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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
28e7fd62 | 3 | Copyright (C) 1988-2013 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 SS |
22 | #include "defs.h" |
23 | #include "gdb_string.h" | |
24 | #include <ctype.h> | |
25 | #include <fcntl.h> | |
c906108c SS |
26 | #include "inferior.h" |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
60250e8b | 29 | #include "exceptions.h" |
c906108c | 30 | #include "target.h" |
c5aa993b | 31 | /*#include "terminal.h" */ |
c906108c SS |
32 | #include "gdbcmd.h" |
33 | #include "objfiles.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "gdbthread.h" | |
c2c6d25f | 36 | #include "remote.h" |
722247f1 | 37 | #include "remote-notif.h" |
4e052eda | 38 | #include "regcache.h" |
fd0407d6 | 39 | #include "value.h" |
1ff9c3d6 | 40 | #include "gdb_assert.h" |
6867ae3e | 41 | #include "observer.h" |
a77053c2 | 42 | #include "solib.h" |
37a105a1 DJ |
43 | #include "cli/cli-decode.h" |
44 | #include "cli/cli-setshow.h" | |
424163ea | 45 | #include "target-descriptions.h" |
a4453b7e | 46 | #include "gdb_bfd.h" |
614c279d | 47 | #include "filestuff.h" |
c906108c | 48 | |
7a292a7a | 49 | #include <ctype.h> |
9846de1b | 50 | #include <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" |
3e88cf8d | 63 | #include "gdb_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" |
35b1e5cc | 73 | |
0df8b418 | 74 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
75 | static char *target_buf; |
76 | static long target_buf_size; | |
35b1e5cc | 77 | |
6765f3e5 DJ |
78 | /* The size to align memory write packets, when practical. The protocol |
79 | does not guarantee any alignment, and gdb will generate short | |
80 | writes and unaligned writes, but even as a best-effort attempt this | |
81 | can improve bulk transfers. For instance, if a write is misaligned | |
82 | relative to the target's data bus, the stub may need to make an extra | |
83 | round trip fetching data from the target. This doesn't make a | |
84 | huge difference, but it's easy to do, so we try to be helpful. | |
85 | ||
86 | The alignment chosen is arbitrary; usually data bus width is | |
87 | important here, not the possibly larger cache line size. */ | |
88 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
89 | ||
23860348 | 90 | /* Prototypes for local functions. */ |
934b9bac | 91 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 92 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 93 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 94 | int forever, int *is_notif); |
6426a772 | 95 | |
934b9bac JK |
96 | static void async_handle_remote_sigint (int); |
97 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 98 | |
a14ed312 | 99 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 100 | |
316f2060 | 101 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 102 | |
a14ed312 | 103 | static void remote_open (char *name, int from_tty); |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 106 | |
75c99385 | 107 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 108 | |
460014f5 | 109 | static void remote_close (void); |
c906108c | 110 | |
136d6dae | 111 | static void remote_mourn (struct target_ops *ops); |
c906108c | 112 | |
a14ed312 | 113 | static void extended_remote_restart (void); |
c906108c | 114 | |
136d6dae | 115 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 116 | |
a14ed312 | 117 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 118 | |
6d820c5c | 119 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 120 | |
a14ed312 | 121 | static int readchar (int timeout); |
c906108c | 122 | |
c33e31fd PA |
123 | static void remote_serial_write (const char *str, int len); |
124 | ||
7d85a9c0 | 125 | static void remote_kill (struct target_ops *ops); |
c906108c | 126 | |
a14ed312 | 127 | static int tohex (int nib); |
c906108c | 128 | |
75c99385 PA |
129 | static int remote_can_async_p (void); |
130 | ||
131 | static int remote_is_async_p (void); | |
132 | ||
133 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
134 | void *context), void *context); | |
135 | ||
136d6dae | 136 | static void remote_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 137 | |
934b9bac | 138 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 139 | |
a14ed312 | 140 | static void interrupt_query (void); |
c906108c | 141 | |
79d7f229 PA |
142 | static void set_general_thread (struct ptid ptid); |
143 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 144 | |
a14ed312 | 145 | static void get_offsets (void); |
c906108c | 146 | |
6d820c5c DJ |
147 | static void skip_frame (void); |
148 | ||
149 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumlen (ULONGEST num); |
c906108c | 152 | |
a14ed312 | 153 | static void init_remote_ops (void); |
c906108c | 154 | |
a14ed312 | 155 | static void init_extended_remote_ops (void); |
c906108c | 156 | |
94cc34af | 157 | static void remote_stop (ptid_t); |
c906108c | 158 | |
a14ed312 | 159 | static int ishex (int ch, int *val); |
c906108c | 160 | |
a14ed312 | 161 | static int stubhex (int ch); |
c906108c | 162 | |
a14ed312 | 163 | static int hexnumstr (char *, ULONGEST); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 166 | |
a14ed312 | 167 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 168 | |
a14ed312 | 169 | static void print_packet (char *); |
c906108c | 170 | |
a14ed312 | 171 | static void compare_sections_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void packet_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 176 | |
39f77062 | 177 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 178 | |
a14ed312 | 179 | static void remote_find_new_threads (void); |
c906108c | 180 | |
30559e10 | 181 | static int fromhex (int a); |
c906108c | 182 | |
a14ed312 | 183 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 184 | |
a14ed312 | 185 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 186 | |
5a2468f5 | 187 | struct packet_config; |
5a2468f5 | 188 | |
a14ed312 | 189 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 190 | |
d471ea57 | 191 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 192 | |
bb572ddd DJ |
193 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
194 | struct cmd_list_element *c); | |
195 | ||
196 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
197 | int from_tty, | |
198 | struct cmd_list_element *c, | |
199 | const char *value); | |
200 | ||
82f73884 PA |
201 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
202 | static ptid_t read_ptid (char *buf, char **obuf); | |
203 | ||
d914c394 SS |
204 | static void remote_set_permissions (void); |
205 | ||
d5551862 | 206 | struct remote_state; |
00bf0b85 | 207 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 208 | |
00bf0b85 SS |
209 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
210 | ||
211 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
212 | ||
c8d104ad PA |
213 | static void remote_query_supported (void); |
214 | ||
36d25514 | 215 | static void remote_check_symbols (void); |
c8d104ad | 216 | |
a14ed312 | 217 | void _initialize_remote (void); |
c906108c | 218 | |
74531fed | 219 | struct stop_reply; |
74531fed | 220 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 221 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 222 | static void push_stop_reply (struct stop_reply *); |
f48ff2a7 | 223 | static void discard_pending_stop_replies_in_queue (void); |
74531fed PA |
224 | static int peek_stop_reply (ptid_t ptid); |
225 | ||
226 | static void remote_async_inferior_event_handler (gdb_client_data); | |
74531fed | 227 | |
d3fd5342 PA |
228 | static void remote_terminal_ours (void); |
229 | ||
d962ef82 DJ |
230 | static int remote_read_description_p (struct target_ops *target); |
231 | ||
176a6961 | 232 | static void remote_console_output (char *msg); |
dde08ee1 | 233 | |
b775012e LM |
234 | static int remote_supports_cond_breakpoints (void); |
235 | ||
d3ce09f5 SS |
236 | static int remote_can_run_breakpoint_commands (void); |
237 | ||
a6b151f1 DJ |
238 | /* For "remote". */ |
239 | ||
240 | static struct cmd_list_element *remote_cmdlist; | |
241 | ||
bb572ddd DJ |
242 | /* For "set remote" and "show remote". */ |
243 | ||
244 | static struct cmd_list_element *remote_set_cmdlist; | |
245 | static struct cmd_list_element *remote_show_cmdlist; | |
246 | ||
d458bd84 PA |
247 | /* Stub vCont actions support. |
248 | ||
249 | Each field is a boolean flag indicating whether the stub reports | |
250 | support for the corresponding action. */ | |
251 | ||
252 | struct vCont_action_support | |
253 | { | |
254 | /* vCont;t */ | |
255 | int t; | |
c1e36e3e PA |
256 | |
257 | /* vCont;r */ | |
258 | int r; | |
d458bd84 PA |
259 | }; |
260 | ||
c1e36e3e PA |
261 | /* Controls whether GDB is willing to use range stepping. */ |
262 | ||
263 | static int use_range_stepping = 1; | |
264 | ||
0d031856 TT |
265 | #define OPAQUETHREADBYTES 8 |
266 | ||
267 | /* a 64 bit opaque identifier */ | |
268 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
269 | ||
270 | /* About this many threadisds fit in a packet. */ | |
271 | ||
272 | #define MAXTHREADLISTRESULTS 32 | |
273 | ||
ea9c271d DJ |
274 | /* Description of the remote protocol state for the currently |
275 | connected target. This is per-target state, and independent of the | |
276 | selected architecture. */ | |
277 | ||
278 | struct remote_state | |
279 | { | |
280 | /* A buffer to use for incoming packets, and its current size. The | |
281 | buffer is grown dynamically for larger incoming packets. | |
282 | Outgoing packets may also be constructed in this buffer. | |
283 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
284 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
285 | packets. */ | |
286 | char *buf; | |
287 | long buf_size; | |
be2a5f71 | 288 | |
1e51243a PA |
289 | /* True if we're going through initial connection setup (finding out |
290 | about the remote side's threads, relocating symbols, etc.). */ | |
291 | int starting_up; | |
292 | ||
be2a5f71 DJ |
293 | /* If we negotiated packet size explicitly (and thus can bypass |
294 | heuristics for the largest packet size that will not overflow | |
295 | a buffer in the stub), this will be set to that packet size. | |
296 | Otherwise zero, meaning to use the guessed size. */ | |
297 | long explicit_packet_size; | |
2d717e4f DJ |
298 | |
299 | /* remote_wait is normally called when the target is running and | |
300 | waits for a stop reply packet. But sometimes we need to call it | |
301 | when the target is already stopped. We can send a "?" packet | |
302 | and have remote_wait read the response. Or, if we already have | |
303 | the response, we can stash it in BUF and tell remote_wait to | |
304 | skip calling getpkt. This flag is set when BUF contains a | |
305 | stop reply packet and the target is not waiting. */ | |
306 | int cached_wait_status; | |
a6f3e723 SL |
307 | |
308 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
309 | expect acks from each other. The connection is assumed to be | |
310 | reliable. */ | |
311 | int noack_mode; | |
82f73884 PA |
312 | |
313 | /* True if we're connected in extended remote mode. */ | |
314 | int extended; | |
315 | ||
316 | /* True if the stub reported support for multi-process | |
317 | extensions. */ | |
318 | int multi_process_aware; | |
e24a49d8 PA |
319 | |
320 | /* True if we resumed the target and we're waiting for the target to | |
321 | stop. In the mean time, we can't start another command/query. | |
322 | The remote server wouldn't be ready to process it, so we'd | |
323 | timeout waiting for a reply that would never come and eventually | |
324 | we'd close the connection. This can happen in asynchronous mode | |
325 | because we allow GDB commands while the target is running. */ | |
326 | int waiting_for_stop_reply; | |
74531fed PA |
327 | |
328 | /* True if the stub reports support for non-stop mode. */ | |
329 | int non_stop_aware; | |
330 | ||
d458bd84 PA |
331 | /* The status of the stub support for the various vCont actions. */ |
332 | struct vCont_action_support supports_vCont; | |
782b2b07 SS |
333 | |
334 | /* True if the stub reports support for conditional tracepoints. */ | |
335 | int cond_tracepoints; | |
3a29589a | 336 | |
3788aec7 LM |
337 | /* True if the stub reports support for target-side breakpoint |
338 | conditions. */ | |
339 | int cond_breakpoints; | |
340 | ||
d3ce09f5 SS |
341 | /* True if the stub reports support for target-side breakpoint |
342 | commands. */ | |
343 | int breakpoint_commands; | |
344 | ||
7a697b8d SS |
345 | /* True if the stub reports support for fast tracepoints. */ |
346 | int fast_tracepoints; | |
347 | ||
0fb4aa4b PA |
348 | /* True if the stub reports support for static tracepoints. */ |
349 | int static_tracepoints; | |
350 | ||
1e4d1764 YQ |
351 | /* True if the stub reports support for installing tracepoint while |
352 | tracing. */ | |
353 | int install_in_trace; | |
354 | ||
d5551862 SS |
355 | /* True if the stub can continue running a trace while GDB is |
356 | disconnected. */ | |
357 | int disconnected_tracing; | |
358 | ||
d248b706 KY |
359 | /* True if the stub reports support for enabling and disabling |
360 | tracepoints while a trace experiment is running. */ | |
361 | int enable_disable_tracepoints; | |
362 | ||
3065dfb6 SS |
363 | /* True if the stub can collect strings using tracenz bytecode. */ |
364 | int string_tracing; | |
365 | ||
ced63ec0 GB |
366 | /* True if the stub supports qXfer:libraries-svr4:read with a |
367 | non-empty annex. */ | |
368 | int augmented_libraries_svr4_read; | |
369 | ||
3a29589a DJ |
370 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
371 | responded to that. */ | |
372 | int ctrlc_pending_p; | |
5d93a237 TT |
373 | |
374 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
375 | remote_open knows that we don't have a file open when the program | |
376 | starts. */ | |
377 | struct serial *remote_desc; | |
47f8a51d TT |
378 | |
379 | /* These are the threads which we last sent to the remote system. The | |
380 | TID member will be -1 for all or -2 for not sent yet. */ | |
381 | ptid_t general_thread; | |
382 | ptid_t continue_thread; | |
262e1174 TT |
383 | |
384 | /* This is the traceframe which we last selected on the remote system. | |
385 | It will be -1 if no traceframe is selected. */ | |
386 | int remote_traceframe_number; | |
747dc59d TT |
387 | |
388 | char *last_pass_packet; | |
5e4a05c4 TT |
389 | |
390 | /* The last QProgramSignals packet sent to the target. We bypass | |
391 | sending a new program signals list down to the target if the new | |
392 | packet is exactly the same as the last we sent. IOW, we only let | |
393 | the target know about program signals list changes. */ | |
394 | char *last_program_signals_packet; | |
b73be471 TT |
395 | |
396 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
397 | |
398 | int last_sent_step; | |
8e88304f TT |
399 | |
400 | char *finished_object; | |
401 | char *finished_annex; | |
402 | ULONGEST finished_offset; | |
b80fafe3 TT |
403 | |
404 | /* Should we try the 'ThreadInfo' query packet? | |
405 | ||
406 | This variable (NOT available to the user: auto-detect only!) | |
407 | determines whether GDB will use the new, simpler "ThreadInfo" | |
408 | query or the older, more complex syntax for thread queries. | |
409 | This is an auto-detect variable (set to true at each connect, | |
410 | and set to false when the target fails to recognize it). */ | |
411 | int use_threadinfo_query; | |
412 | int use_threadextra_query; | |
88b496c3 TT |
413 | |
414 | void (*async_client_callback) (enum inferior_event_type event_type, | |
415 | void *context); | |
416 | void *async_client_context; | |
ee154bee TT |
417 | |
418 | /* This is set to the data address of the access causing the target | |
419 | to stop for a watchpoint. */ | |
420 | CORE_ADDR remote_watch_data_address; | |
421 | ||
422 | /* This is non-zero if target stopped for a watchpoint. */ | |
423 | int remote_stopped_by_watchpoint_p; | |
0d031856 TT |
424 | |
425 | threadref echo_nextthread; | |
426 | threadref nextthread; | |
427 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
428 | |
429 | /* The state of remote notification. */ | |
430 | struct remote_notif_state *notif_state; | |
ea9c271d DJ |
431 | }; |
432 | ||
dc146f7c VP |
433 | /* Private data that we'll store in (struct thread_info)->private. */ |
434 | struct private_thread_info | |
435 | { | |
436 | char *extra; | |
437 | int core; | |
438 | }; | |
439 | ||
440 | static void | |
441 | free_private_thread_info (struct private_thread_info *info) | |
442 | { | |
443 | xfree (info->extra); | |
444 | xfree (info); | |
445 | } | |
446 | ||
82f73884 PA |
447 | /* Returns true if the multi-process extensions are in effect. */ |
448 | static int | |
449 | remote_multi_process_p (struct remote_state *rs) | |
450 | { | |
901f9912 | 451 | return rs->multi_process_aware; |
82f73884 PA |
452 | } |
453 | ||
ea9c271d DJ |
454 | /* This data could be associated with a target, but we do not always |
455 | have access to the current target when we need it, so for now it is | |
456 | static. This will be fine for as long as only one target is in use | |
457 | at a time. */ | |
cf792862 | 458 | static struct remote_state *remote_state; |
ea9c271d DJ |
459 | |
460 | static struct remote_state * | |
0b83947e | 461 | get_remote_state_raw (void) |
ea9c271d | 462 | { |
cf792862 TT |
463 | return remote_state; |
464 | } | |
465 | ||
466 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
467 | return it. */ | |
468 | ||
469 | static struct remote_state * | |
470 | new_remote_state (void) | |
471 | { | |
472 | struct remote_state *result = XCNEW (struct remote_state); | |
473 | ||
474 | /* The default buffer size is unimportant; it will be expanded | |
475 | whenever a larger buffer is needed. */ | |
476 | result->buf_size = 400; | |
477 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 478 | result->remote_traceframe_number = -1; |
b73be471 | 479 | result->last_sent_signal = GDB_SIGNAL_0; |
cf792862 TT |
480 | |
481 | return result; | |
ea9c271d DJ |
482 | } |
483 | ||
484 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 485 | |
ad10f812 AC |
486 | struct packet_reg |
487 | { | |
488 | long offset; /* Offset into G packet. */ | |
489 | long regnum; /* GDB's internal register number. */ | |
490 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 491 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 492 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 493 | at present. */ |
f5656ead | 494 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 495 | at present. */ |
ad10f812 AC |
496 | }; |
497 | ||
ea9c271d | 498 | struct remote_arch_state |
d01949b6 | 499 | { |
ad10f812 AC |
500 | /* Description of the remote protocol registers. */ |
501 | long sizeof_g_packet; | |
b323314b AC |
502 | |
503 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 504 | (making an array gdbarch_num_regs in size). */ |
b323314b | 505 | struct packet_reg *regs; |
ad10f812 | 506 | |
d01949b6 AC |
507 | /* This is the size (in chars) of the first response to the ``g'' |
508 | packet. It is used as a heuristic when determining the maximum | |
509 | size of memory-read and memory-write packets. A target will | |
510 | typically only reserve a buffer large enough to hold the ``g'' | |
511 | packet. The size does not include packet overhead (headers and | |
23860348 | 512 | trailers). */ |
d01949b6 AC |
513 | long actual_register_packet_size; |
514 | ||
515 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 516 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
517 | long remote_packet_size; |
518 | }; | |
519 | ||
35b1e5cc SS |
520 | /* Utility: generate error from an incoming stub packet. */ |
521 | static void | |
522 | trace_error (char *buf) | |
523 | { | |
524 | if (*buf++ != 'E') | |
525 | return; /* not an error msg */ | |
526 | switch (*buf) | |
527 | { | |
528 | case '1': /* malformed packet error */ | |
529 | if (*++buf == '0') /* general case: */ | |
530 | error (_("remote.c: error in outgoing packet.")); | |
531 | else | |
532 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
533 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
534 | default: |
535 | error (_("Target returns error code '%s'."), buf); | |
536 | } | |
537 | } | |
538 | ||
539 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
540 | static char * | |
541 | remote_get_noisy_reply (char **buf_p, | |
542 | long *sizeof_buf) | |
543 | { | |
544 | do /* Loop on reply from remote stub. */ | |
545 | { | |
546 | char *buf; | |
a744cf53 | 547 | |
0df8b418 | 548 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
549 | getpkt (buf_p, sizeof_buf, 0); |
550 | buf = *buf_p; | |
ad91cd99 | 551 | if (buf[0] == 'E') |
35b1e5cc | 552 | trace_error (buf); |
dde08ee1 PA |
553 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
554 | { | |
555 | ULONGEST ul; | |
556 | CORE_ADDR from, to, org_to; | |
557 | char *p, *pp; | |
558 | int adjusted_size = 0; | |
559 | volatile struct gdb_exception ex; | |
560 | ||
561 | p = buf + strlen ("qRelocInsn:"); | |
562 | pp = unpack_varlen_hex (p, &ul); | |
563 | if (*pp != ';') | |
cb91c06a | 564 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
565 | from = ul; |
566 | ||
567 | p = pp + 1; | |
a9cbf802 | 568 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
569 | to = ul; |
570 | ||
571 | org_to = to; | |
572 | ||
573 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
574 | { | |
f5656ead | 575 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
dde08ee1 PA |
576 | } |
577 | if (ex.reason >= 0) | |
578 | { | |
579 | adjusted_size = to - org_to; | |
580 | ||
bba74b36 | 581 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
582 | putpkt (buf); |
583 | } | |
584 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
585 | { | |
586 | /* Propagate memory errors silently back to the target. | |
587 | The stub may have limited the range of addresses we | |
588 | can write to, for example. */ | |
589 | putpkt ("E01"); | |
590 | } | |
591 | else | |
592 | { | |
593 | /* Something unexpectedly bad happened. Be verbose so | |
594 | we can tell what, and propagate the error back to the | |
595 | stub, so it doesn't get stuck waiting for a | |
596 | response. */ | |
597 | exception_fprintf (gdb_stderr, ex, | |
598 | _("warning: relocating instruction: ")); | |
599 | putpkt ("E01"); | |
600 | } | |
601 | } | |
ad91cd99 | 602 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
603 | remote_console_output (buf + 1); /* 'O' message from stub */ |
604 | else | |
0df8b418 | 605 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
606 | } |
607 | while (1); | |
608 | } | |
3c3bea1c | 609 | |
d01949b6 AC |
610 | /* Handle for retreving the remote protocol data from gdbarch. */ |
611 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
612 | ||
ea9c271d DJ |
613 | static struct remote_arch_state * |
614 | get_remote_arch_state (void) | |
d01949b6 | 615 | { |
f5656ead | 616 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
617 | } |
618 | ||
0b83947e DJ |
619 | /* Fetch the global remote target state. */ |
620 | ||
621 | static struct remote_state * | |
622 | get_remote_state (void) | |
623 | { | |
624 | /* Make sure that the remote architecture state has been | |
625 | initialized, because doing so might reallocate rs->buf. Any | |
626 | function which calls getpkt also needs to be mindful of changes | |
627 | to rs->buf, but this call limits the number of places which run | |
628 | into trouble. */ | |
629 | get_remote_arch_state (); | |
630 | ||
631 | return get_remote_state_raw (); | |
632 | } | |
633 | ||
74ca34ce DJ |
634 | static int |
635 | compare_pnums (const void *lhs_, const void *rhs_) | |
636 | { | |
637 | const struct packet_reg * const *lhs = lhs_; | |
638 | const struct packet_reg * const *rhs = rhs_; | |
639 | ||
640 | if ((*lhs)->pnum < (*rhs)->pnum) | |
641 | return -1; | |
642 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
643 | return 0; | |
644 | else | |
645 | return 1; | |
646 | } | |
647 | ||
c21236dc PA |
648 | static int |
649 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 650 | { |
74ca34ce | 651 | int regnum, num_remote_regs, offset; |
74ca34ce | 652 | struct packet_reg **remote_regs; |
ea9c271d | 653 | |
4a22f64d | 654 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 655 | { |
c21236dc | 656 | struct packet_reg *r = ®s[regnum]; |
baef701f | 657 | |
4a22f64d | 658 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
659 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
660 | r->pnum = -1; | |
661 | else | |
662 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
663 | ||
b323314b | 664 | r->regnum = regnum; |
74ca34ce DJ |
665 | } |
666 | ||
667 | /* Define the g/G packet format as the contents of each register | |
668 | with a remote protocol number, in order of ascending protocol | |
669 | number. */ | |
670 | ||
4a22f64d | 671 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 672 | * sizeof (struct packet_reg *)); |
f57d151a | 673 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 674 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 675 | regnum++) |
c21236dc PA |
676 | if (regs[regnum].pnum != -1) |
677 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 678 | |
74ca34ce DJ |
679 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
680 | compare_pnums); | |
681 | ||
682 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
683 | { | |
684 | remote_regs[regnum]->in_g_packet = 1; | |
685 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 686 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
687 | } |
688 | ||
c21236dc PA |
689 | return offset; |
690 | } | |
691 | ||
692 | /* Given the architecture described by GDBARCH, return the remote | |
693 | protocol register's number and the register's offset in the g/G | |
694 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
695 | If the target does not have a mapping for REGNUM, return false, | |
696 | otherwise, return true. */ | |
697 | ||
698 | int | |
699 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
700 | int *pnum, int *poffset) | |
701 | { | |
702 | int sizeof_g_packet; | |
703 | struct packet_reg *regs; | |
704 | struct cleanup *old_chain; | |
705 | ||
706 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
707 | ||
708 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
709 | old_chain = make_cleanup (xfree, regs); | |
710 | ||
711 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
712 | ||
713 | *pnum = regs[regnum].pnum; | |
714 | *poffset = regs[regnum].offset; | |
715 | ||
716 | do_cleanups (old_chain); | |
717 | ||
718 | return *pnum != -1; | |
719 | } | |
720 | ||
721 | static void * | |
722 | init_remote_state (struct gdbarch *gdbarch) | |
723 | { | |
724 | struct remote_state *rs = get_remote_state_raw (); | |
725 | struct remote_arch_state *rsa; | |
726 | ||
727 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
728 | ||
729 | /* Use the architecture to build a regnum<->pnum table, which will be | |
730 | 1:1 unless a feature set specifies otherwise. */ | |
731 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
732 | gdbarch_num_regs (gdbarch), | |
733 | struct packet_reg); | |
734 | ||
74ca34ce DJ |
735 | /* Record the maximum possible size of the g packet - it may turn out |
736 | to be smaller. */ | |
c21236dc | 737 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 738 | |
0df8b418 | 739 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
740 | remote stubs have a hardwired buffer size of 400 bytes |
741 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
742 | as the maximum packet-size to ensure that the packet and an extra | |
743 | NUL character can always fit in the buffer. This stops GDB | |
744 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
745 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
746 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 747 | |
ea9c271d DJ |
748 | /* This one is filled in when a ``g'' packet is received. */ |
749 | rsa->actual_register_packet_size = 0; | |
750 | ||
751 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
752 | default, adjust the size accordingly. Remember that each byte is |
753 | encoded as two characters. 32 is the overhead for the packet | |
754 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 755 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 756 | little. */ |
ea9c271d DJ |
757 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
758 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 759 | |
ea9c271d DJ |
760 | /* Make sure that the packet buffer is plenty big enough for |
761 | this architecture. */ | |
762 | if (rs->buf_size < rsa->remote_packet_size) | |
763 | { | |
764 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 765 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 766 | } |
6d820c5c | 767 | |
ea9c271d DJ |
768 | return rsa; |
769 | } | |
770 | ||
771 | /* Return the current allowed size of a remote packet. This is | |
772 | inferred from the current architecture, and should be used to | |
773 | limit the length of outgoing packets. */ | |
774 | static long | |
775 | get_remote_packet_size (void) | |
776 | { | |
be2a5f71 | 777 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
778 | struct remote_arch_state *rsa = get_remote_arch_state (); |
779 | ||
be2a5f71 DJ |
780 | if (rs->explicit_packet_size) |
781 | return rs->explicit_packet_size; | |
782 | ||
ea9c271d | 783 | return rsa->remote_packet_size; |
d01949b6 AC |
784 | } |
785 | ||
ad10f812 | 786 | static struct packet_reg * |
ea9c271d | 787 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 788 | { |
f5656ead | 789 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
790 | return NULL; |
791 | else | |
ad10f812 | 792 | { |
ea9c271d | 793 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 794 | |
b323314b AC |
795 | gdb_assert (r->regnum == regnum); |
796 | return r; | |
ad10f812 | 797 | } |
ad10f812 AC |
798 | } |
799 | ||
800 | static struct packet_reg * | |
ea9c271d | 801 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 802 | { |
b323314b | 803 | int i; |
a744cf53 | 804 | |
f5656ead | 805 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 806 | { |
ea9c271d | 807 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 808 | |
b323314b AC |
809 | if (r->pnum == pnum) |
810 | return r; | |
ad10f812 AC |
811 | } |
812 | return NULL; | |
d01949b6 AC |
813 | } |
814 | ||
c906108c SS |
815 | static struct target_ops remote_ops; |
816 | ||
817 | static struct target_ops extended_remote_ops; | |
818 | ||
6426a772 JM |
819 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
820 | ``forever'' still use the normal timeout mechanism. This is | |
821 | currently used by the ASYNC code to guarentee that target reads | |
822 | during the initial connect always time-out. Once getpkt has been | |
823 | modified to return a timeout indication and, in turn | |
824 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 825 | this can go away. */ |
6426a772 JM |
826 | static int wait_forever_enabled_p = 1; |
827 | ||
9a7071a8 JB |
828 | /* Allow the user to specify what sequence to send to the remote |
829 | when he requests a program interruption: Although ^C is usually | |
830 | what remote systems expect (this is the default, here), it is | |
831 | sometimes preferable to send a break. On other systems such | |
832 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
833 | is required in order to interrupt the execution. */ | |
834 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
835 | const char interrupt_sequence_break[] = "BREAK"; | |
836 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 837 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
838 | { |
839 | interrupt_sequence_control_c, | |
840 | interrupt_sequence_break, | |
841 | interrupt_sequence_break_g, | |
842 | NULL | |
843 | }; | |
844 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
845 | ||
846 | static void | |
847 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
848 | struct cmd_list_element *c, | |
849 | const char *value) | |
850 | { | |
851 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
852 | fprintf_filtered (file, | |
853 | _("Send the ASCII ETX character (Ctrl-c) " | |
854 | "to the remote target to interrupt the " | |
855 | "execution of the program.\n")); | |
856 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
857 | fprintf_filtered (file, | |
858 | _("send a break signal to the remote target " | |
859 | "to interrupt the execution of the program.\n")); | |
860 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
861 | fprintf_filtered (file, | |
862 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
863 | "the remote target to interrupt the execution " | |
864 | "of Linux kernel.\n")); | |
865 | else | |
866 | internal_error (__FILE__, __LINE__, | |
867 | _("Invalid value for interrupt_sequence_mode: %s."), | |
868 | interrupt_sequence_mode); | |
869 | } | |
6426a772 | 870 | |
9a7071a8 JB |
871 | /* This boolean variable specifies whether interrupt_sequence is sent |
872 | to the remote target when gdb connects to it. | |
873 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
874 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
875 | static int interrupt_on_connect = 0; | |
c906108c | 876 | |
9a7071a8 JB |
877 | /* This variable is used to implement the "set/show remotebreak" commands. |
878 | Since these commands are now deprecated in favor of "set/show remote | |
879 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
880 | static int remote_break; |
881 | ||
9a7071a8 JB |
882 | static void |
883 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
884 | { | |
885 | if (remote_break) | |
886 | interrupt_sequence_mode = interrupt_sequence_break; | |
887 | else | |
888 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
889 | } | |
890 | ||
891 | static void | |
892 | show_remotebreak (struct ui_file *file, int from_tty, | |
893 | struct cmd_list_element *c, | |
894 | const char *value) | |
895 | { | |
896 | } | |
897 | ||
c906108c SS |
898 | /* This variable sets the number of bits in an address that are to be |
899 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 900 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
901 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
902 | initial implementation of remote.c restricted the address sent in | |
903 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
904 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
905 | address was never sent. Since fixing this bug may cause a break in | |
906 | some remote targets this variable is principly provided to | |
23860348 | 907 | facilitate backward compatibility. */ |
c906108c | 908 | |
883b9c6c | 909 | static unsigned int remote_address_size; |
c906108c | 910 | |
75c99385 PA |
911 | /* Temporary to track who currently owns the terminal. See |
912 | remote_terminal_* for more details. */ | |
6426a772 JM |
913 | |
914 | static int remote_async_terminal_ours_p; | |
915 | ||
2d717e4f DJ |
916 | /* The executable file to use for "run" on the remote side. */ |
917 | ||
918 | static char *remote_exec_file = ""; | |
919 | ||
11cf8741 | 920 | \f |
11cf8741 | 921 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
922 | memory read/write packet. MIN (rsa->remote_packet_size, |
923 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 924 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
925 | (speed up transfers). The variables ``preferred_*'' (the user |
926 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 927 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
928 | |
929 | struct memory_packet_config | |
930 | { | |
931 | char *name; | |
932 | long size; | |
933 | int fixed_p; | |
934 | }; | |
935 | ||
936 | /* Compute the current size of a read/write packet. Since this makes | |
937 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
938 | ||
939 | static long | |
940 | get_memory_packet_size (struct memory_packet_config *config) | |
941 | { | |
d01949b6 | 942 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
943 | struct remote_arch_state *rsa = get_remote_arch_state (); |
944 | ||
11cf8741 JM |
945 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
946 | law?) that some hosts don't cope very well with large alloca() | |
947 | calls. Eventually the alloca() code will be replaced by calls to | |
948 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 949 | be lifted or removed. */ |
11cf8741 JM |
950 | #ifndef MAX_REMOTE_PACKET_SIZE |
951 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
952 | #endif | |
3de11b2e | 953 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 954 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 955 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
956 | #endif |
957 | long what_they_get; | |
958 | if (config->fixed_p) | |
959 | { | |
960 | if (config->size <= 0) | |
961 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
962 | else | |
963 | what_they_get = config->size; | |
964 | } | |
965 | else | |
966 | { | |
ea9c271d | 967 | what_they_get = get_remote_packet_size (); |
23860348 | 968 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
969 | if (config->size > 0 |
970 | && what_they_get > config->size) | |
971 | what_they_get = config->size; | |
be2a5f71 DJ |
972 | |
973 | /* Limit it to the size of the targets ``g'' response unless we have | |
974 | permission from the stub to use a larger packet size. */ | |
975 | if (rs->explicit_packet_size == 0 | |
976 | && rsa->actual_register_packet_size > 0 | |
977 | && what_they_get > rsa->actual_register_packet_size) | |
978 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
979 | } |
980 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
981 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
982 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
983 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
984 | |
985 | /* Make sure there is room in the global buffer for this packet | |
986 | (including its trailing NUL byte). */ | |
987 | if (rs->buf_size < what_they_get + 1) | |
988 | { | |
989 | rs->buf_size = 2 * what_they_get; | |
990 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
991 | } | |
992 | ||
11cf8741 JM |
993 | return what_they_get; |
994 | } | |
995 | ||
0df8b418 | 996 | /* Update the size of a read/write packet. If they user wants |
23860348 | 997 | something really big then do a sanity check. */ |
11cf8741 JM |
998 | |
999 | static void | |
1000 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1001 | { | |
1002 | int fixed_p = config->fixed_p; | |
1003 | long size = config->size; | |
a744cf53 | 1004 | |
11cf8741 | 1005 | if (args == NULL) |
8a3fe4f8 | 1006 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1007 | else if (strcmp (args, "hard") == 0 |
1008 | || strcmp (args, "fixed") == 0) | |
1009 | fixed_p = 1; | |
1010 | else if (strcmp (args, "soft") == 0 | |
1011 | || strcmp (args, "limit") == 0) | |
1012 | fixed_p = 0; | |
1013 | else | |
1014 | { | |
1015 | char *end; | |
a744cf53 | 1016 | |
11cf8741 JM |
1017 | size = strtoul (args, &end, 0); |
1018 | if (args == end) | |
8a3fe4f8 | 1019 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
1020 | #if 0 |
1021 | /* Instead of explicitly capping the size of a packet to | |
1022 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
1023 | instead allowed to set the size to something arbitrarily | |
23860348 | 1024 | large. */ |
11cf8741 | 1025 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 1026 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
1027 | #endif |
1028 | } | |
23860348 | 1029 | /* Extra checks? */ |
11cf8741 JM |
1030 | if (fixed_p && !config->fixed_p) |
1031 | { | |
e2e0b3e5 AC |
1032 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1033 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1034 | config->name, size)) |
8a3fe4f8 | 1035 | error (_("Packet size not changed.")); |
11cf8741 | 1036 | } |
23860348 | 1037 | /* Update the config. */ |
11cf8741 JM |
1038 | config->fixed_p = fixed_p; |
1039 | config->size = size; | |
1040 | } | |
1041 | ||
1042 | static void | |
1043 | show_memory_packet_size (struct memory_packet_config *config) | |
1044 | { | |
a3f17187 | 1045 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1046 | if (config->fixed_p) |
a3f17187 | 1047 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1048 | get_memory_packet_size (config)); |
1049 | else | |
a3f17187 | 1050 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1051 | get_memory_packet_size (config)); |
1052 | } | |
1053 | ||
1054 | static struct memory_packet_config memory_write_packet_config = | |
1055 | { | |
1056 | "memory-write-packet-size", | |
1057 | }; | |
1058 | ||
1059 | static void | |
1060 | set_memory_write_packet_size (char *args, int from_tty) | |
1061 | { | |
1062 | set_memory_packet_size (args, &memory_write_packet_config); | |
1063 | } | |
1064 | ||
1065 | static void | |
1066 | show_memory_write_packet_size (char *args, int from_tty) | |
1067 | { | |
1068 | show_memory_packet_size (&memory_write_packet_config); | |
1069 | } | |
1070 | ||
1071 | static long | |
1072 | get_memory_write_packet_size (void) | |
1073 | { | |
1074 | return get_memory_packet_size (&memory_write_packet_config); | |
1075 | } | |
1076 | ||
1077 | static struct memory_packet_config memory_read_packet_config = | |
1078 | { | |
1079 | "memory-read-packet-size", | |
1080 | }; | |
1081 | ||
1082 | static void | |
1083 | set_memory_read_packet_size (char *args, int from_tty) | |
1084 | { | |
1085 | set_memory_packet_size (args, &memory_read_packet_config); | |
1086 | } | |
1087 | ||
1088 | static void | |
1089 | show_memory_read_packet_size (char *args, int from_tty) | |
1090 | { | |
1091 | show_memory_packet_size (&memory_read_packet_config); | |
1092 | } | |
1093 | ||
1094 | static long | |
1095 | get_memory_read_packet_size (void) | |
1096 | { | |
1097 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1098 | |
11cf8741 JM |
1099 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1100 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1101 | increased beyond this. */ |
1102 | if (size > get_remote_packet_size ()) | |
1103 | size = get_remote_packet_size (); | |
11cf8741 JM |
1104 | return size; |
1105 | } | |
1106 | ||
11cf8741 | 1107 | \f |
5a2468f5 | 1108 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1109 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1110 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1111 | |
1112 | enum packet_support | |
1113 | { | |
1114 | PACKET_SUPPORT_UNKNOWN = 0, | |
1115 | PACKET_ENABLE, | |
1116 | PACKET_DISABLE | |
1117 | }; | |
1118 | ||
5a2468f5 JM |
1119 | struct packet_config |
1120 | { | |
bb572ddd DJ |
1121 | const char *name; |
1122 | const char *title; | |
7f19b9a2 | 1123 | enum auto_boolean detect; |
5a2468f5 JM |
1124 | enum packet_support support; |
1125 | }; | |
1126 | ||
d471ea57 | 1127 | /* Analyze a packet's return value and update the packet config |
23860348 | 1128 | accordingly. */ |
d471ea57 AC |
1129 | |
1130 | enum packet_result | |
1131 | { | |
1132 | PACKET_ERROR, | |
1133 | PACKET_OK, | |
1134 | PACKET_UNKNOWN | |
1135 | }; | |
1136 | ||
5a2468f5 | 1137 | static void |
d471ea57 | 1138 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1139 | { |
d471ea57 AC |
1140 | switch (config->detect) |
1141 | { | |
7f19b9a2 | 1142 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1143 | config->support = PACKET_ENABLE; |
1144 | break; | |
7f19b9a2 | 1145 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1146 | config->support = PACKET_DISABLE; |
1147 | break; | |
7f19b9a2 | 1148 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1149 | config->support = PACKET_SUPPORT_UNKNOWN; |
1150 | break; | |
1151 | } | |
5a2468f5 JM |
1152 | } |
1153 | ||
1154 | static void | |
fba45db2 | 1155 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1156 | { |
1157 | char *support = "internal-error"; | |
a744cf53 | 1158 | |
5a2468f5 JM |
1159 | switch (config->support) |
1160 | { | |
1161 | case PACKET_ENABLE: | |
1162 | support = "enabled"; | |
1163 | break; | |
1164 | case PACKET_DISABLE: | |
1165 | support = "disabled"; | |
1166 | break; | |
1167 | case PACKET_SUPPORT_UNKNOWN: | |
1168 | support = "unknown"; | |
1169 | break; | |
1170 | } | |
1171 | switch (config->detect) | |
1172 | { | |
7f19b9a2 | 1173 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1174 | printf_filtered (_("Support for the `%s' packet " |
1175 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1176 | config->name, support); |
5a2468f5 | 1177 | break; |
7f19b9a2 AC |
1178 | case AUTO_BOOLEAN_TRUE: |
1179 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1180 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1181 | config->name, support); | |
8e248173 | 1182 | break; |
5a2468f5 JM |
1183 | } |
1184 | } | |
1185 | ||
1186 | static void | |
bb572ddd DJ |
1187 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1188 | const char *title, int legacy) | |
d471ea57 | 1189 | { |
5a2468f5 JM |
1190 | char *set_doc; |
1191 | char *show_doc; | |
d471ea57 | 1192 | char *cmd_name; |
3ed07be4 | 1193 | |
5a2468f5 JM |
1194 | config->name = name; |
1195 | config->title = title; | |
7f19b9a2 | 1196 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1197 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1198 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1199 | name, title); | |
3e43a32a MS |
1200 | show_doc = xstrprintf ("Show current use of remote " |
1201 | "protocol `%s' (%s) packet", | |
b435e160 | 1202 | name, title); |
d471ea57 | 1203 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1204 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1205 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1206 | &config->detect, set_doc, |
1207 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1208 | set_remote_protocol_packet_cmd, |
1209 | show_remote_protocol_packet_cmd, | |
1210 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1211 | /* The command code copies the documentation strings. */ |
1212 | xfree (set_doc); | |
1213 | xfree (show_doc); | |
23860348 | 1214 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1215 | if (legacy) |
1216 | { | |
1217 | char *legacy_name; | |
a744cf53 | 1218 | |
b435e160 | 1219 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1220 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1221 | &remote_set_cmdlist); |
d471ea57 | 1222 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1223 | &remote_show_cmdlist); |
d471ea57 | 1224 | } |
5a2468f5 JM |
1225 | } |
1226 | ||
d471ea57 | 1227 | static enum packet_result |
a76d924d | 1228 | packet_check_result (const char *buf) |
5a2468f5 | 1229 | { |
d471ea57 | 1230 | if (buf[0] != '\0') |
5a2468f5 | 1231 | { |
d471ea57 | 1232 | /* The stub recognized the packet request. Check that the |
23860348 | 1233 | operation succeeded. */ |
a76d924d DJ |
1234 | if (buf[0] == 'E' |
1235 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1236 | && buf[3] == '\0') | |
1237 | /* "Enn" - definitly an error. */ | |
1238 | return PACKET_ERROR; | |
1239 | ||
1240 | /* Always treat "E." as an error. This will be used for | |
1241 | more verbose error messages, such as E.memtypes. */ | |
1242 | if (buf[0] == 'E' && buf[1] == '.') | |
1243 | return PACKET_ERROR; | |
1244 | ||
1245 | /* The packet may or may not be OK. Just assume it is. */ | |
1246 | return PACKET_OK; | |
1247 | } | |
1248 | else | |
1249 | /* The stub does not support the packet. */ | |
1250 | return PACKET_UNKNOWN; | |
1251 | } | |
1252 | ||
1253 | static enum packet_result | |
1254 | packet_ok (const char *buf, struct packet_config *config) | |
1255 | { | |
1256 | enum packet_result result; | |
1257 | ||
1258 | result = packet_check_result (buf); | |
1259 | switch (result) | |
1260 | { | |
1261 | case PACKET_OK: | |
1262 | case PACKET_ERROR: | |
1263 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1264 | switch (config->support) |
1265 | { | |
1266 | case PACKET_SUPPORT_UNKNOWN: | |
1267 | if (remote_debug) | |
1268 | fprintf_unfiltered (gdb_stdlog, | |
1269 | "Packet %s (%s) is supported\n", | |
1270 | config->name, config->title); | |
1271 | config->support = PACKET_ENABLE; | |
1272 | break; | |
1273 | case PACKET_DISABLE: | |
8e65ff28 | 1274 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1275 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1276 | break; |
1277 | case PACKET_ENABLE: | |
1278 | break; | |
1279 | } | |
a76d924d DJ |
1280 | break; |
1281 | case PACKET_UNKNOWN: | |
23860348 | 1282 | /* The stub does not support the packet. */ |
d471ea57 AC |
1283 | switch (config->support) |
1284 | { | |
1285 | case PACKET_ENABLE: | |
7f19b9a2 | 1286 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1287 | /* If the stub previously indicated that the packet was |
23860348 | 1288 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1289 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1290 | config->name, config->title); |
1291 | else | |
23860348 | 1292 | /* The user set it wrong. */ |
8a3fe4f8 | 1293 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1294 | config->name, config->title); |
1295 | break; | |
1296 | case PACKET_SUPPORT_UNKNOWN: | |
1297 | if (remote_debug) | |
1298 | fprintf_unfiltered (gdb_stdlog, | |
1299 | "Packet %s (%s) is NOT supported\n", | |
1300 | config->name, config->title); | |
1301 | config->support = PACKET_DISABLE; | |
1302 | break; | |
1303 | case PACKET_DISABLE: | |
1304 | break; | |
1305 | } | |
a76d924d | 1306 | break; |
5a2468f5 | 1307 | } |
a76d924d DJ |
1308 | |
1309 | return result; | |
5a2468f5 JM |
1310 | } |
1311 | ||
444abaca DJ |
1312 | enum { |
1313 | PACKET_vCont = 0, | |
1314 | PACKET_X, | |
1315 | PACKET_qSymbol, | |
1316 | PACKET_P, | |
1317 | PACKET_p, | |
1318 | PACKET_Z0, | |
1319 | PACKET_Z1, | |
1320 | PACKET_Z2, | |
1321 | PACKET_Z3, | |
1322 | PACKET_Z4, | |
a6b151f1 DJ |
1323 | PACKET_vFile_open, |
1324 | PACKET_vFile_pread, | |
1325 | PACKET_vFile_pwrite, | |
1326 | PACKET_vFile_close, | |
1327 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1328 | PACKET_vFile_readlink, |
0876f84a | 1329 | PACKET_qXfer_auxv, |
23181151 | 1330 | PACKET_qXfer_features, |
cfa9d6d9 | 1331 | PACKET_qXfer_libraries, |
2268b414 | 1332 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1333 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1334 | PACKET_qXfer_spu_read, |
1335 | PACKET_qXfer_spu_write, | |
07e059b5 | 1336 | PACKET_qXfer_osdata, |
dc146f7c | 1337 | PACKET_qXfer_threads, |
0fb4aa4b | 1338 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1339 | PACKET_qXfer_traceframe_info, |
169081d0 | 1340 | PACKET_qXfer_uib, |
711e434b | 1341 | PACKET_qGetTIBAddr, |
444abaca | 1342 | PACKET_qGetTLSAddr, |
be2a5f71 | 1343 | PACKET_qSupported, |
bd3eecc3 | 1344 | PACKET_qTStatus, |
89be2091 | 1345 | PACKET_QPassSignals, |
9b224c5e | 1346 | PACKET_QProgramSignals, |
08388c79 | 1347 | PACKET_qSearch_memory, |
2d717e4f DJ |
1348 | PACKET_vAttach, |
1349 | PACKET_vRun, | |
a6f3e723 | 1350 | PACKET_QStartNoAckMode, |
82f73884 | 1351 | PACKET_vKill, |
4aa995e1 PA |
1352 | PACKET_qXfer_siginfo_read, |
1353 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1354 | PACKET_qAttached, |
782b2b07 | 1355 | PACKET_ConditionalTracepoints, |
3788aec7 | 1356 | PACKET_ConditionalBreakpoints, |
d3ce09f5 | 1357 | PACKET_BreakpointCommands, |
7a697b8d | 1358 | PACKET_FastTracepoints, |
0fb4aa4b | 1359 | PACKET_StaticTracepoints, |
1e4d1764 | 1360 | PACKET_InstallInTrace, |
40ab02ce MS |
1361 | PACKET_bc, |
1362 | PACKET_bs, | |
409873ef | 1363 | PACKET_TracepointSource, |
d914c394 | 1364 | PACKET_QAllow, |
78d85199 | 1365 | PACKET_qXfer_fdpic, |
03583c20 | 1366 | PACKET_QDisableRandomization, |
d1feda86 | 1367 | PACKET_QAgent, |
f6f899bf | 1368 | PACKET_QTBuffer_size, |
9accd112 MM |
1369 | PACKET_Qbtrace_off, |
1370 | PACKET_Qbtrace_bts, | |
1371 | PACKET_qXfer_btrace, | |
444abaca DJ |
1372 | PACKET_MAX |
1373 | }; | |
506fb367 | 1374 | |
444abaca | 1375 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1376 | |
1377 | static void | |
444abaca DJ |
1378 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1379 | struct cmd_list_element *c) | |
dc8acb97 | 1380 | { |
444abaca | 1381 | struct packet_config *packet; |
dc8acb97 | 1382 | |
444abaca DJ |
1383 | for (packet = remote_protocol_packets; |
1384 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1385 | packet++) | |
1386 | { | |
1387 | if (&packet->detect == c->var) | |
1388 | { | |
1389 | update_packet_config (packet); | |
1390 | return; | |
1391 | } | |
1392 | } | |
9b20d036 | 1393 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1394 | c->name); |
dc8acb97 MS |
1395 | } |
1396 | ||
5a2468f5 | 1397 | static void |
444abaca DJ |
1398 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1399 | struct cmd_list_element *c, | |
1400 | const char *value) | |
5a2468f5 | 1401 | { |
444abaca | 1402 | struct packet_config *packet; |
5a2468f5 | 1403 | |
444abaca DJ |
1404 | for (packet = remote_protocol_packets; |
1405 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1406 | packet++) | |
1407 | { | |
1408 | if (&packet->detect == c->var) | |
1409 | { | |
1410 | show_packet_config_cmd (packet); | |
1411 | return; | |
1412 | } | |
1413 | } | |
9b20d036 | 1414 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1415 | c->name); |
5a2468f5 JM |
1416 | } |
1417 | ||
d471ea57 AC |
1418 | /* Should we try one of the 'Z' requests? */ |
1419 | ||
1420 | enum Z_packet_type | |
1421 | { | |
1422 | Z_PACKET_SOFTWARE_BP, | |
1423 | Z_PACKET_HARDWARE_BP, | |
1424 | Z_PACKET_WRITE_WP, | |
1425 | Z_PACKET_READ_WP, | |
1426 | Z_PACKET_ACCESS_WP, | |
1427 | NR_Z_PACKET_TYPES | |
1428 | }; | |
96baa820 | 1429 | |
d471ea57 | 1430 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1431 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1432 | |
7f19b9a2 | 1433 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1434 | |
1435 | static void | |
fba45db2 KB |
1436 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1437 | struct cmd_list_element *c) | |
96baa820 | 1438 | { |
d471ea57 | 1439 | int i; |
a744cf53 | 1440 | |
d471ea57 AC |
1441 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1442 | { | |
444abaca DJ |
1443 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1444 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1445 | } |
96baa820 JM |
1446 | } |
1447 | ||
1448 | static void | |
08546159 AC |
1449 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1450 | struct cmd_list_element *c, | |
1451 | const char *value) | |
96baa820 | 1452 | { |
d471ea57 | 1453 | int i; |
a744cf53 | 1454 | |
d471ea57 AC |
1455 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1456 | { | |
444abaca | 1457 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1458 | } |
96baa820 JM |
1459 | } |
1460 | ||
23860348 | 1461 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1462 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1463 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1464 | |
74531fed PA |
1465 | \f |
1466 | /* Asynchronous signal handle registered as event loop source for | |
1467 | when we have pending events ready to be passed to the core. */ | |
1468 | ||
1469 | static struct async_event_handler *remote_async_inferior_event_token; | |
1470 | ||
c906108c SS |
1471 | \f |
1472 | ||
79d7f229 PA |
1473 | static ptid_t magic_null_ptid; |
1474 | static ptid_t not_sent_ptid; | |
1475 | static ptid_t any_thread_ptid; | |
1476 | ||
0b16c5cf PA |
1477 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1478 | detach instead of killing it when bailing out). */ | |
1479 | ||
1480 | static int | |
1481 | remote_query_attached (int pid) | |
1482 | { | |
1483 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1484 | size_t size = get_remote_packet_size (); |
0b16c5cf PA |
1485 | |
1486 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1487 | return 0; | |
1488 | ||
1489 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1490 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1491 | else |
bba74b36 | 1492 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1493 | |
1494 | putpkt (rs->buf); | |
1495 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1496 | ||
1497 | switch (packet_ok (rs->buf, | |
1554e9be | 1498 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1499 | { |
1500 | case PACKET_OK: | |
1501 | if (strcmp (rs->buf, "1") == 0) | |
1502 | return 1; | |
1503 | break; | |
1504 | case PACKET_ERROR: | |
1505 | warning (_("Remote failure reply: %s"), rs->buf); | |
1506 | break; | |
1507 | case PACKET_UNKNOWN: | |
1508 | break; | |
1509 | } | |
1510 | ||
1511 | return 0; | |
1512 | } | |
1513 | ||
49c62f2e PA |
1514 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1515 | has been invented by GDB, instead of reported by the target. Since | |
1516 | we can be connected to a remote system before before knowing about | |
1517 | any inferior, mark the target with execution when we find the first | |
1518 | inferior. If ATTACHED is 1, then we had just attached to this | |
1519 | inferior. If it is 0, then we just created this inferior. If it | |
1520 | is -1, then try querying the remote stub to find out if it had | |
1521 | attached to the inferior or not. */ | |
1941c569 PA |
1522 | |
1523 | static struct inferior * | |
49c62f2e | 1524 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1525 | { |
1941c569 PA |
1526 | struct inferior *inf; |
1527 | ||
0b16c5cf PA |
1528 | /* Check whether this process we're learning about is to be |
1529 | considered attached, or if is to be considered to have been | |
1530 | spawned by the stub. */ | |
1531 | if (attached == -1) | |
1532 | attached = remote_query_attached (pid); | |
1533 | ||
f5656ead | 1534 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1535 | { |
1536 | /* If the target shares code across all inferiors, then every | |
1537 | attach adds a new inferior. */ | |
1538 | inf = add_inferior (pid); | |
1539 | ||
1540 | /* ... and every inferior is bound to the same program space. | |
1541 | However, each inferior may still have its own address | |
1542 | space. */ | |
1543 | inf->aspace = maybe_new_address_space (); | |
1544 | inf->pspace = current_program_space; | |
1545 | } | |
1546 | else | |
1547 | { | |
1548 | /* In the traditional debugging scenario, there's a 1-1 match | |
1549 | between program/address spaces. We simply bind the inferior | |
1550 | to the program space's address space. */ | |
1551 | inf = current_inferior (); | |
1552 | inferior_appeared (inf, pid); | |
1553 | } | |
1941c569 | 1554 | |
0b16c5cf | 1555 | inf->attach_flag = attached; |
49c62f2e | 1556 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1557 | |
1941c569 PA |
1558 | return inf; |
1559 | } | |
1560 | ||
1561 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1562 | according to RUNNING. */ | |
1563 | ||
c906108c | 1564 | static void |
1941c569 | 1565 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1566 | { |
1941c569 PA |
1567 | add_thread (ptid); |
1568 | ||
1569 | set_executing (ptid, running); | |
1570 | set_running (ptid, running); | |
1571 | } | |
1572 | ||
1573 | /* Come here when we learn about a thread id from the remote target. | |
1574 | It may be the first time we hear about such thread, so take the | |
1575 | opportunity to add it to GDB's thread list. In case this is the | |
1576 | first time we're noticing its corresponding inferior, add it to | |
1577 | GDB's inferior list as well. */ | |
1578 | ||
1579 | static void | |
1580 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1581 | { | |
c906108c SS |
1582 | /* If this is a new thread, add it to GDB's thread list. |
1583 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1584 | |
1585 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1586 | { | |
1587 | /* We're seeing an event on a thread id we knew had exited. | |
1588 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1589 | remote_add_thread (currthread, running); |
82f73884 PA |
1590 | return; |
1591 | } | |
1592 | ||
79d7f229 | 1593 | if (!in_thread_list (currthread)) |
c0a2216e | 1594 | { |
1941c569 | 1595 | struct inferior *inf = NULL; |
bad34192 | 1596 | int pid = ptid_get_pid (currthread); |
1941c569 | 1597 | |
bad34192 PA |
1598 | if (ptid_is_pid (inferior_ptid) |
1599 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1600 | { |
1601 | /* inferior_ptid has no thread member yet. This can happen | |
1602 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1603 | stub doesn't support qC. This is the first stop reported | |
1604 | after an attach, so this is the main thread. Update the | |
1605 | ptid in the thread list. */ | |
bad34192 PA |
1606 | if (in_thread_list (pid_to_ptid (pid))) |
1607 | thread_change_ptid (inferior_ptid, currthread); | |
1608 | else | |
1609 | { | |
1610 | remote_add_thread (currthread, running); | |
1611 | inferior_ptid = currthread; | |
1612 | } | |
dc146f7c | 1613 | return; |
c0a2216e | 1614 | } |
82f73884 PA |
1615 | |
1616 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1617 | { |
1618 | /* inferior_ptid is not set yet. This can happen with the | |
1619 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1620 | doesn't support qC. This is the first stop reported | |
1621 | after an attach, so this is the main thread. Update the | |
1622 | ptid in the thread list. */ | |
dc146f7c | 1623 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1624 | return; |
c0a2216e | 1625 | } |
82f73884 | 1626 | |
29c87f7f PA |
1627 | /* When connecting to a target remote, or to a target |
1628 | extended-remote which already was debugging an inferior, we | |
1629 | may not know about it yet. Add it before adding its child | |
1630 | thread, so notifications are emitted in a sensible order. */ | |
1631 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1632 | { |
1633 | struct remote_state *rs = get_remote_state (); | |
1634 | int fake_pid_p = !remote_multi_process_p (rs); | |
1635 | ||
1636 | inf = remote_add_inferior (fake_pid_p, | |
1637 | ptid_get_pid (currthread), -1); | |
1638 | } | |
29c87f7f | 1639 | |
82f73884 | 1640 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1641 | remote_add_thread (currthread, running); |
1642 | ||
1643 | /* If we found a new inferior, let the common code do whatever | |
1644 | it needs to with it (e.g., read shared libraries, insert | |
1645 | breakpoints). */ | |
1646 | if (inf != NULL) | |
1647 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1648 | } |
c906108c SS |
1649 | } |
1650 | ||
dc146f7c VP |
1651 | /* Return the private thread data, creating it if necessary. */ |
1652 | ||
70221824 | 1653 | static struct private_thread_info * |
dc146f7c VP |
1654 | demand_private_info (ptid_t ptid) |
1655 | { | |
1656 | struct thread_info *info = find_thread_ptid (ptid); | |
1657 | ||
1658 | gdb_assert (info); | |
1659 | ||
1660 | if (!info->private) | |
1661 | { | |
1662 | info->private = xmalloc (sizeof (*(info->private))); | |
1663 | info->private_dtor = free_private_thread_info; | |
1664 | info->private->core = -1; | |
1665 | info->private->extra = 0; | |
1666 | } | |
1667 | ||
1668 | return info->private; | |
1669 | } | |
1670 | ||
74531fed PA |
1671 | /* Call this function as a result of |
1672 | 1) A halt indication (T packet) containing a thread id | |
1673 | 2) A direct query of currthread | |
0df8b418 | 1674 | 3) Successful execution of set thread */ |
74531fed PA |
1675 | |
1676 | static void | |
47f8a51d | 1677 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1678 | { |
47f8a51d | 1679 | rs->general_thread = currthread; |
74531fed PA |
1680 | } |
1681 | ||
89be2091 DJ |
1682 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1683 | it can simply pass through to the inferior without reporting. */ | |
1684 | ||
1685 | static void | |
2455069d | 1686 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1687 | { |
1688 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1689 | { | |
1690 | char *pass_packet, *p; | |
89be2091 | 1691 | int count = 0, i; |
747dc59d | 1692 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1693 | |
1694 | gdb_assert (numsigs < 256); | |
1695 | for (i = 0; i < numsigs; i++) | |
1696 | { | |
2455069d | 1697 | if (pass_signals[i]) |
89be2091 DJ |
1698 | count++; |
1699 | } | |
1700 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1701 | strcpy (pass_packet, "QPassSignals:"); | |
1702 | p = pass_packet + strlen (pass_packet); | |
1703 | for (i = 0; i < numsigs; i++) | |
1704 | { | |
2455069d | 1705 | if (pass_signals[i]) |
89be2091 DJ |
1706 | { |
1707 | if (i >= 16) | |
1708 | *p++ = tohex (i >> 4); | |
1709 | *p++ = tohex (i & 15); | |
1710 | if (count) | |
1711 | *p++ = ';'; | |
1712 | else | |
1713 | break; | |
1714 | count--; | |
1715 | } | |
1716 | } | |
1717 | *p = 0; | |
747dc59d | 1718 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1719 | { |
89be2091 DJ |
1720 | char *buf = rs->buf; |
1721 | ||
1722 | putpkt (pass_packet); | |
1723 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1724 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
747dc59d TT |
1725 | if (rs->last_pass_packet) |
1726 | xfree (rs->last_pass_packet); | |
1727 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1728 | } |
1729 | else | |
1730 | xfree (pass_packet); | |
1731 | } | |
1732 | } | |
1733 | ||
9b224c5e PA |
1734 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1735 | signals it should pass through to the inferior when detaching. */ | |
1736 | ||
1737 | static void | |
1738 | remote_program_signals (int numsigs, unsigned char *signals) | |
1739 | { | |
1740 | if (remote_protocol_packets[PACKET_QProgramSignals].support != PACKET_DISABLE) | |
1741 | { | |
1742 | char *packet, *p; | |
1743 | int count = 0, i; | |
5e4a05c4 | 1744 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1745 | |
1746 | gdb_assert (numsigs < 256); | |
1747 | for (i = 0; i < numsigs; i++) | |
1748 | { | |
1749 | if (signals[i]) | |
1750 | count++; | |
1751 | } | |
1752 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1753 | strcpy (packet, "QProgramSignals:"); | |
1754 | p = packet + strlen (packet); | |
1755 | for (i = 0; i < numsigs; i++) | |
1756 | { | |
1757 | if (signal_pass_state (i)) | |
1758 | { | |
1759 | if (i >= 16) | |
1760 | *p++ = tohex (i >> 4); | |
1761 | *p++ = tohex (i & 15); | |
1762 | if (count) | |
1763 | *p++ = ';'; | |
1764 | else | |
1765 | break; | |
1766 | count--; | |
1767 | } | |
1768 | } | |
1769 | *p = 0; | |
5e4a05c4 TT |
1770 | if (!rs->last_program_signals_packet |
1771 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1772 | { |
9b224c5e PA |
1773 | char *buf = rs->buf; |
1774 | ||
1775 | putpkt (packet); | |
1776 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1777 | packet_ok (buf, &remote_protocol_packets[PACKET_QProgramSignals]); | |
5e4a05c4 TT |
1778 | xfree (rs->last_program_signals_packet); |
1779 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1780 | } |
1781 | else | |
1782 | xfree (packet); | |
1783 | } | |
1784 | } | |
1785 | ||
79d7f229 PA |
1786 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1787 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1788 | thread. If GEN is set, set the general thread, if not, then set | |
1789 | the step/continue thread. */ | |
c906108c | 1790 | static void |
79d7f229 | 1791 | set_thread (struct ptid ptid, int gen) |
c906108c | 1792 | { |
d01949b6 | 1793 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1794 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1795 | char *buf = rs->buf; |
79d7f229 | 1796 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1797 | |
79d7f229 | 1798 | if (ptid_equal (state, ptid)) |
c906108c SS |
1799 | return; |
1800 | ||
79d7f229 PA |
1801 | *buf++ = 'H'; |
1802 | *buf++ = gen ? 'g' : 'c'; | |
1803 | if (ptid_equal (ptid, magic_null_ptid)) | |
1804 | xsnprintf (buf, endbuf - buf, "0"); | |
1805 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1806 | xsnprintf (buf, endbuf - buf, "0"); | |
1807 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1808 | xsnprintf (buf, endbuf - buf, "-1"); | |
1809 | else | |
82f73884 | 1810 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1811 | putpkt (rs->buf); |
6d820c5c | 1812 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1813 | if (gen) |
47f8a51d | 1814 | rs->general_thread = ptid; |
c906108c | 1815 | else |
47f8a51d | 1816 | rs->continue_thread = ptid; |
c906108c | 1817 | } |
79d7f229 PA |
1818 | |
1819 | static void | |
1820 | set_general_thread (struct ptid ptid) | |
1821 | { | |
1822 | set_thread (ptid, 1); | |
1823 | } | |
1824 | ||
1825 | static void | |
1826 | set_continue_thread (struct ptid ptid) | |
1827 | { | |
1828 | set_thread (ptid, 0); | |
1829 | } | |
1830 | ||
3c9c4b83 PA |
1831 | /* Change the remote current process. Which thread within the process |
1832 | ends up selected isn't important, as long as it is the same process | |
1833 | as what INFERIOR_PTID points to. | |
1834 | ||
1835 | This comes from that fact that there is no explicit notion of | |
1836 | "selected process" in the protocol. The selected process for | |
1837 | general operations is the process the selected general thread | |
1838 | belongs to. */ | |
1839 | ||
1840 | static void | |
1841 | set_general_process (void) | |
1842 | { | |
1843 | struct remote_state *rs = get_remote_state (); | |
1844 | ||
1845 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1846 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1847 | return; |
1848 | ||
1849 | /* We only need to change the remote current thread if it's pointing | |
1850 | at some other process. */ | |
47f8a51d | 1851 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1852 | set_general_thread (inferior_ptid); |
1853 | } | |
1854 | ||
c906108c | 1855 | \f |
79d7f229 PA |
1856 | /* Return nonzero if the thread PTID is still alive on the remote |
1857 | system. */ | |
c906108c SS |
1858 | |
1859 | static int | |
28439f5e | 1860 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1861 | { |
6d820c5c | 1862 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1863 | char *p, *endp; |
c906108c | 1864 | |
c0a2216e PA |
1865 | if (ptid_equal (ptid, magic_null_ptid)) |
1866 | /* The main thread is always alive. */ | |
1867 | return 1; | |
1868 | ||
1869 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1870 | /* The main thread is always alive. This can happen after a | |
1871 | vAttach, if the remote side doesn't support | |
1872 | multi-threading. */ | |
1873 | return 1; | |
1874 | ||
82f73884 PA |
1875 | p = rs->buf; |
1876 | endp = rs->buf + get_remote_packet_size (); | |
1877 | ||
1878 | *p++ = 'T'; | |
1879 | write_ptid (p, endp, ptid); | |
1880 | ||
2e9f7625 | 1881 | putpkt (rs->buf); |
6d820c5c | 1882 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1883 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1884 | } |
1885 | ||
1886 | /* About these extended threadlist and threadinfo packets. They are | |
1887 | variable length packets but, the fields within them are often fixed | |
1888 | length. They are redundent enough to send over UDP as is the | |
1889 | remote protocol in general. There is a matching unit test module | |
1890 | in libstub. */ | |
1891 | ||
23860348 | 1892 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1893 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1894 | changable. */ |
cce74817 JM |
1895 | |
1896 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1897 | Plan to fix this. */ |
cce74817 | 1898 | |
23860348 | 1899 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1900 | |
9d1f7ab2 | 1901 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1902 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1903 | |
1904 | struct gdb_ext_thread_info | |
c5aa993b | 1905 | { |
23860348 | 1906 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1907 | int active; /* Has state interesting to GDB? |
23860348 | 1908 | regs, stack. */ |
2bc416ba | 1909 | char display[256]; /* Brief state display, name, |
cedea757 | 1910 | blocked/suspended. */ |
23860348 | 1911 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1912 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1913 | whatever. */ |
c5aa993b | 1914 | }; |
cce74817 JM |
1915 | |
1916 | /* The volume of remote transfers can be limited by submitting | |
1917 | a mask containing bits specifying the desired information. | |
1918 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1919 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1920 | |
1921 | #define TAG_THREADID 1 | |
1922 | #define TAG_EXISTS 2 | |
1923 | #define TAG_DISPLAY 4 | |
1924 | #define TAG_THREADNAME 8 | |
c5aa993b | 1925 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1926 | |
23860348 | 1927 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1928 | |
b2dd6311 | 1929 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1930 | |
a14ed312 | 1931 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1932 | |
a14ed312 | 1933 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1934 | |
23860348 | 1935 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1936 | |
a14ed312 | 1937 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1938 | |
a14ed312 | 1939 | static char *pack_int (char *buf, int value); |
cce74817 | 1940 | |
a14ed312 | 1941 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1942 | |
a14ed312 | 1943 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1944 | |
23860348 | 1945 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1946 | |
23860348 | 1947 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1948 | |
23860348 | 1949 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1950 | |
23860348 | 1951 | static int threadref_to_int (threadref *ref); |
cce74817 | 1952 | |
23860348 | 1953 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1954 | |
23860348 | 1955 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1956 | |
2bc416ba | 1957 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1958 | threadref *id); |
cce74817 | 1959 | |
a14ed312 | 1960 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1961 | threadref *expectedref, |
a14ed312 KB |
1962 | struct gdb_ext_thread_info |
1963 | *info); | |
cce74817 JM |
1964 | |
1965 | ||
2bc416ba | 1966 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1967 | int fieldset, /*TAG mask */ |
a14ed312 | 1968 | struct gdb_ext_thread_info *info); |
cce74817 | 1969 | |
a14ed312 KB |
1970 | static char *pack_threadlist_request (char *pkt, int startflag, |
1971 | int threadcount, | |
23860348 | 1972 | threadref *nextthread); |
cce74817 | 1973 | |
a14ed312 KB |
1974 | static int parse_threadlist_response (char *pkt, |
1975 | int result_limit, | |
23860348 | 1976 | threadref *original_echo, |
2bc416ba | 1977 | threadref *resultlist, |
23860348 | 1978 | int *doneflag); |
cce74817 | 1979 | |
a14ed312 | 1980 | static int remote_get_threadlist (int startflag, |
23860348 | 1981 | threadref *nextthread, |
a14ed312 KB |
1982 | int result_limit, |
1983 | int *done, | |
2bc416ba | 1984 | int *result_count, |
23860348 | 1985 | threadref *threadlist); |
cce74817 | 1986 | |
23860348 | 1987 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1988 | |
a14ed312 KB |
1989 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1990 | void *context, int looplimit); | |
cce74817 | 1991 | |
23860348 | 1992 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1993 | |
82f73884 PA |
1994 | |
1995 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1996 | buffer we're allowed to write to. Returns | |
1997 | BUF+CHARACTERS_WRITTEN. */ | |
1998 | ||
1999 | static char * | |
2000 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2001 | { | |
2002 | int pid, tid; | |
2003 | struct remote_state *rs = get_remote_state (); | |
2004 | ||
2005 | if (remote_multi_process_p (rs)) | |
2006 | { | |
2007 | pid = ptid_get_pid (ptid); | |
2008 | if (pid < 0) | |
2009 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2010 | else | |
2011 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2012 | } | |
2013 | tid = ptid_get_tid (ptid); | |
2014 | if (tid < 0) | |
2015 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2016 | else | |
2017 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2018 | ||
2019 | return buf; | |
2020 | } | |
2021 | ||
2022 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2023 | passed the last parsed char. Returns null_ptid on error. */ | |
2024 | ||
2025 | static ptid_t | |
2026 | read_ptid (char *buf, char **obuf) | |
2027 | { | |
2028 | char *p = buf; | |
2029 | char *pp; | |
2030 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2031 | |
2032 | if (*p == 'p') | |
2033 | { | |
2034 | /* Multi-process ptid. */ | |
2035 | pp = unpack_varlen_hex (p + 1, &pid); | |
2036 | if (*pp != '.') | |
b37520b6 | 2037 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2038 | |
2039 | p = pp; | |
2040 | pp = unpack_varlen_hex (p + 1, &tid); | |
2041 | if (obuf) | |
2042 | *obuf = pp; | |
2043 | return ptid_build (pid, 0, tid); | |
2044 | } | |
2045 | ||
2046 | /* No multi-process. Just a tid. */ | |
2047 | pp = unpack_varlen_hex (p, &tid); | |
2048 | ||
2049 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2050 | what's in inferior_ptid, unless it's null at this point. If so, |
2051 | then since there's no way to know the pid of the reported | |
2052 | threads, use the magic number. */ | |
2053 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2054 | pid = ptid_get_pid (magic_null_ptid); | |
2055 | else | |
2056 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2057 | |
2058 | if (obuf) | |
2059 | *obuf = pp; | |
2060 | return ptid_build (pid, 0, tid); | |
2061 | } | |
2062 | ||
23860348 | 2063 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
2064 | |
2065 | static const char hexchars[] = "0123456789abcdef"; | |
2066 | ||
2067 | static int | |
fba45db2 | 2068 | ishex (int ch, int *val) |
c906108c SS |
2069 | { |
2070 | if ((ch >= 'a') && (ch <= 'f')) | |
2071 | { | |
2072 | *val = ch - 'a' + 10; | |
2073 | return 1; | |
2074 | } | |
2075 | if ((ch >= 'A') && (ch <= 'F')) | |
2076 | { | |
2077 | *val = ch - 'A' + 10; | |
2078 | return 1; | |
2079 | } | |
2080 | if ((ch >= '0') && (ch <= '9')) | |
2081 | { | |
2082 | *val = ch - '0'; | |
2083 | return 1; | |
2084 | } | |
2085 | return 0; | |
2086 | } | |
2087 | ||
2088 | static int | |
fba45db2 | 2089 | stubhex (int ch) |
c906108c SS |
2090 | { |
2091 | if (ch >= 'a' && ch <= 'f') | |
2092 | return ch - 'a' + 10; | |
2093 | if (ch >= '0' && ch <= '9') | |
2094 | return ch - '0'; | |
2095 | if (ch >= 'A' && ch <= 'F') | |
2096 | return ch - 'A' + 10; | |
2097 | return -1; | |
2098 | } | |
2099 | ||
2100 | static int | |
fba45db2 | 2101 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2102 | { |
2103 | int nibble; | |
2104 | int retval = 0; | |
2105 | ||
2106 | while (fieldlength) | |
2107 | { | |
2108 | nibble = stubhex (*buff++); | |
2109 | retval |= nibble; | |
2110 | fieldlength--; | |
2111 | if (fieldlength) | |
2112 | retval = retval << 4; | |
2113 | } | |
2114 | return retval; | |
2115 | } | |
2116 | ||
2117 | char * | |
fba45db2 | 2118 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2119 | ULONGEST *result) |
c906108c SS |
2120 | { |
2121 | int nibble; | |
d49c44d5 | 2122 | ULONGEST retval = 0; |
c906108c SS |
2123 | |
2124 | while (ishex (*buff, &nibble)) | |
2125 | { | |
2126 | buff++; | |
2127 | retval = retval << 4; | |
2128 | retval |= nibble & 0x0f; | |
2129 | } | |
2130 | *result = retval; | |
2131 | return buff; | |
2132 | } | |
2133 | ||
2134 | static char * | |
fba45db2 | 2135 | unpack_nibble (char *buf, int *val) |
c906108c | 2136 | { |
b7589f7d | 2137 | *val = fromhex (*buf++); |
c906108c SS |
2138 | return buf; |
2139 | } | |
2140 | ||
2141 | static char * | |
fba45db2 | 2142 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2143 | { |
2144 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2145 | return buf; | |
2146 | } | |
2147 | ||
2148 | static char * | |
fba45db2 | 2149 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2150 | { |
2151 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2152 | *pkt++ = hexchars[(byte & 0xf)]; | |
2153 | return pkt; | |
2154 | } | |
2155 | ||
2156 | static char * | |
fba45db2 | 2157 | unpack_byte (char *buf, int *value) |
c906108c SS |
2158 | { |
2159 | *value = stub_unpack_int (buf, 2); | |
2160 | return buf + 2; | |
2161 | } | |
2162 | ||
2163 | static char * | |
fba45db2 | 2164 | pack_int (char *buf, int value) |
c906108c SS |
2165 | { |
2166 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2167 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2168 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2169 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2170 | return buf; | |
2171 | } | |
2172 | ||
2173 | static char * | |
fba45db2 | 2174 | unpack_int (char *buf, int *value) |
c906108c SS |
2175 | { |
2176 | *value = stub_unpack_int (buf, 8); | |
2177 | return buf + 8; | |
2178 | } | |
2179 | ||
23860348 | 2180 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2181 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2182 | |
2183 | static char * | |
fba45db2 | 2184 | pack_string (char *pkt, char *string) |
c906108c SS |
2185 | { |
2186 | char ch; | |
2187 | int len; | |
2188 | ||
2189 | len = strlen (string); | |
2190 | if (len > 200) | |
23860348 | 2191 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2192 | pkt = pack_hex_byte (pkt, len); |
2193 | while (len-- > 0) | |
2194 | { | |
2195 | ch = *string++; | |
2196 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2197 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2198 | *pkt++ = ch; |
2199 | } | |
2200 | return pkt; | |
2201 | } | |
2202 | #endif /* 0 (unused) */ | |
2203 | ||
2204 | static char * | |
fba45db2 | 2205 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2206 | { |
2207 | while (length--) | |
2208 | *dest++ = *src++; | |
2209 | *dest = '\0'; | |
2210 | return src; | |
2211 | } | |
2212 | ||
2213 | static char * | |
fba45db2 | 2214 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2215 | { |
2216 | char *limit; | |
2217 | unsigned char *altid; | |
2218 | ||
2219 | altid = (unsigned char *) id; | |
2220 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2221 | while (pkt < limit) | |
2222 | pkt = pack_hex_byte (pkt, *altid++); | |
2223 | return pkt; | |
2224 | } | |
2225 | ||
2226 | ||
2227 | static char * | |
fba45db2 | 2228 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2229 | { |
2230 | char *altref; | |
2231 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2232 | int x, y; | |
2233 | ||
2234 | altref = (char *) id; | |
2235 | ||
2236 | while (inbuf < limit) | |
2237 | { | |
2238 | x = stubhex (*inbuf++); | |
2239 | y = stubhex (*inbuf++); | |
2240 | *altref++ = (x << 4) | y; | |
2241 | } | |
2242 | return inbuf; | |
2243 | } | |
2244 | ||
2245 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2246 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2247 | to use 64bit thread references internally. This is an adapter |
2248 | function. */ | |
2249 | ||
2250 | void | |
fba45db2 | 2251 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2252 | { |
2253 | unsigned char *scan; | |
2254 | ||
2255 | scan = (unsigned char *) id; | |
2256 | { | |
2257 | int i = 4; | |
2258 | while (i--) | |
2259 | *scan++ = 0; | |
2260 | } | |
2261 | *scan++ = (value >> 24) & 0xff; | |
2262 | *scan++ = (value >> 16) & 0xff; | |
2263 | *scan++ = (value >> 8) & 0xff; | |
2264 | *scan++ = (value & 0xff); | |
2265 | } | |
2266 | ||
2267 | static int | |
fba45db2 | 2268 | threadref_to_int (threadref *ref) |
c906108c SS |
2269 | { |
2270 | int i, value = 0; | |
2271 | unsigned char *scan; | |
2272 | ||
cfd77fa1 | 2273 | scan = *ref; |
c906108c SS |
2274 | scan += 4; |
2275 | i = 4; | |
2276 | while (i-- > 0) | |
2277 | value = (value << 8) | ((*scan++) & 0xff); | |
2278 | return value; | |
2279 | } | |
2280 | ||
2281 | static void | |
fba45db2 | 2282 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2283 | { |
2284 | int i; | |
2285 | unsigned char *csrc, *cdest; | |
2286 | ||
2287 | csrc = (unsigned char *) src; | |
2288 | cdest = (unsigned char *) dest; | |
2289 | i = 8; | |
2290 | while (i--) | |
2291 | *cdest++ = *csrc++; | |
2292 | } | |
2293 | ||
2294 | static int | |
fba45db2 | 2295 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2296 | { |
23860348 | 2297 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2298 | #if 0 |
2299 | unsigned char *srcp, *destp; | |
2300 | int i, result; | |
2301 | srcp = (char *) src; | |
2302 | destp = (char *) dest; | |
2303 | ||
2304 | result = 1; | |
2305 | while (i-- > 0) | |
2306 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2307 | return result; | |
2308 | #endif | |
2309 | return 1; | |
2310 | } | |
2311 | ||
2312 | /* | |
c5aa993b JM |
2313 | threadid:1, # always request threadid |
2314 | context_exists:2, | |
2315 | display:4, | |
2316 | unique_name:8, | |
2317 | more_display:16 | |
2318 | */ | |
c906108c SS |
2319 | |
2320 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2321 | ||
2322 | static char * | |
fba45db2 | 2323 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2324 | { |
23860348 MS |
2325 | *pkt++ = 'q'; /* Info Query */ |
2326 | *pkt++ = 'P'; /* process or thread info */ | |
2327 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2328 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2329 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2330 | return pkt; |
2331 | } | |
2332 | ||
23860348 | 2333 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2334 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2335 | add more fields as time goes by. */ |
c906108c | 2336 | |
23860348 | 2337 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2338 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2339 | fetch registers and its stack? */ |
c5aa993b | 2340 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2341 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2342 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2343 | the process. */ |
c906108c SS |
2344 | |
2345 | static int | |
fba45db2 KB |
2346 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2347 | struct gdb_ext_thread_info *info) | |
c906108c | 2348 | { |
d01949b6 | 2349 | struct remote_state *rs = get_remote_state (); |
c906108c | 2350 | int mask, length; |
cfd77fa1 | 2351 | int tag; |
c906108c | 2352 | threadref ref; |
6d820c5c | 2353 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2354 | int retval = 1; |
2355 | ||
23860348 | 2356 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2357 | info->active = 0; |
2358 | info->display[0] = '\0'; | |
2359 | info->shortname[0] = '\0'; | |
2360 | info->more_display[0] = '\0'; | |
2361 | ||
23860348 MS |
2362 | /* Assume the characters indicating the packet type have been |
2363 | stripped. */ | |
c906108c SS |
2364 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2365 | pkt = unpack_threadid (pkt, &ref); | |
2366 | ||
2367 | if (mask == 0) | |
8a3fe4f8 | 2368 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2369 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2370 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2371 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2372 | return 0; |
2373 | } | |
2374 | copy_threadref (&info->threadid, &ref); | |
2375 | ||
23860348 | 2376 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2377 | |
23860348 MS |
2378 | /* Packets are terminated with nulls. */ |
2379 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2380 | { |
2381 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2382 | pkt = unpack_byte (pkt, &length); /* length */ |
2383 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2384 | { |
8a3fe4f8 | 2385 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2386 | retval = 0; |
2387 | break; | |
2388 | } | |
2389 | if (tag == TAG_THREADID) | |
2390 | { | |
2391 | if (length != 16) | |
2392 | { | |
8a3fe4f8 | 2393 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2394 | retval = 0; |
2395 | break; | |
2396 | } | |
2397 | pkt = unpack_threadid (pkt, &ref); | |
2398 | mask = mask & ~TAG_THREADID; | |
2399 | continue; | |
2400 | } | |
2401 | if (tag == TAG_EXISTS) | |
2402 | { | |
2403 | info->active = stub_unpack_int (pkt, length); | |
2404 | pkt += length; | |
2405 | mask = mask & ~(TAG_EXISTS); | |
2406 | if (length > 8) | |
2407 | { | |
8a3fe4f8 | 2408 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2409 | retval = 0; |
2410 | break; | |
2411 | } | |
2412 | continue; | |
2413 | } | |
2414 | if (tag == TAG_THREADNAME) | |
2415 | { | |
2416 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2417 | mask = mask & ~TAG_THREADNAME; | |
2418 | continue; | |
2419 | } | |
2420 | if (tag == TAG_DISPLAY) | |
2421 | { | |
2422 | pkt = unpack_string (pkt, &info->display[0], length); | |
2423 | mask = mask & ~TAG_DISPLAY; | |
2424 | continue; | |
2425 | } | |
2426 | if (tag == TAG_MOREDISPLAY) | |
2427 | { | |
2428 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2429 | mask = mask & ~TAG_MOREDISPLAY; | |
2430 | continue; | |
2431 | } | |
8a3fe4f8 | 2432 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2433 | break; /* Not a tag we know about. */ |
c906108c SS |
2434 | } |
2435 | return retval; | |
2436 | } | |
2437 | ||
2438 | static int | |
fba45db2 KB |
2439 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2440 | struct gdb_ext_thread_info *info) | |
c906108c | 2441 | { |
d01949b6 | 2442 | struct remote_state *rs = get_remote_state (); |
c906108c | 2443 | int result; |
c906108c | 2444 | |
2e9f7625 DJ |
2445 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2446 | putpkt (rs->buf); | |
6d820c5c | 2447 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2448 | |
2449 | if (rs->buf[0] == '\0') | |
2450 | return 0; | |
2451 | ||
2e9f7625 | 2452 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2453 | threadid, info); |
c906108c SS |
2454 | return result; |
2455 | } | |
2456 | ||
c906108c SS |
2457 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2458 | ||
2459 | static char * | |
fba45db2 KB |
2460 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2461 | threadref *nextthread) | |
c906108c SS |
2462 | { |
2463 | *pkt++ = 'q'; /* info query packet */ | |
2464 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2465 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2466 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2467 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2468 | *pkt = '\0'; | |
2469 | return pkt; | |
2470 | } | |
2471 | ||
2472 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2473 | ||
2474 | static int | |
fba45db2 KB |
2475 | parse_threadlist_response (char *pkt, int result_limit, |
2476 | threadref *original_echo, threadref *resultlist, | |
2477 | int *doneflag) | |
c906108c | 2478 | { |
d01949b6 | 2479 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2480 | char *limit; |
2481 | int count, resultcount, done; | |
2482 | ||
2483 | resultcount = 0; | |
2484 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2485 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2486 | /* done parse past here */ |
c906108c SS |
2487 | pkt = unpack_byte (pkt, &count); /* count field */ |
2488 | pkt = unpack_nibble (pkt, &done); | |
2489 | /* The first threadid is the argument threadid. */ | |
2490 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2491 | while ((count-- > 0) && (pkt < limit)) | |
2492 | { | |
2493 | pkt = unpack_threadid (pkt, resultlist++); | |
2494 | if (resultcount++ >= result_limit) | |
2495 | break; | |
2496 | } | |
2497 | if (doneflag) | |
2498 | *doneflag = done; | |
2499 | return resultcount; | |
2500 | } | |
2501 | ||
2502 | static int | |
fba45db2 KB |
2503 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2504 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2505 | { |
d01949b6 | 2506 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2507 | int result = 1; |
2508 | ||
23860348 | 2509 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2510 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2511 | >= get_remote_packet_size ()) | |
ea9c271d | 2512 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2513 | |
6d820c5c DJ |
2514 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2515 | putpkt (rs->buf); | |
2516 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2517 | |
d8f2712d | 2518 | if (*rs->buf == '\0') |
21bce120 | 2519 | return 0; |
d8f2712d VP |
2520 | else |
2521 | *result_count = | |
0d031856 TT |
2522 | parse_threadlist_response (rs->buf + 2, result_limit, |
2523 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2524 | |
0d031856 | 2525 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2526 | { |
23860348 MS |
2527 | /* FIXME: This is a good reason to drop the packet. */ |
2528 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2529 | /* Possabilities : |
2530 | retransmit immediatly - race conditions | |
2531 | retransmit after timeout - yes | |
2532 | exit | |
2533 | wait for packet, then exit | |
2534 | */ | |
8a3fe4f8 | 2535 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2536 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2537 | } |
2538 | if (*result_count <= 0) | |
2539 | { | |
2540 | if (*done != 1) | |
2541 | { | |
8a3fe4f8 | 2542 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2543 | result = 0; |
2544 | } | |
2545 | return result; /* break; */ | |
2546 | } | |
2547 | if (*result_count > result_limit) | |
2548 | { | |
2549 | *result_count = 0; | |
8a3fe4f8 | 2550 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2551 | return 0; |
2552 | } | |
2553 | return result; | |
2554 | } | |
2555 | ||
23860348 MS |
2556 | /* This is the interface between remote and threads, remotes upper |
2557 | interface. */ | |
c906108c SS |
2558 | |
2559 | /* remote_find_new_threads retrieves the thread list and for each | |
2560 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2561 | adding the thread if it does not already exist. This involves |
c906108c SS |
2562 | getting partial thread lists from the remote target so, polling the |
2563 | quit_flag is required. */ | |
2564 | ||
2565 | ||
c906108c | 2566 | static int |
fba45db2 KB |
2567 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2568 | int looplimit) | |
c906108c | 2569 | { |
0d031856 | 2570 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2571 | int done, i, result_count; |
2572 | int startflag = 1; | |
2573 | int result = 1; | |
2574 | int loopcount = 0; | |
c906108c SS |
2575 | |
2576 | done = 0; | |
2577 | while (!done) | |
2578 | { | |
2579 | if (loopcount++ > looplimit) | |
2580 | { | |
2581 | result = 0; | |
8a3fe4f8 | 2582 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2583 | break; |
2584 | } | |
0d031856 TT |
2585 | if (!remote_get_threadlist (startflag, &rs->nextthread, |
2586 | MAXTHREADLISTRESULTS, | |
2587 | &done, &result_count, rs->resultthreadlist)) | |
c906108c SS |
2588 | { |
2589 | result = 0; | |
2590 | break; | |
2591 | } | |
23860348 | 2592 | /* Clear for later iterations. */ |
c906108c SS |
2593 | startflag = 0; |
2594 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2595 | if (result_count >= 1) | |
0d031856 TT |
2596 | copy_threadref (&rs->nextthread, |
2597 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2598 | i = 0; |
2599 | while (result_count--) | |
0d031856 | 2600 | if (!(result = (*stepfunction) (&rs->resultthreadlist[i++], context))) |
c906108c SS |
2601 | break; |
2602 | } | |
2603 | return result; | |
2604 | } | |
2605 | ||
2606 | static int | |
fba45db2 | 2607 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2608 | { |
79d7f229 PA |
2609 | int pid = ptid_get_pid (inferior_ptid); |
2610 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2611 | |
2612 | if (!in_thread_list (ptid)) | |
2613 | add_thread (ptid); | |
c906108c SS |
2614 | return 1; /* continue iterator */ |
2615 | } | |
2616 | ||
2617 | #define CRAZY_MAX_THREADS 1000 | |
2618 | ||
39f77062 KB |
2619 | static ptid_t |
2620 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2621 | { |
d01949b6 | 2622 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2623 | |
2624 | putpkt ("qC"); | |
6d820c5c | 2625 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2626 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2627 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2628 | else |
2629 | return oldpid; | |
2630 | } | |
2631 | ||
802188a7 RM |
2632 | /* Find new threads for info threads command. |
2633 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2634 | */ |
cce74817 JM |
2635 | |
2636 | static void | |
fba45db2 | 2637 | remote_find_new_threads (void) |
c906108c | 2638 | { |
c5aa993b JM |
2639 | remote_threadlist_iterator (remote_newthread_step, 0, |
2640 | CRAZY_MAX_THREADS); | |
c906108c SS |
2641 | } |
2642 | ||
dc146f7c VP |
2643 | #if defined(HAVE_LIBEXPAT) |
2644 | ||
2645 | typedef struct thread_item | |
2646 | { | |
2647 | ptid_t ptid; | |
2648 | char *extra; | |
2649 | int core; | |
2650 | } thread_item_t; | |
2651 | DEF_VEC_O(thread_item_t); | |
2652 | ||
2653 | struct threads_parsing_context | |
2654 | { | |
2655 | VEC (thread_item_t) *items; | |
2656 | }; | |
2657 | ||
2658 | static void | |
2659 | start_thread (struct gdb_xml_parser *parser, | |
2660 | const struct gdb_xml_element *element, | |
2661 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2662 | { | |
2663 | struct threads_parsing_context *data = user_data; | |
2664 | ||
2665 | struct thread_item item; | |
2666 | char *id; | |
3d2c1d41 | 2667 | struct gdb_xml_value *attr; |
dc146f7c | 2668 | |
3d2c1d41 | 2669 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2670 | item.ptid = read_ptid (id, NULL); |
2671 | ||
3d2c1d41 PA |
2672 | attr = xml_find_attribute (attributes, "core"); |
2673 | if (attr != NULL) | |
2674 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2675 | else |
2676 | item.core = -1; | |
2677 | ||
2678 | item.extra = 0; | |
2679 | ||
2680 | VEC_safe_push (thread_item_t, data->items, &item); | |
2681 | } | |
2682 | ||
2683 | static void | |
2684 | end_thread (struct gdb_xml_parser *parser, | |
2685 | const struct gdb_xml_element *element, | |
2686 | void *user_data, const char *body_text) | |
2687 | { | |
2688 | struct threads_parsing_context *data = user_data; | |
2689 | ||
2690 | if (body_text && *body_text) | |
2ae2a0b7 | 2691 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2692 | } |
2693 | ||
2694 | const struct gdb_xml_attribute thread_attributes[] = { | |
2695 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2696 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2697 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2698 | }; | |
2699 | ||
2700 | const struct gdb_xml_element thread_children[] = { | |
2701 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2702 | }; | |
2703 | ||
2704 | const struct gdb_xml_element threads_children[] = { | |
2705 | { "thread", thread_attributes, thread_children, | |
2706 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2707 | start_thread, end_thread }, | |
2708 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2709 | }; | |
2710 | ||
2711 | const struct gdb_xml_element threads_elements[] = { | |
2712 | { "threads", NULL, threads_children, | |
2713 | GDB_XML_EF_NONE, NULL, NULL }, | |
2714 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2715 | }; | |
2716 | ||
02357a4a PA |
2717 | /* Discard the contents of the constructed thread info context. */ |
2718 | ||
2719 | static void | |
2720 | clear_threads_parsing_context (void *p) | |
2721 | { | |
2722 | struct threads_parsing_context *context = p; | |
2723 | int i; | |
2724 | struct thread_item *item; | |
2725 | ||
2726 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2727 | xfree (item->extra); | |
2728 | ||
2729 | VEC_free (thread_item_t, context->items); | |
2730 | } | |
2731 | ||
dc146f7c VP |
2732 | #endif |
2733 | ||
9d1f7ab2 MS |
2734 | /* |
2735 | * Find all threads for info threads command. | |
2736 | * Uses new thread protocol contributed by Cisco. | |
2737 | * Falls back and attempts to use the older method (above) | |
2738 | * if the target doesn't respond to the new method. | |
2739 | */ | |
2740 | ||
0f71a2f6 | 2741 | static void |
28439f5e | 2742 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2743 | { |
d01949b6 | 2744 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2745 | char *bufp; |
79d7f229 | 2746 | ptid_t new_thread; |
0f71a2f6 | 2747 | |
5d93a237 | 2748 | if (rs->remote_desc == 0) /* paranoia */ |
8a3fe4f8 | 2749 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2750 | |
dc146f7c VP |
2751 | #if defined(HAVE_LIBEXPAT) |
2752 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2753 | { | |
2754 | char *xml = target_read_stralloc (¤t_target, | |
2755 | TARGET_OBJECT_THREADS, NULL); | |
2756 | ||
2757 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2758 | |
dc146f7c VP |
2759 | if (xml && *xml) |
2760 | { | |
dc146f7c | 2761 | struct threads_parsing_context context; |
dc146f7c | 2762 | |
efc0eabd PA |
2763 | context.items = NULL; |
2764 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2765 | |
efc0eabd PA |
2766 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2767 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2768 | { |
2769 | int i; | |
2770 | struct thread_item *item; | |
2771 | ||
3e43a32a MS |
2772 | for (i = 0; |
2773 | VEC_iterate (thread_item_t, context.items, i, item); | |
2774 | ++i) | |
dc146f7c VP |
2775 | { |
2776 | if (!ptid_equal (item->ptid, null_ptid)) | |
2777 | { | |
2778 | struct private_thread_info *info; | |
2779 | /* In non-stop mode, we assume new found threads | |
2780 | are running until proven otherwise with a | |
2781 | stop reply. In all-stop, we can only get | |
2782 | here if all threads are stopped. */ | |
2783 | int running = non_stop ? 1 : 0; | |
2784 | ||
2785 | remote_notice_new_inferior (item->ptid, running); | |
2786 | ||
2787 | info = demand_private_info (item->ptid); | |
2788 | info->core = item->core; | |
2789 | info->extra = item->extra; | |
02357a4a | 2790 | item->extra = NULL; |
dc146f7c | 2791 | } |
dc146f7c VP |
2792 | } |
2793 | } | |
dc146f7c VP |
2794 | } |
2795 | ||
2796 | do_cleanups (back_to); | |
2797 | return; | |
2798 | } | |
2799 | #endif | |
2800 | ||
b80fafe3 | 2801 | if (rs->use_threadinfo_query) |
9d1f7ab2 MS |
2802 | { |
2803 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2804 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2805 | bufp = rs->buf; |
9d1f7ab2 | 2806 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2807 | { |
44d594fd PA |
2808 | struct cleanup *old_chain; |
2809 | char *saved_reply; | |
2810 | ||
2811 | /* remote_notice_new_inferior (in the loop below) may make | |
2812 | new RSP calls, which clobber rs->buf. Work with a | |
2813 | copy. */ | |
2814 | bufp = saved_reply = xstrdup (rs->buf); | |
2815 | old_chain = make_cleanup (free_current_contents, &saved_reply); | |
2816 | ||
9d1f7ab2 MS |
2817 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2818 | { | |
2819 | do | |
2820 | { | |
82f73884 | 2821 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2822 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2823 | { |
74531fed | 2824 | /* In non-stop mode, we assume new found threads |
1941c569 | 2825 | are running until proven otherwise with a |
74531fed PA |
2826 | stop reply. In all-stop, we can only get |
2827 | here if all threads are stopped. */ | |
1941c569 PA |
2828 | int running = non_stop ? 1 : 0; |
2829 | ||
2830 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2831 | } |
9d1f7ab2 MS |
2832 | } |
2833 | while (*bufp++ == ','); /* comma-separated list */ | |
44d594fd | 2834 | free_current_contents (&saved_reply); |
9d1f7ab2 | 2835 | putpkt ("qsThreadInfo"); |
6d820c5c | 2836 | getpkt (&rs->buf, &rs->buf_size, 0); |
44d594fd | 2837 | bufp = saved_reply = xstrdup (rs->buf); |
9d1f7ab2 | 2838 | } |
44d594fd | 2839 | do_cleanups (old_chain); |
9d1f7ab2 MS |
2840 | return; /* done */ |
2841 | } | |
2842 | } | |
2843 | ||
74531fed PA |
2844 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2845 | if (non_stop) | |
2846 | return; | |
2847 | ||
23860348 | 2848 | /* Else fall back to old method based on jmetzler protocol. */ |
b80fafe3 | 2849 | rs->use_threadinfo_query = 0; |
9d1f7ab2 MS |
2850 | remote_find_new_threads (); |
2851 | return; | |
2852 | } | |
2853 | ||
802188a7 | 2854 | /* |
9d1f7ab2 MS |
2855 | * Collect a descriptive string about the given thread. |
2856 | * The target may say anything it wants to about the thread | |
2857 | * (typically info about its blocked / runnable state, name, etc.). | |
2858 | * This string will appear in the info threads display. | |
802188a7 | 2859 | * |
9d1f7ab2 MS |
2860 | * Optional: targets are not required to implement this function. |
2861 | */ | |
2862 | ||
2863 | static char * | |
2864 | remote_threads_extra_info (struct thread_info *tp) | |
2865 | { | |
d01949b6 | 2866 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2867 | int result; |
2868 | int set; | |
2869 | threadref id; | |
2870 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2871 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2872 | int n = 0; /* position in display_buf */ |
2873 | ||
5d93a237 | 2874 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 2875 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2876 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2877 | |
60e569b9 PA |
2878 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2879 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2880 | /* This is the main thread which was added by GDB. The remote | |
2881 | server doesn't know about it. */ | |
2882 | return NULL; | |
2883 | ||
dc146f7c VP |
2884 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2885 | { | |
2886 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2887 | |
dc146f7c VP |
2888 | if (info && info->private) |
2889 | return info->private->extra; | |
2890 | else | |
2891 | return NULL; | |
2892 | } | |
2893 | ||
b80fafe3 | 2894 | if (rs->use_threadextra_query) |
9d1f7ab2 | 2895 | { |
82f73884 PA |
2896 | char *b = rs->buf; |
2897 | char *endb = rs->buf + get_remote_packet_size (); | |
2898 | ||
2899 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2900 | b += strlen (b); | |
2901 | write_ptid (b, endb, tp->ptid); | |
2902 | ||
2e9f7625 | 2903 | putpkt (rs->buf); |
6d820c5c | 2904 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2905 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2906 | { |
2e9f7625 DJ |
2907 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2908 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2909 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2910 | return display_buf; |
2911 | } | |
0f71a2f6 | 2912 | } |
9d1f7ab2 MS |
2913 | |
2914 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 2915 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
2916 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
2917 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2918 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2919 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2920 | if (threadinfo.active) | |
0f71a2f6 | 2921 | { |
9d1f7ab2 | 2922 | if (*threadinfo.shortname) |
2bc416ba | 2923 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2924 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2925 | if (*threadinfo.display) |
2bc416ba | 2926 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2927 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2928 | if (*threadinfo.more_display) |
2bc416ba | 2929 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2930 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2931 | |
2932 | if (n > 0) | |
c5aa993b | 2933 | { |
23860348 | 2934 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2935 | if (',' == display_buf[n-1]) |
2936 | display_buf[n-1] = ' '; | |
2937 | return display_buf; | |
c5aa993b | 2938 | } |
0f71a2f6 | 2939 | } |
9d1f7ab2 | 2940 | return NULL; |
0f71a2f6 | 2941 | } |
c906108c | 2942 | \f |
c5aa993b | 2943 | |
0fb4aa4b PA |
2944 | static int |
2945 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2946 | struct static_tracepoint_marker *marker) | |
2947 | { | |
2948 | struct remote_state *rs = get_remote_state (); | |
2949 | char *p = rs->buf; | |
2950 | ||
bba74b36 | 2951 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2952 | p += strlen (p); |
2953 | p += hexnumstr (p, addr); | |
2954 | putpkt (rs->buf); | |
2955 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2956 | p = rs->buf; | |
2957 | ||
2958 | if (*p == 'E') | |
2959 | error (_("Remote failure reply: %s"), p); | |
2960 | ||
2961 | if (*p++ == 'm') | |
2962 | { | |
2963 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2964 | return 1; | |
2965 | } | |
2966 | ||
2967 | return 0; | |
2968 | } | |
2969 | ||
0fb4aa4b PA |
2970 | static VEC(static_tracepoint_marker_p) * |
2971 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2972 | { | |
2973 | struct remote_state *rs = get_remote_state (); | |
2974 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2975 | struct static_tracepoint_marker *marker = NULL; | |
2976 | struct cleanup *old_chain; | |
2977 | char *p; | |
2978 | ||
2979 | /* Ask for a first packet of static tracepoint marker | |
2980 | definition. */ | |
2981 | putpkt ("qTfSTM"); | |
2982 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2983 | p = rs->buf; | |
2984 | if (*p == 'E') | |
2985 | error (_("Remote failure reply: %s"), p); | |
2986 | ||
2987 | old_chain = make_cleanup (free_current_marker, &marker); | |
2988 | ||
2989 | while (*p++ == 'm') | |
2990 | { | |
2991 | if (marker == NULL) | |
2992 | marker = XCNEW (struct static_tracepoint_marker); | |
2993 | ||
2994 | do | |
2995 | { | |
2996 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2997 | ||
2998 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2999 | { | |
3000 | VEC_safe_push (static_tracepoint_marker_p, | |
3001 | markers, marker); | |
3002 | marker = NULL; | |
3003 | } | |
3004 | else | |
3005 | { | |
3006 | release_static_tracepoint_marker (marker); | |
3007 | memset (marker, 0, sizeof (*marker)); | |
3008 | } | |
3009 | } | |
3010 | while (*p++ == ','); /* comma-separated list */ | |
3011 | /* Ask for another packet of static tracepoint definition. */ | |
3012 | putpkt ("qTsSTM"); | |
3013 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3014 | p = rs->buf; | |
3015 | } | |
3016 | ||
3017 | do_cleanups (old_chain); | |
3018 | return markers; | |
3019 | } | |
3020 | ||
3021 | \f | |
10760264 JB |
3022 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3023 | ||
3024 | static ptid_t | |
3025 | remote_get_ada_task_ptid (long lwp, long thread) | |
3026 | { | |
3027 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
3028 | } | |
3029 | \f | |
3030 | ||
24b06219 | 3031 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3032 | |
3033 | static void | |
fba45db2 | 3034 | extended_remote_restart (void) |
c906108c | 3035 | { |
d01949b6 | 3036 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3037 | |
3038 | /* Send the restart command; for reasons I don't understand the | |
3039 | remote side really expects a number after the "R". */ | |
ea9c271d | 3040 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3041 | putpkt (rs->buf); |
c906108c | 3042 | |
ad9a8f3f | 3043 | remote_fileio_reset (); |
c906108c SS |
3044 | } |
3045 | \f | |
3046 | /* Clean up connection to a remote debugger. */ | |
3047 | ||
c906108c | 3048 | static void |
460014f5 | 3049 | remote_close (void) |
c906108c | 3050 | { |
5d93a237 TT |
3051 | struct remote_state *rs = get_remote_state (); |
3052 | ||
3053 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3054 | return; /* already closed */ |
3055 | ||
3056 | /* Make sure we leave stdin registered in the event loop, and we | |
3057 | don't leave the async SIGINT signal handler installed. */ | |
3058 | remote_terminal_ours (); | |
ce5ce7ed | 3059 | |
5d93a237 TT |
3060 | serial_close (rs->remote_desc); |
3061 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3062 | |
3063 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3064 | of all the inferiors and their threads we were controlling. |
3065 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3066 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3067 | inferior_ptid = null_ptid; |
f67fd822 | 3068 | discard_all_inferiors (); |
ce5ce7ed | 3069 | |
f48ff2a7 YQ |
3070 | /* We are closing the remote target, so we should discard |
3071 | everything of this target. */ | |
3072 | discard_pending_stop_replies_in_queue (); | |
74531fed PA |
3073 | |
3074 | if (remote_async_inferior_event_token) | |
3075 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3076 | |
5965e028 | 3077 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3078 | |
3079 | trace_reset_local_state (); | |
c906108c SS |
3080 | } |
3081 | ||
23860348 | 3082 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3083 | |
3084 | static void | |
fba45db2 | 3085 | get_offsets (void) |
c906108c | 3086 | { |
d01949b6 | 3087 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3088 | char *buf; |
085dd6e6 | 3089 | char *ptr; |
31d99776 DJ |
3090 | int lose, num_segments = 0, do_sections, do_segments; |
3091 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3092 | struct section_offsets *offs; |
31d99776 DJ |
3093 | struct symfile_segment_data *data; |
3094 | ||
3095 | if (symfile_objfile == NULL) | |
3096 | return; | |
c906108c SS |
3097 | |
3098 | putpkt ("qOffsets"); | |
6d820c5c | 3099 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3100 | buf = rs->buf; |
c906108c SS |
3101 | |
3102 | if (buf[0] == '\000') | |
3103 | return; /* Return silently. Stub doesn't support | |
23860348 | 3104 | this command. */ |
c906108c SS |
3105 | if (buf[0] == 'E') |
3106 | { | |
8a3fe4f8 | 3107 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3108 | return; |
3109 | } | |
3110 | ||
3111 | /* Pick up each field in turn. This used to be done with scanf, but | |
3112 | scanf will make trouble if CORE_ADDR size doesn't match | |
3113 | conversion directives correctly. The following code will work | |
3114 | with any size of CORE_ADDR. */ | |
3115 | text_addr = data_addr = bss_addr = 0; | |
3116 | ptr = buf; | |
3117 | lose = 0; | |
3118 | ||
3119 | if (strncmp (ptr, "Text=", 5) == 0) | |
3120 | { | |
3121 | ptr += 5; | |
3122 | /* Don't use strtol, could lose on big values. */ | |
3123 | while (*ptr && *ptr != ';') | |
3124 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3125 | |
31d99776 DJ |
3126 | if (strncmp (ptr, ";Data=", 6) == 0) |
3127 | { | |
3128 | ptr += 6; | |
3129 | while (*ptr && *ptr != ';') | |
3130 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3131 | } | |
3132 | else | |
3133 | lose = 1; | |
3134 | ||
3135 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3136 | { | |
3137 | ptr += 5; | |
3138 | while (*ptr && *ptr != ';') | |
3139 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3140 | |
31d99776 DJ |
3141 | if (bss_addr != data_addr) |
3142 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3143 | } | |
3144 | else | |
3145 | lose = 1; | |
3146 | } | |
3147 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3148 | { |
31d99776 DJ |
3149 | ptr += 8; |
3150 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3151 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3152 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3153 | num_segments = 1; | |
3154 | ||
3155 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3156 | { | |
3157 | ptr += 9; | |
3158 | while (*ptr && *ptr != ';') | |
3159 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3160 | num_segments++; | |
3161 | } | |
c906108c SS |
3162 | } |
3163 | else | |
3164 | lose = 1; | |
3165 | ||
3166 | if (lose) | |
8a3fe4f8 | 3167 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3168 | else if (*ptr != '\0') |
3169 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3170 | |
802188a7 | 3171 | offs = ((struct section_offsets *) |
a39a16c4 | 3172 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3173 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3174 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3175 | |
31d99776 DJ |
3176 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3177 | do_segments = (data != NULL); | |
3178 | do_sections = num_segments == 0; | |
c906108c | 3179 | |
28c32713 | 3180 | if (num_segments > 0) |
31d99776 | 3181 | { |
31d99776 DJ |
3182 | segments[0] = text_addr; |
3183 | segments[1] = data_addr; | |
3184 | } | |
28c32713 JB |
3185 | /* If we have two segments, we can still try to relocate everything |
3186 | by assuming that the .text and .data offsets apply to the whole | |
3187 | text and data segments. Convert the offsets given in the packet | |
3188 | to base addresses for symfile_map_offsets_to_segments. */ | |
3189 | else if (data && data->num_segments == 2) | |
3190 | { | |
3191 | segments[0] = data->segment_bases[0] + text_addr; | |
3192 | segments[1] = data->segment_bases[1] + data_addr; | |
3193 | num_segments = 2; | |
3194 | } | |
8d385431 DJ |
3195 | /* If the object file has only one segment, assume that it is text |
3196 | rather than data; main programs with no writable data are rare, | |
3197 | but programs with no code are useless. Of course the code might | |
3198 | have ended up in the data segment... to detect that we would need | |
3199 | the permissions here. */ | |
3200 | else if (data && data->num_segments == 1) | |
3201 | { | |
3202 | segments[0] = data->segment_bases[0] + text_addr; | |
3203 | num_segments = 1; | |
3204 | } | |
28c32713 JB |
3205 | /* There's no way to relocate by segment. */ |
3206 | else | |
3207 | do_segments = 0; | |
31d99776 DJ |
3208 | |
3209 | if (do_segments) | |
3210 | { | |
3211 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3212 | offs, num_segments, segments); | |
3213 | ||
3214 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3215 | error (_("Can not handle qOffsets TextSeg " |
3216 | "response with this symbol file")); | |
31d99776 DJ |
3217 | |
3218 | if (ret > 0) | |
3219 | do_sections = 0; | |
3220 | } | |
c906108c | 3221 | |
9ef895d6 DJ |
3222 | if (data) |
3223 | free_symfile_segment_data (data); | |
31d99776 DJ |
3224 | |
3225 | if (do_sections) | |
3226 | { | |
3227 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3228 | ||
3e43a32a MS |
3229 | /* This is a temporary kludge to force data and bss to use the |
3230 | same offsets because that's what nlmconv does now. The real | |
3231 | solution requires changes to the stub and remote.c that I | |
3232 | don't have time to do right now. */ | |
31d99776 DJ |
3233 | |
3234 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3235 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3236 | } | |
c906108c SS |
3237 | |
3238 | objfile_relocate (symfile_objfile, offs); | |
3239 | } | |
3240 | ||
74531fed PA |
3241 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3242 | threads we know are stopped already. This is used during the | |
3243 | initial remote connection in non-stop mode --- threads that are | |
3244 | reported as already being stopped are left stopped. */ | |
3245 | ||
3246 | static int | |
3247 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3248 | { | |
3249 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3250 | if (peek_stop_reply (thread->ptid)) | |
3251 | set_stop_requested (thread->ptid, 1); | |
3252 | ||
3253 | return 0; | |
3254 | } | |
3255 | ||
9a7071a8 JB |
3256 | /* Send interrupt_sequence to remote target. */ |
3257 | static void | |
eeae04df | 3258 | send_interrupt_sequence (void) |
9a7071a8 | 3259 | { |
5d93a237 TT |
3260 | struct remote_state *rs = get_remote_state (); |
3261 | ||
9a7071a8 | 3262 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3263 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3264 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3265 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3266 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3267 | { | |
5d93a237 | 3268 | serial_send_break (rs->remote_desc); |
c33e31fd | 3269 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3270 | } |
3271 | else | |
3272 | internal_error (__FILE__, __LINE__, | |
3273 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3274 | interrupt_sequence_mode); | |
3275 | } | |
3276 | ||
3405876a PA |
3277 | |
3278 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3279 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3280 | ||
3281 | static ptid_t | |
3282 | stop_reply_extract_thread (char *stop_reply) | |
3283 | { | |
3284 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3285 | { | |
3286 | char *p; | |
3287 | ||
3288 | /* Txx r:val ; r:val (...) */ | |
3289 | p = &stop_reply[3]; | |
3290 | ||
3291 | /* Look for "register" named "thread". */ | |
3292 | while (*p != '\0') | |
3293 | { | |
3294 | char *p1; | |
3295 | ||
3296 | p1 = strchr (p, ':'); | |
3297 | if (p1 == NULL) | |
3298 | return null_ptid; | |
3299 | ||
3300 | if (strncmp (p, "thread", p1 - p) == 0) | |
3301 | return read_ptid (++p1, &p); | |
3302 | ||
3303 | p1 = strchr (p, ';'); | |
3304 | if (p1 == NULL) | |
3305 | return null_ptid; | |
3306 | p1++; | |
3307 | ||
3308 | p = p1; | |
3309 | } | |
3310 | } | |
3311 | ||
3312 | return null_ptid; | |
3313 | } | |
3314 | ||
49c62f2e PA |
3315 | /* Query the remote target for which is the current thread/process, |
3316 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3317 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3318 | to return the current thread. |
3319 | ||
3320 | This function is called after handling the '?' or 'vRun' packets, | |
3321 | whose response is a stop reply from which we can also try | |
3322 | extracting the thread. If the target doesn't support the explicit | |
3323 | qC query, we infer the current thread from that stop reply, passed | |
3324 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3325 | |
3326 | static void | |
3405876a | 3327 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3328 | { |
3329 | struct remote_state *rs = get_remote_state (); | |
3330 | int fake_pid_p = 0; | |
3405876a | 3331 | ptid_t ptid = null_ptid; |
49c62f2e PA |
3332 | |
3333 | inferior_ptid = null_ptid; | |
3334 | ||
3405876a PA |
3335 | /* Now, if we have thread information, update inferior_ptid. First |
3336 | if we have a stop reply handy, maybe it's a T stop reply with a | |
3337 | "thread" register we can extract the current thread from. If | |
3338 | not, ask the remote which is the current thread, with qC. The | |
3339 | former method avoids a roundtrip. Note we don't use | |
3340 | remote_parse_stop_reply as that makes use of the target | |
3341 | architecture, which we haven't yet fully determined at this | |
3342 | point. */ | |
3343 | if (wait_status != NULL) | |
3344 | ptid = stop_reply_extract_thread (wait_status); | |
3345 | if (ptid_equal (ptid, null_ptid)) | |
3346 | ptid = remote_current_thread (inferior_ptid); | |
3347 | ||
49c62f2e PA |
3348 | if (!ptid_equal (ptid, null_ptid)) |
3349 | { | |
3350 | if (!remote_multi_process_p (rs)) | |
3351 | fake_pid_p = 1; | |
3352 | ||
3353 | inferior_ptid = ptid; | |
3354 | } | |
3355 | else | |
3356 | { | |
3357 | /* Without this, some commands which require an active target | |
3358 | (such as kill) won't work. This variable serves (at least) | |
3359 | double duty as both the pid of the target process (if it has | |
3360 | such), and as a flag indicating that a target is active. */ | |
3361 | inferior_ptid = magic_null_ptid; | |
3362 | fake_pid_p = 1; | |
3363 | } | |
3364 | ||
3365 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3366 | ||
3367 | /* Add the main thread. */ | |
3368 | add_thread_silent (inferior_ptid); | |
3369 | } | |
3370 | ||
9cbc821d | 3371 | static void |
04bd08de | 3372 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3373 | { |
c8d104ad PA |
3374 | struct remote_state *rs = get_remote_state (); |
3375 | struct packet_config *noack_config; | |
2d717e4f | 3376 | char *wait_status = NULL; |
8621d6a9 | 3377 | |
23860348 | 3378 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3379 | QUIT; |
c906108c | 3380 | |
9a7071a8 JB |
3381 | if (interrupt_on_connect) |
3382 | send_interrupt_sequence (); | |
3383 | ||
57e12211 | 3384 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3385 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3386 | |
1e51243a PA |
3387 | /* Signal other parts that we're going through the initial setup, |
3388 | and so things may not be stable yet. */ | |
3389 | rs->starting_up = 1; | |
3390 | ||
c8d104ad PA |
3391 | /* The first packet we send to the target is the optional "supported |
3392 | packets" request. If the target can answer this, it will tell us | |
3393 | which later probes to skip. */ | |
3394 | remote_query_supported (); | |
3395 | ||
d914c394 SS |
3396 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3397 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3398 | remote_set_permissions (); | |
3399 | ||
c8d104ad PA |
3400 | /* Next, we possibly activate noack mode. |
3401 | ||
3402 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3403 | enable noack mode if the stub reported a wish for it with | |
3404 | qSupported. | |
3405 | ||
3406 | If set to TRUE, then enable noack mode even if the stub didn't | |
3407 | report it in qSupported. If the stub doesn't reply OK, the | |
3408 | session ends with an error. | |
3409 | ||
3410 | If FALSE, then don't activate noack mode, regardless of what the | |
3411 | stub claimed should be the default with qSupported. */ | |
3412 | ||
3413 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3414 | ||
3415 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3416 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3417 | && noack_config->support == PACKET_ENABLE)) | |
3418 | { | |
3419 | putpkt ("QStartNoAckMode"); | |
3420 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3421 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3422 | rs->noack_mode = 1; | |
3423 | } | |
3424 | ||
04bd08de | 3425 | if (extended_p) |
5fe04517 PA |
3426 | { |
3427 | /* Tell the remote that we are using the extended protocol. */ | |
3428 | putpkt ("!"); | |
3429 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3430 | } | |
3431 | ||
9b224c5e PA |
3432 | /* Let the target know which signals it is allowed to pass down to |
3433 | the program. */ | |
3434 | update_signals_program_target (); | |
3435 | ||
d962ef82 DJ |
3436 | /* Next, if the target can specify a description, read it. We do |
3437 | this before anything involving memory or registers. */ | |
3438 | target_find_description (); | |
3439 | ||
6c95b8df PA |
3440 | /* Next, now that we know something about the target, update the |
3441 | address spaces in the program spaces. */ | |
3442 | update_address_spaces (); | |
3443 | ||
50c71eaf PA |
3444 | /* On OSs where the list of libraries is global to all |
3445 | processes, we fetch them early. */ | |
f5656ead | 3446 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3447 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3448 | |
74531fed PA |
3449 | if (non_stop) |
3450 | { | |
3451 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3452 | error (_("Non-stop mode requested, but remote " |
3453 | "does not support non-stop")); | |
74531fed PA |
3454 | |
3455 | putpkt ("QNonStop:1"); | |
3456 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3457 | ||
3458 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3459 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3460 | |
3461 | /* Find about threads and processes the stub is already | |
3462 | controlling. We default to adding them in the running state. | |
3463 | The '?' query below will then tell us about which threads are | |
3464 | stopped. */ | |
04bd08de | 3465 | remote_threads_info (target); |
74531fed PA |
3466 | } |
3467 | else if (rs->non_stop_aware) | |
3468 | { | |
3469 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3470 | Request it explicitly. */ |
74531fed PA |
3471 | putpkt ("QNonStop:0"); |
3472 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3473 | ||
3474 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3475 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3476 | } |
3477 | ||
a0743c90 YQ |
3478 | /* Upload TSVs regardless of whether the target is running or not. The |
3479 | remote stub, such as GDBserver, may have some predefined or builtin | |
3480 | TSVs, even if the target is not running. */ | |
3481 | if (remote_get_trace_status (current_trace_status ()) != -1) | |
3482 | { | |
3483 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3484 | ||
3485 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3486 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3487 | } | |
3488 | ||
2d717e4f DJ |
3489 | /* Check whether the target is running now. */ |
3490 | putpkt ("?"); | |
3491 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3492 | ||
74531fed | 3493 | if (!non_stop) |
2d717e4f | 3494 | { |
e714e1bf UW |
3495 | ptid_t ptid; |
3496 | int fake_pid_p = 0; | |
3497 | struct inferior *inf; | |
3498 | ||
74531fed | 3499 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3500 | { |
04bd08de | 3501 | if (!extended_p) |
74531fed | 3502 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3503 | |
3504 | /* We're connected, but not running. Drop out before we | |
3505 | call start_remote. */ | |
e278ad5b | 3506 | rs->starting_up = 0; |
c35b1492 | 3507 | return; |
2d717e4f DJ |
3508 | } |
3509 | else | |
74531fed | 3510 | { |
74531fed PA |
3511 | /* Save the reply for later. */ |
3512 | wait_status = alloca (strlen (rs->buf) + 1); | |
3513 | strcpy (wait_status, rs->buf); | |
3514 | } | |
3515 | ||
3516 | /* Let the stub know that we want it to return the thread. */ | |
3517 | set_continue_thread (minus_one_ptid); | |
3518 | ||
3405876a | 3519 | add_current_inferior_and_thread (wait_status); |
74531fed | 3520 | |
6e586cc5 YQ |
3521 | /* init_wait_for_inferior should be called before get_offsets in order |
3522 | to manage `inserted' flag in bp loc in a correct state. | |
3523 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3524 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3525 | start_remote, set `inserted' flag to 1. In the initialization of | |
3526 | inferior, breakpoint_init_inferior should be called first, and then | |
3527 | breakpoint_re_set can be called. If this order is broken, state of | |
3528 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3529 | manipulation. */ | |
3530 | init_wait_for_inferior (); | |
3531 | ||
74531fed PA |
3532 | get_offsets (); /* Get text, data & bss offsets. */ |
3533 | ||
d962ef82 DJ |
3534 | /* If we could not find a description using qXfer, and we know |
3535 | how to do it some other way, try again. This is not | |
3536 | supported for non-stop; it could be, but it is tricky if | |
3537 | there are no stopped threads when we connect. */ | |
04bd08de | 3538 | if (remote_read_description_p (target) |
f5656ead | 3539 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3540 | { |
3541 | target_clear_description (); | |
3542 | target_find_description (); | |
3543 | } | |
3544 | ||
74531fed PA |
3545 | /* Use the previously fetched status. */ |
3546 | gdb_assert (wait_status != NULL); | |
3547 | strcpy (rs->buf, wait_status); | |
3548 | rs->cached_wait_status = 1; | |
3549 | ||
3550 | immediate_quit--; | |
04bd08de | 3551 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3552 | } |
3553 | else | |
3554 | { | |
68c97600 PA |
3555 | /* Clear WFI global state. Do this before finding about new |
3556 | threads and inferiors, and setting the current inferior. | |
3557 | Otherwise we would clear the proceed status of the current | |
3558 | inferior when we want its stop_soon state to be preserved | |
3559 | (see notice_new_inferior). */ | |
3560 | init_wait_for_inferior (); | |
3561 | ||
74531fed PA |
3562 | /* In non-stop, we will either get an "OK", meaning that there |
3563 | are no stopped threads at this time; or, a regular stop | |
3564 | reply. In the latter case, there may be more than one thread | |
3565 | stopped --- we pull them all out using the vStopped | |
3566 | mechanism. */ | |
3567 | if (strcmp (rs->buf, "OK") != 0) | |
3568 | { | |
722247f1 | 3569 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3570 | |
722247f1 YQ |
3571 | /* remote_notif_get_pending_replies acks this one, and gets |
3572 | the rest out. */ | |
f48ff2a7 | 3573 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3574 | = remote_notif_parse (notif, rs->buf); |
3575 | remote_notif_get_pending_events (notif); | |
c906108c | 3576 | |
74531fed PA |
3577 | /* Make sure that threads that were stopped remain |
3578 | stopped. */ | |
3579 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3580 | } | |
2d717e4f | 3581 | |
74531fed PA |
3582 | if (target_can_async_p ()) |
3583 | target_async (inferior_event_handler, 0); | |
c906108c | 3584 | |
74531fed PA |
3585 | if (thread_count () == 0) |
3586 | { | |
04bd08de | 3587 | if (!extended_p) |
74531fed | 3588 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3589 | |
c35b1492 PA |
3590 | /* We're connected, but not running. Drop out before we |
3591 | call start_remote. */ | |
e278ad5b | 3592 | rs->starting_up = 0; |
c35b1492 PA |
3593 | return; |
3594 | } | |
74531fed PA |
3595 | |
3596 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3597 | |
74531fed PA |
3598 | /* Force the stub to choose a thread. */ |
3599 | set_general_thread (null_ptid); | |
c906108c | 3600 | |
74531fed PA |
3601 | /* Query it. */ |
3602 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3603 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3604 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3605 | |
74531fed PA |
3606 | get_offsets (); /* Get text, data & bss offsets. */ |
3607 | ||
3608 | /* In non-stop mode, any cached wait status will be stored in | |
3609 | the stop reply queue. */ | |
3610 | gdb_assert (wait_status == NULL); | |
f0223081 | 3611 | |
2455069d UW |
3612 | /* Report all signals during attach/startup. */ |
3613 | remote_pass_signals (0, NULL); | |
74531fed | 3614 | } |
c8d104ad | 3615 | |
c8d104ad PA |
3616 | /* If we connected to a live target, do some additional setup. */ |
3617 | if (target_has_execution) | |
3618 | { | |
3619 | if (exec_bfd) /* No use without an exec file. */ | |
36d25514 | 3620 | remote_check_symbols (); |
c8d104ad | 3621 | } |
50c71eaf | 3622 | |
d5551862 SS |
3623 | /* Possibly the target has been engaged in a trace run started |
3624 | previously; find out where things are at. */ | |
26afc0d7 | 3625 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3626 | { |
00bf0b85 | 3627 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3628 | |
00bf0b85 SS |
3629 | if (current_trace_status ()->running) |
3630 | printf_filtered (_("Trace is already running on the target.\n")); | |
3631 | ||
00bf0b85 SS |
3632 | remote_upload_tracepoints (&uploaded_tps); |
3633 | ||
3634 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3635 | } |
3636 | ||
1e51243a PA |
3637 | /* The thread and inferior lists are now synchronized with the |
3638 | target, our symbols have been relocated, and we're merged the | |
3639 | target's tracepoints with ours. We're done with basic start | |
3640 | up. */ | |
3641 | rs->starting_up = 0; | |
3642 | ||
2567c7d9 | 3643 | /* If breakpoints are global, insert them now. */ |
f5656ead | 3644 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) |
50c71eaf PA |
3645 | && breakpoints_always_inserted_mode ()) |
3646 | insert_breakpoints (); | |
c906108c SS |
3647 | } |
3648 | ||
3649 | /* Open a connection to a remote debugger. | |
3650 | NAME is the filename used for communication. */ | |
3651 | ||
3652 | static void | |
fba45db2 | 3653 | remote_open (char *name, int from_tty) |
c906108c | 3654 | { |
75c99385 | 3655 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3656 | } |
3657 | ||
c906108c SS |
3658 | /* Open a connection to a remote debugger using the extended |
3659 | remote gdb protocol. NAME is the filename used for communication. */ | |
3660 | ||
3661 | static void | |
fba45db2 | 3662 | extended_remote_open (char *name, int from_tty) |
c906108c | 3663 | { |
75c99385 | 3664 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3665 | } |
3666 | ||
c906108c SS |
3667 | /* Generic code for opening a connection to a remote target. */ |
3668 | ||
d471ea57 AC |
3669 | static void |
3670 | init_all_packet_configs (void) | |
3671 | { | |
3672 | int i; | |
a744cf53 | 3673 | |
444abaca DJ |
3674 | for (i = 0; i < PACKET_MAX; i++) |
3675 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3676 | } |
3677 | ||
23860348 | 3678 | /* Symbol look-up. */ |
dc8acb97 MS |
3679 | |
3680 | static void | |
36d25514 | 3681 | remote_check_symbols (void) |
dc8acb97 | 3682 | { |
d01949b6 | 3683 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3684 | char *msg, *reply, *tmp; |
3685 | struct minimal_symbol *sym; | |
3686 | int end; | |
3687 | ||
63154eca PA |
3688 | /* The remote side has no concept of inferiors that aren't running |
3689 | yet, it only knows about running processes. If we're connected | |
3690 | but our current inferior is not running, we should not invite the | |
3691 | remote target to request symbol lookups related to its | |
3692 | (unrelated) current process. */ | |
3693 | if (!target_has_execution) | |
3694 | return; | |
3695 | ||
444abaca | 3696 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3697 | return; |
3698 | ||
63154eca PA |
3699 | /* Make sure the remote is pointing at the right process. Note |
3700 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3701 | set_general_process (); |
3702 | ||
6d820c5c DJ |
3703 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3704 | because we need both at the same time. */ | |
ea9c271d | 3705 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3706 | |
23860348 | 3707 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3708 | |
3709 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3710 | getpkt (&rs->buf, &rs->buf_size, 0); |
3711 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3712 | reply = rs->buf; |
dc8acb97 MS |
3713 | |
3714 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3715 | { | |
3716 | tmp = &reply[8]; | |
cfd77fa1 | 3717 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3718 | msg[end] = '\0'; |
3719 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3720 | if (sym == NULL) | |
ea9c271d | 3721 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3722 | else |
2bbe3cc1 | 3723 | { |
f5656ead | 3724 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
2bbe3cc1 DJ |
3725 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3726 | ||
3727 | /* If this is a function address, return the start of code | |
3728 | instead of any data function descriptor. */ | |
f5656ead | 3729 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3730 | sym_addr, |
3731 | ¤t_target); | |
3732 | ||
3733 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3734 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3735 | } |
3736 | ||
dc8acb97 | 3737 | putpkt (msg); |
6d820c5c | 3738 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3739 | reply = rs->buf; |
dc8acb97 MS |
3740 | } |
3741 | } | |
3742 | ||
9db8d71f DJ |
3743 | static struct serial * |
3744 | remote_serial_open (char *name) | |
3745 | { | |
3746 | static int udp_warning = 0; | |
3747 | ||
3748 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3749 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3750 | serial connection is reliable and not the serial connection promising | |
3751 | to be. */ | |
3752 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3753 | { | |
3e43a32a MS |
3754 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3755 | "Some events may be lost, rendering further debugging " | |
3756 | "impossible.")); | |
9db8d71f DJ |
3757 | udp_warning = 1; |
3758 | } | |
3759 | ||
3760 | return serial_open (name); | |
3761 | } | |
3762 | ||
d914c394 SS |
3763 | /* Inform the target of our permission settings. The permission flags |
3764 | work without this, but if the target knows the settings, it can do | |
3765 | a couple things. First, it can add its own check, to catch cases | |
3766 | that somehow manage to get by the permissions checks in target | |
3767 | methods. Second, if the target is wired to disallow particular | |
3768 | settings (for instance, a system in the field that is not set up to | |
3769 | be able to stop at a breakpoint), it can object to any unavailable | |
3770 | permissions. */ | |
3771 | ||
3772 | void | |
3773 | remote_set_permissions (void) | |
3774 | { | |
3775 | struct remote_state *rs = get_remote_state (); | |
3776 | ||
bba74b36 YQ |
3777 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3778 | "WriteReg:%x;WriteMem:%x;" | |
3779 | "InsertBreak:%x;InsertTrace:%x;" | |
3780 | "InsertFastTrace:%x;Stop:%x", | |
3781 | may_write_registers, may_write_memory, | |
3782 | may_insert_breakpoints, may_insert_tracepoints, | |
3783 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3784 | putpkt (rs->buf); |
3785 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3786 | ||
3787 | /* If the target didn't like the packet, warn the user. Do not try | |
3788 | to undo the user's settings, that would just be maddening. */ | |
3789 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3790 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3791 | } |
3792 | ||
be2a5f71 DJ |
3793 | /* This type describes each known response to the qSupported |
3794 | packet. */ | |
3795 | struct protocol_feature | |
3796 | { | |
3797 | /* The name of this protocol feature. */ | |
3798 | const char *name; | |
3799 | ||
3800 | /* The default for this protocol feature. */ | |
3801 | enum packet_support default_support; | |
3802 | ||
3803 | /* The function to call when this feature is reported, or after | |
3804 | qSupported processing if the feature is not supported. | |
3805 | The first argument points to this structure. The second | |
3806 | argument indicates whether the packet requested support be | |
3807 | enabled, disabled, or probed (or the default, if this function | |
3808 | is being called at the end of processing and this feature was | |
3809 | not reported). The third argument may be NULL; if not NULL, it | |
3810 | is a NUL-terminated string taken from the packet following | |
3811 | this feature's name and an equals sign. */ | |
3812 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3813 | const char *); | |
3814 | ||
3815 | /* The corresponding packet for this feature. Only used if | |
3816 | FUNC is remote_supported_packet. */ | |
3817 | int packet; | |
3818 | }; | |
3819 | ||
be2a5f71 DJ |
3820 | static void |
3821 | remote_supported_packet (const struct protocol_feature *feature, | |
3822 | enum packet_support support, | |
3823 | const char *argument) | |
3824 | { | |
3825 | if (argument) | |
3826 | { | |
3827 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3828 | " \"%s\"."), feature->name); | |
3829 | return; | |
3830 | } | |
3831 | ||
3832 | if (remote_protocol_packets[feature->packet].support | |
3833 | == PACKET_SUPPORT_UNKNOWN) | |
3834 | remote_protocol_packets[feature->packet].support = support; | |
3835 | } | |
be2a5f71 DJ |
3836 | |
3837 | static void | |
3838 | remote_packet_size (const struct protocol_feature *feature, | |
3839 | enum packet_support support, const char *value) | |
3840 | { | |
3841 | struct remote_state *rs = get_remote_state (); | |
3842 | ||
3843 | int packet_size; | |
3844 | char *value_end; | |
3845 | ||
3846 | if (support != PACKET_ENABLE) | |
3847 | return; | |
3848 | ||
3849 | if (value == NULL || *value == '\0') | |
3850 | { | |
3851 | warning (_("Remote target reported \"%s\" without a size."), | |
3852 | feature->name); | |
3853 | return; | |
3854 | } | |
3855 | ||
3856 | errno = 0; | |
3857 | packet_size = strtol (value, &value_end, 16); | |
3858 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3859 | { | |
3860 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3861 | feature->name, value); | |
3862 | return; | |
3863 | } | |
3864 | ||
3865 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3866 | { | |
3867 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3868 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3869 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3870 | } | |
3871 | ||
3872 | /* Record the new maximum packet size. */ | |
3873 | rs->explicit_packet_size = packet_size; | |
3874 | } | |
3875 | ||
82f73884 PA |
3876 | static void |
3877 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3878 | enum packet_support support, const char *value) | |
3879 | { | |
3880 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3881 | |
82f73884 PA |
3882 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3883 | } | |
3884 | ||
74531fed PA |
3885 | static void |
3886 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3887 | enum packet_support support, const char *value) | |
3888 | { | |
3889 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3890 | |
74531fed PA |
3891 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3892 | } | |
3893 | ||
782b2b07 SS |
3894 | static void |
3895 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3896 | enum packet_support support, | |
3897 | const char *value) | |
3898 | { | |
3899 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3900 | |
782b2b07 SS |
3901 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3902 | } | |
3903 | ||
3788aec7 LM |
3904 | static void |
3905 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3906 | enum packet_support support, | |
3907 | const char *value) | |
3908 | { | |
3909 | struct remote_state *rs = get_remote_state (); | |
3910 | ||
3911 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3912 | } | |
3913 | ||
d3ce09f5 SS |
3914 | static void |
3915 | remote_breakpoint_commands_feature (const struct protocol_feature *feature, | |
3916 | enum packet_support support, | |
3917 | const char *value) | |
3918 | { | |
3919 | struct remote_state *rs = get_remote_state (); | |
3920 | ||
3921 | rs->breakpoint_commands = (support == PACKET_ENABLE); | |
3922 | } | |
3923 | ||
7a697b8d SS |
3924 | static void |
3925 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3926 | enum packet_support support, | |
3927 | const char *value) | |
3928 | { | |
3929 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3930 | |
7a697b8d SS |
3931 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3932 | } | |
3933 | ||
0fb4aa4b PA |
3934 | static void |
3935 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3936 | enum packet_support support, | |
3937 | const char *value) | |
3938 | { | |
3939 | struct remote_state *rs = get_remote_state (); | |
3940 | ||
3941 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3942 | } | |
3943 | ||
1e4d1764 YQ |
3944 | static void |
3945 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3946 | enum packet_support support, | |
3947 | const char *value) | |
3948 | { | |
3949 | struct remote_state *rs = get_remote_state (); | |
3950 | ||
3951 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3952 | } | |
3953 | ||
d5551862 SS |
3954 | static void |
3955 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3956 | enum packet_support support, | |
3957 | const char *value) | |
3958 | { | |
3959 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3960 | |
d5551862 SS |
3961 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3962 | } | |
3963 | ||
d248b706 KY |
3964 | static void |
3965 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3966 | enum packet_support support, | |
3967 | const char *value) | |
3968 | { | |
3969 | struct remote_state *rs = get_remote_state (); | |
3970 | ||
3971 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3972 | } | |
3973 | ||
3065dfb6 SS |
3974 | static void |
3975 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3976 | enum packet_support support, | |
3977 | const char *value) | |
3978 | { | |
3979 | struct remote_state *rs = get_remote_state (); | |
3980 | ||
3981 | rs->string_tracing = (support == PACKET_ENABLE); | |
3982 | } | |
3983 | ||
ced63ec0 GB |
3984 | static void |
3985 | remote_augmented_libraries_svr4_read_feature | |
3986 | (const struct protocol_feature *feature, | |
3987 | enum packet_support support, const char *value) | |
3988 | { | |
3989 | struct remote_state *rs = get_remote_state (); | |
3990 | ||
3991 | rs->augmented_libraries_svr4_read = (support == PACKET_ENABLE); | |
3992 | } | |
3993 | ||
dc473cfb | 3994 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3995 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3996 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3997 | PACKET_qXfer_auxv }, |
23181151 DJ |
3998 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3999 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4000 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4001 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4002 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4003 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 GB |
4004 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4005 | remote_augmented_libraries_svr4_read_feature, -1 }, | |
fd79ecee | 4006 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4007 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4008 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4009 | PACKET_qXfer_spu_read }, | |
4010 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4011 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4012 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4013 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4014 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4015 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4016 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4017 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4018 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4019 | PACKET_QPassSignals }, | |
9b224c5e PA |
4020 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4021 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4022 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4023 | PACKET_QStartNoAckMode }, | |
82f73884 | 4024 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 4025 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
4026 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4027 | PACKET_qXfer_siginfo_read }, | |
4028 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4029 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
4030 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
4031 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
4032 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
4033 | PACKET_ConditionalBreakpoints }, | |
d3ce09f5 SS |
4034 | { "BreakpointCommands", PACKET_DISABLE, remote_breakpoint_commands_feature, |
4035 | PACKET_BreakpointCommands }, | |
7a697b8d SS |
4036 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
4037 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
4038 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
4039 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
4040 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
4041 | PACKET_InstallInTrace}, | |
d5551862 SS |
4042 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
4043 | -1 }, | |
40ab02ce MS |
4044 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4045 | PACKET_bc }, | |
4046 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4047 | PACKET_bs }, | |
409873ef SS |
4048 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4049 | PACKET_TracepointSource }, | |
d914c394 SS |
4050 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4051 | PACKET_QAllow }, | |
d248b706 KY |
4052 | { "EnableDisableTracepoints", PACKET_DISABLE, |
4053 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
4054 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4055 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4056 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4057 | PACKET_qXfer_uib }, | |
03583c20 UW |
4058 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4059 | PACKET_QDisableRandomization }, | |
d1feda86 | 4060 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4061 | { "QTBuffer:size", PACKET_DISABLE, |
4062 | remote_supported_packet, PACKET_QTBuffer_size}, | |
3065dfb6 SS |
4063 | { "tracenz", PACKET_DISABLE, |
4064 | remote_string_tracing_feature, -1 }, | |
9accd112 MM |
4065 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4066 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
4067 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, | |
4068 | PACKET_qXfer_btrace } | |
be2a5f71 DJ |
4069 | }; |
4070 | ||
c8d5aac9 L |
4071 | static char *remote_support_xml; |
4072 | ||
4073 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4074 | ||
4075 | void | |
6e39997a | 4076 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4077 | { |
4078 | #if defined(HAVE_LIBEXPAT) | |
4079 | if (remote_support_xml == NULL) | |
c4f7c687 | 4080 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4081 | else |
4082 | { | |
4083 | char *copy = xstrdup (remote_support_xml + 13); | |
4084 | char *p = strtok (copy, ","); | |
4085 | ||
4086 | do | |
4087 | { | |
4088 | if (strcmp (p, xml) == 0) | |
4089 | { | |
4090 | /* already there */ | |
4091 | xfree (copy); | |
4092 | return; | |
4093 | } | |
4094 | } | |
4095 | while ((p = strtok (NULL, ",")) != NULL); | |
4096 | xfree (copy); | |
4097 | ||
94b0dee1 PA |
4098 | remote_support_xml = reconcat (remote_support_xml, |
4099 | remote_support_xml, ",", xml, | |
4100 | (char *) NULL); | |
c8d5aac9 L |
4101 | } |
4102 | #endif | |
4103 | } | |
4104 | ||
4105 | static char * | |
4106 | remote_query_supported_append (char *msg, const char *append) | |
4107 | { | |
4108 | if (msg) | |
94b0dee1 | 4109 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4110 | else |
4111 | return xstrdup (append); | |
4112 | } | |
4113 | ||
be2a5f71 DJ |
4114 | static void |
4115 | remote_query_supported (void) | |
4116 | { | |
4117 | struct remote_state *rs = get_remote_state (); | |
4118 | char *next; | |
4119 | int i; | |
4120 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4121 | ||
4122 | /* The packet support flags are handled differently for this packet | |
4123 | than for most others. We treat an error, a disabled packet, and | |
4124 | an empty response identically: any features which must be reported | |
4125 | to be used will be automatically disabled. An empty buffer | |
4126 | accomplishes this, since that is also the representation for a list | |
4127 | containing no features. */ | |
4128 | ||
4129 | rs->buf[0] = 0; | |
4130 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
4131 | { | |
c8d5aac9 | 4132 | char *q = NULL; |
94b0dee1 | 4133 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4134 | |
901f9912 | 4135 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
4136 | |
4137 | if (remote_support_xml) | |
4138 | q = remote_query_supported_append (q, remote_support_xml); | |
4139 | ||
dde08ee1 PA |
4140 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4141 | ||
4142 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4143 | putpkt (q); | |
82f73884 | 4144 | |
94b0dee1 PA |
4145 | do_cleanups (old_chain); |
4146 | ||
be2a5f71 DJ |
4147 | getpkt (&rs->buf, &rs->buf_size, 0); |
4148 | ||
4149 | /* If an error occured, warn, but do not return - just reset the | |
4150 | buffer to empty and go on to disable features. */ | |
4151 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4152 | == PACKET_ERROR) | |
4153 | { | |
4154 | warning (_("Remote failure reply: %s"), rs->buf); | |
4155 | rs->buf[0] = 0; | |
4156 | } | |
4157 | } | |
4158 | ||
4159 | memset (seen, 0, sizeof (seen)); | |
4160 | ||
4161 | next = rs->buf; | |
4162 | while (*next) | |
4163 | { | |
4164 | enum packet_support is_supported; | |
4165 | char *p, *end, *name_end, *value; | |
4166 | ||
4167 | /* First separate out this item from the rest of the packet. If | |
4168 | there's another item after this, we overwrite the separator | |
4169 | (terminated strings are much easier to work with). */ | |
4170 | p = next; | |
4171 | end = strchr (p, ';'); | |
4172 | if (end == NULL) | |
4173 | { | |
4174 | end = p + strlen (p); | |
4175 | next = end; | |
4176 | } | |
4177 | else | |
4178 | { | |
89be2091 DJ |
4179 | *end = '\0'; |
4180 | next = end + 1; | |
4181 | ||
be2a5f71 DJ |
4182 | if (end == p) |
4183 | { | |
4184 | warning (_("empty item in \"qSupported\" response")); | |
4185 | continue; | |
4186 | } | |
be2a5f71 DJ |
4187 | } |
4188 | ||
4189 | name_end = strchr (p, '='); | |
4190 | if (name_end) | |
4191 | { | |
4192 | /* This is a name=value entry. */ | |
4193 | is_supported = PACKET_ENABLE; | |
4194 | value = name_end + 1; | |
4195 | *name_end = '\0'; | |
4196 | } | |
4197 | else | |
4198 | { | |
4199 | value = NULL; | |
4200 | switch (end[-1]) | |
4201 | { | |
4202 | case '+': | |
4203 | is_supported = PACKET_ENABLE; | |
4204 | break; | |
4205 | ||
4206 | case '-': | |
4207 | is_supported = PACKET_DISABLE; | |
4208 | break; | |
4209 | ||
4210 | case '?': | |
4211 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4212 | break; | |
4213 | ||
4214 | default: | |
3e43a32a MS |
4215 | warning (_("unrecognized item \"%s\" " |
4216 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4217 | continue; |
4218 | } | |
4219 | end[-1] = '\0'; | |
4220 | } | |
4221 | ||
4222 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4223 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4224 | { | |
4225 | const struct protocol_feature *feature; | |
4226 | ||
4227 | seen[i] = 1; | |
4228 | feature = &remote_protocol_features[i]; | |
4229 | feature->func (feature, is_supported, value); | |
4230 | break; | |
4231 | } | |
4232 | } | |
4233 | ||
4234 | /* If we increased the packet size, make sure to increase the global | |
4235 | buffer size also. We delay this until after parsing the entire | |
4236 | qSupported packet, because this is the same buffer we were | |
4237 | parsing. */ | |
4238 | if (rs->buf_size < rs->explicit_packet_size) | |
4239 | { | |
4240 | rs->buf_size = rs->explicit_packet_size; | |
4241 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4242 | } | |
4243 | ||
4244 | /* Handle the defaults for unmentioned features. */ | |
4245 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4246 | if (!seen[i]) | |
4247 | { | |
4248 | const struct protocol_feature *feature; | |
4249 | ||
4250 | feature = &remote_protocol_features[i]; | |
4251 | feature->func (feature, feature->default_support, NULL); | |
4252 | } | |
4253 | } | |
4254 | ||
78a095c3 JK |
4255 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4256 | on it so remove them first. */ | |
4257 | ||
4258 | static void | |
4259 | remote_unpush_target (void) | |
4260 | { | |
4261 | pop_all_targets_above (process_stratum - 1); | |
4262 | } | |
be2a5f71 | 4263 | |
c906108c | 4264 | static void |
3e43a32a MS |
4265 | remote_open_1 (char *name, int from_tty, |
4266 | struct target_ops *target, int extended_p) | |
c906108c | 4267 | { |
d01949b6 | 4268 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4269 | |
c906108c | 4270 | if (name == 0) |
8a3fe4f8 | 4271 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4272 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4273 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4274 | |
23860348 | 4275 | /* See FIXME above. */ |
c6ebd6cf | 4276 | if (!target_async_permitted) |
92d1e331 | 4277 | wait_forever_enabled_p = 1; |
6426a772 | 4278 | |
2d717e4f | 4279 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4280 | Ask this question first, before target_preopen has a chance to kill |
4281 | anything. */ | |
5d93a237 | 4282 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4283 | { |
78a095c3 JK |
4284 | if (from_tty |
4285 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4286 | error (_("Still connected.")); |
4287 | } | |
4288 | ||
78a095c3 | 4289 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4290 | target_preopen (from_tty); |
4291 | ||
89be2091 | 4292 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4293 | xfree (rs->last_pass_packet); |
4294 | rs->last_pass_packet = NULL; | |
89be2091 | 4295 | |
9b224c5e PA |
4296 | /* Make sure we send the program signals list the next time we |
4297 | resume. */ | |
5e4a05c4 TT |
4298 | xfree (rs->last_program_signals_packet); |
4299 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4300 | |
ad9a8f3f | 4301 | remote_fileio_reset (); |
1dd41f16 NS |
4302 | reopen_exec_file (); |
4303 | reread_symbols (); | |
4304 | ||
5d93a237 TT |
4305 | rs->remote_desc = remote_serial_open (name); |
4306 | if (!rs->remote_desc) | |
c906108c SS |
4307 | perror_with_name (name); |
4308 | ||
4309 | if (baud_rate != -1) | |
4310 | { | |
5d93a237 | 4311 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4312 | { |
9b74d5d3 KB |
4313 | /* The requested speed could not be set. Error out to |
4314 | top level after closing remote_desc. Take care to | |
4315 | set remote_desc to NULL to avoid closing remote_desc | |
4316 | more than once. */ | |
5d93a237 TT |
4317 | serial_close (rs->remote_desc); |
4318 | rs->remote_desc = NULL; | |
c906108c SS |
4319 | perror_with_name (name); |
4320 | } | |
4321 | } | |
4322 | ||
5d93a237 | 4323 | serial_raw (rs->remote_desc); |
c906108c SS |
4324 | |
4325 | /* If there is something sitting in the buffer we might take it as a | |
4326 | response to a command, which would be bad. */ | |
5d93a237 | 4327 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4328 | |
4329 | if (from_tty) | |
4330 | { | |
4331 | puts_filtered ("Remote debugging using "); | |
4332 | puts_filtered (name); | |
4333 | puts_filtered ("\n"); | |
4334 | } | |
23860348 | 4335 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4336 | |
74531fed PA |
4337 | /* Register extra event sources in the event loop. */ |
4338 | remote_async_inferior_event_token | |
4339 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4340 | NULL); | |
5965e028 | 4341 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4342 | |
be2a5f71 DJ |
4343 | /* Reset the target state; these things will be queried either by |
4344 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4345 | init_all_packet_configs (); |
74531fed | 4346 | rs->cached_wait_status = 0; |
be2a5f71 | 4347 | rs->explicit_packet_size = 0; |
a6f3e723 | 4348 | rs->noack_mode = 0; |
82f73884 PA |
4349 | rs->multi_process_aware = 0; |
4350 | rs->extended = extended_p; | |
74531fed | 4351 | rs->non_stop_aware = 0; |
e24a49d8 | 4352 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4353 | rs->ctrlc_pending_p = 0; |
802188a7 | 4354 | |
47f8a51d TT |
4355 | rs->general_thread = not_sent_ptid; |
4356 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4357 | rs->remote_traceframe_number = -1; |
c906108c | 4358 | |
9d1f7ab2 | 4359 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4360 | rs->use_threadinfo_query = 1; |
4361 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4362 | |
c6ebd6cf | 4363 | if (target_async_permitted) |
92d1e331 | 4364 | { |
23860348 | 4365 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4366 | remote_async_terminal_ours_p = 1; |
4367 | ||
4368 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4369 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4370 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4371 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4372 | around this. Eventually a mechanism that allows |
92d1e331 | 4373 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4374 | implemented. */ |
92d1e331 DJ |
4375 | wait_forever_enabled_p = 0; |
4376 | } | |
4377 | ||
23860348 | 4378 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4379 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4380 | |
74531fed PA |
4381 | /* Start afresh. */ |
4382 | init_thread_list (); | |
4383 | ||
36918e70 | 4384 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4385 | target (we'd otherwise be in an inconsistent state) and then |
4386 | propogate the error on up the exception chain. This ensures that | |
4387 | the caller doesn't stumble along blindly assuming that the | |
4388 | function succeeded. The CLI doesn't have this problem but other | |
4389 | UI's, such as MI do. | |
36918e70 AC |
4390 | |
4391 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4392 | this function should return an error indication letting the | |
ce2826aa | 4393 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4394 | ``target remote'' is directly wired to this function making that |
4395 | impossible. On a positive note, the CLI side of this problem has | |
4396 | been fixed - the function set_cmd_context() makes it possible for | |
4397 | all the ``target ....'' commands to share a common callback | |
4398 | function. See cli-dump.c. */ | |
109c3e39 | 4399 | { |
04bd08de | 4400 | volatile struct gdb_exception ex; |
2d717e4f | 4401 | |
04bd08de TT |
4402 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4403 | { | |
4404 | remote_start_remote (from_tty, target, extended_p); | |
4405 | } | |
109c3e39 AC |
4406 | if (ex.reason < 0) |
4407 | { | |
c8d104ad PA |
4408 | /* Pop the partially set up target - unless something else did |
4409 | already before throwing the exception. */ | |
5d93a237 | 4410 | if (rs->remote_desc != NULL) |
78a095c3 | 4411 | remote_unpush_target (); |
c6ebd6cf | 4412 | if (target_async_permitted) |
109c3e39 AC |
4413 | wait_forever_enabled_p = 1; |
4414 | throw_exception (ex); | |
4415 | } | |
4416 | } | |
c906108c | 4417 | |
c6ebd6cf | 4418 | if (target_async_permitted) |
92d1e331 | 4419 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4420 | } |
4421 | ||
c906108c SS |
4422 | /* This takes a program previously attached to and detaches it. After |
4423 | this is done, GDB can be used to debug some other program. We | |
4424 | better not have left any breakpoints in the target program or it'll | |
4425 | die when it hits one. */ | |
4426 | ||
4427 | static void | |
2d717e4f | 4428 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4429 | { |
82f73884 | 4430 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4431 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4432 | |
4433 | if (args) | |
8a3fe4f8 | 4434 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4435 | |
2d717e4f DJ |
4436 | if (!target_has_execution) |
4437 | error (_("No process to detach from.")); | |
4438 | ||
7cee1e54 PA |
4439 | if (from_tty) |
4440 | { | |
4441 | char *exec_file = get_exec_file (0); | |
4442 | if (exec_file == NULL) | |
4443 | exec_file = ""; | |
4444 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4445 | target_pid_to_str (pid_to_ptid (pid))); | |
4446 | gdb_flush (gdb_stdout); | |
4447 | } | |
4448 | ||
c906108c | 4449 | /* Tell the remote target to detach. */ |
82f73884 | 4450 | if (remote_multi_process_p (rs)) |
bba74b36 | 4451 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4452 | else |
4453 | strcpy (rs->buf, "D"); | |
4454 | ||
4ddda9b5 PA |
4455 | putpkt (rs->buf); |
4456 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4457 | ||
82f73884 PA |
4458 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4459 | ; | |
4460 | else if (rs->buf[0] == '\0') | |
4461 | error (_("Remote doesn't know how to detach")); | |
4462 | else | |
4ddda9b5 | 4463 | error (_("Can't detach process.")); |
c906108c | 4464 | |
7cee1e54 PA |
4465 | if (from_tty && !extended) |
4466 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4467 | |
82f73884 | 4468 | target_mourn_inferior (); |
2d717e4f DJ |
4469 | } |
4470 | ||
4471 | static void | |
136d6dae | 4472 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4473 | { |
4474 | remote_detach_1 (args, from_tty, 0); | |
4475 | } | |
4476 | ||
4477 | static void | |
136d6dae | 4478 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4479 | { |
4480 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4481 | } |
4482 | ||
6ad8ae5c DJ |
4483 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4484 | ||
43ff13b4 | 4485 | static void |
597320e7 | 4486 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4487 | { |
43ff13b4 | 4488 | if (args) |
2d717e4f | 4489 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4490 | |
2d717e4f DJ |
4491 | /* Make sure we unpush even the extended remote targets; mourn |
4492 | won't do it. So call remote_mourn_1 directly instead of | |
4493 | target_mourn_inferior. */ | |
4494 | remote_mourn_1 (target); | |
4495 | ||
43ff13b4 JM |
4496 | if (from_tty) |
4497 | puts_filtered ("Ending remote debugging.\n"); | |
4498 | } | |
4499 | ||
2d717e4f DJ |
4500 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4501 | be chatty about it. */ | |
4502 | ||
4503 | static void | |
4504 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4505 | { | |
4506 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4507 | int pid; |
96ef3384 | 4508 | char *wait_status = NULL; |
2d717e4f | 4509 | |
74164c56 | 4510 | pid = parse_pid_to_attach (args); |
2d717e4f | 4511 | |
74164c56 JK |
4512 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4513 | way as in other targets. */ | |
2d717e4f DJ |
4514 | |
4515 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4516 | error (_("This target does not support attaching to a process")); | |
4517 | ||
7cee1e54 PA |
4518 | if (from_tty) |
4519 | { | |
4520 | char *exec_file = get_exec_file (0); | |
4521 | ||
4522 | if (exec_file) | |
4523 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4524 | target_pid_to_str (pid_to_ptid (pid))); | |
4525 | else | |
4526 | printf_unfiltered (_("Attaching to %s\n"), | |
4527 | target_pid_to_str (pid_to_ptid (pid))); | |
4528 | ||
4529 | gdb_flush (gdb_stdout); | |
4530 | } | |
4531 | ||
bba74b36 | 4532 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4533 | putpkt (rs->buf); |
4534 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4535 | ||
3e43a32a MS |
4536 | if (packet_ok (rs->buf, |
4537 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4538 | { |
74531fed PA |
4539 | if (!non_stop) |
4540 | { | |
4541 | /* Save the reply for later. */ | |
4542 | wait_status = alloca (strlen (rs->buf) + 1); | |
4543 | strcpy (wait_status, rs->buf); | |
4544 | } | |
4545 | else if (strcmp (rs->buf, "OK") != 0) | |
4546 | error (_("Attaching to %s failed with: %s"), | |
4547 | target_pid_to_str (pid_to_ptid (pid)), | |
4548 | rs->buf); | |
2d717e4f DJ |
4549 | } |
4550 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4551 | error (_("This target does not support attaching to a process")); | |
4552 | else | |
4553 | error (_("Attaching to %s failed"), | |
4554 | target_pid_to_str (pid_to_ptid (pid))); | |
4555 | ||
49c62f2e | 4556 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4557 | |
2d717e4f | 4558 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4559 | |
bad34192 PA |
4560 | if (non_stop) |
4561 | { | |
4562 | struct thread_info *thread; | |
79d7f229 | 4563 | |
bad34192 PA |
4564 | /* Get list of threads. */ |
4565 | remote_threads_info (target); | |
82f73884 | 4566 | |
bad34192 PA |
4567 | thread = first_thread_of_process (pid); |
4568 | if (thread) | |
4569 | inferior_ptid = thread->ptid; | |
4570 | else | |
4571 | inferior_ptid = pid_to_ptid (pid); | |
4572 | ||
4573 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4574 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4575 | } |
74531fed | 4576 | else |
bad34192 PA |
4577 | { |
4578 | /* Now, if we have thread information, update inferior_ptid. */ | |
4579 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4580 | ||
4581 | /* Add the main thread to the thread list. */ | |
4582 | add_thread_silent (inferior_ptid); | |
4583 | } | |
c0a2216e | 4584 | |
96ef3384 UW |
4585 | /* Next, if the target can specify a description, read it. We do |
4586 | this before anything involving memory or registers. */ | |
4587 | target_find_description (); | |
4588 | ||
74531fed PA |
4589 | if (!non_stop) |
4590 | { | |
4591 | /* Use the previously fetched status. */ | |
4592 | gdb_assert (wait_status != NULL); | |
4593 | ||
4594 | if (target_can_async_p ()) | |
4595 | { | |
722247f1 YQ |
4596 | struct notif_event *reply |
4597 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4598 | |
722247f1 | 4599 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
4600 | |
4601 | target_async (inferior_event_handler, 0); | |
4602 | } | |
4603 | else | |
4604 | { | |
4605 | gdb_assert (wait_status != NULL); | |
4606 | strcpy (rs->buf, wait_status); | |
4607 | rs->cached_wait_status = 1; | |
4608 | } | |
4609 | } | |
4610 | else | |
4611 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4612 | } |
4613 | ||
4614 | static void | |
136d6dae | 4615 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4616 | { |
136d6dae | 4617 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4618 | } |
4619 | ||
c906108c SS |
4620 | /* Convert hex digit A to a number. */ |
4621 | ||
30559e10 | 4622 | static int |
fba45db2 | 4623 | fromhex (int a) |
c906108c SS |
4624 | { |
4625 | if (a >= '0' && a <= '9') | |
4626 | return a - '0'; | |
4627 | else if (a >= 'a' && a <= 'f') | |
4628 | return a - 'a' + 10; | |
4629 | else if (a >= 'A' && a <= 'F') | |
4630 | return a - 'A' + 10; | |
c5aa993b | 4631 | else |
8a3fe4f8 | 4632 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4633 | } |
4634 | ||
00bf0b85 | 4635 | int |
cfd77fa1 | 4636 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4637 | { |
4638 | int i; | |
4639 | ||
30559e10 MS |
4640 | for (i = 0; i < count; i++) |
4641 | { | |
4642 | if (hex[0] == 0 || hex[1] == 0) | |
4643 | { | |
4644 | /* Hex string is short, or of uneven length. | |
23860348 | 4645 | Return the count that has been converted so far. */ |
30559e10 MS |
4646 | return i; |
4647 | } | |
4648 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4649 | hex += 2; | |
4650 | } | |
4651 | return i; | |
4652 | } | |
4653 | ||
c906108c SS |
4654 | /* Convert number NIB to a hex digit. */ |
4655 | ||
4656 | static int | |
fba45db2 | 4657 | tohex (int nib) |
c906108c SS |
4658 | { |
4659 | if (nib < 10) | |
c5aa993b | 4660 | return '0' + nib; |
c906108c | 4661 | else |
c5aa993b | 4662 | return 'a' + nib - 10; |
c906108c | 4663 | } |
30559e10 | 4664 | |
00bf0b85 | 4665 | int |
cfd77fa1 | 4666 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4667 | { |
4668 | int i; | |
a744cf53 | 4669 | |
23860348 | 4670 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4671 | if (count == 0) |
cfd77fa1 | 4672 | count = strlen ((char *) bin); |
30559e10 MS |
4673 | |
4674 | for (i = 0; i < count; i++) | |
4675 | { | |
4676 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4677 | *hex++ = tohex (*bin++ & 0xf); | |
4678 | } | |
4679 | *hex = 0; | |
4680 | return i; | |
4681 | } | |
c906108c | 4682 | \f |
506fb367 DJ |
4683 | /* Check for the availability of vCont. This function should also check |
4684 | the response. */ | |
c906108c SS |
4685 | |
4686 | static void | |
6d820c5c | 4687 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4688 | { |
2e9f7625 | 4689 | char *buf; |
6d820c5c | 4690 | |
2e9f7625 DJ |
4691 | strcpy (rs->buf, "vCont?"); |
4692 | putpkt (rs->buf); | |
6d820c5c | 4693 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4694 | buf = rs->buf; |
c906108c | 4695 | |
506fb367 DJ |
4696 | /* Make sure that the features we assume are supported. */ |
4697 | if (strncmp (buf, "vCont", 5) == 0) | |
4698 | { | |
4699 | char *p = &buf[5]; | |
4700 | int support_s, support_S, support_c, support_C; | |
4701 | ||
4702 | support_s = 0; | |
4703 | support_S = 0; | |
4704 | support_c = 0; | |
4705 | support_C = 0; | |
d458bd84 | 4706 | rs->supports_vCont.t = 0; |
c1e36e3e | 4707 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4708 | while (p && *p == ';') |
4709 | { | |
4710 | p++; | |
4711 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4712 | support_s = 1; | |
4713 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4714 | support_S = 1; | |
4715 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4716 | support_c = 1; | |
4717 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4718 | support_C = 1; | |
74531fed | 4719 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4720 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4721 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4722 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4723 | |
4724 | p = strchr (p, ';'); | |
4725 | } | |
c906108c | 4726 | |
506fb367 DJ |
4727 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4728 | BUF will make packet_ok disable the packet. */ | |
4729 | if (!support_s || !support_S || !support_c || !support_C) | |
4730 | buf[0] = 0; | |
4731 | } | |
c906108c | 4732 | |
444abaca | 4733 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4734 | } |
c906108c | 4735 | |
0d8f58ca PA |
4736 | /* Helper function for building "vCont" resumptions. Write a |
4737 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4738 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4739 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4740 | resumed thread should be single-stepped and/or signalled. If PTID | |
4741 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4742 | represents a process, then all threads of the process are resumed; | |
4743 | the thread to be stepped and/or signalled is given in the global | |
4744 | INFERIOR_PTID. */ | |
4745 | ||
4746 | static char * | |
4747 | append_resumption (char *p, char *endp, | |
2ea28649 | 4748 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4749 | { |
4750 | struct remote_state *rs = get_remote_state (); | |
4751 | ||
a493e3e2 | 4752 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4753 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4754 | else if (step |
4755 | /* GDB is willing to range step. */ | |
4756 | && use_range_stepping | |
4757 | /* Target supports range stepping. */ | |
4758 | && rs->supports_vCont.r | |
4759 | /* We don't currently support range stepping multiple | |
4760 | threads with a wildcard (though the protocol allows it, | |
4761 | so stubs shouldn't make an active effort to forbid | |
4762 | it). */ | |
4763 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4764 | { | |
4765 | struct thread_info *tp; | |
4766 | ||
4767 | if (ptid_equal (ptid, minus_one_ptid)) | |
4768 | { | |
4769 | /* If we don't know about the target thread's tid, then | |
4770 | we're resuming magic_null_ptid (see caller). */ | |
4771 | tp = find_thread_ptid (magic_null_ptid); | |
4772 | } | |
4773 | else | |
4774 | tp = find_thread_ptid (ptid); | |
4775 | gdb_assert (tp != NULL); | |
4776 | ||
4777 | if (tp->control.may_range_step) | |
4778 | { | |
4779 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4780 | ||
4781 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4782 | phex_nz (tp->control.step_range_start, | |
4783 | addr_size), | |
4784 | phex_nz (tp->control.step_range_end, | |
4785 | addr_size)); | |
4786 | } | |
4787 | else | |
4788 | p += xsnprintf (p, endp - p, ";s"); | |
4789 | } | |
0d8f58ca PA |
4790 | else if (step) |
4791 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4792 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4793 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4794 | else | |
4795 | p += xsnprintf (p, endp - p, ";c"); | |
4796 | ||
4797 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4798 | { | |
4799 | ptid_t nptid; | |
4800 | ||
4801 | /* All (-1) threads of process. */ | |
4802 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4803 | ||
4804 | p += xsnprintf (p, endp - p, ":"); | |
4805 | p = write_ptid (p, endp, nptid); | |
4806 | } | |
4807 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4808 | { | |
4809 | p += xsnprintf (p, endp - p, ":"); | |
4810 | p = write_ptid (p, endp, ptid); | |
4811 | } | |
4812 | ||
4813 | return p; | |
4814 | } | |
4815 | ||
e5ef252a PA |
4816 | /* Append a vCont continue-with-signal action for threads that have a |
4817 | non-zero stop signal. */ | |
4818 | ||
4819 | static char * | |
4820 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4821 | { | |
4822 | struct thread_info *thread; | |
4823 | ||
4824 | ALL_THREADS (thread) | |
4825 | if (ptid_match (thread->ptid, ptid) | |
4826 | && !ptid_equal (inferior_ptid, thread->ptid) | |
4827 | && thread->suspend.stop_signal != GDB_SIGNAL_0 | |
4828 | && signal_pass_state (thread->suspend.stop_signal)) | |
4829 | { | |
4830 | p = append_resumption (p, endp, thread->ptid, | |
4831 | 0, thread->suspend.stop_signal); | |
4832 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4833 | } | |
4834 | ||
4835 | return p; | |
4836 | } | |
4837 | ||
506fb367 DJ |
4838 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4839 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4840 | resumed thread should be single-stepped and/or signalled. If PTID |
4841 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4842 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4843 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4844 | |
506fb367 DJ |
4845 | This function issues a strict subset of all possible vCont commands at the |
4846 | moment. */ | |
44eaed12 | 4847 | |
506fb367 | 4848 | static int |
2ea28649 | 4849 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4850 | { |
4851 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4852 | char *p; |
4853 | char *endp; | |
44eaed12 | 4854 | |
444abaca | 4855 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4856 | remote_vcont_probe (rs); |
44eaed12 | 4857 | |
444abaca | 4858 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4859 | return 0; |
44eaed12 | 4860 | |
82f73884 PA |
4861 | p = rs->buf; |
4862 | endp = rs->buf + get_remote_packet_size (); | |
4863 | ||
506fb367 DJ |
4864 | /* If we could generate a wider range of packets, we'd have to worry |
4865 | about overflowing BUF. Should there be a generic | |
4866 | "multi-part-packet" packet? */ | |
4867 | ||
0d8f58ca PA |
4868 | p += xsnprintf (p, endp - p, "vCont"); |
4869 | ||
79d7f229 | 4870 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4871 | { |
79d7f229 PA |
4872 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4873 | so we don't have any TID numbers the inferior will | |
4874 | understand. Make sure to only send forms that do not specify | |
4875 | a TID. */ | |
a9cbf802 | 4876 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4877 | } |
0d8f58ca | 4878 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4879 | { |
0d8f58ca PA |
4880 | /* Resume all threads (of all processes, or of a single |
4881 | process), with preference for INFERIOR_PTID. This assumes | |
4882 | inferior_ptid belongs to the set of all threads we are about | |
4883 | to resume. */ | |
a493e3e2 | 4884 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4885 | { |
0d8f58ca PA |
4886 | /* Step inferior_ptid, with or without signal. */ |
4887 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4888 | } |
0d8f58ca | 4889 | |
e5ef252a PA |
4890 | /* Also pass down any pending signaled resumption for other |
4891 | threads not the current. */ | |
4892 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4893 | ||
0d8f58ca | 4894 | /* And continue others without a signal. */ |
a493e3e2 | 4895 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4896 | } |
4897 | else | |
506fb367 DJ |
4898 | { |
4899 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4900 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4901 | } |
c906108c | 4902 | |
82f73884 PA |
4903 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4904 | putpkt (rs->buf); | |
506fb367 | 4905 | |
74531fed PA |
4906 | if (non_stop) |
4907 | { | |
4908 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4909 | reply will be reported asynchronously by means of a `%Stop' | |
4910 | notification. */ | |
4911 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4912 | if (strcmp (rs->buf, "OK") != 0) | |
4913 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4914 | } | |
4915 | ||
506fb367 | 4916 | return 1; |
c906108c | 4917 | } |
43ff13b4 | 4918 | |
506fb367 DJ |
4919 | /* Tell the remote machine to resume. */ |
4920 | ||
43ff13b4 | 4921 | static void |
28439f5e | 4922 | remote_resume (struct target_ops *ops, |
2ea28649 | 4923 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4924 | { |
d01949b6 | 4925 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4926 | char *buf; |
43ff13b4 | 4927 | |
722247f1 YQ |
4928 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
4929 | (explained in remote-notif.c:handle_notification) so | |
4930 | remote_notif_process is not called. We need find a place where | |
4931 | it is safe to start a 'vNotif' sequence. It is good to do it | |
4932 | before resuming inferior, because inferior was stopped and no RSP | |
4933 | traffic at that moment. */ | |
4934 | if (!non_stop) | |
5965e028 | 4935 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 4936 | |
b73be471 | 4937 | rs->last_sent_signal = siggnal; |
280ceea3 | 4938 | rs->last_sent_step = step; |
43ff13b4 | 4939 | |
506fb367 | 4940 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4941 | /* No reverse support (yet) for vCont. */ |
4942 | if (execution_direction != EXEC_REVERSE) | |
4943 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4944 | goto done; | |
506fb367 | 4945 | |
79d7f229 PA |
4946 | /* All other supported resume packets do use Hc, so set the continue |
4947 | thread. */ | |
4948 | if (ptid_equal (ptid, minus_one_ptid)) | |
4949 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4950 | else |
79d7f229 | 4951 | set_continue_thread (ptid); |
506fb367 | 4952 | |
2e9f7625 | 4953 | buf = rs->buf; |
b2175913 MS |
4954 | if (execution_direction == EXEC_REVERSE) |
4955 | { | |
4956 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 4957 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 4958 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4959 | siggnal); |
40ab02ce MS |
4960 | |
4961 | if (step | |
4962 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4963 | error (_("Remote reverse-step not supported.")); | |
4964 | if (!step | |
4965 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4966 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4967 | |
b2175913 MS |
4968 | strcpy (buf, step ? "bs" : "bc"); |
4969 | } | |
a493e3e2 | 4970 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
4971 | { |
4972 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4973 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4974 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4975 | buf[3] = '\0'; |
4976 | } | |
4977 | else | |
c5aa993b | 4978 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4979 | |
44eaed12 | 4980 | putpkt (buf); |
43ff13b4 | 4981 | |
75c99385 | 4982 | done: |
2acceee2 | 4983 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4984 | with the event loop. NOTE: this is the one place where all the |
4985 | execution commands end up. We could alternatively do this in each | |
23860348 | 4986 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4987 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4988 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4989 | NOT asynchronously. */ |
362646f5 | 4990 | if (target_can_async_p ()) |
2acceee2 | 4991 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4992 | |
4993 | /* We've just told the target to resume. The remote server will | |
4994 | wait for the inferior to stop, and then send a stop reply. In | |
4995 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4996 | because the stub wouldn't be ready to process it. This applies |
4997 | only to the base all-stop protocol, however. In non-stop (which | |
4998 | only supports vCont), the stub replies with an "OK", and is | |
4999 | immediate able to process further serial input. */ | |
5000 | if (!non_stop) | |
5001 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 5002 | } |
c906108c | 5003 | \f |
43ff13b4 JM |
5004 | |
5005 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5006 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5007 | static void |
934b9bac | 5008 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5009 | { |
934b9bac | 5010 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5011 | } |
5012 | ||
23860348 | 5013 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5014 | static void |
934b9bac | 5015 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5016 | { |
934b9bac JK |
5017 | signal (sig, async_handle_remote_sigint_twice); |
5018 | mark_async_signal_handler (async_sigint_remote_token); | |
43ff13b4 JM |
5019 | } |
5020 | ||
5021 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5022 | sent once. It will take effect the second time that the user sends | |
23860348 | 5023 | a ^C. */ |
43ff13b4 | 5024 | static void |
934b9bac | 5025 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5026 | { |
934b9bac JK |
5027 | signal (sig, async_handle_remote_sigint); |
5028 | mark_async_signal_handler (async_sigint_remote_twice_token); | |
43ff13b4 JM |
5029 | } |
5030 | ||
6426a772 | 5031 | /* Perform the real interruption of the target execution, in response |
23860348 | 5032 | to a ^C. */ |
c5aa993b | 5033 | static void |
fba45db2 | 5034 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5035 | { |
5036 | if (remote_debug) | |
248fd3bf | 5037 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5038 | |
94cc34af | 5039 | target_stop (inferior_ptid); |
43ff13b4 JM |
5040 | } |
5041 | ||
0df8b418 | 5042 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5043 | up on the target alltogether. */ |
47e1ce27 | 5044 | static void |
fba45db2 | 5045 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5046 | { |
2df3850c | 5047 | if (remote_debug) |
248fd3bf | 5048 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5049 | |
5050 | interrupt_query (); | |
43ff13b4 JM |
5051 | } |
5052 | ||
5053 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5054 | stopped. */ |
6426a772 | 5055 | static void |
934b9bac | 5056 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5057 | { |
5058 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5059 | } |
5060 | ||
c906108c SS |
5061 | /* Send ^C to target to halt it. Target will respond, and send us a |
5062 | packet. */ | |
507f3c78 | 5063 | static void (*ofunc) (int); |
c906108c | 5064 | |
0df8b418 MS |
5065 | /* The command line interface's stop routine. This function is installed |
5066 | as a signal handler for SIGINT. The first time a user requests a | |
5067 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 5068 | response from the target (it didn't stop when the user requested it), |
23860348 | 5069 | we ask the user if he'd like to detach from the target. */ |
c906108c | 5070 | static void |
934b9bac | 5071 | sync_remote_interrupt (int signo) |
c906108c | 5072 | { |
23860348 | 5073 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5074 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5075 | |
934b9bac | 5076 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5077 | } |
5078 | ||
5079 | /* The user typed ^C twice. */ | |
5080 | ||
5081 | static void | |
934b9bac | 5082 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5083 | { |
5084 | signal (signo, ofunc); | |
934b9bac JK |
5085 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5086 | signal (signo, sync_remote_interrupt); | |
c906108c | 5087 | } |
7a292a7a | 5088 | |
74531fed PA |
5089 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5090 | thread, all threads of a remote process, or all threads of all | |
5091 | processes. */ | |
5092 | ||
5093 | static void | |
5094 | remote_stop_ns (ptid_t ptid) | |
5095 | { | |
5096 | struct remote_state *rs = get_remote_state (); | |
5097 | char *p = rs->buf; | |
5098 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
5099 | |
5100 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
5101 | remote_vcont_probe (rs); | |
5102 | ||
d458bd84 | 5103 | if (!rs->supports_vCont.t) |
74531fed PA |
5104 | error (_("Remote server does not support stopping threads")); |
5105 | ||
f91d3df5 PA |
5106 | if (ptid_equal (ptid, minus_one_ptid) |
5107 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5108 | p += xsnprintf (p, endp - p, "vCont;t"); |
5109 | else | |
5110 | { | |
5111 | ptid_t nptid; | |
5112 | ||
74531fed PA |
5113 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5114 | ||
5115 | if (ptid_is_pid (ptid)) | |
5116 | /* All (-1) threads of process. */ | |
5117 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
5118 | else | |
5119 | { | |
5120 | /* Small optimization: if we already have a stop reply for | |
5121 | this thread, no use in telling the stub we want this | |
5122 | stopped. */ | |
5123 | if (peek_stop_reply (ptid)) | |
5124 | return; | |
5125 | ||
5126 | nptid = ptid; | |
5127 | } | |
5128 | ||
a9cbf802 | 5129 | write_ptid (p, endp, nptid); |
74531fed PA |
5130 | } |
5131 | ||
5132 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5133 | come in asynchronously by notification. */ | |
5134 | putpkt (rs->buf); | |
5135 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5136 | if (strcmp (rs->buf, "OK") != 0) | |
5137 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5138 | } | |
5139 | ||
5140 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5141 | remote target. It is undefined which thread of which process | |
5142 | reports the stop. */ | |
5143 | ||
5144 | static void | |
5145 | remote_stop_as (ptid_t ptid) | |
5146 | { | |
5147 | struct remote_state *rs = get_remote_state (); | |
5148 | ||
3a29589a DJ |
5149 | rs->ctrlc_pending_p = 1; |
5150 | ||
74531fed PA |
5151 | /* If the inferior is stopped already, but the core didn't know |
5152 | about it yet, just ignore the request. The cached wait status | |
5153 | will be collected in remote_wait. */ | |
5154 | if (rs->cached_wait_status) | |
5155 | return; | |
5156 | ||
9a7071a8 JB |
5157 | /* Send interrupt_sequence to remote target. */ |
5158 | send_interrupt_sequence (); | |
74531fed PA |
5159 | } |
5160 | ||
0df8b418 | 5161 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5162 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5163 | will eventually end up here. */ |
74531fed | 5164 | |
c906108c | 5165 | static void |
94cc34af | 5166 | remote_stop (ptid_t ptid) |
c906108c | 5167 | { |
7a292a7a | 5168 | if (remote_debug) |
0f71a2f6 | 5169 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5170 | |
74531fed PA |
5171 | if (non_stop) |
5172 | remote_stop_ns (ptid); | |
c906108c | 5173 | else |
74531fed | 5174 | remote_stop_as (ptid); |
c906108c SS |
5175 | } |
5176 | ||
5177 | /* Ask the user what to do when an interrupt is received. */ | |
5178 | ||
5179 | static void | |
fba45db2 | 5180 | interrupt_query (void) |
c906108c SS |
5181 | { |
5182 | target_terminal_ours (); | |
5183 | ||
74531fed | 5184 | if (target_can_async_p ()) |
c906108c | 5185 | { |
74531fed | 5186 | signal (SIGINT, handle_sigint); |
039e3c22 | 5187 | quit (); |
c906108c | 5188 | } |
74531fed PA |
5189 | else |
5190 | { | |
9e2f0ad4 HZ |
5191 | if (query (_("Interrupted while waiting for the program.\n\ |
5192 | Give up (and stop debugging it)? "))) | |
74531fed | 5193 | { |
78a095c3 | 5194 | remote_unpush_target (); |
039e3c22 | 5195 | quit (); |
74531fed PA |
5196 | } |
5197 | } | |
c906108c SS |
5198 | |
5199 | target_terminal_inferior (); | |
5200 | } | |
5201 | ||
6426a772 JM |
5202 | /* Enable/disable target terminal ownership. Most targets can use |
5203 | terminal groups to control terminal ownership. Remote targets are | |
5204 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5205 | is required. */ |
6426a772 JM |
5206 | |
5207 | static void | |
75c99385 | 5208 | remote_terminal_inferior (void) |
6426a772 | 5209 | { |
c6ebd6cf | 5210 | if (!target_async_permitted) |
75c99385 PA |
5211 | /* Nothing to do. */ |
5212 | return; | |
5213 | ||
d9d2d8b6 PA |
5214 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5215 | idempotent. The event-loop GDB talking to an asynchronous target | |
5216 | with a synchronous command calls this function from both | |
5217 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5218 | transfer the terminal to the target when it shouldn't this guard | |
5219 | can go away. */ | |
6426a772 JM |
5220 | if (!remote_async_terminal_ours_p) |
5221 | return; | |
5222 | delete_file_handler (input_fd); | |
5223 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5224 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5225 | /* NOTE: At this point we could also register our selves as the |
5226 | recipient of all input. Any characters typed could then be | |
23860348 | 5227 | passed on down to the target. */ |
6426a772 JM |
5228 | } |
5229 | ||
5230 | static void | |
75c99385 | 5231 | remote_terminal_ours (void) |
6426a772 | 5232 | { |
c6ebd6cf | 5233 | if (!target_async_permitted) |
75c99385 PA |
5234 | /* Nothing to do. */ |
5235 | return; | |
5236 | ||
5237 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5238 | if (remote_async_terminal_ours_p) |
5239 | return; | |
934b9bac | 5240 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5241 | add_file_handler (input_fd, stdin_event_handler, 0); |
5242 | remote_async_terminal_ours_p = 1; | |
5243 | } | |
5244 | ||
176a6961 | 5245 | static void |
917317f4 | 5246 | remote_console_output (char *msg) |
c906108c SS |
5247 | { |
5248 | char *p; | |
5249 | ||
c5aa993b | 5250 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5251 | { |
5252 | char tb[2]; | |
5253 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5254 | |
c906108c SS |
5255 | tb[0] = c; |
5256 | tb[1] = 0; | |
43ff13b4 | 5257 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5258 | } |
00db5b94 PA |
5259 | gdb_flush (gdb_stdtarg); |
5260 | } | |
74531fed PA |
5261 | |
5262 | typedef struct cached_reg | |
5263 | { | |
5264 | int num; | |
5265 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5266 | } cached_reg_t; | |
5267 | ||
5268 | DEF_VEC_O(cached_reg_t); | |
5269 | ||
722247f1 | 5270 | typedef struct stop_reply |
74531fed | 5271 | { |
722247f1 | 5272 | struct notif_event base; |
74531fed | 5273 | |
722247f1 | 5274 | /* The identifier of the thread about this event */ |
74531fed PA |
5275 | ptid_t ptid; |
5276 | ||
5277 | struct target_waitstatus ws; | |
5278 | ||
15148d6a PA |
5279 | /* Expedited registers. This makes remote debugging a bit more |
5280 | efficient for those targets that provide critical registers as | |
5281 | part of their normal status mechanism (as another roundtrip to | |
5282 | fetch them is avoided). */ | |
74531fed PA |
5283 | VEC(cached_reg_t) *regcache; |
5284 | ||
5285 | int stopped_by_watchpoint_p; | |
5286 | CORE_ADDR watch_data_address; | |
5287 | ||
dc146f7c | 5288 | int core; |
722247f1 | 5289 | } *stop_reply_p; |
a744cf53 | 5290 | |
722247f1 YQ |
5291 | DECLARE_QUEUE_P (stop_reply_p); |
5292 | DEFINE_QUEUE_P (stop_reply_p); | |
5293 | /* The list of already fetched and acknowledged stop events. This | |
5294 | queue is used for notification Stop, and other notifications | |
5295 | don't need queue for their events, because the notification events | |
5296 | of Stop can't be consumed immediately, so that events should be | |
5297 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5298 | time. Other notifications can consume their events immediately, | |
5299 | so queue is not needed for them. */ | |
5300 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5301 | |
5302 | static void | |
5303 | stop_reply_xfree (struct stop_reply *r) | |
5304 | { | |
f48ff2a7 | 5305 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5306 | } |
5307 | ||
722247f1 YQ |
5308 | static void |
5309 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5310 | struct notif_event *event) | |
5311 | { | |
5312 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5313 | } | |
5314 | ||
5315 | static void | |
5316 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5317 | struct notif_event *event) | |
5318 | { | |
5319 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5320 | ||
5321 | /* acknowledge */ | |
5322 | putpkt ((char *) self->ack_command); | |
5323 | ||
5324 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5325 | /* We got an unknown stop reply. */ | |
5326 | error (_("Unknown stop reply")); | |
5327 | ||
5328 | push_stop_reply (stop_reply); | |
5329 | } | |
5330 | ||
5331 | static int | |
5332 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5333 | { | |
5334 | /* We can't get pending events in remote_notif_process for | |
5335 | notification stop, and we have to do this in remote_wait_ns | |
5336 | instead. If we fetch all queued events from stub, remote stub | |
5337 | may exit and we have no chance to process them back in | |
5338 | remote_wait_ns. */ | |
5339 | mark_async_event_handler (remote_async_inferior_event_token); | |
5340 | return 0; | |
5341 | } | |
5342 | ||
5343 | static void | |
5344 | stop_reply_dtr (struct notif_event *event) | |
5345 | { | |
5346 | struct stop_reply *r = (struct stop_reply *) event; | |
5347 | ||
5348 | VEC_free (cached_reg_t, r->regcache); | |
5349 | } | |
5350 | ||
5351 | static struct notif_event * | |
5352 | remote_notif_stop_alloc_reply (void) | |
5353 | { | |
5354 | struct notif_event *r | |
5355 | = (struct notif_event *) XMALLOC (struct stop_reply); | |
5356 | ||
5357 | r->dtr = stop_reply_dtr; | |
5358 | ||
5359 | return r; | |
5360 | } | |
5361 | ||
5362 | /* A client of notification Stop. */ | |
5363 | ||
5364 | struct notif_client notif_client_stop = | |
5365 | { | |
5366 | "Stop", | |
5367 | "vStopped", | |
5368 | remote_notif_stop_parse, | |
5369 | remote_notif_stop_ack, | |
5370 | remote_notif_stop_can_get_pending_events, | |
5371 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5372 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5373 | }; |
5374 | ||
5375 | /* A parameter to pass data in and out. */ | |
5376 | ||
5377 | struct queue_iter_param | |
5378 | { | |
5379 | void *input; | |
5380 | struct stop_reply *output; | |
5381 | }; | |
5382 | ||
f48ff2a7 YQ |
5383 | /* Remove stop replies in the queue if its pid is equal to the given |
5384 | inferior's pid. */ | |
722247f1 YQ |
5385 | |
5386 | static int | |
f48ff2a7 YQ |
5387 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5388 | QUEUE_ITER (stop_reply_p) *iter, | |
5389 | stop_reply_p event, | |
5390 | void *data) | |
722247f1 YQ |
5391 | { |
5392 | struct queue_iter_param *param = data; | |
5393 | struct inferior *inf = param->input; | |
5394 | ||
f48ff2a7 | 5395 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5396 | { |
5397 | stop_reply_xfree (event); | |
5398 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5399 | } | |
5400 | ||
5401 | return 1; | |
5402 | } | |
5403 | ||
f48ff2a7 | 5404 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5405 | |
74531fed | 5406 | static void |
5f4cf0bb | 5407 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5408 | { |
722247f1 YQ |
5409 | int i; |
5410 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5411 | struct stop_reply *reply; |
5412 | struct remote_state *rs = get_remote_state (); | |
5413 | struct remote_notif_state *rns = rs->notif_state; | |
5414 | ||
5415 | /* This function can be notified when an inferior exists. When the | |
5416 | target is not remote, the notification state is NULL. */ | |
5417 | if (rs->remote_desc == NULL) | |
5418 | return; | |
5419 | ||
5420 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5421 | |
74531fed | 5422 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5423 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5424 | { |
722247f1 | 5425 | stop_reply_xfree (reply); |
f48ff2a7 | 5426 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5427 | } |
c906108c | 5428 | |
722247f1 YQ |
5429 | param.input = inf; |
5430 | param.output = NULL; | |
74531fed PA |
5431 | /* Discard the stop replies we have already pulled with |
5432 | vStopped. */ | |
722247f1 | 5433 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5434 | remove_stop_reply_for_inferior, ¶m); |
5435 | } | |
5436 | ||
5437 | /* Discard the stop replies in stop_reply_queue. */ | |
5438 | ||
5439 | static void | |
5440 | discard_pending_stop_replies_in_queue (void) | |
5441 | { | |
5442 | struct queue_iter_param param; | |
5443 | ||
5444 | param.input = NULL; | |
5445 | param.output = NULL; | |
5446 | /* Discard the stop replies we have already pulled with | |
5447 | vStopped. */ | |
5448 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5449 | remove_stop_reply_for_inferior, ¶m); | |
722247f1 | 5450 | } |
74531fed | 5451 | |
722247f1 YQ |
5452 | /* A parameter to pass data in and out. */ |
5453 | ||
5454 | static int | |
5455 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5456 | QUEUE_ITER (stop_reply_p) *iter, | |
5457 | stop_reply_p event, | |
5458 | void *data) | |
5459 | { | |
5460 | struct queue_iter_param *param = data; | |
5461 | ptid_t *ptid = param->input; | |
5462 | ||
5463 | if (ptid_match (event->ptid, *ptid)) | |
5464 | { | |
5465 | param->output = event; | |
5466 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5467 | return 0; | |
c8e38a49 | 5468 | } |
722247f1 YQ |
5469 | |
5470 | return 1; | |
74531fed | 5471 | } |
43ff13b4 | 5472 | |
722247f1 YQ |
5473 | /* Remove the first reply in 'stop_reply_queue' which matches |
5474 | PTID. */ | |
2e9f7625 | 5475 | |
722247f1 YQ |
5476 | static struct stop_reply * |
5477 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5478 | { |
722247f1 YQ |
5479 | struct queue_iter_param param; |
5480 | ||
5481 | param.input = &ptid; | |
5482 | param.output = NULL; | |
5483 | ||
5484 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5485 | remote_notif_remove_once_on_match, ¶m); | |
5486 | if (notif_debug) | |
5487 | fprintf_unfiltered (gdb_stdlog, | |
5488 | "notif: discard queued event: 'Stop' in %s\n", | |
5489 | target_pid_to_str (ptid)); | |
a744cf53 | 5490 | |
722247f1 | 5491 | return param.output; |
74531fed | 5492 | } |
75c99385 | 5493 | |
74531fed PA |
5494 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5495 | remove it from the queue, and return it. Returns NULL if none is | |
5496 | found. If there are still queued events left to process, tell the | |
5497 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5498 | |
74531fed PA |
5499 | static struct stop_reply * |
5500 | queued_stop_reply (ptid_t ptid) | |
5501 | { | |
722247f1 | 5502 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5503 | |
722247f1 | 5504 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5505 | /* There's still at least an event left. */ |
5506 | mark_async_event_handler (remote_async_inferior_event_token); | |
5507 | ||
722247f1 | 5508 | return r; |
74531fed PA |
5509 | } |
5510 | ||
5511 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5512 | know that we now have at least one queued event left to pass to the | |
5513 | core side, tell the event loop to get back to target_wait soon. */ | |
5514 | ||
5515 | static void | |
5516 | push_stop_reply (struct stop_reply *new_event) | |
5517 | { | |
722247f1 | 5518 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5519 | |
722247f1 YQ |
5520 | if (notif_debug) |
5521 | fprintf_unfiltered (gdb_stdlog, | |
5522 | "notif: push 'Stop' %s to queue %d\n", | |
5523 | target_pid_to_str (new_event->ptid), | |
5524 | QUEUE_length (stop_reply_p, | |
5525 | stop_reply_queue)); | |
74531fed PA |
5526 | |
5527 | mark_async_event_handler (remote_async_inferior_event_token); | |
5528 | } | |
5529 | ||
722247f1 YQ |
5530 | static int |
5531 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5532 | QUEUE_ITER (stop_reply_p) *iter, | |
5533 | struct stop_reply *event, | |
5534 | void *data) | |
5535 | { | |
5536 | ptid_t *ptid = data; | |
5537 | ||
5538 | return !(ptid_equal (*ptid, event->ptid) | |
5539 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5540 | } | |
5541 | ||
74531fed PA |
5542 | /* Returns true if we have a stop reply for PTID. */ |
5543 | ||
5544 | static int | |
5545 | peek_stop_reply (ptid_t ptid) | |
5546 | { | |
722247f1 YQ |
5547 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5548 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5549 | } |
5550 | ||
5551 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5552 | result is stored in EVENT, or throws an error. */ | |
5553 | ||
5554 | static void | |
5555 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5556 | { | |
5557 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5558 | ULONGEST addr; | |
5559 | char *p; | |
5560 | ||
5561 | event->ptid = null_ptid; | |
5562 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5563 | event->ws.value.integer = 0; | |
74531fed PA |
5564 | event->stopped_by_watchpoint_p = 0; |
5565 | event->regcache = NULL; | |
dc146f7c | 5566 | event->core = -1; |
74531fed PA |
5567 | |
5568 | switch (buf[0]) | |
5569 | { | |
5570 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5571 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5572 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5573 | ss = signal number | |
5574 | n... = register number | |
5575 | r... = register contents | |
5576 | */ | |
5577 | ||
5578 | p = &buf[3]; /* after Txx */ | |
5579 | while (*p) | |
5580 | { | |
5581 | char *p1; | |
5582 | char *p_temp; | |
5583 | int fieldsize; | |
5584 | LONGEST pnum = 0; | |
43ff13b4 | 5585 | |
cea39f65 MS |
5586 | /* If the packet contains a register number, save it in |
5587 | pnum and set p1 to point to the character following it. | |
5588 | Otherwise p1 points to p. */ | |
3c3bea1c | 5589 | |
cea39f65 MS |
5590 | /* If this packet is an awatch packet, don't parse the 'a' |
5591 | as a register number. */ | |
c8e38a49 | 5592 | |
dc146f7c VP |
5593 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5594 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5595 | { |
5596 | /* Read the ``P'' register number. */ | |
5597 | pnum = strtol (p, &p_temp, 16); | |
5598 | p1 = p_temp; | |
5599 | } | |
5600 | else | |
5601 | p1 = p; | |
802188a7 | 5602 | |
cea39f65 MS |
5603 | if (p1 == p) /* No register number present here. */ |
5604 | { | |
5605 | p1 = strchr (p, ':'); | |
5606 | if (p1 == NULL) | |
5607 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5608 | Packet: '%s'\n"), |
cea39f65 MS |
5609 | p, buf); |
5610 | if (strncmp (p, "thread", p1 - p) == 0) | |
5611 | event->ptid = read_ptid (++p1, &p); | |
5612 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5613 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5614 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5615 | { | |
5616 | event->stopped_by_watchpoint_p = 1; | |
5617 | p = unpack_varlen_hex (++p1, &addr); | |
5618 | event->watch_data_address = (CORE_ADDR) addr; | |
5619 | } | |
5620 | else if (strncmp (p, "library", p1 - p) == 0) | |
5621 | { | |
5622 | p1++; | |
5623 | p_temp = p1; | |
5624 | while (*p_temp && *p_temp != ';') | |
5625 | p_temp++; | |
c8e38a49 | 5626 | |
5b5596ff | 5627 | event->ws.kind = TARGET_WAITKIND_LOADED; |
cea39f65 MS |
5628 | p = p_temp; |
5629 | } | |
5630 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5631 | { | |
5b5596ff PA |
5632 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; |
5633 | /* p1 will indicate "begin" or "end", but it makes | |
5634 | no difference for now, so ignore it. */ | |
cea39f65 MS |
5635 | p_temp = strchr (p1 + 1, ';'); |
5636 | if (p_temp) | |
c8e38a49 | 5637 | p = p_temp; |
cea39f65 | 5638 | } |
dc146f7c VP |
5639 | else if (strncmp (p, "core", p1 - p) == 0) |
5640 | { | |
5641 | ULONGEST c; | |
a744cf53 | 5642 | |
dc146f7c VP |
5643 | p = unpack_varlen_hex (++p1, &c); |
5644 | event->core = c; | |
5645 | } | |
cea39f65 MS |
5646 | else |
5647 | { | |
5648 | /* Silently skip unknown optional info. */ | |
5649 | p_temp = strchr (p1 + 1, ';'); | |
5650 | if (p_temp) | |
5651 | p = p_temp; | |
5652 | } | |
5653 | } | |
5654 | else | |
5655 | { | |
5656 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5657 | cached_reg_t cached_reg; | |
74531fed | 5658 | |
cea39f65 | 5659 | p = p1; |
75c99385 | 5660 | |
cea39f65 MS |
5661 | if (*p != ':') |
5662 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5663 | Packet: '%s'\n"), |
cea39f65 MS |
5664 | p, buf); |
5665 | ++p; | |
43ff13b4 | 5666 | |
cea39f65 MS |
5667 | if (reg == NULL) |
5668 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5669 | Packet: '%s'\n"), |
7c47795c | 5670 | hex_string (pnum), p, buf); |
c8e38a49 | 5671 | |
cea39f65 | 5672 | cached_reg.num = reg->regnum; |
4100683b | 5673 | |
cea39f65 | 5674 | fieldsize = hex2bin (p, cached_reg.data, |
f5656ead | 5675 | register_size (target_gdbarch (), |
cea39f65 MS |
5676 | reg->regnum)); |
5677 | p += 2 * fieldsize; | |
f5656ead | 5678 | if (fieldsize < register_size (target_gdbarch (), |
cea39f65 MS |
5679 | reg->regnum)) |
5680 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5681 | |
cea39f65 MS |
5682 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5683 | } | |
c8e38a49 | 5684 | |
cea39f65 MS |
5685 | if (*p != ';') |
5686 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5687 | buf, p); | |
5688 | ++p; | |
5689 | } | |
5b5596ff PA |
5690 | |
5691 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
5692 | break; | |
5693 | ||
c8e38a49 PA |
5694 | /* fall through */ |
5695 | case 'S': /* Old style status, just signal only. */ | |
5b5596ff PA |
5696 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
5697 | event->ws.value.sig = (enum gdb_signal) | |
5698 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
c8e38a49 PA |
5699 | break; |
5700 | case 'W': /* Target exited. */ | |
5701 | case 'X': | |
5702 | { | |
5703 | char *p; | |
5704 | int pid; | |
5705 | ULONGEST value; | |
82f73884 | 5706 | |
c8e38a49 PA |
5707 | /* GDB used to accept only 2 hex chars here. Stubs should |
5708 | only send more if they detect GDB supports multi-process | |
5709 | support. */ | |
5710 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5711 | |
c8e38a49 PA |
5712 | if (buf[0] == 'W') |
5713 | { | |
5714 | /* The remote process exited. */ | |
74531fed PA |
5715 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5716 | event->ws.value.integer = value; | |
c8e38a49 PA |
5717 | } |
5718 | else | |
5719 | { | |
5720 | /* The remote process exited with a signal. */ | |
74531fed | 5721 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
2ea28649 | 5722 | event->ws.value.sig = (enum gdb_signal) value; |
c8e38a49 | 5723 | } |
82f73884 | 5724 | |
c8e38a49 PA |
5725 | /* If no process is specified, assume inferior_ptid. */ |
5726 | pid = ptid_get_pid (inferior_ptid); | |
5727 | if (*p == '\0') | |
5728 | ; | |
5729 | else if (*p == ';') | |
5730 | { | |
5731 | p++; | |
5732 | ||
5733 | if (p == '\0') | |
82f73884 | 5734 | ; |
c8e38a49 PA |
5735 | else if (strncmp (p, |
5736 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5737 | { |
c8e38a49 | 5738 | ULONGEST upid; |
a744cf53 | 5739 | |
c8e38a49 PA |
5740 | p += sizeof ("process:") - 1; |
5741 | unpack_varlen_hex (p, &upid); | |
5742 | pid = upid; | |
82f73884 PA |
5743 | } |
5744 | else | |
5745 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5746 | } |
c8e38a49 PA |
5747 | else |
5748 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5749 | event->ptid = pid_to_ptid (pid); |
5750 | } | |
5751 | break; | |
5752 | } | |
5753 | ||
5754 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5755 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5756 | } | |
5757 | ||
722247f1 YQ |
5758 | /* When the stub wants to tell GDB about a new notification reply, it |
5759 | sends a notification (%Stop, for example). Those can come it at | |
5760 | any time, hence, we have to make sure that any pending | |
5761 | putpkt/getpkt sequence we're making is finished, before querying | |
5762 | the stub for more events with the corresponding ack command | |
5763 | (vStopped, for example). E.g., if we started a vStopped sequence | |
5764 | immediately upon receiving the notification, something like this | |
5765 | could happen: | |
74531fed PA |
5766 | |
5767 | 1.1) --> Hg 1 | |
5768 | 1.2) <-- OK | |
5769 | 1.3) --> g | |
5770 | 1.4) <-- %Stop | |
5771 | 1.5) --> vStopped | |
5772 | 1.6) <-- (registers reply to step #1.3) | |
5773 | ||
5774 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5775 | query. | |
5776 | ||
796cb314 | 5777 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
5778 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
5779 | doing whatever we were doing: | |
5780 | ||
5781 | 2.1) --> Hg 1 | |
5782 | 2.2) <-- OK | |
5783 | 2.3) --> g | |
5784 | 2.4) <-- %Stop | |
5785 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5786 | 2.5) <-- (registers reply to step #2.3) | |
5787 | ||
5788 | Eventualy after step #2.5, we return to the event loop, which | |
5789 | notices there's an event on the | |
5790 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5791 | associated callback --- the function below. At this point, we're | |
5792 | always safe to start a vStopped sequence. : | |
5793 | ||
5794 | 2.6) --> vStopped | |
5795 | 2.7) <-- T05 thread:2 | |
5796 | 2.8) --> vStopped | |
5797 | 2.9) --> OK | |
5798 | */ | |
5799 | ||
722247f1 YQ |
5800 | void |
5801 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
5802 | { |
5803 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5804 | |
f48ff2a7 | 5805 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 5806 | { |
722247f1 YQ |
5807 | if (notif_debug) |
5808 | fprintf_unfiltered (gdb_stdlog, | |
5809 | "notif: process: '%s' ack pending event\n", | |
5810 | nc->name); | |
74531fed | 5811 | |
722247f1 | 5812 | /* acknowledge */ |
f48ff2a7 YQ |
5813 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
5814 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
5815 | |
5816 | while (1) | |
5817 | { | |
5818 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5819 | if (strcmp (rs->buf, "OK") == 0) | |
5820 | break; | |
5821 | else | |
722247f1 | 5822 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
5823 | } |
5824 | } | |
722247f1 YQ |
5825 | else |
5826 | { | |
5827 | if (notif_debug) | |
5828 | fprintf_unfiltered (gdb_stdlog, | |
5829 | "notif: process: '%s' no pending reply\n", | |
5830 | nc->name); | |
5831 | } | |
74531fed PA |
5832 | } |
5833 | ||
74531fed PA |
5834 | /* Called when it is decided that STOP_REPLY holds the info of the |
5835 | event that is to be returned to the core. This function always | |
5836 | destroys STOP_REPLY. */ | |
5837 | ||
5838 | static ptid_t | |
5839 | process_stop_reply (struct stop_reply *stop_reply, | |
5840 | struct target_waitstatus *status) | |
5841 | { | |
5842 | ptid_t ptid; | |
5843 | ||
5844 | *status = stop_reply->ws; | |
5845 | ptid = stop_reply->ptid; | |
5846 | ||
5847 | /* If no thread/process was reported by the stub, assume the current | |
5848 | inferior. */ | |
5849 | if (ptid_equal (ptid, null_ptid)) | |
5850 | ptid = inferior_ptid; | |
5851 | ||
5f3563ea PA |
5852 | if (status->kind != TARGET_WAITKIND_EXITED |
5853 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5854 | { |
ee154bee TT |
5855 | struct remote_state *rs = get_remote_state (); |
5856 | ||
5f3563ea PA |
5857 | /* Expedited registers. */ |
5858 | if (stop_reply->regcache) | |
5859 | { | |
217f1f79 | 5860 | struct regcache *regcache |
f5656ead | 5861 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
5862 | cached_reg_t *reg; |
5863 | int ix; | |
5864 | ||
5865 | for (ix = 0; | |
5866 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5867 | ix++) | |
217f1f79 | 5868 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5869 | VEC_free (cached_reg_t, stop_reply->regcache); |
5870 | } | |
74531fed | 5871 | |
ee154bee TT |
5872 | rs->remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5873 | rs->remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5874 | |
5875 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5876 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5877 | } |
5878 | ||
74531fed PA |
5879 | stop_reply_xfree (stop_reply); |
5880 | return ptid; | |
5881 | } | |
5882 | ||
5883 | /* The non-stop mode version of target_wait. */ | |
5884 | ||
5885 | static ptid_t | |
47608cb1 | 5886 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5887 | { |
5888 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5889 | struct stop_reply *stop_reply; |
5890 | int ret; | |
fee9eda9 | 5891 | int is_notif = 0; |
74531fed PA |
5892 | |
5893 | /* If in non-stop mode, get out of getpkt even if a | |
5894 | notification is received. */ | |
5895 | ||
5896 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 5897 | 0 /* forever */, &is_notif); |
74531fed PA |
5898 | while (1) |
5899 | { | |
fee9eda9 | 5900 | if (ret != -1 && !is_notif) |
74531fed PA |
5901 | switch (rs->buf[0]) |
5902 | { | |
5903 | case 'E': /* Error of some sort. */ | |
5904 | /* We're out of sync with the target now. Did it continue | |
5905 | or not? We can't tell which thread it was in non-stop, | |
5906 | so just ignore this. */ | |
5907 | warning (_("Remote failure reply: %s"), rs->buf); | |
5908 | break; | |
5909 | case 'O': /* Console output. */ | |
5910 | remote_console_output (rs->buf + 1); | |
5911 | break; | |
5912 | default: | |
5913 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5914 | break; | |
5915 | } | |
5916 | ||
5917 | /* Acknowledge a pending stop reply that may have arrived in the | |
5918 | mean time. */ | |
f48ff2a7 | 5919 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 5920 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
5921 | |
5922 | /* If indeed we noticed a stop reply, we're done. */ | |
5923 | stop_reply = queued_stop_reply (ptid); | |
5924 | if (stop_reply != NULL) | |
5925 | return process_stop_reply (stop_reply, status); | |
5926 | ||
47608cb1 | 5927 | /* Still no event. If we're just polling for an event, then |
74531fed | 5928 | return to the event loop. */ |
47608cb1 | 5929 | if (options & TARGET_WNOHANG) |
74531fed PA |
5930 | { |
5931 | status->kind = TARGET_WAITKIND_IGNORE; | |
5932 | return minus_one_ptid; | |
5933 | } | |
5934 | ||
47608cb1 | 5935 | /* Otherwise do a blocking wait. */ |
74531fed | 5936 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 5937 | 1 /* forever */, &is_notif); |
74531fed PA |
5938 | } |
5939 | } | |
5940 | ||
5941 | /* Wait until the remote machine stops, then return, storing status in | |
5942 | STATUS just as `wait' would. */ | |
5943 | ||
5944 | static ptid_t | |
47608cb1 | 5945 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5946 | { |
5947 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5948 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5949 | char *buf; |
74531fed PA |
5950 | struct stop_reply *stop_reply; |
5951 | ||
47608cb1 PA |
5952 | again: |
5953 | ||
74531fed PA |
5954 | status->kind = TARGET_WAITKIND_IGNORE; |
5955 | status->value.integer = 0; | |
5956 | ||
5957 | stop_reply = queued_stop_reply (ptid); | |
5958 | if (stop_reply != NULL) | |
5959 | return process_stop_reply (stop_reply, status); | |
5960 | ||
5961 | if (rs->cached_wait_status) | |
5962 | /* Use the cached wait status, but only once. */ | |
5963 | rs->cached_wait_status = 0; | |
5964 | else | |
5965 | { | |
5966 | int ret; | |
722247f1 | 5967 | int is_notif; |
74531fed PA |
5968 | |
5969 | if (!target_is_async_p ()) | |
5970 | { | |
934b9bac | 5971 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
5972 | /* If the user hit C-c before this packet, or between packets, |
5973 | pretend that it was hit right here. */ | |
522002f9 | 5974 | if (check_quit_flag ()) |
74531fed | 5975 | { |
522002f9 | 5976 | clear_quit_flag (); |
934b9bac | 5977 | sync_remote_interrupt (SIGINT); |
74531fed PA |
5978 | } |
5979 | } | |
5980 | ||
5981 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5982 | _never_ wait for ever -> test on target_is_async_p(). | |
5983 | However, before we do that we need to ensure that the caller | |
5984 | knows how to take the target into/out of async mode. */ | |
722247f1 YQ |
5985 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5986 | wait_forever_enabled_p, &is_notif); | |
5987 | ||
5e1b953b SDJ |
5988 | if (!target_is_async_p ()) |
5989 | signal (SIGINT, ofunc); | |
5990 | ||
722247f1 YQ |
5991 | /* GDB gets a notification. Return to core as this event is |
5992 | not interesting. */ | |
5993 | if (ret != -1 && is_notif) | |
5994 | return minus_one_ptid; | |
74531fed PA |
5995 | } |
5996 | ||
5997 | buf = rs->buf; | |
5998 | ||
ee154bee | 5999 | rs->remote_stopped_by_watchpoint_p = 0; |
74531fed PA |
6000 | |
6001 | /* We got something. */ | |
6002 | rs->waiting_for_stop_reply = 0; | |
6003 | ||
3a29589a DJ |
6004 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6005 | an 'F' or 'O' packet. */ | |
6006 | if (buf[0] != 'F' && buf[0] != 'O') | |
6007 | rs->ctrlc_pending_p = 0; | |
6008 | ||
74531fed PA |
6009 | switch (buf[0]) |
6010 | { | |
6011 | case 'E': /* Error of some sort. */ | |
6012 | /* We're out of sync with the target now. Did it continue or | |
6013 | not? Not is more likely, so report a stop. */ | |
6014 | warning (_("Remote failure reply: %s"), buf); | |
6015 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6016 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6017 | break; |
6018 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6019 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6020 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6021 | break; |
6022 | case 'T': case 'S': case 'X': case 'W': | |
6023 | { | |
722247f1 YQ |
6024 | struct stop_reply *stop_reply |
6025 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6026 | rs->buf); | |
74531fed | 6027 | |
74531fed | 6028 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6029 | break; |
6030 | } | |
6031 | case 'O': /* Console output. */ | |
6032 | remote_console_output (buf + 1); | |
e24a49d8 | 6033 | |
c8e38a49 PA |
6034 | /* The target didn't really stop; keep waiting. */ |
6035 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6036 | |
c8e38a49 PA |
6037 | break; |
6038 | case '\0': | |
b73be471 | 6039 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6040 | { |
6041 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6042 | remote system doesn't support it. */ | |
6043 | target_terminal_ours_for_output (); | |
6044 | printf_filtered | |
6045 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6046 | gdb_signal_to_name (rs->last_sent_signal)); |
6047 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6048 | target_terminal_inferior (); |
6049 | ||
280ceea3 | 6050 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6051 | putpkt ((char *) buf); |
6052 | ||
6053 | /* We just told the target to resume, so a stop reply is in | |
6054 | order. */ | |
e24a49d8 | 6055 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6056 | break; |
43ff13b4 | 6057 | } |
c8e38a49 PA |
6058 | /* else fallthrough */ |
6059 | default: | |
6060 | warning (_("Invalid remote reply: %s"), buf); | |
6061 | /* Keep waiting. */ | |
6062 | rs->waiting_for_stop_reply = 1; | |
6063 | break; | |
43ff13b4 | 6064 | } |
c8e38a49 | 6065 | |
c8e38a49 | 6066 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6067 | { |
6068 | /* Nothing interesting happened. If we're doing a non-blocking | |
6069 | poll, we're done. Otherwise, go back to waiting. */ | |
6070 | if (options & TARGET_WNOHANG) | |
6071 | return minus_one_ptid; | |
6072 | else | |
6073 | goto again; | |
6074 | } | |
74531fed PA |
6075 | else if (status->kind != TARGET_WAITKIND_EXITED |
6076 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6077 | { |
6078 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6079 | record_currthread (rs, event_ptid); |
82f73884 PA |
6080 | else |
6081 | event_ptid = inferior_ptid; | |
43ff13b4 | 6082 | } |
74531fed PA |
6083 | else |
6084 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6085 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6086 | |
82f73884 | 6087 | return event_ptid; |
43ff13b4 JM |
6088 | } |
6089 | ||
74531fed PA |
6090 | /* Wait until the remote machine stops, then return, storing status in |
6091 | STATUS just as `wait' would. */ | |
6092 | ||
c8e38a49 | 6093 | static ptid_t |
117de6a9 | 6094 | remote_wait (struct target_ops *ops, |
47608cb1 | 6095 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6096 | { |
6097 | ptid_t event_ptid; | |
6098 | ||
74531fed | 6099 | if (non_stop) |
47608cb1 | 6100 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6101 | else |
47608cb1 | 6102 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6103 | |
74531fed | 6104 | if (target_can_async_p ()) |
c8e38a49 | 6105 | { |
74531fed PA |
6106 | /* If there are are events left in the queue tell the event loop |
6107 | to return here. */ | |
722247f1 | 6108 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6109 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6110 | } |
c8e38a49 PA |
6111 | |
6112 | return event_ptid; | |
6113 | } | |
6114 | ||
74ca34ce | 6115 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6116 | |
b96ec7ac | 6117 | static int |
56be3814 | 6118 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6119 | { |
6120 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6121 | char *buf, *p; |
b96ec7ac AC |
6122 | char regp[MAX_REGISTER_SIZE]; |
6123 | int i; | |
6124 | ||
74ca34ce DJ |
6125 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
6126 | return 0; | |
6127 | ||
6128 | if (reg->pnum == -1) | |
6129 | return 0; | |
6130 | ||
2e9f7625 | 6131 | p = rs->buf; |
fcad0fa4 | 6132 | *p++ = 'p'; |
74ca34ce | 6133 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6134 | *p++ = '\0'; |
1f4437a4 MS |
6135 | putpkt (rs->buf); |
6136 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6137 | |
2e9f7625 DJ |
6138 | buf = rs->buf; |
6139 | ||
74ca34ce DJ |
6140 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6141 | { | |
6142 | case PACKET_OK: | |
6143 | break; | |
6144 | case PACKET_UNKNOWN: | |
6145 | return 0; | |
6146 | case PACKET_ERROR: | |
27a9c0bf MS |
6147 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6148 | gdbarch_register_name (get_regcache_arch (regcache), | |
6149 | reg->regnum), | |
6150 | buf); | |
74ca34ce | 6151 | } |
3f9a994c JB |
6152 | |
6153 | /* If this register is unfetchable, tell the regcache. */ | |
6154 | if (buf[0] == 'x') | |
8480adf2 | 6155 | { |
56be3814 | 6156 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6157 | return 1; |
b96ec7ac | 6158 | } |
b96ec7ac | 6159 | |
3f9a994c JB |
6160 | /* Otherwise, parse and supply the value. */ |
6161 | p = buf; | |
6162 | i = 0; | |
6163 | while (p[0] != 0) | |
6164 | { | |
6165 | if (p[1] == 0) | |
74ca34ce | 6166 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6167 | |
6168 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6169 | p += 2; | |
6170 | } | |
56be3814 | 6171 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6172 | return 1; |
b96ec7ac AC |
6173 | } |
6174 | ||
74ca34ce DJ |
6175 | /* Fetch the registers included in the target's 'g' packet. */ |
6176 | ||
29709017 DJ |
6177 | static int |
6178 | send_g_packet (void) | |
c906108c | 6179 | { |
d01949b6 | 6180 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6181 | int buf_len; |
c906108c | 6182 | |
bba74b36 | 6183 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6184 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6185 | |
29709017 DJ |
6186 | /* We can get out of synch in various cases. If the first character |
6187 | in the buffer is not a hex character, assume that has happened | |
6188 | and try to fetch another packet to read. */ | |
6189 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6190 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6191 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6192 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6193 | { | |
6194 | if (remote_debug) | |
6195 | fprintf_unfiltered (gdb_stdlog, | |
6196 | "Bad register packet; fetching a new packet\n"); | |
6197 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6198 | } | |
6199 | ||
74ca34ce DJ |
6200 | buf_len = strlen (rs->buf); |
6201 | ||
6202 | /* Sanity check the received packet. */ | |
6203 | if (buf_len % 2 != 0) | |
6204 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6205 | |
6206 | return buf_len / 2; | |
6207 | } | |
6208 | ||
6209 | static void | |
56be3814 | 6210 | process_g_packet (struct regcache *regcache) |
29709017 | 6211 | { |
4a22f64d | 6212 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6213 | struct remote_state *rs = get_remote_state (); |
6214 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6215 | int i, buf_len; | |
6216 | char *p; | |
6217 | char *regs; | |
6218 | ||
6219 | buf_len = strlen (rs->buf); | |
6220 | ||
6221 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6222 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6223 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6224 | ||
6225 | /* Save the size of the packet sent to us by the target. It is used | |
6226 | as a heuristic when determining the max size of packets that the | |
6227 | target can safely receive. */ | |
6228 | if (rsa->actual_register_packet_size == 0) | |
6229 | rsa->actual_register_packet_size = buf_len; | |
6230 | ||
6231 | /* If this is smaller than we guessed the 'g' packet would be, | |
6232 | update our records. A 'g' reply that doesn't include a register's | |
6233 | value implies either that the register is not available, or that | |
6234 | the 'p' packet must be used. */ | |
6235 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6236 | { |
74ca34ce DJ |
6237 | rsa->sizeof_g_packet = buf_len / 2; |
6238 | ||
4a22f64d | 6239 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6240 | { |
74ca34ce DJ |
6241 | if (rsa->regs[i].pnum == -1) |
6242 | continue; | |
6243 | ||
6244 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6245 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6246 | else |
74ca34ce | 6247 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6248 | } |
74ca34ce | 6249 | } |
b323314b | 6250 | |
74ca34ce | 6251 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6252 | |
6253 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6254 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6255 | |
c906108c SS |
6256 | /* Reply describes registers byte by byte, each byte encoded as two |
6257 | hex characters. Suck them all up, then supply them to the | |
6258 | register cacheing/storage mechanism. */ | |
6259 | ||
74ca34ce | 6260 | p = rs->buf; |
ea9c271d | 6261 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6262 | { |
74ca34ce DJ |
6263 | if (p[0] == 0 || p[1] == 0) |
6264 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6265 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6266 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6267 | |
c906108c | 6268 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6269 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6270 | else |
6271 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6272 | p += 2; | |
6273 | } | |
6274 | ||
a744cf53 MS |
6275 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6276 | { | |
6277 | struct packet_reg *r = &rsa->regs[i]; | |
6278 | ||
6279 | if (r->in_g_packet) | |
6280 | { | |
6281 | if (r->offset * 2 >= strlen (rs->buf)) | |
6282 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6283 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6284 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6285 | else if (rs->buf[r->offset * 2] == 'x') |
6286 | { | |
6287 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6288 | /* The register isn't available, mark it as such (at | |
6289 | the same time setting the value to zero). */ | |
6290 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6291 | } | |
6292 | else | |
6293 | regcache_raw_supply (regcache, r->regnum, | |
6294 | regs + r->offset); | |
6295 | } | |
6296 | } | |
c906108c SS |
6297 | } |
6298 | ||
29709017 | 6299 | static void |
56be3814 | 6300 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6301 | { |
6302 | send_g_packet (); | |
56be3814 | 6303 | process_g_packet (regcache); |
29709017 DJ |
6304 | } |
6305 | ||
e6e4e701 PA |
6306 | /* Make the remote selected traceframe match GDB's selected |
6307 | traceframe. */ | |
6308 | ||
6309 | static void | |
6310 | set_remote_traceframe (void) | |
6311 | { | |
6312 | int newnum; | |
262e1174 | 6313 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6314 | |
262e1174 | 6315 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6316 | return; |
6317 | ||
6318 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6319 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6320 | |
6321 | newnum = target_trace_find (tfind_number, | |
6322 | get_traceframe_number (), 0, 0, NULL); | |
6323 | ||
6324 | /* Should not happen. If it does, all bets are off. */ | |
6325 | if (newnum != get_traceframe_number ()) | |
6326 | warning (_("could not set remote traceframe")); | |
6327 | } | |
6328 | ||
74ca34ce | 6329 | static void |
28439f5e PA |
6330 | remote_fetch_registers (struct target_ops *ops, |
6331 | struct regcache *regcache, int regnum) | |
74ca34ce | 6332 | { |
74ca34ce DJ |
6333 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6334 | int i; | |
6335 | ||
e6e4e701 | 6336 | set_remote_traceframe (); |
79d7f229 | 6337 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6338 | |
6339 | if (regnum >= 0) | |
6340 | { | |
6341 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6342 | |
74ca34ce DJ |
6343 | gdb_assert (reg != NULL); |
6344 | ||
6345 | /* If this register might be in the 'g' packet, try that first - | |
6346 | we are likely to read more than one register. If this is the | |
6347 | first 'g' packet, we might be overly optimistic about its | |
6348 | contents, so fall back to 'p'. */ | |
6349 | if (reg->in_g_packet) | |
6350 | { | |
56be3814 | 6351 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6352 | if (reg->in_g_packet) |
6353 | return; | |
6354 | } | |
6355 | ||
56be3814 | 6356 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6357 | return; |
6358 | ||
6359 | /* This register is not available. */ | |
56be3814 | 6360 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6361 | |
6362 | return; | |
6363 | } | |
6364 | ||
56be3814 | 6365 | fetch_registers_using_g (regcache); |
74ca34ce | 6366 | |
4a22f64d | 6367 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6368 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6369 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6370 | { |
6371 | /* This register is not available. */ | |
56be3814 | 6372 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6373 | } |
6374 | } | |
6375 | ||
c906108c SS |
6376 | /* Prepare to store registers. Since we may send them all (using a |
6377 | 'G' request), we have to read out the ones we don't want to change | |
6378 | first. */ | |
6379 | ||
c5aa993b | 6380 | static void |
316f2060 | 6381 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 6382 | { |
ea9c271d | 6383 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6384 | int i; |
cfd77fa1 | 6385 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6386 | |
c906108c | 6387 | /* Make sure the entire registers array is valid. */ |
444abaca | 6388 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
6389 | { |
6390 | case PACKET_DISABLE: | |
6391 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6392 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6393 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6394 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6395 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6396 | break; |
6397 | case PACKET_ENABLE: | |
6398 | break; | |
6399 | } | |
6400 | } | |
6401 | ||
ad10f812 | 6402 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6403 | packet was not recognized. */ |
5a2468f5 JM |
6404 | |
6405 | static int | |
1f4437a4 MS |
6406 | store_register_using_P (const struct regcache *regcache, |
6407 | struct packet_reg *reg) | |
5a2468f5 | 6408 | { |
4a22f64d | 6409 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6410 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6411 | /* Try storing a single register. */ |
6d820c5c | 6412 | char *buf = rs->buf; |
cfd77fa1 | 6413 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6414 | char *p; |
5a2468f5 | 6415 | |
74ca34ce DJ |
6416 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6417 | return 0; | |
6418 | ||
6419 | if (reg->pnum == -1) | |
6420 | return 0; | |
6421 | ||
ea9c271d | 6422 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6423 | p = buf + strlen (buf); |
56be3814 | 6424 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6425 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6426 | putpkt (rs->buf); |
6427 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6428 | |
74ca34ce DJ |
6429 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6430 | { | |
6431 | case PACKET_OK: | |
6432 | return 1; | |
6433 | case PACKET_ERROR: | |
27a9c0bf MS |
6434 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6435 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6436 | case PACKET_UNKNOWN: |
6437 | return 0; | |
6438 | default: | |
6439 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6440 | } | |
c906108c SS |
6441 | } |
6442 | ||
23860348 MS |
6443 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6444 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6445 | |
6446 | static void | |
56be3814 | 6447 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6448 | { |
d01949b6 | 6449 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6450 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6451 | gdb_byte *regs; |
c906108c SS |
6452 | char *p; |
6453 | ||
193cb69f AC |
6454 | /* Extract all the registers in the regcache copying them into a |
6455 | local buffer. */ | |
6456 | { | |
b323314b | 6457 | int i; |
a744cf53 | 6458 | |
ea9c271d DJ |
6459 | regs = alloca (rsa->sizeof_g_packet); |
6460 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6461 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6462 | { |
ea9c271d | 6463 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6464 | |
b323314b | 6465 | if (r->in_g_packet) |
56be3814 | 6466 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6467 | } |
6468 | } | |
c906108c SS |
6469 | |
6470 | /* Command describes registers byte by byte, | |
6471 | each byte encoded as two hex characters. */ | |
6d820c5c | 6472 | p = rs->buf; |
193cb69f | 6473 | *p++ = 'G'; |
74ca34ce DJ |
6474 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6475 | updated. */ | |
6476 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6477 | putpkt (rs->buf); |
6478 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6479 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6480 | error (_("Could not write registers; remote failure reply '%s'"), |
6481 | rs->buf); | |
c906108c | 6482 | } |
74ca34ce DJ |
6483 | |
6484 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6485 | of the register cache buffer. FIXME: ignores errors. */ | |
6486 | ||
6487 | static void | |
28439f5e PA |
6488 | remote_store_registers (struct target_ops *ops, |
6489 | struct regcache *regcache, int regnum) | |
74ca34ce | 6490 | { |
74ca34ce DJ |
6491 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6492 | int i; | |
6493 | ||
e6e4e701 | 6494 | set_remote_traceframe (); |
79d7f229 | 6495 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6496 | |
6497 | if (regnum >= 0) | |
6498 | { | |
6499 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6500 | |
74ca34ce DJ |
6501 | gdb_assert (reg != NULL); |
6502 | ||
6503 | /* Always prefer to store registers using the 'P' packet if | |
6504 | possible; we often change only a small number of registers. | |
6505 | Sometimes we change a larger number; we'd need help from a | |
6506 | higher layer to know to use 'G'. */ | |
56be3814 | 6507 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6508 | return; |
6509 | ||
6510 | /* For now, don't complain if we have no way to write the | |
6511 | register. GDB loses track of unavailable registers too | |
6512 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6513 | any way to read the register, either... */ |
74ca34ce DJ |
6514 | if (!reg->in_g_packet) |
6515 | return; | |
6516 | ||
56be3814 | 6517 | store_registers_using_G (regcache); |
74ca34ce DJ |
6518 | return; |
6519 | } | |
6520 | ||
56be3814 | 6521 | store_registers_using_G (regcache); |
74ca34ce | 6522 | |
4a22f64d | 6523 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6524 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6525 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6526 | /* See above for why we do not issue an error here. */ |
6527 | continue; | |
6528 | } | |
c906108c SS |
6529 | \f |
6530 | ||
6531 | /* Return the number of hex digits in num. */ | |
6532 | ||
6533 | static int | |
fba45db2 | 6534 | hexnumlen (ULONGEST num) |
c906108c SS |
6535 | { |
6536 | int i; | |
6537 | ||
6538 | for (i = 0; num != 0; i++) | |
6539 | num >>= 4; | |
6540 | ||
6541 | return max (i, 1); | |
6542 | } | |
6543 | ||
2df3850c | 6544 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6545 | |
6546 | static int | |
fba45db2 | 6547 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6548 | { |
c906108c | 6549 | int len = hexnumlen (num); |
a744cf53 | 6550 | |
2df3850c JM |
6551 | return hexnumnstr (buf, num, len); |
6552 | } | |
6553 | ||
c906108c | 6554 | |
2df3850c | 6555 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6556 | |
2df3850c | 6557 | static int |
fba45db2 | 6558 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6559 | { |
6560 | int i; | |
6561 | ||
6562 | buf[width] = '\0'; | |
6563 | ||
6564 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6565 | { |
c5aa993b | 6566 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6567 | num >>= 4; |
6568 | } | |
6569 | ||
2df3850c | 6570 | return width; |
c906108c SS |
6571 | } |
6572 | ||
23860348 | 6573 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6574 | |
6575 | static CORE_ADDR | |
fba45db2 | 6576 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6577 | { |
883b9c6c | 6578 | unsigned int address_size = remote_address_size; |
a744cf53 | 6579 | |
911c95a5 UW |
6580 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6581 | if (!address_size) | |
f5656ead | 6582 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6583 | |
6584 | if (address_size > 0 | |
6585 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6586 | { |
6587 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6588 | in a ULONGEST variable. */ |
c906108c | 6589 | ULONGEST mask = 1; |
a744cf53 | 6590 | |
911c95a5 | 6591 | mask = (mask << address_size) - 1; |
c906108c SS |
6592 | addr &= mask; |
6593 | } | |
6594 | return addr; | |
6595 | } | |
6596 | ||
a31ea83d DJ |
6597 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6598 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6599 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6600 | (which may be more than *OUT_LEN due to escape characters). The | |
6601 | total number of bytes in the output buffer will be at most | |
6602 | OUT_MAXLEN. */ | |
6603 | ||
6604 | static int | |
6605 | remote_escape_output (const gdb_byte *buffer, int len, | |
6606 | gdb_byte *out_buf, int *out_len, | |
6607 | int out_maxlen) | |
6608 | { | |
6609 | int input_index, output_index; | |
6610 | ||
6611 | output_index = 0; | |
6612 | for (input_index = 0; input_index < len; input_index++) | |
6613 | { | |
6614 | gdb_byte b = buffer[input_index]; | |
6615 | ||
6616 | if (b == '$' || b == '#' || b == '}') | |
6617 | { | |
6618 | /* These must be escaped. */ | |
6619 | if (output_index + 2 > out_maxlen) | |
6620 | break; | |
6621 | out_buf[output_index++] = '}'; | |
6622 | out_buf[output_index++] = b ^ 0x20; | |
6623 | } | |
6624 | else | |
6625 | { | |
6626 | if (output_index + 1 > out_maxlen) | |
6627 | break; | |
6628 | out_buf[output_index++] = b; | |
6629 | } | |
6630 | } | |
6631 | ||
6632 | *out_len = input_index; | |
6633 | return output_index; | |
6634 | } | |
6635 | ||
0876f84a DJ |
6636 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6637 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6638 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6639 | ||
6640 | This function reverses remote_escape_output. It allows more | |
6641 | escaped characters than that function does, in particular because | |
6642 | '*' must be escaped to avoid the run-length encoding processing | |
6643 | in reading packets. */ | |
6644 | ||
6645 | static int | |
6646 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6647 | gdb_byte *out_buf, int out_maxlen) | |
6648 | { | |
6649 | int input_index, output_index; | |
6650 | int escaped; | |
6651 | ||
6652 | output_index = 0; | |
6653 | escaped = 0; | |
6654 | for (input_index = 0; input_index < len; input_index++) | |
6655 | { | |
6656 | gdb_byte b = buffer[input_index]; | |
6657 | ||
6658 | if (output_index + 1 > out_maxlen) | |
6659 | { | |
6660 | warning (_("Received too much data from remote target;" | |
6661 | " ignoring overflow.")); | |
6662 | return output_index; | |
6663 | } | |
6664 | ||
6665 | if (escaped) | |
6666 | { | |
6667 | out_buf[output_index++] = b ^ 0x20; | |
6668 | escaped = 0; | |
6669 | } | |
6670 | else if (b == '}') | |
6671 | escaped = 1; | |
6672 | else | |
6673 | out_buf[output_index++] = b; | |
6674 | } | |
6675 | ||
6676 | if (escaped) | |
6677 | error (_("Unmatched escape character in target response.")); | |
6678 | ||
6679 | return output_index; | |
6680 | } | |
6681 | ||
c906108c SS |
6682 | /* Determine whether the remote target supports binary downloading. |
6683 | This is accomplished by sending a no-op memory write of zero length | |
6684 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6685 | the whole packet, since many stubs strip the eighth bit and |
6686 | subsequently compute a wrong checksum, which causes real havoc with | |
6687 | remote_write_bytes. | |
7a292a7a | 6688 | |
96baa820 | 6689 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6690 | clean. In cases like this, the user should clear "remote |
23860348 | 6691 | X-packet". */ |
96baa820 | 6692 | |
c906108c | 6693 | static void |
fba45db2 | 6694 | check_binary_download (CORE_ADDR addr) |
c906108c | 6695 | { |
d01949b6 | 6696 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6697 | |
444abaca | 6698 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6699 | { |
96baa820 JM |
6700 | case PACKET_DISABLE: |
6701 | break; | |
6702 | case PACKET_ENABLE: | |
6703 | break; | |
6704 | case PACKET_SUPPORT_UNKNOWN: | |
6705 | { | |
96baa820 | 6706 | char *p; |
802188a7 | 6707 | |
2e9f7625 | 6708 | p = rs->buf; |
96baa820 JM |
6709 | *p++ = 'X'; |
6710 | p += hexnumstr (p, (ULONGEST) addr); | |
6711 | *p++ = ','; | |
6712 | p += hexnumstr (p, (ULONGEST) 0); | |
6713 | *p++ = ':'; | |
6714 | *p = '\0'; | |
802188a7 | 6715 | |
2e9f7625 | 6716 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6717 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6718 | |
2e9f7625 | 6719 | if (rs->buf[0] == '\0') |
96baa820 JM |
6720 | { |
6721 | if (remote_debug) | |
6722 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6723 | "binary downloading NOT " |
6724 | "supported by target\n"); | |
444abaca | 6725 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6726 | } |
6727 | else | |
6728 | { | |
6729 | if (remote_debug) | |
6730 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6731 | "binary downloading supported by target\n"); |
444abaca | 6732 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6733 | } |
6734 | break; | |
6735 | } | |
c906108c SS |
6736 | } |
6737 | } | |
6738 | ||
6739 | /* Write memory data directly to the remote machine. | |
6740 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6741 | HEADER is the starting part of the packet. |
c906108c SS |
6742 | MEMADDR is the address in the remote memory space. |
6743 | MYADDR is the address of the buffer in our space. | |
6744 | LEN is the number of bytes. | |
a76d924d DJ |
6745 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6746 | should send data as binary ('X'), or hex-encoded ('M'). | |
6747 | ||
6748 | The function creates packet of the form | |
6749 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6750 | ||
6751 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6752 | ||
6753 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6754 | are omitted. | |
6755 | ||
00d84524 PA |
6756 | Returns the number of bytes transferred, or a negative value (an |
6757 | 'enum target_xfer_error' value) for error. Only transfer a single | |
6758 | packet. */ | |
c906108c | 6759 | |
00d84524 | 6760 | static LONGEST |
a76d924d | 6761 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
45aa4659 | 6762 | const gdb_byte *myaddr, ssize_t len, |
a76d924d | 6763 | char packet_format, int use_length) |
c906108c | 6764 | { |
6d820c5c | 6765 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6766 | char *p; |
a76d924d DJ |
6767 | char *plen = NULL; |
6768 | int plenlen = 0; | |
917317f4 JM |
6769 | int todo; |
6770 | int nr_bytes; | |
a257b5bb | 6771 | int payload_size; |
6765f3e5 | 6772 | int payload_length; |
a76d924d DJ |
6773 | int header_length; |
6774 | ||
6775 | if (packet_format != 'X' && packet_format != 'M') | |
6776 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6777 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6778 | |
b2182ed2 DJ |
6779 | if (len <= 0) |
6780 | return 0; | |
6781 | ||
3de11b2e | 6782 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6783 | |
6d820c5c DJ |
6784 | /* The packet buffer will be large enough for the payload; |
6785 | get_memory_packet_size ensures this. */ | |
a76d924d | 6786 | rs->buf[0] = '\0'; |
c906108c | 6787 | |
a257b5bb | 6788 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6789 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6790 | ||
a76d924d DJ |
6791 | payload_size -= strlen ("$,:#NN"); |
6792 | if (!use_length) | |
0df8b418 | 6793 | /* The comma won't be used. */ |
a76d924d DJ |
6794 | payload_size += 1; |
6795 | header_length = strlen (header); | |
6796 | payload_size -= header_length; | |
3de11b2e | 6797 | payload_size -= hexnumlen (memaddr); |
c906108c | 6798 | |
a76d924d | 6799 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6800 | |
a76d924d DJ |
6801 | strcat (rs->buf, header); |
6802 | p = rs->buf + strlen (header); | |
6803 | ||
6804 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6805 | if (packet_format == 'X') | |
c906108c | 6806 | { |
23860348 | 6807 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6808 | todo = min (len, payload_size); |
a76d924d DJ |
6809 | if (use_length) |
6810 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6811 | todo = min (todo, payload_size); |
a76d924d DJ |
6812 | } |
6813 | else | |
6814 | { | |
23860348 | 6815 | /* Num bytes that will fit. */ |
a257b5bb | 6816 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6817 | if (use_length) |
6818 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6819 | todo = min (todo, payload_size / 2); |
917317f4 | 6820 | } |
a76d924d | 6821 | |
3de11b2e NS |
6822 | if (todo <= 0) |
6823 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6824 | _("minimum packet size too small to write data")); |
802188a7 | 6825 | |
6765f3e5 DJ |
6826 | /* If we already need another packet, then try to align the end |
6827 | of this packet to a useful boundary. */ | |
6828 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6829 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6830 | ||
a257b5bb | 6831 | /* Append "<memaddr>". */ |
917317f4 JM |
6832 | memaddr = remote_address_masked (memaddr); |
6833 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6834 | |
a76d924d DJ |
6835 | if (use_length) |
6836 | { | |
6837 | /* Append ",". */ | |
6838 | *p++ = ','; | |
802188a7 | 6839 | |
a76d924d DJ |
6840 | /* Append <len>. Retain the location/size of <len>. It may need to |
6841 | be adjusted once the packet body has been created. */ | |
6842 | plen = p; | |
6843 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6844 | p += plenlen; | |
6845 | } | |
a257b5bb AC |
6846 | |
6847 | /* Append ":". */ | |
917317f4 JM |
6848 | *p++ = ':'; |
6849 | *p = '\0'; | |
802188a7 | 6850 | |
a257b5bb | 6851 | /* Append the packet body. */ |
a76d924d | 6852 | if (packet_format == 'X') |
917317f4 | 6853 | { |
917317f4 JM |
6854 | /* Binary mode. Send target system values byte by byte, in |
6855 | increasing byte addresses. Only escape certain critical | |
6856 | characters. */ | |
bc20a4af PA |
6857 | payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p, |
6858 | &nr_bytes, payload_size); | |
6765f3e5 DJ |
6859 | |
6860 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6861 | a second try to keep the end of the packet aligned. Don't do |
6862 | this if the packet is tiny. */ | |
6863 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6864 | { |
6865 | int new_nr_bytes; | |
6866 | ||
6867 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6868 | - memaddr); | |
6869 | if (new_nr_bytes != nr_bytes) | |
6870 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
bc20a4af | 6871 | (gdb_byte *) p, &nr_bytes, |
6765f3e5 DJ |
6872 | payload_size); |
6873 | } | |
6874 | ||
6875 | p += payload_length; | |
a76d924d | 6876 | if (use_length && nr_bytes < todo) |
c906108c | 6877 | { |
802188a7 | 6878 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6879 | and we have actually sent fewer bytes than planned. |
6880 | Fix-up the length field of the packet. Use the same | |
6881 | number of characters as before. */ | |
917317f4 JM |
6882 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6883 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6884 | } |
a76d924d DJ |
6885 | } |
6886 | else | |
6887 | { | |
917317f4 JM |
6888 | /* Normal mode: Send target system values byte by byte, in |
6889 | increasing byte addresses. Each byte is encoded as a two hex | |
6890 | value. */ | |
2644f393 | 6891 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6892 | p += 2 * nr_bytes; |
c906108c | 6893 | } |
802188a7 | 6894 | |
2e9f7625 | 6895 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6896 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6897 | |
2e9f7625 | 6898 | if (rs->buf[0] == 'E') |
00d84524 | 6899 | return TARGET_XFER_E_IO; |
802188a7 | 6900 | |
23860348 MS |
6901 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6902 | fewer bytes than we'd planned. */ | |
917317f4 | 6903 | return nr_bytes; |
c906108c SS |
6904 | } |
6905 | ||
a76d924d DJ |
6906 | /* Write memory data directly to the remote machine. |
6907 | This does not inform the data cache; the data cache uses this. | |
6908 | MEMADDR is the address in the remote memory space. | |
6909 | MYADDR is the address of the buffer in our space. | |
6910 | LEN is the number of bytes. | |
6911 | ||
00d84524 PA |
6912 | Returns number of bytes transferred, or a negative value (an 'enum |
6913 | target_xfer_error' value) for error. Only transfer a single | |
6914 | packet. */ | |
a76d924d | 6915 | |
00d84524 | 6916 | static LONGEST |
45aa4659 | 6917 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
a76d924d DJ |
6918 | { |
6919 | char *packet_format = 0; | |
6920 | ||
6921 | /* Check whether the target supports binary download. */ | |
6922 | check_binary_download (memaddr); | |
6923 | ||
6924 | switch (remote_protocol_packets[PACKET_X].support) | |
6925 | { | |
6926 | case PACKET_ENABLE: | |
6927 | packet_format = "X"; | |
6928 | break; | |
6929 | case PACKET_DISABLE: | |
6930 | packet_format = "M"; | |
6931 | break; | |
6932 | case PACKET_SUPPORT_UNKNOWN: | |
6933 | internal_error (__FILE__, __LINE__, | |
6934 | _("remote_write_bytes: bad internal state")); | |
6935 | default: | |
6936 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6937 | } | |
6938 | ||
6939 | return remote_write_bytes_aux (packet_format, | |
6940 | memaddr, myaddr, len, packet_format[0], 1); | |
6941 | } | |
6942 | ||
c906108c SS |
6943 | /* Read memory data directly from the remote machine. |
6944 | This does not use the data cache; the data cache uses this. | |
6945 | MEMADDR is the address in the remote memory space. | |
6946 | MYADDR is the address of the buffer in our space. | |
6947 | LEN is the number of bytes. | |
6948 | ||
00d84524 PA |
6949 | Returns number of bytes transferred, or a negative value (an 'enum |
6950 | target_xfer_error' value) for error. */ | |
c906108c | 6951 | |
00d84524 | 6952 | static LONGEST |
cfd77fa1 | 6953 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6954 | { |
6d820c5c | 6955 | struct remote_state *rs = get_remote_state (); |
23860348 | 6956 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6957 | char *p; |
6958 | int todo; | |
6959 | int i; | |
c906108c | 6960 | |
b2182ed2 DJ |
6961 | if (len <= 0) |
6962 | return 0; | |
6963 | ||
11cf8741 | 6964 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6965 | /* The packet buffer will be large enough for the payload; |
6966 | get_memory_packet_size ensures this. */ | |
c906108c | 6967 | |
f7605bc2 PA |
6968 | /* Number if bytes that will fit. */ |
6969 | todo = min (len, max_buf_size / 2); | |
c906108c | 6970 | |
f7605bc2 PA |
6971 | /* Construct "m"<memaddr>","<len>". */ |
6972 | memaddr = remote_address_masked (memaddr); | |
6973 | p = rs->buf; | |
6974 | *p++ = 'm'; | |
6975 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6976 | *p++ = ','; | |
6977 | p += hexnumstr (p, (ULONGEST) todo); | |
6978 | *p = '\0'; | |
6979 | putpkt (rs->buf); | |
6980 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6981 | if (rs->buf[0] == 'E' | |
6982 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6983 | && rs->buf[3] == '\0') | |
00d84524 | 6984 | return TARGET_XFER_E_IO; |
f7605bc2 PA |
6985 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6986 | characters. */ | |
6987 | p = rs->buf; | |
6988 | i = hex2bin (p, myaddr, todo); | |
6989 | /* Return what we have. Let higher layers handle partial reads. */ | |
6990 | return i; | |
c906108c | 6991 | } |
74531fed | 6992 | |
c906108c | 6993 | \f |
c906108c | 6994 | |
a76d924d DJ |
6995 | /* Sends a packet with content determined by the printf format string |
6996 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6997 | whether the packet was a success, a failure, or unknown. */ | |
6998 | ||
2c0b251b | 6999 | static enum packet_result |
a76d924d DJ |
7000 | remote_send_printf (const char *format, ...) |
7001 | { | |
7002 | struct remote_state *rs = get_remote_state (); | |
7003 | int max_size = get_remote_packet_size (); | |
a76d924d | 7004 | va_list ap; |
a744cf53 | 7005 | |
a76d924d DJ |
7006 | va_start (ap, format); |
7007 | ||
7008 | rs->buf[0] = '\0'; | |
7009 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7010 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7011 | |
7012 | if (putpkt (rs->buf) < 0) | |
7013 | error (_("Communication problem with target.")); | |
7014 | ||
7015 | rs->buf[0] = '\0'; | |
7016 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7017 | ||
7018 | return packet_check_result (rs->buf); | |
7019 | } | |
7020 | ||
7021 | static void | |
7022 | restore_remote_timeout (void *p) | |
7023 | { | |
7024 | int value = *(int *)p; | |
a744cf53 | 7025 | |
a76d924d DJ |
7026 | remote_timeout = value; |
7027 | } | |
7028 | ||
7029 | /* Flash writing can take quite some time. We'll set | |
7030 | effectively infinite timeout for flash operations. | |
7031 | In future, we'll need to decide on a better approach. */ | |
7032 | static const int remote_flash_timeout = 1000; | |
7033 | ||
7034 | static void | |
7035 | remote_flash_erase (struct target_ops *ops, | |
7036 | ULONGEST address, LONGEST length) | |
7037 | { | |
f5656ead | 7038 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7039 | int saved_remote_timeout = remote_timeout; |
7040 | enum packet_result ret; | |
a76d924d DJ |
7041 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7042 | &saved_remote_timeout); | |
a744cf53 | 7043 | |
a76d924d DJ |
7044 | remote_timeout = remote_flash_timeout; |
7045 | ||
7046 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7047 | phex (address, addr_size), |
a76d924d DJ |
7048 | phex (length, 4)); |
7049 | switch (ret) | |
7050 | { | |
7051 | case PACKET_UNKNOWN: | |
7052 | error (_("Remote target does not support flash erase")); | |
7053 | case PACKET_ERROR: | |
7054 | error (_("Error erasing flash with vFlashErase packet")); | |
7055 | default: | |
7056 | break; | |
7057 | } | |
7058 | ||
7059 | do_cleanups (back_to); | |
7060 | } | |
7061 | ||
7062 | static LONGEST | |
7063 | remote_flash_write (struct target_ops *ops, | |
7064 | ULONGEST address, LONGEST length, | |
7065 | const gdb_byte *data) | |
7066 | { | |
7067 | int saved_remote_timeout = remote_timeout; | |
00d84524 | 7068 | LONGEST ret; |
a76d924d DJ |
7069 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7070 | &saved_remote_timeout); | |
7071 | ||
7072 | remote_timeout = remote_flash_timeout; | |
7073 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
7074 | do_cleanups (back_to); | |
7075 | ||
7076 | return ret; | |
7077 | } | |
7078 | ||
7079 | static void | |
7080 | remote_flash_done (struct target_ops *ops) | |
7081 | { | |
7082 | int saved_remote_timeout = remote_timeout; | |
7083 | int ret; | |
7084 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7085 | &saved_remote_timeout); | |
7086 | ||
7087 | remote_timeout = remote_flash_timeout; | |
7088 | ret = remote_send_printf ("vFlashDone"); | |
7089 | do_cleanups (back_to); | |
7090 | ||
7091 | switch (ret) | |
7092 | { | |
7093 | case PACKET_UNKNOWN: | |
7094 | error (_("Remote target does not support vFlashDone")); | |
7095 | case PACKET_ERROR: | |
7096 | error (_("Error finishing flash operation")); | |
7097 | default: | |
7098 | break; | |
7099 | } | |
7100 | } | |
7101 | ||
c906108c | 7102 | static void |
fba45db2 | 7103 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7104 | { |
7105 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7106 | } | |
7107 | \f | |
7108 | /* Stuff for dealing with the packets which are part of this protocol. | |
7109 | See comment at top of file for details. */ | |
7110 | ||
1927e618 PA |
7111 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7112 | error to higher layers. Called when a serial error is detected. | |
7113 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7114 | the system error message for errno at function entry and final dot |
7115 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7116 | |
7117 | static void | |
7118 | unpush_and_perror (const char *string) | |
7119 | { | |
d6cb50a2 | 7120 | int saved_errno = errno; |
1927e618 PA |
7121 | |
7122 | remote_unpush_target (); | |
d6cb50a2 JK |
7123 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7124 | safe_strerror (saved_errno)); | |
1927e618 PA |
7125 | } |
7126 | ||
0876f84a | 7127 | /* Read a single character from the remote end. */ |
c906108c SS |
7128 | |
7129 | static int | |
fba45db2 | 7130 | readchar (int timeout) |
c906108c SS |
7131 | { |
7132 | int ch; | |
5d93a237 | 7133 | struct remote_state *rs = get_remote_state (); |
c906108c | 7134 | |
5d93a237 | 7135 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7136 | |
2acceee2 | 7137 | if (ch >= 0) |
0876f84a | 7138 | return ch; |
2acceee2 JM |
7139 | |
7140 | switch ((enum serial_rc) ch) | |
c906108c SS |
7141 | { |
7142 | case SERIAL_EOF: | |
78a095c3 | 7143 | remote_unpush_target (); |
598d3636 | 7144 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7145 | /* no return */ |
c906108c | 7146 | case SERIAL_ERROR: |
1927e618 PA |
7147 | unpush_and_perror (_("Remote communication error. " |
7148 | "Target disconnected.")); | |
2acceee2 | 7149 | /* no return */ |
c906108c | 7150 | case SERIAL_TIMEOUT: |
2acceee2 | 7151 | break; |
c906108c | 7152 | } |
2acceee2 | 7153 | return ch; |
c906108c SS |
7154 | } |
7155 | ||
c33e31fd PA |
7156 | /* Wrapper for serial_write that closes the target and throws if |
7157 | writing fails. */ | |
7158 | ||
7159 | static void | |
7160 | remote_serial_write (const char *str, int len) | |
7161 | { | |
5d93a237 TT |
7162 | struct remote_state *rs = get_remote_state (); |
7163 | ||
7164 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7165 | { |
1927e618 PA |
7166 | unpush_and_perror (_("Remote communication error. " |
7167 | "Target disconnected.")); | |
c33e31fd PA |
7168 | } |
7169 | } | |
7170 | ||
6d820c5c DJ |
7171 | /* Send the command in *BUF to the remote machine, and read the reply |
7172 | into *BUF. Report an error if we get an error reply. Resize | |
7173 | *BUF using xrealloc if necessary to hold the result, and update | |
7174 | *SIZEOF_BUF. */ | |
c906108c SS |
7175 | |
7176 | static void | |
6d820c5c DJ |
7177 | remote_send (char **buf, |
7178 | long *sizeof_buf) | |
c906108c | 7179 | { |
6d820c5c | 7180 | putpkt (*buf); |
c2d11a7d | 7181 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7182 | |
6d820c5c DJ |
7183 | if ((*buf)[0] == 'E') |
7184 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7185 | } |
7186 | ||
6e5abd65 PA |
7187 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7188 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7189 | etc. The caller is responsible for releasing the returned | |
7190 | memory. */ | |
7191 | ||
7192 | static char * | |
7193 | escape_buffer (const char *buf, int n) | |
7194 | { | |
7195 | struct cleanup *old_chain; | |
7196 | struct ui_file *stb; | |
7197 | char *str; | |
6e5abd65 PA |
7198 | |
7199 | stb = mem_fileopen (); | |
7200 | old_chain = make_cleanup_ui_file_delete (stb); | |
7201 | ||
7202 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 7203 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7204 | do_cleanups (old_chain); |
7205 | return str; | |
7206 | } | |
7207 | ||
c906108c SS |
7208 | /* Display a null-terminated packet on stdout, for debugging, using C |
7209 | string notation. */ | |
7210 | ||
7211 | static void | |
fba45db2 | 7212 | print_packet (char *buf) |
c906108c SS |
7213 | { |
7214 | puts_filtered ("\""); | |
43e526b9 | 7215 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7216 | puts_filtered ("\""); |
7217 | } | |
7218 | ||
7219 | int | |
fba45db2 | 7220 | putpkt (char *buf) |
c906108c SS |
7221 | { |
7222 | return putpkt_binary (buf, strlen (buf)); | |
7223 | } | |
7224 | ||
7225 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7226 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7227 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7228 | and for a possible /0 if we are debugging (remote_debug) and want |
7229 | to print the sent packet as a string. */ | |
c906108c SS |
7230 | |
7231 | static int | |
fba45db2 | 7232 | putpkt_binary (char *buf, int cnt) |
c906108c | 7233 | { |
2d717e4f | 7234 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7235 | int i; |
7236 | unsigned char csum = 0; | |
11cf8741 | 7237 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7238 | |
c906108c SS |
7239 | int ch; |
7240 | int tcount = 0; | |
7241 | char *p; | |
dd61ec5c | 7242 | char *message; |
c906108c | 7243 | |
e24a49d8 PA |
7244 | /* Catch cases like trying to read memory or listing threads while |
7245 | we're waiting for a stop reply. The remote server wouldn't be | |
7246 | ready to handle this request, so we'd hang and timeout. We don't | |
7247 | have to worry about this in synchronous mode, because in that | |
7248 | case it's not possible to issue a command while the target is | |
74531fed PA |
7249 | running. This is not a problem in non-stop mode, because in that |
7250 | case, the stub is always ready to process serial input. */ | |
7251 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
7252 | error (_("Cannot execute this command while the target is running.")); |
7253 | ||
2d717e4f DJ |
7254 | /* We're sending out a new packet. Make sure we don't look at a |
7255 | stale cached response. */ | |
7256 | rs->cached_wait_status = 0; | |
7257 | ||
c906108c SS |
7258 | /* Copy the packet into buffer BUF2, encapsulating it |
7259 | and giving it a checksum. */ | |
7260 | ||
c906108c SS |
7261 | p = buf2; |
7262 | *p++ = '$'; | |
7263 | ||
7264 | for (i = 0; i < cnt; i++) | |
7265 | { | |
7266 | csum += buf[i]; | |
7267 | *p++ = buf[i]; | |
7268 | } | |
7269 | *p++ = '#'; | |
7270 | *p++ = tohex ((csum >> 4) & 0xf); | |
7271 | *p++ = tohex (csum & 0xf); | |
7272 | ||
7273 | /* Send it over and over until we get a positive ack. */ | |
7274 | ||
7275 | while (1) | |
7276 | { | |
7277 | int started_error_output = 0; | |
7278 | ||
7279 | if (remote_debug) | |
7280 | { | |
6e5abd65 PA |
7281 | struct cleanup *old_chain; |
7282 | char *str; | |
7283 | ||
c906108c | 7284 | *p = '\0'; |
6e5abd65 PA |
7285 | str = escape_buffer (buf2, p - buf2); |
7286 | old_chain = make_cleanup (xfree, str); | |
7287 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7288 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7289 | do_cleanups (old_chain); |
c906108c | 7290 | } |
c33e31fd | 7291 | remote_serial_write (buf2, p - buf2); |
c906108c | 7292 | |
a6f3e723 SL |
7293 | /* If this is a no acks version of the remote protocol, send the |
7294 | packet and move on. */ | |
7295 | if (rs->noack_mode) | |
7296 | break; | |
7297 | ||
74531fed PA |
7298 | /* Read until either a timeout occurs (-2) or '+' is read. |
7299 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7300 | while (1) |
7301 | { | |
7302 | ch = readchar (remote_timeout); | |
7303 | ||
c5aa993b | 7304 | if (remote_debug) |
c906108c SS |
7305 | { |
7306 | switch (ch) | |
7307 | { | |
7308 | case '+': | |
1216fa2c | 7309 | case '-': |
c906108c SS |
7310 | case SERIAL_TIMEOUT: |
7311 | case '$': | |
74531fed | 7312 | case '%': |
c906108c SS |
7313 | if (started_error_output) |
7314 | { | |
7315 | putchar_unfiltered ('\n'); | |
7316 | started_error_output = 0; | |
7317 | } | |
7318 | } | |
7319 | } | |
7320 | ||
7321 | switch (ch) | |
7322 | { | |
7323 | case '+': | |
7324 | if (remote_debug) | |
0f71a2f6 | 7325 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7326 | return 1; |
1216fa2c AC |
7327 | case '-': |
7328 | if (remote_debug) | |
7329 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7330 | /* FALLTHROUGH */ |
c906108c | 7331 | case SERIAL_TIMEOUT: |
c5aa993b | 7332 | tcount++; |
c906108c SS |
7333 | if (tcount > 3) |
7334 | return 0; | |
23860348 | 7335 | break; /* Retransmit buffer. */ |
c906108c SS |
7336 | case '$': |
7337 | { | |
40e3f985 | 7338 | if (remote_debug) |
2bc416ba | 7339 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7340 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7341 | /* It's probably an old response sent because an ACK |
7342 | was lost. Gobble up the packet and ack it so it | |
7343 | doesn't get retransmitted when we resend this | |
7344 | packet. */ | |
6d820c5c | 7345 | skip_frame (); |
c33e31fd | 7346 | remote_serial_write ("+", 1); |
23860348 | 7347 | continue; /* Now, go look for +. */ |
c906108c | 7348 | } |
74531fed PA |
7349 | |
7350 | case '%': | |
7351 | { | |
7352 | int val; | |
7353 | ||
7354 | /* If we got a notification, handle it, and go back to looking | |
7355 | for an ack. */ | |
7356 | /* We've found the start of a notification. Now | |
7357 | collect the data. */ | |
7358 | val = read_frame (&rs->buf, &rs->buf_size); | |
7359 | if (val >= 0) | |
7360 | { | |
7361 | if (remote_debug) | |
7362 | { | |
6e5abd65 PA |
7363 | struct cleanup *old_chain; |
7364 | char *str; | |
7365 | ||
7366 | str = escape_buffer (rs->buf, val); | |
7367 | old_chain = make_cleanup (xfree, str); | |
7368 | fprintf_unfiltered (gdb_stdlog, | |
7369 | " Notification received: %s\n", | |
7370 | str); | |
7371 | do_cleanups (old_chain); | |
74531fed | 7372 | } |
5965e028 | 7373 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7374 | /* We're in sync now, rewait for the ack. */ |
7375 | tcount = 0; | |
7376 | } | |
7377 | else | |
7378 | { | |
7379 | if (remote_debug) | |
7380 | { | |
7381 | if (!started_error_output) | |
7382 | { | |
7383 | started_error_output = 1; | |
7384 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7385 | } | |
7386 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7387 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7388 | } | |
7389 | } | |
7390 | continue; | |
7391 | } | |
7392 | /* fall-through */ | |
c906108c SS |
7393 | default: |
7394 | if (remote_debug) | |
7395 | { | |
7396 | if (!started_error_output) | |
7397 | { | |
7398 | started_error_output = 1; | |
0f71a2f6 | 7399 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7400 | } |
0f71a2f6 | 7401 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7402 | } |
7403 | continue; | |
7404 | } | |
23860348 | 7405 | break; /* Here to retransmit. */ |
c906108c SS |
7406 | } |
7407 | ||
7408 | #if 0 | |
7409 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7410 | able to get out next time we call QUIT, without anything as |
7411 | violent as interrupt_query. If we want to provide a way out of | |
7412 | here without getting to the next QUIT, it should be based on | |
7413 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7414 | if (quit_flag) |
7415 | { | |
7416 | quit_flag = 0; | |
7417 | interrupt_query (); | |
7418 | } | |
7419 | #endif | |
7420 | } | |
a6f3e723 | 7421 | return 0; |
c906108c SS |
7422 | } |
7423 | ||
6d820c5c DJ |
7424 | /* Come here after finding the start of a frame when we expected an |
7425 | ack. Do our best to discard the rest of this packet. */ | |
7426 | ||
7427 | static void | |
7428 | skip_frame (void) | |
7429 | { | |
7430 | int c; | |
7431 | ||
7432 | while (1) | |
7433 | { | |
7434 | c = readchar (remote_timeout); | |
7435 | switch (c) | |
7436 | { | |
7437 | case SERIAL_TIMEOUT: | |
7438 | /* Nothing we can do. */ | |
7439 | return; | |
7440 | case '#': | |
7441 | /* Discard the two bytes of checksum and stop. */ | |
7442 | c = readchar (remote_timeout); | |
7443 | if (c >= 0) | |
7444 | c = readchar (remote_timeout); | |
7445 | ||
7446 | return; | |
7447 | case '*': /* Run length encoding. */ | |
7448 | /* Discard the repeat count. */ | |
7449 | c = readchar (remote_timeout); | |
7450 | if (c < 0) | |
7451 | return; | |
7452 | break; | |
7453 | default: | |
7454 | /* A regular character. */ | |
7455 | break; | |
7456 | } | |
7457 | } | |
7458 | } | |
7459 | ||
c906108c | 7460 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7461 | into *BUF, verifying the checksum, length, and handling run-length |
7462 | compression. NUL terminate the buffer. If there is not enough room, | |
7463 | expand *BUF using xrealloc. | |
c906108c | 7464 | |
c2d11a7d JM |
7465 | Returns -1 on error, number of characters in buffer (ignoring the |
7466 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7467 | SERIAL status indications). */ |
c2d11a7d JM |
7468 | |
7469 | static long | |
6d820c5c DJ |
7470 | read_frame (char **buf_p, |
7471 | long *sizeof_buf) | |
c906108c SS |
7472 | { |
7473 | unsigned char csum; | |
c2d11a7d | 7474 | long bc; |
c906108c | 7475 | int c; |
6d820c5c | 7476 | char *buf = *buf_p; |
a6f3e723 | 7477 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7478 | |
7479 | csum = 0; | |
c2d11a7d | 7480 | bc = 0; |
c906108c SS |
7481 | |
7482 | while (1) | |
7483 | { | |
7484 | c = readchar (remote_timeout); | |
c906108c SS |
7485 | switch (c) |
7486 | { | |
7487 | case SERIAL_TIMEOUT: | |
7488 | if (remote_debug) | |
0f71a2f6 | 7489 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7490 | return -1; |
c906108c SS |
7491 | case '$': |
7492 | if (remote_debug) | |
0f71a2f6 JM |
7493 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7494 | gdb_stdlog); | |
23860348 | 7495 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7496 | case '#': |
7497 | { | |
7498 | unsigned char pktcsum; | |
e1b09194 AC |
7499 | int check_0 = 0; |
7500 | int check_1 = 0; | |
c906108c | 7501 | |
c2d11a7d | 7502 | buf[bc] = '\0'; |
c906108c | 7503 | |
e1b09194 AC |
7504 | check_0 = readchar (remote_timeout); |
7505 | if (check_0 >= 0) | |
7506 | check_1 = readchar (remote_timeout); | |
802188a7 | 7507 | |
e1b09194 AC |
7508 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7509 | { | |
7510 | if (remote_debug) | |
2bc416ba | 7511 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7512 | gdb_stdlog); |
e1b09194 AC |
7513 | return -1; |
7514 | } | |
7515 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7516 | { |
7517 | if (remote_debug) | |
2bc416ba | 7518 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7519 | gdb_stdlog); |
40e3f985 FN |
7520 | return -1; |
7521 | } | |
c906108c | 7522 | |
a6f3e723 SL |
7523 | /* Don't recompute the checksum; with no ack packets we |
7524 | don't have any way to indicate a packet retransmission | |
7525 | is necessary. */ | |
7526 | if (rs->noack_mode) | |
7527 | return bc; | |
7528 | ||
e1b09194 | 7529 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7530 | if (csum == pktcsum) |
c2d11a7d | 7531 | return bc; |
c906108c | 7532 | |
c5aa993b | 7533 | if (remote_debug) |
c906108c | 7534 | { |
6e5abd65 PA |
7535 | struct cleanup *old_chain; |
7536 | char *str; | |
7537 | ||
7538 | str = escape_buffer (buf, bc); | |
7539 | old_chain = make_cleanup (xfree, str); | |
7540 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7541 | "Bad checksum, sentsum=0x%x, " |
7542 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7543 | pktcsum, csum, str); |
7544 | do_cleanups (old_chain); | |
c906108c | 7545 | } |
c2d11a7d | 7546 | /* Number of characters in buffer ignoring trailing |
23860348 | 7547 | NULL. */ |
c2d11a7d | 7548 | return -1; |
c906108c | 7549 | } |
23860348 | 7550 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7551 | { |
7552 | int repeat; | |
c906108c | 7553 | |
a744cf53 | 7554 | csum += c; |
b4501125 AC |
7555 | c = readchar (remote_timeout); |
7556 | csum += c; | |
23860348 | 7557 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7558 | |
23860348 | 7559 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7560 | |
6d820c5c | 7561 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7562 | { |
6d820c5c DJ |
7563 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7564 | { | |
7565 | /* Make some more room in the buffer. */ | |
7566 | *sizeof_buf += repeat; | |
7567 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7568 | buf = *buf_p; | |
7569 | } | |
7570 | ||
c2d11a7d JM |
7571 | memset (&buf[bc], buf[bc - 1], repeat); |
7572 | bc += repeat; | |
c2c6d25f JM |
7573 | continue; |
7574 | } | |
7575 | ||
c2d11a7d | 7576 | buf[bc] = '\0'; |
6d820c5c | 7577 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7578 | return -1; |
c2c6d25f | 7579 | } |
c906108c | 7580 | default: |
6d820c5c | 7581 | if (bc >= *sizeof_buf - 1) |
c906108c | 7582 | { |
6d820c5c DJ |
7583 | /* Make some more room in the buffer. */ |
7584 | *sizeof_buf *= 2; | |
7585 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7586 | buf = *buf_p; | |
c906108c SS |
7587 | } |
7588 | ||
6d820c5c DJ |
7589 | buf[bc++] = c; |
7590 | csum += c; | |
7591 | continue; | |
c906108c SS |
7592 | } |
7593 | } | |
7594 | } | |
7595 | ||
7596 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7597 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7598 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7599 | rather than timing out; this is used (in synchronous mode) to wait | |
7600 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7601 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7602 | don't have to change all the calls to getpkt to deal with the | |
7603 | return value, because at the moment I don't know what the right | |
23860348 | 7604 | thing to do it for those. */ |
c906108c | 7605 | void |
6d820c5c DJ |
7606 | getpkt (char **buf, |
7607 | long *sizeof_buf, | |
c2d11a7d | 7608 | int forever) |
d9fcf2fb JM |
7609 | { |
7610 | int timed_out; | |
7611 | ||
7612 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7613 | } | |
7614 | ||
7615 | ||
7616 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7617 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7618 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7619 | rather than timing out; this is used (in synchronous mode) to wait | |
7620 | for a target that is is executing user code to stop. If FOREVER == | |
7621 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7622 | indication of this to the caller. Otherwise return the number of |
7623 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
7624 | enough reason to return to the caller. *IS_NOTIF is an output |
7625 | boolean that indicates whether *BUF holds a notification or not | |
7626 | (a regular packet). */ | |
74531fed | 7627 | |
3172dc30 | 7628 | static int |
74531fed | 7629 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 7630 | int expecting_notif, int *is_notif) |
c906108c | 7631 | { |
2d717e4f | 7632 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7633 | int c; |
7634 | int tries; | |
7635 | int timeout; | |
df4b58fe | 7636 | int val = -1; |
c906108c | 7637 | |
2d717e4f DJ |
7638 | /* We're reading a new response. Make sure we don't look at a |
7639 | previously cached response. */ | |
7640 | rs->cached_wait_status = 0; | |
7641 | ||
6d820c5c | 7642 | strcpy (*buf, "timeout"); |
c906108c SS |
7643 | |
7644 | if (forever) | |
74531fed PA |
7645 | timeout = watchdog > 0 ? watchdog : -1; |
7646 | else if (expecting_notif) | |
7647 | timeout = 0; /* There should already be a char in the buffer. If | |
7648 | not, bail out. */ | |
c906108c SS |
7649 | else |
7650 | timeout = remote_timeout; | |
7651 | ||
7652 | #define MAX_TRIES 3 | |
7653 | ||
74531fed PA |
7654 | /* Process any number of notifications, and then return when |
7655 | we get a packet. */ | |
7656 | for (;;) | |
c906108c | 7657 | { |
74531fed PA |
7658 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7659 | times. */ | |
7660 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7661 | { |
74531fed PA |
7662 | /* This can loop forever if the remote side sends us |
7663 | characters continuously, but if it pauses, we'll get | |
7664 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7665 | we'll count that as a retry. | |
7666 | ||
7667 | Note that even when forever is set, we will only wait | |
7668 | forever prior to the start of a packet. After that, we | |
7669 | expect characters to arrive at a brisk pace. They should | |
7670 | show up within remote_timeout intervals. */ | |
7671 | do | |
7672 | c = readchar (timeout); | |
7673 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7674 | |
7675 | if (c == SERIAL_TIMEOUT) | |
7676 | { | |
74531fed PA |
7677 | if (expecting_notif) |
7678 | return -1; /* Don't complain, it's normal to not get | |
7679 | anything in this case. */ | |
7680 | ||
23860348 | 7681 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7682 | { |
2acceee2 | 7683 | QUIT; |
78a095c3 | 7684 | remote_unpush_target (); |
598d3636 JK |
7685 | throw_error (TARGET_CLOSE_ERROR, |
7686 | _("Watchdog timeout has expired. " | |
7687 | "Target detached.")); | |
c906108c | 7688 | } |
c906108c | 7689 | if (remote_debug) |
0f71a2f6 | 7690 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7691 | } |
74531fed PA |
7692 | else |
7693 | { | |
7694 | /* We've found the start of a packet or notification. | |
7695 | Now collect the data. */ | |
7696 | val = read_frame (buf, sizeof_buf); | |
7697 | if (val >= 0) | |
7698 | break; | |
7699 | } | |
7700 | ||
c33e31fd | 7701 | remote_serial_write ("-", 1); |
c906108c | 7702 | } |
c906108c | 7703 | |
74531fed PA |
7704 | if (tries > MAX_TRIES) |
7705 | { | |
7706 | /* We have tried hard enough, and just can't receive the | |
7707 | packet/notification. Give up. */ | |
7708 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7709 | |
74531fed PA |
7710 | /* Skip the ack char if we're in no-ack mode. */ |
7711 | if (!rs->noack_mode) | |
c33e31fd | 7712 | remote_serial_write ("+", 1); |
74531fed PA |
7713 | return -1; |
7714 | } | |
c906108c | 7715 | |
74531fed PA |
7716 | /* If we got an ordinary packet, return that to our caller. */ |
7717 | if (c == '$') | |
c906108c SS |
7718 | { |
7719 | if (remote_debug) | |
43e526b9 | 7720 | { |
6e5abd65 PA |
7721 | struct cleanup *old_chain; |
7722 | char *str; | |
7723 | ||
7724 | str = escape_buffer (*buf, val); | |
7725 | old_chain = make_cleanup (xfree, str); | |
7726 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7727 | do_cleanups (old_chain); | |
43e526b9 | 7728 | } |
a6f3e723 SL |
7729 | |
7730 | /* Skip the ack char if we're in no-ack mode. */ | |
7731 | if (!rs->noack_mode) | |
c33e31fd | 7732 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
7733 | if (is_notif != NULL) |
7734 | *is_notif = 0; | |
0876f84a | 7735 | return val; |
c906108c SS |
7736 | } |
7737 | ||
74531fed PA |
7738 | /* If we got a notification, handle it, and go back to looking |
7739 | for a packet. */ | |
7740 | else | |
7741 | { | |
7742 | gdb_assert (c == '%'); | |
7743 | ||
7744 | if (remote_debug) | |
7745 | { | |
6e5abd65 PA |
7746 | struct cleanup *old_chain; |
7747 | char *str; | |
7748 | ||
7749 | str = escape_buffer (*buf, val); | |
7750 | old_chain = make_cleanup (xfree, str); | |
7751 | fprintf_unfiltered (gdb_stdlog, | |
7752 | " Notification received: %s\n", | |
7753 | str); | |
7754 | do_cleanups (old_chain); | |
74531fed | 7755 | } |
fee9eda9 YQ |
7756 | if (is_notif != NULL) |
7757 | *is_notif = 1; | |
c906108c | 7758 | |
5965e028 | 7759 | handle_notification (rs->notif_state, *buf); |
c906108c | 7760 | |
74531fed | 7761 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7762 | |
74531fed | 7763 | if (expecting_notif) |
fee9eda9 | 7764 | return val; |
74531fed PA |
7765 | } |
7766 | } | |
7767 | } | |
7768 | ||
7769 | static int | |
7770 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7771 | { | |
fee9eda9 | 7772 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
7773 | } |
7774 | ||
7775 | static int | |
fee9eda9 YQ |
7776 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
7777 | int *is_notif) | |
74531fed | 7778 | { |
fee9eda9 YQ |
7779 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
7780 | is_notif); | |
c906108c | 7781 | } |
74531fed | 7782 | |
c906108c | 7783 | \f |
732f3f12 TT |
7784 | /* A helper function that just calls putpkt; for type correctness. */ |
7785 | ||
7786 | static int | |
7787 | putpkt_for_catch_errors (void *arg) | |
7788 | { | |
7789 | return putpkt (arg); | |
7790 | } | |
7791 | ||
c906108c | 7792 | static void |
7d85a9c0 | 7793 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7794 | { |
23860348 MS |
7795 | /* Use catch_errors so the user can quit from gdb even when we |
7796 | aren't on speaking terms with the remote system. */ | |
732f3f12 | 7797 | catch_errors (putpkt_for_catch_errors, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7798 | |
7799 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7800 | we do or not. For the existing stubs, kill is a noop. */ | |
7801 | target_mourn_inferior (); | |
7802 | } | |
7803 | ||
82f73884 PA |
7804 | static int |
7805 | remote_vkill (int pid, struct remote_state *rs) | |
7806 | { | |
7807 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7808 | return -1; | |
7809 | ||
7810 | /* Tell the remote target to detach. */ | |
bba74b36 | 7811 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7812 | putpkt (rs->buf); |
7813 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7814 | ||
7815 | if (packet_ok (rs->buf, | |
7816 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7817 | return 0; | |
7818 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7819 | return -1; | |
7820 | else | |
7821 | return 1; | |
7822 | } | |
7823 | ||
7824 | static void | |
7d85a9c0 | 7825 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7826 | { |
7827 | int res; | |
7828 | int pid = ptid_get_pid (inferior_ptid); | |
7829 | struct remote_state *rs = get_remote_state (); | |
7830 | ||
7831 | res = remote_vkill (pid, rs); | |
901f9912 | 7832 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7833 | { |
7834 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7835 | to specify the pid. */ | |
7836 | ||
7837 | putpkt ("k"); | |
7838 | #if 0 | |
7839 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7840 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7841 | res = 1; | |
7842 | #else | |
7843 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7844 | we do or not. For the existing stubs, kill is a noop. */ | |
7845 | res = 0; | |
7846 | #endif | |
7847 | } | |
7848 | ||
7849 | if (res != 0) | |
7850 | error (_("Can't kill process")); | |
7851 | ||
82f73884 PA |
7852 | target_mourn_inferior (); |
7853 | } | |
7854 | ||
c906108c | 7855 | static void |
136d6dae | 7856 | remote_mourn (struct target_ops *ops) |
c906108c | 7857 | { |
136d6dae | 7858 | remote_mourn_1 (ops); |
c906108c SS |
7859 | } |
7860 | ||
c906108c SS |
7861 | /* Worker function for remote_mourn. */ |
7862 | static void | |
fba45db2 | 7863 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7864 | { |
7865 | unpush_target (target); | |
ce5ce7ed | 7866 | |
8a2492ee PA |
7867 | /* remote_close takes care of doing most of the clean up. */ |
7868 | generic_mourn_inferior (); | |
c906108c SS |
7869 | } |
7870 | ||
2d717e4f DJ |
7871 | static void |
7872 | extended_remote_mourn_1 (struct target_ops *target) | |
7873 | { | |
7874 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7875 | |
e24a49d8 PA |
7876 | /* In case we got here due to an error, but we're going to stay |
7877 | connected. */ | |
7878 | rs->waiting_for_stop_reply = 0; | |
7879 | ||
dc1981d7 PA |
7880 | /* If the current general thread belonged to the process we just |
7881 | detached from or has exited, the remote side current general | |
7882 | thread becomes undefined. Considering a case like this: | |
7883 | ||
7884 | - We just got here due to a detach. | |
7885 | - The process that we're detaching from happens to immediately | |
7886 | report a global breakpoint being hit in non-stop mode, in the | |
7887 | same thread we had selected before. | |
7888 | - GDB attaches to this process again. | |
7889 | - This event happens to be the next event we handle. | |
7890 | ||
7891 | GDB would consider that the current general thread didn't need to | |
7892 | be set on the stub side (with Hg), since for all it knew, | |
7893 | GENERAL_THREAD hadn't changed. | |
7894 | ||
7895 | Notice that although in all-stop mode, the remote server always | |
7896 | sets the current thread to the thread reporting the stop event, | |
7897 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7898 | not* change the current thread when reporting a breakpoint hit, | |
7899 | due to the decoupling of event reporting and event handling. | |
7900 | ||
7901 | To keep things simple, we always invalidate our notion of the | |
7902 | current thread. */ | |
47f8a51d | 7903 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 7904 | |
2d717e4f DJ |
7905 | /* Unlike "target remote", we do not want to unpush the target; then |
7906 | the next time the user says "run", we won't be connected. */ | |
7907 | ||
48aa3c27 PA |
7908 | /* Call common code to mark the inferior as not running. */ |
7909 | generic_mourn_inferior (); | |
7910 | ||
d729566a | 7911 | if (!have_inferiors ()) |
2d717e4f | 7912 | { |
82f73884 PA |
7913 | if (!remote_multi_process_p (rs)) |
7914 | { | |
7915 | /* Check whether the target is running now - some remote stubs | |
7916 | automatically restart after kill. */ | |
7917 | putpkt ("?"); | |
7918 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7919 | ||
7920 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7921 | { | |
3e43a32a MS |
7922 | /* Assume that the target has been restarted. Set |
7923 | inferior_ptid so that bits of core GDB realizes | |
7924 | there's something here, e.g., so that the user can | |
7925 | say "kill" again. */ | |
82f73884 PA |
7926 | inferior_ptid = magic_null_ptid; |
7927 | } | |
82f73884 | 7928 | } |
2d717e4f DJ |
7929 | } |
7930 | } | |
c906108c SS |
7931 | |
7932 | static void | |
136d6dae | 7933 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7934 | { |
136d6dae | 7935 | extended_remote_mourn_1 (ops); |
2d717e4f | 7936 | } |
c906108c | 7937 | |
03583c20 UW |
7938 | static int |
7939 | extended_remote_supports_disable_randomization (void) | |
7940 | { | |
7941 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7942 | == PACKET_ENABLE); | |
7943 | } | |
7944 | ||
7945 | static void | |
7946 | extended_remote_disable_randomization (int val) | |
7947 | { | |
7948 | struct remote_state *rs = get_remote_state (); | |
7949 | char *reply; | |
7950 | ||
bba74b36 YQ |
7951 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
7952 | val); | |
03583c20 UW |
7953 | putpkt (rs->buf); |
7954 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7955 | if (*reply == '\0') | |
7956 | error (_("Target does not support QDisableRandomization.")); | |
7957 | if (strcmp (reply, "OK") != 0) | |
7958 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7959 | } | |
7960 | ||
2d717e4f DJ |
7961 | static int |
7962 | extended_remote_run (char *args) | |
7963 | { | |
7964 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7965 | int len; |
c906108c | 7966 | |
2d717e4f DJ |
7967 | /* If the user has disabled vRun support, or we have detected that |
7968 | support is not available, do not try it. */ | |
7969 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7970 | return -1; | |
424163ea | 7971 | |
2d717e4f DJ |
7972 | strcpy (rs->buf, "vRun;"); |
7973 | len = strlen (rs->buf); | |
c906108c | 7974 | |
2d717e4f DJ |
7975 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7976 | error (_("Remote file name too long for run packet")); | |
7977 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7978 | ||
d1a41061 | 7979 | gdb_assert (args != NULL); |
2d717e4f DJ |
7980 | if (*args) |
7981 | { | |
7982 | struct cleanup *back_to; | |
7983 | int i; | |
7984 | char **argv; | |
7985 | ||
d1a41061 | 7986 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7987 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7988 | for (i = 0; argv[i] != NULL; i++) | |
7989 | { | |
7990 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7991 | error (_("Argument list too long for run packet")); | |
7992 | rs->buf[len++] = ';'; | |
7993 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7994 | } | |
7995 | do_cleanups (back_to); | |
7996 | } | |
7997 | ||
7998 | rs->buf[len++] = '\0'; | |
7999 | ||
8000 | putpkt (rs->buf); | |
8001 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8002 | ||
8003 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
8004 | { | |
3405876a | 8005 | /* We have a wait response. All is well. */ |
2d717e4f DJ |
8006 | return 0; |
8007 | } | |
8008 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
8009 | /* It wasn't disabled before, but it is now. */ | |
8010 | return -1; | |
8011 | else | |
8012 | { | |
8013 | if (remote_exec_file[0] == '\0') | |
8014 | error (_("Running the default executable on the remote target failed; " | |
8015 | "try \"set remote exec-file\"?")); | |
8016 | else | |
8017 | error (_("Running \"%s\" on the remote target failed"), | |
8018 | remote_exec_file); | |
8019 | } | |
c906108c SS |
8020 | } |
8021 | ||
2d717e4f DJ |
8022 | /* In the extended protocol we want to be able to do things like |
8023 | "run" and have them basically work as expected. So we need | |
8024 | a special create_inferior function. We support changing the | |
8025 | executable file and the command line arguments, but not the | |
8026 | environment. */ | |
8027 | ||
43ff13b4 | 8028 | static void |
2d717e4f | 8029 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 8030 | char **env, int from_tty) |
43ff13b4 | 8031 | { |
3405876a PA |
8032 | int run_worked; |
8033 | char *stop_reply; | |
8034 | struct remote_state *rs = get_remote_state (); | |
8035 | ||
43ff13b4 | 8036 | /* If running asynchronously, register the target file descriptor |
23860348 | 8037 | with the event loop. */ |
75c99385 | 8038 | if (target_can_async_p ()) |
2acceee2 | 8039 | target_async (inferior_event_handler, 0); |
43ff13b4 | 8040 | |
03583c20 UW |
8041 | /* Disable address space randomization if requested (and supported). */ |
8042 | if (extended_remote_supports_disable_randomization ()) | |
8043 | extended_remote_disable_randomization (disable_randomization); | |
8044 | ||
43ff13b4 | 8045 | /* Now restart the remote server. */ |
3405876a PA |
8046 | run_worked = extended_remote_run (args) != -1; |
8047 | if (!run_worked) | |
2d717e4f DJ |
8048 | { |
8049 | /* vRun was not supported. Fail if we need it to do what the | |
8050 | user requested. */ | |
8051 | if (remote_exec_file[0]) | |
8052 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8053 | if (args[0]) | |
8054 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8055 | |
2d717e4f DJ |
8056 | /* Fall back to "R". */ |
8057 | extended_remote_restart (); | |
8058 | } | |
424163ea | 8059 | |
6c95b8df PA |
8060 | if (!have_inferiors ()) |
8061 | { | |
8062 | /* Clean up from the last time we ran, before we mark the target | |
8063 | running again. This will mark breakpoints uninserted, and | |
8064 | get_offsets may insert breakpoints. */ | |
8065 | init_thread_list (); | |
8066 | init_wait_for_inferior (); | |
8067 | } | |
45280a52 | 8068 | |
3405876a PA |
8069 | /* vRun's success return is a stop reply. */ |
8070 | stop_reply = run_worked ? rs->buf : NULL; | |
8071 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8072 | |
2d717e4f DJ |
8073 | /* Get updated offsets, if the stub uses qOffsets. */ |
8074 | get_offsets (); | |
2d717e4f DJ |
8075 | } |
8076 | ||
8077 | static void | |
136d6dae VP |
8078 | extended_remote_create_inferior (struct target_ops *ops, |
8079 | char *exec_file, char *args, | |
2d717e4f DJ |
8080 | char **env, int from_tty) |
8081 | { | |
75c99385 | 8082 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 8083 | } |
c906108c | 8084 | \f |
c5aa993b | 8085 | |
b775012e LM |
8086 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8087 | the list of conditions (in agent expression bytecode format), if any, the | |
8088 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8089 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8090 | |
8091 | static int | |
8092 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8093 | struct bp_target_info *bp_tgt, char *buf, |
8094 | char *buf_end) | |
b775012e LM |
8095 | { |
8096 | struct agent_expr *aexpr = NULL; | |
8097 | int i, ix; | |
8098 | char *pkt; | |
8099 | char *buf_start = buf; | |
8100 | ||
8101 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8102 | return 0; | |
8103 | ||
8104 | buf += strlen (buf); | |
bba74b36 | 8105 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8106 | buf++; |
8107 | ||
8108 | /* Send conditions to the target and free the vector. */ | |
8109 | for (ix = 0; | |
8110 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8111 | ix++) | |
8112 | { | |
bba74b36 | 8113 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8114 | buf += strlen (buf); |
8115 | for (i = 0; i < aexpr->len; ++i) | |
8116 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8117 | *buf = '\0'; | |
8118 | } | |
8119 | ||
8120 | VEC_free (agent_expr_p, bp_tgt->conditions); | |
8121 | return 0; | |
8122 | } | |
8123 | ||
d3ce09f5 SS |
8124 | static void |
8125 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8126 | struct bp_target_info *bp_tgt, char *buf) | |
8127 | { | |
8128 | struct agent_expr *aexpr = NULL; | |
8129 | int i, ix; | |
8130 | ||
8131 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8132 | return; | |
8133 | ||
8134 | buf += strlen (buf); | |
8135 | ||
8136 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8137 | buf += strlen (buf); | |
8138 | ||
8139 | /* Concatenate all the agent expressions that are commands into the | |
8140 | cmds parameter. */ | |
8141 | for (ix = 0; | |
8142 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8143 | ix++) | |
8144 | { | |
8145 | sprintf (buf, "X%x,", aexpr->len); | |
8146 | buf += strlen (buf); | |
8147 | for (i = 0; i < aexpr->len; ++i) | |
8148 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8149 | *buf = '\0'; | |
8150 | } | |
8151 | ||
8152 | VEC_free (agent_expr_p, bp_tgt->tcommands); | |
8153 | } | |
8154 | ||
8181d85f DJ |
8155 | /* Insert a breakpoint. On targets that have software breakpoint |
8156 | support, we ask the remote target to do the work; on targets | |
8157 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8158 | |
8159 | static int | |
a6d9a66e UW |
8160 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
8161 | struct bp_target_info *bp_tgt) | |
c906108c | 8162 | { |
d471ea57 AC |
8163 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8164 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8165 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8166 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8167 | |
444abaca | 8168 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8169 | { |
7c0f6dcc | 8170 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 | 8171 | struct remote_state *rs; |
bba74b36 | 8172 | char *p, *endbuf; |
7c0f6dcc | 8173 | int bpsize; |
b775012e | 8174 | struct condition_list *cond = NULL; |
4fff2411 | 8175 | |
28439a30 PA |
8176 | /* Make sure the remote is pointing at the right process, if |
8177 | necessary. */ | |
8178 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8179 | set_general_process (); | |
8180 | ||
a1dcb23a | 8181 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8182 | |
8183 | rs = get_remote_state (); | |
8184 | p = rs->buf; | |
bba74b36 | 8185 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8186 | |
96baa820 JM |
8187 | *(p++) = 'Z'; |
8188 | *(p++) = '0'; | |
8189 | *(p++) = ','; | |
7c0f6dcc | 8190 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8191 | p += hexnumstr (p, addr); |
bba74b36 | 8192 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8193 | |
b775012e | 8194 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8195 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8196 | |
d3ce09f5 SS |
8197 | if (remote_can_run_breakpoint_commands ()) |
8198 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8199 | ||
6d820c5c DJ |
8200 | putpkt (rs->buf); |
8201 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8202 | |
6d820c5c | 8203 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8204 | { |
d471ea57 AC |
8205 | case PACKET_ERROR: |
8206 | return -1; | |
8207 | case PACKET_OK: | |
7c0f6dcc JL |
8208 | bp_tgt->placed_address = addr; |
8209 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8210 | return 0; |
8211 | case PACKET_UNKNOWN: | |
8212 | break; | |
96baa820 JM |
8213 | } |
8214 | } | |
c906108c | 8215 | |
a6d9a66e | 8216 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
8217 | } |
8218 | ||
8219 | static int | |
a6d9a66e UW |
8220 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
8221 | struct bp_target_info *bp_tgt) | |
c906108c | 8222 | { |
8181d85f | 8223 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8224 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8225 | |
444abaca | 8226 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8227 | { |
6d820c5c | 8228 | char *p = rs->buf; |
bba74b36 | 8229 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8230 | |
28439a30 PA |
8231 | /* Make sure the remote is pointing at the right process, if |
8232 | necessary. */ | |
8233 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8234 | set_general_process (); | |
8235 | ||
96baa820 JM |
8236 | *(p++) = 'z'; |
8237 | *(p++) = '0'; | |
8238 | *(p++) = ','; | |
8239 | ||
8181d85f DJ |
8240 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8241 | p += hexnumstr (p, addr); | |
bba74b36 | 8242 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8243 | |
6d820c5c DJ |
8244 | putpkt (rs->buf); |
8245 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8246 | |
6d820c5c | 8247 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8248 | } |
8249 | ||
a6d9a66e | 8250 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
8251 | } |
8252 | ||
d471ea57 AC |
8253 | static int |
8254 | watchpoint_to_Z_packet (int type) | |
8255 | { | |
8256 | switch (type) | |
8257 | { | |
8258 | case hw_write: | |
bb858e6a | 8259 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8260 | break; |
8261 | case hw_read: | |
bb858e6a | 8262 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8263 | break; |
8264 | case hw_access: | |
bb858e6a | 8265 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8266 | break; |
8267 | default: | |
8e65ff28 | 8268 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8269 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8270 | } |
8271 | } | |
8272 | ||
3c3bea1c | 8273 | static int |
0cf6dd15 TJB |
8274 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
8275 | struct expression *cond) | |
96baa820 | 8276 | { |
d01949b6 | 8277 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8278 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8279 | char *p; |
d471ea57 | 8280 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8281 | |
444abaca | 8282 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 8283 | return 1; |
802188a7 | 8284 | |
28439a30 PA |
8285 | /* Make sure the remote is pointing at the right process, if |
8286 | necessary. */ | |
8287 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8288 | set_general_process (); | |
8289 | ||
bba74b36 | 8290 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8291 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8292 | addr = remote_address_masked (addr); |
8293 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8294 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8295 | |
6d820c5c DJ |
8296 | putpkt (rs->buf); |
8297 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8298 | |
6d820c5c | 8299 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8300 | { |
8301 | case PACKET_ERROR: | |
d471ea57 | 8302 | return -1; |
85d721b8 PA |
8303 | case PACKET_UNKNOWN: |
8304 | return 1; | |
d471ea57 AC |
8305 | case PACKET_OK: |
8306 | return 0; | |
8307 | } | |
8e65ff28 | 8308 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8309 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8310 | } |
8311 | ||
283002cf MR |
8312 | static int |
8313 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8314 | CORE_ADDR start, int length) | |
8315 | { | |
8316 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8317 | ||
8318 | return diff < length; | |
8319 | } | |
8320 | ||
d471ea57 | 8321 | |
3c3bea1c | 8322 | static int |
0cf6dd15 TJB |
8323 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
8324 | struct expression *cond) | |
96baa820 | 8325 | { |
d01949b6 | 8326 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8327 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8328 | char *p; |
d471ea57 AC |
8329 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8330 | ||
444abaca | 8331 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 8332 | return -1; |
802188a7 | 8333 | |
28439a30 PA |
8334 | /* Make sure the remote is pointing at the right process, if |
8335 | necessary. */ | |
8336 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8337 | set_general_process (); | |
8338 | ||
bba74b36 | 8339 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8340 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8341 | addr = remote_address_masked (addr); |
8342 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8343 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8344 | putpkt (rs->buf); |
8345 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8346 | |
6d820c5c | 8347 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8348 | { |
8349 | case PACKET_ERROR: | |
8350 | case PACKET_UNKNOWN: | |
8351 | return -1; | |
8352 | case PACKET_OK: | |
8353 | return 0; | |
8354 | } | |
8e65ff28 | 8355 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8356 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8357 | } |
8358 | ||
3c3bea1c | 8359 | |
501eef12 | 8360 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8361 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8362 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8363 | |
480a3f21 PW |
8364 | static int |
8365 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
8366 | { | |
8367 | if (remote_hw_watchpoint_length_limit == 0) | |
8368 | return 0; | |
8369 | else if (remote_hw_watchpoint_length_limit < 0) | |
8370 | return 1; | |
8371 | else if (len <= remote_hw_watchpoint_length_limit) | |
8372 | return 1; | |
8373 | else | |
8374 | return 0; | |
8375 | } | |
8376 | ||
b9362cc7 | 8377 | static int |
3c3bea1c | 8378 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 8379 | { |
3c3bea1c GS |
8380 | if (type == bp_hardware_breakpoint) |
8381 | { | |
8382 | if (remote_hw_breakpoint_limit == 0) | |
8383 | return 0; | |
501eef12 AC |
8384 | else if (remote_hw_breakpoint_limit < 0) |
8385 | return 1; | |
3c3bea1c GS |
8386 | else if (cnt <= remote_hw_breakpoint_limit) |
8387 | return 1; | |
8388 | } | |
8389 | else | |
8390 | { | |
8391 | if (remote_hw_watchpoint_limit == 0) | |
8392 | return 0; | |
501eef12 AC |
8393 | else if (remote_hw_watchpoint_limit < 0) |
8394 | return 1; | |
3c3bea1c GS |
8395 | else if (ot) |
8396 | return -1; | |
8397 | else if (cnt <= remote_hw_watchpoint_limit) | |
8398 | return 1; | |
8399 | } | |
8400 | return -1; | |
8401 | } | |
8402 | ||
b9362cc7 | 8403 | static int |
3c3bea1c GS |
8404 | remote_stopped_by_watchpoint (void) |
8405 | { | |
ee154bee TT |
8406 | struct remote_state *rs = get_remote_state (); |
8407 | ||
8408 | return rs->remote_stopped_by_watchpoint_p; | |
3c3bea1c GS |
8409 | } |
8410 | ||
4aa7a7f5 JJ |
8411 | static int |
8412 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8413 | { |
ee154bee | 8414 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8415 | int rc = 0; |
a744cf53 | 8416 | |
d983da9c | 8417 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 | 8418 | { |
ee154bee | 8419 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8420 | rc = 1; |
8421 | } | |
8422 | ||
8423 | return rc; | |
3c3bea1c GS |
8424 | } |
8425 | ||
8426 | ||
8427 | static int | |
a6d9a66e UW |
8428 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
8429 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 8430 | { |
8181d85f | 8431 | CORE_ADDR addr; |
4fff2411 | 8432 | struct remote_state *rs; |
bba74b36 | 8433 | char *p, *endbuf; |
dd61ec5c | 8434 | char *message; |
802188a7 | 8435 | |
c8189ed1 | 8436 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8437 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8438 | |
a1dcb23a | 8439 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8440 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8441 | |
444abaca | 8442 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8443 | return -1; |
2bc416ba | 8444 | |
28439a30 PA |
8445 | /* Make sure the remote is pointing at the right process, if |
8446 | necessary. */ | |
8447 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8448 | set_general_process (); | |
8449 | ||
4fff2411 JZ |
8450 | rs = get_remote_state (); |
8451 | p = rs->buf; | |
bba74b36 | 8452 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8453 | |
96baa820 JM |
8454 | *(p++) = 'Z'; |
8455 | *(p++) = '1'; | |
8456 | *(p++) = ','; | |
802188a7 | 8457 | |
8181d85f | 8458 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8459 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8460 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8461 | |
b775012e | 8462 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8463 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8464 | |
d3ce09f5 SS |
8465 | if (remote_can_run_breakpoint_commands ()) |
8466 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8467 | ||
6d820c5c DJ |
8468 | putpkt (rs->buf); |
8469 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8470 | |
6d820c5c | 8471 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8472 | { |
8473 | case PACKET_ERROR: | |
dd61ec5c MW |
8474 | if (rs->buf[1] == '.') |
8475 | { | |
8476 | message = strchr (rs->buf + 2, '.'); | |
8477 | if (message) | |
0316657e | 8478 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8479 | } |
8480 | return -1; | |
d471ea57 AC |
8481 | case PACKET_UNKNOWN: |
8482 | return -1; | |
8483 | case PACKET_OK: | |
8484 | return 0; | |
8485 | } | |
8e65ff28 | 8486 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8487 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8488 | } |
8489 | ||
d471ea57 | 8490 | |
802188a7 | 8491 | static int |
a6d9a66e UW |
8492 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
8493 | struct bp_target_info *bp_tgt) | |
96baa820 | 8494 | { |
8181d85f | 8495 | CORE_ADDR addr; |
d01949b6 | 8496 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8497 | char *p = rs->buf; |
bba74b36 | 8498 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8499 | |
444abaca | 8500 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8501 | return -1; |
802188a7 | 8502 | |
28439a30 PA |
8503 | /* Make sure the remote is pointing at the right process, if |
8504 | necessary. */ | |
8505 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8506 | set_general_process (); | |
8507 | ||
96baa820 JM |
8508 | *(p++) = 'z'; |
8509 | *(p++) = '1'; | |
8510 | *(p++) = ','; | |
802188a7 | 8511 | |
8181d85f | 8512 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8513 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8514 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8515 | |
6d820c5c DJ |
8516 | putpkt (rs->buf); |
8517 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8518 | |
6d820c5c | 8519 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8520 | { |
8521 | case PACKET_ERROR: | |
8522 | case PACKET_UNKNOWN: | |
8523 | return -1; | |
8524 | case PACKET_OK: | |
8525 | return 0; | |
8526 | } | |
8e65ff28 | 8527 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8528 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8529 | } |
96baa820 | 8530 | |
4a5e7a5b PA |
8531 | /* Verify memory using the "qCRC:" request. */ |
8532 | ||
8533 | static int | |
8534 | remote_verify_memory (struct target_ops *ops, | |
8535 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8536 | { | |
8537 | struct remote_state *rs = get_remote_state (); | |
8538 | unsigned long host_crc, target_crc; | |
8539 | char *tmp; | |
8540 | ||
28439a30 PA |
8541 | /* Make sure the remote is pointing at the right process. */ |
8542 | set_general_process (); | |
8543 | ||
4a5e7a5b PA |
8544 | /* FIXME: assumes lma can fit into long. */ |
8545 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8546 | (long) lma, (long) size); | |
8547 | putpkt (rs->buf); | |
8548 | ||
8549 | /* Be clever; compute the host_crc before waiting for target | |
8550 | reply. */ | |
85ec6ce7 | 8551 | host_crc = xcrc32 (data, size, 0xffffffff); |
4a5e7a5b PA |
8552 | |
8553 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8554 | if (rs->buf[0] == 'E') | |
8555 | return -1; | |
8556 | ||
8557 | if (rs->buf[0] != 'C') | |
8558 | error (_("remote target does not support this operation")); | |
8559 | ||
8560 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8561 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8562 | ||
8563 | return (host_crc == target_crc); | |
8564 | } | |
8565 | ||
c906108c SS |
8566 | /* compare-sections command |
8567 | ||
8568 | With no arguments, compares each loadable section in the exec bfd | |
8569 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8570 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8571 | |
c906108c | 8572 | static void |
fba45db2 | 8573 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8574 | { |
8575 | asection *s; | |
c906108c | 8576 | struct cleanup *old_chain; |
948f8e3d | 8577 | gdb_byte *sectdata; |
ce359b09 | 8578 | const char *sectname; |
c906108c SS |
8579 | bfd_size_type size; |
8580 | bfd_vma lma; | |
8581 | int matched = 0; | |
8582 | int mismatched = 0; | |
4a5e7a5b | 8583 | int res; |
c906108c SS |
8584 | |
8585 | if (!exec_bfd) | |
8a3fe4f8 | 8586 | error (_("command cannot be used without an exec file")); |
c906108c | 8587 | |
28439a30 PA |
8588 | /* Make sure the remote is pointing at the right process. */ |
8589 | set_general_process (); | |
8590 | ||
c5aa993b | 8591 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8592 | { |
8593 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8594 | continue; /* Skip non-loadable section. */ |
c906108c | 8595 | |
2c500098 | 8596 | size = bfd_get_section_size (s); |
c906108c | 8597 | if (size == 0) |
0df8b418 | 8598 | continue; /* Skip zero-length section. */ |
c906108c | 8599 | |
ce359b09 | 8600 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8601 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8602 | continue; /* Not the section selected by user. */ |
c906108c | 8603 | |
0df8b418 | 8604 | matched = 1; /* Do this section. */ |
c906108c | 8605 | lma = s->lma; |
c906108c | 8606 | |
c906108c | 8607 | sectdata = xmalloc (size); |
b8c9b27d | 8608 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8609 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8610 | |
4a5e7a5b PA |
8611 | res = target_verify_memory (sectdata, lma, size); |
8612 | ||
8613 | if (res == -1) | |
5af949e3 | 8614 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
8615 | paddress (target_gdbarch (), lma), |
8616 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 8617 | |
5af949e3 | 8618 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
8619 | paddress (target_gdbarch (), lma), |
8620 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 8621 | if (res) |
c906108c SS |
8622 | printf_filtered ("matched.\n"); |
8623 | else | |
c5aa993b JM |
8624 | { |
8625 | printf_filtered ("MIS-MATCHED!\n"); | |
8626 | mismatched++; | |
8627 | } | |
c906108c SS |
8628 | |
8629 | do_cleanups (old_chain); | |
8630 | } | |
8631 | if (mismatched > 0) | |
8a3fe4f8 AC |
8632 | warning (_("One or more sections of the remote executable does not match\n\ |
8633 | the loaded file\n")); | |
c906108c | 8634 | if (args && !matched) |
a3f17187 | 8635 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8636 | } |
8637 | ||
0e7f50da UW |
8638 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8639 | into remote target. The number of bytes written to the remote | |
8640 | target is returned, or -1 for error. */ | |
8641 | ||
8642 | static LONGEST | |
8643 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8644 | const char *annex, const gdb_byte *writebuf, | |
8645 | ULONGEST offset, LONGEST len, | |
8646 | struct packet_config *packet) | |
8647 | { | |
8648 | int i, buf_len; | |
8649 | ULONGEST n; | |
0e7f50da UW |
8650 | struct remote_state *rs = get_remote_state (); |
8651 | int max_size = get_memory_write_packet_size (); | |
8652 | ||
8653 | if (packet->support == PACKET_DISABLE) | |
8654 | return -1; | |
8655 | ||
8656 | /* Insert header. */ | |
8657 | i = snprintf (rs->buf, max_size, | |
8658 | "qXfer:%s:write:%s:%s:", | |
8659 | object_name, annex ? annex : "", | |
8660 | phex_nz (offset, sizeof offset)); | |
8661 | max_size -= (i + 1); | |
8662 | ||
8663 | /* Escape as much data as fits into rs->buf. */ | |
8664 | buf_len = remote_escape_output | |
bc20a4af | 8665 | (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
8666 | |
8667 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8668 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8669 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8670 | return -1; | |
8671 | ||
8672 | unpack_varlen_hex (rs->buf, &n); | |
8673 | return n; | |
8674 | } | |
8675 | ||
0876f84a DJ |
8676 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8677 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8678 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8679 | The number of bytes read may be less than LEN without indicating an | |
8680 | EOF. PACKET is checked and updated to indicate whether the remote | |
8681 | target supports this object. */ | |
8682 | ||
8683 | static LONGEST | |
8684 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8685 | const char *annex, | |
8686 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8687 | struct packet_config *packet) | |
8688 | { | |
0876f84a | 8689 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
8690 | LONGEST i, n, packet_len; |
8691 | ||
8692 | if (packet->support == PACKET_DISABLE) | |
8693 | return -1; | |
8694 | ||
8695 | /* Check whether we've cached an end-of-object packet that matches | |
8696 | this request. */ | |
8e88304f | 8697 | if (rs->finished_object) |
0876f84a | 8698 | { |
8e88304f TT |
8699 | if (strcmp (object_name, rs->finished_object) == 0 |
8700 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
8701 | && offset == rs->finished_offset) | |
0876f84a DJ |
8702 | return 0; |
8703 | ||
8704 | /* Otherwise, we're now reading something different. Discard | |
8705 | the cache. */ | |
8e88304f TT |
8706 | xfree (rs->finished_object); |
8707 | xfree (rs->finished_annex); | |
8708 | rs->finished_object = NULL; | |
8709 | rs->finished_annex = NULL; | |
0876f84a DJ |
8710 | } |
8711 | ||
8712 | /* Request only enough to fit in a single packet. The actual data | |
8713 | may not, since we don't know how much of it will need to be escaped; | |
8714 | the target is free to respond with slightly less data. We subtract | |
8715 | five to account for the response type and the protocol frame. */ | |
8716 | n = min (get_remote_packet_size () - 5, len); | |
8717 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8718 | object_name, annex ? annex : "", | |
8719 | phex_nz (offset, sizeof offset), | |
8720 | phex_nz (n, sizeof n)); | |
8721 | i = putpkt (rs->buf); | |
8722 | if (i < 0) | |
8723 | return -1; | |
8724 | ||
8725 | rs->buf[0] = '\0'; | |
8726 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8727 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8728 | return -1; | |
8729 | ||
8730 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8731 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8732 | ||
8733 | /* 'm' means there is (or at least might be) more data after this | |
8734 | batch. That does not make sense unless there's at least one byte | |
8735 | of data in this reply. */ | |
8736 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8737 | error (_("Remote qXfer reply contained no data.")); | |
8738 | ||
8739 | /* Got some data. */ | |
bc20a4af PA |
8740 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
8741 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
8742 | |
8743 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8744 | or possibly empty. If we have the final block of a non-empty |
8745 | object, record this fact to bypass a subsequent partial read. */ | |
8746 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 8747 | { |
8e88304f TT |
8748 | rs->finished_object = xstrdup (object_name); |
8749 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
8750 | rs->finished_offset = offset + i; | |
0876f84a DJ |
8751 | } |
8752 | ||
8753 | return i; | |
8754 | } | |
8755 | ||
1e3ff5ad | 8756 | static LONGEST |
4b8a223f | 8757 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8758 | const char *annex, gdb_byte *readbuf, |
8759 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8760 | { |
82f73884 | 8761 | struct remote_state *rs; |
c906108c | 8762 | int i; |
6d820c5c | 8763 | char *p2; |
1e3ff5ad | 8764 | char query_type; |
c906108c | 8765 | |
e6e4e701 | 8766 | set_remote_traceframe (); |
82f73884 PA |
8767 | set_general_thread (inferior_ptid); |
8768 | ||
8769 | rs = get_remote_state (); | |
8770 | ||
b2182ed2 | 8771 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8772 | if (object == TARGET_OBJECT_MEMORY) |
8773 | { | |
00d84524 | 8774 | LONGEST xfered; |
21e3b9b9 | 8775 | |
2d717e4f DJ |
8776 | /* If the remote target is connected but not running, we should |
8777 | pass this request down to a lower stratum (e.g. the executable | |
8778 | file). */ | |
8779 | if (!target_has_execution) | |
8780 | return 0; | |
8781 | ||
21e3b9b9 | 8782 | if (writebuf != NULL) |
b2182ed2 | 8783 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8784 | else |
b2182ed2 | 8785 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 | 8786 | |
00d84524 | 8787 | return xfered; |
21e3b9b9 DJ |
8788 | } |
8789 | ||
0df8b418 | 8790 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8791 | if (object == TARGET_OBJECT_SPU) |
8792 | { | |
8793 | if (readbuf) | |
8794 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8795 | &remote_protocol_packets | |
8796 | [PACKET_qXfer_spu_read]); | |
8797 | else | |
8798 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8799 | &remote_protocol_packets | |
8800 | [PACKET_qXfer_spu_write]); | |
8801 | } | |
8802 | ||
4aa995e1 PA |
8803 | /* Handle extra signal info using qxfer packets. */ |
8804 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8805 | { | |
8806 | if (readbuf) | |
8807 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8808 | &remote_protocol_packets | |
8809 | [PACKET_qXfer_siginfo_read]); | |
8810 | else | |
3e43a32a MS |
8811 | return remote_write_qxfer (ops, "siginfo", annex, |
8812 | writebuf, offset, len, | |
4aa995e1 PA |
8813 | &remote_protocol_packets |
8814 | [PACKET_qXfer_siginfo_write]); | |
8815 | } | |
8816 | ||
0fb4aa4b PA |
8817 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8818 | { | |
8819 | if (readbuf) | |
3e43a32a MS |
8820 | return remote_read_qxfer (ops, "statictrace", annex, |
8821 | readbuf, offset, len, | |
0fb4aa4b PA |
8822 | &remote_protocol_packets |
8823 | [PACKET_qXfer_statictrace_read]); | |
8824 | else | |
8825 | return -1; | |
8826 | } | |
8827 | ||
a76d924d DJ |
8828 | /* Only handle flash writes. */ |
8829 | if (writebuf != NULL) | |
8830 | { | |
8831 | LONGEST xfered; | |
8832 | ||
8833 | switch (object) | |
8834 | { | |
8835 | case TARGET_OBJECT_FLASH: | |
00d84524 | 8836 | return remote_flash_write (ops, offset, len, writebuf); |
a76d924d DJ |
8837 | |
8838 | default: | |
8839 | return -1; | |
8840 | } | |
8841 | } | |
4b8a223f | 8842 | |
1e3ff5ad AC |
8843 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8844 | objects!!! Instead specify new query packets. */ | |
8845 | switch (object) | |
c906108c | 8846 | { |
1e3ff5ad AC |
8847 | case TARGET_OBJECT_AVR: |
8848 | query_type = 'R'; | |
8849 | break; | |
802188a7 RM |
8850 | |
8851 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8852 | gdb_assert (annex == NULL); |
8853 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8854 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8855 | |
23181151 DJ |
8856 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8857 | return remote_read_qxfer | |
8858 | (ops, "features", annex, readbuf, offset, len, | |
8859 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8860 | ||
cfa9d6d9 DJ |
8861 | case TARGET_OBJECT_LIBRARIES: |
8862 | return remote_read_qxfer | |
8863 | (ops, "libraries", annex, readbuf, offset, len, | |
8864 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8865 | ||
2268b414 JK |
8866 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8867 | return remote_read_qxfer | |
8868 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8869 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8870 | ||
fd79ecee DJ |
8871 | case TARGET_OBJECT_MEMORY_MAP: |
8872 | gdb_assert (annex == NULL); | |
8873 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8874 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8875 | ||
07e059b5 VP |
8876 | case TARGET_OBJECT_OSDATA: |
8877 | /* Should only get here if we're connected. */ | |
5d93a237 | 8878 | gdb_assert (rs->remote_desc); |
07e059b5 VP |
8879 | return remote_read_qxfer |
8880 | (ops, "osdata", annex, readbuf, offset, len, | |
8881 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8882 | ||
dc146f7c VP |
8883 | case TARGET_OBJECT_THREADS: |
8884 | gdb_assert (annex == NULL); | |
8885 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8886 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8887 | ||
b3b9301e PA |
8888 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8889 | gdb_assert (annex == NULL); | |
8890 | return remote_read_qxfer | |
8891 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8892 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8893 | |
8894 | case TARGET_OBJECT_FDPIC: | |
8895 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8896 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
169081d0 TG |
8897 | |
8898 | case TARGET_OBJECT_OPENVMS_UIB: | |
8899 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
8900 | &remote_protocol_packets[PACKET_qXfer_uib]); | |
8901 | ||
9accd112 MM |
8902 | case TARGET_OBJECT_BTRACE: |
8903 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
8904 | &remote_protocol_packets[PACKET_qXfer_btrace]); | |
8905 | ||
1e3ff5ad | 8906 | default: |
c906108c SS |
8907 | return -1; |
8908 | } | |
8909 | ||
4b8a223f | 8910 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8911 | buffer size. */ |
4b8a223f | 8912 | if (offset == 0 && len == 0) |
ea9c271d | 8913 | return (get_remote_packet_size ()); |
0df8b418 | 8914 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8915 | large enough let the caller deal with it. */ |
ea9c271d | 8916 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8917 | return -1; |
ea9c271d | 8918 | len = get_remote_packet_size (); |
1e3ff5ad | 8919 | |
23860348 | 8920 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 8921 | if (!rs->remote_desc) |
8a3fe4f8 | 8922 | error (_("remote query is only available after target open")); |
c906108c | 8923 | |
1e3ff5ad | 8924 | gdb_assert (annex != NULL); |
4b8a223f | 8925 | gdb_assert (readbuf != NULL); |
c906108c | 8926 | |
6d820c5c | 8927 | p2 = rs->buf; |
c906108c SS |
8928 | *p2++ = 'q'; |
8929 | *p2++ = query_type; | |
8930 | ||
23860348 MS |
8931 | /* We used one buffer char for the remote protocol q command and |
8932 | another for the query type. As the remote protocol encapsulation | |
8933 | uses 4 chars plus one extra in case we are debugging | |
8934 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8935 | string. */ | |
c906108c | 8936 | i = 0; |
ea9c271d | 8937 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8938 | { |
1e3ff5ad AC |
8939 | /* Bad caller may have sent forbidden characters. */ |
8940 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8941 | *p2++ = annex[i]; | |
c906108c SS |
8942 | i++; |
8943 | } | |
1e3ff5ad AC |
8944 | *p2 = '\0'; |
8945 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8946 | |
6d820c5c | 8947 | i = putpkt (rs->buf); |
c5aa993b JM |
8948 | if (i < 0) |
8949 | return i; | |
c906108c | 8950 | |
6d820c5c DJ |
8951 | getpkt (&rs->buf, &rs->buf_size, 0); |
8952 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8953 | |
cfd77fa1 | 8954 | return strlen ((char *) readbuf); |
c906108c SS |
8955 | } |
8956 | ||
08388c79 DE |
8957 | static int |
8958 | remote_search_memory (struct target_ops* ops, | |
8959 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8960 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8961 | CORE_ADDR *found_addrp) | |
8962 | { | |
f5656ead | 8963 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
8964 | struct remote_state *rs = get_remote_state (); |
8965 | int max_size = get_memory_write_packet_size (); | |
8966 | struct packet_config *packet = | |
8967 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8968 | /* Number of packet bytes used to encode the pattern; |
8969 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8970 | int escaped_pattern_len; |
0df8b418 | 8971 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8972 | int used_pattern_len; |
8973 | int i; | |
8974 | int found; | |
8975 | ULONGEST found_addr; | |
8976 | ||
8977 | /* Don't go to the target if we don't have to. | |
8978 | This is done before checking packet->support to avoid the possibility that | |
8979 | a success for this edge case means the facility works in general. */ | |
8980 | if (pattern_len > search_space_len) | |
8981 | return 0; | |
8982 | if (pattern_len == 0) | |
8983 | { | |
8984 | *found_addrp = start_addr; | |
8985 | return 1; | |
8986 | } | |
8987 | ||
8988 | /* If we already know the packet isn't supported, fall back to the simple | |
8989 | way of searching memory. */ | |
8990 | ||
8991 | if (packet->support == PACKET_DISABLE) | |
8992 | { | |
8993 | /* Target doesn't provided special support, fall back and use the | |
8994 | standard support (copy memory and do the search here). */ | |
8995 | return simple_search_memory (ops, start_addr, search_space_len, | |
8996 | pattern, pattern_len, found_addrp); | |
8997 | } | |
8998 | ||
28439a30 PA |
8999 | /* Make sure the remote is pointing at the right process. */ |
9000 | set_general_process (); | |
9001 | ||
08388c79 DE |
9002 | /* Insert header. */ |
9003 | i = snprintf (rs->buf, max_size, | |
9004 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9005 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9006 | phex_nz (search_space_len, sizeof (search_space_len))); |
9007 | max_size -= (i + 1); | |
9008 | ||
9009 | /* Escape as much data as fits into rs->buf. */ | |
9010 | escaped_pattern_len = | |
bc20a4af | 9011 | remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9012 | &used_pattern_len, max_size); |
9013 | ||
9014 | /* Bail if the pattern is too large. */ | |
9015 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9016 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9017 | |
9018 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9019 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9020 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9021 | { | |
9022 | /* The request may not have worked because the command is not | |
9023 | supported. If so, fall back to the simple way. */ | |
9024 | if (packet->support == PACKET_DISABLE) | |
9025 | { | |
9026 | return simple_search_memory (ops, start_addr, search_space_len, | |
9027 | pattern, pattern_len, found_addrp); | |
9028 | } | |
9029 | return -1; | |
9030 | } | |
9031 | ||
9032 | if (rs->buf[0] == '0') | |
9033 | found = 0; | |
9034 | else if (rs->buf[0] == '1') | |
9035 | { | |
9036 | found = 1; | |
9037 | if (rs->buf[1] != ',') | |
10e0fa18 | 9038 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9039 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9040 | *found_addrp = found_addr; | |
9041 | } | |
9042 | else | |
10e0fa18 | 9043 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9044 | |
9045 | return found; | |
9046 | } | |
9047 | ||
96baa820 JM |
9048 | static void |
9049 | remote_rcmd (char *command, | |
d9fcf2fb | 9050 | struct ui_file *outbuf) |
96baa820 | 9051 | { |
d01949b6 | 9052 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9053 | char *p = rs->buf; |
96baa820 | 9054 | |
5d93a237 | 9055 | if (!rs->remote_desc) |
8a3fe4f8 | 9056 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9057 | |
23860348 | 9058 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9059 | if (command == NULL) |
9060 | command = ""; | |
9061 | ||
23860348 | 9062 | /* The query prefix. */ |
2e9f7625 DJ |
9063 | strcpy (rs->buf, "qRcmd,"); |
9064 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9065 | |
3e43a32a MS |
9066 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9067 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9068 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9069 | |
23860348 | 9070 | /* Encode the actual command. */ |
cfd77fa1 | 9071 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 9072 | |
6d820c5c | 9073 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9074 | error (_("Communication problem with target.")); |
96baa820 JM |
9075 | |
9076 | /* get/display the response */ | |
9077 | while (1) | |
9078 | { | |
2e9f7625 DJ |
9079 | char *buf; |
9080 | ||
00bf0b85 | 9081 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9082 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9083 | rs->buf[0] = '\0'; |
5b37825d PW |
9084 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9085 | { | |
9086 | /* Timeout. Continue to (try to) read responses. | |
9087 | This is better than stopping with an error, assuming the stub | |
9088 | is still executing the (long) monitor command. | |
9089 | If needed, the user can interrupt gdb using C-c, obtaining | |
9090 | an effect similar to stop on timeout. */ | |
9091 | continue; | |
9092 | } | |
2e9f7625 | 9093 | buf = rs->buf; |
96baa820 | 9094 | if (buf[0] == '\0') |
8a3fe4f8 | 9095 | error (_("Target does not support this command.")); |
96baa820 JM |
9096 | if (buf[0] == 'O' && buf[1] != 'K') |
9097 | { | |
23860348 | 9098 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9099 | continue; |
9100 | } | |
9101 | if (strcmp (buf, "OK") == 0) | |
9102 | break; | |
7be570e7 JM |
9103 | if (strlen (buf) == 3 && buf[0] == 'E' |
9104 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9105 | { | |
8a3fe4f8 | 9106 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9107 | } |
96baa820 JM |
9108 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9109 | { | |
9110 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9111 | |
96baa820 JM |
9112 | fputc_unfiltered (c, outbuf); |
9113 | } | |
9114 | break; | |
9115 | } | |
9116 | } | |
9117 | ||
fd79ecee DJ |
9118 | static VEC(mem_region_s) * |
9119 | remote_memory_map (struct target_ops *ops) | |
9120 | { | |
9121 | VEC(mem_region_s) *result = NULL; | |
9122 | char *text = target_read_stralloc (¤t_target, | |
9123 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9124 | ||
9125 | if (text) | |
9126 | { | |
9127 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9128 | |
fd79ecee DJ |
9129 | result = parse_memory_map (text); |
9130 | do_cleanups (back_to); | |
9131 | } | |
9132 | ||
9133 | return result; | |
9134 | } | |
9135 | ||
c906108c | 9136 | static void |
fba45db2 | 9137 | packet_command (char *args, int from_tty) |
c906108c | 9138 | { |
d01949b6 | 9139 | struct remote_state *rs = get_remote_state (); |
c906108c | 9140 | |
5d93a237 | 9141 | if (!rs->remote_desc) |
8a3fe4f8 | 9142 | error (_("command can only be used with remote target")); |
c906108c | 9143 | |
c5aa993b | 9144 | if (!args) |
8a3fe4f8 | 9145 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9146 | |
9147 | puts_filtered ("sending: "); | |
9148 | print_packet (args); | |
9149 | puts_filtered ("\n"); | |
9150 | putpkt (args); | |
9151 | ||
6d820c5c | 9152 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9153 | puts_filtered ("received: "); |
6d820c5c | 9154 | print_packet (rs->buf); |
c906108c SS |
9155 | puts_filtered ("\n"); |
9156 | } | |
9157 | ||
9158 | #if 0 | |
23860348 | 9159 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9160 | |
a14ed312 | 9161 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9162 | |
a14ed312 | 9163 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9164 | |
a14ed312 | 9165 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9166 | |
a14ed312 | 9167 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9168 | |
23860348 | 9169 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9170 | |
a14ed312 | 9171 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9172 | |
23860348 | 9173 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9174 | |
a14ed312 | 9175 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9176 | |
a14ed312 | 9177 | static void init_remote_threadtests (void); |
c906108c | 9178 | |
23860348 | 9179 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9180 | |
9181 | static void | |
fba45db2 | 9182 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9183 | { |
9184 | int sample_thread = SAMPLE_THREAD; | |
9185 | ||
a3f17187 | 9186 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9187 | set_general_thread (sample_thread); |
c906108c SS |
9188 | } |
9189 | ||
9190 | ||
9191 | static void | |
fba45db2 | 9192 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9193 | { |
9194 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
9195 | int pid = ptid_get_pid (inferior_ptid); |
9196 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 9197 | |
79d7f229 | 9198 | if (remote_thread_alive (ptid)) |
c906108c SS |
9199 | printf_filtered ("PASS: Thread alive test\n"); |
9200 | else | |
9201 | printf_filtered ("FAIL: Thread alive test\n"); | |
9202 | } | |
9203 | ||
23860348 | 9204 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9205 | |
9206 | void | |
fba45db2 | 9207 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9208 | { |
9209 | char hexid[20]; | |
9210 | ||
23860348 | 9211 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9212 | hexid[16] = 0; |
9213 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9214 | } | |
9215 | ||
9216 | static void | |
fba45db2 | 9217 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9218 | { |
9219 | int startflag = 1; | |
9220 | threadref nextthread; | |
9221 | int done, result_count; | |
9222 | threadref threadlist[3]; | |
9223 | ||
9224 | printf_filtered ("Remote Threadlist test\n"); | |
9225 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9226 | &result_count, &threadlist[0])) | |
9227 | printf_filtered ("FAIL: threadlist test\n"); | |
9228 | else | |
9229 | { | |
9230 | threadref *scan = threadlist; | |
9231 | threadref *limit = scan + result_count; | |
9232 | ||
9233 | while (scan < limit) | |
9234 | output_threadid (" thread ", scan++); | |
9235 | } | |
9236 | } | |
9237 | ||
9238 | void | |
fba45db2 | 9239 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9240 | { |
9241 | output_threadid ("Threadid: ", &info->threadid); | |
9242 | printf_filtered ("Name: %s\n ", info->shortname); | |
9243 | printf_filtered ("State: %s\n", info->display); | |
9244 | printf_filtered ("other: %s\n\n", info->more_display); | |
9245 | } | |
9246 | ||
9247 | int | |
fba45db2 | 9248 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9249 | { |
9250 | int result; | |
9251 | int set; | |
9252 | struct gdb_ext_thread_info threadinfo; | |
9253 | ||
9254 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9255 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9256 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9257 | display_thread_info (&threadinfo); | |
9258 | return result; | |
9259 | } | |
9260 | ||
9261 | static void | |
fba45db2 | 9262 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9263 | { |
9264 | int athread = SAMPLE_THREAD; | |
9265 | threadref thread; | |
9266 | int set; | |
9267 | ||
9268 | int_to_threadref (&thread, athread); | |
9269 | printf_filtered ("Remote Threadinfo test\n"); | |
9270 | if (!get_and_display_threadinfo (&thread)) | |
9271 | printf_filtered ("FAIL cannot get thread info\n"); | |
9272 | } | |
9273 | ||
9274 | static int | |
fba45db2 | 9275 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9276 | { |
9277 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9278 | return get_and_display_threadinfo (ref); | |
9279 | } | |
9280 | ||
9281 | static void | |
fba45db2 | 9282 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9283 | { |
9284 | printf_filtered ("Remote Threadlist update test\n"); | |
9285 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9286 | } | |
9287 | ||
9288 | static void | |
9289 | init_remote_threadtests (void) | |
9290 | { | |
3e43a32a MS |
9291 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9292 | _("Fetch and print the remote list of " | |
9293 | "thread identifiers, one pkt only")); | |
c906108c | 9294 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9295 | _("Fetch and display info about one thread")); |
c906108c | 9296 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9297 | _("Test setting to a different thread")); |
c906108c | 9298 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9299 | _("Iterate through updating all remote thread info")); |
c906108c | 9300 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9301 | _(" Remote thread alive test ")); |
c906108c SS |
9302 | } |
9303 | ||
9304 | #endif /* 0 */ | |
9305 | ||
f3fb8c85 MS |
9306 | /* Convert a thread ID to a string. Returns the string in a static |
9307 | buffer. */ | |
9308 | ||
9309 | static char * | |
117de6a9 | 9310 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9311 | { |
79d7f229 | 9312 | static char buf[64]; |
82f73884 | 9313 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9314 | |
7cee1e54 PA |
9315 | if (ptid_equal (ptid, null_ptid)) |
9316 | return normal_pid_to_str (ptid); | |
9317 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9318 | { |
9319 | /* Printing an inferior target id. */ | |
9320 | ||
9321 | /* When multi-process extensions are off, there's no way in the | |
9322 | remote protocol to know the remote process id, if there's any | |
9323 | at all. There's one exception --- when we're connected with | |
9324 | target extended-remote, and we manually attached to a process | |
9325 | with "attach PID". We don't record anywhere a flag that | |
9326 | allows us to distinguish that case from the case of | |
9327 | connecting with extended-remote and the stub already being | |
9328 | attached to a process, and reporting yes to qAttached, hence | |
9329 | no smart special casing here. */ | |
9330 | if (!remote_multi_process_p (rs)) | |
9331 | { | |
9332 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9333 | return buf; | |
9334 | } | |
9335 | ||
9336 | return normal_pid_to_str (ptid); | |
82f73884 | 9337 | } |
ecd0ada5 | 9338 | else |
79d7f229 | 9339 | { |
ecd0ada5 PA |
9340 | if (ptid_equal (magic_null_ptid, ptid)) |
9341 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9342 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
9343 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
9344 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
9345 | else | |
9346 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
9347 | ptid_get_tid (ptid)); | |
79d7f229 PA |
9348 | return buf; |
9349 | } | |
f3fb8c85 MS |
9350 | } |
9351 | ||
38691318 KB |
9352 | /* Get the address of the thread local variable in OBJFILE which is |
9353 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9354 | ||
9355 | static CORE_ADDR | |
117de6a9 PA |
9356 | remote_get_thread_local_address (struct target_ops *ops, |
9357 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9358 | { |
444abaca | 9359 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
9360 | { |
9361 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9362 | char *p = rs->buf; |
82f73884 | 9363 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9364 | enum packet_result result; |
38691318 KB |
9365 | |
9366 | strcpy (p, "qGetTLSAddr:"); | |
9367 | p += strlen (p); | |
82f73884 | 9368 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9369 | *p++ = ','; |
9370 | p += hexnumstr (p, offset); | |
9371 | *p++ = ','; | |
9372 | p += hexnumstr (p, lm); | |
9373 | *p++ = '\0'; | |
9374 | ||
6d820c5c DJ |
9375 | putpkt (rs->buf); |
9376 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9377 | result = packet_ok (rs->buf, |
9378 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9379 | if (result == PACKET_OK) |
38691318 KB |
9380 | { |
9381 | ULONGEST result; | |
9382 | ||
6d820c5c | 9383 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9384 | return result; |
9385 | } | |
571dd617 | 9386 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9387 | throw_error (TLS_GENERIC_ERROR, |
9388 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9389 | else |
109c3e39 AC |
9390 | throw_error (TLS_GENERIC_ERROR, |
9391 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9392 | } |
9393 | else | |
109c3e39 AC |
9394 | throw_error (TLS_GENERIC_ERROR, |
9395 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9396 | /* Not reached. */ |
9397 | return 0; | |
9398 | } | |
9399 | ||
711e434b PM |
9400 | /* Provide thread local base, i.e. Thread Information Block address. |
9401 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9402 | ||
70221824 | 9403 | static int |
711e434b PM |
9404 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
9405 | { | |
9406 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
9407 | { | |
9408 | struct remote_state *rs = get_remote_state (); | |
9409 | char *p = rs->buf; | |
9410 | char *endp = rs->buf + get_remote_packet_size (); | |
9411 | enum packet_result result; | |
9412 | ||
9413 | strcpy (p, "qGetTIBAddr:"); | |
9414 | p += strlen (p); | |
9415 | p = write_ptid (p, endp, ptid); | |
9416 | *p++ = '\0'; | |
9417 | ||
9418 | putpkt (rs->buf); | |
9419 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9420 | result = packet_ok (rs->buf, | |
9421 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9422 | if (result == PACKET_OK) | |
9423 | { | |
9424 | ULONGEST result; | |
9425 | ||
9426 | unpack_varlen_hex (rs->buf, &result); | |
9427 | if (addr) | |
9428 | *addr = (CORE_ADDR) result; | |
9429 | return 1; | |
9430 | } | |
9431 | else if (result == PACKET_UNKNOWN) | |
9432 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9433 | else | |
9434 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9435 | } | |
9436 | else | |
9437 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9438 | /* Not reached. */ | |
9439 | return 0; | |
9440 | } | |
9441 | ||
29709017 DJ |
9442 | /* Support for inferring a target description based on the current |
9443 | architecture and the size of a 'g' packet. While the 'g' packet | |
9444 | can have any size (since optional registers can be left off the | |
9445 | end), some sizes are easily recognizable given knowledge of the | |
9446 | approximate architecture. */ | |
9447 | ||
9448 | struct remote_g_packet_guess | |
9449 | { | |
9450 | int bytes; | |
9451 | const struct target_desc *tdesc; | |
9452 | }; | |
9453 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9454 | DEF_VEC_O(remote_g_packet_guess_s); | |
9455 | ||
9456 | struct remote_g_packet_data | |
9457 | { | |
9458 | VEC(remote_g_packet_guess_s) *guesses; | |
9459 | }; | |
9460 | ||
9461 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9462 | ||
9463 | static void * | |
9464 | remote_g_packet_data_init (struct obstack *obstack) | |
9465 | { | |
9466 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9467 | } | |
9468 | ||
9469 | void | |
9470 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9471 | const struct target_desc *tdesc) | |
9472 | { | |
9473 | struct remote_g_packet_data *data | |
9474 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9475 | struct remote_g_packet_guess new_guess, *guess; | |
9476 | int ix; | |
9477 | ||
9478 | gdb_assert (tdesc != NULL); | |
9479 | ||
9480 | for (ix = 0; | |
9481 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9482 | ix++) | |
9483 | if (guess->bytes == bytes) | |
9484 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9485 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9486 | bytes); |
9487 | ||
9488 | new_guess.bytes = bytes; | |
9489 | new_guess.tdesc = tdesc; | |
9490 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9491 | } | |
9492 | ||
d962ef82 DJ |
9493 | /* Return 1 if remote_read_description would do anything on this target |
9494 | and architecture, 0 otherwise. */ | |
9495 | ||
9496 | static int | |
9497 | remote_read_description_p (struct target_ops *target) | |
9498 | { | |
9499 | struct remote_g_packet_data *data | |
f5656ead | 9500 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
9501 | |
9502 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9503 | return 1; | |
9504 | ||
9505 | return 0; | |
9506 | } | |
9507 | ||
29709017 DJ |
9508 | static const struct target_desc * |
9509 | remote_read_description (struct target_ops *target) | |
9510 | { | |
9511 | struct remote_g_packet_data *data | |
f5656ead | 9512 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 9513 | |
d962ef82 DJ |
9514 | /* Do not try this during initial connection, when we do not know |
9515 | whether there is a running but stopped thread. */ | |
9516 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9517 | return NULL; | |
9518 | ||
29709017 DJ |
9519 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9520 | { | |
9521 | struct remote_g_packet_guess *guess; | |
9522 | int ix; | |
9523 | int bytes = send_g_packet (); | |
9524 | ||
9525 | for (ix = 0; | |
9526 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9527 | ix++) | |
9528 | if (guess->bytes == bytes) | |
9529 | return guess->tdesc; | |
9530 | ||
9531 | /* We discard the g packet. A minor optimization would be to | |
9532 | hold on to it, and fill the register cache once we have selected | |
9533 | an architecture, but it's too tricky to do safely. */ | |
9534 | } | |
9535 | ||
9536 | return NULL; | |
9537 | } | |
9538 | ||
a6b151f1 DJ |
9539 | /* Remote file transfer support. This is host-initiated I/O, not |
9540 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9541 | ||
9542 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9543 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9544 | decrease *LEFT. Otherwise raise an error. */ | |
9545 | ||
9546 | static void | |
9547 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9548 | { | |
9549 | int len = strlen (string); | |
9550 | ||
9551 | if (len > *left) | |
9552 | error (_("Packet too long for target.")); | |
9553 | ||
9554 | memcpy (*buffer, string, len); | |
9555 | *buffer += len; | |
9556 | *left -= len; | |
9557 | ||
9558 | /* NUL-terminate the buffer as a convenience, if there is | |
9559 | room. */ | |
9560 | if (*left) | |
9561 | **buffer = '\0'; | |
9562 | } | |
9563 | ||
9564 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9565 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9566 | decrease *LEFT. Otherwise raise an error. */ | |
9567 | ||
9568 | static void | |
9569 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9570 | int len) | |
9571 | { | |
9572 | if (2 * len > *left) | |
9573 | error (_("Packet too long for target.")); | |
9574 | ||
9575 | bin2hex (bytes, *buffer, len); | |
9576 | *buffer += 2 * len; | |
9577 | *left -= 2 * len; | |
9578 | ||
9579 | /* NUL-terminate the buffer as a convenience, if there is | |
9580 | room. */ | |
9581 | if (*left) | |
9582 | **buffer = '\0'; | |
9583 | } | |
9584 | ||
9585 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9586 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9587 | decrease *LEFT. Otherwise raise an error. */ | |
9588 | ||
9589 | static void | |
9590 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9591 | { | |
9592 | int len = hexnumlen (value); | |
9593 | ||
9594 | if (len > *left) | |
9595 | error (_("Packet too long for target.")); | |
9596 | ||
9597 | hexnumstr (*buffer, value); | |
9598 | *buffer += len; | |
9599 | *left -= len; | |
9600 | ||
9601 | /* NUL-terminate the buffer as a convenience, if there is | |
9602 | room. */ | |
9603 | if (*left) | |
9604 | **buffer = '\0'; | |
9605 | } | |
9606 | ||
9607 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9608 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9609 | was included, and *ATTACHMENT to point to the start of the annex | |
9610 | if any. The length of the packet isn't needed here; there may | |
9611 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9612 | ||
9613 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9614 | -1 is returned, the other variables may not be initialized. */ | |
9615 | ||
9616 | static int | |
9617 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9618 | int *remote_errno, char **attachment) | |
9619 | { | |
9620 | char *p, *p2; | |
9621 | ||
9622 | *remote_errno = 0; | |
9623 | *attachment = NULL; | |
9624 | ||
9625 | if (buffer[0] != 'F') | |
9626 | return -1; | |
9627 | ||
9628 | errno = 0; | |
9629 | *retcode = strtol (&buffer[1], &p, 16); | |
9630 | if (errno != 0 || p == &buffer[1]) | |
9631 | return -1; | |
9632 | ||
9633 | /* Check for ",errno". */ | |
9634 | if (*p == ',') | |
9635 | { | |
9636 | errno = 0; | |
9637 | *remote_errno = strtol (p + 1, &p2, 16); | |
9638 | if (errno != 0 || p + 1 == p2) | |
9639 | return -1; | |
9640 | p = p2; | |
9641 | } | |
9642 | ||
9643 | /* Check for ";attachment". If there is no attachment, the | |
9644 | packet should end here. */ | |
9645 | if (*p == ';') | |
9646 | { | |
9647 | *attachment = p + 1; | |
9648 | return 0; | |
9649 | } | |
9650 | else if (*p == '\0') | |
9651 | return 0; | |
9652 | else | |
9653 | return -1; | |
9654 | } | |
9655 | ||
9656 | /* Send a prepared I/O packet to the target and read its response. | |
9657 | The prepared packet is in the global RS->BUF before this function | |
9658 | is called, and the answer is there when we return. | |
9659 | ||
9660 | COMMAND_BYTES is the length of the request to send, which may include | |
9661 | binary data. WHICH_PACKET is the packet configuration to check | |
9662 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9663 | is set to the error number and -1 is returned. Otherwise the value | |
9664 | returned by the function is returned. | |
9665 | ||
9666 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9667 | attachment is expected; an error will be reported if there's a | |
9668 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9669 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9670 | attachment's length. */ | |
9671 | ||
9672 | static int | |
9673 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9674 | int *remote_errno, char **attachment, | |
9675 | int *attachment_len) | |
9676 | { | |
9677 | struct remote_state *rs = get_remote_state (); | |
9678 | int ret, bytes_read; | |
9679 | char *attachment_tmp; | |
9680 | ||
5d93a237 | 9681 | if (!rs->remote_desc |
f1838a98 | 9682 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) |
a6b151f1 DJ |
9683 | { |
9684 | *remote_errno = FILEIO_ENOSYS; | |
9685 | return -1; | |
9686 | } | |
9687 | ||
9688 | putpkt_binary (rs->buf, command_bytes); | |
9689 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9690 | ||
9691 | /* If it timed out, something is wrong. Don't try to parse the | |
9692 | buffer. */ | |
9693 | if (bytes_read < 0) | |
9694 | { | |
9695 | *remote_errno = FILEIO_EINVAL; | |
9696 | return -1; | |
9697 | } | |
9698 | ||
9699 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9700 | { | |
9701 | case PACKET_ERROR: | |
9702 | *remote_errno = FILEIO_EINVAL; | |
9703 | return -1; | |
9704 | case PACKET_UNKNOWN: | |
9705 | *remote_errno = FILEIO_ENOSYS; | |
9706 | return -1; | |
9707 | case PACKET_OK: | |
9708 | break; | |
9709 | } | |
9710 | ||
9711 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9712 | &attachment_tmp)) | |
9713 | { | |
9714 | *remote_errno = FILEIO_EINVAL; | |
9715 | return -1; | |
9716 | } | |
9717 | ||
9718 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9719 | if ((attachment_tmp == NULL && attachment != NULL) | |
9720 | || (attachment_tmp != NULL && attachment == NULL)) | |
9721 | { | |
9722 | *remote_errno = FILEIO_EINVAL; | |
9723 | return -1; | |
9724 | } | |
9725 | ||
9726 | /* If an attachment was found, it must point into the packet buffer; | |
9727 | work out how many bytes there were. */ | |
9728 | if (attachment_tmp != NULL) | |
9729 | { | |
9730 | *attachment = attachment_tmp; | |
9731 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9732 | } | |
9733 | ||
9734 | return ret; | |
9735 | } | |
9736 | ||
9737 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9738 | remote file descriptor, or -1 if an error occurs (and set | |
9739 | *REMOTE_ERRNO). */ | |
9740 | ||
9741 | static int | |
9742 | remote_hostio_open (const char *filename, int flags, int mode, | |
9743 | int *remote_errno) | |
9744 | { | |
9745 | struct remote_state *rs = get_remote_state (); | |
9746 | char *p = rs->buf; | |
9747 | int left = get_remote_packet_size () - 1; | |
9748 | ||
9749 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9750 | ||
9751 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9752 | strlen (filename)); | |
9753 | remote_buffer_add_string (&p, &left, ","); | |
9754 | ||
9755 | remote_buffer_add_int (&p, &left, flags); | |
9756 | remote_buffer_add_string (&p, &left, ","); | |
9757 | ||
9758 | remote_buffer_add_int (&p, &left, mode); | |
9759 | ||
9760 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9761 | remote_errno, NULL, NULL); | |
9762 | } | |
9763 | ||
9764 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9765 | Return the number of bytes written, or -1 if an error occurs (and | |
9766 | set *REMOTE_ERRNO). */ | |
9767 | ||
9768 | static int | |
9769 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9770 | ULONGEST offset, int *remote_errno) | |
9771 | { | |
9772 | struct remote_state *rs = get_remote_state (); | |
9773 | char *p = rs->buf; | |
9774 | int left = get_remote_packet_size (); | |
9775 | int out_len; | |
9776 | ||
9777 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9778 | ||
9779 | remote_buffer_add_int (&p, &left, fd); | |
9780 | remote_buffer_add_string (&p, &left, ","); | |
9781 | ||
9782 | remote_buffer_add_int (&p, &left, offset); | |
9783 | remote_buffer_add_string (&p, &left, ","); | |
9784 | ||
bc20a4af | 9785 | p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
9786 | get_remote_packet_size () - (p - rs->buf)); |
9787 | ||
9788 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9789 | remote_errno, NULL, NULL); | |
9790 | } | |
9791 | ||
9792 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9793 | Return the number of bytes read, or -1 if an error occurs (and | |
9794 | set *REMOTE_ERRNO). */ | |
9795 | ||
9796 | static int | |
9797 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9798 | ULONGEST offset, int *remote_errno) | |
9799 | { | |
9800 | struct remote_state *rs = get_remote_state (); | |
9801 | char *p = rs->buf; | |
9802 | char *attachment; | |
9803 | int left = get_remote_packet_size (); | |
9804 | int ret, attachment_len; | |
9805 | int read_len; | |
9806 | ||
9807 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9808 | ||
9809 | remote_buffer_add_int (&p, &left, fd); | |
9810 | remote_buffer_add_string (&p, &left, ","); | |
9811 | ||
9812 | remote_buffer_add_int (&p, &left, len); | |
9813 | remote_buffer_add_string (&p, &left, ","); | |
9814 | ||
9815 | remote_buffer_add_int (&p, &left, offset); | |
9816 | ||
9817 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9818 | remote_errno, &attachment, | |
9819 | &attachment_len); | |
9820 | ||
9821 | if (ret < 0) | |
9822 | return ret; | |
9823 | ||
bc20a4af | 9824 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
9825 | read_buf, len); |
9826 | if (read_len != ret) | |
9827 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9828 | ||
9829 | return ret; | |
9830 | } | |
9831 | ||
9832 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9833 | (and set *REMOTE_ERRNO). */ | |
9834 | ||
9835 | static int | |
9836 | remote_hostio_close (int fd, int *remote_errno) | |
9837 | { | |
9838 | struct remote_state *rs = get_remote_state (); | |
9839 | char *p = rs->buf; | |
9840 | int left = get_remote_packet_size () - 1; | |
9841 | ||
9842 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9843 | ||
9844 | remote_buffer_add_int (&p, &left, fd); | |
9845 | ||
9846 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9847 | remote_errno, NULL, NULL); | |
9848 | } | |
9849 | ||
9850 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9851 | occurs (and set *REMOTE_ERRNO). */ | |
9852 | ||
9853 | static int | |
9854 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9855 | { | |
9856 | struct remote_state *rs = get_remote_state (); | |
9857 | char *p = rs->buf; | |
9858 | int left = get_remote_packet_size () - 1; | |
9859 | ||
9860 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9861 | ||
9862 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9863 | strlen (filename)); | |
9864 | ||
9865 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9866 | remote_errno, NULL, NULL); | |
9867 | } | |
9868 | ||
b9e7b9c3 UW |
9869 | /* Read value of symbolic link FILENAME on the remote target. Return |
9870 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9871 | occurs (and set *REMOTE_ERRNO). */ | |
9872 | ||
9873 | static char * | |
9874 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9875 | { | |
9876 | struct remote_state *rs = get_remote_state (); | |
9877 | char *p = rs->buf; | |
9878 | char *attachment; | |
9879 | int left = get_remote_packet_size (); | |
9880 | int len, attachment_len; | |
9881 | int read_len; | |
9882 | char *ret; | |
9883 | ||
9884 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9885 | ||
9886 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9887 | strlen (filename)); | |
9888 | ||
9889 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9890 | remote_errno, &attachment, | |
9891 | &attachment_len); | |
9892 | ||
9893 | if (len < 0) | |
9894 | return NULL; | |
9895 | ||
9896 | ret = xmalloc (len + 1); | |
9897 | ||
bc20a4af PA |
9898 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
9899 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
9900 | if (read_len != len) |
9901 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9902 | ||
9903 | ret[len] = '\0'; | |
9904 | return ret; | |
9905 | } | |
9906 | ||
a6b151f1 DJ |
9907 | static int |
9908 | remote_fileio_errno_to_host (int errnum) | |
9909 | { | |
9910 | switch (errnum) | |
9911 | { | |
9912 | case FILEIO_EPERM: | |
9913 | return EPERM; | |
9914 | case FILEIO_ENOENT: | |
9915 | return ENOENT; | |
9916 | case FILEIO_EINTR: | |
9917 | return EINTR; | |
9918 | case FILEIO_EIO: | |
9919 | return EIO; | |
9920 | case FILEIO_EBADF: | |
9921 | return EBADF; | |
9922 | case FILEIO_EACCES: | |
9923 | return EACCES; | |
9924 | case FILEIO_EFAULT: | |
9925 | return EFAULT; | |
9926 | case FILEIO_EBUSY: | |
9927 | return EBUSY; | |
9928 | case FILEIO_EEXIST: | |
9929 | return EEXIST; | |
9930 | case FILEIO_ENODEV: | |
9931 | return ENODEV; | |
9932 | case FILEIO_ENOTDIR: | |
9933 | return ENOTDIR; | |
9934 | case FILEIO_EISDIR: | |
9935 | return EISDIR; | |
9936 | case FILEIO_EINVAL: | |
9937 | return EINVAL; | |
9938 | case FILEIO_ENFILE: | |
9939 | return ENFILE; | |
9940 | case FILEIO_EMFILE: | |
9941 | return EMFILE; | |
9942 | case FILEIO_EFBIG: | |
9943 | return EFBIG; | |
9944 | case FILEIO_ENOSPC: | |
9945 | return ENOSPC; | |
9946 | case FILEIO_ESPIPE: | |
9947 | return ESPIPE; | |
9948 | case FILEIO_EROFS: | |
9949 | return EROFS; | |
9950 | case FILEIO_ENOSYS: | |
9951 | return ENOSYS; | |
9952 | case FILEIO_ENAMETOOLONG: | |
9953 | return ENAMETOOLONG; | |
9954 | } | |
9955 | return -1; | |
9956 | } | |
9957 | ||
9958 | static char * | |
9959 | remote_hostio_error (int errnum) | |
9960 | { | |
9961 | int host_error = remote_fileio_errno_to_host (errnum); | |
9962 | ||
9963 | if (host_error == -1) | |
9964 | error (_("Unknown remote I/O error %d"), errnum); | |
9965 | else | |
9966 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9967 | } | |
9968 | ||
a6b151f1 DJ |
9969 | static void |
9970 | remote_hostio_close_cleanup (void *opaque) | |
9971 | { | |
9972 | int fd = *(int *) opaque; | |
9973 | int remote_errno; | |
9974 | ||
9975 | remote_hostio_close (fd, &remote_errno); | |
9976 | } | |
9977 | ||
f1838a98 UW |
9978 | |
9979 | static void * | |
9980 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9981 | { | |
9982 | const char *filename = bfd_get_filename (abfd); | |
9983 | int fd, remote_errno; | |
9984 | int *stream; | |
9985 | ||
9986 | gdb_assert (remote_filename_p (filename)); | |
9987 | ||
9988 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9989 | if (fd == -1) | |
9990 | { | |
9991 | errno = remote_fileio_errno_to_host (remote_errno); | |
9992 | bfd_set_error (bfd_error_system_call); | |
9993 | return NULL; | |
9994 | } | |
9995 | ||
9996 | stream = xmalloc (sizeof (int)); | |
9997 | *stream = fd; | |
9998 | return stream; | |
9999 | } | |
10000 | ||
10001 | static int | |
10002 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
10003 | { | |
10004 | int fd = *(int *)stream; | |
10005 | int remote_errno; | |
10006 | ||
10007 | xfree (stream); | |
10008 | ||
10009 | /* Ignore errors on close; these may happen if the remote | |
10010 | connection was already torn down. */ | |
10011 | remote_hostio_close (fd, &remote_errno); | |
10012 | ||
39ed5604 JK |
10013 | /* Zero means success. */ |
10014 | return 0; | |
f1838a98 UW |
10015 | } |
10016 | ||
10017 | static file_ptr | |
10018 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
10019 | file_ptr nbytes, file_ptr offset) | |
10020 | { | |
10021 | int fd = *(int *)stream; | |
10022 | int remote_errno; | |
10023 | file_ptr pos, bytes; | |
10024 | ||
10025 | pos = 0; | |
10026 | while (nbytes > pos) | |
10027 | { | |
bc20a4af | 10028 | bytes = remote_hostio_pread (fd, (gdb_byte *) buf + pos, nbytes - pos, |
f1838a98 UW |
10029 | offset + pos, &remote_errno); |
10030 | if (bytes == 0) | |
10031 | /* Success, but no bytes, means end-of-file. */ | |
10032 | break; | |
10033 | if (bytes == -1) | |
10034 | { | |
10035 | errno = remote_fileio_errno_to_host (remote_errno); | |
10036 | bfd_set_error (bfd_error_system_call); | |
10037 | return -1; | |
10038 | } | |
10039 | ||
10040 | pos += bytes; | |
10041 | } | |
10042 | ||
10043 | return pos; | |
10044 | } | |
10045 | ||
10046 | static int | |
10047 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
10048 | { | |
10049 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
10050 | sb->st_size = INT_MAX; | |
10051 | return 0; | |
10052 | } | |
10053 | ||
10054 | int | |
10055 | remote_filename_p (const char *filename) | |
10056 | { | |
3736004f PA |
10057 | return strncmp (filename, |
10058 | REMOTE_SYSROOT_PREFIX, | |
10059 | sizeof (REMOTE_SYSROOT_PREFIX) - 1) == 0; | |
f1838a98 UW |
10060 | } |
10061 | ||
10062 | bfd * | |
10063 | remote_bfd_open (const char *remote_file, const char *target) | |
10064 | { | |
64c31149 TT |
10065 | bfd *abfd = gdb_bfd_openr_iovec (remote_file, target, |
10066 | remote_bfd_iovec_open, NULL, | |
10067 | remote_bfd_iovec_pread, | |
10068 | remote_bfd_iovec_close, | |
10069 | remote_bfd_iovec_stat); | |
10070 | ||
a4453b7e | 10071 | return abfd; |
f1838a98 UW |
10072 | } |
10073 | ||
a6b151f1 DJ |
10074 | void |
10075 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10076 | { | |
10077 | struct cleanup *back_to, *close_cleanup; | |
10078 | int retcode, fd, remote_errno, bytes, io_size; | |
10079 | FILE *file; | |
10080 | gdb_byte *buffer; | |
10081 | int bytes_in_buffer; | |
10082 | int saw_eof; | |
10083 | ULONGEST offset; | |
5d93a237 | 10084 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10085 | |
5d93a237 | 10086 | if (!rs->remote_desc) |
a6b151f1 DJ |
10087 | error (_("command can only be used with remote target")); |
10088 | ||
614c279d | 10089 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10090 | if (file == NULL) |
10091 | perror_with_name (local_file); | |
7c8a8b04 | 10092 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10093 | |
10094 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
10095 | | FILEIO_O_TRUNC), | |
10096 | 0700, &remote_errno); | |
10097 | if (fd == -1) | |
10098 | remote_hostio_error (remote_errno); | |
10099 | ||
10100 | /* Send up to this many bytes at once. They won't all fit in the | |
10101 | remote packet limit, so we'll transfer slightly fewer. */ | |
10102 | io_size = get_remote_packet_size (); | |
10103 | buffer = xmalloc (io_size); | |
10104 | make_cleanup (xfree, buffer); | |
10105 | ||
10106 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10107 | ||
10108 | bytes_in_buffer = 0; | |
10109 | saw_eof = 0; | |
10110 | offset = 0; | |
10111 | while (bytes_in_buffer || !saw_eof) | |
10112 | { | |
10113 | if (!saw_eof) | |
10114 | { | |
3e43a32a MS |
10115 | bytes = fread (buffer + bytes_in_buffer, 1, |
10116 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10117 | file); |
10118 | if (bytes == 0) | |
10119 | { | |
10120 | if (ferror (file)) | |
10121 | error (_("Error reading %s."), local_file); | |
10122 | else | |
10123 | { | |
10124 | /* EOF. Unless there is something still in the | |
10125 | buffer from the last iteration, we are done. */ | |
10126 | saw_eof = 1; | |
10127 | if (bytes_in_buffer == 0) | |
10128 | break; | |
10129 | } | |
10130 | } | |
10131 | } | |
10132 | else | |
10133 | bytes = 0; | |
10134 | ||
10135 | bytes += bytes_in_buffer; | |
10136 | bytes_in_buffer = 0; | |
10137 | ||
3e43a32a MS |
10138 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
10139 | offset, &remote_errno); | |
a6b151f1 DJ |
10140 | |
10141 | if (retcode < 0) | |
10142 | remote_hostio_error (remote_errno); | |
10143 | else if (retcode == 0) | |
10144 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10145 | else if (retcode < bytes) | |
10146 | { | |
10147 | /* Short write. Save the rest of the read data for the next | |
10148 | write. */ | |
10149 | bytes_in_buffer = bytes - retcode; | |
10150 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10151 | } | |
10152 | ||
10153 | offset += retcode; | |
10154 | } | |
10155 | ||
10156 | discard_cleanups (close_cleanup); | |
10157 | if (remote_hostio_close (fd, &remote_errno)) | |
10158 | remote_hostio_error (remote_errno); | |
10159 | ||
10160 | if (from_tty) | |
10161 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10162 | do_cleanups (back_to); | |
10163 | } | |
10164 | ||
10165 | void | |
10166 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10167 | { | |
10168 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10169 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10170 | FILE *file; |
10171 | gdb_byte *buffer; | |
10172 | ULONGEST offset; | |
5d93a237 | 10173 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10174 | |
5d93a237 | 10175 | if (!rs->remote_desc) |
a6b151f1 DJ |
10176 | error (_("command can only be used with remote target")); |
10177 | ||
10178 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
10179 | if (fd == -1) | |
10180 | remote_hostio_error (remote_errno); | |
10181 | ||
614c279d | 10182 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10183 | if (file == NULL) |
10184 | perror_with_name (local_file); | |
7c8a8b04 | 10185 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10186 | |
10187 | /* Send up to this many bytes at once. They won't all fit in the | |
10188 | remote packet limit, so we'll transfer slightly fewer. */ | |
10189 | io_size = get_remote_packet_size (); | |
10190 | buffer = xmalloc (io_size); | |
10191 | make_cleanup (xfree, buffer); | |
10192 | ||
10193 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10194 | ||
10195 | offset = 0; | |
10196 | while (1) | |
10197 | { | |
10198 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
10199 | if (bytes == 0) | |
10200 | /* Success, but no bytes, means end-of-file. */ | |
10201 | break; | |
10202 | if (bytes == -1) | |
10203 | remote_hostio_error (remote_errno); | |
10204 | ||
10205 | offset += bytes; | |
10206 | ||
10207 | bytes = fwrite (buffer, 1, bytes, file); | |
10208 | if (bytes == 0) | |
10209 | perror_with_name (local_file); | |
10210 | } | |
10211 | ||
10212 | discard_cleanups (close_cleanup); | |
10213 | if (remote_hostio_close (fd, &remote_errno)) | |
10214 | remote_hostio_error (remote_errno); | |
10215 | ||
10216 | if (from_tty) | |
10217 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10218 | do_cleanups (back_to); | |
10219 | } | |
10220 | ||
10221 | void | |
10222 | remote_file_delete (const char *remote_file, int from_tty) | |
10223 | { | |
10224 | int retcode, remote_errno; | |
5d93a237 | 10225 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10226 | |
5d93a237 | 10227 | if (!rs->remote_desc) |
a6b151f1 DJ |
10228 | error (_("command can only be used with remote target")); |
10229 | ||
10230 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
10231 | if (retcode == -1) | |
10232 | remote_hostio_error (remote_errno); | |
10233 | ||
10234 | if (from_tty) | |
10235 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10236 | } | |
10237 | ||
10238 | static void | |
10239 | remote_put_command (char *args, int from_tty) | |
10240 | { | |
10241 | struct cleanup *back_to; | |
10242 | char **argv; | |
10243 | ||
d1a41061 PP |
10244 | if (args == NULL) |
10245 | error_no_arg (_("file to put")); | |
10246 | ||
10247 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10248 | back_to = make_cleanup_freeargv (argv); |
10249 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10250 | error (_("Invalid parameters to remote put")); | |
10251 | ||
10252 | remote_file_put (argv[0], argv[1], from_tty); | |
10253 | ||
10254 | do_cleanups (back_to); | |
10255 | } | |
10256 | ||
10257 | static void | |
10258 | remote_get_command (char *args, int from_tty) | |
10259 | { | |
10260 | struct cleanup *back_to; | |
10261 | char **argv; | |
10262 | ||
d1a41061 PP |
10263 | if (args == NULL) |
10264 | error_no_arg (_("file to get")); | |
10265 | ||
10266 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10267 | back_to = make_cleanup_freeargv (argv); |
10268 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10269 | error (_("Invalid parameters to remote get")); | |
10270 | ||
10271 | remote_file_get (argv[0], argv[1], from_tty); | |
10272 | ||
10273 | do_cleanups (back_to); | |
10274 | } | |
10275 | ||
10276 | static void | |
10277 | remote_delete_command (char *args, int from_tty) | |
10278 | { | |
10279 | struct cleanup *back_to; | |
10280 | char **argv; | |
10281 | ||
d1a41061 PP |
10282 | if (args == NULL) |
10283 | error_no_arg (_("file to delete")); | |
10284 | ||
10285 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10286 | back_to = make_cleanup_freeargv (argv); |
10287 | if (argv[0] == NULL || argv[1] != NULL) | |
10288 | error (_("Invalid parameters to remote delete")); | |
10289 | ||
10290 | remote_file_delete (argv[0], from_tty); | |
10291 | ||
10292 | do_cleanups (back_to); | |
10293 | } | |
10294 | ||
10295 | static void | |
10296 | remote_command (char *args, int from_tty) | |
10297 | { | |
10298 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
10299 | } | |
10300 | ||
b2175913 MS |
10301 | static int |
10302 | remote_can_execute_reverse (void) | |
10303 | { | |
40ab02ce MS |
10304 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
10305 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
10306 | return 1; | |
10307 | else | |
10308 | return 0; | |
b2175913 MS |
10309 | } |
10310 | ||
74531fed PA |
10311 | static int |
10312 | remote_supports_non_stop (void) | |
10313 | { | |
10314 | return 1; | |
10315 | } | |
10316 | ||
03583c20 UW |
10317 | static int |
10318 | remote_supports_disable_randomization (void) | |
10319 | { | |
10320 | /* Only supported in extended mode. */ | |
10321 | return 0; | |
10322 | } | |
10323 | ||
8a305172 PA |
10324 | static int |
10325 | remote_supports_multi_process (void) | |
10326 | { | |
10327 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10328 | |
901f9912 UW |
10329 | /* Only extended-remote handles being attached to multiple |
10330 | processes, even though plain remote can use the multi-process | |
10331 | thread id extensions, so that GDB knows the target process's | |
10332 | PID. */ | |
10333 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10334 | } |
10335 | ||
70221824 | 10336 | static int |
782b2b07 SS |
10337 | remote_supports_cond_tracepoints (void) |
10338 | { | |
10339 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10340 | |
782b2b07 SS |
10341 | return rs->cond_tracepoints; |
10342 | } | |
10343 | ||
3788aec7 LM |
10344 | static int |
10345 | remote_supports_cond_breakpoints (void) | |
10346 | { | |
10347 | struct remote_state *rs = get_remote_state (); | |
10348 | ||
10349 | return rs->cond_breakpoints; | |
10350 | } | |
10351 | ||
70221824 | 10352 | static int |
7a697b8d SS |
10353 | remote_supports_fast_tracepoints (void) |
10354 | { | |
10355 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10356 | |
7a697b8d SS |
10357 | return rs->fast_tracepoints; |
10358 | } | |
10359 | ||
0fb4aa4b PA |
10360 | static int |
10361 | remote_supports_static_tracepoints (void) | |
10362 | { | |
10363 | struct remote_state *rs = get_remote_state (); | |
10364 | ||
10365 | return rs->static_tracepoints; | |
10366 | } | |
10367 | ||
1e4d1764 YQ |
10368 | static int |
10369 | remote_supports_install_in_trace (void) | |
10370 | { | |
10371 | struct remote_state *rs = get_remote_state (); | |
10372 | ||
10373 | return rs->install_in_trace; | |
10374 | } | |
10375 | ||
d248b706 KY |
10376 | static int |
10377 | remote_supports_enable_disable_tracepoint (void) | |
10378 | { | |
10379 | struct remote_state *rs = get_remote_state (); | |
10380 | ||
10381 | return rs->enable_disable_tracepoints; | |
10382 | } | |
10383 | ||
3065dfb6 SS |
10384 | static int |
10385 | remote_supports_string_tracing (void) | |
10386 | { | |
10387 | struct remote_state *rs = get_remote_state (); | |
10388 | ||
10389 | return rs->string_tracing; | |
10390 | } | |
10391 | ||
d3ce09f5 SS |
10392 | static int |
10393 | remote_can_run_breakpoint_commands (void) | |
10394 | { | |
10395 | struct remote_state *rs = get_remote_state (); | |
10396 | ||
10397 | return rs->breakpoint_commands; | |
10398 | } | |
10399 | ||
35b1e5cc | 10400 | static void |
ad91cd99 | 10401 | remote_trace_init (void) |
35b1e5cc SS |
10402 | { |
10403 | putpkt ("QTinit"); | |
10404 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10405 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10406 | error (_("Target does not support this command.")); |
10407 | } | |
10408 | ||
10409 | static void free_actions_list (char **actions_list); | |
10410 | static void free_actions_list_cleanup_wrapper (void *); | |
10411 | static void | |
10412 | free_actions_list_cleanup_wrapper (void *al) | |
10413 | { | |
10414 | free_actions_list (al); | |
10415 | } | |
10416 | ||
10417 | static void | |
10418 | free_actions_list (char **actions_list) | |
10419 | { | |
10420 | int ndx; | |
10421 | ||
10422 | if (actions_list == 0) | |
10423 | return; | |
10424 | ||
10425 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10426 | xfree (actions_list[ndx]); | |
10427 | ||
10428 | xfree (actions_list); | |
10429 | } | |
10430 | ||
409873ef SS |
10431 | /* Recursive routine to walk through command list including loops, and |
10432 | download packets for each command. */ | |
10433 | ||
10434 | static void | |
10435 | remote_download_command_source (int num, ULONGEST addr, | |
10436 | struct command_line *cmds) | |
10437 | { | |
10438 | struct remote_state *rs = get_remote_state (); | |
10439 | struct command_line *cmd; | |
10440 | ||
10441 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10442 | { | |
0df8b418 | 10443 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10444 | strcpy (rs->buf, "QTDPsrc:"); |
10445 | encode_source_string (num, addr, "cmd", cmd->line, | |
10446 | rs->buf + strlen (rs->buf), | |
10447 | rs->buf_size - strlen (rs->buf)); | |
10448 | putpkt (rs->buf); | |
10449 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10450 | if (strcmp (target_buf, "OK")) | |
10451 | warning (_("Target does not support source download.")); | |
10452 | ||
10453 | if (cmd->control_type == while_control | |
10454 | || cmd->control_type == while_stepping_control) | |
10455 | { | |
10456 | remote_download_command_source (num, addr, *cmd->body_list); | |
10457 | ||
0df8b418 | 10458 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10459 | strcpy (rs->buf, "QTDPsrc:"); |
10460 | encode_source_string (num, addr, "cmd", "end", | |
10461 | rs->buf + strlen (rs->buf), | |
10462 | rs->buf_size - strlen (rs->buf)); | |
10463 | putpkt (rs->buf); | |
10464 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10465 | if (strcmp (target_buf, "OK")) | |
10466 | warning (_("Target does not support source download.")); | |
10467 | } | |
10468 | } | |
10469 | } | |
10470 | ||
35b1e5cc | 10471 | static void |
e8ba3115 | 10472 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 10473 | { |
bba74b36 | 10474 | #define BUF_SIZE 2048 |
e8ba3115 | 10475 | |
35b1e5cc | 10476 | CORE_ADDR tpaddr; |
409873ef | 10477 | char addrbuf[40]; |
bba74b36 | 10478 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10479 | char **tdp_actions; |
10480 | char **stepping_actions; | |
10481 | int ndx; | |
10482 | struct cleanup *old_chain = NULL; | |
10483 | struct agent_expr *aexpr; | |
10484 | struct cleanup *aexpr_chain = NULL; | |
10485 | char *pkt; | |
e8ba3115 | 10486 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10487 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10488 | |
dc673c81 | 10489 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
10490 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
10491 | tdp_actions); | |
10492 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10493 | stepping_actions); | |
10494 | ||
10495 | tpaddr = loc->address; | |
10496 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10497 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10498 | addrbuf, /* address */ | |
10499 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10500 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10501 | /* Fast tracepoints are mostly handled by the target, but we can |
10502 | tell the target how big of an instruction block should be moved | |
10503 | around. */ | |
10504 | if (b->type == bp_fast_tracepoint) | |
10505 | { | |
10506 | /* Only test for support at download time; we may not know | |
10507 | target capabilities at definition time. */ | |
10508 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10509 | { |
e8ba3115 | 10510 | int isize; |
35b1e5cc | 10511 | |
f5656ead | 10512 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
e8ba3115 | 10513 | tpaddr, &isize, NULL)) |
bba74b36 YQ |
10514 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10515 | isize); | |
35b1e5cc | 10516 | else |
e8ba3115 YQ |
10517 | /* If it passed validation at definition but fails now, |
10518 | something is very wrong. */ | |
10519 | internal_error (__FILE__, __LINE__, | |
10520 | _("Fast tracepoint not " | |
10521 | "valid during download")); | |
35b1e5cc | 10522 | } |
e8ba3115 YQ |
10523 | else |
10524 | /* Fast tracepoints are functionally identical to regular | |
10525 | tracepoints, so don't take lack of support as a reason to | |
10526 | give up on the trace run. */ | |
10527 | warning (_("Target does not support fast tracepoints, " | |
10528 | "downloading %d as regular tracepoint"), b->number); | |
10529 | } | |
10530 | else if (b->type == bp_static_tracepoint) | |
10531 | { | |
10532 | /* Only test for support at download time; we may not know | |
10533 | target capabilities at definition time. */ | |
10534 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10535 | { |
e8ba3115 | 10536 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10537 | |
e8ba3115 YQ |
10538 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10539 | strcat (buf, ":S"); | |
0fb4aa4b | 10540 | else |
e8ba3115 | 10541 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10542 | } |
e8ba3115 YQ |
10543 | else |
10544 | /* Fast tracepoints are functionally identical to regular | |
10545 | tracepoints, so don't take lack of support as a reason | |
10546 | to give up on the trace run. */ | |
10547 | error (_("Target does not support static tracepoints")); | |
10548 | } | |
10549 | /* If the tracepoint has a conditional, make it into an agent | |
10550 | expression and append to the definition. */ | |
10551 | if (loc->cond) | |
10552 | { | |
10553 | /* Only test support at download time, we may not know target | |
10554 | capabilities at definition time. */ | |
10555 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10556 | { |
e8ba3115 YQ |
10557 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10558 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10559 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10560 | aexpr->len); | |
e8ba3115 YQ |
10561 | pkt = buf + strlen (buf); |
10562 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10563 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10564 | *pkt = '\0'; | |
10565 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10566 | } |
e8ba3115 YQ |
10567 | else |
10568 | warning (_("Target does not support conditional tracepoints, " | |
10569 | "ignoring tp %d cond"), b->number); | |
10570 | } | |
35b1e5cc | 10571 | |
d9b3f62e | 10572 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10573 | strcat (buf, "-"); |
10574 | putpkt (buf); | |
10575 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10576 | if (strcmp (target_buf, "OK")) | |
10577 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10578 | |
e8ba3115 YQ |
10579 | /* do_single_steps (t); */ |
10580 | if (tdp_actions) | |
10581 | { | |
10582 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10583 | { |
e8ba3115 | 10584 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10585 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10586 | b->number, addrbuf, /* address */ | |
10587 | tdp_actions[ndx], | |
10588 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10589 | ? '-' : 0)); | |
e8ba3115 YQ |
10590 | putpkt (buf); |
10591 | remote_get_noisy_reply (&target_buf, | |
10592 | &target_buf_size); | |
10593 | if (strcmp (target_buf, "OK")) | |
10594 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10595 | } |
e8ba3115 YQ |
10596 | } |
10597 | if (stepping_actions) | |
10598 | { | |
10599 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10600 | { |
e8ba3115 | 10601 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10602 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10603 | b->number, addrbuf, /* address */ | |
10604 | ((ndx == 0) ? "S" : ""), | |
10605 | stepping_actions[ndx], | |
10606 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10607 | putpkt (buf); |
10608 | remote_get_noisy_reply (&target_buf, | |
10609 | &target_buf_size); | |
10610 | if (strcmp (target_buf, "OK")) | |
10611 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10612 | } |
e8ba3115 | 10613 | } |
409873ef | 10614 | |
e8ba3115 YQ |
10615 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10616 | == PACKET_ENABLE) | |
10617 | { | |
10618 | if (b->addr_string) | |
409873ef | 10619 | { |
e8ba3115 YQ |
10620 | strcpy (buf, "QTDPsrc:"); |
10621 | encode_source_string (b->number, loc->address, | |
10622 | "at", b->addr_string, buf + strlen (buf), | |
10623 | 2048 - strlen (buf)); | |
409873ef | 10624 | |
e8ba3115 YQ |
10625 | putpkt (buf); |
10626 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10627 | if (strcmp (target_buf, "OK")) | |
10628 | warning (_("Target does not support source download.")); | |
409873ef | 10629 | } |
e8ba3115 YQ |
10630 | if (b->cond_string) |
10631 | { | |
10632 | strcpy (buf, "QTDPsrc:"); | |
10633 | encode_source_string (b->number, loc->address, | |
10634 | "cond", b->cond_string, buf + strlen (buf), | |
10635 | 2048 - strlen (buf)); | |
10636 | putpkt (buf); | |
10637 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10638 | if (strcmp (target_buf, "OK")) | |
10639 | warning (_("Target does not support source download.")); | |
10640 | } | |
10641 | remote_download_command_source (b->number, loc->address, | |
10642 | breakpoint_commands (b)); | |
35b1e5cc | 10643 | } |
e8ba3115 YQ |
10644 | |
10645 | do_cleanups (old_chain); | |
35b1e5cc SS |
10646 | } |
10647 | ||
1e4d1764 YQ |
10648 | static int |
10649 | remote_can_download_tracepoint (void) | |
10650 | { | |
1e51243a PA |
10651 | struct remote_state *rs = get_remote_state (); |
10652 | struct trace_status *ts; | |
10653 | int status; | |
10654 | ||
10655 | /* Don't try to install tracepoints until we've relocated our | |
10656 | symbols, and fetched and merged the target's tracepoint list with | |
10657 | ours. */ | |
10658 | if (rs->starting_up) | |
10659 | return 0; | |
10660 | ||
10661 | ts = current_trace_status (); | |
10662 | status = remote_get_trace_status (ts); | |
1e4d1764 YQ |
10663 | |
10664 | if (status == -1 || !ts->running_known || !ts->running) | |
10665 | return 0; | |
10666 | ||
10667 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10668 | installing tracepoint in trace, we have to return. */ | |
10669 | if (!remote_supports_install_in_trace ()) | |
10670 | return 0; | |
10671 | ||
10672 | return 1; | |
10673 | } | |
10674 | ||
10675 | ||
35b1e5cc SS |
10676 | static void |
10677 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10678 | { | |
10679 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10680 | char *p; |
35b1e5cc | 10681 | |
bba74b36 YQ |
10682 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10683 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10684 | tsv->builtin); | |
00bf0b85 SS |
10685 | p = rs->buf + strlen (rs->buf); |
10686 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10687 | error (_("Trace state variable name too long for tsv definition packet")); | |
10688 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10689 | *p++ = '\0'; | |
35b1e5cc SS |
10690 | putpkt (rs->buf); |
10691 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10692 | if (*target_buf == '\0') |
10693 | error (_("Target does not support this command.")); | |
10694 | if (strcmp (target_buf, "OK") != 0) | |
10695 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10696 | } |
10697 | ||
d248b706 KY |
10698 | static void |
10699 | remote_enable_tracepoint (struct bp_location *location) | |
10700 | { | |
10701 | struct remote_state *rs = get_remote_state (); | |
10702 | char addr_buf[40]; | |
10703 | ||
10704 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10705 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10706 | location->owner->number, addr_buf); | |
d248b706 KY |
10707 | putpkt (rs->buf); |
10708 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10709 | if (*rs->buf == '\0') | |
10710 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10711 | if (strcmp (rs->buf, "OK") != 0) | |
10712 | error (_("Error on target while enabling tracepoint.")); | |
10713 | } | |
10714 | ||
10715 | static void | |
10716 | remote_disable_tracepoint (struct bp_location *location) | |
10717 | { | |
10718 | struct remote_state *rs = get_remote_state (); | |
10719 | char addr_buf[40]; | |
10720 | ||
10721 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10722 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10723 | location->owner->number, addr_buf); | |
d248b706 KY |
10724 | putpkt (rs->buf); |
10725 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10726 | if (*rs->buf == '\0') | |
10727 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10728 | if (strcmp (rs->buf, "OK") != 0) | |
10729 | error (_("Error on target while disabling tracepoint.")); | |
10730 | } | |
10731 | ||
35b1e5cc | 10732 | static void |
ad91cd99 | 10733 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10734 | { |
10735 | asection *s; | |
81b9b86e | 10736 | bfd *abfd = NULL; |
35b1e5cc | 10737 | bfd_size_type size; |
608bcef2 | 10738 | bfd_vma vma; |
35b1e5cc | 10739 | int anysecs = 0; |
c2fa21f1 | 10740 | int offset = 0; |
35b1e5cc SS |
10741 | |
10742 | if (!exec_bfd) | |
10743 | return; /* No information to give. */ | |
10744 | ||
10745 | strcpy (target_buf, "QTro"); | |
9779ab84 | 10746 | offset = strlen (target_buf); |
35b1e5cc SS |
10747 | for (s = exec_bfd->sections; s; s = s->next) |
10748 | { | |
10749 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10750 | int sec_length; |
35b1e5cc SS |
10751 | |
10752 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10753 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10754 | (s->flags & SEC_READONLY) == 0) |
10755 | continue; | |
10756 | ||
10757 | anysecs = 1; | |
81b9b86e | 10758 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10759 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10760 | sprintf_vma (tmp1, vma); |
10761 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10762 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10763 | if (offset + sec_length + 1 > target_buf_size) | |
10764 | { | |
864ac8a7 HZ |
10765 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10766 | != PACKET_ENABLE) | |
10767 | warning (_("\ | |
c2fa21f1 HZ |
10768 | Too many sections for read-only sections definition packet.")); |
10769 | break; | |
10770 | } | |
bba74b36 YQ |
10771 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10772 | tmp1, tmp2); | |
c2fa21f1 | 10773 | offset += sec_length; |
35b1e5cc SS |
10774 | } |
10775 | if (anysecs) | |
10776 | { | |
10777 | putpkt (target_buf); | |
10778 | getpkt (&target_buf, &target_buf_size, 0); | |
10779 | } | |
10780 | } | |
10781 | ||
10782 | static void | |
ad91cd99 | 10783 | remote_trace_start (void) |
35b1e5cc SS |
10784 | { |
10785 | putpkt ("QTStart"); | |
10786 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10787 | if (*target_buf == '\0') |
10788 | error (_("Target does not support this command.")); | |
10789 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10790 | error (_("Bogus reply from target: %s"), target_buf); |
10791 | } | |
10792 | ||
10793 | static int | |
00bf0b85 | 10794 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10795 | { |
953b98d1 | 10796 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10797 | char *p = NULL; |
0df8b418 | 10798 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10799 | extern int trace_regblock_size; |
67f41397 | 10800 | volatile struct gdb_exception ex; |
bd3eecc3 PA |
10801 | enum packet_result result; |
10802 | ||
10803 | if (remote_protocol_packets[PACKET_qTStatus].support == PACKET_DISABLE) | |
10804 | return -1; | |
a744cf53 | 10805 | |
00bf0b85 SS |
10806 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10807 | ||
049dc89b JK |
10808 | putpkt ("qTStatus"); |
10809 | ||
67f41397 JK |
10810 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
10811 | { | |
10812 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10813 | } | |
10814 | if (ex.reason < 0) | |
10815 | { | |
598d3636 JK |
10816 | if (ex.error != TARGET_CLOSE_ERROR) |
10817 | { | |
10818 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10819 | return -1; | |
10820 | } | |
10821 | throw_exception (ex); | |
67f41397 | 10822 | } |
00bf0b85 | 10823 | |
bd3eecc3 PA |
10824 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
10825 | ||
00bf0b85 | 10826 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 10827 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 10828 | return -1; |
35b1e5cc | 10829 | |
00bf0b85 | 10830 | /* We're working with a live target. */ |
f5911ea1 | 10831 | ts->filename = NULL; |
00bf0b85 | 10832 | |
00bf0b85 | 10833 | if (*p++ != 'T') |
35b1e5cc SS |
10834 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10835 | ||
84cebc4a YQ |
10836 | /* Function 'parse_trace_status' sets default value of each field of |
10837 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
10838 | parse_trace_status (p, ts); |
10839 | ||
10840 | return ts->running; | |
35b1e5cc SS |
10841 | } |
10842 | ||
70221824 | 10843 | static void |
f196051f SS |
10844 | remote_get_tracepoint_status (struct breakpoint *bp, |
10845 | struct uploaded_tp *utp) | |
10846 | { | |
10847 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10848 | char *reply; |
10849 | struct bp_location *loc; | |
10850 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10851 | size_t size = get_remote_packet_size (); |
f196051f SS |
10852 | |
10853 | if (tp) | |
10854 | { | |
10855 | tp->base.hit_count = 0; | |
10856 | tp->traceframe_usage = 0; | |
10857 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10858 | { | |
10859 | /* If the tracepoint was never downloaded, don't go asking for | |
10860 | any status. */ | |
10861 | if (tp->number_on_target == 0) | |
10862 | continue; | |
bba74b36 YQ |
10863 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
10864 | phex_nz (loc->address, 0)); | |
f196051f SS |
10865 | putpkt (rs->buf); |
10866 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10867 | if (reply && *reply) | |
10868 | { | |
10869 | if (*reply == 'V') | |
10870 | parse_tracepoint_status (reply + 1, bp, utp); | |
10871 | } | |
10872 | } | |
10873 | } | |
10874 | else if (utp) | |
10875 | { | |
10876 | utp->hit_count = 0; | |
10877 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
10878 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
10879 | phex_nz (utp->addr, 0)); | |
f196051f SS |
10880 | putpkt (rs->buf); |
10881 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10882 | if (reply && *reply) | |
10883 | { | |
10884 | if (*reply == 'V') | |
10885 | parse_tracepoint_status (reply + 1, bp, utp); | |
10886 | } | |
10887 | } | |
10888 | } | |
10889 | ||
35b1e5cc | 10890 | static void |
ad91cd99 | 10891 | remote_trace_stop (void) |
35b1e5cc SS |
10892 | { |
10893 | putpkt ("QTStop"); | |
10894 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10895 | if (*target_buf == '\0') |
10896 | error (_("Target does not support this command.")); | |
10897 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10898 | error (_("Bogus reply from target: %s"), target_buf); |
10899 | } | |
10900 | ||
10901 | static int | |
10902 | remote_trace_find (enum trace_find_type type, int num, | |
cc5925ad | 10903 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
10904 | int *tpp) |
10905 | { | |
10906 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 10907 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
10908 | char *p, *reply; |
10909 | int target_frameno = -1, target_tracept = -1; | |
10910 | ||
e6e4e701 PA |
10911 | /* Lookups other than by absolute frame number depend on the current |
10912 | trace selected, so make sure it is correct on the remote end | |
10913 | first. */ | |
10914 | if (type != tfind_number) | |
10915 | set_remote_traceframe (); | |
10916 | ||
35b1e5cc SS |
10917 | p = rs->buf; |
10918 | strcpy (p, "QTFrame:"); | |
10919 | p = strchr (p, '\0'); | |
10920 | switch (type) | |
10921 | { | |
10922 | case tfind_number: | |
bba74b36 | 10923 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
10924 | break; |
10925 | case tfind_pc: | |
bba74b36 | 10926 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10927 | break; |
10928 | case tfind_tp: | |
bba74b36 | 10929 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
10930 | break; |
10931 | case tfind_range: | |
bba74b36 YQ |
10932 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
10933 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10934 | break; |
10935 | case tfind_outside: | |
bba74b36 YQ |
10936 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
10937 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10938 | break; |
10939 | default: | |
9b20d036 | 10940 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10941 | } |
10942 | ||
10943 | putpkt (rs->buf); | |
2f65bcb7 | 10944 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
10945 | if (*reply == '\0') |
10946 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10947 | |
10948 | while (reply && *reply) | |
10949 | switch (*reply) | |
10950 | { | |
10951 | case 'F': | |
f197e0f1 VP |
10952 | p = ++reply; |
10953 | target_frameno = (int) strtol (p, &reply, 16); | |
10954 | if (reply == p) | |
10955 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10956 | /* Don't update our remote traceframe number cache on failure |
10957 | to select a remote traceframe. */ | |
f197e0f1 VP |
10958 | if (target_frameno == -1) |
10959 | return -1; | |
35b1e5cc SS |
10960 | break; |
10961 | case 'T': | |
f197e0f1 VP |
10962 | p = ++reply; |
10963 | target_tracept = (int) strtol (p, &reply, 16); | |
10964 | if (reply == p) | |
10965 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10966 | break; |
10967 | case 'O': /* "OK"? */ | |
10968 | if (reply[1] == 'K' && reply[2] == '\0') | |
10969 | reply += 2; | |
10970 | else | |
10971 | error (_("Bogus reply from target: %s"), reply); | |
10972 | break; | |
10973 | default: | |
10974 | error (_("Bogus reply from target: %s"), reply); | |
10975 | } | |
10976 | if (tpp) | |
10977 | *tpp = target_tracept; | |
e6e4e701 | 10978 | |
262e1174 | 10979 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
10980 | return target_frameno; |
10981 | } | |
10982 | ||
10983 | static int | |
10984 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10985 | { | |
10986 | struct remote_state *rs = get_remote_state (); | |
10987 | char *reply; | |
10988 | ULONGEST uval; | |
10989 | ||
e6e4e701 PA |
10990 | set_remote_traceframe (); |
10991 | ||
bba74b36 | 10992 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
10993 | putpkt (rs->buf); |
10994 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10995 | if (reply && *reply) | |
10996 | { | |
10997 | if (*reply == 'V') | |
10998 | { | |
10999 | unpack_varlen_hex (reply + 1, &uval); | |
11000 | *val = (LONGEST) uval; | |
11001 | return 1; | |
11002 | } | |
11003 | } | |
11004 | return 0; | |
11005 | } | |
11006 | ||
00bf0b85 | 11007 | static int |
011aacb0 | 11008 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
11009 | { |
11010 | struct remote_state *rs = get_remote_state (); | |
11011 | char *p, *reply; | |
11012 | ||
11013 | p = rs->buf; | |
11014 | strcpy (p, "QTSave:"); | |
11015 | p += strlen (p); | |
11016 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11017 | error (_("Remote file name too long for trace save packet")); | |
11018 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
11019 | *p++ = '\0'; | |
11020 | putpkt (rs->buf); | |
ad91cd99 | 11021 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 11022 | if (*reply == '\0') |
ad91cd99 PA |
11023 | error (_("Target does not support this command.")); |
11024 | if (strcmp (reply, "OK") != 0) | |
11025 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
11026 | return 0; |
11027 | } | |
11028 | ||
11029 | /* This is basically a memory transfer, but needs to be its own packet | |
11030 | because we don't know how the target actually organizes its trace | |
11031 | memory, plus we want to be able to ask for as much as possible, but | |
11032 | not be unhappy if we don't get as much as we ask for. */ | |
11033 | ||
11034 | static LONGEST | |
11035 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
11036 | { | |
11037 | struct remote_state *rs = get_remote_state (); | |
11038 | char *reply; | |
11039 | char *p; | |
11040 | int rslt; | |
11041 | ||
11042 | p = rs->buf; | |
11043 | strcpy (p, "qTBuffer:"); | |
11044 | p += strlen (p); | |
11045 | p += hexnumstr (p, offset); | |
11046 | *p++ = ','; | |
11047 | p += hexnumstr (p, len); | |
11048 | *p++ = '\0'; | |
11049 | ||
11050 | putpkt (rs->buf); | |
11051 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11052 | if (reply && *reply) | |
11053 | { | |
11054 | /* 'l' by itself means we're at the end of the buffer and | |
11055 | there is nothing more to get. */ | |
11056 | if (*reply == 'l') | |
11057 | return 0; | |
11058 | ||
11059 | /* Convert the reply into binary. Limit the number of bytes to | |
11060 | convert according to our passed-in buffer size, rather than | |
11061 | what was returned in the packet; if the target is | |
11062 | unexpectedly generous and gives us a bigger reply than we | |
11063 | asked for, we don't want to crash. */ | |
11064 | rslt = hex2bin (target_buf, buf, len); | |
11065 | return rslt; | |
11066 | } | |
11067 | ||
11068 | /* Something went wrong, flag as an error. */ | |
11069 | return -1; | |
11070 | } | |
11071 | ||
35b1e5cc SS |
11072 | static void |
11073 | remote_set_disconnected_tracing (int val) | |
11074 | { | |
11075 | struct remote_state *rs = get_remote_state (); | |
11076 | ||
33da3f1c SS |
11077 | if (rs->disconnected_tracing) |
11078 | { | |
ad91cd99 PA |
11079 | char *reply; |
11080 | ||
bba74b36 | 11081 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11082 | putpkt (rs->buf); |
ad91cd99 PA |
11083 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11084 | if (*reply == '\0') | |
33da3f1c | 11085 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11086 | if (strcmp (reply, "OK") != 0) |
11087 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11088 | } |
11089 | else if (val) | |
11090 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11091 | } |
11092 | ||
dc146f7c VP |
11093 | static int |
11094 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11095 | { | |
11096 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11097 | |
dc146f7c VP |
11098 | if (info && info->private) |
11099 | return info->private->core; | |
11100 | return -1; | |
11101 | } | |
11102 | ||
4daf5ac0 SS |
11103 | static void |
11104 | remote_set_circular_trace_buffer (int val) | |
11105 | { | |
11106 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11107 | char *reply; |
4daf5ac0 | 11108 | |
bba74b36 | 11109 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11110 | putpkt (rs->buf); |
ad91cd99 PA |
11111 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11112 | if (*reply == '\0') | |
4daf5ac0 | 11113 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11114 | if (strcmp (reply, "OK") != 0) |
11115 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11116 | } |
11117 | ||
b3b9301e PA |
11118 | static struct traceframe_info * |
11119 | remote_traceframe_info (void) | |
11120 | { | |
11121 | char *text; | |
11122 | ||
11123 | text = target_read_stralloc (¤t_target, | |
11124 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11125 | if (text != NULL) | |
11126 | { | |
11127 | struct traceframe_info *info; | |
11128 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11129 | ||
11130 | info = parse_traceframe_info (text); | |
11131 | do_cleanups (back_to); | |
11132 | return info; | |
11133 | } | |
11134 | ||
11135 | return NULL; | |
11136 | } | |
11137 | ||
405f8e94 SS |
11138 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11139 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11140 | if the packet is not supported, and 0 if the minimum instruction | |
11141 | length is unknown. */ | |
11142 | ||
11143 | static int | |
11144 | remote_get_min_fast_tracepoint_insn_len (void) | |
11145 | { | |
11146 | struct remote_state *rs = get_remote_state (); | |
11147 | char *reply; | |
11148 | ||
e886a173 PA |
11149 | /* If we're not debugging a process yet, the IPA can't be |
11150 | loaded. */ | |
11151 | if (!target_has_execution) | |
11152 | return 0; | |
11153 | ||
11154 | /* Make sure the remote is pointing at the right process. */ | |
11155 | set_general_process (); | |
11156 | ||
bba74b36 | 11157 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11158 | putpkt (rs->buf); |
11159 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11160 | if (*reply == '\0') | |
11161 | return -1; | |
11162 | else | |
11163 | { | |
11164 | ULONGEST min_insn_len; | |
11165 | ||
11166 | unpack_varlen_hex (reply, &min_insn_len); | |
11167 | ||
11168 | return (int) min_insn_len; | |
11169 | } | |
11170 | } | |
11171 | ||
f6f899bf HAQ |
11172 | static void |
11173 | remote_set_trace_buffer_size (LONGEST val) | |
11174 | { | |
90585175 HAQ |
11175 | if (remote_protocol_packets[PACKET_QTBuffer_size].support |
11176 | != PACKET_DISABLE) | |
f6f899bf HAQ |
11177 | { |
11178 | struct remote_state *rs = get_remote_state (); | |
11179 | char *buf = rs->buf; | |
11180 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11181 | enum packet_result result; | |
11182 | ||
11183 | gdb_assert (val >= 0 || val == -1); | |
11184 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11185 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11186 | if (val < 0) | |
11187 | { | |
11188 | *buf++ = '-'; | |
11189 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11190 | } | |
11191 | else | |
11192 | buf += hexnumstr (buf, (ULONGEST) val); | |
11193 | ||
11194 | putpkt (rs->buf); | |
11195 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11196 | result = packet_ok (rs->buf, | |
11197 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11198 | ||
11199 | if (result != PACKET_OK) | |
11200 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11201 | } | |
11202 | } | |
11203 | ||
f196051f | 11204 | static int |
ca623f82 TT |
11205 | remote_set_trace_notes (const char *user, const char *notes, |
11206 | const char *stop_notes) | |
f196051f SS |
11207 | { |
11208 | struct remote_state *rs = get_remote_state (); | |
11209 | char *reply; | |
11210 | char *buf = rs->buf; | |
11211 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11212 | int nbytes; | |
11213 | ||
11214 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11215 | if (user) | |
11216 | { | |
11217 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
bc20a4af | 11218 | nbytes = bin2hex ((gdb_byte *) user, buf, 0); |
f196051f SS |
11219 | buf += 2 * nbytes; |
11220 | *buf++ = ';'; | |
11221 | } | |
11222 | if (notes) | |
11223 | { | |
11224 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
bc20a4af | 11225 | nbytes = bin2hex ((gdb_byte *) notes, buf, 0); |
f196051f SS |
11226 | buf += 2 * nbytes; |
11227 | *buf++ = ';'; | |
11228 | } | |
11229 | if (stop_notes) | |
11230 | { | |
11231 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
bc20a4af | 11232 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, 0); |
f196051f SS |
11233 | buf += 2 * nbytes; |
11234 | *buf++ = ';'; | |
11235 | } | |
11236 | /* Ensure the buffer is terminated. */ | |
11237 | *buf = '\0'; | |
11238 | ||
11239 | putpkt (rs->buf); | |
11240 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11241 | if (*reply == '\0') | |
11242 | return 0; | |
11243 | ||
11244 | if (strcmp (reply, "OK") != 0) | |
11245 | error (_("Bogus reply from target: %s"), reply); | |
11246 | ||
11247 | return 1; | |
11248 | } | |
11249 | ||
d1feda86 YQ |
11250 | static int |
11251 | remote_use_agent (int use) | |
11252 | { | |
11253 | if (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE) | |
11254 | { | |
11255 | struct remote_state *rs = get_remote_state (); | |
11256 | ||
11257 | /* If the stub supports QAgent. */ | |
bba74b36 | 11258 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11259 | putpkt (rs->buf); |
11260 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11261 | ||
11262 | if (strcmp (rs->buf, "OK") == 0) | |
11263 | { | |
11264 | use_agent = use; | |
11265 | return 1; | |
11266 | } | |
11267 | } | |
11268 | ||
11269 | return 0; | |
11270 | } | |
11271 | ||
11272 | static int | |
11273 | remote_can_use_agent (void) | |
11274 | { | |
11275 | return (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE); | |
11276 | } | |
11277 | ||
9accd112 MM |
11278 | struct btrace_target_info |
11279 | { | |
11280 | /* The ptid of the traced thread. */ | |
11281 | ptid_t ptid; | |
11282 | }; | |
11283 | ||
11284 | /* Check whether the target supports branch tracing. */ | |
11285 | ||
11286 | static int | |
11287 | remote_supports_btrace (void) | |
11288 | { | |
11289 | if (remote_protocol_packets[PACKET_Qbtrace_off].support != PACKET_ENABLE) | |
11290 | return 0; | |
11291 | if (remote_protocol_packets[PACKET_Qbtrace_bts].support != PACKET_ENABLE) | |
11292 | return 0; | |
11293 | if (remote_protocol_packets[PACKET_qXfer_btrace].support != PACKET_ENABLE) | |
11294 | return 0; | |
11295 | ||
11296 | return 1; | |
11297 | } | |
11298 | ||
11299 | /* Enable branch tracing. */ | |
11300 | ||
11301 | static struct btrace_target_info * | |
11302 | remote_enable_btrace (ptid_t ptid) | |
11303 | { | |
11304 | struct btrace_target_info *tinfo = NULL; | |
11305 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
11306 | struct remote_state *rs = get_remote_state (); | |
11307 | char *buf = rs->buf; | |
11308 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11309 | ||
11310 | if (packet->support != PACKET_ENABLE) | |
11311 | error (_("Target does not support branch tracing.")); | |
11312 | ||
11313 | set_general_thread (ptid); | |
11314 | ||
11315 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11316 | putpkt (rs->buf); | |
11317 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11318 | ||
11319 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11320 | { | |
11321 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11322 | error (_("Could not enable branch tracing for %s: %s"), | |
11323 | target_pid_to_str (ptid), rs->buf + 2); | |
11324 | else | |
11325 | error (_("Could not enable branch tracing for %s."), | |
11326 | target_pid_to_str (ptid)); | |
11327 | } | |
11328 | ||
11329 | tinfo = xzalloc (sizeof (*tinfo)); | |
11330 | tinfo->ptid = ptid; | |
11331 | ||
11332 | return tinfo; | |
11333 | } | |
11334 | ||
11335 | /* Disable branch tracing. */ | |
11336 | ||
11337 | static void | |
11338 | remote_disable_btrace (struct btrace_target_info *tinfo) | |
11339 | { | |
11340 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
11341 | struct remote_state *rs = get_remote_state (); | |
11342 | char *buf = rs->buf; | |
11343 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11344 | ||
11345 | if (packet->support != PACKET_ENABLE) | |
11346 | error (_("Target does not support branch tracing.")); | |
11347 | ||
11348 | set_general_thread (tinfo->ptid); | |
11349 | ||
11350 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11351 | putpkt (rs->buf); | |
11352 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11353 | ||
11354 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11355 | { | |
11356 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11357 | error (_("Could not disable branch tracing for %s: %s"), | |
11358 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
11359 | else | |
11360 | error (_("Could not disable branch tracing for %s."), | |
11361 | target_pid_to_str (tinfo->ptid)); | |
11362 | } | |
11363 | ||
11364 | xfree (tinfo); | |
11365 | } | |
11366 | ||
11367 | /* Teardown branch tracing. */ | |
11368 | ||
11369 | static void | |
11370 | remote_teardown_btrace (struct btrace_target_info *tinfo) | |
11371 | { | |
11372 | /* We must not talk to the target during teardown. */ | |
11373 | xfree (tinfo); | |
11374 | } | |
11375 | ||
11376 | /* Read the branch trace. */ | |
11377 | ||
11378 | static VEC (btrace_block_s) * | |
11379 | remote_read_btrace (struct btrace_target_info *tinfo, | |
11380 | enum btrace_read_type type) | |
11381 | { | |
11382 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
11383 | struct remote_state *rs = get_remote_state (); | |
11384 | VEC (btrace_block_s) *btrace = NULL; | |
11385 | const char *annex; | |
11386 | char *xml; | |
11387 | ||
11388 | if (packet->support != PACKET_ENABLE) | |
11389 | error (_("Target does not support branch tracing.")); | |
11390 | ||
11391 | #if !defined(HAVE_LIBEXPAT) | |
11392 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
11393 | #endif | |
11394 | ||
11395 | switch (type) | |
11396 | { | |
11397 | case btrace_read_all: | |
11398 | annex = "all"; | |
11399 | break; | |
11400 | case btrace_read_new: | |
11401 | annex = "new"; | |
11402 | break; | |
11403 | default: | |
11404 | internal_error (__FILE__, __LINE__, | |
11405 | _("Bad branch tracing read type: %u."), | |
11406 | (unsigned int) type); | |
11407 | } | |
11408 | ||
11409 | xml = target_read_stralloc (¤t_target, | |
11410 | TARGET_OBJECT_BTRACE, annex); | |
11411 | if (xml != NULL) | |
11412 | { | |
11413 | struct cleanup *cleanup = make_cleanup (xfree, xml); | |
11414 | ||
11415 | btrace = parse_xml_btrace (xml); | |
11416 | do_cleanups (cleanup); | |
11417 | } | |
11418 | ||
11419 | return btrace; | |
11420 | } | |
11421 | ||
ced63ec0 GB |
11422 | static int |
11423 | remote_augmented_libraries_svr4_read (void) | |
11424 | { | |
11425 | struct remote_state *rs = get_remote_state (); | |
11426 | ||
11427 | return rs->augmented_libraries_svr4_read; | |
11428 | } | |
11429 | ||
c906108c | 11430 | static void |
fba45db2 | 11431 | init_remote_ops (void) |
c906108c | 11432 | { |
c5aa993b | 11433 | remote_ops.to_shortname = "remote"; |
c906108c | 11434 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11435 | remote_ops.to_doc = |
c906108c | 11436 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11437 | Specify the serial device it is connected to\n\ |
11438 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11439 | remote_ops.to_open = remote_open; |
11440 | remote_ops.to_close = remote_close; | |
c906108c | 11441 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11442 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11443 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11444 | remote_ops.to_wait = remote_wait; |
11445 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11446 | remote_ops.to_store_registers = remote_store_registers; | |
11447 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 11448 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11449 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11450 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
11451 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11452 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11453 | remote_ops.to_watchpoint_addr_within_range = |
11454 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11455 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11456 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11457 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11458 | remote_ops.to_region_ok_for_hw_watchpoint |
11459 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11460 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11461 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
11462 | remote_ops.to_kill = remote_kill; |
11463 | remote_ops.to_load = generic_load; | |
c906108c | 11464 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11465 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11466 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11467 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 11468 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 11469 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11470 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11471 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11472 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11473 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11474 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 11475 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11476 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11477 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11478 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11479 | remote_ops.to_has_memory = default_child_has_memory; | |
11480 | remote_ops.to_has_stack = default_child_has_stack; | |
11481 | remote_ops.to_has_registers = default_child_has_registers; | |
11482 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11483 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11484 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11485 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11486 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11487 | remote_ops.to_flash_erase = remote_flash_erase; |
11488 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11489 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11490 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11491 | remote_ops.to_can_async_p = remote_can_async_p; |
11492 | remote_ops.to_is_async_p = remote_is_async_p; | |
11493 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11494 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11495 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11496 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11497 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11498 | remote_ops.to_supports_disable_randomization |
11499 | = remote_supports_disable_randomization; | |
7313baad UW |
11500 | remote_ops.to_fileio_open = remote_hostio_open; |
11501 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11502 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11503 | remote_ops.to_fileio_close = remote_hostio_close; | |
11504 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11505 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11506 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11507 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11508 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11509 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11510 | remote_ops.to_trace_init = remote_trace_init; |
11511 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11512 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11513 | remote_ops.to_download_trace_state_variable |
11514 | = remote_download_trace_state_variable; | |
d248b706 KY |
11515 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11516 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11517 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11518 | remote_ops.to_trace_start = remote_trace_start; | |
11519 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11520 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11521 | remote_ops.to_trace_stop = remote_trace_stop; |
11522 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11523 | remote_ops.to_get_trace_state_variable_value |
11524 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11525 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11526 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11527 | remote_ops.to_upload_trace_state_variables |
11528 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11529 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11530 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11531 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11532 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 11533 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 11534 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11535 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11536 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11537 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11538 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11539 | remote_ops.to_static_tracepoint_marker_at |
11540 | = remote_static_tracepoint_marker_at; | |
11541 | remote_ops.to_static_tracepoint_markers_by_strid | |
11542 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11543 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11544 | remote_ops.to_use_agent = remote_use_agent; |
11545 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
11546 | remote_ops.to_supports_btrace = remote_supports_btrace; |
11547 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
11548 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
11549 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
11550 | remote_ops.to_read_btrace = remote_read_btrace; | |
ced63ec0 GB |
11551 | remote_ops.to_augmented_libraries_svr4_read = |
11552 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
11553 | } |
11554 | ||
11555 | /* Set up the extended remote vector by making a copy of the standard | |
11556 | remote vector and adding to it. */ | |
11557 | ||
11558 | static void | |
fba45db2 | 11559 | init_extended_remote_ops (void) |
c906108c SS |
11560 | { |
11561 | extended_remote_ops = remote_ops; | |
11562 | ||
0f71a2f6 | 11563 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11564 | extended_remote_ops.to_longname = |
c906108c | 11565 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11566 | extended_remote_ops.to_doc = |
c906108c | 11567 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11568 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11569 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11570 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11571 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11572 | extended_remote_ops.to_detach = extended_remote_detach; |
11573 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 11574 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11575 | extended_remote_ops.to_supports_disable_randomization |
11576 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11577 | } |
11578 | ||
6426a772 JM |
11579 | static int |
11580 | remote_can_async_p (void) | |
11581 | { | |
5d93a237 TT |
11582 | struct remote_state *rs = get_remote_state (); |
11583 | ||
c6ebd6cf | 11584 | if (!target_async_permitted) |
75c99385 PA |
11585 | /* We only enable async when the user specifically asks for it. */ |
11586 | return 0; | |
11587 | ||
23860348 | 11588 | /* We're async whenever the serial device is. */ |
5d93a237 | 11589 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
11590 | } |
11591 | ||
11592 | static int | |
11593 | remote_is_async_p (void) | |
11594 | { | |
5d93a237 TT |
11595 | struct remote_state *rs = get_remote_state (); |
11596 | ||
c6ebd6cf | 11597 | if (!target_async_permitted) |
75c99385 PA |
11598 | /* We only enable async when the user specifically asks for it. */ |
11599 | return 0; | |
11600 | ||
23860348 | 11601 | /* We're async whenever the serial device is. */ |
5d93a237 | 11602 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
11603 | } |
11604 | ||
2acceee2 JM |
11605 | /* Pass the SERIAL event on and up to the client. One day this code |
11606 | will be able to delay notifying the client of an event until the | |
23860348 | 11607 | point where an entire packet has been received. */ |
2acceee2 | 11608 | |
2acceee2 JM |
11609 | static serial_event_ftype remote_async_serial_handler; |
11610 | ||
6426a772 | 11611 | static void |
819cc324 | 11612 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11613 | { |
88b496c3 TT |
11614 | struct remote_state *rs = context; |
11615 | ||
2acceee2 JM |
11616 | /* Don't propogate error information up to the client. Instead let |
11617 | the client find out about the error by querying the target. */ | |
88b496c3 | 11618 | rs->async_client_callback (INF_REG_EVENT, rs->async_client_context); |
2acceee2 JM |
11619 | } |
11620 | ||
74531fed PA |
11621 | static void |
11622 | remote_async_inferior_event_handler (gdb_client_data data) | |
11623 | { | |
11624 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11625 | } | |
11626 | ||
2acceee2 | 11627 | static void |
2bc416ba | 11628 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 11629 | void *context), void *context) |
2acceee2 | 11630 | { |
5d93a237 TT |
11631 | struct remote_state *rs = get_remote_state (); |
11632 | ||
2acceee2 JM |
11633 | if (callback != NULL) |
11634 | { | |
88b496c3 TT |
11635 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
11636 | rs->async_client_callback = callback; | |
11637 | rs->async_client_context = context; | |
2acceee2 JM |
11638 | } |
11639 | else | |
5d93a237 | 11640 | serial_async (rs->remote_desc, NULL, NULL); |
6426a772 JM |
11641 | } |
11642 | ||
5a2468f5 | 11643 | static void |
c2d11a7d | 11644 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11645 | { |
427c3a89 | 11646 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
11647 | } |
11648 | ||
d471ea57 AC |
11649 | static void |
11650 | show_remote_cmd (char *args, int from_tty) | |
11651 | { | |
37a105a1 | 11652 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11653 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11654 | struct cleanup *showlist_chain; |
11655 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11656 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11657 | |
11658 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11659 | for (; list != NULL; list = list->next) | |
11660 | if (strcmp (list->name, "Z-packet") == 0) | |
11661 | continue; | |
427c3a89 DJ |
11662 | else if (list->type == not_set_cmd) |
11663 | /* Alias commands are exactly like the original, except they | |
11664 | don't have the normal type. */ | |
11665 | continue; | |
11666 | else | |
37a105a1 DJ |
11667 | { |
11668 | struct cleanup *option_chain | |
11669 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11670 | |
37a105a1 DJ |
11671 | ui_out_field_string (uiout, "name", list->name); |
11672 | ui_out_text (uiout, ": "); | |
427c3a89 | 11673 | if (list->type == show_cmd) |
5b9afe8a | 11674 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
11675 | else |
11676 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11677 | /* Close the tuple. */ |
11678 | do_cleanups (option_chain); | |
11679 | } | |
427c3a89 DJ |
11680 | |
11681 | /* Close the tuple. */ | |
11682 | do_cleanups (showlist_chain); | |
d471ea57 | 11683 | } |
5a2468f5 | 11684 | |
0f71a2f6 | 11685 | |
23860348 | 11686 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11687 | static void |
11688 | remote_new_objfile (struct objfile *objfile) | |
11689 | { | |
5d93a237 TT |
11690 | struct remote_state *rs = get_remote_state (); |
11691 | ||
11692 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 11693 | remote_check_symbols (); |
dc8acb97 MS |
11694 | } |
11695 | ||
00bf0b85 SS |
11696 | /* Pull all the tracepoints defined on the target and create local |
11697 | data structures representing them. We don't want to create real | |
11698 | tracepoints yet, we don't want to mess up the user's existing | |
11699 | collection. */ | |
11700 | ||
11701 | static int | |
11702 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11703 | { |
00bf0b85 SS |
11704 | struct remote_state *rs = get_remote_state (); |
11705 | char *p; | |
d5551862 | 11706 | |
00bf0b85 SS |
11707 | /* Ask for a first packet of tracepoint definition. */ |
11708 | putpkt ("qTfP"); | |
11709 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11710 | p = rs->buf; | |
11711 | while (*p && *p != 'l') | |
d5551862 | 11712 | { |
00bf0b85 SS |
11713 | parse_tracepoint_definition (p, utpp); |
11714 | /* Ask for another packet of tracepoint definition. */ | |
11715 | putpkt ("qTsP"); | |
11716 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11717 | p = rs->buf; | |
d5551862 | 11718 | } |
00bf0b85 | 11719 | return 0; |
d5551862 SS |
11720 | } |
11721 | ||
00bf0b85 SS |
11722 | static int |
11723 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11724 | { |
00bf0b85 | 11725 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11726 | char *p; |
d5551862 | 11727 | |
00bf0b85 SS |
11728 | /* Ask for a first packet of variable definition. */ |
11729 | putpkt ("qTfV"); | |
d5551862 SS |
11730 | getpkt (&rs->buf, &rs->buf_size, 0); |
11731 | p = rs->buf; | |
00bf0b85 | 11732 | while (*p && *p != 'l') |
d5551862 | 11733 | { |
00bf0b85 SS |
11734 | parse_tsv_definition (p, utsvp); |
11735 | /* Ask for another packet of variable definition. */ | |
11736 | putpkt ("qTsV"); | |
d5551862 SS |
11737 | getpkt (&rs->buf, &rs->buf_size, 0); |
11738 | p = rs->buf; | |
11739 | } | |
00bf0b85 | 11740 | return 0; |
d5551862 SS |
11741 | } |
11742 | ||
c1e36e3e PA |
11743 | /* The "set/show range-stepping" show hook. */ |
11744 | ||
11745 | static void | |
11746 | show_range_stepping (struct ui_file *file, int from_tty, | |
11747 | struct cmd_list_element *c, | |
11748 | const char *value) | |
11749 | { | |
11750 | fprintf_filtered (file, | |
11751 | _("Debugger's willingness to use range stepping " | |
11752 | "is %s.\n"), value); | |
11753 | } | |
11754 | ||
11755 | /* The "set/show range-stepping" set hook. */ | |
11756 | ||
11757 | static void | |
11758 | set_range_stepping (char *ignore_args, int from_tty, | |
11759 | struct cmd_list_element *c) | |
11760 | { | |
5d93a237 TT |
11761 | struct remote_state *rs = get_remote_state (); |
11762 | ||
c1e36e3e PA |
11763 | /* Whene enabling, check whether range stepping is actually |
11764 | supported by the target, and warn if not. */ | |
11765 | if (use_range_stepping) | |
11766 | { | |
5d93a237 | 11767 | if (rs->remote_desc != NULL) |
c1e36e3e | 11768 | { |
c1e36e3e PA |
11769 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
11770 | remote_vcont_probe (rs); | |
11771 | ||
11772 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_ENABLE | |
11773 | && rs->supports_vCont.r) | |
11774 | return; | |
11775 | } | |
11776 | ||
11777 | warning (_("Range stepping is not supported by the current target")); | |
11778 | } | |
11779 | } | |
11780 | ||
c906108c | 11781 | void |
fba45db2 | 11782 | _initialize_remote (void) |
c906108c | 11783 | { |
ea9c271d | 11784 | struct remote_state *rs; |
9a7071a8 | 11785 | struct cmd_list_element *cmd; |
6f937416 | 11786 | const char *cmd_name; |
ea9c271d | 11787 | |
0f71a2f6 | 11788 | /* architecture specific data */ |
2bc416ba | 11789 | remote_gdbarch_data_handle = |
23860348 | 11790 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11791 | remote_g_packet_data_handle = |
11792 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11793 | |
ea9c271d DJ |
11794 | /* Initialize the per-target state. At the moment there is only one |
11795 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
11796 | time. */ |
11797 | remote_state = new_remote_state (); | |
ea9c271d | 11798 | |
c906108c SS |
11799 | init_remote_ops (); |
11800 | add_target (&remote_ops); | |
11801 | ||
11802 | init_extended_remote_ops (); | |
11803 | add_target (&extended_remote_ops); | |
cce74817 | 11804 | |
dc8acb97 | 11805 | /* Hook into new objfile notification. */ |
06d3b283 | 11806 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
11807 | /* We're no longer interested in notification events of an inferior |
11808 | when it exits. */ | |
11809 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 11810 | |
b803fb0f | 11811 | /* Set up signal handlers. */ |
934b9bac | 11812 | async_sigint_remote_token = |
b803fb0f | 11813 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 11814 | async_sigint_remote_twice_token = |
6d549500 | 11815 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11816 | |
c906108c SS |
11817 | #if 0 |
11818 | init_remote_threadtests (); | |
11819 | #endif | |
11820 | ||
722247f1 | 11821 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 11822 | /* set/show remote ... */ |
d471ea57 | 11823 | |
1bedd215 | 11824 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11825 | Remote protocol specific variables\n\ |
11826 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11827 | the packets being used"), |
cff3e48b | 11828 | &remote_set_cmdlist, "set remote ", |
23860348 | 11829 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11830 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11831 | Remote protocol specific variables\n\ |
11832 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11833 | the packets being used"), |
cff3e48b | 11834 | &remote_show_cmdlist, "show remote ", |
23860348 | 11835 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11836 | |
1a966eab AC |
11837 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11838 | Compare section data on target to the exec file.\n\ | |
11839 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11840 | &cmdlist); |
11841 | ||
1a966eab AC |
11842 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11843 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11844 | maintenance packet TEXT\n\ |
11845 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11846 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11847 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11848 | terminating `#' character and checksum."), |
c906108c SS |
11849 | &maintenancelist); |
11850 | ||
7915a72c AC |
11851 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11852 | Set whether to send break if interrupted."), _("\ | |
11853 | Show whether to send break if interrupted."), _("\ | |
11854 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11855 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11856 | &setlist, &showlist); |
9a7071a8 JB |
11857 | cmd_name = "remotebreak"; |
11858 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11859 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11860 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11861 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11862 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11863 | ||
11864 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11865 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11866 | _("\ | |
9a7071a8 JB |
11867 | Set interrupt sequence to remote target."), _("\ |
11868 | Show interrupt sequence to remote target."), _("\ | |
11869 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11870 | NULL, show_interrupt_sequence, | |
11871 | &remote_set_cmdlist, | |
11872 | &remote_show_cmdlist); | |
11873 | ||
11874 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11875 | &interrupt_on_connect, _("\ | |
11876 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11877 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11878 | If set, interrupt sequence is sent to remote target."), | |
11879 | NULL, NULL, | |
11880 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11881 | |
23860348 | 11882 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11883 | |
1a966eab AC |
11884 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11885 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11886 | &setlist); |
1a966eab AC |
11887 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11888 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11889 | &showlist); |
11890 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11891 | set_memory_write_packet_size, _("\ |
11892 | Set the maximum number of bytes per memory-write packet.\n\ | |
11893 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11894 | default packet size. The actual limit is further reduced\n\ | |
11895 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11896 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11897 | &remote_set_cmdlist); |
11898 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11899 | set_memory_read_packet_size, _("\ |
11900 | Set the maximum number of bytes per memory-read packet.\n\ | |
11901 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11902 | default packet size. The actual limit is further reduced\n\ | |
11903 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11904 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11905 | &remote_set_cmdlist); |
11906 | add_cmd ("memory-write-packet-size", no_class, | |
11907 | show_memory_write_packet_size, | |
1a966eab | 11908 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11909 | &remote_show_cmdlist); |
11910 | add_cmd ("memory-read-packet-size", no_class, | |
11911 | show_memory_read_packet_size, | |
1a966eab | 11912 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11913 | &remote_show_cmdlist); |
c906108c | 11914 | |
b3f42336 | 11915 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11916 | &remote_hw_watchpoint_limit, _("\ |
11917 | Set the maximum number of target hardware watchpoints."), _("\ | |
11918 | Show the maximum number of target hardware watchpoints."), _("\ | |
11919 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11920 | NULL, NULL, /* FIXME: i18n: The maximum |
11921 | number of target hardware | |
11922 | watchpoints is %s. */ | |
b3f42336 | 11923 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11924 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11925 | &remote_hw_watchpoint_length_limit, _("\ | |
11926 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11927 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11928 | Specify a negative limit for unlimited."), | |
11929 | NULL, NULL, /* FIXME: i18n: The maximum | |
11930 | length (in bytes) of a target | |
11931 | hardware watchpoint is %s. */ | |
11932 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11933 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11934 | &remote_hw_breakpoint_limit, _("\ |
11935 | Set the maximum number of target hardware breakpoints."), _("\ | |
11936 | Show the maximum number of target hardware breakpoints."), _("\ | |
11937 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11938 | NULL, NULL, /* FIXME: i18n: The maximum |
11939 | number of target hardware | |
11940 | breakpoints is %s. */ | |
b3f42336 | 11941 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11942 | |
1b493192 PA |
11943 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
11944 | &remote_address_size, _("\ | |
4d28ad1e AC |
11945 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
11946 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
11947 | NULL, |
11948 | NULL, /* FIXME: i18n: */ | |
11949 | &setlist, &showlist); | |
c906108c | 11950 | |
444abaca | 11951 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11952 | "X", "binary-download", 1); |
0f71a2f6 | 11953 | |
444abaca | 11954 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11955 | "vCont", "verbose-resume", 0); |
506fb367 | 11956 | |
89be2091 DJ |
11957 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11958 | "QPassSignals", "pass-signals", 0); | |
11959 | ||
9b224c5e PA |
11960 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
11961 | "QProgramSignals", "program-signals", 0); | |
11962 | ||
444abaca | 11963 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11964 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11965 | |
444abaca | 11966 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11967 | "P", "set-register", 1); |
d471ea57 | 11968 | |
444abaca | 11969 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11970 | "p", "fetch-register", 1); |
b96ec7ac | 11971 | |
444abaca | 11972 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11973 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11974 | |
444abaca | 11975 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11976 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11977 | |
444abaca | 11978 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11979 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11980 | |
444abaca | 11981 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11982 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11983 | |
444abaca | 11984 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11985 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11986 | |
0876f84a DJ |
11987 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11988 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11989 | |
23181151 DJ |
11990 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11991 | "qXfer:features:read", "target-features", 0); | |
11992 | ||
cfa9d6d9 DJ |
11993 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11994 | "qXfer:libraries:read", "library-info", 0); | |
11995 | ||
2268b414 JK |
11996 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11997 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11998 | ||
fd79ecee DJ |
11999 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
12000 | "qXfer:memory-map:read", "memory-map", 0); | |
12001 | ||
0e7f50da UW |
12002 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
12003 | "qXfer:spu:read", "read-spu-object", 0); | |
12004 | ||
12005 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
12006 | "qXfer:spu:write", "write-spu-object", 0); | |
12007 | ||
07e059b5 VP |
12008 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
12009 | "qXfer:osdata:read", "osdata", 0); | |
12010 | ||
dc146f7c VP |
12011 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
12012 | "qXfer:threads:read", "threads", 0); | |
12013 | ||
4aa995e1 PA |
12014 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
12015 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
12016 | ||
12017 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
12018 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
12019 | ||
b3b9301e PA |
12020 | add_packet_config_cmd |
12021 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 12022 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 12023 | |
169081d0 TG |
12024 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
12025 | "qXfer:uib:read", "unwind-info-block", 0); | |
12026 | ||
444abaca | 12027 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 12028 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
12029 | 0); |
12030 | ||
711e434b PM |
12031 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
12032 | "qGetTIBAddr", "get-thread-information-block-address", | |
12033 | 0); | |
12034 | ||
40ab02ce MS |
12035 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
12036 | "bc", "reverse-continue", 0); | |
12037 | ||
12038 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
12039 | "bs", "reverse-step", 0); | |
12040 | ||
be2a5f71 DJ |
12041 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
12042 | "qSupported", "supported-packets", 0); | |
12043 | ||
08388c79 DE |
12044 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
12045 | "qSearch:memory", "search-memory", 0); | |
12046 | ||
bd3eecc3 PA |
12047 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12048 | "qTStatus", "trace-status", 0); | |
12049 | ||
a6b151f1 DJ |
12050 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12051 | "vFile:open", "hostio-open", 0); | |
12052 | ||
12053 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12054 | "vFile:pread", "hostio-pread", 0); | |
12055 | ||
12056 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12057 | "vFile:pwrite", "hostio-pwrite", 0); | |
12058 | ||
12059 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12060 | "vFile:close", "hostio-close", 0); | |
12061 | ||
12062 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12063 | "vFile:unlink", "hostio-unlink", 0); | |
12064 | ||
b9e7b9c3 UW |
12065 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12066 | "vFile:readlink", "hostio-readlink", 0); | |
12067 | ||
2d717e4f DJ |
12068 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12069 | "vAttach", "attach", 0); | |
12070 | ||
12071 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12072 | "vRun", "run", 0); | |
12073 | ||
a6f3e723 SL |
12074 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12075 | "QStartNoAckMode", "noack", 0); | |
12076 | ||
82f73884 PA |
12077 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12078 | "vKill", "kill", 0); | |
12079 | ||
0b16c5cf PA |
12080 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12081 | "qAttached", "query-attached", 0); | |
12082 | ||
782b2b07 | 12083 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12084 | "ConditionalTracepoints", |
12085 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12086 | |
12087 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12088 | "ConditionalBreakpoints", | |
12089 | "conditional-breakpoints", 0); | |
12090 | ||
d3ce09f5 SS |
12091 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12092 | "BreakpointCommands", | |
12093 | "breakpoint-commands", 0); | |
12094 | ||
7a697b8d SS |
12095 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12096 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12097 | |
409873ef SS |
12098 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12099 | "TracepointSource", "TracepointSource", 0); | |
12100 | ||
d914c394 SS |
12101 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12102 | "QAllow", "allow", 0); | |
12103 | ||
0fb4aa4b PA |
12104 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12105 | "StaticTracepoints", "static-tracepoints", 0); | |
12106 | ||
1e4d1764 YQ |
12107 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12108 | "InstallInTrace", "install-in-trace", 0); | |
12109 | ||
0fb4aa4b PA |
12110 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12111 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12112 | ||
78d85199 YQ |
12113 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12114 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12115 | ||
03583c20 UW |
12116 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12117 | "QDisableRandomization", "disable-randomization", 0); | |
12118 | ||
d1feda86 YQ |
12119 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12120 | "QAgent", "agent", 0); | |
12121 | ||
f6f899bf HAQ |
12122 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12123 | "QTBuffer:size", "trace-buffer-size", 0); | |
12124 | ||
9accd112 MM |
12125 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12126 | "Qbtrace:off", "disable-btrace", 0); | |
12127 | ||
12128 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
12129 | "Qbtrace:bts", "enable-btrace", 0); | |
12130 | ||
12131 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
12132 | "qXfer:btrace", "read-btrace", 0); | |
12133 | ||
37a105a1 DJ |
12134 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
12135 | Z sub-packet has its own set and show commands, but users may | |
12136 | have sets to this variable in their .gdbinit files (or in their | |
12137 | documentation). */ | |
e9e68a56 | 12138 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
12139 | &remote_Z_packet_detect, _("\ |
12140 | Set use of remote protocol `Z' packets"), _("\ | |
12141 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 12142 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 12143 | packets."), |
e9e68a56 | 12144 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
12145 | show_remote_protocol_Z_packet_cmd, |
12146 | /* FIXME: i18n: Use of remote protocol | |
12147 | `Z' packets is %s. */ | |
e9e68a56 | 12148 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 12149 | |
a6b151f1 DJ |
12150 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
12151 | Manipulate files on the remote system\n\ | |
12152 | Transfer files to and from the remote target system."), | |
12153 | &remote_cmdlist, "remote ", | |
12154 | 0 /* allow-unknown */, &cmdlist); | |
12155 | ||
12156 | add_cmd ("put", class_files, remote_put_command, | |
12157 | _("Copy a local file to the remote system."), | |
12158 | &remote_cmdlist); | |
12159 | ||
12160 | add_cmd ("get", class_files, remote_get_command, | |
12161 | _("Copy a remote file to the local system."), | |
12162 | &remote_cmdlist); | |
12163 | ||
12164 | add_cmd ("delete", class_files, remote_delete_command, | |
12165 | _("Delete a remote file."), | |
12166 | &remote_cmdlist); | |
12167 | ||
2d717e4f DJ |
12168 | remote_exec_file = xstrdup (""); |
12169 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
12170 | &remote_exec_file, _("\ | |
12171 | Set the remote pathname for \"run\""), _("\ | |
12172 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
12173 | &remote_set_cmdlist, &remote_show_cmdlist); | |
12174 | ||
c1e36e3e PA |
12175 | add_setshow_boolean_cmd ("range-stepping", class_run, |
12176 | &use_range_stepping, _("\ | |
12177 | Enable or disable range stepping."), _("\ | |
12178 | Show whether target-assisted range stepping is enabled."), _("\ | |
12179 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
12180 | tells the target to step the corresponding range of addresses itself instead\n\ | |
12181 | of issuing multiple single-steps. This speeds up source level\n\ | |
12182 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
12183 | stepping is supported by the target. The default is on."), | |
12184 | set_range_stepping, | |
12185 | show_range_stepping, | |
12186 | &setlist, | |
12187 | &showlist); | |
12188 | ||
449092f6 CV |
12189 | /* Eventually initialize fileio. See fileio.c */ |
12190 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
12191 | |
12192 | /* Take advantage of the fact that the LWP field is not used, to tag | |
12193 | special ptids with it set to != 0. */ | |
82f73884 PA |
12194 | magic_null_ptid = ptid_build (42000, 1, -1); |
12195 | not_sent_ptid = ptid_build (42000, 1, -2); | |
12196 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
12197 | |
12198 | target_buf_size = 2048; | |
12199 | target_buf = xmalloc (target_buf_size); | |
c906108c | 12200 | } |
10760264 | 12201 |