX_TRIES 3 | |
9147 | ||
74531fed PA |
9148 | /* Process any number of notifications, and then return when |
9149 | we get a packet. */ | |
9150 | for (;;) | |
c906108c | 9151 | { |
d9c43928 | 9152 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9153 | times. */ |
9154 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9155 | { |
74531fed PA |
9156 | /* This can loop forever if the remote side sends us |
9157 | characters continuously, but if it pauses, we'll get | |
9158 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9159 | we'll count that as a retry. | |
9160 | ||
9161 | Note that even when forever is set, we will only wait | |
9162 | forever prior to the start of a packet. After that, we | |
9163 | expect characters to arrive at a brisk pace. They should | |
9164 | show up within remote_timeout intervals. */ | |
9165 | do | |
9166 | c = readchar (timeout); | |
9167 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9168 | |
9169 | if (c == SERIAL_TIMEOUT) | |
9170 | { | |
74531fed PA |
9171 | if (expecting_notif) |
9172 | return -1; /* Don't complain, it's normal to not get | |
9173 | anything in this case. */ | |
9174 | ||
23860348 | 9175 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9176 | { |
78a095c3 | 9177 | remote_unpush_target (); |
598d3636 JK |
9178 | throw_error (TARGET_CLOSE_ERROR, |
9179 | _("Watchdog timeout has expired. " | |
9180 | "Target detached.")); | |
c906108c | 9181 | } |
c906108c | 9182 | if (remote_debug) |
0f71a2f6 | 9183 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9184 | } |
74531fed PA |
9185 | else |
9186 | { | |
9187 | /* We've found the start of a packet or notification. | |
9188 | Now collect the data. */ | |
9189 | val = read_frame (buf, sizeof_buf); | |
9190 | if (val >= 0) | |
9191 | break; | |
9192 | } | |
9193 | ||
c33e31fd | 9194 | remote_serial_write ("-", 1); |
c906108c | 9195 | } |
c906108c | 9196 | |
74531fed PA |
9197 | if (tries > MAX_TRIES) |
9198 | { | |
9199 | /* We have tried hard enough, and just can't receive the | |
9200 | packet/notification. Give up. */ | |
9201 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9202 | |
74531fed PA |
9203 | /* Skip the ack char if we're in no-ack mode. */ |
9204 | if (!rs->noack_mode) | |
c33e31fd | 9205 | remote_serial_write ("+", 1); |
74531fed PA |
9206 | return -1; |
9207 | } | |
c906108c | 9208 | |
74531fed PA |
9209 | /* If we got an ordinary packet, return that to our caller. */ |
9210 | if (c == '$') | |
c906108c SS |
9211 | { |
9212 | if (remote_debug) | |
43e526b9 | 9213 | { |
6f8976bf YQ |
9214 | std::string str |
9215 | = escape_buffer (*buf, | |
9216 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); | |
9217 | ||
9218 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9219 | str.c_str ()); | |
9220 | ||
9221 | if (str.length () > REMOTE_DEBUG_MAX_CHAR) | |
9222 | { | |
9223 | fprintf_unfiltered (gdb_stdlog, "[%zu bytes omitted]", | |
9224 | str.length () - REMOTE_DEBUG_MAX_CHAR); | |
9225 | } | |
6e5abd65 | 9226 | |
6f8976bf | 9227 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9228 | } |
a6f3e723 SL |
9229 | |
9230 | /* Skip the ack char if we're in no-ack mode. */ | |
9231 | if (!rs->noack_mode) | |
c33e31fd | 9232 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9233 | if (is_notif != NULL) |
9234 | *is_notif = 0; | |
0876f84a | 9235 | return val; |
c906108c SS |
9236 | } |
9237 | ||
74531fed PA |
9238 | /* If we got a notification, handle it, and go back to looking |
9239 | for a packet. */ | |
9240 | else | |
9241 | { | |
9242 | gdb_assert (c == '%'); | |
9243 | ||
9244 | if (remote_debug) | |
9245 | { | |
b3ced9ba | 9246 | std::string str = escape_buffer (*buf, val); |
6e5abd65 | 9247 | |
6e5abd65 PA |
9248 | fprintf_unfiltered (gdb_stdlog, |
9249 | " Notification received: %s\n", | |
b3ced9ba | 9250 | str.c_str ()); |
74531fed | 9251 | } |
fee9eda9 YQ |
9252 | if (is_notif != NULL) |
9253 | *is_notif = 1; | |
c906108c | 9254 | |
5965e028 | 9255 | handle_notification (rs->notif_state, *buf); |
c906108c | 9256 | |
74531fed | 9257 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9258 | |
74531fed | 9259 | if (expecting_notif) |
fee9eda9 | 9260 | return val; |
74531fed PA |
9261 | } |
9262 | } | |
9263 | } | |
9264 | ||
9265 | static int | |
9266 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
9267 | { | |
fee9eda9 | 9268 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
9269 | } |
9270 | ||
9271 | static int | |
fee9eda9 YQ |
9272 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
9273 | int *is_notif) | |
74531fed | 9274 | { |
fee9eda9 YQ |
9275 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
9276 | is_notif); | |
c906108c | 9277 | } |
74531fed | 9278 | |
cbb8991c DB |
9279 | /* Check whether EVENT is a fork event for the process specified |
9280 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
9281 | ||
9282 | static int | |
9283 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
9284 | QUEUE_ITER (stop_reply_p) *iter, | |
9285 | stop_reply_p event, | |
9286 | void *data) | |
9287 | { | |
19ba03f4 | 9288 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
9289 | int parent_pid = *(int *) param->input; |
9290 | ||
9291 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
9292 | { | |
9293 | struct remote_state *rs = get_remote_state (); | |
9294 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
9295 | int res; | |
9296 | ||
9297 | res = remote_vkill (child_pid, rs); | |
9298 | if (res != 0) | |
9299 | error (_("Can't kill fork child process %d"), child_pid); | |
9300 | } | |
9301 | ||
9302 | return 1; | |
9303 | } | |
9304 | ||
9305 | /* Kill any new fork children of process PID that haven't been | |
9306 | processed by follow_fork. */ | |
9307 | ||
9308 | static void | |
9309 | kill_new_fork_children (int pid, struct remote_state *rs) | |
9310 | { | |
9311 | struct thread_info *thread; | |
9312 | struct notif_client *notif = ¬if_client_stop; | |
9313 | struct queue_iter_param param; | |
9314 | ||
9315 | /* Kill the fork child threads of any threads in process PID | |
9316 | that are stopped at a fork event. */ | |
9317 | ALL_NON_EXITED_THREADS (thread) | |
9318 | { | |
9319 | struct target_waitstatus *ws = &thread->pending_follow; | |
9320 | ||
9321 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9322 | { | |
9323 | struct remote_state *rs = get_remote_state (); | |
9324 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
9325 | int res; | |
9326 | ||
9327 | res = remote_vkill (child_pid, rs); | |
9328 | if (res != 0) | |
9329 | error (_("Can't kill fork child process %d"), child_pid); | |
9330 | } | |
9331 | } | |
9332 | ||
9333 | /* Check for any pending fork events (not reported or processed yet) | |
9334 | in process PID and kill those fork child threads as well. */ | |
9335 | remote_notif_get_pending_events (notif); | |
9336 | param.input = &pid; | |
9337 | param.output = NULL; | |
9338 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
9339 | kill_child_of_pending_fork, ¶m); | |
9340 | } | |
9341 | ||
c906108c | 9342 | \f |
8020350c DB |
9343 | /* Target hook to kill the current inferior. */ |
9344 | ||
c906108c | 9345 | static void |
7d85a9c0 | 9346 | remote_kill (struct target_ops *ops) |
43ff13b4 | 9347 | { |
8020350c DB |
9348 | int res = -1; |
9349 | int pid = ptid_get_pid (inferior_ptid); | |
9350 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 9351 | |
8020350c | 9352 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9353 | { |
8020350c DB |
9354 | /* If we're stopped while forking and we haven't followed yet, |
9355 | kill the child task. We need to do this before killing the | |
9356 | parent task because if this is a vfork then the parent will | |
9357 | be sleeping. */ | |
9358 | kill_new_fork_children (pid, rs); | |
9359 | ||
9360 | res = remote_vkill (pid, rs); | |
9361 | if (res == 0) | |
0fdf84ca | 9362 | { |
bc1e6c81 | 9363 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9364 | return; |
9365 | } | |
8020350c | 9366 | } |
0fdf84ca | 9367 | |
8020350c DB |
9368 | /* If we are in 'target remote' mode and we are killing the only |
9369 | inferior, then we will tell gdbserver to exit and unpush the | |
9370 | target. */ | |
9371 | if (res == -1 && !remote_multi_process_p (rs) | |
9372 | && number_of_live_inferiors () == 1) | |
9373 | { | |
9374 | remote_kill_k (); | |
9375 | ||
9376 | /* We've killed the remote end, we get to mourn it. If we are | |
9377 | not in extended mode, mourning the inferior also unpushes | |
9378 | remote_ops from the target stack, which closes the remote | |
9379 | connection. */ | |
bc1e6c81 | 9380 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9381 | |
9382 | return; | |
0fdf84ca | 9383 | } |
43ff13b4 | 9384 | |
8020350c | 9385 | error (_("Can't kill process")); |
43ff13b4 JM |
9386 | } |
9387 | ||
8020350c DB |
9388 | /* Send a kill request to the target using the 'vKill' packet. */ |
9389 | ||
82f73884 PA |
9390 | static int |
9391 | remote_vkill (int pid, struct remote_state *rs) | |
9392 | { | |
4082afcc | 9393 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9394 | return -1; |
9395 | ||
9396 | /* Tell the remote target to detach. */ | |
bba74b36 | 9397 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
9398 | putpkt (rs->buf); |
9399 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9400 | ||
4082afcc PA |
9401 | switch (packet_ok (rs->buf, |
9402 | &remote_protocol_packets[PACKET_vKill])) | |
9403 | { | |
9404 | case PACKET_OK: | |
9405 | return 0; | |
9406 | case PACKET_ERROR: | |
9407 | return 1; | |
9408 | case PACKET_UNKNOWN: | |
9409 | return -1; | |
9410 | default: | |
9411 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9412 | } | |
82f73884 PA |
9413 | } |
9414 | ||
8020350c DB |
9415 | /* Send a kill request to the target using the 'k' packet. */ |
9416 | ||
82f73884 | 9417 | static void |
8020350c | 9418 | remote_kill_k (void) |
82f73884 | 9419 | { |
8020350c DB |
9420 | /* Catch errors so the user can quit from gdb even when we |
9421 | aren't on speaking terms with the remote system. */ | |
9422 | TRY | |
82f73884 | 9423 | { |
82f73884 | 9424 | putpkt ("k"); |
82f73884 | 9425 | } |
8020350c DB |
9426 | CATCH (ex, RETURN_MASK_ERROR) |
9427 | { | |
9428 | if (ex.error == TARGET_CLOSE_ERROR) | |
9429 | { | |
9430 | /* If we got an (EOF) error that caused the target | |
9431 | to go away, then we're done, that's what we wanted. | |
9432 | "k" is susceptible to cause a premature EOF, given | |
9433 | that the remote server isn't actually required to | |
9434 | reply to "k", and it can happen that it doesn't | |
9435 | even get to reply ACK to the "k". */ | |
9436 | return; | |
9437 | } | |
82f73884 | 9438 | |
8020350c DB |
9439 | /* Otherwise, something went wrong. We didn't actually kill |
9440 | the target. Just propagate the exception, and let the | |
9441 | user or higher layers decide what to do. */ | |
9442 | throw_exception (ex); | |
9443 | } | |
9444 | END_CATCH | |
82f73884 PA |
9445 | } |
9446 | ||
c906108c | 9447 | static void |
20f796c9 | 9448 | remote_mourn (struct target_ops *target) |
c906108c | 9449 | { |
8020350c | 9450 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9451 | |
8020350c DB |
9452 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9453 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9454 | { | |
9455 | unpush_target (target); | |
c906108c | 9456 | |
8020350c DB |
9457 | /* remote_close takes care of doing most of the clean up. */ |
9458 | generic_mourn_inferior (); | |
9459 | return; | |
9460 | } | |
c906108c | 9461 | |
e24a49d8 PA |
9462 | /* In case we got here due to an error, but we're going to stay |
9463 | connected. */ | |
9464 | rs->waiting_for_stop_reply = 0; | |
9465 | ||
dc1981d7 PA |
9466 | /* If the current general thread belonged to the process we just |
9467 | detached from or has exited, the remote side current general | |
9468 | thread becomes undefined. Considering a case like this: | |
9469 | ||
9470 | - We just got here due to a detach. | |
9471 | - The process that we're detaching from happens to immediately | |
9472 | report a global breakpoint being hit in non-stop mode, in the | |
9473 | same thread we had selected before. | |
9474 | - GDB attaches to this process again. | |
9475 | - This event happens to be the next event we handle. | |
9476 | ||
9477 | GDB would consider that the current general thread didn't need to | |
9478 | be set on the stub side (with Hg), since for all it knew, | |
9479 | GENERAL_THREAD hadn't changed. | |
9480 | ||
9481 | Notice that although in all-stop mode, the remote server always | |
9482 | sets the current thread to the thread reporting the stop event, | |
9483 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9484 | not* change the current thread when reporting a breakpoint hit, | |
9485 | due to the decoupling of event reporting and event handling. | |
9486 | ||
9487 | To keep things simple, we always invalidate our notion of the | |
9488 | current thread. */ | |
47f8a51d | 9489 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9490 | |
8020350c | 9491 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9492 | generic_mourn_inferior (); |
9493 | ||
d729566a | 9494 | if (!have_inferiors ()) |
2d717e4f | 9495 | { |
82f73884 PA |
9496 | if (!remote_multi_process_p (rs)) |
9497 | { | |
9498 | /* Check whether the target is running now - some remote stubs | |
9499 | automatically restart after kill. */ | |
9500 | putpkt ("?"); | |
9501 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9502 | ||
9503 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9504 | { | |
3e43a32a MS |
9505 | /* Assume that the target has been restarted. Set |
9506 | inferior_ptid so that bits of core GDB realizes | |
9507 | there's something here, e.g., so that the user can | |
9508 | say "kill" again. */ | |
82f73884 PA |
9509 | inferior_ptid = magic_null_ptid; |
9510 | } | |
82f73884 | 9511 | } |
2d717e4f DJ |
9512 | } |
9513 | } | |
c906108c | 9514 | |
03583c20 | 9515 | static int |
2bfc0540 | 9516 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9517 | { |
4082afcc | 9518 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9519 | } |
9520 | ||
9521 | static void | |
9522 | extended_remote_disable_randomization (int val) | |
9523 | { | |
9524 | struct remote_state *rs = get_remote_state (); | |
9525 | char *reply; | |
9526 | ||
bba74b36 YQ |
9527 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9528 | val); | |
03583c20 UW |
9529 | putpkt (rs->buf); |
9530 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9531 | if (*reply == '\0') | |
9532 | error (_("Target does not support QDisableRandomization.")); | |
9533 | if (strcmp (reply, "OK") != 0) | |
9534 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9535 | } | |
9536 | ||
2d717e4f | 9537 | static int |
7c5ded6a | 9538 | extended_remote_run (const std::string &args) |
2d717e4f DJ |
9539 | { |
9540 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9541 | int len; |
94585166 | 9542 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9543 | |
2d717e4f DJ |
9544 | /* If the user has disabled vRun support, or we have detected that |
9545 | support is not available, do not try it. */ | |
4082afcc | 9546 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9547 | return -1; |
424163ea | 9548 | |
2d717e4f DJ |
9549 | strcpy (rs->buf, "vRun;"); |
9550 | len = strlen (rs->buf); | |
c906108c | 9551 | |
2d717e4f DJ |
9552 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9553 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9554 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9555 | strlen (remote_exec_file)); | |
2d717e4f | 9556 | |
7c5ded6a | 9557 | if (!args.empty ()) |
2d717e4f | 9558 | { |
2d717e4f | 9559 | int i; |
2d717e4f | 9560 | |
773a1edc | 9561 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9562 | for (i = 0; argv[i] != NULL; i++) |
9563 | { | |
9564 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9565 | error (_("Argument list too long for run packet")); | |
9566 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9567 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9568 | strlen (argv[i])); | |
2d717e4f | 9569 | } |
2d717e4f DJ |
9570 | } |
9571 | ||
9572 | rs->buf[len++] = '\0'; | |
9573 | ||
9574 | putpkt (rs->buf); | |
9575 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9576 | ||
4082afcc | 9577 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9578 | { |
4082afcc | 9579 | case PACKET_OK: |
3405876a | 9580 | /* We have a wait response. All is well. */ |
2d717e4f | 9581 | return 0; |
4082afcc PA |
9582 | case PACKET_UNKNOWN: |
9583 | return -1; | |
9584 | case PACKET_ERROR: | |
2d717e4f DJ |
9585 | if (remote_exec_file[0] == '\0') |
9586 | error (_("Running the default executable on the remote target failed; " | |
9587 | "try \"set remote exec-file\"?")); | |
9588 | else | |
9589 | error (_("Running \"%s\" on the remote target failed"), | |
9590 | remote_exec_file); | |
4082afcc PA |
9591 | default: |
9592 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9593 | } |
c906108c SS |
9594 | } |
9595 | ||
0a2dde4a SDJ |
9596 | /* Helper function to send set/unset environment packets. ACTION is |
9597 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9598 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9599 | sent. */ | |
9600 | ||
9601 | static void | |
9602 | send_environment_packet (struct remote_state *rs, | |
9603 | const char *action, | |
9604 | const char *packet, | |
9605 | const char *value) | |
9606 | { | |
9607 | /* Convert the environment variable to an hex string, which | |
9608 | is the best format to be transmitted over the wire. */ | |
9609 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9610 | strlen (value)); | |
9611 | ||
9612 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9613 | "%s:%s", packet, encoded_value.c_str ()); | |
9614 | ||
9615 | putpkt (rs->buf); | |
9616 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9617 | if (strcmp (rs->buf, "OK") != 0) | |
9618 | warning (_("Unable to %s environment variable '%s' on remote."), | |
9619 | action, value); | |
9620 | } | |
9621 | ||
9622 | /* Helper function to handle the QEnvironment* packets. */ | |
9623 | ||
9624 | static void | |
9625 | extended_remote_environment_support (struct remote_state *rs) | |
9626 | { | |
9627 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) | |
9628 | { | |
9629 | putpkt ("QEnvironmentReset"); | |
9630 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9631 | if (strcmp (rs->buf, "OK") != 0) | |
9632 | warning (_("Unable to reset environment on remote.")); | |
9633 | } | |
9634 | ||
9635 | gdb_environ *e = ¤t_inferior ()->environment; | |
9636 | ||
9637 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9638 | for (const std::string &el : e->user_set_env ()) | |
9639 | send_environment_packet (rs, "set", "QEnvironmentHexEncoded", | |
9640 | el.c_str ()); | |
9641 | ||
9642 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9643 | for (const std::string &el : e->user_unset_env ()) | |
9644 | send_environment_packet (rs, "unset", "QEnvironmentUnset", el.c_str ()); | |
9645 | } | |
9646 | ||
2d717e4f DJ |
9647 | /* In the extended protocol we want to be able to do things like |
9648 | "run" and have them basically work as expected. So we need | |
9649 | a special create_inferior function. We support changing the | |
9650 | executable file and the command line arguments, but not the | |
9651 | environment. */ | |
9652 | ||
43ff13b4 | 9653 | static void |
77a19445 | 9654 | extended_remote_create_inferior (struct target_ops *ops, |
7c5ded6a SDJ |
9655 | const char *exec_file, |
9656 | const std::string &args, | |
77a19445 | 9657 | char **env, int from_tty) |
43ff13b4 | 9658 | { |
3405876a PA |
9659 | int run_worked; |
9660 | char *stop_reply; | |
9661 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9662 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9663 | |
43ff13b4 | 9664 | /* If running asynchronously, register the target file descriptor |
23860348 | 9665 | with the event loop. */ |
75c99385 | 9666 | if (target_can_async_p ()) |
6a3753b3 | 9667 | target_async (1); |
43ff13b4 | 9668 | |
03583c20 | 9669 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9670 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9671 | extended_remote_disable_randomization (disable_randomization); |
9672 | ||
aefd8b33 SDJ |
9673 | /* If startup-with-shell is on, we inform gdbserver to start the |
9674 | remote inferior using a shell. */ | |
9675 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
9676 | { | |
9677 | xsnprintf (rs->buf, get_remote_packet_size (), | |
9678 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); | |
9679 | putpkt (rs->buf); | |
9680 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9681 | if (strcmp (rs->buf, "OK") != 0) | |
9682 | error (_("\ | |
9683 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
9684 | rs->buf); | |
9685 | } | |
9686 | ||
0a2dde4a SDJ |
9687 | extended_remote_environment_support (rs); |
9688 | ||
43ff13b4 | 9689 | /* Now restart the remote server. */ |
3405876a PA |
9690 | run_worked = extended_remote_run (args) != -1; |
9691 | if (!run_worked) | |
2d717e4f DJ |
9692 | { |
9693 | /* vRun was not supported. Fail if we need it to do what the | |
9694 | user requested. */ | |
9695 | if (remote_exec_file[0]) | |
9696 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 9697 | if (!args.empty ()) |
2d717e4f | 9698 | error (_("Remote target does not support \"set args\" or run <ARGS>")); |
43ff13b4 | 9699 | |
2d717e4f DJ |
9700 | /* Fall back to "R". */ |
9701 | extended_remote_restart (); | |
9702 | } | |
424163ea | 9703 | |
6c95b8df PA |
9704 | if (!have_inferiors ()) |
9705 | { | |
9706 | /* Clean up from the last time we ran, before we mark the target | |
9707 | running again. This will mark breakpoints uninserted, and | |
9708 | get_offsets may insert breakpoints. */ | |
9709 | init_thread_list (); | |
9710 | init_wait_for_inferior (); | |
9711 | } | |
45280a52 | 9712 | |
3405876a PA |
9713 | /* vRun's success return is a stop reply. */ |
9714 | stop_reply = run_worked ? rs->buf : NULL; | |
9715 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9716 | |
2d717e4f DJ |
9717 | /* Get updated offsets, if the stub uses qOffsets. */ |
9718 | get_offsets (); | |
2d717e4f | 9719 | } |
c906108c | 9720 | \f |
c5aa993b | 9721 | |
b775012e LM |
9722 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9723 | the list of conditions (in agent expression bytecode format), if any, the | |
9724 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9725 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9726 | |
9727 | static int | |
9728 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9729 | struct bp_target_info *bp_tgt, char *buf, |
9730 | char *buf_end) | |
b775012e | 9731 | { |
3cde5c42 | 9732 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
9733 | return 0; |
9734 | ||
9735 | buf += strlen (buf); | |
bba74b36 | 9736 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9737 | buf++; |
9738 | ||
83621223 | 9739 | /* Send conditions to the target. */ |
d538e36d | 9740 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 9741 | { |
bba74b36 | 9742 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 9743 | buf += strlen (buf); |
3cde5c42 | 9744 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
9745 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9746 | *buf = '\0'; | |
9747 | } | |
b775012e LM |
9748 | return 0; |
9749 | } | |
9750 | ||
d3ce09f5 SS |
9751 | static void |
9752 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9753 | struct bp_target_info *bp_tgt, char *buf) | |
9754 | { | |
3cde5c42 | 9755 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
9756 | return; |
9757 | ||
9758 | buf += strlen (buf); | |
9759 | ||
9760 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9761 | buf += strlen (buf); | |
9762 | ||
9763 | /* Concatenate all the agent expressions that are commands into the | |
9764 | cmds parameter. */ | |
df97be55 | 9765 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
9766 | { |
9767 | sprintf (buf, "X%x,", aexpr->len); | |
9768 | buf += strlen (buf); | |
3cde5c42 | 9769 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
9770 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
9771 | *buf = '\0'; | |
9772 | } | |
d3ce09f5 SS |
9773 | } |
9774 | ||
8181d85f DJ |
9775 | /* Insert a breakpoint. On targets that have software breakpoint |
9776 | support, we ask the remote target to do the work; on targets | |
9777 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9778 | |
9779 | static int | |
3db08215 MM |
9780 | remote_insert_breakpoint (struct target_ops *ops, |
9781 | struct gdbarch *gdbarch, | |
a6d9a66e | 9782 | struct bp_target_info *bp_tgt) |
c906108c | 9783 | { |
d471ea57 AC |
9784 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9785 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9786 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9787 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9788 | |
4082afcc | 9789 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9790 | { |
0d5ed153 | 9791 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9792 | struct remote_state *rs; |
bba74b36 | 9793 | char *p, *endbuf; |
7c0f6dcc | 9794 | int bpsize; |
4fff2411 | 9795 | |
28439a30 PA |
9796 | /* Make sure the remote is pointing at the right process, if |
9797 | necessary. */ | |
9798 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9799 | set_general_process (); | |
9800 | ||
4fff2411 JZ |
9801 | rs = get_remote_state (); |
9802 | p = rs->buf; | |
bba74b36 | 9803 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9804 | |
96baa820 JM |
9805 | *(p++) = 'Z'; |
9806 | *(p++) = '0'; | |
9807 | *(p++) = ','; | |
7c0f6dcc | 9808 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9809 | p += hexnumstr (p, addr); |
579c6ad9 | 9810 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9811 | |
efcc2da7 | 9812 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9813 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9814 | |
78eff0ec | 9815 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9816 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9817 | ||
6d820c5c DJ |
9818 | putpkt (rs->buf); |
9819 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9820 | |
6d820c5c | 9821 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9822 | { |
d471ea57 AC |
9823 | case PACKET_ERROR: |
9824 | return -1; | |
9825 | case PACKET_OK: | |
9826 | return 0; | |
9827 | case PACKET_UNKNOWN: | |
9828 | break; | |
96baa820 JM |
9829 | } |
9830 | } | |
c906108c | 9831 | |
0000e5cc PA |
9832 | /* If this breakpoint has target-side commands but this stub doesn't |
9833 | support Z0 packets, throw error. */ | |
3cde5c42 | 9834 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
9835 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
9836 | Target doesn't support breakpoints that have target side commands.")); | |
9837 | ||
3db08215 | 9838 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9839 | } |
9840 | ||
9841 | static int | |
3db08215 MM |
9842 | remote_remove_breakpoint (struct target_ops *ops, |
9843 | struct gdbarch *gdbarch, | |
73971819 PA |
9844 | struct bp_target_info *bp_tgt, |
9845 | enum remove_bp_reason reason) | |
c906108c | 9846 | { |
8181d85f | 9847 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9848 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9849 | |
4082afcc | 9850 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9851 | { |
6d820c5c | 9852 | char *p = rs->buf; |
bba74b36 | 9853 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9854 | |
28439a30 PA |
9855 | /* Make sure the remote is pointing at the right process, if |
9856 | necessary. */ | |
9857 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9858 | set_general_process (); | |
9859 | ||
96baa820 JM |
9860 | *(p++) = 'z'; |
9861 | *(p++) = '0'; | |
9862 | *(p++) = ','; | |
9863 | ||
8181d85f DJ |
9864 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9865 | p += hexnumstr (p, addr); | |
579c6ad9 | 9866 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 9867 | |
6d820c5c DJ |
9868 | putpkt (rs->buf); |
9869 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9870 | |
6d820c5c | 9871 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9872 | } |
9873 | ||
73971819 | 9874 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt, reason); |
c906108c SS |
9875 | } |
9876 | ||
f486487f | 9877 | static enum Z_packet_type |
d471ea57 AC |
9878 | watchpoint_to_Z_packet (int type) |
9879 | { | |
9880 | switch (type) | |
9881 | { | |
9882 | case hw_write: | |
bb858e6a | 9883 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9884 | break; |
9885 | case hw_read: | |
bb858e6a | 9886 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9887 | break; |
9888 | case hw_access: | |
bb858e6a | 9889 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9890 | break; |
9891 | default: | |
8e65ff28 | 9892 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9893 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9894 | } |
9895 | } | |
9896 | ||
3c3bea1c | 9897 | static int |
f486487f SM |
9898 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9899 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9900 | { |
d01949b6 | 9901 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9902 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9903 | char *p; |
d471ea57 | 9904 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9905 | |
4082afcc | 9906 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9907 | return 1; |
802188a7 | 9908 | |
28439a30 PA |
9909 | /* Make sure the remote is pointing at the right process, if |
9910 | necessary. */ | |
9911 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9912 | set_general_process (); | |
9913 | ||
bba74b36 | 9914 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9915 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9916 | addr = remote_address_masked (addr); |
9917 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9918 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9919 | |
6d820c5c DJ |
9920 | putpkt (rs->buf); |
9921 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9922 | |
6d820c5c | 9923 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9924 | { |
9925 | case PACKET_ERROR: | |
d471ea57 | 9926 | return -1; |
85d721b8 PA |
9927 | case PACKET_UNKNOWN: |
9928 | return 1; | |
d471ea57 AC |
9929 | case PACKET_OK: |
9930 | return 0; | |
9931 | } | |
8e65ff28 | 9932 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9933 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9934 | } |
9935 | ||
283002cf MR |
9936 | static int |
9937 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9938 | CORE_ADDR start, int length) | |
9939 | { | |
9940 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9941 | ||
9942 | return diff < length; | |
9943 | } | |
9944 | ||
d471ea57 | 9945 | |
3c3bea1c | 9946 | static int |
f486487f SM |
9947 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9948 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9949 | { |
d01949b6 | 9950 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9951 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9952 | char *p; |
d471ea57 AC |
9953 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9954 | ||
4082afcc | 9955 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9956 | return -1; |
802188a7 | 9957 | |
28439a30 PA |
9958 | /* Make sure the remote is pointing at the right process, if |
9959 | necessary. */ | |
9960 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9961 | set_general_process (); | |
9962 | ||
bba74b36 | 9963 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9964 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9965 | addr = remote_address_masked (addr); |
9966 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9967 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9968 | putpkt (rs->buf); |
9969 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9970 | |
6d820c5c | 9971 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9972 | { |
9973 | case PACKET_ERROR: | |
9974 | case PACKET_UNKNOWN: | |
9975 | return -1; | |
9976 | case PACKET_OK: | |
9977 | return 0; | |
9978 | } | |
8e65ff28 | 9979 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9980 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9981 | } |
9982 | ||
3c3bea1c | 9983 | |
501eef12 | 9984 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9985 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9986 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9987 | |
480a3f21 | 9988 | static int |
31568a15 TT |
9989 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9990 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9991 | { |
9992 | if (remote_hw_watchpoint_length_limit == 0) | |
9993 | return 0; | |
9994 | else if (remote_hw_watchpoint_length_limit < 0) | |
9995 | return 1; | |
9996 | else if (len <= remote_hw_watchpoint_length_limit) | |
9997 | return 1; | |
9998 | else | |
9999 | return 0; | |
10000 | } | |
10001 | ||
b9362cc7 | 10002 | static int |
5461485a | 10003 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 10004 | enum bptype type, int cnt, int ot) |
96baa820 | 10005 | { |
3c3bea1c GS |
10006 | if (type == bp_hardware_breakpoint) |
10007 | { | |
10008 | if (remote_hw_breakpoint_limit == 0) | |
10009 | return 0; | |
501eef12 AC |
10010 | else if (remote_hw_breakpoint_limit < 0) |
10011 | return 1; | |
3c3bea1c GS |
10012 | else if (cnt <= remote_hw_breakpoint_limit) |
10013 | return 1; | |
10014 | } | |
10015 | else | |
10016 | { | |
10017 | if (remote_hw_watchpoint_limit == 0) | |
10018 | return 0; | |
501eef12 AC |
10019 | else if (remote_hw_watchpoint_limit < 0) |
10020 | return 1; | |
3c3bea1c GS |
10021 | else if (ot) |
10022 | return -1; | |
10023 | else if (cnt <= remote_hw_watchpoint_limit) | |
10024 | return 1; | |
10025 | } | |
10026 | return -1; | |
10027 | } | |
10028 | ||
f7e6eed5 PA |
10029 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10030 | ||
10031 | static int | |
10032 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10033 | { | |
799a2abe | 10034 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10035 | |
799a2abe PA |
10036 | return (thread->priv != NULL |
10037 | && thread->priv->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT); | |
f7e6eed5 PA |
10038 | } |
10039 | ||
10040 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10041 | remote. */ | |
10042 | ||
10043 | static int | |
10044 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
10045 | { | |
f7e6eed5 PA |
10046 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10047 | } | |
10048 | ||
10049 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10050 | ||
10051 | static int | |
10052 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10053 | { | |
799a2abe | 10054 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10055 | |
799a2abe PA |
10056 | return (thread->priv != NULL |
10057 | && thread->priv->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT); | |
f7e6eed5 PA |
10058 | } |
10059 | ||
10060 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10061 | remote. */ | |
10062 | ||
10063 | static int | |
10064 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
10065 | { | |
f7e6eed5 PA |
10066 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10067 | } | |
10068 | ||
b9362cc7 | 10069 | static int |
6a109b6b | 10070 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 10071 | { |
799a2abe | 10072 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10073 | |
799a2abe PA |
10074 | return (thread->priv != NULL |
10075 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT); | |
3c3bea1c GS |
10076 | } |
10077 | ||
4aa7a7f5 JJ |
10078 | static int |
10079 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 10080 | { |
799a2abe | 10081 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10082 | |
799a2abe PA |
10083 | if (thread->priv != NULL |
10084 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT) | |
4aa7a7f5 | 10085 | { |
799a2abe PA |
10086 | *addr_p = thread->priv->watch_data_address; |
10087 | return 1; | |
4aa7a7f5 JJ |
10088 | } |
10089 | ||
799a2abe | 10090 | return 0; |
3c3bea1c GS |
10091 | } |
10092 | ||
10093 | ||
10094 | static int | |
23a26771 | 10095 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10096 | struct bp_target_info *bp_tgt) |
3c3bea1c | 10097 | { |
0d5ed153 | 10098 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10099 | struct remote_state *rs; |
bba74b36 | 10100 | char *p, *endbuf; |
dd61ec5c | 10101 | char *message; |
3c3bea1c | 10102 | |
4082afcc | 10103 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10104 | return -1; |
2bc416ba | 10105 | |
28439a30 PA |
10106 | /* Make sure the remote is pointing at the right process, if |
10107 | necessary. */ | |
10108 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10109 | set_general_process (); | |
10110 | ||
4fff2411 JZ |
10111 | rs = get_remote_state (); |
10112 | p = rs->buf; | |
bba74b36 | 10113 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 10114 | |
96baa820 JM |
10115 | *(p++) = 'Z'; |
10116 | *(p++) = '1'; | |
10117 | *(p++) = ','; | |
802188a7 | 10118 | |
0d5ed153 | 10119 | addr = remote_address_masked (addr); |
96baa820 | 10120 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10121 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10122 | |
efcc2da7 | 10123 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 10124 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10125 | |
78eff0ec | 10126 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
10127 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10128 | ||
6d820c5c DJ |
10129 | putpkt (rs->buf); |
10130 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 10131 | |
6d820c5c | 10132 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10133 | { |
10134 | case PACKET_ERROR: | |
dd61ec5c MW |
10135 | if (rs->buf[1] == '.') |
10136 | { | |
10137 | message = strchr (rs->buf + 2, '.'); | |
10138 | if (message) | |
0316657e | 10139 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10140 | } |
10141 | return -1; | |
d471ea57 AC |
10142 | case PACKET_UNKNOWN: |
10143 | return -1; | |
10144 | case PACKET_OK: | |
10145 | return 0; | |
10146 | } | |
8e65ff28 | 10147 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10148 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10149 | } |
10150 | ||
d471ea57 | 10151 | |
802188a7 | 10152 | static int |
a64dc96c | 10153 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 10154 | struct bp_target_info *bp_tgt) |
96baa820 | 10155 | { |
8181d85f | 10156 | CORE_ADDR addr; |
d01949b6 | 10157 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 10158 | char *p = rs->buf; |
bba74b36 | 10159 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 10160 | |
4082afcc | 10161 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10162 | return -1; |
802188a7 | 10163 | |
28439a30 PA |
10164 | /* Make sure the remote is pointing at the right process, if |
10165 | necessary. */ | |
10166 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10167 | set_general_process (); | |
10168 | ||
96baa820 JM |
10169 | *(p++) = 'z'; |
10170 | *(p++) = '1'; | |
10171 | *(p++) = ','; | |
802188a7 | 10172 | |
8181d85f | 10173 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10174 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10175 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10176 | |
6d820c5c DJ |
10177 | putpkt (rs->buf); |
10178 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 10179 | |
6d820c5c | 10180 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10181 | { |
10182 | case PACKET_ERROR: | |
10183 | case PACKET_UNKNOWN: | |
10184 | return -1; | |
10185 | case PACKET_OK: | |
10186 | return 0; | |
10187 | } | |
8e65ff28 | 10188 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10189 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10190 | } |
96baa820 | 10191 | |
4a5e7a5b PA |
10192 | /* Verify memory using the "qCRC:" request. */ |
10193 | ||
10194 | static int | |
10195 | remote_verify_memory (struct target_ops *ops, | |
10196 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
10197 | { | |
10198 | struct remote_state *rs = get_remote_state (); | |
10199 | unsigned long host_crc, target_crc; | |
10200 | char *tmp; | |
10201 | ||
936d2992 PA |
10202 | /* It doesn't make sense to use qCRC if the remote target is |
10203 | connected but not running. */ | |
10204 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10205 | { | |
10206 | enum packet_result result; | |
28439a30 | 10207 | |
936d2992 PA |
10208 | /* Make sure the remote is pointing at the right process. */ |
10209 | set_general_process (); | |
4a5e7a5b | 10210 | |
936d2992 PA |
10211 | /* FIXME: assumes lma can fit into long. */ |
10212 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
10213 | (long) lma, (long) size); | |
10214 | putpkt (rs->buf); | |
4a5e7a5b | 10215 | |
936d2992 PA |
10216 | /* Be clever; compute the host_crc before waiting for target |
10217 | reply. */ | |
10218 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10219 | ||
10220 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 10221 | |
936d2992 PA |
10222 | result = packet_ok (rs->buf, |
10223 | &remote_protocol_packets[PACKET_qCRC]); | |
10224 | if (result == PACKET_ERROR) | |
10225 | return -1; | |
10226 | else if (result == PACKET_OK) | |
10227 | { | |
10228 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10229 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10230 | |
936d2992 PA |
10231 | return (host_crc == target_crc); |
10232 | } | |
10233 | } | |
4a5e7a5b | 10234 | |
936d2992 | 10235 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
10236 | } |
10237 | ||
c906108c SS |
10238 | /* compare-sections command |
10239 | ||
10240 | With no arguments, compares each loadable section in the exec bfd | |
10241 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10242 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10243 | |
c906108c | 10244 | static void |
fba45db2 | 10245 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
10246 | { |
10247 | asection *s; | |
c906108c | 10248 | struct cleanup *old_chain; |
948f8e3d | 10249 | gdb_byte *sectdata; |
ce359b09 | 10250 | const char *sectname; |
c906108c SS |
10251 | bfd_size_type size; |
10252 | bfd_vma lma; | |
10253 | int matched = 0; | |
10254 | int mismatched = 0; | |
4a5e7a5b | 10255 | int res; |
95cf3b38 | 10256 | int read_only = 0; |
c906108c SS |
10257 | |
10258 | if (!exec_bfd) | |
8a3fe4f8 | 10259 | error (_("command cannot be used without an exec file")); |
c906108c | 10260 | |
28439a30 PA |
10261 | /* Make sure the remote is pointing at the right process. */ |
10262 | set_general_process (); | |
10263 | ||
95cf3b38 DT |
10264 | if (args != NULL && strcmp (args, "-r") == 0) |
10265 | { | |
10266 | read_only = 1; | |
10267 | args = NULL; | |
10268 | } | |
10269 | ||
c5aa993b | 10270 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10271 | { |
10272 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10273 | continue; /* Skip non-loadable section. */ |
c906108c | 10274 | |
95cf3b38 DT |
10275 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10276 | continue; /* Skip writeable sections */ | |
10277 | ||
2c500098 | 10278 | size = bfd_get_section_size (s); |
c906108c | 10279 | if (size == 0) |
0df8b418 | 10280 | continue; /* Skip zero-length section. */ |
c906108c | 10281 | |
ce359b09 | 10282 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 10283 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10284 | continue; /* Not the section selected by user. */ |
c906108c | 10285 | |
0df8b418 | 10286 | matched = 1; /* Do this section. */ |
c906108c | 10287 | lma = s->lma; |
c906108c | 10288 | |
224c3ddb | 10289 | sectdata = (gdb_byte *) xmalloc (size); |
b8c9b27d | 10290 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 10291 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 10292 | |
4a5e7a5b PA |
10293 | res = target_verify_memory (sectdata, lma, size); |
10294 | ||
10295 | if (res == -1) | |
5af949e3 | 10296 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10297 | paddress (target_gdbarch (), lma), |
10298 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10299 | |
5af949e3 | 10300 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10301 | paddress (target_gdbarch (), lma), |
10302 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10303 | if (res) |
c906108c SS |
10304 | printf_filtered ("matched.\n"); |
10305 | else | |
c5aa993b JM |
10306 | { |
10307 | printf_filtered ("MIS-MATCHED!\n"); | |
10308 | mismatched++; | |
10309 | } | |
c906108c SS |
10310 | |
10311 | do_cleanups (old_chain); | |
10312 | } | |
10313 | if (mismatched > 0) | |
936d2992 | 10314 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10315 | the loaded file\n")); |
c906108c | 10316 | if (args && !matched) |
a3f17187 | 10317 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10318 | } |
10319 | ||
0e7f50da UW |
10320 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10321 | into remote target. The number of bytes written to the remote | |
10322 | target is returned, or -1 for error. */ | |
10323 | ||
9b409511 | 10324 | static enum target_xfer_status |
0e7f50da UW |
10325 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
10326 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 10327 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
10328 | struct packet_config *packet) |
10329 | { | |
10330 | int i, buf_len; | |
10331 | ULONGEST n; | |
0e7f50da UW |
10332 | struct remote_state *rs = get_remote_state (); |
10333 | int max_size = get_memory_write_packet_size (); | |
10334 | ||
10335 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 10336 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10337 | |
10338 | /* Insert header. */ | |
10339 | i = snprintf (rs->buf, max_size, | |
10340 | "qXfer:%s:write:%s:%s:", | |
10341 | object_name, annex ? annex : "", | |
10342 | phex_nz (offset, sizeof offset)); | |
10343 | max_size -= (i + 1); | |
10344 | ||
10345 | /* Escape as much data as fits into rs->buf. */ | |
10346 | buf_len = remote_escape_output | |
124e13d9 | 10347 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
10348 | |
10349 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
10350 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10351 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10352 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10353 | |
10354 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
10355 | |
10356 | *xfered_len = n; | |
10357 | return TARGET_XFER_OK; | |
0e7f50da UW |
10358 | } |
10359 | ||
0876f84a DJ |
10360 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10361 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10362 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10363 | The number of bytes read may be less than LEN without indicating an | |
10364 | EOF. PACKET is checked and updated to indicate whether the remote | |
10365 | target supports this object. */ | |
10366 | ||
9b409511 | 10367 | static enum target_xfer_status |
0876f84a DJ |
10368 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
10369 | const char *annex, | |
10370 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 10371 | ULONGEST *xfered_len, |
0876f84a DJ |
10372 | struct packet_config *packet) |
10373 | { | |
0876f84a | 10374 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10375 | LONGEST i, n, packet_len; |
10376 | ||
10377 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 10378 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10379 | |
10380 | /* Check whether we've cached an end-of-object packet that matches | |
10381 | this request. */ | |
8e88304f | 10382 | if (rs->finished_object) |
0876f84a | 10383 | { |
8e88304f TT |
10384 | if (strcmp (object_name, rs->finished_object) == 0 |
10385 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10386 | && offset == rs->finished_offset) | |
9b409511 YQ |
10387 | return TARGET_XFER_EOF; |
10388 | ||
0876f84a DJ |
10389 | |
10390 | /* Otherwise, we're now reading something different. Discard | |
10391 | the cache. */ | |
8e88304f TT |
10392 | xfree (rs->finished_object); |
10393 | xfree (rs->finished_annex); | |
10394 | rs->finished_object = NULL; | |
10395 | rs->finished_annex = NULL; | |
0876f84a DJ |
10396 | } |
10397 | ||
10398 | /* Request only enough to fit in a single packet. The actual data | |
10399 | may not, since we don't know how much of it will need to be escaped; | |
10400 | the target is free to respond with slightly less data. We subtract | |
10401 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10402 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
0876f84a DJ |
10403 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", |
10404 | object_name, annex ? annex : "", | |
10405 | phex_nz (offset, sizeof offset), | |
10406 | phex_nz (n, sizeof n)); | |
10407 | i = putpkt (rs->buf); | |
10408 | if (i < 0) | |
2ed4b548 | 10409 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10410 | |
10411 | rs->buf[0] = '\0'; | |
10412 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10413 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 10414 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10415 | |
10416 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
10417 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
10418 | ||
10419 | /* 'm' means there is (or at least might be) more data after this | |
10420 | batch. That does not make sense unless there's at least one byte | |
10421 | of data in this reply. */ | |
10422 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10423 | error (_("Remote qXfer reply contained no data.")); | |
10424 | ||
10425 | /* Got some data. */ | |
bc20a4af PA |
10426 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
10427 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
10428 | |
10429 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10430 | or possibly empty. If we have the final block of a non-empty |
10431 | object, record this fact to bypass a subsequent partial read. */ | |
10432 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10433 | { |
8e88304f TT |
10434 | rs->finished_object = xstrdup (object_name); |
10435 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10436 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10437 | } |
10438 | ||
9b409511 YQ |
10439 | if (i == 0) |
10440 | return TARGET_XFER_EOF; | |
10441 | else | |
10442 | { | |
10443 | *xfered_len = i; | |
10444 | return TARGET_XFER_OK; | |
10445 | } | |
0876f84a DJ |
10446 | } |
10447 | ||
9b409511 | 10448 | static enum target_xfer_status |
4b8a223f | 10449 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 10450 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
10451 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
10452 | ULONGEST *xfered_len) | |
c906108c | 10453 | { |
82f73884 | 10454 | struct remote_state *rs; |
c906108c | 10455 | int i; |
6d820c5c | 10456 | char *p2; |
1e3ff5ad | 10457 | char query_type; |
124e13d9 | 10458 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10459 | |
e6e4e701 | 10460 | set_remote_traceframe (); |
82f73884 PA |
10461 | set_general_thread (inferior_ptid); |
10462 | ||
10463 | rs = get_remote_state (); | |
10464 | ||
b2182ed2 | 10465 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10466 | if (object == TARGET_OBJECT_MEMORY) |
10467 | { | |
2d717e4f DJ |
10468 | /* If the remote target is connected but not running, we should |
10469 | pass this request down to a lower stratum (e.g. the executable | |
10470 | file). */ | |
10471 | if (!target_has_execution) | |
9b409511 | 10472 | return TARGET_XFER_EOF; |
2d717e4f | 10473 | |
21e3b9b9 | 10474 | if (writebuf != NULL) |
124e13d9 SM |
10475 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10476 | xfered_len); | |
21e3b9b9 | 10477 | else |
124e13d9 SM |
10478 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
10479 | xfered_len); | |
21e3b9b9 DJ |
10480 | } |
10481 | ||
0df8b418 | 10482 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10483 | if (object == TARGET_OBJECT_SPU) |
10484 | { | |
10485 | if (readbuf) | |
10486 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
10487 | xfered_len, &remote_protocol_packets |
10488 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
10489 | else |
10490 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
10491 | xfered_len, &remote_protocol_packets |
10492 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10493 | } |
10494 | ||
4aa995e1 PA |
10495 | /* Handle extra signal info using qxfer packets. */ |
10496 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10497 | { | |
10498 | if (readbuf) | |
10499 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10500 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10501 | [PACKET_qXfer_siginfo_read]); |
10502 | else | |
3e43a32a | 10503 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10504 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10505 | &remote_protocol_packets |
10506 | [PACKET_qXfer_siginfo_write]); | |
10507 | } | |
10508 | ||
0fb4aa4b PA |
10509 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10510 | { | |
10511 | if (readbuf) | |
3e43a32a | 10512 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10513 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10514 | &remote_protocol_packets |
10515 | [PACKET_qXfer_statictrace_read]); | |
10516 | else | |
2ed4b548 | 10517 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10518 | } |
10519 | ||
a76d924d DJ |
10520 | /* Only handle flash writes. */ |
10521 | if (writebuf != NULL) | |
10522 | { | |
a76d924d DJ |
10523 | switch (object) |
10524 | { | |
10525 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10526 | return remote_flash_write (ops, offset, len, xfered_len, |
10527 | writebuf); | |
a76d924d DJ |
10528 | |
10529 | default: | |
2ed4b548 | 10530 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10531 | } |
10532 | } | |
4b8a223f | 10533 | |
1e3ff5ad AC |
10534 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10535 | objects!!! Instead specify new query packets. */ | |
10536 | switch (object) | |
c906108c | 10537 | { |
1e3ff5ad AC |
10538 | case TARGET_OBJECT_AVR: |
10539 | query_type = 'R'; | |
10540 | break; | |
802188a7 RM |
10541 | |
10542 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10543 | gdb_assert (annex == NULL); |
10544 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10545 | xfered_len, |
0876f84a | 10546 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10547 | |
23181151 DJ |
10548 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10549 | return remote_read_qxfer | |
9b409511 | 10550 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10551 | &remote_protocol_packets[PACKET_qXfer_features]); |
10552 | ||
cfa9d6d9 DJ |
10553 | case TARGET_OBJECT_LIBRARIES: |
10554 | return remote_read_qxfer | |
9b409511 | 10555 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10556 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10557 | ||
2268b414 JK |
10558 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10559 | return remote_read_qxfer | |
9b409511 | 10560 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10561 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10562 | ||
fd79ecee DJ |
10563 | case TARGET_OBJECT_MEMORY_MAP: |
10564 | gdb_assert (annex == NULL); | |
10565 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10566 | xfered_len, |
fd79ecee DJ |
10567 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10568 | ||
07e059b5 VP |
10569 | case TARGET_OBJECT_OSDATA: |
10570 | /* Should only get here if we're connected. */ | |
5d93a237 | 10571 | gdb_assert (rs->remote_desc); |
07e059b5 | 10572 | return remote_read_qxfer |
9b409511 | 10573 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10574 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10575 | ||
dc146f7c VP |
10576 | case TARGET_OBJECT_THREADS: |
10577 | gdb_assert (annex == NULL); | |
10578 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10579 | xfered_len, |
dc146f7c VP |
10580 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10581 | ||
b3b9301e PA |
10582 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10583 | gdb_assert (annex == NULL); | |
10584 | return remote_read_qxfer | |
9b409511 | 10585 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10586 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10587 | |
10588 | case TARGET_OBJECT_FDPIC: | |
10589 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10590 | xfered_len, |
78d85199 | 10591 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10592 | |
10593 | case TARGET_OBJECT_OPENVMS_UIB: | |
10594 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10595 | xfered_len, |
169081d0 TG |
10596 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10597 | ||
9accd112 MM |
10598 | case TARGET_OBJECT_BTRACE: |
10599 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10600 | xfered_len, |
9accd112 MM |
10601 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10602 | ||
f4abbc16 MM |
10603 | case TARGET_OBJECT_BTRACE_CONF: |
10604 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10605 | len, xfered_len, | |
10606 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10607 | ||
c78fa86a GB |
10608 | case TARGET_OBJECT_EXEC_FILE: |
10609 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10610 | len, xfered_len, | |
10611 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10612 | ||
1e3ff5ad | 10613 | default: |
2ed4b548 | 10614 | return TARGET_XFER_E_IO; |
c906108c SS |
10615 | } |
10616 | ||
0df8b418 | 10617 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10618 | large enough let the caller deal with it. */ |
ea9c271d | 10619 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10620 | return TARGET_XFER_E_IO; |
ea9c271d | 10621 | len = get_remote_packet_size (); |
1e3ff5ad | 10622 | |
23860348 | 10623 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10624 | if (!rs->remote_desc) |
8a3fe4f8 | 10625 | error (_("remote query is only available after target open")); |
c906108c | 10626 | |
1e3ff5ad | 10627 | gdb_assert (annex != NULL); |
4b8a223f | 10628 | gdb_assert (readbuf != NULL); |
c906108c | 10629 | |
6d820c5c | 10630 | p2 = rs->buf; |
c906108c SS |
10631 | *p2++ = 'q'; |
10632 | *p2++ = query_type; | |
10633 | ||
23860348 MS |
10634 | /* We used one buffer char for the remote protocol q command and |
10635 | another for the query type. As the remote protocol encapsulation | |
10636 | uses 4 chars plus one extra in case we are debugging | |
10637 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10638 | string. */ | |
c906108c | 10639 | i = 0; |
ea9c271d | 10640 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10641 | { |
1e3ff5ad AC |
10642 | /* Bad caller may have sent forbidden characters. */ |
10643 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10644 | *p2++ = annex[i]; | |
c906108c SS |
10645 | i++; |
10646 | } | |
1e3ff5ad AC |
10647 | *p2 = '\0'; |
10648 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10649 | |
6d820c5c | 10650 | i = putpkt (rs->buf); |
c5aa993b | 10651 | if (i < 0) |
2ed4b548 | 10652 | return TARGET_XFER_E_IO; |
c906108c | 10653 | |
6d820c5c DJ |
10654 | getpkt (&rs->buf, &rs->buf_size, 0); |
10655 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10656 | |
9b409511 YQ |
10657 | *xfered_len = strlen ((char *) readbuf); |
10658 | return TARGET_XFER_OK; | |
c906108c SS |
10659 | } |
10660 | ||
09c98b44 DB |
10661 | /* Implementation of to_get_memory_xfer_limit. */ |
10662 | ||
10663 | static ULONGEST | |
10664 | remote_get_memory_xfer_limit (struct target_ops *ops) | |
10665 | { | |
10666 | return get_memory_write_packet_size (); | |
10667 | } | |
10668 | ||
08388c79 DE |
10669 | static int |
10670 | remote_search_memory (struct target_ops* ops, | |
10671 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10672 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10673 | CORE_ADDR *found_addrp) | |
10674 | { | |
f5656ead | 10675 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10676 | struct remote_state *rs = get_remote_state (); |
10677 | int max_size = get_memory_write_packet_size (); | |
10678 | struct packet_config *packet = | |
10679 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10680 | /* Number of packet bytes used to encode the pattern; |
10681 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10682 | int escaped_pattern_len; |
0df8b418 | 10683 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10684 | int used_pattern_len; |
10685 | int i; | |
10686 | int found; | |
10687 | ULONGEST found_addr; | |
10688 | ||
10689 | /* Don't go to the target if we don't have to. | |
10690 | This is done before checking packet->support to avoid the possibility that | |
10691 | a success for this edge case means the facility works in general. */ | |
10692 | if (pattern_len > search_space_len) | |
10693 | return 0; | |
10694 | if (pattern_len == 0) | |
10695 | { | |
10696 | *found_addrp = start_addr; | |
10697 | return 1; | |
10698 | } | |
10699 | ||
10700 | /* If we already know the packet isn't supported, fall back to the simple | |
10701 | way of searching memory. */ | |
10702 | ||
4082afcc | 10703 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10704 | { |
10705 | /* Target doesn't provided special support, fall back and use the | |
10706 | standard support (copy memory and do the search here). */ | |
10707 | return simple_search_memory (ops, start_addr, search_space_len, | |
10708 | pattern, pattern_len, found_addrp); | |
10709 | } | |
10710 | ||
28439a30 PA |
10711 | /* Make sure the remote is pointing at the right process. */ |
10712 | set_general_process (); | |
10713 | ||
08388c79 DE |
10714 | /* Insert header. */ |
10715 | i = snprintf (rs->buf, max_size, | |
10716 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10717 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10718 | phex_nz (search_space_len, sizeof (search_space_len))); |
10719 | max_size -= (i + 1); | |
10720 | ||
10721 | /* Escape as much data as fits into rs->buf. */ | |
10722 | escaped_pattern_len = | |
124e13d9 | 10723 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10724 | &used_pattern_len, max_size); |
10725 | ||
10726 | /* Bail if the pattern is too large. */ | |
10727 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10728 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10729 | |
10730 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10731 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10732 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10733 | { | |
10734 | /* The request may not have worked because the command is not | |
10735 | supported. If so, fall back to the simple way. */ | |
10736 | if (packet->support == PACKET_DISABLE) | |
10737 | { | |
10738 | return simple_search_memory (ops, start_addr, search_space_len, | |
10739 | pattern, pattern_len, found_addrp); | |
10740 | } | |
10741 | return -1; | |
10742 | } | |
10743 | ||
10744 | if (rs->buf[0] == '0') | |
10745 | found = 0; | |
10746 | else if (rs->buf[0] == '1') | |
10747 | { | |
10748 | found = 1; | |
10749 | if (rs->buf[1] != ',') | |
10e0fa18 | 10750 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10751 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10752 | *found_addrp = found_addr; | |
10753 | } | |
10754 | else | |
10e0fa18 | 10755 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10756 | |
10757 | return found; | |
10758 | } | |
10759 | ||
96baa820 | 10760 | static void |
a30bf1f1 | 10761 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10762 | struct ui_file *outbuf) |
96baa820 | 10763 | { |
d01949b6 | 10764 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10765 | char *p = rs->buf; |
96baa820 | 10766 | |
5d93a237 | 10767 | if (!rs->remote_desc) |
8a3fe4f8 | 10768 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10769 | |
23860348 | 10770 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10771 | if (command == NULL) |
10772 | command = ""; | |
10773 | ||
23860348 | 10774 | /* The query prefix. */ |
2e9f7625 DJ |
10775 | strcpy (rs->buf, "qRcmd,"); |
10776 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10777 | |
3e43a32a MS |
10778 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10779 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10780 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10781 | |
23860348 | 10782 | /* Encode the actual command. */ |
a30bf1f1 | 10783 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10784 | |
6d820c5c | 10785 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10786 | error (_("Communication problem with target.")); |
96baa820 JM |
10787 | |
10788 | /* get/display the response */ | |
10789 | while (1) | |
10790 | { | |
2e9f7625 DJ |
10791 | char *buf; |
10792 | ||
00bf0b85 | 10793 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10794 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10795 | rs->buf[0] = '\0'; |
5b37825d PW |
10796 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10797 | { | |
10798 | /* Timeout. Continue to (try to) read responses. | |
10799 | This is better than stopping with an error, assuming the stub | |
10800 | is still executing the (long) monitor command. | |
10801 | If needed, the user can interrupt gdb using C-c, obtaining | |
10802 | an effect similar to stop on timeout. */ | |
10803 | continue; | |
10804 | } | |
2e9f7625 | 10805 | buf = rs->buf; |
96baa820 | 10806 | if (buf[0] == '\0') |
8a3fe4f8 | 10807 | error (_("Target does not support this command.")); |
96baa820 JM |
10808 | if (buf[0] == 'O' && buf[1] != 'K') |
10809 | { | |
23860348 | 10810 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10811 | continue; |
10812 | } | |
10813 | if (strcmp (buf, "OK") == 0) | |
10814 | break; | |
7be570e7 JM |
10815 | if (strlen (buf) == 3 && buf[0] == 'E' |
10816 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10817 | { | |
8a3fe4f8 | 10818 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10819 | } |
96baa820 JM |
10820 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10821 | { | |
10822 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10823 | |
96baa820 JM |
10824 | fputc_unfiltered (c, outbuf); |
10825 | } | |
10826 | break; | |
10827 | } | |
10828 | } | |
10829 | ||
fd79ecee DJ |
10830 | static VEC(mem_region_s) * |
10831 | remote_memory_map (struct target_ops *ops) | |
10832 | { | |
10833 | VEC(mem_region_s) *result = NULL; | |
10834 | char *text = target_read_stralloc (¤t_target, | |
10835 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
10836 | ||
10837 | if (text) | |
10838 | { | |
10839 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 10840 | |
fd79ecee DJ |
10841 | result = parse_memory_map (text); |
10842 | do_cleanups (back_to); | |
10843 | } | |
10844 | ||
10845 | return result; | |
10846 | } | |
10847 | ||
c906108c | 10848 | static void |
fba45db2 | 10849 | packet_command (char *args, int from_tty) |
c906108c | 10850 | { |
d01949b6 | 10851 | struct remote_state *rs = get_remote_state (); |
c906108c | 10852 | |
5d93a237 | 10853 | if (!rs->remote_desc) |
8a3fe4f8 | 10854 | error (_("command can only be used with remote target")); |
c906108c | 10855 | |
c5aa993b | 10856 | if (!args) |
8a3fe4f8 | 10857 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10858 | |
10859 | puts_filtered ("sending: "); | |
10860 | print_packet (args); | |
10861 | puts_filtered ("\n"); | |
10862 | putpkt (args); | |
10863 | ||
6d820c5c | 10864 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10865 | puts_filtered ("received: "); |
6d820c5c | 10866 | print_packet (rs->buf); |
c906108c SS |
10867 | puts_filtered ("\n"); |
10868 | } | |
10869 | ||
10870 | #if 0 | |
23860348 | 10871 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10872 | |
a14ed312 | 10873 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10874 | |
a14ed312 | 10875 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10876 | |
a14ed312 | 10877 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10878 | |
a14ed312 | 10879 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10880 | |
23860348 | 10881 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10882 | |
a14ed312 | 10883 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10884 | |
23860348 | 10885 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10886 | |
a14ed312 | 10887 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10888 | |
a14ed312 | 10889 | static void init_remote_threadtests (void); |
c906108c | 10890 | |
23860348 | 10891 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10892 | |
10893 | static void | |
fba45db2 | 10894 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10895 | { |
10896 | int sample_thread = SAMPLE_THREAD; | |
10897 | ||
a3f17187 | 10898 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10899 | set_general_thread (sample_thread); |
c906108c SS |
10900 | } |
10901 | ||
10902 | ||
10903 | static void | |
fba45db2 | 10904 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10905 | { |
10906 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10907 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10908 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10909 | |
79d7f229 | 10910 | if (remote_thread_alive (ptid)) |
c906108c SS |
10911 | printf_filtered ("PASS: Thread alive test\n"); |
10912 | else | |
10913 | printf_filtered ("FAIL: Thread alive test\n"); | |
10914 | } | |
10915 | ||
23860348 | 10916 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10917 | |
10918 | void | |
fba45db2 | 10919 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10920 | { |
10921 | char hexid[20]; | |
10922 | ||
23860348 | 10923 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10924 | hexid[16] = 0; |
10925 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10926 | } | |
10927 | ||
10928 | static void | |
fba45db2 | 10929 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10930 | { |
10931 | int startflag = 1; | |
10932 | threadref nextthread; | |
10933 | int done, result_count; | |
10934 | threadref threadlist[3]; | |
10935 | ||
10936 | printf_filtered ("Remote Threadlist test\n"); | |
10937 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10938 | &result_count, &threadlist[0])) | |
10939 | printf_filtered ("FAIL: threadlist test\n"); | |
10940 | else | |
10941 | { | |
10942 | threadref *scan = threadlist; | |
10943 | threadref *limit = scan + result_count; | |
10944 | ||
10945 | while (scan < limit) | |
10946 | output_threadid (" thread ", scan++); | |
10947 | } | |
10948 | } | |
10949 | ||
10950 | void | |
fba45db2 | 10951 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10952 | { |
10953 | output_threadid ("Threadid: ", &info->threadid); | |
10954 | printf_filtered ("Name: %s\n ", info->shortname); | |
10955 | printf_filtered ("State: %s\n", info->display); | |
10956 | printf_filtered ("other: %s\n\n", info->more_display); | |
10957 | } | |
10958 | ||
10959 | int | |
fba45db2 | 10960 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10961 | { |
10962 | int result; | |
10963 | int set; | |
10964 | struct gdb_ext_thread_info threadinfo; | |
10965 | ||
10966 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10967 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10968 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10969 | display_thread_info (&threadinfo); | |
10970 | return result; | |
10971 | } | |
10972 | ||
10973 | static void | |
fba45db2 | 10974 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10975 | { |
10976 | int athread = SAMPLE_THREAD; | |
10977 | threadref thread; | |
10978 | int set; | |
10979 | ||
10980 | int_to_threadref (&thread, athread); | |
10981 | printf_filtered ("Remote Threadinfo test\n"); | |
10982 | if (!get_and_display_threadinfo (&thread)) | |
10983 | printf_filtered ("FAIL cannot get thread info\n"); | |
10984 | } | |
10985 | ||
10986 | static int | |
fba45db2 | 10987 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10988 | { |
10989 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10990 | return get_and_display_threadinfo (ref); | |
10991 | } | |
10992 | ||
10993 | static void | |
fba45db2 | 10994 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10995 | { |
10996 | printf_filtered ("Remote Threadlist update test\n"); | |
10997 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10998 | } | |
10999 | ||
11000 | static void | |
11001 | init_remote_threadtests (void) | |
11002 | { | |
3e43a32a MS |
11003 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11004 | _("Fetch and print the remote list of " | |
11005 | "thread identifiers, one pkt only")); | |
c906108c | 11006 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 11007 | _("Fetch and display info about one thread")); |
c906108c | 11008 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 11009 | _("Test setting to a different thread")); |
c906108c | 11010 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 11011 | _("Iterate through updating all remote thread info")); |
c906108c | 11012 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 11013 | _(" Remote thread alive test ")); |
c906108c SS |
11014 | } |
11015 | ||
11016 | #endif /* 0 */ | |
11017 | ||
f3fb8c85 MS |
11018 | /* Convert a thread ID to a string. Returns the string in a static |
11019 | buffer. */ | |
11020 | ||
7a114964 | 11021 | static const char * |
117de6a9 | 11022 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 11023 | { |
79d7f229 | 11024 | static char buf[64]; |
82f73884 | 11025 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11026 | |
7cee1e54 PA |
11027 | if (ptid_equal (ptid, null_ptid)) |
11028 | return normal_pid_to_str (ptid); | |
11029 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
11030 | { |
11031 | /* Printing an inferior target id. */ | |
11032 | ||
11033 | /* When multi-process extensions are off, there's no way in the | |
11034 | remote protocol to know the remote process id, if there's any | |
11035 | at all. There's one exception --- when we're connected with | |
11036 | target extended-remote, and we manually attached to a process | |
11037 | with "attach PID". We don't record anywhere a flag that | |
11038 | allows us to distinguish that case from the case of | |
11039 | connecting with extended-remote and the stub already being | |
11040 | attached to a process, and reporting yes to qAttached, hence | |
11041 | no smart special casing here. */ | |
11042 | if (!remote_multi_process_p (rs)) | |
11043 | { | |
11044 | xsnprintf (buf, sizeof buf, "Remote target"); | |
11045 | return buf; | |
11046 | } | |
11047 | ||
11048 | return normal_pid_to_str (ptid); | |
82f73884 | 11049 | } |
ecd0ada5 | 11050 | else |
79d7f229 | 11051 | { |
ecd0ada5 PA |
11052 | if (ptid_equal (magic_null_ptid, ptid)) |
11053 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 11054 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
11055 | if (ptid_get_lwp (ptid) == 0) |
11056 | return normal_pid_to_str (ptid); | |
11057 | else | |
11058 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
11059 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
11060 | else |
11061 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 11062 | ptid_get_lwp (ptid)); |
79d7f229 PA |
11063 | return buf; |
11064 | } | |
f3fb8c85 MS |
11065 | } |
11066 | ||
38691318 KB |
11067 | /* Get the address of the thread local variable in OBJFILE which is |
11068 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11069 | ||
11070 | static CORE_ADDR | |
117de6a9 PA |
11071 | remote_get_thread_local_address (struct target_ops *ops, |
11072 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 11073 | { |
4082afcc | 11074 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11075 | { |
11076 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 11077 | char *p = rs->buf; |
82f73884 | 11078 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 11079 | enum packet_result result; |
38691318 KB |
11080 | |
11081 | strcpy (p, "qGetTLSAddr:"); | |
11082 | p += strlen (p); | |
82f73884 | 11083 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11084 | *p++ = ','; |
11085 | p += hexnumstr (p, offset); | |
11086 | *p++ = ','; | |
11087 | p += hexnumstr (p, lm); | |
11088 | *p++ = '\0'; | |
11089 | ||
6d820c5c DJ |
11090 | putpkt (rs->buf); |
11091 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
11092 | result = packet_ok (rs->buf, |
11093 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11094 | if (result == PACKET_OK) |
38691318 KB |
11095 | { |
11096 | ULONGEST result; | |
11097 | ||
6d820c5c | 11098 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
11099 | return result; |
11100 | } | |
571dd617 | 11101 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11102 | throw_error (TLS_GENERIC_ERROR, |
11103 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11104 | else |
109c3e39 AC |
11105 | throw_error (TLS_GENERIC_ERROR, |
11106 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11107 | } |
11108 | else | |
109c3e39 AC |
11109 | throw_error (TLS_GENERIC_ERROR, |
11110 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11111 | /* Not reached. */ |
11112 | return 0; | |
11113 | } | |
11114 | ||
711e434b PM |
11115 | /* Provide thread local base, i.e. Thread Information Block address. |
11116 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11117 | ||
70221824 | 11118 | static int |
bd7ae0f5 | 11119 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11120 | { |
4082afcc | 11121 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11122 | { |
11123 | struct remote_state *rs = get_remote_state (); | |
11124 | char *p = rs->buf; | |
11125 | char *endp = rs->buf + get_remote_packet_size (); | |
11126 | enum packet_result result; | |
11127 | ||
11128 | strcpy (p, "qGetTIBAddr:"); | |
11129 | p += strlen (p); | |
11130 | p = write_ptid (p, endp, ptid); | |
11131 | *p++ = '\0'; | |
11132 | ||
11133 | putpkt (rs->buf); | |
11134 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11135 | result = packet_ok (rs->buf, | |
11136 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11137 | if (result == PACKET_OK) | |
11138 | { | |
11139 | ULONGEST result; | |
11140 | ||
11141 | unpack_varlen_hex (rs->buf, &result); | |
11142 | if (addr) | |
11143 | *addr = (CORE_ADDR) result; | |
11144 | return 1; | |
11145 | } | |
11146 | else if (result == PACKET_UNKNOWN) | |
11147 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11148 | else | |
11149 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11150 | } | |
11151 | else | |
11152 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11153 | /* Not reached. */ | |
11154 | return 0; | |
11155 | } | |
11156 | ||
29709017 DJ |
11157 | /* Support for inferring a target description based on the current |
11158 | architecture and the size of a 'g' packet. While the 'g' packet | |
11159 | can have any size (since optional registers can be left off the | |
11160 | end), some sizes are easily recognizable given knowledge of the | |
11161 | approximate architecture. */ | |
11162 | ||
11163 | struct remote_g_packet_guess | |
11164 | { | |
11165 | int bytes; | |
11166 | const struct target_desc *tdesc; | |
11167 | }; | |
11168 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
11169 | DEF_VEC_O(remote_g_packet_guess_s); | |
11170 | ||
11171 | struct remote_g_packet_data | |
11172 | { | |
11173 | VEC(remote_g_packet_guess_s) *guesses; | |
11174 | }; | |
11175 | ||
11176 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11177 | ||
11178 | static void * | |
11179 | remote_g_packet_data_init (struct obstack *obstack) | |
11180 | { | |
11181 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
11182 | } | |
11183 | ||
11184 | void | |
11185 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11186 | const struct target_desc *tdesc) | |
11187 | { | |
11188 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11189 | = ((struct remote_g_packet_data *) |
11190 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11191 | struct remote_g_packet_guess new_guess, *guess; |
11192 | int ix; | |
11193 | ||
11194 | gdb_assert (tdesc != NULL); | |
11195 | ||
11196 | for (ix = 0; | |
11197 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11198 | ix++) | |
11199 | if (guess->bytes == bytes) | |
11200 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 11201 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11202 | bytes); |
11203 | ||
11204 | new_guess.bytes = bytes; | |
11205 | new_guess.tdesc = tdesc; | |
11206 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
11207 | } | |
11208 | ||
d962ef82 DJ |
11209 | /* Return 1 if remote_read_description would do anything on this target |
11210 | and architecture, 0 otherwise. */ | |
11211 | ||
11212 | static int | |
11213 | remote_read_description_p (struct target_ops *target) | |
11214 | { | |
11215 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11216 | = ((struct remote_g_packet_data *) |
11217 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
11218 | |
11219 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
11220 | return 1; | |
11221 | ||
11222 | return 0; | |
11223 | } | |
11224 | ||
29709017 DJ |
11225 | static const struct target_desc * |
11226 | remote_read_description (struct target_ops *target) | |
11227 | { | |
11228 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11229 | = ((struct remote_g_packet_data *) |
11230 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11231 | |
d962ef82 DJ |
11232 | /* Do not try this during initial connection, when we do not know |
11233 | whether there is a running but stopped thread. */ | |
11234 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 11235 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 11236 | |
29709017 DJ |
11237 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
11238 | { | |
11239 | struct remote_g_packet_guess *guess; | |
11240 | int ix; | |
11241 | int bytes = send_g_packet (); | |
11242 | ||
11243 | for (ix = 0; | |
11244 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
11245 | ix++) | |
11246 | if (guess->bytes == bytes) | |
11247 | return guess->tdesc; | |
11248 | ||
11249 | /* We discard the g packet. A minor optimization would be to | |
11250 | hold on to it, and fill the register cache once we have selected | |
11251 | an architecture, but it's too tricky to do safely. */ | |
11252 | } | |
11253 | ||
2117c711 | 11254 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
11255 | } |
11256 | ||
a6b151f1 DJ |
11257 | /* Remote file transfer support. This is host-initiated I/O, not |
11258 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11259 | ||
11260 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11261 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11262 | decrease *LEFT. Otherwise raise an error. */ | |
11263 | ||
11264 | static void | |
a121b7c1 | 11265 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11266 | { |
11267 | int len = strlen (string); | |
11268 | ||
11269 | if (len > *left) | |
11270 | error (_("Packet too long for target.")); | |
11271 | ||
11272 | memcpy (*buffer, string, len); | |
11273 | *buffer += len; | |
11274 | *left -= len; | |
11275 | ||
11276 | /* NUL-terminate the buffer as a convenience, if there is | |
11277 | room. */ | |
11278 | if (*left) | |
11279 | **buffer = '\0'; | |
11280 | } | |
11281 | ||
11282 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11283 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11284 | decrease *LEFT. Otherwise raise an error. */ | |
11285 | ||
11286 | static void | |
11287 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11288 | int len) | |
11289 | { | |
11290 | if (2 * len > *left) | |
11291 | error (_("Packet too long for target.")); | |
11292 | ||
11293 | bin2hex (bytes, *buffer, len); | |
11294 | *buffer += 2 * len; | |
11295 | *left -= 2 * len; | |
11296 | ||
11297 | /* NUL-terminate the buffer as a convenience, if there is | |
11298 | room. */ | |
11299 | if (*left) | |
11300 | **buffer = '\0'; | |
11301 | } | |
11302 | ||
11303 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11304 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11305 | decrease *LEFT. Otherwise raise an error. */ | |
11306 | ||
11307 | static void | |
11308 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11309 | { | |
11310 | int len = hexnumlen (value); | |
11311 | ||
11312 | if (len > *left) | |
11313 | error (_("Packet too long for target.")); | |
11314 | ||
11315 | hexnumstr (*buffer, value); | |
11316 | *buffer += len; | |
11317 | *left -= len; | |
11318 | ||
11319 | /* NUL-terminate the buffer as a convenience, if there is | |
11320 | room. */ | |
11321 | if (*left) | |
11322 | **buffer = '\0'; | |
11323 | } | |
11324 | ||
11325 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11326 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11327 | was included, and *ATTACHMENT to point to the start of the annex | |
11328 | if any. The length of the packet isn't needed here; there may | |
11329 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11330 | ||
11331 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11332 | -1 is returned, the other variables may not be initialized. */ | |
11333 | ||
11334 | static int | |
11335 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11336 | int *remote_errno, char **attachment) | |
11337 | { | |
11338 | char *p, *p2; | |
11339 | ||
11340 | *remote_errno = 0; | |
11341 | *attachment = NULL; | |
11342 | ||
11343 | if (buffer[0] != 'F') | |
11344 | return -1; | |
11345 | ||
11346 | errno = 0; | |
11347 | *retcode = strtol (&buffer[1], &p, 16); | |
11348 | if (errno != 0 || p == &buffer[1]) | |
11349 | return -1; | |
11350 | ||
11351 | /* Check for ",errno". */ | |
11352 | if (*p == ',') | |
11353 | { | |
11354 | errno = 0; | |
11355 | *remote_errno = strtol (p + 1, &p2, 16); | |
11356 | if (errno != 0 || p + 1 == p2) | |
11357 | return -1; | |
11358 | p = p2; | |
11359 | } | |
11360 | ||
11361 | /* Check for ";attachment". If there is no attachment, the | |
11362 | packet should end here. */ | |
11363 | if (*p == ';') | |
11364 | { | |
11365 | *attachment = p + 1; | |
11366 | return 0; | |
11367 | } | |
11368 | else if (*p == '\0') | |
11369 | return 0; | |
11370 | else | |
11371 | return -1; | |
11372 | } | |
11373 | ||
11374 | /* Send a prepared I/O packet to the target and read its response. | |
11375 | The prepared packet is in the global RS->BUF before this function | |
11376 | is called, and the answer is there when we return. | |
11377 | ||
11378 | COMMAND_BYTES is the length of the request to send, which may include | |
11379 | binary data. WHICH_PACKET is the packet configuration to check | |
11380 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11381 | is set to the error number and -1 is returned. Otherwise the value | |
11382 | returned by the function is returned. | |
11383 | ||
11384 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11385 | attachment is expected; an error will be reported if there's a | |
11386 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11387 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11388 | attachment's length. */ | |
11389 | ||
11390 | static int | |
11391 | remote_hostio_send_command (int command_bytes, int which_packet, | |
11392 | int *remote_errno, char **attachment, | |
11393 | int *attachment_len) | |
11394 | { | |
11395 | struct remote_state *rs = get_remote_state (); | |
11396 | int ret, bytes_read; | |
11397 | char *attachment_tmp; | |
11398 | ||
5d93a237 | 11399 | if (!rs->remote_desc |
4082afcc | 11400 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11401 | { |
11402 | *remote_errno = FILEIO_ENOSYS; | |
11403 | return -1; | |
11404 | } | |
11405 | ||
11406 | putpkt_binary (rs->buf, command_bytes); | |
11407 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
11408 | ||
11409 | /* If it timed out, something is wrong. Don't try to parse the | |
11410 | buffer. */ | |
11411 | if (bytes_read < 0) | |
11412 | { | |
11413 | *remote_errno = FILEIO_EINVAL; | |
11414 | return -1; | |
11415 | } | |
11416 | ||
11417 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11418 | { | |
11419 | case PACKET_ERROR: | |
11420 | *remote_errno = FILEIO_EINVAL; | |
11421 | return -1; | |
11422 | case PACKET_UNKNOWN: | |
11423 | *remote_errno = FILEIO_ENOSYS; | |
11424 | return -1; | |
11425 | case PACKET_OK: | |
11426 | break; | |
11427 | } | |
11428 | ||
11429 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
11430 | &attachment_tmp)) | |
11431 | { | |
11432 | *remote_errno = FILEIO_EINVAL; | |
11433 | return -1; | |
11434 | } | |
11435 | ||
11436 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11437 | if ((attachment_tmp == NULL && attachment != NULL) | |
11438 | || (attachment_tmp != NULL && attachment == NULL)) | |
11439 | { | |
11440 | *remote_errno = FILEIO_EINVAL; | |
11441 | return -1; | |
11442 | } | |
11443 | ||
11444 | /* If an attachment was found, it must point into the packet buffer; | |
11445 | work out how many bytes there were. */ | |
11446 | if (attachment_tmp != NULL) | |
11447 | { | |
11448 | *attachment = attachment_tmp; | |
11449 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
11450 | } | |
11451 | ||
11452 | return ret; | |
11453 | } | |
11454 | ||
80152258 PA |
11455 | /* Invalidate the readahead cache. */ |
11456 | ||
11457 | static void | |
11458 | readahead_cache_invalidate (void) | |
11459 | { | |
11460 | struct remote_state *rs = get_remote_state (); | |
11461 | ||
11462 | rs->readahead_cache.fd = -1; | |
11463 | } | |
11464 | ||
11465 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
11466 | ||
11467 | static void | |
11468 | readahead_cache_invalidate_fd (int fd) | |
11469 | { | |
11470 | struct remote_state *rs = get_remote_state (); | |
11471 | ||
11472 | if (rs->readahead_cache.fd == fd) | |
11473 | rs->readahead_cache.fd = -1; | |
11474 | } | |
11475 | ||
15a201c8 GB |
11476 | /* Set the filesystem remote_hostio functions that take FILENAME |
11477 | arguments will use. Return 0 on success, or -1 if an error | |
11478 | occurs (and set *REMOTE_ERRNO). */ | |
11479 | ||
11480 | static int | |
11481 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11482 | { | |
11483 | struct remote_state *rs = get_remote_state (); | |
11484 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11485 | char *p = rs->buf; | |
11486 | int left = get_remote_packet_size () - 1; | |
11487 | char arg[9]; | |
11488 | int ret; | |
11489 | ||
11490 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11491 | return 0; | |
11492 | ||
11493 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11494 | return 0; | |
11495 | ||
11496 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11497 | ||
11498 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11499 | remote_buffer_add_string (&p, &left, arg); | |
11500 | ||
11501 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11502 | remote_errno, NULL, NULL); | |
11503 | ||
11504 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11505 | return 0; | |
11506 | ||
11507 | if (ret == 0) | |
11508 | rs->fs_pid = required_pid; | |
11509 | ||
11510 | return ret; | |
11511 | } | |
11512 | ||
12e2a5fd | 11513 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11514 | |
11515 | static int | |
cd897586 | 11516 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11517 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11518 | int flags, int mode, int warn_if_slow, |
11519 | int *remote_errno) | |
a6b151f1 DJ |
11520 | { |
11521 | struct remote_state *rs = get_remote_state (); | |
11522 | char *p = rs->buf; | |
11523 | int left = get_remote_packet_size () - 1; | |
11524 | ||
4313b8c0 GB |
11525 | if (warn_if_slow) |
11526 | { | |
11527 | static int warning_issued = 0; | |
11528 | ||
11529 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11530 | filename); | |
11531 | ||
11532 | if (!warning_issued) | |
11533 | { | |
11534 | warning (_("File transfers from remote targets can be slow." | |
11535 | " Use \"set sysroot\" to access files locally" | |
11536 | " instead.")); | |
11537 | warning_issued = 1; | |
11538 | } | |
11539 | } | |
11540 | ||
15a201c8 GB |
11541 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11542 | return -1; | |
11543 | ||
a6b151f1 DJ |
11544 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11545 | ||
11546 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11547 | strlen (filename)); | |
11548 | remote_buffer_add_string (&p, &left, ","); | |
11549 | ||
11550 | remote_buffer_add_int (&p, &left, flags); | |
11551 | remote_buffer_add_string (&p, &left, ","); | |
11552 | ||
11553 | remote_buffer_add_int (&p, &left, mode); | |
11554 | ||
11555 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11556 | remote_errno, NULL, NULL); | |
11557 | } | |
11558 | ||
12e2a5fd | 11559 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11560 | |
11561 | static int | |
0d866f62 TT |
11562 | remote_hostio_pwrite (struct target_ops *self, |
11563 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11564 | ULONGEST offset, int *remote_errno) |
11565 | { | |
11566 | struct remote_state *rs = get_remote_state (); | |
11567 | char *p = rs->buf; | |
11568 | int left = get_remote_packet_size (); | |
11569 | int out_len; | |
11570 | ||
80152258 PA |
11571 | readahead_cache_invalidate_fd (fd); |
11572 | ||
a6b151f1 DJ |
11573 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11574 | ||
11575 | remote_buffer_add_int (&p, &left, fd); | |
11576 | remote_buffer_add_string (&p, &left, ","); | |
11577 | ||
11578 | remote_buffer_add_int (&p, &left, offset); | |
11579 | remote_buffer_add_string (&p, &left, ","); | |
11580 | ||
124e13d9 | 11581 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11582 | get_remote_packet_size () - (p - rs->buf)); |
11583 | ||
11584 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11585 | remote_errno, NULL, NULL); | |
11586 | } | |
11587 | ||
80152258 PA |
11588 | /* Helper for the implementation of to_fileio_pread. Read the file |
11589 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11590 | |
11591 | static int | |
80152258 PA |
11592 | remote_hostio_pread_vFile (struct target_ops *self, |
11593 | int fd, gdb_byte *read_buf, int len, | |
11594 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11595 | { |
11596 | struct remote_state *rs = get_remote_state (); | |
11597 | char *p = rs->buf; | |
11598 | char *attachment; | |
11599 | int left = get_remote_packet_size (); | |
11600 | int ret, attachment_len; | |
11601 | int read_len; | |
11602 | ||
11603 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11604 | ||
11605 | remote_buffer_add_int (&p, &left, fd); | |
11606 | remote_buffer_add_string (&p, &left, ","); | |
11607 | ||
11608 | remote_buffer_add_int (&p, &left, len); | |
11609 | remote_buffer_add_string (&p, &left, ","); | |
11610 | ||
11611 | remote_buffer_add_int (&p, &left, offset); | |
11612 | ||
11613 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11614 | remote_errno, &attachment, | |
11615 | &attachment_len); | |
11616 | ||
11617 | if (ret < 0) | |
11618 | return ret; | |
11619 | ||
bc20a4af | 11620 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11621 | read_buf, len); |
11622 | if (read_len != ret) | |
11623 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11624 | ||
11625 | return ret; | |
11626 | } | |
11627 | ||
80152258 PA |
11628 | /* Serve pread from the readahead cache. Returns number of bytes |
11629 | read, or 0 if the request can't be served from the cache. */ | |
11630 | ||
11631 | static int | |
11632 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11633 | int fd, gdb_byte *read_buf, size_t len, | |
11634 | ULONGEST offset) | |
11635 | { | |
11636 | struct readahead_cache *cache = &rs->readahead_cache; | |
11637 | ||
11638 | if (cache->fd == fd | |
11639 | && cache->offset <= offset | |
11640 | && offset < cache->offset + cache->bufsize) | |
11641 | { | |
11642 | ULONGEST max = cache->offset + cache->bufsize; | |
11643 | ||
11644 | if (offset + len > max) | |
11645 | len = max - offset; | |
11646 | ||
11647 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11648 | return len; | |
11649 | } | |
11650 | ||
11651 | return 0; | |
11652 | } | |
11653 | ||
11654 | /* Implementation of to_fileio_pread. */ | |
11655 | ||
11656 | static int | |
11657 | remote_hostio_pread (struct target_ops *self, | |
11658 | int fd, gdb_byte *read_buf, int len, | |
11659 | ULONGEST offset, int *remote_errno) | |
11660 | { | |
11661 | int ret; | |
11662 | struct remote_state *rs = get_remote_state (); | |
11663 | struct readahead_cache *cache = &rs->readahead_cache; | |
11664 | ||
11665 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11666 | if (ret > 0) | |
11667 | { | |
11668 | cache->hit_count++; | |
11669 | ||
11670 | if (remote_debug) | |
11671 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11672 | pulongest (cache->hit_count)); | |
11673 | return ret; | |
11674 | } | |
11675 | ||
11676 | cache->miss_count++; | |
11677 | if (remote_debug) | |
11678 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11679 | pulongest (cache->miss_count)); | |
11680 | ||
11681 | cache->fd = fd; | |
11682 | cache->offset = offset; | |
11683 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11684 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11685 | |
11686 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11687 | cache->offset, remote_errno); | |
11688 | if (ret <= 0) | |
11689 | { | |
11690 | readahead_cache_invalidate_fd (fd); | |
11691 | return ret; | |
11692 | } | |
11693 | ||
11694 | cache->bufsize = ret; | |
11695 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11696 | } | |
11697 | ||
12e2a5fd | 11698 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11699 | |
11700 | static int | |
df39ea25 | 11701 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11702 | { |
11703 | struct remote_state *rs = get_remote_state (); | |
11704 | char *p = rs->buf; | |
11705 | int left = get_remote_packet_size () - 1; | |
11706 | ||
80152258 PA |
11707 | readahead_cache_invalidate_fd (fd); |
11708 | ||
a6b151f1 DJ |
11709 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11710 | ||
11711 | remote_buffer_add_int (&p, &left, fd); | |
11712 | ||
11713 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11714 | remote_errno, NULL, NULL); | |
11715 | } | |
11716 | ||
12e2a5fd | 11717 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11718 | |
11719 | static int | |
dbbca37d | 11720 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11721 | struct inferior *inf, const char *filename, |
11722 | int *remote_errno) | |
a6b151f1 DJ |
11723 | { |
11724 | struct remote_state *rs = get_remote_state (); | |
11725 | char *p = rs->buf; | |
11726 | int left = get_remote_packet_size () - 1; | |
11727 | ||
15a201c8 GB |
11728 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11729 | return -1; | |
11730 | ||
a6b151f1 DJ |
11731 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11732 | ||
11733 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11734 | strlen (filename)); | |
11735 | ||
11736 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11737 | remote_errno, NULL, NULL); | |
11738 | } | |
11739 | ||
12e2a5fd | 11740 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
11741 | |
11742 | static char * | |
fab5aa7c | 11743 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11744 | struct inferior *inf, const char *filename, |
11745 | int *remote_errno) | |
b9e7b9c3 UW |
11746 | { |
11747 | struct remote_state *rs = get_remote_state (); | |
11748 | char *p = rs->buf; | |
11749 | char *attachment; | |
11750 | int left = get_remote_packet_size (); | |
11751 | int len, attachment_len; | |
11752 | int read_len; | |
11753 | char *ret; | |
11754 | ||
15a201c8 GB |
11755 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11756 | return NULL; | |
11757 | ||
b9e7b9c3 UW |
11758 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11759 | ||
11760 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11761 | strlen (filename)); | |
11762 | ||
11763 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11764 | remote_errno, &attachment, | |
11765 | &attachment_len); | |
11766 | ||
11767 | if (len < 0) | |
11768 | return NULL; | |
11769 | ||
224c3ddb | 11770 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 11771 | |
bc20a4af PA |
11772 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11773 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
11774 | if (read_len != len) |
11775 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11776 | ||
11777 | ret[len] = '\0'; | |
11778 | return ret; | |
11779 | } | |
11780 | ||
12e2a5fd | 11781 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11782 | |
11783 | static int | |
11784 | remote_hostio_fstat (struct target_ops *self, | |
11785 | int fd, struct stat *st, | |
11786 | int *remote_errno) | |
11787 | { | |
11788 | struct remote_state *rs = get_remote_state (); | |
11789 | char *p = rs->buf; | |
11790 | int left = get_remote_packet_size (); | |
11791 | int attachment_len, ret; | |
11792 | char *attachment; | |
11793 | struct fio_stat fst; | |
11794 | int read_len; | |
11795 | ||
464b0089 GB |
11796 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11797 | ||
11798 | remote_buffer_add_int (&p, &left, fd); | |
11799 | ||
11800 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11801 | remote_errno, &attachment, | |
11802 | &attachment_len); | |
11803 | if (ret < 0) | |
0a93529c | 11804 | { |
464b0089 GB |
11805 | if (*remote_errno != FILEIO_ENOSYS) |
11806 | return ret; | |
11807 | ||
0a93529c GB |
11808 | /* Strictly we should return -1, ENOSYS here, but when |
11809 | "set sysroot remote:" was implemented in August 2008 | |
11810 | BFD's need for a stat function was sidestepped with | |
11811 | this hack. This was not remedied until March 2015 | |
11812 | so we retain the previous behavior to avoid breaking | |
11813 | compatibility. | |
11814 | ||
11815 | Note that the memset is a March 2015 addition; older | |
11816 | GDBs set st_size *and nothing else* so the structure | |
11817 | would have garbage in all other fields. This might | |
11818 | break something but retaining the previous behavior | |
11819 | here would be just too wrong. */ | |
11820 | ||
11821 | memset (st, 0, sizeof (struct stat)); | |
11822 | st->st_size = INT_MAX; | |
11823 | return 0; | |
11824 | } | |
11825 | ||
0a93529c GB |
11826 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11827 | (gdb_byte *) &fst, sizeof (fst)); | |
11828 | ||
11829 | if (read_len != ret) | |
11830 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11831 | ||
11832 | if (read_len != sizeof (fst)) | |
11833 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11834 | read_len, (int) sizeof (fst)); | |
11835 | ||
11836 | remote_fileio_to_host_stat (&fst, st); | |
11837 | ||
11838 | return 0; | |
11839 | } | |
11840 | ||
12e2a5fd | 11841 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11842 | |
11843 | static int | |
11844 | remote_filesystem_is_local (struct target_ops *self) | |
11845 | { | |
11846 | /* Valgrind GDB presents itself as a remote target but works | |
11847 | on the local filesystem: it does not implement remote get | |
11848 | and users are not expected to set a sysroot. To handle | |
11849 | this case we treat the remote filesystem as local if the | |
11850 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11851 | does not support vFile:open. */ | |
a3be80c3 | 11852 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11853 | { |
11854 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11855 | ||
11856 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11857 | { | |
11858 | int fd, remote_errno; | |
11859 | ||
11860 | /* Try opening a file to probe support. The supplied | |
11861 | filename is irrelevant, we only care about whether | |
11862 | the stub recognizes the packet or not. */ | |
07c138c8 | 11863 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11864 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11865 | &remote_errno); |
11866 | ||
11867 | if (fd >= 0) | |
11868 | remote_hostio_close (self, fd, &remote_errno); | |
11869 | ||
11870 | ps = packet_support (PACKET_vFile_open); | |
11871 | } | |
11872 | ||
11873 | if (ps == PACKET_DISABLE) | |
11874 | { | |
11875 | static int warning_issued = 0; | |
11876 | ||
11877 | if (!warning_issued) | |
11878 | { | |
11879 | warning (_("remote target does not support file" | |
11880 | " transfer, attempting to access files" | |
11881 | " from local filesystem.")); | |
11882 | warning_issued = 1; | |
11883 | } | |
11884 | ||
11885 | return 1; | |
11886 | } | |
11887 | } | |
11888 | ||
11889 | return 0; | |
11890 | } | |
11891 | ||
a6b151f1 DJ |
11892 | static int |
11893 | remote_fileio_errno_to_host (int errnum) | |
11894 | { | |
11895 | switch (errnum) | |
11896 | { | |
11897 | case FILEIO_EPERM: | |
11898 | return EPERM; | |
11899 | case FILEIO_ENOENT: | |
11900 | return ENOENT; | |
11901 | case FILEIO_EINTR: | |
11902 | return EINTR; | |
11903 | case FILEIO_EIO: | |
11904 | return EIO; | |
11905 | case FILEIO_EBADF: | |
11906 | return EBADF; | |
11907 | case FILEIO_EACCES: | |
11908 | return EACCES; | |
11909 | case FILEIO_EFAULT: | |
11910 | return EFAULT; | |
11911 | case FILEIO_EBUSY: | |
11912 | return EBUSY; | |
11913 | case FILEIO_EEXIST: | |
11914 | return EEXIST; | |
11915 | case FILEIO_ENODEV: | |
11916 | return ENODEV; | |
11917 | case FILEIO_ENOTDIR: | |
11918 | return ENOTDIR; | |
11919 | case FILEIO_EISDIR: | |
11920 | return EISDIR; | |
11921 | case FILEIO_EINVAL: | |
11922 | return EINVAL; | |
11923 | case FILEIO_ENFILE: | |
11924 | return ENFILE; | |
11925 | case FILEIO_EMFILE: | |
11926 | return EMFILE; | |
11927 | case FILEIO_EFBIG: | |
11928 | return EFBIG; | |
11929 | case FILEIO_ENOSPC: | |
11930 | return ENOSPC; | |
11931 | case FILEIO_ESPIPE: | |
11932 | return ESPIPE; | |
11933 | case FILEIO_EROFS: | |
11934 | return EROFS; | |
11935 | case FILEIO_ENOSYS: | |
11936 | return ENOSYS; | |
11937 | case FILEIO_ENAMETOOLONG: | |
11938 | return ENAMETOOLONG; | |
11939 | } | |
11940 | return -1; | |
11941 | } | |
11942 | ||
11943 | static char * | |
11944 | remote_hostio_error (int errnum) | |
11945 | { | |
11946 | int host_error = remote_fileio_errno_to_host (errnum); | |
11947 | ||
11948 | if (host_error == -1) | |
11949 | error (_("Unknown remote I/O error %d"), errnum); | |
11950 | else | |
11951 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11952 | } | |
11953 | ||
a6b151f1 DJ |
11954 | static void |
11955 | remote_hostio_close_cleanup (void *opaque) | |
11956 | { | |
11957 | int fd = *(int *) opaque; | |
11958 | int remote_errno; | |
11959 | ||
df39ea25 | 11960 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11961 | } |
11962 | ||
11963 | void | |
11964 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11965 | { | |
11966 | struct cleanup *back_to, *close_cleanup; | |
11967 | int retcode, fd, remote_errno, bytes, io_size; | |
a6b151f1 DJ |
11968 | gdb_byte *buffer; |
11969 | int bytes_in_buffer; | |
11970 | int saw_eof; | |
11971 | ULONGEST offset; | |
5d93a237 | 11972 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11973 | |
5d93a237 | 11974 | if (!rs->remote_desc) |
a6b151f1 DJ |
11975 | error (_("command can only be used with remote target")); |
11976 | ||
d419f42d | 11977 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11978 | if (file == NULL) |
11979 | perror_with_name (local_file); | |
a6b151f1 | 11980 | |
07c138c8 | 11981 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11982 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11983 | | FILEIO_O_TRUNC), |
4313b8c0 | 11984 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11985 | if (fd == -1) |
11986 | remote_hostio_error (remote_errno); | |
11987 | ||
11988 | /* Send up to this many bytes at once. They won't all fit in the | |
11989 | remote packet limit, so we'll transfer slightly fewer. */ | |
11990 | io_size = get_remote_packet_size (); | |
224c3ddb | 11991 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 11992 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
11993 | |
11994 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11995 | ||
11996 | bytes_in_buffer = 0; | |
11997 | saw_eof = 0; | |
11998 | offset = 0; | |
11999 | while (bytes_in_buffer || !saw_eof) | |
12000 | { | |
12001 | if (!saw_eof) | |
12002 | { | |
3e43a32a MS |
12003 | bytes = fread (buffer + bytes_in_buffer, 1, |
12004 | io_size - bytes_in_buffer, | |
d419f42d | 12005 | file.get ()); |
a6b151f1 DJ |
12006 | if (bytes == 0) |
12007 | { | |
d419f42d | 12008 | if (ferror (file.get ())) |
a6b151f1 DJ |
12009 | error (_("Error reading %s."), local_file); |
12010 | else | |
12011 | { | |
12012 | /* EOF. Unless there is something still in the | |
12013 | buffer from the last iteration, we are done. */ | |
12014 | saw_eof = 1; | |
12015 | if (bytes_in_buffer == 0) | |
12016 | break; | |
12017 | } | |
12018 | } | |
12019 | } | |
12020 | else | |
12021 | bytes = 0; | |
12022 | ||
12023 | bytes += bytes_in_buffer; | |
12024 | bytes_in_buffer = 0; | |
12025 | ||
0d866f62 TT |
12026 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
12027 | fd, buffer, bytes, | |
3e43a32a | 12028 | offset, &remote_errno); |
a6b151f1 DJ |
12029 | |
12030 | if (retcode < 0) | |
12031 | remote_hostio_error (remote_errno); | |
12032 | else if (retcode == 0) | |
12033 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12034 | else if (retcode < bytes) | |
12035 | { | |
12036 | /* Short write. Save the rest of the read data for the next | |
12037 | write. */ | |
12038 | bytes_in_buffer = bytes - retcode; | |
12039 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
12040 | } | |
12041 | ||
12042 | offset += retcode; | |
12043 | } | |
12044 | ||
12045 | discard_cleanups (close_cleanup); | |
df39ea25 | 12046 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12047 | remote_hostio_error (remote_errno); |
12048 | ||
12049 | if (from_tty) | |
12050 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
12051 | do_cleanups (back_to); | |
12052 | } | |
12053 | ||
12054 | void | |
12055 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
12056 | { | |
12057 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 12058 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12059 | gdb_byte *buffer; |
12060 | ULONGEST offset; | |
5d93a237 | 12061 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12062 | |
5d93a237 | 12063 | if (!rs->remote_desc) |
a6b151f1 DJ |
12064 | error (_("command can only be used with remote target")); |
12065 | ||
07c138c8 | 12066 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
12067 | remote_file, FILEIO_O_RDONLY, 0, 0, |
12068 | &remote_errno); | |
a6b151f1 DJ |
12069 | if (fd == -1) |
12070 | remote_hostio_error (remote_errno); | |
12071 | ||
d419f42d | 12072 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12073 | if (file == NULL) |
12074 | perror_with_name (local_file); | |
a6b151f1 DJ |
12075 | |
12076 | /* Send up to this many bytes at once. They won't all fit in the | |
12077 | remote packet limit, so we'll transfer slightly fewer. */ | |
12078 | io_size = get_remote_packet_size (); | |
224c3ddb | 12079 | buffer = (gdb_byte *) xmalloc (io_size); |
d419f42d | 12080 | back_to = make_cleanup (xfree, buffer); |
a6b151f1 DJ |
12081 | |
12082 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
12083 | ||
12084 | offset = 0; | |
12085 | while (1) | |
12086 | { | |
a3be983c TT |
12087 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
12088 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
12089 | if (bytes == 0) |
12090 | /* Success, but no bytes, means end-of-file. */ | |
12091 | break; | |
12092 | if (bytes == -1) | |
12093 | remote_hostio_error (remote_errno); | |
12094 | ||
12095 | offset += bytes; | |
12096 | ||
d419f42d | 12097 | bytes = fwrite (buffer, 1, bytes, file.get ()); |
a6b151f1 DJ |
12098 | if (bytes == 0) |
12099 | perror_with_name (local_file); | |
12100 | } | |
12101 | ||
12102 | discard_cleanups (close_cleanup); | |
df39ea25 | 12103 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
12104 | remote_hostio_error (remote_errno); |
12105 | ||
12106 | if (from_tty) | |
12107 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
12108 | do_cleanups (back_to); | |
12109 | } | |
12110 | ||
12111 | void | |
12112 | remote_file_delete (const char *remote_file, int from_tty) | |
12113 | { | |
12114 | int retcode, remote_errno; | |
5d93a237 | 12115 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 12116 | |
5d93a237 | 12117 | if (!rs->remote_desc) |
a6b151f1 DJ |
12118 | error (_("command can only be used with remote target")); |
12119 | ||
dbbca37d | 12120 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 12121 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
12122 | if (retcode == -1) |
12123 | remote_hostio_error (remote_errno); | |
12124 | ||
12125 | if (from_tty) | |
12126 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12127 | } | |
12128 | ||
12129 | static void | |
12130 | remote_put_command (char *args, int from_tty) | |
12131 | { | |
d1a41061 PP |
12132 | if (args == NULL) |
12133 | error_no_arg (_("file to put")); | |
12134 | ||
773a1edc | 12135 | gdb_argv argv (args); |
a6b151f1 DJ |
12136 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12137 | error (_("Invalid parameters to remote put")); | |
12138 | ||
12139 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12140 | } |
12141 | ||
12142 | static void | |
12143 | remote_get_command (char *args, int from_tty) | |
12144 | { | |
d1a41061 PP |
12145 | if (args == NULL) |
12146 | error_no_arg (_("file to get")); | |
12147 | ||
773a1edc | 12148 | gdb_argv argv (args); |
a6b151f1 DJ |
12149 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12150 | error (_("Invalid parameters to remote get")); | |
12151 | ||
12152 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12153 | } |
12154 | ||
12155 | static void | |
12156 | remote_delete_command (char *args, int from_tty) | |
12157 | { | |
d1a41061 PP |
12158 | if (args == NULL) |
12159 | error_no_arg (_("file to delete")); | |
12160 | ||
773a1edc | 12161 | gdb_argv argv (args); |
a6b151f1 DJ |
12162 | if (argv[0] == NULL || argv[1] != NULL) |
12163 | error (_("Invalid parameters to remote delete")); | |
12164 | ||
12165 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12166 | } |
12167 | ||
12168 | static void | |
12169 | remote_command (char *args, int from_tty) | |
12170 | { | |
635c7e8a | 12171 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12172 | } |
12173 | ||
b2175913 | 12174 | static int |
19db3e69 | 12175 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 12176 | { |
4082afcc PA |
12177 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12178 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
12179 | return 1; |
12180 | else | |
12181 | return 0; | |
b2175913 MS |
12182 | } |
12183 | ||
74531fed | 12184 | static int |
2a9a2795 | 12185 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
12186 | { |
12187 | return 1; | |
12188 | } | |
12189 | ||
03583c20 | 12190 | static int |
2bfc0540 | 12191 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
12192 | { |
12193 | /* Only supported in extended mode. */ | |
12194 | return 0; | |
12195 | } | |
12196 | ||
8a305172 | 12197 | static int |
86ce2668 | 12198 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
12199 | { |
12200 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12201 | |
8020350c | 12202 | return remote_multi_process_p (rs); |
8a305172 PA |
12203 | } |
12204 | ||
70221824 | 12205 | static int |
782b2b07 SS |
12206 | remote_supports_cond_tracepoints (void) |
12207 | { | |
4082afcc | 12208 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12209 | } |
12210 | ||
3788aec7 | 12211 | static int |
efcc2da7 | 12212 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 12213 | { |
4082afcc | 12214 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12215 | } |
12216 | ||
70221824 | 12217 | static int |
7a697b8d SS |
12218 | remote_supports_fast_tracepoints (void) |
12219 | { | |
4082afcc | 12220 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12221 | } |
12222 | ||
0fb4aa4b PA |
12223 | static int |
12224 | remote_supports_static_tracepoints (void) | |
12225 | { | |
4082afcc | 12226 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12227 | } |
12228 | ||
1e4d1764 YQ |
12229 | static int |
12230 | remote_supports_install_in_trace (void) | |
12231 | { | |
4082afcc | 12232 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12233 | } |
12234 | ||
d248b706 | 12235 | static int |
7d178d6a | 12236 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 12237 | { |
4082afcc PA |
12238 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12239 | == PACKET_ENABLE); | |
d248b706 KY |
12240 | } |
12241 | ||
3065dfb6 | 12242 | static int |
6de37a3a | 12243 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 12244 | { |
4082afcc | 12245 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12246 | } |
12247 | ||
d3ce09f5 | 12248 | static int |
78eff0ec | 12249 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 12250 | { |
4082afcc | 12251 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12252 | } |
12253 | ||
35b1e5cc | 12254 | static void |
ecae04e1 | 12255 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
12256 | { |
12257 | putpkt ("QTinit"); | |
12258 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 12259 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
12260 | error (_("Target does not support this command.")); |
12261 | } | |
12262 | ||
12263 | static void free_actions_list (char **actions_list); | |
12264 | static void free_actions_list_cleanup_wrapper (void *); | |
12265 | static void | |
12266 | free_actions_list_cleanup_wrapper (void *al) | |
12267 | { | |
19ba03f4 | 12268 | free_actions_list ((char **) al); |
35b1e5cc SS |
12269 | } |
12270 | ||
12271 | static void | |
12272 | free_actions_list (char **actions_list) | |
12273 | { | |
12274 | int ndx; | |
12275 | ||
12276 | if (actions_list == 0) | |
12277 | return; | |
12278 | ||
12279 | for (ndx = 0; actions_list[ndx]; ndx++) | |
12280 | xfree (actions_list[ndx]); | |
12281 | ||
12282 | xfree (actions_list); | |
12283 | } | |
12284 | ||
409873ef SS |
12285 | /* Recursive routine to walk through command list including loops, and |
12286 | download packets for each command. */ | |
12287 | ||
12288 | static void | |
12289 | remote_download_command_source (int num, ULONGEST addr, | |
12290 | struct command_line *cmds) | |
12291 | { | |
12292 | struct remote_state *rs = get_remote_state (); | |
12293 | struct command_line *cmd; | |
12294 | ||
12295 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12296 | { | |
0df8b418 | 12297 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12298 | strcpy (rs->buf, "QTDPsrc:"); |
12299 | encode_source_string (num, addr, "cmd", cmd->line, | |
12300 | rs->buf + strlen (rs->buf), | |
12301 | rs->buf_size - strlen (rs->buf)); | |
12302 | putpkt (rs->buf); | |
12303 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12304 | if (strcmp (target_buf, "OK")) | |
12305 | warning (_("Target does not support source download.")); | |
12306 | ||
12307 | if (cmd->control_type == while_control | |
12308 | || cmd->control_type == while_stepping_control) | |
12309 | { | |
12310 | remote_download_command_source (num, addr, *cmd->body_list); | |
12311 | ||
0df8b418 | 12312 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
12313 | strcpy (rs->buf, "QTDPsrc:"); |
12314 | encode_source_string (num, addr, "cmd", "end", | |
12315 | rs->buf + strlen (rs->buf), | |
12316 | rs->buf_size - strlen (rs->buf)); | |
12317 | putpkt (rs->buf); | |
12318 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12319 | if (strcmp (target_buf, "OK")) | |
12320 | warning (_("Target does not support source download.")); | |
12321 | } | |
12322 | } | |
12323 | } | |
12324 | ||
35b1e5cc | 12325 | static void |
548f7808 | 12326 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 12327 | { |
bba74b36 | 12328 | #define BUF_SIZE 2048 |
e8ba3115 | 12329 | |
35b1e5cc | 12330 | CORE_ADDR tpaddr; |
409873ef | 12331 | char addrbuf[40]; |
bba74b36 | 12332 | char buf[BUF_SIZE]; |
35b1e5cc SS |
12333 | char **tdp_actions; |
12334 | char **stepping_actions; | |
12335 | int ndx; | |
12336 | struct cleanup *old_chain = NULL; | |
35b1e5cc | 12337 | char *pkt; |
e8ba3115 | 12338 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12339 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 12340 | |
dc673c81 | 12341 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12342 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
12343 | tdp_actions); | |
12344 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
12345 | stepping_actions); | |
12346 | ||
12347 | tpaddr = loc->address; | |
12348 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
12349 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
12350 | addrbuf, /* address */ | |
12351 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12352 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
12353 | /* Fast tracepoints are mostly handled by the target, but we can |
12354 | tell the target how big of an instruction block should be moved | |
12355 | around. */ | |
12356 | if (b->type == bp_fast_tracepoint) | |
12357 | { | |
12358 | /* Only test for support at download time; we may not know | |
12359 | target capabilities at definition time. */ | |
12360 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12361 | { |
6b940e6a PL |
12362 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12363 | NULL)) | |
bba74b36 | 12364 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 12365 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 12366 | else |
e8ba3115 YQ |
12367 | /* If it passed validation at definition but fails now, |
12368 | something is very wrong. */ | |
12369 | internal_error (__FILE__, __LINE__, | |
12370 | _("Fast tracepoint not " | |
12371 | "valid during download")); | |
35b1e5cc | 12372 | } |
e8ba3115 YQ |
12373 | else |
12374 | /* Fast tracepoints are functionally identical to regular | |
12375 | tracepoints, so don't take lack of support as a reason to | |
12376 | give up on the trace run. */ | |
12377 | warning (_("Target does not support fast tracepoints, " | |
12378 | "downloading %d as regular tracepoint"), b->number); | |
12379 | } | |
12380 | else if (b->type == bp_static_tracepoint) | |
12381 | { | |
12382 | /* Only test for support at download time; we may not know | |
12383 | target capabilities at definition time. */ | |
12384 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12385 | { |
e8ba3115 | 12386 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12387 | |
e8ba3115 YQ |
12388 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
12389 | strcat (buf, ":S"); | |
0fb4aa4b | 12390 | else |
e8ba3115 | 12391 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12392 | } |
e8ba3115 YQ |
12393 | else |
12394 | /* Fast tracepoints are functionally identical to regular | |
12395 | tracepoints, so don't take lack of support as a reason | |
12396 | to give up on the trace run. */ | |
12397 | error (_("Target does not support static tracepoints")); | |
12398 | } | |
12399 | /* If the tracepoint has a conditional, make it into an agent | |
12400 | expression and append to the definition. */ | |
12401 | if (loc->cond) | |
12402 | { | |
12403 | /* Only test support at download time, we may not know target | |
12404 | capabilities at definition time. */ | |
12405 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12406 | { |
833177a4 | 12407 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, loc->cond.get ()); |
bba74b36 YQ |
12408 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
12409 | aexpr->len); | |
e8ba3115 YQ |
12410 | pkt = buf + strlen (buf); |
12411 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
12412 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
12413 | *pkt = '\0'; | |
35b1e5cc | 12414 | } |
e8ba3115 YQ |
12415 | else |
12416 | warning (_("Target does not support conditional tracepoints, " | |
12417 | "ignoring tp %d cond"), b->number); | |
12418 | } | |
35b1e5cc | 12419 | |
d9b3f62e | 12420 | if (b->commands || *default_collect) |
e8ba3115 YQ |
12421 | strcat (buf, "-"); |
12422 | putpkt (buf); | |
12423 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12424 | if (strcmp (target_buf, "OK")) | |
12425 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 12426 | |
e8ba3115 YQ |
12427 | /* do_single_steps (t); */ |
12428 | if (tdp_actions) | |
12429 | { | |
12430 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 12431 | { |
e8ba3115 | 12432 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12433 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
12434 | b->number, addrbuf, /* address */ | |
12435 | tdp_actions[ndx], | |
12436 | ((tdp_actions[ndx + 1] || stepping_actions) | |
12437 | ? '-' : 0)); | |
e8ba3115 YQ |
12438 | putpkt (buf); |
12439 | remote_get_noisy_reply (&target_buf, | |
12440 | &target_buf_size); | |
12441 | if (strcmp (target_buf, "OK")) | |
12442 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12443 | } |
e8ba3115 YQ |
12444 | } |
12445 | if (stepping_actions) | |
12446 | { | |
12447 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 12448 | { |
e8ba3115 | 12449 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12450 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
12451 | b->number, addrbuf, /* address */ | |
12452 | ((ndx == 0) ? "S" : ""), | |
12453 | stepping_actions[ndx], | |
12454 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
12455 | putpkt (buf); |
12456 | remote_get_noisy_reply (&target_buf, | |
12457 | &target_buf_size); | |
12458 | if (strcmp (target_buf, "OK")) | |
12459 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12460 | } |
e8ba3115 | 12461 | } |
409873ef | 12462 | |
4082afcc | 12463 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12464 | { |
f00aae0f | 12465 | if (b->location != NULL) |
409873ef | 12466 | { |
e8ba3115 | 12467 | strcpy (buf, "QTDPsrc:"); |
f00aae0f | 12468 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12469 | event_location_to_string (b->location.get ()), |
f00aae0f | 12470 | buf + strlen (buf), 2048 - strlen (buf)); |
e8ba3115 YQ |
12471 | putpkt (buf); |
12472 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12473 | if (strcmp (target_buf, "OK")) | |
12474 | warning (_("Target does not support source download.")); | |
409873ef | 12475 | } |
e8ba3115 YQ |
12476 | if (b->cond_string) |
12477 | { | |
12478 | strcpy (buf, "QTDPsrc:"); | |
12479 | encode_source_string (b->number, loc->address, | |
12480 | "cond", b->cond_string, buf + strlen (buf), | |
12481 | 2048 - strlen (buf)); | |
12482 | putpkt (buf); | |
12483 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12484 | if (strcmp (target_buf, "OK")) | |
12485 | warning (_("Target does not support source download.")); | |
12486 | } | |
12487 | remote_download_command_source (b->number, loc->address, | |
12488 | breakpoint_commands (b)); | |
35b1e5cc | 12489 | } |
e8ba3115 YQ |
12490 | |
12491 | do_cleanups (old_chain); | |
35b1e5cc SS |
12492 | } |
12493 | ||
1e4d1764 | 12494 | static int |
a52a8357 | 12495 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12496 | { |
1e51243a PA |
12497 | struct remote_state *rs = get_remote_state (); |
12498 | struct trace_status *ts; | |
12499 | int status; | |
12500 | ||
12501 | /* Don't try to install tracepoints until we've relocated our | |
12502 | symbols, and fetched and merged the target's tracepoint list with | |
12503 | ours. */ | |
12504 | if (rs->starting_up) | |
12505 | return 0; | |
12506 | ||
12507 | ts = current_trace_status (); | |
8bd200f1 | 12508 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12509 | |
12510 | if (status == -1 || !ts->running_known || !ts->running) | |
12511 | return 0; | |
12512 | ||
12513 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12514 | installing tracepoint in trace, we have to return. */ | |
12515 | if (!remote_supports_install_in_trace ()) | |
12516 | return 0; | |
12517 | ||
12518 | return 1; | |
12519 | } | |
12520 | ||
12521 | ||
35b1e5cc | 12522 | static void |
559d2b81 TT |
12523 | remote_download_trace_state_variable (struct target_ops *self, |
12524 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
12525 | { |
12526 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12527 | char *p; |
35b1e5cc | 12528 | |
bba74b36 YQ |
12529 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
12530 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
12531 | tsv->builtin); | |
00bf0b85 SS |
12532 | p = rs->buf + strlen (rs->buf); |
12533 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
12534 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 12535 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 12536 | *p++ = '\0'; |
35b1e5cc SS |
12537 | putpkt (rs->buf); |
12538 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12539 | if (*target_buf == '\0') |
12540 | error (_("Target does not support this command.")); | |
12541 | if (strcmp (target_buf, "OK") != 0) | |
12542 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
12543 | } |
12544 | ||
d248b706 | 12545 | static void |
46670d57 TT |
12546 | remote_enable_tracepoint (struct target_ops *self, |
12547 | struct bp_location *location) | |
d248b706 KY |
12548 | { |
12549 | struct remote_state *rs = get_remote_state (); | |
12550 | char addr_buf[40]; | |
12551 | ||
12552 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12553 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12554 | location->owner->number, addr_buf); | |
d248b706 KY |
12555 | putpkt (rs->buf); |
12556 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12557 | if (*rs->buf == '\0') | |
12558 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12559 | if (strcmp (rs->buf, "OK") != 0) | |
12560 | error (_("Error on target while enabling tracepoint.")); | |
12561 | } | |
12562 | ||
12563 | static void | |
780b049c TT |
12564 | remote_disable_tracepoint (struct target_ops *self, |
12565 | struct bp_location *location) | |
d248b706 KY |
12566 | { |
12567 | struct remote_state *rs = get_remote_state (); | |
12568 | char addr_buf[40]; | |
12569 | ||
12570 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12571 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12572 | location->owner->number, addr_buf); | |
d248b706 KY |
12573 | putpkt (rs->buf); |
12574 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12575 | if (*rs->buf == '\0') | |
12576 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12577 | if (strcmp (rs->buf, "OK") != 0) | |
12578 | error (_("Error on target while disabling tracepoint.")); | |
12579 | } | |
12580 | ||
35b1e5cc | 12581 | static void |
583f9a86 | 12582 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12583 | { |
12584 | asection *s; | |
81b9b86e | 12585 | bfd *abfd = NULL; |
35b1e5cc | 12586 | bfd_size_type size; |
608bcef2 | 12587 | bfd_vma vma; |
35b1e5cc | 12588 | int anysecs = 0; |
c2fa21f1 | 12589 | int offset = 0; |
35b1e5cc SS |
12590 | |
12591 | if (!exec_bfd) | |
12592 | return; /* No information to give. */ | |
12593 | ||
12594 | strcpy (target_buf, "QTro"); | |
9779ab84 | 12595 | offset = strlen (target_buf); |
35b1e5cc SS |
12596 | for (s = exec_bfd->sections; s; s = s->next) |
12597 | { | |
12598 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12599 | int sec_length; |
35b1e5cc SS |
12600 | |
12601 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12602 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12603 | (s->flags & SEC_READONLY) == 0) |
12604 | continue; | |
12605 | ||
12606 | anysecs = 1; | |
81b9b86e | 12607 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12608 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12609 | sprintf_vma (tmp1, vma); |
12610 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
12611 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
12612 | if (offset + sec_length + 1 > target_buf_size) | |
12613 | { | |
4082afcc | 12614 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12615 | warning (_("\ |
c2fa21f1 HZ |
12616 | Too many sections for read-only sections definition packet.")); |
12617 | break; | |
12618 | } | |
bba74b36 YQ |
12619 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
12620 | tmp1, tmp2); | |
c2fa21f1 | 12621 | offset += sec_length; |
35b1e5cc SS |
12622 | } |
12623 | if (anysecs) | |
12624 | { | |
12625 | putpkt (target_buf); | |
12626 | getpkt (&target_buf, &target_buf_size, 0); | |
12627 | } | |
12628 | } | |
12629 | ||
12630 | static void | |
e2d1aae3 | 12631 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
12632 | { |
12633 | putpkt ("QTStart"); | |
12634 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12635 | if (*target_buf == '\0') |
12636 | error (_("Target does not support this command.")); | |
12637 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12638 | error (_("Bogus reply from target: %s"), target_buf); |
12639 | } | |
12640 | ||
12641 | static int | |
8bd200f1 | 12642 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12643 | { |
953b98d1 | 12644 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12645 | char *p = NULL; |
0df8b418 | 12646 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12647 | extern int trace_regblock_size; |
bd3eecc3 PA |
12648 | enum packet_result result; |
12649 | ||
4082afcc | 12650 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12651 | return -1; |
a744cf53 | 12652 | |
00bf0b85 SS |
12653 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
12654 | ||
049dc89b JK |
12655 | putpkt ("qTStatus"); |
12656 | ||
492d29ea | 12657 | TRY |
67f41397 JK |
12658 | { |
12659 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12660 | } | |
492d29ea | 12661 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12662 | { |
598d3636 JK |
12663 | if (ex.error != TARGET_CLOSE_ERROR) |
12664 | { | |
12665 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12666 | return -1; | |
12667 | } | |
12668 | throw_exception (ex); | |
67f41397 | 12669 | } |
492d29ea | 12670 | END_CATCH |
00bf0b85 | 12671 | |
bd3eecc3 PA |
12672 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12673 | ||
00bf0b85 | 12674 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12675 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12676 | return -1; |
35b1e5cc | 12677 | |
00bf0b85 | 12678 | /* We're working with a live target. */ |
f5911ea1 | 12679 | ts->filename = NULL; |
00bf0b85 | 12680 | |
00bf0b85 | 12681 | if (*p++ != 'T') |
35b1e5cc SS |
12682 | error (_("Bogus trace status reply from target: %s"), target_buf); |
12683 | ||
84cebc4a YQ |
12684 | /* Function 'parse_trace_status' sets default value of each field of |
12685 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12686 | parse_trace_status (p, ts); |
12687 | ||
12688 | return ts->running; | |
35b1e5cc SS |
12689 | } |
12690 | ||
70221824 | 12691 | static void |
db90e85c | 12692 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12693 | struct uploaded_tp *utp) |
12694 | { | |
12695 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12696 | char *reply; |
12697 | struct bp_location *loc; | |
12698 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12699 | size_t size = get_remote_packet_size (); |
f196051f SS |
12700 | |
12701 | if (tp) | |
12702 | { | |
c1fc2657 | 12703 | tp->hit_count = 0; |
f196051f | 12704 | tp->traceframe_usage = 0; |
c1fc2657 | 12705 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
12706 | { |
12707 | /* If the tracepoint was never downloaded, don't go asking for | |
12708 | any status. */ | |
12709 | if (tp->number_on_target == 0) | |
12710 | continue; | |
bba74b36 YQ |
12711 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12712 | phex_nz (loc->address, 0)); | |
f196051f SS |
12713 | putpkt (rs->buf); |
12714 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12715 | if (reply && *reply) | |
12716 | { | |
12717 | if (*reply == 'V') | |
12718 | parse_tracepoint_status (reply + 1, bp, utp); | |
12719 | } | |
12720 | } | |
12721 | } | |
12722 | else if (utp) | |
12723 | { | |
12724 | utp->hit_count = 0; | |
12725 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12726 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12727 | phex_nz (utp->addr, 0)); | |
f196051f SS |
12728 | putpkt (rs->buf); |
12729 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12730 | if (reply && *reply) | |
12731 | { | |
12732 | if (*reply == 'V') | |
12733 | parse_tracepoint_status (reply + 1, bp, utp); | |
12734 | } | |
12735 | } | |
12736 | } | |
12737 | ||
35b1e5cc | 12738 | static void |
74499f1b | 12739 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
12740 | { |
12741 | putpkt ("QTStop"); | |
12742 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12743 | if (*target_buf == '\0') |
12744 | error (_("Target does not support this command.")); | |
12745 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12746 | error (_("Bogus reply from target: %s"), target_buf); |
12747 | } | |
12748 | ||
12749 | static int | |
bd4c6793 TT |
12750 | remote_trace_find (struct target_ops *self, |
12751 | enum trace_find_type type, int num, | |
cc5925ad | 12752 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12753 | int *tpp) |
12754 | { | |
12755 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12756 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12757 | char *p, *reply; |
12758 | int target_frameno = -1, target_tracept = -1; | |
12759 | ||
e6e4e701 PA |
12760 | /* Lookups other than by absolute frame number depend on the current |
12761 | trace selected, so make sure it is correct on the remote end | |
12762 | first. */ | |
12763 | if (type != tfind_number) | |
12764 | set_remote_traceframe (); | |
12765 | ||
35b1e5cc SS |
12766 | p = rs->buf; |
12767 | strcpy (p, "QTFrame:"); | |
12768 | p = strchr (p, '\0'); | |
12769 | switch (type) | |
12770 | { | |
12771 | case tfind_number: | |
bba74b36 | 12772 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12773 | break; |
12774 | case tfind_pc: | |
bba74b36 | 12775 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12776 | break; |
12777 | case tfind_tp: | |
bba74b36 | 12778 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12779 | break; |
12780 | case tfind_range: | |
bba74b36 YQ |
12781 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12782 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12783 | break; |
12784 | case tfind_outside: | |
bba74b36 YQ |
12785 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12786 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12787 | break; |
12788 | default: | |
9b20d036 | 12789 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12790 | } |
12791 | ||
12792 | putpkt (rs->buf); | |
2f65bcb7 | 12793 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
12794 | if (*reply == '\0') |
12795 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12796 | |
12797 | while (reply && *reply) | |
12798 | switch (*reply) | |
12799 | { | |
12800 | case 'F': | |
f197e0f1 VP |
12801 | p = ++reply; |
12802 | target_frameno = (int) strtol (p, &reply, 16); | |
12803 | if (reply == p) | |
12804 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12805 | /* Don't update our remote traceframe number cache on failure |
12806 | to select a remote traceframe. */ | |
f197e0f1 VP |
12807 | if (target_frameno == -1) |
12808 | return -1; | |
35b1e5cc SS |
12809 | break; |
12810 | case 'T': | |
f197e0f1 VP |
12811 | p = ++reply; |
12812 | target_tracept = (int) strtol (p, &reply, 16); | |
12813 | if (reply == p) | |
12814 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12815 | break; |
12816 | case 'O': /* "OK"? */ | |
12817 | if (reply[1] == 'K' && reply[2] == '\0') | |
12818 | reply += 2; | |
12819 | else | |
12820 | error (_("Bogus reply from target: %s"), reply); | |
12821 | break; | |
12822 | default: | |
12823 | error (_("Bogus reply from target: %s"), reply); | |
12824 | } | |
12825 | if (tpp) | |
12826 | *tpp = target_tracept; | |
e6e4e701 | 12827 | |
262e1174 | 12828 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12829 | return target_frameno; |
12830 | } | |
12831 | ||
12832 | static int | |
4011015b TT |
12833 | remote_get_trace_state_variable_value (struct target_ops *self, |
12834 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12835 | { |
12836 | struct remote_state *rs = get_remote_state (); | |
12837 | char *reply; | |
12838 | ULONGEST uval; | |
12839 | ||
e6e4e701 PA |
12840 | set_remote_traceframe (); |
12841 | ||
bba74b36 | 12842 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12843 | putpkt (rs->buf); |
12844 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12845 | if (reply && *reply) | |
12846 | { | |
12847 | if (*reply == 'V') | |
12848 | { | |
12849 | unpack_varlen_hex (reply + 1, &uval); | |
12850 | *val = (LONGEST) uval; | |
12851 | return 1; | |
12852 | } | |
12853 | } | |
12854 | return 0; | |
12855 | } | |
12856 | ||
00bf0b85 | 12857 | static int |
dc3decaf | 12858 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12859 | { |
12860 | struct remote_state *rs = get_remote_state (); | |
12861 | char *p, *reply; | |
12862 | ||
12863 | p = rs->buf; | |
12864 | strcpy (p, "QTSave:"); | |
12865 | p += strlen (p); | |
12866 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12867 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12868 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12869 | *p++ = '\0'; |
12870 | putpkt (rs->buf); | |
ad91cd99 | 12871 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12872 | if (*reply == '\0') |
ad91cd99 PA |
12873 | error (_("Target does not support this command.")); |
12874 | if (strcmp (reply, "OK") != 0) | |
12875 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12876 | return 0; |
12877 | } | |
12878 | ||
12879 | /* This is basically a memory transfer, but needs to be its own packet | |
12880 | because we don't know how the target actually organizes its trace | |
12881 | memory, plus we want to be able to ask for as much as possible, but | |
12882 | not be unhappy if we don't get as much as we ask for. */ | |
12883 | ||
12884 | static LONGEST | |
88ee6f45 TT |
12885 | remote_get_raw_trace_data (struct target_ops *self, |
12886 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12887 | { |
12888 | struct remote_state *rs = get_remote_state (); | |
12889 | char *reply; | |
12890 | char *p; | |
12891 | int rslt; | |
12892 | ||
12893 | p = rs->buf; | |
12894 | strcpy (p, "qTBuffer:"); | |
12895 | p += strlen (p); | |
12896 | p += hexnumstr (p, offset); | |
12897 | *p++ = ','; | |
12898 | p += hexnumstr (p, len); | |
12899 | *p++ = '\0'; | |
12900 | ||
12901 | putpkt (rs->buf); | |
12902 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12903 | if (reply && *reply) | |
12904 | { | |
12905 | /* 'l' by itself means we're at the end of the buffer and | |
12906 | there is nothing more to get. */ | |
12907 | if (*reply == 'l') | |
12908 | return 0; | |
12909 | ||
12910 | /* Convert the reply into binary. Limit the number of bytes to | |
12911 | convert according to our passed-in buffer size, rather than | |
12912 | what was returned in the packet; if the target is | |
12913 | unexpectedly generous and gives us a bigger reply than we | |
12914 | asked for, we don't want to crash. */ | |
12915 | rslt = hex2bin (target_buf, buf, len); | |
12916 | return rslt; | |
12917 | } | |
12918 | ||
12919 | /* Something went wrong, flag as an error. */ | |
12920 | return -1; | |
12921 | } | |
12922 | ||
35b1e5cc | 12923 | static void |
37b25738 | 12924 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12925 | { |
12926 | struct remote_state *rs = get_remote_state (); | |
12927 | ||
4082afcc | 12928 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12929 | { |
ad91cd99 PA |
12930 | char *reply; |
12931 | ||
bba74b36 | 12932 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12933 | putpkt (rs->buf); |
ad91cd99 PA |
12934 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12935 | if (*reply == '\0') | |
33da3f1c | 12936 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12937 | if (strcmp (reply, "OK") != 0) |
12938 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12939 | } |
12940 | else if (val) | |
12941 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12942 | } |
12943 | ||
dc146f7c VP |
12944 | static int |
12945 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12946 | { | |
12947 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12948 | |
fe978cb0 PA |
12949 | if (info && info->priv) |
12950 | return info->priv->core; | |
dc146f7c VP |
12951 | return -1; |
12952 | } | |
12953 | ||
4daf5ac0 | 12954 | static void |
736d5b1f | 12955 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12956 | { |
12957 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12958 | char *reply; |
4daf5ac0 | 12959 | |
bba74b36 | 12960 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12961 | putpkt (rs->buf); |
ad91cd99 PA |
12962 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12963 | if (*reply == '\0') | |
4daf5ac0 | 12964 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12965 | if (strcmp (reply, "OK") != 0) |
12966 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12967 | } |
12968 | ||
b3b9301e | 12969 | static struct traceframe_info * |
a893e81f | 12970 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12971 | { |
12972 | char *text; | |
12973 | ||
12974 | text = target_read_stralloc (¤t_target, | |
12975 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12976 | if (text != NULL) | |
12977 | { | |
12978 | struct traceframe_info *info; | |
12979 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12980 | ||
12981 | info = parse_traceframe_info (text); | |
12982 | do_cleanups (back_to); | |
12983 | return info; | |
12984 | } | |
12985 | ||
12986 | return NULL; | |
12987 | } | |
12988 | ||
405f8e94 SS |
12989 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12990 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12991 | if the packet is not supported, and 0 if the minimum instruction | |
12992 | length is unknown. */ | |
12993 | ||
12994 | static int | |
0e67620a | 12995 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12996 | { |
12997 | struct remote_state *rs = get_remote_state (); | |
12998 | char *reply; | |
12999 | ||
e886a173 PA |
13000 | /* If we're not debugging a process yet, the IPA can't be |
13001 | loaded. */ | |
13002 | if (!target_has_execution) | |
13003 | return 0; | |
13004 | ||
13005 | /* Make sure the remote is pointing at the right process. */ | |
13006 | set_general_process (); | |
13007 | ||
bba74b36 | 13008 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
13009 | putpkt (rs->buf); |
13010 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
13011 | if (*reply == '\0') | |
13012 | return -1; | |
13013 | else | |
13014 | { | |
13015 | ULONGEST min_insn_len; | |
13016 | ||
13017 | unpack_varlen_hex (reply, &min_insn_len); | |
13018 | ||
13019 | return (int) min_insn_len; | |
13020 | } | |
13021 | } | |
13022 | ||
f6f899bf | 13023 | static void |
4da384be | 13024 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 13025 | { |
4082afcc | 13026 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13027 | { |
13028 | struct remote_state *rs = get_remote_state (); | |
13029 | char *buf = rs->buf; | |
13030 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13031 | enum packet_result result; | |
13032 | ||
13033 | gdb_assert (val >= 0 || val == -1); | |
13034 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13035 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13036 | if (val < 0) | |
13037 | { | |
13038 | *buf++ = '-'; | |
13039 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13040 | } | |
13041 | else | |
13042 | buf += hexnumstr (buf, (ULONGEST) val); | |
13043 | ||
13044 | putpkt (rs->buf); | |
13045 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
13046 | result = packet_ok (rs->buf, | |
13047 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13048 | ||
13049 | if (result != PACKET_OK) | |
13050 | warning (_("Bogus reply from target: %s"), rs->buf); | |
13051 | } | |
13052 | } | |
13053 | ||
f196051f | 13054 | static int |
d9e68a2c TT |
13055 | remote_set_trace_notes (struct target_ops *self, |
13056 | const char *user, const char *notes, | |
ca623f82 | 13057 | const char *stop_notes) |
f196051f SS |
13058 | { |
13059 | struct remote_state *rs = get_remote_state (); | |
13060 | char *reply; | |
13061 | char *buf = rs->buf; | |
13062 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13063 | int nbytes; | |
13064 | ||
13065 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13066 | if (user) | |
13067 | { | |
13068 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13069 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13070 | buf += 2 * nbytes; |
13071 | *buf++ = ';'; | |
13072 | } | |
13073 | if (notes) | |
13074 | { | |
13075 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13076 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13077 | buf += 2 * nbytes; |
13078 | *buf++ = ';'; | |
13079 | } | |
13080 | if (stop_notes) | |
13081 | { | |
13082 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13083 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13084 | buf += 2 * nbytes; |
13085 | *buf++ = ';'; | |
13086 | } | |
13087 | /* Ensure the buffer is terminated. */ | |
13088 | *buf = '\0'; | |
13089 | ||
13090 | putpkt (rs->buf); | |
13091 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
13092 | if (*reply == '\0') | |
13093 | return 0; | |
13094 | ||
13095 | if (strcmp (reply, "OK") != 0) | |
13096 | error (_("Bogus reply from target: %s"), reply); | |
13097 | ||
13098 | return 1; | |
13099 | } | |
13100 | ||
d1feda86 | 13101 | static int |
2c152180 | 13102 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 13103 | { |
4082afcc | 13104 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13105 | { |
13106 | struct remote_state *rs = get_remote_state (); | |
13107 | ||
13108 | /* If the stub supports QAgent. */ | |
bba74b36 | 13109 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
13110 | putpkt (rs->buf); |
13111 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13112 | ||
13113 | if (strcmp (rs->buf, "OK") == 0) | |
13114 | { | |
13115 | use_agent = use; | |
13116 | return 1; | |
13117 | } | |
13118 | } | |
13119 | ||
13120 | return 0; | |
13121 | } | |
13122 | ||
13123 | static int | |
fe38f897 | 13124 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 13125 | { |
4082afcc | 13126 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13127 | } |
13128 | ||
9accd112 MM |
13129 | struct btrace_target_info |
13130 | { | |
13131 | /* The ptid of the traced thread. */ | |
13132 | ptid_t ptid; | |
f4abbc16 MM |
13133 | |
13134 | /* The obtained branch trace configuration. */ | |
13135 | struct btrace_config conf; | |
9accd112 MM |
13136 | }; |
13137 | ||
f4abbc16 MM |
13138 | /* Reset our idea of our target's btrace configuration. */ |
13139 | ||
13140 | static void | |
13141 | remote_btrace_reset (void) | |
13142 | { | |
13143 | struct remote_state *rs = get_remote_state (); | |
13144 | ||
13145 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
13146 | } | |
13147 | ||
9accd112 MM |
13148 | /* Check whether the target supports branch tracing. */ |
13149 | ||
13150 | static int | |
043c3577 | 13151 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 13152 | { |
4082afcc | 13153 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 13154 | return 0; |
4082afcc | 13155 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
13156 | return 0; |
13157 | ||
043c3577 MM |
13158 | switch (format) |
13159 | { | |
13160 | case BTRACE_FORMAT_NONE: | |
13161 | return 0; | |
13162 | ||
13163 | case BTRACE_FORMAT_BTS: | |
13164 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
13165 | |
13166 | case BTRACE_FORMAT_PT: | |
13167 | /* The trace is decoded on the host. Even if our target supports it, | |
13168 | we still need to have libipt to decode the trace. */ | |
13169 | #if defined (HAVE_LIBIPT) | |
13170 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
13171 | #else /* !defined (HAVE_LIBIPT) */ | |
13172 | return 0; | |
13173 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
13174 | } |
13175 | ||
13176 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
13177 | } |
13178 | ||
f4abbc16 MM |
13179 | /* Synchronize the configuration with the target. */ |
13180 | ||
13181 | static void | |
13182 | btrace_sync_conf (const struct btrace_config *conf) | |
13183 | { | |
d33501a5 MM |
13184 | struct packet_config *packet; |
13185 | struct remote_state *rs; | |
13186 | char *buf, *pos, *endbuf; | |
13187 | ||
13188 | rs = get_remote_state (); | |
13189 | buf = rs->buf; | |
13190 | endbuf = buf + get_remote_packet_size (); | |
13191 | ||
13192 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13193 | if (packet_config_support (packet) == PACKET_ENABLE | |
13194 | && conf->bts.size != rs->btrace_config.bts.size) | |
13195 | { | |
13196 | pos = buf; | |
13197 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13198 | conf->bts.size); | |
13199 | ||
13200 | putpkt (buf); | |
13201 | getpkt (&buf, &rs->buf_size, 0); | |
13202 | ||
13203 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13204 | { | |
13205 | if (buf[0] == 'E' && buf[1] == '.') | |
13206 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13207 | else | |
13208 | error (_("Failed to configure the BTS buffer size.")); | |
13209 | } | |
13210 | ||
13211 | rs->btrace_config.bts.size = conf->bts.size; | |
13212 | } | |
b20a6524 MM |
13213 | |
13214 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13215 | if (packet_config_support (packet) == PACKET_ENABLE | |
13216 | && conf->pt.size != rs->btrace_config.pt.size) | |
13217 | { | |
13218 | pos = buf; | |
13219 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13220 | conf->pt.size); | |
13221 | ||
13222 | putpkt (buf); | |
13223 | getpkt (&buf, &rs->buf_size, 0); | |
13224 | ||
13225 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13226 | { | |
13227 | if (buf[0] == 'E' && buf[1] == '.') | |
13228 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13229 | else | |
13230 | error (_("Failed to configure the trace buffer size.")); | |
13231 | } | |
13232 | ||
13233 | rs->btrace_config.pt.size = conf->pt.size; | |
13234 | } | |
f4abbc16 MM |
13235 | } |
13236 | ||
13237 | /* Read the current thread's btrace configuration from the target and | |
13238 | store it into CONF. */ | |
13239 | ||
13240 | static void | |
13241 | btrace_read_config (struct btrace_config *conf) | |
13242 | { | |
13243 | char *xml; | |
13244 | ||
13245 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 13246 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
13247 | if (xml != NULL) |
13248 | { | |
13249 | struct cleanup *cleanup; | |
13250 | ||
13251 | cleanup = make_cleanup (xfree, xml); | |
13252 | parse_xml_btrace_conf (conf, xml); | |
13253 | do_cleanups (cleanup); | |
13254 | } | |
13255 | } | |
13256 | ||
c0272db5 TW |
13257 | /* Maybe reopen target btrace. */ |
13258 | ||
13259 | static void | |
13260 | remote_btrace_maybe_reopen (void) | |
13261 | { | |
13262 | struct remote_state *rs = get_remote_state (); | |
c0272db5 TW |
13263 | struct thread_info *tp; |
13264 | int btrace_target_pushed = 0; | |
13265 | int warned = 0; | |
13266 | ||
5ed8105e PA |
13267 | scoped_restore_current_thread restore_thread; |
13268 | ||
c0272db5 TW |
13269 | ALL_NON_EXITED_THREADS (tp) |
13270 | { | |
13271 | set_general_thread (tp->ptid); | |
13272 | ||
13273 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13274 | btrace_read_config (&rs->btrace_config); | |
13275 | ||
13276 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13277 | continue; | |
13278 | ||
13279 | #if !defined (HAVE_LIBIPT) | |
13280 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13281 | { | |
13282 | if (!warned) | |
13283 | { | |
13284 | warned = 1; | |
13285 | warning (_("GDB does not support Intel Processor Trace. " | |
13286 | "\"record\" will not work in this session.")); | |
13287 | } | |
13288 | ||
13289 | continue; | |
13290 | } | |
13291 | #endif /* !defined (HAVE_LIBIPT) */ | |
13292 | ||
13293 | /* Push target, once, but before anything else happens. This way our | |
13294 | changes to the threads will be cleaned up by unpushing the target | |
13295 | in case btrace_read_config () throws. */ | |
13296 | if (!btrace_target_pushed) | |
13297 | { | |
13298 | btrace_target_pushed = 1; | |
13299 | record_btrace_push_target (); | |
13300 | printf_filtered (_("Target is recording using %s.\n"), | |
13301 | btrace_format_string (rs->btrace_config.format)); | |
13302 | } | |
13303 | ||
13304 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13305 | tp->btrace.target->ptid = tp->ptid; | |
13306 | tp->btrace.target->conf = rs->btrace_config; | |
13307 | } | |
c0272db5 TW |
13308 | } |
13309 | ||
9accd112 MM |
13310 | /* Enable branch tracing. */ |
13311 | ||
13312 | static struct btrace_target_info * | |
f4abbc16 MM |
13313 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
13314 | const struct btrace_config *conf) | |
9accd112 MM |
13315 | { |
13316 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13317 | struct packet_config *packet = NULL; |
9accd112 MM |
13318 | struct remote_state *rs = get_remote_state (); |
13319 | char *buf = rs->buf; | |
13320 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13321 | ||
b20a6524 MM |
13322 | switch (conf->format) |
13323 | { | |
13324 | case BTRACE_FORMAT_BTS: | |
13325 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13326 | break; | |
13327 | ||
13328 | case BTRACE_FORMAT_PT: | |
13329 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13330 | break; | |
13331 | } | |
13332 | ||
13333 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13334 | error (_("Target does not support branch tracing.")); |
13335 | ||
f4abbc16 MM |
13336 | btrace_sync_conf (conf); |
13337 | ||
9accd112 MM |
13338 | set_general_thread (ptid); |
13339 | ||
13340 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13341 | putpkt (rs->buf); | |
13342 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13343 | ||
13344 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13345 | { | |
13346 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13347 | error (_("Could not enable branch tracing for %s: %s"), | |
13348 | target_pid_to_str (ptid), rs->buf + 2); | |
13349 | else | |
13350 | error (_("Could not enable branch tracing for %s."), | |
13351 | target_pid_to_str (ptid)); | |
13352 | } | |
13353 | ||
8d749320 | 13354 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13355 | tinfo->ptid = ptid; |
13356 | ||
f4abbc16 MM |
13357 | /* If we fail to read the configuration, we lose some information, but the |
13358 | tracing itself is not impacted. */ | |
492d29ea PA |
13359 | TRY |
13360 | { | |
13361 | btrace_read_config (&tinfo->conf); | |
13362 | } | |
13363 | CATCH (err, RETURN_MASK_ERROR) | |
13364 | { | |
13365 | if (err.message != NULL) | |
13366 | warning ("%s", err.message); | |
13367 | } | |
13368 | END_CATCH | |
f4abbc16 | 13369 | |
9accd112 MM |
13370 | return tinfo; |
13371 | } | |
13372 | ||
13373 | /* Disable branch tracing. */ | |
13374 | ||
13375 | static void | |
25e95349 TT |
13376 | remote_disable_btrace (struct target_ops *self, |
13377 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13378 | { |
13379 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13380 | struct remote_state *rs = get_remote_state (); | |
13381 | char *buf = rs->buf; | |
13382 | char *endbuf = rs->buf + get_remote_packet_size (); | |
13383 | ||
4082afcc | 13384 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13385 | error (_("Target does not support branch tracing.")); |
13386 | ||
13387 | set_general_thread (tinfo->ptid); | |
13388 | ||
13389 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13390 | putpkt (rs->buf); | |
13391 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13392 | ||
13393 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13394 | { | |
13395 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13396 | error (_("Could not disable branch tracing for %s: %s"), | |
13397 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
13398 | else | |
13399 | error (_("Could not disable branch tracing for %s."), | |
13400 | target_pid_to_str (tinfo->ptid)); | |
13401 | } | |
13402 | ||
13403 | xfree (tinfo); | |
13404 | } | |
13405 | ||
13406 | /* Teardown branch tracing. */ | |
13407 | ||
13408 | static void | |
1777056d TT |
13409 | remote_teardown_btrace (struct target_ops *self, |
13410 | struct btrace_target_info *tinfo) | |
9accd112 MM |
13411 | { |
13412 | /* We must not talk to the target during teardown. */ | |
13413 | xfree (tinfo); | |
13414 | } | |
13415 | ||
13416 | /* Read the branch trace. */ | |
13417 | ||
969c39fb | 13418 | static enum btrace_error |
39c49f83 | 13419 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 13420 | struct btrace_data *btrace, |
969c39fb | 13421 | struct btrace_target_info *tinfo, |
9accd112 MM |
13422 | enum btrace_read_type type) |
13423 | { | |
13424 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
969c39fb | 13425 | struct cleanup *cleanup; |
9accd112 MM |
13426 | const char *annex; |
13427 | char *xml; | |
13428 | ||
4082afcc | 13429 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13430 | error (_("Target does not support branch tracing.")); |
13431 | ||
13432 | #if !defined(HAVE_LIBEXPAT) | |
13433 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13434 | #endif | |
13435 | ||
13436 | switch (type) | |
13437 | { | |
864089d2 | 13438 | case BTRACE_READ_ALL: |
9accd112 MM |
13439 | annex = "all"; |
13440 | break; | |
864089d2 | 13441 | case BTRACE_READ_NEW: |
9accd112 MM |
13442 | annex = "new"; |
13443 | break; | |
969c39fb MM |
13444 | case BTRACE_READ_DELTA: |
13445 | annex = "delta"; | |
13446 | break; | |
9accd112 MM |
13447 | default: |
13448 | internal_error (__FILE__, __LINE__, | |
13449 | _("Bad branch tracing read type: %u."), | |
13450 | (unsigned int) type); | |
13451 | } | |
13452 | ||
13453 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 13454 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
13455 | if (xml == NULL) |
13456 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 13457 | |
969c39fb | 13458 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 13459 | parse_xml_btrace (btrace, xml); |
969c39fb | 13460 | do_cleanups (cleanup); |
9accd112 | 13461 | |
969c39fb | 13462 | return BTRACE_ERR_NONE; |
9accd112 MM |
13463 | } |
13464 | ||
f4abbc16 MM |
13465 | static const struct btrace_config * |
13466 | remote_btrace_conf (struct target_ops *self, | |
13467 | const struct btrace_target_info *tinfo) | |
13468 | { | |
13469 | return &tinfo->conf; | |
13470 | } | |
13471 | ||
ced63ec0 | 13472 | static int |
5436ff03 | 13473 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 13474 | { |
4082afcc PA |
13475 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13476 | == PACKET_ENABLE); | |
ced63ec0 GB |
13477 | } |
13478 | ||
9dd130a0 TT |
13479 | /* Implementation of to_load. */ |
13480 | ||
13481 | static void | |
9cbe5fff | 13482 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
13483 | { |
13484 | generic_load (name, from_tty); | |
13485 | } | |
13486 | ||
c78fa86a GB |
13487 | /* Accepts an integer PID; returns a string representing a file that |
13488 | can be opened on the remote side to get the symbols for the child | |
13489 | process. Returns NULL if the operation is not supported. */ | |
13490 | ||
13491 | static char * | |
13492 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
13493 | { | |
13494 | static char *filename = NULL; | |
835205d0 GB |
13495 | struct inferior *inf; |
13496 | char *annex = NULL; | |
c78fa86a GB |
13497 | |
13498 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13499 | return NULL; | |
13500 | ||
13501 | if (filename != NULL) | |
13502 | xfree (filename); | |
13503 | ||
835205d0 GB |
13504 | inf = find_inferior_pid (pid); |
13505 | if (inf == NULL) | |
13506 | internal_error (__FILE__, __LINE__, | |
13507 | _("not currently attached to process %d"), pid); | |
13508 | ||
13509 | if (!inf->fake_pid_p) | |
13510 | { | |
13511 | const int annex_size = 9; | |
13512 | ||
224c3ddb | 13513 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13514 | xsnprintf (annex, annex_size, "%x", pid); |
13515 | } | |
13516 | ||
c78fa86a GB |
13517 | filename = target_read_stralloc (¤t_target, |
13518 | TARGET_OBJECT_EXEC_FILE, annex); | |
13519 | ||
13520 | return filename; | |
13521 | } | |
13522 | ||
750ce8d1 YQ |
13523 | /* Implement the to_can_do_single_step target_ops method. */ |
13524 | ||
13525 | static int | |
13526 | remote_can_do_single_step (struct target_ops *ops) | |
13527 | { | |
13528 | /* We can only tell whether target supports single step or not by | |
13529 | supported s and S vCont actions if the stub supports vContSupported | |
13530 | feature. If the stub doesn't support vContSupported feature, | |
13531 | we have conservatively to think target doesn't supports single | |
13532 | step. */ | |
13533 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13534 | { | |
13535 | struct remote_state *rs = get_remote_state (); | |
13536 | ||
13537 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13538 | remote_vcont_probe (rs); | |
13539 | ||
13540 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13541 | } | |
13542 | else | |
13543 | return 0; | |
13544 | } | |
13545 | ||
3a00c802 PA |
13546 | /* Implementation of the to_execution_direction method for the remote |
13547 | target. */ | |
13548 | ||
13549 | static enum exec_direction_kind | |
13550 | remote_execution_direction (struct target_ops *self) | |
13551 | { | |
13552 | struct remote_state *rs = get_remote_state (); | |
13553 | ||
13554 | return rs->last_resume_exec_dir; | |
13555 | } | |
13556 | ||
f6327dcb KB |
13557 | /* Return pointer to the thread_info struct which corresponds to |
13558 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13559 | ||
13560 | static struct thread_info * | |
13561 | remote_thread_handle_to_thread_info (struct target_ops *ops, | |
13562 | const gdb_byte *thread_handle, | |
13563 | int handle_len, | |
13564 | struct inferior *inf) | |
13565 | { | |
13566 | struct thread_info *tp; | |
13567 | ||
13568 | ALL_NON_EXITED_THREADS (tp) | |
13569 | { | |
13570 | struct private_thread_info *priv = get_private_info_thread (tp); | |
13571 | ||
13572 | if (tp->inf == inf && priv != NULL) | |
13573 | { | |
13574 | if (handle_len != priv->thread_handle->size ()) | |
13575 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), | |
13576 | handle_len, priv->thread_handle->size ()); | |
13577 | if (memcmp (thread_handle, priv->thread_handle->data (), | |
13578 | handle_len) == 0) | |
13579 | return tp; | |
13580 | } | |
13581 | } | |
13582 | ||
13583 | return NULL; | |
13584 | } | |
13585 | ||
c906108c | 13586 | static void |
fba45db2 | 13587 | init_remote_ops (void) |
c906108c | 13588 | { |
c5aa993b | 13589 | remote_ops.to_shortname = "remote"; |
c906108c | 13590 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13591 | remote_ops.to_doc = |
c906108c | 13592 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13593 | Specify the serial device it is connected to\n\ |
13594 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13595 | remote_ops.to_open = remote_open; |
13596 | remote_ops.to_close = remote_close; | |
c906108c | 13597 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13598 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13599 | remote_ops.to_resume = remote_resume; |
85ad3aaf | 13600 | remote_ops.to_commit_resume = remote_commit_resume; |
c906108c SS |
13601 | remote_ops.to_wait = remote_wait; |
13602 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13603 | remote_ops.to_store_registers = remote_store_registers; | |
13604 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13605 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13606 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13607 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13608 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13609 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13610 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13611 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13612 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13613 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13614 | remote_ops.to_watchpoint_addr_within_range = |
13615 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13616 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13617 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13618 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13619 | remote_ops.to_region_ok_for_hw_watchpoint |
13620 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13621 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13622 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13623 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13624 | remote_ops.to_load = remote_load; |
c906108c | 13625 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13626 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13627 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13628 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13629 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13630 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13631 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13632 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13633 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13634 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13635 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13636 | remote_ops.to_interrupt = remote_interrupt; |
93692b58 | 13637 | remote_ops.to_pass_ctrlc = remote_pass_ctrlc; |
4b8a223f | 13638 | remote_ops.to_xfer_partial = remote_xfer_partial; |
09c98b44 | 13639 | remote_ops.to_get_memory_xfer_limit = remote_get_memory_xfer_limit; |
96baa820 | 13640 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13641 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13642 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13643 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13644 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13645 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13646 | remote_ops.to_has_memory = default_child_has_memory; | |
13647 | remote_ops.to_has_stack = default_child_has_stack; | |
13648 | remote_ops.to_has_registers = default_child_has_registers; | |
13649 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13650 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13651 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13652 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13653 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13654 | remote_ops.to_flash_erase = remote_flash_erase; |
13655 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13656 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13657 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13658 | remote_ops.to_can_async_p = remote_can_async_p; |
13659 | remote_ops.to_is_async_p = remote_is_async_p; | |
13660 | remote_ops.to_async = remote_async; | |
65706a29 | 13661 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13662 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13663 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13664 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13665 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13666 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13667 | remote_ops.to_supports_disable_randomization |
13668 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13669 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13670 | remote_ops.to_fileio_open = remote_hostio_open; |
13671 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13672 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13673 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13674 | remote_ops.to_fileio_close = remote_hostio_close; |
13675 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13676 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13677 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13678 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13679 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13680 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13681 | remote_ops.to_trace_init = remote_trace_init; |
13682 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13683 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13684 | remote_ops.to_download_trace_state_variable |
13685 | = remote_download_trace_state_variable; | |
d248b706 KY |
13686 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13687 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13688 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13689 | remote_ops.to_trace_start = remote_trace_start; | |
13690 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13691 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13692 | remote_ops.to_trace_stop = remote_trace_stop; |
13693 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13694 | remote_ops.to_get_trace_state_variable_value |
13695 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13696 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13697 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13698 | remote_ops.to_upload_trace_state_variables |
13699 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13700 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13701 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13702 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13703 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13704 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13705 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13706 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13707 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13708 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13709 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13710 | remote_ops.to_static_tracepoint_marker_at |
13711 | = remote_static_tracepoint_marker_at; | |
13712 | remote_ops.to_static_tracepoint_markers_by_strid | |
13713 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13714 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13715 | remote_ops.to_use_agent = remote_use_agent; |
13716 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13717 | remote_ops.to_supports_btrace = remote_supports_btrace; |
13718 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
13719 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13720 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13721 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13722 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13723 | remote_ops.to_augmented_libraries_svr4_read = |
13724 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13725 | remote_ops.to_follow_fork = remote_follow_fork; |
13726 | remote_ops.to_follow_exec = remote_follow_exec; | |
13727 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13728 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13729 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13730 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13731 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13732 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
3a00c802 | 13733 | remote_ops.to_execution_direction = remote_execution_direction; |
f6327dcb KB |
13734 | remote_ops.to_thread_handle_to_thread_info = |
13735 | remote_thread_handle_to_thread_info; | |
c906108c SS |
13736 | } |
13737 | ||
13738 | /* Set up the extended remote vector by making a copy of the standard | |
13739 | remote vector and adding to it. */ | |
13740 | ||
13741 | static void | |
fba45db2 | 13742 | init_extended_remote_ops (void) |
c906108c SS |
13743 | { |
13744 | extended_remote_ops = remote_ops; | |
13745 | ||
0f71a2f6 | 13746 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13747 | extended_remote_ops.to_longname = |
c906108c | 13748 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13749 | extended_remote_ops.to_doc = |
c906108c | 13750 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13751 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13752 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13753 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13754 | extended_remote_ops.to_detach = extended_remote_detach; |
13755 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13756 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13757 | extended_remote_ops.to_supports_disable_randomization |
13758 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13759 | } |
13760 | ||
6426a772 | 13761 | static int |
6a109b6b | 13762 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13763 | { |
5d93a237 TT |
13764 | struct remote_state *rs = get_remote_state (); |
13765 | ||
3015c064 SM |
13766 | /* We don't go async if the user has explicitly prevented it with the |
13767 | "maint set target-async" command. */ | |
c6ebd6cf | 13768 | if (!target_async_permitted) |
75c99385 PA |
13769 | return 0; |
13770 | ||
23860348 | 13771 | /* We're async whenever the serial device is. */ |
5d93a237 | 13772 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13773 | } |
13774 | ||
13775 | static int | |
6a109b6b | 13776 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13777 | { |
5d93a237 TT |
13778 | struct remote_state *rs = get_remote_state (); |
13779 | ||
c6ebd6cf | 13780 | if (!target_async_permitted) |
75c99385 PA |
13781 | /* We only enable async when the user specifically asks for it. */ |
13782 | return 0; | |
13783 | ||
23860348 | 13784 | /* We're async whenever the serial device is. */ |
5d93a237 | 13785 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13786 | } |
13787 | ||
2acceee2 JM |
13788 | /* Pass the SERIAL event on and up to the client. One day this code |
13789 | will be able to delay notifying the client of an event until the | |
23860348 | 13790 | point where an entire packet has been received. */ |
2acceee2 | 13791 | |
2acceee2 JM |
13792 | static serial_event_ftype remote_async_serial_handler; |
13793 | ||
6426a772 | 13794 | static void |
819cc324 | 13795 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13796 | { |
2acceee2 JM |
13797 | /* Don't propogate error information up to the client. Instead let |
13798 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13799 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13800 | } |
13801 | ||
74531fed PA |
13802 | static void |
13803 | remote_async_inferior_event_handler (gdb_client_data data) | |
13804 | { | |
13805 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13806 | } | |
13807 | ||
2acceee2 | 13808 | static void |
6a3753b3 | 13809 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13810 | { |
5d93a237 TT |
13811 | struct remote_state *rs = get_remote_state (); |
13812 | ||
6a3753b3 | 13813 | if (enable) |
2acceee2 | 13814 | { |
88b496c3 | 13815 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13816 | |
13817 | /* If there are pending events in the stop reply queue tell the | |
13818 | event loop to process them. */ | |
13819 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13820 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13821 | /* For simplicity, below we clear the pending events token |
13822 | without remembering whether it is marked, so here we always | |
13823 | mark it. If there's actually no pending notification to | |
13824 | process, this ends up being a no-op (other than a spurious | |
13825 | event-loop wakeup). */ | |
13826 | if (target_is_non_stop_p ()) | |
13827 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13828 | } |
13829 | else | |
b7d2e916 PA |
13830 | { |
13831 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13832 | /* If the core is disabling async, it doesn't want to be |
13833 | disturbed with target events. Clear all async event sources | |
13834 | too. */ | |
b7d2e916 | 13835 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13836 | if (target_is_non_stop_p ()) |
13837 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13838 | } |
6426a772 JM |
13839 | } |
13840 | ||
65706a29 PA |
13841 | /* Implementation of the to_thread_events method. */ |
13842 | ||
13843 | static void | |
13844 | remote_thread_events (struct target_ops *ops, int enable) | |
13845 | { | |
13846 | struct remote_state *rs = get_remote_state (); | |
13847 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13848 | |
13849 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13850 | return; | |
13851 | ||
13852 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13853 | putpkt (rs->buf); | |
13854 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13855 | ||
13856 | switch (packet_ok (rs->buf, | |
13857 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13858 | { | |
13859 | case PACKET_OK: | |
13860 | if (strcmp (rs->buf, "OK") != 0) | |
13861 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13862 | break; | |
13863 | case PACKET_ERROR: | |
13864 | warning (_("Remote failure reply: %s"), rs->buf); | |
13865 | break; | |
13866 | case PACKET_UNKNOWN: | |
13867 | break; | |
13868 | } | |
13869 | } | |
13870 | ||
5a2468f5 | 13871 | static void |
c2d11a7d | 13872 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 13873 | { |
635c7e8a | 13874 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13875 | } |
13876 | ||
d471ea57 AC |
13877 | static void |
13878 | show_remote_cmd (char *args, int from_tty) | |
13879 | { | |
37a105a1 | 13880 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13881 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 13882 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 13883 | struct ui_out *uiout = current_uiout; |
37a105a1 | 13884 | |
2e783024 | 13885 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
13886 | for (; list != NULL; list = list->next) |
13887 | if (strcmp (list->name, "Z-packet") == 0) | |
13888 | continue; | |
427c3a89 DJ |
13889 | else if (list->type == not_set_cmd) |
13890 | /* Alias commands are exactly like the original, except they | |
13891 | don't have the normal type. */ | |
13892 | continue; | |
13893 | else | |
37a105a1 | 13894 | { |
2e783024 | 13895 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 13896 | |
112e8700 SM |
13897 | uiout->field_string ("name", list->name); |
13898 | uiout->text (": "); | |
427c3a89 | 13899 | if (list->type == show_cmd) |
f5c4fcd9 | 13900 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
13901 | else |
13902 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 13903 | } |
d471ea57 | 13904 | } |
5a2468f5 | 13905 | |
0f71a2f6 | 13906 | |
23860348 | 13907 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13908 | static void |
13909 | remote_new_objfile (struct objfile *objfile) | |
13910 | { | |
5d93a237 TT |
13911 | struct remote_state *rs = get_remote_state (); |
13912 | ||
13913 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13914 | remote_check_symbols (); |
dc8acb97 MS |
13915 | } |
13916 | ||
00bf0b85 SS |
13917 | /* Pull all the tracepoints defined on the target and create local |
13918 | data structures representing them. We don't want to create real | |
13919 | tracepoints yet, we don't want to mess up the user's existing | |
13920 | collection. */ | |
13921 | ||
13922 | static int | |
ab6617cc | 13923 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13924 | { |
00bf0b85 SS |
13925 | struct remote_state *rs = get_remote_state (); |
13926 | char *p; | |
d5551862 | 13927 | |
00bf0b85 SS |
13928 | /* Ask for a first packet of tracepoint definition. */ |
13929 | putpkt ("qTfP"); | |
13930 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13931 | p = rs->buf; | |
13932 | while (*p && *p != 'l') | |
d5551862 | 13933 | { |
00bf0b85 SS |
13934 | parse_tracepoint_definition (p, utpp); |
13935 | /* Ask for another packet of tracepoint definition. */ | |
13936 | putpkt ("qTsP"); | |
13937 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13938 | p = rs->buf; | |
d5551862 | 13939 | } |
00bf0b85 | 13940 | return 0; |
d5551862 SS |
13941 | } |
13942 | ||
00bf0b85 | 13943 | static int |
181e3713 TT |
13944 | remote_upload_trace_state_variables (struct target_ops *self, |
13945 | struct uploaded_tsv **utsvp) | |
d5551862 | 13946 | { |
00bf0b85 | 13947 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13948 | char *p; |
d5551862 | 13949 | |
00bf0b85 SS |
13950 | /* Ask for a first packet of variable definition. */ |
13951 | putpkt ("qTfV"); | |
d5551862 SS |
13952 | getpkt (&rs->buf, &rs->buf_size, 0); |
13953 | p = rs->buf; | |
00bf0b85 | 13954 | while (*p && *p != 'l') |
d5551862 | 13955 | { |
00bf0b85 SS |
13956 | parse_tsv_definition (p, utsvp); |
13957 | /* Ask for another packet of variable definition. */ | |
13958 | putpkt ("qTsV"); | |
d5551862 SS |
13959 | getpkt (&rs->buf, &rs->buf_size, 0); |
13960 | p = rs->buf; | |
13961 | } | |
00bf0b85 | 13962 | return 0; |
d5551862 SS |
13963 | } |
13964 | ||
c1e36e3e PA |
13965 | /* The "set/show range-stepping" show hook. */ |
13966 | ||
13967 | static void | |
13968 | show_range_stepping (struct ui_file *file, int from_tty, | |
13969 | struct cmd_list_element *c, | |
13970 | const char *value) | |
13971 | { | |
13972 | fprintf_filtered (file, | |
13973 | _("Debugger's willingness to use range stepping " | |
13974 | "is %s.\n"), value); | |
13975 | } | |
13976 | ||
13977 | /* The "set/show range-stepping" set hook. */ | |
13978 | ||
13979 | static void | |
13980 | set_range_stepping (char *ignore_args, int from_tty, | |
13981 | struct cmd_list_element *c) | |
13982 | { | |
5d93a237 TT |
13983 | struct remote_state *rs = get_remote_state (); |
13984 | ||
c1e36e3e PA |
13985 | /* Whene enabling, check whether range stepping is actually |
13986 | supported by the target, and warn if not. */ | |
13987 | if (use_range_stepping) | |
13988 | { | |
5d93a237 | 13989 | if (rs->remote_desc != NULL) |
c1e36e3e | 13990 | { |
4082afcc | 13991 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13992 | remote_vcont_probe (rs); |
13993 | ||
4082afcc | 13994 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13995 | && rs->supports_vCont.r) |
13996 | return; | |
13997 | } | |
13998 | ||
13999 | warning (_("Range stepping is not supported by the current target")); | |
14000 | } | |
14001 | } | |
14002 | ||
c906108c | 14003 | void |
fba45db2 | 14004 | _initialize_remote (void) |
c906108c | 14005 | { |
9a7071a8 | 14006 | struct cmd_list_element *cmd; |
6f937416 | 14007 | const char *cmd_name; |
ea9c271d | 14008 | |
0f71a2f6 | 14009 | /* architecture specific data */ |
2bc416ba | 14010 | remote_gdbarch_data_handle = |
23860348 | 14011 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
14012 | remote_g_packet_data_handle = |
14013 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14014 | |
94585166 DB |
14015 | remote_pspace_data |
14016 | = register_program_space_data_with_cleanup (NULL, | |
14017 | remote_pspace_data_cleanup); | |
14018 | ||
ea9c271d DJ |
14019 | /* Initialize the per-target state. At the moment there is only one |
14020 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
14021 | time. */ |
14022 | remote_state = new_remote_state (); | |
ea9c271d | 14023 | |
c906108c SS |
14024 | init_remote_ops (); |
14025 | add_target (&remote_ops); | |
14026 | ||
14027 | init_extended_remote_ops (); | |
14028 | add_target (&extended_remote_ops); | |
cce74817 | 14029 | |
dc8acb97 | 14030 | /* Hook into new objfile notification. */ |
06d3b283 | 14031 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
14032 | /* We're no longer interested in notification events of an inferior |
14033 | when it exits. */ | |
14034 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 14035 | |
c906108c SS |
14036 | #if 0 |
14037 | init_remote_threadtests (); | |
14038 | #endif | |
14039 | ||
722247f1 | 14040 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 14041 | /* set/show remote ... */ |
d471ea57 | 14042 | |
1bedd215 | 14043 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
14044 | Remote protocol specific variables\n\ |
14045 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14046 | the packets being used"), |
cff3e48b | 14047 | &remote_set_cmdlist, "set remote ", |
23860348 | 14048 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14049 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
14050 | Remote protocol specific variables\n\ |
14051 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 14052 | the packets being used"), |
cff3e48b | 14053 | &remote_show_cmdlist, "show remote ", |
23860348 | 14054 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14055 | |
1a966eab AC |
14056 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14057 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14058 | Argument is a single section name (default: all loaded sections).\n\ |
14059 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14060 | &cmdlist); |
14061 | ||
1a966eab AC |
14062 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14063 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14064 | maintenance packet TEXT\n\ |
14065 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14066 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14067 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14068 | terminating `#' character and checksum."), |
c906108c SS |
14069 | &maintenancelist); |
14070 | ||
7915a72c AC |
14071 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14072 | Set whether to send break if interrupted."), _("\ | |
14073 | Show whether to send break if interrupted."), _("\ | |
14074 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14075 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14076 | &setlist, &showlist); |
9a7071a8 JB |
14077 | cmd_name = "remotebreak"; |
14078 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14079 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14080 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14081 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14082 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14083 | ||
14084 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14085 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14086 | _("\ | |
9a7071a8 JB |
14087 | Set interrupt sequence to remote target."), _("\ |
14088 | Show interrupt sequence to remote target."), _("\ | |
14089 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14090 | NULL, show_interrupt_sequence, | |
14091 | &remote_set_cmdlist, | |
14092 | &remote_show_cmdlist); | |
14093 | ||
14094 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14095 | &interrupt_on_connect, _("\ | |
14096 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14097 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
14098 | If set, interrupt sequence is sent to remote target."), | |
14099 | NULL, NULL, | |
14100 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14101 | |
23860348 | 14102 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14103 | |
1a966eab AC |
14104 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14105 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14106 | &setlist); |
1a966eab AC |
14107 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14108 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14109 | &showlist); |
14110 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14111 | set_memory_write_packet_size, _("\ |
14112 | Set the maximum number of bytes per memory-write packet.\n\ | |
14113 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14114 | default packet size. The actual limit is further reduced\n\ | |
14115 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14116 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14117 | &remote_set_cmdlist); |
14118 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14119 | set_memory_read_packet_size, _("\ |
14120 | Set the maximum number of bytes per memory-read packet.\n\ | |
14121 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14122 | default packet size. The actual limit is further reduced\n\ | |
14123 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14124 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14125 | &remote_set_cmdlist); |
14126 | add_cmd ("memory-write-packet-size", no_class, | |
14127 | show_memory_write_packet_size, | |
1a966eab | 14128 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14129 | &remote_show_cmdlist); |
14130 | add_cmd ("memory-read-packet-size", no_class, | |
14131 | show_memory_read_packet_size, | |
1a966eab | 14132 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14133 | &remote_show_cmdlist); |
c906108c | 14134 | |
b3f42336 | 14135 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14136 | &remote_hw_watchpoint_limit, _("\ |
14137 | Set the maximum number of target hardware watchpoints."), _("\ | |
14138 | Show the maximum number of target hardware watchpoints."), _("\ | |
14139 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14140 | NULL, NULL, /* FIXME: i18n: The maximum |
14141 | number of target hardware | |
14142 | watchpoints is %s. */ | |
b3f42336 | 14143 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
14144 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
14145 | &remote_hw_watchpoint_length_limit, _("\ | |
14146 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14147 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14148 | Specify a negative limit for unlimited."), | |
14149 | NULL, NULL, /* FIXME: i18n: The maximum | |
14150 | length (in bytes) of a target | |
14151 | hardware watchpoint is %s. */ | |
14152 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 14153 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14154 | &remote_hw_breakpoint_limit, _("\ |
14155 | Set the maximum number of target hardware breakpoints."), _("\ | |
14156 | Show the maximum number of target hardware breakpoints."), _("\ | |
14157 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
14158 | NULL, NULL, /* FIXME: i18n: The maximum |
14159 | number of target hardware | |
14160 | breakpoints is %s. */ | |
b3f42336 | 14161 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14162 | |
1b493192 PA |
14163 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14164 | &remote_address_size, _("\ | |
4d28ad1e AC |
14165 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14166 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14167 | NULL, |
14168 | NULL, /* FIXME: i18n: */ | |
14169 | &setlist, &showlist); | |
c906108c | 14170 | |
ca4f7f8b PA |
14171 | init_all_packet_configs (); |
14172 | ||
444abaca | 14173 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14174 | "X", "binary-download", 1); |
0f71a2f6 | 14175 | |
444abaca | 14176 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14177 | "vCont", "verbose-resume", 0); |
506fb367 | 14178 | |
89be2091 DJ |
14179 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14180 | "QPassSignals", "pass-signals", 0); | |
14181 | ||
82075af2 JS |
14182 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14183 | "QCatchSyscalls", "catch-syscalls", 0); | |
14184 | ||
9b224c5e PA |
14185 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14186 | "QProgramSignals", "program-signals", 0); | |
14187 | ||
aefd8b33 SDJ |
14188 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14189 | "QStartupWithShell", "startup-with-shell", 0); | |
14190 | ||
0a2dde4a SDJ |
14191 | add_packet_config_cmd (&remote_protocol_packets |
14192 | [PACKET_QEnvironmentHexEncoded], | |
14193 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14194 | 0); | |
14195 | ||
14196 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14197 | "QEnvironmentReset", "environment-reset", | |
14198 | 0); | |
14199 | ||
14200 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14201 | "QEnvironmentUnset", "environment-unset", | |
14202 | 0); | |
14203 | ||
444abaca | 14204 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14205 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14206 | |
444abaca | 14207 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14208 | "P", "set-register", 1); |
d471ea57 | 14209 | |
444abaca | 14210 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14211 | "p", "fetch-register", 1); |
b96ec7ac | 14212 | |
444abaca | 14213 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14214 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14215 | |
444abaca | 14216 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14217 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14218 | |
444abaca | 14219 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14220 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14221 | |
444abaca | 14222 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14223 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14224 | |
444abaca | 14225 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14226 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14227 | |
0876f84a DJ |
14228 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14229 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14230 | |
c78fa86a GB |
14231 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14232 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14233 | ||
23181151 DJ |
14234 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14235 | "qXfer:features:read", "target-features", 0); | |
14236 | ||
cfa9d6d9 DJ |
14237 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14238 | "qXfer:libraries:read", "library-info", 0); | |
14239 | ||
2268b414 JK |
14240 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14241 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14242 | ||
fd79ecee DJ |
14243 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14244 | "qXfer:memory-map:read", "memory-map", 0); | |
14245 | ||
0e7f50da UW |
14246 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
14247 | "qXfer:spu:read", "read-spu-object", 0); | |
14248 | ||
14249 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
14250 | "qXfer:spu:write", "write-spu-object", 0); | |
14251 | ||
07e059b5 VP |
14252 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14253 | "qXfer:osdata:read", "osdata", 0); | |
14254 | ||
dc146f7c VP |
14255 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14256 | "qXfer:threads:read", "threads", 0); | |
14257 | ||
4aa995e1 PA |
14258 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14259 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14260 | ||
14261 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14262 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14263 | ||
b3b9301e PA |
14264 | add_packet_config_cmd |
14265 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14266 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14267 | |
169081d0 TG |
14268 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14269 | "qXfer:uib:read", "unwind-info-block", 0); | |
14270 | ||
444abaca | 14271 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14272 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14273 | 0); |
14274 | ||
711e434b PM |
14275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14276 | "qGetTIBAddr", "get-thread-information-block-address", | |
14277 | 0); | |
14278 | ||
40ab02ce MS |
14279 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14280 | "bc", "reverse-continue", 0); | |
14281 | ||
14282 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14283 | "bs", "reverse-step", 0); | |
14284 | ||
be2a5f71 DJ |
14285 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14286 | "qSupported", "supported-packets", 0); | |
14287 | ||
08388c79 DE |
14288 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14289 | "qSearch:memory", "search-memory", 0); | |
14290 | ||
bd3eecc3 PA |
14291 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14292 | "qTStatus", "trace-status", 0); | |
14293 | ||
15a201c8 GB |
14294 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14295 | "vFile:setfs", "hostio-setfs", 0); | |
14296 | ||
a6b151f1 DJ |
14297 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14298 | "vFile:open", "hostio-open", 0); | |
14299 | ||
14300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14301 | "vFile:pread", "hostio-pread", 0); | |
14302 | ||
14303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14304 | "vFile:pwrite", "hostio-pwrite", 0); | |
14305 | ||
14306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14307 | "vFile:close", "hostio-close", 0); | |
14308 | ||
14309 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14310 | "vFile:unlink", "hostio-unlink", 0); | |
14311 | ||
b9e7b9c3 UW |
14312 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14313 | "vFile:readlink", "hostio-readlink", 0); | |
14314 | ||
0a93529c GB |
14315 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14316 | "vFile:fstat", "hostio-fstat", 0); | |
14317 | ||
2d717e4f DJ |
14318 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14319 | "vAttach", "attach", 0); | |
14320 | ||
14321 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14322 | "vRun", "run", 0); | |
14323 | ||
a6f3e723 SL |
14324 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14325 | "QStartNoAckMode", "noack", 0); | |
14326 | ||
82f73884 PA |
14327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14328 | "vKill", "kill", 0); | |
14329 | ||
0b16c5cf PA |
14330 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14331 | "qAttached", "query-attached", 0); | |
14332 | ||
782b2b07 | 14333 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14334 | "ConditionalTracepoints", |
14335 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14336 | |
14337 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14338 | "ConditionalBreakpoints", | |
14339 | "conditional-breakpoints", 0); | |
14340 | ||
d3ce09f5 SS |
14341 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14342 | "BreakpointCommands", | |
14343 | "breakpoint-commands", 0); | |
14344 | ||
7a697b8d SS |
14345 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14346 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14347 | |
409873ef SS |
14348 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14349 | "TracepointSource", "TracepointSource", 0); | |
14350 | ||
d914c394 SS |
14351 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14352 | "QAllow", "allow", 0); | |
14353 | ||
0fb4aa4b PA |
14354 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14355 | "StaticTracepoints", "static-tracepoints", 0); | |
14356 | ||
1e4d1764 YQ |
14357 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14358 | "InstallInTrace", "install-in-trace", 0); | |
14359 | ||
0fb4aa4b PA |
14360 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14361 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14362 | ||
78d85199 YQ |
14363 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14364 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14365 | ||
03583c20 UW |
14366 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14367 | "QDisableRandomization", "disable-randomization", 0); | |
14368 | ||
d1feda86 YQ |
14369 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14370 | "QAgent", "agent", 0); | |
14371 | ||
f6f899bf HAQ |
14372 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14373 | "QTBuffer:size", "trace-buffer-size", 0); | |
14374 | ||
9accd112 MM |
14375 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14376 | "Qbtrace:off", "disable-btrace", 0); | |
14377 | ||
14378 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14379 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14380 | ||
14381 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14382 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14383 | |
14384 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14385 | "qXfer:btrace", "read-btrace", 0); | |
14386 | ||
f4abbc16 MM |
14387 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14388 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14389 | ||
d33501a5 MM |
14390 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14391 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14392 | ||
73b8c1fd PA |
14393 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14394 | "multiprocess-feature", "multiprocess-feature", 0); | |
14395 | ||
f7e6eed5 PA |
14396 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14397 | "swbreak-feature", "swbreak-feature", 0); | |
14398 | ||
14399 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14400 | "hwbreak-feature", "hwbreak-feature", 0); | |
14401 | ||
89245bc0 DB |
14402 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14403 | "fork-event-feature", "fork-event-feature", 0); | |
14404 | ||
14405 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14406 | "vfork-event-feature", "vfork-event-feature", 0); | |
14407 | ||
b20a6524 MM |
14408 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14409 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14410 | ||
750ce8d1 YQ |
14411 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14412 | "vContSupported", "verbose-resume-supported", 0); | |
14413 | ||
94585166 DB |
14414 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14415 | "exec-event-feature", "exec-event-feature", 0); | |
14416 | ||
de979965 PA |
14417 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14418 | "vCtrlC", "ctrl-c", 0); | |
14419 | ||
65706a29 PA |
14420 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14421 | "QThreadEvents", "thread-events", 0); | |
14422 | ||
f2faf941 PA |
14423 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14424 | "N stop reply", "no-resumed-stop-reply", 0); | |
14425 | ||
0b736949 DB |
14426 | /* Assert that we've registered "set remote foo-packet" commands |
14427 | for all packet configs. */ | |
ca4f7f8b PA |
14428 | { |
14429 | int i; | |
14430 | ||
14431 | for (i = 0; i < PACKET_MAX; i++) | |
14432 | { | |
14433 | /* Ideally all configs would have a command associated. Some | |
14434 | still don't though. */ | |
14435 | int excepted; | |
14436 | ||
14437 | switch (i) | |
14438 | { | |
14439 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14440 | case PACKET_EnableDisableTracepoints_feature: |
14441 | case PACKET_tracenz_feature: | |
14442 | case PACKET_DisconnectedTracing_feature: | |
14443 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14444 | case PACKET_qCRC: |
14445 | /* Additions to this list need to be well justified: | |
14446 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14447 | excepted = 1; |
14448 | break; | |
14449 | default: | |
14450 | excepted = 0; | |
14451 | break; | |
14452 | } | |
14453 | ||
14454 | /* This catches both forgetting to add a config command, and | |
14455 | forgetting to remove a packet from the exception list. */ | |
14456 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14457 | } | |
14458 | } | |
14459 | ||
37a105a1 DJ |
14460 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14461 | Z sub-packet has its own set and show commands, but users may | |
14462 | have sets to this variable in their .gdbinit files (or in their | |
14463 | documentation). */ | |
e9e68a56 | 14464 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
14465 | &remote_Z_packet_detect, _("\ |
14466 | Set use of remote protocol `Z' packets"), _("\ | |
14467 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 14468 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14469 | packets."), |
e9e68a56 | 14470 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14471 | show_remote_protocol_Z_packet_cmd, |
14472 | /* FIXME: i18n: Use of remote protocol | |
14473 | `Z' packets is %s. */ | |
e9e68a56 | 14474 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14475 | |
a6b151f1 DJ |
14476 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
14477 | Manipulate files on the remote system\n\ | |
14478 | Transfer files to and from the remote target system."), | |
14479 | &remote_cmdlist, "remote ", | |
14480 | 0 /* allow-unknown */, &cmdlist); | |
14481 | ||
14482 | add_cmd ("put", class_files, remote_put_command, | |
14483 | _("Copy a local file to the remote system."), | |
14484 | &remote_cmdlist); | |
14485 | ||
14486 | add_cmd ("get", class_files, remote_get_command, | |
14487 | _("Copy a remote file to the local system."), | |
14488 | &remote_cmdlist); | |
14489 | ||
14490 | add_cmd ("delete", class_files, remote_delete_command, | |
14491 | _("Delete a remote file."), | |
14492 | &remote_cmdlist); | |
14493 | ||
2d717e4f | 14494 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14495 | &remote_exec_file_var, _("\ |
2d717e4f | 14496 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
14497 | Show the remote pathname for \"run\""), NULL, |
14498 | set_remote_exec_file, | |
14499 | show_remote_exec_file, | |
14500 | &remote_set_cmdlist, | |
14501 | &remote_show_cmdlist); | |
2d717e4f | 14502 | |
c1e36e3e PA |
14503 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14504 | &use_range_stepping, _("\ | |
14505 | Enable or disable range stepping."), _("\ | |
14506 | Show whether target-assisted range stepping is enabled."), _("\ | |
14507 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14508 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14509 | of issuing multiple single-steps. This speeds up source level\n\ | |
14510 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14511 | stepping is supported by the target. The default is on."), | |
14512 | set_range_stepping, | |
14513 | show_range_stepping, | |
14514 | &setlist, | |
14515 | &showlist); | |
14516 | ||
449092f6 CV |
14517 | /* Eventually initialize fileio. See fileio.c */ |
14518 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14519 | |
ba348170 | 14520 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14521 | special ptids with it set to != 0. */ |
ba348170 PA |
14522 | magic_null_ptid = ptid_build (42000, -1, 1); |
14523 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14524 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
14525 | |
14526 | target_buf_size = 2048; | |
224c3ddb | 14527 | target_buf = (char *) xmalloc (target_buf_size); |
c906108c | 14528 | } |
10760264 | 14529 |