Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
618f726f | 3 | Copyright (C) 1988-2016 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" |
35b1e5cc | 74 | |
0df8b418 | 75 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
76 | static char *target_buf; |
77 | static long target_buf_size; | |
35b1e5cc | 78 | |
94585166 DB |
79 | /* Per-program-space data key. */ |
80 | static const struct program_space_data *remote_pspace_data; | |
81 | ||
82 | /* The variable registered as the control variable used by the | |
83 | remote exec-file commands. While the remote exec-file setting is | |
84 | per-program-space, the set/show machinery uses this as the | |
85 | location of the remote exec-file value. */ | |
86 | static char *remote_exec_file_var; | |
87 | ||
6765f3e5 DJ |
88 | /* The size to align memory write packets, when practical. The protocol |
89 | does not guarantee any alignment, and gdb will generate short | |
90 | writes and unaligned writes, but even as a best-effort attempt this | |
91 | can improve bulk transfers. For instance, if a write is misaligned | |
92 | relative to the target's data bus, the stub may need to make an extra | |
93 | round trip fetching data from the target. This doesn't make a | |
94 | huge difference, but it's easy to do, so we try to be helpful. | |
95 | ||
96 | The alignment chosen is arbitrary; usually data bus width is | |
97 | important here, not the possibly larger cache line size. */ | |
98 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
99 | ||
23860348 | 100 | /* Prototypes for local functions. */ |
6d820c5c | 101 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 102 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 103 | int forever, int *is_notif); |
6426a772 | 104 | |
a14ed312 | 105 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 106 | |
f32dbf8c MM |
107 | static void remote_prepare_to_store (struct target_ops *self, |
108 | struct regcache *regcache); | |
c906108c | 109 | |
014f9477 TT |
110 | static void remote_open_1 (const char *, int, struct target_ops *, |
111 | int extended_p); | |
c906108c | 112 | |
de90e03d | 113 | static void remote_close (struct target_ops *self); |
c906108c | 114 | |
cbb8991c DB |
115 | struct remote_state; |
116 | ||
117 | static int remote_vkill (int pid, struct remote_state *rs); | |
118 | ||
8020350c DB |
119 | static void remote_kill_k (void); |
120 | ||
136d6dae | 121 | static void remote_mourn (struct target_ops *ops); |
c906108c | 122 | |
a14ed312 | 123 | static void extended_remote_restart (void); |
c906108c | 124 | |
6d820c5c | 125 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 126 | |
a14ed312 | 127 | static int readchar (int timeout); |
c906108c | 128 | |
c33e31fd PA |
129 | static void remote_serial_write (const char *str, int len); |
130 | ||
7d85a9c0 | 131 | static void remote_kill (struct target_ops *ops); |
c906108c | 132 | |
6a109b6b | 133 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 134 | |
6a109b6b | 135 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 136 | |
6a3753b3 | 137 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 138 | |
65706a29 PA |
139 | static void remote_thread_events (struct target_ops *ops, int enable); |
140 | ||
a14ed312 | 141 | static void interrupt_query (void); |
c906108c | 142 | |
79d7f229 PA |
143 | static void set_general_thread (struct ptid ptid); |
144 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 145 | |
a14ed312 | 146 | static void get_offsets (void); |
c906108c | 147 | |
6d820c5c DJ |
148 | static void skip_frame (void); |
149 | ||
150 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 151 | |
a14ed312 | 152 | static int hexnumlen (ULONGEST num); |
c906108c | 153 | |
a14ed312 | 154 | static void init_remote_ops (void); |
c906108c | 155 | |
a14ed312 | 156 | static void init_extended_remote_ops (void); |
c906108c | 157 | |
1eab8a48 | 158 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 159 | |
a14ed312 | 160 | static int stubhex (int ch); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumstr (char *, ULONGEST); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 165 | |
a14ed312 | 166 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 167 | |
baa336ce | 168 | static void print_packet (const char *); |
c906108c | 169 | |
a14ed312 | 170 | static void compare_sections_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static void packet_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 175 | |
39f77062 | 176 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 177 | |
baa336ce | 178 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 179 | |
a14ed312 | 180 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 181 | |
5a2468f5 | 182 | struct packet_config; |
5a2468f5 | 183 | |
a14ed312 | 184 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 185 | |
bb572ddd DJ |
186 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
187 | int from_tty, | |
188 | struct cmd_list_element *c, | |
189 | const char *value); | |
190 | ||
82f73884 PA |
191 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
192 | static ptid_t read_ptid (char *buf, char **obuf); | |
193 | ||
c378d69d | 194 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 195 | |
8bd200f1 TT |
196 | static int remote_get_trace_status (struct target_ops *self, |
197 | struct trace_status *ts); | |
d5551862 | 198 | |
ab6617cc TT |
199 | static int remote_upload_tracepoints (struct target_ops *self, |
200 | struct uploaded_tp **utpp); | |
00bf0b85 | 201 | |
181e3713 TT |
202 | static int remote_upload_trace_state_variables (struct target_ops *self, |
203 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 204 | |
c8d104ad PA |
205 | static void remote_query_supported (void); |
206 | ||
36d25514 | 207 | static void remote_check_symbols (void); |
c8d104ad | 208 | |
a14ed312 | 209 | void _initialize_remote (void); |
c906108c | 210 | |
74531fed | 211 | struct stop_reply; |
74531fed | 212 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 213 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 214 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 215 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
216 | static int peek_stop_reply (ptid_t ptid); |
217 | ||
cbb8991c DB |
218 | struct threads_listing_context; |
219 | static void remove_new_fork_children (struct threads_listing_context *); | |
220 | ||
74531fed | 221 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 222 | |
e3594fd1 | 223 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 224 | |
d962ef82 DJ |
225 | static int remote_read_description_p (struct target_ops *target); |
226 | ||
176a6961 | 227 | static void remote_console_output (char *msg); |
dde08ee1 | 228 | |
efcc2da7 | 229 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 230 | |
78eff0ec | 231 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 232 | |
f4abbc16 MM |
233 | static void remote_btrace_reset (void); |
234 | ||
c0272db5 TW |
235 | static void remote_btrace_maybe_reopen (void); |
236 | ||
221e1a37 PA |
237 | static int stop_reply_queue_length (void); |
238 | ||
80152258 PA |
239 | static void readahead_cache_invalidate (void); |
240 | ||
048094ac PA |
241 | static void remote_unpush_and_throw (void); |
242 | ||
a6b151f1 DJ |
243 | /* For "remote". */ |
244 | ||
245 | static struct cmd_list_element *remote_cmdlist; | |
246 | ||
bb572ddd DJ |
247 | /* For "set remote" and "show remote". */ |
248 | ||
249 | static struct cmd_list_element *remote_set_cmdlist; | |
250 | static struct cmd_list_element *remote_show_cmdlist; | |
251 | ||
d458bd84 PA |
252 | /* Stub vCont actions support. |
253 | ||
254 | Each field is a boolean flag indicating whether the stub reports | |
255 | support for the corresponding action. */ | |
256 | ||
257 | struct vCont_action_support | |
258 | { | |
259 | /* vCont;t */ | |
260 | int t; | |
c1e36e3e PA |
261 | |
262 | /* vCont;r */ | |
263 | int r; | |
750ce8d1 YQ |
264 | |
265 | /* vCont;s */ | |
266 | int s; | |
267 | ||
268 | /* vCont;S */ | |
269 | int S; | |
d458bd84 PA |
270 | }; |
271 | ||
c1e36e3e PA |
272 | /* Controls whether GDB is willing to use range stepping. */ |
273 | ||
274 | static int use_range_stepping = 1; | |
275 | ||
0d031856 TT |
276 | #define OPAQUETHREADBYTES 8 |
277 | ||
278 | /* a 64 bit opaque identifier */ | |
279 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
280 | ||
281 | /* About this many threadisds fit in a packet. */ | |
282 | ||
283 | #define MAXTHREADLISTRESULTS 32 | |
284 | ||
80152258 PA |
285 | /* Data for the vFile:pread readahead cache. */ |
286 | ||
287 | struct readahead_cache | |
288 | { | |
289 | /* The file descriptor for the file that is being cached. -1 if the | |
290 | cache is invalid. */ | |
291 | int fd; | |
292 | ||
293 | /* The offset into the file that the cache buffer corresponds | |
294 | to. */ | |
295 | ULONGEST offset; | |
296 | ||
297 | /* The buffer holding the cache contents. */ | |
298 | gdb_byte *buf; | |
299 | /* The buffer's size. We try to read as much as fits into a packet | |
300 | at a time. */ | |
301 | size_t bufsize; | |
302 | ||
303 | /* Cache hit and miss counters. */ | |
304 | ULONGEST hit_count; | |
305 | ULONGEST miss_count; | |
306 | }; | |
307 | ||
ea9c271d DJ |
308 | /* Description of the remote protocol state for the currently |
309 | connected target. This is per-target state, and independent of the | |
310 | selected architecture. */ | |
311 | ||
312 | struct remote_state | |
313 | { | |
314 | /* A buffer to use for incoming packets, and its current size. The | |
315 | buffer is grown dynamically for larger incoming packets. | |
316 | Outgoing packets may also be constructed in this buffer. | |
317 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
318 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
319 | packets. */ | |
320 | char *buf; | |
321 | long buf_size; | |
be2a5f71 | 322 | |
1e51243a PA |
323 | /* True if we're going through initial connection setup (finding out |
324 | about the remote side's threads, relocating symbols, etc.). */ | |
325 | int starting_up; | |
326 | ||
be2a5f71 DJ |
327 | /* If we negotiated packet size explicitly (and thus can bypass |
328 | heuristics for the largest packet size that will not overflow | |
329 | a buffer in the stub), this will be set to that packet size. | |
330 | Otherwise zero, meaning to use the guessed size. */ | |
331 | long explicit_packet_size; | |
2d717e4f DJ |
332 | |
333 | /* remote_wait is normally called when the target is running and | |
334 | waits for a stop reply packet. But sometimes we need to call it | |
335 | when the target is already stopped. We can send a "?" packet | |
336 | and have remote_wait read the response. Or, if we already have | |
337 | the response, we can stash it in BUF and tell remote_wait to | |
338 | skip calling getpkt. This flag is set when BUF contains a | |
339 | stop reply packet and the target is not waiting. */ | |
340 | int cached_wait_status; | |
a6f3e723 SL |
341 | |
342 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
343 | expect acks from each other. The connection is assumed to be | |
344 | reliable. */ | |
345 | int noack_mode; | |
82f73884 PA |
346 | |
347 | /* True if we're connected in extended remote mode. */ | |
348 | int extended; | |
349 | ||
e24a49d8 PA |
350 | /* True if we resumed the target and we're waiting for the target to |
351 | stop. In the mean time, we can't start another command/query. | |
352 | The remote server wouldn't be ready to process it, so we'd | |
353 | timeout waiting for a reply that would never come and eventually | |
354 | we'd close the connection. This can happen in asynchronous mode | |
355 | because we allow GDB commands while the target is running. */ | |
356 | int waiting_for_stop_reply; | |
74531fed | 357 | |
d458bd84 PA |
358 | /* The status of the stub support for the various vCont actions. */ |
359 | struct vCont_action_support supports_vCont; | |
782b2b07 | 360 | |
3a29589a DJ |
361 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
362 | responded to that. */ | |
363 | int ctrlc_pending_p; | |
5d93a237 | 364 | |
048094ac PA |
365 | /* True if we saw a Ctrl-C while reading or writing from/to the |
366 | remote descriptor. At that point it is not safe to send a remote | |
367 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
368 | process it once we're done with sending/receiving the current | |
369 | packet, which should be shortly. If however that takes too long, | |
370 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
371 | int got_ctrlc_during_io; | |
372 | ||
5d93a237 TT |
373 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
374 | remote_open knows that we don't have a file open when the program | |
375 | starts. */ | |
376 | struct serial *remote_desc; | |
47f8a51d TT |
377 | |
378 | /* These are the threads which we last sent to the remote system. The | |
379 | TID member will be -1 for all or -2 for not sent yet. */ | |
380 | ptid_t general_thread; | |
381 | ptid_t continue_thread; | |
262e1174 TT |
382 | |
383 | /* This is the traceframe which we last selected on the remote system. | |
384 | It will be -1 if no traceframe is selected. */ | |
385 | int remote_traceframe_number; | |
747dc59d TT |
386 | |
387 | char *last_pass_packet; | |
5e4a05c4 TT |
388 | |
389 | /* The last QProgramSignals packet sent to the target. We bypass | |
390 | sending a new program signals list down to the target if the new | |
391 | packet is exactly the same as the last we sent. IOW, we only let | |
392 | the target know about program signals list changes. */ | |
393 | char *last_program_signals_packet; | |
b73be471 TT |
394 | |
395 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
396 | |
397 | int last_sent_step; | |
8e88304f | 398 | |
3a00c802 PA |
399 | /* The execution direction of the last resume we got. */ |
400 | enum exec_direction_kind last_resume_exec_dir; | |
401 | ||
8e88304f TT |
402 | char *finished_object; |
403 | char *finished_annex; | |
404 | ULONGEST finished_offset; | |
b80fafe3 TT |
405 | |
406 | /* Should we try the 'ThreadInfo' query packet? | |
407 | ||
408 | This variable (NOT available to the user: auto-detect only!) | |
409 | determines whether GDB will use the new, simpler "ThreadInfo" | |
410 | query or the older, more complex syntax for thread queries. | |
411 | This is an auto-detect variable (set to true at each connect, | |
412 | and set to false when the target fails to recognize it). */ | |
413 | int use_threadinfo_query; | |
414 | int use_threadextra_query; | |
88b496c3 | 415 | |
0d031856 TT |
416 | threadref echo_nextthread; |
417 | threadref nextthread; | |
418 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
419 | |
420 | /* The state of remote notification. */ | |
421 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
422 | |
423 | /* The branch trace configuration. */ | |
424 | struct btrace_config btrace_config; | |
15a201c8 GB |
425 | |
426 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
427 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
428 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
429 | has yet been sent. */ | |
430 | int fs_pid; | |
80152258 PA |
431 | |
432 | /* A readahead cache for vFile:pread. Often, reading a binary | |
433 | involves a sequence of small reads. E.g., when parsing an ELF | |
434 | file. A readahead cache helps mostly the case of remote | |
435 | debugging on a connection with higher latency, due to the | |
436 | request/reply nature of the RSP. We only cache data for a single | |
437 | file descriptor at a time. */ | |
438 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
439 | }; |
440 | ||
dc146f7c VP |
441 | /* Private data that we'll store in (struct thread_info)->private. */ |
442 | struct private_thread_info | |
443 | { | |
444 | char *extra; | |
79efa585 | 445 | char *name; |
dc146f7c | 446 | int core; |
799a2abe PA |
447 | |
448 | /* Whether the target stopped for a breakpoint/watchpoint. */ | |
449 | enum target_stop_reason stop_reason; | |
450 | ||
451 | /* This is set to the data address of the access causing the target | |
452 | to stop for a watchpoint. */ | |
453 | CORE_ADDR watch_data_address; | |
dc146f7c VP |
454 | }; |
455 | ||
456 | static void | |
457 | free_private_thread_info (struct private_thread_info *info) | |
458 | { | |
459 | xfree (info->extra); | |
79efa585 | 460 | xfree (info->name); |
dc146f7c VP |
461 | xfree (info); |
462 | } | |
463 | ||
ea9c271d DJ |
464 | /* This data could be associated with a target, but we do not always |
465 | have access to the current target when we need it, so for now it is | |
466 | static. This will be fine for as long as only one target is in use | |
467 | at a time. */ | |
cf792862 | 468 | static struct remote_state *remote_state; |
ea9c271d DJ |
469 | |
470 | static struct remote_state * | |
0b83947e | 471 | get_remote_state_raw (void) |
ea9c271d | 472 | { |
cf792862 TT |
473 | return remote_state; |
474 | } | |
475 | ||
476 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
477 | return it. */ | |
478 | ||
479 | static struct remote_state * | |
480 | new_remote_state (void) | |
481 | { | |
482 | struct remote_state *result = XCNEW (struct remote_state); | |
483 | ||
484 | /* The default buffer size is unimportant; it will be expanded | |
485 | whenever a larger buffer is needed. */ | |
486 | result->buf_size = 400; | |
224c3ddb | 487 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 488 | result->remote_traceframe_number = -1; |
b73be471 | 489 | result->last_sent_signal = GDB_SIGNAL_0; |
3a00c802 | 490 | result->last_resume_exec_dir = EXEC_FORWARD; |
15a201c8 | 491 | result->fs_pid = -1; |
cf792862 TT |
492 | |
493 | return result; | |
ea9c271d DJ |
494 | } |
495 | ||
496 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 497 | |
ad10f812 AC |
498 | struct packet_reg |
499 | { | |
500 | long offset; /* Offset into G packet. */ | |
501 | long regnum; /* GDB's internal register number. */ | |
502 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 503 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 504 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 505 | at present. */ |
f5656ead | 506 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 507 | at present. */ |
ad10f812 AC |
508 | }; |
509 | ||
ea9c271d | 510 | struct remote_arch_state |
d01949b6 | 511 | { |
ad10f812 AC |
512 | /* Description of the remote protocol registers. */ |
513 | long sizeof_g_packet; | |
b323314b AC |
514 | |
515 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 516 | (making an array gdbarch_num_regs in size). */ |
b323314b | 517 | struct packet_reg *regs; |
ad10f812 | 518 | |
d01949b6 AC |
519 | /* This is the size (in chars) of the first response to the ``g'' |
520 | packet. It is used as a heuristic when determining the maximum | |
521 | size of memory-read and memory-write packets. A target will | |
522 | typically only reserve a buffer large enough to hold the ``g'' | |
523 | packet. The size does not include packet overhead (headers and | |
23860348 | 524 | trailers). */ |
d01949b6 AC |
525 | long actual_register_packet_size; |
526 | ||
527 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 528 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
529 | long remote_packet_size; |
530 | }; | |
531 | ||
35b1e5cc SS |
532 | /* Utility: generate error from an incoming stub packet. */ |
533 | static void | |
534 | trace_error (char *buf) | |
535 | { | |
536 | if (*buf++ != 'E') | |
537 | return; /* not an error msg */ | |
538 | switch (*buf) | |
539 | { | |
540 | case '1': /* malformed packet error */ | |
541 | if (*++buf == '0') /* general case: */ | |
542 | error (_("remote.c: error in outgoing packet.")); | |
543 | else | |
544 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
545 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
546 | default: |
547 | error (_("Target returns error code '%s'."), buf); | |
548 | } | |
549 | } | |
550 | ||
551 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
552 | static char * | |
553 | remote_get_noisy_reply (char **buf_p, | |
554 | long *sizeof_buf) | |
555 | { | |
556 | do /* Loop on reply from remote stub. */ | |
557 | { | |
558 | char *buf; | |
a744cf53 | 559 | |
0df8b418 | 560 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
561 | getpkt (buf_p, sizeof_buf, 0); |
562 | buf = *buf_p; | |
ad91cd99 | 563 | if (buf[0] == 'E') |
35b1e5cc | 564 | trace_error (buf); |
61012eef | 565 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
566 | { |
567 | ULONGEST ul; | |
568 | CORE_ADDR from, to, org_to; | |
569 | char *p, *pp; | |
570 | int adjusted_size = 0; | |
7556d4a4 | 571 | int relocated = 0; |
dde08ee1 PA |
572 | |
573 | p = buf + strlen ("qRelocInsn:"); | |
574 | pp = unpack_varlen_hex (p, &ul); | |
575 | if (*pp != ';') | |
cb91c06a | 576 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
577 | from = ul; |
578 | ||
579 | p = pp + 1; | |
a9cbf802 | 580 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
581 | to = ul; |
582 | ||
583 | org_to = to; | |
584 | ||
492d29ea | 585 | TRY |
dde08ee1 | 586 | { |
f5656ead | 587 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 588 | relocated = 1; |
dde08ee1 | 589 | } |
492d29ea | 590 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
591 | { |
592 | if (ex.error == MEMORY_ERROR) | |
593 | { | |
594 | /* Propagate memory errors silently back to the | |
595 | target. The stub may have limited the range of | |
596 | addresses we can write to, for example. */ | |
597 | } | |
598 | else | |
599 | { | |
600 | /* Something unexpectedly bad happened. Be verbose | |
601 | so we can tell what, and propagate the error back | |
602 | to the stub, so it doesn't get stuck waiting for | |
603 | a response. */ | |
604 | exception_fprintf (gdb_stderr, ex, | |
605 | _("warning: relocating instruction: ")); | |
606 | } | |
607 | putpkt ("E01"); | |
608 | } | |
492d29ea | 609 | END_CATCH |
7556d4a4 PA |
610 | |
611 | if (relocated) | |
dde08ee1 PA |
612 | { |
613 | adjusted_size = to - org_to; | |
614 | ||
bba74b36 | 615 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
616 | putpkt (buf); |
617 | } | |
dde08ee1 | 618 | } |
ad91cd99 | 619 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
620 | remote_console_output (buf + 1); /* 'O' message from stub */ |
621 | else | |
0df8b418 | 622 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
623 | } |
624 | while (1); | |
625 | } | |
3c3bea1c | 626 | |
d01949b6 AC |
627 | /* Handle for retreving the remote protocol data from gdbarch. */ |
628 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
629 | ||
ea9c271d DJ |
630 | static struct remote_arch_state * |
631 | get_remote_arch_state (void) | |
d01949b6 | 632 | { |
17d8546e | 633 | gdb_assert (target_gdbarch () != NULL); |
19ba03f4 SM |
634 | return ((struct remote_arch_state *) |
635 | gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle)); | |
d01949b6 AC |
636 | } |
637 | ||
0b83947e DJ |
638 | /* Fetch the global remote target state. */ |
639 | ||
640 | static struct remote_state * | |
641 | get_remote_state (void) | |
642 | { | |
643 | /* Make sure that the remote architecture state has been | |
644 | initialized, because doing so might reallocate rs->buf. Any | |
645 | function which calls getpkt also needs to be mindful of changes | |
646 | to rs->buf, but this call limits the number of places which run | |
647 | into trouble. */ | |
648 | get_remote_arch_state (); | |
649 | ||
650 | return get_remote_state_raw (); | |
651 | } | |
652 | ||
94585166 DB |
653 | /* Cleanup routine for the remote module's pspace data. */ |
654 | ||
655 | static void | |
656 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
657 | { | |
19ba03f4 | 658 | char *remote_exec_file = (char *) arg; |
94585166 DB |
659 | |
660 | xfree (remote_exec_file); | |
661 | } | |
662 | ||
663 | /* Fetch the remote exec-file from the current program space. */ | |
664 | ||
665 | static const char * | |
666 | get_remote_exec_file (void) | |
667 | { | |
668 | char *remote_exec_file; | |
669 | ||
19ba03f4 SM |
670 | remote_exec_file |
671 | = (char *) program_space_data (current_program_space, | |
672 | remote_pspace_data); | |
94585166 DB |
673 | if (remote_exec_file == NULL) |
674 | return ""; | |
675 | ||
676 | return remote_exec_file; | |
677 | } | |
678 | ||
679 | /* Set the remote exec file for PSPACE. */ | |
680 | ||
681 | static void | |
682 | set_pspace_remote_exec_file (struct program_space *pspace, | |
683 | char *remote_exec_file) | |
684 | { | |
19ba03f4 | 685 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
686 | |
687 | xfree (old_file); | |
688 | set_program_space_data (pspace, remote_pspace_data, | |
689 | xstrdup (remote_exec_file)); | |
690 | } | |
691 | ||
692 | /* The "set/show remote exec-file" set command hook. */ | |
693 | ||
694 | static void | |
695 | set_remote_exec_file (char *ignored, int from_tty, | |
696 | struct cmd_list_element *c) | |
697 | { | |
698 | gdb_assert (remote_exec_file_var != NULL); | |
699 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
700 | } | |
701 | ||
702 | /* The "set/show remote exec-file" show command hook. */ | |
703 | ||
704 | static void | |
705 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
706 | struct cmd_list_element *cmd, const char *value) | |
707 | { | |
708 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
709 | } | |
710 | ||
74ca34ce DJ |
711 | static int |
712 | compare_pnums (const void *lhs_, const void *rhs_) | |
713 | { | |
19ba03f4 SM |
714 | const struct packet_reg * const *lhs |
715 | = (const struct packet_reg * const *) lhs_; | |
716 | const struct packet_reg * const *rhs | |
717 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
718 | |
719 | if ((*lhs)->pnum < (*rhs)->pnum) | |
720 | return -1; | |
721 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
722 | return 0; | |
723 | else | |
724 | return 1; | |
725 | } | |
726 | ||
c21236dc PA |
727 | static int |
728 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 729 | { |
74ca34ce | 730 | int regnum, num_remote_regs, offset; |
74ca34ce | 731 | struct packet_reg **remote_regs; |
ea9c271d | 732 | |
4a22f64d | 733 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 734 | { |
c21236dc | 735 | struct packet_reg *r = ®s[regnum]; |
baef701f | 736 | |
4a22f64d | 737 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
738 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
739 | r->pnum = -1; | |
740 | else | |
741 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
742 | ||
b323314b | 743 | r->regnum = regnum; |
74ca34ce DJ |
744 | } |
745 | ||
746 | /* Define the g/G packet format as the contents of each register | |
747 | with a remote protocol number, in order of ascending protocol | |
748 | number. */ | |
749 | ||
224c3ddb | 750 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 751 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 752 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 753 | regnum++) |
c21236dc PA |
754 | if (regs[regnum].pnum != -1) |
755 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 756 | |
74ca34ce DJ |
757 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
758 | compare_pnums); | |
759 | ||
760 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
761 | { | |
762 | remote_regs[regnum]->in_g_packet = 1; | |
763 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 764 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
765 | } |
766 | ||
c21236dc PA |
767 | return offset; |
768 | } | |
769 | ||
770 | /* Given the architecture described by GDBARCH, return the remote | |
771 | protocol register's number and the register's offset in the g/G | |
772 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
773 | If the target does not have a mapping for REGNUM, return false, | |
774 | otherwise, return true. */ | |
775 | ||
776 | int | |
777 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
778 | int *pnum, int *poffset) | |
779 | { | |
c21236dc PA |
780 | struct packet_reg *regs; |
781 | struct cleanup *old_chain; | |
782 | ||
783 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
784 | ||
224c3ddb | 785 | regs = XCNEWVEC (struct packet_reg, gdbarch_num_regs (gdbarch)); |
c21236dc PA |
786 | old_chain = make_cleanup (xfree, regs); |
787 | ||
54887903 | 788 | map_regcache_remote_table (gdbarch, regs); |
c21236dc PA |
789 | |
790 | *pnum = regs[regnum].pnum; | |
791 | *poffset = regs[regnum].offset; | |
792 | ||
793 | do_cleanups (old_chain); | |
794 | ||
795 | return *pnum != -1; | |
796 | } | |
797 | ||
798 | static void * | |
799 | init_remote_state (struct gdbarch *gdbarch) | |
800 | { | |
801 | struct remote_state *rs = get_remote_state_raw (); | |
802 | struct remote_arch_state *rsa; | |
803 | ||
804 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
805 | ||
806 | /* Use the architecture to build a regnum<->pnum table, which will be | |
807 | 1:1 unless a feature set specifies otherwise. */ | |
808 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
809 | gdbarch_num_regs (gdbarch), | |
810 | struct packet_reg); | |
811 | ||
74ca34ce DJ |
812 | /* Record the maximum possible size of the g packet - it may turn out |
813 | to be smaller. */ | |
c21236dc | 814 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 815 | |
0df8b418 | 816 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
817 | remote stubs have a hardwired buffer size of 400 bytes |
818 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
819 | as the maximum packet-size to ensure that the packet and an extra | |
820 | NUL character can always fit in the buffer. This stops GDB | |
821 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
822 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
823 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 824 | |
ea9c271d DJ |
825 | /* This one is filled in when a ``g'' packet is received. */ |
826 | rsa->actual_register_packet_size = 0; | |
827 | ||
828 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
829 | default, adjust the size accordingly. Remember that each byte is |
830 | encoded as two characters. 32 is the overhead for the packet | |
831 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 832 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 833 | little. */ |
ea9c271d DJ |
834 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
835 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 836 | |
ea9c271d DJ |
837 | /* Make sure that the packet buffer is plenty big enough for |
838 | this architecture. */ | |
839 | if (rs->buf_size < rsa->remote_packet_size) | |
840 | { | |
841 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 842 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 843 | } |
6d820c5c | 844 | |
ea9c271d DJ |
845 | return rsa; |
846 | } | |
847 | ||
848 | /* Return the current allowed size of a remote packet. This is | |
849 | inferred from the current architecture, and should be used to | |
850 | limit the length of outgoing packets. */ | |
851 | static long | |
852 | get_remote_packet_size (void) | |
853 | { | |
be2a5f71 | 854 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
855 | struct remote_arch_state *rsa = get_remote_arch_state (); |
856 | ||
be2a5f71 DJ |
857 | if (rs->explicit_packet_size) |
858 | return rs->explicit_packet_size; | |
859 | ||
ea9c271d | 860 | return rsa->remote_packet_size; |
d01949b6 AC |
861 | } |
862 | ||
ad10f812 | 863 | static struct packet_reg * |
ea9c271d | 864 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 865 | { |
f5656ead | 866 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
867 | return NULL; |
868 | else | |
ad10f812 | 869 | { |
ea9c271d | 870 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 871 | |
b323314b AC |
872 | gdb_assert (r->regnum == regnum); |
873 | return r; | |
ad10f812 | 874 | } |
ad10f812 AC |
875 | } |
876 | ||
877 | static struct packet_reg * | |
ea9c271d | 878 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 879 | { |
b323314b | 880 | int i; |
a744cf53 | 881 | |
f5656ead | 882 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 883 | { |
ea9c271d | 884 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 885 | |
b323314b AC |
886 | if (r->pnum == pnum) |
887 | return r; | |
ad10f812 AC |
888 | } |
889 | return NULL; | |
d01949b6 AC |
890 | } |
891 | ||
c906108c SS |
892 | static struct target_ops remote_ops; |
893 | ||
894 | static struct target_ops extended_remote_ops; | |
895 | ||
6426a772 JM |
896 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
897 | ``forever'' still use the normal timeout mechanism. This is | |
898 | currently used by the ASYNC code to guarentee that target reads | |
899 | during the initial connect always time-out. Once getpkt has been | |
900 | modified to return a timeout indication and, in turn | |
901 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 902 | this can go away. */ |
6426a772 JM |
903 | static int wait_forever_enabled_p = 1; |
904 | ||
9a7071a8 JB |
905 | /* Allow the user to specify what sequence to send to the remote |
906 | when he requests a program interruption: Although ^C is usually | |
907 | what remote systems expect (this is the default, here), it is | |
908 | sometimes preferable to send a break. On other systems such | |
909 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
910 | is required in order to interrupt the execution. */ | |
911 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
912 | const char interrupt_sequence_break[] = "BREAK"; | |
913 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 914 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
915 | { |
916 | interrupt_sequence_control_c, | |
917 | interrupt_sequence_break, | |
918 | interrupt_sequence_break_g, | |
919 | NULL | |
920 | }; | |
921 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
922 | ||
923 | static void | |
924 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
925 | struct cmd_list_element *c, | |
926 | const char *value) | |
927 | { | |
928 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
929 | fprintf_filtered (file, | |
930 | _("Send the ASCII ETX character (Ctrl-c) " | |
931 | "to the remote target to interrupt the " | |
932 | "execution of the program.\n")); | |
933 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
934 | fprintf_filtered (file, | |
935 | _("send a break signal to the remote target " | |
936 | "to interrupt the execution of the program.\n")); | |
937 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
938 | fprintf_filtered (file, | |
939 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
940 | "the remote target to interrupt the execution " | |
941 | "of Linux kernel.\n")); | |
942 | else | |
943 | internal_error (__FILE__, __LINE__, | |
944 | _("Invalid value for interrupt_sequence_mode: %s."), | |
945 | interrupt_sequence_mode); | |
946 | } | |
6426a772 | 947 | |
9a7071a8 JB |
948 | /* This boolean variable specifies whether interrupt_sequence is sent |
949 | to the remote target when gdb connects to it. | |
950 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
951 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
952 | static int interrupt_on_connect = 0; | |
c906108c | 953 | |
9a7071a8 JB |
954 | /* This variable is used to implement the "set/show remotebreak" commands. |
955 | Since these commands are now deprecated in favor of "set/show remote | |
956 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
957 | static int remote_break; |
958 | ||
9a7071a8 JB |
959 | static void |
960 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
961 | { | |
962 | if (remote_break) | |
963 | interrupt_sequence_mode = interrupt_sequence_break; | |
964 | else | |
965 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
966 | } | |
967 | ||
968 | static void | |
969 | show_remotebreak (struct ui_file *file, int from_tty, | |
970 | struct cmd_list_element *c, | |
971 | const char *value) | |
972 | { | |
973 | } | |
974 | ||
c906108c SS |
975 | /* This variable sets the number of bits in an address that are to be |
976 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 977 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
978 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
979 | initial implementation of remote.c restricted the address sent in | |
980 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
981 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
982 | address was never sent. Since fixing this bug may cause a break in | |
983 | some remote targets this variable is principly provided to | |
23860348 | 984 | facilitate backward compatibility. */ |
c906108c | 985 | |
883b9c6c | 986 | static unsigned int remote_address_size; |
c906108c | 987 | |
75c99385 PA |
988 | /* Temporary to track who currently owns the terminal. See |
989 | remote_terminal_* for more details. */ | |
6426a772 JM |
990 | |
991 | static int remote_async_terminal_ours_p; | |
992 | ||
11cf8741 | 993 | \f |
11cf8741 | 994 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
995 | memory read/write packet. MIN (rsa->remote_packet_size, |
996 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 997 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
998 | (speed up transfers). The variables ``preferred_*'' (the user |
999 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1000 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1001 | |
1002 | struct memory_packet_config | |
1003 | { | |
1004 | char *name; | |
1005 | long size; | |
1006 | int fixed_p; | |
1007 | }; | |
1008 | ||
a5c0808e PA |
1009 | /* The default max memory-write-packet-size. The 16k is historical. |
1010 | (It came from older GDB's using alloca for buffers and the | |
1011 | knowledge (folklore?) that some hosts don't cope very well with | |
1012 | large alloca calls.) */ | |
1013 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1014 | ||
1015 | /* The minimum remote packet size for memory transfers. Ensures we | |
1016 | can write at least one byte. */ | |
1017 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1018 | ||
11cf8741 JM |
1019 | /* Compute the current size of a read/write packet. Since this makes |
1020 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1021 | ||
1022 | static long | |
1023 | get_memory_packet_size (struct memory_packet_config *config) | |
1024 | { | |
d01949b6 | 1025 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1026 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1027 | ||
11cf8741 JM |
1028 | long what_they_get; |
1029 | if (config->fixed_p) | |
1030 | { | |
1031 | if (config->size <= 0) | |
a5c0808e | 1032 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1033 | else |
1034 | what_they_get = config->size; | |
1035 | } | |
1036 | else | |
1037 | { | |
ea9c271d | 1038 | what_they_get = get_remote_packet_size (); |
23860348 | 1039 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1040 | if (config->size > 0 |
1041 | && what_they_get > config->size) | |
1042 | what_they_get = config->size; | |
be2a5f71 DJ |
1043 | |
1044 | /* Limit it to the size of the targets ``g'' response unless we have | |
1045 | permission from the stub to use a larger packet size. */ | |
1046 | if (rs->explicit_packet_size == 0 | |
1047 | && rsa->actual_register_packet_size > 0 | |
1048 | && what_they_get > rsa->actual_register_packet_size) | |
1049 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1050 | } |
a5c0808e PA |
1051 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1052 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1053 | |
1054 | /* Make sure there is room in the global buffer for this packet | |
1055 | (including its trailing NUL byte). */ | |
1056 | if (rs->buf_size < what_they_get + 1) | |
1057 | { | |
1058 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1059 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1060 | } |
1061 | ||
11cf8741 JM |
1062 | return what_they_get; |
1063 | } | |
1064 | ||
0df8b418 | 1065 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1066 | something really big then do a sanity check. */ |
11cf8741 JM |
1067 | |
1068 | static void | |
1069 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1070 | { | |
1071 | int fixed_p = config->fixed_p; | |
1072 | long size = config->size; | |
a744cf53 | 1073 | |
11cf8741 | 1074 | if (args == NULL) |
8a3fe4f8 | 1075 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1076 | else if (strcmp (args, "hard") == 0 |
1077 | || strcmp (args, "fixed") == 0) | |
1078 | fixed_p = 1; | |
1079 | else if (strcmp (args, "soft") == 0 | |
1080 | || strcmp (args, "limit") == 0) | |
1081 | fixed_p = 0; | |
1082 | else | |
1083 | { | |
1084 | char *end; | |
a744cf53 | 1085 | |
11cf8741 JM |
1086 | size = strtoul (args, &end, 0); |
1087 | if (args == end) | |
8a3fe4f8 | 1088 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1089 | |
1090 | /* Instead of explicitly capping the size of a packet to or | |
1091 | disallowing it, the user is allowed to set the size to | |
1092 | something arbitrarily large. */ | |
11cf8741 | 1093 | } |
a5c0808e PA |
1094 | |
1095 | /* So that the query shows the correct value. */ | |
1096 | if (size <= 0) | |
1097 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1098 | ||
23860348 | 1099 | /* Extra checks? */ |
11cf8741 JM |
1100 | if (fixed_p && !config->fixed_p) |
1101 | { | |
e2e0b3e5 AC |
1102 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1103 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1104 | config->name, size)) |
8a3fe4f8 | 1105 | error (_("Packet size not changed.")); |
11cf8741 | 1106 | } |
23860348 | 1107 | /* Update the config. */ |
11cf8741 JM |
1108 | config->fixed_p = fixed_p; |
1109 | config->size = size; | |
1110 | } | |
1111 | ||
1112 | static void | |
1113 | show_memory_packet_size (struct memory_packet_config *config) | |
1114 | { | |
a3f17187 | 1115 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1116 | if (config->fixed_p) |
a3f17187 | 1117 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1118 | get_memory_packet_size (config)); |
1119 | else | |
a3f17187 | 1120 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1121 | get_memory_packet_size (config)); |
1122 | } | |
1123 | ||
1124 | static struct memory_packet_config memory_write_packet_config = | |
1125 | { | |
1126 | "memory-write-packet-size", | |
1127 | }; | |
1128 | ||
1129 | static void | |
1130 | set_memory_write_packet_size (char *args, int from_tty) | |
1131 | { | |
1132 | set_memory_packet_size (args, &memory_write_packet_config); | |
1133 | } | |
1134 | ||
1135 | static void | |
1136 | show_memory_write_packet_size (char *args, int from_tty) | |
1137 | { | |
1138 | show_memory_packet_size (&memory_write_packet_config); | |
1139 | } | |
1140 | ||
1141 | static long | |
1142 | get_memory_write_packet_size (void) | |
1143 | { | |
1144 | return get_memory_packet_size (&memory_write_packet_config); | |
1145 | } | |
1146 | ||
1147 | static struct memory_packet_config memory_read_packet_config = | |
1148 | { | |
1149 | "memory-read-packet-size", | |
1150 | }; | |
1151 | ||
1152 | static void | |
1153 | set_memory_read_packet_size (char *args, int from_tty) | |
1154 | { | |
1155 | set_memory_packet_size (args, &memory_read_packet_config); | |
1156 | } | |
1157 | ||
1158 | static void | |
1159 | show_memory_read_packet_size (char *args, int from_tty) | |
1160 | { | |
1161 | show_memory_packet_size (&memory_read_packet_config); | |
1162 | } | |
1163 | ||
1164 | static long | |
1165 | get_memory_read_packet_size (void) | |
1166 | { | |
1167 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1168 | |
11cf8741 JM |
1169 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1170 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1171 | increased beyond this. */ |
1172 | if (size > get_remote_packet_size ()) | |
1173 | size = get_remote_packet_size (); | |
11cf8741 JM |
1174 | return size; |
1175 | } | |
1176 | ||
11cf8741 | 1177 | \f |
5a2468f5 | 1178 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1179 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1180 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1181 | |
1182 | enum packet_support | |
1183 | { | |
1184 | PACKET_SUPPORT_UNKNOWN = 0, | |
1185 | PACKET_ENABLE, | |
1186 | PACKET_DISABLE | |
1187 | }; | |
1188 | ||
5a2468f5 JM |
1189 | struct packet_config |
1190 | { | |
bb572ddd DJ |
1191 | const char *name; |
1192 | const char *title; | |
4082afcc PA |
1193 | |
1194 | /* If auto, GDB auto-detects support for this packet or feature, | |
1195 | either through qSupported, or by trying the packet and looking | |
1196 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1197 | packet. If false, the packet is disabled. Configs that don't |
1198 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1199 | enum auto_boolean detect; |
4082afcc PA |
1200 | |
1201 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1202 | enum packet_support support; |
1203 | }; | |
1204 | ||
d471ea57 | 1205 | /* Analyze a packet's return value and update the packet config |
23860348 | 1206 | accordingly. */ |
d471ea57 AC |
1207 | |
1208 | enum packet_result | |
1209 | { | |
1210 | PACKET_ERROR, | |
1211 | PACKET_OK, | |
1212 | PACKET_UNKNOWN | |
1213 | }; | |
1214 | ||
4082afcc PA |
1215 | static enum packet_support packet_config_support (struct packet_config *config); |
1216 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1217 | |
1218 | static void | |
fba45db2 | 1219 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1220 | { |
1221 | char *support = "internal-error"; | |
a744cf53 | 1222 | |
4082afcc | 1223 | switch (packet_config_support (config)) |
5a2468f5 JM |
1224 | { |
1225 | case PACKET_ENABLE: | |
1226 | support = "enabled"; | |
1227 | break; | |
1228 | case PACKET_DISABLE: | |
1229 | support = "disabled"; | |
1230 | break; | |
1231 | case PACKET_SUPPORT_UNKNOWN: | |
1232 | support = "unknown"; | |
1233 | break; | |
1234 | } | |
1235 | switch (config->detect) | |
1236 | { | |
7f19b9a2 | 1237 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1238 | printf_filtered (_("Support for the `%s' packet " |
1239 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1240 | config->name, support); |
5a2468f5 | 1241 | break; |
7f19b9a2 AC |
1242 | case AUTO_BOOLEAN_TRUE: |
1243 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1244 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1245 | config->name, support); | |
8e248173 | 1246 | break; |
5a2468f5 JM |
1247 | } |
1248 | } | |
1249 | ||
1250 | static void | |
bb572ddd DJ |
1251 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1252 | const char *title, int legacy) | |
d471ea57 | 1253 | { |
5a2468f5 JM |
1254 | char *set_doc; |
1255 | char *show_doc; | |
d471ea57 | 1256 | char *cmd_name; |
3ed07be4 | 1257 | |
5a2468f5 JM |
1258 | config->name = name; |
1259 | config->title = title; | |
b435e160 AC |
1260 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1261 | name, title); | |
3e43a32a MS |
1262 | show_doc = xstrprintf ("Show current use of remote " |
1263 | "protocol `%s' (%s) packet", | |
b435e160 | 1264 | name, title); |
d471ea57 | 1265 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1266 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1267 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1268 | &config->detect, set_doc, |
1269 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1270 | NULL, |
bb572ddd DJ |
1271 | show_remote_protocol_packet_cmd, |
1272 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1273 | /* The command code copies the documentation strings. */ |
1274 | xfree (set_doc); | |
1275 | xfree (show_doc); | |
23860348 | 1276 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1277 | if (legacy) |
1278 | { | |
1279 | char *legacy_name; | |
a744cf53 | 1280 | |
b435e160 | 1281 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1282 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1283 | &remote_set_cmdlist); |
d471ea57 | 1284 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1285 | &remote_show_cmdlist); |
d471ea57 | 1286 | } |
5a2468f5 JM |
1287 | } |
1288 | ||
d471ea57 | 1289 | static enum packet_result |
a76d924d | 1290 | packet_check_result (const char *buf) |
5a2468f5 | 1291 | { |
d471ea57 | 1292 | if (buf[0] != '\0') |
5a2468f5 | 1293 | { |
d471ea57 | 1294 | /* The stub recognized the packet request. Check that the |
23860348 | 1295 | operation succeeded. */ |
a76d924d DJ |
1296 | if (buf[0] == 'E' |
1297 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1298 | && buf[3] == '\0') | |
1299 | /* "Enn" - definitly an error. */ | |
1300 | return PACKET_ERROR; | |
1301 | ||
1302 | /* Always treat "E." as an error. This will be used for | |
1303 | more verbose error messages, such as E.memtypes. */ | |
1304 | if (buf[0] == 'E' && buf[1] == '.') | |
1305 | return PACKET_ERROR; | |
1306 | ||
1307 | /* The packet may or may not be OK. Just assume it is. */ | |
1308 | return PACKET_OK; | |
1309 | } | |
1310 | else | |
1311 | /* The stub does not support the packet. */ | |
1312 | return PACKET_UNKNOWN; | |
1313 | } | |
1314 | ||
1315 | static enum packet_result | |
1316 | packet_ok (const char *buf, struct packet_config *config) | |
1317 | { | |
1318 | enum packet_result result; | |
1319 | ||
4082afcc PA |
1320 | if (config->detect != AUTO_BOOLEAN_TRUE |
1321 | && config->support == PACKET_DISABLE) | |
1322 | internal_error (__FILE__, __LINE__, | |
1323 | _("packet_ok: attempt to use a disabled packet")); | |
1324 | ||
a76d924d DJ |
1325 | result = packet_check_result (buf); |
1326 | switch (result) | |
1327 | { | |
1328 | case PACKET_OK: | |
1329 | case PACKET_ERROR: | |
1330 | /* The stub recognized the packet request. */ | |
4082afcc | 1331 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1332 | { |
d471ea57 AC |
1333 | if (remote_debug) |
1334 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1335 | "Packet %s (%s) is supported\n", |
1336 | config->name, config->title); | |
d471ea57 | 1337 | config->support = PACKET_ENABLE; |
d471ea57 | 1338 | } |
a76d924d DJ |
1339 | break; |
1340 | case PACKET_UNKNOWN: | |
23860348 | 1341 | /* The stub does not support the packet. */ |
4082afcc PA |
1342 | if (config->detect == AUTO_BOOLEAN_AUTO |
1343 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1344 | { |
4082afcc PA |
1345 | /* If the stub previously indicated that the packet was |
1346 | supported then there is a protocol error. */ | |
1347 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1348 | config->name, config->title); | |
1349 | } | |
1350 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1351 | { | |
1352 | /* The user set it wrong. */ | |
1353 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1354 | config->name, config->title); | |
d471ea57 | 1355 | } |
4082afcc PA |
1356 | |
1357 | if (remote_debug) | |
1358 | fprintf_unfiltered (gdb_stdlog, | |
1359 | "Packet %s (%s) is NOT supported\n", | |
1360 | config->name, config->title); | |
1361 | config->support = PACKET_DISABLE; | |
a76d924d | 1362 | break; |
5a2468f5 | 1363 | } |
a76d924d DJ |
1364 | |
1365 | return result; | |
5a2468f5 JM |
1366 | } |
1367 | ||
444abaca DJ |
1368 | enum { |
1369 | PACKET_vCont = 0, | |
1370 | PACKET_X, | |
1371 | PACKET_qSymbol, | |
1372 | PACKET_P, | |
1373 | PACKET_p, | |
1374 | PACKET_Z0, | |
1375 | PACKET_Z1, | |
1376 | PACKET_Z2, | |
1377 | PACKET_Z3, | |
1378 | PACKET_Z4, | |
15a201c8 | 1379 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1380 | PACKET_vFile_open, |
1381 | PACKET_vFile_pread, | |
1382 | PACKET_vFile_pwrite, | |
1383 | PACKET_vFile_close, | |
1384 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1385 | PACKET_vFile_readlink, |
0a93529c | 1386 | PACKET_vFile_fstat, |
0876f84a | 1387 | PACKET_qXfer_auxv, |
23181151 | 1388 | PACKET_qXfer_features, |
c78fa86a | 1389 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1390 | PACKET_qXfer_libraries, |
2268b414 | 1391 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1392 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1393 | PACKET_qXfer_spu_read, |
1394 | PACKET_qXfer_spu_write, | |
07e059b5 | 1395 | PACKET_qXfer_osdata, |
dc146f7c | 1396 | PACKET_qXfer_threads, |
0fb4aa4b | 1397 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1398 | PACKET_qXfer_traceframe_info, |
169081d0 | 1399 | PACKET_qXfer_uib, |
711e434b | 1400 | PACKET_qGetTIBAddr, |
444abaca | 1401 | PACKET_qGetTLSAddr, |
be2a5f71 | 1402 | PACKET_qSupported, |
bd3eecc3 | 1403 | PACKET_qTStatus, |
89be2091 | 1404 | PACKET_QPassSignals, |
82075af2 | 1405 | PACKET_QCatchSyscalls, |
9b224c5e | 1406 | PACKET_QProgramSignals, |
936d2992 | 1407 | PACKET_qCRC, |
08388c79 | 1408 | PACKET_qSearch_memory, |
2d717e4f DJ |
1409 | PACKET_vAttach, |
1410 | PACKET_vRun, | |
a6f3e723 | 1411 | PACKET_QStartNoAckMode, |
82f73884 | 1412 | PACKET_vKill, |
4aa995e1 PA |
1413 | PACKET_qXfer_siginfo_read, |
1414 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1415 | PACKET_qAttached, |
4082afcc PA |
1416 | |
1417 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1418 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1419 | |
1420 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1421 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1422 | |
1423 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1424 | PACKET_BreakpointCommands, |
4082afcc PA |
1425 | |
1426 | /* Support for fast tracepoints. */ | |
7a697b8d | 1427 | PACKET_FastTracepoints, |
4082afcc PA |
1428 | |
1429 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1430 | PACKET_StaticTracepoints, |
4082afcc PA |
1431 | |
1432 | /* Support for installing tracepoints while a trace experiment is | |
1433 | running. */ | |
1e4d1764 | 1434 | PACKET_InstallInTrace, |
4082afcc | 1435 | |
40ab02ce MS |
1436 | PACKET_bc, |
1437 | PACKET_bs, | |
409873ef | 1438 | PACKET_TracepointSource, |
d914c394 | 1439 | PACKET_QAllow, |
78d85199 | 1440 | PACKET_qXfer_fdpic, |
03583c20 | 1441 | PACKET_QDisableRandomization, |
d1feda86 | 1442 | PACKET_QAgent, |
f6f899bf | 1443 | PACKET_QTBuffer_size, |
9accd112 MM |
1444 | PACKET_Qbtrace_off, |
1445 | PACKET_Qbtrace_bts, | |
b20a6524 | 1446 | PACKET_Qbtrace_pt, |
9accd112 | 1447 | PACKET_qXfer_btrace, |
4082afcc PA |
1448 | |
1449 | /* Support for the QNonStop packet. */ | |
1450 | PACKET_QNonStop, | |
1451 | ||
65706a29 PA |
1452 | /* Support for the QThreadEvents packet. */ |
1453 | PACKET_QThreadEvents, | |
1454 | ||
4082afcc PA |
1455 | /* Support for multi-process extensions. */ |
1456 | PACKET_multiprocess_feature, | |
1457 | ||
1458 | /* Support for enabling and disabling tracepoints while a trace | |
1459 | experiment is running. */ | |
1460 | PACKET_EnableDisableTracepoints_feature, | |
1461 | ||
1462 | /* Support for collecting strings using the tracenz bytecode. */ | |
1463 | PACKET_tracenz_feature, | |
1464 | ||
1465 | /* Support for continuing to run a trace experiment while GDB is | |
1466 | disconnected. */ | |
1467 | PACKET_DisconnectedTracing_feature, | |
1468 | ||
1469 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1470 | PACKET_augmented_libraries_svr4_read_feature, | |
1471 | ||
f4abbc16 MM |
1472 | /* Support for the qXfer:btrace-conf:read packet. */ |
1473 | PACKET_qXfer_btrace_conf, | |
1474 | ||
d33501a5 MM |
1475 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1476 | PACKET_Qbtrace_conf_bts_size, | |
1477 | ||
f7e6eed5 PA |
1478 | /* Support for swbreak+ feature. */ |
1479 | PACKET_swbreak_feature, | |
1480 | ||
1481 | /* Support for hwbreak+ feature. */ | |
1482 | PACKET_hwbreak_feature, | |
1483 | ||
89245bc0 DB |
1484 | /* Support for fork events. */ |
1485 | PACKET_fork_event_feature, | |
1486 | ||
1487 | /* Support for vfork events. */ | |
1488 | PACKET_vfork_event_feature, | |
1489 | ||
b20a6524 MM |
1490 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1491 | PACKET_Qbtrace_conf_pt_size, | |
1492 | ||
94585166 DB |
1493 | /* Support for exec events. */ |
1494 | PACKET_exec_event_feature, | |
1495 | ||
750ce8d1 YQ |
1496 | /* Support for query supported vCont actions. */ |
1497 | PACKET_vContSupported, | |
1498 | ||
de979965 PA |
1499 | /* Support remote CTRL-C. */ |
1500 | PACKET_vCtrlC, | |
1501 | ||
f2faf941 PA |
1502 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1503 | PACKET_no_resumed, | |
1504 | ||
444abaca DJ |
1505 | PACKET_MAX |
1506 | }; | |
506fb367 | 1507 | |
444abaca | 1508 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1509 | |
f7e6eed5 PA |
1510 | /* Returns the packet's corresponding "set remote foo-packet" command |
1511 | state. See struct packet_config for more details. */ | |
1512 | ||
1513 | static enum auto_boolean | |
1514 | packet_set_cmd_state (int packet) | |
1515 | { | |
1516 | return remote_protocol_packets[packet].detect; | |
1517 | } | |
1518 | ||
4082afcc PA |
1519 | /* Returns whether a given packet or feature is supported. This takes |
1520 | into account the state of the corresponding "set remote foo-packet" | |
1521 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1522 | |
4082afcc PA |
1523 | static enum packet_support |
1524 | packet_config_support (struct packet_config *config) | |
1525 | { | |
1526 | switch (config->detect) | |
444abaca | 1527 | { |
4082afcc PA |
1528 | case AUTO_BOOLEAN_TRUE: |
1529 | return PACKET_ENABLE; | |
1530 | case AUTO_BOOLEAN_FALSE: | |
1531 | return PACKET_DISABLE; | |
1532 | case AUTO_BOOLEAN_AUTO: | |
1533 | return config->support; | |
1534 | default: | |
1535 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1536 | } |
4082afcc PA |
1537 | } |
1538 | ||
1539 | /* Same as packet_config_support, but takes the packet's enum value as | |
1540 | argument. */ | |
1541 | ||
1542 | static enum packet_support | |
1543 | packet_support (int packet) | |
1544 | { | |
1545 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1546 | ||
1547 | return packet_config_support (config); | |
dc8acb97 MS |
1548 | } |
1549 | ||
5a2468f5 | 1550 | static void |
444abaca DJ |
1551 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1552 | struct cmd_list_element *c, | |
1553 | const char *value) | |
5a2468f5 | 1554 | { |
444abaca | 1555 | struct packet_config *packet; |
5a2468f5 | 1556 | |
444abaca DJ |
1557 | for (packet = remote_protocol_packets; |
1558 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1559 | packet++) | |
1560 | { | |
1561 | if (&packet->detect == c->var) | |
1562 | { | |
1563 | show_packet_config_cmd (packet); | |
1564 | return; | |
1565 | } | |
1566 | } | |
9b20d036 | 1567 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1568 | c->name); |
5a2468f5 JM |
1569 | } |
1570 | ||
d471ea57 AC |
1571 | /* Should we try one of the 'Z' requests? */ |
1572 | ||
1573 | enum Z_packet_type | |
1574 | { | |
1575 | Z_PACKET_SOFTWARE_BP, | |
1576 | Z_PACKET_HARDWARE_BP, | |
1577 | Z_PACKET_WRITE_WP, | |
1578 | Z_PACKET_READ_WP, | |
1579 | Z_PACKET_ACCESS_WP, | |
1580 | NR_Z_PACKET_TYPES | |
1581 | }; | |
96baa820 | 1582 | |
d471ea57 | 1583 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1584 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1585 | |
7f19b9a2 | 1586 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1587 | |
1588 | static void | |
fba45db2 KB |
1589 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1590 | struct cmd_list_element *c) | |
96baa820 | 1591 | { |
d471ea57 | 1592 | int i; |
a744cf53 | 1593 | |
d471ea57 | 1594 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1595 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1596 | } |
1597 | ||
1598 | static void | |
08546159 AC |
1599 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1600 | struct cmd_list_element *c, | |
1601 | const char *value) | |
96baa820 | 1602 | { |
d471ea57 | 1603 | int i; |
a744cf53 | 1604 | |
d471ea57 AC |
1605 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1606 | { | |
444abaca | 1607 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1608 | } |
96baa820 JM |
1609 | } |
1610 | ||
4082afcc PA |
1611 | /* Returns true if the multi-process extensions are in effect. */ |
1612 | ||
1613 | static int | |
1614 | remote_multi_process_p (struct remote_state *rs) | |
1615 | { | |
1616 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1617 | } | |
1618 | ||
de0d863e DB |
1619 | /* Returns true if fork events are supported. */ |
1620 | ||
1621 | static int | |
1622 | remote_fork_event_p (struct remote_state *rs) | |
1623 | { | |
1624 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1625 | } | |
1626 | ||
c269dbdb DB |
1627 | /* Returns true if vfork events are supported. */ |
1628 | ||
1629 | static int | |
1630 | remote_vfork_event_p (struct remote_state *rs) | |
1631 | { | |
1632 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1633 | } | |
1634 | ||
d46addbb DB |
1635 | /* Returns true if exec events are supported. */ |
1636 | ||
1637 | static int | |
1638 | remote_exec_event_p (struct remote_state *rs) | |
1639 | { | |
1640 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1641 | } | |
1642 | ||
cbb8991c DB |
1643 | /* Insert fork catchpoint target routine. If fork events are enabled |
1644 | then return success, nothing more to do. */ | |
1645 | ||
1646 | static int | |
1647 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1648 | { | |
1649 | struct remote_state *rs = get_remote_state (); | |
1650 | ||
1651 | return !remote_fork_event_p (rs); | |
1652 | } | |
1653 | ||
1654 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1655 | return success. */ | |
1656 | ||
1657 | static int | |
1658 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1659 | { | |
1660 | return 0; | |
1661 | } | |
1662 | ||
1663 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1664 | then return success, nothing more to do. */ | |
1665 | ||
1666 | static int | |
1667 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1668 | { | |
1669 | struct remote_state *rs = get_remote_state (); | |
1670 | ||
1671 | return !remote_vfork_event_p (rs); | |
1672 | } | |
1673 | ||
1674 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1675 | return success. */ | |
1676 | ||
1677 | static int | |
1678 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1679 | { | |
1680 | return 0; | |
1681 | } | |
1682 | ||
d46addbb DB |
1683 | /* Insert exec catchpoint target routine. If exec events are |
1684 | enabled, just return success. */ | |
1685 | ||
1686 | static int | |
1687 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1688 | { | |
1689 | struct remote_state *rs = get_remote_state (); | |
1690 | ||
1691 | return !remote_exec_event_p (rs); | |
1692 | } | |
1693 | ||
1694 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1695 | return success. */ | |
1696 | ||
1697 | static int | |
1698 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1699 | { | |
1700 | return 0; | |
1701 | } | |
1702 | ||
74531fed PA |
1703 | \f |
1704 | /* Asynchronous signal handle registered as event loop source for | |
1705 | when we have pending events ready to be passed to the core. */ | |
1706 | ||
1707 | static struct async_event_handler *remote_async_inferior_event_token; | |
1708 | ||
c906108c SS |
1709 | \f |
1710 | ||
79d7f229 PA |
1711 | static ptid_t magic_null_ptid; |
1712 | static ptid_t not_sent_ptid; | |
1713 | static ptid_t any_thread_ptid; | |
1714 | ||
0b16c5cf PA |
1715 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1716 | detach instead of killing it when bailing out). */ | |
1717 | ||
1718 | static int | |
1719 | remote_query_attached (int pid) | |
1720 | { | |
1721 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1722 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1723 | |
4082afcc | 1724 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1725 | return 0; |
1726 | ||
1727 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1728 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1729 | else |
bba74b36 | 1730 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1731 | |
1732 | putpkt (rs->buf); | |
1733 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1734 | ||
1735 | switch (packet_ok (rs->buf, | |
1554e9be | 1736 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1737 | { |
1738 | case PACKET_OK: | |
1739 | if (strcmp (rs->buf, "1") == 0) | |
1740 | return 1; | |
1741 | break; | |
1742 | case PACKET_ERROR: | |
1743 | warning (_("Remote failure reply: %s"), rs->buf); | |
1744 | break; | |
1745 | case PACKET_UNKNOWN: | |
1746 | break; | |
1747 | } | |
1748 | ||
1749 | return 0; | |
1750 | } | |
1751 | ||
49c62f2e PA |
1752 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1753 | has been invented by GDB, instead of reported by the target. Since | |
1754 | we can be connected to a remote system before before knowing about | |
1755 | any inferior, mark the target with execution when we find the first | |
1756 | inferior. If ATTACHED is 1, then we had just attached to this | |
1757 | inferior. If it is 0, then we just created this inferior. If it | |
1758 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1759 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1760 | attempt to open this inferior's executable as the main executable | |
1761 | if no main executable is open already. */ | |
1941c569 PA |
1762 | |
1763 | static struct inferior * | |
1b6e6f5c GB |
1764 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1765 | int try_open_exec) | |
1941c569 | 1766 | { |
1941c569 PA |
1767 | struct inferior *inf; |
1768 | ||
0b16c5cf PA |
1769 | /* Check whether this process we're learning about is to be |
1770 | considered attached, or if is to be considered to have been | |
1771 | spawned by the stub. */ | |
1772 | if (attached == -1) | |
1773 | attached = remote_query_attached (pid); | |
1774 | ||
f5656ead | 1775 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1776 | { |
1777 | /* If the target shares code across all inferiors, then every | |
1778 | attach adds a new inferior. */ | |
1779 | inf = add_inferior (pid); | |
1780 | ||
1781 | /* ... and every inferior is bound to the same program space. | |
1782 | However, each inferior may still have its own address | |
1783 | space. */ | |
1784 | inf->aspace = maybe_new_address_space (); | |
1785 | inf->pspace = current_program_space; | |
1786 | } | |
1787 | else | |
1788 | { | |
1789 | /* In the traditional debugging scenario, there's a 1-1 match | |
1790 | between program/address spaces. We simply bind the inferior | |
1791 | to the program space's address space. */ | |
1792 | inf = current_inferior (); | |
1793 | inferior_appeared (inf, pid); | |
1794 | } | |
1941c569 | 1795 | |
0b16c5cf | 1796 | inf->attach_flag = attached; |
49c62f2e | 1797 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1798 | |
1b6e6f5c GB |
1799 | /* If no main executable is currently open then attempt to |
1800 | open the file that was executed to create this inferior. */ | |
835205d0 | 1801 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1802 | exec_file_locate_attach (pid, 1); |
1803 | ||
1941c569 PA |
1804 | return inf; |
1805 | } | |
1806 | ||
1807 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1808 | according to RUNNING. */ | |
1809 | ||
c906108c | 1810 | static void |
0d5b594f | 1811 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 1812 | { |
b7ea362b PA |
1813 | struct remote_state *rs = get_remote_state (); |
1814 | ||
1815 | /* GDB historically didn't pull threads in the initial connection | |
1816 | setup. If the remote target doesn't even have a concept of | |
1817 | threads (e.g., a bare-metal target), even if internally we | |
1818 | consider that a single-threaded target, mentioning a new thread | |
1819 | might be confusing to the user. Be silent then, preserving the | |
1820 | age old behavior. */ | |
1821 | if (rs->starting_up) | |
1822 | add_thread_silent (ptid); | |
1823 | else | |
1824 | add_thread (ptid); | |
1941c569 | 1825 | |
0d5b594f | 1826 | set_executing (ptid, executing); |
1941c569 PA |
1827 | set_running (ptid, running); |
1828 | } | |
1829 | ||
1830 | /* Come here when we learn about a thread id from the remote target. | |
1831 | It may be the first time we hear about such thread, so take the | |
1832 | opportunity to add it to GDB's thread list. In case this is the | |
1833 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
1834 | GDB's inferior list as well. EXECUTING indicates whether the |
1835 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
1836 | |
1837 | static void | |
0d5b594f | 1838 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 1839 | { |
0d5b594f PA |
1840 | /* In non-stop mode, we assume new found threads are (externally) |
1841 | running until proven otherwise with a stop reply. In all-stop, | |
1842 | we can only get here if all threads are stopped. */ | |
1843 | int running = target_is_non_stop_p () ? 1 : 0; | |
1844 | ||
c906108c SS |
1845 | /* If this is a new thread, add it to GDB's thread list. |
1846 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1847 | |
1848 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1849 | { | |
1850 | /* We're seeing an event on a thread id we knew had exited. | |
1851 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 1852 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
1853 | return; |
1854 | } | |
1855 | ||
79d7f229 | 1856 | if (!in_thread_list (currthread)) |
c0a2216e | 1857 | { |
1941c569 | 1858 | struct inferior *inf = NULL; |
bad34192 | 1859 | int pid = ptid_get_pid (currthread); |
1941c569 | 1860 | |
bad34192 PA |
1861 | if (ptid_is_pid (inferior_ptid) |
1862 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1863 | { |
1864 | /* inferior_ptid has no thread member yet. This can happen | |
1865 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1866 | stub doesn't support qC. This is the first stop reported | |
1867 | after an attach, so this is the main thread. Update the | |
1868 | ptid in the thread list. */ | |
bad34192 PA |
1869 | if (in_thread_list (pid_to_ptid (pid))) |
1870 | thread_change_ptid (inferior_ptid, currthread); | |
1871 | else | |
1872 | { | |
0d5b594f | 1873 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
1874 | inferior_ptid = currthread; |
1875 | } | |
dc146f7c | 1876 | return; |
c0a2216e | 1877 | } |
82f73884 PA |
1878 | |
1879 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1880 | { |
1881 | /* inferior_ptid is not set yet. This can happen with the | |
1882 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1883 | doesn't support qC. This is the first stop reported | |
1884 | after an attach, so this is the main thread. Update the | |
1885 | ptid in the thread list. */ | |
dc146f7c | 1886 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1887 | return; |
c0a2216e | 1888 | } |
82f73884 | 1889 | |
29c87f7f PA |
1890 | /* When connecting to a target remote, or to a target |
1891 | extended-remote which already was debugging an inferior, we | |
1892 | may not know about it yet. Add it before adding its child | |
1893 | thread, so notifications are emitted in a sensible order. */ | |
1894 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1895 | { |
1896 | struct remote_state *rs = get_remote_state (); | |
1897 | int fake_pid_p = !remote_multi_process_p (rs); | |
1898 | ||
1899 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1900 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1901 | } |
29c87f7f | 1902 | |
82f73884 | 1903 | /* This is really a new thread. Add it. */ |
0d5b594f | 1904 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
1905 | |
1906 | /* If we found a new inferior, let the common code do whatever | |
1907 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1908 | breakpoints), unless we're just setting up an all-stop |
1909 | connection. */ | |
1941c569 | 1910 | if (inf != NULL) |
b7ea362b PA |
1911 | { |
1912 | struct remote_state *rs = get_remote_state (); | |
1913 | ||
6efcd9a8 | 1914 | if (!rs->starting_up) |
0d5b594f | 1915 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 1916 | } |
c0a2216e | 1917 | } |
c906108c SS |
1918 | } |
1919 | ||
dc146f7c VP |
1920 | /* Return the private thread data, creating it if necessary. */ |
1921 | ||
70221824 | 1922 | static struct private_thread_info * |
dc146f7c VP |
1923 | demand_private_info (ptid_t ptid) |
1924 | { | |
1925 | struct thread_info *info = find_thread_ptid (ptid); | |
1926 | ||
1927 | gdb_assert (info); | |
1928 | ||
fe978cb0 | 1929 | if (!info->priv) |
dc146f7c | 1930 | { |
8d749320 | 1931 | info->priv = XNEW (struct private_thread_info); |
dc146f7c | 1932 | info->private_dtor = free_private_thread_info; |
fe978cb0 | 1933 | info->priv->core = -1; |
8020350c DB |
1934 | info->priv->extra = NULL; |
1935 | info->priv->name = NULL; | |
dc146f7c VP |
1936 | } |
1937 | ||
fe978cb0 | 1938 | return info->priv; |
dc146f7c VP |
1939 | } |
1940 | ||
74531fed PA |
1941 | /* Call this function as a result of |
1942 | 1) A halt indication (T packet) containing a thread id | |
1943 | 2) A direct query of currthread | |
0df8b418 | 1944 | 3) Successful execution of set thread */ |
74531fed PA |
1945 | |
1946 | static void | |
47f8a51d | 1947 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1948 | { |
47f8a51d | 1949 | rs->general_thread = currthread; |
74531fed PA |
1950 | } |
1951 | ||
89be2091 DJ |
1952 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1953 | it can simply pass through to the inferior without reporting. */ | |
1954 | ||
1955 | static void | |
94bedb42 TT |
1956 | remote_pass_signals (struct target_ops *self, |
1957 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1958 | { |
4082afcc | 1959 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1960 | { |
1961 | char *pass_packet, *p; | |
89be2091 | 1962 | int count = 0, i; |
747dc59d | 1963 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1964 | |
1965 | gdb_assert (numsigs < 256); | |
1966 | for (i = 0; i < numsigs; i++) | |
1967 | { | |
2455069d | 1968 | if (pass_signals[i]) |
89be2091 DJ |
1969 | count++; |
1970 | } | |
224c3ddb | 1971 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
1972 | strcpy (pass_packet, "QPassSignals:"); |
1973 | p = pass_packet + strlen (pass_packet); | |
1974 | for (i = 0; i < numsigs; i++) | |
1975 | { | |
2455069d | 1976 | if (pass_signals[i]) |
89be2091 DJ |
1977 | { |
1978 | if (i >= 16) | |
1979 | *p++ = tohex (i >> 4); | |
1980 | *p++ = tohex (i & 15); | |
1981 | if (count) | |
1982 | *p++ = ';'; | |
1983 | else | |
1984 | break; | |
1985 | count--; | |
1986 | } | |
1987 | } | |
1988 | *p = 0; | |
747dc59d | 1989 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1990 | { |
89be2091 DJ |
1991 | putpkt (pass_packet); |
1992 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1993 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1994 | if (rs->last_pass_packet) |
1995 | xfree (rs->last_pass_packet); | |
1996 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1997 | } |
1998 | else | |
1999 | xfree (pass_packet); | |
2000 | } | |
2001 | } | |
2002 | ||
82075af2 JS |
2003 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2004 | to report syscalls to GDB. */ | |
2005 | ||
2006 | static int | |
2007 | remote_set_syscall_catchpoint (struct target_ops *self, | |
2008 | int pid, int needed, int any_count, | |
2009 | int table_size, int *table) | |
2010 | { | |
2011 | char *catch_packet; | |
2012 | enum packet_result result; | |
2013 | int n_sysno = 0; | |
2014 | ||
2015 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2016 | { | |
2017 | /* Not supported. */ | |
2018 | return 1; | |
2019 | } | |
2020 | ||
2021 | if (needed && !any_count) | |
2022 | { | |
2023 | int i; | |
2024 | ||
2025 | /* Count how many syscalls are to be caught (table[sysno] != 0). */ | |
2026 | for (i = 0; i < table_size; i++) | |
2027 | { | |
2028 | if (table[i] != 0) | |
2029 | n_sysno++; | |
2030 | } | |
2031 | } | |
2032 | ||
2033 | if (remote_debug) | |
2034 | { | |
2035 | fprintf_unfiltered (gdb_stdlog, | |
2036 | "remote_set_syscall_catchpoint " | |
2037 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2038 | pid, needed, any_count, n_sysno); | |
2039 | } | |
2040 | ||
2041 | if (needed) | |
2042 | { | |
2043 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2044 | characters for a sysno. If the resulting packet size is too | |
2045 | big, fallback on the non-selective packet. */ | |
2046 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
2047 | ||
c0518081 | 2048 | catch_packet = (char *) xmalloc (maxpktsz); |
82075af2 JS |
2049 | strcpy (catch_packet, "QCatchSyscalls:1"); |
2050 | if (!any_count) | |
2051 | { | |
2052 | int i; | |
2053 | char *p; | |
2054 | ||
2055 | p = catch_packet; | |
2056 | p += strlen (p); | |
2057 | ||
2058 | /* Add in catch_packet each syscall to be caught (table[i] != 0). */ | |
2059 | for (i = 0; i < table_size; i++) | |
2060 | { | |
2061 | if (table[i] != 0) | |
2062 | p += xsnprintf (p, catch_packet + maxpktsz - p, ";%x", i); | |
2063 | } | |
2064 | } | |
2065 | if (strlen (catch_packet) > get_remote_packet_size ()) | |
2066 | { | |
2067 | /* catch_packet too big. Fallback to less efficient | |
2068 | non selective mode, with GDB doing the filtering. */ | |
2069 | catch_packet[sizeof ("QCatchSyscalls:1") - 1] = 0; | |
2070 | } | |
2071 | } | |
2072 | else | |
2073 | catch_packet = xstrdup ("QCatchSyscalls:0"); | |
2074 | ||
2075 | { | |
2076 | struct cleanup *old_chain = make_cleanup (xfree, catch_packet); | |
2077 | struct remote_state *rs = get_remote_state (); | |
2078 | ||
2079 | putpkt (catch_packet); | |
2080 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2081 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2082 | do_cleanups (old_chain); | |
2083 | if (result == PACKET_OK) | |
2084 | return 0; | |
2085 | else | |
2086 | return -1; | |
2087 | } | |
2088 | } | |
2089 | ||
9b224c5e PA |
2090 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2091 | signals it should pass through to the inferior when detaching. */ | |
2092 | ||
2093 | static void | |
daf5e9b6 TT |
2094 | remote_program_signals (struct target_ops *self, |
2095 | int numsigs, unsigned char *signals) | |
9b224c5e | 2096 | { |
4082afcc | 2097 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2098 | { |
2099 | char *packet, *p; | |
2100 | int count = 0, i; | |
5e4a05c4 | 2101 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2102 | |
2103 | gdb_assert (numsigs < 256); | |
2104 | for (i = 0; i < numsigs; i++) | |
2105 | { | |
2106 | if (signals[i]) | |
2107 | count++; | |
2108 | } | |
224c3ddb | 2109 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2110 | strcpy (packet, "QProgramSignals:"); |
2111 | p = packet + strlen (packet); | |
2112 | for (i = 0; i < numsigs; i++) | |
2113 | { | |
2114 | if (signal_pass_state (i)) | |
2115 | { | |
2116 | if (i >= 16) | |
2117 | *p++ = tohex (i >> 4); | |
2118 | *p++ = tohex (i & 15); | |
2119 | if (count) | |
2120 | *p++ = ';'; | |
2121 | else | |
2122 | break; | |
2123 | count--; | |
2124 | } | |
2125 | } | |
2126 | *p = 0; | |
5e4a05c4 TT |
2127 | if (!rs->last_program_signals_packet |
2128 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2129 | { |
9b224c5e PA |
2130 | putpkt (packet); |
2131 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2132 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2133 | xfree (rs->last_program_signals_packet); |
2134 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2135 | } |
2136 | else | |
2137 | xfree (packet); | |
2138 | } | |
2139 | } | |
2140 | ||
79d7f229 PA |
2141 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2142 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2143 | thread. If GEN is set, set the general thread, if not, then set | |
2144 | the step/continue thread. */ | |
c906108c | 2145 | static void |
79d7f229 | 2146 | set_thread (struct ptid ptid, int gen) |
c906108c | 2147 | { |
d01949b6 | 2148 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2149 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2150 | char *buf = rs->buf; |
79d7f229 | 2151 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2152 | |
79d7f229 | 2153 | if (ptid_equal (state, ptid)) |
c906108c SS |
2154 | return; |
2155 | ||
79d7f229 PA |
2156 | *buf++ = 'H'; |
2157 | *buf++ = gen ? 'g' : 'c'; | |
2158 | if (ptid_equal (ptid, magic_null_ptid)) | |
2159 | xsnprintf (buf, endbuf - buf, "0"); | |
2160 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2161 | xsnprintf (buf, endbuf - buf, "0"); | |
2162 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2163 | xsnprintf (buf, endbuf - buf, "-1"); | |
2164 | else | |
82f73884 | 2165 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2166 | putpkt (rs->buf); |
6d820c5c | 2167 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2168 | if (gen) |
47f8a51d | 2169 | rs->general_thread = ptid; |
c906108c | 2170 | else |
47f8a51d | 2171 | rs->continue_thread = ptid; |
c906108c | 2172 | } |
79d7f229 PA |
2173 | |
2174 | static void | |
2175 | set_general_thread (struct ptid ptid) | |
2176 | { | |
2177 | set_thread (ptid, 1); | |
2178 | } | |
2179 | ||
2180 | static void | |
2181 | set_continue_thread (struct ptid ptid) | |
2182 | { | |
2183 | set_thread (ptid, 0); | |
2184 | } | |
2185 | ||
3c9c4b83 PA |
2186 | /* Change the remote current process. Which thread within the process |
2187 | ends up selected isn't important, as long as it is the same process | |
2188 | as what INFERIOR_PTID points to. | |
2189 | ||
2190 | This comes from that fact that there is no explicit notion of | |
2191 | "selected process" in the protocol. The selected process for | |
2192 | general operations is the process the selected general thread | |
2193 | belongs to. */ | |
2194 | ||
2195 | static void | |
2196 | set_general_process (void) | |
2197 | { | |
2198 | struct remote_state *rs = get_remote_state (); | |
2199 | ||
2200 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2201 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2202 | return; |
2203 | ||
2204 | /* We only need to change the remote current thread if it's pointing | |
2205 | at some other process. */ | |
47f8a51d | 2206 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2207 | set_general_thread (inferior_ptid); |
2208 | } | |
2209 | ||
c906108c | 2210 | \f |
7d1a114c PA |
2211 | /* Return nonzero if this is the main thread that we made up ourselves |
2212 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2213 | |
2214 | static int | |
7d1a114c | 2215 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2216 | { |
c0a2216e PA |
2217 | if (ptid_equal (ptid, magic_null_ptid)) |
2218 | /* The main thread is always alive. */ | |
2219 | return 1; | |
2220 | ||
ba348170 | 2221 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2222 | /* The main thread is always alive. This can happen after a |
2223 | vAttach, if the remote side doesn't support | |
2224 | multi-threading. */ | |
2225 | return 1; | |
2226 | ||
7d1a114c PA |
2227 | return 0; |
2228 | } | |
2229 | ||
2230 | /* Return nonzero if the thread PTID is still alive on the remote | |
2231 | system. */ | |
2232 | ||
2233 | static int | |
2234 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2235 | { | |
2236 | struct remote_state *rs = get_remote_state (); | |
2237 | char *p, *endp; | |
2238 | ||
2239 | /* Check if this is a thread that we made up ourselves to model | |
2240 | non-threaded targets as single-threaded. */ | |
2241 | if (remote_thread_always_alive (ops, ptid)) | |
2242 | return 1; | |
2243 | ||
82f73884 PA |
2244 | p = rs->buf; |
2245 | endp = rs->buf + get_remote_packet_size (); | |
2246 | ||
2247 | *p++ = 'T'; | |
2248 | write_ptid (p, endp, ptid); | |
2249 | ||
2e9f7625 | 2250 | putpkt (rs->buf); |
6d820c5c | 2251 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2252 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2253 | } |
2254 | ||
79efa585 SM |
2255 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2256 | The thread_info object owns the memory for the name. */ | |
2257 | ||
2258 | static const char * | |
2259 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2260 | { | |
2261 | if (info->priv != NULL) | |
2262 | return info->priv->name; | |
2263 | ||
2264 | return NULL; | |
2265 | } | |
2266 | ||
c906108c SS |
2267 | /* About these extended threadlist and threadinfo packets. They are |
2268 | variable length packets but, the fields within them are often fixed | |
2269 | length. They are redundent enough to send over UDP as is the | |
2270 | remote protocol in general. There is a matching unit test module | |
2271 | in libstub. */ | |
2272 | ||
23860348 | 2273 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2274 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2275 | changable. */ |
cce74817 JM |
2276 | |
2277 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2278 | Plan to fix this. */ |
cce74817 | 2279 | |
23860348 | 2280 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2281 | |
9d1f7ab2 | 2282 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2283 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2284 | |
2285 | struct gdb_ext_thread_info | |
c5aa993b | 2286 | { |
23860348 | 2287 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2288 | int active; /* Has state interesting to GDB? |
23860348 | 2289 | regs, stack. */ |
2bc416ba | 2290 | char display[256]; /* Brief state display, name, |
cedea757 | 2291 | blocked/suspended. */ |
23860348 | 2292 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2293 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2294 | whatever. */ |
c5aa993b | 2295 | }; |
cce74817 JM |
2296 | |
2297 | /* The volume of remote transfers can be limited by submitting | |
2298 | a mask containing bits specifying the desired information. | |
2299 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2300 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2301 | |
2302 | #define TAG_THREADID 1 | |
2303 | #define TAG_EXISTS 2 | |
2304 | #define TAG_DISPLAY 4 | |
2305 | #define TAG_THREADNAME 8 | |
c5aa993b | 2306 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2307 | |
23860348 | 2308 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2309 | |
a14ed312 | 2310 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2311 | |
a14ed312 | 2312 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2313 | |
a14ed312 | 2314 | static char *pack_int (char *buf, int value); |
cce74817 | 2315 | |
a14ed312 | 2316 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2317 | |
a14ed312 | 2318 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2319 | |
23860348 | 2320 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2321 | |
23860348 | 2322 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2323 | |
23860348 | 2324 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2325 | |
23860348 | 2326 | static int threadref_to_int (threadref *ref); |
cce74817 | 2327 | |
23860348 | 2328 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2329 | |
23860348 | 2330 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2331 | |
2bc416ba | 2332 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2333 | threadref *id); |
cce74817 | 2334 | |
a14ed312 | 2335 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2336 | threadref *expectedref, |
a14ed312 KB |
2337 | struct gdb_ext_thread_info |
2338 | *info); | |
cce74817 JM |
2339 | |
2340 | ||
2bc416ba | 2341 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2342 | int fieldset, /*TAG mask */ |
a14ed312 | 2343 | struct gdb_ext_thread_info *info); |
cce74817 | 2344 | |
a14ed312 KB |
2345 | static char *pack_threadlist_request (char *pkt, int startflag, |
2346 | int threadcount, | |
23860348 | 2347 | threadref *nextthread); |
cce74817 | 2348 | |
a14ed312 KB |
2349 | static int parse_threadlist_response (char *pkt, |
2350 | int result_limit, | |
23860348 | 2351 | threadref *original_echo, |
2bc416ba | 2352 | threadref *resultlist, |
23860348 | 2353 | int *doneflag); |
cce74817 | 2354 | |
a14ed312 | 2355 | static int remote_get_threadlist (int startflag, |
23860348 | 2356 | threadref *nextthread, |
a14ed312 KB |
2357 | int result_limit, |
2358 | int *done, | |
2bc416ba | 2359 | int *result_count, |
23860348 | 2360 | threadref *threadlist); |
cce74817 | 2361 | |
23860348 | 2362 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2363 | |
a14ed312 KB |
2364 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2365 | void *context, int looplimit); | |
cce74817 | 2366 | |
23860348 | 2367 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2368 | |
82f73884 PA |
2369 | |
2370 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2371 | buffer we're allowed to write to. Returns | |
2372 | BUF+CHARACTERS_WRITTEN. */ | |
2373 | ||
2374 | static char * | |
2375 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2376 | { | |
2377 | int pid, tid; | |
2378 | struct remote_state *rs = get_remote_state (); | |
2379 | ||
2380 | if (remote_multi_process_p (rs)) | |
2381 | { | |
2382 | pid = ptid_get_pid (ptid); | |
2383 | if (pid < 0) | |
2384 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2385 | else | |
2386 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2387 | } | |
ba348170 | 2388 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2389 | if (tid < 0) |
2390 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2391 | else | |
2392 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2393 | ||
2394 | return buf; | |
2395 | } | |
2396 | ||
2397 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2398 | passed the last parsed char. Returns null_ptid on error. */ | |
2399 | ||
2400 | static ptid_t | |
2401 | read_ptid (char *buf, char **obuf) | |
2402 | { | |
2403 | char *p = buf; | |
2404 | char *pp; | |
2405 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2406 | |
2407 | if (*p == 'p') | |
2408 | { | |
2409 | /* Multi-process ptid. */ | |
2410 | pp = unpack_varlen_hex (p + 1, &pid); | |
2411 | if (*pp != '.') | |
b37520b6 | 2412 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2413 | |
2414 | p = pp; | |
2415 | pp = unpack_varlen_hex (p + 1, &tid); | |
2416 | if (obuf) | |
2417 | *obuf = pp; | |
ba348170 | 2418 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2419 | } |
2420 | ||
2421 | /* No multi-process. Just a tid. */ | |
2422 | pp = unpack_varlen_hex (p, &tid); | |
2423 | ||
c9f35b34 KB |
2424 | /* Return null_ptid when no thread id is found. */ |
2425 | if (p == pp) | |
2426 | { | |
2427 | if (obuf) | |
2428 | *obuf = pp; | |
2429 | return null_ptid; | |
2430 | } | |
2431 | ||
82f73884 | 2432 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2433 | what's in inferior_ptid, unless it's null at this point. If so, |
2434 | then since there's no way to know the pid of the reported | |
2435 | threads, use the magic number. */ | |
2436 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2437 | pid = ptid_get_pid (magic_null_ptid); | |
2438 | else | |
2439 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2440 | |
2441 | if (obuf) | |
2442 | *obuf = pp; | |
ba348170 | 2443 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2444 | } |
2445 | ||
c906108c | 2446 | static int |
fba45db2 | 2447 | stubhex (int ch) |
c906108c SS |
2448 | { |
2449 | if (ch >= 'a' && ch <= 'f') | |
2450 | return ch - 'a' + 10; | |
2451 | if (ch >= '0' && ch <= '9') | |
2452 | return ch - '0'; | |
2453 | if (ch >= 'A' && ch <= 'F') | |
2454 | return ch - 'A' + 10; | |
2455 | return -1; | |
2456 | } | |
2457 | ||
2458 | static int | |
fba45db2 | 2459 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2460 | { |
2461 | int nibble; | |
2462 | int retval = 0; | |
2463 | ||
2464 | while (fieldlength) | |
2465 | { | |
2466 | nibble = stubhex (*buff++); | |
2467 | retval |= nibble; | |
2468 | fieldlength--; | |
2469 | if (fieldlength) | |
2470 | retval = retval << 4; | |
2471 | } | |
2472 | return retval; | |
2473 | } | |
2474 | ||
c906108c | 2475 | static char * |
fba45db2 | 2476 | unpack_nibble (char *buf, int *val) |
c906108c | 2477 | { |
b7589f7d | 2478 | *val = fromhex (*buf++); |
c906108c SS |
2479 | return buf; |
2480 | } | |
2481 | ||
c906108c | 2482 | static char * |
fba45db2 | 2483 | unpack_byte (char *buf, int *value) |
c906108c SS |
2484 | { |
2485 | *value = stub_unpack_int (buf, 2); | |
2486 | return buf + 2; | |
2487 | } | |
2488 | ||
2489 | static char * | |
fba45db2 | 2490 | pack_int (char *buf, int value) |
c906108c SS |
2491 | { |
2492 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2493 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2494 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2495 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2496 | return buf; | |
2497 | } | |
2498 | ||
2499 | static char * | |
fba45db2 | 2500 | unpack_int (char *buf, int *value) |
c906108c SS |
2501 | { |
2502 | *value = stub_unpack_int (buf, 8); | |
2503 | return buf + 8; | |
2504 | } | |
2505 | ||
23860348 | 2506 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2507 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2508 | |
2509 | static char * | |
fba45db2 | 2510 | pack_string (char *pkt, char *string) |
c906108c SS |
2511 | { |
2512 | char ch; | |
2513 | int len; | |
2514 | ||
2515 | len = strlen (string); | |
2516 | if (len > 200) | |
23860348 | 2517 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2518 | pkt = pack_hex_byte (pkt, len); |
2519 | while (len-- > 0) | |
2520 | { | |
2521 | ch = *string++; | |
2522 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2523 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2524 | *pkt++ = ch; |
2525 | } | |
2526 | return pkt; | |
2527 | } | |
2528 | #endif /* 0 (unused) */ | |
2529 | ||
2530 | static char * | |
fba45db2 | 2531 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2532 | { |
2533 | while (length--) | |
2534 | *dest++ = *src++; | |
2535 | *dest = '\0'; | |
2536 | return src; | |
2537 | } | |
2538 | ||
2539 | static char * | |
fba45db2 | 2540 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2541 | { |
2542 | char *limit; | |
2543 | unsigned char *altid; | |
2544 | ||
2545 | altid = (unsigned char *) id; | |
2546 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2547 | while (pkt < limit) | |
2548 | pkt = pack_hex_byte (pkt, *altid++); | |
2549 | return pkt; | |
2550 | } | |
2551 | ||
2552 | ||
2553 | static char * | |
fba45db2 | 2554 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2555 | { |
2556 | char *altref; | |
2557 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2558 | int x, y; | |
2559 | ||
2560 | altref = (char *) id; | |
2561 | ||
2562 | while (inbuf < limit) | |
2563 | { | |
2564 | x = stubhex (*inbuf++); | |
2565 | y = stubhex (*inbuf++); | |
2566 | *altref++ = (x << 4) | y; | |
2567 | } | |
2568 | return inbuf; | |
2569 | } | |
2570 | ||
2571 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2572 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2573 | to use 64bit thread references internally. This is an adapter |
2574 | function. */ | |
2575 | ||
2576 | void | |
fba45db2 | 2577 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2578 | { |
2579 | unsigned char *scan; | |
2580 | ||
2581 | scan = (unsigned char *) id; | |
2582 | { | |
2583 | int i = 4; | |
2584 | while (i--) | |
2585 | *scan++ = 0; | |
2586 | } | |
2587 | *scan++ = (value >> 24) & 0xff; | |
2588 | *scan++ = (value >> 16) & 0xff; | |
2589 | *scan++ = (value >> 8) & 0xff; | |
2590 | *scan++ = (value & 0xff); | |
2591 | } | |
2592 | ||
2593 | static int | |
fba45db2 | 2594 | threadref_to_int (threadref *ref) |
c906108c SS |
2595 | { |
2596 | int i, value = 0; | |
2597 | unsigned char *scan; | |
2598 | ||
cfd77fa1 | 2599 | scan = *ref; |
c906108c SS |
2600 | scan += 4; |
2601 | i = 4; | |
2602 | while (i-- > 0) | |
2603 | value = (value << 8) | ((*scan++) & 0xff); | |
2604 | return value; | |
2605 | } | |
2606 | ||
2607 | static void | |
fba45db2 | 2608 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2609 | { |
2610 | int i; | |
2611 | unsigned char *csrc, *cdest; | |
2612 | ||
2613 | csrc = (unsigned char *) src; | |
2614 | cdest = (unsigned char *) dest; | |
2615 | i = 8; | |
2616 | while (i--) | |
2617 | *cdest++ = *csrc++; | |
2618 | } | |
2619 | ||
2620 | static int | |
fba45db2 | 2621 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2622 | { |
23860348 | 2623 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2624 | #if 0 |
2625 | unsigned char *srcp, *destp; | |
2626 | int i, result; | |
2627 | srcp = (char *) src; | |
2628 | destp = (char *) dest; | |
2629 | ||
2630 | result = 1; | |
2631 | while (i-- > 0) | |
2632 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2633 | return result; | |
2634 | #endif | |
2635 | return 1; | |
2636 | } | |
2637 | ||
2638 | /* | |
c5aa993b JM |
2639 | threadid:1, # always request threadid |
2640 | context_exists:2, | |
2641 | display:4, | |
2642 | unique_name:8, | |
2643 | more_display:16 | |
2644 | */ | |
c906108c SS |
2645 | |
2646 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2647 | ||
2648 | static char * | |
fba45db2 | 2649 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2650 | { |
23860348 MS |
2651 | *pkt++ = 'q'; /* Info Query */ |
2652 | *pkt++ = 'P'; /* process or thread info */ | |
2653 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2654 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2655 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2656 | return pkt; |
2657 | } | |
2658 | ||
23860348 | 2659 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2660 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2661 | add more fields as time goes by. */ |
c906108c | 2662 | |
23860348 | 2663 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2664 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2665 | fetch registers and its stack? */ |
c5aa993b | 2666 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2667 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2668 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2669 | the process. */ |
c906108c SS |
2670 | |
2671 | static int | |
fba45db2 KB |
2672 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2673 | struct gdb_ext_thread_info *info) | |
c906108c | 2674 | { |
d01949b6 | 2675 | struct remote_state *rs = get_remote_state (); |
c906108c | 2676 | int mask, length; |
cfd77fa1 | 2677 | int tag; |
c906108c | 2678 | threadref ref; |
6d820c5c | 2679 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2680 | int retval = 1; |
2681 | ||
23860348 | 2682 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2683 | info->active = 0; |
2684 | info->display[0] = '\0'; | |
2685 | info->shortname[0] = '\0'; | |
2686 | info->more_display[0] = '\0'; | |
2687 | ||
23860348 MS |
2688 | /* Assume the characters indicating the packet type have been |
2689 | stripped. */ | |
c906108c SS |
2690 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2691 | pkt = unpack_threadid (pkt, &ref); | |
2692 | ||
2693 | if (mask == 0) | |
8a3fe4f8 | 2694 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2695 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2696 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2697 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2698 | return 0; |
2699 | } | |
2700 | copy_threadref (&info->threadid, &ref); | |
2701 | ||
23860348 | 2702 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2703 | |
23860348 MS |
2704 | /* Packets are terminated with nulls. */ |
2705 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2706 | { |
2707 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2708 | pkt = unpack_byte (pkt, &length); /* length */ |
2709 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2710 | { |
8a3fe4f8 | 2711 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2712 | retval = 0; |
2713 | break; | |
2714 | } | |
2715 | if (tag == TAG_THREADID) | |
2716 | { | |
2717 | if (length != 16) | |
2718 | { | |
8a3fe4f8 | 2719 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2720 | retval = 0; |
2721 | break; | |
2722 | } | |
2723 | pkt = unpack_threadid (pkt, &ref); | |
2724 | mask = mask & ~TAG_THREADID; | |
2725 | continue; | |
2726 | } | |
2727 | if (tag == TAG_EXISTS) | |
2728 | { | |
2729 | info->active = stub_unpack_int (pkt, length); | |
2730 | pkt += length; | |
2731 | mask = mask & ~(TAG_EXISTS); | |
2732 | if (length > 8) | |
2733 | { | |
8a3fe4f8 | 2734 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2735 | retval = 0; |
2736 | break; | |
2737 | } | |
2738 | continue; | |
2739 | } | |
2740 | if (tag == TAG_THREADNAME) | |
2741 | { | |
2742 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2743 | mask = mask & ~TAG_THREADNAME; | |
2744 | continue; | |
2745 | } | |
2746 | if (tag == TAG_DISPLAY) | |
2747 | { | |
2748 | pkt = unpack_string (pkt, &info->display[0], length); | |
2749 | mask = mask & ~TAG_DISPLAY; | |
2750 | continue; | |
2751 | } | |
2752 | if (tag == TAG_MOREDISPLAY) | |
2753 | { | |
2754 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2755 | mask = mask & ~TAG_MOREDISPLAY; | |
2756 | continue; | |
2757 | } | |
8a3fe4f8 | 2758 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2759 | break; /* Not a tag we know about. */ |
c906108c SS |
2760 | } |
2761 | return retval; | |
2762 | } | |
2763 | ||
2764 | static int | |
fba45db2 KB |
2765 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2766 | struct gdb_ext_thread_info *info) | |
c906108c | 2767 | { |
d01949b6 | 2768 | struct remote_state *rs = get_remote_state (); |
c906108c | 2769 | int result; |
c906108c | 2770 | |
2e9f7625 DJ |
2771 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2772 | putpkt (rs->buf); | |
6d820c5c | 2773 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2774 | |
2775 | if (rs->buf[0] == '\0') | |
2776 | return 0; | |
2777 | ||
2e9f7625 | 2778 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2779 | threadid, info); |
c906108c SS |
2780 | return result; |
2781 | } | |
2782 | ||
c906108c SS |
2783 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2784 | ||
2785 | static char * | |
fba45db2 KB |
2786 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2787 | threadref *nextthread) | |
c906108c SS |
2788 | { |
2789 | *pkt++ = 'q'; /* info query packet */ | |
2790 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2791 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2792 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2793 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2794 | *pkt = '\0'; | |
2795 | return pkt; | |
2796 | } | |
2797 | ||
2798 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2799 | ||
2800 | static int | |
fba45db2 KB |
2801 | parse_threadlist_response (char *pkt, int result_limit, |
2802 | threadref *original_echo, threadref *resultlist, | |
2803 | int *doneflag) | |
c906108c | 2804 | { |
d01949b6 | 2805 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2806 | char *limit; |
2807 | int count, resultcount, done; | |
2808 | ||
2809 | resultcount = 0; | |
2810 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2811 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2812 | /* done parse past here */ |
c906108c SS |
2813 | pkt = unpack_byte (pkt, &count); /* count field */ |
2814 | pkt = unpack_nibble (pkt, &done); | |
2815 | /* The first threadid is the argument threadid. */ | |
2816 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2817 | while ((count-- > 0) && (pkt < limit)) | |
2818 | { | |
2819 | pkt = unpack_threadid (pkt, resultlist++); | |
2820 | if (resultcount++ >= result_limit) | |
2821 | break; | |
2822 | } | |
2823 | if (doneflag) | |
2824 | *doneflag = done; | |
2825 | return resultcount; | |
2826 | } | |
2827 | ||
6dc54d91 PA |
2828 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2829 | qL packet is not supported, 0 on error and 1 on success. */ | |
2830 | ||
c906108c | 2831 | static int |
fba45db2 KB |
2832 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2833 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2834 | { |
d01949b6 | 2835 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2836 | int result = 1; |
2837 | ||
23860348 | 2838 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2839 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2840 | >= get_remote_packet_size ()) | |
ea9c271d | 2841 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2842 | |
6d820c5c DJ |
2843 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2844 | putpkt (rs->buf); | |
2845 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2846 | if (*rs->buf == '\0') |
6dc54d91 PA |
2847 | { |
2848 | /* Packet not supported. */ | |
2849 | return -1; | |
2850 | } | |
2851 | ||
2852 | *result_count = | |
2853 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2854 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2855 | |
0d031856 | 2856 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2857 | { |
23860348 MS |
2858 | /* FIXME: This is a good reason to drop the packet. */ |
2859 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2860 | /* Possabilities : |
2861 | retransmit immediatly - race conditions | |
2862 | retransmit after timeout - yes | |
2863 | exit | |
2864 | wait for packet, then exit | |
2865 | */ | |
8a3fe4f8 | 2866 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2867 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2868 | } |
2869 | if (*result_count <= 0) | |
2870 | { | |
2871 | if (*done != 1) | |
2872 | { | |
8a3fe4f8 | 2873 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2874 | result = 0; |
2875 | } | |
2876 | return result; /* break; */ | |
2877 | } | |
2878 | if (*result_count > result_limit) | |
2879 | { | |
2880 | *result_count = 0; | |
8a3fe4f8 | 2881 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2882 | return 0; |
2883 | } | |
2884 | return result; | |
2885 | } | |
2886 | ||
6dc54d91 PA |
2887 | /* Fetch the list of remote threads, with the qL packet, and call |
2888 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2889 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2890 | STEPFUNCTION returns false. If the packet is not supported, | |
2891 | returns -1. */ | |
c906108c | 2892 | |
c906108c | 2893 | static int |
fba45db2 KB |
2894 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2895 | int looplimit) | |
c906108c | 2896 | { |
0d031856 | 2897 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2898 | int done, i, result_count; |
2899 | int startflag = 1; | |
2900 | int result = 1; | |
2901 | int loopcount = 0; | |
c906108c SS |
2902 | |
2903 | done = 0; | |
2904 | while (!done) | |
2905 | { | |
2906 | if (loopcount++ > looplimit) | |
2907 | { | |
2908 | result = 0; | |
8a3fe4f8 | 2909 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2910 | break; |
2911 | } | |
6dc54d91 PA |
2912 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2913 | MAXTHREADLISTRESULTS, | |
2914 | &done, &result_count, | |
2915 | rs->resultthreadlist); | |
2916 | if (result <= 0) | |
2917 | break; | |
23860348 | 2918 | /* Clear for later iterations. */ |
c906108c SS |
2919 | startflag = 0; |
2920 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2921 | if (result_count >= 1) | |
0d031856 TT |
2922 | copy_threadref (&rs->nextthread, |
2923 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2924 | i = 0; |
2925 | while (result_count--) | |
6dc54d91 PA |
2926 | { |
2927 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2928 | { | |
2929 | result = 0; | |
2930 | break; | |
2931 | } | |
2932 | } | |
c906108c SS |
2933 | } |
2934 | return result; | |
2935 | } | |
2936 | ||
6dc54d91 PA |
2937 | /* A thread found on the remote target. */ |
2938 | ||
2939 | typedef struct thread_item | |
2940 | { | |
2941 | /* The thread's PTID. */ | |
2942 | ptid_t ptid; | |
2943 | ||
2944 | /* The thread's extra info. May be NULL. */ | |
2945 | char *extra; | |
2946 | ||
79efa585 SM |
2947 | /* The thread's name. May be NULL. */ |
2948 | char *name; | |
2949 | ||
6dc54d91 PA |
2950 | /* The core the thread was running on. -1 if not known. */ |
2951 | int core; | |
2952 | } thread_item_t; | |
2953 | DEF_VEC_O(thread_item_t); | |
2954 | ||
2955 | /* Context passed around to the various methods listing remote | |
2956 | threads. As new threads are found, they're added to the ITEMS | |
2957 | vector. */ | |
2958 | ||
2959 | struct threads_listing_context | |
2960 | { | |
2961 | /* The threads found on the remote target. */ | |
2962 | VEC (thread_item_t) *items; | |
2963 | }; | |
2964 | ||
80134cf5 PA |
2965 | /* Discard the contents of the constructed thread listing context. */ |
2966 | ||
2967 | static void | |
2968 | clear_threads_listing_context (void *p) | |
2969 | { | |
19ba03f4 SM |
2970 | struct threads_listing_context *context |
2971 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
2972 | int i; |
2973 | struct thread_item *item; | |
2974 | ||
2975 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
79efa585 SM |
2976 | { |
2977 | xfree (item->extra); | |
2978 | xfree (item->name); | |
2979 | } | |
80134cf5 PA |
2980 | |
2981 | VEC_free (thread_item_t, context->items); | |
2982 | } | |
2983 | ||
cbb8991c DB |
2984 | /* Remove the thread specified as the related_pid field of WS |
2985 | from the CONTEXT list. */ | |
2986 | ||
2987 | static void | |
2988 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2989 | struct threads_listing_context *context) | |
2990 | { | |
2991 | struct thread_item *item; | |
2992 | int i; | |
2993 | ptid_t child_ptid = ws->value.related_pid; | |
2994 | ||
2995 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2996 | { | |
2997 | if (ptid_equal (item->ptid, child_ptid)) | |
2998 | { | |
2999 | VEC_ordered_remove (thread_item_t, context->items, i); | |
3000 | break; | |
3001 | } | |
3002 | } | |
3003 | } | |
3004 | ||
c906108c | 3005 | static int |
6dc54d91 | 3006 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3007 | { |
19ba03f4 SM |
3008 | struct threads_listing_context *context |
3009 | = (struct threads_listing_context *) data; | |
6dc54d91 | 3010 | struct thread_item item; |
79d7f229 | 3011 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 3012 | |
6dc54d91 PA |
3013 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
3014 | item.core = -1; | |
2e3b657e | 3015 | item.name = NULL; |
6dc54d91 PA |
3016 | item.extra = NULL; |
3017 | ||
3018 | VEC_safe_push (thread_item_t, context->items, &item); | |
3019 | ||
c906108c SS |
3020 | return 1; /* continue iterator */ |
3021 | } | |
3022 | ||
3023 | #define CRAZY_MAX_THREADS 1000 | |
3024 | ||
39f77062 KB |
3025 | static ptid_t |
3026 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3027 | { |
d01949b6 | 3028 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3029 | |
3030 | putpkt ("qC"); | |
6d820c5c | 3031 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3032 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
3033 | { |
3034 | char *obuf; | |
3035 | ptid_t result; | |
3036 | ||
3037 | result = read_ptid (&rs->buf[2], &obuf); | |
3038 | if (*obuf != '\0' && remote_debug) | |
3039 | fprintf_unfiltered (gdb_stdlog, | |
3040 | "warning: garbage in qC reply\n"); | |
3041 | ||
3042 | return result; | |
3043 | } | |
c906108c SS |
3044 | else |
3045 | return oldpid; | |
3046 | } | |
3047 | ||
6dc54d91 | 3048 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3049 | |
6dc54d91 PA |
3050 | static int |
3051 | remote_get_threads_with_ql (struct target_ops *ops, | |
3052 | struct threads_listing_context *context) | |
c906108c | 3053 | { |
6dc54d91 PA |
3054 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3055 | CRAZY_MAX_THREADS) >= 0) | |
3056 | return 1; | |
3057 | ||
3058 | return 0; | |
c906108c SS |
3059 | } |
3060 | ||
dc146f7c VP |
3061 | #if defined(HAVE_LIBEXPAT) |
3062 | ||
dc146f7c VP |
3063 | static void |
3064 | start_thread (struct gdb_xml_parser *parser, | |
3065 | const struct gdb_xml_element *element, | |
3066 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
3067 | { | |
19ba03f4 SM |
3068 | struct threads_listing_context *data |
3069 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3070 | |
3071 | struct thread_item item; | |
3072 | char *id; | |
3d2c1d41 | 3073 | struct gdb_xml_value *attr; |
dc146f7c | 3074 | |
19ba03f4 | 3075 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
3076 | item.ptid = read_ptid (id, NULL); |
3077 | ||
3d2c1d41 PA |
3078 | attr = xml_find_attribute (attributes, "core"); |
3079 | if (attr != NULL) | |
3080 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
3081 | else |
3082 | item.core = -1; | |
3083 | ||
79efa585 | 3084 | attr = xml_find_attribute (attributes, "name"); |
e1961661 | 3085 | item.name = attr != NULL ? xstrdup ((const char *) attr->value) : NULL; |
79efa585 | 3086 | |
dc146f7c VP |
3087 | item.extra = 0; |
3088 | ||
3089 | VEC_safe_push (thread_item_t, data->items, &item); | |
3090 | } | |
3091 | ||
3092 | static void | |
3093 | end_thread (struct gdb_xml_parser *parser, | |
3094 | const struct gdb_xml_element *element, | |
3095 | void *user_data, const char *body_text) | |
3096 | { | |
19ba03f4 SM |
3097 | struct threads_listing_context *data |
3098 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3099 | |
3100 | if (body_text && *body_text) | |
2ae2a0b7 | 3101 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
3102 | } |
3103 | ||
3104 | const struct gdb_xml_attribute thread_attributes[] = { | |
3105 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3106 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3107 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3108 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3109 | }; | |
3110 | ||
3111 | const struct gdb_xml_element thread_children[] = { | |
3112 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3113 | }; | |
3114 | ||
3115 | const struct gdb_xml_element threads_children[] = { | |
3116 | { "thread", thread_attributes, thread_children, | |
3117 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3118 | start_thread, end_thread }, | |
3119 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3120 | }; | |
3121 | ||
3122 | const struct gdb_xml_element threads_elements[] = { | |
3123 | { "threads", NULL, threads_children, | |
3124 | GDB_XML_EF_NONE, NULL, NULL }, | |
3125 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3126 | }; | |
3127 | ||
3128 | #endif | |
3129 | ||
6dc54d91 | 3130 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3131 | |
6dc54d91 PA |
3132 | static int |
3133 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3134 | struct threads_listing_context *context) | |
0f71a2f6 | 3135 | { |
dc146f7c | 3136 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3137 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3138 | { |
6dc54d91 | 3139 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 3140 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 3141 | |
6dc54d91 | 3142 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3143 | { |
6dc54d91 PA |
3144 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
3145 | threads_elements, xml, context); | |
dc146f7c VP |
3146 | } |
3147 | ||
3148 | do_cleanups (back_to); | |
6dc54d91 | 3149 | return 1; |
dc146f7c VP |
3150 | } |
3151 | #endif | |
3152 | ||
6dc54d91 PA |
3153 | return 0; |
3154 | } | |
3155 | ||
3156 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3157 | ||
3158 | static int | |
3159 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3160 | struct threads_listing_context *context) | |
3161 | { | |
3162 | struct remote_state *rs = get_remote_state (); | |
3163 | ||
b80fafe3 | 3164 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3165 | { |
6dc54d91 PA |
3166 | char *bufp; |
3167 | ||
9d1f7ab2 | 3168 | putpkt ("qfThreadInfo"); |
6d820c5c | 3169 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3170 | bufp = rs->buf; |
9d1f7ab2 | 3171 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3172 | { |
9d1f7ab2 MS |
3173 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3174 | { | |
3175 | do | |
3176 | { | |
6dc54d91 PA |
3177 | struct thread_item item; |
3178 | ||
3179 | item.ptid = read_ptid (bufp, &bufp); | |
3180 | item.core = -1; | |
2e3b657e | 3181 | item.name = NULL; |
6dc54d91 PA |
3182 | item.extra = NULL; |
3183 | ||
3184 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3185 | } |
3186 | while (*bufp++ == ','); /* comma-separated list */ | |
3187 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3188 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3189 | bufp = rs->buf; |
9d1f7ab2 | 3190 | } |
6dc54d91 PA |
3191 | return 1; |
3192 | } | |
3193 | else | |
3194 | { | |
3195 | /* Packet not recognized. */ | |
3196 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3197 | } |
3198 | } | |
3199 | ||
6dc54d91 PA |
3200 | return 0; |
3201 | } | |
3202 | ||
e8032dde | 3203 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3204 | targets. */ |
3205 | ||
3206 | static void | |
e8032dde | 3207 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 | 3208 | { |
6dc54d91 PA |
3209 | struct threads_listing_context context; |
3210 | struct cleanup *old_chain; | |
ab970af1 | 3211 | int got_list = 0; |
e8032dde | 3212 | |
6dc54d91 PA |
3213 | context.items = NULL; |
3214 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3215 | ||
3216 | /* We have a few different mechanisms to fetch the thread list. Try | |
3217 | them all, starting with the most preferred one first, falling | |
3218 | back to older methods. */ | |
3219 | if (remote_get_threads_with_qxfer (ops, &context) | |
3220 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3221 | || remote_get_threads_with_ql (ops, &context)) | |
3222 | { | |
3223 | int i; | |
3224 | struct thread_item *item; | |
ab970af1 PA |
3225 | struct thread_info *tp, *tmp; |
3226 | ||
3227 | got_list = 1; | |
3228 | ||
7d1a114c PA |
3229 | if (VEC_empty (thread_item_t, context.items) |
3230 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3231 | { | |
3232 | /* Some targets don't really support threads, but still | |
3233 | reply an (empty) thread list in response to the thread | |
3234 | listing packets, instead of replying "packet not | |
3235 | supported". Exit early so we don't delete the main | |
3236 | thread. */ | |
3237 | do_cleanups (old_chain); | |
3238 | return; | |
3239 | } | |
3240 | ||
ab970af1 PA |
3241 | /* CONTEXT now holds the current thread list on the remote |
3242 | target end. Delete GDB-side threads no longer found on the | |
3243 | target. */ | |
8a06aea7 | 3244 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3245 | { |
ab970af1 PA |
3246 | for (i = 0; |
3247 | VEC_iterate (thread_item_t, context.items, i, item); | |
3248 | ++i) | |
3249 | { | |
3250 | if (ptid_equal (item->ptid, tp->ptid)) | |
3251 | break; | |
3252 | } | |
3253 | ||
3254 | if (i == VEC_length (thread_item_t, context.items)) | |
3255 | { | |
3256 | /* Not found. */ | |
3257 | delete_thread (tp->ptid); | |
3258 | } | |
cbb8991c DB |
3259 | } |
3260 | ||
3261 | /* Remove any unreported fork child threads from CONTEXT so | |
3262 | that we don't interfere with follow fork, which is where | |
3263 | creation of such threads is handled. */ | |
3264 | remove_new_fork_children (&context); | |
74531fed | 3265 | |
ab970af1 | 3266 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3267 | for (i = 0; |
3268 | VEC_iterate (thread_item_t, context.items, i, item); | |
3269 | ++i) | |
3270 | { | |
3271 | if (!ptid_equal (item->ptid, null_ptid)) | |
3272 | { | |
3273 | struct private_thread_info *info; | |
3274 | /* In non-stop mode, we assume new found threads are | |
0d5b594f PA |
3275 | executing until proven otherwise with a stop reply. |
3276 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3277 | stopped. */ |
0d5b594f | 3278 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3279 | |
0d5b594f | 3280 | remote_notice_new_inferior (item->ptid, executing); |
6dc54d91 PA |
3281 | |
3282 | info = demand_private_info (item->ptid); | |
3283 | info->core = item->core; | |
3284 | info->extra = item->extra; | |
3285 | item->extra = NULL; | |
79efa585 SM |
3286 | info->name = item->name; |
3287 | item->name = NULL; | |
6dc54d91 PA |
3288 | } |
3289 | } | |
3290 | } | |
3291 | ||
ab970af1 PA |
3292 | if (!got_list) |
3293 | { | |
3294 | /* If no thread listing method is supported, then query whether | |
3295 | each known thread is alive, one by one, with the T packet. | |
3296 | If the target doesn't support threads at all, then this is a | |
3297 | no-op. See remote_thread_alive. */ | |
3298 | prune_threads (); | |
3299 | } | |
3300 | ||
6dc54d91 | 3301 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3302 | } |
3303 | ||
802188a7 | 3304 | /* |
9d1f7ab2 MS |
3305 | * Collect a descriptive string about the given thread. |
3306 | * The target may say anything it wants to about the thread | |
3307 | * (typically info about its blocked / runnable state, name, etc.). | |
3308 | * This string will appear in the info threads display. | |
802188a7 | 3309 | * |
9d1f7ab2 MS |
3310 | * Optional: targets are not required to implement this function. |
3311 | */ | |
3312 | ||
3313 | static char * | |
c15906d8 | 3314 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3315 | { |
d01949b6 | 3316 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3317 | int result; |
3318 | int set; | |
3319 | threadref id; | |
3320 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3321 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3322 | int n = 0; /* position in display_buf */ |
3323 | ||
5d93a237 | 3324 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3325 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3326 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3327 | |
60e569b9 | 3328 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3329 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3330 | /* This is the main thread which was added by GDB. The remote |
3331 | server doesn't know about it. */ | |
3332 | return NULL; | |
3333 | ||
4082afcc | 3334 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3335 | { |
3336 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3337 | |
fe978cb0 PA |
3338 | if (info && info->priv) |
3339 | return info->priv->extra; | |
dc146f7c VP |
3340 | else |
3341 | return NULL; | |
3342 | } | |
3343 | ||
b80fafe3 | 3344 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3345 | { |
82f73884 PA |
3346 | char *b = rs->buf; |
3347 | char *endb = rs->buf + get_remote_packet_size (); | |
3348 | ||
3349 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3350 | b += strlen (b); | |
3351 | write_ptid (b, endb, tp->ptid); | |
3352 | ||
2e9f7625 | 3353 | putpkt (rs->buf); |
6d820c5c | 3354 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3355 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3356 | { |
2e9f7625 DJ |
3357 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3358 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3359 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3360 | return display_buf; |
3361 | } | |
0f71a2f6 | 3362 | } |
9d1f7ab2 MS |
3363 | |
3364 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3365 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3366 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3367 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3368 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3369 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3370 | if (threadinfo.active) | |
0f71a2f6 | 3371 | { |
9d1f7ab2 | 3372 | if (*threadinfo.shortname) |
2bc416ba | 3373 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3374 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3375 | if (*threadinfo.display) |
2bc416ba | 3376 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3377 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3378 | if (*threadinfo.more_display) |
2bc416ba | 3379 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3380 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3381 | |
3382 | if (n > 0) | |
c5aa993b | 3383 | { |
23860348 | 3384 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3385 | if (',' == display_buf[n-1]) |
3386 | display_buf[n-1] = ' '; | |
3387 | return display_buf; | |
c5aa993b | 3388 | } |
0f71a2f6 | 3389 | } |
9d1f7ab2 | 3390 | return NULL; |
0f71a2f6 | 3391 | } |
c906108c | 3392 | \f |
c5aa993b | 3393 | |
0fb4aa4b | 3394 | static int |
61fc905d | 3395 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3396 | struct static_tracepoint_marker *marker) |
3397 | { | |
3398 | struct remote_state *rs = get_remote_state (); | |
3399 | char *p = rs->buf; | |
3400 | ||
bba74b36 | 3401 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3402 | p += strlen (p); |
3403 | p += hexnumstr (p, addr); | |
3404 | putpkt (rs->buf); | |
3405 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3406 | p = rs->buf; | |
3407 | ||
3408 | if (*p == 'E') | |
3409 | error (_("Remote failure reply: %s"), p); | |
3410 | ||
3411 | if (*p++ == 'm') | |
3412 | { | |
3413 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3414 | return 1; | |
3415 | } | |
3416 | ||
3417 | return 0; | |
3418 | } | |
3419 | ||
0fb4aa4b | 3420 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3421 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3422 | const char *strid) | |
0fb4aa4b PA |
3423 | { |
3424 | struct remote_state *rs = get_remote_state (); | |
3425 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3426 | struct static_tracepoint_marker *marker = NULL; | |
3427 | struct cleanup *old_chain; | |
3428 | char *p; | |
3429 | ||
3430 | /* Ask for a first packet of static tracepoint marker | |
3431 | definition. */ | |
3432 | putpkt ("qTfSTM"); | |
3433 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3434 | p = rs->buf; | |
3435 | if (*p == 'E') | |
3436 | error (_("Remote failure reply: %s"), p); | |
3437 | ||
3438 | old_chain = make_cleanup (free_current_marker, &marker); | |
3439 | ||
3440 | while (*p++ == 'm') | |
3441 | { | |
3442 | if (marker == NULL) | |
3443 | marker = XCNEW (struct static_tracepoint_marker); | |
3444 | ||
3445 | do | |
3446 | { | |
3447 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3448 | ||
3449 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3450 | { | |
3451 | VEC_safe_push (static_tracepoint_marker_p, | |
3452 | markers, marker); | |
3453 | marker = NULL; | |
3454 | } | |
3455 | else | |
3456 | { | |
3457 | release_static_tracepoint_marker (marker); | |
3458 | memset (marker, 0, sizeof (*marker)); | |
3459 | } | |
3460 | } | |
3461 | while (*p++ == ','); /* comma-separated list */ | |
3462 | /* Ask for another packet of static tracepoint definition. */ | |
3463 | putpkt ("qTsSTM"); | |
3464 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3465 | p = rs->buf; | |
3466 | } | |
3467 | ||
3468 | do_cleanups (old_chain); | |
3469 | return markers; | |
3470 | } | |
3471 | ||
3472 | \f | |
10760264 JB |
3473 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3474 | ||
3475 | static ptid_t | |
1e6b91a4 | 3476 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3477 | { |
ba348170 | 3478 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3479 | } |
3480 | \f | |
3481 | ||
24b06219 | 3482 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3483 | |
3484 | static void | |
fba45db2 | 3485 | extended_remote_restart (void) |
c906108c | 3486 | { |
d01949b6 | 3487 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3488 | |
3489 | /* Send the restart command; for reasons I don't understand the | |
3490 | remote side really expects a number after the "R". */ | |
ea9c271d | 3491 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3492 | putpkt (rs->buf); |
c906108c | 3493 | |
ad9a8f3f | 3494 | remote_fileio_reset (); |
c906108c SS |
3495 | } |
3496 | \f | |
3497 | /* Clean up connection to a remote debugger. */ | |
3498 | ||
c906108c | 3499 | static void |
de90e03d | 3500 | remote_close (struct target_ops *self) |
c906108c | 3501 | { |
5d93a237 TT |
3502 | struct remote_state *rs = get_remote_state (); |
3503 | ||
3504 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3505 | return; /* already closed */ |
3506 | ||
048094ac | 3507 | /* Make sure we leave stdin registered in the event loop. */ |
e3594fd1 | 3508 | remote_terminal_ours (self); |
ce5ce7ed | 3509 | |
5d93a237 TT |
3510 | serial_close (rs->remote_desc); |
3511 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3512 | |
3513 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3514 | of all the inferiors and their threads we were controlling. |
3515 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3516 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3517 | inferior_ptid = null_ptid; |
f67fd822 | 3518 | discard_all_inferiors (); |
ce5ce7ed | 3519 | |
f48ff2a7 YQ |
3520 | /* We are closing the remote target, so we should discard |
3521 | everything of this target. */ | |
bcc75809 | 3522 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3523 | |
3524 | if (remote_async_inferior_event_token) | |
3525 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3526 | |
5965e028 | 3527 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3528 | |
3529 | trace_reset_local_state (); | |
c906108c SS |
3530 | } |
3531 | ||
23860348 | 3532 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3533 | |
3534 | static void | |
fba45db2 | 3535 | get_offsets (void) |
c906108c | 3536 | { |
d01949b6 | 3537 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3538 | char *buf; |
085dd6e6 | 3539 | char *ptr; |
31d99776 DJ |
3540 | int lose, num_segments = 0, do_sections, do_segments; |
3541 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3542 | struct section_offsets *offs; |
31d99776 DJ |
3543 | struct symfile_segment_data *data; |
3544 | ||
3545 | if (symfile_objfile == NULL) | |
3546 | return; | |
c906108c SS |
3547 | |
3548 | putpkt ("qOffsets"); | |
6d820c5c | 3549 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3550 | buf = rs->buf; |
c906108c SS |
3551 | |
3552 | if (buf[0] == '\000') | |
3553 | return; /* Return silently. Stub doesn't support | |
23860348 | 3554 | this command. */ |
c906108c SS |
3555 | if (buf[0] == 'E') |
3556 | { | |
8a3fe4f8 | 3557 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3558 | return; |
3559 | } | |
3560 | ||
3561 | /* Pick up each field in turn. This used to be done with scanf, but | |
3562 | scanf will make trouble if CORE_ADDR size doesn't match | |
3563 | conversion directives correctly. The following code will work | |
3564 | with any size of CORE_ADDR. */ | |
3565 | text_addr = data_addr = bss_addr = 0; | |
3566 | ptr = buf; | |
3567 | lose = 0; | |
3568 | ||
61012eef | 3569 | if (startswith (ptr, "Text=")) |
c906108c SS |
3570 | { |
3571 | ptr += 5; | |
3572 | /* Don't use strtol, could lose on big values. */ | |
3573 | while (*ptr && *ptr != ';') | |
3574 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3575 | |
61012eef | 3576 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3577 | { |
3578 | ptr += 6; | |
3579 | while (*ptr && *ptr != ';') | |
3580 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3581 | } | |
3582 | else | |
3583 | lose = 1; | |
3584 | ||
61012eef | 3585 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3586 | { |
3587 | ptr += 5; | |
3588 | while (*ptr && *ptr != ';') | |
3589 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3590 | |
31d99776 DJ |
3591 | if (bss_addr != data_addr) |
3592 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3593 | } | |
3594 | else | |
3595 | lose = 1; | |
3596 | } | |
61012eef | 3597 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3598 | { |
31d99776 DJ |
3599 | ptr += 8; |
3600 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3601 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3602 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3603 | num_segments = 1; | |
3604 | ||
61012eef | 3605 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3606 | { |
3607 | ptr += 9; | |
3608 | while (*ptr && *ptr != ';') | |
3609 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3610 | num_segments++; | |
3611 | } | |
c906108c SS |
3612 | } |
3613 | else | |
3614 | lose = 1; | |
3615 | ||
3616 | if (lose) | |
8a3fe4f8 | 3617 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3618 | else if (*ptr != '\0') |
3619 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3620 | |
802188a7 | 3621 | offs = ((struct section_offsets *) |
a39a16c4 | 3622 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3623 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3624 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3625 | |
31d99776 DJ |
3626 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3627 | do_segments = (data != NULL); | |
3628 | do_sections = num_segments == 0; | |
c906108c | 3629 | |
28c32713 | 3630 | if (num_segments > 0) |
31d99776 | 3631 | { |
31d99776 DJ |
3632 | segments[0] = text_addr; |
3633 | segments[1] = data_addr; | |
3634 | } | |
28c32713 JB |
3635 | /* If we have two segments, we can still try to relocate everything |
3636 | by assuming that the .text and .data offsets apply to the whole | |
3637 | text and data segments. Convert the offsets given in the packet | |
3638 | to base addresses for symfile_map_offsets_to_segments. */ | |
3639 | else if (data && data->num_segments == 2) | |
3640 | { | |
3641 | segments[0] = data->segment_bases[0] + text_addr; | |
3642 | segments[1] = data->segment_bases[1] + data_addr; | |
3643 | num_segments = 2; | |
3644 | } | |
8d385431 DJ |
3645 | /* If the object file has only one segment, assume that it is text |
3646 | rather than data; main programs with no writable data are rare, | |
3647 | but programs with no code are useless. Of course the code might | |
3648 | have ended up in the data segment... to detect that we would need | |
3649 | the permissions here. */ | |
3650 | else if (data && data->num_segments == 1) | |
3651 | { | |
3652 | segments[0] = data->segment_bases[0] + text_addr; | |
3653 | num_segments = 1; | |
3654 | } | |
28c32713 JB |
3655 | /* There's no way to relocate by segment. */ |
3656 | else | |
3657 | do_segments = 0; | |
31d99776 DJ |
3658 | |
3659 | if (do_segments) | |
3660 | { | |
3661 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3662 | offs, num_segments, segments); | |
3663 | ||
3664 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3665 | error (_("Can not handle qOffsets TextSeg " |
3666 | "response with this symbol file")); | |
31d99776 DJ |
3667 | |
3668 | if (ret > 0) | |
3669 | do_sections = 0; | |
3670 | } | |
c906108c | 3671 | |
9ef895d6 DJ |
3672 | if (data) |
3673 | free_symfile_segment_data (data); | |
31d99776 DJ |
3674 | |
3675 | if (do_sections) | |
3676 | { | |
3677 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3678 | ||
3e43a32a MS |
3679 | /* This is a temporary kludge to force data and bss to use the |
3680 | same offsets because that's what nlmconv does now. The real | |
3681 | solution requires changes to the stub and remote.c that I | |
3682 | don't have time to do right now. */ | |
31d99776 DJ |
3683 | |
3684 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3685 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3686 | } | |
c906108c SS |
3687 | |
3688 | objfile_relocate (symfile_objfile, offs); | |
3689 | } | |
3690 | ||
9a7071a8 JB |
3691 | /* Send interrupt_sequence to remote target. */ |
3692 | static void | |
eeae04df | 3693 | send_interrupt_sequence (void) |
9a7071a8 | 3694 | { |
5d93a237 TT |
3695 | struct remote_state *rs = get_remote_state (); |
3696 | ||
9a7071a8 | 3697 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3698 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3699 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3700 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3701 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3702 | { | |
5d93a237 | 3703 | serial_send_break (rs->remote_desc); |
c33e31fd | 3704 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3705 | } |
3706 | else | |
3707 | internal_error (__FILE__, __LINE__, | |
3708 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3709 | interrupt_sequence_mode); | |
3710 | } | |
3711 | ||
3405876a PA |
3712 | |
3713 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3714 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3715 | ||
3716 | static ptid_t | |
3717 | stop_reply_extract_thread (char *stop_reply) | |
3718 | { | |
3719 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3720 | { | |
3721 | char *p; | |
3722 | ||
3723 | /* Txx r:val ; r:val (...) */ | |
3724 | p = &stop_reply[3]; | |
3725 | ||
3726 | /* Look for "register" named "thread". */ | |
3727 | while (*p != '\0') | |
3728 | { | |
3729 | char *p1; | |
3730 | ||
3731 | p1 = strchr (p, ':'); | |
3732 | if (p1 == NULL) | |
3733 | return null_ptid; | |
3734 | ||
3735 | if (strncmp (p, "thread", p1 - p) == 0) | |
3736 | return read_ptid (++p1, &p); | |
3737 | ||
3738 | p1 = strchr (p, ';'); | |
3739 | if (p1 == NULL) | |
3740 | return null_ptid; | |
3741 | p1++; | |
3742 | ||
3743 | p = p1; | |
3744 | } | |
3745 | } | |
3746 | ||
3747 | return null_ptid; | |
3748 | } | |
3749 | ||
b7ea362b PA |
3750 | /* Determine the remote side's current thread. If we have a stop |
3751 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3752 | "thread" register we can extract the current thread from. If not, | |
3753 | ask the remote which is the current thread with qC. The former | |
3754 | method avoids a roundtrip. */ | |
3755 | ||
3756 | static ptid_t | |
3757 | get_current_thread (char *wait_status) | |
3758 | { | |
6a49a997 | 3759 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3760 | |
3761 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3762 | the target architecture, which we haven't yet fully determined at | |
3763 | this point. */ | |
3764 | if (wait_status != NULL) | |
3765 | ptid = stop_reply_extract_thread (wait_status); | |
3766 | if (ptid_equal (ptid, null_ptid)) | |
3767 | ptid = remote_current_thread (inferior_ptid); | |
3768 | ||
3769 | return ptid; | |
3770 | } | |
3771 | ||
49c62f2e PA |
3772 | /* Query the remote target for which is the current thread/process, |
3773 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3774 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3775 | to return the current thread. |
3776 | ||
3777 | This function is called after handling the '?' or 'vRun' packets, | |
3778 | whose response is a stop reply from which we can also try | |
3779 | extracting the thread. If the target doesn't support the explicit | |
3780 | qC query, we infer the current thread from that stop reply, passed | |
3781 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3782 | |
3783 | static void | |
3405876a | 3784 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3785 | { |
3786 | struct remote_state *rs = get_remote_state (); | |
3787 | int fake_pid_p = 0; | |
6a49a997 | 3788 | ptid_t ptid; |
49c62f2e PA |
3789 | |
3790 | inferior_ptid = null_ptid; | |
3791 | ||
b7ea362b PA |
3792 | /* Now, if we have thread information, update inferior_ptid. */ |
3793 | ptid = get_current_thread (wait_status); | |
3405876a | 3794 | |
49c62f2e PA |
3795 | if (!ptid_equal (ptid, null_ptid)) |
3796 | { | |
3797 | if (!remote_multi_process_p (rs)) | |
3798 | fake_pid_p = 1; | |
3799 | ||
3800 | inferior_ptid = ptid; | |
3801 | } | |
3802 | else | |
3803 | { | |
3804 | /* Without this, some commands which require an active target | |
3805 | (such as kill) won't work. This variable serves (at least) | |
3806 | double duty as both the pid of the target process (if it has | |
3807 | such), and as a flag indicating that a target is active. */ | |
3808 | inferior_ptid = magic_null_ptid; | |
3809 | fake_pid_p = 1; | |
3810 | } | |
3811 | ||
1b6e6f5c | 3812 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3813 | |
3814 | /* Add the main thread. */ | |
3815 | add_thread_silent (inferior_ptid); | |
3816 | } | |
3817 | ||
6efcd9a8 PA |
3818 | /* Print info about a thread that was found already stopped on |
3819 | connection. */ | |
3820 | ||
3821 | static void | |
3822 | print_one_stopped_thread (struct thread_info *thread) | |
3823 | { | |
3824 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3825 | ||
3826 | switch_to_thread (thread->ptid); | |
3827 | stop_pc = get_frame_pc (get_current_frame ()); | |
3828 | set_current_sal_from_frame (get_current_frame ()); | |
3829 | ||
3830 | thread->suspend.waitstatus_pending_p = 0; | |
3831 | ||
3832 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3833 | { | |
3834 | enum gdb_signal sig = ws->value.sig; | |
3835 | ||
3836 | if (signal_print_state (sig)) | |
3837 | observer_notify_signal_received (sig); | |
3838 | } | |
3839 | observer_notify_normal_stop (NULL, 1); | |
3840 | } | |
3841 | ||
221e1a37 PA |
3842 | /* Process all initial stop replies the remote side sent in response |
3843 | to the ? packet. These indicate threads that were already stopped | |
3844 | on initial connection. We mark these threads as stopped and print | |
3845 | their current frame before giving the user the prompt. */ | |
3846 | ||
3847 | static void | |
6efcd9a8 | 3848 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3849 | { |
3850 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3851 | struct inferior *inf; |
3852 | struct thread_info *thread; | |
3853 | struct thread_info *selected = NULL; | |
3854 | struct thread_info *lowest_stopped = NULL; | |
3855 | struct thread_info *first = NULL; | |
221e1a37 PA |
3856 | |
3857 | /* Consume the initial pending events. */ | |
3858 | while (pending_stop_replies-- > 0) | |
3859 | { | |
3860 | ptid_t waiton_ptid = minus_one_ptid; | |
3861 | ptid_t event_ptid; | |
3862 | struct target_waitstatus ws; | |
3863 | int ignore_event = 0; | |
6efcd9a8 | 3864 | struct thread_info *thread; |
221e1a37 PA |
3865 | |
3866 | memset (&ws, 0, sizeof (ws)); | |
3867 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3868 | if (remote_debug) | |
3869 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3870 | ||
3871 | switch (ws.kind) | |
3872 | { | |
3873 | case TARGET_WAITKIND_IGNORE: | |
3874 | case TARGET_WAITKIND_NO_RESUMED: | |
3875 | case TARGET_WAITKIND_SIGNALLED: | |
3876 | case TARGET_WAITKIND_EXITED: | |
3877 | /* We shouldn't see these, but if we do, just ignore. */ | |
3878 | if (remote_debug) | |
3879 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3880 | ignore_event = 1; | |
3881 | break; | |
3882 | ||
3883 | case TARGET_WAITKIND_EXECD: | |
3884 | xfree (ws.value.execd_pathname); | |
3885 | break; | |
3886 | default: | |
3887 | break; | |
3888 | } | |
3889 | ||
3890 | if (ignore_event) | |
3891 | continue; | |
3892 | ||
6efcd9a8 | 3893 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3894 | |
3895 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3896 | { | |
3897 | enum gdb_signal sig = ws.value.sig; | |
3898 | ||
3899 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3900 | instead of signal 0. Suppress it. */ | |
3901 | if (sig == GDB_SIGNAL_TRAP) | |
3902 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3903 | thread->suspend.stop_signal = sig; |
3904 | ws.value.sig = sig; | |
3905 | } | |
221e1a37 | 3906 | |
6efcd9a8 PA |
3907 | thread->suspend.waitstatus = ws; |
3908 | ||
3909 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3910 | || ws.value.sig != GDB_SIGNAL_0) | |
3911 | thread->suspend.waitstatus_pending_p = 1; | |
3912 | ||
3913 | set_executing (event_ptid, 0); | |
3914 | set_running (event_ptid, 0); | |
3915 | } | |
3916 | ||
3917 | /* "Notice" the new inferiors before anything related to | |
3918 | registers/memory. */ | |
3919 | ALL_INFERIORS (inf) | |
3920 | { | |
3921 | if (inf->pid == 0) | |
3922 | continue; | |
3923 | ||
3924 | inf->needs_setup = 1; | |
3925 | ||
3926 | if (non_stop) | |
3927 | { | |
3928 | thread = any_live_thread_of_process (inf->pid); | |
3929 | notice_new_inferior (thread->ptid, | |
3930 | thread->state == THREAD_RUNNING, | |
3931 | from_tty); | |
3932 | } | |
3933 | } | |
3934 | ||
3935 | /* If all-stop on top of non-stop, pause all threads. Note this | |
3936 | records the threads' stop pc, so must be done after "noticing" | |
3937 | the inferiors. */ | |
3938 | if (!non_stop) | |
3939 | { | |
3940 | stop_all_threads (); | |
3941 | ||
3942 | /* If all threads of an inferior were already stopped, we | |
3943 | haven't setup the inferior yet. */ | |
3944 | ALL_INFERIORS (inf) | |
3945 | { | |
3946 | if (inf->pid == 0) | |
3947 | continue; | |
221e1a37 | 3948 | |
6efcd9a8 PA |
3949 | if (inf->needs_setup) |
3950 | { | |
3951 | thread = any_live_thread_of_process (inf->pid); | |
3952 | switch_to_thread_no_regs (thread); | |
3953 | setup_inferior (0); | |
3954 | } | |
3955 | } | |
221e1a37 | 3956 | } |
6efcd9a8 PA |
3957 | |
3958 | /* Now go over all threads that are stopped, and print their current | |
3959 | frame. If all-stop, then if there's a signalled thread, pick | |
3960 | that as current. */ | |
3961 | ALL_NON_EXITED_THREADS (thread) | |
3962 | { | |
6efcd9a8 PA |
3963 | if (first == NULL) |
3964 | first = thread; | |
3965 | ||
3966 | if (!non_stop) | |
3967 | set_running (thread->ptid, 0); | |
3968 | else if (thread->state != THREAD_STOPPED) | |
3969 | continue; | |
3970 | ||
6efcd9a8 PA |
3971 | if (selected == NULL |
3972 | && thread->suspend.waitstatus_pending_p) | |
3973 | selected = thread; | |
3974 | ||
5d5658a1 PA |
3975 | if (lowest_stopped == NULL |
3976 | || thread->inf->num < lowest_stopped->inf->num | |
3977 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
3978 | lowest_stopped = thread; |
3979 | ||
3980 | if (non_stop) | |
3981 | print_one_stopped_thread (thread); | |
3982 | } | |
3983 | ||
3984 | /* In all-stop, we only print the status of one thread, and leave | |
3985 | others with their status pending. */ | |
3986 | if (!non_stop) | |
3987 | { | |
3988 | thread = selected; | |
3989 | if (thread == NULL) | |
3990 | thread = lowest_stopped; | |
3991 | if (thread == NULL) | |
3992 | thread = first; | |
3993 | ||
3994 | print_one_stopped_thread (thread); | |
3995 | } | |
3996 | ||
3997 | /* For "info program". */ | |
3998 | thread = inferior_thread (); | |
3999 | if (thread->state == THREAD_STOPPED) | |
4000 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4001 | } |
4002 | ||
048094ac PA |
4003 | /* Start the remote connection and sync state. */ |
4004 | ||
9cbc821d | 4005 | static void |
04bd08de | 4006 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 4007 | { |
c8d104ad PA |
4008 | struct remote_state *rs = get_remote_state (); |
4009 | struct packet_config *noack_config; | |
2d717e4f | 4010 | char *wait_status = NULL; |
8621d6a9 | 4011 | |
048094ac PA |
4012 | /* Signal other parts that we're going through the initial setup, |
4013 | and so things may not be stable yet. E.g., we don't try to | |
4014 | install tracepoints until we've relocated symbols. Also, a | |
4015 | Ctrl-C before we're connected and synced up can't interrupt the | |
4016 | target. Instead, it offers to drop the (potentially wedged) | |
4017 | connection. */ | |
4018 | rs->starting_up = 1; | |
4019 | ||
522002f9 | 4020 | QUIT; |
c906108c | 4021 | |
9a7071a8 JB |
4022 | if (interrupt_on_connect) |
4023 | send_interrupt_sequence (); | |
4024 | ||
57e12211 | 4025 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4026 | remote_serial_write ("+", 1); |
1e51243a | 4027 | |
c8d104ad PA |
4028 | /* The first packet we send to the target is the optional "supported |
4029 | packets" request. If the target can answer this, it will tell us | |
4030 | which later probes to skip. */ | |
4031 | remote_query_supported (); | |
4032 | ||
d914c394 | 4033 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4034 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4035 | remote_set_permissions (target); |
d914c394 | 4036 | |
57809e5e JK |
4037 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4038 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4039 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4040 | invalid reply and GDB would return error in | |
4041 | remote_hostio_set_filesystem, making remote files access impossible. | |
4042 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4043 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4044 | { | |
4045 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4046 | ||
4047 | putpkt (v_mustreplyempty); | |
4048 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4049 | if (strcmp (rs->buf, "OK") == 0) | |
4050 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; | |
4051 | else if (strcmp (rs->buf, "") != 0) | |
4052 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4053 | rs->buf); | |
4054 | } | |
4055 | ||
c8d104ad PA |
4056 | /* Next, we possibly activate noack mode. |
4057 | ||
4058 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4059 | enable noack mode if the stub reported a wish for it with | |
4060 | qSupported. | |
4061 | ||
4062 | If set to TRUE, then enable noack mode even if the stub didn't | |
4063 | report it in qSupported. If the stub doesn't reply OK, the | |
4064 | session ends with an error. | |
4065 | ||
4066 | If FALSE, then don't activate noack mode, regardless of what the | |
4067 | stub claimed should be the default with qSupported. */ | |
4068 | ||
4069 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4070 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4071 | { |
4072 | putpkt ("QStartNoAckMode"); | |
4073 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4074 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4075 | rs->noack_mode = 1; | |
4076 | } | |
4077 | ||
04bd08de | 4078 | if (extended_p) |
5fe04517 PA |
4079 | { |
4080 | /* Tell the remote that we are using the extended protocol. */ | |
4081 | putpkt ("!"); | |
4082 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4083 | } | |
4084 | ||
9b224c5e PA |
4085 | /* Let the target know which signals it is allowed to pass down to |
4086 | the program. */ | |
4087 | update_signals_program_target (); | |
4088 | ||
d962ef82 DJ |
4089 | /* Next, if the target can specify a description, read it. We do |
4090 | this before anything involving memory or registers. */ | |
4091 | target_find_description (); | |
4092 | ||
6c95b8df PA |
4093 | /* Next, now that we know something about the target, update the |
4094 | address spaces in the program spaces. */ | |
4095 | update_address_spaces (); | |
4096 | ||
50c71eaf PA |
4097 | /* On OSs where the list of libraries is global to all |
4098 | processes, we fetch them early. */ | |
f5656ead | 4099 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 4100 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 4101 | |
6efcd9a8 | 4102 | if (target_is_non_stop_p ()) |
74531fed | 4103 | { |
4082afcc | 4104 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4105 | error (_("Non-stop mode requested, but remote " |
4106 | "does not support non-stop")); | |
74531fed PA |
4107 | |
4108 | putpkt ("QNonStop:1"); | |
4109 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4110 | ||
4111 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4112 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4113 | |
4114 | /* Find about threads and processes the stub is already | |
4115 | controlling. We default to adding them in the running state. | |
4116 | The '?' query below will then tell us about which threads are | |
4117 | stopped. */ | |
e8032dde | 4118 | remote_update_thread_list (target); |
74531fed | 4119 | } |
4082afcc | 4120 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4121 | { |
4122 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4123 | Request it explicitly. */ |
74531fed PA |
4124 | putpkt ("QNonStop:0"); |
4125 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4126 | ||
4127 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4128 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4129 | } |
4130 | ||
a0743c90 YQ |
4131 | /* Upload TSVs regardless of whether the target is running or not. The |
4132 | remote stub, such as GDBserver, may have some predefined or builtin | |
4133 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4134 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4135 | { |
4136 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4137 | ||
181e3713 | 4138 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4139 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4140 | } | |
4141 | ||
2d717e4f DJ |
4142 | /* Check whether the target is running now. */ |
4143 | putpkt ("?"); | |
4144 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4145 | ||
6efcd9a8 | 4146 | if (!target_is_non_stop_p ()) |
2d717e4f | 4147 | { |
74531fed | 4148 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4149 | { |
04bd08de | 4150 | if (!extended_p) |
74531fed | 4151 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4152 | |
4153 | /* We're connected, but not running. Drop out before we | |
4154 | call start_remote. */ | |
e278ad5b | 4155 | rs->starting_up = 0; |
c35b1492 | 4156 | return; |
2d717e4f DJ |
4157 | } |
4158 | else | |
74531fed | 4159 | { |
74531fed | 4160 | /* Save the reply for later. */ |
224c3ddb | 4161 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4162 | strcpy (wait_status, rs->buf); |
4163 | } | |
4164 | ||
b7ea362b | 4165 | /* Fetch thread list. */ |
e8032dde | 4166 | target_update_thread_list (); |
b7ea362b | 4167 | |
74531fed PA |
4168 | /* Let the stub know that we want it to return the thread. */ |
4169 | set_continue_thread (minus_one_ptid); | |
4170 | ||
b7ea362b PA |
4171 | if (thread_count () == 0) |
4172 | { | |
4173 | /* Target has no concept of threads at all. GDB treats | |
4174 | non-threaded target as single-threaded; add a main | |
4175 | thread. */ | |
4176 | add_current_inferior_and_thread (wait_status); | |
4177 | } | |
4178 | else | |
4179 | { | |
4180 | /* We have thread information; select the thread the target | |
4181 | says should be current. If we're reconnecting to a | |
4182 | multi-threaded program, this will ideally be the thread | |
4183 | that last reported an event before GDB disconnected. */ | |
4184 | inferior_ptid = get_current_thread (wait_status); | |
4185 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4186 | { | |
4187 | /* Odd... The target was able to list threads, but not | |
4188 | tell us which thread was current (no "thread" | |
4189 | register in T stop reply?). Just pick the first | |
4190 | thread in the thread list then. */ | |
c9f35b34 KB |
4191 | |
4192 | if (remote_debug) | |
4193 | fprintf_unfiltered (gdb_stdlog, | |
4194 | "warning: couldn't determine remote " | |
4195 | "current thread; picking first in list.\n"); | |
4196 | ||
b7ea362b PA |
4197 | inferior_ptid = thread_list->ptid; |
4198 | } | |
4199 | } | |
74531fed | 4200 | |
6e586cc5 YQ |
4201 | /* init_wait_for_inferior should be called before get_offsets in order |
4202 | to manage `inserted' flag in bp loc in a correct state. | |
4203 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4204 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4205 | start_remote, set `inserted' flag to 1. In the initialization of | |
4206 | inferior, breakpoint_init_inferior should be called first, and then | |
4207 | breakpoint_re_set can be called. If this order is broken, state of | |
4208 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4209 | manipulation. */ | |
4210 | init_wait_for_inferior (); | |
4211 | ||
74531fed PA |
4212 | get_offsets (); /* Get text, data & bss offsets. */ |
4213 | ||
d962ef82 DJ |
4214 | /* If we could not find a description using qXfer, and we know |
4215 | how to do it some other way, try again. This is not | |
4216 | supported for non-stop; it could be, but it is tricky if | |
4217 | there are no stopped threads when we connect. */ | |
04bd08de | 4218 | if (remote_read_description_p (target) |
f5656ead | 4219 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4220 | { |
4221 | target_clear_description (); | |
4222 | target_find_description (); | |
4223 | } | |
4224 | ||
74531fed PA |
4225 | /* Use the previously fetched status. */ |
4226 | gdb_assert (wait_status != NULL); | |
4227 | strcpy (rs->buf, wait_status); | |
4228 | rs->cached_wait_status = 1; | |
4229 | ||
04bd08de | 4230 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4231 | } |
4232 | else | |
4233 | { | |
68c97600 PA |
4234 | /* Clear WFI global state. Do this before finding about new |
4235 | threads and inferiors, and setting the current inferior. | |
4236 | Otherwise we would clear the proceed status of the current | |
4237 | inferior when we want its stop_soon state to be preserved | |
4238 | (see notice_new_inferior). */ | |
4239 | init_wait_for_inferior (); | |
4240 | ||
74531fed PA |
4241 | /* In non-stop, we will either get an "OK", meaning that there |
4242 | are no stopped threads at this time; or, a regular stop | |
4243 | reply. In the latter case, there may be more than one thread | |
4244 | stopped --- we pull them all out using the vStopped | |
4245 | mechanism. */ | |
4246 | if (strcmp (rs->buf, "OK") != 0) | |
4247 | { | |
722247f1 | 4248 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4249 | |
722247f1 YQ |
4250 | /* remote_notif_get_pending_replies acks this one, and gets |
4251 | the rest out. */ | |
f48ff2a7 | 4252 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4253 | = remote_notif_parse (notif, rs->buf); |
4254 | remote_notif_get_pending_events (notif); | |
74531fed | 4255 | } |
2d717e4f | 4256 | |
74531fed PA |
4257 | if (thread_count () == 0) |
4258 | { | |
04bd08de | 4259 | if (!extended_p) |
74531fed | 4260 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4261 | |
c35b1492 PA |
4262 | /* We're connected, but not running. Drop out before we |
4263 | call start_remote. */ | |
e278ad5b | 4264 | rs->starting_up = 0; |
c35b1492 PA |
4265 | return; |
4266 | } | |
74531fed | 4267 | |
74531fed PA |
4268 | /* In non-stop mode, any cached wait status will be stored in |
4269 | the stop reply queue. */ | |
4270 | gdb_assert (wait_status == NULL); | |
f0223081 | 4271 | |
2455069d | 4272 | /* Report all signals during attach/startup. */ |
94bedb42 | 4273 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4274 | |
4275 | /* If there are already stopped threads, mark them stopped and | |
4276 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4277 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4278 | |
4279 | if (target_can_async_p ()) | |
4280 | target_async (1); | |
74531fed | 4281 | } |
c8d104ad | 4282 | |
c8d104ad PA |
4283 | /* If we connected to a live target, do some additional setup. */ |
4284 | if (target_has_execution) | |
4285 | { | |
f4ccffad | 4286 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4287 | remote_check_symbols (); |
c8d104ad | 4288 | } |
50c71eaf | 4289 | |
d5551862 SS |
4290 | /* Possibly the target has been engaged in a trace run started |
4291 | previously; find out where things are at. */ | |
8bd200f1 | 4292 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4293 | { |
00bf0b85 | 4294 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4295 | |
00bf0b85 SS |
4296 | if (current_trace_status ()->running) |
4297 | printf_filtered (_("Trace is already running on the target.\n")); | |
4298 | ||
ab6617cc | 4299 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4300 | |
4301 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4302 | } |
4303 | ||
c0272db5 TW |
4304 | /* Possibly the target has been engaged in a btrace record started |
4305 | previously; find out where things are at. */ | |
4306 | remote_btrace_maybe_reopen (); | |
4307 | ||
1e51243a PA |
4308 | /* The thread and inferior lists are now synchronized with the |
4309 | target, our symbols have been relocated, and we're merged the | |
4310 | target's tracepoints with ours. We're done with basic start | |
4311 | up. */ | |
4312 | rs->starting_up = 0; | |
4313 | ||
a25a5a45 PA |
4314 | /* Maybe breakpoints are global and need to be inserted now. */ |
4315 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4316 | insert_breakpoints (); |
c906108c SS |
4317 | } |
4318 | ||
4319 | /* Open a connection to a remote debugger. | |
4320 | NAME is the filename used for communication. */ | |
4321 | ||
4322 | static void | |
014f9477 | 4323 | remote_open (const char *name, int from_tty) |
c906108c | 4324 | { |
75c99385 | 4325 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4326 | } |
4327 | ||
c906108c SS |
4328 | /* Open a connection to a remote debugger using the extended |
4329 | remote gdb protocol. NAME is the filename used for communication. */ | |
4330 | ||
4331 | static void | |
014f9477 | 4332 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4333 | { |
75c99385 | 4334 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4335 | } |
4336 | ||
ca4f7f8b PA |
4337 | /* Reset all packets back to "unknown support". Called when opening a |
4338 | new connection to a remote target. */ | |
c906108c | 4339 | |
d471ea57 | 4340 | static void |
ca4f7f8b | 4341 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4342 | { |
4343 | int i; | |
a744cf53 | 4344 | |
444abaca | 4345 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4346 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4347 | } |
4348 | ||
ca4f7f8b PA |
4349 | /* Initialize all packet configs. */ |
4350 | ||
4351 | static void | |
4352 | init_all_packet_configs (void) | |
4353 | { | |
4354 | int i; | |
4355 | ||
4356 | for (i = 0; i < PACKET_MAX; i++) | |
4357 | { | |
4358 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4359 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4360 | } | |
4361 | } | |
4362 | ||
23860348 | 4363 | /* Symbol look-up. */ |
dc8acb97 MS |
4364 | |
4365 | static void | |
36d25514 | 4366 | remote_check_symbols (void) |
dc8acb97 | 4367 | { |
d01949b6 | 4368 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4369 | char *msg, *reply, *tmp; |
dc8acb97 | 4370 | int end; |
28170b88 | 4371 | long reply_size; |
a5c0808e | 4372 | struct cleanup *old_chain; |
dc8acb97 | 4373 | |
63154eca PA |
4374 | /* The remote side has no concept of inferiors that aren't running |
4375 | yet, it only knows about running processes. If we're connected | |
4376 | but our current inferior is not running, we should not invite the | |
4377 | remote target to request symbol lookups related to its | |
4378 | (unrelated) current process. */ | |
4379 | if (!target_has_execution) | |
4380 | return; | |
4381 | ||
4082afcc | 4382 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4383 | return; |
4384 | ||
63154eca PA |
4385 | /* Make sure the remote is pointing at the right process. Note |
4386 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4387 | set_general_process (); |
4388 | ||
6d820c5c DJ |
4389 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4390 | because we need both at the same time. */ | |
224c3ddb | 4391 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4392 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4393 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4394 | make_cleanup (free_current_contents, &reply); | |
4395 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4396 | |
23860348 | 4397 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4398 | |
4399 | putpkt ("qSymbol::"); | |
28170b88 MK |
4400 | getpkt (&reply, &reply_size, 0); |
4401 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4402 | |
61012eef | 4403 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4404 | { |
77e371c0 TT |
4405 | struct bound_minimal_symbol sym; |
4406 | ||
dc8acb97 | 4407 | tmp = &reply[8]; |
cfd77fa1 | 4408 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4409 | msg[end] = '\0'; |
4410 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4411 | if (sym.minsym == NULL) |
ea9c271d | 4412 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4413 | else |
2bbe3cc1 | 4414 | { |
f5656ead | 4415 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4416 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4417 | |
4418 | /* If this is a function address, return the start of code | |
4419 | instead of any data function descriptor. */ | |
f5656ead | 4420 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4421 | sym_addr, |
4422 | ¤t_target); | |
4423 | ||
4424 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4425 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4426 | } |
4427 | ||
dc8acb97 | 4428 | putpkt (msg); |
28170b88 | 4429 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4430 | } |
a5c0808e PA |
4431 | |
4432 | do_cleanups (old_chain); | |
dc8acb97 MS |
4433 | } |
4434 | ||
9db8d71f | 4435 | static struct serial * |
baa336ce | 4436 | remote_serial_open (const char *name) |
9db8d71f DJ |
4437 | { |
4438 | static int udp_warning = 0; | |
4439 | ||
4440 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4441 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4442 | serial connection is reliable and not the serial connection promising | |
4443 | to be. */ | |
61012eef | 4444 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4445 | { |
3e43a32a MS |
4446 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4447 | "Some events may be lost, rendering further debugging " | |
4448 | "impossible.")); | |
9db8d71f DJ |
4449 | udp_warning = 1; |
4450 | } | |
4451 | ||
4452 | return serial_open (name); | |
4453 | } | |
4454 | ||
d914c394 SS |
4455 | /* Inform the target of our permission settings. The permission flags |
4456 | work without this, but if the target knows the settings, it can do | |
4457 | a couple things. First, it can add its own check, to catch cases | |
4458 | that somehow manage to get by the permissions checks in target | |
4459 | methods. Second, if the target is wired to disallow particular | |
4460 | settings (for instance, a system in the field that is not set up to | |
4461 | be able to stop at a breakpoint), it can object to any unavailable | |
4462 | permissions. */ | |
4463 | ||
4464 | void | |
c378d69d | 4465 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4466 | { |
4467 | struct remote_state *rs = get_remote_state (); | |
4468 | ||
bba74b36 YQ |
4469 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4470 | "WriteReg:%x;WriteMem:%x;" | |
4471 | "InsertBreak:%x;InsertTrace:%x;" | |
4472 | "InsertFastTrace:%x;Stop:%x", | |
4473 | may_write_registers, may_write_memory, | |
4474 | may_insert_breakpoints, may_insert_tracepoints, | |
4475 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4476 | putpkt (rs->buf); |
4477 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4478 | ||
4479 | /* If the target didn't like the packet, warn the user. Do not try | |
4480 | to undo the user's settings, that would just be maddening. */ | |
4481 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4482 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4483 | } |
4484 | ||
be2a5f71 DJ |
4485 | /* This type describes each known response to the qSupported |
4486 | packet. */ | |
4487 | struct protocol_feature | |
4488 | { | |
4489 | /* The name of this protocol feature. */ | |
4490 | const char *name; | |
4491 | ||
4492 | /* The default for this protocol feature. */ | |
4493 | enum packet_support default_support; | |
4494 | ||
4495 | /* The function to call when this feature is reported, or after | |
4496 | qSupported processing if the feature is not supported. | |
4497 | The first argument points to this structure. The second | |
4498 | argument indicates whether the packet requested support be | |
4499 | enabled, disabled, or probed (or the default, if this function | |
4500 | is being called at the end of processing and this feature was | |
4501 | not reported). The third argument may be NULL; if not NULL, it | |
4502 | is a NUL-terminated string taken from the packet following | |
4503 | this feature's name and an equals sign. */ | |
4504 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4505 | const char *); | |
4506 | ||
4507 | /* The corresponding packet for this feature. Only used if | |
4508 | FUNC is remote_supported_packet. */ | |
4509 | int packet; | |
4510 | }; | |
4511 | ||
be2a5f71 DJ |
4512 | static void |
4513 | remote_supported_packet (const struct protocol_feature *feature, | |
4514 | enum packet_support support, | |
4515 | const char *argument) | |
4516 | { | |
4517 | if (argument) | |
4518 | { | |
4519 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4520 | " \"%s\"."), feature->name); | |
4521 | return; | |
4522 | } | |
4523 | ||
4082afcc | 4524 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4525 | } |
be2a5f71 DJ |
4526 | |
4527 | static void | |
4528 | remote_packet_size (const struct protocol_feature *feature, | |
4529 | enum packet_support support, const char *value) | |
4530 | { | |
4531 | struct remote_state *rs = get_remote_state (); | |
4532 | ||
4533 | int packet_size; | |
4534 | char *value_end; | |
4535 | ||
4536 | if (support != PACKET_ENABLE) | |
4537 | return; | |
4538 | ||
4539 | if (value == NULL || *value == '\0') | |
4540 | { | |
4541 | warning (_("Remote target reported \"%s\" without a size."), | |
4542 | feature->name); | |
4543 | return; | |
4544 | } | |
4545 | ||
4546 | errno = 0; | |
4547 | packet_size = strtol (value, &value_end, 16); | |
4548 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4549 | { | |
4550 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4551 | feature->name, value); | |
4552 | return; | |
4553 | } | |
4554 | ||
be2a5f71 DJ |
4555 | /* Record the new maximum packet size. */ |
4556 | rs->explicit_packet_size = packet_size; | |
4557 | } | |
4558 | ||
dc473cfb | 4559 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4560 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4561 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4562 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4563 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4564 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4565 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4566 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4567 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4568 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4569 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4570 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4571 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4572 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4573 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4574 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4575 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4576 | PACKET_qXfer_spu_read }, | |
4577 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4578 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4579 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4580 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4581 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4582 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4583 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4584 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4585 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4586 | PACKET_QPassSignals }, | |
82075af2 JS |
4587 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4588 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4589 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4590 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4591 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4592 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4593 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4594 | PACKET_multiprocess_feature }, | |
4595 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4596 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4597 | PACKET_qXfer_siginfo_read }, | |
4598 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4599 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4600 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4601 | PACKET_ConditionalTracepoints }, |
4082afcc | 4602 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4603 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4604 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4605 | PACKET_BreakpointCommands }, |
4082afcc | 4606 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4607 | PACKET_FastTracepoints }, |
4082afcc | 4608 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4609 | PACKET_StaticTracepoints }, |
4082afcc | 4610 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4611 | PACKET_InstallInTrace}, |
4082afcc PA |
4612 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4613 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4614 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4615 | PACKET_bc }, | |
4616 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4617 | PACKET_bs }, | |
409873ef SS |
4618 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4619 | PACKET_TracepointSource }, | |
d914c394 SS |
4620 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4621 | PACKET_QAllow }, | |
4082afcc PA |
4622 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4623 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4624 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4625 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4626 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4627 | PACKET_qXfer_uib }, | |
03583c20 UW |
4628 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4629 | PACKET_QDisableRandomization }, | |
d1feda86 | 4630 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4631 | { "QTBuffer:size", PACKET_DISABLE, |
4632 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4633 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4634 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4635 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4636 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4637 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4638 | PACKET_qXfer_btrace }, |
4639 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4640 | PACKET_qXfer_btrace_conf }, |
4641 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4642 | PACKET_Qbtrace_conf_bts_size }, |
4643 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4644 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4645 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4646 | PACKET_fork_event_feature }, | |
4647 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4648 | PACKET_vfork_event_feature }, | |
94585166 DB |
4649 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4650 | PACKET_exec_event_feature }, | |
b20a6524 | 4651 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4652 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4653 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4654 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4655 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4656 | }; |
4657 | ||
c8d5aac9 L |
4658 | static char *remote_support_xml; |
4659 | ||
4660 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4661 | ||
4662 | void | |
6e39997a | 4663 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4664 | { |
4665 | #if defined(HAVE_LIBEXPAT) | |
4666 | if (remote_support_xml == NULL) | |
c4f7c687 | 4667 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4668 | else |
4669 | { | |
4670 | char *copy = xstrdup (remote_support_xml + 13); | |
4671 | char *p = strtok (copy, ","); | |
4672 | ||
4673 | do | |
4674 | { | |
4675 | if (strcmp (p, xml) == 0) | |
4676 | { | |
4677 | /* already there */ | |
4678 | xfree (copy); | |
4679 | return; | |
4680 | } | |
4681 | } | |
4682 | while ((p = strtok (NULL, ",")) != NULL); | |
4683 | xfree (copy); | |
4684 | ||
94b0dee1 PA |
4685 | remote_support_xml = reconcat (remote_support_xml, |
4686 | remote_support_xml, ",", xml, | |
4687 | (char *) NULL); | |
c8d5aac9 L |
4688 | } |
4689 | #endif | |
4690 | } | |
4691 | ||
4692 | static char * | |
4693 | remote_query_supported_append (char *msg, const char *append) | |
4694 | { | |
4695 | if (msg) | |
94b0dee1 | 4696 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4697 | else |
4698 | return xstrdup (append); | |
4699 | } | |
4700 | ||
be2a5f71 DJ |
4701 | static void |
4702 | remote_query_supported (void) | |
4703 | { | |
4704 | struct remote_state *rs = get_remote_state (); | |
4705 | char *next; | |
4706 | int i; | |
4707 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4708 | ||
4709 | /* The packet support flags are handled differently for this packet | |
4710 | than for most others. We treat an error, a disabled packet, and | |
4711 | an empty response identically: any features which must be reported | |
4712 | to be used will be automatically disabled. An empty buffer | |
4713 | accomplishes this, since that is also the representation for a list | |
4714 | containing no features. */ | |
4715 | ||
4716 | rs->buf[0] = 0; | |
4082afcc | 4717 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4718 | { |
c8d5aac9 | 4719 | char *q = NULL; |
94b0dee1 | 4720 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4721 | |
73b8c1fd PA |
4722 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4723 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4724 | |
f7e6eed5 PA |
4725 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4726 | q = remote_query_supported_append (q, "swbreak+"); | |
4727 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4728 | q = remote_query_supported_append (q, "hwbreak+"); | |
4729 | ||
dde08ee1 PA |
4730 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4731 | ||
8020350c DB |
4732 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4733 | != AUTO_BOOLEAN_FALSE) | |
4734 | q = remote_query_supported_append (q, "fork-events+"); | |
4735 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4736 | != AUTO_BOOLEAN_FALSE) | |
4737 | q = remote_query_supported_append (q, "vfork-events+"); | |
4738 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4739 | != AUTO_BOOLEAN_FALSE) | |
4740 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4741 | |
750ce8d1 YQ |
4742 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4743 | q = remote_query_supported_append (q, "vContSupported+"); | |
4744 | ||
65706a29 PA |
4745 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4746 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4747 | ||
f2faf941 PA |
4748 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4749 | q = remote_query_supported_append (q, "no-resumed+"); | |
4750 | ||
b35d5edb PA |
4751 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4752 | the qSupported:xmlRegisters=i386 handling. */ | |
4753 | if (remote_support_xml != NULL) | |
4754 | q = remote_query_supported_append (q, remote_support_xml); | |
4755 | ||
dde08ee1 PA |
4756 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4757 | putpkt (q); | |
82f73884 | 4758 | |
94b0dee1 PA |
4759 | do_cleanups (old_chain); |
4760 | ||
be2a5f71 DJ |
4761 | getpkt (&rs->buf, &rs->buf_size, 0); |
4762 | ||
4763 | /* If an error occured, warn, but do not return - just reset the | |
4764 | buffer to empty and go on to disable features. */ | |
4765 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4766 | == PACKET_ERROR) | |
4767 | { | |
4768 | warning (_("Remote failure reply: %s"), rs->buf); | |
4769 | rs->buf[0] = 0; | |
4770 | } | |
4771 | } | |
4772 | ||
4773 | memset (seen, 0, sizeof (seen)); | |
4774 | ||
4775 | next = rs->buf; | |
4776 | while (*next) | |
4777 | { | |
4778 | enum packet_support is_supported; | |
4779 | char *p, *end, *name_end, *value; | |
4780 | ||
4781 | /* First separate out this item from the rest of the packet. If | |
4782 | there's another item after this, we overwrite the separator | |
4783 | (terminated strings are much easier to work with). */ | |
4784 | p = next; | |
4785 | end = strchr (p, ';'); | |
4786 | if (end == NULL) | |
4787 | { | |
4788 | end = p + strlen (p); | |
4789 | next = end; | |
4790 | } | |
4791 | else | |
4792 | { | |
89be2091 DJ |
4793 | *end = '\0'; |
4794 | next = end + 1; | |
4795 | ||
be2a5f71 DJ |
4796 | if (end == p) |
4797 | { | |
4798 | warning (_("empty item in \"qSupported\" response")); | |
4799 | continue; | |
4800 | } | |
be2a5f71 DJ |
4801 | } |
4802 | ||
4803 | name_end = strchr (p, '='); | |
4804 | if (name_end) | |
4805 | { | |
4806 | /* This is a name=value entry. */ | |
4807 | is_supported = PACKET_ENABLE; | |
4808 | value = name_end + 1; | |
4809 | *name_end = '\0'; | |
4810 | } | |
4811 | else | |
4812 | { | |
4813 | value = NULL; | |
4814 | switch (end[-1]) | |
4815 | { | |
4816 | case '+': | |
4817 | is_supported = PACKET_ENABLE; | |
4818 | break; | |
4819 | ||
4820 | case '-': | |
4821 | is_supported = PACKET_DISABLE; | |
4822 | break; | |
4823 | ||
4824 | case '?': | |
4825 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4826 | break; | |
4827 | ||
4828 | default: | |
3e43a32a MS |
4829 | warning (_("unrecognized item \"%s\" " |
4830 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4831 | continue; |
4832 | } | |
4833 | end[-1] = '\0'; | |
4834 | } | |
4835 | ||
4836 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4837 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4838 | { | |
4839 | const struct protocol_feature *feature; | |
4840 | ||
4841 | seen[i] = 1; | |
4842 | feature = &remote_protocol_features[i]; | |
4843 | feature->func (feature, is_supported, value); | |
4844 | break; | |
4845 | } | |
4846 | } | |
4847 | ||
4848 | /* If we increased the packet size, make sure to increase the global | |
4849 | buffer size also. We delay this until after parsing the entire | |
4850 | qSupported packet, because this is the same buffer we were | |
4851 | parsing. */ | |
4852 | if (rs->buf_size < rs->explicit_packet_size) | |
4853 | { | |
4854 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4855 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4856 | } |
4857 | ||
4858 | /* Handle the defaults for unmentioned features. */ | |
4859 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4860 | if (!seen[i]) | |
4861 | { | |
4862 | const struct protocol_feature *feature; | |
4863 | ||
4864 | feature = &remote_protocol_features[i]; | |
4865 | feature->func (feature, feature->default_support, NULL); | |
4866 | } | |
4867 | } | |
4868 | ||
048094ac PA |
4869 | /* Serial QUIT handler for the remote serial descriptor. |
4870 | ||
4871 | Defers handling a Ctrl-C until we're done with the current | |
4872 | command/response packet sequence, unless: | |
4873 | ||
4874 | - We're setting up the connection. Don't send a remote interrupt | |
4875 | request, as we're not fully synced yet. Quit immediately | |
4876 | instead. | |
4877 | ||
4878 | - The target has been resumed in the foreground | |
4879 | (target_terminal_is_ours is false) with a synchronous resume | |
4880 | packet, and we're blocked waiting for the stop reply, thus a | |
4881 | Ctrl-C should be immediately sent to the target. | |
4882 | ||
4883 | - We get a second Ctrl-C while still within the same serial read or | |
4884 | write. In that case the serial is seemingly wedged --- offer to | |
4885 | quit/disconnect. | |
4886 | ||
4887 | - We see a second Ctrl-C without target response, after having | |
4888 | previously interrupted the target. In that case the target/stub | |
4889 | is probably wedged --- offer to quit/disconnect. | |
4890 | */ | |
4891 | ||
4892 | static void | |
4893 | remote_serial_quit_handler (void) | |
4894 | { | |
4895 | struct remote_state *rs = get_remote_state (); | |
4896 | ||
4897 | if (check_quit_flag ()) | |
4898 | { | |
4899 | /* If we're starting up, we're not fully synced yet. Quit | |
4900 | immediately. */ | |
4901 | if (rs->starting_up) | |
4902 | quit (); | |
4903 | else if (rs->got_ctrlc_during_io) | |
4904 | { | |
4905 | if (query (_("The target is not responding to GDB commands.\n" | |
4906 | "Stop debugging it? "))) | |
4907 | remote_unpush_and_throw (); | |
4908 | } | |
4909 | /* If ^C has already been sent once, offer to disconnect. */ | |
4910 | else if (!target_terminal_is_ours () && rs->ctrlc_pending_p) | |
4911 | interrupt_query (); | |
4912 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
4913 | an interrupt request. */ | |
4914 | else if (!target_terminal_is_ours () && rs->waiting_for_stop_reply) | |
4915 | target_interrupt (inferior_ptid); | |
4916 | else | |
4917 | rs->got_ctrlc_during_io = 1; | |
4918 | } | |
4919 | } | |
4920 | ||
78a095c3 JK |
4921 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4922 | on it so remove them first. */ | |
4923 | ||
4924 | static void | |
4925 | remote_unpush_target (void) | |
4926 | { | |
915ef8b1 | 4927 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 4928 | } |
be2a5f71 | 4929 | |
048094ac PA |
4930 | static void |
4931 | remote_unpush_and_throw (void) | |
4932 | { | |
4933 | remote_unpush_target (); | |
4934 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
4935 | } | |
4936 | ||
c906108c | 4937 | static void |
014f9477 | 4938 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4939 | struct target_ops *target, int extended_p) |
c906108c | 4940 | { |
d01949b6 | 4941 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4942 | |
c906108c | 4943 | if (name == 0) |
8a3fe4f8 | 4944 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4945 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4946 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4947 | |
23860348 | 4948 | /* See FIXME above. */ |
c6ebd6cf | 4949 | if (!target_async_permitted) |
92d1e331 | 4950 | wait_forever_enabled_p = 1; |
6426a772 | 4951 | |
2d717e4f | 4952 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4953 | Ask this question first, before target_preopen has a chance to kill |
4954 | anything. */ | |
5d93a237 | 4955 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4956 | { |
78a095c3 JK |
4957 | if (from_tty |
4958 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4959 | error (_("Still connected.")); |
4960 | } | |
4961 | ||
78a095c3 | 4962 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4963 | target_preopen (from_tty); |
4964 | ||
89be2091 | 4965 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4966 | xfree (rs->last_pass_packet); |
4967 | rs->last_pass_packet = NULL; | |
89be2091 | 4968 | |
9b224c5e PA |
4969 | /* Make sure we send the program signals list the next time we |
4970 | resume. */ | |
5e4a05c4 TT |
4971 | xfree (rs->last_program_signals_packet); |
4972 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4973 | |
ad9a8f3f | 4974 | remote_fileio_reset (); |
1dd41f16 NS |
4975 | reopen_exec_file (); |
4976 | reread_symbols (); | |
4977 | ||
5d93a237 TT |
4978 | rs->remote_desc = remote_serial_open (name); |
4979 | if (!rs->remote_desc) | |
c906108c SS |
4980 | perror_with_name (name); |
4981 | ||
4982 | if (baud_rate != -1) | |
4983 | { | |
5d93a237 | 4984 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4985 | { |
9b74d5d3 KB |
4986 | /* The requested speed could not be set. Error out to |
4987 | top level after closing remote_desc. Take care to | |
4988 | set remote_desc to NULL to avoid closing remote_desc | |
4989 | more than once. */ | |
5d93a237 TT |
4990 | serial_close (rs->remote_desc); |
4991 | rs->remote_desc = NULL; | |
c906108c SS |
4992 | perror_with_name (name); |
4993 | } | |
4994 | } | |
4995 | ||
236af5e3 | 4996 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4997 | serial_raw (rs->remote_desc); |
c906108c SS |
4998 | |
4999 | /* If there is something sitting in the buffer we might take it as a | |
5000 | response to a command, which would be bad. */ | |
5d93a237 | 5001 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5002 | |
5003 | if (from_tty) | |
5004 | { | |
5005 | puts_filtered ("Remote debugging using "); | |
5006 | puts_filtered (name); | |
5007 | puts_filtered ("\n"); | |
5008 | } | |
23860348 | 5009 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 5010 | |
74531fed PA |
5011 | /* Register extra event sources in the event loop. */ |
5012 | remote_async_inferior_event_token | |
5013 | = create_async_event_handler (remote_async_inferior_event_handler, | |
5014 | NULL); | |
5965e028 | 5015 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 5016 | |
be2a5f71 DJ |
5017 | /* Reset the target state; these things will be queried either by |
5018 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5019 | reset_all_packet_configs_support (); |
74531fed | 5020 | rs->cached_wait_status = 0; |
be2a5f71 | 5021 | rs->explicit_packet_size = 0; |
a6f3e723 | 5022 | rs->noack_mode = 0; |
82f73884 | 5023 | rs->extended = extended_p; |
e24a49d8 | 5024 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5025 | rs->ctrlc_pending_p = 0; |
048094ac | 5026 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5027 | |
47f8a51d TT |
5028 | rs->general_thread = not_sent_ptid; |
5029 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5030 | rs->remote_traceframe_number = -1; |
c906108c | 5031 | |
3a00c802 PA |
5032 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5033 | ||
9d1f7ab2 | 5034 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5035 | rs->use_threadinfo_query = 1; |
5036 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5037 | |
80152258 PA |
5038 | readahead_cache_invalidate (); |
5039 | ||
048094ac PA |
5040 | /* Start out by owning the terminal. */ |
5041 | remote_async_terminal_ours_p = 1; | |
5042 | ||
c6ebd6cf | 5043 | if (target_async_permitted) |
92d1e331 | 5044 | { |
92d1e331 DJ |
5045 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5046 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5047 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5048 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5049 | around this. Eventually a mechanism that allows |
92d1e331 | 5050 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5051 | implemented. */ |
92d1e331 DJ |
5052 | wait_forever_enabled_p = 0; |
5053 | } | |
5054 | ||
23860348 | 5055 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5056 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5057 | |
74531fed PA |
5058 | /* Start afresh. */ |
5059 | init_thread_list (); | |
5060 | ||
36918e70 | 5061 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5062 | target (we'd otherwise be in an inconsistent state) and then |
5063 | propogate the error on up the exception chain. This ensures that | |
5064 | the caller doesn't stumble along blindly assuming that the | |
5065 | function succeeded. The CLI doesn't have this problem but other | |
5066 | UI's, such as MI do. | |
36918e70 AC |
5067 | |
5068 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5069 | this function should return an error indication letting the | |
ce2826aa | 5070 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5071 | ``target remote'' is directly wired to this function making that |
5072 | impossible. On a positive note, the CLI side of this problem has | |
5073 | been fixed - the function set_cmd_context() makes it possible for | |
5074 | all the ``target ....'' commands to share a common callback | |
5075 | function. See cli-dump.c. */ | |
109c3e39 | 5076 | { |
2d717e4f | 5077 | |
492d29ea | 5078 | TRY |
04bd08de TT |
5079 | { |
5080 | remote_start_remote (from_tty, target, extended_p); | |
5081 | } | |
492d29ea | 5082 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5083 | { |
c8d104ad PA |
5084 | /* Pop the partially set up target - unless something else did |
5085 | already before throwing the exception. */ | |
5d93a237 | 5086 | if (rs->remote_desc != NULL) |
78a095c3 | 5087 | remote_unpush_target (); |
c6ebd6cf | 5088 | if (target_async_permitted) |
109c3e39 AC |
5089 | wait_forever_enabled_p = 1; |
5090 | throw_exception (ex); | |
5091 | } | |
492d29ea | 5092 | END_CATCH |
109c3e39 | 5093 | } |
c906108c | 5094 | |
f4abbc16 MM |
5095 | remote_btrace_reset (); |
5096 | ||
c6ebd6cf | 5097 | if (target_async_permitted) |
92d1e331 | 5098 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5099 | } |
5100 | ||
de0d863e DB |
5101 | /* Detach the specified process. */ |
5102 | ||
5103 | static void | |
5104 | remote_detach_pid (int pid) | |
5105 | { | |
5106 | struct remote_state *rs = get_remote_state (); | |
5107 | ||
5108 | if (remote_multi_process_p (rs)) | |
5109 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5110 | else | |
5111 | strcpy (rs->buf, "D"); | |
5112 | ||
5113 | putpkt (rs->buf); | |
5114 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5115 | ||
5116 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5117 | ; | |
5118 | else if (rs->buf[0] == '\0') | |
5119 | error (_("Remote doesn't know how to detach")); | |
5120 | else | |
5121 | error (_("Can't detach process.")); | |
5122 | } | |
5123 | ||
5124 | /* This detaches a program to which we previously attached, using | |
5125 | inferior_ptid to identify the process. After this is done, GDB | |
5126 | can be used to debug some other program. We better not have left | |
5127 | any breakpoints in the target program or it'll die when it hits | |
5128 | one. */ | |
c906108c SS |
5129 | |
5130 | static void | |
de0d863e | 5131 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 5132 | { |
82f73884 | 5133 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5134 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5135 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5136 | int is_fork_parent; | |
c906108c SS |
5137 | |
5138 | if (args) | |
8a3fe4f8 | 5139 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 5140 | |
2d717e4f DJ |
5141 | if (!target_has_execution) |
5142 | error (_("No process to detach from.")); | |
5143 | ||
0f48b757 | 5144 | target_announce_detach (from_tty); |
7cee1e54 | 5145 | |
c906108c | 5146 | /* Tell the remote target to detach. */ |
de0d863e | 5147 | remote_detach_pid (pid); |
82f73884 | 5148 | |
8020350c DB |
5149 | /* Exit only if this is the only active inferior. */ |
5150 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5151 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5152 | |
de0d863e DB |
5153 | /* Check to see if we are detaching a fork parent. Note that if we |
5154 | are detaching a fork child, tp == NULL. */ | |
5155 | is_fork_parent = (tp != NULL | |
5156 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5157 | ||
5158 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5159 | breakpoints that should be available for the followed inferior. */ | |
5160 | if (!is_fork_parent) | |
5161 | target_mourn_inferior (); | |
5162 | else | |
5163 | { | |
5164 | inferior_ptid = null_ptid; | |
5165 | detach_inferior (pid); | |
5166 | } | |
2d717e4f DJ |
5167 | } |
5168 | ||
5169 | static void | |
52554a0e | 5170 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5171 | { |
de0d863e | 5172 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
5173 | } |
5174 | ||
5175 | static void | |
52554a0e | 5176 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5177 | { |
de0d863e DB |
5178 | remote_detach_1 (args, from_tty); |
5179 | } | |
5180 | ||
5181 | /* Target follow-fork function for remote targets. On entry, and | |
5182 | at return, the current inferior is the fork parent. | |
5183 | ||
5184 | Note that although this is currently only used for extended-remote, | |
5185 | it is named remote_follow_fork in anticipation of using it for the | |
5186 | remote target as well. */ | |
5187 | ||
5188 | static int | |
5189 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5190 | int detach_fork) | |
5191 | { | |
5192 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5193 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5194 | |
c269dbdb DB |
5195 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5196 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5197 | { |
5198 | /* When following the parent and detaching the child, we detach | |
5199 | the child here. For the case of following the child and | |
5200 | detaching the parent, the detach is done in the target- | |
5201 | independent follow fork code in infrun.c. We can't use | |
5202 | target_detach when detaching an unfollowed child because | |
5203 | the client side doesn't know anything about the child. */ | |
5204 | if (detach_fork && !follow_child) | |
5205 | { | |
5206 | /* Detach the fork child. */ | |
5207 | ptid_t child_ptid; | |
5208 | pid_t child_pid; | |
5209 | ||
5210 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5211 | child_pid = ptid_get_pid (child_ptid); | |
5212 | ||
5213 | remote_detach_pid (child_pid); | |
5214 | detach_inferior (child_pid); | |
5215 | } | |
5216 | } | |
5217 | return 0; | |
c906108c SS |
5218 | } |
5219 | ||
94585166 DB |
5220 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5221 | in the program space of the new inferior. On entry and at return the | |
5222 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5223 | inferior, which may be the same as the exec'ing inferior unless | |
5224 | follow-exec-mode is "new". */ | |
5225 | ||
5226 | static void | |
5227 | remote_follow_exec (struct target_ops *ops, | |
5228 | struct inferior *inf, char *execd_pathname) | |
5229 | { | |
5230 | /* We know that this is a target file name, so if it has the "target:" | |
5231 | prefix we strip it off before saving it in the program space. */ | |
5232 | if (is_target_filename (execd_pathname)) | |
5233 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5234 | ||
5235 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5236 | } | |
5237 | ||
6ad8ae5c DJ |
5238 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5239 | ||
43ff13b4 | 5240 | static void |
fee354ee | 5241 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5242 | { |
43ff13b4 | 5243 | if (args) |
2d717e4f | 5244 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5245 | |
8020350c DB |
5246 | /* Make sure we unpush even the extended remote targets. Calling |
5247 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5248 | unpush if there is more than one inferior left. */ | |
5249 | unpush_target (target); | |
5250 | generic_mourn_inferior (); | |
2d717e4f | 5251 | |
43ff13b4 JM |
5252 | if (from_tty) |
5253 | puts_filtered ("Ending remote debugging.\n"); | |
5254 | } | |
5255 | ||
2d717e4f DJ |
5256 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5257 | be chatty about it. */ | |
5258 | ||
5259 | static void | |
20f796c9 GB |
5260 | extended_remote_attach (struct target_ops *target, const char *args, |
5261 | int from_tty) | |
2d717e4f DJ |
5262 | { |
5263 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5264 | int pid; |
96ef3384 | 5265 | char *wait_status = NULL; |
2d717e4f | 5266 | |
74164c56 | 5267 | pid = parse_pid_to_attach (args); |
2d717e4f | 5268 | |
74164c56 JK |
5269 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5270 | way as in other targets. */ | |
2d717e4f | 5271 | |
4082afcc | 5272 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5273 | error (_("This target does not support attaching to a process")); |
5274 | ||
7cee1e54 PA |
5275 | if (from_tty) |
5276 | { | |
5277 | char *exec_file = get_exec_file (0); | |
5278 | ||
5279 | if (exec_file) | |
5280 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5281 | target_pid_to_str (pid_to_ptid (pid))); | |
5282 | else | |
5283 | printf_unfiltered (_("Attaching to %s\n"), | |
5284 | target_pid_to_str (pid_to_ptid (pid))); | |
5285 | ||
5286 | gdb_flush (gdb_stdout); | |
5287 | } | |
5288 | ||
bba74b36 | 5289 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5290 | putpkt (rs->buf); |
5291 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5292 | ||
4082afcc PA |
5293 | switch (packet_ok (rs->buf, |
5294 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5295 | { |
4082afcc | 5296 | case PACKET_OK: |
6efcd9a8 | 5297 | if (!target_is_non_stop_p ()) |
74531fed PA |
5298 | { |
5299 | /* Save the reply for later. */ | |
224c3ddb | 5300 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5301 | strcpy (wait_status, rs->buf); |
5302 | } | |
5303 | else if (strcmp (rs->buf, "OK") != 0) | |
5304 | error (_("Attaching to %s failed with: %s"), | |
5305 | target_pid_to_str (pid_to_ptid (pid)), | |
5306 | rs->buf); | |
4082afcc PA |
5307 | break; |
5308 | case PACKET_UNKNOWN: | |
5309 | error (_("This target does not support attaching to a process")); | |
5310 | default: | |
5311 | error (_("Attaching to %s failed"), | |
5312 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5313 | } |
2d717e4f | 5314 | |
1b6e6f5c | 5315 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5316 | |
2d717e4f | 5317 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5318 | |
6efcd9a8 | 5319 | if (target_is_non_stop_p ()) |
bad34192 PA |
5320 | { |
5321 | struct thread_info *thread; | |
79d7f229 | 5322 | |
bad34192 | 5323 | /* Get list of threads. */ |
e8032dde | 5324 | remote_update_thread_list (target); |
82f73884 | 5325 | |
bad34192 PA |
5326 | thread = first_thread_of_process (pid); |
5327 | if (thread) | |
5328 | inferior_ptid = thread->ptid; | |
5329 | else | |
5330 | inferior_ptid = pid_to_ptid (pid); | |
5331 | ||
5332 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5333 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5334 | } |
74531fed | 5335 | else |
bad34192 PA |
5336 | { |
5337 | /* Now, if we have thread information, update inferior_ptid. */ | |
5338 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5339 | ||
5340 | /* Add the main thread to the thread list. */ | |
5341 | add_thread_silent (inferior_ptid); | |
5342 | } | |
c0a2216e | 5343 | |
96ef3384 UW |
5344 | /* Next, if the target can specify a description, read it. We do |
5345 | this before anything involving memory or registers. */ | |
5346 | target_find_description (); | |
5347 | ||
6efcd9a8 | 5348 | if (!target_is_non_stop_p ()) |
74531fed PA |
5349 | { |
5350 | /* Use the previously fetched status. */ | |
5351 | gdb_assert (wait_status != NULL); | |
5352 | ||
5353 | if (target_can_async_p ()) | |
5354 | { | |
722247f1 YQ |
5355 | struct notif_event *reply |
5356 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5357 | |
722247f1 | 5358 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5359 | |
6a3753b3 | 5360 | target_async (1); |
74531fed PA |
5361 | } |
5362 | else | |
5363 | { | |
5364 | gdb_assert (wait_status != NULL); | |
5365 | strcpy (rs->buf, wait_status); | |
5366 | rs->cached_wait_status = 1; | |
5367 | } | |
5368 | } | |
5369 | else | |
5370 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5371 | } |
5372 | ||
b9c1d481 AS |
5373 | /* Implementation of the to_post_attach method. */ |
5374 | ||
5375 | static void | |
5376 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5377 | { | |
6efcd9a8 PA |
5378 | /* Get text, data & bss offsets. */ |
5379 | get_offsets (); | |
5380 | ||
b9c1d481 AS |
5381 | /* In certain cases GDB might not have had the chance to start |
5382 | symbol lookup up until now. This could happen if the debugged | |
5383 | binary is not using shared libraries, the vsyscall page is not | |
5384 | present (on Linux) and the binary itself hadn't changed since the | |
5385 | debugging process was started. */ | |
5386 | if (symfile_objfile != NULL) | |
5387 | remote_check_symbols(); | |
5388 | } | |
5389 | ||
c906108c | 5390 | \f |
506fb367 DJ |
5391 | /* Check for the availability of vCont. This function should also check |
5392 | the response. */ | |
c906108c SS |
5393 | |
5394 | static void | |
6d820c5c | 5395 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5396 | { |
2e9f7625 | 5397 | char *buf; |
6d820c5c | 5398 | |
2e9f7625 DJ |
5399 | strcpy (rs->buf, "vCont?"); |
5400 | putpkt (rs->buf); | |
6d820c5c | 5401 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5402 | buf = rs->buf; |
c906108c | 5403 | |
506fb367 | 5404 | /* Make sure that the features we assume are supported. */ |
61012eef | 5405 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5406 | { |
5407 | char *p = &buf[5]; | |
750ce8d1 | 5408 | int support_c, support_C; |
506fb367 | 5409 | |
750ce8d1 YQ |
5410 | rs->supports_vCont.s = 0; |
5411 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5412 | support_c = 0; |
5413 | support_C = 0; | |
d458bd84 | 5414 | rs->supports_vCont.t = 0; |
c1e36e3e | 5415 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5416 | while (p && *p == ';') |
5417 | { | |
5418 | p++; | |
5419 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5420 | rs->supports_vCont.s = 1; |
506fb367 | 5421 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5422 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5423 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5424 | support_c = 1; | |
5425 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5426 | support_C = 1; | |
74531fed | 5427 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5428 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5429 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5430 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5431 | |
5432 | p = strchr (p, ';'); | |
5433 | } | |
c906108c | 5434 | |
750ce8d1 YQ |
5435 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5436 | BUF will make packet_ok disable the packet. */ | |
5437 | if (!support_c || !support_C) | |
506fb367 DJ |
5438 | buf[0] = 0; |
5439 | } | |
c906108c | 5440 | |
444abaca | 5441 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5442 | } |
c906108c | 5443 | |
0d8f58ca PA |
5444 | /* Helper function for building "vCont" resumptions. Write a |
5445 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5446 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5447 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5448 | resumed thread should be single-stepped and/or signalled. If PTID | |
5449 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5450 | represents a process, then all threads of the process are resumed; | |
5451 | the thread to be stepped and/or signalled is given in the global | |
5452 | INFERIOR_PTID. */ | |
5453 | ||
5454 | static char * | |
5455 | append_resumption (char *p, char *endp, | |
2ea28649 | 5456 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5457 | { |
5458 | struct remote_state *rs = get_remote_state (); | |
5459 | ||
a493e3e2 | 5460 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5461 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5462 | else if (step |
5463 | /* GDB is willing to range step. */ | |
5464 | && use_range_stepping | |
5465 | /* Target supports range stepping. */ | |
5466 | && rs->supports_vCont.r | |
5467 | /* We don't currently support range stepping multiple | |
5468 | threads with a wildcard (though the protocol allows it, | |
5469 | so stubs shouldn't make an active effort to forbid | |
5470 | it). */ | |
5471 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5472 | { | |
5473 | struct thread_info *tp; | |
5474 | ||
5475 | if (ptid_equal (ptid, minus_one_ptid)) | |
5476 | { | |
5477 | /* If we don't know about the target thread's tid, then | |
5478 | we're resuming magic_null_ptid (see caller). */ | |
5479 | tp = find_thread_ptid (magic_null_ptid); | |
5480 | } | |
5481 | else | |
5482 | tp = find_thread_ptid (ptid); | |
5483 | gdb_assert (tp != NULL); | |
5484 | ||
5485 | if (tp->control.may_range_step) | |
5486 | { | |
5487 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5488 | ||
5489 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5490 | phex_nz (tp->control.step_range_start, | |
5491 | addr_size), | |
5492 | phex_nz (tp->control.step_range_end, | |
5493 | addr_size)); | |
5494 | } | |
5495 | else | |
5496 | p += xsnprintf (p, endp - p, ";s"); | |
5497 | } | |
0d8f58ca PA |
5498 | else if (step) |
5499 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5500 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5501 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5502 | else | |
5503 | p += xsnprintf (p, endp - p, ";c"); | |
5504 | ||
5505 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5506 | { | |
5507 | ptid_t nptid; | |
5508 | ||
5509 | /* All (-1) threads of process. */ | |
ba348170 | 5510 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5511 | |
5512 | p += xsnprintf (p, endp - p, ":"); | |
5513 | p = write_ptid (p, endp, nptid); | |
5514 | } | |
5515 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5516 | { | |
5517 | p += xsnprintf (p, endp - p, ":"); | |
5518 | p = write_ptid (p, endp, ptid); | |
5519 | } | |
5520 | ||
5521 | return p; | |
5522 | } | |
5523 | ||
799a2abe PA |
5524 | /* Clear the thread's private info on resume. */ |
5525 | ||
5526 | static void | |
5527 | resume_clear_thread_private_info (struct thread_info *thread) | |
5528 | { | |
5529 | if (thread->priv != NULL) | |
5530 | { | |
5531 | thread->priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5532 | thread->priv->watch_data_address = 0; | |
5533 | } | |
5534 | } | |
5535 | ||
e5ef252a PA |
5536 | /* Append a vCont continue-with-signal action for threads that have a |
5537 | non-zero stop signal. */ | |
5538 | ||
5539 | static char * | |
5540 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5541 | { | |
5542 | struct thread_info *thread; | |
5543 | ||
034f788c | 5544 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5545 | if (ptid_match (thread->ptid, ptid) |
5546 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5547 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5548 | { |
5549 | p = append_resumption (p, endp, thread->ptid, | |
5550 | 0, thread->suspend.stop_signal); | |
5551 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5552 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5553 | } |
5554 | ||
5555 | return p; | |
5556 | } | |
5557 | ||
506fb367 DJ |
5558 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5559 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5560 | resumed thread should be single-stepped and/or signalled. If PTID |
5561 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5562 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5563 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5564 | |
506fb367 DJ |
5565 | This function issues a strict subset of all possible vCont commands at the |
5566 | moment. */ | |
44eaed12 | 5567 | |
506fb367 | 5568 | static int |
2ea28649 | 5569 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5570 | { |
5571 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5572 | char *p; |
5573 | char *endp; | |
44eaed12 | 5574 | |
4082afcc | 5575 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5576 | remote_vcont_probe (rs); |
44eaed12 | 5577 | |
4082afcc | 5578 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5579 | return 0; |
44eaed12 | 5580 | |
82f73884 PA |
5581 | p = rs->buf; |
5582 | endp = rs->buf + get_remote_packet_size (); | |
5583 | ||
506fb367 DJ |
5584 | /* If we could generate a wider range of packets, we'd have to worry |
5585 | about overflowing BUF. Should there be a generic | |
5586 | "multi-part-packet" packet? */ | |
5587 | ||
0d8f58ca PA |
5588 | p += xsnprintf (p, endp - p, "vCont"); |
5589 | ||
79d7f229 | 5590 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5591 | { |
79d7f229 PA |
5592 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5593 | so we don't have any TID numbers the inferior will | |
5594 | understand. Make sure to only send forms that do not specify | |
5595 | a TID. */ | |
a9cbf802 | 5596 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5597 | } |
0d8f58ca | 5598 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5599 | { |
0d8f58ca PA |
5600 | /* Resume all threads (of all processes, or of a single |
5601 | process), with preference for INFERIOR_PTID. This assumes | |
5602 | inferior_ptid belongs to the set of all threads we are about | |
5603 | to resume. */ | |
a493e3e2 | 5604 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5605 | { |
0d8f58ca PA |
5606 | /* Step inferior_ptid, with or without signal. */ |
5607 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5608 | } |
0d8f58ca | 5609 | |
e5ef252a PA |
5610 | /* Also pass down any pending signaled resumption for other |
5611 | threads not the current. */ | |
5612 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5613 | ||
0d8f58ca | 5614 | /* And continue others without a signal. */ |
a493e3e2 | 5615 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5616 | } |
5617 | else | |
506fb367 DJ |
5618 | { |
5619 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5620 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5621 | } |
c906108c | 5622 | |
82f73884 PA |
5623 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5624 | putpkt (rs->buf); | |
506fb367 | 5625 | |
6efcd9a8 | 5626 | if (target_is_non_stop_p ()) |
74531fed PA |
5627 | { |
5628 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5629 | reply will be reported asynchronously by means of a `%Stop' | |
5630 | notification. */ | |
5631 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5632 | if (strcmp (rs->buf, "OK") != 0) | |
5633 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5634 | } | |
5635 | ||
506fb367 | 5636 | return 1; |
c906108c | 5637 | } |
43ff13b4 | 5638 | |
506fb367 DJ |
5639 | /* Tell the remote machine to resume. */ |
5640 | ||
43ff13b4 | 5641 | static void |
28439f5e | 5642 | remote_resume (struct target_ops *ops, |
2ea28649 | 5643 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5644 | { |
d01949b6 | 5645 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5646 | char *buf; |
799a2abe | 5647 | struct thread_info *thread; |
43ff13b4 | 5648 | |
722247f1 YQ |
5649 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5650 | (explained in remote-notif.c:handle_notification) so | |
5651 | remote_notif_process is not called. We need find a place where | |
5652 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5653 | before resuming inferior, because inferior was stopped and no RSP | |
5654 | traffic at that moment. */ | |
6efcd9a8 | 5655 | if (!target_is_non_stop_p ()) |
5965e028 | 5656 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5657 | |
b73be471 | 5658 | rs->last_sent_signal = siggnal; |
280ceea3 | 5659 | rs->last_sent_step = step; |
43ff13b4 | 5660 | |
3a00c802 PA |
5661 | rs->last_resume_exec_dir = execution_direction; |
5662 | ||
506fb367 | 5663 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5664 | /* No reverse support (yet) for vCont. */ |
5665 | if (execution_direction != EXEC_REVERSE) | |
5666 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5667 | goto done; | |
506fb367 | 5668 | |
79d7f229 PA |
5669 | /* All other supported resume packets do use Hc, so set the continue |
5670 | thread. */ | |
5671 | if (ptid_equal (ptid, minus_one_ptid)) | |
5672 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5673 | else |
79d7f229 | 5674 | set_continue_thread (ptid); |
506fb367 | 5675 | |
799a2abe PA |
5676 | ALL_NON_EXITED_THREADS (thread) |
5677 | resume_clear_thread_private_info (thread); | |
5678 | ||
2e9f7625 | 5679 | buf = rs->buf; |
b2175913 MS |
5680 | if (execution_direction == EXEC_REVERSE) |
5681 | { | |
5682 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5683 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5684 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5685 | siggnal); |
40ab02ce | 5686 | |
4082afcc | 5687 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5688 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5689 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5690 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5691 | |
b2175913 MS |
5692 | strcpy (buf, step ? "bs" : "bc"); |
5693 | } | |
a493e3e2 | 5694 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5695 | { |
5696 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5697 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5698 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5699 | buf[3] = '\0'; |
5700 | } | |
5701 | else | |
c5aa993b | 5702 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5703 | |
44eaed12 | 5704 | putpkt (buf); |
43ff13b4 | 5705 | |
75c99385 | 5706 | done: |
2acceee2 | 5707 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5708 | with the event loop. NOTE: this is the one place where all the |
5709 | execution commands end up. We could alternatively do this in each | |
23860348 | 5710 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5711 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5712 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5713 | NOT asynchronously. */ |
362646f5 | 5714 | if (target_can_async_p ()) |
6a3753b3 | 5715 | target_async (1); |
e24a49d8 PA |
5716 | |
5717 | /* We've just told the target to resume. The remote server will | |
5718 | wait for the inferior to stop, and then send a stop reply. In | |
5719 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5720 | because the stub wouldn't be ready to process it. This applies |
5721 | only to the base all-stop protocol, however. In non-stop (which | |
5722 | only supports vCont), the stub replies with an "OK", and is | |
5723 | immediate able to process further serial input. */ | |
6efcd9a8 | 5724 | if (!target_is_non_stop_p ()) |
74531fed | 5725 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5726 | } |
c906108c | 5727 | \f |
43ff13b4 | 5728 | |
74531fed PA |
5729 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5730 | thread, all threads of a remote process, or all threads of all | |
5731 | processes. */ | |
5732 | ||
5733 | static void | |
5734 | remote_stop_ns (ptid_t ptid) | |
5735 | { | |
5736 | struct remote_state *rs = get_remote_state (); | |
5737 | char *p = rs->buf; | |
5738 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5739 | |
4082afcc | 5740 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5741 | remote_vcont_probe (rs); |
5742 | ||
d458bd84 | 5743 | if (!rs->supports_vCont.t) |
74531fed PA |
5744 | error (_("Remote server does not support stopping threads")); |
5745 | ||
f91d3df5 PA |
5746 | if (ptid_equal (ptid, minus_one_ptid) |
5747 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5748 | p += xsnprintf (p, endp - p, "vCont;t"); |
5749 | else | |
5750 | { | |
5751 | ptid_t nptid; | |
5752 | ||
74531fed PA |
5753 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5754 | ||
5755 | if (ptid_is_pid (ptid)) | |
5756 | /* All (-1) threads of process. */ | |
ba348170 | 5757 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5758 | else |
5759 | { | |
5760 | /* Small optimization: if we already have a stop reply for | |
5761 | this thread, no use in telling the stub we want this | |
5762 | stopped. */ | |
5763 | if (peek_stop_reply (ptid)) | |
5764 | return; | |
5765 | ||
5766 | nptid = ptid; | |
5767 | } | |
5768 | ||
a9cbf802 | 5769 | write_ptid (p, endp, nptid); |
74531fed PA |
5770 | } |
5771 | ||
5772 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5773 | come in asynchronously by notification. */ | |
5774 | putpkt (rs->buf); | |
5775 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5776 | if (strcmp (rs->buf, "OK") != 0) | |
5777 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5778 | } | |
5779 | ||
bfedc46a PA |
5780 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
5781 | interrupt the remote target. It is undefined which thread of which | |
5782 | process reports the interrupt. */ | |
74531fed PA |
5783 | |
5784 | static void | |
de979965 | 5785 | remote_interrupt_as (void) |
74531fed PA |
5786 | { |
5787 | struct remote_state *rs = get_remote_state (); | |
5788 | ||
3a29589a DJ |
5789 | rs->ctrlc_pending_p = 1; |
5790 | ||
74531fed PA |
5791 | /* If the inferior is stopped already, but the core didn't know |
5792 | about it yet, just ignore the request. The cached wait status | |
5793 | will be collected in remote_wait. */ | |
5794 | if (rs->cached_wait_status) | |
5795 | return; | |
5796 | ||
9a7071a8 JB |
5797 | /* Send interrupt_sequence to remote target. */ |
5798 | send_interrupt_sequence (); | |
74531fed PA |
5799 | } |
5800 | ||
de979965 PA |
5801 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
5802 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
5803 | reports the interrupt. Throws an error if the packet is not |
5804 | supported by the server. */ | |
de979965 | 5805 | |
e42de8c7 | 5806 | static void |
de979965 PA |
5807 | remote_interrupt_ns (void) |
5808 | { | |
5809 | struct remote_state *rs = get_remote_state (); | |
5810 | char *p = rs->buf; | |
5811 | char *endp = rs->buf + get_remote_packet_size (); | |
5812 | ||
5813 | xsnprintf (p, endp - p, "vCtrlC"); | |
5814 | ||
5815 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5816 | come in asynchronously by notification. */ | |
5817 | putpkt (rs->buf); | |
5818 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5819 | ||
5820 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
5821 | { | |
5822 | case PACKET_OK: | |
5823 | break; | |
5824 | case PACKET_UNKNOWN: | |
e42de8c7 | 5825 | error (_("No support for interrupting the remote target.")); |
de979965 PA |
5826 | case PACKET_ERROR: |
5827 | error (_("Interrupting target failed: %s"), rs->buf); | |
5828 | } | |
de979965 PA |
5829 | } |
5830 | ||
bfedc46a | 5831 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 5832 | |
c906108c | 5833 | static void |
1eab8a48 | 5834 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5835 | { |
7a292a7a | 5836 | if (remote_debug) |
0f71a2f6 | 5837 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5838 | |
6efcd9a8 | 5839 | if (target_is_non_stop_p ()) |
74531fed | 5840 | remote_stop_ns (ptid); |
c906108c | 5841 | else |
bfedc46a PA |
5842 | { |
5843 | /* We don't currently have a way to transparently pause the | |
5844 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 5845 | remote_interrupt_as (); |
bfedc46a PA |
5846 | } |
5847 | } | |
5848 | ||
5849 | /* Implement the to_interrupt function for the remote targets. */ | |
5850 | ||
5851 | static void | |
5852 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
5853 | { | |
e42de8c7 PA |
5854 | struct remote_state *rs = get_remote_state (); |
5855 | ||
bfedc46a PA |
5856 | if (remote_debug) |
5857 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
5858 | ||
e42de8c7 PA |
5859 | if (target_is_non_stop_p ()) |
5860 | remote_interrupt_ns (); | |
bfedc46a | 5861 | else |
e42de8c7 | 5862 | remote_interrupt_as (); |
c906108c SS |
5863 | } |
5864 | ||
93692b58 PA |
5865 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
5866 | ||
5867 | static void | |
5868 | remote_pass_ctrlc (struct target_ops *self) | |
5869 | { | |
5870 | struct remote_state *rs = get_remote_state (); | |
5871 | ||
5872 | if (remote_debug) | |
5873 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
5874 | ||
5875 | /* If we're starting up, we're not fully synced yet. Quit | |
5876 | immediately. */ | |
5877 | if (rs->starting_up) | |
5878 | quit (); | |
5879 | /* If ^C has already been sent once, offer to disconnect. */ | |
5880 | else if (rs->ctrlc_pending_p) | |
5881 | interrupt_query (); | |
5882 | else | |
5883 | target_interrupt (inferior_ptid); | |
5884 | } | |
5885 | ||
c906108c SS |
5886 | /* Ask the user what to do when an interrupt is received. */ |
5887 | ||
5888 | static void | |
fba45db2 | 5889 | interrupt_query (void) |
c906108c | 5890 | { |
abc56d60 | 5891 | struct remote_state *rs = get_remote_state (); |
c906108c | 5892 | |
abc56d60 | 5893 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 5894 | { |
abc56d60 PA |
5895 | if (query (_("The target is not responding to interrupt requests.\n" |
5896 | "Stop debugging it? "))) | |
74531fed | 5897 | { |
78a095c3 | 5898 | remote_unpush_target (); |
abc56d60 | 5899 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
5900 | } |
5901 | } | |
abc56d60 PA |
5902 | else |
5903 | { | |
5904 | if (query (_("Interrupted while waiting for the program.\n" | |
5905 | "Give up waiting? "))) | |
5906 | quit (); | |
5907 | } | |
c906108c SS |
5908 | } |
5909 | ||
6426a772 JM |
5910 | /* Enable/disable target terminal ownership. Most targets can use |
5911 | terminal groups to control terminal ownership. Remote targets are | |
5912 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5913 | is required. */ |
6426a772 JM |
5914 | |
5915 | static void | |
d2f640d4 | 5916 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5917 | { |
d9d2d8b6 PA |
5918 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5919 | idempotent. The event-loop GDB talking to an asynchronous target | |
5920 | with a synchronous command calls this function from both | |
5921 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5922 | transfer the terminal to the target when it shouldn't this guard | |
5923 | can go away. */ | |
6426a772 JM |
5924 | if (!remote_async_terminal_ours_p) |
5925 | return; | |
6426a772 | 5926 | remote_async_terminal_ours_p = 0; |
6426a772 JM |
5927 | /* NOTE: At this point we could also register our selves as the |
5928 | recipient of all input. Any characters typed could then be | |
23860348 | 5929 | passed on down to the target. */ |
6426a772 JM |
5930 | } |
5931 | ||
5932 | static void | |
e3594fd1 | 5933 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5934 | { |
75c99385 | 5935 | /* See FIXME in remote_terminal_inferior. */ |
6426a772 JM |
5936 | if (remote_async_terminal_ours_p) |
5937 | return; | |
6426a772 JM |
5938 | remote_async_terminal_ours_p = 1; |
5939 | } | |
5940 | ||
176a6961 | 5941 | static void |
917317f4 | 5942 | remote_console_output (char *msg) |
c906108c SS |
5943 | { |
5944 | char *p; | |
5945 | ||
c5aa993b | 5946 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5947 | { |
5948 | char tb[2]; | |
5949 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5950 | |
c906108c SS |
5951 | tb[0] = c; |
5952 | tb[1] = 0; | |
43ff13b4 | 5953 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5954 | } |
00db5b94 PA |
5955 | gdb_flush (gdb_stdtarg); |
5956 | } | |
74531fed PA |
5957 | |
5958 | typedef struct cached_reg | |
5959 | { | |
5960 | int num; | |
5961 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5962 | } cached_reg_t; | |
5963 | ||
5964 | DEF_VEC_O(cached_reg_t); | |
5965 | ||
722247f1 | 5966 | typedef struct stop_reply |
74531fed | 5967 | { |
722247f1 | 5968 | struct notif_event base; |
74531fed | 5969 | |
722247f1 | 5970 | /* The identifier of the thread about this event */ |
74531fed PA |
5971 | ptid_t ptid; |
5972 | ||
340e3c99 | 5973 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5974 | connection, represented by a remote_state object, is closed, |
5975 | all the associated stop_reply events should be released. */ | |
5976 | struct remote_state *rs; | |
5977 | ||
74531fed PA |
5978 | struct target_waitstatus ws; |
5979 | ||
15148d6a PA |
5980 | /* Expedited registers. This makes remote debugging a bit more |
5981 | efficient for those targets that provide critical registers as | |
5982 | part of their normal status mechanism (as another roundtrip to | |
5983 | fetch them is avoided). */ | |
74531fed PA |
5984 | VEC(cached_reg_t) *regcache; |
5985 | ||
f7e6eed5 PA |
5986 | enum target_stop_reason stop_reason; |
5987 | ||
74531fed PA |
5988 | CORE_ADDR watch_data_address; |
5989 | ||
dc146f7c | 5990 | int core; |
722247f1 | 5991 | } *stop_reply_p; |
a744cf53 | 5992 | |
722247f1 YQ |
5993 | DECLARE_QUEUE_P (stop_reply_p); |
5994 | DEFINE_QUEUE_P (stop_reply_p); | |
5995 | /* The list of already fetched and acknowledged stop events. This | |
5996 | queue is used for notification Stop, and other notifications | |
5997 | don't need queue for their events, because the notification events | |
5998 | of Stop can't be consumed immediately, so that events should be | |
5999 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6000 | time. Other notifications can consume their events immediately, | |
6001 | so queue is not needed for them. */ | |
6002 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6003 | |
6004 | static void | |
6005 | stop_reply_xfree (struct stop_reply *r) | |
6006 | { | |
f48ff2a7 | 6007 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6008 | } |
6009 | ||
221e1a37 PA |
6010 | /* Return the length of the stop reply queue. */ |
6011 | ||
6012 | static int | |
6013 | stop_reply_queue_length (void) | |
6014 | { | |
6015 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6016 | } | |
6017 | ||
722247f1 YQ |
6018 | static void |
6019 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6020 | struct notif_event *event) | |
6021 | { | |
6022 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6023 | } | |
6024 | ||
6025 | static void | |
6026 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6027 | struct notif_event *event) | |
6028 | { | |
6029 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6030 | ||
6031 | /* acknowledge */ | |
6032 | putpkt ((char *) self->ack_command); | |
6033 | ||
6034 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6035 | /* We got an unknown stop reply. */ | |
6036 | error (_("Unknown stop reply")); | |
6037 | ||
6038 | push_stop_reply (stop_reply); | |
6039 | } | |
6040 | ||
6041 | static int | |
6042 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6043 | { | |
6044 | /* We can't get pending events in remote_notif_process for | |
6045 | notification stop, and we have to do this in remote_wait_ns | |
6046 | instead. If we fetch all queued events from stub, remote stub | |
6047 | may exit and we have no chance to process them back in | |
6048 | remote_wait_ns. */ | |
6049 | mark_async_event_handler (remote_async_inferior_event_token); | |
6050 | return 0; | |
6051 | } | |
6052 | ||
6053 | static void | |
6054 | stop_reply_dtr (struct notif_event *event) | |
6055 | { | |
6056 | struct stop_reply *r = (struct stop_reply *) event; | |
6057 | ||
6058 | VEC_free (cached_reg_t, r->regcache); | |
6059 | } | |
6060 | ||
6061 | static struct notif_event * | |
6062 | remote_notif_stop_alloc_reply (void) | |
6063 | { | |
8d749320 SM |
6064 | /* We cast to a pointer to the "base class". */ |
6065 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6066 | |
6067 | r->dtr = stop_reply_dtr; | |
6068 | ||
6069 | return r; | |
6070 | } | |
6071 | ||
6072 | /* A client of notification Stop. */ | |
6073 | ||
6074 | struct notif_client notif_client_stop = | |
6075 | { | |
6076 | "Stop", | |
6077 | "vStopped", | |
6078 | remote_notif_stop_parse, | |
6079 | remote_notif_stop_ack, | |
6080 | remote_notif_stop_can_get_pending_events, | |
6081 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6082 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6083 | }; |
6084 | ||
6085 | /* A parameter to pass data in and out. */ | |
6086 | ||
6087 | struct queue_iter_param | |
6088 | { | |
6089 | void *input; | |
6090 | struct stop_reply *output; | |
6091 | }; | |
6092 | ||
cbb8991c DB |
6093 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
6094 | the pid of the process that owns the threads we want to check, or | |
6095 | -1 if we want to check all threads. */ | |
6096 | ||
6097 | static int | |
6098 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6099 | ptid_t thread_ptid) | |
6100 | { | |
6101 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6102 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6103 | { | |
6104 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6105 | return 1; | |
6106 | } | |
6107 | ||
6108 | return 0; | |
6109 | } | |
6110 | ||
6111 | /* Check whether EVENT is a fork event, and if it is, remove the | |
6112 | fork child from the context list passed in DATA. */ | |
6113 | ||
6114 | static int | |
6115 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6116 | QUEUE_ITER (stop_reply_p) *iter, | |
6117 | stop_reply_p event, | |
6118 | void *data) | |
6119 | { | |
19ba03f4 SM |
6120 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6121 | struct threads_listing_context *context | |
6122 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6123 | |
6124 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6125 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6126 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6127 | threads_listing_context_remove (&event->ws, context); | |
cbb8991c DB |
6128 | |
6129 | return 1; | |
6130 | } | |
6131 | ||
6132 | /* If CONTEXT contains any fork child threads that have not been | |
6133 | reported yet, remove them from the CONTEXT list. If such a | |
6134 | thread exists it is because we are stopped at a fork catchpoint | |
6135 | and have not yet called follow_fork, which will set up the | |
6136 | host-side data structures for the new process. */ | |
6137 | ||
6138 | static void | |
6139 | remove_new_fork_children (struct threads_listing_context *context) | |
6140 | { | |
6141 | struct thread_info * thread; | |
6142 | int pid = -1; | |
6143 | struct notif_client *notif = ¬if_client_stop; | |
6144 | struct queue_iter_param param; | |
6145 | ||
6146 | /* For any threads stopped at a fork event, remove the corresponding | |
6147 | fork child threads from the CONTEXT list. */ | |
6148 | ALL_NON_EXITED_THREADS (thread) | |
6149 | { | |
4041ed77 DB |
6150 | struct target_waitstatus *ws; |
6151 | ||
6152 | if (thread->suspend.waitstatus_pending_p) | |
6153 | ws = &thread->suspend.waitstatus; | |
6154 | else | |
6155 | ws = &thread->pending_follow; | |
cbb8991c DB |
6156 | |
6157 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
6158 | { | |
6159 | threads_listing_context_remove (ws, context); | |
6160 | } | |
6161 | } | |
6162 | ||
6163 | /* Check for any pending fork events (not reported or processed yet) | |
6164 | in process PID and remove those fork child threads from the | |
6165 | CONTEXT list as well. */ | |
6166 | remote_notif_get_pending_events (notif); | |
6167 | param.input = context; | |
6168 | param.output = NULL; | |
6169 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6170 | remove_child_of_pending_fork, ¶m); | |
6171 | } | |
6172 | ||
f48ff2a7 YQ |
6173 | /* Remove stop replies in the queue if its pid is equal to the given |
6174 | inferior's pid. */ | |
722247f1 YQ |
6175 | |
6176 | static int | |
f48ff2a7 YQ |
6177 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6178 | QUEUE_ITER (stop_reply_p) *iter, | |
6179 | stop_reply_p event, | |
6180 | void *data) | |
722247f1 | 6181 | { |
19ba03f4 SM |
6182 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6183 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6184 | |
f48ff2a7 | 6185 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6186 | { |
6187 | stop_reply_xfree (event); | |
6188 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6189 | } | |
6190 | ||
6191 | return 1; | |
6192 | } | |
6193 | ||
f48ff2a7 | 6194 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6195 | |
74531fed | 6196 | static void |
5f4cf0bb | 6197 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6198 | { |
722247f1 | 6199 | struct queue_iter_param param; |
f48ff2a7 YQ |
6200 | struct stop_reply *reply; |
6201 | struct remote_state *rs = get_remote_state (); | |
6202 | struct remote_notif_state *rns = rs->notif_state; | |
6203 | ||
6204 | /* This function can be notified when an inferior exists. When the | |
6205 | target is not remote, the notification state is NULL. */ | |
6206 | if (rs->remote_desc == NULL) | |
6207 | return; | |
6208 | ||
6209 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6210 | |
74531fed | 6211 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6212 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6213 | { |
722247f1 | 6214 | stop_reply_xfree (reply); |
f48ff2a7 | 6215 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6216 | } |
c906108c | 6217 | |
722247f1 YQ |
6218 | param.input = inf; |
6219 | param.output = NULL; | |
74531fed PA |
6220 | /* Discard the stop replies we have already pulled with |
6221 | vStopped. */ | |
722247f1 | 6222 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6223 | remove_stop_reply_for_inferior, ¶m); |
6224 | } | |
6225 | ||
bcc75809 YQ |
6226 | /* If its remote state is equal to the given remote state, |
6227 | remove EVENT from the stop reply queue. */ | |
6228 | ||
6229 | static int | |
6230 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6231 | QUEUE_ITER (stop_reply_p) *iter, | |
6232 | stop_reply_p event, | |
6233 | void *data) | |
6234 | { | |
19ba03f4 SM |
6235 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6236 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6237 | |
6238 | if (event->rs == rs) | |
6239 | { | |
6240 | stop_reply_xfree (event); | |
6241 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6242 | } | |
6243 | ||
6244 | return 1; | |
6245 | } | |
6246 | ||
6247 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6248 | |
6249 | static void | |
bcc75809 | 6250 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6251 | { |
6252 | struct queue_iter_param param; | |
6253 | ||
bcc75809 | 6254 | param.input = rs; |
f48ff2a7 YQ |
6255 | param.output = NULL; |
6256 | /* Discard the stop replies we have already pulled with | |
6257 | vStopped. */ | |
6258 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6259 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6260 | } |
74531fed | 6261 | |
722247f1 YQ |
6262 | /* A parameter to pass data in and out. */ |
6263 | ||
6264 | static int | |
6265 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6266 | QUEUE_ITER (stop_reply_p) *iter, | |
6267 | stop_reply_p event, | |
6268 | void *data) | |
6269 | { | |
19ba03f4 SM |
6270 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6271 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6272 | |
6273 | if (ptid_match (event->ptid, *ptid)) | |
6274 | { | |
6275 | param->output = event; | |
6276 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6277 | return 0; | |
c8e38a49 | 6278 | } |
722247f1 YQ |
6279 | |
6280 | return 1; | |
74531fed | 6281 | } |
43ff13b4 | 6282 | |
722247f1 YQ |
6283 | /* Remove the first reply in 'stop_reply_queue' which matches |
6284 | PTID. */ | |
2e9f7625 | 6285 | |
722247f1 YQ |
6286 | static struct stop_reply * |
6287 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6288 | { |
722247f1 YQ |
6289 | struct queue_iter_param param; |
6290 | ||
6291 | param.input = &ptid; | |
6292 | param.output = NULL; | |
6293 | ||
6294 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6295 | remote_notif_remove_once_on_match, ¶m); | |
6296 | if (notif_debug) | |
6297 | fprintf_unfiltered (gdb_stdlog, | |
6298 | "notif: discard queued event: 'Stop' in %s\n", | |
6299 | target_pid_to_str (ptid)); | |
a744cf53 | 6300 | |
722247f1 | 6301 | return param.output; |
74531fed | 6302 | } |
75c99385 | 6303 | |
74531fed PA |
6304 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6305 | remove it from the queue, and return it. Returns NULL if none is | |
6306 | found. If there are still queued events left to process, tell the | |
6307 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6308 | |
74531fed PA |
6309 | static struct stop_reply * |
6310 | queued_stop_reply (ptid_t ptid) | |
6311 | { | |
722247f1 | 6312 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6313 | |
722247f1 | 6314 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6315 | /* There's still at least an event left. */ |
6316 | mark_async_event_handler (remote_async_inferior_event_token); | |
6317 | ||
722247f1 | 6318 | return r; |
74531fed PA |
6319 | } |
6320 | ||
6321 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6322 | know that we now have at least one queued event left to pass to the | |
6323 | core side, tell the event loop to get back to target_wait soon. */ | |
6324 | ||
6325 | static void | |
6326 | push_stop_reply (struct stop_reply *new_event) | |
6327 | { | |
722247f1 | 6328 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6329 | |
722247f1 YQ |
6330 | if (notif_debug) |
6331 | fprintf_unfiltered (gdb_stdlog, | |
6332 | "notif: push 'Stop' %s to queue %d\n", | |
6333 | target_pid_to_str (new_event->ptid), | |
6334 | QUEUE_length (stop_reply_p, | |
6335 | stop_reply_queue)); | |
74531fed PA |
6336 | |
6337 | mark_async_event_handler (remote_async_inferior_event_token); | |
6338 | } | |
6339 | ||
722247f1 YQ |
6340 | static int |
6341 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6342 | QUEUE_ITER (stop_reply_p) *iter, | |
6343 | struct stop_reply *event, | |
6344 | void *data) | |
6345 | { | |
19ba03f4 | 6346 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6347 | |
6348 | return !(ptid_equal (*ptid, event->ptid) | |
6349 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6350 | } | |
6351 | ||
74531fed PA |
6352 | /* Returns true if we have a stop reply for PTID. */ |
6353 | ||
6354 | static int | |
6355 | peek_stop_reply (ptid_t ptid) | |
6356 | { | |
722247f1 YQ |
6357 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6358 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6359 | } |
6360 | ||
26d56a93 SL |
6361 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6362 | starting with P and ending with PEND matches PREFIX. */ | |
6363 | ||
6364 | static int | |
6365 | strprefix (const char *p, const char *pend, const char *prefix) | |
6366 | { | |
6367 | for ( ; p < pend; p++, prefix++) | |
6368 | if (*p != *prefix) | |
6369 | return 0; | |
6370 | return *prefix == '\0'; | |
6371 | } | |
6372 | ||
74531fed PA |
6373 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6374 | result is stored in EVENT, or throws an error. */ | |
6375 | ||
6376 | static void | |
6377 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6378 | { | |
6379 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6380 | ULONGEST addr; | |
6381 | char *p; | |
94585166 | 6382 | int skipregs = 0; |
74531fed PA |
6383 | |
6384 | event->ptid = null_ptid; | |
bcc75809 | 6385 | event->rs = get_remote_state (); |
74531fed PA |
6386 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6387 | event->ws.value.integer = 0; | |
f7e6eed5 | 6388 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6389 | event->regcache = NULL; |
dc146f7c | 6390 | event->core = -1; |
74531fed PA |
6391 | |
6392 | switch (buf[0]) | |
6393 | { | |
6394 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6395 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6396 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6397 | ss = signal number | |
6398 | n... = register number | |
6399 | r... = register contents | |
6400 | */ | |
6401 | ||
6402 | p = &buf[3]; /* after Txx */ | |
6403 | while (*p) | |
6404 | { | |
6405 | char *p1; | |
cea39f65 | 6406 | int fieldsize; |
43ff13b4 | 6407 | |
1f10ba14 PA |
6408 | p1 = strchr (p, ':'); |
6409 | if (p1 == NULL) | |
6410 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6411 | Packet: '%s'\n"), | |
6412 | p, buf); | |
6413 | if (p == p1) | |
6414 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6415 | Packet: '%s'\n"), | |
6416 | p, buf); | |
3c3bea1c | 6417 | |
1f10ba14 PA |
6418 | /* Some "registers" are actually extended stop information. |
6419 | Note if you're adding a new entry here: GDB 7.9 and | |
6420 | earlier assume that all register "numbers" that start | |
6421 | with an hex digit are real register numbers. Make sure | |
6422 | the server only sends such a packet if it knows the | |
6423 | client understands it. */ | |
c8e38a49 | 6424 | |
26d56a93 | 6425 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6426 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6427 | else if (strprefix (p, p1, "syscall_entry")) |
6428 | { | |
6429 | ULONGEST sysno; | |
6430 | ||
6431 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6432 | p = unpack_varlen_hex (++p1, &sysno); | |
6433 | event->ws.value.syscall_number = (int) sysno; | |
6434 | } | |
6435 | else if (strprefix (p, p1, "syscall_return")) | |
6436 | { | |
6437 | ULONGEST sysno; | |
6438 | ||
6439 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6440 | p = unpack_varlen_hex (++p1, &sysno); | |
6441 | event->ws.value.syscall_number = (int) sysno; | |
6442 | } | |
26d56a93 SL |
6443 | else if (strprefix (p, p1, "watch") |
6444 | || strprefix (p, p1, "rwatch") | |
6445 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6446 | { |
f7e6eed5 | 6447 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6448 | p = unpack_varlen_hex (++p1, &addr); |
6449 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6450 | } |
26d56a93 | 6451 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6452 | { |
6453 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6454 | ||
6455 | /* Make sure the stub doesn't forget to indicate support | |
6456 | with qSupported. */ | |
6457 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6458 | error (_("Unexpected swbreak stop reason")); | |
6459 | ||
6460 | /* The value part is documented as "must be empty", | |
6461 | though we ignore it, in case we ever decide to make | |
6462 | use of it in a backward compatible way. */ | |
8424cc97 | 6463 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6464 | } |
26d56a93 | 6465 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6466 | { |
6467 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6468 | ||
6469 | /* Make sure the stub doesn't forget to indicate support | |
6470 | with qSupported. */ | |
6471 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6472 | error (_("Unexpected hwbreak stop reason")); | |
6473 | ||
6474 | /* See above. */ | |
8424cc97 | 6475 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6476 | } |
26d56a93 | 6477 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6478 | { |
1f10ba14 | 6479 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 6480 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6481 | } |
26d56a93 | 6482 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6483 | { |
6484 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6485 | /* p1 will indicate "begin" or "end", but it makes | |
6486 | no difference for now, so ignore it. */ | |
8424cc97 | 6487 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6488 | } |
26d56a93 | 6489 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6490 | { |
6491 | ULONGEST c; | |
a744cf53 | 6492 | |
1f10ba14 PA |
6493 | p = unpack_varlen_hex (++p1, &c); |
6494 | event->core = c; | |
cea39f65 | 6495 | } |
26d56a93 | 6496 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6497 | { |
6498 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6499 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6500 | } | |
26d56a93 | 6501 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6502 | { |
6503 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6504 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6505 | } | |
26d56a93 | 6506 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6507 | { |
6508 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 6509 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 6510 | } |
6ab24463 | 6511 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6512 | { |
6513 | ULONGEST ignored; | |
6514 | char pathname[PATH_MAX]; | |
6515 | int pathlen; | |
6516 | ||
6517 | /* Determine the length of the execd pathname. */ | |
6518 | p = unpack_varlen_hex (++p1, &ignored); | |
6519 | pathlen = (p - p1) / 2; | |
6520 | ||
6521 | /* Save the pathname for event reporting and for | |
6522 | the next run command. */ | |
6523 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6524 | pathname[pathlen] = '\0'; | |
6525 | ||
6526 | /* This is freed during event handling. */ | |
6527 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6528 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6529 | ||
6530 | /* Skip the registers included in this packet, since | |
6531 | they may be for an architecture different from the | |
6532 | one used by the original program. */ | |
6533 | skipregs = 1; | |
6534 | } | |
65706a29 PA |
6535 | else if (strprefix (p, p1, "create")) |
6536 | { | |
6537 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 6538 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 6539 | } |
cea39f65 MS |
6540 | else |
6541 | { | |
1f10ba14 PA |
6542 | ULONGEST pnum; |
6543 | char *p_temp; | |
6544 | ||
94585166 DB |
6545 | if (skipregs) |
6546 | { | |
8424cc97 | 6547 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
6548 | p++; |
6549 | continue; | |
6550 | } | |
6551 | ||
1f10ba14 PA |
6552 | /* Maybe a real ``P'' register number. */ |
6553 | p_temp = unpack_varlen_hex (p, &pnum); | |
6554 | /* If the first invalid character is the colon, we got a | |
6555 | register number. Otherwise, it's an unknown stop | |
6556 | reason. */ | |
6557 | if (p_temp == p1) | |
6558 | { | |
6559 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6560 | cached_reg_t cached_reg; | |
43ff13b4 | 6561 | |
1f10ba14 PA |
6562 | if (reg == NULL) |
6563 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6564 | Packet: '%s'\n"), |
1f10ba14 | 6565 | hex_string (pnum), p, buf); |
c8e38a49 | 6566 | |
1f10ba14 | 6567 | cached_reg.num = reg->regnum; |
4100683b | 6568 | |
1f10ba14 PA |
6569 | p = p1 + 1; |
6570 | fieldsize = hex2bin (p, cached_reg.data, | |
6571 | register_size (target_gdbarch (), | |
6572 | reg->regnum)); | |
6573 | p += 2 * fieldsize; | |
6574 | if (fieldsize < register_size (target_gdbarch (), | |
6575 | reg->regnum)) | |
6576 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 6577 | |
1f10ba14 PA |
6578 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6579 | } | |
6580 | else | |
6581 | { | |
6582 | /* Not a number. Silently skip unknown optional | |
6583 | info. */ | |
8424cc97 | 6584 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6585 | } |
cea39f65 | 6586 | } |
c8e38a49 | 6587 | |
cea39f65 MS |
6588 | if (*p != ';') |
6589 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6590 | buf, p); | |
6591 | ++p; | |
6592 | } | |
5b5596ff PA |
6593 | |
6594 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6595 | break; | |
6596 | ||
c8e38a49 PA |
6597 | /* fall through */ |
6598 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
6599 | { |
6600 | int sig; | |
6601 | ||
6602 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6603 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6604 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6605 | event->ws.value.sig = (enum gdb_signal) sig; | |
6606 | else | |
6607 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6608 | } | |
c8e38a49 | 6609 | break; |
65706a29 PA |
6610 | case 'w': /* Thread exited. */ |
6611 | { | |
6612 | char *p; | |
6613 | ULONGEST value; | |
6614 | ||
6615 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
6616 | p = unpack_varlen_hex (&buf[1], &value); | |
6617 | event->ws.value.integer = value; | |
6618 | if (*p != ';') | |
6619 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 6620 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
6621 | break; |
6622 | } | |
c8e38a49 PA |
6623 | case 'W': /* Target exited. */ |
6624 | case 'X': | |
6625 | { | |
6626 | char *p; | |
6627 | int pid; | |
6628 | ULONGEST value; | |
82f73884 | 6629 | |
c8e38a49 PA |
6630 | /* GDB used to accept only 2 hex chars here. Stubs should |
6631 | only send more if they detect GDB supports multi-process | |
6632 | support. */ | |
6633 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6634 | |
c8e38a49 PA |
6635 | if (buf[0] == 'W') |
6636 | { | |
6637 | /* The remote process exited. */ | |
74531fed PA |
6638 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6639 | event->ws.value.integer = value; | |
c8e38a49 PA |
6640 | } |
6641 | else | |
6642 | { | |
6643 | /* The remote process exited with a signal. */ | |
74531fed | 6644 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6645 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6646 | event->ws.value.sig = (enum gdb_signal) value; | |
6647 | else | |
6648 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6649 | } |
82f73884 | 6650 | |
c8e38a49 PA |
6651 | /* If no process is specified, assume inferior_ptid. */ |
6652 | pid = ptid_get_pid (inferior_ptid); | |
6653 | if (*p == '\0') | |
6654 | ; | |
6655 | else if (*p == ';') | |
6656 | { | |
6657 | p++; | |
6658 | ||
0b24eb2d | 6659 | if (*p == '\0') |
82f73884 | 6660 | ; |
61012eef | 6661 | else if (startswith (p, "process:")) |
82f73884 | 6662 | { |
c8e38a49 | 6663 | ULONGEST upid; |
a744cf53 | 6664 | |
c8e38a49 PA |
6665 | p += sizeof ("process:") - 1; |
6666 | unpack_varlen_hex (p, &upid); | |
6667 | pid = upid; | |
82f73884 PA |
6668 | } |
6669 | else | |
6670 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6671 | } |
c8e38a49 PA |
6672 | else |
6673 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6674 | event->ptid = pid_to_ptid (pid); |
6675 | } | |
6676 | break; | |
f2faf941 PA |
6677 | case 'N': |
6678 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
6679 | event->ptid = minus_one_ptid; | |
6680 | break; | |
74531fed PA |
6681 | } |
6682 | ||
6efcd9a8 | 6683 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
6684 | error (_("No process or thread specified in stop reply: %s"), buf); |
6685 | } | |
6686 | ||
722247f1 YQ |
6687 | /* When the stub wants to tell GDB about a new notification reply, it |
6688 | sends a notification (%Stop, for example). Those can come it at | |
6689 | any time, hence, we have to make sure that any pending | |
6690 | putpkt/getpkt sequence we're making is finished, before querying | |
6691 | the stub for more events with the corresponding ack command | |
6692 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6693 | immediately upon receiving the notification, something like this | |
6694 | could happen: | |
74531fed PA |
6695 | |
6696 | 1.1) --> Hg 1 | |
6697 | 1.2) <-- OK | |
6698 | 1.3) --> g | |
6699 | 1.4) <-- %Stop | |
6700 | 1.5) --> vStopped | |
6701 | 1.6) <-- (registers reply to step #1.3) | |
6702 | ||
6703 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6704 | query. | |
6705 | ||
796cb314 | 6706 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6707 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6708 | doing whatever we were doing: | |
6709 | ||
6710 | 2.1) --> Hg 1 | |
6711 | 2.2) <-- OK | |
6712 | 2.3) --> g | |
6713 | 2.4) <-- %Stop | |
6714 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6715 | 2.5) <-- (registers reply to step #2.3) | |
6716 | ||
6717 | Eventualy after step #2.5, we return to the event loop, which | |
6718 | notices there's an event on the | |
6719 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6720 | associated callback --- the function below. At this point, we're | |
6721 | always safe to start a vStopped sequence. : | |
6722 | ||
6723 | 2.6) --> vStopped | |
6724 | 2.7) <-- T05 thread:2 | |
6725 | 2.8) --> vStopped | |
6726 | 2.9) --> OK | |
6727 | */ | |
6728 | ||
722247f1 YQ |
6729 | void |
6730 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6731 | { |
6732 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6733 | |
f48ff2a7 | 6734 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6735 | { |
722247f1 YQ |
6736 | if (notif_debug) |
6737 | fprintf_unfiltered (gdb_stdlog, | |
6738 | "notif: process: '%s' ack pending event\n", | |
6739 | nc->name); | |
74531fed | 6740 | |
722247f1 | 6741 | /* acknowledge */ |
f48ff2a7 YQ |
6742 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6743 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6744 | |
6745 | while (1) | |
6746 | { | |
6747 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6748 | if (strcmp (rs->buf, "OK") == 0) | |
6749 | break; | |
6750 | else | |
722247f1 | 6751 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6752 | } |
6753 | } | |
722247f1 YQ |
6754 | else |
6755 | { | |
6756 | if (notif_debug) | |
6757 | fprintf_unfiltered (gdb_stdlog, | |
6758 | "notif: process: '%s' no pending reply\n", | |
6759 | nc->name); | |
6760 | } | |
74531fed PA |
6761 | } |
6762 | ||
74531fed PA |
6763 | /* Called when it is decided that STOP_REPLY holds the info of the |
6764 | event that is to be returned to the core. This function always | |
6765 | destroys STOP_REPLY. */ | |
6766 | ||
6767 | static ptid_t | |
6768 | process_stop_reply (struct stop_reply *stop_reply, | |
6769 | struct target_waitstatus *status) | |
6770 | { | |
6771 | ptid_t ptid; | |
6772 | ||
6773 | *status = stop_reply->ws; | |
6774 | ptid = stop_reply->ptid; | |
6775 | ||
6776 | /* If no thread/process was reported by the stub, assume the current | |
6777 | inferior. */ | |
6778 | if (ptid_equal (ptid, null_ptid)) | |
6779 | ptid = inferior_ptid; | |
6780 | ||
5f3563ea | 6781 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
6782 | && status->kind != TARGET_WAITKIND_SIGNALLED |
6783 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 6784 | { |
799a2abe | 6785 | struct private_thread_info *remote_thr; |
ee154bee | 6786 | |
5f3563ea PA |
6787 | /* Expedited registers. */ |
6788 | if (stop_reply->regcache) | |
6789 | { | |
217f1f79 | 6790 | struct regcache *regcache |
f5656ead | 6791 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6792 | cached_reg_t *reg; |
6793 | int ix; | |
6794 | ||
6795 | for (ix = 0; | |
6796 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6797 | ix++) | |
217f1f79 | 6798 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6799 | VEC_free (cached_reg_t, stop_reply->regcache); |
6800 | } | |
74531fed | 6801 | |
1941c569 | 6802 | remote_notice_new_inferior (ptid, 0); |
799a2abe PA |
6803 | remote_thr = demand_private_info (ptid); |
6804 | remote_thr->core = stop_reply->core; | |
6805 | remote_thr->stop_reason = stop_reply->stop_reason; | |
6806 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
74531fed PA |
6807 | } |
6808 | ||
74531fed PA |
6809 | stop_reply_xfree (stop_reply); |
6810 | return ptid; | |
6811 | } | |
6812 | ||
6813 | /* The non-stop mode version of target_wait. */ | |
6814 | ||
6815 | static ptid_t | |
47608cb1 | 6816 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6817 | { |
6818 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6819 | struct stop_reply *stop_reply; |
6820 | int ret; | |
fee9eda9 | 6821 | int is_notif = 0; |
74531fed PA |
6822 | |
6823 | /* If in non-stop mode, get out of getpkt even if a | |
6824 | notification is received. */ | |
6825 | ||
6826 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6827 | 0 /* forever */, &is_notif); |
74531fed PA |
6828 | while (1) |
6829 | { | |
fee9eda9 | 6830 | if (ret != -1 && !is_notif) |
74531fed PA |
6831 | switch (rs->buf[0]) |
6832 | { | |
6833 | case 'E': /* Error of some sort. */ | |
6834 | /* We're out of sync with the target now. Did it continue | |
6835 | or not? We can't tell which thread it was in non-stop, | |
6836 | so just ignore this. */ | |
6837 | warning (_("Remote failure reply: %s"), rs->buf); | |
6838 | break; | |
6839 | case 'O': /* Console output. */ | |
6840 | remote_console_output (rs->buf + 1); | |
6841 | break; | |
6842 | default: | |
6843 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6844 | break; | |
6845 | } | |
6846 | ||
6847 | /* Acknowledge a pending stop reply that may have arrived in the | |
6848 | mean time. */ | |
f48ff2a7 | 6849 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6850 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6851 | |
6852 | /* If indeed we noticed a stop reply, we're done. */ | |
6853 | stop_reply = queued_stop_reply (ptid); | |
6854 | if (stop_reply != NULL) | |
6855 | return process_stop_reply (stop_reply, status); | |
6856 | ||
47608cb1 | 6857 | /* Still no event. If we're just polling for an event, then |
74531fed | 6858 | return to the event loop. */ |
47608cb1 | 6859 | if (options & TARGET_WNOHANG) |
74531fed PA |
6860 | { |
6861 | status->kind = TARGET_WAITKIND_IGNORE; | |
6862 | return minus_one_ptid; | |
6863 | } | |
6864 | ||
47608cb1 | 6865 | /* Otherwise do a blocking wait. */ |
74531fed | 6866 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6867 | 1 /* forever */, &is_notif); |
74531fed PA |
6868 | } |
6869 | } | |
6870 | ||
6871 | /* Wait until the remote machine stops, then return, storing status in | |
6872 | STATUS just as `wait' would. */ | |
6873 | ||
6874 | static ptid_t | |
47608cb1 | 6875 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6876 | { |
6877 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6878 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6879 | char *buf; |
74531fed PA |
6880 | struct stop_reply *stop_reply; |
6881 | ||
47608cb1 PA |
6882 | again: |
6883 | ||
74531fed PA |
6884 | status->kind = TARGET_WAITKIND_IGNORE; |
6885 | status->value.integer = 0; | |
6886 | ||
6887 | stop_reply = queued_stop_reply (ptid); | |
6888 | if (stop_reply != NULL) | |
6889 | return process_stop_reply (stop_reply, status); | |
6890 | ||
6891 | if (rs->cached_wait_status) | |
6892 | /* Use the cached wait status, but only once. */ | |
6893 | rs->cached_wait_status = 0; | |
6894 | else | |
6895 | { | |
6896 | int ret; | |
722247f1 | 6897 | int is_notif; |
567420d1 PA |
6898 | int forever = ((options & TARGET_WNOHANG) == 0 |
6899 | && wait_forever_enabled_p); | |
6900 | ||
6901 | if (!rs->waiting_for_stop_reply) | |
6902 | { | |
6903 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6904 | return minus_one_ptid; | |
6905 | } | |
74531fed | 6906 | |
74531fed PA |
6907 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
6908 | _never_ wait for ever -> test on target_is_async_p(). | |
6909 | However, before we do that we need to ensure that the caller | |
6910 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6911 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6912 | forever, &is_notif); |
722247f1 YQ |
6913 | |
6914 | /* GDB gets a notification. Return to core as this event is | |
6915 | not interesting. */ | |
6916 | if (ret != -1 && is_notif) | |
6917 | return minus_one_ptid; | |
567420d1 PA |
6918 | |
6919 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6920 | return minus_one_ptid; | |
74531fed PA |
6921 | } |
6922 | ||
6923 | buf = rs->buf; | |
6924 | ||
3a29589a DJ |
6925 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6926 | an 'F' or 'O' packet. */ | |
6927 | if (buf[0] != 'F' && buf[0] != 'O') | |
6928 | rs->ctrlc_pending_p = 0; | |
6929 | ||
74531fed PA |
6930 | switch (buf[0]) |
6931 | { | |
6932 | case 'E': /* Error of some sort. */ | |
6933 | /* We're out of sync with the target now. Did it continue or | |
6934 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
6935 | rs->waiting_for_stop_reply = 0; |
6936 | ||
74531fed PA |
6937 | warning (_("Remote failure reply: %s"), buf); |
6938 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6939 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6940 | break; |
6941 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
6942 | /* GDB may access the inferior memory while handling the File-I/O |
6943 | request, but we don't want GDB accessing memory while waiting | |
6944 | for a stop reply. See the comments in putpkt_binary. Set | |
6945 | waiting_for_stop_reply to 0 temporarily. */ | |
6946 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
6947 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6948 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
6949 | /* GDB handled the File-I/O request, and the target is running |
6950 | again. Keep waiting for events. */ | |
6951 | rs->waiting_for_stop_reply = 1; | |
74531fed | 6952 | break; |
f2faf941 | 6953 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 6954 | { |
29090fb6 LM |
6955 | struct stop_reply *stop_reply; |
6956 | ||
6957 | /* There is a stop reply to handle. */ | |
6958 | rs->waiting_for_stop_reply = 0; | |
6959 | ||
6960 | stop_reply | |
722247f1 YQ |
6961 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
6962 | rs->buf); | |
74531fed | 6963 | |
74531fed | 6964 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6965 | break; |
6966 | } | |
6967 | case 'O': /* Console output. */ | |
6968 | remote_console_output (buf + 1); | |
c8e38a49 PA |
6969 | break; |
6970 | case '\0': | |
b73be471 | 6971 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6972 | { |
6973 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6974 | remote system doesn't support it. */ | |
6975 | target_terminal_ours_for_output (); | |
6976 | printf_filtered | |
6977 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6978 | gdb_signal_to_name (rs->last_sent_signal)); |
6979 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6980 | target_terminal_inferior (); |
6981 | ||
280ceea3 | 6982 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 | 6983 | putpkt ((char *) buf); |
c8e38a49 | 6984 | break; |
43ff13b4 | 6985 | } |
c8e38a49 PA |
6986 | /* else fallthrough */ |
6987 | default: | |
6988 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 6989 | break; |
43ff13b4 | 6990 | } |
c8e38a49 | 6991 | |
f2faf941 PA |
6992 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
6993 | return minus_one_ptid; | |
6994 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
6995 | { |
6996 | /* Nothing interesting happened. If we're doing a non-blocking | |
6997 | poll, we're done. Otherwise, go back to waiting. */ | |
6998 | if (options & TARGET_WNOHANG) | |
6999 | return minus_one_ptid; | |
7000 | else | |
7001 | goto again; | |
7002 | } | |
74531fed PA |
7003 | else if (status->kind != TARGET_WAITKIND_EXITED |
7004 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7005 | { |
7006 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7007 | record_currthread (rs, event_ptid); |
82f73884 PA |
7008 | else |
7009 | event_ptid = inferior_ptid; | |
43ff13b4 | 7010 | } |
74531fed PA |
7011 | else |
7012 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7013 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7014 | |
82f73884 | 7015 | return event_ptid; |
43ff13b4 JM |
7016 | } |
7017 | ||
74531fed PA |
7018 | /* Wait until the remote machine stops, then return, storing status in |
7019 | STATUS just as `wait' would. */ | |
7020 | ||
c8e38a49 | 7021 | static ptid_t |
117de6a9 | 7022 | remote_wait (struct target_ops *ops, |
47608cb1 | 7023 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7024 | { |
7025 | ptid_t event_ptid; | |
7026 | ||
6efcd9a8 | 7027 | if (target_is_non_stop_p ()) |
47608cb1 | 7028 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7029 | else |
47608cb1 | 7030 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7031 | |
d9d41e78 | 7032 | if (target_is_async_p ()) |
c8e38a49 | 7033 | { |
74531fed PA |
7034 | /* If there are are events left in the queue tell the event loop |
7035 | to return here. */ | |
722247f1 | 7036 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7037 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7038 | } |
c8e38a49 PA |
7039 | |
7040 | return event_ptid; | |
7041 | } | |
7042 | ||
74ca34ce | 7043 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7044 | |
b96ec7ac | 7045 | static int |
56be3814 | 7046 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
7047 | { |
7048 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 7049 | char *buf, *p; |
b96ec7ac AC |
7050 | char regp[MAX_REGISTER_SIZE]; |
7051 | int i; | |
7052 | ||
4082afcc | 7053 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7054 | return 0; |
7055 | ||
7056 | if (reg->pnum == -1) | |
7057 | return 0; | |
7058 | ||
2e9f7625 | 7059 | p = rs->buf; |
fcad0fa4 | 7060 | *p++ = 'p'; |
74ca34ce | 7061 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7062 | *p++ = '\0'; |
1f4437a4 MS |
7063 | putpkt (rs->buf); |
7064 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7065 | |
2e9f7625 DJ |
7066 | buf = rs->buf; |
7067 | ||
74ca34ce DJ |
7068 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7069 | { | |
7070 | case PACKET_OK: | |
7071 | break; | |
7072 | case PACKET_UNKNOWN: | |
7073 | return 0; | |
7074 | case PACKET_ERROR: | |
27a9c0bf MS |
7075 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
7076 | gdbarch_register_name (get_regcache_arch (regcache), | |
7077 | reg->regnum), | |
7078 | buf); | |
74ca34ce | 7079 | } |
3f9a994c JB |
7080 | |
7081 | /* If this register is unfetchable, tell the regcache. */ | |
7082 | if (buf[0] == 'x') | |
8480adf2 | 7083 | { |
56be3814 | 7084 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7085 | return 1; |
b96ec7ac | 7086 | } |
b96ec7ac | 7087 | |
3f9a994c JB |
7088 | /* Otherwise, parse and supply the value. */ |
7089 | p = buf; | |
7090 | i = 0; | |
7091 | while (p[0] != 0) | |
7092 | { | |
7093 | if (p[1] == 0) | |
74ca34ce | 7094 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7095 | |
7096 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7097 | p += 2; | |
7098 | } | |
56be3814 | 7099 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7100 | return 1; |
b96ec7ac AC |
7101 | } |
7102 | ||
74ca34ce DJ |
7103 | /* Fetch the registers included in the target's 'g' packet. */ |
7104 | ||
29709017 DJ |
7105 | static int |
7106 | send_g_packet (void) | |
c906108c | 7107 | { |
d01949b6 | 7108 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7109 | int buf_len; |
c906108c | 7110 | |
bba74b36 | 7111 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7112 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7113 | |
29709017 DJ |
7114 | /* We can get out of synch in various cases. If the first character |
7115 | in the buffer is not a hex character, assume that has happened | |
7116 | and try to fetch another packet to read. */ | |
7117 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7118 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7119 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7120 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7121 | { | |
7122 | if (remote_debug) | |
7123 | fprintf_unfiltered (gdb_stdlog, | |
7124 | "Bad register packet; fetching a new packet\n"); | |
7125 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7126 | } | |
7127 | ||
74ca34ce DJ |
7128 | buf_len = strlen (rs->buf); |
7129 | ||
7130 | /* Sanity check the received packet. */ | |
7131 | if (buf_len % 2 != 0) | |
7132 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7133 | |
7134 | return buf_len / 2; | |
7135 | } | |
7136 | ||
7137 | static void | |
56be3814 | 7138 | process_g_packet (struct regcache *regcache) |
29709017 | 7139 | { |
4a22f64d | 7140 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
7141 | struct remote_state *rs = get_remote_state (); |
7142 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
7143 | int i, buf_len; | |
7144 | char *p; | |
7145 | char *regs; | |
7146 | ||
7147 | buf_len = strlen (rs->buf); | |
7148 | ||
7149 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
7150 | if (buf_len > 2 * rsa->sizeof_g_packet) |
7151 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
7152 | ||
7153 | /* Save the size of the packet sent to us by the target. It is used | |
7154 | as a heuristic when determining the max size of packets that the | |
7155 | target can safely receive. */ | |
7156 | if (rsa->actual_register_packet_size == 0) | |
7157 | rsa->actual_register_packet_size = buf_len; | |
7158 | ||
7159 | /* If this is smaller than we guessed the 'g' packet would be, | |
7160 | update our records. A 'g' reply that doesn't include a register's | |
7161 | value implies either that the register is not available, or that | |
7162 | the 'p' packet must be used. */ | |
7163 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7164 | { |
74ca34ce DJ |
7165 | rsa->sizeof_g_packet = buf_len / 2; |
7166 | ||
4a22f64d | 7167 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7168 | { |
74ca34ce DJ |
7169 | if (rsa->regs[i].pnum == -1) |
7170 | continue; | |
7171 | ||
7172 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
7173 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 7174 | else |
74ca34ce | 7175 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7176 | } |
74ca34ce | 7177 | } |
b323314b | 7178 | |
224c3ddb | 7179 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7180 | |
7181 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7182 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7183 | |
c906108c SS |
7184 | /* Reply describes registers byte by byte, each byte encoded as two |
7185 | hex characters. Suck them all up, then supply them to the | |
7186 | register cacheing/storage mechanism. */ | |
7187 | ||
74ca34ce | 7188 | p = rs->buf; |
ea9c271d | 7189 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7190 | { |
74ca34ce DJ |
7191 | if (p[0] == 0 || p[1] == 0) |
7192 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7193 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7194 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7195 | |
c906108c | 7196 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7197 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7198 | else |
7199 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7200 | p += 2; | |
7201 | } | |
7202 | ||
a744cf53 MS |
7203 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7204 | { | |
7205 | struct packet_reg *r = &rsa->regs[i]; | |
7206 | ||
7207 | if (r->in_g_packet) | |
7208 | { | |
7209 | if (r->offset * 2 >= strlen (rs->buf)) | |
7210 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
7211 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7212 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7213 | else if (rs->buf[r->offset * 2] == 'x') |
7214 | { | |
7215 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7216 | /* The register isn't available, mark it as such (at | |
7217 | the same time setting the value to zero). */ | |
7218 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7219 | } | |
7220 | else | |
7221 | regcache_raw_supply (regcache, r->regnum, | |
7222 | regs + r->offset); | |
7223 | } | |
7224 | } | |
c906108c SS |
7225 | } |
7226 | ||
29709017 | 7227 | static void |
56be3814 | 7228 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7229 | { |
7230 | send_g_packet (); | |
56be3814 | 7231 | process_g_packet (regcache); |
29709017 DJ |
7232 | } |
7233 | ||
e6e4e701 PA |
7234 | /* Make the remote selected traceframe match GDB's selected |
7235 | traceframe. */ | |
7236 | ||
7237 | static void | |
7238 | set_remote_traceframe (void) | |
7239 | { | |
7240 | int newnum; | |
262e1174 | 7241 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7242 | |
262e1174 | 7243 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7244 | return; |
7245 | ||
7246 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7247 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7248 | |
7249 | newnum = target_trace_find (tfind_number, | |
7250 | get_traceframe_number (), 0, 0, NULL); | |
7251 | ||
7252 | /* Should not happen. If it does, all bets are off. */ | |
7253 | if (newnum != get_traceframe_number ()) | |
7254 | warning (_("could not set remote traceframe")); | |
7255 | } | |
7256 | ||
74ca34ce | 7257 | static void |
28439f5e PA |
7258 | remote_fetch_registers (struct target_ops *ops, |
7259 | struct regcache *regcache, int regnum) | |
74ca34ce | 7260 | { |
74ca34ce DJ |
7261 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7262 | int i; | |
7263 | ||
e6e4e701 | 7264 | set_remote_traceframe (); |
79d7f229 | 7265 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7266 | |
7267 | if (regnum >= 0) | |
7268 | { | |
7269 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7270 | |
74ca34ce DJ |
7271 | gdb_assert (reg != NULL); |
7272 | ||
7273 | /* If this register might be in the 'g' packet, try that first - | |
7274 | we are likely to read more than one register. If this is the | |
7275 | first 'g' packet, we might be overly optimistic about its | |
7276 | contents, so fall back to 'p'. */ | |
7277 | if (reg->in_g_packet) | |
7278 | { | |
56be3814 | 7279 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7280 | if (reg->in_g_packet) |
7281 | return; | |
7282 | } | |
7283 | ||
56be3814 | 7284 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7285 | return; |
7286 | ||
7287 | /* This register is not available. */ | |
56be3814 | 7288 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7289 | |
7290 | return; | |
7291 | } | |
7292 | ||
56be3814 | 7293 | fetch_registers_using_g (regcache); |
74ca34ce | 7294 | |
4a22f64d | 7295 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7296 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7297 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7298 | { |
7299 | /* This register is not available. */ | |
56be3814 | 7300 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7301 | } |
7302 | } | |
7303 | ||
c906108c SS |
7304 | /* Prepare to store registers. Since we may send them all (using a |
7305 | 'G' request), we have to read out the ones we don't want to change | |
7306 | first. */ | |
7307 | ||
c5aa993b | 7308 | static void |
f32dbf8c | 7309 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7310 | { |
ea9c271d | 7311 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 7312 | int i; |
cfd77fa1 | 7313 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 7314 | |
c906108c | 7315 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7316 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7317 | { |
7318 | case PACKET_DISABLE: | |
7319 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7320 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7321 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7322 | if (rsa->regs[i].in_g_packet) |
316f2060 | 7323 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
7324 | break; |
7325 | case PACKET_ENABLE: | |
7326 | break; | |
7327 | } | |
7328 | } | |
7329 | ||
ad10f812 | 7330 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7331 | packet was not recognized. */ |
5a2468f5 JM |
7332 | |
7333 | static int | |
1f4437a4 MS |
7334 | store_register_using_P (const struct regcache *regcache, |
7335 | struct packet_reg *reg) | |
5a2468f5 | 7336 | { |
4a22f64d | 7337 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7338 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7339 | /* Try storing a single register. */ |
6d820c5c | 7340 | char *buf = rs->buf; |
cfd77fa1 | 7341 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 7342 | char *p; |
5a2468f5 | 7343 | |
4082afcc | 7344 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7345 | return 0; |
7346 | ||
7347 | if (reg->pnum == -1) | |
7348 | return 0; | |
7349 | ||
ea9c271d | 7350 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7351 | p = buf + strlen (buf); |
56be3814 | 7352 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7353 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7354 | putpkt (rs->buf); |
7355 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7356 | |
74ca34ce DJ |
7357 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7358 | { | |
7359 | case PACKET_OK: | |
7360 | return 1; | |
7361 | case PACKET_ERROR: | |
27a9c0bf MS |
7362 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7363 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7364 | case PACKET_UNKNOWN: |
7365 | return 0; | |
7366 | default: | |
7367 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7368 | } | |
c906108c SS |
7369 | } |
7370 | ||
23860348 MS |
7371 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7372 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7373 | |
7374 | static void | |
56be3814 | 7375 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7376 | { |
d01949b6 | 7377 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7378 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7379 | gdb_byte *regs; |
c906108c SS |
7380 | char *p; |
7381 | ||
193cb69f AC |
7382 | /* Extract all the registers in the regcache copying them into a |
7383 | local buffer. */ | |
7384 | { | |
b323314b | 7385 | int i; |
a744cf53 | 7386 | |
224c3ddb | 7387 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7388 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7389 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7390 | { |
ea9c271d | 7391 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7392 | |
b323314b | 7393 | if (r->in_g_packet) |
56be3814 | 7394 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7395 | } |
7396 | } | |
c906108c SS |
7397 | |
7398 | /* Command describes registers byte by byte, | |
7399 | each byte encoded as two hex characters. */ | |
6d820c5c | 7400 | p = rs->buf; |
193cb69f | 7401 | *p++ = 'G'; |
74ca34ce DJ |
7402 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
7403 | updated. */ | |
7404 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
7405 | putpkt (rs->buf); |
7406 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7407 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7408 | error (_("Could not write registers; remote failure reply '%s'"), |
7409 | rs->buf); | |
c906108c | 7410 | } |
74ca34ce DJ |
7411 | |
7412 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7413 | of the register cache buffer. FIXME: ignores errors. */ | |
7414 | ||
7415 | static void | |
28439f5e PA |
7416 | remote_store_registers (struct target_ops *ops, |
7417 | struct regcache *regcache, int regnum) | |
74ca34ce | 7418 | { |
74ca34ce DJ |
7419 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7420 | int i; | |
7421 | ||
e6e4e701 | 7422 | set_remote_traceframe (); |
79d7f229 | 7423 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7424 | |
7425 | if (regnum >= 0) | |
7426 | { | |
7427 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7428 | |
74ca34ce DJ |
7429 | gdb_assert (reg != NULL); |
7430 | ||
7431 | /* Always prefer to store registers using the 'P' packet if | |
7432 | possible; we often change only a small number of registers. | |
7433 | Sometimes we change a larger number; we'd need help from a | |
7434 | higher layer to know to use 'G'. */ | |
56be3814 | 7435 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7436 | return; |
7437 | ||
7438 | /* For now, don't complain if we have no way to write the | |
7439 | register. GDB loses track of unavailable registers too | |
7440 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7441 | any way to read the register, either... */ |
74ca34ce DJ |
7442 | if (!reg->in_g_packet) |
7443 | return; | |
7444 | ||
56be3814 | 7445 | store_registers_using_G (regcache); |
74ca34ce DJ |
7446 | return; |
7447 | } | |
7448 | ||
56be3814 | 7449 | store_registers_using_G (regcache); |
74ca34ce | 7450 | |
4a22f64d | 7451 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7452 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7453 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7454 | /* See above for why we do not issue an error here. */ |
7455 | continue; | |
7456 | } | |
c906108c SS |
7457 | \f |
7458 | ||
7459 | /* Return the number of hex digits in num. */ | |
7460 | ||
7461 | static int | |
fba45db2 | 7462 | hexnumlen (ULONGEST num) |
c906108c SS |
7463 | { |
7464 | int i; | |
7465 | ||
7466 | for (i = 0; num != 0; i++) | |
7467 | num >>= 4; | |
7468 | ||
7469 | return max (i, 1); | |
7470 | } | |
7471 | ||
2df3850c | 7472 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7473 | |
7474 | static int | |
fba45db2 | 7475 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7476 | { |
c906108c | 7477 | int len = hexnumlen (num); |
a744cf53 | 7478 | |
2df3850c JM |
7479 | return hexnumnstr (buf, num, len); |
7480 | } | |
7481 | ||
c906108c | 7482 | |
2df3850c | 7483 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7484 | |
2df3850c | 7485 | static int |
fba45db2 | 7486 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7487 | { |
7488 | int i; | |
7489 | ||
7490 | buf[width] = '\0'; | |
7491 | ||
7492 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7493 | { |
c5aa993b | 7494 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7495 | num >>= 4; |
7496 | } | |
7497 | ||
2df3850c | 7498 | return width; |
c906108c SS |
7499 | } |
7500 | ||
23860348 | 7501 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7502 | |
7503 | static CORE_ADDR | |
fba45db2 | 7504 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7505 | { |
883b9c6c | 7506 | unsigned int address_size = remote_address_size; |
a744cf53 | 7507 | |
911c95a5 UW |
7508 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7509 | if (!address_size) | |
f5656ead | 7510 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7511 | |
7512 | if (address_size > 0 | |
7513 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7514 | { |
7515 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7516 | in a ULONGEST variable. */ |
c906108c | 7517 | ULONGEST mask = 1; |
a744cf53 | 7518 | |
911c95a5 | 7519 | mask = (mask << address_size) - 1; |
c906108c SS |
7520 | addr &= mask; |
7521 | } | |
7522 | return addr; | |
7523 | } | |
7524 | ||
7525 | /* Determine whether the remote target supports binary downloading. | |
7526 | This is accomplished by sending a no-op memory write of zero length | |
7527 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7528 | the whole packet, since many stubs strip the eighth bit and |
7529 | subsequently compute a wrong checksum, which causes real havoc with | |
7530 | remote_write_bytes. | |
7a292a7a | 7531 | |
96baa820 | 7532 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7533 | clean. In cases like this, the user should clear "remote |
23860348 | 7534 | X-packet". */ |
96baa820 | 7535 | |
c906108c | 7536 | static void |
fba45db2 | 7537 | check_binary_download (CORE_ADDR addr) |
c906108c | 7538 | { |
d01949b6 | 7539 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7540 | |
4082afcc | 7541 | switch (packet_support (PACKET_X)) |
c906108c | 7542 | { |
96baa820 JM |
7543 | case PACKET_DISABLE: |
7544 | break; | |
7545 | case PACKET_ENABLE: | |
7546 | break; | |
7547 | case PACKET_SUPPORT_UNKNOWN: | |
7548 | { | |
96baa820 | 7549 | char *p; |
802188a7 | 7550 | |
2e9f7625 | 7551 | p = rs->buf; |
96baa820 JM |
7552 | *p++ = 'X'; |
7553 | p += hexnumstr (p, (ULONGEST) addr); | |
7554 | *p++ = ','; | |
7555 | p += hexnumstr (p, (ULONGEST) 0); | |
7556 | *p++ = ':'; | |
7557 | *p = '\0'; | |
802188a7 | 7558 | |
2e9f7625 | 7559 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7560 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7561 | |
2e9f7625 | 7562 | if (rs->buf[0] == '\0') |
96baa820 JM |
7563 | { |
7564 | if (remote_debug) | |
7565 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7566 | "binary downloading NOT " |
7567 | "supported by target\n"); | |
444abaca | 7568 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
7569 | } |
7570 | else | |
7571 | { | |
7572 | if (remote_debug) | |
7573 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 7574 | "binary downloading supported by target\n"); |
444abaca | 7575 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
7576 | } |
7577 | break; | |
7578 | } | |
c906108c SS |
7579 | } |
7580 | } | |
7581 | ||
124e13d9 SM |
7582 | /* Helper function to resize the payload in order to try to get a good |
7583 | alignment. We try to write an amount of data such that the next write will | |
7584 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7585 | ||
7586 | static int | |
7587 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7588 | { | |
7589 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7590 | } | |
7591 | ||
c906108c SS |
7592 | /* Write memory data directly to the remote machine. |
7593 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 7594 | HEADER is the starting part of the packet. |
c906108c SS |
7595 | MEMADDR is the address in the remote memory space. |
7596 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7597 | LEN_UNITS is the number of addressable units to write. |
7598 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
7599 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7600 | should send data as binary ('X'), or hex-encoded ('M'). | |
7601 | ||
7602 | The function creates packet of the form | |
7603 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7604 | ||
124e13d9 | 7605 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
7606 | |
7607 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7608 | are omitted. | |
7609 | ||
9b409511 | 7610 | Return the transferred status, error or OK (an |
124e13d9 SM |
7611 | 'enum target_xfer_status' value). Save the number of addressable units |
7612 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
7613 | ||
7614 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7615 | exchange between gdb and the stub could look like (?? in place of the | |
7616 | checksum): | |
7617 | ||
7618 | -> $m1000,4#?? | |
7619 | <- aaaabbbbccccdddd | |
7620 | ||
7621 | -> $M1000,3:eeeeffffeeee#?? | |
7622 | <- OK | |
7623 | ||
7624 | -> $m1000,4#?? | |
7625 | <- eeeeffffeeeedddd */ | |
c906108c | 7626 | |
9b409511 | 7627 | static enum target_xfer_status |
a76d924d | 7628 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7629 | const gdb_byte *myaddr, ULONGEST len_units, |
7630 | int unit_size, ULONGEST *xfered_len_units, | |
7631 | char packet_format, int use_length) | |
c906108c | 7632 | { |
6d820c5c | 7633 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7634 | char *p; |
a76d924d DJ |
7635 | char *plen = NULL; |
7636 | int plenlen = 0; | |
124e13d9 SM |
7637 | int todo_units; |
7638 | int units_written; | |
7639 | int payload_capacity_bytes; | |
7640 | int payload_length_bytes; | |
a76d924d DJ |
7641 | |
7642 | if (packet_format != 'X' && packet_format != 'M') | |
7643 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7644 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7645 | |
124e13d9 | 7646 | if (len_units == 0) |
9b409511 | 7647 | return TARGET_XFER_EOF; |
b2182ed2 | 7648 | |
124e13d9 | 7649 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7650 | |
6d820c5c DJ |
7651 | /* The packet buffer will be large enough for the payload; |
7652 | get_memory_packet_size ensures this. */ | |
a76d924d | 7653 | rs->buf[0] = '\0'; |
c906108c | 7654 | |
a257b5bb | 7655 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7656 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7657 | ||
124e13d9 | 7658 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7659 | if (!use_length) |
0df8b418 | 7660 | /* The comma won't be used. */ |
124e13d9 SM |
7661 | payload_capacity_bytes += 1; |
7662 | payload_capacity_bytes -= strlen (header); | |
7663 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7664 | |
a76d924d | 7665 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7666 | |
a76d924d DJ |
7667 | strcat (rs->buf, header); |
7668 | p = rs->buf + strlen (header); | |
7669 | ||
7670 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7671 | if (packet_format == 'X') | |
c906108c | 7672 | { |
23860348 | 7673 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7674 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7675 | if (use_length) |
124e13d9 SM |
7676 | payload_capacity_bytes -= hexnumlen (todo_units); |
7677 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7678 | } |
7679 | else | |
7680 | { | |
124e13d9 SM |
7681 | /* Number of bytes that will fit. */ |
7682 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7683 | if (use_length) |
124e13d9 SM |
7684 | payload_capacity_bytes -= hexnumlen (todo_units); |
7685 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7686 | } |
a76d924d | 7687 | |
124e13d9 | 7688 | if (todo_units <= 0) |
3de11b2e | 7689 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7690 | _("minimum packet size too small to write data")); |
802188a7 | 7691 | |
6765f3e5 DJ |
7692 | /* If we already need another packet, then try to align the end |
7693 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7694 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7695 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7696 | |
a257b5bb | 7697 | /* Append "<memaddr>". */ |
917317f4 JM |
7698 | memaddr = remote_address_masked (memaddr); |
7699 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7700 | |
a76d924d DJ |
7701 | if (use_length) |
7702 | { | |
7703 | /* Append ",". */ | |
7704 | *p++ = ','; | |
802188a7 | 7705 | |
124e13d9 SM |
7706 | /* Append the length and retain its location and size. It may need to be |
7707 | adjusted once the packet body has been created. */ | |
a76d924d | 7708 | plen = p; |
124e13d9 | 7709 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7710 | p += plenlen; |
7711 | } | |
a257b5bb AC |
7712 | |
7713 | /* Append ":". */ | |
917317f4 JM |
7714 | *p++ = ':'; |
7715 | *p = '\0'; | |
802188a7 | 7716 | |
a257b5bb | 7717 | /* Append the packet body. */ |
a76d924d | 7718 | if (packet_format == 'X') |
917317f4 | 7719 | { |
917317f4 JM |
7720 | /* Binary mode. Send target system values byte by byte, in |
7721 | increasing byte addresses. Only escape certain critical | |
7722 | characters. */ | |
124e13d9 SM |
7723 | payload_length_bytes = |
7724 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7725 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7726 | |
124e13d9 | 7727 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7728 | a second try to keep the end of the packet aligned. Don't do |
7729 | this if the packet is tiny. */ | |
124e13d9 | 7730 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7731 | { |
124e13d9 SM |
7732 | int new_todo_units; |
7733 | ||
7734 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7735 | ||
7736 | if (new_todo_units != units_written) | |
7737 | payload_length_bytes = | |
7738 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7739 | (gdb_byte *) p, &units_written, | |
7740 | payload_capacity_bytes); | |
6765f3e5 DJ |
7741 | } |
7742 | ||
124e13d9 SM |
7743 | p += payload_length_bytes; |
7744 | if (use_length && units_written < todo_units) | |
c906108c | 7745 | { |
802188a7 | 7746 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7747 | and we have actually sent fewer units than planned. |
917317f4 JM |
7748 | Fix-up the length field of the packet. Use the same |
7749 | number of characters as before. */ | |
124e13d9 SM |
7750 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7751 | plenlen); | |
917317f4 | 7752 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7753 | } |
a76d924d DJ |
7754 | } |
7755 | else | |
7756 | { | |
917317f4 JM |
7757 | /* Normal mode: Send target system values byte by byte, in |
7758 | increasing byte addresses. Each byte is encoded as a two hex | |
7759 | value. */ | |
124e13d9 SM |
7760 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7761 | units_written = todo_units; | |
c906108c | 7762 | } |
802188a7 | 7763 | |
2e9f7625 | 7764 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7765 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7766 | |
2e9f7625 | 7767 | if (rs->buf[0] == 'E') |
00d84524 | 7768 | return TARGET_XFER_E_IO; |
802188a7 | 7769 | |
124e13d9 SM |
7770 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7771 | send fewer units than we'd planned. */ | |
7772 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7773 | return TARGET_XFER_OK; |
c906108c SS |
7774 | } |
7775 | ||
a76d924d DJ |
7776 | /* Write memory data directly to the remote machine. |
7777 | This does not inform the data cache; the data cache uses this. | |
7778 | MEMADDR is the address in the remote memory space. | |
7779 | MYADDR is the address of the buffer in our space. | |
7780 | LEN is the number of bytes. | |
7781 | ||
9b409511 YQ |
7782 | Return the transferred status, error or OK (an |
7783 | 'enum target_xfer_status' value). Save the number of bytes | |
7784 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7785 | |
9b409511 YQ |
7786 | static enum target_xfer_status |
7787 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7788 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7789 | { |
7790 | char *packet_format = 0; | |
7791 | ||
7792 | /* Check whether the target supports binary download. */ | |
7793 | check_binary_download (memaddr); | |
7794 | ||
4082afcc | 7795 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7796 | { |
7797 | case PACKET_ENABLE: | |
7798 | packet_format = "X"; | |
7799 | break; | |
7800 | case PACKET_DISABLE: | |
7801 | packet_format = "M"; | |
7802 | break; | |
7803 | case PACKET_SUPPORT_UNKNOWN: | |
7804 | internal_error (__FILE__, __LINE__, | |
7805 | _("remote_write_bytes: bad internal state")); | |
7806 | default: | |
7807 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7808 | } | |
7809 | ||
7810 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7811 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7812 | packet_format[0], 1); |
a76d924d DJ |
7813 | } |
7814 | ||
9217e74e YQ |
7815 | /* Read memory data directly from the remote machine. |
7816 | This does not use the data cache; the data cache uses this. | |
7817 | MEMADDR is the address in the remote memory space. | |
7818 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7819 | LEN_UNITS is the number of addressable memory units to read.. |
7820 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7821 | |
7822 | Return the transferred status, error or OK (an | |
7823 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7824 | transferred in *XFERED_LEN_UNITS. |
7825 | ||
7826 | See the comment of remote_write_bytes_aux for an example of | |
7827 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7828 | |
7829 | static enum target_xfer_status | |
124e13d9 SM |
7830 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7831 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7832 | { |
7833 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7834 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7835 | char *p; |
124e13d9 SM |
7836 | int todo_units; |
7837 | int decoded_bytes; | |
9217e74e | 7838 | |
124e13d9 | 7839 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7840 | /* The packet buffer will be large enough for the payload; |
7841 | get_memory_packet_size ensures this. */ | |
7842 | ||
124e13d9 SM |
7843 | /* Number of units that will fit. */ |
7844 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7845 | |
7846 | /* Construct "m"<memaddr>","<len>". */ | |
7847 | memaddr = remote_address_masked (memaddr); | |
7848 | p = rs->buf; | |
7849 | *p++ = 'm'; | |
7850 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7851 | *p++ = ','; | |
124e13d9 | 7852 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7853 | *p = '\0'; |
7854 | putpkt (rs->buf); | |
7855 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7856 | if (rs->buf[0] == 'E' | |
7857 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7858 | && rs->buf[3] == '\0') | |
7859 | return TARGET_XFER_E_IO; | |
7860 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7861 | characters. */ | |
7862 | p = rs->buf; | |
124e13d9 | 7863 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7864 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7865 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7866 | return TARGET_XFER_OK; |
7867 | } | |
7868 | ||
b55fbac4 YQ |
7869 | /* Using the set of read-only target sections of remote, read live |
7870 | read-only memory. | |
8acf9577 YQ |
7871 | |
7872 | For interface/parameters/return description see target.h, | |
7873 | to_xfer_partial. */ | |
7874 | ||
7875 | static enum target_xfer_status | |
b55fbac4 YQ |
7876 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7877 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7878 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7879 | { |
7880 | struct target_section *secp; | |
7881 | struct target_section_table *table; | |
7882 | ||
7883 | secp = target_section_by_addr (ops, memaddr); | |
7884 | if (secp != NULL | |
7885 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7886 | secp->the_bfd_section) | |
7887 | & SEC_READONLY)) | |
7888 | { | |
7889 | struct target_section *p; | |
7890 | ULONGEST memend = memaddr + len; | |
7891 | ||
7892 | table = target_get_section_table (ops); | |
7893 | ||
7894 | for (p = table->sections; p < table->sections_end; p++) | |
7895 | { | |
7896 | if (memaddr >= p->addr) | |
7897 | { | |
7898 | if (memend <= p->endaddr) | |
7899 | { | |
7900 | /* Entire transfer is within this section. */ | |
124e13d9 | 7901 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7902 | xfered_len); |
8acf9577 YQ |
7903 | } |
7904 | else if (memaddr >= p->endaddr) | |
7905 | { | |
7906 | /* This section ends before the transfer starts. */ | |
7907 | continue; | |
7908 | } | |
7909 | else | |
7910 | { | |
7911 | /* This section overlaps the transfer. Just do half. */ | |
7912 | len = p->endaddr - memaddr; | |
124e13d9 | 7913 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7914 | xfered_len); |
8acf9577 YQ |
7915 | } |
7916 | } | |
7917 | } | |
7918 | } | |
7919 | ||
7920 | return TARGET_XFER_EOF; | |
7921 | } | |
7922 | ||
9217e74e YQ |
7923 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7924 | first if the requested memory is unavailable in traceframe. | |
7925 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7926 | |
9b409511 | 7927 | static enum target_xfer_status |
8acf9577 | 7928 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7929 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7930 | ULONGEST *xfered_len) | |
c906108c | 7931 | { |
6b6aa828 | 7932 | if (len == 0) |
96c4f946 | 7933 | return TARGET_XFER_EOF; |
b2182ed2 | 7934 | |
8acf9577 YQ |
7935 | if (get_traceframe_number () != -1) |
7936 | { | |
7937 | VEC(mem_range_s) *available; | |
7938 | ||
7939 | /* If we fail to get the set of available memory, then the | |
7940 | target does not support querying traceframe info, and so we | |
7941 | attempt reading from the traceframe anyway (assuming the | |
7942 | target implements the old QTro packet then). */ | |
7943 | if (traceframe_available_memory (&available, memaddr, len)) | |
7944 | { | |
7945 | struct cleanup *old_chain; | |
7946 | ||
7947 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7948 | ||
7949 | if (VEC_empty (mem_range_s, available) | |
7950 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7951 | { | |
7952 | enum target_xfer_status res; | |
7953 | ||
7954 | /* Don't read into the traceframe's available | |
7955 | memory. */ | |
7956 | if (!VEC_empty (mem_range_s, available)) | |
7957 | { | |
7958 | LONGEST oldlen = len; | |
7959 | ||
7960 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7961 | gdb_assert (len <= oldlen); | |
7962 | } | |
7963 | ||
7964 | do_cleanups (old_chain); | |
7965 | ||
7966 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7967 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 7968 | len, unit_size, xfered_len); |
8acf9577 YQ |
7969 | if (res == TARGET_XFER_OK) |
7970 | return TARGET_XFER_OK; | |
7971 | else | |
7972 | { | |
7973 | /* No use trying further, we know some memory starting | |
7974 | at MEMADDR isn't available. */ | |
7975 | *xfered_len = len; | |
7976 | return TARGET_XFER_UNAVAILABLE; | |
7977 | } | |
7978 | } | |
7979 | ||
7980 | /* Don't try to read more than how much is available, in | |
7981 | case the target implements the deprecated QTro packet to | |
7982 | cater for older GDBs (the target's knowledge of read-only | |
7983 | sections may be outdated by now). */ | |
7984 | len = VEC_index (mem_range_s, available, 0)->length; | |
7985 | ||
7986 | do_cleanups (old_chain); | |
7987 | } | |
7988 | } | |
7989 | ||
124e13d9 | 7990 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 7991 | } |
74531fed | 7992 | |
c906108c | 7993 | \f |
c906108c | 7994 | |
a76d924d DJ |
7995 | /* Sends a packet with content determined by the printf format string |
7996 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7997 | whether the packet was a success, a failure, or unknown. */ | |
7998 | ||
77b64a49 PA |
7999 | static enum packet_result remote_send_printf (const char *format, ...) |
8000 | ATTRIBUTE_PRINTF (1, 2); | |
8001 | ||
2c0b251b | 8002 | static enum packet_result |
a76d924d DJ |
8003 | remote_send_printf (const char *format, ...) |
8004 | { | |
8005 | struct remote_state *rs = get_remote_state (); | |
8006 | int max_size = get_remote_packet_size (); | |
a76d924d | 8007 | va_list ap; |
a744cf53 | 8008 | |
a76d924d DJ |
8009 | va_start (ap, format); |
8010 | ||
8011 | rs->buf[0] = '\0'; | |
8012 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8013 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8014 | |
8015 | if (putpkt (rs->buf) < 0) | |
8016 | error (_("Communication problem with target.")); | |
8017 | ||
8018 | rs->buf[0] = '\0'; | |
8019 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8020 | ||
8021 | return packet_check_result (rs->buf); | |
8022 | } | |
8023 | ||
8024 | static void | |
8025 | restore_remote_timeout (void *p) | |
8026 | { | |
8027 | int value = *(int *)p; | |
a744cf53 | 8028 | |
a76d924d DJ |
8029 | remote_timeout = value; |
8030 | } | |
8031 | ||
8032 | /* Flash writing can take quite some time. We'll set | |
8033 | effectively infinite timeout for flash operations. | |
8034 | In future, we'll need to decide on a better approach. */ | |
8035 | static const int remote_flash_timeout = 1000; | |
8036 | ||
8037 | static void | |
8038 | remote_flash_erase (struct target_ops *ops, | |
8039 | ULONGEST address, LONGEST length) | |
8040 | { | |
f5656ead | 8041 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
8042 | int saved_remote_timeout = remote_timeout; |
8043 | enum packet_result ret; | |
a76d924d DJ |
8044 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
8045 | &saved_remote_timeout); | |
a744cf53 | 8046 | |
a76d924d DJ |
8047 | remote_timeout = remote_flash_timeout; |
8048 | ||
8049 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8050 | phex (address, addr_size), |
a76d924d DJ |
8051 | phex (length, 4)); |
8052 | switch (ret) | |
8053 | { | |
8054 | case PACKET_UNKNOWN: | |
8055 | error (_("Remote target does not support flash erase")); | |
8056 | case PACKET_ERROR: | |
8057 | error (_("Error erasing flash with vFlashErase packet")); | |
8058 | default: | |
8059 | break; | |
8060 | } | |
8061 | ||
8062 | do_cleanups (back_to); | |
8063 | } | |
8064 | ||
9b409511 YQ |
8065 | static enum target_xfer_status |
8066 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8067 | ULONGEST length, ULONGEST *xfered_len, | |
8068 | const gdb_byte *data) | |
a76d924d DJ |
8069 | { |
8070 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 8071 | enum target_xfer_status ret; |
a76d924d | 8072 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 8073 | &saved_remote_timeout); |
a76d924d DJ |
8074 | |
8075 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 8076 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 8077 | xfered_len,'X', 0); |
a76d924d DJ |
8078 | do_cleanups (back_to); |
8079 | ||
8080 | return ret; | |
8081 | } | |
8082 | ||
8083 | static void | |
8084 | remote_flash_done (struct target_ops *ops) | |
8085 | { | |
8086 | int saved_remote_timeout = remote_timeout; | |
8087 | int ret; | |
8088 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
8089 | &saved_remote_timeout); | |
8090 | ||
8091 | remote_timeout = remote_flash_timeout; | |
8092 | ret = remote_send_printf ("vFlashDone"); | |
8093 | do_cleanups (back_to); | |
8094 | ||
8095 | switch (ret) | |
8096 | { | |
8097 | case PACKET_UNKNOWN: | |
8098 | error (_("Remote target does not support vFlashDone")); | |
8099 | case PACKET_ERROR: | |
8100 | error (_("Error finishing flash operation")); | |
8101 | default: | |
8102 | break; | |
8103 | } | |
8104 | } | |
8105 | ||
c906108c | 8106 | static void |
fba45db2 | 8107 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8108 | { |
8109 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8110 | } | |
8111 | \f | |
8112 | /* Stuff for dealing with the packets which are part of this protocol. | |
8113 | See comment at top of file for details. */ | |
8114 | ||
1927e618 PA |
8115 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8116 | error to higher layers. Called when a serial error is detected. | |
8117 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8118 | the system error message for errno at function entry and final dot |
8119 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8120 | |
8121 | static void | |
8122 | unpush_and_perror (const char *string) | |
8123 | { | |
d6cb50a2 | 8124 | int saved_errno = errno; |
1927e618 PA |
8125 | |
8126 | remote_unpush_target (); | |
d6cb50a2 JK |
8127 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8128 | safe_strerror (saved_errno)); | |
1927e618 PA |
8129 | } |
8130 | ||
048094ac PA |
8131 | /* Read a single character from the remote end. The current quit |
8132 | handler is overridden to avoid quitting in the middle of packet | |
8133 | sequence, as that would break communication with the remote server. | |
8134 | See remote_serial_quit_handler for more detail. */ | |
c906108c SS |
8135 | |
8136 | static int | |
fba45db2 | 8137 | readchar (int timeout) |
c906108c SS |
8138 | { |
8139 | int ch; | |
5d93a237 | 8140 | struct remote_state *rs = get_remote_state (); |
048094ac PA |
8141 | struct cleanup *old_chain; |
8142 | ||
8143 | old_chain = make_cleanup_override_quit_handler (remote_serial_quit_handler); | |
8144 | ||
8145 | rs->got_ctrlc_during_io = 0; | |
c906108c | 8146 | |
5d93a237 | 8147 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 8148 | |
048094ac PA |
8149 | if (rs->got_ctrlc_during_io) |
8150 | set_quit_flag (); | |
8151 | ||
8152 | do_cleanups (old_chain); | |
8153 | ||
2acceee2 | 8154 | if (ch >= 0) |
0876f84a | 8155 | return ch; |
2acceee2 JM |
8156 | |
8157 | switch ((enum serial_rc) ch) | |
c906108c SS |
8158 | { |
8159 | case SERIAL_EOF: | |
78a095c3 | 8160 | remote_unpush_target (); |
598d3636 | 8161 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8162 | /* no return */ |
c906108c | 8163 | case SERIAL_ERROR: |
1927e618 PA |
8164 | unpush_and_perror (_("Remote communication error. " |
8165 | "Target disconnected.")); | |
2acceee2 | 8166 | /* no return */ |
c906108c | 8167 | case SERIAL_TIMEOUT: |
2acceee2 | 8168 | break; |
c906108c | 8169 | } |
2acceee2 | 8170 | return ch; |
c906108c SS |
8171 | } |
8172 | ||
c33e31fd | 8173 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
8174 | writing fails. The current quit handler is overridden to avoid |
8175 | quitting in the middle of packet sequence, as that would break | |
8176 | communication with the remote server. See | |
8177 | remote_serial_quit_handler for more detail. */ | |
c33e31fd PA |
8178 | |
8179 | static void | |
8180 | remote_serial_write (const char *str, int len) | |
8181 | { | |
5d93a237 | 8182 | struct remote_state *rs = get_remote_state (); |
048094ac PA |
8183 | struct cleanup *old_chain; |
8184 | ||
8185 | old_chain = make_cleanup_override_quit_handler (remote_serial_quit_handler); | |
8186 | ||
8187 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
8188 | |
8189 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8190 | { |
1927e618 PA |
8191 | unpush_and_perror (_("Remote communication error. " |
8192 | "Target disconnected.")); | |
c33e31fd | 8193 | } |
048094ac PA |
8194 | |
8195 | if (rs->got_ctrlc_during_io) | |
8196 | set_quit_flag (); | |
8197 | ||
8198 | do_cleanups (old_chain); | |
c33e31fd PA |
8199 | } |
8200 | ||
6d820c5c DJ |
8201 | /* Send the command in *BUF to the remote machine, and read the reply |
8202 | into *BUF. Report an error if we get an error reply. Resize | |
8203 | *BUF using xrealloc if necessary to hold the result, and update | |
8204 | *SIZEOF_BUF. */ | |
c906108c SS |
8205 | |
8206 | static void | |
6d820c5c DJ |
8207 | remote_send (char **buf, |
8208 | long *sizeof_buf) | |
c906108c | 8209 | { |
6d820c5c | 8210 | putpkt (*buf); |
c2d11a7d | 8211 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8212 | |
6d820c5c DJ |
8213 | if ((*buf)[0] == 'E') |
8214 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8215 | } |
8216 | ||
6e5abd65 PA |
8217 | /* Return a pointer to an xmalloc'ed string representing an escaped |
8218 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
8219 | etc. The caller is responsible for releasing the returned | |
8220 | memory. */ | |
8221 | ||
8222 | static char * | |
8223 | escape_buffer (const char *buf, int n) | |
8224 | { | |
8225 | struct cleanup *old_chain; | |
8226 | struct ui_file *stb; | |
8227 | char *str; | |
6e5abd65 PA |
8228 | |
8229 | stb = mem_fileopen (); | |
8230 | old_chain = make_cleanup_ui_file_delete (stb); | |
8231 | ||
6ef284bd | 8232 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 8233 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
8234 | do_cleanups (old_chain); |
8235 | return str; | |
8236 | } | |
8237 | ||
c906108c SS |
8238 | /* Display a null-terminated packet on stdout, for debugging, using C |
8239 | string notation. */ | |
8240 | ||
8241 | static void | |
baa336ce | 8242 | print_packet (const char *buf) |
c906108c SS |
8243 | { |
8244 | puts_filtered ("\""); | |
43e526b9 | 8245 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8246 | puts_filtered ("\""); |
8247 | } | |
8248 | ||
8249 | int | |
baa336ce | 8250 | putpkt (const char *buf) |
c906108c SS |
8251 | { |
8252 | return putpkt_binary (buf, strlen (buf)); | |
8253 | } | |
8254 | ||
8255 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8256 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8257 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8258 | and for a possible /0 if we are debugging (remote_debug) and want |
8259 | to print the sent packet as a string. */ | |
c906108c SS |
8260 | |
8261 | static int | |
baa336ce | 8262 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8263 | { |
2d717e4f | 8264 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8265 | int i; |
8266 | unsigned char csum = 0; | |
224c3ddb | 8267 | char *buf2 = (char *) xmalloc (cnt + 6); |
a5c0808e | 8268 | struct cleanup *old_chain = make_cleanup (xfree, buf2); |
085dd6e6 | 8269 | |
c906108c SS |
8270 | int ch; |
8271 | int tcount = 0; | |
8272 | char *p; | |
8273 | ||
e24a49d8 PA |
8274 | /* Catch cases like trying to read memory or listing threads while |
8275 | we're waiting for a stop reply. The remote server wouldn't be | |
8276 | ready to handle this request, so we'd hang and timeout. We don't | |
8277 | have to worry about this in synchronous mode, because in that | |
8278 | case it's not possible to issue a command while the target is | |
74531fed PA |
8279 | running. This is not a problem in non-stop mode, because in that |
8280 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8281 | if (!target_is_non_stop_p () |
8282 | && target_is_async_p () | |
8283 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8284 | { |
8285 | error (_("Cannot execute this command while the target is running.\n" | |
8286 | "Use the \"interrupt\" command to stop the target\n" | |
8287 | "and then try again.")); | |
8288 | } | |
e24a49d8 | 8289 | |
2d717e4f DJ |
8290 | /* We're sending out a new packet. Make sure we don't look at a |
8291 | stale cached response. */ | |
8292 | rs->cached_wait_status = 0; | |
8293 | ||
c906108c SS |
8294 | /* Copy the packet into buffer BUF2, encapsulating it |
8295 | and giving it a checksum. */ | |
8296 | ||
c906108c SS |
8297 | p = buf2; |
8298 | *p++ = '$'; | |
8299 | ||
8300 | for (i = 0; i < cnt; i++) | |
8301 | { | |
8302 | csum += buf[i]; | |
8303 | *p++ = buf[i]; | |
8304 | } | |
8305 | *p++ = '#'; | |
8306 | *p++ = tohex ((csum >> 4) & 0xf); | |
8307 | *p++ = tohex (csum & 0xf); | |
8308 | ||
8309 | /* Send it over and over until we get a positive ack. */ | |
8310 | ||
8311 | while (1) | |
8312 | { | |
8313 | int started_error_output = 0; | |
8314 | ||
8315 | if (remote_debug) | |
8316 | { | |
6e5abd65 PA |
8317 | struct cleanup *old_chain; |
8318 | char *str; | |
8319 | ||
c906108c | 8320 | *p = '\0'; |
6e5abd65 PA |
8321 | str = escape_buffer (buf2, p - buf2); |
8322 | old_chain = make_cleanup (xfree, str); | |
8323 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 8324 | gdb_flush (gdb_stdlog); |
6e5abd65 | 8325 | do_cleanups (old_chain); |
c906108c | 8326 | } |
c33e31fd | 8327 | remote_serial_write (buf2, p - buf2); |
c906108c | 8328 | |
a6f3e723 SL |
8329 | /* If this is a no acks version of the remote protocol, send the |
8330 | packet and move on. */ | |
8331 | if (rs->noack_mode) | |
8332 | break; | |
8333 | ||
74531fed PA |
8334 | /* Read until either a timeout occurs (-2) or '+' is read. |
8335 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8336 | while (1) |
8337 | { | |
8338 | ch = readchar (remote_timeout); | |
8339 | ||
c5aa993b | 8340 | if (remote_debug) |
c906108c SS |
8341 | { |
8342 | switch (ch) | |
8343 | { | |
8344 | case '+': | |
1216fa2c | 8345 | case '-': |
c906108c SS |
8346 | case SERIAL_TIMEOUT: |
8347 | case '$': | |
74531fed | 8348 | case '%': |
c906108c SS |
8349 | if (started_error_output) |
8350 | { | |
8351 | putchar_unfiltered ('\n'); | |
8352 | started_error_output = 0; | |
8353 | } | |
8354 | } | |
8355 | } | |
8356 | ||
8357 | switch (ch) | |
8358 | { | |
8359 | case '+': | |
8360 | if (remote_debug) | |
0f71a2f6 | 8361 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 8362 | do_cleanups (old_chain); |
c906108c | 8363 | return 1; |
1216fa2c AC |
8364 | case '-': |
8365 | if (remote_debug) | |
8366 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8367 | /* FALLTHROUGH */ |
c906108c | 8368 | case SERIAL_TIMEOUT: |
c5aa993b | 8369 | tcount++; |
c906108c | 8370 | if (tcount > 3) |
a5c0808e PA |
8371 | { |
8372 | do_cleanups (old_chain); | |
8373 | return 0; | |
8374 | } | |
23860348 | 8375 | break; /* Retransmit buffer. */ |
c906108c SS |
8376 | case '$': |
8377 | { | |
40e3f985 | 8378 | if (remote_debug) |
2bc416ba | 8379 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8380 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8381 | /* It's probably an old response sent because an ACK |
8382 | was lost. Gobble up the packet and ack it so it | |
8383 | doesn't get retransmitted when we resend this | |
8384 | packet. */ | |
6d820c5c | 8385 | skip_frame (); |
c33e31fd | 8386 | remote_serial_write ("+", 1); |
23860348 | 8387 | continue; /* Now, go look for +. */ |
c906108c | 8388 | } |
74531fed PA |
8389 | |
8390 | case '%': | |
8391 | { | |
8392 | int val; | |
8393 | ||
8394 | /* If we got a notification, handle it, and go back to looking | |
8395 | for an ack. */ | |
8396 | /* We've found the start of a notification. Now | |
8397 | collect the data. */ | |
8398 | val = read_frame (&rs->buf, &rs->buf_size); | |
8399 | if (val >= 0) | |
8400 | { | |
8401 | if (remote_debug) | |
8402 | { | |
6e5abd65 PA |
8403 | struct cleanup *old_chain; |
8404 | char *str; | |
8405 | ||
8406 | str = escape_buffer (rs->buf, val); | |
8407 | old_chain = make_cleanup (xfree, str); | |
8408 | fprintf_unfiltered (gdb_stdlog, | |
8409 | " Notification received: %s\n", | |
8410 | str); | |
8411 | do_cleanups (old_chain); | |
74531fed | 8412 | } |
5965e028 | 8413 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8414 | /* We're in sync now, rewait for the ack. */ |
8415 | tcount = 0; | |
8416 | } | |
8417 | else | |
8418 | { | |
8419 | if (remote_debug) | |
8420 | { | |
8421 | if (!started_error_output) | |
8422 | { | |
8423 | started_error_output = 1; | |
8424 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8425 | } | |
8426 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8427 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8428 | } | |
8429 | } | |
8430 | continue; | |
8431 | } | |
8432 | /* fall-through */ | |
c906108c SS |
8433 | default: |
8434 | if (remote_debug) | |
8435 | { | |
8436 | if (!started_error_output) | |
8437 | { | |
8438 | started_error_output = 1; | |
0f71a2f6 | 8439 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8440 | } |
0f71a2f6 | 8441 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8442 | } |
8443 | continue; | |
8444 | } | |
23860348 | 8445 | break; /* Here to retransmit. */ |
c906108c SS |
8446 | } |
8447 | ||
8448 | #if 0 | |
8449 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8450 | able to get out next time we call QUIT, without anything as |
8451 | violent as interrupt_query. If we want to provide a way out of | |
8452 | here without getting to the next QUIT, it should be based on | |
8453 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8454 | if (quit_flag) |
8455 | { | |
8456 | quit_flag = 0; | |
8457 | interrupt_query (); | |
8458 | } | |
8459 | #endif | |
8460 | } | |
a5c0808e PA |
8461 | |
8462 | do_cleanups (old_chain); | |
a6f3e723 | 8463 | return 0; |
c906108c SS |
8464 | } |
8465 | ||
6d820c5c DJ |
8466 | /* Come here after finding the start of a frame when we expected an |
8467 | ack. Do our best to discard the rest of this packet. */ | |
8468 | ||
8469 | static void | |
8470 | skip_frame (void) | |
8471 | { | |
8472 | int c; | |
8473 | ||
8474 | while (1) | |
8475 | { | |
8476 | c = readchar (remote_timeout); | |
8477 | switch (c) | |
8478 | { | |
8479 | case SERIAL_TIMEOUT: | |
8480 | /* Nothing we can do. */ | |
8481 | return; | |
8482 | case '#': | |
8483 | /* Discard the two bytes of checksum and stop. */ | |
8484 | c = readchar (remote_timeout); | |
8485 | if (c >= 0) | |
8486 | c = readchar (remote_timeout); | |
8487 | ||
8488 | return; | |
8489 | case '*': /* Run length encoding. */ | |
8490 | /* Discard the repeat count. */ | |
8491 | c = readchar (remote_timeout); | |
8492 | if (c < 0) | |
8493 | return; | |
8494 | break; | |
8495 | default: | |
8496 | /* A regular character. */ | |
8497 | break; | |
8498 | } | |
8499 | } | |
8500 | } | |
8501 | ||
c906108c | 8502 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8503 | into *BUF, verifying the checksum, length, and handling run-length |
8504 | compression. NUL terminate the buffer. If there is not enough room, | |
8505 | expand *BUF using xrealloc. | |
c906108c | 8506 | |
c2d11a7d JM |
8507 | Returns -1 on error, number of characters in buffer (ignoring the |
8508 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8509 | SERIAL status indications). */ |
c2d11a7d JM |
8510 | |
8511 | static long | |
6d820c5c DJ |
8512 | read_frame (char **buf_p, |
8513 | long *sizeof_buf) | |
c906108c SS |
8514 | { |
8515 | unsigned char csum; | |
c2d11a7d | 8516 | long bc; |
c906108c | 8517 | int c; |
6d820c5c | 8518 | char *buf = *buf_p; |
a6f3e723 | 8519 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8520 | |
8521 | csum = 0; | |
c2d11a7d | 8522 | bc = 0; |
c906108c SS |
8523 | |
8524 | while (1) | |
8525 | { | |
8526 | c = readchar (remote_timeout); | |
c906108c SS |
8527 | switch (c) |
8528 | { | |
8529 | case SERIAL_TIMEOUT: | |
8530 | if (remote_debug) | |
0f71a2f6 | 8531 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8532 | return -1; |
c906108c SS |
8533 | case '$': |
8534 | if (remote_debug) | |
0f71a2f6 JM |
8535 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8536 | gdb_stdlog); | |
23860348 | 8537 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8538 | case '#': |
8539 | { | |
8540 | unsigned char pktcsum; | |
e1b09194 AC |
8541 | int check_0 = 0; |
8542 | int check_1 = 0; | |
c906108c | 8543 | |
c2d11a7d | 8544 | buf[bc] = '\0'; |
c906108c | 8545 | |
e1b09194 AC |
8546 | check_0 = readchar (remote_timeout); |
8547 | if (check_0 >= 0) | |
8548 | check_1 = readchar (remote_timeout); | |
802188a7 | 8549 | |
e1b09194 AC |
8550 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8551 | { | |
8552 | if (remote_debug) | |
2bc416ba | 8553 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8554 | gdb_stdlog); |
e1b09194 AC |
8555 | return -1; |
8556 | } | |
8557 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8558 | { |
8559 | if (remote_debug) | |
2bc416ba | 8560 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8561 | gdb_stdlog); |
40e3f985 FN |
8562 | return -1; |
8563 | } | |
c906108c | 8564 | |
a6f3e723 SL |
8565 | /* Don't recompute the checksum; with no ack packets we |
8566 | don't have any way to indicate a packet retransmission | |
8567 | is necessary. */ | |
8568 | if (rs->noack_mode) | |
8569 | return bc; | |
8570 | ||
e1b09194 | 8571 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8572 | if (csum == pktcsum) |
c2d11a7d | 8573 | return bc; |
c906108c | 8574 | |
c5aa993b | 8575 | if (remote_debug) |
c906108c | 8576 | { |
6e5abd65 PA |
8577 | struct cleanup *old_chain; |
8578 | char *str; | |
8579 | ||
8580 | str = escape_buffer (buf, bc); | |
8581 | old_chain = make_cleanup (xfree, str); | |
8582 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8583 | "Bad checksum, sentsum=0x%x, " |
8584 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
8585 | pktcsum, csum, str); |
8586 | do_cleanups (old_chain); | |
c906108c | 8587 | } |
c2d11a7d | 8588 | /* Number of characters in buffer ignoring trailing |
23860348 | 8589 | NULL. */ |
c2d11a7d | 8590 | return -1; |
c906108c | 8591 | } |
23860348 | 8592 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8593 | { |
8594 | int repeat; | |
c906108c | 8595 | |
a744cf53 | 8596 | csum += c; |
b4501125 AC |
8597 | c = readchar (remote_timeout); |
8598 | csum += c; | |
23860348 | 8599 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8600 | |
23860348 | 8601 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8602 | |
6d820c5c | 8603 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8604 | { |
6d820c5c DJ |
8605 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8606 | { | |
8607 | /* Make some more room in the buffer. */ | |
8608 | *sizeof_buf += repeat; | |
224c3ddb | 8609 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
8610 | buf = *buf_p; |
8611 | } | |
8612 | ||
c2d11a7d JM |
8613 | memset (&buf[bc], buf[bc - 1], repeat); |
8614 | bc += repeat; | |
c2c6d25f JM |
8615 | continue; |
8616 | } | |
8617 | ||
c2d11a7d | 8618 | buf[bc] = '\0'; |
6d820c5c | 8619 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8620 | return -1; |
c2c6d25f | 8621 | } |
c906108c | 8622 | default: |
6d820c5c | 8623 | if (bc >= *sizeof_buf - 1) |
c906108c | 8624 | { |
6d820c5c DJ |
8625 | /* Make some more room in the buffer. */ |
8626 | *sizeof_buf *= 2; | |
224c3ddb | 8627 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 8628 | buf = *buf_p; |
c906108c SS |
8629 | } |
8630 | ||
6d820c5c DJ |
8631 | buf[bc++] = c; |
8632 | csum += c; | |
8633 | continue; | |
c906108c SS |
8634 | } |
8635 | } | |
8636 | } | |
8637 | ||
8638 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8639 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8640 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8641 | rather than timing out; this is used (in synchronous mode) to wait | |
8642 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
8643 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
8644 | don't have to change all the calls to getpkt to deal with the | |
8645 | return value, because at the moment I don't know what the right | |
23860348 | 8646 | thing to do it for those. */ |
c906108c | 8647 | void |
6d820c5c DJ |
8648 | getpkt (char **buf, |
8649 | long *sizeof_buf, | |
c2d11a7d | 8650 | int forever) |
d9fcf2fb | 8651 | { |
54887903 | 8652 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
8653 | } |
8654 | ||
8655 | ||
8656 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8657 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8658 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8659 | rather than timing out; this is used (in synchronous mode) to wait | |
8660 | for a target that is is executing user code to stop. If FOREVER == | |
8661 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8662 | indication of this to the caller. Otherwise return the number of |
8663 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8664 | enough reason to return to the caller. *IS_NOTIF is an output |
8665 | boolean that indicates whether *BUF holds a notification or not | |
8666 | (a regular packet). */ | |
74531fed | 8667 | |
3172dc30 | 8668 | static int |
74531fed | 8669 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8670 | int expecting_notif, int *is_notif) |
c906108c | 8671 | { |
2d717e4f | 8672 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8673 | int c; |
8674 | int tries; | |
8675 | int timeout; | |
df4b58fe | 8676 | int val = -1; |
c906108c | 8677 | |
2d717e4f DJ |
8678 | /* We're reading a new response. Make sure we don't look at a |
8679 | previously cached response. */ | |
8680 | rs->cached_wait_status = 0; | |
8681 | ||
6d820c5c | 8682 | strcpy (*buf, "timeout"); |
c906108c SS |
8683 | |
8684 | if (forever) | |
74531fed PA |
8685 | timeout = watchdog > 0 ? watchdog : -1; |
8686 | else if (expecting_notif) | |
8687 | timeout = 0; /* There should already be a char in the buffer. If | |
8688 | not, bail out. */ | |
c906108c SS |
8689 | else |
8690 | timeout = remote_timeout; | |
8691 | ||
8692 | #define MAX_TRIES 3 | |
8693 | ||
74531fed PA |
8694 | /* Process any number of notifications, and then return when |
8695 | we get a packet. */ | |
8696 | for (;;) | |
c906108c | 8697 | { |
d9c43928 | 8698 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8699 | times. */ |
8700 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8701 | { |
74531fed PA |
8702 | /* This can loop forever if the remote side sends us |
8703 | characters continuously, but if it pauses, we'll get | |
8704 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8705 | we'll count that as a retry. | |
8706 | ||
8707 | Note that even when forever is set, we will only wait | |
8708 | forever prior to the start of a packet. After that, we | |
8709 | expect characters to arrive at a brisk pace. They should | |
8710 | show up within remote_timeout intervals. */ | |
8711 | do | |
8712 | c = readchar (timeout); | |
8713 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8714 | |
8715 | if (c == SERIAL_TIMEOUT) | |
8716 | { | |
74531fed PA |
8717 | if (expecting_notif) |
8718 | return -1; /* Don't complain, it's normal to not get | |
8719 | anything in this case. */ | |
8720 | ||
23860348 | 8721 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8722 | { |
78a095c3 | 8723 | remote_unpush_target (); |
598d3636 JK |
8724 | throw_error (TARGET_CLOSE_ERROR, |
8725 | _("Watchdog timeout has expired. " | |
8726 | "Target detached.")); | |
c906108c | 8727 | } |
c906108c | 8728 | if (remote_debug) |
0f71a2f6 | 8729 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8730 | } |
74531fed PA |
8731 | else |
8732 | { | |
8733 | /* We've found the start of a packet or notification. | |
8734 | Now collect the data. */ | |
8735 | val = read_frame (buf, sizeof_buf); | |
8736 | if (val >= 0) | |
8737 | break; | |
8738 | } | |
8739 | ||
c33e31fd | 8740 | remote_serial_write ("-", 1); |
c906108c | 8741 | } |
c906108c | 8742 | |
74531fed PA |
8743 | if (tries > MAX_TRIES) |
8744 | { | |
8745 | /* We have tried hard enough, and just can't receive the | |
8746 | packet/notification. Give up. */ | |
8747 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8748 | |
74531fed PA |
8749 | /* Skip the ack char if we're in no-ack mode. */ |
8750 | if (!rs->noack_mode) | |
c33e31fd | 8751 | remote_serial_write ("+", 1); |
74531fed PA |
8752 | return -1; |
8753 | } | |
c906108c | 8754 | |
74531fed PA |
8755 | /* If we got an ordinary packet, return that to our caller. */ |
8756 | if (c == '$') | |
c906108c SS |
8757 | { |
8758 | if (remote_debug) | |
43e526b9 | 8759 | { |
6e5abd65 PA |
8760 | struct cleanup *old_chain; |
8761 | char *str; | |
8762 | ||
8763 | str = escape_buffer (*buf, val); | |
8764 | old_chain = make_cleanup (xfree, str); | |
8765 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8766 | do_cleanups (old_chain); | |
43e526b9 | 8767 | } |
a6f3e723 SL |
8768 | |
8769 | /* Skip the ack char if we're in no-ack mode. */ | |
8770 | if (!rs->noack_mode) | |
c33e31fd | 8771 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8772 | if (is_notif != NULL) |
8773 | *is_notif = 0; | |
0876f84a | 8774 | return val; |
c906108c SS |
8775 | } |
8776 | ||
74531fed PA |
8777 | /* If we got a notification, handle it, and go back to looking |
8778 | for a packet. */ | |
8779 | else | |
8780 | { | |
8781 | gdb_assert (c == '%'); | |
8782 | ||
8783 | if (remote_debug) | |
8784 | { | |
6e5abd65 PA |
8785 | struct cleanup *old_chain; |
8786 | char *str; | |
8787 | ||
8788 | str = escape_buffer (*buf, val); | |
8789 | old_chain = make_cleanup (xfree, str); | |
8790 | fprintf_unfiltered (gdb_stdlog, | |
8791 | " Notification received: %s\n", | |
8792 | str); | |
8793 | do_cleanups (old_chain); | |
74531fed | 8794 | } |
fee9eda9 YQ |
8795 | if (is_notif != NULL) |
8796 | *is_notif = 1; | |
c906108c | 8797 | |
5965e028 | 8798 | handle_notification (rs->notif_state, *buf); |
c906108c | 8799 | |
74531fed | 8800 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8801 | |
74531fed | 8802 | if (expecting_notif) |
fee9eda9 | 8803 | return val; |
74531fed PA |
8804 | } |
8805 | } | |
8806 | } | |
8807 | ||
8808 | static int | |
8809 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8810 | { | |
fee9eda9 | 8811 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8812 | } |
8813 | ||
8814 | static int | |
fee9eda9 YQ |
8815 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8816 | int *is_notif) | |
74531fed | 8817 | { |
fee9eda9 YQ |
8818 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8819 | is_notif); | |
c906108c | 8820 | } |
74531fed | 8821 | |
cbb8991c DB |
8822 | /* Check whether EVENT is a fork event for the process specified |
8823 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8824 | ||
8825 | static int | |
8826 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8827 | QUEUE_ITER (stop_reply_p) *iter, | |
8828 | stop_reply_p event, | |
8829 | void *data) | |
8830 | { | |
19ba03f4 | 8831 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
8832 | int parent_pid = *(int *) param->input; |
8833 | ||
8834 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8835 | { | |
8836 | struct remote_state *rs = get_remote_state (); | |
8837 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8838 | int res; | |
8839 | ||
8840 | res = remote_vkill (child_pid, rs); | |
8841 | if (res != 0) | |
8842 | error (_("Can't kill fork child process %d"), child_pid); | |
8843 | } | |
8844 | ||
8845 | return 1; | |
8846 | } | |
8847 | ||
8848 | /* Kill any new fork children of process PID that haven't been | |
8849 | processed by follow_fork. */ | |
8850 | ||
8851 | static void | |
8852 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8853 | { | |
8854 | struct thread_info *thread; | |
8855 | struct notif_client *notif = ¬if_client_stop; | |
8856 | struct queue_iter_param param; | |
8857 | ||
8858 | /* Kill the fork child threads of any threads in process PID | |
8859 | that are stopped at a fork event. */ | |
8860 | ALL_NON_EXITED_THREADS (thread) | |
8861 | { | |
8862 | struct target_waitstatus *ws = &thread->pending_follow; | |
8863 | ||
8864 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8865 | { | |
8866 | struct remote_state *rs = get_remote_state (); | |
8867 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8868 | int res; | |
8869 | ||
8870 | res = remote_vkill (child_pid, rs); | |
8871 | if (res != 0) | |
8872 | error (_("Can't kill fork child process %d"), child_pid); | |
8873 | } | |
8874 | } | |
8875 | ||
8876 | /* Check for any pending fork events (not reported or processed yet) | |
8877 | in process PID and kill those fork child threads as well. */ | |
8878 | remote_notif_get_pending_events (notif); | |
8879 | param.input = &pid; | |
8880 | param.output = NULL; | |
8881 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8882 | kill_child_of_pending_fork, ¶m); | |
8883 | } | |
8884 | ||
c906108c | 8885 | \f |
8020350c DB |
8886 | /* Target hook to kill the current inferior. */ |
8887 | ||
c906108c | 8888 | static void |
7d85a9c0 | 8889 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8890 | { |
8020350c DB |
8891 | int res = -1; |
8892 | int pid = ptid_get_pid (inferior_ptid); | |
8893 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 8894 | |
8020350c | 8895 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 8896 | { |
8020350c DB |
8897 | /* If we're stopped while forking and we haven't followed yet, |
8898 | kill the child task. We need to do this before killing the | |
8899 | parent task because if this is a vfork then the parent will | |
8900 | be sleeping. */ | |
8901 | kill_new_fork_children (pid, rs); | |
8902 | ||
8903 | res = remote_vkill (pid, rs); | |
8904 | if (res == 0) | |
0fdf84ca | 8905 | { |
8020350c | 8906 | target_mourn_inferior (); |
0fdf84ca PA |
8907 | return; |
8908 | } | |
8020350c | 8909 | } |
0fdf84ca | 8910 | |
8020350c DB |
8911 | /* If we are in 'target remote' mode and we are killing the only |
8912 | inferior, then we will tell gdbserver to exit and unpush the | |
8913 | target. */ | |
8914 | if (res == -1 && !remote_multi_process_p (rs) | |
8915 | && number_of_live_inferiors () == 1) | |
8916 | { | |
8917 | remote_kill_k (); | |
8918 | ||
8919 | /* We've killed the remote end, we get to mourn it. If we are | |
8920 | not in extended mode, mourning the inferior also unpushes | |
8921 | remote_ops from the target stack, which closes the remote | |
8922 | connection. */ | |
8923 | target_mourn_inferior (); | |
8924 | ||
8925 | return; | |
0fdf84ca | 8926 | } |
43ff13b4 | 8927 | |
8020350c | 8928 | error (_("Can't kill process")); |
43ff13b4 JM |
8929 | } |
8930 | ||
8020350c DB |
8931 | /* Send a kill request to the target using the 'vKill' packet. */ |
8932 | ||
82f73884 PA |
8933 | static int |
8934 | remote_vkill (int pid, struct remote_state *rs) | |
8935 | { | |
4082afcc | 8936 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8937 | return -1; |
8938 | ||
8939 | /* Tell the remote target to detach. */ | |
bba74b36 | 8940 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8941 | putpkt (rs->buf); |
8942 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8943 | ||
4082afcc PA |
8944 | switch (packet_ok (rs->buf, |
8945 | &remote_protocol_packets[PACKET_vKill])) | |
8946 | { | |
8947 | case PACKET_OK: | |
8948 | return 0; | |
8949 | case PACKET_ERROR: | |
8950 | return 1; | |
8951 | case PACKET_UNKNOWN: | |
8952 | return -1; | |
8953 | default: | |
8954 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8955 | } | |
82f73884 PA |
8956 | } |
8957 | ||
8020350c DB |
8958 | /* Send a kill request to the target using the 'k' packet. */ |
8959 | ||
82f73884 | 8960 | static void |
8020350c | 8961 | remote_kill_k (void) |
82f73884 | 8962 | { |
8020350c DB |
8963 | /* Catch errors so the user can quit from gdb even when we |
8964 | aren't on speaking terms with the remote system. */ | |
8965 | TRY | |
82f73884 | 8966 | { |
82f73884 | 8967 | putpkt ("k"); |
82f73884 | 8968 | } |
8020350c DB |
8969 | CATCH (ex, RETURN_MASK_ERROR) |
8970 | { | |
8971 | if (ex.error == TARGET_CLOSE_ERROR) | |
8972 | { | |
8973 | /* If we got an (EOF) error that caused the target | |
8974 | to go away, then we're done, that's what we wanted. | |
8975 | "k" is susceptible to cause a premature EOF, given | |
8976 | that the remote server isn't actually required to | |
8977 | reply to "k", and it can happen that it doesn't | |
8978 | even get to reply ACK to the "k". */ | |
8979 | return; | |
8980 | } | |
82f73884 | 8981 | |
8020350c DB |
8982 | /* Otherwise, something went wrong. We didn't actually kill |
8983 | the target. Just propagate the exception, and let the | |
8984 | user or higher layers decide what to do. */ | |
8985 | throw_exception (ex); | |
8986 | } | |
8987 | END_CATCH | |
82f73884 PA |
8988 | } |
8989 | ||
c906108c | 8990 | static void |
20f796c9 | 8991 | remote_mourn (struct target_ops *target) |
c906108c | 8992 | { |
8020350c | 8993 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 8994 | |
8020350c DB |
8995 | /* In 'target remote' mode with one inferior, we close the connection. */ |
8996 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
8997 | { | |
8998 | unpush_target (target); | |
c906108c | 8999 | |
8020350c DB |
9000 | /* remote_close takes care of doing most of the clean up. */ |
9001 | generic_mourn_inferior (); | |
9002 | return; | |
9003 | } | |
c906108c | 9004 | |
e24a49d8 PA |
9005 | /* In case we got here due to an error, but we're going to stay |
9006 | connected. */ | |
9007 | rs->waiting_for_stop_reply = 0; | |
9008 | ||
dc1981d7 PA |
9009 | /* If the current general thread belonged to the process we just |
9010 | detached from or has exited, the remote side current general | |
9011 | thread becomes undefined. Considering a case like this: | |
9012 | ||
9013 | - We just got here due to a detach. | |
9014 | - The process that we're detaching from happens to immediately | |
9015 | report a global breakpoint being hit in non-stop mode, in the | |
9016 | same thread we had selected before. | |
9017 | - GDB attaches to this process again. | |
9018 | - This event happens to be the next event we handle. | |
9019 | ||
9020 | GDB would consider that the current general thread didn't need to | |
9021 | be set on the stub side (with Hg), since for all it knew, | |
9022 | GENERAL_THREAD hadn't changed. | |
9023 | ||
9024 | Notice that although in all-stop mode, the remote server always | |
9025 | sets the current thread to the thread reporting the stop event, | |
9026 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9027 | not* change the current thread when reporting a breakpoint hit, | |
9028 | due to the decoupling of event reporting and event handling. | |
9029 | ||
9030 | To keep things simple, we always invalidate our notion of the | |
9031 | current thread. */ | |
47f8a51d | 9032 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9033 | |
8020350c | 9034 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9035 | generic_mourn_inferior (); |
9036 | ||
d729566a | 9037 | if (!have_inferiors ()) |
2d717e4f | 9038 | { |
82f73884 PA |
9039 | if (!remote_multi_process_p (rs)) |
9040 | { | |
9041 | /* Check whether the target is running now - some remote stubs | |
9042 | automatically restart after kill. */ | |
9043 | putpkt ("?"); | |
9044 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9045 | ||
9046 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9047 | { | |
3e43a32a MS |
9048 | /* Assume that the target has been restarted. Set |
9049 | inferior_ptid so that bits of core GDB realizes | |
9050 | there's something here, e.g., so that the user can | |
9051 | say "kill" again. */ | |
82f73884 PA |
9052 | inferior_ptid = magic_null_ptid; |
9053 | } | |
82f73884 | 9054 | } |
2d717e4f DJ |
9055 | } |
9056 | } | |
c906108c | 9057 | |
03583c20 | 9058 | static int |
2bfc0540 | 9059 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9060 | { |
4082afcc | 9061 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9062 | } |
9063 | ||
9064 | static void | |
9065 | extended_remote_disable_randomization (int val) | |
9066 | { | |
9067 | struct remote_state *rs = get_remote_state (); | |
9068 | char *reply; | |
9069 | ||
bba74b36 YQ |
9070 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9071 | val); | |
03583c20 UW |
9072 | putpkt (rs->buf); |
9073 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9074 | if (*reply == '\0') | |
9075 | error (_("Target does not support QDisableRandomization.")); | |
9076 | if (strcmp (reply, "OK") != 0) | |
9077 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9078 | } | |
9079 | ||
2d717e4f DJ |
9080 | static int |
9081 | extended_remote_run (char *args) | |
9082 | { | |
9083 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9084 | int len; |
94585166 | 9085 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9086 | |
2d717e4f DJ |
9087 | /* If the user has disabled vRun support, or we have detected that |
9088 | support is not available, do not try it. */ | |
4082afcc | 9089 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9090 | return -1; |
424163ea | 9091 | |
2d717e4f DJ |
9092 | strcpy (rs->buf, "vRun;"); |
9093 | len = strlen (rs->buf); | |
c906108c | 9094 | |
2d717e4f DJ |
9095 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9096 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9097 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9098 | strlen (remote_exec_file)); | |
2d717e4f | 9099 | |
d1a41061 | 9100 | gdb_assert (args != NULL); |
2d717e4f DJ |
9101 | if (*args) |
9102 | { | |
9103 | struct cleanup *back_to; | |
9104 | int i; | |
9105 | char **argv; | |
9106 | ||
d1a41061 | 9107 | argv = gdb_buildargv (args); |
6e366df1 | 9108 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
9109 | for (i = 0; argv[i] != NULL; i++) |
9110 | { | |
9111 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9112 | error (_("Argument list too long for run packet")); | |
9113 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9114 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9115 | strlen (argv[i])); | |
2d717e4f DJ |
9116 | } |
9117 | do_cleanups (back_to); | |
9118 | } | |
9119 | ||
9120 | rs->buf[len++] = '\0'; | |
9121 | ||
9122 | putpkt (rs->buf); | |
9123 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9124 | ||
4082afcc | 9125 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9126 | { |
4082afcc | 9127 | case PACKET_OK: |
3405876a | 9128 | /* We have a wait response. All is well. */ |
2d717e4f | 9129 | return 0; |
4082afcc PA |
9130 | case PACKET_UNKNOWN: |
9131 | return -1; | |
9132 | case PACKET_ERROR: | |
2d717e4f DJ |
9133 | if (remote_exec_file[0] == '\0') |
9134 | error (_("Running the default executable on the remote target failed; " | |
9135 | "try \"set remote exec-file\"?")); | |
9136 | else | |
9137 | error (_("Running \"%s\" on the remote target failed"), | |
9138 | remote_exec_file); | |
4082afcc PA |
9139 | default: |
9140 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9141 | } |
c906108c SS |
9142 | } |
9143 | ||
2d717e4f DJ |
9144 | /* In the extended protocol we want to be able to do things like |
9145 | "run" and have them basically work as expected. So we need | |
9146 | a special create_inferior function. We support changing the | |
9147 | executable file and the command line arguments, but not the | |
9148 | environment. */ | |
9149 | ||
43ff13b4 | 9150 | static void |
77a19445 TT |
9151 | extended_remote_create_inferior (struct target_ops *ops, |
9152 | char *exec_file, char *args, | |
9153 | char **env, int from_tty) | |
43ff13b4 | 9154 | { |
3405876a PA |
9155 | int run_worked; |
9156 | char *stop_reply; | |
9157 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9158 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9159 | |
43ff13b4 | 9160 | /* If running asynchronously, register the target file descriptor |
23860348 | 9161 | with the event loop. */ |
75c99385 | 9162 | if (target_can_async_p ()) |
6a3753b3 | 9163 | target_async (1); |
43ff13b4 | 9164 | |
03583c20 | 9165 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9166 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9167 | extended_remote_disable_randomization (disable_randomization); |
9168 | ||
43ff13b4 | 9169 | /* Now restart the remote server. */ |
3405876a PA |
9170 | run_worked = extended_remote_run (args) != -1; |
9171 | if (!run_worked) | |
2d717e4f DJ |
9172 | { |
9173 | /* vRun was not supported. Fail if we need it to do what the | |
9174 | user requested. */ | |
9175 | if (remote_exec_file[0]) | |
9176 | error (_("Remote target does not support \"set remote exec-file\"")); | |
9177 | if (args[0]) | |
9178 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 9179 | |
2d717e4f DJ |
9180 | /* Fall back to "R". */ |
9181 | extended_remote_restart (); | |
9182 | } | |
424163ea | 9183 | |
6c95b8df PA |
9184 | if (!have_inferiors ()) |
9185 | { | |
9186 | /* Clean up from the last time we ran, before we mark the target | |
9187 | running again. This will mark breakpoints uninserted, and | |
9188 | get_offsets may insert breakpoints. */ | |
9189 | init_thread_list (); | |
9190 | init_wait_for_inferior (); | |
9191 | } | |
45280a52 | 9192 | |
3405876a PA |
9193 | /* vRun's success return is a stop reply. */ |
9194 | stop_reply = run_worked ? rs->buf : NULL; | |
9195 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9196 | |
2d717e4f DJ |
9197 | /* Get updated offsets, if the stub uses qOffsets. */ |
9198 | get_offsets (); | |
2d717e4f | 9199 | } |
c906108c | 9200 | \f |
c5aa993b | 9201 | |
b775012e LM |
9202 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9203 | the list of conditions (in agent expression bytecode format), if any, the | |
9204 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9205 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9206 | |
9207 | static int | |
9208 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9209 | struct bp_target_info *bp_tgt, char *buf, |
9210 | char *buf_end) | |
b775012e LM |
9211 | { |
9212 | struct agent_expr *aexpr = NULL; | |
9213 | int i, ix; | |
b775012e LM |
9214 | |
9215 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
9216 | return 0; | |
9217 | ||
9218 | buf += strlen (buf); | |
bba74b36 | 9219 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9220 | buf++; |
9221 | ||
9222 | /* Send conditions to the target and free the vector. */ | |
9223 | for (ix = 0; | |
9224 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
9225 | ix++) | |
9226 | { | |
bba74b36 | 9227 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
9228 | buf += strlen (buf); |
9229 | for (i = 0; i < aexpr->len; ++i) | |
9230 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
9231 | *buf = '\0'; | |
9232 | } | |
b775012e LM |
9233 | return 0; |
9234 | } | |
9235 | ||
d3ce09f5 SS |
9236 | static void |
9237 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9238 | struct bp_target_info *bp_tgt, char *buf) | |
9239 | { | |
9240 | struct agent_expr *aexpr = NULL; | |
9241 | int i, ix; | |
9242 | ||
9243 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9244 | return; | |
9245 | ||
9246 | buf += strlen (buf); | |
9247 | ||
9248 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9249 | buf += strlen (buf); | |
9250 | ||
9251 | /* Concatenate all the agent expressions that are commands into the | |
9252 | cmds parameter. */ | |
9253 | for (ix = 0; | |
9254 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
9255 | ix++) | |
9256 | { | |
9257 | sprintf (buf, "X%x,", aexpr->len); | |
9258 | buf += strlen (buf); | |
9259 | for (i = 0; i < aexpr->len; ++i) | |
9260 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
9261 | *buf = '\0'; | |
9262 | } | |
d3ce09f5 SS |
9263 | } |
9264 | ||
8181d85f DJ |
9265 | /* Insert a breakpoint. On targets that have software breakpoint |
9266 | support, we ask the remote target to do the work; on targets | |
9267 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9268 | |
9269 | static int | |
3db08215 MM |
9270 | remote_insert_breakpoint (struct target_ops *ops, |
9271 | struct gdbarch *gdbarch, | |
a6d9a66e | 9272 | struct bp_target_info *bp_tgt) |
c906108c | 9273 | { |
d471ea57 AC |
9274 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9275 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9276 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9277 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9278 | |
4082afcc | 9279 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9280 | { |
0d5ed153 | 9281 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9282 | struct remote_state *rs; |
bba74b36 | 9283 | char *p, *endbuf; |
7c0f6dcc | 9284 | int bpsize; |
4fff2411 | 9285 | |
28439a30 PA |
9286 | /* Make sure the remote is pointing at the right process, if |
9287 | necessary. */ | |
9288 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9289 | set_general_process (); | |
9290 | ||
a1dcb23a | 9291 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
9292 | |
9293 | rs = get_remote_state (); | |
9294 | p = rs->buf; | |
bba74b36 | 9295 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9296 | |
96baa820 JM |
9297 | *(p++) = 'Z'; |
9298 | *(p++) = '0'; | |
9299 | *(p++) = ','; | |
7c0f6dcc | 9300 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9301 | p += hexnumstr (p, addr); |
bba74b36 | 9302 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 9303 | |
efcc2da7 | 9304 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9305 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9306 | |
78eff0ec | 9307 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9308 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9309 | ||
6d820c5c DJ |
9310 | putpkt (rs->buf); |
9311 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9312 | |
6d820c5c | 9313 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9314 | { |
d471ea57 AC |
9315 | case PACKET_ERROR: |
9316 | return -1; | |
9317 | case PACKET_OK: | |
7c0f6dcc JL |
9318 | bp_tgt->placed_address = addr; |
9319 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9320 | return 0; |
9321 | case PACKET_UNKNOWN: | |
9322 | break; | |
96baa820 JM |
9323 | } |
9324 | } | |
c906108c | 9325 | |
0000e5cc PA |
9326 | /* If this breakpoint has target-side commands but this stub doesn't |
9327 | support Z0 packets, throw error. */ | |
9328 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9329 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
9330 | Target doesn't support breakpoints that have target side commands.")); | |
9331 | ||
3db08215 | 9332 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9333 | } |
9334 | ||
9335 | static int | |
3db08215 MM |
9336 | remote_remove_breakpoint (struct target_ops *ops, |
9337 | struct gdbarch *gdbarch, | |
73971819 PA |
9338 | struct bp_target_info *bp_tgt, |
9339 | enum remove_bp_reason reason) | |
c906108c | 9340 | { |
8181d85f | 9341 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9342 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9343 | |
4082afcc | 9344 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9345 | { |
6d820c5c | 9346 | char *p = rs->buf; |
bba74b36 | 9347 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9348 | |
28439a30 PA |
9349 | /* Make sure the remote is pointing at the right process, if |
9350 | necessary. */ | |
9351 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9352 | set_general_process (); | |
9353 | ||
96baa820 JM |
9354 | *(p++) = 'z'; |
9355 | *(p++) = '0'; | |
9356 | *(p++) = ','; | |
9357 | ||
8181d85f DJ |
9358 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9359 | p += hexnumstr (p, addr); | |
bba74b36 | 9360 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 9361 | |
6d820c5c DJ |
9362 | putpkt (rs->buf); |
9363 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9364 | |
6d820c5c | 9365 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9366 | } |
9367 | ||
73971819 | 9368 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt, reason); |
c906108c SS |
9369 | } |
9370 | ||
f486487f | 9371 | static enum Z_packet_type |
d471ea57 AC |
9372 | watchpoint_to_Z_packet (int type) |
9373 | { | |
9374 | switch (type) | |
9375 | { | |
9376 | case hw_write: | |
bb858e6a | 9377 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9378 | break; |
9379 | case hw_read: | |
bb858e6a | 9380 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9381 | break; |
9382 | case hw_access: | |
bb858e6a | 9383 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9384 | break; |
9385 | default: | |
8e65ff28 | 9386 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9387 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9388 | } |
9389 | } | |
9390 | ||
3c3bea1c | 9391 | static int |
f486487f SM |
9392 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9393 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9394 | { |
d01949b6 | 9395 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9396 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9397 | char *p; |
d471ea57 | 9398 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9399 | |
4082afcc | 9400 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9401 | return 1; |
802188a7 | 9402 | |
28439a30 PA |
9403 | /* Make sure the remote is pointing at the right process, if |
9404 | necessary. */ | |
9405 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9406 | set_general_process (); | |
9407 | ||
bba74b36 | 9408 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9409 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9410 | addr = remote_address_masked (addr); |
9411 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9412 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9413 | |
6d820c5c DJ |
9414 | putpkt (rs->buf); |
9415 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9416 | |
6d820c5c | 9417 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9418 | { |
9419 | case PACKET_ERROR: | |
d471ea57 | 9420 | return -1; |
85d721b8 PA |
9421 | case PACKET_UNKNOWN: |
9422 | return 1; | |
d471ea57 AC |
9423 | case PACKET_OK: |
9424 | return 0; | |
9425 | } | |
8e65ff28 | 9426 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9427 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9428 | } |
9429 | ||
283002cf MR |
9430 | static int |
9431 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9432 | CORE_ADDR start, int length) | |
9433 | { | |
9434 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9435 | ||
9436 | return diff < length; | |
9437 | } | |
9438 | ||
d471ea57 | 9439 | |
3c3bea1c | 9440 | static int |
f486487f SM |
9441 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9442 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9443 | { |
d01949b6 | 9444 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9445 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9446 | char *p; |
d471ea57 AC |
9447 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9448 | ||
4082afcc | 9449 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9450 | return -1; |
802188a7 | 9451 | |
28439a30 PA |
9452 | /* Make sure the remote is pointing at the right process, if |
9453 | necessary. */ | |
9454 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9455 | set_general_process (); | |
9456 | ||
bba74b36 | 9457 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9458 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9459 | addr = remote_address_masked (addr); |
9460 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9461 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9462 | putpkt (rs->buf); |
9463 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9464 | |
6d820c5c | 9465 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9466 | { |
9467 | case PACKET_ERROR: | |
9468 | case PACKET_UNKNOWN: | |
9469 | return -1; | |
9470 | case PACKET_OK: | |
9471 | return 0; | |
9472 | } | |
8e65ff28 | 9473 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9474 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9475 | } |
9476 | ||
3c3bea1c | 9477 | |
501eef12 | 9478 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9479 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9480 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9481 | |
480a3f21 | 9482 | static int |
31568a15 TT |
9483 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9484 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9485 | { |
9486 | if (remote_hw_watchpoint_length_limit == 0) | |
9487 | return 0; | |
9488 | else if (remote_hw_watchpoint_length_limit < 0) | |
9489 | return 1; | |
9490 | else if (len <= remote_hw_watchpoint_length_limit) | |
9491 | return 1; | |
9492 | else | |
9493 | return 0; | |
9494 | } | |
9495 | ||
b9362cc7 | 9496 | static int |
5461485a | 9497 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9498 | enum bptype type, int cnt, int ot) |
96baa820 | 9499 | { |
3c3bea1c GS |
9500 | if (type == bp_hardware_breakpoint) |
9501 | { | |
9502 | if (remote_hw_breakpoint_limit == 0) | |
9503 | return 0; | |
501eef12 AC |
9504 | else if (remote_hw_breakpoint_limit < 0) |
9505 | return 1; | |
3c3bea1c GS |
9506 | else if (cnt <= remote_hw_breakpoint_limit) |
9507 | return 1; | |
9508 | } | |
9509 | else | |
9510 | { | |
9511 | if (remote_hw_watchpoint_limit == 0) | |
9512 | return 0; | |
501eef12 AC |
9513 | else if (remote_hw_watchpoint_limit < 0) |
9514 | return 1; | |
3c3bea1c GS |
9515 | else if (ot) |
9516 | return -1; | |
9517 | else if (cnt <= remote_hw_watchpoint_limit) | |
9518 | return 1; | |
9519 | } | |
9520 | return -1; | |
9521 | } | |
9522 | ||
f7e6eed5 PA |
9523 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9524 | ||
9525 | static int | |
9526 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9527 | { | |
799a2abe | 9528 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9529 | |
799a2abe PA |
9530 | return (thread->priv != NULL |
9531 | && thread->priv->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT); | |
f7e6eed5 PA |
9532 | } |
9533 | ||
9534 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9535 | remote. */ | |
9536 | ||
9537 | static int | |
9538 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9539 | { | |
f7e6eed5 PA |
9540 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
9541 | } | |
9542 | ||
9543 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
9544 | ||
9545 | static int | |
9546 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9547 | { | |
799a2abe | 9548 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9549 | |
799a2abe PA |
9550 | return (thread->priv != NULL |
9551 | && thread->priv->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT); | |
f7e6eed5 PA |
9552 | } |
9553 | ||
9554 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
9555 | remote. */ | |
9556 | ||
9557 | static int | |
9558 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9559 | { | |
f7e6eed5 PA |
9560 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
9561 | } | |
9562 | ||
b9362cc7 | 9563 | static int |
6a109b6b | 9564 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 9565 | { |
799a2abe | 9566 | struct thread_info *thread = inferior_thread (); |
ee154bee | 9567 | |
799a2abe PA |
9568 | return (thread->priv != NULL |
9569 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT); | |
3c3bea1c GS |
9570 | } |
9571 | ||
4aa7a7f5 JJ |
9572 | static int |
9573 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 9574 | { |
799a2abe | 9575 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 9576 | |
799a2abe PA |
9577 | if (thread->priv != NULL |
9578 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT) | |
4aa7a7f5 | 9579 | { |
799a2abe PA |
9580 | *addr_p = thread->priv->watch_data_address; |
9581 | return 1; | |
4aa7a7f5 JJ |
9582 | } |
9583 | ||
799a2abe | 9584 | return 0; |
3c3bea1c GS |
9585 | } |
9586 | ||
9587 | ||
9588 | static int | |
23a26771 | 9589 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9590 | struct bp_target_info *bp_tgt) |
3c3bea1c | 9591 | { |
0d5ed153 | 9592 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9593 | struct remote_state *rs; |
bba74b36 | 9594 | char *p, *endbuf; |
dd61ec5c | 9595 | char *message; |
0d5ed153 | 9596 | int bpsize; |
802188a7 | 9597 | |
c8189ed1 | 9598 | /* The length field should be set to the size of a breakpoint |
8181d85f | 9599 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 9600 | |
0d5ed153 | 9601 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 9602 | |
4082afcc | 9603 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9604 | return -1; |
2bc416ba | 9605 | |
28439a30 PA |
9606 | /* Make sure the remote is pointing at the right process, if |
9607 | necessary. */ | |
9608 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9609 | set_general_process (); | |
9610 | ||
4fff2411 JZ |
9611 | rs = get_remote_state (); |
9612 | p = rs->buf; | |
bba74b36 | 9613 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 9614 | |
96baa820 JM |
9615 | *(p++) = 'Z'; |
9616 | *(p++) = '1'; | |
9617 | *(p++) = ','; | |
802188a7 | 9618 | |
0d5ed153 | 9619 | addr = remote_address_masked (addr); |
96baa820 | 9620 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 9621 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 9622 | |
efcc2da7 | 9623 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 9624 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9625 | |
78eff0ec | 9626 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
9627 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9628 | ||
6d820c5c DJ |
9629 | putpkt (rs->buf); |
9630 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9631 | |
6d820c5c | 9632 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9633 | { |
9634 | case PACKET_ERROR: | |
dd61ec5c MW |
9635 | if (rs->buf[1] == '.') |
9636 | { | |
9637 | message = strchr (rs->buf + 2, '.'); | |
9638 | if (message) | |
0316657e | 9639 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
9640 | } |
9641 | return -1; | |
d471ea57 AC |
9642 | case PACKET_UNKNOWN: |
9643 | return -1; | |
9644 | case PACKET_OK: | |
0d5ed153 MR |
9645 | bp_tgt->placed_address = addr; |
9646 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9647 | return 0; |
9648 | } | |
8e65ff28 | 9649 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9650 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9651 | } |
9652 | ||
d471ea57 | 9653 | |
802188a7 | 9654 | static int |
a64dc96c | 9655 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9656 | struct bp_target_info *bp_tgt) |
96baa820 | 9657 | { |
8181d85f | 9658 | CORE_ADDR addr; |
d01949b6 | 9659 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9660 | char *p = rs->buf; |
bba74b36 | 9661 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9662 | |
4082afcc | 9663 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9664 | return -1; |
802188a7 | 9665 | |
28439a30 PA |
9666 | /* Make sure the remote is pointing at the right process, if |
9667 | necessary. */ | |
9668 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9669 | set_general_process (); | |
9670 | ||
96baa820 JM |
9671 | *(p++) = 'z'; |
9672 | *(p++) = '1'; | |
9673 | *(p++) = ','; | |
802188a7 | 9674 | |
8181d85f | 9675 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9676 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9677 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9678 | |
6d820c5c DJ |
9679 | putpkt (rs->buf); |
9680 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9681 | |
6d820c5c | 9682 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9683 | { |
9684 | case PACKET_ERROR: | |
9685 | case PACKET_UNKNOWN: | |
9686 | return -1; | |
9687 | case PACKET_OK: | |
9688 | return 0; | |
9689 | } | |
8e65ff28 | 9690 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9691 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9692 | } |
96baa820 | 9693 | |
4a5e7a5b PA |
9694 | /* Verify memory using the "qCRC:" request. */ |
9695 | ||
9696 | static int | |
9697 | remote_verify_memory (struct target_ops *ops, | |
9698 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9699 | { | |
9700 | struct remote_state *rs = get_remote_state (); | |
9701 | unsigned long host_crc, target_crc; | |
9702 | char *tmp; | |
9703 | ||
936d2992 PA |
9704 | /* It doesn't make sense to use qCRC if the remote target is |
9705 | connected but not running. */ | |
9706 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9707 | { | |
9708 | enum packet_result result; | |
28439a30 | 9709 | |
936d2992 PA |
9710 | /* Make sure the remote is pointing at the right process. */ |
9711 | set_general_process (); | |
4a5e7a5b | 9712 | |
936d2992 PA |
9713 | /* FIXME: assumes lma can fit into long. */ |
9714 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9715 | (long) lma, (long) size); | |
9716 | putpkt (rs->buf); | |
4a5e7a5b | 9717 | |
936d2992 PA |
9718 | /* Be clever; compute the host_crc before waiting for target |
9719 | reply. */ | |
9720 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9721 | ||
9722 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9723 | |
936d2992 PA |
9724 | result = packet_ok (rs->buf, |
9725 | &remote_protocol_packets[PACKET_qCRC]); | |
9726 | if (result == PACKET_ERROR) | |
9727 | return -1; | |
9728 | else if (result == PACKET_OK) | |
9729 | { | |
9730 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9731 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9732 | |
936d2992 PA |
9733 | return (host_crc == target_crc); |
9734 | } | |
9735 | } | |
4a5e7a5b | 9736 | |
936d2992 | 9737 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9738 | } |
9739 | ||
c906108c SS |
9740 | /* compare-sections command |
9741 | ||
9742 | With no arguments, compares each loadable section in the exec bfd | |
9743 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9744 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9745 | |
c906108c | 9746 | static void |
fba45db2 | 9747 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9748 | { |
9749 | asection *s; | |
c906108c | 9750 | struct cleanup *old_chain; |
948f8e3d | 9751 | gdb_byte *sectdata; |
ce359b09 | 9752 | const char *sectname; |
c906108c SS |
9753 | bfd_size_type size; |
9754 | bfd_vma lma; | |
9755 | int matched = 0; | |
9756 | int mismatched = 0; | |
4a5e7a5b | 9757 | int res; |
95cf3b38 | 9758 | int read_only = 0; |
c906108c SS |
9759 | |
9760 | if (!exec_bfd) | |
8a3fe4f8 | 9761 | error (_("command cannot be used without an exec file")); |
c906108c | 9762 | |
28439a30 PA |
9763 | /* Make sure the remote is pointing at the right process. */ |
9764 | set_general_process (); | |
9765 | ||
95cf3b38 DT |
9766 | if (args != NULL && strcmp (args, "-r") == 0) |
9767 | { | |
9768 | read_only = 1; | |
9769 | args = NULL; | |
9770 | } | |
9771 | ||
c5aa993b | 9772 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9773 | { |
9774 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9775 | continue; /* Skip non-loadable section. */ |
c906108c | 9776 | |
95cf3b38 DT |
9777 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9778 | continue; /* Skip writeable sections */ | |
9779 | ||
2c500098 | 9780 | size = bfd_get_section_size (s); |
c906108c | 9781 | if (size == 0) |
0df8b418 | 9782 | continue; /* Skip zero-length section. */ |
c906108c | 9783 | |
ce359b09 | 9784 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9785 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9786 | continue; /* Not the section selected by user. */ |
c906108c | 9787 | |
0df8b418 | 9788 | matched = 1; /* Do this section. */ |
c906108c | 9789 | lma = s->lma; |
c906108c | 9790 | |
224c3ddb | 9791 | sectdata = (gdb_byte *) xmalloc (size); |
b8c9b27d | 9792 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9793 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9794 | |
4a5e7a5b PA |
9795 | res = target_verify_memory (sectdata, lma, size); |
9796 | ||
9797 | if (res == -1) | |
5af949e3 | 9798 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9799 | paddress (target_gdbarch (), lma), |
9800 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9801 | |
5af949e3 | 9802 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9803 | paddress (target_gdbarch (), lma), |
9804 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9805 | if (res) |
c906108c SS |
9806 | printf_filtered ("matched.\n"); |
9807 | else | |
c5aa993b JM |
9808 | { |
9809 | printf_filtered ("MIS-MATCHED!\n"); | |
9810 | mismatched++; | |
9811 | } | |
c906108c SS |
9812 | |
9813 | do_cleanups (old_chain); | |
9814 | } | |
9815 | if (mismatched > 0) | |
936d2992 | 9816 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9817 | the loaded file\n")); |
c906108c | 9818 | if (args && !matched) |
a3f17187 | 9819 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9820 | } |
9821 | ||
0e7f50da UW |
9822 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9823 | into remote target. The number of bytes written to the remote | |
9824 | target is returned, or -1 for error. */ | |
9825 | ||
9b409511 | 9826 | static enum target_xfer_status |
0e7f50da UW |
9827 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9828 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9829 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9830 | struct packet_config *packet) |
9831 | { | |
9832 | int i, buf_len; | |
9833 | ULONGEST n; | |
0e7f50da UW |
9834 | struct remote_state *rs = get_remote_state (); |
9835 | int max_size = get_memory_write_packet_size (); | |
9836 | ||
9837 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9838 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9839 | |
9840 | /* Insert header. */ | |
9841 | i = snprintf (rs->buf, max_size, | |
9842 | "qXfer:%s:write:%s:%s:", | |
9843 | object_name, annex ? annex : "", | |
9844 | phex_nz (offset, sizeof offset)); | |
9845 | max_size -= (i + 1); | |
9846 | ||
9847 | /* Escape as much data as fits into rs->buf. */ | |
9848 | buf_len = remote_escape_output | |
124e13d9 | 9849 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9850 | |
9851 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9852 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9853 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9854 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9855 | |
9856 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9857 | |
9858 | *xfered_len = n; | |
9859 | return TARGET_XFER_OK; | |
0e7f50da UW |
9860 | } |
9861 | ||
0876f84a DJ |
9862 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9863 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9864 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9865 | The number of bytes read may be less than LEN without indicating an | |
9866 | EOF. PACKET is checked and updated to indicate whether the remote | |
9867 | target supports this object. */ | |
9868 | ||
9b409511 | 9869 | static enum target_xfer_status |
0876f84a DJ |
9870 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9871 | const char *annex, | |
9872 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9873 | ULONGEST *xfered_len, |
0876f84a DJ |
9874 | struct packet_config *packet) |
9875 | { | |
0876f84a | 9876 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9877 | LONGEST i, n, packet_len; |
9878 | ||
9879 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9880 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9881 | |
9882 | /* Check whether we've cached an end-of-object packet that matches | |
9883 | this request. */ | |
8e88304f | 9884 | if (rs->finished_object) |
0876f84a | 9885 | { |
8e88304f TT |
9886 | if (strcmp (object_name, rs->finished_object) == 0 |
9887 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9888 | && offset == rs->finished_offset) | |
9b409511 YQ |
9889 | return TARGET_XFER_EOF; |
9890 | ||
0876f84a DJ |
9891 | |
9892 | /* Otherwise, we're now reading something different. Discard | |
9893 | the cache. */ | |
8e88304f TT |
9894 | xfree (rs->finished_object); |
9895 | xfree (rs->finished_annex); | |
9896 | rs->finished_object = NULL; | |
9897 | rs->finished_annex = NULL; | |
0876f84a DJ |
9898 | } |
9899 | ||
9900 | /* Request only enough to fit in a single packet. The actual data | |
9901 | may not, since we don't know how much of it will need to be escaped; | |
9902 | the target is free to respond with slightly less data. We subtract | |
9903 | five to account for the response type and the protocol frame. */ | |
9904 | n = min (get_remote_packet_size () - 5, len); | |
9905 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9906 | object_name, annex ? annex : "", | |
9907 | phex_nz (offset, sizeof offset), | |
9908 | phex_nz (n, sizeof n)); | |
9909 | i = putpkt (rs->buf); | |
9910 | if (i < 0) | |
2ed4b548 | 9911 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9912 | |
9913 | rs->buf[0] = '\0'; | |
9914 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9915 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9916 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9917 | |
9918 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9919 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9920 | ||
9921 | /* 'm' means there is (or at least might be) more data after this | |
9922 | batch. That does not make sense unless there's at least one byte | |
9923 | of data in this reply. */ | |
9924 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9925 | error (_("Remote qXfer reply contained no data.")); | |
9926 | ||
9927 | /* Got some data. */ | |
bc20a4af PA |
9928 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9929 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9930 | |
9931 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9932 | or possibly empty. If we have the final block of a non-empty |
9933 | object, record this fact to bypass a subsequent partial read. */ | |
9934 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9935 | { |
8e88304f TT |
9936 | rs->finished_object = xstrdup (object_name); |
9937 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9938 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9939 | } |
9940 | ||
9b409511 YQ |
9941 | if (i == 0) |
9942 | return TARGET_XFER_EOF; | |
9943 | else | |
9944 | { | |
9945 | *xfered_len = i; | |
9946 | return TARGET_XFER_OK; | |
9947 | } | |
0876f84a DJ |
9948 | } |
9949 | ||
9b409511 | 9950 | static enum target_xfer_status |
4b8a223f | 9951 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9952 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9953 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9954 | ULONGEST *xfered_len) | |
c906108c | 9955 | { |
82f73884 | 9956 | struct remote_state *rs; |
c906108c | 9957 | int i; |
6d820c5c | 9958 | char *p2; |
1e3ff5ad | 9959 | char query_type; |
124e13d9 | 9960 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 9961 | |
e6e4e701 | 9962 | set_remote_traceframe (); |
82f73884 PA |
9963 | set_general_thread (inferior_ptid); |
9964 | ||
9965 | rs = get_remote_state (); | |
9966 | ||
b2182ed2 | 9967 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
9968 | if (object == TARGET_OBJECT_MEMORY) |
9969 | { | |
2d717e4f DJ |
9970 | /* If the remote target is connected but not running, we should |
9971 | pass this request down to a lower stratum (e.g. the executable | |
9972 | file). */ | |
9973 | if (!target_has_execution) | |
9b409511 | 9974 | return TARGET_XFER_EOF; |
2d717e4f | 9975 | |
21e3b9b9 | 9976 | if (writebuf != NULL) |
124e13d9 SM |
9977 | return remote_write_bytes (offset, writebuf, len, unit_size, |
9978 | xfered_len); | |
21e3b9b9 | 9979 | else |
124e13d9 SM |
9980 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
9981 | xfered_len); | |
21e3b9b9 DJ |
9982 | } |
9983 | ||
0df8b418 | 9984 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
9985 | if (object == TARGET_OBJECT_SPU) |
9986 | { | |
9987 | if (readbuf) | |
9988 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
9989 | xfered_len, &remote_protocol_packets |
9990 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
9991 | else |
9992 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
9993 | xfered_len, &remote_protocol_packets |
9994 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
9995 | } |
9996 | ||
4aa995e1 PA |
9997 | /* Handle extra signal info using qxfer packets. */ |
9998 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
9999 | { | |
10000 | if (readbuf) | |
10001 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10002 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10003 | [PACKET_qXfer_siginfo_read]); |
10004 | else | |
3e43a32a | 10005 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10006 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10007 | &remote_protocol_packets |
10008 | [PACKET_qXfer_siginfo_write]); | |
10009 | } | |
10010 | ||
0fb4aa4b PA |
10011 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10012 | { | |
10013 | if (readbuf) | |
3e43a32a | 10014 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10015 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10016 | &remote_protocol_packets |
10017 | [PACKET_qXfer_statictrace_read]); | |
10018 | else | |
2ed4b548 | 10019 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10020 | } |
10021 | ||
a76d924d DJ |
10022 | /* Only handle flash writes. */ |
10023 | if (writebuf != NULL) | |
10024 | { | |
a76d924d DJ |
10025 | switch (object) |
10026 | { | |
10027 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10028 | return remote_flash_write (ops, offset, len, xfered_len, |
10029 | writebuf); | |
a76d924d DJ |
10030 | |
10031 | default: | |
2ed4b548 | 10032 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10033 | } |
10034 | } | |
4b8a223f | 10035 | |
1e3ff5ad AC |
10036 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10037 | objects!!! Instead specify new query packets. */ | |
10038 | switch (object) | |
c906108c | 10039 | { |
1e3ff5ad AC |
10040 | case TARGET_OBJECT_AVR: |
10041 | query_type = 'R'; | |
10042 | break; | |
802188a7 RM |
10043 | |
10044 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10045 | gdb_assert (annex == NULL); |
10046 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10047 | xfered_len, |
0876f84a | 10048 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10049 | |
23181151 DJ |
10050 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10051 | return remote_read_qxfer | |
9b409511 | 10052 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10053 | &remote_protocol_packets[PACKET_qXfer_features]); |
10054 | ||
cfa9d6d9 DJ |
10055 | case TARGET_OBJECT_LIBRARIES: |
10056 | return remote_read_qxfer | |
9b409511 | 10057 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10058 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10059 | ||
2268b414 JK |
10060 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10061 | return remote_read_qxfer | |
9b409511 | 10062 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10063 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10064 | ||
fd79ecee DJ |
10065 | case TARGET_OBJECT_MEMORY_MAP: |
10066 | gdb_assert (annex == NULL); | |
10067 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10068 | xfered_len, |
fd79ecee DJ |
10069 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10070 | ||
07e059b5 VP |
10071 | case TARGET_OBJECT_OSDATA: |
10072 | /* Should only get here if we're connected. */ | |
5d93a237 | 10073 | gdb_assert (rs->remote_desc); |
07e059b5 | 10074 | return remote_read_qxfer |
9b409511 | 10075 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10076 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10077 | ||
dc146f7c VP |
10078 | case TARGET_OBJECT_THREADS: |
10079 | gdb_assert (annex == NULL); | |
10080 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10081 | xfered_len, |
dc146f7c VP |
10082 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10083 | ||
b3b9301e PA |
10084 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10085 | gdb_assert (annex == NULL); | |
10086 | return remote_read_qxfer | |
9b409511 | 10087 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10088 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10089 | |
10090 | case TARGET_OBJECT_FDPIC: | |
10091 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10092 | xfered_len, |
78d85199 | 10093 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10094 | |
10095 | case TARGET_OBJECT_OPENVMS_UIB: | |
10096 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10097 | xfered_len, |
169081d0 TG |
10098 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10099 | ||
9accd112 MM |
10100 | case TARGET_OBJECT_BTRACE: |
10101 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10102 | xfered_len, |
9accd112 MM |
10103 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10104 | ||
f4abbc16 MM |
10105 | case TARGET_OBJECT_BTRACE_CONF: |
10106 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10107 | len, xfered_len, | |
10108 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10109 | ||
c78fa86a GB |
10110 | case TARGET_OBJECT_EXEC_FILE: |
10111 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10112 | len, xfered_len, | |
10113 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10114 | ||
1e3ff5ad | 10115 | default: |
2ed4b548 | 10116 | return TARGET_XFER_E_IO; |
c906108c SS |
10117 | } |
10118 | ||
0df8b418 | 10119 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10120 | large enough let the caller deal with it. */ |
ea9c271d | 10121 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10122 | return TARGET_XFER_E_IO; |
ea9c271d | 10123 | len = get_remote_packet_size (); |
1e3ff5ad | 10124 | |
23860348 | 10125 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10126 | if (!rs->remote_desc) |
8a3fe4f8 | 10127 | error (_("remote query is only available after target open")); |
c906108c | 10128 | |
1e3ff5ad | 10129 | gdb_assert (annex != NULL); |
4b8a223f | 10130 | gdb_assert (readbuf != NULL); |
c906108c | 10131 | |
6d820c5c | 10132 | p2 = rs->buf; |
c906108c SS |
10133 | *p2++ = 'q'; |
10134 | *p2++ = query_type; | |
10135 | ||
23860348 MS |
10136 | /* We used one buffer char for the remote protocol q command and |
10137 | another for the query type. As the remote protocol encapsulation | |
10138 | uses 4 chars plus one extra in case we are debugging | |
10139 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10140 | string. */ | |
c906108c | 10141 | i = 0; |
ea9c271d | 10142 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10143 | { |
1e3ff5ad AC |
10144 | /* Bad caller may have sent forbidden characters. */ |
10145 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10146 | *p2++ = annex[i]; | |
c906108c SS |
10147 | i++; |
10148 | } | |
1e3ff5ad AC |
10149 | *p2 = '\0'; |
10150 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10151 | |
6d820c5c | 10152 | i = putpkt (rs->buf); |
c5aa993b | 10153 | if (i < 0) |
2ed4b548 | 10154 | return TARGET_XFER_E_IO; |
c906108c | 10155 | |
6d820c5c DJ |
10156 | getpkt (&rs->buf, &rs->buf_size, 0); |
10157 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10158 | |
9b409511 YQ |
10159 | *xfered_len = strlen ((char *) readbuf); |
10160 | return TARGET_XFER_OK; | |
c906108c SS |
10161 | } |
10162 | ||
09c98b44 DB |
10163 | /* Implementation of to_get_memory_xfer_limit. */ |
10164 | ||
10165 | static ULONGEST | |
10166 | remote_get_memory_xfer_limit (struct target_ops *ops) | |
10167 | { | |
10168 | return get_memory_write_packet_size (); | |
10169 | } | |
10170 | ||
08388c79 DE |
10171 | static int |
10172 | remote_search_memory (struct target_ops* ops, | |
10173 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10174 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10175 | CORE_ADDR *found_addrp) | |
10176 | { | |
f5656ead | 10177 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10178 | struct remote_state *rs = get_remote_state (); |
10179 | int max_size = get_memory_write_packet_size (); | |
10180 | struct packet_config *packet = | |
10181 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10182 | /* Number of packet bytes used to encode the pattern; |
10183 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10184 | int escaped_pattern_len; |
0df8b418 | 10185 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10186 | int used_pattern_len; |
10187 | int i; | |
10188 | int found; | |
10189 | ULONGEST found_addr; | |
10190 | ||
10191 | /* Don't go to the target if we don't have to. | |
10192 | This is done before checking packet->support to avoid the possibility that | |
10193 | a success for this edge case means the facility works in general. */ | |
10194 | if (pattern_len > search_space_len) | |
10195 | return 0; | |
10196 | if (pattern_len == 0) | |
10197 | { | |
10198 | *found_addrp = start_addr; | |
10199 | return 1; | |
10200 | } | |
10201 | ||
10202 | /* If we already know the packet isn't supported, fall back to the simple | |
10203 | way of searching memory. */ | |
10204 | ||
4082afcc | 10205 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10206 | { |
10207 | /* Target doesn't provided special support, fall back and use the | |
10208 | standard support (copy memory and do the search here). */ | |
10209 | return simple_search_memory (ops, start_addr, search_space_len, | |
10210 | pattern, pattern_len, found_addrp); | |
10211 | } | |
10212 | ||
28439a30 PA |
10213 | /* Make sure the remote is pointing at the right process. */ |
10214 | set_general_process (); | |
10215 | ||
08388c79 DE |
10216 | /* Insert header. */ |
10217 | i = snprintf (rs->buf, max_size, | |
10218 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10219 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10220 | phex_nz (search_space_len, sizeof (search_space_len))); |
10221 | max_size -= (i + 1); | |
10222 | ||
10223 | /* Escape as much data as fits into rs->buf. */ | |
10224 | escaped_pattern_len = | |
124e13d9 | 10225 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10226 | &used_pattern_len, max_size); |
10227 | ||
10228 | /* Bail if the pattern is too large. */ | |
10229 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10230 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10231 | |
10232 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10233 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10234 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10235 | { | |
10236 | /* The request may not have worked because the command is not | |
10237 | supported. If so, fall back to the simple way. */ | |
10238 | if (packet->support == PACKET_DISABLE) | |
10239 | { | |
10240 | return simple_search_memory (ops, start_addr, search_space_len, | |
10241 | pattern, pattern_len, found_addrp); | |
10242 | } | |
10243 | return -1; | |
10244 | } | |
10245 | ||
10246 | if (rs->buf[0] == '0') | |
10247 | found = 0; | |
10248 | else if (rs->buf[0] == '1') | |
10249 | { | |
10250 | found = 1; | |
10251 | if (rs->buf[1] != ',') | |
10e0fa18 | 10252 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10253 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10254 | *found_addrp = found_addr; | |
10255 | } | |
10256 | else | |
10e0fa18 | 10257 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10258 | |
10259 | return found; | |
10260 | } | |
10261 | ||
96baa820 | 10262 | static void |
a30bf1f1 | 10263 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10264 | struct ui_file *outbuf) |
96baa820 | 10265 | { |
d01949b6 | 10266 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10267 | char *p = rs->buf; |
96baa820 | 10268 | |
5d93a237 | 10269 | if (!rs->remote_desc) |
8a3fe4f8 | 10270 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10271 | |
23860348 | 10272 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10273 | if (command == NULL) |
10274 | command = ""; | |
10275 | ||
23860348 | 10276 | /* The query prefix. */ |
2e9f7625 DJ |
10277 | strcpy (rs->buf, "qRcmd,"); |
10278 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10279 | |
3e43a32a MS |
10280 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10281 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10282 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10283 | |
23860348 | 10284 | /* Encode the actual command. */ |
a30bf1f1 | 10285 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10286 | |
6d820c5c | 10287 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10288 | error (_("Communication problem with target.")); |
96baa820 JM |
10289 | |
10290 | /* get/display the response */ | |
10291 | while (1) | |
10292 | { | |
2e9f7625 DJ |
10293 | char *buf; |
10294 | ||
00bf0b85 | 10295 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10296 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10297 | rs->buf[0] = '\0'; |
5b37825d PW |
10298 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10299 | { | |
10300 | /* Timeout. Continue to (try to) read responses. | |
10301 | This is better than stopping with an error, assuming the stub | |
10302 | is still executing the (long) monitor command. | |
10303 | If needed, the user can interrupt gdb using C-c, obtaining | |
10304 | an effect similar to stop on timeout. */ | |
10305 | continue; | |
10306 | } | |
2e9f7625 | 10307 | buf = rs->buf; |
96baa820 | 10308 | if (buf[0] == '\0') |
8a3fe4f8 | 10309 | error (_("Target does not support this command.")); |
96baa820 JM |
10310 | if (buf[0] == 'O' && buf[1] != 'K') |
10311 | { | |
23860348 | 10312 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10313 | continue; |
10314 | } | |
10315 | if (strcmp (buf, "OK") == 0) | |
10316 | break; | |
7be570e7 JM |
10317 | if (strlen (buf) == 3 && buf[0] == 'E' |
10318 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10319 | { | |
8a3fe4f8 | 10320 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10321 | } |
96baa820 JM |
10322 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10323 | { | |
10324 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10325 | |
96baa820 JM |
10326 | fputc_unfiltered (c, outbuf); |
10327 | } | |
10328 | break; | |
10329 | } | |
10330 | } | |
10331 | ||
fd79ecee DJ |
10332 | static VEC(mem_region_s) * |
10333 | remote_memory_map (struct target_ops *ops) | |
10334 | { | |
10335 | VEC(mem_region_s) *result = NULL; | |
10336 | char *text = target_read_stralloc (¤t_target, | |
10337 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
10338 | ||
10339 | if (text) | |
10340 | { | |
10341 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 10342 | |
fd79ecee DJ |
10343 | result = parse_memory_map (text); |
10344 | do_cleanups (back_to); | |
10345 | } | |
10346 | ||
10347 | return result; | |
10348 | } | |
10349 | ||
c906108c | 10350 | static void |
fba45db2 | 10351 | packet_command (char *args, int from_tty) |
c906108c | 10352 | { |
d01949b6 | 10353 | struct remote_state *rs = get_remote_state (); |
c906108c | 10354 | |
5d93a237 | 10355 | if (!rs->remote_desc) |
8a3fe4f8 | 10356 | error (_("command can only be used with remote target")); |
c906108c | 10357 | |
c5aa993b | 10358 | if (!args) |
8a3fe4f8 | 10359 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10360 | |
10361 | puts_filtered ("sending: "); | |
10362 | print_packet (args); | |
10363 | puts_filtered ("\n"); | |
10364 | putpkt (args); | |
10365 | ||
6d820c5c | 10366 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10367 | puts_filtered ("received: "); |
6d820c5c | 10368 | print_packet (rs->buf); |
c906108c SS |
10369 | puts_filtered ("\n"); |
10370 | } | |
10371 | ||
10372 | #if 0 | |
23860348 | 10373 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10374 | |
a14ed312 | 10375 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10376 | |
a14ed312 | 10377 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10378 | |
a14ed312 | 10379 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10380 | |
a14ed312 | 10381 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10382 | |
23860348 | 10383 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10384 | |
a14ed312 | 10385 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10386 | |
23860348 | 10387 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10388 | |
a14ed312 | 10389 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10390 | |
a14ed312 | 10391 | static void init_remote_threadtests (void); |
c906108c | 10392 | |
23860348 | 10393 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10394 | |
10395 | static void | |
fba45db2 | 10396 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10397 | { |
10398 | int sample_thread = SAMPLE_THREAD; | |
10399 | ||
a3f17187 | 10400 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10401 | set_general_thread (sample_thread); |
c906108c SS |
10402 | } |
10403 | ||
10404 | ||
10405 | static void | |
fba45db2 | 10406 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10407 | { |
10408 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10409 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10410 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10411 | |
79d7f229 | 10412 | if (remote_thread_alive (ptid)) |
c906108c SS |
10413 | printf_filtered ("PASS: Thread alive test\n"); |
10414 | else | |
10415 | printf_filtered ("FAIL: Thread alive test\n"); | |
10416 | } | |
10417 | ||
23860348 | 10418 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10419 | |
10420 | void | |
fba45db2 | 10421 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10422 | { |
10423 | char hexid[20]; | |
10424 | ||
23860348 | 10425 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10426 | hexid[16] = 0; |
10427 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10428 | } | |
10429 | ||
10430 | static void | |
fba45db2 | 10431 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10432 | { |
10433 | int startflag = 1; | |
10434 | threadref nextthread; | |
10435 | int done, result_count; | |
10436 | threadref threadlist[3]; | |
10437 | ||
10438 | printf_filtered ("Remote Threadlist test\n"); | |
10439 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10440 | &result_count, &threadlist[0])) | |
10441 | printf_filtered ("FAIL: threadlist test\n"); | |
10442 | else | |
10443 | { | |
10444 | threadref *scan = threadlist; | |
10445 | threadref *limit = scan + result_count; | |
10446 | ||
10447 | while (scan < limit) | |
10448 | output_threadid (" thread ", scan++); | |
10449 | } | |
10450 | } | |
10451 | ||
10452 | void | |
fba45db2 | 10453 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10454 | { |
10455 | output_threadid ("Threadid: ", &info->threadid); | |
10456 | printf_filtered ("Name: %s\n ", info->shortname); | |
10457 | printf_filtered ("State: %s\n", info->display); | |
10458 | printf_filtered ("other: %s\n\n", info->more_display); | |
10459 | } | |
10460 | ||
10461 | int | |
fba45db2 | 10462 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10463 | { |
10464 | int result; | |
10465 | int set; | |
10466 | struct gdb_ext_thread_info threadinfo; | |
10467 | ||
10468 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10469 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10470 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10471 | display_thread_info (&threadinfo); | |
10472 | return result; | |
10473 | } | |
10474 | ||
10475 | static void | |
fba45db2 | 10476 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10477 | { |
10478 | int athread = SAMPLE_THREAD; | |
10479 | threadref thread; | |
10480 | int set; | |
10481 | ||
10482 | int_to_threadref (&thread, athread); | |
10483 | printf_filtered ("Remote Threadinfo test\n"); | |
10484 | if (!get_and_display_threadinfo (&thread)) | |
10485 | printf_filtered ("FAIL cannot get thread info\n"); | |
10486 | } | |
10487 | ||
10488 | static int | |
fba45db2 | 10489 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10490 | { |
10491 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10492 | return get_and_display_threadinfo (ref); | |
10493 | } | |
10494 | ||
10495 | static void | |
fba45db2 | 10496 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10497 | { |
10498 | printf_filtered ("Remote Threadlist update test\n"); | |
10499 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10500 | } | |
10501 | ||
10502 | static void | |
10503 | init_remote_threadtests (void) | |
10504 | { | |
3e43a32a MS |
10505 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10506 | _("Fetch and print the remote list of " | |
10507 | "thread identifiers, one pkt only")); | |
c906108c | 10508 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10509 | _("Fetch and display info about one thread")); |
c906108c | 10510 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10511 | _("Test setting to a different thread")); |
c906108c | 10512 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10513 | _("Iterate through updating all remote thread info")); |
c906108c | 10514 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10515 | _(" Remote thread alive test ")); |
c906108c SS |
10516 | } |
10517 | ||
10518 | #endif /* 0 */ | |
10519 | ||
f3fb8c85 MS |
10520 | /* Convert a thread ID to a string. Returns the string in a static |
10521 | buffer. */ | |
10522 | ||
10523 | static char * | |
117de6a9 | 10524 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10525 | { |
79d7f229 | 10526 | static char buf[64]; |
82f73884 | 10527 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10528 | |
7cee1e54 PA |
10529 | if (ptid_equal (ptid, null_ptid)) |
10530 | return normal_pid_to_str (ptid); | |
10531 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10532 | { |
10533 | /* Printing an inferior target id. */ | |
10534 | ||
10535 | /* When multi-process extensions are off, there's no way in the | |
10536 | remote protocol to know the remote process id, if there's any | |
10537 | at all. There's one exception --- when we're connected with | |
10538 | target extended-remote, and we manually attached to a process | |
10539 | with "attach PID". We don't record anywhere a flag that | |
10540 | allows us to distinguish that case from the case of | |
10541 | connecting with extended-remote and the stub already being | |
10542 | attached to a process, and reporting yes to qAttached, hence | |
10543 | no smart special casing here. */ | |
10544 | if (!remote_multi_process_p (rs)) | |
10545 | { | |
10546 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10547 | return buf; | |
10548 | } | |
10549 | ||
10550 | return normal_pid_to_str (ptid); | |
82f73884 | 10551 | } |
ecd0ada5 | 10552 | else |
79d7f229 | 10553 | { |
ecd0ada5 PA |
10554 | if (ptid_equal (magic_null_ptid, ptid)) |
10555 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 10556 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
10557 | if (ptid_get_lwp (ptid) == 0) |
10558 | return normal_pid_to_str (ptid); | |
10559 | else | |
10560 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
10561 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
10562 | else |
10563 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 10564 | ptid_get_lwp (ptid)); |
79d7f229 PA |
10565 | return buf; |
10566 | } | |
f3fb8c85 MS |
10567 | } |
10568 | ||
38691318 KB |
10569 | /* Get the address of the thread local variable in OBJFILE which is |
10570 | stored at OFFSET within the thread local storage for thread PTID. */ | |
10571 | ||
10572 | static CORE_ADDR | |
117de6a9 PA |
10573 | remote_get_thread_local_address (struct target_ops *ops, |
10574 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 10575 | { |
4082afcc | 10576 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
10577 | { |
10578 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 10579 | char *p = rs->buf; |
82f73884 | 10580 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 10581 | enum packet_result result; |
38691318 KB |
10582 | |
10583 | strcpy (p, "qGetTLSAddr:"); | |
10584 | p += strlen (p); | |
82f73884 | 10585 | p = write_ptid (p, endp, ptid); |
38691318 KB |
10586 | *p++ = ','; |
10587 | p += hexnumstr (p, offset); | |
10588 | *p++ = ','; | |
10589 | p += hexnumstr (p, lm); | |
10590 | *p++ = '\0'; | |
10591 | ||
6d820c5c DJ |
10592 | putpkt (rs->buf); |
10593 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
10594 | result = packet_ok (rs->buf, |
10595 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 10596 | if (result == PACKET_OK) |
38691318 KB |
10597 | { |
10598 | ULONGEST result; | |
10599 | ||
6d820c5c | 10600 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
10601 | return result; |
10602 | } | |
571dd617 | 10603 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
10604 | throw_error (TLS_GENERIC_ERROR, |
10605 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 10606 | else |
109c3e39 AC |
10607 | throw_error (TLS_GENERIC_ERROR, |
10608 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
10609 | } |
10610 | else | |
109c3e39 AC |
10611 | throw_error (TLS_GENERIC_ERROR, |
10612 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
10613 | /* Not reached. */ |
10614 | return 0; | |
10615 | } | |
10616 | ||
711e434b PM |
10617 | /* Provide thread local base, i.e. Thread Information Block address. |
10618 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
10619 | ||
70221824 | 10620 | static int |
bd7ae0f5 | 10621 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 10622 | { |
4082afcc | 10623 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
10624 | { |
10625 | struct remote_state *rs = get_remote_state (); | |
10626 | char *p = rs->buf; | |
10627 | char *endp = rs->buf + get_remote_packet_size (); | |
10628 | enum packet_result result; | |
10629 | ||
10630 | strcpy (p, "qGetTIBAddr:"); | |
10631 | p += strlen (p); | |
10632 | p = write_ptid (p, endp, ptid); | |
10633 | *p++ = '\0'; | |
10634 | ||
10635 | putpkt (rs->buf); | |
10636 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10637 | result = packet_ok (rs->buf, | |
10638 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10639 | if (result == PACKET_OK) | |
10640 | { | |
10641 | ULONGEST result; | |
10642 | ||
10643 | unpack_varlen_hex (rs->buf, &result); | |
10644 | if (addr) | |
10645 | *addr = (CORE_ADDR) result; | |
10646 | return 1; | |
10647 | } | |
10648 | else if (result == PACKET_UNKNOWN) | |
10649 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10650 | else | |
10651 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10652 | } | |
10653 | else | |
10654 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10655 | /* Not reached. */ | |
10656 | return 0; | |
10657 | } | |
10658 | ||
29709017 DJ |
10659 | /* Support for inferring a target description based on the current |
10660 | architecture and the size of a 'g' packet. While the 'g' packet | |
10661 | can have any size (since optional registers can be left off the | |
10662 | end), some sizes are easily recognizable given knowledge of the | |
10663 | approximate architecture. */ | |
10664 | ||
10665 | struct remote_g_packet_guess | |
10666 | { | |
10667 | int bytes; | |
10668 | const struct target_desc *tdesc; | |
10669 | }; | |
10670 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10671 | DEF_VEC_O(remote_g_packet_guess_s); | |
10672 | ||
10673 | struct remote_g_packet_data | |
10674 | { | |
10675 | VEC(remote_g_packet_guess_s) *guesses; | |
10676 | }; | |
10677 | ||
10678 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10679 | ||
10680 | static void * | |
10681 | remote_g_packet_data_init (struct obstack *obstack) | |
10682 | { | |
10683 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10684 | } | |
10685 | ||
10686 | void | |
10687 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10688 | const struct target_desc *tdesc) | |
10689 | { | |
10690 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10691 | = ((struct remote_g_packet_data *) |
10692 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
10693 | struct remote_g_packet_guess new_guess, *guess; |
10694 | int ix; | |
10695 | ||
10696 | gdb_assert (tdesc != NULL); | |
10697 | ||
10698 | for (ix = 0; | |
10699 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10700 | ix++) | |
10701 | if (guess->bytes == bytes) | |
10702 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10703 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10704 | bytes); |
10705 | ||
10706 | new_guess.bytes = bytes; | |
10707 | new_guess.tdesc = tdesc; | |
10708 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10709 | } | |
10710 | ||
d962ef82 DJ |
10711 | /* Return 1 if remote_read_description would do anything on this target |
10712 | and architecture, 0 otherwise. */ | |
10713 | ||
10714 | static int | |
10715 | remote_read_description_p (struct target_ops *target) | |
10716 | { | |
10717 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10718 | = ((struct remote_g_packet_data *) |
10719 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
10720 | |
10721 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10722 | return 1; | |
10723 | ||
10724 | return 0; | |
10725 | } | |
10726 | ||
29709017 DJ |
10727 | static const struct target_desc * |
10728 | remote_read_description (struct target_ops *target) | |
10729 | { | |
10730 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10731 | = ((struct remote_g_packet_data *) |
10732 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 10733 | |
d962ef82 DJ |
10734 | /* Do not try this during initial connection, when we do not know |
10735 | whether there is a running but stopped thread. */ | |
10736 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10737 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10738 | |
29709017 DJ |
10739 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10740 | { | |
10741 | struct remote_g_packet_guess *guess; | |
10742 | int ix; | |
10743 | int bytes = send_g_packet (); | |
10744 | ||
10745 | for (ix = 0; | |
10746 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10747 | ix++) | |
10748 | if (guess->bytes == bytes) | |
10749 | return guess->tdesc; | |
10750 | ||
10751 | /* We discard the g packet. A minor optimization would be to | |
10752 | hold on to it, and fill the register cache once we have selected | |
10753 | an architecture, but it's too tricky to do safely. */ | |
10754 | } | |
10755 | ||
2117c711 | 10756 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10757 | } |
10758 | ||
a6b151f1 DJ |
10759 | /* Remote file transfer support. This is host-initiated I/O, not |
10760 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10761 | ||
10762 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10763 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10764 | decrease *LEFT. Otherwise raise an error. */ | |
10765 | ||
10766 | static void | |
10767 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10768 | { | |
10769 | int len = strlen (string); | |
10770 | ||
10771 | if (len > *left) | |
10772 | error (_("Packet too long for target.")); | |
10773 | ||
10774 | memcpy (*buffer, string, len); | |
10775 | *buffer += len; | |
10776 | *left -= len; | |
10777 | ||
10778 | /* NUL-terminate the buffer as a convenience, if there is | |
10779 | room. */ | |
10780 | if (*left) | |
10781 | **buffer = '\0'; | |
10782 | } | |
10783 | ||
10784 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10785 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10786 | decrease *LEFT. Otherwise raise an error. */ | |
10787 | ||
10788 | static void | |
10789 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10790 | int len) | |
10791 | { | |
10792 | if (2 * len > *left) | |
10793 | error (_("Packet too long for target.")); | |
10794 | ||
10795 | bin2hex (bytes, *buffer, len); | |
10796 | *buffer += 2 * len; | |
10797 | *left -= 2 * len; | |
10798 | ||
10799 | /* NUL-terminate the buffer as a convenience, if there is | |
10800 | room. */ | |
10801 | if (*left) | |
10802 | **buffer = '\0'; | |
10803 | } | |
10804 | ||
10805 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10806 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10807 | decrease *LEFT. Otherwise raise an error. */ | |
10808 | ||
10809 | static void | |
10810 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10811 | { | |
10812 | int len = hexnumlen (value); | |
10813 | ||
10814 | if (len > *left) | |
10815 | error (_("Packet too long for target.")); | |
10816 | ||
10817 | hexnumstr (*buffer, value); | |
10818 | *buffer += len; | |
10819 | *left -= len; | |
10820 | ||
10821 | /* NUL-terminate the buffer as a convenience, if there is | |
10822 | room. */ | |
10823 | if (*left) | |
10824 | **buffer = '\0'; | |
10825 | } | |
10826 | ||
10827 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10828 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10829 | was included, and *ATTACHMENT to point to the start of the annex | |
10830 | if any. The length of the packet isn't needed here; there may | |
10831 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10832 | ||
10833 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10834 | -1 is returned, the other variables may not be initialized. */ | |
10835 | ||
10836 | static int | |
10837 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10838 | int *remote_errno, char **attachment) | |
10839 | { | |
10840 | char *p, *p2; | |
10841 | ||
10842 | *remote_errno = 0; | |
10843 | *attachment = NULL; | |
10844 | ||
10845 | if (buffer[0] != 'F') | |
10846 | return -1; | |
10847 | ||
10848 | errno = 0; | |
10849 | *retcode = strtol (&buffer[1], &p, 16); | |
10850 | if (errno != 0 || p == &buffer[1]) | |
10851 | return -1; | |
10852 | ||
10853 | /* Check for ",errno". */ | |
10854 | if (*p == ',') | |
10855 | { | |
10856 | errno = 0; | |
10857 | *remote_errno = strtol (p + 1, &p2, 16); | |
10858 | if (errno != 0 || p + 1 == p2) | |
10859 | return -1; | |
10860 | p = p2; | |
10861 | } | |
10862 | ||
10863 | /* Check for ";attachment". If there is no attachment, the | |
10864 | packet should end here. */ | |
10865 | if (*p == ';') | |
10866 | { | |
10867 | *attachment = p + 1; | |
10868 | return 0; | |
10869 | } | |
10870 | else if (*p == '\0') | |
10871 | return 0; | |
10872 | else | |
10873 | return -1; | |
10874 | } | |
10875 | ||
10876 | /* Send a prepared I/O packet to the target and read its response. | |
10877 | The prepared packet is in the global RS->BUF before this function | |
10878 | is called, and the answer is there when we return. | |
10879 | ||
10880 | COMMAND_BYTES is the length of the request to send, which may include | |
10881 | binary data. WHICH_PACKET is the packet configuration to check | |
10882 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10883 | is set to the error number and -1 is returned. Otherwise the value | |
10884 | returned by the function is returned. | |
10885 | ||
10886 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10887 | attachment is expected; an error will be reported if there's a | |
10888 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10889 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10890 | attachment's length. */ | |
10891 | ||
10892 | static int | |
10893 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10894 | int *remote_errno, char **attachment, | |
10895 | int *attachment_len) | |
10896 | { | |
10897 | struct remote_state *rs = get_remote_state (); | |
10898 | int ret, bytes_read; | |
10899 | char *attachment_tmp; | |
10900 | ||
5d93a237 | 10901 | if (!rs->remote_desc |
4082afcc | 10902 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10903 | { |
10904 | *remote_errno = FILEIO_ENOSYS; | |
10905 | return -1; | |
10906 | } | |
10907 | ||
10908 | putpkt_binary (rs->buf, command_bytes); | |
10909 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10910 | ||
10911 | /* If it timed out, something is wrong. Don't try to parse the | |
10912 | buffer. */ | |
10913 | if (bytes_read < 0) | |
10914 | { | |
10915 | *remote_errno = FILEIO_EINVAL; | |
10916 | return -1; | |
10917 | } | |
10918 | ||
10919 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10920 | { | |
10921 | case PACKET_ERROR: | |
10922 | *remote_errno = FILEIO_EINVAL; | |
10923 | return -1; | |
10924 | case PACKET_UNKNOWN: | |
10925 | *remote_errno = FILEIO_ENOSYS; | |
10926 | return -1; | |
10927 | case PACKET_OK: | |
10928 | break; | |
10929 | } | |
10930 | ||
10931 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10932 | &attachment_tmp)) | |
10933 | { | |
10934 | *remote_errno = FILEIO_EINVAL; | |
10935 | return -1; | |
10936 | } | |
10937 | ||
10938 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10939 | if ((attachment_tmp == NULL && attachment != NULL) | |
10940 | || (attachment_tmp != NULL && attachment == NULL)) | |
10941 | { | |
10942 | *remote_errno = FILEIO_EINVAL; | |
10943 | return -1; | |
10944 | } | |
10945 | ||
10946 | /* If an attachment was found, it must point into the packet buffer; | |
10947 | work out how many bytes there were. */ | |
10948 | if (attachment_tmp != NULL) | |
10949 | { | |
10950 | *attachment = attachment_tmp; | |
10951 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10952 | } | |
10953 | ||
10954 | return ret; | |
10955 | } | |
10956 | ||
80152258 PA |
10957 | /* Invalidate the readahead cache. */ |
10958 | ||
10959 | static void | |
10960 | readahead_cache_invalidate (void) | |
10961 | { | |
10962 | struct remote_state *rs = get_remote_state (); | |
10963 | ||
10964 | rs->readahead_cache.fd = -1; | |
10965 | } | |
10966 | ||
10967 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
10968 | ||
10969 | static void | |
10970 | readahead_cache_invalidate_fd (int fd) | |
10971 | { | |
10972 | struct remote_state *rs = get_remote_state (); | |
10973 | ||
10974 | if (rs->readahead_cache.fd == fd) | |
10975 | rs->readahead_cache.fd = -1; | |
10976 | } | |
10977 | ||
15a201c8 GB |
10978 | /* Set the filesystem remote_hostio functions that take FILENAME |
10979 | arguments will use. Return 0 on success, or -1 if an error | |
10980 | occurs (and set *REMOTE_ERRNO). */ | |
10981 | ||
10982 | static int | |
10983 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
10984 | { | |
10985 | struct remote_state *rs = get_remote_state (); | |
10986 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
10987 | char *p = rs->buf; | |
10988 | int left = get_remote_packet_size () - 1; | |
10989 | char arg[9]; | |
10990 | int ret; | |
10991 | ||
10992 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10993 | return 0; | |
10994 | ||
10995 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
10996 | return 0; | |
10997 | ||
10998 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
10999 | ||
11000 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11001 | remote_buffer_add_string (&p, &left, arg); | |
11002 | ||
11003 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11004 | remote_errno, NULL, NULL); | |
11005 | ||
11006 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11007 | return 0; | |
11008 | ||
11009 | if (ret == 0) | |
11010 | rs->fs_pid = required_pid; | |
11011 | ||
11012 | return ret; | |
11013 | } | |
11014 | ||
12e2a5fd | 11015 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11016 | |
11017 | static int | |
cd897586 | 11018 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11019 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11020 | int flags, int mode, int warn_if_slow, |
11021 | int *remote_errno) | |
a6b151f1 DJ |
11022 | { |
11023 | struct remote_state *rs = get_remote_state (); | |
11024 | char *p = rs->buf; | |
11025 | int left = get_remote_packet_size () - 1; | |
11026 | ||
4313b8c0 GB |
11027 | if (warn_if_slow) |
11028 | { | |
11029 | static int warning_issued = 0; | |
11030 | ||
11031 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11032 | filename); | |
11033 | ||
11034 | if (!warning_issued) | |
11035 | { | |
11036 | warning (_("File transfers from remote targets can be slow." | |
11037 | " Use \"set sysroot\" to access files locally" | |
11038 | " instead.")); | |
11039 | warning_issued = 1; | |
11040 | } | |
11041 | } | |
11042 | ||
15a201c8 GB |
11043 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11044 | return -1; | |
11045 | ||
a6b151f1 DJ |
11046 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11047 | ||
11048 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11049 | strlen (filename)); | |
11050 | remote_buffer_add_string (&p, &left, ","); | |
11051 | ||
11052 | remote_buffer_add_int (&p, &left, flags); | |
11053 | remote_buffer_add_string (&p, &left, ","); | |
11054 | ||
11055 | remote_buffer_add_int (&p, &left, mode); | |
11056 | ||
11057 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11058 | remote_errno, NULL, NULL); | |
11059 | } | |
11060 | ||
12e2a5fd | 11061 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11062 | |
11063 | static int | |
0d866f62 TT |
11064 | remote_hostio_pwrite (struct target_ops *self, |
11065 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11066 | ULONGEST offset, int *remote_errno) |
11067 | { | |
11068 | struct remote_state *rs = get_remote_state (); | |
11069 | char *p = rs->buf; | |
11070 | int left = get_remote_packet_size (); | |
11071 | int out_len; | |
11072 | ||
80152258 PA |
11073 | readahead_cache_invalidate_fd (fd); |
11074 | ||
a6b151f1 DJ |
11075 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11076 | ||
11077 | remote_buffer_add_int (&p, &left, fd); | |
11078 | remote_buffer_add_string (&p, &left, ","); | |
11079 | ||
11080 | remote_buffer_add_int (&p, &left, offset); | |
11081 | remote_buffer_add_string (&p, &left, ","); | |
11082 | ||
124e13d9 | 11083 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11084 | get_remote_packet_size () - (p - rs->buf)); |
11085 | ||
11086 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11087 | remote_errno, NULL, NULL); | |
11088 | } | |
11089 | ||
80152258 PA |
11090 | /* Helper for the implementation of to_fileio_pread. Read the file |
11091 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11092 | |
11093 | static int | |
80152258 PA |
11094 | remote_hostio_pread_vFile (struct target_ops *self, |
11095 | int fd, gdb_byte *read_buf, int len, | |
11096 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11097 | { |
11098 | struct remote_state *rs = get_remote_state (); | |
11099 | char *p = rs->buf; | |
11100 | char *attachment; | |
11101 | int left = get_remote_packet_size (); | |
11102 | int ret, attachment_len; | |
11103 | int read_len; | |
11104 | ||
11105 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11106 | ||
11107 | remote_buffer_add_int (&p, &left, fd); | |
11108 | remote_buffer_add_string (&p, &left, ","); | |
11109 | ||
11110 | remote_buffer_add_int (&p, &left, len); | |
11111 | remote_buffer_add_string (&p, &left, ","); | |
11112 | ||
11113 | remote_buffer_add_int (&p, &left, offset); | |
11114 | ||
11115 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11116 | remote_errno, &attachment, | |
11117 | &attachment_len); | |
11118 | ||
11119 | if (ret < 0) | |
11120 | return ret; | |
11121 | ||
bc20a4af | 11122 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11123 | read_buf, len); |
11124 | if (read_len != ret) | |
11125 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11126 | ||
11127 | return ret; | |
11128 | } | |
11129 | ||
80152258 PA |
11130 | /* Serve pread from the readahead cache. Returns number of bytes |
11131 | read, or 0 if the request can't be served from the cache. */ | |
11132 | ||
11133 | static int | |
11134 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11135 | int fd, gdb_byte *read_buf, size_t len, | |
11136 | ULONGEST offset) | |
11137 | { | |
11138 | struct readahead_cache *cache = &rs->readahead_cache; | |
11139 | ||
11140 | if (cache->fd == fd | |
11141 | && cache->offset <= offset | |
11142 | && offset < cache->offset + cache->bufsize) | |
11143 | { | |
11144 | ULONGEST max = cache->offset + cache->bufsize; | |
11145 | ||
11146 | if (offset + len > max) | |
11147 | len = max - offset; | |
11148 | ||
11149 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11150 | return len; | |
11151 | } | |
11152 | ||
11153 | return 0; | |
11154 | } | |
11155 | ||
11156 | /* Implementation of to_fileio_pread. */ | |
11157 | ||
11158 | static int | |
11159 | remote_hostio_pread (struct target_ops *self, | |
11160 | int fd, gdb_byte *read_buf, int len, | |
11161 | ULONGEST offset, int *remote_errno) | |
11162 | { | |
11163 | int ret; | |
11164 | struct remote_state *rs = get_remote_state (); | |
11165 | struct readahead_cache *cache = &rs->readahead_cache; | |
11166 | ||
11167 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11168 | if (ret > 0) | |
11169 | { | |
11170 | cache->hit_count++; | |
11171 | ||
11172 | if (remote_debug) | |
11173 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11174 | pulongest (cache->hit_count)); | |
11175 | return ret; | |
11176 | } | |
11177 | ||
11178 | cache->miss_count++; | |
11179 | if (remote_debug) | |
11180 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11181 | pulongest (cache->miss_count)); | |
11182 | ||
11183 | cache->fd = fd; | |
11184 | cache->offset = offset; | |
11185 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11186 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11187 | |
11188 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11189 | cache->offset, remote_errno); | |
11190 | if (ret <= 0) | |
11191 | { | |
11192 | readahead_cache_invalidate_fd (fd); | |
11193 | return ret; | |
11194 | } | |
11195 | ||
11196 | cache->bufsize = ret; | |
11197 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11198 | } | |
11199 | ||
12e2a5fd | 11200 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11201 | |
11202 | static int | |
df39ea25 | 11203 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11204 | { |
11205 | struct remote_state *rs = get_remote_state (); | |
11206 | char *p = rs->buf; | |
11207 | int left = get_remote_packet_size () - 1; | |
11208 | ||
80152258 PA |
11209 | readahead_cache_invalidate_fd (fd); |
11210 | ||
a6b151f1 DJ |
11211 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11212 | ||
11213 | remote_buffer_add_int (&p, &left, fd); | |
11214 | ||
11215 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11216 | remote_errno, NULL, NULL); | |
11217 | } | |
11218 | ||
12e2a5fd | 11219 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11220 | |
11221 | static int | |
dbbca37d | 11222 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11223 | struct inferior *inf, const char *filename, |
11224 | int *remote_errno) | |
a6b151f1 DJ |
11225 | { |
11226 | struct remote_state *rs = get_remote_state (); | |
11227 | char *p = rs->buf; | |
11228 | int left = get_remote_packet_size () - 1; | |
11229 | ||
15a201c8 GB |
11230 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11231 | return -1; | |
11232 | ||
a6b151f1 DJ |
11233 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11234 | ||
11235 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11236 | strlen (filename)); | |
11237 | ||
11238 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11239 | remote_errno, NULL, NULL); | |
11240 | } | |
11241 | ||
12e2a5fd | 11242 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
11243 | |
11244 | static char * | |
fab5aa7c | 11245 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11246 | struct inferior *inf, const char *filename, |
11247 | int *remote_errno) | |
b9e7b9c3 UW |
11248 | { |
11249 | struct remote_state *rs = get_remote_state (); | |
11250 | char *p = rs->buf; | |
11251 | char *attachment; | |
11252 | int left = get_remote_packet_size (); | |
11253 | int len, attachment_len; | |
11254 | int read_len; | |
11255 | char *ret; | |
11256 | ||
15a201c8 GB |
11257 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11258 | return NULL; | |
11259 | ||
b9e7b9c3 UW |
11260 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11261 | ||
11262 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11263 | strlen (filename)); | |
11264 | ||
11265 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11266 | remote_errno, &attachment, | |
11267 | &attachment_len); | |
11268 | ||
11269 | if (len < 0) | |
11270 | return NULL; | |
11271 | ||
224c3ddb | 11272 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 11273 | |
bc20a4af PA |
11274 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11275 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
11276 | if (read_len != len) |
11277 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11278 | ||
11279 | ret[len] = '\0'; | |
11280 | return ret; | |
11281 | } | |
11282 | ||
12e2a5fd | 11283 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11284 | |
11285 | static int | |
11286 | remote_hostio_fstat (struct target_ops *self, | |
11287 | int fd, struct stat *st, | |
11288 | int *remote_errno) | |
11289 | { | |
11290 | struct remote_state *rs = get_remote_state (); | |
11291 | char *p = rs->buf; | |
11292 | int left = get_remote_packet_size (); | |
11293 | int attachment_len, ret; | |
11294 | char *attachment; | |
11295 | struct fio_stat fst; | |
11296 | int read_len; | |
11297 | ||
464b0089 GB |
11298 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11299 | ||
11300 | remote_buffer_add_int (&p, &left, fd); | |
11301 | ||
11302 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11303 | remote_errno, &attachment, | |
11304 | &attachment_len); | |
11305 | if (ret < 0) | |
0a93529c | 11306 | { |
464b0089 GB |
11307 | if (*remote_errno != FILEIO_ENOSYS) |
11308 | return ret; | |
11309 | ||
0a93529c GB |
11310 | /* Strictly we should return -1, ENOSYS here, but when |
11311 | "set sysroot remote:" was implemented in August 2008 | |
11312 | BFD's need for a stat function was sidestepped with | |
11313 | this hack. This was not remedied until March 2015 | |
11314 | so we retain the previous behavior to avoid breaking | |
11315 | compatibility. | |
11316 | ||
11317 | Note that the memset is a March 2015 addition; older | |
11318 | GDBs set st_size *and nothing else* so the structure | |
11319 | would have garbage in all other fields. This might | |
11320 | break something but retaining the previous behavior | |
11321 | here would be just too wrong. */ | |
11322 | ||
11323 | memset (st, 0, sizeof (struct stat)); | |
11324 | st->st_size = INT_MAX; | |
11325 | return 0; | |
11326 | } | |
11327 | ||
0a93529c GB |
11328 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11329 | (gdb_byte *) &fst, sizeof (fst)); | |
11330 | ||
11331 | if (read_len != ret) | |
11332 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11333 | ||
11334 | if (read_len != sizeof (fst)) | |
11335 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11336 | read_len, (int) sizeof (fst)); | |
11337 | ||
11338 | remote_fileio_to_host_stat (&fst, st); | |
11339 | ||
11340 | return 0; | |
11341 | } | |
11342 | ||
12e2a5fd | 11343 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11344 | |
11345 | static int | |
11346 | remote_filesystem_is_local (struct target_ops *self) | |
11347 | { | |
11348 | /* Valgrind GDB presents itself as a remote target but works | |
11349 | on the local filesystem: it does not implement remote get | |
11350 | and users are not expected to set a sysroot. To handle | |
11351 | this case we treat the remote filesystem as local if the | |
11352 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11353 | does not support vFile:open. */ | |
a3be80c3 | 11354 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11355 | { |
11356 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11357 | ||
11358 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11359 | { | |
11360 | int fd, remote_errno; | |
11361 | ||
11362 | /* Try opening a file to probe support. The supplied | |
11363 | filename is irrelevant, we only care about whether | |
11364 | the stub recognizes the packet or not. */ | |
07c138c8 | 11365 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11366 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11367 | &remote_errno); |
11368 | ||
11369 | if (fd >= 0) | |
11370 | remote_hostio_close (self, fd, &remote_errno); | |
11371 | ||
11372 | ps = packet_support (PACKET_vFile_open); | |
11373 | } | |
11374 | ||
11375 | if (ps == PACKET_DISABLE) | |
11376 | { | |
11377 | static int warning_issued = 0; | |
11378 | ||
11379 | if (!warning_issued) | |
11380 | { | |
11381 | warning (_("remote target does not support file" | |
11382 | " transfer, attempting to access files" | |
11383 | " from local filesystem.")); | |
11384 | warning_issued = 1; | |
11385 | } | |
11386 | ||
11387 | return 1; | |
11388 | } | |
11389 | } | |
11390 | ||
11391 | return 0; | |
11392 | } | |
11393 | ||
a6b151f1 DJ |
11394 | static int |
11395 | remote_fileio_errno_to_host (int errnum) | |
11396 | { | |
11397 | switch (errnum) | |
11398 | { | |
11399 | case FILEIO_EPERM: | |
11400 | return EPERM; | |
11401 | case FILEIO_ENOENT: | |
11402 | return ENOENT; | |
11403 | case FILEIO_EINTR: | |
11404 | return EINTR; | |
11405 | case FILEIO_EIO: | |
11406 | return EIO; | |
11407 | case FILEIO_EBADF: | |
11408 | return EBADF; | |
11409 | case FILEIO_EACCES: | |
11410 | return EACCES; | |
11411 | case FILEIO_EFAULT: | |
11412 | return EFAULT; | |
11413 | case FILEIO_EBUSY: | |
11414 | return EBUSY; | |
11415 | case FILEIO_EEXIST: | |
11416 | return EEXIST; | |
11417 | case FILEIO_ENODEV: | |
11418 | return ENODEV; | |
11419 | case FILEIO_ENOTDIR: | |
11420 | return ENOTDIR; | |
11421 | case FILEIO_EISDIR: | |
11422 | return EISDIR; | |
11423 | case FILEIO_EINVAL: | |
11424 | return EINVAL; | |
11425 | case FILEIO_ENFILE: | |
11426 | return ENFILE; | |
11427 | case FILEIO_EMFILE: | |
11428 | return EMFILE; | |
11429 | case FILEIO_EFBIG: | |
11430 | return EFBIG; | |
11431 | case FILEIO_ENOSPC: | |
11432 | return ENOSPC; | |
11433 | case FILEIO_ESPIPE: | |
11434 | return ESPIPE; | |
11435 | case FILEIO_EROFS: | |
11436 | return EROFS; | |
11437 | case FILEIO_ENOSYS: | |
11438 | return ENOSYS; | |
11439 | case FILEIO_ENAMETOOLONG: | |
11440 | return ENAMETOOLONG; | |
11441 | } | |
11442 | return -1; | |
11443 | } | |
11444 | ||
11445 | static char * | |
11446 | remote_hostio_error (int errnum) | |
11447 | { | |
11448 | int host_error = remote_fileio_errno_to_host (errnum); | |
11449 | ||
11450 | if (host_error == -1) | |
11451 | error (_("Unknown remote I/O error %d"), errnum); | |
11452 | else | |
11453 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11454 | } | |
11455 | ||
a6b151f1 DJ |
11456 | static void |
11457 | remote_hostio_close_cleanup (void *opaque) | |
11458 | { | |
11459 | int fd = *(int *) opaque; | |
11460 | int remote_errno; | |
11461 | ||
df39ea25 | 11462 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11463 | } |
11464 | ||
11465 | void | |
11466 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11467 | { | |
11468 | struct cleanup *back_to, *close_cleanup; | |
11469 | int retcode, fd, remote_errno, bytes, io_size; | |
11470 | FILE *file; | |
11471 | gdb_byte *buffer; | |
11472 | int bytes_in_buffer; | |
11473 | int saw_eof; | |
11474 | ULONGEST offset; | |
5d93a237 | 11475 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11476 | |
5d93a237 | 11477 | if (!rs->remote_desc) |
a6b151f1 DJ |
11478 | error (_("command can only be used with remote target")); |
11479 | ||
614c279d | 11480 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11481 | if (file == NULL) |
11482 | perror_with_name (local_file); | |
7c8a8b04 | 11483 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 11484 | |
07c138c8 | 11485 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11486 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11487 | | FILEIO_O_TRUNC), |
4313b8c0 | 11488 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11489 | if (fd == -1) |
11490 | remote_hostio_error (remote_errno); | |
11491 | ||
11492 | /* Send up to this many bytes at once. They won't all fit in the | |
11493 | remote packet limit, so we'll transfer slightly fewer. */ | |
11494 | io_size = get_remote_packet_size (); | |
224c3ddb | 11495 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11496 | make_cleanup (xfree, buffer); |
11497 | ||
11498 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11499 | ||
11500 | bytes_in_buffer = 0; | |
11501 | saw_eof = 0; | |
11502 | offset = 0; | |
11503 | while (bytes_in_buffer || !saw_eof) | |
11504 | { | |
11505 | if (!saw_eof) | |
11506 | { | |
3e43a32a MS |
11507 | bytes = fread (buffer + bytes_in_buffer, 1, |
11508 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
11509 | file); |
11510 | if (bytes == 0) | |
11511 | { | |
11512 | if (ferror (file)) | |
11513 | error (_("Error reading %s."), local_file); | |
11514 | else | |
11515 | { | |
11516 | /* EOF. Unless there is something still in the | |
11517 | buffer from the last iteration, we are done. */ | |
11518 | saw_eof = 1; | |
11519 | if (bytes_in_buffer == 0) | |
11520 | break; | |
11521 | } | |
11522 | } | |
11523 | } | |
11524 | else | |
11525 | bytes = 0; | |
11526 | ||
11527 | bytes += bytes_in_buffer; | |
11528 | bytes_in_buffer = 0; | |
11529 | ||
0d866f62 TT |
11530 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11531 | fd, buffer, bytes, | |
3e43a32a | 11532 | offset, &remote_errno); |
a6b151f1 DJ |
11533 | |
11534 | if (retcode < 0) | |
11535 | remote_hostio_error (remote_errno); | |
11536 | else if (retcode == 0) | |
11537 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11538 | else if (retcode < bytes) | |
11539 | { | |
11540 | /* Short write. Save the rest of the read data for the next | |
11541 | write. */ | |
11542 | bytes_in_buffer = bytes - retcode; | |
11543 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11544 | } | |
11545 | ||
11546 | offset += retcode; | |
11547 | } | |
11548 | ||
11549 | discard_cleanups (close_cleanup); | |
df39ea25 | 11550 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11551 | remote_hostio_error (remote_errno); |
11552 | ||
11553 | if (from_tty) | |
11554 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
11555 | do_cleanups (back_to); | |
11556 | } | |
11557 | ||
11558 | void | |
11559 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
11560 | { | |
11561 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 11562 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
11563 | FILE *file; |
11564 | gdb_byte *buffer; | |
11565 | ULONGEST offset; | |
5d93a237 | 11566 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11567 | |
5d93a237 | 11568 | if (!rs->remote_desc) |
a6b151f1 DJ |
11569 | error (_("command can only be used with remote target")); |
11570 | ||
07c138c8 | 11571 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
11572 | remote_file, FILEIO_O_RDONLY, 0, 0, |
11573 | &remote_errno); | |
a6b151f1 DJ |
11574 | if (fd == -1) |
11575 | remote_hostio_error (remote_errno); | |
11576 | ||
614c279d | 11577 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
11578 | if (file == NULL) |
11579 | perror_with_name (local_file); | |
7c8a8b04 | 11580 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
11581 | |
11582 | /* Send up to this many bytes at once. They won't all fit in the | |
11583 | remote packet limit, so we'll transfer slightly fewer. */ | |
11584 | io_size = get_remote_packet_size (); | |
224c3ddb | 11585 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11586 | make_cleanup (xfree, buffer); |
11587 | ||
11588 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11589 | ||
11590 | offset = 0; | |
11591 | while (1) | |
11592 | { | |
a3be983c TT |
11593 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
11594 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
11595 | if (bytes == 0) |
11596 | /* Success, but no bytes, means end-of-file. */ | |
11597 | break; | |
11598 | if (bytes == -1) | |
11599 | remote_hostio_error (remote_errno); | |
11600 | ||
11601 | offset += bytes; | |
11602 | ||
11603 | bytes = fwrite (buffer, 1, bytes, file); | |
11604 | if (bytes == 0) | |
11605 | perror_with_name (local_file); | |
11606 | } | |
11607 | ||
11608 | discard_cleanups (close_cleanup); | |
df39ea25 | 11609 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11610 | remote_hostio_error (remote_errno); |
11611 | ||
11612 | if (from_tty) | |
11613 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
11614 | do_cleanups (back_to); | |
11615 | } | |
11616 | ||
11617 | void | |
11618 | remote_file_delete (const char *remote_file, int from_tty) | |
11619 | { | |
11620 | int retcode, remote_errno; | |
5d93a237 | 11621 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11622 | |
5d93a237 | 11623 | if (!rs->remote_desc) |
a6b151f1 DJ |
11624 | error (_("command can only be used with remote target")); |
11625 | ||
dbbca37d | 11626 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 11627 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
11628 | if (retcode == -1) |
11629 | remote_hostio_error (remote_errno); | |
11630 | ||
11631 | if (from_tty) | |
11632 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
11633 | } | |
11634 | ||
11635 | static void | |
11636 | remote_put_command (char *args, int from_tty) | |
11637 | { | |
11638 | struct cleanup *back_to; | |
11639 | char **argv; | |
11640 | ||
d1a41061 PP |
11641 | if (args == NULL) |
11642 | error_no_arg (_("file to put")); | |
11643 | ||
11644 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11645 | back_to = make_cleanup_freeargv (argv); |
11646 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11647 | error (_("Invalid parameters to remote put")); | |
11648 | ||
11649 | remote_file_put (argv[0], argv[1], from_tty); | |
11650 | ||
11651 | do_cleanups (back_to); | |
11652 | } | |
11653 | ||
11654 | static void | |
11655 | remote_get_command (char *args, int from_tty) | |
11656 | { | |
11657 | struct cleanup *back_to; | |
11658 | char **argv; | |
11659 | ||
d1a41061 PP |
11660 | if (args == NULL) |
11661 | error_no_arg (_("file to get")); | |
11662 | ||
11663 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11664 | back_to = make_cleanup_freeargv (argv); |
11665 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11666 | error (_("Invalid parameters to remote get")); | |
11667 | ||
11668 | remote_file_get (argv[0], argv[1], from_tty); | |
11669 | ||
11670 | do_cleanups (back_to); | |
11671 | } | |
11672 | ||
11673 | static void | |
11674 | remote_delete_command (char *args, int from_tty) | |
11675 | { | |
11676 | struct cleanup *back_to; | |
11677 | char **argv; | |
11678 | ||
d1a41061 PP |
11679 | if (args == NULL) |
11680 | error_no_arg (_("file to delete")); | |
11681 | ||
11682 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11683 | back_to = make_cleanup_freeargv (argv); |
11684 | if (argv[0] == NULL || argv[1] != NULL) | |
11685 | error (_("Invalid parameters to remote delete")); | |
11686 | ||
11687 | remote_file_delete (argv[0], from_tty); | |
11688 | ||
11689 | do_cleanups (back_to); | |
11690 | } | |
11691 | ||
11692 | static void | |
11693 | remote_command (char *args, int from_tty) | |
11694 | { | |
635c7e8a | 11695 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
11696 | } |
11697 | ||
b2175913 | 11698 | static int |
19db3e69 | 11699 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 11700 | { |
4082afcc PA |
11701 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
11702 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
11703 | return 1; |
11704 | else | |
11705 | return 0; | |
b2175913 MS |
11706 | } |
11707 | ||
74531fed | 11708 | static int |
2a9a2795 | 11709 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
11710 | { |
11711 | return 1; | |
11712 | } | |
11713 | ||
03583c20 | 11714 | static int |
2bfc0540 | 11715 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
11716 | { |
11717 | /* Only supported in extended mode. */ | |
11718 | return 0; | |
11719 | } | |
11720 | ||
8a305172 | 11721 | static int |
86ce2668 | 11722 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
11723 | { |
11724 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 11725 | |
8020350c | 11726 | return remote_multi_process_p (rs); |
8a305172 PA |
11727 | } |
11728 | ||
70221824 | 11729 | static int |
782b2b07 SS |
11730 | remote_supports_cond_tracepoints (void) |
11731 | { | |
4082afcc | 11732 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
11733 | } |
11734 | ||
3788aec7 | 11735 | static int |
efcc2da7 | 11736 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 11737 | { |
4082afcc | 11738 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
11739 | } |
11740 | ||
70221824 | 11741 | static int |
7a697b8d SS |
11742 | remote_supports_fast_tracepoints (void) |
11743 | { | |
4082afcc | 11744 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
11745 | } |
11746 | ||
0fb4aa4b PA |
11747 | static int |
11748 | remote_supports_static_tracepoints (void) | |
11749 | { | |
4082afcc | 11750 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
11751 | } |
11752 | ||
1e4d1764 YQ |
11753 | static int |
11754 | remote_supports_install_in_trace (void) | |
11755 | { | |
4082afcc | 11756 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
11757 | } |
11758 | ||
d248b706 | 11759 | static int |
7d178d6a | 11760 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 11761 | { |
4082afcc PA |
11762 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11763 | == PACKET_ENABLE); | |
d248b706 KY |
11764 | } |
11765 | ||
3065dfb6 | 11766 | static int |
6de37a3a | 11767 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 11768 | { |
4082afcc | 11769 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11770 | } |
11771 | ||
d3ce09f5 | 11772 | static int |
78eff0ec | 11773 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11774 | { |
4082afcc | 11775 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11776 | } |
11777 | ||
35b1e5cc | 11778 | static void |
ecae04e1 | 11779 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11780 | { |
11781 | putpkt ("QTinit"); | |
11782 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11783 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11784 | error (_("Target does not support this command.")); |
11785 | } | |
11786 | ||
11787 | static void free_actions_list (char **actions_list); | |
11788 | static void free_actions_list_cleanup_wrapper (void *); | |
11789 | static void | |
11790 | free_actions_list_cleanup_wrapper (void *al) | |
11791 | { | |
19ba03f4 | 11792 | free_actions_list ((char **) al); |
35b1e5cc SS |
11793 | } |
11794 | ||
11795 | static void | |
11796 | free_actions_list (char **actions_list) | |
11797 | { | |
11798 | int ndx; | |
11799 | ||
11800 | if (actions_list == 0) | |
11801 | return; | |
11802 | ||
11803 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11804 | xfree (actions_list[ndx]); | |
11805 | ||
11806 | xfree (actions_list); | |
11807 | } | |
11808 | ||
409873ef SS |
11809 | /* Recursive routine to walk through command list including loops, and |
11810 | download packets for each command. */ | |
11811 | ||
11812 | static void | |
11813 | remote_download_command_source (int num, ULONGEST addr, | |
11814 | struct command_line *cmds) | |
11815 | { | |
11816 | struct remote_state *rs = get_remote_state (); | |
11817 | struct command_line *cmd; | |
11818 | ||
11819 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11820 | { | |
0df8b418 | 11821 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11822 | strcpy (rs->buf, "QTDPsrc:"); |
11823 | encode_source_string (num, addr, "cmd", cmd->line, | |
11824 | rs->buf + strlen (rs->buf), | |
11825 | rs->buf_size - strlen (rs->buf)); | |
11826 | putpkt (rs->buf); | |
11827 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11828 | if (strcmp (target_buf, "OK")) | |
11829 | warning (_("Target does not support source download.")); | |
11830 | ||
11831 | if (cmd->control_type == while_control | |
11832 | || cmd->control_type == while_stepping_control) | |
11833 | { | |
11834 | remote_download_command_source (num, addr, *cmd->body_list); | |
11835 | ||
0df8b418 | 11836 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11837 | strcpy (rs->buf, "QTDPsrc:"); |
11838 | encode_source_string (num, addr, "cmd", "end", | |
11839 | rs->buf + strlen (rs->buf), | |
11840 | rs->buf_size - strlen (rs->buf)); | |
11841 | putpkt (rs->buf); | |
11842 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11843 | if (strcmp (target_buf, "OK")) | |
11844 | warning (_("Target does not support source download.")); | |
11845 | } | |
11846 | } | |
11847 | } | |
11848 | ||
35b1e5cc | 11849 | static void |
548f7808 | 11850 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11851 | { |
bba74b36 | 11852 | #define BUF_SIZE 2048 |
e8ba3115 | 11853 | |
35b1e5cc | 11854 | CORE_ADDR tpaddr; |
409873ef | 11855 | char addrbuf[40]; |
bba74b36 | 11856 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11857 | char **tdp_actions; |
11858 | char **stepping_actions; | |
11859 | int ndx; | |
11860 | struct cleanup *old_chain = NULL; | |
11861 | struct agent_expr *aexpr; | |
11862 | struct cleanup *aexpr_chain = NULL; | |
11863 | char *pkt; | |
e8ba3115 | 11864 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11865 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11866 | |
dc673c81 | 11867 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11868 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11869 | tdp_actions); | |
11870 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11871 | stepping_actions); | |
11872 | ||
11873 | tpaddr = loc->address; | |
11874 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11875 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11876 | addrbuf, /* address */ | |
11877 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11878 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11879 | /* Fast tracepoints are mostly handled by the target, but we can |
11880 | tell the target how big of an instruction block should be moved | |
11881 | around. */ | |
11882 | if (b->type == bp_fast_tracepoint) | |
11883 | { | |
11884 | /* Only test for support at download time; we may not know | |
11885 | target capabilities at definition time. */ | |
11886 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11887 | { |
6b940e6a PL |
11888 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11889 | NULL)) | |
bba74b36 | 11890 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11891 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11892 | else |
e8ba3115 YQ |
11893 | /* If it passed validation at definition but fails now, |
11894 | something is very wrong. */ | |
11895 | internal_error (__FILE__, __LINE__, | |
11896 | _("Fast tracepoint not " | |
11897 | "valid during download")); | |
35b1e5cc | 11898 | } |
e8ba3115 YQ |
11899 | else |
11900 | /* Fast tracepoints are functionally identical to regular | |
11901 | tracepoints, so don't take lack of support as a reason to | |
11902 | give up on the trace run. */ | |
11903 | warning (_("Target does not support fast tracepoints, " | |
11904 | "downloading %d as regular tracepoint"), b->number); | |
11905 | } | |
11906 | else if (b->type == bp_static_tracepoint) | |
11907 | { | |
11908 | /* Only test for support at download time; we may not know | |
11909 | target capabilities at definition time. */ | |
11910 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11911 | { |
e8ba3115 | 11912 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11913 | |
e8ba3115 YQ |
11914 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11915 | strcat (buf, ":S"); | |
0fb4aa4b | 11916 | else |
e8ba3115 | 11917 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11918 | } |
e8ba3115 YQ |
11919 | else |
11920 | /* Fast tracepoints are functionally identical to regular | |
11921 | tracepoints, so don't take lack of support as a reason | |
11922 | to give up on the trace run. */ | |
11923 | error (_("Target does not support static tracepoints")); | |
11924 | } | |
11925 | /* If the tracepoint has a conditional, make it into an agent | |
11926 | expression and append to the definition. */ | |
11927 | if (loc->cond) | |
11928 | { | |
11929 | /* Only test support at download time, we may not know target | |
11930 | capabilities at definition time. */ | |
11931 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11932 | { |
e8ba3115 YQ |
11933 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11934 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11935 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11936 | aexpr->len); | |
e8ba3115 YQ |
11937 | pkt = buf + strlen (buf); |
11938 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11939 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11940 | *pkt = '\0'; | |
11941 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11942 | } |
e8ba3115 YQ |
11943 | else |
11944 | warning (_("Target does not support conditional tracepoints, " | |
11945 | "ignoring tp %d cond"), b->number); | |
11946 | } | |
35b1e5cc | 11947 | |
d9b3f62e | 11948 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11949 | strcat (buf, "-"); |
11950 | putpkt (buf); | |
11951 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11952 | if (strcmp (target_buf, "OK")) | |
11953 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11954 | |
e8ba3115 YQ |
11955 | /* do_single_steps (t); */ |
11956 | if (tdp_actions) | |
11957 | { | |
11958 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11959 | { |
e8ba3115 | 11960 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11961 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11962 | b->number, addrbuf, /* address */ | |
11963 | tdp_actions[ndx], | |
11964 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11965 | ? '-' : 0)); | |
e8ba3115 YQ |
11966 | putpkt (buf); |
11967 | remote_get_noisy_reply (&target_buf, | |
11968 | &target_buf_size); | |
11969 | if (strcmp (target_buf, "OK")) | |
11970 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11971 | } |
e8ba3115 YQ |
11972 | } |
11973 | if (stepping_actions) | |
11974 | { | |
11975 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 11976 | { |
e8ba3115 | 11977 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11978 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
11979 | b->number, addrbuf, /* address */ | |
11980 | ((ndx == 0) ? "S" : ""), | |
11981 | stepping_actions[ndx], | |
11982 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
11983 | putpkt (buf); |
11984 | remote_get_noisy_reply (&target_buf, | |
11985 | &target_buf_size); | |
11986 | if (strcmp (target_buf, "OK")) | |
11987 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11988 | } |
e8ba3115 | 11989 | } |
409873ef | 11990 | |
4082afcc | 11991 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 11992 | { |
f00aae0f | 11993 | if (b->location != NULL) |
409873ef | 11994 | { |
e8ba3115 | 11995 | strcpy (buf, "QTDPsrc:"); |
f00aae0f KS |
11996 | encode_source_string (b->number, loc->address, "at", |
11997 | event_location_to_string (b->location), | |
11998 | buf + strlen (buf), 2048 - strlen (buf)); | |
e8ba3115 YQ |
11999 | putpkt (buf); |
12000 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12001 | if (strcmp (target_buf, "OK")) | |
12002 | warning (_("Target does not support source download.")); | |
409873ef | 12003 | } |
e8ba3115 YQ |
12004 | if (b->cond_string) |
12005 | { | |
12006 | strcpy (buf, "QTDPsrc:"); | |
12007 | encode_source_string (b->number, loc->address, | |
12008 | "cond", b->cond_string, buf + strlen (buf), | |
12009 | 2048 - strlen (buf)); | |
12010 | putpkt (buf); | |
12011 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12012 | if (strcmp (target_buf, "OK")) | |
12013 | warning (_("Target does not support source download.")); | |
12014 | } | |
12015 | remote_download_command_source (b->number, loc->address, | |
12016 | breakpoint_commands (b)); | |
35b1e5cc | 12017 | } |
e8ba3115 YQ |
12018 | |
12019 | do_cleanups (old_chain); | |
35b1e5cc SS |
12020 | } |
12021 | ||
1e4d1764 | 12022 | static int |
a52a8357 | 12023 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12024 | { |
1e51243a PA |
12025 | struct remote_state *rs = get_remote_state (); |
12026 | struct trace_status *ts; | |
12027 | int status; | |
12028 | ||
12029 | /* Don't try to install tracepoints until we've relocated our | |
12030 | symbols, and fetched and merged the target's tracepoint list with | |
12031 | ours. */ | |
12032 | if (rs->starting_up) | |
12033 | return 0; | |
12034 | ||
12035 | ts = current_trace_status (); | |
8bd200f1 | 12036 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12037 | |
12038 | if (status == -1 || !ts->running_known || !ts->running) | |
12039 | return 0; | |
12040 | ||
12041 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12042 | installing tracepoint in trace, we have to return. */ | |
12043 | if (!remote_supports_install_in_trace ()) | |
12044 | return 0; | |
12045 | ||
12046 | return 1; | |
12047 | } | |
12048 | ||
12049 | ||
35b1e5cc | 12050 | static void |
559d2b81 TT |
12051 | remote_download_trace_state_variable (struct target_ops *self, |
12052 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
12053 | { |
12054 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12055 | char *p; |
35b1e5cc | 12056 | |
bba74b36 YQ |
12057 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
12058 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
12059 | tsv->builtin); | |
00bf0b85 SS |
12060 | p = rs->buf + strlen (rs->buf); |
12061 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
12062 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 12063 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 12064 | *p++ = '\0'; |
35b1e5cc SS |
12065 | putpkt (rs->buf); |
12066 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12067 | if (*target_buf == '\0') |
12068 | error (_("Target does not support this command.")); | |
12069 | if (strcmp (target_buf, "OK") != 0) | |
12070 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
12071 | } |
12072 | ||
d248b706 | 12073 | static void |
46670d57 TT |
12074 | remote_enable_tracepoint (struct target_ops *self, |
12075 | struct bp_location *location) | |
d248b706 KY |
12076 | { |
12077 | struct remote_state *rs = get_remote_state (); | |
12078 | char addr_buf[40]; | |
12079 | ||
12080 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12081 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12082 | location->owner->number, addr_buf); | |
d248b706 KY |
12083 | putpkt (rs->buf); |
12084 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12085 | if (*rs->buf == '\0') | |
12086 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12087 | if (strcmp (rs->buf, "OK") != 0) | |
12088 | error (_("Error on target while enabling tracepoint.")); | |
12089 | } | |
12090 | ||
12091 | static void | |
780b049c TT |
12092 | remote_disable_tracepoint (struct target_ops *self, |
12093 | struct bp_location *location) | |
d248b706 KY |
12094 | { |
12095 | struct remote_state *rs = get_remote_state (); | |
12096 | char addr_buf[40]; | |
12097 | ||
12098 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12099 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12100 | location->owner->number, addr_buf); | |
d248b706 KY |
12101 | putpkt (rs->buf); |
12102 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12103 | if (*rs->buf == '\0') | |
12104 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12105 | if (strcmp (rs->buf, "OK") != 0) | |
12106 | error (_("Error on target while disabling tracepoint.")); | |
12107 | } | |
12108 | ||
35b1e5cc | 12109 | static void |
583f9a86 | 12110 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12111 | { |
12112 | asection *s; | |
81b9b86e | 12113 | bfd *abfd = NULL; |
35b1e5cc | 12114 | bfd_size_type size; |
608bcef2 | 12115 | bfd_vma vma; |
35b1e5cc | 12116 | int anysecs = 0; |
c2fa21f1 | 12117 | int offset = 0; |
35b1e5cc SS |
12118 | |
12119 | if (!exec_bfd) | |
12120 | return; /* No information to give. */ | |
12121 | ||
12122 | strcpy (target_buf, "QTro"); | |
9779ab84 | 12123 | offset = strlen (target_buf); |
35b1e5cc SS |
12124 | for (s = exec_bfd->sections; s; s = s->next) |
12125 | { | |
12126 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12127 | int sec_length; |
35b1e5cc SS |
12128 | |
12129 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12130 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12131 | (s->flags & SEC_READONLY) == 0) |
12132 | continue; | |
12133 | ||
12134 | anysecs = 1; | |
81b9b86e | 12135 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12136 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12137 | sprintf_vma (tmp1, vma); |
12138 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
12139 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
12140 | if (offset + sec_length + 1 > target_buf_size) | |
12141 | { | |
4082afcc | 12142 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12143 | warning (_("\ |
c2fa21f1 HZ |
12144 | Too many sections for read-only sections definition packet.")); |
12145 | break; | |
12146 | } | |
bba74b36 YQ |
12147 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
12148 | tmp1, tmp2); | |
c2fa21f1 | 12149 | offset += sec_length; |
35b1e5cc SS |
12150 | } |
12151 | if (anysecs) | |
12152 | { | |
12153 | putpkt (target_buf); | |
12154 | getpkt (&target_buf, &target_buf_size, 0); | |
12155 | } | |
12156 | } | |
12157 | ||
12158 | static void | |
e2d1aae3 | 12159 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
12160 | { |
12161 | putpkt ("QTStart"); | |
12162 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12163 | if (*target_buf == '\0') |
12164 | error (_("Target does not support this command.")); | |
12165 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12166 | error (_("Bogus reply from target: %s"), target_buf); |
12167 | } | |
12168 | ||
12169 | static int | |
8bd200f1 | 12170 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12171 | { |
953b98d1 | 12172 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12173 | char *p = NULL; |
0df8b418 | 12174 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12175 | extern int trace_regblock_size; |
bd3eecc3 PA |
12176 | enum packet_result result; |
12177 | ||
4082afcc | 12178 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12179 | return -1; |
a744cf53 | 12180 | |
00bf0b85 SS |
12181 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
12182 | ||
049dc89b JK |
12183 | putpkt ("qTStatus"); |
12184 | ||
492d29ea | 12185 | TRY |
67f41397 JK |
12186 | { |
12187 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12188 | } | |
492d29ea | 12189 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12190 | { |
598d3636 JK |
12191 | if (ex.error != TARGET_CLOSE_ERROR) |
12192 | { | |
12193 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12194 | return -1; | |
12195 | } | |
12196 | throw_exception (ex); | |
67f41397 | 12197 | } |
492d29ea | 12198 | END_CATCH |
00bf0b85 | 12199 | |
bd3eecc3 PA |
12200 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12201 | ||
00bf0b85 | 12202 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12203 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12204 | return -1; |
35b1e5cc | 12205 | |
00bf0b85 | 12206 | /* We're working with a live target. */ |
f5911ea1 | 12207 | ts->filename = NULL; |
00bf0b85 | 12208 | |
00bf0b85 | 12209 | if (*p++ != 'T') |
35b1e5cc SS |
12210 | error (_("Bogus trace status reply from target: %s"), target_buf); |
12211 | ||
84cebc4a YQ |
12212 | /* Function 'parse_trace_status' sets default value of each field of |
12213 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12214 | parse_trace_status (p, ts); |
12215 | ||
12216 | return ts->running; | |
35b1e5cc SS |
12217 | } |
12218 | ||
70221824 | 12219 | static void |
db90e85c | 12220 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12221 | struct uploaded_tp *utp) |
12222 | { | |
12223 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12224 | char *reply; |
12225 | struct bp_location *loc; | |
12226 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12227 | size_t size = get_remote_packet_size (); |
f196051f SS |
12228 | |
12229 | if (tp) | |
12230 | { | |
12231 | tp->base.hit_count = 0; | |
12232 | tp->traceframe_usage = 0; | |
12233 | for (loc = tp->base.loc; loc; loc = loc->next) | |
12234 | { | |
12235 | /* If the tracepoint was never downloaded, don't go asking for | |
12236 | any status. */ | |
12237 | if (tp->number_on_target == 0) | |
12238 | continue; | |
bba74b36 YQ |
12239 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12240 | phex_nz (loc->address, 0)); | |
f196051f SS |
12241 | putpkt (rs->buf); |
12242 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12243 | if (reply && *reply) | |
12244 | { | |
12245 | if (*reply == 'V') | |
12246 | parse_tracepoint_status (reply + 1, bp, utp); | |
12247 | } | |
12248 | } | |
12249 | } | |
12250 | else if (utp) | |
12251 | { | |
12252 | utp->hit_count = 0; | |
12253 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12254 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12255 | phex_nz (utp->addr, 0)); | |
f196051f SS |
12256 | putpkt (rs->buf); |
12257 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12258 | if (reply && *reply) | |
12259 | { | |
12260 | if (*reply == 'V') | |
12261 | parse_tracepoint_status (reply + 1, bp, utp); | |
12262 | } | |
12263 | } | |
12264 | } | |
12265 | ||
35b1e5cc | 12266 | static void |
74499f1b | 12267 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
12268 | { |
12269 | putpkt ("QTStop"); | |
12270 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12271 | if (*target_buf == '\0') |
12272 | error (_("Target does not support this command.")); | |
12273 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12274 | error (_("Bogus reply from target: %s"), target_buf); |
12275 | } | |
12276 | ||
12277 | static int | |
bd4c6793 TT |
12278 | remote_trace_find (struct target_ops *self, |
12279 | enum trace_find_type type, int num, | |
cc5925ad | 12280 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12281 | int *tpp) |
12282 | { | |
12283 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12284 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12285 | char *p, *reply; |
12286 | int target_frameno = -1, target_tracept = -1; | |
12287 | ||
e6e4e701 PA |
12288 | /* Lookups other than by absolute frame number depend on the current |
12289 | trace selected, so make sure it is correct on the remote end | |
12290 | first. */ | |
12291 | if (type != tfind_number) | |
12292 | set_remote_traceframe (); | |
12293 | ||
35b1e5cc SS |
12294 | p = rs->buf; |
12295 | strcpy (p, "QTFrame:"); | |
12296 | p = strchr (p, '\0'); | |
12297 | switch (type) | |
12298 | { | |
12299 | case tfind_number: | |
bba74b36 | 12300 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12301 | break; |
12302 | case tfind_pc: | |
bba74b36 | 12303 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12304 | break; |
12305 | case tfind_tp: | |
bba74b36 | 12306 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12307 | break; |
12308 | case tfind_range: | |
bba74b36 YQ |
12309 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12310 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12311 | break; |
12312 | case tfind_outside: | |
bba74b36 YQ |
12313 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12314 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12315 | break; |
12316 | default: | |
9b20d036 | 12317 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12318 | } |
12319 | ||
12320 | putpkt (rs->buf); | |
2f65bcb7 | 12321 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
12322 | if (*reply == '\0') |
12323 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12324 | |
12325 | while (reply && *reply) | |
12326 | switch (*reply) | |
12327 | { | |
12328 | case 'F': | |
f197e0f1 VP |
12329 | p = ++reply; |
12330 | target_frameno = (int) strtol (p, &reply, 16); | |
12331 | if (reply == p) | |
12332 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12333 | /* Don't update our remote traceframe number cache on failure |
12334 | to select a remote traceframe. */ | |
f197e0f1 VP |
12335 | if (target_frameno == -1) |
12336 | return -1; | |
35b1e5cc SS |
12337 | break; |
12338 | case 'T': | |
f197e0f1 VP |
12339 | p = ++reply; |
12340 | target_tracept = (int) strtol (p, &reply, 16); | |
12341 | if (reply == p) | |
12342 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12343 | break; |
12344 | case 'O': /* "OK"? */ | |
12345 | if (reply[1] == 'K' && reply[2] == '\0') | |
12346 | reply += 2; | |
12347 | else | |
12348 | error (_("Bogus reply from target: %s"), reply); | |
12349 | break; | |
12350 | default: | |
12351 | error (_("Bogus reply from target: %s"), reply); | |
12352 | } | |
12353 | if (tpp) | |
12354 | *tpp = target_tracept; | |
e6e4e701 | 12355 | |
262e1174 | 12356 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12357 | return target_frameno; |
12358 | } | |
12359 | ||
12360 | static int | |
4011015b TT |
12361 | remote_get_trace_state_variable_value (struct target_ops *self, |
12362 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12363 | { |
12364 | struct remote_state *rs = get_remote_state (); | |
12365 | char *reply; | |
12366 | ULONGEST uval; | |
12367 | ||
e6e4e701 PA |
12368 | set_remote_traceframe (); |
12369 | ||
bba74b36 | 12370 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12371 | putpkt (rs->buf); |
12372 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12373 | if (reply && *reply) | |
12374 | { | |
12375 | if (*reply == 'V') | |
12376 | { | |
12377 | unpack_varlen_hex (reply + 1, &uval); | |
12378 | *val = (LONGEST) uval; | |
12379 | return 1; | |
12380 | } | |
12381 | } | |
12382 | return 0; | |
12383 | } | |
12384 | ||
00bf0b85 | 12385 | static int |
dc3decaf | 12386 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12387 | { |
12388 | struct remote_state *rs = get_remote_state (); | |
12389 | char *p, *reply; | |
12390 | ||
12391 | p = rs->buf; | |
12392 | strcpy (p, "QTSave:"); | |
12393 | p += strlen (p); | |
12394 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12395 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12396 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12397 | *p++ = '\0'; |
12398 | putpkt (rs->buf); | |
ad91cd99 | 12399 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12400 | if (*reply == '\0') |
ad91cd99 PA |
12401 | error (_("Target does not support this command.")); |
12402 | if (strcmp (reply, "OK") != 0) | |
12403 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12404 | return 0; |
12405 | } | |
12406 | ||
12407 | /* This is basically a memory transfer, but needs to be its own packet | |
12408 | because we don't know how the target actually organizes its trace | |
12409 | memory, plus we want to be able to ask for as much as possible, but | |
12410 | not be unhappy if we don't get as much as we ask for. */ | |
12411 | ||
12412 | static LONGEST | |
88ee6f45 TT |
12413 | remote_get_raw_trace_data (struct target_ops *self, |
12414 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12415 | { |
12416 | struct remote_state *rs = get_remote_state (); | |
12417 | char *reply; | |
12418 | char *p; | |
12419 | int rslt; | |
12420 | ||
12421 | p = rs->buf; | |
12422 | strcpy (p, "qTBuffer:"); | |
12423 | p += strlen (p); | |
12424 | p += hexnumstr (p, offset); | |
12425 | *p++ = ','; | |
12426 | p += hexnumstr (p, len); | |
12427 | *p++ = '\0'; | |
12428 | ||
12429 | putpkt (rs->buf); | |
12430 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12431 | if (reply && *reply) | |
12432 | { | |
12433 | /* 'l' by itself means we're at the end of the buffer and | |
12434 | there is nothing more to get. */ | |
12435 | if (*reply == 'l') | |
12436 | return 0; | |
12437 | ||
12438 | /* Convert the reply into binary. Limit the number of bytes to | |
12439 | convert according to our passed-in buffer size, rather than | |
12440 | what was returned in the packet; if the target is | |
12441 | unexpectedly generous and gives us a bigger reply than we | |
12442 | asked for, we don't want to crash. */ | |
12443 | rslt = hex2bin (target_buf, buf, len); | |
12444 | return rslt; | |
12445 | } | |
12446 | ||
12447 | /* Something went wrong, flag as an error. */ | |
12448 | return -1; | |
12449 | } | |
12450 | ||
35b1e5cc | 12451 | static void |
37b25738 | 12452 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12453 | { |
12454 | struct remote_state *rs = get_remote_state (); | |
12455 | ||
4082afcc | 12456 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12457 | { |
ad91cd99 PA |
12458 | char *reply; |
12459 | ||
bba74b36 | 12460 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12461 | putpkt (rs->buf); |
ad91cd99 PA |
12462 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12463 | if (*reply == '\0') | |
33da3f1c | 12464 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12465 | if (strcmp (reply, "OK") != 0) |
12466 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12467 | } |
12468 | else if (val) | |
12469 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12470 | } |
12471 | ||
dc146f7c VP |
12472 | static int |
12473 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12474 | { | |
12475 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12476 | |
fe978cb0 PA |
12477 | if (info && info->priv) |
12478 | return info->priv->core; | |
dc146f7c VP |
12479 | return -1; |
12480 | } | |
12481 | ||
4daf5ac0 | 12482 | static void |
736d5b1f | 12483 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12484 | { |
12485 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12486 | char *reply; |
4daf5ac0 | 12487 | |
bba74b36 | 12488 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12489 | putpkt (rs->buf); |
ad91cd99 PA |
12490 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12491 | if (*reply == '\0') | |
4daf5ac0 | 12492 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12493 | if (strcmp (reply, "OK") != 0) |
12494 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12495 | } |
12496 | ||
b3b9301e | 12497 | static struct traceframe_info * |
a893e81f | 12498 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12499 | { |
12500 | char *text; | |
12501 | ||
12502 | text = target_read_stralloc (¤t_target, | |
12503 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12504 | if (text != NULL) | |
12505 | { | |
12506 | struct traceframe_info *info; | |
12507 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12508 | ||
12509 | info = parse_traceframe_info (text); | |
12510 | do_cleanups (back_to); | |
12511 | return info; | |
12512 | } | |
12513 | ||
12514 | return NULL; | |
12515 | } | |
12516 | ||
405f8e94 SS |
12517 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12518 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12519 | if the packet is not supported, and 0 if the minimum instruction | |
12520 | length is unknown. */ | |
12521 | ||
12522 | static int | |
0e67620a | 12523 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12524 | { |
12525 | struct remote_state *rs = get_remote_state (); | |
12526 | char *reply; | |
12527 | ||
e886a173 PA |
12528 | /* If we're not debugging a process yet, the IPA can't be |
12529 | loaded. */ | |
12530 | if (!target_has_execution) | |
12531 | return 0; | |
12532 | ||
12533 | /* Make sure the remote is pointing at the right process. */ | |
12534 | set_general_process (); | |
12535 | ||
bba74b36 | 12536 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12537 | putpkt (rs->buf); |
12538 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12539 | if (*reply == '\0') | |
12540 | return -1; | |
12541 | else | |
12542 | { | |
12543 | ULONGEST min_insn_len; | |
12544 | ||
12545 | unpack_varlen_hex (reply, &min_insn_len); | |
12546 | ||
12547 | return (int) min_insn_len; | |
12548 | } | |
12549 | } | |
12550 | ||
f6f899bf | 12551 | static void |
4da384be | 12552 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12553 | { |
4082afcc | 12554 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12555 | { |
12556 | struct remote_state *rs = get_remote_state (); | |
12557 | char *buf = rs->buf; | |
12558 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12559 | enum packet_result result; | |
12560 | ||
12561 | gdb_assert (val >= 0 || val == -1); | |
12562 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12563 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12564 | if (val < 0) | |
12565 | { | |
12566 | *buf++ = '-'; | |
12567 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12568 | } | |
12569 | else | |
12570 | buf += hexnumstr (buf, (ULONGEST) val); | |
12571 | ||
12572 | putpkt (rs->buf); | |
12573 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12574 | result = packet_ok (rs->buf, | |
12575 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12576 | ||
12577 | if (result != PACKET_OK) | |
12578 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12579 | } | |
12580 | } | |
12581 | ||
f196051f | 12582 | static int |
d9e68a2c TT |
12583 | remote_set_trace_notes (struct target_ops *self, |
12584 | const char *user, const char *notes, | |
ca623f82 | 12585 | const char *stop_notes) |
f196051f SS |
12586 | { |
12587 | struct remote_state *rs = get_remote_state (); | |
12588 | char *reply; | |
12589 | char *buf = rs->buf; | |
12590 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12591 | int nbytes; | |
12592 | ||
12593 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12594 | if (user) | |
12595 | { | |
12596 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 12597 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
12598 | buf += 2 * nbytes; |
12599 | *buf++ = ';'; | |
12600 | } | |
12601 | if (notes) | |
12602 | { | |
12603 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 12604 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
12605 | buf += 2 * nbytes; |
12606 | *buf++ = ';'; | |
12607 | } | |
12608 | if (stop_notes) | |
12609 | { | |
12610 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 12611 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
12612 | buf += 2 * nbytes; |
12613 | *buf++ = ';'; | |
12614 | } | |
12615 | /* Ensure the buffer is terminated. */ | |
12616 | *buf = '\0'; | |
12617 | ||
12618 | putpkt (rs->buf); | |
12619 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12620 | if (*reply == '\0') | |
12621 | return 0; | |
12622 | ||
12623 | if (strcmp (reply, "OK") != 0) | |
12624 | error (_("Bogus reply from target: %s"), reply); | |
12625 | ||
12626 | return 1; | |
12627 | } | |
12628 | ||
d1feda86 | 12629 | static int |
2c152180 | 12630 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 12631 | { |
4082afcc | 12632 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
12633 | { |
12634 | struct remote_state *rs = get_remote_state (); | |
12635 | ||
12636 | /* If the stub supports QAgent. */ | |
bba74b36 | 12637 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
12638 | putpkt (rs->buf); |
12639 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12640 | ||
12641 | if (strcmp (rs->buf, "OK") == 0) | |
12642 | { | |
12643 | use_agent = use; | |
12644 | return 1; | |
12645 | } | |
12646 | } | |
12647 | ||
12648 | return 0; | |
12649 | } | |
12650 | ||
12651 | static int | |
fe38f897 | 12652 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 12653 | { |
4082afcc | 12654 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
12655 | } |
12656 | ||
9accd112 MM |
12657 | struct btrace_target_info |
12658 | { | |
12659 | /* The ptid of the traced thread. */ | |
12660 | ptid_t ptid; | |
f4abbc16 MM |
12661 | |
12662 | /* The obtained branch trace configuration. */ | |
12663 | struct btrace_config conf; | |
9accd112 MM |
12664 | }; |
12665 | ||
f4abbc16 MM |
12666 | /* Reset our idea of our target's btrace configuration. */ |
12667 | ||
12668 | static void | |
12669 | remote_btrace_reset (void) | |
12670 | { | |
12671 | struct remote_state *rs = get_remote_state (); | |
12672 | ||
12673 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
12674 | } | |
12675 | ||
9accd112 MM |
12676 | /* Check whether the target supports branch tracing. */ |
12677 | ||
12678 | static int | |
043c3577 | 12679 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 12680 | { |
4082afcc | 12681 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 12682 | return 0; |
4082afcc | 12683 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
12684 | return 0; |
12685 | ||
043c3577 MM |
12686 | switch (format) |
12687 | { | |
12688 | case BTRACE_FORMAT_NONE: | |
12689 | return 0; | |
12690 | ||
12691 | case BTRACE_FORMAT_BTS: | |
12692 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
12693 | |
12694 | case BTRACE_FORMAT_PT: | |
12695 | /* The trace is decoded on the host. Even if our target supports it, | |
12696 | we still need to have libipt to decode the trace. */ | |
12697 | #if defined (HAVE_LIBIPT) | |
12698 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
12699 | #else /* !defined (HAVE_LIBIPT) */ | |
12700 | return 0; | |
12701 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
12702 | } |
12703 | ||
12704 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
12705 | } |
12706 | ||
f4abbc16 MM |
12707 | /* Synchronize the configuration with the target. */ |
12708 | ||
12709 | static void | |
12710 | btrace_sync_conf (const struct btrace_config *conf) | |
12711 | { | |
d33501a5 MM |
12712 | struct packet_config *packet; |
12713 | struct remote_state *rs; | |
12714 | char *buf, *pos, *endbuf; | |
12715 | ||
12716 | rs = get_remote_state (); | |
12717 | buf = rs->buf; | |
12718 | endbuf = buf + get_remote_packet_size (); | |
12719 | ||
12720 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
12721 | if (packet_config_support (packet) == PACKET_ENABLE | |
12722 | && conf->bts.size != rs->btrace_config.bts.size) | |
12723 | { | |
12724 | pos = buf; | |
12725 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12726 | conf->bts.size); | |
12727 | ||
12728 | putpkt (buf); | |
12729 | getpkt (&buf, &rs->buf_size, 0); | |
12730 | ||
12731 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12732 | { | |
12733 | if (buf[0] == 'E' && buf[1] == '.') | |
12734 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12735 | else | |
12736 | error (_("Failed to configure the BTS buffer size.")); | |
12737 | } | |
12738 | ||
12739 | rs->btrace_config.bts.size = conf->bts.size; | |
12740 | } | |
b20a6524 MM |
12741 | |
12742 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12743 | if (packet_config_support (packet) == PACKET_ENABLE | |
12744 | && conf->pt.size != rs->btrace_config.pt.size) | |
12745 | { | |
12746 | pos = buf; | |
12747 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12748 | conf->pt.size); | |
12749 | ||
12750 | putpkt (buf); | |
12751 | getpkt (&buf, &rs->buf_size, 0); | |
12752 | ||
12753 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12754 | { | |
12755 | if (buf[0] == 'E' && buf[1] == '.') | |
12756 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12757 | else | |
12758 | error (_("Failed to configure the trace buffer size.")); | |
12759 | } | |
12760 | ||
12761 | rs->btrace_config.pt.size = conf->pt.size; | |
12762 | } | |
f4abbc16 MM |
12763 | } |
12764 | ||
12765 | /* Read the current thread's btrace configuration from the target and | |
12766 | store it into CONF. */ | |
12767 | ||
12768 | static void | |
12769 | btrace_read_config (struct btrace_config *conf) | |
12770 | { | |
12771 | char *xml; | |
12772 | ||
12773 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12774 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12775 | if (xml != NULL) |
12776 | { | |
12777 | struct cleanup *cleanup; | |
12778 | ||
12779 | cleanup = make_cleanup (xfree, xml); | |
12780 | parse_xml_btrace_conf (conf, xml); | |
12781 | do_cleanups (cleanup); | |
12782 | } | |
12783 | } | |
12784 | ||
c0272db5 TW |
12785 | /* Maybe reopen target btrace. */ |
12786 | ||
12787 | static void | |
12788 | remote_btrace_maybe_reopen (void) | |
12789 | { | |
12790 | struct remote_state *rs = get_remote_state (); | |
12791 | struct cleanup *cleanup; | |
12792 | struct thread_info *tp; | |
12793 | int btrace_target_pushed = 0; | |
12794 | int warned = 0; | |
12795 | ||
12796 | cleanup = make_cleanup_restore_current_thread (); | |
12797 | ALL_NON_EXITED_THREADS (tp) | |
12798 | { | |
12799 | set_general_thread (tp->ptid); | |
12800 | ||
12801 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
12802 | btrace_read_config (&rs->btrace_config); | |
12803 | ||
12804 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
12805 | continue; | |
12806 | ||
12807 | #if !defined (HAVE_LIBIPT) | |
12808 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
12809 | { | |
12810 | if (!warned) | |
12811 | { | |
12812 | warned = 1; | |
12813 | warning (_("GDB does not support Intel Processor Trace. " | |
12814 | "\"record\" will not work in this session.")); | |
12815 | } | |
12816 | ||
12817 | continue; | |
12818 | } | |
12819 | #endif /* !defined (HAVE_LIBIPT) */ | |
12820 | ||
12821 | /* Push target, once, but before anything else happens. This way our | |
12822 | changes to the threads will be cleaned up by unpushing the target | |
12823 | in case btrace_read_config () throws. */ | |
12824 | if (!btrace_target_pushed) | |
12825 | { | |
12826 | btrace_target_pushed = 1; | |
12827 | record_btrace_push_target (); | |
12828 | printf_filtered (_("Target is recording using %s.\n"), | |
12829 | btrace_format_string (rs->btrace_config.format)); | |
12830 | } | |
12831 | ||
12832 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
12833 | tp->btrace.target->ptid = tp->ptid; | |
12834 | tp->btrace.target->conf = rs->btrace_config; | |
12835 | } | |
12836 | do_cleanups (cleanup); | |
12837 | } | |
12838 | ||
9accd112 MM |
12839 | /* Enable branch tracing. */ |
12840 | ||
12841 | static struct btrace_target_info * | |
f4abbc16 MM |
12842 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12843 | const struct btrace_config *conf) | |
9accd112 MM |
12844 | { |
12845 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12846 | struct packet_config *packet = NULL; |
9accd112 MM |
12847 | struct remote_state *rs = get_remote_state (); |
12848 | char *buf = rs->buf; | |
12849 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12850 | ||
b20a6524 MM |
12851 | switch (conf->format) |
12852 | { | |
12853 | case BTRACE_FORMAT_BTS: | |
12854 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12855 | break; | |
12856 | ||
12857 | case BTRACE_FORMAT_PT: | |
12858 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12859 | break; | |
12860 | } | |
12861 | ||
12862 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12863 | error (_("Target does not support branch tracing.")); |
12864 | ||
f4abbc16 MM |
12865 | btrace_sync_conf (conf); |
12866 | ||
9accd112 MM |
12867 | set_general_thread (ptid); |
12868 | ||
12869 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12870 | putpkt (rs->buf); | |
12871 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12872 | ||
12873 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12874 | { | |
12875 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12876 | error (_("Could not enable branch tracing for %s: %s"), | |
12877 | target_pid_to_str (ptid), rs->buf + 2); | |
12878 | else | |
12879 | error (_("Could not enable branch tracing for %s."), | |
12880 | target_pid_to_str (ptid)); | |
12881 | } | |
12882 | ||
8d749320 | 12883 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
12884 | tinfo->ptid = ptid; |
12885 | ||
f4abbc16 MM |
12886 | /* If we fail to read the configuration, we lose some information, but the |
12887 | tracing itself is not impacted. */ | |
492d29ea PA |
12888 | TRY |
12889 | { | |
12890 | btrace_read_config (&tinfo->conf); | |
12891 | } | |
12892 | CATCH (err, RETURN_MASK_ERROR) | |
12893 | { | |
12894 | if (err.message != NULL) | |
12895 | warning ("%s", err.message); | |
12896 | } | |
12897 | END_CATCH | |
f4abbc16 | 12898 | |
9accd112 MM |
12899 | return tinfo; |
12900 | } | |
12901 | ||
12902 | /* Disable branch tracing. */ | |
12903 | ||
12904 | static void | |
25e95349 TT |
12905 | remote_disable_btrace (struct target_ops *self, |
12906 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12907 | { |
12908 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12909 | struct remote_state *rs = get_remote_state (); | |
12910 | char *buf = rs->buf; | |
12911 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12912 | ||
4082afcc | 12913 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12914 | error (_("Target does not support branch tracing.")); |
12915 | ||
12916 | set_general_thread (tinfo->ptid); | |
12917 | ||
12918 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12919 | putpkt (rs->buf); | |
12920 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12921 | ||
12922 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12923 | { | |
12924 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12925 | error (_("Could not disable branch tracing for %s: %s"), | |
12926 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12927 | else | |
12928 | error (_("Could not disable branch tracing for %s."), | |
12929 | target_pid_to_str (tinfo->ptid)); | |
12930 | } | |
12931 | ||
12932 | xfree (tinfo); | |
12933 | } | |
12934 | ||
12935 | /* Teardown branch tracing. */ | |
12936 | ||
12937 | static void | |
1777056d TT |
12938 | remote_teardown_btrace (struct target_ops *self, |
12939 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12940 | { |
12941 | /* We must not talk to the target during teardown. */ | |
12942 | xfree (tinfo); | |
12943 | } | |
12944 | ||
12945 | /* Read the branch trace. */ | |
12946 | ||
969c39fb | 12947 | static enum btrace_error |
39c49f83 | 12948 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12949 | struct btrace_data *btrace, |
969c39fb | 12950 | struct btrace_target_info *tinfo, |
9accd112 MM |
12951 | enum btrace_read_type type) |
12952 | { | |
12953 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
969c39fb | 12954 | struct cleanup *cleanup; |
9accd112 MM |
12955 | const char *annex; |
12956 | char *xml; | |
12957 | ||
4082afcc | 12958 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12959 | error (_("Target does not support branch tracing.")); |
12960 | ||
12961 | #if !defined(HAVE_LIBEXPAT) | |
12962 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12963 | #endif | |
12964 | ||
12965 | switch (type) | |
12966 | { | |
864089d2 | 12967 | case BTRACE_READ_ALL: |
9accd112 MM |
12968 | annex = "all"; |
12969 | break; | |
864089d2 | 12970 | case BTRACE_READ_NEW: |
9accd112 MM |
12971 | annex = "new"; |
12972 | break; | |
969c39fb MM |
12973 | case BTRACE_READ_DELTA: |
12974 | annex = "delta"; | |
12975 | break; | |
9accd112 MM |
12976 | default: |
12977 | internal_error (__FILE__, __LINE__, | |
12978 | _("Bad branch tracing read type: %u."), | |
12979 | (unsigned int) type); | |
12980 | } | |
12981 | ||
12982 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12983 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12984 | if (xml == NULL) |
12985 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12986 | |
969c39fb | 12987 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12988 | parse_xml_btrace (btrace, xml); |
969c39fb | 12989 | do_cleanups (cleanup); |
9accd112 | 12990 | |
969c39fb | 12991 | return BTRACE_ERR_NONE; |
9accd112 MM |
12992 | } |
12993 | ||
f4abbc16 MM |
12994 | static const struct btrace_config * |
12995 | remote_btrace_conf (struct target_ops *self, | |
12996 | const struct btrace_target_info *tinfo) | |
12997 | { | |
12998 | return &tinfo->conf; | |
12999 | } | |
13000 | ||
ced63ec0 | 13001 | static int |
5436ff03 | 13002 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 13003 | { |
4082afcc PA |
13004 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13005 | == PACKET_ENABLE); | |
ced63ec0 GB |
13006 | } |
13007 | ||
9dd130a0 TT |
13008 | /* Implementation of to_load. */ |
13009 | ||
13010 | static void | |
9cbe5fff | 13011 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
13012 | { |
13013 | generic_load (name, from_tty); | |
13014 | } | |
13015 | ||
c78fa86a GB |
13016 | /* Accepts an integer PID; returns a string representing a file that |
13017 | can be opened on the remote side to get the symbols for the child | |
13018 | process. Returns NULL if the operation is not supported. */ | |
13019 | ||
13020 | static char * | |
13021 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
13022 | { | |
13023 | static char *filename = NULL; | |
835205d0 GB |
13024 | struct inferior *inf; |
13025 | char *annex = NULL; | |
c78fa86a GB |
13026 | |
13027 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13028 | return NULL; | |
13029 | ||
13030 | if (filename != NULL) | |
13031 | xfree (filename); | |
13032 | ||
835205d0 GB |
13033 | inf = find_inferior_pid (pid); |
13034 | if (inf == NULL) | |
13035 | internal_error (__FILE__, __LINE__, | |
13036 | _("not currently attached to process %d"), pid); | |
13037 | ||
13038 | if (!inf->fake_pid_p) | |
13039 | { | |
13040 | const int annex_size = 9; | |
13041 | ||
224c3ddb | 13042 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13043 | xsnprintf (annex, annex_size, "%x", pid); |
13044 | } | |
13045 | ||
c78fa86a GB |
13046 | filename = target_read_stralloc (¤t_target, |
13047 | TARGET_OBJECT_EXEC_FILE, annex); | |
13048 | ||
13049 | return filename; | |
13050 | } | |
13051 | ||
750ce8d1 YQ |
13052 | /* Implement the to_can_do_single_step target_ops method. */ |
13053 | ||
13054 | static int | |
13055 | remote_can_do_single_step (struct target_ops *ops) | |
13056 | { | |
13057 | /* We can only tell whether target supports single step or not by | |
13058 | supported s and S vCont actions if the stub supports vContSupported | |
13059 | feature. If the stub doesn't support vContSupported feature, | |
13060 | we have conservatively to think target doesn't supports single | |
13061 | step. */ | |
13062 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13063 | { | |
13064 | struct remote_state *rs = get_remote_state (); | |
13065 | ||
13066 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13067 | remote_vcont_probe (rs); | |
13068 | ||
13069 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13070 | } | |
13071 | else | |
13072 | return 0; | |
13073 | } | |
13074 | ||
3a00c802 PA |
13075 | /* Implementation of the to_execution_direction method for the remote |
13076 | target. */ | |
13077 | ||
13078 | static enum exec_direction_kind | |
13079 | remote_execution_direction (struct target_ops *self) | |
13080 | { | |
13081 | struct remote_state *rs = get_remote_state (); | |
13082 | ||
13083 | return rs->last_resume_exec_dir; | |
13084 | } | |
13085 | ||
c906108c | 13086 | static void |
fba45db2 | 13087 | init_remote_ops (void) |
c906108c | 13088 | { |
c5aa993b | 13089 | remote_ops.to_shortname = "remote"; |
c906108c | 13090 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13091 | remote_ops.to_doc = |
c906108c | 13092 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13093 | Specify the serial device it is connected to\n\ |
13094 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13095 | remote_ops.to_open = remote_open; |
13096 | remote_ops.to_close = remote_close; | |
c906108c | 13097 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13098 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13099 | remote_ops.to_resume = remote_resume; |
c906108c SS |
13100 | remote_ops.to_wait = remote_wait; |
13101 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13102 | remote_ops.to_store_registers = remote_store_registers; | |
13103 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13104 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13105 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13106 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13107 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13108 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13109 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13110 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13111 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13112 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13113 | remote_ops.to_watchpoint_addr_within_range = |
13114 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13115 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13116 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13117 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13118 | remote_ops.to_region_ok_for_hw_watchpoint |
13119 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13120 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13121 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13122 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13123 | remote_ops.to_load = remote_load; |
c906108c | 13124 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13125 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13126 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13127 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13128 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13129 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13130 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13131 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13132 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13133 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13134 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13135 | remote_ops.to_interrupt = remote_interrupt; |
93692b58 | 13136 | remote_ops.to_pass_ctrlc = remote_pass_ctrlc; |
4b8a223f | 13137 | remote_ops.to_xfer_partial = remote_xfer_partial; |
09c98b44 | 13138 | remote_ops.to_get_memory_xfer_limit = remote_get_memory_xfer_limit; |
96baa820 | 13139 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13140 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13141 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13142 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13143 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13144 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13145 | remote_ops.to_has_memory = default_child_has_memory; | |
13146 | remote_ops.to_has_stack = default_child_has_stack; | |
13147 | remote_ops.to_has_registers = default_child_has_registers; | |
13148 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13149 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13150 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13151 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13152 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13153 | remote_ops.to_flash_erase = remote_flash_erase; |
13154 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13155 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13156 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13157 | remote_ops.to_can_async_p = remote_can_async_p; |
13158 | remote_ops.to_is_async_p = remote_is_async_p; | |
13159 | remote_ops.to_async = remote_async; | |
65706a29 | 13160 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13161 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13162 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13163 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13164 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13165 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13166 | remote_ops.to_supports_disable_randomization |
13167 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13168 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13169 | remote_ops.to_fileio_open = remote_hostio_open; |
13170 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13171 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13172 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13173 | remote_ops.to_fileio_close = remote_hostio_close; |
13174 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13175 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13176 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13177 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13178 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13179 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13180 | remote_ops.to_trace_init = remote_trace_init; |
13181 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13182 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13183 | remote_ops.to_download_trace_state_variable |
13184 | = remote_download_trace_state_variable; | |
d248b706 KY |
13185 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13186 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13187 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13188 | remote_ops.to_trace_start = remote_trace_start; | |
13189 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13190 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13191 | remote_ops.to_trace_stop = remote_trace_stop; |
13192 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13193 | remote_ops.to_get_trace_state_variable_value |
13194 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13195 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13196 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13197 | remote_ops.to_upload_trace_state_variables |
13198 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13199 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13200 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13201 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13202 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13203 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13204 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13205 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13206 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13207 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13208 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13209 | remote_ops.to_static_tracepoint_marker_at |
13210 | = remote_static_tracepoint_marker_at; | |
13211 | remote_ops.to_static_tracepoint_markers_by_strid | |
13212 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13213 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13214 | remote_ops.to_use_agent = remote_use_agent; |
13215 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13216 | remote_ops.to_supports_btrace = remote_supports_btrace; |
13217 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
13218 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13219 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13220 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13221 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13222 | remote_ops.to_augmented_libraries_svr4_read = |
13223 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13224 | remote_ops.to_follow_fork = remote_follow_fork; |
13225 | remote_ops.to_follow_exec = remote_follow_exec; | |
13226 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13227 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13228 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13229 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13230 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13231 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
3a00c802 | 13232 | remote_ops.to_execution_direction = remote_execution_direction; |
c906108c SS |
13233 | } |
13234 | ||
13235 | /* Set up the extended remote vector by making a copy of the standard | |
13236 | remote vector and adding to it. */ | |
13237 | ||
13238 | static void | |
fba45db2 | 13239 | init_extended_remote_ops (void) |
c906108c SS |
13240 | { |
13241 | extended_remote_ops = remote_ops; | |
13242 | ||
0f71a2f6 | 13243 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13244 | extended_remote_ops.to_longname = |
c906108c | 13245 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13246 | extended_remote_ops.to_doc = |
c906108c | 13247 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13248 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13249 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13250 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13251 | extended_remote_ops.to_detach = extended_remote_detach; |
13252 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13253 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13254 | extended_remote_ops.to_supports_disable_randomization |
13255 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13256 | } |
13257 | ||
6426a772 | 13258 | static int |
6a109b6b | 13259 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13260 | { |
5d93a237 TT |
13261 | struct remote_state *rs = get_remote_state (); |
13262 | ||
c6ebd6cf | 13263 | if (!target_async_permitted) |
75c99385 PA |
13264 | /* We only enable async when the user specifically asks for it. */ |
13265 | return 0; | |
13266 | ||
23860348 | 13267 | /* We're async whenever the serial device is. */ |
5d93a237 | 13268 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13269 | } |
13270 | ||
13271 | static int | |
6a109b6b | 13272 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13273 | { |
5d93a237 TT |
13274 | struct remote_state *rs = get_remote_state (); |
13275 | ||
c6ebd6cf | 13276 | if (!target_async_permitted) |
75c99385 PA |
13277 | /* We only enable async when the user specifically asks for it. */ |
13278 | return 0; | |
13279 | ||
23860348 | 13280 | /* We're async whenever the serial device is. */ |
5d93a237 | 13281 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13282 | } |
13283 | ||
2acceee2 JM |
13284 | /* Pass the SERIAL event on and up to the client. One day this code |
13285 | will be able to delay notifying the client of an event until the | |
23860348 | 13286 | point where an entire packet has been received. */ |
2acceee2 | 13287 | |
2acceee2 JM |
13288 | static serial_event_ftype remote_async_serial_handler; |
13289 | ||
6426a772 | 13290 | static void |
819cc324 | 13291 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13292 | { |
2acceee2 JM |
13293 | /* Don't propogate error information up to the client. Instead let |
13294 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13295 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13296 | } |
13297 | ||
74531fed PA |
13298 | static void |
13299 | remote_async_inferior_event_handler (gdb_client_data data) | |
13300 | { | |
13301 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13302 | } | |
13303 | ||
2acceee2 | 13304 | static void |
6a3753b3 | 13305 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13306 | { |
5d93a237 TT |
13307 | struct remote_state *rs = get_remote_state (); |
13308 | ||
6a3753b3 | 13309 | if (enable) |
2acceee2 | 13310 | { |
88b496c3 | 13311 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13312 | |
13313 | /* If there are pending events in the stop reply queue tell the | |
13314 | event loop to process them. */ | |
13315 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13316 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13317 | /* For simplicity, below we clear the pending events token |
13318 | without remembering whether it is marked, so here we always | |
13319 | mark it. If there's actually no pending notification to | |
13320 | process, this ends up being a no-op (other than a spurious | |
13321 | event-loop wakeup). */ | |
13322 | if (target_is_non_stop_p ()) | |
13323 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13324 | } |
13325 | else | |
b7d2e916 PA |
13326 | { |
13327 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13328 | /* If the core is disabling async, it doesn't want to be |
13329 | disturbed with target events. Clear all async event sources | |
13330 | too. */ | |
b7d2e916 | 13331 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13332 | if (target_is_non_stop_p ()) |
13333 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13334 | } |
6426a772 JM |
13335 | } |
13336 | ||
65706a29 PA |
13337 | /* Implementation of the to_thread_events method. */ |
13338 | ||
13339 | static void | |
13340 | remote_thread_events (struct target_ops *ops, int enable) | |
13341 | { | |
13342 | struct remote_state *rs = get_remote_state (); | |
13343 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13344 | |
13345 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13346 | return; | |
13347 | ||
13348 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13349 | putpkt (rs->buf); | |
13350 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13351 | ||
13352 | switch (packet_ok (rs->buf, | |
13353 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13354 | { | |
13355 | case PACKET_OK: | |
13356 | if (strcmp (rs->buf, "OK") != 0) | |
13357 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13358 | break; | |
13359 | case PACKET_ERROR: | |
13360 | warning (_("Remote failure reply: %s"), rs->buf); | |
13361 | break; | |
13362 | case PACKET_UNKNOWN: | |
13363 | break; | |
13364 | } | |
13365 | } | |
13366 | ||
5a2468f5 | 13367 | static void |
c2d11a7d | 13368 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 13369 | { |
635c7e8a | 13370 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13371 | } |
13372 | ||
d471ea57 AC |
13373 | static void |
13374 | show_remote_cmd (char *args, int from_tty) | |
13375 | { | |
37a105a1 | 13376 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13377 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
13378 | struct cleanup *showlist_chain; |
13379 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 13380 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
13381 | |
13382 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
13383 | for (; list != NULL; list = list->next) | |
13384 | if (strcmp (list->name, "Z-packet") == 0) | |
13385 | continue; | |
427c3a89 DJ |
13386 | else if (list->type == not_set_cmd) |
13387 | /* Alias commands are exactly like the original, except they | |
13388 | don't have the normal type. */ | |
13389 | continue; | |
13390 | else | |
37a105a1 DJ |
13391 | { |
13392 | struct cleanup *option_chain | |
13393 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 13394 | |
37a105a1 DJ |
13395 | ui_out_field_string (uiout, "name", list->name); |
13396 | ui_out_text (uiout, ": "); | |
427c3a89 | 13397 | if (list->type == show_cmd) |
5b9afe8a | 13398 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
13399 | else |
13400 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
13401 | /* Close the tuple. */ |
13402 | do_cleanups (option_chain); | |
13403 | } | |
427c3a89 DJ |
13404 | |
13405 | /* Close the tuple. */ | |
13406 | do_cleanups (showlist_chain); | |
d471ea57 | 13407 | } |
5a2468f5 | 13408 | |
0f71a2f6 | 13409 | |
23860348 | 13410 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13411 | static void |
13412 | remote_new_objfile (struct objfile *objfile) | |
13413 | { | |
5d93a237 TT |
13414 | struct remote_state *rs = get_remote_state (); |
13415 | ||
13416 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13417 | remote_check_symbols (); |
dc8acb97 MS |
13418 | } |
13419 | ||
00bf0b85 SS |
13420 | /* Pull all the tracepoints defined on the target and create local |
13421 | data structures representing them. We don't want to create real | |
13422 | tracepoints yet, we don't want to mess up the user's existing | |
13423 | collection. */ | |
13424 | ||
13425 | static int | |
ab6617cc | 13426 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13427 | { |
00bf0b85 SS |
13428 | struct remote_state *rs = get_remote_state (); |
13429 | char *p; | |
d5551862 | 13430 | |
00bf0b85 SS |
13431 | /* Ask for a first packet of tracepoint definition. */ |
13432 | putpkt ("qTfP"); | |
13433 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13434 | p = rs->buf; | |
13435 | while (*p && *p != 'l') | |
d5551862 | 13436 | { |
00bf0b85 SS |
13437 | parse_tracepoint_definition (p, utpp); |
13438 | /* Ask for another packet of tracepoint definition. */ | |
13439 | putpkt ("qTsP"); | |
13440 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13441 | p = rs->buf; | |
d5551862 | 13442 | } |
00bf0b85 | 13443 | return 0; |
d5551862 SS |
13444 | } |
13445 | ||
00bf0b85 | 13446 | static int |
181e3713 TT |
13447 | remote_upload_trace_state_variables (struct target_ops *self, |
13448 | struct uploaded_tsv **utsvp) | |
d5551862 | 13449 | { |
00bf0b85 | 13450 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13451 | char *p; |
d5551862 | 13452 | |
00bf0b85 SS |
13453 | /* Ask for a first packet of variable definition. */ |
13454 | putpkt ("qTfV"); | |
d5551862 SS |
13455 | getpkt (&rs->buf, &rs->buf_size, 0); |
13456 | p = rs->buf; | |
00bf0b85 | 13457 | while (*p && *p != 'l') |
d5551862 | 13458 | { |
00bf0b85 SS |
13459 | parse_tsv_definition (p, utsvp); |
13460 | /* Ask for another packet of variable definition. */ | |
13461 | putpkt ("qTsV"); | |
d5551862 SS |
13462 | getpkt (&rs->buf, &rs->buf_size, 0); |
13463 | p = rs->buf; | |
13464 | } | |
00bf0b85 | 13465 | return 0; |
d5551862 SS |
13466 | } |
13467 | ||
c1e36e3e PA |
13468 | /* The "set/show range-stepping" show hook. */ |
13469 | ||
13470 | static void | |
13471 | show_range_stepping (struct ui_file *file, int from_tty, | |
13472 | struct cmd_list_element *c, | |
13473 | const char *value) | |
13474 | { | |
13475 | fprintf_filtered (file, | |
13476 | _("Debugger's willingness to use range stepping " | |
13477 | "is %s.\n"), value); | |
13478 | } | |
13479 | ||
13480 | /* The "set/show range-stepping" set hook. */ | |
13481 | ||
13482 | static void | |
13483 | set_range_stepping (char *ignore_args, int from_tty, | |
13484 | struct cmd_list_element *c) | |
13485 | { | |
5d93a237 TT |
13486 | struct remote_state *rs = get_remote_state (); |
13487 | ||
c1e36e3e PA |
13488 | /* Whene enabling, check whether range stepping is actually |
13489 | supported by the target, and warn if not. */ | |
13490 | if (use_range_stepping) | |
13491 | { | |
5d93a237 | 13492 | if (rs->remote_desc != NULL) |
c1e36e3e | 13493 | { |
4082afcc | 13494 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13495 | remote_vcont_probe (rs); |
13496 | ||
4082afcc | 13497 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13498 | && rs->supports_vCont.r) |
13499 | return; | |
13500 | } | |
13501 | ||
13502 | warning (_("Range stepping is not supported by the current target")); | |
13503 | } | |
13504 | } | |
13505 | ||
c906108c | 13506 | void |
fba45db2 | 13507 | _initialize_remote (void) |
c906108c | 13508 | { |
9a7071a8 | 13509 | struct cmd_list_element *cmd; |
6f937416 | 13510 | const char *cmd_name; |
ea9c271d | 13511 | |
0f71a2f6 | 13512 | /* architecture specific data */ |
2bc416ba | 13513 | remote_gdbarch_data_handle = |
23860348 | 13514 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13515 | remote_g_packet_data_handle = |
13516 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13517 | |
94585166 DB |
13518 | remote_pspace_data |
13519 | = register_program_space_data_with_cleanup (NULL, | |
13520 | remote_pspace_data_cleanup); | |
13521 | ||
ea9c271d DJ |
13522 | /* Initialize the per-target state. At the moment there is only one |
13523 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13524 | time. */ |
13525 | remote_state = new_remote_state (); | |
ea9c271d | 13526 | |
c906108c SS |
13527 | init_remote_ops (); |
13528 | add_target (&remote_ops); | |
13529 | ||
13530 | init_extended_remote_ops (); | |
13531 | add_target (&extended_remote_ops); | |
cce74817 | 13532 | |
dc8acb97 | 13533 | /* Hook into new objfile notification. */ |
06d3b283 | 13534 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13535 | /* We're no longer interested in notification events of an inferior |
13536 | when it exits. */ | |
13537 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13538 | |
c906108c SS |
13539 | #if 0 |
13540 | init_remote_threadtests (); | |
13541 | #endif | |
13542 | ||
722247f1 | 13543 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13544 | /* set/show remote ... */ |
d471ea57 | 13545 | |
1bedd215 | 13546 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13547 | Remote protocol specific variables\n\ |
13548 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13549 | the packets being used"), |
cff3e48b | 13550 | &remote_set_cmdlist, "set remote ", |
23860348 | 13551 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13552 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13553 | Remote protocol specific variables\n\ |
13554 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13555 | the packets being used"), |
cff3e48b | 13556 | &remote_show_cmdlist, "show remote ", |
23860348 | 13557 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13558 | |
1a966eab AC |
13559 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13560 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13561 | Argument is a single section name (default: all loaded sections).\n\ |
13562 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13563 | &cmdlist); |
13564 | ||
1a966eab AC |
13565 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13566 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13567 | maintenance packet TEXT\n\ |
13568 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13569 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13570 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13571 | terminating `#' character and checksum."), |
c906108c SS |
13572 | &maintenancelist); |
13573 | ||
7915a72c AC |
13574 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13575 | Set whether to send break if interrupted."), _("\ | |
13576 | Show whether to send break if interrupted."), _("\ | |
13577 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13578 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13579 | &setlist, &showlist); |
9a7071a8 JB |
13580 | cmd_name = "remotebreak"; |
13581 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13582 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13583 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13584 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13585 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13586 | ||
13587 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13588 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13589 | _("\ | |
9a7071a8 JB |
13590 | Set interrupt sequence to remote target."), _("\ |
13591 | Show interrupt sequence to remote target."), _("\ | |
13592 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13593 | NULL, show_interrupt_sequence, | |
13594 | &remote_set_cmdlist, | |
13595 | &remote_show_cmdlist); | |
13596 | ||
13597 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13598 | &interrupt_on_connect, _("\ | |
13599 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13600 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13601 | If set, interrupt sequence is sent to remote target."), | |
13602 | NULL, NULL, | |
13603 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 13604 | |
23860348 | 13605 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 13606 | |
1a966eab AC |
13607 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
13608 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 13609 | &setlist); |
1a966eab AC |
13610 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
13611 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
13612 | &showlist); |
13613 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
13614 | set_memory_write_packet_size, _("\ |
13615 | Set the maximum number of bytes per memory-write packet.\n\ | |
13616 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13617 | default packet size. The actual limit is further reduced\n\ | |
13618 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13619 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13620 | &remote_set_cmdlist); |
13621 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
13622 | set_memory_read_packet_size, _("\ |
13623 | Set the maximum number of bytes per memory-read packet.\n\ | |
13624 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13625 | default packet size. The actual limit is further reduced\n\ | |
13626 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13627 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13628 | &remote_set_cmdlist); |
13629 | add_cmd ("memory-write-packet-size", no_class, | |
13630 | show_memory_write_packet_size, | |
1a966eab | 13631 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
13632 | &remote_show_cmdlist); |
13633 | add_cmd ("memory-read-packet-size", no_class, | |
13634 | show_memory_read_packet_size, | |
1a966eab | 13635 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 13636 | &remote_show_cmdlist); |
c906108c | 13637 | |
b3f42336 | 13638 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
13639 | &remote_hw_watchpoint_limit, _("\ |
13640 | Set the maximum number of target hardware watchpoints."), _("\ | |
13641 | Show the maximum number of target hardware watchpoints."), _("\ | |
13642 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13643 | NULL, NULL, /* FIXME: i18n: The maximum |
13644 | number of target hardware | |
13645 | watchpoints is %s. */ | |
b3f42336 | 13646 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
13647 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
13648 | &remote_hw_watchpoint_length_limit, _("\ | |
13649 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13650 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13651 | Specify a negative limit for unlimited."), | |
13652 | NULL, NULL, /* FIXME: i18n: The maximum | |
13653 | length (in bytes) of a target | |
13654 | hardware watchpoint is %s. */ | |
13655 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 13656 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
13657 | &remote_hw_breakpoint_limit, _("\ |
13658 | Set the maximum number of target hardware breakpoints."), _("\ | |
13659 | Show the maximum number of target hardware breakpoints."), _("\ | |
13660 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13661 | NULL, NULL, /* FIXME: i18n: The maximum |
13662 | number of target hardware | |
13663 | breakpoints is %s. */ | |
b3f42336 | 13664 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 13665 | |
1b493192 PA |
13666 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
13667 | &remote_address_size, _("\ | |
4d28ad1e AC |
13668 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
13669 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
13670 | NULL, |
13671 | NULL, /* FIXME: i18n: */ | |
13672 | &setlist, &showlist); | |
c906108c | 13673 | |
ca4f7f8b PA |
13674 | init_all_packet_configs (); |
13675 | ||
444abaca | 13676 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 13677 | "X", "binary-download", 1); |
0f71a2f6 | 13678 | |
444abaca | 13679 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 13680 | "vCont", "verbose-resume", 0); |
506fb367 | 13681 | |
89be2091 DJ |
13682 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
13683 | "QPassSignals", "pass-signals", 0); | |
13684 | ||
82075af2 JS |
13685 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
13686 | "QCatchSyscalls", "catch-syscalls", 0); | |
13687 | ||
9b224c5e PA |
13688 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
13689 | "QProgramSignals", "program-signals", 0); | |
13690 | ||
444abaca | 13691 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 13692 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 13693 | |
444abaca | 13694 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 13695 | "P", "set-register", 1); |
d471ea57 | 13696 | |
444abaca | 13697 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 13698 | "p", "fetch-register", 1); |
b96ec7ac | 13699 | |
444abaca | 13700 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 13701 | "Z0", "software-breakpoint", 0); |
d471ea57 | 13702 | |
444abaca | 13703 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 13704 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 13705 | |
444abaca | 13706 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 13707 | "Z2", "write-watchpoint", 0); |
d471ea57 | 13708 | |
444abaca | 13709 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 13710 | "Z3", "read-watchpoint", 0); |
d471ea57 | 13711 | |
444abaca | 13712 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 13713 | "Z4", "access-watchpoint", 0); |
d471ea57 | 13714 | |
0876f84a DJ |
13715 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
13716 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 13717 | |
c78fa86a GB |
13718 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
13719 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
13720 | ||
23181151 DJ |
13721 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
13722 | "qXfer:features:read", "target-features", 0); | |
13723 | ||
cfa9d6d9 DJ |
13724 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
13725 | "qXfer:libraries:read", "library-info", 0); | |
13726 | ||
2268b414 JK |
13727 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
13728 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
13729 | ||
fd79ecee DJ |
13730 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
13731 | "qXfer:memory-map:read", "memory-map", 0); | |
13732 | ||
0e7f50da UW |
13733 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
13734 | "qXfer:spu:read", "read-spu-object", 0); | |
13735 | ||
13736 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
13737 | "qXfer:spu:write", "write-spu-object", 0); | |
13738 | ||
07e059b5 VP |
13739 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
13740 | "qXfer:osdata:read", "osdata", 0); | |
13741 | ||
dc146f7c VP |
13742 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
13743 | "qXfer:threads:read", "threads", 0); | |
13744 | ||
4aa995e1 PA |
13745 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
13746 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
13747 | ||
13748 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
13749 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
13750 | ||
b3b9301e PA |
13751 | add_packet_config_cmd |
13752 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 13753 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 13754 | |
169081d0 TG |
13755 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
13756 | "qXfer:uib:read", "unwind-info-block", 0); | |
13757 | ||
444abaca | 13758 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 13759 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
13760 | 0); |
13761 | ||
711e434b PM |
13762 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
13763 | "qGetTIBAddr", "get-thread-information-block-address", | |
13764 | 0); | |
13765 | ||
40ab02ce MS |
13766 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
13767 | "bc", "reverse-continue", 0); | |
13768 | ||
13769 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
13770 | "bs", "reverse-step", 0); | |
13771 | ||
be2a5f71 DJ |
13772 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
13773 | "qSupported", "supported-packets", 0); | |
13774 | ||
08388c79 DE |
13775 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
13776 | "qSearch:memory", "search-memory", 0); | |
13777 | ||
bd3eecc3 PA |
13778 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
13779 | "qTStatus", "trace-status", 0); | |
13780 | ||
15a201c8 GB |
13781 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
13782 | "vFile:setfs", "hostio-setfs", 0); | |
13783 | ||
a6b151f1 DJ |
13784 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
13785 | "vFile:open", "hostio-open", 0); | |
13786 | ||
13787 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
13788 | "vFile:pread", "hostio-pread", 0); | |
13789 | ||
13790 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
13791 | "vFile:pwrite", "hostio-pwrite", 0); | |
13792 | ||
13793 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
13794 | "vFile:close", "hostio-close", 0); | |
13795 | ||
13796 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
13797 | "vFile:unlink", "hostio-unlink", 0); | |
13798 | ||
b9e7b9c3 UW |
13799 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
13800 | "vFile:readlink", "hostio-readlink", 0); | |
13801 | ||
0a93529c GB |
13802 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
13803 | "vFile:fstat", "hostio-fstat", 0); | |
13804 | ||
2d717e4f DJ |
13805 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
13806 | "vAttach", "attach", 0); | |
13807 | ||
13808 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
13809 | "vRun", "run", 0); | |
13810 | ||
a6f3e723 SL |
13811 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
13812 | "QStartNoAckMode", "noack", 0); | |
13813 | ||
82f73884 PA |
13814 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
13815 | "vKill", "kill", 0); | |
13816 | ||
0b16c5cf PA |
13817 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
13818 | "qAttached", "query-attached", 0); | |
13819 | ||
782b2b07 | 13820 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
13821 | "ConditionalTracepoints", |
13822 | "conditional-tracepoints", 0); | |
3788aec7 LM |
13823 | |
13824 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
13825 | "ConditionalBreakpoints", | |
13826 | "conditional-breakpoints", 0); | |
13827 | ||
d3ce09f5 SS |
13828 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
13829 | "BreakpointCommands", | |
13830 | "breakpoint-commands", 0); | |
13831 | ||
7a697b8d SS |
13832 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
13833 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 13834 | |
409873ef SS |
13835 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
13836 | "TracepointSource", "TracepointSource", 0); | |
13837 | ||
d914c394 SS |
13838 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
13839 | "QAllow", "allow", 0); | |
13840 | ||
0fb4aa4b PA |
13841 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
13842 | "StaticTracepoints", "static-tracepoints", 0); | |
13843 | ||
1e4d1764 YQ |
13844 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
13845 | "InstallInTrace", "install-in-trace", 0); | |
13846 | ||
0fb4aa4b PA |
13847 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
13848 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
13849 | ||
78d85199 YQ |
13850 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
13851 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
13852 | ||
03583c20 UW |
13853 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
13854 | "QDisableRandomization", "disable-randomization", 0); | |
13855 | ||
d1feda86 YQ |
13856 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
13857 | "QAgent", "agent", 0); | |
13858 | ||
f6f899bf HAQ |
13859 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
13860 | "QTBuffer:size", "trace-buffer-size", 0); | |
13861 | ||
9accd112 MM |
13862 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
13863 | "Qbtrace:off", "disable-btrace", 0); | |
13864 | ||
13865 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
13866 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13867 | ||
13868 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13869 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
13870 | |
13871 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13872 | "qXfer:btrace", "read-btrace", 0); | |
13873 | ||
f4abbc16 MM |
13874 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13875 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13876 | ||
d33501a5 MM |
13877 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
13878 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13879 | ||
73b8c1fd PA |
13880 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
13881 | "multiprocess-feature", "multiprocess-feature", 0); | |
13882 | ||
f7e6eed5 PA |
13883 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
13884 | "swbreak-feature", "swbreak-feature", 0); | |
13885 | ||
13886 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13887 | "hwbreak-feature", "hwbreak-feature", 0); | |
13888 | ||
89245bc0 DB |
13889 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
13890 | "fork-event-feature", "fork-event-feature", 0); | |
13891 | ||
13892 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13893 | "vfork-event-feature", "vfork-event-feature", 0); | |
13894 | ||
b20a6524 MM |
13895 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
13896 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13897 | ||
750ce8d1 YQ |
13898 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
13899 | "vContSupported", "verbose-resume-supported", 0); | |
13900 | ||
94585166 DB |
13901 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
13902 | "exec-event-feature", "exec-event-feature", 0); | |
13903 | ||
de979965 PA |
13904 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
13905 | "vCtrlC", "ctrl-c", 0); | |
13906 | ||
65706a29 PA |
13907 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
13908 | "QThreadEvents", "thread-events", 0); | |
13909 | ||
f2faf941 PA |
13910 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
13911 | "N stop reply", "no-resumed-stop-reply", 0); | |
13912 | ||
0b736949 DB |
13913 | /* Assert that we've registered "set remote foo-packet" commands |
13914 | for all packet configs. */ | |
ca4f7f8b PA |
13915 | { |
13916 | int i; | |
13917 | ||
13918 | for (i = 0; i < PACKET_MAX; i++) | |
13919 | { | |
13920 | /* Ideally all configs would have a command associated. Some | |
13921 | still don't though. */ | |
13922 | int excepted; | |
13923 | ||
13924 | switch (i) | |
13925 | { | |
13926 | case PACKET_QNonStop: | |
ca4f7f8b PA |
13927 | case PACKET_EnableDisableTracepoints_feature: |
13928 | case PACKET_tracenz_feature: | |
13929 | case PACKET_DisconnectedTracing_feature: | |
13930 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13931 | case PACKET_qCRC: |
13932 | /* Additions to this list need to be well justified: | |
13933 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13934 | excepted = 1; |
13935 | break; | |
13936 | default: | |
13937 | excepted = 0; | |
13938 | break; | |
13939 | } | |
13940 | ||
13941 | /* This catches both forgetting to add a config command, and | |
13942 | forgetting to remove a packet from the exception list. */ | |
13943 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13944 | } | |
13945 | } | |
13946 | ||
37a105a1 DJ |
13947 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13948 | Z sub-packet has its own set and show commands, but users may | |
13949 | have sets to this variable in their .gdbinit files (or in their | |
13950 | documentation). */ | |
e9e68a56 | 13951 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13952 | &remote_Z_packet_detect, _("\ |
13953 | Set use of remote protocol `Z' packets"), _("\ | |
13954 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13955 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13956 | packets."), |
e9e68a56 | 13957 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13958 | show_remote_protocol_Z_packet_cmd, |
13959 | /* FIXME: i18n: Use of remote protocol | |
13960 | `Z' packets is %s. */ | |
e9e68a56 | 13961 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13962 | |
a6b151f1 DJ |
13963 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13964 | Manipulate files on the remote system\n\ | |
13965 | Transfer files to and from the remote target system."), | |
13966 | &remote_cmdlist, "remote ", | |
13967 | 0 /* allow-unknown */, &cmdlist); | |
13968 | ||
13969 | add_cmd ("put", class_files, remote_put_command, | |
13970 | _("Copy a local file to the remote system."), | |
13971 | &remote_cmdlist); | |
13972 | ||
13973 | add_cmd ("get", class_files, remote_get_command, | |
13974 | _("Copy a remote file to the local system."), | |
13975 | &remote_cmdlist); | |
13976 | ||
13977 | add_cmd ("delete", class_files, remote_delete_command, | |
13978 | _("Delete a remote file."), | |
13979 | &remote_cmdlist); | |
13980 | ||
2d717e4f | 13981 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 13982 | &remote_exec_file_var, _("\ |
2d717e4f | 13983 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
13984 | Show the remote pathname for \"run\""), NULL, |
13985 | set_remote_exec_file, | |
13986 | show_remote_exec_file, | |
13987 | &remote_set_cmdlist, | |
13988 | &remote_show_cmdlist); | |
2d717e4f | 13989 | |
c1e36e3e PA |
13990 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13991 | &use_range_stepping, _("\ | |
13992 | Enable or disable range stepping."), _("\ | |
13993 | Show whether target-assisted range stepping is enabled."), _("\ | |
13994 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13995 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13996 | of issuing multiple single-steps. This speeds up source level\n\ | |
13997 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13998 | stepping is supported by the target. The default is on."), | |
13999 | set_range_stepping, | |
14000 | show_range_stepping, | |
14001 | &setlist, | |
14002 | &showlist); | |
14003 | ||
449092f6 CV |
14004 | /* Eventually initialize fileio. See fileio.c */ |
14005 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 14006 | |
ba348170 | 14007 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 14008 | special ptids with it set to != 0. */ |
ba348170 PA |
14009 | magic_null_ptid = ptid_build (42000, -1, 1); |
14010 | not_sent_ptid = ptid_build (42000, -2, 1); | |
14011 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
14012 | |
14013 | target_buf_size = 2048; | |
224c3ddb | 14014 | target_buf = (char *) xmalloc (target_buf_size); |
c906108c | 14015 | } |
10760264 | 14016 |